JP2008080038A - Folding rack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a folding rack having various advantages such as reducing the planar size when stored compared with that of the conventional example. <P>SOLUTION: This folding racks have a rectangular bottom wall 1 in plan view, a back wall 3 and a pair of left/right side walls 5. The bottom wall 1 has a rear edge side bank part 14 provided along the rear-side edge part of the bottom wall body 10, and left-side and right-side bank parts 17 provided along the left/right side edge parts of the bottom wall body 10 respectively. The back wall 3 is so connected to the rear edge side bank part 14 of the bottom wall via a hinge mechanism H1 as to change over between an erecting position erecting to the bottom wall 1 and an inward falling position falling approximately in parallel onto the bottom wall 1. The left/right side walls 5 are so connected to the left-side and right-side bank parts 17 of the bottom wall respectively via hinge mechanisms H2 as to change over between an erecting position erecting to the bottom wall 1 and an inward falling position falling approximately in parallel onto the bottom wall 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a folding and arranging shelf that can be assembled and three-dimensional when in use, and can be folded and stored when not in use.

  As a practical example of a folding and arranging shelf, for example, a postcard sorting shelf is known. A postcard sorting shelf is a postcard sorting shelf used in a post office to sort New Year's postcards in order of delivery. Since the sorting of New Year's postcards is concentrated at the end of the year and the beginning of the year, postcard sorting shelves are not necessary at other times, and many of them are stored in warehouses. For this reason, a postcard sorting shelf with good storability has been demanded.

  Patent Document 1 discloses a postcard sorting shelf that can be used as a multistage rack by stacking a plurality of sorting shelves up and down, and can be stored in a flat form when not in use. That is, the postcard sorting shelf of Patent Document 1 has a horizontally long rectangular bottom plate (30), a back plate (40) connected to the rear edge of the bottom plate so as to be expandable, and both left and right ends of the bottom plate. A pair of left and right side plates (10) connected to each other in a deployable manner. Each side plate is formed as a synthetic resin integrated molded product composed of a side plate member (11) and a terminal member (12) that are foldably connected by a thin-walled connecting portion (13). By fixing the end member of each side plate, the side plate member of each side plate can be developed with respect to the bottom plate. Further, the back plate is formed so that it can be connected to and released from the side plate members of the side plates at both left and right end portions. In use, the left and right end portions of the back plate and the rear end portions of the side plate members of each side plate are coupled to each other so that the back plate and the left and right side plates support each other while maintaining an upright state. According to this postcard sorting shelf, when not in use, the back plate and the left and right side plates can be expanded to a substantially flat state by tilting outside the sides of the bottom plate (see FIG. 2 of the same document). It can be stored compactly by stacking (see FIG. 11 of the same document).

Japanese Patent No. 3016976 (refer mainly to drawings and claims)

  However, the postcard sorting shelf of Patent Document 1 has some drawbacks. For example, since the structure is such that the back plate and the left and right side plates are folded and deployed outside the sides of the bottom plate when not in use, there is a disadvantage that the plane size during storage becomes large and the occupied area in the warehouse is large.

  Further, the side plate members of the left and right side plates are only weakly connected to the end members of the side plates fixed to the end portions of the bottom plate via the thin-walled connecting portions, and in use, the side plate members The rear end portion is merely connected to the end portion of the back plate so as to keep the standing state. For this reason, when an external force is applied to the side plate member (particularly, the front end portion thereof), there are disadvantages that the front end portion of the side plate member wobbles from side to side or the side plate member falls down unexpectedly.

  Furthermore, since the end member (12) of each side plate fixed to the end portion of the bottom plate and the side plate member (11) of the side plate are merely connected via a thin-walled connecting portion (13), As shown in FIG. 4B of Patent Document 1, a front L-shaped partition is formed immediately below the standing side plate member by a horizontal end surface at the lower end of the side plate member and a vertical end surface at the left and right ends of the end member. There is a stepped space. That is, the vertical load applied to the side plate member is only supported by the end member through the thin-walled connecting portion extending along the lower edge of the side plate member. Therefore, if a plurality of postcard sorting shelves with such a structure are stacked one above the other and all vertical loads are concentrated on the side plate members of the lowermost sorting shelf, they will be attached to the thin-walled joints on the side plates of the lowermost sorting shelf. A crack may occur, and the connection between the end member and the side plate member in the side plate may be broken. That is, there is a drawback that the side plate of the lowermost sorting shelf cannot sufficiently support the load from above.

  An object of the present invention is to provide a folding and arranging shelf that has various advantages such as eliminating the various drawbacks of the conventional example and reducing the plane size during storage.

  The invention of claim 1 includes a flat rectangular bottom wall, a back wall, and a pair of left and right side walls, the back wall on the bottom wall via a hinge mechanism with respect to a rear edge of the bottom wall. The left and right side walls are connected to the left and right side edges of the bottom wall via hinge mechanisms so as to be able to fall inward. Folding shelf.

  The invention according to claim 2 includes a bottom wall, a back wall, and a pair of left and right side walls, and the bottom wall is provided along a bottom wall body having a planar rectangular shape and a rear edge of the bottom wall body. A rear edge bank, and a left bank and a right bank provided along the left and right side edges of the bottom wall body, respectively, and the back wall is a rear edge bank of the bottom wall. Via a hinge mechanism to the part, and is connected so as to be switchable between an upright position that stands up with respect to the bottom wall and an inclining position that falls on the bottom wall substantially in parallel, the left and right side walls are Each of the left and right bank portions of the bottom wall is connected via a hinge mechanism so as to be switchable between an upright position that stands up with respect to the bottom wall and an inclining position that falls substantially parallel to the bottom wall. It is the folding arrangement shelf characterized by having.

  According to a third aspect of the present invention, in the folding and arranging shelf according to the second aspect, the protruding height of the rear edge bank portion from the upper surface of the bottom wall body is set to be equal to or less than the thickness of the back wall. The projecting height of the left and right bank portions from the upper surface of the bottom wall body is set higher than the projecting height of the rear edge bank portion, and the back wall is used as the rear edge bank portion of the bottom wall. The hinge mechanism that connects the left and right side walls to the left and right bank portions of the bottom wall is higher than the hinge mechanism to be connected.

  According to a fourth aspect of the present invention, in the folding and arranging shelf according to the second or third aspect, each of the left and right side walls is provided in the vicinity of a rear end portion of each side wall to be engaged with an end portion of the back wall when standing. And a standing lock member that is vertically slidably mounted in the vicinity of the front end portion of each side wall, and is arranged in a standing position near the left end of the bottom wall and the front end portion of the right bank portion. The standing lock engaging recesses are respectively provided so as to face the standing lock members of the formed side walls, and a part of the standing lock member engages with the standing lock engagement recesses to form the side walls. It is possible to switch between a lock position that locks the stand in the standing position and an unlock position that releases the standing position lock on the side wall by detaching from the standing lock engaging recess.

  According to a fifth aspect of the present invention, in the folding and arranging shelf according to the second, third, or fourth aspect, the outer corner portion of the portion where the bottom wall body and the left or right bank portion are coupled, A level difference (S) is provided directly under each of the left and right bank portions, and the rear side of the left side and the right side bank are involved in the horizontal positioning of the sorting shelves during stacking and are arranged at the lowest level during stacking. A bank lower convex part for supporting a load borne by the left or right bank part of the bottom wall of the shelf is provided so as to fill a part of the step (S), and the left and right bank of the bottom wall. Each of the parts is exposed to the upper part of each bank when the corresponding side wall is arranged at the inward position, and the upper side of the rear side and the right and left side walls are stacked on the upper side of the rear side. Engage with the lower convex part of the bank of other arranged shelves Wherein the positioning recesses when folded for performing horizontal positioning of the other pigeon is provided Te.

  According to a sixth aspect of the present invention, in the folding rearrangement shelf according to the fifth aspect, at the upper end of each of the left and right side walls, the rear wall and the left and right side walls are stowed at the upper stage of the rearrangement shelf. A standing recessed portion for positioning is provided for engaging with the lower convex portion of the bank of another sorting shelf positioned so as to position the other sorting shelf in the horizontal direction.

  The invention according to claim 7 is the folding and arranging shelf according to any one of claims 2 to 6, wherein the bottom wall, the back wall, and the left and right side walls are synthetic resin molded products, and the front edge of the bottom wall body A metal bar having a length substantially equal to the length in the left-right direction of the bottom wall is mounted in the vicinity of the portion, and the left end and the right end of the metal bar are directly below the left side and the right bank of the bottom wall. The left and right end portions of the metal bars are placed on the left and right side walls of the other sorting shelves located at the bottom of the sorting shelf when the sorting shelves with the back wall and the left and right side walls standing are stacked. It is characterized by being respectively supported by the upper end part.

  According to an eighth aspect of the present invention, in the folding and arranging shelf according to the seventh aspect, on the lower surface side of the bottom wall body, a housing groove for housing the metal bar is parallel to the front edge of the bottom wall body. And a tunnel-shaped holding part for holding the metal bar in the receiving groove.

  The invention according to claim 9 is the folding and arranging shelf according to claim 8, wherein the bottom wall is configured to restrict movement of the metal bar in the left-right direction so that the metal bar is the accommodation groove or the tunnel-shaped holding part. It is characterized in that an anti-detachment preventive tool for preventing it from coming off is detachably attached.

  The invention according to claim 10 is the folding and arranging shelf according to any one of claims 2 to 9, wherein an inner corner portion of a portion where the bottom wall main body and the rear edge side bank portion are coupled with A groove for avoiding interference extends along the boundary between the bottom wall main body and the rear edge bank, and the groove divides the upper surface of the bottom wall main body from the front surface of the back wall in the standing position. These two surfaces are in a discontinuous orthogonal relationship.

  According to the folding and arranging shelf of claims 1 and 2, it can be used as an arranging shelf by raising the back wall and the left and right side walls with respect to the bottom wall, and can be stored in a warehouse or the like by folding the back wall and the left and right side walls when not in use. Can improve sex. When folding the shelves, the back wall and left and right side walls are tilted inward on the bottom wall, so that the plane size when folded can be kept to the plane size equivalent to the bottom wall, and the occupied area when storing in a warehouse etc. It can be made smaller than the conventional example.

  According to the folding and arranging shelf of claim 3, the hinge mechanism that connects the left and right side walls to the left and right bank portions of the bottom wall is more preferable than the hinge mechanism that connects the back wall to the rear edge bank portion of the bottom wall. Because it is in a high position, after the back wall is tilted inward on the bottom wall, the left and right side walls are switched from the standing position to the inward position, so that the left and right side walls overlap the folded back wall. And can be folded. Therefore, the plane size at the time of folding can be limited to the plane size of the bottom wall, and the occupied area when stored in a warehouse or the like can be made smaller than in the conventional example.

  According to the folding and arranging shelf of claim 4, when each side wall stands, the back wall engaging portion provided in the vicinity of the rear end portion of each side wall is engaged with the end portion of the standing back wall, The standing lock member provided in the vicinity of the front end is disposed at the lock position, and a part of the lock member is engaged in the engaging recess for the standing lock provided in the vicinity of the front end of the left or right bank corresponding to the side wall. By doing so, the rear end portion of each side wall is supported by the back wall, and the front end portion of each side wall engages with the left or right bank portion of the bottom wall via the standing lock member so as not to fall inward. As a result, each side wall is locked in the standing position, and even when an external force is applied to the side wall, the side wall can be prevented from wobbling or unexpectedly falling down. On the other hand, by switching the standing lock member of each side wall from the locked position to the unlocked position, the standing position lock can be released and the side wall can fall down.

  According to the folding and arranging shelf of claim 5, a bank-bottom convex portion for supporting a load borne by the left or right bank of the bottom wall of the arranging shelf positioned at the bottom when a plurality of folding and arranging shelves are stacked. However, it is provided so that a part of level | step difference (S) may be filled just under each of the left bank part and right bank part of a bottom wall. Therefore, even when the sorting shelf is located at the lowest level, the compressive strength against the vertical load of the sorting cabinet at the lowest level is improved, and the left side and the right bank part of the bottom wall (if the side wall is in the upright position, the left side and Deformation and breakage of the right bank and the left and right side walls) can be prevented. Further, according to claim 5, when stacking a plurality of rearranging shelves whose back walls and left and right side walls are folded, the left and right bank portions of the bottom wall of the lower shelving shelves are exposed. By engaging the concave protrusions provided directly below each of the left and right bank portions of the bottom wall of the other rear panel shelves with the positioning recesses when folded. Thus, the horizontal positioning of the upper arrangement shelf with respect to the lower arrangement shelf can be accurately performed. Therefore, it is possible to increase the working efficiency when stacking the rear racks with the back wall and the left and right side walls folded, and to ensure the stability when the stacking is completed.

  According to the folding and arranging shelf of claim 6, when stacking a plurality of arranging shelves with the back wall and the left and right side walls standing, positioning at the time of standing provided at the upper ends of the left and right side walls of the lower side arranging shelf By engaging the lower convex part provided directly below each of the left and right bank parts of the bottom wall of the other rear panel shelves with the concave part for the lower part, It is possible to accurately position the upper arrangement shelf with respect to the horizontal direction. Therefore, it is possible to increase the working efficiency when stacking the rear shelves with the back wall and the left and right side walls standing, and to ensure the stability when the stacking is completed.

  According to the folding and arranging shelf of claim 7, the bottom of the synthetic resin bottom wall body is provided with a metal bar having a length substantially equal to the length of the bottom wall in the left-right direction. The vicinity of the front edge portion of the wall body is reinforced in strength by a metal bar. In addition, when stacking a plurality of rearranging shelves with the back wall and left and right side walls standing, the left and right ends of the metal bar mounted near the front edge of the bottom wall body of the rear shelf located on the upper stage are It is each supported by the upper end part of the left-right side wall of the other arrangement shelf located in the lower stage. That is, the load when an object is placed on the bottom wall body of the upper sorting shelf is not only supported by the standing back wall and / or the left and right side walls of the lower sorting shelf, but also supported at both ends by the left and right side walls of the lower sorting shelf. Moreover, since it is supported also by the metal bar of an upper arrangement shelf, the bending and deformation | transformation of the bottom wall main body which has mounted the object can be prevented.

  According to the folding and arranging shelf of the eighth aspect, the metal bar can be easily attached to the bottom wall main body by inserting the metal bar into the receiving groove and the tunnel-shaped holding portion of the bottom wall main body.

  According to the folding and arranging shelf of the ninth aspect, the horizontal movement of the metal bar accommodated in the accommodation groove on the bottom surface of the bottom wall body and held by the tunnel-shaped holding portion is restricted by the retaining prevention tool attached to the bottom wall. , It is prevented from coming out of the receiving groove or the tunnel-shaped holding part. Therefore, the metal bar can be fixed to the bottom wall body relatively easily. On the other hand, at the time of disposal, it is possible to easily separate the bottom wall and the metal bar made of synthetic resin by removing the retaining member from the bottom wall and separating the metal bar from the bottom wall body.

  According to the folding and arranging shelf of claim 10, a groove for avoiding interference with the placed article is provided in an inner corner portion of a portion where the bottom wall main body and the trailing edge bank portion are coupled, and the groove is formed on the bottom wall main body. The upper surface and the front surface of the back wall in the standing position are divided to place these two surfaces in a discontinuous orthogonal relationship. Therefore, for example, even when a large number of cornered document articles (for example, postcards) are arranged using a right-angled corner formed by the upper surface of the bottom wall body and the front surface of the standing back wall, Faces the groove for avoiding interference, and its corners do not directly contact the upper surface of the bottom wall body or the front of the back wall, so there is no risk of damaging the corners of the document article during organizing work.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment in which the present invention is embodied in a folding arrangement shelf for postcard arrangement will be described with reference to the drawings.

  As shown in FIG. 1 and FIG. 2, the folding and arranging shelf of the present embodiment is erected along a flat rectangular bottom wall 1 and a rear edge of the bottom wall corresponding to one long side of the bottom wall 1. And a pair of left and right side walls 5 erected along the left and right side edges of the bottom wall corresponding to the two short sides of the bottom wall 1. The bottom wall 1, the back wall 3, and the left and right side walls 5 are all molded products of synthetic resin.

  As shown in FIG. 3, the bottom wall 1 has a rectangular bottom wall body 10 having a horizontally long planar shape as a base. The upper surface 11 of the bottom wall body 10 is generally flat as a mounting surface for articles (postcards), and a plurality of reinforcing ribs 12 extending in the vertical and horizontal directions are formed on the lower surface (back surface) of the bottom wall body 10. . However, a shallow depression 13 having a dish-like cross section is formed on a part of the upper surface 11 of the bottom wall body. This depression 13 is intended to make it easier to insert a finger under the postcard even when the postcard falls down.

  As shown in FIG. 3A, a rear edge bank portion 14 is provided on the upper surface side of the bottom wall body 10 along the rear edge portion of the bottom wall 1, and the left and right side edge portions of the bottom wall 1. A left bank portion 17 and a right bank portion 17 are respectively provided. The protruding height of the rear edge bank portion 14 from the upper surface 11 of the bottom wall body is equal to the thickness of the back wall 3, and the protruding heights of the left and right bank portions 17 from the upper surface 11 of the bottom wall body are the back wall. 3 and the thickness of the side wall 5 are slightly higher.

  The rear edge bank portion 14 is formed with a plurality of hinge engaging recesses 15 (seven in this example) and two interference avoiding recesses 16 on the left and right sides. Each of the hinge engaging recesses 15 is open above and on the front side of the rear edge bank portion 14 and is a part into which the hinge engaging protrusion 33 (see FIG. 4) of the back wall 3 is engaged. The interference avoiding recess 16 is open above and on the back side of the rear edge bank portion 14 and is for avoiding mechanical interference with the side wall 5 when folded.

  Each of the left and right bank portions 17 is formed with two hinge engaging recesses 18 and first and second folding positioning recesses 19 and 20. Each hinge engaging recess 18 opens above and on the inner surface side of each bank portion 17, and is a portion into which the hinge engaging convex portion 53 (see FIG. 5) of the side wall 5 is engaged. The first folding positioning concave portion 19 is located at the rear end corner portion of each of the left and right bank portions 17 (that is, the portion continuing to the left or right end portion of the rear edge side bank portion 14) and at least above the bank portion 17. It is the recessed part opened to. The second folding positioning recess 20 is a recess that is located in the vicinity of the front end of each of the left and right bank portions 17 and that opens above and on the inner surface side of the bank portion 17. The first and second folding positioning recesses 19 and 20 are involved in the horizontal positioning of the sorting shelves when stacking the sorting shelves with the back wall 3 and the side wall 5 folded. The bottom surfaces of the first and second folding positioning recesses 19 and 20 are positioned at the same height, and the height (height from the bottom wall body upper surface 11) is the thickness of the back wall 3. And the thickness of the side wall 5 are substantially equal to each other (see FIG. 2A).

  Further, standing lock engaging recesses 21 are formed in the vicinity of the front end portions of the left and right bank portions 17. Each of the standing lock engaging recesses 21 is located inside the second folding positioning recess 20 and is open on the bottom surface of the recess 20, and has a predetermined depth downward in the vertical direction from the bottom surface. (See FIGS. 3A and 7B).

  As shown in FIGS. 2B and 3A, steps S are formed at the outer corners of the portion where the bottom wall body 10 and the left and right bank portions 17 are joined, and directly below each bank portion 17, respectively. Has been. The step S is partitioned by a horizontal lower surface of the left and right bank portions 17 and a vertical left or right end surface of the bottom wall main body 10 to form a front L-shape, and immediately below each bank portion 17, A stepped space extending in the longitudinal direction is provided. Due to the presence of the step S, the lower surfaces of the left and right bank portions 17 are higher than the lowermost surface of the bottom wall body 10. Each step S immediately below the left and right bank portions 17 is involved in mutual engagement between the upper and lower shelves when stacking the shelves (described later with reference to FIGS. 10 and 11). . Then, immediately below the left and right bank portions 17, first and second bank lower convex portions 22 and 23 are formed so as to fill a part of each step S.

  The first bank lower convex portion 22 is located immediately below the rear end corner portion of each of the left and right bank portions 17 (more specifically, substantially directly below the first folding positioning recess 19), It has a substantially rectangular parallelepiped shape that can be fitted in the vertical direction with respect to the positioning recess 19 during folding. The second bank lower convex portion 23 is located immediately below the front end portion of each of the left and right bank portions 17 (more specifically, substantially directly below the second folding positioning recess 20), and the second folding. It has a substantially rectangular parallelepiped shape capable of coming into contact with the inner wall surface of the hour positioning recess 20. Further, the second bank lower convex portion 23 has a tunnel shape penetrating in the left-right direction. The first and second bank lower convex portions 22 and 23 are involved in the horizontal positioning of the sorting shelf during stacking, and are borne by the left and right bank portions 17 of the bottom wall 1 of the sorting shelf positioned at the bottom when stacking. This is a part for supporting the load to be supported. In addition, as a result of the first and second bank lower convex portions 22 and 23 being provided so as to fill a part of the step S, the lower surface of the bank lower convex portions 22 and 23 and the lower surface of the bottom wall body 10 are surfaces. It is one.

  As shown in FIG. 3A, a groove 24 for avoiding interference with the placed article is formed at the inner corner of the portion where the bottom wall main body 10 and the rear edge bank portion 14 are coupled to each other. It is formed so as to extend along the boundary with the edge bank portion 14. In particular, as shown in FIG. 8, the front surface 14 a of the rear edge bank portion 14 that defines the rear edge side of the groove 24 is in a position slightly retreated from the front surface 31 of the standing back wall 3. That is, the groove 14 has a cross-sectional shape that is not only recessed with respect to the upper surface 11 of the bottom wall body but also recessed with respect to the front surface 31 of the standing back wall. As a result, the groove 14 divides the upper surface 11 of the bottom wall body and the front surface 31 of the standing back wall so that the two surfaces 11 and 31 are in a discontinuous orthogonal relationship.

  As shown in FIG. 3B, a strength reinforcing metal rod is provided on the lower surface side of the bottom wall body 10 and in the vicinity of the front edge of the bottom wall body 10 corresponding to one long side of the bottom wall 1. A metal pipe 25 as a material is attached. The metal pipe 25 has a length almost equal to the length of the bottom wall 1 in the left-right direction. On the lower surface side of the bottom wall main body 10, an accommodation groove 26 for accommodating the metal pipe 25 is secured between two parallel reinforcing ribs 12 extending in the left-right direction. A tunnel-shaped holding portion 27 for holding the metal pipe 25 in the receiving groove 26 is provided in the middle of the receiving groove 26 at three locations near the left end and near the right end. Each tunnel-shaped holding part 27 has a tunnel shape in which the metal pipe 25 can be inserted. Accordingly, the metal pipe 25 is inserted into the receiving groove 26 provided in the bottom wall body from one end to the other end, so that the metal pipe 25 is secured to the bottom wall by the three tunnel-shaped holding portions 27. The main body 10 is held so as not to fall off.

  As shown in FIG. 2B, the two tunnel-shaped holding portions 27 provided near the left end and the right end of the accommodation groove 26 are respectively connected to the left and right second bank lower convex portions 23. . As described above, since the second bank lower convex portion 23 has a tunnel shape penetrating in the left-right direction, each second bank lower convex portion 23 extends the left or right tunnel-shaped holding portion 27 outward. It can also be regarded as an extension of the tunnel-shaped holding part 27. Or it can be said that the 2nd bank lower convex part 23 serves as the tunnel-shaped holding | maintenance part 27 located in the edge part vicinity of the accommodation groove | channel 26. FIG. In the present embodiment, when the metal pipe 25 is mounted in the accommodation groove 26, the left and right ends of the metal pipe 25 are accommodated in the tunnels of the left and right second bank lower protrusions 23, and therefore the left end of the metal pipe 25 and The right end portions are respectively located immediately below the left and right bank portions 17 of the bottom wall.

  As shown in FIG. 3A, a small window-shaped opening 28 is formed in the vicinity of the center of the upper surface 11 of the bottom wall main body and immediately above the central tunnel-shaped holding portion 27. The opening 28 is an opening necessary for mold release when the central tunnel-shaped holding portion 27 and the bottom wall body 10 are integrally molded with the resin. In the present embodiment, a synthetic resin lid 29 is attached to the bottom wall body 10 in order to close the small window-shaped opening 28.

  As shown in FIG. 4, the back wall 3 is a flat plate-like member having a certain thickness, its front surface 31 is formed as a flat surface, and a plurality of reinforcing ribs extending vertically and horizontally on its back surface (back surface). 32 is formed. A plurality of hinge engaging projections 33 (seven in this example) are formed at the lower end of the back wall 3. By engaging these hinge engaging projections 33 with hinge engaging recesses 15 provided on the rear edge bank 14 of the bottom wall, the back wall 3 is connected to the bottom wall so as to be able to fall inward. . That is, in this embodiment, the back wall 3 is connected to the bottom wall 1 so as to be able to fall inward by the hinge engaging recess 15 of the rear wall bank portion 14 of the bottom wall and the hinge engaging convex portion 33 of the back wall 3. A hinge mechanism H1 is configured. By the action of the hinge mechanism H1, the back wall 3 stands upright (FIG. 1 (A)) standing upright with respect to the bottom wall 1 and inwardly tilted position (FIG. 1) that falls in parallel so as to overlap the bottom wall 1. The rotation range of about 90 degrees between (B)) can be switched and arranged.

  Side wall engaging portions 34 that are involved in engagement and connection with the side wall 5 are provided at the left and right ends of the back wall 3, respectively. The side wall engaging portion 34 at each end includes an engaging concave portion 35 that opens to the front side and the end surface side, and a pair of upper and lower engaging projections 36 that are positioned above and below the engaging concave portion 35 and project rearward. have. In addition, a recess 37 that is open in three directions on the upper side, the front side, and the outer end side is cut out at the upper end of each of the left and right ends of the back wall 3. The back wall end upper end recessed portion 37 is combined with the first standing positioning recess 61 described later on the side wall 5 when the back wall 3 and the side wall 5 stand up, and serves as an auxiliary standing positioning recess in the back wall 3. Function.

  As shown in FIG. 1 and FIGS. 5 to 7, the left and right side walls 5 are flat plate-like members having a certain thickness, and the inner surface 51 (surface facing the mating side wall) is formed as a flat surface. A plurality of reinforcing ribs (52, 63 to 66) extending vertically and horizontally are formed on the outer surface side of the side wall. The left side wall 5 and the right side wall 5 are equivalent to each other except that they are symmetrical members that are mirror images of each other. Therefore, the following description will focus on the right side wall 5.

  As shown in FIGS. 5A and 5B, a plurality of hinge engaging convex portions 53 (two in this example) are formed at the lower end portion of the side wall 5. By engaging these hinge engaging projections 53 with hinge engaging recesses 18 provided on the left or right bank portion 17 of the bottom wall 1, the side wall 5 is connected to the bottom wall 1 so as to be able to fall inward. Is done. That is, in this embodiment, the side wall 5 is connected to the bottom wall 1 so as to be able to fall down by the hinge engaging recess 18 of the left and right bank portions 17 of the bottom wall and the hinge engaging convex portion 53 of the side wall 5. A hinge mechanism H2 is configured. By the action of the hinge mechanism H2, each side wall 5 stands upright (FIG. 1 (A)) standing upright with respect to the bottom wall 1 and inwardly tilted position (FIG. 2 (A) ) And (B)), the rotation range of about 90 degrees can be switched and arranged. In this embodiment, the left and right bank portions 17 of the bottom wall are higher than the rear wall side bank portion 14 of the bottom wall, so that the side wall hinge mechanism H2 is higher than the back wall hinge mechanism H1. It is in. Therefore, when the organizer shelf is completely folded, the left and right side walls 5 are overlaid on the back wall 3 that has been overlaid on the bottom wall 1 in advance.

  As shown in FIG. 5A, a back wall engaging portion 54 that is involved in engagement and connection with the back wall 3 is provided at the rear end portion of the side wall 5. The back wall engaging portion 54 includes a projecting portion 55 projecting from the inside of the side wall 5 and an elastic engaging piece 57 positioned slightly in front of the projecting portion 55. A pair of upper and lower engaging holes 56 opened at least forward is formed at the upper end and lower end of the protrusion 55 of the back wall engaging portion. The pair of engagement holes 56 correspond to a pair of upper and lower engagement protrusions 36 in the side wall engagement portion 34 of the back wall 3. The elastic engagement piece 57 of the back wall engaging portion is located at an intermediate height between the pair of upper and lower engaging holes 56, the free end (front end) is directed to the projecting portion 55, and the fixed end (base end) is the front end of the side wall. It is an elastic piece directed to the side, and its free end can be elastically deformed in the inner and outer directions (that is, in the left-right direction) of the side wall 5. At the free end of the elastic engagement piece 57, a triangular prism-shaped engagement convex portion 58 is formed. The triangular prism-shaped engaging convex portion 58 can be engaged with the engaging concave portion 35 in the side wall engaging portion 34 of the back wall 3. The inclined surface located in front of the triangular prism-shaped engagement convex portion 58 functions as a deformation guide surface that induces or induces elastic deformation of the elastic engagement piece 57. A handle portion 59 formed by penetrating a hole in the side wall 5 is provided near the upper end of the side wall 5.

  As shown in FIGS. 5A and 5B, first and second standing-time positioning recesses 61 and 62 are formed at the upper end of the side wall 5. The first standing positioning recess 61 is located at the rear end of the upper end of the side wall and opens above the side wall 5 and on the inner surface side. When the back wall 3 and the side wall 5 stand up, the first standing position positioning recess 61 is combined with the back wall end upper end recess 37 and the other sort shelf is stacked on the sort shelf. The first bank lower convex portion 22 constitutes a concave portion that can be fitted in the vertical direction. The second standing positioning recess 62 is located in the vicinity of the front end of the upper end of the side wall, and is open above and on the inner surface side of the side wall 5. When the back wall 3 and the side wall 5 are erected, the second erection positioning recess 62 is vertically independent of the second bank lower convex part 23 of the other arrangement shelf stacked on the arrangement shelf. A recess that can be fitted in the direction is formed. The first standing positioning recess 61, the back wall end upper end recess 37, and the second standing positioning recess 62 are arranged on the sorting shelf when stacking the sorting shelves on which the back wall 3 and the side wall 5 stand. Involved in the horizontal positioning of the.

  As shown in FIGS. 6A and 6B, an upright lock member 70 is mounted in the vicinity of the front end portion of the side wall 5 so as to be vertically slidable. Specifically, as shown in FIGS. 5B and 6, the first and second vertical ribs 63 and 64 from the front of the side wall 5 and the first and second horizontal ribs 65 and 66 from the bottom are provided. A holding movable region R surrounded and partitioned is secured in the vicinity of the front end portion of the side wall 5, and a standing lock member 70 is attached to the holding movable region R.

  A substantially rectangular parallelepiped holding block 67 is formed immediately below the first horizontal rib 65 that defines the holding movable region R. A through hole 68 for inserting the upright lock member 70 is vertically formed in the holding block 67. The holding block 67 is received in the positioning recess 20 when the left and right bank portions 17 are folded when the side wall 5 stands up and completely closes the concave portion 20, while the side walls 5 are tilted inwardly. It separates from the positioning recess 20 during the second folding. When the side wall 5 stands, the through hole 68 of the holding block 67 seated on the bottom surface of the second folding positioning recess 20 opens the standing lock engaging recess 21 opened on the bottom surface of the second folding positioning recess 20. The holding movable region R and the standing lock engaging recess 21 communicate vertically with each other through the through hole 68 (see FIG. 7B).

  As shown in FIG. 7A, the standing lock member 70 is an integrally molded product of synthetic resin including a vertically long thin plate-like main body 71 and a head portion 72 provided at the upper end of the main body 71. The longitudinal length of the main body 71 of the standing lock member substantially corresponds to the longitudinal length of the through hole 68 of the holding block 67. The body 71 of the standing lock member is provided with an elastic engagement piece 73 in the middle in the height direction on the rear edge side. The elastic engagement piece 73 is an elastic piece with the free end (tip) facing up and the fixed end (base end) facing down, and the free end is elastic in the front-rear direction of the side wall 5 (left-right direction in FIG. 7). Deformable. An engagement protrusion 74 is provided at the free end of the elastic engagement piece 73. The head portion 72 of the standing lock member is formed in a rectangular parallelepiped shape that is thicker than the main body 71, and slightly protrudes from the main body 71 toward the front side (the outer surface side of the side wall 5) (see FIG. 6). The head portion 72 is recessed with a finger hook portion 75 for hooking fingers.

  As shown in FIGS. 5 to 7, an upper engaging convex portion 77 and a lower engaging convex portion 78 are provided on the front surface side of the second vertical rib 64 that defines the holding movable region R for the standing lock member. Is provided. The lower engaging convex portion 78 is substantially at the same height as the first horizontal rib 65, and the lower half of the lower engaging convex portion 78 exists in the through hole 68 of the holding block.

  When the standing lock member 70 is attached to the holding movable region R, the lower end portion of the main body 71 enters the through hole 68 of the holding block, and the front end of the head portion 72 is in contact with the first vertical rib 63 and is elastic. Since the engagement protrusion 74 of the joining piece 73 contacts the second vertical rib 64, the posture of the standing lock member 70 in the front-rear direction can be stabilized. Then, as shown in FIGS. 6A and 7B, the engagement protrusion 74 of the elastic engagement piece 73 of the standing lock member rides on the upper engagement convex portion 77 of the second vertical rib 64. Thus, the standing lock member 70 is disposed at the upper limit position where the head portion 72 substantially contacts the second horizontal rib 66 and the lower end portion of the main body 71 is accommodated in the through hole 68 of the holding block. At this upper limit position, the lower end portion of the standing lock member 70 is outside (above) the standing lock engaging recess 21 and is not engaged with the recess 21, so the front end of the side wall 5 is the left and right banks of the bottom wall 1. The part 17 is not locked. In this sense, the upper limit position of the standing lock member 70 shown in FIGS. 6A and 7B is referred to as an “unlock position”.

  When a finger is placed on the head portion finger hooking portion 75 of the standing lock member 70 in the unlocked position and pressed down strongly, the engaging protrusion 74 of the elastic engaging piece 73 gets over the upper and lower engaging convex portions 77 and 78. The standing lock member 70 is switched to the lower limit position shown in FIGS. 6 (B) and 7 (C). In this lower limit position, the engagement protrusion 74 of the elastic engagement piece is positioned below the lower engagement projection 78, and the head portion 72 of the standing lock member 70 is moved to the first horizontal rib 65 (or the upper surface of the holding block 67). ) To restrain the further downward movement of the standing lock member 70. Further, the lower end portion of the upright lock member 70 enters deeply into the upright lock engagement recess 21 to establish an engagement relationship with the lower recess 21. As a result, the front end portion of the side wall 5 is locked so as not to fall inward with respect to the left and right bank portions 17 of the bottom wall 1, and the side wall 5 is locked in the standing position. In this sense, the lower limit position of the standing lock member 70 shown in FIGS. 6B and 7C is referred to as a “lock position”.

  It is to be noted that a finger is placed on the head portion finger hooking portion 75 of the standing lock member 70 in the locked position, and the engaging projection 74 has the upper and lower engaging convex portions 77 and 78 against the elasticity of the elastic engaging piece 73. By pulling up so strongly that it can get over, the lower end portion of the standing lock member 70 is detached from the engaging recess 21 for standing lock, and the standing lock member 70 is returned to the unlock position.

[Operation and Effect of Embodiment]
Next, the usage method and advantages of the folding and arranging shelf of the present embodiment will be described.

  The folding and arranging shelf is used in a state where the back wall 3 and the left and right side walls 5 are erected as shown in FIG. In order to fold this, first, the engagement between the side wall engaging portion 34 at the left and right ends of the back wall and the back wall engaging portion 54 of each side wall 5 is released, and the back wall 3 is moved to the bottom wall as shown in FIG. Invert to 1 above. Subsequently, the side wall 5 in which the standing lock member 70 is disposed at the unlock position is tilted inward, and the back wall is tilted in advance by switching to the inward position as shown in FIGS. 2 (A) and 2 (B). The left and right side walls 5 are overlapped on 3. At this time, since the back wall engaging portion 54 of each side wall 5 is received by the left and right interference avoiding recesses 16 of the rear edge bank portion 14 of the bottom wall 1 (see FIG. 2B), each side wall 5 is bottomed. It can be arranged parallel to the wall 1 and the back wall 3. When the folding shown in FIG. 2 is completed, the plane size of the arranging shelf can be limited to the plane size of the bottom wall 1, so that the occupied area when stored in a warehouse or the like can be made smaller than in the conventional example.

  In order to make the organized shelf folded as shown in FIG. 2 into a usable state, first, the left and right side walls 5 are switched from the inward position to the standing position. By this switching, the left and right side walls 5 stand upright on the left and right bank portions 17 of the bottom wall as shown in FIG. 1B, and the side walls 5 with respect to the second folding positioning recesses 20 of the left and right bank portions 17. The holding block 67 is inserted (see FIG. 7B). Subsequently, the standing lock member 70 of each side wall 5 is vertically slid from the unlocked position to the locked position (see FIGS. 6B and 7C), and the lower end portion of the standing lock member 70 is moved to the left and right bank portions 17. Engage in the standing lock engaging recess 21. By this engagement, the front end portions of the side walls 5 cannot be tilted inward with respect to the left and right bank portions 17 of the bottom wall via the standing lock members 70.

  Further, the back wall 3 is switched from the inward position to the standing position. In the process of raising the back wall 3, a part of the side wall engaging portion 34 of the back wall presses the engaging convex portion 58 of the elastic engaging piece 57 of each side wall 5, and the elastic engaging piece 57 is elasticated outward. Deform. Then, when the side wall engaging portion 34 of the back wall gets over the engaging convex portion 58 and the back wall 3 reaches the standing position, the pair of engaging protrusions 36 in the side wall engaging portion 34 of the back wall become the back wall of the side wall. The engaging convex portion 58 of the elastic engaging piece 57 that is engaged with the pair of engaging holes 56 in the engaging portion 54 and elastically returned to the engaging concave portion 35 of the side wall engaging portion 34 of the back wall is engaged. A part of the side wall engaging portion 34 of the back wall is disposed between the engaging convex portion 58 and the protruding portion 55. Thus, the mutual engagement between the left and right side wall engaging portions 34 of the back wall 3 and the back wall engaging portions 54 of the left and right side walls 5 is completed.

  According to this embodiment, the standing back wall 3 and the left and right side walls 5 support each other in the standing position based on the mutual engagement of the side wall engaging portion 34 and the back wall engaging portion 54. Particularly in each side wall 5, the rear end portion of each side wall 5 is connected to the back by engaging the back wall engaging portion 54 provided in the vicinity of the rear end portion with the side wall engaging portion 34 of the standing back wall 3. In addition to being supported by the wall 3, the front end portion of each side wall 5 is supported by the upright lock member 70 so as not to fall inward with respect to the left and right bank portions 17 of the bottom wall. That is, each side wall 5 is supported at two points at both front and rear ends thereof. For this reason, even if an external force acts on the side wall 5, the side wall 5 does not fall down. Since each side wall 5 is locked at the standing position by at least the standing lock member 70, the side wall 5 is not wobbled due to an external force, or the side wall 5 does not fall down unexpectedly. In the above description, it has been described that the standing lock member 70 is switched to the locked position prior to the standing wall 3 standing operation. However, the procedure between the standing locking member 70 switching operation and the standing wall 3 standing operation is performed before and after. Needless to say, it doesn't change anything.

  The elastic engagement pieces 57 are deformed outward with fingers or the like, and the engagement convex portions 58 of the elastic engagement pieces 57 are disengaged from the engagement concave portions 35 of the side wall engagement portions 34. The engagement with the side wall 5 is released, and the back wall 3 can be tilted inward. Further, the standing lock is released by switching the standing lock member 70 of each side wall 5 from the locked position to the unlocked position (see FIGS. 6A and 7B), and the side wall 5 can be tilted inward. become.

  According to the organizing shelf of this embodiment, as shown in FIG. 10A, a plurality of organizing shelves with the back wall 3 and the left and right side walls 5 standing can be stacked and used. When stacking, as shown in FIG. 10 (B), the first standing positioning recess 61 and the back wall end upper end recess 37 are combined in the vicinity of the upper rear end of each side wall 5 of the lower arrangement shelf. The first bank lower convex portion 22 of the upper-stage sorting shelf is fitted to the standing positioning recesses (61, 37), and the second standing-up position is located near the upper front end of each side wall 5 of the lower-stage sorting shelf. The second bank lower convex portion 23 of the upper arrangement shelf is fitted into the positioning concave portion 62. By these uneven fitting, the upper arrangement shelf is accurately positioned in the horizontal direction (that is, the front-rear direction and the left-right direction) with respect to the lower arrangement shelf.

  At the time of stacking in FIG. 10 (A), the left and right steps S of the bottom wall 1 of the upper organizer shelf are stacked on the left and right side walls 5 of the lower organizer shelf, respectively. The lower surfaces of the left and right bank portions 17 of the upper arrangement shelf come into contact with the end surface. As a result, the load on the upper sorting shelf is transmitted to the left and right side walls 5 of the lower sorting shelf, and all the vertical loads supported by the left and right side walls 5 on the second and higher sorting shelves from the bottom are the left and right side walls 5 of the lower sorting shelf. Spill over. However, in the present embodiment, the load borne by each side wall 5 of the lowermost sorting shelf and the corresponding left and right bank portions 17 is the first and second bank lower convex portions 22 immediately below the left and right bank portions 17 of the bottom wall 1. , 23 supports. Therefore, it is possible to prevent as much as possible that the right and left bank portions 17 and the side wall 5 immediately above the left and right bank portions 17 are deformed or damaged due to the concentration of the vertical load.

  Further, when stacking in FIG. 10 (A), as shown in FIG. 9, the second bank lower convex portion 23 of the upper leveling shelf is fitted to the second standing positioning concave portion 62 of each side wall 5 of the lower leveling shelf. As a result, the left and right end portions of the metal pipe 25 of the upper arrangement shelf are indirectly supported by the second standing positioning recesses 62 located at the upper ends of the left and right side walls 5 of the lower arrangement shelf. That is, the load when an object is placed on the bottom wall main body 10 of the upper arrangement shelf is not only supported by the standing back wall 3 and the left and right side walls 5 of the lower arrangement shelf, but both ends are supported by the left and right side walls 5 of the lower arrangement shelf. It is supported also by the metal pipe 25 of the supported upper arrangement shelf. Thus, the presence of the metal pipe 25 can prevent the bottom wall main body 10 of the upper arrangement shelf when the object is placed from being bent or deformed.

  According to the sorting shelf of this embodiment, as shown in FIG. 11 (A), a plurality of sorting shelves in which the back wall 3 and the left and right side walls 5 are folded can be stacked and stored. The first and second folding positioning recesses 19 and 20 provided on the left and right bank portions 17 of the bottom wall 1 of each sorting shelf are hidden under the side walls 5 when the side walls 5 are in the upright position. However, when the side wall 5 is in the inward position, the left and right bank portions 17 are exposed. Therefore, when stacking, as shown in FIG. 11B, with respect to the first folding positioning recesses 19 exposed at the respective rear end corner portions of the left and right bank portions 17 of the bottom wall 1 of the lower-stage sorting shelf. The first bank lower convex part 22 of the upper stage shelves is fitted, and the second folding positioning recesses 20 exposed in the vicinity of the front end portions of the left and right bank parts 17 of the bottom wall 1 of the lower stage shelves Then, the second bank lower convex part 23 of the upper stage arranging shelf is engaged, and the upright outer wall surface of the convex part 23 is brought into contact with the upright inner wall surface of the concave part 20. By these concave / convex fitting and concave / convex engagement (mutual abutment between upright inner and outer wall surfaces), the upper arrangement rack is accurately positioned with respect to the lower arrangement rack in the horizontal direction (that is, the front-rear direction and the left-right direction).

  At the time of stacking in FIG. 11A, the left and right steps S of the bottom wall 1 of the upper arrangement shelf are stacked on the left and right banks 17 of the lower arrangement shelf, respectively, and the left and right banks 17 of the lower arrangement shelf are stacked. The lower surfaces of the left and right bank portions 17 of the upper stage shelves abut on the upper surface of. As a result, the load of the upper shelves is transmitted to the left and right banks 17 of the lower shelves, and all the vertical loads supported by the left and right banks 17 of the shelves that are the second and higher from the bottom are the left and right of the lower shelves. Ripple to bank part 17. However, in this embodiment, the first and second bank lower convex portions 22 and 23 directly below the left and right bank portions 17 of the bottom wall 1 support the load borne by the left and right bank portions 17 of the lowermost sorting shelf. Therefore, it is possible to prevent as much as possible that the left and right bank portions 17 of the lowermost shelves are deformed or damaged due to the concentration of the vertical load.

  Note that the head portion 72 of the standing lock member 70 on the side wall 5 of each sorting shelf is always within the holding movable region R, and the outer end surface of the head portion 72 has three ribs 3 and 64 surrounding the holding movable region R. And 65 does not protrude from the outer end face. Therefore, even when stacked as shown in FIG. 11A, the standing lock member 70 of the lower arrangement shelf does not interfere with the lower surface of the bottom wall body 10 of the upper arrangement shelf.

  Furthermore, according to the present embodiment, the groove 24 for avoiding interference with the placed article is provided at the inner corner of the portion where the bottom wall main body 10 and the trailing edge side bank portion 14 are coupled. The upper surface 11 of the main body and the front surface 31 of the standing back wall are divided to place these two surfaces 11 and 31 in a discontinuous orthogonal relationship (see FIG. 8). Therefore, even when a large number of cornered document articles (for example, postcards) are erected and arranged using the right-angled corner formed by the bottom wall main body upper surface 11 and the back wall front surface 31, the corner portions of the respective document articles are arranged. Faces the groove 24 for avoiding interference, and the corners thereof do not directly contact the top surface 11 of the bottom wall body or the front surface 31 of the back wall.

[Other Embodiments]
Other embodiments other than the above embodiment and other examples will be briefly described.

  You may provide the anti-slip | slip means at the time of standing a postcard on the upper surface of the bottom wall main body 10. FIG. For example, as shown in FIG. 12A, for example, a rubber band-shaped anti-slip member 81 may be attached to the upper surface of the bottom wall body 10. Alternatively, as shown in FIG. 12 (B), an embossed portion 82 of the upper surface of the bottom wall main body 10 may be subjected to embossing so that the embossment functions as a non-slip.

  A structure for preventing the metal pipe 25 from coming off may be added to the folding and arranging shelf shown in FIGS. FIG. 13 shows the first plan, and FIG. 14 shows the second plan.

  As shown in FIGS. 13A and 13B, the width direction of the lid 29 on the lower surface side of the lid 29 (that is, the side facing the metal pipe 25) for closing the opening 28 on the upper surface of the bottom wall body 10. That is, a plurality of protrusions 83 and 84 (five in the figure) extending in the direction perpendicular to the metal pipe 25 when the cover is attached to the bottom wall body are formed. Of these five ridges, the four ridges 84 excluding the ridge 83 located at the center are respectively formed with recesses 85 having bay surfaces corresponding to the outer peripheral surface shape of the metal pipe 25. On the other hand, the ridge 83 located at the center is not formed with the concave portion 85 at all, and the central portion of the ridge 83 is relative to the concave portions 85 of the other four ridges 84. It shall be the part which protruded. As shown in FIG. 13C, a concavity is provided in a part of the metal pipe 25 (in the case of FIG. 13C, the central portion in the longitudinal direction of the metal pipe 25) to provide an annular recess 25a. When the metal pipe 25 and the lid 29 are attached to the bottom wall body 10, the concave portions 85 of the four protrusions are brought into contact with the outer peripheral surface of the metal pipe 25, and the central portion of the protrusion 83 positioned at the center is made of metal. Engage with the annular recess 25a of the pipe. By this engagement, the movement of the metal pipe 25 in the left-right direction can be restricted, and the metal pipe 25 can be prevented from coming out of the housing groove 26 and the tunnel-shaped holding portion 27. In the example of FIG. 13, the lid 29 functions as a retaining device, and a retaining structure is constructed by the lid 29 and the annular recess 25 a of the metal pipe.

  As shown in FIGS. 14A to 14D, even if the fixing cap 90 is attached to the second bank lower convex portion 23 (also serving as the tunnel-shaped holding portion 27) located at the end of the bottom wall body 10. Good. That is, the fixed cap 90 is a synthetic resin molded product having a pair of slide fitting convex portions 91 and a pair of engaging projections 92 on both sides thereof. On the other hand, the left and right bank portions 17 of the bottom wall 1 are formed with a pair of slide fitting concave portions 93 corresponding to both slide fitting convex portions 91 of the fixed cap, and the second bank lower convex portion 23 has a fixed cap. A pair of engaging recesses 94 corresponding to the two engaging protrusions 92 are cut out. Then, the slide fitting protrusions 91 and the engagement protrusions 92 of the fixing cap 90 are respectively slide fitted and engaged with the slide fitting recesses 93 and the engagement recesses 94 on the bottom wall side, As shown in FIG. 14D, the tunnel-shaped opening end of the second bank lower convex portion 23 is closed with a fixing cap 90. By the blockage by the fixing cap 90, the movement of the metal pipe 25 in the left-right direction can be restricted, and the metal pipe 25 can be prevented from coming out of the housing groove 26 and the tunnel-shaped holding portion 27. In the example of FIG. 14, the fixing cap 90 functions as a retaining prevention tool, and a retaining prevention structure is constructed by the fixing cap 90, the slide fitting recess 93 and the engagement recess 94 on the bottom wall side.

  FIGS. 15 to 17 show an arrangement shelf (hereinafter referred to as “another arrangement shelf”) that can be folded by inclining the back wall 3 after the left and right side walls 5 are first inclined on the bottom wall 1. Show. 15 to 17, the same reference numerals are assigned to the components having the same meaning as the components of the folding and arranging shelf of FIGS. 1 to 14, thereby avoiding redundant description.

  As shown in FIG. 15, in another arrangement shelf, the protruding height of the rear edge bank portion 14 from the upper surface of the bottom wall body 10 is higher than the protruding height of the left and right bank portions 17 from the upper surface of the bottom wall body 10. As a result, the hinge mechanism H1 that connects the back wall 3 to the rear edge bank portion 14 of the bottom wall is more than the hinge mechanism H2 that connects the left and right side walls 5 to the left and right bank portions 17 of the bottom wall. Is in a high position. Therefore, after the left and right side walls 5 are turned down on the bottom wall 1 as shown in FIG. 16, the back wall 3 is turned down so that the back wall 3 is placed on the folded side wall 5 as shown in FIG. It can fold up so that it may overlap, and the plane size at the time of folding can be limited to the plane size of bottom wall 1.

  As shown in FIGS. 15 and 16, a lock mechanism 101 for locking the back wall 3 and the side wall 5 to the upright position based on mutual engagement is provided at the inner corner of the upright back wall 3 and the side wall 5. Each side wall 5 is provided with a lock release mechanism 102 for releasing the lock state of the lock mechanism 101. The lock mechanism 101 and the lock release mechanism 102 are substantially the same as the lock mechanism and the lock release mechanism disclosed in Japanese Patent Application Laid-Open No. 2004-292030, so refer to the publication for details. Incidentally, the lock release mechanism 102 is composed of an operation member 103 and an extrusion rod 104 that are in a cam-follower relationship, and the extrusion rod 104 according to a single pressing operation (one action) of the operation member 103. Based on the horizontal movement, the lock state of the lock mechanism 101 is released. The standing lock mechanism for the back wall 3 having the same structure or the same structure as the standing lock mechanism for the side wall 5 (the mechanism comprising the standing lock engaging recess 21 and the standing lock member 70) in the folding and arranging shelf of FIGS. (Indicated by a broken line 105 in FIG. 15) may be provided on the back wall 3 and the rear edge bank portion 14 of another example of the sorting shelf.

  In another example of the arrangement shelf, similar to the folding arrangement shelf in FIGS. 1 to 14, there is a step at the outer corner portion of the portion where the bottom wall body 10 and the left and right bank portions 17 are joined and directly below each of the left and right bank portions 17. S is provided, and further, a first bank lower convex portion 22 and a second bank lower convex portion 23 are provided so as to fill a part of the step S. As shown in FIG. 17, at the left and right ends of the rear edge bank portion 14 of the bottom wall 1, recessed portions for positioning at the time of folding exposed at the upper portion of the rear edge bank portion 14 when the back wall 3 is disposed in the inward position. 19 is provided in the vicinity of the front end portion of each of the left and right bank portions 17 of the bottom wall 1, and a recessed portion 20 for positioning at the time of folding that is exposed to the upper portion of each bank portion 17 when the side wall 5 is disposed at the inward position. It has been. Therefore, when stacking a plurality of other example sorting shelves in which the back wall 3 and the left and right side walls 5 are folded, the folding positioning recesses 19 exposed above the bank portions 14 and 17 of the lower sorting shelves, By engaging the first and second bank lower convex portions 22 and 23 on the bottom wall of the upper arrangement shelf with respect to 20, the horizontal arrangement of the upper arrangement shelf with respect to the lower arrangement shelf can be accurately performed. As shown in FIGS. 15 and 16, the upper end of the left and right ends of the back wall 3 is provided with a back wall end upper end recess 37 as a positioning recess when standing, At the front end position, a standing positioning recess 62 is provided. Therefore, when stacking a plurality of other example sorting shelves in which the back wall 3 and the left and right side walls 5 stand up, the standing positioning positioning recesses 37 provided at the upper ends of the back wall 3 and the left and right side walls 5 of the lower order sorting shelf. , 62 are engaged with the first and second bank lower protrusions 22 and 23 of the bottom wall of the upper arrangement shelf, respectively, so that the upper arrangement shelf can be accurately positioned in the horizontal direction with respect to the lower arrangement shelf. .

  In another example of the arrangement shelf, the buffering avoidance groove 14, the metal pipe 25, the pipe accommodation groove 26, the tunnel-shaped holding portion 27, the anti-slip means (81, 82) Needless to say, a structure such as a metal pipe retaining prevention structure (25a, 83-85, 90-94) can be employed.

An example of a folding arrangement shelf is shown, (A) is a perspective view showing the folding arrangement shelf when the back wall and the left and right side walls are raised, and (B) is a perspective view showing the folding arrangement shelf when the back wall is tilted inward. Figure. (A) is a perspective view showing a folding arrangement shelf when the back wall and the left and right side walls are tilted inward, and (B) is a partial perspective view when the right end of the arrangement shelf in (A) is looked up from diagonally downward. (A) is a perspective view which shows the upper surface side of a bottom wall, (B) is a perspective view which shows the lower surface side of a bottom wall. (A) is a perspective view which shows the front side of a back wall, (B) is a perspective view which shows the back side of a back wall. (A) is a perspective view which shows the inner surface side of a right side wall, (B) is a perspective view which shows the outer surface side of a right side wall. It is a perspective view which shows the standing right side wall and its vicinity, (A) is a perspective view of a side wall unlocked state, (B) is a perspective view of a side wall locked state. (A) is a view showing a standing lock member, (B) is a side view showing the front end portion of the right side wall in the locked state and a part of the vicinity thereof, and (C) is a front end portion of the right side wall in the unlocked state The side view which fractures | ruptures and shows the vicinity partially. The perspective view which fractures | ruptures and shows the inner corner | angular part of the site | part which a bottom wall main body and a rear edge side bank part couple | bond, and its vicinity. The perspective view which fractures | ruptures and shows the engagement site | part of the upper part of a left side wall, and the metal pipe of a bottom wall main body, and its vicinity. (A) is a perspective view which shows the state which piled up the arrangement | stacking shelf which stood up the back wall and the right-and-left side wall, and (B) is a partial perspective view when the upper arrangement shelf is floated slightly from the lower arrangement shelf. (A) is a perspective view which shows the state which piled up the arrangement | stacking shelf which made the back wall and the right-and-left side wall fall down in two steps, (B) is a partial perspective view when the upper arrangement shelf is floated slightly from the lower arrangement shelf. (A) And (B) is a perspective view of the folding rearrangement shelf provided with the anti-slip | skid means. An example of a metal pipe retaining prevention structure is shown, (A) and (B) are perspective views showing the upper surface side and the lower surface side of the lid as a retaining device, respectively, (C) is the relationship between the lid and the metal pipe. FIG. An example of a metal pipe retaining prevention structure is shown, (A) and (B) are perspective views showing a fixing cap as a retaining stopper, and (C) and (D) are fixed to the end of the bottom wall body. The fragmentary perspective view which shows a mode that a cap is mounted | worn. The perspective view which shows another example of a folding rearrangement shelf, and shows a folding rearrangement shelf when a back wall and right and left side walls are made to stand. The perspective view which shows the middle in which the right-and-left side wall of the folding rearrangement shelf of FIG. The fragmentary perspective view which expands and shows the one end part vicinity of the sorting shelf when the right-and-left side wall and back wall of the folding sorting shelf of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Bottom wall, 3 ... Back wall, 5 ... Side wall, 10 ... Bottom wall main body, 11 ... Upper surface of bottom wall main body, 14 ... Rear edge side bank part, 17 ... Left side and right side bank part, 19 ... At the time of 1st folding Positioning recess 20, second folding positioning recess 21, standing lock engagement recess 22, first bank lower projection 23, second bank lower projection 24, interference avoidance Groove, 25 ... Metal pipe 25 (metal bar), 26 ... Accommodating groove, 27 ... Tunnel-shaped holding part, 29 ... Lid (prevention prevention tool of FIG. 13), 31 ... Front face of back wall, 34 ... Back wall Side wall engaging portion, 54 ... Back wall engaging portion of the side wall, 61 ... First standing positioning recess, 62 ... Second standing positioning recess, 70 ... Standing lock member, 90 ... Fixing cap (Fig. 14) H1 ... back wall hinge mechanism, H2 ... side wall hinge mechanism, S ... step.

Claims (10)

A flat rectangular bottom wall, a back wall, and a pair of left and right side walls,
The back wall is connected to a rear side edge of the bottom wall via a hinge mechanism so as to be able to fall inward, and the left and right side walls are connected to the left and right side edges of the bottom wall. A folding arrangement shelf that is connected to a bottom wall via a hinge mechanism so as to fall inward. A bottom wall, a back wall, and a pair of left and right side walls;
The bottom wall is provided along a planar rectangular bottom wall main body, a rear edge bank provided along a rear edge of the bottom wall main body, and right and left side edges of the bottom wall main body. Left bank and right bank
The back wall can be switched between a standing position that stands up with respect to the bottom wall and an inclining position that falls substantially parallel to the bottom wall via a hinge mechanism with respect to the bank on the rear edge side of the bottom wall. Connected to
The left and right side walls are respectively located between an upright position that stands up with respect to the bottom wall via a hinge mechanism with respect to the left and right banks of the bottom wall, and an inward position that falls down substantially parallel to the bottom wall. Folding arrangement shelf characterized by being connected so that switching arrangement is possible. The protruding height of the trailing edge bank portion from the upper surface of the bottom wall body is set to be equal to or less than the thickness of the back wall, and the left and right bank portions protrude from the upper surface of the bottom wall body. The height is set higher than the protruding height of the trailing edge bank portion,
The hinge mechanism that connects the left and right side walls to the left and right bank portions of the bottom wall is higher than the hinge mechanism that connects the back wall to the rear edge bank portion of the bottom wall. The folding arrangement shelf of Claim 2 characterized by these. Each of the left and right side walls is vertically slidable in the vicinity of the rear end of each side wall and a back wall engaging part provided in the vicinity of the rear end of each side wall to be engaged with the end of the back wall when standing. An installed standing lock member,
In the vicinity of the front end of the left wall and the right bank of the bottom wall, there are respectively provided standing recesses for standing locks so as to face the standing lock members on the side walls arranged in the standing position,
The standing lock member has a lock position in which a part of the standing lock member engages with the engaging recess for standing lock to lock the side wall in the standing position, and a standing position of the side wall by separating from the engaging recess for standing lock. 4. The folding and arranging shelf according to claim 2, wherein the folding and arranging shelf can be switched and arranged between an unlocking position and a unlocking position. Steps (S) are provided at the outer corners of the portion where the bottom wall main body and the left or right bank portion are joined and immediately below each of the left and right bank portions,
Immediately below each of the left and right bank portions is a load that is involved in the horizontal positioning of the sorting shelves during stacking and that is borne by the left or right bank portion of the bottom wall of the shelving shelves positioned at the bottom when stacking A bank-bottom convex portion for supporting the ridge is provided so as to fill part of the step (S),
Each of the left and right bank portions of the bottom wall is exposed to an upper portion of each bank portion when the corresponding side wall is disposed at the inward position, and the rear shelf and the left and right side walls are folded. A folding positioning concave portion is provided to engage with the lower convex portion of the other sorting shelf located at the upper stage of the sorting shelf when stacking to position the other sorting shelf in the horizontal direction. The folding arrangement shelf according to claim 2, 3 or 4, characterized by the above.   The upper end of each of the left and right side walls engages with the lower convex part of the bank of the other sorting shelf positioned at the top of the sorting shelf when stacking the sorting shelves with the back wall and the left and right side walls standing. 6. The folding arrangement shelf according to claim 5, further comprising a standing-time positioning concave portion for horizontally positioning another arrangement shelf. The bottom wall, the back wall, and the left and right side walls are synthetic resin molded products, and a metal bar having a length substantially equal to the length in the left-right direction of the bottom wall is mounted near the front edge of the bottom wall body. And
The left end and the right end of the metal bar are positioned directly below the left and right banks of the bottom wall, respectively, so that the left end of the metal bar is stacked when the rear and left and right side walls stand up. The folding arrangement according to any one of claims 2 to 6, wherein the right and left ends are respectively supported by upper ends of left and right side walls of other arrangement shelves located at the lower stage of the arrangement shelf. shelf.   On the lower surface side of the bottom wall main body, an accommodation groove for accommodating the metal bar is provided in parallel with the front edge of the bottom wall main body, and the metal bar is held in the accommodation groove. The folding organizing shelf according to claim 7, wherein a tunnel-shaped holding portion is provided.   The bottom wall is detachably attached with a stopper for preventing the metal bar from moving out of the receiving groove or the tunnel-shaped holding part by restricting the movement of the metal bar in the left-right direction. The folding and arranging shelf according to claim 8, wherein   A groove for avoiding interference with the placed article extends along the boundary between the bottom wall main body and the rear edge bank portion at the inner corner of the portion where the bottom wall main body and the rear edge bank portion are combined. 10. The groove according to claim 2, wherein the groove divides the upper surface of the bottom wall body and the front surface of the back wall in the upright position so that these two surfaces are in a discontinuous orthogonal relationship. The folding organizer according to one item.

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