CN217310679U

CN217310679U - Novel electric toothbrush

Info

Publication number: CN217310679U
Application number: CN202220264584.3U
Authority: CN
Inventors: 姜淑晗
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-09
Filing date: 2022-02-09
Publication date: 2022-08-30
Anticipated expiration: 2032-02-09

Abstract

The utility model discloses a novel electric toothbrush, which comprises a brush handle and a brush head, wherein the brush handle comprises a brush handle shell and a power supply and a driving device which are arranged inside the brush handle, the brush head comprises a brush head shell and two parallel installation shaft levers which are arranged inside the brush head shell, a plurality of brush hair components are sleeved on the installation shaft levers, each brush hair component comprises a connecting seat and brush hair which is arranged on the connecting seat, the connecting seats are L-shaped, the installation directions of the connecting seats on the two installation shaft levers are opposite, the connecting seats on the same installation shaft lever are mutually butted, the free ends of the brush hair extend to the outside of the brush head shell, one end of the installation shaft lever is provided with a connecting shaft lever, one end of the connecting shaft lever is arranged inside the brush handle shell, the driving device is used for driving the connecting shaft lever to rotate back and forth, the utility model has stable structure, low production cost, good waterproof effect and long service life, the brush hair is driven by mechanical transmission to swing up and down in a high-speed arc shape, can effectively remove tartar and deep-hidden stains in slits between teeth, and has strong practicability.

Description

Novel electric toothbrush

Technical Field

The utility model belongs to the technical field of electric toothbrush technique and specifically relates to a novel electric toothbrush is related to.

Background

The electric toothbrush makes the brush head generate high-frequency vibration through the quick rotation or vibration of the motor core, instantaneously decomposes the toothpaste into fine foam to deeply clean slits between teeth, and simultaneously, the vibration of the brush hair can promote the blood circulation of the oral cavity and has a massage effect on gum tissues.

From the principle of tooth brushing, the electric toothbrushes on the market at present are mainly divided into two types, namely rotation and vibration. The principle of the rotary toothbrush is simple, namely the motor drives the circular brush head to rotate, the friction effect is enhanced while the common tooth brushing action is carried out, the rotary toothbrush is high in strength, the tooth surface is cleaned completely, the teeth are relatively weak in cleaning, but the rotary toothbrush is large in abrasion to teeth, and long-term use is not recommended. In addition, the vibrating toothbrush is complex in structure, the tooth surface and the tooth gaps are cleaned mainly through high-frequency vibration of the motor, although the cleaning effect is relatively good, the production cost is high, the price is relatively high, and market popularization cannot be well carried out.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the utility model provides a novel electric toothbrush.

The utility model adopts the technical proposal that: a novel electric toothbrush comprises a brush handle and a brush head, wherein the brush handle comprises a brush handle shell, and a power supply and a driving device which are arranged inside the brush handle shell, the power supply is used for supplying power to the driving device, the brush head comprises a brush head shell and two parallel installation shaft levers which are arranged inside the brush head shell, a plurality of brush hair components are sleeved on the installation shaft levers, each brush hair component comprises a connecting seat and brush hair arranged on the connecting seat, an inserting hole is arranged on the connecting seat in a penetrating way, the installation shaft levers and the inserting holes are matched and inserted, the connecting seats are L-shaped, the installation directions of the connecting seats on the two installation shaft levers are opposite, the connecting seats on the same installation shaft lever are mutually abutted, the free ends of the brush hair extend to the outside of the brush head shell, and the brush hair on the two installation shaft levers are mutually staggered along the axial direction of the installation shaft levers, the brush handle is characterized in that a connecting shaft rod is arranged at one end of the mounting shaft rod, one end, far away from the mounting shaft rod, of the connecting shaft rod is located inside the brush handle shell, and the driving device is used for driving the connecting shaft rod to rotate back and forth.

Preferably, the driving device includes a reduction motor, a gear assembly, a driving block and a driven block, the driven block is fixedly mounted at one end of the connecting shaft rod far away from the mounting shaft rod, a return spring is arranged between the driven block and the brush handle shell, the reduction motor and the gear assembly are connected with each other, the reduction motor is used for driving the gear assembly to rotate, the driving block is fixedly mounted on the gear assembly, the driving block performs circular motion along with the rotation of the gear assembly, one end of the driven block far away from the mounting shaft rod is located on a top end rotation track of the driving block, the driving block respectively collides with two driven blocks once per rotation of one circle, the two driven blocks respectively rotate along the radial direction of the connecting shaft rod under the driving of the driving block, and in the process that the driven blocks are driven to rotate by the driving block, the two driven blocks rotate in opposite directions, and the reset spring is used for resetting the driven blocks after rotation.

Preferably, the cross section of the mounting shaft rod is a regular hexagon, the cross section of the connecting shaft rod is a circle, and the mounting shaft rod and the connecting shaft rod are integrally formed.

It should be noted that, the mounting shaft is designed into a regular hexagonal prism, which can effectively prevent the bristle component from rotating after being sleeved on the mounting shaft.

Preferably, two sets of limiting clamping structures are arranged between the two mounting shaft rods, and the bristle assemblies are located between the two sets of limiting clamping structures.

Be equipped with the brush hair swing on the connecting seat that is the L type and let a mouthful, when the brush hair subassembly was installed on the installation axostylus axostyle, because the installation opposite direction of the connecting seat on two installation axostylus axostyles, consequently, a plurality of brush hair swing on two installation axostylus axostyles lets a mouthful and the brush hair all is axial dislocation set, when the brush hair took place to swing, the dislocation can take place for the brush hair on two installation axostylus axostyles, and the root of brush hair can swing this moment and let in the mouth to the brush hair swing. Spacing joint structure is used for making further spacing to the brush hair subassembly, spacing joint structure here generally is dop and cassette, dop and cassette are fixed the setting respectively on two installation axostylus axostyles, in the equipment process, when all brush hair subassemblies all cup joint and install on the installation axostylus axostyle, dop and cassette on two sets of spacing joint structures correspond the joint, realize spacing to all brush hair subassemblies, after the installation finishes like this, any axial not hard up or displacement just can not take place for all brush hair subassemblies.

Preferably, the brush head shell is provided with two rows of mutually parallel bristle abdicating holes, the two rows of bristle abdicating holes are arranged along the axial direction of the mounting shaft rod, and the bristles are respectively inserted into the bristle abdicating holes in a one-to-one correspondence manner.

Preferably, the brush handle shell is internally and fixedly provided with a shaft seat, the connecting shaft rod is installed on the shaft seat in a matching manner, and the shaft seat design can enable the connecting shaft rod to rotate more smoothly and stably.

Preferably, the top of the driving block is an arc-shaped head, the top of the driven block and the top of the driving block are provided with arc-shaped transition positions at staggered positions, and when the top of the driving block rotates to contact with the driven block, the arc-shaped head is abutted to the arc-shaped transition positions. When the top of the driving block contacts the driven block, the driven block can be acted by an upward force and drive the connecting shaft lever to rotate.

Preferably, one end of the brush handle shell, which is far away from the brush head shell, is provided with a power switch and a charging hole, the power switch and the charging hole are connected with a power supply through an electric connection line, and the driving device is connected with a gear controller. A handle concave position is arranged on a common brush handle shell, so that the brush handle can be held more conveniently.

More preferably, one end of the brush handle shell, which is far away from the brush head shell, is in threaded connection with a waterproof rear cover, and a sealing ring is arranged at the connecting end of the connecting shaft rod and the brush handle shell.

Through the design of above-mentioned technical scheme, the design of lid and sealing washer after waterproof can prevent effectively that there is water to enter into the brush holder shell brushing one's teeth and washing one's face and rinsing one's mouth in-process, when needs start electric toothbrush, only need the waterproof back lid of spiral shell division, press switch can to the design of gear controller can be so that the slew velocity through control gear motor comes from the work gear by the adjustment toothbrush. In actual operation, the gear controller can be controlled only by pressing the power switch for multiple times.

The working principle is as follows: press switch, the power circular telegram, the power generally is rechargeable lithium cell, the power is supplied power for gear motor, gear motor passes through the gear assembly and drives the initiative piece and carry out high frequency circular motion, the round is every rotated to the initiative piece, the arc head on its top can be contradicted respectively two arc transition positions of connecting the driven part on the axostylus axostyle once, and then drive the trend that the driven part produced the upward movement, the reset spring who connects at the driven part at this moment truns into compression state (reset spring's the other end is installed on brush holder shell inner wall gradually by normal condition). When the driven block moves upwards, the driving block is separated from the driven block, the driven block can be subjected to the opposite acting force given by the return spring at the moment, the driven block moves reversely after stopping moving until the driven block returns to the original position, and the return spring returns to the normal state. Because the driven piece is fixed connection with the connecting shaft pole, and because two connecting shaft pole distances are close, the time interval that the initiative piece contacted two driven pieces in proper order is extremely short, therefore the motion of driven piece can drive two connecting shaft pole and rotate towards opposite direction respectively almost simultaneously to reset, every initiative piece is circular motion once, just the rotation of the less range of reversal is once for two connecting shaft pole. At this moment and connect and also can rotate in step at connecting axostylus axostyle one end installation axostylus axostyle, because the cross section of installation axostylus axostyle is regular hexagon, consequently, the rotation of installation axostylus axostyle can drive cup joint the brush hair subassembly on the installation axostylus axostyle and take place to rotate, and then make the brush hair produce curved luffing motion in the brush hair hole of stepping down, and because brush hair and the brush hair swing on two installation axostylus axostyles let the mouth all along axial dislocation set, when the brush hair swing, the brush hair on two installation axostylus axostyles can be crisscross each other, and the root of brush hair can swing to the brush hair swing and let in the mouth, consequently, the swing of multiunit brush hair can not influence each other, and can effectually clean the slit between the tooth.

Compared with the prior art, the utility model, it has following beneficial effect: the utility model discloses stable in structure, low in production cost, water-proof effects is good, and long service life carries out high-speed arc form luffing motion through mechanical drive brush hair, can effectually get rid of the dark spot of hiding in tartar and the slit between teeth, and the practicality is strong.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a simplified diagram of the internal structure of the present invention;

FIG. 2 is an enlarged partial view of portion A of FIG. 1;

FIG. 3 is an enlarged view of a portion B of FIG. 1;

fig. 4 is a side view of the driving device of the present invention;

fig. 5 is a schematic plan view of the non-contact state of the driving block and the driven block in the present invention;

FIG. 6 is a schematic plan view illustrating the rotation of the driving block pressing one of the driven blocks;

FIG. 7 is a block diagram of a connecting shaft and mounting shaft according to the present invention;

FIG. 8 is a schematic plan view of a bristle sub-assembly of the present invention;

FIG. 9 is a schematic plan view of the side of the brush head housing on which the bristles are mounted;

FIG. 10 is a schematic plan view of the rear end of the brush handle housing of the present invention;

FIG. 11 is a side view of a bristle sub-assembly of the present invention

Fig. 12 is a simplified plan view of two mounting shafts and bristle sub-assemblies mounted thereon in accordance with the present invention.

In the drawings are labeled: 1-brush handle shell, 101-handle concave position, 2-brush head shell, 201-bristle abdication hole, 3-power supply, 4-driving device, 401-reducing motor, 402-driving block, 4021-arc head, 403-driven block, 4031-arc transition position, 5-connecting shaft rod, 6-mounting shaft rod, 7-bristle component, 701-connecting seat, 702-plug hole, 703-bristle, 704-bristle swing abdication port, 8-reset spring, 9-power switch, 10-charging hole, 11-waterproof rear cover, 12-shaft seat, 13-clamping head, 14-clamping seat, 15-gear controller, 16-sealing ring and a-top end rotation track of driving block.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The specific implementation scheme is as follows: referring to fig. 1-12, the utility model relates to a novel electric toothbrush, which comprises a brush handle and a brush head, wherein the brush handle comprises a handle shell 1, a power supply 3 and a driving device 4 which are arranged inside the handle shell 1, the power supply 3 is used for supplying power to the driving device 4, the brush head comprises a brush head shell 2 and two parallel installation shaft levers 6 which are arranged inside the brush head shell 2, a plurality of brush hair components 7 are sleeved on the installation shaft levers 6, each brush hair component 7 comprises a connecting seat 701 and brush hair 703 which is arranged on the connecting seat 701, a plugging hole 702 is arranged on the connecting seat 701 in a penetrating way, the installation shaft levers 6 and the plugging hole 702 are matched and plugged, the connecting seats 701 are in an L shape, the installation directions of the connecting seats 701 on the two installation shaft levers 6 are opposite, the connecting seats 701 on the same installation shaft lever 6 are mutually abutted, the free ends of the brush hair 703 extend to the outside of the brush head shell 2, the brush hair 703 on the two installation shaft levers 6 are mutually staggered along the axial direction of the installation shaft levers 6, the connecting shaft rod 5 is arranged at one end of the mounting shaft rod 6, one end, far away from the mounting shaft rod 6, of the connecting shaft rod 5 is located inside the brush handle shell 1, and the driving device 4 is used for driving the connecting shaft rod 5 to rotate back and forth.

Preferably, the driving device 4 comprises a speed reducing motor 401, a gear assembly, a driving block 402 and a driven block 403, the driven block 403 is fixedly installed at one end of the connecting shaft rod 5 far away from the mounting shaft rod 6, a return spring 8 is arranged between the driven block 403 and the brush holder shell 1, the speed reducing motor 401 and the gear assembly are connected with each other, the speed reducing motor 401 is used for driving the gear assembly to rotate, the driving block 402 is fixedly installed on the gear assembly, the driving block 402 performs circular motion along with the rotation of the gear assembly, one end of the driven block 403 far away from the mounting shaft rod 6 is located on the top rotation track of the driving block 402, the driving block 402 respectively collides with two driven blocks 403 once per rotation, the two driven blocks 403 respectively rotate along the radial direction of the connecting shaft rod 6 under the driving of the driving block 402, and the rotation directions of the two driven blocks 403 are opposite during the rotation of the driven block 403 driven by the driving block 402, the return spring 8 is used for returning the driven piece 403 after rotation.

As a preferred embodiment of this embodiment, the cross section of the mounting shaft 6 is a regular hexagon, the cross section of the connecting shaft 5 is a circle, and the mounting shaft 6 and the connecting shaft 5 are integrally formed.

It should be noted that, the mounting shaft 6 is designed as a regular hexagonal prism, which can effectively prevent the bristle assembly 7 from rotating after being sleeved on the mounting shaft 6.

In this implementation, be equipped with two sets of spacing joint structures between two installation axostylus axostyles 6, brush hair subassembly 7 all is located between two sets of spacing joint structures.

Referring to fig. 2 and 12, a bristle swing allowance opening 704 is formed in the L-shaped connecting seat 701, when the bristle assembly 7 is installed on the installation shaft 6, because the installation directions of the connecting seats 701 on the two installation shafts 6 are opposite, the bristle swing allowance openings 704 and the bristles 703 on the two installation shafts 6 are axially staggered, when the bristles 703 swing, the bristles 703 on the two installation shafts 6 are staggered, and at this time, the roots of the bristles 703 swing to the bristle swing allowance opening 704. The limiting clamping structure is used for further limiting the bristle assemblies 7, generally comprises clamping heads 13 and clamping seats 14, wherein the clamping heads 13 and the clamping seats 14 are fixedly arranged on the two mounting shaft rods 6 respectively, when all the bristle assemblies 7 are sleeved and mounted on the mounting shaft rods 6 in the assembling process, the clamping heads 13 and the clamping seats 14 on the two limiting clamping structures are correspondingly clamped, limiting of all the bristle assemblies 7 is achieved, and therefore after mounting is finished, all the bristle assemblies 7 cannot be loosened or displaced in any axial direction.

In this embodiment, two rows of bristle relief holes 201 parallel to each other are formed in the brush head housing 2, the two rows of bristle relief holes 201 are axially arranged along the mounting shaft 6, and the bristles 703 are respectively inserted into the bristle relief holes 201 in a one-to-one correspondence manner.

Moreover, the shaft seat 12 is fixedly arranged inside the brush holder shell 1, the connecting shaft rod 5 is installed on the shaft seat 12 in a matching mode, and the shaft seat 12 is designed to enable the connecting shaft rod 5 to rotate more smoothly and stably.

Referring to fig. 5 and 6, the top end of the driving block 402 is an arc head 4021, the rotation tracks of the top ends of the driven block 403 and the driving block 402 are staggered to form an arc transition position 4031, and when the top end of the driving block 402 rotates to contact the driven block 403, the arc head 4021 abuts against the arc transition position 4031. When the top end of the driving block 402 contacts the driven block 403, the driven block 403 is forced upward and rotates the connecting shaft 5.

Then, the end of the brush handle shell 1 far from the brush head shell 2 is provided with a power switch 9 and a charging hole 10, the power switch 9 and the charging hole 10 are connected with the power supply 3 through an electric wiring, and the driving device 4 is connected with a gear controller 15. A handle concave part 101 is arranged on the common brush handle shell 1, so that the brush handle can be held more conveniently.

More specifically, one end of the brush handle shell 1 far away from the brush head shell 2 is in threaded connection with a waterproof rear cover 11, and a sealing ring 16 is arranged at the connecting end for connecting the shaft rod 5 and the brush handle shell 1.

Through the design of the technical scheme, the waterproof rear cover 11 and the sealing ring 16 are designed to effectively prevent water from entering the brush holder shell 1 in the process of brushing teeth and washing face, when the electric toothbrush needs to be started, only the waterproof rear cover 11 needs to be screwed on, and the power switch 9 is pressed, and the design of the gear controller 15 can enable the rotation speed of the speed reducing motor 401 to be controlled to come from the working gear of the toothbrush to be adjusted. In actual operation, the gear controller 15 can be controlled by pressing the power switch 9 several times.

The working principle is as follows: pressing switch 9, power 3 circular telegram, power 3 generally is rechargeable lithium cell, power 3 supplies power for gear motor 401, gear motor 401 passes through the gear assembly and drives initiative piece 402 and carry out high frequency circular motion, every rotation round of initiative piece 402, the arc head on its top can 4021 contradict respectively to the arc transition position 4031 of the driven piece 403 on two connecting shaft poles 5 once, and then drive driven piece 403 and produce the trend of upward movement, the reset spring of connection at driven piece 403 turns into compression state (the other end of reset spring 8 is installed on brush handle shell 1 inner wall by 8 normal conditions gradually this moment). When the driven block 403 moves upwards, the driving block 402 is separated from the driven block 403, and the driven block 403 is under the opposite action force given by the return spring 8, and after the motion is stopped, the driven block moves in the reverse direction until the driven block returns to the original position, and the return spring 8 returns to the normal state. Because the driven blocks 403 are fixedly connected with the connecting shaft rods 5, and because the distance between the two connecting shaft rods 5 is close, the time interval between the driving blocks 402 sequentially contacting the two driven blocks 403 is extremely short, so the motion of the driven blocks 403 can drive the two connecting shaft rods 5 to rotate in opposite directions almost simultaneously and reset, and every driving block 40 does circular motion, and the two connecting shaft rods 5 rotate in forward and reverse directions by a small amplitude. At this moment and connect and also can rotate in step at connecting 5 one ends of axostylus axostyle installation axostyle 6, because the cross section of installation axostylus axostyle 6 is regular hexagon, consequently, the rotation of installation axostylus axostyle 6 can drive the brush hair subassembly 7 of cup jointing on installation axostylus axostyle 6 and take place to rotate, and then make brush hair 703 produce curved luffing motion in the brush hair hole 201 of stepping down, and because brush hair 703 and the brush hair swing on two installation axostylus axostyles 6 let a mouthful 704 all along axial dislocation set, when brush hair 703 swings, brush hair 703 on two installation axostylus axostyles 6 can be crisscross each other, and the root of brush hair 703 can swing to the brush hair swing let in mouthful 704, consequently, the swing of multiunit brush hair 703 can not exert an influence each other, and can effectually clean the slit between the tooth.

The utility model discloses a novel electric toothbrush is above only do the preferred embodiment of the utility model discloses a not therefore the restriction the utility model discloses a patent range all is in the utility model discloses an under the inventive concept, utilize the equivalent structure transform that the contents of the description and the attached drawing do, or direct/indirect application all is included in other relevant technical field the utility model discloses a within the scope is protected to the patent.

Claims

1. A novel electric toothbrush comprises a brush handle and a brush head, and is characterized in that the brush handle comprises a brush handle shell, and a power supply and a driving device which are arranged in the brush handle shell, the power supply is used for supplying power for the driving device, the brush head comprises a brush head shell and two parallel installation shaft levers which are arranged in the brush head shell, a plurality of brush hair components are sleeved on the installation shaft levers, each brush hair component comprises a connecting seat and brush hair arranged on the connecting seat, an inserting hole is arranged on the connecting seat in a penetrating way, the installation shaft levers and the inserting holes are matched and inserted, the connecting seats are L-shaped, the installation directions of the connecting seats on the two installation shaft levers are opposite, the connecting seats on the same installation shaft lever are mutually abutted, the free ends of the brush hair extend to the outside of the brush head shell, and the brush hair on the two installation shaft levers are mutually arranged along the axial direction of the installation shaft levers in a staggered way, the brush handle is characterized in that a connecting shaft rod is arranged at one end of the mounting shaft rod, one end, far away from the mounting shaft rod, of the connecting shaft rod is located inside the brush handle shell, and the driving device is used for driving the connecting shaft rod to rotate back and forth.

2. The novel electric toothbrush according to claim 1, wherein the driving device comprises a decelerating motor, a gear assembly, a driving block, and a driven block, the driven block is fixedly installed at an end of the connecting shaft rod away from the mounting shaft rod, a return spring is disposed between the driven block and the brush handle shell, the decelerating motor and the gear assembly are connected to each other, the decelerating motor is used for driving the gear assembly to rotate, the driving block is fixedly installed on the gear assembly, the driving block performs a circular motion along with the rotation of the gear assembly, an end of the driven block away from the mounting shaft rod is located on a top end rotation track of the driving block, the driving block respectively collides with the two driven blocks once per rotation, the two driven blocks respectively rotate along a radial direction of the connecting shaft rod under the driving of the driving block, and in the process that the driven blocks are driven by the driving blocks to rotate, the rotation directions of the two driven blocks are opposite, and the reset spring is used for resetting the driven blocks after the driven blocks rotate.

3. The novel electric toothbrush according to any one of claims 1-2, wherein the cross section of the mounting shaft is regular hexagon, the cross section of the connecting shaft is circular, and the mounting shaft and the connecting shaft are integrally formed.

4. The novel electric toothbrush according to claim 3, wherein two sets of limiting clamping structures are arranged between the two mounting shafts, and the bristle assembly is located between the two sets of limiting clamping structures.

5. The novel electric toothbrush according to claim 1, wherein the brush head housing is provided with two rows of bristle relief holes parallel to each other, the two rows of bristle relief holes are arranged along the axial direction of the mounting shaft, and the bristles are respectively inserted into the bristle relief holes in a one-to-one correspondence.

6. The new electric toothbrush as claimed in claim 1, wherein a shaft seat is fixed inside the handle housing, and the connecting shaft is fittingly mounted on the shaft seat.

7. The novel electric toothbrush according to claim 2, wherein the top end of the driving block is an arc-shaped head, the top ends of the driven block and the driving block are provided with arc-shaped transition positions at staggered positions, and when the top end of the driving block rotates to contact with the driven block, the arc-shaped head abuts against the arc-shaped transition positions.

8. The novel electric toothbrush according to claim 2, wherein a power switch and a charging hole are arranged at one end of the brush handle shell far away from the brush head shell, the power switch and the charging hole are connected with a power supply through electric wiring, and the driving device is connected with a gear controller.

9. The novel electric toothbrush according to claim 1, wherein a waterproof rear cover is screwed to one end of the brush handle shell away from the brush head shell, and a sealing ring is arranged at the connecting end of the connecting shaft rod and the brush handle shell.