Electric Motor and Method for Manufacturing an Electric Motor for a Motor Vehicle Actuator Drive
AssigneeSiemens Aktiengesellschaft
InventorTobias Buban
Life of this patent
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Abstract
The invention relates to an electric motor and a method for manufacturing an electric motor for a motor vehicle actuator drive. The electric motor has a motor housing, a rotor assembly and a stator assembly. The stator assembly has stator teeth which are each provided with a notch in the region of their tooth back. A securing pin, which secures the stator assembly in the motor housing, is inserted into each of these notches.
Claims11
1-10. (canceled)
An electric motor for a motor vehicle actuator drive, comprising:
- a motor housing,
- a rotor assembly which is inserted into the motor housing and which has a rotor packet which is attached to a rotor shaft, and
- a stator assembly which is inserted into the motor housing and has stator teeth,
- wherein at least one stator tooth has, in the region of its tooth back, a notch into which a securing pin is inserted, and
- wherein the notch and the securing pin which is inserted into the notch interact in such a way that forces act on the stator assembly in the tangential direction, as a result of which an external circumference of the stator assembly is widened in its entirety, and as a result forces act in turn on the motor housing in a radial direction, as a result of which the stator assembly is secured in the motor housing.
The electric motor of claim 10, wherein the stator assembly has three stator teeth which have a notch and a securing pin which is inserted therein, wherein the stator teeth are each offset with respect to one another by 120° in the circumferential direction of the stator assembly.
The electric motor of claim 10, wherein the stator assembly has a stator core which has stator teeth and is continuous in the circumferential direction.
The electric motor of claim 10, wherein the stator assembly has a stator core which is composed of individual toothed segments.
A method for manufacturing an electric motor for a motor vehicle actuator drive comprising:
- inserting a stator assembly, having stator teeth, in an axial direction into a motor housing,
- inserting securing pins into notches, provided in a region of a tooth back of the stator teeth, in an axial direction of the stator assembly in such a way that a notch and a securing pin interact such that forces acting in the tangential direction are applied, which forces act in an overall widening fashion on an outer circumference of the stator assembly, as a result of which, in turn, forces acting in a radial direction on the motor housing are produced and the stator assembly is secured in the motor housing,
- inserting a rotor assembly in the axial direction into the motor housing, and
- fitting an end plate in the axial direction in order to close off the motor housing.
Dependencies are inferred from the claim text.