CN116135175A - an electric toothbrush - Google Patents

Abstract

The invention discloses an electric toothbrush, comprising: a brush head; a brush handle, the brush handle includes a first shell and a second shell, the first shell has a first connection end, and the second shell It has a second connecting end, the first connecting end is provided with a first clamping part, and the second housing is provided with a clamping part adapted to the first clamping part on the outer wall of the second connecting end. The first clamping part covers the clamping surface and is clamped with the clamping surface, and the second connecting end is provided with a second clamping part, and the second clamping part is clamped connected to the inner wall of the first housing. In the embodiment of the present application, by providing a first clamping part on the first connecting end of the first housing and providing an adapted clamping surface on the side wall of the second connecting end of the second housing, the first housing and When the second housing is connected, the first clamping part fits and engages with the clamping surface, which can increase the contact area between the first housing and the second housing and improve the connection strength.

Description

an electric toothbrush

technical field

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

Background technique

At present, along with the development of society, people's living standard is getting higher and higher, and the use of electric toothbrush is also more and more general. At present, the functions of electric toothbrushes are becoming more and more complex, resulting in more internal components, and the handle of electric toothbrushes is generally thinner and longer for easy handling, which makes it difficult to install components. In order to facilitate installation, most of the brush handles on the market are currently designed in two sections. After the internal components are installed, the two sections of the brush handle are connected, thereby reducing the difficulty of installing internal components.

However, most of the current two-section brush handles are combined only for the cross-sections of the two brush handles, or a small number of buckles. In this structure, the joint area of the two-section brush handles is small and the connection strength is low.

The above content is only used to assist in understanding the technical solution of the present invention, and does not mean that the above content is admitted as prior art.

Contents of the invention

The main purpose of the present invention is to provide an electric toothbrush, aiming to solve the problem of low connection strength of the two-section brush handle in the background art.

To achieve the above object, the invention provides an electric toothbrush, comprising:

brush head;

A brush handle, the brush handle includes a first housing and a second housing, the first housing has a first connection end, the second housing has a second connection end, and the first connection end is provided with The first clamping part, the second housing is provided with a clamping surface adapted to the first clamping part on the outer wall of the second connection end, and the first clamping part covers the clamping part The second connection end is provided with a second clamping portion, and the second clamping portion is clamped on the inner side wall of the first housing;

A driving motor and a battery, the driving motor and the battery are both arranged in the brush handle, the driving shaft of the driving motor protrudes from the first housing and is connected with the brush head, the battery and the The drive motor is electrically connected.

In the embodiment of the present application, there is a height difference between the clamping surface and the outer side wall of the second housing, and the height difference extends from the outer side wall of the second housing to the inside of the second housing. Formed; the clamping surface extends to the end surface of the second connection end; the first clamping portion is disposed in a height difference region between the clamping surface and the outer wall of the second housing.

In the embodiment of the present application, the clamping surface is a circular arc surface coaxial with the second housing, and the curvature of the clamping surface is less than 360 degrees;

The first clamping portion is an arc-shaped sheet structure, and the first clamping portion is coaxial with the first casing.

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

In the embodiment of the present application, a first limiting groove is provided on the gap between the clamping surface and the outer wall of the second housing, and the first clamping part is provided with a A first limit block adapted to the limit groove.

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

In the embodiment of the present application, a glue groove is provided on the inner wall of the first clamping part and/or on the clamping surface.

In the embodiment of the present application, a ventilation hole communicating with the inside of the second housing is provided on the clamping surface.

In the embodiment of the present application, the second connecting end is provided with a first annular sealing portion, and the first annular sealing portion protrudes into the first casing from the first connecting end, and the first annular sealing portion The outer side wall of the part abuts against the inner side wall of the first housing;

A first sealing groove is provided on the outer wall of the first annular sealing part, and/or the inner wall of the first housing abutting against the outer wall of the first annular sealing part. A first sealing ring is provided.

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

In the embodiment of the present application, the first connection end is provided with a first protrusion on the outer side wall away from the first locking part, and the outer side of the first protrusion is in contact with the first shell. The outer wall of the body is smoothly connected;

The second connecting end is provided with a second protrusion on the outer side wall away from the clamping surface, and the outer side of the second protrusion is smoothly connected with the outer side wall of the second housing;

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

In the embodiment of the present application, the second clamping part includes a plurality of second clamps, and the multiple second clamps are arranged on the side of the first annular sealing part away from the clamping surface, so The inner wall of the first housing is provided with a plurality of second slots adapted to the plurality of second buckles.

In the embodiment of the present application, the brush handle further includes a first bracket and a second bracket;

The first bracket is located in the first housing and the second housing, and the first bracket is provided with a drive motor installation position and a battery installation position;

The inner side wall of the first housing is provided with a plurality of installation grooves, and the first bracket is provided with a plurality of first guide rails adapted to the plurality of installation grooves;

A plurality of guide grooves are provided on the inner side wall of the second housing, and a plurality of second guide rails corresponding to the plurality of guide grooves are provided on the first bracket;

The second bracket is covered on the installation position of the drive motor.

In the embodiment of the present application, the inner bottom of the second housing is provided with a second annular sealing part;

The brush handle also includes a third bracket, the bottom of the third bracket is provided with a third annular sealing part adapted to the second annular sealing part, the second annular sealing part and the three annular sealing parts There is a second sealing ring between them;

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

A horn hole is provided at the bottom of the second housing, and the horn hole communicates with the sound cavity.

In the embodiment of the present application, the bottom of the third bracket is further provided with an annular protrusion, and the diameter of the annular protrusion is larger than the diameter of the third annular sealing part, and the third annular sealing part and the annular A first annular locking groove is formed between the protrusions;

The second annular sealing part is arranged in the first annular locking groove.

In the embodiment of the present application, the bottom of the first bracket is provided with a plurality of third buckles, and the outer wall of the third bracket is provided with a plurality of third buckles adapted to the plurality of third buckles. groove.

In the embodiment of the present application, the brush handle further includes a display screen and a see-through mirror, a see-through mirror mounting hole communicating with the inside is provided on the outer wall of the first housing, and the first bracket is installed with the see-through mirror A display screen installation groove is provided at a position corresponding to the hole, the see-through mirror is arranged in the see-through mirror installation hole, and the display screen is arranged in the display screen installation groove.

In the embodiment of the present application, the brush handle further includes a function key, and the outer wall of the second housing is provided with a function key installation hole communicating with the inside, and the function key is arranged in the function key installation hole.

In the embodiment of the present application, the drive shaft of the drive motor is a drive shaft with a frequency of 10 Hz-35 Hz and a swing angle of 5°-15°.

In the embodiment of the present application, by providing a first clamping part on the first connection end of the first housing, and providing an adapted clamping surface on the side wall of the second connection end of the second housing, the first housing and When the second housing is connected, the first clamping part fits and engages with the clamping surface, which can increase the contact area between the first housing and the second housing and improve the connection strength.

Description of drawings

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

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

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

4 is a schematic structural view of a first bracket, a second bracket, and a third bracket of an electric toothbrush according to an embodiment of the present application;

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

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

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

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

9 is a schematic structural view of a third bracket 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 area B in Fig. 10;

FIG. 12 is an enlarged view of area A in FIG. 7 .

Reference numerals: 100-brush head, 200-brush handle, 210-first housing, 211-first connecting end, 212-first clamping part, 213-first card slot, 214-second card slot, 215-the first limit block, 216-the first protrusion, 217-the installation groove, 218-the second annular slot, 219-the second limit groove, 220-the perspective mirror mounting hole, 230-the second housing, 231-second connection end, 232-clamping surface, 233-second clamping part, 234-first buckle, 235-second buckle, 236-breaking surface, 237-first limiting groove, 238 -Glue groove, 239-Breath hole, 240-First annular sealing part, 241-First sealing groove, 242-Second protrusion, 243-Guide groove, 244-Second annular sealing part, 245-Function button installation hole , 246-horn hole, 250-the first bracket, 251-the first guide rail, 252-the second guide rail, 253-the first arc-shaped protrusion, 254-the second limit block, 255-the third buckle, 256- Drive motor installation position, 257-battery installation position, 260-second bracket, 261-second arc-shaped protrusion, 270-third bracket, 271-inner concave cavity, 272-third annular sealing part, 273-through hole , 274-acoustic cavity, 275-second sealing ring, 276-waterproof membrane, 277-annular protrusion, 278-first annular slot, 279-third slot, 300-drive motor, 310-battery, 320-speaker , 330-perspective mirror, 350-function keys.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiment of the present application, the directional indications are only used to explain the position in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes, and cannot be interpreted as indications or hints Its relative importance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present application.

As shown in Figure 1, this exemplary embodiment proposes an electric toothbrush, comprising:

brush head 100;

The brush handle 200, the brush handle 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 set There is a first clamping portion 212, and the second housing 230 is provided with a clamping surface 232 on the outer wall of the second connection end 231 that is compatible with the first clamping portion 212, and the first clamping portion 212 covers the clamping surface 232 and clamped with the clamping surface 232, the second connecting end 231 is provided with a second clamping portion 233, and the second clamping portion 233 is clamped on the inner side wall of the first housing 210;

The driving motor 300 and the battery 310 are both arranged in the brush handle 200. The driving shaft of the driving motor 300 protrudes from the first housing 210 and is connected to the brush head 100. The battery is electrically connected to the driving motor.

In the embodiment of the present application, the brush handle 200 is roughly in the shape of a cylinder, and is composed of a first shell 210 and a second shell 230. The first shell 210 and the second shell 230 are hollow inside to form an accommodating cavity. It is used to install components such as the drive motor 300, the battery 310, and the circuit board.

As shown in FIG. 2 and FIG. 3 , the first housing 210 has a first connecting end 211, the first connecting end 211 is provided with an opening communicating with the inside of the first housing 210, and the second housing 230 has a second connecting end 231, The second connecting 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 connecting end 211 and the second connecting end 231 .

Continuing to refer to FIG. 2 and FIG. 3 , wherein the first engaging portion 212 protrudes from the first connecting end 211 , and the outer wall of the second housing 230 is provided with an engaging surface 232 , and the first engaging portion 212 The inner wall is adapted to the clamping surface 232. For example, the inner wall of the first clamping portion 212 is contoured to the clamping surface 232, that is, the outline of the first clamping portion 212 is the same as that of the clamping surface 232, so that the first clamping portion The connecting portion 212 can just cover the engaging surface 232 . During installation, the inner wall of the first engaging portion 212 covers and abuts against the engaging surface 232 . In addition, the first buckle 234 can also be provided on one of the inner wall of the first clamping portion 212 and the clamping surface 232, and the first clamping groove 213 can be provided on the other. In the embodiment of the present application, A first locking groove 213 is provided on the inner side wall of the first locking part 212, and a first locking button 234 is provided on the locking surface 232. When the first locking part 212 covers and abuts on the locking surface 232, the second A buckle 234 fits and engages with the first slot 213 .

Continuing to refer to FIG. 2 and FIG. 3 , in the embodiment of the present application, the second buckle 233 may be a second buckle 235 , wherein the second buckle 235 protrudes from the second connecting end 231 , and the first housing 210 A corresponding second locking groove 214 is provided on the inner side wall of the housing, so that the second locking buckle 235 extends into the inside of the first housing 210 and engages with the second locking groove 214 during installation.

In the embodiment of the present application, a second buckle 235 is provided on the second connecting end 231 of the second housing 230, and a second locking groove 214 is provided on the inner wall of the first connecting end 211 of the first housing 210. The second buckle 235 and the second slot 214 can snap the first connection end 211 and the second connection end 231 together, in addition, the first connection portion 212 is also provided on the first connection end 211, and The first clamping part 212 protrudes from the end face of the first connecting end 211, and a clamping surface 232 is provided on the outer wall of the second connecting end 231. When the first connecting end 211 and the second connecting end 231 are connected, the first clamping The portion 212 covers the engaging surface 232 , and the inner sidewall of the first engaging portion 212 is engaged with the engaging surface 232 .

Generally speaking, for two-section brush handles, most of them are only connected by the transverse end faces of the two sections. In addition to the lateral end surface positions of the first connecting end 211 and the second connecting end 231, the contact position also includes the position where the inner side wall of the first engaging part 212 abuts against the engaging surface 232, and is arranged on the outer side wall of the brush handle 200. Compared with the lateral end faces of the first connecting end 211 and the second connecting end 231, the clamping surface 232 on the upper surface can greatly increase the contact area of the first shell 210 and the second shell 230, thereby improving the height of the first shell 210. and the connection strength of the second housing 230 .

As shown in FIG. 2 and FIG. 3 , in the embodiment of the present application, there is a height difference between the clamping surface 232 and the outer side wall of the second housing 230 , and the height difference is from the outer side wall of the second housing 230 to the second side wall. Formed in the housing 230 , the clamping surface 232 extends from 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 wall of the second housing 230 .

Specifically, when setting the clamping surface 232 , a height difference can be set from the end surface of the second connection end 231 toward the inside of the second housing 230 , so as to form the clamping surface 232 and a gap surface surrounding the clamping surface 232 236. The clamping surface 232 extends to the end surface of the second connecting end 231 , when the first connecting end 211 and the second connecting end 231 are connected, the first clamping portion 212 can directly face the second housing 230 from the end of the second connecting end 231 The other end of the first engaging part 212 is inserted into the height difference region formed between the engaging surface 232 and the outer wall of the second housing 230, so that the inner wall of the first engaging part 212 abuts against the engaging surface 232, and the engaging surface 232 The gap surface 236 between the outer wall of the second housing 230 can also limit the first engaging portion 212 to avoid relative rotation between the first housing 210 and the second housing 230 . In addition, the clamping surface 232 communicates with the first connecting end 211, so the position of the clamping surface 232 on the end surface of the second connecting end 231 will inevitably form a socket, and this socket can also play the role of guiding and positioning, which is convenient for the first shell The assembly between the body 210 and the second housing 230.

Continuing to refer to FIG. 3, the clamping surface 232 is an arc surface, coaxial with the second housing 230, and the arc of the clamping surface 232 is less than 360 degrees; the first clamping portion 212 is an arc-shaped sheet structure, and It is coaxial with the first casing 210 . Both the first housing 210 and the second housing 230 are roughly cylindrical, and the outer walls of the first housing 210 and the second housing 230 are arc-shaped surfaces. When the engaging surface 232 is provided, it can be set as The arc surface coaxial with the second housing 230, the arc of the clamping surface is less than 360°, that is, the clamping surface 232 does not penetrate in the circumferential direction of the second housing 230, and the corresponding first clamping part 212 can also be provided It is an arc-shaped sheet structure coaxial with the first shell 210 , and the first clamping part 212 of the arc-shaped sheet structure fits on the arc-shaped clamping surface 232 during assembly, which is convenient for assembly and has high connection strength.

As shown in FIG. 1 , FIG. 2 , and FIG. 3 , in the embodiment of the present application, the wall thickness of the first engaging portion 212 is the same as the height difference between the engaging surface 232 and the outer wall of the second housing 230 . The thickness of the first clamping part 212 is the same as the height difference between the clamping surface 232 and the outer wall of the second housing 230, and the first clamping part 212 and the clamping surface 232 are coaxial, then the first clamping After the part 212 is assembled on the clamping surface 232, there will be no gap between the first housing 210 and the second housing 230, so as to avoid discomfort to the holding hand.

As shown in Fig. 2 and Fig. 3, in the embodiment of the present application, a first limiting groove 237 is provided on the gap surface 236 between the clamping surface 232 and the outer wall of the second housing 230, and the first clamping part 212 is provided with a first limiting block 215 adapted to the first limiting groove 237 .

Please refer to FIG. 3 , the outer side wall of the second housing 230 is provided with a height difference inward, and the engaging surface 232 extends to the end surface of the second connecting end 231 , then the engaging surface 232 is connected to the end surface of the second connecting end 230 . There must be a gap surface 236 around one side. It should be noted that the clamping surface 232 may or may not penetrate the second housing 230. FIG. 3 shows a schematic diagram of the structure without penetration. The gap surface is roughly U-shaped, and the first stop groove 237 is set on the gap surface 236, and the first stop block 215 is set at the position corresponding to the first clamping part 212, so that when assembling , the first limiting block 215 on the first engaging portion 212 can be inserted into the first limiting groove 237 on the differential surface 236 , so that the first engaging portion 212 can be prevented from turning outward or tilting up. In addition, the gap surface 236 in FIG. 3 is roughly U-shaped, and the first limiting groove 237 is arranged on the two vertical gap surfaces 236, but in other embodiments, it can also be placed on the horizontal gap surface. 236 is provided with a first limiting slot 237 , and a corresponding first limiting block 215 is provided at a position corresponding to the first engaging portion 212 . In addition, in other embodiments, the gap surface 236 can also be in other shapes, such as V-shaped, semicircular, etc., the embodiment of the present application does not limit the shape of the gap surface 236, and the first limiting groove 237 is in the gap The specific location on the surface 236. In addition, in another embodiment, when the clamping surface 232 runs through the second housing 230, the broken surface is only a circle of torus, and there is no vertical broken surface similar to that in the structure shown in FIG. The difference surface 236, at this time, the first limiting groove 237 can be arranged on the annular surface.

As shown in FIG. 3 , in the embodiment of the present application, a glue groove 238 is provided on the inner wall of the first engaging portion 212 and/or the engaging surface 232 . Specifically, a glue groove 238 may be provided on the clamping surface 232, or a glue groove 238 may be provided on the inner side wall of the first clamping portion 212, or a glue groove 238 may be provided on both, the first housing 210 and the second housing 210 Before the second housing 230 is assembled, glue is applied on the glue groove 238, and then the first housing 210 and the second housing 230 are connected. After the glue solidifies, the first housing 210 and the second housing 230 can be added. The connection strength between them. In addition, by setting the glue groove 238 and filling the glue groove 238 with glue, it can also play a sealing role. It should be noted that the specific path of the glue groove 238 in FIG. 3 is U-shaped. In other embodiments, the specific path of the glue groove 238 can also be in other shapes. The embodiment of the present application does not limit the path of the glue groove 238 .

As shown in FIG. 3 , in the embodiment of the present application, the engaging surface 232 is provided with a vent hole 239 communicating with the inside of the second housing 230 . The brush handle 200 generally has a waterproof effect, that is, the airtightness of the brush handle 200 is good. When the electric toothbrush is working, the battery and circuit heat will cause the internal air pressure of the brush handle 200 to increase. If the internal and external air pressure is not balanced in time, it will affect the use Effect. In the embodiment of the present application, a ventilation hole 239 is provided at the clamping surface 232. When the internal air pressure of the brush handle 200 increases, the internal gas can be discharged along the tiny gap between the clamping surface 232 and the first clamping part 212, thereby avoiding The air pressure inside the handle 200 increases.

As shown in FIGS. 2 and 3 , in the embodiment of the present application, the second connecting end 231 is provided with a first annular sealing portion 240 , and the first annular sealing portion 240 extends from the first connecting end 211 into the first housing 210 , the outer wall of the first annular sealing portion 240 abuts against the inner wall of the first housing 210; the outer wall of the first annular sealing portion 240, and/or, the outer wall of the first housing 210 and the first annular sealing portion 240 A first sealing groove 241 is formed on the abutting inner wall, and a first sealing ring is disposed in the first sealing groove 241 .

Specifically, the first annular sealing portion 240 is obtained by extending the outer wall of the second housing 230 from the second connecting end 231 , and the wall thickness of the first annular sealing portion 240 can be set to be smaller than the wall thickness 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 connecting end 231 can extend into the first housing 210 . After the first annular sealing portion 240 extends into the first housing 210 , it can cooperate with the first sealing ring and the inner wall of the first housing 210 to form a sealing structure. On the one hand, the first annular sealing part 240 can increase the contact area between the first housing 210 and the second housing 230, and improve the connection strength between the first housing 210 and the second housing 230; on the other hand, it can also Play the role of sealing. It should be noted that the first sealing groove 241 for accommodating the first sealing ring can be provided on the outer side wall of the first annular sealing part 240, or on the inner side wall of the first housing 210, or on the first housing Both the inner side wall of the body 210 and the outer side wall of the first annular sealing portion 240 are provided with a first sealing groove 241 .

As shown in FIG. 3 , in the embodiment of the present application, the outer wall of the first annular sealing portion 240 and the clamping surface 232 are located on the same arc surface. Setting the outer wall of the first annular sealing portion 240 to be coaxial with the clamping surface 232 can simplify the production process and reduce the production cost.

As shown in Fig. 1 and Fig. 2, in the embodiment of the present application, the first connecting end 211 is provided with a first protrusion 216 on the outer wall on the side away from the first clamping part 212, and the first protrusion 216 is connected to the first engaging part 212. The outer wall of a housing 210 is smoothly connected; the second connecting end 231 is provided with a second protrusion 242 on the outer wall away from the clamping surface 232, and the second protrusion 242 is connected to the outer wall of the second housing 230 Smooth connection; the first protrusion 216 and the second protrusion 242 are symmetrical along the joint plane of the first connection end 211 and the second connection end 231 in the transverse direction. Wherein, the first casing 210 and the second casing 230 are substantially cylindrical, and after they are assembled, they are still cylindrical, and they are easy to roll when placed on the table. In the embodiment of the present application, the provided first protrusion 216 and second protrusion 242 can prevent rolling. In addition, the first protrusion 216 and the second protrusion 242 are smoothly connected with the first housing 210 and the second housing 230 respectively, and the first protrusion 216 and the second protrusion 242 are mirror images of each other. The time can play an anti-slip effect, and the smooth connection will not cause discomfort to the hands. In addition, the first protrusion 216 and the second protrusion 242 can also serve as a reminder of the grip position.

As shown in FIGS. 2 and 3 , in the embodiment of the present application, the second clamping portion 233 includes a plurality of second clamps 235 , and the multiple second clamps 235 are arranged on the first annular sealing portion 240 away from the clamping surface. 232 , the inner wall of the first housing 210 is provided with a plurality of second locking grooves 214 adapted to the plurality of second buckles 235 . The second buckle 235 is arranged on the first annular sealing part 240. After the first annular sealing part 240 extends into the first housing 210, the second buckle 235 is engaged with the corresponding second locking groove 214, and the second buckle The buckle 235 is provided on the side of the first annular sealing portion 240 away from the clamping surface 232, and cooperates with the first buckle 234 on the clamping surface 232 to form a clamping structure around the brush handle 200, thereby having a higher connection. strength.

As shown in Fig. 4, Fig. 5, Fig. 6 and Fig. 7, in the embodiment of the present application, the brush handle 200 also includes a first bracket 250 and a second bracket 260; the first bracket 250 is located between the first housing 210 and the second Inside the housing 230, the first bracket 250 is provided with a driving motor mounting position 256 and a battery mounting position 257; A plurality of first guide rails 251 adapted to the installation groove 217; a plurality of guide grooves 243 are provided on the inner wall of the second housing 230, and a plurality of second guide rails 252 corresponding to the plurality of guide grooves 243 are provided on the first bracket 250 ; The second bracket 260 covers the drive motor installation position 256 .

In the embodiment of the present application, the upper end part of the first bracket 250 is located in the first housing 210, and the lower end part is located in the second housing 230, that is, the first housing 210 and the second housing 230 accommodate the first bracket together. 250, the first bracket 250 is provided with first guide rails 251 on both sides of the upper end, and second guide rails 252 are respectively provided on both sides of the lower end. In the groove 217 , a guide groove 243 is provided at a position corresponding to the second guide rail 252 on the inner wall of the second casing 230 .

In addition, the upper end of the first housing 210 is provided with an opening for the drive shaft of the driving motor to protrude and connect with the brush head 100 , and the inner top wall of the first housing 210 is also provided with a second annular locking groove 218 , the upper end of the first bracket 250 is provided with a first arc-shaped protrusion 253, and the upper end of the second bracket 260 is provided with a second arc-shaped protrusion 261. After the first arc-shaped protrusion 253 and the second arc-shaped protrusion 261 are combined Adapt to the second annular groove 218, in addition, a sealing ring can also be set between the combined first arc-shaped protrusion 253 and second arc-shaped protrusion 261 and the second annular groove 218 to ensure better of tightness.

During assembly, the drive motor is located at the drive motor mounting position 256, and the second support 260 is covered on the drive motor, and connected with the first support 250 by screws, and then the first guide rail 251 of the first support 250 is installed along the The groove 217 is inserted into the first housing 210 .

In another embodiment, the end of the mounting groove 217 close to the first connecting end 211 is further provided with a second limiting groove 219, and the first guide rail 251 is provided with a second limiting block 254 adapted thereto. 251 and the mounting groove 217 are provided with an adapted second limiting groove 219 and a second limiting block 254 , which can facilitate the installation of the first bracket 250 in an appropriate position of the first housing 210 .

As shown in Fig. 4, Fig. 6, Fig. 8, Fig. 9, Fig. 10, and Fig. 11, in the embodiment of the present application, the inner bottom of the second housing 230 is provided with a second annular sealing portion 244; the brush handle 200 also includes The third bracket 270, the bottom of the third bracket 270 is provided with a third annular seal portion 272 that is compatible with the second annular seal portion 244, and a second seal is provided between the second annular seal portion 244 and the third annular seal portion 272. ring 275; the top of the third bracket 270 is provided with an inner concave cavity 271, and the bottom of the inner concave cavity 271 is provided with a through hole 273, and the through hole 273 communicates with the enclosed area of the third annular sealing part 272, so that the third annular sealing part The surrounding area of 272 forms an acoustic cavity 274 ; the bottom of the second housing 230 is provided with a horn hole 246 , and the horn hole 246 faces the acoustic cavity 274 .

Specifically, please refer to FIG. 8 and FIG. 9, the upper end of the third bracket 270 has an inner concave cavity 271, the inner concave cavity 271 is used to install the speaker 320, the bottom is provided with a third annular sealing part 272, and the through hole 273 is located in the third annular In the area enclosed by the sealing portion 272 at the bottom of the third bracket 270, the sounding direction of the loudspeaker 320 faces the through hole 273 when installed, and the sound wave enters the area enclosed by the third annular sealing portion 272 through the through hole 273, and the third annular sealing portion The area enclosed by 272 can form an acoustic cavity 274, thereby obtaining better sound effects.

Please refer to FIG. 6 and FIG. 12 , the inner bottom of the second housing 230 is provided with a second annular sealing portion 244 , and the second housing 230 is also provided with a horn hole 246 in the area enclosed by the second annular sealing portion 244 , wherein , the second annular sealing part 244 is adapted to the third annular sealing part 272, and a second sealing ring 275 is arranged between the second annular sealing part 244 and the third annular sealing part 272, and the second sealing ring 275 can play a role in sealing and waterproofing role. In addition, when the speaker 320 is installed, the waterproof membrane 276 can be set between the speaker 320 and the bottom of the concave cavity 271, so that even after water enters the acoustic cavity 274 from the speaker hole 246, the second sealing ring 275 and the waterproof membrane 276 can keep the The water is restricted in the acoustic cavity 274 and will not flow further inward, which can achieve a better waterproof effect.

As shown in Fig. 8, Fig. 9 and Fig. 11, in the embodiment of the present application, the bottom of the third bracket 270 is also provided with an annular protrusion 277, and the diameter of the annular protrusion 277 is larger than the diameter of the third annular sealing part 272, the second A first annular locking groove 278 is formed between the three annular sealing portions 272 and the annular protrusion 277 ; the second annular sealing portion 244 is disposed in the first annular locking groove 278 . Wherein, the annular protrusion 277 is coaxial with the third annular sealing portion 272, the diameter of the annular protrusion 277 is larger than that of the third annular sealing portion 272, and the specific setting of the annular protrusion 277 between the radial direction and the third annular sealing portion 272 is as follows: Adapted to the second annular seal portion 244 , the first annular locking groove 278 formed between the annular protrusion 277 and the third annular seal can play a guiding and positioning role.

As shown in Figure 4, Figure 8, and Figure 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 wall of the third bracket 270 is provided with each third buckle. 255 fit a plurality of third card slots 279. Specifically, one end of the first bracket 250 located at the bottom of the second housing 230 is provided with a plurality of third buckles 255, and the peripheral side wall of the third bracket 270 is provided with a plurality of third slots 279, so that the first The three buckles 255 and the third slot 279 can install the third bracket 270 on the bottom of the first bracket 250 . Then, when installing, the speaker 320 can be installed in the inner concave cavity 271 of the third bracket 270 first, then the third bracket 270 can be installed on the bottom of the first bracket 250, and finally extend into the bottom of the second housing 230 , the installation process is relatively simple and convenient.

As shown in Fig. 1, Fig. 2 and Fig. 3, in the embodiment of the present application, the brush handle 200 also includes a display screen, a perspective mirror 330, and function buttons 350, and the outer wall of the first housing 210 is provided with a perspective The mirror installation hole 220, the position corresponding to the first bracket 250 and the perspective mirror installation hole 220 is provided with a display screen installation groove 217, the outer side wall of the second housing 230 is provided with a function button installation hole 245 communicating with the inside, and the perspective mirror 330 is provided with In the perspective mirror installation hole 220 , the function button 350 is arranged in the function button installation hole 245 .

In the embodiment of the present application, the drive shaft of the drive motor 300 is a drive shaft with a frequency of 10 Hz-35 Hz and a swing angle of 5°-15°. Specifically, the drive motor 300 with a frequency of 10HZ-35HZ and a swing angle of 5°-15° is used to drive the brush head 100 to brush teeth at a frequency of 10HZ-35HZ and a swing angle of 5°-15°, which is relatively low. The teeth-brushing mode with higher frequency and larger swing can bring users (especially infants and children users) a better teeth-brushing experience. It should be noted that the swing amplitude in the embodiment of the present application refers to the swing amplitude of the brush head 100 within a quarter cycle.

In the embodiment of the present application, the first clamping part 212 is provided on the first connection end 211 of the first housing 210, and an adapted clamping surface is provided on the side wall of the second connection end 231 of the second housing 230. 232, when the first housing 210 and the second housing 230 are connected, the first clamping portion 212 fits and engages with the clamping surface 232, which can increase the contact area between the first housing 210 and the second housing 230, Improve connection strength.

Finally, it should be noted that: the above-described embodiments are only specific implementations of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting them, and the scope of protection of the present invention is not limited thereto, although referring to the foregoing The embodiment has described the present invention in detail, and those of ordinary skill in the art should understand that any person familiar with the technical field can still modify the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention Changes can be easily thought of, or equivalent replacements are made to some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of the present invention within the scope of protection. Therefore, the protection scope of the present invention should be based on 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:

brush head;

A brush handle, the brush handle includes a first housing and a second housing, the first housing has a first connection end, the second housing has a second connection end, and the first connection end is provided with The first clamping part, the second housing is provided with a clamping surface adapted to the first clamping part on the outer wall of the second connection end, and the first clamping part covers the clamping part The second connection end is provided with a second clamping portion, and the second clamping portion is clamped on the inner side wall of the first housing;

A driving motor and a battery, the driving motor and the battery are both arranged in the brush handle, the driving shaft of the driving motor protrudes from the first housing and is connected with the brush head, the battery and the The drive motor is electrically connected.

2. The electric toothbrush according to technical solution 1, there is a height difference between the clamping surface and the outer side wall of the second housing, and the height difference is from the outer side wall of the second housing to the Formed in the second housing; the clamping surface extends to the end surface of the second connection end; the first clamping part is set at the height difference between the clamping surface and the outer wall of the second housing within the area.

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

The first clamping portion is an arc-shaped sheet structure, and the first clamping portion is coaxial with the first casing.

4. The electric toothbrush according to any one of technical solutions 1-3, wherein the wall thickness of the first locking part is the same as the height difference.

5. The electric toothbrush according to the technical solution 1-4, a first limiting groove is provided on the breaking surface between the clamping surface and the outer wall of the second housing, and the first clamping part A first limiting block adapted to the first limiting slot is provided on the top.

6. The electric toothbrush according to any one of technical solutions 1-5, one of the inner wall of the first clamping part and the clamping surface is provided with a first buckle, and the other is provided with a The first card slot to which the first buckle fits.

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

8. The electric toothbrush according to any one of technical solutions 1-7, wherein the engaging surface is provided with a vent hole communicating with the inside of the second housing.

9. The electric toothbrush according to any one of technical solutions 1-8, the second connection end is provided with a first annular sealing part, and the first annular sealing part extends from the first connection end into the first In a housing, the outer wall of the first annular sealing part abuts against the inner wall of the first housing;

The outer wall of the first annular sealing part, and/or, the inner wall of the first housing abutting against the outer wall of the first annular sealing part is provided with a first sealing groove, and the first sealing groove A first sealing ring is arranged inside.

10. The electric toothbrush according to any one of technical solutions 1-9, wherein the outer wall of the first annular sealing part and the clamping surface are located on the same arc surface.

11. The electric toothbrush according to any one of technical solutions 1-10, the second buckle includes a plurality of second buckles, and the second buckles are arranged on the first annular sealing part away from the On one side of the clamping surface, the inner wall of the first housing is provided with a plurality of second clamping slots adapted to the multiple second clamping buckles.

12. According to the technical solution, the electric toothbrush according to any one of claims 1-11, the first connection end is provided with a first protrusion on the outer wall of the side away from the first clamping part, and the The outer surface of the first protrusion is smoothly connected with the outer wall of the first housing;

The second connecting end is provided with a second protrusion on the outer side wall away from the clamping surface, and the outer side of the second protrusion is smoothly connected with the outer side wall of the second housing;

The first protrusion and the second protrusion are symmetrical along the joint plane of the first connection end and the second connection end in the transverse direction.

13. The electric toothbrush according to any one of technical solutions 1-12, the handle also includes a first bracket and a second bracket;

The first bracket is located in the first housing and the second housing, and the first bracket is provided with a drive motor installation position and a battery installation position;

The inner side wall of the first housing is provided with a plurality of installation grooves, and the first bracket is provided with a plurality of first guide rails adapted to the plurality of installation grooves;

A plurality of guide grooves are provided on the inner side wall of the second housing, and a plurality of second guide rails corresponding to the plurality of guide grooves are provided on the first bracket;

The second bracket is covered on the installation position of the drive motor.

14. The electric toothbrush according to technical solution 1-13, the inner bottom of the second housing is provided with a second annular sealing part;

The brush handle also includes a third bracket, the bottom of the third bracket is provided with a third annular sealing part adapted to the second annular sealing part, the second annular sealing part and the three annular sealing parts There is a second sealing ring between them;

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

A horn hole is provided at the bottom of the second housing, and the horn hole communicates with the sound cavity.

15. The electric toothbrush according to any one of technical solutions 1-14, the bottom of the third bracket is further provided with an annular protrusion, and the diameter of the annular protrusion is larger than the diameter of the third annular sealing part, so A first annular locking groove is formed between the third annular sealing portion and the annular protrusion;

The second annular sealing part is arranged in the first annular locking groove.

16. The electric toothbrush according to any one of technical solutions 1-15, the bottom of the first bracket is provided with a plurality of third buckles, and the outer wall of the third bracket is provided with the plurality of third buckles. Multiple third card slots for snap fit.

17. The electric toothbrush according to any one of technical solutions 1-16, characterized in that, the brush handle also includes a display screen and a perspective mirror, and the outer wall of the first housing is provided with a perspective mirror that communicates with the interior. hole, the position corresponding to the first bracket and the perspective mirror mounting hole is provided with a display screen installation groove, the perspective mirror is arranged in the perspective mirror installation hole, and the display screen is arranged in the display screen installation groove Inside.

18. The electric toothbrush according to any one of technical solutions 1-17, the handle also includes function buttons, and the outer wall of the second housing is provided with a function button installation hole communicating with the inside, and the function button It is arranged in the installation hole of the function key.

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

Claims (10)

1. 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.

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;

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

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;

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 claim 9 wherein the outer sidewall of the first annular seal is on the same arcuate surface as the snap-fit surface.

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