CN111182194A

CN111182194A - Triaxial anti-shake voice coil motor structure

Info

Publication number: CN111182194A
Application number: CN202010176272.2A
Authority: CN
Inventors: 沈文振; 吴承諹; 陈周聪; 上官光贤; 黄芳
Original assignee: Xiamen Xinhongzhou Precision Technology Co ltd
Current assignee: Xiamen Xinhongzhou Precision Technology Co ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-05-19

Abstract

The invention discloses a three-axis anti-shake voice coil motor structure which comprises a shell, a base, a lens bracket, a three-axis movement driver and an anti-shake reset mechanism, wherein the base is arranged on the shell; an accommodating space with an upper opening and a lower opening is formed between the shell and the base; the lens support is movably matched in the accommodating space, and the three-axis moving driver drives the lens support to move along the front-back direction, the left-right direction and the up-down direction; the anti-shake reset mechanism comprises a first elastic arm which is arranged in a bending mode, and the first elastic arm deforms along with the front-back left-right movement of the lens support. According to the invention, the anti-shake reset mechanism can enable the lens support to be reset quickly after moving along a plane vertical to the optical axis of the lens.

Description

Triaxial anti-shake voice coil motor structure

Technical Field

The invention relates to the field of voice coil motors, in particular to a three-axis anti-shake voice coil motor structure.

Background

The miniature automatic focusing camera is widely applied to products such as mobile phones, automobiles, unmanned planes, security monitoring, smart homes and the like. In a conventional micro auto-focus camera, a voice coil motor drives a lens to move along an optical axis of the lens, so as to achieve an auto-focus or zoom function. However, when the camera is used for photographing and shooting, the lens cannot be kept absolutely stable due to human shake or other reasons, a certain offset is generated, and at the moment, the focusing and the light incoming amount of the camera are affected, so that the quality of the image acquired by the camera is affected.

In order to realize anti-shake, a three-axis voice coil motor is developed, which drives a lens holder for fixing a lens to perform three-axis movement through a three-axis movement driver, so that the lens can move along the direction of the optical axis of the lens to perform focusing or zooming, that is, can also move along a plane perpendicular to the optical axis of the lens to realize an anti-shake function; however, the conventional three-axis voice coil motor is not basically provided with a mechanism for driving the lens support to reset quickly after moving along a plane perpendicular to the optical axis of the lens, and the lens support can only move reversely by the three-axis movement driver to reset, so that the lens support cannot reset quickly after moving along the plane perpendicular to the optical axis of the lens.

Disclosure of Invention

The invention aims to provide a three-axis anti-shake voice coil motor structure which can enable a lens support to be quickly reset after moving along a plane vertical to the optical axis of a lens through an anti-shake reset mechanism.

In order to achieve the above purpose, the solution of the invention is:

a three-axis anti-shake voice coil motor structure comprises a shell, a base, a lens bracket, a three-axis movement driver and an anti-shake reset mechanism; the shell is arranged on the base, and an accommodating space with an upper opening and a lower opening is formed between the shell and the base; the lens support is movably matched in the accommodating space, and is provided with a mounting hole for mounting a lens, and the mounting hole penetrates through the lens support up and down; the three-axis moving driver drives the lens bracket to move along the front-back direction, the left-right direction and the up-down direction; the anti-shake reset mechanism comprises a first elastic arm which is arranged in a bending mode, and two ends of the first elastic arm are divided into a first fixed end and a first movable end; the first fixed end of the first elastic arm is connected with the front part or the rear part of the base, the first movable end of the first elastic arm is positioned on the left side or the right side of the lens support and is elastically connected with the lens support, and the first elastic arm deforms along with the front, back, left and right movement of the lens support.

The anti-shake reset mechanism further comprises a second elastic arm which is arranged in a bending mode, and two ends of the second elastic arm are divided into a second fixed end and a second movable end; the second fixed end of the second elastic arm is connected with the rear part of the base, the second movable end of the second elastic arm is positioned at the left side of the lens bracket and is elastically connected with the lens bracket, and the second elastic arm deforms along with the front, back, left and right movement of the lens bracket; the first fixed end of the first elastic arm is connected with the front part of the base, the first movable end of the first elastic arm is positioned on the right side of the lens support, and the first movable end is elastically connected with the lens support.

The first movable end of the first elastic arm and the second movable end of the second elastic arm are elastically connected with the lens bracket through a connecting sheet and a focusing reset elastic sheet; the connecting piece is provided with a through hole corresponding to the mounting hole and is connected with the first movable end of the first elastic arm and the second movable end of the second elastic arm; the deformation direction of the focusing reset elastic sheet is along the up-down direction, and two ends of the focusing reset elastic sheet are respectively connected with the lens bracket and the connecting sheet.

The number of the focusing reset elastic sheets is two, and the two focusing reset elastic sheets are divided into a first focusing reset elastic sheet and a second focusing reset elastic sheet; the first focusing reset elastic sheet and the second focusing reset elastic sheet are respectively positioned on the front side and the rear side of the lens support, the left end and the right end of the first focusing reset elastic sheet are respectively connected with the lens support and the connecting sheet, and the left end and the right end of the second focusing reset elastic sheet are respectively connected with the connecting sheet and the lens support.

The front part of the lens bracket is provided with a front connecting part protruding forwards, and the rear part of the lens bracket is provided with a rear connecting part protruding backwards; the right end of the first focusing reset elastic sheet is connected with the front connecting part, the left end of the first focusing reset elastic sheet is connected with the connecting sheet through a first connecting seat, the first connecting seat is positioned on the outer side of the lens support and is connected with the top of the connecting sheet, and the left end of the first focusing reset elastic sheet is connected with the first connecting seat; the left end of the second focusing reset elastic sheet is connected with the rear connecting part, the right end of the second focusing reset elastic sheet is connected with the connecting sheet through a second connecting seat, the second connecting seat is positioned on the outer side of the lens support and connected with the top of the connecting sheet, and the left end of the second focusing reset elastic sheet is connected with the second connecting seat.

The left front end and the right rear end of the base are respectively provided with a first fixing part and a second fixing part; the right front end and the left rear end of the lens bracket are respectively provided with a first connecting part and a second connecting part; the three-axis moving driver comprises a front memory alloy wire, a rear memory alloy wire, a left memory alloy wire and a right memory alloy wire; the left end and the right end of the memory alloy wire are respectively connected with the first fixing part and the first connecting part; the rear memory alloy wire is obliquely arranged on the rear side of the lens support, the left end of the rear memory alloy wire is lower than the right end of the rear memory alloy wire, and the left end and the right end of the rear memory alloy wire are respectively connected with the second connecting part and the second fixing part; the left memory alloy wire is obliquely arranged on the left side of the lens bracket, the front end of the left memory alloy wire is higher than the rear end of the left memory alloy wire, and the front end and the rear end of the left memory alloy wire are respectively connected with the first fixing part and the second connecting part; the right memory alloy wire is obliquely arranged on the right side of the lens support, the front end of the right memory alloy wire is lower than the rear end of the right memory alloy wire, and the front end and the rear end of the right memory alloy wire are respectively connected with the first connecting portion and the second fixing portion.

The first fixing part and the second fixing part protrude upwards to the base, the first connecting part and the second connecting part protrude downwards to the lens support, and the bottom ends of the first connecting part and the second connecting part movably abut against the base.

The three-axis anti-shake voice coil motor structure further comprises a conductive elastic sheet in an annular structure, wherein four corners of the conductive elastic sheet are respectively connected with the top end of the first connecting portion, the top end of the second connecting portion, the top end of the first fixing portion and the top end of the second fixing portion, and the conductive elastic sheet is electrically connected with the right end of the front memory alloy wire, the left end of the rear memory alloy wire, the rear end of the left memory alloy wire and the front end of the right memory alloy wire.

Two first conductive seats are fixed on the first connecting part, the two first conductive seats are respectively connected with the right end of the memory alloy wire and the front end of the right memory alloy wire, and the tops of the two first conductive seats are bent to form first connecting sheets; two second conductive seats are fixed on the second connecting part, the two second conductive seats are respectively connected with the left end of the rear memory alloy wire and the rear end of the left memory alloy wire, and the tops of the two second conductive seats are bent to form second connecting sheets; the right front corner of the conductive elastic sheet extends inwards to form a first welding sheet, the left back corner of the conductive elastic sheet extends inwards to form a second welding sheet, the bottom surface of the first welding sheet of the conductive elastic sheet is connected with the top surfaces of the first connecting sheets of the two first conductive seats in a laser welding mode in a welding mode, and the bottom surface of the second welding sheet of the conductive elastic sheet is connected with the top surfaces of the second connecting sheets of the two second conductive seats in a laser welding mode in a welding mode.

Two third conductive seats are fixed on the first fixing part and are respectively connected with the left end of the front memory alloy wire and the front end of the left memory alloy wire; two fourth conductive seats are fixed on the second fixing part and are respectively connected with the left end of the rear memory alloy wire and the rear end of the right memory alloy wire; the base is provided with five conductive connecting terminals, the five conductive connecting terminals are divided into a first conductive connecting terminal, a second conductive connecting terminal, a third conductive connecting terminal, a fourth conductive connecting terminal and a fifth conductive connecting terminal, the first conductive connecting terminal is electrically connected with the conductive elastic sheet, the second conductive connecting terminal and the third conductive connecting terminal are respectively electrically connected with the two third conductive seats, and the fourth conductive connecting terminal and the fifth conductive connecting terminal are respectively electrically connected with the two fourth conductive seats.

By adopting the scheme, the lens bracket moves along the front-back direction and the left-right direction, namely the lens bracket moves along a plane vertical to the optical axis of the lens; the first elastic arm of the anti-shake reset mechanism can deform along with the front-back and left-right movement of the lens support, so that the first elastic arm can deform to provide restoring force for the lens support after the lens support moves front-back and left-right and further to enable the lens support to reset more quickly after moving along a plane vertical to the optical axis of a lens.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view of a portion of the present invention in FIG. 1;

FIG. 4 is a partial schematic view of the present invention in FIG. 2;

FIG. 5 is a partial schematic view of the present invention in FIG. 3;

FIG. 6 is a partial schematic view of the present invention 4;

FIG. 7 is a partial schematic view of the present invention 5;

FIG. 8 is a cross-sectional view of the present invention 1;

FIG. 9 is a cross-sectional view of the present invention 2;

description of reference numerals:

the outer shell 1 is provided with a plurality of grooves,

a base 2, a first conductive connecting terminal 201, a second conductive connecting terminal 202, a third conductive connecting terminal 203, a fourth conductive connecting terminal 204, a fifth conductive connecting terminal 205, a first fixing portion 21, a second fixing portion 22, a first fixed conductive seat 23, a first clamping fixing portion 231, a second fixed conductive seat 24, a second clamping fixing portion 241,

a lens holder 3, a mounting hole 30, a first connecting portion 31, a second connecting portion 32, a first connecting conductive pad 33, a first clamping connecting portion 331, a first connecting piece 332, a second connecting conductive pad 34, a second clamping connecting portion 341, a second connecting piece 342, a front connecting portion 35, a rear connecting portion 36,

a three-axis moving driver 4, a front memory alloy wire 41, a rear memory alloy wire 42, a left memory alloy wire 43, a right memory alloy wire 44,

the anti-shake reset mechanism 5, a first elastic arm 51, a first fixed end 511, a first movable end 512, a second elastic arm 52, a second fixed end 521, a second movable end 522, a connecting piece 53, a through hole 530,

the conductive elastic sheet 6, the first welding piece 61, the second welding piece 62,

a focusing reset spring 7, a first focusing reset spring 71, a second focusing reset spring 72,

a first joint seat 8, a second joint seat 9,

the accommodating space S.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

In the description of the present invention, it should be noted that the terms "center", "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 9, the present invention discloses a three-axis anti-shake voice coil motor structure, which includes a housing 1, a base 2, a lens holder 3, a three-axis moving driver 4 and an anti-shake reset mechanism 5; the shell 1 is arranged on the base 2, and an accommodating space S with an upper opening and a lower opening is formed between the shell 1 and the base 2; the lens support 3 is movably matched in the accommodating space S, a mounting hole 30 for mounting a lens is arranged on the lens support 3, and the mounting hole 30 penetrates up and down to allow light to pass through; the three-axis movement driver 4 drives the lens support 3 to move along the front-back direction, the left-right direction and the up-down direction, when the lens support 3 moves up and down, the lens support 3 moves along the optical axis of the lens, at the moment, the lens support 3 drives the lens to move for focusing or zooming, and when the lens support 3 moves front and back and left and right, the lens support 3 moves along the plane vertical to the optical axis of the lens; the anti-shake reset mechanism 5 is used for providing restoring force for the lens holder 3 after the lens holder 3 moves back and forth and moves left and right, so that the lens holder 3 can be reset more quickly after moving along a plane perpendicular to the optical axis of the lens.

As shown in fig. 1 and fig. 3 to 7, a first fixing portion 21 and a second fixing portion 22 are respectively disposed at the front left end and the rear right end of the base 2; the right front end and the left rear end of the lens holder 3 are respectively provided with a first connecting portion 31 and a second connecting portion 32. In cooperation, the three-axis moving driver 4 comprises a front memory alloy wire 41, a rear memory alloy wire 42, a left memory alloy wire 43 and a right memory alloy wire 44; the front memory alloy wire 41 is obliquely arranged on the front side of the lens holder 3, the left end of the front memory alloy wire 31 is higher than the right end of the front memory alloy wire 31, and the left end and the right end of the front memory alloy wire 31 are respectively connected with the first fixing part 21 and the first connecting part 31; the rear memory alloy wire 42 is obliquely arranged at the rear side of the lens holder 3, the left end of the rear memory alloy wire 42 is lower than the right end of the rear memory alloy wire 42, and the left end and the right end of the rear memory alloy wire 42 are respectively connected with the second connecting part 32 and the second fixing part 22; the left memory alloy wire 43 is obliquely arranged on the left side of the lens bracket 3, the front end of the left memory alloy wire 43 is higher than the rear end of the left memory alloy wire 43, and the front end and the rear end of the left memory alloy wire 43 are respectively connected with the first fixing part 21 and the second connecting part 32; the right memory alloy wire 44 is obliquely arranged on the right side of the lens holder 3, the front end of the right memory alloy wire 44 is lower than the rear end of the right memory alloy wire 44, and the front end and the rear end of the right memory alloy wire 44 are respectively connected with the first connecting part 41 and the second fixing part 22. As shown in fig. 3 and 4, when the memory alloy wire 41 is energized to heat and contract the memory alloy wire 41, the memory alloy wire 41 pulls the lens holder 3 to move left; as shown in fig. 4, when the rear memory alloy wire 42 is electrified to heat and contract the rear memory alloy wire 42, the rear memory alloy wire 42 pulls the lens holder 3 to move right; as shown in fig. 3 and 6, when the left memory alloy wire 43 is electrified to heat and contract the left memory alloy wire 43, the left memory alloy wire 43 pulls the lens holder 3 to move forward; as shown in fig. 4 and 5, when the right memory alloy wire 44 is energized to heat and contract the right memory alloy wire 44, the right memory alloy wire 44 pulls the lens holder 3 to move backward; as shown in fig. 3 to 7, when the front memory alloy wire 41, the rear memory alloy wire 42, the left memory alloy wire 43, and the right memory alloy wire 44 are energized to heat and contract the front memory alloy wire 41, the rear memory alloy wire 42, the left memory alloy wire 43, and the right memory alloy wire 44, the front memory alloy wire 41, the rear memory alloy wire 42, the left memory alloy wire 43, and the right memory alloy wire 44 pull the lens holder 3 upward together, and when the front memory alloy wire 41, the rear memory alloy wire 42, the left memory alloy wire 43, and the right memory alloy wire 44 are de-energized to extend and reset the front memory alloy wire 41, the rear memory alloy wire 42, the left memory alloy wire 43, and the right memory alloy wire 44, the lens holder 3 moves downward.

As shown in fig. 1 and fig. 2 to fig. 7, two first connecting conductive pads 33 may be fixed on the first connecting portion 31, the first connecting conductive pads 33 may be fixed on the first connecting portion 31 by clipping or screw locking or bonding, the two first connecting conductive pads 33 are respectively connected to the right end of the memory alloy wire 41 and the front end of the right memory alloy wire 44 to connect the right end of the memory alloy wire 41 and the front end of the right memory alloy wire 44 to the first connecting portion 31, and the lower portions of the two first connecting conductive pads 33 may respectively form a first clamping connecting portion 331 to respectively clamp the right end of the memory alloy wire 41 and the front end of the right memory alloy wire 44; two second connecting conductive seats 34 are fixed on the second connecting portion 32, the second connecting conductive seats 34 can be fixed on the second connecting portion 32 in a clamping or screw locking or bonding mode, the two second connecting conductive seats 34 are respectively connected with the left end of the memory alloy wire 42 and the rear end of the left memory alloy wire 43 so as to connect the left end of the memory alloy wire 42 and the rear end of the left memory alloy wire 43 with the second connecting portion 32, and second clamping connecting portions 341 can be respectively formed at the lower parts of the two second connecting conductive seats 34 so as to respectively clamp the left end of the memory alloy wire 42 and the rear end of the left memory alloy wire 43; two first fixed conductive seats 23 are fixed on the first fixing portion 21, the first fixed conductive seats 23 can be fixed on the first fixing portion 21 in a clamping or screw locking or bonding mode, the two first fixed conductive seats 23 are respectively connected with the left end of the memory alloy wire 41 and the front end of the left memory alloy wire 43 to connect the left end of the memory alloy wire 41 and the front end of the left memory alloy wire 43 with the first fixing portion 21, and first clamping fixing portions 231 can be respectively formed on the upper portions of the two first fixed conductive seats 23 to respectively clamp the left end of the memory alloy wire 41 and the front end of the left memory alloy wire 43; two second conductive holders 24 are fixed on the second fixing portion 22, the second conductive holders 24 can be fixed on the second fixing portion 22 by means of clamping or screw locking or bonding, the two second conductive holders 24 are respectively connected with the left end of the rear memory alloy wire 42 and the rear end of the right memory alloy wire 41 to connect the left end of the rear memory alloy wire 42 and the rear end of the right memory alloy wire 41 with the second fixing portion 22, and second clamping portions 241 can be respectively formed on the upper portions of the two second conductive holders 24 to respectively clamp the left end of the rear memory alloy wire 42 and the rear end of the right memory alloy wire 41.

As shown in fig. 1 and fig. 2 to 7, the first fixing portion 21 and the second fixing portion 22 can protrude upward from the base 2, the first connecting portion 31 and the second connecting portion 32 protrude downward from the lens holder 3, and bottom ends of the first connecting portion 31 and the second connecting portion 32 movably abut against the base 2 to support the lens holder 3.

As shown in fig. 1 and 2 to 7, the present invention may further include a conductive elastic sheet 6 having a ring structure, four corners of the conductive elastic sheet 6 are respectively connected to the top end of the first connecting portion 31, the top end of the second connecting portion 32, the top end of the first fixing portion 21, and the top end of the second fixing portion 22 by clamping or screw locking or bonding to fix the conductive elastic sheet 6, the conductive elastic sheet 6 is connected to the two first conductive connecting seats 33 and the two second conductive connecting seats 34 by welding, so that the conductive elastic sheet 6 is electrically connected to the right end of the memory alloy wire 41, the left end of the memory alloy wire 42, the rear end of the memory alloy wire 43, and the front end of the memory alloy wire 44, and thus the ground end of the external control circuit is electrically connected to the conductive elastic sheet 6 to achieve the ground end of the external control circuit and the right end of the memory alloy wire 41, the left end of the memory alloy wire 42, and the ground end of the memory alloy, The rear end of the left memory alloy wire 43 is electrically connected with the front end of the right memory alloy wire 44, so that the grounding end of the external control circuit is electrically connected with the right end of the front memory alloy wire 41, the left end of the rear memory alloy wire 42, the rear end of the left memory alloy wire 43 and the front end of the right memory alloy wire 44, and the four output ends of the external control circuit are electrically connected with the left end of the front memory alloy wire 41, the right end of the rear memory alloy wire 42, the front end of the left memory alloy wire 43 and the rear end of the right memory alloy wire 44 respectively, so that the external control circuit can control whether the front memory alloy wire 41 is electrified or not, whether the rear memory alloy wire 42 is electrified or not, whether the left memory alloy wire 43 is electrified or not and whether the right memory alloy wire 44 is electrified or not respectively. As shown in fig. 1 to 3, five conductive connection terminals are disposed on the base 2, the five conductive connection terminals are divided into a first conductive connection terminal 201, a second conductive connection terminal 202, a third conductive connection terminal 203, a fourth conductive connection terminal 204 and a fifth conductive connection terminal 205, the first conductive connection terminal 201 is electrically connected to the conductive elastic sheet 6, the second conductive connection terminal 202 and the third conductive connection terminal 203 are electrically connected to the two first fixed conductive seats 23, the fourth conductive connection terminal 204 and the fifth conductive connection terminal 205 are electrically connected to the two second conductive fixed seats 24, the five conductive connection terminals are used for being connected to an external control circuit so that the external control circuit can be electrically connected to the left end of the memory alloy wire 41, the right end of the memory alloy wire 42, the front end of the left memory alloy wire 43, the rear end of the right memory alloy wire 44 and the conductive elastic sheet 6, thus, the invention can be conveniently connected with an external control circuit through the five conductive connecting terminals. The first conductive connection terminal 201 can be connected to the conductive elastic sheet 6 through a conductive sheet embedded in the base 2, the second conductive connection terminal 202 and the third conductive connection terminal 203 can be respectively connected to the two first fixed conductive bases 23 through a conductive sheet embedded in the base 2, and the fourth conductive connection terminal 204 and the fifth conductive connection terminal 205 can also be respectively connected to the two second conductive fixed bases 24 through a conductive sheet embedded in the base 2.

As shown in fig. 1, 3 and 7, the top of each of the two first connecting conductive seats 33 is bent to form a first connecting piece 332, the right front corner of the conductive elastic piece 6 extends inward to form a first welding piece 61, and the bottom surface of the first welding piece 61 of the conductive elastic piece 6 is connected with the top surfaces of the first connecting pieces 332 of the two first connecting conductive seats 33 in a welding manner, so that the connecting area between the conductive elastic piece 6 and the two first connecting conductive seats 33 is large by arranging the first welding pieces 61 and the first connecting pieces 332, and the conductive elastic piece 6 is stably connected with the two first connecting conductive seats 33; the tops of the two second connecting conductive seats 34 are bent to form second connecting pieces 342, the left rear edge of the conductive elastic sheet 6 extends inwards to form second welding pieces 62, the bottom surfaces of the second welding pieces 62 of the conductive elastic sheet 6 are connected with the top surfaces of the second connecting pieces 342 of the two second connecting conductive seats 34 in a welding mode, the connecting area of the conductive elastic sheet 6 and the two second connecting conductive seats 34 is large by arranging the second welding pieces 62 and the second connecting pieces 342, and the conductive elastic sheet 6 is connected with the two second connecting conductive seats 34 stably. In addition, the bottom surface of the first welding piece 61 of the conductive elastic sheet 6 is connected with the top surfaces of the first connecting pieces 332 of the two first connecting conductive seats 33 in a laser welding mode, the bottom surfaces of the second welding pieces 62 of the conductive elastic sheet 6 are connected with the top surfaces of the second connecting pieces 342 of the two second connecting conductive seats 34 in a laser welding mode, the laser welding is compared with common soldering tin welding, the problem of tin explosion cannot occur in the laser welding, and the situation that the tin explosion generates waste residues to influence the movement of the lens support 3 can be avoided.

As shown in fig. 1 and fig. 3 to 9, the anti-shake resetting mechanism 5 includes a first elastic arm 51 disposed in a bending manner, two ends of the first elastic arm 51 are divided into a first fixed end 511 and a first movable end 512, the first fixed end 511 of the first elastic arm 51 is connected to the front portion of the base 2 by means of clamping or screw locking, the first movable end 512 of the first elastic arm 51 is located on the right side of the lens holder 3, the first movable end 512 is elastically connected to the lens holder 3, the elastic connection between the first movable end 512 and the lens holder 3 enables the first elastic arm 51 not to move up and down, and enables the lens holder 3 to move back and forth and left and right to drive the first movable end 512 to move back and forth and left and right to deform along with the movement of the lens holder 3, so that the first elastic arm 51 deforms to provide a restoring force for the lens holder 3 after the lens holder 3 moves back and forth and left and right, therefore, the lens holder 3 can be reset more quickly after moving back and forth and left and right, namely, the lens holder 3 can be reset more quickly after moving along a plane vertical to the optical axis of the lens.

As shown in fig. 1 and fig. 3 to 9, further, the anti-shake resetting mechanism 5 may further include a second elastic arm 52 bent, where two ends of the second elastic arm 52 are divided into a second fixed end 521 and a second movable end 522; the second fixed end 521 of the second elastic arm 52 is connected to the rear portion of the base 1 by clipping or screw locking, the second movable end 522 of the second elastic arm 52 is located at the left side of the lens holder 3, the second movable end 522 is elastically connected to the lens holder 3, the elastic connection between the second movable end 522 and the lens holder 3 can prevent the second elastic arm 52 from causing the lens holder 3 to be unable to move up and down, and the lens holder 3 can move back and forth and left and right to drive the second movable end 522 to move back and forth and left and right, and further the second elastic arm 52 is deformed along with the forward, backward, leftward and rightward movement of the lens holder 3, so that the second elastic arm 52 is deformed to provide another restoring force to the lens holder 3 after the lens holder 3 moves forward, backward, leftward and rightward, so that the lens holder 3 can be more quickly reset after moving from front to back and left to right, i.e. the lens holder 3 can be more quickly reset after moving along a plane perpendicular to the optical axis of the lens.

As shown in fig. 1 and fig. 3 to fig. 9, the first movable end 512 of the first elastic arm 51 and the second movable end 522 of the second elastic arm 52 can be elastically connected to the lens holder 3 through the connecting piece 53 and the focus resetting elastic piece 7; the connecting piece 53 is provided with a through hole 530 corresponding to the mounting hole 30 to prevent the connecting piece 53 from obstructing light from passing through, the connecting piece 53 can be clamped between the lens holder 3 and the base 2, the connecting piece 53 is connected with the first movable end 512 of the first elastic arm 5 and the second movable end 522 of the second elastic arm 52, the deformation direction of the focusing reset elastic sheet 7 is along the up-down direction, two ends of the focusing reset elastic sheet 7 are respectively connected with the lens holder 3 and the connecting piece 3, and further the first movable end 512 of the first elastic arm 51 and the second movable end 522 of the second elastic arm 52 are elastically connected with the lens holder 3, so that the first elastic arm 51 and the second elastic arm 52 cannot cause the lens holder 3 to be incapable of moving up and down. The connecting piece 53, the first elastic arm 51 and the second elastic arm 52 can be integrally formed, the deformation direction of the focusing reset elastic sheet 7 along the up-down direction means that the focusing reset elastic sheet 7 is easy to deform under the force along the up-down direction, and the focusing reset elastic sheet 7 is not easy to deform under the force along the front-back direction or the left-right direction, so that the lens support 3 can move front and back, left and right to drive the connecting piece 3 to move front and back and left and right; and also can make the lens holder 3 reciprocate like this and can drive the shell fragment 7 that resets of focusing and move and warp, and then make the shell fragment 7 that resets of focusing provide a reset force for lens holder 3 to make lens holder 3 can reset more soon after reciprocating.

As shown in fig. 1 and fig. 3 to 9, the number of the focus reset spring pieces 7 is two, the two focus reset spring pieces 7 are divided into a first focus reset spring piece 71 and a second focus reset spring piece 72, the first focus reset spring piece 71 and the second focus reset spring piece 72 are respectively located at the front side and the rear side of the lens holder 3, the left end and the right end of the first focus reset spring piece 71 are respectively connected with the lens holder 3 and the connecting piece 53, and the left end and the right end of the second focus reset spring piece 72 are respectively connected with the connecting piece 53 and the lens holder 3; wherein, the front part of the lens bracket 3 is provided with a front joining part 35 protruding forwards, and the rear part of the lens bracket is provided with a rear joining part 36 protruding backwards; the right end of the first focus resetting elastic sheet 71 is connected with the front connecting part 35 in a clamping or screw locking mode, the left end of the first focus resetting elastic sheet 71 is connected with the connecting sheet through a first connecting seat 8, the first connecting seat 8 is positioned on the outer side of the lens support 3 and is connected with the top of the connecting sheet 53 in a clamping or screw locking mode, and the left end of the first focus resetting elastic sheet 71 is connected with the first connecting seat 8 in a clamping or screw locking mode; the left end of the second focus resetting elastic sheet 72 is connected with the rear connecting part 36 in a clamping or screw locking mode, the right end of the second focus resetting elastic sheet 72 is connected with the connecting sheet through the second connecting seat 9, the second connecting seat 9 is positioned on the outer side of the lens support 3 and is connected with the top of the connecting sheet 53 in a clamping or screw locking mode, and the left end of the second focus resetting elastic sheet 72 is connected with the second connecting seat 9 in a clamping or screw locking mode.

It should be noted that the invention is not limited to the first fixed end 511 of the first elastic arm 51 being connected to the front portion of the base 2, the first movable end 512 of the first elastic arm 51 being located at the right side of the lens holder 3 and the first movable end 512 being elastically connected to the lens holder 3, the second fixed end 521 of the second elastic arm 52 being connected to the rear portion of the base 1, the second movable end 522 of the second elastic arm 52 being located at the left side of the lens holder 3 and the second movable end 522 being elastically connected to the lens holder 3; alternatively, the first fixed end 511 of the first elastic arm 51 is connected to the rear portion of the base 2, the first movable end 512 of the first elastic arm 51 is located at the right side of the lens holder 3, the first movable end 512 is elastically connected to the lens holder 3, the second fixed end 521 of the second elastic arm 52 is connected to the front portion of the base 1, the second movable end 522 of the second elastic arm 52 is located at the left side of the lens holder 3, and the second movable end 522 is elastically connected to the lens holder 3; alternatively, the first fixed end 511 of the first elastic arm 51 is connected to the front portion of the base 2, the first movable end 512 of the first elastic arm 51 is located at the left side of the lens holder 3, the first movable end 512 is elastically connected to the lens holder 3, the second fixed end 521 of the second elastic arm 52 is connected to the rear portion of the base 1, the second movable end 522 of the second elastic arm 52 is located at the right side of the lens holder 3, and the second movable end 522 is elastically connected to the lens holder 3; alternatively, the first fixed end 511 of the first elastic arm 51 is connected to the rear portion of the base 2, the first movable end 512 of the first elastic arm 51 is located at the left side of the lens holder 3, the first movable end 512 is elastically connected to the lens holder 3, the second fixed end 521 of the second elastic arm 52 is connected to the front portion of the base 1, the second movable end 522 of the second elastic arm 52 is located at the right side of the lens holder 3, and the second movable end 522 is elastically connected to the lens holder 3; therefore, the first elastic arm 51 and the second elastic arm 52 can deform along with the front, back, left and right movement of the lens holder 3, so that the lens holder 3 can be reset more quickly after the front, back, left and right movement.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. The utility model provides a triaxial anti-shake voice coil motor structure which characterized in that: the three-axis moving driver comprises a shell, a base, a lens bracket, a three-axis moving driver and an anti-shake reset mechanism;

the shell is arranged on the base, and an accommodating space with an upper opening and a lower opening is formed between the shell and the base; the lens support is movably matched in the accommodating space, and is provided with a mounting hole for mounting a lens, and the mounting hole penetrates through the lens support up and down; the three-axis moving driver drives the lens bracket to move along the front-back direction, the left-right direction and the up-down direction;

the anti-shake reset mechanism comprises a first elastic arm which is arranged in a bending mode, and two ends of the first elastic arm are divided into a first fixed end and a first movable end; the first fixed end of the first elastic arm is connected with the front part or the rear part of the base, the first movable end of the first elastic arm is positioned on the left side or the right side of the lens support and is elastically connected with the lens support, and the first elastic arm deforms along with the front, back, left and right movement of the lens support.

2. The tri-axial anti-shake voice coil motor structure of claim 1, wherein: the anti-shake reset mechanism further comprises a second elastic arm which is arranged in a bending mode, and two ends of the second elastic arm are divided into a second fixed end and a second movable end; the second fixed end of the second elastic arm is connected with the rear part of the base, the second movable end of the second elastic arm is positioned at the left side of the lens bracket and is elastically connected with the lens bracket, and the second elastic arm deforms along with the front, back, left and right movement of the lens bracket; the first fixed end of the first elastic arm is connected with the front part of the base, the first movable end of the first elastic arm is positioned on the right side of the lens support, and the first movable end is elastically connected with the lens support.

3. The tri-axial anti-shake voice coil motor structure of claim 2, wherein: the first movable end of the first elastic arm and the second movable end of the second elastic arm are elastically connected with the lens bracket through a connecting sheet and a focusing reset elastic sheet;

the connecting piece is provided with a through hole corresponding to the mounting hole and is connected with the first movable end of the first elastic arm and the second movable end of the second elastic arm;

the deformation direction of the focusing reset elastic sheet is along the up-down direction, and two ends of the focusing reset elastic sheet are respectively connected with the lens bracket and the connecting sheet.

4. The tri-axial anti-shake voice coil motor structure of claim 3, wherein: the number of the focusing reset elastic sheets is two, and the two focusing reset elastic sheets are divided into a first focusing reset elastic sheet and a second focusing reset elastic sheet; the first focusing reset elastic sheet and the second focusing reset elastic sheet are respectively positioned on the front side and the rear side of the lens support, the left end and the right end of the first focusing reset elastic sheet are respectively connected with the lens support and the connecting sheet, and the left end and the right end of the second focusing reset elastic sheet are respectively connected with the connecting sheet and the lens support.

5. The tri-axial anti-shake voice coil motor structure of claim 4, wherein: the front part of the lens bracket is provided with a front connecting part protruding forwards, and the rear part of the lens bracket is provided with a rear connecting part protruding backwards;

the right end of the first focusing reset elastic sheet is connected with the front connecting part, the left end of the first focusing reset elastic sheet is connected with the connecting sheet through a first connecting seat, the first connecting seat is positioned on the outer side of the lens support and is connected with the top of the connecting sheet, and the left end of the first focusing reset elastic sheet is connected with the first connecting seat;

the left end of the second focusing reset elastic sheet is connected with the rear connecting part, the right end of the second focusing reset elastic sheet is connected with the connecting sheet through a second connecting seat, the second connecting seat is positioned on the outer side of the lens support and connected with the top of the connecting sheet, and the left end of the second focusing reset elastic sheet is connected with the second connecting seat.

6. The structure of any one of claims 1 to 5, wherein: the left front end and the right rear end of the base are respectively provided with a first fixing part and a second fixing part; the right front end and the left rear end of the lens bracket are respectively provided with a first connecting part and a second connecting part;

the three-axis moving driver comprises a front memory alloy wire, a rear memory alloy wire, a left memory alloy wire and a right memory alloy wire;

the left end and the right end of the memory alloy wire are respectively connected with the first fixing part and the first connecting part;

the rear memory alloy wire is obliquely arranged on the rear side of the lens support, the left end of the rear memory alloy wire is lower than the right end of the rear memory alloy wire, and the left end and the right end of the rear memory alloy wire are respectively connected with the second connecting part and the second fixing part;

the left memory alloy wire is obliquely arranged on the left side of the lens bracket, the front end of the left memory alloy wire is higher than the rear end of the left memory alloy wire, and the front end and the rear end of the left memory alloy wire are respectively connected with the first fixing part and the second connecting part;

the right memory alloy wire is obliquely arranged on the right side of the lens support, the front end of the right memory alloy wire is lower than the rear end of the right memory alloy wire, and the front end and the rear end of the right memory alloy wire are respectively connected with the first connecting portion and the second fixing portion.

7. The tri-axial anti-shake voice coil motor structure of claim 6, wherein: the first fixing part and the second fixing part protrude upwards to the base, the first connecting part and the second connecting part protrude downwards to the lens support, and the bottom ends of the first connecting part and the second connecting part movably abut against the base.

8. The tri-axial anti-shake voice coil motor structure of claim 7, wherein: the memory alloy wire comprises a first connecting part, a second connecting part, a first fixing part, a second fixing part and a conductive elastic sheet, and is characterized by further comprising a conductive elastic sheet in an annular structure, wherein the four corners of the conductive elastic sheet are respectively connected with the top end of the first connecting part, the top end of the second connecting part, the top end of the first fixing part and the top end of the second fixing part, and the conductive elastic sheet is electrically connected with the right end of the front memory alloy wire, the left end of the rear memory alloy wire, the rear end of the left memory alloy.

9. The tri-axial anti-shake voice coil motor structure of claim 8, wherein: two first conductive seats are fixed on the first connecting part, the two first conductive seats are respectively connected with the right end of the memory alloy wire and the front end of the right memory alloy wire, and the tops of the two first conductive seats are bent to form first connecting sheets; two second conductive seats are fixed on the second connecting part, the two second conductive seats are respectively connected with the left end of the rear memory alloy wire and the rear end of the left memory alloy wire, and the tops of the two second conductive seats are bent to form second connecting sheets;

the right front corner of the conductive elastic sheet extends inwards to form a first welding sheet, the left back corner of the conductive elastic sheet extends inwards to form a second welding sheet, the bottom surface of the first welding sheet of the conductive elastic sheet is connected with the top surfaces of the first connecting sheets of the two first conductive seats in a laser welding mode in a welding mode, and the bottom surface of the second welding sheet of the conductive elastic sheet is connected with the top surfaces of the second connecting sheets of the two second conductive seats in a laser welding mode in a welding mode.

10. The tri-axial anti-shake voice coil motor structure of claim 9, wherein: two third conductive seats are fixed on the first fixing part and are respectively connected with the left end of the front memory alloy wire and the front end of the left memory alloy wire; two fourth conductive seats are fixed on the second fixing part and are respectively connected with the left end of the rear memory alloy wire and the rear end of the right memory alloy wire;

the base is provided with five conductive connecting terminals, the five conductive connecting terminals are divided into a first conductive connecting terminal, a second conductive connecting terminal, a third conductive connecting terminal, a fourth conductive connecting terminal and a fifth conductive connecting terminal, the first conductive connecting terminal is electrically connected with the conductive elastic sheet, the second conductive connecting terminal and the third conductive connecting terminal are respectively electrically connected with the two third conductive seats, and the fourth conductive connecting terminal and the fifth conductive connecting terminal are respectively electrically connected with the two fourth conductive seats.