A differential capacitor-type image stabilization motor and electronic device

Abstract

This utility model relates to the field of camera technology and discloses a differential capacitive image stabilization motor and electronic device. The differential capacitive image stabilization motor of this utility model includes: a first carrier, a second carrier, a first detection unit, a second detection unit, a first drive unit, a second drive unit, suspension wires, and a circuit board; the first drive unit drives the first carrier to move in the focusing direction; the second carrier is arranged around the first carrier, and the second drive unit drives the second carrier to move perpendicular to the focusing direction; both the first and second detection units are differential capacitor units composed of a transmitting electrode and at least two receiving electrodes; the image stabilization motor includes four corners, and at least one corner has two suspension wires; each suspension wire is electrically connected to the circuit board, and the suspension wire is electrically connected to the transmitting electrode, receiving electrode, first drive unit, and second drive unit of the first detection unit, or any combination thereof, with at least five suspension wires serving as electrical connectors.

Description

Technical Field

[0001] This utility model relates to the field of camera technology, and in particular to a differential capacitor image stabilization motor and electronic device. Background Technology

[0002] A capacitive motor utilizes a capacitor formed by a transmitting and receiving plate within the motor. Changes in the signal detected by the capacitor provide feedback on the movement of the lens within the motor. To improve detection accuracy, two receiving plates can be used, employing a differential signal method to reduce the influence of environmental factors on the detection results.

[0003] However, for the suspension wire image stabilization motor, since the motor needs to detect movement in both the shaking and focusing directions, and the electrode plate located on the internal first carrier cannot be directly connected to the circuit board, a suspension wire is required to achieve this connection. The number of suspension wires in the suspension wire image stabilization motor is limited, while the number of components within the motor that need to connect to the circuit board far exceeds the number of suspension wires. Therefore, it is impossible to guarantee the detection accuracy of movement in all directions using differential signal detection methods, and thus, the detection accuracy in all directions cannot be guaranteed. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a differential capacitor type image stabilization motor and electronic device, which uses a differential capacitor unit to detect the movement distance of the image stabilization motor in all directions, thereby improving the detection accuracy of the motor vibration direction and the focus direction.

[0005] To address the aforementioned technical problems, embodiments of this utility model provide a differential capacitor image stabilization motor, comprising: a first carrier, a second carrier, a first detection unit, a second detection unit, a first drive unit, a second drive unit, suspension wires, and a circuit board; the first drive unit drives the first carrier to move in the focusing direction; the second carrier surrounds the first carrier, and the second drive unit drives the second carrier to move perpendicular to the focusing direction; both the first and second detection units are differential capacitor units composed of a transmitting electrode and at least two receiving electrodes; the image stabilization motor includes four corners, and at least one corner has two suspension wires; each suspension wire is electrically connected to the circuit board, and each suspension wire is electrically connected to any one or a combination of the transmitting electrode, receiving electrode, first drive unit, and second drive unit of the first detection unit, with at least five suspension wires serving as electrical connectors.

[0006] An embodiment of this utility model also provides an electronic device, including: the above-described differential capacitor anti-shake motor.

[0007] Compared with related technologies, this utility model embodiment uses suspension wires located at the four corners of the image stabilization motor to realize the electrical connection of part of the circuit structure. By increasing the number of suspension wires, that is, setting two suspension wires at at least one corner position, the number of lines available for electrical connection of the circuit structure is increased. With the first detection unit and the second detection unit being differential capacitor units, there are sufficient electrical connection lines, thereby realizing that the movement distance of the image stabilization motor in all directions is detected by differential capacitor units, improving the detection accuracy of the motor shake direction and the focus direction.

[0008] In addition, the differential capacitor anti-shake motor includes: a spring corresponding to the suspension wire; the suspension wire is electrically connected to the transmitting plate of the first detection unit, the receiving plate, the first driving unit, and the second driving unit, or a combination thereof, through the corresponding spring.

[0009] In addition, when two suspension wires are set at the first position of the image stabilization motor and one suspension wire is set at the second position of the image stabilization motor, the two spring pieces corresponding to the two suspension wires at the first position form a first pattern, and the spring piece corresponding to the one suspension wire at the second position forms a second pattern. The first pattern and the second pattern are rotationally symmetrical with respect to the central axis of the focusing direction of the image stabilization motor, wherein the rotational symmetry angle is 90 degrees, 180 degrees or 270 degrees.

[0010] In addition, when the number of suspension wires is five, the first detection unit includes: a first emitting electrode plate disposed on the second carrier and two first receiving electrodes plate disposed on the first carrier; the second detection unit includes: a second emitting electrode plate disposed on the second carrier and a second receiving electrode plate disposed on the circuit board; the first driving unit includes a first driving coil disposed on the first carrier, the first driving coil including: a first current inflow end and a first current outflow end; the second driving unit includes a second driving coil disposed on the circuit board; the five suspension wires are electrically connected to the two first receiving electrodes plate, the first emitting electrode plate, the first current inflow end and the first current outflow end respectively.

[0011] Furthermore, when two suspension wires are provided at the first position of the image stabilization motor and one suspension wire is provided at the second position of the image stabilization motor, one of the suspension wires at the first position is under tension, while the other suspension wire at the first position is not under tension; the suspension wire at the second position is under tension.

[0012] Furthermore, the first stiffness of the suspension wire with tension at the first position is greater than the second stiffness of the suspension wire without tension at the first position.

[0013] Additionally, the first detection unit includes a first emitting electrode plate disposed on the second carrier and two first receiving electrodes plate disposed on the first carrier; the second detection unit includes a second emitting electrode plate disposed on the second carrier and a second receiving electrode plate disposed on a circuit board; the first driving unit includes a first driving coil disposed on the first carrier, the first driving coil including a first current inflow end and a first current outflow end; the second driving unit includes a second driving coil disposed on the second carrier, the second driving coil including a second current inflow end and a second current outflow end; the suspension wire is electrically connected to the two first receiving electrodes plate, the first emitting electrode plate, the first current inflow end, the first current outflow end, the second current inflow end, and the second current outflow end, respectively.

[0014] In addition, when the number of suspension wires is 4N, where N is a natural number greater than 1, the number of suspension wires set at each corner of the anti-shake motor is the same.

[0015] In addition, when the number of suspension wires is 4N, the number of suspension wires with tension at each corner is the same, or all suspension wires have tension. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0017] Figure 1 This is an exploded structural diagram of the differential capacitor anti-shake motor according to the first embodiment of this solution; Figure 2 This is a cross-sectional structural diagram of the differential capacitor anti-shake motor according to the first embodiment of this solution; Figure 3 This is a schematic diagram of the second detection unit structure of the differential capacitor anti-shake motor according to the first embodiment of this solution; Figure 4 This is a schematic diagram of the first detection unit structure of the differential capacitor anti-shake motor according to the first embodiment of this solution; Figure 5 This is a three-dimensional structural diagram of the differential capacitor anti-shake motor according to the first embodiment of this solution; Figure 6 This is a schematic diagram of the circuit connection structure of the first drive unit of the differential capacitor anti-shake motor according to the first embodiment of this solution; Figure 7 This is a schematic diagram of the solder joint structure of the first drive unit of the differential capacitor anti-shake motor according to the first embodiment of this solution; Figure 8 This is a schematic diagram of the circuit connection structure of the first receiving electrode of the differential capacitor anti-shake motor according to the first embodiment of this solution; Figure 9 This is a schematic diagram of the circuit connection structure of the first and second emitter plates of the differential capacitor anti-shake motor according to the first embodiment of this solution; Figure 10 This is a schematic diagram of the circuit board structure of the differential capacitor anti-shake motor according to the first embodiment of this solution; Figure 11 This is a top view schematic diagram of the differential capacitor anti-shake motor according to the second embodiment of this solution; Figure 12 This is a three-dimensional structural diagram of the differential capacitor anti-shake motor according to the second embodiment of this solution.

[0018] Figure label: 1-Lens; 2-Outer shell; 31-First carrier; 32-Second carrier; 4-Strip; 41-Upper strip; 42-Lower strip; 5-Suspension wire; 6-Circuit board; 7-Base; 81-First detection unit; 82-Second detection unit; 811-First transmitting electrode; 812-First receiving electrode; 821-Second transmitting electrode; 822-Second receiving electrode; 8211-X-axis transmitting electrode; 8212-Y-axis transmitting electrode; 8221-X-axis receiving electrode; 8222-Y-axis receiving electrode; 91-First drive coil; 911-Solder joint; 921-X-axis drive coil; 922-Y-axis drive coil; 10-Driver chip; 101 - First position; 102 - Second position. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of this utility model to enable readers to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0020] The division of the following embodiments is for ease of description and should not constitute any limitation on the specific implementation of this utility model. The various embodiments can be combined with or referenced by each other without contradiction.

[0021] The first embodiment of this utility model relates to a differential capacitor anti-shake motor, such as Figure 1 As shown, the system includes a first carrier 31 and a second carrier 32. The second carrier surrounds the first carrier. The first carrier 31 moves the lens 1 in the focusing direction, and the second carrier 32 moves the lens 1 perpendicular to the focusing direction. The first carrier 31 and the second carrier 32 are connected to the base 7 by a suspension wire 5. A circuit board 6 is also provided on the base 7. The second carrier 32 is surrounded by a shell 2, which protects the internal components from direct exposure to the external environment and potential damage.

[0022] like Figure 2 As shown, the differential capacitor image stabilization motor also includes: a first detection unit 81, a second detection unit 82, a first drive unit, and a second drive unit; the first drive unit drives the first carrier 31 to move in the focusing direction; the second drive unit drives the second carrier 32 to move perpendicular to the focusing direction.

[0023] The first detection unit 81 and the second detection unit 82 are both differential capacitor units composed of a transmitting electrode and at least two receiving electrodes. The anti-shake motor includes four corners, and at least one corner has two suspension wires; each suspension wire is electrically connected to the circuit board, and the suspension wire is electrically connected to any one or a combination of the transmitting electrode, receiving electrode, first driving unit, and second driving unit of the first detection unit, with at least five suspension wires serving as electrical connectors.

[0024] Compared with related technologies, this utility model embodiment uses suspension wires located at the four corners of the image stabilization motor to realize the electrical connection of part of the circuit structure. By increasing the number of suspension wires, that is, setting two suspension wires at at least one corner position, the number of lines available for electrical connection of the circuit structure is increased. With the first detection unit and the second detection unit being differential capacitor units, there are sufficient electrical connection lines, thereby realizing that the movement distance of the image stabilization motor in all directions is detected by differential capacitor units, improving the detection accuracy of the motor shake direction and the focus direction.

[0025] The detection principles of the first and second detection units are explained below: The transmitting and receiving plates form a capacitor structure. For ease of calculation, the opposing surfaces of the transmitting and receiving plates are both planar, and the physical formula for a parallel-plate capacitor can be referenced: C = εS / 4πkd; where ε represents the dielectric constant of the medium, determined by the medium between the plates, such as air or water; k represents the electrostatic constant, also known as the Coulomb constant, which indicates that the magnitude of the force between two point charges, each with a charge of 1C, 1m apart in a vacuum is 8.987551 × 10⁻⁶. 9 N, i.e., k = 8.987551 × 109 N·m 2 / C; S represents the area (projected area) of the two plates facing each other; d represents the vertical distance (average value) between the two plates; π represents pi. When the first or second carrier moves, the area between the transmitting and receiving plates changes, resulting in a change in the capacitance signal. The changing capacitance signal is correlated with the moving distance of the first or second carrier, and the moving distance of the first and second carriers can be determined using the capacitance signal.

[0026] Both the first and second detection units are differential capacitor units, such as Figure 2 As shown, the first detection unit 81 includes a first emitting electrode plate 811 disposed on the second carrier 32 and two first receiving electrodes plate 812 disposed on the first carrier 31. The second detection unit 82 includes a second emitting electrode plate 821 disposed on the second carrier 32 and a second receiving electrode plate 822 disposed on the circuit board. Since the second carrier 32 moves in both the X-axis and Y-axis directions perpendicular to the focusing direction (Z-axis direction), the second emitting electrode plate 821 includes an X-axis emitting electrode plate 8211 and a Y-axis emitting electrode plate 8212. Two X-axis receiving electrodes plate 8221 are disposed corresponding to the X-axis emitting electrode plate 8211, and two Y-axis receiving electrodes plate 8222 are disposed corresponding to the Y-axis emitting electrode plate 8212.

[0027] like Figure 4 The diagram shows the relative positions of the first emitting plate 811 and the first receiving plate 812. Assume the capacitances of the first emitting plate 811 and the two first receiving plates 812 are C1, C2, and C3, respectively. AF and C2 AF When the first carrier moves towards the positive Z-axis, C1 AF Increase, C2 AF The difference is reduced by obtaining the differential capacitance result in the focusing direction through differential calculation. The differential capacitance result was determined through calibration. The correspondence between the distance moved in the focusing direction and the distance moved in the focusing direction.

[0028] Similarly, such as Figure 3 The diagram shows the relative positions of the second emitting electrode and the second receiving electrode. Assume the capacitances of the X-axis emitting electrode 8211 and the X-axis receiving electrode 8221 are C1 and C2, respectively. X and C2 X The differential capacitance in the X-axis direction is obtained through differential calculation. The capacitances of the Y-axis emitting electrode 8212 and the Y-axis receiving electrode 8222 are C1 and C2, respectively. Y and C2 Y The differential capacitance in the Y-axis direction is obtained through differential calculation. The X-axis and Y-axis displacements are detected using the differential capacitance results described above.

[0029] The triaxial displacement detection uses differential capacitor units, which can offset signal drift caused by external factors such as temperature-induced changes in the distance between the plates, thus improving detection accuracy.

[0030] To avoid crosstalk between different capacitance detection units caused by three-axis movement, the positions and dimensions of each electrode can be limited. For example... Figure 3 As shown, assuming the motor is in its initial state, the distance between the upper edge of the X-axis emitting electrode 8211 and the upper edge of the X-axis receiving electrode 8221 is b1; the distance between the right edge of the X-axis emitting electrode 8211 and the right edge of one of the X-axis receiving electrodes 8221 is b2; the distance between the lower edge of the X-axis emitting electrode 8211 and the lower edge of the X-axis receiving electrode 8221 is b3; and the distance between the left edge of the X-axis emitting electrode 8211 and the left edge of the other X-axis receiving electrode 8221 is b4. The distance between the upper edge of the Y-axis emitting electrode 8212 and the upper edge of one of the Y-axis receiving electrodes 8222 is c1; the distance between the right edge of the Y-axis emitting electrode 8212 and the right edge of the Y-axis receiving electrode 8222 is c2; the distance between the lower edge of the Y-axis emitting electrode 8212 and the lower edge of the other Y-axis receiving electrode 8222 is c3; and the distance between the left edge of the Y-axis emitting electrode 8212 and the left edge of the Y-axis receiving electrode 8222 is c4. If the second mover moves within a range of -L to L in both the X and Y axes, and the initial state of the motor is 0, then b1, b2, b3, b4, c1, c2, c3, and c4 must all be greater than L. This ensures that when the second carrier moves in the X-axis direction, the area between the Y-axis emitting plate 8212 and the Y-axis receiving plate 8222 remains unchanged, and only the area between the X-axis emitting plate 8211 and the X-axis receiving plate 8221 changes. Conversely, when the second carrier moves in the Y-axis direction, the area between the X-axis emitting plate 8211 and the X-axis receiving plate 8221 remains unchanged, and only the area between the Y-axis emitting plate 8212 and the Y-axis receiving plate 8222 changes.

[0031] When moving in the focus direction, such as Figure 4 As shown, assuming the motor is in its initial state, the distance between the upper edge of the first emitting electrode 811 and the upper edge of one of the first receiving electrodes 812 is d1, and the distance between the lower edge of the first emitting electrode 811 and the lower edge of the other first receiving electrode 812 is d2. If the first carrier moves in the focusing direction (Z-axis direction) from -M to M, and the initial state of the motor is 0, it is necessary to set d1 and d2 to be greater than M to ensure that the facing area between the first emitting electrode 811 and the first receiving electrode 812 always changes when the first carrier moves in the focusing direction (from -M to M).

[0032] In addition, such as Figure 2 As shown, the differential capacitor anti-shake motor includes: spring pieces 4 corresponding one-to-one with the suspension wire 5; the suspension wire 5 is electrically connected to any one or a combination of the transmitting plate and receiving plate of the first detection unit, the first driving unit, and the second driving unit through the corresponding spring pieces 4. When selecting the electrical structure electrically connected to the suspension wire 5, an electrical structure not mounted on the circuit board and not mounted on the base can be selected, specifically an electrical structure mounted on the first carrier or the second carrier. Since the first carrier and the second carrier are separated from the base (or circuit board), and the first carrier and the second carrier are displaced relative to the base (or circuit board), directly connecting the electrical structure on the first carrier and the second carrier to the circuit board using wires may affect the movement of the first carrier and the second carrier, and may easily lead to the risk of wire breakage. Therefore, it is preferable to connect the electrical structure on the first carrier and the second carrier to the suspension wire, which helps to ensure the reliability of the circuit connection.

[0033] The spring pieces connected to the suspension wire include an upper spring piece 41 and a lower spring piece 42. The projection of the upper spring piece toward the base falls on the area where the second carrier is located, facilitating circuit connection with the electrical structure set on the second carrier. The projection of the lower spring piece toward the base falls on the area where the first carrier is located, further facilitating circuit connection with the electrical structure set on the first carrier. When the first carrier moves in the focusing direction, the second carrier does not move in the focusing direction, at which time the spring pieces will deform.

[0034] Additionally, since there are more than four suspension wires, and the stabilization motor only has four corners, at least one corner position requires two suspension wires. For example... Figure 5 As shown, assuming two suspension wires are set at the first position 101 of the image stabilization motor and one suspension wire is set at the second position 102, the two springs corresponding to the two suspension wires at the first position form a first pattern, and the springs corresponding to the one suspension wire at the second position form a second pattern. The first and second patterns are rotationally symmetrical with respect to the central axis of the focusing direction of the image stabilization motor, wherein the rotational symmetry angle is 90 degrees, 180 degrees, or 270 degrees. This design ensures that the spring force received by the first carrier at each angle is balanced when the first carrier moves in the focusing direction, avoiding problems such as tilting of the first carrier due to uneven force.

[0035] The following describes the electrical connections of each electrical structure in the embodiments of this application, assuming five suspension wires. With five suspension wires, the first detection unit includes a first emitting electrode plate disposed on the second carrier and two first receiving electrodes plate disposed on the first carrier; the second detection unit includes a second emitting electrode plate disposed on the second carrier and a second receiving electrode plate disposed on the circuit board; the first driving unit includes a first driving coil disposed on the first carrier, the first driving coil including a first current inflow terminal and a first current outflow terminal; the second driving unit includes a second driving coil disposed on the circuit board; the five suspension wires are electrically connected to the two first receiving electrodes plate, the first emitting electrode plate, the first current inflow terminal, and the first current outflow terminal, respectively.

[0036] like Figures 6 to 10 To set up exploded structure diagrams for five suspended wire cases, such as Figure 6 As shown, there are two first drive coils 91, which are arranged on opposite sides of the first carrier. The two first drive coils are connected by a wire or by the copper wire within the coil itself. One of the first current inflow end and the first current outflow end is located on one first drive coil, and the other is located on the other first drive coil. The first current inflow end is connected to the first suspension wire, and the first current outflow end is connected to the second suspension wire. When the first current inflow end and the first current outflow end are connected to the spring contact, they can be connected by means of... Figure 7 The solder joint 911 shown is used for welding with the spring sheet.

[0037] like Figure 8 The diagram shows the structure of two first receiving plates 812, which are connected to the third and fourth suspension wires respectively via sheet metal parts.

[0038] like Figure 9 The diagram shows the structure of the first emitting electrode 811, which is connected to the fifth suspension wire via a sheet metal structure. Since the emitting electrodes of the first detection unit and the second detection unit can use the same transmission signal, forming the first emitting electrode 811, the X-axis emitting electrode 8211, and the Y-axis emitting electrode 8212 on the same sheet metal structure and connecting them to the same suspension wire to provide the transmission signal can reduce the number of electrical connection lines.

[0039] like Figure 10The diagram shows the structure of the circuit board, on which the second receiving electrode 822 of the second detection unit is etched. When space on the circuit board is ample, the number of second receiving electrodes can be increased; for example, four second receiving electrodes can be combined in pairs to form two differential pairs, or six second receiving electrodes can be combined in pairs to form three differential pairs, and so on. A second driving coil is also provided on the circuit board, including an X-axis driving coil 921 and a Y-axis driving coil 922. To provide symmetrical driving force, two X-axis driving coils 921 or Y-axis driving coils 922 can be used, with each coil positioned on opposite sides. If space is limited, a single X-axis driving coil 921 or Y-axis driving coil 922 can also be used.

[0040] With two suspension wires at the first position of the image stabilization motor and one suspension wire at the second position, to ensure balanced force distribution across the entire motor structure, one suspension wire at the first position must be under tension, while the other suspension wire at the first position must be tension-free; the suspension wire at the second position must be under tension. In other words, the number of suspension wires under tension at each corner must be consistent.

[0041] Furthermore, the first stiffness of the suspension wire under tension at the first position is greater than the second stiffness of the suspension wire without tension at the first position. The suspension wire is made of a highly conductive material to meet the conductivity requirements of the electrical structure.

[0042] In this embodiment, the number of suspension wires is set according to the number of electrical structures to be electrically connected as needed. In practical applications, the number of suspension wires can be set to six, seven, eight, etc. Assume the first detection unit includes a first emitting electrode plate disposed on the second carrier and two first receiving electrodes plate disposed on the first carrier; the second detection unit includes a second emitting electrode plate disposed on the second carrier and a second receiving electrode plate disposed on the circuit board; the first driving unit includes a first driving coil disposed on the first carrier, the first driving coil including a first current inflow end and a first current outflow end; the second driving unit includes a second driving coil disposed on the second carrier, the second driving coil including a second current inflow end and a second current outflow end; the suspension wires are electrically connected to the two first receiving electrodes plate, the first emitting electrode plate, the first current inflow end, the first current outflow end, the second current inflow end and the second current outflow end respectively. At this time, the number of suspension wires is at least seven. When the second driving coil includes an X-axis driving coil and a Y-axis driving coil, it is necessary to set corresponding second current inflow ends and second current outflow ends for the X-axis driving coil and the Y-axis driving coil respectively. At this time, in order to ensure that each driving coil is electrically connected, the number of suspension wires needs to be set to nine, and the number of spring pieces is adjusted synchronously with the number of suspension wires.

[0043] The second embodiment of this utility model relates to a differential capacitor-type image stabilization motor. In this second embodiment, to ensure balanced force on the image stabilization motor, the number of suspension wires is 4N, where N is a natural number greater than 1. The number of suspension wires at each corner of the image stabilization motor is the same. In this embodiment, each suspension wire is under tension, or the number of tensioned suspension wires at each corner can be the same. For example, when there are eight suspension wires, two suspension wires are set at each corner. One of the two suspension wires at each corner can be tension-equipped, and the other can be tension-free. As long as the tension-equipped suspension wires are symmetrically arranged along the central axis of the focusing direction, the balanced force on the image stabilization motor can be ensured.

[0044] like Figures 11 to 12 The diagram shows the structure of a differential capacitor anti-shake motor with eight suspension wires. When the number of electrical structures that need to be electrically connected by suspension wires in the anti-shake motor is less than eight, the suspension wires that do not need to be used as electrical connectors can be connected to the same spring with other suspension wires at the same angle. It is only necessary to increase the number of suspension wires, and the electrical structure connected to the spring can be connected to the circuit board using two suspension wires.

[0045] Applicable to all the above embodiments, the electrical structure is connected to the base via a suspension wire, the base is equipped with a driver chip 10, and the suspension wire is connected to the driver chip via the base circuit, so that the driver chip 10 can control each electrical structure.

[0046] Another feasible embodiment of this utility model relates to an electronic device, including: the above-mentioned differential capacitor anti-shake motor.

[0047] Compared with related technologies, the electronic device provided in this embodiment of the present invention is equipped with the differential capacitor anti-shake motor provided in the aforementioned embodiment. Therefore, it also has the technical effects provided in the aforementioned embodiment, which will not be elaborated here.

[0048] Those skilled in the art will understand that the above embodiments are specific embodiments for implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A differential capacitive anti-shake motor, characterized in that, include: The system comprises a first carrier, a second carrier, a first detection unit, a second detection unit, a first driving unit, a second driving unit, a suspension wire, and a circuit board. The first driving unit drives the first carrier to move in the focusing direction; The second carrier is positioned around the first carrier, and the second driving unit drives the second carrier to move perpendicular to the focusing direction; Both the first detection unit and the second detection unit are differential capacitor units composed of a transmitting electrode and at least two receiving electrodes; The anti-shake motor includes four corners, and at least one corner is provided with two suspension wires; Each of the suspension wires is electrically connected to the circuit board, and the suspension wires are electrically connected to any one or a combination of the emitting plate, receiving plate, first driving unit, and second driving unit of the first detection unit, with at least five suspension wires serving as electrical connectors.

2. The differential capacitive de-jitter motor of claim 1, wherein, Also includes: The spring pieces that correspond one-to-one with the suspension wires; The suspension wire is electrically connected to any one or a combination of the transmitting electrode plate, receiving electrode plate, first driving unit, and second driving unit of the first detection unit via corresponding spring plates.

3. The differential capacitor anti-shake motor according to claim 2, characterized in that, When two suspension wires are set at the first position of the image stabilization motor and one suspension wire is set at the second position of the image stabilization motor, the two spring pieces corresponding to the two suspension wires at the first position form a first pattern, and the spring piece corresponding to the one suspension wire at the second position forms a second pattern. The first pattern and the second pattern are rotationally symmetrical with respect to the central axis of the focusing direction of the image stabilization motor, wherein the rotational symmetry angle is 90 degrees, 180 degrees or 270 degrees.

4. The differential capacitor anti-shake motor according to claim 1, characterized in that, When the number of suspension wires is five, the first detection unit includes: a first transmitting electrode plate disposed on the second carrier and two first receiving electrodes plate disposed on the first carrier; The second detection unit includes: a second transmitting electrode plate disposed on the second carrier and a second receiving electrode plate disposed on a circuit board; The first driving unit includes a first driving coil disposed on the first carrier, the first driving coil including: a first current inflow end and a first current outflow end; The second driving unit includes a second driving coil disposed on the circuit board; The five suspension wires are electrically connected to the two first receiving plates, the first transmitting plate, the first current inflow end, and the first current outflow end, respectively.

5. The differential capacitor anti-shake motor according to claim 4, characterized in that, When two suspension wires are provided at the first position of the image stabilization motor and one suspension wire is provided at the second position of the image stabilization motor, one of the suspension wires at the first position is under tension, and the other suspension wire at the first position is not under tension. There is tension on the suspension wire at the second position.

6. The differential capacitor anti-shake motor according to claim 5, characterized in that, The first stiffness of the suspension wire with tension at the first position is greater than the second stiffness of the suspension wire without tension at the first position.

7. The differential capacitor anti-shake motor according to claim 1, characterized in that, The first detection unit includes: a first transmitting electrode plate disposed on the second carrier and two first receiving electrodes plate disposed on the first carrier; The second detection unit includes: a second transmitting electrode plate disposed on the second carrier and a second receiving electrode plate disposed on a circuit board; The first driving unit includes a first driving coil disposed on the first carrier, the first driving coil including: a first current inflow end and a first current outflow end; The second driving unit includes a second driving coil disposed on the second carrier, the second driving coil including: a second current inflow end and a second current outflow end; The suspension wire is electrically connected to the two first receiving plates, the first transmitting plate, the first current inflow end, the first current outflow end, the second current inflow end, and the second current outflow end, respectively.

8. The differential capacitor anti-shake motor according to claim 1, characterized in that, When the number of suspension wires is 4N, where N is a natural number greater than 1, the number of suspension wires set at each corner of the anti-shake motor is the same.

9. The differential capacitor anti-shake motor according to claim 8, characterized in that, The number of suspension wires with tension at each angle is the same.

10. An electronic device, characterized in that, include: The differential capacitor anti-shake motor as described in any one of claims 1 to 9.

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