CN215452811U - Novel piezoelectric ceramic driving device - Google Patents
Novel piezoelectric ceramic driving device Download PDFInfo
- Publication number
- CN215452811U CN215452811U CN202122086270.7U CN202122086270U CN215452811U CN 215452811 U CN215452811 U CN 215452811U CN 202122086270 U CN202122086270 U CN 202122086270U CN 215452811 U CN215452811 U CN 215452811U
- Authority
- CN
- China
- Prior art keywords
- top shell
- base
- driving device
- groove
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model relates to a camera lens driving device, in particular to a novel piezoelectric ceramic driving device. The method comprises the following steps: a base for fixing the sliding assembly; the adjusting assembly comprises a top shell, a metal elastic sheet arranged on the upper surface of the top shell, an elastic component arranged between the base and the top shell, a first bolt used for connecting the base and the top shell, and a second bolt used for connecting the top shell and the metal elastic sheet; the sliding assembly is arranged between the base and the top shell, at least one piezoelectric driving assembly is arranged on the sliding assembly, and the pressure between the piezoelectric driving assembly and the sliding assembly is adjusted by adjusting the first bolt and the second bolt. The utility model solves the problem that the existing camera lens driving device is difficult to realize accurate adjustment, thereby improving the focusing precision of the optical lens group and realizing the functions of quick focusing and anti-shaking of the lens.
Description
Technical Field
The utility model relates to a camera lens driving device, in particular to a novel piezoelectric ceramic driving device which is suitable for a handheld camera device.
Background
At present, a handheld image pickup apparatus, especially an image pickup driving apparatus of a mobile phone, basically drives an entire lens by using a Voice Coil Motor (VCM). Although this method has the advantages of simple structure, mature technology, low cost, etc., the following problems still exist:
the application scenes are basically limited to main shooting, auxiliary shooting, wide angle, micro distance, medium and low power long focus and the like with medium and low load and medium and low displacement, and cannot realize large load and large displacement 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 handheld camera device, especially the camera driving device of the mobile phone.
SUMMERY OF THE UTILITY MODEL
In view of the above disadvantages and shortcomings of the prior art, the present invention provides a novel piezoelectric ceramic driving device, which solves the problem that the existing camera lens driving device is difficult to realize precise adjustment, further improves the focusing precision of the optical lens group, and realizes the rapid focusing and anti-shake functions of the lens.
In order to achieve the purpose, the utility model adopts the main technical scheme that:
the utility model provides a novel piezoelectric ceramic driving device, comprising: a base for fixing the sliding assembly; the adjusting assembly comprises a top shell, a metal elastic sheet arranged on the upper surface of the top shell, an elastic component arranged between the base and the top shell, a first bolt used for connecting the base and the top shell, and a second bolt used for connecting the top shell and the metal elastic sheet; the sliding assembly is arranged between the base and the top shell, at least one piezoelectric driving assembly is arranged on the sliding assembly, and the pressure between the piezoelectric driving assembly and the sliding assembly is adjusted by adjusting the first bolt and the second bolt.
Furthermore, the upper surface of the base is provided with a bearing table, a first threaded hole and a first groove which are positioned around the bearing table; the first threaded hole is matched with the first bolt to fix the base and the top shell, and the elastic component is arranged in the first groove; and a second groove is formed in the bearing table and used for installing the sliding assembly.
Furthermore, a circular through hole matched with the first threaded hole in the base is formed in the top shell; the middle of the top shell is provided with a square through hole for mounting a boss connected with the piezoelectric driving component; and third grooves are formed in the top shells on two sides of the square through hole and used for being connected with the metal elastic pieces.
Furthermore, round holes are formed in the middle and two sides of the metal elastic sheet, and a strip hole is formed between the round hole in the middle of the metal elastic sheet and the round holes in the two sides of the metal elastic sheet.
Furthermore, the sliding assembly comprises a sliding block body and at least one first friction body arranged on the sliding block body, the first friction body is connected with the piezoelectric driving assembly, and the sliding block body is arranged in a second groove of the base bearing table.
Further, the top surface of the sliding block body is provided with a first friction body, the two lower side surfaces of the sliding block body are equally divided into four grooves, balls are arranged in the four grooves, and the balls are connected with the side walls of the second grooves in a sliding mode.
Further, slider body top surface and two downside are equallyd divide and are equipped with first friction body respectively, and the first friction body that sets up at two downside of slider body is symmetry axis symmetry setting with the first friction body that sets up at the slider body top surface.
Furthermore, the elastic component comprises a linear bearing, a guide rod arranged on an inner ring of the linear bearing and a spring arranged on an outer ring of the linear bearing; the upper end and the lower end of the spring are respectively abutted against the base and the top shell; the bottom end of the guide rod is fixed in the first groove of the base, and the top end of the guide rod is a free end; or the top end of the guide rod is fixed in the fifth groove on the lower surface of the top shell, and the bottom end of the guide rod is a free end.
Furthermore, the piezoelectric driving assembly comprises a first electrode, a piezoelectric ceramic piece, a second electrode and a second friction body, the piezoelectric ceramic piece is arranged between the first electrode and the second electrode, one side of the second friction body is arranged in a manner of being tightly attached to the second electrode, and the other side of the second friction body is connected with the first friction body of the sliding assembly.
Furthermore, one end of each of the first electrode and the second electrode is provided with a conductive terminal leading-out area.
The utility model has the beneficial effects that: the utility model discloses a novel piezoelectric ceramic driving device, which is characterized in that a first bolt penetrates through a circular through hole of a top shell to be fixed with a first threaded hole on a base, and coarse adjustment is carried out on a camera lens driving device; meanwhile, a second bolt penetrates through a circular through hole in the metal elastic sheet and is fixed with second threaded holes in third grooves in the two sides of the top shell, fine adjustment is performed on the camera lens driving device, and the problem that the existing camera lens driving device is difficult to achieve fine adjustment is solved. The utility model can improve the focusing precision of the optical lens group and realize the functions of quick focusing and anti-shaking of the lens.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the base structure of the present invention;
FIG. 3 is a schematic view of the top housing construction of the present invention;
FIG. 4 is a schematic view of a metal dome structure according to the present invention;
FIG. 5 is a schematic view of a slider unit configuration of the present invention;
FIG. 6 is a schematic view of the spring unit of the present invention;
FIG. 7 is a schematic structural view of a piezoelectric ceramic element according to the present invention.
In the figure: 1. a base; 2. a top shell; 3. a first bolt; 4. a metal spring sheet; 5. a slider assembly; 6. an elastic component; 7. a piezoelectric drive assembly; 11. a first threaded hole; 12. a first groove; 13. a bearing table; 14. a second groove; 21. a circular through hole; 22. a square through hole; 23. a third groove; 24. a second threaded hole; 41. a circular hole; 42. a strip hole; 51. a slider body; 52. a first friction body; 61. a guide bar; 62. a linear bearing; 63. a spring; 71. a first electrode; 72. piezoelectric ceramic plates; 73. a second electrode; 74. a second friction body.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
Example 1:
referring to fig. 1, the present invention provides a novel piezoelectric ceramic driving device. The driving device comprises a base, an adjusting component, a sliding component and a piezoelectric driving component. Wherein, the base is used for fixing the sliding component and the piezoelectric driving component. The adjusting component comprises a top shell, a metal elastic sheet arranged on the upper surface of the top shell, an elastic component arranged between the base and the top shell, a first bolt used for connecting the base and the top shell, and a second bolt used for connecting the top shell and the metal elastic sheet. The sliding assembly is arranged between the base and the top shell, at least one piezoelectric driving assembly is arranged on the sliding assembly, and the pressure between the piezoelectric driving assembly and the sliding assembly is adjusted by adjusting the first bolt and the second bolt. The first bolt adjustment and the second bolt adjustment of the utility model have different displacement accuracy of relative movement. According to the utility model, by adjusting the first bolt and the second bolt, the best pre-pressure between the piezoelectric driving assembly and the sliding assembly can be found, and then the lens in the sliding assembly is driven to move along the axial direction of the sliding assembly, so that the driving device can be accurately adjusted, and further the focal length can be adjusted.
Specifically, referring to fig. 2, the upper surface of the base is provided with a bearing table, four first threaded holes and four first grooves, and the four first threaded holes are located at four corners of the base respectively. The first threaded hole is matched with the first bolt to fix the base and the top shell. Be used for installing elastomeric element in the first recess, elastomeric element's upper and lower both ends are connected with top shell and base respectively. The plummer and base integrated into one piece can make the base more firm to convenient equipment. And a second groove is formed in the bearing table and used for installing the sliding assembly. The longitudinal section of the second groove in this embodiment is trapezoidal. Of course, the second groove of the present invention is not limited to the above structure, but may be rectangular, triangular, or the like. The number of the first threaded holes and the first recesses of the present invention is not limited to the above number, and may be three.
Specifically, referring to fig. 3, a circular through hole matched with the first threaded hole on the base is formed in the top shell, and a first bolt is screwed in the first threaded hole through the circular through hole to fix the base and the top shell. By adjusting the first bolt, the camera lens driving device is coarsely adjusted, namely, the pre-pressure between the piezoelectric driving component and the sliding component is coarsely adjusted. The middle of the top shell is provided with a square through hole for installing a boss connected with the piezoelectric driving component. And third grooves are formed in the top shells on two sides of the square through hole and used for being connected with the metal elastic pieces. The third groove in this embodiment is a sawtooth-shaped groove, and two second threaded holes are provided in the third groove for matching with a second bolt, so as to fix the top case and the metal elastic sheet. The third groove of the present invention may also be a rectangular groove, a trapezoidal groove, or the like.
Specifically, referring to fig. 4, the middle and both sides of the metal elastic sheet are provided with round holes, and a strip hole is formed between the round hole in the middle of the metal elastic sheet and the round holes on both sides of the metal elastic sheet. The metal elastic sheet is placed above the middle part of the top shell, and the second bolt penetrates through the round holes in the two sides of the metal elastic sheet and is connected with the second threaded hole in the third groove, so that the metal elastic sheet and the top shell are fixed. And adjusting the second bolt to finely adjust the driving device of the camera lens, namely finely adjust the pre-pressure between the piezoelectric driving component and the sliding component.
And third grooves are formed in two sides of the top shell, and second threaded holes are formed in the third grooves. The two ends of the metal elastic sheet are provided with round holes with the same number as the second threaded holes, and the second bolts penetrate through the round holes and the second threaded holes to be in threaded fixation.
Specifically, referring to fig. 5, the sliding assembly includes a slider body and at least one first friction body disposed on the slider body. The first friction body is connected with the piezoelectric driving assembly, and the sliding block body is arranged in the second groove of the base bearing table. The slider body of this embodiment is regular hexagon structure, and its middle part is provided with the through-hole that is used for installing the camera lens along the axial. The top surface of the sliding block body and the two lower side surfaces are respectively provided with a first friction body, and the first friction bodies arranged on the two lower side surfaces of the sliding block body are symmetrically arranged by taking the first friction bodies arranged on the top surface of the sliding block body as symmetry axes. The slider body slides and sets up in the second recess of plummer, and the first frictional body on slider body top surface and two downside is respectively with one side sliding connection of the second frictional body on the piezoelectricity drive assembly. The other side of the piezoelectric driving component positioned on the two lower side surfaces of the sliding block body is fixed with the inner wall of the second groove, and the other side of the piezoelectric driving component positioned on the top surface of the sliding block body is fixed with the lower surface of the boss arranged in the square through hole of the top shell. After the piezoelectric driving component is electrified, the sliding component moves in the second groove relative to the piezoelectric driving component.
Specifically, referring to fig. 6, the elastic member includes a linear bearing, a guide rod provided to an inner race of the linear bearing, and a spring provided to an outer race of the linear bearing. The bottoms of the linear bearing and the guide rod are fixedly arranged in the first groove of the base, the top end of the guide rod is a free end, and the upper end and the lower end of the spring are respectively abutted to the base and the top shell. Specifically, the linear bearing is of an annular structure, the guide rod is arranged on an inner ring of the linear bearing, and the bottom of the guide rod is fixedly connected with the first groove. The lower surface of the top shell is provided with four cylindrical fifth grooves, the top of the guide rod is a free end, and the top of the guide rod is slowly close to the fifth grooves of the top shell in the screwing process of the first bolt.
The elastic member of the present invention is not limited to the above configuration, and may be: the top of the guide rod is fixedly connected with the fifth groove, the bottom of the guide rod is inserted into the linear bearing and can slide in the linear bearing, and the bottom of the guide rod is a free end. During screwing of the first bolt, the bottom of the guide rod is slowly close to the first groove of the base. The guide rod plays a limiting role, and prevents the first bolt from being screwed too tightly to crush the piezoelectric driving assembly.
Specifically, referring to fig. 7, the piezoelectric driving assembly sequentially includes, from side to side: the piezoelectric ceramic chip comprises a first electrode, a piezoelectric ceramic chip, a second electrode and a second friction body. The upper surface of the first electrode is fixedly adhered to the boss, one side of the second friction body is arranged in close contact with the second electrode, and the other side of the second friction body is in frictional contact with the first friction body of the sliding assembly. And one end of each of the first electrode and the second electrode is provided with a conductive terminal lead-out area. After the first electrode and the second electrode are electrified, the first friction body slides relative to the second friction body, and then the lens is driven to move so as to adjust the focal length.
Example 2:
the slider body top surface sets up a first friction body in this embodiment, and two downside of slider body are equallyd divide and do not are equipped with the fourth recess, are equipped with the ball in the fourth recess, the lateral wall sliding connection of ball and second recess. Specifically, the slider body is a regular hexagon, and a through hole for mounting a lens is axially formed in the middle of the slider body. The first friction bodies are arranged on the top surface of the sliding block body, grooves are respectively formed in two lower side surfaces of the sliding block body, and the balls are arranged in the grooves and are in sliding connection with the second grooves. The piezoelectric driving assembly is arranged on the top surface of the sliding assembly, a second friction body of the piezoelectric driving assembly is in friction contact with a first friction body on the top surface of the sliding assembly, and the top of the piezoelectric driving assembly is fixed with a boss arranged in a square through hole of the top shell. The slider body can also be a hollow cuboid or a triangular prism, and the cross section of the slider body is the same as that of the second groove. The other structure is the same as that of embodiment 1.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.
Claims (10)
1. A novel piezoelectric ceramic driving device is characterized by comprising:
a base for fixing the sliding assembly;
the adjusting assembly comprises a top shell, a metal elastic sheet arranged on the upper surface of the top shell, an elastic component arranged between the base and the top shell, a first bolt used for connecting the base and the top shell, and a second bolt used for connecting the top shell and the metal elastic sheet;
the sliding assembly is arranged between the base and the top shell, at least one piezoelectric driving assembly is arranged on the sliding assembly, and the pressure between the piezoelectric driving assembly and the sliding assembly is adjusted by adjusting the first bolt and the second bolt.
2. The novel piezoceramic driving device according to claim 1, wherein the upper surface of the base is provided with a bearing platform, and a first threaded hole and a first groove are arranged around the bearing platform; the first threaded hole is matched with the first bolt to fix the base and the top shell, and the elastic component is arranged in the first groove; and a second groove is formed in the bearing table and used for installing the sliding assembly.
3. The novel piezoceramic driving device according to claim 2, wherein the top shell is provided with a circular through hole matching with the first threaded hole on the base; the middle of the top shell is provided with a square through hole for mounting a boss connected with the piezoelectric driving component; and third grooves are formed in the top shells on two sides of the square through hole and used for being connected with the metal elastic pieces.
4. The novel piezoelectric ceramic driving device according to claim 1, wherein the metal elastic sheet is provided with round holes in the middle and at both sides, and a long hole is formed between the round hole in the middle of the metal elastic sheet and the round holes at both sides.
5. The novel piezoceramic driving device according to claim 1, wherein the sliding assembly comprises a slider body and at least one first friction body arranged on the slider body, the first friction body is connected with the piezoelectric driving assembly, and the slider body is arranged in the second groove of the base bearing table.
6. The piezoelectric ceramic driving device as claimed in claim 5, wherein the top surface of the slider body is provided with a first friction body, the two lower side surfaces of the slider body are respectively provided with a fourth groove, and the fourth groove is provided with a ball, and the ball is slidably connected with the side wall of the second groove.
7. The novel piezoceramic driver according to claim 5, wherein the top surface and the two lower sides of the slider body are respectively provided with a first friction body, and the first friction bodies arranged on the two lower sides of the slider body are arranged symmetrically with respect to the axis of symmetry of the first friction body arranged on the top surface of the slider body.
8. The novel piezoceramic driving device according to claim 1, wherein the elastic component comprises a linear bearing, a guide rod arranged at an inner ring of the linear bearing and a spring arranged at an outer ring of the linear bearing; the upper end and the lower end of the spring are respectively abutted against the base and the top shell; the bottom end of the guide rod is fixed in the first groove of the base, and the top end of the guide rod is a free end; or the top end of the guide rod is fixed in the fifth groove on the lower surface of the top shell, and the bottom end of the guide rod is a free end.
9. The novel piezoelectric ceramic driving device according to claim 1, wherein the piezoelectric driving assembly includes a first electrode, a piezoelectric ceramic plate, a second electrode, and a second friction body, the piezoelectric ceramic plate is disposed between the first electrode and the second electrode, one side of the second friction body is disposed closely to the second electrode, and the other side of the second friction body is connected to the first friction body of the sliding assembly.
10. The novel piezoceramic driving device according to claim 9, wherein one end of each of the first electrode and the second electrode is provided with a conductive terminal lead-out area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122086270.7U CN215452811U (en) | 2021-09-01 | 2021-09-01 | Novel piezoelectric ceramic driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122086270.7U CN215452811U (en) | 2021-09-01 | 2021-09-01 | Novel piezoelectric ceramic driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215452811U true CN215452811U (en) | 2022-01-07 |
Family
ID=79697960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122086270.7U Active CN215452811U (en) | 2021-09-01 | 2021-09-01 | Novel piezoelectric ceramic driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215452811U (en) |
-
2021
- 2021-09-01 CN CN202122086270.7U patent/CN215452811U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8077398B2 (en) | Lens driving device comprising magnetic circuit with high magnetic efficiency | |
| CN216052388U (en) | Novel piezoelectric ceramic camera driving device | |
| US8279541B2 (en) | Lens actuator module | |
| CN212935798U (en) | Piezoelectric linear driver for driving camera lens | |
| CN105319663B (en) | Lens driving device, camera device and electronic equipment | |
| JP3154894U (en) | Lens drive device | |
| KR100777630B1 (en) | Driving machanism | |
| US7612957B1 (en) | Voice coil driving auto-focus lens module | |
| US7936527B2 (en) | Auto focus lens module with piezoelectric actuator | |
| US8040623B2 (en) | Compact auto focus lens module with piezoelectric actuator | |
| KR20060106703A (en) | Driving mechanism, photographic mechanism and cellular phone | |
| CN213843651U (en) | Piezoelectric camera driving device for high-power continuous zooming | |
| CN203894463U (en) | Focusing motor capable of realizing optical zooming and optical anti-vibration simultaneously | |
| KR20110047132A (en) | Linear drive | |
| CN215452811U (en) | Novel piezoelectric ceramic driving device | |
| JP5544504B2 (en) | Linear drive device, lens drive device, camera and mobile phone with camera | |
| JP2010246277A (en) | Linear drive unit | |
| CN215953944U (en) | Electromagnetic camera driving device for continuous zooming | |
| CN211606596U (en) | Camera module and digital device | |
| CN113777746A (en) | Primary-secondary piezoelectric driving device | |
| US8520329B2 (en) | Piezoelectric actuator, lens barrel and optical device | |
| CN214895975U (en) | Piezoelectric ceramic camera driving device | |
| CN203311142U (en) | Automatic focusing optical module driven by micro piezoelectric motor | |
| CN215953942U (en) | Camera lens carrier assembly of primary-secondary piezoelectric driving device | |
| CN215953941U (en) | Primary-secondary piezoelectric driving device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A New Piezoelectric Ceramic Driving Device Effective date of registration: 20220929 Granted publication date: 20220107 Pledgee: China Construction Bank Corporation Panjin branch Pledgor: Liaoning Zhonglan Photoelectric Technology Co.,Ltd. Registration number: Y2022210000157 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |