CN219323523U

CN219323523U - Brush head assembly and electric toothbrush

Info

Publication number: CN219323523U
Application number: CN202320769585.8U
Authority: CN
Inventors: 张剑忠; 李冬保
Original assignee: Ruishengte Technology Shenzhen Co ltd
Current assignee: Ruishengte Technology Shenzhen Co ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-07-11
Anticipated expiration: 2033-03-29

Abstract

The utility model relates to the technical field of electric toothbrushes, and discloses a brush head assembly and an electric toothbrush, wherein the brush head assembly comprises: the toothbrush comprises a toothbrush handle, a plurality of bristles are embedded and installed at one end of the toothbrush handle, a containing cavity is formed in the toothbrush handle, a mounting decoration ring is embedded and installed in the containing cavity, the decoration ring is matched with a driving shaft in a clamping mode, an elastic locking arm is arranged on the decoration ring, a clamping block matched with the locking arm in a clamping mode is arranged on the driving shaft, a locking face is arranged on the locking arm, the locking face is attached to one side wall face of the driving shaft, a plurality of concave holes are formed in one side of the clamping block, and the concave holes are used for increasing friction force between the driving shaft and the inner wall of the decoration ring. The utility model is convenient for the detachable installation of the brush head and the driving shaft, improves the connection stability of the brush head and prolongs the service life of the brush head.

Description

Brush head assembly and electric toothbrush

Technical Field

The utility model relates to the technical field of electric toothbrushes, in particular to a brush head assembly and an electric toothbrush.

Background

Along with the improvement of the living standard of people, the importance degree of oral health is higher and higher. The electric toothbrush has the advantages of strong cleaning capability, convenience, practicability, capability of reducing damage to teeth or gums, and the like, and the popularity is increasing.

In the prior art, an electric toothbrush comprises a handle and a replaceable brush head, wherein a driving shaft for driving the brush head to swing is embedded in the handle. The brush head needs to be frequently separated from the drive shaft for cleaning or other purposes. However, the limited structure of the connection of the drive shaft to the brush head results in reduced torque transmission and axial retention of the drive shaft, affecting the proper use of the electric toothbrush.

Therefore, how to provide a brush head assembly and an electric toothbrush, so as to facilitate the detachable connection between the brush head and the driving shaft and improve the stability of the connection of the brush head is a technical problem to be solved.

Disclosure of Invention

The utility model aims to provide a brush head assembly and an electric toothbrush, which are convenient for the brush head to be detachable from a driving shaft and for improving the connection stability of the brush head.

To this end, according to a first aspect, an embodiment of the utility model discloses a brush head assembly comprising: the toothbrush comprises a toothbrush handle, a plurality of bristles are embedded and installed at one end of the toothbrush handle, a containing cavity is formed in the toothbrush handle, a mounting decoration ring is embedded and installed in the containing cavity, the decoration ring is matched with a driving shaft in a clamping mode, an elastic locking arm is arranged on the decoration ring, a clamping block matched with the locking arm in a clamping mode is arranged on the driving shaft, a locking face is arranged on the locking arm, the locking face is attached to one side wall face of the driving shaft, a plurality of concave holes are formed in one side of the clamping block, and the concave holes are used for increasing friction force between the driving shaft and the inner wall of the decoration ring.

The locking arm is further provided with a first inclined plane, and the clamping block is provided with a first abutting surface matched with the first inclined plane.

The utility model is further arranged that the first abutting surface is an inclined surface or an arc surface.

The locking arm is further provided with a second inclined plane, and the clamping block is provided with a second abutting surface which abuts against the second inclined plane.

The utility model is further arranged such that the second abutment surface is inclined.

The utility model further provides that the decorative ring is bonded or ultrasonically welded to the toothbrush handle.

The utility model further provides that a blocking surface is provided in the decorative ring, which blocking surface abuts against or is in a gap with the end face of the insertion end of the drive shaft.

The utility model further provides that the driving shaft and the clamping block are of an integrated structure.

The utility model further provides that the decoration ring and the locking arm are of an integrated structure, and the decoration ring and the locking arm are made of plastic.

According to a second aspect, an electric toothbrush comprises an electric toothbrush main body and the brush head assembly according to the first aspect, wherein the electric toothbrush main body is used for controlling the working state of the brush head assembly so as to realize electric tooth brushing.

The utility model has the following beneficial effects: through decorating ring and drive shaft joint cooperation, the locking face with a side wall laminating of drive shaft, the shrinkage pool has increased the drive shaft with decorate frictional force between the ring inner wall, and then provide a brush head subassembly, make things convenient for brush head and drive shaft to carry out demountable installation, and promoted the stability of brush head connection, extension brush head's life.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a brush head assembly according to the present embodiment;

FIG. 2 is a schematic illustration of an exploded view of a brush head assembly according to the present disclosure;

FIG. 3 is a schematic diagram showing an exploded view of a brush head assembly according to the second embodiment;

FIG. 4 is a front view of a brush head assembly disclosed in this embodiment;

FIG. 5 is a schematic view of the cross-sectional structure A-A of FIG. 4;

FIG. 6 is a schematic illustration of a semi-sectional structure of a decorative ring in a brush head assembly according to the present disclosure;

fig. 7 is a schematic view showing a half-section of a drive shaft in a brush head assembly according to the present embodiment.

Reference numerals: 1. a toothbrush handle; 11. a receiving chamber; 2. brushing; 3. a decorative ring; 31. a locking arm; 311. a locking surface; 312. a first inclined surface; 313. a second inclined surface; 314. a stop surface; 4. a drive shaft; 41. a clamping block; 411. a first abutment surface; 412. a second abutment surface; 42. concave holes.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

According to a first aspect, an embodiment of the present utility model discloses a brush head assembly, as shown in fig. 1-7, comprising: the toothbrush handle 1, a plurality of brush hair 2 are installed to the inlayed of one end of toothbrush handle 1, be equipped with holding chamber 11 in the toothbrush handle 1, holding chamber 11 is used for inlaying and establishes installation decorative ring 3, decorative ring 3 and the cooperation of drive shaft 4 joint are equipped with on the decorative ring 3 and have elastic locking arm 31, be equipped with on the drive shaft 4 with locking arm 31 joint complex fixture block 41, be equipped with locking face 311 on the locking arm 31, locking face 311 is laminated with a side wall surface of drive shaft 4, drive shaft 4 is equipped with a plurality of shrinkage pool 42 for one side of fixture block 41, a plurality of shrinkage pool 42 are used for increasing the frictional force between drive shaft 4 and the decorative ring 3 inner wall. In the specific implementation process, the locking arms 31 and the concave holes 42 are staggered up and down along the axial direction of the toothbrush handle 1. The locking arm 31 may be at a level higher than the level of the recess 42, or the locking arm 31 may be at a level lower than the level of the recess 42.

It should be noted that, through decorating ring 3 and the cooperation of drive shaft 4 joint, locking face 311 is laminated with a side wall surface of drive shaft 4, shrinkage pool 42 has increased drive shaft 4 with decorate frictional force between the ring 3 inner wall, and then provide a brush head subassembly, make things convenient for brush head and drive shaft 4 to carry out demountable installation, and promoted the stability of brush head connection, the life of extension brush head.

As shown in fig. 5 to 7, the locking arm 31 is provided with a first inclined surface 312, and the clamping block 41 is provided with a first abutting surface 411 adapted to the first inclined surface 312. It should be noted that, the driving shaft 4 presses the locking arm 31 by abutting the first abutting surface 411 against the first inclined surface 312, so that the driving shaft 4 is conveniently and smoothly inserted into the decorative ring 3.

As shown in fig. 5-7, the first abutment surface 411 is provided in a beveled or cambered surface. It should be noted that, because the first abutting surface 411 is an inclined surface or an arc surface, the driving shaft 4 is inserted into the decorative ring 3 more smoothly, which is convenient for installation and saves labor.

As shown in fig. 5 to 7, the locking arm 31 is provided with a second inclined surface 313, and the clamping block 41 is provided with a second abutting surface 412 abutting against the second inclined surface 313. The second contact surface 412 contacts the second inclined surface 313, so that the drive shaft 4 is easily pulled out from the decorative ring 3.

As shown in fig. 5-7, the second abutment surface 412 is beveled. It should be noted that, because the second abutting surface 412 is an inclined surface, the driving shaft 4 is conveniently pulled out from the decorative ring 3 more smoothly, so that the disassembly is convenient, and the labor is saved.

As shown in fig. 1-5, decorative ring 3 is bonded or ultrasonically welded to handle 1. The toothbrush handle 1 and the decorative ring 3 are firmly installed by bonding or ultrasonic welding the decorative ring 3 and the toothbrush handle 1.

As shown in fig. 5 to 7, the inside of the ornamental ring 3 is provided with a blocking surface 314, and the blocking surface 314 abuts against or is in a gap with the insertion end face of the drive shaft 4. It should be noted that the blocking surface 314 plays a role of blocking, prevents the driving shaft 4 from being excessively inserted, and facilitates sensing that the driving shaft 4 is inserted in place, thereby facilitating the user to install the brush head.

As shown in fig. 1 to 7, the driving shaft 4 and the clamping block 41 are integrally formed. It should be noted that, since the driving shaft 4 and the clamping block 41 are integrally formed, the structure of the driving shaft 4 is more stable.

As shown in fig. 1-7, the decoration ring 3 and the locking arm 31 are integrally formed, and the decoration ring 3 and the locking arm 31 are made of plastic. It should be noted that, the decoration ring 3 and the locking arm 31 are integrally formed, so that the structure of the decoration ring 3 is more stable, the processing is convenient, and the manufacturing cost is reduced.

According to a second aspect, an electric toothbrush comprises an electric toothbrush main body and a brush head assembly according to the first aspect, wherein the electric toothbrush main body is used for controlling the working state of the brush head assembly so as to realize electric tooth brushing.

Working principle: through decorating ring 3 and drive shaft 4 joint cooperation, locking face 311 is laminated with a side wall surface of drive shaft 4, shrinkage pool 42 has increased drive shaft 4 with the frictional force between the 3 inner walls of decorating ring, and then provide a brush head subassembly, make things convenient for brush head and drive shaft 4 to carry out demountable installation, and promoted the stability of brush head connection, the life of extension brush head.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. A brush head assembly, comprising: toothbrush handle (1), a plurality of brush hair (2) are inlayed and are installed to the one end of toothbrush handle (1), be equipped with holding chamber (11) in toothbrush handle (1), holding chamber (11) are used for inlaying and establish installation decoration ring (3), decoration ring (3) and drive shaft (4) joint cooperation, be equipped with on decoration ring (3) have elastic locking arm (31), be equipped with on drive shaft (4) with locking arm (31) joint complex fixture block (41), be equipped with locking face (311) on locking arm (31), locking face (311) with a side wall laminating of drive shaft (4), drive shaft (4) be equipped with a plurality of shrinkage pool (42) for one side of fixture block (41), a plurality of shrinkage pool (42) are used for the increase drive shaft (4) with the frictional force between the inner wall of decoration ring (3).

2. The brush head assembly according to claim 1, characterized in that the locking arm (31) is provided with a first inclined surface (312), and the clamping block (41) is provided with a first abutting surface (411) matched with the first inclined surface (312).

3. The brush head assembly of claim 2, wherein the first abutment surface (411) is provided in a beveled or cambered surface.

4. The brush head assembly according to claim 2, wherein the locking arm (31) is provided with a second inclined surface (313), and the clamping block (41) is provided with a second abutting surface (412) abutting against the second inclined surface (313).

5. The brush head assembly of claim 4, wherein the second abutment surface (412) is beveled.

6. The brush head assembly according to claim 1, characterized in that the decorative ring (3) is glued or ultrasonically welded to the toothbrush handle (1).

7. The brush head assembly according to claim 1, characterized in that a blocking surface (314) is provided in the decorative ring (3), the blocking surface (314) abutting or having a gap with the insertion end face of the drive shaft (4).

8. The brush head assembly according to claim 1 or 7, characterized in that the drive shaft (4) and the cartridge (41) are of an integrally formed construction.

9. A brush head assembly according to any of claims 1-6, characterized in that the decorative ring (3) and the locking arm (31) are of an integrally formed construction, the decorative ring (3) and the locking arm (31) being made of plastic.

10. An electric toothbrush comprising an electric toothbrush host and a brushhead assembly as claimed in any one of claims 1 to 9, the electric toothbrush host being adapted to control the operational state of the brushhead assembly to effect electric brushing.