Stator assembly, motor having the same and method of manufacturing the same

• US 10,381,892 B2
• Filed: 12/29/2015
• Issued: 08/13/2019
• Est. Priority Date: 12/29/2014
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Kim, Chan Seok
• Primary Examiner(s): Mullins, Burton S
• Application Number:
  US14/982,632
• Publication Number:
  US 20160190888A1
• Time in Patent Office: 1,323 Days
• Field of Search: 310 43, 310 71
• CPC Class Codes: H02K 2203/09 Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
• CPC Class Codes: H02K 3/50 Fastening of winding heads, equalising connectors, or connections thereto
• CPC Class Codes: H02K 3/522 for generally annular cores with salient poles

Abstract

A stator assembly, a motor having the same, and a method of manufacturing a stator assembly are provided. The stator assembly includes a stator core, coils wound around the stator core, and a stator body including a first power terminal, a neutral terminal configured to connect the coils and connected to the first power terminal, and a bearing, wherein each of a connection terminal of the first power terminal and a hole of the bearing is exposed externally, thereby providing an advantage for simplifying an assembly process by reduction of the number of components and simplification of a structure. Further, a useless space is removed by the above process, thereby providing an advantage for reducing the size of a product and reducing the weight thereof.

Claims

1. A stator assembly comprising:

a stator core;

an insulator mounted on the stator core;

coils wound around the stator core to generate a rotating magnetic field; and

a stator body including a first power terminal, a plurality of second power terminals, a neutral terminal configured to connect to the coils and connect to the first power terminal, and a bearing, wherein each of the plurality of second power terminals comprises a central portion extending radially and two end portions connected with each end of the central portion wherein the two end portions extend circumferentially in opposite directions, at least one terminal of the plurality of second power terminals being connected to connection terminals of the first power terminal and at least one terminal of the plurality of second power terminals being connected to external power;

wherein the stator body is formed by performing molding, so that the coils, the first power terminal, the neutral terminal, the stator core, and the bearing are integrally included in the stator body formed by the molding so as to be a single device, wherein the connection terminals of the first power terminal and a hole of the bearing are exposed externally, and

wherein the insulator includes a first slot into which the first power terminal is inserted and a second slot into which the neutral terminal is inserted, and wherein a length of the first slot is smaller than a length of the second slot.

2. The stator assembly of claim 1, wherein the coils are wound around the insulator.

3. The stator assembly of claim 1, wherein the connection terminals of the first power terminal are exposed on an upper surface of the stator body.

4. The stator assembly of claim 3, wherein the stator body is formed by molding so that a hollow portion in communication with the hole of the bearing is formed.

5. The stator assembly of claim 3, wherein each of the plurality of second power terminals connected to the first power terminal is disposed on the upper surface of the stator body.

6. The stator assembly of claim 5, wherein the stator body is formed by molding so that a hollow portion in communication with the hole of the bearing is formed.

7. The stator assembly of claim 1, wherein the stator body is formed by molding so that a hollow portion in communication with the hole of the bearing is formed.

8. The stator assembly of claim 2, wherein the stator body is formed by molding so that a hollow portion in communication with the hole of the bearing is formed.

9. The stator assembly of claim 1, wherein the plurality of second power terminals includes at least two terminals connected to the first power terminal and at least one terminal connected to external power.

10. A motor comprising:

a stator assembly including a stator core, an insulator mounted on the stator core;

coils wound around the stator core, a neutral terminal configured to connect a first power terminal and the coils, a plurality of second power terminals, and a bearing,

wherein each of the plurality of second power terminals comprises a central portion extending radially and two end portions connected with each end of the central portion wherein the two end portions extend circumferentially in opposite directions, at least one terminal of the plurality of second power terminals being connected to connection terminals of the first power terminal and at least one terminal of the plurality of second power terminals being connected to external power; and

wherein a stator body is formed by performing molding, so that the coils, the first power terminal, the neutral terminal, the stator core, and the bearing are integrally included in the stator body formed by the molding so as to be a single device, wherein the connection terminals of the first power terminal and a hole of the bearing are exposed externally,

a rotor disposed on an inner side of the stator assembly; and

a shaft coupled to the rotor,

wherein the insulator includes a first slot into which the first power terminal is inserted and a second slot into which the neutral terminal is inserted, and wherein a length of the first slot is smaller than a length of the second slot.

11. The motor of the claim 10, wherein the coils are wound around the insulator.

12. The motor of the claim 10, wherein the connection terminals of the first power terminal are exposed on an upper surface of the stator body.

13. The motor of the claim 12, wherein each of the second power terminals connected to the first power terminal is disposed on the upper surface of the stator body.