CN214626558U

CN214626558U - Sound wave motor for electric toothbrush and electric toothbrush

Info

Publication number: CN214626558U
Application number: CN202120360619.9U
Authority: CN
Inventors: 吴颖峰
Original assignee: Chongqing Xiezheng Electromechanical Co ltd
Current assignee: Chongqing Xiezheng Electromechanical Co ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-11-05
Anticipated expiration: 2031-02-07

Abstract

The utility model provides a sound wave motor and electric toothbrush for electric toothbrush, this scheme is finally with the enameled wire winding on the winding core of the iron core left and right sides, and the both ends of enameled wire twine the same number of turns through spiral winding's mode in the axis of rotation in the middle of the iron core, form the fillet that the size is the same respectively, the axis of rotation in the middle of the enameled wire perpendicular to iron core of fillet horizontal end, the enameled wire of fillet upper end is on a parallel with the axis of rotation in the middle of the iron core, two line holes that pass the end cover respectively again of two heads of enameled wire. This scheme is through the setting of specific enameled wire structure like this, can be reciprocal distortion deformation by a wide margin with motor during operation enameled wire, turns into the bending deformation of minimum range to improved the fatigue life of sound wave motor, and simple structure, equipment are convenient, have still reduced the cost of manufacture.

Description

Sound wave motor for electric toothbrush and electric toothbrush

Technical Field

The utility model relates to an electric toothbrush technical field especially relates to a sound wave motor and electric toothbrush for electric toothbrush.

Background

The electric toothbrush can make the brush head generate high-frequency vibration through the quick rotation or vibration of the motor core, instantly decompose toothpaste into fine foam to deeply clean teeth gaps, and meanwhile, the vibration of the brush hair can promote the blood circulation of the oral cavity and has a massage effect on gum tissues.

However, when the motor in the electric toothbrush works, the enameled wire therein is repeatedly and greatly twisted due to the high-frequency reciprocating swing, so that the motor is easily broken by fatigue.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide an acoustic wave motor for an electric toothbrush and an electric toothbrush.

A sound wave motor for an electric toothbrush is characterized by comprising an end cover, a machine shell, an iron core winding, a fixing device and a rotating shaft, wherein the iron core winding is fixed in the machine shell through the fixing device, the lower end of the iron core winding is fixed in the upper end of the rotating shaft, and the rotating shaft is fixed at the lower end of the machine shell through a bearing; the iron core winding is fixed on the end cover through a bearing; the end cover is fixed at the upper end of the shell; the end cover is provided with two symmetrical line holes;

wherein, the iron core winding includes the iron core and twines enameled wire on the iron core, the iron core divide into the winding core of the left and right sides and middle axis of rotation, the enameled wire winding is in on the winding core of the iron core left and right sides, just the same number of turns of winding through spiral winding's mode is in the axis of rotation in the middle of the iron core, form the fillet that the size is the same respectively, the enameled wire perpendicular to of fillet horizontal end the axis of rotation in the middle of the iron core, the enameled wire of fillet upper end is on a parallel with the axis of rotation in the middle of the iron core, two rethreads of enameled wire do not pass two line holes of end cover.

Furthermore, a cylindrical hole is formed in the upper end of the rotating shaft, and the size of the cylindrical hole is matched with that of the lower end of the rotating shaft.

Furthermore, the lower extreme of axis of rotation is equipped with columniform location arch, location arch is used for fixing the iron core winding with the hookup location of pivot.

Further, the fixing device comprises a magnetic shoe and a bracket, wherein the magnetic shoe is fixed on the bracket and integrally fixed in the casing.

Furthermore, the end cover and the shell are connected in a detachable connection mode through a buckle.

An electric toothbrush comprises the sound wave motor for the electric toothbrush.

The utility model provides an axis of rotation in the middle of the iron core is twined the same number of turns through spiral winding's mode to the both ends of enameled wire, forms the fillet that the size is the same respectively in the axis of rotation in the middle of the iron core, the enameled wire of fillet horizontal end perpendicular to iron core, the enameled wire of fillet upper end is on a parallel with the axis of rotation in the middle of the iron core, two line holes that pass the end cover respectively are again crossed to the both ends of enameled wire. Through the setting of such specific enameled wire structure, can turn into the reciprocal deformation that twists by a wide margin of motor during operation enameled wire, turn into minimum range's bending deformation, can improve fatigue life, directly external through the enameled wire, simple structure, equipment are convenient, have reduced the cost of manufacture.

Drawings

FIG. 1 is a schematic view of a sonic motor for an electric toothbrush in one embodiment;

FIG. 2 is a schematic exploded view of a sonic motor for a power toothbrush in one embodiment;

FIG. 3 is a schematic diagram of the connection of the core winding to the shaft in one embodiment;

FIG. 4 is a schematic diagram of a core winding configuration in one embodiment;

FIG. 5 is a schematic view of the connection of the core windings to the fixture in one embodiment;

FIG. 6 is a schematic diagram of the connection of the core windings to the end caps in one embodiment;

FIG. 7 is a front view of the sonic motor of FIG. 1;

FIG. 8 is a rear view of the sonic motor of FIG. 1;

FIG. 9 is a left side view of the sonic motor of FIG. 1;

FIG. 10 is a right side view of the sonic motor of FIG. 1;

FIG. 11 is a top view of the sonic motor of FIG. 1;

FIG. 12 is a bottom view of the sonic motor of FIG. 1;

fig. 13 is a schematic structural view of both ends of the enamel wire in one embodiment.

In the drawing, an end cover 1, a wire hole 11, a housing 2, an iron core winding 3, an iron core 31, a winding core 311, a rotating shaft 312, a positioning protrusion 313, an enameled wire 32, a fixing device 4, a magnetic shoe 41, a bracket 42, a rotating shaft 5 and a bearing 6.

Detailed Description

In order to make the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 13, a sound wave motor for an electric toothbrush is provided, which includes an end cover 1, a case 2, an iron core winding 3, a fixing device 4 and a rotating shaft 5, wherein the end cover 1 is provided with two symmetrical wire holes 11 for two ends of an enameled wire 34 to pass through, the end cover 1 is fixed at the upper end of the case 2, and the end cover 1 and the case 2 are connected by a buckle to realize detachable connection. The shell 2 and the end cover 1 form a shell of the whole acoustic wave motor, and the iron core winding 3 and the fixing device 4 are wrapped.

The core winding 3 includes a core 31 and an enamel wire 32 wound around the core 31, the core 31 is divided into a winding core 311 on the left and right sides and a rotating shaft 312 in the middle, and a cylindrical positioning protrusion 313 is provided at the lower end of the rotating shaft 312. The enameled wire 32 is wound on the winding core 311 on the left side and the right side of the iron core 31, two ends of the enameled wire 32 are wound on the rotating shaft 312 in the middle of the iron core 31 in a spiral winding manner to form round corners with the same size, the enameled wire 32 at the horizontal end of the round corner is perpendicular to the rotating shaft 312 in the middle of the iron core 31, the enameled wire 32 at the upper end of the round corner is parallel to the rotating shaft 312 in the middle of the iron core 31, and two ends of the enameled wire 32 respectively pass through the two wire holes 11 of the end cover 1.

The fixing device 4 comprises four magnetic shoes 41 and a bracket 42, the four magnetic shoes 41 are respectively fixed on the corresponding openings of the bracket 42, and the fixing device 4 is integrally fixed in the machine shell 1. A cylindrical hole is arranged in the upper end of the rotating shaft 5, and the size of the cylindrical hole is matched with that of the lower end of the rotating shaft 312.

Specifically, the cylindrical hole of the rotary shaft 5 is used to accommodate the rotary shaft 312 in the core winding 3, and the positioning protrusion 313 on the rotary shaft 312 is used to determine its length penetrating into the rotary shaft 5, thereby determining the position of the rotary shaft 312. The joint of the upper end of the rotating shaft 5 and the positioning bulge 313 is fixed in the machine shell 2 through a bearing 6, the size of the lower port of the machine shell 2 is matched with the bearing 6, and the size of the upper port of the rotating shaft 5 is also matched with the bearing 6. Fixing device 4 sets up the internal surface at casing 2, a be used for fixed iron core winding 3, and the back comes out from winding core 311 in two of the enameled wire 32 on the iron core winding 3, through the same specific number of turns, twine the upper end at iron core 31 with spiral winding's mode, and after twining specific number of turns, parallel winding core 311, form the fillet of specific radius size again, go up perpendicularly again, iron core 31 upper end is fixed with end cover 1 through bearing 6, end cover 1 sets up the line hole 11 that two of holding enameled wire 32 pass through, the position of line hole 11 and the position cooperation of enameled wire 32, end cover 1 covers casing 2, thereby constitute complete sound wave motor.

In one embodiment, the enamel wire 32 is spirally wound around the upper end of the iron core 31 after coming out of the winding core 311, and is spirally wound for one and a half turns to form a fillet with a radius r of 1.5mm, which is based on the combination of the size of the internal space and the production manufacturability, and if the internal space is changed greatly in different specifications, it is possible to adjust the number of turns. The fatigue life of the sound wave motor can be prolonged from originally less than 5h to more than 500h under the settings of high frequency (200HZ-360HZ) and reciprocating swing (the swing amplitude is about +/-20 degrees).

In one embodiment, an electric toothbrush is provided that employs the sonic motor described above. Thereby prolonging the service life and saving the manufacturing cost.

In the above-mentioned embodiment, through with the enameled wire with above-mentioned specific shape, can be with the reciprocal distortion of great amplitude of motor during operation enameled wire, turn into the bending deformation of minimum range, can improve fatigue life, directly externally through the enameled wire, simple structure, equipment are convenient, have reduced the cost of manufacture.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A sound wave motor for an electric toothbrush is characterized by comprising an end cover, a machine shell, an iron core winding, a fixing device and a rotating shaft, wherein the iron core winding is fixed in the machine shell through the fixing device, the lower end of the iron core winding is fixed in the upper end of the rotating shaft, and the rotating shaft is fixed at the lower end of the machine shell through a bearing; the iron core winding is fixed on the end cover through a bearing; the end cover is fixed at the upper end of the machine cover; the end cover is provided with two symmetrical line holes;

2. The sonic motor of claim 1 wherein the upper end of the shaft has a cylindrical bore therein, the cylindrical bore having a size that matches the size of the lower end of the shaft.

3. The sonic motor of claim 2 wherein the lower end of the shaft has a cylindrical positioning protrusion for fixing the connection position of the core winding and the shaft.

4. The sonic motor of claim 1 wherein the fixture includes a magnetic shoe and a bracket, the magnetic shoe being secured to the bracket and being integrally secured within the housing.

5. The sonic motor of claim 1 wherein the end cap is removably connected to the housing by a snap-fit connection.

6. An electric toothbrush comprising a sonic motor for an electric toothbrush according to any of claims 1 to 5.