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 supporting structure; a first fixing structure and a second fixing structure; the bottom shell is located below the supporting structure, the first fixing structure and the second fixing structure, and the first fixing structure, the second fixing structure, the supporting structure and the bottom shell are relatively fixed; the clamping units are located on the inner side of the first fixing structure, one side of each clamping unit makes contact with a driving foot of the linear ultrasonic motor vibrator module, and the other side of each clamping unit is provided with a supporting face opposite to the first fixing structure; the supporting surface is connected with the supporting structure in a side edge area corresponding to the supporting structure, an elastic piece is arranged between the supporting surface and the first fixing structure, and pressure is applied to the linear ultrasonic motor vibrator module by the clamping unit through the elastic piece. Through the integrated design of the frame structure, 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 piezoelectric 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 supporting structure; a first fixed structure and a second fixed structure; a bottom shell, located below the supporting structure, the first fixed structure and the second fixed structure, the first fixed structure, the second fixed structure, the supporting structure and the bottom shell are relatively fixed; one or two clamping units, the clamping unit is located on the inner side of the first fixed structure, one side of the clamping unit is in contact with the driving foot of the linear ultrasonic motor vibrator module, and the other side of the clamping unit has a supporting surface opposite to the first fixed structure; the supporting surface is connected to the supporting structure at a side area corresponding to the supporting structure, and an elastic member is also arranged between the supporting surface and the first fixed structure, and the clamping unit applies pressure to the linear ultrasonic motor vibrator module through the elastic member.

[0006] Optionally, the first fixing structure includes two side panels, the second fixing structure includes two end covers, and the supporting structure includes a bottom frame; the two side panels are both located above the bottom frame, and the two side panels are arranged opposite to each other; the two end covers are respectively connected to the two ends of the side panels and fix the bottom frame and the side panels.

[0007] Optionally, the first fixing structure includes two side panels, the second fixing structure includes two end covers, and the supporting structure includes two supporting blocks; each side panel is located above a supporting block, and the two side panels are arranged opposite to each other; the two end covers are respectively connected to the two ends of the side panels and fix the supporting blocks and the side panels.

[0008] Optionally, the elastic member includes at least one of a coil spring and a leaf spring.

[0009] Optionally, the clamping unit includes: a support frame, wherein the side of the support frame facing the first fixed structure is the support surface, and limiting rings are arranged at both ends of the support frame away from the support surface; a contact shaft, wherein both ends of the contact shaft are inserted into the limiting rings, and the contact shaft can rotate in the limiting rings, and the axis of the contact shaft is parallel to the support surface, and the side of the contact shaft facing the driving foot of the linear ultrasonic motor vibrator module has a contact surface connected to the driving foot of the linear ultrasonic motor vibrator module.

[0010] Optionally, the contact surface of the contact shaft 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.

[0011] Optionally, the supporting structure is connected to the supporting surface of the clamping unit via a connecting piece to limit the degree of freedom of the clamping unit.

[0012] Optionally, a first boss is provided on the side of the supporting structure corresponding to the first fixing structure, a second boss is provided on the side area of ​​the supporting surface corresponding to the supporting structure, and a first connecting hole and a second connecting hole corresponding to the first boss and the second boss are respectively provided on the connecting plate, and the first boss and the second boss are respectively inserted into the first connecting hole and the second connecting hole to realize the connection between the supporting surface and the supporting structure.

[0013] Optionally, the supporting surface 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.

[0014] Optionally, the accommodating groove is located in a side area of ​​the supporting surface away from the supporting structure.

[0015] 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 supporting surface, and both ends of the guide rod are respectively connected to the second fixing structure.

[0016] Optionally, the second fixing structure and the bottom shell are an integral structure or a separate structure.

[0017] Optionally, the elastic force of the elastic member is adjustable.

[0018] 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 support structure; a first fixed structure and a second fixed structure; a bottom shell, located below the support structure, the first fixed structure and the second fixed structure, the first fixed structure, the second fixed structure, the support structure and the bottom shell are relatively fixed; one or two clamping units, the clamping unit is located on the inner side of the first fixed structure, one side of the clamping unit is in contact with the driving foot of the linear ultrasonic motor vibrator module, and the other side of the clamping unit has a support surface opposite to the first fixed structure; the support surface is connected to the support structure at the side area corresponding to the support structure, and the support surface is in contact with the first fixed structure An elastic member is also arranged between them, and the clamping unit applies pressure to the linear ultrasonic motor vibrator module through the elastic member; the linear ultrasonic motor vibrator module is located above the bottom shell, and 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; the fixing module is connected to the linear ultrasonic motor vibrator module; wherein the linear ultrasonic motor frame module also includes a guide rod, and the linear ultrasonic motor vibrator module is slidably connected to the guide rod through the fixing module, and 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.

[0019] Optionally, the first fixing structure includes two side panels, the second fixing structure includes two end covers, and the supporting structure includes a bottom frame; the two side panels are both located above the bottom frame, and the two side panels are arranged opposite to each other; the two end covers are respectively connected to the two ends of the side panels and fix the bottom frame and the side panels.

[0020] Optionally, the first fixing structure includes two side panels, the second fixing structure includes two end covers, and the supporting structure includes two supporting blocks; each side panel is located above a supporting block, and the two side panels are arranged opposite to each other; the two end covers are respectively connected to the two ends of the side panels and fix the supporting blocks and the side panels.

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

[0022] Optionally, the clamping unit includes: a support frame, wherein the side of the support frame facing the first fixed structure is the support surface, and limiting rings are arranged at both ends of the support frame away from the support surface; a contact shaft, wherein both ends of the contact shaft are inserted into the limiting rings, and the contact shaft can rotate in the limiting rings, and the axis of the contact shaft is parallel to the support surface, and the side of the contact shaft facing the driving foot of the linear ultrasonic motor vibrator module has a contact surface connected to the driving foot of the linear ultrasonic motor vibrator module.

[0023] 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.

[0024] Optionally, the contact surface of the contact shaft 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.

[0025] Optionally, the supporting structure is connected to the supporting surface of the clamping unit via a connecting piece to limit the degree of freedom of the clamping unit.

[0026] Optionally, a first boss is provided on the side of the supporting structure corresponding to the first fixing structure, a second boss is provided on the side area of ​​the supporting surface corresponding to the supporting structure, and a first connecting hole and a second connecting hole corresponding to the first boss and the second boss are respectively provided on the connecting plate, and the first boss and the second boss are respectively inserted into the first connecting hole and the second connecting hole to realize the connection between the supporting surface and the supporting structure.

[0027] Optionally, the supporting surface 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.

[0028] Optionally, the accommodating groove is located in a side area of ​​the supporting surface away from the supporting structure.

[0029] Optionally, the guide rod is located above the bottom shell and the axis of the guide rod is parallel to the supporting surface, and both ends of the guide rod are respectively connected to the second fixing structure.

[0030] Optionally, the second fixing structure and the bottom shell are an integral structure or a separate structure.

[0031] Optionally, the fixing module includes a vibrator module upper cover and a vibrator module base, the vibrator module upper cover and the vibrator module base respectively fix the linear ultrasonic motor vibrator module from the upper and lower sides of the linear ultrasonic motor vibrator module, the vibrator module 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.

[0032] Optionally, the vibrator module upper cover is further provided with a bayonet, and the bayonet is connected to the lens of the camera.

[0033] Optionally, the elastic force of the elastic member is adjustable.

[0034] The linear ultrasonic motor frame module and linear ultrasonic motor provided by the utility model integrate the scattered and complex linear ultrasonic motor frame, which not only simplifies the structure of the linear ultrasonic motor frame module and reduces the number of parts, but also makes the linear ultrasonic motor easier to use. The contact surface of the linear ultrasonic motor frame module has an adaptive function within a certain range, and does not require manual intervention and adjustment, and can also ensure sufficient contact and pressure between the contact surface and the driving foot. 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 field of camera application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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.

[0036] Figure 1 A schematic diagram of a linear ultrasonic motor according to an embodiment of the utility model is shown;

[0037] Figure 2 An exploded schematic diagram of a linear ultrasonic motor according to an embodiment of the utility model is shown;

[0038] Figure 3 A top view of a linear ultrasonic motor according to an embodiment of the utility model is shown;

[0039] Figure 4 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;

[0040] Figure 5 The front view of the linear ultrasonic motor according to the embodiment of the utility model is shown;

[0041] Figure 6The left side view of the linear ultrasonic motor according to the embodiment of the utility model is shown;

[0042] Figure 7 A schematic diagram of a linear ultrasonic motor frame module according to an embodiment of the utility model is shown;

[0043] Figure 8 An exploded schematic diagram of a linear ultrasonic motor frame module according to an embodiment of the utility model is shown;

[0044] Fig. 9 A top view of a linear ultrasonic motor frame module according to an embodiment of the utility model is shown;

[0045] Fig.10 A cross-sectional view of the linear ultrasonic motor frame module according to an embodiment of the utility model is shown along the BB cross-sectional line. DETAILED DESCRIPTION

[0046] 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.

[0047] 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.

[0048] 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”.

[0049] 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.

[0050] The present invention may be embodied in various forms, some examples of which will be described below.

[0051] Figure 1The schematic diagram of the linear ultrasonic motor of the utility model embodiment is shown; the linear ultrasonic motor comprises: a bottom frame 110, a side plate 120, an end cover 130, a clamping unit 140, a guide rod 150, a linear ultrasonic motor vibrator module 200, a fixing module 300, a bottom shell 400 and a flexible connecting line (not shown in the figure), wherein the bottom frame 110 serves as a supporting structure, the two side plates 120 serve as a first fixing structure, the two end covers 130 serve as a second fixing structure and form a linear ultrasonic motor frame module with the bottom shell 400, the clamping unit 140 and the guide rod 150, and the linear ultrasonic motor vibrator module 200. 0 is located in the linear ultrasonic motor frame module, and the bottom shell 400 serves as a dust cover to prevent friction debris between the linear ultrasonic motor vibrator module 200 and the clamping unit 140 (contact shaft 142) from falling outside the linear ultrasonic motor when the linear ultrasonic motor vibrator module 200 is in operation; one end of the flexible connecting line is connected to the linear ultrasonic motor vibrator module 200, and the other end passes through the opening of the bottom shell 400 and is connected to the outside. The linear ultrasonic motor vibrator module 200 is connected to the guide rod 150 in the linear ultrasonic motor frame module through the fixing module 300, so that it can move along the guide rod 150.

[0052] In the linear ultrasonic motor frame module, two side plates 120 are arranged opposite to each other and are both located above the bottom frame 110. End covers 130 are arranged at both ends of the side plates 120, and the two end covers 130 fix the bottom frame 110 and the side plates 120 from both sides of the bottom frame 110. The upper ends of the end covers 130 are provided with guide rod fixing holes corresponding to the guide rods 150. A clamping unit 140 is arranged 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 140. The clamping unit 140 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 140.

[0053] Figure 2 An exploded schematic diagram of the linear ultrasonic motor of an embodiment of the utility model is shown; the exploded diagram can show the detailed structural features of the various components of the linear ultrasonic motor, and the various components in the figure will be described in sequence from bottom to top below.

[0054] The bottom shell 400, for example, has a receiving cavity of a certain depth to accommodate the flexible connecting wire 420. One end of the flexible connecting wire 420 is used to be electrically connected to the linear ultrasonic motor vibrator module 300, and the other end extends from the opening of the bottom shell 400 to be connected to the outside. The bottom shell 400, for example, is rectangular, and a positioning column 410 is provided on the upper surface of one side of its short side. The positioning column 410 corresponds to the positioning hole (not shown in the figure) on the bottom side of the end cover 130.

[0055] The bottom frame 110 is, for example, a rectangular frame, and the middle opening portion thereof is, for example, for the flexible connecting wire 420 to pass through, so that the flexible connecting wire 420 can be connected to the linear ultrasonic motor vibrator module 300. The flexible connecting wire 420 can move in the opening of the bottom frame 110, and the opening size should meet the movement of the linear ultrasonic motor vibrator module 300 within the travel range, and the flexible connecting wire 420 will not interfere with the bottom frame 110. The short sides on the left and right sides of the bottom frame 110 are provided with grooves 111 on the side, and the grooves 111 are, for example, rectangular grooves. Correspondingly, the end cover 130 is provided with a first boss 132 corresponding thereto, and the first boss 132 is also, for example, rectangular. The first boss 132 of the end cover 130 clamps the bottom frame 110 at the groove 111 to achieve positioning and fixing of the bottom frame 110. A guide rod fixing hole 131 is provided at the top of the end cover 130 to fix the guide rod 150. The end cover 130 is also provided with a second boss 133 and a first through hole 134 passing through the end cover 130 on the side facing the bottom frame 110. The second boss 133 is, for example, cylindrical. Both ends of the side plate 120 are bent, and the end surface of the side plate 120 is provided with a first positioning hole 121 corresponding to the second boss 133 and a bolt hole 122 corresponding to the first through hole 134. Specifically, the second bosses 133 are, for example, four in a rectangular array, the two second bosses 133 on the left are arranged up and down to correspond to the first positioning holes 121 of one side plate 120, and the two second bosses 133 on the right are also arranged up and down to correspond to the first positioning holes 121 of the other side plate 120; similarly, the first through holes 134 are, for example, four in a rectangular array, and the rectangle of the first through hole 134 array is located inside the rectangle of the second boss 133 array. Similarly, the two first through holes 134 on the left correspond to the bolt holes 122 of one side plate 120, and the two first through holes 134 on the right correspond to the bolt holes 122 of the other side plate 120. The left and right ends of the two side plates 120 are respectively connected to the two end covers 130, so as to fix the side plates 120 and limit the distance between the two side plates 120. It is understandable that the shapes and positions of the first boss 132, the groove 111, the second boss 133, the first through hole 134, the first positioning hole 121 and the bolt hole 122 are not limited thereto, as long as these structures correspond to each other so that the end cover 130 can be fixed to the side plate 120 and the bottom frame 110. The inner side of both side plates 120 (the side facing the linear ultrasonic motor vibrator module 200) is provided with a clamping unit 140, which contacts the driving foot of the linear ultrasonic motor vibrator module 200 and provides pressure directed to the linear ultrasonic motor vibrator module 200. Of course, the clamping unit 140 can also be provided on the inner side of only one side plate 120, and a fixed contact rod can be provided on the other side, and the pressure can be provided by a single clamping unit 140.

[0056] The linear ultrasonic motor vibrator module 200 is, for example, located between the two clamping units 140, and the fixing module 300 includes a vibrator module upper cover 310 and a vibrator module base 320, which clamp and fix the linear ultrasonic motor vibrator module 200 from the upper and lower sides, and the vibrator module base 320 is, for example, provided with a threaded hole, and the vibrator module upper cover 310 and the vibrator module base 320 are connected, for example, by bolts; the vibrator module 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 vibrator module 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. Further, the vibrator module upper cover 310 is also provided with a bayonet 312, which can be used to connect the lens of the camera.

[0057] Figure 3 and Figure 4 A top view of the linear ultrasonic motor according to an embodiment of the utility model and a cross-sectional view taken along the AA cross-sectional line in the top view are respectively shown; Figure 5 and Figure 6 The front view and left view of the linear ultrasonic motor of the utility model are shown respectively; Figure 3 As can be seen in the figure, the linear ultrasonic motor vibrator module 200 is located between the two side plates 120, and the driving feet 210 on both sides thereof are respectively in contact with the clamping units 140 on the inner sides of the side plates 120. The linear ultrasonic motor vibrator module 200 is connected to the guide rod 150 through the fixing module 300, and the linear ultrasonic motor vibrator module 200 can be driven by the driving feet 210 to move along the axial direction of the guide rod 150. Figure 4 for Figure 3 The schematic cross-section diagram taken along the AA section line in Figure 4 As can be seen in the figure, the linear ultrasonic motor vibrator module 200 can move along the guide rod 150 in the space surrounded by the bottom frame 110, the end cover 130, the side plate 120 and the bottom shell. The linear ultrasonic motor vibrator module 200 is clamped and fixed from the upper and lower sides by the vibrator module upper cover 310 and the vibrator module base 320. The conductive sheet in the linear ultrasonic motor vibrator module 200 is electrically connected to the circuit board (not shown). One end of the flexible connection line 420 passes through the opening of the bottom shell 400 and is electrically connected to the circuit board. The flexible connection line 420 is, for example, S-shaped, and the other end thereof extends from the opening of the bottom shell 400 to connect to the outside world. The linear ultrasonic motor vibrator module 200 is connected to the guide rod 150 through the vibrator module upper cover 310, so that the linear ultrasonic motor vibrator module 200 is suspended in the air. The driving foot of the linear ultrasonic motor vibrator module 200 contacts the clamping unit 140, and the driving foot drives the linear ultrasonic motor vibrator module 200 to move relative to the clamping unit 140 along the axial direction of the guide rod 150. From Figure 6As can be seen, the end cover 130 has a first through hole 134, and the bolt passes through the first through hole 134 and is connected to the bolt hole 122 on the end face of the side plate 120, thereby fixing the end cover 130 to the side plate 120. The bottom shell 400 is located below the end cover 130, the side plate 120 and the bottom frame 110. Similarly, the bolt passes through the through holes on the left and right sides of the end cover 130 in a direction perpendicular to the plane of the bottom frame 110 and is connected to the bottom shell 400, thereby fixing the bottom shell 400 to the end cover 130.

[0058] Figure 7 and Figure 8 A schematic diagram and an exploded diagram of a linear ultrasonic motor frame module of an embodiment of the utility model are respectively shown; in order to avoid repeated description, the structural features of some components in the linear ultrasonic motor frame module that have been described before are not repeated. Figure 8In the exploded view, the clamping unit 140 on the inner side of the right side plate 120 in the linear ultrasonic motor frame module is exploded and disassembled to more clearly show the structure of the clamping unit 140. The middle of the bottom frame 110 has an opening 113 for the flexible connecting line 420 to pass through. Specifically, the clamping unit 140 includes a support frame 141 and a contact shaft 142, wherein the support frame 141 is, for example, in the shape of an elongated strip, and the surface of the support frame 141 facing the side plate 120 is a support surface 1411. Furthermore, a plurality of windows are provided on the support surface 1411 to reduce the weight of the support frame 141, and the support frame 141 is provided with two limiting rings 1412 perpendicular to the support surface 1411 at both ends of the side away from the support surface 1411, and the middle hole of the limiting ring 1412 is, for example, a circular hole, and the contact shaft 142 is, for example, fixed by passing through the limiting ring 1412, and the contact shaft 142 is, for example, a column with an arched cross-section, and the diameter of the contact shaft 142 is, for example, matched with the inner diameter of the limiting ring 1412, and the axis of the contact shaft 142 is parallel to the inner diameter of the limiting ring 1412. On the support surface 1411, the contact shaft 142 can rotate in the limiting ring 1412. The contact surface 1421 of the contact shaft 142 is, for example, a plane. The contact surface 1421 is, for example, parallel to the axis of the contact shaft 142. The cross-sectional shape of the contact shaft 142 along the surface parallel to the end cover 130 is an arch (major arc arch, semicircular arc arch or inferior arc arch). By adopting a planar contact surface 1421, it can better contact with the driving foot of the linear ultrasonic motor vibrator module 200. Furthermore, through the design of the contact shaft 142 and the limiting ring 1412, the contact shaft 142 can be relatively rotated relative to the support frame 141, so that the contact surface 1421 can be adjusted to achieve adaptive matching with the linear ultrasonic motor vibrator module 200. Furthermore, in order to provide pressure to the linear ultrasonic motor vibrator module 200 to ensure close contact between its driving foot and the contact surface 1421, a plurality of elastic members 170 are also arranged between the support surface 1411 and the side plate 120. The elastic force of the elastic member 170 is adjustable. The elastic member 170 is, for example, a coil spring or a leaf spring. The coil spring can adjust its elastic force by changing its wire diameter and length, thereby adjusting its pressure. The plurality of elastic members 170 are, for example, arranged in a linear array and are arranged near the upper side of the support surface 1411.

[0059] The bottom frame 110 is connected to the support surface 1411 of the support frame 141 through the connecting piece 160 to limit the freedom of the clamping unit (support frame 141). Specifically, the bottom frame 110 is provided with a first boss 112 on the side opposite to the side plate 120, and a second boss 1413 corresponding to the first boss 112 is provided in the lower side area of ​​the support surface 1411 of the support frame 141. A first connecting hole 161 corresponding to the first boss 112 is provided near the lower side of the connecting piece 160, and a second connecting hole 162 corresponding to the second boss 1413 is provided near the upper side of the connecting piece 160. The first boss 112 and the second boss 1413 are respectively inserted into the first connecting hole 161 and the second connecting hole 162 to realize the connection between the bottom frame 110 and the support surface 1411 of the clamping unit. The connecting piece 160 has low rigidity in a direction perpendicular to the supporting surface 1411 and is prone to elastic deformation. By cooperating with the elastic member 170, the clamping units 140 on both sides can be deformed inward, clamping the linear ultrasonic motor vibrator module 200 and applying pressure to the linear ultrasonic motor vibrator module 200.

[0060] Furthermore, the end cap 130 and the bottom shell 400 in this embodiment can be, for example, an integrated structure or a split structure, and the bottom frame 110 as a support structure can also be designed as two support blocks, the two support blocks are parallel to each other, each side plate 120 is located above a support block, the two side plates 120 are arranged opposite to each other, and the two end caps 130 are respectively connected to the two ends of the side plates 120, and the support blocks and the side plates 120 are fixed. Further, the support block can also be designed as an integrated structure with the connecting piece 160 and the support frame 141 on the same side. Through the above changes, the number of parts of the linear ultrasonic motor frame structure of this embodiment can be significantly reduced, the assembly difficulty can be reduced, and the production efficiency can be improved.

[0061] Fig. 9 and Fig.10 The top view and the corresponding cross-sectional view of the linear ultrasonic motor frame module of the utility model embodiment are respectively shown; in the figure, for example, the end cover and the guide rod part are omitted to make the structure of the clamping unit clearer. Specifically, as shown in FIG. Fig.10As shown, the side plate 120 and the clamping unit 140 are both located above the bottom frame 110, the support frame 141 is connected to the side of the bottom frame 110 through the connecting piece 160, the support surface 1411 of the support frame 141 is, for example, flush with the side of the bottom frame 110, the side plate 120 is, for example, located on the outside of the support frame 141, and there is, for example, a certain gap between the support surface 1411 of the support frame 141 and the side plate 120, the lower area of ​​the support surface 1411 of the support frame 141 is connected to the bottom frame 110 through the connecting piece 160, and the upper side area of ​​the support surface 1411 of the support frame 141 is provided with a receiving groove 1414, part of the elastic member 170 is located in the receiving groove 1414 and one end thereof is connected to the support frame 141, and the other end of the elastic member 170 is in contact with the inner surface of the side plate 120, and the elastic member 170 provides elastic force so that the clamping unit 140 provides pressure to the linear ultrasonic motor vibrator module 200. The contact surface 1421 of the contact shaft 142 is a plane, and the contact shaft 142 can rotate in the limiting ring 1412, thereby changing the direction of the contact surface 1421 and achieving self-adaptation between the contact surface 1421 and the driving foot.

[0062] The linear ultrasonic motor frame module and linear ultrasonic motor provided by the utility model integrate the scattered and complex linear ultrasonic motor frame, which not only simplifies the structure of the linear ultrasonic motor frame module and reduces the number of parts, but also makes the linear ultrasonic motor easier to use. The contact surface of the linear ultrasonic motor frame module has an adaptive function within a certain range, and does not require manual intervention and adjustment, and can also ensure sufficient contact and pressure between the contact surface and the driving foot. 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 field of camera application.

[0063] 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.

[0064] 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: Support structure; a first fixed structure and a second fixed structure; A bottom shell, located below the supporting structure, the first fixing structure and the second fixing structure, wherein the first fixing structure, the second fixing structure, the supporting structure and the bottom shell are relatively fixed; One or two clamping units, wherein the clamping unit is located inside the first fixing structure, one side of the clamping unit is in contact with the driving foot of the linear ultrasonic motor vibrator module, and the other side of the clamping unit has a supporting surface opposite to the first fixing structure; The support surface is connected to the support structure at a side area corresponding to the support structure, and an elastic member is provided between the support surface and the first fixing structure, through which the clamping unit applies pressure to the linear ultrasonic motor vibrator module.

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

3. The linear ultrasonic motor frame module according to claim 1, characterized in that: The first fixing structure includes two side panels, the second fixing structure includes two end covers, and the supporting structure includes two supporting blocks; each side panel is located above a supporting block, and the two side panels are arranged opposite to each other; the two end covers are respectively connected to the two ends of the side panels and fix the supporting blocks and the side panels.

4. 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.

5. The linear ultrasonic motor frame module according to claim 1, characterized in that: The clamping unit comprises: A support frame, wherein a side of the support frame facing the first fixing structure is the support surface, and limit rings are provided at both ends of a side of the support frame away from the support surface; A contact shaft, both ends of which penetrate into the limiting ring, the contact shaft can rotate in the limiting ring, the axis of the contact shaft is parallel to the supporting surface, and the side of the contact shaft facing the driving foot of the linear ultrasonic motor vibrator module has a contact surface connected to the driving foot of the linear ultrasonic motor vibrator module.

6. The linear ultrasonic motor frame module according to claim 5, characterized in that: The contact surface of the contact shaft 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.

7. The linear ultrasonic motor frame module according to any one of claims 1 to 3, characterized in that: The supporting structure is connected to the supporting surface of the clamping unit via a connecting piece to limit the degree of freedom of the clamping unit.

8. The linear ultrasonic motor frame module according to claim 7, characterized in that: A first boss is provided on the side of the supporting structure corresponding to the first fixing structure, and a second boss is provided on the side area of ​​the supporting surface corresponding to the supporting structure. The connecting piece is provided with a first connecting hole and a second connecting hole corresponding to the first boss and the second boss, respectively. The first boss and the second boss are respectively inserted into the first connecting hole and the second connecting hole to realize the connection between the supporting surface and the supporting structure.

9. The linear ultrasonic motor frame module according to claim 1, characterized in that: The supporting surface 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.

10. The linear ultrasonic motor frame module according to claim 9, characterized in that: The receiving groove is located in a side area of ​​the supporting surface away from the supporting structure.

11. 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 supporting surface. Both ends of the guide rod are respectively connected to the second fixing structure.

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

13. The linear ultrasonic motor frame module according to claim 1, characterized in that: The elastic force of the elastic member is adjustable.

14. A linear ultrasonic motor, characterized in that: include: A linear ultrasonic motor frame module, the linear ultrasonic motor frame module comprising a support structure; a first fixing structure and a second fixing structure; A bottom shell, located below the support structure, the first fixed structure and the second fixed structure, wherein the first fixed structure, the second fixed structure, the support structure and the bottom shell are relatively fixed; one or two clamping units, wherein the clamping unit is located inside the first fixed structure, one side of the clamping unit is in contact with the driving foot of the linear ultrasonic motor vibrator module, and the other side of the clamping unit has a support surface opposite to the first fixed structure; the support surface is connected to the support structure at a side area corresponding to the support structure, and an elastic member is further provided between the support surface and the first fixed structure, and the clamping unit applies pressure to the linear ultrasonic motor vibrator module through the elastic member; 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.

15. The linear ultrasonic motor according to claim 14, characterized in that: The first fixing structure includes two side panels, the second fixing structure includes two end covers, and the supporting structure includes a bottom frame; the two side panels are both located above the bottom frame, and the two side panels are arranged opposite to each other; the two end covers are respectively connected to the two ends of the side panels and fix the bottom frame and the side panels.

16. The linear ultrasonic motor according to claim 14, characterized in that: The first fixing structure includes two side panels, the second fixing structure includes two end covers, and the supporting structure includes two supporting blocks; each side panel is located above a supporting block, and the two side panels are arranged opposite to each other; the two end covers are respectively connected to the two ends of the side panels and fix the supporting blocks and the side panels.

17. The linear ultrasonic motor according to claim 14, 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 14, characterized in that: The clamping unit comprises: A support frame, wherein a side of the support frame facing the first fixing structure is the support surface, and limit rings are provided at both ends of a side of the support frame away from the support surface; A contact shaft, both ends of which penetrate into the limiting ring, the contact shaft can rotate in the limiting ring, the axis of the contact shaft is parallel to the supporting surface, and the side of the contact shaft facing the driving foot of the linear ultrasonic motor vibrator module has a contact surface connected to the driving foot of the linear ultrasonic motor vibrator module.

19. The linear ultrasonic motor according to claim 14, 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.

20. The linear ultrasonic motor according to claim 18, characterized in that: The contact surface of the contact shaft 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.

21. The linear ultrasonic motor according to any one of claims 14 to 16, characterized in that: The supporting structure is connected to the supporting surface of the clamping unit via a connecting piece to limit the degree of freedom of the clamping unit.

22. The linear ultrasonic motor according to claim 21, characterized in that: A first boss is provided on the side of the supporting structure corresponding to the first fixing structure, and a second boss is provided on the side area of ​​the supporting surface corresponding to the supporting structure. The connecting piece is provided with a first connecting hole and a second connecting hole corresponding to the first boss and the second boss, respectively. The first boss and the second boss are respectively inserted into the first connecting hole and the second connecting hole to realize the connection between the supporting surface and the supporting structure.

23. The linear ultrasonic motor according to claim 14, characterized in that: The supporting surface 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.

24. The linear ultrasonic motor according to claim 23, characterized in that: The receiving groove is located in a side area of ​​the supporting surface away from the supporting structure.

25. The linear ultrasonic motor according to claim 14, characterized in that: The guide rod is located above the bottom shell and the axis of the guide rod is parallel to the supporting surface. Both ends of the guide rod are respectively connected to the second fixing structure.

26. The linear ultrasonic motor according to claim 14, characterized in that: The second fixing structure and the bottom shell are an integral structure or a separate structure.

27. The linear ultrasonic motor according to claim 14, characterized in that: The fixing module includes a vibrator module upper cover and a vibrator module base, and the vibrator module upper cover and the vibrator module base respectively fix the linear ultrasonic motor vibrator module from the upper and lower sides of the linear ultrasonic motor vibrator module, and the vibrator module 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.

28. The linear ultrasonic motor according to claim 27, characterized in that: The vibrator module upper cover is also provided with a bayonet, and the bayonet is connected to the lens of the camera.

29. The linear ultrasonic motor according to claim 14, characterized in that: The elastic force of the elastic member is adjustable.

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