CN216414151U - Vibration motor - Google Patents
Vibration motor Download PDFInfo
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- CN216414151U CN216414151U CN202122978337.8U CN202122978337U CN216414151U CN 216414151 U CN216414151 U CN 216414151U CN 202122978337 U CN202122978337 U CN 202122978337U CN 216414151 U CN216414151 U CN 216414151U
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- driven shaft
- end disc
- disc
- vibration motor
- vibrator
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Abstract
The utility model provides a vibration motor, which belongs to the technical field of motors and comprises a shell, a driving shaft, a driven shaft, a rebounding device, a first end disc and a second end disc; the driving shaft and the driven shaft are in running fit with the shell; the rebounding device has a first end and a second end; one end of the first end disc is provided with a plurality of magnetic pieces; the second end disc and the first end disc are coaxially arranged, and a cavity is formed between the second end disc and the first end disc; one end of the second end disc close to the first end disc is provided with a plurality of soft magnets which are in one-to-one correspondence with the magnetic pieces, and a separation groove is formed between the adjacent soft magnets; the driven shaft can regularly swing through the matching of the shell, the driving shaft, the driven shaft, the rebounding device, the first end disc and the second end disc, and the driven shaft is in non-rigid connection with the driving shaft, so that effective overload protection can be provided, and the working reliability of the motor is improved; compare in traditional mode that sets up coil winding and realize reciprocating swing, this application can also improve the waterproof performance of motor.
Description
Technical Field
The utility model belongs to the technical field of motors, and particularly relates to a vibration motor.
Background
The electric toothbrush utilizes a high-speed vibrating movement to drive a brush head to rotate or vibrate so as to achieve the tooth cleaning effect. In the electric toothbrush in the prior art, the pendulum bob is driven to rotate by the rotating motor, so that the vibration of the toothbrush is realized, and the effect of cleaning teeth is achieved. However, the vibration generated by the rotation of the pendulum by the rotating motor is irregular, and the tooth cleaning effect is poor.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a vibration motor, and aims to solve the technical problem that the tooth cleaning effect is influenced by irregular vibration of a rotary motor in the prior art.
In order to achieve the purpose, the utility model adopts the technical scheme that:
provided is a vibration motor including:
a housing;
the driving shaft and the driven shaft are in rotating fit with the shell, and one end of the driven shaft is suitable for extending out of the shell;
a resilient device having a first end connected to the driven shaft and a second end connected to the housing;
the magnetic bearing comprises a first end disc, a second end disc and a magnetic bearing, wherein one end of the first end disc is provided with a plurality of magnetic pieces, the magnetic pieces are arranged along the circumferential direction of the first end disc, and the magnetic pieces are distributed in an alternating mode; and
the second end disc is coaxially arranged with the first end disc, and a cavity is formed between the second end disc and the first end disc; one end of the second end disc close to the first end disc is provided with a plurality of soft magnets which are in one-to-one correspondence with the magnetic pieces, and a separation groove is formed between every two adjacent soft magnets;
one end of the first end disc, which is far away from the magnetic part, is connected with the driving shaft, and one end of the second end disc, which is far away from the soft magnet, is connected with the driven shaft; or one end of the first end disc, which is far away from the magnetic part, is connected with the driven shaft, and one end of the second end disc, which is far away from the soft magnet, is connected with the driving shaft;
the driven shaft has a first state suitable for rotating in the forward direction along with the driving shaft and a second state capable of reversely returning under the action of the resilience force of the resilient device.
In one possible implementation manner, the rebounding device comprises a vibrator, an elastic piece and a mounting seat; the mounting seat is provided with a connecting groove, the vibrator is positioned in the connecting groove and has a degree of freedom suitable for swinging back and forth along the connecting groove; one end of the elastic piece is connected with the vibrator, and the other end of the elastic piece is connected with the mounting seat;
the mounting seat is fixed on the shell and is provided with a through hole suitable for the driven shaft to penetrate through; the vibrator is fixed on the driven shaft.
In a possible implementation manner, the elastic piece is a spring piece with a V-shaped structure.
In a possible implementation manner, the number of the elastic pieces is two, and the two elastic pieces are respectively located on two sides of the vibrator; one end of the elastic sheet is abutted to the vibrator.
In a possible implementation manner, the abutting end of the elastic sheet is provided with an arc-shaped contact surface.
In a possible implementation manner, the rebounding device includes an elastic sheet with a vortex-shaped structure, an inner side end of the elastic sheet is connected with the driven shaft, and an outer side end of the elastic sheet is connected with the driving shaft.
In a possible implementation, the rebounding device comprises two elastic strips that are rotationally symmetric about the axis of the driven shaft; the elastic sheet is provided with a first connecting end connected with the driven shaft and a second connecting end connected with the shell.
In a possible implementation manner, an arc-shaped connecting portion is arranged between the first connecting end and the second connecting end, and a concave surface of the arc-shaped connecting portion is suitable for facing the peripheral wall of the driven shaft.
In a possible implementation manner, the resilient device includes an elastic sheet, the elastic sheet is adapted to penetrate through the driven shaft along a radial direction, and two ends of the elastic sheet are respectively connected with the housing.
In a possible implementation manner, two opposite connection surfaces are arranged on the peripheral wall of the driven shaft, the rebounding device comprises an elastic sheet with an arc-shaped structure, two ends of the elastic sheet extend towards the concave surface and form two contact ends, and the two contact ends of the elastic sheet are respectively connected with the corresponding connection surfaces; the convex surface of the elastic sheet is fixedly connected with the shell.
In the embodiment of the application, the first end disc can be fixed on the driving shaft and also can be fixed on the driven shaft, and when the first end disc is fixed on the driving shaft, the second end disc is fixed on the driven shaft; when the first end disc is fixed on the driven shaft, the second end disc is fixed on the driving shaft; the soft magnet on the second end disk is easy to magnetize and demagnetize, and magnetic pole coupling force exists between the first end disk and the second end disk; therefore, the driven shaft can rotate along with the rotation of the driving shaft, and after the driven shaft rotates in the positive direction, the rebounding device can provide rebounding force for the driven shaft, so that the driven shaft is reversely rotated and reset; by repeating the above process, the reciprocating swing of the driven shaft can be realized. The resilience force that resilient means provided has linear relation with the turned angle of driven shaft, and the resilience force that consequently resilient means provided is comparatively stable, can make the regular swing of driven shaft, is convenient for improve clean tooth effect.
Compared with the prior art, the vibrating motor provided by the utility model has the advantages that the driven shaft can regularly swing through the matching of the shell, the driving shaft, the driven shaft, the rebounding device, the first end disc and the second end disc, the driven shaft is in non-rigid connection with the driving shaft, effective overload protection can be provided, and the working reliability of the motor is improved. Compare in traditional mode that sets up coil winding and realize reciprocating swing, this application can also improve the waterproof performance of motor.
Drawings
Fig. 1 is a schematic view of a vibration motor according to an embodiment of the present invention;
fig. 2 is a schematic view of a first end disc and a second end disc portion of a vibration motor according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a magnetic pole distribution of a first end disk of a vibration motor according to an embodiment of the present invention;
fig. 4 is a schematic view of a mount portion of a vibration motor according to an embodiment of the present invention;
fig. 5 is a schematic view of a scroll-like elastic member portion of a vibration motor according to an embodiment of the present invention;
fig. 6 is a schematic view of an arc-shaped connection portion of a vibration motor according to an embodiment of the present invention;
fig. 7 is a schematic view illustrating an S-shaped structure of an elastic member of a vibration motor according to an embodiment of the present invention;
fig. 8 is a schematic view of a contact end portion of an elastic member of a vibration motor according to an embodiment of the present invention.
Description of reference numerals: 1. a housing; 2. a drive shaft; 3. a driven shaft; 31. a connecting surface; 4. a rebounding device; 41. a vibrator; 42. an elastic member; 421. an arc-shaped contact surface; 422. an arc-shaped connecting part; 423. an S-shaped structure; 424. a contact end; 43. a mounting seat; 431. connecting grooves; 5. a first end disc; 51. a magnetic member; 52. a cavity; 6. a second end disc; 61. a soft magnetic body; 62. separating the groove.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1 to 3 together, a vibration motor according to the present invention will now be described. The vibration motor in the present application is not limited to the application to the electric toothbrush, but may be applied to a massager. The vibration motor comprises a shell 1, a driving shaft 2, a driven shaft 3, a rebound device 4, a first end disc 5 and a second end disc 6; the driving shaft 2 and the driven shaft 3 are both in running fit with the shell 1, and one end of the driven shaft 3 is suitable for extending out of the shell 1; the rebounding device 4 has a first end connected to the driven shaft 3, and a second end connected to the housing 1; one end of the first end disc 5 is provided with a plurality of magnetic pieces 51, the magnetic pieces 51 are arranged along the circumferential direction of the first end disc 5, and the polarities of the magnetic pieces 51 are alternately distributed; the second end disc 6 is coaxially arranged with the first end disc 5, and a cavity 52 is formed between the second end disc 6 and the first end disc 5; one end of the second end disc 6 close to the first end disc 5 is provided with a plurality of soft magnets 61 corresponding to the magnetic members 51 one by one, and a separation groove 62 is formed between the adjacent soft magnets 61; wherein, one end of the first end disc 5 departing from the magnetic element 51 is connected with the driving shaft 2, and one end of the second end disc 6 departing from the soft magnet 61 is connected with the driven shaft 3; or one end of the first end disc 5 departing from the magnetic part 51 is connected with the driven shaft 3, and one end of the second end disc 6 departing from the soft magnet 61 is connected with the driving shaft 2; the driven shaft 3 has a first state adapted to rotate in the forward direction with the driving shaft 2, and a second state reversely returned by the resilient force of the resilient device 4.
In the embodiment of the application, the first end disc 5 can be fixed on the driving shaft 2 and also can be fixed on the driven shaft 3, and when the first end disc 5 is fixed on the driving shaft 2, the second end disc 6 is fixed on the driven shaft 3; when the first end disc 5 is fixed on the driven shaft 3, the second end disc 6 is fixed on the driving shaft 2; the soft magnet 61 on the second end disk 6 is easy to magnetize and demagnetize, and when the second end disk 6 and the first end disk 5 rotate relatively, magnetic pole coupling force exists between the first end disk 5 and the second end disk 6; therefore, the driven shaft 3 can rotate along with the rotation of the driving shaft 2, and after the driven shaft 3 rotates in the positive direction, the rebounding device 4 can provide rebounding force for the driven shaft 3, so that the driven shaft 3 is reversely rotated and reset; repeating the above process can realize the reciprocating swing of the driven shaft 3. The resilience force that resilient means 4 provided has a linear relation with the turned angle of driven shaft 3, and the resilience force that resilient means 4 provided is consequently comparatively stable, can make the regular swing of driven shaft 3, is convenient for improve clean tooth effect.
Compared with the prior art, the vibrating motor provided by the utility model has the advantages that the driven shaft 3 can regularly swing through the matching of the shell 1, the driving shaft 2, the driven shaft 3, the rebounding device 4, the first end disc 5 and the second end disc 6, the driven shaft 3 is in non-rigid connection with the driving shaft 2, effective overload protection can be provided, and the working reliability of the motor is improved. Compare in traditional mode that sets up coil winding and realize reciprocating swing, this application can also improve the waterproof performance of motor.
In some embodiments, as shown in fig. 2 and 4, the rebounding device 4 includes a vibrator 41, an elastic member 42, and a mounting seat 43; the mounting seat 43 is provided with a connecting groove 431, and the vibrator 41 is positioned in the connecting groove 431 and has a degree of freedom suitable for reciprocating swing along the connecting groove 431; one end of the elastic member 42 is connected with the vibrator 41, and the other end of the elastic member 42 is connected with the mounting seat 43; the mounting seat 43 is fixed on the shell 1, and a through hole suitable for the driven shaft 3 to penetrate is formed in the mounting seat 43; the vibrator 41 is fixed on the driven shaft 3; the elastic piece 42 is a spring plate with a V-shaped structure, the vibrators 41 are two pieces which are oppositely arranged relative to the driven shaft 3, and the mounting seat 43 is provided with connecting grooves 431 which are in one-to-one correspondence with the two vibrators 41; elastic pieces are arranged on two sides of each vibrator 41, one end of each elastic piece is abutted to the vibrator 41, and the other end of each elastic piece is fixed on the mounting seat 43. When the driven shaft 3 rotates in the positive direction, the vibrator 41 rotates along with the driven shaft 3, so that the elastic sheet on one side of the vibrator 41 is compressed, the opening is reduced, and the opening of the elastic sheet on the other side of the vibrator 41 is enlarged; the elastic force of the compressed elastic sheet is greater than that of the elastic sheet on the other side of the vibrator 41, so that the compressed elastic sheet can provide resilience force to the vibrator 41, and the vibrator 41 is enabled to be reversely rotated and reset.
In some embodiments, as shown in fig. 2 and 4, the abutting end of the elastic sheet is provided with an arc-shaped contact surface 421, a convex surface of the arc-shaped contact surface 421 contacts with the vibrator 41, and a concave surface of the arc-shaped contact surface 421 faces the elastic sheet itself; through the arrangement, in the swinging process of the vibrator 41, the scratching of the vibrator 41 by the elastic sheets can be reduced, and the service life of the vibrator 41 is further prolonged.
In some embodiments, as shown in fig. 2 and 5, the rebounding device 4 includes a spiral-structured elastic sheet, an inner end of the elastic sheet is connected to the driven shaft 3, and an outer end of the elastic sheet is connected to the driving shaft 2; when the driven shaft 3 rotates in the forward direction, the spiral elastic sheet is partially wound on the driven shaft 3, so that the spiral elastic sheet has resilience force for enabling the driven shaft 3 to reset in a reverse mode, and the driven shaft 3 is convenient to reset in the reverse mode.
In some embodiments, as shown in fig. 2 and 6, the rebounding device 4 comprises two elastic blades that are rotationally symmetric about the axis of the driven shaft 3; the elastic sheet is provided with a first connecting end connected with the driven shaft 3 and a second connecting end connected with the shell 1; an arc-shaped connecting part 422 is arranged between the first connecting end and the second connecting end, and the concave surface of the arc-shaped connecting part 422 is suitable for facing the outer peripheral wall of the driven shaft 3; the arc-shaped connecting portion 422 enables the first connecting end to rotate positively along with the driven shaft 3, and then the elastic sheet provides resilience force for enabling the driven shaft 3 to reset reversely to the driven shaft 3.
In some embodiments, as shown in fig. 2 and 7, the resilient device 4 includes a resilient sheet, the resilient sheet is adapted to radially penetrate the driven shaft 3, and two ends of the resilient sheet are respectively connected to the housing 1; the both sides that the shell fragment wore out driven shaft 3 are S column structure 423, through the aforesaid setting, when driven shaft 3 forward rotation, can make the middle part of shell fragment follow driven shaft 3 and rotate, and then make the shell fragment provide the resilience force that makes driven shaft 3 reversal reset to driven shaft 3.
In some embodiments, as shown in fig. 2 and 8, the outer peripheral wall of the driven shaft 3 is provided with two opposite connecting surfaces 31, the resilient device 4 includes an elastic sheet with an arc-shaped structure, two ends of the elastic sheet extend towards the concave surface and form two contact ends 424, and the two contact ends 424 of the elastic sheet are respectively connected with the corresponding connecting surfaces 31; the convex surface of the elastic sheet is fixedly connected with the shell 1; when driven shaft 3 forward rotation, two contact jaw 424 of shell fragment rotate along with driven shaft 3, and then the shell fragment can take place deformation, and the shell fragment can provide the resilience force to driven shaft 3 for driven shaft 3 reversal resets.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A vibration motor, comprising:
a housing;
the driving shaft and the driven shaft are in rotating fit with the shell, and one end of the driven shaft is suitable for extending out of the shell;
a resilient device having a first end connected to the driven shaft and a second end connected to the housing;
the magnetic bearing comprises a first end disc, a second end disc and a magnetic bearing, wherein one end of the first end disc is provided with a plurality of magnetic pieces, the magnetic pieces are arranged along the circumferential direction of the first end disc, and the magnetic pieces are distributed in an alternating mode; and
the second end disc is coaxially arranged with the first end disc, and a cavity is formed between the second end disc and the first end disc; one end of the second end disc close to the first end disc is provided with a plurality of soft magnets which are in one-to-one correspondence with the magnetic pieces, and a separation groove is formed between every two adjacent soft magnets;
one end of the first end disc, which is far away from the magnetic part, is connected with the driving shaft, and one end of the second end disc, which is far away from the soft magnet, is connected with the driven shaft; or one end of the first end disc, which is far away from the magnetic part, is connected with the driven shaft, and one end of the second end disc, which is far away from the soft magnet, is connected with the driving shaft;
the driven shaft has a first state suitable for rotating in the forward direction along with the driving shaft and a second state capable of reversely returning under the action of the resilience force of the resilient device.
2. The vibration motor of claim 1, wherein the resilient means comprises a vibrator, an elastic member, and a mount; the mounting seat is provided with a connecting groove, the vibrator is positioned in the connecting groove and has a degree of freedom suitable for swinging back and forth along the connecting groove; one end of the elastic piece is connected with the vibrator, and the other end of the elastic piece is connected with the mounting seat;
the mounting seat is fixed on the shell and is provided with a through hole suitable for the driven shaft to penetrate through; the vibrator is fixed on the driven shaft.
3. The vibration motor of claim 2, wherein the elastic member is a V-shaped spring.
4. The vibration motor according to claim 3, wherein the number of the spring pieces is two, and the two spring pieces are respectively located at both sides of the vibrator; one end of the elastic sheet is abutted to the vibrator.
5. The vibration motor of claim 4, wherein the abutting end of the spring plate is provided with an arc-shaped contact surface.
6. The vibration motor of claim 1, wherein the resilient means comprises a resilient plate having a spiral structure, an inner end of the resilient plate is connected to the driven shaft, and an outer end of the resilient plate is connected to the driving shaft.
7. The vibration motor of claim 1, wherein the resilient means comprises two resilient pieces rotationally symmetric about the axis of the driven shaft; the elastic sheet is provided with a first connecting end connected with the driven shaft and a second connecting end connected with the shell.
8. The vibration motor of claim 7, wherein the first connection end and the second connection end have an arc-shaped connection portion therebetween, and a concave surface of the arc-shaped connection portion is adapted to face the outer peripheral wall of the driven shaft.
9. The vibration motor of claim 1, wherein the resilient means comprises a resilient plate adapted to radially penetrate the driven shaft, and both ends of the resilient plate are respectively connected to the housing.
10. The vibration motor according to claim 1, wherein the outer peripheral wall of the driven shaft is provided with two opposite connecting surfaces, the resilient means comprises an elastic sheet having an arc-shaped structure, two ends of the elastic sheet extend towards the concave surface and form two contact ends, and the two contact ends of the elastic sheet are respectively connected with the corresponding connecting surfaces; the convex surface of the elastic sheet is fixedly connected with the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122978337.8U CN216414151U (en) | 2021-11-30 | 2021-11-30 | Vibration motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122978337.8U CN216414151U (en) | 2021-11-30 | 2021-11-30 | Vibration motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216414151U true CN216414151U (en) | 2022-04-29 |
Family
ID=81304623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122978337.8U Active CN216414151U (en) | 2021-11-30 | 2021-11-30 | Vibration motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216414151U (en) |
-
2021
- 2021-11-30 CN CN202122978337.8U patent/CN216414151U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220812 Address after: 523000 No.7, Baiye Avenue, Baiye industrial city, Hengkeng village, Liaobu Town, Dongguan City, Guangdong Province Patentee after: JINLONG MACHINERY & ELECTRONICS (DONGGUAN) CO.,LTD. Address before: 518100 floors 2-5, building 2, Tangtou third industrial zone, Tangtou community, Shiyan street, Bao'an District, Shenzhen, Guangdong Province Patentee before: SHENZHEN JIAAI MOTOR Co.,Ltd. |