Vibration-reduced brush holder for an electric motor

摘要

A brush holder for an electric motor includes a brush magazine forming a receiving space with a wall surface. A carbon brush having an end face and a side face is arranged in the receiving space. The brush holder also includes a spring, which is in contact with the end face and is configured to press the carbon brush in an extension direction of the receiving space. The brush holder also includes a pressing mechanism arranged on a pivot arm and configured to contact the side face and press the carbon brush by the force of the spring in a pressing direction against the wall surface. The pivot arm has a pivot shaft, to which an inner end of the spring is fastened. The pressing mechanism has a rolling surface configured to roll over the side face of the carbon brush when the carbon brush slides in the extension direction.

主权项

1. A brushholder for an electric motor comprising:
a carbon cartridge forming an accommodating area with a lateral surface, wherein a carbon brush arranged in the accommodating area has an end face and a side face; a spring configured to rest on the end face and press the carbon brush in a direction of extent of the accommodating area; and a pressing mechanism arranged on a pivoting arm and configured to rest on the side face and press the carbon brush, by a force of the spring, in a pressing direction against the lateral surface, wherein the pivoting arm has a pivoting shaft on which an inner end of the spring is fixed, and wherein the pressing mechanism has a rolling surface configured to roll on the side face of the carbon brush as the carbon brush slides in the direction of extent.