JP5147459B2 - palette - Google Patents

Description

  The present invention relates to a pallet in which an anti-slip material is inserted into a recess formed in a pallet body so as to seal the recess.

  As this kind of pallet, for example, a pallet disclosed in Patent Document 1 is known. As shown in FIG. 5 (a), the pallet 2 of Patent Document 1 has an upper deck 11 and a lower deck 12 having a quadrangular shape in plan view, and a rectangular tube shape, and a plurality of girders 13 connecting the two decks. And a pallet main body integrally formed of synthetic resin. An anti-slip material 50 is attached to the upper surface of the upper deck 11 to prevent slippage of a load or the like with respect to the pallet 2.

  Specifically, as shown in FIG. 5B, the upper deck 11 is formed with a recess 40 that opens on the upper surface side. A columnar bulging portion 41 projects from the center of the bottom surface of the recess 40, and the recess 40 is a cylindrical space. Further, the anti-slip material 50 is formed of a cylindrical body portion 52 and a head portion 51 that covers one end opening of the body portion 52. The anti-slip material 50 is inserted into the recess 40 by being inserted into the recess 40 while the body 52 and the head 51 are pressed against the inner peripheral surface of the recess 40.

  By the way, in order to prevent foreign matters such as rainwater from entering the concave portion 40 of the pallet body, it is preferable that the concave portion 40 is sealed by the anti-slip material 50. However, when such a sealed structure is adopted, when the anti-slip material 50 is inserted into the recess 40, the air in the space formed between the inner surface of the recess 40 and the anti-slip material 50 is compressed, The internal pressure is increased. If left in this state, there is a problem that the anti-slip material 50 is easily detached from the recess 40 by being pressed by the air in the space. In particular, when transporting pallets loaded with loads in trucks or containers in the summer, the anti-slip material 50 is more removed due to the thermal expansion of the air in the space when the pallet tends to be in a high temperature state. Easy to release.

In order to solve such a problem, in the pallet 2 of Patent Document 1, a problem is solved by providing a through hole 53 that penetrates the body 52 inward and outward in a portion near the head 51 in the body 52. . With this configuration, when the anti-slip material 50 is inserted into the recess 40, the air in the space S1 formed between the inner surface of the recess 40 and the head 51 of the anti-slip material 50 passes through the through hole. It is suppressed that the internal pressure of the space S1 is increased by being discharged to the outer region of the recess 40 through 53.
Japanese Patent Laid-Open No. 10-77037

  However, in the configuration of the pallet 2 of Patent Document 1, the air in the space S <b> 1 formed between the inner surface of the recess 40 and the head 51 can be discharged, but the other of the inner surface of the recess 40 and the body 52. The air in the space S2 formed between the two ends cannot be discharged. The through hole 53 is formed in a direction orthogonal to the insertion direction of the anti-slip material 50. For this reason, when the anti-slip material 50 is inserted, the through-hole 53 may be crushed by a force for pushing the anti-slip material 50, and in this case, the air in the space S1 cannot be sufficiently discharged. Thus, the configuration of the pallet 2 of Patent Document 1 sufficiently suppresses the detachment of the anti-slip material 50 due to the increase in internal pressure in the entire space formed between the inner surface of the recess 40 and the anti-slip material 50. It wasn't something that could be done.

  The invention of this pallet has been made in view of such a conventional situation, and the purpose of the pallet is to prevent slipping caused by excessive increase in the internal pressure of the space formed between the inner surface of the recess and the slip preventing material. It is to suppress the detachment of the material.

In order to achieve the above-mentioned object, the pallet according to claim 1 and 2 is made of a synthetic resin made of a non-slip material comprising a cylindrical body and a head covering one end opening of the body. In the pallet inserted so as to seal the recess with respect to the recess formed in the pallet main body, the anti-slip material is connected to the outer peripheral surface of the body part from the other end side of the body part to one end. An axial groove extending toward the part side is provided, and the axial groove is formed between the other end of the body part and the bottom surface of the concave part when the anti-slip material is inserted into the concave part. It is provided so that the space to be communicated with the outer region of the recess.

  According to the above configuration, when the anti-slip material is inserted into the recess formed in the pallet, the space formed between the other end of the trunk portion and the bottom surface of the recess is recessed by the axial groove. It will be in communication with the outside area. As a result, when the non-slip material is inserted into the recess, the air in the space is discharged to the outer region of the recess via the axial groove, and the internal pressure of the space is prevented from being excessively increased. Therefore, when the anti-slip material is inserted into the recess, the anti-slip material can be effectively prevented from being detached from the pallet main body due to excessive increase in the internal pressure of the space.

The pallet of claim 1, the prior SL-slip material, provided circumferential grooves extending in the circumferential direction of the body portion on an outer peripheral surface of the barrel portion, circumferential direction grooves, said axial grooves It communicates with the end on the head side .

  According to the above configuration, the air discharged from the space through the axial groove is discharged not only from the end portion on the head side of the axial groove but also from the circumferential groove communicated with the end portion. It will be. Therefore, the air in the space is efficiently discharged, and the increase in the internal pressure of the space can be more effectively suppressed.

  In addition, when the anti-slip material is inserted into the recess of the pallet body while the outer peripheral surface of the barrel is pressed against the recess, a catch is generated between the inner surface of the recess and the outer peripheral surface of the barrel. A puddle may be formed on the surface. When such a meat reservoir is formed, the outer diameter of the body part changes partially, and the anti-slip material can be inserted in an oblique state with respect to the recessed part, or inserted to the deep part of the recessed part. There may be a problem that disappears. Here, according to the above configuration, what is gathered together as a meat reservoir escapes into the circumferential groove, that is, the meat reservoir can be absorbed by the circumferential groove, resulting in the formation of the meat reservoir as described above. Generation | occurrence | production of the attachment defect of a non-slip material can be suppressed.

The pallet of claim 2, the axial ribs provided on the inner peripheral surface side of the front kidou portion, the end face of said axial ribs, the inner peripheral surface of the barrel, thin by the axial groove Connected to the formed site .

  If a rib is formed on the inner peripheral surface side of the body portion, sink marks are likely to occur on the outer peripheral surface side of the portion where the rib is formed. The occurrence of such sink marks forms unnecessary irregularities on the outer peripheral surface of the trunk portion, and the pressure contact state between the outer peripheral surface of the trunk portion and the inner peripheral surface of the concave portion when the anti-slip material is inserted into the concave portion. It may become a factor to worsen. This deterioration of the pressure contact state may cause difficulty in inserting the anti-slip material into the recess, and may cause the anti-slip material to be detached from the recess.

  Here, according to the above configuration, even if sink marks are generated due to the formation of the axial ribs, the sink marks are formed corresponding to the axial grooves. Does not affect the shape. Therefore, it is possible to avoid a possibility that the pressure contact state between the outer peripheral surface of the trunk portion and the inner peripheral surface of the concave portion is deteriorated due to the occurrence of sink marks.

Further, when the axial groove is formed shallow, the axial groove may be filled due to molding failure or the like, and the function may not be performed. However, according to the above configuration, sinking occurs in the portion where the axial groove is formed, so that even when the axial groove is formed shallow, a space as a groove is easily secured.
The pallet according to claim 3 is the invention according to claim 1 or claim 2, wherein a locking rib is connected to the inner surface of the head, and a locking protrusion is protruded from the bottom surface of the recess. The locking rib and the locking protrusion are in contact with each other in a state where the anti-slip material is inserted into the recess.
According to the above configuration, the anti-slip in a state of being fitted in the recess when the locking rib formed on the head of the anti-slip material and the locking protrusion formed on the recess of the pallet body abut. The material is prevented from further entering the recess. Therefore, when a load or a fork or the like comes into contact with the anti-slip material attached to the pallet body, the anti-slip material is prevented from entering the recess. Further, the provision of the locking rib makes it difficult for the shape of the anti-slip material to be deformed when the anti-slip material is inserted into the recess, and the anti-slip material can be inserted more easily. .

  According to the pallet of the present invention, it is possible to suppress detachment of the anti-slip material due to an excessive increase in the internal pressure of the space formed between the inner surface of the recess and the anti-slip material.

Hereinafter, the pallet of the present invention will be described with reference to the drawings.
As in the conventional pallet 2 described above, the pallet is composed of an upper deck 11 and a lower deck 12 having a rectangular shape in plan view, and a plurality of girders 13 having a rectangular tube shape and connecting the decks 11 and 12 together. A pallet body formed integrally with resin is provided (see FIG. 5A). Specifically, the girder 13 is disposed at the four corners of both decks 11, 12, the middle part of the four sides of both decks 11, 12, and the central part of both decks 11, 12. A fork insertion hole for inserting a fork such as a forklift or a hand fork is opened between the girders 13, and the pallet main body has four sides each having a pair of fork insertion holes. Form a feed pallet.

  As shown in FIGS. 1 and 4A, an attachment portion 20 for attaching the anti-slip material 30 is formed on the lower surface of the upper deck 11. The mounting portion 20 includes a cylindrical peripheral wall 21 projecting from the lower surface of the upper deck 11 and a columnar engagement projecting from the lower surface of the upper deck 11 and disposed at the center of the inner area of the peripheral wall 21. A concave portion 23 having a U-shaped upward cross section is formed in the inner region of the mounting portion 20. And the anti-slip | skid material 30 is inserted by the recessed part 23 of this attaching part 20. As shown in FIG. Further, the locking projection 22 is formed so that its height is lower than that of the peripheral wall 21, and the tip of the locking projection 22 is located substantially at the center of the recess 23. Here, T is a difference in protruding height between the locking protrusion 22 and the peripheral wall 21.

  A plurality of ribs extending in the vertical and horizontal directions are provided on the lower surface of the upper deck 11. The protruding height of the peripheral wall 21 of the mounting portion 20 described above is set to be approximately the same as the protruding height of the rib. ing.

  Next, the anti-slip material 30 will be described. As shown in FIG. 2, the anti-slip material 30 is formed in a bottomed cylindrical shape including a cylindrical body portion 32 and a head portion 31 that covers an opening on one end portion 32 a side of the body portion 32. Yes. As shown in FIG. 3 (a), the body portion 32 is formed with a press-fit portion 33 having a constant outer diameter on one end portion 32a side in the axial direction, and on the other end portion 32b side. A loose insertion portion 34 whose outer diameter is reduced toward the other end portion 32b is formed. The outer diameter of the press-fit portion 33 is set to be equal to the inner diameter of the recess 23 formed in the mounting portion 20 (the inner diameter of the tip portion of the peripheral wall 21), and the outer diameter of the loose insertion portion 34 is the inner diameter of the recess 23. It is set to be smaller. Note that the inner diameters of the press-fit portion 33 and the loose insertion portion 34 are both set to be larger than the outer diameter of the locking projection 22 formed on the mounting portion 20.

  A linear axial groove 35 extending in the axial direction from the other end 32 b of the body 32 toward the one end 32 a is recessed in the outer peripheral surface of the body 32. The axial groove 35 is recessed so as to longitudinally cut the press-fitting portion 33 and the loose insertion portion 34 in the axial direction. In the loose insertion portion 34, the depth of the concave portion is gradually increased toward the other end portion 32b. (See FIG. 2). In addition, in the outer periphery of the trunk | drum 32, the width | variety (length of the circumferential direction) of the site | part in which the axial direction groove | channel 35 is formed is larger than the width | variety (length of the circumferential direction) of the site | part in which the axial direction groove | channel 35 is not formed. It is getting smaller.

  In the present embodiment, a pair of axial grooves 35 are provided, and these axial grooves 35 are arranged so as to face each other with the axis of the trunk portion 32 interposed therebetween. In addition, a circumferential groove 36 extending in the circumferential direction of the body portion 32 is recessed in the outer peripheral surface of the press-fit portion 33 over the entire circumference. The circumferential groove 36 is recessed in the peripheral portion on the head 31 side in the press-fit portion 33 and communicates with the end portion on the head 31 side in the axial groove 35.

  As shown in FIG. 2 and FIG. 3A, the head 31 is formed in a disc shape whose diameter is equal to the outer diameter of the press-fit portion 33, that is, the inner diameter of the recess 23. A groove extending in a cross shape is formed on the upper surface (outer surface) of the head 31, and four non-slip portions 31 a having a fan shape in a plan view are projected at equal intervals by the groove.

  As shown in FIG. 3 (b), a locking rib 38 that projects in the radial direction of the head 31 and intersects in a cross shape protrudes from the lower surface of the head 31. The locking rib 38 is connected to a portion of the body portion 32 that is thinly formed by the axial groove 35, and is disposed perpendicular to the rib and connected to the inner peripheral surface of the body portion 32. And ribs. The protruding height t1 of the locking rib 38 is set so that the sum of the protruding height t1 and the thickness t2 of the head 31 is T (see FIG. 4A). In the present embodiment, of the locking ribs 38, the rib connected to the portion of the body portion 32 that is thinly formed by the axial groove 35 corresponds to the “axial rib” defined in the claims. It becomes the composition to do. Hereinafter, this rib will be described as the axial rib 37 in particular.

  As shown in FIG. 3A, a cylindrical leg portion 39 is provided at the other end portion 32 b of the body portion 32. The leg portion 39 is formed such that its outer diameter is smaller than the outer diameter at the end portion 32b of the trunk portion 32, and the leg portion 39 is provided with a notch 39a that communicates the inside and the outside in the radial direction. Yes. The notch 39a is formed so as to be located on an extension line of the axial groove 35 when viewed from the side. The length of the entire anti-slip material 30 in the axial direction is set to be shorter than the protruding height of the peripheral wall 21 formed in the mounting portion 20.

  Next, the aspect which inserts the anti-slip | skid material 30 with respect to the recessed part 23 of the attaching part 20 is demonstrated based on FIG. First, the anti-slip material 30 is disposed so that the other end 32b of the body 32 faces the opening of the recess 23 (see FIG. 4A). Then, the body 32 is inserted into the recess 23. At this time, since the outer diameter of the loose insertion portion 34 is smaller than the inner diameter of the concave portion 23 (particularly, the inner diameter of the distal end portion of the peripheral wall 21), the loose insertion portion 34 of the trunk portion 32 has a large resistance against the concave portion 23. It is inserted smoothly without causing it. Subsequently, the press-fit portion 33 is inserted into the recess 23 (see FIG. 4B). At this time, the space S formed between the other end portion 32 b of the body portion 32 and the bottom surface of the recess portion 23 is in a semi-sealed state that is communicated with the outer region only by the axial groove 35. After this, the volume of the space S becomes smaller depending on the degree of insertion of the anti-slip material 30 into the recess 23, but the air in the space S passes through the axial groove 35 and the outer region of the recess 23. Therefore, the internal pressure of the space S does not increase excessively.

  In addition, as shown in FIG. 4C, in the stage immediately before the head portion 31 is inserted into the recess 23, the air discharged from the space S through the axial groove 35 is retained in the axial groove 35. Not only the end on the head 31 side but also the circumferential groove 36 communicating with the end is discharged. And when the head 31 is inserted in the recessed part 23, while the insertion of the anti-slip | skid material 30 with respect to the recessed part 23 is completed, the space S will be in the completely sealed state (refer FIG.4 (d)).

  At this time, the tip of the locking rib 38 provided on the lower surface of the head portion 31 of the anti-slip material 30 and the tip of the locking projection 22 provided on the bottom surface of the recess 23 are in contact with each other. Further entry of the anti-slip material 30 into the recess 23 is suppressed. At this time, there is a gap between the inner peripheral surface of the trunk portion 32 and the outer peripheral surface of the locking projection 22, and the space S is formed between the lower surface of the head 31 and the upper surface of the locking projection 22. Including a space formed between the anti-slip material 30 and the recessed portion 23. In the state where the anti-slip material 30 is inserted into the recess 23, the tip of the anti-slip material 30 does not contact the bottom surface of the recess 23, and a gap is formed between them.

  As shown in FIG. 1 and FIG. 4A, the anti-slip material 30 inserted into the recess 23 has an outer peripheral surface of the press-fit portion 33 of the body portion 32 and an inner peripheral surface of the recess portion 23. By being in pressure contact with each other, it is locked in the recess 23. Further, in the state where the anti-slip material 30 is attached to the recess 23, the anti-slip part 31 a provided on the head 31 of the anti-slip material 30 protrudes from the opening of the recess 23. Then, when the fork inserted into the fork insertion hole and the anti-slip portion 31a of the anti-slip material 30 come into contact with each other, slip of the fork with respect to the pallet is suppressed.

Next, operational effects in the present embodiment will be described below.
(1) In the present embodiment, the axial groove 35 extending from the other end portion 32 b of the body portion 32 to the one end portion 32 a is provided on the outer peripheral surface of the anti-slip material 30. The axial groove 35 is a space S formed between the other end portion 32 b of the body portion 32 and the bottom surface of the recess portion 23 when the anti-slip material 30 is inserted into the recess portion 23 of the attachment portion 20. And the outer region of the recess 23 are communicated with each other.

  Thereby, when the anti-slip material 30 is inserted into the recess 23, the air in the space S is discharged to the outer region of the recess 23 through the axial groove 35, and the internal pressure of the space S is excessively increased. It is suppressed. Therefore, detachment of the anti-slip material 30 from the pallet body due to excessive increase in the internal pressure of the space S when the anti-slip material 30 is inserted into the recess 23 can be effectively suppressed. .

  The axial groove 35 is formed so as to extend in the axial direction of the body portion 32, that is, in the insertion direction of the anti-slip material 30 with respect to the recess 23. Therefore, when inserting the anti-slip material 50, the axial groove 35 is not crushed by the force of pushing the anti-slip material 50, and the air in the space S can be discharged more reliably.

  (2) In the present embodiment, the circumferential groove 36 that extends in the circumferential direction of the body portion 32 and communicates with the end portion on the head 31 side in the axial groove 35 is provided on the outer circumferential surface of the anti-slip material 30. Thus, when the anti-slip material 30 is inserted into the recess 23, the air discharged from the space S through the axial groove 35 is not only the end of the axial groove 35 on the head 31 side. Then, it is also discharged from the circumferential groove 36 communicated with the end portion. Therefore, the air in the space S is efficiently discharged, and the increase in the internal pressure of the space S can be suppressed more effectively.

  Moreover, according to the said structure, what was gathered together as the meat | float accumulation which may arise when inserting the press-fit part 33 can be absorbed in the circumferential groove | channel 36. FIG. Therefore, it is difficult for the meat pool to be generated, and the occurrence of poor mounting of the anti-slip material 30 due to the formation of the meat pool can be suppressed.

  Further, the presence of the circumferential groove 36 in the press-fit portion 33 in the body portion 32 reduces the contact area between the outer peripheral surface of the press-fit portion 33 and the inner peripheral surface of the recess 23. Therefore, the insertion resistance of the anti-slip material 30 to the recess 23 is reduced, and the anti-slip material 30 can be inserted with a relatively small force.

  (3) In the present embodiment, as one configuration of the mounting portion 20, the locking protrusion 22 is provided in the inner area of the peripheral wall 21 (the bottom surface of the recess 23), and the locking member 30 is engaged with the lower surface of the head 31. A stop rib 38 is projected. The locking rib 38 and the locking projection 22 are configured to contact each other in a state where the anti-slip material 30 is inserted into the recess 23.

  The presence of the locking rib 38 increases the strength of the anti-slip material 30 against the force acting in the radial direction. Therefore, when the anti-slip material 30 is inserted into the recess 23, the shape of the anti-slip material 30 is not easily deformed, and the anti-slip material 30 can be inserted more easily.

  Further, in a state where the anti-slip material 30 is inserted into the recess 23, the anti-slip material 30 inserted into the recess 23 is brought into contact with the engaging rib 38 and the engaging protrusion 22. Further entry into is prevented. Therefore, when the load or the fork or the like comes into contact with the anti-slip material 30 attached to the pallet body, the anti-slip material 30 is prevented from entering the recess 23.

  The entire length of the anti-slip material 30 in the axial direction is set to be approximately the same as the protruding height of the peripheral wall 21 formed on the mounting portion 20, and the tip of the anti-slip material 30 and the bottom surface of the recess 23 are brought into contact with each other. Thus, a method of preventing the slip-preventing material 30 from entering the recess 23 can be considered. However, since the protruding height of the peripheral wall 21 is set in accordance with the rib provided on the upper deck 11, it tends to be larger than necessary for the function of accommodating the anti-slip material 30. Therefore, in the configuration in which the tip of the anti-slip material 30 and the bottom surface of the recess 23 are in contact with each other, the anti-slip material 30 must also be formed larger than necessary in the axial direction. Here, according to the above configuration, the contact of the locking rib 38 and the locking projection 22 suppresses the entry of the anti-slip material 30 into the recess 23, so that the protruding height of the peripheral wall 21 is reduced. Even if it is set large, it is not necessary to enlarge the anti-slip material 30 in accordance with the protruding height.

  (4) In the present embodiment, the axial ribs 37 are connected to the inner peripheral surface of the portion of the body portion 32 formed thin by the axial grooves 35 in the trunk portion 32. Thereby, the intensity | strength of the anti-slip | skid material 30 is raised with respect to the force which acts on the axial direction.

  Further, even if sink marks are generated in the trunk portion 32 by forming the axial ribs 37, the sink marks are formed corresponding to the axial grooves 35, so that the sink marks are formed on the outer peripheral surface of the trunk portion 32. The surface shape is not affected. Therefore, it is possible to avoid a possibility that the pressure contact state between the outer peripheral surface of the trunk portion 32 and the inner peripheral surface of the recess 23 is deteriorated due to the occurrence of sink marks. Further, according to the above configuration, sink marks occur in the portion where the axial groove 35 is formed. Therefore, even when the axial groove 35 is shallowly formed, a space as a groove is easily secured on the outer peripheral surface of the body portion 32.

  (5) In this embodiment, the loose insertion part 34 set so that the outer diameter is smaller than the inner diameter of the recess 23 is formed on the body part 32. Thereby, the contact area between the outer peripheral surface of the trunk portion 32 and the inner peripheral surface of the recess 23 is reduced, the insertion resistance of the anti-slip material 30 to the recess 23 is reduced, and the anti-slip material 30 is inserted with a relatively small force. It will be able to fit. Further, since the loose insertion portion 34 is formed in a shape whose outer diameter is reduced toward the other end portion 32 b, the anti-slip material 30 can be easily inserted into the recess 23.

In addition, this embodiment can also be changed and embodied as follows.
In the present embodiment, the axial groove 35 is formed from the other end 32b to the one end 32a of the body portion 32. However, if it is formed at least on the outer peripheral surface of the press-fit portion 33, the loose insertion portion 34 may not be provided on the outer peripheral surface. Further, the axial groove 35 may not be formed so that the end portion on the head portion 31 side reaches the end portion 32a on one side of the body portion 32, and in the central portion of the press-fit portion 33 in the axial direction, You may form so that the edge part by the side of the head 31 may be located.

  In the present embodiment, the axial groove 35 is formed in a linear shape extending in the axial direction. However, the shape of the axial groove 35 is not limited to a linear shape, and the one from the other end 32b side of the trunk portion 32 is one. Any shape may be used as long as it is formed toward the end portion 32a side. For example, the axial groove 35 may be formed in a spiral shape with respect to the outer peripheral surface of the body portion 32, or may be formed in a wave shape from the other end portion 32b side of the body portion 32 toward the one end portion 32a side. Also good. Moreover, the shape which combined these may be sufficient. The “axial groove” in the claims includes not only the above-described linear shape, spiral shape, and wave shape, but also as a whole from the other end portion 32b side of the body portion 32 to the one end portion 32a side. It includes all shapes that are formed toward and function in the same manner as in the above embodiment.

  In the present embodiment, the pair of axial grooves 35 are provided, but the number of the axial grooves 35 is not limited to this, and only one or three or more may be provided. Further, in the present embodiment, the pair of axial grooves 35 are disposed so as to face each other with the axis of the trunk portion 32 interposed therebetween, but the arrangement configuration of the axial grooves 35 is not limited thereto, and the trunk portion 32 is not limited thereto. It may be arranged at any position on the inner peripheral surface.

  In the present embodiment, the circumferential groove 36 is formed over the entire circumference of the body portion 32, but the outer circumferential surface of the body portion 32 has a shape communicating with the end portion on the head 31 side in the axial groove 35. May be partially formed. Further, a plurality of circumferential grooves 36 may be arranged side by side in the axial direction. In the case of such a configuration, it is possible to more reliably absorb the collected material as the meat reservoir into the circumferential groove 36. The circumferential groove 36 may not be provided.

  In the present embodiment, a rib extending in the radial direction of the head 31 and intersecting in a cross shape is formed as the locking rib 38 on the lower surface of the head 31. However, the shape of the locking rib 38 is not limited to this. It is not something that can be done. For example, only one of the axial ribs 37 constituting the locking ribs 38 and the ribs orthogonal to the axial ribs 37 may be provided so as to be formed in a single shape, or formed thin by the axial grooves 35. You may provide the latching rib 38 irrespective of a site | part. Further, the locking rib 38 may not be formed so as to extend in the radial direction of the head portion 31, and may not be connected to the inner peripheral surface of the trunk portion 32. Furthermore, axial ribs 37 extending in the axial direction may be provided separately from the locking ribs 38 on the inner peripheral surface of the body portion 32. In this case, the axial rib 37 may be provided in a portion formed thin by the axial groove 35 or may be provided regardless of the same portion.

  In the present embodiment, the locking projection 22 is provided on the bottom surface of the recess 23 and the locking rib 38 is provided on the lower surface of the head 31, and both of these are provided in the state where the anti-slip material 30 is inserted into the recess 23. Although the members are configured to contact each other, the two members may be configured not to contact each other. That is, the sum of the protruding height t1 of the locking rib 38 and the thickness t2 of the head 31 is configured so that the difference in protruding height between the locking protrusion 22 and the peripheral wall 21 is smaller than T. May be. In the case of such a configuration, for example, in the state where the anti-slip material 30 is inserted into the recess 23, the other end 32 b or the leg 39 of the trunk portion 32 and the bottom surface of the recess 23 abut. By comprising in this way, immersion of the anti-slip | skid material 30 in the recessed part 23 can be suppressed. Further, only one of the locking protrusion 22 and the locking rib 38 may be formed, or both members may not be provided.

  In the present embodiment, the loose insertion portion 34 is set to the trunk portion 32 so that the outer diameter thereof is smaller than the inner diameter of the concave portion 23. The entire portion 32 may be the press-fit portion 33. Further, the loose insertion portion 34 is formed in a shape whose outer diameter is reduced toward the other end portion 32b, but any shape can be used as long as the outer diameter is smaller than the inner diameter of the recess 23. It may be formed in such a shape.

  In the present embodiment, four anti-slip portions 31a having a fan shape in plan view are provided on the upper surface of the head 31 so as to protrude at equal intervals. However, in the state where the anti-slip material 30 is attached to the recess 23, the opening of the recess 23 is provided. The number and shape of the anti-slip portions 31a are not particularly limited as long as they are formed so as to protrude from the base. Further, in addition to the anti-slip portion 31 a, a part of the upper surface and the outer peripheral surface of the head portion 31 may protrude from the opening of the recess 23. In addition, when comprised in this way, the anti-slip | skid part 31a does not need to be provided in particular.

  In the present embodiment, the inner peripheral shape of the concave portion 23 and the outer peripheral shape of the trunk portion 32 are formed to have a circular cross section. However, the shapes of both are the same, and the trunk portion 32 can be inserted into the concave portion 23. Any shape may be used. For example, it may be formed in a polygonal cross section, or may be formed in an elliptical cross section.

  -You may provide the rib and protrusion as a press part which press the anti-slip | skid material 30 inserted by the recessed part 23 with respect to the internal peripheral surface of the recessed part 23, ie, the internal peripheral surface of the surrounding wall 21. FIG. When such a pressing part is provided, the detachment of the anti-slip material 30 from the recess 23 can be more effectively suppressed. In addition, this press part is formed in the internal peripheral surface of the surrounding wall 21 so that the trunk | drum 32 of the anti-slip | skid material 30 inserted in the recessed part 23 can be pressed.

  A space S2 formed between the other end portion 32b of the body portion 32 and the bottom surface of the recess portion 23 between the anti-slip material 30 and the recess portion 23 as in the conventional configuration shown in FIG. And a space S <b> 1 formed between the lower surface of the head 31 and the upper surface of the locking projection 22 may be formed. That is, the inner diameter of the press-fitting portion 33 and the loose insertion portion 34 may be configured to be equal to the outer diameter of the locking projection 22. When configured in this manner, a second axial groove extending from the other end 32b of the barrel 32 toward the one end 32a is provided on the inner peripheral surface of the barrel 32, and this second axial direction is provided. By connecting the space S1 and the space S2 through the groove, the air in both the spaces S1 and S2 can be discharged.

  In the present embodiment, in the pallet main body, the mounting portion 20 is provided on the lower surface of the upper deck 11 and the anti-slip material 30 is attached to the lower surface of the upper deck 11. You may comprise so that 30 may be attached. For example, when the anti-slip material 30 is attached to the upper surface of the upper deck 11, a recess 23 that opens to the upper surface is formed in the upper deck 11 as in the conventional configuration shown in FIG. The anti-slip material 30 may be attached to the recess 23.

  In the present embodiment, the present invention is embodied in a four-way pallet, but the present invention may be embodied in another pallet such as a two-way pallet.

The half sectional view showing the crevice and antislip material of this embodiment. The perspective view which shows the anti-slip | skid material of this embodiment. (A) is a side view showing the anti-slip material of this embodiment, (b) is a bottom view showing the anti-slip material of this embodiment. (A)-(d) is sectional drawing which shows the aspect which inserts the anti-slip | skid material of this embodiment in a recessed part. (A) is a perspective view which shows the conventional pallet, (b) is sectional drawing which shows the aspect which inserts the conventional non-slip | skid material in a recessed part.

Explanation of symbols

  S: Space, 1, 2 ... Pallet, 10 ... Pallet body, 20 ... Mounting portion, 22 ... Locking projection, 23 ... Recess, 30 ... Stopping material, 31 ... Head, 32 ... Body, 32a, 32b ... End part, 35 ... axial groove, 36 ... circumferential groove, 37 ... axial rib, 38 ... locking rib.

Claims (3)

An anti-slip material having a cylindrical body and a head that covers one end opening of the body is inserted so as to seal the recess against the recess formed in the pallet body made of synthetic resin. In the fitted pallet,
The anti-slip material is provided with an axial groove extending on the outer peripheral surface of the body portion from the other end side to the one end side of the body portion, and the axial groove is formed on the anti-slip material. A space formed between the other end of the body and the bottom surface of the recess and the outer region of the recess are communicated with each other when inserted into the recess ;
The anti-slip material is provided with a circumferential groove extending in a circumferential direction of the body portion on an outer peripheral surface of the body portion, and the circumferential groove communicates with an end portion on a head side of the axial groove. Pallet characterized by. An anti-slip material having a cylindrical body and a head that covers one end opening of the body is inserted so as to seal the recess against the recess formed in the pallet body made of synthetic resin. In the fitted pallet,
The anti-slip material is provided with an axial groove extending on the outer peripheral surface of the body portion from the other end side to the one end side of the body portion, and the axial groove is formed on the anti-slip material. A space formed between the other end of the body and the bottom surface of the recess and the outer region of the recess are communicated with each other when inserted into the recess ;
An axial rib is provided on the inner peripheral surface side of the barrel portion, and an end surface of the axial rib is connected to a portion of the inner peripheral surface of the barrel portion that is formed thin by the axial groove. And a palette. A locking rib is connected to the inner surface of the head, a locking projection is provided on the bottom surface of the recess, and the locking rib and the locking are in a state where the anti-slip material is inserted into the recess. The pallet according to claim 1, wherein the protrusions are in contact with each other.

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