Lens driving motor and elastic member of the same

Patent metadata

Field	Value
Publication number	US-9229190-B2
Application number	US-201414469193-A
Country	US
Kind code	B2
Filing date	Aug 26, 2014
Priority date	Dec 2, 2005
Publication date	Jan 5, 2016
Grant date	Jan 5, 2016

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 motor for driving a lens, the motor comprising:
a base;
a yoke disposed on the base;
a carrier disposed in the yoke and configured to move in a vertical direction;
a magnet disposed at an inner surface of the yoke;
a coil disposed at an outer peripheral surface of the carrier while facing the magnet;
an upper elastic member coupled to an upper portion of the carrier; and
a lower elastic member coupled to a lower portion of the carrier,
wherein the lower elastic member comprises a first spring and a second spring separated from the first spring,
wherein the first spring and the second spring each comprises an outer section, an inner section, and a connection section connecting the inner section and the outer section,
wherein the coil includes a first end portion and a second end portion,
wherein a portion of the inner section of the first spring is soldered to the first end portion, and
wherein a portion of the inner section of the second spring is soldered to the second end portion.

2. The motor according to claim 1 , wherein a portion of the inner section of the first spring, including the portion that is soldered to the first end portion of the coil, is protruded from the inner section of the first spring toward the outer section of the first spring, and
wherein a portion of the inner section of the second spring, including the portion that is soldered to the second end portion of the coil, is protruded from the inner section of the second spring toward the outer section of the second spring.

3. The motor according to claim 1 , wherein a portion of the inner section of the first spring, including the portion that is soldered to the first end portion of the coil, is extended in a first outward direction from the inner section of the first spring, and
wherein a portion of the inner section of the second spring, including the portion that is soldered to the second end portion of the coil, is extended in a second outward direction from the inner section of the second spring.

4. The motor according to claim 3 , wherein the first outward direction is the same as the second outward direction.

5. The motor according to claim 1 , wherein a portion of the inner section of the first spring, including the portion that is soldered to the first end portion of the coil, is extended from the inner section of the first spring toward a first edge of the base, and
wherein a portion of the inner section of the second spring, including the portion that is soldered to the second end portion of the coil, is extended from the inner section of the second spring toward a second edge of the base.

6. The motor according to claim 5 , wherein the first edge and the second edge are located at the same side surface of the base.

7. The motor according to claim 1 , wherein the portion of the inner section of the first spring that is soldered to the first end portion of the coil is disposed between the coil and the magnet when viewed from the top, such that the portion of the inner section of the first spring that is soldered to the first end portion of the coil is disposed between the coil and the magnet in a horizontal direction, and
wherein the portion of the inner section of the second spring the portion that is soldered to the second end portion of the coil is disposed between the coil and the magnet when viewed from the top.

8. The motor according to claim 1 , wherein a portion of the connection section of the first spring is disposed between the coil and the magnet when viewed from the top, such that the portion of the connection section of the first spring is disposed between the coil and the magnet in a horizontal direction, and
wherein a portion of the connection section of the second spring is disposed between the coil and the magnet when viewed from the top.

9. The motor according to claim 8 , wherein a first end portion of the first spring faces a first end portion of the second spring, and
wherein a second end portion of the first spring faces a second end portion of the second spring.

10. The motor according to claim 1 , wherein the outer section of the first spring includes a first terminal configured to be connected to a first external power source, and
wherein the outer section of the second spring includes a second terminal configured to be connected to a second external power source.

11. The motor according to claim 10 , wherein the first terminal is adjacent to the second terminal.

12. The motor according to claim 10 , wherein the first terminal and the second terminal are adjacent to a side surface of the base.

13. The motor according to claim 10 , wherein the first terminal extends in a first outward direction, and
wherein the second terminal extends in a second outward direction.

14. The motor according to claim 13 , wherein the first outward direction is the same as the second outward direction.

15. The motor according to claim 10 , wherein the first terminal and the second terminal are both within a boundary of the base when viewed from the top, such that the first terminal and the second terminal are both within the boundary of the base in a horizontal direction.

16. The motor according to claim 10 , wherein the first terminal and the second terminal are disposed at a side portion of the base.

17. The motor according to claim 16 , wherein the first terminal and the second terminal are spaced apart from each other.

18. The motor according to claim 1 , wherein the first spring and the second spring are disposed on a same horizontal plane.

19. The motor according to claim 1 , wherein the inner section of the first spring and the inner section of the second spring are coupled to the carrier.

20. The motor according to claim 1 , further comprising a first spacer disposed on an upper surface of the yoke, a second spacer disposed under a lower surface of the yoke, or both.

21. The motor according to claim 1 , wherein a portion of the inner section of the first spring, including the portion that is soldered to the first end portion of the coil, is disposed closest to a side surface of the base among the inner section of the first spring when viewed from the top, such that said portion of the inner section of the first spring is disposed closest to the side surface of the base in a horizontal direction.

22. The motor according to claim 1 , wherein the first spring includes a first protrusion protruded from the inner section of the first spring toward the outer section of the first spring,
wherein the second spring includes a second protrusion protruded from the inner section of the second spring toward the outer section of the second spring,
wherein the first protrusion includes the portion of the inner section of the first spring that is soldered to the first end portion of the coil, and
wherein the second protrusion includes the portion of the inner section of the second spring that is soldered to the second end portion of the coil.

23. A camera comprising a lens and the motor for driving the lens according to claim 1 .

24. A digital apparatus comprising the camera according to claim 23 .

Assignees

• Lg Innotek Co Ltd

Inventors

• Jung Soo Jin

Classifications

• H02K41/0356

  moving along a straight path · CPC title

• G02B7/04

  with mechanism for focusing or varying magnification · CPC title

• H02K41/035

  DC motors; Unipolar motors · CPC title

• G02B7/08 Primary

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

• G02B7/023 Primary

  permitting adjustment · CPC title