US 2009/0267442 A1Published application

Stator assembly

AssigneeMinebea Co., Ltd.

InventorsTakayuki Yamawaki, Yuzuru Suzuki

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Abstract

A stator assembly is provided and includes a laminated core and a one-part insulator having cover walls for covering edges of the laminated core, wherein first projections and a second projection both having a height smaller than the difference between the height of the cover walls and the thickness of the laminated core are formed on one side surface of the insulator in such a manner as to make contact with a part of one axial end side surface of the laminated core, whereby a gap which corresponds to the projection distance of the first and second projections and which serves as a clearance space for chips scraped by the edges of the laminated core from the surfaces of the cover walls is provided between the insulator and the laminated core, resulting in ensuring that the insulator is snap-fitted on the laminated core in good shape.

Claims3

Dependent claims

A stator assembly comprising:

a laminated core comprising a plurality of salient poles;
and
an insulator attached on the laminated core from only one axial end side of the laminated core, the insulator comprising:
a plate portion having an outer shape corresponding to a projected planar geometry of the laminated core;
a plurality of cover walls for covering the salient poles of the laminated core, the cover walls having a height greater than a thickness of the laminated core and disposed on a side surface of the plate portion along an outer shape line of the plate portion;
and
at least one projection which has a height smaller than a difference between the height of the cover walls and the thickness of the laminated core, and which is disposed on the side surface of the plate portion having the cover walls and is located to make contact with a part of a surface of the one axial end side of the laminated core.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/320,412Filed 26 Jan 2009
Priority: JP 2008-11767528 Apr 2008
Published: 29 Oct 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H02K 3/522
Applicable to stators only: for generally annular cores with salient poles
H02K 1/187
Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures: to inner stators
H02K 3/325
Windings characterised by the shape, form or construction of the insulation: for windings on salient poles, such as claw-shaped poles
H02K
Dynamo-electric machines

Family

US 7,880,360 B2Related patent
US 2009/0267442 A1This patent

From the US filing history. Foreign family members aren’t listed.

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