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CN-119233052-B - Actuator, camera module and electronic equipment

CN119233052BCN 119233052 BCN119233052 BCN 119233052BCN-119233052-B

Abstract

The application provides an actuator, a camera module and electronic equipment, and belongs to the technical field of electronics. The actuator comprises a base piece, a first support piece and at least two driving components, wherein the first support piece is movably arranged above the base piece and can move relative to the base piece along a first direction and a second direction respectively, the driving components are used for driving the first support piece to move along the first direction and the second direction respectively, each driving component comprises a main driving module, at least one driving component further comprises a compensation driving module, the driving direction of the main driving module in the same driving component is one of the first direction and the second direction, and the driving direction of the compensation driving module is the other one of the first direction and the second direction. The actuator of the application avoids the problem of insufficient driving force caused by the reduction of the number of magnets.

Inventors

  • LIU XINJIE

Assignees

  • 北京小米移动软件有限公司

Dates

Publication Date
20260508
Application Date
20230629

Claims (13)

  1. 1. An actuator, characterized in that the actuator comprises a base member (1), a first bracket member (2) and at least two drive assemblies (3); the first support piece (2) is movably arranged above the base piece (1), the first support piece (2) can move relative to the base piece (1) along a first direction and a second direction respectively, and the first direction and the second direction form a preset angle alpha, wherein 0< alpha <180 degrees; At least one driving assembly (3) is respectively arranged on one side of the actuator along the first direction and one side of the actuator along the second direction, so that the at least two driving assemblies (3) are respectively used for driving the first bracket piece (2) to move along the first direction and the second direction; Each of the drive assemblies (3) comprises a main drive module, and at least one of the drive assemblies (3) further comprises a compensation drive module; the driving direction of the main driving module in the same driving assembly (3) is one of the first direction and the second direction, and the driving direction of the compensation driving module is the other one of the first direction and the second direction.
  2. 2. The actuator according to claim 1, wherein the main drive module comprises a main magnet member (301) and a main control coil (302) coupled to a magnetic field, the main magnet member (301) being located on one of the base member (1) and the first bracket member (2), the main control coil (302) being located on the other of the base member (1) and the first bracket member (2); The compensation driving module comprises a compensation magnet piece (303) and a compensation control coil (304) which are coupled with each other in a magnetic field, wherein the compensation magnet piece (303) is positioned on one of the base piece (1) and the first bracket piece (2), and the compensation control coil (304) is positioned on the other of the base piece (1) and the first bracket piece (2); The magnetic poles of the main magnet piece (301) are arranged in one of the first direction and the second direction, and the magnetic poles of the compensation magnet piece (303) are arranged in the other of the first direction and the second direction.
  3. 3. Actuator according to claim 2, wherein the drive assembly (3) comprises a first drive assembly (31), a second drive assembly (32) and a third drive assembly (33); At least one of the second drive assembly (32) and the third drive assembly (33) includes the compensation magnet member (303) and the compensation control coil (304); The first driving assembly (31) is used for driving the first bracket piece (2) to move along the first direction, and the second driving assembly (32) and the third driving assembly (33) are used for driving the first bracket piece (2) to move along the second direction.
  4. 4. An actuator according to claim 3, wherein the main magnet member (301) and the main control coil (302) of the first drive assembly (31) are located on one side of the base member (1) or the first bracket member (2), respectively, in the first direction; the main magnet piece (301) and the main control coil (302) of the second driving assembly (32) are respectively positioned at one side of the base piece (1) or the first bracket piece (2) along the second direction; The main magnet member (301) and the main control coil (302) of the third driving assembly (33) are respectively located at the other side of the base member (1) or the first bracket member (2) in the second direction.
  5. 5. An actuator according to claim 3, wherein the first drive assembly (31) comprises a first main magnet piece (311), the poles of the first main magnet piece (311) being arranged in the first direction; The second driving assembly (32) comprises a second main magnet piece (321) and a first compensation magnet piece (323), wherein magnetic poles of the second main magnet piece (321) are arranged along the second direction, and magnetic poles of the first compensation magnet piece (323) are arranged along the first direction; the third driving assembly (33) comprises a third main magnet piece (331) and a second compensation magnet piece (333), wherein magnetic poles of the third main magnet piece (331) are arranged along the second direction, and magnetic poles of the second compensation magnet piece (333) are arranged along the first direction.
  6. 6. The actuator according to claim 5, wherein the second main magnet piece (321) and the first bucking magnet piece (323) are arranged at intervals along the first direction; and/or the number of the groups of groups, The third main magnet piece (331) and the second bucking magnet piece (333) are arranged at intervals along the first direction.
  7. 7. The actuator according to claim 6, wherein the first compensation magnet piece (323) is located on a side of the second main magnet piece (321) close to the first main magnet piece (311); and/or the number of the groups of groups, The second compensation magnet piece (333) is located at one side of the third main magnet piece (331) close to the first main magnet piece (311).
  8. 8. The actuator of claim 5, wherein the first drive assembly (31) further comprises a first main control coil (312), the second drive assembly (32) further comprises a second main control coil (322) and a first compensation control coil (324), and the third drive assembly (33) further comprises a third main control coil (332) and a second compensation control coil (334); the first main magnet piece (311) is positioned at one side of the first bracket piece (2) along the first direction, and the first main control coil (312) is positioned at one side of the base piece (1) along the first direction; The second main magnet piece (321) and the first compensation magnet piece (323) are positioned at one side of the first bracket piece (2) along the second direction, and the second main control coil (322) and the first compensation control coil (324) are positioned at one side of the base piece (1) along the second direction; the third main magnet piece (331) and the second compensation magnet piece (333) are located at the other side of the first support piece (2) along the second direction, and the third main control coil (332) and the second compensation control coil (334) are located at the other side of the base piece (1) along the second direction.
  9. 9. The actuator of claim 8, wherein the orthographic projection of the first compensation control coil (324) along the second direction and the orthographic projection of the second compensation control coil (334) along the second direction are at least partially staggered; Or, The orthographic projection of the first compensation magnet piece (323) along the second direction and the orthographic projection of the second compensation magnet piece (333) along the second direction are at least partially staggered.
  10. 10. The actuator according to any one of claims 2 to 9, further comprising a second support member (4), the second support member (4) being located inside the first support member (2), the second support member (4) being provided with a support coil (41), the support coil (41) being magnetically couplable with at least one of the main magnet member (301), the main control coil (302), the bucking magnet member (303) and the bucking control coil (304) to drive the second support member (4) to move in a third direction relative to the first support member (2), the third direction being perpendicular to a plane in which the first direction and the second direction lie.
  11. 11. The actuator according to claim 10, further comprising at least one first elastic member (5), said at least one first elastic member (5) being connected between said first bracket member (2) and said base member (1), said at least one first elastic member (5) being adapted to movably support said first bracket member (2) above said base member (1); and/or the number of the groups of groups, The actuator further comprises at least one second elastic member (6), wherein the at least one second elastic member (6) is connected between the second support member (4) and the first support member (2), and the at least one second elastic member (6) is used for movably supporting the second support member (4) inside the first support member (2).
  12. 12. The utility model provides a camera module, its characterized in that, the camera module includes: An optical lens (7); the photosensitive assembly comprises a circuit board and a photosensitive element, the photosensitive element is electrically connected with the circuit board, the optical lens (7) is positioned on the photosensitive path of the photosensitive element; And an actuator according to any one of claims 1 to 11, wherein the optical lens (7) is connected to the first mount member (2) and the photosensitive assembly is connected to the base member (1).
  13. 13. An electronic device comprising the actuator of any one of claims 1 to 11 or the camera module of claim 12.

Description

Actuator, camera module and electronic equipment Technical Field The present application relates to the field of electronic technologies, and in particular, to an actuator, a camera module, and an electronic device. Background With the advancement of technology, an actuator (or motor) for driving a lens to achieve rapid and stable focusing and shake correction (Optical Image Stabilization, optical anti-shake stabilization) is arranged inside a camera in a mobile phone. The actuators in the related art are four-side magnets, magnetic fields generated between the magnets can generate mutual interference, and magnetic field interference exists between adjacent cameras under a multi-camera scene. In order to solve this problem, optimization is generally performed by reducing the number of magnets, but this may result in insufficient driving force in a part of directions, which affects the performance of the actuator. Disclosure of Invention The application provides an actuator, a camera module and electronic equipment, which can solve the problem of insufficient driving force of the actuator part caused by the reduction of the number of magnets. The technical scheme is as follows: in one aspect, an actuator is provided that includes a base member, a first bracket member, and at least two drive assemblies; the first support piece is movably arranged above the base piece, and can move relative to the base piece along a first direction and a second direction respectively, wherein the first direction and the second direction form a preset angle alpha, and 0< alpha <180 degrees; The at least two driving components are respectively used for driving the first bracket piece to move along the first direction and the second direction; Each of the drive assemblies includes a main drive module, and at least one of the drive assemblies further includes a compensation drive module; the driving direction of the main driving module in the same driving assembly is one of the first direction and the second direction, and the driving direction of the compensation driving module is the other one of the first direction and the second direction. In some embodiments, the main drive module includes a main magnet piece and a main control coil, the main magnet piece being located on one of the base piece and the first bracket piece, the main control coil being located on the other of the base piece and the first bracket piece; The compensation driving module comprises a compensation magnet piece and a compensation control coil, wherein the compensation magnet piece and the compensation control coil are coupled in a magnetic field, the compensation magnet piece is positioned on one of the base piece and the first bracket piece, and the compensation control coil is positioned on the other of the base piece and the first bracket piece; the poles of the main magnet piece are arranged in one of the first direction and the second direction, and the poles of the compensation magnet piece are arranged in the other of the first direction and the second direction. In some embodiments, the drive assembly includes a first drive assembly, a second drive assembly, and a third drive assembly; at least one of the second driving assembly and the third driving assembly comprises the compensation magnet piece and the compensation control coil; The first driving assembly is used for driving the first support piece to move along the first direction, and the second driving assembly and the third driving assembly are used for driving the first support piece to move along the second direction. In some embodiments, the main magnet member and the main control coil of the first driving assembly are located on one side of the base member or the first bracket member, respectively, in the first direction; The main magnet piece and the main control coil of the second driving assembly are respectively positioned at one side of the base piece or the first bracket piece along the second direction, and the main magnet piece and the main control coil of the third driving assembly are respectively positioned at the other side of the base piece or the first bracket piece along the second direction. In some embodiments, the first drive assembly includes a first main magnet piece having poles arranged along the first direction; the second driving assembly comprises a second main magnet piece and a first compensation magnet piece, wherein magnetic poles of the second main magnet piece are arranged along the second direction, and magnetic poles of the first compensation magnet piece are arranged along the first direction; The third driving assembly comprises a third main magnet piece and a second compensation magnet piece, wherein magnetic poles of the third main magnet piece are arranged along the second direction, and magnetic poles of the second compensation magnet piece are arranged along the first direction. In some embodiments, the second main magnet piece and the first b