Ball type anti-shake motor and electronic equipment

Abstract

The invention relates to the technical field of camera shooting, and discloses a ball type anti-shake motor and electronic equipment. The ball type anti-shake motor comprises a circuit board arranged on the side wall of a base, a first detection unit comprises a first emitting polar plate and a first receiving polar plate which are arranged on the circuit board, and a first floating polar plate arranged on the side face of a first mover, and the first detection unit is used for detecting the movement condition of the first mover in the focusing direction; the second detection unit comprises a second floating polar plate connected with the first floating polar plate and a second receiving polar plate arranged on the second mover, the second floating polar plate and the second receiving polar plate are oppositely arranged, and the second detection unit is used for detecting the movement condition of the second mover in the shaking direction. An elastic sheet structure is electrically connected with the circuit board, and the elastic sheet structure is used for limiting the second mover in the focusing direction; and the second receiving polar plate is electrically connected with the elastic sheet structure so as to realize the connection between the second detection unit and the circuit board.

Description

Technical Field

[0001] The present invention relates to the field of camera technology, and particularly to a ball-type anti-shake motor and an electronic device. Background Art

[0002] The ball-type anti-shake motor drives a ball to roll in a rolling groove provided on a mover through electromagnetic force, and then drives the mover to move, so as to offset in real time the displacement deviation caused by external vibration, thereby achieving focusing and optical anti-shake.

[0003] The inventor found that the current ball-type anti-shake motor has at least the following drawbacks: using the ball as the transmission mechanism of the motor results in the separate arrangement of the mover and the circuit board inside the motor. For components that need to be electrically connected, such as sensors or coils, if they are arranged on the mover, additional wire circuits need to be designed, and the additionally designed wire circuits even affect the movement of the mover. To avoid the additional design of wire circuits, currently, the magnetic field detection method is usually used to determine the movement of the mover. However, the magnetic field detection method is easily affected by the environment, resulting in poor detection effects. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a ball-type anti-shake motor and an electronic device. By connecting the elastic sheet structure that limits the second mover to the circuit board, and then realizing the electrical connection of the receiving electrode plate of the second detection unit through the elastic sheet structure, the capacitive displacement detection of the ball-type anti-shake motor is realized, and the displacement detection accuracy is improved while the detection cost is reduced.

[0005] To solve the above technical problems, the embodiments of the present invention provide a ball-type anti-shake motor, including: a first mover, a second mover, a first ball, a second ball, a first detection unit, a second detection unit, a circuit board, and a base; the first mover makes a relative displacement with the base in the focusing direction by using the first ball; the second mover makes a relative displacement with the base in the shaking direction by using the second ball; wherein, the shaking direction is perpendicular to the focusing direction; the circuit board is arranged on the side wall of the base; the first detection unit includes a first transmitting electrode plate and a first receiving electrode plate arranged on the circuit board, and a first floating electrode plate arranged on the side surface of the first mover, and the first detection unit is used for detecting the movement of the first mover; the second detection unit includes: a second floating electrode plate connected to the first floating electrode plate, and a second receiving electrode plate arranged on the second mover, the second floating electrode plate and the second receiving electrode plate are arranged opposite to each other, and the second detection unit is used for detecting the movement of the second mover; the ball-type anti-shake motor further includes: an elastic sheet structure electrically connected to the circuit board, the elastic sheet structure is used for limiting the second mover in the focusing direction; the second receiving electrode plate is electrically connected to the elastic sheet structure.

[0006] An embodiment of the present invention further provides an electronic device, including the above-mentioned ball-type anti-shake motor.

[0007] Compared with the prior art, in the embodiment of the present invention, the first detection unit includes a first transmitting electrode plate and a first receiving electrode plate disposed on the circuit board, and a first floating electrode plate disposed on the side of the first mover. The first detection unit is used to detect the movement of the first mover in the focusing direction. The second detection unit includes: a second floating electrode plate connected to the first floating electrode plate, and a second receiving electrode plate disposed on the second mover. The second floating electrode plate and the second receiving electrode plate are disposed opposite to each other. The second detection unit is used to detect the movement of the second mover in the jitter direction. There is a shrapnel structure electrically connected to the circuit board, and the shrapnel structure is used to limit the second mover in the focusing direction; the second receiving electrode plate is electrically connected to the shrapnel structure. At the same time, the second floating electrode plate and the first floating electrode plate have the same electrical signal, forming a potential difference between the second floating electrode plate and the second receiving electrode plate, and further forming a capacitance structure for detecting the movement of the second mover, indirectly realizing the connection between the second detection unit and the circuit board. It realizes the capacitive displacement detection of the ball-type anti-shake motor, improves the displacement detection accuracy and reduces the detection cost at the same time.

[0008] In addition, the second floating electrode plate is disposed at the bottom of the first mover, the second receiving electrode plate is disposed at the bottom of the second mover, and the second floating electrode plate and the second receiving electrode plate are disposed opposite to each other.

[0009] In addition, the second receiving electrode plate includes: an X-axis receiving electrode plate and a Y-axis receiving electrode plate. Wherein, the second floating electrode plate and the X-axis receiving electrode plate cooperate to detect the moving distance of the second mover in the first direction, and the second floating electrode plate and the Y-axis receiving electrode plate cooperate to detect the moving distance of the second mover in the second direction. The first direction and the second direction are perpendicular to each other; the X-axis receiving electrode plate and the Y-axis receiving electrode plate are respectively connected to different shrapnel structures.

[0010] In addition, the number of both the X-axis receiving electrode plate and the Y-axis receiving electrode plate is two; the number of the shrapnel structures is four, and the two X-axis receiving electrode plates and the two Y-axis receiving electrode plates are respectively connected to different shrapnel structures.

[0011] In addition, the four shrapnel structures are respectively disposed at the four top corners of the quadrangular prism structure formed by the circuit board, and the four shrapnel structures are in the same plane.

[0012] In addition, the second floating electrode plate includes: an X-axis floating electrode plate, and a Y-axis floating electrode plate connected to the X-axis floating electrode plate; the X-axis floating electrode plate and the X-axis receiving electrode plate are disposed opposite to each other, and the Y-axis floating electrode plate and the Y-axis receiving electrode plate are disposed opposite to each other.

[0013] In addition, the ball-type anti-shake motor further includes: a driving unit; the driving unit includes: a first driving magnet disposed on the first mover, and a first driving coil disposed on the base, the first driving magnet and the first driving coil being disposed opposite to each other for driving the first mover to move in the focusing direction; the driving unit includes: a second driving magnet disposed on the second mover, and a second driving coil disposed on the base, the second driving magnet and the second driving coil being disposed opposite to each other for driving the second mover to move in the shaking direction.

[0014] In addition, the number of the first receiving plates is two, and the two first receiving plates are sequentially disposed in the focusing direction.

[0015] In addition, the ball-type anti-shake motor further includes: a gland fitting the second mover; the gland abuts against the second mover in the focusing direction, and the gland cooperates with the elastic piece structure to limit the movement of the second mover in the focusing direction. Description of the Drawings

[0016] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the figures do not constitute a proportional limitation.

[0017] Figure 1 is an exploded structural schematic diagram of the ball-type anti-shake motor according to an embodiment of the present solution;

[0018] Figure 2 is a structural schematic diagram of the combination of the circuit board and the first mover in the ball-type anti-shake motor according to an embodiment of the present solution;

[0019] Figure 3 is an independent structural schematic diagram of the second mover in the ball-type anti-shake motor according to an embodiment of the present solution;

[0020] Figure 4 is a structural schematic diagram of the first detection unit in the ball-type anti-shake motor according to an embodiment of the present solution;

[0021] Figure 5 is a structural schematic diagram of the second detection unit in the ball-type anti-shake motor according to an embodiment of the present solution;

[0022] Figure 6 is a top-view structural schematic diagram of the combination of the circuit board and the first mover in the ball-type anti-shake motor according to an embodiment of the present solution;

[0023] Figure 7It is a top - view structural schematic diagram of the combination of the circuit board and the second mover in the ball - type anti - shake motor according to an embodiment of the present solution;

[0024] Figure 8 It is a schematic diagram of relevant parameters of the second floating plate and the second receiving plate in the ball - type anti - shake motor according to an embodiment of the present solution;

[0025] Figure 9 It is a structural schematic diagram of the combination of the second mover and the gland in the ball - type anti - shake motor according to an embodiment of the present solution. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will elaborate on each embodiment of the present invention with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that in each embodiment of the present invention, many technical details are presented to help readers better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can still be implemented.

[0027] The division of the following embodiments is for convenience of description and should not constitute any limitation on the specific implementation manners of the present invention. The various embodiments can be combined and cross - referenced with each other on the premise of no contradiction.

[0028] The embodiments of the present invention relate to a ball - type anti - shake motor. As Figure 1 shown, the ball - type anti - shake motor includes: a circuit board 1, a base 2, a first mover 31, a second mover 32, a first ball 41, a second ball 42, a first detection unit, and a second detection unit; the first mover 31 makes a relative displacement with the base 2 in the focusing direction by using the first ball 41; the second mover 32 makes a relative displacement with the base 2 in the jitter direction by using the second ball 42; wherein, the jitter direction is perpendicular to the focusing direction; the circuit board 1 is arranged on the side wall of the base 2. As Figure 2 shown, the first detection unit includes a first transmitting plate 52 and a first receiving plate 53 arranged on the circuit board 1, and as Figure 3 shown, a first floating plate 51 arranged on the side of the first mover 31 ( Figure 3 marked by the dotted line shown), the first detection unit is used to detect the movement of the first mover 31; the second detection unit includes: a second floating plate connected to the first floating plate, and a second receiving plate arranged on the second mover, the second floating plate and the second receiving plate are arranged opposite to each other, the second detection unit is used to detect the movement of the second mover; the ball - type anti - shake motor further includes: a shrapnel structure 9 electrically connected to the circuit board, the shrapnel structure 9 is used to limit the second mover 32 in the focusing direction; the second receiving plate is electrically connected to the shrapnel structure 9.

[0029] In the embodiment of the present invention, compared with the prior art, the first detection unit includes a first emission electrode plate and a first reception electrode plate disposed on a circuit board, and a first floating electrode plate disposed on the side of the first mover. The first detection unit is used to detect the movement of the first mover in the focusing direction. The second detection unit includes: a second floating electrode plate connected to the first floating electrode plate, and a second reception electrode plate disposed on the second mover. The second floating electrode plate and the second reception electrode plate are disposed opposite to each other. The second detection unit is used to detect the movement of the second mover in the jitter direction. There is a shrapnel structure electrically connected to the circuit board. The shrapnel structure is used to limit the second mover in the focusing direction; the second reception electrode plate is electrically connected to the shrapnel structure. At the same time, the second floating electrode plate and the first floating electrode plate have the same electrical signal, forming a potential difference between the second floating electrode plate and the second reception electrode plate, and further forming a capacitance structure for detecting the movement of the second mover, indirectly realizing the connection between the second detection unit and the circuit board. The capacitive displacement detection of the ball-type anti-shake motor is realized, and the displacement detection accuracy is improved while the detection cost is reduced.

[0030] The structures of the first detection unit and the second detection unit will be described separately below:

[0031] As Figures 2 to 3 shown, the first detection unit includes: a first floating electrode plate 51 disposed on the first mover 31, and a first emission electrode plate 52 and a first reception electrode plate 53 disposed on the circuit board 1; the first floating electrode plate 51 and the first emission electrode plate 52 are disposed opposite to each other in a direction perpendicular to the focusing direction, and the first floating electrode plate 51 and the first reception electrode plate 53 are disposed opposite to each other; when the first mover 31 moves in the focusing direction, the facing area between the first floating electrode plate 51 and the first reception electrode plate 53 changes, and the facing area between the first floating electrode plate 51 and the first emission electrode plate 52 always remains unchanged.

[0032] The capacitance formed by the first floating electrode plate 51, the first emission electrode plate 52, and the first reception electrode plate 53 can be regarded as the capacitance C formed by the first emission electrode plate 52 and the first floating electrode plate 51 11 , and the capacitance C formed by the first floating electrode plate 51 and the first reception electrode plate 53 12 in series equivalent sum Each formed capacitance refers to the physical formula of a parallel plate capacitor: C = εS / 4πkd; where ε represents the dielectric constant of the medium, which is determined by the medium between the electrode plates, such as air, water, etc.; k represents the electrostatic constant, also known as the Coulomb constant, indicating that two point charges with a charge of 1C each in a vacuum, when the two point charges are 1m apart, the magnitude of the force between them is 8.987551×109N, that is, k = 8.987551×109N·m 2 / C; S represents the facing area (projection area) of the two plates; d represents the perpendicular distance between the two plates. Therefore, when the facing area between the first floating plate 51 and the first emitting plate 52 remains constant, the capacitance signal changes according to the change in the facing area between the first floating plate 51 and the first receiving plate 53. Since the change in the facing area between the first floating plate 51 and the first receiving plate 53 is related to the moving distance of the first mover in the focusing direction, the moving distance of the first mover in the focusing direction can be obtained based on the change in the capacitance signal.

[0033] The number of the first receiving plates 53 in the first detection unit is two; the two first receiving plates 53 are arranged in sequence in the focusing direction; when the first mover 31 moves in the focusing direction, the first change amount of the facing area between the first floating plate 51 and one of the first receiving plates 53 is equal to the second change amount of the facing area between the first floating plate 51 and the other first receiving plate 53. That is, the decrease amount of the facing area between the first floating plate and one of the first receiving plates is the same as the increase amount of the facing area between the first floating plate and the other first receiving plate, or the increase amount of the facing area between the first floating plate and one of the first receiving plates is the same as the decrease amount of the facing area between the first floating plate and the other first receiving plate. Such a design facilitates subsequent differential calculation of the capacitance signal for processing such as correcting or denoising the capacitance signal, eliminating the noise that affects the accuracy of the calculation result caused by environmental factors or human operation factors, etc., and at the same time improving the sensitivity of the control of the lens position movement. The differential calculation formula can be: magnification * (CX1 - CX2) / (CX1 + CX2); where, CX1 represents the capacitance signal formed by the first floating plate and one of the first receiving plates, and CX2 represents the capacitance signal formed by the first floating plate and the other first receiving plate.

[0034] The capacitance structure jointly composed of the first floating plate 51, the first emitting plate 52 and the two first receiving plates 53 is as Figure 4As shown, the size of the first floating plate 51 is smaller than the size of the area jointly covered by the first emitting plate 52 and the two first receiving plates 53, ensuring that during the process of the first mover driving the first floating plate 51 to move in the focusing direction, the first floating plate 51 is always within the area jointly covered by the first emitting plate 52 and the two first receiving plates 53. That is, during the movement of the first floating plate 51, the edge of the first floating plate 51 will never exceed the edge of the first emitting plate 52, and the edge of the first floating plate 51 will also not exceed the edge of the first receiving plate 53. The widest width H1 of the first floating plate 51 in the focusing direction is smaller than the width H2 of the first emitting plate 52 in the focusing direction, and H2 - H1 is greater than or equal to the maximum travel value of the first mover in the focusing direction. The length L1 of the first floating plate 51 perpendicular to the focusing direction is smaller than the total length L2 of the area jointly covered by the first emitting plate 52 and the two first receiving plates 53.

[0035] Regarding the second detection unit, it includes: a second floating plate connected to the first floating plate, and a second receiving plate provided on the second mover. The second floating plate and the second receiving plate are arranged opposite to each other. The second detection unit is used to detect the movement of the second mover. The second floating plate is arranged at the bottom of the first mover, and the second receiving plate is arranged at the bottom of the second mover, and the second floating plate and the second receiving plate are arranged opposite to each other.

[0036] As Figure 5 shown, the second receiving plate includes: an X-axis receiving plate 612 and a Y-axis receiving plate 622. Among them, the X-axis floating plate 611 in the second floating plate cooperates with the X-axis receiving plate 612 to detect the moving distance of the second mover in the first direction (X-axis direction), and the Y-axis floating plate 621 in the second floating plate cooperates with the Y-axis receiving plate 622 to detect the moving distance of the second mover in the second direction (Y-axis direction). The first direction and the second direction are perpendicular to each other; since it is necessary to collect the signals generated by the X-axis receiving plate 612 and the Y-axis receiving plate 622 of the second detection unit respectively, therefore, the X-axis receiving plate 612 and the Y-axis receiving plate 622 are respectively connected to different said elastic sheet structures 9.

[0037] In addition, as Figure 6As shown in the figure, it is the combined structure of the circuit board 1 and the first mover 31. The X-axis floating plate 611 and the Y-axis floating plate 621 are both arranged at the bottom of the first mover, and the X-axis floating plate 611 and the Y-axis floating plate 621 are in the same plane. The X-axis floating plate 611 and the Y-axis floating plate 621 are connected by sheet metal or wire circuits. At the same time, the X-axis floating plate 611 or the Y-axis floating plate 621 close to the first floating plate is connected to the first floating plate, so that the X-axis floating plate 611 and the Y-axis floating plate 621 carry the same electrical signal as the first floating plate. The second detection unit can construct a capacitive structure by means of the emitting plate of the first detection unit, so that there is no need to separately set the emitting plate connected to the circuit board in the second detection unit. The capacitive detection structure in the X-axis direction in the second detection unit can be equivalent to: the capacitance C formed by the first emitting plate 52 and the first floating plate 51 11 , and the capacitance C formed by the X-axis floating plate 611 and the X-axis receiving plate 612 21 The sum, equivalent capacitance Similarly, the capacitive detection structure in the Y-axis direction in the second detection unit can be equivalent to: the capacitance C formed by the first emitting plate 52 and the first floating plate 51 11 , and the capacitance C formed by the Y-axis floating plate 621 and the Y-axis receiving plate 622 22 The sum, equivalent capacitance

[0038] As Figure 7 shown in the figure, it is the combined structure of the circuit board 1 and the second mover 32. The X-axis receiving plate 612 and the Y-axis receiving plate 622 are both arranged on the bottom surface of the second mover. The number of the X-axis receiving plate 612 and the Y-axis receiving plate 622 is two; the number of the shrapnel structures 9 is four, and the two X-axis receiving plates 612 and the two Y-axis receiving plates 622 are respectively connected to different shrapnel structures 9. The purpose of setting two X-axis receiving plates 612 and two Y-axis receiving plates 622 is the same as that of setting two first receiving plates, which is to perform processing such as correcting or denoising the capacitance signal, etc., to eliminate the noise that affects the calculation result accuracy caused by environmental factors or human operation factors, etc., and at the same time improve the sensitivity of the position movement control. The four shrapnel structures are respectively arranged at the four top corners of the quadrangular prism structure composed of the circuit board, and the four shrapnel structures are in the same plane.

[0039] As Figure 8 shown in the figure, it is the structural schematic diagram of the X-axis floating plate 611 and the X-axis receiving plate 612, and the Y-axis floating plate 621 and the Y-axis receiving plate 622. When the second mover moves along the first direction ( Figure 8When moving in the left - right direction (as shown), the edge of the Y - axis floating plate 621 will never exceed the edge of the Y - axis receiving plate 622, that is, a is greater than the maximum stroke of the second mover in the first direction. Similarly, when the second mover moves in the second direction ( Figure 8 as shown in the up - down direction), the edge of the X - axis floating plate 611 will never exceed the edge of the X - axis receiving plate 612, that is, b is greater than the maximum stroke of the second mover in the second direction. Such a setting can ensure that the movement of the second mover in the first direction will not affect the capacitance signal generated by the Y - axis floating plate 621 and the Y - axis receiving plate 622, and the movement of the second mover in the second direction will not affect the capacitance signal generated by the X - axis floating plate 611 and the X - axis receiving plate 612, so that the detection in the first direction and the second direction will not cause crosstalk, improving the accuracy of detection.

[0040] In addition, when embedding the second receiving plate or the lead - out point of the wire connected to the second receiving plate in the plastic part of the motor, the position of the lead - out point is usually directly below the elastic piece structure. As Figure 9 shown, a welding point 91 is reserved at the position directly below each elastic piece structure, which is convenient for realizing the electrical connection between the elastic piece structure and the second receiving plate.

[0041] In addition, as Figure 3 shown, the ball - type anti - shake motor includes a driving unit, which includes a first driving magnet 101 arranged on the first mover and a first driving coil arranged on the base. The first driving magnet 101 and the first driving coil are arranged opposite to each other and are used to drive the first mover to move in the focusing direction. The first driving magnet 101 forms a fixed magnetic field. The first driving coil is connected to the circuit board and is powered and controlled through an external circuit and an IC. After the first driving coil is powered on, an induced magnetic field is generated, and the interaction between the induced magnetic field and the fixed magnetic field formed by the first driving magnet 101 generates a Lorentz force. Since the first driving coil is fixed on the base 2 and cannot move, the Lorentz force is fed back to the first driving magnet 101. Due to the existence of the first ball, the carrier of the first driving magnet 101, the first mover 31, can move relative to the base, thus realizing the driving of the first mover. By changing the current in the first driving coil, the magnitude of the Lorentz force can be controlled, and by changing the force on the first mover, the moving distance can be controlled.

[0042] Similarly, regarding the driving of the second mover, as Figure 9 shown, the driving unit includes a second driving magnet 102 arranged on the second mover and a second driving coil arranged on the base. The second driving magnet 102 and the second driving coil are arranged opposite to each other and are used to drive the second mover to move in the shaking direction. The driving principle is the same as that of the driving of the first mover described above.

[0043] The moving direction of the second mover is at least two directions (the first direction and the second direction). Corresponding second driving magnets and corresponding second driving coils are respectively arranged in the two different directions to achieve displacement control in different directions.

[0044] In addition, in order to ensure that the second mover will not be driven by the first mover, so that the second mover only moves in the jitter direction and will not change its displacement in the focusing direction. As Figure 1 shown, the ball-type anti-shake motor further includes: a gland 7 attached to the second mover 32; the gland 7 abuts against the second mover 32 in the focusing direction to limit the movement of the second mover 32 in the focusing direction. A welding point 91 of the elastic sheet structure and the second receiving electrode plate is arranged at a corresponding position of the gland 7, which is convenient for electrically connecting the elastic sheet structure 9 and the second receiving electrode plate through the welding point 91 by means of laser spot welding or the like.

[0045] In addition, as Figure 1 shown, the ball-type anti-shake motor further includes a housing 8 covering the periphery of all component structures, and the housing 8 plays a role in protecting the internal structure of the ball-type anti-shake motor.

[0046] In order to reduce the volume of the ball-type anti-shake motor, the internal components of the ball-type anti-shake motor can be overlapped in the focusing direction. For example, the second mover 32 is arranged inside the first mover 31, that is, the first mover 31 is a hollow frame structure, and the middle area is used to accommodate the lens. The frame surrounds the outside of the second mover 32. Such a structure enables the second mover 32 to overlap with the first mover 31 at least partially in the focusing direction, which can reduce the thickness of the ball-type anti-shake motor in the focusing direction. Similarly, the base 2 overlaps with the first mover 31 at least partially in the focusing direction, which can also reduce the thickness of the ball-type anti-shake motor in the focusing direction. The circuit board 1 is arranged on the side wall of the base 2, which is convenient for the electrical connection between the first detection unit and the second detection unit arranged in the ball-type anti-shake motor. The circuit board 1 can be a flexible printed circuit board FPC, which is more convenient for being attached to the outer surface of the base.

[0047] Another feasible embodiment of the present invention relates to an electronic device, including the ball-type anti-shake motor as described above. The ball-type anti-shake motor is used in cooperation with the lens to collect images and automatically calibrate the vibration of the external environment, improving the quality of image collection.

[0048] Compared with the related technology, the electronic device provided by the embodiment of the present invention is provided with the ball-type anti-shake motor provided by the foregoing embodiment. Therefore, it also has the technical effects provided by the foregoing embodiment, which will not be elaborated herein.

[0049] Those of ordinary skill in the art can understand that the above embodiments are specific embodiments for implementing the present invention, and in actual applications, various changes can be made to them in form and details without departing from the spirit and scope of the present invention.

Claims

1. A ball type anti-shake motor, characterized in that: include: A first mover, a second mover, a first ball, a second ball, a first detection unit, a second detection unit, a circuit board and a base; The first mover uses the first ball to cause relative displacement with the base in the focusing direction; The second mover uses the second ball to make relative displacement with the base in a shaking direction; wherein the shaking direction is perpendicular to the focusing direction; The circuit board is arranged on the side wall of the base; The first detection unit includes a first emitting electrode plate and a first receiving electrode plate arranged on the circuit board, and a first floating electrode plate arranged on the side of the first mover, and the first detection unit is used to detect the movement of the first mover; The second detection unit includes: a second floating electrode plate connected to the first floating electrode plate, and a second receiving electrode plate arranged on the second mover, the second floating electrode plate and the second receiving electrode plate are arranged opposite to each other, and the second detection unit is used to detect the movement of the second mover; The ball-type anti-shake motor further includes: a spring structure electrically connected to the circuit board, the spring structure being used to limit the second mover in the focusing direction; and the second receiving electrode plate being electrically connected to the spring structure.

2. The ball type anti-shake motor according to claim 1, characterized in that: The second floating electrode plate is arranged at the bottom of the first mover, the second receiving electrode plate is arranged at the bottom of the second mover, and the second floating electrode plate and the second receiving electrode plate are arranged opposite to each other.

3. The ball type anti-shake motor according to claim 2, characterized in that: The second receiving electrode plate includes: an X-axis receiving electrode plate and a Y-axis receiving electrode plate, wherein the second floating electrode plate cooperates with the X-axis receiving electrode plate to detect the moving distance of the second mover in the first direction, and the second floating electrode plate cooperates with the Y-axis receiving electrode plate to detect the moving distance of the second mover in the second direction, and the first direction and the second direction are perpendicular; The X-axis receiving electrode plate and the Y-axis receiving electrode plate are respectively connected to different spring structures.

4. The ball type anti-shake motor according to claim 3, characterized in that: The number of the X-axis receiving plates and the number of the Y-axis receiving plates are both two; The number of the spring structures is four, and the two X-axis receiving plates and the two Y-axis receiving plates are connected to different spring structures.

5. The ball type anti-shake motor according to claim 4, characterized in that: The four spring sheet structures are respectively arranged at the four vertices of the quadrangular prism structure formed by the circuit boards, and the four spring sheet structures are in the same plane.

6. The ball type anti-shake motor according to claim 3, characterized in that: The second floating plate comprises: an X-axis floating plate, and a Y-axis floating plate connected to the X-axis floating plate; The X-axis floating plate is disposed opposite to the X-axis receiving plate, and the Y-axis floating plate is disposed opposite to the Y-axis receiving plate.

7. The ball type anti-shake motor according to claim 1, characterized in that: Also includes: Drive unit; The driving unit comprises: a first driving magnet arranged on the first mover, and a first driving coil arranged on the base, wherein the first driving magnet and the first driving coil are arranged opposite to each other and are used to drive the first mover to move in the focusing direction; The driving unit includes: a second driving magnet arranged on the second mover, and a second driving coil arranged on the base, the second driving magnet and the second driving coil are arranged opposite to each other and are used to drive the second mover to move in the shaking direction.

8. The ball type anti-shake motor according to claim 1, characterized in that: The number of the first receiving plates is two, and the two first receiving plates are arranged sequentially in the focusing direction.

9. The ball type anti-shake motor according to any one of claims 1 to 8, characterized in that: Also includes: A gland disposed in close contact with the second mover; The pressure cover abuts against the second mover in the focusing direction, and the pressure cover cooperates with the spring structure to limit the movement of the second mover in the focusing direction.

10. An electronic device, characterized in that: include: A ball type anti-shake motor as claimed in any one of claims 1 to 9.

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