CN209220560U - Transmission device of an electric toothbrush - Google Patents

Abstract

The utility model discloses a transmission device for an electric toothbrush. The transmission device is connected between a handle part and a brush head of the electric toothbrush. A driving device is arranged inside the handle part. The brush head includes a movable toothbrush plate , the surface of the toothbrush board is provided with toothbrush bristles, the driving device is connected to the handle part through the transmission device, and the driving device drives the toothbrush board to swing back and forth in the brush head in the horizontal direction through the transmission device, so that the toothbrush bristles on the toothbrush board complete brushing action. The electric toothbrush of the utility model has a reasonable structural design, the bristles of the toothbrush are adapted to the mouth shape of the human body, the hands can be freed when brushing teeth, the transmission structure design is simple and ingenious, and the brush head can be driven to swing back and forth along the horizontal direction, driving to surround the teeth The toothbrush brushes teeth back and forth, and has the advantage of being applicable to a wider range of people.

Description

Transmission device of an electric toothbrush

technical field

The invention belongs to the technical field of toothbrushes, in particular to a transmission device of an electric toothbrush.

Background technique

Electric toothbrush is a new product that has appeared in recent years, and it has set off a revolution in the field of oral health care abroad. Although the application of electric toothbrush in my country is not yet popular, existing people predict that it will become an important member of the public health products. Investigations show that electric toothbrushes are more scientific and effective than ordinary toothbrushes, and can more thoroughly remove dental plaque, reduce gingivitis and gum bleeding, and are also generally popular daily necessities in many countries in Europe and the United States.

The electric toothbrush rotates quickly, causing the brush head to vibrate at high frequency, which instantly decomposes the toothpaste into fine foam, deeply cleans the gap between the teeth, and the vibration of the bristles can promote blood circulation in the oral cavity, and has an unexpected massage effect on the gum tissue.

The electric toothbrushes on the market basically all rely on the mode of mechanical vibration to clean the teeth, and the structural shape of the electric toothbrush is mainly still the same as the traditional toothbrush structural shape. Due to the short service life of the brush head, it needs to be replaced frequently. Therefore, the brush head and the brush handle are generally designed to be detachable, so as to replace the brush head. Usually, the power supply and electric control components are arranged in the brush handle. The output shaft is mechanically connected to the brush head to drive the brush head to vibrate. Since the electric toothbrush will vibrate during use, and the brush head and the handle should be easily disassembled, the waterproof seal between the brush head and the handle Handling has always been a technical difficulty in this field, and thus, there is usually no electrical connection between the brush head and the handle.

However, the existing electric toothbrush structure is not much different from the general toothbrush structure shape, and the user needs to hold the brush handle with his hand to brush his teeth, which cannot free his hands, and is especially impractical for people with limited mobility.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the present invention provides a transmission device for an electric toothbrush. The structure design of the transmission device of the electric toothbrush is adapted to the mouth shape of the human body, which can free hands to brush teeth.

In order to achieve the above object, the concrete technical scheme of the transmission device of the electric toothbrush of the present invention is as follows:

A transmission device for an electric toothbrush, the transmission device is connected between the handle part and the brush head of the electric toothbrush, a drive device is arranged inside the handle part, the brush head includes a toothbrush plate that is movable, and the surface of the toothbrush plate Toothbrush bristles are provided, the driving device is connected with the handle part through the transmission device, and the driving device drives the toothbrush board to swing back and forth in the brush head in the horizontal direction through the transmission device, so that the toothbrush bristles on the toothbrush board complete the brushing action.

Further, the driving device includes a driving gear, and the driving gear of the driving device is connected with the transmission device to drive the transmission device to move, and the transmission device further drives the toothbrush plate on the brush head to complete the brushing action.

Further, the transmission device includes an annular guide groove, and a movable plate is embedded inside the annular guide groove, and the movable plate can move vertically relative to the annular guide groove inside the annular guide groove. The middle part of the movable plate is provided with an annular track hole. There is a transmission gear, and the two ends of the circular track hole are provided with a reversing arc guide plate. The reversing arc guide plate can guide the driving gear to move from one side of the circular track hole to the other side, and the driving gear passes through the circular track hole. And mesh with the transmission gear of the annular track hole, the annular guide groove is fixedly connected with the toothbrush plate, when the driving gear rotates, the movable plate is driven to move by the meshed transmission gear, and the movable plate drives the annular guide groove and the toothbrush plate to swing back and forth in the horizontal direction.

Further, the horizontal width of the movable plate is the same as the horizontal width of the slot hole of the annular guide groove, and the vertical height of the movable plate is smaller than the vertical height of the slot hole of the annular guide groove.

Further, an annular channel is provided on the inner edge of the annular guide groove, and the movable plate is embedded in the annular channel of the annular guide groove.

Further, the annular guide groove is rectangular, circular or oval.

Further, the driving gear rotates in situ, and the driving gear causes the transmission device to move relative to each other through the interaction force between the driving gear and the transmission gear.

Further, when the movable plate is located at the center of the annular guide groove, the movable plate and the annular guide groove have a symmetrical structure, and the drive shaft rotates at the center line of the annular guide groove.

Further, the transmission device includes a movable plate, an annular track hole is arranged in the middle of the movable plate, a transmission gear is arranged inside the annular track hole, and a reversing arc-shaped guide plate is arranged at both ends of the annular track hole, and the reversing arc-shaped guide plate can guide the drive gear From one side of the ring track hole to the other side, the driving gear passes through the ring track hole and meshes with the transmission gear of the ring track hole. The movable plate is fixedly connected with the toothbrush plate. When the drive gear rotates, it is driven by the meshing transmission gear. The movable plate moves, and the movable plate drives the toothbrush plate to move in circles along the vertical plane.

Further, the annular guide groove or movable plate of the transmission device and the toothbrush plate are integrally formed.

The electric toothbrush of the present invention has a reasonable structural design, the bristles of the toothbrush are adapted to the mouth shape of the human body, and the hands can be freed when brushing teeth. The toothbrush brushes teeth back and forth, and has the advantage of being applicable to a wider range of people.

Description of drawings

Fig. 1 is the structural representation of electric toothbrush of the present invention;

Fig. 2 is the sectional view of electric toothbrush of the present invention;

Fig. 3 is the exploded structural schematic diagram of electric toothbrush of the present invention;

Fig. 4 is the structural representation of electric toothbrush of the present invention;

5-6 are structural schematic diagrams of the transmission device in the electric toothbrush of the present invention.

Detailed ways

In order to better understand the purpose, structure and function of the present invention, the electric toothbrush of the present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1-4, the electric toothbrush of the present invention includes a handle portion 100 and a brush head portion 200, one end of the handle portion 100 is connected to one end of the brush head portion 200, and a driving device 6 is arranged in the handle portion 100, The driving device 6 can drive the brush head 200 to move, and the brush head 200 can complete the action of brushing teeth during the movement.

The handle portion 100 includes a housing 1 and a driving device 6 arranged inside the housing 1. The driving device 6 may be a speed-regulating motor, and the driving device 6 is connected to the control board 5. Indicator light 3, control panel 5 can control the switch and running speed of speed-regulating motor. Also comprise timing control module on the control panel 5, timing control module can control the time that the speed regulating motor runs and sets. The driving device 6 can be supplied with power by a power supply 2 installed in the casing. The power supply 2 is connected to the speed-regulating motor through the control board 5. The power supply 2 is a detachable power supply or a fixed power supply. The casing is provided with a charging interface 4 to charge the power supply 2. A wireless charging receiving coil 27 can be set on the power supply 2 to provide support for charging the power supply 2 .

The shell of the handle part 100 includes a first half shell and a second half shell, the first half shell and the second half shell are preferably symmetrical structures, and the first half shell and the second half shell can be fastened by Screws are fixed to form the shell of the handle part 100 , and an annular waterproof ring 25 is provided at the junction of the first half shell and the second half shell.

One end of the handle part 100 is connected with the brush head part 200, and the end part connected between the handle part 100 and the brush head part 200 is the connection end of the handle part 100, and the drive shaft of the speed regulating motor extends from the connection end of the handle part 100. The end of the drive shaft is connected with a drive gear 8, and the drive shaft of the speed-regulating motor protruding from the connection end of the handle part 100 is connected with the brush head 200 through the drive gear 8, that is, the drive shaft of the speed-regulating motor is connected through the end. The driving gear 8 is connected with the brush head 200, so as to drive the brush head 200 to move to complete the action of brushing teeth. Preferably, the connecting end of the handle part 100 is provided with a rotating fixed sleeve 23 and a rotating connecting sleeve 24 , the drive shaft of the speed regulating motor protrudes from the rotating fixing sleeve 23 and the rotating connecting sleeve 24 , and is connected with the brush head 200 .

Preferably, the speed regulating motor meshes with the transfer shaft 7 , the transfer shaft 7 meshes with the drive gear 8 , and the output shaft of the speed regulation motor is connected with the drive gear 8 through the transfer shaft 7 . A spring 26 can be sleeved on the adapter shaft 7 .

The brush head 200 includes a U-shaped housing 22, the inner side of the U-shaped housing 22 is movably connected with a toothbrush board, the surface of the toothbrush board is provided with toothbrush bristles 14, the drive shaft of the speed-regulating motor is connected with the toothbrush board through a transmission, and the speed-regulating motor passes through The transmission device drives the toothbrush board to reciprocate in the U-shaped housing 22, thereby completing the action of brushing teeth.

As shown in Figures 5-6, the transmission device includes an annular guide groove 12. The annular guide groove 12 can be rectangular, circular or elliptical. The movable plate 9 is embedded inside the annular guide groove 12, such as the inner ring of the annular guide groove 12. An annular channel is arranged on the side, and the movable plate 9 is embedded in the annular channel of the annular guide groove 12 . The middle part of movable plate 9 is provided with annular orbit hole 10, and annular orbit hole 10 can be ellipse orbit hole, transmission gear is set in annular orbit hole 10, and annular orbit hole 10 two ends are provided with reversing arc guide plate 11, and reversing arc Shaped guide plate 11 can guide driving gear 8 to carry out reversing movement at the end of annular track hole 10. The driving gear 8 passes through the ring track hole 10 and meshes with the transmission gear of the ring track hole 10 . It should be noted that the driving gear 8 keeps rotating in situ, and the driving gear 8 interacts with the transmission gear to make the transmission device move relative to each other.

Preferably, when the movable plate 9 is located at the center of the annular guide groove 12 , the movable plate 9 and the annular guide groove 12 have a symmetrical structure, and the drive shaft rotates near the centerline of the annular guide groove 12 .

Thus, when the drive gear 8 on the drive shaft keeps its original position and rotates, the drive gear 8 on the drive shaft meshes with the transmission gear of the transmission device, thereby driving the movable plate 9 to move in the annular guide groove 12 . When the drive gear 8 moves to the end position of the ring track hole 10 along one side of the ring track hole 10, the drive gear 8 of the reversing arc guide plate 11 guides the drive shaft to move to the other side of the ring track hole 10, When the driving gear 8 moved to the other end of the annular orbit hole 10 along the other side of the annular orbit hole 10, the reversing arc guide plate 11 provided at the other end guided the gear of the drive shaft to move back to the initial side of the annular orbit hole 10 sports.

Because of noting, in order to ensure that the annular guide groove 12 and the toothbrush plate fixedly connected with the annular guide groove 12 only do horizontal reciprocating movement, the width of the movable plate 9 in the horizontal direction is preferably the same as the width of the horizontal direction of the slot hole of the annular guide groove 12, And the vertical height of the movable plate 9 is less than the vertical height of the slot hole of the annular guide groove 12 . This dimensional relationship can ensure that the movable plate 9 only drives the annular guide groove 12 to perform horizontal reciprocating motion.

Thus, the driving gear 8 rotates in the annular track hole 10 provided on the movable plate 9, and the movable plate 9 is driven to move in a vertical circular line in the annular guide groove 12, that is, the movable plate 9 is driven by the gear to move along the circular track. The inner notch of guide groove 12 is done the up and down left and right circle movement of vertical surface, and the width of movable plate 9 horizontal directions is consistent with the horizontal width of annular guide groove 12, and the height of movable plate 9 vertical directions is less than the vertical height of annular guide groove 12. To the height, so that during the circular movement of the movable plate 9 up, down, left, and right, the annular guide groove 12 is driven to reciprocate back and forth in the horizontal plane, that is, to swing horizontally from side to side. The annular guide groove 12 is fixedly connected with the toothbrush plate, so that the drive shaft drives the movable plate 9 to move synchronously to drive the annular guide groove 12 and the toothbrush plate to reciprocate in the horizontal direction, thereby completing the brushing action.

Toothbrush plate comprises front outer tooth toothbrush plate 13 and side outer tooth toothbrush plate 15 and inner tooth toothbrush plate 17, and front outer tooth toothbrush plate 13 and side outer tooth toothbrush plate 15 constitute the U shape of tooth trend, and inner tooth toothbrush plate 17 is also in the shape of U-shaped, the front outer teeth toothbrush plate 13, the side outer teeth toothbrush plate 15 and the inner tooth toothbrush plate 17 are fixedly connected to each other, for example, link to each other through a silica gel connecting piece 18, or the front outer tooth toothbrush plate 13, the side outer tooth toothbrush plate 15 and the inner side The teeth toothbrush plate 17 is integrally formed, so that when the drive shaft drives the transmission device to move, the transmission device drives the front external tooth toothbrush plate 13, the side external tooth toothbrush plate 15 and the inner tooth toothbrush plate 17 to reciprocate in the horizontal direction synchronously, and brushing action.

Preferably, the transmission device and the toothbrush board 13 of the front outer teeth are integrally formed, or the transmission device is integrally formed with the toothbrush board 13 of the front outer teeth, the toothbrush board 15 of the side outer teeth, and the toothbrush board 17 of the inner teeth. In addition, the transmission device, the toothbrush plate 13 of the front outer teeth, the toothbrush plate 15 of the side outer teeth, and the toothbrush plate 17 of the inner teeth can also be detachable connection structures to facilitate the replacement of parts.

U-shaped housing 22, front outer teeth toothbrush plate 13, side outer teeth toothbrush plate 15 and inner tooth toothbrush plate 17 can be made of non-toxic and harmless silica gel material to ensure consumer safety. Both ends of the U-shaped shell 22 of the brush head 200 are provided with an occlusal portion 20, when using the electric toothbrush of the present invention to brush teeth, the internal teeth can be used to occlude the occlusal portion 20 for brushing.

Further, the toothbrush board with toothbrush hair 14 is fixedly connected with the silicone bracket 21, and the silicone bracket 21 is arranged on the inside of the U-shaped housing 22, or the toothbrush bristle 14 can be directly implanted on the silicone bracket 21 to cancel the setting of the toothbrush board. The structural shape of the silicone bracket 21 matches the shape of the oral cavity of the human body. The silicone bracket 21 includes an outer arc edge and an inner arc edge. , the inner toothbrush plate 17 is fixed on the inner arc edge of the silicone bracket 21, so that when the brush head 200 with the silicone bracket 21 is inserted into the oral cavity, the toothbrush plate 13 of the front outer teeth and the toothbrush plate 15 of the side outer teeth The toothbrush bristles 14 on the inner tooth brush plate 17 surround the inner tooth surface.

Further, the silicone bracket 21 can be detachably connected to the U-shaped connecting bracket 16 through the fixing bracket 28, the upper row of teeth 29, and the upper row of teeth fixing sleeve 30, so as to facilitate the replacement of parts.

The toothbrush board arranged on the silicone bracket 21 can be movably connected with the U-shaped housing 22 through the U-shaped connecting bracket 16 , and the inner side of the U-shaped housing 22 is provided with a U-shaped bracket to support the shape of the U-shaped housing 22 .

The use process of the electric toothbrush of the present invention is as follows. Apply toothpaste on the bristles 14 of the electric toothbrush, put the brush head 200 of the electric toothbrush into the user's oral cavity, and the user's teeth bite the occlusal piece of the brush head. The toothbrush bristles 14 on the outer teeth toothbrush plate 13 and the side outer teeth toothbrush plate 15 and the inner tooth toothbrush plate 17 surround the inner and outer sides of the user's entire teeth. Press the handle part 100 power switch, the speed regulating motor starts to start, the speed regulating motor drives the drive gear 8 to rotate, the drive gear 8 moves along the ring track hole 10 of the transmission device, and the drive gear 8 passes through the transmission gear on the ring track hole 10 The movable plate 9 is driven to reciprocate up and down, left and right in the annular guide groove 12, the annular guide groove 12 is fixedly connected with the toothbrush plate 13 of the front outer teeth, the toothbrush plate 13 of the front outer teeth is fixed with the toothbrush plate 15 of the side outer teeth and the toothbrush plate 17 of the inner teeth connected, thereby realizing that the annular guide groove 12 synchronously drives all the toothbrush plates to swing back and forth along the horizontal direction. Like this, the toothbrush hair 14 on the toothbrush plate moves back and forth horizontally to brush teeth.

Therefore, when using the electric toothbrush of the present invention to brush teeth, the user does not need to hold the handle portion 100 of the electric toothbrush to complete the brushing action, freeing both hands. Timing module is arranged in the control board 5, by setting the timing function of the control board 5, thereby setting the brushing time of regulation, as 3 minutes, stop automatically after brushing, more convenient. In addition, the speed value of the speed-regulating motor can be selected by selecting the speed-regulating button, which is convenient for users to adjust the speed according to their own habits.

It can be understood that the present invention is described through some embodiments, and those skilled in the art know that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, the features and examples may be modified to adapt a particular situation and material to the teachings of the invention without departing from the spirit and scope of the invention. Therefore, the present invention is not limited by the specific embodiments disclosed here, and all embodiments falling within the scope of the claims of the present application belong to the protection scope of the present invention.

Claims (10)

1. a kind of transmission device of electric toothbrush, which is characterized in that the transmission device be connected to electric toothbrush shank part and Between brushhead, shank part is internally provided with driving device, and brushhead includes the Toothbrush board of activity setting, and the surface of Toothbrush board is set Bristles are equipped with, driving device is connected by transmission device with shank part, and driving device drives Toothbrush board to exist by transmission device It swings back and forth in the horizontal direction in brushhead, so that the bristles on Toothbrush board complete brushing action.

2. the transmission device of electric toothbrush according to claim 1, which is characterized in that driving device includes driving gear, The driving gear of driving device is connected to drive actuator movement, transmission device and then the tooth for driving brushhead with transmission device Brush board is moved to complete brushing action.

3. the transmission device of electric toothbrush according to claim 2, which is characterized in that transmission device includes annular guide channel, Movable plate is embedded with inside annular guide channel, movable plate can be inside annular guide channel relative to annular guide channel vertical motion, movable plate Middle part be provided with circular orbit hole, circular orbit hole is internally provided with transmission gear, and the both ends in circular orbit hole, which are provided with, to be changed To arc-shaped guide plate, from the side in circular orbit hole, commutation moves to the other side to the bootable driving gear of arc-shaped guide plate that commutates, and drives The transmission gear that gear passes through circular orbit Kong Bingyu circular orbit hole engages, and annular guide channel is fixedly connected with Toothbrush board, drives Movable plate movement is driven by the transmission gear of engagement when gear rotates, movable plate drives annular guide channel and Toothbrush board along level side To swinging back and forth.

4. the transmission device of electric toothbrush according to claim 3, which is characterized in that the width of movable plate horizontal direction with The slot horizontal direction of annular guide channel it is of same size, the height of movable plate vertical direction is less than the slot of annular guide channel side vertically To height.

5. the transmission device of electric toothbrush according to claim 3, which is characterized in that be arranged on the inner ring side of annular guide channel There is annular channel, movable plate is embedded in the annular channel of annular guide channel.

6. the transmission device of electric toothbrush according to claim 3, which is characterized in that annular guide channel is rectangle, is round Or ellipse.

7. the transmission device of electric toothbrush according to claim 3, which is characterized in that driving gear rotates in place, and drives Moving gear makes transmission device that relative motion occur by the mutual power effect engaged with transmission gear.

8. the transmission device of electric toothbrush according to claim 4, which is characterized in that be located at annular guide channel in movable plate When center, movable plate and annular guide channel are symmetrical structure, and drive shaft is located at the midline position rotation of annular guide channel.

9. the transmission device of electric toothbrush according to claim 2, which is characterized in that transmission device includes movable plate, living Circular orbit hole is provided in the middle part of movable plate, circular orbit hole is internally provided with transmission gear, the both ends setting in circular orbit hole There is commutation arc-shaped guide plate, the commutation bootable driving gear of arc-shaped guide plate moves to the other side from the commutation of the side in circular orbit hole, The transmission gear for driving gear to pass through circular orbit Kong Bingyu circular orbit hole engages, and movable plate is fixedly connected with Toothbrush board, drives Movable plate movement is driven by the transmission gear of engagement when moving gear rotates, movable plate drives Toothbrush board to do along vertical plane and draws circle Movement.

10. the transmission device of electric toothbrush according to claim 3 or 9, which is characterized in that the annular guide channel of transmission device Or movable plate is an integral molding structure with Toothbrush board.