Brake lever for an s-cam automotive drum brake

Details Brake lever for an s-cam automotive drum brake Brake lever for an s-cam automotive drum brake

F - Mech Eng,Light,Heat,Weapons

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F16D 51/22 (2006.01) F16D 65/14 (2006.01) F16D 65/60 (2006.01)

Patent

CA 1163210

ABSTRACT;(to be published together with Fig.2) A brake lever for an automotive S-cam drum brake (1-3) has a worm wheel (12) for attachment to an S-cam shaft (5) and meshing with a worm screw (20) on a worm screw shaft (19), and a control arrangement (13, 14, 18, 25) including a control ring (25) rotatable on the worm screw shaft (19). In a force transmitting chain between the control ring and the worm screw shaft there is a clutch sleeve (26), a one-way clutch (28), a clutch ring (27) and a torque limit- ing clutch (32) biased into engagement by a strong spring (22) on the worm screw shaft, a control distance (A) in the form of a circumferential play being formed between the control ring and the clutch sleeve, which are biased towards a predetermined initial relative circumferential position by a spring (33).

366734

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