CN221672101U - Electric toothbrush - Google Patents

Abstract

The present application relates to an electric toothbrush, comprising a handle and a brush head, the handle comprising a housing, a sealing component and a core assembly, the core assembly being arranged inside the housing, the core assembly comprising a core bracket and an electric motor arranged on the core bracket, the brush head being detachably connected to a driving shaft of the electric motor; an opening is arranged at the top of the housing, a sealing component is arranged in the opening, the sealing component comprises a fixing part and a sleeve part, the fixing part sealing clamp is arranged between the core bracket and the housing, the sleeve part is provided with a through hole for the driving shaft to pass through, the first end of the sleeve part is sleeved on the driving shaft and is tightened by a gland, and the gland is connected to the driving shaft. The electric toothbrush can reduce the vibration transmission of the driving shaft of the electric motor to the housing, and increase the sealing performance of the driving shaft and the housing.

Description

An electric toothbrush

Technical Field

The present application belongs to the technical field of toothbrushes and relates to an electric toothbrush.

Background Art

Electric toothbrushes mainly use the rapid rotation or vibration of the electric motor to make the toothbrush head vibrate at high frequency, instantly breaking down the toothpaste into fine foam and deeply cleaning the gaps between teeth. In the prior art, the electric motor is usually fixed on the movement bracket, and the drive shaft of the electric motor is connected to the brush head. When the electric motor is running, it will drive the brush head to vibrate at high frequency. When the electric motor is working, it will also drive the outer shell to vibrate at the same time, affecting the user's grip. In addition, the high-frequency vibration of the drive shaft makes its sealing a problem. It is necessary to prevent water from entering the outer shell to avoid damaging the movement components.

Utility Model Content

In order to overcome the problems existing in the related art, the present application aims to provide an electric toothbrush that can reduce the vibration transmission of the driving shaft of the electric motor to the housing and increase the sealing performance between the driving shaft and the housing.

The present application is implemented through the following technical solutions.

The technical solution is an electric toothbrush, comprising a handle and a brush head, wherein the handle comprises a housing sealing component and a core assembly, wherein the core assembly is arranged inside the housing, wherein the core assembly comprises a core bracket and an electric motor arranged on the core bracket, and wherein the brush head is detachably connected to a driving shaft of the electric motor;

An opening is provided on the top of the shell, and the sealing component is provided in the opening. The sealing component includes a fixing portion and a sleeve portion. The fixing portion sealing clamp is provided between the movement bracket and the shell, and the sleeve portion is provided with a through hole for the driving shaft to pass through. The first end of the sleeve portion is sleeved on the driving shaft and tightened by a pressure cover, and the pressure cover is connected to the driving shaft.

The technical effect of this technical solution is to reduce the vibration transmission of the drive shaft to the housing through a specially structured sealing component, while increasing the sealing and waterproof performance of the drive shaft and the housing, thereby improving the user's grip feel.

In one embodiment of the technical solution, an annular groove is formed on the outer wall of the drive shaft, a convex ring matching with the annular groove is formed on the inner wall of the first end of the sleeve portion, and the pressure cover presses the convex ring of the sleeve portion to be confined in the annular groove.

In one embodiment of the technical solution, a slot is further provided on the driving shaft, and the pressure cover is engaged in the slot to prevent the pressure cover from detaching from the driving shaft.

In one embodiment of the technical solution, the diameter of the through hole of the sleeve portion is larger than the diameter of the drive shaft, so that the inner wall of the through hole without a convex ring does not contact the drive shaft.

In one embodiment of the technical solution, a first limiting groove is formed between the second end of the sleeve portion and the fixing portion, and the end of the movement bracket is fitted and placed in the first limiting groove.

In one embodiment of the technical solution, a second limiting groove is formed on a side surface of the fixing portion facing the outer shell, a protrusion is formed on an inner wall of the outer shell, the protrusion is fitted into the second limiting groove, and the movement bracket presses against the other side surface of the fixing portion corresponding to the second limiting groove.

In one embodiment of this technical solution, the sealing component is made of silicone or rubber material.

In one embodiment of the technical solution, the brush head includes a brush rod, bristles arranged at a first end of the brush rod and a decorative ring arranged at the other end of the brush rod, and the decorative ring is fixed as a whole by ultrasonic welding or hot melt connection.

In one embodiment of the technical solution, the movement assembly further includes a control circuit board and a power supply, and the control circuit board and the power supply are both arranged on the movement bracket, and the control circuit board is electrically connected to the electric motor and the power supply respectively.

In one embodiment of the technical solution, the handle also includes a bottom cover arranged on the outer shell for pressing the movement bracket, and the bottom cover is provided with a charging interface or a charging coil, and the charging interface or the charging coil is electrically connected to the power supply.

It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

FIG1 is a schematic diagram of the overall structure of an electric toothbrush shown in an embodiment of the present application.

FIG. 2 is a schematic diagram of the exploded structure of the handle of the electric toothbrush shown in an embodiment of the present application.

FIG3 is a schematic diagram of the cross-sectional structure of the electric toothbrush shown in an embodiment of the present application.

FIG. 4 is a schematic diagram showing an enlarged structure of a portion A of the electric toothbrush.

FIG. 5 is a schematic diagram of the overall structure of the sealing component shown in an embodiment of the present application.

FIG. 6 is a schematic diagram of the cross-sectional structure of the sealing component shown in the embodiment of the present application.

FIG. 7 is a schematic diagram of the structure of the gland shown in an embodiment of the present application.

Description of reference numerals:

1-handle; 11-housing; 111-opening; 112-raised portion; 12-movement assembly; 121-movement bracket; 122-electric motor; 1221-driving shaft; 1222-annular groove; 1223-slot; 13-sealing component; 131-fixing portion; 1311-first limiting groove; 1312-second limiting groove; 132-sleeve portion; 1321-convex ring; 133-through hole; 14-pressing cover; 15-control circuit board; 16-power supply; 17-bottom cover; 18-charging coil; 2-brush head; 21-brush rod; 22-bristles; 23-decorative ring.

DETAILED DESCRIPTION

The following will be combined with the drawings in some embodiments of the present application to clearly and completely describe the technical solutions in some embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

As shown in Figures 1 to 7, this embodiment is an electric toothbrush, including a handle 1 and a brush head 2, the handle 1 includes a shell 11, a sealing component and a movement assembly 12, the movement assembly 12 is arranged inside the shell 11, the movement assembly 12 includes a movement bracket 121 and an electric motor 122 arranged on the movement bracket 121, and the brush head 2 is detachably connected to a drive shaft 1221 of the electric motor 122; an opening 111 is provided at the top of the shell 11, and a sealing component is arranged in the opening 111, the sealing component includes a fixing portion 131 and a sleeve portion 132, the fixing portion 131 is sealingly clamped between the movement bracket 121 and the shell 11, the sleeve portion 132 is provided with a through hole 133 for the drive shaft 1221 to pass through, the first end of the sleeve portion 132 is sleeved on the drive shaft 1221 and is tightened by a pressure cover 14, and the pressure cover is connected to the drive shaft 1221.

In this way, the specially-structured sealing component is used to reduce the vibration transmission of the driving shaft 1221 to the housing 11, while increasing the sealing and waterproof performance of the driving shaft 1221 and the housing 11, thereby improving the grip feel of the user.

In this embodiment, the shell 11 is a cylindrical structure with a chamber, with an opening at its lower end and an opening 111 at its upper end. The driving shaft 1221 of the electric motor 122 extends to the outside of the shell 11 through the opening 111, thereby connecting with the brush head 2. The sealing component is used to seal the opening 111 to prevent liquid from entering the interior of the shell 11 from the opening 111.

In this embodiment, the electric motor 122 includes but is not limited to a vibration motor, an ultrasonic motor, etc. The electric toothbrush can select different motors according to actual needs, and the purpose of the utility model can be achieved. For example, the electric motor 122 adopts the existing technology with publication number CN203539472U, wherein the drive shaft 1221 corresponds to the metal shaft therein. The specific structure of the electric motor 122 is not described in detail in this embodiment.

In this embodiment, the movement bracket 121 is used to install and fix the electric motor 122, the control circuit board 15 and the power supply 16. The movement bracket 121 can be an integrated structure or an assembled structure composed of multiple components. It can be selected and set according to actual needs to achieve the purpose of the utility model.

In this embodiment, an annular groove 1222 is formed on the outer wall of the driving shaft 1221, and a convex ring 1321 matching the annular groove 1222 is formed on the inner wall of the first end of the sleeve portion 132. The gland 14 presses the convex ring 1321 of the sleeve portion 132 tightly and confines it in the annular groove 1222. In order to fix the gland 14, a clamping groove 1223 is further provided on the driving shaft 1221, and the gland 14 is clamped in the clamping groove 1223 to prevent the gland 14 from being separated from the driving shaft 1221. After the gland 14 is installed, its inner surface is pressed against the outer surface of the first end of the sleeve portion 132, and the convex ring 1321 is tightly confined in the annular groove 1222 to prevent the sleeve portion 132 from falling off when the driving shaft 1221 vibrates.

In this embodiment, the diameter of the through hole 133 of the sleeve portion 132 is larger than the diameter of the drive shaft 1221, so that the inner wall of the through hole 133 without the convex ring 1321 does not contact the drive shaft 1221. In this way, the contact between the sealing portion and the drive shaft 1221 can be reduced as much as possible, so as to reduce the vibration transmission of the drive shaft 1221 to the housing 11.

In this embodiment, a first limiting groove 1311 is formed between the second end of the sleeve portion 132 and the fixing portion 131, and the end of the movement bracket 121 is fitted and placed in the first limiting groove 1311. A second limiting groove 1312 is formed on a side surface of the fixing portion 131 facing the housing 11, and a protrusion 112 is formed on the inner wall of the housing 11. The protrusion 112 is fitted and placed in the second limiting groove 1312, and the movement bracket 121 abuts against the other side surface of the fixing portion 131 corresponding to the second limiting groove 1312.

In this way, the fixing portion 131 is more closely matched with the movement bracket 121 and the housing 11, which prevents the fixing portion 131 from being separated and improves the sealing and waterproof performance.

In this embodiment, the sealing component is made of silicone or rubber material.

In this embodiment, a control circuit board 15 and a power supply 16 are also mounted on the movement bracket 121, and the control circuit board 15 is electrically connected to the electric motor 122 and the power supply 16. The control circuit board 15 is provided with control buttons and indicator lights, and buttons corresponding to the control buttons and indicator marks corresponding to the indicator lights are provided on the housing 11. If necessary, a display screen can be integrated on the control circuit board 15, and a window for the display screen is provided on the housing 11.

In this embodiment, the handle 1 also includes a bottom cover 17 arranged on the outer shell 11 for pressing the movement bracket 121. The bottom cover 17 is installed at the lower end opening of the outer shell 11. A charging coil 18 is provided on the bottom cover 17. The charging coil 18 is electrically connected to the power supply 16 through the control circuit board 15. The power supply 16 is a rechargeable battery, and wireless charging can be achieved for the power supply 16 through the charging coil 18.

In this embodiment, the brush head 2 includes a brush rod 21, bristles 22 arranged at the first end of the brush rod 21, and a decorative ring 23 arranged at the other end of the brush rod 21, wherein the decorative ring 23 is fixed as a whole by ultrasonic welding or hot melt connection, and the decorative ring 23 is detachably connected to the drive shaft 1221 of the electric motor 122. The integrated brush head 2 can reduce the noise generated when the brush head 2 vibrates.

The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (7)

1. The electric toothbrush is characterized by comprising a handle and a brush head, wherein the handle comprises a shell, a sealing part and a core assembly, the core assembly is arranged in the shell, the core assembly comprises a core support and an electric motor arranged on the core support, and the brush head is detachably connected with a driving shaft of the electric motor;

The top of the shell is provided with an opening, the sealing part is arranged in the opening, the sealing part comprises a fixing part and a sleeve part, the fixing part is clamped between the machine core bracket and the shell in a sealing way, the sleeve part is provided with a through hole for the driving shaft to pass through, the first end of the sleeve part is sleeved on the driving shaft and is tightly sleeved through a gland, and the gland is connected with the driving shaft;

An annular groove is formed in the outer side wall of the driving shaft, a convex ring matched with the annular groove is formed in the inner wall of the first end of the sleeve part, and the gland tightly presses and limits the convex ring of the sleeve part in the annular groove;

the driving shaft is also provided with a clamping groove, and the gland is clamped in the clamping groove so as to prevent the gland from being separated from the driving shaft;

The diameter of the through hole of the sleeve part is larger than that of the driving shaft, so that the inner wall of the through hole, which is not provided with a convex ring, is not contacted with the driving shaft.

2. The electric toothbrush according to claim 1, wherein a first limit groove is formed between the second end of the sleeve portion and the fixing portion, and an end portion of the cartridge holder is fitted in the first limit groove.

3. The electric toothbrush according to claim 2, wherein a second limit groove is formed in a side surface of the fixing portion facing the housing, a protruding portion is formed in an inner wall of the housing, the protruding portion is fitted in the second limit groove, and the movement holder abuts against the other side surface of the fixing portion corresponding to the second limit groove.

4. The electric toothbrush according to claim 1, wherein the sealing member is made of a silicone or rubber material.

5. The electric toothbrush according to claim 1, wherein the brush head comprises a brush rod, bristles arranged at a first end of the brush rod and a decorative ring arranged at the other end of the brush rod, and the decorative ring is fixed into a whole in an ultrasonic welding mode or a hot melting connection mode.

6. The electric toothbrush of claim 1, wherein the cartridge assembly further comprises a control circuit board and a power source, the control circuit board and the power source being disposed on the cartridge holder, the control circuit board being electrically connected to the electric motor and the power source, respectively.

7. The electric toothbrush according to claim 6, wherein the handle further comprises a bottom cover provided on the housing for pressing the movement holder, and a charging interface or a charging coil is provided on the bottom cover, and the charging interface or the charging coil is electrically connected with the power supply.