Bicycle brake device

Details Bicycle brake device Bicycle brake device

1996-03-06

1997-06-10

Young, Lee W.

Brakes

Vehicle

Velocipede

188 2419, B62L 300

Patent

active

056367163

ABSTRACT:
Each brake mechanism for a bicycle includes a brake arm having an upper portion and a lower portion, a link member having an upper portion and a lower portion, and a shoe attachment member for attaching a brake shoe thereto. The shoe attachment member is pivotally coupled to the upper portion of the brake arm and to the upper portion of the link member. The lower portion of the brake arm and the lower portion of the link member are adapted to be pivotally mounted to the bicycle so that the lower portion of the brake arm and the lower portion of the link member pivot when a braking force is applied by the cantilever brake apparatus to cause the brake shoe to move toward a wheel rim. The lower portion of the brake arm and the lower portion of the link member are spaced apart from each other for forming a four-bar link mechanism with the shoe attachment member. A link base is provided for attachment to the bicycle frame, wherein the link base includes an attitude maintenance mechanism for maintaining an attachment attitude of the link base relative to the bicycle frame. The link base includes a cylindrical component for fitting about the fixing pin, an engagement component fixed to one end of the cylindrical component, and an arm component fixed to another end of the cylindrical component. The lower portion of the link member is pivotally mounted to the arm component, and the engagement component includes an engagement pin for fitting in an opening formed on the bicycle frame. The shoe attachment member and the brake arm are structured and coupled so that one of the shoe attachment member or brake arm sandwiches the other one of the shoe attachment member or brake arm.

REFERENCES:
patent: 3921764 (1975-11-01), Mathauser

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