TW201813897A - Storage shelf - Google Patents

Abstract

To provide a storage shelf having a simple configuration which can prevent a container from falling from a shelf board. A storage shelf 100 for storing a container 5, which has a flange 5b at the top of the body 5a, is equipped with a fall prevention member 30 which is disposed in front of the flange 5b and above the body 5a of the container 5 placed on a shelf board 10, and which has a space K that allows the flange 5b to pass thereover.

Description

   Storage rack   

The present invention relates to a storage rack.

Containers for FOUP (Front Opening Unified Pod), SMIF Pod (Standard Mechanical Interface), Reticle Pod, etc. for wafers or reticles It is stored in a storage rack such as an automatic warehouse. The storage rack includes, for example, a plurality of shelves arranged in the vertical direction, and the containers are placed on each shelf to store the containers. Each shelf is provided with pins inserted into a plurality of radial grooves provided at the bottom of the container. Each container is provided with a groove portion on the bottom surface, and is positioned on the shelf by being inserted into the groove portion by a pin of the shelf. In recent years, it has been required that the container does not fall off the shelf when a vibration occurs, such as an earthquake. Patent Literature 1 describes a configuration in which a shelf is provided with a fall prevention member that is locked to a bottom flange of a container.

    [Prior technical literature]         [Patent Literature]    

[Patent Document 1] Japanese Patent Laid-Open No. 2009-196748

However, in order to apply the aforementioned fall prevention member to a plurality of containers having different shapes such as a bottom flange in common, it is necessary to increase a space for allowing the container to pass when the container is taken out or put into the container. As a result, the gap between the bottom flange and the fall-prevention member becomes large, and when the vibration is generated, the container is greatly inclined, and there is a possibility that the container may cause a large impact and may even cause the container to fall from the shelf. In addition, since the aforementioned fall prevention member is provided on the shelf because it protrudes greatly, the storage space of the container is reduced accordingly, thereby reducing space efficiency.

In view of the foregoing, an object of the present invention is to provide a storage rack capable of preventing a container from falling off a shelf with a simple structure.

The storage rack of the present invention is a holder who holds a container having a flange on the upper portion of the main body portion, and has a fall prevention member which is arranged above the main body portion of the container placed on the shelf and Before the flange, there is space for the flange to pass above.

In addition, the container may have a lid portion detachably mounted on the side and an upper portion protruding upward from the main body portion, and the fall prevention member is disposed behind the upper portion of the lid portion. In addition, a plurality of shelves may be provided in the up-down direction, and the fall-prevention member is an L-shaped member arranged so as to hang from the shelf on the upper layer. Also, the fall prevention member may be formed by bending a part of the upper shelf.

Further, the fall prevention member may include a horizontal portion and a vertical portion extending upward from the outside of the horizontal portion and connected to a shelf of the upper layer. The horizontal portion may be disposed at the same or substantially the same height as the flange of the container placed on the shelf. In addition, the shape of the portion of the horizontal portion facing the flange may be formed corresponding to the shape of the flange. Moreover, the shelf may be provided with the notch part which cut | disconnected the center part of the left-right direction orthogonal to the front-back direction, and a fall prevention member was provided in the both sides of the notch part which were provided in the upper shelf.

In the storage rack of the present invention, when the container is tipped to the front side due to an earthquake or the like, the front side of the flange may collide with an anti-falling member to prevent the container from shifting or falling. In addition, when the container is dumped to the rear side, a part of the container may collide with the falling prevention member to prevent the container from being shifted or toppled. Thereby, the container can be prevented from falling from the shelf with a simple structure. In addition, since there is a space for the flange to pass through, it is possible to prevent the flange or the body of the container from interfering with the fall prevention member when the container is transferred to the shelf, so that the fall prevention member does not Become an obstacle to container transfer.

Further, in a case where the container has a lid portion and the fall prevention member is disposed behind the upper portion of the lid portion, the fall prevention member may hit the upper portion of the lid portion or the body of the container even when the container is tilted toward the back side. The upper surface of the container prevents the container from shifting or falling down, thereby reliably preventing the container from falling off the shelf. When a plurality of shelves are provided in the up-down direction and the fall-preventing member is an L-shaped member arranged so as to be suspended from a shelf on the upper stage, the prevention of the fall can be easily performed with a simple structure. Drop the component. In addition, when the fall-prevention member is formed by bending a part of the upper shelf, the fall-prevention member can be easily formed without using an installation tool or the like.

In the case where the fall prevention member has a horizontal portion and a vertical portion extending upward from the outside of the horizontal portion and connected to the upper shelf, the vertical portion can easily form a space for the flange to pass through. When the horizontal portion is arranged at the same or substantially the same height as the flange of the container placed on the shelf, the flange can be more reliably supported by the horizontal portion when the container is tilted forward. When the shape of the portion of the horizontal portion facing the flange corresponds to the shape of the flange, the horizontal portion may be arranged near the flange. In addition, when the shelf includes a notch portion that cuts off a central portion in the left-right direction orthogonal to the front-rear direction and the fall-prevention member is provided on both sides of the notch portion between the shelves on the upper stage, By using a pair of fall prevention members, the container is more reliably prevented from falling.

5‧‧‧ container

5a‧‧‧Body

5b‧‧‧ flange

5c‧‧‧ cover

5d‧‧‧inclined

5e‧‧‧ flange fixing part

10‧‧‧ Shelves

11‧‧‧ gap

12‧‧‧ placement section

12a‧‧‧pin

13‧‧‧Fixed components

20‧‧‧ pillar

30‧‧‧fall-proof member

31‧‧‧ vertical section

32‧‧‧Horizontal

32a‧‧‧ protrusion

32d‧‧‧inclined support

40‧‧‧ transfer device

100‧‧‧Storage rack

H1, H2‧‧‧ height

K‧‧‧ space

X, Y, Z‧‧‧ axis

FIG. 1 is a diagram showing an example of a storage rack according to this embodiment.

Figure 2 is a side view of the storage rack.

Figure 3 is a front view of the storage rack.

Fig. 4 is a plan view of a storage rack.

FIG. 5 is an enlarged perspective view showing an example of the fall prevention member.

Fig. 6 shows an example of the operation of transferring a container to a storage rack. Fig. 6 (A) is a diagram showing a state before the container passes the fall prevention member, and Fig. 6 (B) is a state after the container passes the fall prevention member. FIG. 6 (C) is a view showing a state where a container is placed.

FIG. 7 shows a container stored in a storage rack, FIG. 7 (A) is a view showing a state where the container is tilted forward, and FIG. 7 (B) is a view showing a state where the container is dumped backward.

Hereinafter, embodiments will be described with reference to the drawings. In addition, in the drawings, in order to explain the embodiment, a part is enlarged or emphasized and described, etc., and the ratio is appropriately changed and presented. In each of the following figures, the directions in the figures are described using the XYZ coordinate system. In this XYZ coordinate system, the vertical direction is set to the Z direction, and the horizontal direction is set to the X direction and the Y direction. For each of the X direction, the Y direction, and the Z direction, the arrow direction in the figure is described as the + direction, and the direction opposite to the arrow direction is described as the-direction.

FIG. 1 is a diagram schematically showing an example of a storage rack 100 according to this embodiment. FIG. 2 is a side view of the storage rack 100. FIG. 3 is a front view of the storage rack 100. FIG. 4 is a plan view of the storage rack 100. As shown in FIG. 1 to FIG. 4, the storage rack 100 is, for example, an automatic warehouse for storing a plurality of containers 5, or a storage device that is arranged near a processing device or is arranged along a movement path of an overhead transport vehicle to store the containers 5 Wait. Although the container 5 is shown as a FOUP for accommodating a wafer used for the manufacture of a semiconductor element or a mask, for example, the container 5 is not limited to this, and may be a SMIF Pod, a mask box, or the like. In this embodiment, the container 5 includes a main body portion 5a, a flange 5b, and a lid portion 5c.

The main body portion 5a is, for example, a box shape having a space portion capable of accommodating an article therein, and has an opening portion on a front side surface. In the main body portion 5a, articles can be stored and taken out through the opening portion. The flange 5b is arranged above the main body portion 5a. The flange 5b is formed in a rectangular plate shape, for example, and an inclined portion (chamfered portion or cutout portion) 5d is provided at a corner portion (see FIG. 5). The flange 5b is fixed to the upper surface of the main body part 5a via the flange fixing part 5e. Therefore, a state in which a gap corresponding to the height of the flange fixing portion 5e occurs between the flange 5b and the main body portion 5a.

The cover portion 5c is attached to close the opening portion of the main body portion 5a, and is attachable and detachable to and from the main body portion 5a. The upper portion of the cover portion 5c protrudes upward from the main body portion 5a. Moreover, when the cover part 5c protrudes upward from the main-body part 5a, the part which covers this protrusion part may be provided in the main-body part 5a.

As shown in FIGS. 1 to 4, the storage rack 100 includes a plurality of shelves 10, a pillar portion 20, and a fall prevention member 30. The storage rack 100 may be provided with a plurality of purification devices (not shown) for supplying a purge gas into the container 5 when the container 5 is placed on the shelf 10, and may also include a transfer device for transferring the container 5. Devices (such as stacking cranes, etc.).

As shown in FIG. 2 and FIG. 3, the shelf 10 is arrange | positioned in the up-down direction (Z direction), and several layers are arrange | positioned. Each of the shelves 10 is arranged in a substantially horizontal direction, and is arranged at substantially regular intervals in the vertical direction. Further, the shelf 10 may be arranged in a plurality of layers along the up-down direction, and may also be arranged in a horizontal direction (X direction) to be arranged in a plurality. The shelf 10 may be provided in only one layer.

As shown in FIG. 2, the plurality of shelves 10 are fixed to the pillar portion 20 by fixing members 13 such as bolts. The plurality of shelves 10 each include a notch portion 11 (see FIG. 1) and a placing portion 12. The cutout portion 11 is provided by cutting out a center portion of the shelf 10 in a left-right direction (X direction) orthogonal to the front-rear direction (Y direction). The cutout portion 11 is a size that allows a portion of the transfer device 40 (see FIG. 6) (the portion on which the container 5 is placed) to pass in a vertical direction.

As shown in FIG. 4, the placing portion 12 extends in the front-rear direction, and is disposed on the left and right with the notch portion 11 interposed therebetween. The mounting portion 12 is formed in a plate shape from a material such as metal, and the end side of the outer side in the left-right direction is bent downward (-Z direction). The container 5 can be placed between the placement portions 12 on both sides of the cutout portion 11. The mounting portion 12 includes a plurality of pins 12 a on the upper surface. When the container 5 is placed on the placing portion 12, the pins 12 a are inserted into a plurality of radial groove portions provided at the bottom of the container 5. Each pin 12a is inserted into each groove part, thereby positioning the container 5 on the shelf 10 (mounting part 12). Moreover, the mounting part 12 may be comprised so that the edge part of the back side (+ Y side) of the shelf 10 may be connected to each other in the left-right direction. In this case, the pin 12a may be provided on the upper surface of the connection portion.

The pillar portions 20 are provided at regular intervals along the X direction, for example. A shelf 10 may be formed between the pillar portions 20. The pillar portion 20 extends in the up-down direction (Z direction), and is arranged so as to sandwich the left and right sides of each of the shelves 10. The pillar portion 20 supports an end portion on the back side (+ Y side) of the shelf 10. In addition, the pillar part 20 may be arrange | positioned so that the side of the front side (-Y side) of the shelf 10 may be supported. The shelf 10 is not limited to being supported by the pillar portion 20, and may be mounted on a panel or the like, for example.

When the container 5 falls forward, the anti-falling member 30 restricts the container 5 from falling forward further by supporting a part of the container 5 such as the flange 5b, and prevents the container 5 from falling down. As shown in FIG. 1, FIG. 3, and FIG. 4, the fall prevention members 30 are respectively provided on the mounting portions 12 on both sides of the shelf 10 with the notch portion 11 therebetween. As shown in FIGS. 1 to 3, the fall preventing member 30 is provided so as to hang down from the shelf 10 on the upper stage with respect to the shelf 10 on which the container 5 is placed. The fall prevention member 30 is provided in the state which bent one part of the plate-shaped member which comprises the mounting part 12 downward, for example.

The fall prevention member 30 includes a vertical portion 31 and a horizontal portion 32. The vertical portion 31 is a portion connected to the placing portion 12 of the shelf 10 and extending downward (-Z direction). The horizontal portion 32 is provided at the lower end of the vertical portion 31 and is arranged in parallel or substantially parallel to a horizontal plane (XY plane). The two horizontal portions 32 are formed to face each other. The fall prevention member 30 is an L-shaped member which is arrange | positioned so that it may fall from the shelf 10 of an upper stage when seen from the front-back direction.

As shown in FIG. 2, the horizontal portion 32 is, for example, disposed at a position (the distance in the Z direction) from the placement portion 12 that is the same as or substantially the same as the flange 5 b. Therefore, the horizontal portion 32 is positioned above the main body portion 5 a (+ Z side) and in front of the flange 5 b (−Y side) in a state where the container 5 is placed on the mounting portion 12 of the shelf 10. Thereby, when the container 5 is tilted forward, the horizontal portion 32 hits the flange 5b, and the container 5 is supported so that it does not fall further forward.

The thickness (plate thickness) of the vertical portion 31 and the horizontal portion 32 is arbitrary. However, when the container 5 is transferred, the horizontal portion 32 must allow a portion between the upper surface of the main body portion 5a and the lower surface of the flange 5b to pass. Therefore, the thicknesses of the vertical portion 31 and the horizontal portion 32 are set to be smaller than the interval between the main body portion 5a and the flange 5b.

Above the horizontal portion 32, there is formed a space K through which the flange 5b can pass when the container 5 is accommodated in the shelf 10 or when the container 5 is taken out of the shelf 10. By providing the space K, it is possible to prevent the flange 5b or the main body portion 5a from interfering with the fall prevention member 30 when the container 5 is transferred with respect to the shelf 10, so that the fall prevention member 30 does not become Barrier to container 5 transfer. The distance between the two horizontal portions 32 is set to be larger than the width of the flange fixing portion 5e. Thereby, when the flange 5b passes through the space K above the horizontal portion 32, the flange fixing portion 5e can pass between the two horizontal portions 32, and interference between the flange fixing portion 5e and the horizontal portion 32 can be avoided.

As shown in FIG. 4, the horizontal portion 32 has a protruding portion 32 a protruding toward the back side (+ Y side) of the shelf 10. FIG. 5 is an enlarged perspective view showing an example of the fall prevention member 30. As shown in FIG. 5, the protruding portion 32 a is disposed so as to face a part of the flange 5 b. The protruding portion 32 a has, for example, a shape in which an end portion on the inner side of the horizontal portion 32 extends inward (+ Y direction).

An inclined support portion 32d having a shape corresponding to the inclined portion 5d is formed in a portion of the protruding portion 32a that faces the inclined portion 5d of the flange 5b. The inclined support portion 32d of the horizontal portion 32 is disposed near the inclined portion 5d of the flange 5b with a predetermined gap therebetween, and is disposed at the same or substantially the same height as the inclined portion 5d. The horizontal portion 32 can be disposed closer to the flange 5b by having the protruding portion 32a and the inclined support portion 32d. However, the predetermined gap mentioned above takes into consideration the error of the size of the flange 5b caused by the individual difference of the container 5, and the transfer error when the container 5 is transferred by the transfer device 40, etc., and in order to make the flange 5b and the tilt The support portion 32d is set to, for example, several mm to several cm without causing interference.

As shown in FIG. 4, two fall prevention members 30 are provided symmetrically with respect to the YZ plane. Therefore, each fall prevention member 30 has a tilt support part 32d. For example, when the container 5 is tilted forward, the two inclined portions 5d of the flange 5b are supported by the inclined support portions 32d, respectively. As a result, the container 5 is restricted from being tilted forward, and the flange 5b is prevented from entering the two inclined support portions 32d, and the container 5 is prevented from moving in the left-right direction (X direction).

In this way, by supporting the two inclined portions 5d of 5b of the flange with two inclined support portions 32d, when the storage rack 100 is shaken in the left-right direction in addition to the forward-backward swing, even if the swing direction changes It can also prevent the container 5 from falling down. However, it is optional whether or not the inclined support portion 32d is provided on the fall prevention member 30, and the inclined support portion 32d may not be provided.

FIG. 6 is a diagram showing an example of an operation when the container 5 is stored in the storage rack 100 by the transfer device 40. In FIG. 6, a part of the structure such as the pillar portion 20 is omitted. When the container 5 is stored, first, as shown in FIG. 6 (A), the container 5 is inserted between the upper and lower shelves 10 in a state where the container 5 is placed on the transfer device 40.

At this time, the height position (position in the Z direction) of the container 5 is adjusted so that the horizontal portion 32 is positioned between the upper surface (height H1) of the main body portion 5a and the lower surface (height H2) of the flange 5b. The container 5 moves in the + Y direction. Thereby, the flange 5b passes through the space K above the horizontal portion 32, and the flange fixing portion 5e passes between the two horizontal portions 32 at substantially the same time, so that the container 5 is moved inward. In this way, the insertion of the container 5 above the shelf 10 is completed so that the container 5 does not interfere with the fall prevention member 30.

When the container 5 is disposed at the insertion position, the horizontal portion 32 of the fall prevention member 30 is disposed between the flange 5 b and the lid portion 5 c in the Y direction. Moreover, as shown in FIG. 6 (A), although the container 5 is placed on the transfer device 40 and inserted above the shelf 10, the pin 12a protrudes upward as described above on the shelf 10, Therefore, the height of the container 5 at the time of insertion is set to a height at which the lower portion of the container 5 does not interfere with the pin 12a.

Next, as shown in FIG. 6 (B), the transfer device 40 is lowered and the container 5 is passed through the cutout portion 11. By using the transfer device 40 to pass the container 5 through the notch portion 11, the container 5 is placed on the placement portion 12 of the shelf 10, and the transfer of the container 5 from the transfer device 40 to the shelf 10 is ended. In addition, when the container 5 is placed on the shelf 10, the pin 12a is inserted into a groove portion (not shown) provided at the bottom of the container 5 so that the container 5 is horizontal to the placement portion 12 (X direction and Y Direction). In addition, since the container 5 is lowered in a state where the horizontal portion 32 is disposed between the flange 5b and the lid portion 5c, the container 5 is in such a manner that the horizontal portion 32 and the container 5 (flange 5b, etc.) do not interfere, such as As shown in FIG. 6 (C), it is placed on the placing section 12.

In a state where the container 5 is placed on the placement portion 12, the horizontal portion 32 is disposed between the flange 5 b and the cover portion 5 c in the Y direction, and is disposed at substantially the same height as the flange 5 b (the Z direction). Location). In addition, the transfer device 40 after placing the container 5 on the mounting portion 12 moves away from the storage rack 100, for example, while maintaining the lowered height in the -Y direction.

When the container 5 placed on the placing section 12 is taken out by the transfer device 40, the operation opposite to the above description is performed. For example, the transfer device 40 is inserted below the shelf 10 at a height lower than the target container 5. Next, a part of the transfer device 40 is raised through the cutout portion 11, whereby the container 5 is transferred from the placement portion 12 to the transfer device 40. Next, the transfer device 40 stops rising at a position where the flange 5b of the container 5 is higher than the horizontal portion 32 and the horizontal portion 32 is higher than the upper portion of the main body portion 5a, and moves in the -Y direction while maintaining the height. In the state shown in (A), the container 5 can be taken out of the storage rack 100.

FIG. 7 shows the container 5 stored in the storage rack 100, FIG. 7 (A) is a view showing a state in which the container 5 is tilted forward, and FIG. 7 (B) is a view showing a state in which the container 5 is dumped backward. When the storage rack 100 is shaken in the front-rear direction due to an earthquake or the like, the container 5 becomes a state where the pin 12a enters a groove portion (not shown) on the bottom surface and the bottom of the main body portion 5a is fixed to the mounting portion 12 in the horizontal direction. , So it tilts in such a way that it tilts towards the front or back. For example, as shown in FIG. 7 (A), when the container 5 is tilted to the front side, the horizontal portion 32 of the fall prevention member 30 is disposed in front of the flange 5b, so the horizontal portion 32 hits the flange. 5b supports the container 5. Thereby, it is possible to prevent the container 5 from being shifted toward the front side on the placement portion 12 or the container 5 is tipped forward and dropped from the shelf 10.

Further, for example, as shown in FIG. 7 (B), when the container 5 is tilted to the rear side, the horizontal portion 32 of the fall prevention member 30 is disposed behind the upper portion of the cover portion 5c. The container 5 is supported by hitting the upper portion of the lid portion 5c. Thereby, it is possible to prevent the container 5 from being shifted to the rear side on the placement portion 12 or the container 5 to be tipped to the rear. 7 (B) shows an example in which the upper portion of the cover portion 5c hits the horizontal portion 32, but it is not limited to this. The upper surface of the main body portion 5a of the container 5 may also touch the horizontal portion 32. In this case, it is possible to prevent the container 5 from falling backward in the same manner as described above.

As described above, according to the storage rack 100 according to the present embodiment, when the container 5 is tilted toward the front side, the flange 5b can collide with the fall prevention member 30, and the container 5 can be prevented from being displaced or tipped over. Moreover, when the container 5 is tipped to the rear side, a part of the container 5 may also hit the fall prevention member 30, so that the container 5 can be prevented from being shifted or toppled. Thereby, the container 5 can be prevented from falling from the shelf 10 with a simple structure. Furthermore, since the flange 5b passes through the space K above, it is possible to avoid interference between the flange 5b or the main body portion 5a of the container 5 and the fall prevention member 30 when the container 5 is transferred with respect to the shelf 10. The fall prevention member 30 is not an obstacle to container transfer.

In addition, since the storage rack 100 of this embodiment is disposed behind the upper portion 5C of the lid portion 5 of the container 5, even when the container 5 is tilted to the rear side, the drop prevention member 30 may hit The upper portion 5c of the lid portion or the upper surface of the main body portion 5a of the container 5 can prevent the container 5 from shifting or falling down, and can reliably prevent the container 5 from falling off the shelf 10. The container 5 may be a type in which the upper portion of the lid portion 5c does not protrude from the upper portion of the main body portion 5a. Even with the container 5 as described above, when the container 5 is tilted to the rear side, the upper surface of the main body portion 5a can touch the anti-falling member 30 to prevent the container 5 from shifting or falling.

As mentioned above, although embodiment of this invention was described, the technical scope of this invention is not limited to the said embodiment. For example, in the aforementioned embodiment, the storage rack 100 having a plurality of shelves 10 arranged along the top and bottom has been described as an example, but it may be a storage rack having only one shelf 10. Moreover, although the structure in which the fall prevention member 30 was arrange | positioned at the both sides of the mounting part 12 which sandwiched the notch part 11 was demonstrated as an example, it is not limited to this. For example, a structure in which the fall prevention member 30 is arranged only on any one of the mounting portions 12 may be adopted.

Moreover, in the aforementioned embodiment, although the fall preventing member 30 is an L-shaped member arranged so as to be suspended from the upper shelf 10, it is not limited to this shape, as long as it can be placed on the placed The shape before the flange 5b of the container 5 of the mounting part 12 is arbitrary. For example, the fall prevention member 30 may be attached to the pillar portion 20, or a shape other than the L-shape (for example, a curved shape) may be used.

Further, in the aforementioned embodiment, the fall preventing member 30 is formed by bending a part of the upper shelf 10, but it is not limited to this. For example, the fall-preventing member 30 made of metal, resin, or the like formed separately from the shelf 10 may be attached to the shelf 10 by a fastening member such as a fixing screw, or may be fixed by welding or the like.于 架 架 10。 Shelves 10. When the fall-prevention member 30 is mounted on the shelf 10 using a fixing screw or the like, a long hole or a plurality of through holes may be formed in the fall-prevention member 30 in advance, and the fixing screw or the like may be adjusted in the horizontal direction. A fixed position of the fixed fall preventing member 30. Thereby, the interval in the horizontal direction between the two fall prevention members 30 can be easily adjusted.

In the aforementioned embodiment, although the space K is formed by the vertical portion 31 and the horizontal portion 32 of the fall prevention member 30, the size of the space K may be changed. For example, as described above, the width of the space K in the left-right direction can be changed by adjusting the fixed position of the fall prevention member 30 (vertical portion 31). In addition, the vertical portion 31 and the horizontal portion 32 are separately configured, and the horizontal portion 32 can be moved relative to the vertical portion 31, so that the interval in the vertical direction of the space K can be changed.

Moreover, although the structure which provided the fall prevention member 30 in the storage rack 100 was shown in the said embodiment, the structure for preventing the container 5 from falling etc. may be attached to the storage rack 100. For example, the storage rack 100 may be provided with a fall prevention member 30 and the bottom flange of the holding container 5 attached to the shelf 10, or may be provided before the mounting portion 12 of the shelf 10 is attached. The side is inclined upward. By forming a plurality of fall prevention measures as described above, the container 5 is reliably prevented from falling.

In the aforementioned embodiment, the horizontal portion 32 of the fall prevention member 30 is disposed at the same or substantially the same height as the flange 5 b of the container 5 placed on the shelf 10. Here, the substantially same height means, for example, the height at which the horizontal portion 32 can hit the flange 5 b when the container 5 is tilted forward. Therefore, the height of the horizontal portion 32 can also be determined by the distance between the flange 5 b of the container 5 placed on the shelf 10 and the horizontal portion 32. For example, the horizontal portion 32 may be higher than the height of the flange 5b, or may be lower than the height of the flange 5b.

Moreover, in the said embodiment, although the structure of the horizontal part 32 of the fall prevention member 30 provided with the inclined support part 32d which opposes the inclined part 5d of the flange 5b was described as an example, it is not limited to this. this. For example, the inclined support portion 32d may have another shape or a configuration in which the inclined support portion 32d is not provided.

In the foregoing embodiment, the configuration in which the protruding portion 32a is provided on the horizontal portion 32 of the fall prevention member 30 has been described as an example, but the configuration is not limited to this, and the protruding portion 32a may not be provided. Of the composition. Moreover, although the structure provided as a part of the horizontal part 32 extended to the + Y side as an example was demonstrated as the protrusion part 32a, it is not limited to this structure, It can also be another structure. In addition, as long as it is within the scope permitted by law, the contents of Japanese Patent Application No. 2016-196217 and all documents cited in this specification can be used as part of the description in this specification.

Claims (8)

    A storage rack is used for storing a container having a flange on an upper portion of a main body portion. Such a storage rack includes a fall prevention member disposed on the main body of the container placed on a shelf. There is a space above the part and in front of the flange, so that the flange can pass above.         According to the storage rack of claim 1, wherein the container has a lid portion detachably mounted on the side and an upper portion protrudes upward from the main body portion, and the fall prevention member is disposed behind the upper portion of the lid portion.         In the storage rack of claim 1 or 2, the shelf is provided with a plurality of shelves in the up-down direction, and the fall prevention member is an L-shaped member arranged so as to hang from the shelf in the upper layer.         The storage rack of claim 3, wherein the above-mentioned fall prevention member is formed by bending a part of the above-mentioned shelf.         The storage rack according to claim 4, wherein the fall prevention member has a horizontal portion and a vertical portion extending upward from the outside of the horizontal portion and connected to the shelf of the upper layer.         In the storage rack according to claim 5, wherein the horizontal portion is disposed at the same or substantially the same height as the flange of the container placed on the shelf.         The storage rack according to claim 6, wherein the shape of the horizontal portion and the portion facing the flange is formed corresponding to the shape of the flange.         In the storage rack of claim 3, wherein the shelf includes a cutout portion that cuts a central portion in the left-right direction orthogonal to the front-rear direction, and the fall-prevention member is sandwiched between the shelves on the upper level Both sides of the notch.