Electric motor-and-gear assembly for vehicle accessories
First Claim
1. An electric motor-and-gear assembly for driving vehicle aggregates comprising a transmission housing (10) including a housing opening (12) that is closed by a housing cover (13) when assembled for operation, a motor housing (11) attached to the transmission housing (10), a commutator motor (14) contained in the motor housing (11), said commutator motor includes an elongated rotor shaft (17), which rotor shaft has an axis and supports a commutator (22), wherein the elongated rotor shaft protrudes into the transmission housing (10), a brush holder (23) fixed within the transmission housing (10), which brush holder (23) supports at least two commutator brushes (24) that rest against the commutator (22) with a spring force, the brush holder (23) having a U-shaped carrying part (25), and the commutator brushes (24) each includes a spring leaf actuator (26) prestressed toward the commutator (22), each spring leaf actuator (26) including a first actuator end (43) and a second actuator end (44), wherein each first actuator end (43) is fixed to the carrying part (25), and each second actuator end (44) supports a sliding body (27) that rests against the commutator (22), each sliding body (27) being fixed to the second actuator end (44) and guided against the commutator (22) only by said second actuator end (44), wherein the brush holder (23) is inserted into the transmission housing (10) through the housing opening (12) radially to the commutator (22), and the transmission housing (10) having positioning faces (37, 38) oriented at right angles to each other, and said positioning faces also being oriented such as to face in directions which are radial to the axis of the elongated rotor shaft, whereby the carrying part (25) of the brush holder (23) is positioned properly in radial directions at right angles to each other in relation to the commutator (22) by means of the carrying part (25) engaging the positioning faces (37, 38).
1 Assignment
0 Petitions
Accused Products
Abstract
An electric motor-and-gear assembly for driving vehicle aggregates such as windshield and rear window wipers, power-window units and the like, having a transmission housing that can be closed by a housing cover. A motor housing that contains a commutator motor whose commutator protrudes into the transmission housing and cooperates with a brush holder fixed in the transmission housing. For the sake of a more reasonably priced manufacture and a time-saving, more rapid assembly of the brush holder, the commutator brushes are embodied as hammer brushes with spring leaf actuators prestressed toward the commutator. The spring leaf actuator are respectively fixed with their one actuator end in a U-shaped plastic carrying part of the brush holder, which is inserted into the transmission housing radial to the commutator, through the housing opening and is positioned in the transmission housing in a positively engaging manner by means of the housing cover.
77 Citations
13 Claims
- 1. An electric motor-and-gear assembly for driving vehicle aggregates comprising a transmission housing (10) including a housing opening (12) that is closed by a housing cover (13) when assembled for operation, a motor housing (11) attached to the transmission housing (10), a commutator motor (14) contained in the motor housing (11), said commutator motor includes an elongated rotor shaft (17), which rotor shaft has an axis and supports a commutator (22), wherein the elongated rotor shaft protrudes into the transmission housing (10), a brush holder (23) fixed within the transmission housing (10), which brush holder (23) supports at least two commutator brushes (24) that rest against the commutator (22) with a spring force, the brush holder (23) having a U-shaped carrying part (25), and the commutator brushes (24) each includes a spring leaf actuator (26) prestressed toward the commutator (22), each spring leaf actuator (26) including a first actuator end (43) and a second actuator end (44), wherein each first actuator end (43) is fixed to the carrying part (25), and each second actuator end (44) supports a sliding body (27) that rests against the commutator (22), each sliding body (27) being fixed to the second actuator end (44) and guided against the commutator (22) only by said second actuator end (44), wherein the brush holder (23) is inserted into the transmission housing (10) through the housing opening (12) radially to the commutator (22), and the transmission housing (10) having positioning faces (37, 38) oriented at right angles to each other, and said positioning faces also being oriented such as to face in directions which are radial to the axis of the elongated rotor shaft, whereby the carrying part (25) of the brush holder (23) is positioned properly in radial directions at right angles to each other in relation to the commutator (22) by means of the carrying part (25) engaging the positioning faces (37, 38).
Specification