Stator Of Motor Having Insulation Structure For Separation Of Stator Winding Groups

• US 20160268862A1
• Filed: 05/26/2016
• Published: 09/15/2016
• Est. Priority Date: 08/16/2011
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Kim, Hyunseop, Kim, Byungyong
• Granted Patent: US 9,973,052 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02K 1/14 Stator cores with salient poles
• CPC Class Codes: H02K 3/32 Windings characterised by the shape, form or construction of the insulation
• CPC Class Codes: H02K 3/325 for windings on salient poles, such as claw-shaped poles
• CPC Class Codes: H02K 3/34 between conductors or between conductor and core, e.g. slot insulation
• CPC Class Codes: H02K 3/345 between conductor and core, e.g. slot insulation

Abstract

Disclosed is a stator of an EPS motor, the stator including a stator core including a plurality of teeth protrusively formed toward a center of an inner circumferential surface, a plurality of coils wound on the teeth at a predetermined counts, an insulator coupled to an upper surface and a bottom surface of the stator core to insulate the coil from the stator core, and an insulation tube situated nearest to a coil wound on an adjacent stator core and inserted into a coil wound on an outmost side of the teeth.

Claims

1. A stator of a motor, the stator comprising:

a stator core including a first tooth and a second tooth spaced from the first tooth;

a coil unit including a first coil wound on the first tooth and a second coil wound on the second tooth; and

a bus bar coupled to an upper side of the stator core;

a terminal disposed at the bus bar and electrically connected with the coil unit; and

an insulation portion protruded from the bus bar,

wherein at least of a portion of the insulation portion is disposed between the first coil and the second coil to insulate the first coil from the second coil.

2. The stator of claim 1, wherein the insulation portion has a shape of a flat plate.

3. The stator of claim 1, wherein the insulation portion has a thickness smaller than a gap among the first and the second coils.

4. The stator of claim 1, wherein the insulation portion has a length corresponding to a length of the stator core.

5. The stator of claim 1, wherein the insulation portion is injection-molded along with the bus bar in the same resin material.

6. The stator of claim 1, wherein the insulation portion is provided in the number corresponding to that of the coils wound on the stator core.

7. The stator of claim 1, wherein the stator core further including a first spilt core formed with the first tooth and a second spilt core formed with the second tooth,

wherein the first spilt core includes a body coupled to the second spilt core, and

wherein the first tooth is inwardly protruded from the body.

8. The stator of claim 1, further comprising:

an insulator coupled to the stator core to insulate the coil from the stator core.

9. The stator of claim 8, wherein the insulator includes an upper insulation portion coupled to an upper portion of the stator core and a lower insulation portion coupled to a lower portion of the stator core.

10. A motor, the motor comprising:

a stator core including a first tooth and a second tooth spaced from the first tooth;

a coil unit including a first coil wound on the first tooth and a second coil wound on the second tooth; and

a bus bar coupled to an upper side of the stator core;

a terminal disposed at the bus bar and electrically connected with the coil unit; and

an insulation portion protruded from the bus bar,

wherein at least of a portion of the insulation portion is disposed between the first coil and the second coil to insulate the first coil from the second coil.