Linear ultrasonic motor frame module and linear ultrasonic motor

Abstract

The utility model discloses a linear ultrasonic motor frame module and a linear ultrasonic motor. The linear ultrasonic motor frame module comprises a first fixing structure and a second fixing structure, the bottom shell is located below the first fixing structure and the second fixing structure, and the first fixing structure, the second fixing structure and the bottom shell are relatively fixed; the clamping unit is located on the inner side of the second fixing structure, the two ends of the clamping unit are connected with the first fixing structure, an elastic piece is arranged between the clamping unit and the second fixing structure, and the elastic piece applies pressure to the clamping unit so that the clamping unit can make contact with a driving foot of the linear ultrasonic motor vibrator module. And the oscillator module is clamped. According to the linear ultrasonic motor, the frame module is integrally designed, the structure of the linear ultrasonic motor is simplified, and the linear ultrasonic motor is simple and easy to use.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and more specifically, to a linear ultrasonic motor frame module and a linear ultrasonic motor. Background Art

[0002] Piezoelectric linear ultrasonic motor is a kind of friction-coupled piezoelectric actuator. It uses the inverse piezoelectric effect of piezoelectric materials to excite the micro-vibration of the elastic body, and converts the reciprocating micro-motion of the elastic body into the macroscopic unidirectional linear motion or rotational motion of the actuating object through friction. Compared with traditional motors, piezoelectric linear ultrasonic motors have small inertia, fast response, good controllability, are not affected by magnetic fields, and do not generate magnetic fields themselves, and have high positioning accuracy. Piezoelectric linear ultrasonic motors also have the characteristics of light weight, simple structure, high efficiency, low noise, low speed and high torque, and can directly drive the load. Due to the direct drive of the load, the vibration noise, gap, low efficiency, and difficult control problems caused by the use of gear speed change are avoided. Therefore, the piezoelectric linear ultrasonic motor is a new automatic control actuator and a new transmission mode. It is a breakthrough and powerful supplement to the traditional electromagnetic drive principle.

[0003] Compared with traditional electromagnetic linear ultrasonic motors, piezoelectric linear ultrasonic motors have the advantages of fast moving speed, fast response speed, power-off self-locking, compact structure and easy miniaturization. In the field of photography, especially in scenes such as cameras, it has good application prospects. Therefore, it is urgent to design a new type of linear ultrasonic motor to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a linear ultrasonic motor frame module and a linear ultrasonic motor to meet the existing demand for cameras, simplify the structure of the linear ultrasonic motor, and make it simple in structure and easy to use.

[0005] According to one aspect of the utility model, a linear ultrasonic motor frame module is provided, which includes: a first fixed structure and a second fixed structure; a bottom shell, located below the first fixed structure and the second fixed structure, the first fixed structure, the second fixed structure and the bottom shell are relatively fixed; one or two clamping units, the clamping unit is located on the inner side of the second fixed structure, the two ends of the clamping unit are respectively connected to the first fixed structure, an elastic member is arranged between the clamping unit and the second fixed structure, the elastic member applies pressure to the clamping unit so that the clamping unit contacts the driving foot of the linear ultrasonic motor vibrator module, and the vibrator module is clamped.

[0006] Optionally, the first fixed structure includes two end covers, and the second fixed structure includes two side panels, the two end covers are located at both ends of the linear ultrasonic motor frame module, the two end covers are arranged opposite to each other, the two side panels are arranged opposite to each other, and the two ends of the side panels are respectively connected to the end covers.

[0007] Optionally, the clamping unit includes: two support rods, each end of which is respectively provided with a first connecting hole and a second connecting hole, and the axis of the first connecting hole and the axis of the second connecting hole are both parallel to the first fixed structure; two hinge shafts, one end of each hinge shaft is connected to the hinge hole of the second fixed structure, and the other end of each hinge shaft is connected to the first connecting hole of the support rod; a contact shaft, each end of which is respectively connected to the second connecting holes of the two support rods, and the contact shaft can rotate in the second connecting hole, and the axis of the contact shaft is parallel to the first fixed structure, and a contact surface is provided on the side of the contact shaft facing the driving foot of the linear ultrasonic motor vibrator module.

[0008] Optionally, the contact surface is a plane, the contact surface is parallel to the axis of the contact shaft, and the cross-sectional shape of the contact shaft along a surface parallel to the surface where the second fixing structure is located is an arcuate shape.

[0009] In the above-mentioned linear ultrasonic motor frame module, the support rod also has a receiving groove, the elastic member is partially located in the receiving groove, one end of the elastic member is located in the receiving groove, and the other end of the elastic member is connected to the first fixing structure.

[0010] Optionally, the accommodating groove is located at one side of the second connecting hole, and the elastic member provides pressure for the support rod to rotate around the hinge axis in the direction of the linear ultrasonic motor vibrator module.

[0011] Optionally, the elastic member includes at least one of a coil spring and a leaf spring.

[0012] Optionally, the pressure applied to the linear ultrasonic motor vibrator module is changed by changing the elastic force of the elastic member.

[0013] Optionally, a guide rod is further included, wherein the guide rod is located above the bottom shell and the axis of the guide rod is parallel to the first fixing structure, and both ends of the guide rod are respectively connected to the second fixing structure.

[0014] Optionally, the first fixing structure and the bottom shell are an integral structure or a separate structure.

[0015] According to another aspect of the utility model, a linear ultrasonic motor is provided, comprising: a linear ultrasonic motor frame module, the linear ultrasonic motor frame module comprising a first fixed structure and a second fixed structure; a bottom shell, located below the first fixed structure and the second fixed structure, the first fixed structure, the second fixed structure and the bottom shell being relatively fixed; one or two clamping units, the clamping unit being located on the inner side of the second fixed structure, the two ends of the clamping unit being respectively connected to the first fixed structure, an elastic member being arranged between the clamping unit and the second fixed structure, the elastic member applying pressure to the clamping unit so that the clamping unit contacts the driving foot of the linear ultrasonic motor vibrator module. , clamping the vibrator module; a linear ultrasonic motor vibrator module, located above the bottom shell, the linear ultrasonic motor vibrator module is located between the first fixed structures, and the driving foot of the linear ultrasonic motor vibrator module is in contact with the clamping unit; a fixed module, connected to the linear ultrasonic motor vibrator module; wherein the linear ultrasonic motor frame module also includes a guide rod, the linear ultrasonic motor vibrator module is slidably connected to the guide rod through the fixed module, the linear ultrasonic motor vibrator module can move along the axial direction of the guide rod, and the clamping unit provides a pressure perpendicular to the axial direction of the guide rod to the linear ultrasonic motor vibrator module to ensure the contact between the driving foot and the clamping unit.

[0016] Optionally, the first fixed structure includes two end covers, and the second fixed structure includes two side panels, the two end covers are located at both ends of the linear ultrasonic motor frame module, the two end covers are arranged opposite to each other, the two side panels are arranged opposite to each other, and the two ends of the side panels are respectively connected to the end covers.

[0017] Optionally, the clamping unit includes: two support rods, each end of which is respectively provided with a first connecting hole and a second connecting hole, and the axis of the first connecting hole and the axis of the second connecting hole are both parallel to the first fixed structure; two hinge shafts, one end of each hinge shaft is connected to the hinge hole of the second fixed structure, and the other end of each hinge shaft is connected to the first connecting hole of the support rod; a contact shaft, each end of which is respectively connected to the second connecting holes of the two support rods, and the contact shaft can rotate in the second connecting hole, and the axis of the contact shaft is parallel to the first fixed structure, and a contact surface is provided on the side of the contact shaft facing the driving foot of the linear ultrasonic motor vibrator module.

[0018] Optionally, the contact surface is a plane, the contact surface is parallel to the axis of the contact shaft, and the cross-sectional shape of the contact shaft along a surface parallel to the surface where the second fixing structure is located is an arcuate shape.

[0019] In the above-mentioned linear ultrasonic motor, the support rod further has a receiving groove, the elastic member is partially located in the receiving groove, one end of the elastic member is located in the receiving groove, and the other end of the elastic member is connected to the first fixing structure.

[0020] Optionally, the accommodating groove is located at one side of the second connecting hole, and the elastic member provides pressure for the support rod to rotate around the hinge axis in the direction of the linear ultrasonic motor vibrator module.

[0021] Optionally, the elastic member includes at least one of a coil spring and a leaf spring.

[0022] Optionally, the pressure applied to the linear ultrasonic motor vibrator module is changed by changing the elastic force of the elastic member.

[0023] Optionally, the guide rod is located above the bottom shell and the axis of the guide rod is parallel to the first fixing structure, and both ends of the guide rod are respectively connected to the second fixing structure.

[0024] Optionally, the fixing module includes an upper cover and a base, and the upper cover and the base respectively fix the linear ultrasonic motor vibrator module from the upper and lower sides of the linear ultrasonic motor vibrator module, and the upper cover is provided with a guide sleeve corresponding to the guide rod, and the linear ultrasonic motor vibrator module is connected to the guide rod through the guide sleeve.

[0025] Optionally, the upper cover is further provided with a bayonet, and the bayonet is connected to the lens of the camera.

[0026] Optionally, it also includes a circuit board and a flexible connecting line, the circuit board is electrically connected to the linear ultrasonic motor vibrator module, one end of the flexible connecting line is connected to the circuit board, and the other end of the flexible connecting line extends from the bottom shell to be connected to the outside world.

[0027] Optionally, the first fixing structure and the bottom shell are an integral structure or a separate structure.

[0028] The linear ultrasonic motor frame module and linear ultrasonic motor provided by the utility model, by integrating the scattered and complex linear ultrasonic motor frame into an integrated design, not only simplifies the structure of the linear ultrasonic motor frame module, reduces the number of parts, but also makes the linear ultrasonic motor easier to use. Specifically, the two ends of the contact shaft are connected to the end covers by a hinged manner, and the contact shaft can rotate along its axis, so that the contact surface of the linear ultrasonic motor frame module has an adaptive function within a certain range, and no manual intervention adjustment is required, and sufficient contact and pressure between the contact surface and the driving foot can be guaranteed. Furthermore, a complete linear ultrasonic motor can be formed by combining the linear ultrasonic motor vibrator module, the fixing module and the linear ultrasonic motor frame module. Since the linear ultrasonic motor adopts an integrated frame module, its structure is more compact and easy to miniaturize the product, and it has a good application prospect in the application fields such as cameras. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings.

[0030] Figure 1 A schematic diagram of a linear ultrasonic motor according to an embodiment of the utility model is shown;

[0031] Figure 2 A top view of a linear ultrasonic motor according to an embodiment of the utility model is shown;

[0032] Figure 3 The front view of the linear ultrasonic motor according to the embodiment of the utility model is shown;

[0033] Figure 4 The right side view of the linear ultrasonic motor according to the embodiment of the utility model is shown;

[0034] Figure 5 A bottom view of the linear ultrasonic motor according to an embodiment of the utility model is shown;

[0035] Figure 6 A cross-sectional view of the linear ultrasonic motor according to an embodiment of the utility model taken along the AA cross-sectional line is shown;

[0036] Figure 7 A cross-sectional view of the linear ultrasonic motor according to an embodiment of the utility model taken along the BB cross-sectional line is shown. DETAILED DESCRIPTION

[0037] The present invention will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, the same elements are represented by similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not drawn to scale. In addition, some well-known parts may not be shown.

[0038] It should be understood that when describing a structure, when a component or a region is referred to as being "on" or "over" another component or region, it may mean that it is directly on the other component or region, or that other components or regions are included between it and the other component or region. Furthermore, if the part is turned over, the component or region will be "below" or "under" the other component or region.

[0039] If it is intended to describe a situation where a component or region is directly on another component or region, this document will use the expression “directly on” or “on and adjacent to”.

[0040] Many specific details of some embodiments of the present invention are described below, such as the structure, materials, dimensions, processing techniques and technologies of the components, so as to more clearly understand the present invention. However, as those skilled in the art will appreciate, the present invention may be implemented without following these specific details.

[0041] The present invention may be embodied in various forms, some examples of which will be described below.

[0042] Figure 1A schematic diagram of a linear ultrasonic motor according to an embodiment of the utility model is shown; the linear ultrasonic motor includes a frame module and a linear ultrasonic motor vibrator module located in the frame module, wherein the linear ultrasonic motor frame module includes: an end cover 110, a side plate 120, a clamping unit 130, a bottom shell 140 and a guide rod 150. The two end covers 110 serve as the first fixed structure, and the two side panels 120 serve as the second fixed structure. The first fixed structure and the second fixed structure form a rectangular frame. The two end covers 110 are respectively located at the two ends of the frame module, and the two side panels 120 are arranged opposite to each other. The two ends of the side panels 120 are respectively connected to the end covers 110. The guide rod 150 is perpendicular to the two end covers 110 and parallel to the two side panels 120. The clamping unit 130 is, for example, located on the inner side of the side panel 120. Specifically, two clamping units 130 can be respectively arranged on the inner sides of the two side panels 120 to clamp the linear ultrasonic motor vibrator module from both sides. Of course, the clamping unit 130 can also be arranged on the inner side of only one side panel 120 to clamp the linear ultrasonic motor vibrator module from one side. The end cover 110 is also provided with a hinge hole 111, through which the clamping unit 130 is connected to the end cover 110; the bottom shell 140 is located below the end cover 110 and the side plate 120 and is connected to the end cover 110, and the bottom shell 140 includes a bottom frame 141 and a bottom cover 142. The bottom shell 140 can be used as a dust cover to shield and protect the bottom of the frame module. The bottom shell 140 can also receive the friction debris generated between the vibrator module and the clamping unit 130 when the linear ultrasonic motor is running, so as to prevent the debris from falling outside the linear ultrasonic motor. One end of the flexible connecting wire (not shown in the figure) is electrically connected to the vibrator module (not shown in the figure) in the frame module, and the other end extends from the opening of the bottom cover 142 to be connected to the external driving power supply. The vibrator module of the linear ultrasonic motor is connected to the guide rod 150 in the frame module through the fixing module 300, so that it can move along the guide rod 150. Furthermore, the two end covers 110 serving as the first fixed structure can also be designed as an integrated structure with the bottom shell 140. Through the above changes, the number of components of the linear ultrasonic motor frame structure of this embodiment can be significantly reduced, reducing the difficulty of assembly and improving production efficiency.

[0043] See also Figure 2 and Figure 3As shown in the top view and the front view, in the linear ultrasonic motor frame module, the two end covers 110 are arranged opposite to each other, the two side panels 120 are arranged opposite to each other, and the two ends of the side panels 120 are respectively connected to the end covers 110. Specifically, the two end covers 110 are arranged on the inner sides of the two side panels 120, and the two end covers 110 and the two side panels 120 form a frame shape. The bottom frame 141 is located below the end covers 110 and the side panels 120 and is connected thereto, and the bottom cover 142 is located below the bottom frame 141 and is connected to the bottom frame 141. A guide rod fixing hole corresponding to the guide rod 150 is provided at the upper end of the end cover 110, and a clamping unit 130 is provided on the inner side of the side plate 120. The linear ultrasonic motor vibrator module 200 is located between the two side plates 120 and is clamped by the clamping unit 130. The clamping unit 130 is in contact with the driving foot of the linear ultrasonic motor vibrator module 200 and has a pressure pointing in the direction of the linear ultrasonic motor vibrator module 200 to ensure close contact between the driving foot and the clamping unit 130.

[0044] Figure 4 and Figure 5 The right side view and the bottom view of the linear ultrasonic motor are shown respectively. Each end cover 110 is symmetrically provided with two hinge holes 111 in the area near the bottom plate 140. Each clamping unit 130 is connected to the two end covers 110 through the hinge holes 111 on the two end covers 110. The bottom cover 142 is provided with an opening 1421, and the flexible connecting line (not shown in the figure) is connected to the external driving power source through the opening 1421. It can be understood that if there is only one clamping unit 130, only one hinge hole 111 is provided on each end cover 110.

[0045] Figure 6 and Figure 7 The Figure 2 The section line AA in Figure 3 The cross-sectional view taken along the section line BB in Figure 6 and Figure 7The specific composition structure of the clamping unit 130 in the linear ultrasonic motor frame module and the fixing method of the linear ultrasonic motor vibrator module 200 can be shown. Specifically, the linear ultrasonic motor vibrator module 200 is, for example, located between the two clamping units 130, and the fixing module 300 includes an upper cover 310 and a base 320, and the upper cover 310 and the base 320 clamp and fix the linear ultrasonic motor vibrator module 200 from the upper and lower sides, and the base 320 is, for example, provided with a threaded hole, and the upper cover 310 and the base 320 are connected, for example, by bolts; the upper cover 310 is also provided with a guide sleeve 311 corresponding to the guide rod 150, and the guide rod 150 is inserted into the guide sleeve 311 of the upper cover 310, so that the linear ultrasonic motor vibrator module 200 is connected to the guide rod 150, so that the linear ultrasonic motor vibrator module 200 can move along the axial direction of the guide rod 150. The upper cover 310 is also provided with a bayonet 312, and the bayonet 312 is used to connect the lens of the camera. A circuit board 400 is disposed below the base 320. The linear ultrasonic motor vibrator module 200 is electrically connected to the circuit board 400 and is connected to an external driving power source through a flexible connection line (not shown) extending from an opening 1421 of the bottom cover 142. A single clamping unit 130 includes two support rods 131, two hinge shafts 132, and a contact shaft 133. The two support rods 131 are respectively located at the inner sides of the two end covers 110 and correspond to the end covers 110. One end of each support rod 131 is hinged to the hinge hole 111 of the end cover 110 through the hinge shaft 132, so that the support rod 131 can rotate around the hinge shaft 132. The two ends of the contact shaft 133 are respectively connected to the other ends of the two support rods 131. The contact shaft 133 can also rotate along the axis of the contact shaft 133. The side of the contact shaft 133 facing the linear ultrasonic motor vibrator module 200 is used as a contact surface to contact the driving foot of the linear ultrasonic motor vibrator module 200. Specifically, if the contact surface is not in contact with the driving foot, the elastic force provided by the elastic member 134 will press the contact shaft 133 toward the driving foot, and the contact shaft 133 will rotate due to unbalanced force. When the contact surface is in contact with the driving foot, the contact shaft 133 stops rotating due to balanced force. This design enables the contact surface of the linear ultrasonic motor frame module to have an adaptive function within a certain range, and no manual intervention adjustment is required, and sufficient contact and pressure between the contact surface and the driving foot can be ensured.

[0046] See also Figure 7The linear ultrasonic motor vibrator module 200 is located between the two side plates 120 , and the driving feet on both sides thereof are in contact with the two clamping units 130 on the inner sides of the two side plates 120 . Specifically, the support rod 131 of the clamping unit 130 includes a first connecting hole located at the bottom and a second connecting hole located at the top, one end of the hinge shaft 132 is connected to the hinge hole 111 of the end cover 110, and the other end of the hinge shaft 132 is connected to the first connecting hole of the support rod 131, so that the support rod 131 can rotate along the axis of the hinge shaft 132 (as shown by the solid arrow in the figure), one end of the hinge shaft 132 and the hinge hole 111 of the end cover 110 are, for example, an interference fit, and the other end of the hinge shaft 132 and the first connecting hole of the support rod 131 are, for example, a clearance fit; the second connecting hole of the support rod 131 is, for example, a circular hole, and both ends of the contact shaft 133 are inserted into the second connecting hole to be fixed, the contact shaft 133 and the second connecting hole are, for example, a clearance fit, the contact shaft 133 is, for example, a cylinder with an arched cross-section, and the diameter of the contact shaft 133 is, for example, the same as the first The inner diameters of the two connecting holes match, the axis of the contact shaft 133 is parallel to the guide rod 150, the contact shaft 133 can rotate in the second connecting hole of the support rod 131, and the side of the contact shaft 133 facing the linear ultrasonic motor vibrator module 200 is a contact surface, and the contact surface is, for example, a plane, and the contact surface is, for example, parallel to the axis of the contact shaft 133. The cross-sectional shape of the contact shaft 133 along the surface parallel to the end cover 110 is an arch (major arc arch, semicircular arc arch or inferior arc arch). By adopting a flat contact surface, it can better contact with the driving foot of the linear ultrasonic motor vibrator module 200. Furthermore, through the design of the contact shaft 133 and the second connecting hole matching it, the contact shaft 133 can be relatively rotated relative to the support rod 131, so that the contact surface can be adjusted to achieve adaptive matching with the linear ultrasonic motor vibrator module 200. Furthermore, an elastic member 134 is provided on the side of the support rod 131 facing the inner side of the side plate 120, one end of the elastic member 134 is connected to the support rod 131, and the other end is in contact with the inner side of the side plate 120. Specifically, a receiving groove 135 can be provided at the corresponding position of the support rod 131 and the elastic member 134, so that at least part of the elastic member 134 is located in the receiving groove 135 to prevent the elastic member 134 from falling out. The elastic member 134 is, for example, a coil spring or a leaf spring. By making the elastic member 134 in a compressed state, the elastic member 134 can provide an elastic force perpendicular to the side plate 120 inward (as shown by the hollow arrow) to the side where the second connecting hole in the support rod 131 is located, so that the support rod 131 rotates around the hinge shaft 132 toward the side of the linear ultrasonic motor vibrator module 200, providing pressure to the linear ultrasonic motor vibrator module 200, and ensuring that the contact surface of the contact shaft 133 is in close contact with the driving foot of the linear ultrasonic motor vibrator module 200. Furthermore, when the elastic member is a coil spring, its elastic force can be adjusted by changing the wire diameter and length of the coil spring, thereby adjusting its pressure.

[0047] The linear ultrasonic motor frame module and linear ultrasonic motor provided by the utility model, by integrating the scattered and complex linear ultrasonic motor frame into an integrated design, not only simplifies the structure of the linear ultrasonic motor frame module, reduces the number of parts, but also makes the linear ultrasonic motor easier to use. Specifically, the two ends of the contact shaft are connected to the end covers by a hinged manner, and the contact shaft can rotate along its axis, so that the contact surface of the linear ultrasonic motor frame module has an adaptive function within a certain range, and no manual intervention adjustment is required, and sufficient contact and pressure between the contact surface and the driving foot can be guaranteed. Furthermore, a complete linear ultrasonic motor can be formed by combining the linear ultrasonic motor vibrator module, the fixing module and the linear ultrasonic motor frame module. Since the linear ultrasonic motor adopts an integrated frame module, its structure is more compact and easy to miniaturize the product, and it has a good application prospect in the application fields such as cameras.

[0048] In the above description, the technical details such as the position combination and connection mode of each component are not described in detail. However, those skilled in the art should understand that various technical means can be used to form the required connection relationship, etc. In addition, in order to have the same function, those skilled in the art can also design a structure that is not completely the same as the structure described above. In addition, although each embodiment is described above separately, this does not mean that the measures in each embodiment cannot be used in combination to advantage.

[0049] The embodiments of the present invention are described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Without departing from the scope of the present invention, a person skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present invention.

Claims

1. A linear ultrasonic motor frame module, wherein: include: a first fixed structure and a second fixed structure; A bottom shell, located below the first fixing structure and the second fixing structure, wherein the first fixing structure, the second fixing structure and the bottom shell are relatively fixed; One or two clamping units, the clamping unit is located on the inner side of the second fixed structure, the two ends of the clamping unit are respectively connected to the first fixed structure, an elastic member is arranged between the clamping unit and the second fixed structure, the elastic member applies pressure to the clamping unit so that the clamping unit contacts the driving foot of the linear ultrasonic motor vibrator module, thereby clamping the vibrator module.

2. The linear ultrasonic motor frame module according to claim 1, characterized in that: The first fixing structure includes two end covers, and the second fixing structure includes two side plates. The two end covers are located at both ends of the linear ultrasonic motor frame module. The two end covers are arranged opposite to each other, and the two side plates are arranged opposite to each other. The two ends of the side plates are respectively connected to the end covers.

3. The linear ultrasonic motor frame module according to claim 1, characterized in that: The clamping unit comprises: Two support rods, each end of which is provided with a first connection hole and a second connection hole, respectively, and the axis of the first connection hole and the axis of the second connection hole are both parallel to the first fixing structure; Two hinge shafts, one end of each hinge shaft is connected to the hinge hole of the second fixing structure, and the other end of each hinge shaft is connected to the first connecting hole of the support rod; A contact shaft, wherein both ends of the contact shaft are respectively connected to the second connecting holes of the two support rods, the contact shaft can rotate in the second connecting holes, the axis of the contact shaft is parallel to the first fixed structure, and a contact surface is arranged on the side of the contact shaft facing the driving foot of the linear ultrasonic motor vibrator module.

4. The linear ultrasonic motor frame module according to claim 3, characterized in that: The contact surface is a plane, the contact surface is parallel to the axis of the contact shaft, and the cross-sectional shape of the contact shaft along the surface parallel to the second fixing structure is an arcuate shape.

5. The linear ultrasonic motor frame module according to claim 3, characterized in that: The support rod also has a receiving groove, the elastic member is partially located in the receiving groove, one end of the elastic member is located in the receiving groove, and the other end of the elastic member is connected to the first fixing structure.

6. The linear ultrasonic motor frame module according to claim 5, characterized in that: The receiving groove is located at one side of the second connecting hole, and the elastic member provides pressure for the support rod to rotate around the hinge axis in the direction of the linear ultrasonic motor vibrator module.

7. The linear ultrasonic motor frame module according to claim 1, characterized in that: The elastic member includes at least one of a coil spring and a leaf spring.

8. The linear ultrasonic motor frame module according to claim 1, characterized in that: The pressure applied to the linear ultrasonic motor vibrator module is changed by changing the elastic force of the elastic member.

9. The linear ultrasonic motor frame module according to claim 1, characterized in that: It also includes a guide rod, which is located above the bottom shell and has an axis parallel to the first fixing structure. Both ends of the guide rod are respectively connected to the second fixing structure.

10. The linear ultrasonic motor frame module according to claim 1, characterized in that: The first fixing structure and the bottom shell are an integral structure or a separate structure.

11. A linear ultrasonic motor, characterized in that: include: A linear ultrasonic motor frame module, wherein the linear ultrasonic motor frame module comprises a first fixing structure and a second fixing structure; A bottom shell, located below the first fixing structure and the second fixing structure, wherein the first fixing structure, the second fixing structure and the bottom shell are relatively fixed; One or two clamping units, the clamping unit is located inside the second fixing structure, two ends of the clamping unit are respectively connected to the first fixing structure, an elastic member is provided between the clamping unit and the second fixing structure, the elastic member applies pressure to the clamping unit so that the clamping unit contacts the driving foot of the linear ultrasonic motor vibrator module, thereby clamping the vibrator module; A linear ultrasonic motor vibrator module is located above the bottom shell, the linear ultrasonic motor vibrator module is located between the first fixing structures, and a driving foot of the linear ultrasonic motor vibrator module is in contact with the clamping unit; A fixing module connected to the linear ultrasonic motor vibrator module; Among them, the linear ultrasonic motor frame module also includes a guide rod, the linear ultrasonic motor vibrator module is slidably connected to the guide rod through the fixing module, the linear ultrasonic motor vibrator module can move along the axial direction of the guide rod, and the clamping unit provides pressure perpendicular to the axial direction of the guide rod to the linear ultrasonic motor vibrator module to ensure the contact between the driving foot and the clamping unit.

12. The linear ultrasonic motor according to claim 11, characterized in that: The first fixing structure includes two end covers, and the second fixing structure includes two side plates. The two end covers are located at both ends of the linear ultrasonic motor frame module. The two end covers are arranged opposite to each other, and the two side plates are arranged opposite to each other. The two ends of the side plates are respectively connected to the end covers.

13. The linear ultrasonic motor according to claim 11, characterized in that: The clamping unit comprises: Two support rods, each end of which is provided with a first connection hole and a second connection hole, respectively, and the axis of the first connection hole and the axis of the second connection hole are both parallel to the first fixing structure; Two hinge shafts, one end of each hinge shaft is connected to the hinge hole of the second fixing structure, and the other end of each hinge shaft is connected to the first connecting hole of the support rod; A contact shaft, wherein both ends of the contact shaft are respectively connected to the second connecting holes of the two support rods, the contact shaft can rotate in the second connecting holes, the axis of the contact shaft is parallel to the first fixed structure, and a contact surface is arranged on the side of the contact shaft facing the driving foot of the linear ultrasonic motor vibrator module.

14. The linear ultrasonic motor according to claim 13, characterized in that: The contact surface is a plane, the contact surface is parallel to the axis of the contact shaft, and the cross-sectional shape of the contact shaft along the surface parallel to the second fixing structure is an arcuate shape.

15. The linear ultrasonic motor according to claim 13, characterized in that: The support rod also has a receiving groove, the elastic member is partially located in the receiving groove, one end of the elastic member is located in the receiving groove, and the other end of the elastic member is connected to the first fixing structure.

16. The linear ultrasonic motor according to claim 15, characterized in that: The receiving groove is located at one side of the second connecting hole, and the elastic member provides pressure for the support rod to rotate around the hinge axis in the direction of the linear ultrasonic motor vibrator module.

17. The linear ultrasonic motor according to claim 11, characterized in that: The elastic member includes at least one of a coil spring and a leaf spring.

18. The linear ultrasonic motor according to claim 11, characterized in that: The pressure applied to the linear ultrasonic motor vibrator module is changed by changing the elastic force of the elastic member.

19. The linear ultrasonic motor according to claim 11, characterized in that: The guide rod is located above the bottom shell and the axis of the guide rod is parallel to the first fixing structure. Both ends of the guide rod are respectively connected to the second fixing structure.

20. The linear ultrasonic motor according to claim 11, characterized in that: The fixing module includes an upper cover and a base, and the upper cover and the base respectively fix the linear ultrasonic motor vibrator module from the upper and lower sides of the linear ultrasonic motor vibrator module. The upper cover is provided with a guide sleeve corresponding to the guide rod, and the linear ultrasonic motor vibrator module is connected to the guide rod through the guide sleeve.

21. The linear ultrasonic motor according to claim 20, characterized in that: The upper cover is also provided with a bayonet, and the bayonet is connected to the lens of the camera.

22. The linear ultrasonic motor according to claim 11, characterized in that: It also includes a circuit board and a flexible connecting line. The circuit board is electrically connected to the linear ultrasonic motor vibrator module. One end of the flexible connecting line is connected to the circuit board, and the other end of the flexible connecting line extends from the bottom shell to be connected to the outside.

23. The linear ultrasonic motor according to claim 11, characterized in that: The first fixing structure and the bottom shell are an integral structure or a separate structure.

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