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Electrical machine with a spring element for holding a stator in a housing

A technology of spring elements and shells, applied in electrical components, electromechanical devices, electric components, etc., can solve problems such as shell rupture

Pending Publication Date: 2021-01-08
ROLLS ROYCE DEUT LTD & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, for example, the aluminum housing shrinks more strongly than the stator, which leads to increased mechanical stresses in the structural part and can lead to rupture of the housing.

Method used

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  • Electrical machine with a spring element for holding a stator in a housing
  • Electrical machine with a spring element for holding a stator in a housing

Examples

Experimental program
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Embodiment Construction

[0026] In the figures, identical or functionally identical elements are provided with the same reference symbols.

[0027] figure 1 A diagram of a detail of the electric machine 1 is shown. The electric machine 1 includes a housing 2 which can be made of metal, for example aluminum or steel. The housing 2 can be substantially hollow-cylindrical. Inside the housing 2 there is a stator 3 which can be produced from electrical sheets. The stator 3 has teeth 4 , one of which is shown here.

[0028] During operation of the electric machine 1 , the torque acting on the stator 3 should be compensated mechanically. For this purpose, the stator 3 should be fastened on the housing 2 so that it remains in its position or initial installation position or is not moved in the peripheral direction U of the electric machine 1 . For this purpose, the electric machine 1 has an opening 5 which extends in the axial direction a of the electric machine 1 . The opening 5 now has a circular cros...

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PUM

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Abstract

The invention relates to an electrical machine (1) comprising: a housing (2) and a stator (3) which is arranged at least in some regions in the housing (2) and which is held on the housing (2), the electrical machine (1) having an opening (5) which extends in an axial direction (a) of the electrical machine (1), the opening (5) being formed in the housing (2) and in the stator (3), and the electrical machine (1) having a spring element (6), which is arranged within the opening (5) in order to hold the stator (3) on the housing (2).

Description

technical field [0001] The invention relates to an electric machine comprising a housing and a stator which is at least partially arranged in the housing and which is held on the housing. Furthermore, the invention relates to a method for producing such an electric machine. Background technique [0002] Currently, the focus is on electric machines that can be used, for example, as drives in vehicles. Preferably, such an electric machine can be applied as a drive for an electric aircraft. In electric machines there is always a joint connection between the outer housing or housing housing and the stator or stator plate pack. The stator is usually made of a ferromagnetic material, such as so-called transformer laminations, and the housing is often made of aluminum or steel. [0003] It is known from the prior art to form a non-positive connection between the stator and the housing. In force-fit connections, shrink fit is often applied. Non-positive connections are often pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/18
CPCH02K1/185H02K1/16
Inventor F·拉特韦森R·戈拉吉
Owner ROLLS ROYCE DEUT LTD & CO KG