CN102868280B - Voice coil motor - Google Patents
Voice coil motor Download PDFInfo
- Publication number
- CN102868280B CN102868280B CN201110190595.8A CN201110190595A CN102868280B CN 102868280 B CN102868280 B CN 102868280B CN 201110190595 A CN201110190595 A CN 201110190595A CN 102868280 B CN102868280 B CN 102868280B
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- CN
- China
- Prior art keywords
- fixed mount
- shell fragment
- voice coil
- adjustable shelf
- coil motor
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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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Abstract
A kind of voice coil motor, is used for driving camera lens module motion, and described voice coil motor comprises: one has the fixed mount that is roughly cube structure of light hole, and four corners of fixed mount extend to form catch to light hole respectively, and catch has upper locating hole; One upper cover, is roughly cube structure, and in upper cover correspondence, locating hole has upper locating dowel, and fixed mount and upper cover are located mutually by upper locating dowel and upper locating hole; One movable component, is contained in fixed mount actively, and movable component comprises adjustable shelf and coil, and adjustable shelf is used for accommodating camera lens module, coil winding adjustable shelf; Some magnetites, between fixed mount and movable component, in the time having electric current in coil, produce electromagnetic force so that movable component moves in fixed mount between magnetite and coil; And a lower cover, be used for support movable frame and fixed mount.
Description
Technical field
The present invention relates to a kind of voice coil motor.
Background technology
Traditional voice coil motor comprise shell, upper cover, lower cover, fixed mount, magnetite and movable component etc. itsIts necessary assembly (for example, shell fragment), upper cover has upper locating dowel, and lower cover has lower locating dowel, onThe length sum of locating dowel and lower locating dowel equals or is slightly larger than the height of fixed mount. Upper locating dowel and lower fixedPosition post butt coordinates fixed mount is clamped to the interior volume that upper cover and lower cover limit, in other words,In the middle of upper cover and lower cover are trapped among fixed mount, movable component is arranged in fixed mount actively. Because of upperLocating dowel and lower locating dowel have certain thickness and width, and therefore, four corners of fixed mount need to be establishedPut lead angle, thereby make fixed mount entirety present octagonal structure.
Magnetite is arranged on four corners of fixed mount, and the existence of lead angle must affect fixed mount storage magnetiteSpace, so, magnetite need to arrange suitable shape according to lead angle, therefore, magnetite is in pole orientationOn thickness can lose, and thickness in pole orientation is the key factor that affects magnetite intensity, that, the electromagnetic force between magnetite and the coil of movable component a little less than.
Summary of the invention
In view of this, be necessary to provide the voice coil motor between a kind of coil and magnetite with larger electromagnetic force.
A kind of voice coil motor, is used for driving camera lens module motion, and described camera lens module has central shaft, instituteStating voice coil motor comprises: one has the fixed mount that is roughly cube structure of light hole, described fixed mountFour corners extend to form catch to described light hole respectively, on described catch, there is upper locating hole; OneUpper cover, is roughly cube structure, covers corresponding described upper locating hole on described and has upper locating dowel, instituteStating fixed mount and upper cover locates mutually by described upper locating dowel and upper locating hole; One movable component, activityBe contained in described fixed mount, described movable component comprises adjustable shelf and coil, described adjustable shelf is used forAccommodate described camera lens module, adjustable shelf setting described in described coil winding; Upper shell fragment and lower shell fragment, described inUpper shell fragment and lower shell fragment are suspended in described fixed mount described movable component, and described upper shell fragment is by a glueMode is fixed on described adjustable shelf one end near described upper cover; Some magnetites, are fixed on described fixed mountAnd between movable component, in the time passing into electric current in described coil, between described magnetite and described coil, produceElectromagnetic force is so that described movable component moves in described fixed mount, and described upper locating dowel is supported described upper bulletSheet so that described upper shell fragment be fixed on described magnetite; And a lower cover, be used for supporting described adjustable shelf andDescribed fixed mount, covers under described and has lower locating dowel, and described lower shell fragment has and described lower locating dowel phaseCorresponding lower locating hole, described lower shell fragment is by described lower locating hole and lower locating dowel and by a glue modeBe fixed under described and cover, described lower shell fragment is fixed on described adjustable shelf near under described by a glue modeOne end of lid.
Compared with prior art, the upper cover of voice coil motor of the present invention and lower cover adopt sandwich structure to consolidateDetermine frame and grip, make fixed mount entirety can hold the magnetite that thickness is larger, thereby make the magnetic of magnetiteField intensity increases, and then strengthens the electromagnetic force of voice coil motor.
Brief description of the drawings
Fig. 1 is the schematic diagram of embodiment of the present invention voice coil motor.
Fig. 2 is the decomposing schematic representation of Fig. 1.
Fig. 3 is the decomposing schematic representation of another angle of Fig. 1.
Fig. 4 is the profile of IV-IV line in Fig. 1.
Main element symbol description
Voice coil motor 20
Upper cover 21
First side 210
Upper locating dowel 211
Groove 212
Lower cover 22
Second side 220
Lower locating dowel 221
First terrace 222
Accepting groove 223
Second step face 224
Fixed mount 23
The first side wall 23a
The second sidewall 23b
The 3rd sidewall 23c
The 4th sidewall 23d
Catch 230
Horizontal part 2301
Vertical portion 2302
Upper locating hole 231
Light hole 232
Spatial accommodation 233
Movable component 24
Adjustable shelf 240
Coil 241
Receiving space 242
Back-up block 243
Projection 244
Upper shell fragment 25
Lower shell fragment 26
Lower locating hole 261
Distance piece 27
Magnetite 28
Following detailed description of the invention further illustrates the present invention in connection with above-mentioned accompanying drawing.
Detailed description of the invention
Refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the voice coil motor 20 that the embodiment of the present invention provides is used for drivingIndex glass head module (not shown) moves to realize focusing or zoom function.
Voice coil motor 20 comprise upper cover 21, lower cover 22, fixed mount 23, movable component 24, upper shell fragment 25,Lower shell fragment 26, distance piece 27 and four magnetites 28, wherein, fixed mount 23, movable component 24 and camera lensModule has identical central axis L.
Upper cover 21 has four first sides 210 and quadrate structure roughly, a surface of upper cover 21On four corners extend to form in the same way respectively the centres of 211, four first sides 210 of four upper locating dowelsPart caves inward respectively and forms a groove 212.
Fixed mount 23 is roughly cube structure, and the geometric center of fixed mount 23 has a light hole 232.Fixed mount 23 has the first side wall 23a, the second sidewall 23b, the 3rd sidewall 23c and the 4th that join end to endSidewall 23d, the first side wall 23a and the 3rd sidewall 23c are oppositely arranged, the second sidewall 23b and the 4th sidewall 23dBe oppositely arranged.
Four corners of fixed mount 23 form four catch 230 to light hole 232 inner bendings respectively, thereby makeObtain between catch 230 and the first side wall 23a, the second sidewall 23b, the 3rd sidewall 23c and the 4th sidewall 23dForm respectively a spatial accommodation 233.
Catch 230 comprises horizontal part 2301 and vertical portion 2302, wherein, and the vertical fixed mount of horizontal part 230123 central axis L, the parallel central axis L in vertical portion 2302, has upper locating hole 231 on horizontal part 2301,Upper locating dowel 211 on upper cover 21 stretches in locating hole 231 so that upper cover 21 is mutually fixed with fixed mount 23Position, after upper cover 21 and fixed mount 23 are located, by making fixed mount 23 to the interior coating glue of groove 212Be fixed on upper cover 21.
Certainly, catch 230 also can only include horizontal part 2301.
Four magnetites 28 lay respectively in four spatial accommodations 233 and are close to the first side wall 23a, the second sideOn wall 23b, the 3rd sidewall 23c and the 4th sidewall 23d. Distance piece 27 be positioned at magnetite 28 and catch 230 itBetween with by magnetite 28 with upper cover 21 is spaced apart and upper locating dowel 211 is supported on distance piece 27, whenSo, voice coil motor 20 also can omit distance piece 27.
Thereby movable component 24 is contained in fixed mount 23 and can in fixed mount 23, moves up and down band index glassHead module motion, movable component 24 comprises adjustable shelf 240 and coil 241.
Adjustable shelf 240 is radially provided with back-up block 243 near one end of lower cover 22 and forms with parallel central axis LProjection 244, coil 241 is positioned on the back-up block 243 of adjustable shelf 240 and around adjustable shelf 240, coil 241Height be less than between the height of adjustable shelf 240 and coil 241 and adjustable shelf 240 and there is a receiving space242。
In the time that movable component 24 is assembled in fixed mount 23, catch 230 stretches in receiving space 242, nowCoil 241 is between the vertical portion 2302 and magnetite 28 of catch 230, and therefore, catch 230 has limit simultaneouslyDetermine the function of movable component 24 range of movement.
Upper shell fragment 25 is mutually consolidated between distance piece 27 and magnetite 28 and with magnetite 28 and adjustable shelf 240Fixed, lower shell fragment 26 interfixes between magnetite 28 and lower cover 22 and with lower cover 22 and adjustable shelf 240, onShell fragment 25 and lower shell fragment 26 can make movable component 24 be suspended in fixed mount 23 and after focusing or zoomProvide restoring force to make movable component 24 get back to initial position.
Upper locating dowel 211 on upper cover 21 stretches into locating hole 231 and supports on distance piece 27, so thatPartition 27 compresses upper shell fragment 25 to be fixed on magnetite 28. Between upper shell fragment 25 and adjustable shelf 240, can pass throughPoint glue is fixed.
Lower shell fragment 26 has lower locating hole 261. Lower cover 22 is for having the square knot of four second sides 220Structure, has the lower locating dowel 221 corresponding with lower locating hole 261 on it, lower locating dowel 221 stretches into lower locationIn hole 261 and be fixed on lower shell fragment 26 and lower locating hole 261 is supported on magnetite 28 by a glue, underBetween shell fragment 26 and adjustable shelf 240, can fix by a glue.
In addition, lower cover 22 has on annular accepting groove 223 and each second side 220 and all hasOne step surface 222 and second step face 224, the projection 244 of adjustable shelf 240 be contained in accepting groove 223 so thatAdjustable shelf 240 is located mutually with lower cover 22. Fixed mount 23 is resisted against second step face near one end of lower cover 22On 224, apply glue by First terrace 222 and can make fixed mount 23 be fixed on lower cover 22.
From the structure of fixed mount 23, upper cover 21 and lower cover 22, magnetite 28 can be by upper locating dowel 211And lower locating dowel 221 is fixed between upper cover 21, lower cover 22 and fixed mount 23. In addition, in order to make magnetite 28More firmly fix, can between fixed mount 23 and magnetite 28, apply glue, further by a glueReinforce.
Between the upper cover 21 of voice coil motor 20 and lower cover 22 are clamped to fixed mount 23, in other words, onLid 21, lower cover 22 and fixed mount 23 are sandwich structure, make fixed mount 23 entirety more approach square knotStructure, the relative prior art of thickness of magnetite 28 is increased, thereby the magnetic field intensity of magnetite 28 is increased,Can strengthen the electromagnetic force of voice coil motor 20 constant in the situation that in coil 241 numbers of turn.
In addition, if the thickness of magnetite 28 does not increase, thereby magnetite 28 can be more far away near fixed mount 23Decentre axle L, makes fixed mount 23 have more space can hold large-sized movable component 24, fromAnd make movable component 24 can coordinate large diameter camera lens module or more the coil 241 of multiturn number be wrapped in workIn moving frame 240, the relation being directly proportional to the number of turn of coil 241 based on electromagnetic force, thus can effectively strengthenVoice coil motor 20 electromagnetic forces.
Be understandable that, those skilled in the art also can do other variation etc. and be used in spirit of the present inventionDesign of the present invention, as long as it does not depart from technique effect of the present invention and all can. These are according to spirit of the present inventionThe variation of doing, within all should being included in the present invention's scope required for protection.
Claims (8)
1. a voice coil motor, is used for driving camera lens module motion, and described camera lens module has central shaft,Described voice coil motor comprises:
One fixed mount, is roughly the cube structure with light hole, and four corners of described fixed mount are dividedDo not extend to form catch to described light hole, on described catch, there is upper locating hole;
One upper cover, is roughly cube structure, covers corresponding described upper locating hole on described and has upper locationPost, described fixed mount and upper cover are located mutually by described upper locating dowel and upper locating hole;
One movable component, is contained in described fixed mount actively, described movable component comprise adjustable shelf andCoil, described adjustable shelf is used for accommodating described camera lens module, adjustable shelf setting described in described coil winding;
Upper shell fragment and lower shell fragment, it is described fixing that described upper shell fragment and lower shell fragment are suspended in described movable componentIn frame, described upper shell fragment is fixed on described adjustable shelf one end near described upper cover by a glue mode;
Some magnetites, are fixed between described fixed mount and movable component, when passing into electric current in described coilTime, between described magnetite and described coil, produce electromagnetic force so that described movable component in described fixed mountMotion, described upper locating dowel is supported described upper shell fragment so that described upper shell fragment is fixed on described magnetite; WithAnd
One lower cover, is used for supporting described adjustable shelf and described fixed mount, and cover under described and there is lower locating dowel,Described lower shell fragment has the lower locating hole corresponding with described lower locating dowel, and described lower shell fragment is by under describedLocating hole and lower locating dowel are also fixed under described and cover by a glue mode, and described lower shell fragment is by a glueMode is fixed on described adjustable shelf one end near described lower cover.
2. voice coil motor as claimed in claim 1, is characterized in that, described catch comprise horizontal part andVertical portion, the vertical described central shaft of described horizontal part, the parallel described central shaft in described vertical portion, described onLocating hole is positioned on described horizontal part.
3. voice coil motor as claimed in claim 2, is characterized in that, between described catch and fixed mountForm space and be used for holding described magnetite.
4. voice coil motor as claimed in claim 1, is characterized in that, cover on described and there is groove,By apply glue in described groove, described fixed mount and upper cover are interfixed.
5. voice coil motor as claimed in claim 2, is characterized in that, described adjustable shelf is near under describedOne end of lid is radially provided with back-up block and is used for supporting described coil.
6. voice coil motor as claimed in claim 1, is characterized in that, described adjustable shelf is near under describedThe parallel central shaft in one end of lid has projection, and cover corresponding described projection under described and there is accepting groove, described inUpper cover and adjustable shelf are located mutually by described projection and accepting groove.
7. voice coil motor as claimed in claim 1, is characterized in that, described voice coil motor further wrapsDraw together distance piece, described distance piece is on described between shell fragment and magnetite, and described upper locating dowel is supported in instituteState on distance piece so that described upper shell fragment is fixed on described magnetite.
8. voice coil motor as claimed in claim 1, is characterized in that, covers under described and has FirstTerrace and second step face, described fixed mount is resisted against on described second step face, by described FirstTerrace coating glue is so that described fixed mount is fixed under described covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110190595.8A CN102868280B (en) | 2011-07-08 | 2011-07-08 | Voice coil motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110190595.8A CN102868280B (en) | 2011-07-08 | 2011-07-08 | Voice coil motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102868280A CN102868280A (en) | 2013-01-09 |
| CN102868280B true CN102868280B (en) | 2016-05-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110190595.8A Expired - Fee Related CN102868280B (en) | 2011-07-08 | 2011-07-08 | Voice coil motor |
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| Country | Link |
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| CN (1) | CN102868280B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591513A (en) * | 2014-10-24 | 2016-05-18 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| CN106300864A (en) * | 2015-05-28 | 2017-01-04 | 鸿富锦精密工业（深圳）有限公司 | Shell fragment and apply the voice coil motor of this shell fragment, electronic installation |
| CN107462964A (en) * | 2016-06-06 | 2017-12-12 | 新科实业有限公司 | The assemble method of SMA components and OIS devices |
| CN109725478A (en) * | 2017-10-30 | 2019-05-07 | 深圳光峰科技股份有限公司 | A kind of projector's motor-driven lens displacement structure and projector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887157A (en) * | 2009-05-15 | 2010-11-17 | 东莞市盈聚电子科技有限公司 | Driving module for mobile phone lens |
| KR20100131778A (en) * | 2009-06-08 | 2010-12-16 | (주)차바이오앤디오스텍 | Lens actuator for image pickup apparatus with improved stable focusing |
| CN102820759A (en) * | 2011-06-08 | 2012-12-12 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor and image capture module |
-
2011
- 2011-07-08 CN CN201110190595.8A patent/CN102868280B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887157A (en) * | 2009-05-15 | 2010-11-17 | 东莞市盈聚电子科技有限公司 | Driving module for mobile phone lens |
| KR20100131778A (en) * | 2009-06-08 | 2010-12-16 | (주)차바이오앤디오스텍 | Lens actuator for image pickup apparatus with improved stable focusing |
| CN102820759A (en) * | 2011-06-08 | 2012-12-12 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor and image capture module |
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| Publication number | Publication date |
|---|---|
| CN102868280A (en) | 2013-01-09 |
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Granted publication date: 20160511 Termination date: 20170708 |
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| CF01 | Termination of patent right due to non-payment of annual fee |