CN218633497U

CN218633497U - Electric toothbrush motor

Info

Publication number: CN218633497U
Application number: CN202223035576.0U
Authority: CN
Inventors: 陈道刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-03-14
Anticipated expiration: 2032-11-14

Abstract

The utility model discloses an electric toothbrush motor, which comprises a shell, a stator component and a rotor component, wherein the stator component and the rotor component are arranged in the shell; stator module includes that coil former and symmetry set up two coils at the coil former inboard, the rotor subassembly includes consecutive rotor shaft, plastic magnet frame, return plate and plastic fixed block, the plastic magnet frame sets up between two coils, install the magnetite in the plastic magnet frame, and a magnetic conductive plate is installed respectively to the position that corresponds the magnetite both sides on the plastic magnet frame. The utility model discloses can not only material saving cost, can shorten equipment man-hour by a wide margin moreover, can bring good economic benefits for the enterprise.

Description

Electric toothbrush motor

Technical Field

The utility model relates to an electric toothbrush technical field especially relates to an electric toothbrush motor.

Background

The toothbrush is a brush for cleaning teeth, and belongs to the living necessities of people. With the development of science and technology, electric toothbrushes have emerged as new forms of toothbrushes. The investigation shows that the electric toothbrush is more scientific and effective compared with the common toothbrush, can remove dental plaque, reduce oral diseases such as gingivitis, periodontal disease and gingival bleeding and the like, and is increasingly popular with people.

The current electric toothbrush mainly uses the vibration principle. The electric toothbrush can lead the brush head to generate high-frequency vibration through the quick back-and-forth rotation of the electric machine core, instantly decompose the toothpaste into fine foam and deeply clean teeth gaps; meanwhile, the vibration of the brush hair can promote the blood circulation in the oral cavity and has the massage effect on the gum tissue. At present, this kind of toothbrush motor includes the casing usually and sets up rotor subassembly and stator module in the casing, the rotor subassembly is including setting up the rotor shaft in stator module, the rotor shaft includes the rotor shaft, the magnetite frame, the magnetite, return plate and fixed block, wherein, the rotor shaft, the magnetite frame, return plate and fixed block detachably link together in proper order, the quantity of magnetite is four, the four corners of four magnetite device magnetite frames, four magnetite have been used to this structure, not only material cost is high, and need connect each part during the equipment, complex operation, assembly man-hour is longer, be difficult to bring good economic benefits for the enterprise.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric toothbrush motor, the utility model discloses can not only material saving cost, can shorten equipment man-hour by a wide margin moreover, can bring good economic benefits for the enterprise.

In order to achieve the above object, the utility model provides a following technical scheme: an electric toothbrush motor comprises a shell, a stator assembly and a rotor assembly, wherein the stator assembly and the rotor assembly are arranged in the shell; stator module includes that coil former and symmetry set up two coils at the coil former inboard, the rotor subassembly includes consecutive rotor shaft, plastic magnet frame, return plate and plastic fixed block, the plastic magnet frame sets up between two coils, install the magnetite in the plastic magnet frame, and a magnetic conductive plate is installed respectively to the position that corresponds the magnetite both sides on the plastic magnet frame.

Through adopting above-mentioned technical scheme, only need adopt a magnetite to utilize two magnetic conduction pieces to retrain the magnetite, the magnetic conduction piece enables magnetic field effect and transmits well simultaneously, avoids magnetic field decay, compares in the original mode that sets up a magnetite respectively in magnet frame four corners, and this structure has saved material cost, and it is also more convenient to assemble simultaneously, can shorten equipment man-hour, thereby brings good economic benefits for the enterprise.

The utility model discloses further set up to, rotor shaft, plastic magnet frame, return piece and plastic fixed block form the integral type structure through injection moulding.

Through adopting above-mentioned technical scheme, will in advance rotor shaft, plastic magnet frame, return plate and plastic fixed block process formula structure as an organic whole, made things convenient for the installation procedure of follow-up motor greatly, can shorten the equipment man-hour by a wide margin, promote production efficiency.

The utility model discloses further set up to, the both ends of return piece are equipped with respectively and bury a style of calligraphy connecting portion in the plastic magnet frame and bury the polygon connecting portion in the plastic fixed block, and the through-hole has been seted up at polygon connecting portion center.

Through adopting above-mentioned technical scheme, can increase the area of contact of piece and the plastic magnet frame of returning and the area of contact of piece and polygon connecting portion of returning to promote the joint strength of piece and plastic magnet frame of returning and the joint strength of piece and polygon connecting portion of returning.

The utility model discloses further set up to, a mounting groove has been seted up respectively to plastic magnetite frame both sides to the position that plastic magnetite frame lies in between two mounting grooves is equipped with the lumen that is linked together two mounting grooves, the magnetite is installed in the lumen, and two magnetic conduction pieces are installed respectively on two mounting grooves, and magnetic conduction piece and the mounting groove interference fit that corresponds.

By adopting the technical scheme, the connecting structure is simple and reliable, and is beneficial to the assembly in the early stage and the maintenance operation in the later stage.

The utility model discloses further set up to, the both ends of magnetic conduction piece are equipped with a location convex part respectively, be equipped with on the inner wall of mounting groove and correspond location convex part matched with location concave part.

Through adopting above-mentioned technical scheme, can fix a position the magnetic conductive plate, promote the fastness of magnetic conductive plate installation, and then promote the fastness of magnetite installation.

The utility model discloses further set up to, the inboard symmetry of coil former is provided with two response convex parts, the coil is around establishing on the response convex part that corresponds.

By adopting the technical scheme, the winding of the coil can be realized, the structure is simple and reliable, and the assembly and production are convenient.

The utility model discloses further set up to, the casing includes shell and back lid, the back lid is pegged graft in the one end of shell, and the back is covered and is offered the line hole that is used for supplying the wire to pass, and the other end of shell is offered and is used for supplying the shaft hole that the rotor shaft passed.

Through adopting above-mentioned technical scheme, the dismantled and assembled design of casing has made things convenient for the dismouting operation of stator module and rotor subassembly greatly.

The utility model discloses further set up to, be provided with the bearing between shaft hole inner wall and the rotor shaft outer wall, and the outer end in shaft hole is equipped with and is used for supporting the limit flange on the bearing inner race outer end, be equipped with on the rotor shaft and be used for supporting the support step on bearing inner circle inner.

Through adopting above-mentioned technical scheme, can not only realize that the axial of rotor shaft is spacing, can show the frictional resistance that receives when reducing the rotor shaft rotation moreover, when promoting rotor shaft life, can also promote transmission efficiency, reduce the energy consumption.

The utility model discloses further set up to, establish the installation cavity in the back lid, the plastic fixed block is inserted and is established in the installation cavity, and the plastic fixed block with installation cavity interference fit.

Through adopting above-mentioned technical scheme, the dismouting is very convenient, does benefit to the maintenance operation of equipment and later stage in earlier stage.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view B-B of FIG. 2;

fig. 5 is a front view of the present invention;

FIG. 6 is a cross-sectional view C-C of FIG. 5;

FIG. 7 is a schematic view of the overall structure of the rotor shaft, the plastic magnet frame, the return plate and the plastic fixing block;

FIG. 8 is an overall exploded view of the present invention;

fig. 9 is a schematic structural view of the homing sheet of the present invention.

In the figure: 1. a housing; 2. a stator assembly; 3. a rotor assembly; 4. a bobbin; 5. a coil; 6. a rotor shaft; 7. a plastic magnet rack; 8. a return sheet; 9. plastic fixing blocks; 10. a magnet; 11. a magnetic conductive sheet; 12. a straight connecting portion; 13. a polygonal connecting portion; 14. a through hole; 15. mounting grooves; 16. a middle cavity; 17. a positioning projection; 18. a positioning recess; 19. an inductive protrusion; 20. a housing; 21. a rear cover; 22. a wire hole; 23. a shaft hole; 24. a bearing; 25. a limiting flange; 26. supporting a step; 27. and (7) installing a cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): as shown in fig. 1 to 9, an electric toothbrush motor includes a housing 1, a stator assembly 2 and a rotor assembly 3 disposed in the housing 1; stator module 2 includes coil former 4 and two coils 5 of symmetry setting in 4 inboards of coil former, rotor subassembly 3 includes rotor shaft 6, plastic magnetite frame 7, return piece 8 and plastic fixed block 9 that link to each other in proper order, and rotor shaft 6 is the stainless steel axle, and coil former 4 adopts the magnet steel material, plastic magnetite frame 7 sets up between two coils 5, install magnetite 10 in the plastic magnetite frame 7, and a magnetic conduction piece 11 is installed respectively to the position that corresponds magnetite 10 both sides on the plastic magnetite frame 7, and when coil 5 circular telegram, coil former 4 both ends can produce interactive magnetic force, and magnetite 10 on the plastic magnetite frame 7 receives magnetic force to attract, drive rotor shaft 6 swing back and forth, and the restoring force of return piece 8 self can make rotor shaft 6 reset more soon to make rotor shaft 6 reset more soon, and then increased rotor shaft 6's rotational frequency. This structure only needs to adopt a magnetite 10 to utilize two magnetic conduction pieces 11 to retrain magnetite 10, magnetic conduction piece 11 enables magnetic field effect transmission well simultaneously, avoids magnetic field decay, compares in the original mode that sets up a magnetite 10 respectively in 10 four corners on the magnetite, and this structure has saved material cost, and it is also more convenient to assemble simultaneously, can shorten equipment man-hour, thereby brings good economic benefits for the enterprise.

As shown in fig. 7, the rotor shaft 6, the plastic magnet holder 7, the return piece 8 and the plastic fixing block 9 are formed into an integrated structure by injection molding. Will in advance rotor shaft 6, plastic magnetite frame 7, return piece 8 and plastic fixed block 9 process into integral type structure, made things convenient for the installation process of follow-up motor greatly, can shorten the equipment man-hour by a wide margin, promote production efficiency.

As shown in fig. 7, 8 and 9, a linear connecting portion 12 embedded in the plastic magnet frame 7 and a polygonal connecting portion 13 embedded in the plastic fixing block 9 are respectively disposed at two ends of the return sheet 8, and a through hole 14 is opened at the center of the polygonal connecting portion 13. This design can increase the area of contact of piece 8 and plastic magnetite frame 7 and the area of contact of piece 8 and polygon connecting portion 13 that returns to the piece to promote the joint strength of piece 8 and plastic magnetite frame 7 and the joint strength of piece 8 and polygon connecting portion 13 that returns.

As shown in fig. 6, 7 and 8, a mounting groove 15 has been seted up respectively to plastic magnet frame 7 both sides to the position that plastic magnet frame 7 is located between two mounting grooves 15 is equipped with the lumen 16 that is linked together two mounting grooves 15, magnetite 10 is installed in lumen 16, and two magnetic conductive pieces 11 are installed respectively on two mounting grooves 15, and magnetic conductive piece 11 and the mounting groove 15 interference fit that corresponds also can utilize glue to consolidate magnetic conductive piece 11. The connecting structure is simple and reliable, and is beneficial to the assembly in the early stage and the maintenance operation in the later stage.

As shown in fig. 7 and 8, two ends of the magnetic conductive sheet 11 are respectively provided with a positioning convex portion 17, the inner wall of the mounting groove 15 is provided with a positioning concave portion 18 matched with the corresponding positioning convex portion 17, and the positioning convex portion 17 and the positioning concave portion 18 are uniform in semicircular shape. This design can fix a position magnetic conduction piece 11, promotes the fastness of 11 installations of magnetic conduction piece, and then promotes the fastness of magnetite 10 installation.

As shown in fig. 6, two inductive protrusions 19 are symmetrically disposed inside the coil frame 4, and the coil 5 is wound around the corresponding inductive protrusions 19. The design can realize the winding of the coil 5, and the structure is simple and reliable, and the assembly and production are convenient.

As shown in fig. 1, the casing 1 includes a casing 20 and a rear cover 21, the rear cover 21 is inserted into one end of the casing 20, the rear cover and the casing are in interference fit, a wire hole 22 for a wire to pass through, that is, a wire connected to the coil 5, is formed in the rear cover 21, and a shaft hole 23 for the rotor shaft 6 to pass through is formed in the other end of the casing 20. The detachable design of the shell 1 greatly facilitates the dismounting operation of the stator assembly 2 and the rotor assembly 3.

As shown in fig. 3, a bearing 24 is disposed between the inner wall of the shaft hole 23 and the outer wall of the rotor shaft 6, a limit flange 25 for abutting against the outer end of the outer ring of the bearing 24 is disposed at the outer end of the shaft hole 23, and a support step 26 for abutting against the inner end of the inner ring of the bearing 24 is disposed on the rotor shaft 6. The design can not only realize the axial spacing of the rotor shaft 6, but also obviously reduce the frictional resistance received when the rotor shaft 6 rotates, and can also improve the transmission efficiency and reduce the energy consumption when the service life of the rotor shaft 6 is prolonged.

As shown in fig. 3, an installation cavity 27 is formed in the rear cover 21, the plastic fixing block 9 is inserted into the installation cavity 27, the plastic fixing block 9 is in interference fit with the installation cavity 27, a guide expanding opening is formed in the outer end of the installation cavity 27, and a chamfer is formed in one end, far away from the return piece 8, of the plastic fixing block 9. The structure is very convenient to disassemble and assemble, and is beneficial to the assembly in the early stage and the maintenance operation in the later stage.

Claims

1. An electric toothbrush motor comprises a shell (1), a stator assembly (2) and a rotor assembly (3), wherein the stator assembly (2) and the rotor assembly are arranged in the shell (1); the method is characterized in that: stator module (2) include coil former (4) and symmetry set up two coils (5) inboard in coil former (4), rotor subassembly (3) are including rotor shaft (6), plastic magnetite frame (7), return piece (8) and plastic fixed block (9) that link to each other in proper order, plastic magnetite frame (7) set up between two coils (5), install magnetite (10) in plastic magnetite frame (7), and one magnetic conduction piece (11) are installed respectively to the position that corresponds magnetite (10) both sides on plastic magnetite frame (7).

2. An electric toothbrush motor as defined in claim 1, wherein: rotor shaft (6), plastic magnetite frame (7), return sheet (8) and plastic fixed block (9) form the integral type structure through injection moulding.

3. An electric toothbrush motor as claimed in claim 2, wherein: the two ends of the return sheet (8) are respectively provided with a linear connecting part (12) embedded in the plastic magnet frame (7) and a polygonal connecting part (13) embedded in the plastic fixing block (9), and the center of the polygonal connecting part (13) is provided with a through hole (14).

4. An electric toothbrush motor as defined in claim 1, wherein: one mounting groove (15) has been seted up respectively to plastic magnet frame (7) both sides to the position that plastic magnet frame (7) are located between two mounting grooves (15) is equipped with lumen (16) that are linked together two mounting grooves (15), install in lumen (16) magnetite (10), install respectively on two mounting grooves (15) two magnetic conduction pieces (11), and magnetic conduction piece (11) and mounting groove (15) interference fit that correspond.

5. An electric toothbrush motor as defined in claim 4, wherein: the two ends of the magnetic conductive sheet (11) are respectively provided with a positioning convex part (17), and the inner wall of the mounting groove (15) is provided with a positioning concave part (18) matched with the corresponding positioning convex part (17).

6. An electric toothbrush motor as defined in claim 1, wherein: two induction convex parts (19) are symmetrically arranged on the inner side of the coil rack (4), and the coil (5) is wound on the corresponding induction convex parts (19).

7. An electric toothbrush motor as defined in claim 1, wherein: the shell (1) comprises a shell (20) and a rear cover (21), the rear cover (21) is inserted into one end of the shell (20), a wire hole (22) for a wire to pass through is formed in the rear cover (21), and a shaft hole (23) for the rotor shaft (6) to pass through is formed in the other end of the shell (20).

8. An electric toothbrush motor as defined in claim 7, wherein: be provided with bearing (24) between shaft hole (23) inner wall and rotor shaft (6) outer wall, and the outer end in shaft hole (23) is equipped with and is used for propping spacing flange (25) on bearing (24) outer lane outer end, be equipped with on rotor shaft (6) and be used for propping support step (26) on bearing (24) inner circle is inner.

9. An electric toothbrush motor as defined in claim 7, wherein: an installation cavity (27) is formed in the rear cover (21), the plastic fixing block (9) is inserted in the installation cavity (27), and the plastic fixing block (9) is in interference fit with the installation cavity (27).