CN210872162U

CN210872162U - Brush head swing mechanism

Info

Publication number: CN210872162U
Application number: CN201921309533.2U
Authority: CN
Inventors: 袁牧; 滕文权
Original assignee: Xiamen Jieboya Technology Co ltd
Current assignee: Xiamen Jieboya Technology Co ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-06-30
Anticipated expiration: 2029-08-13

Abstract

The utility model discloses a brush head swing mechanism, which is used for driving a brush head to swing relative to a hollow brush rod; the swing mechanism comprises a transmission rod, a hollow brush rod and a swinging rod, wherein the transmission rod is arranged in the hollow brush rod and is used for driving a brush head to rotate; one end of the transmission rod is connected with the motor, and the peripheral wall of the other end of the transmission rod is provided with an annular chute; the connecting seat is internally arranged in the hollow brush rod and is positioned between the transmission rod and the brush head; the connecting seat is connected with the brush head and forms an accommodating part for the transmission rod to be placed in and rotate, and a guide column in sliding fit with the annular chute is formed on the side wall of the accommodating part; the utility model provides a brush head swing mechanism, its simple structure, reasonable in design and easy realization need not extending structure can realize the swing of brush head, and transmission stability is good, difficult inefficacy.

Description

Brush head swing mechanism

Technical Field

The utility model relates to the oral care industry, in particular to a brush head swing mechanism for an electric toothbrush.

Background

At present, most of the existing electric toothbrushes are used for cleaning teeth by driving a brush head to vibrate through a vibration motor; although the tooth cleaning is carried out without great manual operation, the tooth cleaning effect is general, the operation feeling is poor, the noise is large, and the resonance is easy to generate;

in order to solve the problems, research personnel design a rotatable brush head, namely, the brush head is driven to rotate by matching a motor with a complex transmission mechanism; specifically, the motor is connected with a telescopic structure firstly, then the telescopic structure is connected with the connecting rod, and the other end of the connecting rod is eccentrically connected with the back of the brush head; in the mode, the telescopic structure is required to drive the connecting rod to displace along the axial direction of the hollow brush rod, so that more parts and excessively complex structure are required; the connecting rod and the brush head are stressed at a single point, and the rotating effect of the brush head is greatly reduced after a period of time; in addition, the connecting rod is simultaneously stressed by the neck direction and the axial direction in the stretching process, so that the connecting rod is easy to bend, deform and even break; if adopt metallic connecting rod, then produce reaction force easily, damage brush head or extending structure, and weight is overweight, influences user's experience and feels.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the problem in the prior art, provide a brush head swing mechanism, its simple structure, reasonable in design and easy realization need not extending structure and can realize brushing the head swing, and transmission stability is good, difficult inefficacy.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a brush head swing mechanism is used for driving a brush head to swing relative to a hollow brush rod; this swing mechanism includes:

the transmission rod is internally arranged in the hollow brush rod and is used for driving the brush head to rotate; one end of the transmission rod is connected with the motor, and the peripheral wall of the other end of the transmission rod is provided with an annular chute;

the connecting seat is internally arranged in the hollow brush rod and is positioned between the transmission rod and the brush head; the connecting seat is connected with the brush head and forms an accommodating part for the transmission rod to be placed in and rotate, and a guide column in sliding fit with the annular chute is formed on the side wall of the accommodating part;

the transmission rod rotates, the annular chute on the transmission rod rotates along with the transmission rod, and the guide column in the transmission rod is driven to swing, so that the brush head connected with the connecting seat swings relative to the transmission rod.

Furthermore, two guide posts are arranged on the connecting seat and are symmetrically arranged.

Furthermore, the toothbrush also comprises a limiting structure which is used for limiting the toothbrush head to be separated from the hollow toothbrush rod; the limiting structure comprises a limiting column and a limiting chute; the limiting sliding groove is formed in the side wall of the brush head; the limiting column penetrates through the top of the hollow brush rod and is arranged in the limiting sliding groove.

Furthermore, the brush head comprises a brush hair part and an assembly part, the upper side wall of the assembly part is provided with the limiting sliding chute and a groove, and the groove is arranged opposite to the connecting seat; a convex part is formed on the connecting seat; wherein, the bulge is inserted into the groove, so that the connecting seat drives the brush head to move.

Technical scheme for prior art, the beneficial effect who gains is:

(1) the utility model provides a brush head swing mechanism, its simple structure, reasonable in design and easy realization, directly connect the transfer line to the motor, and do the same rotary motion with the motor, save complicated extending structure, when saving the cost, provide more effective transmission, stability is better, be difficult for producing the transmission inefficacy phenomenon; in addition, the novel toothbrush realizes that the transmission rod rotates and the brush head swings in a reciprocating manner, so that teeth can be cleaned in a two-way manner, gaps between the teeth can be cleaned more quickly, and the tooth cleaning effect is better; moreover, the novel transmission rod cannot simultaneously generate radial force and axial force, is not easy to break or deform, and has longer service life;

(2) the utility model is also provided with a limit structure, the brush head is prevented from being separated from the hollow brush rod by utilizing the limit chute and the limit column, and the maximum range of the swing is limited by the length of the limit chute;

(3) the utility model discloses it is more simple to brush first structure, and easy open mould shaping, manufacturing cost is lower, more is applicable to batch production.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic view of a three-dimensional exploded structure of a brush head swing mechanism of the present invention;

FIG. 2 is a sectional view of the brush head swing structure of the present invention;

fig. 3 is an assembly schematic diagram of the connecting seat and the transmission rod of the present invention.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 and 2, the brush head swinging mechanism of the present invention is used for driving a brush head 1 to swing relative to a hollow brush rod 2; this swing mechanism includes:

the transmission rod 3 is arranged in the hollow brush rod 2 and is used for driving the brush head 1 to rotate; one end of the transmission rod 3 is connected with the motor 4, and the peripheral wall of the other end is provided with an annular chute 30;

the connecting seat 5 is arranged in the hollow brush rod 2 and is positioned between the transmission rod 3 and the brush head 1; the connecting seat 5 is connected with the brush head 1 and forms a containing part 50 for the transmission rod 3 to be put in and rotate, and a guide column 51 in sliding fit with the annular chute 30 is formed on the side wall 501 of the containing part 50; in order to realize more uniform stress, double-point force bearing and better and smooth movement, the connecting seat 5 is provided with two guide posts 51, and the two guide posts 51 are symmetrically arranged;

the limiting structure 6 is used for limiting the brush head 1 to be separated from the hollow brush rod 2; the limiting structure 6 comprises a limiting column 61 and a limiting sliding groove 62; the limiting sliding groove 62 is formed in the side wall of the brush head 1; the limiting column 61 penetrates through the top of the hollow brush rod 2 and is arranged in the limiting sliding groove 62;

wherein, the transmission rod 3 rotates, the upper ring-shaped chute 30 rotates along with the rotation, and drives the guide post 51 in the transmission rod to swing, so that the brush head 1 connected with the connecting seat 5 swings relative to the transmission rod 3.

More specifically, the brush head 1 includes a bristle part 11 and an assembly part 12, the upper side wall of the assembly part 12 is provided with the limit chute 62 and a groove 120, and the groove 120 is arranged facing the connecting seat 5; a convex part 52 is formed on the connecting seat 5; wherein, the convex part 52 is inserted into the groove 120, so that the connecting seat 5 drives the brush head 1 to move.

During actual assembly and use, as shown in fig. 1, 2 and 3, firstly, a hollow brush rod 2 is formed by injection molding, the hollow brush rod 2 comprises a first cavity 21 for accommodating the transmission rod 3 and a second cavity 22 for accommodating the assembly part 12 of the brush head 1, and the first cavity 21 and the second cavity 22 are arranged perpendicular to each other; then, the connecting seat 5 is installed from the inlet 220 of the second chamber 22, the transmission rod 3 is inserted from one end of the hollow brush rod 2, and the end of the transmission rod 3 with the annular chute 30 is abutted against the connecting seat 5, at this time, the transmission rod 3 is continuously pushed towards the direction of the second chamber 22, and is guided by the guide surface 31 at the end part of the transmission rod 3, so that the guide post 51 on the connecting seat 5 is placed in the annular chute 30; subsequently, the assembly part 12 of the brush head 1 is arranged corresponding to the connecting seat 5, namely, the groove 120 on the assembly part 12 of the brush head is embedded in the lug boss 52 on the connecting seat 5, then the limiting sliding groove 62 is adjusted to correspond to the through hole 23 at the end part of the hollow brush rod 2, then the limiting column 61 is inserted into the through hole 23, and the part of the limiting column 61 extends into the limiting sliding groove 62; it should be noted that the limiting sliding groove 62 prevents the brush head 1 from falling out of the hollow brush rod 2, so the limiting sliding groove 62 is a long groove formed along the peripheral wall of the assembling portion 12; finally, the hollow brush rod 2 assembled with the swing mechanism is aligned to a brush handle (not shown in the figure) of the electric toothbrush, and the transmission rod 3 is in rotation stopping fit with an output shaft of the motor 4; it should be noted that, in the present invention, the transmission rod 3 is directly connected to the output shaft of the motor 4, and other bridging components can be installed between the two;

during the in-service use, control the part control motor 4 rotation, motor 4 rotates and drives transfer line 3 and rotate, and transfer line 3 rotates, and annular chute 30 rotates along with it on it, because annular chute 30 slope sets up, places the guide post 51 of putting in it in and also moves along with it, because the guide post 51 of symmetry setting swings along with annular chute 30 motion, specifically: because the annular chute 30 is obliquely arranged and has a lowest point and a lowest point, one guide column 51 is positioned at the lowest point and the other guide column 51 is positioned at the highest point during movement, and the brush head 1 rotates for an angle relative to the hollow brush rod 2; the annular chute 30 moves continuously, the guide post 51 which is originally positioned at the lowest point moves towards the highest point, the other guide post 51 slides from the highest point to the lowest point and swings in the opposite direction, and the swinging of the brush head 1 is realized by the reciprocating motion in this way; due to the limitation of the limiting sliding groove 62, the brush head 1 is prevented from falling off, and the swinging angle can be limited.

The utility model provides a brush head swing mechanism, its simple structure, reasonable in design and easy realization, directly connect the transfer line to the motor, and do the same rotary motion with the motor, save complicated extending structure, when saving the cost, provide more effective transmission, stability is better, be difficult for producing the transmission inefficacy phenomenon; in addition, the novel toothbrush realizes that the transmission rod rotates and the brush head swings in a reciprocating manner, so that teeth can be cleaned in a two-way manner, gaps between the teeth can be cleaned more quickly, and the tooth cleaning effect is better; moreover, the novel transmission rod cannot simultaneously generate radial force and axial force, is not easy to break or deform, and has longer service life; the utility model is also provided with a limit structure, the brush head is prevented from being separated from the hollow brush rod by utilizing the limit chute and the limit column, and the maximum range of the swing is limited by the length of the limit chute; the brush head of the utility model has simpler structure, easy mold opening and forming, lower production cost and more suitability for batch production;

while the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A brush head swing mechanism is used for driving a brush head to swing relative to a hollow brush rod; the method is characterized in that: this swing mechanism includes:

2. A brush head oscillating mechanism according to claim 1, wherein: two guide posts are arranged on the connecting seat and are symmetrically arranged.

3. A brush head oscillating mechanism according to claim 1 or 2, wherein: the brush head is used for being separated from the hollow brush rod; the limiting structure comprises a limiting column and a limiting chute; the limiting sliding groove is formed in the side wall of the brush head; the limiting column penetrates through the top of the hollow brush rod and is arranged in the limiting sliding groove.

4. A brush head oscillating mechanism according to claim 3, wherein: the brush head comprises a brush hair part and an assembly part, the upper side wall of the assembly part is provided with the limiting sliding chute and a groove, and the groove is arranged opposite to the connecting seat; a convex part is formed on the connecting seat; wherein, the bulge is inserted into the groove, so that the connecting seat drives the brush head to move.