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Stator housing for electric machine

A stator shell and stator technology, applied in the direction of electrical components, casing/housing/support, electromechanical devices, etc., can solve the problems of time-consuming work steps, expensive ovens, etc., and achieve the effect of reliable connection

Active Publication Date: 2020-03-06
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, time-consuming subsequent work steps and expensive ovens are required for this

Method used

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  • Stator housing for electric machine

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Embodiment Construction

[0026] The drawing shows a cross-section of an electric machine 10 comprising a stator 1 and a rotor 2 . The housing 3 is visible in the right-hand area 31 of the electric machine 10 , which is completely present in the left-hand area 32 of the drawing, but is shown transparently. Due to the transparency of the housing 3 , profile deviations in the form of knurls 4 are visible on the stator 1 , which serve to increase the coefficient of friction between the stator 1 and the housing 3 .

[0027] The knurling 4 occupies a partial area of ​​the contact surface between the stator 1 and the housing 3 and is formed on the surface of the stator 1 facing the housing 3 . The figures show that exactly one partial surface is knurled. The knurling 4 is formed as a knurling with grooves parallel to the axis and realizes a non-positive connection and a form-fit connection of the stator 1 to the housing 3 .

[0028] The knurling 4 is formed at one end of the stator 1 adjoining the bearing ...

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Abstract

The invention relates to a stator-housing unit for an electric machine (10), wherein a stator (1) is connected to a housing (3). A surface deviation is formed on at least one partial surface of a contact surface between the stator (1) and the housing (3), in order to increase the friction coefficient between the stator and housing. According to the invention, the surface deviation is designed as aknurling (4) having preferably axis-parallel striae. Preferably 10% to 30% of the contact surface between the stator (1) and housing (3) is knurled. The invention further relates to a method for producing such a stator-housing-unit for an electric machine (10) and to an electric machine (10) having a stator-housing-unit according to the invention.

Description

technical field [0001] The invention relates to a stator housing unit for an electric machine, wherein the stator is connected to the housing. Background technique [0002] In order to fix the stator of the electric machine in the housing provided for the electric machine, it must be ensured that the torque originating from the rotor of the electric machine can be transmitted from the stator to the housing. In principle, the rotation of the rotor acts on the stator, which must therefore be force-transmittingly connected to the housing in order to prevent the stator from turning with the rotor. [0003] In this regard, patent document DE 10 2014 221 427 A1 relates to a device for fixing a stator in a housing, which has a housing and a stator arranged in the housing, wherein the housing has at least one Notch for fixing the stator at the housing. At least one slot is provided on the circumference of the stator, into which slot a recess of the housing protrudes. [0004] How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/18H02K5/04
CPCH02K1/185H02K5/04H02K5/15
Inventor 多米尼克·豪恩温弗里德·凯斯勒
Owner SIEMENS AG
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