Pneumatic tire

A technology for pneumatic tires and tires, applied in the direction of pneumatic tires, reinforcement layers of pneumatic tires, special tires, etc., can solve the problem that the improvement effect of tire lightweight driving stability may not be sufficient, and achieve lightweight and driving stability, The effect of improving driving stability
CN103221233AInactive Publication Date: 2013-07-24THE YOKOHAMA RUBBER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
THE YOKOHAMA RUBBER CO LTD
Publication Date
2013-07-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

Proposed is a pneumatic tire which has an excellent balance between tire weight reduction and steering stability. The height (H) of a bead filler (6) from a bead heel (3a) is set to 10-30 mm, and an inner liner (9) arranged inside a carcass layer (4) is configured of a thermoplastic resin that has a Young's modulus of 70-1500 MPa and a thickness of 0.05-0.25 mm or a thermoplastic elastomer composition that is obtained by blending a thermoplastic resin component and an elastomer component. An end portion (9a) of the inner liner (9) is positioned inside a radially outer end portion (6a) of the bead filler (6) in the tire radial direction.
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Description

technical field

[0001] The present invention relates to a pneumatic tire, and more specifically, to a pneumatic tire having a high degree of weight reduction and driving stability of the tire. Background technique

[0002] In recent years, for the purpose of low fuel consumption of vehicles, it is required to reduce the weight of pneumatic tires. As a method for this weight reduction, countermeasures such as reducing the thickness of the rubber layer constituting the tire or reducing the number of carcass layers have been taken. However, when this countermeasure is adopted, the rigidity in the circumferential direction of the tire is greatly reduced, so there is a problem that the driving stability is reduced.

[0003] Therefore, Patent Document 1 proposes that both ends of the carcass ply are folded back to a position beyond the maximum tire width, the height of the bead filler from the tire heel is 15 to 30% of the cross-sectional height of the tire, and the sidewall The...

Claims

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