CN103529536B - Actuator and the camera model with the actuator - Google Patents
Actuator and the camera model with the actuator Download PDFInfo
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- CN103529536B CN103529536B CN201210233046.9A CN201210233046A CN103529536B CN 103529536 B CN103529536 B CN 103529536B CN 201210233046 A CN201210233046 A CN 201210233046A CN 103529536 B CN103529536 B CN 103529536B
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- movable frame
- base
- actuator
- sma wire
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Abstract
The present invention relates to a kind of actuator, it includes base, fixed frame, movable frame and driving unit.Fixed frame is fixedly arranged on base, and movable frame is contained in fixed frame and is carried on base.Movable frame include one towards base supporting surface.Driving unit includes SMA wire, controller, position sensor and guide bar.SMA wire includes the bending part between the both ends, and bending part is contradicted with supporting surface, and guide bar is through movable frame and is fixed on base.Controller drives movable frame to be moved along guide bar for applying electric current heating SMA wire to change the length of SMA wire.Position sensor is used to sense the position of movable frame and sensing result is transmitted to controller.Controller is additionally operable to adjust the size of electric current according to sensing result.
Description
Technical field
The present invention relates to imaging field, more particularly to a kind of actuator and the camera model with the actuator.
Background technology
With the fast development of mechanics of communication, camera model is widely used in the portable electronics such as mobile phone by people and sets
In standby.In order to improve the picture quality captured by camera model, camera model generally all has zoom function, and has and can drive
Camera model carries out the actuator of zoom.
There are a variety of actuators in prior art, one of which actuator is marmem（Shape Memory
Alloy, SMA）Actuator, however, the focusing precision of shape memory alloy actuator is not high.
The content of the invention
In view of this, it is necessary to which a kind of actuator of achievable exact focus and the camera mould with the actuator are provided
Block.
A kind of actuator, it includes base, fixed frame, movable frame and driving unit.The fixed frame is fixedly arranged on described
On base, the movable frame is contained in the fixed frame and is carried on the base.The movable frame includes one towards institute
State the supporting surface of base.The driving unit includes SMA wire, controller, position sensor and guide bar.The two of the SMA wire
End is fixed on the fixed frame, and the SMA wire includes the bending part between the both ends, and the bending part is supported with described
Face contradicts, and the guide bar is through the movable frame and is fixed on the base.The controller is used to apply electric current heating
SMA wire drives the movable frame to be moved along the guide bar to change the length of SMA wire.The position sensor is used to sense
Sensing result is simultaneously transmitted to the controller by the position of the movable frame.The controller is additionally operable to according to the sensing result
Adjust the size of the electric current.
A kind of camera model, it includes actuator and lens unit as described above, and the lens unit is contained in described
In movable frame.
Compared to prior art, the actuator and the camera model have position sensor simultaneously can be according to position sensing
The sensing result adjustment control electric current of device, so as to improve focusing precision.
Brief description of the drawings
Fig. 1 is the schematic perspective view of camera model provided by the invention.
Fig. 2 is the decomposition diagram of the camera model in Fig. 1.
Fig. 3 is the III-III of the camera model in Fig. 1 to sectional view.
Primary clustering symbol description
| Camera model | 100 |
| Actuator | 200 |
| Base | 10 |
| Light hole | 101 |
| Upper surface | 102 |
| Protrusive board | 103 |
| Pillar | 104 |
| Mounting hole | 105 |
| Positioning column | 106 |
| Location hole | 107 |
| Shrapnel | 11 |
| Lug | 111 |
| Through hole | 112 |
| Fixed frame | 12 |
| The first side wall | 120 |
| Second sidewall | 121 |
| Holding tank | 122 |
| Sliding slot | 123 |
| Pillar | 124 |
| Holding tank | 125 |
| Bit-avoiding slot | 126 |
| Receiving hole | 127 |
| Laser direct forming line (LDS lines） | 128 |
| Movable frame | 14 |
| Outer surface | 140 |
| Sliding block | 141 |
| Lug | 142 |
| Holding tank | 143 |
| Supporting surface | 144 |
| Through hole | 145 |
| Lens unit | 15 |
| Lens barrel | 150 |
| Eyeglass | 151 |
| Driving unit | 16 |
| Circuit board | 160 |
| Controller | 161 |
| Position sensor | 162 |
| Magnet | 163 |
| Resistance clamping piece | 164 |
| Shape memory alloy wire（SMA wire） | 165 |
| Guide bar | 166 |
| Holding tank | 167 |
| Plumb joint | 168 |
| Mounting hole | 169 |
| Elastic component | 170 |
Following embodiment will combine above-mentioned attached drawing and further illustrate the present invention.
Embodiment
Please refer to Fig.1 to Fig.3, be the camera model 100 of an embodiment of the present invention.The camera model 100 includes causing
Dynamic device 200 and lens unit 15.It is single that the actuator 200 includes base 10, shrapnel 11, fixed frame 12, movable frame 14 and driving
Member 16.
The base 10 is substantially in tabular.The center of the base 10 offers circular light hole 101.It is described
Base 10 includes upper surface 102.One corner of the upper surface 102 is formed on the protrusive board 103 formed with protrusive board 103
There is pillar 104.Another corner of the upper surface 102 opposite with the pillar 104 forms a mounting hole 105.On described
Respectively formed with positioning column 106 and location hole 107 at other two corner on surface 104.
The shrapnel 11 is in round, and the internal diameter of shrapnel 11 is more than the diameter of light hole 101.It is symmetrically formed on the shrapnel 11
There are two lugs 111, a through hole 112 is formed on each lug 111.
The 12 substantially square tubular of fixed frame, including two the first side walls 120 and two adjacent to each other are adjacent to each other
Second sidewall 121.Formed with holding tank 122 on the first side wall 120.The first side wall 120 and the second sidewall 121
Between corner madial wall on formed with sliding slot 123.Formed with two pillars on the outer surface of each second sidewall 121
124 and a holding tank 125.The pillar 124 extends close to the first side wall 120, the holding tank 125 from the pillar 124
To another second sidewall 121.The lower part of corner between two second sidewalls 121 formed with bit-avoiding slot 126, top formed with
Receiving hole 127, receiving hole 127 are stepped hole.It is also formed with swashing at pillar 124 on the outer surface of each second sidewall 121
Light straight forming line（LDS, Laser Direct Structuring）128, each LDS lines 128 extend from second sidewall 121
To corresponding the first side wall 120.Location hole formed with corresponding base upper positioning column 106 on the bottom surface of the fixed frame 12 and right
Answer the positioning column of location hole 107（It is not shown）.
The 14 generally circular tubular of movable frame, movable frame 14 is interior to house lens unit 15, in the present embodiment, mirror
Head unit 15 and movable frame 14 are fixed together by way of screw thread is spirally connected.Lens unit 15 includes lens barrel 150 and is contained in
Eyeglass 151 in lens barrel 150.Slided on the outer surface 140 of movable frame 14 formed with two sliding blocks 141 relative to each other, one positioned at two
Arc step shape lug 142 between block 141, and a holding tank 143 opposite with lug 142.Formed with one side on lug 142
To the supporting surface 144 of base 10.Formed with a ladder hole 145 in lug 142.
The driving unit 16 includes circuit board 160, controller 161, the position sensor being installed on circuit board 160
162nd, magnet 163, two resistance clamping pieces 164, a shape memory alloy wire（Shape Memory Alloy, SMA）165th, one lead
Draw 166 and one elastic component 170 of bar.Wherein, in the present embodiment, position sensor 162 is Hall magnetic sensor.Resistance
Clamping piece 164 is metallic conduction shrapnel, formed with the holding tank 167 formed through metal bending and through gold on resistance clamping piece 164
Belong to the plumb joint 168 extended to form, mounting hole 169 is also formed with resistance clamping piece 164.Elastic component 170 is spring.
Upon assembly, shrapnel 11 is placed on base 10 so that pillar 104 passes through a through hole 112 of shrapnel 11, guide bar
166 pass through another through hole 112 of shrapnel 11 to enter in the mounting hole 105 of base 10, so that shrapnel 11 is fixed on base 10；
Magnet 163 is fixed in the holding tank 143 of movable frame 14 by adhesive type, movable frame 14 is fixed on bullet by adhesive means
On piece 11 so that guide bar 166 is placed on guide bar through the ladder hole 145 on the lug 142 of movable frame 14, elastic component 170
On 166,170 part of elastic component is placed in ladder hole 145；Fixed frame 12 is placed on base 10 so that sliding block 141 is placed in
In sliding slot 123, lug 142 is placed in bit-avoiding slot 126, and guide bar 166 passes through receiving hole 127, by adhesive means by fixed frame
12 are fixed on base 10；Two resistance clamping pieces 164 are fixed on fixed frame 12 by the cooperation of mounting hole 169 and pillar 124
On, the plumb joint 168 of resistance clamping piece 164 is connected by the method for welding with LDS lines 128；SMA wire 165 is placed in fixed frame
In 12 holding tank 125, the both ends of SMA wire 165 are clamped in the holding tank 167 of resistance clamping piece 164 respectively, 165 liang of SMA wire
Part bending between end bypasses the lug 142 of movable frame 14 and is contradicted with supporting surface 144；Circuit board 160 is fixed on fixation
On frame 12, position sensor 162 is opposite with magnet 163 through holding tank 122, and circuit board 160 passes through welding manner and LDS lines
128 connections, so that the assembling of finish actuator 200.
When start, controller 161 provide driving current, drive current through LDS lines 128, resistance clamping piece 164 and add
Hot SMA wire 165, SMA wire 165 is heated to be shortened, so as to drive movable frame 14 to be moved to the direction away from base 10, so as to complete to become
It is burnt.Due to the limitation of guide bar 166 and through hole 145 so that movable frame 14 can only be moved along the direction that guide bar 166 extends,
So as to which the present invention only needs using a SMA wire movable frame 14 can be driven to complete zoom.
The length and temperature that SMA wire 165 is shunk have correspondence, however, due to the influence of environment temperature, even if giving
SMA wire 165 applies identical driving current, and the heated degree difference of SMA wire 165 is also resulted in when environment temperature is different,
The degree difference shunk so as to SMA wire 165.In order to realize accurate zoom, present invention uses position sensor 162.Movable
In the moving process of frame 14, position sensor 162 senses the change of magnetic field strength for the magnet 163 being fixed in movable frame 14, from
And the change in location of movable frame 14 is sensed, and result is returned into controller 161, controller 161 is adjusted according to sensing result and driven
Streaming current, so as to fulfill exact focus.For example, when the distance that movable frame 14 moves exceedes preset distance, controller 161 is reduced
Driving current, so that SMA wire 165 is elongated, so as to control movable frame 14 to be moved to preset distance；When by the predetermined time
When movable frame 14 has not moved into preset distance, controller 161 increases driving current, so that SMA wire 165 further contracts
It is short, so as to control movable frame 14 to be moved to preset distance.
When movable frame 14 is to away from the movement of 10 direction of base, 11 applied elongation of shrapnel, 170 forced compression of elastic component.When
When controller 161 stops providing driving current, the cooling elongation of SMA wire 165,170 elastic recovery of shrapnel 11 and elastic component, so as to drive
Movable frame 14 is set to return to initial position.
It is appreciated that the fixed frame 12 is not limited to present embodiment is fixedly arranged on the base 10 by glued mode
On, it can also be fixedly arranged on by snap fit on the base 10.
It is appreciated that the position sensor 162 is not limited to the Hall magnetic sensor of present embodiment, it may be used also
To be other types of position sensor, such as photoelectrical position sensor.
In short, those skilled in the art are it should be appreciated that the embodiment of the above is intended merely to explanation originally
Invention, and be not used as limitation of the invention, as long as within the spirit of the present invention, to above example institute
The appropriate change and variation made all falls within the scope of protection of present invention.
Claims (9)
1. a kind of actuator, it includes base, fixed frame, movable frame and driving unit, and the fixed frame is fixedly arranged on the bottom
On seat, the movable frame is contained in the fixed frame and is carried on the base, its improvement is that the movable frame includes
One towards the base supporting surface；The driving unit includes SMA wire, controller, position sensor and guide bar；It is described
The both ends of SMA wire are fixed on the fixed frame, and the SMA wire includes the bending part between the both ends, the bending part
Contradicted with the supporting surface, the guide bar is through the movable frame and is fixed on the base；The controller is used to apply
Electric current heating SMA wire is added to drive the movable frame to be moved along the guide bar to change the length of SMA wire；The position sensing
Device is used to sense the position of the movable frame and sensing result is transmitted to the controller；The controller is additionally operable to according to institute
State the size that sensing result adjusts the electric current；One corner of the upper surface of the base is formed with protrusive board, the protrusive board
On formed with pillar, another corner of the upper surface opposite with the pillar forms a mounting hole；The actuator is also
Including a connection base and the shrapnel of the movable frame, the shrapnel is in round, and it is prominent that two have been symmetrically formed on the shrapnel
Ear, forms a through hole on each lug, and the pillar passes through a through hole of the shrapnel, and the guide bar is another through shrapnel
Through hole enters in the mounting hole of base.
2. actuator as claimed in claim 1, wherein, the fixed frame is fixedly arranged on the base by glued mode.
3. actuator as claimed in claim 1, wherein, the one end of the guide bar away from the base passes through the fixation
Frame.
4. actuator as claimed in claim 3, wherein, elastic component is cased with the guide bar, the elastic component supports respectively
The fixed frame and the movable frame.
5. actuator as claimed in claim 1, wherein, the position sensor is fixed on the fixed frame, the position
Sensor is Hall magnetic sensor, the driving unit further include in the movable frame and with the position sensor phase
To magnet.
6. actuator as claimed in claim 1, wherein, the driving unit further includes resistance clamping piece, the resistance clamping
Part is fixed on the fixed frame, and the both ends of the SMA wire are held on the resistance clamping piece.
7. actuator as claimed in claim 6, wherein, the resistance clamping piece passes through laser direct forming with the controller
Line connects.
8. a kind of camera model, it includes actuator and lens unit as claimed in claim 1, and the lens unit is contained in
In the movable frame.
9. camera model as claimed in claim 8, wherein, the lens unit includes lens barrel and is contained in the lens barrel it
Eyeglass.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210233046.9A CN103529536B (en) | 2012-07-06 | 2012-07-06 | Actuator and the camera model with the actuator |
| CN201810135205.9A CN108196352A (en) | 2012-07-06 | 2012-07-06 | A kind of method using actuator exact focus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210233046.9A CN103529536B (en) | 2012-07-06 | 2012-07-06 | Actuator and the camera model with the actuator |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810135205.9A Division CN108196352A (en) | 2012-07-06 | 2012-07-06 | A kind of method using actuator exact focus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103529536A CN103529536A (en) | 2014-01-22 |
| CN103529536B true CN103529536B (en) | 2018-05-08 |
Family
ID=49931680
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810135205.9A Pending CN108196352A (en) | 2012-07-06 | 2012-07-06 | A kind of method using actuator exact focus |
| CN201210233046.9A Active CN103529536B (en) | 2012-07-06 | 2012-07-06 | Actuator and the camera model with the actuator |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810135205.9A Pending CN108196352A (en) | 2012-07-06 | 2012-07-06 | A kind of method using actuator exact focus |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN108196352A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9791713B2 (en) | 2014-07-24 | 2017-10-17 | Lg Innotek Co., Ltd. | Lens moving apparatus |
| CN107111212B (en) * | 2014-11-12 | 2019-11-12 | 艾斯科技公司 | Camera module auto-focusing actuator and its control method |
| CN206584105U (en) * | 2016-04-01 | 2017-10-24 | 台湾东电化股份有限公司 | Lens driving mechanism |
| WO2017181387A1 (en) * | 2016-04-21 | 2017-10-26 | 深圳市大疆创新科技有限公司 | Unmanned aircraft and camera assembly |
| KR102505436B1 (en) * | 2016-06-17 | 2023-03-03 | 삼성전기주식회사 | Apparatus for controlling position of lens module and camera module including the same |
| WO2018011857A1 (en) * | 2016-07-11 | 2018-01-18 | オリンパス株式会社 | Endoscope device |
| CN108627947B (en) * | 2018-06-26 | 2024-01-30 | 惠州萨至德光电科技有限公司 | Lens driving device |
| WO2020243855A1 (en) * | 2019-06-01 | 2020-12-10 | 瑞声光学解决方案私人有限公司 | Lens assembly |
| WO2020243862A1 (en) * | 2019-06-01 | 2020-12-10 | 瑞声光学解决方案私人有限公司 | Lens assembly |
| CN112887521B (en) * | 2019-11-30 | 2022-07-26 | 华为技术有限公司 | Camera module and electronic equipment |
| CN114721107A (en) * | 2022-05-16 | 2022-07-08 | 上海信迈电子科技有限公司 | Optical element driving device, image pickup device, and mobile terminal |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207603A (en) * | 2010-03-29 | 2011-10-05 | 精工电子有限公司 | Drive module and electronic device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101910903B (en) * | 2008-01-15 | 2013-08-07 | 柯尼卡美能达精密光学株式会社 | Driving device made of shape-memory alloy |
| US8279541B2 (en) * | 2009-12-10 | 2012-10-02 | New Scale Technologies | Lens actuator module |
-
2012
- 2012-07-06 CN CN201810135205.9A patent/CN108196352A/en active Pending
- 2012-07-06 CN CN201210233046.9A patent/CN103529536B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207603A (en) * | 2010-03-29 | 2011-10-05 | 精工电子有限公司 | Drive module and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103529536A (en) | 2014-01-22 |
| CN108196352A (en) | 2018-06-22 |
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Effective date of registration: 20170927 Address after: Guangdong province Shenzhen city Longhua District Dalang street community of Longsheng gold dragon road e-commerce incubator exhibition Tao Commercial Plaza E block 706 Applicant after: Shenzhen step Technology Transfer Center Co., Ltd. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Applicant before: Hongfujin Precise Industry (Shenzhen) Co., Ltd. Applicant before: Hon Hai Precision Industry Co., Ltd. |
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Effective date of registration: 20180411 Address after: 450019 intelligent terminal mobile phone industrial park, building 5 and 6, at the intersection of Xingang road and Renmin Road, Zhengzhou, Henan, China. C Applicant after: Henan cool beauty Intelligent Technology Co., Ltd. Address before: 518000 Guangdong Province, Shenzhen New District of Longhua City, Dalang street, Longsheng Gold Dragon Road community e-commerce incubator exhibition Tao Commercial Plaza E block 706 Applicant before: Shenzhen step Technology Transfer Center Co., Ltd. |
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Effective date of registration: 20210602 Address after: 450000 intelligent terminal (mobile phone) Industrial Park, Zhengzhou Airport Economic Comprehensive Experimental Zone, Zhengzhou City, Henan Province Patentee after: Zhengzhou Lianchuang Electronics Co., Ltd Address before: 450019 Building 5 and 6, area C, smart terminal mobile phone industrial park, intersection of Xingang Avenue and Renmin Road, HANGGANG District, Zhengzhou City, Henan Province Patentee before: Henan cool beauty Intelligent Technology Co.,Ltd. |