JPH0351601B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a non-metallic tire skid device equipped with spike pins and an improvement in a method for fixing the spike pins.

(Prior art) When driving on snowy or icy roads, non-metallic tire skids made of substantially rubber, such as those formed with a ladder-shaped or tortoise-shell mesh-like part, or those formed in a chain shape, are used. However, recently it has been attracting attention as an alternative to metal chains.

This type of anti-slip device includes a mesh type device having a rectangular mesh as shown in Japanese Patent Publication No. 18648/1983, and in this device, a net serving as a reinforcing material is covered with rubber. Spike pins are provided at the intersections of the meshes to prevent slippage in the axial and circumferential directions of the tire.

As a method for fixing the spike pins to the non-metallic tire anti-slip device, there are two methods: applying a strong adhesive in addition to the tips of the spike pins and embedding and fixing the spike pins into the anti-slip device body, and a special spike pin inside the main body. After implantation, methods are known in which both the upper and lower ends are caulked and fixed, and methods in which the material of the non-metallic tire skid stopper itself is made of a material with high rigidity, such as polyurethane.

(Problems to be Solved by the Invention) The method using the adhesive has manufacturing difficulties, the upper and lower crimping method requires special pins and is expensive, and the material of the main body has to be made of a highly rigid material. If you use a slipper, the riding comfort will be poor, and the frictional force with the ice surface will be small, which will impair the functionality of the anti-skid device. Furthermore, in the above-mentioned conventional device, the spike pin fixed to the main body may fall off due to long-term use, impairing the functionality of the anti-slip device. This is because the main body is made of a soft elastic material such as rubber.

(Means for Solving the Problems) The present invention was made in order to solve the above-mentioned conventional drawbacks, and is aimed at improving the function of the anti-slip device, improving productivity, streamlining, etc. As a means to achieve this purpose, in the spike pin attachment part provided on the rib of the main body of a non-metallic tire skid device made of substantially rubber, etc., which is used by being wrapped around a vehicle tire, A spike pin consisting of at least one flange provided on the body and a tip protruding in the axial direction of the body is embedded in the main body, and has a highly rigid cylindrical expansion/contraction that tightens the body of the spike pin from the outer periphery. In addition to adopting a configuration in which a tightening reinforcing body is embedded, a spike pin consisting of a body, at least one flange provided on the body, and a tip protruding in the axial direction of the body is used for vehicle use. When driving and fixing to the rib of the main body of a non-metallic tire skid device made of real rubber, etc. that is used around the tire,
A hole approximately the same shape as the trunk is provided in the main body, and a highly rigid cylindrical expansion/contraction tightening reinforcement body is embedded in advance concentrically with the hole, and the spike pin is driven into the hole to expand/contract. A method was adopted in which the spike pin is integrally fixed within the main body by expanding the tightening reinforcement body once and then contracting it so that the inner periphery of the expansion/contraction tightening reinforcement body bites into the outer periphery of the trunk of the spike pin and tightens it. .

(Function) As shown in FIG. 2, when the driver wears the skid device of the present invention and runs on an icy road, the spike pins 11 come into contact with the road surface to prevent slipping. spike pin 1
1 is embedded by driving the body 20 into the rib 6 of the non-slip tool 1, but since the outer periphery of the body 20 is firmly tightened by the highly rigid expansion/contraction tightening reinforcing body 18, it does not fall off. do not. Moreover, spike pin 11
Despite this displacement movement within the ribs 6 of the reinforcement body 18
This tightening reinforcing body 18 prevents damage to the rib 6 and reinforces the spike pin attachment portion structure.

(Example) FIGS. 1 and 2 show an example of the non-metallic tire skid device according to the present invention. FIG. 1 is a plan view showing a part of the skid prevention device 1, and FIG. FIG. 2 is a partial side view showing a state in which the anti-slip device 1 is attached to a tire 2. FIG.

The anti-slip device 1 includes a main body 3 located on the tread portion of the tire 2, and both side edge portions 4 located on the shoulder and sidewall portions of the tire 2, and the core material (not shown) is made of an elastic substance. It is covered with a covering material 5 made of rubber or the like. The core material is made of synthetic fibers such as polyester, nylon, or rayon, or natural fibers in a mesh shape, and the covering material 5 covering this core material is made of rubber, synthetic resin, or other elastic non-metallic material. However, if necessary, glass fibers, metal fibers, etc. may be mixed therein. Therefore, the anti-slip device 1 of the above embodiment is a belt-shaped body in which ribs 6 are arranged in a mesh pattern and the length is made to go around the tire 2, and both ends in the longitudinal direction are connected to the connecting device 7.
are connected. Also, there are many connectors 8 at both ends in the width direction.
. . . side ropes 9, 9 are provided, and both ends of the side ropes 9, 9 are connected by connectors 10, 10.

A spike pin 11 is embedded and fixed in the rib 6 of the main body 3 of the anti-slip tool 1.

It should be noted that the non-metallic tire skid device according to the present invention is not limited to the structure shown in FIGS. 1 and 2, and may be of a so-called chain type.

3 to 8 are drawings of a first embodiment showing the structure of the spike pin attachment part of the present invention and its fixing method, which will be explained below.

FIGS. 3 and 4 are sectional views of the main part of the molding die for the main body rib 6 including the spike pin mounting portion of the anti-skid tool, and 12 represents the male mold and 13 represents the female mold. male type 1
A pin portion 14 having the same diameter as a body portion 20 of a spike pin 11, which will be described later, is erected on 2, and a stepped portion 15 having a slightly larger diameter than the pin portion 14 is provided at the base of the pin portion 14. On the other hand, the female die 13 is provided with a cavity 16 for forming the rib 6 and a recess 17 into which the pin portion 14 of the male die 12 is fitted. This male type 12 and female type 1
3, first, a highly rigid cylindrical expansion/contraction tightening reinforcing body 18 is inserted into the pin portion 14 of the male mold 12 as shown in the figure. As shown in FIG. 18, this tightening reinforcing body 18 is a cylindrical body made of, for example, spring steel and has a C-shaped cross section, and its inner diameter
D' is smaller than the diameter D of the pin portion 14.
Therefore, the tightening reinforcing body 18 is inserted into the pin part 14 with its inner diameter expanded, and its lower end is inserted into the stepped part 1.
It is attached to 5. On the other hand, the female mold cavity 16 is filled with a core material (not shown) and an appropriate amount of unvulcanized rubber 18', and then the molds 12 and 13 are integrated as shown in FIG. Heat and vulcanize. Figures 5 and 6 show both types 12 and 13.
2 is a cross-sectional view of the main body rib 6 including the spike pin attachment portion taken out from the
4, it contracts to the old inner diameter D', and its inner periphery is exposed in the centripetal direction as a diameter smaller than the diameter D of the formed hole 19.

It should be noted that the entire non-slip device 1 including the above-mentioned spike pin attachment portion may be formed by a method other than those shown in FIGS. 3 and 4, and is not limited to this method.

FIG. 7 shows how the spike pin 11 is attached to the spike pin attaching portion of the rib 6. The spike pin 11 in this embodiment includes a body 20 and a pair of flanges 2 at both ends of the body 20.
1 and 22, a chip 23 made of wear-resistant metal projects from the center of one flange 11, and the other flange 22 is formed with a dish-shaped guide surface 22'. The diameter of the body portion 20 is approximately the same as that of the hole 19 of the rib 6, and the height thereof is slightly larger than the height of the tightening reinforcing body 18. When the spike pin 11 formed in this way is driven into the hole 19 from the flange 22 side as shown in the figure, the guide surface 22' first expands the hole 19, and further expands the tightening reinforcement 18 in the centrifugal direction and passes through. . After this, the tightening reinforcing body 18 immediately recovers its elasticity and contracts, tightening the outer periphery of the trunk 20 with its inner periphery, and as shown in FIG. are integrally implanted and fixed.

9 to 11 show a second embodiment of the present invention, which differs from the first embodiment in that the hole 19 provided in the rib 6 was a through hole in the previous embodiment. In contrast, the point is the blind hole 19',
The same reference numerals indicate the same parts.

12 to 17 show third to eighth embodiments of the present invention, and the difference from the first and second embodiments is that each of these has a single flange on the spike pin 11. It is a point to have.

That is, the spike pin 11A shown in FIGS. 12 and 13 has its flange 21A on the tip 23 side, and the body 20A has a tapered shape that widens toward the end, and its end surface is a dish-shaped guide surface 20A'. On the other hand, the tightening reinforcing pair 18A is also
It is said to have the same shape as A.

The spike pin 11B shown in FIGS. 14 and 15 has a flange 22B on the side opposite to the pin 23, and the body 20B is tapered upward, and the flange 21B has a dish-shaped guide surface 22.
B' is provided.

The spike pin 11C shown in FIGS. 16 and 17 has a flange 24 provided at the center of a straight bar body 20C, and has a dish-shaped guide surface 24' on the opposite side of the flange 24 from the pin 23. , and reinforcement body 1
8C uses two, upper and lower.

In the above embodiment of the present invention, the tightening reinforcement body 18
The one shown in Fig. 18 was used, but the one 18A in which notches were made in the upper half of the cylinder to form a plurality of tongues as shown in Fig. 19 may also be used, or the one shown in Fig. 20 The material 18B may be made of a material with high rigidity, such as hard rubber, thermoplastic elastomer, FRP, or other materials, and the point is that when the spike pin 11 is driven in, it expands and then contracts, causing the body 20 of the pin 11 to extend from the outer periphery. It's fine as long as it's tight.

Further, in each of the above embodiments, the spike pin 11 is driven into the rib 6 including the spike pin mounting portion, but for example, the spike pin 11 is driven into the rib 6 including the spike pin attachment portion.
Alternatively, the pin attachment portion of the present invention may be separately provided outside the intersection of the pin attachment portion of the present invention, and the pin attachment portion may be vulcanized and bonded during vulcanization to be integrated. In addition, although Fig. 3 and Fig. 4 show a case in which vulcanization is performed directly using a mold, the mold and the vulcanization mold may be separate, or the vulcanization mold may not be used. The means for forming the non-slip device is not limited to the embodiments.

(Effects of the Invention) The present invention provides a spike pin attachment portion provided on a rib of a main body of a non-metallic tire skid device made of substantially rubber, etc., which is used by surrounding a vehicle tire. A spike pin consisting of at least one flange provided and a tip protruding in the axial direction of the body is embedded in the main body, and a highly rigid cylindrical expansion/contraction tightening device tightens the body of the spike pin from the outer periphery. Since the reinforcing body is embedded, there is no accident of it falling off even after long-term use, and the tightening reinforcing body tightens the spike pin and reinforces the spike pin attachment part of the anti-skid device, and the reinforcing body By intervening, it was possible to reduce the wear around the hole between the material of which the skid is formed, which is essentially made of rubber or the like.

Further, according to the method of fixing the spike pin of the present invention, the spike pin is fixed securely and firmly, improving the function of the anti-slip device, and since the attachment is simply by driving the fixing means, productivity is extremely high.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a part of the non-metallic tire skid device according to the present invention, FIG. 2 is a partial side view showing the state in which the skid device is mounted on a tire, and FIGS. 3 to 8 1 is a first embodiment drawing showing the structure of the spike pin attachment part of the present invention and its fixing method, and FIGS. 3 and 4 show the molded metal of the main body rib including the spike pin attachment part of the anti-slip device. A cross-sectional view of the main part of the mold, FIGS. 5 and 6 show a longitudinal cross-sectional view and a cross-sectional view of the rib part formed by the mold, and FIG. 7 shows the main part of the mold before driving the spike pin.
FIG. 8 shows a sectional view after the same implantation. Figure 9~
FIG. 11 is a sectional view showing a second embodiment of the present invention, FIGS. 12 to 17 are sectional views showing third to eighth embodiments of the present invention, and FIG. 19 and 20 are perspective views of other embodiments. 1...Slip device, 2...Tire, 6...Rib, 1
1... Spike pin, 18... Expandable tightening reinforcement body,
20, 20A, 20B, 20C...body, 21,
22...flange, 23...chip.

Claims (1)

[Scope of Claims] 1. In the spike pin mounting portion provided on the rib of the main body of a non-metallic tire skid device made of substantially rubber, etc., which is used around a vehicle tire, A spike pin consisting of at least one flange and a tip protruding in the axial direction of the body is embedded in the main body, and a highly rigid cylindrical expansion/contraction tightening reinforcement body tightens the body of the spike pin from the outer periphery. A non-metallic tire anti-slip device equipped with a spike pin embedded therein. 2. A non-metallic tire made of substantially rubber, etc., in which a spike pin consisting of a trunk, at least one flange provided on the trunk, and a tip protruding in the axial direction of the trunk is used by being wrapped around a vehicle tire. When driving and fixing to the ribs of the main body of the non-slip device, a hole is provided in the main body with approximately the same shape as the body, and a highly rigid cylindrical expansion and contraction reinforcing body is embedded in advance concentrically with the hole. Then, after driving the spike pin into the hole and expanding the expansion/contraction tightening reinforcement body,
A spike pin of a non-metallic tire skid device, characterized in that the spike pin is integrally fixed within the main body by contracting and tightening the inner periphery of the expansion/contraction tightening reinforcing body to the outer periphery of the body of the spike pin. Fixing method.