Lens driving motor and elastic member of the same

Patent metadata

Field	Value
Publication number	US-8952579-B2
Application number	US-201313954410-A
Country	US
Kind code	B2
Filing date	Jul 30, 2013
Priority date	Dec 2, 2005
Publication date	Feb 10, 2015
Grant date	Feb 10, 2015

Abstract

Provided are a lens driving motor and an elastic member of the lens driving motor. The elastic member of a lens driving motor, the elastic member includes a first spring and a second spring. The second spring is different from the first spring and disposed together with the first spring on one side of a carrier to support the carrier. A first lead line of a coil and a first external power source are connected to the first spring, and a second lead line of the coil and a second external power source are connected to the second spring to supply power to the coil. Since the carrier can be assembled to other part after a (+) lead line and a (−) lead line of the coil are connected to the first and second springs, respectively, using solder, a process is simple and convenient.

First claim

What is claimed is:

1. A lens driving motor comprising:
a base;
a yoke disposed on the base;
a magnet disposed in the yoke;
a carrier disposed on the base and configured to move in a vertical direction;
a coil coupled to the carrier; and
a lower elastic member coupled to a lower portion of the carrier and configured to provide elastic force to the carrier,
wherein the lower elastic member comprises a first spring physically and a second spring physically separated from the first spring,
wherein the first spring includes a first outer portion and a first inner portion spaced apart from the first outer portion, and a first part of the first outer portion is connected to a first part of the first inner portion,
wherein the second spring includes a second outer portion and a second inner portion spaced apart from the second outer portion, and a first part of the second outer portion is connected to a first part of the second inner portion,
wherein the first outer portion includes a first terminal connected to a first external power source, the first terminal extending in a first outward direction,
wherein the second outer portion includes a second terminal connected to a second external power source, the second terminal extending in the first outward direction, and
wherein the first terminal is adjacent to the second terminal.

2. The lens driving motor according to claim 1 , further comprising a first connecting portion and a second connecting portion, wherein the first connecting portion is disposed between the first outer portion and the first inner portion, and connects the first part of the first outer portion to the first part of the first inner portion, and wherein the second connecting portion is disposed between the second outer portion and the second inner portion, and connects the first part of the second outer portion to the first part of the second inner portion.

3. The lens driving motor according to claim 1 , wherein the first external power source and the second external power source have different polarities from each other.

4. The lens driving motor according to claim 1 , wherein a portion of the first spring is overlapped with a portion of the second spring in a radial direction.

5. The lens driving motor according to claim 1 , wherein the first outer portion includes a hole and the second outer portion includes a hole.

6. The lens driving motor according to claim 1 , wherein the first inner portion includes a curved surface, wherein the second inner portion includes a curved surface, and wherein the curved surface of the first inner portion and the curved surface of the second inner portion are on a concentric circle.

7. The lens driving motor according to claim 1 , wherein the first spring and the second spring have an asymmetrical structure.

8. The lens driving motor according to claim 1 , wherein the first inner portion is connected to a first lead line of the coil, and wherein the second inner portion is connected to a second lead line of the coil.

9. The lens driving motor according to claim 1 , wherein the first inner portion and the second inner portion are coupled to the carrier.

10. The lens driving motor according to claim 1 , further comprising a spacer disposed on an upper surface of the yoke or under a lower surface of the yoke.

11. The lens driving motor according to claim 1 , wherein the lower elastic member is coupled to a lower side portion of the carrier.

12. The lens driving motor according to claim 1 , wherein the base includes a plate having an opening and a supporter protruded from a peripheral portion of the plate in a direction from the carrier to the base.

13. The lens driving motor according to claim 1 , wherein the first terminal and the second terminal are located at a side portion of the base.

14. The lens driving motor according to claim 1 , wherein the first terminal and the second terminal are physically separated from each other by a predetermined distance.

15. A digital apparatus comprising a lens driving motor:
wherein the lens driving motor comprises:
a base;
a yoke disposed on the base;
a magnet disposed in the yoke;
a carrier disposed on the base and configured to move in a vertical direction;
a coil coupled to the carrier; and
a lower elastic member coupled to a lower portion of the carrier and configured to provide elastic force to the carrier,
wherein the lower elastic member comprises a first spring and a second spring physically separated from the first spring,
wherein the first spring includes a first outer portion and a first inner portion spaced apart from the first outer portion, and a first part of the first outer portion is connected to a first part of the first inner portion,
wherein the second spring includes a second outer portion and a second inner portion spaced apart from the second outer portion, and a first part of the second outer portion is connected to a first part of the second inner portion,
wherein the first outer portion includes a first terminal connected to a first external power source, the first terminal extending in a first outward direction,
wherein the second outer portion includes a second terminal connected to a second external power source, the second terminal extending in the first outward direction, and
wherein the first terminal is adjacent to the second terminal.

16. The digital apparatus according to claim 15 , further comprising a first connecting portion and a second connecting portion, wherein the first connecting portion is disposed between the first outer portion and the first inner portion, and connects the first part of the first outer portion to the first part of the first inner portion, and wherein the second connecting portion is disposed between the second outer portion and the second inner portion, and connects the first part of the second outer portion to the first part of the second inner portion.

17. The digital apparatus according to claim 15 , wherein the first external power source and the second external power source have different polarities from each other.

18. The digital apparatus according to claim 15 , further comprising a spacer disposed on an upper surface of the yoke or under a lower surface of the yoke.

19. The digital apparatus according to claim 15 , wherein the lower elastic member is coupled to a lower side portion of the carrier.

20. The digital apparatus according to claim 15 , wherein the first terminal and the second terminal are located at a side portion of the base.

21. The digital apparatus according to claim 15 , wherein the first terminal and the second terminal are physically separated from each other by a predetermined distance.

22. A lens driving motor comprising:
a base;
a yoke disposed on the base;
a magnet disposed in the yoke;
a carrier disposed on the base and configured to move in a vertical direction;
a coil coupled to the carrier; and
a lower elastic member coupled to a lower portion of the carrier and configured to provide elastic force to the carrier;
wherein the lower elastic member comprises a first spring and a second spring physically separated from the first spring;
wherein the first spring includes a first outer portion and a first inner portion spaced apart from the first outer portion, and a first part of the first outer portion is connected to a first part of the first inner portion;
wherein the second spring includes a second outer portion and a second inner portion spaced apart f

Assignees

• Lg Innotek Co Ltd

Inventors

• Jung Soo Jin

Classifications

• G02B7/08 Primary

  adapted to co-operate with a remote control mechanism · CPC title

• G02B7/023 Primary

  permitting adjustment · CPC title

• H02K41/0356

  moving along a straight path · CPC title

• H02K41/035

  DC motors; Unipolar motors · CPC title

• H02K33/02 Primary

  with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs · CPC title