Brush holder for mechanically commutated electric motors

Abstract

A brush holder for mechanically commutated electric motors has a support plate, a shaft-like guiding container mounted on the support plate for guiding a sliding brush pressed by a spring force against the commutator of an electric motor. The guiding container has side walls extending transverse to the support plate and provided with legs. A pressing spring is formed as a strip-shaped flat spring and has end portions which are oppositely rolled to form rollers abutting against the legs of the guiding container on surfaces of the legs which face the commutator and also have a central portion arranged to load an end surface of the sliding brush facing away from the commutator. The side walls of the guiding container are provided with recesses which are open to an end facing away from the commutator, have a depth extending to the supporting legs and have a width which is greater than a width of the pressing spring, each of the supporting legs at a transition to a side wall of the guiding container being provided with a slot which is open toward a side of the supporting leg facing away from the support plate, has a depth at least corresponding to the width of the pressing spring, and also has a longitudinal side merging into the recess located in a respective one of the side walls of the guiding container.

Dependencies are inferred from the claim text.