Assembled shelves

Abstract

To easily align when a plurality of shelf units are connected.SOLUTION: A second shelf unit (20) is laminated on a first shelf unit (10) to constitute an assembly shelf. On each of an upper surface of at least one first lateral frame material (11a) provided at an upper part of the first shelf unit and a lower surface of at least one second lateral frame material (21a) provided at a lower part of the second shelf unit, engagement structures (13, 23) engaging with each other are provided.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an assembly shelf in which a plurality of shelf units are connected together. [Background technology]

[0002] For example, Patent Document 1 discloses an assembly shelf constructed by connecting multiple shelf units. This prior art assembly shelf is assembled by stacking an upper shelf unit on a lower shelf unit and connecting the side frames of each shelf unit. The shelf units are connected by aligning the connecting holes in the side frame of the lower shelf unit with the embedded nuts in the side frame of the upper shelf unit, inserting a connecting bolt from below the connecting hole, screwing its tip into the embedded nut, and tightening the bolts to secure them in place. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3128281 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to connect upper and lower shelf units, the upper and lower shelf units must be accurately aligned during assembly. However, this alignment takes time, which limits the efficiency of assembling an assembly shelf. One aspect of the present disclosure aims to provide an assembly shelf that allows for efficient alignment for connecting multiple shelf units. [Means for solving the problem]

[0005] In order to solve the above problems, an assembly shelf according to one embodiment of the present disclosure comprises a first shelf unit having a plurality of first vertical frame members extending in the vertical direction and a plurality of first horizontal frame members extending in the horizontal direction, and a second shelf unit having a plurality of second vertical frame members extending in the vertical direction and a plurality of second horizontal frame members extending in the horizontal direction, and is constructed by stacking the second shelf unit on top of the first shelf unit, and the upper surface of at least one of the first horizontal frame members provided on the upper part of the first shelf unit and the lower surface of at least one of the second horizontal frame members provided on the lower part of the second shelf unit are each provided with an interlocking structure that interlocks with each other. [Effects of the Invention]

[0006] According to one aspect of the present disclosure, alignment can be easily performed when connecting multiple shelf units. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of an assembly shelf according to an embodiment. [Figure 2] 10A to 10C are diagrams for explaining the assembly process of the assembly shelf according to the embodiment. [Figure 3] FIG. 4 is a partial enlarged view showing the interlocking structure of the assembly shelf according to the embodiment. [Figure 4] FIG. 10 is a perspective view showing an interlocking structure in a second shelf unit of the assembly shelf according to the embodiment. [Figure 5] FIG. 2 is a perspective view showing an interlocking structure in a first shelf unit of the assembly shelf according to the embodiment. [Figure 6] FIG. 10 is a rear view showing the interlocking structure of the first shelf unit of the assembly shelf according to the first modification. [Figure 7] FIG. 10 is a cross-sectional view illustrating the interlocking structure of the assembly shelf according to Modification 2. DETAILED DESCRIPTION OF THE INVENTION

[0008] [Embodiment] An embodiment of the present disclosure will be described in detail below. In this embodiment, an assembly shelf is illustrated that is installed in a factory or warehouse and can hold items such as raw materials, semi-finished products, finished products, jigs, and tools that are transported by an automatic transport system for temporary or long-term storage.

[0009] In order to enable the storage of a large number of items, such assembly shelves are usually configured to allow items to be placed at high positions that are normally inaccessible to workers. However, the application of the present disclosure is not necessarily limited to assembly shelves installed in factories or warehouses, or assembly shelves on which items are placed by an automatic conveyance system.

[0010] <Overview of the assembly shelf> FIG. 1 is a perspective view showing an assembly shelf 101 according to this embodiment, viewed obliquely from above on the front side of the assembly shelf 101. Here, the assembly shelf 101 is configured, as an example, by stacking shelf units 1 vertically (in the Z-axis direction) in four rows (R1 to R4). Furthermore, the assembly shelf 101 is configured by combining shelf units 1 horizontally (parallel to the X-axis) in six rows (C1 to C6). Thus, FIG. 1 shows an example of an assembly shelf in which shelf units 1 are combined in six rows horizontally and four rows vertically, but the application of the present disclosure is not limited to this configuration.

[0011] Each shelf unit 1 is fitted with a plurality of shelf boards 201 on which items 301 to be stored on the assembly shelf 101 are placed. In Fig. 1, a standardized storage case for storing semi-finished products or the like is shown as an example of the items 301. Storage cases called FOUPs (Front-Opening Unified Pods) and FOSBs (Front Open Shipping Boxes) are examples of such standardized storage cases.

[0012] In FIG. 1, in order to clearly show the frame structure of the shelving unit 1, the shelf boards 201 attached to the first (R1) and second (R2) shelf units 1 are not shown. Here, the shelf board 201 refers to a support material capable of holding individual items 301 to be stored. The most common shape of a shelf board is a flat plate, but the shelf board in this application is not limited to a flat plate shape. FIG. 1 shows a comb-shaped shelf board 201 as an example of the items 301, which supports three sides of the approximately rectangular bottom of a standardized storage case so that multiple items 301 (storage cases) can be placed on it.

[0013] In this application, each direction is defined as follows: In the XYZ coordinate system, the X-axis and Y-axis are parallel to the horizontal plane, the Z-axis is parallel to the vertical line, and the positive direction of the Z-axis is defined as pointing upward. Therefore, the Z-axis direction is also the up-down direction. Assuming that the assembly shelf 101 is installed on a horizontal floor, the Z-axis direction is the vertical direction of the assembly shelf 101, and the X-axis direction is the longitudinal direction of the assembly shelf 101 on the horizontal plane, and is also referred to as the horizontal direction.

[0014] The positive Y-axis direction is the direction from the front of the installed assembly shelf 101 to the back. In other words, the positive Y-axis direction is the direction in which the item 301 moves when the item 301 is placed on the shelf board 201. The negative Y-axis direction side of the assembly shelf 101 is the front side of the assembly shelf 101, and the positive Y-axis direction side is the rear side of the assembly shelf 101. Therefore, the positive X-axis direction is to the right when facing the installed assembly shelf 101 from the front.

[0015] <Shelf unit frame structure> 2 shows a perspective view of the assembly shelf 101 seen from diagonally above the rear side thereof to explain the assembly process of the assembly shelf 101. FIG. 2 shows a situation in which another shelf unit 1 is stacked on top of one shelf unit 1 of the assembly shelf 101.

[0016] For convenience in the following description, the shelf unit 1 that is on the bottom when stacked will be referred to as the first shelf unit 10, and the shelf unit 1 that is on the top will be referred to as the second shelf unit 20. An exploded view 1021 in FIG. 2 is an exploded view showing a portion of an assembly shelf 101 made up of the first shelf unit 10 and the second shelf unit 20.

[0017] The first shelf unit 10 has a plurality of first vertical frame members 12 extending in the vertical direction (longitudinal direction, Z-axis direction) and a plurality of first horizontal frame members 11 extending horizontally. The vertical frame members may be referred to as "columns" or "posts," and the horizontal frame members may be referred to as "beams." Here, the first horizontal frame members 11 include a long first horizontal frame member 11a and a short first horizontal frame member 11b. The long first horizontal frame member 11a extends in the horizontal direction (X-axis direction), and the short first horizontal frame member 11b extends in the depth direction (Y-axis direction).

[0018] The first vertical frame members 12 and the first horizontal frame members 11 are preferably made of metal. From the standpoint of being lightweight and strong, it is particularly preferable that the first vertical frame members 12 and the first horizontal frame members 11 be made of extruded aluminum having a plurality of voids or grooves along the extension direction (axial direction) of the frame members. However, the first vertical frame members 12 and the first horizontal frame members 11 may also be made of steel, for example.

[0019] The first vertical frame members 12 and the first horizontal frame members 11 are connected at each connecting portion by any suitable known method. For example, the first vertical frame members 12 or the first horizontal frame members 11 may be connected and fixed at each connecting portion using metal fittings such as corner fittings and bolts. Alternatively, the first vertical frame members 12 or the first horizontal frame members 11 may be joined at each connecting portion by welding or the like. The first shelf unit 10, which forms a substantially rectangular parallelepiped as a whole, has four vertical edges each formed by the first vertical frame members 12.

[0020] On the left side of the first shelf unit 10, a left side frame is formed by connecting two first vertical frame members 12 near their upper and lower ends with short first horizontal frame members 11b. As shown in Fig. 2, to increase the strength of the left side frame, an additional short first horizontal frame member 11b may be provided that connects the two first vertical frame members 12 at another position in the vertical direction. A right side frame is formed in a similar manner on the right side of the first shelf unit 10.

[0021] On the rear surface of the first shelf unit 10, which is generally rectangular as a whole, i.e., on the side surface on the far side (positive Y-axis direction), two first vertical frame members 12 are connected near their upper and lower ends by long first horizontal frame members 11a to form a rear frame. Therefore, the rear frame and the left side frame share one first vertical frame member 12. Similarly, the rear frame and the right side frame share one first vertical frame member 12.

[0022] 2, in order to increase strength, the rear frame may further include a long first horizontal frame member 11a that connects the two first vertical frame members 12 at other positions in the vertical direction (Z-axis direction). Furthermore, in order to increase strength particularly against loads in the vertical direction, the rear frame may also include first vertical frame members 12 that are located at positions other than both ends in the longitudinal direction (horizontal direction).

[0023] 2, more specifically, the first shelf unit 10 is configured to include five first vertical frame members 12, six short first horizontal frame members 11b, and seven long first horizontal frame members 11a. The length of the short first horizontal frame members 11b corresponds to the depth (length in the Y-axis direction) of the first shelf unit 10. The length of the long first horizontal frame members 11a corresponds to the width (length in the X-axis direction) of the first shelf unit 10.

[0024] Of the five first vertical frame members 12, three first vertical frame members 12 are arranged side by side in the horizontal direction (X-axis direction) on the back surface of the first shelf unit 10. The remaining two first vertical frame members 12 are arranged side by side in the negative Y-axis direction relative to the two first vertical frame members 12 on either side of the three first vertical frame members 12 arranged side by side in the X-axis direction.

[0025] In each of the left and right side frames, three short first horizontal frame members 11b are arranged side by side in the vertical direction (Z-axis direction) between two first vertical frame members 12 arranged side by side in the Y-axis direction. Six long first horizontal frame members 11a are arranged side by side in the vertical direction (Z-axis direction) in the back frame.

[0026] The remaining long first horizontal frame member 11a connects the lower ends of the first vertical frame members 12 on the front side (negative Y-axis direction side) of the first vertical frame members 12 that make up the left side frame and the first vertical frame members 12 that make up the right side frame. In other words, the remaining long first horizontal frame member 11a is arranged in the negative Y-axis direction relative to the lowest long first horizontal frame member 11a of the six long first horizontal frame members 11a arranged in the Z-axis direction.

[0027] In this way, the first shelf unit 10 has a structure in which many first horizontal frame members 11 are arranged on the back side, and almost no first horizontal frame members 11 are arranged on the front side, which is the side where items 301 are placed in and out. Therefore, the center of gravity of the first shelf unit 10 is closer to the back side of the first shelf unit 10 in the depth direction (Y-axis direction).

[0028] The second shelf unit 20 has a plurality of second vertical frame members 22 extending in the vertical direction and a plurality of second horizontal frame members 21 extending in the horizontal direction. Here, the second horizontal frame members 21 include long second horizontal frame members 21a and short second horizontal frame members 21b. The long second horizontal frame members 21a extend in the horizontal direction (X-axis direction), and the short second horizontal frame members 21b extend in the depth direction (Y-axis direction). Like the first shelf unit 10, the second shelf unit 20 is configured to have a frame structure including a left side frame, a back frame, and a right side frame.

[0029] 2, more specifically, the second shelf unit 20 is configured to include five second vertical frame members 22, four short second horizontal frame members 21b, and five long second horizontal frame members 21a. Of the five second vertical frame members 22, three second vertical frame members 22 are arranged side by side in the horizontal direction (X-axis direction) on the back surface of the second shelf unit 20. The remaining two second vertical frame members 22 are arranged side by side in the negative Y-axis direction with respect to the two second vertical frame members 22 on either side of the three second vertical frame members 22 arranged side by side in the X-axis direction.

[0030] In each of the left and right side frames, two short second horizontal frame members 21b are arranged side by side in the vertical direction (Z-axis direction) between two second vertical frame members 22 arranged side by side in the Y-axis direction. Five long second horizontal frame members 21a are arranged side by side in the vertical direction (Z-axis direction) in the back frame.

[0031] In this way, the second shelf unit 20 has a structure in which many second horizontal frame members 21 are arranged on the rear side, and no second horizontal frame members 21 are arranged on the front side, which is the side from which the items 301 are placed and removed. Therefore, the center of gravity of the second shelf unit 20 is closer to the rear side of the second shelf unit 20 in the depth direction (Y-axis direction).

[0032] Each shelf unit (first shelf unit 10, second shelf unit 20) has a frame structure consisting of the left side frame, back frame, and right side frame configured as described above, making it relatively lightweight yet sturdy. This makes it possible to stack multiple shelf units vertically to form an assembly shelf.

[0033] <Stacking of shelf units> Next, we will explain the work of assembling the assembly shelf 101 for installation at the site of a factory, warehouse, etc. It goes without saying that shortening the time required for the installation work of such an assembly shelf 101 is desirable, as this will lead to a shortened start-up time and cost reduction for a factory, etc.

[0034] The assembly shelf 101 according to the embodiment is configured so that pre-assembled shelf units 1 can be brought to the site and assembled to complete the installation in a short period of time. Furthermore, each shelf unit 1 is constructed with a frame structure that makes it sturdy yet relatively lightweight, which also improves the efficiency of the assembly work.

[0035] 2 is an explanatory diagram for explaining the situation of the work of stacking the second shelf unit 20 on the first shelf unit 10. Here, when stacking the second shelf unit 20 on the first shelf unit 10, the work of aligning and placing the lifted second shelf unit 20 on the first shelf unit 10 is shown.

[0036] As shown in the figure, when lifting the second shelf unit 20, it is appropriate to attach the rope 30 to the short second horizontal frame members 21b at the top of the left and right side frames of the second shelf unit 20 with anti-slip devices. As a specific example, a loop may be provided at least at the end of the rope 30, and the rope 30 may be attached to the short second horizontal frame members 21b with the main body of the rope 30 passing through the loop. In this way, when lifting the second shelf unit 20, the rope 30 is tightened so as to fasten the short second horizontal frame members 21b, thereby preventing the rope 30 from slipping during lifting.

[0037] As described above, the center of gravity of the second shelf unit 20 is closer to the rear side, so when the second shelf unit 20 is lifted up, the rear side tends to be lower and tilted compared to the state when the second shelf unit 20 is installed. In other words, the second shelf unit 20 tends to tilt from the state when it is installed horizontally, rotating slightly around the X axis from the positive direction of the Z axis to the positive direction of the Y axis.

[0038] For this reason, when the rope is lowered to place the second shelf unit 20 on the first shelf unit 10, the long second horizontal frame member 21a at the bottom of the back frame first comes into contact with the long first horizontal frame member 11a at the top of the back frame of the first shelf unit 10. After that, when the rope is lowered further, other required portions of the first shelf unit 10 and the second shelf unit 20 also come into contact.

[0039] In this case, if the second long horizontal frame member 21a and the first long horizontal frame member 11a, which come into contact first, are accurately aligned, the second shelf unit 20 will be placed in the correct position on top of the first shelf unit 10. Thereafter, the second shelf unit 20 can be joined to the first shelf unit 10 using a conventional method.

[0040] For example, shelving units 1 can be connected to each other by screwing a connecting bolt that passes through a corresponding connecting hole provided in the first horizontal frame member 11 at the top of the first shelving unit 10 into an embedded nut provided in any second horizontal frame member 21 at the bottom of the second shelving unit 20 and tightening it up to secure the units. Alternatively, each of the frame members to be connected may be provided with connecting holes that are through holes, and the connection may be achieved by passing a connecting bolt through these holes and tightening them up with a nut.

[0041] <Interlocking structure> As described above, the assembly shelf 101 is firmly constructed by joining the first horizontal frame member 11 of the first shelf unit 10 and the second horizontal frame member 21 of the second shelf unit 20. Furthermore, in order to efficiently assemble the assembly shelf 101, it is preferable that the second shelf unit 20 can be easily aligned with the first shelf unit 10 when stacked on top of it.

[0042] Therefore, in the assembly shelf 101 according to this embodiment, an interlocking structure is provided on the upper surface of at least one first horizontal frame member 11 provided on the upper part of the first shelf unit 10 and on the lower surface of the second horizontal frame member 21 provided on the lower part of the second shelf unit 20. As a result, when the second shelf unit 20 is stacked on the first shelf unit 10, positioning can be easily achieved by interlocking the interlocking structures with each other. Note that, in the assembly shelf 101 shown in FIG. 1, these interlocking structures are provided at the connecting points in the vertical direction for each shelf unit 1.

[0043] Furthermore, by providing an interlocking structure for positioning on the horizontal frame member that first comes into contact during stacking, the second shelf unit 20 can be placed on the first shelf unit 10 in the correct position, as described above. For this reason, it is preferable that the interlocking structure 23 for the second shelf unit 20 is provided on the second horizontal frame member 21 provided at the bottom of the second shelf unit 20, that is, the second horizontal frame member 21 (the long second horizontal frame member 21a) that is along the back surface of the second shelf unit 20.

[0044] Similarly, it is preferable that the first horizontal frame member 11 connected to the second horizontal frame member 21 is provided with an interlocking structure 13 for the first shelf unit 10. In other words, it is preferable that the interlocking structure 13 for the first shelf unit 10 is provided on the first horizontal frame member 11 provided on the top of the first shelf unit 10, that is, on the first horizontal frame member 11 (the long first horizontal frame member 11a) along the back surface of the first shelf unit 10.

[0045] In other words, the interlocking structure 23 of the second shelf unit 20 is preferably provided on the second horizontal frame member 21 that is closest to the center of gravity of the second shelf unit 20, among the second horizontal frame members 21 that are provided along the outer periphery at the bottom of the second shelf unit 20. The second horizontal frame member 21 (long second horizontal frame member 21a) along the back surface of the second shelf unit 20, which is the second horizontal frame member 21 provided with the interlocking structure, is an example of a second horizontal frame member 21 that is provided across from one side surface of the second shelf unit 20 to the other side surface.

[0046] Furthermore, the first horizontal frame member 11 (long first horizontal frame member 11a) along the back surface of the first shelf unit 10, which is the first horizontal frame member 11 provided with an interlocking structure, is an example of a first horizontal frame member 11 provided from one side surface to the other side surface of the first shelf unit 10. In other words, the first horizontal frame member 11 and the second horizontal frame member 21 provided with an interlocking structure are preferably horizontal frame members extending in the longitudinal direction of the first shelf unit 10 and the second shelf unit 20, respectively.

[0047] Figure 3 is a diagram showing the interlocking structure 13 of the first shelf unit 10 and the interlocking structure 23 of the second shelf unit 20, and is an enlarged view of the portion indicated by the symbol EL in the explanatory diagram 1022 of Figure 2. Figure 4 is a diagram showing the interlocking structure 23 of the second shelf unit 20, and is a perspective view particularly showing the bottom side of the long second horizontal frame member 21a. Figure 5 is a perspective view showing the interlocking structure 13 of the first shelf unit 10. Note that in Figures 3 to 5, portions of the long first horizontal frame member 11a or the long second horizontal frame member 21a are cut away to show the cross-sectional shape.

[0048] The interlocking structure 23 of the second shelf unit 20 is a groove-like structure (valley-shaped) formed along the longitudinal direction on the bottom surface of the long second horizontal frame member 21a. The interlocking structure 13 of the first shelf unit 10 is a ridge-like structure formed along the longitudinal direction on the top surface of the long first horizontal frame member 11a. The groove-like structure of the interlocking structure 23 and the ridge-like structure of the interlocking structure 13 are formed to interlock and fit with each other. When these structures interlock, the interlocking structures 13 and 23 are fixed in position relative to each other in the depth direction (Y-axis direction).

[0049] 3 to 5, more specifically, the groove-shaped structure of the interlocking structure 23 is a recess with a triangular cross section, particularly an isosceles triangular cross section, provided on the bottom surface of the long second horizontal frame member 21a. The ridge-shaped structure of the interlocking structure 13 is a convex structure with a triangular cross section, particularly an isosceles triangular cross section, provided on the top surface of the long first horizontal frame member 11a.

[0050] In this way, the interlocking structures 13, 23 each have an inclined surface that is inclined relative to the horizontal plane. Furthermore, the interlocking structures 13, 23 having the triangular cross sections described above each have a plurality of inclined surfaces that are inclined in directions around the axes of the long first horizontal frame member 11a and the long second horizontal frame member 21a.

[0051] As shown in Figure 4, in the interlocking structure 23, a portion of the bottom surface of the long second horizontal frame member 21a in the longitudinal direction may be flat without being provided with a groove-like structure (recess). As shown in Figure 5, corresponding to the flat portion of such interlocking structure 23, in the interlocking structure 13, a portion of the top surface of the long first horizontal frame member 11a in the longitudinal direction is flat without being provided with a ridge-like structure (convex structure).

[0052] That is, the bottom surface of the long second horizontal frame member 21a may be configured to have a flat portion that fills in the groove where part of the groove-like structure is interrupted, and this portion may be configured to mesh with the portion of the long first horizontal frame member 11a that does not have the ridge-like structure (convex structure).By each further comprising such a portion, the interlocking structures 23 and 13 are also fixed in position relative to each other in the horizontal direction (X-axis direction).

[0053] In the interlocking structure 23, as described above, the groove-shaped structure has a plurality of inclined surfaces that are inclined relative to the horizontal plane around the axis of the long second horizontal frame member 21a. Therefore, in the interlocking structure 23, an inclined surface may be formed at the boundary between the flat portion and the groove-shaped structure that is inclined relative to the horizontal plane in a direction different from the direction around the axis of the long second horizontal frame member 21a. Note that, as in the example of Figure 4, the boundary may be a vertical plane (vertical plane) that is perpendicular to the axial direction of the second horizontal frame member 21 on which the interlocking structure 23 is provided.

[0054] In addition, in the interlocking structure 13, as described above, the ridge structure has a plurality of inclined surfaces that are inclined around the axis of the long first horizontal frame member 11a with respect to the horizontal plane. ridged The boundary of the structure has a long horizontal line. No. 1 Horizontal frame material 11 An inclined surface inclined in a direction different from the direction around the axis a may be formed. As shown in the example of FIG. 5, the boundary is formed by the interlocking structure. 13 It may be a vertical surface (vertical surface) perpendicular to the axial direction of the first horizontal frame member 11 on which the first horizontal frame member 11 is provided.

[0055] In this way, by using an inclined surface inclined in a direction different from the direction around the axis of the second horizontal frame member 21 in the interlocking structure 23, or an inclined surface inclined in a direction different from the direction around the axis of the first horizontal frame member 11 in the interlocking structure 13, the relative positions of these horizontal frame members in the axial direction can be determined, making it possible to align them in that direction.

[0056] The flat portion where the groove-like structure in the interlocking structure 23 ends (an example of which is the end face 22a described below) and the flat portion where the ridge-like structure in the interlocking structure 13 ends (an example of which is the end face 12a described below) are configured to come into contact when the second shelf unit 20 and the first shelf unit 10 are connected.

[0057] Such a structure for lateral alignment of the interlocking structure 23 may be provided in accordance with the arrangement of the second vertical frame members 22 that make up the second shelf unit 20. For example, as shown in Fig. 4, at least one second vertical frame member 22 is provided in the back frame of the second shelf unit 20 so as to penetrate the lower, long second horizontal frame member 21a. The second vertical frame member 22 is arranged so that the end face 22a at the lower end does not protrude from the lower face of the long second horizontal frame member 21a (the face on which the interlocking structure 23 is formed), and forms a flat portion where the groove-like structure is interrupted.

[0058] On the other hand, in the rear frame of the first shelf unit 10, the first vertical frame member 12 at a position where it abuts against the second vertical frame member 22 is provided so as to penetrate the upper, long first horizontal frame member 11a, as shown in Fig. 5. The upper end face 12a of the first vertical frame member 12 is positioned below the interlocking structure 13 of the long first horizontal frame member 11a, and forms a flat section where the ridge structure is interrupted.

[0059] The end faces 22a of the second vertical frame members 22 and the end faces 12a of the first vertical frame members 12 need to be configured so that they come into contact with each other in a state where the interlocking structures 23 of the second horizontal frame members 21 and the interlocking structures 13 of the first horizontal frame members 11 are interlocked. In this way, the assembled shelf 101 is configured so that the second vertical frame members 22 come into contact with the first vertical frame members 12 at the positions where they abut against the second vertical frame members 22, and this makes it possible to support the load when the shelf units 1 are stacked and when the items 301 are placed on them.

[0060] <Variation 1> Below, an example of a modified example of the assembly shelf 101 according to this embodiment is shown. Modification 1 is the same as the assembly shelf 101 according to this embodiment described above, except that a portion of the configuration of the interlocking structure 13 in the first shelf unit 10 is changed.

[0061] 6 is an enlarged rear view (viewed from the Y-axis direction) of a portion of the interlocking structure 13 of the first shelf unit 10. In Modification 1, the portion where the ridge structure on the top surface of the long first horizontal frame member 11a in the interlocking structure 13 of the first shelf unit 10 ends has a tapered shape that opens upward. The sloped surface 13a that forms the taper is an example of the above-mentioned sloped surface that is inclined in a direction different from the direction around the axis of the long second horizontal frame member 21a with respect to the horizontal plane.

[0062] Therefore, when aligning the shelves in the stacking operation, there is a margin for alignment in the horizontal direction (X-axis direction). Moreover, as the second shelf unit 20 is lowered onto the first shelf unit 10, the interlocking structure of the second shelf unit 20 moves along the tapered shape. 23 The flat portion where the groove-like structure ends in the second shelf unit 20 is guided in the horizontal direction. Therefore, when the second shelf unit 20 is finally stacked on the first shelf unit 10, the horizontal direction is also uniquely aligned. Therefore, in the assembly shelf of the first modification, the work of aligning the upper and lower shelf units 1 is twist It can be done efficiently.

[0063] <Variation 2> In the second modification, the configuration of part of the interlocking structure 13 in the first shelf unit 10 and the configuration of part of the interlocking structure 23 in the second shelf unit 20 are changed, but other than that, the second modification is the same as the assembly shelf 101 according to the above-described embodiment.

[0064] 7 is a cross-sectional view perpendicular to the horizontal direction (X-axis direction) to show the interlocking structure 23 of the second shelf unit 20 and the interlocking structure 13 of the first shelf unit 10. Reference numeral 1071 indicates an example of the assembly shelf 101 according to the above-described embodiment for comparison. Reference numeral 1072 indicates an example of an assembly shelf according to one aspect of Modification 2. Reference numeral 1073 indicates an example of an assembly shelf according to another aspect of Modification 2.

[0065] As shown by the reference numeral 1071, the interlocking structure in the assembly shelf 101 according to the present embodiment described above 13 The cross-sectional structure has two slopes and an isosceles triangular cross section. 23 is an interlocking structure 13 The groove-like structure was fitted to the ridge-like structure.

[0066] In the assembly shelf 101 according to the present embodiment described above, even if there is some misalignment in the depth direction (Y-axis direction) when the second shelf unit 20 is stacked on top of the first shelf unit 10, they are guided and correctly aligned by the interlocking structures 13, 23. In other words, whether the misalignment in the Y-axis direction (depth direction) is in the positive or negative Y-axis direction, they are correctly aligned up to about half the thickness in the Y-axis direction of the long second vertical frame member 22.

[0067] On the other hand, as shown by the reference numeral 1072, in the assembly shelf according to the second modification, 13 The cross-sectional structure has a ridge structure with a trapezoidal cross section having two slopes and one horizontal surface. 23 is an interlocking structure 13According to the second modification, the embedded nuts for connecting the shelf units are positioned on the horizontal plane of the interlocking structure 23, thereby making it possible to reliably install the embedded nuts on the long second vertical frame member 22.

[0068] Also, as shown by the reference numeral 1073, in the assembly shelf according to another aspect of the modified example 2, an interlocking structure 13 The second vertical frame member 22 has a ridge-like structure with one long inclined surface, one vertical surface, and one horizontal surface in a cross-sectional position, and has a right-angled triangular cross section. The inclined surface extends over almost the entire width of the long second vertical frame member 22 in the Y-axis direction, and the horizontal surface is a narrow terrace-like surface connected to the lower part of the vertical surface. 23 is an interlocking structure 13 The groove-like structure engages with the ridge-like structure.

[0069] In the assembly shelf according to this embodiment of Modification 2, even if there is some misalignment in the depth direction (Y-axis direction) when the second shelf unit 20 is stacked on top of the first shelf unit 10, the units are guided and correctly aligned by the interlocking structures 13, 23. In other words, as long as the misalignment in the Y-axis direction (depth direction) is up to about the thickness of the long second vertical frame member 22 in the Y-axis direction in either the positive or negative Y-axis direction, they will be correctly aligned.

[0070] 〔summary〕 Aspect 1 of the present disclosure is an assembly shelf comprising a first shelf unit having a plurality of first vertical frame members extending in the vertical direction and a plurality of first horizontal frame members extending in the horizontal direction, and a second shelf unit having a plurality of second vertical frame members extending in the vertical direction and a plurality of second horizontal frame members extending in the horizontal direction, the second shelf unit being stacked on top of the first shelf unit, wherein the upper surface of at least one of the first horizontal frame members provided on the top of the first shelf unit and the lower surface of at least one of the second horizontal frame members provided on the bottom of the second shelf unit are each provided with an interlocking structure that interlocks with each other.

[0071] According to the above aspect, alignment can be easily performed when connecting a plurality of shelf units.

[0072] The assembly shelf of aspect 2 of the present disclosure is characterized in that in the above-mentioned aspect 1, the first horizontal frame member and the second horizontal frame member provided with the interlocking structure are each provided from one side surface of the first shelf unit or the second shelf unit to the other side surface. According to the above-mentioned aspect, it becomes easy to align the shelf units, particularly in the depth direction.

[0073] The assembly shelf of aspect 3 of the present disclosure is characterized in that in the above-mentioned aspects 1 or 2, the interlocking structure of the second shelf unit is provided on the second horizontal frame member along the back surface of the second shelf unit. According to the above-mentioned aspect, the stacking work of the shelf units can be performed efficiently.

[0074] The assembly shelf of aspect 4 of the present disclosure is characterized in that, in any of the above aspects 1 to 3, the interlocking structure in the second shelf unit is provided on the second horizontal frame member that is closest to the center of gravity of the second shelf unit among the second horizontal frame members that are provided along the outer periphery at the bottom of the second shelf unit. According to the above aspect, the stacking work of the shelf units can be performed efficiently.

[0075] The assembly shelf of aspect 5 of the present disclosure is characterized in that the interlocking structure has an inclined surface that is inclined relative to the horizontal plane in any of the above aspects 1 to 4. According to the above aspect, when stacking the shelf units, the inclined surface guides them, allowing for efficient alignment.

[0076] The assembly shelf of aspect 6 of the present disclosure is characterized in that, in any of aspects 1 to 5 above, the interlocking structures of the first shelving unit and the second shelving unit are provided with a plurality of inclined surfaces that are inclined relative to the horizontal plane in directions around the axes of the first horizontal frame member and the second horizontal frame member. According to the above aspect, when stacking the shelving units, they are guided by the inclined surfaces, making it possible to efficiently align them in the horizontal plane, particularly in directions perpendicular to the axial directions of the horizontal frame members.

[0077] The assembly shelf of aspect 7 of the present disclosure is characterized in that, in any of the above aspects 1 to 6, one of the interlocking structures of the first shelving unit and the second shelving unit is ridge-shaped along the first horizontal frame member or the second horizontal frame member, and the other is groove-shaped along the first horizontal frame member or the second horizontal frame member. According to the above aspect, when stacking the shelving units, alignment can be easily achieved in the horizontal plane, particularly in the direction perpendicular to the axial direction of the horizontal frame members.

[0078] The assembly shelf of aspect 8 of the present disclosure is characterized in that, in any of aspects 1 to 7 above, the interlocking structure of at least one of the first shelf unit and the second shelf unit is provided with an inclined surface that is inclined relative to the horizontal plane in a direction different from the direction around the axis of each of the first horizontal frame member and the second horizontal frame member. According to the above aspect, it becomes easy to align these horizontal frame members in the axial direction.

[0079] The assembly shelf of aspect 9 of the present disclosure is characterized in that it is configured by stacking three or more shelf units, including the first shelf unit and the second shelf unit, in any of the above aspects 1 to 8. According to the above aspect, an assembly shelf suitable for installation in a factory or warehouse can be realized.

[0080] The present disclosure is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the disclosed technical means are also included in the technical scope of the present disclosure. [Explanation of symbols]

[0081] 1 shelving unit 10 First Shelving Unit 11 First horizontal frame member 11a Long first horizontal frame member (first horizontal frame member 11) 11b Short first horizontal frame member (first horizontal frame member 11) 12 First vertical frame member 12a End face 13 Interlocking structure 13a Slope (slanted surface) 20 Second Shelving Unit 21 Second horizontal frame member 21a Long second horizontal frame member (second horizontal frame member 21) 21b Short second horizontal frame member (second horizontal frame member 21) 22 Second vertical frame member 22a End face 23 Interlocking structure 30 Rope 101 Assembly shelf 201 Shelf 301 Goods

Claims

1. a first shelf unit having a plurality of first vertical frame members extending in the vertical direction and a plurality of first horizontal frame members extending in the horizontal direction; a second shelf unit having a plurality of second vertical frame members extending in the vertical direction and a plurality of second horizontal frame members extending in the horizontal direction; An assembly shelf configured by stacking the second shelf unit on the first shelf unit, an upper surface of at least one of the first horizontal frame members provided on the upper portion of the first shelf unit and a lower surface of at least one of the second horizontal frame members provided on the lower portion of the second shelf unit are provided with interlocking structures that interlock with each other; The interlocking structures of the first shelf unit and the second shelf unit are provided with a plurality of inclined surfaces inclined in directions around the axes of the first horizontal frame member and the second horizontal frame member relative to a horizontal plane, An assembly shelf in which the interlocking structure of at least one of the first shelf unit and the second shelf unit is provided with an inclined surface that is inclined in a direction different from the direction around the axis of each of the first horizontal frame member and the second horizontal frame member relative to the horizontal plane.

2. 2. The assembly shelf according to claim 1, wherein each of the first horizontal frame member and the second horizontal frame member provided with the interlocking structure is provided from one side of the first shelf unit or the second shelf unit to the other side.

3. 2. The assembly shelf according to claim 1, wherein the interlocking structure of the second shelf unit is provided on the second horizontal frame member along the back surface of the second shelf unit.

4. 2. The assembly shelf according to claim 1, wherein the interlocking structure in the second shelf unit is provided on the second horizontal frame member that is closest to the center of gravity of the second shelf unit, among the second horizontal frame members that are provided along the outer periphery at the bottom of the second shelf unit.

5. 2. The assembly shelf according to claim 1, wherein one of the interlocking structures of each of the first shelf unit and the second shelf unit is ridge-shaped along the first horizontal frame member or the second horizontal frame member, and the other is groove-shaped along the first horizontal frame member or the second horizontal frame member.

6. The assembly shelf according to claim 1 , wherein three or more shelving units, including the first shelving unit and the second shelving unit, are stacked one on top of the other.

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