JPS611489U

JPS611489U - Bicycle exterior derailleur

Info

Publication number: JPS611489U
Application number: JP8717384U
Authority: JP
Inventors: 宣時石川
Original assignee: リョービ株式会社
Priority date: 1984-06-11
Filing date: 1984-06-11
Publication date: 1986-01-07

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本考案に係る自転車用外装変速機の取付部を示
した縦断側面図、第２図、第３図は同取付部におけるカ
ム部の変形例を夫々示した各展開図、第４図は同変速機
の正面図、第５図は同変速機のセット状態を示した説明
図、第６図は従来変速機のセット状態を示した説明図で
ある。４・・・変速機本体、５・・・取付孔、６・・・取付軸
、６ａ・・・ネジ部、６ｂ・・・頭部、７・・・プッシ
ュ、１０・・・捩りバネ、１０ａ，１０ｂ・・・捩りバ
ネの端部、１１・・・カム部ζ ｌｌａ・・・第１のカ
ム面、１１ｂ・・・第２のカム面、ｌｌｃ・・・カム当
り面。FIG. 1 is a vertical cross-sectional side view showing the mounting part of the bicycle external transmission according to the present invention, FIGS. 2 and 3 are exploded views showing modified examples of the cam part in the mounting part, and FIG. The figure is a front view of the same transmission, FIG. 5 is an explanatory diagram showing the set state of the same transmission, and FIG. 6 is an explanatory diagram showing the set state of the conventional transmission. 4...Transmission body, 5...Mounting hole, 6...Mounting shaft, 6a...Threaded part, 6b...Head, 7...Push, 10...Torsion spring, 10a , 10b... End of torsion spring, 11... Cam portion ζ lla... First cam surface, 11b... Second cam surface, llc... Cam contact surface.

Claims

[Scope of utility model registration request]

A mounting shaft 6 having a threaded portion 6a and a head 6b is inserted through one end of the mounting hole 5 of the converter main body 4, which has a pusher 7 arranged at the other end, and a torsion panel 10 is interposed between the main body and the mounting shaft. death,
Its ends 10a, . 10b is hooked to the main body and the push, respectively, and the main body and/or the push have grooves inclined in opposite directions from the cam contact surface 11c in the circumferential direction of the torsion spring. 1
At least one cam portion 11 is provided in which a cam surface 11a and a second cam surface 1lb are arranged in series, and the end of the torsion spring is attached to the first cam surface by axial compression of the mounting shaft. allows forcibly guided movement in the torsional direction, and
1. An external bicycle transmission, characterized in that the external transmission is engaged with a cam surface so as to be freely movable in a counter-torsion direction.