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WO2017163779A1 - Dispositif amortisseur et dispositif de prévention de chute - Google Patents

Dispositif amortisseur et dispositif de prévention de chute Download PDF

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Publication number
WO2017163779A1
WO2017163779A1 PCT/JP2017/007682 JP2017007682W WO2017163779A1 WO 2017163779 A1 WO2017163779 A1 WO 2017163779A1 JP 2017007682 W JP2017007682 W JP 2017007682W WO 2017163779 A1 WO2017163779 A1 WO 2017163779A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
piston
rod
damper device
outer peripheral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/007682
Other languages
English (en)
Japanese (ja)
Inventor
伸一 関根
太田　晶久
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KYB Corp
Original Assignee
KYB Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KYB Corp filed Critical KYB Corp
Publication of WO2017163779A1 publication Critical patent/WO2017163779A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details

Definitions

  • the present invention relates to a damper device and a fall prevention device.
  • Patent Document 1 discloses a fall prevention device using a conventional damper device.
  • This overturn prevention device includes a damper and a pair of bases.
  • the damper is attached between the upper surface of the furniture installed on the floor and the ceiling.
  • the pair of base portions pivotally support each of both end portions of the damper so as to be rotatable around a rotation axis.
  • One base part contacts the upper surface of the furniture, and the other base part contacts the ceiling.
  • the fall prevention device rotates the damper around the rotation axis with respect to each base portion.
  • abutted to the upper surface and ceiling of furniture can be maintained. Therefore, this fall prevention apparatus can make the damping force of a damper act on furniture, can suppress the inclination of furniture, and can prevent the fall of furniture.
  • the shape of the contact surface (the surface in contact with the ceiling) of the ceiling-side base portion is an elongated rectangular shape.
  • the fall-preventing device in which the contact surface of the ceiling-side base portion is configured to be elongated can change the mounting stability depending on the orientation of the ceiling-side base portion (that is, the orientation of the longitudinal contact surface). It is necessary to install the ceiling side base part in a direction where the height becomes higher.
  • the central axis of the rod (rod) and the piston (piston) coincides with the central axis of the cylinder (cylinder), and the rod is about the central axis with respect to the cylinder. It is the structure which can rotate relatively. That is, this damper device is configured such that the rod freely rotates around the center axis of the cylinder, and the orientation of the base portion (ceiling side base portion) connected to the rod is freely changed.
  • this damper device it is necessary for the operator to install the rod while adjusting the rotation angle of the rod with respect to the cylinder (for example, the direction of the ceiling-side base) to the correct rotation angle at the time of installation. There is a risk of causing it.
  • the present invention is made in view of the above-described conventional situation, and it is an object to be solved to provide a damper device and a tipping prevention device that can restrict the rod portion from rotating with respect to the cylinder portion.
  • the damper device has a cylindrical shape, extends in a predetermined direction, has a connecting portion connected to the first base portion on one side in the predetermined direction, and penetrates the other side in the predetermined direction.
  • the cylinder part provided with the rod guide part which has is provided.
  • a piston part that moves in a predetermined direction is arranged inside the cylinder part.
  • the rod portion is inserted through the through hole portion and straddles the inside and the outside of the cylinder portion, one end portion is connected to the piston portion, and the other end portion is connected to the second base portion.
  • the restricting portion restricts the rod portion from rotating relative to the cylinder portion.
  • a piston portion that moves in a predetermined direction is arranged inside the cylinder portion, the rod portion is inserted through the through-hole portion, straddles the inside and outside of the cylinder portion, and one end portion is It is connected to the piston part.
  • a control part controls that a rod part rotates relatively to a cylinder part. Since this damper device can restrict the rod part held by the cylinder part from rotating by the restricting part, it is connected to the direction of the first base part connected to the cylinder part and the rod part.
  • the orientation of the second base portion can be maintained in a fixed relationship. Therefore, when attaching the first base portion and the second base portion, the orientation of the second base portion does not vary greatly with respect to the orientation of the first base portion, and the work burden when adjusting the orientation can be reduced. it can.
  • the restricting portion may be configured to restrict relative rotation of the piston portion with respect to the cylinder portion between the piston portion and the cylinder portion.
  • rotation can be more reliably regulated between the cylinder portion and the piston portion that are closely fitted together.
  • the restricting portion may have an inner peripheral portion of the cylinder portion and an outer peripheral portion of the piston portion.
  • a convex portion that protrudes inward of the cylinder portion and extends in a predetermined direction may be formed on the inner peripheral portion of the cylinder portion.
  • a groove on the piston portion side that extends in a predetermined direction and fits with the convex portion may be formed on the outer peripheral portion of the piston portion.
  • the piston portion relative to the cylinder portion is fitted by fitting between the convex portion formed on the inner peripheral portion of the cylinder portion and the groove portion on the piston portion side formed on the outer peripheral portion of the piston portion.
  • the rotation can be regulated more reliably.
  • the restricting portion can be realized with a configuration that is easy to form by forming a groove portion on the outer peripheral portion of the piston portion and forming a convex portion on the inner peripheral portion of the cylinder portion.
  • the restricting portion includes an inner peripheral portion of the cylinder portion, an outer peripheral portion of the piston portion, a protruding member protruding from the outer peripheral surface of the piston portion, and a side where the protruding member protrudes from the outer peripheral surface of the piston portion. And an urging portion that urges the sway.
  • a cylinder part side groove extending in a predetermined direction is formed in the inner peripheral part of the cylinder part, a hole part is formed in the outer peripheral part of the piston part, and a protruding member protruding from the hole part fits into the groove part on the cylinder part side It may be.
  • the relative rotation of the piston portion with respect to the cylinder portion is caused by the fitting between the groove portion on the cylinder portion side formed in the inner peripheral portion of the cylinder portion and the protruding member disposed on the outer peripheral portion of the piston portion.
  • the restricting portion may have an outer peripheral portion of the piston portion and an inner peripheral portion of the cylinder portion.
  • the outer peripheral part of the piston part may have an outer surface part whose outer edge of the cut surface in a direction orthogonal to the predetermined direction is non-circular.
  • the inner peripheral portion of the cylinder portion may have a non-circular inner surface portion in which the inner edge of the cut surface in a direction orthogonal to the predetermined direction is non-circular and fits with the non-circular outer surface portion.
  • the relative rotation of the piston portion relative to the cylinder portion can be more reliably restricted by a simple structure in which both the outer peripheral portion of the piston portion and the inner peripheral portion of the cylinder portion are configured to have a non-circular cross section. Can do.
  • the outer peripheral portion of the piston portion may be provided with a first outer surface portion whose outer surface is configured as a curved surface and a second outer surface portion whose outer surface is configured as a flat surface.
  • a first inner surface portion having an inner surface configured as a curved surface and fitted to the first outer surface portion on the inner peripheral portion of the cylinder portion, and a second inner surface configured as a flat surface facing the second outer surface portion and extending in a predetermined direction.
  • An inner surface portion may be provided.
  • the inner peripheral portion of the cylinder portion may have an elliptical inner surface portion whose outer edge of the cut surface in a direction orthogonal to the predetermined direction is elliptical.
  • the outer peripheral part of the piston part may have an elliptical outer surface part that fits with the elliptical inner surface part and whose outer edge of the cut surface in the direction orthogonal to the predetermined direction is elliptical.
  • the relative rotation of the piston portion with respect to the cylinder portion can be more reliably restricted by a simple structure in which both the outer peripheral portion of the piston portion and the inner peripheral portion of the cylinder portion are configured to have an elliptical cross section. it can.
  • a groove portion on the cylinder portion side that is recessed on the outer side of the cylinder portion and extends in a predetermined direction may be formed on the inner peripheral portion of the cylinder portion.
  • a convex portion on the piston portion side that fits into the groove portion on the cylinder portion side may be formed on the outer peripheral portion of the piston portion.
  • the groove portion (groove portion on the cylinder portion side) formed on the inner peripheral portion of the cylinder portion and the convex portion (convex portion on the piston portion side) formed on the outer peripheral portion of the piston portion are fitted.
  • the relative rotation of the piston portion with respect to the cylinder portion can be more reliably restricted by the engagement.
  • the restricting portion may be configured to restrict relative rotation of the rod portion with respect to the rod guide portion between the rod portion and the rod guide portion.
  • the relative rotation of the rod portion with respect to the cylinder portion can be directly restricted between them, and the influence on other parts due to the restriction can be suppressed.
  • the restricting portion may have an outer peripheral portion of the rod portion and a through hole portion of the rod guide portion.
  • the outer peripheral part of the rod part may have a non-circular outer surface part at the outer edge of the cut surface in a direction orthogonal to the predetermined direction.
  • the inner peripheral portion of the through-hole portion may have a non-circular inner surface portion in which the inner edge of the cut surface in the direction orthogonal to the predetermined direction is non-circular and fits with the non-circular outer surface portion.
  • the relative rotation of the rod portion relative to the cylinder portion is further improved by a simple structure in which the outer peripheral portion of the rod portion and the inner peripheral portion of the through hole portion of the rod guide portion are both configured to have a non-circular cross section. It can be regulated reliably.
  • the rod portion and the rod guide portion are the processing target portions for preventing rotation, the processing is easy to perform, and the processing portion for preventing rotation can be further reduced.
  • the outer peripheral portion of the rod portion may be provided with an outer peripheral curved surface portion whose outer surface is configured as a curved surface and an outer peripheral flat surface portion whose outer surface is configured as a flat surface.
  • the inner peripheral portion of the rod guide portion has an inner surface configured as a curved surface and is fitted with the outer peripheral curved surface portion, and the inner surface is configured as a flat surface facing the outer peripheral flat surface portion.
  • An inner peripheral flat surface portion extending in a predetermined direction may be provided.
  • the curved surface and the flat surface are configured on the outer peripheral portion of the rod portion, and the curved surface and the flat surface are configured on the inner peripheral portion of the rod guide portion, so that the rod portion with respect to the rod guide portion is configured. Relative rotation can be more reliably regulated.
  • the restricting portion may have a rod portion and a through hole portion of the rod guide portion.
  • the center of the through hole portion may be displaced from the center of the piston portion, and the center of the rod portion may be displaced from the center of the piston portion.
  • the relative rotation of the rod part with respect to the cylinder part can be more reliably restricted by a simple structure in which the center of the rod part and the center of the through hole part are shifted from the center of the piston part and are eccentric. .
  • the restricting portion includes a plurality of through-hole portions formed in the rod guide portion, and a plurality of rod portions that are respectively inserted into the plurality of through-hole portions and connected to the piston portions. It may be.
  • the relative rotation of the rod portion with respect to the cylinder portion can be more reliably restricted by a simple structure in which a plurality of rod portions and a plurality of through-hole portions are provided. Further, since the rotation is prevented in a manner that is regulated at a plurality of locations, the rotation is more advantageous in the case of rotation when a force in the circumferential direction is strongly applied.
  • the restricting portion is a first target portion that is a part of at least one of the cylinder portion or the first base portion, and a first portion that is a part of at least one of the rod portion or the second base portion. It may be respectively connected with 2 object parts.
  • the regulating unit may include a regulating mechanism that regulates relative rotation of the second target unit with respect to the first target unit.
  • the relative rotation of the rod portion with respect to the cylinder portion can be more reliably regulated by the mechanism disposed outside the cylinder portion and the rod portion.
  • You may comprise a fall prevention apparatus in the form containing a 2nd base part.
  • the fall prevention device is attached between the article and the ceiling in a state in which the orientation of the first base portion coupled to the cylinder portion and the orientation of the second base portion coupled to the rod portion are maintained in a fixed relationship. It is the structure which can do. Therefore, the work burden associated with the orientation adjustment can be reduced, and in particular, the fine orientation adjustment work can be reduced or omitted at a high position near the ceiling, which is more advantageous in terms of workability.
  • FIG. 1 It is a side view which shows the state which attached the fall prevention apparatus of Embodiment 1 between the upper surface of furniture, and the ceiling. It is a front view which shows the state which attached the fall prevention apparatus of Embodiment 1 between the upper surface of furniture, and the ceiling. It is a fragmentary sectional view which shows the damper apparatus and 1st base part which are used for the fall prevention apparatus of Embodiment 1.
  • FIG. It is a perspective view which shows the damper apparatus, 1st base part, and fall prevention part which are used for the fall prevention apparatus of Embodiment 1.
  • FIG. It is a fragmentary sectional view which shows the damper apparatus, 1st base part, and fall prevention part which are used for the fall prevention apparatus of Embodiment 1.
  • FIG. 1 It is a fragmentary sectional view which shows the damper apparatus, 1st base part, and fall prevention part which are used for the fall prevention apparatus of Embodiment 1.
  • FIG. 8 is a schematic cross-sectional view schematically showing the AA cross section of FIG. 7.
  • FIG. 9A is a schematic cross-sectional view schematically showing a BB cross section of FIG. 8
  • FIG. 9B is a schematic cross-sectional view schematically showing a CC cross section of FIG. 6 is a schematic cross-sectional view of a damper device used in the overturn prevention device of Embodiment 2.
  • FIG. 8 is a schematic cross-sectional view schematically showing the AA cross section of FIG. 7.
  • FIG. 9A is a schematic cross-sectional view schematically showing a BB cross section of FIG. 8
  • FIG. 9B is a schematic cross-sectional view schematically showing a CC cross section of FIG. 6 is a schematic cross-sectional view of a damper device used in the overturn prevention device of Embodiment 2.
  • FIG. 1 It is a cross-sectional schematic diagram of a damper device used in the overturn prevention device of the third embodiment.
  • (A) is a cross-sectional schematic diagram in the vicinity of the rod guide portion of the damper device used in the overturn prevention device of Embodiment 4, and (B) is a schematic cross-sectional diagram in the vicinity of the rod-side pressure chamber.
  • (A) is a cross-sectional schematic diagram in the vicinity of the rod guide portion of the damper device used in the overturn prevention device of Embodiment 5
  • (B) is a schematic cross-sectional diagram in the vicinity of the rod-side pressure chamber. It is a cross-sectional schematic diagram which shows roughly the longitudinal cross-section of a part of damper apparatus used for the fall prevention apparatus of Embodiment 6.
  • FIG. 10 is a schematic cross-sectional view schematically showing a longitudinal section of a part of a damper device used in the overturn prevention device of Embodiment 7.
  • (A) is a schematic cross-sectional view schematically showing the FF cross section of FIG. 16, and
  • (B) is a schematic cross-sectional view schematically showing the GG cross section of FIG.
  • FIG. 10 is a schematic cross-sectional view schematically showing a longitudinal section of a part of a damper device used in the overturn prevention device of embodiment 8.
  • (A) is a schematic cross-sectional view schematically showing the HH cross section of FIG. 18, and (B) is a schematic cross-sectional view schematically showing the II cross section of FIG. It is a side view which shows the state which attached the fall prevention apparatus of Embodiment 9 between the upper surface of furniture, and the ceiling. It is a side view which shows the state which attached the fall prevention apparatus of Embodiment 10 between the upper surface of furniture, and the ceiling.
  • Embodiment 1 which is an example which actualized the damper apparatus and the fall prevention apparatus of this invention is demonstrated, referring drawings.
  • At least one or more fall prevention devices 1 shown in FIG. 1 are attached between the upper surface of the furniture F and the ceiling C.
  • the furniture F is installed on the floor surface with the back surface facing a wall surface W extending vertically from a floor surface (not shown) serving as an installation surface.
  • the furniture F has, for example, a rectangular parallelepiped shape, and has a door, a drawer, etc., not shown on the front surface (the right side surface in FIG. 1), and can store clothes, accessories, and the like inside.
  • the furniture F has a rectangular shape in which the horizontal cross-sectional shape is long in the left-right direction (the depth direction in FIG. 1). If the fall prevention device 1 as shown in FIG. 1 is not attached, the furniture F may be tilted forward (rightward in FIG. 1) due to an earthquake or the like.
  • the fall prevention device 1 includes a damper device 10, a pair of base portions 30 ⁇ / b> A and 30 ⁇ / b> B, a fall prevention portion 50, and an angle restriction portion 70.
  • the damper device 10 is configured, for example, as a pressure damper in which the damping force generated during the extension operation is smaller than the damping force generated during the contraction operation.
  • the damper device 10 includes a cylinder portion 11 configured in a cylindrical shape and extending in a predetermined direction, and a rod portion 13 disposed in a configuration straddling the inside and the outside of the cylinder portion 11, and the rod portion 13 is a cylinder portion. 11 is configured to be able to move relative to 11.
  • a joint portion 15 is provided at an end portion of the cylinder portion 11, and a joint portion 15 is also provided at an end portion of the rod portion 13. As shown in FIGS. 1 to 3, each joint portion 15 is formed by bending a flat metal fitting.
  • Each joint portion 15 is formed with a through hole 15 ⁇ / b> A penetrating in a direction orthogonal to the axis of the damper device 10. Details of the damper device 10 will be described later.
  • the first base portion 30 ⁇ / b> A is connected to the joint portion 15 provided on one end side (lower end side) of the cylinder portion 11.
  • the second base portion 30 ⁇ / b> B is connected to the joint portion 15 provided on the distal end side (upper end side) of the rod portion 13.
  • the first base portion 30A is an article-side base portion placed in contact with the upper surface of the furniture F
  • the second base portion 30B is a ceiling-side base portion disposed in contact with the ceiling C.
  • the first base portion 30A and the second base portion 30B have the same form and structure, and as shown in FIGS. 1 to 4, each base portion includes a base portion main body 31 and a bolt (bolt that is a rotating shaft member). ) 45, a nut 47, a bush 35, a non-slip portion 37, and the like.
  • first base portion 30A is representatively described in detail, and the second base portion 30B is assumed to have the same form and structure as the first base portion 30A, and the description is simplified.
  • the base portion main body 31 has a rectangular outer shape.
  • long side direction the direction in which the long side extends in the outline of the base body 31 in plan view
  • short side direction the direction in which the short side extends
  • the lower end edge of the base body 31 is linear with the upper surface of the furniture F
  • the upper end edge has an arcuate outer shape that swells upward from both sides of the lower end edge (see FIG. 1).
  • the base body 31 has a substantially trapezoidal outer shape in which the upper end edge is shorter than the lower end edge in a side view of the first base part 30A viewed in the long side direction in a state of being placed in contact with the upper surface of the furniture F. (See FIGS. 2 and 3).
  • the upper surface of the furniture F and the lower surface of the ceiling C are horizontal surfaces orthogonal to the vertical direction, and the respective contact surfaces (antislip portions) of the first base portion 30 ⁇ / b> A and the second base portion 30 ⁇ / b> B.
  • the surface in contact with the furniture F or the ceiling C) is arranged in the horizontal direction.
  • the base portion main body 31 is in the long side direction (the left-right direction in FIG. 1 and the depth direction in FIGS. 2 and 3) on the upper surface.
  • An elongated groove 41 is formed.
  • the bottom surface 41A is disposed in the horizontal direction, and the inner wall surface 41B rises in a substantially vertical direction on both sides of the bottom surface 41A.
  • the bottom surface 41 ⁇ / b> A of the groove portion 41 is located at the approximate center of the base portion main body 31 in the vertical direction.
  • the bottom surface 41 ⁇ / b> A of the groove portion 41 is formed to have a constant width except for a portion where a pair of convex portions 43, 43 described later is formed.
  • the groove portion 41 is formed with a pair of convex portions 43 and 43 protruding from the bottom surface 41A of the groove portion 41 and the inner wall surfaces 41B and 41B at the center in the long side direction.
  • a space in which the joint portion 15 of the damper device 10 and a bush 35 described later are fitted is formed between the convex portions 43 and 43. This space communicates with the groove 41.
  • the distance between the inner wall surfaces 43A, 43A of the pair of convex portions 43, 43 (the length in the short side direction of the space) is slightly larger than the length of the bush 35 described later.
  • an insertion hole 43B into which a shaft portion 45B of a bolt 45 described later is inserted is formed so as to penetrate in the short side direction.
  • the groove portion 41 has a pair of locked holes 49 formed in the bottom surface 41A. In the direction of the groove portion 41, the distance from the convex portion 43 to each locked hole 49 is substantially equal.
  • Each locked hole 49 has a slit shape extending over the entire width of the groove portion 41. Specifically, each locked hole 49 has a length equal to the width dimension of the groove portion 41, and the width is the thickness of the locking portion 51 ⁇ / b> A of the fall prevention portion 50, which will be described later, and the difference provided in the angle regulating portion 70. It is slightly larger than the thickness of the recessed portion 71B.
  • One locked hole 49 is a locked portion into which a locking portion 51 ⁇ / b> A of a fall prevention portion 50 described later is inserted and locked.
  • the other locked hole 49 is a locked portion into which an insertion portion 71B provided in an angle regulating portion 70 described later is inserted and locked.
  • the base portion main body 31 is a central portion in the long side direction, and a pair of recess portions 42 are formed on both sides of the groove portion 41. ing.
  • Each recess 42 is open outward in the upward direction and the short side direction.
  • an opening that forms the end of an insertion hole 43 ⁇ / b> B that penetrates the protrusion 43 is provided.
  • a head 45A of a bolt 45 described later and a nut 47 screwed into the bolt 45 are arranged inside each recess 42.
  • Each recess 42 is formed so as to spread upward in the long side direction so that the tool can be fitted from above to the head 45A or the nut 47 of the bolt 45 disposed inside.
  • the base body 31 has a hollow structure. As shown in FIGS. 2 and 3, in the first base portion 30 ⁇ / b> A in a state of being placed in contact with the upper surface of the furniture F, the base portion main body 31 opens downward.
  • the base portion main body 31 includes a plurality of ribs R1 (FIG. 1) extending parallel to the short side direction and two ribs R2 (FIG. 3) extending parallel to the long side direction. Is formed.
  • the rotation shaft member is composed of a bolt 45 inserted from one of the insertion holes 43 ⁇ / b> B of the base portion main body 31 and a nut 47 screwed into the shaft portion 45 ⁇ / b> B of the bolt 45. It is configured.
  • the central axis of each bolt 45 assembled to the first base portion 30A and the second base portion 30B becomes the rotational axis of the damper device 10. That is, the damper device 10 rotates relative to the first base portion 30A around the central axis of the bolt 45 assembled to the first base portion 30A. Similarly, the damper device 10 rotates relative to the second base portion 30B around the central axis of the bolt 45 assembled to the second base portion 30B.
  • the bush 35 is substantially cylindrical.
  • the bush 35 is an elastic body, and the length of the bush 35 is slightly smaller than the distance between the inner wall surfaces 43 ⁇ / b> A and 43 ⁇ / b> A of the pair of convex portions 43 and 43 provided on the base portion main body 31.
  • a concave portion 35A is formed that makes a round around the outer peripheral surface of the central portion.
  • the outer diameter of the recess 35 ⁇ / b> A is substantially equal to the inner diameter of the through hole 15 ⁇ / b> A formed in the joint portion 15 of the damper device 10.
  • the outer diameter of the portion rising from both ends of the recess 35 ⁇ / b> A is larger than the inner diameter of the through hole 15 ⁇ / b> A formed in the joint portion 15 of the damper device 10.
  • the outer peripheral surfaces 35B at both ends of the bush 35 are reduced in diameter outward.
  • the inner diameter of the bush 35 is slightly larger than the outer diameter of the shaft 45B of the bolt 45. Further, the bush 35 has inner peripheral surfaces 35C at both ends that are expanded in the outward direction. For this reason, the bush 35 is rotatable around the shaft portion 45 ⁇ / b> B of the bolt 45.
  • the bush 35 can be tilted with respect to the shaft portion 45B of the bolt 45 as long as the inner peripheral surfaces 35C of both end portions with expanded diameters are in contact with the outer peripheral surface of the shaft portion 45B of the bolt 45. That is, the damper device 10 in which the bush 35 is attached to the joint portion 15 is rotatable around the shaft portion 45B of the bolt 45, and is swingable in a direction crossing the rotation direction.
  • the rocking occurs due to the dimensional allowance and the diameter increase of the inner peripheral surface 35C. Furthermore, the elastic deformation of the bush 35 allows the damper device 10 to swing more greatly in the direction crossing the rotational direction.
  • FIG. 3 and the like a configuration in which the damper device 10 is connected to the first base portion 30A so as to be rotatable and swingable is shown. However, the damper device 10 is connected to the second base portion 30B. However, it is connected by the same structure so that rotation and rocking
  • the anti-slip portion 37 is made of, for example, rubber and has a similar shape (rectangular shape) whose outer shape is slightly larger than the outer shape of the base body 31. It has become a shape.
  • the non-slip portion 37 has a flat surface that comes into contact with the upper surface of the furniture F or the ceiling C, and a surface facing the opposite side (a surface facing the base portion main body 31) is an outer peripheral wall and a rib of the base portion main body 31. Fitting grooves that match R1 and R2 are formed.
  • the anti-slip portion 37 is detachably attached to the base portion main body 31 by its elastic force. For example, in the example of FIG. 3, in the first base portion 30 ⁇ / b> A that is placed in contact with the upper surface of the furniture F, the anti-slip portion 37 is fitted in the lower end opening of the base portion main body 31.
  • the fall prevention unit 50 is formed by bending a plate-shaped metal or by resin, and has a connecting part 51 and a hanging part 53.
  • the fall prevention part 50 is slightly narrower than the width of the groove part 41 formed in the base part body 31, and is constant.
  • the connecting portion 51 has a locking portion 51A formed by bending one end portion at a right angle.
  • the hanging portion 53 is continuous with the other end portion of the connecting portion 51, is orthogonal to the connecting portion 51, extends in the same direction as the locking portion 51 ⁇ / b> A, and the direction in which the upper side of the fall prevention device 1 is separated from the wall surface W
  • the length is set so as not to come out between the wall surface W and the back of the furniture F when it falls down.
  • the fall prevention part 50 is attached to the first base part 30A placed in contact with the upper surface of the furniture F, and the locking part 51A of the connecting part 51 is located on the wall surface W side of the base part main body 31. It is inserted into the stop hole 49 and locked.
  • the connecting portion 51 is attached to the base portion main body 31 and extends along the groove portion 41 formed in the base portion main body 31, and the other end is an outer edge of the article side base portion 30A (the article side base portion 30A). It is located outside the outer edge) of the non-slip portion 37.
  • the hanging part 53 hangs from the other end of the connecting part 51 and extends slightly outward from the outer edge of the anti-slip part 37 downward.
  • the fall prevention unit 50 is disposed between the wall surface W and the back surface of the furniture F below the first base unit 30A.
  • the angle restricting portion 70 is detachably attached to the first base portion 30A.
  • the angle restricting portion 70 is attached to the first base portion 30 ⁇ / b> A, and is provided continuously with a restricting portion 71 extending in a substantially vertical direction and a lower portion of the restricting portion 71, and prevents the restricting portion 71 from tilting.
  • the restricting portion 71 is a flat plate and has a substantially rectangular shape.
  • the restricting portion 71 is a receiving portion 71 ⁇ / b> A in which one short side is positioned at the upper end when the angle restricting portion 70 is attached to the first base portion 30 ⁇ / b> A placed in contact with the upper surface of the furniture F.
  • the other end portion is an insertion portion 71 ⁇ / b> B that is inserted into the locked hole 49 that is located at the lower end and located on the side away from the wall surface W of the base portion main body 31.
  • the restricting portion 71 restricts the damper device 10 from being tilted more than its inclined posture by the cylinder portion 11 of the damper device 10 coming into contact with the receiving portion 71A.
  • the inclination angle of the damper device 10 with respect to the vertical direction is preferably 15 ° to 25 °.
  • 71 A of receiving parts are open
  • the insertion portion 71 ⁇ / b> B has inclined surfaces 71 ⁇ / b> C and 71 ⁇ / b> C in which corners on both sides of the short side are cut out in the long side direction so as to become thinner toward the tip, and short from one surface of the tip.
  • the projection 71D protrudes in the side direction.
  • the support part 73 includes a first support part 73A and a second support part 73B.
  • the first support portion 73 ⁇ / b> A is a flat plate having the same width as the restricting portion 71 and extending in a direction orthogonal to the restricting portion 71.
  • the second support portion 73B is a right-angled isosceles triangular flat plate connected to a corner portion between the first support portion 73A and the restricting portion 71.
  • the damper device 10 has an external appearance as shown in FIG. 7, and has an internal configuration as shown in FIG. Each part of the damper device 10 has a cross-sectional structure as shown in FIGS.
  • the damper device 10 includes an elongated and cylindrical cylinder portion 11 and an elongated and shaft-shaped rod portion 13, and has an elongated shape as a whole.
  • the cylinder portion 11 has a cylindrical shape having a bottom portion, and has a shape extending in a longitudinal direction in a predetermined direction (longitudinal direction of the damper device 10).
  • the cylinder part 11 includes a cylindrical body 12, a rod guide part 17, and a joint part 15 on one side.
  • the cylindrical body 12 is configured in a cylindrical shape and extends in a longitudinal direction in a predetermined direction (longitudinal direction of the damper device 10), and a bottom portion 12A is provided on one side in the longitudinal direction.
  • An opening 12B is formed on the other side in the longitudinal direction.
  • the rod guide part 17 is fixed to the cylindrical body 12 in a configuration that closes an area other than the area where the rod part 13 is arranged in the opening area of the opening part 12 ⁇ / b> B, and the end part on the other side in the longitudinal direction of the cylinder part 11. (Upper end).
  • the rod guide portion 17 has a predetermined thickness, and a through-hole portion 17A extending in the thickness direction (longitudinal direction of the cylinder portion 11) is formed in the center portion.
  • the outer peripheral surface of the rod guide portion 17 is configured as a cylindrical surface. Specifically, the center of the outer peripheral surface (cylindrical surface) and the center of the through-hole portion 17A are both center lines L1.
  • a joint portion 15 on one side is integrally connected to the bottom portion 12 ⁇ / b> A of the cylindrical body 12.
  • the joint portion 15 connected to the cylindrical body 12 corresponds to an example of a connecting portion, and functions as a portion connected to the first base portion 30 ⁇ / b> A.
  • the structure for connecting the joint portion 15 and the first base portion 30A is as described above, and the joint portion 15 is rotatably and swingably connected to the first base portion 30A. However, the relative rotation operation (rotation operation around the center line L1) of the first base portion 30A with respect to the joint portion 15 is restricted.
  • the rod portion 13 includes a shaft portion 13A and a joint portion 15 on one side (upper side), and is disposed through the rod guide portion 17 as shown in FIG.
  • the structure protrudes to the outside.
  • one end portion (base end portion) of the rod portion 13 is connected to the piston portion 16, and the other end portion (tip end portion) is connected to the second base portion 30B as shown in FIG.
  • the joint portion 15 of the rod portion 13 is connected to the second base portion 30B so as to be rotatable and swingable.
  • the relative rotation operation rotation operation around the center line L1 of the second base portion 30B with respect to the joint portion 15 of the rod portion 13 is restricted.
  • the rod portion 13 and the piston portion 16 are integrally formed, and the relative displacement of the rod portion 13 with respect to the piston portion 16 is impossible.
  • the shaft portion 13 ⁇ / b> A of the rod portion 13 is inserted through the through-hole portion 17 ⁇ / b> A and straddles the inside and the outside of the cylinder portion 11, and one end (downward side) end portion is connected to the piston portion 16. It is fixed.
  • the joint portion 15 is fixed to the other end (upper side) of the shaft portion 13 ⁇ / b> A.
  • a piston portion 16 that fits the cylindrical body 12 is arranged in the cylinder portion 11 so as to be movable in a predetermined direction (longitudinal direction of the cylinder portion 11).
  • the cylindrical body 12 of the cylinder portion 11 is partitioned into a rod side pressure chamber 21 in which the proximal end portion of the rod portion 13 is housed by a piston portion 16 and an anti-rod side pressure chamber 22.
  • the piston portion 16 is formed with an orifice 16A that is a throttle valve for communicating between the two pressure chambers.
  • the orifice 16 ⁇ / b> A functions as a damping force generator that generates a damping force by applying resistance to the flow of hydraulic oil between the rod-side pressure chamber 21 and the non-rod-side pressure chamber 22 accompanying the expansion / contraction operation of the damper device 10.
  • the piston portion 16 is formed with a communication passage 16E that communicates between both pressure chambers via a check valve 16B.
  • the check valve 16B allows the flow of hydraulic oil from the rod-side pressure chamber 21 to the anti-rod-side pressure chamber 22, and prevents the reverse flow.
  • a mechanism for generating the damping force of the damper device 10 is well known and will be described briefly.
  • the damper device 10 hydraulic oil and compressed gas are sealed in the cylinder portion 11, and the damper device 10 functions as a pressure damper whose damping force generated during the extension operation is smaller than the damping force generated during the contraction operation.
  • the extension operation of the damper device 10 means an operation in which the protruding length of the rod portion 13 from the cylinder portion 11 and the length of the damper device 10 become longer.
  • the contraction operation of the damper device 10 means an operation in which the protruding length of the rod portion 13 from the cylinder portion 11 and the length of the damper device 10 are shortened.
  • the expansion force of the compressed gas sealed in the cylinder part 11 works in the extending direction.
  • the hydraulic oil flow path from the rod-side pressure chamber 21 to the non-rod-side pressure chamber 22 becomes the path of the orifice 16A and the communication path 16E.
  • the flow path of the hydraulic oil from the non-rod side pressure chamber 22 to the rod side pressure chamber 21 is only the orifice 16 ⁇ / b> A. For this reason, in the damper device 10, the damping force generated during the extension operation is smaller than the damping force generated during the contraction operation.
  • a regulating portion 80 is configured by the inner peripheral portion of the cylinder portion 11 and the outer peripheral portion of the piston portion 16.
  • the restriction part 80 restricts the rod part 13 from rotating relative to the cylinder part 11 between the piston part 16 and the cylinder part 11.
  • the inner peripheral portion of the cylindrical body 12 has a non-circular inner edge of the cut surface in a direction orthogonal to a predetermined direction (longitudinal direction of the cylinder portion 11), and the outer peripheral portion of the piston portion 16. It is configured as a non-circular inner surface portion that fits into the (non-circular outer surface portion).
  • the inner peripheral portion of the cylindrical body 12 has a cylindrical surface portion 12C configured as a part of a cylindrical surface whose inner peripheral surface is centered on the center line L1, and an inner peripheral surface is the inner side of the cylindrical portion 11 (the cylindrical body 12). And a convex portion 12D that is convex toward the center line L1 side).
  • the convex portion 12D extends in the longitudinal direction (predetermined direction) of the cylinder portion 11, and is formed in a rib shape with a constant width over a predetermined range H (FIGS. 7 and 8) in the longitudinal direction of the cylinder portion 11.
  • the inner peripheral portion of the cylindrical body 12 has a cross-sectional structure as shown in FIG.
  • the outer peripheral part of the piston part 16 is configured as a non-circular outer surface part in which the outer edge of the cut surface in a direction orthogonal to a predetermined direction (longitudinal direction of the cylinder part 11) is non-circular.
  • the outer peripheral portion of the piston portion 16 includes a cylindrical surface portion 16C configured as a part of a cylindrical surface whose outer peripheral surface is centered on the center line L1, and an outer peripheral surface on the central side of the piston portion 16 (on the central side of the cylindrical body 12). And a groove portion 16D on the piston portion side that is concave toward the center line L1 side).
  • the groove 16D on the piston portion side extends in the thickness direction of the piston portion 16 (longitudinal direction of the cylinder portion 11), and is configured with a constant width over the entire thickness direction.
  • the piston portion 16 has an outer edge structure as shown in FIG. 9B throughout the thickness direction.
  • the piston portion 16 has a configuration in which the cylindrical surface portion 16C is fitted to the cylindrical surface portion 12C of the cylindrical body 12, and the groove portion 16D is fitted to the convex portion 12D of the cylindrical body 12, and is slidable with the cylindrical body 12. It is mated.
  • FIG. 9B the piston portion 16 is simply shown, and the orifice 16A, the communication passage 16E, and the like shown in FIG. 8 are omitted.
  • the restriction portion 80 configured in this way guides the groove portion 16D on the piston portion side to move along the convex portion 12D when the piston portion 16 moves inside the cylindrical body 12.
  • the relative position in the circumferential direction of the groove portion 16D (the circumferential position around the center line L1) is always maintained at the position of the convex portion 12D. Does not rotate relative to the cylindrical body 12. Therefore, the rod portion 13 integrated with the piston portion 16 does not rotate relative to the cylinder portion 11 including the cylindrical body 12, and is prevented from rotating.
  • the piston portion 16 that moves in a predetermined direction is disposed inside the cylinder portion 11.
  • the rod portion 13 is inserted through the through-hole portion 17A, straddles the inside and the outside of the cylinder portion 11, and is connected in a form in which one end portion is fixed to the piston portion 16 so as not to be relatively rotatable. .
  • the restricting portion 80 restricts the rod portion 13 from rotating relative to the cylinder portion 11.
  • the restriction portion 80 can restrict the rod portion 13 held by the cylinder portion 11 from rotating. Therefore, the orientation of the first base portion 30A connected to the cylinder portion 11 and the orientation of the second base portion 30B connected to the rod portion 13 can be maintained in a fixed relationship. Therefore, when attaching the first base portion 30A and the second base portion 30B, the orientation of the second base portion 30B does not vary greatly with respect to the orientation of the first base portion 30A, and the work load when adjusting the orientation is increased. Can be reduced.
  • the restriction part 80 of the damper device 10 is configured to restrict the relative rotation of the piston part 16 with respect to the cylinder part 11 between the piston part 16 and the cylinder part 11. According to this structure, rotation can be more reliably regulated between the cylinder part 11 and the piston part 16 which closely fit together.
  • the restricting portion 80 has an inner peripheral portion of the cylinder portion 11 and an outer peripheral portion of the piston portion 16, and the inner peripheral portion of the cylinder portion 11 protrudes to the inside of the cylinder portion 11 and has a predetermined direction.
  • a convex portion 12D extending in the direction is formed.
  • a groove portion 16D on the piston portion side that extends in a predetermined direction and fits with the convex portion 12D is formed. When the piston part 16 moves, the groove part 16D on the piston part side moves along the convex part 12D.
  • the convex portion 12 ⁇ / b> D formed on the inner peripheral portion of the cylinder portion 11 and the groove portion 16 ⁇ / b> D on the piston portion side formed on the outer peripheral portion of the piston portion 16 are fitted to the cylinder portion 11.
  • the relative rotation of the piston portion 16 can be more reliably regulated.
  • the restricting portion 80 can be realized with a configuration in which a groove portion is formed on the outer peripheral portion of the piston portion 16 and the convex portion 12D is formed on the inner peripheral portion of the cylinder portion 11 so as to be easily formed.
  • a device 1 is configured.
  • the fall prevention device 1 maintains the orientation of the first base portion 30A connected to the cylinder portion 11 and the orientation of the second base portion 30B connected to the rod portion 13 in a certain relationship, while maintaining the furniture F ( This is a configuration that can be attached between the article) and the ceiling C. Therefore, the work burden accompanying the orientation adjustment can be reduced. In particular, fine orientation adjustment work can be reduced or omitted at a high position near the ceiling, which is more advantageous in terms of workability.
  • the damper device of Embodiment 2 and the overturn prevention device using the same will be described mainly with reference to FIG.
  • the damper device and the overturn prevention device of the second embodiment are provided with a protruding member 284, a biasing member 286, and a housing portion 288 instead of the groove portion 16D (FIG. 9B) on the piston portion side.
  • a groove 212D on the cylinder portion side is provided instead of the convex portion 12D (FIG. 9B). Only these configurations are different from the damper device 10 and the overturn prevention device 1 of the first embodiment shown in FIG.
  • the damper device 210 shown in FIG. 10 includes a cylinder portion 211, a piston portion 216, and a rod portion 13.
  • the damper device 210 shown in FIG. 10 includes a cylinder portion 211, a piston portion 216, and a rod portion 13.
  • the cylinder part 211 has the same configuration as that of the cylinder part 11 (FIGS. 7 and 8, etc.) of the first embodiment except for the cylindrical body 212. Specifically, the cylinder part 211 has a part other than the groove part 212D on the cylinder part side.
  • the configuration is the same as that of the cylinder portion 11 of the first embodiment. That is, in the cylindrical body 212, the portion other than the groove portion 212D on the cylinder portion side (that is, the position corresponding to the convex portion 12D shown in FIGS. 7, 8, etc.) is shown in FIGS.
  • the cylindrical body 12 has the same configuration as the portion other than the convex portion 12D.
  • the cylinder part 211 is formed in a cylindrical shape and has a longitudinal shape extending in a predetermined direction (longitudinal direction of the damper device 210).
  • a joint part (FIG. 1, FIG. 1) connected to a first base part (a base part having the same structure as the first base part 30A shown in FIG. 1, FIG. 2, etc.).
  • a connecting portion having the same structure as the joint portion 15 indicated by 2 etc. is provided.
  • This joint portion is fixed to the cylindrical body 212 with the same structure as that of the first embodiment (the structure fixed to the cylindrical body 12).
  • the damper device 210 includes a joint portion connected to the cylindrical body 212 and a first base portion having the same structure as the first base portion 30A shown in FIGS. It is connected by the same connection structure as the shown fall prevention device 1.
  • the part on the other side (upper end side) in the longitudinal direction of the cylinder part 211 is configured in the same manner as in FIG.
  • a rod guide portion similar to the rod guide portion 17 in FIG. 9A is fixed to the upper end side of the cylinder portion 211 in a state of being fitted to the opening end portion of the cylindrical body 212.
  • this rod guide portion the same through-hole portion as the through-hole portion 17A shown in FIG. 9A is formed, and the shaft portion 13A of the rod portion 13 shown in FIG. 10 is inserted therethrough. .
  • the piston portion 216 has portions other than the protruding member 284, the urging member 286, and the accommodating portion 288 (that is, the position near the groove portion on the piston portion side shown in FIG. 7, FIG. 8, etc.).
  • the piston portion 216 is disposed inside the cylinder portion 211 and is configured to be slidable along the longitudinal direction (predetermined direction) of the cylinder portion 211.
  • the rod part 13 has the same configuration as the rod part 13 of the damper device 10 of the first embodiment shown in FIG. 1 and the like, and has the same function.
  • a second base portion having the same structure as the second base portion 30B of the overturn prevention device 1 shown in FIG. 1 and the like is connected to the rod portion 13 with the same structure as the overturn prevention device 1 of the first embodiment. .
  • the rod portion 13 is inserted into a through-hole portion similar to the through-hole portion 17A shown in FIG. 9 (A) and straddles the inside and the outside of the cylinder portion 211, and has one end portion with respect to the piston portion 216. The other end portion is connected to a second base portion (not shown).
  • the restriction part 280 restricts the rod part 13 from rotating relative to the cylinder part 211.
  • the restricting portion 280 includes an inner peripheral portion of the cylinder portion 211, an outer peripheral portion of the piston portion 216, a protruding member 284, a biasing member 286, and a housing portion 288.
  • a cylindrical surface portion 12 ⁇ / b> C similar to that of the first embodiment and a cylinder portion side groove 212 ⁇ / b> D extending in the longitudinal direction (predetermined direction) of the cylinder portion 211 are formed on the inner peripheral portion of the cylinder portion 211.
  • the groove portion 212D on the cylinder portion side is configured to be recessed on the opposite side to the center side (center line L1 side) of the cylinder portion 211, and is a predetermined range in the longitudinal direction of the cylinder portion 211 (shown in FIGS. 7 and 8). It extends in a straight line with a constant width over the same range as the predetermined range H).
  • the inner peripheral portion of the cylindrical body 212 has a cross-sectional structure as shown in FIG.
  • the cylindrical surface portion 16 ⁇ / b> C similar to the cylindrical surface portion 16 ⁇ / b> C (FIG. 9B) shown in the first embodiment and the accommodating portion 288 are formed on the outer peripheral portion of the piston portion 216.
  • the accommodating portion 288 is formed as a hole that is recessed from the outer peripheral surface side toward the center side. The size of the hole of the accommodating part 288 in the thickness direction of the piston part 216 is smaller than the thickness of the piston part 216, for example.
  • the accommodating portion 288 functions as a moving path of the protruding member 284.
  • the accommodating portion 288 accommodates a part of the protruding member 284 and an urging member 286 that urges the protruding member 284 toward the outside. Yes.
  • the protruding member 284 protrudes from the outer peripheral surface of the piston portion 216 and is fitted in the groove portion 212 ⁇ / b> D on the cylinder portion side.
  • the urging member 286 is configured by, for example, an elastic member such as a spring member, and continuously applies a force to the protruding member 284 toward the outer side in the direction (radial direction) perpendicular to the center line L1. That is, the urging member 286 is configured to continuously push the protruding member 284 to the side protruding from the outer peripheral surface of the piston portion 216.
  • the restricting portion 280 is configured in this way, when the piston portion 216 moves in the cylindrical body 212, the protruding member 284 fits in the groove portion 212D on the cylinder portion side and moves along the groove portion 212D on the cylinder portion side. Move. In the range in which the piston portion 216 can move, the circumferential relative position of the protruding member 284 with respect to the cylindrical body 212 (the circumferential position around the center line L1) is always maintained at the position of the groove portion 212D. For this reason, the piston part 216 does not rotate relative to the cylindrical body 212. Therefore, the rod portion 13 integrated with the piston portion 216 does not rotate relative to the cylinder portion 211 including the cylindrical body 212 and is prevented from rotating.
  • the relative rotation of the piston portion 216 with respect to the cylinder portion 211 is caused by the fitting between the groove portion 212D on the cylinder portion side and the protruding member 284 disposed on the outer peripheral portion of the piston portion 216. It is possible to regulate more reliably. Moreover, it is easy to ensure the cross-sectional area of the piston part 216, which is advantageous in providing a valve or the like.
  • the fall prevention device is configured to include the second base portion 30B in FIG.
  • This overturn prevention device also maintains the orientation of the first base portion connected to the cylinder portion 211 and the orientation of the second base portion connected to the rod portion 13 in a certain relationship, and maintains the furniture (article) and the ceiling. Can be installed between.
  • the damper device of Embodiment 3 and the overturn prevention device using the damper device will be described mainly with reference to FIG.
  • the damper device and the overturn prevention device of the third embodiment are provided with a flat portion 316D instead of the groove portion 16D (FIG. 9B) on the piston portion side.
  • a flat portion 312D is provided instead of the convex portion 12D (FIG. 9B).
  • 11 includes a cylinder part 311, a piston part 316, and a rod part 13.
  • the cylinder part 311 has the same configuration as the cylinder part 11 (FIG. 7, FIG. 8, etc.) of the first embodiment except for the cylindrical body 312.
  • the part other than the flat part 312D is the first embodiment.
  • This is the same configuration as the cylinder portion 11. That is, in the cylindrical body 312, portions other than the flat portion 312 ⁇ / b> D (that is, the position corresponding to the convex portion 12 ⁇ / b> D shown in FIGS. 7, 8, etc.) are the cylindrical shapes shown in FIGS. 7, 8, etc.
  • the structure is the same as that of the body 12 other than the convex portion 12D.
  • the cylinder portion 311 is formed in a cylindrical shape and has a longitudinal shape extending in a predetermined direction (longitudinal direction of the damper device 310).
  • One side of the cylinder portion 311 in the longitudinal direction is connected to a first base portion (a base portion having the same structure as the first base portion 30A shown in FIGS. 1 and 2, etc.) (FIG. 1, FIG. A connecting portion having the same structure as the joint portion 15 indicated by 2 etc. is provided.
  • the joint portion is fixed to the cylindrical body 312 with the same structure as that of the first embodiment (structure fixed to the cylindrical body 12).
  • the joint portion and the base portion having the same structure as the first base portion 30A shown in FIG. 1, FIG. 2, etc. are the same as the overturn prevention device 1 shown in FIG. It is connected with the connection structure.
  • the portion on the other side (upper end side) in the longitudinal direction of the cylinder portion 311 is configured in the same manner as in FIG.
  • a rod guide portion similar to the rod guide portion 17 in FIG. 9A is fixed to the upper end side of the cylinder portion 311 in a state of being fitted to the opening end portion of the cylindrical body 312.
  • this rod guide portion the same through-hole portion as the through-hole portion 17A shown in FIG. 9A is formed.
  • the piston part 316 has the same configuration as the piston part 16 shown in FIGS. 7 and 8 except for the flat part 316D.
  • the piston portion 316 is disposed inside the cylinder portion 311 and is configured to be slidable along the longitudinal direction (predetermined direction) of the cylinder portion 311.
  • the rod portion 13 has the same configuration as the rod portion 13 used in the damper device 10 of the first embodiment shown in FIG. 1 and the like, and has the same function.
  • a second base portion 30 ⁇ / b> B that is the same as the fall prevention device 1 of the first embodiment is connected to the rod portion 13 with the same structure as the fall prevention device 1 of the first embodiment.
  • the rod portion 13 is inserted through the same through-hole portion as the through-hole portion 17A shown in FIG. 9A and straddles the inside and the outside of the cylinder portion 311 and has one end connected to the piston portion 316. The other end portion is connected to a second base portion (not shown).
  • the restricting portion 380 restricts the rod portion 13 from rotating relative to the cylinder portion 311.
  • the restriction part 380 has an inner peripheral part of the cylinder part 311 and an outer peripheral part of the piston part 316.
  • the outer peripheral portion 316A of the piston portion 316 includes a cylindrical surface portion 16C similar to the cylindrical surface portion 16C (FIG. 9B) of the first embodiment, and a flat portion 316D.
  • the outer peripheral portion 316A is configured as a non-circular outer surface portion whose outer edge of a cut surface in a direction orthogonal to a predetermined direction (longitudinal direction of the damper device 310).
  • the cylindrical surface portion 16C corresponds to an example of a first outer surface portion whose outer surface is configured as a curved surface.
  • the flat portion 316D corresponds to an example of a second outer surface portion whose outer surface is configured as a flat surface.
  • An inner peripheral portion 312A of the cylindrical body 312 in the cylinder portion 311 includes a cylindrical surface portion 12C similar to the cylindrical surface portion 12C (FIG. 9B) of the first embodiment and a flat portion 312D.
  • the inner peripheral portion 312A has a non-circular inner surface that has a non-circular inner edge of the cut surface in a direction orthogonal to a predetermined direction (longitudinal direction of the damper device 310) and fits with the outer peripheral portion 316A (non-circular outer surface portion). It is configured as a part.
  • the cylindrical surface portion 12C corresponds to an example of a first inner surface portion, and has a configuration in which the inner surface is configured as a curved surface and fits with the cylindrical surface portion 16C (first outer surface portion).
  • the flat portion 312D corresponds to an example of a second inner surface portion, and has a configuration in which the inner surface is configured as a flat surface and faces the flat portion 316D (second outer surface portion).
  • the restricting portion 380 configured in this way moves the cylindrical surface portion 16C (first outer surface portion) along the cylindrical surface portion 12C (first inner surface portion), and the flat portion 312D (first surface).
  • the flat portion 316D (second outer surface portion) moves along the (2 inner surface portion).
  • the relative position of the flat portion 316D with respect to the cylindrical body 312 (a circumferential position around the center line L1) is always maintained at a position facing the flat portion 312D. For this reason, the piston portion 316 does not rotate relative to the cylindrical body 312. Therefore, the rod portion 13 integrated with the piston portion 316 does not rotate relative to the cylinder portion 311 including the cylindrical body 312 and is prevented from rotating.
  • the piston portion with respect to the cylinder portion 311 has a simple structure in which a curved surface and a flat surface are formed on the outer peripheral portion of the piston portion 316 and a curved surface and a flat surface are formed on the inner peripheral portion of the cylinder portion 311.
  • the relative rotation of 316 can be more reliably regulated.
  • the 1st base part (refer 1st base part 30A of FIG. 1) arrange
  • the fall prevention device is configured to include the second base portion 30B in FIG. This overturn prevention device also maintains the orientation of the first base portion connected to the cylinder portion 311 and the orientation of the second base portion connected to the rod portion 13 in a fixed relationship with the furniture (article) and the ceiling. Can be installed between.
  • the damper device 410 according to the fourth embodiment and the overturn preventing device using the damper device have an elliptical cross section instead of the circular cross section piston portion 16 (FIG. 9B, etc.). 416 is provided.
  • a cylinder section 411 having an elliptical section is provided instead of the cylinder section 11 having a circular section (such as FIG. 9B).
  • a rod guide portion 417 having an elliptical cross section is provided instead of the rod guide portion 17 having a circular cross section (FIG. 9A, etc.).
  • the damper device 410 shown in FIG. 12 includes a cylinder portion 411, a piston portion 416, and a rod portion 13.
  • the damper device 410 shown in FIG. 12 is a cylinder portion 411, a piston portion 416, and a rod portion 13.
  • the cylinder part 411 includes a cylindrical body 412, a rod guide part 417, and a joint part not shown.
  • the joint portion corresponds to an example of a connecting portion, and has the same structure as the joint portion 15 (the joint portion 15 fixed to the cylindrical body 12) shown in FIGS.
  • the joint portion is provided on one side of the cylinder portion 411 in the longitudinal direction, and is fixed to the cylindrical body 412 with the same structure as that of the first embodiment (structure fixed to the cylindrical body 12).
  • This joint portion is connected to the base portion having the same structure as the first base portion 30A shown in FIGS. 1 and 2, etc., with the same connecting structure (joint structure as the fall prevention device 1 shown in FIGS. And the first base portion 30 ⁇ / b> A).
  • the cylindrical body 412 of the cylinder part 411 has a cross-sectional structure as shown in FIGS. 12A and 12B in a plane direction orthogonal to the longitudinal direction of the cylinder part 411 (the direction of the center line L1).
  • This cross-sectional structure is almost the entire range in the longitudinal direction at 412 (the range excluding the bottom).
  • the cut surface in the direction orthogonal to the longitudinal direction has an elliptical shape on both the inner peripheral surface and the outer peripheral surface.
  • the cylindrical body 412 of the cylinder part 411 has a bottomed cylindrical form in which one end (upper end) in the longitudinal direction is configured as an opening and the bottom is provided at the other end (lower end) in the longitudinal direction.
  • a cut surface (cut surface in a direction orthogonal to the direction of the center line L1) near the upper end of the cylindrical body 412 is configured as shown in FIG.
  • the rod guide portion 417 is fixed to the opening end portion constituting the upper end portion of the cylindrical body 412 in a fitted state.
  • the rod guide portion 417 is formed with a through-hole portion 17A similar to the through-hole portion 17A of the first embodiment (FIG. 9A).
  • the piston part 416 has a cross-sectional structure as shown in FIG. 12B in a plane direction perpendicular to the longitudinal direction of the cylinder part 411 (the direction of the center line L1).
  • the outer peripheral portion 416A of the piston portion 416 has the same cross-sectional structure over almost the entire range of the piston portion 416 in the thickness direction.
  • the structure of the piston part 416 other than the outer peripheral part is the same as that of the first embodiment.
  • the piston portion 416 is shown in a simplified manner, and the orifice 16A, the communication passage 16E, etc. in FIG. 8 are omitted.
  • the rod portion 13 has the same configuration as the rod portion 13 of the first embodiment shown in FIG. 1 and the like, and has the same function.
  • a second base portion 30 ⁇ / b> B that is the same as the fall prevention device 1 of the first embodiment is connected to the rod portion 13 with the same structure as the fall prevention device 1 of the first embodiment.
  • the rod portion 13 is inserted through the through-hole portion 17A shown in FIG. 12A and straddles the inside and the outside of the cylinder portion 411, and one end portion is fixed so as not to be relatively rotatable with respect to the piston portion 416.
  • the other end portion is connected to a second base portion (not shown).
  • the restriction part 480 restricts the rod part 13 from rotating relative to the cylinder part 411.
  • the restricting portion 480 includes an inner peripheral portion 412A of the cylindrical body 412 and an outer peripheral portion 416A of the piston portion 416.
  • the inner peripheral portion 412A of the cylindrical body 412 has a non-circular inner edge of the cut surface in a direction orthogonal to the longitudinal direction (predetermined direction) of the cylinder portion 411 and is fitted to the outer peripheral portion 416A (non-circular outer surface portion). It is configured as a non-circular inner surface.
  • the inner peripheral portion 412A is an elliptical inner surface portion whose outer edge of the cut surface in a direction orthogonal to the longitudinal direction (predetermined direction) of the cylinder portion 411 is elliptical.
  • the outer peripheral portion 416A of the piston portion 416 is configured as a non-circular outer surface portion whose outer edge of the cut surface in a direction orthogonal to the longitudinal direction (predetermined direction) of the cylinder portion 411 is non-circular.
  • This outer peripheral portion 416A fits with the inner peripheral portion 412A (elliptical inner surface portion) of the cylindrical body 412, and the outer edge of the cut surface in the direction orthogonal to the longitudinal direction (predetermined direction) of the cylinder portion 411 is elliptical. It has an oval outer surface.
  • the restricting portion 480 configured as described above has an outer peripheral portion 416A (elliptical shape) of the piston portion 416 along the inner peripheral portion 412A (elliptical inner surface portion) of the cylindrical body 412.
  • the outer surface part moves.
  • the orientation of the inner circumferential portion 412A in the elliptical major axis direction and the orientation of the outer circumferential portion 416A in the elliptical major axis direction are maintained in the same direction. It does not rotate relative to the body 412. Therefore, the rod portion 13 integrated with the piston portion 416 does not rotate relative to the cylinder portion 411 including the cylindrical body 412 and is prevented from rotating.
  • the relative rotation of the piston portion 416 with respect to the cylinder portion 411 is further improved by a simple structure in which both the outer peripheral portion 416A of the piston portion 416 and the inner peripheral portion 412A of the cylinder portion 411 are configured to have an elliptical cross section. It can be regulated reliably.
  • the 1st base part (refer 1st base part 30A of FIG. 1) arrange
  • the fall prevention device is configured to include the second base portion 30B in FIG. This overturn prevention device also maintains the orientation of the first base portion connected to the cylinder portion 411 and the orientation of the second base portion connected to the rod portion 13 in a fixed relationship with the furniture (article) and the ceiling. Can be installed between.
  • the damper device of Embodiment 5 and the overturn prevention device using the same will be mainly described with reference to FIG.
  • the damper device and the overturn prevention device of the fifth embodiment are provided with a convex portion 516 ⁇ / b> D on the piston portion side instead of the groove portion 16 ⁇ / b> D (FIG. 9B) on the piston portion side.
  • a groove portion 512D on the cylinder portion side is provided instead of the convex portion 12D (FIG. 9B). Only these configurations are different from the damper device 10 and the overturn prevention device 1 of the first embodiment shown in FIG.
  • the cylindrical body 512 of the cylinder portion 511 has a bottomed cylinder in which one end (upper end) in the longitudinal direction is configured as an opening and the bottom is provided at the other end (lower end) in the longitudinal direction.
  • a cut surface in the vicinity of the upper end portion of the cylindrical body 512 is configured as shown in FIG.
  • the rod guide portion 517 is fixed to the opening end portion constituting the upper end portion of the cylindrical body 512 in a fitted state.
  • the rod guide portion 517 is formed with a through-hole portion 17A similar to the through-hole portion 17A (FIG. 9A) of the first embodiment.
  • the shaft portion 13A of the rod portion 13 fixed to the piston portion 516 is inserted through the through-hole portion 17A.
  • the restriction portion 580 restricts the rod portion 13 from rotating relative to the cylinder portion 511.
  • the restriction portion 580 includes an inner peripheral portion of the cylinder portion 511 (an inner peripheral portion 512A of the cylindrical body 512) and an outer peripheral portion 516A of the piston portion 516.
  • the outer peripheral portion 516A of the piston portion 516 is configured such that the outer edge of the cut surface in a direction orthogonal to a predetermined direction (longitudinal direction of the cylinder portion 511) is a non-circular outer surface portion.
  • the outer peripheral portion 516A is formed with a cylindrical surface portion 16C similar to the cylindrical surface portion 16C (FIG. 9B) of the first embodiment and a convex portion 516D on the piston portion side.
  • the convex portion 516D on the piston portion side is formed in a rib shape having a constant width over a predetermined range (for example, the entire range) in the thickness direction in the piston portion 516.
  • the inner peripheral portion 512A of the cylindrical body 512 in the cylinder portion 511 has a non-circular inner edge of a cut surface in a direction orthogonal to a predetermined direction (longitudinal direction of the cylinder portion 511), and an outer peripheral portion 516A (non-circular outer surface portion). It is comprised as a non-circular inner surface part to fit.
  • the inner peripheral portion 512A is formed with a cylindrical surface portion 12C similar to the cylindrical surface portion 12C (FIG.
  • the groove portion 512D on the cylinder portion side is recessed on the outer side of the cylinder portion 511 and extends in the longitudinal direction of the cylindrical body 512, and is formed linearly over substantially the entire range in the longitudinal direction.
  • the cylindrical surface portion 12C has a configuration in which the inner surface is configured as a curved surface and fits with the cylindrical surface portion 16C.
  • the convex part 516D on the piston part side is configured to fit with the groove part 512D on the cylinder part side.
  • the restricting portion 580 configured as described above moves the cylindrical surface portion 16C along the cylindrical surface portion 12C, and moves the piston portion side convex portion 516D along the cylinder portion side groove portion 512D. Move.
  • the relative position of the convex portion 516D with respect to the cylindrical body 512 (a circumferential position around the center line L1) is always kept at the position of the groove portion 512D on the cylinder portion side. It is. For this reason, the piston portion 516 does not rotate relative to the cylindrical body 512. Therefore, the rod portion 13 integrated with the piston portion 516 does not rotate relative to the cylinder portion 511 including the cylindrical body 512, and is prevented from rotating.
  • FIG. 15B in the damper device 610 of Embodiment 6 and the overturn prevention device using the damper device 610, the piston portion 616 does not have the groove portion 16D (FIG. 9B) on the piston portion side, The point from which the whole direction is made into cylindrical surface part 616D differs from the piston part 16 of Embodiment 1.
  • FIG. The cylindrical body 612 is different from the cylindrical body 12 of the first embodiment in that the convex portion 12D (FIG. 9B) does not exist and the entire circumferential direction is a cylindrical surface portion 612D.
  • the rod portion 613 is different from the rod portion 13 of the first embodiment in that the rod portion 613 is changed to a shaft portion 613A having a non-circular cross section instead of the shaft portion 13A (FIG. 9B) having a circular cross section.
  • the rod guide portion 617 differs from the rod guide portion 17 of the first embodiment in that the rod guide portion 617 is changed to a through-hole portion 617A having a non-circular cross section instead of the through-hole portion 17A having a circular cross section (FIG. 9A).
  • the damper device 610 according to the sixth embodiment and the fall prevention device using the damper device 610 are different from the damper device 10 and the fall prevention device 1 according to the first embodiment shown in FIG.
  • 14 and 15 includes a cylinder unit 611, a piston unit 616, and a rod unit 613.
  • the cylinder part 611 is formed in a cylindrical shape and has a longitudinal shape extending in a predetermined direction (longitudinal direction of the damper device 610).
  • the cylinder part 611 includes a cylindrical body 612, a rod guide part 617, and a joint part (not shown).
  • the cylindrical body 612 extends longitudinally in a predetermined direction (the direction of the center line L1), one end (upper end) is configured as an opening, and the bottom 612A is provided at the other end (lower end).
  • the cylindrical body 612 is a cylindrical body having a bottom portion, and the cross-sectional shape in a direction orthogonal to the longitudinal direction (the direction of the center line L1) extends over substantially the entire longitudinal direction (excluding the bottom portion 612A) as shown in FIG.
  • the shape is as shown in (B).
  • the inner peripheral portion of the cylindrical body 612 is configured as a cylindrical surface portion 612D.
  • the cylindrical surface portion 612D has a cylindrical surface with the inner peripheral surface centered on the center line L1 in the entire circumferential direction.
  • a joint portion (FIG. 1, FIG. 1) connected to a first base portion (a base portion having the same structure as the first base portion 30A shown in FIG. 1, FIG. 2, etc.).
  • a connecting portion having the same structure as the joint portion 15 indicated by 2 etc. is provided.
  • This joint portion is fixed to the bottom portion 612A of the cylindrical body 612 with the same structure as that of the first embodiment (the structure fixed to the cylindrical body 12).
  • the joint portion fixed to the cylindrical body 612 has the same structure as the first base portion 30A shown in FIGS. It is connected with the same connection structure as the overturn prevention device 1 shown by.
  • the rod guide portion 617 is fixed to the opening end provided on the other side (upper end side) in the longitudinal direction of the cylindrical body 612 in a fitted state.
  • the rod guide portion 617 is disposed so as to close a region other than the shaft portion 613A in the opening end portion of the cylindrical body 612, and a through-hole portion 617A as shown in FIG. Is formed.
  • the shaft portion 613A of the rod portion 613 is inserted through the through-hole portion 617A.
  • the piston portion 616 is disposed inside the cylinder portion 611 and is configured to be slidable along the longitudinal direction (predetermined direction) of the cylinder portion 611.
  • the piston portion 616 has the same configuration as that of the piston portion 16 of the first embodiment except that the groove portion 16D (FIG. 9B) is changed to a cylindrical surface portion, and is configured in a cylindrical shape with a predetermined direction (damper).
  • the configuration is such that the longitudinal direction of the device 610 is the thickness direction.
  • the outer peripheral portion of the piston portion 616 is configured as a cylindrical surface portion 616D.
  • the entire outer circumferential surface of the cylindrical surface portion 616D is a cylindrical surface centered on the center line L1.
  • the piston part 616 is fixed to the rod part 613 so as not to be relatively displaceable.
  • the rod part 613 differs from the first embodiment only in the shaft part 613A, and is the same as that in the first embodiment except for the shaft part 613A.
  • the joint portion fixed to the shaft portion 613A has the same form as the joint portion 15 of the first embodiment (the joint portion 15 connected to the shaft portion 13A).
  • the rod portion 613 is inserted through the through-hole portion 617A shown in FIG. 15A and straddles the inside and the outside of the cylinder portion 611, and one end thereof is fixed to the piston portion 616 so as not to be relatively rotatable.
  • the other end is connected to a second base portion not shown.
  • the second base portion having the same structure as the second base portion 30B of the overturn prevention device 1 shown in FIG. 1 and the like is connected to the joint portion of the rod portion 613 with the same structure as the overturn prevention device 1 of the first embodiment. Has been.
  • the regulating part 680 regulates the relative rotation of the rod part 613 with respect to the cylinder part 611 between the rod part 613 and the rod guide part 617.
  • the restricting portion 680 includes an outer peripheral portion 614 of the rod portion 613 and a through-hole portion 617A of the rod guide portion 617.
  • the outer peripheral portion 614 of the rod portion 613 is configured such that the outer edge of the cut surface in the direction orthogonal to the predetermined direction is a non-circular outer surface portion, and specifically includes a cylindrical surface portion 614A and a flat portion 614B.
  • the cylindrical surface portion 614A corresponds to an example of an outer peripheral curved surface portion whose outer surface is configured as a curved surface, and the outer surface is a portion configured as a part of a cylindrical surface centered on the center line L1.
  • the flat portion 614B corresponds to an example of an outer peripheral flat surface portion whose outer surface is configured as a flat surface, and is a portion where the outer surface is configured as a part of a plane parallel to the center line L1.
  • the inner peripheral portion of the through-hole portion 617A is configured as a non-circular inner surface portion in which the inner edge of the cut surface in the direction orthogonal to the predetermined direction is non-circular and fits with the outer peripheral portion 614 (non-circular outer surface portion). Yes.
  • the inner peripheral portion of the through-hole portion 617A includes a cylindrical surface portion 618A and a flat portion 618B.
  • the cylindrical surface portion 618A is a portion configured as a part of a cylindrical surface whose outer surface is centered on the center line L1.
  • the cylindrical surface portion 618A corresponds to an example of an inner peripheral curved surface portion, and the inner surface is configured as a curved surface and fits with the cylindrical surface portion 614A (the outer peripheral curved surface portion).
  • the flat portion 618B is a portion whose outer surface is configured as a part of a plane parallel to the center line L1.
  • the flat portion 618B corresponds to an example of a flat surface portion on the inner peripheral side, and has an inner surface configured as a flat surface, facing the flat portion 614B (a flat surface portion on the outer peripheral side) and extending in a predetermined direction.
  • the restricting portion 680 configured in this way has an outer peripheral portion 614 (non-circular outer surface) of the shaft portion 613A along the inner peripheral portion (non-circular inner surface portion) of the through-hole portion 617A. Part) move. Specifically, the cylindrical surface portion 614A moves along the cylindrical surface portion 618A, and the flat portion 614B moves along the flat portion 618B. For this reason, in the range in which the rod part 613 can move, the relative position of the flat part 614B with respect to the rod guide part 617 (the position in the circumferential direction with the center line L1 as the center) is always maintained at a position facing the flat part 618B. . Therefore, the rod portion 613 does not rotate relative to the cylinder portion 611 including the rod guide portion 617 and is prevented from rotating.
  • the damper device 610 of this configuration the relative rotation of the rod portion 613 with respect to the cylinder portion 611 can be directly regulated between them, and the influence on other parts due to the regulation can be suppressed. .
  • the rod portion with respect to the cylinder portion 611 is configured by a simple structure in which both the outer peripheral portion of the rod portion 613 and the inner peripheral portion of the through hole portion 617A of the rod guide portion 617 are configured to have a non-circular cross section.
  • the relative rotation of 613 can be more reliably regulated.
  • the rod part 613 and the rod guide part 617 become the process object site
  • the 1st base part (refer 1st base part 30A of FIG. 1) arrange
  • the fall prevention device is configured to include the second base portion 30B in FIG. This overturn prevention device also maintains the orientation of the first base portion connected to the cylinder portion 611 and the orientation of the second base portion connected to the rod portion 613 in a fixed relationship with the furniture (article) and the ceiling. Can be installed between.
  • the cylindrical body 612 and the joint part are the same as those in the sixth embodiment.
  • the piston portion 716 is different from the sixth embodiment only in the position where the rod portion is coupled, and is the same as the piston portion 616 (FIG. 15B) of the sixth embodiment except for this point.
  • the damper device 710 according to the seventh embodiment and the overturn prevention device using the damper device 710 are different from the sixth embodiment only in the configuration, and are the same as those in the sixth embodiment except for these configurations. Therefore, detailed description of the same parts as those in the sixth embodiment is omitted. In the damper device 710 of FIGS.
  • the same cylindrical body 612 as that of Embodiment 6 is used, and as shown in FIG. 17A, on the other longitudinal side (upper end side) of the cylindrical body 612.
  • a rod guide portion 717 is fixed to the formed opening end portion in a fitted state.
  • the rod guide portion 717 is disposed so as to close a region other than the shaft portion 713A in the opening end portion of the cylindrical body 612, and a through-hole portion 717A as shown in FIG. Has been.
  • the shaft portion 713A of the rod portion 713 is inserted through the through-hole portion 717A.
  • the regulating part 780 regulates relative rotation of the rod part 713 with respect to the cylinder part 711 between the rod part 713 and the rod guide part 717.
  • the restricting portion 780 includes an outer peripheral portion of the rod portion 713 (an outer peripheral portion 714 of the shaft portion 713A) and a through-hole portion 717A of the rod guide portion 717.
  • the center L2 of the through-hole portion 717A is the center of the piston portion 716 (the position of the center line L1) in the plane direction orthogonal to the longitudinal direction of the cylinder portion 711 (the direction of the center line L1 corresponding to the predetermined direction). It is off.
  • the center L3 of the rod portion 713 is shifted from the center of the piston portion 716 (the position of the center line L1).
  • the center L2 of the through-hole portion 717A and the center L3 of the rod portion 713 are on the same straight line parallel to the center line L1.
  • the restriction portion 780 is provided with the rod portion 713 eccentric, and the relative position in the circumferential direction of the rod portion 713 (the circumferential position around the center line L1) is always kept at the position of the through-hole portion 717A. It is. Therefore, the rod portion 713 does not rotate relative to the cylinder portion 711 including the rod guide portion 717, and is prevented from rotating.
  • the center of the rod portion 713 and the center of the through-hole portion 717A are shifted from the center of the piston portion 716 (the position of the center line L1) and decentered. Relative rotation can be more reliably regulated.
  • FIGS. 18 and 19 a damper device according to an eighth embodiment and a tipping prevention device using the damper device will be described with reference mainly to FIGS.
  • the configuration of the rod portion is a plurality of different shapes instead of the rod portion 613 (FIG. 15B).
  • the point from which the rod part 813A, 814B of this book was provided differs from Embodiment 6.
  • FIG. The configuration of the rod guide is different from that of the sixth embodiment in that a rod guide portion 817 having a different shape is provided instead of the rod guide portion 617 (FIG. 15A).
  • the configuration of the cylindrical body 612 and the joint portion fixed to the cylindrical body 612 is the same as that of the sixth embodiment.
  • the piston portion 816 differs from the sixth embodiment only in the position where the rod portions 813A and 814B are connected. Except for this point, the piston portion 816 is the same as the piston portion 616 of the sixth embodiment (FIG. 15B).
  • the damper device 810 according to the eighth embodiment and the overturn prevention device using the damper device 810 differ from the sixth embodiment only in the configuration, and are the same as those in the sixth embodiment except for these configurations. Therefore, detailed description of the same parts as those in the sixth embodiment is omitted. In the damper device 810 of FIGS.
  • the same cylindrical body 612 as that of the sixth embodiment is used, and as shown in FIG. 19A, on the other longitudinal side (upper end side) of the cylindrical body 612.
  • a rod guide portion 817 is fixed to the formed opening end portion in a fitted state.
  • the rod guide portion 817 is disposed so as to close a region other than the shaft portions 813X and 813Y in the opening end portion of the cylindrical body 612, and a plurality of through-hole portions 817A and 817B as shown in FIG. Is formed.
  • the plurality of through-hole portions 817A and 817B extend in a predetermined direction (longitudinal direction of the cylinder portion 811), and the shaft portions 813X and 813Y of the rod portions 813A and 813B are inserted therethrough.
  • Joint portions similar to the joint portion 15 of the first embodiment are fixed to the shaft portions 813X and 813Y of the rod portions 813A and 813B.
  • both shaft portions 813X and 813Y are fixed to the same joint portion, and this joint portion has, for example, a through hole (a through hole similar to the through hole 15A shown in FIG. The direction is orthogonal to the axial direction of 813X and 813Y.
  • the joint portions fixed to the shaft portions 813X and 813Y are connected to the second base portion (the same base portion as the second base portion 30B shown in FIG. 1 and the like) with the same connection structure as in the first embodiment. Yes.
  • the regulating portion 880 regulates the relative rotation of the rod portions 813A and 813B with respect to the cylinder portion 811 between the rod portions 813A and 813B and the rod guide portion 817.
  • the restricting portion 880 includes both shaft portions 813X and 813Y of the rod portions 813A and 813B and through-hole portions 817A and 817B through which these are inserted, and the outer peripheral portions of both the shaft portions 813X and 813Y, It is comprised by the inner peripheral part of through-hole part 817A, 817B.
  • both shaft portions 813X and 813Y around the center line L1 are regulated so as not to be changed by both through-hole portions 817A and 817B, and both shaft portions 813X and 813Y are The relative rotation is prevented.
  • the relative rotation of the rod portions 813A and 813B with respect to the cylinder portion 811 can be more reliably restricted by a simple structure in which a plurality of rod portions 813A and 813B and a plurality of through-hole portions 817A and 817B are provided. Can do. Further, since the rotation is prevented in a manner that is regulated at a plurality of locations, the rotation is more advantageous in the case of rotation when a force in the circumferential direction is strongly applied.
  • Embodiment 9 will be described mainly with reference to FIG. 20 includes a damper main body 902 instead of the damper device 10 (FIG. 1 and the like). Further, the fall prevention device 901 is provided with a first base portion 930A instead of the first base portion 30A (FIG. 1 and the like) and a second base portion 930B instead of the second base portion 30B (FIG. 1 and the like). It has been. A regulation unit 980 is added to the fall prevention device 901. The fall prevention device 901 is different from the fall prevention device 1 of the first embodiment in these points. In addition, the fall prevention device 901 in FIG. 20 is denoted by the same reference numerals as those in the fall prevention device 1 of the first embodiment, with the same configuration as that of the fall prevention device 1 (FIG. 1 and the like) of the first embodiment. .
  • the damper device 910 includes a damper main body 902 including a cylinder portion 911, a piston portion (not shown), and a rod portion 13, and a restriction portion 980.
  • the cylinder portion 911 has a configuration similar to the cylinder portion 11 shown in FIG. 9B, and the convex portion 12D (FIG. 9B) is not provided.
  • the only difference from the cylinder portion 11 is that the entire inner peripheral surface is configured as a cylindrical surface.
  • the piston portion (not shown) disposed in the damper main body 902 has a configuration similar to the piston portion 16 (FIG. 9B) shown in FIG. 9B, and the groove portion 16D is not provided. Only the point that the entire outer peripheral surface is configured as a cylindrical surface is different from the piston portion 16.
  • the damper main body 902 is the same as the damper apparatus 10 except for these configurations, differing from the damper apparatus 10 (FIG. 1, FIG. 9B, etc.) of the first embodiment only in the configuration.
  • the cylinder portion 911 is formed in a cylindrical shape and has a longitudinal shape extending in a predetermined direction, and a connecting portion (joint portion 15) connected to the first base portion 930A is provided on one side in the longitudinal direction. .
  • a rod guide portion (not shown or omitted) having a through-hole portion is provided on the other side in the longitudinal direction of the cylinder portion 911.
  • This rod guide part has the same configuration as the rod guide part 17 of the first embodiment shown in FIG. 9A, and the same through-hole part as the through-hole part 17A shown in the first embodiment (FIG. 9A). Is formed.
  • the structure for connecting the joint portion 15 provided at the lower end of the cylinder portion 911 and the first base portion 930A is the same as the structure for connecting the joint portion 15 and the first base portion 30A in the first embodiment.
  • the piston part is disposed inside the cylinder part 911 and moves in a predetermined direction (longitudinal direction of the cylinder part 911).
  • the rod portion 13 has the same configuration as the rod portion 13 (FIG. 1 and the like) of the first embodiment, and is inserted into a through-hole portion (not shown) provided at the upper end portion of the cylinder portion 911 and the cylinder portion. It straddles the inside and outside of 911.
  • One end portion of the rod portion 13 is connected to a piston portion disposed in the cylinder portion 911, and the other end portion of the rod portion 13 is connected to the second base portion 930B.
  • the structure for connecting the joint portion 15 provided at the upper end of the rod portion 13 and the second base portion 930B is the same as the structure for connecting the joint portion 15 and the second base portion 30B in the first embodiment.
  • the first base portion 930A shown in FIG. 20 is the first base portion 30A according to the first embodiment only in that a rotation connecting portion 981 that is a portion that rotatably connects the first member 982 is provided. 1), except for this configuration, it is the same as the first base portion 30A.
  • the second base portion 930B differs from the second base portion 30B (FIG. 1 and the like) of the first embodiment only in that a rotation connecting portion 983 that is a portion that rotatably connects the second member 984 is provided. Other than this configuration, the second base portion 30B is the same.
  • the restriction part 980 restricts the rod part 13 from rotating relative to the cylinder part 911.
  • the restricting portion 980 is connected to a base portion main body 931A that is a part of the first base portion 930A and a base portion main body 931B that is a part of the second base portion 930B.
  • the base portion main body 931A corresponds to an example of a first target portion.
  • the base portion main body 931B corresponds to an example of a second target portion.
  • the regulating unit 980 is configured as a regulating mechanism that regulates the relative rotation of the second base unit 930B (second target unit) with respect to the first base unit 930A (first target unit).
  • the restriction portion 980 includes a first member 982 that is rotatably connected to the first base portion 930A, and a second member 984 that is rotatably connected to the second base portion 930B, and includes the first base portion 930A.
  • the link mechanism is linked to the movement of the second base portion 930B.
  • the first member 982 is configured as, for example, a plate-like and longitudinal member, and is connected to the base portion main body 931A of the first base portion 930A so as to be rotatable about the central axis G1.
  • the first member 982 moves relative to the base portion main body 931A in a plane direction orthogonal to the central axis G1.
  • the second member 984 is configured, for example, as a plate-like and longitudinal member, and is connected to the base portion main body 931B of the second base portion 930B so as to be rotatable about the central axis G2.
  • the second member 984 moves relative to the base portion main body 931B in a plane direction orthogonal to the central axis G2.
  • the ends of the first member 982 and the second member 984 are connected so that one can rotate relative to the other.
  • the central axis G3 when the second member 984 rotates relative to the first member 982 is kept substantially parallel to the central axes G1 and G2.
  • the central axes G1, G2, and G3 are kept substantially parallel to the central axes of the bolts 45 provided on the first base portion 930A and the second base portion 930B.
  • all of the first base portion 930A, the second base portion 930B, the first member 982, and the second member 984 are the centers of the bolts 45 provided on the first base portion 930A. Located on a predetermined plane orthogonal to the axis.
  • the first base portion 930A, the second base portion 930B, the first member 982, and the second member 984 have their longitudinal directions oriented along the predetermined plane or slightly inclined with respect to the predetermined plane. Displaces while. These are regulated so that their respective longitudinal directions are not largely inclined with respect to the predetermined plane.
  • the relative rotation of the rod portion 13 with respect to the cylinder portion 911 is more reliably performed by the mechanism (the restriction portion 980 configured as a restriction mechanism) disposed outside the cylinder portion 911 and the rod portion 13. Can be regulated.
  • the fall prevention device 901 has one or more of the central axes of the bolts 45 provided on the central axes G1, G2, G3 and the first base part 930A and the second base part 930B as other axes. On the other hand, it may be slightly deformed so as to be slightly inclined. Such deformation may occur due to the clearance of the connecting portion, the bending of the member, or the like.
  • Embodiment 10 will be described mainly with reference to FIG. 21 includes a damper main body 1002 instead of the damper device 10 (FIG. 1 and the like), and a second base portion 1030B instead of the second base portion 30B (FIG. 1 and the like). It has been. Further, a regulation unit 1080 is added to the fall prevention device 1001. The fall prevention device 1001 is different from the fall prevention device 1 of the first embodiment in these points. In addition, the fall prevention device 1001 of FIG. 21 has the same configuration as the fall prevention device 1 (FIG. 1 and the like) of the first embodiment by the same reference numerals as the fall prevention device 1 of the first embodiment. . For example, in the overturn prevention device 1001 shown in FIG.
  • the first base portion 30A has the same configuration as the first base portion 30A (FIG. 1 and the like) of the first embodiment.
  • the second base portion 1030B is different from the second base portion 30B (FIG. 1 and the like) of the first embodiment only in that a connection structure portion 1090 that is a portion for connecting the shaft-like member 1086 is provided. 2 is the same as the base portion 30B (FIG. 1 etc.).
  • the damper device 1010 includes a damper body 1002 including a cylinder portion 1011, a piston portion (not shown), and a rod portion 13, and a restriction portion 1080.
  • the damper main body 1002 is different from the damper main body 902 of the ninth embodiment only in that a guide portion 1082 is added.
  • the restricting portion 1080 restricts the rod portion 13 from rotating relative to the cylinder portion 1011.
  • the restricting portion 1080 includes a guide portion 1082 fixed to the cylinder portion 1011 and a shaft-like member 1086 that can move relative to the guide portion 1082.
  • the guide portion 1082 may be formed as an integral member with the cylinder portion 1011 corresponding to the first target portion, or may be configured as a separate member and fixed by a fastening member or the like.
  • a hole portion 1084 extending in parallel with the longitudinal direction of the cylinder portion 1011 is formed in the guide portion 1082, and the shaft portion 1087 of the shaft-like member 1086 is inserted into the hole portion 1084.
  • the shaft member 1086 includes a shaft portion 1087 configured in a columnar shape and a rod shape, and a mounting portion 1088 connected to the upper end portion of the shaft portion 1087.
  • the shaft-like member 1086 is connected to a second base portion 1030B corresponding to a second target portion so that a mounting portion 1088 provided at an upper end portion thereof is rotatable.
  • the shaft portion 1087 and the shaft portion 13A of the rod portion 13 are always kept in parallel, and the shaft portion 1087 is maintained in this parallel state. Is configured to move relative to the cylinder portion 1011.
  • the rod portion 13 and the shaft-like member 1086 maintain a parallel state. Move as it is. Regardless of the position of the rod portion 13 and the shaft-like member 1086, the center axis of each bolt 45 of the first base portion 30A and the second base portion 930B and the rotation axis G4 of the shaft-like member 1086 are in a parallel state or Any one or more axes are maintained slightly tilted from the parallel state.
  • the relative rotation of the rod portion 13 with respect to the cylinder portion 1011 is more reliably restricted by the mechanism (the restriction portion 1080 configured as a restriction mechanism) disposed outside the cylinder portion 1011 and the rod portion 13. can do.
  • the fall prevention device is attached to the furniture, but it may be attached to an article such as a bookcase or a refrigerator that may fall over due to shaking such as an earthquake.
  • the fall prevention device is attached to the furniture placed on the floor surface with the rear surface facing the wall surface, but is placed on the floor surface without being adjacent to the wall surface. It may be attached to the furniture.
  • the pressure damper is used. However, a dual-effect damper may be used as long as it exhibits a predetermined damping force during the contraction operation.
  • the damper in which the hydraulic oil and the compressed gas are sealed in the cylinder is used.
  • the liquid pressure in which another liquid is sealed may be used as long as it generates a predetermined damping force during the contraction operation. It may be a damper or another type of damper.
  • the compressed gas is sealed in the cylinder so that the expansion force of the compressed gas acts in the extending direction. However, the force acting in the extending direction may be generated by other methods.
  • the overturn prevention device includes the fall prevention unit, but the fall prevention unit may not be provided. Further, the fall prevention part may be formed integrally with the article side base part.
  • the overturn prevention device includes the angle restricting unit, but the angle restricting unit may not be provided. Further, the angle restricting portion may be formed integrally with the article-side base portion or the damper cylinder.
  • the configurations of the first to fifth embodiments may be combined with the configurations of the sixth to eighth embodiments.
  • the configurations of the ninth and tenth embodiments may be combined with the combined configuration or any of the configurations of the first to eighth embodiments.
  • the first member 982 of the restricting portion 980 may be rotatably connected to the cylinder portion, and the second member 984 is rotatable relative to the rod portion 13. It may be connected to.
  • second base part 80,280,380,480,580,680,780,880 ... restricting part, 284 ... protrusion Member, 286 ... Biasing part, 288 ... Housing part (hole part), 312D ... Flat part (second inner surface part), 316D ... Flat part (second outer surface) ) 412A ... Inner peripheral part (elliptical inner surface part), 416A ... Outer peripheral part (elliptical outer surface part), 512D ... Groove part on the cylinder part side, 516D ... Convex part on the piston part side, 614A ...
  • Cylindrical surface part ( 614B: flat surface (outer peripheral flat surface), 618A: cylindrical surface (inner peripheral curved surface), 618B: flat (inner peripheral flat surface), 930A: first base Part (first target part), 930B, 1030 ... second base part (second target part), 980, 1080 ... regulation part (regulation mechanism), 1011 ... cylinder part (first target part), C ... Ceiling, F ... Furniture (article)

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

Selon la présente invention, la rotation, par rapport à un cylindre, d'une tige configurant ce dispositif amortisseur est restreinte. Un joint (15) (une partie de liaison) relié à une première base (30A) est disposé sur un côté du cylindre (11) de ce dispositif amortisseur (10), et de l'autre côté est prévu un guide de tige (17) ayant un trou traversant (17A). A l'intérieur du cylindre (11) est agencé un piston (16) qui se déplace dans une direction prescrite. La tige (13) est passée à travers le trou traversant (17A) de façon à être entre l'intérieur et l'extérieur du cylindre (11) ; une extrémité de la tige est reliée au piston (16) et l'autre extrémité de celle-ci est reliée à une seconde base (30B). Une unité de restriction (80) restreint la tige (13) pour l'empêcher de tourner par rapport au cylindre (11).
PCT/JP2017/007682 2016-03-24 2017-02-28 Dispositif amortisseur et dispositif de prévention de chute Ceased WO2017163779A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016059643A JP2017172704A (ja) 2016-03-24 2016-03-24 ダンパ装置、及び転倒防止装置
JP2016-059643 2016-03-24

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Publication number Priority date Publication date Assignee Title
CN108771322B (zh) * 2018-05-24 2021-01-08 温州职业技术学院 一种多功能心理健康测试台
CN109972696B (zh) * 2019-04-18 2021-05-25 上海人民企业集团水泵有限公司 安装稳定且具有防护功能的无负压供水远程监控设备箱

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4821040B1 (fr) * 1970-07-27 1973-06-26
JPS62169578U (fr) * 1986-04-17 1987-10-27
JPH1151010A (ja) * 1997-08-04 1999-02-23 Fuji Oozx Inc ピストンロッドの回転を防止したシリンダ装置
JP2008069939A (ja) * 2006-09-15 2008-03-27 Fuji Latex Kk ショック・アブソーバ
JP2008267494A (ja) * 2007-04-20 2008-11-06 Kyoei Ind Co Ltd 流体ダンパ
JP2009024817A (ja) * 2007-07-23 2009-02-05 Fuji Latex Kk ショックアブソーバー
WO2009028264A1 (fr) * 2007-08-31 2009-03-05 Piolax Inc. Dispositif d'amortissement
JP2009127651A (ja) * 2007-11-20 2009-06-11 Nissan Motor Co Ltd フリクション調整装置
JP2015006330A (ja) * 2013-05-29 2015-01-15 カヤバ工業株式会社 転倒防止装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4821040B1 (fr) * 1970-07-27 1973-06-26
JPS62169578U (fr) * 1986-04-17 1987-10-27
JPH1151010A (ja) * 1997-08-04 1999-02-23 Fuji Oozx Inc ピストンロッドの回転を防止したシリンダ装置
JP2008069939A (ja) * 2006-09-15 2008-03-27 Fuji Latex Kk ショック・アブソーバ
JP2008267494A (ja) * 2007-04-20 2008-11-06 Kyoei Ind Co Ltd 流体ダンパ
JP2009024817A (ja) * 2007-07-23 2009-02-05 Fuji Latex Kk ショックアブソーバー
WO2009028264A1 (fr) * 2007-08-31 2009-03-05 Piolax Inc. Dispositif d'amortissement
JP2009127651A (ja) * 2007-11-20 2009-06-11 Nissan Motor Co Ltd フリクション調整装置
JP2015006330A (ja) * 2013-05-29 2015-01-15 カヤバ工業株式会社 転倒防止装置

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TW201738478A (zh) 2017-11-01

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