阅读说明：本技术 一种弹簧防抖系统及采用其的镜头防抖对焦装置 (Spring anti-shake system and lens anti-shake focusing device adopting same ) 是由 麦练智 于 2020-12-31 设计创作，主要内容包括：本发明涉及防抖云台技术领域,具体公开了一种弹簧防抖系统及采用其的镜头防抖对焦装置,所述弹簧防抖系统包括至少两个防抖弹簧,每个所述防抖弹簧包括固定部、弹簧连接臂和活动部,所述固定部上开设有第一连接槽；所述弹性连接臂的一端与所述第一连接槽连接；所述弹性连接臂的竖直中线长度与其边缘到竖直中线的最大距离之比大于5：1；所述弹簧连接臂的宽度与其厚度之比不小于2：1；所述活动部上开设有第二连接槽,所述第二连接槽与所述弹性连接臂的另一端连接。本发明可以充分利用装置内的有限空间,并且防抖弹簧系统可以补偿其他部件在不同方向的弹性差异,达致更佳的防抖效果。(The invention relates to the technical field of anti-shake pan-tilt, and particularly discloses a spring anti-shake system and a lens anti-shake focusing device adopting the same, wherein the spring anti-shake system comprises at least two anti-shake springs, each anti-shake spring comprises a fixed part, a spring connecting arm and a movable part, and a first connecting groove is formed in the fixed part; one end of the elastic connecting arm is connected with the first connecting groove; the ratio of the length of the vertical midline of the resilient connecting arm to the maximum distance from its edge to the vertical midline is greater than 5: 1; the ratio of the width of the spring connecting arm to the thickness thereof is not less than 2: 1; and a second connecting groove is formed in the movable part and is connected with the other end of the elastic connecting arm. The anti-shake spring system can fully utilize the limited space in the device, and the anti-shake spring system can compensate the elastic difference of other components in different directions, thereby achieving better anti-shake effect.)

1. A spring anti-shake system comprising at least two anti-shake springs, each of the anti-shake springs comprising:

the fixing part is provided with a first connecting groove;

one end of the elastic connecting arm is connected with the first connecting groove; the ratio of the length of the vertical midline of the resilient connecting arm to the maximum distance from its edge to the vertical midline is greater than 5: 1; the ratio of the width of the spring connecting arm to the thickness thereof is not less than 2: 1;

the movable part is provided with a second connecting groove, and the second connecting groove is connected with the other end of the elastic connecting arm.

2. The spring anti-shake system of claim 1, wherein: the spring anti-shake system is provided with a central line, and the included angle between the vertical central line of each anti-shake spring and the central line is less than 10 degrees; the center line and the vertical center line of the anti-shake spring form a reference plane, and the minimum included angle between the plane where the anti-shake spring is located and the reference plane is smaller than 20 degrees.

3. The spring anti-shake system of claim 1, wherein: within a set of the anti-shake springs, the ratio of the width of one of the anti-shake springs to the width of the other anti-shake spring is not less than 10: 9.

4. the spring anti-shake system of claim 1, wherein: one side of the fixing part is provided with a first positioning groove, and the other side of the fixing part is provided with a first clamping groove; one side of the movable part is provided with a second positioning groove which is at the same side as the first positioning groove, and the other side of the movable part is provided with a second clamping groove which is at the same side as the first clamping groove.

5. The spring anti-shake system of claim 1, wherein: the elastic connecting arm is a rod-shaped elastic connecting arm.

6. The spring anti-shake system of claim 1, wherein: the elastic connecting arm is a wavy elastic connecting arm.

7. The spring anti-shake system of claim 1, wherein: the elastic connecting arms are sheet-shaped elastic connecting arms.

8. A lens anti-shake focusing apparatus using the spring anti-shake system according to any one of claims 1 to 7, wherein: further comprising:

the fixing structure comprises a positioning seat and a shell; the positioning seat is arranged in the shell;

the fixing part of each anti-shake spring is connected with the positioning seat;

the anti-shake structure comprises a sensor carrier, at least one group of anti-shake magnets and at least two groups of anti-shake coils; the anti-shake magnet is fixed inside the shell; the sensor carrier is connected with the movable part of the anti-shake spring; the anti-shake coil is arranged on the sensor carrier and corresponds to the anti-shake magnet;

the focusing structure comprises a lens carrier, at least one group of focusing magnets and at least one group of focusing coils; the focusing magnet is fixedly arranged on the inner wall of the shell; the lens carrier is arranged on the sensor carrier and at least has one spatial displacement degree of freedom; the focusing coil is arranged at the periphery of the lens carrier and is opposite to the focusing magnet;

the lens is arranged on the lens carrier; the included angle between the vertical midline of the elastic connecting arm and the optical axis of the lens is less than 10 degrees;

the module shell is connected with the bottom end of the fixed structure;

the sensor circuit board is arranged inside the module shell and is respectively connected with the fixing structure and the anti-shake structure;

an image sensor disposed on the sensor circuit board.

9. The lens anti-shake focusing apparatus according to claim 8, wherein: the positioning seat is provided with a conductive structure; the anti-shake spring is made of a conductive material, one end of the anti-shake spring is electrically connected with the anti-shake coil assembly, and the other end of the anti-shake spring is connected with a conductive structure in the fixed structure.

10. The lens anti-shake focusing apparatus according to claim 8, wherein: and the optical axis of the lens is consistent with the central line of the spring system.

Technical Field

The invention relates to the technical field of anti-shake pan-tilt, in particular to a spring anti-shake system and a lens anti-shake focusing device adopting the same.

Background

In recent years, small mobile devices with a shooting function have become widespread and have been expanded in application range, including aerial photography, motion cameras, and automobile data recorders. The conventional apparatus includes at least one Compact camera module. Therefore, the market of the module is huge, and the growth is steadily promoted.

When taking pictures and films, the pictures and films taken by the device are likely to be blurred or shaken by external vibration, which affects the quality of the pictures and films. This problem is exacerbated when the vibrations are relatively intense, or in low light conditions. To solve these problems, many small anti-shake technologies have appeared on the market. Among them, the effect of improving the picture quality is most excellent by mechanically compensating for the blurring and shaking of the image due to the vibration. The mechanical method can be to translate a group of lenses through an anti-shake actuator or to rotate a group of lenses and an image sensor, so as to achieve the anti-shake effect. The anti-shake effect of the rotary mechanical method is generally better than that of the translational mechanical method.

The rotary anti-shake actuator needs to have a mechanical structure, and the movable structures such as the lens and the image sensor have multi-axis Rotational Freedom (Rotational Degrees-of-Freedom). Meanwhile, in order to reduce the influence of external forces caused by acceleration in different directions or earth-core attraction on movable structures in the actuator, the mechanical structures are generally required to have no degree of Freedom of displacement (Translational dimensions-of-Freedom). In addition, the mechanical structure needs to have good resistance to falling so as to withstand the falling test that may occur when a small-sized mobile device is normally used.

Chinese patent No. 201180028200.2 discloses an optical unit with a shake correction function in which permanent magnets are provided at a plurality of locations spaced apart in the circumferential direction around the optical axis L on the outer peripheral surface of an imaging unit, which is a movable unit, and a sheet-like coil integrally provided with a plurality of coil portions extending in the circumferential direction and facing the permanent magnets is provided in a fixed body. In the sheet-like coil, the terminal portion faces the outside on the opposite side to the side facing the permanent magnet, and therefore, the coil portion can be electrically connected easily.

Chinese patent 201480037511.9 discloses a lens driving device, which includes a fixing assembly including a base frame; a movable assembly including a lens barrel; a set of magnets surrounding the movable assembly; three groups of coils; and a spring system attached between the movable assembly and the fixed assembly and configured to support the movable assembly and form a suspension system to allow the movable assembly to move along the first, second and third orthogonal axes. The lens barrel is configured to carry a lens unit, a third axis is parallel to an optical axis of the lens unit, and first and second axes are perpendicular to the third axis, respectively.

The defects of the technical scheme are as follows: the ball actuator generates nonlinear friction force in the motion process to influence the anti-shake effect; conventional springs have poor drop resistance and are susceptible to external forces affecting actuator performance.

Disclosure of Invention

The invention aims to provide a spring anti-shake system and a lens anti-shake focusing device adopting the same, which can fully utilize the limited space in a camera module to compensate the difference of spring coefficients in different directions caused by other components, thereby achieving better anti-shake effect.

In order to solve the above technical problem, the present invention provides a spring anti-shake system, which includes at least two anti-shake springs, and each anti-shake spring includes: the spring connecting arm comprises a fixed part, a spring connecting arm and a movable part, wherein a first connecting groove is formed in the fixed part; one end of the elastic connecting arm is connected with the first connecting groove; the ratio of the length of the vertical midline of the resilient connecting arm to the maximum distance from its edge to the vertical midline is greater than 5: 1; the ratio of the width of the spring connecting arm to the thickness thereof is not less than 2: 1; and a second connecting groove is formed in the movable part and is connected with the other end of the elastic connecting arm.

Preferably, the spring anti-shake system is provided with a central line, and an included angle between a vertical central line of each anti-shake spring and the central line is less than 10 degrees; the center line and the vertical center line of the anti-shake spring form a reference plane, and the minimum included angle between the plane where the anti-shake spring is located and the reference plane is smaller than 20 degrees.

Preferably, in a group of the anti-shake springs, the ratio of the width of one anti-shake spring to the width of the other anti-shake spring is not less than 10: 9.

preferably, one side of the fixing part is provided with a first positioning groove, and the other side of the fixing part is provided with a first clamping groove; one side of the movable part is provided with a second positioning groove which is at the same side as the first positioning groove, and the other side of the movable part is provided with a second clamping groove which is at the same side as the first clamping groove.

Preferably, the elastic connecting arms are rod-shaped elastic connecting arms.

Preferably, the elastic connecting arms are wavy elastic connecting arms.

Preferably, the elastic connecting arms are sheet-like elastic connecting arms.

The invention also provides a lens anti-shake focusing device adopting the anti-shake spring system, which comprises:

the fixing structure comprises a positioning seat and a shell; the positioning seat is arranged in the shell; the positioning seat is provided with a conductive structure;

the fixing part of each anti-shake spring is connected with the positioning seat;

the anti-shake structure comprises a sensor carrier, at least one group of anti-shake magnets and at least two groups of anti-shake coils; the anti-shake magnet is fixed inside the shell; the sensor carrier is connected with the movable part of the anti-shake spring; the anti-shake coil is arranged on the sensor carrier and corresponds to the anti-shake magnet;

the focusing structure comprises a lens carrier, at least one group of focusing magnets and at least one group of focusing coils; the focusing magnet is fixedly arranged on the inner wall of the shell; the lens carrier is arranged on the sensor carrier and at least has one spatial displacement degree of freedom; the focusing coil is arranged at the periphery of the lens carrier and is opposite to the focusing magnet;

the lens is arranged on the lens carrier; the included angle between the vertical midline of the elastic connecting arm and the optical axis of the lens is less than 10 degrees;

the module shell is connected with the bottom end of the fixed structure;

the sensor circuit board is arranged inside the module shell and is respectively connected with the fixing structure and the anti-shake structure;

an image sensor disposed on the sensor circuit board.

Preferably, a conductive structure is arranged on the positioning seat, the anti-shake coil is electrically connected with the conductive structure, the anti-shake spring is made of a conductive material, one end of the anti-shake spring is electrically connected with the anti-shake coil assembly, and the other end of the anti-shake spring is connected with the conductive structure in the fixing structure.

Preferably, the optical axis of the lens coincides with the spring system center line.

The invention has the following beneficial effects:

(1) the fixed part and the movable part are connected by the elastic connecting arm, so that the multi-axis freedom degree can be conveniently realized in the camera module; therefore, the spring coefficient and the anti-shake power consumption are also reduced;

(2) the anti-shake spring system is provided with the fixing part which can be used for connecting a fixing structure in a camera module, so that under the condition of not influencing the degree of freedom of the movable part, the stability and the falling resistance of the whole circuit board structure are ensured, and the reliability of the circuit board structure in falling is further improved;

(3) the lens anti-shake focusing device does not need complex production, such as excessive laser cutting; a complex assembly process is not needed, so that the production cost and the reject ratio are reduced, the production efficiency is improved, and the production cost is reduced;

(4) the invention fully utilizes the limited space of the device, simplifies the size structure and reduces the cost.

(5) The spring system of the invention can effectively reduce the spring coefficient of the turning shaft (namely the direction rotating around the optical axis), and can also compensate the larger spring coefficient of the turning shaft caused by other elastic components (such as an elastic part in a sensor circuit board), thereby achieving the effects of better anti-shake and more electricity-saving of the turning shaft.

Drawings

Fig. 1 is a schematic structural diagram of an anti-shake spring according to an embodiment of the present invention;

fig. 2 is a sectional view of an anti-shake spring according to an embodiment of the present invention;

fig. 3 is another schematic structural diagram of an anti-shake spring according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a lens anti-shake focusing apparatus according to an embodiment of the present invention;

FIG. 5 is a vertical sectional view of an anti-shake focusing apparatus for a lens according to an embodiment of the present invention;

FIG. 6 is an exploded view of an anti-shake focusing apparatus for lens according to an embodiment of the present invention;

FIG. 7 is a schematic view of a mounting structure of a spring anti-shake system according to an embodiment of the present invention;

fig. 8 is a horizontal cross-sectional view of a lens anti-shake focusing apparatus according to an embodiment of the invention.

Reference numerals:

1. a fixed structure; 101. positioning seats; 102. a housing; 103. a groove; 2. an anti-shake spring; 201. a fixed part; 202. a movable portion; 203. an elastic connecting arm; 3. an anti-shake structure; 301. a sensor carrier; 302. an anti-shake coil; 303. an anti-shake magnet; 4. a focusing structure; 401. a lens carrier; 402. a focusing coil; 403. a focusing magnet; 5. a focusing spring; 501. parallel spring pieces; 6. a lens; 7. a module housing; 8. a sensor circuit board; 9. an image sensor; 10. and (3) a filter.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

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

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1 and 2, a preferred embodiment of the present invention provides a spring anti-shake system including at least two anti-shake springs 2, each of the anti-shake springs 2 including: the spring fixing device comprises a fixing part 201, a spring connecting arm and a movable part 202, wherein a first connecting groove is formed in the fixing part 201; one end of the elastic connecting arm 203 is connected with the first connecting groove; the ratio of the length C of the vertical midline of the resilient connecting arm 203 to the maximum distance B from its edge to the vertical midline is greater than 5: 1; the ratio of the width D of the spring connecting arm to the thickness E of the spring connecting arm is not less than 2: 1; a second connecting groove is formed in the movable portion 202, and the second connecting groove is connected with the other end of the elastic connecting arm 203.

Based on the above scheme, when the spring anti-shake system is used, the fixing portion 201 of the anti-shake spring 2 is connected with the positioning seat 101, the movable portion 202 of the anti-shake spring 2 is connected with the sensor carrier 301, when the sensor carrier 301 moves, the movable portion 202 of the anti-shake spring 2 can move along with the sensor carrier 301, the fixing portion 201 is fixedly connected with the positioning seat 101, the fixing portion 201 cannot move along with the elastic connecting arm 203 because the elastic connecting arm 203 is elastic and deformable, so that the movable connection between the sensor carrier 301 and the positioning seat 101 is realized, and because of the elastic action of the elastic connecting arm 203, when the sensor carrier 301 is not stressed, the elastic connecting arm 203 can recover to the shape to drive the sensor carrier 301 to reset, so that the spring anti-shake system is simple and convenient; furthermore, when the device is dropped, due to the elasticity of the elastic connecting arm 203, the sensor carrier 301 can be given a sufficient cushioning effect, so that the device has more resistance to dropping.

Preferably, in a group of the anti-shake springs, the ratio of the width D of one anti-shake spring to the width D of the other anti-shake spring is not less than 10: 9; therefore, the anti-shake spring system can compensate the elasticity difference of other components in different directions, and achieves better anti-shake effect.

Referring to fig. 8, as a preferred scheme, the spring anti-shake system is provided with a center line, and an included angle between a vertical center line of each anti-shake spring 2 and the center line is less than 10 °; the central line and the vertical central line of the anti-shake spring 2 form a reference plane, and the minimum included angle A between the plane where the anti-shake spring 2 is located and the reference plane is less than 20 degrees. Therefore, the anti-shake spring 2 is designed to effectively reduce the spring coefficient of the flipping roll (i.e. the direction of rotation around the optical axis), and compensate for the larger spring coefficient of the flipping roll caused by other elastic components (e.g. the elastic part in the sensor circuit board), so as to achieve better anti-shake and power saving effects of the flipping roll.

Preferably, one side of the fixing portion 201 is provided with a first positioning groove, and the other side thereof is provided with a first clamping groove. Specifically, through first constant head tank, can be connected the better agreeing with of fixed part 201 and positioning seat 101 of anti-shake spring 2, and first draw-in groove can be blocked and establish on positioning seat 101 for fixed part 201 connects more firmly.

Preferably, one side of the movable portion 202 is provided with a second positioning slot on the same side as the first positioning slot, and the other side of the movable portion is provided with a second locking slot on the same side as the first locking slot. Specifically, through the second positioning groove, the movable portion 202 of the anti-shake spring 2 can be better fitted and connected with the sensor carrier 301, and the second clamping groove can be clamped on the sensor carrier 301, so that the movable portion 202 is connected more firmly.

Preferably, the elastic connecting arm 203 is a rod-shaped elastic connecting arm 203. Specifically, the rod-shaped elastic connecting arm 203 is more tough and is not easy to break.

Referring to fig. 3, the elastic connecting arms 203 are preferably wavy elastic connecting arms 203. Specifically, the wavy elastic connecting arm 203 has more elasticity and stronger drop resistance.

Preferably, the elastic connecting arms 203 are sheet-shaped elastic connecting arms 203. Specifically, the sheet-shaped elastic connecting arm 203 can adapt to a narrow installation space, and is more flexible and convenient.

Referring to fig. 4 to 8, the present invention further provides a lens anti-shake focusing apparatus using the anti-shake spring 2 system, including:

the fixing structure 1, wherein the fixing structure 1 comprises a positioning seat 101 and a shell 102; the positioning seat 101 is installed inside the outer shell 102;

the fixing part 201 of each anti-shake spring 2 is connected with the positioning seat 101;

the anti-shake structure 3 comprises a sensor carrier 301, at least one group of anti-shake magnets 303 and at least two groups of anti-shake coils 302; the anti-shake magnet 303 is fixed inside the housing 102; the sensor carrier 301 is connected with the movable part 202 of the anti-shake spring 2; the anti-shake coil 302 is mounted on the sensor carrier 301, and the anti-shake coil 302 and the anti-shake magnet 303 are arranged correspondingly; the anti-shake coil 302 is electrically connected with the conductive structure;

a focusing structure 4, the focusing structure 4 comprising a lens carrier 401, at least one set of focusing magnets 403 and at least one set of focusing coils 402; the focusing magnet 403 is fixedly arranged on the inner wall of the shell 102; the lens carrier 401 is disposed on the sensor carrier 301, and the lens carrier 401 has at least one degree of freedom of spatial displacement; the focusing coil 402 is disposed on the periphery of the lens carrier 401, and the focusing coil 402 is disposed opposite to the focusing magnet 403; the focusing coil 402 is electrically connected with the conductive structure;

a lens 6 disposed on the lens carrier 401; the included angle between the vertical central line of the elastic connecting arm 203 and the optical axis of the lens 6 is less than 10 degrees;

the module shell 7 is connected with the bottom end of the fixed structure 1;

the sensor circuit board 8 is mounted inside the module shell 7, and the sensor circuit board 8 is respectively connected with the fixed structure 1 and the anti-shake structure 3;

and the image sensor 9, wherein the image sensor 9 is arranged on the sensor circuit board 8.

Based on above-mentioned scheme, when shooing anti-shake: the anti-shake coil 302 is electrified, the anti-shake structure 3 is driven to move by the ampere force generated by the electrified anti-shake coil 302 in the magnetic field of the anti-shake magnet 303, the sensor carrier 301 is driven to move, namely, the lens carrier 401 and the lens 6 are driven to move, and the current direction and the magnitude of the anti-shake coil 302 are controlled by combining an external or internal control driving chip, so that the angle and the displacement of the anti-shake structure 3 are controlled, the vibration interference during shooting is counteracted to eliminate the image blur, and the quality of the image or the film is improved; when the shooting is finished, the anti-shake coil 302 is powered off, and the anti-shake structure 3 is reset due to the anti-shake spring 2. When shooting is focused: the focusing structure 4 is driven by the ampere force generated by the electrified focusing coil 402 in the magnetic field of the focusing magnet 403, and the current direction and the magnitude of the focusing coil 402 are controlled by combining with an external control driving chip, so that the displacement of the lens carrier 401 is controlled, and the automatic focusing function of the lens 6 is realized.

As a preferred scheme, a conductive structure is arranged on the positioning seat 101, the anti-shake spring 2 is made of a conductive material, one end of the anti-shake spring 2 is electrically connected with the anti-shake coil 302 set, and the other end of the anti-shake spring is connected with the conductive structure in the fixing structure 1. Specifically, directly be connected anti-shake coil 302 and conducting structure through anti-shake spring 2, guarantee the use of device promptly, need not connect anti-shake coil 302 and conducting structure with other parts again, simplified the inner structure of device.

Preferably, the housing 102 has a rectangular structure, and at least two side plates of the housing 102 are provided with grooves 103, wherein each group of the anti-shake magnets 303 is correspondingly disposed on an inner wall of a bottom surface of one of the grooves 103, and each group of the focusing magnets 403 is correspondingly disposed on an inner wall of a side surface of one of the grooves 103. Specifically, the groove 103 can effectively reduce the volume of the motor and the magnet and store other parts, such as a control driving chip and a vibration sensor, thereby saving space and reducing the cost of the magnet.

Preferably, the lens carrier comprises at least one group of focusing springs 5, the focusing springs 5 comprise two parallel spring pieces 501, and the two parallel spring pieces 501 are respectively arranged above and below the lens carrier 401. Specifically, the parallel spring piece 501 can prevent the lens carrier 401 from colliding with the housing 102 during focusing, so as to achieve a good buffering effect, and reset the lens carrier 401 after shooting.

Preferably, the housing 102 has a rectangular structure, the anti-shake springs 2 have a sheet structure, and the four anti-shake springs 2 are respectively mounted at four corners of the housing 102. Specifically, set up anti-shake spring 2 in four corners department easy to assemble, and even atress, promote the anti-shake effect.

Preferably, the sensor further comprises an optical filter 10, and the optical filter 10 is connected to the bottom surface of the sensor carrier 301.

Preferably, the optical axis of the lens is consistent with the central line of the spring system.

To sum up, the preferred embodiment of the present invention provides a spring anti-shake system and a lens anti-shake focusing apparatus using the same, which are compared with the prior art:

(1) the fixed part 201 and the movable part 202 are connected by the elastic connecting arm 203, so that the multi-axis freedom degree can be conveniently realized in the camera module; therefore, the spring coefficient and the anti-shake power consumption are also reduced;

(2) the anti-shake spring 2 system is provided with the fixing part 201 which can be used for connecting the fixing structure 1 in the camera module, so that under the condition of not influencing the degree of freedom of the movable part 202, the stability and the falling resistance of the whole circuit board structure are ensured, and the reliability in falling is further improved;

(3) the lens anti-shake focusing device does not need complex production, such as excessive laser cutting; a complex assembly process is not needed, so that the production cost and the reject ratio are reduced, the production efficiency is improved, and the production cost is reduced;

(4) the invention fully utilizes the limited space of the device, simplifies the size structure and reduces the cost.

(5) The spring system of the invention can effectively reduce the spring coefficient of the turning shaft, and can also compensate the larger spring coefficient of the turning shaft caused by other elastic components (such as an elastic part in a sensor circuit board), thereby achieving the effects of better anti-shake and more electricity saving of the turning shaft.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.