Title:
【発明の名称】空気入りラジアルタイヤのビード部構造
Document Type and Number:
Japanese Patent JP2986807
Kind Code:
B2
Abstract:
PURPOSE:To improve durability of a bead part by arranging a specific rubber member on the outside in the tire width direction of a reinforcing layer which is arranged on the outside in the radial direction of a tire compared with the folding back end part of a carcass, and also arranging a surface layer rubber on the outside in the tire width direction of the rubber member. CONSTITUTION:A reinforcing layer 13 is arranged on the anti-bead core 12 side in the proximity of the bead core 12 of a carcass 10. The outside end part 13A in the radial direction of a tire of the outside part 13B in the tire width direction of the reinforcing layer 13 is extendedly provided on the outside in the radial direction of the tire compared with the outside end 10C in the radial direction of the tire of the folding back part 10A of the carcass 10. In this case, a hard rubber sheet 29 as a rubber member having a higher modulus value at 20% extension compared with the coating rubber of the reinforcing layer 13 is arranged on the outside in the tire width direction compared with the outside part 13B in the tire width direction of the reinforcing layer 13. A surface layer rubber 34 is arranged on the outside in the tire width direction of the hard rubber sheet 29, for protecting its weatherproof.
Inventors:
NAKAGAWA EIKO
KOSEKI HIROYUKI
KOSEKI HIROYUKI
Application Number:
JP14353289A
Publication Date:
December 06, 1999
Filing Date:
June 06, 1989
Export Citation:
Assignee:
BURIJISUTON KK
International Classes:
B60C15/00; B60C15/06; (IPC1-7): B60C15/00
Domestic Patent References:
| JP61193904A | ||||
| JP61232905A |
Attorney, Agent or Firm:
Atsushi Nakajima (1 person outside)