CN104902150A - Camera electromagnetic driving structure - Google Patents
Camera electromagnetic driving structure Download PDFInfo
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- CN104902150A CN104902150A CN201510141008.4A CN201510141008A CN104902150A CN 104902150 A CN104902150 A CN 104902150A CN 201510141008 A CN201510141008 A CN 201510141008A CN 104902150 A CN104902150 A CN 104902150A
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- soft magnetic
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- carrier
- electromagnetic drive
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Abstract
The invention relates to a camera electromagnetic driving structure, wherein a carrier is suspended in a shell and is connected with the shell via a flexure strip, and a movable soft magnet is fixed on the carrier; a first incentive soft magnet and a second incentive soft magnet are fixed in the shell, and exciting coils are respectively winded on the first incentive soft magnet and the second incentive soft magnet and are connected with an external circuit; a magnetic field is generated after the exciting coils are electrified so that the first incentive soft magnet and the second incentive soft magnet can be magnetized, and the polarity of the two opposite ends of the first incentive soft magnet and the second incentive soft magnet, which are magnetized, are the same so as to magnetize the movable soft magnet. By winding the exciting coils on the first incentive soft magnet and the second incentive soft magnet to be used as a stator, and fixing the movable soft magnet on the carrier to be used as an active cell, the camera electromagnetic driving structure of the invention adds connective stability of the exciting coils and the external circuit because the exciting coils is not influenced by the movement of the carrier, and reduces the load of the carrier by fixing the movable soft magnet on the carrier so as to achieve accurate focusing.
Description
Technical field
The present invention relates to camera technical field, particularly relate to a kind of camera electromagnetic drive structures.
Background technology
Traditional mobile phone camera, normally by coil winding on carrier, by making it coil loading current to produce magnetic field, and with the permanent magnet generation interaction force of surrounding, thus carrier stress is subjected to displacement, and then drive the camera be installed on carrier to be subjected to displacement, to realize the object of focusing.
This kind, by the cell-phone camera header structure of coil winding on carrier, on the one hand, adds the heavy burden of carrier in moving process, and then the error of carrier displacement can be caused comparatively large, can not realize accurate focusing very well; On the other hand, due to needs by external circuit to coil loading current, and carrier be one motion parts, this just can increase the complexity of mobile phone camera overall construction design, can not ensure the connective stability between external circuit and coil very well.
Summary of the invention
The object of the invention is to overcome weak point of the prior art, provide one can realize accurate focusing, and increase the camera electromagnetic drive structures of the connective stability between external circuit and coil.
The object of the invention is to be achieved through the following technical solutions:
A kind of camera electromagnetic drive structures, comprising: housing, flexure strip, carrier, the first excitation soft magnetic bodies, the second excitation soft magnetic bodies and motion soft magnetic bodies;
Described carrier is suspended in described housing, and is connected with described housing by described flexure strip, and described motion soft magnetic bodies is fixed on described carrier;
Described first excitation soft magnetic bodies and described second excitation soft magnetic bodies are fixed in described housing, and described first excitation soft magnetic bodies and described second excitation soft magnetic bodies are wound with excitation coil respectively, and described excitation coil is used for being connected with external circuit;
Magnetic field is produced after described excitation coil energising, to make described first excitation soft magnetic bodies and described second excitation soft magnetic bodies magnetization, the polarity at the two ends that described first after magnetization encourages soft magnetic bodies and described second to encourage soft magnetic bodies relative is identical, and then described motion soft magnetic bodies is magnetized.
Preferably, also comprise wiring board, described wiring board is electrically connected with described excitation coil.
Preferably, also comprise induction coil, described induction coil is electrically connected with described wiring board, and described induction coil is for responding to the changes of magnetic field of described first excitation soft magnetic bodies and described second excitation soft magnetic bodies.
Preferably, described induction coil is located in described housing.
Preferably, described first excitation soft magnetic bodies and described second excitation soft magnetic bodies are all in " U " font, and the two ends and described second of described first excitation soft magnetic bodies encourage the two ends of soft magnetic bodies to be oppositely arranged respectively.
Preferably, described housing comprises Antimagnetic hood and base, and described Antimagnetic hood cover closes on described base.
Preferably, described first excitation soft magnetic bodies and described second excitation soft magnetic bodies are fixed on described base.
Preferably, described flexure strip comprises shell fragment and lower shell fragment, and the two ends of described carrier are connected with described upper shell fragment and described lower shell fragment respectively.
Preferably, described wiring board is Flexible Printed Circuit.
Camera electromagnetic drive structures, by being wound in by excitation coil in the first excitation soft magnetic bodies and the second excitation soft magnetic bodies, using as stator, by being fixed on carrier by motion soft magnetic bodies, using as mover.It can thus be appreciated that excitation coil not by the impact of carrier movement, thus adds the connective stability of excitation coil and external circuit, improves the useful life of camera electromagnetic drive structures entirety.In addition, motion soft magnetic bodies is fixed on carrier, compared to traditional by the structural design of coil winding on carrier, alleviate the heavy burden of carrier to a certain extent, carrier can be made lighter in moving process, react sensitiveer, realize accurately focusing.
Accompanying drawing explanation
Fig. 1 is the structure chart of the camera electromagnetic drive structures of one embodiment of the invention;
Fig. 2 is the explosive view of the camera electromagnetic drive structures shown in Fig. 1;
Fig. 3 is the structure chart after the camera electromagnetic drive structures removal Antimagnetic hood shown in Fig. 1;
Fig. 4 is the structure chart after the camera electromagnetic drive structures removal wiring board shown in Fig. 2;
Fig. 5 is that motion soft magnetic bodies encourages a wherein schematic diagram of the magnetic field force effect of soft magnetic bodies by the first excitation soft magnetic bodies and second;
Fig. 6 is that motion soft magnetic bodies encourages another schematic diagram of the magnetic field force effect of soft magnetic bodies by the first excitation soft magnetic bodies and second.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, it is the structure chart of the camera electromagnetic drive structures 10 of one embodiment of the invention.See also Fig. 2, it is the explosive view of the camera electromagnetic drive structures 10 shown in Fig. 1.
Camera electromagnetic drive structures 10 comprises: housing 100, flexure strip 200, carrier 30 as one kind 0, first excitation soft magnetic bodies 400, second encourages soft magnetic bodies 500, motion soft magnetic bodies 600 and excitation coil 700.
See also Fig. 3 and Fig. 4, carrier 30 as one kind 0 is suspended in housing 100, and is connected with housing 100 by flexure strip 200, and motion soft magnetic bodies 600 is fixed on carrier 30 as one kind 0.First excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500 are fixed in housing 100, and the first excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500 are wound with excitation coil 700 respectively, and excitation coil 700 is for being connected with external circuit.Magnetic field is produced after excitation coil 700 is energized, magnetize to make the first excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500, after magnetization first encourages the polarity at soft magnetic bodies 400 and the second two ends of encouraging soft magnetic bodies 500 relative identical, and then motion soft magnetic bodies 600 is magnetized.
Especially, camera electromagnetic drive structures 10 also comprises wiring board 800 and induction coil 900.Excitation coil 700 is electrically connected with wiring board 800, and wiring board 800 is for providing electric current for excitation coil 700.Induction coil 900 is electrically connected with wiring board 800, induction coil 900 is for responding to the changes of magnetic field of the first excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500, thus produce the induced current with changes of magnetic field with linear relationship, and export described faradic parameter information to wiring board 800, wiring board 800 by carrying out analyzing and processing to described parameter information, and then controls the size of current of excitation coil 700.
From the above, the operation principle of camera electromagnetic drive structures 10 is as follows:
Be excitation coil 700 input current by wiring board 800, excitation coil 700 produces magnetic field and the first excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500 is magnetized, thus make the polarity at the first excitation soft magnetic bodies 400 and the second two ends of encouraging soft magnetic bodies 500 relative identical, as shown in Figures 5 and 6, namely the first excitation soft magnetic bodies 400 and second encourages the relative two ends of soft magnetic bodies 500 be all N pole or be all S pole;
The first excitation soft magnetic bodies 400 after magnetization and the second excitation soft magnetic bodies 500 make the motion soft magnetic bodies 600 be positioned on carrier 30 as one kind 0 be magnetized, so, motion soft magnetic bodies 600 is subject to the effect of the magnetic field force of the first excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500, thus drives carrier 30 as one kind 0 to be subjected to displacement;
When wiring board 800 stops as excitation coil 700 input current, the magnetic field dissipate of excitation coil 700, the magnetic of the first excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500 also disappears thereupon, and then the magnetic of motion soft magnetic bodies 600 is disappeared, so carrier 30 as one kind 0 just resets under the effect of the elastic force of flexure strip 200;
Induction coil 900 is for responding to the change of the magnetic field size of the first excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500, the change in magnetic field and the motion of motion soft magnetic bodies 600 make induction coil 900 induced inside electric current change, and export the parameter information that described induced current changes to wiring board 800, wiring board 800 is by carrying out analyzing and processing to described parameter information, thus the size of current of regulating and controlling excitation coil 700, and then control the displacement size of carrier 30 as one kind 0, finally realize the object of quickcam image focusing.
Be noted that camera electromagnetic drive structures 10 is not limited to only arrange the first excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500, multiple soft magnetic bodies being wound with coil can also be set.As long as the polarity at the two ends that soft magnetic bodies can be made after coil electricity relative is identical, thus makes motion soft magnetic bodies 600 be magnetized, and then carrier 30 as one kind 0 is driven to be subjected to displacement.
In the present embodiment, the first excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500 are all in " U " font, and the two ends and second of the first excitation soft magnetic bodies 400 encourage the two ends of soft magnetic bodies 500 to be oppositely arranged respectively.In other embodiments, the first excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500 can also be " one " font, and make one end of the first excitation soft magnetic bodies 400 and second encourage one end of soft magnetic bodies 500 to be oppositely arranged.
Preferentially adopt the first excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500 in " U " font at this example, the overall structure of camera electromagnetic drive structures 10 can be made to become more simple, and mechanism runs more efficient.By being energized to excitation coil 700, N pole and S pole in two end band that can make the first excitation soft magnetic bodies 400, N pole and S pole in two end band that also can make the second excitation soft magnetic bodies 500, the N pole and second of the first excitation soft magnetic bodies 400 encourages the N of soft magnetic bodies 500 extremely relative, and the S pole and second of the first excitation soft magnetic bodies 400 encourages the S of soft magnetic bodies 500 extremely relative.On carrier 30 as one kind 0, arrange two pieces of corresponding motion soft magnetic bodies 600, two pieces of motion soft magnetic bodies 600 be subject to the effect of magnetic field force and drive carrier 30 as one kind 0 to be subjected to displacement simultaneously.Known, the first excitation soft magnetic bodies 400 of " U " font and the second excitation soft magnetic bodies 500 and the combination of two pieces of motion soft magnetic bodies 600, can make carrier 30 as one kind 0 when being subjected to displacement, and motion more steadily, stressedly to balance more, and structure is also simpler.
What also will illustrate is, excitation coil 700 is wound in the first excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500, this kind of design have any different in traditional by coil winding on the carrier of motion, its reason is as follows: because the inwall of carrier offers screw thread, described screw thread is for installing camera, traditional can produce extruding to the screw thread of carrier by the design of coil winding on carrier, thus have impact on the normal mounting of camera, if and not by coil winding on carrier, just the impact of coiling on the screw thread of carrier can be got rid of, the screw thread moment of torsion management and control of carrier is more prone to.
For better realizing adjustment to carrier 30 as one kind 0 displacement and reset, in the present embodiment, flexure strip 200 comprises shell fragment 210 and lower shell fragment 220, and upper shell fragment 210 and lower shell fragment 220 are fixed in housing 100, and the two ends of carrier 30 as one kind 0 are connected with upper shell fragment 210 and lower shell fragment 220 respectively.
In the present embodiment, housing 100 comprises Antimagnetic hood 110 and base 120, Antimagnetic hood 110 cover closes on base 120, and forming a hollow cavity, flexure strip 200, carrier 30 as one kind 0, first excitation soft magnetic bodies 400, second encourages soft magnetic bodies 500, motion soft magnetic bodies 600, excitation coil 700, wiring board 800 and induction coil 900 to be all contained in described hollow cavity.Wherein, wiring board 800 is Flexible Printed Circuit and is located on base 120, induction coil 900 is located in housing 100, is specially induction coil 900 and is fixed on base 120, and is positioned at the first excitation soft magnetic bodies 400 and the second field region encouraging soft magnetic bodies 500 to produce.In addition, the first excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500 are fixed on base 120, and carrier 30 as one kind 0 is connected with base 120 by the effect of upper shell fragment 210 and lower shell fragment 220.
Camera electromagnetic drive structures 10, by being wound in by excitation coil 700 in first excitation soft magnetic bodies 400 and the second excitation soft magnetic bodies 500, using as stator, by being fixed on carrier 30 as one kind 0 by motion soft magnetic bodies 600, using as mover.It can thus be appreciated that excitation coil 700 not by the impact of carrier 300 movement, thus adds excitation coil 700 and the connective stability of external circuit, improves the useful life of camera electromagnetic drive structures 10 entirety.In addition, motion soft magnetic bodies 600 is fixed on carrier 30 as one kind 0, compared to traditional by the structural design of coil winding on carrier 30 as one kind 0, alleviate the heavy burden of carrier 30 as one kind 0 to a certain extent, carrier 30 as one kind 0 can be made lighter in moving process, react sensitiveer, realize accurately focusing.
Above-described embodiment is the present invention's preferably execution mode; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (9)
1. a camera electromagnetic drive structures, is characterized in that, comprising: housing, flexure strip, carrier, the first excitation soft magnetic bodies, the second excitation soft magnetic bodies and motion soft magnetic bodies;
Described carrier is suspended in described housing, and is connected with described housing by described flexure strip, and described motion soft magnetic bodies is fixed on described carrier;
Described first excitation soft magnetic bodies and described second excitation soft magnetic bodies are fixed in described housing, and described first excitation soft magnetic bodies and described second excitation soft magnetic bodies are wound with excitation coil respectively, and described excitation coil is used for being connected with external circuit;
Magnetic field is produced after described excitation coil energising, to make described first excitation soft magnetic bodies and described second excitation soft magnetic bodies magnetization, the polarity at the two ends that described first after magnetization encourages soft magnetic bodies and described second to encourage soft magnetic bodies relative is identical, and then described motion soft magnetic bodies is magnetized.
2. camera electromagnetic drive structures according to claim 1, is characterized in that, also comprise wiring board, and described wiring board is electrically connected with described excitation coil.
3. camera electromagnetic drive structures according to claim 2, it is characterized in that, also comprise induction coil, described induction coil is electrically connected with described wiring board, and described induction coil is for responding to the changes of magnetic field of described first excitation soft magnetic bodies and described second excitation soft magnetic bodies.
4. camera electromagnetic drive structures according to claim 3, is characterized in that, described induction coil is located in described housing.
5. camera electromagnetic drive structures according to claim 1, it is characterized in that, described first excitation soft magnetic bodies and described second excitation soft magnetic bodies are all in " U " font, and the two ends and described second of described first excitation soft magnetic bodies encourage the two ends of soft magnetic bodies to be oppositely arranged respectively.
6. camera electromagnetic drive structures according to claim 1, is characterized in that, described housing comprises Antimagnetic hood and base, and described Antimagnetic hood cover closes on described base.
7. camera electromagnetic drive structures according to claim 6, is characterized in that, described first excitation soft magnetic bodies and described second excitation soft magnetic bodies are fixed on described base.
8. camera electromagnetic drive structures according to claim 1, is characterized in that, described flexure strip comprises shell fragment and lower shell fragment, and the two ends of described carrier are connected with described upper shell fragment and described lower shell fragment respectively.
9. camera electromagnetic drive structures according to claim 2, is characterized in that, described wiring board is Flexible Printed Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510141008.4A CN104902150B (en) | 2015-03-27 | 2015-03-27 | A kind of camera electromagnetic drive structures |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510141008.4A CN104902150B (en) | 2015-03-27 | 2015-03-27 | A kind of camera electromagnetic drive structures |
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| CN104902150A true CN104902150A (en) | 2015-09-09 |
| CN104902150B CN104902150B (en) | 2018-05-29 |
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| CN201510141008.4A Active CN104902150B (en) | 2015-03-27 | 2015-03-27 | A kind of camera electromagnetic drive structures |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959569A (en) * | 2016-06-02 | 2017-07-18 | 北京美拓斯电子有限公司 | The closed loop controlling structure of webcam driver motor |
| CN109565540A (en) * | 2016-07-21 | 2019-04-02 | Lg伊诺特有限公司 | Lens driving device and camera model and optical device including lens driving device |
| WO2020216002A1 (en) * | 2019-04-22 | 2020-10-29 | 维沃移动通信有限公司 | Detection method and mobile terminal |
| WO2022000539A1 (en) * | 2020-06-30 | 2022-01-06 | 诚瑞光学(常州)股份有限公司 | Optical device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100770846B1 (en) * | 2005-05-13 | 2007-10-26 | 삼성전자주식회사 | Auto focus controlling apparatus for camera module |
| JP5985793B2 (en) * | 2010-11-26 | 2016-09-06 | 台灣東電化股▲ふん▼有限公司 | Auto focus module magnet base |
| JP2013190556A (en) * | 2012-03-13 | 2013-09-26 | Alps Electric Co Ltd | Lens drive device and driving method for the same |
| CN204180155U (en) * | 2014-04-10 | 2015-02-25 | 惠州友华微电子科技有限公司 | A kind of electronic equipment, camera and optical image stabilization drive unit |
-
2015
- 2015-03-27 CN CN201510141008.4A patent/CN104902150B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959569A (en) * | 2016-06-02 | 2017-07-18 | 北京美拓斯电子有限公司 | The closed loop controlling structure of webcam driver motor |
| CN109565540A (en) * | 2016-07-21 | 2019-04-02 | Lg伊诺特有限公司 | Lens driving device and camera model and optical device including lens driving device |
| US10935752B2 (en) | 2016-07-21 | 2021-03-02 | Lg Innotek Co., Ltd. | Lens driving device, and camera module and optical device, which include same |
| CN112882178A (en) * | 2016-07-21 | 2021-06-01 | Lg伊诺特有限公司 | Lens driving apparatus, and camera module and optical apparatus including the same |
| CN112882178B (en) * | 2016-07-21 | 2023-09-29 | Lg伊诺特有限公司 | Lens driving apparatus, camera module including the same, and optical apparatus |
| US11921349B2 (en) | 2016-07-21 | 2024-03-05 | Lg Innotek Co., Ltd. | Lens driving device, and camera module and optical device, which include same |
| WO2020216002A1 (en) * | 2019-04-22 | 2020-10-29 | 维沃移动通信有限公司 | Detection method and mobile terminal |
| WO2022000539A1 (en) * | 2020-06-30 | 2022-01-06 | 诚瑞光学(常州)股份有限公司 | Optical device |
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| Publication number | Publication date |
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| CN104902150B (en) | 2018-05-29 |
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Address after: 516006 West of Xingye Avenue, Heyuan High-tech Zone, Guangdong Province, North of Science and Technology Avenue (Factory B) Patentee after: Heyuan friend Hua micro mechanical and Electrical Technology Co., Ltd. Address before: 516006 3 building, No. 41, Chang Chang two road, Zhongkai hi tech Zone, Huizhou, Guangdong. Patentee before: HUIZHOU YOUHUA MICRO-ELECTRONIC TECHNOLOGY CO., LTD. |