阅读说明：本技术 一种电动牙刷 (Electric toothbrush ) 是由 沈代华 林俊宏 于 2021-07-28 设计创作，主要内容包括：本发明公开一种电动牙刷,包括刷头和手柄,所述手柄包括壳体、机芯、旋钮和顶盖,所述机芯的一端安装在所述壳体内,所述机芯的另一端外露于所述壳体与所述刷头连接,所述旋钮套装在所述机芯上,所述旋钮的一端被连接到所述壳体,所以旋钮的另一端连接到所述顶盖,所述顶盖与所述机芯可拆卸连接。本发明提供的电动牙刷,当顶盖从机芯上拆下时,旋钮可从手柄中取出清洗,以保持手柄整体的清洁干净,提高用户体验。(The invention discloses an electric toothbrush, which comprises a brush head and a handle, wherein the handle comprises a shell, a core, a knob and a top cover, one end of the core is arranged in the shell, the other end of the core is exposed out of the shell and connected with the brush head, the knob is sleeved on the core, one end of the knob is connected to the shell, the other end of the knob is connected to the top cover, and the top cover is detachably connected with the core. According to the electric toothbrush provided by the invention, when the top cover is detached from the machine core, the knob can be taken out of the handle for cleaning, so that the handle is kept clean integrally, and the user experience is improved.)

1. An electric toothbrush, includes brush head and handle, its characterized in that: the handle comprises a shell, a machine core, a knob and a top cover, one end of the machine core is installed in the shell, the other end of the machine core is exposed out of the shell and connected with the brush head, the knob is sleeved on the machine core, one end of the knob is connected to the shell, the other end of the knob is connected to the top cover, and the top cover is detachably connected with the machine core.

2. The electric toothbrush of claim 1, wherein: the top cap with be equipped with the connector on one in the core, the top cap with be equipped with connecting portion on another in the core, the top cap with the core passes through the connector with the cooperation of connecting portion can be dismantled and link together.

3. The electric toothbrush of claim 2, wherein: the connector is arranged on the machine core and comprises a boss arranged on the outer surface of the machine core; the connecting part is arranged on the top cover and comprises a connecting sleeve, the connecting sleeve is provided with a first mounting cavity, and the top cover is connected with the movement in the first mounting cavity; the connecting portion further includes a cam formed on an inner surface of the connecting sleeve, and the boss is in surface contact with an upper surface of the cam to axially retain the movement in the first mounting cavity.

4. The electric toothbrush of claim 3, wherein: the boss is provided with a first bump; the cam is provided with a first groove, and the first lug is nested in the first groove.

5. The electric toothbrush of claim 1, wherein: an annular groove used for installing the knob is formed between the shell and the movement, an annular bulge is correspondingly arranged on the knob, and the annular groove is matched with the annular bulge to connect the knob to the shell.

6. The powered toothbrush as defined in claim 5, wherein: a first sealing element is arranged between the movement and the shell.

7. The electric toothbrush of claim 1, wherein: and a second sealing element is arranged between the top cover and the knob.

8. The electric toothbrush of claim 1, wherein: the electric toothbrush comprises an adjusting piece, wherein the adjusting piece is arranged on the knob, at least part of the adjusting piece and the knob move synchronously, a control assembly is arranged on the core, the adjusting piece is electrically connected with the control assembly, and the knob drives the adjusting piece to move relative to the control assembly when rotating.

9. The powered toothbrush as defined in claim 8, wherein: the regulating part is a conducting strip, and the control assembly comprises conducting terminals arranged at intervals.

10. The powered toothbrush as defined in claim 9, wherein: the number of the conductive terminals is 4-10, and the conductive terminals are one of conductive pins, conductive columns, conductive contacts and conductive films.

Technical Field

The invention belongs to the technical field of personal care appliances, and particularly relates to an electric toothbrush with a detachable knob.

Background

An electric toothbrush is a personal care device which utilizes a high-speed vibrating movement to drive a brush head to rotate or vibrate so as to achieve the effect of cleaning teeth. The electric toothbrush generally comprises a plurality of cleaning modes to adapt to different oral health conditions of a user, the plurality of cleaning modes are circularly switched by pressing a key switch, when the user wants to switch to the cleaning mode selected last time, the user needs to switch for selection for a plurality of times in the next mode circular switching, and the flexibility of mode selection is poor. In addition, for preventing that water from getting into the core in the gap between button and the casing, the button is together for non-detachable fixed connection with the casing, and after long-time the use, the gap between button and the casing is remained easily and is had the dirt and be difficult for cleaning, and user experience is not good.

Disclosure of Invention

It is an object of the present invention to provide an electric toothbrush having a detachable knob which includes a knob having one end connected to a housing and the other end connected to a cap and fitted over a cartridge, the knob being restricted in its axial movement by the cap cooperating with the cartridge, the cap being detachably connected to the cartridge, the knob being removable from the handle for cleaning when the cap is detached from the cartridge.

The invention provides an electric toothbrush, which comprises a brush head and a handle, wherein the handle comprises a shell, a core, a knob and a top cover, one end of the core is arranged in the shell, the other end of the core is exposed out of the shell and connected with the brush head, the knob is sleeved on the core, one end of the knob is connected to the shell, the other end of the knob is connected to the top cover, and the top cover is detachably connected with the core.

Preferably, the top cap with be equipped with the connector on one of core, the top cap with be equipped with connecting portion on the other of core, the top cap with the core passes through the connector with the cooperation of connecting portion can be dismantled and link together.

Preferably, the machine core is provided with a connector, and the connector comprises a boss arranged on the outer surface of the machine core; the top cover is provided with a connecting part, the connecting part comprises a connecting sleeve, the connecting sleeve is provided with a first mounting cavity, and the top cover is connected with the machine core in the first mounting cavity; the connecting portion further includes a cam formed on an inner surface of the connecting sleeve, and the boss is in surface contact with an upper surface of the cam to axially retain the movement in the first mounting cavity.

Preferably, a first bump is arranged on the boss; the cam is provided with a first groove, and the first lug is nested in the first groove.

Preferably, an annular groove for mounting the knob is formed between the housing and the movement, the knob is correspondingly provided with an annular protrusion, and the annular groove and the annular protrusion are matched to connect the knob to the housing.

Preferably, the knob comprises a first step surface and a second step surface, the first step surface is abutted with the movement, and the second step surface is abutted with the shell.

Preferably, a first sealing member is arranged between the movement and the shell.

Preferably, a second sealing element is arranged between the top cover and the knob.

Preferably, the electric toothbrush comprises an adjusting part, the adjusting part is mounted on the knob, at least part of the adjusting part and the knob move synchronously, a control assembly is arranged on the movement, the adjusting part is electrically connected with the control assembly, and the knob drives the adjusting part to move relative to the control assembly when rotating.

Preferably, the adjusting part is a conductive sheet, and the control assembly comprises conductive terminals arranged at intervals.

Preferably, the number of the conductive terminals is 4-10, and the conductive terminals are one of conductive pins, conductive columns, conductive contacts and conductive films.

Preferably, the movement comprises a mounting bracket, a motor and a control assembly, the motor and the control assembly are mounted on the mounting bracket, the motor is provided with a conductor, the control assembly comprises a conductive part, and the motor can move relative to the mounting bracket so that the conductor and the conductive part have a connection state and a separation state.

According to the technical scheme, the electric toothbrush with the detachable knob comprises the knob, one end of the knob is connected to the shell, the other end of the knob is connected to the top cover and sleeved on the core, the knob is matched with the core through the top cover to limit axial movement of the knob, the top cover is detachably connected with the core, and when the top cover is detached from the core, the knob can be taken out of the handle to be cleaned, so that the handle is kept clean integrally, and user experience is improved. In addition, the knob is driven to move relative to the control assembly to switch modes when rotated, the knob can rotate in the forward direction or in the reverse direction, a user can switch to the last selected cleaning mode or the next selected cleaning mode at any time, and the flexibility of mode selection is improved; the knob is large in size and arranged around the machine core, so that a user can conveniently switch a proper cleaning mode according to different cleaning parts when the brush head is positioned in the oral cavity; the knob is used as a part of the appearance composition of the handle, and the knob and the shell together enable the appearance of the handle to have more selectivity and more aesthetic feeling. The electric toothbrush is also provided with a pressure prompting device consisting of a conductor and a conductive part, so that when excessive pressure is applied to teeth, a user is prompted to reduce strength to protect the teeth.

Drawings

The above-mentioned and other features and advantages of this disclosure, and the manner of attaining them, will become more apparent and the disclosure itself will be better understood by reference to the following description of non-limiting embodiments of the disclosure taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic view of an electric toothbrush handle provided by an embodiment of the present invention;

FIG. 2 is an exploded view of a powered toothbrush handle provided by an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an electric toothbrush handle provided by an embodiment of the present invention;

FIG. 4 is a further cross-sectional view of the electric toothbrush handle provided by the present embodiment;

FIG. 5 is an enlarged view of portion A of the electric toothbrush handle of FIG. 3;

FIG. 6 is an enlarged view of portion B of the electric toothbrush handle of FIG. 3;

FIG. 7 is an enlarged view of the portion C of the electric toothbrush handle of FIG. 4;

FIG. 8 is a schematic view of a knob in the handle of the electric toothbrush;

FIG. 9 is a schematic view of a cap in the handle of the electric toothbrush;

FIG. 10 is an enlarged view of portion D of the overcap shown in FIG. 9;

FIG. 11 is a schematic view of an adjustment in the handle of the electric toothbrush;

figure 12 is an exploded view of the cartridge in the handle of the power toothbrush;

fig. 13 is a schematic view of a motor in the movement;

figure 14 is a schematic view of a second carriage in the cartridge;

FIG. 15 is an enlarged view of section E of the second bracket shown in FIG. 14;

figure 16 is a schematic view of a third carriage in the cartridge;

FIG. 17 is a schematic view of an electric toothbrush provided by an embodiment of the present invention;

wherein, in the figures, the respective reference numerals:

100-a handle; 10-a housing; 11-an annular groove; 12-a key; 20-a movement; 21-a connector; 211-boss; 2111-first bump; 22-a mounting bracket; 221-a first scaffold; 2211-mounting holes; 222-a second support; 2221-a second mounting cavity; 2222-first via hole; 223-a third support; 2231-a third step surface; 224-a motor mount; 2241-a second projection; 225-an elastic member; 23-a power supply; 24-a motor; 241-a conductor; 25-a control component; 251 a conductive terminal; 252-a circuit board; 2521 — main circuit board; 2522-a mode circuit board; 253-a conductive portion; 30-a knob; 31-an annular projection; 32-a first step face; 33-a second step face; 34-a second through hole; 40-a top cover; 41-a connecting part; 411-a connecting sleeve; 4111-a first mounting cavity; 412-a cam; 4121-first groove; 42-a top cover housing; 50-a first seal; 51-a first sub-seal; 52-a second sub-seal; 60-a second seal; 70-an adjusting part; 71-a bump; 80-a third seal; 90-a charging assembly; 200-brush head.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features mentioned. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In addition, technical solutions between various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the scope of the disclosure of the present invention.

In the following description, suffixes such as "module", "part", "assembly", or "unit" are used only for convenience of description of the present invention, and have no specific meaning by themselves, and thus may be used mixedly.

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

As shown in fig. 1-17, the present invention provides a power toothbrush comprising a handle 100 and a head 200, the head 200 being removably connected to the handle 100. The handle 100 comprises a shell 10, a movement 20, a knob 30 and a top cover 40, wherein one end of the movement 20 is installed in the shell 10, the other end of the movement 20 is exposed out of the shell 10 and connected with the brush head 200, the knob 30 is sleeved on the movement 20, one end of the knob 30 is connected to the shell 10, the other end of the knob 30 is connected to the top cover 40, and the top cover 40 is detachably connected with the movement 20.

An annular groove 11 for mounting the knob 30 is formed between the housing 10 and the movement 20, the knob 30 is correspondingly provided with an annular projection 31, and the annular projection 31 cooperates with the annular groove 11 to connect the knob 30 to the housing 10. The knob 30 includes a first step surface 32 and a second step surface 33, the first step surface 32 abuts against the movement 20, and the second step surface 33 abuts against the housing 10 to restrict downward movement of the knob 30. A first seal 50 is provided between the movement 20 and the casing 10 to prevent water from entering the inside of the movement from the annular groove 11. The first sealing member 50 may include a first sub-sealing member 51 and a second sub-sealing member 52 to achieve double sealing and ensure a waterproof effect.

One of the top cover 40 and the movement 20 is provided with a connector 21, the other of the top cover 40 and the movement 20 is provided with a connecting part 41, and the top cover 40 and the movement 20 are detachably connected together through the matching of the connector 21 and the connecting part 41. When it is necessary to detach the knob 30 from the handle 100, the top cover 40 is rotated to separate the connecting portion 41 from the connecting head 21 to detach the top cover 40 from the handle 100, and then the knob 30 is taken out to be cleaned. When the cleaned knob 30 needs to be mounted on the handle 100, the knob 30 is firstly sleeved on the movement 20 and the lower end of the knob is abutted against the shell 10 and the movement 20, then the top cover 40 is connected to the movement 20 through the matching of the connector 21 and the connecting part 41, the upper end of the knob 30 is abutted against the top cover 40, so that the axial displacement of the knob 30 is limited, and the knob 30 is mounted on the handle 100. The knob 30 is sleeved on the movement 20 so as to limit the radial displacement of the knob 30, and the knob 30 can rotate around the circumference of the movement 20.

Preferably, the movement 20 is provided with a connector 21, and the connector 21 includes a boss 211 arranged on the outer surface of the movement 20; the top cover 40 is provided with a connecting part 41, the connecting part 41 comprises a connecting sleeve 411, the connecting sleeve 411 is provided with a first mounting cavity 4111, and the top cover 40 is connected with the movement 20 in the first mounting cavity 4111; the connecting portion 41 further includes a cam 412 formed on an inner surface of the connecting sleeve 411, and a lower surface of the boss 211 is in surface contact with an upper surface of the cam 412 to axially retain the movement 20 in the first mounting cavity 4111.

The bosses 211 may be plural and arranged on the movement 20 in a circumferentially spaced manner. In one embodiment, there are 3 bosses 211, and any two adjacent bosses 211 are separated by an included angle of 120 °. Of course, other separation angles may be utilized as desired. The number of the cams 412 corresponds to the number of the bosses 211, and the cams 412 are formed on the inner surface of the coupling sleeve 411. When the cap 40 is detachably coupled to the movement 20, the movement 20 enters the first mounting cavity 4111, and the cap 40 or the movement 20 is rotated until the boss 211 of the movement 20 comes into surface contact with the upper surface of the cam 412 to axially retain the movement 20 in the first mounting cavity 4111 to maintain the detachable coupling. The boss 211 is provided with a first bump 2111; cam 412 is provided with a first groove 4121, and first tab 2111 is nested in first groove 4121 when cap 40 is removably coupled to cartridge 20. The first protrusion 2111 cooperates with the first groove 4121 to provide an indication that the boss 211 is connected to the cam 412 in place, and at the same time, the boss 211 is prevented from being separated from the cam 412 in a natural state (i.e., when no force is applied), so as to ensure a stable and reliable connection structure between the top cover 40 and the movement 20.

In a preferred embodiment, a second seal 60 is provided between the cap 40 and the knob 30. Specifically, the top cover 40 includes a top cover housing 42, and the top cover housing 42, the connecting sleeve 411, and the cam 412 may be formed by one-time injection molding to ensure a stable and reliable structure. The second seal 60 is disposed between the top cover housing 42 and the connecting sleeve 411. Preferably, the second seal 60 is integrally formed with the top cover 40. The second sealing member 60 is made of soft rubber, and is used for preventing water from flowing into the movement from a gap between the top cover 40 and the knob 30. A third seal 80 is provided between the cap 40 and the cartridge 20 to prevent water from flowing into the cartridge from the gap between the cap 40 and the cartridge 20.

In a preferred embodiment, the electric toothbrush further comprises an adjusting member 70, the adjusting member 70 is mounted on the knob 30, the adjusting member 70 and the knob 30 can be connected in a snap-fit manner, or in other connection manners, and at least a portion of the adjusting member 70 can move synchronously with the knob 30. The movement 20 comprises a mounting bracket 22, a power supply 23, a motor 24 and a control assembly 25, wherein the power supply 23, the motor 24 and the control assembly 25 are mounted on the mounting bracket 22. The adjustment member 70 is electrically connected to the control assembly 25, and rotation of the knob 30 causes the adjustment member 70 to move relative to the control assembly 25. The adjusting member 70 may be a conductive sheet, and the control assembly 25 includes a conductive terminal 251 and a circuit board 252, the conductive terminal 251 being electrically connected to the circuit board 252. The number of the conductive terminals 251 may be 4-10, and the conductive terminals 251 are one of a conductive pin, a conductive column, a conductive contact, and a conductive film.

Specifically, the mounting bracket 22 includes a first bracket 221, a second bracket 222, a third bracket 223, and a motor bracket 224. The third support 223 is connected to the first support 221, the circuit board 252 may include a main circuit board 2521 and a mode circuit board 2522, the main circuit board 2521 is mounted on an outer surface of the first support 221, the mode circuit board 2522 is mounted on a third step surface 2231 of the third support 223, and the conductive terminals 251 are disposed on the mode circuit board 2522. The second bracket 222 is coupled to the first bracket 221 and forms a second mounting cavity 2221 for mounting the third bracket 223, the conductive terminals 251 and the mode circuit board 2522. The second bracket 222 is further provided with a first through hole 2222 for electrically connecting the adjusting member 70 and the conductive terminal 251. Specifically, the conductive terminal 251 is exposed out of the second mounting cavity 2221 of the second bracket 222 through the first through hole 2222, the knob 30 is provided with a second through hole 34, the adjusting member 70 is provided with a first protrusion 71, and the second protrusion 71 is in contact with the conductive terminal 251 through the second through hole 34. When the adjusting member 70 rotates with the knob 30, the second protrusions 71 contact different conductive terminals 251 to provide different electrical signals to the control assembly or communicate different circuits, so as to control the motor 24 to drive the brush head 200 to move in different cleaning modes. The connection head 21 is formed on the second bracket 222.

In a preferred embodiment, the motor bracket 224 is coupled to the first bracket 221 to secure the motor 24 to the mounting bracket 22. Specifically, the first bracket 221 is provided with two mounting holes 2211, the motor bracket 224 is correspondingly provided with two second protrusions 2241, and the mounting holes 2211 and the second protrusions 2241 are matched with each other to connect the motor bracket 224 to the first bracket 221. The second protrusions 2241 are rotatable within the mounting holes 2211 so that the motor support 224 can rotate about an axis passing between the second protrusions 2241, thereby rotating the motor 24 within the interior of the mounting support 22. The motor 24 is provided with a conductor 241, the control component 25 comprises a conductive part 253 arranged on the mounting bracket 22, and the motor 24 can move relative to the mounting bracket 22 to enable the conductor 241 and the conductive part 253 to have a connection state and a separation state. When the pressure applied to the toothbrush head 200 is too high, the motor 24 moves away from the conductive portion 253 to separate the conductor 241 from the conductive portion 253 and provide a corresponding electrical signal to the control assembly 25, and the control assembly 25 receives the electrical signal and controls the electric toothbrush to give a corresponding prompt to the user, wherein the prompt may be one or more of an indicator light, a sound, and a motor vibration, so as to remind the user to reduce the force when the excessive pressure is applied to the teeth to protect the teeth. The electric toothbrush further includes an elastic member 225 for providing elastic stress urging the conductor 241 to the conductive portion 253.

The electric toothbrush further includes a charging assembly 90 for charging the cartridge 20. The knob 30 can be used to switch the cleaning mode of the electric toothbrush and also to turn the electric toothbrush on/off at the same time. Or knob 30 is used only to switch the cleaning mode of the electric toothbrush which also includes a button 12 for turning the electric toothbrush on/off.

The technical scheme of the invention is that the electric toothbrush with the detachable knob 30 is provided, one end of the electric toothbrush is connected to the shell 10, the other end of the electric toothbrush is connected to the top cover 40 and sleeved on the knob 30 on the movement 20, the axial movement of the knob 30 is limited by the matching of the top cover 40 and the movement 20, the top cover 40 is detachably connected with the movement 20, and when the top cover 40 is detached from the handle 100, the knob 30 can be taken out of the handle 100 for cleaning, so that the overall cleanness of the handle 100 is kept, and the user experience is improved. In addition, the knob 30 is rotated to drive the adjusting part 70 to move relative to the control assembly 25 to switch the modes, the knob 30 can rotate in the forward direction or in the reverse direction, and a user can switch to the previous selected cleaning mode or the next selected cleaning mode at any time, so that the flexibility of mode selection is improved; the knob 30 has a large volume and is arranged around the movement 20, so that a user can conveniently switch a proper cleaning mode according to different cleaning parts when the brush head 200 is positioned in the oral cavity; the knob 30 is formed as a part of the outer appearance of the handle 100, and together with the housing 10, makes the outer appearance of the handle 100 more selective and more aesthetic. The present electric toothbrush is further provided with a pressure prompting device composed of a conductor 241 and a conductive part 253 to give a prompt to the user when excessive pressure is applied to the teeth, reminding the user to reduce strength to protect the teeth.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. It will be apparent to those skilled in the art that a number of simple derivations or substitutions can be made without departing from the inventive concept.