JPH0565615U - Tread member of tire anti-skid device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent material destruction by spike pins of the tread member of the tire anti-skid device. [Structure] Rubber coating layer 1 on tread side of tread member 10
4 through the shank 17b of the spike pin 17 to cover the surface of the flange portion 17a on the grounding surface side with a predetermined wider area than the outer circumference, from a fiber material and a synthetic resin having a higher modulus than the rubber coating layer 14. The stabilizers 18 are arranged discontinuously. Even if the modulus of the rubber coating layer 14 decreases due to heat generated during running on a dry road surface, the stabilizer 18 maintains a higher modulus than that of the rubber coating layer 14, and the flange portion 17 due to the inclination of the spike pin 17 is maintained.
The fluctuation of a is suppressed, and the reinforcing layer 13 and the rubber coating layer 15 on the tire tread surface side are not damaged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tread member of a tire anti-slip device that prevents material destruction due to spike pins.

[0002]

[Prior Art]

 Conventionally, a ladder-type tread member known as a non-metal tire anti-slip device is a molded body in which both sides of a reinforcing layer are covered with rubber layers, and the rubber layer on the ground contact side has spikes. The pin is buried.

[0003]

[Problems to be solved by the device]

 When a conventional tread member is mounted on a heavy-duty tire such as a truck or bus and travels on a dry road surface, the modulus of the rubber layer of the tread member decreases due to heat generation. The reinforcement and rubber layer near the spike pin flange on the back side of the member (tire tread surface side) will be damaged by the flange part, resulting in material destruction of the tread member and eventually spike pin on the back side of the tread member. This is a major cause of the decrease in the durable life of the tread member.

An object of the present invention is to provide a tread member for a tire anti-slip device, which solves such a problem and suppresses the swinging of the flange portion due to the inclination of the spike pin.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, this invention has tread hooks at both ends in the longitudinal direction, and both sides of the reinforcing layer that is folded back around both tread hooks are made of elastic material such as rubber or synthetic resin. In a tread member of a tire anti-skid device that is covered and has a spike pin embedded in a coating layer on the ground contact surface side, a flange that penetrates the shank portion of the spike pin in the coating layer on the ground contact surface side of the tread member. A stabilizer made of a fibrous material is arranged discontinuously so as to cover the surface of the part on the grounding surface side with a predetermined larger area than the outer circumference.

[0006]

[Action]

 In the tread member of this invention, even if the tread member heats up and the modulus of the material of the coating layer decreases, the stabilizer maintains a higher modulus than the coating layer for a long time. The shaking is suppressed and the reinforcing layer and coating layer near this flange are not damaged.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1 (half side view) and FIG. 2 (expanded plan view), the tread member 10 of the present invention has a tread portion 11 at the central portion in the longitudinal direction, an inside portion 12 at one end portion in the longitudinal direction, and the like. The end portion is an outside portion (not shown) having the same shape as the inside portion 12, and the inside portion 12 and the outside portion are slender long mountain shapes bent in the same direction from both ends of the tread portion 11. is there.

As shown in FIG. 3 (partially sectional view), the tread member 10 has a covering layer 14 made of an elastic material such as rubber or synthetic resin on both sides of a reinforcing layer 13 such as a carcass material of a pneumatic tire. 15 are integrally bonded and molded, and a tread hook 16 in which the end of the reinforcing layer 13 is folded and wound is attached to the inside portion 12 and the outside portion, and the front side of the tread portion 11 (the ground contact surface). The spike pin 17 is embedded in the coating layer 14 on the side.

In the coating layer 14 on the ground contact surface side of the tread member 10, a stabilizer 18 covering the surface of the flange portion 17a on the ground contact surface side of the flange portion 17a of the spike pin 17 penetrates the shank portion 17b. It is arranged. The stabilizer 18 is made of a material having a higher modulus than the material of the coating layers 14 and 15, and is discontinuously arranged by cutting the spike pin 17 wider than the outer periphery of the flange portion 17a by a predetermined area. As the material of the stabilizer 18, for example, a interwoven carcass material used in a tire cord is suitable, but in addition to this, a plain weave cloth, another fiber material, or a synthetic resin plate may be used. As for the size of the stabilizer 18, it is preferable to use one having a diameter which is 5 to 10 mm larger than the outer circumference of the flange portion 17a of the spike pin 17.

A plurality of the above tread members 10 are arranged at a predetermined interval, and the tread hooks 16 of the inside portion 12 and the outside portion are caulked and fixed to the side ropes 20 to fix the tires of a ladder type. A non-slip device is constructed. When the tire anti-skid device configured as described above is attached to a heavy-duty tire such as a truck or a bus and travels on a dry road surface, heat generated by friction with the road surface causes the tread portion 11 of the tread member 10 to be heated. Although the modulus of the coating layer 14 on the grounding surface side is lowered, the stabilizer 18 arranged in the coating layer 14 has a higher modulus than the coating layer 14 and the flange portion 17a of the spike pin 17 is provided. Since it covers locally, the rocking of the flange portion 17a due to the inclination of the spike pin 17 is surely suppressed. Therefore, the flange portion 17a of the spike pin 17 does not damage the reinforcing layer 13 disposed in the vicinity thereof, and further does not damage the covering layer 15 on the tire tread surface side. The situation where the tread member 10 slips out toward the tire tread surface side and falls off does not occur.

[0011]

[Effect of the device]

 As described above, according to the present invention, even if the coating layer of the tread member generates heat when the vehicle is running and the modulus is lowered, the surface of the spike pin on the ground contact side has a predetermined area. Since the stabilizer that locally covers the surface maintains a higher modulus than the covering layer, the fluctuation of the flange part due to the inclination of the spike pin is suppressed, and the reinforcing layer and the covering layer on the tire tread surface side are damaged and the material is destroyed. Since it is possible to prevent the spike pins from falling off to the tire tread surface side, and the durability life of the tread member is improved, it is especially suitable for tire anti-skid devices used in heavy-duty tires such as trucks and buses. The member is obtained.

[Brief description of drawings]

FIG. 1 is a side view showing a half portion of the outer shape of a tread member of the present invention.

FIG. 2 is a plan view showing the tread member of FIG. 1 in a developed state.

FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 10 Tread Member 13 Reinforcing Layer 14 Covering Layer on Ground Side 15 Covering Layer on Tire Tread Side 16 Tread Hook 17 Spike Pin 17a Spike Pin Flange 17b Spike Pin Shank 18 Stabilizer

Claims (1)

[Scope of utility model registration request] 1. A tread hook is provided at both ends in the longitudinal direction, and both sides of a reinforcing layer, which is folded back around both tread hooks, are covered with an elastic material such as rubber or synthetic resin, and In a tread member of a tire anti-skid device in which a spike pin is embedded in a coating layer, in a coating layer on the grounding surface side of the tread member, a surface of the flange portion on the grounding surface side that penetrates the shank portion of the spike pin. A tread member for a tire anti-skid device, characterized in that stabilizers made of a fibrous material are arranged in a discontinuous manner to cover the above with a predetermined larger area than the outer circumference.