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Stator tooth arrangement

A technology of stator teeth and components, applied in the direction of electric components, electrical components, magnetic circuit static parts, etc., can solve the problems of weld fracture and deformation prevention, and achieve the effect of preventing position changes and reducing manufacturing costs

Pending Publication Date: 2021-04-09
ROLLS ROYCE DEUT LTD & CO KG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this has the disadvantage that, possibly as a result of high mechanical stresses, the weld seam can break and thus ultimately does not prevent deformation

Method used

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Embodiment Construction

[0037] It should be noted that terms such as "axial", "radial", "tangential", etc. relate to the axes used in the corresponding figures or in the correspondingly described examples. In other words, the directions (axial, radial, tangential) always refer to the axis of rotation of the rotor and thus to the corresponding axis of symmetry of the stator. Here, "axial" describes a direction parallel to the axis, "radial" describes a direction perpendicular to the axis, towards or also away from the axis, and "tangential" is a direction that It is directed circularly around the axis at a constant radial distance from the axis and at a constant axial position. The expression "in the peripheral direction" can be equated with "tangential".

[0038] When referring to a surface, for example a cross section, the terms "axial", "radial", "tangential", etc. describe the orientation of a vector normal to a surface, that is to say a vector lying perpendicular to the surface in question.

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Abstract

The disclosure relates to a stator tooth arrangement for a stator of an electric machine. The stator tooth arrangement includes a multiplicity of individual teeth, wherein the teeth are arranged in series when viewed in a tangential direction. Individual teeth of the stator tooth arrangement arranged adjacent to one another are connected positively to one another at their tooth roots by a connecting device of the stator tooth arrangement, with the result that, even under considerable radial loading, (e.g., shrink-fitting in the context of the production process of the machine), the stator tooth arrangement retains its very largely round shape.

Description

technical field [0001] The invention relates to an electric machine which can be used, for example, as an electric motor or as a generator for a drive system. The object of the invention is in particular the stator of such an electric machine and here precisely the stator teeth arranged in or on the stator. Background technique [0002] When assembling the electric machine, the stator rings are typically shrunk into the stator housing. Especially in electrical machines in which the rotor is constructed as an inner rotating part and the stator is assembled from a plurality of individual teeth, the problem arises during shrinkage that during the retraction of the stator into the machine housing the stator rings can be deformation due to the error chain of a plurality of individual stator teeth aligned with one another. [0003] The pole shoes of the typically elliptically deformed stator ring must therefore be polished so that the radial inner side of the stator ring assumes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/12
CPCH02K1/12H02K1/148
Inventor S·瓦尔特
Owner ROLLS ROYCE DEUT LTD & CO KG
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