JPS6344625B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a non-slip material mounting structure, and more particularly to a non-slip material mounting structure in which a non-slip material made of an elastic material such as rubber is provided at appropriate locations on a synthetic resin molded product.

In recent years, synthetic resins have been widely used in place of wood and metal due to their excellent water resistance and corrosion resistance.

However, although synthetic resin molded products have the above-mentioned advantages due to the inherent properties of the synthetic resin, they also have the disadvantage of being slippery. In particular, when pallets for transporting cargo are manufactured from synthetic resin, slipping can occur between the cargo and the pallet, between the pallets, and between the pallets and the forks of a forklift, which is extremely dangerous during work. Sometimes.

As a method for preventing slippage of such synthetic resin molded products, there is a method of providing unevenness on the surface of the synthetic resin molded product (for example, see Utility Model Application Publication No. 52-105762),
A method of attaching an anti-slip material made of an elastic material such as rubber to the surface of a synthetic resin molded product by welding, gluing, fitting, etc. (see Japanese Patent Publication No. 1984-84872), etc. have been previously proposed.

Of the above-mentioned anti-slip methods,
As described in Publication No. 84872, a non-slip material having a flange-like part at both ends of a body formed to widen toward the end is fitted into an opening having a shape that matches the outer shape of the body, etc. of the non-slip material. The method of providing the anti-slip material on the molded product (see FIG. 7) is an excellent method in that it is easy to fit and replace the anti-slip material. However, this method has a problem in that the anti-slip material tends to wear out, and there has been a desire for a non-slip material that has further improved anti-slip effects, durability, and the like.

The present inventors conducted various studies to solve the problems of the anti-slip material described in the above-mentioned Japanese Utility Model Publication No. 53-84872, and found that conventionally the body of the anti-slip material as shown in FIG. Because the holes drilled in the synthetic resin molding matched almost perfectly, when the cargo or the fork of a forklift came into contact with the non-slip material, the non-slip material was compressed and rapidly worn away by the cargo and forks. I learned what I was doing. As a result of further investigation based on this knowledge, we found that in the conventional anti-slip mounting structure, the holes in the synthetic resin molded product were designed to have a specific structure, and there was a gap between the body of the anti-slip material and the holes.
The present invention was achieved based on the knowledge that the life of the anti-slip material can be extended and the fitting of the anti-slip material becomes easier by forming the anti-slip material.

That is, the gist of the present invention is to form a non-slip material made of an elastic material into a shape corresponding to the shape of the non-slip material, which is composed of a truncated conical body and flanges provided at both ends of the body. In the anti-slip material mounting structure that is fitted to a synthetic resin molded product having an opening of The height of the body is substantially equal to the height of the body, and at least part of the diameter is larger than the diameter of the body, so that when the anti-slip material is fitted into the opening of the synthetic resin molded product, the anti-slip material The anti-slip material mounting structure is characterized in that a gap is formed between the body and the opening.

An example of the anti-slip material mounting structure of the present invention will be described in more detail below with reference to the drawings.

Fig. 1 is a perspective view showing an example in which the non-slip material mounting structure of the present invention is applied to a pallet, Fig. 2 a and b are longitudinal sectional views showing an example of the non-slip material mounting structure of the present invention, and Fig. 3 a , b, c are vertical cross-sectional views showing an example of the openings, Fig. 4 a, b are side views showing an example of the non-slip material, and Fig. 5 a, b, c, d are the non-slip surfaces of the non-slip material. A plan view showing one example, FIGS. 6a and 6b are longitudinal sectional views showing another example of the non-slip material mounting structure of the present invention, and FIG. 7 is a vertical sectional view showing a conventional non-slip material mounting structure. .

In the figure, 1 is a synthetic resin molded product (pallet), 2 is a non-slip material, 3 is a body, 4, 4' are a flange, 5 is an opening, 6 is a gap, 7 is a hole, 8 is an unevenness, 9 each indicates a sheet.

The synthetic resin molded product 1 shown in FIG. 1 is an example of a pallet for transporting cargo. The following description will be made using an example in which the synthetic resin molded product 1 is a pallet, but the synthetic resin molded product 1 is not limited to a pallet.

Pallet 1 is polyethylene, polypropylene,
Styrene-propylene copolymer, polybutene-
1. Olefin resins such as ethylene-vinyl acetate copolymer, polystyrene, styrene resins such as acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer, polyvinyl chloride, polyvinylidene chloride, vinyl chloride-acetic acid Thermoplastic synthesis of vinyl chloride resins such as vinyl copolymers, amide resins such as nylon 6, nylon 6-6, nylon 6-10, nylon 11, and nylon 12, acrylic resins, polyether resins, polycarbonate resins, etc. It is molded from resin by injection molding, extrusion molding, etc., and in particular, it is made of olefin resin and is made of pallet component parts in the shape of dividing the pallet 1 by injection molding (usually a shape in which the pallet is divided into upper and lower halves). It is preferable to create one and integrate it by heat welding or the like.

Additives such as antioxidants, ultraviolet absorbers, heat stabilizers, antistatic agents, flame retardants, crosslinking agents, blowing agents, dyes, pigments, organic fillers, and inorganic fillers are added to the above-mentioned thermoplastic synthetic resins. They may be used in combination, and a molded product having a non-foamed layer on the surface, which is formed by adding and mixing a foaming agent during injection molding and performing low foaming injection molding at a low magnification of about 1.1 to 1.5 times, is particularly suitable.

Further, the shape of the pallet may be any shape as long as it can be used by inserting a fork, but it is usually square or rectangular.

The anti-slip material may be made of any elastic material as long as it has an anti-slip effect, but natural rubber, butadiene-styrene and other materials are preferred because they are easy to manufacture and can be easily fitted into through-holes. Polymers and synthetic rubbers such as butadiene-acrylonitrile copolymers are preferably used.

Appropriate position of pallet 1, that is, pallet 1
When preventing slipping between pallet 1 and cargo, the fork of the fork insertion hole of pallet 1 comes into contact with the surface of the pallet deck board, and when preventing slipping between pallet 1 and a fork such as a forklift. The anti-slip material 2 is fitted in the position.

This fitting is carried out by providing an opening in a shape corresponding to the non-slip material through the deck board at the position where the non-slip material 2 of the deck board is to be attached, and fitting the non-slip material 2 into the opening. It will be done.

As shown in FIG. 2, the anti-slip material 2 has a cross-sectional shape consisting of a truncated conical body 3 and flanges 4, 4' provided at both ends of the upper and lower surfaces of the body 3. is a circular structure, and among the flanges 4 and 4',
The diameter of the flange-shaped part 4' provided at the end with the smaller diameter is set to be the same as or slightly smaller than the maximum diameter of the body part 3.

The flanges 4, 4' are provided so that the surfaces that function as anti-slip protrude from the surface of the pallet or the inner surface of the fork insertion hole. For example, as shown in Figure 2a, one flanged part 4 protrudes from the surface of the pallet, and as shown in Figure 2b, one flanged part 4' is attached to the fork abutting part of the fork insertion hole. Of course, it is also possible to have a structure in which the respective flanges 4, 4' protrude from both the surface of the pallet and the inner surface of the fork insertion hole. The direction in which the anti-slip material 2 is fitted to the pallet 1 may be from the outer surface of the pallet or from the fork insertion hole side of the pallet, and is determined as appropriate depending on the application.

Flange-shaped parts 4, 4' protruding from the surface of the pallet, etc.
It is preferable that the sides of the fork have an appropriately slanted surface so that the top does not curl up even if the tip of the fork or the corner of the baggage collides with it, and the top of the fork should have as much contact area as possible with the fork. It is preferable to keep it on a horizontal surface.

It is sufficient for the flanges 4, 4' to protrude approximately 10 mm or less from the surface of the pallet.

Such a non-slip material 2 is fitted into an opening 5 formed in a deck board or the like of the pallet 1 and having a shape corresponding to the shape of the non-slip material 2.

The main feature of the present invention is that the opening 5 has a specific structure and a specific gap 6 is formed as described below.

That is, the height of the part of the opening 5 corresponding to the body 3 of the anti-slip material (○) is made substantially equal to the height of the body, and the height of the part of the opening 5 corresponding to the body 3 of the anti-slip material (○) is made substantially equal to the height of the body of the anti-slip material. The part corresponding to the side has a cylindrical shape with a diameter that is the same as or slightly larger than the maximum diameter of the body of the anti-slip material, and the part corresponding to the smaller diameter side of the body of the anti-slip material is the diameter of its bottom surface. is a truncated cone with a diameter that is the same as or slightly larger than the minimum diameter of the body of the anti-slip material, and the parts corresponding to the brim-shaped parts 4 and 4' provided on the upper and lower surfaces of the anti-slip material are the brim. It has a cylindrical shape with approximately the same diameter as the shaped part. As a result, when the anti-slip material is fitted into the opening of the synthetic resin molded product, the flanges 4, 4' on the upper and lower surfaces of the anti-slip material come into close contact with the opening, but at least the large diameter side of the body Between the opening and the body of the anti-slip material, there is a gap of 6.
begins to form.

During this time, the function of 〓6 is as follows. For example, when the anti-slip material 2 comes into contact with a cargo at the top and a fork such as a forklift at the bottom, the non-slip material 2 is compressed as it is sandwiched between the cargo and the fork. If the shapes of the non-slip material 2 and the openings 5 match too closely, the compressed non-slip material 2 will have no place to escape and will be rapidly worn away by being rubbed by luggage or forks, which will shorten the life of the non-slip material. becomes very short. However, according to the mounting structure of the non-slip material 2 of the present invention, in the above case, the non-slip material 2
The gap formed between and the opening 5 is the anti-slip material 2
Since it becomes an escape area for bending and moving, the anti-slip material 2 will not be unduly worn out, and the life of the anti-slip material 2 will be very long.

Note that if the space between the non-slip material 2 and the opening 5 is too large, the non-slip material 2 will easily come off, so the location where the space is provided corresponds to the body 3 of the non-slip material 2. Among the openings in the portion where the anti-slip material 2 is formed, the holes are provided around the larger diameter portion of the truncated conical body portion 3 of the anti-slip material 2. Therefore, among the openings provided in the pallet 1, the part corresponding to the larger diameter side of the body 3 of the anti-slip material 2 is made to have a diameter that is the same as or slightly larger than the maximum diameter of the body 3 of the anti-slip material 2. The part corresponding to the small diameter side of the body of the anti-slip material 2 has a truncated conical shape with a bottom diameter that is the same as or slightly larger than the minimum diameter of the body 3 of the anti-slip material 2. do.

To explain in more detail, it is preferable that the opening in the portion of the non-slip material 2 corresponding to the small diameter portion has a truncated conical shape that matches the shape of the body of the non-slip material. The proportion of the truncated conical portion that matches the shape is preferably 0.1 to 0.5 times the axial height of the body of the anti-slip material. An example of the structure of such an opening 5 is shown in FIG.

According to the mounting structure of the non-slip material 2 and such an opening 5, the gap 6 is formed so as to surround the large-diameter side of the body 3 of the non-slip material 2. If the gap 6 is too large, use anti-slip material 2
Since it becomes easy to separate, use the anti-slip material 2 in the gap 6.
The height parallel to the axial direction (height indicated by h in Fig. 2) is 0.5 of the axial height of the body 3 of the anti-slip material 2 (height indicated by H in Fig. 2). It is desirable that it be ~0.9 times.

Also, for the same reason, the non-slip material 2 between
The thickness in the direction perpendicular to the axial direction (thickness indicated by t in FIG. 2) is preferably 0.5 to 5 mm.

Furthermore, by having the above-described structure, when the non-slip material 2 is fitted into the opening 5, the non-slip material 2
By pushing the small diameter flange 4' of the anti-slip material 2 through the cylindrical opening from the large diameter side of the opening 5, the small diameter flange 4' of the anti-slip material 2 can be pushed in without resistance to a certain extent, and the flange The shaped part 4' is deformed and pushed into only a short distance in a part of the opening 5, but since the opening in this part has a truncated conical shape, the pushing force is increased somewhat. This also has the effect of allowing the anti-slip material to be slid in and fitted easily.

Furthermore, the relationship between the small diameter part of the body part 3 and the diameter of the flanged part 4' provided on the small diameter part is such that the minimum diameter of the body part and the diameter of the flanged part 4' provided in the small diameter part are such that it is easy to fit together and difficult to separate. It is desirable that the ratio to the diameter of the portion 4' is in the range of 1:1.5 to 1.1, preferably 1:1.3 to 1.15.

The one shown in FIGS. 4a and 4b shows another example of the anti-slip material 2, in which a hole is bored in the center of the anti-slip material 2 from the lower end to an appropriate position {FIG. 4 a}, A hole is made in the center of the anti-slip material 2 that passes through it vertically (Fig. 4b). With such a structure, fitting into the opening 5 becomes easy. However, if the hole is too large, use anti-slip material 2.
Since it becomes easy to separate, the size of the hole is determined by the anti-slip material 2.
It is necessary to decide based on the material, required fitting strength, etc.

In FIGS. 5a to 5d, the flanged portion 4 of the anti-slip material 2,
4' shows an example of the structure of the anti-slip surface, and the anti-slip effect is improved by providing unevenness 8 as shown in FIGS. 5a to 5d.

6a and 6b show another example of the mounting structure, in which the sheet 9 is positioned in the opening 5 in advance,
By fitting the anti-slip material 2 thereto, a structure is obtained in which the brim-shaped portion 4' of the anti-slip material 2 is covered with the sheet 9.

In this case, if a sheet 9 that has an anti-slip effect is used, the anti-slip effect will be achieved.On the other hand, if a sheet 9 that is slippery is used, the anti-slip material 2 can be fitted more easily. In this case, the sheet 9 may be removed later.

The anti-slip material mounting structure of the present invention has the above-mentioned structure, and is similar to the conventional example shown in Fig. 7.
Compared to the non-slip material mounting structure of Publication No. 53-84872, the durability of the non-slip material is very excellent due to the provision of the grooves 6 in a specific shape, and the fitting is very easy.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an example in which the non-slip material mounting structure of the present invention is applied to a pallet, Fig. 2 a and b are longitudinal sectional views showing an example of the non-slip material mounting structure of the present invention, and Fig. 3 a , b, c are vertical cross-sectional views showing an example of the openings, Fig. 4 a, b are side views showing an example of the non-slip material, and Fig. 5 a, b, c, d are the non-slip surfaces of the non-slip material. A plan view showing one example, FIGS. 6a and 6b are longitudinal sectional views showing another example of the non-slip material mounting structure of the present invention, and FIG. 7 is a vertical sectional view showing a conventional non-slip material mounting structure. . In the figure, 1 is a synthetic resin molded product (pallet), 2 is a non-slip material, 3 is a body, 4 and 4' are flanges, 5 is an opening, and 6 is a gap.

Claims (1)

[Scope of Claims] 1. A non-slip material made of an elastic material having a circular cross-sectional shape and consisting of a truncated conical body and flanges provided on the upper and lower surfaces of the body. In a non-slip material mounting structure that is fitted to a synthetic resin molded product having an opening of a shape corresponding to the shape of the non-slip material, a flange-shaped part of the non-slip material is provided on the smaller diameter side of the body. The diameter of the brim is the same as or slightly smaller than the maximum diameter of the body, and one of the openings perpendicular to the surface of the synthetic resin molded product corresponds to the body of the anti-slip material. The height of the part is substantially equal to the height of the body, and the part corresponding to the larger diameter side of the body of the anti-slip material is equal to or slightly larger than the maximum diameter of the body of the anti-slip material. It has a cylindrical shape with a large diameter, and the part corresponding to the small diameter side of the body of the anti-slip material is a truncated cone whose bottom diameter is the same as or slightly larger than the minimum diameter of the body of the anti-slip material. and (○) the parts corresponding to the flanges provided on the top and bottom surfaces of the anti-slip material are made into cylindrical shapes with approximately the same diameter as the flanges, thereby making the anti-slip material suitable for opening synthetic resin molded products. When fitted into the hole, a space surrounding the body of the anti-slip material is formed between at least the large diameter side of the body of the anti-slip material and the opening.
What is claimed is: 1. A non-slip material mounting structure characterized in that the anti-slip material has a structure in which at least one brim portion of the non-slip material protrudes from the surface of the synthetic resin molded product. 2. The gap is formed surrounding the body of the non-slip material, and the height of the gap in the axial direction and parallel to the non-slip material is equal to the height of the body of the non-slip material in the axial direction.
The anti-slip material mounting structure according to claim 1, wherein the anti-slip material mounting structure is 0.5 to 0.9 times. 3. The gap is formed on the large diameter side of the body of the non-slip material, and the opening corresponding to the small diameter side of the body of the non-slip material is at the height of the body of the non-slip material in the axial direction. of
The non-slip material mounting structure according to claim 2, wherein the non-slip material mounting structure has a truncated conical shape that matches the shape of the body of the non-slip material over a length of 0.1 to 0.5 times. 4 Thickness between the axial direction and the right angle direction of the anti-slip material is
The anti-slip material mounting structure according to any one of claims 1 to 3, characterized in that the thickness is 0.5 to 5 mm.