CN219461487U

CN219461487U - Electric toothbrush

Info

Publication number: CN219461487U
Application number: CN202320544156.0U
Authority: CN
Inventors: 王红晶
Original assignee: Beijing Yaya Diary Technology Co ltd
Current assignee: Beijing Yaya Diary Technology Co ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-08-04
Anticipated expiration: 2033-03-16

Abstract

The utility model discloses an electric toothbrush, comprising: a brush head; the brush holder, the brush holder includes first casing and second casing, first casing has first link, the second casing has the second link, first link is equipped with first joint portion, the second casing be equipped with on the lateral wall of second link with the joint face of first joint portion adaptation, first joint portion cover in on the joint face and with joint face joint, the second link is equipped with second joint portion, second joint portion joint in the inside wall of first casing. According to the embodiment of the application, the first clamping part is arranged on the first connecting end of the first shell, the adaptive clamping surface is arranged on the side wall of the second connecting end of the second shell, and when the first shell is connected with the second shell, the first clamping part is matched with the clamping surface and is clamped, so that the contact area of the first shell and the second shell can be increased, and the connection strength is improved.

Description

Electric toothbrush

Technical Field

The utility model relates to the field of toothbrushes, in particular to an electric toothbrush.

Background

At present, with the development of society, the living standard of people is higher and higher, and the use of electric toothbrushes is also more and more common. At present, the functions of an electric toothbrush are more and more complicated, so that the number of internal components is more, and the brush handle of the electric toothbrush is generally in a thinner and longer shape for convenient holding, so that the components are more difficult to install. In order to facilitate the installation, the brush handle is mostly designed into two sections in the market at present, and the two sections of brush handles are connected after the internal components are installed, so that the installation difficulty of the internal components is reduced.

However, most of the two-section brush handles are combined only for the cross section of the two brush handles or a few buckles, so that the combined area of the two-section brush handles is smaller and the connection strength is lower.

The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present utility model and is not intended to represent an admission that the foregoing is prior art.

Disclosure of Invention

The utility model mainly aims to provide an electric toothbrush, which aims to solve the problem of lower connection strength of a two-section brush handle in the background technology.

To achieve the above object, the present utility model provides an electric toothbrush comprising:

a brush head;

the brush handle comprises a first shell and a second shell, wherein the first shell is provided with a first connecting end, the second shell is provided with a second connecting end, the first connecting end is provided with a first clamping part, the second shell is provided with a clamping surface matched with the first clamping part on the outer side wall of the second connecting end, the first clamping part covers the clamping surface and is clamped with the clamping surface, the second connecting end is provided with a second clamping part, and the second clamping part is clamped on the inner side wall of the first shell;

the driving shaft of the driving motor extends out of the first shell and is connected with the brush head, and the battery is electrically connected with the driving motor.

In this embodiment of the present application, a height difference is formed between the clamping surface and an outer side wall of the second housing, and the height difference is formed from the outer side wall of the second housing into the second housing; the clamping surface extends to the end face of the second connecting end; the first clamping part is arranged in a height difference area between the clamping surface and the outer side wall of the second shell.

In the embodiment of the application, the clamping surface is an arc surface and is coaxial with the second shell, and the radian of the clamping surface is smaller than 360 degrees;

the first clamping part is of an arc-shaped sheet structure, and the first clamping part is coaxial with the first shell.

In this embodiment of the present application, a wall thickness of the first clamping portion is the same as the height difference.

In this application embodiment, the joint face with be equipped with first spacing groove on the difference between the second casing lateral wall, be equipped with on the first joint portion with the first stopper of first spacing groove adaptation.

In this embodiment of the present application, one of the inner side wall of the first clamping portion and the clamping surface is provided with a first buckle, and the other is provided with a first clamping groove adapted to the first buckle.

In this embodiment of the present application, a glue groove is formed on an inner sidewall of the first clamping portion and/or on the clamping surface.

In this embodiment of the present application, the air hole communicating the inside of the second casing is provided on the clamping surface.

In this embodiment of the present application, the second connection end is provided with a first annular sealing portion, and the first annular sealing portion extends into the first housing from the first connection end, and an outer side wall of the first annular sealing portion abuts against an inner side wall of the first housing;

the outer side wall of the first annular sealing part and/or the inner side wall of the first shell, which is in butt joint with the outer side wall of the first annular sealing part, is provided with a first sealing groove, and a first sealing ring is arranged in the first sealing groove.

In this embodiment of the present application, the outer sidewall of the first annular sealing portion and the clamping surface are located on the same arc surface.

In this embodiment of the present application, the first connection end is provided with a first protrusion on an outer side wall far away from one side of the first clamping portion, and an outer side surface of the first protrusion is connected with an outer side wall of the first housing in a smooth manner;

the second connecting end is provided with a second bulge on the outer side wall far away from one side of the clamping face, and the outer side face of the second bulge is connected with the outer side wall of the second shell in a smooth manner;

The first protrusion and the second protrusion are symmetrical along a joint surface of the first connection end and the second connection end.

In this application embodiment, second joint portion includes a plurality of second buckles, a plurality of second buckles are located first annular seal portion is kept away from one side of joint face, be equipped with on the first casing inside wall with a plurality of second draw-in grooves of a plurality of second buckle adaptations.

In an embodiment of the present application, the handle further comprises a first bracket and a second bracket;

the first bracket is positioned in the first shell and the second shell, and a driving motor installation position and a battery installation position are arranged on the first bracket;

a plurality of mounting grooves are formed in the inner side wall of the first shell, and a plurality of first guide rails matched with the mounting grooves are arranged on the first support;

the inner side wall of the second shell is provided with a plurality of guide grooves, and the first bracket is provided with a plurality of second guide rails corresponding to the guide grooves;

the second bracket covers the driving motor installation position.

In the embodiment of the application, a second annular sealing part is arranged at the inner bottom of the second shell;

the brush handle also comprises a third bracket, a third annular sealing part matched with the second annular sealing part is arranged at the bottom of the third bracket, and a second sealing ring is arranged between the second annular sealing part and the third annular sealing part;

The upper part of the third bracket is provided with an inner concave cavity, the bottom of the inner concave cavity is provided with a through hole, and the through hole is communicated with the enclosing area of the third annular sealing part, so that the enclosing area of the third annular sealing part forms an acoustic cavity;

the bottom of second casing is equipped with the horn hole, the horn hole intercommunication the acoustic cavity.

In this embodiment of the present application, an annular protrusion is further disposed at the bottom of the third support, a diameter of the annular protrusion is greater than a diameter of the third annular sealing portion, and a first annular clamping groove is formed between the third annular sealing portion and the annular protrusion;

the second annular sealing part is arranged in the first annular clamping groove.

In this application embodiment, the bottom of first support is equipped with a plurality of third buckles, the lateral wall of third support be equipped with a plurality of third draw-in grooves of a plurality of third buckle adaptations.

In this application embodiment, the brush holder still includes display screen and perspective mirror, be equipped with the inside perspective mirror mounting hole of intercommunication on the lateral wall of first casing, first support with the position that the perspective mirror mounting hole corresponds is equipped with the display screen mounting groove, the perspective mirror is located in the perspective mirror mounting hole, the display screen is located in the display screen mounting groove.

In this application embodiment, the brush holder still includes the function button, be equipped with the inside function button mounting hole of intercommunication on the lateral wall of second casing, the function button is located in the function button mounting hole.

In the embodiment of the application, the driving shaft of the driving motor is a driving shaft with the frequency of 10HZ-35HZ and the swinging angle of 5 DEG-15 deg.

According to the embodiment of the application, the first clamping part is arranged on the first connecting end of the first shell, the adaptive clamping surface is arranged on the side wall of the second connecting end of the second shell, and when the first shell is connected with the second shell, the first clamping part is matched with the clamping surface and is clamped, so that the contact area of the first shell and the second shell can be increased, and the connection strength is improved.

Drawings

FIG. 1 is a schematic view of an electric toothbrush according to an embodiment of the present application;

FIG. 2 is a schematic view of the structure of a first housing of an electric toothbrush according to an embodiment of the present application;

FIG. 3 is a schematic view of a second housing of an electric toothbrush according to an embodiment of the present application;

FIG. 4 is a schematic view of the structure of a first, a second and a third rack of the electric toothbrush according to an embodiment of the present application;

FIG. 5 is a cross-sectional view of a first housing of an electric toothbrush according to an embodiment of the present application;

FIG. 6 is a schematic view of the structure of a second housing of the electric toothbrush according to an embodiment of the present application;

FIG. 7 is a cross-sectional view of an electric toothbrush according to an embodiment of the present application;

FIG. 8 is a schematic structural view of a third holder of an electric toothbrush according to an embodiment of the present application;

fig. 9 is a schematic structural view of a third holder of an electric toothbrush according to another embodiment of the present application;

FIG. 10 is another cross-sectional view of an electric toothbrush according to an embodiment of the present application;

fig. 11 is an enlarged view of a region B in fig. 10;

fig. 12 is an enlarged view of the area a in fig. 7.

Reference numerals: 100-brush head, 200-brush handle, 210-first housing, 211-first connecting end, 212-first clamping portion, 213-first clamping groove, 214-second clamping groove, 215-first limiting block, 216-first protrusion, 217-mounting groove, 218-second annular clamping groove, 219-second limiting groove, 220-perspective view mirror mounting hole, 230-second housing, 231-second connecting end, 232-clamping face, 233-second clamping portion, 234-first buckle, 235-second buckle, 236-offset face, 237-first limiting groove, 238-glue groove, 239-vent, 240-first annular sealing portion, 241-first sealing groove, 242-second protrusion, 243-guide groove, 244-second annular sealing part, 245-function key mounting hole, 246-horn hole, 250-first bracket, 251-first guide rail, 252-second guide rail, 253-first arc-shaped protrusion, 254-second limiting block, 255-third buckle, 256-driving motor mounting position, 257-battery mounting position, 260-second bracket, 261-second arc-shaped protrusion, 270-third bracket, 271-inner cavity, 272-third annular sealing part, 273-through hole, 274-sound cavity, 275-second sealing ring, 276-waterproof film, 277-annular protrusion, 278-first annular clamping groove, 279-third clamping groove, 310-battery, 320-loudspeaker, 330-perspective mirror and 350-function key.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that, in the embodiment of the present application, directional indications (such as up, down, left, right, front, and rear … …) are referred to, and the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

As shown in fig. 1, the present exemplary embodiment proposes an electric toothbrush including:

a brush head 100;

the brush holder 200, the brush holder 200 includes a first housing 210 and a second housing 230, the first housing 210 has a first connection end 211, the second housing 230 has a second connection end 231, the first connection end 211 is provided with a first clamping portion 212, the second housing 230 is provided with a clamping surface 232 adapted to the first clamping portion 212 on an outer sidewall of the second connection end 231, the first clamping portion 212 covers the clamping surface 232 and is clamped to the clamping surface 232, the second connection end 231 is provided with a second clamping portion 233, and the second clamping portion 233 is clamped to an inner sidewall of the first housing 210;

and a driving motor and a battery 310, both of which are provided in the brush holder 200, a driving shaft of the driving motor protrudes from the first housing 210 and is connected with the brush head 100, and the battery is electrically connected with the driving motor.

In the embodiment of the present application, the brush holder 200 is generally cylindrical and is composed of a first housing 210 and a second housing 230, and the first housing 210 and the second housing 230 are hollow to form a receiving cavity for mounting components such as a driving motor, a battery 310, a circuit board, and the like.

As shown in fig. 2 and 3, the first housing 210 has a first connection end 211, the first connection end 211 is provided with an opening communicating with the inside of the first housing 210, the second housing 230 has a second connection end 231, the second connection end 231 is provided with an opening communicating with the inside of the second housing 230, and the first housing 210 and the second housing 230 are connected through the first connection end 211 and the second connection end 231.

With continued reference to fig. 2 and 3, the first clamping portion 212 is disposed protruding from the first connecting end 211, the outer sidewall of the second housing 230 is provided with a clamping surface 232, and an inner sidewall of the first clamping portion 212 is adapted to the clamping surface 232, for example, the inner sidewall of the first clamping portion 212 is contoured to the clamping surface 232, that is, a contour of the first clamping portion 212 is the same as a contour of the clamping surface 232, so that the first clamping portion 212 can just cover the clamping surface 232. The inner side wall of the first clamping portion 212 covers and abuts against the clamping surface 232 during installation. In addition, a first buckle 234 may be further disposed on one of the inner sidewall of the first clamping portion 212 and the clamping surface 232, and a first clamping groove 213 may be disposed on the other, in this embodiment, a first clamping groove 213 is disposed on the inner sidewall of the first clamping portion 212, a first buckle 234 is disposed on the clamping surface 232, and when the first clamping portion 212 is abutted on the clamping surface 232, the first buckle 234 and the first clamping groove 213 are adapted and clamped.

With continued reference to fig. 2 and 3, in this embodiment, the second clamping portion 233 may be a second buckle 235, where the second buckle 235 extends from the second connection end 231, and a corresponding second clamping groove 214 is disposed on an inner side wall of the first housing 210, so that the second buckle 235 extends into the first housing 210 during installation and is clamped with the second clamping groove 214.

In this embodiment, the second buckle 235 is disposed at the second connection end 231 of the second housing 230, the second clamping groove 214 is disposed on the inner side wall of the first connection end 211 of the first housing 210, the second buckle 235 and the second clamping groove 214 can clamp the first connection end 211 and the second connection end 231 together, besides, the first clamping portion 212 is disposed at the first connection end 211, the first clamping portion 212 protrudes out of the end face of the first connection end 211, the clamping face 232 is disposed on the outer side wall of the second connection end 231, and when the first connection end 211 and the second connection end 231 are connected, the first clamping portion 212 covers the clamping face 232, and the inner side wall of the first clamping portion 212 is clamped with the clamping face 232.

In general, for the two-section brush handle, most of the two sections are connected only by the transverse end surfaces of the two sections, compared with the two sections, in this embodiment, after the first connecting end 211 and the second connecting end 231 are connected, the contact positions of the two sections include the positions where the inner side wall of the first clamping portion 212 abuts against the clamping surface 232 in addition to the transverse end surface positions of the first connecting end 211 and the second connecting end 231, and compared with the transverse end surfaces of the first connecting end 211 and the second connecting end 231, the clamping surface 232 disposed on the outer side wall of the brush handle 200 can greatly increase the contact area of the first casing 210 and the second casing 230, so as to improve the connection strength of the first casing 210 and the second casing 230.

As shown in fig. 2 and 3, in the embodiment of the present application, a height difference is formed between the clamping surface 232 and the outer side wall of the second housing 230, and the height difference is formed from the outer side wall of the second housing 230 into the second housing 230, the clamping surface 232 extends to the end surface of the second connecting end 231, and the first clamping portion 212 is disposed in a height difference region between the clamping surface 232 and the outer side wall of the second housing 230.

Specifically, when the clamping surface 232 is provided, a height difference may be provided from the end surface of the second connection end 231 toward the inside of the second housing 230, thereby forming the clamping surface 232 and the step surface 236 surrounding the clamping surface 232. The clamping surface 232 extends to the end face of the second connecting end 231, when the first connecting end 211 is connected with the second connecting end 231, the first clamping portion 212 can be directly inserted into a height difference region formed between the clamping surface 232 and the outer side wall of the second housing 230 from the end face of the second connecting end 231 to the other end of the second housing 230, so that the inner side wall of the first clamping portion 212 is abutted against the clamping surface 232, and the difference surface 236 between the clamping surface 232 and the outer side wall of the second housing 230 can also play a limiting role on the first clamping portion 212, so that relative rotation between the first housing 210 and the second housing 230 is avoided. In addition, the clamping surface 232 is communicated with the first connecting end 211, so that a socket is necessarily formed at the end face of the second connecting end 231 by the clamping surface 232, and the socket can also play a role in guiding and positioning, so that the assembly between the first housing 210 and the second housing 230 is facilitated.

With continued reference to fig. 3, the clamping surface 232 is an arc surface and is coaxial with the second housing 230, and the radian of the clamping surface 232 is less than 360 degrees; the first clamping portion 212 is an arc-shaped sheet structure and is coaxial with the first housing 210. The first casing 210 and the second casing 230 are both substantially cylindrical, the outer side walls of the first casing 210 and the second casing 230 are arc surfaces, the first casing 210 and the second casing 230 can be arranged to be coaxial with the second casing 230 when the clamping surface 232 is arranged, the radian of the clamping surface is smaller than 360, namely, the clamping surface 232 does not penetrate in the circumferential direction of the second casing 230, the corresponding first clamping portion 212 can also be arranged to be coaxial with the first casing 210 in an arc-shaped sheet structure, and the first clamping portion 212 of the arc-shaped sheet structure is adapted to the arc-shaped clamping surface 232 during assembly, so that the assembly is convenient, and the connection strength is high.

As shown in fig. 1, 2 and 3, in the embodiment of the present application, the wall thickness of the first clamping portion 212 is the same as the height of the height difference between the clamping surface 232 and the outer side wall of the second housing 230. The thickness of the first clamping portion 212 and the height difference between the clamping surface 232 and the outer side wall of the second housing 230 are the same, and the first clamping portion 212 and the clamping surface 232 are coaxial, so that after the first clamping portion 212 is assembled on the clamping surface 232, no break difference exists between the first housing 210 and the second housing 230, and discomfort caused to the held hand is avoided.

As shown in fig. 2 and 3, in the embodiment of the present application, a first limiting groove 237 is disposed on a difference surface 236 between the clamping surface 232 and the outer side wall of the second housing 230, and a first limiting block 215 adapted to the first limiting groove 237 is disposed on the first clamping portion 212.

Referring to fig. 3, the outer side wall of the second housing 230 is provided with a height difference inward, and the clamping surface 232 extends to the end surface of the second connecting end 231, so that the clamping surface 232 inevitably has a step surface 236 around the side other than the side connected to the end surface of the second connecting end 230, and it should be noted that the clamping surface 232 may or may not penetrate along a circumference of the second housing 230, and fig. 3 is a schematic view of non-penetrating structure, the step surface is substantially U-shaped, and a first limiting groove 237 is provided on the step surface 236, and an adapted first limiting block 215 is provided at a position corresponding to the first clamping portion 212, so that during assembling, the first limiting block 215 on the first clamping portion 212 can be inserted into the first limiting groove 237 on the step surface 236, thereby preventing the first clamping portion 212 from being turned outwards or from being tilted. In addition, the differential surface 236 in fig. 3 is substantially U-shaped, and the first limiting grooves 237 are disposed on two vertical differential surfaces 236, but in other embodiments, the first limiting grooves 237 may be disposed on the horizontal differential surfaces 236, and the corresponding first limiting blocks 215 may be disposed at positions corresponding to the first clamping portions 212. In addition, in other embodiments, the land 236 may have other shapes, such as V-shaped, semi-circular, etc., and the embodiments herein do not limit the shape of the land 236 and the specific location of the first limiting groove 237 on the land 236. In addition, in another embodiment, when the engaging surface 232 extends along a circumference of the second housing 230, the stepped surface is only a circle of annular surface, and there is no vertical stepped surface 236 similar to the structure of fig. 3, and the first limiting groove 237 may be disposed on the circle of annular surface.

As shown in fig. 3, in the embodiment of the present application, a glue groove 238 is provided on the inner sidewall of the first clamping portion 212 and/or the clamping surface 232. Specifically, the adhesive groove 238 may be disposed on the clamping surface 232, the adhesive groove 238 may be disposed on the inner side wall of the first clamping portion 212, or the adhesive groove 238 may be disposed on both of the first and second shells 210 and 230, before the first and second shells 210 and 230 are assembled, adhesive may be applied to the adhesive groove 238, and then the first and second shells 210 and 230 are connected, and after the adhesive is solidified, the connection strength between the first and second shells 210 and 230 may be increased. In addition, by providing the glue groove 238 and filling glue in the glue groove 238, a sealing effect can be achieved. It should be noted that, in fig. 3, the specific path of the glue groove 238 is U-shaped, and in other embodiments, the specific path of the glue groove 238 may be other shapes, and the path of the glue groove 238 is not limited in this embodiment.

As shown in fig. 3, in the embodiment of the present application, the fastening surface 232 is provided with an air hole 239 communicating with the inside of the second housing 230. The brush holder 200 generally has waterproof effect, namely the air tightness of the brush holder 200 is good, when the electric toothbrush works, the internal air pressure of the brush holder 200 is increased due to heat of a battery and a circuit, and if the internal air pressure and the external air pressure are not balanced in time, the using effect is affected. In this embodiment, the vent 239 is disposed at the position of the clamping surface 232, and when the air pressure inside the brush handle 200 increases, the air inside the brush handle 200 can be discharged along the tiny gap between the clamping surface 232 and the first clamping portion 212, so as to avoid the increase of the air pressure inside the brush handle 200.

As shown in fig. 2 and 3, in the embodiment of the present application, the second connection end 231 is provided with a first annular sealing portion 240, the first annular sealing portion 240 extends into the first housing 210 from the first connection end 211, and an outer sidewall of the first annular sealing portion 240 abuts against an inner sidewall of the first housing 210; the outer sidewall of the first annular sealing portion 240 and/or the inner sidewall of the first housing 210 abutting against the outer sidewall of the first annular sealing portion 240 are provided with a first sealing groove 241, and a first sealing ring is provided in the first sealing groove 241.

Specifically, the first annular sealing portion 240 is an outer side wall of the second housing 230 extending from the second connection end 231, and the wall thickness of the first annular sealing portion 240 may be set smaller than that of the second housing 230, that is, the outer diameter of the first annular sealing portion 240 is smaller than that of the second housing 230, so that the first annular sealing portion 240 protruding from the second connection end 231 can extend into the first housing 210. After the first annular sealing portion 240 extends into the first housing 210, a sealing structure can be formed by matching the first sealing ring with the inner side wall of the first housing 210. The first annular sealing portion 240 may function to increase a contact area between the first housing 210 and the second housing 230, to increase a connection strength between the first housing 210 and the second housing 230, and may function to seal. The first sealing groove 241 for accommodating the first sealing ring may be disposed on the outer sidewall of the first annular sealing portion 240, may be disposed on the inner sidewall of the first housing 210, or may be disposed on both the inner sidewall of the first housing 210 and the outer sidewall of the first annular sealing portion 240.

As shown in fig. 3, in the embodiment of the present application, the outer sidewall of the first annular sealing portion 240 and the clamping surface 232 are located on the same circular arc surface. The outer sidewall of the first annular sealing portion 240 is disposed coaxially with the clamping surface 232, so that the production process can be simplified and the production cost can be reduced.

As shown in fig. 1 and 2, in the embodiment of the present application, the first connection end 211 is provided with a first protrusion 216 on an outer side wall of a side far away from the first clamping portion 212, and the first protrusion 216 is connected with the outer side wall of the first housing 210 in a smooth manner; the second connecting end 231 is provided with a second protrusion 242 on the outer side wall far away from the clamping surface 232, and the second protrusion 242 is in smooth connection with the outer side wall of the second shell 230; the first protrusion 216 and the second protrusion 242 are symmetrical along the combining plane of the first connection end 211 and the second connection end 231 in the lateral direction. The first housing 210 and the second housing 230 are substantially cylindrical, and are still cylindrical when assembled, and are easy to roll when placed on a table. In the embodiment of the present application, the first protrusion 216 and the second protrusion 242 are provided to function as a roll preventing function. In addition, the first protrusion 216 and the second protrusion 242 are respectively and smoothly connected with the first housing 210 and the second housing 230, and the first protrusion 216 and the second protrusion 242 are mirror images of each other, so that the anti-slip effect can be achieved when the user holds the handle, discomfort to the user is not caused by the smooth connection, and in addition, the first protrusion 216 and the second protrusion 242 can also play a role in prompting the holding position.

As shown in fig. 2 and fig. 3, in the embodiment of the present application, the second clamping portion 233 includes a plurality of second buckles 235, the plurality of second buckles 235 are disposed on a side of the first annular sealing portion 240 away from the clamping surface 232, and a plurality of second clamping grooves 214 adapted to the plurality of second buckles 235 are disposed on an inner side wall of the first housing 210. The second buckle 235 is arranged on the first annular sealing part 240, after the first annular sealing part 240 stretches into the first shell 210, the second buckle 235 is clamped with the corresponding second clamping groove 214, the second buckle 235 is arranged on one side, away from the clamping face 232, of the first annular sealing part 240, and the first buckle 234 on the clamping face 232 is matched with the first buckle 234, so that a clamping structure can be formed on one circle of the brush handle 200, and accordingly, the brush handle has high connection strength.

As shown in fig. 4, 5, 6, and 7, in the embodiment of the present application, handle 200 further includes a first support 250 and a second support 260; the first bracket 250 is located in the first housing 210 and the second housing 230, and a driving motor mounting position 256 and a battery mounting position 257 are provided on the first bracket 250; the inner side wall of the first housing 210 is provided with a plurality of mounting grooves 217, and the first bracket 250 is provided with a plurality of first guide rails 251 which are matched with the plurality of mounting grooves 217; the second casing 230 has a plurality of guide grooves 243 on an inner sidewall thereof, and the first bracket 250 has a plurality of second guide rails 252 corresponding to the plurality of guide grooves 243; the second bracket 260 is covered on the driving motor mounting position 256.

In this embodiment, the upper end portion of the first bracket 250 is located in the first housing 210, the lower end portion is located in the second housing 230, that is, the first housing 210 and the second housing 230 together house the first bracket 250, the first bracket 250 is provided with first guide rails 251 on two sides of the upper end, second guide rails 252 on two sides of the lower end, the mounting groove 217 is disposed at the position corresponding to the first guide rails 251 on the inner side wall of the first housing 210, and the guide groove 243 is disposed at the position corresponding to the second guide rails 252 on the inner side wall of the second housing 230.

In addition, the upper end of the first housing 210 is provided with an opening, the driving shaft of the driving motor extends out to be connected with the brush head 100, a second annular clamping groove 218 is further formed in the top wall of the inner side of the first housing 210, a first arc-shaped protrusion 253 is formed in the upper end of the first bracket 250, a second arc-shaped protrusion 261 is formed in the upper end of the second bracket 260, the first arc-shaped protrusion 253 and the second arc-shaped protrusion 261 are combined and then are matched with the second annular clamping groove 218, and in addition, a sealing ring can be further arranged between the combined first arc-shaped protrusion 253, second arc-shaped protrusion 261 and the second annular clamping groove 218, so that good sealing performance is guaranteed.

In assembly, the driving motor is disposed at the driving motor mounting position 256, the second bracket 260 is covered on the driving motor and connected with the first bracket 250 by a screw, and then the first guide rail 251 of the first bracket 250 is inserted into the first housing 210 along the mounting groove 217.

In another embodiment, the mounting groove 217 is further provided with a second limiting groove 219 near the first connecting end 211, the first guide rail 251 is provided with a second limiting block 254 adapted thereto, and the first guide rail 251 and the mounting groove 217 are provided with the second limiting groove 219 and the second limiting block 254 adapted thereto, so that the first bracket 250 can be conveniently mounted on the first housing 210 in a proper position.

As shown in fig. 4, 6, 8, 9, 10, 11, in the embodiment of the present application, the inner bottom of the second case 230 is provided with a second annular sealing portion 244; the brush holder 200 further comprises a third bracket 270, a third annular sealing part 272 matched with the second annular sealing part 244 is arranged at the bottom of the third bracket 270, and a second sealing ring 275 is arranged between the second annular sealing part 244 and the third annular sealing part 272; the upper part of the third bracket 270 is provided with an inner concave cavity 271, the bottom of the inner concave cavity 271 is provided with a through hole 273, and the through hole 273 is communicated with the enclosing area of the third annular sealing part 272, so that the enclosing area of the third annular sealing part 272 forms an acoustic cavity 274; the bottom of the second housing 230 is provided with a flare 246, the flare 246 facing the acoustic chamber 274.

Specifically, referring to fig. 8 and 9, the upper end of the third bracket 270 has an inner cavity 271, the inner cavity 271 is used for installing the speaker 320, the bottom is provided with a third annular sealing portion 272, the through hole 273 is located in an area surrounded by the third annular sealing portion 272 at the bottom of the third bracket 270, the sound emitting direction of the speaker 320 is towards the through hole 273 when installed, sound waves enter the area surrounded by the third annular sealing portion 272 through the through hole 273, and the area surrounded by the third annular sealing portion 272 can form an acoustic cavity 274, so that a better sound effect is obtained.

Referring to fig. 6 and 12, a second annular sealing portion 244 is disposed at an inner bottom of the second housing 230, and a flare hole 246 is further disposed in an area surrounded by the second annular sealing portion 244 in the second housing 230, wherein the second annular sealing portion 244 is adapted to the third annular sealing portion 272, a second sealing ring 275 is disposed between the second annular sealing portion 244 and the third annular sealing portion 272, and the second sealing ring 275 can play a role in sealing and waterproofing. In addition, when the speaker 320 is installed, the waterproof membrane 276 may be disposed between the speaker 320 and the bottom of the inner cavity 271, so that even if water enters the sound cavity 274 from the speaker hole 246, the second seal 275 and the waterproof membrane 276 can restrict water to the sound cavity 274, and do not further flow inward, thereby achieving a good waterproof effect.

As shown in fig. 8, 9 and 11, in the embodiment of the present application, the bottom of the third bracket 270 is further provided with an annular protrusion 277, the diameter of the annular protrusion 277 is greater than that of the third annular sealing portion 272, and a first annular clamping groove 278 is formed between the third annular sealing portion 272 and the annular protrusion 277; the second annular seal 244 is disposed within the first annular clamping groove 278. Wherein, annular protrusion 277 is coaxial with third annular seal 272, and annular protrusion 277 has a diameter greater than third annular seal 272, and the particular arrangement of annular protrusion 277 between radial and third annular seal 272 is adapted to second annular seal 244, so that first annular groove 278 formed between annular protrusion 277 and the third annular seal can play a guiding and positioning role.

As shown in fig. 4, 8 and 11, in the embodiment of the present application, the bottom of the first bracket 250 is provided with a plurality of third buckles 255, and the outer side wall of the third bracket 270 is provided with a plurality of third clamping grooves 279 adapted to the respective third buckles 255. Specifically, one end of the first bracket 250 at the bottom of the second housing 230 is provided with a plurality of third hooks 255, and a circumferential sidewall of the third bracket 270 is provided with a plurality of third clamping grooves 279, so that the third bracket 270 can be mounted at the bottom of the first bracket 250 through the third hooks 255 and the third clamping grooves 279. When in installation, the loudspeaker 320 can be firstly installed in the inner cavity 271 of the third bracket 270, then the third bracket 270 is installed at the bottom of the first bracket 250, and finally the loudspeaker is uniformly extended into the bottom of the second housing 230, so that the installation process is simple and convenient.

As shown in fig. 1, 2 and 3, in this embodiment, the brush holder 200 further includes a display screen, a perspective mirror 330 and a function key 350, the outer side wall of the first housing 210 is provided with a perspective mirror mounting hole 220 communicating with the inside, a display screen mounting slot 217 is provided at a position of the first bracket 250 corresponding to the perspective mirror mounting hole 220, the outer side wall of the second housing 230 is provided with a function key mounting hole 245 communicating with the inside, the perspective mirror 330 is disposed in the perspective mirror mounting hole 220, and the function key 350 is disposed in the function key mounting hole 245.

In the embodiment of the application, the driving shaft of the driving motor is a driving shaft with the frequency of 10HZ-35HZ and the swing angle of 5 DEG-15 deg. Specifically, a driving motor with the frequency of 10HZ-35HZ and the swinging angle of 5-15 degrees is adopted to drive the brush head 100 to perform the tooth brushing action with the frequency of 10HZ-35HZ and the swinging angle of 5-15 degrees, and the tooth brushing mode with lower frequency and larger swing can bring better tooth brushing experience for users (especially children and children). It should be noted that the swing in the embodiment of the present application refers to the swing amplitude of the brush head 100 in the quarter period.

According to the embodiment of the application, the first clamping portion 212 is arranged on the first connecting end 211 of the first shell 210, the adaptive clamping surface 232 is arranged on the side wall of the second connecting end 231 of the second shell 230, and when the first shell 210 is connected with the second shell 230, the first clamping portion 212 is matched with the clamping surface 232 and clamped, so that the contact area of the first shell 210 and the second shell 230 can be increased, and the connection strength can be improved.

Finally, it should be noted that: the above examples are only specific embodiments of the present utility model, and are not intended to limit the scope of the present utility model, but it should be understood by those skilled in the art that the present utility model is not limited thereto, and that the present utility model is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Through the above description, the embodiments of the present application at least provide the following technical solutions, but are not limited thereto:

1. an electric toothbrush, comprising:

a brush head;

2. The electric toothbrush according to claim 1, wherein a height difference is formed between the engagement surface and the outer side wall of the second housing, and the height difference is formed from the outer side wall of the second housing into the second housing; the clamping surface extends to the end face of the second connecting end; the first clamping part is arranged in a height difference area between the clamping surface and the outer side wall of the second shell.

3. The electric toothbrush according to claim 1 or 2, wherein the clamping surface is an arc surface, the clamping surface is coaxial with the second shell, and the radian of the clamping surface is less than 360 degrees;

4. The electric toothbrush according to any one of claims 1 to 3, wherein a wall thickness of the first engaging portion is the same as the height difference.

5. The electric toothbrush according to claims 1-4, wherein a first limit groove is formed in a difference surface between the clamping surface and the outer side wall of the second shell, and a first limit block matched with the first limit groove is arranged on the first clamping portion.

6. The electric toothbrush according to any one of claims 1 to 5, wherein one of the inner side wall of the first engaging portion and the engaging surface is provided with a first catch, and the other is provided with a first catch groove adapted to the first catch.

7. The electric toothbrush according to any one of claims 1 to 6, wherein a glue groove is provided on an inner side wall of the first clamping portion and/or the clamping surface.

8. The electric toothbrush according to any one of claims 1 to 7, wherein the joint surface is provided with ventilation holes communicated with the inside of the second shell.

9. The electric toothbrush according to any one of claims 1 to 8, wherein the second connecting end is provided with a first annular sealing part, the first annular sealing part extends into the first shell from the first connecting end, and the outer side wall of the first annular sealing part is abutted with the inner side wall of the first shell;

and/or a first sealing groove is formed in the inner side wall of the first shell, which is in butt joint with the outer side wall of the first annular sealing part, and a first sealing ring is arranged in the first sealing groove.

10. The electric toothbrush according to any one of claims 1 to 9, wherein an outer side wall of the first annular seal portion and the engagement surface are located on the same circular arc surface.

11. The electric toothbrush according to any one of claims 1-10, wherein the second clamping portion comprises a plurality of second buckles, the second buckles are arranged on one side, away from the clamping face, of the first annular sealing portion, and a plurality of second clamping grooves matched with the second buckles are formed in the inner side wall of the first shell.

12. The electric toothbrush according to any one of claims 1-11, wherein the first connecting end is provided with a first bulge on the outer side wall of one side far away from the first clamping part, and the outer side surface of the first bulge is in smooth connection with the outer side wall of the first shell;

the first protrusion and the second protrusion are symmetrical along a combination surface of the first connection end and the second connection end in a transverse direction.

13. The electric toothbrush according to any one of claims 1-12, the handle further comprising a first bracket and a second bracket;

the second bracket covers the driving motor installation position.

14. The electric toothbrush according to claim 1-13, wherein a second annular seal portion is provided at an inner bottom of the second housing;

15. The electric toothbrush according to any one of claims 1 to 14, wherein an annular protrusion is further provided at the bottom of the third support, the diameter of the annular protrusion is larger than the diameter of the third annular sealing portion, and a first annular clamping groove is formed between the third annular sealing portion and the annular protrusion;

16. The electric toothbrush according to any one of claims 1-15, wherein a plurality of third buckles are arranged at the bottom of the first bracket, and a plurality of third clamping grooves matched with the third buckles are formed in the outer side wall of the third bracket.

17. The electric toothbrush according to any one of claims 1 to 16, wherein the brush holder further comprises a display screen and a perspective mirror, a perspective mirror mounting hole is formed in the outer side wall of the first housing and is communicated with the interior, a display screen mounting groove is formed in a position, corresponding to the perspective mirror mounting hole, of the first bracket, the perspective mirror is arranged in the perspective mirror mounting hole, and the display screen is arranged in the display screen mounting groove.

18. The electric toothbrush according to any one of claims 1 to 17, wherein the handle further comprises a function key, a function key mounting hole communicated with the inside is formed in the outer side wall of the second housing, and the function key is arranged in the function key mounting hole.

19. The electric toothbrush according to any one of claims 1 to 18, wherein the drive shaft of the drive motor is a drive shaft having a frequency of 10HZ to 35HZ and a swing angle of 5 ° to 15 °.

Claims

1. An electric toothbrush, comprising:

a brush head;

2. The electric toothbrush of claim 1, wherein the engagement surface has a height differential from an outer side wall of the second housing, and wherein the height differential is formed from the outer side wall of the second housing into the second housing; the clamping surface extends to the end face of the second connecting end; the first clamping part is arranged in a height difference area between the clamping surface and the outer side wall of the second shell.

3. The electric toothbrush according to claim 1 or 2, wherein the clamping surface is an arc surface, and the clamping surface is coaxial with the second housing, and the radian of the clamping surface is less than 360 degrees;

4. The electric toothbrush of claim 2, wherein the wall thickness of the first snap-fit portion is the same as the height differential.

5. The electric toothbrush according to claim 2, wherein a first limit groove is formed in a difference surface between the clamping surface and the outer side wall of the second shell, and a first limit block matched with the first limit groove is arranged on the first clamping portion.

6. The electric toothbrush according to claim 1, wherein one of the inner sidewall of the first engaging portion and the engaging surface is provided with a first catch, and the other is provided with a first catch groove adapted to the first catch.

7. The electric toothbrush according to claim 1, wherein the inner side wall of the first clamping part and/or the clamping surface is/are provided with a glue groove.

8. The electric toothbrush according to claim 1, wherein the engaging surface is provided with ventilation holes communicating with the inside of the second housing.

9. The electric toothbrush according to claim 1 wherein the second connection end is provided with a first annular seal extending from the first connection end into the first housing, an outer sidewall of the first annular seal abutting an inner sidewall of the first housing;

10. The electric toothbrush according to claim 9 wherein the outer sidewall of the first annular seal is on the same arcuate surface as the snap-fit surface.

11. The electric toothbrush according to claim 9, wherein the second clamping portion comprises a plurality of second buckles, the second buckles are arranged on one side of the first annular sealing portion away from the clamping face, and a plurality of second clamping grooves matched with the second buckles are formed in the inner side wall of the first shell.

12. The electric toothbrush according to claim 3, wherein the first connecting end is provided with a first protrusion on an outer side wall of one side far away from the first clamping part, and an outer side surface of the first protrusion is in smooth connection with an outer side wall of the first shell;

13. The electric toothbrush of claim 1, wherein the handle further comprises a first bracket and a second bracket;

The second bracket covers the driving motor installation position.

14. The electric toothbrush according to claim 13, wherein an inner bottom of the second housing is provided with a second annular seal;

15. The electric toothbrush according to claim 14, wherein the bottom of the third bracket is further provided with an annular protrusion, the diameter of the annular protrusion is larger than the diameter of the third annular sealing part, and a first annular clamping groove is formed between the third annular sealing part and the annular protrusion;

16. The electric toothbrush according to claim 14, wherein a plurality of third buckles are provided at the bottom of the first bracket, and a plurality of third clamping grooves adapted to the plurality of third buckles are provided at the outer side wall of the third bracket.

17. The electric toothbrush according to claim 14, wherein the handle further comprises a display screen and a perspective mirror, a perspective mirror mounting hole is formed in the outer side wall of the first housing and is communicated with the interior, a display screen mounting groove is formed in a position, corresponding to the perspective mirror mounting hole, of the first support, the perspective mirror is arranged in the perspective mirror mounting hole, and the display screen is arranged in the display screen mounting groove.

18. The electric toothbrush according to claim 1, wherein the handle further comprises a function key, a function key mounting hole communicating with the inside is formed in the outer side wall of the second housing, and the function key is arranged in the function key mounting hole.

19. The electric toothbrush according to claim 1 or 2, characterized in that the drive shaft of the drive motor is a drive shaft having a frequency of 10HZ-35HZ and a swing angle of 5 ° -15 °.