DC motors for driving motor vehicle components

Abstract

The invention relates to a direct current motor (32) for driving components of a motor vehicle, said direct current motor having a housing (36) which radially surrounds a stator and a rotor of said direct current motor (32), and made of conductive material; a bearing end cover (38), which restricts the DC motor (32) in the axial direction, and the drive shaft (34) of the DC motor (32) from the bearing end cover Protrude from the central position of the bearing end cover, and extend two connecting contacts (42) for supplying voltage to the DC motor (32) from the bearing end cover, wherein the bearing end cover is made of non-conductive material A circuit board (54), on which electronic components (56, 58) for anti-interference are arranged, and the circuit board has a central opening (55), the drive of the DC motor (32) The shaft (34) protrudes through the central opening, and the circuit board has two insertion openings (64), through which the two connection contacts (42) of the DC motor (32) protrude. and means (10) for forming a ground connection to said circuit board (54). However, it is difficult to form a ground connection. To simplify this, it is provided according to the invention that the plate (10) as means for forming the ground connection of the printed circuit board (54) is arranged axially on the electronic components (56, 58) for interference suppression. Between the circuit board (54) and the bearing end cover (38), the plate has a first contact (20; 22) for connecting with the housing (36) and for connecting with the circuit board ( The second contact (24) connected to the conductor circuit (60) of 54).

Description

technical field [0001] The invention relates to a direct current motor for driving motor vehicle components, said direct current motor having a housing, a bearing end shield, a circuit board and means for making a ground connection of said circuit board, said housing enclosing the direct current motor Stator and rotor, and made of conductive material, the bearing end cover defines the boundary of the DC motor in the axial direction, and the drive shaft of the DC motor protrudes from the center of the bearing end cover, and from the bearing end cover Extend two connection contacts for supplying voltage to the DC motor, wherein the bearing end cover is made of non-conductive material, electronic components for anti-interference are arranged on the circuit board, and the circuit board There is a central opening through which the drive shaft of the DC motor protrudes, and the circuit board has two insertion openings through which the connection contacts of the DC motor protrude. ...

AI Technical Summary

Problems solved by technology

[0002] It is known that the use of DC motors, whether electrically commutated or brush-holder commutated, can generate electromagnetic radiation disturbances which can adversely affect the operation of other electronic systems or, for example, impair radio reception or radio communication

At the same time, there is also the sensitivity of the system itself to the radiation interference of other electronic systems

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