Brush module and assembly method

A method for mounting a brush module (10) on an electric machine, at least a brush (13) of the brush module forming an electric contact with a slip ring of the machine, the brush being accommodated and holding in a brush holder (11) of the brush module, an mounting device (12) of the brush module being realized as a U-shaped sheet-metal bracket (17) which engages over the brush holder, the sheet-metal bracket being realized having laterally protruding fastening tabs (18), the brush holder being fastened to a mounting surface (19) by means of the fastening tabs,

• wherein an access opening (25) is formed in the brush holder, a retaining tab (26), which is formed on a fastening tab of the sheet-metal bracket, engaging in the access opening and holding the brush in the brush holder in a retaining position (24) in a form-fitting manner, the fastening tab having the retaining tab being inclined at an angle α relative to the mounting surface of the brush holder, and
• wherein the fastening tab (18) is inclined at angle α and comes into contact with the mounting surface (19), the retaining tab (26) releasing the brush (13) and the brush being moved into a contact position (31) when the fastening tab is at an inclination of angle α and wherein the retaining tab is coupled to the fastening tab such that the retaining tab follows movement of the fastening tab through angle α to release the brush and permit the brush to be moveable into the contact position.