JPS6029704U

JPS6029704U - radial tires

Info

Publication number: JPS6029704U
Application number: JP12314183U
Authority: JP
Inventors: 稔上田; 峰川　弘志; 出井　健雄
Original assignee: オ−ツタイヤ株式会社
Priority date: 1983-08-06
Filing date: 1983-08-06
Publication date: 1985-02-28

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来タイヤの断面図、第２図は従来例のビード
部断面を示す拡大説明図、第３図は本考案の第１実施例
に係るビード部断面を示す拡大説明図、第４図は同第２
実施例の拡大説明図、第５図は同第３実施例の拡大説明
図、第６図は同第４実施例の拡大説明図、第７図は同第
５実施例の拡大説明図、第８図は同第６実施例の拡大説
明図である。４・・・ビード部、５−・・ビードコアー、６・・・カ
ーカス、訃・・ビードトウ、９・・・ビードヒール、１
１・・・第１補強層、１２・・・カーカス巻き上げ端、
１３・・・第１補強層巻き上げ端、１７・・・第２補強
層、１８・・・第１プライ、１９・・・第２プライ、２
０・・・リムフランジ、２１．２２・・・下端、２３．
２４・・・上端。FIG. 1 is a sectional view of a conventional tire, FIG. 2 is an enlarged explanatory view showing a cross section of a bead portion of the conventional example, FIG. 3 is an enlarged explanatory view showing a cross section of a bead portion according to the first embodiment of the present invention, and FIG. The figure is the same number 2
FIG. 5 is an enlarged explanatory diagram of the third embodiment, FIG. 6 is an enlarged explanatory diagram of the fourth embodiment, and FIG. 7 is an enlarged explanatory diagram of the fifth embodiment. FIG. 8 is an enlarged explanatory diagram of the sixth embodiment. 4...Bead part, 5-...Bead core, 6...Carcass, butt...Bead toe, 9...Bead heel, 1
1... First reinforcing layer, 12... Carcass winding end,
13... First reinforcing layer rolled up end, 17... Second reinforcing layer, 18... First ply, 19... Second ply, 2
0... Rim flange, 21. 22... Lower end, 23.
24...Top end.

Claims

[Claims for Utility Model Registration] Both ends of a rubber-covered toroidal carcass provided between a pair of bead cores are rolled up from the bead toe side, surrounding the bead cores, and upward toward the bead heel side, and the rolled up portion of the carcass a rubber-coated first reinforcing layer located on the outside and rolled up from the bead toe side to the bead heel side; and a rubber-covered second reinforcement layer located on the outside of the first reinforcing layer and extending upward from the bead heel side. - In a radial tire provided with a reinforcing layer: the second reinforcing layer is composed of a plurality of polymerized plies having at least a first ply and a second ply, and the lower end of one of the first and second plies is The first ply and the second ply of the second reinforcing layer are arranged between the side position of the bead core and a position near the upper end of the rim flange, and the lower end of the other ply is arranged near the upper end of the rim flange; A polymerization zone covers both rolled ends of the carcass and the first reinforcing layer; the dynamic modulus of the covering rubber of the second reinforcing layer is the dynamic modulus of the covering rubber of both the carcass and the first reinforcing layer A radial tire characterized by being equal to or greater than .