Motor

Patent metadata

Field	Value
Publication number	US-10873240-B2
Application number	US-201815948094-A
Country	US
Kind code	B2
Filing date	Apr 9, 2018
Priority date	Jun 15, 2017
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

Disclosed herein is a motor including a power connector capable of preventing current leakage to the outer case and structural interference with the outer case. The motor includes a stator provided with an insulator, a rotor configured to be rotated against the stator, a power connection portion provided in the insulator, and configured to support an end of a coil wound around the stator and configured to accommodate a mag-mate terminal, and a power connector coupled to the power connection portion to connect an external power source to the coil, wherein the power connector includes a lead wire, a fork terminal coupled to an end of the lead wire to electrically connect the lead wire to the coil and a housing configured to accommodate the end of the lead wire and the fork terminal and coupled to the power connection portion.

First claim

What is claimed is:

1. A motor comprising:
a stator provided with an insulator;
a rotor configured to be rotated against the stator;
a power connection portion provided in the insulator, and configured to support an end of a coil wound around the stator and configured to accommodate a terminal; and
a power connector coupled to the power connection portion to connect an external power source to the coil,
wherein the power connector comprises:
a lead wire;
a fork terminal coupled to an end of the lead wire to electrically connect the lead wire to the coil; and
a housing configured to accommodate the end of the lead wire and the fork terminal and coupled to the power connection portion,

wherein the end of the lead wire is extended in a direction parallel to a rotation axis of the rotor, and
wherein the fork terminal is extended from the end of the lead wire to a direction parallel to the end of the lead wire.

2. The motor of claim 1 , wherein the fork terminal comprises:
a clamping portion configured to compress the end of the lead wire; and
a fork portion extended downward from the clamping portion and configured to be in contact with the terminal.

3. The motor of claim 2 , wherein the terminal comprises:
a coil insertion portion incised to remove a covering of the coil upon being accommodated in the power connection portion, and
an elastic contact portion configured to be in elastic contact with the fork portion.

4. The motor of claim 1 , wherein the housing is formed by an insert injection in a state in which the fork terminal and the end of the lead wire are coupled to each other.

5. The motor of claim 1 , wherein:
the power connection portion comprises a coupling protrusion, and
the housing comprises a coupling hole into which the coupling protrusion is pressed-fitted.

6. The motor of claim 1 , wherein:
the power connection portion comprises a pair of guide portions protruding from opposite side surfaces of the power connection portion to a lateral side, and
the housing comprises a guide groove into which the pair of guide portions are inserted.

7. The motor of claim 1 , wherein a width of a yoke of the stator is less than approximately 30 mm.

8. The motor of claim 1 , wherein a distance between the end of the coil and an inner surface of an outer case accommodating the stator is less than approximately 5 mm.

9. The motor of claim 1 , wherein the housing comprises a cover configured to cover the end of the coil to prevent the end of the coil from being exposed to the outside.

10. The motor of claim 9 , wherein a distance between an outer surface of the cover and an inner surface of an outer case accommodating the stator is equal to or greater than 0.5 mm.

11. The motor of claim 9 , wherein a thickness of the cover is equal to or greater than 0.5 mm.

12. A motor for a compressor comprising:
a power connection portion configured to accommodate an end of a coil wound around a stator and a terminal, and
a power connector coupled to the power connection portion to supply power to the coil,
wherein the power connector comprises:
a lead wire;
a fork terminal coupled to compress an end of the lead wire and configured to be physically and electrically connected to the terminal; and
a housing configured to accommodate the end of the lead wire and the fork terminal therein and configured to cover the coil to prevent the end of the coil from being exposed to the outside,

wherein the end of the lead wire is extended in a direction parallel to a rotation axis of a rotor, and
wherein the fork terminal is extended form the end of the lead wire to a direction parallel to the end of the lead wire.

13. The motor of claim 12 , wherein the housing is formed by an insert injection in a state in which the end of the lead wire and the fork terminal are compressed.

14. The motor of claim 12 , wherein the fork terminal comprises:
a clamping portion configured to compress the end of the lead wire; and
a fork portion extended from the clamping portion to a direction in which the power connector is coupled to the power connection portion, and configured to be in contact with the terminal.

15. The motor of claim 14 , wherein the terminal comprises:
a coil insertion portion incised to remove a covering of the coil upon being accommodated in the power connection portion, and
an elastic contact portion configured to be in elastic contact with the fork portion.

16. The motor of claim 12 , wherein:
the power connection portion comprises a coupling protrusion, and
the housing comprises a coupling hole into which the coupling protrusion is pressed-fitted.

17. The motor of claim 12 , wherein:
the power connection portion comprises a pair of guide portions protruding from opposite side surfaces of the power connection portion to a lateral side, and
the housing comprises a guide groove into which the pair of guide portions are inserted.

18. The motor of claim 12 , wherein a distance between the end of the coil and an inner surface of an outer case accommodating the stator is less than approximately 5 mm.

19. The motor of claim 12 , wherein a distance between an outer surface of the housing and an inner surface of an outer case accommodating the stator is equal to or greater than 0.5 mm.

20. A motor comprising
a stator around which a coil is wound, and provided with an insulator;
a rotor provided inside of the stator and configured to be rotated by interacting with the stator;
a power connection portion provided in one side the insulator, and provided with a coil support configured to support the coil and a terminal accommodation portion configured to accommodate the terminal; and
a power connector coupled to the power connection portion to connect an external power source to the coil,
wherein the power connector comprises:
a lead wire; and
a fork terminal provided with a clamping portion coupled to an end of the lead wire and a fork portion coupled to the terminal, wherein the clamping portion and the fork portion are arranged on top and bottom,

wherein the end of the lead wire is extended in a direction parallel to a rotation axis of the rotor, and
wherein the fork terminal is extended from the end of the lead wire to a direction parallel to the end of the lead wire.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Hwang Kwang-Yeol
• Choi Jong Hyun
• Hwang In Cheol

Classifications

• H02K2213/03

  Machines characterised by numerical values, ranges, mathematical expressions or similar information · CPC title

• H02K2203/06

  Machines characterised by the wiring leads, i.e. conducting wires for connecting the winding terminations · CPC title

• H02K5/225 Primary

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title

• H02K3/521 Primary

  applicable to stators only · CPC title

• H02K1/146

  consisting of a generally annular yoke with salient poles · CPC title