Camera module

Patent metadata

Field	Value
Publication number	US-2018309916-A1
Application number	US-201816025194-A
Country	US
Kind code	A1
Filing date	Jul 2, 2018
Priority date	Jan 3, 2014
Publication date	Oct 25, 2018
Grant date	—

Abstract

A camera module according to an exemplary embodiment of the present disclosure is proposed, the camera module including a PCB (Printed Circuit Board) mounted with an image sensor, a housing member arranged at an upper surface of the PCB, a bobbin movably positioned at an inner side of the housing member, an upper elastic member connected to an upper surface of the housing member and to an upper surface of the bobbin, and a space forming part formed at one side of the housing member to provide a moving space to the upper elastic member when the bobbin makes a relatively vertical movement to the housing member.

First claim

What is claimed is:

1 . A VCM (Voice Coil Motor) comprising:
a housing comprising an upper plate and a lateral plate extending from the upper plate; a bobbin disposed in the housing; a coil disposed on the bobbin; a magnet facing the coil and disposed between the coil and the lateral plate of the housing; an upper elastic member comprising a first fixing part disposed between the upper plate of the housing and the magnet, a second fixing part coupled with the bobbin, and a connection part connecting the first fixing part and the second fixing part; and a discrete member disposed between the first fixing part of the upper elastic member and the upper plate of the housing, wherein the magnet is disposed on the lateral plate of the housing, wherein the first fixing part of the upper elastic member is spaced apart from the upper plate of the housing by the discrete member, and wherein the connection part of the upper elastic member is spaced apart from the magnet.

2 . The VCM of claim 1 , wherein the discrete member comprises a spacer separately formed with the housing and disposed on a lower surface of the upper plate of the housing.

3 . The VCM of claim 2 , wherein the connection part of the upper elastic member is overlapped with the magnet in a direction of an optical axis.

4 . The VCM of claim 2 , wherein the connection part of the upper elastic member is spaced apart from the spacer in a direction of an optical axis.

5 . The VCM of claim 2 , wherein the spacer comprises a support protrusion protruding from a lower surface of the spacer, and wherein the first fixing part comprises a hole coupled with the support protrusion.

6 . The VCM of claim 5 , wherein an upper surface of the first fixing part is disposed on the lower surface of the spacer, and wherein a lower surface of the first fixing part is spaced apart from an upper surface of the magnet.

7 . The VCM of claim 5 , wherein a lower surface of the support protrusion is disposed on an upper surface of the magnet.

8 . The VCM of claim 5 , wherein the spacer comprises a lateral wall extending from a lower surface of the spacer along the lateral plate of the housing, and
wherein the support protrusion of the spacer is spaced apart from the lateral wall of the spacer.

9 . The VCM of claim 5 , wherein the spacer comprises a recess recessed from the lower surface of the spacer, and
wherein the recess of the spacer is disposed at a position corresponding with that of the connection part of the upper elastic member.

10 . The VCM of claim 1 , wherein the discrete member comprises a support protrusion integrally formed with the upper plate of the housing, and a lower surface of the support protrusion is disposed at a position lower than that of a lower surface of the upper plate, and
wherein the first fixing part of the upper elastic member is fixed between an upper surface of the magnet and the lower surface of the support protrusion.

11 . A VCM (Voice Coil Motor) comprising:
a housing comprising an upper plate and a lateral plate extending from the upper plate; a bobbin disposed in the housing; a coil disposed on the bobbin; a magnet facing the coil and disposed between the coil and the lateral plate of the housing; and an upper elastic member comprising a first fixing part disposed between the upper plate of the housing and the magnet, a second fixing part coupled with the bobbin, and a connection part connecting the first fixing part and the second fixing part, wherein the magnet is disposed on the lateral plate of the housing, wherein the housing comprises a support protrusion integrally formed with the upper plate, and a lower surface of the support protrusion is spaced apart from the upper plate of the housing, and wherein the first fixing part of the upper elastic member is fixed between an upper surface of the magnet and the lower surface of the support protrusion.

12 . The VCM of claim 11 , wherein the lower surface of the support protrusion is disposed at a position lower than that of the lower surface of the upper plate, and
wherein the connecting part of the upper elastic member is spaced apart from the upper plate of the housing.

13 . The VCM of claim 11 , wherein the connecting part of the upper elastic member is spaced apart from the magnet.

14 . The VCM of claim 11 , wherein an area of the upper surface of the magnet is greater than an area of the lower surface of the support protrusion.

15 . The VCM of claim 11 , wherein the lateral plate extends from an outer edge of the upper plate,
wherein the housing comprises an inner yoke extending from an inner edge of the upper plate, wherein the coil is disposed on an outer lateral surface of the bobbin, wherein the bobbin comprises a groove formed on the outer lateral surface of the bobbin, and wherein a portion of the inner yoke is disposed in the groove of the bobbin and between the coil and the bobbin.

16 . The VCM of claim 15 , wherein the connecting part of the upper elastic member is disposed between the support protrusion and the inner yoke.

17 . The VCM of claim 11 , wherein an upper surface of the first fixing part of the upper elastic member contacts with the lower surface of the support protrusion.

18 . The VCM of claim 11 , wherein a lower surface of the fixing part of the upper elastic member contacts with the upper surface of the magnet.

19 . The VCM of claim 11 , wherein an upper surface of the first fixing part of the upper elastic member is fixed to the lower surface of the support portion by an adhesive.

20 . A camera module, comprising:
a PCB (Printed Circuit Board); an image sensor disposed on the PCB; the VCM of claim 11 disposed on the PCB; and a lens coupled with the bobbin of the VCM.

Assignees

• Lg Innotek Co Ltd

Inventors

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

Classifications

• H04N23/54

  Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils · CPC title

• H04N23/51

  Housings · CPC title

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• H04N23/57 Primary

  Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices · CPC title

• H02K41/0354

  Lorentz force motors, e.g. voice coil motors · CPC title