JPS5821763Y2 - Cross belt in tire anti-slip device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a cross belt in a tire anti-slip device.

In recent years, anti-slip devices for tires have been developed in which multiple strip-shaped cross belts made of elastic material such as synthetic resin are stretched between two parallel strings at predetermined intervals in a ladder-like manner. An even more expensive structure has been proposed in which spikes are driven into the cross belt.

Compared to conventional metal chain devices, such anti-slip devices for tires are lighter and more convenient to carry, generate less noise when running, and cause less damage to tires and paved road surfaces. However, on extremely slippery roads such as frozen steep slopes, the ground contact force of the cross belt is insufficient, and there is a risk that the tires may spin, making it impossible to drive.

Therefore, in the past, JP-A-52-11503, JP-A-51
A method of fixing a metal blade to a cross belt has been proposed as described in Japanese Patent No. 64207.

However, these conventional methods cannot prevent tires from skidding and are not practical.

The present invention is an attempt to solve the above-mentioned problems and to provide a cross belt with a simple structure, excellent ground contact force, easy to run over frozen steep slopes, etc., and without side slipping.

To explain an embodiment illustrating the present invention, reference numeral 1 is a strip-shaped cross belt made of an elastic material such as a deformable synthetic resin, and the cross belt 1 has a ground plane on both side edges. One metal blade 3, each formed with edge portions 2, 2 parallel to the longitudinal direction of the cross belt 1 and slanting outward and upward, is fixed to approximately the center of the cross belt 1 with a rivet or spikes 4, 4, etc. do.

This fixation is such that when the cross belt 1 is attached to the tire 11, both ends 3a of the metal blade 3 can protrude in a direction parallel to the ground contact surface of the tire.
A, 3a is secured by rivets or spikes 4, 4 at a position closer to the center.

It is desirable to subject the edge portions 2, 2 of the blade 3 to a surface hardening treatment by quenching, carburizing, etc. to improve wear resistance.

Reference numeral 5, 5 indicates a metal fitting having a hook-shaped cross section fixed to both ends of the cross belt 10 with rivets 6.6, and a stopper 9 having hook portions 8, 8 at both ends with a bracket 7.7 on the head surface.
is housed in a rotatable manner.

To explain the operation of the above structure, first, there is a known tire in which a strip-shaped cross belt made of an elastic material such as a synthetic resin is stretched between the two parallel string members at predetermined intervals in a ladder shape. When a tire that has already been fitted with an anti-slip device on its outer circumferential surface loses its ground contact force on a steep, frozen slope and becomes difficult to drive, the cross belt of the present invention can be added as shown in Figure 3. Attach it to tire tire 11 as shown.

That is, after hooking the metal fittings 5, 5 to the string members 10, 10, which are connected in a ring shape on both sides of the tire 110, the stoppers 9, 9 are rotated and the hooks are connected to the string members 10, 10, respectively. 10 respectively, and the cross belt 1 is curved and deformed so as to cross the outer circumferential surface of the tire and come into close contact with the tire.

However, the blade 3 stuck to the ground surface of the cross belt 1.
The edge portions 2, 2 on both sides of the cross belt 1 are parallel to the longitudinal direction of the cross belt 1 and are slanted outward and upward, so as the tire rotates, it is firmly attached to the road surface in a direction perpendicular to the direction of travel of the tire. Therefore, it is possible to move forward powerfully even on steep, icy slopes without spinning the tires.

In particular, since the cross belt 1 is curved and deformed so as to be in close contact with the outer peripheral surface of the tire 11, both ends 3a, 3a of the metal blade 30 are separated from the outer peripheral surface of the tire 11, and as shown in FIG. protrudes in a direction parallel to the ground plane.

When the tire 11 tries to skid, these protruding parts 3a, 3a dig into the road surface and prevent it.

In this embodiment, the MR metal fittings 5.5 are fixed to both ends of the cross belt 1, and the MR fittings 5.5 are attached detachably to a tire that has been fitted with an anti-slip device in advance. It is also possible to attach the cross belt of the present invention to the material in advance and integrate it into the material.

The present invention has a simple structure and is easy to manufacture, exhibits excellent ground contact even on extremely slippery roads such as frozen steep slopes, and ensures forward movement without spinning the tires. Moreover, it has a practical effect of preventing sideslip.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view;
FIG. 2 is a sectional view taken along the line A--A in FIG. 1, and FIG. 3 is a front view showing the state in which it is mounted on a tire. 1...Cross belt, 2...Edge portion, 3...Metal blade.

Claims (1)

[Claims for Utility Model Registration] 1. Edge portions 2°2 parallel to the longitudinal direction of the cross belt 1 and slanting outward and upward are provided on both sides of the ground plane of the cross belt 1 formed of an elastic material. The single metal blade 3 thus formed is fixed to approximately the center of the cross belt 1,
The fixation is such that when the cross belt 1 is attached to the tire 11, both ends 3a, 3a of the metal blade 30 are located closer to the center than both ends 3a, 3a of the metal blade 30, so that they can protrude in a direction parallel to the ground contact surface of the tire. A cross belt in a tire anti-slip device, characterized in that it is formed with rivets or spikes (4, 4). 2. A cross belt in a tire anti-slip device according to claim 1, wherein the edge portions 2, 2 are subjected to surface hardening treatment.