CN108063534B - Device capable of reciprocating swing - Google Patents
Device capable of reciprocating swing Download PDFInfo
- Publication number
- CN108063534B CN108063534B CN201810029900.7A CN201810029900A CN108063534B CN 108063534 B CN108063534 B CN 108063534B CN 201810029900 A CN201810029900 A CN 201810029900A CN 108063534 B CN108063534 B CN 108063534B
- Authority
- CN
- China
- Prior art keywords
- rotor
- tooth
- stator
- teeth
- rotating shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005389 magnetism Effects 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
-
- 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
- H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
-
- 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
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The invention discloses a device capable of reciprocating swinging, which comprises a stator and a rotor which are matched with each other, wherein the stator enables the rotor to reciprocate through magnetic force, the rotor comprises a rotating shaft, N rotor teeth with magnetism are uniformly arranged on the rotating shaft along the circumferential direction of the rotating shaft, the tooth tops and tooth roots of the rotor teeth are respectively two poles of a magnetic field, and the magnetic poles at the tooth tops of the adjacent rotor teeth are opposite.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a device capable of swinging reciprocally.
Background
The traditional iron core direct current vibration micro motor has wide application in vibration products such as face massager, health care equipment, personal care and the like. The traditional iron core direct current vibration motor drives the product to vibrate through the integral vibration of the iron core direct current vibration motor, has limited vibration amplitude and short service life, has the trend of being replaced by a reciprocating type swinging device in the application of some massage equipment, and the reciprocating type swinging device has the advantages of large swing amplitude, stable swing beat, high reliability, long service life and the like. Along with popularization of application of the reciprocating type swinging device, people correspondingly put forward higher requirements on the reciprocating type swinging device, such as driving a larger brush head, and the reciprocating type swinging device has larger reciprocating swing amplitude under the same beat.
Disclosure of Invention
In order to solve the technical problems, the invention provides a device capable of reciprocating and swinging.
The technical proposal is as follows: the utility model provides a device that can reciprocate, includes mutually supporting stator and rotor, the stator makes the rotor take place reciprocal gyration through magnetic force effect, its characterized in that: the rotor comprises a rotating shaft, N rotor teeth with magnetism are uniformly arranged on the rotating shaft along the circumferential direction of the rotating shaft, tooth roots of the rotor teeth are close to the axial lead of the rotating shaft, tooth tops of the rotor teeth are far away from the axial lead of the rotating shaft, tooth tops and tooth roots of the rotor teeth are respectively two poles of a magnetic field, magnetic poles of tooth tops of adjacent rotor teeth are opposite, and N is an integer larger than 2. By adopting the technical scheme, as the rotor teeth are annularly distributed, a plurality of rotor teeth can be arranged on one rotating shaft, and the more the rotor teeth are arranged, the larger the sum of torque forces acting between the rotor and the stator is, the better the effect of pushing the rotating shaft to rotate is.
As a further preferred option:
the rotary shaft is sleeved with a cylindrical rotor core, N strip-shaped tooth grooves are formed in the surface of the rotor core, all tooth grooves are uniformly distributed around the rotary shaft, each tooth groove is respectively provided with one rotor tooth, and the tooth top surface of each rotor tooth is higher than the notch of each tooth groove. By adopting the scheme, the gap between the rotor teeth and the stator is smaller, the weakening effect of air on the magnetic field of the rotor teeth is lower, and the magnitude of acting force between the rotor teeth and the stator is improved.
The cross section of the rotor teeth is tile-shaped, and the center line of the rotor teeth coincides with the axis line of the rotating shaft. The rotor teeth with the structure have larger top area, and are beneficial to improving the acting force between the rotor teeth and the stator.
The stator comprises a cylindrical stator core, the rotating shaft is inserted into the stator core, N stator teeth are uniformly distributed on the inner wall of the stator core, the rotor teeth face to gaps between adjacent stator teeth, coil windings are wound on the stator teeth, and magnetic poles of magnetic fields generated by the coil windings on the adjacent stator teeth are opposite. After the coil winding is electrified by adopting the scheme, the polarities on the adjacent stator teeth are different, the rotor and the adjacent two stators are mutually arranged or attracted due to the different polarities so as to generate relative swing, and the rotor swings towards the other direction after the current direction is changed.
The stator teeth are composed of tooth root parts and tooth top parts, wherein the tooth root parts are fixed on the inner wall of the stator iron core, the tooth top parts are of a C-shaped structure composed of two salient poles, the tooth top surfaces of the rotor teeth face to gaps between adjacent salient poles of the adjacent stator teeth, and the center line of the tooth top parts coincides with the axial lead of the rotating shaft. The adoption of the scheme has the advantages that the space between the two salient poles of the stator teeth is larger, the coverage area of the magnetic field generated on the stator teeth is enlarged, the swing angle of the rotor is improved, the gap between the stator teeth and the rotor is smaller when the stator teeth and the rotor are matched with each other, and the matching degree is better.
And a reluctance groove is excavated in the middle of the top surface of the tooth top, and the notch of the reluctance groove is opposite to the axial lead of the stator core. By adopting the scheme, a swing limiting mechanism can be arranged between the stator and the rotor to limit the swing angle of the rotor, but after the rotor is twisted by a certain angle by external force in a non-electrified state, the attractive force between the magnet and the rotor teeth of the magnetic resistance groove accessory is reduced because the magnetic field between the magnet and the stator teeth on the rotor is greatly reduced by the magnetic resistance groove, and the magnet can reach the position between the magnet and the rotor teeth under the balance of the force between the magnet and the adjacent two stator teeth, namely, the magnet is always kept at the initial position.
The magnetic resistance groove is a crescent groove. With the structure, the rotor teeth have more and more remarkable magnetic resistance effect in the magnetic resistance grooves in the process of turning the magnetic resistance grooves, so that the rotor teeth stop rotating gradually and finally return to the preset initial position.
The above N is either four, or six, or eight.
The rotor teeth are made of magnetic steel.
The beneficial effects are that: after the coil windings are electrified, the rotating shaft is pushed to rotate by the attractive force or repulsive force of the magnetic field on the stator teeth and the magnetic field polarity on the rotor teeth, the rotor teeth and the stator teeth are in a circumferential arrangement mode, the space utilization efficiency is higher, more tooth-shaped structures can be arranged in the same space, more coil windings are wound, the torque force of the rotor is effectively improved, the swing inertia of the rotor is not improved, the heat of the coil windings is lower, and the service life is longer.
Drawings
FIG. 1 is a schematic view of a first view plane structure according to the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a cross-sectional view B-B of FIG. 3;
FIG. 5 is a cross-sectional view of C-C of FIG. 3;
FIG. 6 is a schematic view of a second view plane structure according to the present invention;
FIG. 7 is a D-D sectional view of FIG. 6;
FIG. 8 is an exploded view of the present invention;
FIG. 9 is a schematic view of a first operating condition;
fig. 10 is a schematic view of the second operating state.
Detailed Description
The invention is further described below with reference to examples and figures.
Embodiment 1, but device of reciprocal wobbling, as shown in fig. 4-5, including mutually supporting stator and rotor, the stator makes the rotor take place reciprocal gyration through magnetic force effect, the rotor includes pivot 1, evenly install N rotor tooth 7 that have magnetism along its circumference on the pivot 1, rotor tooth 7's tooth root is close to the axial lead of pivot 1, and its tooth top is kept away from the axial lead of pivot 1, rotor tooth 7's tooth top and tooth root are the dipolar pole of magnetic field respectively, and adjacent rotor tooth 7 tooth top department's magnetic pole is opposite, and N is the integer that is greater than 2.
The rotary shaft 1 is provided with a cylindrical rotor iron core 5, N strip-shaped tooth grooves are formed in the surface of the rotor iron core 5, all tooth grooves are uniformly distributed around the rotary shaft 1, each tooth groove is respectively provided with one rotor tooth 7, the tooth top surface of each rotor tooth 7 is higher than the notch of each tooth groove, the cross section of each rotor tooth 7 is tile-shaped, the circular axis of each rotor tooth 7 coincides with the axis of the rotary shaft 1, and the rotor tooth 7 is made of magnetic steel.
The stator comprises a cylindrical stator core 9, the rotating shaft 1 is inserted into the stator core 9, N stator teeth 9a are uniformly distributed on the inner wall of the stator core 9 along the circumferential direction of the inner wall, the rotor teeth 7 face to gaps between adjacent stator teeth 9a, coil windings 10 are wound on the stator teeth 9a, magnetic poles of magnetic fields generated by the coil windings 10 on the adjacent stator teeth 9a are opposite, and preferably, N is four, six or eight.
Specifically, the stator teeth 9a are formed by tooth root portions and tooth top portions, the tooth root portions of the stator teeth 9a are fixed on the inner wall of the stator iron core 9, the tooth top portions of the stator teeth 9a are of a 'C' -shaped structure formed by two salient poles, tooth top surfaces of the rotor teeth 7 face to gaps between adjacent salient poles of the stator teeth 9a, a circular axis line of the tooth top portions of the stator teeth 9a coincides with an axis line of the rotating shaft 1, a reluctance groove 9C is excavated in the middle of the top surface of the tooth top portions of the stator teeth 9a, a notch of the reluctance groove 9C faces to the axis line of the stator iron core 9, and the reluctance groove 9C is preferably a crescent groove, but the reluctance groove 9C can also be any other groove.
Embodiment 2, a miniature reciprocating swing motor, as shown in fig. 1-8, including casing 4, install the device that can reciprocate of embodiment 1 in this casing 4, stator core 9's outer wall with the inner wall fixed connection of casing 4, casing 4 is the tubular structure that one end has little opening other end to have big opening, the big open end lock of casing 4 has end cover 13, the little open end internal fixation of casing 4 has first bearing 2, the middle part of end cover 13 outwards protrudes and forms the bearing mounting groove, installs second bearing 11 in this bearing mounting groove, the outer end of pivot 1 stretches out through first bearing 2 the little open end of casing 4, the inner of pivot 1 is installed on end cover 13 through second bearing 11.
The rotor core 5 with be equipped with the pipe box 3 on the pivot 1 between the first bearing 2, the both ends of this pipe box 3 butt respectively on rotor core 5 and the first bearing 2, the rotor core 5 with the cover is equipped with adjusting spring 6 on the pivot 1 between the second bearing 11, the both ends of adjusting spring 6 butt respectively on the second bearing 11 with on the rotor core 5.
In order to achieve a precise positioning of the rotor teeth 7, a wobble limiting mechanism is provided between the stator and the rotor, which limits the wobble distance of the rotor teeth 7 between adjacent stator teeth 9 a.
The swing limiting mechanism comprises two annular end pieces 8, two cylinder openings of the stator core 9 are respectively provided with one end piece 8, N limiting blocks 8a with the same shape as the stator teeth 9a are uniformly arranged on the inner ring of the end piece 8, the coil winding 10 is wound on the tooth root parts of the stator teeth 9a and the root parts of the limiting blocks 8a at the two ends of the stator teeth 9a, limiting stop blocks 8b are respectively arranged on the outer side surfaces of the two free ends of the limiting blocks 8a, an annular limiting stop piece 12 is sleeved outside the adjusting spring 6, the inner side surface of the limiting stop piece 12 is fixedly bonded with the rotor core 5, each limiting block 12a is respectively provided with a limiting block 12a, the limiting blocks 12a extend out along the radial direction of the rotating shaft 1, and the limiting blocks 12a swing between the two corresponding limiting stop blocks 8b on the limiting blocks 8 a.
In order to make the installation of the limit baffle 12 more firm, a clamping column 12b is respectively arranged on the inner side surface of the limit baffle 12 corresponding to each rotor tooth 7, the length of each rotor tooth 7 is smaller than that of the rotor core 5, and the clamping columns 12b extend into the corresponding tooth grooves along the radial direction and are clamped.
In order to better realize insulation isolation, two insulation short sleeves 8c are respectively inserted in gaps between adjacent stator teeth 9a, the inner ends of the two insulation short sleeves 8c are in butt joint, the outer wall of each insulation short sleeve 8c is attached to the surface of each stator tooth 9a, and the outer ends of the two insulation short sleeves 8c are respectively fixedly connected with corresponding limiting parts 8a on the end piece 8.
The stator teeth 9a on the stator iron core 9 and the stator iron core are made of the same material, the stator iron core and the stator iron core are integrally formed, the coil windings 10 on the stator teeth 9a are connected in series, the winding directions of the adjacent coil windings 10 are opposite, the tooth tops and tooth roots of the rotor teeth 7 are respectively two poles of the magnetic field, the magnetic poles of the tooth tops of the adjacent rotor teeth 7 are opposite, when the coil windings 10 are electrified with positive and negative alternating currents with a certain beat, the alternating magnetic field is generated on the stator teeth 9a and interacts with the rotor teeth 7, so that the rotor swings reciprocally according to the input beat, and the reciprocating swing with a fixed beat is formed.
As shown in fig. 9, when the motor is energized in the forward direction, the stator teeth 9a form a magnetic field and the rotor swings clockwise a fixed angle under the interaction of the magnetic field formed by the rotor teeth 7. When the motor is energized in reverse, as shown in fig. 10, the stator teeth 9a form a magnetic field that is just opposite to that shown in fig. 9, and the rotor swings back counter-clockwise by a fixed angle under the interaction of the magnetic field formed by the rotor teeth 7. When the motor is electrified alternately in the forward direction and the reverse direction with a certain beat, the rotor swings back and forth in a reciprocating manner according to the frequency; in the unpowered state, the rotor teeth 7 are always positioned in the intermediate position between the two corresponding stator teeth 9a in balance with the attractive force therebetween. Because the rotor of the traditional iron core direct current vibration motor continuously rotates, vibration is obtained by adding an eccentric block on the rotating shaft, and the disadvantage is that: the product has a short service life, the vibration mode provides vibration through the integral vibration of the product, and the product cannot output obvious swing amplitude, so that the product has poor effect on some applications requiring larger-amplitude massage and cleaning. In contrast, the device capable of reciprocating swinging provided by the invention has the advantages of more compact structure, large working swing, low noise, long service life and good stability, can realize accurate positioning of the initial position, and can be widely applied to products such as face massagers, cleaning products and the like.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides a device that can reciprocate, includes mutually supporting stator and rotor, the stator makes the rotor take place reciprocal gyration through magnetic force effect, its characterized in that: the rotor comprises a rotating shaft (1), N rotor teeth (7) with magnetism are uniformly arranged on the rotating shaft (1) along the circumferential direction of the rotating shaft, tooth roots of the rotor teeth (7) are close to the axial line of the rotating shaft (1), tooth tops of the rotor teeth are far away from the axial line of the rotating shaft (1), tooth tops and tooth roots of the rotor teeth (7) are respectively two poles of a magnetic field, magnetic poles at tooth tops of adjacent rotor teeth (7) are opposite, and N is an integer larger than 2;
the rotary shaft (1) is provided with a cylindrical rotor core (5), N strip-shaped tooth grooves are formed in the surface of the rotor core (5), all tooth grooves are uniformly distributed around the rotary shaft (1), each tooth groove is respectively provided with one rotor tooth (7), the tooth top surface of each rotor tooth (7) is higher than the notch of each tooth groove, and the rotor tooth (7) is made of magnetic steel.
2. A reciprocatingly swingable apparatus according to claim 1, wherein: the cross section of the rotor teeth (7) is tile-shaped, and the center line of the rotor teeth (7) coincides with the axis line of the rotating shaft (1).
3. A reciprocatingly swingable apparatus according to claim 2, wherein: the stator comprises a cylindrical stator core (9), the rotating shaft (1) is inserted into the stator core (9), N stator teeth (9 a) are uniformly distributed on the inner wall of the stator core (9), the rotor teeth (7) face the adjacent gaps between the stator teeth (9 a), coil windings (10) are wound on the stator teeth (9 a), and magnetic poles of magnetic fields generated by the coil windings (10) on the adjacent stator teeth (9 a) are opposite.
4. A reciprocatingly swingable apparatus according to claim 3, wherein: the stator teeth (9 a) are composed of tooth root parts and tooth top parts, wherein the tooth root parts are fixed on the inner wall of the stator iron core (9), the tooth top parts are of a C-shaped structure composed of two salient poles, the tooth top surfaces of the rotor teeth (7) face to gaps between adjacent salient poles of the adjacent stator teeth (9 a), and the center line of the tooth top parts coincides with the axial lead of the rotating shaft (1).
5. A reciprocatingly swingable apparatus according to claim 4, wherein: and a reluctance groove (9 c) is excavated in the middle of the top surface of the tooth top, and the notch of the reluctance groove (9 c) is opposite to the axial lead of the stator core (9).
6. A reciprocatingly swingable apparatus according to claim 5, wherein: the magnetic resistance groove (9 c) is a crescent groove.
7. A reciprocatingly swingable device according to any one of claims 1 to 6, wherein: the N is either four, or six, or eight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810029900.7A CN108063534B (en) | 2018-01-12 | 2018-01-12 | Device capable of reciprocating swing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810029900.7A CN108063534B (en) | 2018-01-12 | 2018-01-12 | Device capable of reciprocating swing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108063534A CN108063534A (en) | 2018-05-22 |
| CN108063534B true CN108063534B (en) | 2024-04-02 |
Family
ID=62141570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810029900.7A Active CN108063534B (en) | 2018-01-12 | 2018-01-12 | Device capable of reciprocating swing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108063534B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149895B (en) * | 2018-10-08 | 2019-08-02 | 哈尔滨工业大学 | A kind of novel vibration motor |
| CN110198113B (en) * | 2019-06-05 | 2024-04-26 | 重庆市仓兴达科技有限公司 | Micro motor with multi-dimensional reciprocating motion |
| CN110350754B (en) * | 2019-06-19 | 2024-04-26 | 艾博金电气制造（深圳）有限公司 | Vibrating motor and electric toothbrush |
| CN110556987A (en) * | 2019-10-17 | 2019-12-10 | 福一开集团有限公司 | Stator-free multi-loop energy-saving motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1697288A (en) * | 2005-05-27 | 2005-11-16 | 南京航空航天大学 | Consequent pole lamellate electric motor with no bearing |
| CN104578668A (en) * | 2015-02-03 | 2015-04-29 | 朱忠磊 | Small-sized high-frequency vibration device |
| CN105006942A (en) * | 2015-07-24 | 2015-10-28 | 深圳市仓兴达科技有限公司 | Miniature reciprocating type oscillator |
| CN207743840U (en) * | 2018-01-12 | 2018-08-17 | 深圳市仓兴达科技有限公司 | A kind of miniature reciprocally swinging structure |
-
2018
- 2018-01-12 CN CN201810029900.7A patent/CN108063534B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1697288A (en) * | 2005-05-27 | 2005-11-16 | 南京航空航天大学 | Consequent pole lamellate electric motor with no bearing |
| CN104578668A (en) * | 2015-02-03 | 2015-04-29 | 朱忠磊 | Small-sized high-frequency vibration device |
| CN105006942A (en) * | 2015-07-24 | 2015-10-28 | 深圳市仓兴达科技有限公司 | Miniature reciprocating type oscillator |
| CN207743840U (en) * | 2018-01-12 | 2018-08-17 | 深圳市仓兴达科技有限公司 | A kind of miniature reciprocally swinging structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108063534A (en) | 2018-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108063534B (en) | Device capable of reciprocating swing | |
| US9385578B2 (en) | Magnetic spring system for use in a resonant motor | |
| JP5919280B2 (en) | Resonant actuator for electric toothbrush using magnetic action | |
| JP5842789B2 (en) | Actuator and electric hairdressing beauty instrument | |
| CN105006942B (en) | A kind of Miniature reciprocating wig-wag | |
| EP3203607A1 (en) | Medical pump | |
| WO2020244275A1 (en) | Miniature motor enabling multi-dimensional reciprocating movement | |
| CN108206617A (en) | A kind of motor of miniature reciprocating rotation | |
| CN212969400U (en) | Improved structure type sound wave motor | |
| TWI696538B (en) | Actuator and electric beauty appliance | |
| CN208955822U (en) | A kind of new micro vibrator | |
| CN208955875U (en) | The miniature reciprocally swinging device of long arc | |
| CN212969399U (en) | Improved structure type sound wave motor | |
| JP2004056974A (en) | Rotary electric machine | |
| CN207743803U (en) | New micro reciprocating rotation motor | |
| CN207743840U (en) | A kind of miniature reciprocally swinging structure | |
| CN109302038A (en) | A kind of electric machine structure of miniature reciprocally swinging | |
| CN214959221U (en) | Magnetic suspension electric toothbrush vibrating motor | |
| CN109672361A (en) | A kind of single-phase rotary ultrasonic wave motor of parallel-connection driving type | |
| KR102571343B1 (en) | Commutation-less DC motor using symmetrically structured the same directional rotation-wise magnetic fields and axis-wise magnetic fields generated around air-gap between rotor and stator | |
| US11888360B2 (en) | Brush motor | |
| CN212969401U (en) | Improved structure type sound wave motor | |
| CN217010492U (en) | Sound wave motor with external coil and electric toothbrush | |
| CN218071116U (en) | Tooth-slot-free stator assembly of direct-current brushless motor, direct-current brushless motor and tooth set | |
| CN219420543U (en) | Swing vibration motor and electronic product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240225 Address after: 408000 No. 133, Julong Road, New District, Fuling District, Chongqing Applicant after: CHONGQING CANGXINGDA TECHNOLOGY CO.,LTD. Country or region after: China Address before: Room A701, Tianan science and Technology Pioneer Park building, chegongmiao, Futian District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN CANGXINGDA TECHNOLOGY Co.,Ltd. Country or region before: China |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |