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Pneumatic vehicle tire

A technology for pneumatic tires and vehicles, used in heavy-duty tires, heavy-duty vehicles, special tires, etc., to solve the problems of decoupling groove cracks, enlarged belts, groove cracks, etc.

Inactive Publication Date: 2012-07-04
HANKOOK TIRE WORLDWIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in order to prevent such abnormal wear of both ends of the tread, the following problems sometimes occur in tires with narrow decoupling grooves provided at a certain distance from both ends of the tread: Stone biting in the groove, the decoupling groove is cracked; or more seriously, the lower end of the groove is cracked, and the crack becomes larger and the damage spreads to the belt
However, this technique has a problem that it cannot fully satisfy the expected value

Method used

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Embodiment Construction

[0009] The present invention, in a pneumatic tire for a vehicle composed of a tread, a sidewall and a bead, is characterized in that an additional height (h) that is lower than the height (H) of the main rib is provided at both ends of the tread Rib 4, and the additional rib 4 is formed in a hook shape with a protrusion 41 on the inside, and the decoupling groove 5 formed by the additional rib 4 and the adjacent block has a narrow entrance width (s), the decoupling groove 5 The bottom is 51 wide.

[0010] Preferably, the height (h) of the additional rib 4 is 20%-50%, especially 38%, of the height (H) of the main rib. Preferably, the bottom 51 of the aforementioned decoupling groove 5 is formed into a circle with a vertical cross-sectional shape with a radius of curvature of R1.5. This shape disperses the stress and can prevent cracking. In order to have a better cushioning effect, preferably, the total depth (D) of the decoupling groove 5 from the tread surface is 100-110% of th...

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Abstract

The present invention relates to a vehicle tire, especially relates to an improvement of the decoupling groove which is used to prevent the abnormal abrasion. In the invention the inflatable tyre which is composed of a tread, a lateral wall and a tyre band is characterized in that the bottom at the two sides of the tread is arranged with additional gills that has a lower height than the height of the main gill, the additional gill is formed with a hook of the projecting part at the inner side, and the decoupling groove which is formed by the additional grill and the adjacent block is provided with a narrow entry width and a broad bottom, otherwise, not only the buffering function of the decoupling groove is used to prevent the abnormal abrasion phenomenon at the two sides of the tread, but also the restraining to the phenomenon that the small rock and foreign matter are clipped in the decoupling groove are used to prevent the damages of decoupling groove cracking, etc.

Description

Technical field [0001] The present invention relates to vehicle tires, and more particularly to the improvement of decoupling grooves for preventing abnormal wear of trucks and heavy-duty tires. Background technique [0002] Heavy-duty tires used for trucks and buses usually have a radial structure. The structure has a steel carcass ply and 3-4 belt layers. Although it varies from product to product, it differs in the direction of the tire. About 3-5 ribs are arranged in the circumferential direction. The tires of this shape have excellent straight forward driving performance and are conducive to the steering effect of the vehicle. Compared with the block or lug-shaped pattern (pattern), the riding feeling is better, and it has low noise and Features of superior drainage performance. [0003] Tires for trucks and buses, which mainly run long distances, have the possibility of lateral sliding caused by frequent steering action and abnormal wear depending on driving conditions or t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C11/13
CPCB60C1/00B60C11/01B60C13/02B60C2011/039B60C2200/06
Inventor 朴胜钟
Owner HANKOOK TIRE WORLDWIDE
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