STATOR OF ELECTRIC ROTATING MACHINE AND WINDING METHOD THEREOF

• US 20100066193A1
• Filed: 09/10/2009
• Published: 03/18/2010
• Est. Priority Date: 09/17/2008
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Noda, Tatsuya
• Granted Patent: US 8,198,779 B2
• Time in Patent Office: Days
• US Class Current: 310/187
• CPC Class Codes: H02K 1/148 Sectional cores H02K1/141 takes precedence
• CPC Class Codes: H02K 15/022 with salient poles or claw-shaped poles
• CPC Class Codes: H02K 15/095 by laying conductors around salient poles

Abstract

In a stator of an electric rotating machine such as a motor, there is provided with laminated 24 yoke pieces that form a yoke of circular shape when assembled and the yoke pieces are made rotatable relative to each other. Similarly laminated 24 teeth are each connected to each of the yoke pieces and a winding is wound on the teeth. In the stator, the teeth radially protrude inward in the yoke when the yoke pieces are assembled as the yoke such that some gap between adjacent teeth can be widened than others. Specifically, each of the yoke pieces has a first plate bored with a hole and a second plate formed with a projection and the plurality of the yoke pieces are rotatably connected through the holes and the projections to enable some gaps to be widened than others

Claims

1. A stator of an electric rotating machine, comprising:

a plurality of laminated yoke pieces that form a yoke of circular shape when assembled, the yoke pieces being made rotatable relative to each other;

a plurality of laminated teeth each connected to each of the yoke pieces,

and

a winding to be wound on the teeth;

wherein the teeth radially protrude inward in the yoke when the yoke pieces are assembled as the yoke such that a gap between adjacent teeth can be widened than others.

2. The stator according to claim 1, wherein each of the yoke pieces has a first plate bored with a hole and a second plate formed with a projection and the plurality of the yoke pieces are rotatably connected through the holes and the projections.

3. The stator according to claim 1, wherein each of the yoke pieces has a first plate bored with a non-round hole and a second plate formed with a projection and the plurality of the yoke pieces are rotatably connected through the non-round hole and the projection, and are displaceably connected by sliding the projection in the non-round hole.

4. The stator according to claim 2, wherein one of the first plate and the second plate is installed outermost in a laminated direction of each of the yoke pieces.

5. The stator according to claim 3, wherein one of the first plate and the second plate is installed outermost in a laminated direction of each of the yoke pieces.

6. A method of winding of a stator of an electric rotating machine having a yoke of circular shape and a plurality of teeth that are formed to radially protrude inward in the yoke and wound with a winding, comprising the steps of:

gap widening process that deforms the yoke to noncircular shape to widen a gap between adjacent teeth compared to others; and

winding process that insert the winding through the widened gap and wind the winding on the teeth.

7. The method according to claim 6, wherein the yoke is deformed to substantially triangular shape in the gap widening process.