Hydraulically-operable disk brake for bicycles or similar vehicles
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16D-055/18
F16D-055/02
출원번호
US-0087216
(1993-07-02)
우선권정보
DE-4222044 (1992-07-04)
발명자
/ 주소
Gajek Joachim (Wrzburg DEX) Stumpf Hannsjrg (Schweinfurt DEX)
출원인 / 주소
Fichtel & Sachs AG (Schweinfurt DEX 03)
인용정보
피인용 횟수 :
22인용 특허 :
0
초록▼
In accordance with the invention, a hydraulic disk brake for bicycles is provided which includes a brake caliper 1, 101, a brake piston 8, 108, 208, and a guide cylinder 2, with the aid of which the brake system can be pre-adjusted in a coarse manner with respect to the bicycle frame. The total clea
In accordance with the invention, a hydraulic disk brake for bicycles is provided which includes a brake caliper 1, 101, a brake piston 8, 108, 208, and a guide cylinder 2, with the aid of which the brake system can be pre-adjusted in a coarse manner with respect to the bicycle frame. The total clearance (=2דs”), of the brake linings 18a, 18b is capable of pre-adjustment. The central position of the brake caliber 1, with respect to the brake disk 21, can be adjusted via an adjusting screw 22. The brake is arranged for constant, equal clearance on both sides of the brake disk 21 in the unstressed condition of the brake, such clearance being ensured on the basis of the spring-action, pre-tensioning of the brake piston 8, 108, 208, with respect to the brake caliper 1, as well as of the spring-action pre-tensioning of the brake caliper 1, 101 with respect to the guide cylinder 2.
대표청구항▼
A combination of an hydraulically-operable disk brake and a vehicle frame (80) having a wheel hub (300), comprising: a brake disk (21) adapted to be connected to the wheel hub (300) for rotation therewith around the hub axis (310); a substantially U-shaped brake caliper (1; 101) having two lateral l
A combination of an hydraulically-operable disk brake and a vehicle frame (80) having a wheel hub (300), comprising: a brake disk (21) adapted to be connected to the wheel hub (300) for rotation therewith around the hub axis (310); a substantially U-shaped brake caliper (1; 101) having two lateral legs and a central part that connects the two lateral legs; means, including a guide cylinder (2), for mounting the brake caliper (1; 101) on the vehicle frame (80) such that the two lateral legs straddle the brake disk (21) and the brake disk (21) runs therebetween and such that the brake caliper (1; 101) is shiftable in a direction that is substantially parallel to the hub axis (310); a first brake-lining part carried in a stationary manner opposite the brake disk (21) on one of the two lateral legs; a second brake-lining part carried opposite the brake disk (21) on the other of the two lateral legs; a piston-accommodating opening (1a) in the side of the other lateral leg facing away from the brake disk (21); a brake piston (8; 108; 208) mounted in the opening (1a) so as to move, in a shift direction that is substantially parallel to the hub axis (310), between an initial end-position that is more distant from the brake disk (21) and a braking position that is located closer to the brake disk (21); means for establishing a fluid-tight seal between the brake piston (8; 108; 208) and the piston-accommodating opening (1a) throughout said movement; the brake piston (8; 108;208) having two front-sides, one of the front sides having a T-shaped opening engaging the second brake-lining part and the other front-side limiting a pressurized fluid chamber (70) within the other lateral leg; a supply line (7,7a) for pressurized fluid connected to the pressurized fluid chamber (70) for the simultaneous shifting of the brake piston (8; 108; 208) and the second brake-lining part in the direction of the braking position when pressurized fluid is supplied to the pressurized-fluid chamber (70); first pre-tensioning means (11; 111; 211), acting between the brake piston (8) and the brake caliper (1) for elastically pre-tensioning the brake piston (8; 108; 208) into the initial end-position; second pre-tensioning means (6), acting between the brake caliper (1; 101) and the guide cylinder (2), for elastically pre-tensioning the brake caliper (1; 101) into an initial end-position in which the one lateral leg that carries the first brake-lining part is spaced a maximum distance from the brake disk (21), the guide cylinder (2) being substantially pot-shaped, with a pot bottom (48) and a pot wall, the other lateral leg of the brake caliper (1) carries a projection (40) that receives the brake piston (8; 108.; 208), which projection (40) is mounted in a shiftable manner in the pot-shaped guide cylinder (2); and adjusting means (22), acting between the brake caliper (1; 101) and the guide cylinder, for the optional adjustment of the initial end-position of the brake caliper (1; 101) in a manner such that in the initial end-position of the brake caliper (1) and simultaneously in the initial position of the brake piston (8), the distance (“s”) between the brake disk (21) and the first brake-lining part is equal to the distance (“s”) between the brake disk (21) and the second brake-lining part.
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이 특허를 인용한 특허 (22)
Buckley James A. ; Hinkens George H. ; Johnson Korey, Bicycle brake system having a flexible disk.
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