CN217851775U

CN217851775U - Toothbrush head

Info

Publication number: CN217851775U
Application number: CN202222228244.8U
Authority: CN
Inventors: 郭建刚; 许志明
Original assignee: Guangdong Xinbao Electrical Appliances Holdings Co Ltd
Current assignee: Guangdong Xinbao Electrical Appliances Holdings Co Ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2022-11-22
Anticipated expiration: 2032-08-23

Abstract

The utility model discloses a toothbrush brush head, include: the nursing brush comprises a brush rod and a head, wherein cleaning bristles are arranged on one end face of the head, and a pipeline capable of conveying nursing materials is formed in the brush rod; the end surface of the head is also provided with soft brush teeth which can convey nursing materials; a feed inlet and a discharge outlet are formed on the soft brush teeth, the feed inlet of the soft brush teeth is communicated with a pipeline in the brush rod, and the discharge outlet is arranged at the top ends of the soft brush teeth; the soft brush teeth and the cleaning brush hairs extend in the same direction on the head; the soft brush tooth include: the brush disc is arranged on the head in a sealing mode; when the utility model is used, the nursing material is sent out from the discharge port and directly acts on the teeth, so that the cleaning material can be more effectively prevented from being accumulated between the cleaning bristles, and better cleaning and nursing effects can be achieved; meanwhile, the soft brush teeth also have certain cleaning capacity, and the soft brush teeth and the cleaning bristles are used for rubbing and cleaning the teeth together, so that the cleaning effect is better compared with the traditional structure.

Description

Toothbrush head

Technical Field

The utility model relates to a toothbrush technical field, more specifically the utility model relates to a toothbrush brush head that says so.

Background

The toothbrush is an oral care tool, and when the ordinary toothbrush is used, toothpaste needs to be squeezed on bristles or the ordinary toothbrush is used together with mouthwash. In order to simplify the use steps, a common toothbrush with toothpaste or an electric toothbrush appears in the market at present, and the toothpaste, the mouthwash and other care materials stored in a brush handle are extruded out through a discharge hole by arranging the discharge hole at the brush head and are used by a user, so that the operation steps of the user are reduced.

In the prior art, the electric toothbrush with toothpaste is provided with a pipeline in the brush head, and nursing materials are conveyed to the brush head through the pipeline, so that the effect of saving trouble and avoiding squeezing toothpaste is achieved. Such as Chinese patent numbers: 202122057888.0 discloses an electric toothbrush capable of automatically discharging toothpaste, which comprises a toothpaste bottle, a main body mounting shell, a foam pump ultrasonic vibration motor and a hollow toothbrush head; toothpaste liquid bottle is installed in the below of main part installation shell, and foam pump and ultrasonic wave vibrations motor all set up in the main part installation shell, and in foam pump one end passed the main part installation shell and arranged toothpaste liquid bottle in, the cavity vibrations axle is installed to the foam pump other end, and the cavity vibrations axle passes ultrasonic wave vibrations motor and connects the cavity toothbrush head. In the technology, the toothpaste liquid is pumped out from the bottle through the foam pump to form foam liquid, and the foam liquid flows to the toothpaste head through the middle of the vibration shaft and overflows to the toothbrush bristles, so that the effect of saving trouble and avoiding squeezing toothpaste is achieved.

However, the prior art has the defects that firstly, the toothpaste has certain viscosity, and the discharge hole is arranged on the brush head, so that after the toothpaste is discharged, the toothpaste is easy to accumulate at the tail end of the brush hair (namely the end of the brush hair contacted with the brush head), and is difficult to contact with teeth, the utilization rate of the toothpaste is low, and the cleaning efficiency is poor; in order to solve the problem, some manufacturers cancel the bristles around the discharge hole on the brush head, so that the extruded toothpaste is convenient to contact with teeth, but the brush head has a region lacking bristles, the cleaning effect is further reduced, and the user experience is poor.

In view of the above problems, the applicant proposes the following improvements.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a toothbrush head.

In order to realize the purpose, the utility model adopts the following technical scheme: a toothbrush head, comprising: the nursing brush comprises a brush rod and a head arranged at one end of the brush rod, wherein cleaning bristles are arranged on one end face of the head, and a pipeline capable of conveying nursing materials is formed in the brush rod; the end surface of the head is also provided with soft brush teeth which can convey nursing materials; a feed inlet and a discharge outlet are formed on the soft brush teeth, the feed inlet of the soft brush teeth is communicated with a pipeline in the brush rod, and the discharge outlet is arranged at the top ends of the soft brush teeth; the soft brush teeth and the cleaning brush hairs extend in the same direction on the head part; the soft brush tooth includes: the brush disc is hermetically arranged on the head part; when the nursing brush is used, nursing materials are conveyed to the end parts of the soft brush teeth through the pipeline, namely the feeding hole, the hollow channel and the discharging hole, the nursing materials are sent out from the discharging hole and directly act on the teeth, and the cleaning materials can be effectively prevented from being accumulated among the cleaning brush teeth, so that better cleaning and nursing effects are achieved; meanwhile, the soft brush teeth also have certain cleaning capacity, and the soft brush teeth and the cleaning bristles are used for rubbing and cleaning the teeth together, so that the cleaning effect is better compared with the traditional structure.

In a further technical scheme, a hollow channel is formed in the brush teeth; the soft brush teeth and the cleaning brush hairs are uniformly distributed on the head part; the hollow channel is not provided with bristles, so that the conveying of the nursing materials is not influenced; the cleaning bristles and the soft brush teeth are uniformly distributed, and the cleaning effect is better.

In a further technical scheme, an installation position is formed on the head part and is arranged in a concave manner, a pipeline outlet is formed on the installation position, and the pipeline outlet is communicated with a feed inlet of the soft brush teeth after the soft brush teeth are installed; the brush disc bottom or the installation position on be provided with the ultrasonic ray, the brush disc supersound is fixed in installation position department, through the mode that the supersound is connected, makes fixed connection between soft brush tooth and the head, even rub with great dynamics between soft brush tooth, the clean brush hair and the tooth, can not cause the condition that drops yet, use safelyr.

In a further technical scheme, a corresponding positioning groove and a corresponding positioning convex part are arranged between the brush disc and the mounting position; during the installation, can make correctly counterpoint between brush dish and the installation position, prevent relative movement after the counterpoint, follow-up can accurately carry out the supersound and connect.

In a further technical scheme, the brush disc is arranged in a columnar shape, the brush teeth extend along the axial direction of the brush disc, and positioning grooves are formed in the peripheral wall of the brush disc; a positioning convex part is arranged in the mounting position formed by the head part; the bottom of the brush disc is provided with an ultrasonic line; this is an implementation mode of soft brush tooth, and the single independent setting of soft brush tooth is installed in the installation position, can independently install many soft brush teeth respectively on the head, sets up as required, and soft brush tooth and clean brush hair evenly distributed reach the large tracts of land clean, the even mesh of nursing material distribution simultaneously.

In a further technical scheme, at least one brush tooth and at least one cleaning brush are arranged on the brush disc; each brush tooth is provided with a feeding hole and a discharging hole respectively; a shunting groove is arranged at the bottom of the brush disc or in the mounting position, and the nursing materials are shunted to each feed inlet through the shunting groove; in another embodiment of the soft brush teeth, the brush teeth and the cleaning bristles can be jointly fixed on the brush disc and then assembled together in the mounting position, and compared with the mode that the single soft brush teeth are independently assembled, the assembling steps are reduced.

In a further technical scheme, a pipeline inlet is formed in the brush rod, a transmission shaft is inserted into the pipeline from the pipeline inlet, the transmission shaft is arranged in a hollow mode, and a sealing ring is arranged between the transmission shaft and the inner wall of the pipeline; the toothbrush head is connected with a handle, and nursing materials are stored in the handle, so that the nursing materials in the handle can be connected with a pipeline through a transmission shaft, and the purpose of transmission is achieved; the sealing ring can play a role in preventing the nursing materials from leaking.

In a further technical scheme, a brush rod bracket is arranged at the inlet of the pipeline of the brush rod and inserted into the inlet of the pipeline; the brush rod bracket is arranged in a hollow way, and the transmission shaft is inserted into the pipeline through the brush rod bracket and is fixed through the brush rod bracket; the brush rod support fixes the transmission shaft, and prevents the transmission shaft from shifting to cause leakage.

In a further technical scheme, the sealing ring comprises: the inner ring and the outer ring form an embedded groove therebetween; the outer ring is hermetically connected with the inner wall of the pipeline, and the inner ring is hermetically connected with the outer wall of the transmission shaft; the open end of the brush rod bracket is embedded into the embedded groove; the concrete structure of sealing washer has specifically been injectd to the aforesaid, prevents between transmission axle and the brush-holder stud support, between the seepage between brush-holder stud support and the pipeline inner wall, uses cleanly more sanitary.

In a further technical scheme, a limiting structure is arranged between the brush rod support and the inner wall of the pipeline, the limiting structure can be a buckle structure and the like, and the brush rod support can be prevented from being separated from the brush rod automatically.

The utility model discloses a all the other useful technological effects embody in concrete implementation mode.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is an exploded view of a brush head according to example 1;

FIG. 2 is a front view of the brush head of example 1;

FIG. 3A isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;

FIG. 3B is an enlarged view of FIG. 3A at A;

FIG. 4 is a schematic output of the treatment material of example 1;

FIG. 5 is an enlarged view at B in FIG. 4;

FIG. 6 is a structural view of a soft tooth in example 1;

FIG. 7 is a front structural view of a soft tooth in example 1;

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 7;

FIG. 9 is an exploded view of the brush head of example 2;

FIG. 10 is a side view of the brush head of example 2;

FIG. 11 is a cross-sectional view taken along line C-C of FIG. 10;

FIG. 12 is a structural view of a soft tooth in example 2;

FIG. 13 is a front structural view of a soft tooth in example 2;

FIG. 14 is a cross-sectional view taken along line D-D of FIG. 13;

figure 15 is an exploded view of the brush head of example 3.

Description of reference numerals:

brush bar 100	Pipe 101	Pipe inlet 102	Pipe outlet 103
				The brush holder 110	Elastic foot 111	Clamping projection 112	Connecting sheet 113
Head 200	Mounting location 210	Splitter box 211	Positioning boss 212
				Cleaning bristles 300	Cleaning bristles 300A	Cleaning bristles	300B
Soft brush tooth 400	Hollow channel 401	Feed inlet 402	Discharge hole 403
				Brush disc 410	Ultrasonic ray 411	Positioning groove 412	Brush teeth 420
Transmission shaft 500
				Seal ring 600	Embedded groove 601	Inner race 610	Outer ring 620

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams each illustrating the basic structure of the present invention only in a schematic manner, and thus show only the constitution related to the present invention.

In the description of the present application, it is to be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1

A toothbrush head, as shown in fig. 1-3A, comprising: a brush rod 100 and a head 200 disposed at one end of the brush rod 100, wherein the other end of the brush rod 100 is connected with a handle (not shown), which is convenient for a user to use. The cleaning bristles 300 and the soft brush teeth 400 are arranged on one end face of the head 200, the soft brush teeth 400 are used for conveying nursing materials in a matched mode, the nursing materials can directly reach the teeth, and the cleaning bristles 300 and the soft brush teeth 400 are used for cleaning and nursing the teeth in a matched mode.

Specifically, a pipe 101 capable of conveying the care materials is formed inside the brush rod 100, a hollow channel 401 is formed in the soft brush teeth 400, a feed inlet 402 is formed at the tail end of the hollow channel 401, a discharge outlet 403 is formed at the top end of the hollow channel 401, after the soft brush teeth 400 are installed on the head 200, the feed inlet 402 of the soft brush teeth 400 is communicated with the pipe 101 in the brush rod 100, and the care materials can be conveyed outwards from the pipe 101 through the feed inlet 402, the hollow channel 401 and the discharge outlet 403 and used by a user.

The soft brush teeth 400 and the cleaning bristles 300 extend in the same direction on the head 200, and the soft brush teeth 400 are made of flexible materials, can transmit nursing materials, and are matched with the cleaning bristles 300 when in use to have certain cleaning capacity on teeth; this ensures that the treatment material reaches the teeth and prevents the head 200 from being lost with a single piece of bristles which could interfere with cleaning.

The soft brush teeth 400 may be set to have the same length as the cleaning bristles 300, or slightly higher than the cleaning bristles 300, or slightly lower than the cleaning bristles 300, depending on the position of the soft brush teeth 400; because the teeth are not a regular plane, and the angle is often changed to clean the teeth, the height of the bristles of the toothbrush on the market is not completely uniform, and therefore, for the present embodiment, the soft teeth 400 and the cleaning bristles 300 extend in the same direction, but may be the same or slightly different in height.

Optionally, the soft brush teeth 400 may be made of soft silica gel, and the cleaning brush bristles 300 may also be made of soft silica gel or fiber material.

Further, as shown in fig. 6 to 8, the soft tooth 400 includes: the brush disc 410 is designed to be cylindrical, the brush teeth 420 are also designed to be cylindrical, the brush teeth 420 are perpendicular to the brush disc 410 and extend in the same direction with the cleaning bristles 300, the hollow channel 401 is arranged in the brush teeth 420, and the soft brush teeth 400 are hermetically installed on the head 200 through the brush disc 410.

In order to make the assembly between the soft brush teeth 400 and the head 200 more stable and prevent leakage, the ultrasonic connection mode is adopted between the soft brush teeth 400 and the head 200, so that the soft brush teeth 400 can be effectively prevented from falling off when being rubbed with teeth, and the use safety is ensured.

As shown in fig. 3A-3B, the head 200 is provided with a mounting portion 210, the mounting portion 210 is recessed, the mounting portion 210 is designed to substantially match with the shape of the brush plate 410, so that the brush plate 410 can be more tightly fitted, and the brush plate 410 can be embedded into the mounting portion 210. A pipeline outlet 103 is arranged in the installation position 210, and the pipeline outlet 103 is communicated with the pipeline 201; after the brush disc 410 is installed, the feed inlet 402 of the soft brush teeth 400 is communicated with the outlet 103 of the pipeline, and further communicated with the pipeline 201.

On the bottom of the brush plate 410 or on the inner bottom wall of the mounting location 210, ultrasonic lines are provided in order to allow a quick ultrasonic connection between the two. As shown in fig. 3B, in this embodiment, the ultrasonic wire 411 is disposed at the bottom of the brush plate 410 and protrudes toward the mounting position 210, and after the brush plate 410 is mounted, the ultrasonic wire 411 is in close contact with the inner wall of the mounting position 210 to wait for a subsequent ultrasonic connection.

Further, the ultrasonic lines should be distributed along the edge of the brush disc 410, or distributed along the feeding port 402 on the brush disc 410, so that after the ultrasonic connection, a circle of sealing lines is formed around the feeding port 402, and the purpose of preventing leakage is effectively achieved.

Further, in order to better limit the brush disc 410 in the mounting position 210 and to enable the subsequent ultrasonic work to be performed quickly and accurately, a corresponding positioning groove and a corresponding positioning convex portion are arranged between the brush disc 410 and the mounting position 210. As shown in fig. 3A, the soft brush teeth 400 are inserted into the installation position 210 from left to right when being assembled, and after being assembled, the soft brush teeth 400 cannot move relatively in the installation position 210 due to the cooperation of the positioning grooves and the positioning protrusions; as shown in fig. 3B and 8, in the present embodiment, a positioning groove 412 is provided on the peripheral wall of the brush plate 410, and a positioning protrusion 212 is provided in the mounting position 210.

Further, as shown in fig. 2, the soft teeth 400 are individually and independently arranged in the present embodiment, and only one soft tooth 400 is arranged in the present embodiment, and the number of the soft teeth 400 can be changed according to actual needs.

The brush head of the product can be applied to an electric toothbrush, a nursing material storage cavity is arranged on a handle of the electric toothbrush, the brush rod 100 is connected with the handle, and a transmission shaft 500 is arranged between the brush rod 100 and the handle, so that nursing materials can be smoothly transmitted from the nursing material storage cavity to the pipeline 101 and smoothly transmitted through the soft brush teeth 400 to be used by a user.

As shown in fig. 4 and 5, the brush bar 100 is provided with a duct inlet 102, and a transmission shaft 500 is inserted into the duct 101 through the duct inlet 102.

In order to fix the transmission shaft 500, a brush bar support 110 is further provided at the pipe inlet 102 of the brush bar 100. The brush rod support 110 is inserted into the tail end of the brush rod 100, and a limiting structure is arranged between the brush rod support 110 and the inner wall of the pipeline 101 and is used for preventing the brush rod support 110 from automatically separating from the brush rod 100; specifically, as shown in fig. 1 and 4, the inside of the brush rod support 110 is hollow for the transmission shaft 500 to pass through, and an elastic leg 111 is formed on the inner wall of the brush rod support 110, and the elastic leg 111 has a spring-out capability toward the center of the brush rod support 110, so that after the transmission shaft 500 is inserted into the brush rod support 110, the elastic leg 111 acts on the transmission shaft 500 to limit the transmission shaft 500. The periphery of the brush bar support 110 is further provided with a clamping protrusion 112, so that a corresponding clamping groove is formed on the inner wall of the pipeline 101, and the brush bar support 110 is stably arranged at the tail end of the brush bar 100 when the clamping groove and the clamping groove are matched. The brush bar support 110 is further provided with an annular connecting piece 113 for covering the opening at the end of the brush bar 100.

In order to realize the sealing between the transmission shaft 500 and the brush rod support 110 and the sealing between the brush rod support 110 and the inner wall of the pipeline 101, and achieve the purpose of good leakage prevention, a sealing ring 600 is arranged between the transmission shaft 500 and the brush rod support 110. Specifically, the sealing ring 600 includes: the inner ring 610 and the outer ring 620, and an embedded groove 601 is formed between the outer ring 620 and the inner ring 610; the outer ring 620 is hermetically connected with the inner wall of the pipe 101, the inner ring 610 is hermetically connected with the outer wall of the transmission shaft 500, and the open end of the brush holder 100 is inserted into the insertion groove 601. The inner wall of the inner ring 610 is provided with saw teeth, and the transmission shaft 500 is inserted into the inner ring 610 in an interference fit manner.

Further, the care material can be toothpaste or oral care solution, and the like, and is not particularly limited.

In use, as shown in fig. 4, treatment materials are fed from the delivery shaft 500 up into the tube 101, through the tube outlet 103, the feed inlet 402, the hollow channel 401, and the discharge outlet 403, and ultimately output for use by a user.

Example 2:

the present embodiment 2 is different from the embodiment 1 in particular in the specific shape of the soft brush teeth 400, and the structure of the mounting positions 210 on the corresponding head 200 is also different.

As shown in fig. 9-14, the soft teeth 400 include: the brush disk 410 and the brush teeth 420, at least two brush teeth 420 are arranged on one brush disk 410, when the brush disk 410 is installed, the purpose of installing two or more brush teeth 420 at the same time can be achieved by installing the brush disk 410 at one time, and compared with the embodiment 1, the assembling steps are reduced.

Since only one brush tooth 420 is disposed on the brush plate 410 of the soft brush tooth 400 in embodiment 1, the soft brush tooth 400 needs to be mounted many times, and meanwhile, since the cleaning bristles 300 and the soft brush tooth 400 have small volumes and also cause difficulty in assembly, in embodiment 2, the cleaning bristles 300A are disposed in different areas, a part of the cleaning bristles 300A are pre-mounted on the upper area of the head 200, and the soft brush tooth 400 is block-shaped and integrally mounted on the lower area of the head 200, so that the assembly is faster.

More specifically, the teeth 420 and the partial cleaning bristles 300 may be co-located on the brush plate 410 and then mounted to the head 200 via the brush plate 410.

As shown in fig. 9, a part of the cleaning bristles 300A is directly implanted into the head 200, and the brush plate 410 is provided with the brush teeth 420 and the cleaning bristles 300B, and the brush teeth 420 are also provided with the hollow channel 401, the inlet 402 and the outlet 403. The head 200 is also provided with a mounting location 210.

The brush plate 410 is not shaped like a cylinder, but is shaped like a polygon to accommodate the installation of the plurality of brush teeth 420 and the cleaning bristles 300B. Since the number of the brush teeth 420 is two in the embodiment, the two brush teeth 420 have the feed ports 402, respectively, and after the brush disc 410 is installed in the installation position 210, the two feed ports 402 are respectively communicated with the duct outlet 103. A diversion channel 211 is arranged in the mounting position 210, and the diversion channel 211 communicates the pipeline outlet 103 with the two feed inlets 402, so that the purpose of uniform discharge of each brush tooth 420 is achieved.

As shown in fig. 12 to 14, the ultrasonic wave lines 411 are also provided on the bottom of the brush plate 410, the positioning grooves 412 are also provided on the peripheral wall of the brush plate 410, the shape of the mounting position 210 matches the brush plate 410, and the positioning protrusions are provided in the mounting position 210. During installation, the soft brush teeth 400 are also installed in the installation positions 210 for limiting, and then ultrasonic connection is performed.

The principle of embodiment 2 is the same as embodiment 1, and detailed description thereof is omitted.

Example 3:

As shown in fig. 15, in the present embodiment, all the brush teeth 420 and the cleaning bristles 300 are disposed on the brush disc 410, and then the brush disc 410 is integrally installed in the installation position 210, so as to achieve the purpose of fast assembly.

Specifically, two brush teeth 420 are provided on the brush plate 410, while the cleaning bristles 300 are uniformly provided on the brush plate 410; the head part 200 is provided with a mounting position 210 with a matched shape, a shunting groove 211 is arranged in the mounting position 210, and the brush disc 410 is fixedly connected with the mounting position 210 in an ultrasonic mode.

The principle of embodiment 3 is the same as embodiment 1, and detailed description thereof is omitted.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A toothbrush head, comprising: brush-holder stud and set up in the head of brush-holder stud one end, be provided with clean brush hair, its characterized in that on the terminal surface of head:

a pipeline capable of conveying nursing materials is formed in the brush rod;

the end surface of the head is also provided with soft brush teeth which can convey nursing materials; a feed inlet and a discharge outlet are formed on the soft brush teeth, the feed inlet of the soft brush teeth is communicated with a pipeline in the brush rod, and the discharge outlet is arranged at the top ends of the soft brush teeth; the soft brush teeth and the cleaning brush hairs extend in the same direction on the head part;

the soft brush tooth include: the brush dish and set up at least one brush tooth on the brush dish, brush dish seal installation is on the head.

2. A toothbrush head according to claim 1 characterised in that: a hollow channel is formed in the brush teeth, and the feed inlet and the discharge outlet are both connected with the hollow channel; the soft brush teeth and the cleaning brush hairs are uniformly distributed on the head.

3. A toothbrush head according to claim 1 characterised in that: the head is provided with a mounting position which is arranged in a concave manner, a pipeline outlet is formed on the mounting position, and the pipeline outlet is communicated with the feed inlet of the soft brush teeth after the soft brush teeth are mounted; the bottom of the brush disc or the installation position is provided with an ultrasonic line, and the brush disc is fixed at the installation position in an ultrasonic mode.

4. A toothbrush head according to claim 3 characterised in that: and a corresponding positioning groove and a corresponding positioning convex part are arranged between the brush disc and the mounting position.

5. A toothbrush head according to any one of claims 1 to 4 characterised in that: the brush disc is arranged in a column shape, the brush teeth extend along the axial direction of the brush disc, and positioning grooves are formed in the peripheral wall of the brush disc; a positioning convex part is arranged in the mounting position formed by the head part; the bottom of the brush disc is provided with an ultrasonic line.

6. A toothbrush head according to any one of claims 1 to 4 characterised in that: the brush disc is provided with at least one brush tooth and at least one cleaning brush hair; each brush tooth is provided with a feed inlet and a discharge outlet respectively; be provided with the splitter box in brush dish bottom or installation position, nursing material shunts to each feed inlet through the splitter box.

7. A toothbrush head according to claim 1 characterised in that: the brush rod is provided with a pipeline inlet, a transmission shaft is inserted into the pipeline from the pipeline inlet, the transmission shaft is arranged in a hollow mode, and a sealing ring is arranged between the transmission shaft and the inner wall of the pipeline.

8. A toothbrush head according to claim 7 characterised in that: a brush rod bracket is arranged at the pipeline inlet of the brush rod and inserted into the pipeline inlet; the brush rod support is arranged in a hollow mode, and the transmission shaft is inserted into the pipeline through the brush rod support and fixed through the brush rod support.

9. A toothbrush head according to claim 8 characterised in that: the sealing ring includes: the inner ring and the outer ring form an embedded groove therebetween; the outer ring is hermetically connected with the inner wall of the pipeline, and the inner ring is hermetically connected with the outer wall of the transmission shaft; the open end of the brush rod bracket is embedded into the embedded groove.

10. A toothbrush head according to claim 8 characterised in that: a limiting structure is arranged between the brush rod support and the inner wall of the pipeline.