CN203084270U - A lens driving motor - Google Patents
A lens driving motor Download PDFInfo
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- CN203084270U CN203084270U CN 201320019970 CN201320019970U CN203084270U CN 203084270 U CN203084270 U CN 203084270U CN 201320019970 CN201320019970 CN 201320019970 CN 201320019970 U CN201320019970 U CN 201320019970U CN 203084270 U CN203084270 U CN 203084270U
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- lens
- rear side
- reed
- side reed
- clad
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Abstract
The utility model discloses a lens driving motor. The lens driving motor comprises a pedestal and a magnet yoke iron housing disposed in cooperation with the pedestal. A magnet and a lens carrier equipped with a coil are disposed in the magnet yoke iron housing. A front reed and a back reed are disposed on the front side and the back side of the lens carrier, respectively. The lens driving motor is characterized in that multiple bosses are disposed on the inner side surface of the pedestal, and that the surfaces of the bosses contact the back reed in order to generate precompression on the back reed. When the lens driving motor is mounted, certain precompression is performed on the back reed by the fall between the bosses and the inner side surface of the pedestal so as to achieve stable motor in a motioning process. In addition, the precompression has a good effect on the control of the starting current of the motor.
Description
Technical field
The utility model relates to lens driver, steps on the equipment and moves the lens CD-ROM drive motor of focusing to drive camera lens thereby be specifically related to a kind of mobile phone that is applied to camera, video camera or has a camera function.
Background technology
Along with the functional diversities of digital product, the digital equipment of video camera or camera is equipped with, as mobile phone, multimedia player etc., obtain high speed development and widespread use.Above-mentioned video camera or camera can adopt the adjustable focal length or the automatic camera lens of focusing usually, and the process of regulating then is the position that changes camera lens, are used to drive camera lens and move and normally use CD-ROM drive motor.
Its drive unit of focusing of traditional camera generally includes stepper motor, gear, member such as cam and connecting rod is formed, as the disclosed a kind of lens construction of stablizing automatic focus function that has of 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 is arranged 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 numerous parts such as motor, two gears, housing, screw inclined plane, projection, camera lens module, make that the size of camera is bigger, therefore driven loads is difficult to adapt to the trend of the new connection smallization of dress.
In order to adapt to the requirement of camera miniaturization, adopt a kind of drive unit that utilizes magnetic field to produce power more and more.At Chinese utility model patent number is in a kind of lens driver of ZL200410017724.3 in the disclosed scheme, comprise that one is installed in the tubular magnet yoke ring on the base, be mounted with magnetite and coil in this magnet yoke ring, all sides are provided with the lens of band lens supports body in this coil; Described magnetite and coil are placed in this magnet yoke ring inside, on the periphery of this coil stationary lens supports body of all sides in this magnet yoke ring, this lens supports body stretches in the described tubular magnet yoke ring and can move in this magnet yoke ring, described lens driver also comprises the front side reed and the rear side reed of annular, fixedly connected with the front side of described magnet yoke ring in their outer circumferential side end, also has a small cap, this small cap is fixed on all side ends in the reed of described front side on the described lens supports body front side, also have a framework, this framework is fixed on reed outer circumferential side end, described front side on the front side of described magnet yoke ring.
The said lens drive unit utilizes the electromagnetic induction effect of magnetite, make the lens supports body that is placed in the magnet yoke ring centre be subjected to parallel electromagnetic force effect and produce displacement, the front side reed and the rear side reed that are placed in the lens supports body simultaneously produce reacting force, when electromagnetic force on acting on the lens supports body and reed elastic force reached balance, this lens supports body remained on certain position; Be that the electromagnetic force that is produced behind the described coil electricity resists mutually in the acting force of described front side reed and rear side reed, order about described lens supports body and move to optical axis direction.
Though the said lens drive unit can move by both sides reed restriction lens supports body before and after it, makes it to have anti-jolting and impact property and the good image quality of tool.But this lens driver is still stable inadequately in operational process.
Summary of the invention
The purpose of this utility model provides the more stable lens CD-ROM drive motor of a kind of motion.
To achieve these goals, the technical solution of the utility model is: a kind of lens CD-ROM drive motor, comprise base, the yoke iron-clad that is equipped with base, be provided with magnetite and the lens carrier that is arranged with coil in the yoke iron-clad, the front side of lens carrier and rear side are respectively equipped with front side reed and rear side reed, it is characterized in that the front side reed is arranged between lens carrier front end and the yoke iron-clad front end, the rear side reed then is arranged between lens carrier rear end and the yoke iron-clad rear end, the medial surface of described base is provided with the polylith boss, boss surface contacts with described rear side reed, and the rear side reed is produced precompression.In installation, utilize the drop between described boss and the base medial surface that described rear side reed is produced certain precompression, make motor more stable in motion process, simultaneously, the control for motor start-up current plays a good role.
According to specific embodiment of the utility model, the outside of described camera lens carrier is provided with anti-rotating latch, and the correspondence position of yoke iron-clad is provided with it the anti-rotation notch that cooperates, with the dislocation that prevents lens carrier with move.Described lens CD-ROM drive motor is outside equipped with shielding case, and described shielding case is provided with the snap close that matches with base, and this shielding case has ground connection electrostatic prevention and electromagnetic shielding action in the outside connection procedure of motor.Described rear side reed is provided with binding post, and is provided with heat insulating lamella between rear side reed and the yoke iron-clad.
The principle of this CD-ROM drive motor action is the principle by faraday's lefft-hand rule, and electrified wire is generation power in magnetic field, utilizes this displacing force to finish promotion to the camera lens carrier.In motion process, be subjected to the effect of front side reed and rear side reed simultaneously, the intrinsic thrust of spring force and motor is the relation of acting force and reacting force.The boss that the utility model utilizes base produces certain precompression to the rear side reed, gives certain reacting force to the motion of motor, improves the stability of motor motion, keeps the linear uniform motion or the stationary state of motor.Increase the effect of its electrostatic prevention and electromagnetic screen by adding shielding case simultaneously, also strengthened the stability and the reliability of motor motion to a certain extent.Therefore, advantage of the present utility model has been to improve the stability of this lens CD-ROM drive motor motion.
Description of drawings
Fig. 1 is the explosion figure of the utility model one embodiment.
Fig. 2 is the cut-open view of this embodiment.
Fig. 3 is the cut-open view behind state rotation 45 degree among Fig. 2.
Fig. 4 is the structural representation of base.Wherein Fig. 4 a is that the lateral surface of base is the rear side end view, and Fig. 4 b is that the medial surface of base is the anterior end surface synoptic diagram.
Fig. 5 is the structural representation of rear side reed.
Fig. 6 is the structural representation of heat insulating lamella.
Fig. 7 is the structural representation of camera lens carrier.
Fig. 8 is the structural representation of yoke iron-clad.
Fig. 9 is a connection diagram between coil and the camera lens carrier.
Figure 10 is the structural representation of front side reed.
Figure 11 is the structural representation of protecgulum.
Figure 12 is the structural representation of shielding case.
Embodiment
Below in conjunction with accompanying drawing and example the utility model is elaborated.
As shown in Figure 1, a kind of lens CD-ROM drive motor comprises base 1, rear side reed 2, heat insulating lamella 3, lens carrier 4, coil 5, yoke iron-clad 6, front side reed 7, protecgulum 8 and shielding case 9.
As shown in Figures 2 and 3, be provided with magnetite 10 and the lens carrier 4 that is arranged with coil 5 in the yoke iron-clad 6, the front side of lens carrier 4 and rear side are respectively equipped with front side reed 7 and rear side reed 2, wherein front side reed 7 is arranged between lens carrier 4 front ends and yoke iron-clad 6 front ends, 2 of rear side reeds are arranged between lens carrier 4 rear ends and yoke iron-clad 6 rear ends, be used to limit lens carrier and move, make it to have anti-jolting and impact property.Described lens CD-ROM drive motor is outside equipped with shielding case 9, and described shielding case is provided with the snap close that matches with base, and this shielding case has ground connection electrostatic prevention and electromagnetic shielding action in the outside connection procedure of motor.After radome adds, can significantly reduce motor coil when work, the signal interference to the mobile phone high-frequency model has strengthened speech quality.Behind the Shielding Case grounding with motor, can prevent static and other fricative static that stop signal produces, cause the damage of motor.
Fig. 4 is the structural representation of base 1, and wherein Fig. 4 a is that the lateral surface of base is the rear side end view, and Fig. 4 b is that the medial surface of base is the anterior end surface synoptic diagram.Shown in Fig. 4 b, in order to improve the stability of described lens CD-ROM drive motor motion, respectively establish a boss 11 around the medial surface of described base, described rear side reed 2 contacts with boss 11 surfaces, utilize the drop between described boss 11 and the base medial surface that described rear side reed 2 is produced certain precompression, make motor more stable in motion process, simultaneously, control for motor start-up current plays a good role.Obtain through test, when the difference in height between described boss 11 and the base medial surface is 20 ~ 100 microns, when mounted described rear side reed is produced the precompression of 2 ~ 100mg, the optimal stability of lens CD-ROM drive motor motion at this moment.Owing on the rear side leaf spring, increased precompression, increased after groups of springs is contained on the carrier greatly and the applying degree of base, reduced mechanical clearance, made things convenient for the assembling consistance of back road module manufacturer, rebound after avoiding producing the focal length adjustment, reduced and done over again.Bilateral gives pressure finally can better control the stability of motor in motion process, avoids producing non homing problem behind the carrier movement.In common motor volume production, what embody is that the consistance of motor performance integral body distributes more a lot than original little.Superior having significantly reduced the time of mobile phone when focus function of stability, the minimizing time also can reduce power consumption greatly, reaches and kills two birds with one stone.
Fig. 5 is the structural representation of rear side reed 2.As shown in the figure, this rear side reed 2 is made up of left and right sides two parts, and every part is provided with a binding post 12, and described two parts are connected with coil 5 respectively, are used to feed the electric current of different directions.In the utility model, utilize the binding post of rear side reed to be connected with coil, be connected energising with coil than direct coil electricity by reed, the tap line fracture that can avoid motor to clash in test causing motor, cause motor function to lose efficacy, taking when producing for convenience in addition, as shown in Figure 5, be respectively equipped with Π shape portion 17 in the reed both sides.
Fig. 6 is the structural representation of heat insulating lamella 3.Heat insulating lamella 3 is arranged between rear side reed 2 and the yoke iron-clad 6, makes two part electricity of rear side reed isolate.
Fig. 7 and Fig. 8 are respectively the structural representation of camera lens carrier 4 and yoke iron-clad 6, as shown in the figure, be provided with anti-rotating latch 13 in the outside of described camera lens carrier 4, the correspondence position of yoke iron-clad 6 is provided with it the anti-rotation notch 14 that cooperates, with the dislocation that prevents lens carrier with move.
Fig. 9 is a connection diagram between coil 5 and the camera lens carrier 4.As shown in Figure 9, coil 5 directly is wrapped in outside the camera lens carrier 4.In the prior art, coil uses glue to fix usually, because or the variation of management process conditions causes the intensity of glue is not fine, cause coil to come off from carrier, cause motor coil when or impulse test is fall-down test to come off, cause motor failure, in the utility model, coil directly is wrapped in the camera lens carrier then can addresses this problem well outward.
Figure 10 is the structural representation of front side reed 7.The outer end of front side reed 7 and yoke iron-clad 6 front ends are fixed, and inner and lens carrier 4 front ends are fixed.
Figure 11 is the structural representation of protecgulum 8.Protecgulum 8 is enclosed within outside the front end of camera lens carrier 4.
Figure 12 is the structural representation of shielding case 9.The rear end of described shielding case 9 is provided with snap close 15, with the locked groove 16(of base 1 shown in Fig. 4 a) match, cooperate with base 1 to have automatic snap close function, in the outside connection procedure of motor, ground connection electrostatic prevention and electromagnetic shielding action are arranged simultaneously.
Claims (6)
1. lens CD-ROM drive motor, comprise base, the yoke iron-clad that is equipped with base, be provided with magnetite and the lens carrier that is arranged with coil in the yoke iron-clad, the front side of lens carrier and rear side are respectively equipped with front side reed and rear side reed, it is characterized in that the front side reed is arranged between lens carrier front end and the yoke iron-clad front end, the rear side reed then is arranged between lens carrier rear end and the yoke iron-clad rear end, the medial surface of described base is provided with the polylith boss, boss surface contacts with described rear side reed, and the rear side reed is produced precompression.
2. by the described lens CD-ROM drive motor of claim 1, it is characterized in that: when the difference in height between described boss (11) and the base medial surface is 20 ~ 100 microns, utilize drop between described boss and the base medial surface described rear side reed to be produced the precompression of 2 ~ 100mg when mounted.
3. by the described lens CD-ROM drive motor of claim 1, it is characterized in that: described lens CD-ROM drive motor is outside equipped with shielding case.
4. by the described lens CD-ROM drive motor of claim 3, it is characterized in that: described shielding case is provided with the snap close that matches with base.
5. by the described lens CD-ROM drive motor of claim 1, it is characterized in that: the outside of described camera lens carrier is provided with anti-rotating latch, and the correspondence position of yoke iron-clad is provided with the anti-rotation notch that cooperates with it.
6. by the described lens CD-ROM drive motor of claim 1, it is characterized in that: described rear side reed is provided with binding post, and is provided with heat insulating lamella between rear side reed and the yoke iron-clad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019970 CN203084270U (en) | 2013-01-15 | 2013-01-15 | A lens driving motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019970 CN203084270U (en) | 2013-01-15 | 2013-01-15 | A lens driving motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203084270U true CN203084270U (en) | 2013-07-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320019970 Expired - Lifetime CN203084270U (en) | 2013-01-15 | 2013-01-15 | A lens driving motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203084270U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064168A (en) * | 2013-01-15 | 2013-04-24 | 上海比路电子有限公司 | Lens driving motor |
| CN113885272A (en) * | 2021-05-18 | 2022-01-04 | 荣耀终端有限公司 | Driving device, camera module and electronic equipment |
-
2013
- 2013-01-15 CN CN 201320019970 patent/CN203084270U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064168A (en) * | 2013-01-15 | 2013-04-24 | 上海比路电子有限公司 | Lens driving motor |
| CN113885272A (en) * | 2021-05-18 | 2022-01-04 | 荣耀终端有限公司 | Driving device, camera module and electronic equipment |
| CN113885272B (en) * | 2021-05-18 | 2024-04-12 | 荣耀终端有限公司 | Driving device, camera module and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Tianchen road Qingpu Industrial Park Qingpu District of Shanghai City, No. 2009, 201799 Patentee after: SHANGHAI B.L ELECTRONICS Co.,Ltd. Address before: Shanghai city Qingpu District Jiasong road 201711 Lane 4588 No. 18 Patentee before: SHANGHAI BILU ELECTRONIC Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Lens driving motor Effective date of registration: 20190909 Granted publication date: 20130724 Pledgee: Anxin Agricultural Insurance Co., Ltd. Shanghai Minhang Branch Co. Pledgor: SHANGHAI B.L ELECTRONICS Co.,Ltd. Registration number: Y2019980000132 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201112 Granted publication date: 20130724 Pledgee: Anxin Agricultural Insurance Co., Ltd. Shanghai Minhang Branch Co. Pledgor: SHANGHAI B.L ELECTRONICS Co.,Ltd. Registration number: Y2019980000132 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |
|
| CX01 | Expiry of patent term |