Intermediate / connection shelf used for reverse-nesting rack, positioning fixture, and connection structure and connection method for reverse-nesting rack

Abstract

To provide an intermediate / connection shelf or the like used for a reverse-nesting rack, which is highly economical and rational and in which an intermediate shelf and a connection shelf can be made of similar materials.SOLUTION: An intermediate / connection shelf 4 is provided, in which an intermediate shelf 4A and a connection shelf 4B provided in a reverse-nesting rack 10 can be made of similar materials. When the shelf is used as the intermediate shelf 4A, the intermediate shelf 4A is set by locking the front and rear parts of a shelf member 7 to a first shelf receiving member 5 laid between two left and right front support pillars 11 and a second shelf receiving member 6 shorter than the first shelf receiving member 5 and laid between two left and right rear support pillars 12. When the shelf is used as the connection shelf 4B, the connection shelf 4B is set by locking the front and rear parts of the shelf member 7 to the second shelf receiving member 6 laid between the two adjacent front support pillars 11 of the adjacent reverse-nesting racks 10 and the first shelf receiving member 5 laid between the two adjacent rear support pillars 12.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention belongs to the technical field of nesting racks used for storing and preserving goods and other items, as well as for displaying them. More specifically, nesting racks are broadly divided into normal nesting racks, which have a load-receiving section (shelf) at the bottom and an open top, and reverse nesting racks, which have an open bottom on which goods can be placed directly via a pallet or the like and have a load-receiving section (top plate) at the top. The present invention relates to the latter type of reverse nesting rack. [Background technology]

[0002] The reverse nesting rack used for storing and displaying goods such as merchandise is disclosed and put into practice in, for example, Patent Documents 1 to 4 and Non-Patent Document 1. Among the above documents, intermediate shelves provided inside the reverse nesting rack are disclosed in Patent Documents 3 and 4. In addition, Non-Patent Document 1 discloses a connecting shelf (connecting bridge) that connects adjacent reverse nesting racks arranged with a gap in the left-right direction.

[0003] The intermediate shelf has the economical and rational advantage of allowing for effective use of the space in the reverse nesting rack, etc. The linked shelf has the economical and rational advantage of contributing to the reduction of the number of reverse nesting racks. Furthermore, by installing these intermediate shelves and connecting shelves on inverted nesting racks, which are unstable because the bottom (base) is not fixed, the strength and rigidity of the entire inverted nesting rack (connecting structure) is increased, which has a synergistic effect of improving storage performance and earthquake resistance, and demand for them has been growing in recent years. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6155350 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-237456 [Patent Document 3] Japanese Patent Application Laid-Open No. 2014-234250 [Patent Document 4] Utility Model Registration No. 3227417 [Non-Patent Document 1] Matsui Kogyo Co., Ltd. Connecting Bridge [URL: https: / / matui-kougyo.co.jp / product / bridge / ] Summary of the Invention [Problem to be solved by the invention]

[0005] As described above, the intermediate shelf and the connecting shelf each have their own advantages and are particularly suitable for use in reverse nesting racks. However, the components that make up the intermediate shelf and the components that make up the connecting shelf must be prepared separately, which increases the number of components and increases costs.

[0006] Therefore, the present invention was devised in consideration of the problems of the background art described above, and its object is to provide a dual-purpose intermediate / connecting shelf for use in a reverse nesting rack that is economical and rational, and in which the intermediate shelf and connecting shelf can be constructed from the same material. Another object of the present invention is to provide a positioning jig that is easy to install and rational, and that is installed when a combined intermediate / connecting shelf is used as a connecting shelf, and that can reliably realize a connecting structure of reverse nesting racks that is superior in strength and rigidity, as well as a connecting structure and connecting method for connecting adjacent reverse nesting racks using the same jig. [Means for solving the problem]

[0007] As a means for solving the above-mentioned problems, the invention of claim 1 provides a dual-purpose intermediate / connecting shelf for use in an inverted nesting rack, which comprises four support columns erected on all four sides, rectangular load receiving sections fixed to the upper ends of the four support columns, and horizontal frames that connect the lower ends of the four adjacent support columns, excluding the front section, in a generally U-shaped configuration in plan view, and in which the spacing between the two left and right rear support columns erected on the rear section is made narrower than the spacing between the two left and right front support columns erected on the front section, making the inverted nesting rack structure capable of nesting: a combined intermediate / connecting shelf, in which an intermediate shelf provided inside the inverted nesting rack and a connecting shelf connecting adjacent inverted nesting racks arranged at intervals in the left-right direction are made of the same material, When used as the intermediate shelf, the shelf member is formed by hooking the front and rear portions of the shelf member onto a first shelf support member installed between the two left and right front columns and a second shelf support member that is shorter than the first shelf support member installed between the two left and right rear columns, When used as the linked shelf, the linked shelf is formed by hooking the front and rear portions of the shelf member onto the second shelf support member installed between the two adjacent front supports of the adjacent reverse nesting racks and the first shelf support member installed between the two adjacent rear supports.

[0008] The invention described in claim 2 is a dual-purpose intermediate / connection shelf used in the reverse nesting rack described in claim 1, characterized in that the first shelf support member and the second shelf support member are dual-purpose shelf support members whose lengths are adjustable.

[0009] The invention described in claim 3 is a dual-purpose intermediate / connecting shelf used in the reverse nesting rack described in claim 1, characterized in that the first shelf support member and the second shelf support member have one or more approximately spherical anti-slip pins at both ends, the support posts have keyhole-shaped pin holes that connect large diameter holes and small diameter holes vertically, and the anti-slip pin is inserted into the large diameter hole and dropped into the small diameter hole to be erected.

[0010] The positioning jig of the invention described in claim 4 is a positioning jig that is provided when a dual-purpose intermediate / connecting shelf for use with an inverted nesting rack described in any one of claims 1 to 3 is used as a connecting shelf, and is characterized in that it is installed between adjacent inverted nesting racks, and two adjacent, approximately parallel horizontal frame members of each adjacent inverted nesting rack are placed on top of it, thereby preventing the horizontal frame members from shifting and maintaining the distance between the adjacent inverted nesting racks.

[0011] A connection structure for connecting adjacent reverse nesting racks according to the invention described in claim 5 is a connection structure for connecting adjacent reverse nesting racks using the positioning jig described in claim 4, The intermediate / connection shelf is attached and constructed in a state where the corresponding horizontal frame members of the adjacent reverse nesting racks are placed and positioned on the left and right ends of the positioning jig installed in a predetermined location.

[0012] A method for connecting adjacent reverse nesting racks according to the invention described in claim 6 is a method for connecting adjacent reverse nesting racks using the positioning jig described in claim 4, The horizontal frame members of the adjacent reverse nesting racks are placed on the left and right ends of the positioning jig installed in a predetermined location, and then the intermediate / connecting shelf is attached and constructed. [Effects of the Invention]

[0013] According to the dual-purpose intermediate / connecting shelf used in the reverse nesting rack of the present invention, the intermediate shelf and the connecting shelf can be constructed from the same material, which is therefore excellent in economic efficiency and rationality. The positioning jig according to the present invention can accurately position adjacent inverted nesting racks and restrain them from shifting. This makes it possible to reliably realize an inverted nesting rack connection structure and connection method with greater strength and rigidity. This in turn makes it possible to realize an inverted nesting rack connection structure and connection method with improved storage performance and earthquake resistance. By making the connecting structure of the reverse nesting rack multi-span, it is possible to realize a connecting structure and connecting method for the reverse nesting rack that has improved storage performance and earthquake resistance, such as being able to have rack functions as well.

[0014] When the length-adjustable shelf support member according to claim 2 is used, the number of components can be further reduced, making it possible to realize a more economical and rational reverse nesting rack connection structure and connection method. When the retaining pin structure according to claim 3 is implemented, it can be constructed without using tools, so that a connecting structure and connecting method for reverse nesting racks that are easy to install can be realized. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view showing a schematic diagram of a connection structure of a reverse nesting rack assembled using a dual-purpose intermediate / connection shelf and a positioning jig according to the present invention. FIG. [Figure 2] 2 is a perspective view showing a state in which the reverse nesting racks used in FIG. 1 are stacked. FIG. [Figure 3] FIG. 2 is a perspective view showing an example of a reverse nesting rack used in FIG. 1. [Figure 4] 4 is a plan view showing the upper structure (receiving portion) of the reverse nesting rack shown in FIG. 3. FIG. [Figure 5] 4 is a plan view (bottom plan view) showing the reverse nesting rack shown in FIG. 3 excluding the upper structure (receiving portion). FIG. [Figure 6] 6 is an elevation view including the superstructure (load receiving section) seen from the A side between A-A' in FIG. 5. FIG. [Figure 7]6 is an elevation view including the superstructure (load receiving section) seen from the B side between B-B' in FIG. 5. FIG. [Figure 8] FIG. 4 is a right side view of the reverse nesting rack according to FIG. 3. [Figure 9] 4 is an explanatory view showing the main parts of the reverse nesting rack shown in FIG. 3 in a nested state. FIG. [Figure 10] 1A is a plan view showing a first shelf support member constituting the intermediate / connection shelf according to the present invention, and FIG. 1B is a front view of the same. [Figure 11] 1A is a plan view showing a second shelf support member constituting the intermediate / connection shelf according to the present invention, and FIG. 1B is a front view of the same. [Figure 12] 1A is a plan view showing a shelf member constituting a combined intermediate and connecting shelf according to the present invention, and FIG. 1B is a right side view of the same. [Figure 13] FIG. 2 is a front view showing an enlarged view of pin holes provided in the support pillars (front support pillar, rear support pillar). [Figure 14] FIG. 10 is a plan view showing the connection state between the front support column (rear support column) and the first and second shelf support members. [Figure 15] 10 is an explanatory view showing a state in which first and second shelf support members are installed on adjacent reverse nesting racks positioned by a positioning jig. FIG. [Figure 16] 16 is a plan view (view taken along the arrow XX) showing a state in which shelf members are provided on the first and second shelf support members in FIG. 15 to form an intermediate shelf and a connecting shelf. FIG. [Figure 17] 1A is a plan view showing a positioning jig according to the present invention, FIG. 1B is a view taken along line BB in FIG. 1A, and FIG. 1C is a right side view in FIG. [Figure 18] 18 is an explanatory diagram showing a state in which adjacent inverted nesting racks on the left and right sides of the positioning member shown in FIG. 17 are positioned. For convenience of illustration, the upper structure (receiving portion) of the inverted nesting rack is omitted. DETAILED DESCRIPTION OF THE INVENTION

[0016] Next, an embodiment of the present invention will be described with reference to the drawings.

[0017] (Explanation of the reverse nesting rack to which the present invention is applied) As shown in Figure 3, the present invention is applied to a reverse nesting rack 10 having a structure that allows nesting by comprising four pillars 1 erected on all four sides, a rectangular load-receiving section 2 fixed to the upper ends of the four pillars 1, and a horizontal frame member 3 that connects the lower ends of the four adjacent pillars 1 together in a roughly U-shape in plan view, except for the front section, and by making the installation spacing of the two left and right rear pillars 12 erected on the back section narrower than the installation spacing of the two left and right front pillars 11 erected on the front section (see also Figures 4 to 8 for more details). As an example, the support posts 1 are hollow rectangular (or round) metal support posts 1, with connecting protrusions 1a at the top for stacking (see Figure 2). As an example, the rectangular load-receiving section 2 is formed in a lattice shape by combining metal vertical and horizontal members, and as shown in Figure 4, appropriate measures are taken, such as reinforcing the four corners with braces 21, as needed. The horizontal frame members 3 provided on both side surfaces of the reverse nesting rack 10 have hooked portions 32 and hooking portions (hanging rails) 31 for nesting at the top and bottom (see also Figure 9). In short, the present invention is applicable to all inverted nesting racks having the basic configuration of a general inverted nesting rack 10, in which the bottom is open so that products can be placed directly on it via a pallet or the like, and the top is provided with a load-receiving section (top plate) 2, and it should be noted that the inverted nesting rack 10 shown in the illustration is merely one example. For example, the shape of the connecting protrusions 1a is not limited to the triangular or other angular protrusions shown in the illustration, and it can of course also be implemented with spherical protrusions that are roughly bowl-shaped (hemispherical) and can guide and adjust (absorb) slight misalignment, as shown in Non-Patent Document 1.

[0018] (Description of the intermediate / connectable shelf according to the present invention) As shown in FIG. 1, the dual-purpose intermediate / connecting shelf 4 of the present invention is characterized in that the intermediate shelf 4A provided inside the inverted nesting rack 10 of the above-described configuration and the connecting shelf 4B connecting adjacent inverted nesting racks 10 arranged with a gap in the left-right direction are made of the same material. Specifically, when used as the intermediate shelf 4A, the intermediate shelf 4A is formed by hooking the front and rear portions of the shelf member 7 to a first shelf support member 5 (see Figure 10) installed between the two left and right front pillars 11 and a second shelf support member 6 (see Figure 11) that is shorter than the first shelf support member 5 installed between the two left and right rear pillars 12, as shown in Figure 12. When used as the linked shelf 4B, the linked shelf 4B is formed by hooking the front and rear portions of the shelf member 7 to the second shelf support member 6 installed between the two adjacent front supports 11 of the adjacent reverse nesting racks 10 and the first shelf support member 5 installed between the two adjacent rear supports 12.

[0019] The first shelf support member 5 is made of metal, and as shown in Fig. 10, has a structure including a main body portion (a square steel pipe in the illustrated example) 51, hook portions (L-shaped plate material in the illustrated example) provided at both ends of the main body portion 51, and a retaining pin 53 protruding from the hooking portion 52. The retaining pin 53 is composed of a substantially spherical head portion 53a and a shaft portion 53b, and in this embodiment, two are provided, one above the other, to make Fig. 10B easier to understand. 13 to 16, when forming the intermediate shelf 4A, the first shelf support member 5 is installed substantially horizontally between the front supports 11 by hooking the anti-slip pins 53 at both ends thereof into keyhole-shaped pin holes 9, which are provided in the middle of the two left and right front supports 11 and have a large diameter hole 91 and a small diameter hole 92 that communicate vertically.When forming the connecting shelf 4B, the first shelf support member 5 is installed substantially horizontally between the rear supports 12 by hooking the anti-slip pins 53 at both ends thereof into keyhole-shaped pin holes 9, which are provided in the middle of the two adjacent rear supports 12.

[0020] On the other hand, the second shelf support member 6 is made of metal, and as shown in Fig. 11, although it is shorter than the first shelf support member 5, it has a structure similar to the first shelf support member 5, comprising a main body portion (a square steel pipe in the illustrated example) 61, hook portions (L-shaped plate material in the illustrated example) 62 provided at both ends of the main body portion 61, and a retaining pin 63 protruding from the hooking portion 62. The retaining pin 63 is composed of a substantially spherical head portion 63a and a shaft portion 63b, and in this embodiment, two are provided, one above the other, to make Fig. 11B easier to understand. 13 to 16, when forming the intermediate shelf 4A, the second shelf support member 6 is installed substantially horizontally between the rear supports 12 by hooking the anti-slip pins 63 at both ends thereof into keyhole-shaped pin holes 9, which are provided in the middle of the two left and right rear supports 12 and have a large diameter hole 91 and a small diameter hole 92 that communicate vertically.When forming the connecting shelf 4B, the second shelf support member 6 is installed substantially horizontally between the front supports 11 by hooking the anti-slip pins 63 at both ends thereof into the keyhole-shaped pin holes 9, which are provided in the middle of the two adjacent front supports 11.

[0021] As shown in Fig. 6, three sets of keyhole-shaped pin holes 9 are provided on one front support 11, one above and one below, for a total of four pin holes 9a for intermediate shelves on the inside side of the reverse nesting rack 1 and two above and one below, respectively, for pin holes 9b for connecting shelves on the outside side, making one set of four pin holes 9a for intermediate shelves on the inside side of the reverse nesting rack 1 and two above and one below, respectively, for pin holes 9b for connecting shelves on the outside side, making one set of four pin holes 9a for intermediate shelves on the inside side of the reverse nesting rack 1 and two above and one above ... In addition, in this embodiment, the pin holes 9 (9a, 9b) provided in the front support 11 and the pin holes 9 (9a, 9b) provided in the rear support 11 are configured so that their shapes, numbers, and heights are all the same.

[0022] The heads 53a, 63a of the anti-slip pins 53, 63 are sized smaller than the large diameter hole 91 of the keyhole-shaped pin hole 9 and larger than the small diameter hole, and the shafts 53b, 63b are sized smaller than the large diameter hole and the small diameter hole. Thus, as shown in Figures 13 and 14, the heads 53a, 63a of the anti-slip pins 53, 63 at both ends of the first and second shelf support members 5, 6 are inserted into the large-diameter holes 91 of the keyhole-shaped pin holes 9 and dropped into the small-diameter holes 92, whereby the shafts 53b, 63b are hooked onto the lower ends of the small-diameter holes, making the anti-slip pins 53, 63 unable to be pulled out, and the first and second shelf support members 5, 6 are installed approximately horizontally on the support posts 1 (front support posts 11, rear support posts 12) and ultimately on the reverse nesting rack 10 as described above. Incidentally, the first and second shelf support members 5 and 6 in this embodiment are hooked onto pin holes 9 provided in the middle of the three adjustable shelf height levels of top, middle and bottom, as shown in FIG.

[0023] The shelf member 7 is made of metal, and as shown in Fig. 12A, is formed in a lattice shape by combining vertical members (square steel pipes in the illustrated example) 71, horizontal members (square steel pipes thinner than the vertical members 71 in the illustrated example) 72, and frame members (angle members in the illustrated example) 73, and as shown in Fig. 12B, downward recesses are formed at both ends of the vertical members 71 by means of end-close processing or the like so that they can be hooked onto the corresponding first and second shelf support members 5, 6. Incidentally, the weight of the shelf member 7 is generally around 20 to 30 kg.

[0024] Thus, as shown in Figures 1, 16, etc., when the combined intermediate / connecting shelf 4 of the present invention is used as the intermediate shelf 4A, the first shelf support member 5 is installed between the two left and right front support columns 11 using the keyhole-shaped pinholes 9 located at the same height, and the second shelf support member 6 is installed between the two left and right rear support columns 12, and then the downward recesses of the shelf member 7 are hooked onto the first and second shelf support members 5, 6 which are parallel to each other in the front and rear directions to form the intermediate shelf 4A. On the other hand, when used as the linked shelf 4B, the keyhole-shaped pin holes 9 located at the same height are used to install the second shelf support member 6 between the two adjacent front supports 11 of the adjacent reverse nesting racks 10, and the first shelf support member 5 is installed between the two adjacent rear supports 12, and then the downward recesses of the shelf member 7 are hooked onto the second and first shelf support members 6, 5 which are parallel to each other in the front and rear directions to form the linked shelf 4B.

[0025] As described above, the intermediate / connecting shelf 4 of the present invention can be constructed from three identical components (common components): the first shelf support member 5, the second shelf support member 6, and the shelf member 7, with the intermediate shelf 4A and the connecting shelf 4B having significantly different installation locations. When the first shelf support member 5 and the second shelf support member 6 are implemented as length-adjustable shelf support members formed into an extendable double-tube structure, the length-adjustable shelf support member and the shelf member 7 can be configured as two identical members.

[0026] (Description of the positioning jig according to the present invention) The positioning jig 8 shown in Figure 17 of the present invention is provided when the intermediate / connecting dual-purpose shelf 4 is used as a connecting shelf 4B, as shown in Figures 1 and 16, and is installed between the adjacent reverse nesting racks 10, as shown in Figure 18, and the two adjacent, approximately parallel horizontal frame members 3 of each adjacent reverse nesting rack 10 are placed on top of it, thereby preventing the horizontal frame members 3 from shifting and maintaining the spacing between the adjacent reverse nesting racks 10.

[0027] Specifically, the positioning jig 8 is made of metal, and as shown in Fig. 17A, is formed in a lattice shape by combining vertical members (square steel pipes in the illustrated example) 81, horizontal members (square steel pipes in the illustrated example) 82, and frame members (square steel pipes in the illustrated example) 83. Furthermore, as shown in Fig. 17B, L-shaped plate members 86 that form the bottom surface are extended on the left and right ends by welding or other joining means, and positioning rails 84 made of steel material such as angle iron (angle material) formed into a rail shape are attached vertically to the top surface of the bottom surface (L-shaped plate members 86) by welding or other joining means. Then, as shown in Fig. 17C, positioning protrusions 85 are erected at a short distance from the positioning rails 84. The positioning rails 84 provided vertically at both the left and right ends of the positioning jig 8 are shaped to overlap the hook portions 31 (see FIG. 3, etc.) of the horizontal frame members 3 that connect the front support columns 11 and rear support columns 12 of the reverse nesting rack 10, and the positioning protrusions 85 are shaped and rigid enough to be fitted into the front support columns 11 of the reverse nesting rack 10 (see FIG. 18). The positioning rails 84 serve to maintain the spacing between adjacent reverse nesting racks 10. Furthermore, the positioning protrusions 85 not only maintain the spacing between adjacent reverse nesting racks 10 and position them, but also serve to align (align) them front to back.

[0028] The length of the positioning jig 8 in the left-right direction is set to a dimension that allows the second shelf support member 6 to be installed between the left and right front supports 11 and the first shelf support member 5 to be installed between the left and right rear supports 12 when the hanging portions 31 of the horizontal frame members 3 of the adjacent reverse nesting rack 10 are overlapped with the positioning rails 84 provided on both the left and right ends of the positioning jig 8. However, when using shelf support members whose length is adjustable, a certain degree of dimensional difference is permissible.

[0029] (Description of a connection method and connection structure using a positioning jig according to the present invention) Therefore, as shown in FIG. 18 , the method for connecting adjacent reverse nesting racks 10 using the positioning jig 8 involves placing the corresponding horizontal frame members 3 (the hook portions 31) of adjacent reverse nesting racks 10 on the left and right ends (the positioning rails 84) of the positioning jig 8 installed in a predetermined location such as a warehouse. At the same time, the corresponding front support columns 11 of the adjacent reverse nesting racks 10 are fitted from above into the positioning protrusions 85 of the positioning jig 8. The constraining effect of the positioning rails 84 prevents the adjacent reverse nesting racks 10 from shifting left and right, and the constraining effect of the positioning protrusions 85 prevents shifting forward, backward, and left and right, thereby positioning the adjacent reverse nesting racks 10. These constraining effects maintain the distance between the adjacent reverse nesting racks 10 and position them, thereby enabling forward and backward movement. Thereafter, the above-mentioned dual-purpose intermediate / connecting shelf 4 (intermediate shelf 4A, connecting shelf 4B) is constructed as needed by assembling three identical members, the first shelf support member 5, the second shelf support member 6, and the shelf member 7 (or two identical members, the length-adjustable shelf support member and the shelf member 7), as shown in Figures 1 and 16, for example, thereby constructing the required connected structure of the reverse nesting rack. The dual-purpose intermediate / connecting shelf 4 (intermediate shelf 4A, connecting shelf 4B) can be assembled smoothly and reliably due to the restraining effect of the positioning rail 84 and the positioning protrusion 85 of the positioning jig 8. In the illustrated example, for convenience of illustration, a three-span connecting structure is shown on the left and right, including the connecting shelf 4B, but this is not limited to this, and a multi-span connecting structure can easily be realized by providing connecting shelves 4B every other shelf.

[0030] Although the embodiments have been described above based on the drawings, it should be noted that the present invention is not limited to the illustrated examples and includes the range of design modifications and application variations that would normally be made by a person skilled in the art, provided that they do not deviate from the technical concept of the present invention. For example, the first and second shelf support members 5, 6 can be connected to the support columns 1 (front support column 11, rear support column 12) by bolt and nut fastenings. However, using the retaining pins 53, 63 as in this embodiment has the advantage of being able to be installed without the use of tools. In this embodiment, two anti-slip pins 53, 63 are provided, one above the other (see Fig. 10B and Fig. 11B), but it is also possible to provide only one. However, providing two above and below as in this embodiment can prevent rotation (moment) of the first and second shelf support members 5, 6, thereby realizing a connecting structure with better rigidity and earthquake resistance. Furthermore, in the intermediate shelf 4A and the connecting shelf 4B according to this embodiment, the shelf members 7 are set in a substantially horizontal state, but the shelf members 7 can be set in a forward tilted state by shifting the heights of the first and second shelf support members 5, 6. In this case, it is preferable that the shelf members 7 are formed in a tray shape to prevent products and the like from slipping off. Furthermore, in this embodiment, the shelf height is configured to be adjustable in three stages, but of course this is not limited to this, and by increasing or decreasing the number of pin holes 9, it can be configured to be adjustable in four or more stages, or it can be configured to be adjustable in one or two stages. Finally, with regard to the size of each component, since the present invention is an invention that is applied to the general-purpose reverse nesting rack 10, it is judged that it is easy to imagine, and therefore description of the sizes of the support 1 (front support 11, support 12), cargo receiving section 2, horizontal frame member 3, etc. that make up the reverse nesting rack 10 is omitted, but just to be sure, the first shelf support member 5 in the illustrated example is implemented, as an example only, with a total length including the hanging section 52 of approximately 1555 mm, and the second shelf support member 6 is implemented, as an example only, with a total length including the hanging section 62 of approximately 1415 mm. [Explanation of symbols]

[0031] 1 post 1a Connection protrusion 11 Front support 12 Rear support 2 Receiving section 21 Flint Beam 3 Horizontal frame material 31 Nesting hook (hook rail) 32 Nesting hook 4 Intermediate / Connectable Shelves 4A Middle shelf 4B Linked Shelf 5 First shelf support member 51 Main body 52 Latch part 53 Retaining pin 6 Second shelf support member 61 Main body 62 Latch part 63 Retaining pin 7 Shelf parts 71 Vertical members 72 Cross member 73 Shelf frame material (angle iron) 8 Positioning jig 81 Vertical members 82 Cross member 83 Frame material 84 Positioning rail 85 Positioning protrusion 9 pin holes 91 Large diameter hole 91 Small diameter hole 9a Pin hole for middle shelf 9b Pin holes for connecting shelves 10 Reverse nesting rack

Claims

1. A reverse nesting rack having four support posts erected on all four sides, rectangular load receiving sections fixed to the upper ends of the four support posts, and horizontal frames connecting the lower ends of the four adjacent support posts excluding the front section in a generally U-shaped configuration in plan view, wherein the spacing between the two left and right rear support posts erected on the rear section is narrower than the spacing between the two left and right front support posts erected on the front section, thereby enabling nesting. a combined intermediate / connecting shelf, in which an intermediate shelf provided inside the inverted nesting rack and a connecting shelf connecting adjacent inverted nesting racks arranged at intervals in the left-right direction are made of the same material, When used as the intermediate shelf, the shelf member is formed by hooking the front and rear portions of the shelf member onto a first shelf support member installed between the two left and right front columns and a second shelf support member that is shorter than the first shelf support member installed between the two left and right rear columns, When used as the connecting shelf, the front and rear portions of the shelf member are hooked onto the second shelf support member installed between the two adjacent front supports of the adjacent reverse nesting racks, and the first shelf support member installed between the two adjacent rear supports of the adjacent reverse nesting racks, thereby forming a connecting shelf.

2. 2. The combined intermediate / connection shelf used in the reverse nesting rack according to claim 1, wherein the first shelf support member and the second shelf support member are combined into a shelf support member whose length is adjustable.

3. 2. The intermediate / connecting shelf used in the reverse nesting rack according to claim 1, characterized in that the first shelf support member and the second shelf support member have one or more approximately spherical anti-slip pins at both ends thereof, the support posts have keyhole-shaped pin holes that connect large-diameter holes and small-diameter holes vertically, and the shelf is erected by inserting the anti-slip pin into the large-diameter hole and dropping it into the small-diameter hole.

4. A positioning jig provided when a dual-purpose intermediate / connecting shelf for use with an inverted nesting rack according to any one of claims 1 to 3 is used as a connecting shelf, characterized in that the positioning jig is installed between adjacent inverted nesting racks, and two adjacent, approximately parallel, horizontal frame members of each adjacent inverted nesting rack are placed on top of the positioning jig, thereby preventing the horizontal frame members from shifting and maintaining the spacing between the adjacent inverted nesting racks.

5. A connection structure for connecting adjacent reverse nesting racks using the positioning jig according to claim 4, A connection structure for adjacent reverse nesting racks, characterized in that the corresponding horizontal frame members of adjacent reverse nesting racks are placed and positioned on both the left and right ends of the positioning jig installed in a predetermined location, and then the intermediate / connecting shelf is attached and constructed.

6. A method for connecting adjacent reverse nesting racks using the positioning jig according to claim 4, A method for connecting adjacent reverse nesting racks, characterized in that the corresponding horizontal frame members of adjacent reverse nesting racks are placed and positioned on both the left and right ends of the positioning jig installed in a predetermined location, and then the intermediate / connecting shelf is attached and constructed.

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