JP2014162368A - Caster device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a caster device which protects function of an appliance from earthquake or excessive shock.SOLUTION: The caster device comprises: a wheel; a shaft extending in a vertical direction, whose lower end is coupled to the wheel, and whose upper end is coupled to an appliance; a storage body into which the shaft penetrates, which is attached so as to move freely in a vertical direction with respect to the shaft, and which stores the wheel from an opening part opening downward; and a quake absorber attached to a peripheral edge part of the opening part of the storage body. On a surface facing to a floor surface of the quake absorber, at least two grooves which intersect each other are provided. By moving the storage body downward with respect to the shaft, separating the wheel from the floor surface for storing it in the storage body, and by coming into contact of the quake absorber to the floor surface, the storage body supports the appliance. By moving the storage body upward with respect to the shaft, separating the quake absorber from the floor surface, exposing the wheel from the storage body, and by coming into contact of the wheel to the floor surface, the wheel supports the appliance movably.

Description

  The present invention is a caster that is attached to relatively heavy equipment such as office equipment and production peripheral equipment, and is capable of moving the equipment, and protects the functions of the equipment from earthquakes and excessive shocks when the equipment is fixedly installed. Relates to the device.

  In recent years, there has been a great interest in preparing for major earthquakes. In particular, complex office equipment installed in offices on higher floors often has a load of around 200 kg, and it has become known that long-period vibrations can cause the equipment to run away for several meters or more. It was.

  In general, casters are attached to office equipment such as office equipment, and a rolling lock that stops the rolling of the casters is used to fix the casters at an arbitrary installation location.

  Further, various mechanisms for suppressing the movement of equipment using a vibration absorber such as an adhesive mat have been proposed by Patent Literature 1 to Patent Literature 6 and the like.

  Patent Document 1 discloses a seismic device for instrument installation, and the seismic device for instrument installation forms a support recess in the substrate and attaches the upper surface of the adhesive vibration absorbing plate material to the back of the bottom of the support recess. In addition, by having a configuration in which the lower surface of the adhesive vibration absorbing plate material can be appropriately attached to the installation member, the lower surface of the adhesive vibration absorbing plate material is attached to the floor surface, and then the caster such as a bed in the supporting recess. If this is placed, this caster can be supported without sticking to the surface of the adhesive vibration-absorbing plate. Patent Document 2 discloses a fixture for fixing a device installed on the floor, and the horizontal movement of the device is restrained by an adhesive mat that is horizontally inserted into a support leg of the device and adhered to the bottom surface. Is something that can be done. Patent Document 3 discloses a vibration-proof and sound-proof adjuster (which does not have casters) while being attached to the lower end of furniture or the like and adjusting the height. Patent Document 4 discloses an earthquake-resistant tool (which does not have a caster) that prevents furniture and the like from shaking and falling. Patent document 5 is disclosing about the earthquake-resistant support (it does not have a caster) used for fall prevention etc. of furniture etc. by an earthquake etc. Patent Document 6 discloses an earthquake-resistant fixture (which does not have casters) that is used by being attached to a height-adjusting leg bracket for installing an object to be installed on a predetermined floor surface while adjusting the height. doing. Various proposals have also been made for adhesive mats (see, for example, Patent Documents 7 and 8).

Japanese Patent Laid-Open No. 11-141611 JP 2011-10691 A JP 2005-87671 A JP 2006-239223 A JP 2010-22436 A JP 2008-174900 A JP 2008-75704 A JP 2010-116508 A

  However, when an earthquake or excessive impact is applied to the equipment, even if the rolling lock is applied, sliding movement is unavoidable, the higher the floor, the larger the sliding movement, It will also collide with people and become an obstacle to evacuation routes.

  The earthquake-proof device for instrument installation disclosed in Patent Document 1 needs to lift a device once and then place a caster in a concave portion of a substrate. Therefore, when moving the device, it is necessary to lift the device again and remove the seismic device for installing the device from the caster, and the inconvenience increases as the weight of the device increases.

  Although the fixing tool disclosed in Patent Document 2 can be installed without lifting the device, it is provided as a device separate from the support legs of the device including the casters, and is attached and detached every time it is moved. Is inconvenient. In addition, since the load of the device is not applied to the fixture, the effect of preventing movement of the relatively heavy device is low. Also, the inventions of Patent Documents 3 to 6 do not assume that casters are attached.

  Therefore, the object of the present invention is to prevent sliding movement of the equipment by the vibration absorber when the equipment is fixedly installed, and when the equipment needs to be moved, the caster can be rolled by a simple operation. It is an object of the present invention to provide a caster device for achieving a stable state.

  A first configuration of a caster device according to the present invention for achieving the above object is a caster device attached to a device, which is a wheel and a member extending in a vertical direction, and a lower end portion is coupled to the wheel, and an upper end A shaft that is coupled to the device, a shaft that passes through the shaft, is mounted so as to be movable up and down with respect to the shaft, and further can accommodate a wheel from an opening that opens downward, and a peripheral edge of the opening of the housing A vibration absorber attached to the section, the surface facing the floor surface of the vibration absorber is provided with at least two intersecting grooves, and the storage body is moved downward relative to the shaft to move the wheel Is separated from the floor surface and stored in the storage body, and the vibration absorber is in contact with the floor surface, so that the storage body supports the device, and the storage body is moved upward with respect to the shaft. Wheels away from the floor Is exposed from the housing body, that the wheels are in contact with the floor surface, the wheel is characterized in that the movably supported devices.

  The second configuration of the caster device according to the present invention is a caster device attached to a device, a wheel and a member extending in a vertical direction, a lower end portion coupled to the wheel and an upper end portion coupled to the device, The shaft penetrates and is attached to the shaft so as to be movable up and down, and further, an inner frame housing that can store the wheel from an opening that opens downward, and the vertical movement relative to the inner frame housing A ring-shaped outer frame container that fits to the outer periphery of the inner frame container, and a vibration absorber that is attached to the peripheral edge of the lower end opening of the outer frame container so as to face the floor surface. On the surface facing the floor surface, at least two intersecting grooves are provided, and the outer frame housing body is moved downward relative to the inner frame housing body in a state where the wheels are in contact with the floor surface. Is grounded to the floor, and the vibration absorber is grounded to the floor. By moving the inner frame storage body upward relative to the outer frame storage body and separating the wheels from the floor surface, the inner frame storage body and the outer frame storage body support the device, and the vibration absorber is the floor surface. The inner frame storage body is moved downward with respect to the outer frame storage body in the state of being grounded to ground the wheel to the floor surface, and the outer frame storage body is in contact with the inner frame storage body in a state where the wheel is grounded to the floor surface. By moving the seismic absorber away from the floor surface by moving the wheel upward, the wheels support the device movably.

  According to the caster device of the present invention, when the equipment is installed and fixed, the equipment can be fixed by the vibration absorber without lifting the equipment, and the wheels can be prevented from rolling. In addition, when it becomes necessary to move the device, the fixing by the vibration absorber is released by a simple operation, and the wheel can be moved by ground contact.

  The storage unit with a vibration absorber for fixing the device is integrated with the wheel, and it has high earthquake resistance, protects the function of the device from earthquakes and excessive shocks, and moves the storage unit up and down. Only with this operation, the fixed state and the movable state can be easily switched.

  Further, by providing at least two intersecting grooves on the surface facing the floor surface of the vibration absorber and injecting water into the grooves, the vibration absorber can be easily separated from the floor surface.

It is the whole side view which attached the caster apparatus in the 1st Embodiment of this invention to office equipment. It is a figure which shows the structural example of the caster apparatus 10 in the 1st Embodiment of this invention. 1 is an exploded view of a caster device 10. FIG. 2 is a bottom view of the caster device 10. FIG. In the caster device 10, the wheel 11 is in contact with the floor surface, and the flange 14a of the storage body 14 is away from the floor surface, and the office device 1 is movable. In the caster device 10, the flange 14a of the storage body 14 is in contact with the floor surface, and the wheels 11 are separated from the floor surface, and the office equipment 1 is fixed. It is a figure which shows the structural example of the vibration absorber. It is a figure which shows the attachment pattern of the several vibration absorber 18. It is a figure which shows the storage body 14 processed so that thickness may differ alternately. It is a figure which shows another structural example of the vibration absorber. It is a figure which shows the structural example of the flange 14 corresponding to the vibration absorber 18 of FIG. It is a figure which shows the structural example of 10 A of caster apparatuses in the 2nd Embodiment of this invention. FIG. 6 is a perspective view showing a configuration example of an inner frame storage body 141 and an outer frame storage body 142. 6 is a perspective view showing another configuration example of the inner frame storage body 141. FIG. In the caster device 10A, the wheel 11 is in contact with the floor surface, and the flange 14a of the outer frame housing 142 is away from the floor surface, and the office device 1 is movable. In the caster device 10A, the flange 14a of the storage body 14 is in contact with the floor surface, and the wheels 11 are separated from the floor surface, and the office equipment 1 is fixed.

  Embodiments of the present invention will be described below with reference to the drawings. However, such an embodiment does not limit the technical scope of the present invention.

(First embodiment)
FIG. 1 shows an overall side view in which a caster device according to a first embodiment of the present invention is attached to office equipment. The office equipment 1 is a so-called multifunction machine that performs a plurality of functions such as a copy function, a fax function, and a scan function that are generally used in an office, for example, and often has a weight of about 100 to 200 kg. The upper end side of the caster device 10 is attached to the four corners of the bottom surface of the office device 1, and the lower end side of the caster device 10 is in contact with the floor surface to support the office device 1.

  2A and 2B are diagrams showing a configuration example of the caster device 10 according to the first embodiment of the present invention. FIG. 2A is a side view and FIG. 2B is a side sectional view. FIG. 3 is an exploded view of the caster device 10.

  The caster device 10 includes a wheel 11, a shaft 12 connected to the wheel 11, a C-ring 13 attached to the shaft 12 so that the shaft 12 penetrates, a storage body 14, a handle 15, and a first lock nut. 16 and a second lock nut 17. In FIG.2 (b), elements other than the wheel 11 and the shaft 12 are shown as a cross section.

  The shaft 12 is a male screw portion whose lower end portion is coupled to the wheel 11 and extends in the vertical upward direction, and an upper portion having a predetermined length including the upper end portion is threaded. The upper end portion of the shaft 12 is The shaft 12 is fixed to the office equipment 1 by being screwed with a female screw portion provided on the bottom surface and further tightening the second lock nut 17. The handle 15, the first lock nut 16, and the second lock nut 17 are also screwed into the male thread portion of the shaft 12.

  The storage body 14 has a hemispherical shape having an internal space in which the wheel 11 can be stored, has an opening that opens downward, and has a shape with a bowl facing downward, as shown in the figure. Thus, the wheel 11 has an internal space that can turn without contacting the inner wall of the housing 14. Since the storage body 14 is rotatably attached to the shaft 12, the storage body 14 is also rotated in conjunction with the turning of the wheel 11 (while the wheel 11 is in contact with the inner wall of the storage body 14). The storage body 14 can also be reduced in size by having a configuration of turning.

  The shape of the storage body 14 is not limited to the illustrated shape, and may take various shapes such as a rectangular parallelepiped shape having an opening and a quadrangular pyramid shape. The storage body 14 is made of a metal material such as stainless steel or aluminum, or plastic. A flange 14a is formed in a ring shape on the periphery of the opening of the storage body 14 so as to surround the wheel 11, and the storage body 14 is disposed in a direction in which the flange 14a is in contact with the floor surface. On the surface (bottom surface) in contact with the floor surface of the flange 14a, the vibration absorber 18 is stuck continuously or intermittently over the entire circumference.

  FIG. 4 is a bottom view of the caster device 10, showing the vibration absorber 18 attached to the bottom surface of the flange 14a. In the example of FIG. 4A, the vibration absorbers 18 composed of a plurality of pieces are intermittently attached in a ring shape with an interval (gap portion 19). Moreover, in the example of FIG.4 (b), the one vibration absorber 18 formed in the ring shape is stuck continuously, and the surface which touches the floor surface of the vibration absorber 18 is provided for every fixed interval. A plurality of groove portions 18a extending in the radial direction are formed. By providing the gap portion 19 in FIG. 4 (a) and the groove portion 18a in FIG. 4 (b), a portion having no adhesive force or a portion having a relatively weak adhesive force is formed, so that vibration is absorbed in close contact with the floor surface. It becomes easy to peel the body 18 from the floor surface.

  The width and number of the gap portions 19 in FIG. 4A and the shape, number, width and depth of the groove portion 18a in FIG. 4B are appropriately adjusted according to the required adhesive force. Can be done. For example, a relatively strong adhesive force can be obtained by relatively reducing the total area of the gap portion 19 or the groove portion 18a, and an adhesive force can be obtained by relatively increasing the total area of the gap portion 19 or the groove portion 18a. Can be weakened. Of course, the adhesive force is adjusted within a range in which the vibration absorption effect of the adhesive force is secured. Moreover, the sticking area of the vibration absorber 18 can be adjusted also by the area of the flange 14a, and the adhesive force can be adjusted.

  The vibration absorber 18 is referred to as a viscoelastic body, and is made of a material having strong self-adhesiveness, strong rebound resilience, and a small compression set, and is used as, for example, a seismic mat material. , Silicon gel, urethane gel or the like is used as a material, and a suitable material is selected depending on the application, and the adhesive strength thereof can be set as appropriate. A viscoelastic body having a hardness of about Asker C20 to C60 can be used, and Asker C20 to C24 is preferably used in order to improve adhesion to the floor surface. In addition, as the loss tangent tan δ is larger, the viscoelastic body has a higher vibration absorption effect and a smaller rebound resilience. In order to provide self-adhesion and absorb vibration, a rebound resilience of about 0 to 40 is preferable. A further detailed configuration of the vibration absorber 18 and a means for adjusting the adhesive force thereof will be described later.

  The storage body 14 is locked to the handle 15 by a C-ring 13 fitted in the C-ring locking groove 15a of the handle 15, and the storage body 14 does not rotate in conjunction with the vertical movement caused by the rotation of the handle 15. Can be moved up and down. That is, the C ring 13 and the handle 15 function as a position adjusting member for the storage body 14. The first lock nut 16 is a nut for fixing the position of the handle 15.

  Next, the operation of the caster device 10 according to the first embodiment will be described. FIG. 5 shows a state in which the wheel 11 is in contact with the floor and the flange 14a of the storage body 14 is away from the floor, and the office equipment 1 is movable. FIG. 6 shows a state in which the office equipment 1 is fixed in a state where the flange 14a of the storage body 14 is in contact with the floor surface and the wheels 11 are separated from the floor surface. In FIG.5 and FIG.6, elements other than the wheel 11 and the shaft 12 are shown as a cross section.

  The movable state in FIG. 5 and the fixed state in FIG. 6 can be switched by the operator rotating the handle 15 and adjusting the height of the storage body 14. To change from the movable state of FIG. 5 to the fixed state of FIG. 6, the handle 15 is rotated so that the handle 15 moves downward. By downward movement of the handle 15, the storage body 14 is first lowered, the vibration absorber 18 of the flange 14a of the storage body 14 is in contact with the floor surface, and the handle 15 is further rotated to move the handle 15 downward. By moving it, the wheel 11 rises and leaves the floor surface. In this state, the handle 15 is tightened with the first lock nut 16 to fix the position of the handle 15. As a result, the flange 14a of the storage body 14 comes into contact and the wheel 11 is separated from the floor surface. Therefore, the load of the office equipment 1 is received by the vibration absorber 18 of the flange 14a via the shaft 12 and the storage body 14, and the office equipment 1 is fixed to the floor surface. Since the vibration absorber 18 surrounds the wheel 11 and is arranged in a ring shape, it adheres to the floor surface over a wide area, stably supports and fixes the office equipment 1.

  On the other hand, when changing from the fixed state of FIG. 6 to the movable state of FIG. 5, first, the first lock nut 16 is loosened and the first lock nut 16 is raised upward. Preferably, the first lock nut 16 is raised to a position where it abuts against the second lock nut 17. Then, the handle 15 is rotated so that the handle 15 moves upward. Along with the upward movement of the handle 15, first, the wheel 11 gradually descends, the wheel 11 is in contact with the floor surface, and the handle 15 is still rotated, so that the container 14 moves upward, causing vibration. The absorber 18 is peeled off from the floor surface, the storage body 14 is lifted, and the flange 14a of the storage body 14 is separated from the floor surface. Thereby, the load of the office equipment 1 is applied to the wheels 11 in contact with the floor surface via the shaft 12, and the office equipment 1 can move on the floor surface.

  As described above, the caster device according to the first embodiment can be fixed by a vibration absorber with a simple operation without lifting the device when the device is installed and fixed. When the need arises, the fixing by the vibration absorber is released and the wheel can be moved by ground contact. The storage unit with a vibration absorber for fixing the device is integrated with the wheel, and it has high earthquake resistance, protects the function of the device from earthquakes and excessive shocks, and moves the storage unit up and down. Only with this operation, the fixed state and the movable state can be easily switched.

  When the adhesive force of the vibration absorber 18 is superior to the vertical upward force applied to the storage body 14 by the rotation of the handle 15, when the storage body 14 in contact with the floor surface is separated from the floor surface, for example, a spatula The peeling of the vibration absorber 18 may be assisted using a peeling aid such as the above. When the handle 15 is moved upward and the wheel descends and comes into contact with the floor surface, a spatula is inserted between the vibration absorber 18 and the floor surface to forcibly separate the vibration absorber 18 from the floor surface. . At this time, if a surfactant is injected into the gap, it becomes easier to peel off.

  The storage body 14 may be attached to the shaft 12 so as to have a backlash of a predetermined angle (for example, about 3 degrees) with respect to the shaft 12. Thereby, it is possible to peel the vibration absorber 18 continuously and continuously from the floor surface while tilting the storage body 14 upward. As shown in the configuration examples shown in FIGS. 4A and 4B described above, by adjusting the adhesive force, peeling is performed only with the force in the vertical upward direction of the container 14 without using a spatula or the like. A possible configuration can also be adopted.

  7A and 7B are diagrams illustrating a configuration example of the vibration absorber 18, in which FIG. 7A is a top view, FIG. 7B is a side view, and FIG. 7C is a bottom view. The vibration absorber 18 is formed in a shape having an area that can be attached to a plurality of (preferably at least five) flanges 14a of the storage body 14, for example, in a trapezoidal shape with a thickness of about 3 to 6 mm. Is done.

  On the surface of the vibration absorber 18 facing the floor, at least two intersecting grooves 18a are provided as shown in FIG. The groove 18a is preferably formed in a cross shape extending from one end side to the other end side in the vertical and horizontal directions, and has a depth of about 1.5 mm and a width of about 1 mm. By injecting water into the groove 18b when making the movable state from the fixed state, water penetrates between the vibration absorber 18 and the floor surface, and the adhesive force of the vibration absorber 18 to the floor surface is increased. The vibration absorber 18 can be easily peeled off from the floor surface by the operator's manual work without using a peeling aid. According to the experiments by the inventors, it was confirmed that the adhesive force of the vibration absorber 18 formed with the groove 18a to the floor surface is not different from that of the vibration absorber without the groove 18b. In addition, the original adhesive strength is restored by wiping off the water.

  Moreover, the protrusion 18b may be provided in the surface attached to the flange 14a of the vibration absorber 18 as FIG.7 (b) shows. By inserting the protrusion 18b into a recess (not shown) provided on the flange 14a, the vibration absorber 18 can be securely fixed to the flange 14a.

  In the example of FIG. 7, the vibration absorber 18 is designed to have a size capable of adhering up to 12 pieces to the flange 14a. As an example of the dimension, the radial width of the flange 14a (the difference between the outer radius and the inner radius) is 24 mm. If it is about, it is about trapezoid upper base 34mm, lower base 43mm, and height 20mm. Then, using this shape / dimension as a standard shape, the number of vibration absorbers 18 attached to the flange 14a is adjusted according to the magnitude of the load.

  FIG. 8 is a diagram showing an attachment pattern of a plurality of vibration absorbers 18. The relationship between the number of vibration absorbers 18 whose shapes and dimensions are standardized and the load on one wheel is proportional. As an example, if the weight of a device having four wheels is 100 kg, the load applied to one wheel is 25 kg. For a load obtained by adding a roll acceleration of, for example, seismic intensity 7 to a weight of 25 kg, FIG. As shown in Fig. 4, the vibration absorber 18 is designed so that the device can be fixed by attaching five vibration absorbers 18 (when the maximum service load per vibration absorber is designed to be 5 kg). By attaching 8 bodies 18 (see FIG. 8 (b)), it becomes possible to fix a device weighing 160kg, and by attaching 12 vibration absorbers 18 (see FIG. 8 (c)), weight can be increased. A 240 kg device can be fixed.

  Further, when the caster device of the present invention is attached to a relatively light-weight device having a load applied to one wheel of less than 25 kg, even when the container 14 itself is processed so as to be easily twisted and deformed. Good. For example, the hemispherical main body of the storage body 14 is processed such that the cross section facing the floor is alternately different in thickness in the circumferential direction.

  FIGS. 9A and 9B are views showing the storage body 14 processed so that the thicknesses are alternately different. FIG. 9A is a side view, and FIG. 9B is a cross-sectional view taken along line AA in FIG. It is. As shown in the figure, by processing the thick and thin portions alternately, it becomes easy to torsionally deform, and the load load caused by the vibration applied to the relatively lightweight device is twisted. By absorbing by deformation, it can be received by the vibration absorber 18 and the adhesive force can be increased. Thereby, sufficient adhesive force of the vibration absorber 18 can be exhibited also to a comparatively lightweight apparatus.

  FIG. 10 is a diagram illustrating another configuration example of the vibration absorber 18, FIG. 10 (a) is a top view, FIG. 10 (b) is a side view, and FIG. 10 (c) is a bottom view. The vibration absorber 18 in FIG. 10 has a hole 18c penetrating in the thickness direction in the central portion as compared with the configuration example in FIG. 7, and the hole 18c communicates with the groove 18a.

  FIG. 11 is a diagram illustrating a configuration example of the flange 14a corresponding to the vibration absorber 18 of FIG. 10, FIG. 11 (a) is a perspective view, and FIG. 11 (b) is an AA line of FIG. 11 (a). FIG. When the configuration example of the vibration absorber 18 of FIG. 10 is employed, the flange 14a has a protrusion 14c extending on the surface side (lower surface side) to which the vibration absorber 18 is attached, as shown in the drawing, A hole 14d penetrating from the upper surface side to the tip of the protrusion 14c is formed. A plurality of through holes 18c of the vibration absorber 18 and protrusions 14c of the flange 14a are provided in accordance with the maximum number of vibration absorbers 18 that can be attached.

  By inserting the hole 18c of the vibration absorber 18 into the protrusion 14c of the flange 14a, the vibration absorber 18 is positioned on the flange 14, and the vibration is absorbed by injecting water into the hole 14d from the upper surface side of the flange 14. Water can be supplied to the close contact surface between the body 18 and the floor surface, and the vibration absorber 18 can be easily peeled off.

  Preferably, on the upper surface of the flange 14a, an inner peripheral side wall 14e extending so as to make one round of the flange 14a on the inner peripheral side with respect to the hole 14d, and so as to make one round of the flange 14 on the outer peripheral side with respect to the hole 14d. An outer peripheral side wall portion 14f extending to the top surface of the flange 14a is provided, and water can be prevented from spilling from the upper surface of the flange 14a, and water can be efficiently injected into the hole 14d.

(Second Embodiment)
12A and 12B are diagrams showing a configuration example of a caster device 10A according to the second embodiment of the present invention. FIG. 12A is a side view thereof, and FIG. 12B is a side sectional view thereof. The caster device 10A according to the second embodiment shown in FIG. 12 is different from the caster device 10 according to the first embodiment shown in FIG. That is, the caster device 10A divides the storage body 14 into an inner frame storage body 141 and an outer frame storage body 142, and the outer frame storage body 142 is screwed to the outer peripheral portion of the inner frame storage body 141 so that they can move up and down. It consists of a structure fitted by. Further, in the caster device 10A of the second embodiment, as described later, the inner frame storage body 141 and the outer frame storage body 142 themselves rotate and move up and down, so the caster of the first embodiment The handle 15 used in the apparatus 10 is unnecessary and is not provided.

  The inner frame storage body 141 has a shaft 12 extending therethrough and has an internal space in which the wheel 11 connected to the shaft 12 can be stored. The internal space opens downward. The inner frame storage body 141 is provided at a lower end portion of the shaft 12 or a connecting portion of the wheel 11 connected to the shaft 12 with a slight gap between the downward inner surface and the wheel 11 (or a cover covering the wheel 11). It is attached. The length in the height direction of the inner frame storage body 141 may not be a length that allows the entire wheel 11 to be stored, and may be a length in which a part of the wheel protrudes from the opening. The outer peripheral surface of the inner frame storage body 141 is threaded, and the inner frame storage body 141 is screwed with the inner peripheral surface of the outer frame storage body 142.

  13 is a perspective view showing a configuration example of the inner frame storage body 141 and the outer frame storage body 142, and FIG. 14 is a perspective view showing another configuration example of the inner frame storage body 141. As shown in FIG. As shown in FIGS. 13 and 14, a plurality of ribs 141 a extending in the radial direction are provided on the upper surface (top surface) of the inner frame storage body 141. The rib 141a has a function of reinforcing the strength of the inner frame storage body 141. Further, the inner frame storage body 141 can be easily rotated by hooking a wrench or spanner to the rib 141a. Further, as shown in FIG. 14, a groove 141b into which a tool such as a screwdriver can be inserted may be formed in the rib 141a. The inner frame storage body 141 can be easily rotated by inserting the driver into the groove 141b and rotating the driver.

  The outer frame storage body 142 is a ring-shaped part that fits into the inner frame storage body 141 to form the storage body 14, and an inner peripheral surface thereof is threaded, and an outer peripheral surface of the inner frame storage body 141 Screw together. Further, a ring-shaped flange 14a is formed at the peripheral edge of the lower end side opening of the outer frame housing 142, and the surface (bottom surface) that contacts the floor surface of the flange 14a continuously or intermittently vibrates over the entire circumference. Absorber 18 is stuck.

  As shown in FIG. 13, a plurality of ribs 142 a extending in the radial direction are provided on the surface of the flange 14 a of the outer frame housing 142 (the surface opposite to the surface on which the vibration absorber 18 is attached). The rib 142a has a function of improving the rigidity of the outer frame storage body 142, and further, by gripping the rib 142a, the outer frame storage body 142 can be easily rotated by hand.

  The inner frame storage body 141 and the outer frame storage body 142 are fitted to each other so as to be vertically movable, and the maximum and minimum overlapping states of each other can be variably adjusted. That is, the height of the storage body 14 is variable, and the entire wheel 11 is stored in the internal space of the storage body 14 formed in a state where the overlap between them is the smallest.

  FIGS. 15 and 16 are diagrams for explaining the operation of the caster device 10A. FIG. 15 shows the caster device 10A in which the wheel 11 is grounded to the floor surface, and the flange 14a of the outer frame container 142 is moved from the floor surface. It shows a state in which the office equipment 1 is movable in a separated state. In the movable state, the outer frame storage body 142 is fitted so as to overlap the inner frame storage body 141. FIG. 16 shows a state where the office equipment 1 is fixed in a state where the flange 14a of the outer frame housing body 142 is in contact with the floor surface and the wheels 11 are separated from the floor surface. 15 and 16 also show elements other than the wheel 11 and the shaft 12 as cross sections, as in FIGS. 5 and 6.

  By rotating the inner frame storage body 141 and the outer frame storage body 142 and moving one of them up and down with respect to the other, the height of the inner frame storage body 141 and the outer frame storage body 142 is adjusted, and the overlapping of both By changing the degree, the movable state in FIG. 15 and the fixed state in FIG. 16 can be switched.

  In order to change from the movable state of FIG. 15 to the fixed state of FIG. 15, first, the outer frame container 142 is rotated with respect to the inner frame container 141 so that the outer frame container 142 moves downward, The outer frame storage body 142 is lowered until the vibration absorber 18 of the flange 14a of the outer frame storage body 142 contacts the floor surface. The operator can easily rotate the outer frame storage body 142 by hand by grasping the rib 142a of the outer frame storage body 142.

  After the flange 14a contacts the floor surface, this time, the inner frame storage body 141 is rotated with respect to the outer frame storage body 142 so that the inner frame storage body 141 moves upward, and the wheel 11 is moved from the floor surface. The inner frame storage body 141 is raised until it floats and leaves. The operator can easily rotate the inner frame storage body 141 by hooking a wrench or a spanner on the rib 141a of the inner frame storage body 141. As a result, the flange 14a is grounded to the floor surface and the wheel 11 is separated from the floor surface, so that the load of the office equipment 1 is the vibration of the flange 14a of the outer frame housing body 142 via the shaft 12 and the inner frame housing body 141. Receiving with the absorber 18, the office equipment 1 will be in the state fixed to the floor surface.

  Conversely, when changing from the fixed state of FIG. 16 to the movable state of FIG. 15, first, the inner frame container 141 is moved relative to the outer frame container 142 so that the inner frame container 141 moves downward. The inner frame storage body 141 is lowered until the wheels 11 are in contact with the floor surface. After the wheel 11 touches the floor, this time, the outer frame spring body 142 is rotated with respect to the inner frame container 141 so that the outer frame container 142 moves upward, and the outer frame container 142 The outer frame storage body 142 is raised until the vibration absorber 18 of the flange 14a is separated from the floor surface. Preferably, the outer frame container 142 is raised to the extent that the inner frame container 141 and the outer frame container 142 overlap. Thereby, the vibration absorber 18 is separated from the floor surface, and the load of the office equipment 1 is applied to the wheel 11 in contact with the floor surface via the shaft 12, so that the office equipment 1 can move on the floor surface. Become.

  As described above, the caster device 10A according to the second embodiment rotates the inner frame storage body 141 and the outer frame storage body 142 that are screwed together (fitted) by the screw mechanism to thereby rotate the inner frame storage body 141. And the outer frame housing body 142 are made variable in height, and by changing the height, the movable state in which the wheels 11 are grounded to the floor surface and the vibration absorber 18 in grounding are fixed. Switch between states.

  In addition, by switching the movable state and the fixed state by changing the height of the entire storage body 14, the vibration absorber 18 can be switched without changing the upper end position of the storage body 14 in switching from the fixed state to the movable state. Can be separated from the floor surface. That is, the height for holding the storage body 14 raised is not required, and the shaft 12 can be shortened accordingly (in the configuration of the caster device 10 of the first embodiment, the shaft 12 Need to consider the length for raising the storage body 14).

  Further, since the caster device 10A according to the second embodiment does not require the handle 15 that is used in the caster device 10 according to the first embodiment and is screwed into the shaft 12, the height of the handle 15 is also equal to the shaft. 12 can be shortened.

  The office equipment 1 is designed so that the height of the operation panel is ergonomically appropriate based on the height of a standard caster device attached thereto. As described above, the caster device in the first and second embodiments is a caster device including an adjuster mechanism that moves the storage body 14 up and down, and in particular, in the first embodiment, the adjuster mechanism. There may be a need to ensure an additional length for the shaft 12 as compared to standard caster devices that do not. On the other hand, in the second embodiment, it is possible to mount the adjuster mechanism without requiring an additional length of the shaft 12. Therefore, even if the caster device according to the second embodiment is attached instead of the standard caster device, the height of the operation surface of the office equipment 1 is not increased, and the same operation surface height as the original height can be maintained. .

  Moreover, the modification regarding the vibration absorber 18 demonstrated in 1st Embodiment, ie, the shape of the vibration absorber 18 is standardized, and the number of the vibration absorbers 18 attached to a flange according to the load of an apparatus is adjusted. Configuration, a configuration in which a cross groove is formed on a surface facing the floor surface of the vibration absorber 18, a configuration in which the cross groove is formed and a hole penetrating in the thickness direction is formed in the central portion of the vibration absorber 18, The configuration of the flange 14a having a projection and a through hole into which the hole of the central portion of the vibration absorber 18 is inserted, and the configuration in which a wall is formed so as to sandwich the through hole on the upper surface of the flange 14a are also the second embodiment. Needless to say, the flange can be applied to the flange 14a of the outer frame housing 142.

  The present invention is not limited to the above-described embodiment, and there are design changes within a range that does not depart from the gist including various modifications and corrections that can be conceived by those having ordinary knowledge in the field of the present invention. Of course, it is included in the present invention.

  1: Equipment, 10: Caster device, 10A: Caster device 11: Wheel, 12: Shaft, 13: C ring, 14: Storage body, 14a: Flange, 14c: Projection, 14d: Through hole, 14e: Inner peripheral side wall 14f: outer peripheral side wall, 15: handle, 15a: C-ring locking groove, 16: first lock nut, 17: second lock nut, 18: vibration absorber, 18a: (cross) groove, 18b: Protrusion, 18c: hole, 141: inner frame housing, 141a: rib, 142: outer frame housing, 142a: rib

Claims (9)

In the caster device attached to the equipment,
Wheels,
A member extending in a vertical direction, a lower end coupled to the wheel and an upper end coupled to the device;
A storage body through which the shaft penetrates, is attached to the shaft so as to be movable up and down, and is capable of storing the wheel from an opening opened downward;
A vibration absorber attached to the periphery of the opening of the storage body so as to face the floor surface;
The surface facing the floor of the vibration absorber is provided with at least two intersecting grooves,
The storage body is moved downward with respect to the shaft, the wheel is separated from the floor surface and stored in the storage body, and the vibration absorber is in contact with the floor surface so that the storage body is the device. Support
The housing is moved upward with respect to the shaft, the vibration absorber is separated from the floor, the wheel is exposed from the housing, and the wheel is in contact with the floor, so that the wheel A caster device characterized in that the device is movably supported. In claim 1,
The shaft is formed with a male screw part,
A position adjusting member threadably engaged with the shaft and connected to the housing;
The caster device according to claim 1, wherein the storage body moves up and down without rotating with respect to the shaft as the position adjusting member moves up and down with respect to the shaft. In claim 1 or 2,
A caster device, wherein a peripheral portion of the opening of the storage body forms a flange, and the vibration absorber is attached to a surface of the flange opposite to the floor surface. In claim 3,
A plurality of the vibration absorbers having the same shape are disposed and adhered to the surface facing the floor surface of the flange at equal intervals,
The caster device, wherein the number of the vibration absorbers is determined according to the weight of the device. In claim 3,
The vibration absorber has a hole penetrating in the thickness direction and communicating with the groove;
The caster device, wherein the flange is formed with a hole penetrating in the thickness direction and communicating with the hole of the vibration absorber. In the caster device attached to the equipment,
Wheels,
A member extending in a vertical direction, a lower end coupled to the wheel and an upper end coupled to the device;
An inner frame container that can be accommodated from an opening that is penetrated by the shaft, is attached to the shaft so as to be movable up and down, and opens downward;
A ring-shaped outer frame container that fits to the outer periphery of the inner frame container so as to be movable up and down with respect to the inner frame container;
A vibration absorber attached to the peripheral edge of the lower end opening of the outer frame storage body so as to face the floor surface;
The surface facing the floor of the vibration absorber is provided with at least two intersecting grooves,
The outer frame container is moved downward with respect to the inner frame container in a state where the wheels are in contact with the floor surface to ground the vibration absorber to the floor surface, and the vibration absorber is grounded to the floor surface The inner frame storage body and the outer frame storage body support the device by moving the inner frame storage body upward with respect to the outer frame storage body in a state where the wheels are moved away from the floor surface. ,
The inner frame storage body is moved downward relative to the outer frame storage body in a state where the vibration absorber is grounded to the floor surface, the wheel is grounded to the floor surface, and the wheel is in a state of being grounded to the floor surface. A caster device, wherein the wheel supports the device movably by moving the outer frame container upward with respect to the inner frame container to separate the vibration absorber from the floor surface. . In claim 6,
A caster device, wherein a peripheral edge portion of an opening of the outer frame storage body forms a flange, and the vibration absorber is attached to a surface of the flange opposite to a floor surface. In claim 7,
A plurality of the vibration absorbers having the same shape are disposed and adhered to the surface facing the floor surface of the flange at equal intervals,
The caster device, wherein the number of the vibration absorbers is determined according to the weight of the device. In claim 7,
The vibration absorber has a hole penetrating in the thickness direction and communicating with the groove;
The caster device, wherein the flange is formed with a hole penetrating in the thickness direction and communicating with the hole of the vibration absorber.

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