JP7490201B2 - shelf - Google Patents

Description

This disclosure relates to a shelf that has multiple supports between shelves spaced apart vertically.

Conventionally, this type of shelf is known in which the fitting shafts at both ends of each support are fitted into a number of fitting holes that open on both the top and bottom surfaces of the shelf board, and the fitting shafts are prevented from slipping out of the fitting holes by the engagement of protrusions on the outer surfaces of each fitting shaft with protrusions on the inner surfaces of the fitting holes (see, for example, Patent Document 1).

JP-A-09-359 (Figs. 4 and 7)

However, the conventional shelves mentioned above have the problem that they are difficult to dismantle, and a solution to this problem is needed.

The invention of claim 1, which was made to solve the above problem, is a shelf in which multiple supports are arranged between three or more shelf boards arranged with a gap between them vertically, and the fitting shafts at both ends of the supports are fitted into multiple fitting holes that open into the upper or lower surfaces of the shelf boards, the shelf is equipped with locking holes that communicate with the inside and outside of the fitting holes from the side, elastic deformation parts that are provided on the fitting shafts and elastically deform in a direction that intersects with the vertical direction, and locking protrusions that are formed on the elastic deformation parts and protrude laterally, are received in the locking holes and lock onto the opening edges of the locking holes, and in the shelf boards where the fitting holes open on both the upper and lower surfaces, the locking holes of both the upper and lower fitting holes are continuous.

The invention of claim 2 is the shelf of claim 1, which includes a partition wall separating the upper and lower fitting hole portions, and a cutout portion formed by cutting out a portion of the partition wall facing the locking hole.

The invention of claim 3 is the shelf of claim 1 or 2, in which the elastic deformation portion is a cantilever extending in the vertical direction, the locking protrusion protrudes laterally from the tip of the elastic deformation portion, and a recess is formed on the back side of the locking protrusion of the elastic deformation portion.

The invention of claim 4 is a shelf according to any one of claims 1 to 3, in which the outer surface of the locking protrusion is provided with an insertion inclined portion that is inclined from a vertical midpoint of the locking protrusion toward the tip of the elastically deforming portion so as to approach the inner surface of the elastically deforming portion, and a removal inclined portion that is inclined from a vertical midpoint of the locking protrusion toward the base end of the elastically deforming portion so as to approach the inner surface of the elastically deforming portion, and the elastically deforming portion has a bending strength that does not bend to a position where the entire locking protrusion can enter the fitting hole even if the opening edge of the fitting hole abuts against the insertion inclined portion due to the weight of the shelf board alone.

The invention of claim 5 is a shelf according to any one of claims 1 to 4, in which the fitting holes are open on both the top and bottom of all the shelf boards, and the locking holes of both the top and bottom fitting holes of all the shelf boards are continuous.

In the shelf of claim 1, when the elastic deformation portion of the support is bent and the fitting shaft portion is pushed into the fitting hole portion of the shelf board, the elastic deformation portion elastically returns to its original position when the locking protrusion of the elastic deformation portion faces the locking hole from inside the fitting hole portion, and the locking protrusion locks onto the end of the locking hole, preventing the fitting shaft portion from coming out of the fitting hole portion. Here, since the locking protrusion is exposed to the outside through the locking hole, if the locking protrusion is pressed from the outside, the locking of the locking hole is easily released, and the fitting shaft portion can be easily removed from the fitting hole portion. In addition, in a shelf board in which the fitting hole portion is open on both the top and bottom surfaces and the locking holes are formed separately on the top and bottom for each of the top and bottom fitting hole portions, the pressing operation is restricted to avoid interference between the wall portion between the top and bottom locking holes and the finger or tool pressing the locking protrusion. However, in the shelf disclosed herein, the locking holes of both the top and bottom fitting hole portions are continuous, so there is no such restriction and the locking protrusion can be easily pressed. After the fitting shaft is removed from one of the upper and lower fitting holes, the operation of pressing the locking protrusion on the remaining fitting shaft becomes even easier. In this way, with the shelf disclosed herein, each fitting shaft can be easily removed from each fitting hole, facilitating the dismantling of the shelf.

In the shelf of claim 2, the strength is increased by the partition walls separating the two fitting holes of each pair arranged vertically. In addition, by providing a cutout portion in the partition wall facing the locking hole, the movable range of the elastic deformation portion can be widened, and the locking protrusion can be easily released.

The shelf of claim 3 has a recess on the back side of the locking protrusion, so if the support is made of injection-molded resin, sinking of the resin is suppressed. This makes it possible to enlarge the locking protrusion and reduce the concentration of stress on the fingertips when pressing the locking protrusion.

In the shelf of claim 4, the insertion inclined portion or removal inclined portion of the locking projection slides against the opening edge of the locking hole or the opening edge of the fitting hole, bending the elastic deformation portion, which makes it easy to insert and remove the fitting shaft into the fitting hole. In addition, the elastic deformation portion has a bending strength that does not bend to a position where the entire locking projection can enter the fitting hole even if the opening edge of the fitting hole abuts against the insertion inclined portion due to the weight of the shelf board alone. Therefore, when assembling the shelf by one person, the fitting shaft will not be unintentionally inserted into the fitting hole, making the assembly work easier.

In the shelf of claim 5, all shelves, including the top and bottom shelves, have fitting holes on both the top and bottom, and the locking holes of both the top and bottom fitting holes are continuous, so pressing the locking protrusions is easy when disassembling all the shelves and the supports, making dismantling easy.

FIG. 1 is a perspective view of a shelf according to a first embodiment of the present disclosure; Front perspective view of the support A perspective view of the support from the rear A perspective view of the fitting shaft portion Cross-section of the shelf and post joint A perspective view of the shelf from below A perspective view of a fitting hole Cross-section of girder 5 is a cross-sectional view of the AA section of FIG. (A) is a side cross-sectional view of a girder when a locking protrusion is pressed, and (B) is a side cross-sectional view of a girder of a comparative example. FIG. 13 is a perspective view of a portion of a shelf according to a second embodiment of the present disclosure.

[First embodiment]
A shelf 10 according to a first embodiment of the present disclosure will be described below with reference to Figures 1 to 10. As shown in Figure 1, the shelf 10 according to this embodiment includes a plurality of shelf boards 11 arranged vertically at intervals, and a plurality of supports 30 arranged between the shelf boards 11. The shelf boards 11 and the supports 30 are injection molded products of synthetic resin, and the shelf boards 11 and the supports 30 have the same shape. The fitting shaft portions 31 at both the upper and lower ends of the supports 30 are fitted into fitting holes 21 opening at the four corners on both the upper and lower faces of the shelf board 11 to assemble the shelf 10. The number of shelf boards 11 can be selected arbitrarily, and as an example, a shelf 10 having four shelf boards 11 is shown in Figure 1.

First, the structure of the support 30 will be described. Figures 2 and 3 show the support 30 in a standalone state. As shown in these figures, the support 30 has a symmetrical shape above and below the middle position in the vertical direction. Specifically, the support body 32 of the support 30, excluding a pair of mating shaft portions 31 at both ends, has a groove wall 33 that has a U-shaped cross section and extends in the vertical direction, both ends of which are closed by a pair of horizontal end walls 34, and has a reinforcing rib 35 (see Figure 3) inside.

Hereinafter, the side where the groove wall 33 is open will be referred to as the "rear side of the support 30", and the opposite side will be referred to as the "front side of the support 30", while the groove width direction of the groove wall 33 will be referred to as the "lateral direction of the support 30", and the horizontal direction perpendicular to that will be referred to as the "front-rear direction of the support 30".

The groove wall 33 has a width greater than its thickness in the front and rear directions, and as shown in FIG. 3, the rear surface of the groove wall 33 is a vertical flat surface. The pair of end walls 34 are shaped like a horizontally long rectangle with four chamfered corners, and their rear ends protrude rearward from the rear end surface of the groove wall 33. The groove wall 33 is narrowed toward both ends in the longitudinal direction, and the intermediate portion between them is narrower than both ends. The reinforcing rib 35 is composed of a vertical rib 35A that connects the pair of end walls 34 at the center of the lateral direction of the groove wall 33, and multiple horizontal ribs 35B that are perpendicular to the vertical rib 35A at multiple positions in the longitudinal direction. The rear end surfaces of the multiple horizontal ribs 35B are arranged flush with the rear end surface of the groove wall 33, and the rear end surface of the vertical rib 35A is located slightly inside the groove wall 33 from the rear end surfaces of the groove wall 33 and the horizontal ribs 35B.

As shown in Figures 4(A) and 4(B), the fitting shaft portion 31 comprises a shaft portion main body 36 that protrudes from the outer surface of the end wall 34, and an elastic deformation portion 40. The shaft portion main body 36 also comprises first and second horizontal fitting plate portions 38A, 38B located at the tip and the middle portion in the vertical direction, and a number of ribs 37A to 37D that are perpendicular to these.

The first and second mating plate parts 38A, 38B are shaped like a horizontally elongated rectangle smaller than the end wall 34, with four rounded corners and a rectangular cutout 38C that opens to one front side. Additionally, the second mating plate part 38B is slightly larger overall than the first mating plate part 38A.

The opening edge of the notch 38C of the first fitting plate 38A and the end wall 34 are connected by a groove wall 37E. As shown in FIG. 9, the shaft body 36 is provided with a rib 37D corresponding to the bottom wall of the groove wall 37E, a pair of ribs 37B extending from the rib 37D on both sides, three ribs 37A extending rearward from the lateral center of the rib 37D and the approximate lateral center of the pair of ribs 37B, a pair of ribs 37C corresponding to both side walls of the groove wall 37E, and a pair of ribs 37C extending forward from the pair of ribs 37B in parallel with the ribs 37C. As shown in FIG. 4(A) and FIG. 4(B), the tip surfaces of the ribs 37A to 37D and the side surfaces of the first and second fitting plate parts 38A and 38B are arranged flush with each other at the intersections. As a result, the entire shaft body 36 has a structure with a vertical groove 36M on the front surface of the rectangular column. The tip surfaces of the ribs 37A to 37D are inclined so that they protrude slightly outward as they approach the end wall 34, and the shaft body 36 becomes slightly thicker toward the base end.

As shown in FIG. 4B, the elastic deformation portion 40 is in the form of a cantilever that stands up from the end wall 34, with the base end of the elastic deformation portion 40 located at the front end within the vertical groove 36M, and the tip side of the elastic deformation portion 40 located outside the vertical groove 36M due to the inclination of the front surface of the shaft body 36. A locking projection 41 is formed on the outer surface of the tip of the elastic deformation portion 40.

5, the entire elastic deformation portion 40 including the locking projection 41 protrudes slightly away from the end wall 34 from the end face 36A of the shaft body 36. The locking projection 41 protrudes forward from a position of the elastic deformation portion 40 shifted toward the end wall 34 from the end face 36A of the shaft body 36 to the tip of the elastic deformation portion 40. Furthermore, the protruding end 41B of the outer surface of the locking projection 41, which is the furthest forward from the outer surface 40F of the elastic deformation portion 40, is approximately parallel to the outer surface 40F of the elastic deformation portion 40. Further, on the side farther from the end wall 34 than the protruding end 41B, there is an insertion inclined portion 41A that is inclined so as to approach the inner surface 40R of the elastic deformation portion 40 as it approaches the tip of the elastic deformation portion 40, and on the end wall 34 side than the protruding end 41B, there is a locking portion 41D that rises vertically from the outer surface 40F of the elastic deformation portion 40, and a removal inclined portion 41C that connects between the locking portion 41D and the protruding end 41B and is inclined in the opposite direction to the insertion inclined portion 41A in the up-down direction. Also, the width of the removal inclined portion 41C and the width of the locking portion 41D in the front-to-back direction are approximately the same.

The release inclined portion 41C may be an arcuate shape with a rounded edge. Alternatively, the release inclined portion 41C may be substantially eliminated (specifically, may be only slightly chamfered) and the side cross-sectional shape of the locking protrusion 41 may be made trapezoidal, thereby strengthening the locking of the locking protrusion 41 to the opening edge of the locking hole 22 described below.

As shown in FIG. 4(A), a recess 42 is formed on the back side of the locking protrusion 41 of the elastic deformation portion 40. Also, as shown in FIG. 5, the recess 42 is formed by recessing the range from a position at approximately the same height as the intersection of the protruding end 41B of the locking protrusion 41 and the release inclined portion 41C to the tip of the elastic deformation portion 40 in a stepped shape, and is open to the inner surface 40R and the tip surface 40S of the locking protrusion 41. Also, as shown in FIG. 4, the width of the recess 42 is slightly smaller than the front end of the locking protrusion 41. Note that, as shown in FIG. 5, the depth of the recess 42 is slightly smaller than the thickness of the part of the elastic deformation portion 40 that is proximal to the locking protrusion 41.

The structure of the support 30 is now explained. Next, the structure of the shelf board 11 will be explained. As shown in FIG. 1, the shelf board 11 has a structure in which girders 14, which are rectangular in cross section, hang down from the four corners of the underside of the rectangular main board 12. Outer edge ribs 13 protrude downward from the outer edge of the underside of the main board 12. The amount of downward protrusion of each outer edge rib 13 gradually increases from positions near both ends in the longitudinal direction toward both ends. Both ends of the outer edge ribs 13 in the longitudinal direction form part of the side walls of the girders 14. As shown in FIG. 6, underside ribs 15 are arranged in a lattice pattern across the entire underside of the main board 12.

In addition, as shown in Figure 1, multiple anti-slip grooves 12M extending vertically and horizontally are formed on the upper surface of the main plate portion 12.

As shown in Figure 6, the cross section of the girder 14 is a rectangle that is long in the short direction of the shelf board 11, and this rectangle is the same as the rectangular planar shape of the end wall 34 of the support 30. Also, as shown in Figure 7 (A), the upper surface of the shelf board 11 has an upper surface recess 12A formed by recessing a rectangular area directly above the lower surface of the girder 14 in a stepped shape deeper than the thickness of the end wall 34 of the support 30.

A main hole 18A is formed on the inside of the girder 14, with a rectangular cross section that is long in the short direction of the shelf board 11, and multiple lightening holes 18C are formed on both sides of the main hole 18A in the short direction of the shelf board 11. A partition wall 17 is provided in the exact center between the upper surface of the girder 14, which corresponds to the bottom surface of the upper surface recess 12A, and the lower surface of the girder 14, and the main hole 18A and multiple lightening holes 18C are divided into two parts, upper and lower, by the partition wall 17. The upper and lower parts of the divided main hole 18A above and below the partition wall 17 form a pair of fitting holes 21.

As shown in FIG. 6, the girder 14 has a locking hole 22 that opens on the outer surface of the short side of the shelf board 11. As shown in FIG. 7(A), the locking hole 22 is a rectangle that extends in the vertical direction across the upper and lower sides of the partition wall 17, and is connected to both of the pair of fitting holes 21 as shown in FIG. 8. Also, as shown in FIG. 5, approximately half of the outer side of the inner side of the locking hole 22 in the inward and outward direction is a chamfered surface 22B in which the corner between the inner side of the locking hole 22 and the outer side of the girder 14 is chamfered. Also, approximately half of the inner side of the locking hole 22 is a plane that is approximately perpendicular to the outer side of the girder 14, and both ends of the locking hole 22 in the vertical direction on the plane are locking portions 22A that lock the locking protrusions 41 as described later. Also, as shown in FIG. 8, the partition wall 17 has a notch 17K formed by cutting out the edge facing the locking hole 22 in a rectangular shape.

As shown in Figures 7(A) and 7(B), reinforcing ribs 19 are formed on both the top and bottom surfaces of the partition wall 17. The reinforcing ribs 19 are structured such that multiple radial ribs 19A extend radially from a circular rib 19B located in the center of the planar cross section of the fitting hole 21. In addition, the multiple radial ribs 19A are open on the cutout 17K side so as to avoid the cutout 17K.

The inner surface of the fitting hole 21 is provided with an introduction section 21G that gradually narrows from the opening end to a position close to the opening end, and narrows at an angle that is much smaller than that of the introduction section 21G from the position close to the opening end to the partition wall 17. The inner surface of the fitting hole 21 is also formed with a number of protrusions 21T that extend in the vertical direction at positions where the ribs 37A-37C of the fitting shaft 31 are butted against each other.

This concludes the explanation of the configuration of the shelf 10 of this embodiment. Next, an example of the assembly work and the disassembly work of this shelf 10 will be explained. To assemble the shelf 10 in a state where it is disassembled into a number of shelf boards 11 and a number of supports 30, for example, the fitting shaft parts 31 at the lower ends of the supports 30 are fitted into the fitting hole parts 21 at the four corners of the top surface of the lowest shelf board 11.

To achieve this, the rectangular planar shape of the end wall 34 of the support 30 and the rectangular planar cross-sectional shape of the girder 14 are overlapped, the elastic deformation portion 40 of the support 30 is arranged so as to face the locking hole 22 side in the fitting hole 21, and the fitting shaft 31 is pushed into the fitting hole 21. Then, the elastic deformation portion 40 is deflected by the sliding contact between the insertion inclined portion 41A of the locking protrusion 41 of the fitting shaft 31 and the opening edge of the fitting hole 21, and almost the entire elastic deformation portion 40 including the locking protrusion 41 is received in the vertical groove 36M of the shaft main body 36, and the fitting shaft 31 is fitted into the fitting hole 21. Then, as shown in FIG. 5, when the end wall 34 abuts against the end face of the girder 14, the locking protrusion 41 faces the locking hole 22, the elastic deformation portion 40 elastically returns, and the locking protrusion 41 engages with the locking hole 22. This prevents the fitting shaft 31 from slipping out of the fitting hole 21 (i.e., it is fitted and fixed), and the entire support 30 is fixed to the shelf board 11.

In detail, when the locking projection 41 engages with the locking hole 22, the locking portion 41D of the locking projection 41 and the locking portion 22A of the locking hole 22 face each other in approximately parallel relation. This prevents the fitting shaft portion 31 from easily coming out of the fitting hole portion 21 even if it is pulled in the direction of removal. In addition, when the locking projection 41 engages with the locking hole 22, the protruding end portion 41B of the locking projection 41 is located inside the locking hole 22 with respect to the outer surface of the beam portion 14. This prevents foreign objects from coming into contact with the locking projection 41.

Once the supports 30 are fixed to all four corners of the top surface of the bottom shelf 11 and in an upright position, the fitting holes 21 at the four corners of the bottom surface of the second shelf 11 are placed on top of the supports 30, and each corner of the second shelf 11 is pressed down one by one. Then, the fitting shafts 31 at the top ends of the supports 30 are fitted and fixed into the fitting holes 21 in the same way as the fitting shafts 31 at the bottom ends. Once the supports 30 are fixed to all four corners of the bottom surface of the second shelf 11, the supports 30 are also fixed to the four corners of the top surface of the second shelf 11, and the third shelf 11 is placed on top of the supports 30, and the supports 30 are also fixed to the four corners of the bottom surface of the third shelf 11, and the assembly work of the shelf 10 is completed.

Here, in the shelf 10 of this embodiment, when the force pressing the fitting shaft 31 into the fitting hole 21 is equal to or less than the weight of the shelf board 11, the elastic deformation portion 40 does not bend until the entire portion is received in the vertical groove 36M of the shaft body 36. This prevents the fitting shaft 31 from being unintentionally fitted into the fitting hole 21 by the weight of the shelf board 11, making it easy for even one person to assemble the shelf 10.

The dismantling of the shelf 10 can be carried out as follows. To dismantle the shelf 10, for example, the fitting shafts 31 of the posts 30 can be pulled out of the fitting holes 21 of the shelf boards 11 in the reverse order of the assembly work described above. Specifically, by pressing the locking protrusions 41 from the outside of the locking holes 22 and pushing the locking protrusions 41 in until the entire locking protrusions 41 are removed from the locking holes 22 into the fitting holes 21, the fitting shafts 31 can be easily pulled out of the fitting holes 21.

If the locking holes 22 were formed separately for the upper and lower fitting holes 21 of each girder 14 as shown in FIG. 10(B), the pressing operation would be restricted in order to avoid interference between the wall 90 between the upper and lower locking holes 22 and the finger or tool pressing the locking protrusion 41. In contrast, in the shelf 10 of this embodiment, the locking holes 22 are formed across both the upper and lower fitting holes 21 as shown in FIG. 10(A), so there is no such restriction, and the locking protrusion 41 can be easily pressed and the fitting shaft 31 can be easily removed from the fitting hole 21. In addition, after the fitting shaft 31 is removed from one of the upper and lower fitting holes 21, the pressing operation of the locking protrusion 41 on the remaining other fitting shaft 31 becomes even easier. Moreover, the fitting holes 21 are open on both the top and bottom of all the shelves 11, including the bottom and top shelves 11, where the support 30 can only be attached from one side of the shelf 11, and the locking holes 22 of all the upper and lower fitting holes 21 are continuous, making it easy to press all the locking protrusions 41. As a result, in the shelf 11 of this embodiment, the fitting shafts 31 can be easily removed from the fitting holes 21, making it easy to dismantle the shelf 11. Also, compared to a case where two locking holes 22 are formed for each beam 14, the locking holes 22 are combined into one, which is simplified and has a superior appearance, and the structure of the mold used to mold the beam 14 from resin is also simplified, reducing manufacturing costs.

As shown in FIG. 5, in the shelf 10 of this embodiment, when the fitting shaft portion 31 is fitted and fixed in the fitting hole portion 21, the tip surface 40S of the elastic deformation portion 40 is located at a position slightly away from the partition wall 17 toward the opening end side of the fitting hole portion 21. This ensures that the tip of the elastic deformation portion 40 can move inward. Moreover, since the partition wall 17 has a notch portion 17K facing the locking hole 22, even if the tip of the elastic deformation portion 40 faces the partition wall 17 from the locking hole 22 side due to manufacturing variations, the tip of the elastic deformation portion 40 can move inward. As a result, interference between the partition wall 17 and the elastic deformation portion 40 is reliably prevented when the elastic deformation portion 40 is pushed inward, and the locking protrusion 41 can be pressed stably and easily to release the engagement between the locking protrusion 41 and the locking hole 22. In addition, in the shelf 10 of this embodiment, by providing a recess 42 on the back side of the locking protrusion 41, sinking of the resin is suppressed even if the locking protrusion 41 is made large. In other words, by providing the recess 42, the locking protrusion 41 can be made large, which prevents stress concentration on the fingertip pressing it. In addition, the outer surface of the locking protrusion 41 is rounded and bulges outward, which also prevents stress concentration on the fingertip. Note that the locking protrusion 41 may be pressed using a tool.

In addition, even if the entire locking protrusion 41 is not pushed into the fitting hole 21 to a position where it is completely removed from the locking hole 22, if the locking protrusion 41 is pushed into a position where the inner opening edge of the locking hole 22, where the inner surface of the locking hole 22 and the inner surface of the fitting hole 21 intersect, faces a part of the release inclined portion 41C of the locking protrusion 41 in the vertical direction, even if the fitting shaft portion 31 is pulled in this state, the elastic deformation portion 40 will bend due to the sliding contact between the release inclined portion 41C and the inner opening edge of the locking hole 22, and the fitting shaft portion 31 will come out of the fitting hole portion 21. This makes it easy to pull out the fitting shaft portion 31 from the fitting hole portion 21. In this way, all the shelf boards 11 and all the supports 30 are separated and the dismantling of the shelf 10 is completed.

As described above, in the shelf 10 of this embodiment, the locking projection 41 is exposed to the outside through the locking hole 22, so that the locking projection 41 can be easily pressed from the outside to release the lock from the opening edge of the locking hole 22, and the fitting shaft portion 31 can be easily removed from the fitting hole portion 21. This makes it easy to dismantle the shelf 10. Furthermore, because the locking hole 22 is formed across both the upper and lower fitting hole portions 21, restrictions on the pressing operation due to interference between a finger or tool pressing the fitting hole portion 21 and the wall portion of the shelf board 11 are reduced, which also makes it easy to dismantle the shelf 10.

[Second embodiment]
As shown in Fig. 11, in the shelf 10V of this embodiment, the locking holes 22 provided in each girder 14 of the shelf board 11V are arranged at positions facing the locking holes 22 in the girder 14 of the first embodiment, and the inside of the girder 14 is structured such that the inside of the girder 14 of the first embodiment is rotated 180 degrees around the vertical axis. In addition, the fitting shafts 31 at both ends of the support 30V are also rotated 180 degrees around the vertical axis. In addition to the same effects as the first embodiment, the shelf 10V of this embodiment has an excellent appearance because the locking holes 22 face the inside of the shelf board 11V.

[Other embodiments]
(1) The elastic deformation portion 40 in the first and second embodiments was in the form of a cantilever beam, but it may be in the form of a double-supported beam that is extended across the opposing surfaces of the vertical groove 36M of the shaft body 36. The elastic deformation portion 40 does not need to have a beam structure, and for example, if the entire fitting shaft portion 31 forms a cylinder that is fitted into the fitting hole portion 21 and a part of the cylinder is elastically deformable inwardly and outwardly, that part may be used as the elastic deformation portion and a locking protrusion may be formed thereon.

(2) In the above embodiment, the upper and lower fitting hole portions 21 of the shelf board 11 are separated by a partition wall 17, but the upper and lower fitting hole portions 21 may be connected without the partition wall 17.

(3) In the shelf 10 of the above embodiment, the fitting holes 21 are arranged at the four corners of the shelf board 11, but the arrangement of the fitting holes 21 is not limited to the four corners of the shelf board 11.

(4) In the shelf 10 of the above embodiment, the fitting hole portion 21 is open on both the top and bottom surfaces of all the shelves 11, including the bottommost and topmost shelves 11. However, the fitting hole portion 21 may be open only on the top surface of the bottommost shelf 11, and the fitting hole portion 21 may be open only on the bottom surface of the topmost shelf 11. Note that even in a shelf 11 in which the fitting hole portion 21 is open only on one of the top or bottom surfaces, the locking hole 22 may be sized to receive two or more locking projections 41 lined up vertically, as in the first embodiment.

Note that although specific examples of the technology included in the scope of the claims are disclosed in this specification and drawings, the technology described in the claims is not limited to these specific examples, but includes various modifications and variations of the specific examples, as well as parts of the specific examples taken separately.

10, 10V Shelf 11, 11V Shelf board 17 Partition wall 17K Notch 21 Fitting hole 22 Locking hole 30, 30V Support 31 Fitting shaft 40 Elastically deforming portion 41A Insertion inclined portion 41C Removal inclined portion 42 Recess

Claims (5)

A shelf is assembled by arranging multiple supports between three or more shelf boards arranged vertically and spaced apart, and fitting shafts at both ends of the supports are fitted into multiple fitting holes opening on the upper or lower surfaces of the shelf boards,
A locking hole communicating with the inside and outside of the fitting hole portion from a side;
an elastic deformation portion provided on the fitting shaft portion and elastically deformable in a direction intersecting with the up-down direction;
a locking projection formed on the elastic deformation portion, projecting laterally, and received in the locking hole to be locked to an opening edge of the locking hole;
In the shelf plate in which the fitting hole portion is open on both the upper and lower surfaces, the locking holes of the upper and lower fitting hole portions are continuous with each other. A partition wall that separates the upper and lower fitting hole portions;
The shelf according to claim 1 , further comprising a notch formed by cutting out a portion of the partition wall facing the engagement hole. The elastic deformation portion has a cantilever shape extending in the vertical direction,
The locking projection projects laterally from a tip end of the elastic deformation portion,
3. The shelf according to claim 1, wherein the elastically deformable portion has a recess formed on a rear side of the locking projection. an insertion inclined portion inclined on an outer surface of the locking projection so as to approach an inner surface of the elastically deformable portion from a midpoint of the locking projection in a vertical direction toward a tip of the elastically deformable portion;
a release inclined portion that is inclined from a middle position of the locking projection in the up-down direction toward the base end side of the elastic deformation portion so as to approach an inner surface of the elastic deformation portion,
A shelf as described in any one of claims 1 to 3, wherein the elastic deformation portion has a bending strength such that the opening edge of the fitting hole portion does not bend to a position where the entire engaging protrusion can enter the fitting hole portion even if the opening edge abuts against the insertion inclined portion due to the weight of the shelf plate alone. The fitting hole portion is open on both the upper and lower surfaces of all the shelf boards,
5. The shelf according to claim 1, wherein the locking holes of all of the upper and lower fitting hole portions of all of the shelf boards are continuous with each other.

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