阅读说明：本技术 一种刷头减速机构及洁面仪 (Brush head speed reducing mechanism and face cleaning instrument ) 是由 胡荣华 郑友平 于 2018-10-29 设计创作，主要内容包括：本发明提供了一种刷头减速机构,包括：电机、偏摆传动结构、偏摆轴和单向转动传动件；该偏摆传动结构包括一与该电机的输出转轴连动的偏心转动件,以及一受该偏心转动件驱动而摆动的偏摆块；该偏摆轴的一端与偏摆块连动连接,另一端与该单向转动传动件连动连接；该偏摆块带动偏摆轴绕着偏摆轴向做双向摆转运动,该单向转动传动件将双向摆转运动转换为单向转动。本发明还提供了一种装配上述减速机构的洁面仪。本发明所要解决的主要技术问题是提供一种刷头减速机构和装配该结构的洁面仪,减速机构的体积小,结构简单。(The invention provides a brush head speed reducing mechanism, comprising: the device comprises a motor, a deflection transmission structure, a deflection shaft and a unidirectional rotation transmission part; the deflection transmission structure comprises an eccentric rotating part linked with an output rotating shaft of the motor and a deflection block driven by the eccentric rotating part to swing; one end of the deflection shaft is in linkage connection with the deflection block, and the other end of the deflection shaft is in linkage connection with the unidirectional rotation transmission piece; the deflection block drives the deflection shaft to do bidirectional swinging motion around the deflection shaft, and the unidirectional rotating transmission piece converts the bidirectional swinging motion into unidirectional rotation. The invention also provides a face cleaning instrument assembled with the speed reducing mechanism. The invention aims to solve the main technical problem of providing a brush head speed reducing mechanism and a face cleaning instrument with the same, wherein the speed reducing mechanism is small in size and simple in structure.)

1. The utility model provides a brush head reduction gears, includes brush head and reduction gears, its characterized in that, this reduction gears includes: the device comprises a motor, a deflection transmission structure and a deflection shaft;

the deflection transmission structure comprises an eccentric rotating part linked with an output rotating shaft of the motor and a deflection block driven by the eccentric rotating part to swing; one end of the deflection block is connected with the eccentric rotating piece, and the other end of the deflection block is connected with the deflection shaft;

the deflection block drives the deflection shaft to do bidirectional swinging motion around the axial direction of the deflection shaft, and the deflection shaft drives the brush head to move.

2. The brushhead deceleration mechanism of claim 1, wherein: the toothbrush also comprises a unidirectional rotation transmission part, the deflection shaft is connected with the unidirectional rotation transmission part, the unidirectional rotation transmission part is connected with the toothbrush head, and the unidirectional rotation transmission part converts the bidirectional swinging motion of the deflection shaft into unidirectional rotation and then drives the toothbrush head to rotate.

3. The brushhead deceleration mechanism of claim 1, wherein: the eccentric rotating piece is an eccentric wheel, and an eccentric hole of the eccentric rotating piece is in linkage connection with an output rotating shaft of the motor.

4. The brushhead deceleration mechanism of claim 3, wherein: the deflection block is provided with a through hole for accommodating the eccentric wheel in a penetrating way along the direction parallel to the eccentric shaft; the eccentric wheel is propped against the inner side wall of the through hole in the eccentric rotation process to drive the deflection block to deflect.

5. The brushhead deceleration mechanism of claim 4, wherein: the through hole is oval.

6. The brushhead deceleration mechanism of claim 4, wherein: the deflection block is provided with a mounting hole at a position different from the through hole and in a direction parallel to the eccentric shaft, and one end of the deflection shaft is inserted into the mounting hole.

7. The brushhead deceleration mechanism of claim 6, wherein: the mounting hole is a special-shaped hole, and the part of the yaw shaft inserted into the mounting hole is the same as the shape of the special-shaped hole.

8. The brushhead deceleration mechanism of any one of claims 1 to 7, wherein: the unidirectional rotation transmission member is a unidirectional bearing, and the other end of the deflection shaft is inserted into an inner ring of the unidirectional bearing and is tightly matched with the inner ring.

9. A facial cleansing apparatus comprising a housing, a brush head and the brush head deceleration mechanism of claim 8;

the brush head speed reducing mechanism is arranged in the shell, and the bottom of the brush head is tightly matched with the outer side wall of the outer ring of the one-way bearing.

Technical Field

The invention relates to a personal care instrument, in particular to a brush head speed reducing mechanism and a face cleaning instrument.

Background

The electric face cleaning instrument sold in the current market achieves the effect of cleaning the facial skin by driving the brush head. The rotary electric face cleaning instrument has no vibration massage effect, and has large rotary torque force and single rotary direction, thereby causing great damage to facial skin. And the rotating speed of the face cleaning instrument is not too fast, so a speed reducing mechanism is required to be arranged in the face cleaning instrument to reduce the rotating speed. Most of the traditional speed reducing mechanisms are realized by adopting multi-stage gears or worm gears, and have complex structures and large volumes. The face cleaning instrument has larger volume and weight, higher cost and easy damage.

Disclosure of Invention

The invention aims to solve the main technical problem of providing a brush head speed reducing mechanism and a face cleaning instrument with the same, wherein the speed reducing mechanism is small in size and simple in structure.

In order to solve the above technical problem, the present invention provides a brush head speed reduction mechanism, including a brush head and a speed reduction mechanism, the speed reduction mechanism including: the device comprises a motor, a deflection transmission structure and a deflection shaft;

the deflection transmission structure comprises an eccentric rotating part linked with an output rotating shaft of the motor and a deflection block driven by the eccentric rotating part to swing; one end of the deflection block is connected with the eccentric rotating piece, and the other end of the deflection block is connected with the deflection shaft;

the deflection block drives the deflection shaft to do bidirectional swinging motion around the axial direction of the deflection shaft, and the deflection shaft drives the brush head to move.

In a preferred embodiment: the toothbrush also comprises a unidirectional rotation transmission part, the deflection shaft is connected with the unidirectional rotation transmission part, the unidirectional rotation transmission part is connected with the toothbrush head, and the unidirectional rotation transmission part converts the bidirectional swinging motion of the deflection shaft into unidirectional rotation and then drives the toothbrush head to rotate.

In a preferred embodiment: the eccentric rotating piece is an eccentric wheel, and an eccentric hole of the eccentric rotating piece is in linkage connection with an output rotating shaft of the motor.

In a preferred embodiment: the deflection block is provided with a through hole for accommodating the eccentric wheel in a penetrating way along the direction parallel to the eccentric shaft; the eccentric wheel is propped against the inner side wall of the through hole in the eccentric rotation process to drive the deflection block to deflect.

In a preferred embodiment: the through hole is oval.

In a preferred embodiment: the deflection block is provided with a mounting hole at a position different from the through hole and in a direction parallel to the eccentric shaft, and one end of the deflection shaft is inserted into the mounting hole.

In a preferred embodiment: the mounting hole is a special-shaped hole, and the part of the deflection shaft inserted into the mounting hole is the same as the shape of the special-shaped hole.

In a preferred embodiment: the unidirectional rotation transmission member is a unidirectional bearing, and the other end of the deflection shaft is inserted into an inner ring of the unidirectional bearing and is tightly matched with the inner ring.

The invention also provides a face cleaning instrument comprising a housing, and the brush head speed reducing mechanism of claim 8;

the brush head speed reducing mechanism is arranged in the shell, and the bottom of the brush head is tightly matched with the outer side wall of the outer ring of the one-way bearing.

Compared with the prior art, the technical scheme of the invention has the following beneficial effects:

the invention provides a brush head speed reducing mechanism, which drives a deflection shaft to do bidirectional swinging motion around a deflection shaft through a deflection block, and a unidirectional rotation transmission piece converts the bidirectional swinging motion into unidirectional rotation. And then the brush head is driven to rotate in a unidirectional intermittent manner by a unidirectional rotation transmission piece. The brush head speed reducing mechanism has a simpler structure, is beneficial to the light weight and the miniaturization of the face cleaning instrument, and also increases the durability of the face cleaning instrument.

Drawings

FIG. 1 is an exploded view of the structure of the preferred embodiment of the present invention;

fig. 2 is a structural assembly view of a preferred embodiment of the present invention.

Detailed Description

In order to further explain the technical solution of the present invention, the following detailed description is made by specific examples.

Referring to fig. 1-2, a face cleaning instrument comprises a shell, a brush head 1 and a brush head speed reducing mechanism 2;

this brush head reduction gears 2 includes: a motor 21, a deflection transmission structure 22 and a deflection shaft 23;

the deflection transmission structure 22 includes an eccentric rotation member 221 linked with the output rotation shaft of the motor 21, and a deflection block 222 driven by the eccentric rotation member 221 to swing; the eccentric rotation member 221 is eccentrically fixed to an output rotation shaft of the motor 21 to be driven by the rotation shaft to eccentrically rotate. One end of the deflection block 222 is connected to the eccentric rotation member 221, and the other end of the deflection block 222 is connected to the deflection shaft 23; the deflection block 222 drives the deflection shaft 23 to perform a bidirectional swinging motion around the axial direction thereof, and the deflection shaft 23 drives the brush head 1 to move. The brush head speed reducing mechanism 2 has a simpler structure, is beneficial to the light weight and the miniaturization of the face cleaning instrument, and also increases the durability of the face cleaning instrument.

In order to realize the unidirectional rotation of the brush head 1, the present embodiment further includes a unidirectional rotation transmission member 24, the yaw axis 23 is connected to the unidirectional rotation transmission member 4, the unidirectional rotation transmission member 24 is connected to the brush head 1, and the unidirectional rotation transmission member 24 converts the bidirectional yaw motion of the yaw axis 23 into unidirectional rotation and then drives the brush head 1 to rotate.

Specifically, in this embodiment, the eccentric rotating member 221 is an eccentric wheel, and an eccentric hole thereof is linked with an output rotating shaft of the motor 21. Thus, the output shaft of the motor 21 can drive the eccentric wheel to rotate, and the eccentric wheel shows eccentric rotation because the eccentric hole is arranged at the eccentric position of the eccentric wheel.

In order to realize the deflection motion of the deflection block 222, an oval through hole 2221 for accommodating the eccentric wheel is arranged in the deflection block 222 in a direction parallel to the eccentric shaft; the eccentric wheel pushes against the inner sidewall of the through hole 2221 during eccentric rotation to drive the deflection block 222 to deflect.

To mount the yaw shaft 23, the yaw block 222 is penetratingly provided with a mounting hole 2222 in a direction parallel to the eccentric shaft 22 at a position different from the through hole, and one end of the yaw shaft 23 is inserted into the mounting hole 2222.

In order to ensure that the yaw block 222 can drive the yaw shaft 23 to perform a yaw motion, in the embodiment, the mounting hole 2222 is a shaped hole, and a portion of the yaw shaft 23 inserted into the mounting hole 2222 has the same shape as the shaped hole. This prevents the yaw axis 23 from slipping in the mounting hole 2222.

The unidirectional rotation transmission member 24 is a unidirectional bearing, and the other end of the yaw axis 23 is inserted into the inner ring of the unidirectional bearing and tightly fitted therewith. The brush head speed reducing mechanism 2 is arranged in the shell 1, and the bottom of the brush head 1 is tightly matched with the outer side wall of the outer ring of the one-way bearing.

The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art can make insubstantial changes in the technical scope of the present invention within the technical scope of the present invention, and the actions infringe the protection scope of the present invention are included in the present invention.