CN102820759A - Voice coil motor and image capture module - Google Patents
Voice coil motor and image capture module Download PDFInfo
- Publication number
- CN102820759A CN102820759A CN2011101518230A CN201110151823A CN102820759A CN 102820759 A CN102820759 A CN 102820759A CN 2011101518230 A CN2011101518230 A CN 2011101518230A CN 201110151823 A CN201110151823 A CN 201110151823A CN 102820759 A CN102820759 A CN 102820759A
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- Prior art keywords
- accommodating cylinder
- movable accommodating
- coil
- voice coil
- shell fragment
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Abstract
A voice coil motor comprises a movable barrel, a coil, a fixed framework, a magnetic element, an upper elastic piece and a lower elastic piece, the coil is fixed on the outer wall of the movable barrel, the fixed framework stores the movable barrel and the coil, the magnetic element is fixed on the fixed framework and surrounds the coil, an object side end portion of the movable barrel, which faces to an object to be shot, is provided with a protrusion, the upper elastic piece includes a center portion and a periphery portion, the inner wall of a central through hole of the center portion is provided with a groove which is matched with the protrusion of the movable barrel, and the fixed position of the periphery portion is lower than the position of the center portion, so that when the coil is not powered on, the center portion can form an elastic pre-pressure force in a direction from an object side to an image side, and the elastic pre-pressure force is exerted on the movable barrel. The lower elastic piece, the movable barrel and the fixed framework are fixed, and when the coil is not powered on, the lower elastic piece is in a non-deformation state. An image capture module comprises the voice coil motor and a lens module which is stored in the movable barrel.
Description
Technical field
The present invention relates to voice coil motor, relate in particular to the voice coil motor that drives camera lens, and use the taken module of this voice coil motor.
Background technology
Voice coil motor is usually used in having the electronic installation of shoot function, for example drives the camera lens module in camera and the mobile phone and moves and reach the focusing purpose.A kind of typical voice coil motor comprises that the moveable fitted tube is used to carry camera lens, plays coil and magnet, fixed frame and at least one shell fragment of driving action.This at least one shell fragment is in not deformation state usually when coil is not switched on.As a plurality of shell fragment the time, these a plurality of shell fragments all are in not deformation state usually, the predeformation state that perhaps all is in the suspension support movable accommodating cylinder in this fixed frame.
Yet when all being in not deformation state when shell fragment, owing to there is not the precompression of shell fragment, movable accommodating cylinder possibly rocked and impacted together with the camera lens module when camera carries.And when shell fragment all has predeformation amount, then movable accommodating cylinder has been applied in many times precompression.Need the precompression of carrying big more, then high more to the mould and the moulding requirement of movable accommodating cylinder, promptly the tolerance of mould and moulding is big more to the influence of movable accommodating cylinder.
Summary of the invention
In view of this, be necessary to provide a kind of taken module that can overcome the voice coil motor of above-mentioned shortcoming and use this voice coil motor.
A kind of voice coil motor, it comprises the movable accommodating cylinder of a hollow, a coil, the fixed frame of a hollow, one group of magnetic element, shell fragment and shell fragment once on one.This movable accommodating cylinder is used to accommodate a camera lens module to be driven, and this movable accommodating cylinder is towards waiting that the thing side end of taking thing has many projections.This coil stationary is in this movable accommodating cylinder outer wall.This fixed frame is accommodated this movable accommodating cylinder and coil in wherein.This group magnetic element is fixed in this fixed frame inwall, and around this coil, this group magnetic element and this coil produce magnetic action power and move in this fixed frame to drive this movable accommodating cylinder.Shell fragment be should go up and a central part and a circumference comprised around this central part; This central part has a central through hole; This central through hole inwall offers the many grooves corresponding with many projections of this movable accommodating cylinder; These many projections embed in this many grooves, and this circumference is fixed in this fixed frame inwall, and this circumference position puts on this movable accommodating cylinder from the thing side direction as the elastic forepressure of side direction with one of this central part formation when this coil is not switched on than this central part position is low.And this time shell fragment is a part of and this movable accommodating cylinder is fixed, and another part and this fixed frame are fixed, and when this coil was not switched on, this time shell fragment was in not deformation state.
A kind of taken module, the interior camera lens module of movable accommodating cylinder that it comprises above-mentioned voice coil motor and is contained in voice coil motor.
With respect to prior art; Voice coil motor provided by the invention is owing to there is the precompression of last shell fragment can avoid when camera carries movable accommodating cylinder to be rocked and impact together with the camera lens module; Following shell fragment is not out of shape the precompression that movable accommodating cylinder need be carried when this coil is not switched on less; Thereby make that the mould of movable accommodating cylinder and moulding tolerance can be relatively large, promptly movable accommodating cylinder receives mould and moulding tolerances less.
Description of drawings
Fig. 1 is the schematic perspective view of the voice coil motor that provides of the embodiment of the invention.
Fig. 2 is the exploded perspective sketch map of the voice coil motor of Fig. 1.
Fig. 3 is the opposite angles schematic perspective view of Fig. 2.
Fig. 4 is that Fig. 1 is along cornerwise cut-away view.
Fig. 5 is the cut-away view of Fig. 1 along center line.
The main element symbol description
| |
10 |
| |
20 |
| |
30 |
| Following |
40 |
| Movable |
50 |
| |
60 |
| |
70 |
| |
80 |
| Last shell |
90 |
| |
21 |
| Through |
22 |
| |
12 |
| |
53 |
| |
51 |
| |
52 |
| Central part | 71 |
| |
72 |
| Central through |
74 |
| |
73 |
| The bar shaped |
75 |
Following embodiment will combine above-mentioned accompanying drawing to further specify the present invention.
Embodiment
See also Fig. 1 to Fig. 3, the voice coil motor 100 that the embodiment of the invention provides comprises a loam cake 10, one housings 20, one bases 30, once shell fragment buckling piece 90 on 70, one groups of magnetic elements 80 of shell fragment and on shell fragment 40, one movable accommodating cylinder 50, one coils 60.Loam cake 10, housing 20 and base 30 formed the fixed frame of a hollow, accommodates down shell fragment 40, movable accommodating cylinder 50, coil 60, last shell fragment 70, magnetic element 80 reach shell fragment buckling piece 90 in wherein.
Please consult Fig. 4 and Fig. 5 in the lump; A L shaped lappet 21 is extended in these four corners, housing 20 upper edges respectively; The vertical part bearing of trend of each this lappet 21 is identical with these housing 20 axial directions, and the vertical partial-length of each this lappet 21 is less than this housing 20 and movable accommodating cylinder 50 height.Each this lappet 21 and these housing 20 inwalls form the identical space of horizontal component length of a width and this lappet 21.The horizontal component of each this lappet 21 is provided with through hole 22, is used to keep supplying cover 10 projection 12 and insert and cooperate.
These movable accommodating cylinder 50 inwalls have internal thread, are used for the camera lens module threaded engagement to be driven with.This movable accommodating cylinder 50 is towards waiting that the thing side end of taking thing has many projections 53.These movable accommodating cylinder 50 outer walls be protruding with a plurality of length directions rib 51 identical and with movable accommodating cylinder 50 axial directions from these movable accommodating cylinder 50 outer walls and rib 51 along the extended annular boss 52 of movable accommodating cylinder 50 radial direction.This coil 60 is fixed on this annular boss 52, and this rib 51 makes between this coil 60 and this movable accommodating cylinder 50 outer walls has the space.Each this lappet 21 vertically part stretches into this space, and the vertical partial-length of each this lappet 21 highly makes this movable accommodating cylinder 50 have LAP space (see figure 4) less than this movable accommodating cylinder 50.
Each this magnetic element 80 is inserted in corresponding this lappet 21 and the space between this housing 20.Pass these spaces with this coil 60.This group magnetic element 80 is fixed in this housing 20 inwalls, and around this coil 60.This group magnetic element 80 produces magnetic action power with this coil 60 and moves along housing 20 axial directions in this fixed frame to drive this movable accommodating cylinder 50.
Should go up shell fragment 70 is annular, and it comprises a central part 71 and the circumference 72 around this central part 71.Has bar shaped hole slot 75 so that elasticity to be provided between this central part 71 and the circumference 72.This central part 71 has a central through hole 74, and these central through hole 74 inwalls offer the many grooves 73 corresponding with many projections of this movable accommodating cylinder 50 53.This buckling piece 90 also is an annular, and it places the horizontal component of this lappet 21, and the circumference 72 of withholding shell fragment 70 on this is on this group magnetic element 80.The central part 71 that should go up shell fragment 70 can pass this buckling piece 90.Many projections 53 of this movable accommodating cylinder 50 embed in these many grooves 73.The position of many projections 53 of this movable accommodating cylinder 50 is higher than circumference 72 fixed positions of shell fragment on this 70, makes the central part 71 of shell fragment 70 on this have an elastic forepressure and compresses this movable accommodating cylinder 50.The direction of this elastic forepressure obviously from the thing side direction as side direction.
Above-mentioned configuration makes coil 60 when not switching on, and last shell fragment 70 promptly has predeformation formation precompression to compress this movable accommodating cylinder 50, so can avoid when camera carries, and movable accommodating cylinder 50 is rocked and impacted.On the other hand, when downward shooting, camera lens vertically downward, the last shell fragment 70 precompressions 50 rounds gravity of fitted tube that can take in sail are drop-down.
When not switching on, 50 of this movable accommodating cylinder are in this base 30 at coil 60.This time shell fragment 40 parts are fixing with this movable accommodating cylinder 50, and another part and this base 30 are fixing, and when this coil was not switched on, this time shell fragment can be in not deformation state.
Above-mentioned configuration makes at coil 60 that when not switching on the precompression that puts on movable accommodating cylinder 50 only comes from shell fragment 70.With the shell fragment predeformation amount is △ Y, and the shell fragment stiffness coefficient is the K meter, and this precompression F that puts on movable accommodating cylinder 50 can be expressed as F=K △ Y.The precompression that this movable accommodating cylinder 50 needs to carry makes that than I the mould of movable accommodating cylinder 50 and moulding tolerance can be relatively large, and promptly movable accommodating cylinder 50 receives mould and moulding tolerances less.
When coil electricity, shell fragment 40 all can have further distortion under above-mentioned upward shell fragment 70 reached.
The camera lens module that cooperates with movable accommodating cylinder 50 can comprise lens barrel and be placed in the camera lens (figure does not show) in the lens barrel that this lens barrel outer wall has external screw thread.This voice coil motor 100 and this camera lens module can constitute the taken module that in electronic installations such as camera, mobile phone, uses of suiting.
It is understandable that those skilled in the art also can do other and change in spirit of the present invention, all should be included in the present invention's scope required for protection in.
Claims (8)
1. voice coil motor, it comprises:
The movable accommodating cylinder of one hollow is used to accommodate a camera lens module to be driven, and this movable accommodating cylinder is towards waiting that the thing side end of taking thing has many projections;
One coil stationary is in this movable accommodating cylinder outer wall;
The fixed frame of one hollow, this fixed frame are accommodated this movable accommodating cylinder and coil in wherein;
One group of magnetic element is fixed in this fixed frame inwall, and around this coil, this group magnetic element and this coil produce magnetic action power and move in this fixed frame to drive this movable accommodating cylinder;
Shell fragment on one; Shell fragment be should go up and a central part and a circumference comprised around this central part; This central part has a central through hole, and this central through hole inwall offers the many grooves corresponding with many projections of this movable accommodating cylinder, and these many projections embed in these many grooves; This circumference is fixed in this fixed frame inwall, and this circumference position forms one with this central part when this coil is not switched on and puts on this movable accommodating cylinder from the thing side direction as the elastic forepressure of side direction than this central part position is low; And
Shell fragment once, this time shell fragment part is fixed with this movable accommodating cylinder, and another part and this fixed frame are fixed, and when this coil was not switched on, this time shell fragment was in not deformation state.
2. voice coil motor as claimed in claim 1; It is characterized in that: this movable accommodating cylinder outer wall be protruding with a plurality of length directions rib identical and with the movable accommodating cylinder axial direction from this movable accommodating cylinder outer wall and rib along the extended annular boss of movable accommodating cylinder radial direction; This coil stationary is on this annular boss, and this rib makes between this coil and this movable accommodating cylinder outer wall has the space.
3. voice coil motor as claimed in claim 2; It is characterized in that: this fixed frame comprises a base that cooperatively interacts; A housing and a loam cake, when coil was not switched on, this movable accommodating cylinder seat was in this base; This housing inwall is formed with a plurality of L shaped lappets; The vertical part bearing of trend of each this lappet is identical with this housing axial direction, and each this lappet vertically part stretches into the space between this coil and this movable accommodating cylinder outer wall, and the length of the vertical part of each this lappet makes this movable accommodating cylinder have the LAP space less than this movable accommodating cylinder height.
4. voice coil motor as claimed in claim 3; It is characterized in that: each this lappet and this housing inwall form the identical space of horizontal component length of a width and this lappet; Each this magnetic element is inserted in this corresponding space, and this coil passes each this space.
5. voice coil motor as claimed in claim 4 is characterized in that: comprise that further a ring buckle casting die places the horizontal component of this lappet, and withhold on this shell fragment circumference on this group magnetic element.
6. voice coil motor as claimed in claim 1 is characterized in that: shell fragment has the bar shaped hole slot so that elasticity to be provided for annular on this between its central part and the circumference.
7. voice coil motor as claimed in claim 1 is characterized in that: this movable accommodating cylinder inwall has internal thread, is used for and camera lens module threaded engagement to be driven.
8. taken module, it comprises like each described voice coil motor in the claim 1 ~ 7 and is contained in the camera lens module in the movable accommodating cylinder of this voice coil motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110151823.0A CN102820759B (en) | 2011-06-08 | 2011-06-08 | Voice coil motor and taken module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110151823.0A CN102820759B (en) | 2011-06-08 | 2011-06-08 | Voice coil motor and taken module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102820759A true CN102820759A (en) | 2012-12-12 |
| CN102820759B CN102820759B (en) | 2016-01-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110151823.0A Expired - Fee Related CN102820759B (en) | 2011-06-08 | 2011-06-08 | Voice coil motor and taken module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102820759B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868280A (en) * | 2011-07-08 | 2013-01-09 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| CN103227549A (en) * | 2013-04-15 | 2013-07-31 | 宜兴市贵鑫磁电高科技有限公司 | Subminiature voice coil motor |
| CN104993668A (en) * | 2015-06-26 | 2015-10-21 | 爱佩仪光电技术（深圳）有限公司 | Anti-magnetic-interference optical anti-vibration voice coil motor and manufacturing method therefor |
| WO2015180121A1 (en) * | 2014-05-30 | 2015-12-03 | 博立多媒体控股有限公司 | Zoom lens |
| CN105676403A (en) * | 2016-04-18 | 2016-06-15 | 苏州久易光电科技有限公司 | Ultrathin voice coil motor for lens driving device |
| CN106685123A (en) * | 2017-01-20 | 2017-05-17 | 宜兴市贵鑫磁电高科技有限公司 | Voice coil motor seat compatible to straightly wound coil and hollow coil |
| CN108336850A (en) * | 2018-03-27 | 2018-07-27 | 苏州聚力电机有限公司 | A kind of newly-designed voice coil motor upper cover component |
| CN109613676A (en) * | 2019-01-21 | 2019-04-12 | 湖南新视电子技术有限公司 | A kind of double damping protection lens driving apparatus |
| CN112782902A (en) * | 2020-03-13 | 2021-05-11 | 北京可利尔福科技有限公司 | Optical element driving mechanism and optical module |
| WO2022188559A1 (en) * | 2021-03-08 | 2022-09-15 | Oppo广东移动通信有限公司 | Voice coil motor, camera, and electronic device |
| CN108873230B (en) * | 2018-08-22 | 2024-01-05 | 惠州萨至德光电科技有限公司 | Thin lens motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070166022A1 (en) * | 2006-01-19 | 2007-07-19 | Asustek Computer Inc. | Camera module and electric device using the same |
| CN101488698A (en) * | 2009-02-23 | 2009-07-22 | 李俊 | Voice coil type focus motor |
| 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 |
| CN102025255A (en) * | 2009-09-09 | 2011-04-20 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor and camera module |
-
2011
- 2011-06-08 CN CN201110151823.0A patent/CN102820759B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070166022A1 (en) * | 2006-01-19 | 2007-07-19 | Asustek Computer Inc. | Camera module and electric device using the same |
| CN101488698A (en) * | 2009-02-23 | 2009-07-22 | 李俊 | Voice coil type focus motor |
| 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 |
| CN102025255A (en) * | 2009-09-09 | 2011-04-20 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor and camera module |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868280A (en) * | 2011-07-08 | 2013-01-09 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| CN102868280B (en) * | 2011-07-08 | 2016-05-11 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| CN103227549A (en) * | 2013-04-15 | 2013-07-31 | 宜兴市贵鑫磁电高科技有限公司 | Subminiature voice coil motor |
| US9739982B2 (en) | 2014-05-30 | 2017-08-22 | Bolymedia Holdings Co. Ltd. | Zoom lens |
| WO2015180121A1 (en) * | 2014-05-30 | 2015-12-03 | 博立多媒体控股有限公司 | Zoom lens |
| CN104993668B (en) * | 2015-06-26 | 2018-02-09 | 爱佩仪光电技术（深圳）有限公司 | A kind of diamagnetic interference optical anti-vibration voice coil motor and its manufacture method |
| CN104993668A (en) * | 2015-06-26 | 2015-10-21 | 爱佩仪光电技术（深圳）有限公司 | Anti-magnetic-interference optical anti-vibration voice coil motor and manufacturing method therefor |
| CN105676403A (en) * | 2016-04-18 | 2016-06-15 | 苏州久易光电科技有限公司 | Ultrathin voice coil motor for lens driving device |
| CN105676403B (en) * | 2016-04-18 | 2018-07-20 | 苏州久易光电科技有限公司 | A kind of ultra-thin voice coil motor for lens driver |
| CN106685123A (en) * | 2017-01-20 | 2017-05-17 | 宜兴市贵鑫磁电高科技有限公司 | Voice coil motor seat compatible to straightly wound coil and hollow coil |
| CN108336850A (en) * | 2018-03-27 | 2018-07-27 | 苏州聚力电机有限公司 | A kind of newly-designed voice coil motor upper cover component |
| CN108873230B (en) * | 2018-08-22 | 2024-01-05 | 惠州萨至德光电科技有限公司 | Thin lens motor |
| CN109613676A (en) * | 2019-01-21 | 2019-04-12 | 湖南新视电子技术有限公司 | A kind of double damping protection lens driving apparatus |
| CN112782902A (en) * | 2020-03-13 | 2021-05-11 | 北京可利尔福科技有限公司 | Optical element driving mechanism and optical module |
| CN112782902B (en) * | 2020-03-13 | 2022-09-02 | 北京可利尔福科技有限公司 | Optical element driving mechanism and optical module |
| WO2022188559A1 (en) * | 2021-03-08 | 2022-09-15 | Oppo广东移动通信有限公司 | Voice coil motor, camera, and electronic device |
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| CN102820759B (en) | 2016-01-06 |
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