CN203054326U - Lens driving device - Google Patents
Lens driving device Download PDFInfo
- Publication number
- CN203054326U CN203054326U CN201320005522.1U CN201320005522U CN203054326U CN 203054326 U CN203054326 U CN 203054326U CN 201320005522 U CN201320005522 U CN 201320005522U CN 203054326 U CN203054326 U CN 203054326U
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- coil
- shell fragment
- lens
- magnetite
- lens carrier
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Abstract
. The lens drive device of the utility model which is of reasonable and compact structure dose not need a magnetic conductive ring in a traditional lens drive, and therefore, a defect of the eccentricity of the lens carrier caused by the overly strong magnetic force of the magnetic conductive ring can be eliminated, thereby simplifying manufacturing process and effectively reducing manufacturing cost.
Description
Technical field
The utility model relates to a kind of lens driver, thereby is a kind ofly to be applied to camera, video camera or to have on the equipment such as mobile phone of camera function move the lens driving apparatus of focusing to drive camera lens specifically.
Background technology
Its drive unit of focusing of traditional camera generally includes stepper motor, gear, member such as cam and connecting rod is formed, a kind of lens construction of stablizing automatic focus function that has is disclosed as Chinese patent literature CN2938165Y, comprise housing, motor, first gear, second gear, camera lens module and elastic parts, described motor is arranged in this housing, described first gear arranges in this housing and is fixed on the axle center of this motor, described second gear is arranged in this housing and with this first gear and vertically meshes together, the upper surface of described second gear has a helical ramp, described camera lens module is arranged in this housing, and camera lens module has a projection that contacts with the helical ramp of second gear.Wherein relate to motor, two gears, housing, screw inclined plane and projections and camera lens module, parts are numerous, make that the size of camera is bigger, and therefore the transmission complexity is difficult to adapt to the trend of camera miniaturization.
For adapting to the needs of camera miniaturization, the drive unit that a kind of employing utilizes magnetic field to produce power uses more and more widely, a kind of lens driver is disclosed as Chinese patent literature CN201035200Y, comprise that one is installed in the square contour with band circular hole on the base and holds concurrently and is the magnet yoke ring of the outside basket of lens driver, be mounted with magnetite and coil in this magnet yoke ring, be provided with the lens with a lens carrier in the circular hole of magnet yoke ring, the front and back of this lens carrier respectively are provided with the front side spring of band front side pad and the rear side spring of band rear side pad.The principle of this technical scheme is the magnetic field that places magnetite to produce coil, moves, lens are driven into preposition thereby make its driving that is subjected to electromagnetic force drive the lens carrier that is fixed together with it to coil electricity.Because this device need not transmission instrument such as motor, gear, cam, screw rod so volume is little, and making and assembly technology are simple.But the technical scheme that above-mentioned patent documentation is disclosed, the magnetic line of force that magnetite produces comparatively disperses, and the magnetic induction density in the coil is less, makes that the electromagnetic force that drives the carrier that has camera lens is also less.Make it reach the purpose that drives the carrier that has camera lens, need to increase the length of coil or the electric current in the increasing coil, and the length of increase coil just will inevitably strengthen the size of drive unit.Therefore, at present general manufacturer adopts the method that strengthens the electric current in the coil, and this has just caused the waste of energy.And the magnetic circuit of lens driver be through the utmost point of magnetite to collar extension, get back to another utmost point of magnetite along collar extension again.Be that described magnetic circuit relies on collar extension to finish, this need be between magnetite and the coil, keep certain space between coil and the carrier, and it is compacter that this is unfavorable for that structural design with drive unit gets, and also is unfavorable for fixing between coil and the carrier.In addition, in the process that the lens supports body moves along optical axis direction, be vulnerable to power radially and rock, what cause that lens photograph is image blurring.
The utility model content
The purpose of this utility model provide a kind of structure comparatively rationally, the comparatively reliable and stable lens driving apparatus of performance.
The technical scheme that realizes the utility model purpose is: a kind of lens driver comprises housing, and is arranged on lens carrier, magnetite assembly, coil, last shell fragment and following shell fragment in the housing; Described lens carrier is arranged between shell fragment and the following shell fragment, and described magnetite assembly is arranged on the lens carrier periphery; Described coil is arranged between magnetite assembly and the lens carrier.
In the such scheme, also comprise shell fragment support and following insulation spacer; Described housing comprises the base that loam cake that permeability magnetic material is made and insulating material are made; The described shell fragment support of going up is arranged between shell fragment and the last lid top wall, and described insulation spacer down is arranged on down between shell fragment and the base.
In the such scheme, first kind of scheme of described magnetite assembly is: comprise a plurality of conplane magnetites that are positioned at, each magnetite is lined up ring-type, leave the gap between the two adjacent magnetites, each magnetite is a kind of magnetic pole near the medial extremity of lens carrier, is being another magnetic pole in the radial direction away from lens carrier;
In the such scheme, second kind of scheme of described magnetite assembly is: comprise double-deck a plurality of magnetites of arranging in the form of a ring up and down, line up ring-type with a plurality of magnetites in the layer, with leaving the gap between two adjacent in the layer magnetites; The upper end of each magnetite is the S utmost point in the magnetite of described upper strata, and the lower end is the N utmost point; The upper end of each magnetite of lower floor is the N utmost point, and the lower end is the S utmost point; Described each coil comprises coil and lower coil, and the described coil of going up is arranged on directly over the lower coil, and goes up between coil and the lower coil and leave the gap.
In the such scheme, described lens carrier outer wall is provided with the positioning boss that radially protrudes, and the bottom of described lower coil is arranged on the positioning boss.
In the such scheme, the inwall of described coil is bonded and fixed on the lens carrier outer wall by glue, and the outer wall of described lens carrier is provided with the glue groove for ccontaining surplus glue.
In the such scheme, described glue groove arranges over against the coil inwall.
In the such scheme, the described clearance distance of going up between coil and the lower coil is the stroke distances of this lens driver lens carrier.
In the such scheme, the described shell fragment of going up comprises four fixed areas being positioned at four jiaos of places, is used for being fixed on Nei Huan district, connection respective fixation district and a plurality of elastic arms district in Nei Huan district and the reinforcement plate that is connected adjacent two fixed areas on the lens carrier, and each reinforcement plate is perpendicular to plane, fixed area place.
In the such scheme, the described shell fragment of going up comprises that also described each bonding pad and fixed area are positioned at same plane for the bonding pad that connects adjacent two fixed areas.
In the such scheme, described reinforcement plate exceeds plane, fixed area place; Described each reinforcement plate is between the sidewall of the neighboring of last shell fragment support and loam cake, and perhaps described each reinforcement plate is arranged in the open-work of shell fragment support.
In the such scheme, described each reinforcement plate is positioned at the place, neighboring of each fixed area, leaving certain gaps uncovered by the economic plan between two adjacent reinforcement plates.
In the such scheme, the fixed area of described reinforcement plate and last shell fragment, Nei Huan district and elastic arm district adopt same sheet material to make, and described reinforcement plate is to make by this sheet material part plate body of bending.
In the such scheme, be provided with the gap that cuts off for adjacent two fixed areas between described each fixed area.
The utlity model has positive effect:
(1) the utility model structure is comparatively rationally compact, no longer need the magnetic guiding loop in the conventional lenses drive unit, thereby avoid taking place to cross because of magnetic guiding loop magnetic force the disadvantage of the lens carrier off-centre that causes by force, not only simplified manufacturing process, also effectively reduce manufacturing cost.
(2) the last shell fragment in the utility model comprises the reinforcement plate that connects adjacent two fixed areas, each reinforcement plate is perpendicular to plane, fixed area place, this reinforcement plate can be on the basis of not improving area occupied, effectively improve the intensity that goes up shell fragment, make it when fitting operation, be difficult for deformation set takes place, effectively improved yield rate, thereby reduced manufacturing cost to a certain extent.Especially by adopting the reinforcement plate frame mode, can also effectively reduce the area occupied of shell fragment, thereby reduce overall volume.
(3) the lens carrier outer wall in the utility model is provided with glue groove, when coil being bonded and fixed on the lens carrier outer wall, can accommodate unnecessary glue, effectively overcomes because of glue too much to overflow all drawbacks of bringing.
Description of drawings
Fig. 1 is a kind of perspective view of first kind of structure of the utility model;
A kind of perspective view of Fig. 2 when to be voice coil motor shown in Figure 1 from another angle observe;
Fig. 3 is a kind of cut-open view of voice coil motor shown in Figure 1;
Fig. 4 is a kind of explosive view of voice coil motor shown in Figure 1;
Fig. 5 is a kind of perspective view that goes up shell fragment in the voice coil motor shown in Figure 1;
Fig. 6 is a kind of cut-open view of second kind of structure of the utility model;
Fig. 7 is a kind of perspective view of magnetite assembly shown in Figure 6;
Fig. 8 is a kind of perspective view that goes up shell fragment in the third structure of the utility model.
Be labeled as shown in the accompanying drawing: housing 1, loam cake 11, sidewall 111, base 12, lens carrier 2, positioning boss 21, glue groove 22, magnetite assembly 3, magnetite 31, coil 4, last coil 41, lower coil 42, last shell fragment 5, fixed area 51, gap 511, Nei Huan district 52, elastic arm district 53, reinforcement plate 54, breach 541, bonding pad 55, following shell fragment 6, last shell fragment support 7, open-work 71, following insulation spacer 8.
Embodiment
(embodiment 1)
Fig. 1 to Fig. 5 has shown first kind of embodiment of the present utility model, and wherein Fig. 1 is a kind of perspective view of first kind of structure of the utility model; A kind of perspective view of Fig. 2 when to be voice coil motor shown in Figure 1 from another angle observe; Fig. 3 is a kind of cut-open view of voice coil motor shown in Figure 1; Fig. 4 is a kind of explosive view of voice coil motor shown in Figure 1; Fig. 5 is a kind of perspective view that goes up shell fragment in the voice coil motor shown in Figure 1.
Present embodiment is a kind of lens driver, sees Fig. 1 to Fig. 5, comprises housing 1, and is arranged on lens carrier 2, magnetite assembly 3, coil 4, last shell fragment 5, following shell fragment 6, last shell fragment support 7 and following insulation spacer 8 in the housing 1; Described lens carrier 2 is arranged between shell fragment 5 and the following shell fragment 6, and described magnetite assembly 3 is arranged on lens carrier 2 peripheries; Described coil 4 is arranged between magnetite assembly 3 and the lens carrier 2.
Described housing 1 comprises the base 12 that loam cake 11 that permeability magnetic material is made and insulating material are made; The described shell fragment support 7 of going up is arranged between shell fragment 5 and loam cake 11 roofs, and described insulation spacer 8 down is arranged on down between shell fragment 6 and the base 12.
In the present embodiment, described magnetite assembly 3 comprises a plurality of conplane magnetites 31 that are positioned at, and each magnetite 31 is lined up ring-type, leaves the gap between the two adjacent magnetites 31, each magnetite 31 is a kind of magnetic poles near the medial extremity of lens carrier 2, is being another magnetic pole in the radial direction away from lens carrier 2;
Described lens carrier 2 outer walls are provided with the positioning boss 21 that radially protrudes, and the bottom of described coil is arranged on the positioning boss 21.
The inwall of described coil 4 is bonded and fixed on lens carrier 2 outer walls by glue, and the outer wall of described lens carrier 2 is provided with the glue groove 22 for ccontaining surplus glue.Described glue groove 22 is over against coil 4 inwall settings.
The described shell fragment 5 of going up comprises four fixed areas 51 being positioned at four jiaos of places, is used for being fixed on Nei Huan district 52, connection respective fixation district 51 and a plurality of elastic arms district 53 in Nei Huan district 52 and the reinforcement plate 54 that is connected adjacent two fixed areas 51 on the lens carrier 2, and each reinforcement plate 54 is perpendicular to plane, fixed area 51 place.
Described reinforcement plate 54 exceeds plane, fixed area 51 place; Described each reinforcement plate 54 is between the sidewall 111 of the neighboring of last shell fragment support 7 and loam cake 11, and perhaps described each reinforcement plate 54 is arranged in the open-work 71 of shell fragment support 7.
Described each reinforcement plate 54 is positioned at the place, neighboring of each fixed area 51, leaving certain gaps uncovered by the economic plan 541 between two adjacent reinforcement plates 54.
The described shell fragment 5 of going up comprises also that for the bonding pad 55 that connects adjacent two fixed areas 51 described each bonding pad 55 is positioned at same plane with fixed area 51.
Described reinforcement plate 54 adopts same sheet material to make with fixed area 51, Nei Huan district 52 and the elastic arm district 53 of last shell fragment 5, and described reinforcement plate 54 is to make by this sheet material part plate body of bending.
(embodiment 2)
Fig. 6 and Fig. 7 have shown second kind of embodiment of the present utility model, and wherein, Fig. 6 is a kind of cut-open view of second kind of structure of the utility model; Fig. 7 is a kind of perspective view of magnetite assembly shown in Figure 6.
Present embodiment is substantially the same manner as Example 1, and difference is: described magnetite assembly 3 comprises double-deck a plurality of magnetites 31 of arranging in the form of a ring up and down, lines up ring-type with a plurality of magnetites 31 in the layer, with leaving the gap between two adjacent in the layer magnetites 31; The upper end of each magnetite 31 is S utmost points in the described upper strata magnetite 31, and the lower end is the N utmost point; The upper end of each magnetite 31 of lower floor is N utmost points, and the lower end is the S utmost point; Described each coil 4 comprises coil and lower coil, and the described coil of going up is arranged on directly over the lower coil, and goes up between coil and the lower coil and leave the gap.The described clearance distance of going up between coil 41 and the lower coil 42 is the stroke distances of this lens driver lens carrier 2.
Described lens carrier 2 outer walls are provided with the positioning boss 21 that radially protrudes, and the bottom of described lower coil is arranged on the positioning boss 21.
(embodiment 3)
Fig. 8 is a kind of perspective view that goes up shell fragment in the third structure of the utility model, has shown the third embodiment of the present utility model.
Present embodiment is substantially the same manner as Example 1, and difference is: the described bonding pad 55 that no longer is provided for connecting adjacent two fixed areas 51 on the shell fragment 5 of going up is provided with the gap 511 that cuts off for adjacent two fixed areas 51 between described each fixed area 51.The concrete shape of described upward shell fragment 5 is also different with embodiment 1 in addition.
Above-described embodiment 1 to embodiment 3 has the following advantages:
(1) structure is comparatively rationally compact, no longer needs the magnetic guiding loop in the conventional lenses drive unit, thereby avoids taking place to cross because of magnetic guiding loop magnetic force the disadvantage of the lens carrier off-centre that causes by force, has not only simplified manufacturing process, also effectively reduces manufacturing cost.
(2) go up shell fragment and comprise the reinforcement plate that connects adjacent two fixed areas, each reinforcement plate is perpendicular to plane, fixed area place, this reinforcement plate can be on the basis of not improving area occupied, effectively improve the intensity that goes up shell fragment, make it when fitting operation, be difficult for deformation set takes place, effectively improved yield rate, thereby reduced manufacturing cost to a certain extent.Especially by adopting the reinforcement plate frame mode, can also effectively reduce the area occupied of shell fragment, thereby reduce overall volume.
(3) the lens carrier outer wall is provided with glue groove, when coil being bonded and fixed on the lens carrier outer wall, can accommodate unnecessary glue, effectively overcomes because of glue too much to overflow all drawbacks of bringing.
Obviously, above-described embodiment of the present utility model only is for the utility model example clearly is described, and is not to be restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And these belong to apparent variation or the change that connotation of the present utility model extends out and still belong to protection domain of the present utility model.
Claims (10)
1. a lens driver comprises housing (1), and is arranged on lens carrier (2), magnetite assembly (3), coil (4), last shell fragment (5) and following shell fragment (6) in the housing (1); Described lens carrier (2) is arranged between shell fragment (5) and the following shell fragment (6), and described magnetite assembly (3) is arranged on lens carrier (2) periphery; It is characterized in that: described coil (4) is arranged between magnetite assembly (3) and the lens carrier (2).
2. lens driver according to claim 1 is characterized in that: also comprise shell fragment support (7) and following insulation spacer (8); Described housing (1) comprises the base (12) that loam cake (11) that permeability magnetic material is made and insulating material are made; The described shell fragment support (7) of going up is arranged between shell fragment (5) and loam cake (11) roof, and described insulation spacer (8) down is arranged on down between shell fragment (6) and the base (12).
3. lens driver according to claim 2, it is characterized in that: described magnetite assembly (3) comprises a plurality of conplane magnetites (31) that are positioned at, each magnetite (31) is lined up ring-type, leave the gap between adjacent two magnetites (31), each magnetite (31) is a kind of magnetic pole near the medial extremity of lens carrier (2), is being another magnetic pole in the radial direction away from lens carrier (2);
Perhaps described magnetite assembly (3) comprises double-deck a plurality of magnetites (31) of arranging in the form of a ring up and down, lines up ring-type with a plurality of magnetites (31) in the layer, with leaving the gap between two magnetites (31) adjacent in the layer; The upper end of each magnetite (31) is the S utmost point in the described upper strata magnetite (31), and the lower end is the N utmost point; The upper end of each magnetite of lower floor (31) is the N utmost point, and the lower end is the S utmost point; Described each coil (4) comprises coil and lower coil, and the described coil of going up is arranged on directly over the lower coil, and goes up between coil and the lower coil and leave the gap.
4. lens driver according to claim 3 is characterized in that: described lens carrier (2) outer wall is provided with the positioning boss (21) that radially protrudes, and the bottom of described lower coil is arranged on the positioning boss (21).
5. according to the described lens driver of one of claim 1-4, it is characterized in that: the inwall of described coil (4) is bonded and fixed on lens carrier (2) outer wall by glue, and the outer wall of described lens carrier (2) is provided with the glue groove (22) for ccontaining surplus glue.
6. lens driver according to claim 5, it is characterized in that: described glue groove (22) is over against coil (4) inwall setting.
7. lens driver according to claim 3 is characterized in that: the described clearance distance of going up between coil and the lower coil is the stroke distances of this lens driver lens carrier (2).
8. lens driver according to claim 1, it is characterized in that: the described shell fragment (5) of going up comprises four fixed areas (51) of being positioned at four jiaos of places, is used for being fixed on the Nei Huan district (52) on the lens carrier (2), a plurality of elastic arms district (53) in connection respective fixation district (51) and Nei Huan district (52) and the reinforcement plate (54) that is connected adjacent two fixed areas (51), and each reinforcement plate (54) is perpendicular to fixed area (51) plane, place.
9. lens driver according to claim 5 is characterized in that: the described shell fragment (5) of going up comprises that also for the bonding pad (55) that connects adjacent two fixed areas (51), described each bonding pad (55) is positioned at same plane with fixed area (51).
10. lens driver according to claim 5, it is characterized in that: described reinforcement plate (54) exceeds fixed area (51) plane, place; Described each reinforcement plate (54) is positioned between the sidewall (111) of the neighboring of shell fragment support (7) and loam cake (11), and perhaps described each reinforcement plate (54) is arranged in the open-work (71) of shell fragment support (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320005522.1U CN203054326U (en) | 2012-01-09 | 2013-01-07 | Lens driving device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220006071 | 2012-01-09 | ||
| CN201220006071.9 | 2012-01-09 | ||
| CN201320005522.1U CN203054326U (en) | 2012-01-09 | 2013-01-07 | Lens driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203054326U true CN203054326U (en) | 2013-07-10 |
Family
ID=47967672
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320005522.1U Expired - Fee Related CN203054326U (en) | 2012-01-09 | 2013-01-07 | Lens driving device |
| CN201310004078.6A Active CN103018871B (en) | 2012-01-09 | 2013-01-07 | A kind of lens driver |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310004078.6A Active CN103018871B (en) | 2012-01-09 | 2013-01-07 | A kind of lens driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN203054326U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106873121B (en) * | 2015-12-08 | 2019-12-17 | 台湾东电化股份有限公司 | Double lens module |
| TWI615650B (en) * | 2015-12-08 | 2018-02-21 | 台灣東電化股份有限公司 | Twin-lens module |
| CN113572928B (en) * | 2021-06-30 | 2023-04-11 | 新思考电机有限公司 | Driving assembly, camera module and electronic equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201156106Y (en) * | 2008-02-03 | 2008-11-26 | 惠州市百宏微动技术工业有限公司 | Movable carrying seat for microminiaturization voice coil motor |
| JP5304060B2 (en) * | 2008-07-09 | 2013-10-02 | パナソニック株式会社 | Manufacturing method of lens actuator |
| CN101488698B (en) * | 2009-02-23 | 2014-09-10 | 李俊 | Voice coil type focus motor |
| KR101199667B1 (en) * | 2009-10-12 | 2012-11-08 | 엘지이노텍 주식회사 | Flat spring of voice coil motor and assembly method of voice coil motor using the same |
-
2013
- 2013-01-07 CN CN201320005522.1U patent/CN203054326U/en not_active Expired - Fee Related
- 2013-01-07 CN CN201310004078.6A patent/CN103018871B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103018871B (en) | 2016-03-30 |
| CN103018871A (en) | 2013-04-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20210107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |