CN114869527A - Electric toothbrush and tooth brushing method - Google Patents
Electric toothbrush and tooth brushing method Download PDFInfo
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- CN114869527A CN114869527A CN202210609154.5A CN202210609154A CN114869527A CN 114869527 A CN114869527 A CN 114869527A CN 202210609154 A CN202210609154 A CN 202210609154A CN 114869527 A CN114869527 A CN 114869527A
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- motor
- electric toothbrush
- force
- resistor
- controller
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/221—Control arrangements therefor
Abstract
The disclosure belongs to the field of electric toothbrushes, and particularly relates to an electric toothbrush and a tooth brushing method. The electric toothbrush includes: a carrier extending in a first direction and having an elastic deformation in a second direction intersecting the first direction when the carrier carries a force in the second direction; a resistor disposed on the carrier; the resistor comprises a conductor or semiconductor element which is elastically deformed together with the bearing member, thereby generating a resistance change based on a resistance strain effect; a control circuit coupled to the resistor, the control circuit detecting the resistance signal and evaluating a magnitude of the force in the second direction based on the resistance signal. The tooth brushing method is the tooth brushing method of the electric toothbrush. So as to control the corresponding vibration of the motor by acquiring the pressure applied on the teeth.
Description
Technical Field
The disclosure belongs to the field of electric toothbrushes, and particularly relates to an electric toothbrush and a tooth brushing method.
Background
During brushing with a power toothbrush, it is often desirable to increase the force of the brush head vibration by increasing the force applied to the teeth, and in fact doing so is counterproductive. When the pressure of the brush head on the teeth is larger, the resistance generated on the brush head is larger, so that the effective swing amplitude of the brush head is reduced, and the effect of cleaning the teeth is not achieved.
Disclosure of Invention
The present disclosure has been made in view of the above-mentioned needs of the prior art, and it is an object of the present disclosure to provide a power toothbrush and a method of brushing teeth to control the corresponding vibration of a motor by obtaining pressure applied to teeth.
In order to solve the above problem, the technical solution provided by the present disclosure includes:
there is provided an electric toothbrush comprising: a carrier extending in a first direction and having an elastic deformation in a second direction intersecting the first direction when the carrier carries a force in the second direction; a resistor disposed on the carrier; the resistor comprises a conductor or semiconductor element which is elastically deformed together with the bearing member, thereby generating a resistance change based on a resistance strain effect; a control circuit coupled to the resistor, the control circuit detecting the resistance signal and evaluating a magnitude of the force in the second direction based on the resistance signal.
The electric toothbrush is characterized in that a resistor is arranged on the bearing piece capable of generating elastic deformation, when the bearing piece is subjected to the action of force along the second direction and generates elastic deformation along the second direction, namely when a user brushes teeth by using the electric toothbrush, the resistance of the resistor is correspondingly changed along with the deformation of the bearing piece, so that the magnitude of the force along the second direction is evaluated according to the resistance signal, and the controller outputs a corresponding control instruction after receiving the changed resistance signal.
Preferably, a first end of the bearing part is connected with the motor, and a second end of the bearing part is connected with the brush head; the force in the second direction comprises a force or component of a force applied to the brushhead during brushing.
The motor is connected to the carrier, and the brush head is passed through with the vibration that the motor produced through this kind of setting the carrier transmits for the brush head to realize the clean tooth of brush head vibration, in addition, when the brush head received the power along the second direction, the carrier with sensitive receipt and along with the brush head deformation, the resistor of setting on the carrier is with can changing self resistance value according to the deformation degree in real time, thereby judge the size of the power of the second direction that receives according to the size that self resistance changes.
Preferably, the control circuit includes: the acquisition module is electrically connected with the resistor and receives a resistance signal from the resistor; the controller is electrically connected with the acquisition module and sends a control instruction according to the resistance signal; and the motor is electrically connected with the controller and operates according to a control instruction sent by the controller.
Because the resistance change of the resistor caused by the micro-deformation of the bearing part is very small and cannot be identified by a common controller, the acquisition module is arranged between the resistor and the controller and can sensitively acquire the small change of the resistance value of the resistor, so that the electric toothbrush can realize the quick response of the vibration strength.
Preferably, the control circuit further comprises a voltage regulator; the voltage regulator is electrically connected with the controller and used for regulating output voltage based on a control instruction of the controller; the motor is connected with the voltage regulator and outputs power based on the output voltage of the voltage regulator.
Through the mode, the output power of the motor can be adjusted under the condition that the driving signal of the controller is not changed.
Preferably, the sending of the control command by the controller according to the resistance signal includes: collecting a plurality of data in the resistance signal within preset time, and taking average parameters of the data; and sending out a control instruction according to the average parameter.
Through the above setting, the interference of unnecessary force change to the tooth brushing state can be reduced, and the response generated by the mistaken touch of the user can be effectively weakened or even avoided.
Preferably, the bearing part comprises a motor shaft, and a first end of the bearing part is fixedly arranged; the bearing piece receives the force in the second direction near the second end position to generate elastic deformation; the resistor is disposed adjacent the second end.
The first end of the bearing part is fixed on the motor, and the bearing part has a certain length so that when the second end position is affected by force, the bearing part can deform as much as possible, and the resistance change of the resistor is increased so as to represent the force applied to the second end more sensitively and accurately.
Preferably, the bearing part comprises a bearing surface, the resistor is arranged on the bearing surface in a fitting manner, the bearing surface is substantially a plane, and the thickness of the area where the bearing surface is located is lower than that of the area around the bearing surface; the extension direction of the bearing surface is basically vertical to the second direction.
The bearing surface is arranged in a mode of being basically vertical to the second direction, so that the bearing surface can generate larger deformation along the second direction when being subjected to force in the second direction, and further a resistor arranged on the bearing surface has larger resistance change; the thickness of the position of the bearing surface is smaller than the thickness of the periphery of the bearing surface so as to generate obvious curvature change when an external force along a second direction is applied; in addition, will the resistor laminating setting in can be more sensitive receipt elastic deformation on the bearing surface, when the bearing surface takes place the deformation of camber along with the carrier, can the corresponding response of production of nearly simultaneous.
Preferably, the carrier further comprises a thinned portion, and the thinned portion is thinned by a part with a relatively smaller size in the second direction than the surrounding part; the thinned portion is disposed on the bearing surface and/or on an area covered by the bearing surface.
The degree of curvature change of the first area when the bearing piece is subjected to an external force along the second direction is increased by arranging the thinning part on the bearing piece, so that the resistance of the resistor can sensitively follow the deformation change of the bearing piece.
Preferably, the bearing surface and the brushing surface of the brush head are positioned on the same side of the bearing part; the thinned portion and the bearing surface are located on the same side of the bearing member.
The resistor arranged on the plane can generate relatively large curvature change along with the plane so as to more sensitively detect the deformation caused by stress, and meanwhile, the error can be reduced.
Preferably, the controller detects the force received by the brush head along the second direction and controls the motor to vibrate; the magnitude of the force in the second direction is positively correlated with the vibration strength of the motor within a set range.
The controller receives the signal from the brush head, and according to the stress signal control of brush head the running state of motor, work as the brush head is the bigger in deformation under the condition of atress, power or rotational speed when the motor moves are the bigger, and above-mentioned change is gone on in the settlement scope, the settlement scope can prevent effectively that motor vibration dynamics from lasting the increase when it surpasss certain degree, can produce certain damage to tooth and gum.
The vibration force comprises motor power and motor rotating speed; the controller changes one or more of the duty ratio of a motor driving signal, the power supply voltage of the motor and the driving frequency of the motor through a control instruction to change the vibration strength.
The controller changes the vibration strength of the motor through the control command by changing one or more of the duty ratio of the motor driving signal, the power supply voltage of the motor and the driving frequency of the motor.
Compared with the prior art, the vibration control device has the advantages that the corresponding vibration of the motor is controlled by acquiring the pressure applied to the teeth; the bearing piece extends along a first direction, two ends of the bearing piece are respectively connected with the brush head and the motor so as to transmit the vibration of the motor to the brush head to provide the power for brushing teeth, in addition, when the end, connected with the brush head, of the bearing piece is pressed along a second direction, the bearing piece deforms and drives the resistor arranged on the bearing piece, and the resistor deforms along with the bearing piece, so that the external force applied to the brush head can be represented; the resistor is connected with the controller to transmit a resistance signal to the controller, and the controller judges the stress of the bearing piece corresponding to the resistance signal so as to control the vibration strength of the motor; bearing carrier is last to be provided with loading end and attenuate part to enlarge deformation, so set up can have effective and rapid make with brush corresponding of head atress, brush head atress is big more promptly, and motor vibration dynamics is big more, in order to make things convenient for the user to use, improve user's use and experience.
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 partial block diagram view of an electric toothbrush provided by the present disclosure;
FIG. 2 is a partial block diagram view of another angled electric toothbrush provided by the present disclosure;
fig. 3 is a side view block diagram of a carrier provided by the present disclosure;
FIG. 4 is a partial block diagram view of yet another electric toothbrush provided by the present disclosure;
FIG. 5 is a partial block diagram view of yet another angle electric toothbrush provided by the present disclosure;
fig. 6 is a block diagram of the electrical connections of the electric toothbrush provided by the present disclosure.
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 disclosure, 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 meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.
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
This embodiment provides a powered toothbrush as shown with reference to fig. 1-6.
The electric toothbrush comprises a brush head, a brush handle, a bearing part 1 and a motor 4.
The toothbrush head extends along a first direction and comprises a first shell and bristles, wherein a first cavity is arranged in the first shell and used for accommodating the bearing part 1 connected with the toothbrush handle. One end of the first housing is provided with a first opening which connects the first chamber with the external environment, so that the carrier 1 is passed through the first opening and at least partially arranged in the first chamber. And the outer part of the other end of the first shell is provided with bristles for cleaning teeth.
A handle extending in a first direction and including a second housing. And a second cavity is arranged in the second shell and used for containing electronic components for controlling and driving the electric toothbrush to operate. And one end of the second shell is provided with a second opening, and the second opening is used for communicating the second chamber with the external environment. One end of the bearing piece 1 penetrates through the first opening to be connected with the brush head, and the other end of the bearing piece 1 penetrates through the second opening to be connected with the brush handle. The head and handle are combined together in the manner described above to form a unitary body.
And a carrier 1 extending in the first direction and having elasticity. The carrier 1 comprises a first end 5 and a second end 6, the first end 5 being connected to the handle and the second end 6 being connected to the head. In the process of brushing teeth, the brush head will receive the force of the second direction intersecting with the first direction, a certain included angle is formed between the brush head and the brush handle, and because the bearing piece 1 has elasticity, when the brush head deflects to the direction far away from the original position along the direction of the external force under the action of the external force, the bearing piece 1 will deflect along the direction basically the same as the direction of the deflection of the brush head, and further, the second end 6 generates the deformation along the second direction. The force in the second direction includes a force or a component of a force applied to the toothbrush head during brushing teeth, the force in the second direction received by the electric toothbrush is an effective force during brushing teeth, and the forces in other directions have less influence on the brushing teeth using the electric toothbrush.
Further, a motor 4 is arranged in the second chamber, a bearing member 1 is arranged on the motor 4, the first end 5 of the bearing member 1 is fixed on the motor 4, and the bearing member 1 has a certain length and is inserted into the first chamber and the second chamber so as to generate deformation as large as possible when the position of the second end 6 is acted by force. Still further, the second end 6 is subjected to a force in a second direction near the position thereof, so that the second end 6 is deflected in the second direction to be elastically deformed.
The electric toothbrush further comprises a resistor comprising a conductive or semi-conductive element, the resistor having the property that its own resistance changes when it is deformed. Illustratively, the resistor comprises a resistance strain gauge made of constantan wire or nichrome wire with a phi of 0.02-0.05mm wound in a grid or etched in a grid with a very thin metal foil, sandwiched between two layers of insulating foil. The resistance strain gauge 7 may detect the amount of deformation, in particular the change in curvature of the carrier 1. When the resistance strain gauge 7 deforms, the length of the metal wire inside the resistance strain gauge is increased and the cross-sectional area of the metal wire is reduced due to the axial tension, and therefore the resistance is increased.
The resistor is arranged in a first area of the carrier 1 and is elastically deformed in a second direction when the carrier 1 is subjected to a force in the second direction, and the resistor is deformed together with the carrier 1 to cause a change in the resistance of the resistor. The carrier 1 comprises a motor shaft.
Further, the first region is disposed adjacent to the first end 5, the first end 5 is fixed on the motor 4, the second end 6 is a position on the carrying member 1 farthest from the first end 5, when the carrying member 1 is subjected to an external force along the second direction, the second end 6 can generate the largest displacement change, and accordingly, the largest curvature change will be generated in the first region. The arrangement is such that the resistor can more sensitively capture the bending condition of the bearing member 1, and further judge the magnitude of the external force borne by the bearing member 1.
Specifically, the bearing surface 2 is arranged in a first area of the bearing member 1, the bearing surface 2 is substantially a plane, the extending direction of the bearing surface 2 is substantially perpendicular to the second direction, and the resistor is attached to the bearing surface 2. The plane is lower and thinner relative to the area around the plane, so that the change of curvature is easier to generate, and the resistor can detect the stress situation more sensitively. Arranging the carrying surface 2 substantially perpendicular to said second direction enables a large variation of curvature in the second direction when subjected to a force in the second direction, resulting in a large variation of resistance of the resistors arranged on said carrying surface 2. In addition, will the resistor laminating sets up in order can be more sensitive receipt elastic deformation on the loading face 2, when loading face 2 carries out elastic deformation along with load-bearing member 1, can be the corresponding response of production almost simultaneously.
Compared with the structure that the Hall sensor is arranged on the bearing piece 1, and the magnet is arranged at the position corresponding to the Hall sensor in the second chamber, the micro deformation change can be received in real time, and the obtained interference is less. The Hall sensor generates a certain response through the change of the distance, and then deduces the stress magnitude. The vibration along the first direction generated in the working process of the motor 4 can drive the bearing sheet to generate small-amplitude vibration along the first direction, the Hall sensor obtains data generated by the change of a magnetic field, and the distance between the Hall sensor and the magnet is continuously changed along with the small-amplitude vibration of the motor 4 in the process of the Hall sensor, so that the change of the collected magnetic field information is caused, and an interference item exists in the data obtained by the Hall sensor. In addition, the use of hall sensors and magnets to detect the amount of deformation also places certain requirements on the positioning of the two. The resistor 7 evaluates the magnitude of the applied force by detecting the curvature of the region. When the resistor 7 is used for representing the deformation degree, the vibration direction of the motor 4 is basically vertical to the deformation direction influencing the resistance value of the resistor 7, namely, the vibration of the motor 4 does not influence the resistor 7, the resistor 7 only needs to be attached to the bearing surface 2, and the assembly requirement is low.
Further, in order to amplify the curvature variation in the first region, a thinned portion 3 is provided in a region of the carrier 1 covered by the first region, the direction of depression of the thinned portion 3 extending in the second direction and/or a direction opposite to the second direction. By providing a thinned portion 3 in the thinned region where the resistor is provided to reduce the thickness of the carrier 1 again here, thereby producing a more pronounced change in curvature under the influence of an external force, the resistor provided in the first region is moved therewith to increase the amount of deformation of the resistor, causing a change in resistance. Further, the directions of the recess of the thinned portion 3 include recess in the second direction, recess in the opposite direction to the second direction and recess around the carrier 1. In the above-mentioned recess direction, when the recess direction of the thinned portion 3 is recessed along the second direction, the resistor and the thinned portion 3 are located on the same side of the carrier 1, and the bottom surface of the resistor is arranged to close the top surface of the thinned portion 3; when the recess direction of the thinned portion 3 is a direction recessed in the opposite direction of the second direction, the thinned portion 3 is provided on the other side of the region where the resistor is located. Compared with the above, when the resistor and the thinned part 3 are located on the same side of the bearing part 1, the change of curvature caused by the external force along the second direction is larger, so that the resistor can be more sensitively subjected to stress. When the sunken direction of attenuate portion 3 is sunken along the direction of second direction and the opposite direction of second direction to and support 1 week around holding, can produce and set up the change of curvature that attenuate portion 3 is bigger than the unilateral, but the thickness undersize of holding 1 under the too big circumstances of atress, the easy rupture reduces electric toothbrush's life.
Further, with reference to fig. 4, the plane and the brushing surface of the head are located on the same side of the carrier 1. When the face of brushing teeth of brush head receives the power along the second direction, hold carrier 1 and produce deformation, compare in hold carrier 1 and deviate from one side of the face of brushing teeth, refer to fig. 2, hold carrier 1 in the deformation volume that face of brushing teeth homonymy produced is bigger, when the plane setting with the face of brushing teeth is located hold carrier 1 with one side, the resistor that sets up on the plane is followed the plane produces deformation that deformation volume that relatively great deformation volume arouses in order to can be more sensitive detection atress, can also reduce the error simultaneously.
Since the greater the force applied by the user to the teeth during brushing hinders the vibration of the motor 4 and does not achieve the effect of cleaning the teeth, a controller is introduced to determine the applied pressure based on the amount of deformation indicative of the magnitude of the applied pressure and to control the motor 4 by the controller to increase the amplitude of the vibration of the motor 4 as the user increases the applied pressure.
The control circuit of the electric toothbrush is connected to the resistor to detect and process the resistance signal and to evaluate the magnitude of the force in the second direction based on the resistance signal. The control circuit comprises an acquisition module and a controller, wherein the acquisition module is electrically connected with the resistor and receives a resistance signal from the resistor; the controller is electrically connected with the acquisition module, the controller sends out a control instruction according to the resistance signal, the control circuit is electrically connected with the motor 4, and the motor 4 operates according to the control instruction sent out by the controller. The controller sends out a control instruction according to the resistance signal, and the control instruction comprises the following steps: collecting a plurality of data in the resistance signal within preset time, and taking average parameters of the data; and sending out a control instruction according to the average parameter. Because the resistance change of the resistor caused by the micro-deformation of the bearing part 1 is very small and cannot be identified by a common controller, a collection module is arranged between the resistor and the controller and can sensitively collect the small change of the resistance value of the resistor, so that the electric toothbrush can realize the quick response of the vibration strength.
Furthermore, the resistor is a resistance strain gauge, the resistance strain gauge deforms under the action of force from the second direction and causes a resistance value to change, and the acquisition module acquires an analog signal from the resistance strain gauge and used for representing resistance change, converts the analog signal into a digital signal and transmits the digital signal to the controller. The controller receives the digital signal, calculates the real-time frequency of the digital signal, obtains the tooth brushing surface pressure condition, generates a control signal and sends a control instruction. The pressure condition comprises a pressure value along the second direction received by the tooth brushing surface, and the pressure value is matched with a control instruction corresponding to the pressure value and sent to the actuator. For example, when the controller obtains a plurality of pressure values within a predetermined application, an average value of the plurality of pressure values needs to be obtained, and a control command is sent to the actuator according to the average value. So set up in order to can make the more acute receipt user's of electric toothbrush applied force and respond in real time according to the atress, can also effectively weaken even avoid the response that produces because the mistake touches simultaneously.
By the above manner, the working state of the motor 4 can be adjusted according to the force applied to the brush head, and within a certain range, the larger the force received by the brush head along the second direction is, the stronger the corresponding vibration of the motor 4 is, and the adjusting method includes but is not limited to: changing the power of the motor 4, increasing or decreasing the duty ratio of a driving signal output by the controller under the condition that the power supply voltage of the motor 4 is not changed, and further adjusting the power of the motor 4; the working frequency, namely the rotating speed, of the motor 4 is changed, and the working frequency or the rotating speed of the motor 4 is adjusted by changing the frequency of the driving signal output by the controller; and simultaneously vary the power and operating frequency of the motor 4. The arrangement is such that in use, the greater the force applied to the teeth by the user through the electric toothbrush, the more intense the vibration of the electric toothbrush to provide greater power to brush the teeth.
Illustratively, the working state of the motor 4 is changed by adjusting the duty ratio of the driving signal of the motor 4, when the electric toothbrush is started without being subjected to a force along the second direction, the force along the second direction, which is applied to the toothbrush head and received by the controller, is 0 gram force, and the duty ratio of the driving signal of the motor 4 is 20 percent; a user pushes the brush head of the electric toothbrush against teeth to brush teeth, the force in the second direction received by the brush head obtained by the controller is changed into 100 grams of force, and the duty ratio of the driving signal of the motor 4 is increased to 50 percent; when the user uses larger force to abut against the teeth, the controller detects that the force along the second direction is changed from 100 gram force to 200 gram force, and the duty ratio of the driving signal of the motor 4 is increased to 80 percent; when the user reduces the force with which the electric toothbrush is pressed against the teeth, the controller detects that the force in the second direction is reduced to 150 g-force, and the duty ratio of the driving signal of the motor 4 is then reduced to 65%. In addition, the electric toothbrush can be further configured to enable the vibration amplitude of the motor 4 to be reduced to a preset value and give a prompt sound to remind a user that the teeth and/or the gum are damaged when the controller detects that the force applied to the toothbrush head in the second direction exceeds a set maximum value, and the electric toothbrush continues to work until the brushing force is reduced to be within the set maximum value; similarly, when the controller detects that the force applied to the brushhead in the second direction is less than the set minimum, it is assumed that the teeth are no longer in contact with the brushhead, i.e., the user stops brushing, at which time the motor 4 drive signal is reduced to a minimum.
Still further, referring to fig. 3, the control circuit further includes a voltage regulator, the voltage regulator is respectively connected to the controller and the motor 4, a control command output by the controller first passes through the voltage regulator, the voltage regulator outputs a corresponding voltage according to the control command, and the voltage provides a supply voltage for the motor 4.
For the above situation, the power of the motor 4 may be changed to regulate the motor 4, and the supply voltage of the motor 4 may be increased or decreased without changing the driving signal, so as to correspondingly increase or decrease the power of the motor 4.
Example 2
This example provides a method of brushing teeth using the electric toothbrush of example 1.
When a user increases the force pressing against the teeth due to the desire to enhance the tooth brushing power of the electric toothbrush, the motor of the electric toothbrush increases the vibration intensity to enhance the tooth brushing power, thereby satisfying the user's needs; when the user weakens the force pressing against the teeth by intending to weaken the brushing power of the electric toothbrush, the motor of the electric toothbrush reduces the vibration intensity to weaken the brushing power.
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 (12)
1. An electric toothbrush, comprising:
a carrier extending in a first direction and having an elastic deformation in a second direction intersecting the first direction when the carrier carries a force in the second direction;
a resistor disposed on the carrier; the resistor comprises a conductor or semiconductor element which is elastically deformed together with the bearing member, thereby generating a resistance change based on a resistance strain effect;
a control circuit coupled to the resistor, the control circuit detecting the resistance signal and evaluating a magnitude of the force in the second direction based on the resistance signal.
2. The powered toothbrush as defined in claim 1, wherein the carrier has a first end connected to the motor and a second end connected to the brushhead;
the force in the second direction comprises a force or component of a force applied to the brushhead during brushing.
3. The electric toothbrush of claim 2,
the control circuit includes: the acquisition module is electrically connected with the resistor and receives a resistance signal from the resistor; the controller is electrically connected with the acquisition module and sends a control instruction according to the resistance signal;
and the motor is electrically connected with the controller and operates according to a control instruction sent by the controller.
4. The electric toothbrush of claim 2,
the control circuit further comprises a voltage regulator; the voltage regulator is electrically connected with the controller and used for regulating output voltage based on a control instruction of the controller;
the motor is connected with the voltage regulator and outputs power based on the output voltage of the voltage regulator.
5. The electric toothbrush of claim 1,
the controller sends out a control instruction according to the resistance signal, and the control instruction comprises the following steps:
collecting a plurality of data in the resistance signal within preset time, and taking average parameters of the data; and sending out a control instruction according to the average parameter.
6. The electric toothbrush of claim 1,
the bearing piece comprises a motor shaft, and a first end of the bearing piece is fixedly arranged; the bearing part receives the force in the second direction near the second end position to generate deformation; the resistor is disposed adjacent the first end.
7. The electric toothbrush of claim 6,
the bearing part comprises a bearing surface, the resistor is arranged on the bearing surface in a fitting mode, the bearing surface is basically a plane, and the thickness of the area where the bearing surface is located is lower than that of the area around the bearing surface;
the extension direction of the bearing surface is basically vertical to the second direction.
8. The electric toothbrush of claim 7,
the bearing piece further comprises a thinning part, and the thinning part is thinner than the part around the thinning part in the second direction;
the thinned portion is disposed on the bearing surface and/or on an area covered by the bearing surface.
9. The electric toothbrush of claim 8,
the bearing surface and the tooth brushing surface of the brush head are positioned on the same side of the bearing part;
the thinned portion and the bearing surface are located on the same side of the bearing member.
10. The electric toothbrush of claim 9,
the controller detects the force received by the brush head along the second direction and controls the motor to vibrate;
the magnitude of the force in the second direction is positively correlated with the vibration strength of the motor within a set range.
11. The electric toothbrush of claim 10,
the vibration force comprises motor power and motor rotating speed;
the controller changes one or more of the duty ratio of a motor driving signal, the power supply voltage of the motor and the driving frequency of the motor through a control instruction to change the vibration strength.
12. A method of brushing teeth, comprising:
brushing the teeth using an electric toothbrush according to any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210609154.5A CN114869527A (en) | 2022-05-31 | 2022-05-31 | Electric toothbrush and tooth brushing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210609154.5A CN114869527A (en) | 2022-05-31 | 2022-05-31 | Electric toothbrush and tooth brushing method |
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| CN114869527A true CN114869527A (en) | 2022-08-09 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208464302U (en) * | 2017-11-16 | 2019-02-05 | 袁江辉 | A kind of electric toothbrush |
| CN209677707U (en) * | 2018-12-24 | 2019-11-26 | 张泽旭 | A kind of intelligent toothbrush |
| CN211560467U (en) * | 2020-01-07 | 2020-09-25 | 深圳瑞湖科技有限公司 | Electric toothbrush for detecting pressure of brush head |
| CN213047424U (en) * | 2020-05-22 | 2021-04-27 | 深圳素士科技股份有限公司 | Electric tooth brush |
| CN112880541A (en) * | 2021-03-16 | 2021-06-01 | 广州星际悦动股份有限公司 | Motor shaft displacement detection device, motor control system and method and electric toothbrush |
| CN113100989A (en) * | 2021-04-16 | 2021-07-13 | 深圳瑞湖科技有限公司 | No-key electric toothbrush |
-
2022
- 2022-05-31 CN CN202210609154.5A patent/CN114869527A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208464302U (en) * | 2017-11-16 | 2019-02-05 | 袁江辉 | A kind of electric toothbrush |
| CN209677707U (en) * | 2018-12-24 | 2019-11-26 | 张泽旭 | A kind of intelligent toothbrush |
| CN211560467U (en) * | 2020-01-07 | 2020-09-25 | 深圳瑞湖科技有限公司 | Electric toothbrush for detecting pressure of brush head |
| CN213047424U (en) * | 2020-05-22 | 2021-04-27 | 深圳素士科技股份有限公司 | Electric tooth brush |
| CN112880541A (en) * | 2021-03-16 | 2021-06-01 | 广州星际悦动股份有限公司 | Motor shaft displacement detection device, motor control system and method and electric toothbrush |
| CN113100989A (en) * | 2021-04-16 | 2021-07-13 | 深圳瑞湖科技有限公司 | No-key electric toothbrush |
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