BUS BAR AND MOTOR INCLUDING THE SAME

• US 20150076944A1
• Filed: 09/16/2014
• Published: 03/19/2015
• Est. Priority Date: 09/16/2013
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Kim, Seong Jin, Kim, Jinho, Park, Chang Hyun, SHIM, Woo seob, Park, Kyung Sang
• Granted Patent: US 9,735,639 B2
• Time in Patent Office: Days
• US Class Current: 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 3/28 Layout of windings or of connections between windings windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32
• CPC Class Codes: H02K 3/522 for generally annular cores with salient poles
• CPC Class Codes: Y02P 80/30 Reducing waste in manufacturing processes; Calculations of released waste quantities

Abstract

A bus bar includes an insulator and a plurality of terminals inserted into the insulator and connected to the coil of a stator. The central axes of virtual circles extended from the inner circumferential surfaces of the plurality of terminals are differently disposed. The insulator may have a simple structure because the terminals having the same shape are assembled. The productivity of an assembly process can be improved.

Claims

1. A bus bar for a stator of a motor, the bus bar comprising:

an insulator; and

a plurality of terminals disposed in the insulator, the plurality of terminals having curvature,

wherein central axes of curvature for the plurality of terminals are different.

2. The bus bar of claim 1, wherein:

each of the plurality of terminals has a partial ring shape, and

central axes of a plurality of virtual circles extended from the partial rings are offset each other.

3. The bus bar of claim 1, wherein:

the plurality of terminals comprises a plurality of power terminals connected to a three-phase power source and a neutral terminal, and

a central axis of virtual circle connecting central axes of a plurality of virtual circles extended from the plurality of power terminals is identical with a central axis of a virtual circle extended from the neutral terminal.

4. The bus bar of claim 3, wherein an angle between the central axes of the plurality of virtual circles extended from the plurality of power terminals is identical around the central axis of the virtual circle extended from the neutral terminal.

5. The bus bar of claim 4, wherein the angle between the central axes of the plurality of virtual circles extended from the plurality of power terminals is 120°

.

6. The bus bar of claim 3, wherein an interval between a first end of each of the plurality of power terminals and a virtual line extended from the neutral terminal is different from an interval between a second end of each of the plurality of power terminals and the virtual line extended from the neutral terminal.

7. The bus bar of claim 3, wherein each of the plurality of power terminals comprises:

a first power terminal connected to the three-phase power source;

a second power terminal connected to the three-phase power source; and

a third power terminal connected to the three-phase power source.

8. The bus bar of claim 7, wherein:

an inside surface of a second end of the first power terminal faces an outside surface of the second power terminal, and

an outside surface of a first end of the first power terminal faces an inside surface of the third power terminal.

9. The bus bar of claim 3, wherein the plurality of power terminals has an identical shape.

10. The bus bar of claim 3, wherein each of the plurality of power terminals comprises:

a first connection member having specific curvature in a length direction;

at least one power connection terminal combined with the first connection member and connected to any one of phases of the three-phase power source; and

at least one terminal end combined with the power connection terminal and connected to a coil wound on the stator.

11. The bus bar of claim 10, wherein the power connection terminal protrudes in an axis direction based on the first connection member.

12. The bus bar of claim 10, wherein a point at which the terminal end is connected to the power connection terminal is higher than a top surface of the first connection member in an axis direction.

13. The bus bar of claim 10, wherein the terminal end protrudes in a direction vertical to an axis direction.

14. The bus bar of claim 3, wherein the neutral terminal comprises:

a second connection member having specific curvature in a length direction; and

at least one terminal end combined with the second connection member and connected to a coil wound on the stator,

wherein the second connection member is longer than the first connection member.

15. A motor, comprising:

a stator configured to comprise a stator core and a coil wound on the stator core; and

a bus bar combined with the stator,

wherein the bus bar comprises an insulator and a plurality of terminals disposed in the insulator and connected to the coil, and

central axes of virtual circles extended from the plurality of terminals are different.

16. The motor of claim 15, wherein the plurality of terminals comprises:

a plurality of power terminals connected to a three-phase power source; and

a neutral terminal.

17. The motor of claim 16, wherein a central axis of virtual circle connecting central axes of a plurality of virtual circles extended from the plurality of power terminals is identical with a central axis of a virtual circle extended from the neutral terminal.

18. The motor of claim 17, wherein an angle between the central axes of the plurality of virtual circles extended from the plurality of power terminals is identical around the central axis of the virtual circle extended from the neutral terminal.

19. The motor of claim 16, wherein an interval between a first end of each of the plurality of power terminals and a virtual line extended from the neutral terminal is different from an interval between a second end of each of the plurality of power terminals and the virtual line extended from the neutral terminal.

20. The motor of claim 16, wherein the plurality of power terminals has an identical shape.