Cleaning equipment intelligent protection control circuit, oral irrigator and electric toothbrush

Abstract

The utility model provides an intelligent protection control circuit of cleaning equipment, a water pick and an electric toothbrush, and belongs to the field of oral equipment circuits, the circuit comprises a cleaning control unit and an intelligent protection unit; the intelligent protection unit performs electric energy output control on the cleaning control unit, and the cleaning control unit at least drives and controls the load. Thus, through electric energy control of the intelligent protection unit on the cleaning control unit, the problem that a power supply cannot be turned off in time due to water leakage of a product circuit is solved, and the product experience is better and the safety is better; the machine state can be monitored in real time; on one hand, the working state of the load and the working state of the cleaning control unit can be fed back in time, and when the state is abnormal in the first time, electric energy output can be controlled through the intelligent protection unit for power-off protection.

Description

Technical Field

[0001] The utility model relates to the field of oral equipment circuits, and in particular provides an intelligent protection control circuit for cleaning equipment, a water flosser and an electric toothbrush. Background Art

[0002] When the user uses oral cleaning products such as water flossers and electric toothbrushes with water, the waterproofing fails and water enters the machine, causing the internal control components to fail. The product will automatically start, the sound will keep prompting, and the indicator light will keep on. The machine cannot be shut down manually or automatically in an emergency, which brings great inconvenience and discomfort to the user.

[0003] The current products have a water leakage detection function, or are waterproofed with glue filling as a whole. However, both have defects such as failure to turn off the power supply in time due to factors such as short circuits, poor heat dissipation, and high costs. For this reason, the utility model comes into being. Utility Model Content

[0004] In view of the above, the utility model aims to solve the problem that the cleaning equipment on the market fails to be shut down and operated due to water leakage or its own working problems.

[0005] Based on this aspect, the utility model provides an intelligent protection control circuit for cleaning equipment, characterized in that it includes:

[0006] A cleaning control unit, the cleaning control unit at least comprising:

[0007] A cleaning equipment control module, the cleaning equipment control module drives and detects a load on the cleaning equipment;

[0008] a first communication module, the first communication module being controlled to be connected to the cleaning device control module;

[0009] A warning module, wherein the warning module is controlled to be connected to the cleaning equipment control module;

[0010] An intelligent protection unit, the intelligent protection unit comprising at least:

[0011] An intelligent protection module, wherein the intelligent protection module is sealed and waterproof;

[0012] A power supply module, the power supply module is connected to the intelligent protection module for supplying power;

[0013] An electric energy switch module, the electric energy switch module is connected to the intelligent protection module and the cleaning equipment control module;

[0014] a second communication module, the second communication module being connected to the intelligent protection module, and the second communication module being communicatively connected to the first communication module;

[0015] The cleaning device control module feeds back working status data to the intelligent protection module through the first communication module and the second communication module; the intelligent protection module controls the supply of power to the cleaning device control module and the first communication module through the power switch module.

[0016] Preferably, the power switch module includes a triode switch.

[0017] Preferably, the power switch module also includes a first pull-up resistor, which is connected to the pin of the intelligent protection module through the transistor switch. When the intelligent protection module receives abnormal working status data or the working current is abnormal, the pin presents low impedance and outputs a low level, and the transistor switch cuts off the power supply to the cleaning equipment control module.

[0018] Preferably, it further comprises a warning module, wherein the warning module is controlled to be connected to the cleaning equipment control module or the intelligent protection module.

[0019] Preferably, the warning module includes an audio warning submodule and / or a light warning submodule.

[0020] Preferably, the intelligent protection module is sealed and waterproofed by glue filling.

[0021] Preferably, the working status data includes working status data of the load and working status data of the cleaning equipment control module.

[0022] The utility model also provides a water flosser, characterized in that it at least comprises a water flosser body and the above-mentioned intelligent protection control circuit for the cleaning device; the intelligent protection control circuit for the cleaning device is connected to the load working circuit of the water flosser body.

[0023] The utility model also provides an electric toothbrush, characterized in that it at least comprises an electric toothbrush body and the above-mentioned intelligent protection control circuit for cleaning equipment; the intelligent protection control circuit for cleaning equipment is connected to the load working circuit of the electric toothbrush body.

[0024] The beneficial effects of the above technical solution can come from one or a combination of the following:

[0025] By controlling the power of the cleaning control unit through the intelligent protection unit, the problem of water leakage in the product circuit and the inability to shut down the power in time is solved, making the product experience better and safer.

[0026] The machine status can be monitored in real time; on the one hand, the working status of the load and the working status of the cleaning control unit can be fed back in time. If the status is abnormal at the first time, the power output can be controlled by the intelligent protection unit to perform power-off protection.

[0027] It is only necessary to seal and waterproof the intelligent protection module in the intelligent protection unit, which is safe and reliable, ensuring the safety of the product while ensuring economy and saving costs; it does not affect the heat dissipation of other components and extends the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A circuit diagram of the utility model is expressed. DETAILED DESCRIPTION

[0029] The preferred embodiments described below are for example only, and those skilled in the art may think of other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0030] Unless the context clearly requires otherwise, throughout the specification and claims, the words "include", "comprising" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive sense; that is, in the sense of "including but not limited to".

[0031] Embodiment 1:

[0032] See also Figure 1, this embodiment provides an intelligent protection control circuit for cleaning equipment, including a cleaning control unit and an intelligent protection unit; the intelligent protection unit controls the power output of the cleaning control unit, and the cleaning control unit at least drives and controls the load. Specifically, the cleaning control unit includes at least a cleaning equipment control module and a first communication module; wherein the cleaning equipment control module drives and detects the load of the cleaning equipment, and the first communication module is controlled to be connected to the cleaning equipment control module. The intelligent protection unit includes at least an intelligent protection module, a power supply module, an electric energy switch module and a second communication module; wherein the power supply module is connected to the intelligent protection module, the electric energy switch module is connected to the intelligent protection module and the cleaning equipment control module, the second communication module is connected to the intelligent protection module, and the second communication module is connected to the first communication module for communication. In this embodiment, the cleaning equipment control module feeds back the working status data to the intelligent protection module through the first communication module and the second communication module; the intelligent protection module controls the power supply to the cleaning equipment control module and the first communication module through the electric energy switch module. In this way, by controlling the power of the cleaning control unit through the intelligent protection unit, the problem of water leakage in the product circuit and inability to shut down the power in time can be solved, so that the product experience is better and the safety is better; and the machine status can be monitored in real time; on the one hand, the working status of the load and the working status of the cleaning control unit can be fed back in time, and if the status is abnormal at the first time, the power output can be controlled by the intelligent protection unit to perform power-off protection; and it is only necessary to waterproof the intelligent protection module separately.

[0033] The above is necessary to achieve the technical purpose of this embodiment, and is further described in detail below with reference to the accompanying drawings:

[0034] Furthermore, the circuit structure of this embodiment is arranged in a cleaning device. It is easy to know that in the prior art, the overall components are usually encapsulated by glue filling, but the overall glue filling is not conducive to heat dissipation and will affect the service life. As a better choice of this embodiment, this embodiment adopts core waterproofing, that is, it is only necessary to waterproof the intelligent protection unit to keep the operation stable and independent. Further, it is only necessary to waterproof the intelligent protection module of the intelligent protection unit. Preferably, the intelligent protection module adopts a single-chip microcomputer.

[0035] As a preferred implementation of this embodiment, the power switch module includes a transistor switch, and the switch control is performed through the level signal output of the single-chip microcomputer pin. Specifically, the power switch module also includes a first pull-up resistor (R1), and the first pull-up resistor (R1) is connected to the pin of the single-chip microcomputer through the transistor switch. The display reminder pin of the single-chip microcomputer outputs a high level to generate a voltage difference between the B pole and the E pole of the transistor switch (Q1), so that the transistor switch (Q1) is saturated, thereby connecting the C pole and the E pole of the transistor switch (Q1), thereby supplying power to the cleaning equipment control module. On the contrary, when the single-chip microcomputer receives abnormal working status data or the working current is abnormal, the pin presents low impedance, outputs a low level, and the transistor switch (Q1) cuts off the power supply of the cleaning equipment control module.

[0036] In the cleaning control unit, the cleaning equipment control module serves as the controller of the cleaning equipment, and controls the load of the cleaning equipment at least through the load drive, preferably an MCU. The cleaning equipment control module packages the load working status data and its own working status data. When working, the cleaning equipment control module will send the equipment 1-10 group status to the intelligent protection module within 50-300ms at a regular time. The detection controller detects the current threshold of the current detection foot according to the preset state, and the single-chip microcomputer detects the current detection foot to determine whether the main controller of the cleaning device is working normally. When the machine is working normally, the cleaning equipment control module provides power to the cleaning equipment control module. Specifically, a current collection resistor (R2, R3) is also connected between the intelligent protection module and the cleaning equipment control module to collect the working current of the cleaning equipment control module. When it is found that the working current exceeds the normal threshold, the power-off protection can also be performed. As shown in the figure, the E pole of the transistor switch (Q1) is connected between the two current collection resistors (R2, R3).

[0037] In this embodiment, when the cleaning device is abnormal, a warning module can be set to give a reminder. Specifically, the warning module includes a sound display warning submodule and / or a light display warning submodule. Prompting through sound and light plays a dual warning role. In the circuit design, the warning module can be integrated into the cleaning control unit; or it can also be integrated into the intelligent protection unit. In this embodiment, the warning module is connected to the cleaning device control module, which facilitates warnings while displaying the working status of the cleaning device (including but not limited to the display of parameters such as gear position).

[0038] It is worth mentioning that, compared with the traditional fully enclosed waterproof, in this embodiment, only the intelligent protection module (i.e., the single-chip microcomputer) needs to be encapsulated by glue. Other components can be arranged according to the actual design, preferably in the area prone to water leakage, so that the current abnormality caused by water leakage (short circuit causing current overload, etc.) can be collected by the current collection resistor (R2, R3) at the first time, which is convenient for water leakage protection. Therefore, the waterproof cost is greatly reduced, and the layout position of the components is more friendly.

[0039] In view of the above, the working status data includes the working status data of the load and the working status data of the cleaning device control module. The working status data of the load can be collected by the cleaning device control module and sent to the intelligent protection module in the form of a data packet, and the sending method is implemented by the first communication module and the second communication module. The communication form between the two can be a wired method or a wireless method of a communication protocol, which is not limited here.

[0040] Beneficial effects of this embodiment:

[0041] By controlling the power of the cleaning control unit through the intelligent protection unit, the problem of water leakage in the product circuit and the inability to shut down the power in time is solved, making the product experience better and safer.

[0042] The machine status can be monitored in real time; on the one hand, the working status of the load and the working status of the cleaning control unit can be fed back in time. If the status is abnormal at the first time, the power output can be controlled by the intelligent protection unit to perform power-off protection.

[0043] Only the intelligent protection module in the intelligent protection unit is sealed and waterproofed, which is safe and reliable, ensuring the safety of the product while ensuring economy and saving costs; it does not affect the heat dissipation of other components and extends the service life.

[0044] Embodiment 2:

[0045] Please combine Figure 1 This embodiment provides a water flosser, which at least includes a water flosser body and the intelligent protection control circuit of the cleaning device in Example 1, wherein the intelligent protection control circuit of the cleaning device described in Example 1 is connected to the load working circuit of the water flosser body, and can be used for water leakage detection and real-time monitoring of the working status of the water flosser.

[0046] Specifically, the power module can be implemented as the power source of the oral irrigator body, and the entire oral irrigator supplies power to the cleaning control unit through the intelligent protection unit, and then supplies power to the load of the oral irrigator through the cleaning control unit.

[0047] Specifically, the cleaning control unit includes at least a cleaning device control module and a first communication module; wherein the cleaning device control module drives and detects the load of the cleaning device, and the first communication module is controlled to be connected to the cleaning device control module. The intelligent protection unit includes at least an intelligent protection module, a power module, an electric energy switch module, and a second communication module; wherein the power module supplies power to the intelligent protection module, the electric energy switch module is connected to the intelligent protection module and the cleaning device control module, the second communication module is connected to the intelligent protection module, and the second communication module is connected to the first communication module for communication.

[0048] Furthermore, the circuit structure of this embodiment is arranged in a cleaning device. It is easy to know that in the prior art, the overall components are usually encapsulated by glue filling, but glue filling is not conducive to heat dissipation and will affect the service life. As a better choice of this embodiment, this embodiment adopts core waterproofing, that is, it is only necessary to waterproof the intelligent protection unit to keep the operation stable and independent. Further, it is only necessary to waterproof the intelligent protection module of the intelligent protection unit. Preferably, the intelligent protection module adopts a single-chip microcomputer.

[0049] As a preferred implementation of this embodiment, the power switch module includes a transistor switch, and the switch control is performed through the level signal output of the single-chip microcomputer pin. Specifically, the power switch module also includes a first pull-up resistor (R1), and the first pull-up resistor (R1) is connected to the pin of the single-chip microcomputer through the transistor switch. The display reminder pin of the single-chip microcomputer outputs a high level to generate a voltage difference between the B pole and the E pole of the transistor switch (Q1), so that the transistor switch (Q1) is saturated, thereby connecting the C pole and the E pole of the transistor switch (Q1), thereby supplying power to the cleaning equipment control module. On the contrary, when the single-chip microcomputer receives abnormal working status data or the working current is abnormal, the pin presents low impedance, outputs a low level, and the transistor switch (Q1) cuts off the power supply of the cleaning equipment control module.

[0050] In the cleaning control unit, the cleaning device control module serves as the controller of the water flosser body, and controls the load of the cleaning device at least through load drive, preferably MCU. The cleaning device control module packages the load working status data and its own working status data. When working, the cleaning device control module will send the device 1-10 group status to the intelligent protection module within 50-300ms. The detection controller is based on the preset state, and the single-chip microcomputer detects the current threshold of the current detection foot to determine whether the main controller of the cleaning device is working normally. When the water flosser body is working normally, the cleaning device control module provides power to the cleaning device control module. Specifically, a current collection resistor (R2, R3) is also connected between the intelligent protection module and the cleaning device control module to collect the working current of the cleaning device control module. When it is found that the working current exceeds the normal threshold, the power can also be cut off for protection. As shown in the figure, the E pole of the transistor switch (Q1) is connected between the two current collection resistors (R2, R3).

[0051] In this embodiment, when the water flosser body is abnormal, a warning is given through the warning module. Specifically, the warning module includes a sound display warning submodule and / or a light display warning submodule. Prompting through sound and light plays a dual warning role. In the circuit design, the warning module can be integrated into the cleaning control unit; or it can also be integrated into the intelligent protection unit. In this embodiment, the warning module is connected to the cleaning device control module, which is convenient for warnings and can display the working status of the water flosser body (including but not limited to the display of parameters such as gear position).

[0052] It is worth mentioning that, compared with the traditional fully enclosed waterproof, in this embodiment, only the intelligent protection module (i.e., the single chip microcomputer) needs to be encapsulated by glue. Other components can be arranged according to the actual design, preferably in the area prone to water leakage, so that the current abnormality caused by water leakage can be collected by the current collection resistor (R2, R3) in the first time, which is convenient for water leakage protection. Therefore, the waterproof cost is greatly reduced, and the layout position of the components is more friendly.

[0053] In view of the above, the working status data includes the working status data of the load and the working status data of the cleaning device control module. The working status data of the load can be collected by the cleaning device control module and sent to the intelligent protection module in the form of a data packet, and the sending method is implemented by the first communication module and the second communication module. The communication form between the two can be a wired method or a wireless method of a communication protocol, which is not limited here.

[0054] Beneficial effects of this embodiment:

[0055] By controlling the power of the cleaning control unit through the intelligent protection unit, the problem of water leakage in the water flosser circuit and the inability to shut off the power in time is solved, providing a better product experience and better safety.

[0056] The status of the water flosser can be monitored in real time; on the one hand, the working status of the load and the working status of the cleaning control unit can be fed back in time. If the status is abnormal at the first time, the power output can be controlled by the intelligent protection unit to perform power-off protection.

[0057] Only the intelligent protection module in the intelligent protection unit is sealed and waterproofed, which is safe and reliable, ensuring the safety of the product while ensuring economy and saving costs; it does not affect the heat dissipation of other components and extends the service life.

[0058] Embodiment 3:

[0059] Please combine Figure 1 This embodiment provides an electric toothbrush, including an electric toothbrush body and the intelligent protection control circuit of the cleaning device in Example 1, wherein the intelligent protection control circuit of the cleaning device described in Example 1 is connected to the load working circuit of the electric toothbrush body, and can be used for water leakage detection and real-time monitoring of the working status of the electric toothbrush.

[0060] Specifically, the power module can be implemented as the power supply of the electric toothbrush body, and the entire electric toothbrush supplies power to the cleaning control unit through the intelligent protection unit, and then supplies power to the load of the electric toothbrush through the cleaning control unit.

[0061] Specifically, the cleaning control unit includes at least a cleaning device control module and a first communication module; wherein the cleaning device control module drives and detects the load of the cleaning device, and the first communication module is controlled to be connected to the cleaning device control module. The intelligent protection unit includes at least an intelligent protection module, a power module, an electric energy switch module, and a second communication module; wherein the power module supplies power to the intelligent protection module, the electric energy switch module is connected to the intelligent protection module and the cleaning device control module, the second communication module is connected to the intelligent protection module, and the second communication module is connected to the first communication module for communication.

[0062] Furthermore, the circuit structure of this embodiment is arranged in a cleaning device. It is easy to know that in the prior art, the overall components are usually encapsulated by glue filling, but the overall glue filling is not conducive to heat dissipation and will affect the service life. As a better choice of this embodiment, this embodiment adopts core waterproofing, that is, it is only necessary to waterproof the intelligent protection unit to keep the operation stable and independent. Further, it is only necessary to waterproof the intelligent protection module of the intelligent protection unit. Preferably, the intelligent protection module adopts a single-chip microcomputer.

[0063] As a preferred implementation of this embodiment, the power switch module includes a transistor switch, and the switch control is performed through the level signal output of the single-chip microcomputer pin. Specifically, the power switch module also includes a first pull-up resistor (R1), and the first pull-up resistor (R1) is connected to the pin of the single-chip microcomputer through the transistor switch. The display reminder pin of the single-chip microcomputer outputs a high level to generate a voltage difference between the B pole and the E pole of the transistor switch (Q1), so that the transistor switch (Q1) is saturated, thereby connecting the C pole and the E pole of the transistor switch (Q1), thereby supplying power to the cleaning equipment control module. On the contrary, when the single-chip microcomputer receives abnormal working status data or the working current is abnormal, the pin presents low impedance, outputs a low level, and the transistor switch (Q1) cuts off the power supply of the cleaning equipment control module.

[0064] In the cleaning control unit, the cleaning device control module serves as the controller of the electric toothbrush body, and controls the load of the cleaning device at least through load drive, preferably MCU. The cleaning device control module packages the load working status data and its own working status data. When working, the cleaning device control module will send the device 1-10 group status to the intelligent protection module within 50-300ms. The detection controller detects the current threshold of the current detection foot according to the preset state, and the single-chip microcomputer detects the current detection foot to determine whether the main controller of the cleaning device is working normally. When the electric toothbrush body is working normally, the cleaning device control module provides power to the cleaning device control module. Specifically, a current collection resistor (R2, R3) is also connected between the intelligent protection module and the cleaning device control module to collect the working current of the cleaning device control module. When it is found that the working current exceeds the normal threshold, the power can also be cut off for protection. As shown in the figure, the E pole of the transistor switch (Q1) is connected between the two current collection resistors (R2, R3).

[0065] In this embodiment, when the electric toothbrush body is abnormal, a warning module can be set to give a reminder. Specifically, the warning module includes a sound display warning submodule and / or a light display warning submodule. Prompting through sound and light plays a dual warning role. In the circuit design, the warning module can be integrated into the cleaning control unit; or it can also be integrated into the intelligent protection unit. In this embodiment, the warning module is connected to the cleaning device control module, which is convenient for warnings and can display the working status of the electric toothbrush body (including but not limited to the display of parameters such as gear position).

[0066] It is worth mentioning that, compared with the traditional fully enclosed waterproof, in this embodiment, only the intelligent protection module (i.e., the single chip microcomputer) needs to be encapsulated by glue. Other components can be arranged according to the actual design, preferably in the area prone to water leakage, so that the current abnormality caused by water leakage can be collected by the current collection resistor (R2, R3) in the first time, which is convenient for water leakage protection. Therefore, the waterproof cost is greatly reduced, and the layout position of the components is more friendly.

[0067] In view of the above, the working status data includes the working status data of the load and the working status data of the cleaning device control module. The working status data of the load can be collected by the cleaning device control module and sent to the intelligent protection module in the form of a data packet, and the sending method is implemented by the first communication module and the second communication module. The communication form between the two can be a wired method or a wireless method of a communication protocol, which is not limited here.

[0068] Beneficial effects of this embodiment:

[0069] By controlling the power of the cleaning control unit through the intelligent protection unit, the problem of the electric toothbrush circuit leaking and not being able to shut down the power in time is solved, making the product experience better and safer.

[0070] The status of the electric toothbrush can be monitored in real time; on the one hand, the working status of the load and the working status of the cleaning control unit can be fed back in time. If the status is abnormal at the first time, the power output can be controlled by the intelligent protection unit to perform power-off protection.

[0071] Only the intelligent protection module in the intelligent protection unit is sealed and waterproofed, which is safe and reliable, ensuring the safety of the product while ensuring economy and saving costs; it does not affect the heat dissipation of other components and extends the service life.

[0072] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

[0073] It should be understood by those skilled in the art that the embodiments of the present invention described above are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed or modified in any way.

Claims

1. Intelligent protection control circuit for cleaning equipment, characterized in that: include: A cleaning control unit, the cleaning control unit at least comprising: A cleaning equipment control module, the cleaning equipment control module drives and detects a load on the cleaning equipment; a first communication module, the first communication module being controlled to be connected to the cleaning device control module; An intelligent protection unit, the intelligent protection unit comprising at least: An intelligent protection module, wherein the intelligent protection module is sealed and waterproof; A power supply module, the power supply module is connected to the intelligent protection module for supplying power; An electric energy switch module, the electric energy switch module is connected to the intelligent protection module and the cleaning equipment control module; a second communication module, the second communication module being connected to the intelligent protection module, and the second communication module being communicatively connected to the first communication module; The cleaning device control module feeds back working status data to the intelligent protection module through the first communication module and the second communication module; the intelligent protection module controls the supply of power to the cleaning device control module and the first communication module through the power switch module.

2. According to claim 1, the intelligent protection control circuit for cleaning equipment is characterized in that: The electric energy switch module includes a triode switch.

3. According to claim 2, the intelligent protection control circuit for cleaning equipment is characterized in that: The power switch module also includes a first pull-up resistor, which is connected to the pin of the intelligent protection module through the transistor switch. When the intelligent protection module receives abnormal working status data or the working current is abnormal, the pin presents low impedance and outputs a low level, and the transistor switch cuts off the power supply of the cleaning equipment control module.

4. The intelligent protection control circuit for cleaning equipment according to claim 1 is characterized in that: It also includes a warning module, which is controlled to be connected to the cleaning equipment control module or the intelligent protection module.

5. According to claim 4, the intelligent protection control circuit for cleaning equipment is characterized in that: The warning module includes a sound warning submodule and / or a light warning submodule.

6. The intelligent protection control circuit for cleaning equipment according to claim 1 is characterized in that: The intelligent protection module is sealed and waterproofed by glue filling.

7. The intelligent protection control circuit for cleaning equipment according to claim 1 is characterized in that: The working status data includes working status data of the load and working status data of the cleaning equipment control module.

8. A water flosser, characterized in that: It at least comprises a water flosser body and the cleaning device intelligent protection control circuit as claimed in any one of claims 1 to 7; the cleaning device intelligent protection control circuit is connected to the load working circuit of the water flosser body.

9. An electric toothbrush, characterized in that It at least comprises an electric toothbrush body and the cleaning device intelligent protection control circuit according to any one of claims 1 to 7; the cleaning device intelligent protection control circuit is connected to the load working circuit of the electric toothbrush body.

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