CN213552554U

CN213552554U - Electric tooth brush

Info

Publication number: CN213552554U
Application number: CN202022325715.8U
Authority: CN
Inventors: 张青; 崔晓勇
Original assignee: Saiwen Health Technology Suzhou Co ltd
Current assignee: Saiwen Health Technology Suzhou Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-06-29
Anticipated expiration: 2030-10-19

Abstract

The utility model provides an electric toothbrush, it includes: the brush head assembly, the motor, the waterproof sealing assembly, the inner shell assembly and the outer shell; the inner shell assembly is received and mounted in the outer shell, the inner shell assembly includes: interior casing and buckle closure, the motor install in the assembly groove of interior casing, and by the buckle closure compresses tightly fixedly, the output shaft of motor is certainly stretch out in the assembly groove, and with brush first subassembly transmission is connected, waterproof sealing assembly includes: the sealing sleeve is tightly sleeved on the output shaft under the hooping action of the elastic pressing ring, and a first shaft sealing structure is formed between the sealing sleeve and the output shaft. The utility model discloses an electric toothbrush has realized motor output shaft's good sealing through set up a waterproof sealing assembly on the output shaft of motor, prevents to lead to the inside intake of electric toothbrush in the use, has guaranteed the life of product.

Description

Electric tooth brush

Technical Field

The utility model relates to an electric toothbrush especially relates to an electric toothbrush that waterproof leakproofness is good.

Background

The electric toothbrush can instantly decompose toothpaste into fine foam to deeply clean slits between teeth, and simultaneously, the vibration of the brush can promote the blood circulation of an oral cavity, so that the electric toothbrush has a massage effect on gum tissues. However, since the conventional electric toothbrush uses the motor core as power, it is necessary to solve the problem of waterproof sealing of the output shaft of the motor core. Therefore, it is necessary to provide a further solution to the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electric toothbrush to overcome the defects existing in the prior art.

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

an electric toothbrush, comprising: the brush head assembly, the motor, the waterproof sealing assembly, the inner shell assembly and the outer shell;

the inner shell assembly is received and mounted in the outer shell, the inner shell assembly includes: interior casing and buckle closure, the motor install in the assembly groove of interior casing, and by the buckle closure compresses tightly fixedly, the output shaft of motor is certainly stretch out in the assembly groove, and with brush first subassembly transmission is connected, waterproof sealing assembly includes: the sealing sleeve is tightly sleeved on the output shaft under the hooping action of the elastic pressing ring, and a first shaft sealing structure is formed between the sealing sleeve and the output shaft.

As an improvement of the electric toothbrush of the present invention, the assembly groove is provided with a right spacing around the motor: the front baffle plate is provided with a hole suitable for the output shaft to extend out.

As an improvement of the electric toothbrush of the present invention, the spacing face of the front baffle plate and the profiling design of the front end face of the motor are provided with a cushion block between the rear baffle plate and the motor.

As an improvement of the electric toothbrush of the present invention, the sealing sleeve includes: the sealing sleeve comprises a sealing sleeve body, a sealing step arranged at the front end of the sealing sleeve body and a limiting bulge integrally extending from the periphery of the sealing step;

the seal cover body is axially arranged in a through mode, the seal step is located outside the inner shell, a second shaft seal structure is formed between the circumferential outer side face of the seal step and the outer shell, and the circumferential outer side face of the limit bulge is a sawtooth-shaped face.

As an improvement of the electric toothbrush of the present invention, the inner housing has a flange abutting against the sawtooth-shaped surface, and a groove structure is provided on the flange.

As an improvement of the electric toothbrush of the present invention, the brush head assembly includes: the toothbrush comprises a toothbrush head body and a hairbrush arranged at one end of the toothbrush head body, wherein one end of the output shaft is connected with the other end of the toothbrush head body through a transmission bushing contained in the toothbrush head body.

As an improvement of the electric toothbrush of the utility model, one end of the output shaft is connected with the transmission bushing in a detachable plug-in mode, the transmission bushing is correspondingly provided with an elastic buckle,

as an improvement of the electric toothbrush of the present invention, the electric toothbrush further comprises a battery, the battery is installed in the battery compartment of the inner housing.

As an improvement of the electric toothbrush of the present invention, the battery is a rechargeable battery, the rear end of the housing is provided with an end cover, and the end cover is provided with a charging interface of the battery.

As an improvement of the electric toothbrush of the present invention, the electric toothbrush further comprises a circuit board, the circuit board is fixed on the top surface of the inner housing, and is electrically connected to the motor and the battery.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an electric toothbrush has realized motor output shaft's good sealing through set up a waterproof sealing assembly on the output shaft of motor, prevents to lead to the inside intake of electric toothbrush in the use, has guaranteed the life of product.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is an exploded perspective view of the powered toothbrush of FIG. 1;

figure 3 is an enlarged perspective view of the gland of figure 2;

fig. 4 is an enlarged perspective view of the drive bushing of fig. 2.

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 a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 4, an embodiment of the present invention provides an electric toothbrush, which includes: brush head assembly 1, motor 2, waterproof seal assembly 3, inner shell assembly 4, outer shell 5, battery 6 and circuit board 7.

The inner shell assembly 4 is accommodated and installed in the outer shell 5, and a groove structure suitable for clamping the inner shell assembly 4 is correspondingly arranged on the inner side surface of the outer shell 5. The inner shell assembly 4 includes: an inner housing 41 and a snap cover 42. In order to facilitate the installation and fixation of the motor 2 and the battery 6, the inner housing 41 is provided with an assembly slot 411 and a battery compartment 412. Wherein, the motor 2 is installed in the assembly slot 411 of the inner housing 41 and is pressed and fixed by the buckle cover 42, and the output shaft 21 of the motor 2 is protruded from the assembly slot 411.

The battery 6 is mounted in the battery case 412 of the inner case 41. The battery 6 is a rechargeable battery, the rear end of the shell 5 is provided with an end cover 8, and the end cover 8 is provided with a charging interface 81 of the battery 6. The circuit board 7 is mounted on and fixed to the top surface of the inner case 41, and is electrically connected to the motor 2 and the battery 6.

Meanwhile, a front baffle 413 and a rear baffle 414 which limit the front and rear of the motor 2 are arranged in the assembling groove 411, and a hole suitable for the output shaft 21 to extend out is formed in the front baffle 413. In order to form a good fit with the motor 2, the limiting surface of the front baffle 413 and the front end surface of the motor 2 are designed in a contour manner, a cushion block is arranged between the rear baffle 414 and the motor 2, one surface of the cushion block is clamped in the groove of the rear baffle 414, and the other surface of the cushion block abuts against the motor 2.

The output shaft 21 of the motor 2 is in transmission connection with the brush head assembly 1, so that the electric brush head assembly 1 can generate high-frequency vibration, toothpaste can be decomposed into fine foam conveniently, and a certain massage effect is achieved. In order to solve the waterproof sealing problem of the output shaft 21, the waterproof sealing assembly 3 is arranged on the output shaft 21 of the motor 2, so that water can be prevented from entering the electric toothbrush in the using process, and the service life of a product is further ensured.

The waterproof seal assembly 3 includes: the sealing sleeve 31 is tightly sleeved on the output shaft 21 under the clamping action of the elastic pressing ring 32, and a first shaft sealing structure is formed between the sealing sleeve 31 and the output shaft 21. Wherein, seal cover 31 can adopt rubber material's seal cover 31, and elastic pressure ring 32 can adopt the spring, so under the elastic force effect of spring, the inseparable cover of rubber seal cover 31 is on motor 2 output shaft 21, and outside water can't flow into inside the product along the output shaft 21 that stretches out.

Specifically, the seal cover 31 includes: the sealing boot body 311, set up in the sealed step 312 of sealing boot body 311 front end, from the spacing arch 313 that stretches out of sealed step 312 all around an organic whole. The sealing sleeve body 311 is axially disposed through, and the sealing sleeve body 311 is fitted over the output shaft 21 of the motor 2 to form the first shaft sealing structure.

Meanwhile, the sealing step 312 is located outside the inner housing 41, and a second shaft sealing structure is formed between the circumferential outer side surface of the inner housing and the outer housing 5, so that external water is prevented from flowing into the product along the gap between the outer housing 5 and the inner housing assembly 4. In addition, the limiting protrusion 313 is used for keeping the sealing sleeve 31 fixed in position, so as to prevent the sealing sleeve 31 from rotating, and further influence the axial sealing effect. Wherein, the circumferential outer side surface of the limiting protrusion 313 is a sawtooth-shaped surface. At this time, the inner housing 41 has a flange 415 abutting against the sawtooth surface, and the flange 415 is provided with a slot structure. So set up, can realize preventing the pivoted purpose of seal cover 31 through the turn-ups with spacing protruding 313's cooperation.

In this embodiment, brush first subassembly 1 can conveniently replace as required, and is corresponding, brush and have certain clearance between first subassembly 1 and the shell 5, owing to set up above-mentioned waterproof sealing assembly 3, can avoid intaking from the clearance.

Specifically, the brush head assembly 1 includes: a brush head body 11 and a brush 12 arranged at one end of the brush head body 11. One end of the output shaft 21 is connected with the other end of the brush head body 11 through a transmission bush 13 accommodated in the brush head body 11. In order to realize the detachable connection of the brush head assembly 1, one end of the output shaft 21 is connected with the transmission bushing 13 in a detachable plug-in manner, and the transmission bushing 13 is correspondingly provided with an elastic buckle 131.

So set up, when pulling out the dismantlement brush head subassembly 1, along with the extraction of brushing head subassembly 1, above-mentioned elastic buckle 131 can break away from through the draw-in groove on self deformation and the output shaft 21, and when the brush head subassembly 1 of replacement type, elastic buckle 131 can block the brush head subassembly 1 after the replacement again through the elastic recovery effort.

To sum up, the utility model discloses an electric toothbrush has realized motor output shaft's good sealing through set up a waterproof sealing assembly on the output shaft of motor, prevents to lead to the inside intake of electric toothbrush in the use, has guaranteed the life of product.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An electric toothbrush, comprising: the brush head assembly, the motor, the waterproof sealing assembly, the inner shell assembly and the outer shell;

2. The electric toothbrush according to claim 1, wherein the fitting groove is provided therein with a stopper for stopping the motor forward and backward: the front baffle plate is provided with a hole suitable for the output shaft to extend out.

3. The electric toothbrush of claim 2, wherein the front baffle has a stop surface contoured to the front face of the motor, and a spacer is disposed between the rear baffle and the motor.

4. The electric toothbrush of claim 1, wherein the sealing sleeve comprises: the sealing sleeve comprises a sealing sleeve body, a sealing step arranged at the front end of the sealing sleeve body and a limiting bulge integrally extending from the periphery of the sealing step;

the seal sleeve body is axially arranged in a through mode, the seal step is located outside the inner shell, a second shaft seal structure is formed between the circumferential outer side face of the seal step and the outer shell, and the circumferential outer side face of the limit protrusion is a sawtooth-shaped face.

5. The powered toothbrush as defined in claim 4, wherein the inner housing has a flange abutting against the serrated surface, the flange having a slot structure.

6. The powered toothbrush of claim 1, wherein the brushhead assembly includes: the toothbrush comprises a toothbrush head body and a hairbrush arranged at one end of the toothbrush head body, wherein one end of the output shaft is connected with the other end of the toothbrush head body through a transmission bushing contained in the toothbrush head body.

7. The electric toothbrush according to claim 6, wherein one end of the output shaft is detachably connected to the transmission bushing, and the transmission bushing is correspondingly provided with an elastic buckle.

8. The electric toothbrush of claim 1, further comprising a battery mounted in a battery compartment of the inner housing.

9. The electric toothbrush of claim 8, wherein the battery is a rechargeable battery, and an end cap is disposed at the rear end of the housing, and a charging interface of the battery is disposed on the end cap.

10. The electric toothbrush of claim 8 further comprising a circuit board mounted on and secured to the top surface of the inner housing and electrically connected to the motor and the battery.