CN210780487U

CN210780487U - Sound wave motor

Info

Publication number: CN210780487U
Application number: CN201921508420.5U
Authority: CN
Inventors: 吴华桃
Original assignee: Dongguan Xufengxiang Micromotor Co ltd
Current assignee: Dongguan Xufengxiang Micromotor Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-06-16
Anticipated expiration: 2029-09-10

Abstract

The utility model discloses a sound wave motor, which comprises a shell, a rear cover, a bearing, an output shaft, a first magnet, a second magnet and a rotor, wherein the rotor is arranged in the shell and is fixedly connected with the output shaft; one end of the first coil is communicated with one end of the second coil, the other end of the first coil and the other end of the second coil are both wiring ends, the wiring ends of the first coil and the second coil are positioned on the same side of the reversing frame and close to the center of the rotor, and the wiring ends of the first coil and the second coil penetrate out of the rear cover and are used for being connected with a power supply; the rotor also comprises a spring leaf arranged on the reversing frame; the upper end of the spring piece is fixedly connected with the reversing frame, and the lower end of the spring piece is fixedly connected with the rear cover. The utility model discloses simplify the structure of motor, convenient production has practiced thrift manufacturing cost.

Description

Sound wave motor

Technical Field

The utility model relates to the technical field of motors, specifically relate to a sound wave motor.

Background

Oral care is increasingly faithful to people, and nursing products of the oral care are endlessly varied, so that the oral care still cannot meet the requirements of people on high-quality life from traditional toothbrushes to electric toothbrushes. Therefore, the sound wave toothbrush is produced by the operation, the core part of the sound wave toothbrush is the sound wave motor, the existing sound wave motor is divided into a mechanical type and a magnetic suspension type according to a rotor return mode, the magnetic suspension type enables the rotor to keep balance by means of symmetrical attraction of four magnetic poles, and the direction of a rotor magnetic field always returns to a position keeping a certain angle with a driving magnetic field, so that the sound wave toothbrush can respond to the maximum when being driven. The mechanical type is that the magnetic field attraction is overcome by using mechanical power, so that the magnetic field of the rotor is restored to the position which keeps a certain angle with the driving magnetic field, and the driving energy is corresponding. The magnetic suspension type sound wave motor works by utilizing a magnetic field formed by strong magnets, is made of rare earth material praseodymium neodymium, has high cost and serious pollution, and can reduce the use of the structure as much as possible if an alternative scheme is available; however, the existing magnetic suspension sound wave motor cannot be replaced by other motors due to the characteristics of high frequency, large torsion, stable structure and the like, the mechanical sound wave motor reduces the using amount of the sub-strong magnets, but the rotor recovery mode is realized by the metal elastic sheet, and the problem of the existing technology is that the metal elastic sheet is easy to strain, so that the service life of the motor is greatly influenced.

Publication number CN208739001U discloses a sound wave motor, which is characterized by comprising: the iron core, the coil, the reversing frame, the reversing sheet, the shaft and the directional spring; after the iron core is automatically coiled into a disc, an insulating layer is covered on the iron core through electrophoresis, the shaft and the iron core are riveted and pressed into a whole, the coil is wound on the iron core, the reversing frame is fixed on the outer side of the coil and connected with the reversing sheet to form a rotor, the rotor is fixed in the vertical direction of a driving magnetic field through a directional spring, so that the rotor can output power in the fixed direction according to the change of the polarity of a power supply, and meanwhile, the directional spring can conduct current to the coil through the reversing sheet. Although the sound wave motor has certain advantages, certain problems exist, such as more parts due to complicated structure, and thus the production cost is increased.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists above, the utility model aims at providing a sound wave motor, its simple structure is reasonable, and spare part is few, the convenient production preparation to reduction in production cost widely can.

In order to realize the purpose, the technical scheme of the utility model is that:

a sound wave motor comprises a shell, a rear cover connected with the shell, a bearing fixed in the top of the shell, an output shaft of which the lower end is fixed in the bearing, a first magnet and a second magnet which are fixed in the shell in a bilateral symmetry manner, and a rotor arranged in the shell and fixedly connected with the output shaft, wherein the rotor comprises an iron core, a central shaft which is riveted and pressed with the iron core into a whole and of which the upper end is fixedly connected with the lower end of the output shaft, a first coil and a second coil which are respectively wound on two sides of the iron core, and a reversing frame clamped on the iron core; one end of the first coil is communicated with one end of the second coil, the other end of the first coil and the other end of the second coil are both wiring ends, the wiring ends of the first coil and the second coil are positioned on the same side of the reversing frame and close to the center of the rotor, and the wiring ends of the first coil and the second coil penetrate out of the rear cover and are used for being connected with a power supply; the rotor also comprises a spring leaf arranged on the reversing frame; the upper end of the spring piece is fixedly connected with the reversing frame, and the lower end of the spring piece is fixedly connected with the rear cover; the rotor is fixed in the vertical direction of the driving magnetic field through the spring piece, so that the rotor can output power in a fixed direction according to the change of the polarity of the power supply.

As a specific example, a wiring hole for passing out a terminal of the first coil and a terminal of the second coil is provided in the rear cover.

In a specific embodiment, the spring plate is integrally formed with the reversing frame.

As a specific embodiment, a protrusion is protruded downward at the bottom of the rear cover; a strip-shaped hole penetrating through the rear cover and the bulge is formed in the rear cover; the end of the spring piece, which is far away from the reversing frame, is fixedly arranged in the strip-shaped hole.

Furthermore, a jack communicated with the strip-shaped hole is arranged in the bulge; the spring piece is provided with a connecting hole corresponding to the jack; and a fixing rod for fixing the spring piece is connected between the jack and the connecting hole.

Further, the fixing rod is a pin or a screw.

In a specific embodiment, the width of the end of the spring plate connected with the reversing frame is smaller than that of the other end.

The utility model has the advantages that:

the utility model discloses a directly wear out the wiring end of first coil and the wiring end of second coil back lid be used for with power lug connection to and set up the spring leaf on the frame of switching-over, simplified the structure of motor widely, reduced the use of spare part, the preparation of convenient production, thereby practiced thrift manufacturing cost.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the present invention with the casing and the rear cover removed;

FIG. 3 is a right side view of FIG. 2;

fig. 4 is a bottom view of fig. 2.

Reference numerals:

1. a housing; 2. a rear cover; 21. a wiring hole; 22. a projection; 23. a strip-shaped hole; 24. a jack; 3. a bearing; 4. an output shaft; 5. a first magnet; 6. a second magnet; 7. an iron core; 8. a central shaft; 9. a first coil; 91. a terminal of the first coil; 10. a second coil; 101. a terminal of the second coil; 11. a reversing frame; 12. a spring plate; 121. connecting holes; 13. and (5) fixing the rod.

Detailed Description

The invention will be further elucidated with reference to the drawings and the embodiments, which are exemplary only and do not limit the scope of the invention.

As shown in fig. 1-4, an acoustic wave motor includes a housing 1, a rear cover 2 connected to the housing 1, a bearing 3 fixed in the top of the housing 1, an output shaft 4 having a lower end fixed in the bearing 3, a first magnet 5 and a second magnet 6 fixed in the housing 1 in a bilateral symmetry manner, and a rotor disposed in the housing 1 and fixedly connected to the output shaft 4, wherein the rotor includes an iron core 7, a central shaft 8 riveted to the iron core 7 into a whole and having an upper end fixedly connected to the lower end of the output shaft 4, a first coil 9 and a second coil 10 respectively wound on two sides of the iron core 7, and a commutator 11 clamped to the iron core 7; one end of the first coil 9 is communicated with one end of the second coil 10, the other end of the first coil 9 and the other end of the second coil 10 are both terminals, the terminal 91 of the first coil and the terminal 101 of the second coil are positioned on the same side of the reversing frame 11 and close to the center of the rotor, and the terminal 91 of the first coil and the terminal 101 of the second coil penetrate out of the rear cover 2 to be used for being connected with a power supply; the rotor also comprises a spring leaf 12 arranged on the reversing frame 11; the upper end of the spring leaf 12 is fixedly connected with the reversing frame 11, and the lower end is fixedly connected with the rear cover 2; the rotor is fixed in the vertical direction of the driving magnetic field through the spring pieces 12, so that the rotor can output power in a fixed direction according to the change of the polarity of the power supply. Preferably, the spring plate 12 is integrally formed with the yoke 11, thereby facilitating the production. The iron core 7 is formed by stamping the lamination sheets together, the iron core 7 is coated with an insulating layer, then the central shaft 8 and the iron core 7 are riveted into a whole, and then the first coil 9 and the second coil 10 are coiled at the two sides of the iron core 7; the terminal 91 of the first coil and the terminal 101 of the second coil are positioned on the same side of the reversing frame 11 and close to the center of the rotor, namely, the terminal 91 of the first coil and the terminal 101 of the second coil are both positioned on the same side of the reversing frame 11 and close to the center of the rotor, the arrangement mode enables the terminal 91 of the first coil and the terminal 101 of the second coil to be more stable, and meanwhile, the terminal 91 of the first coil and the terminal 101 of the second coil penetrate through the rear cover 2 to be connected with a power supply; the reversing frame 11 is pressed in from the rear end of the central shaft 8, so that the reversing frame 11 is clamped on the iron core 7, and the upper end of the central shaft 8 is fixedly connected with the lower end of the output shaft 4, so that the rotor is fixed in the machine shell 1; one end of the spring leaf 12 is fixed on the back cover 2, the rotor is fixed in the vertical direction of the driving magnetic field through the spring leaf 12, so that the rotor can fix the output power according to the change of the power polarity and output the kinetic energy to the outside through the output shaft 4; the rear cover 2 is buckled on the machine shell 1. The utility model discloses a cover 2 after directly wearing out the wiring end 91 of first coil and the wiring end 101 of second coil and be used for forming closed circular telegram with power lug connection and make the power in proper order through first coil 9 and second coil 10 to and set up spring leaf 12 on reversing frame 11, simplified the structure of motor widely, reduced the use of spare part, convenient production preparation, thereby practiced thrift manufacturing cost.

Wherein, a wiring hole 21 for passing through the terminal 91 of the first coil and the terminal 101 of the second coil is provided in the rear cover 2.

A protrusion 22 is protruded downwardly at the bottom of the rear cover 2; a strip-shaped hole 23 penetrating through the rear cover 2 and the bulge 22 is formed in the rear cover 2; the end of the spring plate 12 remote from the reversing frame 11 is fixedly arranged in the strip-shaped hole 23. Specifically, an insertion hole 24 communicating with the strip-shaped hole 23 is provided in the projection 22; a connecting hole 121 corresponding to the insertion hole 24 is arranged on the spring piece 12; a fixing rod 13 for fixing the spring piece 121 is connected to the insertion hole 24 and the connection hole 121; preferably, the fixing rod 13 is a pin or a screw.

The width of the end of the spring plate 12 connected to the reversing frame 11 is smaller than that of the other end, so that the connection of the spring plate 12 to the rear cover 2 is more stable.

The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.

Claims

1. The utility model provides a sound wave motor, including the casing, with back lid, the fixing that the casing is connected bearing, lower extreme in the casing top are fixed output shaft, bilateral symmetry in the bearing fix first magnet and second magnet, setting in the casing are in the casing and with output shaft fixed connection's rotor, the rotor include the iron core, with the iron core is riveted and is pressed as an organic whole and the upper end with output shaft lower extreme fixed connection's center pin, roll up respectively first coil and the second coil, the joint of iron core both sides are in reversing frame on the iron core, its characterized in that:

one end of the first coil is communicated with one end of the second coil, the other end of the first coil and the other end of the second coil are both wiring ends, the wiring ends of the first coil and the second coil are positioned on the same side of the reversing frame and close to the center of the rotor, and the wiring ends of the first coil and the second coil penetrate out of the rear cover and are used for being connected with a power supply; the rotor also comprises a spring leaf arranged on the reversing frame; the upper end of the spring piece is fixedly connected with the reversing frame, and the lower end of the spring piece is fixedly connected with the rear cover; the rotor is fixed in the vertical direction of the driving magnetic field through the spring piece, so that the rotor can output power in a fixed direction according to the change of the polarity of the power supply.

2. The acoustic wave motor of claim 1, wherein:

and a wiring hole for penetrating out the wiring end of the first coil and the wiring end of the second coil is formed in the rear cover.

3. The acoustic wave motor of claim 1, wherein:

the spring piece and the reversing frame are integrally formed.

4. The acoustic wave motor of claim 1, wherein:

a convex part is protruded downwards at the bottom of the rear cover; a strip-shaped hole penetrating through the rear cover and the bulge is formed in the rear cover; the end of the spring piece, which is far away from the reversing frame, is fixedly arranged in the strip-shaped hole.

5. The acoustic wave motor of claim 4, wherein:

a jack communicated with the strip-shaped hole is arranged in the bulge; the spring piece is provided with a connecting hole corresponding to the jack; and a fixing rod for fixing the spring piece is connected between the jack and the connecting hole.

6. The acoustic wave motor of claim 5, wherein:

the fixing rod is a pin or a screw.

7. The acoustic wave motor of claim 1, wherein:

the width of the end, connected with the reversing frame, of the spring piece is smaller than that of the other end of the spring piece.