CN-224232116-U - Control circuit and electric toothbrush

CN224232116UCN 224232116 UCN224232116 UCN 224232116UCN-224232116-U

Abstract

The utility model provides a control circuit and an electric toothbrush, which are applied to the electric toothbrush, wherein the control circuit comprises a power supply circuit, a pressure sensing circuit, a motor driving circuit, a main control circuit and a pressure sensing lamp circuit. According to the utility model, the pressure applied during tooth brushing is monitored in real time by the pressure sensing circuit, and when the pressure exceeding the safety threshold is detected, the main control circuit triggers the motor to enter a preset overpressure mode on one hand, and triggers the pressure sensing lamp circuit to send out warning light effect on the other hand, and the process prompts a user to adjust the strength by tactile feedback and optical warning, so that gum damage and tooth hard tissue abrasion caused by excessive pressure are avoided. Meanwhile, the motor driving circuit is adopted to drive the motor to form sonic vibration, so that water flow and toothpaste foam form microjet and penetrate into blind areas which are difficult to cover by traditional vibration schemes such as tooth gaps, gingival sulcus and the like, the plaque clearance rate is improved, and the caries and periodontal disease risks are reduced.

Inventors

CHEN CHUGANG
LV ZHENHUA
LI DONGBAO
ZHENG CHUANZHOU

Assignees

瑞圣特科技(深圳)有限公司

Dates

Publication Date: 20260512
Application Date: 20250521

Claims (10)

1. A control circuit for an electric toothbrush, the electric toothbrush comprising a motor, a battery, the control circuit comprising: the power supply circuit is used for performing power supply processing on the battery power supply and outputting the battery power supply; The pressure sensing circuit is used for collecting pressure signals and converting the pressure signals into first electric signals to be output; The output end of the motor driving circuit is connected with the controlled end of the motor and is used for driving the motor to work so as to provide sound wave vibration; The main control circuit is connected with the output end of the pressure sensing circuit and the input end of the motor driving circuit and is used for receiving and outputting a corresponding first control signal to the motor driving circuit according to a first electric signal output by the pressure sensing circuit so as to control the motor to enter a preset overvoltage mode; The main control circuit is also used for outputting a corresponding first driving signal to the pressure induction lamp circuit according to the first electric signal so that the pressure induction lamp circuit responds to the first driving signal and works.
2. The control circuit of claim 1, the electric toothbrush further comprising a toothbrush head, wherein the pressure sensing circuit comprises: The pressure sensor switch is arranged in the toothbrush head, one end of the pressure sensor switch is connected with the pressure input end of the main control circuit, the other end of the pressure sensor switch is grounded, and the pressure sensor switch is used for detecting the pressure of the toothbrush head contacted with teeth and outputting a first electric signal to the main control circuit when the pressure sensor switch is triggered.
3. The control circuit of claim 1, further comprising: The power switch circuit is connected with the main control circuit and is used for outputting corresponding second electric signals to the main control circuit when operated by a user; The main control circuit is used for receiving and outputting a corresponding second control signal to the motor driving circuit according to a second electric signal of the power switch circuit so as to control the motor to enter a corresponding working mode.
4. A control circuit as claimed in claim 3, wherein the power switching circuit comprises: One end of the power button switch is connected with the switch input end of the main control circuit, and the other end of the power button switch is grounded; the power button switch is used for outputting a corresponding second electric signal to the main control circuit when operated by a user.
5. The control circuit of claim 3, further comprising: the indicating lamp circuit is connected with the main control circuit and used for displaying the working state of the electric toothbrush; The main control circuit is also used for receiving and outputting a corresponding second driving signal to the indicator light circuit according to the second electric signal of the power switch circuit, and controlling the indicator light circuit to work.
6. The control circuit of claim 5, wherein the operating mode of the motor comprises a multi-gear operating mode, the indicator light circuit comprises a plurality of LED lights, and each gear of the operating mode corresponds to one LED light of the indicator light circuit; The main control circuit is further used for outputting a corresponding second control signal to the motor driving circuit every time the second electric signal of the power switch circuit is received, so that the motor is controlled to enter a next working mode according to a preset sequence, and outputting a corresponding second driving signal to an LED lamp corresponding to the current working mode of the motor.
7. The control circuit of claim 1, wherein the power supply circuit comprises: the input end of the battery power supply circuit is connected with the battery; And the input end of the power management circuit is connected with the input end of the battery power supply circuit and is used for converting the battery power supply into a first voltage and outputting the first voltage.
8. The control circuit of claim 7, further comprising: The charging end is connected with the power supply circuit; And the input end of the overvoltage protection circuit is connected with the charging end, and the output end of the overvoltage protection circuit is connected with the power management circuit and is used for disconnecting the charging end from the power circuit when the charging voltage of the electric toothbrush is too high.
9. An electric toothbrush comprising a battery, a motor and a control circuit as claimed in any one of claims 1 to 8.
10. The electric toothbrush of claim 9, further comprising: the control circuit, the battery and the motor are arranged in the handle; the toothbrush head is detachably arranged at one end of the handle.

Description

Control circuit and electric toothbrush Technical Field The utility model relates to the technical field of oral cavity cleaning, in particular to a control circuit and an electric toothbrush. Background With the deep popularity of personal care electronics, power toothbrushes as oral care tools for high frequency use, their functional integration and optimization of user experience have become critical to product upgrades. At present, the traditional electric toothbrush lacks a pressure sensing structure, a user cannot intuitively sense the tooth brushing force, the user can easily exert excessive force when pressing by hand feeling, gum bleeding and retraction can be caused by long-term use, even enamel is worn, the soft principle of the 'Papanicolaou tooth brushing method' is violated, bristles are clung to the tooth surface when the user excessively presses, the swing amplitude of the bristles is reduced, and the cleaning effect is weakened. In addition, the current mainstream technology in the field of electric toothbrushes still dominates mechanical rotary or basic vibratory cleaning schemes, the core of which relies on physical friction of the bristles with the tooth surface for cleaning. Traditional mechanical toothbrush relies on brush hair direct contact friction, and clean scope is limited to brush head physical contact region, and vibration frequency is single, can't drive rivers and foam deep into the slit of tooth, gingival sulcus through high frequency vibration, and is relatively poor to the clean effect in hidden area. Disclosure of utility model The utility model mainly aims to provide a control circuit and an electric toothbrush, and aims to solve the problem that the traditional electric toothbrush is damaged by gum caused by the fact that a user cannot sense excessive force due to lack of a pressure feedback mechanism, and the defect of low cleaning efficiency of a basic vibration type cleaning scheme. In view of the above problems, the present application proposes a control circuit applied to an electric toothbrush including a motor, a battery, the control circuit comprising: the power supply circuit is used for performing power supply processing on the battery power supply and outputting the battery power supply; The pressure sensing circuit is used for collecting pressure signals and converting the pressure signals into first electric signals to be output; The output end of the motor driving circuit is connected with the controlled end of the motor and is used for driving the motor to work so as to provide sound wave vibration; The main control circuit is connected with the output end of the pressure sensing circuit and the input end of the motor driving circuit and is used for receiving and outputting a corresponding first control signal to the motor driving circuit according to a first electric signal output by the pressure sensing circuit so as to control the motor to enter a preset overvoltage mode; The main control circuit is also used for outputting a corresponding first driving signal to the pressure induction lamp circuit according to the first electric signal so that the pressure induction lamp circuit responds to the first driving signal and works. In one embodiment, the electric toothbrush further comprises a toothbrush head, and the pressure sensing circuit comprises: The pressure sensor switch is arranged in the toothbrush head, one end of the pressure sensor switch is connected with the pressure input end of the main control circuit, the other end of the pressure sensor switch is grounded, and the pressure sensor switch is used for detecting the pressure of the toothbrush head contacted with teeth and outputting a first electric signal to the main control circuit when the pressure sensor switch is triggered. In an embodiment, further comprising: The power switch circuit is connected with the main control circuit and is used for outputting corresponding second electric signals to the main control circuit when operated by a user; The main control circuit is used for receiving and outputting a corresponding second control signal to the motor driving circuit according to a second electric signal of the power switch circuit so as to control the motor to enter a corresponding working mode. In one embodiment, the power switching circuit includes: One end of the power button switch is connected with the switch input end of the main control circuit, and the other end of the power button switch is grounded; the power button switch is used for outputting a corresponding second electric signal to the main control circuit when operated by a user. In an embodiment, further comprising: the indicating lamp circuit is connected with the main control circuit and used for displaying the working state of the electric toothbrush; The main control circuit is also used for receiving and outputting a corresponding second driving signal to the indicator light circuit according to the second ele