CN102111056A - Voice coil motor and camera module - Google Patents
Voice coil motor and camera module Download PDFInfo
- Publication number
- CN102111056A CN102111056A CN2009103121647A CN200910312164A CN102111056A CN 102111056 A CN102111056 A CN 102111056A CN 2009103121647 A CN2009103121647 A CN 2009103121647A CN 200910312164 A CN200910312164 A CN 200910312164A CN 102111056 A CN102111056 A CN 102111056A
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- China
- Prior art keywords
- magnet
- voice coil
- coil
- coil motor
- coil holder
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Abstract
The invention discloses a voice coil motor. The voice coil motor comprises a shell, a coil seat, a magnet and a supporting seat, wherein the shell is provided with accommodating space; a coil is wounded on the coil seat; the coil can conduct to a current to generate magnetic induction with the magnet, so that the coil seat can move relative to the magnet; the supporting seat is matched with the shell to accommodate the coil seat and the magnet in the accommodating space; a transparent hole is reserved in the centre of the supporting seat; the end surface, adjacent to the coil seat, of the supporting beat is provided with a dust collecting area surrounding the transparent hole; and a bonding agent is coated on the dust collecting area. The voice coil motor has a dust collecting function. The invention also provides a camera module adopting the voice coil motor.
Description
Technical field
The camera module that the present invention relates to a kind of voice coil motor and adopt this voice coil motor.
Background technology
Voice coil motor has that volume is little, power consumption reaches advantages such as cheap less, is suitable as electronic product, as the actuator of digital camera, mobile phone, Digital Video etc.Voice coil motor mainly comprises coil holder and the magnet that is arranged with coil, but coil conducting electric current, to produce magnetic induction with magnet, this coil holder can be moved relative to magnet, thereby change the distance between lens barrel or focusing lens set or zoom lens set and the image sensor, and then realize focusing or zoom function.Yet, when coil holder and magnet relatively move, can produce dust because of friction, these dusts enter the bottom of voice coil motor easily, and then fall on the image sensor, thereby reduce the image quality of image sensor.
Summary of the invention
In view of above-mentioned condition, be necessary to provide a kind of voice coil motor with dust collection function, and the camera module that adopts this voice coil motor, this voice coil motor can stop dust to fall on the image sensor, thereby improves the image quality of camera module.
A kind of voice coil motor comprises the housing with a receiving space, the coil holder that is arranged with coil, magnet and supporting base.But coil conducting electric current to produce magnetic induction with magnet, can move this coil holder relative to this magnet.Supporting base cooperates with housing coil holder and magnet is contained in this receiving space.A loophole is offered at this supporting base middle part.The end face of contiguous this coil holder of this supporting base is provided with the accumulation area around this loophole, and this accumulation area scribbles binding agent.
A kind of camera module comprises lens, is used to carry the load bearing seat of lens, the voice coil motor that drives this load bearing seat and image sensor.This voice coil motor comprises the housing with a receiving space, coil holder, magnet and the supporting base of winding coil, but this coil conducting electric current to produce magnetic induction with magnet, can move this coil holder relative to this magnet.This supporting base cooperates with this housing this coil holder and magnet is contained in this receiving space.A loophole is offered at this supporting base middle part, is projected to this image sensor from the light of lens incident through this loophole.The end face of contiguous this coil holder of this supporting base is provided with the accumulation area around this loophole, and this accumulation area scribbles binding agent.
The supporting base of above-mentioned voice coil motor is provided with accumulation area, this accumulation area scribbles binding agent, dust clings bonded dose after falling to accumulation area, during follow-up use, these dusts can not kicked up once more, thereby can avoid dust to fall on the image sensor of camera module, thereby improve the quality of imaging.
Description of drawings
Fig. 1 is the camera module stereogram of embodiment of the present invention.
Fig. 2 is the three-dimensional assembly diagram of the voice coil motor of embodiment of the present invention.
Fig. 3 is the generalized section along the III III line of Fig. 2.
Fig. 4 is the stereogram of the supporting base of voice coil motor shown in Figure 2.
The main element symbol description
| The |
20 |
| |
10 |
| |
21 |
| |
22 |
| |
23 |
| |
11 |
| Diapire | 112 |
| |
113 |
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115 |
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12 |
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121 |
| Containing |
122 |
| |
13 |
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131 |
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132 |
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14 |
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141 |
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15a |
| |
15b |
| Through |
114、151a、151b |
| Fixed |
152a、 |
| Deformations | |
| 153a、 | |
| End face | |
| 142 | |
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143 |
| The dust- |
144 |
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146 |
Embodiment
Below in conjunction with the drawings and the specific embodiments to voice coil motor of the present invention and adopt the camera module of this voice coil motor to be described in further detail.
See also Fig. 1, the camera module 20 of embodiment of the present invention comprises lens 21, is used to carry the load bearing seat 22 of lens 21, drives the voice coil motor 10 and the image sensor 23 of load bearing seat 22.Voice coil motor 10 is used for driving lens 21 and moves to realize the focusing or the zoom function of camera module 20.
Please consult Fig. 2 and Fig. 3 simultaneously, voice coil motor 10 comprises housing 11, coil holder 12, magnet 13, supporting base 14, the first shell fragment 15a and the second shell fragment 15b.
The outer peripheral face of coil holder 12 is arranged with coil 121, and the axis direction that coil 121 twines overlaps with central shaft a.In the present embodiment, coil holder 12 is a square structure, and a cylindrical containing cavity 122 is offered at its middle part, and lens 21 are contained in the containing cavity 122.
The north and south magnetic pole line direction of magnet 13 is vertical substantially with the axis direction that coil 121 twines, but coil 121 conducting electric currents, and to produce magnetic induction with magnet 13, coil holder 12 can move along central axis a direction relative to magnet 13 by this.
In the present embodiment, magnet 13 comprises first magnet 131 and second magnet 132.First magnet 131 and second magnet 132 are arranged and are provided with at interval along central axis a direction.First magnet 131 is fixedly set in the top of coil holder 12, and second magnet 132 is fixed in the below of coil holder 12, thereby makes coil holder 12 be folded between first magnet 131 and second magnet 132.First magnet 131 and second magnet 132 have suitable distance along central axis a direction, so that coil holder 12 can move up and down along central axis a, and realize the focusing or the zoom function of camera module 20.
The first shell fragment 15a comprises through hole 151a, the fixed part 152a of portion located therein and centers on the deformations 153a of through hole 151a.Deformations 153a can be along producing strain under the external force of central shaft a direction.Through hole 151a incides lens 21 for light.
In the present embodiment, structure, the shape of the first shell fragment 15a and the second shell fragment 15b are all identical.The second shell fragment 15b comprises through hole 151b, fixed part 152b and centers on the deformations 153b of through hole 151b.Through hole 151b is incident to image sensor 23 for light behind lens 21.
The fixed part 152a of the first shell fragment 15a is fixedlyed connected with first magnet 131, and deformations 153a is fixedlyed connected with the top of coil holder 12.The fixed part 152b of the second shell fragment 15b is fixedlyed connected with second magnet 132, and deformations 153b is fixedlyed connected with the bottom of coil holder 12, thereby coil holder 12 is suspended in the housing 11.
Be appreciated that also a shell fragment can only be set, as the first shell fragment 15a or the second shell fragment 15b; The structure of the first shell fragment 15a and the second shell fragment 15b and shape also can be inequality.
Please be simultaneously referring to Fig. 4, supporting base 14 is arranged at housing 11 bottoms, and the inner peripheral surface of its profile and housing 11 matches.In the present embodiment, supporting base 14 rectangular bulks.Supporting base 14 is arranged to match in the housing 11 and with housing 11 coil holder 12 and magnet 13 is contained in the receiving space 115.A loophole 141 is offered at supporting base 14 middle parts.Can incide on the image sensor 23 by through hole 151b and loophole 141 successively from the light of lens 21 outgoing.
The end face 142 of supporting base 14 adjacent threads ring supports 12 is provided with the accumulation area 143 around loophole 141, and accumulation area 143 scribbles binding agent 146.Accumulation area 143 is arranged at the below of coil holder 12, coil holder 12, when the dust that is produced falls to accumulation area 143, clings bonded dose 146 when central shaft a direction moves relative to magnet 13, thereby stop dust to fall on the image sensor 23, improve the image quality of camera module 20.
Further, the inside edge of accumulation area 143 also is formed with the dust-break wall 144 that extends towards near coil holder 12 directions.Dust-break wall 144 can further stop dust to fall on the image sensor 23 from loophole 141.
Specifically in the present embodiment, accumulation area 143 is for being opened in the annular groove of end face 142, and envelop ring support 12 outer peripheral edges are perpendicular to the projection in the plane of central shaft a.Binding agent 146 is covered with accumulation area 143, i.e. the bottom surface of annular groove.Dust-break wall 144 is for being formed at the annular wall of loophole 141 peripheries.Binding agent 146 is preferably epoxy resin, and is preferable, and binding agent 146 solidifies in accumulation area 143, thereby more effectively adheres dust.
Be understandable that those skilled in the art also can do other variation etc. and be used 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 and all can.The variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.
Claims (10)
1. voice coil motor, comprise the housing with a receiving space, the coil holder that is arranged with coil, magnet and supporting base, but this coil conducting electric current, to produce magnetic induction with magnet, this coil holder can be moved relative to this magnet, this supporting base cooperates with this housing this coil holder and magnet is contained in this receiving space, a loophole is offered at this supporting base middle part, it is characterized in that: the end face of contiguous this coil holder of this supporting base is provided with the accumulation area around this loophole, and this accumulation area scribbles binding agent.
2. voice coil motor as claimed in claim 1 is characterized in that: the inside edge of this accumulation area is formed with the dust-break wall that extends towards near this coil holder direction.
3. voice coil motor as claimed in claim 1 or 2 is characterized in that: this accumulation area is the annular groove that is opened in this end face.
4. voice coil motor as claimed in claim 1 or 2 is characterized in that: this adhesive cures is in this accumulation area.
5. voice coil motor as claimed in claim 4 is characterized in that: this binding agent is an epoxy resin.
6. voice coil motor as claimed in claim 1 is characterized in that: this receiving space has a central axis, and this magnet comprises first magnet and second magnet of arranging along this central axial direction, and this coil holder is located between this first magnet and second magnet.
7. voice coil motor as claimed in claim 6, it is characterized in that: this voice coil motor further comprises two shell fragments, each shell fragment comprises fixed part and deformations, the fixed part of these two shell fragments is fixedlyed connected with the opposite end of this coil holder respectively, and the deformations of these two shell fragments is fixedlyed connected with first magnet and second magnet respectively.
8. camera module, it comprises lens, be used to carry the load bearing seat of lens, drive the voice coil motor and the image sensor of this load bearing seat, this voice coil motor comprises the housing with a receiving space, be arranged with the coil holder of coil, magnet and supporting base, but this coil conducting electric current, to produce magnetic induction with magnet, this coil holder can be moved relative to this magnet, this supporting base cooperates with this housing this coil holder and magnet is contained in this receiving space, a loophole is offered at this supporting base middle part, be projected to this image sensor from the light of this lens incident through this loophole, it is characterized in that: the end face of contiguous this coil holder of this supporting base is provided with the accumulation area around this loophole, and this accumulation area scribbles binding agent.
9. camera module as claimed in claim 8 is characterized in that: the inside edge of this accumulation area is formed with the dust-break wall that extends towards near this coil holder direction.
10. camera module as claimed in claim 8 is characterized in that: this accumulation area is the annular groove that is opened in this end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103121647A CN102111056A (en) | 2009-12-24 | 2009-12-24 | Voice coil motor and camera module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103121647A CN102111056A (en) | 2009-12-24 | 2009-12-24 | Voice coil motor and camera module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102111056A true CN102111056A (en) | 2011-06-29 |
Family
ID=44175117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103121647A Pending CN102111056A (en) | 2009-12-24 | 2009-12-24 | Voice coil motor and camera module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102111056A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102334058A (en) * | 2011-07-20 | 2012-01-25 | 香港应用科技研究院有限公司 | The magnet structure that is used for small-sized imaging device |
| CN103001445A (en) * | 2012-09-29 | 2013-03-27 | 苏州贝腾特电子科技有限公司 | Miniature driving motor |
| CN103001443A (en) * | 2012-09-29 | 2013-03-27 | 苏州贝腾特电子科技有限公司 | Miniature driving motor |
| CN103001446A (en) * | 2012-09-29 | 2013-03-27 | 苏州贝腾特电子科技有限公司 | Miniature drive motor |
| CN103036346A (en) * | 2011-09-29 | 2013-04-10 | Lg伊诺特有限公司 | Voice coil motor |
| CN104682633A (en) * | 2013-11-28 | 2015-06-03 | 魏立鼎 | Assembling method of voice coil motor |
| CN104698566A (en) * | 2013-12-04 | 2015-06-10 | Lg伊诺特有限公司 | Motor for actuating lens |
| CN104776920A (en) * | 2015-03-26 | 2015-07-15 | 中国人民解放军国防科学技术大学 | Super-resolution infrared imaging and stabilization integrated device |
| CN103312108B (en) * | 2012-03-16 | 2016-12-14 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor and manufacture method thereof |
| CN109565540A (en) * | 2016-07-21 | 2019-04-02 | Lg伊诺特有限公司 | Lens driving device and camera model and optical device including lens driving device |
-
2009
- 2009-12-24 CN CN2009103121647A patent/CN102111056A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102334058A (en) * | 2011-07-20 | 2012-01-25 | 香港应用科技研究院有限公司 | The magnet structure that is used for small-sized imaging device |
| CN103036346A (en) * | 2011-09-29 | 2013-04-10 | Lg伊诺特有限公司 | Voice coil motor |
| CN103036346B (en) * | 2011-09-29 | 2017-05-10 | Lg伊诺特有限公司 | Voice coil motor |
| CN103312108B (en) * | 2012-03-16 | 2016-12-14 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor and manufacture method thereof |
| CN103001443B (en) * | 2012-09-29 | 2015-10-21 | 深圳市光控数码光电有限公司 | Micro-driving motor |
| CN103001446A (en) * | 2012-09-29 | 2013-03-27 | 苏州贝腾特电子科技有限公司 | Miniature drive motor |
| CN103001445A (en) * | 2012-09-29 | 2013-03-27 | 苏州贝腾特电子科技有限公司 | Miniature driving motor |
| CN103001443A (en) * | 2012-09-29 | 2013-03-27 | 苏州贝腾特电子科技有限公司 | Miniature driving motor |
| CN104682633B (en) * | 2013-11-28 | 2017-07-07 | 魏立鼎 | The assemble method of voice coil motor |
| CN104682633A (en) * | 2013-11-28 | 2015-06-03 | 魏立鼎 | Assembling method of voice coil motor |
| CN104698566A (en) * | 2013-12-04 | 2015-06-10 | Lg伊诺特有限公司 | Motor for actuating lens |
| CN104698566B (en) * | 2013-12-04 | 2019-12-17 | Lg伊诺特有限公司 | lens driving motor |
| CN104776920A (en) * | 2015-03-26 | 2015-07-15 | 中国人民解放军国防科学技术大学 | Super-resolution infrared imaging and stabilization integrated device |
| CN104776920B (en) * | 2015-03-26 | 2018-04-13 | 中国人民解放军国防科学技术大学 | Super-resolution infrared imaging is surely as integrated apparatus |
| CN109565540A (en) * | 2016-07-21 | 2019-04-02 | Lg伊诺特有限公司 | Lens driving device and camera model and optical device including lens driving device |
| CN109565540B (en) * | 2016-07-21 | 2021-02-05 | Lg伊诺特有限公司 | Lens driving apparatus, and camera module and optical apparatus including the same |
| US10935752B2 (en) | 2016-07-21 | 2021-03-02 | Lg Innotek Co., Ltd. | Lens driving device, and camera module and optical device, which include same |
| US11921349B2 (en) | 2016-07-21 | 2024-03-05 | Lg Innotek Co., Ltd. | Lens driving device, and camera module and optical device, which include same |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110629 |