CN102570762A - Voice coil motor - Google Patents
Voice coil motor Download PDFInfo
- Publication number
- CN102570762A CN102570762A CN2010106122288A CN201010612228A CN102570762A CN 102570762 A CN102570762 A CN 102570762A CN 2010106122288 A CN2010106122288 A CN 2010106122288A CN 201010612228 A CN201010612228 A CN 201010612228A CN 102570762 A CN102570762 A CN 102570762A
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- China
- Prior art keywords
- camera lens
- fitted tube
- lens fitted
- shell fragment
- printed circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Camera Bodies And Camera Details Or Accessories (AREA)
Abstract
The invention relates to a voice coil motor, which comprises a lens cylinder, a magnet, at least one spring plate and a printed circuit board process coil, wherein the lens cylinder is provided with a lateral wall and a first accommodating cavity for accommodating a lens; the magnet surrounds the lateral wall and is separated from the lateral wall; the at least one spring plate is connected with the lens cylinder; and the printed circuit board process coil is fixed on the lateral wall and is opposite to the magnet. The printed circuit board process coil generates a magnetic field force with the magnet after being electrified, to drive the lens cylinder to move along the axis. The at least one spring plate generates deformation when the lens cylinder moves, and applies a restoring force to the lens cylinder, so that the lens cylinder moves to a preset position from an initial position under the actions of the magnetic field force and the restoring force, is then still and restores to the initial position after the current of the printed circuit board process coil is powered off. The voice coil motor is convenient to assemble.
Description
Technical field
The present invention relates to a kind of voice coil motor, relate in particular to a kind of voice coil motor that comprises the printed circuit board technology coil.
Background technology
Voice coil motor has that volume is little, power consumption reaches advantages such as cheap less, is suitable as the driver of electronic product with camera function such as digital camera, mobile phone, DV.
Existing voice coil motor generally includes copper coil, movable accommodating cylinder and magnet.This coil is wound in this movable accommodating cylinder outer wall, and this magnet is relative with this coil, and this movable accommodating cylinder is used to accommodate camera lens.When passing to this coil current, produce interaction force between this coil and this magnet, this active force will drive the axis movement of this movable accommodating cylinder along this camera lens, with this spacing that changes the image sensor of this camera lens and this electronic product, reach the effect of zoom.
In the packaging technology of this voice coil motor, need manually copper cash to be wound in this movable accommodating cylinder outer wall to constitute coil.Because copper cash is superfine, line directly is about 0.05 millimeter, easy fracture in twining.In addition, after coiling finishes, in moving back the lacquer welding procedure, the normal easy fracture of copper cash that reserves as conductive lead wire.Above-mentioned factor causes waste of material, repeatedly does over again, and wastes time and energy.
Summary of the invention
For improving packaging efficiency and assembling yield, the present invention provides a kind of voice coil motor.
A kind of voice coil motor comprises camera lens fitted tube, magnet, at least one shell fragment and printed circuit board technology coil.This camera lens fitted tube has sidewall and in order to accommodate first containing cavity of camera lens, this magnet centers on this sidewall, and separates with this sidewall.This at least one shell fragment links to each other with this camera lens fitted tube.This printed circuit board technology coil stationary is in this sidewall, and relative with this magnet.This printed circuit board technology coil produces wherein axial-movement of this camera lens fitted tube edge of magnetic field force driving with this magnet after feeding electric current.This at least one shell fragment produces deformation when this camera lens fitted tube motion; Bestow this camera lens fitted tube restoring force; So that this camera lens fitted tube is static after initial position moves to the precalculated position under the effect of this magnetic field force and this restoring force, and after cutting off this printed circuit board technology coil current, be reset to initial position.
The copper cash of this printed circuit board technology coil is formed in the insulating material with printed circuit board forming technology in advance, so in the packaging technology of voice coil motor, the sidewall that the direct paster of printed circuit board technology coil is fixed in the camera lens fitted tube gets final product, and is comparatively easy.And, since the printed circuit board technology coil to be printed circuit tabular, it is accurate to be convenient to contraposition.Compared to adopting tradition to twine the technology of copper cash to camera lens fitted tube, both avoided the copper cash fracture, practiced thrift built-up time, improved packaging efficiency, also improved the assembling yield.In addition, can increase the sheet number of printed circuit board technology coil as required flexibly, promptly increase the number of plies of copper cash indirectly, improve the motive force of movable dress group.
Description of drawings
The sketch map of the voice coil motor that Fig. 1 provides for present technique scheme one execution mode.
Fig. 2 is the exploded view of voice coil motor shown in Figure 1, and this voice coil motor comprises camera lens fitted tube, shell fragment and printed circuit board technology coil.
Fig. 3 is the sketch map of camera lens fitted tube shown in Figure 2.
Fig. 4 be shell fragment shown in Figure 2 with shown in the assembling sketch map of camera lens fitted tube.
Fig. 5 is the cutaway view of printed circuit board technology coil shown in Figure 2 along the V-V line.
The main element symbol description
Shell 20
Fixedly the dress group 30
Fixed mount 32
First containing cavity 321
Accepting hole 325
Positioning through hole 41
Locating aperture 42
Through hole 410
Inside casing 47
Camera lens fitted tube 51
Printed circuit board technology coil 52
Second containing cavity 512
Centre bore 525
Embodiment
Specify the voice coil motor that the present technique scheme provides below in conjunction with accompanying drawing and embodiment.
See also Fig. 1 and Fig. 2, the voice coil motor 10 that the embodiment of the invention provided comprises barrier box 70, fixedly dress group 30, two shell fragments 40 and movable dress groups 50.
Fixedly dress group 30 has fixed mount 32, four magnet 34, accepting hole 325 and second containing cavities 321.Fixed mount 32 is for being the support body of square tubular, and its both ends of the surface respectively are formed with four boss 322.Fixed mount 322 is fixed in pedestal 60 through four boss 322 that are positioned at its bottom.Each magnet is fixed in the accepting hole 325 of fixed mount 32 4 sidewalls.
Each shell fragment 40 has through hole 410, housing 46, inside casing 47 and the elasticity arm 48 that is positioned at its geometric center.Wherein housing 46 is around through hole 410 and away from through hole 410, and inside casing 47 is around the edge of through hole 410.Elasticity arm 48 is between housing 46 and inside casing 47.Be appreciated that when elasticity arm 48 receives external force inside casing 47 will go up and down together with plane, elasticity arm 48 relative housing 46 place.Shell fragment 40 also is provided with four locating apertures 42 and four positioning through hole 41.This four locating aperture 42 is arranged equally spacedly, and all communicates with this through hole 410.Each positioning through hole 41 is located at each drift angle district of housing 46, is used to accommodate a boss 322, with this housing 46 is fixed in fixed mount 32.In addition, shell fragment 40 can be only one.
See also Fig. 2 to 4, movable dress group 50 is loaded in second containing cavity 321 of fixing dress group 30, and it comprises camera lens fitted tube 51 and four printed circuit board technology coils (fine pattern coil, FP coil) 52.
Camera lens fitted tube 51 side's of being tubular structures have first containing cavity 512 that is used to accommodate camera lens (figure does not show) and the reference column 513 at eight edges that close on this first containing cavity 512.In these eight reference columns 513, four tops that are uniformly distributed in camera lens fitted tube 51, four bottoms that are uniformly distributed in camera lens fitted tube 51.
Each reference column 513 has these holding section 514 sidewalls are given prominence in the holding section 514 and that is complementary with the locating aperture 42 of this shell fragment 40 to camera lens fitted tube 51 outside from this holding section 514 stopper section 515.This holding section 514 is a cylindrical structural, and it matches with this locating aperture 42 and this camera lens fitted tube 51 is fixed in the inside casing 47 of shell fragment 40, reaches camera lens fitted tube 51 and is connected with the elasticity of shell fragment 40.This stopper section 51 is used to stop that the inside casing 47 of this shell fragment 40 moves relative to this camera lens fitted tube 51, and breaks away from this camera lens fitted tube 51.This holding section 514 is one-body molded with this stopper section 515, and vertical each other.In addition, this holding section 514 also can with these stopper section 515 out of plumb, this holding section 514 and the also moulding separately of this stopper section 515 fix as one through gluing together other consolidation method such as bond, be spirally connected again.
The printed circuit board technology coil is meant the coil that is the flexible printed circuit board shape that conductive metal wire and insulating material are processed with the industry printed circuit board technology; This conductive metal wire is embedded in this insulating material, and the winding displacement track of this conductive metal wire constitutes coil pattern.The shape of printed circuit board technology coil and this coil pattern can design according to customer demand.Instantly the production firm of printed circuit board technology coil mainly contains Japanese Asahi Kasei Corporation.Usually, the printed circuit board technology coil can comprise 1 to 6 layer line loop graph case, and every layer line loop graph case can be processed by copper cash, and thickness is between 30 to 200 microns.Spacing with each copper cash in the layer line loop graph case is approximately 5 microns, and the copper cash line directly is about 25 microns, and adjacent two copper cash centre distances are about 30 microns.
Consult Fig. 2 and 5, in this execution mode, each printed circuit board technology coil 52 is fixed in the sidewall of this camera lens fitted tube 51 with the mode of paster, and relative with a magnet 34.Each printed circuit board technology coil 52 is laminar, is the single layer coil patterning, the drive circuit 523 that it has centre bore 525, a plurality of coil pattern 521 and can conduct with a plurality of coil pattern 521.These a plurality of coil pattern 521 are arranged around centre bore 525, and each adjacent two coil pattern 521 is spaced from each other by flexible insulating material 522.Each coil pattern 521 directly is about 25 microns copper cash (figure do not show) by line and processes.
If this voice coil motor 10 is applied to the camera module, promptly group is gone into camera lens in this head 50, when passing to electric current for drive circuit 523, will have electric current to pass through in each coil pattern 521.Then produce magnetic field force between printed circuit board technology coil 52 and the magnet 34, movable dress group 50 will wherein relative pedestal 60 risings of axis direction from the initial position edge under the driving of this magnetic field force with camera lens.In this motion process, elasticity arm 48 produces elastic deformation, administration activities dress group 50 and this motive force restoring force in the opposite direction.When this restoring force and this magnetic field force equal and opposite in direction, movable dress is organized 50 stop motions, and camera lens arrives the precalculated position, and promptly zoom is reached in the focal plane of this camera module.Cut off the electric current in this drive circuit 523, this elasticity arm 48 will be replied deformation, and head 50 is back to this initial position with camera lens.
In this voice coil motor 10; The copper cash of printed circuit board technology coil 52 is formed in the insulating material with printed circuit board forming technology in advance; So in the packaging technology of voice coil motor 10, the sidewall that printed circuit board technology coil 52 direct pasters are fixed in camera lens fitted tube 51 gets final product, and is comparatively easy.And, since printed circuit board technology coil 52 to be printed circuit tabular, it is accurate to be convenient to contraposition.Compared to adopting tradition to twine the technology of copper cash to camera lens fitted tube 51, both avoided the copper cash fracture, practiced thrift built-up time, improved packaging efficiency, also improved the assembling yield.In addition, can increase the sheet number of printed circuit board technology coil 52 as required flexibly, and, promptly increase the number of plies of copper cash indirectly, can improve motive force activity dress group 50 with the sidewall of its lamination ground around this camera lens fitted tube 51.
It is understandable that those skilled in the art also can do other variation etc. and be used for design of the present invention in spirit of the present invention, as long as it does not depart from technique effect of the present invention and all can.These all should be included in the present invention's scope required for protection according to the variation that the present invention's spirit is done.
Claims (4)
1. a voice coil motor comprises camera lens fitted tube, magnet and at least one shell fragment, and this camera lens fitted tube has sidewall and reaches in order to accommodate first containing cavity of camera lens; This magnet is around this sidewall; And separate with this sidewall, this at least one shell fragment links to each other with this camera lens fitted tube, it is characterized in that; This voice coil motor also comprises the printed circuit board technology coil; This printed circuit board technology coil stationary is in this sidewall, and relative with this magnet, and this printed circuit board technology coil feeds behind electric current and to produce magnetic field force with this magnet and drive this camera lens fitted tube along axial-movement wherein; This at least one shell fragment produces deformation when this camera lens fitted tube motion; Bestow this camera lens fitted tube restoring force,, and after cutting off this printed circuit board technology coil current, be reset to initial position so that this camera lens fitted tube is static after initial position moves to the precalculated position under the effect of this magnetic field force and this restoring force.
2. voice coil motor as claimed in claim 1 is characterized in that, this voice coil motor comprises this printed circuit board technology coil of multilayer, and this multilayer board processing line ring layer is fixed in this sidewall foldedly.
3. voice coil motor as claimed in claim 1 is characterized in that this voice coil motor also comprises the fixed mount with second containing cavity; This camera lens fitted tube is contained in this second containing cavity; The sidewall of this fixed mount is provided with a plurality of accepting holes that communicate with this second containing cavity, and this magnet is contained in this accepting hole, and this at least one shell fragment comprises two shell fragments; This two shell fragment is individually fixed in the both ends of the surface of this fixed mount, and is connected with an end elasticity of this camera lens fitted tube respectively.
4. voice coil motor as claimed in claim 1; It is characterized in that; This at least one shell fragment comprises two shell fragments; This two shell fragment is connected with an end elasticity of this camera lens fitted tube respectively, and each shell fragment is tabular, and central authorities are provided with a through hole and a plurality of opening direction locating aperture towards this through hole; The two ends that this camera lens fitted tube is relative with this two shell fragment respectively are provided with the reference column with this locating aperture equivalent; This reference column has the holding section that is complementary with this locating aperture and reaches the stopper section that outside this camera lens fitted tube, protrudes in this holding section sidewall from this holding section, and this holding section is used for matching so that this camera lens fitted tube and this shell fragment are located with this locating aperture, and this stopper section is used to stop this shell fragment to break away from this camera lens fitted tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010612228.8A CN102570762B (en) | 2010-12-29 | 2010-12-29 | Voice coil motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010612228.8A CN102570762B (en) | 2010-12-29 | 2010-12-29 | Voice coil motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102570762A true CN102570762A (en) | 2012-07-11 |
| CN102570762B CN102570762B (en) | 2015-09-09 |
Family
ID=46415423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010612228.8A Expired - Fee Related CN102570762B (en) | 2010-12-29 | 2010-12-29 | Voice coil motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102570762B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345032A (en) * | 2013-01-31 | 2013-10-09 | 林聪� | Lens driving device |
| CN105324711A (en) * | 2013-07-12 | 2016-02-10 | Lg伊诺特有限公司 | Camera module |
| CN105472219A (en) * | 2015-12-01 | 2016-04-06 | 宁波舜宇光电信息有限公司 | Electrical support for integrated drive coil, camera module group, and application thereof |
| CN111083316A (en) * | 2018-10-19 | 2020-04-28 | 北京小米移动软件有限公司 | Voice coil motor, camera module and terminal |
| TWI703798B (en) * | 2018-06-12 | 2020-09-01 | 鴻海精密工業股份有限公司 | Voice coil motor |
| WO2021258303A1 (en) * | 2020-06-23 | 2021-12-30 | 庆鼎精密电子（淮安）有限公司 | Camera module and manufacturing method therefor |
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| CN1573962A (en) * | 2003-06-17 | 2005-02-02 | Lg电子有限公司 | Micro actuator for controlling focal depth |
| CN101562388A (en) * | 2008-04-16 | 2009-10-21 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| CN101561544A (en) * | 2008-04-18 | 2009-10-21 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor actuator |
| CN101592771A (en) * | 2008-05-26 | 2009-12-02 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor actuator |
| US20100237718A1 (en) * | 2009-03-17 | 2010-09-23 | Chuo-Han Tsai | Voice coil motor with surface coil |
| TW201042890A (en) * | 2009-05-27 | 2010-12-01 | Hon Hai Prec Ind Co Ltd | Voice coil motor |
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2010
- 2010-12-29 CN CN201010612228.8A patent/CN102570762B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1573962A (en) * | 2003-06-17 | 2005-02-02 | Lg电子有限公司 | Micro actuator for controlling focal depth |
| CN101562388A (en) * | 2008-04-16 | 2009-10-21 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
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| US20100237718A1 (en) * | 2009-03-17 | 2010-09-23 | Chuo-Han Tsai | Voice coil motor with surface coil |
| TW201042890A (en) * | 2009-05-27 | 2010-12-01 | Hon Hai Prec Ind Co Ltd | Voice coil motor |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345032B (en) * | 2013-01-31 | 2016-08-10 | 林聪� | Lens driver |
| CN103345032A (en) * | 2013-01-31 | 2013-10-09 | 林聪� | Lens driving device |
| CN111562682B (en) * | 2013-07-12 | 2023-04-07 | Lg伊诺特有限公司 | Camera module |
| CN105324711A (en) * | 2013-07-12 | 2016-02-10 | Lg伊诺特有限公司 | Camera module |
| US10353217B2 (en) | 2013-07-12 | 2019-07-16 | Lg Innotek Co., Ltd. | Camera module |
| CN111562682A (en) * | 2013-07-12 | 2020-08-21 | Lg伊诺特有限公司 | Camera module |
| CN105472219A (en) * | 2015-12-01 | 2016-04-06 | 宁波舜宇光电信息有限公司 | Electrical support for integrated drive coil, camera module group, and application thereof |
| CN105472219B (en) * | 2015-12-01 | 2019-11-29 | 宁波舜宇光电信息有限公司 | The electrical bracket and camera module of integrated driving coil and its application |
| TWI703798B (en) * | 2018-06-12 | 2020-09-01 | 鴻海精密工業股份有限公司 | Voice coil motor |
| CN111083316A (en) * | 2018-10-19 | 2020-04-28 | 北京小米移动软件有限公司 | Voice coil motor, camera module and terminal |
| CN114303307A (en) * | 2020-06-23 | 2022-04-08 | 庆鼎精密电子（淮安）有限公司 | Camera module and preparation method thereof |
| WO2021258303A1 (en) * | 2020-06-23 | 2021-12-30 | 庆鼎精密电子（淮安）有限公司 | Camera module and manufacturing method therefor |
| US11902644B2 (en) | 2020-06-23 | 2024-02-13 | Qing Ding Precision Electronics (Huaian) Co., Ltd | Camera module and method for manufacturing the same |
| CN114303307B (en) * | 2020-06-23 | 2024-08-16 | 庆鼎精密电子（淮安）有限公司 | Camera module and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102570762B (en) | 2015-09-09 |
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Granted publication date: 20150909 Termination date: 20151229 |
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| EXPY | Termination of patent right or utility model |