Brush bridge for commutator motor, has torsion spring arranged along plane running perpendicular to carbon brush, which is arranged in brush guide, where torsion spring is arranged above brush guide

摘要

The bridge (1) has a torsion spring (3) arranged along a plane running perpendicular to a carbon brush (2). The carbon brush is arranged in a brush guide (10), and the torsion spring is arranged above the brush guide. A pretensioned lever arm (4) of the torsion spring comprises an arc-shaped stopper at a free end of the lever arm. A recess is formed as a transverse groove, where outer diameter of the arc-shaped stopper corresponds to inner diameter of the recess. The torsion spring is held in a retainer (6) of the bridge.