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Tire carcass cord structure

A cord structure and cord technology are applied in the reinforcement layers of pneumatic tires, tire parts, textiles, and papermaking, etc., and can solve problems such as shape boundaries.

Inactive Publication Date: 2011-06-01
HANKOOK TIRE WORLDWIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, in order to reduce the fatigue of the rubber as described above, there is also a method of increasing the EPI between the cords, but in this method, there is a shape limit due to the restriction of the EPI of the bead portion.

Method used

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  • Tire carcass cord structure
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Examples

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Embodiment Construction

[0015] Hereinafter, the present invention will be specifically described based on the accompanying drawings as examples.

[0016] image 3 It is a cord arrangement diagram showing the carcass cord structure of the tire of the present invention in a planar manner.

[0017] The present invention relates to a cord structure of a carcass in which a top surface (topping) is formed by rubber between cords 6 arranged at a constant EPI pitch and above and below the cords 6 , and the cords 6 The diameter D of the cord 6b is smaller than the diameter d of the cord 6b in the past. The cord 6 is arranged in a larger number than the cord in the past. Two cords 6 adjacent to each other in a certain section are helically wound and arranged as one cord 6a.

[0018] That is, in the cord structure of the carcass of the present invention, a pair of cords in the carcass 4 are formed into one unit, and the cords in a certain section are wound around the bead portion 5 to form a helical cord 6a. ...

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Abstract

The invention relates to a carcass cord structure of a tire, in particular to a carcass for the cord layer inside a tire, wherein the entire endurance of the tire is improved by improving the arrangement and the shape of steel cords and the fatigue tolerance of the rubber between the tire cords.According to the tire carcass cord structure of the invention, top surface made of rubber is formed between the cords (6) at certain EPI intervals and the upper and lower portions of the cords (6).The diameter (D) of the cords (6) is smaller than that of the conventional cords (6b).Therefore, the cords(6) are arranged with the number thereof greater than that of conventional cords.Among the cords (6) arranged in the tread portion (2), two adjacent cords (6) are spirally wound at a certain intervalat the bead part (5) to form the arrangement structure of the cords (6a) in a helical form.

Description

technical field [0001] The present invention relates to a carcass as a cord layer inside a tire. In particular, the present invention relates to a tire carcass cord structure that improves the rubber between the carcass cords by changing the arrangement and shape of the steel cords. In the way of fatigue resistance performance, the overall durability of the tire is improved. Background technique [0002] The carcass, which is one of the semi-finished products constituting the tire, is the cord layer inside the tire, and must support loads, withstand impacts, and have excellent fatigue resistance against flexion and extension movements during driving. [0003] figure 1 It is a partial cross-sectional view of a common tire 1, which shows a structure in which a carcass 4 is provided under a plurality of belt layers 3 provided inside a tread pattern portion 2 in contact with the road surface, and a carcass 4 is provided on the tire At the terminal end of the body 4, a bead por...

Claims

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Application Information

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IPC IPC(8): B60C9/07
CPCB60C9/02B60C9/10B60C2009/0071B60C2009/0433B60C2009/0441D02G3/48
Inventor 千允畅
Owner HANKOOK TIRE WORLDWIDE
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