CN215273514U - Brush head assembly and electric toothbrush - Google Patents

Abstract

The utility model discloses a brush head subassembly and electric toothbrush, brush head subassembly include brush holder, first brush head and second brush head. The brush handle comprises a hard rubber body and a soft rubber sleeve covering the surface layer of the hard rubber body. The first brush head and the second brush head are assembled at the same end part of the hard rubber body. The soft rubber sleeve at least covers the surface layer area of the hard rubber body corresponding to the first brush head and the second brush head. And the first brush head and the second brush head are symmetrical and arranged at an angle along the axis of the hard rubber body. Through just being the angle next-door neighbour setting with first brush head and second brush head symmetry, so can reduce the shared space of first brush head and second brush head to a great extent to the adaptation is in all kinds of crowds' oral cavity size. Only need finely tune the brush holder, can accomplish the cleanness to the inside and outside and the nest face of tooth, the pivoted range of arm that significantly reduces can bring more high efficiency, more convenient, more scientific and reasonable's the experience of brushing teeth for the user.

Description

Brush head assembly and electric toothbrush

Technical Field

The utility model relates to an electric toothbrush technical field indicates a brush head subassembly and electric toothbrush especially.

Background

With the continuous progress of technology, electric toothbrushes are replacing ordinary manual toothbrushes because of their higher cleaning ability. The ordinary toothbrush depends on the strength of an individual when the toothbrush is used in the using process, the randomness is high, the direction of brushing teeth cannot be well mastered, and the situation that the cleanliness of teeth is not high can be caused. The electric toothbrush can adjust the strength according to the degree of the requirement of the electric toothbrush, and the angle which needs to be mastered when brushing teeth, and the design is more scientific and humanized. And the brush head adopted in the design of the electric toothbrush is smaller, so that gaps between teeth or places which can not be cleaned by the common toothbrush can be well cleaned, thereby improving the degree of cleaning the teeth when people use the toothbrush and improving the use feeling of people.

At present, electric toothbrush heads on the market are single-side brush heads in a straight line shape, only one side of teeth can be cleaned when the teeth are cleaned, and the electric toothbrush needs to be carefully brushed one side by one side to comprehensively clean the teeth. However, it is very cumbersome and time consuming for some people. Especially, when the toothbrush is used for a child, the child does not know how to scientifically brush teeth, and during tooth brushing, the child hardly brushes the teeth comprehensively, easily leaks to brush the tooth surface, even feels that tooth brushing is complicated, and usually deals with the trouble, so that the toothbrush is not clean, and the tooth decay is easily caused after a long time. Although multi-surface brush heads are available in the market, the design principle is that the brush heads are used for brushing teeth at one time according to the full-wrapping teeth, so that the brush heads are large in size, poor in cleaning effect (with tooth brushing dead angles) and experience, and poor in market reverberation.

Therefore, it is a problem to be solved by those skilled in the art that how to effectively overcome the drawbacks of the conventional electric toothbrush, such as large brush head, low brushing efficiency, easy brush leakage, and troublesome brushing change.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a brush head subassembly and electric toothbrush, through with first brush head and the first symmetry of second brush and be the setting of angle next-door neighbour, so can reduce its shared space at to a great extent to adaptation in all kinds of crowds' oral cavity size. Only need finely tune the brush holder, can accomplish the cleanness to the inside and outside and the nest face of tooth, the pivoted range of arm that significantly reduces can bring more high efficiency, more convenient, more scientific and reasonable's the experience of brushing teeth for the user.

The utility model provides a technical scheme as follows:

the utility model provides a brush head subassembly in the first aspect, include:

the brush handle comprises a hard rubber body and a soft rubber sleeve covering the surface layer of the hard rubber body;

the first brush head and the second brush head are assembled at the same end part of the hard rubber body;

the soft rubber sleeve at least covers the surface layer area of the hard rubber body corresponding to the first brush head and the second brush head; and

the first brush head and the second brush head are symmetrically arranged at an angle along the axis of the hard rubber body.

In this patent, through just being the angle next-door neighbour setting with first brush head and second brush head symmetry, so can reduce its shared space to a great extent for the structure is more compact, with adaptation in all kinds of crowds' oral cavity size. The soft rubber sleeve can play a role in slowing down vibration and collision with the inner skeleton of the oral cavity to a great extent, and the use experience of a user is improved. The user only needs to accomplish the all-round cleanness to the inside and outside and the nest face of tooth through the fine setting brush holder, promotes user's use and experiences. The brush head assembly can brush two tooth surfaces simultaneously, for example, when teeth are brushed and ground, the inner side, the tooth socket surface and the outer side of the teeth can be cleaned only by slightly rotating the brush handle, so that the rotation amplitude of arms is greatly reduced; if when brushing incisor teeth, can brush the inside and outside simultaneously again, whole process of brushing teeth is simple to use high-efficient, possesses higher cleaning ability simultaneously, can bring more high-efficient, more convenient, more scientific and reasonable's the experience of brushing teeth for the user, has solved traditional electric toothbrush and has brushed inefficiency, easily leaks to brush, and it is troublesome scheduling problem to brush teeth and trade the district.

Further preferably, an included angle which is larger than or equal to 120 degrees and smaller than or equal to 150 degrees is formed between the first brush head and the second brush head.

Further preferably, the hard rubber body comprises a rod, a first mounting part and a second mounting part which are arranged at the same end part of the rod;

the first mounting part is used for assembling the first brush head;

the second mounting portion is used for assembling the second brush head.

Further preferably, the soft rubber sleeve covers the outer surface layers of the rod piece, the first mounting part and the second mounting part at the same time; and

the soft rubber sleeve corresponds to the arc transition of the edge area of the outer surface layer of the first installation part and the second installation part.

Further preferably, the first brush head comprises a first supporting sheet and first bristles arranged on the first supporting sheet;

the first supporting piece is assembled on the first mounting part; and

the second brush head comprises a second supporting sheet and second bristles arranged on the second supporting sheet;

the second support sheet is assembled on the second mounting part;

the edge of the free end face of the first bristle is abutted against the edge of the free end face of the second bristle, so that an included angle which is larger than or equal to 120 degrees and smaller than or equal to 150 degrees is formed between the free end face of the first bristle and the free end face of the second bristle.

Further preferably, the free end surfaces of the first bristles and the second bristles are in an arc profile or a flat profile or a V-profile or a cone profile.

Further preferably, the first mounting portion is provided with a first concave groove adapted to the first supporting plate, and the first supporting plate is embedded in the first concave groove;

and the second installation part is provided with a second concave groove matched with the second support sheet, and the second support sheet is embedded in the second concave groove.

The utility model also provides an electric toothbrush in a second aspect, include:

a host component;

the above-mentioned brush head assembly;

wherein, one end of the hard rubber body back to the first brush head and the second brush head is also provided with a connecting part; and

the main machine component comprises a main shell, a PCB, a battery, a driving motor and a switch key, wherein the PCB, the battery, the driving motor and the switch key are electrically connected with each other;

the PCB, the battery and the driving motor are arranged in the main shell, and the switch key is arranged on the main shell; and

the main shell is provided with a port part for butting the interface part; and

the driving motor comprises a motor body and a motor shaft which is connected to the motor body in a driving mode, and the motor shaft extends to the outer side of the main shell through the port part and is used for being in butt joint with the brush head assembly.

Further preferably, the host assembly further comprises a middle frame support;

the middle frame support is arranged in the main shell and used for fixing the PCB, the battery, the motor body and the switch key; and/or

And a waterproof silica gel piece is arranged at the joint of the motor shaft and the port part.

Further preferably, an interface member is provided in the interface portion;

the free end of the motor shaft is inserted into the interface piece so as to realize the assembly of the brush head assembly on the host machine assembly; and

the profile of the interface section outer skin is adapted to the profile of the port section outer skin.

The technical effects of the utility model reside in that:

1. in this patent, through just being the angle next-door neighbour setting with first brush head and second brush head symmetry, so can reduce its shared space to a great extent for the structure is more compact, with adaptation in all kinds of crowds' oral cavity size. The angle setting can be matched with the structure of teeth to a great extent, so that the first brush head and the second brush head can brush two tooth surfaces simultaneously, for example, when teeth are brushed and ground, the inner side, the socket surface and the outer side of the teeth can be cleaned only by slightly rotating the brush handle, and the rotation amplitude of the arm is greatly reduced; if when brushing incisor teeth, can brush the inside and outside simultaneously again, whole process of brushing teeth is simple to use high-efficient, possesses higher cleaning ability simultaneously, can bring more high-efficient, more convenient, more scientific and reasonable's the experience of brushing teeth for the user, has solved traditional electric toothbrush and has brushed inefficiency, easily leaks to brush, and it is troublesome scheduling problem to brush teeth and trade the district.

2. In this patent, all adopt forms such as butt fusion, scald between first brush hair and the first backing sheet and between second brush hair and the second backing sheet to connect or bond to constitute in an organic whole, this no copper plants the mode of hair and need not add the sheetmetal and fix the brush hair, so can avoid the metal to take place the problem of oxidation completely for the entry is relieved more, and can reduce the first brush head and the first size of brushing the head of second.

3. In this patent, all adopt forms such as ultrasonic wave, buckle or bonding to constitute in an organic whole between first backing sheet and the first installation department and between second backing sheet and the second installation department for simple to operate and steadiness are strong.

4. In this patent, establish to mutual butt through the edge with the free end face of first brush hair and the edge of the free end face of second brush hair to form between the free end face of making first brush hair and the free end face of second brush hair and be greater than or equal to 120 degrees, and be less than or equal to 150 degrees contained angles, with the structure that matches the tooth, make first brush head and second brush head brush two tooth faces simultaneously.

5. In this patent, be arc profile or plane or V profile or tapered surface through the free end face setting with the free end face of first brush hair and second brush hair, can satisfy different users 'user demand, enlarge user's selection range.

6. In this patent, through be equipped with the first depressed groove that is used for holding first backing sheet at first installation department, and be equipped with the second depressed groove that is used for holding the second backing sheet at the second installation department, so can reduce the occupation space of first brush head and second brush head to a great extent, and improve the steadiness that first brush head and second brush head are connected.

7. In this patent, cover in the extexine of member, first installation department and second installation department simultaneously through setting up the flexible glue cover, can play at to a great extent and slow down vibration and slow down colliding with of skeleton in the oral cavity, promote user's use and experience.

8. In this patent, set up waterproof silica gel spare through the junction at motor shaft and port portion, can effectively prevent to get into in the host computer subassembly because of the water of brushing teeth in-process to cause the damage of its inside components and parts.

Drawings

The invention will be described in further detail with reference to the following drawings and embodiments:

FIG. 1 is a schematic view of a brush head assembly and a main body assembly of the present invention in one state;

FIG. 2 is a schematic view of the main body assembly and the brush head assembly of the present invention in another state;

FIG. 3 is an exploded perspective view of the brush head assembly shown in FIG. 1;

FIG. 4 is a cut-away view of the host assembly shown in FIG. 1;

FIG. 5 is a schematic diagram of the internal structure of the host assembly shown in FIG. 1;

FIG. 6 is an exploded perspective view of the first head shown in FIG. 1;

FIG. 7 is a view showing a state of use of the electric toothbrush of the present invention in brushing the teeth, in which the first brush bristles are brushing the outside of the teeth and the second brush bristles are brushing the socket surface;

FIG. 8 is a view showing a state in which the electric toothbrush of the present invention is used in brushing the inner sides of teeth with the first brush bristles facing the dentures of the first brush and the second brush bristles when brushing molars;

fig. 9 is a view showing the use state of the electric toothbrush of the present invention in which the first brush bristles are disposed inside the teeth and the second brush bristles are disposed outside the teeth when brushing incisor teeth.

The reference numbers illustrate:

100. a host component; 110. a main housing; 111. a port section; 120. a PCB board; 130. a battery; 140. a drive motor; 141. a motor body; 142. a motor shaft; 150. a middle frame support; 160. a waterproof silicone member; 161. a first portion; 162. a second portion; 200. a brush head assembly; 210. a brush handle; 211. a hard glue body; 2111. a rod member; 2112. an interface section; 2113. a first mounting portion; 2114. a second mounting portion; 2115. a first recess groove; 2116. a second recess groove; 2117. an interface member; 212. a soft rubber sleeve; 220. a first brush head; 221. a first support sheet; 222. a first bristle; 230. a second brush head; 231. a second support sheet; 232. a second bristle; 300. a tooth.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

The Pasteur method of brushing teeth is also known as gingival sulcus cleaning or horizontal vibration. Is a method recommended by the American dental Association for effectively removing plaque near the gingival margin and in the gingival sulcus. The soft-bristle toothbrush is selected, and the toothbrush and the long axis of the tooth form an angle of about 45 degrees to point to the direction of the root tip (upper teeth are upward, lower teeth are downward). According to the gum-tooth junction area, a part of the bristles enters the gingival sulcus, a part of the bristles is laid on the gingival margin and extends into the adjacent gap as far as possible, and the bristles are horizontally vibrated for about 10 times in the front-back direction for a short distance in the original position by gentle pressure. The toothbrush moves only about 1mm during vibration, brushing 2-3 teeth each time. When moving the toothbrush to the next set of teeth, attention is paid to the overlapping placement. The pasteurization tooth brushing method is a tooth brushing method which is relatively advocated in the world at present. Its advantage is exactly not only can be clean the food waste brush on the crown surface, can also be effectively to the food waste of tooth neck gum below and soft dirt clean up. Compared with the conventional horizontal brushing method and vertical brushing method, long-term horizontal brushing causes wedge-shaped defects in the neck of the tooth, and the pasteurization tooth brushing method causes less damage to the neck of the tooth than the horizontal brushing method. The vertical brush can clean the tooth surface, but can not completely remove soft scale and food residues below the gum at the neck of the tooth. Therefore, the pasteurization tooth brushing method not only can remove soft scale at the neck of the tooth, but also can effectively remove food residues on the surface of the tooth, and is a better tooth brushing method.

Therefore, the technical scheme is designed based on the pasteurization tooth brushing principle, can bring more efficient, more convenient, more scientific and reasonable tooth brushing experience to a user, and solves the problems that the traditional brush head is low in tooth brushing efficiency, easy to miss brushing, troublesome in tooth brushing change and the like.

Specifically, in accordance with one embodiment of the present invention, as shown in fig. 1 and 2, the present invention provides in a first aspect a brush head assembly 200 comprising a handle 210, a first brush head 220, and a second brush head 230. The brush handle 210 includes a hard glue body 211 and a soft glue cover 212 covering the surface of the hard glue body 211. The first brush head 220 and the second brush head 230 are assembled at the same end of the stiff glue body 211. The soft rubber cover 212 covers at least the surface area of the hard rubber body 211 corresponding to the first brush head 220 and the second brush head 230. And the first brush head 220 and the second brush head 230 are arranged symmetrically and angularly along the axis of the ebonite body 211.

In this technical scheme, through the first brush head 220 with the second brush head 230 symmetry and be the angle and be close to the setting, so can reduce the shared space of first brush head 220 with the second brush head 230 to a great extent for the structure is more compact, with the adaptation in all kinds of crowds' oral cavity size. The user only needs to finely adjust the brush holder 210 to complete the all-round cleaning of the inner side and the outer side of the teeth 300 and the dental pit surface, and the use experience of the user is improved. This brush head subassembly 200 can brush two tooth faces simultaneously, if when brushing the molar, only need slightly to rotate brush holder 210 and can accomplish the cleanness to tooth 300 inboardly, flank of tooth and outside, the pivoted range of the arm that significantly reduces, if again when brushing incisor, can brush the inside and outside simultaneously, whole process of brushing teeth uses simply high-efficiently, possess higher clean ability simultaneously, can bring more high-efficient for the user, it is more convenient, more scientific and reasonable's the experience of brushing teeth, it is inefficient to have solved traditional electric toothbrush, the brush is easily leaked, it trades the trouble scheduling problem of district to brush teeth.

The present invention also provides an electric toothbrush in a second aspect, which comprises a main body assembly 100 and the above-mentioned brush head assembly 200. In this embodiment, referring to fig. 1 and 4, the brush head assembly 200 is removably assembled to the host assembly 100. Specifically, the host assembly 100 includes a main housing 110, a rear cover, a PCB 120, a battery 130, a driving motor 140, and a switch button, which are electrically connected to each other. The PCB 120, the battery 130 and the driving motor 140 are disposed in the main housing 110, and the switch button is disposed on the main housing 110. The battery 130 is used to supply power to the PCB 120 and the driving motor 140. Wherein, various components and control modules have been integrated on the PCB board 120 for the operation of control electric toothbrush and the switching of various functional modes, and the switch button is not limited to the start and close of control driving motor 140, and it can be used to adjust driving motor 140's vibration amplitude and frequency, and then can enlarge electric toothbrush's application range, satisfies user's multiple demand. Wherein the driving motor 140 is used to interface the brush head assembly 200 under the control of the PCB board 120 for vibrating the brush head assembly 200 during the user's tooth brushing process, resulting in better cleaning effect. Specifically, one end of the main housing 110 along the length direction thereof has a port portion 111 for docking the brush head assembly 200, and the driving motor 140 may include a motor body 141 and a motor shaft 142 drivingly connected to the motor body 141, the motor shaft 142 extending to the outside of the main housing 110 through the port portion 111 for docking the brush head assembly 200.

In this embodiment, the main housing 110 is a hollow cylindrical structure for being held by a user's hand. One end of the main housing 110 opposite to the port part 111 is a charging part (not shown) for charging the battery 130. This portion of charging is equipped with a interface that charges, and back lid detachably lock is in the portion of charging to be used for opening and sealing this interface that charges, prevent that it is infected with dirt and steam etc. and then influence the charging effect and steam gets into main casing 110 insidely in order to damage each components and parts.

Further, in the present embodiment, referring to fig. 4, the main unit assembly 100 further includes a middle frame support 150 disposed in the main housing 110 for fixing the PCB 120, the battery 130, the motor body 141 and the switch button. The specific contour of the middle frame support 150 is not limited, and can be set according to the actual use requirement. In order to make the arrangement between the components in the main housing 110 compact and save space, the overall profile of the middle frame support 150 can be matched with the inside of the main housing 110, so that when the middle frame support 150 is assembled in the main housing 110, the stability is stronger under the abutting of the inner wall of the main housing 110, and the middle frame support does not shake, so that the stability of the PCB 120, the battery 130, the motor body 141 and the switch key fixed thereon is also stronger, wherein the switch key extends to the outside of the main housing 110 for the user to touch, the specific profile of the switch key is not limited, and the switch key can be specifically set according to the actual use requirements.

In a preferred example, referring to fig. 4 and 5, based on the location configuration of the charging part and the port part 111, the battery 130 may be preferentially disposed at a location adjacent to the charging part, so as to charge the battery 130, making the charging effect better; the motor body 141 may be preferably disposed adjacent to the port 111 to facilitate the motor shaft 142 extending to the outside of the main housing 110 through the port 111 to be abutted against the brush head assembly 200. Further, based on the sheet-shaped structure of the PCB 120, the PCB 120 may be preferably disposed in a strip shape to match the inner contour of the main housing 110. Preferably, the PCB board 120 may be fixed at a position of the middle frame bracket 150 corresponding to an inner wall surface of the main housing 110, which may facilitate installation of the battery 130 and the driving motor 140. Thus, the battery 130 and the driving motor 140 are located on the same straight line, so that when the host computer assembly 100 is held by a user, all positions are uniformly stressed, the situation of local overweight or overweight is avoided, and the holding feeling of the user is improved.

Further, in the present embodiment, with continued reference to fig. 4 and 5, in order to facilitate smooth vibration of the motor shaft 142 without being obstructed, the motor shaft 142 may be disposed coaxially with the opening of the port portion 111 and in clearance fit. In this manner, the motor shaft 142 can provide sufficient vibratory force to the brushhead assembly 200. And in order to ensure that water contaminated by the electric toothbrush can be effectively prevented from entering the main unit assembly 100 through the opening of the port part 111 to damage internal components thereof during the process of brushing teeth, a waterproof silicone member 160 may be disposed at the connection between the motor shaft 142 and the opening of the port part 111. Specifically, the waterproof silicone member 160 is in interference fit with the opening and the motor shaft 142, that is, after the waterproof silicone member 160 is assembled between the opening and the motor shaft, the waterproof silicone member 160 is always in a squeezed state, so that water penetration can be effectively prevented. In a preferred example, the waterproof silicone member 160 may be a collar structure, which includes a first portion 161 and a second portion 162 that are integrally formed and coaxially disposed, a diameter of the second portion 162 is larger than a diameter of the first portion 161, the first portion 161 is embedded in the opening of the port portion 111, and the second portion 162 abuts against a side surface of the opening facing the motor body 141, so that effective fixing of the waterproof silicone member 160 can be achieved without play along the axial direction of the motor shaft 142. Of course, in other examples, the specific profile of the waterproof silicone member 160 is not limited, and may be specifically set according to the actual use requirement, and will not be described herein in detail.

In this embodiment, referring to fig. 1, the brush head assembly 200 may include a handle 210, a first brush head 220, and a second brush head 230 assembled to the host assembly 100. Wherein the first brush head 220 and the second brush head 230 are assembled at the free end of the handle 210 and are used together for cleaning the teeth 300.

In this embodiment, referring to fig. 1, 3 and 4, the handle 210 may include a body 211 of hard glue. The body 211 may include a stem 2111, an interface portion 2112 at one end of the stem 2111, and a first mounting portion 2113 and a second mounting portion 2114 at the other end of the stem 2111. Interface portion 2112 is adapted to interface with host assembly 100, a first mounting portion 2113 is adapted to assemble first brush head 220, and a second mounting portion 2114 is adapted to assemble second brush head 230. Referring to fig. 3 and 4, the interface portion 2112 is hollow, and has an interface 2117 disposed therein, and the free end of the motor shaft 142 is inserted into the interface 2117, so as to assemble the brush head assembly 200 to the host assembly 100. The interface 2117 is contoured to fit within the interface portion 2112, and because the electric toothbrush is configured to be ergonomic, the transverse cross-section of the main housing 110 is substantially larger than that of the handle 210, i.e., the diameter of the main housing 110 is substantially larger than that of the handle 210. Therefore, in order to improve the appearance of the junction between the main housing 110 and the brush handle 210, and to enable a streamlined and smooth transition between the two, the connecting portion 2112 may be shaped like a horn, so that when the free end of the connecting portion 2112 abuts against the port portion 111, the diameters of the two ends are exactly equal, and the contour of the outer surface layer of the connecting portion 2112 and the contour of the outer surface layer of the port portion 111 may be adapted, but not limited thereto. In this embodiment, the specific structure of the interface 2117 is not limited, and any component capable of fixing the motor shaft 142 in the interface 2112 is within the scope of protection of the present patent.

Further, in the present embodiment, referring to fig. 1 to 3, the handle 210 may further include a soft rubber sleeve 212; the soft rubber sleeve 212 at least covers the surface layer area of the hard rubber body 211 corresponding to the first brush head 220 and the second brush head 230, so that vibration and collision with bones in the oral cavity can be reduced, and the use experience of a user is improved. Preferably, the soft rubber sleeve 212 can cover the outer surface layer of the rod 2111, the first mounting portion 2113 and the second mounting portion 2114 at the same time. Therefore, the area of the soft rubber sleeve 212 is increased, so that the acting area between the soft rubber sleeve and the inner part of the oral cavity is increased, and the effect of slowing down the vibration and the collision with the bones in the oral cavity is better. The soft rubber sleeve 212 can cover the outer surface layers of the rod 2111, the first mounting portion 2113 and the second mounting portion 2114 in a sleeve beer mode. It should be noted that the edge regions of the soft rubber sleeve 212 corresponding to the positions of the first installation portion 2113 and the second installation portion 2114 are in arc transition, so that the diaphragm induction of the edges of the first installation portion 2113 and the second installation portion 2114 to the oral cavity can be reduced, and the use experience can be further improved. More particularly, one end of the soft rubber sleeve 212, which faces the interface portion 2112, corresponding to the rod 2111 abuts against the interface portion 2112, and a joint between the outer surface layer of the soft rubber sleeve 212 and the outer surface layer of the interface portion 2112 is in streamline smooth transition, so that the soft rubber sleeve is attractive and high in comfort. The soft rubber sleeve 212 may be made of rubber or plastic, or may be made of other soft materials, but is not limited thereto.

In this embodiment, referring to fig. 1 and 2, the first brush head 220 and the second brush head 230 are symmetrically disposed along the axis of the handle 210; and an included angle which is greater than or equal to 120 degrees and less than or equal to 150 degrees is formed between the first brush head 220 and the second brush head 230. So, first brush head 220 and second brush head 230 symmetry just are the angle and are close to the setting, can reduce its shared space to a great extent for the structure is more compact, in order to match in all kinds of crowds' oral cavity size and the structure of tooth 300, makes first brush head 220 and second brush head 230 can brush two tooth faces simultaneously. The user only needs to finely adjust the brush holder 210 to complete the all-round cleaning of the inner side and the outer side of the teeth 300 and the dental pit surface, and the use experience of the user is improved.

Specifically, referring to fig. 2, 3 and 6, the first brush head 220 may include a first support piece 221 and first bristles 222 provided on the first support piece 221, and the first support piece 221 may be assembled to the first mounting portion 2113. And the second brush head 230 may include a second support plate 231 and second bristles 232 disposed on the second support plate 231, and the second support plate 231 may be assembled to the second mounting portion 2114. Referring to fig. 2, the edge of the free end surface of the first bristle 222 and the edge of the free end surface of the second bristle 232 are abutted against each other, so that an included angle a which is greater than or equal to 120 degrees and less than or equal to 150 degrees is formed between the free end surface of the first bristle 222 and the free end surface of the second bristle 232. In a preferred example, referring to fig. 3, the first mounting portion 2113 is provided with a first recess 2115 adapted to the first supporting piece 221, and the first supporting piece 221 is embedded in the first recess 2115. And the second mounting portion 2114 is provided with a second recessed groove 2116 adapted to the second support piece 231, and the second support piece 231 is embedded in the second recessed groove 2116. Such an arrangement can greatly reduce the space occupied by the first brush head 220 and the second brush head 230 and improve the stability of the connection of the first brush head 220 and the second brush head 230.

The first bristles 222 and the first support sheet 221 and the second bristles 232 and the second support sheet 231 are integrated in a welding, hot-pressing or bonding mode, and the copper-free bristle planting mode does not need to add a metal sheet to fix the bristles, so that the problem of metal oxidation can be completely avoided, an inlet is more relieved, and the size and weight of the first brush head 220 and the second brush head 230 can be reduced to a great extent by removing the metal sheet. And the first supporting sheet 221 and the first installation part 2113 and the second supporting sheet 231 and the second installation part 2114 can be integrated by ultrasonic waves, buckles, bonding or other forms, so that the installation is convenient and the stability is strong.

Further, in the present embodiment, referring to fig. 5 and 6, the free end surfaces of the first bristles 222 and the free end surfaces of the second bristles 232 may be in an arc profile or a flat profile or a V profile or a conical profile, but are not limited thereto, and may be specifically set according to actual use scenarios. Therefore, the use requirements of different users can be met to a great extent, and the selection range of the users is expanded.

It is worth mentioning, see fig. 7 to 9, this electric toothbrush can brush two tooth faces simultaneously, if when brushing the molar, only need slightly rotate brush holder 210 can accomplish the cleanness to tooth 300 inboard, flank and outside, the pivoted range of arm that significantly reduces, if again when brushing incisors, can brush the inside and outside simultaneously, whole process of brushing teeth is simple to use high-efficient, possess higher clean ability simultaneously, can bring more high-efficient for the user, it is more convenient, more scientific and reasonable's experience of brushing teeth, it is low to have solved traditional electric toothbrush efficiency of brushing teeth, it is easy to leak and brush, it trades the trouble scheduling problem of district to brush teeth.

Specifically, referring to FIG. 7, in one application scenario, the electric toothbrush is brushing the outside of the teeth 300 with the first bristles 222 and brushing the socket surface with the second bristles 232 while brushing the molars. In this case, the angle range of the included angle B formed between the first bristle 222 and the outside is 30 degrees or more, 60 degrees or less, and preferably 45 degrees or less, but is not limited thereto. At this time, the outer brushing method is a pasteurization brushing method, and can improve the cleaning effect of the teeth 300. And only need slightly rotate electric toothbrush 30 degrees to 60 degrees, the nest face can be brushed to first brush hair 222, the inboard can be brushed to second brush hair 232 to accomplish the all-round washing to the molar.

Further, referring to FIG. 8, in another application scenario, the electric toothbrush is brushing the ground surface with the first bristles 222 and brushing the inner side of the teeth 300 with the second bristles 232 while brushing the molars. At this time, the angle range of the included angle C formed by the second bristles 232 and the inner side is greater than or equal to 30 degrees and less than or equal to 60 degrees, preferably 45 degrees, but is not limited thereto. At this time, the outer brushing method is a pasteurization brushing method, and can improve the cleaning effect of the teeth 300. And only need slightly rotate electric toothbrush 30 degrees to 60 degrees, the outside can be brushed to first brush hair 222, the nest face can be brushed to second brush hair 232 to accomplish the all-round washing to the molar.

Further, referring to fig. 9, in another application scenario, when the electric toothbrush is used for brushing incisors, since the incisors have no dented surface, the first bristles 222 and the second bristles 232 can brush the inner side and the outer side simultaneously, and the incisors can be cleaned in all directions only by slightly moving the electric toothbrush.

It is worth mentioning that, because people's tooth 300 divides into four districts, be the upper right district respectively, the upper left district, the lower right district, the lower left district, this electric toothbrush is brushing every district, only need slightly rotate brush holder 210, and remove along tooth 300, can accomplish all-round brushing teeth, clean reliably, it is simple convenient, can save about 40% time than traditional in-line toothbrush simultaneously, can bring more high efficiency for the user, it is more convenient, more scientific and reasonable's the experience of brushing teeth, it is inefficient to have solved traditional electric toothbrush to brush teeth, the easy hourglass is brushed, it trades the trouble scheduling problem in district to brush teeth.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A brushhead assembly, comprising:

the brush handle comprises a hard rubber body and a soft rubber sleeve covering the surface layer of the hard rubber body;

the first brush head and the second brush head are assembled at the same end part of the hard rubber body;

the soft rubber sleeve at least covers the surface layer area of the hard rubber body corresponding to the first brush head and the second brush head; and

the first brush head and the second brush head are symmetrically arranged at an angle along the axis of the hard rubber body.

2. The brushhead assembly of claim 1,

an included angle which is larger than or equal to 120 degrees and smaller than or equal to 150 degrees is formed between the first brush head and the second brush head.

3. The brush head assembly of claim 1 or 2,

the hard rubber body comprises a rod piece, a first mounting part and a second mounting part, wherein the first mounting part and the second mounting part are arranged at the same end part of the rod piece;

the first mounting part is used for assembling the first brush head;

the second mounting portion is used for assembling the second brush head.

4. The brushhead assembly of claim 3,

the soft rubber sleeve covers the rod piece, the first mounting part and the outer surface layer of the second mounting part at the same time; and

the soft rubber sleeve corresponds to the arc transition of the edge area of the outer surface layer of the first installation part and the second installation part.

5. The brushhead assembly of claim 3,

the first brush head comprises a first supporting sheet and first bristles arranged on the first supporting sheet;

the first supporting piece is assembled on the first mounting part; and

the second brush head comprises a second supporting sheet and second bristles arranged on the second supporting sheet;

the second support sheet is assembled on the second mounting part;

the edge of the free end face of the first bristle is abutted against the edge of the free end face of the second bristle, so that an included angle which is larger than or equal to 120 degrees and smaller than or equal to 150 degrees is formed between the free end face of the first bristle and the free end face of the second bristle.

6. The brushhead assembly of claim 5,

the free end surfaces of the first bristles and the second bristles are in an arc profile or a plane or a V profile or a conical profile.

7. The brushhead assembly of claim 5,

the first mounting part is provided with a first concave groove matched with the first supporting sheet, and the first supporting sheet is embedded in the first concave groove;

and the second installation part is provided with a second concave groove matched with the second support sheet, and the second support sheet is embedded in the second concave groove.

8. An electric toothbrush, comprising:

a host component;

the brushhead assembly of any one of claims 1-7;

wherein, one end of the hard rubber body back to the first brush head and the second brush head is also provided with a connecting part; and

the main machine component comprises a main shell, a PCB, a battery, a driving motor and a switch key, wherein the PCB, the battery, the driving motor and the switch key are electrically connected with each other;

the PCB, the battery and the driving motor are arranged in the main shell, and the switch key is arranged on the main shell; and

the main shell is provided with a port part for butting the interface part; and

the driving motor comprises a motor body and a motor shaft which is connected to the motor body in a driving mode, and the motor shaft extends to the outer side of the main shell through the port part and is used for being in butt joint with the brush head assembly.

9. The electric toothbrush of claim 8,

the host assembly further comprises a center frame support;

the middle frame support is arranged in the main shell and used for fixing the PCB, the battery, the motor body and the switch key; and/or

And a waterproof silica gel piece is arranged at the joint of the motor shaft and the port part.

10. The electric toothbrush according to claim 8 or 9,

an interface piece is arranged in the interface part;

the free end of the motor shaft is inserted into the interface piece so as to realize the assembly of the brush head assembly on the host machine assembly; and

the profile of the interface section outer skin is adapted to the profile of the port section outer skin.

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