CN215498605U - Electric toothbrush motor and electric toothbrush - Google Patents
Electric toothbrush motor and electric toothbrush Download PDFInfo
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- CN215498605U CN215498605U CN202121769972.9U CN202121769972U CN215498605U CN 215498605 U CN215498605 U CN 215498605U CN 202121769972 U CN202121769972 U CN 202121769972U CN 215498605 U CN215498605 U CN 215498605U
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Abstract
The utility model provides an electric toothbrush motor and electric toothbrush, the electric toothbrush motor includes supporting component, a control subassembly, stator module, rotor subassembly and reset assembly, supporting component includes the shell and the first end cover of being connected shell one end, place the shell in the stator module, the rotor subassembly includes the pivot, rotor core and magnet, shell and first end cover are worn to establish in the pivot, the pivot is located to the rotor core cover, magnet is connected with rotor core magnetism, reset assembly is including rotating the seat, elastic component and fastener, rotate seat fixed connection pivot, the one end of elastic component is inserted and is located and rotate the seat, first end cover is connected to the other end, first end cover and elastic component are fixed to the fastener. This electric toothbrush motor is through inserting the one end with the elastic component and locating the rotation seat, and first end cover is connected to the other end, and through fixed first end cover of fastener and elastic component, the elastic component adopts spiral torsional spring, improves the fatigue resistance of elastic component, ensures the high-frequency vibration of motor, effectively solves the high frequency and twists reverse the problem that leads to the elastic component short-lived.
Description
Technical Field
The utility model relates to the technical field of driving motors, in particular to an electric toothbrush motor and an electric toothbrush.
Background
The electric toothbrush is a toothbrush, and the electric toothbrush can generate high-frequency vibration through the quick rotation or vibration of the motor core, decompose toothpaste into fine foam in the twinkling of an eye, go deep into the gap between the teeth, and has two main types: rotation and vibration. The rotary toothbrush is characterized in that the motor drives the circular brush head to rotate, the friction effect is enhanced while the common tooth brushing action is carried out, the rotary toothbrush is high in noise, the tooth surface is cleaned completely, gaps between teeth are relatively weak to clean, the teeth are abraded greatly, the electric driving vibration motor is arranged in the vibration type toothbrush, the brush head can swing at a high frequency perpendicular to the direction of the brush holder, and the swing amplitude is small.
At present, a plurality of magnet materials or electromagnets which are electrified are adopted for the vibration type electric toothbrush to generate a magnetic field environment, the reset torsion spring is sleeved on a rotor rotating shaft and is fixed by a screw or a clamping groove, and the problems of low vibration frequency, instability, large power loss and short service life easily occur in the operation process of the motor with the structure.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide an electric toothbrush motor and an electric toothbrush having a high and stable vibration frequency.
The utility model provides an electric toothbrush motor, includes supporting component, stator module, rotor subassembly and reset assembly, the supporting component includes the shell and is connected the first end cover of shell one end, place in the stator module the shell, the rotor subassembly includes pivot, rotor core and magnet, the pivot is worn to establish the shell with first end cover, the rotor core cover is located the pivot, magnet with rotor core magnetism is connected, reset assembly is including rotating seat, elastic component and fastener, rotate seat fixed connection the pivot, the one end of elastic component is inserted and is located rotate the seat, the other end is connected the first end cover, the fastener is used for fixing the first end cover with the elastic component.
In one embodiment, one side of the rotating seat is provided with a positioning part, and the side wall of the first end cover is provided with a limiting groove for accommodating the positioning part.
In one embodiment, the support assembly further includes a first bearing, a second end cover and a second bearing, the first bearing is mounted on the first end cover, the second end cover is connected to one end of the housing far away from the first end cover, the second bearing is mounted on the second end cover, and two ends of the rotating shaft respectively penetrate through the first bearing and the second bearing.
In one embodiment, the support assembly further includes a first elastic piece and a second elastic piece, the first elastic piece is disposed between the first bearing and the first end cap, the second elastic piece is disposed between the second bearing and the second end cap, and the rotating shaft penetrates through the first elastic piece and the second elastic piece.
In one embodiment, the supporting assembly further includes a first limiting member, a second limiting member and a third limiting member, the rotating shaft penetrates through the first limiting member, the second limiting member and the third limiting member, the first limiting member and the second limiting member are respectively disposed at two sides of the first bearing, the first limiting member is used for fixing the rotating shaft and the first bearing, the second limiting member is used for fixing the rotating shaft and the first end cap, the first elastic sheet and the first bearing are limited between the first limiting member and the second limiting member, and the third limiting member is used for fixing the rotating shaft and the second bearing.
In one embodiment, the stator assembly comprises a first bobbin, a second bobbin, a stator core and a plurality of coils, the first bobbin and the second bobbin are respectively sleeved at two ends of the stator core, the first bobbin is inserted in the first end cover, and the magnet is arranged in the stator core; one end of each coil is inserted into the first wire frame, and the other end of each coil is inserted into the second wire frame.
In one embodiment, the portable terminal device further comprises a control assembly, wherein the control assembly comprises a support, a circuit board, a sensor and a plurality of terminal pins, two sides of the support are respectively connected with the second wire frame and the circuit board, the sensor is in signal connection with the circuit board, each terminal pin penetrates through the support and the circuit board, and the terminal pins are electrically connected with the circuit board.
In one embodiment, the second wire frame includes a protruding portion and a fastening portion, the protruding portion is used for fixing an end face of the bracket, the fastening portion is used for fixing a side wall face of the bracket, and the bracket is provided with a protruding portion in a protruding manner to mount the circuit board.
In one embodiment, the elastic member is a spiral torsion spring, and the sensor is a linear hall sensor.
An electric toothbrush comprises the electric toothbrush motor.
Compared with the prior art, the utility model has the following beneficial effects:
according to the electric toothbrush motor, one end of the elastic piece is inserted into the rotating seat, the other end of the elastic piece is connected with the first end cover, the first end cover and the elastic piece are fixed through the fastening piece, the elastic piece is a spiral torsion spring, the fatigue resistance of the elastic piece is improved, the high-frequency vibration of the motor is ensured, and the problem that the service life of the elastic piece is short due to high-frequency torsion is effectively solved.
Drawings
FIG. 1 is a schematic view illustrating an assembly structure of a motor for an electric toothbrush according to a preferred embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an exploded view of the electric toothbrush motor shown in FIG. 1, wherein the fasteners are not shown;
FIG. 4 is an enlarged view of the second bobbin and the bracket of FIG. 3;
fig. 5 is a schematic structural view of the rotor assembly and the sensor in fig. 1.
Reference is made to the accompanying drawings in which:
an electric toothbrush motor 100;
the support assembly 10, the housing 11, the through hole 110, the connecting portion 111, the first end cap 12, the first housing portion 121, the first guide portion 122, the first bearing portion 123, the first limiting portion 124, the fixing portion 125, the limiting groove 126, the second end cap 13, the second housing portion 131, the second guide portion 132, the second bearing portion 133, the first bearing 14, the second bearing 15, the first elastic piece 16, the second elastic piece 17, the first limiting member 18, the third limiting member 19, the stator assembly 20, the first bobbin 21, the second bobbin 22, the protrusion 221, the snap-fit portion 222, the stator core 23, the coil 24, the rotor assembly 30, the rotating shaft 31, the snap-lock groove 310, the rotor core 32, and the magnet 33;
the reset assembly 40, the rotary seat 41, the positioning part 411, the elastic part 42, the fastening part 43, the control assembly 50, the bracket 51, the hole groove 510, the mounting groove 511, the clamping groove 512, the wire passing groove 513, the boss part 514, the circuit board 52, the sensor 53 and the terminal pin 54.
Detailed Description
In order that the utility model may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When the number of an element is referred to as "a plurality," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 5, an electric toothbrush motor 100 according to a preferred embodiment of the present invention includes a support assembly 10, a stator assembly 20, a rotor assembly 30 and a reset assembly 40, wherein the support assembly 10 includes a housing 11 and a first end cap 12 connected to one end of the housing 11, the stator assembly 20 is disposed in the housing 11, the rotor assembly 30 includes a rotating shaft 31, a rotor core 32 and a magnet 33, and the reset assembly 40 includes a rotating base 41, an elastic member 42 and a fastening member 43. According to the electric toothbrush motor 100, one end of the elastic piece 42 is inserted into the rotating base 41, the other end of the elastic piece is connected with the first end cover 12, the first end cover 12 and the elastic piece 42 are fixed through the fastening piece 43, the elastic piece 42 adopts a spiral torsion spring, the fatigue resistance of the elastic piece 42 is improved, the high-frequency vibration of the motor is ensured, and the problem that the service life of the elastic piece 42 is short due to high-frequency torsion is effectively solved.
As shown in fig. 1 to 3, in the present embodiment, the supporting assembly 10 includes a housing 11, a first end cap 12 and a second end cap 13, where the first end cap 12 and the second end cap 13 are respectively connected to two ends of the housing 11, optionally, two ends of the housing 11 are both provided with through holes 110, and two ends of the housing 11 are both provided with connecting portions 111; further, the first end cap 12 includes a first housing portion 121, a first guiding portion 122, a first bearing portion 123, a first limiting portion 124 and a fixing portion 125, a limiting groove 126 is formed in a side wall of the first housing portion 121, the first guiding portion 122 is connected to a side wall surface of the first housing portion 121, the first bearing portion 123 and the first limiting portion 124 are respectively connected to two ends of the first housing portion 121, the fixing portion 125 is connected to one side of the first bearing portion 123, the second end cap 13 includes a second housing portion 131, a second guiding portion 132 and a second bearing portion 133, the second guiding portion 132 is connected to a side wall surface of the second housing portion 131, the second bearing portion 133 is embedded in the second housing portion 131, the first guiding portion 122 and the second guiding portion 132 respectively correspond to the two through holes 110, and the housing 11 and the first end cap 12, the housing 11 and the second end cap 13 are fixed by bending the connecting portion 111.
As shown in fig. 2, the support assembly 10 further includes a first bearing 14 and a second bearing 15, the first bearing 14 is mounted on the first bearing portion 123 of the first end cap 12, and the second bearing 15 is mounted on the second bearing portion 133 of the second end cap 13; in an embodiment, the supporting assembly 10 further includes a first elastic sheet 16 and a second elastic sheet 17, the first elastic sheet 16 is disposed between the first bearing 14 and the first bearing portion 123 of the first end cap 12, the second elastic sheet 17 is disposed between the second bearing 15 and the second bearing portion 133 of the second end cap 13, a pretightening force is applied to the outer ring of the first bearing 14 through the first elastic sheet 16, and the pretightening force is applied to the outer ring of the second bearing 15 through the second elastic sheet 17, so that a bearing play is reduced, and noise of balls inside the bearing under high-frequency vibration is effectively reduced. In an embodiment, the supporting assembly 10 further includes a first limiting member 18, a second limiting member (not shown), and a third limiting member 19, the rotating shaft 31 passes through the first limiting member 18, the second limiting member, and the third limiting member 19, the first limiting member 18 is used to fix the rotating shaft 31 and the first bearing 14, the second limiting member is used to fix the rotating shaft 31 and the first end cap 12, and the third limiting member 19 is used to fix the rotating shaft 31 and the second bearing 15. Optionally, the first limiting member 18 and the second limiting member are respectively disposed on two sides of the first bearing 14, so that axial impact force and drawing force can be effectively resisted, and reliability is enhanced with large amplitude; further, the first limiting member 18 and the second limiting member are both snap springs, and the third limiting member 19 is a limiting ring.
As shown in fig. 2 to 4, the stator assembly 20 is disposed in the housing 11, the stator assembly 20 includes a first bobbin 21, a second bobbin 22, a stator core 23 and a plurality of coils 24, the first bobbin 21 and the second bobbin 22 are respectively sleeved at two ends of the stator core 23, the first bobbin 21 is inserted into the first end cap 12, and optionally, the first bobbin 21 has a plurality of grooves for accommodating the first limiting portion 124; the second bobbin 22 includes a protrusion 221 and a locking portion 222. One end of each coil 24 is inserted into the first bobbin 21, and the other end is inserted into the second bobbin 22.
Referring to fig. 2, fig. 3 and fig. 5 again, the rotor assembly 30 includes a rotating shaft 31, a rotor core 32 and a magnet 33, the rotating shaft 31 penetrates through the housing 11 and the first end cap 12, the rotor core 32 is sleeved on the rotating shaft 31, the magnet 33 is magnetically connected to the rotor core 32, optionally, two ends of the rotating shaft 31 respectively penetrate through the first bearing 14 and the second bearing 15, and the rotating shaft 31 penetrates through the first elastic piece 16 and the second elastic piece 17; magnet 33 is built in stator core 23; further, the rotating shaft 31 is provided with two clamp spring slots 310 for respectively accommodating the first limiting member 18 and the second limiting member, the two clamp spring slots 310 respectively limit the first limiting member 18 and the second limiting member, the first end cap 12, the first elastic sheet 16 and the first bearing 14 are limited between the first limiting member 18 and the second limiting member, and the first limiting member 18 and the second limiting member limit axial displacement of the first end cap 12, the first elastic sheet 16 and the first bearing 14; under the action of the first limiting member 18 and the second limiting member, the length of the rotating shaft 31 extending out of the first end cap 12 depends on the dimensional tolerance of the two clamp spring slots 310 of the rotating shaft 31, the extending length of the rotating shaft 31 is accurately controlled, and the problem that the extending size of the rotating shaft 31 is unstable in the existing product structure is solved.
As shown in fig. 2 and 3, the reset assembly 40 includes a rotating base 41, an elastic member 42 and a fastening member 43, the rotating base 41 is fixedly connected to the rotating shaft 31, one end of the elastic member 42 is inserted into the rotating base 41, the other end is connected to the first end cap 12, and the fastening member 43 is used for fixing the first end cap 12 and the elastic member 42; optionally, one side of the rotating seat 41 is provided with a positioning portion 411, the limiting groove 126 of the first end cover 12 is used for accommodating the positioning portion 411 to limit a radial reciprocating swing path of the rotating seat 41 taking the axis as a central axis, when the rotating shaft 31 stops working, the positioning portion 411 is located in the middle of the limiting groove 126, the fastening member 43 is matched with the fixing portion 125 to fix the elastic member 42, further, the elastic member 42 is a spiral torsion spring, the fatigue strength of high-frequency torsion resistance is improved, and the dependence degree of the motor performance on the torsion spring material is reduced; under the condition of certain moment of inertia of the toothbrush head, the swing amplitude of the motor depends on the elastic modulus of the torsion spring; the elastic modulus can be changed under the influence of materials, heat treatment process and the like, so that the inherent frequency of the structure is changed, the frequency of a motor driving signal cannot be matched, the amplitude is seriously attenuated, compared with a torsion bar type torsion spring adopted by the existing product, the length of the material of the spiral type torsion spring is increased by multiple times, the stress is relatively dispersed, and the problem of short service life of the torsion spring caused by high-frequency torsion is effectively solved; the fasteners 43 are screws.
As shown in fig. 2 to 5, the electric toothbrush motor 100 further includes a control assembly 50, the control assembly 50 includes a bracket 51, a circuit board 52, a sensor 53 and a plurality of terminal pins 54, two sides of the bracket 51 are respectively connected to the second wire frame 22 and the circuit board 52, the sensor 53 is in signal connection with the circuit board 52, the sensor 53 is connected with the magnet 33 through electromagnetic induction, each terminal pin 54 penetrates through the bracket 51 and the circuit board 52, and the terminal pins 54 are electrically connected with the circuit board 52; optionally, the end surface of the bracket 51 is provided with a hole 510 corresponding to the protrusion 221 and a mounting groove 511 corresponding to the sensor 53, the side wall of the bracket 51 is provided with a slot 512 corresponding to the locking portion 222, the protrusion 221 is used for fixing the end surface of the bracket 51, and the locking portion 222 is used for fixing the side wall surface of the bracket 51 to firmly mount the bracket 51 and the second bobbin 22; the bracket 51 further has a wire passing groove 513 for allowing an enameled wire to pass through and fix the enameled wire, so that the enameled wire is insulated from the housing 11, and the bracket 51 further has a protruding boss portion 514 for mounting the circuit board 52 and positioning the circuit board 52 axially and radially. Further, as shown in fig. 5, two sensors 53 are provided, the sensor 53 is a linear hall sensor, the magnet 33 slides on the surface of the sensor 53 along with the rotation of the rotating shaft 31, the sliding of the magnet 33 changes the magnetic field between the magnet 33 and the sensor 53, the sensor 53 converts the changed magnetic field into the change of the output voltage and transmits the electrical signal to the circuit board 52, and the signal output is stable and reliable. One end of the enameled wire is connected with the stator assembly 20, the other end of the enameled wire is wound on the terminal pin 54 through the arranged wire passing groove 513, the enameled wire and the terminal pin 54 form a passage after being soldered, and the terminal pin 54 is welded with the circuit board 52; the circuit board 52 transmits the hall signal and power through a flexible circuit board or lead. Therefore, the part of the enameled wire which is not scattered can be ensured, and the reliability and the safety of the product are improved; second, the circuit board 52 can be integrated with the stator assembly, which provides a significant improvement in manufacturing efficiency.
The electric toothbrush motor 100 is a three-phase brushless motor, and the linear Hall output signals are used for calculating the rotation angle of the rotor, so that the space utilization rate is high, the output power of the motor is improved, and meanwhile, the dependence of the swing amplitude of the motor on the material of the elastic part 42 is reduced; the full closed loop control is realized, the rotating shaft 31 increases along with the load, and the torque of the rotating shaft is not attenuated.
According to the electric toothbrush motor 100, one end of the elastic piece 42 is inserted into the rotating base 41, the other end of the elastic piece is connected with the first end cover 12, the first end cover 12 and the elastic piece 42 are fixed through the fastening piece 43, the elastic piece 42 adopts a spiral torsion spring, the fatigue resistance of the elastic piece 42 is improved, the high-frequency vibration of the motor is ensured, and the problem that the service life of the elastic piece 42 is short due to high-frequency torsion is effectively solved.
In an alternative embodiment, the electric toothbrush motor 100 is used for an electric toothbrush based on the above embodiments.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, many variations and modifications can be made without departing from the first concept of the utility model, which falls within the scope of the utility model. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides an electric toothbrush motor, its characterized in that, includes supporting component, stator module, rotor subassembly and reset assembly, the supporting component includes the shell and is connected the first end cover of shell one end, place in the stator module the shell, the rotor subassembly includes pivot, rotor core and magnet, the pivot is worn to establish the shell with first end cover, the rotor core cover is located the pivot, magnet with rotor core magnetism is connected, reset assembly is including rotating seat, elastic component and fastener, rotate seat fixed connection the pivot, the one end of elastic component is inserted and is located rotate the seat, the other end is connected the first end cover, the fastener is used for fixing first end cover with the elastic component.
2. The electric toothbrush motor of claim 1, wherein a positioning portion is provided at one side of the rotary base, and a side wall of the first cap is provided with a stopper groove to receive the positioning portion.
3. The electric toothbrush motor of claim 1, wherein the support assembly further comprises a first bearing, a second end cap and a second bearing, the first bearing is mounted on the first end cap, the second end cap is connected to an end of the housing away from the first end cap, the second bearing is mounted on the second end cap, and two ends of the rotating shaft respectively penetrate through the first bearing and the second bearing.
4. The electric toothbrush motor of claim 3, wherein the support assembly further comprises a first resilient tab and a second resilient tab, the first resilient tab is disposed between the first bearing and the first end cap, the second resilient tab is disposed between the second bearing and the second end cap, and the shaft passes through the first resilient tab and the second resilient tab.
5. The electric toothbrush motor of claim 4, wherein the supporting assembly further comprises a first limiting member, a second limiting member and a third limiting member, the rotating shaft penetrates through the first limiting member, the second limiting member and the third limiting member, the first limiting member and the second limiting member are respectively disposed at two sides of the first bearing, the first limiting member is used for fixing the rotating shaft and the first bearing, the second limiting member is used for fixing the rotating shaft and the first end cap, the first elastic sheet and the first bearing are limited between the first limiting member and the second limiting member, and the third limiting member is used for fixing the rotating shaft and the second bearing.
6. The electric toothbrush motor of claim 1, wherein the stator assembly comprises a first bobbin, a second bobbin, a stator core and a plurality of coils, the first bobbin and the second bobbin are respectively sleeved on two ends of the stator core, the first bobbin is inserted into the first end cap, and the magnet is arranged in the stator core; one end of each coil is inserted into the first wire frame, and the other end of each coil is inserted into the second wire frame.
7. The electric toothbrush motor of claim 6, further comprising a control assembly, wherein the control assembly comprises a bracket, a circuit board, a sensor and a plurality of terminal pins, wherein two sides of the bracket are respectively connected to the second bobbin and the circuit board, the sensor is in signal connection with the circuit board, each terminal pin penetrates through the bracket and the circuit board, and the terminal pins are electrically connected with the circuit board.
8. The electric toothbrush motor of claim 7, wherein the second wire rack comprises a protrusion and a snap-fit portion, the protrusion is used for fixing the end surface of the bracket, the snap-fit portion is used for fixing the side wall surface of the bracket, and the bracket is provided with a boss portion for mounting the circuit board.
9. The electric toothbrush motor of claim 7, wherein the elastic member is a helical torsion spring and the sensor is a linear hall sensor.
10. An electric toothbrush comprising an electric toothbrush motor according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121769972.9U CN215498605U (en) | 2021-07-28 | 2021-07-28 | Electric toothbrush motor and electric toothbrush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121769972.9U CN215498605U (en) | 2021-07-28 | 2021-07-28 | Electric toothbrush motor and electric toothbrush |
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| Publication Number | Publication Date |
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| CN215498605U true CN215498605U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121769972.9U Active CN215498605U (en) | 2021-07-28 | 2021-07-28 | Electric toothbrush motor and electric toothbrush |
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| CN (1) | CN215498605U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117200505A (en) * | 2022-05-31 | 2023-12-08 | 深圳市速腾聚创科技有限公司 | Vibrating mirror motor |
| WO2023245770A1 (en) * | 2022-06-21 | 2023-12-28 | 东莞市本末科技有限公司 | Power accumulation device and electric motor |
| EP4568068A1 (en) | 2023-12-05 | 2025-06-11 | Shenzhen Shuye Technology Co., Ltd. | Rotor holder, rotor assembly, motor, and electric toothbrush |
-
2021
- 2021-07-28 CN CN202121769972.9U patent/CN215498605U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117200505A (en) * | 2022-05-31 | 2023-12-08 | 深圳市速腾聚创科技有限公司 | Vibrating mirror motor |
| CN117200505B (en) * | 2022-05-31 | 2024-11-05 | 深圳市速腾聚创科技有限公司 | Galvanometer motor |
| WO2023245770A1 (en) * | 2022-06-21 | 2023-12-28 | 东莞市本末科技有限公司 | Power accumulation device and electric motor |
| EP4568068A1 (en) | 2023-12-05 | 2025-06-11 | Shenzhen Shuye Technology Co., Ltd. | Rotor holder, rotor assembly, motor, and electric toothbrush |
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Address after: 523000 No. 18, Jinhe Xinguang Road, Zhangmutou town, Dongguan City, Guangdong Province Patentee after: Guangdong Roman Intelligent Technology Co.,Ltd. Country or region after: China Address before: 523000 No. 18, Jinhe Xinguang Road, Zhangmutou town, Dongguan City, Guangdong Province Patentee before: GUANGDONG ROMAN TECHNOLOGY Co.,Ltd. Country or region before: China |