CN214679078U

CN214679078U - Rotary electric toothbrush gear transmission structure and rotary electric toothbrush

Info

Publication number: CN214679078U
Application number: CN202120521571.5U
Authority: CN
Inventors: 陈昌君; 黄勇胜; 陈鸿志
Original assignee: Shenzhen Hongrong Precision Technology Co ltd
Current assignee: Shenzhen Hongrong Precision Technology Co ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-11-12
Anticipated expiration: 2031-03-12

Abstract

The utility model discloses a rotation type electric toothbrush's gear drive structure, this transmission structure are equipped with motor and drive assembly, drive assembly include with motor output shaft's output gear, with output gear meshing's reduction gear, install in the first carousel of brush on the head and locate reduction gear and brush link assembly between the carousel, output gear is the axial vertical setting with reduction gear, reduction gear's output is equipped with eccentric gear shaft, link assembly's one end and eccentric gear shaft connection, its other end and brush head carousel swing joint drive brush head carousel horizontal rotation. The utility model also discloses a rotation type electric toothbrush who has above-mentioned gear drive structure. The utility model has the characteristics of simple structure, transmission effect are good, the dependable performance, good and with low costs tooth cleanliness.

Description

Rotary electric toothbrush gear transmission structure and rotary electric toothbrush

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electric toothbrush especially relates to a rotation type electric toothbrush gear drive structure and rotation type electric toothbrush.

[ background of the invention ]

Electric toothbrushes can be classified into rotary electric toothbrushes and vibrating electric toothbrushes according to their principles. Among them, the vibration electric toothbrush has a complicated structure and is expensive, and the rotation electric toothbrush is widely used because of its simple structure and low price. Wherein, drive mechanism is the key part of rotation type electric toothbrush, and it is with motor output transmission to brush head to realize the purpose of clean tooth oral cavity. However, the transmission mechanism of the existing rotary electric toothbrush has the problems of high noise, complex structure of the transmission mechanism and the like, and in addition, the driving force is insufficient after the motor output of the existing electric toothbrush is transmitted by the transmission mechanism, so that the tooth cleaning force is insufficient, and the oral hygiene of a user is influenced.

[ Utility model ] content

The utility model aims to solve the problems and provides a gear transmission structure of a rotary electric toothbrush with simple structure, good transmission effect, low noise, reliable performance and good cleanness of teeth.

The utility model also provides a rotation type electric toothbrush who has above-mentioned gear drive structure.

The utility model provides a rotation type electric toothbrush's gear drive structure, this transmission structure are equipped with motor and drive assembly, drive assembly include with motor output shaft's output gear, with output gear meshing's reduction gear, install in the first carousel of brush on the head and locate reduction gear and brush link assembly between the carousel, output gear is the axial vertical setting with reduction gear, reduction gear's output is equipped with eccentric gear shaft, link assembly's one end and eccentric gear shaft connection, its other end and brush head carousel swing joint drive brush head carousel left and right sides rotation.

The motor is a direct current motor, and an output shaft of the motor is vertical to the axial direction of the brush head.

The reducing gear is arranged at one end of the output gear close to the brush head, and the eccentric gear shaft is eccentrically arranged at the output end of the reducing gear.

The connecting rod component comprises a crankshaft, a connecting rod and a brush head driving rod, wherein the input end of the crankshaft is connected with an eccentric gear shaft, the output end of the crankshaft is hinged with one end of the connecting rod through a hinge component, the other end of the connecting rod is connected with the brush head driving rod, and the brush head driving rod moves to drive the brush head rotating disc to rotate left and right through driving an eccentric shaft arranged on the brush head rotating disc.

The hinge assembly comprises a hinge piece and a rotating shaft which are arranged at one end of the crankshaft, and the other end of the crankshaft is provided with a connecting hole for accommodating an eccentric gear shaft.

The brush head driving rod is in a hollow oval shape, a clamping groove with an outward opening and used for being connected with the connecting rod is formed in one end of the brush head driving rod, a protruding block extending outwards is arranged on the side portion of the brush head driving rod, an oval containing hole for the eccentric shaft to move is formed in the middle of the protruding block, the containing hole is communicated with the middle of the brush head driving rod, and the aperture of the containing hole is larger than the outer diameter of the eccentric shaft.

One end of the connecting rod is provided with a circular through hole corresponding to the rotating shaft, the other end of the connecting rod is provided with a clamping block corresponding to the clamping groove, and the middle of the connecting rod is sleeved with a waterproof sleeve.

The brush head rotating disc is circular, a connecting column connected with a brush head is arranged in the middle of the brush head rotating disc, a circular groove is arranged in the middle of one end, provided with an eccentric shaft, of the brush head rotating disc, and a brush head rotating shaft and a reset spring sleeved on the periphery of the brush head rotating shaft are arranged in the circular groove.

The utility model also provides a rotation type electric toothbrush, including brush head, brush holder, battery and any one of the aforesaid a rotation type electric toothbrush's gear drive structure, be equipped with the holding in the brush holder the inner chamber of motor, drive assembly and battery, the drive assembly output is connected with the brush head, motor and battery electric connection.

The outer side of the brush handle is provided with a switch electrically connected with the motor.

The utility model has the advantages that: the utility model discloses an electric toothbrush gear drive structure of rotation type is through being the axial vertical setting with output gear and reduction gear to turn into vertical rotation with the horizontal rotation of the output shaft of motor, turn into straight reciprocating motion output through transmission assembly again, thereby promote the positive and negative reciprocating rotation of brush head carousel, rotate with the drive brush head. The utility model has the characteristics of simple structure, transmission effect are good, the dependable performance, good and with low costs tooth cleanliness.

[ description of the drawings ]

Fig. 1 is a schematic exploded view of the gear transmission structure of the present invention.

Fig. 2 is a left side view of the rotary electric toothbrush of the present invention.

Fig. 3 is a sectional view a-a of fig. 2.

Fig. 4 is a front view of the rotary electric toothbrush of the present invention.

Fig. 5 is a sectional view B-B of fig. 4.

[ detailed description ] embodiments

The following examples are further to explain and supplement the present invention, and do not constitute any limitation to the present invention.

As shown in fig. 1, the gear transmission structure of the rotary electric toothbrush of the present invention includes a motor 10 and a transmission assembly. Wherein, the input end of the transmission component is connected with the output end of the motor 10, and the output end of the transmission component is connected with the brush head.

As shown in fig. 1 to 5, the motor 10 is a dc motor, and an output shaft thereof is perpendicular to an axial direction of the brush head. The transmission assembly comprises an output gear 21, a reduction gear 22, a brush head rotating disc 23 and a connecting rod assembly 24. Wherein, the output gear 21 is meshed with the reduction gear 22, and the connecting rod assembly 24 is used for connecting the reduction gear 22 with the brush head rotating disc 23. Specifically, an output gear 21 is provided at an output end of the motor 10, which is connected to a motor output shaft. The reduction gear 22 is engaged with the output gear 21, and the reduction gear 22 and the output gear 21 are axially and vertically arranged, so that the transverse rotation of the output gear 21 is converted into vertical rotation. In this embodiment, the reduction gear 22 is disposed at an end of the output gear 21 near the brush head. An eccentric gear shaft 221 is provided at the output end of the reduction gear 22. The brush head rotating disc 23 is used for installing a brush head, the brush head rotating disc 23 is circular, a connecting column 232 connected with the brush head is arranged on the brush head rotating disc, a circular groove 233 is arranged in the middle of the brush head rotating disc 23, a brush head rotating shaft 234 and a return spring 235 are arranged in the circular groove 233, and the return spring 235 is sleeved on the periphery of the brush head rotating disc 234 and used for enabling the brush head rotating disc 23 to reset in the rotating process. The connecting rod assembly 24 is used for converting the vertical rotation of the output gear 22 into linear reciprocating motion, and comprises a crankshaft 241, a connecting rod 242 and a brush head driving rod 243, wherein the input end of the crankshaft 241 is connected with an eccentric gear shaft 241 of the reduction gear 22, the output end of the crankshaft is hinged with one end of the connecting rod 242 through a hinge assembly, the other end of the connecting rod is clamped with the brush head driving rod 243, and the brush head driving rod 243 drives the brush head rotating disk 23 to rotate in a positive and negative reciprocating mode. Specifically, one end of the crankshaft 241 is provided with a hinge 244, and the hinge 244 constitutes a hinge assembly with the rotating shaft 245 and the through hole 2421. A circular hole is provided in the hinge 244 to receive the shaft 245. The other end of the crankshaft 241 is provided with a connection hole 2411 for connecting the eccentric gear shaft 221. The connecting rod 242 is a cylindrical rod, and one end of the connecting rod 242 is provided with a circular through hole 2421, the aperture of the circular through hole 2421 corresponds to the outer diameter of the rotating shaft 245, so that the rotating shaft 245 sequentially passes through the circular hole of the hinge 244 and the circular through hole 2421, and the connecting rod 242 is hinged with the crankshaft 241. A latch 2422 is provided at the other end of the connecting rod 242, and the latch 2422 corresponds to the latching groove 2431 of the head driving rod 243, so that the connecting rod 242 is latched with the head driving rod 243. A groove is provided in the middle of the link 242 for connection with a waterproof jacket 247 to prevent water from entering the handle during use and interfering with its use. The brush head driving rod 243 is in a hollow oval shape, the clamping groove 2431 is arranged at one end of the brush head driving rod 243, and the opening of the clamping groove 2431 faces outwards. A protrusion 2432 extending outward is provided at a side portion of the brush head driving rod 243, and a receiving hole 246 for receiving the eccentric shaft 231 of the brush head rotating disk 23 is provided at a middle portion of the protrusion 2432, wherein the receiving hole 246 has an oval shape and is communicated with the middle portion of the brush head driving rod 243, and a diameter of the receiving hole is larger than an outer diameter of the eccentric shaft 231. When the connecting rod 242 makes a linear reciprocating motion, the two side walls of the accommodating hole 246 of the brush head driving rod 243 push the eccentric shaft 231 to move back and forth, thereby driving the brush head rotating disc 23 to rotate left and right.

As shown in fig. 3, 4 and 5, the electric rotary toothbrush of the present invention comprises a brush head 30, a brush handle 40, a battery 50 and the above-mentioned gear transmission structure of the electric rotary toothbrush. Wherein, an inner cavity is arranged in the brush handle 40 and is used for accommodating the motor 10, the transmission assembly and the battery 50. The output end of the transmission assembly is connected with the brush head 30, the brush head 30 in this embodiment is mounted on the brush head rotating disc 23, and the battery 50 is electrically connected with the motor 10 and used for supplying power to the motor 10. The battery 50 may be a rechargeable battery or a common storage battery. A switch 60 is provided on the outside of the handle 40 and is electrically connected to the motor 10 for activating the motor to turn on the electric toothbrush.

As shown in fig. 1, fig. 3 and fig. 5, the working process of the present invention is: the switch 60 is pressed down, the motor 10 is started, the motor 10 drives the output gear 21 to transversely rotate, the output gear 21 drives the reduction gear 22 to vertically rotate, meanwhile, the eccentric gear shaft 221 drives the connecting rod assembly 24 to do linear reciprocating motion, at the moment, the eccentric shaft on the brush head rotating disc 23 is pushed by the two side walls of the containing hole 246 of the brush head driving rod 243 to move back and forth, so that the brush head rotating disc 23 is driven to rotate left and right, the effect of the brush head 30 is realized to rotate, and the purpose of cleaning the oral cavity of teeth is achieved. The utility model has the characteristics of simple structure, transmission effect are good, the dependable performance, good and with low costs tooth cleanliness.

Although the present invention has been described in connection with the above embodiments, the scope of the present invention is not limited thereto, and modifications, replacements, and the like to the above members are all within the scope of the claims of the present invention without departing from the concept of the present invention.

Claims

1. The utility model provides a gear drive structure of rotation type electric toothbrush, its characterized in that, this transmission structure is equipped with motor (10) and drive assembly, drive assembly includes output gear (21) with motor (10) output shaft, reducing gear (22) with output gear (21) meshing, installs brush head carousel (23) on the brush head and locates link assembly (24) between reducing gear (22) and brush head carousel (23), output gear (21) are the axial vertical setting with reducing gear (22), the output of reducing gear (22) is equipped with eccentric gear axle (221), the one end and the eccentric gear axle (221) of link assembly (24) are connected, and its other end and brush head carousel (23) swing joint and drive brush head carousel (23) and rotate about.

2. The gear transmission structure of a rotary type electric toothbrush according to claim 1, wherein the motor (10) is a dc motor having an output shaft perpendicular to the axial direction of the brush head.

3. The gear transmission structure of the rotary type electric toothbrush according to claim 1, wherein the reduction gear (22) is provided at an end of the output gear (21) near the brush head, and the eccentric gear shaft (221) is eccentrically provided at an output end of the reduction gear (22).

4. The gear transmission structure of the rotary electric toothbrush according to claim 1, wherein the connecting rod assembly (24) comprises a crankshaft (241), a connecting rod (242) and a brush head driving rod (243), an input end of the crankshaft (241) is connected with the eccentric gear shaft (221), an output end of the crankshaft is hinged with one end of the connecting rod (242) through a hinge assembly, the other end of the connecting rod (242) is connected with the brush head driving rod (243), and the brush head driving rod (243) drives the brush head rotating disk (23) to rotate left and right by driving an eccentric shaft (231) provided on the brush head rotating disk (23).

5. The gear transmission structure of the rotary electric toothbrush according to claim 4, wherein the hinge assembly comprises a hinge member (244) and a rotation shaft (245) provided at one end of the crank shaft (241), and the other end of the crank shaft (241) is provided with a coupling hole (2411) for receiving the eccentric gear shaft (221).

6. The gear transmission structure of the rotary type electric toothbrush according to claim 5, wherein the brush head driving bar (243) has a hollow oval shape, one end of which is provided with a catching groove (2431) opened outward for connecting the connecting rod (242), the side of the brush head driving bar (243) is provided with a protrusion (2432) extended outward, the middle of the protrusion (2432) is provided with an oval receiving hole (246) for the eccentric shaft (231) to move, the receiving hole (246) is communicated with the middle of the brush head driving bar (243), and the diameter of the receiving hole (246) is larger than the outer diameter of the eccentric shaft (231).

7. The gear transmission structure of the rotary type electric toothbrush according to claim 6, wherein one end of the connecting rod (242) is provided with a circular through hole (2421) corresponding to the rotation shaft (245), the other end thereof is provided with a stopper (2422) corresponding to the stopper groove (2431), and the middle of the connecting rod (242) is sleeved with a waterproof case (247).

8. The gear transmission structure of the rotary electric toothbrush according to claim 1, wherein the brush head rotating disc (23) has a circular shape, a connecting column (232) connected with the brush head is provided at the middle part of the brush head rotating disc (23), a circular groove (233) is provided at the middle part of one end of the brush head rotating disc (23) provided with the eccentric shaft, and a brush head rotating shaft (234) and a return spring (235) sleeved at the periphery of the brush head rotating shaft (234) are provided in the circular groove (233).

9. A rotary electric toothbrush, characterized in that it comprises a brush head (30), a brush handle (40), a battery (50) and the gear transmission structure of the rotary electric toothbrush of any one of claims 1 to 8, wherein the brush handle (40) is provided with an inner cavity for accommodating the motor (10), the transmission assembly and the battery (50), the output end of the transmission assembly is connected with the brush head (30), and the motor (10) is electrically connected with the battery (50).

10. The rotating electric toothbrush according to claim 9, wherein a switch (60) electrically connected to the motor (10) is provided outside the brush shaft (40).