CN213249928U

CN213249928U - Electric toothbrush brush head with replaceable brush hair component

Info

Publication number: CN213249928U
Application number: CN202021471289.2U
Authority: CN
Inventors: 蔡峣; 王皓泽
Original assignee: Shenzhen Jieershu Technology Co ltd
Current assignee: Shenzhen Kangchijie Technology Co.,Ltd.
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-05-25
Anticipated expiration: 2030-07-23

Abstract

The utility model relates to an electric toothbrush technical field especially relates to an electric toothbrush brush head of removable brush hair subassembly, and it includes end cover, collet chuck subassembly, brush head pole and brush hair subassembly. The bristle assembly includes a bristle base plate, bristles, and a shaft coupling portion. The brush head rod is provided with a concave part extending along the length direction of the brush head at one end far away from the handle part of the toothbrush, the end cover and the concave part jointly define a cavity, and the collet chuck assembly is arranged in the cavity and supported by the concave part. The collet chuck component is provided with an axial through hole, and the axial connecting part is inserted into the axial through hole, so that the collet chuck component drives the bristle component to rotate. The electric toothbrush is attached with the thimble device, the thimble hole is formed in the end cover, the thimble device is inserted into the thimble hole, the disassembly of the brush hair component can be realized, and the technical problems that the use cost of a consumer is increased, materials are wasted and the environmental protection is not facilitated due to the fact that the whole brush head is replaced are solved.

Description

Electric toothbrush brush head with replaceable brush hair component

Technical Field

The utility model relates to an electric toothbrush technical field especially relates to an electric toothbrush brush head of removable brush hair subassembly.

Background

Chinese consensus of gingival health experts (2015) (hereinafter "consensus") states that: electric toothbrushes have significant utility in both plaque removal and gum health improvement, especially in people with poor oral hygiene compliance control. However, after the toothbrush head is used for a period of time, bristles of the toothbrush head can bend and deform, and even burrs can be generated due to abrasion. When the worn and deformed brush head is continuously used, the effect of removing dental plaque is obviously reduced, and the enamel and the gingiva are possibly damaged. Therefore, the consensus suggests that the toothbrush should be replaced generally about 3 months, and that the bristles should be replaced immediately if they bend or fall.

At present, the brush hair component of the electric toothbrush in the market is generally integrated with the brush head. To replace the bristle sub-assembly, the entire brush head must be replaced, resulting in the consumer paying the entire brush head for the worn bristle sub-assembly, which increases the consumer's cost of use and creates unnecessary material waste. Meanwhile, the brush head of the electric toothbrush belongs to other garbage which can not be recycled, and the brush head rod discarded along with the brush hair component generates extra garbage, which is not beneficial to environmental protection.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the above disadvantages and deficiencies of the prior art, the utility model provides an electric toothbrush head with replaceable brush hair components, which solves the technical problems of increased use cost of consumers, material waste and environmental protection caused by replacing the whole brush head.

(II) technical scheme

In order to achieve the above object, the utility model discloses a main technical scheme include:

the embodiment of the utility model provides an electric toothbrush brush head of removable brush hair subassembly, including end cover, collet chuck subassembly, brush head pole and brush hair subassembly, wherein: the brush hair component comprises a brush hair base plate, brush hair and a shaft connecting part, wherein the brush hair and the shaft connecting part are respectively arranged at two sides of the brush hair base plate; the brush head rod is provided with a concave part extending along the length direction of the brush head at one end far away from the handle part of the electric toothbrush, and the bristle component and the end cover are respectively arranged at two sides of the concave part; the end cap and the recess together define a cavity, the collet assembly being disposed within the cavity and supported by the recess; the collet chuck component is provided with an axial through hole, and the coupling part is inserted into the axial through hole, so that the collet chuck component drives the bristle component to rotate; the electric toothbrush is attached with a needle ejector, the end cover is provided with a needle ejector hole, and when the bristle component and the brush head rod need to be separated, the needle ejector is inserted into the needle ejector hole.

The utility model provides a removable electric toothbrush brush head only needs to insert thimble hole with thimble ware, can be ejecting from the axial through-hole of collet chuck subassembly with the brush hair subassembly to realize the dismantlement of the brush hair subassembly that has worn and torn. When a new bristle assembly is installed, the axial connection part of the bristle assembly is only required to be inserted into the axial through hole of the collet chuck assembly.

Optionally, the collet assembly comprises an upper cap, a transmission assembly and a generally cylindrical housing; the upper cover is matched with the upper end of the shell; the transmission assembly is rotatably arranged in the upper cover and the shell, and the axial through hole is formed in the transmission assembly; the brush head rod is internally provided with a driving part, and the driving part drives the brush hair component to rotate through the transmission component; the shell is provided with an engagement hole at one side facing the active piece.

Optionally, the transmission assembly comprises a hollow follower and a hollow coupling; the hollow driven member is engaged with the driving member; the hollow coupling member is disposed in an inner cavity of the hollow driven member and is connected to an inner wall of the hollow driven member and the coupling portion of the bristle assembly, respectively.

Optionally, the hollow driven member includes a hollow shaft and a joint portion joined to the driving member, the joint portion being provided at a non-end position on the hollow shaft.

Alternatively, the hollow shaft has two shaft sections having different diameters, a small diameter shaft section being rotatably disposed in the through hole of the upper cover, and a large diameter shaft section being rotatably disposed in the through hole of the lower end of the housing.

Optionally, the joint is provided on the large diameter shaft section of the hollow shaft.

Optionally, the hollow coupling is a double-disc type circlip.

Optionally, the elastic clamping end of the double-petal clamp spring presses against the inner wall of the hollow driven member and clamps the coupling portion of the bristle assembly.

Optionally, the engagement portion of the hollow follower is a gear.

Optionally, the outer wall of the housing has a positioning pin, and the recess has a positioning groove cooperating with the positioning pin. The locating pin cooperates with the locating slot to limit rotation of the housing of the collet assembly relative to the brushhead stem.

(III) advantageous effects

The utility model has the advantages that: the utility model provides an electric toothbrush of removable brush hair subassembly brush head sets up the collet chuck subassembly between the end cover of brush head and depressed part, and the coupling portion of brush hair subassembly inserts in the axial through-hole of collet chuck subassembly for it is rotatory that the collet chuck subassembly drives the brush hair subassembly, and electric toothbrush attaches the area thimble ware, is provided with the thimble hole on the end cover, inserts the thimble hole with the thimble ware and can make brush hair subassembly and the separation of brush head pole, thereby has realized simple installation fast and has dismantled the brush hair subassembly. Therefore, when the bristles of the electric toothbrush are worn and deformed, only the bristle component needs to be replaced, and the whole brush head does not need to be replaced, so that the cost of using the electric toothbrush by a consumer is reduced, the material waste is reduced, and the environmental protection pressure is reduced.

Drawings

FIG. 1 is a schematic view of an electric toothbrush head of the replaceable bristle assembly of the present invention;

FIG. 2 is a schematic view of a bristle changing assembly of the electric toothbrush head of the present invention;

FIG. 3 is a perspective exploded view of the collet assembly of FIG. 1;

FIG. 4 is an assembled view of the collet assembly of FIG. 1;

FIG. 5 is an assembled view of the collet assembly of FIG. 1 from another angle.

[ description of reference ]

1: an end cap; 2: a collet assembly; 3: a brush head rod; 31: a recessed portion; 4: a bristle assembly; 5: a needle jack; 21: an upper cover; 22: a hollow shaft; 23: a joint portion; 24: a hollow coupling member; 25: a housing; 251: an engagement hole; 252: positioning pins; 41: a shaft coupling part; 42: a bristle substrate; 43: and (3) brush hairs.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

The embodiment of the utility model provides a removable electric toothbrush brush head sets up collet subassembly 2 between the end cover 1 and the depressed part 31 of brush head, and the coupling part 41 of brush hair subassembly 4 inserts in collet subassembly 2's axial through-hole for collet subassembly 2 drives brush hair subassembly 4 rotatory, and electric toothbrush attaches takes needle ejector 5, is provided with the thimble hole on the end cover 1, has realized simple dismouting brush hair subassembly fast. When the bristle assembly needs to be disassembled, the bristle assembly can be ejected out of the axial through hole of the collet assembly only by inserting the ejector pin device into the ejector pin hole. When the bristle component needs to be installed, the axial connection part of the bristle component only needs to be inserted into the axial through hole of the collet chuck component. Therefore, only the bristle component needs to be replaced when the bristles are worn and deformed, and the whole brush head does not need to be replaced.

In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Example 1

This embodiment provides a powered toothbrush head with a replaceable bristle pack 4, as shown in fig. 1, comprising an end cap 1, a collet assembly 2, a head stem 3 and a bristle pack 4. The bristle assembly 4 includes a bristle substrate 42, bristles 43, and a shaft portion 41, wherein the bristles 43 and the shaft portion 41 are respectively disposed on two sides of the bristle substrate 42. The brush head rod 3 is provided with a concave part 31 extending along the length direction of the brush head at one end far away from the handle part of the electric toothbrush, the brush hair component 4 and the end cover 1 are respectively arranged at two sides of the concave part 31, and the end cover 1 and the concave part 31 are matched to form the complete smooth appearance of the brush head. The end cap 1 and the recess 31 together define a cavity in which the collet assembly 2 is disposed and supported by the recess 31.

The collet assembly 2 has an axial through hole into which the coupling 41 is inserted so that the collet assembly 2 rotates the bristle assembly 4. The electric toothbrush is provided with a needle ejector 5, and the end cover 1 is provided with a needle ejector hole. The ejector 5 has an elongated cylindrical shaft portion, similar to an ejector for opening a card slot of a cellular phone. Removal of the worn bristle assembly 4 is completed by inserting the needle ejector 5 into the eye of the needle, as shown in figure 2, to eject the bristle assembly 4 from the axial bore of the collet assembly 2. When a new bristle sub-assembly 4 is to be installed, the axial connection portion 41 of the bristle sub-assembly 4 is simply inserted into the axial through hole of the collet sub-assembly 2. Preferably, the center axes of the thimble hole of the end cap 1, the axial through hole of the collet assembly 2 and the coupling portion 41 of the bristle assembly 4 coincide.

As shown in fig. 3-5, further, the collet assembly 2 includes an upper cap 21, a transmission assembly, and a generally cylindrical housing 25. The upper cap 21 mates with the upper end of the housing 25 so that the collet assembly 2 forms a separate integral component, preferably a press fit. The transmission assembly is rotatably disposed within the upper cover 21 and the housing 25, and an axial through hole is formed in the transmission assembly. The brush head rod 3 is provided with a driving part, and the driving part drives the brush hair component 4 to rotate through a transmission component. The housing 25 is opened with an engagement hole 251 at a side facing the active member. The engagement holes 251 allow sufficient room for the active member to engage the transmission assembly to avoid interference with the housing 25 of the collet assembly 2.

Further, the transmission assembly includes a hollow follower and hollow coupling 24. The hollow driven member is engaged with the driving member. The hollow coupling 24 is disposed in the inner cavity of the hollow follower and is connected to the inner wall of the hollow follower and the coupling portion 41 of the bristle sub-assembly 4, respectively.

Further, the hollow driven member includes a hollow shaft 22 and a joint portion 23 joined to the driving member, and the joint portion 23 is provided at a non-end position on the hollow shaft 22.

Further, the hollow shaft 22 has two shaft sections different in diameter, a small diameter shaft section being rotatably provided in the through hole of the upper cover 21, and a large diameter shaft section being rotatably provided in the through hole of the lower end of the housing 25, whereby the hollow shaft is rotatably supported in the upper cover 21 and the housing 25. The joint 23 is provided on the large-diameter shaft section of the hollow shaft 22. Preferably, the engagement portion 23 is a gear.

By way of example, the hollow coupling 24 is a two-part circlip. The elastic clamping end of the double-petal clamp spring presses the inner wall of the hollow driven part and clamps the shaft connecting part 41 of the bristle component 4. The two-part circlip thus transmits the rotational movement of the hollow follower to the bristle pack 4.

Further, the outer wall of the housing 25 of the collet assembly 2 has a positioning pin 252, and the recess 31 has a positioning groove that mates with the positioning pin 252. Rotation of the housing 25 of the collet assembly 2 relative to the brushhead stem 3 is limited by the engagement of the locating pins with the locating slots.

Disassembling and assembling process

When the bristle assembly 4 needs to be disassembled, the needle ejector 5 is inserted into the thimble hole of the end cover 1, and the thimble of the needle ejector 5 can push the axial connection part 41 of the bristle assembly 4 to move downwards in the process of penetrating into the axial through hole of the collet assembly 2 through the thimble hole until the axial connection part 41 is disconnected with the hollow coupling 24, so that the bristle assembly 4 falls out of the axial through hole of the collet assembly 2.

When the bristle assembly 4 needs to be installed, the shaft connecting part 41 of the bristle assembly 4 is inserted into the axial through hole of the collet assembly 2 until the shaft connecting part 41 completely enters the axial through hole and is firmly clamped by the hollow coupling 24. After the mounting is completed, the upper end of the shaft coupling portion 41 does not protrude from the end cap 1. Preferably, the upper end of the shaft coupling portion 41 does not protrude from the upper cover 21.

Therefore, the utility model provides an electric toothbrush brush head of removable brush hair subassembly has realized only needing to change the brush hair subassembly when the brush hair wearing and tearing warp, and must not change whole brush head to reduce consumer's cost of using electric toothbrush, reduced the material extravagant, alleviateed the environmental protection pressure.

In the description of the present invention, it is to be understood that 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 implying any 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 invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean 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 second feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, 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 invention. 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.

While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. An electric toothbrush brush head with a replaceable bristle component, which is characterized by comprising an end cover (1), a collet assembly (2), a brush head rod (3) and a bristle component (4), wherein:

the brush hair component (4) comprises a brush hair base plate (42), brush hair (43) and a shaft connecting part (41), wherein the brush hair (43) and the shaft connecting part (41) are respectively arranged at two sides of the brush hair base plate (42);

the brush head rod (3) is provided with a concave part (31) extending along the length direction of the brush head at one end far away from the handle part of the electric toothbrush, and the bristle component (4) and the end cover (1) are respectively arranged at two sides of the concave part (31);

the end cover (1) and the recess (31) jointly define a cavity, and the collet assembly (2) is arranged in the cavity and supported by the recess (31);

the collet assembly (2) is provided with an axial through hole, and the coupling part (41) is inserted into the axial through hole, so that the collet assembly (2) drives the bristle assembly (4) to rotate;

the electric toothbrush is attached with a needle ejector (5), the end cover (1) is provided with a needle ejector hole, and when the bristle component (4) and the brush head rod (3) need to be separated, the needle ejector (5) is inserted into the needle ejector hole.

2. The powered toothbrush head with replaceable bristle assembly of claim 1, characterized in that the collet assembly (2) comprises an upper cap (21), a transmission assembly and a generally cylindrical housing (25); the upper cover (21) is matched with the upper end of the shell (25); the transmission assembly is rotatably arranged in the upper cover (21) and the shell (25), and the axial through hole is formed in the transmission assembly; the brush head rod (3) is internally provided with a driving part, and the driving part drives the brush hair component to rotate through the transmission component; the housing (25) is provided with an engagement hole (251) at a side facing the active member.

3. The electric toothbrush head with replaceable bristle assembly of claim 2 wherein the drive assembly includes a hollow driven member and a hollow coupling member (24); the hollow driven member is engaged with the driving member; the hollow coupling member (24) is disposed in an inner cavity of the hollow follower, and is connected to an inner wall of the hollow follower and the coupling portion (41) of the bristle pack (4), respectively.

4. The electric toothbrush head with a replaceable bristle assembly of claim 3, characterized in that the hollow driven member includes a hollow shaft (22) and an engaging portion (23) engaged with the driving member, the engaging portion (23) being provided at a non-end position on the hollow shaft (22).

5. The electric toothbrush head of replaceable bristle assembly of claim 4 characterized in that the hollow shaft (22) has two shaft sections of different diameters, a smaller diameter shaft section being rotatably disposed in the through hole of the upper cover (21) and a larger diameter shaft section being rotatably disposed in the through hole of the lower end of the housing (25).

6. The electric toothbrush head with replaceable bristle assembly of claim 5 characterized in that the joint (23) is disposed on the large diameter shaft section of the hollow shaft (22).

7. An electric toothbrush head with replaceable bristle assembly according to claim 3 characterised in that the hollow coupling member (24) is a two-part circlip.

8. The electric toothbrush head with replaceable bristle pack of claim 7, characterized in that the elastic clamping end of the double-petal type snap spring presses against the inner wall of the hollow follower and clamps the shaft portion (41) of the bristle pack (4).

9. The electric toothbrush head with replaceable bristle assembly of claim 4 wherein the engaging portion (23) of the hollow follower is a gear.

10. The electric toothbrush head of claim 2, characterized in that the outer wall of the housing (25) has a locating pin (252), and the recess (31) has a locating groove which cooperates with the locating pin (252).