Voice coil motor

Patent metadata

Field	Value
Publication number	US-2025180963-A1
Application number	US-202519051624-A
Country	US
Kind code	A1
Filing date	Feb 12, 2025
Priority date	Nov 30, 2011
Publication date	Jun 5, 2025
Grant date	—

Abstract

A VCM is disclosed, the VCM including a rotor having a first driving unit and arranged therein with a lens, a stator having a second driving unit wrapping the first driving unit and being opposite to the first driving unit, a base supporting the stator and having an opening formed at a position corresponding to that of the lens, a connection terminal including a pair of first and second connection terminals arranged at an upper surface of the base, and an elastic member including a first elastic member coupled to the rotor and electrically connected the first connection terminal and a second elastic member coupled to the rotor and electrically connected the second connection terminal.

First claim

1 . A voice coil motor, comprising:
a base; a bobbin disposed on an upper surface of the base; a coil and a magnet configured to move the bobbin; a lower elastic member coupled with the base and the bobbin; and a terminal disposed on the base, wherein the lower elastic member comprises an inner part coupled with the bobbin, an outer part coupled with the base, and a connection part connecting the inner part and the outer part, wherein the terminal comprises a first part disposed on the upper surface of the base, and a second part bent from the first part, wherein the outer part of the lower elastic member is disposed higher than the first part of the terminal, and wherein the outer part of the lower elastic member comprises a hole configured to be electrically connected with the terminal.

2 . The voice coil motor of claim 1 , comprising a conductive material coupled with the hole of the outer part of the lower elastic member and the first part of the terminal.

3 . The voice coil motor of claim 1 , wherein the hole of the outer part of the lower elastic member is higher than the first part of the terminal.

4 . The voice coil motor of claim 1 , wherein the hole of the outer part of the lower elastic member is formed in a circular shape.

5 . The voice coil motor of claim 1 , wherein the hole of the outer part of the lower elastic member is spaced apart from an outer edge of the outer part of the lower elastic member.

6 . The voice coil motor of claim 1 , wherein the hole of the outer part of the lower elastic member is overlapped with the first part of the terminal in a direction perpendicular to the first part of the terminal.

7 . The voice coil motor of claim 1 , wherein at least a part of the second part of the terminal protrudes from a lower surface of the base opposite to the upper surface of the base.

8 . The voice coil motor of claim 1 , comprising an adhesive fixing the terminal to the base.

9 . The voice coil motor of claim 1 , wherein the first part of the terminal is parallel with the outer part of the lower elastic member.

10 . The voice coil motor of claim 1 , wherein the first part of the terminal comprises a flat plate shape disposed to be parallel with the upper surface of the base.

11 . The voice coil motor of claim 1 , wherein the terminal comprises a third part extending from the first part and inserted in the base.

12 . The voice coil motor of claim 1 , wherein the upper surface of the base comprises a first area and a second area disposed at a position higher than the first area,
wherein the first part of the terminal is disposed on the first area of the base, and wherein the outer part of the lower elastic member is disposed on the second area of the base.

13 . The voice coil motor of claim 1 , wherein the base comprises a recess concavely formed on the upper surface of the base, and
wherein the first part of the terminal is disposed on the recess of the base.

14 . The voice coil motor of claim 1 , wherein the first part of the terminal is disposed to be perpendicular to an optical axis, and
wherein the second part of the terminal is disposed to be perpendicular to the first part of the terminal.

15 . The voice coil motor of claim 1 , comprising a cover disposed on the base and comprising an upper plate and a lateral plate extending from the upper plate,
wherein the coil is disposed on the bobbin, wherein the magnet is disposed between the bobbin and the lateral plate of the cover, and wherein the lower elastic member electrically connects the coil and the terminal.

16 . The voice coil motor of claim 15 , comprising an upper elastic member comprising an inner part coupled with an upper surface of the bobbin, an outer part disposed between the upper plate of the cover and the magnet, and a connection part connecting the inner part of the upper elastic member and the outer part of the upper elastic member.

17 . A camera module, comprising:
a circuit board; an image sensor; the voice coil motor of claim 1 ; and a lens coupled to the bobbin of the voice coil motor and spaced apart from the image sensor, wherein the terminal of the voice coil motor is electrically connected with the circuit board.

18 . A mobile phone, comprising the camera module of claim 17 .

19 . A voice coil motor, comprising:
a base; a bobbin disposed on an upper surface of the base; a coil disposed on the bobbin; a magnet configured to interact with the coil; a lower elastic member coupled with the base and the bobbin; and a terminal disposed on the base, wherein the lower elastic member comprises an inner part coupled with the bobbin, an outer part coupled with the base, and a connection part connecting the inner part and the outer part, wherein the terminal comprises a first part disposed on the upper surface of the base, and a second part bent from the first part, wherein the outer part of the lower elastic member comprises a hole configured to be electrically connected with the terminal, and wherein the hole of the outer part of the lower elastic member is higher than the first part of the terminal.

20 . A voice coil motor, comprising:
a base; a bobbin disposed on an upper surface of the base; a coil disposed on the bobbin; a magnet configured to interact with the coil; a lower elastic member coupled with the base and the bobbin; and a terminal disposed on the base.

Assignees

• Lg Innotek Co Ltd

Inventors

• Lee Seong Min
• Park Sang Ok
• Lee Jun Taek

Classifications

• H02K41/0356

  moving along a straight path · CPC title

• G02B7/08 Primary

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

• G02B7/04

  with mechanism for focusing or varying magnification · CPC title

• G03B3/10 Primary

  Power-operated focusing · CPC title

• H02K33/18 Primary

  with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets · CPC title