CN109698564B - High-frequency fixed angle motor - Google Patents
High-frequency fixed angle motor Download PDFInfo
- Publication number
- CN109698564B CN109698564B CN201910090723.8A CN201910090723A CN109698564B CN 109698564 B CN109698564 B CN 109698564B CN 201910090723 A CN201910090723 A CN 201910090723A CN 109698564 B CN109698564 B CN 109698564B
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- China
- Prior art keywords
- permanent magnet
- fixed angle
- motor
- frequency fixed
- rotor assembly
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/223—Rotor cores with windings and permanent magnets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/221—Control arrangements therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The application relates to the technical field of motors, in particular to a high-frequency fixed angle motor, which comprises a motor shell, and a rotor component and a stator component which are respectively arranged in the motor shell; the rotor assembly is arranged between the stator assemblies, and the high-frequency fixed angle motor further comprises a first permanent magnet and a limiting magnetic assembly; the limiting magnetic assembly is fixedly arranged in the motor shell and positioned at one side of the rotor assembly, and comprises two second permanent magnets which are symmetrically arranged; the first permanent magnet is fixedly arranged on the rotor assembly and is positioned between the two second permanent magnets; the magnetic poles of the first permanent magnet and the two second permanent magnets repel each other, and when the high-frequency fixed angle motor works, the rotor assembly rotates reciprocally within a set angle range; the first permanent magnet and the limiting magnetic assembly limit and reset the rotor assembly, so that the structure is more stable, the service life is long, and the noise is low.
Description
Technical Field
The application relates to the technical field of motors, in particular to a high-frequency fixed angle motor.
Background
Electric toothbrushes are new products in recent years, and a revolution in the field of oral health care has been raised abroad. Although the application of electric toothbrushes in China is not popular, it is predicted that electric toothbrushes become an important member of the public health products. Investigation shows that the electric toothbrush is more scientific and effective than the common toothbrush. Can more thoroughly remove dental plaque, reduce gingivitis and gingival bleeding, and is also a daily product which is popular in a plurality of countries in Europe and America at present. The electric toothbrush can make the brush head generate high-frequency vibration through rapid rotation, so that the toothpaste is instantaneously decomposed into fine foam to deeply clean the tooth gaps; at the same time, the vibration of the brush hair can promote the blood circulation of the oral cavity and has unexpected massage effect on gum tissues.
In principle, there are two main categories of electric toothbrushes: rotation and vibration. The rotary toothbrush has simple principle, namely, the motor drives the round brush head to rotate, and the friction effect is enhanced while the common tooth brushing action is executed. Vibration type toothbrushes are more complex and more expensive. The vibration type toothbrush has an electrically driven vibration motor inside, which can make the brush head generate high frequency swing perpendicular to the direction of the brush handle, but the swing amplitude is very small, generally about 5 mm. On the one hand, the high-frequency swinging brush head can efficiently finish the tooth brushing action during tooth brushing, on the other hand, the vibration exceeding 20000 times per minute can also enable the mixture of toothpaste and water in the nozzle to generate a large number of tiny bubbles, and the pressure generated during foaming burst can penetrate into the slits between teeth to clean dirt.
The existing toothbrush motor mostly adopts a spring or other elastic parts to limit and reset the rotor in the motor, after the toothbrush motor continuously runs for a period of time, the surface of the spring is damped and oxidized, torsion is reduced, the swinging pair degree is irregular, noise is increased or the phenomenon of stopping is caused, and the service life is short, so the application provides an improvement scheme aiming at the problems.
Disclosure of Invention
The application aims to provide a vibrating motor which adopts the principle of magnetic pole repulsion to limit the rotation angle.
In order to achieve the above purpose, the present application provides the following technical solutions:
a high-frequency fixed angle motor comprises a motor shell, a rotor component and a stator component, wherein the rotor component and the stator component are respectively arranged in the motor shell; the rotor assembly is arranged between the stator assemblies, and the high-frequency fixed angle motor further comprises a first permanent magnet and a limiting magnetic assembly; the limiting magnetic assembly is fixedly arranged in the motor shell and positioned at one side of the rotor assembly, and comprises two second permanent magnets which are symmetrically arranged; the first permanent magnet is fixedly arranged on the rotor assembly and is positioned between the two second permanent magnets; the magnetic poles of the first permanent magnet and the two second permanent magnets repel each other, and when the high-frequency fixed angle motor works, the rotor assembly rotates reciprocally within a set angle range.
Preferably, the rotor assembly comprises a rotating shaft, an iron core provided with windings and a mounting piece; the motor comprises a motor shell, a rotating shaft, a mounting piece, an iron core, a first permanent magnet, a second permanent magnet, a motor cover and a motor cover.
Preferably, the motor housing comprises a base and an upper shell covered on the base; the base is provided with a rotating space, the first permanent magnet is arranged in the rotating space, and the second permanent magnet is fixedly arranged on the base.
Preferably, a limiting sleeve is arranged on the rotating shaft.
Preferably, an elastic gasket is further arranged on the rotating shaft.
Preferably, the rotation angle of the rotating shaft ranges from-30 degrees to +30 degrees.
Preferably, the first permanent magnet and the second permanent magnet are both magnetic steel.
Compared with the prior art, the application has the beneficial effects that:
1. the spring motor in the prior art is replaced, the rotor assembly is limited and reset through the first permanent magnet and the limiting magnetic assembly, the structure is more stable, the service life is long, and the noise is low;
2. the volume of the first permanent magnet is increased, so that the received magnetic force is increased, the magnetic field is effectively utilized, the movement range of the rotor assembly is regulated, and meanwhile, the torque of the high-frequency fixed angle motor is enhanced;
3. the spacing sleeve and the elastic gasket are additionally arranged, so that the space structure in the high-frequency fixed angle motor is optimized, and the gap between parts arranged on the rotating shaft is reduced, thereby reducing noise generated when the high-frequency fixed angle motor works.
Drawings
FIG. 1 is an exploded construction view of the present application;
FIG. 2 is a front view of the present application;
FIG. 3 is a cross-sectional view of A-A of FIG. 2;
FIG. 4 is a cross-sectional view of B-B in FIG. 2;
FIG. 5 is a cross-sectional view of C-C of FIG. 2;
FIG. 6 is a schematic view of a base structure according to the present application;
FIG. 7 is a table of test data according to the present application.
In the figure: 1-a motor housing; 2-a rotor assembly; 3-stator assembly; 4-a first permanent magnet; 5-limiting magnetic assembly; 10-a base; 11-an upper shell; 20-rotating shaft; 21-winding; 22-iron core; 23-mounting; 30-magnetic shoe; 50-a second permanent magnet; 100-rotation space; 200-installation space; 201-limiting sleeve; 202-elastic pad.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
A high-frequency fixed angle motor is applied to an electric toothbrush and drives a brush head on the electric toothbrush to reciprocate, as shown in fig. 1 to 6, and comprises a motor shell 1, and a rotor component 2 and a stator component 3 which are respectively arranged in the motor shell 1; the rotor assembly 2 is arranged between the stator assemblies 3; the high-frequency fixed angle motor further comprises a first permanent magnet 4 and a limit magnetic component 5; the limiting magnetic assembly 5 is fixedly arranged in the motor shell 1 and positioned at one side of the rotor assembly 2, and the limiting magnetic assembly 5 comprises two second permanent magnets 50 which are symmetrically arranged; the first permanent magnet 4 is fixedly arranged on the rotor assembly 2 and is positioned between the two second permanent magnets 50; a magnetic field A is formed between the two second permanent magnetic fields 50, the magnetic poles of the first permanent magnet 4 and the two second permanent magnets 50 repel each other, and when the high-frequency fixed angle motor works, the rotor assembly 2 rotates reciprocally within a set angle range.
In this embodiment, two first permanent magnets 4 and two spacing magnetic assemblies 5 are provided, and two spacing magnetic assemblies 5 are symmetrically arranged, so that the rotor assembly 2 rotates more stably.
Specifically, the motor housing 1 includes a base 10 and an upper case 11 covering the base 10; the base 10 is provided with a rotation space 100, two sides of the rotation space 100 are provided with installation spaces 200, and the installation spaces 200 are communicated with the rotation space 100.
Specifically, the stator assembly 3 includes two magnetic shoes 30, where the two magnetic shoes 30 are symmetrically disposed and fixedly disposed on the inner side wall of the upper shell 11, and a magnetic field B is formed between the two magnetic shoes 30.
Specifically, the rotor assembly 2 includes a rotating shaft 20, a core 22 provided with windings 21, and a mounting member 23.
One end of the rotating shaft 20 is rotatably arranged on the base 10, the other end of the rotating shaft 20 is rotatably arranged on the upper shell 11, and bearings are respectively arranged at the joints of the rotating shaft 20 and the base 10 and the upper shell 11, so that the rotating shaft 20 rotates stably.
The installation piece 23 is fixedly connected with the rotating shaft 20, one end of the installation piece 23 is connected with the iron core 22, and the iron core 22 is positioned between the two magnetic shoes 30; the other end of the mounting piece 23 extends into the rotation space 100, the second permanent magnets 50 are respectively and fixedly arranged in the mounting space 200, and the first permanent magnet 4 is fixedly arranged on the mounting piece 23 and positioned between the two second permanent magnets 20; the magnetic poles of the first permanent magnet 4 and the magnetic poles of the second permanent magnet 50 are arranged according to the same magnetic pole, for example, one end of the first permanent magnet 4 is an N pole, the other end of the first permanent magnet 4 is an S pole, the N pole of one second permanent magnet 20 faces the N pole of the first permanent magnet 4, and the S pole of the other second permanent magnet 20 faces the S pole of the first permanent magnet 4.
When the magnetic device works, the winding 21 is electrified, the iron core 22 drives the rotating shaft 20 to rotate through the mounting piece 23, when the rotation angle is gradually increased, the first permanent magnet 4 is closer to one of the second permanent magnets 50, and finally the acting force between the first permanent magnet 4 and the second permanent magnet 50 is equal to the torque of the rotating shaft 20 according to the homopolar mutual exclusion principle of the magnets, and the rotating shaft 20 stops rotating, so that the limiting magnetic assembly 5 realizes the limiting effect on the rotating shaft 20; the winding 21 receives the acting force in the opposite direction in the magnetic field B through the opposite direction current, the iron core 22 drives the rotating shaft 20 to rotate in the opposite direction through the mounting piece 23, the first permanent magnet 4 gets closer to the other of the second permanent magnets 50 until the acting force between the first permanent magnet 4 and the second permanent magnet 50 is equal to the torque of the rotating shaft 20, and the rotating shaft stops rotating, so that the reciprocating rotation of the rotating shaft 20 is realized.
Specifically, the rotating shaft 20 is provided with a limiting sleeve 201 and an elastic gasket 202; one end of the elastic spacer 202 is abutted against the inner side wall of the upper shell 11, the other end of the elastic spacer 202 is abutted against one end of the limit sleeve 201, and the other end of the limit sleeve 201 is abutted against the iron core 22; the spacing sleeve 201 and the elastic pad 202 are arranged, so that the space structure in the high-frequency fixed angle motor is optimized, and the gap between parts arranged on the rotating shaft 20 is reduced, thereby reducing noise generated when the high-frequency fixed angle motor works.
Specifically, the rotation angle of the rotating shaft 20 ranges from-30 ° to +30°; the applicant has found through experimental tests that the shaft 20 rotates within the above range, and the electric toothbrush is most comfortable in use.
Specifically, the first permanent magnet 4 and the second permanent magnet 50 are both magnetic steel, and are resistant to high temperature.
As shown in fig. 7, in this embodiment, the high-frequency fixed angle motor is input with an energizing frequency of 100 times per second, and after the high-frequency fixed angle motor is operated for 50 hours, a pressure load of 200g is applied to detect the working torque and noise of the high-frequency fixed angle, so as to obtain test data; under the same condition, the high-frequency fixed angle motor is compared with a spring motor in the prior art, so that the high-frequency fixed angle motor has the advantages of maximum swing angle, minimum noise and highest service life.
The beneficial effects are that:
(1) The spring motor in the prior art is replaced, the rotor assembly 2 is limited and reset through the first permanent magnet 4 and the limiting magnetic assembly 5, the structure is more stable, the service life is long, and the noise is low;
(2) By increasing the volume of the first permanent magnet 4, the received magnetic force is increased, the magnetic field is efficiently utilized, the movement range of the rotor assembly 2 is regulated, and meanwhile, the torque of the high-frequency fixed angle motor is enhanced;
(3) The spacing sleeve 201 and the elastic pad 202 are additionally arranged, so that the space structure in the high-frequency fixed angle motor is optimized, and the gap between parts arranged on the rotating shaft 20 is reduced, thereby reducing the noise generated when the high-frequency fixed angle motor works
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A high frequency fixed angle motor comprising a motor housing (1), and a rotor assembly (2) and a stator assembly (3) respectively arranged within the motor housing (1); the rotor assembly (2) is arranged between the stator assemblies (3), and is characterized in that the high-frequency fixed angle motor further comprises a first permanent magnet (4) and a limit magnetic assembly (5); the limiting magnetic assembly (5) is fixedly arranged in the motor shell (1) and is positioned on one side of the rotor assembly (2), and the limiting magnetic assembly (5) comprises two second permanent magnets (50) which are symmetrically arranged; the first permanent magnet (4) is fixedly arranged on the rotor assembly (2) and is positioned between the two second permanent magnets (50); the magnetic poles of the first permanent magnet (4) and the two second permanent magnets (50) repel each other, and when the high-frequency fixed angle motor works, the rotor assembly (2) rotates reciprocally within a set angle range.
2. The high frequency fixed angle motor according to claim 1, characterized in that the rotor assembly (2) comprises a rotating shaft (20), a core (22) provided with windings (21), and a mounting (23); the motor comprises a motor shell (2), a rotating shaft (20) and a mounting piece (23), wherein the rotating shaft (20) is rotationally connected with the motor shell (2), the mounting piece (23) is fixedly connected with the rotating shaft (20), an iron core (22) is fixedly connected to the mounting piece (23), and a first permanent magnet (4) is fixedly arranged on the mounting piece (23).
3. The high frequency fixed angle motor according to claim 2, wherein the motor housing (1) comprises a base (10) and an upper housing (11) covering the base (10); the base (10) is provided with a rotating space (100), the first permanent magnet (4) is arranged in the rotating space (100), and the second permanent magnet (50) is fixedly arranged on the base (10).
4. The high-frequency fixed angle motor according to claim 2, wherein a limit sleeve (201) is provided on the rotating shaft (20).
5. The high frequency fixed angle motor of claim 4, wherein the shaft (20) is further provided with a resilient spacer (202).
6. The high frequency fixed angle motor according to any one of claims 2 to 5, wherein the rotation angle of the rotating shaft (20) ranges between-30 ° and +30°.
7. The high frequency fixed angle motor according to any one of claims 1 to 5, wherein the first permanent magnet (4) and the second permanent magnet (50) are both magnetic steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910090723.8A CN109698564B (en) | 2019-01-30 | 2019-01-30 | High-frequency fixed angle motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910090723.8A CN109698564B (en) | 2019-01-30 | 2019-01-30 | High-frequency fixed angle motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109698564A CN109698564A (en) | 2019-04-30 |
| CN109698564B true CN109698564B (en) | 2023-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910090723.8A Active CN109698564B (en) | 2019-01-30 | 2019-01-30 | High-frequency fixed angle motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN109698564B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021097705A1 (en) * | 2019-11-20 | 2021-05-27 | 广州市瑞宝电器有限公司 | Reciprocal rotation electric motor |
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| DE10350445A1 (en) * | 2003-10-29 | 2005-06-02 | Braun Gmbh | Electric drive unit for generating an oscillating movement |
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| CN207625422U (en) * | 2017-10-19 | 2018-07-17 | 河南柏玛动力科技有限公司 | A kind of electric toothbrush magnetic suspension oscillating motor |
| CN207968277U (en) * | 2018-01-12 | 2018-10-12 | 番禺得意精密电子工业有限公司 | Vibrating motor |
| CN108521178A (en) * | 2018-06-12 | 2018-09-11 | 余姚市科达微电机制造有限公司 | A kind of restricted corner acoustic vibration motor of magnetic field quadrupole positioning |
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| CN109698564A (en) | 2019-04-30 |
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Address after: 523000, 7 building, 5 Industrial Zone, No. 3, Jun FA Road, Peng Wu Village, Dong Keng Town, Dongguan, Guangdong. Applicant after: Guangdong Tianfu Motor Technology Co.,Ltd. Address before: 523000, 7 building, 5 Industrial Zone, No. 3, Jun FA Road, Peng Wu Village, Dong Keng Town, Dongguan, Guangdong. Applicant before: DONGGUAN TIANFU MOTOR TECHNOLOGY Co.,Ltd. |
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