JPH0560908U - Tire anti-skid device - Google Patents

Abstract

(57) [Summary] [Purpose] In a ladder-type tire anti-slip device in which a mountain-shaped tread member is fixed to an inner rope and an outer rope with a hook at a predetermined interval, a single tire is attached to a multi-wheel tire. Prevents tire friction and damage due to the inner rope side hook. [Structure] Length A of Inside 12 of Tread Member 10
₁ and the end of the inside part 12 and the inner rope 20
The length A ₂ from the center line of the outer portion 30 is set shorter than the length B ₁ of the outside portion 13 and the length B ₂ between the end portion of the outside portion 13 and the center line of the outer rope 30. Then, when the tread member 10 is single-mounted on the multi-wheel tire, the position of the hook 14 on the inner rope 20 side is
The tire is placed at a position closer to the shoulder portion side than the portion corresponding to the maximum sectional width of the sidewall portion of the tire. Accordingly, even if the tire is bent by the load, the hook 14 does not come into contact with the sidewall surface of the tire facing the hook 14.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rudder-type tire anti-skid device that is used by being single-attached to a multi-wheel tire of a commercial vehicle.

[0002]

[Prior Art]

 Conventionally, a ladder-type tire anti-skid device is one in which both ends of a mountain-shaped tread member are fastened to the inner rope and outer rope, which are arranged in parallel, at predetermined intervals via hooks. is there.

[0003]

[Problems to be solved by the device]

 When using the above-mentioned rudder-type tire anti-skid device for multi-wheel tires of commercial vehicles such as trucks, buses, and light trucks, so-called single tires have been used only for the front tires. The hook on the inner rope side of the tread member in a state in which the tread member is mounted on the vehicle is arranged in a narrow position between the side wall surfaces of the facing multi-wheel tire.

Therefore, when the tire receives a load and bends, the inner rope side hook of the tread member may come into contact with the sidewall surface of the facing compound wheel tire. When running in this state, The opposing sidewall surfaces wear due to friction with the hooks. In particular, in a tire with a narrow gap between the two wheels, when the tire bends due to a load, the hooks are strongly sandwiched between the side wall surfaces, which causes serious damage to the side wall surfaces.

An object of the present invention is to solve the above problems and to provide a tire anti-skid device in which the arrangement position of the hook on the inner rope side is restricted when the tread member is mounted on the multi-wheel tire. And

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, in the tire anti-skid device according to the present invention, in the state where the tread member is attached to the tire, the center line of the rope fixed to the hook on the inner rope side of the tread member is It is arranged at a position in the tire radial direction between the lower edge of the shoulder portion and the portion corresponding to the maximum sectional width of the sidewall portion.

[0007]

[Action]

 When the tire anti-slip device of the present invention is attached to a tire, the hooks fixed to the inner rope side of the tread member are restricted in the position of the rope center line in the radial direction of the tire, so that the sidewall of the tire is restricted. The position is displaced toward the shoulder side from the part corresponding to the maximum sectional width of the part. Therefore, when a single tire is attached to a multi-wheel tire, the hooks on the inner rope side do not come into contact with the sidewall surface of the opposing tire even if the tire bends under the load.

Further, since the end portion of the inside portion of the tread member is arranged at a portion close to the lower edge of the shoulder portion of the tire, centrifugal force during running of the tire on the road surface or force such as side force during cornering is exerted. The tread member does not come off from the tire even if the

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a developed plan view of a tread member 10 of the present invention, and FIG. 2 is a side view thereof. The tread member 10 has a mountain shape in which the inside portion 12 and the outside portion 13 are formed by bending in the same direction from both ends of the tread member 11 in the longitudinal direction, and the tread member 10 has a reinforcing material (not shown) such as a tire cord. (2) is integrally molded by covering both surfaces with a flexible material such as rubber or synthetic resin, and U-shaped hooks 14 and 15 are attached to each end of the inside portion 12 and the outside portion 13. .. The hooks 14 and 15 are embedded in a flexible material by being joined to the reinforcing material in a rolled state. A spike pin 16 is attached to the front surface side (ground contact surface side) of the tread portion 11.

A predetermined number of the tread members 10 are arranged in parallel at predetermined intervals, and the hooks 14 of the inside portion 12 and the hooks 15 of the outside portion 13 are arranged in parallel. A rudder type tire anti-slip device is configured by caulking and fastening the rope 20 and the outer rope 30. In the tire antiskid device having the above-described configuration, the length A ₁ of the inside portion 12 of the tread member 10 is formed shorter than the length B ₁ of the outside portion 13. In addition, the hooks 14 of the inside portion 12 have a fastening portion 12b extending in the longitudinal direction from a base portion 12a protruding to both side surfaces of the end portion of the inside portion 12, but the hook 15 of the outside portion 13 has A fastening portion 15b extends in the longitudinal direction from the end surface of the end portion of the portion 13, and the base portion 15a is embedded in the end portion of the outside portion 13. In this way, by making the shapes and the attachment modes of both hooks 14 and 15 different, the length A ₂ from the end face of the end portion of the inside portion 12 to the center line of the inner rope 20 fixed to the hook 14 Is shorter than the length B ₂ from the end face of the outside portion 13 to the center line of the outer rope 30 fixed to the hook 15.

In this way, the length A ₁ of the inside portion 12 of the tread member 10 is not extremely shortened as compared with the length B ₁ of the outside portion 13, and the inner rope 20 is pulled from the base of the inside portion 12. the length a ₃ to the center line, are shorter by a predetermined length than the length B ₃ from the base point of the outside portion 13 to the center line of the outer ropes 30.

Regarding the length A ₁ of the inside portion 12 of the tread member 10 and the length A ₃ from the base point of the inside portion 12 to the center line of the inner rope 20, when the tread member 10 is mounted on a tire, , Set as follows based on the position where the inner rope 20 is arranged with respect to the tire. FIG. 3 shows the relative positions of the front tire 40 and the inside tire 12 on the side of the inside portion 12 when the tread member 10 of the present invention is mounted on the front tire 40.

The positions of the tires 40 and 41 when the tread member 10 is mounted in a state where no load is applied are shown by solid lines, and the center line of the inner rope 20 is the lower edge S of the shoulder portion 40 a of the tire 40. It is arranged in the tire radial direction between a portion W corresponding to the maximum sectional width of the sidewall portion 40b. Any position may be selected as long as it is within the above range, but in practice it is preferable to set the position from the bead base of the tire to approximately 3/4 of the tire section height H. In doing so, the position at a distance of 45 to 50 m / m from the upper edge of the shoulder portion 40a toward the sidewall portion 40b may be used as a guide.

The lengths B ₁ and B ₃ on the outside portion 13 side of the tread member 10 are the same as the conventional ones and will not be changed. The tread member 10 having the lengths A ₁ and A ₃ on the inside portion 12 side set as described above is indicated by a broken line in FIG. 3 even when the mounted tires 40a and 40b are bent by a load. As shown in the drawing, the hooks 14 of the inside portion 12 are arranged in a position relatively wider in the facing distance at a portion closer to the shoulder portion 40a than the sidewall portion 40b of the facing tires 40a and 40b. It will not come into contact with or get caught in the side wall surface of.

Although the length of the inside portion 12 of the tread member 10 is shorter than the length of the outside portion 13, when the tread member 10 is attached to the tire 40, the end portion of the inside portion 12 is Since the tire is arranged up to the lower edge of the shoulder portion 40a of the tire 40, even if the tread member 10 receives centrifugal force during road traveling of the tire 40 or side force during cornering, the tire 40 The adhesion to the tread surface is not impaired, and the tread surface does not fall off from the tire 40.

The tread member 10 of the present invention is not limited to the case where the length A ₁ of the inside portion 12 is made shorter than the length B ₁ of the outside portion 12 as in the above-described embodiment, but the length of the outside portion 13 is not limited to that. The length B ₁ may also be shortened to a length equivalent to the length A ₁ of the inside portion 12. Further, the hook 15 of the outside portion 13 of the tread member 10 may be replaced with the same hook 14 as the inside portion 12.

[0017]

[Effect of the device]

 As described above, according to the present invention, when the tread member is mounted on the tire, at least the position of the hook on the inside portion is closer to the shoulder portion side than the portion corresponding to the maximum sectional width of the sidewall portion of the tire. Therefore, even when the tire is flexed by the load with the tread member attached to the dual-wheel tire as a single piece, the inside hooks may come into contact with or be pinched by the sidewall surface of the opposing tire. It is possible to prevent wear and damage to the sidewall surface due to conventional hooks, and the end of the inside part of the tread member is located near the lower edge of the shoulder part of the tire. Therefore, the tread member does not come off from the tire while the tire is running on the road surface, and the tread member does not lose its function as a mountain-shaped tread member. Tire anti-skid device to demonstrate together the protection of the sidewall surface of the tire is obtained.

[Brief description of drawings]

FIG. 1 is a developed plan view showing a tread member of the present invention.

FIG. 2 is a side view showing an original shape of the tread member of FIG.

FIG. 3 is a comparative explanatory view showing a tread member of the present invention, which is single-mounted on a multi-wheel tire, in a state where the tire does not receive a load and when the tire bends under the load.

[Explanation of symbols]

 10 tread member 12 inside part of tread member 13 outside part of tread member 14 hook of inside part 15 hook of outside part 20 inner rope 30 outer rope 40 tire 40a tire shoulder part 40b tire sidewall part S shoulder part Lower edge W A part corresponding to the maximum cross-sectional width of the sidewall part

Claims (1)

[Scope of utility model registration request] 1. A tire anti-skid device comprising: an inner rope and an outer rope, which are arranged in parallel with each other, with hooks between an inside portion and an outside portion of a mountain-shaped tread member fixed at predetermined intervals. The center line of the inner rope fixed to the hook of the inside part of the tread member in the state where the tread member is mounted on the tire is the maximum cross section of the lower edge of the shoulder part of the tire and the sidewall part in the radial direction of the tire. A tire non-slip device, which is arranged between a portion corresponding to a width and a portion.