JP7560440B2 - Nesting Rack - Google Patents

Description

The present invention relates to a nesting rack on which items can be placed, and in particular to a nesting rack that has a receiving shelf separate from the base.

Nesting racks (also called nesteners) have been used in warehouses and the like for some time. Nesting racks improve storage efficiency by stacking cargo (items) that cannot be directly stacked, and are configured to store items in a space-saving manner when not in use by nesting (stacking) multiple racks in a nested manner (Patent Document 1). In this case, intermediate shelves can be provided on the nesting rack (Patent Documents 2 and 3).

JP 2019-99359 A JP 2014-234250 A Japanese Unexamined Patent Publication No. 4-189209

However, when a nesting rack is provided with an intermediate shelf as in Patent Documents 2 and 3, the intermediate shelf gets in the way when nesting multiple nesting racks when not in use. This poses the problem of having to remove the intermediate shelf or store it in the space between the rear supports, which is time-consuming and cumbersome.

The present invention was made to solve the above problems, and aims to provide a nesting rack that allows nesting without the need to remove the intermediate shelves or other cargo receiving shelves when not in use.

In order to achieve the above object, the present invention adopts a nesting rack (1) in which a pair of front supports (3a, 3b) are erected at a predetermined interval on the front side of a base portion (2), and a pair of rear supports (3c, 3d) are erected at a narrower interval than the predetermined interval on the rear side of the base portion (2), and another nesting rack can be nested between the pair of front supports (3a, 3b). A load receiving shelf (4) is formed by a left connecting member (5a) and a right connecting member (5b) fixed along a predetermined line (L4) extending in the front-rear direction at a position spaced apart in the left-right direction and not interfering with the nesting, and a cross member (6) arranged between the left connecting member and the right connecting member, and a holding mechanism (7) is provided for holding both ends of the cross member (6) to the left connecting member (5a) and the right connecting member (5b), and the holding mechanism (7) holds at least one cross member (6), The left connecting member (5a) and the right connecting member (5b) are provided with a first holding member (20) and a second holding member (30) disposed on the rear side and the front side of the central portion of the left connecting member (5a) and the right connecting member (5b), respectively. Both holding members (20) and (30) are rotatably connected to each other by a pivot portion (26). The rear end of the first holding member (20) is rotatably connected to a fixed portion on the predetermined line (L4), and the front end of the second holding member (30) is rotatably connected to a fixed portion on the predetermined line (L4) and is movable in the front-rear direction and rotatable on the predetermined line (L4). The second retaining member (30) is installed in a vertical position such that the pivot portions (26) of the retaining members (20) and (30) are disposed above the predetermined line (L4). When the cross member (6) of the second retaining member (30) is pushed in by a force F1 directed rearward from the front side, the first retaining member (20) and the second retaining member (30) are bent in a mountain shape via the pivot portions (26) and the second retaining member (30) is moved rearward, and the retaining mechanism (7) is folded in a position near the rear support columns (3c, 3d) .

In a preferred embodiment, the first retaining member (20) has an upward connecting portion (25) at its front end, and a pivot portion (26) that connects the first retaining member (20) and the second retaining member (30) is provided at the connecting portion (25), so that the pivot portion (26) is positioned above the specified line (L4) .

In a further preferred embodiment, the left connecting member (5a) and the right connecting member (5b) are provided with rails (18) extending in the front-rear direction, and wheels (35) are provided at the front end of the second holding member (30) and the wheels (35) are installed so as to be freely rollable on the rails (18). In this case, it is preferable that the rails (18) are configured to incline downward from the rear to the front.

According to the present invention, the holding member (7) can be bent in a mountain shape at the center in the front-rear direction, and when another nesting rack is inserted between the pair of front supports (3a, 3b) toward the pair of rear supports (3c, 3d), the holding member (7) can bend at the center to move the cross member (6) back toward the pair of rear supports (3c, 3d). Therefore, when nesting multiple nesting racks (1) when not in use, there is no need to remove the cross member (6), resulting in excellent work efficiency.

FIG. 2 is a perspective view showing one configuration example of a nesting rack. FIG. 2 is an enlarged perspective view of the cargo receiving shelf. FIG. 13A and 13B are diagrams showing an example in which the central portion of the holding member is bent into a mountain shape. FIG. 13 is a diagram showing an example of a nesting operation when not in use. FIG. 13 is a diagram showing a state in which three nesting racks are nested.

Below, preferred embodiments of the present invention will be described in detail with reference to the drawings. Note that in the drawings referred to below, the same reference numerals are used to designate common members, and redundant descriptions of those members will be omitted.

Figure 1 is a perspective view showing an example of the configuration of a nesting rack 1 according to an embodiment of the present invention. This nesting rack 1 improves storage efficiency by stacking luggage (items) that cannot be directly stacked, for example in a warehouse, and when not in use, can be stored in a space-saving manner by nesting (stacking) them in multiple nested configurations. As shown in Figure 1, the nesting rack 1 includes a rectangular base portion 2 disposed at the bottom, a pair of front supports 3a, 3b erected at a predetermined interval in the left-right direction on the front side of the base portion 2, and a pair of rear supports 3c, 3d erected at a predetermined interval in the left-right direction on the rear side of the base portion 2.

The base section 2 is a base framed in a rectangular shape by welding, for example, square metal pipes, and the planar size of the rectangle is a size that allows, for example, a pallet to be loaded. Therefore, the base section 2 can directly place a pallet with items (luggage) loaded on its upper surface. The base section 2 also supports the front columns 3a, 3b and rear columns 3c, 3d in a vertically erected state. A space is formed below the base section 2 into which the forks of a forklift or the like can be inserted. Therefore, the nesting rack 1 can be moved by lifting the base section 2 with a forklift or the like.

The front supports 3a, 3b are spaced apart in the left-right direction greater than the left-right dimension of the rear end of the base 2. In other words, a space large enough to accommodate the rear end of the base 2 of another nesting rack 1 is provided between the pair of front supports 3a, 3b. On the other hand, the left-right spacing of the rear supports 3c, 3d is narrower than the spacing between the front supports 3a, 3b, and is fixed to the rear side of the base 2, for example, as shown in the figure. Therefore, when nesting multiple nesting racks 1 when not in use, it is possible to insert the rear end of another nesting rack 1 in a nested manner between the pair of front supports 3a, 3b.

The nesting rack 1 also includes a load-receiving shelf 4 that can be attached at any height on the front columns 3a, 3b and rear columns 3c, 3d. FIG. 1 shows an example in which the load-receiving shelves 4, 4 are provided at two height positions, at the top and center of the front columns 3a, 3b and rear columns 3c, 3d. However, the mounting position of the load-receiving shelves 4 is not limited to this, and the number of load-receiving shelves 4 installed is not limited to two. For example, the load-receiving shelves 4 may be installed at only one position, at the top or center of the front columns 3a, 3b and rear columns 3c, 3d. Also, three or more load-receiving shelves 4 may be installed at different height positions.

Figure 2 is an enlarged perspective view of the cargo receiving shelf 4. Figure 3 is a side view of the cargo receiving shelf 4. The cargo receiving shelf 4 is equipped with a left connecting member 5a, a right connecting member 5b, a cross member 6, and a holding mechanism 7 that holds the cross member 6.

The left connecting member 5a extends in the front-rear direction by being installed on the left front support 3a of the pair of front supports 3a, 3b and the left rear support 3c of the pair of rear supports 3c, 3d, and connects the left front support 3a and the left rear support 3c. The right connecting member 5b extends in the front-rear direction by being installed on the right front support 3b of the pair of front supports 3a, 3b and the right rear support 3d of the pair of rear supports 3c, 3d, and connects the right front support 3b and the right rear support 3d. The left connecting member 5a and the right connecting member 5b have symmetrical shapes. In other words, the left connecting member 5a and the right connecting member 5b have the same configuration except for the symmetrical shapes. In the following, when the left connecting member 5a and the right connecting member 5b are not distinguished from each other, they may be collectively referred to as the connecting member 5.

2, the left connecting member 5a has an arm bar 11 extending in the front-rear direction, a front connecting portion 12 extending outward from the front end 11a of the arm bar 11 and connected to the front support 3a, and a rear connecting portion 14 extending inward from the rear end 11b of the arm bar 11 and connected to the rear support 3c. The right connecting member 5b has an arm bar 11 extending in the front-rear direction, a front connecting portion 12 extending outward from the front end 11a of the arm bar 11 and connected to the front support 3b, and a rear connecting portion 14 extending inward from the rear end 11b of the arm bar 11 and connected to the rear support 3d. Here, the arm bar 11 of the left connecting member 5a and the arm bar 11 of the right connecting member 5b are arranged in parallel with each other in the front-rear direction. In addition, these arm bars 11 are positioned inward in the left-right direction from the pair of front supports 3a, 3b, so that when nesting racks, the rear supports 3c, 3d and left-right connecting members 5a, 5b of one rack can be inserted into the space between the front supports 3a, 3b of the other rack.

The arm rail 11 is made of, for example, a metal square pipe. The front connecting portion 12 and the rear connecting portion 14 are also made of, for example, a metal square pipe. Furthermore, the arm rail 11 has a rail 18 on the outer side. The rail 18 is formed along the longitudinal direction (front-rear direction) of the arm rail 11, and is made, for example, as a shelf-like (plate-like) rail that protrudes outward from the side of the arm rail 11. This rail 18 is for allowing the wheels 35 described later to roll in the front-rear direction, and as shown in FIG. 3, it is inclined downward from the rear side to the front side of the arm rail 11. In the following, in the left-right direction, the surfaces where the two arm rails 11 face each other are referred to as the inner side of each arm rail 11, and the opposite surface is referred to as the outer side of each arm rail 11.

The front connecting part 12 is fixed to the outer side of the arm bar 11 at the front end 11a of the arm bar 11 by welding or the like, and extends in a direction perpendicular to the arm bar 11 (left-right direction). The tip of the front connecting part 12 is provided with an attachment part 13 for attachment to the front columns 3a, 3b. For example, a plurality of engagement holes 9 are formed at a predetermined interval in the vertical direction on at least the front side of the front columns 3a, 3b and the rear columns 3c, 3d. On the other hand, the attachment part 13 is formed with a claw piece 13a that engages with the engagement hole 9. Therefore, the attachment part 13 is fixed to the front columns 3a, 3b by fitting the claw piece 13a of the attachment part 13 into the engagement hole 9 at the desired height position.

The rear connecting part 14 is fixed to the inner side of the arm bar 11 at the rear end 11b of the arm bar 11 by welding or the like, and extends in a direction perpendicular to the arm bar 11 (left-right direction). The tip of the rear connecting part 14 is provided with an attachment part 15 for attachment to the rear supports 3c, 3d. The attachment part 15 is formed with a claw piece that engages with the engagement hole 9 of the rear supports 3c, 3d, just like the attachment part 13, and the attachment part 15 is fixed to the rear supports 3c, 3d by fitting the claw piece into the engagement hole 9 at the same height as the attachment part 13.

The left connecting member 5a and the right connecting member 5b are attached to the front columns 3a, 3b and the rear columns 3c, 3d at the same height. This allows the load shelf 4 to be supported horizontally by the front columns 3a, 3b and the rear columns 3c, 3d.

The cross members 6 extend in the left-right direction while being installed on the left connecting member 5a and the right connecting member 5b, and together with both connecting members 5a, 5b form a shelf. For example, as shown in FIG. 2, the cross members 6 are made of metal square pipes or the like, and are arranged in multiple locations in the front-to-rear direction relative to the left connecting member 5a and the right connecting member 5b. FIG. 2 shows an example in which the cross members 6 are arranged in three locations: the front, center, and rear.

The holding mechanism 7 holds the cross member 6 in a horizontal position on the left connecting member 5a and the right connecting member 5b. The holding mechanism 7 is provided on each of the left connecting member 5a and the right connecting member 5b. The holding mechanism 7 provided on the left connecting member 5a and the holding mechanism 7 provided on the right connecting member 5b have bilaterally symmetrical shapes. In other words, the holding mechanism 7 provided on the left connecting member 5a and the holding mechanism 7 provided on the right connecting member 5b have the same configuration, except for the bilaterally symmetrical shapes.

The holding mechanism 7 includes a first holding member 20 that holds two cross members 6 arranged at the center and rear side between the two connecting members 5a, 5b, and a second holding member 30 that holds the cross member 6 arranged at the front side. The first holding member 20 and the second holding member 30 are connected to each other so as to be able to rotate relative to each other at the intermediate part in the fore-and-aft direction of the arm crosspiece 11 (approximately the center in the illustrated example).

The first retaining member 20 extends in the front-rear direction from the center of the arm rail 11 to a predetermined position on the rear side, and is arranged so as to overlap the upper surface of the arm rail 11. The first retaining member 20 has a flat plate portion 21 having a length of about half that of the arm rail 11 in the front-rear direction, and an outer plate portion 22 and an inner plate portion 23 hanging down from both the left and right ends of the flat plate portion 21. The width in the left-right direction of the flat plate portion 21 is approximately equal to the width dimension of the upper surface of the arm rail 11 of the connecting member 5. Therefore, when the lower surface of the flat plate portion 21 is arranged in a state where it is joined to the upper surface of the arm rail 11, the outer plate portion 22 is arranged so as to follow the outer side surface of the arm rail 11, and the inner plate portion 23 is arranged so as to follow the inner side surface of the arm rail 11. One end of the cross member 6 is fixed to the inner plate portion 23 by welding or the like. For example, as shown in FIG. 2, one end of two cross members 6 arranged in the center and on the rear side is fixed to the inner plate portion 23 of the first retaining member 20.

The first holding member 20 is rotatably held by, for example, the rear end of the outer plate portion 22 by a first pivot portion 24 provided on the rear end side of the arm rail 11. Therefore, the first holding member 20 can rotate around a rotation axis L1 centered on the first pivot portion 24.

The first holding member 20 also has a connecting portion 25 attached to the front end. This connecting portion 25 constitutes a pivot piece that rotatably connects the second holding member 30, for example, on the outside of the arm bar 11. The connecting portion 25 has a plate-shaped portion that extends upward on the outside of the arm bar 11, and has a second pivot portion 26 on the plate-shaped portion. This second pivot portion 26 is provided in the center of the arm bar 11 in the front-rear direction. The connecting portion 25 then rotatably connects the rear end portion 30a of the second holding member 30 to the second pivot portion 26.

The second holding member 30 extends in the front-rear direction from the center of the arm bar 11 to a predetermined position on the front side. As described above, the rear end 30a of the second holding member 30 is connected to the connecting portion 25 via the second pivot portion 26, and is therefore rotatable around the rotation axis L2 centered on the second pivot portion 26. The second holding member 30 then extends forward from the second pivot portion 26.

The second retaining member 30 has a flat plate portion 31 at its front end 30b that extends in the left-right direction so as to join to the upper surface of the arm rail 11, and an inner plate portion 32 that is arranged so that the tip of the flat plate portion 31 hangs down and follows the inner side surface of the arm rail 11, and both ends of the cross member 6 arranged on the forward side are fixed to the inner plate portion 32 by welding or the like. When the flat plate portion 31 is joined to the upper surface of the arm rail 11, the forward cross member 6 fixed to the inner plate portion 32 is held at the same height as the central and rear cross members 6, 6 held by the first retaining member 20.

The second holding member 30 also has a wheel holding portion 33 at the front end 30b that holds the wheel 35. This wheel holding portion 33 is formed, for example, by hanging the base end side of the flat plate portion 31 down along the outer surface of the arm crosspiece 11. As shown in the enlarged view A of FIG. 2, the wheel holding portion 33 rotatably holds the wheel 35 that rolls along the rail 18 of the arm crosspiece 11 via the bearing portion 34. Therefore, the second holding portion 30 is rotatable around the rotation axis L3 centered on the bearing portion 34.

As shown in FIG. 3, the load receiving shelf 4 configured as described above has the rotation axis L2 of the second pivot part 26 connecting the first holding member 20 and the second holding member 30 located above the line L4 connecting the rotation axis L1 of the first pivot part 24 and the rotation axis L3 of the wheel 35. Therefore, as shown in FIG. 4, when a force F1 acting from the front side toward the rear acts on the front cross member 6, the holding mechanism 7 is easily bent and displaced into a mountain shape. In other words, the force F1 acting on the front cross member 6 generates a force F2 that lifts the second pivot part 26 upward, and the holding mechanism 7 can be displaced from a horizontal position in which it is linearly deployed to a folded position in which it is bent into a mountain shape. When the force F1 is released, the holding mechanism 7 returns from the folded position to the horizontal position by its own weight.

Specifically, when the front cross member 6 moves rearward due to force F1, the wheels 35 roll rearward on the rails 18, generating force F2 that lifts the rear end of the second holding member 30. As a result, the second holding member 30 rotates in a direction in which the rear end is lifted around the rotation axis L3 that moves with the wheels 35. At the same time, the first holding member 20 rotates around the rotation axis L1 as the tip end pivoted to the second pivot portion 26 is lifted, and as a result, the rear end of the second holding member 30 and the tip end of the first holding member 20 rotate around the rotation axis L2 relative to each other, bending the first holding member 20 into a mountain shape and displacing from a horizontal position to an upright position. Then, when the cross member 6 is further pushed rearward, the holding mechanism 7 is stored together with the cross member 6 in a folded state near the rear supports 3c, 3d.

Therefore, when nesting multiple nesting racks 1 in this embodiment while not in use, there is no need to remove the load receiving shelves 4, and nesting work can be performed with the load receiving shelves 4 positioned in a horizontal position.

The cargo receiving shelf 4, which constitutes the cargo loading means of the nesting rack 1, is used to support the loaded pallets. For this reason, in the illustrated embodiment, the flat plate portion 21 of the first holding member 20 and the flat plate portion 31 of the second holding member 30 are overlapped on the arm rail 11, respectively, to provide a loading surface formed almost flat on the upper surface of the arm rail 11. The loading surface is expanded by making the upper surface of the cross member 6 almost flush with the upper surface of the arm rail 11. As a result, in the illustrated example, the load of the pallet is mainly supported by the connecting members 5a and 5b equipped with the arm rail 11. However, it should be understood that the structure for supporting the load is determined in relation to the strength of the material, size, shape, etc., and is not the object of the present invention.

Figure 5 shows an example of nesting work when not in use. For example, when nesting a nesting rack 1b inside a nesting rack 1a, insert the fork 90 of a forklift under the base part 2 of the nesting rack 1b and lift the nesting rack 1b. In this state, when the nesting rack 1b is inserted between a pair of front supports 3a, 3b of the nesting rack 1a and moved in the X direction, the rear supports 3c, 3d of the nesting rack 1b push the cross member 6 arranged on the front side of the load receiving shelf 4 to the rear side. As a result, the holding mechanism 7 of the nesting rack 1a is displaced from a horizontal position to a mountain shape, and the cross member 6 arranged between the left connecting member 5a and the right connecting member 5b can be stored on the rear side of the nesting rack 1a. In other words, in this embodiment, if nesting rack 1b is nested inside nesting rack 1a, the load receiving shelf 4 can be stored in the rear in conjunction with this, so there is no need to perform a separate operation to store load receiving shelf 4 in the rear.

The holding mechanism 7, which includes the first holding member 20 and the second holding member 30, is positioned in the same position as the arm bar 11 in the left-right direction, and the arm bar 11 is positioned outside the rear supports 3c, 3d and inside the front supports 3a, 3b. Therefore, when the holding mechanism 7 is displaced from a horizontal position to a mountain shape, the first holding member 20 and the second holding member 30 can each be displaced to an upright position above the arm bar 11. This allows the rear supports 3c, 3d of the nesting rack 1b to not interfere with the first holding member 20 and the second holding member 30, and allows the holding mechanism 7 to smoothly change position.

Figure 6 shows three nesting racks 1a, 1b, and 1c nested together. As shown in Figure 6, when nesting three nesting racks 1a, 1b, and 1c, the worker must previously remove the middle shelf from each of the three nesting racks and store it at the rear. In contrast, in this embodiment, the three nesting racks 1a, 1b, and 1c can be nested as they are without such troublesome work, improving work efficiency. In particular, the effect becomes more pronounced the more the number of nesting racks 1 to be nested increases.

On the other hand, when using the nested nesting racks 1, the top nesting rack 1 can be lifted and pulled out with a forklift or the like. When the top nesting rack 1 is pulled out, the nesting rack 1 arranged below it automatically returns the holding mechanism 7 to a horizontal position. That is, the rail 18 on which the wheels 35 are placed is inclined downward from the rear side to the front side of the arm crosspiece 11, so when the upper nesting rack 1 pressing the load receiving shelf 4 to the rear side is pulled out, the wheels 35 roll toward the front side of the arm crosspiece 11 due to the downward inclination of the rail 18. As a result, the holding mechanism 7 automatically returns from the folded state to its original horizontal position, and returns to its original state in which the cross member 6 crosses between the left connecting member 5a and the right connecting member 5b. Therefore, even when using the nested nesting racks 1, the worker does not need to return the load receiving shelf 4 to its original position by himself, which results in excellent work efficiency.

When automatically returning the holding mechanism 7 to a horizontal position, it is preferable to configure the nested nesting racks 1a and 1b so that the center of gravity of the folded load-receiving shelf 4 is located forward of the wheels 35 as shown in FIG. 6. This ensures that the holding mechanism 7 can be automatically returned.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment described above. In other words, the present invention includes various modifications of the embodiments described above.

For example, in the illustrated embodiment, the rail 18 is tilted downwardly forward to form a return means for returning the holding mechanism 7 from the folded position to the horizontal position, but such a return means may be formed by providing a spring on the first pivot portion 24 and/or the second pivot portion 26.

In the above embodiment, the cross member 6 is a metal square pipe. However, the cross member 6 is not limited to a square pipe. For example, the cross member 6 may be a plate-shaped member.

In the above embodiment, three cross members 6 are arranged between the left connecting member 5a and the right connecting member 5b. However, the number of cross members 6 is not limited to three, and may be two or more. For example, the first holding member 20 may hold at least one cross member 6, and the second holding member 30 may also hold at least one cross member 6.

In the above embodiment, the base portion 2 is provided as the bottom of the nesting rack 1. However, this is not limited to this. For example, the base portion 2 may be provided at the upper end of the nesting rack 1 to form a so-called "reverse nesting rack."

1 nesting rack 2 base 3a, 3b front support 3c, 3d rear support 4 load-receiving shelf 5 connecting member (left connecting member, right connecting member)
Description of the Reference Signs 5a: Left side connecting member 5b: Right side connecting member 6: Cross member 7: Retaining mechanism 9: Engagement hole 11: Arm crosspiece 11a: Front end 11b: Rear end 12: Front connecting portion 13: Attachment portion 13a: Engagement claw 14: Rear connecting portion 15: Attachment portion 18: Rail 20: First retaining member 21: Flat plate portion 22: Outer plate portion 23: Inner plate portion 24: First pivot portion 25: Connecting portion 26: Second pivot portion 30: Second retaining member 30a: Rear end portion 30b: Front end portion 31: Flat plate portion 32: Inner plate portion 33: Wheel retaining portion 34: Bearing portion 35: Wheel

Claims (4)

A nesting rack (1) in which a pair of front support columns (3a, 3b) are erected at a predetermined interval on the front side of a base portion (2), and a pair of rear support columns (3c, 3d) are erected at a rear side of the base portion (2) at an interval narrower than the predetermined interval, and another nesting rack can be nested in a nested manner between the pair of front support columns (3a, 3b),
A left connecting member (5a) and a right connecting member (5b) are fixedly installed along a predetermined line (L4) extending in the front-rear direction at a position spaced apart in the left-right direction so as not to interfere with the nesting, and a cross member (6) is arranged between the left connecting member and the right connecting member to form a load-receiving shelf (4) . A holding mechanism (7) is provided to hold both ends of the cross member (6) to the left connecting member (5a) and the right connecting member (5b).
The holding mechanism (7) includes a first holding member (20) and a second holding member (30) that hold at least one cross member (6) and are disposed on the rear side and the front side of the central portion of the left connecting member (5a) and the right connecting member (5b), respectively, and both holding members (20) and (30) are rotatably connected to each other by a pivot portion (26) .
a rear end of the first holding member (20) is rotatably connected to a fixed point on the predetermined line (L4), a front end of the second holding member (30) is disposed on the predetermined line (L4) so as to be movable in the front-rear direction and rotatable thereon, and a pivot portion (26) of the holding members (20) and (30) is disposed above the predetermined line (L4) ;
When the cross member (6) of the second holding member (30) is pushed in by a force F1 from the front side to the rear, the first holding member (20) and the second holding member (30) are bent in a mountain shape via the pivot portion (26), and the second holding member (30) is moved rearward, so that the holding mechanism (7) is folded at a position near the rear support columns (3c, 3d) . 2. The nesting rack according to claim 1, wherein the first holding member (20) has an upward connecting portion (25) at a front end thereof, and a pivot portion (26) that connects the first holding member (20) and the second holding member (30) is provided at the connecting portion (25), so that the pivot portion (26) is positioned above the specified line (L4) . 3. The nesting rack according to claim 1 or 2, wherein the left connecting member (5a) and the right connecting member (5b) have rails (18) extending in the front-rear direction, and wheels (35) are provided at the front end of the second holding member (30), and the wheels (35) are installed on the rails (18) so as to be freely rollable . 4. The nesting rack according to claim 3, wherein the rail (18) is inclined downward from the rear to the front.

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