Stator for an electric motor

• US 6,924,570 B2
• Filed: 10/20/2004
• Issued: 08/02/2005
• Est. Priority Date: 10/22/2003
• Status: Active Grant

• Current Assignee: Brose Fahrzeugteile GmbH & Company KG Wã¼Rzburg
• Original Assignee: Siemens AG
• Inventors: De Filippis, Pietro, Redelberger, Harald, Schulz, Hermann, Gilly, Joachim
• Primary Examiner(s): LE, DANG D
• Application Number:
  US10/968,155
• Publication Number:
  US 20050088049A1
• Time in Patent Office: 286 Days
• Field of Search: 310/71, 310/260, 310/254, 310/258, 310/259
• US Class Current: 310/71
• CPC Class Codes: H02K 3/522 for generally annular cores with salient poles

Abstract

The invention relates to a stator for an electric motor. Said stator has an annular stator package having a plurality of stator teeth. An annular interconnection unit is located on the end face of said stator package. Said annular interconnection contains diverting elements. The interconnection unit has a support component which is provided with a cavity and has slots. Provided in said cavity are a multiplicity of mutually electrically insulated connector rings each having contacting elements routed externally through said slots.

Claims

1. Stator for an electric motor comprising:

an annular stator package having a plurality of inwardly extending stator teeth with an individual tooth winding;

an annular interconnection unit located on an end face of the stator package and provided on its end face distant from the stator package with diverting elements, the annular interconnection unit further comprising an electrically non-conducting support component having a cavity wherein a plurality of mutually electrically insulated connector rings are arranged, each of the rings including a contacting element,

which is externally routed through slots in the support component; and

wherein

the support component has inwardly extending winding support elements which directly adjoin the stator teeth, are embodied as slot-insulating elements, and have extrusions preventing the individual tooth windings from slipping off a respective stator tooth.

2. The stator according to claim 1, wherein the support component is a plastic molded component having partitions that project into the cavity, the partitions arranged to provide electric insulation to the connector rings.

3. The stator according to claim 2, wherein each connector ring comprises first contacting elements arranged to provide internal interconnecting windings mounted onto the stator teeth.

4. The stator according to claim 1, wherein each connector ring comprises first contacting elements arranged to provide internal interconnecting windings mounted onto the stator teeth.

5. The stator according to claim 4, wherein an end of a winding is routed via one of the diverting elements so as to form a start of an adjacent winding.

6. The stator according to claim 5, wherein each diverting element is assigned one of the first contacting elements routed externally through a slot of the support component, a winding wire routed via the diverting element is routed via the first contacting element assigned to the diverting element, and electrical contacting of the first contacting element with electrical conductor located inside the wire is produced by a resistance-welding process.

7. The stator according to claim 6, wherein the first contacting elements comprise hooks.

8. The stator according to claim 5, wherein the first contacting elements comprise hooks.

9. The stator according to claim 4, wherein the first contacting elements comprise hooks.

10. The stator according to claim 4, wherein each connector ring comprises a second contacting element arranged to interconnect with an external electronic system or an external power supply.

11. The stator according to claim 10, wherein the annular interconnection unit is provided on its end facing the stator package with a cover made of non-conducting material.

12. The stator according to claim 1, wherein each connector ring comprises a second contacting element arranged to interconnect with an external electronic system or an external power supply.

13. The stator according to claim 12, wherein the second contacting elements are connector tabs.

14. The stator according to claim 1, wherein the annular interconnection unit is provided on its end face the stator package with a cover made of non-conducting material.

15. The stator according to claim 1, wherein on an end face distant from the interconnection unit an insulating ring or a second interconnection unit is arranged.

16. The stator according to claim 1, wherein on an end face distant from the interconnection unit an insulating ring or a second interconnection unit is arranged.