Linear ultrasonic motor vibrator

Abstract

The utility model discloses a linear ultrasonic motor vibrator, the outer surface of the vibrator is partially or completely formed by a rotary body structure, the vibrator is provided with a main body and connecting parts located at the two ends of the main body, the vibrator is of a symmetrical structure, the connecting parts are symmetrically arranged at the two ends of the main body, and the connecting parts are connected with the main body. The included angle between the connecting portion and the body is larger than or equal to 90 degrees and smaller than 180 degrees. The outer surface of the linear ultrasonic motor vibrator is partially or completely formed by the rotary body structure, the structure is symmetrical, simple and reliable, the linear ultrasonic motor vibrator can be manufactured in a turn-milling machining mode, machining modes similar to linear cutting and the like are avoided, the machining difficulty of the vibrator is remarkably reduced, and the machining efficiency of the vibrator is improved. The processing time required by the oscillator is shortened, and the processing efficiency is improved.

Description

Technical Field

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

[0002] Ultrasonic motors are drivers that use mechanical vibrations in the ultrasonic frequency domain as a driving source. They use electrical energy to generate ultrasonic vibrations to obtain driving force, and convert power into the movement of the rotor or slider through friction coupling. Compared with traditional motors, 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. Ultrasonic motors also have the characteristics of light weight, simple structure, high efficiency, low noise, low speed and high torque, and can directly drive loads. Since the load is driven directly, the vibration noise, gap, low efficiency, and difficult control problems caused by the use of gear speed change are avoided. Therefore, ultrasonic motors are a new automatic control actuator and a new transmission mode. They are a breakthrough and a powerful supplement to the traditional electromagnetic drive principle.

[0003] The linear ultrasonic motor is a widely used ultrasonic motor. The linear ultrasonic motor uses the inverse piezoelectric effect of piezoelectric materials to excite its micro-vibration at the resonant frequency of the elastic metal matrix, and then transmits the micro-vibration to the mover through friction coupling, thereby causing the mover to move linearly. The advantages of the linear ultrasonic motor over the electromagnetic motor are: the linear ultrasonic motor does not require electromagnetic windings, so the structure is compact and easy to miniaturize; the vibrator module of the linear ultrasonic motor transfers kinetic energy to the mover through friction, so it has strong anti-electromagnetic interference ability and has power-off self-locking ability.

[0004] The vibrator structure of the current linear ultrasonic motor is relatively complex and needs to be processed by wire cutting and other methods, which is not only difficult to process but also time-consuming. Therefore, it is urgent to design a new type of linear ultrasonic motor vibrator to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a linear ultrasonic motor vibrator to solve the problems of the existing linear ultrasonic motor vibrator, such as complex structure, great processing difficulty, long processing time and low efficiency.

[0006] The utility model provides a linear ultrasonic motor vibrator, wherein part or all of the outer surface of the vibrator is formed by a rotating body structure, and the vibrator has a main body and connecting parts located at two ends of the main body, wherein the vibrator is a symmetrical structure, the connecting parts are symmetrically arranged at two ends of the main body, and the angle between the connecting parts and the main body is greater than or equal to 90° and less than 180°.

[0007] Optionally, the profile of the vibrator includes any one of a spindle shape and a shuttle shape.

[0008] Optionally, the body of the vibrator is connected from the middle to the two ends connected to the connecting portion by a smooth curved surface, and the diameter of the body of the vibrator decreases from the middle to the two ends connected to the connecting portion.

[0009] Optionally, an angle between the connecting portion and the main body is greater than or equal to 130° and less than or equal to 170°.

[0010] Optionally, the main body includes two frustums arranged opposite to each other, the two frustums have the same size, the lower bases of the two frustums are connected, the upper bases of the two frustums are respectively connected to the two connecting parts, the diameter of the bottom surface of the connecting part is the same as the diameter of the upper base surface of the frustum, the diameter of the lower base surface is larger than the diameter of the upper base surface, and the side surface of the frustum is a driving foot.

[0011] Optionally, the main body includes a cylinder and two cones located opposite to each other at both ends of the cylinder, the lower bases of the two cones are respectively connected to the two bottom surfaces of the cylinder and the diameter of the lower base of the cone is the same as the bottom surface of the cylinder, the upper bases of the two cones are respectively connected to the two connecting parts, the diameter of the bottom surface of the connecting part is the same as the diameter of the upper base of the cone, the diameter of the lower base is larger than the diameter of the upper base, and the side surface of the cylinder is a driving foot.

[0012] Optionally, a first through hole is further included, and the first through hole passes through from one end of the vibrator to the other end along the central axis of the vibrator.

[0013] Optionally, it also includes a second through hole, which is located in the connecting part, the axis of the second through hole is perpendicular to the axis of the first through hole, the center of the second through hole is located on the central axis of the vibrator, and the second through hole passes through the side of the connecting part and is connected with the first through hole in the connecting part.

[0014] Optionally, the side of the main body where the connecting portion is not provided further includes a first cutting surface and a second cutting surface, the first cutting surface is symmetrical to the second cutting surface and is arranged opposite to each other, and the first cutting surface and the second cutting surface are both perpendicular to the axis of the second through hole.

[0015] Optionally, the main body also includes a third through hole, which is located in the middle area of ​​the first cutting surface, the axis of the third through hole is perpendicular to the first cutting surface and connects the first cutting surface and the second cutting surface, and the center of the third through hole is located on the central axis of the vibrator.

[0016] Optionally, there is a preset distance between the second through hole and the third through hole, and the second through hole has a positioning function or has the functions of both positioning and adjusting the working mode of the vibrator.

[0017] Optionally, the main body further includes a third cutting surface formed by subtractive machining of the main body, the third cutting surface is a plane, the third cutting surface is located in the driving foot area, and the plane where the third cutting surface is located is perpendicular to the plane where the first cutting surface is located.

[0018] Optionally, a fourth through hole is provided between the third through hole and the second through hole, the axis of the fourth through hole is parallel to the axis of the third through hole, the center of the fourth through hole is located on the central axis of the vibrator, and the fourth through hole is used to adjust the working mode of the linear ultrasonic motor vibrator module.

[0019] The linear ultrasonic motor vibrator provided by the utility model has an outer surface partially or entirely formed by a rotating body structure, and its structure is symmetrical, simple and reliable, so that the linear ultrasonic motor vibrator can be manufactured by turning and milling, avoiding processing methods such as wire cutting, significantly reducing the processing difficulty of the vibrator, shortening the processing time required for the vibrator, and improving the processing efficiency.

[0020] Furthermore, the structural design of the rotating body enables the vibrator to have an arched structure on the side corresponding to the driving foot, which has a stronger load-bearing capacity and can effectively improve the load-bearing capacity of the corresponding linear ultrasonic motor.

[0021] Furthermore, the linear ultrasonic motor vibrator can also perform subtractive processing on the main body in the corresponding orientation according to space requirements to reduce the thickness of the vibrator in a specific direction. The driving foot can also be milled to form a third cutting surface to increase the contact area and enhance the driving capability and operation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 A three-dimensional diagram of a linear ultrasonic motor vibrator according to a first embodiment of the utility model is shown;

[0024] Figure 2 It shows a front view of a linear ultrasonic motor vibrator according to a first embodiment of the utility model;

[0025] Figure 3 It shows a right side view of the linear ultrasonic motor vibrator of the first embodiment of the utility model;

[0026] Figure 4A cross-sectional view of a linear ultrasonic motor vibrator according to a first embodiment of the utility model is shown;

[0027] Figure 5 A partially enlarged schematic diagram of a cross-sectional view of a linear ultrasonic motor vibrator according to a first embodiment of the utility model is shown;

[0028] Figure 6 A perspective view of a linear ultrasonic motor vibrator according to a second embodiment of the utility model is shown;

[0029] Figure 7 A front view of a linear ultrasonic motor vibrator according to a second embodiment of the utility model is shown;

[0030] Figure 8 It shows a right side view of the linear ultrasonic motor vibrator of the second embodiment of the utility model;

[0031] Fig. 9 A cross-sectional view of a linear ultrasonic motor vibrator according to a second embodiment of the utility model is shown;

[0032] Fig.10 A three-dimensional diagram of a linear ultrasonic motor vibrator according to a third embodiment of the present utility model is shown;

[0033] Fig.11 It shows a right side view of the linear ultrasonic motor vibrator of the third embodiment of the utility model;

[0034] Fig.12 A top view of a linear ultrasonic motor vibrator according to a third embodiment of the utility model is shown;

[0035] Fig.13 A three-dimensional diagram of a linear ultrasonic motor vibrator according to a fourth embodiment of the utility model is shown;

[0036] Fig.14 A front view of a linear ultrasonic motor vibrator according to a fourth embodiment of the present utility model is shown;

[0037] Fig.15 A cross-sectional view of a linear ultrasonic motor vibrator according to a fourth embodiment of the utility model is shown;

[0038] Fig.16 A front view of a linear ultrasonic motor vibrator according to a fifth embodiment of the utility model is shown;

[0039] Fig.17 A front view of a linear ultrasonic motor vibrator according to a sixth embodiment of the utility model is shown. DETAILED DESCRIPTION

[0040] The present invention will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, the same parts 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.

[0041] It should be understood that when describing a structure, when a structure or a region is referred to as being "on" or "over" another structure or region, it may mean that it is directly on the other structure or region, or that other structures or regions are included between it and the other structure or region. Furthermore, if the part is turned over, the part or region will be "below" or "beneath" the other structure or region.

[0042] If the purpose is to describe the situation of being directly on another structure or another area, this article will use the expression "directly on..." or "on... and adjacent to...".

[0043] 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.

[0044] The present invention may be embodied in various forms, some examples of which will be described below.

[0045] Figure 1 The three-dimensional diagram of the linear ultrasonic motor vibrator of the first embodiment of the utility model is shown; the linear ultrasonic motor vibrator of the first embodiment includes a main body 110 and a connecting portion 120 located at both ends of the main body 110 and symmetrically arranged. The overall profile of the vibrator is a rotating structure similar to a spindle or shuttle, so that the vibrator can be directly processed by a lathe. The vibrator is used to drive a tubular mover, for example. Further, the vibrator is a symmetrical structure and also includes a first through hole 121. The first through hole 121 passes through from one end of the vibrator to the other end along the central axis of the vibrator, that is, the first through hole 121 not only passes through the main body 110 but also passes through the connecting portions 120 at both ends. The vibrator also includes a second through hole 122 perpendicular to the first through hole 121. The second through hole 122 is located at the connecting portion 120, for example. The second through holes 122 on the two connecting portions 120 are used to fix the vibrator, for example. Specifically, the first through hole 121 and the second through hole 122 are both circular through holes.

[0046] See also Figure 2The front view of the vibrator of the first embodiment is shown, and the vibrator body 110 includes a central cylinder 111 and a frustum 112 arranged opposite to each other at both ends of the cylinder 111. The dotted line in the figure is, for example, the central axis of the vibrator. Specifically, the lower bottom surfaces of the two frustums 112 (the bottom surface on the side with a larger area) are respectively connected to the two bottom surfaces of the cylinder 111, and the lower bottom surface of the frustum 112 has the same diameter as the bottom surface of the cylinder 111. The upper bottom surfaces of the two frustums 112 (the bottom surface on the side with a smaller area) are respectively connected to the bottom surfaces of two connecting parts 120. The connecting part 120 is, for example, also cylindrical, and the diameter of the bottom surface of the connecting part 120 is the same as the diameter of the upper bottom surface of the frustum 112, and the diameter of the lower bottom surface is larger than the diameter of the upper bottom surface. The main body 110 of the vibrator can be formed by rotating a combination of a rectangle and a trapezoid along the central axis. Similarly, the cylindrical connecting part 120 can also be formed by rotating a rectangle along the central axis. Figure 3 It is a right side view of the vibrator of the first embodiment. Since the overall outline of the vibrator is a body of revolution, the main body 110 and the connecting portion 120 in the right side view are both circular, and the first through hole 121 is located at the center of the circle.

[0047] Figure 4 The vibrator of the first embodiment of the utility model is shown along Figure 2 The cross-sectional view taken along the AA section line. Figure 5 for Figure 4 The partially enlarged schematic diagram of the dotted line frame is as follows: Figure 4 As shown, the vibrator is symmetrical in both vertical and horizontal directions. The main body 110 and the connecting portion 120 of the vibrator are, for example, an integrated design. The first through hole 121 completely penetrates from one end of the vibrator to the other end of the vibrator along the central axis of the vibrator. The axis of the second through hole 122 is perpendicular to the axis of the first through hole 121 and the second through hole 122 is connected to the first through hole 121 inside the vibrator. Figure 5 Some details of the connection between the main body 110 and the connecting part 120 of the vibrator can be seen in FIG. Figure 5 As shown, the angle between AB and BC is, for example, greater than or equal to 90° and less than 180°; the angle between DE and EF is equal to the angle between AB and BC, for example, also greater than or equal to 90° and less than 180°. This angle range allows the vibrator with a profile of a body of revolution to be obtained by turning. Preferably, the angle between AB and BC is, for example, greater than or equal to 130° and less than or equal to 170°; the angle between DE and EF is equal to the angle between AB and BC, for example, also greater than or equal to 130° and less than or equal to 170°.

[0048] Figures 6 to 9 The three-dimensional view, front view, right view and cross-sectional view of the linear ultrasonic motor vibrator of the second embodiment of the utility model are respectively shown; the linear ultrasonic motor vibrator of the second embodiment is further processed by subtractive processing on the basis of the first embodiment, and the vibrator also has a symmetrical structure.

[0049] Specifically, Figure 6 As shown, the side of the main body 110 where the connecting portion 120 is not provided is milled in a plane perpendicular to the axis of the second through hole 122 to form a first cutting surface 113. Similarly, a second cutting surface 114 is formed on the side opposite to the first cutting surface 113 ( Figure 8 and Fig. 9 ), the first cutting surface 113 and the second cutting surface 114 are symmetrically and parallelly arranged. By forming the first cutting surface 113 and the second cutting surface 114, the thickness of the vibrator can be reduced in the direction perpendicular to the first cutting surface 113 to reduce the space occupied by it. Further, in the middle position of the first cutting surface 113, a third through hole 115 perpendicular to the first cutting surface 113 is formed by drilling. The third through hole 115, for example, penetrates the body 110 of the vibrator and connects the first cutting surface 113 with the second cutting surface 114. The third through hole 115, for example, is located at the center of the body 110 and the first through hole 121 is connected to the third through hole 115 on both sides of the third through hole 115. See Figure 7 The first cutting surface 113 is a plane, and the cross section of the third through hole 115 is, for example, circular. The axis of the third through hole 115 is parallel to the axis of the second through hole 122, and the centers of the second through hole 122 and the third through hole 115 are both located on the central axis of the vibrator.

[0050] Will Figure 8 and Figure 3 By comparison, it can be clearly seen that the vibrator of the second embodiment has a first cutting surface 113 and a second cutting surface 114 formed by material reduction processing, so that the thickness of the vibrator is significantly reduced, and the space occupied by the vibrator is reduced. Furthermore, the mover corresponding to the vibrator of the second embodiment is, for example, Figure 8 The upper and lower sides of the middle vibrator (the upper and lower side surfaces of the cylinder 111) are in contact with the vibrator.

[0051] Fig. 9 Shows Figure 7 The sectional view of the vibrator of the second embodiment taken along the section line BB is shown in FIG. Figure 4 In comparison, the second embodiment reduces the thickness of the vibrator by providing a first cutting surface 113 perpendicular to the second through hole 122 and a second cutting surface 114 opposite thereto. The second embodiment also provides a third through hole 115 at the center of the first cutting surface 113. The axis of the third through hole 115 is parallel to the axis of the second through hole 122. The third through hole 115 completely penetrates the body 110 of the vibrator and connects the first cutting surface 113 and the second cutting surface 114. The function of the third through hole 115 is to weaken the stiffness of the vibrator and increase the amplitude of the vibrator.

[0052] Figures 10 to 12The three-dimensional view, right side view and top view of the linear ultrasonic motor vibrator of the third embodiment of the utility model are respectively shown; the linear ultrasonic motor vibrator of the third embodiment is further processed by subtractive processing based on the second embodiment, and the vibrator is also a symmetrical structure. Figures 10 to 12 As can be seen, the difference between the third embodiment and the second embodiment is that the side surfaces of the upper and lower sides of the cylinder 111 of the main body 110 of the vibrator are milled, for example, to form a third cutting surface 116, and the third cutting surface 116 is, for example, a plane. Of course, if a structure in contact with the vibrator is only provided on one side of the vibrator, only one third cutting surface 116 can be provided. The driving foot in the second embodiment is the side surface of the cylinder 111, which is an arc surface, and the contact mode between the driving foot and the contact structure is point contact or line contact; while in the third embodiment, by further processing the cylinder 111, a plane third cutting surface 116 is formed as the driving foot, so that the contact mode between the vibrator and the contact structure becomes surface contact, the contact area is increased, and the self-locking ability of the linear ultrasonic motor using the vibrator is increased. The third cutting surface 116 is located in the side area of ​​the cylinder 111, and the plane where the third cutting surface 116 is located is perpendicular to the plane where the first cutting surface 113 is located. The third cutting surface 116 is formed by subtracting at least part of the side surface of the cylinder 111 and the side surface of the truncated cone 112.

[0053] Further, see Fig.11 In the right view shown, taking the third cutting surface 116 above the vibrator as an example, the third cutting surface 116 serves as a driving foot, and both sides thereof are arc-shaped. Since part of the outer surface of the vibrator is formed by a rotating body structure, in the cross section of the vibrator perpendicular to the third cutting surface 116, both sides thereof are arc-shaped. In the cross section, the third cutting surface 116 and the arcs on its left and right sides form an arch structure. Compared with a rectangle and a trapezoid, the arch structure enables the third cutting surface 116 to withstand greater pressure, thereby improving the load capacity of the linear ultrasonic motor having the vibrator.

[0054] Figures 13 to 15 The three-dimensional view, front view and cross-sectional view of the fourth embodiment of the linear ultrasonic motor vibrator of the utility model are respectively shown; the linear ultrasonic motor vibrator of the fourth embodiment is further processed on the basis of the third embodiment, and the vibrator is also a symmetrical structure. Figures 13 to 15It can be seen that the difference between the fourth embodiment and the third embodiment is that a fourth through hole 117 is added between the third through hole 115 and the second through hole 122, the axis of the fourth through hole 117 is parallel to the axis of the third through hole 115, the cross section of the fourth through hole 117 is also circular, the center of the fourth through hole 117 and the center of the third through hole 115 are both located on the central axis of the vibrator, and the two fourth through holes 117 are symmetrically arranged on both sides of the third through hole 115, for example, and the fourth through holes 117 are used to adjust the working mode of the linear ultrasonic motor vibrator. Specifically, when the frequency difference between the two modes of the linear ultrasonic motor vibrator is large, by adding two fourth through holes 117 on both sides of the third through hole 115, the frequency difference between the two modes of the vibrator can be effectively reduced, thereby reducing the driving difficulty. See. Fig.15 In the cross-sectional view, the fourth through hole 117 is similar to the second through hole 122, and the fourth through hole 117 is also connected to the first through hole 121. The fourth through hole 117 is located on the first cutting surface 113 and the second cutting surface 114 of the main body 110 of the vibrator, and the fourth through hole 117 also completely penetrates the main body 110 of the vibrator. Further, in order to meet the function of adjusting the working mode of the vibrator, the fourth through hole 117 in the fourth embodiment has a specific spacing with the third through hole 115, and the cross-sectional area of ​​the fourth through hole 117 is smaller than the second through hole 122 and the third through hole 115, but is not limited thereto. Of course, in certain cases, the fourth through hole 117 may not be provided, and the second through hole 122 may also have the function of adjusting the working mode of the vibrator while serving as a positioning hole.

[0055] Fig.16 and Fig.17 The front views of the linear ultrasonic motor vibrator of the fifth and sixth embodiments of the utility model are respectively shown, and the vibrator is also a symmetrical structure; wherein the main body 110 of the vibrator is connected from the middle to the two ends connected to the connecting part 120 by smooth curved surfaces, and the diameter of the main body 110 of the vibrator decreases from the middle to the two ends connected to the connecting part 120. In the first to fourth embodiments, the side surface of the truncated cone 112 in the main body 110 decreases along a straight line in the front view. Fig.16 As shown, in the fifth embodiment, Figure 2 Different from the first embodiment shown in the figure, the main body 110 of the vibrator may not include the cylinder 111. Furthermore, the side of the main body 110 in the front view does not decrease along a straight line, but decreases along a convex arc. Similarly, Fig.17 As shown, in the sixth embodiment, the main body 110 includes a cylinder 111, and the side surfaces of the main body on both sides of the cylinder 111 present a concave and gradually decreasing arc in the main view.

[0056] The utility model provides a linear ultrasonic motor vibrator, in which part or all of the outer surface of the linear ultrasonic motor vibrator is formed by a rotating body structure, so that the linear ultrasonic motor vibrator can be manufactured by turning and milling, avoiding processing methods such as wire cutting, significantly reducing the processing difficulty of the vibrator, shortening the processing time required for the vibrator, and improving the processing efficiency.

[0057] Furthermore, the structural design of the rotating body enables the vibrator to have an arched structure on the side corresponding to the driving foot, which has a stronger load-bearing capacity and can effectively improve the load-bearing capacity of the corresponding linear ultrasonic motor.

[0058] Furthermore, the linear ultrasonic motor vibrator can also perform subtractive processing on the main body in the corresponding orientation according to space requirements to reduce the thickness of the vibrator in a specific direction. The driving foot can also be milled to form a third cutting surface to increase the contact area and enhance the driving capability and operation stability.

[0059] In the above description, the technical details such as the position and processing method of each through hole and cutting surface are not described in detail. However, those skilled in the art should understand that the required through holes and cutting surfaces can be formed by various technical means. 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, it does not mean that the measures in each embodiment cannot be used in combination advantageously.

[0060] 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 vibrator, characterized in that: Part or all of the outer surface of the vibrator is formed by a rotating body structure, and the vibrator has a main body and connecting parts located at both ends of the main body, wherein the vibrator is a symmetrical structure, the connecting parts are symmetrically arranged at both ends of the main body, and the angle between the connecting parts and the main body is greater than or equal to 90° and less than 180°.

2. The linear ultrasonic motor vibrator according to claim 1, characterized in that: The profile of the vibrator includes any one of a spindle shape and a shuttle shape.

3. The linear ultrasonic motor vibrator according to claim 1, characterized in that: The main body of the vibrator is connected from the middle to the two ends connected to the connecting part through a smooth curved surface, and the diameter of the main body of the vibrator decreases from the middle to the two ends connected to the connecting part.

4. The linear ultrasonic motor vibrator according to claim 1, characterized in that: An included angle between the connecting portion and the main body is greater than or equal to 130° and less than or equal to 170°.

5. The linear ultrasonic motor vibrator according to claim 1, characterized in that: The main body includes two frustums arranged opposite to each other, the two frustums have the same size, the lower bottom surfaces of the two frustums are connected, the upper bottom surfaces of the two frustums are respectively connected to the two connecting parts, the diameter of the bottom surface of the connecting part is the same as the diameter of the upper bottom surface of the frustum, the diameter of the lower bottom surface is larger than the diameter of the upper bottom surface, and the side surface of the frustum is a driving foot.

6. The linear ultrasonic motor vibrator according to claim 1, characterized in that: The main body includes a cylinder and two frustums located at opposite ends of the cylinder, the lower bottom surfaces of the two frustums are respectively connected to the two bottom surfaces of the cylinder and the diameter of the lower bottom surface of the frustum is the same as the bottom surface of the cylinder, the upper bottom surfaces of the two frustums are respectively connected to the two connecting parts, the diameter of the bottom surface of the connecting part is the same as the diameter of the upper bottom surface of the frustum, the diameter of the lower bottom surface is larger than the diameter of the upper bottom surface, and the side surface of the cylinder is a driving foot.

7. The linear ultrasonic motor vibrator according to any one of claims 1 to 6, characterized in that: It also includes a first through hole, which passes through from one end of the vibrator to the other end along the central axis of the vibrator.

8. The linear ultrasonic motor vibrator according to claim 7, characterized in that: It also includes a second through hole, which is located in the connecting part, the axis of the second through hole is perpendicular to the axis of the first through hole, the center of the second through hole is located on the central axis of the vibrator, and the second through hole passes through the side of the connecting part and is connected with the first through hole in the connecting part.

9. The linear ultrasonic motor vibrator according to claim 8, characterized in that: The side surface of the main body without the connecting portion further includes a first cutting surface and a second cutting surface, the first cutting surface and the second cutting surface are symmetrical and opposite to each other, and the first cutting surface and the second cutting surface are both perpendicular to the axis of the second through hole.

10. The linear ultrasonic motor vibrator according to claim 9, characterized in that: The main body also includes a third through hole, which is located in the middle area of ​​the first cutting surface. The axis of the third through hole is perpendicular to the first cutting surface and connects the first cutting surface and the second cutting surface. The center of the third through hole is located on the central axis of the vibrator.

11. The linear ultrasonic motor vibrator according to claim 10, characterized in that: There is a preset distance between the second through hole and the third through hole, and the second through hole has a positioning function or has a function of both positioning and adjusting the working mode of the vibrator.

12. The linear ultrasonic motor vibrator according to claim 9, characterized in that: The main body also includes a third cutting surface formed by subtractive machining of the main body, the third cutting surface is a plane, the third cutting surface is located in the driving foot area, and the plane where the third cutting surface is located is perpendicular to the plane where the first cutting surface is located.

13. The linear ultrasonic motor vibrator according to claim 10, characterized in that: A fourth through hole is also provided between the third through hole and the second through hole, the axis of the fourth through hole is parallel to the axis of the third through hole, the center of the fourth through hole is located on the central axis of the vibrator, and the fourth through hole is used to adjust the working mode of the linear ultrasonic motor vibrator module.

Images