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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., and can solve problems such as cracked belts, groove cracks, and decoupling groove cracks.

Inactive Publication Date: 2008-03-12
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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  • Pneumatic vehicle tire

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Embodiment Construction

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

[0010] Preferably, the height (h) of the additional ribs 4 is 20%-50%, especially 38%, of the height (H) of the main ribs. Preferably, the bottom 51 of the above-mentioned decoupling groove 5 is formed into a circle whose vertical cross-sectional shape has a radius of curvature of R1.5, and this shape can disperse stress, thereby preventing cracking. In order to have a better cushioning effect, preferably, the total depth (D) of the decoupling groove 5 from the tread is 100-110% of ...

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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 in particular to improvements in decoupling grooves for preventing abnormal wear of truck and heavy-duty tires. Background technique [0002] Heavy-duty tires for trucks and buses usually have a radial structure with a carcass ply of steel material and 3-4 belt layers, although it varies from product to product, but in the forward direction of the tire There are about 3-5 ribs (Rib) arranged in the circumferential direction. This shape of tire has excellent straight-ahead driving performance, and is conducive to the steering action of the vehicle, and compared with the block or bump (Lug) shaped pattern (pattern), it has a better ride feeling, and has low noise and Excellent drainage performance characteristics. [0003] Tires for trucks and buses, which are mainly used for long distances, may cause lateral slip due to frequent steering actions, and abnormal wear may occur depending on driving condi...

Claims

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Application Information

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