JPH06171327A - Anti-skid tool for tire - Google Patents

Abstract

PURPOSE:To prevent the release of a tread belt part to the outside of a tire and secure anti-skid function. CONSTITUTION:An anti-skid member 5 is formed of an annular tread belt part 5a mounted to the outer peripheral part of a tire, and numerous side belt parts 5B. The base end 5c of each side belt part 5B of the anti-skid member 5 is rigidly fixed to a fitting member fitted to the outer side face of the wheel of an automobile by a wheel nut to form a cantilever type anti-skid means for a tire. In this case, the radius-of-curvature R of the connected curved part 7 of the side belt part 5B is made smaller than the radius-of-curvature of the round shoulder part of the tire, and a part 8 excluding the connected curved part 7 is formed into flat shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cantilever type anti-skid device for a tire which is mounted on a tire of an automobile.

[0002]

2. Description of the Related Art As this type of anti-slip device, those exemplified in FIGS. 5 to 9 are known. This slipper 1
Is a ring-shaped mounting member 4 which is removably mounted on the outer surface of an automobile wheel 2 concentrically with the wheel 2 by a fixture 3.
And an anti-slip member 5 having an annular tread belt portion 5A mounted on the outer peripheral portion of the tire T and a number of side belt portions 5B extending from one end of the belt 5A toward the center of the wheel 2. The base end 5C of the side belt portion 5B is fixed to the outer peripheral portion of the mounting member 4.

The tread belt portion 5A is formed in a ladder shape, and spike pins 6 are embedded in appropriate places. The mounting member 4 includes a fixed disk 4A made of metal and the disk 4A.
It is composed of a belt mounting ring 4B made of synthetic resin that is rotatably mounted on the outer circumference of the wheel, and the fixed disk 4A is mounted on the wheel 2 by a fixing tool 3 such as a wheel nut. Part base end 5C is fixed.

Further, the anti-slip member 5 is integrally formed of an elastic material such as rubber, and as shown in FIGS.
After being molded by the expanded flat mold, the tread belt portion 5A is formed into an annular shape and the side belt portion 5B is curved and formed radially during vulcanization as shown in FIGS. 6 and 9. The width W and the thickness t of the side belt portion 5B are uniform.

[0005]

By the way, a slip stopper
In order to easily attach / detach the tire 1 to / from the tire T, it is desirable to reduce the rigidity of the side belt portion 5B. However, from the viewpoint of performance on snow and ice, when the rigidity of the side belt portion 5B is small, the side belt portion 5B swells outward during traveling, so the tread belt portion 5A moves outward from the road surface and the tread surface of the tire T. There is a problem that it escapes and the performance on snow and ice is significantly reduced.

Further, if the rigidity of the side belt portion 5B is increased, the above problem can be solved, but there is a problem that it becomes difficult to attach / detach the slip stopper 1 to / from the tire T. The present invention has been made in view of the above situation, and an object thereof is that a tread belt portion does not escape from between a tire and a road surface, and a slip stopper for a tire that is easily attached to and detached from a tire. It is in providing the ingredients.

[0007]

In order to achieve the above object, the present invention takes the following technical means. That is, the present invention relates to a mounting member that is concentrically and removably mounted on the outer surface of a wheel of an automobile, an annular tread belt portion that is mounted on the outer peripheral portion of the tire, and a wheel center from one end of the belt portion. A non-slip member having a large number of side belt portions extending in the direction, and a wheel center side base end of the side belt portion fixed to the mounting member, wherein the side belt portion is opposed to the tire. It is characterized in that the radius of curvature of the connection curved portion of the side surface with the tread belt portion is made smaller than the radius of curvature of the round shoulder portion from the shoulder portion to the sidewall portion of the tire.

Further, the present invention is characterized in that the base portion of the side belt portion excluding the connecting curved portion has a flat shape. Furthermore, the present invention is characterized in that the width and / or the thickness of the connecting curved portion of the side belt portion is made larger than the width and / or the thickness of the base portion of the side belt portion.

[0009]

According to the present invention, even if the rigidity of the side belt portion is set low enough to be easily attached to and detached from the tire, the curvature of the connecting curved portion of the side belt portion is equal to the curvature of the round shoulder portion of the tire. Therefore, when the tread belt portion tries to escape from the tire tread surface to the outside, the curved portion of the side belt portion acts to move the tread belt portion inward, so that the tread belt portion moves outward. It does not escape and exhibits a non-slip function.

Further, by making the width and thickness of the connecting curved portion of the side belt portion larger than those of the other portions, the lateral rigidity of the side belt portion can be set low, and the work of attaching and detaching to the tire becomes easy, Due to the rigidity and curvature of the curved portion, an inward force acts on the tread belt portion, and the tread belt portion does not escape to the outside.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a cross-sectional view of an essential portion of the first embodiment of the present invention, that is, an anti-slip member. The basic structure of the anti-skid tool 1 is the same as that shown in FIGS. Omitted,
The description will be made mainly on the characteristic part of the present invention with reference to FIGS. 5 to 9 and using the same symbols and the same names.

The slip stopper 1 comprises a mounting member 4 and a slip member 5, and the slip member 5 is made of an elastic material such as rubber or synthetic resin (for example, urethane rubber) and is a ladder-shaped and annular tread belt. The portion 5A and a large number of radial side belt portions 5B are integrally formed, and the shape after completion of vulcanization is shown in FIG. The connecting portion of the side belt portion 5B with the tread belt portion 5A is curved, and the inner side curvature radius R of the connecting curved portion 7 after vulcanization is equal to the round shoulder portion RS of the tire T shown in FIG. Radius of curvature from the shoulder to the side wall)
It is smaller than RO. And the side belt portion
A portion 8 of 5B excluding the connecting curved portion 7 has a flat shape, that is, a straight strip shape.

Therefore, according to the first embodiment, even if the rigidity of the side belt portion 5B is set low enough to easily attach and detach to and from the tire, the radius of curvature R of the connecting curved portion 7 is set. By this, a force that pushes the tread belt portion 5A inward is generated, and since the force that the tread belt portion 5A tries to escape from the tread portion to the outside of the tire while driving is contained, the tread belt portion 5A
Can be prevented from escaping, and the anti-skid function can be fully exerted.

3 and 4 show the essential parts of the second embodiment of the present invention. The difference from the first embodiment is that the width W1 and the thickness of the connecting curved portion 7 of the side belt portion 5B of the anti-slip member 5 are different. T1
Is larger than the width W2 and the thickness t2 of the other portion 8, whereby the lateral rigidity of the side belt portion 5B can be set low. Therefore, according to the second embodiment, it is possible to prevent the tread belt portion 5A from escaping to the outside of the tire due to the inward force exerted by the connecting curved portion 7, and the curvature of the curved portion 7 can be prevented. The anti-slip function can be secured by the synergistic effect with the setting of the radius R.

The present invention is not limited to the above-mentioned embodiment. For example, in the second embodiment, either the width W1 or the thickness t1 of the connecting curved portion 7 is changed to the other portion.
It can be greater than the width W2 or the thickness t2 of 8.

[0016]

As described above, the present invention provides a mounting member which is concentrically and detachably mounted on the outer surface of a wheel of an automobile, an annular tread belt portion which is mounted on the outer peripheral portion of the tire, and A non-slip member for a tire, comprising a non-slip member having a number of side belt portions extending from one end of the belt portion toward a wheel center, and a wheel center side proximal end of the side belt portion fixed to the mounting member. The curvature radius of the connecting curved portion of the side belt portion on the side of the tire facing the tread belt portion is smaller than the radius of curvature of the round shoulder portion from the shoulder portion to the sidewall portion of the tire. Therefore, the tread belt part does not escape from between the tire and the road surface to the outside, and it can sufficiently demonstrate the performance on snow and ice, that is, the anti-slip function, and The attachment and detachment of the tire can be easily and perform efficiently, it is possible to improve the durability by preventing damage to the slip instruments.

Further, the present invention is characterized in that the width and / or the thickness of the connecting curved portion of the side belt portion is made larger than the width and / or the thickness of the base portion of the side belt portion. As a result, the lateral rigidity of the side belt portion can be set to be low, the tire can be easily attached to and detached from the tire, and the tread belt portion can be reliably prevented from escaping to the outside of the tire, and the performance on snow and ice can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an essential part of a first embodiment of the present invention, particularly, an antiskid member.

FIG. 2 is a drawing showing an example of a sectional shape of a tire.

FIG. 3 is a developed plan view showing a main part of a second embodiment of the present invention before vulcanization.

FIG. 4 is an enlarged vertical sectional view of an essential part of the second embodiment.

FIG. 5 is a side view of the anti-skid device for a tire.

FIG. 6 is a plan view of FIG.

FIG. 7 is a developed plan view of a conventional non-slip member before vulcanization.

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

FIG. 9 is a cross-sectional view showing a state of being mounted on a tire of a conventional example.

[Explanation of symbols]

 1 Anti-slip device 2 Wheels 4 Mounting member 5 Anti-slip member 5A Tread belt part 5B Side belt part 5C Side belt part base end 7 Connection curved part 8 Other part of side belt part R Connection radius of curvature RO Tire round Radius of curvature of shoulder part RS Round shoulder part T Tire t1 Thickness of connecting curved part t2 Thickness of other part W1 Width of connecting curved part W2 Width of other part

Claims (3)

[Claims] 1. A mounting member which is concentrically and removably mounted on an outer surface of a wheel of an automobile, an annular tread belt portion mounted on an outer peripheral portion of a tire, and a wheel center direction from one end of the belt portion. A non-slip member having a large number of side belt portions extending to the side belt portion, the wheel center side base end of the side belt portion being fixed to the mounting member, a tire facing side surface of the side belt portion. The radius of curvature of the curved portion of the connection with the tread belt of
A non-skid device for a tire, characterized in that the radius of curvature of the round shoulder portion from the shoulder portion to the sidewall portion of the tire is made smaller. 2. The base portion of the side belt portion excluding the connecting curved portion has a flat shape.
Anti-skid device for tires. 3. The width and / or thickness of the connecting curved portion of the side belt portion is larger than the width and / or thickness of the base portion of the side belt portion.
Or the anti-skid device for tire of item 2.