CN102967912B - Lens driving device - Google Patents
Lens driving device Download PDFInfo
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- CN102967912B CN102967912B CN201210004139.4A CN201210004139A CN102967912B CN 102967912 B CN102967912 B CN 102967912B CN 201210004139 A CN201210004139 A CN 201210004139A CN 102967912 B CN102967912 B CN 102967912B
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- shell fragment
- lens
- lens carrier
- coil
- magnetite
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Abstract
The invention discloses a lens driving device. The lens driving device comprises a casing, a lens carrier, a magnet assembly, a coil, an upper elastic piece and a lower elastic piece, wherein the lens carrier, the magnet assembly, the coil, the upper elastic piece and the lower elastic piece are arranged in the casing, the lens carrier is arranged between the upper elastic piece and the lower elastic piece, the magnet assembly is arranged on 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 adhered to and fixed on the outer wall of the lens carrier through glue, and a glue containing groove which is used for containing the redundant glue is arranged on the outer wall of the lens carrier. The lens driving device is reasonable and compact in structure, and magnetic conducting rings in traditional lens driving devices are not required, so that defects that lens carriers are eccentric due to the fact that magnetic forces of magnetic conducting rings are too strong can be avoided, the manufacturing process is simplified, and the manufacturing cost can be effectively reduced.
Description
Technical field
The present invention relates to a kind of lens driver, specifically a kind of be applied to camera, video camera or on the equipment such as the mobile phone with camera function to drive lens moving thus the lens driving apparatus of focusing.
Background technology
Its drive unit of focusing of traditional camera generally includes stepper motor, gear, the component such as cam and connecting rod forms, as Chinese patent literature CN2938165Y discloses a kind of lens construction with stable automatic focusing function, comprise housing, motor, first gear, second gear, camera lens module and elastic parts, described motor is arranged in this housing, described first gear to arrange in this housing and is fixed on the axle center of this motor, described second gear to be arranged in this housing and vertically to mesh together with this first gear, 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 contacted 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, and make the size of camera comparatively large, transmission is complicated, is therefore difficult to the trend adapting to 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, as Chinese patent literature CN201035200Y discloses a kind of lens driver, comprise one be arranged on the square contour with band circular hole on base and hold concurrently as the magnet yoke ring of the outside basket of lens driver, magnetite and coil is mounted with in this magnet yoke ring, be provided with the lens of band one lens carrier in the circular hole of magnet yoke ring, the front and back of this lens carrier are respectively 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 magnetic field coil being placed in magnetite generation, makes its driving being subject to electromagnetic force thus drives the lens carrier be fixed together with it to move, lens are driven into preposition to coil electricity.Due to this device, without the need to driving tools such as motor, gear, cam, screw rods, therefore volume is little, and makes with assembly technology simple.But the technical scheme disclosed by above-mentioned patent documentation, the magnetic line of force that magnetite produces comparatively disperses, and the magnetic induction density in coil is less, makes driving also less with the electromagnetic force of the carrier of camera lens.Make it reach the object driven with the carrier of camera lens, need the length increasing coil or the electric current strengthened in coil, and the length increasing coil just will inevitably strengthen the size of drive unit.Therefore, general manufacturer is all the method adopting the electric current strengthened in coil at present, and this just causes the waste of energy.And the magnetic circuit of lens driver is through a pole of magnetite to collar extension, then gets back to another pole of magnetite along collar extension.Namely described magnetic circuit relies on collar extension, and these needs retain certain space between magnetite and coil, between coil and carrier, and this is unfavorable for the structural design of drive unit to obtain compacter, is also unfavorable for fixing between coil and carrier.In addition, in the process of lens supports body along optical axis direction movement, be vulnerable to radial power and rock, what cause lens to photograph is image blurring.
Summary of the invention
The object of this invention is to provide the lens driving apparatus that a kind of structure is comparatively reasonable, performance is comparatively reliable and stable.
The technical scheme realizing the object of the invention is: a kind of lens driver, comprises housing, and arranges lens carrier, magnetite assembly, coil, upper shell fragment and lower shell fragment in the housing; Described lens carrier is arranged between shell fragment and lower shell fragment, and described magnetite assembly is arranged on lens carrier periphery; Described coil is arranged between magnetite assembly and lens carrier; The inwall of described coil is bonded and fixed on 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 such scheme, described lens carrier outer wall is provided with the positioning boss radially protruded, and the bottom of described lower coil is arranged on positioning boss.
In such scheme, described glue groove is just arranged coil inwall.
In such scheme, also comprise shell fragment support and lower insulation spacer; Described housing comprises upper cover that permeability magnetic material makes and the base that insulating material is made; Described upper shell fragment Bracket setting is between upper shell fragment and upper lid top wall, and described lower insulation spacer is arranged between lower shell fragment and base.
In such scheme, described magnetite assembly comprises and is multiplely positioned at conplane magnetite, and each magnetite lines up ring-type, leaves gap between two adjacent magnetites, each magnetite is a kind of magnetic pole close to the medial extremity of lens carrier, is being another magnetic pole in the radial direction away from lens carrier.
In such scheme, described upper shell fragment comprise be positioned at corner place four fixed areas, for being fixed on inner ring district in lens carrier, connecting multiple elastic arm district in corresponding fixed area and inner ring district and be connected the reinforcement plate of adjacent two fixed areas, each reinforcement plate is perpendicular to fixed area place plane.
In such scheme, described upper shell fragment also comprises the bonding pad for connecting adjacent two fixed areas, and described each bonding pad and fixed area are positioned at same plane.
In such scheme, described reinforcement plate exceeds fixed area place plane; Described each reinforcement plate is between the neighboring and the sidewall of upper cover of upper shell fragment support, or described each reinforcement plate is arranged in the open-work of shell fragment support.
The present invention has positive effect:
(1) structure of the present invention is comparatively rationally compact, no longer need the magnetic guiding loop in conventional lenses drive unit, thus avoid occurring, because magnetic guiding loop magnetic force crosses the disadvantage of the lens carrier bias caused by force, to not only simplify manufacturing process, also effectively reduce manufacturing cost.In addition because lens carrier outer wall is provided with glue groove, when coil is bonded and fixed on lens carrier outer wall, unnecessary glue can be accommodated, effectively overcome because glue too much overflows all drawbacks brought.
(2) the upper shell fragment in the present invention comprises the reinforcement plate connecting adjacent two fixed areas, each reinforcement plate is perpendicular to fixed area place plane, this reinforcement plate can not improve on the basis of area occupied, the intensity of shell fragment in effective raising, make it when installation operates, not easily there is deformation set, effectively improve yield rate, thus reduce manufacturing cost to a certain extent.Especially by employing reinforcement plate frame mode, the area occupied of shell fragment can also be effectively reduced, thus reduce overall volume.
Accompanying drawing explanation
Fig. 1 is a kind of perspective view of the first structure of the present invention;
Fig. 2 is for voice coil motor shown in Fig. 1 is from a kind of perspective view during another angle views;
A kind of cut-open view that Fig. 3 is voice coil motor shown in Fig. 1;
A kind of explosive view that Fig. 4 is voice coil motor shown in Fig. 1;
Fig. 5 is a kind of perspective view of shell fragment upper in voice coil motor shown in Fig. 1;
Fig. 6 is a kind of perspective view of upper shell fragment in the second structure of the present invention.
Be labeled as shown in accompanying drawing: housing 1, upper cover 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, inner ring 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 shows the first embodiment of the present invention, and wherein Fig. 1 is a kind of perspective view of the first structure of the present invention; Fig. 2 is for voice coil motor shown in Fig. 1 is from a kind of perspective view during another angle views; A kind of cut-open view that Fig. 3 is voice coil motor shown in Fig. 1; A kind of explosive view that Fig. 4 is voice coil motor shown in Fig. 1; Fig. 5 is a kind of perspective view of shell fragment upper in voice coil motor shown in Fig. 1.
The present embodiment is a kind of lens driver, sees Fig. 1 to Fig. 5, comprises housing 1, and arranges 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 within the case 1; Described lens carrier 2 is arranged between shell fragment 5 and lower shell fragment 6, and described magnetite assembly 3 is arranged on lens carrier 2 periphery; Described coil 4 is arranged between magnetite assembly 3 and lens carrier 2.
Described housing 1 comprises upper cover 11 that permeability magnetic material makes and the base 12 that insulating material is made; Described upper shell fragment support 7 is arranged between shell fragment 5 and upper cover 11 roof, and described lower insulation spacer 8 is arranged between lower shell fragment 6 and base 12.
In the present embodiment, described magnetite assembly 3 comprises and is multiplely positioned at conplane magnetite 31, and each magnetite 31 lines up ring-type, leaves gap between two adjacent magnetites 31, each magnetite 31 is a kind of magnetic poles close to 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 wall is provided with the positioning boss 21 radially protruded, and the bottom of described lower coil is arranged on positioning boss 21.
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.Described glue groove 22 is just arranged coil 4 inwall.
Described upper shell fragment 5 comprise be positioned at corner place four fixed areas 51, for being fixed on inner ring district 52 in lens carrier 2, connecting multiple elastic arm district 53 in corresponding fixed area 51 and inner ring district 52 and be connected the reinforcement plate 54 of adjacent two fixed areas 51, each reinforcement plate 54 is perpendicular to fixed area 51 place plane.
Described reinforcement plate 54 exceeds fixed area 51 place plane; Described each reinforcement plate 54 is between the neighboring and the sidewall 111 of upper cover 11 of upper shell fragment support 7, or 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 neighboring place 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 also comprises the bonding pad 55 for connecting adjacent two fixed areas 51, and described each bonding pad 55 is positioned at same plane with fixed area 51.
The fixed area 51 of described reinforcement plate 54 and upper shell fragment 5, inner ring district 52 and elastic arm district 53 adopt same sheet material to make, and described reinforcement plate 54 is made by this sheet material portions plate body of bending.
(embodiment 2)
Fig. 6 is a kind of perspective view of upper shell fragment in the second structure of the present invention, shows the second embodiment of the present invention.
The present embodiment is substantially the same manner as Example 1, and difference is: described upper shell fragment 5 is no longer arranged the bonding pad 55 for connecting adjacent two fixed areas 51, is provided with the gap 511 for being cut off by 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 conventional lenses drive unit, thus avoids occurring, because magnetic guiding loop magnetic force crosses the disadvantage of the lens carrier bias caused by force, to not only simplify manufacturing process, also effectively reduce manufacturing cost.
(2) upper shell fragment comprises the reinforcement plate connecting adjacent two fixed areas, each reinforcement plate is perpendicular to fixed area place plane, this reinforcement plate can not improve on the basis of area occupied, the intensity of shell fragment in effective raising, make it when installation operates, not easily there is deformation set, effectively improve yield rate, thus reduce manufacturing cost to a certain extent.Especially by employing reinforcement plate frame mode, the area occupied of shell fragment can also be effectively reduced, thus reduce overall volume.
(3) lens carrier outer wall is provided with glue groove, when coil is bonded and fixed on lens carrier outer wall, can accommodate unnecessary glue, effectively overcomes because glue too much overflows all drawbacks brought.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And these belong to connotation of the present invention the apparent change of extending out or variation still belong to protection scope of the present invention.
Claims (6)
1. a lens driver, comprise housing (1), and be arranged on lens carrier (2), magnetite assembly (3), coil (4), upper shell fragment (5) and the lower shell fragment (6) in housing (1); Described lens carrier (2) is arranged between shell fragment (5) and 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 lens carrier (2); The inwall of described coil (4) is bonded and fixed on lens carrier (2) outer wall by glue, described lens carrier (2) outer wall is provided with the positioning boss (21) radially protruded, the outer wall of described positioning boss (21) forms some axially extended glue grooves for accommodating surplus glue (22), the bottom of described coil is arranged on positioning boss (21), and described glue groove (22) is just arranged coil (4) inwall.
2. 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 upper cover (11) that permeability magnetic material makes and the base (12) that insulating material is made; Described upper shell fragment support (7) is arranged between shell fragment (5) and upper cover (11) roof, and described lower insulation spacer (8) is arranged between lower shell fragment (6) and upper cover (11).
3. lens driver according to claim 2, it is characterized in that: described magnetite assembly (3) comprises and is multiplely positioned at conplane magnetite (31), each magnetite (31) lines up ring-type, gap is left between adjacent two magnetites (31), each magnetite (31) is a kind of magnetic pole close to the medial extremity of lens carrier (2), is being another magnetic pole in the radial direction away from lens carrier (2).
4. lens driver according to claim 3, it is characterized in that: described upper shell fragment (5) comprise be positioned at corner place four fixed areas (51), for being fixed on inner ring district (52) in lens carrier (2), connecting multiple elastic arm district (53) of corresponding fixed area (51) and inner ring district (52) and be connected the reinforcement plate (54) of adjacent two fixed areas (51), each reinforcement plate (54) is perpendicular to fixed area (51) place plane.
5. lens driver according to claim 4, it is characterized in that: described upper shell fragment (5) also comprises the bonding pad (55) for connecting adjacent two fixed areas (51), described each bonding pad (55) and fixed area (51) are positioned at same plane.
6. lens driver according to claim 5, is characterized in that: described reinforcement plate (54) exceeds fixed area (51) place plane; Described each reinforcement plate (54) is positioned between the neighboring of shell fragment support (7) and the sidewall (111) of upper cover (11), or 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 |
|---|---|---|---|
| CN201210004139.4A CN102967912B (en) | 2012-01-09 | 2012-01-09 | Lens driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210004139.4A CN102967912B (en) | 2012-01-09 | 2012-01-09 | Lens driving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102967912A CN102967912A (en) | 2013-03-13 |
| CN102967912B true CN102967912B (en) | 2015-07-22 |
Family
ID=47798176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210004139.4A Active CN102967912B (en) | 2012-01-09 | 2012-01-09 | Lens driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102967912B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10451891B2 (en) | 2014-10-17 | 2019-10-22 | Lg Innotek Co., Ltd. | Lens moving apparatus |
| CN106338803A (en) * | 2015-07-14 | 2017-01-18 | 宁波舜宇光电信息有限公司 | Glue coating method used in AA manufacturing process and application thereof in camera-shooting module |
| CN112332631A (en) * | 2020-11-26 | 2021-02-05 | 新思考电机有限公司 | Lens driving structure, camera device and electronic equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101038361A (en) * | 2007-04-27 | 2007-09-19 | 金仁召 | Lens driving device |
| CN201045630Y (en) * | 2007-06-05 | 2008-04-09 | 亚洲光学股份有限公司 | Rotor set for scanning motor |
| 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 |
| CN101488698A (en) * | 2009-02-23 | 2009-07-22 | 李俊 | Voice coil type focus motor |
| CN101997382A (en) * | 2009-08-19 | 2011-03-30 | 鸿富锦精密工业（深圳）有限公司 | Elastic sheet and voice coil motor |
| CN202710823U (en) * | 2012-01-09 | 2013-01-30 | 金龙机电股份有限公司 | Lens drive device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1471730A1 (en) * | 2003-03-31 | 2004-10-27 | Dialog Semiconductor GmbH | Miniature camera module |
| KR20100100063A (en) * | 2009-03-05 | 2010-09-15 | 삼성전기주식회사 | Camera module |
| TWI427902B (en) * | 2009-05-08 | 2014-02-21 | Hon Hai Prec Ind Co Ltd | Voice coil motor |
| TWI467263B (en) * | 2009-07-15 | 2015-01-01 | Hon Hai Prec Ind Co Ltd | Lens module |
| 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 |
-
2012
- 2012-01-09 CN CN201210004139.4A patent/CN102967912B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101038361A (en) * | 2007-04-27 | 2007-09-19 | 金仁召 | Lens driving device |
| CN201045630Y (en) * | 2007-06-05 | 2008-04-09 | 亚洲光学股份有限公司 | Rotor set for scanning motor |
| 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 |
| CN101488698A (en) * | 2009-02-23 | 2009-07-22 | 李俊 | Voice coil type focus motor |
| CN101997382A (en) * | 2009-08-19 | 2011-03-30 | 鸿富锦精密工业（深圳）有限公司 | Elastic sheet and voice coil motor |
| CN202710823U (en) * | 2012-01-09 | 2013-01-30 | 金龙机电股份有限公司 | Lens drive device |
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| Publication number | Publication date |
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| CN102967912A (en) | 2013-03-13 |
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