CN103095090A - Voice coil motor and lens module - Google Patents
Voice coil motor and lens module Download PDFInfo
- Publication number
- CN103095090A CN103095090A CN2011103443667A CN201110344366A CN103095090A CN 103095090 A CN103095090 A CN 103095090A CN 2011103443667 A CN2011103443667 A CN 2011103443667A CN 201110344366 A CN201110344366 A CN 201110344366A CN 103095090 A CN103095090 A CN 103095090A
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- China
- Prior art keywords
- sleeve
- voice coil
- coil motor
- fixed
- cylindrical shell
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- Lens Barrels (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The invention provides a voice coil motor. The voice coil motor comprises a fixed frame, a sleeve, an elastic piece, a magnetic component, a coil and a guide ring. The elastic piece is connected between the fixed frame and the sleeve. One of the magnetic component and the coil is fixed on the fixed frame, and the other one is fixed on the sleeve. The guide ring is provided with a guide hole. The guide hole is coaxial with the center axis of the sleeve. The guide ring is fixed on the fixed frame. The sleeve is contained in the guide hole in a sliding mode and in clearance fit with the guide ring. According to the voice coil motor and a lens module using the same, the guide ring is arranged and in the clearance fit with the sleeve, and therefore the sleeve is limited to sliding along the direction of an optical axis only and is effectively prevented from shifting in the plane perpendicular to the optical axis. The invention further provides the lens module using 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 electronic product (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 sleeve and at least one shell fragment that is installed in movably in described fixed mount.Described shell fragment generally comprises first fixed part, second fixed part and a connecting portion that is connected between the first fixed part and the second fixed part.Described the first fixed part and fixed mount fix, and described the second fixed part and sleeve fix.Because described connecting portion has certain elasticity, make described the second fixed part not only can move along optical axis direction with respect to the first fixed part, and also can move on perpendicular to the plane of optical axis.
And the camera lens module that uses this voice coil motor is in use procedure, probably because shell fragment perpendicular to the strain on the plane of optical axis, make the camera lens that is contained in sleeve produce certain skew on perpendicular to the plane of optical axis, so that optical axis can't be aimed at, and finally causes the image blurring of camera lens module shooting.
Summary of the invention
In view of this, be necessary to provide a kind of camera lens module that improves the voice coil motor of image quality and use this voice coil motor.
A kind of voice coil motor, it comprises a fixed mount, a sleeve, a shell fragment, a magnet assembly, a coil and a guide ring; Described shell fragment is connected to fixed mount and sleeve; One of them is fixed on described magnet assembly and coil on fixed mount, and another one is fixed on sleeve; Described guide ring offers a pilot hole, the spigot shaft coaxle of described pilot hole and described sleeve, described guide ring is fixed in described fixed mount, described sleeve slide be contained in described pilot hole and with described guide ring matched in clearance.
A kind of camera lens module, it comprises above-mentioned voice coil motor, a camera lens and an image sensor; Described camera lens is housed in the sleeve of voice coil motor, and described image sensor is arranged on an end of fixed mount and toward described camera lens.
Voice coil motor provided by the invention and using in the camera lens module of this voice coil motor by a guide ring is set, described guide ring and sleeve matched in clearance, thereby limiting described sleeve only can move along optical axis direction, prevent that effectively sleeve from producing displacement on the plane perpendicular to optical axis, thereby effectively improved image quality.
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 in Fig. 1 voice coil motor along the decomposing schematic representation at another visual angle.
Fig. 3 is the schematic perspective view that uses the camera lens module of voice coil motor in Fig. 1.
Fig. 4 is that camera lens module in Fig. 3 is along the cutaway view of IV-IV line.
The main element symbol description
| |
100 |
| Fixed |
10 |
| Upper cover | 11 |
| The first through |
111 |
| The |
112 |
| The first |
113 |
| |
12 |
| |
121 |
| The |
122 |
| |
20 |
| The first |
21 |
| Upper surface | 211 |
| The second |
22 |
| Lower surface | 221 |
| Accepting hole | 23 |
| The second |
24 |
| Step | 25 |
| The second storage tank | 26 |
| |
30 |
| Shell fragment section | 31 |
| Annulus | 311 |
| First paragraph | 311a |
| Second segment | 311b |
| Tabs | 312 |
| Connecting portion | 313 |
| The first fixing hole | 314 |
| The second fixing hole | 315 |
| |
40 |
| |
41 |
| |
50 |
| |
60 |
| |
61 |
| The |
200 |
| |
210 |
| |
220 |
| |
230 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
As shown in Fig. 1-2, be a kind of voice coil motor 100 that embodiment of the present invention provides, it comprises fixed mount 10, a sleeve 20, a shell fragment 30, a magnet assembly 40, a coil 50 and a guide ring 60 one by one.
Described fixed mount 10 is cubic, and it comprises a upper cover 11 and four sidewalls 12 that vertically are installed in upper cover 11 edges.Described upper cover 11 is rectangular-shaped, offers first through hole 111 at it near center position.Described upper cover 11 comprises a bottom surface 112, and described bottom surface 112 vertically extends respectively first fixed leg 113 near the position at turning.Each sidewall 12 comprises a medial surface 121, offers first storage tank 122 on each medial surface 121.
Described sleeve 20 is rectangular-shaped, and it comprises first cylindrical shell 21 and second cylindrical shell 22 that is connected to described the first cylindrical shell 21 1 ends, and the cross-sectional area of described the first cylindrical shell 21 is greater than the cross-sectional area of the second cylindrical shell 22.Described the first cylindrical shell 21 comprises one away from the upper surface 211 of the second cylindrical shell 22, and described the second cylindrical shell 22 comprises one away from the lower surface 221 of the first cylindrical shell 21, and described upper surface 211 and described lower surface 221 are positioned at the two ends of sleeve 20.Described sleeve 20 offers an accepting hole 23 that runs through described upper surface 211 and lower surface 221, and the inboard of described accepting hole 23 offers screw thread.Described upper surface 211 vertically extends respectively second fixed leg 24 near the position at turning.Described the first cylindrical shell 21 comprises first lateral surface 212, and described the second cylindrical shell 22 comprises second lateral surface 222, forms the step 25 towards lower surface 221 between described the first lateral surface 212 and the second lateral surface 222.Offer second storage tank 26 around described sleeve 20 on described the first lateral surface 212.
Described shell fragment 30 is comprised of two separate shell fragment sections 31, and described two shell fragment section 31 structures are identical and all adopt sheet metal to be stamped to form.Described each shell fragment section 31 comprises an annulus 311, two tabs 312 and is used for connecting the connecting portion 313 of described annulus 311 and tabs 312.311 one-tenth U-shaped shapes of described annulus, it comprises a first paragraph 311a and two second segment 311b that are vertically fixed on the two ends of first paragraph 311a.Described connecting portion 313 stretches out along being parallel to second segment 311b direction from a wherein corner of described annulus 311.Described one of them sheet section 312 is connected with the position of described connecting portion 313 near first paragraph 311a, and is positioned at the corner of described annulus 311.Described another tabs 312 is connected with the end of described connecting portion 313 away from first paragraph 311a, and is positioned at the corner of the annulus 311 of another shell fragment section 31.Position near the turning on described annulus 311 offers respectively first fixing hole 314, offers second fixing hole 315 on described each tabs 312.
Described magnet assembly 40 comprises four flat magnet 41.Described four magnet 41 are contained in respectively in first storage tank 122 of four sidewalls 12 of described housing 10.Be appreciated that described magnet assembly 40 can be an annular magnet, described annular magnet is fixed on the medial surface 121 of described sidewall 12.
Described coil 50 is wire, its along the first lateral surface 212 of described the first cylindrical shell 21 around being arranged in described the second storage tank 326.The shell fragment section 31 corresponding connections separate with two of flat elastic piece 30 respectively of the two ends of described coil 50.
Be appreciated that described magnet assembly 40 is contained in described the second storage tank 326, described coil 50 is contained in described the first storage tank 122.
Described guide ring 60 is tabular, and it adopts non-magnet_conductible material to make.Described guide ring 60 comprises a pilot hole 61, the spigot shaft coaxle of described pilot hole 61 and described sleeve 20.The cross-sectional area of described pilot hole 61 greater than described the second cylindrical shell 22 less than described the first cylindrical shell 21.
As shown in Figure 4, in assembling process, first described guide ring 60 is arranged on the interior end away from upper cover 11 of described fixed mount 10, the edge of described guide ring 60 is connected with the medial surface 121 of described sidewall 12 fully.Then, more described sleeve 20 is contained in described fixed mount 10, and described the second cylindrical shell 22 is set in described pilot hole 61, described the second cylindrical shell 22 and pilot hole 61 matched in clearance, and described gap is less than 0.1mm.At last, by described shell fragment 30, described sleeve 20 is connected and fixed with described fixed mount 10, described the first fixed leg 113 is fixed in the first fixing hole 314 of described shell fragment 30, and described the second fixed leg 24 is fixed in the second fixing hole 315 of described shell fragment 30.
In use, two shell fragment sections 31 by described shell fragment 30 pass to electric current to coil 50.According to electromagnetic induction principle, described coil 50 produces the magnetic pole magnetic field identical with magnet assembly 40, thus drive described sleeve 20 from the initial position edge wherein optical axis direction move toward upper cover 21.In this motion process, described shell fragment 30 produces elastic deformation, bestows the restoring force of described sleeve 20 and this motive force opposite direction.When the electric current of described coil 50 is led in cut-out, described shell fragment 30 will recover deformation, and described sleeve 20 returns back to initial position under the effect of the restoring force of shell fragment 30.In the motion process that described sleeve 20 comes and goes, described the second cylindrical shell 22 maintainance sets are located in the pilot hole 61 of described guide ring 60, thereby make when shell fragment 30 is subject to elastic deformation on the plane perpendicular to optical axis, describedly prevent that sleeve 20 from producing displacement on the plane perpendicular to optical axis.In addition, owing to being provided with a step 25 between described the first cylindrical shell 21 and the second cylindrical shell 22, make described sleeve 20 can remain on same initial position.Moreover, make because guide ring 60 adopts non-magnet_conductible materials, prevented that effectively the magnetic field of described magnet assembly 40 and coil 50 is to image sensor 220(ginseng Fig. 4) electromagnetic interference.
As shown in Figures 3 and 4, 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, an image sensor 220 and a loading plate 230.Described camera lens 210 is assembled in the accepting hole 23 of described sleeve 20, and described camera lens 210 stretches out from the first through hole 111 of described upper cover 11.Described image sensor 220 is carried in described loading plate 230.Described loading plate 230 is fixed on described fixed mount 10 away from an end of described upper cover 11, and described image sensor 220 is toward described lens barrel 210.
Voice coil motor provided by the invention and using in the camera lens module of this voice coil motor by a guide ring is set, described guide ring and sleeve matched in clearance, thereby limiting described sleeve only can move along optical axis direction, prevent that effectively sleeve from producing displacement on the plane perpendicular to optical axis, thereby effectively improved image quality.
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 and distortion all should belong to the protection range of claim of the present invention.
Claims (8)
1. voice coil motor, it comprises a fixed mount, a sleeve, a shell fragment, a magnet assembly, a coil and a guide ring; Described shell fragment is connected to fixed mount and sleeve; One of them is fixed on described magnet assembly and coil on described fixed mount, and another one is fixed on described sleeve; Described guide ring offers a pilot hole, the spigot shaft coaxle of described pilot hole and described sleeve, described guide ring is fixed in described fixed mount, described sleeve slide be contained in described pilot hole and with described guide ring matched in clearance.
2. voice coil motor as claimed in claim 1, it is characterized in that: described fixed mount comprises a upper cover, and described upper cover comprises a bottom surface, described bottom surface vertically extends respectively first fixed leg near the position at turning.
3. voice coil motor as claimed in claim 2, it is characterized in that: described sleeve comprises first cylindrical shell and second cylindrical shell that is connected to described the first cylindrical shell one end, described the first cylindrical shell comprises one away from the upper surface of the second cylindrical shell, and described upper surface vertically extends respectively second fixed leg near the position at turning.
4. voice coil motor as claimed in claim 3 is characterized in that: described shell fragment 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, described the first fixed leg is fixed in the first fixing hole, and described the second fixed leg is fixed in the second fixing hole.
5. 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.
6. voice coil motor as claimed in claim 3 is characterized in that: the cross-sectional area of described the first cylindrical shell is greater than the cross-sectional area of the second cylindrical shell, the cross-sectional area of described pilot hole greater than described the second cylindrical shell less than described the first cylindrical shell.
7. voice coil motor as claimed in claim 1 is characterized in that: described guide ring adopts non-magnet_conductible material to make.
8. camera lens module, it comprises as the described voice coil motor of any one, a camera lens and an image sensor in claim 1 ~ 7; Described camera lens is housed in the sleeve of voice coil motor, and described image sensor is arranged on an end of fixed mount and toward described camera lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110344366.7A CN103095090B (en) | 2011-11-04 | 2011-11-04 | Voice coil motor and camera lens module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110344366.7A CN103095090B (en) | 2011-11-04 | 2011-11-04 | Voice coil motor and camera lens module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103095090A true CN103095090A (en) | 2013-05-08 |
| CN103095090B CN103095090B (en) | 2017-07-07 |
Family
ID=48207341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110344366.7A Expired - Fee Related CN103095090B (en) | 2011-11-04 | 2011-11-04 | Voice coil motor and camera lens module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103095090B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777305A (en) * | 2014-02-19 | 2014-05-07 | 南昌欧菲光电技术有限公司 | Camera module and voice coil motor thereof |
| WO2015078206A1 (en) * | 2013-11-28 | 2015-06-04 | 歌尔声学股份有限公司 | Electroacoustic transducer |
| CN107179595A (en) * | 2016-03-09 | 2017-09-19 | 佳能株式会社 | Zoom-type lens barrel and picture pick-up device |
| CN109445059A (en) * | 2018-12-04 | 2019-03-08 | 武汉凌云光电科技有限责任公司 | A kind of lens position adjustment mechanism for optical system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080007850A1 (en) * | 2006-06-09 | 2008-01-10 | Tricore Corporation | Voice coil motor type focusing actuator |
| US20080037143A1 (en) * | 2006-08-08 | 2008-02-14 | Diostech Co., Ltd. | Lens assembly with actuating means and auto-focus controlling apparatus having the same |
| CN101563836A (en) * | 2006-11-23 | 2009-10-21 | Lg伊诺特有限公司 | Lens driving apparatus |
| CN101644811A (en) * | 2008-08-08 | 2010-02-10 | 鸿富锦精密工业（深圳）有限公司 | Imaging device |
-
2011
- 2011-11-04 CN CN201110344366.7A patent/CN103095090B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080007850A1 (en) * | 2006-06-09 | 2008-01-10 | Tricore Corporation | Voice coil motor type focusing actuator |
| US20080037143A1 (en) * | 2006-08-08 | 2008-02-14 | Diostech Co., Ltd. | Lens assembly with actuating means and auto-focus controlling apparatus having the same |
| CN101563836A (en) * | 2006-11-23 | 2009-10-21 | Lg伊诺特有限公司 | Lens driving apparatus |
| CN101644811A (en) * | 2008-08-08 | 2010-02-10 | 鸿富锦精密工业（深圳）有限公司 | Imaging device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015078206A1 (en) * | 2013-11-28 | 2015-06-04 | 歌尔声学股份有限公司 | Electroacoustic transducer |
| US9838796B2 (en) | 2013-11-28 | 2017-12-05 | Goertek Inc. | Electroacoustic transducer |
| CN103777305A (en) * | 2014-02-19 | 2014-05-07 | 南昌欧菲光电技术有限公司 | Camera module and voice coil motor thereof |
| CN107179595A (en) * | 2016-03-09 | 2017-09-19 | 佳能株式会社 | Zoom-type lens barrel and picture pick-up device |
| CN107179595B (en) * | 2016-03-09 | 2020-06-19 | 佳能株式会社 | Zoom lens barrel and image pickup apparatus |
| CN109445059A (en) * | 2018-12-04 | 2019-03-08 | 武汉凌云光电科技有限责任公司 | A kind of lens position adjustment mechanism for optical system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103095090B (en) | 2017-07-07 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170517 Address after: Guangdong province Shenzhen city Longhua District Dragon Road No. 83 wing group building 11 floor Applicant after: SCIENBIZIP CONSULTING (SHEN ZHEN) CO., LTD. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Applicant before: Hongfujin Precise Industry (Shenzhen) Co., Ltd. Applicant before: Hon Hai Precision Industry Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170707 Termination date: 20171104 |