JP2018011724A - Folding table - Google Patents

Abstract

[Problem] To provide a technology for a folding table that can stably support a top plate while ensuring a wide space for the lower legs. [Solution] The folding table includes a top plate and left and right legs that support the top plate, and the top plate can be rotated to switch between a horizontal position and an upright position. The folding table further includes bearing members fixed to both ends of the underside of the top plate, support members provided on the left and right legs, and a support shaft that connects the support members together. The bearing members have a substantially U-shaped cross section with a pair of side plates hanging down from both sides of a fixed plate fixed to the top plate, and one of the support members and the outer side plate of the bearing member is formed with a pivot shaft portion that is formed coaxially with the support shaft and supports the bearing member rotatably relative to the support member, and the inner side plate of the bearing member is formed with a support shaft hole that is fitted onto the support shaft to support the bearing member rotatably relative to the support shaft. [Selected Figure] Figure 8

Description

  The present invention relates to a folding table.

  Conventionally, there has been a foldable table that rotatably connects both sides of the lower surface of the top plate to the upper ends of the left and right legs, and fixes the top plate to a substantially horizontal use posture and an upright posture rotated upward. Widely used. It is widely known that brackets attached to the lower surfaces of both sides of the top plate are rotatably connected to the upper ends of the legs, and a lock mechanism is provided in the bracket for maintaining the horizontal position and the standing posture of the top plate. ing.

  In general, a beam material for connecting left and right legs is horizontally mounted on a folding table in order to maintain rigidity against a load. In recent years, a foldable table having a structure in which a beam material is arranged close to the lower surface of the top plate has been provided in order to widen the leg space. For example, Patent Document 1 discloses a foldable table in which a rotating shaft (support shaft) of a top plate is disposed in the vicinity of the same axis of a beam material (support member) in order to expand the lower limb space as much as possible. .

Japanese Patent No. 5635836

  The foldable table disclosed in Patent Document 1 includes a top plate that is rotatably attached to a leg portion, a hinge fitting that is attached to the upper end of the leg portion, and a support member (beam material) that is coupled to the hinge fitting. Provided in the vicinity of the left and right ends of the top plate, and provided on the top plate bracket (latch frame) that supports the top plate and the hinge bracket, and supports the top plate bracket so that it can rotate freely. And a support shaft (rotation shaft) that is rotatably supported by the hinge fitting. In the folding table described in Patent Document 1, the support shaft is provided within the range of the cross section of the support member, and the support structure of the top plate bracket and the hinge bracket is such that the rotatable support is supported by the support shaft. It is a one-sided cantilever system.

  According to the foldable table described in Patent Document 1, since the support shaft serving as the rotation shaft of the top plate is provided within the range of the cross section of the support member, a wide leg space can be secured. However, the folding table described in the same document adopts a cantilever system in which the top plate bracket to which the top plate is fixed is supported by only one portion of the hinge bracket. It is difficult to ensure. As a result, the top plate bracket may be twisted or bent due to the load on the top plate or the like, and the top plate may not be stably supported.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a technique capable of stably supporting a top plate in a foldable table.

In order to solve the above problems, the present invention employs the following means. That is, the foldable table according to the present invention includes a top plate and left and right legs that support the top plate, and by rotating the top plate, the posture of the top plate is changed between a horizontal posture and a standing posture. A foldable table that can be switched to, a bearing member that is fixed to both ends of the lower surface of the top plate, a support member that is provided on the left and right legs, and a support shaft that connects the support members, The bearing member further comprises:
A pair of side plates hanging from both sides of the fixed plate fixed to the top plate has a substantially U-shaped cross section, and either the support member or the outer side plate of the bearing member includes the support shaft. A rotation shaft portion that is coaxially formed and rotatably supports the bearing member with respect to the support member is formed, and an inner side plate of the bearing member is externally fitted to the support shaft to A shaft hole that supports the bearing member so as to be rotatable with respect to the shaft is formed.

  According to the folding table of the present invention, the support shaft that connects the left and right legs via the support member and the rotation shaft portion that serves as the rotation shaft of the bearing member to which the top plate is fixed are provided coaxially. In addition, since the bearing member is rotatably supported by the rotation shaft portion and the support shaft, the rigidity of the bearing member can be further increased. Therefore, according to this invention, it becomes possible to support a top plate more stably than before.

  In the present invention, the bearing member further includes a notch formed in a side plate inside the bearing member, and a fitting member that can be fitted into the notch, and the support shaft hole includes the fitting. It may be formed on the landing member. According to this, when assembling the folding table according to the present invention, the support shaft can be attached to the bearing member from the direction in which the U-shaped notch is opened. Therefore, according to the present invention, the folding table can be easily assembled.

  Further, according to the present invention, the horizontal posture and the standing posture of the top plate are housed in a housing space formed between the pair of side plates of the bearing member and supported by the bearing member. The latch portion and the latch receiving portion provided on the support member are engaged to be maintained, and the support member is disposed adjacent to the latch receiving portion so that the user contacts the latch receiving portion. The contact suppression member which suppresses that may be provided. According to this, since it becomes difficult for a user's finger etc. to contact a latch receiving part, when a top plate rotates, it can suppress that a user's finger etc. are caught in a folding table.

  Moreover, this invention is further equipped with the cover member which covers the said accommodation space by connecting the edge parts of the said pair of side plate of the said bearing member, and the said cover member is a surface facing the inside of the said accommodation space. A protrusion is provided on the back surface of the cover, and the protrusion is formed in the housing space through a gap between the cover member and the contact suppressing member in a process in which the top plate rotates between the horizontal posture and the standing posture. It may be formed so as to prevent the user's finger from entering the inside. According to the present invention, the user's finger or the like can be prevented from entering the inside of the bearing member through the gap between the cover member and the contact suppressing member, and therefore the user's finger or the like is folded when the top plate is rotated. It is possible to further suppress being caught in the expression table.

  Further, according to the present invention, the latch portion can be switched between engagement with and release from the latch receiving portion by rotating relative to the latch receiving portion. Is formed with a pair of guide walls standing toward the housing space, and the pair of guide walls receives a part of the latch portion in a gap between the guide walls to rotate the latch portion. You may guide. By doing so, it is possible to suppress the displacement of the latch portion in the rotation axis direction.

  In the present invention, at least one of the pair of guide walls may be formed by the protrusion.

  According to the present invention, the top plate can be more stably supported in the folding table.

In the foldable table which concerns on this embodiment, it is a whole perspective view when a top plate exists in a horizontal attitude | position. In the foldable table which concerns on this embodiment, it is a side view when a top plate exists in a horizontal attitude | position. In the folding table which concerns on this embodiment, it is a side view when a top plate exists in a standing posture. In the folding table which concerns on this embodiment, it is the elements on larger scale when a top plate exists in a standing posture. It is a partial exploded view of the folding type table concerning this embodiment. It is a partial exploded view of the folding type table concerning this embodiment. It is a partial exploded view of the folding type table concerning this embodiment. It is a fragmentary sectional view of the folding type table concerning this embodiment. It is a figure which shows the latch frame of the foldable table which concerns on this embodiment. It is a figure which shows the contact suppression spacer of the foldable table which concerns on this embodiment. It is a figure which shows the frame cover of the foldable table which concerns on this embodiment. It is a figure which shows the relationship between the latch frame and frame cover of the foldable table which concerns on this embodiment. In the folding table which concerns on this embodiment, it is explanatory drawing when a top plate exists in a horizontal attitude | position. In the folding table which concerns on this embodiment, it is explanatory drawing when a top plate exists in a horizontal attitude | position. In the folding table which concerns on this embodiment, it is explanatory drawing when a top plate exists between a horizontal posture and a standing posture. In the folding table which concerns on this embodiment, it is explanatory drawing when a top plate exists in a standing posture.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings. However, the embodiments described below are exemplifications for carrying out the present invention, and the dimensions, materials, shapes, relative arrangements, and the like of the constituent elements described in the present embodiments are not specifically described. As long as the technical scope of the invention is not limited to these, it is not intended. 1 is an overall perspective view of the folding table of the present embodiment when the top plate is in a horizontal position, FIG. 2 is a side view when the top plate is in a horizontal position, and FIG. 3 is a side view when the top plate is in a standing posture. FIG.

  As shown in FIG. 1, the folding table 100 of the present embodiment includes a top plate 20, left and right legs 30, 30 that support the top board 20, and a beam 40 that connects the left and right legs 30, 30; Rotating mechanisms 10 and 10 that are fixed to both ends of the lower surface of the top plate 20 and that connect the top plate 20 so as to be rotatable around the beam 40; lever mechanisms 50 and 50 that connect the turning mechanisms 10 and 10; 20 and a leg plate 30, 30 and a curtain plate 60 disposed substantially vertically below the top plate 20 and a shelf 70 fixed to the lower surface of the top plate 20. In the present specification, the direction in which the legs 30 and 30 are located with respect to the curtain plate 60 is defined as the “front” direction, and the area surrounded by the top plate 20 and the legs 30 and 30 is defined as the “inside”.

  In the foldable table 100 according to this embodiment, the top plate 20 has a substantially horizontal use posture (horizontal posture) as shown in FIG. 2 and the front portion of the top plate 20 as shown in FIG. It can be changed to a folded posture (standing posture). In addition, the curtain plate 60 is linked to be linked to the top plate 20, and when the posture of the top plate 20 is switched, the use posture and the both legs 30 that hang down close to the bottom of the top plate 20. , 30 so as to be movable between the folding postures along the front edge. The folding table 100 can be stacked back and forth by placing the top board 20 in an upright posture.

  The top plate 20 is locked (maintained) in each posture by the rotation mechanism 10 in a horizontal posture or a standing posture. The user releases one of the operation levers 501 and 501 exposed from the lever mechanisms 50 and 50 in a direction approaching the top plate 20 to release the lock of the rotating mechanism 10, and the top plate 20 is in a horizontal posture and a standing posture. And can be rotated and displaced. The folding table 100 is locked by the rotation mechanism 10 when the top plate 20 reaches a horizontal posture or a standing posture.

  The legs 30, 30 are members that support the top plate 20 via the rotation mechanism 10. As shown in FIGS. 2 and 3, the leg 30 has a substantially inverted Y shape in a side view. The leg 30 includes a support leg 301 connected to the beam 40 and grounding legs 302 and 302 that extend in two different directions from the end of the support leg 301 and come into contact with the ground. A plurality of screw holes for connecting the rotation mechanism 10 and the curtain plate 60 are provided on the surface of the support leg 301 located on the inner side of the folding table 100 (see FIG. 5). In addition, a caster 303 for smoothly moving the foldable table 100 is provided at the end of the grounding leg 302. In addition, the structure of the leg 30 in this invention is not specifically limited, It can change suitably.

  4 is a partial perspective view when the folding table 100 according to the present embodiment is in a standing posture, FIGS. 5 to 7 are partially exploded views of the folding table 100, and FIG. 8 is a cross-sectional view taken along line AA shown in FIG. 2 is a partial cross-sectional view of the folding table 100. FIG. Hereinafter, the beam 40, the rotation mechanism 10, and the lever mechanism 50 of the foldable table 100 according to the present embodiment will be described with reference to the drawings.

  The beam 40 is a member that increases the rigidity of the foldable table 100 by connecting the legs 30, 30 to each other and serves as a rotation axis of the top plate 20. The beam 40 is a steel pipe formed of a steel-based material, and has a cylindrical shape with an open end as shown in FIG. Further, as shown in FIG. 1, the beam 40 connects the left and right legs 30, 30 via the rotation mechanism 10. Since the beam 40 functions as a beam member by connecting the left and right legs 30, 30 via the rotation mechanism 10, the rigidity of the folding table 100 as a structure can be ensured. Moreover, although mentioned later for details, the beam 40 is also provided with the function as a rotating shaft of the top plate 20. FIG. Therefore, the foldable table 100 according to the present embodiment can ensure a wider lower limb space as compared with the conventional foldable table. The beam 40 corresponds to the “support shaft” in the present invention.

  Next, the rotation mechanism 10 will be described. The rotation mechanism 10 is a mechanism that connects the top plate 20 to the leg 30 so as to be rotatable, and has a function of locking the posture of the top plate 20 to a horizontal posture or a standing posture. As shown in FIG. 4, the rotation mechanism 10 according to this embodiment includes a shaft pin 1, a latch 2, a latch plate 3, a latch frame 4, a frame cover 5, a plate reinforcing member 6, and a contact suppression spacer 7. The rotation mechanism 10 locks the posture of the top plate 20 in a horizontal posture or a standing posture by engaging the latch 2 with the latch plate 3.

The latch plate 3 is a member that locks the posture of the top plate 20 by locking the latch 2. The latch plate 3 has a function of supporting the latch frame 4 via the shaft pin 1 and the beam 40 by connecting the shaft pin 1 and the beam 40 so as to be coaxial. As shown in FIG. 5, the latch plate 3 is connected to the upper end portion of the support leg 301 of the leg 30. The latch plate 3 is formed by processing a steel material and has a plate shape as shown in FIG. Further, the latch plate 3 forms a step in a longitudinal sectional view, and is divided into a latch receiving portion 31 and a connection portion 32 that are parallel to each other with the step as a boundary. The step between the latch receiving portion 31 and the connecting portion 32 is connected by the inclined portion 33. In addition, as shown in FIG. 8, the latch plate 3 has a surface 3 </ b> A located in the inward direction and a surface 3 </ b> B located in the outward direction in the foldable table 100. Here, the areas of the latch receiving portions 31 on the surfaces 3A and 3B are referred to as surfaces 31A and 31B, the regions of the connection portion 32 are referred to as surfaces 32A and 32B, and the regions of the inclined portion 33 are referred to as surfaces 33A and 33B, respectively. The surface 32B protrudes from the surface 31B in the direction perpendicular to the surface 31B. Further, as shown in FIG. 7, a first engagement notch 311 and a second engagement notch 312 that are portions that engage with the latch 2 are formed on the periphery of the latch receiving portion 31. The first engagement notch 311 locks the latch 2 when the top plate 20 is in the horizontal posture, and the second engagement notch 312 locks the latch 2 when the top plate 20 is in the standing posture. . In the foldable table 100, the second engagement notch 312 is located at the upper end of the latch receiving portion 31, and the first engagement notch 311 is formed at the side end before the latch receiving portion 31. Further, the latch receiving portion 31 is formed with a connection hole 313 through which the shaft pin 1 is inserted.

  As shown in FIG. 8, in the foldable table 100, one end of the beam 40 is connected to the surface 31A of the latch plate 3 perpendicularly to the surface 31A. At this time, the central axis of the beam 40 is coaxial with the central axis of the connection hole 313 and the axial pin 1. Then, as shown in FIG. 5, the latch plate 3 is connected to the inner side surface of the support leg 301 by screwing. That is, the latch plates 3 and 3 are connected to both ends of the beam 40, and the legs 30 and 30 are connected to the latch plates 3 and 3, respectively. By doing so, the left and right legs 30, 30 are connected by the beam 40, and the rigidity of the foldable table 100 as a structure is ensured. The latch plate 3 corresponds to a “support member” in the present invention.

  The shaft pin 1 is a member that serves as a rotating shaft of the top plate 20 together with the beam 40. As shown in FIGS. 7 and 8, the shaft pin 1 is provided in the latch receiving portion 31 of the latch plate 3. The shaft pin 1 is formed in a cylindrical shape from a steel-based material and has a different diameter in the axial direction. Further, the shaft pin 1 has a rotating shaft portion 11 having an outer diameter dimension that can be inserted into a connection hole 313 provided in the latch plate 3, and a large diameter portion 12 having an outer diameter dimension larger than that of the connection hole 313. Is formed. Further, the outer diameter of the large diameter portion 12 is smaller than the outer diameter of the beam 40. As shown in FIG. 8, the shaft pin 1 is inserted through the rotation shaft portion 11 from the surface 31A of the latch receiving portion 31 of the latch plate 3, and the end surface of the large diameter portion 12 is in contact with the surface 31A and the rotation shaft portion. 11 is welded to the latch plate 3 in a state of vertically protruding from the surface 31B (see FIGS. 4 and 6). As shown in FIG. 8, in the foldable table 100, the central axis of the shaft pin 1 and the central axis of the beam 40 are coaxial. That is, the shaft pin 1 is provided so as to be coaxial with the beam 40 with the latch plate 3 sandwiched between both ends of the beam 40. As shown in FIGS. 4 and 8, the latch frame 4 is rotatably fitted to the rotation shaft portion 11. Note that the axis that is the central axis of the shaft pin 1 and the beam 40 in the foldable table 100 and that is the rotation center of the top plate 20 and the latch frame 4 is referred to as a rotation axis A1.

  The plate reinforcing member 6 is a member for suppressing the bending of the latch plate 3 and the beam 40 by being attached to the latch plate 3 and contacting the beam 40. The plate reinforcing member 6 is formed by processing a steel-based material, and extends perpendicularly to the surface of the base portion 6A from both ends of the base portion 6A and the short side direction of the base portion 6A as shown in FIG. Side walls 6B, 6B. The plate reinforcing member 6 has a symmetrical shape in the short direction of the base portion 6A. As shown in FIG. 5, the plate reinforcing member 6 is attached so that the front ends of the side walls 6 </ b> B and 6 </ b> B abut against the latch plate 3 in the foldable table 100.

As shown in FIG. 7, the side wall 6 </ b> B of the plate reinforcing member 6 has a shape with a step at the tip so that it can come into contact with the surfaces 31 </ b> A, 32 </ b> A, 33 </ b> A of the latch plate 3 without a gap. Furthermore, an arcuate arc notch 61 is formed at one end in the longitudinal direction of the base portion 6 </ b> A, and the diameter of the arc notch 61 is substantially equal to the outer diameter of the beam 40. The plate reinforcing member 6 pivotally supports the beam 40 by the arc notch 61 and the side wall portion 6 </ b> B coming into contact with the beam 40. Side wall 6
The height dimension of B from the base portion 6A is designed to be a predetermined height or more so that the beam 40 can be suitably supported. Moreover, the attachment slit 62 for attaching the contact suppression spacer 7 has penetrated the side wall part 6B.

  The latch 2 is a member that locks the posture of the top plate 20 in a horizontal posture or a standing posture by engaging with the latch plate 3. As shown in FIG. 4, the latch 2 is connected to the top plate 20 via the latch frame 4. The latch 2 is formed by processing a steel material. Further, as shown in FIG. 6, an engaging claw 21 is formed at one end in the longitudinal direction of the latch 2 so as to bend in the lateral direction. The engagement claw 21 has a shape that can be engaged with the first engagement notch 311 and the second engagement notch 312 of the latch plate 3. In the vicinity of the other end of the latch 2, a long hole 22 formed in a substantially oval shape penetrates the latch 2 in the thickness direction. The latch 2 corresponds to a “latch portion” in the present invention.

  Next, the latch frame 4 will be described. As shown in FIG. 4, the latch frame 4 is fixed to the top plate 20 and is rotatably attached to the beam 40 and the rotation shaft portion 11 of the shaft pin 1, so that the top plate around the rotation axis A <b> 1. This is a member that realizes 20 rotations. FIG. 9A shows the entire latch frame 4, and FIG. 9B shows a state in which the sliding ring 45 of the latch frame 4 is expanded. The latch frame 4 is formed by processing a steel material. As shown in FIG. 9A, the latch frame 4 is fixed to the top plate 20 from a substantially rectangular fixed plate 4A and from both ends along the longitudinal direction of the fixed plate 4A. It has a first side plate 41 and a second side plate 42 extending perpendicularly to the fixed plate 4A. The first side plate 41 and the second side plate 42 have the same outer shape in plan view, and both are substantially trapezoidal. As shown in FIG. 8, the latch frame 4 is formed in a substantially U shape in a cross-sectional view, and is arranged so that the first side plate 41 is positioned inside the second side plate 42 in the foldable table 100. Here, a space defined between the first side plate 41 and the second side plate 42 is referred to as an accommodation space S. As illustrated in FIG. 4, the latch 2, the latch plate 3, the plate reinforcing member 6, and the contact suppression spacer 7 are accommodated in the accommodation space S. The distance between the first side plate 41 and the second side plate 42, that is, the width of the fixed plate 4 </ b> A is sufficient to accommodate the above members in the accommodation space S.

  Further, as shown in FIG. 9A, the first side plate 41 and the second side plate 42 are formed so that the width gradually decreases from the middle to the side end in the longitudinal direction of the fixed plate 4A. The front end sides 41A and 42A are parallel to the end sides of the fixed plate 4A and the oblique sides 41B and 42B. The oblique sides 41B and 42B are formed so as to be positioned in front of the front end sides 41A and 42A when the top plate 20 is in a horizontal posture. A shaft pin hole 44 that penetrates through the second side plate 42 is formed near the center of the second side plate 42 between the base end and the tip side 42A. The diameter of the shaft pin hole 44 is such that the rotation shaft portion 11 of the shaft pin 1 can be inserted and the shaft pin hole 44 can slide around the rotation shaft portion 11. Further, a U-shaped U-shaped notch 43 extending to the vicinity of the proximal end of the first side plate 41 is formed at the distal end side 41A. A sliding ring 45 into which the beam 40 is slidably inserted is fitted into the U-shaped notch 43.

The sliding ring 45 is formed of a resin material, and is fitted into the U-shaped notch 43 and slides around the beam 40 as shown in FIG. It is a member that allows rotation. A beam hole 451 having a diameter through which the beam 40 can be inserted is formed in the sliding ring 45. That is, the sliding ring 45 can slide on the inner wall of the beam hole 451 with respect to the side surface of the beam 40. The beam hole 451 is formed so that the central axis is coaxial with the central axis of the shaft pin hole 44 when the sliding ring 45 is fitted into the U-shaped notch 43. The latch frame 4 can be pivotably mounted around the rotation axis A1 by matching the central axes of the beam hole 451 and the shaft pin hole 44. Further, in order to allow the sliding ring 45 to be fitted into the U-shaped notch 43, a U-shaped U-shaped edge 452 having the same shape as the inner edge of the U-shaped notched 43 in plan view, and a U-shaped edge 452 An outer shape is formed by a straight edge 453 connecting the ends. Near the center of the straight edge 453, a slit 454 reaching the beam hole 451 is formed. As shown in FIG. 9B, the sliding ring 45 can be in a half-split state with the hinge portion 455 formed near the center of the U-shaped edge 452 as a fulcrum by expanding the slit 454. .

  9A, the first side plate 41 and the second side plate 42 of the latch frame 4 are provided with mounting holes 46 and 46 for mounting the frame cover 5, respectively. The first side plate 41 and the second side plate 42 are provided with lever through holes 47 and 47 for connecting the operation lever 501 of the lever mechanism 50 to the latch frame 4 so as to be rotatable. The latch frame 4 corresponds to a “bearing member” in the present invention, the sliding ring 45 corresponds to a “fitting member”, and the beam hole 451 corresponds to a “support shaft hole”.

  As shown in FIGS. 4 and 7, the contact suppression spacer 7 is a member provided on the latch plate 3 via the plate reinforcing member 6. The contact suppression spacer 7 is provided so as to be adjacent to the latch receiving portion 31 of the latch plate 3, thereby suppressing contact of a user's finger or the like with the latch plate 3. FIG. 10 is a view showing the contact suppression spacer 7. The contact suppression spacer 7 is formed by processing a resin material. As shown in FIGS. 10A and 10B, the contact suppression spacer 7 extends perpendicularly to the surface of the support plate 71 from the support plate 71 serving as a base and the peripheral edges of both surfaces of the support plate 71. An edge plate 72 and a partition plate 73 that divides a region surrounded by the edge plate 72 are provided. The edge plate 72 has a contact suppression surface 721 shown in FIG. In the foldable table 100, the contact suppression spacer 7 is provided inside the accommodation space S, and is arranged such that the support plate 71 is parallel to the latch plate 3 and the contact suppression surface 721 is positioned in front.

  The contact suppression surface 721 is formed as a curved surface, and has a dome shape in a side view so as not to contact the frame cover 5 when the top plate 20 rotates. Further, as shown in FIG. 4, the contact suppressing surface 721 is formed so as to be adjacent to the latch receiving portion 31 and protrude toward the front of the latch receiving portion 31 in the foldable table 100. As a result, the user's finger is prevented from coming into contact with the latch receiving portion 31. Further, as shown in FIG. 10B, the surface of the contact suppression spacer 7 that faces the plate reinforcing member 6 is in contact with the mounting piece 74 that engages with the mounting slit 62 of the plate reinforcing member 6 and the beam 40. Thus, a beam abutting piece 75 cut out in an arc shape is provided. The contact suppression spacer 7 corresponds to the “contact suppression member” in the present invention.

  As shown in FIG. 6, the frame cover 5 is a member that covers the accommodation space S by connecting the ends of the first side plate 41 and the second side plate 42 of the latch frame 4. That is, the frame cover 5 rotates with the top plate 20 about the rotation axis A1. The frame cover 5 is formed of a resin material and has a band shape that is bent halfway. Since the frame cover 5 has a symmetrical shape in the lateral direction, a common shape can be used for the rotation mechanisms 10 and 10 at both ends of the folding table 100.

FIG. 11A is a diagram showing the frame cover 5, and FIG. 11B is a diagram showing the positional relationship between the frame cover 5 and the latch 2 in the foldable table 100. As shown in FIG. 11A, the frame cover 5 includes a first cover portion 5A that contacts the first side plate 41 of the latch frame 4 and the front end sides 41A and 42A of the second side plate 42, with the bent portion as a boundary. The second cover portion 5B is in contact with the oblique sides 41B and 42B. The length of the first cover portion 5 </ b> A in the longitudinal direction is shorter than the lengths of the front end sides 41 </ b> A and 42 </ b> A of the latch frame 4. Further, on the surface of the frame cover 5 that is located on the inner side when the latch cover 4 is mounted, that is, the surface facing the accommodation space S (hereinafter referred to as “cover back surface”), the rigidity of the frame cover 5 is increased. Ribs 51 are formed. The rib 51 has vertical ribs 51a and 51a formed in the vicinity of both side ends of the frame cover 5 along the longitudinal direction, and a plurality of horizontal ribs 51b orthogonal to the vertical ribs 51a and 51a. Each of the vertical ribs 51a and the horizontal ribs 51b protrudes perpendicularly to the cover back surface of the first cover portion 5A. The vertical ribs 51a and 51a are formed with mounting claws 52 and 52 for fixing the frame cover 5 to the latch frame 4 by engaging with the mounting holes 46 and 46 of the latch frame 4, respectively.

  Further, a protrusion 53 is formed on the back surface of the first cover portion 5A. Although details will be described later, the protrusion 53 is provided to prevent the user's finger from coming into contact with the inside of the rotation mechanism 10 and to suppress the displacement of the latch 2 in the axial direction. The protrusions 53 have a triangular shape in a side view and are arranged so as to be parallel to the longitudinal ribs 51a and at equal intervals, and are arranged so as to be parallel to the lateral ribs 51b and a plurality of triangles. Reinforcing ribs 532 that reinforce the triangular ribs 531 by connecting the ribs 531 are provided. The triangular rib 531 has a slope 531a that is continuous with the tip of the first cover portion 5A. The frame cover 5 has a predetermined gap between the inclined surface 531a and the contact suppression surface 721 of the contact suppression spacer 7 when the top plate 20 is in the horizontal posture and the standing posture or when rotating between the horizontal posture and the standing posture. It is formed to be less than the size of. Further, the projection 53 is located in the center in the short direction of the frame cover 5. Latch guides 54, 54 having the same width are formed between the triangular ribs 531, 531 and the longitudinal ribs 51 a, 51 a located at both ends of the protrusion 53. Here, the latch guide 54 refers to a space formed between the triangular rib 531 and the vertical rib 51a. As shown in FIG. 11B, the width dimension of the latch guide 54 is slightly larger than the thickness dimension of the latch 2.

  As shown in FIG. 12, in the state in which the frame cover 5 and the latch frame 4 are connected, an opening H that leads from the outside to the inside of the accommodation space S is formed. The opening H is formed so that the frame cover 5 and the latch frame 4 do not interfere with the latch plate 3, the plate reinforcing member 6, and the contact suppression spacer 7 when the top plate 20 rotates between the horizontal posture and the standing posture. (See FIGS. 13A-13D). The frame cover 5 corresponds to a “cover member” in the present invention, and the protrusion 53 corresponds to a “protrusion”. Further, the triangular rib 531 and the vertical rib 51a correspond to “a pair of guide walls” in the present invention.

  Next, the lever mechanism 50 will be described. As shown in FIG. 1, the lever mechanisms 50 and 50 are provided on both sides of the folding table 100. As shown in FIG. 5, the lever mechanism 50 includes an operation lever 501 that is rotated by the user, and the other lever when the user operates the operation lever 501 provided on the one lever mechanism 50. A link pipe 502 for interlocking the mechanism 50 and a spring member (not shown) for biasing the latch 2 in a direction to engage the latch plate 3 are provided. In the lever mechanisms 50 and 50, the same link pipe 502 is used. As shown in FIG. 5, the operation lever 501 includes an operation unit 501 a held by a user and a connection column 501 b that protrudes vertically from a side surface of the operation unit 501 a. The connection column 501b is formed in a substantially oval shape in cross-sectional view.

As shown in FIG. 6, in the foldable table 100, the connection post 501 b of the operation lever 501 passes through the lever frame 47 and 47 provided in the latch frame 4, thereby penetrating the latch frame 4. At this time, the connection column 501 b passes through the long hole 22 provided in the latch 2 inside the latch frame 4, and the side surface of the connection column 501 b engages with the inner wall of the long hole 22. As a result, the latch 2 is pivotally connected to the latch frame 4. As the operation unit 501a is rotated, the latch 2 can be rotated with the extending direction of the connection column 501b as the rotation axis A2. Further, the link pipe 502 has a rectangular tube shape with both ends opened. One end of the link pipe 502 is inserted with the tip of the connection column 501 b penetrating the latch frame 4, and the side surface of the connection column 501 b is engaged with the inner wall of the link pipe 502. That is, the link pipe 502 rotates in the same direction as the operation unit 501a rotates. The other end of the link pipe 502 is connected to the connection column 501b of the other lever mechanism 50. By doing so, in the foldable table 100, the user can rotate the latches 2 and 2 of the rotating mechanisms 10 and 10 simultaneously and in the same direction only by rotating the one operating lever 501. .

  Next, in the folding table 100 according to the present embodiment, the order in assembling the turning mechanism 10 will be described. First, from the state shown in FIG. 7, the shaft pin 1 is inserted from the connection hole 313 of the latch plate 3, and the shaft pin 1 and the latch plate 3 are welded with the rotating shaft portion 11 protruding from the surface 31 </ b> B. In this state, the latch plate 3 is welded to both ends of the beam 40 so that the central axis of the shaft pin 1 and the central axis of the beam 40 are the same. Next, the plate reinforcing member 6 is welded to the latch plate 3. In this state, the contact suppression spacer 7 is connected to the plate reinforcing member 6. Next, while letting the beam 40 escape to the U-shaped notch 43 of the latch frame 4, the latch plate 3 is accommodated in the accommodating space S in the latch frame 4, and the rotating shaft portion 11 is inserted into the shaft pin hole 44. Then, as shown in FIG. 9B, the sliding ring 45 is expanded from the slit 454 to be in a half-split state, and the sliding ring 45 is attached to the beam 40 so that the beam 40 is inserted into the beam hole 451. . In this state, the sliding ring 45 is fitted into the U-shaped notch 43 of the latch frame 4. In this way, the latch frame 4 is connected to the beam 40 and the rotating shaft portion 11. Then, the fixing plate 4 </ b> A of the latch frame 4 is fixed to the top plate 20 and the lever mechanism 50 is connected to the latch frame 4. In this state, the frame cover 5 is fixed to the latch frame 4 by engaging the mounting claws 52, 52 of the frame cover 5 with the mounting holes 46, 46 of the latch frame 4. Thereby, the rotation mechanism 10 shown in FIG. 4 is assembled.

  In this state, the plate reinforcing member 6 is welded to the latch plate 3 and is welded to the lower side of the beam 40 by the circular arc notch 61 and the side wall portion 6B. Therefore, the bending of the latch plate 3 and the beam 40 is suppressed. In addition, since the opening H is formed in the rotation mechanism 10, a space for rotating the top plate 20 is secured. More specifically, the rotation of the top plate 20 is not hindered by the latch frame 4 or the frame cover 5.

  As described above, the foldable table 100 according to this embodiment is provided so that the rotation shaft portion 11 is coaxial with the beam 40. Therefore, according to the foldable table 100, a wider lower limb space can be ensured as compared with a conventional foldable table in which the beam member and the pivot axis of the top plate are configured by separate members.

  In the foldable table 100 according to the present embodiment, the latch frame 4 fixed to the top plate 20 is attached not only to the rotating shaft portion 11 but also to the beam 40 so as to be rotatable. More specifically, in the latch frame 4, the shaft pin hole 44 formed in the second side plate 42 is rotatably supported by the rotation shaft portion 11 provided coaxially with the beam 40, and the first side plate 41. A beam hole 451 formed on the beam 40 is rotatably supported by the beam 40. In other words, the latch frame 4 is supported at two locations of the rotating shaft portion 11 and the beam 40. Therefore, according to the foldable table 100 according to the present embodiment, the rigidity of the latch frame 4 can be further increased as compared with a conventional foldable table that is a cantilever system that supports the latch frame at one place. It is possible to prevent the latch frame 4 from being twisted or bent. As a result, according to the foldable table 100 according to the present embodiment, the top plate 20 can be supported more stably.

Further, in the folding table 100 according to this embodiment, the beam hole 451 is formed in the sliding ring 45 that can be fitted in the U-shaped notch 43 formed in the first side plate 41 of the latch frame 4. Therefore, when the latch frame 4 is connected to the beam 40, the beam 40 can be released to the U-shaped notch 43, and the latch frame 4 can be easily moved to the beam 40 to which the latch plate 3 and the plate reinforcing member 6 are connected. Can be connected to. Further, after the beam 40 is released to the U-shaped notch 43 and the rotating shaft portion 11 is inserted into the shaft pin hole 44, the sliding ring 4
By fitting the sliding ring 45 into the U-shaped notch 43 with the 5 attached to the beam 40, the latch frame 4 can be connected to the beam 40 and the rotating shaft portion 11. Axis alignment with 451 can be easily performed. Therefore, according to the folding table 100 which concerns on this embodiment, an assembly can be performed more easily than before.

  In addition, an opening H is formed in the rotation mechanism 10 of the folding table 100 in order to secure a space for the latch frame 4 to rotate. Therefore, for example, as shown in FIG. 4, in the standing posture, the opening H is opened at the position of the first engagement notch 311 of the latch plate 3 inside the accommodation space S, and the first engagement notch 311 is the frame cover. 5 is not covered. However, as described above, the folding table 100 according to the present embodiment is provided with the contact suppressing spacer 7 on the latch plate 3 via the plate reinforcing member 6. The contact suppression spacer 7 is disposed adjacent to the latch plate 3 in the accommodation space S. Since the contact suppression surface 721 of the contact suppression spacer 7 projects forward from the latch plate 3, the user's finger or the like is prevented from contacting the latch plate 3 from the opening H. As a result, according to the foldable table 100 according to the present embodiment, it is possible to prevent a user's finger or the like from being unexpectedly caught in the accommodation space S when the top plate 20 is rotated.

  Next, the operation | movement at the time of switching the top plate 20 of the foldable table 100 which concerns on this embodiment from a horizontal attitude | position to a standing attitude | position is demonstrated. 13A to 13D are explanatory diagrams in the process in which the top plate 20 of the foldable table 100 according to the present embodiment reaches a standing posture from a horizontal posture. FIG. 13A is a diagram illustrating a state in which the top board 20 is in a horizontal posture. As shown in FIG. 13A, the rotation direction around the rotation axis A1 of the top plate 20 when the top plate 20 changes from the horizontal posture to the standing posture is the first direction D1 and the direction opposite to the first direction D1. Thus, the rotation direction when the standing posture is changed to the horizontal posture is defined as a second direction D2. In addition, the folding table 100 releases the maintenance of the posture of the top plate 20 by performing an operation of bringing the tip of the operation unit 501a of the operation lever 501 closer to the top plate 20. At this time, the operation lever 501 rotates about the rotation axis A 2, and the latch 2 rotates in the same direction as the operation lever 501, so that the engagement claw 21 is separated from the latch plate 3. In order to release the posture maintenance of the top plate 20, the direction of the operation lever 501 and the latch 2 around the rotation axis A2 is a release direction D3, and a direction opposite to the release direction D3 is an engagement direction D4. In the folding table 100 according to this embodiment, the latch 2 is always urged in the engagement direction D4 by the urging force of the spring member.

  As shown in FIG. 13A, in the horizontal posture state, the latch 2 is locked to the latch plate 3 by the engagement claw 21 of the latch 2 engaging with the first engagement notch 311 of the latch plate 3. . Therefore, the rotation of the top plate 20 in the first direction D1 is restricted. The latch 2 is urged by the spring member in the engagement direction D4 to prevent the engagement of the engagement claw 21 and the first engagement notch 311 from being inadvertently released. As a result, in this state, the top plate 20 is locked in a horizontal posture.

  In order to switch the posture of the top plate 20 from this state to the standing posture, the user operates one of the lever mechanisms 50 and 50 provided at both ends of the folding table 100 to release the lock. There is a need. Since the lever mechanisms 50 and 50 and the rotation mechanisms 10 and 10 are interlocked with each other via the link pipe 502, the lock can be released only by operating one of the lever mechanisms 50. Hereinafter, only the operation of the one lever mechanism 50 and the rotation mechanism 10 will be described, and the other operation is the same operation, and thus description thereof will be omitted.

To release the lock of the top plate 20, the user pushes the tip of the operation portion 501a of the operation lever 501 in a direction to approach the top plate 20, thereby rotating the operation lever 501 in the release direction D3. As a result, the latch 2 also rotates in the release direction D3, so that the engagement claw 21 of the latch 2 moves away from the first engagement notch 311 as shown in FIG. 13B. As a result, the engagement between the engagement claw 21 and the first engagement notch 311 is released, and the horizontal posture of the top plate 20 is released. In this state, the posture of the top board 20 can be switched. That is, the top plate 20 can be rotated to D1.

  In order to switch the posture of the top plate 20 from the horizontal posture to the standing posture with the top plate 20 unlocked, the top plate 20 is rotated in the first direction D1. FIG. 13C is a diagram illustrating a state in which the top plate 20 is rotated in the first direction D1, and FIG. 13D is a diagram illustrating a state in which the top plate 20 is locked in the standing posture. When the user pushes the top plate 20 to rotate the top plate 20 in the first direction D1, the shaft pin hole 44 and the beam hole 451 of the latch frame 4 slide around the rotation shaft portion 11 and the beam 40. By doing so, the top plate 20 rotates in the first direction D1. The top plate 20 is completely upright through the state shown in FIG. 13C. Since the latch 2 is always urged in the engagement direction D4 by the spring member, the latch 2 automatically rotates in the engagement direction D4, and as shown in FIG. 13D, the engagement claw 21 and the second engagement notch 312 Engage. As a result, the rotation of the top plate 20 in the second direction D2 is restricted, and the top plate 20 is locked in the standing posture. By the above operation, the posture of the top board 20 is switched from the horizontal posture to the standing posture.

  In addition, when switching the top plate 20 from the standing posture to the horizontal posture, an operation reverse to the above may be performed. That is, by rotating the operation lever 501 in the release direction D3, the engagement between the engagement claw 21 of the latch 2 and the second engagement notch 312 of the latch plate 3 is released, and the top plate 20 is moved in the second direction D2. Turn to. By doing so, the top plate 20 becomes a horizontal posture. In this state, the operation lever 501 rotates in the engagement direction D4, and the engagement claw 21 of the latch 2 and the first engagement notch 311 of the latch plate 3 engage with each other, so that the top plate 20 is brought into a horizontal posture. Locked.

  Here, in the folding table 100 according to the present embodiment, the inclined surface 531a of the triangular rib 531 forming the projection 53 of the frame cover 5 is formed such that the gap with the contact suppression spacer 7 is always a predetermined size or less. Has been. A point P in the drawings of FIGS. 13A to 13D is a point on the inclined surface 531a, which is the closest point to the rotation axis A1 that is the axis around which the frame cover 5 rotates. In addition, a circle C indicated by a one-dot chain line in the figure indicates a circle centered on the rotation axis A1, and the radius of the circle C is equal to the distance between the rotation axis A1 and the point P. That is, when the top plate 20 rotates between the horizontal posture and the standing posture, the point P moves on the circle C. The folding table 100 is designed such that the distance between the circle C and the contact suppression surface 721 of the contact suppression spacer 7 is equal to or less than a predetermined value. By doing so, the gap between the slope 531a and the contact suppression spacer 7 is kept below a predetermined size regardless of the position of the top plate 20 between the horizontal posture and the standing posture. The predetermined size is a size that can prevent a user's finger or the like from entering the gap.

  That is, the foldable table 100 according to the present embodiment is provided with the projection 53 on the back surface of the frame cover 5, and the projection 53 is rotated when the top plate 20 rotates between the horizontal posture and the standing posture. The user's finger or the like is formed so that it is difficult for the user's finger or the like to enter the interior of the accommodation space S through the gap between the frame cover 5 and the contact suppression spacer 7. Therefore, according to the foldable table 100, it is possible to further suppress the user's finger or the like from being unexpectedly caught in the accommodation space S when the top plate 20 is rotated.

Further, as described above, the latch 2 is also rotated in the release direction D3 or the engagement direction D4 in accordance with the rotation operation of the operation lever 501 for unlocking the posture of the top plate 20 or locking the posture. At this time, the rotation of the latch 2 is guided by a latch guide 54 formed by a triangular rib 531 and a vertical rib 51 a erected from the back surface of the frame cover 5 toward the accommodation space S. More specifically, the latch 2 is received in the gap between the vertical rib 51a and the triangular rib 531 from the axial direction of the rotation axis A2 within the range of rotation. Therefore, according to the foldable table 100 according to the present embodiment, the displacement of the latch 2 in the direction of the rotation axis can be suppressed while guiding the rotation of the latch 2 around the rotation axis A2.

  In the above description, the latch guide 54 is formed by the vertical rib 51a and the protrusion 53, but the present invention is not limited to this. That is, the latch guide 54 may be formed by a pair of guide walls that are erected from the back surface of the frame cover 5 toward the inside of the accommodation space S.

  Further, in the present embodiment, the rotating shaft portion 11 protrudes from the latch plate 3 and the shaft pin hole 44 is formed in the latch frame 4, but the present invention is not limited to this. In other words, the latch frame 4 may be provided with a rotation shaft portion serving as a rotation shaft of the top plate 20, and the latch plate 3 may be provided with a hole for supporting the rotation shaft portion. In the present invention, the latch plate 3 and the leg 30 may be an integral member.

  Moreover, in this embodiment, although the latch plate 3, the plate reinforcement member 6, and the contact suppression spacer 7 were each comprised by the separate member, this invention is not limited to this. That is, the plate reinforcing member 6 and the contact suppression spacer 7 may be configured as an integral member, the latch plate 3 and the plate reinforcing member 6 may be configured as an integral member, You may comprise the plate reinforcement member 6 and the contact suppression spacer 7 with an integral member.

  In this embodiment, the sliding ring 45 and the frame cover 5 are configured as separate members. However, the present invention is not limited to this, and the sliding ring 45 and the frame cover 5 are configured as an integral member. Also good.

  Furthermore, in this embodiment, the latch 2 has a claw for engaging with the latch plate 3, and the latch plate 3 has a notch, but the present invention is not limited to this. That is, the latch 2 may have a notch for engagement, and the latch plate 3 may have a claw for engagement.

  The various contents described above can be combined as much as possible without departing from the technical idea of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Shaft pin 11 ... Turning shaft part 2 ... Latch (latch part)
3 ... Latch plate (support member)
31 ... Latch receiving part 4 ... Latch frame (bearing member)
45 ... Sliding ring (fitting member)
451 ... Beam hole (support shaft hole)
5. Frame cover (cover member)
53 ... Protrusion (protrusion)
54 ... Latch guide 6 ... Plate reinforcement member 7 ... Contact suppression spacer (contact suppression member)
DESCRIPTION OF SYMBOLS 10 ... Turning mechanism 20 ... Top plate 30 ... Leg 40 ... Beam (support axis)
50 ... Lever mechanism 60 ... Curtain plate 70 ... Shelf 100 ... Folding table S ... Storage space

Claims (6)

A folding table that includes a top plate and left and right legs that support the top plate, and is capable of switching the posture of the top plate between a horizontal posture and a standing posture by rotating the top plate,
A bearing member fixed to both ends of the lower surface of the top plate, a support member provided on the left and right legs, and a support shaft connecting the support members;
The bearing member has a substantially U-shaped cross section in which a pair of side plates hang down from both sides of a fixed plate fixed to the top plate,
One of the support member and the outer side plate of the bearing member is provided with a rotation shaft portion that is formed coaxially with the support shaft and supports the bearing member rotatably with respect to the support member. Formed,
A shaft hole that supports the bearing member so as to be rotatable with respect to the support shaft by being fitted on the support shaft is formed in the side plate inside the bearing member.
Folding table. The bearing member further includes a notch formed in a side plate inside the bearing member, and a fitting member that can be fitted into the notch,
The support shaft hole is formed in the fitting member.
The folding table according to claim 1. The horizontal posture and the standing posture of the top plate are housed in a housing space formed between the pair of side plates of the bearing member and are supported by the bearing member, and the support Maintained by engaging a latch receiving portion provided on the member,
The support member is provided with a contact suppressing member that is arranged adjacent to the latch receiving portion to suppress a user from contacting the latch receiving portion.
The folding table according to claim 1 or 2. A cover member that covers the accommodation space by connecting ends of the pair of side plates of the bearing member;
The cover member has a protrusion on the back surface of the cover, which is a surface facing the inside of the housing space,
In the process in which the top plate rotates between the horizontal posture and the standing posture, a user's finger enters the housing space through the gap between the cover member and the contact suppressing member. Formed to suppress the
The folding table according to claim 3. The latch portion can be switched between engagement and release with the latch receiving portion by rotating relative to the latch receiving portion,
On the back surface of the cover member, a pair of guide walls standing toward the housing space is formed,
The pair of guide walls guide rotation of the latch portion by receiving a part of the latch portion in a gap between the guide walls.
The folding table according to claim 4. At least one of the pair of guide walls is formed by the protrusion.
The folding table according to claim 5.

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