CN203480108U - Lens driving device - Google Patents
Lens driving device Download PDFInfo
- Publication number
- CN203480108U CN203480108U CN201320382256.4U CN201320382256U CN203480108U CN 203480108 U CN203480108 U CN 203480108U CN 201320382256 U CN201320382256 U CN 201320382256U CN 203480108 U CN203480108 U CN 203480108U
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- clad
- iron
- lens
- shell fragment
- main body
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Abstract
The utility model relates to a lens-driving device. According to the utility model, a novel main iron housing with a boss is used as an assembly framework, thereby enabling all parts to be positioned relying on the main iron housing and to be assembled in the main iron housing. The main iron housing can shield a magnetic field. The main iron housing is equipped with the boss, and can be made through the stamping forming of a die, thereby better controlling the size and tolerance, and improving the assembly precision. A lens supporting bod cooperates with a pedestal in an embedded manner, and a coil cooperates with the lens supporting bod in the embedded manner, thereby effectively preventing the light leakage inside a product and preventing a foreign matter from falling off. The pedestal employs an embedded forming method of metal to increase strength. The main iron housing, a stator iron housing, and an embedded metal insert are welded together through metal laser welding, thereby enabling the strength to be greater than that of welding through employing glue. All the parts are assembled in a single direction, which is easy to achieve automation.
Description
Technical field
The present invention relates to a kind of lens driver, relate in particular to a kind of camera for automatic focusing function, thereby be specifically applied to have the drive unit in the camera lens miniature image field of focusing with the realization of driving lens displacement on the equipment such as mobile phone, camera, video camera or detecting sensor vision system, robotic vision system of camera function.
Background technology
The similar lens driver that existing domestic and international minisize pick-up head adopts adopts the open scheme in China Patent Publication No. CN1683946A disclosed " lens driver " more, stationary part is all comprised of iron-clad and four equiform magnetites, and this magnetite is assembled in respectively four corners of iron-clad; Coil and lens supports body are fixed together, and are placed in stator interior, and together with coil, iron-clad and the magnetite inside at stator moves forward and backward along center position this lens supports body.Lens driver also comprises shell fragment and lower shell fragment, and their peripheries are fixedly connected with iron-clad and fixed lens supporter, and the place ahead also has a framework that upper shell fragment is fixed on this iron-clad.
The precompressed elastic force that the electromagnetic force producing after coil electricity overcomes upper shell fragment and the generation of lower shell fragment, orders about lens supports body and moves along optical axis direction.
The precompression that said lens drive unit utilizes the electromagnetic force along optical axis direction of coil generation to overcome upper shell fragment and the generation of lower shell fragment is realized the position of lens and is moved.But there is shortcomings in device more than, first, owing to only having an iron-clad, larger on magnetic force is revealed; The second, front baffle is generally plastic part, and in injection mo(u)lding, part easily produces burr, and injection mo(u)lding is difficult to ensure the flatness of this part of card; Three, between base and lens supports body location, there is larger gap, easily cause foreign matter to drop out; Four, base and lens supports body position location uniformity coefficient are not enough, easily cause position deflection and optical axis degree bad etc.; Five, in prior art, each assembly is assembled respectively, and package program robotization loaded down with trivial details and that cannot realize integrated member is installed; And the 6th, use glue in assembling process, intensity is difficult to obtain better and very difficult management and control.
Summary of the invention
In order to overcome the above problems, technical scheme of the present invention provides a kind of lens driver, this lens driver is reached object of the present invention by following technological means: the first, adopt an extra outer body iron-clad, thereby strengthen electromagnetic screen effect, meet part client needs for the demand of electromagnetic screen effect; The second, adopt integrated casing to avoid in prior art burr in plastic part moulding to be not easy to control and the uncontrollable problem of plastic part flatness, because metal stamping part has better plasticity and reliability and better precision; Three, between lens supports body and base, be respectively embedded cooperation between coil and lens supports body, from structural design, prevent light leak and avoid foreign matter to drop out; Four, lens supports body and coil minute special talent realizes Dual positioning by location points of engagement, thereby guarantees left and right position deviation and concentric deviation that both assemble; Five, main body iron-clad, with boss, can be used as the mounting framework of all parts, and each assembly carries out general assembly after completing separately, easily is automated installation; Finally, base adopts metal inserted piece molding mode to obtain better intensity, and can adopt laser bonding that the base of main body iron-clad and stator iron-clad, damascene moulding is welded together, thus the combination of all parts has better intensity, or only weld main body iron-clad and stator iron-clad.
In addition, there is respectively some location points of engagement the upper surface of lens supports body and lower surface, to coordinate with upper shell fragment and lower shell fragment location respectively, so that upper shell fragment, lens supports body, pad and lower shell fragment is coaxially fixing.
The invention provides a kind of lens driver, comprising: main body iron-clad (1); Base (9); Stator iron-clad (3) and the magnetite (4) coordinating with stator iron-clad; The lens supports body (6) that coil (5) and carrier form; Wherein before and after lens supports body (6), both sides are respectively arranged with and support its upper shell fragment (2) moving and lower shell fragment (8) and the pad (7) to lower shell fragment (8) pressuring action, it is characterized in that, main body iron-clad (1) is with boss and as assembling skeleton, all parts can rely on main body iron-clad (1) location assembling therein, main body iron-clad (1) is maskable magnetic field again, wherein utilize mould punching moulding to manufacture main body iron-clad (1) to be easy to control its size and tolerance, promote assembly precision; Wherein stator iron-clad (3) and magnetite (4) form closed magnetic path, it is inner at magnetic circuit that coil (5) and lens supports body (6) form rotor movement positioning parts, coil (5) inner side is near the medial surface of stator iron-clad (3), and outside is near the lateral surface of magnetite (4).
For before reaching, address relevant object, one or more aspects of the present invention are included in the feature of hereinafter fully describing and particularly pointing out in claims.The following description and drawings have elaborated some aspect directly perceived of the one or more aspect.But these aspects are only to have indicated several in the variety of way of the principle that can adopt various aspects, and described aspect is intended to contain all these type of aspects and equivalents thereof.
Accompanying drawing explanation
Fig. 1 is the cut-open view of lens driver according to an embodiment of the invention;
Fig. 2 is the decomposition texture schematic diagram of lens driver as shown in Figure 1.
Fig. 3 A-3B is that lens supports body is located schematic diagram with coordinating of upper and lower shell fragment.
The cooperation location schematic diagram of Fig. 4 A-4C lens supports body and coil.
Fig. 5 is the cooperation location schematic diagram of base and lens supports body.
Fig. 6 A-6B is the detailed maps with the main body iron-clad of boss.
Fig. 7 A-7B is the schematic diagram that base metal is imbedded.
Embodiment
The technology of utilizing burying forming, is molded over metalwork in working of plastics, thereby can utilize laser bonding that main shell is welded together with base, strengthens strength of joint (referring to Fig. 7 A-7B, dash area is metalwork, is shown in dotted line welding position).
The invention provides a kind of drive unit in miniature image field that is applicable to.As depicted in figs. 1 and 2, this lens driver comprises: the rotor that main body iron-clad 1, base 9, stator iron-clad 3 and the magnetite 4 coordinating with stator iron-clad, coiling, lens supports body 6 form, wherein before and after this lens supports body, both sides are respectively arranged with the pad 7 that supports its upper shell fragment 2 moving and lower shell fragment 8 and lower shell fragment is played to pressuring action.There are rear pad and base to be fixed support to its lower shell fragment; All assembling parts is positioned in main body iron-clad 1.
The feature of this lens driver is: with the main body iron-clad of boss as assembling skeleton, each assembly carries out general assembly after completing separately, easily be automated installation, stator iron-clad and magnetite form stator, be assembled into main body iron-clad and compress upper shell fragment, the rotor that coil forms with lens supports body is inserted in stator interior, coil is placed between the yoke and magnetite of stator iron-clad, magnetite in coil and stator like this, yoke plate forms the magnetic force of a sealing, this coil is by the embedded locating surface that is connected to lens supports body (referring to Fig. 4 A-4C), coil lateral surface is near the medial surface of integrated magnetite, coil medial surface is near the medial surface of stator iron-clad, after coil electricity, produce electromagnetic force power band moving winding in magnetic field again moves together with lens supports body in stator.
This lens driver also comprises: the upper shell fragment of outer square inner circle ring-type and lower shell fragment and to the pad of lower shell fragment positioning action and base; By the electromagnetic force producing, overcome upper shell fragment and the formed precompression of lower shell fragment after coil power supply, order about lens supports body and move along optical axis direction, and rest on needed position when making a concerted effort balance; Optical axis direction mainly all has 4 location points of engagement (11) by the upper and lower end face of lens supports body, coordinates respectively with upper and lower shell fragment, as location, guarantees that 4 directions are stressed evenly in motion process.The number of location points of engagement (11) can be set as required.
In said lens drive unit, wherein, this main body iron-clad is as assembling skeleton, and iron-clad shape increases by four boss in inside, as the powerful support of upper shell fragment.Because main body iron-clad is metal stamping formed, four boss can obtain higher flatness, can guarantee more smooth upper shell fragment to be provided support to (referring to Fig. 6 A-6B).In said lens drive unit, wherein, each assembly is all assembled in main body iron-clad.In said lens drive unit, there are respectively some location points of engagement (11) upper surface of lens supports body and lower surface, to coordinate (referring to shown in Fig. 3 A-3B) with upper shell fragment and lower shell fragment location respectively, upper shell fragment, lens supports body, pad and lower shell fragment are coaxially fixed with base, adopt evenly location nested mode to be connected contact, guarantee to obtain between product good positioning precision, tightness and planarization.Base adopts metal inserted piece molding mode, thereby obtains better intensity.
In said lens drive unit, can adopt laser bonding that the base of main body iron-clad and stator iron-clad, damascene moulding is welded together to allow jointly and between part, obtain better intensity or only weld main body iron-clad and stator iron-clad.Simultaneously can also compatible several work mode, for example mode of an employing point glue mode, hot riveting mode, ultrasonic soldering.
In said lens drive unit, the connection between lower shell fragment, pad and base, can adopt glue, the multiple connected mode of hot riveting or ultrasonic soldering.And pad can adopt etching or two kinds of modes of punching press, flatness is good.
Said lens drive unit also comprises some terminals 10, and terminal separately impact briquetting, on pad, also can be molded directly within on lower shell fragment.Because the thickness of pad is at least the twice of lower shell fragment thickness, is therefore molded over separately on pad and makes the intensity of terminal better.Multiple implementation can make to assemble diversity simultaneously, meets various different process demands.In above-mentioned lens driver, due to the unidirectional of assembling, more easily realize automatic assembling.
Lens driver of the present invention, owing to having adopted technique scheme, makes it compared with prior art, has plurality of advantages and technique effect:
The present invention is by a main body iron-clad as assembling skeleton, and all assembling parts, in main body iron-clad, more effectively play the effect that shielding magnetic force exposes, and meet the requirement of electromagnetic screen.
Adopt main body iron-clad to increase by four boss simultaneously upper shell fragment is supported, can reduce by a part, improve packaging efficiency.Four boss of main body iron-clad can guarantee the plane precision higher than former working of plastics, go up the more smooth and firm of shell fragment location simultaneously.
Main body iron-clad adopts metal stamping to make, and with respect to the easier control of burr of plastic part, foreign matter etc. increase the reliability of product simultaneously.
Lens supports body and base adopt intersection imbedding and contact mutually to support (referring to Fig. 5), play antitorque and reduce back stagnant risk, guarantee dustproof tighter.
Lens supports body and base adopt equally distributed support, realize the support of balance more.
Base adopts metal to embed reinforcement mode, and group enters after main body iron-clad, can adopt laser bonding by main body iron-clad, stator iron-clad, and base metal insert welds together together or only welds main body iron-clad and stator iron-clad.Owing to avoiding using glue, strength of joint to obtain larger improvement.
Except above employing laser bonding, also can adopt techniques such as an adhesive curing, hot riveting, ultrasonic soldering that main body iron-clad, stator iron-clad, base metal insert are linked together together, thereby widened the width of making technique, or only connected main body iron-clad and stator iron-clad.
Connection between lower shell fragment, pad and base also can adopt the techniques such as an adhesive curing, hot riveting, ultrasonic soldering, has widened equally the width of making technique.Simultaneously pad can adopt etching or two kinds of modes of impact briquetting, thus obtain better precision and flatness.
When terminal can adopt separation or one, separately impact briquetting, can better guarantee the precision of product, and thickness can guarantee to have enough intensity.Realize the variation of packaging technology and meet the demand of different process.
Assembling product direction, take main body iron-clad as skeleton, and all parts layer by layer group enter, and assembling direction is single, more easily realizes automatic assembling, thereby has improved production efficiency.
Claims (11)
1. a lens driver, comprising: main body iron-clad (1); Base (9); Stator iron-clad (3) and the magnetite (4) coordinating with described stator iron-clad; The lens supports body (6) that coil (5) and carrier form; Before and after wherein said lens supports body (6), both sides are respectively arranged with and support its upper shell fragment (2) moving and lower shell fragment (8) and the pad (7) to described lower shell fragment (8) pressuring action, it is characterized in that,
Described main body iron-clad (1) is with boss and as assembling skeleton, all parts can rely on described main body iron-clad (1) location assembling therein, described main body iron-clad (1) is maskable magnetic field again, wherein utilize mould punching moulding to manufacture described main body iron-clad (1) to be easy to control its size and tolerance, promote assembly precision;
Wherein said stator iron-clad (3) and described magnetite (4) form closed magnetic path, it is inner at described magnetic circuit that described coil (5) and described lens supports body (6) form rotor movement positioning parts, described coil (5) inner side is near the medial surface of described stator iron-clad (3), and outside is near the lateral surface of described magnetite (4).
2. lens driver as claimed in claim 1, it is characterized in that, there are respectively some location points of engagement (11) upper surface of described lens supports body and lower surface, to coordinate with described upper shell fragment and described lower shell fragment location respectively, so that described upper shell fragment, described lens supports body, described pad and described lower shell fragment is coaxially fixing.
3. lens driver as claimed in claim 1, is characterized in that, described lens supports body coordinates with described base is embedded.
4. lens driver as claimed in claim 1, is characterized in that, described coil and described embedded cooperation of lens supports body.
5. lens driver as claimed in claim 1, is characterized in that: described base adopts damascene molding mode to make.
6. lens driver as claimed in claim 5, is characterized in that, adopts laser bonding that the described base of damascene moulding, described main body iron-clad and described stator iron-clad are welded together jointly, or only welds described main body iron-clad and described stator iron-clad.
7. lens driver as claimed in claim 5, it is characterized in that, adopt that glue is bonding, hot riveting, ultrasonic soldering jointly link together the described base of damascene moulding, described main body iron-clad and described stator iron-clad, or only connect described main body iron-clad and described stator iron-clad.
8. lens driver as claimed in claim 1, is characterized in that, adopt glue, hot riveting or ultrasonic soldering to connect described lower shell fragment, described pad and described base, and described pad can adopt the mode of etching or punching press.
9. lens driver as claimed in claim 1, is characterized in that, the thickness of described pad is at least the twice of described lower shell fragment thickness.
10. lens driver as claimed in claim 1, is characterized in that, also comprises some terminals (10), and described terminal is plastic on described pad.
11. lens drivers as claimed in claim 10, is characterized in that, described terminal is plastic on described lower shell fragment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320382256.4U CN203480108U (en) | 2013-01-31 | 2013-06-28 | Lens driving device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310038626 | 2013-01-31 | ||
| CN201310038626.7 | 2013-01-31 | ||
| CN201320382256.4U CN203480108U (en) | 2013-01-31 | 2013-06-28 | Lens driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203480108U true CN203480108U (en) | 2014-03-12 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310268025.5A Active CN103345032B (en) | 2013-01-31 | 2013-06-28 | Lens driver |
| CN201320382256.4U Expired - Lifetime CN203480108U (en) | 2013-01-31 | 2013-06-28 | Lens driving device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310268025.5A Active CN103345032B (en) | 2013-01-31 | 2013-06-28 | Lens driver |
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| Country | Link |
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| CN (2) | CN103345032B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103345032A (en) * | 2013-01-31 | 2013-10-09 | 林聪� | Lens driving device |
| CN107040111A (en) * | 2016-02-04 | 2017-08-11 | 台湾东电化股份有限公司 | Electromagnetic driving module and lens driving device using same |
| CN108591212A (en) * | 2018-07-24 | 2018-09-28 | 深圳市米成电子有限公司 | The connection structure of shrapnel and lens barrel under a kind of VCM |
| TWI675230B (en) * | 2014-08-06 | 2019-10-21 | 日商三美電機股份有限公司 | Lens holder driving device and camera-equipped mobile terminal |
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| CN104149228B (en) * | 2014-07-08 | 2016-08-24 | 中国电子科技集团公司第二十研究所 | The integrated molding mould of a kind of fiberglass radome and forming method |
| CN104914547A (en) * | 2015-06-18 | 2015-09-16 | 河南省皓泽电子有限公司 | Novel voice coil motor lens driving device |
| DE102015217499A1 (en) * | 2015-09-14 | 2017-03-16 | Conti Temic Microelectronic Gmbh | Connection device for a camera module, camera module and method for contacting a camera module |
| JP7009055B2 (en) * | 2016-10-26 | 2022-01-25 | Tdk株式会社 | Lens drive device |
| CN107329228A (en) * | 2017-08-23 | 2017-11-07 | 上海比路电子股份有限公司 | A kind of lens supports body for camera gun drive device |
| CN110829785B (en) * | 2018-08-07 | 2021-08-24 | 三赢科技（深圳）有限公司 | Voice coil motor and manufacturing method thereof |
| CN111193346A (en) * | 2018-11-15 | 2020-05-22 | 三赢科技（深圳）有限公司 | Voice coil motor |
| CN110045479B (en) * | 2019-04-25 | 2024-04-16 | 上海比路电子股份有限公司 | Motor structure and image pickup device |
| CN114624851A (en) * | 2020-12-11 | 2022-06-14 | 晋城三赢精密电子有限公司 | Voice coil motor device, lens module and electronic device |
| CN112600360B (en) * | 2020-12-14 | 2022-04-12 | 基合半导体（宁波）有限公司 | Focusing motor, closed-loop control method of focusing motor and camera equipment |
Family Cites Families (6)
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| CN101943786B (en) * | 2009-07-03 | 2014-06-18 | 德昌电机(深圳)有限公司 | Lens driving device |
| JP2011164505A (en) * | 2010-02-15 | 2011-08-25 | Panasonic Corp | Lens driving device |
| CN102570762B (en) * | 2010-12-29 | 2015-09-09 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| JP6030287B2 (en) * | 2011-06-08 | 2016-11-24 | 日本電産サンキョー株式会社 | Lens driving device and method of manufacturing lens driving device |
| CN202710824U (en) * | 2012-05-23 | 2013-01-30 | 金龙机电股份有限公司 | Upper spring component applied to lens driving device |
| CN103345032B (en) * | 2013-01-31 | 2016-08-10 | 林聪� | Lens driver |
-
2013
- 2013-06-28 CN CN201310268025.5A patent/CN103345032B/en active Active
- 2013-06-28 CN CN201320382256.4U patent/CN203480108U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345032A (en) * | 2013-01-31 | 2013-10-09 | 林聪� | Lens driving device |
| CN103345032B (en) * | 2013-01-31 | 2016-08-10 | 林聪� | Lens driver |
| TWI675230B (en) * | 2014-08-06 | 2019-10-21 | 日商三美電機股份有限公司 | Lens holder driving device and camera-equipped mobile terminal |
| CN107040111A (en) * | 2016-02-04 | 2017-08-11 | 台湾东电化股份有限公司 | Electromagnetic driving module and lens driving device using same |
| CN107040111B (en) * | 2016-02-04 | 2019-07-26 | 台湾东电化股份有限公司 | Electromagnetic driving module and lens driving device using same |
| CN108591212A (en) * | 2018-07-24 | 2018-09-28 | 深圳市米成电子有限公司 | The connection structure of shrapnel and lens barrel under a kind of VCM |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103345032B (en) | 2016-08-10 |
| CN103345032A (en) | 2013-10-09 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HENAN HAOZE ELECTRONICS Co.,Ltd. Assignor: Lin Cong Contract record no.: 2014410000069 Denomination of utility model: Lens driving device Granted publication date: 20140312 License type: Exclusive License Record date: 20140723 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| TR01 | Transfer of patent right | ||
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Effective date of registration: 20171204 Address after: 454000 Henan city of Jiaozuo province Mengzhou City West Guo High-tech Zone in the courtyard Patentee after: HENAN HAOZE ELECTRONICS Co.,Ltd. Address before: Songjiang District Chedun town industry road 201611 Shanghai City No. 16 room 105 Patentee before: Lin Cong |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 454000 Henan city of Jiaozuo province Mengzhou City West Guo High-tech Zone in the courtyard Patentee after: Henan haoze Electronic Co.,Ltd. Address before: 454000 Henan city of Jiaozuo province Mengzhou City West Guo High-tech Zone in the courtyard Patentee before: HENAN HAOZE ELECTRONICS Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 454000 Henan city of Jiaozuo province Mengzhou City West Guo High-tech Zone in the courtyard Patentee after: Henan haoze Electronic Co.,Ltd. Address before: 454000 Henan city of Jiaozuo province Mengzhou City West Guo High-tech Zone in the courtyard Patentee before: HENAN HAOZE ELECTRONICS Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
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Granted publication date: 20140312 |