CN214855036U - Electric toothbrush head and electric toothbrush - Google Patents

Abstract

The application provides an electric toothbrush head and electric toothbrush relates to the clean technical field in oral cavity, and electric toothbrush head is including brushing first main part, brush silk and flexible glue layer, electric toothbrush's driving piece is connected to first main part one end of brush, the brush silk includes stiff end and free end, the stiff end welding of brush silk is located brush in the main part, there is the difference in height at the free end of brush silk, the flexible glue layer cladding in brush first main part is provided with the one end of brush silk. Electric toothbrush head is through welding the brush silk in brush head main part, can form easily that the free end has the brush silk of difference in height, and the brush silk density that forms is high, is difficult for hiding dirty dirt, and in the use, the cladding is in brush head main part outer flexible glue layer when colliding with the oral cavity wall in the oral cavity, because of the soft glue layer is flexible structure, can reduce the dynamics that electric toothbrush head and oral cavity wall collided to the experience when brushing teeth has been improved.

Description

Electric toothbrush head and electric toothbrush

Technical Field

The application relates to the technical field of oral cavity cleaning, in particular to an electric toothbrush head and an electric toothbrush.

Background

With the improvement of living standard of people, people pay more and more attention to the aspect of personal cleaning and health. Oral cleaning care has also received attention as an important direction in personal cleaning. In recent years, electric toothbrushes are more and more popular due to the advantages of high cleaning efficiency, convenience, rapidness and the like. However, the conventional electric toothbrush cannot clean the interdental space well due to its operation mode (when vibrating in a horizontal swinging manner), and is likely to collide with the inner wall of the oral cavity during operation, so that the user feels uncomfortable during the tooth brushing process, and the user experience is affected.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the application provides an electric toothbrush head and an electric toothbrush.

The application provides a pair of electric toothbrush head, including first main part of brush, brush silk and flexible glue layer, electric toothbrush's driving piece is connected to first main part one end of brush, the brush silk includes stiff end and free end, the stiff end welding of brush silk is located brush is in the main part, there is the difference in height in the free end of brush silk, the flexible glue layer cover in first main part of brush is provided with the one end of brush silk.

In one possible embodiment, the fixed ends of the brush filaments are implanted on the head body by an anchor-free tufting technique.

In one possible embodiment, the difference in height of the free ends of the brush filaments ranges from 0.5mm to 2.5 mm.

In one possible embodiment, the difference in height of the free ends of the filaments forms a curved surface of the filaments having an arc shape that conforms to the curved shape of a human tooth.

In a possible embodiment, the brush head body includes a brush plate and a brush rod, the brush plate is disposed at one end of the brush rod, the brush filaments are welded to the brush plate, and the brush plate and the brush rod are integrally formed.

In a possible embodiment, the brush head body includes a fixing plate, a brush plate and a brush rod, the brush plate is disposed at one end of the brush rod, the fixing plate is disposed on the brush plate, the brush filaments are welded to the fixing plate, and the brush plate and the brush rod are integrally formed.

In a possible embodiment, the fixing plate is provided with a plurality of positioning grooves for positioning and fixing the brush filaments.

In a possible embodiment, the fixing plate is provided with a plurality of positioning blocks, and the positioning grooves are arranged on the positioning blocks;

or the fixed plate is provided with a plurality of positioning blocks, and the positioning grooves are formed by the plurality of positioning blocks and the fixed plate in a surrounding mode.

In a possible embodiment, the brush head body comprises a first working surface for fixing the brush filaments and a second working surface facing away from the brush filaments, and the soft adhesive layer covers the whole end of the brush head body including the first working surface and the second working surface;

or the soft rubber layer is coated on the adjacent side surfaces of the first working surface and the second working surface and part of the second working surface.

The application also provides an electric toothbrush, including driving piece and foretell electric toothbrush head, the driving piece with the first main part of brush is connected.

Compared with the prior art, the beneficial effects of the application are that:

electric toothbrush head and electric toothbrush, through welding the brush silk on the fixed plate, can form the brush silk that the free end has the difference in height easily, and the brush silk has the shape easy control of the brush face of difference in height, can effectively guarantee clean effect, it cleans to the position that is difficult to clean such as fissure of tooth, and the brush silk density that forms is high, be difficult for hiding dirty dirt, in the use, the cladding is when fixed plate and brush-holder stud outer flexible glue layer bump with the oral cavity wall in the oral cavity, because of soft glue layer is flexible structure, can reduce the dynamics of electric toothbrush head and oral cavity wall collision, thereby experience when brushing teeth has been improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Figure 1 shows a schematic view of a powered toothbrush head according to one embodiment of the present application;

figure 2 shows an exploded schematic view of the powered toothbrush head of figure 1;

figure 3 is a schematic view of another angle of the powered toothbrush head of figure 1;

figure 4 shows an exploded schematic view of the powered toothbrush head of figure 3;

figure 5 shows a cross-sectional view of the powered toothbrush head of figure 1.

Description of the main element symbols:

100-electric toothbrush head; 10-a brush bar; 11-an insertion portion; 111-a connecting trough; 12-brushing the board; 121-a limiting hole; 20-fixing the plate; 21-a fixed part; 211-stationary plane; 2111-locating piece; 2112-locating slot; 212-connection face; 2121-a limiting block; 22-a connecting part; 30-brushing filaments; 31-brushing the filament bundle; 311-free end; 312-a fixed end; 40-soft glue layer; 41-a wrapping layer; 411-locating holes; 42-cover layer.

Detailed Description

Reference will now be made in detail to embodiments of the present application, 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 exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

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 one or more of that feature. In the description of the present application, "a plurality" means two or more 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; either directly or indirectly through intervening media, either internally or in any other relationship. 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.

Example one

Referring to fig. 1, one embodiment of the present application provides a powered toothbrush head 100. The electric toothbrush head 100 is used in an electric toothbrush to clean a human mouth. Electric toothbrush head 100's clean effectual, just electric toothbrush head 100 can slow down the brush head and take place violent collision because of the vibration with the oral cavity inner wall in the use, promotes the comfortable sensation of experience of brushing teeth of user.

Referring also to fig. 2, the powered toothbrush head 100 includes a head body, filaments 30, and a soft gel layer 40. One end of the brush head main body is connected with a driving piece of the electric toothbrush. The brush filaments 30 are provided on the brush head body. The soft adhesive layer 40 covers the end of the brush head body provided with the brush filaments 30.

The brush head body can be a brush rod 10 and a brush plate 12; or the brush bar 10, the brush bar and the fixing plate 20. The brush plate 12 and the retaining plate 20 are disposed at an end of the brush bar 10 remote from the drive member. The brush bar 10 and the brush plate 12 are integrally formed. The fixing plate 20 is provided on the brush plate 12. The brush wires 30 are welded on the brush plate 12 or the fixing plate 20.

In this embodiment, the driving member of the electric toothbrush is a sonic electric motor.

When the toothbrush is used, the driving piece of the electric toothbrush drives the brush head main body, the brush wires 30 and the soft rubber layer 40 which are arranged on the brush head main body to vibrate, and the brush wires 30 clean the inside of the oral cavity through vibration. Cladding is when the soft glue film 40 of outside bumps with the oral cavity wall in the oral cavity, because soft glue film 40 is flexible structure, can reduce the dynamics that electric toothbrush head 100 and oral cavity wall collided to comfortable experience when brushing teeth has been improved.

Example two

Referring to fig. 1 and 2, the present embodiment provides an electric toothbrush head 100, which can be applied to an electric toothbrush. The present embodiment is an improvement on the technology of the first embodiment, and compared with the first embodiment, the difference is that:

the brush bar 10 includes an insertion portion 11 and a brush plate 12 connected to each other. The insertion portion 11 is used for connecting with a driving member of the electric toothbrush. The brush plate 12 is used to connect the fixing plate 20 and the soft rubber layer 40.

Specifically, referring to fig. 3 and 4, a connecting groove 111 is formed at one end of the insertion portion 11 along the axial direction of the electric toothbrush head 100, and the connecting groove 111 is used for inserting a driving end of a driving member of the electric toothbrush to connect the driving member with the electric toothbrush head 100, so that the electric toothbrush head 100 can vibrate under the driving of the driving member.

The brush plate 12 is disposed at an end of the insertion portion 11 away from the connection groove 111. The brush plate 12 is adapted to be inserted into the mouth of a person during operation of the electric toothbrush such that the bristles 30 disposed thereon clean the mouth.

The insertion portion 11 is substantially circular truncated cone-shaped, and the diameter of the cross section of the insertion portion 11 gradually decreases toward the brush plate 12 along the axial direction of the electric toothbrush head 100.

The brush plate 12 is substantially in the form of a flat sheet, and the end of the brush plate 12 remote from the insertion portion 11 is curved to prevent damage to the oral cavity during cleaning.

In this embodiment, the insertion portion 11 is integrally formed with the brush plate 12.

In this embodiment, the brush rod 10 is made of hard material. Specifically, the brush rod 10 is formed by injection molding of a hard material to improve transmission efficiency.

EXAMPLE III

Referring to fig. 1 to 4, the present embodiment provides an electric toothbrush head 100, which can be applied to an electric toothbrush. The present embodiment is an improvement on the basis of the techniques of the first and second embodiments, and compared with the second embodiment, the difference is that:

the fixing plate 20 includes a fixing portion 21 and a connecting portion 22 connected to each other. The fixing portion 21 is used for fixing the brush filaments 30. The connecting portion 22 serves to reinforce the connection with the brush bar 10.

Specifically, the fixing portion 21 is substantially in the shape of an elliptic cylinder. The fixing portion 21 includes a fixing surface 211 and a connecting surface 212 which are disposed opposite to each other. The fixing surface 211 is used for fixing the brush wires 30. The connection surface 212 is provided on the brush plate 12.

The fixing surface 211 is provided with a plurality of positioning blocks 2111. And a positioning groove 2112 is arranged on the positioning block 2111. The positioning slot 2112 is used for positioning and fixing the brush wires 30.

In this embodiment, the positioning block 2111 is protruded from the fixing surface 211, the positioning block 2111 is substantially annular, and a positioning groove 2112 is formed between the positioning block 2111 and the fixing surface 211. But not limited thereto, in other embodiments, the positioning slot 2112 may also be a groove directly formed on the positioning block 2111, or a combination formed by enclosing the annular positioning block 2111 and a groove formed on the fixing surface 211 together.

A limiting block 2121 is arranged on the connecting surface 212. The brush plate 12 is provided with a limiting hole 121. The limiting block 2121 is received in the limiting hole 121 to limit and fix the connecting surface 212 on the brush board 12.

The connecting portion 22 is provided on a side surface of the fixing portion 21 having an elliptical cylindrical shape, and the connecting portion 22 connects the fixing portion 21 and an end portion of the insertion portion 11 in a long axis direction of the fixing portion 21.

In this embodiment, the positioning blocks 2111 have different shapes, and the positioning blocks 2111 have a triangular shape, an elliptical shape, and a chamfered rectangular shape. But not limited thereto, the positioning block 2111 may be shaped and positioned according to different functions (e.g., cleaning, whitening, gum care, massaging, etc.).

In some embodiments, the positioning block 2111 covers more than 90% of the area of the fixing surface 211, so as to make full use of the fixing surface for disposing the brush wires 30.

In this embodiment, the fixing portion 21 and the connecting portion 22 are integrally formed.

In this embodiment, the fixing plate 20 is made of a hard material. Specifically, the fixing plate 20 is formed by injection molding of a hard material, so as to improve transmission efficiency.

In some embodiments, the fixing plate 20 is integrally formed with the brush bar 10. Specifically, the fixing plate 20 and the brush rod 10 can be formed by one-time injection molding of hard materials, so that the processing steps are reduced, the production efficiency is improved, and the production cost is reduced.

Example four

Referring to fig. 1 to 4, the present embodiment provides an electric toothbrush head 100, which can be applied to an electric toothbrush. The present embodiment is an improvement on the technology of the first to third embodiments, and compared with the third embodiment, the difference is that:

the brush filaments 30 include a plurality of sets of brush filament bundles 31. The brush wire bundles 31 are respectively arranged in the corresponding positioning grooves 2112, and the cross sections of the brush wire bundles 31 are the same as the opening shapes of the corresponding positioning grooves 2112.

The brush silk 30 is planted through no anchor planting hair technique in the constant head tank 2112, through no anchor planting hair technique, can with brush silk 30 welded fastening in the constant head tank 2112 for the density of brush silk 30 obtains improving on the electric toothbrush head 100, and difficult filth avoids breeding the bacterium simultaneously.

Specifically, the brush wire bundle 31 includes a free end 311 and a fixed end 312. The free end 311 is used for cleaning the oral cavity. The fixing end 312 is disposed in the positioning slot 2112.

When the bristles are planted, the brush filament bundle 31 is fixed to a specific shape by passing through a jig, and then the fixed end 312 is placed in the corresponding positioning groove 2112. The fixed end 312 and the positioning block 2111 are melted by ultrasonic waves, and the brush wire bundle 31 is fixed in the positioning block 2111.

In this embodiment, the free ends 311 of the brush filament bundle 31 include two forms, a planar surface and a convex surface. The planar free end 311 serves to clean most of the positions in the mouth. The free end 311 of the convex surface has a height difference, so that the free end can penetrate into a gap to clean the position (such as a tooth gap, a tooth surface groove and the like) which is difficult to clean in the oral cavity, the cleaning effect of the brush wire 30 can be ensured, and the cleaning efficiency is high.

In this embodiment, the difference in height of boss face free end 311 is at 0.5 ~ 2.5mm to when guaranteeing clean effect, improve electric toothbrush head 100's life.

The convex surface-shaped brush filament bundle 31 can be formed by combining a height difference bristle planting technology with an anchoring-free bristle planting technology.

Specifically, a part of the brush filament bundles are clamped by the clamp to form a lower table surface shape with a hollow middle, the rest of the brush filament bundles are clamped by the middle position clamp to form a higher table surface shape at the middle position, and finally the brush filament bundles 31 are fixed in the positioning block 2111 in an ultrasonic melting mode. The brush filament bundle 31 having a height difference can be formed on the same positioning block 2111 by two times of jig bristle feeding processes having a height difference.

In other embodiments, the free ends of the filament bundle 31 may also include a bevel or curve to form the filaments 30 of the overall powered toothbrush head 100 into a wave-like curve that is more conformable to the teeth alignment surface for cleaning the interior of the mouth.

In this embodiment, the material of the brush filaments 30 is selected from PA (Polyamide, nylon) and PBT (polybutylene terephthalate), or two materials are used together, but not limited thereto.

EXAMPLE five

Referring to fig. 1 to 4, the present embodiment provides an electric toothbrush head 100, which can be applied to an electric toothbrush. The present embodiment is an improvement on the technology of the first embodiment, and compared with the first embodiment, the difference is that:

the soft adhesive layer 40 includes a wrapping layer 41 and a covering layer 42. The wrapping layer 41 is wrapped outside the fixing plate 20 and connected to the brush plate 12. The cover layer 42 is provided on a side of the brush plate 12 remote from the fixing plate 20.

Referring to fig. 5, the wrapping layer 41 is provided with a positioning hole 411 corresponding to the positioning block 2111. One surface of the positioning block 2111, which is far away from the fixing surface 211, penetrates out of the positioning hole 411, so that the positioning connection between the wrapping layer 41 and the fixing plate 20 is more stable, the phenomenon of slipping of the wrapping layer 41 is avoided, and meanwhile, the wrapping layer 41 wraps the gaps of the holes, through which the brush wires 30 extend, so that the washing water is further prevented from entering the roots of the brush wires 30 to store dirt and scale. It will be appreciated that in other embodiments, the side of the locating block 2111 remote from the mounting surface 211 may also be flush with the side of the surrounding layer 41 remote from the brush plate 12, in order to enhance the appearance of the powered toothbrush head 100.

The covering layer 42 is partially protruded in the limiting hole 121 of the brush plate 12, so that the positioning connection between the covering layer 42 and the brush plate 12 is more stable.

In some embodiments, the thickness of the soft adhesive layer 40 is greater than 1mm, so that the force of the electric toothbrush head 100 colliding with the side wall of the oral cavity when vibrating can be effectively reduced, and the oral care experience of a user can be improved.

In some embodiments, the brush head body comprises a first working surface for fixing the brush filaments 30 and a second working surface facing away from the brush filaments 30, and the soft glue layer 40 covers the whole of one end of the brush head body including the first working surface and the second working surface;

or, the wrapping layer 41 of the soft adhesive layer 40 wraps the adjacent side surfaces of the first working surface and the second working surface, and the covering layer 42 of the soft adhesive layer 40 partially covers the second working surface.

In this embodiment, the soft adhesive layer 40 is selected from materials having large intermolecular force when combined with the brush rod 10 and the fixing plate 20, so as to improve the cleaning experience and prolong the service life.

EXAMPLE six

Referring to fig. 1-5, this embodiment provides a method of manufacturing a powered toothbrush head 100. This embodiment is for manufacturing the powered toothbrush head 100 of the first through fifth embodiments above, and specifically utilizes the following steps to make the powered toothbrush head 100:

step S1: a fixing plate 20 is provided.

Specifically, the fixing plate 20 may be manufactured by injection molding or other machining.

Step S2: the brush filaments 30 are fixed to the fixing plate 20 by anchor-free tufting.

Specifically, the brush filament bundles 31 are respectively fixed in the corresponding positioning blocks 2111 by an anchorless flocking technique and an ultrasonic melting method.

Step S3: the brush bar 10 is injection molded.

Specifically, the fixing plate 20 with the brush filaments 30 fixed thereon is placed in a forming mold of the brush rod 10, and hard plastic is injected in an injection molding manner, so that the brush rod 10 fixedly connected with the fixing plate 20 is obtained.

Step S4: and injection molding the soft rubber layer 40.

Specifically, the brush plate 12 of the brush rod 10 with the brush wires 30 fixed thereon is placed in a forming mold of the soft rubber layer 40, and a soft rubber material is injected in an injection molding manner to obtain the soft rubber layer 40 fixedly connected with the fixing plate 20 and the brush plate 12.

Since the brush filaments 30 are fixed to the brush bar 10 by the fixing plate 20, the selection range of materials for the soft adhesive layer 40 is relatively wide, which facilitates selection of different materials according to the main driving direction of the electric toothbrush head 100.

In some embodiments, the brush rod 10 may be integrally formed with the fixing plate 20, that is, the step S1 provides the combination of the fixing plate 20 and the brush rod 10, so that the step S3 may be omitted to reduce the process flow and the production cost, but the range of material selection for injection molding is small in this type of embodiment because the adopted brush wires 30 need to be bonded to the fixing plate 20.

EXAMPLE seven

Referring to fig. 1 to 5, this embodiment provides a powered toothbrush including a drive member and a powered toothbrush head 100 as described in any one of the first to sixth embodiments. The drive member is connected to the brush bar 10.

The electric toothbrush has the soft rubber layer 40 coated outside the fixed plate 20 and the brush rod 10, so that the soft rubber layer 40 mainly collides with the inner wall of the oral cavity when the oral cavity is cleaned, and the soft rubber layer 40 is of a flexible structure, so that the collision force on the inner wall of the oral cavity can be reduced, and the tooth brushing experience is improved.

The application provides an electronic toothbrush head 100 and electronic toothbrush, through set up fixed plate 20 on brush-holder stud 10, it is fixed with brush-holder stud 30 through no anchoring bristle planting technique on fixed plate 20, and through soft glue film 40 with fixed plate 20 and brush-holder stud 10 cladding, thereby when brushing teeth, flexible characteristic through soft glue film 40, alleviate the uncomfortable sense that the vibration brought, and the damage that the vibration collision led to the oral cavity, solve among the prior art because electronic toothbrush head influences the problem that the user experienced with oral cavity collision, discomfort when having reduced and brushing teeth. Moreover, the brush wire 30 with high density, high cleaning effect and long service life can be obtained by combining the anchoring-free technology with the high-low hair planting technology. Meanwhile, the fixing plate 20 is used for fixing the brush wires 30, so that the selection range of materials such as the soft rubber layer 40 is wider.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means 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 application. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. The utility model provides an electric toothbrush head, its characterized in that, is including brushing first main part, brush silk and flexible glue layer, electric toothbrush's driving piece is connected to first main part one end of brush, the brush silk includes stiff end and free end, the stiff end welding of brush silk is located brush is first in the main part, there is the difference in height in the free end of brush silk, the flexible glue layer cover in it is provided with to brush the first main part brush the one end of brush silk.

2. The powered toothbrush head of claim 1, wherein the fixed ends of the filaments are embedded in the head body by an anchorless tufting technique.

3. An electrically powered toothbrush head according to claim 1 characterised in that the free ends of the filaments have a height differential in the range 0.5mm to 2.5 mm.

4. The powered toothbrush head of claim 1 wherein the difference in height of the free ends of the filaments defines a curved filament surface having a curvature that conforms to the curved shape of a human tooth.

5. The powered toothbrush head of claim 1, wherein the head body includes a brush plate and a brush rod, the brush plate being disposed at one end of the brush rod, the filaments being welded to the brush plate, the brush plate and the brush rod being integrally formed.

6. The powered toothbrush head of claim 1, wherein the head body includes a retaining plate, a brush plate and a brush rod, the brush plate being disposed at one end of the brush rod, the retaining plate being disposed on the brush plate, the brush filaments being welded to the retaining plate, the brush plate and the brush rod being integrally formed.

7. The powered toothbrush head of claim 6 wherein the retaining plate is provided with a plurality of detents for retaining and retaining the brush filaments.

8. The powered toothbrush head of claim 7 wherein the retaining plate has a plurality of locating blocks with the locating grooves formed thereon;

or the positioning blocks and the fixing plate jointly enclose the positioning groove.

9. An electrically driven toothbrush head according to any one of claims 1 to 8 characterised in that the head body includes a first working surface for retaining the filaments and a second working surface facing away from the filaments, the layer of soft gel completely encapsulating one end of the head body including the first and second working surfaces;

or the soft rubber layer is coated on the adjacent side surfaces of the first working surface and the second working surface and part of the second working surface.

10. An electric toothbrush comprising a drive member and an electric toothbrush head according to any one of claims 1 to 9, the drive member being connected to the head body.

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