Internal shoe-drum brake.

摘要

An internal shoe-drum brake has a pair of shoes (1, 2) separable by an actuator (4) into braking engagement with a brake drum. An automatic adjuster includes a two-part strut (9) extending between the shoes, one of the strut parts (12) being pivotally mounted on the other part (10) and cooperating with the latter via toothed means (11) on that part (10) such that the part (12) is separated from the toothed means when excessive shoe separation occurs upon brake actuation and is moved angularly to a new position of adjustment. The strut part (12) is provided with a number of peripheral projections (22) engagable by an external tool (20) to disengage the part from the toothed means when it is desired to de-adjust the adjuster in order to facilitate drum removal. <IMAGE>