CN216052388U - Novel piezoelectric ceramic camera driving device - Google Patents
Novel piezoelectric ceramic camera driving device Download PDFInfo
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- CN216052388U CN216052388U CN202122741902.9U CN202122741902U CN216052388U CN 216052388 U CN216052388 U CN 216052388U CN 202122741902 U CN202122741902 U CN 202122741902U CN 216052388 U CN216052388 U CN 216052388U
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Abstract
The utility model relates to a novel piezoelectric ceramic camera driving device, which is technically characterized by comprising the following components: a base; a protective shell; a gasket; a camera lens carrier; the piezoelectric ceramic driver is used for driving the camera lens carrier to do linear motion along the optical axis direction, a driver fixing groove is formed in the inner side face of a baffle table of the base, the piezoelectric ceramic driver comprises piezoelectric ceramic, a fixing plate, a friction plate I and a friction plate II, the fixing plate is arranged on one side of the piezoelectric ceramic, the friction plate I is arranged on the other side of the piezoelectric ceramic, the friction plate II is attached to the friction plate I and can generate relative friction motion, a pre-pressing plate spring is arranged between the inner side face of the driver fixing groove and the fixing plate, two ends of the pre-pressing plate spring are fixedly connected with the baffle table, and a mounting groove corresponding to the friction plate II is formed in the outer side face of the camera lens carrier; a position sensing assembly. The device solves the problem that the existing camera lens driving device can not realize the high-power continuous optical zooming function, and has the advantages of small volume, large displacement, no magnetic interference, simple components and easy assembly.
Description
Technical Field
The present invention relates to a camera lens driving device, and more particularly, to a piezoelectric ceramic camera driving device suitable for electronic devices such as a handheld camera.
Background
At present, a handheld camera device, especially a camera driving device of a mobile phone, basically and completely uses a Voice Coil Motor (VCM) to drive an entire lens, although such a method has the advantages of simple structure, mature technology, low cost, and the like, the following problems still exist:
the application scene is basically limited to medium and low load, medium and low displacement main shooting, auxiliary shooting, wide angle, micro distance, medium and low power long focus and the like, and cannot realize a high power continuous optical zooming function to realize ultra-long distance shooting due to the limitation of a lens moving mode and a driving mode. With the urgent need of ultra-long-distance shooting, the realization of the high-power continuous optical zoom function of the camera driving device has become a great problem to be solved urgently in the current hand-held camera device, especially the camera driving device of the mobile phone.
Disclosure of Invention
The utility model aims to provide a novel piezoelectric ceramic camera driving device which is reasonable in structure and reliable in use, solves the problem that the conventional camera lens driving device cannot realize a high-power continuous optical zooming function, and has the advantages of small volume, large displacement, no magnetic interference, simple components and easiness in assembly.
The technical scheme of the utility model is as follows:
the utility model provides a novel piezoceramics drive of making a video recording device, its technical essential is, include:
the base is used for fixing and supporting and is provided with a bottom plate and baffle platforms arranged at four corners of the bottom plate, and a through hole I is formed in the middle of the bottom plate;
the protective shell is buckled with the base to form a protective cavity, and a through hole II is formed in the middle of the top surface of the protective shell;
the gasket is arranged between the upper end surface of the base and the inner top surface of the protective shell and plays a role in limiting;
the camera lens carrier is arranged in the protection cavity, a positioning hole for bearing the lens group is arranged in the middle of the camera lens carrier, the camera lens group can be driven to do linear motion along the direction of an optical axis, and the axial leads of the positioning hole, the through hole I and the through hole II are coincided with the optical axis;
the piezoelectric ceramic driver is used for driving the camera lens carrier to do linear motion along the optical axis direction, a driver fixing groove is formed in the inner side face of a blocking platform of the base, the piezoelectric ceramic driver comprises piezoelectric ceramic, a fixing plate arranged on one side of the piezoelectric ceramic, a friction plate I arranged on the other side of the piezoelectric ceramic and a friction plate II which is attached to the friction plate I and can generate relative friction motion, a pre-pressing plate spring is arranged between the inner side face of the driver fixing groove and the fixing plate, two ends of the pre-pressing plate spring are fixedly connected with the blocking platform, the middle of the pre-pressing plate spring is fixedly connected with the fixing plate, and a mounting groove corresponding to the friction plate II is formed in the outer side face of the camera lens carrier;
the position sensing assembly comprises a position sensor and a signal receiver and is used for sensing the position change of the camera lens carrier along the optical axis direction.
Foretell novel piezoceramics drive arrangement that makes a video recording, with the side that two adjacent fender platforms of piezoceramics driver place were kept off the platform is equipped with respectively with the parallel slide I of optical axis direction, the lateral surface of camera lens carrier sets up two abduction portions that have slide II, slide II and I one-to-one of slide and slide II and slide are equipped with the ball between I to play the guide effect when the camera lens carrier removes along the optical axis.
The novel piezoelectric ceramic camera driving device is characterized in that a receiver fixing groove for mounting a signal receiver is arranged on the side face, in which the blocking platform is diagonally arranged, of the blocking platform where the piezoelectric ceramic driver is located, an inductor fixing groove for mounting a position inductor is arranged on the outer side face of the camera lens carrier, the receiver fixing groove and the inductor fixing groove correspond to each other, and the signal receiver is connected with a built-in conductive part of the base through the groove bottom of the receiver fixing groove.
The novel piezoelectric ceramic camera driving device is characterized in that the base is made of an insulating material, a metal material belt for increasing strength, taking electricity and transmitting signals is arranged in the base, a conductive terminal leading-out area connected with the metal material belt is arranged at the edge of a bottom plate of the base, one leading-out end of the pre-pressing plate spring is electrically connected with piezoelectric ceramic electricity of the piezoelectric ceramic actuator, and the other leading-out end of the pre-pressing plate spring is electrically connected with the conductive terminal leading-out area so as to be used for electrifying the piezoelectric ceramic.
Foretell novel piezoceramics drive arrangement that makes a video recording, piezoceramics is a piezoceramics piece or is piled up by a plurality of piezoceramics pieces and forms, is equipped with the articulamentum between two adjacent piezoceramics pieces.
The utility model has the beneficial effects that:
the utility model applies the piezoelectric ceramic technology to the camera driving device, namely, the piezoelectric actuator is adopted to drive the camera lens carrier of the bearing lens group to generate linear displacement along the optical axis direction, thereby adjusting the image parameters and realizing high-power continuous optical zooming; and closed loop control is achieved using the position sensing assembly. The device has the advantages of simple structure, small volume, no magnetic interference, large thrust, large displacement, high response speed, high positioning precision, firm structure, easy assembly and the like.
Drawings
FIG. 1 is a schematic structural view of the present invention (without protective shell);
FIG. 2 is a schematic structural view of the base of the present invention;
fig. 3 is a schematic structural view of the imaging lens carrier of the present invention;
FIG. 4 is a perspective view of another angle of the camera lens carrier of the present invention;
FIG. 5 is a schematic structural view of a piezoceramic driver of the present invention;
FIG. 6 is a schematic view of the construction of the gasket of the present invention;
fig. 7 is a schematic structural view of the protective case of the present invention.
In the figure: 1. the image pickup device comprises a base, 101, a blocking table, 102, slide ways I, 103, a driver fixing groove, 104, a receiver fixing groove, 105, a through hole I, 2, an image pickup lens carrier, 201, a mounting groove, 202, a positioning hole, 203, a flared part, 204, slide ways II, 205, an inductor fixing groove, 3, a piezoelectric ceramic driver, 301, a fixing plate, 302, a piezoelectric ceramic piece, 303, a piezoelectric ceramic piece, 304, a connecting layer, 305, friction pieces I, 306, friction pieces II, 4, a pre-pressing plate spring, 5, a gasket, 6, a protective shell, 601 and a through hole II.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 7, the novel piezoelectric ceramic camera driving device includes a base 1, a protective shell 6, a gasket 5, a camera lens carrier 2, a piezoelectric ceramic driver 3, and a position sensing assembly.
Wherein, base 1 is used for fixed and support, has the bottom plate and locates the fender platform 101 in bottom plate four corners, and the bottom plate middle part is equipped with through-hole I105. The protective housing 6 and the base 1 are buckled to form a protective cavity, and a through hole II 601 is formed in the middle of the top surface of the protective housing 6. The gasket 5 is arranged between the upper end surface of the base 1 and the inner top surface of the protective shell 6, and plays a role in limiting. The camera lens carrier 2 is arranged in the protection cavity, a positioning hole 202 for bearing the lens group is arranged in the middle of the camera lens carrier, the lens group can be driven to do linear motion along the direction of an optical axis, and the axial leads of the positioning hole 202, the through hole I105 and the through hole II 601 are coincided with the optical axis. The piezoelectric ceramic driver 3 is used for driving the camera lens carrier 2 to do linear motion along the optical axis direction, a baffle table 101 of the base 1 is provided with a driver fixing groove 103 on the inner side, the piezoelectric ceramic driver 3 comprises piezoelectric ceramic, a fixing plate 301 arranged on one side of the piezoelectric ceramic, a friction plate I305 arranged on the other side of the piezoelectric ceramic, and a friction plate II 306 attached to the friction plate I305 and capable of generating relative friction motion, a pre-pressing plate spring 4 is arranged between the inner side of the driver fixing groove 103 and the fixing plate 301, two ends of the pre-pressing plate spring 4 are fixedly connected with the baffle table 101, the middle of the pre-pressing plate spring 4 is fixedly connected with the fixing plate 301, the pre-pressing plate spring is in an elastic deformation state to form pre-pressing force, and the outer side of the camera lens carrier 2 is provided with a mounting groove 201 corresponding to the friction plate II 306. The position sensing assembly comprises a position sensor and a signal receiver and is used for sensing the position change of the camera lens carrier 2 along the optical axis direction.
In this embodiment, the side surfaces of the two blocking platforms 101 adjacent to the blocking platform 101 where the piezoelectric ceramic driver 3 is located are respectively provided with a slide i 102 parallel to the optical axis direction, the outer side surface of the camera lens carrier 2 is provided with two extending portions 203 with slides ii 204, the slides ii 204 are in one-to-one correspondence with the slides i 102, and balls are arranged between the slides ii 204 and the slides i 102, so that the camera lens carrier 2 plays a role in guiding when moving along the optical axis. The slide way I102 faces the pre-pressing plate spring 4 side, and the slide way II 204 faces away from the pre-pressing plate spring 4 side. A receiver fixing groove 104 for installing a signal receiver is arranged on the side surface of the baffle table 101 which is diagonally arranged with the baffle table 101 where the piezoceramic driver 3 is positioned, an inductor fixing groove 205 for installing a position inductor is arranged on the outer side surface of the camera lens carrier 2, the receiver fixing groove 104 and the inductor fixing groove 205 correspond to each other, and the signal receiver is connected with a conductive part arranged in the base 1 through the groove bottom of the receiver fixing groove 104.
In this embodiment, the piezoelectric ceramic is formed by stacking two piezoelectric ceramic sheets 302 and 303, and a connection layer 304 is disposed between the two piezoelectric ceramic sheets 302 and 303. The purpose of stacking a plurality of piezoelectric ceramic sheets is to increase the driving force. One of the piezoelectric ceramic plates 303 is bonded to the fixing plate 301 by glue, and the other piezoelectric ceramic plate 302 is bonded to the friction plate i 305 by glue. The base 1 is made of an insulating material, a metal material belt for increasing strength, taking electricity and transmitting signals is arranged in the base, a conductive terminal leading-out area connected with the metal material belt is arranged at the edge of a bottom plate of the base 1, two leading-out ends in the middle of the pre-pressing plate spring 4 are electrically connected with piezoelectric ceramics of the piezoelectric ceramic actuator, and the other two leading-out ends are electrically connected with the conductive terminal leading-out area and used for electrifying the piezoelectric ceramics. The metal material belt is of a plurality of discontinuous structures, and the material is one of metals, such as iron, copper alloy, stainless steel and the like. The base structure is not limited to this, but may be a plastic structure only, in a manner that signal transmission matches the circuit board.
The working principle is as follows:
the piezoelectric ceramic of the piezoelectric ceramic driver 3 generates regular telescopic deformation after being electrified, the friction plate I305 which is in adhesive connection with the piezoelectric ceramic vibrates along with the piezoelectric ceramic, and the friction plate I305 stirs the friction plate II 306 and the camera lens carrier 2 to move along the optical axis direction, so that the focusing function is realized; when the camera lens carrier 2 drives the position sensor to move relative to the signal receiver, the signal receiver outputs sensing signals with different sizes to the control system by detecting the position signal change of the sensing position sensor, the movement error value is judged by the internal comprehensive calculation of the control system, and a position compensation signal is sent to a corresponding circuit of the piezoelectric ceramic driver 3, the piezoelectric ceramic driver 3 is controlled to drive the camera lens carrier 2 to move to adjust the corresponding position precision, so that closed-loop control is realized, the operation is repeated until the preset precision is reached, and the best imaging quality is output by the camera driving device.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the utility model are also within the scope of the present patent.
Claims (5)
1. The utility model provides a novel piezoceramics drive of making a video recording device which characterized in that includes:
the base is used for being fixed on the support and is provided with a bottom plate and baffle tables arranged at four corners of the bottom plate, and a through hole I is formed in the middle of the bottom plate;
the protective shell is buckled with the base to form a protective cavity, and a through hole II is formed in the middle of the top surface of the protective shell;
the gasket is arranged between the upper end surface of the base and the inner top surface of the protective shell and plays a role in limiting;
the camera lens carrier is arranged in the protection cavity, a positioning hole for bearing the lens group is arranged in the middle of the camera lens carrier, the camera lens group can be driven to do linear motion along the direction of an optical axis, and the axial leads of the positioning hole, the through hole I and the through hole II are coincided with the optical axis;
the piezoelectric ceramic driver is used for driving the camera lens carrier to do linear motion along the optical axis direction, a driver fixing groove is formed in the inner side face of a blocking platform of the base, the piezoelectric ceramic driver comprises piezoelectric ceramic, a fixing plate arranged on one side of the piezoelectric ceramic, a friction plate I arranged on the other side of the piezoelectric ceramic and a friction plate II which is attached to the friction plate I and can generate relative friction motion, a pre-pressing plate spring is arranged between the inner side face of the driver fixing groove and the fixing plate, two ends of the pre-pressing plate spring are fixedly connected with the blocking platform, the middle of the pre-pressing plate spring is fixedly connected with the fixing plate, and a mounting groove corresponding to the friction plate II is formed in the outer side face of the camera lens carrier;
the position sensing assembly comprises a position sensor and a signal receiver and is used for sensing the position change of the camera lens carrier along the optical axis direction.
2. The piezoelectric ceramic camera drive device according to claim 1, wherein: with the side that two adjacent platforms of keeping off of piezoceramics driver place keep off the platform is equipped with slide I parallel with the optical axis direction respectively, the lateral surface of camera lens carrier sets up two abduction portions that have slide II, slide II and I one-to-one of slide and slide II and slide I between be equipped with the ball.
3. The piezoelectric ceramic camera drive device according to claim 1, wherein: the side face of the blocking platform which is diagonally arranged with the blocking platform where the piezoelectric ceramic driver is located is provided with a receiver fixing groove for mounting a signal receiver, the outer side face of the camera lens carrier is provided with a sensor fixing groove for mounting a position sensor, the receiver fixing groove and the sensor fixing groove correspond to each other, and the signal receiver is connected with a conductive part which is arranged in the base through the groove bottom of the receiver fixing groove.
4. The piezoelectric ceramic camera drive device according to claim 1, wherein: the base is made of insulating materials, a metal material belt for increasing strength, taking electricity and transmitting signals is arranged in the base, a conductive terminal leading-out area connected with the metal material belt is arranged at the edge of a bottom plate of the base, one leading-out end of the pre-pressing plate spring is electrically connected with piezoelectric ceramics of the piezoelectric ceramic actuator, and the other leading-out end of the pre-pressing plate spring is electrically connected with the conductive terminal leading-out area so as to be used for electrifying the piezoelectric ceramics.
5. The piezoelectric ceramic camera drive device according to claim 1, wherein: the piezoelectric ceramic is a piezoelectric ceramic piece or formed by stacking a plurality of piezoelectric ceramic pieces, and a connecting layer is arranged between every two adjacent piezoelectric ceramic pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122741902.9U CN216052388U (en) | 2021-11-10 | 2021-11-10 | Novel piezoelectric ceramic camera driving device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122741902.9U CN216052388U (en) | 2021-11-10 | 2021-11-10 | Novel piezoelectric ceramic camera driving device |
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| CN216052388U true CN216052388U (en) | 2022-03-15 |
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| CN202122741902.9U Active CN216052388U (en) | 2021-11-10 | 2021-11-10 | Novel piezoelectric ceramic camera driving device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114827408A (en) * | 2022-04-13 | 2022-07-29 | Oppo广东移动通信有限公司 | Camera module and electronic equipment |
| CN114900594A (en) * | 2022-04-19 | 2022-08-12 | Oppo广东移动通信有限公司 | Camera module and electronic equipment |
| WO2023202510A1 (en) * | 2022-04-18 | 2023-10-26 | 华为技术有限公司 | Piezoelectric motor, camera module, and electronic device |
| CN114827408B (en) * | 2022-04-13 | 2024-04-26 | Oppo广东移动通信有限公司 | Camera module and electronic equipment |
-
2021
- 2021-11-10 CN CN202122741902.9U patent/CN216052388U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114827408A (en) * | 2022-04-13 | 2022-07-29 | Oppo广东移动通信有限公司 | Camera module and electronic equipment |
| CN114827408B (en) * | 2022-04-13 | 2024-04-26 | Oppo广东移动通信有限公司 | Camera module and electronic equipment |
| WO2023202510A1 (en) * | 2022-04-18 | 2023-10-26 | 华为技术有限公司 | Piezoelectric motor, camera module, and electronic device |
| CN114900594A (en) * | 2022-04-19 | 2022-08-12 | Oppo广东移动通信有限公司 | Camera module and electronic equipment |
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Denomination of utility model: A New Piezoelectric Ceramic Camera Driver Effective date of registration: 20220929 Granted publication date: 20220315 Pledgee: China Construction Bank Corporation Panjin branch Pledgor: Liaoning Zhonglan Photoelectric Technology Co.,Ltd. Registration number: Y2022210000157 |