JPS6125291U

JPS6125291U - Fully covered chain case for bicycles

Info

Publication number: JPS6125291U
Application number: JP11057384U
Authority: JP
Inventors: 宏明乾
Original assignee: 大阪ケ−ス株式会社
Priority date: 1984-07-20
Filing date: 1984-07-20
Publication date: 1986-02-14
Also published as: JPS646395Y2

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図は本考案の全カバー型自転車用チェンヶースの全
体斜視図、第２図は第１図の■一■線に沿う断面図、第
３図および第４図は内面体と外面板との接合加工方法を
示す拡大断面図、第５図は従来例における内面板と外面
板の接合構造を示す断面図である。１・・・チェンケース、２・・・外面板、３・・・内面
板、６・・・外面部、７・・・周部、７ａ・・・（周部
の）端縁、Ｓ・・・隠蔽空間。Fig. 1 is an overall perspective view of the fully covered bicycle chain case of the present invention, Fig. 2 is a sectional view taken along line 1 and 1 in Fig. 1, and Figs. 3 and 4 show the inner body and outer plate. FIG. 5 is an enlarged sectional view showing a joining method, and FIG. 5 is a sectional view showing a joining structure of an inner surface plate and an outer surface plate in a conventional example. DESCRIPTION OF SYMBOLS 1... Chain case, 2... Outer surface plate, 3... Inner surface plate, 6... Outer surface part, 7... Peripheral part, 7a... Edge (of peripheral part), S...・Concealment space.

Claims

[Scope of utility model registration request]

The outer plate located on the outside of the front gear, the rear gear and the chain that is wound around these, and the inner plate located on the inside of the gear and chain are joined together at their peripheral edges, so that the gear and chain can be placed inside. In the full-cover type chain case, which forms a concealed space that can store the above-mentioned outer plate, the outer plate has a vertical and substantially planar outer surface portion, and is bent at a substantially right angle from the periphery of this outer surface portion in the thickness direction of the case. At the same time, a holding part that extends toward the bicycle body and then folds back in a U-shaped cross section is provided on the peripheral edge of the inner surface plate, and this holding part has a circumferential part of the outer surface plate. A full-cover type chain case characterized by an inner plate and an outer plate mutually connected by pinching and holding the edges.