CN102904412A - Voice coil motor and lens module - Google Patents
Voice coil motor and lens module Download PDFInfo
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- CN102904412A CN102904412A CN201110213405XA CN201110213405A CN102904412A CN 102904412 A CN102904412 A CN 102904412A CN 201110213405X A CN201110213405X A CN 201110213405XA CN 201110213405 A CN201110213405 A CN 201110213405A CN 102904412 A CN102904412 A CN 102904412A
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- voice coil
- coil motor
- magnet
- hole
- microscope base
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Abstract
The invention provides a voice coil motor which comprises a shell, a lower cover, a lens holder, a flat elastic sheet, a magnetic component and a coil. The lower cover is fixed at one end of the shell. The lens holder, the elastic sheet, the magnetic component and the coil are held between the lower cover and the shell. The flat elastic sheet is elastically connected between the lens holder and the lower cover. The magnetic component is fixed on the inner side of the shell. The coil is wound outside the lens holder and opposite to the magnetic component. The magnetic component only comprises a first tabular magnet and a second tabular magnet which are opposite to each other. Due to the fact that the magnetic component of the voice coil motor only comprises two opposite tabular magnets, production cost is lowered effectively compared with traditional voice coil motors with magnets winding coils, and the lens holder can be driven normally. The invention further provides a lens module with the voice coil motor.
Description
Technical field
The present invention relates to a kind of voice coil motor and use the camera lens module of this voice coil motor.
Background technology
Voice coil motor has that volume is little, power consumption reaches the advantages such as cheap less, the actuator that is suitable as in the electronic product (such as digital camera, mobile phone, Digital Video etc.) (sees also Design of a voice coil motor used in the focusing system of a digital video camera, Magnetics, IEEE Transactions on Volume 41, Issue 10, Oct. 2005 Page (s): 3979 – 3981).
Common voice coil motor mainly comprises a fixed mount and fitted tube and at least one shell fragment that is installed in movably in this fixed mount.This fitted tube is used for installing the elements such as lens barrel or focus-variable lens group, and this shell fragment is used for protecting lens barrel or focus-variable lens group etc.Magnet is set on the fixed mount, be arranged with coil on the fitted tube, in the situation of coil electricity, produce magnetic force between coil and the magnet, thereby make fitted tube in fixed mount, be subjected to displacement to change distance between lens barrel or focus-variable lens group and the image sensor, and then realize the function of focusing or zoom.
But all be magnet ring coiling or the setting of coil encircling magnet in traditional voice coil motor, and the cost of magnet and coil account for sizable part of the total cost of voice coil motor in the voice coil motor.How to reduce magnet and the coil use amount in voice coil motor, but can guarantee the voice coil motor normal operation, be the improvement direction of voice coil motor always.
Summary of the invention
In view of this, be necessary to provide a kind of simple in structure, voice coil motor that cost is low and use the camera lens module of this voice coil motor.
A kind of voice coil motor, it comprises a housing, a lower cover, a microscope base, a flat elastic piece, a magnet assembly and a coil; Described lower cover is fixed on an end of housing, between the accommodating lower cover of described microscope base, shell fragment, magnet assembly and coil and the housing; Described flat elastic piece elasticity is connected between microscope base and the lower cover; Described magnet assembly is fixed on the inboard of housing; Described coil encircling is in the outside of microscope base, and is oppositely arranged with described magnet assembly; Described magnet assembly only comprises flat the first magnet and the second magnet, and described the first magnet and the second magnet are oppositely arranged.
A kind of camera lens module, the interior camera lens of movable accommodating cylinder that it comprises above-mentioned voice coil motor and is contained in voice coil motor.
Voice coil motor provided by the invention and use the magnet assembly in the camera lens module of this voice coil motor only to comprise two the first magnet that are oppositely arranged and the second magnet, voice coil motor with respect to traditional magnet ring coiling setting, effectively reduce production cost, and still can guarantee the motion of driven microscope base.
Description of drawings
Fig. 1 is the decomposing schematic representation of the voice coil motor that provides of embodiment of the present invention.
Fig. 2 be among Fig. 1 voice coil motor along the decomposing schematic representation at another visual angle.
Fig. 3 is the voice coil motor schematic perspective view among Fig. 1.
Fig. 4 is that voice coil motor among Fig. 3 is along the cutaway view of IV-IV line.
Fig. 5 is the schematic perspective view that uses the camera lens module of voice coil motor among Fig. 3.
The main element symbol description
| |
100 |
| |
10 |
| |
11 |
| The first through |
111 |
| |
112 |
| |
12 |
| The |
121 |
| The lower surface | 122 |
| Location hole | 123 |
| |
20 |
| The |
21 |
| The first |
211 |
| The second through |
22 |
| |
23 |
| |
30 |
| |
31 |
| The |
311 |
| |
32 |
| The |
321 |
| The second fixed leg | 322 |
| |
33 |
| The |
331 |
| Containing |
34 |
| Flat |
40 |
| |
41 |
| |
411 |
| First paragraph | 411a |
| | 411b |
| Tabs | |
| 412 | |
| Connecting portion | 413 |
| The |
414 |
| The |
415 |
| |
50 |
| The |
51 |
| The |
52 |
| |
60 |
| The camera lens module | 200 |
| Camera lens | 210 |
Following embodiment further specifies the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Shown in Fig. 1-2, be a kind of voice coil motor 100 that embodiment of the present invention provides, it comprises one by one housing 10, a lower cover 20, a microscope base 30, a flat elastic piece 40, a magnet assembly 50 and a coil 60.
Described housing 10 comprises a loam cake 11 and four sidewalls 12 that vertically are installed in loam cake 11 edges.Described loam cake 11 is rectangular-shaped, offers one first through hole 111 and a plurality of pilot hole 112 that is connected with described the first through hole 111 respectively at it near center position.The inboard of described wherein two sidewalls that are oppositely arranged 12 offers respectively one first storage tank 121.Described four sidewalls, 12 head and the tail mutually vertically connect and form a lower surface 122 away from described loam cake 11, and the position near the turning on the described lower surface 122 offers a plurality of location holes 123.In the present embodiment, four pilot holes 112 are the array-like setting along the circumference of described the first through hole 111.
Described lower cover 20 is rectangular-shaped, and it comprises a upper surface 21.Described upper surface 21 vertically extends a plurality of the first fixed legs 211 near the corner location place.Described lower cover 20 offers one second through hole 22 and a plurality of gathering sill 23 that is connected with described the second through hole 22 respectively near center position, and described gathering sill 23 does not run through described lower cover 20.In the present embodiment, four gathering sills 23 are the array-like setting along the circumference of described the second through hole 22.
Described microscope base 30 comprises that a upper surface 31, a lower surface 32 and are vertically connected on the lateral surface 33 between described upper surface 31 and the lower surface 32.This microscope base 30 offers a containing hole 34 that runs through described upper surface 31 and lower surface 32, and the inboard of described containing hole 34 offers screw thread.Described upper surface 31 vertically extends a plurality of the first guide parts 311 around the position of described containing hole 34.Described lower surface 32 vertically extends a plurality of the second guide parts 321 and vertically extends a plurality of the second fixed legs 322 near the corner location place around the position of described containing hole 34.Described lateral surface 33 offers second storage tank 331 around this microscope base 30.In the present embodiment, four the first guide parts 311 and four the second guide parts 321 are the array-like setting along the circumference of described containing hole 34 respectively, and four the second fixed legs 322 are array-like and are distributed on the described lower surface 32.
Described flat elastic piece 40 is comprised of two separate shell fragment sections 41, and described two shell fragment section 41 structures are identical and all adopt sheet metal to be stamped to form.Described each shell fragment section 41 comprises an annulus 411, two tabs 412 and is used for connecting the connecting portion 413 of described annulus 411 and tabs 412.411 one-tenth U-shaped shapes of described annulus, it comprises a first paragraph 411a and two second segment 411b that are vertically fixed on the two ends of first paragraph 411a.Described connecting portion 413 stretches out along being parallel to second segment 411b direction from a wherein corner of described annulus 411.Described one of them sheet section 412 is connected with the position of described connecting portion 413 near first paragraph 411a, and is positioned at the corner of described annulus 411.Described another tabs 412 is connected with the end of described connecting portion 413 away from first paragraph 411a, and is positioned at the corner of the annulus 411 of another shell fragment section 41.Offer a plurality of the first fixing holes 414 on the described annulus 411, offer one second fixing hole 415 on described each tabs 412.
Described magnet assembly 50 only comprises the first magnet 51 and one second magnet 52.Described the first magnet 51 and the second magnet 52 all are the tabular permanent magnets, and are separately positioned in first storage tank 121 of two sidewalls 12 of described housing 10.Described the first magnet 51 and the second magnet 52 are oppositely arranged.Described coil 60 is wire, its along the lateral surface 33 of described microscope base 30 around being arranged in described the second storage tank 331.The two ends of described coil 60 respectively with two of flat elastic piece 40 separate shell fragment section 41 corresponding connections.
As shown in Figure 3-4, in assembling process, first described flat elastic piece 40 is fastened between described lower cover 20 and the microscope base 30.The first fixed leg 211 of described lower cover 20 is contained in first fixing hole 414 of annulus 411 of described flat elastic piece 40.The second fixed leg 322 of described microscope base 30 is contained in second fixing hole 415 of tabs 412 of described flat elastic piece 40.And then described housing 10 is assembled on the described lower cover 20, the first fixed leg 211 of described lower cover 20 is contained in the location hole 123 of housing 10.Described coil 60 is oppositely arranged with described magnet assembly 50.The first guide part 311 on the described microscope base 30 and the second guide part 321 match with described pilot hole 112 and described gathering sill 23 respectively.
In use, two shell fragment sections 41 by described flat elastic piece 40 pass to electric current to coil 60.According to electromagnetic induction principle, described coil 60 produces magnetic poles and the first magnet 51 magnetic field identical with one second magnet 52, thus drive described microscope base 30 from initial position along wherein relative lower cover 20 risings of axis direction.In this motion process, described flat elastic piece 40 produces elastic deformation, bestows the restoring force of microscope base 30 and this motive force opposite direction.When this leads to the electric current of described coil 60 when cut-out, this flat elastic piece 40 will recover deformation, and described microscope base 30 returns back to this initial position under the effect of the restoring force of flat elastic piece 40.In the present embodiment, because described coil 60 directly is connected with described flat elastic piece 40, be not connected with coil 60 and do not need additionally to arrange circuit, further reduced production cost.
As shown in Figure 5, for using the camera lens module 200 of the voice coil motor 100 that embodiment of the present invention provides.Described camera lens module 200 also comprises a camera lens 210, and described camera lens 210 is assembled in the containing hole 34 of described microscope base 30.
Voice coil motor provided by the invention and use the magnet assembly in the camera lens module of this voice coil motor only to comprise two the first magnet that are oppositely arranged and the second magnet, voice coil motor with respect to traditional magnet ring coiling setting, effectively reduce production cost, but can guarantee the motion of driven microscope base.
Be understandable that, for the person of ordinary skill of the art, can make change and the distortion that other various pictures are answered by technical conceive according to the present invention, and all these change the protection range that all should belong to claim of the present invention with distortion.
Claims (10)
1. voice coil motor, it comprises a housing, a lower cover, a microscope base, a flat elastic piece, a magnet assembly and a coil; Described lower cover is fixed on an end of housing, between the accommodating lower cover of described microscope base, shell fragment, magnet assembly and coil and the housing; Described flat elastic piece elasticity is connected between microscope base and the lower cover; Described magnet assembly is fixed on the inboard of housing; Described coil encircling is in the outside of microscope base, and is oppositely arranged with described magnet assembly; Described magnet assembly only comprises flat the first magnet and the second magnet, and described the first magnet and the second magnet are oppositely arranged.
2. voice coil motor as claimed in claim 1, it is characterized in that: described housing comprises a rectangular-shaped loam cake and four sidewalls that vertically are installed in cover rim; The inboard of described wherein two relative sidewalls offers respectively the first storage tank for accommodating described the first magnet and the second magnet.
3. voice coil motor as claimed in claim 2, it is characterized in that: described microscope base comprises that a upper surface, a lower surface and are vertically connected on the lateral surface between described upper surface and the lower surface; This microscope base offers a containing hole that runs through described upper surface and lower surface, offers on the described lateral surface for the second storage tank around described coil.
4. voice coil motor as claimed in claim 3, it is characterized in that: described flat elastic piece is comprised of two separate shell fragment sections, and described each shell fragment section comprises an annulus and two tabs that are connected with described annulus; Described annulus is connected with lower cover, and described tabs is connected with microscope base; Offer a plurality of the first fixing holes on described each annulus, offer one second fixing hole on described each tabs.
5. voice coil motor as claimed in claim 4, it is characterized in that: described lower cover comprises a upper surface, described upper surface vertically extends a plurality of the first fixed legs near corner, vertically extend a plurality of the second fixed legs on the lower surface of described microscope base, described the first fixed leg is contained in the first fixing hole, and described the second fixed leg is contained in the second fixing hole.
6. voice coil motor as claimed in claim 5, it is characterized in that: four sidewalls head and the tail in the described housing mutually vertically connect and form a lower surface away from described loam cake, described lower surface is provided with the corresponding location hole of a plurality of and described the first fixed leg, and described the first fixed leg is contained in the described location hole.
7. voice coil motor as claimed in claim 5 is characterized in that: described loam cake offers one first through hole and a plurality of pilot hole that is connected with described the first through hole respectively near center position; Described lower cover offers one second through hole and a plurality of gathering sill that is connected with described the second through hole respectively near center position.
8. voice coil motor as claimed in claim 7, it is characterized in that: the upper surface of described microscope base vertically extends a plurality of the first guide parts around the position of described containing hole, the lower surface of described microscope base vertically extends a plurality of the second guide parts around the position of described containing hole, described the first guide part matches with described pilot hole, and described the second guide part matches with described gathering sill.
9. voice coil motor as claimed in claim 4 is characterized in that: the two ends of described coil respectively with two of flat elastic piece separate corresponding connections of shell fragment section.
10. camera lens module, it comprises such as each described voice coil motor in the claim 1 ~ 9 and is contained in camera lens in the movable accommodating cylinder of this voice coil motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110213405XA CN102904412A (en) | 2011-07-28 | 2011-07-28 | Voice coil motor and lens module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110213405XA CN102904412A (en) | 2011-07-28 | 2011-07-28 | Voice coil motor and lens module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102904412A true CN102904412A (en) | 2013-01-30 |
Family
ID=47576505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110213405XA Pending CN102904412A (en) | 2011-07-28 | 2011-07-28 | Voice coil motor and lens module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102904412A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595216A (en) * | 2013-04-16 | 2014-02-19 | 厦门新鸿洲精密科技有限公司 | Assembly structure of coil and elastic pieces of voice coil motor assembly and assembly technology thereof |
| CN106059243A (en) * | 2016-07-27 | 2016-10-26 | 厦门新鸿洲精密科技有限公司 | Voice coil motor suitable for multiple cameras in parallel arrangement |
| WO2016206074A1 (en) * | 2015-06-26 | 2016-12-29 | 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 |
| CN107357026A (en) * | 2016-05-10 | 2017-11-17 | 台湾东电化股份有限公司 | Lens system |
| CN107959370A (en) * | 2018-01-15 | 2018-04-24 | 东莞高伟光学电子有限公司 | A kind of precision voice coil motor micro-dust treatment device |
| CN108683318A (en) * | 2018-07-10 | 2018-10-19 | 厦门新鸿洲精密科技有限公司 | A kind of superposing type voice coil motor and its assemble method |
| CN117411268A (en) * | 2023-12-15 | 2024-01-16 | 瑞声光电科技(常州)有限公司 | Vibration motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101645640A (en) * | 2008-08-05 | 2010-02-10 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| US20100128370A1 (en) * | 2008-11-26 | 2010-05-27 | Skina Optical Co., Ltd. | Lens module |
| CN101882852A (en) * | 2009-05-07 | 2010-11-10 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| 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
- 2011-07-28 CN CN201110213405XA patent/CN102904412A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101645640A (en) * | 2008-08-05 | 2010-02-10 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| US20100128370A1 (en) * | 2008-11-26 | 2010-05-27 | Skina Optical Co., Ltd. | Lens module |
| CN101882852A (en) * | 2009-05-07 | 2010-11-10 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| 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 (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595216A (en) * | 2013-04-16 | 2014-02-19 | 厦门新鸿洲精密科技有限公司 | Assembly structure of coil and elastic pieces of voice coil motor assembly and assembly technology thereof |
| WO2016206074A1 (en) * | 2015-06-26 | 2016-12-29 | 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 |
| CN107357026A (en) * | 2016-05-10 | 2017-11-17 | 台湾东电化股份有限公司 | Lens system |
| CN106059243A (en) * | 2016-07-27 | 2016-10-26 | 厦门新鸿洲精密科技有限公司 | Voice coil motor suitable for multiple cameras in parallel arrangement |
| CN107959370A (en) * | 2018-01-15 | 2018-04-24 | 东莞高伟光学电子有限公司 | A kind of precision voice coil motor micro-dust treatment device |
| CN108683318A (en) * | 2018-07-10 | 2018-10-19 | 厦门新鸿洲精密科技有限公司 | A kind of superposing type voice coil motor and its assemble method |
| CN108683318B (en) * | 2018-07-10 | 2023-11-28 | 厦门新鸿洲精密科技有限公司 | Superimposed voice coil motor and assembly method thereof |
| CN117411268A (en) * | 2023-12-15 | 2024-01-16 | 瑞声光电科技(常州)有限公司 | Vibration motor |
| CN117411268B (en) * | 2023-12-15 | 2024-03-26 | 瑞声光电科技(常州)有限公司 | Vibration motor |
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Application publication date: 20130130 |
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| RJ01 | Rejection of invention patent application after publication |