JP2010241444A - Synthetic resin pallet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a synthetic resin pallet to be inserted from two directions, capable of preventing a pallet body made of a synthetic resin, especially the face and the beam wall on a fork-inserting hole side from being broken, and simply replacing a cushioning member even if the cushioning member is broken, and having improved durability by making the pallet body made of the synthetic resin and the cushioning member attachable/detachable. <P>SOLUTION: On the inner face on the side of the face on which the cushioning member 3 is mounted, a fork inserting part 35 inserted into the fork inserting hole 4 of the pallet body 2 made of the synthetic resin is provided, and a plurality of ribs for holding a definite distance from the pallet body 2 made of the synthetic resin when mounting, is provided. On the peripheral edge on the side of the face on which the cushioning member 3 is mounted, a fitting part 36 to be fitted to the pallet body 2 made of the synthetic resin is provided, and on the fork inserting hole side of the pallet body 2 made of the synthetic resin, a fitting part 26 to be fitted to the peripheral edge of the cushioning member 3 is provided. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

The present invention relates to a synthetic resin pallet that is used for carrying and storing various articles on a loading surface.

When transporting or storing articles on a two-way synthetic resin pallet, a forklift or a pallet truck is usually used. At this time, the fork claw frequently collides with the vicinity of the beam portion on the fork insertion hole side of the two-way synthetic resin pallet. In particular, in the rental pallet industry, durability is required because the fork collides near the girder portion more frequently because it is used and abused in many industries. In addition, in a two-way synthetic resin pallet in which the top deck board and bottom deck board are bonded together, if a fork collides with the girder and a hole is made, rainwater and foreign matter will invade, creating a sanitary problem. It was also necessary to spend a lot of time repairing.

In order to prevent breakage due to such a fork collision, various breakage prevention measures have been proposed. For example, the transport pallet described in Patent Document 1 is provided with a buffer member for buffering a collision by a vertical piece at the base of the fork.

In addition, the pallet described in Patent Document 2 is provided with an additional layer for facilitating the distinction between the side wall of the pallet and the fork insertion hole, thereby preventing collision, and this additional layer is made of a high-strength virgin material. By using a synthetic resin, the impact resistance is also improved.

JP 09-165039 A JP 2006-282277 A

However, in Patent Document 1, although a part of the side surface of the pallet fork insertion hole is protected, it is difficult to ensure the impact resistance of the entire surface. Further, since the buffer member is mounted so as to be in close contact with the side wall of the pallet, the impact is transmitted to the side wall of the pallet when the fork collides, and the effect of preventing breakage is not sufficient. In particular, the fork collision location frequently collides with not only the side wall of the pallet but also the girder wall portion inside the fork insertion hole, so that this portion cannot be protected.

Further, in Patent Document 2, an attempt is made to increase the strength by providing an additional layer of a virgin material having a strength higher than that of the base material layer on the side wall of the pallet, but a synthetic resin pallet made of only a conventional virgin material. However, in view of the frequent damage caused by fork collisions, it is not possible to obtain a sufficient effect even with a two-layer structure of a base material layer and an additional layer. Further, like the pallet of Patent Document 1, the girder wall portion inside the fork insertion hole cannot be protected.

In view of such circumstances, the present invention prevents damage to the synthetic resin pallet main body, particularly the fork insertion hole side and the girder wall, by making the synthetic resin pallet main body and the buffer member detachable. Another object of the present invention is to provide a two-sided synthetic resin pallet that can be easily replaced even if the buffer member is broken, and has improved durability.

The present invention is a two-way synthetic resin pallet comprising a synthetic resin pallet main body and a removable buffer member that covers a fork insertion hole side surface of the synthetic resin pallet main body, on the mounting surface side of the buffer member On the inner surface, there is a fork insertion portion to be inserted into the fork insertion hole of the synthetic resin pallet main body, and a plurality of ribs are provided for holding a certain distance from the synthetic resin pallet main body when mounted, A fitting portion that fits with the synthetic resin pallet main body is provided at the periphery of the mounting surface side of the buffer member, and the fork insertion hole side of the synthetic resin pallet main body is fitted with the peripheral edge of the buffer member. A fitting portion is provided.

According to the present invention, a plurality of detachable cushioning members that cover the surface on the fork insertion hole side of the synthetic resin pallet main body are fixed to the synthetic resin pallet main body at the time of mounting on the inner surface on the mounting surface side. By providing this rib, it is possible to prevent damage to the synthetic resin pallet main body, particularly the fork insertion hole side and the girder wall. Moreover, even if the buffer member is broken, the buffer member can be easily replaced, the life of the synthetic resin pallet body is extended, and the durability is improved.

It is the perspective view seen from the upper surface side of the two-way insertion synthetic resin pallet which is one Embodiment of this invention. It is the perspective view seen from the lower surface side of the two-way synthetic resin pallet in FIG. It is the disassembled perspective view seen from the upper surface side about the buffer member of the near side of the two-way synthetic resin pallet in FIG. It is the disassembled perspective view seen from the lower surface side about the buffer member of the near side of the two-way synthetic resin pallet in FIG. It is the perspective view which looked at the buffer member from the back side upper direction. It is the perspective view which looked at the buffer member from the back side lower part. It is a rear view of a buffer member. It is the perspective view which looked at the upper deck board before welding from the lower surface side. It is the perspective view which looked at the lower deck board before welding in other embodiments from the upper surface side. FIG. 10 is an enlarged view of a perspective view seen from the back side of the lower deck board 22 in FIG. 9.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a two-way synthetic resin pallet (hereinafter simply referred to as a pallet) 1 according to an embodiment of the present invention as viewed from the upper surface side. The pallet 1 includes a synthetic resin pallet main body 2 having a surface portion and a buffer member 3. The synthetic resin pallet body 2 has a structure in which an upper deck board 21 and a lower deck board 22 are bonded together by heat welding. Since this pallet 1 is for two-way insertion, two fork insertion holes 4 are provided on one side surface, but there are no fork insertion holes on the other side surface. Below the fork insertion hole 4 in the buffer member 3, an inclined surface 4a and a flat surface portion 4b are provided so that the wheel easily moves when the pallet truck is inserted. In addition, similar inclined surfaces and flat portions are also provided at intermediate positions. Note that an anti-slip tape for preventing slipping of the luggage can be attached to the upper deck board 21 as necessary. Further, an anti-slip tape for preventing slippage with a pallet located below when empty pallets are stacked may also be attached to the lower deck board 22.

FIG. 2 is a perspective view of the pallet 1 shown in FIG. 1 as viewed from the lower surface side. Since the pallet 1 is used on one side, the lower deck board 22 of the synthetic resin pallet body 2 has four openings 5 for moving the pallet truck. A plurality of reinforcing ribs 22a are provided on the back side of the pallet 1, that is, the back side of the lower deck board 22, in a direction orthogonal to the fork insertion direction, and a plurality of reinforcing ribs 22b in a direction parallel to the fork insertion direction. Is formed. From the opening 5, a plurality of reinforcing ribs 21 a and 21 b provided on the back side of the upper deck board 21 can be seen. The reinforcing rib 21a in the direction orthogonal to the fork insertion direction and the reinforcing rib 21b in the direction parallel to the fork insertion direction play a role of reinforcing the entire pallet 1 against bending, twisting, load resistance and the like.

FIG. 3 is an exploded perspective view of the pallet 1 viewed from the upper surface side with respect to the buffer member 3 on the front side. Reinforcing ribs 25a against bending in a direction perpendicular to the fork insertion direction are provided below the fork insertion hole 4 of the synthetic resin pallet body 2, and reinforcement against collision during fork insertion in a direction parallel to the fork insertion direction is provided. A plurality of ribs 25b are provided. Further, a plurality of fitting convex portions 26 are provided on the fork insertion hole side of the synthetic resin pallet main body 2 as fitting portions with the periphery of the buffer member 3. The buffer member 3 covers the surfaces of the end girders 23 and 23 on the fork insertion hole 4 side of the synthetic resin pallet main body 2, the surface of the intermediate beam 24, and the inner surface of the fork insertion hole 4. The pallet body 2 made of synthetic resin is detachable. In this embodiment, the buffer member 3 is integrally formed with end girder mounting portions 33 and 33 that cover the end girder 23, an intermediate girder mounting portion 34, and fork insertion portions 35 and 35 that are inserted into the fork insertion holes 4. ing. The reinforcing ribs 25a and 25b also serve to support the fork insertion portions 35 and 35. On the periphery of the buffer member 3, a plurality of fitting recesses 36 are provided as fitting portions with the plurality of fitting protrusions 26 of the synthetic resin pallet body 2. The fitting recess 36 is preferably a fitting hole 36 in order to securely hold the buffer member 3.

FIG. 4 is an exploded perspective view of the pallet 1 as viewed from the back side with respect to the buffer member 3 on the front side. On the upper side of the fork insertion hole 4 of the pallet body 2 made of synthetic resin, a reinforcing rib 27a is provided in a direction perpendicular to the fork inserting direction, and a plurality of reinforcing ribs 27b are provided in a direction parallel to the fork inserting direction. The reinforcing rib 27a mainly plays a role of reinforcing the inner peripheral portion of the fork insertion hole 4, and the reinforcing rib 27b mainly plays a role of reinforcing against an impact when the fork is inserted. In order to further increase the strength, some of the reinforcing ribs 27b are connected to the reinforcing ribs 21b of the synthetic resin pallet main body 2 with the reinforcing ribs 27a interposed therebetween. The reinforcing rib 27b has a substantially trapezoidal shape having an inclined side that expands toward the outside of the fork insertion hole 4 so that the fork can be easily inserted.

FIG. 5 is a perspective view of the shock-absorbing member as seen from above the rear side. On the upper surface side and the lower surface side of the buffer member 3, fitting hole portions 36 are provided to be fitted to the upper surface side and the lower surface side of the synthetic resin pallet body 2, respectively. Further, on the side surface side, a fitting claw portion 37 that is fitted to the fitting portions 211 and 221 on the side surface side of the synthetic resin pallet main body 2 is provided. By forming the buffer member 3 from an elastic body such as polypropylene, polyethylene, a composite material thereof, or rubber, the buffer member 3 is fitted into the synthetic resin pallet body 2 by the elasticity of the fitting claw portion 37. According to this example, the fitting claw portions 37 are formed so as to have the step 371 slightly lower inward than the surface on the side surface side of the cushioning member 3 at the upper and lower two positions on the left and right side surfaces.

In the synthetic resin pallet, corner drop strength is also required, but by providing the step 371 in this manner, the impact due to the drop from the corner is dispersed, so that the breakage of the corner is reduced. Further, when a load is loaded, a stretch film may be wound to prevent the collapse of the load, but this step 371 also functions as a stretch film hook portion. In addition, when the fitting claw portion 37 is formed, the mold structure is simplified by the step 371, which is advantageous in terms of cost.

On the back surface side of the fitting claw portion 37, a fitting claw portion reinforcing rib 372 for reinforcement is provided in a direction parallel to the direction in which the buffer member 3 is fitted to the synthetic resin pallet main body 2. A plurality of fork insertion portion reinforcing ribs 38a are provided in a direction orthogonal to the fork insertion direction on the side surface side of the back surface side of the fork insertion portion 35, and directions parallel to the fork insertion direction are provided on the upper surface side and the lower surface side. A plurality of fork insertion portion reinforcing ribs 38b are formed. Further, a plurality of flat portion reinforcing ribs 39 are formed in the vertical direction on the flat portion on the back surface side of the buffer member 3. The plurality of fork insertion portion ribs 38 a and the plurality of flat surface portion ribs 39, and the plurality of flat surface portion ribs 39 and the plurality of fitting claw portion reinforcing ribs 372 are connected by a plurality of connection reinforcing ribs 40. In consideration of the impact of the forklift from the side surface of the buffer member 3, it is preferable that the plurality of connection reinforcing ribs 40 be arranged on a straight line with the fork insertion portion rib 39 interposed therebetween. Does not need to be arranged on a straight line.

Each of these reinforcing ribs is preferably 3 mm or more in width from the viewpoint of reinforcement, preferably 5 mm or less in terms of weight reduction, and particularly preferably about 4 mm in width. Further, the flat portion reinforcing rib 39 and the connecting reinforcing rib 40 have such a height as to hold a certain distance when the buffer member 3 is mounted on the synthetic resin pallet main body 2, from the viewpoint of impact resistance. The height is preferably 10 mm or more, but if it is made too high and it is formed like a wall, not only will the weight increase, but there is also a risk that the wall will fall easily due to a fork collision, so the height is 20 mm or less. It is preferable to do. In the case where the upper deck board 21 and the lower deck board 22 are bonded together by thermal welding as in the case of the pallet 1, the welding surface is substantially at the center in the vertical direction. It is preferable to provide it at a position that does not overlap the weld surface. This is because the impact due to the fork collision is directly transmitted from the connecting reinforcing rib 40 to the welding surface when the position is such that it contacts the welding surface, which may damage the welding surface.

Therefore, for the same reason, it is preferable that the fork insertion portion reinforcing rib 38a is also provided at a position that does not overlap the welding surface. Further, the width of the fork insertion portion reinforcing ribs 38a and 38b is preferably 3 to 5 mm, and particularly preferably 4 mm, as described above. The height of the buffer member 3 is a synthetic resin pallet main body. 2, the height is such that it maintains a certain distance from the inner wall of the fork insertion hole 4 of the synthetic resin pallet body 2 according to the height of the flat portion reinforcing rib 39 and the connecting reinforcing rib 40. Yes. In addition, it is preferable that the fork insertion portion reinforcing ribs 38a and 38b are configured such that the height thereof gradually decreases with respect to the fork insertion direction. When the buffer member 3 is mounted on the synthetic resin pallet main body 2, the end of the fork insertion portion 35 substantially coincides with the wall surface of the fork insertion hole 4 of the synthetic resin pallet main body 2. It is because it improves. Further, by gradually lowering the height, for example, when the buffer member 3 is formed of a material such as rubber or silicon resin, the fork insertion portion reinforcing rib 38a, the flat portion reinforcing rib 39, and the connecting reinforcing rib 40 are used. In addition, a substantially sealed space is formed with the wall surface of the fork insertion hole 4 of the pallet body 2 made of synthetic resin, so that an effect like an air cushion is produced in that portion, and the impact resistance is further improved. Become. A plurality of peripheral portion reinforcing ribs 41 are provided on the inner surface side of the upper and lower peripheral portions of the buffer member 3, but the peripheral portion reinforcing ribs 41 may be omitted.

FIG. 6 is a perspective view of the buffer member 3 as viewed from below the back side, and FIG. 7 is a rear view of the buffer member 3.

FIG. 8 is a perspective view of the upper deck board 21 before welding as seen from the lower surface side. In the end beam 23, an end beam reinforcing rib 23a is provided in a direction perpendicular to the fork insertion direction, and an end beam reinforcing rib 23b is provided in a direction parallel to the fork insertion direction. In the end girders, end rib reinforcing ribs 23a are provided as reinforcing walls in order to improve the bending strength. On the other hand, the reinforcing ribs 23b in the end girders are provided as reinforcing walls in the vicinity of the fork insertion holes in order to prevent damage to the girder wall mainly due to the fork insertion. Further, in order to reinforce the corner portion of the end beam 23, an end beam reinforcing rib 23c is provided as a reinforcing wall.

In the intermediate beam 24, an intermediate beam reinforcement rib 24a is provided in a direction perpendicular to the fork insertion direction, and an intermediate beam reinforcement rib 24b is provided in a direction parallel to the fork insertion direction. In the intermediate girders, the bending stress is not as great as the end girders, but since it is necessary to ensure the strength against the load of the load, the intermediate rib reinforcing ribs 24a are used as reinforcing walls. Therefore, there is a portion that is a reinforcing wall having a substantially U-shape. Further, the intermediate rib reinforcing ribs 24b are provided in the shape of ribs having a low height so as to connect the intermediate rib reinforcing ribs 24a so as to reduce the weight. In order to prevent the girder wall from being damaged, it is provided as a reinforcing wall.

A plurality of reinforcing ribs 21a and 21b provided on the lower surface side of the upper deck board 21 play a role of reinforcing the entire pallet 1 against bending, twisting, load resistance, etc. The rib 21a has a rough arrangement portion and a dense arrangement portion.

FIG. 9 is a perspective view as seen from the upper surface side of the lower deck board 22 before welding in another embodiment. The arrangement of the reinforcing ribs in the end girders and the intermediate girders is the same as the reinforcing ribs 23a, 23b, 23c, 24a, 24b in the end girders and the intermediate girders of the upper deck board 21 described above. The positional relationship is such that can be welded. Unlike the embodiment shown in FIG. 3, the reinforcing ribs 25a and 25b on the lower side of the fork insertion hole 4 are not provided, and the inclined surface 25c is provided so that the wheels of the pallet truck can move smoothly.

FIG. 10 is an enlarged view of a perspective view seen from the lower surface side of the lower deck board 22 in FIG. On the back surface side of the inclined surface 25c, a reinforcing rib 25d is provided in a direction perpendicular to the fork insertion direction, and a reinforcing rib 25e is provided in a direction parallel to the fork insertion direction. For this reason, the fitting convex part 26 which fits with the buffer member 3 is provided at a substantially intersection of the reinforcing ribs 25d and 25e.

In this way, the buffer member 3 is attached to the synthetic resin pallet body 2. If the buffer member 3 is damaged by the fork, the fitting claw portion 37 is pushed in to push the synthetic resin pallet. By releasing the fitting with the fitting portions 211 and 221 of the main body 2, the damaged buffer member 3 can be removed and a new buffer member 3 can be mounted.

The synthetic resin pallet body used in the present invention is bonded to the upper deck board and lower deck board by integral molding, but the synthetic resin pallet body is molded by integral molding, and a buffer member is attached to this. It can also be set as a structure. The pallet body made of synthetic resin is not limited to use on one side but may be used on both sides.

DESCRIPTION OF SYMBOLS 1 Two-way insertion synthetic resin pallet 2 Synthetic resin pallet main body 211,221 Fitting part 3 Buffer member 35 Fork insertion part 36 Fitting convex part 37 Fitting claw part 38a, 38b Fork insertion part reinforcement rib 39 Flat part reinforcement rib 40 Connection reinforcing rib 4 Fork insertion hole 5 Opening

Claims (3)

A two-way synthetic resin pallet comprising a synthetic resin pallet main body and a removable buffer member that covers a fork insertion hole side surface of the synthetic resin pallet main body,
The inner surface on the mounting surface side of the cushioning member has a fork insertion portion that is inserted into the fork insertion hole of the synthetic resin pallet main body, and holds a certain distance from the synthetic resin pallet main body at the time of mounting. There are multiple ribs,
On the periphery of the mounting surface side of the cushioning member, a fitting portion that is fitted to the synthetic resin pallet main body is provided,
The two-way synthetic resin pallet is characterized in that a fitting portion is provided on the fork insertion hole side of the synthetic resin pallet main body to be fitted to the periphery of the buffer member. Among the fitting portions of the buffer member, the fitting portions on the upper surface side and the lower surface side are fitting recesses, the fitting portion on the side surface side is a fitting claw portion,
The fitting part of the upper surface side and the lower surface side is a fitting convex part among the fitting parts of the said synthetic resin pallet main body, The fitting part of the side surface side is made into the fitting hole part. A two-way synthetic resin pallet. The plurality of ribs, the inner surface of the buffer member, the surface on the fork insertion hole side of the synthetic resin pallet main body, and the plurality of ribs formed on the fork insertion portion form a substantially sealed space. The two-way synthetic resin pallet according to claim 1 or 2.

Images