Ultrasonic vibration motor

Abstract

The present invention discloses an ultrasonic vibration motor, which includes a housing, an ultrasonic transducer, an electric motor and an horn, wherein the housing, the ultrasonic transducer, the electric motor and the horn form an integrated structure, the housing is provided with a cavity and a back cover, the electric motor is provided with a connecting flange, the horn is connected to the connecting flange, an anti-loosening structure is provided between the horn and the connecting flange, and the ultrasonic transducer is arranged between the horn and the connecting flange. The present invention realizes that the housing, the ultrasonic transducer, the electric motor and the horn form an integrated structure, which greatly reduces the volume of the ultrasonic vibration motor, so that the ultrasonic vibration motor can be used in the assembly or development of miniaturized ultrasonic products, so that the use scope of the ultrasonic vibration motor is expanded, the applicability of the ultrasonic vibration motor is improved, and the production requirements of existing miniaturized ultrasonic products are met.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic motors, and in particular to an ultrasonic vibration motor. Background Art

[0002] At present, ultrasonic devices can greatly improve the removal of stubborn substances due to their high cleaning effect, and have been widely used in many fields such as industry, medical treatment, and beauty. The working core of the ultrasonic device lies in the ultrasonic generator component inside it. The ultrasonic generator component can achieve high-speed vibration of the piezoelectric ceramic sheet by applying a current of a certain frequency, generate ultrasonic waves, and drive the operation of the ultrasonic equipment, thereby achieving the effect of ultrasonic cleaning. However, with the development of science and technology, the existing ultrasonic devices have problems such as poor cleaning effect or limited vibration direction, which makes the ultrasonic device have certain limitations. In order to improve the cleaning effect and scope of use, people have invented ultrasonic motors, but the structure of the existing ultrasonic motor is usually to directly connect the ultrasonic generator to the rotating shaft of the electric motor. It has the problem of large volume and cannot be miniaturized, so that the volume of the product that needs to use the ultrasonic motor is large, which makes the scope of use of the ultrasonic motor have certain limitations and cannot meet the production needs of existing miniaturized ultrasonic products. In addition, it is connected and fixed by welding or screw locking. When the welding method needs to be maintained and disassembled, it needs to be replaced as a whole, and the maintenance and replacement cost is high. The connection by screw locking has the problem of loose connection after long-term use, which leads to the use efficiency and effect of the ultrasonic motor. Summary of the invention

[0003] This invention aims to solve the current technical deficiencies and provides an ultrasonic vibration motor.

[0004] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0005] An ultrasonic vibration motor comprises a shell, an ultrasonic transducer, an electric motor and a horn, wherein the shell, the ultrasonic transducer, the electric motor and the horn form an integrated structure, the shell is provided with a cavity, the ultrasonic transducer and the electric motor are arranged in the cavity, the shell is provided with a back cover, the electric motor is provided with a connecting flange, the horn is connected to the connecting flange, an anti-loosening structure is provided between the horn and the connecting flange, and the ultrasonic transducer is arranged between the horn and the connecting flange.

[0006] As a further improvement, the cavity includes an electric motor mounting portion and a connecting portion, the electric motor is arranged in the electric motor mounting portion, the electric motor includes a plurality of fixed magnet sheets, two copper rings and a rotor, the rotor includes a silicon steel sheet assembly, a rotating shaft and a solder sheet, the back cover is provided with a rolling bearing, and the housing is provided with a rolling bearing 1.

[0007] As a further improvement, the plurality of fixed magnet sheets are respectively arranged on the four inner side surfaces of the electric motor mounting portion, the rotating shaft is connected to the silicon steel sheet assembly, the two copper rings are respectively arranged on the two end surfaces of the silicon steel sheet assembly, a fixing screw is provided at one end of the rotating shaft, and the solder sheet is arranged on the other end of the rotating shaft.

[0008] As a further improvement, the head end of the rotating shaft is inserted into the rolling bearing of the rear cover, and the connecting flange includes a connecting part and a connecting threaded part. The connecting part is provided with a threaded hole, and the threaded hole is connected to the fixing screw. An anti-loosening structure is provided between the connecting part and the fixing screw.

[0009] As a further improvement, the anti-loosening structure includes two threaded holes, two hidden screws and two grooves. The two screw holes are arranged on the side of the connecting part in a mirror-image manner, and the two grooves are arranged on the side of the fixing screw in a mirror-image manner. The two hidden screws are respectively arranged in the threaded hole, and the tail ends of the hidden screws are inserted into the grooves.

[0010] As a further improvement, the amplitude transformer includes a mounting connection part and a connecting rod part, the mounting connection part is provided with a connecting screw hole, the connecting threaded part is connected to the connecting screw hole, the anti-loosening structure one includes two threaded holes two, two hidden screws two and two grooves two, the two screw holes two are arranged on the side of the mounting connection part in a mirror-image manner, the two grooves two are arranged on the side of the connecting threaded part in a mirror-image manner, the two hidden screws two are respectively arranged in the threaded holes two, and the tail ends of the hidden screws two are inserted in the grooves two.

[0011] As a further improvement, the amplitude changing rod is provided with a limiting ring block, and the length of the amplitude changing rod is 20-70 mm.

[0012] As a further improvement, the ultrasonic transducer includes two piezoelectric ceramic sheets, the two piezoelectric ceramic sheets form a double-layer piezoelectric ceramic sheet structure, and the ultrasonic transducer is provided with an electrode sheet.

[0013] As a further improvement, the center of the rolling bearing, the center of the rotating shaft, the center of the connecting flange, the center of the rolling bearing and the center of the amplitude rod are on the same axis.

[0014] Beneficial effects of the present invention: The present invention realizes an integrated structure of a shell, an ultrasonic transducer, an electric motor and an amplitude transformer, which greatly reduces the volume of the ultrasonic vibration motor, so that the ultrasonic vibration motor can be used in the assembly or development of miniaturized ultrasonic products, so that the use scope of the ultrasonic vibration motor is expanded, the applicability of the ultrasonic vibration motor is improved, and the production requirements of existing miniaturized ultrasonic products are met; an anti-loosening structure is provided to ensure a stable connection between the electric motor and the connecting flange, prevent the transmission from being weakened due to looseness, and ensure the transmission efficiency and use efficiency of the ultrasonic vibration motor; an anti-loosening structure is provided to ensure a stable connection between the amplitude transformer and the connecting flange, prevent the energy of the ultrasonic generator or the electric motor from being weakened due to looseness, and ensure the transmission efficiency of the driving energy, thereby ensuring the use efficiency and use effect of the ultrasonic vibration motor. The anti-loosening structure and the anti-loosening structure make the ultrasonic generator, the electric motor and the amplitude transformer form a detachable connection, which ensures the use efficiency and use effect of the ultrasonic vibration motor, and facilitates the replacement of subsequent components when failure occurs, thereby reducing the subsequent maintenance cost.

[0015] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the ultrasonic vibration motor of this embodiment;

[0017] Figure 2 This is a schematic diagram of an exploded view of the ultrasonic vibration motor of this embodiment;

[0018] Figure 3 Schematic cross-sectional view of the ultrasonic vibration motor of this embodiment.

[0019] In the figure: 1. ultrasonic vibration motor, 2. shell, 3. ultrasonic transducer, 4. electric motor, 5. amplitude transformer, 20. cavity, 6. back cover, 40. connecting flange, 7. relaxation structure one, 200. electric motor mounting part, 201. connecting part, 41. fixed magnet sheet, 42. copper ring, 43. rotor, 430. silicon steel sheet assembly, 431. rotating shaft, 432. solder sheet, 60. rolling bearing, 21. rolling bearing one, 400. connecting part one, 401. connecting threaded part, 4000. threaded hole, 8. relaxation structure, 80. threaded hole one, 81. hidden screw, 82. groove, 50. mounting connection part, 51. connecting rod part, 500. connecting screw hole, 70. threaded hole two, 71. hidden screw two, 72. groove two, 52. limiting ring block, 30. piezoelectric ceramic sheet, 31. electrode sheet. DETAILED DESCRIPTION

[0020] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

[0021] For example, see the attached Figure 1 to Figure 3 An ultrasonic vibration motor 1 includes a shell 2, an ultrasonic transducer 3, an electric motor 4 and a horn 5. The shell 2, the ultrasonic transducer 3, the electric motor 4 and the horn 5 form an integrated structure, which greatly reduces the volume of the ultrasonic vibration motor 1. The shell 2 is provided with a cavity 20, and the ultrasonic transducer 3 and the electric motor 4 are arranged in the cavity 20. The shell 2 is provided with a back cover 6, and the electric motor 4 is provided with a connecting flange 40. The horn 5 is connected to the connecting flange 40, and an anti-loosening structure 7 is provided between the horn 5 and the connecting flange 40. The ultrasonic transducer 3 is arranged between the horn 5 and the connecting flange 40.

[0022] The cavity 20 includes an electric motor mounting portion 200 and a connecting portion 201. The electric motor 4 is arranged in the electric motor mounting portion 200. The electric motor 4 includes a plurality of fixed magnet sheets 41, two copper rings 42 and a rotor 43. The rotor 43 includes a silicon steel sheet assembly 430, a rotating shaft 431 and a solder sheet 432. The rear cover 6 is provided with a rolling bearing 60. The housing 2 is provided with a rolling bearing 21. The rolling bearing 60 and the rolling bearing 21 are used to ensure the stable connection between the amplitude transformer 5 and the rotating shaft 431.

[0023] The plurality of fixed magnet sheets 41 are respectively arranged on the four inner side surfaces of the electric motor mounting portion 200, the rotating shaft 431 is connected to the silicon steel sheet assembly 430, the two copper rings 42 are respectively arranged on the two end surfaces of the silicon steel sheet assembly 430, a fixing screw 433 is provided at one end of the rotating shaft 431, the solder sheet 432 is arranged on the other end of the rotating shaft 430, and the solder sheet 432 is used to connect to the external power supply.

[0024] The head end of the rotating shaft 430 is inserted into the rolling bearing 60 of the rear cover 6, and the connecting flange 40 includes a connecting part 400 and a connecting threaded part 401. The connecting part 400 is provided with a threaded hole 4000, and the threaded hole 4000 is connected to the fixing screw 433. An anti-loosening structure 8 is provided between the connecting part 400 and the fixing screw 433.

[0025] The anti-loosening structure 8 includes two threaded holes 80, two hidden screws 81 and two grooves 82. The two screw holes 80 are arranged on the side of the connecting part 400 in a mirror-image manner, and the two grooves 82 are arranged on the side of the fixing screw 433 in a mirror-image manner. The two hidden screws 81 are respectively arranged in the threaded holes 80, and the tail ends of the hidden screws 81 are inserted into the grooves 80. The anti-loosening structure 8 is used to ensure the stable connection between the electric motor 4 and the connecting flange 40, prevent the transmission weakening due to loosening, and ensure the transmission efficiency and use efficiency of the ultrasonic vibration motor 1.

[0026] The amplitude transformer 5 includes an installation connection portion 50 and a connecting rod portion 51. The installation connection portion 50 is provided with a connecting screw hole 500. The connecting threaded portion 401 is connected to the connecting screw hole 500. The anti-loosening structure 1 7 includes two threaded holes 2 70, two hidden screws 2 71 and two grooves 2 72. The two screw holes 2 70 are arranged on the side of the installation connection portion 50 in a mirror-image manner. The two grooves 2 72 are arranged on the side of the connecting threaded portion 401 in a mirror-image manner. The two hidden screws 2 71 are respectively arranged in the threaded holes 2 70, and the tail ends of the hidden screws 2 71 are inserted into the grooves 2 72. The anti-loosening structure 1 7 is used to ensure the stable connection between the amplitude transformer 5 and the connecting flange 40, prevent the energy of the ultrasonic generator 3 or the electric motor 4 from weakening due to loosening, ensure the transmission efficiency of the driving energy, and thus ensure the use efficiency and effect of the ultrasonic vibration motor 1.

[0027] The amplitude transformer 5 is provided with a limiting ring block 52, and the length of the amplitude transformer 5 is 20-70 mm.

[0028] The ultrasonic transducer 3 includes two piezoelectric ceramic sheets 30, and the two piezoelectric ceramic sheets 30 form a double-layer piezoelectric ceramic sheet structure. The ultrasonic transducer 3 is provided with an electrode sheet 31, and the electrode sheet 31 is used to connect to an external power supply. The ultrasonic transducer 3 and the electric motor 1 respectively use independent power supplies.

[0029] The center of the rolling bearing 60, the center of the rotating shaft 431, the center of the connecting flange 40, the center of the rolling bearing 21 and the center of the horn 5 are on the same axis.

[0030] The working principle of the present invention is as follows: the ultrasonic transducer and the electric motor are connected to different power inputs respectively. The power input of the ultrasonic transducer is connected to the electrode sheet; the power input of the electric motor is connected to the solder sheet. Then, electrical signals of different frequencies are input to the ultrasonic transducer and the electric motor respectively. Under the action of the electrical signal, the ultrasonic transducer generates an ultrasonic signal of the corresponding frequency. The ultrasonic signal propagates forward along the horn and causes the horn to produce a vibration effect. After the electric motor is input with the electrical signal, the silicon steel sheet generates magnetism due to the electromagnetic effect, and rotates under the action of the fixed magnet sheet. The rotation phenomenon of the electric motor is transmitted to the ultrasonic transducer through the fixed screw and drives the rotation of the ultrasonic transducer. When the electric motor rotates to a certain angle, the phase of the input electrical signal changes, and the silicon steel sheet will produce reverse rotation under the magnetic interaction, and drive the rotation of the ultrasonic transducer again. By continuously inputting the electrical signal with phase change to the electric motor, the electric motor and the ultrasonic transducer can be continuously rotated left and right, so as to achieve the output of the vibration effect of "moving forward and backward" while meeting the requirements of omnidirectional working direction of the ultrasonic wave.

[0031] The present invention realizes that the shell, ultrasonic transducer, electric motor and horn are integrated into an integrated structure, which greatly reduces the volume of the ultrasonic vibration motor, so that the ultrasonic vibration motor can be used in the assembly or development of miniaturized ultrasonic products, so that the application scope of the ultrasonic vibration motor is expanded, the applicability of the ultrasonic vibration motor is improved, and the production requirements of existing miniaturized ultrasonic products are met; an anti-loosening structure is provided to ensure the stable connection between the electric motor and the connecting flange, prevent the transmission weakening due to loosening, and ensure the transmission efficiency and use efficiency of the ultrasonic vibration motor; an anti-loosening structure is provided to ensure the stable connection between the horn and the connecting flange, prevent the energy of the ultrasonic generator or the electric motor from weakening due to loosening, ensure the transmission efficiency of the driving energy, and thus ensure the use efficiency and use effect of the ultrasonic vibration motor. The anti-loosening structure and the anti-loosening structure make the ultrasonic generator, the electric motor and the horn form a detachable connection, which ensures the use efficiency and use effect of the ultrasonic vibration motor, and is convenient for subsequent replacement of components when failure occurs, thereby reducing subsequent maintenance costs.

[0032] The present invention is not limited to the above-mentioned embodiments. Other ultrasonic vibration motors obtained by using the same or similar structures or devices as the above-mentioned embodiments of the present invention are within the protection scope of the present invention.

Claims

1. An ultrasonic vibration motor, characterized in that: The ultrasonic vibration motor comprises a shell, an ultrasonic transducer, an electric motor and an amplitude rod, wherein the shell, the ultrasonic transducer, the electric motor and the amplitude rod form an integrated structure, the shell is provided with a cavity, the ultrasonic transducer and the electric motor are arranged in the cavity, the shell is provided with a back cover, the electric motor is provided with a connecting flange, the amplitude rod is connected to the connecting flange, an anti-loosening structure 1 is provided between the amplitude rod and the connecting flange, and the ultrasonic transducer is arranged between the amplitude rod and the connecting flange; The cavity includes an electric motor mounting portion and a connecting portion, the electric motor is arranged in the electric motor mounting portion, the electric motor includes a plurality of fixed magnet sheets, two copper rings and a rotor, the rotor includes a silicon steel sheet assembly, a rotating shaft and a solder sheet, the rear cover is provided with a rolling bearing, and the housing is provided with a rolling bearing 1; The plurality of fixed magnet sheets are respectively arranged on the four inner side surfaces of the electric motor mounting portion, the rotating shaft is connected to the silicon steel sheet assembly, the two copper rings are respectively arranged on the two end surfaces of the silicon steel sheet assembly, a fixing screw is arranged at one end of the rotating shaft, and the solder sheet is arranged on the other end of the rotating shaft; The head end of the rotating shaft is inserted into the rolling bearing of the rear cover, the connecting flange includes a connecting portion 1 and a connecting threaded portion, the connecting portion 1 is provided with a threaded hole, the threaded hole is connected to the fixing screw, and an anti-loosening structure is provided between the connecting portion 1 and the fixing screw; The anti-loosening structure comprises two threaded holes 1, two hidden screws and two grooves, the two threaded holes 1 are arranged on the side of the connecting part 1 in a mirror-image manner, the two grooves are arranged on the side of the fixing screw in a mirror-image manner, the two hidden screws are respectively arranged in the threaded holes 1, and the tail ends of the hidden screws are inserted into the grooves; The amplitude transformer includes a mounting connection portion and a connecting rod portion, the mounting connection portion is provided with a connecting screw hole, the connecting threaded portion is connected to the connecting screw hole, the anti-loosening structure 1 includes two threaded holes 2, two hidden screws 2 and two grooves 2, the two threaded holes 2 are arranged on the side of the mounting connection portion in a mirror-image manner, the two grooves 2 are arranged on the side of the connecting threaded portion in a mirror-image manner, the two hidden screws 2 are respectively arranged in the threaded holes 2, and the tail ends of the hidden screws 2 are inserted into the grooves 2.

2. The ultrasonic vibration motor according to claim 1, characterized in that: The amplitude change rod is provided with a limiting ring block, and the length of the amplitude change rod is 20-70 mm.

3. The ultrasonic vibration motor according to claim 2, characterized in that: The ultrasonic transducer comprises two piezoelectric ceramic sheets, the two piezoelectric ceramic sheets form a double-layer piezoelectric ceramic sheet structure, and the ultrasonic transducer is provided with an electrode sheet.

4. The ultrasonic vibration motor according to claim 3, characterized in that: The center of the rolling bearing, the center of the rotating shaft, the center of the connecting flange, the center of the rolling bearing and the center of the amplitude rod are on the same axis.

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