WO2022000551A1 - 镜头驱动装置和电子设备 - Google Patents

镜头驱动装置和电子设备 Download PDF

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Publication number
WO2022000551A1
WO2022000551A1 PCT/CN2020/101499 CN2020101499W WO2022000551A1 WO 2022000551 A1 WO2022000551 A1 WO 2022000551A1 CN 2020101499 W CN2020101499 W CN 2020101499W WO 2022000551 A1 WO2022000551 A1 WO 2022000551A1
Authority
WO
WIPO (PCT)
Prior art keywords
driving device
casing
lens
housing
lens barrel
Prior art date
Application number
PCT/CN2020/101499
Other languages
English (en)
French (fr)
Inventor
王洪兴
史卫领
郭顺
Original Assignee
诚瑞光学(常州)股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 诚瑞光学(常州)股份有限公司 filed Critical 诚瑞光学(常州)股份有限公司
Publication of WO2022000551A1 publication Critical patent/WO2022000551A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B5/06—Swinging lens about normal to the optical axis
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B5/08—Swing backs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules

Definitions

  • the utility model relates to the technical field of lenses, in particular to a lens driving device and electronic equipment.
  • the existing lens driving device has a complex structure, and can only drive the lens to rotate in the direction perpendicular to the optical axis, and the rotation direction is not comprehensive enough, so it is difficult to achieve a good anti-shake function.
  • An object of the present invention is to provide a lens driving device capable of improving the problem of an out-of-band suppression width being too narrow.
  • the present invention provides a lens driving device, characterized in that the lens driving device comprises:
  • the lens barrel is used to mount the lens
  • the lens barrel is installed in the first casing, and the lens barrel can move or rotate relative to the first casing;
  • the first casing is installed in the second casing, and the first casing can move or rotate relative to the second casing;
  • a first driving device and a second driving device the first driving device is provided between the lens barrel and the first housing and the second driving device is provided between the first housing and the first housing between the two housings; the first drive device is used to realize the movement or rotation of the lens barrel in the plane where the optical axis is located, and the second drive device is used to realize the lens barrel in the plane perpendicular to the optical axis. movement or rotation within;
  • the second driving device includes a piezoelectric deformation portion and a connecting member for supporting and fixing the piezoelectric deformation portion between the first casing and the second casing, and the piezoelectric deformation portion includes an opposite arrangement
  • the first end and the second end of the connecting piece include a first bracket and a second bracket, one end of the first bracket is fixed to the first shell, and the other end is fixed to the first end; the first bracket One end of the two brackets is fixed on the second end, and the other end is fixed on the second casing.
  • the piezoelectric deformation portion includes at least two stacked piezoelectric layers, so that the piezoelectric deformation portion generates a driving force perpendicular to the optical axis, and the acting direction of the driving force does not pass through any the geometric center of the first shell.
  • the piezoelectric deformation portion further includes an elastic sheet sandwiched between the at least two stacked piezoelectric layers, and the first end and the second end are opposite to the elastic sheet. both ends of .
  • the first casing is configured as a quadrangular prism with a first accommodating space, and includes a first bottom plate, four first side plates extending from the first bottom plate, and four first side plates extending from the first bottom plate.
  • a first cover plate connected to the first side plate, the first bottom plate, the first side plate and the first cover plate are enclosed to form a first accommodating space, and the first cover plate is provided with a through hole. the first light-passing hole of the first cover plate, and the lens barrel is located in the first accommodating space;
  • the second shell is set as a quadrangular prism with a second accommodating space, and includes a second bottom plate, four second side plates extending from the second bottom plate, and four second side plates connected with the four second side plates.
  • the second cover plate, the second bottom plate, the second side plate and the second cover plate are enclosed to form a second accommodating space, and the second cover plate is provided with a hole passing through the second cover plate
  • a second light-passing hole, the first housing is located in the second accommodating space, the first light-passing hole corresponds to the second light-passing hole, and the straight line where the optical axis is located passes through the the first light-passing hole and the second light-passing hole;
  • the second driving device includes four, which are located at the positions of the four first side plates close to the edge at equal intervals, and each of the second The first ends of the piezoelectric deformation parts of the driving device are respectively connected through one of the first brackets and one of the first side plates, and the second ends of the piezoelectric deformation parts of
  • first bracket and the first housing are integrally formed, and/or the second bracket and the second housing are integrally formed.
  • the first driving device includes a first magnetic steel assembly and a first coil assembly that are disposed opposite to each other, and one of the first magnetic steel assembly and the first coil assembly is fixed to the The first shell and the other are fixed to the lens barrel.
  • the lens driving device further includes a first fulcrum assembly, the first fulcrum assembly is located in the second accommodating space, and the first fulcrum assembly is respectively connected to the first base plate, the second fulcrum assembly The bottom plate is connected, and the first fulcrum assembly is used for supporting the first casing and enabling the first casing to rotate relative to the second casing.
  • the first fulcrum assembly includes a first ball and a first rolling groove, the first ball is disposed on the first bottom plate, the first rolling groove is disposed on the second bottom plate, and the first rolling groove is disposed on the second bottom plate.
  • a ball part is located in the first rolling groove, and the first ball can rotate relative to the first rolling groove.
  • the lens driving device further includes a first elastic component, the first elastic component is located in the second accommodating space, and the first elastic component is connected to the first side plate, the The second side plate is connected.
  • the present invention also provides an electronic device, which includes the above-mentioned lens driving device.
  • the first driving device can realize the movement or rotation of the lens barrel in the plane where the optical axis is located, and the second driving device realizes driving the first housing and the lens barrel in the first housing. Movement or rotation in the plane perpendicular to the optical axis, so that the lens in the lens barrel has multi-directional anti-shake, such as roll, pitch and yaw, and the roll is independent of the pitch and yaw, and the roll does not affect the pitch. and yaw, the anti-shake effect is good, and the connection mode of the piezoelectric deformation part is better, which is easy to realize.
  • FIG. 1 is a schematic three-dimensional structure diagram of a lens driving device provided by an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an exploded structure of a lens driving device provided by an embodiment of the present invention
  • FIG. 3 is another schematic diagram of an exploded structure of a lens driving device provided by an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an explosion structure of a first casing provided by an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an explosion structure of a second casing provided by an embodiment of the present invention.
  • 6A is a schematic top view of another explosion structure of the lens driving device provided by the embodiment of the present invention.
  • 6B is a schematic diagram of another exploded structure of the lens driving device provided by the embodiment of the present invention.
  • FIG. 7A is an enlarged schematic view of the structure at A in FIG. 6;
  • FIG. 7B is a first structural diagram of the shape change of the second driving device in FIG. 6 under the action of a voltage
  • FIG. 7C is a second structural diagram of the shape change of the second driving device in FIG. 6 under the action of a voltage
  • FIG. 8 is a schematic top view of the structure of the second housing, the first driving device and the first elastic component of the present invention.
  • FIG. 9 is a schematic diagram of an exploded structure of a lens driving device provided by another embodiment of the present invention.
  • Figure 10A is an enlarged schematic view of the structure at B in Figure 9;
  • FIG. 10B is a first structural diagram of the shape change of the second driving device in FIG. 9 under the action of a voltage
  • FIG. 10C is a second structural diagram of the shape change of the second driving device in FIG. 9 under the action of a voltage
  • FIG. 11 is a schematic diagram of another exploded structure of the lens driving device provided by the embodiment of the present invention.
  • FIG. 12 is a schematic three-dimensional structural diagram of a first elastic component provided by an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of another exploded structure of the lens driving device provided by the embodiment of the present invention.
  • FIG. 14 is a schematic front view of a partial structure of a lens driving device provided by an embodiment of the present invention.
  • FIG. 15 is a schematic left view of a partial structure of a lens driving device provided by an embodiment of the present invention.
  • 16 is a schematic three-dimensional structural diagram of a second elastic component provided by an embodiment of the present invention.
  • the present invention provides a lens driving device 10 .
  • the lens driving device 10 is used to drive the lens to move or rotate.
  • the lens driving device 10 includes a lens barrel 11 , a first housing 12 , a second housing 13 , a first driving device 14 , a second driving device 15 , a first fulcrum component 16 , a second fulcrum component 17 , and a first elastic component 18 and the second elastic component 19.
  • the lens barrel 11 is used to mount the lens, the lens barrel 11 is suspended in the first casing 12, and the lens barrel 11 can move or rotate relative to the first casing 12; the first casing 12 is installed in the second casing 12 Inside the casing 13, the first casing 12 can move or rotate relative to the second casing 13; the first fulcrum assembly 16 is located in the second casing 13, and the first fulcrum assembly 16 is connected to the first casing 12 and the second casing respectively.
  • the body 13 is connected, and the first housing 12 is rotatably connected to the second housing 13 through the first fulcrum component 16; the first elastic component 18 is located in the second housing 13, and the first elastic components 18 are respectively connected with the first housing 12.
  • the second shell 13 is connected; the second fulcrum assembly 17 is located in the first shell 12, the second fulcrum assembly 17 is respectively connected with the first shell 12 and the lens barrel 11, and the first shell 12 passes through the second fulcrum assembly 17 It is rotatably connected with the lens barrel 11; the second elastic component 19 is located in the first housing 12, the second elastic component 19 is respectively connected with the first housing 12 and the lens barrel 11, and the first driving device 14 is arranged on the lens barrel 11 and the lens barrel 11.
  • first driving device 14 is used to realize the movement or rotation of the lens barrel 11 in the plane where the optical axis of the lens barrel 11 is located
  • the second driving device 15 is used to realize the movement or rotation of the lens barrel 11 in a plane perpendicular to the optical axis.
  • the first driving device 14 is arranged between the lens barrel 11 and the first housing 12 and the second driving device 15 is arranged between the first housing 12 and the second housing 13. instruction.
  • the shape of the lens barrel 11 matches the shape of the lens.
  • the material of the lens barrel 11 is not limited, for example, it can be plastic.
  • the first housing 12 is configured as a quadrangular prism having a first accommodating space
  • the first housing 12 includes a first bottom plate 121 , four first side plates 122 extending from the first bottom plate 121 , and The first cover plate 123 connected to the four first side plates 122, the first bottom plate 121, the first side plate 122 and the first cover plate 123 enclose a first accommodating space, and the lens barrel 11 and the lens are located in the first accommodating space. in the first accommodation space. It can be understood that a part of the lens may also be located outside the first accommodating space.
  • the first cover plate 123 is provided with a first light-passing hole 1231 penetrating the first cover plate 123 and communicating with the first accommodating space, so that the lens mounted on the lens barrel 11 can take pictures or take pictures through the first light-passing hole 1231. camera. Wherein, the first cover plate 123 is parallel to the first bottom plate 121 .
  • the second casing 13 is configured as a quadrangular prism with a second accommodating space
  • the second casing 13 includes a second bottom plate 131 , a second side plate 132 extending from the second bottom plate 131 , and a second bottom plate 132 .
  • the second cover plate 133 connected to the side plate 132 , the second bottom plate 131 , the second side plate 132 and the second cover plate 133 enclose a second accommodating space
  • the first housing 12 is located in the second housing 13 . within the accommodation space.
  • the second side plate 132 and the first side plate 122 can be provided with holes for allowing the wires to pass through the first side plate 122 and the second side plate 132 to respectively drive the first driving device 14 and the second driving device 14.
  • the device 15 etc. are powered.
  • the second cover plate 133 is provided with a second light-passing hole 1331 penetrating the second cover plate 133 and communicating with the second accommodating space.
  • the straight line where the optical axis of the lens is located passes through the first light-passing hole 1231 respectively. and the second light-passing hole 1331 , the lens mounted on the lens barrel 11 can take pictures or images through the first light-passing hole 1231 and the second light-passing hole 1331 .
  • the second driving device 15 includes four, and the second driving devices 15 are located at the positions of the four first side plates 122 close to the edges at equal intervals.
  • Each second driving device 15 includes a piezoelectric deformation portion 151 and a connecting member 152 that supports and fixes the piezoelectric deformation portion 151 between the first housing 12 and the second housing 13 . It can be understood that when the second driving device 15 is disposed between the lens barrel 11 and the first casing 12 , the connecting member 152 is used to support and fix the piezoelectric deformation portion 151 between the lens barrel 11 and the first casing 12 .
  • connection member 152 is used to support and fix the piezoelectric deformation portion 151 between the first casing 12 and the second casing 13 for description.
  • each of the four second driving devices 15 is connected to a first housing 12 and a second housing 13 respectively.
  • the connector 152 includes a first bracket 1521 and a second bracket 1522.
  • One end of the first bracket 1521 is fixed to one of the first side plate 122 of the first shell 12 or the second side plate 132 of the second shell 13.
  • the other end of the brackets 1521 is fixed at the middle position of the piezoelectric deformation portion 151
  • the number of second brackets 1522 is two
  • one end of the second brackets 1522 is fixed at the center of the piezoelectric deformation portion 151 with the middle position as the center of symmetry.
  • the other end of the second bracket 1522 is fixed to the other of the first side plate 122 of the first casing 12 or the second side plate 132 of the second casing 13 .
  • the two ends of the piezoelectric deformation portion 151 can be interpreted as: a general piezoelectric deformation portion can be lengthened or shortened under the action of an electric field, and the two ends are the piezoelectric deformation portion along which the piezoelectric deformation portion lengthens or shortens. both ends in the direction.
  • the first bracket 1521 is fixed to the first side plate 12 of the first casing 12
  • the second bracket 1522 is fixed to the second side plate 132 of the second casing 13.
  • the middle positions of the piezoelectric deformation parts 151 of the two driving devices 15 are respectively connected by a first bracket 1521 and a first side plate 122 , and the piezoelectric deformation parts 151 of each second driving device 15 are symmetrical about the middle position Both ends of the center are connected by a second bracket 1522 and a second side plate 132 respectively.
  • the first bracket 1521 is integrally formed with the first housing 12
  • the second bracket 1522 is integrally formed with the second housing 13 .
  • first bracket 1521 is fixed to the second side plate 132 of the second casing 13 and the second bracket 1522 is fixed to the first side plate 12 of the first casing 12, the first bracket 1521 and the second casing 13 is integrally formed, and/or the second bracket 1522 is integrally formed with the first housing 12 .
  • the number of the first brackets 1521 , the number of the second brackets 1522 and the number of the piezoelectric deformation parts 151 are the same.
  • the middle part of the piezoelectric deformation part 151 is connected to the first side plate 122 of the first shell 12 through a first bracket 1521 , and the two ends of the piezoelectric deformation part 151 are connected to the second part of the second shell 13 through a second bracket 1522 .
  • the side plates 132 are connected.
  • the second bracket 1522 includes two second sub-brackets, and two ends of the piezoelectric deformation portion 151 are respectively connected to the second side plate 132 of the second housing 13 through one second sub-bracket.
  • each of the first brackets 1521 is connected to a first side plate 122
  • each of the second brackets 1522 is connected to a second side plate 132 .
  • the piezoelectric deformation portion 151 has a piezoelectric effect: when an electric field is applied in the polarization direction of the piezoelectric deformation portion 151 , the piezoelectric deformation portion 151 will deform. After the electric field is removed, the deformation of the piezoelectric deformation portion 151 disappears. Therefore, after a voltage is applied to the piezoelectric deformation portion 151, the second driving device 15 is deformed, thereby driving the first housing 12 and the devices in the first housing 12, such as the lens barrel 11 in a plane perpendicular to the optical axis. movement or rotation.
  • the piezoelectric deformation portion 151 includes four, and the number of the piezoelectric deformation portion 151 is the same as that of the first bracket 1521 .
  • Each piezoelectric deformation portion 151 includes at least two stacked piezoelectric layers, so that the piezoelectric deformation portion 151 generates a driving force perpendicular to the optical axis, and the acting direction of the driving force does not pass through the first casing. geometric center.
  • the piezoelectric deformation portion 151 includes a first piezoelectric layer 1511 and a second piezoelectric layer 1513 that are stacked in sequence.
  • the middle of the first piezoelectric layer 1511 is connected to the first support 1521 , and the two ends of at least one of the first piezoelectric layer 1511 and the second piezoelectric layer 1513 with the middle position as the center of symmetry are connected to the second support 1522 connect.
  • each piezoelectric deformation portion 151 is deviated from the center of the first side plate 122 , so that the acting direction of the driving force of the piezoelectric deformation portion 151 does not pass through the geometric center of the first housing 12 .
  • the piezoelectric deformation portion 151 further includes an elastic sheet 1512 sandwiched between the at least two stacked piezoelectric layers, and one end of the second bracket 1522 is fixed to the middle position of the elastic sheet 1512 are two ends of the symmetrical center, and the other end is fixed to the second shell 12 .
  • the two ends of the elastic sheet are in the same direction as the two ends of the piezoelectric layer, which can be interpreted as the two ends of the elastic sheet along the direction in which the piezoelectric layer becomes longer or shorter. That is, the piezoelectric deformation portion 151 includes a first piezoelectric layer 1511 , an elastic sheet 1512 and a second piezoelectric layer 1513 that are stacked in sequence.
  • the projection of the first piezoelectric layer 1511 and the second piezoelectric layer 1513 in the direction perpendicular to the optical axis falls on the elastic sheet 1512, the middle of the first piezoelectric layer 1511 is connected to the first bracket 1521, and the elastic sheet 1512 The two ends with the middle position as the center of symmetry are connected with the second bracket 1522 .
  • the first piezoelectric layer 1511 is deformed under the action of an external voltage.
  • the second piezoelectric layer 1513 also deforms under the action of an external voltage.
  • the material of the elastic sheet 1512 is not limited.
  • the elastic sheet 1512 is a steel sheet, and the elastic sheet is passively deformed under the deformation of the first piezoelectric layer 1511 and the second piezoelectric layer 1512.
  • the arrangement of the elastic sheet is beneficial to The amount of deformation of the piezoelectric deformation portion 151 is amplified, and more of it is converted into a torque force that pushes the first housing to rotate.
  • the first piezoelectric layer 1511 and the second piezoelectric layer 1513 are subjected to an external voltage, the first piezoelectric layer 1511 is shortened, the second piezoelectric layer 1513 is elongated, or the first piezoelectric layer 1513 is elongated.
  • the first piezoelectric layer 1511 is elongated and the second piezoelectric layer 1513 is shortened, so that the piezoelectric deformation portion 151 is concave or convex at the same time. Concave or convex to drive the movement or rotation of the first housing 12 and the lens barrel 11 in the plane perpendicular to the optical axis. It can be understood that the elastic sheet 1512 may not be provided.
  • the piezoelectric deformation portion 151 may also be connected to the first casing 12 and the second casing 13 in other ways.
  • the piezoelectric deformation portion 151 includes a first end 1514 and a second end 1515 disposed opposite to each other.
  • One end of the first bracket 1521 is fixed to the first side plate 122 of the first housing 12
  • the other end of the first bracket 1521 is fixed to the first side plate 122 of the first housing 12 .
  • One end 1514; here, the first end 1514 and the second end 1515 are the two ends of the piezoelectric deformation portion 151 along the lengthening or shortening direction thereof.
  • One end of the second bracket 1522 is fixed to the second end 1515 , and the other end of the second bracket 1522 is fixed to the second side plate 132 of the second casing 13 .
  • the number of piezoelectric deformation parts 151 , the number of first brackets 1521 and the number of second brackets 1522 are the same.
  • Each piezoelectric deformation portion 151 includes at least two stacked piezoelectric layers, so that the piezoelectric deformation portion 151 generates a driving force perpendicular to the optical axis, and the acting direction of the driving force does not pass through the first casing. geometric center.
  • the piezoelectric deformation portion 151 includes a first piezoelectric layer 1511 and a second piezoelectric layer 1513 that are stacked in sequence.
  • the piezoelectric deformation portion 151 further includes an elastic sheet 1512 sandwiched between the at least two stacked piezoelectric layers, and the first end and the second end are the elastic sheet 1512 along the piezoelectric Both ends of the layer in the direction of lengthening or shortening. That is, the piezoelectric deformation portion 151 includes a first piezoelectric layer 1511 , an elastic sheet 1512 and a second piezoelectric layer 1513 that are stacked in sequence. The projection of the first piezoelectric layer 1511 and the second piezoelectric layer 1513 in a direction perpendicular to the optical axis falls on the elastic sheet 1512 .
  • first bracket 1521 is fixed to the first side plate 122 of the first casing 12 , the other end of the first bracket 1521 is fixed to the first end; one end of the second bracket 1522 is fixed to the second end, and the other end of the second bracket 1522 is fixed to the first end.
  • the second side plate 132 of the second casing 13 The first bracket 1521, the piezoelectric deformation portion 151 and the second bracket 1522 are in a zigzag shape, forming a cantilever beam structure.
  • the driving device of this cantilever beam structure can generate a larger torque force under the same deformation amount. Makes the lens stabilization system more sensitive.
  • the first bracket 1521 and the second bracket 1522 are located on two sides of the piezoelectric deformation portion 151 respectively.
  • the first piezoelectric layer 1511 and the second piezoelectric layer 1513 are subjected to an external voltage, the first piezoelectric layer 1511 is shortened, the second piezoelectric layer 1513 is elongated, or the first piezoelectric layer 1513 is stretched.
  • the electric layer 1511 is elongated and the second piezoelectric layer 1513 is shortened, so that the piezoelectric deformation portion 151 is concave or convex at the same time, and the elastic sheet 1512 is concave as the first piezoelectric layer 1511 and the second piezoelectric layer 1513 are deformed. Or outwardly convex, so as to drive the movement or rotation of the first housing 12 and the lens barrel 11 therein in a plane perpendicular to the optical axis.
  • the first fulcrum component 16 is located in the second accommodating space, the first fulcrum component 16 is connected to the first bottom plate 121 and the second bottom plate 131 respectively, and the first fulcrum component 16 is used to support the The first casing 12 can rotate relative to the second casing 13 .
  • the first fulcrum assembly 16 includes a first ball assembly 161 and a first rolling groove 162 , one of the first ball assembly 161 and the first rolling groove 162 is disposed on the first bottom plate 121 , and the first ball assembly 161 The other one of the first rolling grooves 162 is disposed on the second bottom plate 131 , and the first ball assembly 161 can rotate relative to the first rolling grooves 162 .
  • the first ball assembly 161 includes a first base 1611 and a first ball 1612 connected to the first base 1611 .
  • the first base 1611 is connected to the first bottom plate 121 or the second bottom plate 131 .
  • the first sphere 1612 is disposed on the first bottom plate 121 .
  • the first rolling groove 162 is a groove, the first ball 1612 is partially located in the first rolling groove 162 , and the first ball 1612 can rotate relative to the first rolling groove 162 .
  • the first rolling groove 162 is disposed on the second bottom plate 131 . It can be understood that a boss may be provided on the second bottom plate 131 , and the first rolling groove 162 is formed on the boss of the second bottom plate 131 .
  • the first elastic component 18 is located in the second accommodating space, and the first elastic component 18 is connected to the first side plate 122 and the second side plate 132 respectively.
  • the first elastic component 18 is used to support the first casing 12 .
  • the first elastic assembly 18 includes a first frame body 181, a second frame body 182 and a plurality of first elastic members 183.
  • the first frame body 181 is connected to the first side plate 122, and the second frame body 182 is connected to the The second side plate 132 is connected, two ends of the first elastic member 183 are respectively connected with the first frame body 181 and the second frame body 182 , and the first elastic member 183 is opposite to the first frame body 181 and the second frame body 182 .
  • the second frame body 182 is inclined.
  • the first frame body 181 is in the shape of a frame body, and the shapes surrounding the first frame body 181 and the outer wall of the first side plate 122 match. and the first side plate 122 can be better fixed.
  • the second side plate 132 is in the shape of a frame, the shape of the second frame body 182 matches the shape enclosed by the inner wall of the second side plate 132 , the second frame body 182 is attached to the inner wall of the second side plate 132 , and the second frame body 182 It can be better fixed with the second side plate 132 .
  • the first elastic member 183 is substantially elongated.
  • the first elastic member 183 has elasticity.
  • the included angle a between the first elastic member 183 and the second frame body 182 is less than 90 degrees.
  • the first elastic members 183 include four, and each of the first elastic members 183 corresponds to one of the first side plates 122 .
  • the specific type of the first driving device 14 is not limited, for example, the first driving device 14 is a piezoelectric driving device or an electromagnetic driving device.
  • the first driving device 14 is used to realize the movement or rotation of the lens barrel 11 in the plane where the optical axis is located, and the first driving device 14 is an electromagnetic driving device for description.
  • the electromagnetic drive device includes a plurality of them.
  • the electromagnetic drive means are distributed along a direction perpendicular to the optical axis. It can be understood that the electromagnetic drive devices can also be distributed unevenly, and it is sufficient to drive the movement or rotation of the lens barrel 11 in the plane where the optical axis is located.
  • the first driving device 14 includes a first coil assembly 141 and a first magnetic steel assembly 142 that are opposite to each other, and one of the first magnetic steel assembly 142 and the first coil assembly 141 is fixed to the first housing 12 , and the other is fixed to the lens barrel 11 . When the first coil assembly 141 is energized, a magnetic field can be generated to push the first magnetic steel assembly 142 to move, and further move or rotate in the plane where the optical axis is located.
  • the second fulcrum assembly 17 is located in the first accommodating space.
  • the second fulcrum assembly 17 is connected to the first bottom plate 121 and the lens barrel 11 respectively.
  • the second fulcrum assembly 17 is used to support the lens barrel 11 and can The lens barrel 11 is rotated relative to the first housing 12 .
  • the second fulcrum assembly 17 may have the same structure as the first fulcrum assembly 16 .
  • the second fulcrum assembly 17 includes a second ball assembly 171 and a second rolling groove 172 , one of the second ball assembly 171 and the second rolling groove 172 is disposed on the first bottom plate 121 , and the second ball assembly 171 The other one of the second rolling grooves 172 is disposed in the lens barrel 11 , and the second ball assembly 171 can rotate relative to the second rolling grooves 172 .
  • the second ball assembly 171 includes a second base 1711 and a second ball 1712 connected to the second base 1711 .
  • the second base 1711 is connected to the first bottom plate 121 or the lens barrel 11 .
  • the second sphere 1712 is disposed on the lens barrel 11 .
  • the second rolling groove 172 is a groove, the second ball 1712 is partially located in the second rolling groove 172 , and the second ball 1712 can rotate relative to the second rolling groove 172 .
  • the second rolling groove 172 is disposed on the first bottom plate 121 . It can be understood that a boss may be provided on the first bottom plate 121 , and the second rolling groove 172 is formed on the boss of the first bottom plate 121 .
  • the second elastic component 19 is located in the first accommodating space, and the second elastic component 19 is connected to the first side plate 122 and the lens barrel 11 respectively.
  • the second elastic component 19 is used to support the lens barrel 11 .
  • the structures of the second elastic component 19 and the first elastic component 18 are the same.
  • the second elastic assembly 19 includes a third frame body 191, a fourth frame body 192 and a plurality of second elastic members 193.
  • the third frame body 191 is connected to the lens barrel 11, and the fourth frame body 192 is connected to the first frame body 192.
  • the side plates 122 are connected, the two ends of the second elastic member 193 are respectively connected with the third frame body 191 and the fourth frame body 192, and the second elastic member 193 is opposite to the second frame body 182 and the second frame body 192.
  • the frame body 182 is inclined.
  • the third frame body 191 is in the shape of a frame body, the shapes of the cross-sections of the third frame body 191 and the outer surface of the lens barrel 11 are matched, the third frame body 191 is attached to the outer wall of the lens barrel 11 , and the third frame body 191 and the lens barrel 11 can be better fixed.
  • the fourth side plate is in the shape of a frame, the fourth frame 192 matches the shape enclosed by the inner wall of the first side plate 122, the second frame 182 and the inner wall of the first side plate 122 fit together, and the fourth frame 192 can And the first side plate 122 is better fixed.
  • the second elastic member 193 is substantially elongated.
  • the second elastic member 193 has elasticity.
  • the present invention also provides an electronic device, which includes the above-mentioned lens driving device 10 .
  • the type of the electronic device is not limited, and the electronic device may be a smart terminal, such as a mobile phone, a tablet, or a camera and other devices including a lens.
  • the first driving device can realize the movement or rotation of the lens barrel in the plane where the optical axis is located, and the second driving device can realize the driving of the first casing and the mirror in the first casing.
  • the movement or rotation of the tube in the plane perpendicular to the optical axis, so that the lens in the lens tube has multi-directional anti-shake, such as roll, pitch and yaw, and the roll is independent of the pitch and yaw.
  • the pitch and yaw, the anti-shake effect is good, and the connection method of the piezoelectric deformation part is better, which is easy to realize.

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Abstract

一种镜头驱动装置和电子设备。镜头驱动装置包括：镜筒；第一壳体，镜筒安装在第一壳体内；第二壳体，第一壳体安装在第二壳体内；第一驱动装置和第二驱动装置，第一驱动装置设置于镜筒和第一壳体之间且第二驱动装置设置于第一壳体和第二壳体之间；第一驱动装置用于实现镜筒在光轴所在平面内的移动或转动，第二驱动装置用于实现镜筒在垂直于光轴所在平面内的移动或转动；第二驱动装置包括压电变形部以及将压电变形部支撑固定于第一壳体和第二壳体之间的连接件，压电变形部包括相对设置的第一端和第二端，连接件包括第一支架和第二支架，第一支架的两端分别固定于第一壳体和第一端；第二支架的两端分别固定于第二端和第二壳体。

Description

镜头驱动装置和电子设备 技术领域
本实用新型涉及镜头技术领域，尤其涉及一种镜头驱动装置和电子设备。
 技术问题
现有的镜头驱动装置，结构复杂，仅能驱动镜头实现垂直光轴方向的转动，转动方向不够全面，难以实现良好的防抖功能。
因此亟需一种防抖功能良好的镜头驱动装置。
 技术解决方案
本发明的目的在于提供一种能够改善带外抑制宽度过窄问题的镜头驱动装置。
本发明的技术方案如下：
本发明提供一种镜头驱动装置，其特征在于，所述镜头驱动装置包括：
镜筒，所述镜筒用于安装镜头；
第一壳体，所述镜筒安装在所述第一壳体内，所述镜筒可相对所述第一壳体移动或转动；
第二壳体，所述第一壳体安装在所述第二壳体内，所述第一壳体可相对所述第二壳体移动或转动；
第一驱动装置和第二驱动装置，所述第一驱动装置设置于所述镜筒和所述第一壳体之间且所述第二驱动装置设置于所述第一壳体和所述第二壳体之间；所述第一驱动装置用于实现所述镜筒在光轴所在平面内的移动或转动，所述第二驱动装置用于实现所述镜筒在垂直于光轴所在平面内的移动或转动；
所述第二驱动装置包括压电变形部以及将所述压电变形部支撑固定于所述第一壳体和所述第二壳体之间的连接件，所述压电变形部包括相对设置的第一端和第二端，所述连接件包括第一支架和第二支架，所述第一支架一端固定于所述第一壳体，另一端固定于所述第一端；所述第二支架一端固定于所述第二端，另一端固定于所述第二壳体。
作为一种改进方式，所述压电变形部包括至少两个叠设的压电层，使得所述压电变形部产生垂直于光轴的驱动力，且所述驱动力的作用方向不经过所述第一壳体的几何中心。
作为一种改进方式，所述压电变形部还包括夹设于所述至少两个叠设的压电层之间的弹性片，所述第一端和第二端为所述弹性片相对设置的两端。
作为一种改进方式，所述第一壳体设置为具有第一容置空间的四棱柱，包括第一底板、从所述第一底板上延伸的四个第一侧板和与四个所述第一侧板连接的第一盖板，所述第一底板、所述第一侧板和所述第一盖板围设成第一容置空间，所述第一盖板上开设有贯穿所述第一盖板的第一通光孔，所述镜筒位于所述第一容置空间内；
所述第二壳体设置为具有第二容置空间的四棱柱，包括第二底板、从所述第二底板上延伸的四个第二侧板和与四个所述第二侧板连接的第二盖板，所述第二底板、所述第二侧板和所述第二盖板围设成第二容置空间，所述第二盖板上开设有贯穿所述第二盖板的第二通光孔，所述第一壳体位于所述第二容置空间内，所述第一通光孔和所述第二通光孔对应，所述光轴所在的直线分别穿过所述第一通光孔和所述第二通光孔；所述第二驱动装置包括四个，等间距的分别位于四个所述第一侧板靠近棱边的位置，每个所述第二驱动装置的压电变形部的第一端分别通过一个所述第一支架和一个所述第一侧板连接，每个所述第二驱动装置的压电变形部的第二端通过一个所述第二支架和一个所述第二侧板连接。
作为一种改进方式，所述第一支架与所述第一壳体一体成型，和/或所述第二支架与所述第二壳体一体成型。
作为一种改进方式，所述第一驱动装置包括正对设置的第一磁钢组件和第一线圈组件，所述第一磁钢组件和所述第一线圈组件中的其一固定于所述第一壳体，另一固定于所述镜筒。
作为一种改进方式，所述镜头驱动装置还包括第一支点组件，所述第一支点组件位于所述第二容置空间内，所述第一支点组件分别与所述第一底板、第二底板连接，所述第一支点组件用于支撑所述第一壳体，并能使所述第一壳体相对所述第二壳体转动。
作为一种改进方式，所述第一支点组件包括第一球体和第一滚槽，所述第一球体设置于所述第一底板，所述第一滚槽设置于所述第二底板，第一球体部分位于所述第一滚槽内，所述第一球体可相对所述第一滚槽转动。
作为一种改进方式，所述镜头驱动装置还包括第一弹性组件，所述第一弹性组件位于所述第二容置空间内，所述第一弹性组件分别与所述第一侧板、所述第二侧板连接。
本实用新型还提供一种电子设备，所述电子设备包括上述的镜头驱动装置。
 有益效果
本发明实施方式相对于现有技术而言，第一驱动装置能实现镜筒在光轴所在平面内的移动或转动，第二驱动装置实现了驱动第一壳体和第一壳体内的镜筒在垂直于光轴所在平面内的移动或转动，从而使镜筒内的镜头具备了滚动、俯仰和偏摆等多方向的防抖，且滚动独立于俯仰偏摆，滚动的同时，不影响俯仰和偏摆，防抖效果好，且压电变形部的连接方式较佳，易于实现。
 附图说明
图1为本实用新型实施例提供的镜头驱动装置的立体结构示意图；
图2为本实用新型实施例提供的镜头驱动装置的爆炸结构示意图；
图3为本实用新型实施例提供的镜头驱动装置的又一爆炸结构示意图；
图4为本实用新型实施例提供的第一壳体的爆炸结构示意图；
图5为本实用新型实施例提供的第二壳体的爆炸结构示意图；
图6A为本实用新型实施例提供的镜头驱动装置的又一爆炸结构的俯视示意图；
图6B为本实用新型实施例提供的镜头驱动装置的又一爆炸结构示意图；
图7A是图6中A处的放大结构示意图；
图7B是图6中的第二驱动装置在电压作用下形状改变的第一结构意图；
图7C是图6中的第二驱动装置在电压作用下形状改变的第二结构意图；
图8为本实用新型第二壳体、第一驱动装置和第一弹性组件的俯视结构示意图；
图9为本实用新型又一实施例提供的镜头驱动装置的爆炸结构示意图；
图10A是图9中B处的放大结构示意图；
图10B是图9中的第二驱动装置在电压作用下形状改变的第一结构意图；
图10C是图9中的第二驱动装置在电压作用下形状改变的第二结构意图；
图11为本实用新型实施例提供的镜头驱动装置的又一爆炸结构示意图；
图12为本实用新型实施例提供的第一弹性组件的立体结构示意图；
图13为本实用新型实施例提供的镜头驱动装置的又一爆炸结构示意图；
图14为本实用新型实施例提供的镜头驱动装置的局部结构的主视示意图；
图15为本实用新型实施例提供的镜头驱动装置的局部结构的左视示意图；
图16为本实用新型实施例提供的第二弹性组件的立体结构示意图。
 本发明的实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产 品或设备固有的其它步骤或单元。
需要说明的是，在本发明中涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
 
请一并参照图1、图2和图3，本实用新型提供一种镜头驱动装置10，镜头驱动装置10用于驱动镜头移动或转动。镜头驱动装置10包括镜筒11、第一壳体12、第二壳体13、第一驱动装置14、第二驱动装置15、第一支点组件16、第二支点组件17、第一弹性组件18和第二弹性组件19。镜筒11用于安装镜头，镜筒11悬置在所述第一壳体12内，镜筒11可相对所述第一壳体12移动或转动；第一壳体12安装在所述第二壳体13内，第一壳体12可相对第二壳体13移动或转动；第一支点组件16位于第二壳体13内，第一支点组件16分别和第一壳体12、第二壳体13连接，第一壳体12通过第一支点组件16与第二壳体13可转动连接；第一弹性组件18位于第二壳体13内，第一弹性组件18分别与第一壳体12、第二壳体13连接；第二支点组件17位于第一壳体12内，第二支点组件17分别和第一壳体12、镜筒11连接，第一壳体12通过第二支点组件17与镜筒11可转动连接；第二弹性组件19位于第一壳体12内，第二弹性组件19分别与第一壳体12、镜筒11连接，第一驱动装置14设置于镜筒11和第一壳体12之间且第二驱动装置15设置于所述第一壳体12和第二壳体13之间，或者，第一驱动装置14设置于第一壳体12和第二壳体13之间且第二驱动装置15设置于镜筒11和第一壳体12之间；其中，第一驱动装置14用于实现镜筒11在镜筒11的光轴所在平面内的移动或转动，第二驱动装置15用于实现镜筒11在垂直于光轴所在平面内的移动或转动。其中，本实施例中，以第一驱动装置14设置于镜筒11和第一壳体12之间且第二驱动装置15设置于所述第一壳体12和第二壳体13之间进行说明。
镜筒11的形状和镜头的形状相匹配。镜筒11的材质不做限定，如可以为塑料。
请参阅图4，第一壳体12设置为具有第一容置空间的四棱柱，第一壳体12包括第一底板121、从第一底板121上延伸的四个第一侧板122和与四个第一侧板122连接的第一盖板123，第一底板121、第一侧板122和第一盖板123围设成第一容置空间，所述镜筒11和镜头位于所述第一容置空间内。可以理解，镜头的一部分也可以位于第一容置空间外。
第一盖板123上开设有贯穿第一盖板123并和所述第一容置空间连通的第一通光孔1231，从而镜筒11上安装的镜头能通过第一通光孔1231拍照或者摄像。其中，第一盖板123和第一底板121平行。
请参阅图5，第二壳体13设置为具有第二容置空间的四棱柱，第二壳体13包括第二底板131、从第二底板131上延伸的第二侧板132和与第二侧板132连接的第二盖板133，第二底板131、第二侧板132和第二盖板133围设成第二容置空间，第一壳体12位于第二壳体13的第二容置空间内。
可以理解，第二侧板132和第一侧板122上可以开设让位孔，以使导线穿过第一侧板122和第二侧板132，以分别给第一驱动装置14、第二驱动装置15等供电。
第二盖板133上开设有贯穿第二盖板133并和所述第二容置空间连通的第二通光孔1331，镜头的光轴所在的直线分别穿过所述第一通光孔1231和所述第二通光孔1331，镜筒11上安装的镜头能通过第一通光孔1231和第二通光孔1331拍照或者摄像。
请一并参阅图6A至图7C，第二驱动装置15包括四个，第二驱动装置15等间距的分别位于四个第一侧板122靠近棱边的位置。每个第二驱动装置15包括压电变形部151以及将压电变形部151支撑固定于第一壳体12和第二壳体13之间的连接件152。可以理解，在第二驱动装置15设置于镜筒11和第一壳体12之间时，连接件152用于将压电变形部151支撑固定于镜筒11和第一壳体12之间。本实施例中，以连接件152用于将压电变形部151支撑固定于第一壳体12和第二壳体13之间进行说明。其中，四个第二驱动装置15中每一个分别与一个第一壳体12、第二壳体13连接。
连接件152包括第一支架1521和第二支架1522，第一支架1521一端固定于第一壳体12的第一侧板122或第二壳体13的第二侧板132的其中一个，第一支架1521另一端固定于所述压电变形部151的中间位置，第二支架1522设置为两个，第二支架1522一端固定于所述压电变形部151的以所述中间位置为对称中心的两端，第二支架1522另一端固定于第一壳体12的第一侧板122或第二壳体13的第二侧板132的其中另一个。具体地，所述压电变形部151的两端可以解释为：一般的压电变形部在电场作用下可变长或变短，所述两端为压电变形部沿其变长或变短方向上的两端。本实施例中，以第一支架1521固定于第一壳体12的第一侧板12、第二支架1522固定于第二壳体13的第二侧板132进行说明，即每个所述第二驱动装置15的压电变形部151的中间位置分别通过一个第一支架1521和一个第一侧板122连接，每个第二驱动装置15的压电变形部151的以所述中间位置为对称中心的两端分别通过一个第二支架1522和一个第二侧板132连接。第一支架1521与第一壳体12一体成型，和/或所述第二支架1522与第二壳体13一体成型。可以理解，在第一支架1521固定于第二壳体13的第二侧板132、第二支架1522固定于第一壳体12的第一侧板12时，第一支架1521与第二壳体13一体成型，和/或所述第二支架1522与第一壳体12一体成型。
第一支架1521的数量、第二支架1522的数量和压电变形部151的数量一致。压电变形部151的中部通过一个第一支架1521与第一壳体12的第一侧板122连接，压电变形部151的两端通过一个第二支架1522与第二壳体13的第二侧板132连接。其中，第二支架1522包括两个第二分支架，压电变形部151的两端分别通过一个第二分支架与第二壳体13的第二侧板132连接。
在本申请中，第一支架1521包括4个，每个第一支架1521和一个第一侧板122连接，每个第二支架1522和一个第二侧板132连接。
压电变形部151具有压电效应：当在压电变形部151的极化方向上施加电场，压电变形部151会发生变形，电场去掉后，压电变形部151的变形随之消失。因此，在压电变形部151被施加电压后，第二驱动装置15发生形变，从而驱动第一壳体12和第一壳体12内的装置，如镜筒11在垂直于光轴所在平面内的移动或转动。
请一并参阅图6A、图6B、图7A、图7B、图7C和图8，压电变形部151包括四个，压电变形部151的数量和第一支架1521的数量一致。
每个压电变形部151包括至少两个叠设的压电层，使得所述压电变形部151产生垂直于光轴的驱动力，且驱动力的作用方向不经过所述第一壳体的几何中心。如压电变形部151包括依次层叠设置的第一压电层1511和第二压电层1513。第一压电层1511的中部与第一支架1521连接，第一压电层1511和第二压电层1513中至少之一的以所述中间位置为对称中心的的两端与第二支架1522连接。同样地，所述压电层的两端可以解释为：压电层沿其变长或变短方向上的两端。其中，每个压电变形部151偏离第一侧板122的中心，以使得压电变形部151的驱动力的作用方向不经过第一壳体12的几何中心。
作为一种实施方式，压电变形部151还包括夹设于所述至少两个叠设的压电层之间的弹性片1512，第二支架1522一端固定于弹性片1512的以所述中间位置为对称中心的的两端，另一端固定于第二壳体12。具体地，所述弹性片的两端与所述压电层的两端方向一致，可以解释为：弹性片沿压电层变长或变短方向上的两端。即压电变形部151包括依次层叠设置的第一压电层1511、弹性片1512和第二压电层1513。第一压电层1511和第二压电层1513在沿垂直所述光轴方向的投影落入所述弹性片1512上，第一压电层1511的中部与第一支架1521连接，弹性片1512以所述中间位置为对称中心的的两端与第二支架1522连接。
第一压电层1511在外部电压作用下发生变形。第二压电层1513在外部电压作用下也会发生变形。
弹性片1512的材质不做限定，在本申请中，弹性片1512为钢片，弹性片在第一压电层1511和第二压电层1512变形下被动随之变形，弹性片的设置有利于将压电变形部151的变形量放大，更多的转换为推动第一壳体转动的转矩力。
请继续参阅图7B、图7C和图8，在第一压电层1511和第二压电层1513受到外部电压作用下第一压电层1511缩短、第二压电层1513伸长，或第一压电层1511伸长、第二压电层1513缩短，以使压电变形部151同时内凹或者外凸，弹性片1512随着第一压电层1511和第二压电层1513变形而内凹或者外凸，以驱动第一壳体12和其中的镜筒11在垂直于光轴所在平面内的移动或转动。可以理解，也可以不设置弹性片1512。
请一并参阅图9、图10A、10B、图10C，可以理解，在其他实施方式中，压电变形部151也可以以其他方式与第一壳体12、第二壳体13连接。具体的，压电变形部151包括相对设置的第一端1514和第二端1515，第一支架1521一端固定于第一壳体12的第一侧板122，第一支架1521另一端固定于第一端1514；此处，所述第一端1514和第二端1515即为压电变形部151沿其变长或变短方向上的两端。第二支架1522一端固定于第二端1515，第二支架1522另一端固定于所述第二壳体13的第二侧板132。在该实施例中，压电变形部151的数量、第一支架1521的数量和第二支架1522的数量一致。
每个压电变形部151包括至少两个叠设的压电层，使得所述压电变形部151产生垂直于光轴的驱动力，且驱动力的作用方向不经过所述第一壳体的几何中心。如压电变形部151包括依次层叠设置的第一压电层1511和第二压电层1513。
作为一种实施方式，压电变形部151还包括夹设于所述至少两个叠设的压电层之间的弹性片1512，第一端和第二端为所述弹性片1512沿压电层变长或变短方向上的两端。即压电变形部151包括依次层叠设置的第一压电层1511、弹性片1512和第二压电层1513。第一压电层1511和第二压电层1513在沿垂直所述光轴方向的投影落入所述弹性片1512上。第一支架1521一端固定于第一壳体12的第一侧板122，第一支架1521另一端固定于第一端；第二支架1522一端固定于第二端，第二支架1522另一端固定于所述第二壳体13的第二侧板132。第一支架1521、压电变形部151和所述第二支架1522呈Z字形，形成悬臂梁结构，该种悬臂梁结构的驱动装置在同等变形量的情况下能产生更大的转矩力，使得镜头的防抖系统更加灵敏。其中，第一支架1521和第二支架1522分别位于压电变形部151的两侧。
请继续参阅图10B、图10C，在第一压电层1511和第二压电层1513受到外部电压作用下，第一压电层1511缩短、第二压电层1513伸长，或第一压电层1511伸长、第二压电层1513缩短，以使压电变形部151同时内凹或者外凸，弹性片1512随着第一压电层1511和第二压电层1513变形而内凹或者外凸，以驱动第一壳体12和其中的镜筒11在垂直于光轴所在平面内的移动或转动。
请参阅图11，第一支点组件16位于第二容置空间内，所述第一支点组件16分别与所述第一底板121、第二底板131连接，第一支点组件16用于支撑所述第一壳体12，并能使所述第一壳体12相对所述第二壳体13转动。具体的，第一支点组件16包括第一球体组件161和第一滚槽162，第一球体组件161和所述第一滚槽162两者中一个设置于第一底板121，第一球体组件161和所述第一滚槽162中另一个设置于第二底板131，第一球体组件161可相对第一滚槽162转动。
第一球体组件161包括第一底座1611和与第一底座1611连接的第一球体1612。第一底座1611和第一底板121或第二底板131连接。在本申请中，第一球体1612设置于第一底板121。
第一滚槽162为一凹槽，第一球体1612部分位于第一滚槽162内，第一球体1612可相对所述第一滚槽162转动。在本申请中，第一滚槽162设置于第二底板131。可以理解，第二底板131上可以设置凸台，第一滚槽162开设在第二底板131的凸台上。
请参阅图12，第一弹性组件18位于第二容置空间内，所述第一弹性组件18分别与所述第一侧板122、所述第二侧板132连接。第一弹性组件18用于支撑第一壳体12。具体的，第一弹性组件18包括第一框体181、第二框体182和多个第一弹性件183，第一框体181与第一侧板122连接，第二框体182与所述第二侧板132连接，所述第一弹性件183的两端分别与第一框体181、第二框体182连接，所述第一弹性件183相对所述第一框体181、所述第二框体182倾斜。
第一框体181为框体形，第一框体181和第一侧板122的外壁围设的形状相匹配，第一框体181和第一侧板122的外壁贴合，第一框体181和第一侧板122能更好的固定。
第二侧板132为框体形，第二框体182和第二侧板132的内壁围设的形状相匹配，第二框体182和第二侧板132的内壁贴合，第二框体182能和第二侧板132更好的固定。
第一弹性件183大致呈长条形。第一弹性件183具有弹性。第一弹性件183和第二框体182之间的夹角a小于90度。在本申请中，第一弹性件183包括四个，每个第一弹性件183和一个第一侧板122对应。
请一并参阅图13、图14和图15，第一驱动装置14的具体类型不做限定，如第一驱动装置14为压电驱动装置或电磁驱动装置等。本实施例中，第一驱动装置14用于实现所述镜筒11在光轴所在平面内的移动或转动，并以第一驱动装置14为电磁驱动装置进行说明。
电磁驱动装置包括多个。优选地，电磁驱动装置以沿垂直所述光轴的方向分布。可以理解，电磁驱动装置也可以不均匀分布，能驱动镜筒11在光轴所在平面内的移动或转动即可。第一驱动装置14包括正对设置的第一线圈组件141和第一磁钢组件142，第一磁钢组件142和所述第一线圈组件141中的其一固定于所述第一壳体12，另一固定于所述镜筒11。第一线圈组件141通电时能产生磁场，以推动第一磁钢组件142移动，进一步在光轴所在平面内的移动或转动。
第二支点组件17位于第一容置空间内，所述第二支点组件17分别与所述第一底板121、镜筒11连接，第二支点组件17用于支撑所述镜筒11，并能使所述镜筒11相对所述第一壳体12转动。第二支点组件17可以和第一支点组件16的结构一致。具体的，第二支点组件17包括第二球体组件171和第二滚槽172，第二球体组件171和所述第二滚槽172两者中一个设置于第一底板121，第二球体组件171和所述第二滚槽172中另一个设置于镜筒11，第二球体组件171可相对第二滚槽172转动。
第二球体组件171包括第二底座1711和与第二底座1711连接的第二球体1712。第二底座1711和第一底板121或镜筒11连接。在本申请中，第二球体1712设置于镜筒11。
第二滚槽172为一凹槽，第二球体1712部分位于第二滚槽172内，第二球体1712可相对第二滚槽172转动。在本申请中，第二滚槽172设置于第一底板121。可以理解，第一底板121上可以设置凸台，第二滚槽172开设在第一底板121的凸台上。
请参阅图16，第二弹性组件19位于第一容置空间内，所述第二弹性组件19分别与所述第一侧板122、所述镜筒11连接。第二弹性组件19用于支撑镜筒11。第二弹性组件19和第一弹性组件18的结构一致。具体的，第二弹性组件19包括第三框体191、第四框体192和多个第二弹性件193，第三框体191与镜筒11连接，第四框体192与所述第一侧板122连接，所述第二弹性件193的两端分别与第三框体191、第四框体192连接，所述第二弹性件193相对所述第二框体182、所述第二框体182倾斜。
第三框体191为框体形，第三框体191和镜筒11的外表面的截面的形状相匹配，第三框体191和镜筒11的外壁贴合，第三框体191和镜筒11能更好的固定。
第四侧板为框体形，第四框体192和第一侧板122的内壁围设的形状相匹配，第二框体182和第一侧板122的内壁贴合，第四框体192能和第一侧板122更好的固定。
第二弹性件193大致呈长条形。第二弹性件193具有弹性。
本实用新型还提供一种电子设备，电子设备包括上述的镜头驱动装置10。电子设备的类型不做限定，电子设备可以是智能终端，如手机，平板，电子设备还可以是照相机等包括镜头的设备。
本实用新型实施方式相对于现有技术而言，第一驱动装置能实现镜筒在光轴所在平面内的移动或转动，第二驱动装置实现了驱动第一壳体和第一壳体内的镜筒在垂直于光轴所在平面内的移动或转动，从而使镜筒内的镜头具备了滚动、俯仰和偏摆等多方向的防抖，且滚动独立于俯仰偏摆，滚动的同时，不影响俯仰和偏摆，防抖效果好，且压电变形部的连接方式较佳，易于实现。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (10)

  1. 一种镜头驱动装置，其特征在于，所述镜头驱动装置包括：
    镜筒，所述镜筒用于安装镜头；
    第一壳体，所述镜筒安装在所述第一壳体内，所述镜筒可相对所述第一壳体移动或转动；
    第二壳体，所述第一壳体安装在所述第二壳体内，所述第一壳体可相对所述第二壳体移动或转动；
    第一驱动装置和第二驱动装置，所述第一驱动装置设置于所述镜筒和所述第一壳体之间且所述第二驱动装置设置于所述第一壳体和所述第二壳体之间；所述第一驱动装置用于实现所述镜筒在光轴所在平面内的移动或转动，所述第二驱动装置用于实现所述镜筒在垂直于光轴所在平面内的移动或转动；
    所述第二驱动装置包括压电变形部以及将所述压电变形部支撑固定于所述第一壳体和所述第二壳体之间的连接件，所述压电变形部包括相对设置的第一端和第二端，所述连接件包括第一支架和第二支架，所述第一支架一端固定于所述第一壳体，另一端固定于所述第一端；所述第二支架一端固定于所述第二端，另一端固定于所述第二壳体。
  2. 根据权利要求1所述的镜头驱动装置，其特征在于：所述压电变形部包括至少两个叠设的压电层，使得所述压电变形部产生垂直于光轴的驱动力，且所述驱动力的作用方向不经过所述第一壳体的几何中心。
  3. 根据权利要求2所述的镜头驱动装置，其特征在于：所述压电变形部还包括夹设于所述至少两个叠设的压电层之间的弹性片，所述第一端和第二端为所述弹性片相对设置的两端。
  4. 根据权利要求2所述的镜头驱动装置，其特征在于：所述第一壳体设置为具有第一容置空间的四棱柱，包括第一底板、从所述第一底板上延伸的四个第一侧板和与四个所述第一侧板连接的第一盖板，所述第一底板、所述第一侧板和所述第一盖板围设成第一容置空间，所述第一盖板上开设有贯穿所述第一盖板的第一通光孔，所述镜筒位于所述第一容置空间内；
    所述第二壳体设置为具有第二容置空间的四棱柱，包括第二底板、从所述第二底板上延伸的四个第二侧板和与四个所述第二侧板连接的第二盖板，所述第二底板、所述第二侧板和所述第二盖板围设成第二容置空间，所述第二盖板上开设有贯穿所述第二盖板的第二通光孔，所述第一壳体位于所述第二容置空间内，所述第一通光孔和所述第二通光孔对应，所述光轴所在的直线分别穿过所述第一通光孔和所述第二通光孔；所述第二驱动装置包括四个，等间距的分别位于四个所述第一侧板靠近棱边的位置，每个所述第二驱动装置的压电变形部的第一端分别通过一个所述第一支架和一个所述第一侧板连接，每个所述第二驱动装置的压电变形部的第二端通过一个所述第二支架和一个所述第二侧板连接。
  5. 根据权利要求1所述的镜头驱动装置，其特征在于：所述第一支架与所述第一壳体一体成型，和/或所述第二支架与所述第二壳体一体成型。
  6. 根据权利要求1所述的镜头驱动装置，其特征在于：所述第一驱动装置包括正对设置的第一磁钢组件和第一线圈组件，所述第一磁钢组件和所述第一线圈组件中的其一固定于所述第一壳体，另一固定于所述镜筒。
  7. 根据权利要求4所述的镜头驱动装置，其特征在于：所述镜头驱动装置还包括第一支点组件，所述第一支点组件位于所述第二容置空间内，所述第一支点组件分别与所述第一底板、第二底板连接，所述第一支点组件用于支撑所述第一壳体，并能使所述第一壳体相对所述第二壳体转动。
  8. 根据权利要求7所述的镜头驱动装置，其特征在于：所述第一支点组件包括第一球体和第一滚槽，所述第一球体设置于所述第一底板，所述第一滚槽设置于所述第二底板，第一球体部分位于所述第一滚槽内，所述第一球体可相对所述第一滚槽转动。
  9. 根据权利要求4所述的镜头驱动装置，其特征在于：所述镜头驱动装置还包括第一弹性组件，所述第一弹性组件位于所述第二容置空间内，所述第一弹性组件分别与所述第一侧板、所述第二侧板连接。
  10. 一种电子设备，其特征在于：所述电子设备包括权利要求1~9任一项所述的镜头驱动装置。
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