CN215953941U - Primary-secondary piezoelectric driving device - Google Patents
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- CN215953941U CN215953941U CN202122497021.7U CN202122497021U CN215953941U CN 215953941 U CN215953941 U CN 215953941U CN 202122497021 U CN202122497021 U CN 202122497021U CN 215953941 U CN215953941 U CN 215953941U
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Abstract
The utility model relates to a primary-secondary piezoelectric driving device, which fundamentally solves the problem that the existing camera lens driving device has poor effect when realizing large displacement, large load and high-speed focusing functions. The lens carrier comprises a first lens carrier and a second lens carrier, wherein the first lens carrier is used for driving the first movable lens group and the second lens carrier to bear the first movable lens group, the second lens carrier is used for bearing the second movable lens group, synchronous movement of the movable lens carriers is achieved, meanwhile, the second piezoelectric ceramic actuator can be used for driving the second lens carrier to move back and forth in the first lens carrier through balls, the rapid focusing and anti-shaking functions of the lens are better achieved, and the lens carrier has the advantages of small size, large thrust, large displacement, no magnetic interference, simple structure and easiness in assembly.
Description
Technical Field
The present invention relates to a driving device for a camera lens, and more particularly, to a primary-secondary piezoelectric driving device suitable for a handheld camera device and an electronic device.
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 a whole 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 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. In the actual use process, people hold mobile phones in different postures and shake the mobile phones, so that the received external resultant force cannot be completely driven along the optical axis direction, and the resultant force causes inaccurate position of a lens and inclination of the lens in the automatic focusing process of a voice coil motor, so that the photographing effect is not ideal. 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 master-slave type piezoelectric driving device which is reasonable in structure and reliable in use, fundamentally solves the problem that the existing camera lens driving device is poor in effect when large displacement, large load and high-speed focusing functions are realized, realizes the functions of quick focusing and anti-shaking of a lens, and has the advantages of small volume, large thrust, large displacement, no magnetic interference, simple structure and easiness in assembly.
The technical scheme of the utility model is as follows:
the utility model provides a primary and secondary formula piezoelectric drive device, its technical essential is, includes:
the left side and the right side of the base are respectively fixed with guide shafts which are parallel to each other, and the front end and the rear end of the base are provided with lens fixing grooves for mounting a first fixed lens group and a second fixed lens group;
the protective shell is buckled with the base into a whole and forms a protective cavity;
the camera lens carrier assembly is positioned in the protection cavity and comprises a first lens carrier and a second lens carrier, wherein the first lens carrier can slide along the guide shaft, the second lens carrier is arranged on the first lens carrier and can move relative to the first lens carrier, a lens fixing groove used for fixing a first movable lens group is formed in the front part of the first lens carrier, a carrier mounting groove used for mounting the second lens carrier is formed in the rear part of the first lens carrier, a rolling assembly is arranged between the carrier mounting groove and the second lens carrier, a lens fixing groove used for fixing a second movable lens group is formed in the second lens carrier, and the first fixed lens group, the second fixed lens group, the first movable lens group and the second movable lens group are arranged on the same optical axis;
the piezoelectric driving unit comprises a first piezoelectric ceramic actuator and a second piezoelectric ceramic actuator, wherein the first piezoelectric ceramic actuator is used for driving the first lens carrier to do linear motion along the optical axis direction, and the second piezoelectric ceramic actuator is used for driving the second lens carrier to do linear motion along the optical axis direction;
the pre-pressing unit comprises a first pre-pressing component for providing pre-pressing force for the first piezoelectric ceramic actuator and a second pre-pressing component for providing pre-pressing force for the second piezoelectric ceramic actuator;
the position sensing unit comprises a first position sensing assembly for sensing the displacement of the first lens carrier relative to the base and a second position sensing assembly for sensing the displacement of the second lens carrier relative to the first lens carrier.
The front end of the base is provided with a first light hole which is communicated with a lens fixing groove where a first fixed lens group is located and a first lens carrier, the first lens carrier is provided with a second light hole which is communicated with the lens fixing groove where a first movable lens group is located and a carrier mounting groove, the second lens carrier is provided with a third light hole which is communicated with the carrier mounting groove and a lens fixing groove where a second movable lens group is located, the rear end of the base is provided with a fourth light hole which is communicated with the lens fixing groove where the second fixed lens group is located and the outside, the front side of the lens fixing groove where the first fixed lens group is located is communicated with the outside, the top surface of the protective shell is provided with a skylight which is convenient for placing each lens group, and a protective cover plate is additionally fixed on the top surface of the protective shell.
Foretell primary and secondary formula piezoelectric actuator, the left and right both sides of first camera lens carrier are equipped with alar part and are equipped with the guiding hole on the alar part respectively, be equipped with in the guiding hole with guiding axle complex bush, frictional force has between bush and the guiding axle, the guiding axle is parallel with the optical axis direction.
Foretell primary and secondary formula piezoelectric actuator, the roll subassembly is including the slide of locating carrier mounting groove one side inner wall, locate the ball groove of second camera lens carrier one side outer wall, locate the ball between ball groove and the slide, carrier mounting groove open end is equipped with spacing separation blade to avoid the second camera lens carrier to slide out the carrier mounting groove.
Foretell primary and secondary formula piezoelectric actuator, first piezoceramics actuator includes the drive guide arm, locates the first piezoceramics of drive guide arm one end, is close to first piezoceramics and locates first snap ring on the drive guide arm, locates the second snap ring of the drive guide arm other end, the drive guide arm is parallel with the optical axis direction, first snap ring and second snap ring joint both ends before the base, back respectively.
In the above primary-secondary piezoelectric driving device, the first pre-pressing assembly includes an upper friction plate and a lower friction plate corresponding to the upper friction plate, the upper surface of a wing portion of the first lens carrier is used for fixing the lower friction plate, an upper wing plate used for fixing the upper friction plate is additionally arranged on the lateral side of the first lens carrier, and the upper friction plate and the lower friction plate jointly clamp the driving guide rod of the first piezoelectric ceramic actuator and generate a pre-pressing friction force on the driving guide rod.
The second piezoelectric ceramic actuator comprises second piezoelectric ceramic, a second friction plate attached to the inner side surface of the second piezoelectric ceramic, and a first friction plate capable of producing relative friction motion with the inner side surface of the second friction plate, a rectangular mounting groove for accommodating the first friction plate is formed in the outer wall of the second lens carrier, and a rectangular mounting opening for accommodating the second friction plate is formed in the side wall of the carrier mounting groove of the first lens carrier.
Foretell primary and secondary formula piezoelectric actuator, the leaf spring at the left and right both ends of piezoelectric ceramic fixed plate, the limit baffle who locates the piezoelectric ceramic fixed plate outside are located including piezoelectric ceramic fixed plate, the symmetry that are used for fixing at the second piezoelectric ceramic lateral surface of second piezoelectric ceramic actuator to second pre-compaction subassembly, the other end and the first camera lens carrier outside of leaf spring are connected fixedly, the limit baffle middle part is equipped with the spacing groove that corresponds piezoelectric ceramic fixed plate, and limit baffle's upper and lower both ends are connected fixedly with the first camera lens carrier outside, and the leaf spring utilizes and reaches the pre-compaction effect with the difference in height of being connected the face of piezoelectric ceramic fixed plate and first camera lens carrier.
In the primary-secondary piezoelectric driving device, the first position sensing assembly includes a position sensor i and a signal receiver i corresponding to the position sensor i, and the second position sensing assembly includes a position sensor ii and a signal receiver ii corresponding to the position sensor ii; an inductor fixing groove I for mounting a position inductor I is formed in one side of the bottom of the first lens carrier, and a receiver fixing groove I for mounting a signal receiver I is formed in the upper surface of the bottom plate of the base; a receiver fixing groove II for mounting a signal receiver II is formed in the bottom of the carrier fixing groove of the first lens carrier, and an inductor fixing groove II for mounting a position inductor II is formed in the bottom of the second lens carrier; a metal film is arranged at the bottom of the first lens carrier, one end of the metal film is connected with a conductive part on the base through bending, and the bottom of the signal receiver II is in contact with the metal film through a receiver fixing groove II; the signal receiver I is connected with a conductive part arranged in the base through the receiver fixing groove I.
Foretell primary and secondary formula piezoelectric actuator, the base adopts insulating material to make, including bottom plate and barricade, built-in increase intensity in the base, get the metal material area of electricity and signal transmission effect, the bottom plate edge is equipped with the conductive terminal of being connected with the metal material area and draws forth the district, the base is equipped with the electrode connecting portion that correspond first piezoceramics actuator, be equipped with metal shrapnel between the limit baffle of second pre-compaction subassembly and the piezoceramics fixed plate, metal shrapnel one end is connected with the second piezoceramics of second piezoceramics actuator, and the leaf spring that one end passes through second pre-compaction subassembly in addition draws forth the district electricity with conductive terminal and is connected.
The utility model has the beneficial effects that:
1. the utility model adopts a driving structure of a piezoelectric actuator, solves the problem of poor effect when the existing camera lens driving device realizes large displacement, large load and high-speed focusing functions, and particularly adopts a first piezoelectric ceramic actuator to drive a first lens carrier carrying a first movable lens group and a second lens carrier, because the second lens carrier carries a second movable lens group, the synchronous movement of the movable lens carriers is realized, and simultaneously, the second piezoelectric ceramic actuator can be adopted to drive the second lens carrier to move back and forth in the first lens carrier through balls, so that the quick focusing and anti-shaking functions of the lens are better realized.
2. The pre-pressing assemblies are respectively arranged for each piezoelectric actuator, so that the friction force of the piezoelectric actuators can be ensured to be in the optimal state, and the focusing precision is obviously improved.
Drawings
FIG. 1 is an external view of the present invention;
FIG. 2 is a schematic view of the present invention with the cover plate removed;
FIG. 3 is a schematic diagram of the internal structure of the lens group of the present invention;
FIG. 4 is a schematic structural view of the base of the present invention;
FIG. 5 is a schematic structural diagram of the base, the piezoelectric driving unit, the pre-pressing unit and the position sensing unit according to the present invention;
fig. 6 is a schematic structural view of a first lens carrier of the present invention;
fig. 7 is a schematic structural view of a first lens carrier and a guide shaft of the present invention;
fig. 8 is a schematic structural view of a second lens carrier of the present invention;
fig. 9 is a schematic view of another angle structure of a second lens carrier of the present invention;
FIG. 10 is a schematic assembly diagram of a first lens carrier and a second lens carrier according to the present invention;
FIG. 11 is an assembly diagram of the base, the first lens carrier and the second lens carrier of the present invention;
FIG. 12 is a schematic structural view of a first piezoceramic actuator of the present invention;
FIG. 13 is a schematic structural view of a second piezoceramic actuator of the present invention;
fig. 14 is a schematic structural view of a first pre-pressing assembly of the present invention;
FIG. 15 is a schematic view of a second pre-press assembly according to the present invention;
fig. 16 is a schematic view of the construction of the protective case of the present invention;
fig. 17 is a schematic structural view of the protective cover of the present invention.
In the figure: 1. a protective cover plate; 2. protective shell, 201. skylight; 3. the structure comprises a base, 301, a lens fixing groove, 302, a conductive terminal lead-out area, 303, a first light hole, 304, a lens fixing groove, 305, a lens fixing groove, 306, a receiver fixing groove I, 307 and a U-shaped groove; 4. a first fixed lens group; 5. a first moving lens group; 6. a second lens carrier 601, a ball groove 602, a lens fixing groove 603, a third unthreaded hole 604, a rectangular mounting groove; 7. a first lens carrier 701, a carrier mounting groove, 702, a slide, 703, a receiver fixing groove ii, 704, an open end, 705, an upper wing plate, 706, a wing, 707, a guide hole, 708, a lens fixing groove, 709, a second light hole, 710, a rectangular mounting opening; 8. a second group of moving lenses; 9. a guide shaft; 10. a second fixed lens group; 11. 1101, 1102, 1103, 1104, and second snap ring; 12. the clamping device comprises a first pre-pressing assembly, 1201, an upper friction plate, 1201a fixing part I, 1201b, a telescopic buffering part, 1201c, a horizontal clamping surface, 1202, a lower friction plate, 1202a fixing part II, 1202b and a V-shaped clamping surface; 13. a second pre-pressing assembly 1301, a piezoelectric ceramic fixing plate 1302, a plate spring 1303 and a limiting baffle plate; 14. a position sensor I; 15. a position sensor II; 16. a second piezoceramic actuator 1601. first friction plate 1602. second friction plate 1603. second piezoceramic; 17. a metal flexible sheet; 18. and a ball.
Detailed Description
The utility model is described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 17, the primary-secondary piezoelectric driving device includes a base 3, a protective case 2, an image pickup lens carrier assembly, a piezoelectric driving unit, a pre-pressing unit, and a position sensing unit.
The base 3 plays a role in supporting and limiting, is made of insulating materials and comprises a bottom plate and a retaining wall. The left and right sides of the base 3 are respectively fixed with guide shafts 9 parallel to each other, and the front and rear ends are provided with lens fixing grooves 301 and 305 for mounting the first fixed lens group 4 and the second fixed lens group 10. The base 3 is internally provided with a metal material belt for increasing strength, getting electricity and transmitting signals, and the edge of the bottom plate is provided with a conductive terminal leading-out area 302 connected with the metal material belt. The metal material belt is of a plurality of discontinuous structures, and the material is one of elastic metals, such as iron, copper alloy, stainless steel and the like. The protective housing 2 and the base 3 are buckled into a whole to form a protective cavity, the top surface of the protective housing 2 is provided with a skylight 201 for conveniently placing each lens group, and the top surface of the protective housing 2 is additionally fixed with a protective cover plate 1.
The camera lens carrier assembly is positioned in the protection cavity and comprises a first lens carrier 7 capable of sliding along the guide shaft 9 and a second lens carrier 6 which is arranged on the first lens carrier 7 and can move relative to the first lens carrier. A lens fixing groove 708 for fixing the first movable lens group 5 is formed in the front of the first lens carrier 7, a carrier mounting groove 701 for mounting the second lens carrier 6 is formed in the rear of the first lens carrier 7, and a rolling member is disposed between the carrier mounting groove 701 and the second lens carrier 16. The second lens carrier 6 is provided with a lens fixing groove 602 for fixing the second moving lens group 8. The first fixed lens group 4, the second fixed lens group 10, the first moving lens group 5 and the second moving lens group 8 are arranged on the same optical axis. The front end of the base 3 is provided with a first light hole 303 communicating a lens fixing groove 301 where a first fixed lens group 4 is located with a first lens carrier 7, the first lens carrier 7 is provided with a second light hole 709 communicating a lens fixing groove 708 where a first movable lens group 5 is located with a carrier mounting groove 701, the second lens carrier 6 is provided with a third light hole 603 communicating the carrier mounting groove 701 with a lens fixing groove 602 where a second movable lens group 8 is located, the rear end of the base 3 is provided with a fourth light hole 304 communicating a lens fixing groove 305 where a second fixed lens group 10 is located with the outside, and the front side of the lens fixing groove 301 where the first fixed lens group 4 is located is communicated with the outside. The light is incident from the first fixed lens group 4, and sequentially exits through the first fixed lens group 4, the first light hole 303, the first moving lens group 5, the second light hole 709, the third light hole 603, the second moving lens group 8, the second fixed lens group 10, and the fourth light hole 304, and is collected by the imaging chip.
The left side and the right side of the first lens carrier 7 are respectively provided with a wing portion 706, a guide hole 707 is arranged on the wing portion 706, a bushing matched with a guide shaft 9 is arranged in the guide hole 707, friction force is provided between the bushing and the guide shaft 9, and the guide shaft 9 is parallel to the optical axis direction. The rolling assembly includes a slide 702 disposed on an inner wall of one side of the carrier mounting groove 701, a ball groove 601 disposed on an outer wall of one side of the second lens carrier 6, and a ball 18 disposed between the ball groove 601 and the slide 702. The open end 704 of the carrier mounting groove 701 is provided with a limiting block piece (omitted in the figure) to prevent the second lens carrier 6 from sliding out of the carrier mounting groove 701. When the first lens carrier 7 is driven by a driving force, the focusing of the front and back movement is realized along the guide shaft 9, and when the second lens carrier 6 is driven by a driving force, the focusing of the front and back movement is realized under the action of the ball assembly.
The piezoelectric driving unit includes a first piezoelectric ceramic actuator 11 for driving the first lens carrier 7 to move linearly in the optical axis direction, and a second piezoelectric ceramic actuator 16 for driving the second lens carrier 6 to move linearly in the optical axis direction. The pre-pressing unit comprises a first pre-pressing assembly 12 for providing pre-pressing force to the first piezoceramic actuator 11 and a second pre-pressing assembly 13 for providing pre-pressing force to the second piezoceramic actuator 16.
In this embodiment, the first piezo actuator 11 includes a driver guide 1103, a first piezo 1101 disposed at one end of the driver guide 1103, a first snap ring 1102 disposed on the driver guide 1103 near the first piezo 1101, and a second snap ring 1104 disposed at the other end of the driver guide 1103. The driving guide rod 1103 is parallel to the optical axis, and the first elastic snap ring 1102 and the second elastic snap ring 1104 are respectively clamped at the front end and the rear end of the base 3. The base 3 is provided with a U-shaped groove structure 307 facilitating clamping. The first pre-pressing assembly 12 includes an upper friction plate 1201 and a lower friction plate 1202 corresponding to the upper friction plate 1201. The upper surface of a side wing portion 706 of the first lens carrier 7 is used for fixing the lower friction plate 1202, and an upper wing plate 705 for fixing the upper friction plate 1201 is further arranged on the side of the first lens carrier 7. The upper friction plate 1201 and the lower friction plate 1202 jointly clamp the driving guide 1103 of the first piezoceramic actuator 11, and generate a pre-pressing friction force on the driving guide 1103, so that focusing accuracy is enhanced. The upper friction plate 1201 is a U-shaped structure as a whole, and is composed of two fixing portions i 1201a connected to the first lens carrier 7, a horizontal holding surface 1201c in contact with the driving guide 1103, and a plurality of stretchable buffer portions 1201b connected between the edges of the fixing portions i 1201a and the horizontal holding surface 1201c. The lower friction plate 1202 is composed of two fixing portions ii 1202a connected to the first lens carrier 7, and a V-shaped clamping surface 1202b connected between the two fixing portions ii 1202a, and the horizontal clamping surface 1201c and the V-shaped clamping surface 1202b together clamp the drive guide 1103.
The position sensing unit comprises a first position sensing component for sensing the displacement of the first lens carrier 7 relative to the base 3 and a second position sensing component for sensing the displacement of the second lens carrier 6 relative to the first lens carrier 7. The first position sensing assembly comprises a position sensor I14 and a signal receiver I (omitted in the figure) corresponding to the position sensor I14. The second position sensing assembly comprises a position sensor II 15 and a signal receiver II (omitted in the figure) corresponding to the position sensor II 15. A sensor fixing groove i (omitted in the figure) for installing the position sensor i 14 is formed in one side of the bottom of the first lens carrier 7, and a receiver fixing groove i 306 for installing the signal receiver i is formed in the upper surface of the bottom plate of the base 3. The bottom surface of the carrier fixing groove 701 of the first lens carrier 7 is provided with a receiver fixing groove ii 703 for mounting a signal receiver ii, and the bottom of the second lens carrier 6 is provided with a sensor fixing groove ii (omitted in the figure) for mounting a position sensor ii 15. The bottom of the first lens carrier 7 is provided with a metal film 17, one end of the metal film 17 is connected with the conductive part on the base 3 through a bend, and the bottom of the signal receiver ii (omitted in the figure) is contacted with the metal film 17 through a receiver fixing groove ii 703. The signal receiver I is connected with a conductive part arranged in the base 3 through a receiver fixing groove I306.
The base 3 is provided with an electrode connecting portion corresponding to the first piezoceramic actuator 11, a metal spring (omitted in the figure) is arranged between the limit baffle 1303 of the second pre-pressing assembly 13 and the piezoceramic fixing plate 1301, one end of the metal spring is connected with the second piezoceramic 1603 of the second piezoceramic actuator 16, and the other end of the metal spring is electrically connected with the conductive terminal lead-out area 302 through the plate spring 1302 of the second pre-pressing assembly 13.
When the lens focusing device works, the first piezoelectric ceramic 1101 of the first piezoelectric ceramic actuator 11 generates regular telescopic deformation after being electrified and transmits the deformation to the driving guide rod 1103, the driving guide rod 1103 generates linear displacement and drives the first lens carrier 7 to move along the optical axis direction through the upper friction plate 1201 and the lower friction plate 1202, so that the focusing function is realized, and the focusing precision is improved under the action of the feedback function of the first position sensing assembly; second piezoceramics 1603 of second piezoceramics actuator 16 produces the flexible deformation of regularity after the electricity, acts on second friction plate 1602 through second pre-compaction subassembly 13, and rethread second friction plate 1602 acts on first friction plate 1601, and first friction plate 1601 drives second lens carrier 6 and moves along the optical axis direction, realizes further focusing function to improve focusing accuracy under the effect of the feedback function of second position sensing subassembly.
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 (10)
1. A primary-secondary piezoelectric driving device, comprising:
the left side and the right side of the base are respectively fixed with guide shafts which are parallel to each other, and the front end and the rear end of the base are provided with lens fixing grooves for mounting a first fixed lens group and a second fixed lens group;
the protective shell is buckled with the base into a whole and forms a protective cavity;
the camera lens carrier assembly is positioned in the protection cavity and comprises a first lens carrier and a second lens carrier, wherein the first lens carrier can slide along the guide shaft, the second lens carrier is arranged on the first lens carrier and can move relative to the first lens carrier, a lens fixing groove used for fixing a first movable lens group is formed in the front part of the first lens carrier, a carrier mounting groove used for mounting the second lens carrier is formed in the rear part of the first lens carrier, a rolling assembly is arranged between the carrier mounting groove and the second lens carrier, a lens fixing groove used for fixing a second movable lens group is formed in the second lens carrier, and the first fixed lens group, the second fixed lens group, the first movable lens group and the second movable lens group are arranged on the same optical axis;
the piezoelectric driving unit comprises a first piezoelectric ceramic actuator and a second piezoelectric ceramic actuator, wherein the first piezoelectric ceramic actuator is used for driving the first lens carrier to do linear motion along the optical axis direction, and the second piezoelectric ceramic actuator is used for driving the second lens carrier to do linear motion along the optical axis direction;
the pre-pressing unit comprises a first pre-pressing component for providing pre-pressing force for the first piezoelectric ceramic actuator and a second pre-pressing component for providing pre-pressing force for the second piezoelectric ceramic actuator;
the position sensing unit comprises a first position sensing assembly for sensing the displacement of the first lens carrier relative to the base and a second position sensing assembly for sensing the displacement of the second lens carrier relative to the first lens carrier.
2. A primary-secondary piezoelectric actuator as claimed in claim 1, wherein: the novel lens group protection device comprises a base, a first lens carrier and a second lens carrier, and is characterized in that a first light hole communicated with a lens fixing groove where a first fixed lens group is located and the first lens carrier is arranged at the front end of the base, a second light hole communicated with a lens fixing groove where a first movable lens group is located and a carrier mounting groove is arranged on the first lens carrier, a third light hole communicated with the carrier mounting groove and a lens fixing groove where a second movable lens group is located is arranged on the second lens carrier, a fourth light hole communicated with the lens fixing groove where the second fixed lens group is located and the outside is arranged at the rear end of the base, the front side of the lens fixing groove where the first fixed lens group is located is communicated with the outside, a skylight convenient for placing each lens group is arranged on the top surface of a protection shell, and a protection cover plate is additionally fixed on the top surface of the protection shell.
3. A primary-secondary piezoelectric actuator as claimed in claim 1, wherein: the left side and the right side of the first lens carrier are respectively provided with a wing part and a guide hole on the wing part, a bushing matched with the guide shaft is arranged in the guide hole, friction force is provided between the bushing and the guide shaft, and the guide shaft is parallel to the direction of the optical axis.
4. A primary-secondary piezoelectric actuator as claimed in claim 1, wherein: the rolling assembly comprises a slide way arranged on the inner wall of one side of the carrier mounting groove, a ball groove arranged on the outer wall of one side of the second lens carrier, and balls arranged between the ball groove and the slide way, wherein a limiting blocking piece is arranged at the opening end of the carrier mounting groove so as to prevent the second lens carrier from sliding out of the carrier mounting groove.
5. A primary-secondary piezoelectric actuator as claimed in claim 1, wherein: the first piezoelectric ceramic actuator comprises a driving guide rod, first piezoelectric ceramic arranged at one end of the driving guide rod, a first elastic clamping ring arranged on the driving guide rod and close to the first piezoelectric ceramic, and a second elastic clamping ring arranged at the other end of the driving guide rod, wherein the driving guide rod is parallel to the direction of an optical axis, and the first elastic clamping ring and the second elastic clamping ring are respectively clamped at the front end and the rear end of the base.
6. A primary-secondary piezoelectric actuator as claimed in claim 1 or 5, wherein: the first pre-pressing assembly comprises an upper friction plate and a lower friction plate corresponding to the upper friction plate, the upper surface of one side wing part of the first lens carrier is used for fixing the lower friction plate, an upper wing plate used for fixing the upper friction plate is additionally arranged on the side of the first lens carrier, and the upper friction plate and the lower friction plate clamp a driving guide rod of the first piezoelectric ceramic actuator together and generate pre-pressing friction force on the driving guide rod.
7. A primary-secondary piezoelectric actuator as claimed in claim 1, wherein: the second piezoelectric ceramic actuator comprises second piezoelectric ceramic, a second friction plate attached to the inner side face of the second piezoelectric ceramic, and a first friction plate capable of producing relative friction motion with the inner side face of the second friction plate, a rectangular mounting groove for accommodating the first friction plate is formed in the outer wall of the second lens carrier, and a rectangular mounting opening for accommodating the second friction plate is formed in the side wall of the carrier mounting groove of the first lens carrier.
8. A primary-secondary piezoelectric actuator as claimed in claim 1 or 7, wherein: the second pre-compaction subassembly is including being used for fixing piezoelectric ceramic fixed plate, the symmetry at the left and right both ends of piezoelectric ceramic fixed plate, locating the limit baffle in the piezoelectric ceramic fixed plate outside at the second piezoelectric ceramic lateral surface of second piezoelectric ceramic actuator, the other end and the first camera lens carrier outside of leaf spring are connected fixedly, the limit baffle middle part is equipped with the spacing groove that corresponds piezoelectric ceramic fixed plate, and limit baffle's upper and lower both ends are connected fixedly with the first camera lens carrier outside, and the leaf spring utilizes and reaches the pre-compaction effect with the difference in height of being connected the face of piezoelectric ceramic fixed plate and first camera lens carrier.
9. A primary-secondary piezoelectric actuator as claimed in claim 1, wherein: the first position sensing assembly comprises a position sensor I and a signal receiver I corresponding to the position sensor I, and the second position sensing assembly comprises a position sensor II and a signal receiver II corresponding to the position sensor II; an inductor fixing groove I for mounting a position inductor I is formed in one side of the bottom of the first lens carrier, and a receiver fixing groove I for mounting a signal receiver I is formed in the upper surface of the bottom plate of the base; a receiver fixing groove II for mounting a signal receiver II is formed in the bottom of the carrier fixing groove of the first lens carrier, and an inductor fixing groove II for mounting a position inductor II is formed in the bottom of the second lens carrier; a metal film is arranged at the bottom of the first lens carrier, one end of the metal film is connected with a conductive part on the base through bending, and the bottom of the signal receiver II is in contact with the metal film through a receiver fixing groove II; the signal receiver I is connected with a conductive part arranged in the base through the receiver fixing groove I.
10. A primary-secondary piezoelectric actuator as claimed in claim 1, wherein: the base adopts insulating material to make, including bottom plate and barricade, the built-in metal material area that increases intensity, gets electricity and signal transmission effect in the base, the bottom plate edge is equipped with the conductive terminal area of drawing forth of being connected with the metal material, the base is equipped with the electrode connecting portion that correspond first piezoceramics actuator, be equipped with metal shrapnel between the limit baffle of second pre-compaction subassembly and the piezoceramics fixed plate, metal shrapnel one end is connected with the second piezoceramics of second piezoceramics actuator, and the leaf spring that one end passes through the second pre-compaction subassembly in addition is drawn forth the district with conductive terminal and is connected.
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| CN202122497021.7U CN215953941U (en) | 2021-10-18 | 2021-10-18 | Primary-secondary piezoelectric driving device |
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| CN202122497021.7U CN215953941U (en) | 2021-10-18 | 2021-10-18 | Primary-secondary piezoelectric driving device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113777746A (en) * | 2021-10-18 | 2021-12-10 | 辽宁中蓝光电科技有限公司 | Primary-secondary piezoelectric driving device |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113777746A (en) * | 2021-10-18 | 2021-12-10 | 辽宁中蓝光电科技有限公司 | Primary-secondary piezoelectric driving device |
| CN113777746B (en) * | 2021-10-18 | 2024-07-30 | 辽宁中蓝光电科技有限公司 | Primary and secondary formula piezoelectricity drive arrangement |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A seed mother piezoelectric driving device Effective date of registration: 20220929 Granted publication date: 20220304 Pledgee: China Construction Bank Corporation Panjin branch Pledgor: Liaoning Zhonglan Photoelectric Technology Co.,Ltd. Registration number: Y2022210000157 |
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