CN111759516A

CN111759516A - Electric toothbrush

Info

Publication number: CN111759516A
Application number: CN202010664320.2A
Authority: CN
Inventors: 程志波; 董聪昌
Original assignee: Payer Electronic Nursing Product Suzhou Co ltd
Current assignee: Payer Electronic Nursing Product Suzhou Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-10-13
Anticipated expiration: 2040-07-10
Also published as: CN111759516B

Abstract

The invention relates to an electric toothbrush, which comprises a toothbrush handle, a toothbrush head and a driver, wherein the toothbrush head comprises a brush rod, a toothbrush holder and bristles, the bristles comprise a plurality of bristle monomers, the bristle monomers are divided into a plurality of groups, each group is arranged side by side along the length direction of the toothbrush holder, and the plurality of groups of bristle monomers are distributed at intervals around the circumference of the toothbrush holder; the driver comprises a first driving unit for driving the brush rod to rotate around the axis of the driver and a second driving unit which synchronously moves with the brush rod and can drive the brush rod to linearly reciprocate along the length direction of the driver. The brush head synchronously makes linear reciprocating vibration in the rotating process, and is matched with a plurality of groups of brush hair monomers which are uniformly distributed in the circumferential direction, so that the tooth surface and the tooth gaps of teeth can be cleaned at 360 degrees without dead angles, dirt on the tooth surface and the tooth gaps can be better brushed out, and the tooth cleaning effect is greatly improved.

Description

Electric toothbrush

Technical Field

The invention belongs to the field of cleaning and nursing, and particularly relates to an electric toothbrush.

Background

At present, the electric toothbrush on the market comprises a toothbrush handle, a brush head and a driver which is arranged inside the toothbrush handle and used for moving the brush head, wherein the brush head comprises a brush rod, a brush holder and bristles, and the brushing end part of the bristles is exposed from one side of the brush holder.

In particular, the conventional motion mode of the brush head is linear vibration, and under the operation of the driver, the cleaning of the brush hair to the teeth is realized.

However, in the actual brushing process, the brushing mode is difficult to realize the complete cleaning of the tooth surface and the tooth gaps of the teeth, the cleaning dead angle is easy to occur, and the cleaning effect is poor.

Disclosure of Invention

The invention aims to provide an improved electric toothbrush.

In order to solve the technical problems, the invention adopts the following technical scheme:

an electric toothbrush comprises a toothbrush handle, a toothbrush head and a driver, wherein the toothbrush head comprises a brush rod, a toothbrush holder and bristles, the bristles comprise a plurality of bristle monomers, the bristle monomers are divided into a plurality of groups, each group is arranged side by side along the length direction of the toothbrush holder, and the plurality of groups of bristle monomers are distributed at intervals around the circumference of the toothbrush holder; the driver comprises a first driving unit for driving the brush rod to rotate around the axis of the driver and a second driving unit which synchronously moves with the brush rod and can drive the brush rod to linearly reciprocate along the length direction of the driver.

Preferably, the first drive unit comprises a drive shaft, a motor arranged in the toothbrush handle, a transmission assembly for drivingly connecting an output shaft of the motor to one end of the drive shaft, wherein the drive shaft is connected from the other end to the end of the brush bar remote from the bristles.

Furthermore, the driving shaft and the brush rod are detachably connected from the end part, and the center lines of the connected driving shaft and the brush rod are overlapped. The benefits of this arrangement are: so that the driving shaft and the brush rod can coaxially rotate, and the assembly is convenient.

Preferably, the drive shaft is arranged in parallel with the output shaft. This provides the benefit of facilitating the mounting of the drive assembly while further enabling the construction of a power toothbrush to be miniaturised.

According to a specific embodiment and preferred aspects of the present invention, the transmission assembly includes an output gear provided on the output shaft, a drive gear provided on the drive shaft, and a transmission gear drivingly connecting the output gear and the drive gear. In this case, on the one hand, a more accurate rotational output (known from the transmission ratio) is facilitated by the gear transmission; on the other hand, the required installation space is small, which is beneficial to the miniaturization of the electric toothbrush structure.

Specifically, the transmission gear is a multi-stage reduction gear which is meshed oppositely. The specific speed reduction ratio can be selected according to actual needs.

According to a further embodiment and preferred aspect of the invention, the second drive unit is arranged on the toothbrush handle and has a drive socket through which the other end of the drive shaft passes out of the cavity, a first mating module arranged on the drive socket, a second mating module fixed on the drive shaft and engaging with the first mating module, and an elastic member for maintaining a tendency of the second mating module to move in a direction of the first mating module, the drive shaft being arranged to move linearly with respect to the drive socket. Here, through the rotation of the second cooperation module with the synchronous pivoted of drive shaft for interlock or break away from between second cooperation module and the first cooperation module and top touch, and the deformation or the motion that resets of cooperation elastic component make the drive shaft can shake along self length direction is reciprocal.

Preferably, the first mating module and the second mating module are respectively provided with mating corrugated teeth on their mating end surfaces.

Preferably, the elastic component comprises a positioning part which is positioned in the cavity and sleeved on the driving shaft, and a spring which is sleeved on the periphery of the driving shaft and two end parts of which respectively abut against the positioning part and the driving seat.

In addition, the brush seat is cylindricly, and multiunit brush hair monomer is around cylindric circumference evenly distributed. The processing process of the brush head is very simple, convenient to implement and low in cost.

Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:

the brush head synchronously makes linear reciprocating vibration in the rotating process, and is matched with a plurality of groups of brush hair monomers which are uniformly distributed in the circumferential direction, so that the tooth surface and the tooth gaps of teeth can be cleaned at 360 degrees without dead angles, dirt on the tooth surface and the tooth gaps can be better brushed out, and the tooth cleaning effect is greatly improved.

Drawings

The invention is described in further detail below with reference to the following figures and specific examples:

FIG. 1 is a front schematic view of the electric toothbrush of the present invention;

FIG. 2 is a schematic view of the construction of the brush head of FIG. 1;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is an enlarged schematic view at A in FIG. 3;

in the drawings: 1. a toothbrush handle; 10. a handle sleeve; 11. a shell;

2. a brush head; 20. a brush bar; 21. a brush holder; 22. brushing; 220. a bristle unit;

3. a driver; 31. a first drive unit; 311. a drive shaft; 312. a motor; s, an output shaft; 313. a transmission assembly; a. an output gear; b. a drive gear; c. a transmission gear; 32. a second driving unit; 320. a driving seat; q, a cavity; 321. a first mating module; 322. a second mating module; d. a corrugated tooth; 323. an elastic component; e. a positioning part; h. a spring.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, 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," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1 to 3, the electric toothbrush of the present embodiment includes a toothbrush handle 1, a brush head 2, and a driver 3.

The toothbrush handle 1 comprises a handle sleeve 10 and a shell sleeve 11 detachably arranged on the handle sleeve 10, wherein the handle sleeve 10 is formed with an operation switch for controlling the operation of the driver 3.

The brush head 2 comprises a brush rod 20, a brush seat 21 and brush bristles 22, wherein the brush rod 20 is in a frustum shape, the brush seat 21 is in a cylindrical shape, and the brush seat 21 is fixed at the top of the frustum from one end part of the cylindrical shape.

The brush hair 22 includes many brush hair monomers 220, and many brush hair monomers 220 divide into the multiunit, and every group brush hair monomer sets up side by side along brush holder 21 length direction, and the multiunit brush hair monomer all with interval distribution round brush holder 21's circumference. The processing process of the brush head is very simple, convenient to implement and low in cost.

In this example, the driver 3 is arranged inside the grip sleeve 10 and the housing sleeve 11.

Specifically, the driver 3 includes a first driving unit 31 for driving the brush rod 20 to rotate around its own axis, and a second driving unit 32 which moves synchronously with the brush rod 20 and can drive the brush rod 20 to vibrate (move) linearly back and forth along its own length direction.

As shown in fig. 4, the first driving unit 31 includes a driving shaft 311, a motor 312 disposed in the toothbrush handle 1, and a transmission assembly 313 for drivingly connecting an output shaft s of the motor 312 to one end of the driving shaft 311.

Specifically, the driving shaft 311 is detachably connected to the end of the brush rod 20 away from the brush 22 from the other end, wherein the connected driving shaft 311 coincides with the center line of the brush rod 20. The benefits of this arrangement are: so that the drive shaft 311 and the brush bar 20 can rotate coaxially while also facilitating assembly.

In this example, the drive shaft 311 is disposed parallel to the output shaft s. This provides the benefit of facilitating the mounting of the drive assembly while further enabling the construction of a power toothbrush to be miniaturised.

In particular, the motor 312 is conventional and is concealed within the sleeve 10.

The transmission assembly 313 includes an output gear a provided on the output shaft s, a drive gear b provided on the drive shaft 311, and a transmission gear c drivingly connecting the output gear a and the drive gear b. In this case, on the one hand, a more accurate rotational output (known from the transmission ratio) is facilitated by the gear transmission; on the other hand, the required installation space is small, which is beneficial to the miniaturization of the electric toothbrush structure.

The transmission gear c is a multi-stage reduction gear which is meshed oppositely. The specific speed reduction ratio can be selected according to actual needs.

In this example, the second driving unit 32 is disposed on the housing 11 and includes a driving base 320 through which an end portion of the driving shaft 311 passes through the cavity q, a first mating block 321 disposed on the driving base 320, a second mating block 322 fixed to the driving shaft 311 and engaged with the first mating block 321, and an elastic member 323 for holding a tendency of the second mating block 322 to move toward the first mating block 321. Here, the rotation of the second mating module 322, which rotates synchronously with the driving shaft 311, causes the second mating module 322 to engage with or disengage from the top contact with the first mating module 321, and the driving shaft 311 can vibrate back and forth along its longitudinal direction in cooperation with the deformation or return motion of the elastic member 323.

Specifically, the first mating module 321 and the second mating module 322 have mating corrugated teeth d on their mating end surfaces, respectively.

The elastic component 323 comprises a positioning portion e located in the cavity q and fixed on the driving shaft 311, and a spring h sleeved on the periphery of the driving shaft 311 and having two end portions respectively abutting against the positioning portion e and the driving seat 320.

In addition, in order to facilitate the machining of the components, in this example, the first mating block 321 and the driving seat 320, and the second mating block 322 and the driving gear b are integrally formed, respectively.

In summary, the present embodiment has the following advantages:

1. the brush head synchronously makes linear reciprocating vibration in the rotating process and is matched with a plurality of groups of brush hair monomers which are uniformly distributed in the circumferential direction, so that the tooth surface and the tooth gaps of the teeth can be cleaned at 360 degrees without dead angles, dirt on the tooth surface and the tooth gaps can be better brushed out, and the cleaning effect of the teeth is greatly improved;

2. under the transmission of the multi-stage reduction gears, the requirement of the rotating speed of the brush head can be met, the transmission is stable, and the required installation space is small, so that the whole electric toothbrush is small in size and convenient to carry;

3. under the meshing of matched corrugated teeth or the separation of the corrugated teeth, and the deformation or the reset motion of the spring are matched, so that the driving shaft can vibrate in a reciprocating mode along the length direction of the driving shaft, and further the driving shaft and the driving shaft rotate synchronously.

The present invention has been described in detail in order to enable those skilled in the art to understand the invention and to practice it, and it is not intended to limit the scope of the invention, and all equivalent changes and modifications made according to the spirit of the present invention should be covered by the present invention.

Claims

1. The utility model provides an electric toothbrush, its includes toothbrush handle, brush head, driver, wherein brush head includes brush-holder stud, brush holder and brush hair, the brush hair includes many brush hair monomers, its characterized in that:

the plurality of brush hair single bodies are divided into a plurality of groups, each group is arranged side by side along the length direction of the brush seat, and the plurality of groups of brush hair single bodies are distributed at intervals around the circumference of the brush seat;

the driver comprises a first driving unit for driving the brush rod to rotate around the axis of the first driving unit and a second driving unit which synchronously moves with the brush rod and can drive the brush rod to linearly reciprocate along the length direction of the second driving unit.

2. The electric toothbrush of claim 1, wherein: the first driving unit comprises a driving shaft, a motor arranged in the toothbrush handle and a transmission assembly for connecting an output shaft of the motor with one end of the driving shaft in a transmission way, wherein the driving shaft is connected with the end of the brush rod far away from the bristles from the other end.

3. The electric toothbrush of claim 2, wherein: the drive shaft with the brush-holder stud is from tip detachable connection, and after the connection the drive shaft with the central line coincidence of brush-holder stud.

4. The electric toothbrush of claim 2, wherein: the driving shaft and the output shaft are arranged in parallel.

5. The electric toothbrush according to claim 2 or 4, wherein: the transmission assembly comprises an output gear arranged on the output shaft, a driving gear arranged on the driving shaft and a transmission gear for driving and connecting the output gear and the driving gear.

6. The powered toothbrush as defined in claim 5, wherein: the transmission gear is a multi-stage reduction gear which is meshed oppositely.

7. The electric toothbrush of claim 2, wherein: the second driving unit is provided on the toothbrush handle and has a driving seat through which the other end of the driving shaft passes, a first mating module provided on the driving seat, a second mating module fixed to the driving shaft and mated with the first mating module, and an elastic member for holding a tendency of the second mating module to move in a direction of the first mating module, wherein the driving shaft is linearly moved with respect to the driving seat.

8. The powered toothbrush as defined in claim 7, wherein: and the occlusion end surfaces of the first and second matching modules are respectively provided with matched corrugated teeth.

9. The electric toothbrush according to claim 7 or 8, wherein: the elastic assembly comprises a positioning part and a spring, wherein the positioning part is positioned in the cavity and sleeved on the driving shaft, the spring is sleeved on the periphery of the driving shaft, and two end parts of the spring respectively abut against the positioning part and the spring between the driving seats.

10. The electric toothbrush of claim 1, wherein: the brush seat is cylindric, and the multiunit brush hair monomer is around cylindrical circumference evenly distributed.