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

16

D

F16D 65/28 (2006.01) F16D 65/60 (2006.01)

Patent

CA 2103080

A brake lever for an S-cam brake has a worm wheel (3) engaging the S-cam shaft and a worm screw (4) meshing therewith. A clutch wheel (6) on the worm screw forms a clutch (8) therewith under the bias of a compression spring (9). A control movement is transmitted from an external reference point to the clutch wheel via a pinion (15), a carrier wheel (16) and a control screw (18), the common axis of these three parts being perpendicular to the worm screw, wherein the control screw meshes with the clutch wheel. The carrier wheel can be turned relative to the pinion an angular distance corresponding to the desired slack and is biassed to one end position by a torsion spring (17), which is also used to engage a one-way clutch (19) between the carrier wheel and the control screw.

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