Electric drive
First Claim
1. An electric drive having an electric motor (10) in a pot-like motor housing (14), having a gear mechanism housing (16) which is attached to the motor housing (14), and having an arrangement for radio interference suppression of the motor (10), characterized in that at least one choke coil (46, 48) for radio interference suppression is arranged in a transition region from the motor housing (14) to the gear mechanism housing (16), the transition region having portions in both the motor housing (14) and the gear mechanism housing (16) such that a first portion of the at least one choke (46, 48) is in the motor housing (14) and a second portion of the at least one choke (46, 48) is in the gear mechanism housing (16), and in that means (36, 56) are provided in the transition region in order to shield a filtered coil end (47, 49) which projects into the gear mechanism housing (16) from the interfering radiation generated by the motor (10).
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to an electric drive, particularly a windshield wiper drive for vehicles, comprising an electric motor (10) in a crucible-shaped, preferably metal, motor housing (14), a gearbox housing (16) that is attached to the motor housing (14), and an arrangement for the interference suppression of the motor (10). According to the invention, at least one choke coil (46, 48) for the interference suppression of the motor (10) is disposed in the transition region from the motor housing (14) to the gearbox housing (16), wherein in this transition region means (36, 56) are provided in order to shield the filtered coil end (47, 49) projecting into the gearbox housing (16) from the interfering radiation produced by the motor (10).
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Citations
22 Claims
- 1. An electric drive having an electric motor (10) in a pot-like motor housing (14), having a gear mechanism housing (16) which is attached to the motor housing (14), and having an arrangement for radio interference suppression of the motor (10), characterized in that at least one choke coil (46, 48) for radio interference suppression is arranged in a transition region from the motor housing (14) to the gear mechanism housing (16), the transition region having portions in both the motor housing (14) and the gear mechanism housing (16) such that a first portion of the at least one choke (46, 48) is in the motor housing (14) and a second portion of the at least one choke (46, 48) is in the gear mechanism housing (16), and in that means (36, 56) are provided in the transition region in order to shield a filtered coil end (47, 49) which projects into the gear mechanism housing (16) from the interfering radiation generated by the motor (10).
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17. An electric drive having an electric motor (10) in a pot-like motor housing (14), having a gear mechanism housing (16) which is attached to the motor housing (14), and having an arrangement for radio interference suppression of the motor (10), characterized in that
at least one choke coil (46, 48) for radio interference suppression is arranged in a transition region from the motor housing (14) to th gear mechanism housing (16); -
means (36, 56) are provided in the transition region in order to shield a filtered coil end (47, 49) which projects into the gear mechanism housing (16) from the interfering radiation generated by the motor (10); and a bearing plate (36) is integrally formed on the gear mechanism housing (16) and covers an end face (17) of the motor housing (14) which faces the gear mechanism housing (16) while leaving free a cutout (40) to allow a drive shaft (20) of the motor (10) to pass through and at least one further cutout (42) to allow at least one choke coil (46, 48) to pass through. - View Dependent Claims (18, 20, 21)
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19. The electric drive as claimed in 17, characterized in that the at least one choke coil (46, 48) is arranged with a relatively large portion of its overall length in the motor housing (14) and projects into the gear mechanism housing (16) only by way of its filtered end (47, 49).
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22. An electric drive having an electric motor (10) in a pot-like motor housing (14), having a gear mechanism housing (16) which is attached to the motor housing (14), and having an arrangement for radio interference suppression of the motor (10), characterized in that
at least one choke coil (46, 48) for radio interference suppression is arranged in a transition region from the motor housing (14) to the gear mechanism housing (16), means (36, 56) are provided in the transition region in order to shield a filtered coil end (47, 49) which projects into the gear mechanism housing (16) from the interfering radiation generated by the motor (10), and a substantially plate-like metal bearing holder (50) which covers a commutator (22) is arranged on a motor side of the bearing plate (36) of the gear mechanism housing (16) as an additional shield for the commutator region.
Specification