CN211557062U

CN211557062U - Magnetic suspension high-stability toothbrush motor

Info

Publication number: CN211557062U
Application number: CN201921901124.1U
Authority: CN
Inventors: 周前发; 蔺建刚; 张雷刚
Original assignee: Shenzhen Hongzhifa Machinery & Electronics Co ltd
Current assignee: Shenzhen Hongzhifa Electromechanical Co ltd
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-09-22
Anticipated expiration: 2029-11-06

Abstract

The utility model provides a magnetic suspension high-stability toothbrush motor, which comprises a motor shell, a shell bearing, a rear cover bearing, a motor shaft, a stator component and a rotor component, wherein the motor shell is in a hollow tubular shape and comprises a first opening and a second opening which are positioned at two ends and used for component assembly; the shell bearing is fixedly arranged in the first opening; the rear cover is connected to the second opening in a limiting manner and comprises a bearing seat; the rear cover bearing is fixedly arranged in the bearing seat; the motor shaft is connected in the inner hole of the shell bearing and the inner hole of the rear cover bearing in a limiting way and is superposed with the central axis of the motor shell; the stator component is fixedly arranged in the motor shell and comprises a stator core, a coil holder and a coil wound on the periphery of the coil holder; the rotor assembly is connected to the motor shaft and comprises a vibrator iron core and a magnet; the utility model discloses an axial length of oscillator core who uses is longer than stator core axial length, and the magnetic flux increases, and temperature rise speed is slow, and the electric current that bears is great, and the magnetic leakage is less, and the electrical apparatus performance is more stable.

Description

Magnetic suspension high-stability toothbrush motor

Technical Field

The utility model relates to a motor field, in particular to magnetic suspension high stable toothbrush motor.

Background

The motor is an electromagnetic device for converting electric energy into mechanical energy according to the law of electromagnetic induction, and in order to meet the requirements of various industries, motors in the market are various. Wherein the motor generally comprises a stator assembly and a rotor assembly, the working stability of the motor in the prior art is often related to the size and matching relationship of the stator assembly and the rotor assembly, and the mismatching of the stator assembly and the rotor assembly may cause the reduction of the working stability of the motor.

Therefore, it is desirable to provide a magnetic suspension highly stable toothbrush motor to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a magnetic suspension high stability toothbrush motor, it is higher than stator core through the oscillator core axial length who uses to there is more serious performance decline that generates heat of magnetic leakage in the motor of solving among the prior art more, and the not reasonable problem inadequately of distribution of each part.

In order to solve the technical problem, the utility model adopts the technical scheme that:

a magnetic levitation high stability toothbrush motor, comprising:

the motor shell is in a hollow cylinder shape and comprises a first opening and a second opening which are positioned at two ends and used for assembling components;

a shell bearing fixedly disposed within the first opening;

the rear cover is connected to the second opening in a limiting manner and comprises a bearing seat;

the rear cover bearing is fixedly arranged in the bearing seat;

the motor shaft is connected in the shell bearing inner hole and the rear cover bearing inner hole in a limiting manner and is superposed with the central axis of the motor shell;

the stator assembly is fixedly arranged in the motor shell and comprises a stator core, a coil holder and a coil wound on the periphery of the coil holder;

the rotor assembly is connected to the motor shaft and comprises a vibrator iron core and a magnet;

and the axial length of the oscillator iron core is 1-2mm longer than that of the stator iron core.

In the magnetic suspension high stability toothbrush motor, the motor shell includes casing and first arch, the second opening sets up on the casing, first arch is located second opening one end center is kept away from to the casing, first opening sets up on first arch.

Magnetic suspension high stable toothbrush motor in, the casing includes two rectangle inner walls and two circular arc inner walls, two rectangle inner walls are parallel, two rectangle inner walls of two circular arc inner wall connections.

Magnetic suspension high stable toothbrush motor in, the oscillator iron core includes sleeve, second arch and third arch, sleeve fixed connection be in on the motor shaft, first arch with enclose into four first recesses between the second arch, first recess is used for spacing connection magnet, when magnet is fixed on the oscillator iron core, the rotor subassembly is cylindricly.

Magnetic suspension high stable toothbrush motor in, stator core includes fixed part, connecting portion and extension, the spacing connection of fixed part is in the motor shell inner wall, fixed part and extension are connected to connecting portion, and connecting portion are the cuboid shape, and connecting portion arrive two rectangle inner wall distances of motor shell equal and parallel with the rectangle inner wall, the extension is the falcate, connecting portion are connected at extension one side center, the extension parcel the rotor subassembly, and with it is gapped between the rotor subassembly.

Magnetic suspension high stable toothbrush motor in, the line frame includes joint portion and the wire casing that is located the joint portion outside, joint portion joint is in on the connecting portion, the spacing connection of wire casing is in between fixed part and the extension.

In the magnetic suspension high stable toothbrush motor, the bearing frame outer wall is spacing to be connected in the second opening, including first outer wall and second outer wall, first outer wall with motor shell rectangle inner wall connection, the second outer wall with the circular arc inner wall connection of motor shell.

Magnetic suspension high stable toothbrush motor in, the back is covered and is provided with the through-hole, the through-hole set up in the bearing frame hole with the centre of second outer wall, be used for the coil prolongs external circuit.

Among the high stable toothbrush motor of magnetic suspension, the back lid is including connecting the backplate of bearing frame, the backplate includes two rectangle outer walls and two circular arc outer walls, the backplate outer wall with the coincidence of motor shell outer wall.

Magnetic suspension high stable toothbrush motor in, the back panel deviates from on the back cover the motor shell simultaneously is provided with four second recesses, the second recess sets up the both ends of circular arc outer wall, the second recess extends to bearing frame middle part position along the back panel, the second recess be used for with motor shell joint.

The utility model discloses compare in prior art, its beneficial effect is: the utility model discloses a magnetic suspension high stable toothbrush motor, axial length through the oscillator core who uses is longer than stator core axial length, and the magnetic flux increases, and temperature rise speed is slow, and the electric current that bears is great, and the magnetic leakage is less, and the electrical apparatus performance is more stable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below, and the drawings in the following description are only corresponding drawings of some embodiments of the present invention.

Fig. 1 is a schematic structural view of the magnetic suspension high-stability toothbrush motor of the present invention.

Fig. 2 is a schematic cross-sectional view of the internal structure of the magnetic suspension highly stable toothbrush motor of the present invention.

Fig. 3 is an exploded view of the magnetic suspension highly stable toothbrush motor of the present invention.

Fig. 4 is a schematic view of the magnetic flux variation among the vibrator core, the magnet and the stator core of the magnetic suspension high stability toothbrush motor of the present invention.

Fig. 5 is a schematic structural view of a motor housing in the magnetic suspension high stability toothbrush motor of the present invention.

Fig. 6 is a top view of the stator core in the magnetic suspension high stability toothbrush motor of the present invention.

Fig. 7 is a schematic structural view of the rear cover of the magnetic suspension high stability toothbrush motor of the present invention.

The motor comprises a motor shaft 1, a motor shell 2, a motor shell 3, a rear cover 4, a rear cover bearing 5, a wire frame 6, a stator core 7, a shell bearing 8, a vibrator core 9, a magnet 21, a first protrusion 22, a first opening 23, a second opening 24, a rectangular inner wall 25, an arc inner wall 31, a bearing seat 32, a through hole 33, a back panel 34, a second groove 51, a clamping part 52, a wire groove 61, a fixing part 62, an extending part 63, a connecting part 81, a second protrusion 82 and a second protrusion.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

After the motor in the prior art is used for too long, the problems of more magnetic flux leakage, serious heat generation and performance reduction often exist.

The present invention provides a preferred embodiment of a magnetic suspension highly stable toothbrush motor capable of solving the above technical problems.

Please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, wherein fig. 1 is the structure schematic diagram of the magnetic suspension highly stable toothbrush motor of the present invention, fig. 2 is the internal structure cross-sectional schematic diagram of the magnetic suspension highly stable toothbrush motor of the present invention, fig. 3 is the decomposition schematic diagram of the magnetic suspension highly stable toothbrush motor of the present invention, fig. 4 is the magnetic flux variation schematic diagram between the vibrator core, the magnet and the stator core of the magnetic suspension highly stable toothbrush motor of the present invention, fig. 5 is the structure schematic diagram of the motor shell of the magnetic suspension highly stable toothbrush motor of the present invention, fig. 6 is the top view of the stator core of the magnetic suspension highly stable toothbrush motor of the present invention, fig. 7 is the structure schematic diagram of the rear cover of the magnetic suspension highly stable toothbrush motor of the present invention.

In the drawings, elements having similar structures are denoted by the same reference numerals.

The terms "first," "second," and the like in the terms of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor should they be construed as limiting in any way.

The utility model provides a preferred embodiment of motor with contact pin interface does: a magnetic suspension high-stability toothbrush motor comprises a motor shell 2, a shell bearing 7, a rear cover 3, a rear cover bearing 4, a motor shaft 1, a stator assembly and a rotor assembly, wherein the motor shell 2 is in a hollow cylinder shape and comprises a first opening 22 and a second opening 23 which are positioned at two ends and used for assembling components; the shell bearing 7 is fixedly arranged in the first opening 22; the rear cover 3 is connected to the second opening 23 in a limiting way and comprises a bearing seat 31; the rear cover bearing 4 is fixedly arranged in the bearing seat 31; the motor shaft 1 is connected in the inner hole of the shell bearing 7 and the inner hole of the rear cover bearing 4 in a limiting way and is superposed with the central axis of the motor shell 2; the stator component is fixedly arranged in the motor shell 2 and comprises a stator core 6, a coil holder 5 and a coil wound around the periphery of the coil holder 5; the rotor assembly is connected to the motor shaft 1 and comprises a vibrator iron core 8 and a magnet 9; wherein, oscillator core 8's axial length is 1-2mm longer than stator core 6 axial length, and stator core 6 goes up the intensive stability of two extension 62 middle magnetic lines of force, and the magnetic line of force at both ends is dispersed loose, and extension oscillator core 8 increases the motor burden for a long time, increases the motor inner space, and the inefficiency, and extension oscillator core 8 less length can reduce the magnetic leakage, increases the magnetic flux, and the electrical apparatus performance is more stable. The utility model discloses a magnetic suspension high stable toothbrush motor, the axial length through the oscillator core 8 that uses is longer than 6 axial length of stator core, and the magnetic flux increases, and temperature rise speed is slow, and the electric current that bears is great, and the magnetic leakage is less, and the electrical apparatus performance is more stable.

The motor housing 2 includes a housing and a first protrusion 21, the second opening 23 is disposed on the housing, the first protrusion 21 is located at the center of one end of the housing far away from the second opening 23, and the first opening 22 is disposed on the first protrusion 21. The casing includes two rectangle inner walls 24 and two circular arc inner walls 25, and two rectangle inner walls 24 are parallel, and two rectangle inner walls 24 are connected to two circular arc inner walls 25, and motor shell 2 is flat box-like, conveniently fixes the motor on the peripheral hardware.

The oscillator iron core 8 comprises a sleeve, a second protrusion 81 and a third protrusion 82, the sleeve is fixedly connected to the motor shaft 1, four first grooves are formed between the second protrusion 81 and the third protrusion 82 in a surrounding mode, the first grooves are used for limiting the connection magnet 9, when the magnet 9 is fixed to the oscillator iron core 8, the rotor assembly is cylindrical, the rotor assembly rotates, and the magnet 9 is not prone to falling off.

Stator core 6 includes fixed part 61, connecting portion 63 and extension 62, the spacing connection of fixed part 61 is in motor shell 2 inner wall, connecting portion 63 connects fixed part 61 and extension 62, connecting portion 63 is the cuboid shape, connecting portion 63 equals and is parallel with rectangle inner wall 24 to two rectangle inner walls 24 distance of motor shell 2, extension 62 is the falcate, extension 62 extension length is enough long, the magnetic flux has been increased, connecting portion 63 is connected at extension 62 one side center, extension 62 parcel rotor subassembly to with gapped between the rotor subassembly. The wire frame 5 comprises a clamping portion 51 and a wire casing 52 located on the outer side of the clamping portion 51, the clamping portion 51 is clamped on the connecting portion 63, and the wire casing 52 is in limited connection between the fixing portion 61 and the extending portion 62.

Bearing frame 31 outer wall is spacing connection in second opening 23, including first outer wall and second outer wall, and first outer wall is connected with motor housing 2 rectangle inner wall 24, and the second outer wall is connected with motor housing 2's circular arc inner wall 25. The rear cover 3 is provided with a through hole 32, the through hole 32 is arranged between the inner hole of the bearing seat 31 and the second outer wall and is used for extending the coil out of an external circuit, the through hole 32 is arranged on the rear cover 3, and the rear cover 3 is made of insulating materials, so that the circuit safety is effectively guaranteed; back lid 3 includes connecting bearing frame 31's backplate 33, backplate 33 includes two rectangle outer walls and two circular arc outer walls, backplate 33 outer wall and the coincidence of 2 outer walls of motor shell, backplate 33 deviates from 2 one sides of motor shell and is provided with four second recesses 34 on the back lid 3, second recess 34 sets up the both ends at the circular arc outer wall, second recess 34 extends to bearing frame 31 middle part position along backplate 33, second recess 34 is used for with 2 joints of motor shell, use recess and 2 joints of motor shell, need not use the screw connection, the motor vibration process is also difficult for droing.

The utility model discloses a theory of operation: the vibrator iron core 8 is provided with four magnets 9, the vibrator iron core 8 is fixed on the motor shaft 1, the second opening 23 of the motor shell 2 is provided with the shell bearing 7, the motor shaft 1 penetrates through the second opening 23 of the motor shell 2 and an inner hole of the shell bearing 7, the two ends of the stator iron core 6 are inserted with the wire frames 5, the clamping parts 51 of the wire frames 5 are connected with the connecting parts 63 of the stator iron core 6, the wire grooves 52 of the wire frames 5 are wound with coils, the rotor assembly is clamped in the motor shell 2, the rear cover bearing 4 is fixed in the bearing seat 31 of the rear cover 3, the wires extending out of the coils penetrate through the through holes 32 in the rear cover 3 to cover the rear cover 3 to the motor shell 2, the motor shell 2 is extruded to bend towards the second groove 34 at the position corresponding to the second groove 34 on the motor shell 2, and the motor shell 2 is clamped with the four second grooves 34 of the rear cover 3.

This completes the assembly process of the magnetic levitation high stability toothbrush motor of the preferred embodiment.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.

Claims

1. A magnetic levitation high stability toothbrush motor, comprising:

a shell bearing fixedly disposed within the first opening;

the rear cover bearing is fixedly arranged in the bearing seat;

2. The magnetic levitation high stability toothbrush motor as claimed in claim 1, wherein the motor housing comprises a housing and a first protrusion, the second opening is provided on the housing, the first protrusion is located at a center of an end of the housing away from the second opening, and the first opening is provided on the first protrusion.

3. The magnetic levitation high stability toothbrush motor of claim 2, wherein the housing comprises two rectangular inner walls parallel to each other and two circular arc inner walls connecting the two rectangular inner walls.

4. The magnetic suspension high-stability toothbrush motor according to claim 1, wherein the oscillator core comprises a sleeve, a second protrusion and a third protrusion, the sleeve is fixedly connected to the motor shaft, four first grooves are enclosed between the second protrusion and the third protrusion, the first grooves are used for limiting and connecting the magnet, and when the magnet is fixed on the oscillator core, the rotor assembly is cylindrical.

5. The magnetic suspension high-stability toothbrush motor as claimed in claim 1, wherein the stator core comprises a fixing portion, a connecting portion and an extending portion, the fixing portion is connected in the inner wall of the motor casing in a limiting manner, the connecting portion connects the fixing portion and the extending portion, the connecting portion is in a rectangular parallelepiped shape, the connecting portion is equidistant from the two rectangular inner walls of the motor casing and parallel to the rectangular inner walls, the extending portion is in a meniscus shape, the connecting portion is connected to the center of one side of the extending portion, and the extending portion wraps the rotor assembly and has a gap with the rotor assembly.

6. The magnetic suspension high-stability toothbrush motor as claimed in claim 5, wherein the wire frame comprises a clamping portion and a wire slot located outside the clamping portion, the clamping portion is clamped on the connecting portion, and the wire slot is connected between the fixing portion and the extending portion in a limiting manner.

7. The magnetic suspension high-stability toothbrush motor as claimed in claim 1, wherein the bearing seat outer wall is connected in the second opening in a limiting manner and comprises a first outer wall and a second outer wall, the first outer wall is connected with the rectangular inner wall of the motor shell, and the second outer wall is connected with the circular arc inner wall of the motor shell.

8. The magnetic levitation high stability toothbrush motor as claimed in claim 7, wherein the rear cover is provided with a through hole disposed between the inner hole of the bearing housing and the second outer wall for the coil to extend out of the external circuit.

9. The magnetic suspension high-stability toothbrush motor as claimed in claim 1, wherein the back cover comprises a back plate connected to the bearing seat, the back plate comprises two rectangular outer walls and two circular arc outer walls, and the outer wall of the back plate coincides with the outer wall of the motor housing.

10. The magnetic suspension high-stability toothbrush motor as claimed in claim 9, wherein four second grooves are disposed on a surface of the back plate facing away from the motor housing, the second grooves are disposed at two ends of the arc outer wall, the second grooves extend to a middle position of the bearing seat along the back plate, and the second grooves are used for being clamped with the motor housing.