JP2014125221A - Pallet for transportation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pallet for transportation capable of suppressing the number of pallets for transportation required for transportation of battery packs, when mutually different kinds of battery packs are transported.SOLUTION: A pallet 10 for transportation includes: a substrate 11 made of a resin; a reinforcement frame 14 formed in a shape extending along the upper surface of the substrate 11, and mounted on the upper surface, for supplementing strength of the substrate 11; and a plurality of positioning blocks 20 for positioning battery packs. Each positioning block 20 is mounted on the reinforcement frame 14 so as to be able to be moved along the reinforcement frame and to be fixed to the reinforcement frame 14, moved to a position where the battery pack is to be positioned, and fixed to the reinforcement frame on the position.

Description

  The technology of the present disclosure relates to a transport pallet that transports a battery pack while being fixed.

  In the assembly line of the vehicle body on which the battery pack is mounted, the battery pack is transported to various processes such as a process of fastening the battery pack and the case for the vehicle body with bolts and a process of coupling the battery pack and the electrical component ( For example, see Patent Document 1). In a transfer pallet used for transferring a battery pack, a plurality of positioning blocks for fixing the battery pack are fixed to a resin substrate in order to reduce the weight of the transfer pallet. Each of the plurality of positioning blocks is disposed at a position where the battery pack comes into contact with the bottom surface of the battery pack, and is disposed at a position where the battery pack is raised to a preset height or is contacted with the side surface of the battery pack. To prevent the position from shifting.

JP 2011-59844 A

  By the way, when the mounting position of the battery pack on the vehicle body, the legal regulations related to the vehicle, or the performance required for the battery pack change, the size of the battery pack and the shape of the battery pack also change. On the other hand, in transporting battery packs having different shapes and sizes, pallets with different positioning block positions are usually used as transport pallets. Therefore, in a factory where battery packs are transported, it is necessary to change the type of transport pallet each time different types of battery packs are transported. In addition, since the number of types of battery packs is increasing in the current situation in which vehicles with battery packs are widely used, a large number of pallets for transportation are provided for each type of battery pack in factories where battery packs are transported. There is a need to expand the stock space for holding and storing a large number of pallets for transportation that are not used in the manufacture of battery packs.

  An object of the technology of the present disclosure is to provide a transfer pallet that can reduce the number of transfer pallets required for transferring battery packs when different types of battery packs are transferred. To do.

  A transport pallet that solves the above problem is a transport pallet that transports a battery pack in a fixed manner, and the transport pallet is formed in a shape extending along a resin substrate and the upper surface of the substrate. A reinforcing member attached to the upper surface and supplementing the strength of the substrate, and a plurality of positioning blocks for positioning the battery pack, the positioning block moves along the reinforcing member and is fixed to the reinforcing member. The battery pack is mounted on the reinforcing member as possible, and is moved to a position for positioning the battery pack and fixed to the reinforcing member at the position.

  Of the substrate of the transfer pallet, the portion below the positioning block is a portion that particularly receives the load of the battery pack and is a portion where the substrate is likely to warp. In this regard, according to the above configuration, since the positioning block is fixed to the reinforcing member, the reinforcing member is surely disposed in a portion of the substrate that is easily warped, and the warping of the substrate is reliably suppressed. Moreover, according to the above configuration, each of the plurality of positioning blocks is attached to the reinforcing member in a state that can be displaced by the reinforcing member. Therefore, it is possible to arrange the positioning blocks at different positions in accordance with both the battery pack to be transported this time and the battery pack to be transported next time. Therefore, since different types of battery packs can be transported by one transport pallet, transport required for transporting battery packs when transporting different types of battery packs is possible. The number of pallets for use can be reduced.

In the transport pallet, the reinforcing member is preferably a metal member mainly composed of aluminum.
In the above configuration, aluminum, which is a metal that is lighter and more workable than iron or copper, is the main component of the reinforcing member. Therefore, it is possible to reduce the weight of the reinforcing member and improve the workability of the reinforcing member, thereby reducing the weight of the transport pallet and improving the workability of the transport pallet.

In the pallet for conveyance, the reinforcing member is preferably a plurality of frames extending linearly along directions intersecting each other.
In the above configuration, since the extending directions of each of the plurality of frames intersect each other, the function of supplementing the strength of the substrate is enhanced in the reinforcing member as compared with the configuration in which the reinforcing member has a simple one-dimensional structure. The plurality of positioning blocks are two-dimensionally arranged along a plane including the plurality of frames, that is, along one side surface of the substrate. Therefore, since the plurality of positioning blocks are displaced along the two-dimensional direction, it is easy to arrange the positioning blocks according to different types of battery packs.

In the conveyance pallet, the positioning block is preferably fixed to the upper surface of the reinforcing member using a fastening member.
In the above configuration, since the positioning block is fastened to the upper surface of the reinforcing member, compared to the configuration in which the positioning block is fastened to the bottom surface of the reinforcing member or the side surface of the reinforcing member, It is easy to fasten again.

  In the conveying pallet, the positioning block includes a male screw as the fastening member, and the reinforcing member is formed with a groove that is continuous along a direction in which the reinforcing member extends, and the groove is formed along the groove. It is preferable that the movable block is accommodated and the positioning block is fixed to the reinforcing member by fastening the male screw and the female screw.

  In the above configuration, since the position where the positioning block is fastened continues along the direction in which the reinforcing member extends, the position where the positioning block is fastened is compared with the configuration where the positioning block is limited to a part of the reinforcing member. The degree of freedom of arrangement is increased.

  In the transfer pallet, it is preferable that the substrate is formed in a rectangular shape, and a suppression block is provided on at least a part of the upper surface of the peripheral edge of the substrate to prevent the other transfer pallet from climbing up.

  Each of the plurality of transport pallets is transported side by side on a conveyor, for example, in a line in which the battery pack is assembled. At this time, if the area of contact between the grounding surface of the transport pallet and the conveyor is different for each transport pallet, the speed at which the transport pallet is transported differs for each transport pallet, and the preceding transport pallet The substrate edge of the transfer pallet following the substrate edge rides up. Or the edge of the board | substrate of the conveyance pallet preceding the edge of the board | substrate of the subsequent conveyance pallet will run over. In this regard, in the above configuration, since the protrusion is provided at least at a part of the periphery of the substrate, the edge of the substrate of the transport pallet following the substrate edge of the preceding transport pallet rides on or follows. It is possible to suppress the edge of the substrate of the transfer pallet preceding the edge of the substrate of the transfer pallet.

  According to the technology of the present disclosure, when different types of battery packs are transported, the number of transport pallets required for transporting the battery packs can be reduced.

It is a perspective view which shows the perspective structure of the pallet for conveyance in 1st Embodiment in the technique of this indication. It is a disassembled perspective view which shows the disassembled perspective structure of the positioning block provided in the pallet for conveyance in 1st Embodiment. It is an operation | movement figure which shows the effect | action of the positioning block provided in the pallet for conveyance in 1st Embodiment, Comprising: The state which a positioning block moves along a reinforcement frame, and the state by which a positioning block is fixed to a reinforcement frame are shown FIG. It is a perspective view which shows the state by which the battery pack was mounted in the pallet for conveyance in 1st Embodiment. It is a perspective view which shows the perspective structure of the pallet for conveyance in 2nd Embodiment in the technique of this indication.

[First Embodiment]
The conveyance pallet in the first embodiment will be described with reference to FIGS. 1 to 4.
[Construction of pallet for transportation]
As shown in FIG. 1, the resin substrate 11 in the transfer pallet 10 includes a lower layer substrate 12 formed in a rectangular plate shape, and a rectangular frame is formed on the periphery of the support surface 12 a that is the upper surface of the lower layer substrate 12. The upper substrate 13 formed in a shape is joined. In the resin substrate 11, the outer peripheral portion of the substrate 11 has a two-layer structure including a lower layer substrate 12 and an upper layer substrate 13, and the central portion surrounded by the upper layer substrate 13 has a single layer structure including the lower layer substrate 12.

  The lower layer substrate 12 and the upper layer substrate 13 may be formed from the same resin, or may be formed from different resins. For example, ABS resin is used as a material for forming the lower layer substrate 12 and the upper layer substrate 13, and the thicknesses of the lower layer substrate 12 and the upper layer substrate 13 are, for example, 5 mm.

  A plurality of reinforcing frames 14 constituting a reinforcing member are fixed to a portion surrounded by the upper layer substrate 13 in the support surface 12a. Each of the plurality of reinforcing frames 14 is formed in a quadrangular prism shape extending along one direction. A plurality of through holes penetrating the substrate 11 are formed in a portion surrounded by the upper layer substrate 13. Each of the plurality of reinforcing frames 14 is formed with an insertion hole facing the through hole formed in the substrate 11, and is used for fixing the positioning screw 20 and the female screw 14 t disposed at a position facing the insertion hole. A movable female screw 14s is attached. Each of the plurality of reinforcing frames 14 is screwed to the substrate 11 through the through hole of the substrate 11, the insertion hole of the reinforcing frame 14, and the female screw 14t.

  Each of the plurality of reinforcing frames 14 is a member that supplements the strength of the substrate 11, and each of the plurality of reinforcing frames 14 is thicker than the upper substrate 13. Each of the plurality of reinforcing frames 14 may be formed of a material having rigidity higher than that of the substrate 11, or may be formed of the same material as that for forming the substrate 11. Each of the plurality of reinforcing frames 14 is preferably a metal member mainly composed of aluminum such as aluminum or an aluminum alloy. Since the metal member mainly composed of aluminum is lighter and more workable than iron or copper, the weight of the transport pallet 10 and the workability of the transport pallet 10 are improved.

  Each of the plurality of reinforcing frames 14 is formed in a straight line extending along a direction intersecting with each other. For example, the reinforcing frame 14 extends along the long side of the substrate 11 or the short side of the substrate 11 and is surrounded by the upper layer substrate 13. It arrange | positions at the site | part at the grid | lattice form. The portion surrounded by the upper substrate 13 is bordered by two long side reinforcement frames 14 a extending along the long side of the substrate 11 and two short side reinforcement frames 14 b extending along the short side of the substrate 11. Yes. In a portion surrounded by the upper layer substrate 13, a plurality of long side reinforcing frames 14 a are arranged along the short side of the substrate 11 at intervals. Six short-side reinforcement frames 14b are arranged along the long sides of the substrate 11 between the two long-side reinforcement frames 14a at approximately the center in the portion surrounded by the upper layer substrate 13. Has been.

  When an external force that warps the substrate 11 acts on the substrate 11, each of the plurality of long-side reinforcing frames 14 a suppresses warping and bending of the entire substrate 11 in the long-side direction of the substrate 11. When an external force that warps the substrate 11 acts on the substrate 11, each of the plurality of short-side reinforcing frames 14 b suppresses warping or bending particularly at the center of the substrate 11.

  In each of the plurality of reinforcing frames 14, a fastening groove 15 that is continuous along the direction in which the reinforcing frame 14 extends is formed on the upper surface of the reinforcing frame 14. In the fastening groove 15, the groove opening is narrower than the groove width, and a female screw 14 s that is allowed to move only along the fastening groove 15 is disposed inside the fastening groove 15. Grooves 16 that are continuous along the direction in which the reinforcing frame 14 extends are formed on the pair of side surfaces and the lower surface of each of the plurality of reinforcing frames 14, thereby reducing the weight of the reinforcing frame 14. A positioning block 20 is fastened to a part of the plurality of reinforcing frames 14 with screws.

  Each of the plurality of positioning blocks 20 is disposed at a position that contacts the bottom surface of the battery pack, and the battery pack is raised to a preset height or disposed near the side surface of the battery pack so that the position of the battery pack is To prevent the shift. Of the substrate 11, the lower portion of the positioning block 20 is a portion that receives a particularly large load of the battery pack, and is a portion where the substrate 11 tends to warp. In this respect, in the configuration in which the positioning block 20 is fixed to the reinforcing frame 14, the reinforcing frame 14 is surely disposed in a portion of the substrate 11 that is particularly easily warped, and the warping of the substrate 11 is reliably suppressed.

A detailed configuration of the positioning block 20 will be described with reference to FIG.
As shown in FIG. 2, the movable body 21 constituting the positioning block 20 is formed in a gate shape straddling the reinforcing frame 14. In the movable body 21, a movable bridge portion 21 b is formed integrally with a pair of left and right movable side portions 21 a facing the side surfaces of the reinforcing frame 14.

  In the movable body 21, the movable bridge portion 21b facing the upper surface of the reinforcement frame 14 connects the pair of left and right movable side portions 21a on the reinforcement frame 14, and the upper surface of the movable bridge portion 21b includes a fastening groove 15 and Opposing fastening holes 22 and a pair of left and right latch protrusions 24 sandwiching the fastening holes 22 are formed. A positioning screw 23 as a fastening member is inserted into the fastening hole 22. When the positioning screw 23 is screwed into the female screw 14s in the fastening groove 15 through the fastening hole 22, the vicinity of the groove opening of the fastening groove 15 in the reinforcing frame 14 and the movable bridge portion 21b are fastened by the positioning screw 23 and the female screw 14s. Thus, the movable body 21 is fixed to the reinforcing frame 14.

  A connecting portion 21c protrudes from the movable bridge portion 21b along the extending direction of the reinforcing frame 14, and a pair of left and right connecting shafts 25 extending along a direction orthogonal to the extending direction of the reinforcing frame 14 protrude from the connecting portion 21c. ing.

The support body 31 constituting the positioning block 20 is formed in a multi-stage quadrangular prism shape extending along the vertical direction. A pair of left and right latch holes into which each of the pair of left and right latch protrusions 24 is fitted is formed on the bottom surface 31 b of the support 31. A pair of left and right connection pieces 32 extending from the bottom surface 31 b of the support body 31 toward each of the pair of left and right connection shafts 25 protrudes from the bottom of the support body 31. Each of the pair of left and right connecting pieces 32 has a connecting hole 33 that is an elliptical hole extending along a direction orthogonal to the direction in which the reinforcing frame 14 extends. A connecting shaft 25 is inserted into each of the pair of left and right connecting holes 33.
[Operation of transport pallet]
The operation of the transfer pallet will be described with reference to FIGS. First, the process of positioning the positioning block 20 will be described with reference to FIG.

  As shown in the upper left of FIG. 3, first, the positioning screw 23 screwed to the female screw 14s is loosened so as not to be removed from the female screw 14s in a state where the support 31 is tilted on the upper surface of the reinforcing frame 14. It is done. Next, the movable body 21 is moved along the fastening groove 15 together with the positioning screw 23 screwed with the female screw 14s, and the movable body 21 extends along with the support body 31 to a predetermined position for positioning the battery pack. Moved along the direction. Subsequently, the positioning screw 23 is fastened to the female screw 14 s through the fastening hole 22. As a result, the vicinity of the groove opening in the fastening groove 15 and the movable bridge portion 21b are fastened to the positioning screw 23 and the female screw 14s, and the movable body 21 is fixed to the reinforcing frame 14 again.

  As shown in the lower right of FIG. 3, when the movable body 21 is positioned again on the reinforcing frame 14, the support body 31 is raised from the upper surface of the reinforcing frame 14 onto the upper surface of the movable bridge portion 21 b. At this time, each of the pair of left and right connecting shafts 25 is connected to the distal end side of the connecting piece 32 on the inner peripheral surface of the connecting hole 33 into which the left and right connecting shafts 25 are inserted so that the bottom surface 31 b of the support 31 does not collide with the latch protrusion 24. Rotate relatively along the curved surface. When the support body 31 is raised on the upper surface of the movable bridge portion 21b, the support body 31 is lowered toward the reinforcing frame 14, and each of the pair of left and right connection shafts 25 is connected to the connection hole 33 into which the support body 31 is inserted. It moves relatively toward the curved surface on the proximal end side of the connecting piece 32 in the inner peripheral surface. As a result, the pair of left and right latch protrusions 24 formed on the upper surface of the movable bridge portion 21 b are fitted into the latch holes formed on the bottom surface of the support body 31, and the support body 31 is positioned on the movable body 21.

  In addition, when the support body 31 is fallen on the upper surface of the reinforcement frame 14, the support body 31 is first lifted from the movable bridge | bridging part 21b, and each of the left-right paired connecting shaft 25 was inserted in it. It moves relatively toward the curved surface on the tip end side of the connecting piece 32 in the inner peripheral surface of the connecting hole 33. Thereby, each of the pair of left and right latch protrusions 24 formed on the upper surface of the movable bridge portion 21 b is removed from the latch hole formed on the bottom surface of the support 31. And the support body 31 is fall | descended toward the upper surface of the reinforcement frame 14 from the upper surface of the movable bridge | bridging part 21b.

  As shown in FIG. 4, when each of the plurality of positioning blocks 20 is arranged at a position for supporting the battery pack 40 and a position for suppressing the displacement of the battery pack 40, the battery is placed on the transport pallet 10. The pack 40 is placed. The weight of the battery pack 40 is 60 kg, for example.

  Here, in the conventional transfer pallet, the battery pack 40 is directly mounted on an ABS substrate having a thickness of 5 mm, or the battery pack 40 is mounted on an ABS substrate having a thickness of 5 mm to which a positioning block is fixed. Therefore, the warpage of the substrate is accumulated in a state where the position where the battery pack 40 is placed is depressed. And the position of the battery pack 40 with respect to a board | substrate will shift | deviate with the deformation | transformation in a board | substrate.

  At this time, for example, in a nut attachment process by an attachment robot or the like, the clearance at the position of the battery pack 40 is about 1.5 mm. For this reason, when nuts are attached by an attachment robot or the like as a subsequent process, the nut attachment position in the battery pack 40 is deviated from the target position depending on the accumulated degree of warpage, and the nut cannot be attached. In addition, as a result of the position of the positioning block being shifted with the deformation of the substrate, the battery pack 40 is not placed on the positioning block that supports the battery pack 40, or the battery pack is positioned between the positioning blocks that suppress the skidding of the battery pack 40. 40 may not enter. Furthermore, since a through-hole is formed in the substrate for screwing the positioning block, aging deterioration tends to proceed around the through-hole that continues to receive a load on the positioning block as compared with other portions of the substrate.

  On the other hand, in the pallet 10 for conveyance, the some reinforcement frame 14 is fixed to the support surface 12a, and the positioning block 20 is attached to each of the some reinforcement frame 14. As shown in FIG. In the substrate 11, the lower portion of the positioning block 20 is a portion that receives a particularly large load of the battery pack, and in a configuration in which the plurality of positioning blocks 20 are directly fixed to the substrate 11, the substrate is easily warped. In this respect, in the transfer pallet 10, the positioning block 20 is fixed to the reinforcing frame 14. Therefore, the reinforcing frame 14 is surely disposed in a portion of the substrate 11 that is particularly easily warped, and the warpage in the substrate 11 is reliably reduced. Is done.

  Each of the plurality of reinforcing frames 14 is a metal frame mainly composed of aluminum, and the positioning block 20 is attached to the reinforcing frame 14. Therefore, compared with the configuration in which the portion that continues to receive the load on the positioning block 20 is the substrate 11, the aging of the substrate 11, and hence the aging of the pallet 10 for conveyance, can be suppressed.

As described above, according to the first embodiment, the following effects can be obtained.
(1) The positioning blocks 20 can be arranged at different positions according to both the battery pack 40 to be transported this time and the battery pack 40 to be transported next time. Therefore, since different types of battery packs 40 can be transported by one transport pallet 10, they are necessary for transporting the battery pack 40 when different types of battery packs 40 are transported. Thus, the number of transfer pallets 10 can be reduced.

  (2) Since the reinforcing frame 14 is a metal frame mainly composed of aluminum, the weight of the reinforcing frame 14 is improved, the workability of the reinforcing frame 14 is improved, and the weight of the conveying pallet 10 is reduced. Workability is improved.

  (3) Since the extending directions of each of the plurality of reinforcing frames 14 are orthogonal to each other, the function of supplementing the strength of the substrate 11 compared to the configuration in which the reinforcing frame 14 has a simple one-dimensional structure is Enhanced.

  (4) The plurality of positioning blocks 20 are two-dimensionally arranged along a plane including the plurality of reinforcing frames 14, that is, along the support surface 12 a of the substrate 11. Therefore, since the plurality of positioning blocks 20 are displaced along the two-dimensional direction, it is easy to arrange the positioning blocks 20 according to different types of battery packs 40.

  (5) Since the positioning block 20 is fastened to the upper surface of the reinforcing frame 14, compared to the configuration in which the positioning block is fastened to the bottom surface of the reinforcing frame 14 or the side surface of the reinforcing frame 14, It is easy to fasten the positioning block 20 again.

(6) The fastening groove 15, which is the position where the positioning block 20 is fastened, continues along the direction in which the reinforcing frame 14 extends. Therefore, as compared with a configuration in which the position where the positioning block 20 is fastened is limited to a part of the reinforcing frame 14, the degree of freedom of arrangement of the positioning block 20 is increased.
[Second Embodiment]
With reference to FIG. 5, the pallet for conveyance in 2nd Embodiment is demonstrated. The transport pallet in the second embodiment is different from the transport pallet in the first embodiment in that the number of positioning blocks is different from each other and the suppression block is provided. In the following, the quantity of positioning blocks and the configuration of the suppression block will be described in detail. The components having the same functions as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted. .
[Construction of pallet for transportation]
As shown in FIG. 5, the portion surrounded by the upper substrate 13 includes two long-side reinforcing frames 14 a extending along the long side of the substrate 11 and two short sides extending along the short side of the substrate 11. It is bordered by the reinforcing frame 14b. Other reinforcements except for the four reinforcement frames 14 that border the portion surrounded by the upper layer substrate 13 among the plurality of reinforcement frames 14 and the one short-side reinforcement frame 14b disposed substantially at the center of the support surface 12a. A positioning block 20 is attached to all the frames 14. In the transport pallet 10, each of the plurality of supports 31 may be used in a state of being raised on the upper surface of the movable bridge portion 21 b, or a part of the plurality of supports 31 may be used on the upper surface of the reinforcing frame 14. You may use it in the state where it was brought down.

  Each of the plurality of transport pallets 10 is transported side by side on a conveyor substantially along a horizontal plane, for example, in a line in which the battery pack 40 is assembled. At this time, when the battery pack 40 is placed on each of the plurality of transfer pallets 10 and the contact area between the grounding surface of the transfer pallet 10 and the conveyor is different for each transfer pallet 10, The speed at which the pallet 10 is conveyed is different for each pallet 10 for conveyance.

  Here, in the conventional transfer pallet, when the speed at which the preceding transfer pallet is transferred is slower than the speed at which the subsequent transfer pallet is transferred, the edge of the subsequent substrate rides on the edge of the previous substrate. Or the edge of the board | substrate preceding the edge of the subsequent board | substrate will run over. Further, even if the pallet 10 is used for the transfer, if there is a warp tolerable in a later process, or if there is a slight level difference on the conveyor, a structure is formed on the edge of the preceding substrate 11. The edge of the board | substrate 11 to phrase rides on, or the edge of the board | substrate 11 preceding the edge of the subsequent board | substrate 11 rides on.

  Therefore, four restraining blocks 50 for restraining the other transfer pallet 10 from climbing are fixed on the upper substrate 13. The suppression block 50 is a block provided at the periphery of the upper surface of the substrate 11 and protrudes upward from the upper surface of the substrate 11. Each of the four suppression blocks 50 is fixed in a biased manner at the four corners of the support surface 12 a of the lower layer substrate 12. Each of the four suppression blocks 50 is screwed to the substrate 11 from the grounding surface of the substrate 11, similarly to the reinforcing frame 14.

Each of the four restraining blocks 50 may be formed from a material having higher rigidity than the rigidity of the substrate 11, or may be formed from the same material as the formation material of the substrate 11. Each of the four suppression blocks 50 is preferably a metal member mainly composed of aluminum such as aluminum or an aluminum alloy. The thickness of each of the four suppression blocks 50 is, for example, about twice the thickness of the substrate 11, and the height of each of the four suppression blocks 50 with respect to the ground plane of the substrate 11 is higher than the height of the movable body 21. Is also low.
[Operation of transport pallet]
When each of the plurality of transport pallets 10 is transported side by side on the conveyor, the transport speed of the transport pallet 10 that precedes the transport speed of the subsequent transport pallet 10 may be slower. . At this time, when the edge of the preceding substrate 11 is disposed below the edge of the subsequent substrate 11 by more than the thickness of the subsequent substrate 11, the suppression block 50 of the preceding substrate 11 and the edge of the subsequent substrate 11 are arranged. Abut. Further, when the edge of the preceding substrate 11 is disposed above the thickness of the substrate 11 with respect to the edge of the succeeding substrate 11, the edge of the preceding substrate 11 and the suppression block 50 of the succeeding substrate 11 are matched. Touch. As a result, even when the edge height of the preceding substrate 11 and the edge height of the subsequent substrate 11 are different from each other by more than the thickness of the substrate 11, the difference in height is equal to or more than the thickness of the suppression block 50. Unless this is the case, the board 11 can be prevented from climbing.

  Therefore, in the transport pallet 10, a protrusion is provided at least at a part of the periphery of the substrate 11, so that the transport pallet 10 that follows the edge of the substrate 11 of the preceding transport pallet 10 rides on or follows. It is possible to prevent the edge of the transfer pallet 10 that runs ahead of the edge of the substrate of the transfer pallet 10 to be carried on.

As described above, according to the second embodiment, in addition to the above (1) to (6), the effects listed below can be obtained.
(7) Since a part of the plurality of support bodies 31 is allowed to be used in a state where the support body 31 is tilted on the upper surface of the reinforcing frame 14, an unnecessary effort to change the arrangement of the positioning block 20 is saved. Therefore, the arrangement of the positioning block 20 according to the battery pack 40 is further facilitated.

  (8) The subsequent transfer pallet 10 can be prevented from climbing on the preceding transfer pallet 10 or the preceding transfer pallet 10 can be prevented from climbing on the subsequent transfer pallet 10.

  (9) Since each of the plurality of suppression blocks 50 is disposed at the four corners of the substrate 11, the above-described riding is further enhanced compared to the configuration in which the suppression block 50 is provided only at one peripheral edge of the substrate 11. It can be suppressed.

(10) The thickness of each of the plurality of suppression blocks 50 is about twice the thickness of the substrate 11, and the height of each of the four suppression blocks 50 with respect to the ground plane of the substrate 11 is the height of the movable body 21. Lower than that. For this reason, the subsequent transfer pallet 10 rides on the preceding transfer pallet 10 or the preceding transfer pallet 10 rides on the subsequent transfer pallet 10 is further suppressed. Moreover, it is suppressed that the suppression block 50 becomes a physical obstacle with respect to mounting of the battery pack 40 and conveyance of the battery pack 40.
[Modification]
The embodiment described above can be implemented with the following modifications.

  -In 2nd Embodiment, the suppression block 50 may be equally distributed in the periphery of the board | substrate 11, and may be arrange | positioned in the center in the long side of the board | substrate 11, and the center in the short side of the board | substrate 11. FIG. Further, the number of suppression blocks 50 may be three or less, or may be five or more.

  In the second embodiment, some or all of the plurality of suppression blocks 50 may be omitted, and the protrusions may be formed integrally with a part of the upper substrate 13. In short, the transfer pallet 10 only needs to include a protrusion that protrudes from the side surface of the substrate 11 on at least a part of the periphery of the substrate 11. Even with such a configuration, the effects according to the above (8) to (10) can be obtained.

  The shape of the reinforcing frame 14 is not limited to a linear shape, and may be, for example, a broken line shape, a curved shape, or a radial shape. Further, each of the plurality of reinforcing frames 14 may be arranged in parallel to each other along one direction.

  The part to which the positioning screw 23 is attached in the reinforcing frame 14 is not limited to the fastening groove 15 that is continuous along one direction, for example, a plurality of female screws that are scattered along the extending direction of the reinforcing frame 14. Also good. In short, the position where the positioning screw 23 is positioned in the reinforcing frame 14 may be set with an interval in the reinforcing frame 14.

  The portion where the female screw 14 s is attached to the reinforcing frame 14 may be a groove 16 formed on the side surface of the reinforcing frame 14. At this time, a fastening hole is formed in the movable side portion 21 a at a portion facing the groove 16. Then, the female screw 14s and the positioning screw 23 are fastened through a fastening hole formed in the movable side portion 21a. Even in such a configuration, the positioning block 20 moves to a predetermined position for positioning the battery pack and is fixed to the reinforcing member.

  The fastening member that fastens the positioning block 20 to the reinforcing frame 14 is not limited to the positioning screw 23, and may be embodied, for example, as a positioning pin or a clamp. In short, the positioning block 20 is fastened to the reinforcing frame 14. I just need it.

  In the positioning block 20, the support body 31 may be fixed to the movable body 21 in the raised state. At this time, a through hole that leads to the fastening hole 22 formed in the movable body 21 is formed in the support body 31. Any configuration is possible as long as the positioning screw 23 can be screwed and unscrewed through the through hole formed in the support 31. In short, the positioning block 20 may be configured to move to a predetermined position for positioning the battery pack and be fixed to the reinforcing member.

  The configuration in which the positioning block 20 is attached to the reinforcing frame 14 is not limited to fastening by a fastening member. For example, the positioning block 20 may be attached to the reinforcing frame 14 via a latch mechanism, or a rack and pinion Accordingly, the positioning block 20 may be attached to the reinforcing frame 14. In short, the positioning block 20 may be configured to move to a predetermined position for positioning the battery pack and be fixed to the reinforcing member.

  The positioning block 20 may be configured to be screwed and fixed directly to the reinforcing frame 14, for example. Then, when the arrangement of the positioning block 20 is changed, the positioning block 20 may be once removed from the reinforcing frame 14.

  The upper substrate 13 may be omitted from the substrate 11 and the substrate 11 may be only one lower substrate 12. Or the upper layer board | substrate 13 may be laminated | stacked on the whole surface of the support surface 12a, and the whole board | substrate 11 may be a 2 layer structure, and the board | substrate 11 may be a laminated body of three or more layers.

  DESCRIPTION OF SYMBOLS 10 ... Transfer pallet, 11 ... Substrate, 12 ... Lower layer substrate, 12a ... Support surface, 13 ... Upper layer substrate, 14 ... Reinforcement frame, 14a ... Long side reinforcement frame, 14b ... Short side reinforcement frame, 14t, 14s ... Female screw, DESCRIPTION OF SYMBOLS 15 ... Fastening groove, 16 ... Groove, 20 ... Positioning block, 21 ... Movable body, 21a ... Movable side part, 21b ... Movable bridge part, 21c ... Connection part, 22 ... Fastening hole, 23 ... Positioning screw, 24 ... Latch projection , 25 ... connecting shaft, 31 ... support, 31b ... bottom surface, 32 ... connecting piece, 33 ... connecting hole, 40 ... battery pack, 50 ... restraining block.

Claims (6)

A transport pallet for transporting the battery pack in a fixed manner,
The transport pallet is:
A resin substrate;
A reinforcing member that is formed in a shape extending along the upper surface of the substrate and is attached to the upper surface to supplement the strength of the substrate;
A plurality of positioning blocks for positioning the battery pack;
The positioning block is
It is mounted on the reinforcing member so as to be movable along the reinforcing member and fixed to the reinforcing member, and is moved to a position for positioning the battery pack and fixed to the reinforcing member at the position. A pallet for transportation characterized by The pallet for conveyance according to claim 1, wherein the reinforcing member is a metal member mainly composed of aluminum. The pallet for conveyance according to claim 1 or 2, wherein the reinforcing member is a plurality of frames extending linearly along directions intersecting each other. The pallet for conveyance according to any one of claims 1 to 3, wherein the positioning block is fixed to an upper surface of the reinforcing member using a fastening member. The positioning block includes a male screw as the fastening member,
The reinforcing member is formed with a continuous groove along the extending direction of the reinforcing member,
A female screw movable along the groove is accommodated in the groove,
The pallet for conveyance according to claim 4, wherein the positioning block is fixed to the reinforcing member by fastening the male screw and the female screw. The substrate is formed in a rectangular shape,
The conveyance pallet according to any one of claims 1 to 5, wherein a suppression block is provided on an upper surface of at least a part of the peripheral edge of the substrate to suppress the climbing of another conveyance pallet.

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