JP6347691B2 - Non-slip piece mounting structure - Google Patents

Description

  The present invention relates to a non-slip piece mounting structure in which a non-slip piece having anti-slip means on an upper surface thereof is fitted into a fitting recess formed in a transport device and is prevented from coming off.

  Conventionally, as this kind of non-slip piece mounting structure, when the non-slip piece is fitted into a fitting recess provided on the upper surface of a conveying device (for example, pallet), a plurality of locking elastic pieces provided on the non-slip piece are obtained. Once it is elastically deformed and then restored, it is locked from below onto the inner surface protrusion provided on the inner surface of the fitting recess, and by the contact between the locking elastic piece and the bottom of the fitting recess The thing of the structure which receives the load which concerns on a non-slip piece is known (for example, refer patent document 1).

Japanese Patent Laying-Open No. 2005-263261 (FIGS. 6 and 7)

  In the conventional anti-skid piece mounting structure described above, there is a problem that a heavy load is placed on the anti-slip piece and the locking elastic piece is damaged. On the other hand, if the strength of the locking elastic piece is increased so as to be able to withstand a large load, the locking elastic piece is difficult to elastically deform and it is difficult to attach the non-slip piece to the fitting recess. Has occurred.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a non-slip piece mounting structure that has higher strength than conventional ones and can be easily mounted.

In order to achieve the above-mentioned object, the invention according to claim 1 is to provide a non-slip piece for fitting a non-slip piece having anti-slip means on the upper surface thereof into an inside of a fitting recess formed in the transport device to prevent it from coming off. In the mounting structure, a base portion having the anti-slip means on the upper surface and closing the upper surface opening of the fitting recess, and a plurality of abutting protrusions protruding from a plurality of dispersed positions of the lower surface outer edge portion of the base portion And a plurality of locking elastic pieces projecting greatly downward from the contacting projections from a plurality of dispersed positions on the lower outer edge of the base portion different from the plurality of contacting projections, and the locking A locking projection that protrudes laterally from the lower end of the elastic piece, a projection protruding from the inner surface of the fitting recess, the abutment projection contacting from above, and the locking projection locking from below An inner surface protrusion that restricts the vertical movement of the anti-slip piece. A locking piece mounting structure.

According to a second aspect of the present invention, the base portion has a circular shape, and the abutment protrusion abuts against the inner surface protrusion from above at an arbitrary rotational position of the anti-slip piece with respect to the fitting recess. The non-slip piece mounting structure according to claim 1, wherein the locking protrusion is locked to the inner side surface protruding portion from below.

A third aspect of the present invention, antislipping according the abutment projection and 請 Motomeko 1 or 2 abutting surface of each other that have a tapered surface narrowed toward a lower portion of the inner surface projections It is a piece mounting structure.
According to a fourth aspect of the present invention, there is provided a bottom wall provided inside the fitting recess, the bottom end wall where the plurality of locking elastic pieces abut against each other with a gap, and from a position on the inner side of the lower edge of the base portion. A supporting auxiliary protrusion that protrudes larger than the locking elastic piece and is abutted against the bottom wall with a gap smaller than a gap between the locking elastic piece and the bottom wall. It is a non-slip piece attachment structure given in any 1 claim.

[Invention of Claim 1]
In the anti-slip piece mounting structure according to claim 1, an elastic piece for locking the anti-slip piece to prevent the anti-slip piece from slipping into the fitting recess on the lower surface of the base portion of the anti-slip piece, and a lower side with respect to the fitting recess of the anti-slip piece Since the abutment protrusion for restricting the movement of the anti-slip piece is provided separately, the elasticity of the locking elastic piece is ensured so that the attachment work to the fitting recess of the anti-slip piece can be easily performed. And the intensity | strength of the contact protrusion can be made high so that it can endure a bigger load than before. That is, according to the anti-skid piece mounting structure of the present invention, it is possible to increase the strength of the anti-slip piece as compared with the conventional art and to easily perform the anti-skid piece mounting operation.

In addition, since the plurality of abutting protrusions are disposed on the outer edge of the lower surface of the base portion, the non-slip piece is stabilized with respect to the fitting recess. In addition, since the plurality of abutting protrusions and the plurality of locking elastic pieces are both distributed at a plurality of positions on the outer edge portion of the lower surface of the base portion, the space between the locking elastic pieces is contacted. The contact protrusion can be disposed, and the size of the non-slip piece mounting structure can be reduced.
[Invention of claim 2]
In the anti-skid piece mounting structure according to claim 2, the base portion has a circular shape, and the abutment protrusion abuts against the inner surface protrusion from above and engages at any rotational position of the anti-slip piece with respect to the fitting recess. Since the stop protrusion is locked to the inner side protrusion from below, it is easy to attach the anti-slip piece to the fitting recess.

[Invention of claim 3]
In the non-slip piece mounting structure according to claim 3, since the contact surfaces of the contact protrusion and the inner surface protrusion are tapered surfaces that are narrowed downward, the contact protrusion and the inner protrusion The surface contact with the side protrusion is facilitated, the stress can be dispersed, the anti-slip piece and the fitting recess are centered, and the inner side protrusion of the locking protrusion of the locking elastic piece The locking with is stable. Furthermore, when the anti-slip piece is fitted into the fitting recess, the tapered surface of the inner side protrusion can be used as a guide for elastically deforming the locking elastic piece.
[Invention of claim 4]
In the non-slip piece mounting structure according to claim 4, a support auxiliary protrusion that protrudes larger than the locking elastic piece from a position inside the lower edge of the base portion is provided, and a gap is formed in the bottom wall of the fitting recess. Since it is abutted, when the anti-skid piece or the fitting recess is deformed, the support auxiliary protrusion and the bottom wall come into contact with each other to distribute the load, and the anti-slip piece and the fitting recess can withstand a larger load than before. It becomes like this.

The perspective view of the pallet which is the conveying instrument which concerns on one Embodiment of this invention. Partially enlarged perspective view of pallet Perspective view of fitting recess Top side perspective view of non-slip piece Partially broken perspective view of non-slip piece Bottom perspective view of non-slip piece Partially broken perspective view of non-slip piece mounting structure Side sectional view of non-slip piece mounting structure Bottom view of non-slip piece

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a resin pallet 10 as an example of a transport device. The pallet 10 has a crosspiece structure, and is provided with a plurality of non-slip portions 12 for preventing a load from slipping on a load placement surface 11 which is an upper surface of the pallet 10 generally called a “deck surface”. As shown in FIG. 2, each of the anti-slip portions 12 is formed by fitting and mounting an anti-slip piece 30 inside a cylindrical support wall 20 provided in the pallet 10.

  The cylindrical support wall 20 is provided in a state where the upper end surface is flush with the load placement surface 11, and the “bottom wall” of the present invention is placed on the lower half inside the cylindrical support wall 20 as shown in FIG. The bottom rib 22 is provided. The bottom rib 22 includes a pair of bottom ribs 22A and 22A extending in the diameter direction in the cylindrical support wall 20 and orthogonal to each other. In the cylindrical support wall 20, the upper part of the bottom rib 22 is a fitting recess 21 according to the present invention.

  In the fitting recess 21, tool insertion grooves 20 </ b> A are formed at four locations that divide the inner surface into four equal parts in the circumferential direction. Each tool insertion groove 20 </ b> A is formed by recessing the upper side of the inner side surface of the fitting recess 21 from the intersection with the bottom rib 22 </ b> A. The groove inner surface of the tool insertion groove 20A gradually becomes shallower downward and intersects the lower end portion of the inner surface of the fitting recess 21, and the line of intersection is the inner surface and bottom of the cylindrical support wall 20 The line of intersection with the upper surface of the rib 22A is a circular arc that is slightly extended to the left and right sides.

  A plurality of inner surface protrusions 23 are formed at the intermediate position in the vertical direction on the inner surface of the fitting recess 21. The inner surface protrusion 23 is formed by dividing the protrusion ring extending around the entire inner surface of the fitting recess 21 into four parts by the tool insertion groove 20A. Moreover, the cross-sectional shape of the inner surface protrusion 23 is a right triangle, and a locking surface 23B orthogonal to the inner surface of the fitting recess 21 is provided on the lower surface side of the inner surface protrusion 23, and the inner surface protrusion 23 is provided. A taper surface 23 </ b> A inclined with respect to the inner surface of the fitting recess 21 is provided on the upper surface side.

  As shown in FIGS. 4 and 5, the non-slip piece 30 has an anti-slip member 31 made of elastomer, which is a soft synthetic resin, on the upper surface of a non-slip piece body 30 </ b> H that is a molded product of a hard synthetic resin (for example, polyolefin). The structure is fused. As shown in FIG. 5, the non-slip piece main body 30 </ b> H includes a contact protrusion 44, a locking elastic piece 42, and a support auxiliary protrusion 45 on the lower surface of the base portion 41.

  The base portion 41 has a shape in which a central hole 41H is formed through a disc. The upper surface 41J of the base portion 41 is provided with an inclined portion 41C that is inclined so as to gently fall outward on the entire outer edge, and the horizontal portion 41E inside the inclined portion 41C of the upper surface 41J has a radial direction thereof. An annular groove 41B and an annular depression 41A are formed at the intermediate position and the inner edge position. Further, the outer surface 41 </ b> D of the base portion 41 is parallel to the axial direction of the base portion 41.

  The non-slip member 31 is molded so as to cover the upper surface 41J and the outer surface 41D of the base portion 41, and has intermediate engagement protrusions 33 engaged with the annular groove 41B and the annular recess 41A of the base portion 41 in an uneven manner. The structure includes an inner edge fitting protrusion 32 and an outer edge fitting protrusion 34 fitted to the outside of the outer surface 41D of the base portion 41. Further, the upper surface 31J of the anti-slip member 31 has an inclined portion 31B and a horizontal portion 31A inside the inclined portion 31B on the entire outer edge corresponding to the base portion 41. Further, the inner surface of the center hole 31H of the anti-slip member 31 and the inner surface of the center hole 41H of the base portion 41 are flush with each other.

  The support auxiliary projection 45 has a cylindrical shape that hangs down from the opening edge of the center hole 41H on the lower surface of the base portion 41, and the lower end of the support auxiliary projection 45 has a locking elastic piece 42 and a contact projection 44. It is located below the lower end of. The support auxiliary protrusion 45 is divided into two vertically by a pair of slits 45S and 45S (see FIG. 6).

  As shown in FIG. 9, the locking elastic pieces 42 and the contact protrusions 44 are provided, for example, three by three, and are alternately arranged along the outer edge of the lower surface of the base portion 41. The lateral widths of the abutment protrusions 44 and the locking elastic pieces 42 are larger than the lateral widths of the non-engaged portions between the adjacent inner surface protrusions 23 and 23 (that is, the lateral width of the tool insertion groove 20A). The locking elastic piece 42 is slightly larger in width than the abutment protrusion 44.

  As shown in FIG. 6, the abutment protrusion 44 has an arc shape concentric with the support auxiliary protrusion 45, and reinforcing blocks 44 </ b> L and 44 </ b> L are provided at both widthwise end portions on the inner surface of the abutment protrusion 44. Are integrally formed. Further, as shown in FIG. 5, the abutting protrusion 44 is positioned on the outer surface 44 </ b> C side between the outer surface 41 </ b> D of the base portion 41 and the outer surface 34 </ b> S of the outer edge fitting protrusion 34 of the anti-slip member 31. The base portion 41 is parallel to the central axis. Further, a tapered surface 44 </ b> A that is a part of a conical surface concentric with the support auxiliary protrusion 45 is formed between the lower surface of the contact protrusion 44 and the outer surface 44 </ b> C. The tapered surfaces 44A of all the contact protrusions 44 can come into surface contact with the taper surface 23A of the inner surface protrusion 23 in the fitting recess 21.

  As shown in FIG. 6, the locking elastic piece 42 has a structure in which the locking protrusion 43 protrudes from the lower end portion of the outer surface of the flat plate-like protruding piece that is suspended from the base portion 41 and faces the support auxiliary protruding portion 45. There is no. Further, a reinforcing rib 42L extending in the vertical direction is provided at the center in the lateral direction of the inner side surface of the locking elastic piece 42. Further, as shown in FIG. 5, the locking protrusion 43 has an outer surface 43C parallel to the central axis of the base portion 41, and a support auxiliary protrusion is provided between the lower surface of the locking protrusion 43 and the outer surface 43C. A tapered surface 43A which is a part of a conical surface concentric with the portion 45 is formed, and the upper surface of the locking projection 43 is a horizontal locking surface 43B.

  The description about the structure of the anti-skid piece mounting structure which consists of the anti-skid piece 30 and the fitting recessed part 21 of this embodiment is above. Next, the effect by this anti-skid piece attachment structure is demonstrated. In order to attach the non-slip piece 30 to the fitting recess 21, the anti-slip piece 30 is inserted into the fitting recess 21 with the center axis of the anti-slip piece 30 and the center axis of the fitting recess 21 roughly aligned. Then, the tapered surfaces 43A of the locking projections 43 of the plurality of locking elastic pieces 42 included in the non-slip piece 30 come into contact with the tapered surfaces 23A of the fitting recesses 21, and the anti-slip piece 30 is in contact with the fitting recesses 21. (I.e., the center axis of the anti-slip piece 30 and the center axis of the fitting recess 21 coincide).

  When the non-slip piece 30 is pushed into the fitting recess 21 in this state, the plurality of locking elastic pieces 42 are elastically deformed by the sliding contact between the tapered surfaces 23A and 43A, and the locking projections As shown in FIGS. 7 and 8, the locking surface 43B of the locking projection 43 is locked to the locking surface 23B of the inner surface projection 23 from below as shown in FIGS. To do. As a result, the non-slip piece 30 is prevented from falling into the fitting recess 21. By the above, the attachment operation | work with respect to the inside of the fitting recessed part 21 of the non-slip piece 30 is completed.

  In order to remove the non-slip piece 30 from the fitting recess 21, a tool is inserted through the gap of the bottom rib 22, the locking elastic piece 42 is bent inward, and a minus driver or the like is inserted into the tool insertion groove 20 </ b> A. What is necessary is just to insert and slip out the non-slip piece 30 from the fitting recessed part 21. FIG.

  When the attachment of the anti-skid piece 30 is completed, the taper surfaces 44A of the plurality of contact protrusions 44 of the anti-slip piece 30 come into contact with the taper surfaces 23A of the inner surface protrusions 23 from above, and the anti-slip piece 30 The downward movement is regulated while being centered with respect to the fitting recess 21. Further, by being centered as described above, the locking between the locking protrusion 43 of the locking elastic piece 42 and the inner surface protrusion 23 is stabilized. Further, as shown in FIG. 9, the non-engaging portion between the inner surface protrusions 23 and 23 is disposed at a position that divides the fitting recess 21 into four equal parts in the circumferential direction. Since the elastic piece 42 and the contact protrusion 44 are respectively arranged at positions where the outer edge of the base portion 41 is equally divided into three in the circumferential direction, all of the locking elastic piece 42 or the contact protrusion 44 is provided. Is prevented from overlapping all of the non-engaging portions between the adjacent inner surface protrusions 23, 23.

  Further, when the attachment of the anti-slip piece 30 is completed, as shown in FIG. 8, the outer edge fitting protrusion 34 in the anti-slip member 31 and the part on the outer edge fitting protrusion 34 side in the inclined part 31B are fitted into the fitting recess 21. The anti-slip member 31 protrudes from the load placement surface 11 of the pallet 10 (see FIG. 1), and the upper surface of the base portion 41 is flush with the load placement surface 11 or the load placement surface 11. It will be in the state located slightly higher. In addition, at the bottom in the fitting recess 21, the lower end surface of the support auxiliary protrusion 45 is in a state of facing the bottom rib 22 of the fitting recess 21 with a slight gap S therebetween.

  Now, when a load is placed on the non-slip piece 30 attached to the pallet 10, the anti-slip member 31 and the load are pressed by the load of the load and frictionally engaged. Here, even if the load slides on the load mounting surface 11 and is arranged on the anti-slip piece 30, the outer edge portion of the anti-slip member 31 is received in the fitting recess 21, and the load of the anti-slip member 31 Of these, the first contact with the inclined portion 31B makes it possible to smoothly slide the load onto the non-slip piece 30. Further, since the anti-slip member 31 has a structure in which the inner edge portion of the base portion 41 is covered from the inside and the outer edge portion of the base portion 41 is covered from the outside, the anti-slip member 31 is scooped from the base portion 41. It is also prevented from being peeled off. Then, the load is prevented from slipping on the load placement surface 11 by the frictional engagement between the load and the anti-slip member 31.

  Here, in the anti-slip piece mounting structure of the present embodiment, since the abutment protrusion 44 and the locking elastic piece 42 are provided separately, the mounting work of the anti-slip piece 30 to the fitting recess 21 is facilitated. While ensuring the elasticity of the locking elastic piece 42 so as to be able to do so, the strength of the abutment protrusion 44 can be made higher than before. That is, the strength of the non-slip piece 30 can be increased to withstand a large load, and the mounting work of the non-slip piece 30 can be easily performed.

  Further, since the contact surfaces of the contact protrusion 44 and the inner surface protrusion 23 are tapered surfaces 23A and 44A which are narrowed downward, the contact protrusion 44 and the inner surface protrusion The surface contact with the portion 23 is facilitated, and the stress can be dispersed. This also makes it possible for the non-slip piece 30 to withstand a larger load than before. Further, when the inner wall of the non-slip piece 30 or the fitting recess 21 is deformed by a load, the support auxiliary protrusion 45 and the bottom rib 22 of the fitting recess 21 come into contact with each other, and the contact protrusion 44 and the inner side protrusion Since the load on the portion 23 is reduced, this also makes it possible to withstand a larger load than before. Further, the inner surface protrusion 23 of the fitting recess 21 engages with a load receiving portion that receives a load from the contact protrusion 44 and the locking elastic piece 42 to prevent the slip piece 30 from coming off. Since it is used as both the stopper and the load receiving part and the locked part are provided separately, the antiskid piece mounting structure can be downsized.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.

(1) In the above embodiment, an example in which the non-slip piece 30 is attached to the load placement surface of the pallet 10 is shown. However, the bottom surface of the spar that contacts the floor or the like of the pallet 10 or the forklift of the pallet 10 The non-slip piece may be attached to the upper surface or the like in the fork insertion hole that comes into contact with the fork, and the present invention may be applied to the attachment structure.

(2) In the above-described embodiment, the pallet 10 is illustrated as an example of the conveying device. However, as the conveying device, the upper surface of the carriage or the upper surface of the roll support board (for example, refer to paragraph [0025] of JP 2010-052790 A). Alternatively, the non-slip piece may be attached to the lower surface and the present invention may be applied to the attachment structure.

(3) Although the anti-skid piece 30 of the above embodiment has a circular planar shape, the present invention may be applied to anti-skid pieces whose planar shape is an ellipse or a quadrangle.

(4) In the non-slip piece 30 of the above embodiment, the abutment protrusion 44 is eliminated, and the support auxiliary protrusion 45 is abutted against the bottom rib 22 as the abutment protrusion according to the present invention. Good.

10 Pallet (conveying equipment)
11 Loading surface 21 Fitting recess 22 Bottom rib (bottom)
23 inner surface protrusion 23A taper surface (load receiving part)
23B Locking surface (locked part)
30 Non-slip piece 31 Non-slip member (slip prevention means)
41 Base part 41H Center hole 42 Locking elastic piece 43 Locking protrusion 43A Tapered surface 44 Contacting protrusion 44A Tapered surface S Gap

Claims (4)

In the anti-slip piece mounting structure, the anti-slip piece having the anti-slip means on the upper surface is fitted inside the fitting recess formed in the transport device to prevent it from coming off.
A base portion having the non-slip means on the upper surface and closing the upper surface opening of the fitting recess;
A plurality of abutting protrusions protruding from a plurality of dispersed positions on the lower outer edge of the base portion;
A plurality of locking elastic pieces projecting greatly below the abutting protrusion from a plurality of dispersed positions on the lower surface outer edge of the base portion different from the plurality of abutting protrusions;
A locking projection protruding laterally from a lower end of the locking elastic piece;
An inner surface protrusion that protrudes from the inner surface of the fitting recess, the contact protrusion contacts from above, and the locking protrusion locks from below to restrict the vertical movement of the anti-slip piece; A non-slip piece mounting structure. The base portion is circular,
At an arbitrary rotation position of the non-slip piece with respect to the fitting recess, the abutment protrusion comes into contact with the inner surface protrusion from above and the locking protrusion engages with the inner surface protrusion from below. The non-slip piece mounting structure according to claim 1. The anti-slip piece mounting structure according to the abutment projection and 請 Motomeko 1 or 2 abutting surface of another of the inner surface projections that have a tapered surface narrowed downward. A bottom wall provided inside the fitting recess, the plurality of locking elastic pieces being faced with a gap;
The base protrudes larger than the locking elastic piece from the inner side of the lower edge of the lower surface, and is abutted against the bottom wall with a gap smaller than the gap between the locking elastic piece and the bottom wall. The non-slip piece mounting structure according to any one of claims 1 to 3, further comprising a support auxiliary protrusion.

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