Drive Assembly, Motor, and Terminals

Abstract

This application relates to the field of electronic product technology, and in particular to drive assemblies, motors, and terminals. The drive assembly includes a stator and a rotor. The stator includes an exciter, a vibrator, a first fixed part, and a pressure part. The vibrator is connected to the exciter. The first fixed part is connected to the vibrator, and the vibrator is located between the exciter and the first fixed part along a first direction L. The pressure part is connected to the vibrator and the rotor. The exciter is capable of vibrating, and the exciter is capable of driving and acting on the vibrator. Under the constraint of the first fixed part, the vibrator is capable of vibrating along at least the first direction L and a second direction W. The first fixed part is configured to limit the movement distance of the pressure part along the first direction L and the second direction W by using the vibrator. The drive assembly, motor, and terminal provided in the present application can make the drive assembly more stable during movement in different modes during driving, improve the accuracy of movement, and extend the service life based on miniaturizing the motor.

Description

[Technical field]

[0002] TECHNICAL FIELD This application relates to the field of electronic product technology, and in particular to drive assemblies, motors, and terminals. [Background technology]

[0003] In a piezoelectric motor (usually operating in the ultrasonic frequency band, also called an ultrasonic motor, or USM for short), a homogeneous piezoelectric unit drives a resonator to vibrate so that an elliptical motion in a specific direction is formed at some positions of the resonator to drive and move a rotor in contact with a piston. In this type of piezoelectric motor, a dual drive is usually used to vibrate at a corresponding frequency to form an elliptical motion. However, with the miniaturization requirement of the motor, the low voltage drive required for miniaturization usually requires a high electromechanical coupling coefficient of the motor. This is because the frequency is higher than the resonant frequency. frequency When the rotor is driven to move, it causes a sudden deterioration of performance and increases the difficulty of dual drive degeneracy. Therefore, a motor is needed to realize bidirectional movement control by using a single drive. However, due to the miniaturization design, the internal space of this type of motor is small. The vibrating part configured to drive and move the rotor is provided as a corresponding swing arm, and the swing arm moves accordingly with the change of frequency. However, the structural stability of this type of swing arm is low. In addition, when the rotor is driven to move, the driving effect is low, certain deviations may occur, and the swing arm is easily damaged. Summary of the Invention

[0004] The objective of the present application is to provide a drive assembly, a motor, and a terminal, so that, based on miniaturization of the motor, the stability of the drive assembly during movement in different modes during driving can be higher, the accuracy of movement can be improved, and the service life can be extended. [Means for solving the problem]

[0005] The present application relates to a drive assembly, the drive assembly including a stator and a rotor, the stator configured to drive the rotor into motion, the stator comprising: An excitation unit; a vibration unit, the vibration unit being connected to the excitation unit; a first fixed portion, the first fixed portion being connected to the vibration portion, the vibration portion being located between the vibration portion and the first fixed portion along a first direction L; a pressing unit, the pressing unit being connected to the vibration unit and the rotor; Including, The vibration part can vibrate, the excitation part can drive the vibration part to act, and under the restriction by the first fixed part, the vibration part can vibrate at least along a first direction L and a second direction W such that the pressing part pushes the rotor to move along the first direction L; The first fixing part is configured to limit the movement distance of the pressing part along the first direction L and the second direction W by using the vibration part. A drive assembly is provided.

[0006] In the drive assembly for single-phase drive, due to the requirement to miniaturize the motor, the internal space of the drive assembly is small and the mounting between components is tight. In order to meet the motion requirements of the rotor in the limited space and different frequency modes and improve the accuracy and stability of the motion, a first fixing part is provided between the excitation part and the first fixing part to restrict the vibration part, so that the excitation part can vibrate correspondingly in the corresponding designated frequency mode and the vibration can be transmitted to the vibration part. In the first direction L, the first fixing part is provided, and the excitation part vibrates in the direction toward the vibration part, so that a stress can be applied to the vibration part, and the vibration part can vibrate at least along the first direction L and the second direction W. In the designated frequency mode, the phase difference between the vibration along the first direction L and the vibration along the second direction W can drive the pressing part provided on the vibration part to move in the corresponding direction. In addition, under the restriction by the first fixing part, the moving distance of the pressing part along the first direction L and the second direction W is limited so that the pressing part can form a corresponding elliptical moving orbit. When the pressing part moves along the elliptical moving trajectory, the pressing part can abut against the rotor and apply pressure to the rotor. Under pressure, the rotor in contact with the corresponding position can be pushed by the pressing part to move linearly or rotate. This avoids the insufficient stability of the stator that drives the rotor to move in the narrow space in the miniaturized motor, reduces the loss of the stator, and extends the service life.

[0007] In a possible design, the vibrating part is deformable, Under the constraint of the first fixed portion, the vibration of the excitation portion can deform the vibration portion along at least a first direction L and a second direction W, and the pressing portion is provided at a position within the vibration portion that is deformable along the first direction L and the second direction W.

[0008] Under the constraint of the first fixed portion, the vibrating portion is deformed to form an elliptical movement trajectory at the position where the pressing portion is provided within the vibrating portion so as to have higher stability.

[0009] In a possible design, the vibrating part is an annular mechanical part, so that the vibrating part is deformable, the first fixed portion and the excitation portion are provided on two sides of the annular mechanical component facing each other along a first direction L, the annular mechanical component having an inner wall; When the excitation part vibrates, the distance between the two opposite sides of the inner wall along the first direction L increases and the distance between the two opposite sides of the inner wall along the second direction W decreases, and the pressing part is provided at a position where the distance between the two opposite sides of the inner wall can decrease; or The distance between two opposite sides of the inner wall along the first direction L is decreased, and the distance between the two opposite sides of the inner wall along the second direction W is increased, and the pressing portion is provided at a position where the distance between the two opposite sides of the inner wall can be increased.

[0010] An annular mechanical part is provided, and has the feature that the structure of the annular mechanical part is deformable under the action of an external force. Therefore, under the restriction by the corresponding fixing part, the vibration of the excitation part along the first direction L can cause tensile or compressive stress in the annular structure, and the distance between the two opposite sides of the inner wall of the annular structure increases or decreases under the action of the stress. When the annular mechanical part is deformed by extrusion (or elongation) caused by the stress along the first direction L, a deformation by expansion (or extrusion) along the second direction W occurs based on the transmission of force, and the vibration part can form a stable elliptical movement trajectory as required, so that the pressing part forms a stable elliptical movement trajectory.

[0011] In a possible design, the pressing portion is arranged symmetrically on two sides of the annular mechanical part along the second direction W, and the pressing portion is provided at a position in the annular mechanical part where the distance between the two opposite sides of the inner wall is the greatest.

[0012] In order to enable the pressing portion provided on the annular mechanical part to move along at least the first direction L and the second direction W to form an elliptical movement orbit, and to prevent the annular mechanical part from abutting the rotor and affecting the use effect of the pressing portion during deformation, the pressing portion may be provided at a position where the distance between the two opposite sides of the inner wall is the furthest, in order to ensure stability in pressing to move the rotor by the pressing portion and to improve the accuracy of movement.

[0013] In a possible design, the vibration part is an elastic part, which is elastically deformable at least along a first direction L and a second direction W, The pressing portions are provided at both ends of the elastic portion in the elastic deformation direction.

[0014] Based on the characteristics of the elastic part, during vibration, the elastic part is deformed by expansion (or contraction) along a direction other than the first direction L, i.e., along the second direction W. The deformation along the first direction L and the deformation along the second direction W are combined so that the vibrating part can have a phase difference in the first direction L and the second direction W and can perform a corresponding elliptical motion. In addition, the pressing part provided at the end of the vibrating part can form an elliptical movement orbit of regular movement for driving and moving the rotor, thereby improving the stability of the rotor's movement.

[0015] In a possible design, the vibrating part includes two or more connecting rods, at least two adjacent connecting rods are connected to form a connecting end, and there is a first included angle between the connected connecting rods; When the excitation part vibrates, the first included angle can increase or decrease so that the vibration part can be deformed; The pressing portion is provided at a position close to the connection end portion.

[0016] In this method of providing a connecting rod, when the excitation part vibrates, the vibration of the excitation part can act on the vibration part under the restriction of the corresponding fixed part. The connecting rod is subjected to extrusion or tensile stress, so that the first included angle increases or decreases accordingly. When the first included angle changes, the two ends of the connecting rod respectively connected to the excitation part and the first fixed part are close to or far from each other, and the connecting rod also moves along the second direction W accordingly. Therefore, the connecting rod has a phase difference between the first direction L and the second direction W, and at least a part of the connecting rod can form an elliptical movement orbit, thereby improving the stability of the movement of the pressing part and improving the accuracy of forming the elliptical movement orbit.

[0017] In a possible design, there are two connecting rods, which are connected to form a V-shaped structure to form a first included angle, The two connecting rods are respectively connected to the excitation part and the first fixed part, The pressing portion is connected to the connection end portion.

[0018] The connecting rod is attached to the V-shaped structure, which has a certain stability and strength. When the structure is under pressure and the first included angle changes, the controllability of driving the pressing part to perform a corresponding elliptical movement is higher, thereby improving the stability of driving and moving the rotor.

[0019] In a possible design, the cross-sectional area of ​​the connecting rod increases gradually along the axial direction of the connecting rod, in the direction away from the connecting end.

[0020] The cross section changes gradually, so that the structural stability of connecting the excitation part and the first fixed part by the connecting rod is higher, and the vibration from the excitation part can be better transmitted without increasing or decreasing the first included angle. The motion of the rotor can be controlled by using a low frequency, thereby improving the use effect of the drive assembly.

[0021] In a possible design, there are three connecting rods, which are connected in sequence to form an open structure, The two outermost connecting rods are respectively connected to the excitation part and the first fixed part; The pressing part is connected to a centrally located connecting rod.

[0022] The pressing part is connected to the connecting rod at a central position, so that the stability and reliability of the connection between the pressing part and the connecting rod can be improved, and the pressing part is not easily damaged when pressed to move the rotor, thereby extending the service life of the pressing part.

[0023] In a possible design, there are four or more connecting rods, with multiple connecting rods connected in series to form an enclosed polygonal structure; The excitation part and the first fixing part are respectively connected to the connection end part along the first direction L, and the pressing part is connected to the connection end part along the second direction; or The excitation part and the first fixed part are respectively connected to a connecting rod along a first direction L, and the pressing part is connected to the connecting rod along a second direction W.

[0024] The enclosed polygonal connection method has high structural stability and strength. When the pressing part presses to move the rotor, the elliptical movement trajectory will not deviate due to insufficient stability to reduce the stability of the rotor's movement.

[0025] In a possible design, multiple connecting rods are integrally molded.

[0026] This can better convert the vibration into the required elliptical movement trajectory while satisfying the requirements for structural stability of the vibrating part.

[0027] In a possible design, the pressing portion is a convex structure extending from the vibrating portion along the second direction W, the convex structure being capable of pressing the rotor back and forth along the first direction L.

[0028] A convex structure is provided extending at least partially from the vibrating part along the second direction W. This facilitates attachment between the pressing part and the rotor and prevents deformation of the vibrating part due to contact of other parts of the vibrating part with the rotor, which would affect the stability of the drive for moving the rotor by the pressing part and affect the elliptical movement trajectory of the pressing part.

[0029] In a possible design, the stator further comprises a second fixed part configured to allow vibrations of the excitation part to act on the vibration part, Along the first direction L, the second fixed portion is connected to the side of the excitation portion remote from the vibration portion, and the distance between the first fixed portion and the second fixed portion is fixed.

[0030] A first fixed part and a second fixed part are provided. When the first fixed part and the second fixed part are fastened to the motor, the connected excitation part and vibration part are restricted between the first fixed part and the second fixed part. Therefore, when the excitation part vibrates, the excitation part can move only in a direction toward the vibration part under the restriction by the second fixed part. In this case, under the restriction by the first fixed part, the position where the vibration part is connected to each of the excitation part and the first fixed part is subjected to at least a compressive or tensile stress from the first direction L, and the vibration part is deformed. In addition, based on the arrangement of the structure of the vibration part, deformation may occur at least along the second direction W so that at least a part of the vibration part (the position where the pressing part is provided) performs an elliptical motion.

[0031] In a possible design, the excitation section may include: a body configured to connect to the vibration portion; and a drive connected to the body and configured to drive the body into vibration in a single phase mode; Including, The drive unit has a preset vibration frequency, and under the action of the preset vibration frequency, the vibration of the body is capable of vibrating the vibration unit along at least a first direction L and a second direction W.

[0032] The single-phase drive is designed so that the excitation part can vibrate at the corresponding frequency (resonator frequency ) can be implemented, thereby reducing the space occupied in mounting the drive structure in the simple drive mode.

[0033] In a possible design, the drive is connected to at least one side of the body along the second direction W.

[0034] Therefore, the drive part can drive the connected body to have a good vibration effect.

[0035] In a possible design, the drive unit may be a deformable portion, the deformable portion being connected to the body, the deformable portion being deformable after being energized; an electric current unit, the electric current unit being connected to the deformable part, and electricity generated by the electric current unit being capable of being transmitted to the deformable part; Including, The current carrying portion is capable of generating an electric field at a preset frequency, and the deformable portion is deformed under the action of the electric field to drive the body into vibration.

[0036] The driving part can thus convert electrical energy into vibrations of the required frequency mode, and the connected body is driven to be correspondingly stretched or compressed such that the connected vibrating part is driven to be deformed by elongation or compression along a first direction.

[0037] In a possible design, the body, the vibrating part and the first fixed part are integrally molded, which can improve the structural stability of the connected parts and improve the vibration transmission effect.

[0038] The present application further provides a motor. The motor includes a drive assembly. The drive assembly is a drive assembly according to any one of the above implementations. The advantages of the motor are the same as those of the drive assembly, and are not specifically described herein.

[0039] The present application further provides a terminal including a motor, the motor being as described above. The advantages of the terminal are the same as those of the drive assembly and are not specifically described herein.

[0040] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not intended to be limiting of the present application. [Brief description of the drawings]

[0041] [Figure 1] FIG. 2 is a principal view of a drive assembly according to an embodiment of the present application, where the direction indicated by the arrow L is a first direction and the direction indicated by the arrow W is a second direction. [Diagram 2] FIG. 2 is a principal view of a stator according to an embodiment of the present application, where the direction indicated by the arrow L is a first direction and the direction indicated by the arrow W is a second direction. [Diagram 3] FIG. 3 is a top view of FIG. 2. [Figure 4] FIG. 3 is another top view of FIG. 2. [Diagram 5] FIG. 2 is a simplified schematic diagram of a structure of a connection between parts of a stator according to an embodiment of the present application, where the direction indicated by the arrow L is a first direction and the direction indicated by the arrow W is a second direction. [Figure 6] FIG. 2 is another simplified schematic diagram of a structure of a connection between parts of a stator according to an embodiment of the present application, where the direction indicated by the arrow L is a first direction and the direction indicated by the arrow W is a second direction. [Figure 7] FIG. 2 is yet another simplified schematic diagram of a structure of a connection between parts of a stator according to an embodiment of the present application, where the direction indicated by the arrow L is a first direction and the direction indicated by the arrow W is a second direction. [Figure 8] FIG. 2 is yet another simplified schematic diagram of a structure of a connection between parts of a stator according to an embodiment of the present application, where the direction indicated by the arrow L is a first direction and the direction indicated by the arrow W is a second direction. [Figure 9]FIG. 2 is a simplified schematic diagram of a structure of a structural mounting of a first vibrating part according to an embodiment of the present application, where the direction indicated by the arrow L is a first direction and the direction indicated by the arrow W is a second direction. [Figure 10] FIG. 2 is a simplified schematic diagram of a structure of a structural mounting of a second vibrating part according to an embodiment of the present application, where the direction indicated by the arrow L is a first direction and the direction indicated by the arrow W is a second direction. [Figure 11] FIG. 2 is a simplified schematic diagram of a structure of a structural mounting of a third vibrating part according to an embodiment of the present application, in which the direction indicated by the arrow L is a first direction and the direction indicated by the arrow W is a second direction. [Figure 12] FIG. 13 is a simplified schematic diagram of a structural mounting structure for a fourth vibrating part according to an embodiment of the present application. [Figure 13] FIG. 12 is a simplified schematic diagram of the structure of the connections between all the parts other than the drive section of FIG. 11. [Figure 14] FIG. 13 is a simplified schematic diagram of a structural mounting structure for a fifth vibrating part according to an embodiment of the present application. [Figure 15] FIG. 14 is a simplified schematic diagram of another excitation section structure of FIG. 13. [Figure 16] FIG. 2 is a simplified schematic diagram of a stator structure according to an embodiment of the present application. [Figure 17] FIG. 13 is a simplified schematic diagram of a structural mounting structure for a sixth vibrating part according to an embodiment of the present application. [Figure 18] FIG. 13 is a simplified schematic diagram of a structural mounting structure for the seventh vibrating part according to one embodiment of the present application. [Figure 19] FIG. 13 is a principal view of another stator according to an embodiment of the present application. [Figure 20] FIG. 13 is a top view of another stator according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0042] The accompanying drawings, which are incorporated herein as part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0043] The terms used in the embodiments of this application are merely for the purpose of describing particular embodiments and are not intended to limit the present application. The singular terms "a," "the," and "this" used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise.

[0044] An embodiment of the present application provides a terminal. The terminal is provided with a motor. The terminal may be an electronic product such as a mobile phone or a camera. This is not particularly limited in the present specification. However, for the motor provided in the terminal, as electronic products such as mobile phones become lighter and thinner, the internal space shrinks, and the space occupied by the motor used in the terminal to drive and move the corresponding components also shrinks. Therefore, in order to miniaturize the motor, the overall space occupied by the motor needs to be reduced. In order to minimize the size of the motor for miniaturization, the miniaturization of the structural mounting of the drive assembly, which is an important part of the motor, has a great impact on the overall slimming design of the motor. Therefore, miniaturizing the drive assembly to the maximum extent can be used as a design concept for miniaturizing the motor. The drive assembly provided in the motor includes a stator and a rotor 6. The stator is configured to drive and move the rotor 6. The following mounting method is used: the piezoelectric unit drives and vibrates the resonator so that an elliptical rotation in a specific direction occurs at a specific position or several positions on the resonator to drive and move the rotor 6 that is in contact with the position. This can reduce the space occupied during the operation of the drive assembly to a certain extent. In this type of piezoelectric motor, the stator drives the rotor 6 attached to the stator to move linearly or rotate based on the drive provided. Due to the complexity of the internal structure of the motor, the low voltage drive required for miniaturization usually requires a high electromechanical coupling coefficient of the motor. This is because the frequency resonates. frequency This causes a rapid degradation of performance when the frequency deviates slightly from the normal frequency, and increases the difficulty of frequency degeneracy during polyphase drive. Therefore, to improve the stability of the drive frequency while achieving a compact design, single-phase drive is used.

[0045] In the drive assembly for single-phase drive, due to the requirement to miniaturize the motor, the internal space of the drive assembly is small and the attachment between components is tight. In order to meet the motion requirements of the rotor 6 in the limited space and different frequency modes and improve the accuracy and stability of the motion, as shown in Fig. 1, Fig. 2 and Fig. 11, the stator includes an excitation part 2, a vibration part 4, a first fixed part 5 and a pressing part 3. The vibration part 4 is connected to the excitation part 2. The first fixed part 5 is connected to the vibration part 4, and the vibration part 4 is located between the excitation part 2 and the first fixed part 5 along the first direction L. The pressing part 3 is connected to the vibration part 4 and the rotor 6. The excitation part 2 is capable of vibrating, and the excitation part 2 is capable of driving and acting on the vibration part 4. Under the restriction by the first fixed part 5, the vibration part 4 is capable of vibrating at least along the first direction L and the second direction W, so that the pressing part 3 pushes the rotor 6 to move along the first direction L. The first fixed part 5 is configured to limit the moving distance of the pressing part 3 along the first direction L and the second direction W by using the vibration part 4. The first fixed part 5 is provided between the excitation part 2 and the first fixed part 5 to limit the vibration part 4, so that the excitation part 2 can vibrate correspondingly in the corresponding designated frequency mode and the vibration can be transmitted to the vibration part 4. In the first direction L, the first fixed part 5 is provided, and the excitation part 2 vibrates in a direction toward the vibration part 4, so that a stress can be applied to the vibration part 4, and the vibration part 4 can vibrate at least along the first direction L and the second direction W. In the designated frequency mode, the phase difference between the vibration along the first direction L and the vibration along the second direction W can drive the pressing part 3 provided on the vibration part to move in the corresponding direction. In addition, under the restriction by the first fixed part 5, the moving distance of the pressing part 3 along the first direction L and the second direction W is limited so that the pressing part 3 can form a corresponding elliptical moving orbit. When the pressing part 3 moves along the elliptical moving trajectory, the pressing part 3 can abut against the rotor 6 and apply pressure to the rotor 6. Under pressure, the rotor 6 in contact with the corresponding position can be pushed by the pressing part 3 to move linearly or rotate.This can be simply understood as follows: the provided excitation part 2 is adjusted to a corresponding frequency mode according to the requirement that when the stator is attached to the rotor 6, the rotor 6 must translate or rotate accordingly, so that the excitation part 2 vibrates accordingly in that frequency mode. During vibration, the vibration occurs along the first direction L, so that the excitation part 2 applies a deformation caused by the vibration to the vibration part 4. In addition, under the restriction by the position of the first fixed part 5, the deformation of the excitation part 2 causes the vibration part 4 to be pressed or stretched by a stress along the first direction L, and the vibration part 4 can move along the second direction W while being pressed or stretched along the first direction L. Under the combination of the movement along the first direction L and the movement along the second direction W, an elliptical movement is generated at the corresponding position on the vibration part 4, so that the rotor 6 in contact with that position is driven to move accordingly. The vibration part 4 and the first fixed part 5 are provided such that the vibration part 4 can perform a stable elliptical movement in order to drive and move the corresponding rotor 6. This avoids poor stability of the stator which drives the rotor 6 to move in the tight space inside the miniaturized motor, reduces losses in the stator and extends its service life.

[0046] In the structural mounting in which the moving distance of the pressing part 3 along the first direction L and the second direction W is limited to form an elliptical moving orbit, since the motor is miniaturized, the arc of the elliptical moving orbit of the motor is smooth, and the distance the rotor 6 needs to be driven to move is also small. Therefore, during the elliptical movement of the pressing part 3, the movement along the second direction W is mainly intended to make the pressing part 3 abut against the rotor 6 and apply a pushing force to the rotor 6, so that the pressing part 3 can more stably drive the rotor 6 to move or rotate in the first direction L.

[0047] It should be emphasized that, for the frequency modes mentioned herein, the excitation unit 2 may have multiple frequency modes, and the frequency modes change at different frequencies during electric driving. During single-phase driving, the elliptical motion of the upper and lower ends of the vibration unit 4 in different frequency modes is clockwise or counterclockwise, so that the rotor can be pushed to move in a positive or negative direction, thereby realizing bidirectional movement through single-phase driving. The change in frequency mode may affect at least the vibration direction and vibration amplitude of the excitation unit 2, so that the elliptical movement trajectory at a certain position in the vibration unit 4 (the position where the pressing unit 3 is provided) is finally changed, and the rotor 6 attached to the vibration unit 4 can be controlled to reciprocate and / or rotate along a straight line. Therefore, in the provided motor, the frequency mode of the motor needs to be adjusted accordingly based on the actual usage situation, so that the rotor 6 can linearly reciprocate by a corresponding distance and / or the rotor 6 rotates relative to the stator. This is not particularly limited in the present specification. In addition, in the aforementioned first direction L and second direction W, there is at least a non-zero included angle between the two directions, and the specified included angle between the first direction L and the second direction W changes when a specific structure of the vibrating part 4 along the second direction W changes, when the vibration along the first direction L causes a change in the structure of the vibrating part 4 along the second direction W, etc., on the premise that the final vibration of the vibrating part 4 pushes the rotor 6 to move accordingly. This is not particularly limited in the present specification.

[0048] Specifically, as shown in FIG. 2, the vibration part 4 is deformable so that, under the constraint by the first fixed part 5 and the excitation part 2, in the corresponding frequency mode, the provided vibration part 4 drives the pressing part 3 to form an elliptical orbit in a stable direction (clockwise or counterclockwise) and pushes the rotor 6 to move accordingly. Under the constraint by the first fixed part 5, the vibration part 4 is deformed by stress, and the vibration part 4 can be deformed at least along the second direction W. The vibration of the excitation part 2 can deform the vibration part 4 at least along the first direction L and the second direction W. The pressing part 3 is provided at a position in the vibration part 4 that is deformable along the first direction L and the second direction W. The vibration part 4 is provided as a deformable component such that the excitation part 2 applies a tensile force or a pushing force to the vibration part 4 in a limited space along the first direction L under the constraint by the first fixed part 5. In addition, the vibration part 4 can be deformed such that the vibration part 4 can be deformed by expansion or contraction along the first direction L. The deformation along this direction can drive the vibration part 4 to deform at least along the second direction W. The corresponding displacement conversion ability can be realized through the deformation motion along the two directions, so that at least a part of the vibration part 4 moves along the corresponding elliptical orbit. Therefore, the pressing part 3 is provided in the vibration part 4 at a position where an elliptical movement orbit can be formed. In this way that the vibration part 4 is deformable, within the minimum space range, the vibration part 4 can form an elliptical movement orbit under the action of vibration in the corresponding frequency mode, so that the pressing part 3, which also forms an elliptical movement orbit, is driven to push and move the rotor 6. This structural mounting is simple. Under the restriction by the first fixing part 5, the vibration part 4 is deformed to form an elliptical movement orbit at the position where the pressing part 3 is provided in the vibration part 4, so that the stability is higher.

[0049] In addition, the stator further includes a second fixed part configured to enable the vibration of the excitation part 2 acting on the vibration part 4, so as to drive the pressing part 3 to move along the first direction L and the second direction W to drive the vibration part 4 to deform by elongation or extrusion along the first direction L, so as to drive the pressing part 3 to perform an elliptical movement by a restriction on the moving distance along the corresponding direction, so that the vibration part 4 better performs a corresponding ellipse through deformation under the restriction by the first fixed part 5 and under the corresponding force applied to the vibration part 4 by the excitation part 2. Along the first direction L, the second fixed part 1 is connected to the side of the excitation part 2 away from the vibration part 4, and the distance between the first fixed part 5 and the second fixed part 1 is fixed. The first fixed part 5 and the second fixed part 1 are provided. When the first fixed part 5 and the second fixed part 1 are fastened to the motor, the connected excitation part 2 and vibration part 4 are restricted between the first fixed part 5 and the second fixed part 1. Therefore, when the excitation part 2 vibrates, the vibration can only be applied to the vibration part 4 under the restriction by the second fixed part 1. In this case, under the restriction by the first fixed part 5, the position where the vibration part 4 is connected to the excitation part 2 and the first fixed part 5 is subjected to at least a compressive or tensile stress from the first direction L, and the vibration part 4 is deformed by compression or elongation. In addition, based on the arrangement of the structure of the vibration part 4, deformation may occur at least along the second direction W. The phase difference caused by the deformation of the vibration part 4 along the first direction L and the second direction W results in an elliptical movement of the pressing part 3 and the end of the vibration part 4.

[0050] More specifically, as shown in FIG. 2 and FIG. 11, the structural mounting in which the ends of the pressing part 3 and the vibrating part 4 can move along an elliptical trajectory to drive the corresponding rotor 6 to move and / or rotate is described below using the movement of the rotor 6 as an example. This is not emphasized separately in the following description, and the elliptical trajectory in different frequency modes can be adaptively adjusted as needed. The pressing part 3 forms an elliptical moving trajectory. The pressing part 3 forms an elliptical moving trajectory. Based on the different phase differences caused by the deformation of the vibrating part 4 along the first direction L and the second direction W, the moving distances of the pressing part 3 along the first direction L and the second direction W are also different, so that different elliptical moving trajectories are formed. Specifically, when the excitation part 2 vibrates, the vibration part 4 is vibrated and deformed, so that the vibration part 4 has the displacement conversion ability along the first direction L and the second direction W, so as to drive the connected pressing part 3 to form a final elliptical moving trajectory for pushing the rotor 6 to move accordingly. In this process, after the frequency mode is adjusted, the strength and direction of the elliptical motion of the pressing part 3 can be determined by observing the moving direction and speed of the rotor 6. The elliptical motion of the pressing part 3 usually changes with different frequency modes. Therefore, the strength and direction of the elliptical motion of the pressing part 3 corresponding to the moving direction of the rotor 6 can be determined by observing the moving direction and speed of the rotor 6. Around Wave number modecan be obtained through observation. When the rotor 6 needs to move in a certain direction, the corresponding frequency mode can be excited only through the vibration of the excitation part 2 at the corresponding frequency, so that the pressing part 3 is excited to push the rotor 6 to move along a certain direction. In addition, the pressing part 3 is provided, thereby avoiding excessive surface contact between the vibration part 4 and the rotor 6, and avoiding damage to the vibration part 4 due to excessive friction. It should be emphasized herein that for a specific position where the pressing part 3 is provided on the vibration part 4, a corresponding position can be selected to connect the pressing part 3 based on the specific structural mounting of the vibration part 4 and the displacement change of the vibration of the vibration part 4, so that the pressing part 3 can better convert the vibration of the vibration part 4 into a stable elliptical moving trajectory. In addition, in the process where the pressing part 3 presses the rotor 6, the deformation of the vibration part 4 does not bring about a direct contact with the rotor 6 to affect the movement of the rotor 6. The position of the pressing part 3 is adjusted accordingly based on the specific structure of the provided vibration part 4. This is not particularly limited herein.

[0051] Optionally, the pressing part 3 is provided to push and move the rotor 6. Therefore, the number of the pressing parts 3 and the direction in which the pressing parts 3 are provided on the vibration part 4 need to be adjusted accordingly based on the number and position of the rotor 6. This is not particularly limited in the present specification. In addition, the provided pressing part 3 may be a convex structure, or a cylindrical structure, provided on the vibration part 4 extending along the second direction W so that the rotor 6 can be pushed to reciprocate along the first direction L. Alternatively, the specific structure and specific extension direction of the pressing part 3 may be adjusted accordingly based on the position of the provided rotor 6 to make point contact or surface contact with the rotor 6 attached to the pressing part 3 so as to move or rotate the rotor 6 accordingly through movement along an elliptical orbit. This is not particularly limited in the present specification. Usually, in order to avoid deterioration of the performance (e.g., driving force) of the motor due to wear of the pressing part 3 when the pressing part 3 pushes and moves the rotor 6, the provided pressing part 3 is subjected to an anti-wear treatment or the pressing part 3 is coated with an anti-wear layer.

[0052] In order to enable the provided vibration part 4 to have displacement conversion ability along the corresponding direction under the action of the excitation part 2 and the restriction by the corresponding first fixed part 5 and second fixed part 1, the provided vibration part 4 may have multiple mounting methods so that the connected pressing part 3 has a stable elliptical moving trajectory. The details are as follows:

[0053] In one embodiment, as shown in FIG. 9, the provided vibration part 4 may be an elastic part 42 having a deformation ability. When the excitation part 2 vibrates, under the restriction by the first fixing part 5, the elastic part 42 can be deformed by contraction or expansion at least along the first direction L, so as to drive the elastic part 42 to be deformed at least along the second direction W. The pressing part 3 is provided at both ends of the elastic part 42 in the elastic deformation direction (i.e., the second direction W). The vibration part 4 is provided as an elastic part 42 capable of elastic deformation. Under the action of the vibration of the excitation part 2 and under the restriction by the displacement of the first fixing part 5 and the second fixing part 1, the vibration part 4 is subjected to an extrusion or tensile stress along the first direction L, so that the elastic part 42 is deformed by contraction or expansion. In addition, when the elastic part 42 is deformed by contraction (or expansion) along this direction, based on the properties of the elastic part 42, the elastic part reliably expands (or contracts) along a direction other than the first direction L, i.e., the second direction W. The deformation along the first direction L and the deformation along the second direction W are combined so that the vibration part 4 can have a phase difference in the first direction L and the second direction W and perform a corresponding elliptical motion. In addition, the pressing part 3 provided at the end of the vibration part 4 can form an elliptical movement orbit of regular movement to drive and move the rotor 6, thereby improving the stability of the movement of the rotor 6.

[0054] Optionally, based on the properties of the provided elastic part 42, after the elastic part 42 is deformed by extrusion or stretching along the first direction L, the elastic part 42 becomes more and more likely to be elastically deformed along the first direction L. Therefore, the second direction W may be set perpendicular to the first direction L, and the pressing part 3 is provided at an edge position of the vibration part 4 having the maximum deformation along the second direction W to prevent other parts of the vibration part 4 from exceeding the pressing part 3 due to excessive deformation of the vibration part 4 that contacts the rotor 6 and interferes with the movement of the rotor 6.

[0055] In another embodiment, as shown in Fig. 10, the provided vibration part 4 may alternatively be provided as an annular mechanical part 43. The structure of the annular mechanical part 43 is deformable under the action of an external force. Specifically, along the first direction L, the first fixed part 5 and the excitation part 2 are provided opposite to each other on two sides of the annular mechanical part 43 (specifically, the first fixed part 5 and the excitation part 2 are located on the same straight line along the first direction L and have no height difference along the second direction W), and the annular mechanical part 43 has an inner wall 431. When the excitation unit 2 vibrates, the distance between the two opposite sides of the inner wall 431 along the first direction L increases, and the distance between the two opposite sides of the inner wall 431 along the second direction W decreases with the increase in the distance between the two opposite sides of the inner wall 431 along the first direction L, and the pressing unit 3 is provided at a position where the distance between the two opposite sides of the inner wall 431 can decrease; or the distance between the two opposite sides of the inner wall 431 along the second direction W increases with the decrease in the distance between the two opposite sides of the inner wall 431 along the first direction L, and the pressing unit 3 is provided at a position where the distance between the two opposite sides of the inner wall 431 can increase. The annular mechanical part 43 is provided as an annular structure, so that the central part has a hollow structure. When the excitation unit 2 transmits vibration at the corresponding frequency, the excitation unit 2 transmits vibration to the annular structure along the first direction L through the connection position. In addition, under the restriction by the connected first fixed part 5 and second fixed part 1, the annular structure is deformed under the action of tensile or extrusion stress, so that two connection positions in the annular structure, respectively connected to the first fixed part 5 and the excitation part 2, move toward or away from each other. That is, under the restriction by the corresponding fixed parts, the vibration of the excitation part 2 along the first direction L can cause tensile or compressive stress in the annular structure, and the distance between the two opposite sides of the inner wall 431 of the annular structure increases or decreases under the action of stress. The movement pattern and the movement range of the increase or decrease are determined based on the vibration of the excitation part 2. In addition, when the annular machine part 43 is deformed by extrusion (or elongation) caused by the stress along the first direction L, deformation by expansion (or extrusion) along the second direction W occurs based on the transmission of force.That is, at least along the second direction W, the distance between the two opposite sides of the inner wall 431 of the annular structure decreases or increases as the distance between the two opposite sides of the inner wall 431 along the first direction L increases or decreases in order to drive the pressing unit 3 provided at the corresponding position to perform an elliptical motion. Based on this, the pressing unit 3 is provided at an edge position near the corresponding annular structure of the rotor 6. In addition, the pressing units 3 are symmetrically arranged on two sides of the annular mechanical part 43 along the second direction W, and the pressing units 3 are provided at a position in the annular mechanical part 43 where the distance between the two opposite sides of the inner wall 431 is the farthest in order to prevent other parts of the annular structure from affecting the pressing unit 3 that presses and moves the rotor 6 when the annular structure is deformed.

[0056] In yet another embodiment, as shown in FIG. 5, the provided vibration part 4 also includes a connecting rod 41. There are two or more connecting rods 41. At least two adjacent connecting rods 41 are connected to form a connecting end, and there is a first included angle between the connected connecting rods. When the excitation part 2 vibrates, the first included angle can be increased or decreased so that the vibration part 4 can be deformed. The pressing part 3 is provided at a position close to the connecting end. The corresponding vibration part 4 is formed through a structural attachment between the connecting rods 41. In this method of providing the connecting rods 41, along the first direction L, the two outermost connecting rods 41 are respectively connected to the excitation part 2 and the first fixed part 5, and the other end of the excitation part 2 is connected to the second fixed part 1. Under the restriction by the two fixed parts, the vibration of the excitation part 2 can act on the vibration part 4. The connecting rods 41 are subjected to extrusion or tensile stress, so that the first included angle is correspondingly increased or decreased. When the first included angle changes, the two ends of the connecting rod 41 respectively connected to the excitation part 2 and the first fixed part 5 are close to or apart from each other, and the connecting rod 41 also moves along the second direction W accordingly. Therefore, the connecting rod 41 has a phase difference between the first direction L and the second direction W, and at least a part of the connecting rod 41 can form an elliptical moving orbit. In this structural mounting, the designated second direction W can be appropriately adjusted based on the position and direction of the designated first included angle. This is not particularly limited in this specification. In addition, for the pressing part 3 provided on the connecting rod 41, the position of the first included angle between the connecting rods 41 is most affected by the deformation in the process of the connecting rod 41 moving accordingly with the frequency of vibration, so that the pressing part 3 may be provided at a position close to the first included angle to prevent the connecting rod 41 from directly contacting the rotor 6 due to deformation. In addition, the corresponding vibrating part 4 is formed through the structural mounting between the connecting rods 41, so that the structural stability of the vibrating part 4 is higher. When the excitation part 2 transmits vibrations at the corresponding frequency, the vibration part 4 can absorb the vibrations better, so that the frequency is more stable.In addition, with this structural attachment between the connecting rods 41, when vibrations with corresponding frequencies act on the vibrating part 4 and the connecting rods 41 are correspondingly deformed with the vibrations, the controllability is high, and the connecting rods 41 can move accordingly based on the required direction and amplitude to form the required elliptical movement trajectory. In addition, during the movement along the trajectory, the attached rotor 6 needs to be driven to move accordingly, and the connecting rods 41 are not susceptible to out-of-plane deviation from the elliptical movement trajectory under the restriction by the first fixed part 5 and the second fixed part 1 based on the strength of the structure of the connecting rods 41, so that the pressing part 3 connected to the connecting rods 41 can stably drive the rotor 6 to move.

[0057] In this embodiment, for the structural attachment between the connecting rods 41, in the limited space in the miniaturized motor, the connecting rods 41 may be combined to form different structures according to different requirements for the motion pattern, motion range, etc. of the rotor 6 based on the position where the rotor 6 can be provided relative to the stator. Specifically, the structures may include, but are not limited to, several types as follows:

[0058] Optionally, as shown in FIG. 11, two connecting rods 41 may be provided, and the connecting rods 41 are connected to form a structure of a V-shape 411 to form a first included angle. The two ends of the two connecting rods 41 are respectively connected to the excitation part 2 and the first fixed part 5, and the pressing part 3 is connected to the connecting end. When the excitation part 2 vibrates, the first included angle can be increased or decreased under the action of a pulling force or a pushing force applied to the vibration part 4. In the vibration part 4 formed by the connecting rods 41 in this structural attachment, the pressing part 3 may be provided at the end (i.e., the connecting end) of the acute corner of the structure of the V-shape 411, and the pressing part 3 is oriented toward the corresponding rotor 6. The V-shape 411 may also be a convex structure with its connecting end oriented toward the rotor 6 to help drive the rotor 6. In this structure of the V-shape 411, the V-shape 411 has a certain stability and strength. Therefore, when the V-shape 411 is subjected to pressure and the first included angle changes, the controllability of driving the pressing part to perform a corresponding elliptical motion is high, thereby improving the stability of driving the rotor 6 to move.

[0059] Specifically, in this structural mounting, the structural stability of the mounted connecting rod 41 is high, and under the action of vibration of the corresponding frequency, the connecting rod 41 can form a stable elliptical movement orbit to drive and move the rotor 6. In order to improve the stability of the connecting rod 41 so that the movement of the connecting rod 41 in the corresponding direction is higher when the connecting rod 41 is subjected to a pulling force or a pushing force without changing the number and connection direction of the connecting rod 41, the connecting rod 41 may be provided as a structure with a non-uniform cross section. For example, the cross-sectional area of ​​the connecting rod 41 gradually increases along the axial direction of the connecting rod 41 in the direction away from the connection end. In this way, the cross section gradually changes, so that the structural stability of the connecting rod 41 connecting the excitation part 2 and the first fixed part 5 by the connecting rod 41 is higher, and the vibration from the excitation part 2 can be better transmitted without increasing or decreasing the first included angle. The movement of the rotor 6 can be controlled by using a low frequency, thereby improving the use effect of the drive assembly.

[0060] Alternatively, as shown in FIG. 17, three connecting rods 41 may be provided, and the connecting rods 41 are connected in sequence to form an open structure, so that two first included angles can be formed. The two outermost connecting rods 41 are respectively connected to the excitation part 2 and the first fixed part 5. When the excitation part 2 vibrates, the first included angle can increase or decrease. The pressing part 3 is connected to the connecting rod 41 located in the center. In this structural mounting between the connecting rods 41, at least three connecting rods 41 are connected in sequence, and a first included angle is formed every two adjacent connecting rods 41. In this structural design, the pressing part 3 is connected to the connecting rod 41 at the center position, so that the stability and reliability of the connection between the pressing part 3 and the connecting rod 41 can be improved, and the pressing part 3 is not easily damaged when pressing to move the rotor 6, thereby extending the service life of the pressing part 3.

[0061] Alternatively, as shown in FIG. 18, four or more connecting rods 41 may be provided, and the multiple connecting rods 41 are connected in series to form an enclosed polygonal structure, and a first included angle is formed between adjacent connecting rods 41. The excitation part 2 and the first fixed part 5 are each connected to the connecting end along the first direction L, and the pressing part 3 is connected to the connecting end along the second direction W, or the excitation part 2 and the first fixed part 5 are each connected to the connecting rod 41 along the first direction L, and the pressing part 3 is connected to the connecting rod 41 along the second direction W. The polygonal structure is connected to the excitation part 2 and the first fixed part 5. A polygonal mechanical part with a stable structure is thus formed, so that the structural stability of the vibration part 4 is improved. When the pressing part 3 presses to move the rotor 6, the elliptical movement orbit does not deviate due to insufficient stability to reduce the stability of the movement of the rotor 6.

[0062] Regardless of which of the above structural attachments is used for the connecting rods 41, the lengths of the connecting rods 41 may be the same or different. For the first included angle formed between the connecting rods 41, the first included angle is a non-zero included angle, and the included angle can meet the allowable change range for the first included angle when the required elliptical movement orbit is formed under the action of vibration at different frequencies. This is not particularly limited in this specification. In addition, for the specified first included angle, based on the specific structure of the attachment between the connecting rods 41, the preferred range of the first included angle of the vibrating part 4 in different structures may also be different, so as to make the specified first included angle in the case of different structures guarantee the structural stability of the vibrating part 4 and adjust the first included angle at low frequencies to reduce energy consumption. This is not particularly limited in this specification.

[0063] Optionally, for the structure of the provided connecting rods 41, the multiple connecting rods are rotatably connected, so that the mounting structure between the provided connecting rods 41 makes the first included angle change more smoothly to reduce the energy consumption when connecting the connecting rods 41. In this mounting structure of the rotatable connection, a certain stability of the connection between the connecting rods 41 is required, so that the connecting rods 41 are not easily deformed. Therefore, the rotatable connection may be arranged as a stable structure that is not easily deformed excessively during rotation. Alternatively, in a miniaturized motor, the range of motion of the rotor 6 driven by the stator is not large, so that the change range of the connecting rods 41 and the first included angle is small when the provided vibrating part 4 forms an elliptical moving orbit through deformation. Therefore, the multiple connecting rods 41 may be provided as an integrally molded metal piece. The metal connecting rod 41 has a certain deformation ability, so that the elastic deformation of the metal piece corresponding to the connecting rod 41 meets the requirement.

[0064] In this specification, the provided second fixed part 1, excitation part 2, vibration part 4, and first fixed part 5 may be connected in full contact, may be connected by using multiple connection points and link mechanism 44 (as shown in FIG. 18), or may be connected in another manner that can be implemented. This is not particularly limited in this specification. In addition, the number and mounting positions of the provided second fixed part 1, excitation part 2, vibration part 4, and first fixed part 5 may be combined accordingly based on the number and mounting positions of the provided rotor 6, so as to drive the rotor 6 under different miniaturization conditions. As shown in FIG. 15, when the internal space and the position of the rotor 6 are limited, the rotor 6 cannot be provided on the upper or lower side of the stator or covered on the stator, and only the position for the rotor 6 is reserved at the center position. In order to implement stable and highly accurate control over the movement of the rotor 6 in this space, the above-mentioned differently portable vibration parts 4 may be provided on the upper and lower sides of the rotor 6, and the first fixed part 5 may be fastened to the upper and lower sides, respectively, to connect to the different vibration parts 4 (or one first fixed part 5 is fastened to both vibration parts 4, as shown in Fig. 13 and Fig. 14). In order to enable the two vibration parts 4 on the upper and lower sides to form a mirror elliptical moving orbit for driving and moving the rotor 6, the two vibration parts 4 may be connected to the same excitation part 2 to drive the rotor 6 at a central position. Alternatively, a stator formed by two or more groups of the second fixed part 1, the excitation part 2, the vibration part 4, and the first fixed part 5 may be connected to form a new stator. In this mounting structure, the excitation part 2 and the pressing part 3 are connected between two groups of the second fixed part 1, the vibration part 4, and the first fixed part 5 connected (as shown in Fig. 17). With this structural mounting, when the corresponding component is bent out of the plane formed by the vibrating part 4, strong shear stresses are generated between the component and the pressing part 3 and the excitation part 2. The shear stresses return the component to its original plane, thereby limiting the out-of-plane rocking motion. In addition, due to the symmetry of the design, such out-of-plane resonant modes are not easily excited. In addition, the pressing part 3may be made entirely of wear-resistant material directly instead of using coating methods, which also enhances the wear prevention ability in this embodiment.

[0065] The present application further provides a specific implementation form. As shown in FIG. 3 and FIG. 4, the excitation unit 2 is frequency ), and the space occupied in the mounting of the drive structure can be reduced in a simple driving mode, so as to realize the single-phase drive of the excitation unit 2, the excitation unit 2 includes a body 21 and a drive unit. The body 21 is configured to connect to the vibration unit 4. The drive unit is connected to the body 21 and configured to drive the body 21 to vibrate in a single-phase mode. The drive unit has a preset vibration frequency, and under the action of the preset vibration frequency, the vibration of the body 21 is capable of vibrating the vibration unit 4 along at least the first direction L and the second direction W. The preset vibration frequency is a frequency mode obtained through experiments, in which an elliptical movement trajectory can be formed at a required position (the position where the pressing unit 3 is provided) in the corresponding structural mounting of the excitation unit 2, the vibration unit 4, and the first fixed unit 5. The preset vibration frequency is changed according to different mounting and movement requirements of the rotor 6 based on different actual conditions, on the premise that the pressing unit 3 can form a required elliptical movement trajectory. This is not particularly limited in the present specification.

[0066] Specifically, for the provided driving unit, which serves as a power supply unit for driving the body 21 to vibrate accordingly based on the required frequency mode, and in order to make the body 21 connected to the driving unit have a good vibration effect, the driving unit is connected to at least one side of the body 21 along the second direction W, so that the driving unit directly converts the vibration energy and transmits it to the body 21. In the fixed connection method through bonding or other direct contact mounting, the vibration can be maximally transmitted to the body 21, and the structural stability of the connection between the driving unit and the body 21 is high. During vibration, the driving unit is not easily removed from the body 21. In addition, in order to reduce the loss of vibration transmitted to the body 21, the body 21 may be provided as a hollowed-out structure, and the driving unit is provided with a protruding or non-protruding in the hollowed-out structure (as shown in FIG. 1). In this mounting method, the stability of the vibration is improved when the vibration is transmitted to the body 21, thereby ensuring a good vibration effect. It should be emphasized herein that the specific structure of the body 21 may be provided as a combination of several different structures according to requirements, such as a hollowed-out structure, an integral plate-like structure, or several linear structures, as shown in Figures 5, 6, 7, and 8. This is not particularly limited herein.

[0067] Optionally, for the connected first fixed part 5, main body 21, vibration part 4, and second fixed part 1, all parts may be located on the same plane, as shown in FIG. 11. Specifically, the connecting rod 41 with the first included angle and the pressing part 3 used in the vibration part all extend toward the rotor 6 located at least partially on the plane, so that the part where the vibration part 4 contacts the rotor 6 performs a corresponding elliptical motion on the plane, and the rotor 6 is driven to reciprocate. Alternatively, as shown in FIG. 19 and FIG. 20, the provided vibration part 4 and the pressing part 3 connected to the vibration part 4 may extend along an out-of-plane direction through at least partial deformation after being connected to the corresponding first fixed part 5 and corresponding main body 21 on the plane, so that the pressing part 3 abuts the rotor 6 on another plane. That is, the vibration part 4 and / or the pressing part 3 partially protrude from the plane so as to be at least partially coplanar with the main body 21, the fixed part, etc. Therefore, the specific structural mounting of the vibration part 4 and the pressing part 3, as well as the connection with the body 21, the fixed part, etc., can be adaptively adjusted based on different position layouts of the rotor 6 in the drive assembly, different elliptical movement trajectories required, different vibration amplitudes and vibration directions of the vibration part 4, etc. This is not particularly limited in the present specification.

[0068] More specifically, to enable the driving unit to convert electrical energy into vibrations of a required frequency mode, the driving unit includes a deformable part 22 and an electric current part 23. The deformable part 22 is connected to the body 21, and the deformable part 22 may be connected to the body 21 through a joint. The deformable part 22 is deformable after being energized. The electric current part 23 is connected to the deformable part 22, and electricity generated by the electric current part 23 can be transmitted to the deformable part 22. The electric current part 23 can generate an electric field at a frequency after being energized, and the deformable part 22 is deformed under the action of the electric field to drive the body 21 to vibrate at a preset vibration frequency, such that the body 21 is deformed by contraction or expansion along the first direction L (i.e., the deformation of the deformable part 22 can drive the body 21 to perform a corresponding deformation motion). In addition, a pulling or pushing force for reciprocating motion is applied to the vibrating part 4, so that the vibrating part 4 vibrates along the first direction L and the second direction W under the restriction by the corresponding fixed part. The provided deformable part 22 can be deformed to different degrees based on the electric frequency of the current-carrying part 23, so that the connected body 21 vibrates accordingly. The provided deformable part 22 is made of an electrostrictive material, such as a piezoelectric material, a magnetostrictive material, or a shape memory alloy, which is not particularly limited in this specification. In order to make the deformable part 22 deformable after being energized, a current-carrying part 23 is provided, and an electrical connection can be realized when the current-carrying part 23 is connected to a power source.

[0069] As shown in FIG. 3, the one or more current-carrying parts 23 and the deformable parts 22 provided may constitute a piezoelectric patch, and electrodes may be connected to the two outermost surfaces of the piezoelectric patch, respectively. The electrodes are connected to both ends of the driving device. The driving may be performed using a sine wave, a square wave, a triangular wave, a trapezoidal wave, etc. This is not limited. A sine wave is preferred. However, for the specific structural mounting of the connection between the electrode and the driving device, for example, whether a single-ended driving or a double-ended driving is performed, the specific structure is adjusted accordingly based on different circumstances. This is not particularly limited in the present specification.

[0070] Optionally, as shown in Fig. 12 and Fig. 13, for the provided second fixed part 1, main body 21, vibration part 4, and first fixed part 5, when the vibration part 4 is provided in the structure of annular mechanical part 43 or connecting rod 41, which may be deformable by structural attachment (as shown in Fig. 6 and Fig. 11), the vibration part 4 is provided as a metal sheet, metal rod, or other structure, so as to enable the vibration part 4 to have a good deformation effect, in which the deformation of the vibration part 4 is a micro deformation, and to fully transmit the vibration force, when the vibration part 4 is connected to the main body 21, the first fixed part 5, and the second fixed part 1, in order to ensure that the structure is stable and not easily damaged, all parts are provided as metal pieces, and all parts are molded integrally.

[0071] The above metal pieces may be directly connected or may be connected using another structure, such as the link mechanism 44. When the metal pieces are connected using a connector similar to the link mechanism 44, the stiffness of the connection between the excitation part 2, the vibration part 4, and the first fixed part 5 may be reduced. When the excitation part 2 transmits vibration, the vibration transmission effect may be better with this structural attachment compared with the direct contact-based large-area surface connection with high stiffness.

[0072] However, please note that parts of this patent application document contain copyrighted material. The copyright holder reserves the copyright, except for making copies of the patent documents or the record contents of the patent documents with the State Intellectual Property Office of China. [Explanation of symbols]

[0073] 1 Second fixed part 2 Excitation section 21 Main unit 22 Transformable part 23 Electrical section 3 Pressing part 4. Vibration section 41 Connecting rod 411 V-shaped 42 Elastic part 43 Circular Machine Parts 431 Interior wall 44 Connecting Rod 5 First fixed part 6 Rotor

Claims

1. A drive assembly, the drive assembly comprising a stator and a rotor (6), the stator configured to drive the rotor (6) into motion, the stator comprising: An excitation unit (2); A vibration part (4) connected to the excitation part (2); and a first fixed portion (5), the first fixed portion (5) being connected to the vibration portion (4), the vibration portion (4) being located between the excitation portion (2) and the first fixed portion (5) along a first direction L; a pressing unit (3) connected to the vibration unit (4) and the rotor (6); the excitation unit (2) can vibrate, the excitation unit (2) can drive the vibration unit (4) to act, and under the restriction of the first fixed unit (5), the vibration unit (4) can vibrate at least along the first direction L and the second direction W such that the pressing unit (3) pushes the rotor (6) to move it along the first direction L; the first fixing portion (5) is configured to limit the movement distance of the pressing portion (3) along the first direction L and the second direction W by using the vibration portion (4); the vibration portion (4) is deformable, and under the restriction of the first fixed portion (5), the vibration of the excitation portion (2) can deform the vibration portion (4) at least along the first direction L and the second direction W, and the pressing portion (3) is provided at a position within the vibration portion (4) that is deformable along the first direction L and the second direction W; The vibration part (4) comprises two or more connecting rods (41), at least two adjacent connecting rods (41) are connected to form a connecting end, one of the two or more connecting rods (41) is connected to the excitation part (2), and another of the two or more connecting rods (41) is connected to the first fixed part (5); A drive assembly, wherein the cross-sectional area of ​​the connecting rod (41) gradually increases along the axial direction of the connecting rod (41) in a direction away from the connection end.

2. The vibration portion (4) is an elastic portion (42), and the vibration portion (4) is elastically deformable at least along the first direction L and the second direction W; 2. The drive assembly according to claim 1, wherein the pressing portions (3) are provided at both ends of the elastic portion (42) in the elastic deformation direction.

3. There is a first included angle between the connected connecting rods, When the excitation part (2) vibrates, the first included angle can increase or decrease so that the vibration part (4) can deform; 2. The drive assembly according to claim 1, wherein the pressing portion (3) is provided at a position close to the connection end.

4. There are two connecting rods (41), said connecting rods (41) being connected to form a V-shaped (411) structure to form said first included angle; The two connecting rods (41) are connected to the excitation part (2) and the first fixed part (5), respectively; 4. A drive assembly as claimed in claim 3, wherein the pressing part (3) is connected to the connection end.

5. There are three connecting rods (41), said connecting rods (41) being connected in sequence to form an open structure; Two outermost connecting rods (41) are connected to the excitation part (2) and the first fixed part (5), respectively; 4. A drive assembly according to claim 3, wherein the pressing part (3) is connected to the centrally located connecting rod (41).

6. There are four or more connecting rods (41), said connecting rods (41) being connected in series to form an enclosed polygonal structure; The excitation portion (2) and the first fixing portion (5) are each connected to the connection end portion along the first direction L, and the pressing portion (3) is connected to the connection end portion along the second direction; or 4. The drive assembly according to claim 3, wherein the excitation part (2) and the first fixed part (5) are each connected to the connecting rod (41) along the first direction L, and the pressing part (3) is connected to the connecting rod (41) along the second direction.

7. A drive assembly according to any one of claims 3 to 6, wherein said plurality of connecting rods (41) are integrally formed.

8. 7. The drive assembly according to claim 1, wherein the pressing portion (3) is a convex structure extending from the vibration portion (4) along the second direction W, the convex structure being capable of pressing the rotor (6) back and forth along the first direction L.

9. The stator further comprises a second fixed part (1) configured to allow vibrations of the excitation part (2) to act on the vibration part (4), 7. A drive assembly according to claim 1, wherein along the first direction L, the second fixed part (1) is connected to a side of the excitation part (2) remote from the vibration part (4), and the distance between the first fixed part (5) and the second fixed part (1) is fixed.

10. The excitation unit (2) A body (21), the body (21) being configured to be connected to the vibration part (4); a drive unit connected to the body (21) and configured to drive the body (21) into vibration in a single-phase mode; 7. The drive assembly according to claim 1, wherein the drive part has a preset vibration frequency, under the action of the preset vibration frequency, the vibration of the body (21) is capable of vibrating the vibration part (4) at least along the first direction L and the second direction W.

11. The drive assembly according to claim 10, wherein the drive part is connected to at least one side of the body (21) along the second direction W.

12. The drive unit is a deformable part (22), the deformable part (22) being connected to the body (21), the deformable part (22) being deformable after being energized; an electric current carrying portion (23) connected to the deformable portion (22), and electricity generated by the electric current carrying portion (23) can be transmitted to the deformable portion (22); 11. The drive assembly of claim 10, wherein the current-carrying part (23) is capable of generating an electric field at the preset frequency, and the deformable part (22) is deformed under the action of the electric field to drive the body into vibration.

13. 12. The drive assembly according to claim 11, wherein the body (21), the vibrating part (4) and the first fixed part (5) are integrally formed.

14. A motor, the motor comprising a drive assembly, the drive assembly being a drive assembly according to any one of claims 1 to 13.

15. A terminal comprising a motor, the motor being a motor according to claim 14.

Images