CN210807040U

CN210807040U - Power device for electric toothbrush

Info

Publication number: CN210807040U
Application number: CN201921538962.7U
Authority: CN
Inventors: 黄学辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-06-19
Anticipated expiration: 2029-09-17

Abstract

The utility model discloses a power device for an electric toothbrush, which comprises a shell, an excitation assembly and a power shaft assembly, wherein the excitation assembly comprises a left wire frame, a right wire frame and a coil winding, the left wire frame and the right wire frame are combined to form a winding frame, the coil winding is wound on the wire grooves of the left wire frame and the right wire frame, and a permanent magnetic group A and a permanent magnetic group B are respectively arranged at the outer sides of the left wire frame and the right wire frame; the power shaft assembly comprises a power shaft, a blind hole is formed in the top end of the power shaft, a return spring is arranged in the blind hole, the top of the return spring is connected with a return spring fixing piece, an iron core is arranged on the power shaft, and an upper bearing and a lower bearing are arranged on the power shaft; the excitation assembly is sleeved outside the power shaft assembly, then an upper bearing cover and a lower bearing cover are respectively arranged on the upper bearing and the lower bearing, and finally the outer shell is covered outside to form the motor main unit. The utility model has simple structure; the assembly is simple, and the cost is low; the structure layout is reasonable, the power consumption is small, and the output is large.

Description

Power device for electric toothbrush

Technical Field

The utility model relates to the technical field of electric toothbrushes, in particular to a power device for an electric toothbrush.

Background

Electric toothbrush, electric toothbrush set up power motor in the toothbrush handle, provide the vibration of certain frequency through power device and drive the vibration of brush head, from carrying out faster cleanness to the tooth, its clean effect is better than traditional toothbrush tooth brushing effect, therefore the inside power device who sets up of electric toothbrush is vital importance. The power device of the electric toothbrush in the prior art has the disadvantages of complex structure, time and labor waste in assembly, high cost and small output, and can not meet the requirements of people.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the above technical defects, and to provide a power device for an electric toothbrush.

In order to solve the technical problem, the utility model provides a technical scheme does: a power device for an electric toothbrush comprises a shell, an excitation assembly and a power shaft assembly, wherein the excitation assembly comprises a left wire frame, a right wire frame, a coil winding and a permanent magnet, the left wire frame and the right wire frame are combined to form a winding frame, the coil winding is wound on wire grooves of the left wire frame and the right wire frame of the winding frame, and a permanent magnet group A and a permanent magnet group B are respectively arranged on the outer sides of the left wire frame and the right wire frame; the power shaft assembly comprises a power shaft, an iron core, a reset spring fixing piece, an upper bearing and a lower bearing, a blind hole is formed in the top end of the power shaft, the reset spring is arranged in the blind hole, the top of the reset spring is connected with the reset spring fixing piece, the iron core is arranged on the power shaft and is formed by riveting a plurality of silicon steel sheets in a stacking mode, and the upper bearing and the lower bearing are respectively arranged on the upper end and the lower end, close to the iron core, of the power shaft; the excitation assembly is sleeved outside the power shaft assembly, then an upper bearing cover and a lower bearing cover are respectively arranged on the upper bearing and the lower bearing, and finally the outer shell is covered outside to form the motor main unit.

As an improvement, the permanent magnet group A and the permanent magnet group B both comprise two or four single magnets.

As an improvement, the upper bearing cover is provided with a bearing position, a coil lead groove position and an inosculation cavity position of a return spring fixing piece.

As an improvement, the iron core on the power shaft is not in a magnetic neutral line balance position in the assembly stage of the excitation assembly, the power shaft is in the center of the linear excitation structure after the motor main assembly is assembled, and the iron core is positioned in the center of the excitation assembly after the return spring fixing piece is installed in an inosculating cavity position of the upper bearing cover.

Compared with the prior art, the utility model the advantage lie in: 1. the structure is simple, and the whole body comprises a shell, an excitation assembly and a power shaft assembly; 2, the excitation assembly and the power shaft assembly are assembled respectively and then are installed together and are covered by a shell, so that the assembly is simple and the cost is low; 3. the power shaft assembly, the excitation assembly and the shell are assembled from inside to outside, the structural layout is reasonable, the power consumption is low, and the output is large.

Drawings

Fig. 1 is a schematic structural diagram of a power device for an electric toothbrush according to the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a plan view of an exploded view of the present invention.

Fig. 4 is a schematic structural view of the excitation assembly.

FIG. 5 is a schematic structural view of a power shaft assembly.

FIG. 6 is a schematic structural diagram of the connection of the excitation assembly and the power shaft assembly.

Fig. 7 is a structural schematic view of the upper bearing cap.

Fig. 8 is a magnetic force distribution diagram of the present invention after power-on.

As shown in the figure: 1. the magnetic bearing comprises a shell, 2. a power shaft, 3. a lower bearing, 4. a reset spring fixing piece, 5. an upper bearing, 6. an iron core, 7. a permanent magnet group A, 8. a left coil frame, 9. a right coil frame, 10. a permanent magnet group B, 11. a coil winding, 12. an upper bearing cover, 12.1. a bearing position, 12.2. a coil lead slot position, 12.3. an inosculation cavity position, 13. a lower bearing cover and 14. a reset spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

With reference to fig. 1-7, a power device for an electric toothbrush comprises a housing 1, an excitation assembly and a power shaft assembly, wherein the excitation assembly comprises a left wire frame 8, a right wire frame 9, a coil winding 11 and a permanent magnet, the left wire frame 8 and the right wire frame 9 are combined to form a winding group framework, the coil winding 11 is wound on wire grooves of the left wire frame 8 and the right wire frame 9 of the winding group framework, and the permanent magnet group a7 and the permanent magnet group B10 are respectively installed at the outer sides of the left wire frame 8 and the right wire frame 9; the power shaft assembly comprises a power shaft 2, an iron core 6, a reset spring fixing piece 4, an upper bearing 5 and a lower bearing 3, a blind hole is formed in the top end of the power shaft 2, a reset spring 14 is installed in the blind hole, the top of the reset spring 14 is connected with the reset spring fixing piece 4, the iron core 6 is arranged on the power shaft 2, the iron core 6 is formed by laminating and riveting a plurality of silicon steel sheets, and the upper bearing 5 and the lower bearing 3 are respectively arranged on the upper end and the lower end, close to the iron core 6, of the power shaft 2; the excitation assembly is sleeved outside the power shaft assembly, then an upper bearing cover 12 and a lower bearing cover 13 are respectively arranged on the upper bearing 5 and the lower bearing 3, and finally the outer shell 1 is covered outside to form the motor switchboard.

The permanent magnet group A7 and the permanent magnet group B10 both comprise two or four single magnets.

And the upper bearing cover 12 is provided with a bearing position 12.1, a coil lead slot position 12.2 and an inosculating cavity position 12.3 of the reset spring fixing piece 4.

The iron core 6 on the power shaft 2 is not in a magnetic neutral line balance position in the assembly stage of the excitation assembly, the power shaft 2 is in the center of the linear excitation structure after the motor switchboard is assembled, and the iron core 6 is located in the center of the excitation assembly after the return spring fixing piece 4 is installed in the matching cavity position 12.3 of the upper bearing cover 12.

The utility model discloses a structural component for electric toothbrush when concrete implementation, iron core 6 on the power shaft 2 is located the magnetism group assembly, not be in magnetism central line balanced position, when the upper and lower bearing of two location of dress, after upper and lower bearing cap and shell 1, power shaft 2 is in the center of line excitation structure, after reset spring mounting 4 packs into the identical type chamber position 12.3 of mounting of upper bearing cap 12, make silicon steel sheet iron core 6 be located the central point of magnetism group and put, the motor is static to be in balanced state, after the circular telegram, see the magnetic force distribution of figure 8, the switching-over circular telegram behind the ephemeral circular telegram that switches on, in the twinkling of an eye that magnetic force disappears, reset spring 14 compensation resilience, the action is all around to begin with, make the axle center swing about the axle center, output source power is constantly.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. A power device for an electric toothbrush, comprising a housing (1), an excitation assembly and a power shaft assembly, characterized in that:

the excitation assembly comprises a left wire frame (8), a right wire frame (9), a coil winding (11) and a permanent magnet, the left wire frame (8) and the right wire frame (9) are combined to form a winding group framework, the coil winding (11) is wound on wire grooves of the left wire frame (8) and the right wire frame (9) of the winding group framework, and a permanent magnet group A (7) and a permanent magnet group B (10) are respectively installed on the outer sides of the left wire frame (8) and the right wire frame (9);

the power shaft assembly comprises a power shaft (2), an iron core (6), a reset spring fixing piece (4), an upper bearing (5) and a lower bearing (3), a blind hole is formed in the top end of the power shaft (2), a reset spring (14) is installed in the blind hole, the top of the reset spring (14) is connected with the reset spring fixing piece (4), the iron core (6) is arranged on the power shaft (2), the iron core (6) is formed by overlapping and riveting a plurality of silicon steel sheets, and the upper bearing (5) and the lower bearing (3) are respectively arranged on the power shaft (2) and close to the upper end and the lower end of the iron core (6);

the excitation assembly is sleeved outside the power shaft assembly, then an upper bearing cover (12) and a lower bearing cover (13) are respectively arranged on the upper bearing (5) and the lower bearing (3), and finally the outer shell (1) is covered outside to form the motor master unit.

2. A power unit for an electric toothbrush according to claim 1, wherein: the permanent magnet group A (7) and the permanent magnet group B (10) both comprise two or four single magnets.

3. A power unit for an electric toothbrush according to claim 1, wherein: and an anastomosis cavity position (12.3) of the bearing position (12.1), the coil lead slot position (12.2) and the return spring fixing piece (4) is arranged on the upper bearing cover (12).

4. A power unit for an electric toothbrush according to claim 3, wherein: the iron core (6) on the power shaft (2) is not in a magnetic neutral line balance position in the assembly stage of the excitation assembly, the power shaft (2) is in the center of the linear excitation structure after the motor main assembly is assembled, and the iron core (6) is located in the center of the excitation assembly after the return spring fixing piece (4) is installed in an inosculation cavity position (12.3) of the upper bearing cover (12).