CN202710823U - Lens drive device - Google Patents
Lens drive device Download PDFInfo
- Publication number
- CN202710823U CN202710823U CN201220006073.8U CN201220006073U CN202710823U CN 202710823 U CN202710823 U CN 202710823U CN 201220006073 U CN201220006073 U CN 201220006073U CN 202710823 U CN202710823 U CN 202710823U
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- Prior art keywords
- shell fragment
- lens
- lens carrier
- coil
- reinforcement plate
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Abstract
The utility model discloses a lens drive device. The lens drive device comprises a shell body as well as a lens carrier, a magnet assembly, a coil, an upper elastic sheet and a lower elastic sheet which are arranged inside the shell body. The lens carrier is arranged between the upper elastic sheet and the lower elastic sheet; the magnet assembly is arranged at the periphery of the lens carrier; the coil is arranged between the magnet assembly and the lens carrier; the inner wall of the coil is bonded and fixed on the outer wall of the lens carrier through glue; and a glue-containing groove used for containing excess glue is arranged on the outer wall of the lens carrier. 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 the lens driving apparatus of focusing to drive lens moving on the equipment such as mobile phone of camera function specifically.
Background technology
Its drive unit of focusing of traditional camera generally includes stepper motor, gear, the member such as cam and connecting rod forms, a kind of lens construction with stable automatic focusing function is disclosed such as Chinese patent literature CN2938165Y, comprise housing, motor, the first gear, the second gear, camera lens module and elastic parts, described motor is arranged in this housing, described the first gear arranges in this housing and is fixed on the axle center of this motor, described the second gear is arranged in this housing and with this first gear and vertically meshes together, the upper surface of described the 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 the second gear.Wherein relate to motor, two gears, housing, screw inclined plane and projections and camera lens module, parts are numerous, so that the size of camera is larger, transmission is complicated, therefore are 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 extensive, a kind of lens driver is disclosed such as Chinese patent literature CN201035200Y, comprise that one is installed in having with the square contour of circular hole and holding concurrently on the base 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 front side pad and rear side spring with the 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 subject to electromagnetic force drive the lens carrier that is fixed together with it to coil electricity.Because this device need not the 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, so that driving is also less with the electromagnetic force of the carrier of camera lens.Make it reach the purpose that drives with the carrier of 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 to 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, upper shell fragment and lower shell fragment in the housing; Described lens carrier is arranged between shell fragment and the lower shell fragment, and described magnetite assembly is arranged on the lens carrier periphery; Described coil is arranged between magnetite assembly and the lens carrier; 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 accommodating surplus glue.
In the such scheme, described lens carrier outer wall is provided with the positioning boss that radially protrudes, and the bottom of described coil is arranged on the positioning boss.
In the such scheme, described glue groove arranges over against the coil inwall.
In the such scheme, also comprise shell fragment support and lower insulation spacer; Described housing comprises the base that loam cake that permeability magnetic material is made and insulating material are made; Described upper shell fragment support is arranged between shell fragment and the upper lid top wall, and described lower insulation spacer is arranged between lower shell fragment and the base.
In the such scheme, described magnetite assembly comprises a plurality of conplane magnetites that are positioned at, and each magnetite is lined up ring-type, leaves 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, described upper shell fragment comprises four fixed areas being positioned at four jiaos of places, is used for being fixed on Nei Huan district, the corresponding fixed area of connection and a plurality of elastic arms district in Nei Huan district and the reinforcement plate that connects adjacent two fixed areas on the lens carrier, and each reinforcement plate is perpendicular to plane, fixed area place.
In the such scheme, described upper shell fragment comprises also that be used to the bonding pad that connects adjacent two fixed areas described each bonding pad and fixed area are positioned at same plane.
In the such scheme, described reinforcement plate exceeds plane, fixed area place; Described each reinforcement plate is between the sidewall of the neighboring of upper shell fragment support and loam cake, and perhaps described each reinforcement plate is arranged in the open-work of shell fragment support.
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 occuring 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.Because 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 in addition, effectively overcome because of glue and too much overflow all drawbacks of bringing.
(2) the upper 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, the intensity of shell fragment on the Effective Raise, make it when fitting operation, deformation set be difficult for to occur, Effective Raise yield rate, thereby reduced to a certain extent manufacturing cost.Especially by adopting the reinforcement plate frame mode, can also effectively reduce the area occupied of shell fragment, thereby reduce overall volume.
Description of drawings
Fig. 1 is a kind of perspective view of the utility model the first structure;
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 of upper shell fragment in the voice coil motor shown in Figure 1;
Fig. 6 is a kind of perspective view of upper shell fragment in the utility model the second structure.
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, upper shell fragment 5, fixed area 51, gap 511, Nei Huan district 52, elastic arm district 53, reinforcement plate 54, breach 541, bonding pad 55, lower shell fragment 6, upper shell fragment support 7, open-work 71, lower insulation spacer 8.
Embodiment
(embodiment 1)
Fig. 1 to Fig. 5 has shown the first embodiment of the present utility model, and wherein Fig. 1 is a kind of perspective view of the utility model the first structure; 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 of upper 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, upper shell fragment 5, lower shell fragment 6, upper shell fragment support 7 and lower insulation spacer 8 in the housing 1; Described lens carrier 2 is arranged between shell fragment 5 and the lower 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; Described upper shell fragment support 7 is arranged between shell fragment 5 and loam cake 11 roofs, and described lower insulation spacer 8 is arranged between lower 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 accommodating surplus glue.Described glue groove 22 is over against coil 4 inwall settings.
Described upper shell fragment 5 comprises four fixed areas 51 being positioned at four jiaos of places, is used for being fixed on Nei Huan district 52, the corresponding fixed area 51 of connection and a plurality of elastic arms district 53 in Nei Huan district 52 and the reinforcement plate 54 that connects 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 upper 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.
Described upper shell fragment 5 comprises also that be used to 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 upper shell fragment 5, and described reinforcement plate 54 is to make by this sheet material part plate body of bending.
(embodiment 2)
Fig. 6 is a kind of perspective view of upper shell fragment in the utility model the second structure, has shown the second embodiment of the present utility model.
Present embodiment is substantially the same manner as Example 1, and difference is: no longer be provided for connecting the bonding pad 55 of adjacent two fixed areas 51 on the described upper shell fragment 5, be 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 upper shell fragment 5 is also different with embodiment 1 in addition.
Above-described embodiment 1 to embodiment 2 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 occuring 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) upper shell fragment 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, the intensity of shell fragment on the Effective Raise, make it when fitting operation, deformation set be difficult for to occur, Effective Raise yield rate, thereby reduced to a certain extent manufacturing cost.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 (8)
1. a lens driver comprises housing (1), and is arranged on lens carrier (2), magnetite assembly (3), coil (4), upper shell fragment (5) and lower shell fragment (6) in the housing (1); Described lens carrier (2) is arranged between shell fragment (5) and the lower 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); 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 accommodating surplus glue.
2. lens driver according to claim 1 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 coil is arranged on the positioning boss (21).
3. lens driver according to claim 1, it is characterized in that: described glue groove (22) is over against coil (4) inwall setting.
4. lens driver according to claim 1 is characterized in that: also comprise shell fragment support (7) and lower 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; Described upper shell fragment support (7) is arranged between shell fragment (5) and loam cake (11) roof, and described lower insulation spacer (8) is arranged between lower shell fragment (6) and the base (12).
5. lens driver according to claim 4, 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).
6. lens driver according to claim 1, it is characterized in that: described upper shell fragment (5) comprises four fixed areas (51) of being positioned at four jiaos of places, be used for being fixed on Nei Huan district (52) on the lens carrier (2), connect a plurality of elastic arms district (53) of corresponding fixed area (51) and Nei Huan district (52) and the reinforcement plate (54) that connects adjacent two fixed areas (51), and each reinforcement plate (54) is perpendicular to fixed area (51) plane, place.
7. lens driver according to claim 6, it is characterized in that: described upper shell fragment (5) comprises also that be used to 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).
8. lens driver according to claim 7, 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 |
|---|---|---|---|
| CN201220006073.8U CN202710823U (en) | 2012-01-09 | 2012-01-09 | Lens drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220006073.8U CN202710823U (en) | 2012-01-09 | 2012-01-09 | Lens drive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202710823U true CN202710823U (en) | 2013-01-30 |
Family
ID=47591109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220006073.8U Expired - Fee Related CN202710823U (en) | 2012-01-09 | 2012-01-09 | Lens drive device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202710823U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967912A (en) * | 2012-01-09 | 2013-03-13 | 金龙机电股份有限公司 | Lens driving device |
| CN112415706A (en) * | 2015-08-31 | 2021-02-26 | Lg伊诺特有限公司 | Lens driving device, camera module and optical instrument |
-
2012
- 2012-01-09 CN CN201220006073.8U patent/CN202710823U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967912A (en) * | 2012-01-09 | 2013-03-13 | 金龙机电股份有限公司 | Lens driving device |
| CN102967912B (en) * | 2012-01-09 | 2015-07-22 | 金龙机电股份有限公司 | Lens driving device |
| CN112415706A (en) * | 2015-08-31 | 2021-02-26 | Lg伊诺特有限公司 | Lens driving device, camera module and optical instrument |
| US11754802B2 (en) | 2015-08-31 | 2023-09-12 | Lg Innotek Co., Ltd. | Lens driving unit, camera module, and optical instrument |
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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: 20130130 Termination date: 20210109 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |