CN216603159U - Electric toothbrush - Google Patents

Abstract

This patent relates to an electric toothbrush comprising: a brush head; the brush handle is internally provided with a cavity, and a Hall switch is arranged in the cavity; a lever partially located inside the cavity of the handle, the lever including a fulcrum, the fulcrum being rotatably disposed in the cavity; one end of the lever positioned on one side of the fulcrum extends out of the chamber and is connected with the brush head; and a magnet is arranged at the other end of the lever positioned at the other side of the fulcrum, and the magnet is opposite to the Hall switch.

Description

Electric toothbrush

Technical Field

The utility model belongs to the technical field of oral care, and relates to an electric toothbrush.

Background

Compared with a common toothbrush, the electric toothbrush can clean oral teeth more efficiently and quickly, but the electric toothbrush cannot control the force used for brushing the teeth independently like a common manual toothbrush.

Some prior art solutions have only electric toothbrushes with a single brushing power, i.e. the amplitude is not adjustable. Such electric toothbrushes provide only a single force, are inflexible, and may cause damage to the teeth and gums.

Other technical scheme among the prior art can regulate and control the electric toothbrush of dynamics of brushing teeth has a plurality of fender position, need independently adjust the fender position according to self condition through user's manual operation in order to reach suitable dynamics of brushing teeth. Although such electric toothbrushes have different manual tapping positions for different groups of users and different tooth conditions, only manual adjustment is possible; the manual operation selects the gear to increase the complexity of using the toothbrush, and influences the use convenience. In addition, the pressure sensitivity of the light-touch gear switch is not high, so that the switch induction is limited when a user adjusts the switch, and the gear adjustment cannot be performed in time; and the touch switch can reduce the sensing flexibility of the gear switch after being used for a long time, damage to the electric toothbrush to a certain extent is caused, and the service life of the electric toothbrush is influenced.

Technical solutions for sensing brushing strength using hall switches also appear in the prior art, but the structural arrangement for triggering the hall switches in these technical solutions is not reasonable enough, and the spatial layout of the toothbrush is affected, thereby affecting one or more of the size, function, or experience of the consumer in use of the toothbrush.

SUMMERY OF THE UTILITY MODEL

The problem to be solved by the patent is to provide an electric toothbrush to improve the utilization efficiency of the inner space of the brush body. The purpose of the utility model is realized as follows:

an electric toothbrush, comprising: a brush head; the brush handle is internally provided with a cavity, and a Hall switch is arranged in the cavity; a lever partially located inside the cavity of the handle, the lever including a fulcrum, the fulcrum being rotatably disposed in the cavity; one end of the lever positioned on one side of the fulcrum extends out of the chamber and is connected with the brush head; and a magnet is arranged at the other end of the lever positioned at the other side of the fulcrum, and the magnet is opposite to the Hall switch.

Preferably, one end of the lever, which is provided with the magnet, is further provided with a spring, and when the brush head is stressed to press the magnet to the hall switch, the spring applies force to the lever to push the magnet away from the hall switch.

Preferably, the lever includes a motor bracket, and the fulcrum is provided on the motor bracket. The fulcrum of the lever can be more firmly fixed by arranging the motor bracket, and the motor can be arranged on the lever, so that the space utilization efficiency is further improved.

Preferably, a motor is arranged on the motor bracket, and an output shaft of the motor is used as the one end of the lever to be connected with the brush head. The power structure for triggering the Hall sensor is simplified by taking the motor output shaft as a part of the lever, the stability of torque transmission from the brush head to the lever is improved, and the occupation of space is reduced.

Preferably, one end of the motor bracket, which is close to the spring, is provided with a plate, and the magnet is fixedly arranged on the plate. The magnet is accommodated through the structure of arranging the independent plate, so that the interference of other parts to the magnet triggering Hall sensor can be reduced, and the identification accuracy is improved.

Preferably, the spring is a solenoid spring, one end of the solenoid spring is fixedly arranged with the lever, and the other end of the solenoid spring is fixedly arranged with the brush handle. By the lateral arrangement of the solenoid spring, the occupation of space can be reduced and stable spring force output can be maintained.

Preferably, one end of the motor support, which is close to the spring, is further provided with a first column body, and the spring is sleeved on the first column body. The setting through the cylinder makes the spring have stable elasticity output, can provide stable dynamics and detect.

Preferably, the lever further comprises a second mount, the motor support supporting the motor at an end of the motor remote from the brush head, the second mount supporting the motor at an end of the motor proximate to the brush head. The motor is supported at both ends of the motor, so that the influence of the vibration of the motor on the lever can be reduced, and the motor is stably fixed in the brush handle.

Preferably, the hall switch is connected with the control circuit, and when the signal output by the hall switch is greater than a preset threshold value, the control circuit controls the brush head of the toothbrush to reduce the vibration frequency. The circuit controls the tooth brushing force to guide the user to clean the teeth in a proper tooth brushing mode, so that the use experience of the user is improved.

Preferably, the electric toothbrush further comprises a metal bracket, the metal bracket is formed in a sheet shape, one end of the metal bracket is fixedly connected with the second motor bracket, and the other end of the metal bracket is fixedly arranged opposite to the toothbrush handle. Strengthened through metal support first motor support and second motor support between be connected to can reduce the influence of motor vibration to the brush holder, improve the experience that the user brushed teeth when improving detection stability.

Through the scheme, the fulcrum setting of lever is at the middle part of lever, lever both ends like this the activity space of needs is comparatively balanced, has avoided the brush head too not hard up, has also avoided hall switch to be difficult to trigger to improve the reasonable availability factor in space, strengthened the impression of brushing teeth.

Drawings

In order to more clearly illustrate the embodiments of the present specification 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 described in the embodiments of the present specification, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic view showing an internal structure of a power toothbrush of the present invention;

FIG. 2 is an exploded plan view of a powered toothbrush of the present invention;

fig. 3 is a schematic outline view of an electric toothbrush of the present invention.

Reference numerals:

1. a brush head; 101. brushing; 102. a first fixing member; 2. a brush handle; 201. a second fixing member; 202. a third fixing member; 211. a first protrusion; 212. a second protrusion; 3. switching a key; 4. adjusting a rotating speed key; 5. a Hall switch; 6. a circuit board; 7. a waterproof end cap; 8. a waterproof rubber ring; 9. a motor; 901. a motor output shaft; 902. a motor bracket; 911. a first clip groove; 912. a second collar groove; 913. a third clamp groove; 921. A first column; 922. a plate; 923. a second cylinder; 10. a metal bracket; 11. a solenoid spring; 12. a magnet; 13. an inner support; 1301. a first clamp; 1302. a second clamp; 14. a battery.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the term "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, which may be a mechanical connection, an electrical connection, which may be a direct connection, or an indirect connection via an intermediate medium. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "top," "bottom," "above … …," "below," and "on … …" as used throughout the description are relative positions with respect to components of the device, such as the relative positions of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, regardless of their orientation in space.

For the purpose of facilitating understanding of the embodiments of the present application, the following description will be made in terms of specific embodiments with reference to the accompanying drawings, which are not intended to limit the embodiments of the present application.

Example 1

One embodiment of the present invention, as shown in fig. 1-3, discloses an electric toothbrush, comprising a brush head 1 and a brush handle 2, wherein the brush head 1 is a main cleaning part, the brush handle 2 is a hand holding part of a user, and the brush head 1 is connected with the brush handle 2.

The brush head 1 is provided with bristles 101 at one end thereof for contacting teeth to complete a cleaning operation. The brush handle 2 is internally provided with a containing space which can contain other components of the electric toothbrush. The brush head 1 is connected with the brush handle 2, exemplarily, the two can be connected through a thread mode, and a waterproof rubber ring 8 is arranged between the two, the waterproof rubber ring 8 is sleeved outside the motor output shaft 901 through a connecting portion, the connecting portion comprises a second fixing member 201 and a third fixing member 202, and the waterproof rubber ring 8 is in interference fit with the motor output shaft 901. Further, waterproof rubber ring 8 is the silica gel material, has good leakproofness, can prevent effectively that liquid from getting into inside the toothbrush from the junction of brush head 1 and brush holder 2, for the inside damp-proofing suitable environment of dry that provides of toothbrush, extension inside spare part life-span.

The first fixing part 102 is arranged in the brush head 1, an accommodating space capable of accommodating the first fixing part 102 is arranged at one end, away from the bristles, of the brush head 1, and the first fixing part 102 is arranged in the accommodating space. The first fixing member 102 is a lining fixing frame inside the brush head 1 and is connected with the motor output shaft 901, and three fastening grooves, namely a first fastening groove 911, a second fastening groove 912 and a third fastening groove 913, are formed in the motor output shaft 901. Is connected with the first fixing member 102 through the first locking groove 911. The first fixing member 102 has a structure corresponding to the first locking groove 911.

The end of the handle 2 remote from the head 1 is connected to a waterproof end cap 7. illustratively, the handle 2 and the waterproof end cap 7 may be connected by a threaded connection. The waterproof end cover 7 is used for preventing liquid from entering from the bottom end of the brush holder 2 to corrode internal components of the brush holder 2, so that damage to the electric toothbrush is caused. Still be equipped with two holes on 2 lateral walls of brush holder, the cross sectional shape in hole is determined by the shape of key switch 3 and speed regulation button 4, the hole can make key switch 3 and speed regulation button 4 pass, and the user of being convenient for carries out the operation that electric toothbrush opened, closed and adjust the toothbrush rotational speed. The inner space of the brush handle 2 comprises a driving part.

Electric toothbrush still includes the drive division, the drive division sets up in 2 inside accommodation spaces of brush holder, specifically, is being close to in the accommodation space of the one end of brush head 1 includes: a motor 9 and a motor output shaft 901, wherein the motor 9 is provided with the motor output shaft 901. The motor 9 integrated with the motor output shaft 901 is fixed to the motor holder 902.

The motor output shaft 901 is arranged at the center of the containing space, is arranged along the extending direction of the brush holder 2, extends out of the brush holder 2 from one end close to the brush head 1, and the part of the motor output shaft 901 extending out of the outside is connected with the first fixing piece 102 inside the brush head 1 and is embedded into the bottom space of the brush head 1, so that sealing and water proofing are realized.

The motor output shaft 901 and the brush handle 2 are not fixedly connected, and the motor output shaft 901 and the brush handle 2 are flexibly connected and have a sealing waterproof function through a waterproof rubber ring 8. The outer lining of the waterproof rubber ring 8 is extruded to the inner wall of the brush holder 2 by the first fixing piece 102 to realize the sealing of the inner cavity of the brush holder 2.

The motor 9 can provide force along the axial direction and output the force to the motor output shaft 901, one end of the motor output shaft 901 close to the brush head 1 is designed into the shape of an eccentric shaft, so that rotary oscillation is generated, and the brush head 1 is driven to reciprocate in the horizontal direction, so that the effect of cleaning teeth by the electric toothbrush is achieved. The eccentric shaft has a uniform central axis with the motor output shaft 901.

The electric toothbrush further comprises a second fixing piece 201, a third fixing piece 202 and a motor bracket 902, wherein the second fixing piece 201, the third fixing piece 202 and the motor bracket 902 are all fixed in the accommodating space inside the brush handle 2. The second fixing member 201 and the third fixing member 202 act to fix the motor output shaft 901. The third fixing member 202 has two protrusions for limiting and fixing, which are a first protrusion 211 and a second protrusion 212, respectively, the first protrusion 211 is located at the upper end of the third fixing member 202 near the end of the handle 2, and the second protrusion 212 is located at the lower end of the third fixing member 202. At positions on the motor output shaft 901 corresponding to the first projection 211 and the second projection 212, there are a second catch groove 912 and a third catch groove 913, respectively. The first protrusion 211 is matched with the second fastening groove 912, and the second protrusion 212 is matched with the third fastening groove 913, so that the assembly and positioning of the motor output shaft 902 are completed.

The motor bracket 902 is sleeved outside the motor 9, and the bottom of the motor bracket 902 at the end far away from the motor is provided with a first cylinder 921, preferably, the cylinder is a cylinder. The first cylinder 921 coincides with the central axis of the motor mount 902 and has a cross-sectional area smaller than the cross-sectional area of the motor mount 902. A solenoid spring 11 is fixedly sleeved on the first cylinder 921, and the other end of the solenoid spring 11 is fixedly connected with the inner support 13. The solenoid spring 11 can effectively buffer the vibration generated when the motor 9 works, thereby reducing the vibration of the hand when the brush handle 2 is held in use and reducing the noise.

At a distance from the first cylinder 921 a plate 922 is provided, said plate 922, first cylinder 921 and motor support 902 being integrated, and the distance between the plate 922 and the first cylinder 921 just being able to pass and fix the solenoid spring 11. The length of the plate 922 is smaller than that of the first cylinder 921, a groove is formed in the plate 922, a magnet 12 is placed in the groove, the magnet 12 is matched with the groove in size, and the magnet 12 is tangent to the groove.

Further, be equipped with second cylinder 923 on the lateral wall of motor support 902, the cross-section of second cylinder 923 is circular, is convenient for drive motor support 902 and rotates. The second post 923 is mechanically attached to the inner wall of the handle 2, illustratively in a nested arrangement.

It should be noted that as long as can realize that second cylinder 923 brush holder 2 inner wall rotates to be connected all can, this embodiment's still another optional mode, the part that second cylinder and 2 inner wall of brush holder are connected is the screw thread form.

During brushing, the user applies pressure to the teeth, so that the brush head 1 is subjected to the reaction force of the teeth and tends to displace in the direction opposite to the teeth. The motor output shaft 901, the motor 9, the motor bracket 902 and the second cylinder 923 form a lever structure, and the second cylinder 923 is a fulcrum. The second cylinder 923 is used as a boundary, the part of the lever structure close to the brush head 1 is used as the upper part of the lever structure, and the part far away from the brush head 1 is used as the lower part of the lever structure. When the toothbrush head 1 moves away from the teeth after receiving the reaction force of the teeth, the first fixing member 102 is arranged inside the toothbrush head 1, and the first fixing member 102 is connected with the motor output shaft 901. Therefore, when the brush head 1 moves towards the direction far away from the teeth, the part of the lever structure close to the brush head 1 can be driven to incline towards the direction far away from the teeth, and meanwhile, the lower part of the lever structure is inclined in the opposite direction to the upper part of the lever structure. Different tilt angles will produce different vibration effects.

The electric toothbrush also comprises a Hall switch 5 and a circuit board 6, wherein the Hall switch 5 and the circuit board 6 are both arranged on the inner wall of the shell of the brush holder 2, and the Hall switch 5 is opposite to the center of the magnet 12. The arrangement mode can simplify circuit wiring and optimize wire arrangement, thereby saving space.

During brushing, the user applies pressure to the teeth and the brush head 1 is subjected to a reaction force applied to the brush head 1 by the teeth. The upper part of the lever structure is pressed to move in the direction away from the teeth, and the other end of the lever structure moves in the direction opposite to the pressed end. The lower part of the lever structure moves close to the hall switch 5, and the magnet 12 on the plate 922 is close to the hall switch 5, so that different vibration effects are generated through the change of the distance between the two.

After the distance between the two reaches a certain value, further, when the magnetic induction intensity provided by the magnet 12 of the hall switch 5 reaches a certain value, the trigger inside the hall switch 5 is turned over, so that the output level state is turned over, the hall switch 5 is turned on, the rotating speed of the motor 9 is reduced, and the vibration is weakened or stopped.

The electric toothbrush also comprises an inner bracket 13, and the inner bracket 13 is arranged at one end of the containing space in the brush handle 2 close to the waterproof end cover 7. The inner support 13 is connected to a battery 14. The battery 14 may be connected to the inner housing 13 in many ways, as long as the battery 14 is fixed to the inner housing 13, and the battery 14 is connected to the inner housing 13 by the first and second clips 1301 and 1302 on the inner housing 13. The battery 14 is prevented from falling off during the vibration of the motor 9.

The electric toothbrush further comprises a metal bracket 10, wherein one end of the metal bracket 10 is fixedly connected with the second fixing part 201, and the other end of the metal bracket 10 is fixedly connected with the inner bracket 13. The metal bracket 10 can play a role of connecting support, and can buffer the vibration of the motor 9 during operation and reduce noise.

Example 2

In one embodiment of the present invention, an electric toothbrush is disclosed.

The electric toothbrush is started by pressing the switch button 3 for a long time, after the electric toothbrush is started, the battery 14 provides required voltage for the circuit board 6, the circuit board 6 obtaining electric energy drives the motor 9 to start to act, and certain frequency and amplitude are transmitted to the brush head 1 for tooth cleaning. The vibration of the motor 9 generates a sense of vibration, and the sense of vibration generated when the motor 9 is operated is buffered by the metal bracket 10 and the solenoid spring 11, while reducing noise. When a user holds the brush handle 2 to stretch the brush head 1 into the oral cavity to be in contact with teeth and pressurize the teeth, the metal bracket 10 and the solenoid spring 11 are deformed, the phenomenon that the inclination angle of the lever structure is too large, the electric toothbrush is too sensitive is avoided, and the use comfort is reduced. The lever structure drives the plate 922 and the embedded magnet 12 to approach the hall switch 5, the hall element 5 can convert the magnetic input signal into an electric signal in practical application, and the sensitivity of the hall effect is in direct proportion to the magnetic induction intensity of the applied magnetic field. When the distance between the magnet 12 and the hall switch 5 changes and the distance between the magnet 12 and the hall switch 5 reaches a certain value, that is, when the magnetic induction intensity provided by the magnet 12 on the hall switch 5 reaches a certain degree, the trigger inside the hall switch 5 is turned over, so that the output level state is turned over, the hall switch 5 is turned on, the rotating speed of the motor 9 is reduced, and the vibration is weakened or stopped. That is, when the pressure applied to the teeth by the user is too large, the force of the electric toothbrush to the teeth is reduced by the influence of the magnetic field 12 to the hall switch 5, and the damage to the teeth and the gums caused by the excessive force of the user is prevented. When the user reduces the pressure applied to the teeth, the metal bracket 10 and the solenoid spring 11 are reset, the magnet 12 is driven to return to the original position, the Hall switch 5 is closed, and the motor 9 recovers to the original rotating speed.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are described in further detail, it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present application should be included in the scope of the present application.

Claims (10)

1. An electric toothbrush, comprising:

a brush head;

the brush handle is internally provided with a cavity, and a Hall switch is arranged in the cavity;

a lever partially located inside the cavity of the handle, the lever including a fulcrum, the fulcrum being rotatably disposed in the cavity; one end of the lever positioned on one side of the fulcrum extends out of the chamber and is connected with the brush head; and a magnet is arranged at the other end of the lever positioned at the other side of the fulcrum, and the magnet is opposite to the Hall switch.

2. The electric toothbrush of claim 1, wherein the end of the lever at which the magnet is disposed is further provided with a spring that applies a force to the lever to push the magnet away from the hall switch when the brush head is forced to press the magnet toward the hall switch.

3. The electric toothbrush of claim 2, wherein the lever includes a motor mount, the fulcrum being disposed on the motor mount.

4. The electric toothbrush according to claim 3, wherein a motor is provided on the motor holder, and an output shaft of the motor is connected to the brush head as the one end of the lever.

5. The electric toothbrush of claim 3, wherein the motor mount has a plate disposed on an end thereof adjacent to the spring, the plate having a magnet disposed thereon.

6. The powered toothbrush as defined in claim 5, wherein the spring is a solenoid spring having one end fixedly disposed with the lever and the other end fixedly disposed with the handle.

7. The electric toothbrush according to claim 6, wherein a first post is further disposed at an end of the motor bracket adjacent to the spring, and the spring is sleeved on the first post.

8. The electric toothbrush of claim 3, wherein the lever further includes a second mount, the motor support supporting the motor at an end of the motor distal from the brushhead, the second mount supporting the motor at an end of the motor proximal to the brushhead.

9. The electric toothbrush of claim 1, wherein the hall switch is connected to the control circuit, and the control circuit controls the brushhead of the toothbrush to reduce the vibration frequency when the signal output by the hall switch is greater than a predetermined threshold.

10. The electric toothbrush of claim 8, further comprising a metal bracket formed in a thin plate shape, wherein one end of the metal bracket is fixedly connected to the second fixing member, and the other end of the metal bracket is fixedly disposed opposite to the handle.

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