CN102570762B - Voice coil motor - Google Patents
Voice coil motor Download PDFInfo
- Publication number
- CN102570762B CN102570762B CN201010612228.8A CN201010612228A CN102570762B CN 102570762 B CN102570762 B CN 102570762B CN 201010612228 A CN201010612228 A CN 201010612228A CN 102570762 B CN102570762 B CN 102570762B
- Authority
- CN
- China
- Prior art keywords
- camera lens
- fitted tube
- lens fitted
- shell fragment
- printed circuit
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The present invention relates to a kind of voice coil motor, it 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 the first containing cavity in order to accommodate camera lens.This magnet around this sidewall, and separates with this sidewall.This at least one shell fragment is connected with this camera lens fitted tube.This printed circuit board technology coil is fixed on this sidewall, and relative with this magnet.Drive this camera lens fitted tube edge wherein axial-movement with this magnets produce magnetic fields power after this printed circuit board technology coil passes into electric current.This at least one shell fragment produces deformation when this camera lens fitted tube moves, bestow this camera lens fitted tube restoring force, to make this camera lens fitted tube static after initial position moves to precalculated position under the effect of this magnetic field force and this restoring force, and be reset to initial position after this printed circuit board technology coil current of cut-out.This voice coil motor is easy to assembly.
Description
Technical field
The present invention relates to a kind of voice coil motor, particularly relate to a kind of voice coil motor comprising printed circuit board technology coil.
Background technology
Voice coil motor has that volume is little, power consumption is few and the advantage such as cheap, be suitable as there is camera function electronic product as the driver of digital camera, mobile phone, Digital Video.
Existing voice coil motor generally includes copper coil, movable accommodating cylinder and magnet.This coil winding is in this movable accommodating cylinder outer wall, and this magnet is relative with this coil, and this movable accommodating cylinder is for accommodating camera lens.When passing to this coil current, produce interaction force between this coil and this magnet, this movable accommodating cylinder of driving along the axis movement of this camera lens, is changed the spacing of the image sensor of this camera lens and this electronic product, reaches effect of zoom by this active force with this.
In the packaging technology of this voice coil motor, need manually copper cash to be wound in this movable accommodating cylinder outer wall to form coil.Because copper cash is superfine, wire diameter is about 0.05 millimeter, easy fracture in winding.Separately, after coiling, in moving back paint welding procedure, the normal easy fracture of copper cash being used as conductive lead wire reserved.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 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 the first containing cavity in order to accommodate camera lens, and this magnet around this sidewall, and separates with this sidewall.This at least one shell fragment is connected with this camera lens fitted tube.This printed circuit board technology coil is fixed on this sidewall, and relative with this magnet.Drive this camera lens fitted tube edge wherein axial-movement with this magnets produce magnetic fields power after this printed circuit board technology coil passes into electric current.This at least one shell fragment produces deformation when this camera lens fitted tube moves, bestow this camera lens fitted tube restoring force, to make this camera lens fitted tube static after initial position moves to precalculated position under the effect of this magnetic field force and this restoring force, and be reset to initial position after this printed circuit board technology coil current of cut-out.
The copper cash of this printed circuit board technology coil is formed in insulating material with printed circuit board forming technique in advance, therefore in the packaging technology of voice coil motor, direct for printed circuit board technology coil paster is fixed on the sidewall of camera lens fitted tube, comparatively easy.And, because printed circuit board technology coil is printed circuit tabular, be convenient to contraposition accurate.Compared to the technique adopting traditional wound copper cash to camera lens fitted tube, both avoided copper cash fracture, and saved built-up time, improve packaging efficiency, also improved assembling yield.Separately, the sheet number of printed circuit board technology coil can be increased as required flexibly, namely indirectly increase the number of plies of copper cash, improve the motive force of movable dress group.
Accompanying drawing explanation
The schematic diagram of the voice coil motor that Fig. 1 provides for the technical program one execution mode.
Fig. 2 is the exploded view of voice coil motor shown in Fig. 1, and this voice coil motor comprises camera lens fitted tube, shell fragment and printed circuit board technology coil.
Fig. 3 is the schematic diagram of the fitted tube of camera lens shown in Fig. 2.
The assembling schematic diagram that Fig. 4 is shell fragment shown in Fig. 2 and shown camera lens fitted tube.
Fig. 5 is for the coil of printed circuit board technology shown in Fig. 2 is along the cutaway view of V-V line.
Main element symbol description
Voice coil motor 10
Shell 20
Substrate 60
Barrier box 70
Base plate 22
First side plate 24
Second side plate 26
Fixing dress group 30
Fixed mount 32
Magnet 34
Boss 322
First containing cavity 321
Accepting hole 325
Shell fragment 40
Positioning through hole 41
Locating aperture 42
Through hole 410
Housing 46
Inside casing 47
Elasticity arm 48
Movable dress group 50
Camera lens fitted tube 51
Printed circuit board technology coil 52
Second containing cavity 512
Reference column 513
Holding section 514
Stopper section 515
Drive circuit 523
Coil 521
Insulating material 522
Centre bore 525
Embodiment
Below in conjunction with the voice coil motor that the drawings and the specific embodiments detailed description the technical program provides.
Refer to Fig. 1 and Fig. 2, the voice coil motor 10 that the embodiment of the present invention provides comprises barrier box 70, fixing dress group 30, two shell fragment 40 and movable dress group 50.
Barrier box 70 prevents the work of its external electronic components of electromagnetic effect of this voice coil motor 10 for eliminating external electromagnetic to the interference of this voice coil motor 10.Barrier box 70 comprises shell 20 and pedestal 60.Shell 20 can be made up of magnetic shielding materials such as dilval, conductive plastics, surface conductance material, electro-conductive glass.The first side plate 24 and two that shell 20 base plate 22, two had in quadrangle is arranged at the relative both sides of base plate 22 is respectively arranged at second side plate 26 on the another both sides relatively of base plate 22 respectively.Base plate 22, two first side plate 24 and two second side plates 26 are formed and are used for the accommodation space of accommodating fixing dress group 30, head 50 and two shell fragments 40.Pedestal 60 is square, for loading image sensor (not shown) and installing fixing dress group 30.
Fixing dress group 30 has fixed mount 32, four blocks of magnet 34, accepting hole 325 and the second containing cavity 321.Fixed mount 32 is the support body in square tubular, and its both ends of the surface are respectively formed with four boss 322.Fixed mount 322 is fixed on pedestal 60 by four boss 322 being positioned at its bottom.Each magnet is fixed in the accepting hole 325 of fixed mount 32 4 sidewall.
Each shell fragment 40 has the through hole 410, housing 46, inside casing 47 and the elasticity arm 48 that are 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 is by external force, inside casing 47 will together with elasticity arm 48 housing 46 place plane lifting relatively.Shell fragment 40 is also provided with four locating aperture 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, for accommodating a boss 322, with this, housing 46 is fixed on fixed mount 32.Separately, shell fragment 40 can only one.
Refer to Fig. 2 to 4, movable dress group 50 is loaded in the 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 is in square tubular structure, and the first containing cavity 512 and eight had for accommodating camera lens (not shown) closes on the reference column 513 at the edge of this first containing cavity 512.In these eight reference columns 513, four tops being uniformly distributed in camera lens fitted tube 51, four bottoms being uniformly distributed in camera lens fitted tube 51.
Each reference column 513 have a holding section matched with the locating aperture 42 of this shell fragment 40 514 and from this holding section 514 outside camera lens fitted tube 51 stopper section 515 of this holding section 514 sidewall outstanding.This holding section 514 is cylindrical structural, and it matches with this locating aperture 42 and this camera lens fitted tube 51 is fixed on 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 for stopping that the inside casing 47 of this shell fragment 40 moves relative to this camera lens fitted tube 51, and departs from this camera lens fitted tube 51.This holding section 514 is one-body molded with this stopper section 515, and mutually vertical.Separately, this holding section 514 also can with this stopper section 515 out of plumb, this holding section 514 and this stopper section 515 also can be shaping separately, then bondd by gummed, other consolidation method such as to be spirally connected fixes as one.
Printed circuit board technology coil refers to the coil in flexible printed circuit board shape conductive metal wire and insulating material made with 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 forms coil pattern.Shape and this coil pattern of printed circuit board technology coil can according to Customer Requirement Designs.Instantly the production firm of printed circuit board technology coil mainly contains Japanese Asahi Kasei Corporation.Usually, printed circuit board technology coil can comprise 1 to 6 layer of coil pattern, and every layer of coil pattern can be made up of copper cash, and thickness is between 30 to 200 microns.Spacing with copper cash each in layer coil pattern is approximately 5 microns, and copper cash wire diameter is about 25 microns, and adjacent two copper cash centre distances are about 30 microns.
Consult Fig. 2 and 5, in present embodiment, each printed circuit board technology coil 52 is fixed on the sidewall of this camera lens fitted tube 51 in the mode of paster, and relative with a magnet 34.Each printed circuit board technology coil 52, in flake, is single layer coil patterning, its drive circuit 523 having centre bore 525, multiple coil pattern 521 and can conduct with multiple coil pattern 521.The plurality of coil pattern 521 arranges around centre bore 525, and each adjacent two coil pattern 521 are spaced from each other by flexible insulating material 522.The copper cash (not shown) that each coil pattern 521 is about 25 microns by wire diameter is made.
If this voice coil motor 10 is applied to camera module, namely in this head 50, group enters camera lens, when passing to electric current to drive circuit 523, electric current will be had to pass through in each coil pattern 521.Then produce magnetic field force between printed circuit board technology coil 52 and magnet 34, movable dress group 50 and camera lens will rise along wherein axis direction opposite base 60 from initial position under the driving of this magnetic field force.In this motion process, elasticity arm 48 produces elastic deformation, on the contrary administration activities dress group 50 and this motive force direction phase restoring force.When this restoring force and this magnetic field force equal and opposite in direction, the stop motion of movable dress group 50, camera lens arrives precalculated position, and namely the focal plane of this camera module, reaches zoom.Cut off the electric current in this drive circuit 523, this elasticity arm 48 will reply deformation, and head 50 and camera lens are back to this initial position.
In this voice coil motor 10, the copper cash of printed circuit board technology coil 52 is formed in insulating material with printed circuit board forming technique in advance, therefore in the packaging technology of voice coil motor 10, direct for printed circuit board technology coil 52 paster is fixed on the sidewall of camera lens fitted tube 51, comparatively easy.And, because printed circuit board technology coil 52 is in printed circuit tabular, be convenient to contraposition accurate.Compared to the technique adopting traditional wound copper cash to camera lens fitted tube 51, both avoided copper cash fracture, and saved built-up time, improve packaging efficiency, also improved assembling yield.Separately, the sheet number of printed circuit board technology coil 52 can be increased as required flexibly, and by its lamination around the sidewall of this camera lens fitted tube 51, namely indirectly increase the number of plies of copper cash, the motive force to activity dress group 50 can be improved.
Be understandable that, those skilled in the art also can do other change and wait 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.These changes done according to the present invention's spirit, all should be included in the present invention's scope required for protection.
Claims (4)
1. a voice coil motor, comprise camera lens fitted tube, magnet and at least one shell fragment, this camera lens fitted tube has sidewall and the first containing cavity in order to accommodate camera lens, this magnet is around this sidewall, and separate with this sidewall, this at least one shell fragment is connected with this camera lens fitted tube, it is characterized in that, this voice coil motor also comprises printed circuit board technology coil, this printed circuit board technology coil is in flake, this printed circuit board technology coil is fixed on this sidewall in the mode of paster, and it is relative with this magnet, drive this camera lens fitted tube edge wherein axial-movement with this magnets produce magnetic fields power after this printed circuit board technology coil passes into electric current, this at least one shell fragment produces deformation when this camera lens fitted tube moves, bestow this camera lens fitted tube restoring force, to make this camera lens fitted tube static after initial position moves to precalculated position under the effect of this magnetic field force and this restoring force, and initial position is reset to after this printed circuit board technology coil current of cut-out.
2. voice coil motor as claimed in claim 1, it 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 on this sidewall foldedly.
3. voice coil motor as claimed in claim 1, it is characterized in that, this voice coil motor also comprises the fixed mount with the second containing cavity, this camera lens fitted tube is contained in this second containing cavity, the sidewall of this fixed mount is provided with multiple accepting hole communicated 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 one 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 one end elasticity of this camera lens fitted tube respectively, each shell fragment is tabular, and central authorities are provided with a through hole and the multiple opening direction locating aperture towards this through hole, the two ends that this camera lens fitted tube is relative with this two shell fragment are respectively provided with the reference column with this locating aperture equivalent, this reference column has the holding section matched with this locating aperture and the stopper section protruding from this holding section sidewall from this holding section outside this camera lens fitted tube, this holding section is used for matching this camera lens fitted tube and this shell fragment to be located with this locating aperture, this stopper section departs from this camera lens fitted tube for stoping this shell fragment.
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 CN102570762A (en) | 2012-07-11 |
| CN102570762B true 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) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345032B (en) * | 2013-01-31 | 2016-08-10 | 林聪� | Lens driver |
| KR102148988B1 (en) * | 2013-07-12 | 2020-08-27 | 엘지이노텍 주식회사 | Camera module |
| 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 |
| CN110601414B (en) * | 2018-06-12 | 2021-04-20 | 三赢科技（深圳）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 |
Citations (4)
| 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 |
| 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 |
| TW201042890A (en) * | 2009-05-27 | 2010-12-01 | Hon Hai Prec Ind Co Ltd | Voice coil motor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592771B (en) * | 2008-05-26 | 2011-11-30 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor actuator |
| TWI426683B (en) * | 2009-03-17 | 2014-02-11 | Vasstek Int Corp | A voice coil motor with a flat coil |
-
2010
- 2010-12-29 CN CN201010612228.8A patent/CN102570762B/en not_active Expired - Fee Related
Patent Citations (4)
| 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 |
| 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 |
| TW201042890A (en) * | 2009-05-27 | 2010-12-01 | Hon Hai Prec Ind Co Ltd | Voice coil motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102570762A (en) | 2012-07-11 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20151229 |
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| EXPY | Termination of patent right or utility model |