Disinfecting device and electric toothbrush system
By introducing a combination of trigger circuit and drive circuit into the electric toothbrush sterilization device, the problem of unstable start-up of ultraviolet lamp tubes is solved, and a stable sterilization effect of electric toothbrush heads is achieved.
Patent Information
- Application Number
- CN202522490339.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-24
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-24
AI Technical Summary
Existing toothbrush sterilization devices require high-frequency, high-voltage AC power to start the ultraviolet lamps due to the physical characteristics of gas discharge and their high impedance in a cold state. Furthermore, the impedance changes after lighting up cause the lamps to be unstable, resulting in unstable sterilization.
The system employs a combination of trigger circuit, drive circuit, and main control circuit. It converts DC voltage to AC voltage through Hall effect switch circuit and transformer to drive the ultraviolet lamp. Combined with protection circuit and indicator circuit, it ensures stable power supply and disinfection effect.
Stable disinfection of electric toothbrush heads has been achieved, improving the working stability and reliability of the disinfection device and ensuring the normal operation of the ultraviolet lamp.
Smart Images
Figure CN224925409U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric toothbrush disinfection technology, and in particular to a disinfection device and an electric toothbrush system. Background Technology
[0002] As tools that come into direct contact with the mouth, toothbrush heads are prone to harboring bacteria and microorganisms. Although toothpaste contains antibacterial ingredients, toothbrushes often become damp after use and may be stored in warm, humid environments like bathrooms, conditions highly conducive to bacterial growth. Therefore, even between brushing sessions, bacteria can multiply significantly on the toothbrush head. For this reason, regular disinfection of toothbrushes is crucial.
[0003] In existing technologies, toothbrush disinfection often uses ultraviolet (UV) lamps. However, due to the gas discharge physical characteristics and high impedance characteristics of UV lamps in a cold state, high-frequency, high-voltage AC power is usually required for startup. Furthermore, the impedance of the UV lamp drops sharply after it is turned on, which can easily lead to unstable operation. Utility Model Content
[0004] The main purpose of this invention is to provide a disinfection device and an electric toothbrush system, which aims to improve the stability of the disinfection device's operation.
[0005] To achieve the above objectives, the present invention proposes a disinfection device for use with electric toothbrushes. The disinfection device includes a disinfection body with a receiving cavity for accommodating the brush head of the electric toothbrush. The disinfection device also includes: Power supply end; Ultraviolet lamp tube; Main control circuit; A trigger circuit, wherein the input terminal of the trigger circuit is electrically connected to the power supply terminal, and the output terminal of the trigger circuit is electrically connected to the main control circuit; the trigger circuit is used to trigger when the brush head is contained in the receiving cavity, and output a trigger signal. A driving circuit, the output of which is electrically connected to the ultraviolet lamp; the driving circuit is used to convert the input DC voltage into AC voltage to drive the ultraviolet lamp. A first switching circuit is connected in series between the output terminal of the trigger circuit and the input terminal of the drive circuit, and the controlled terminal of the first switching circuit is electrically connected to the main control circuit. The main control circuit is used to receive the trigger signal and output a first switch control signal to the first switch circuit, so that the first switch circuit can connect the output terminal of the trigger circuit and the input terminal of the drive circuit.
[0006] In one embodiment, the trigger circuit includes a Hall switch circuit, which includes a Hall switch transistor, a first capacitor, a second capacitor, and a first resistor; The first end of the Hall switch is electrically connected to the power supply terminal, the first end of the first capacitor, the first end of the first resistor, and the first end of the first switch circuit. The second end of the Hall switch is electrically connected to the second end of the first capacitor, the ground terminal, and the second end of the second capacitor. The third end of the Hall switch is electrically connected to the second end of the first resistor, the first end of the second capacitor, and the main control circuit.
[0007] In one embodiment, the driving circuit includes a first switching transistor, a second switching transistor, a third capacitor, a fourth capacitor, a fifth capacitor, a second resistor, a third resistor, a first inductor, and a transformer; the transformer includes a primary winding and a secondary winding, and the primary winding includes a first primary winding and a second primary winding. Wherein, the first end of the first inductor is electrically connected to the input end of the first switching circuit; the second end of the first inductor is electrically connected to the second end of the second primary winding, the first end of the second resistor, and the second end of the third resistor; the first end of the first primary winding is electrically connected to the second end of the second resistor and the controlled end of the first switching transistor; the second end of the first primary winding is electrically connected to the first end of the third resistor and the controlled end of the second switching transistor; the first end of the second primary winding is electrically connected to the first end of the first switching transistor and the first end of the third capacitor; the third end of the second primary winding is electrically connected to the first end of the second switching transistor and the second end of the third capacitor; the second end of the first switching transistor is electrically connected to the second end of the second switching transistor and the ground terminal; the first end of the secondary winding is electrically connected to the second end of the fourth capacitor and the second end of the fifth capacitor; the first end of the fourth capacitor is electrically connected to the first power supply terminal of the ultraviolet lamp; and the first end of the fifth capacitor is electrically connected to the second power supply terminal of the ultraviolet lamp.
[0008] In one embodiment, the first switching circuit includes a second inductor, a third switching transistor, a fourth switching transistor, a fourth resistor, a fifth resistor, a sixth resistor, and a seventh resistor; Wherein, the first end of the second inductor is electrically connected to the first end of the third switch and the trigger circuit; the second end of the second inductor is electrically connected to the first end of the fourth switch; the controlled end of the third switch is electrically connected to the first end of the fourth resistor, and the second end of the third switch is electrically connected to the first end of the fifth resistor; the second end of the fourth resistor is electrically connected to the main control circuit; the second end of the fifth resistor is electrically connected to the drive circuit; the controlled end of the fourth switch is electrically connected to the second end of the sixth resistor and the first end of the seventh resistor, and the second end of the fourth switch is electrically connected to the second end of the seventh resistor and the ground terminal; the first end of the sixth resistor is electrically connected to the main control circuit.
[0009] In one embodiment, the disinfection device further includes a protection circuit, the input terminal of which is electrically connected to the power supply terminal, and the output terminal of which is electrically connected to the input terminal of the trigger circuit; the protection circuit is used to limit the voltage input to the power supply terminal within a preset voltage range and output it.
[0010] In one embodiment, the protection circuit includes a fuse, a TVS diode, a sixth capacitor, and a protection chip; Specifically, the first end of the fuse is electrically connected to the power supply terminal; the second end of the fuse is electrically connected to the cathode of the TVS diode, the first end of the sixth capacitor, and the third end of the protection chip; the anode of the TVS diode is electrically connected to the ground terminal; the second end of the sixth capacitor is electrically connected to the ground terminal; the first, second, fifth, and sixth ends of the protection chip are electrically connected to the ground terminal; and the fourth end of the protection chip is electrically connected to the trigger circuit and the main control circuit.
[0011] In one embodiment, the disinfection device further includes a prompting circuit, the input terminal of which is electrically connected to the main control circuit, and the power supply terminal of which is electrically connected to the output terminal of the protection circuit; the prompting circuit is used to output a prompting signal when it receives a prompting control signal output by the main control circuit.
[0012] In one embodiment, the disinfection device further includes a second switching circuit, which is connected in series between the output terminal of the trigger circuit and the first terminal of the first switching circuit; the second switching circuit is used to turn on or off the path between the output terminal of the trigger circuit and the first terminal of the first switching circuit when triggered.
[0013] In one embodiment, the disinfection device further includes a wireless charging circuit, wherein the controlled terminal of the wireless charging circuit is electrically connected to the main control circuit, the first terminal of the wireless charging circuit is electrically connected to the power supply terminal, and the second terminal of the wireless charging circuit is electrically connected to the ground terminal. The main control circuit is also used to output a wireless charging control signal to the wireless charging circuit when the trigger signal is received, so that the wireless charging circuit can charge the electric toothbrush.
[0014] This utility model also proposes an electric toothbrush system, which includes an electric toothbrush and a disinfection device as described in any of the above claims; The wireless charging receiver of the electric toothbrush is located on the side close to the brush head.
[0015] This utility model's technical solution employs a disinfection device that effectively improves the stability of its operation. The disinfection device includes a power supply terminal, an ultraviolet lamp, a main control circuit, a trigger circuit, a drive circuit, and a first switching circuit. The input terminal of the trigger circuit is electrically connected to the power supply terminal, and its output terminal is electrically connected to the main control circuit. This allows the trigger circuit to output a trigger signal to the main control circuit when the receiving cavity contains an electric toothbrush head. The main control circuit then controls the first switching circuit to open the path between the power supply terminal and the drive circuit, thereby enabling the drive circuit to convert the DC voltage input from the power supply terminal into AC voltage to drive the ultraviolet lamp. In this way, the disinfection device can stably drive the ultraviolet lamp after the electric toothbrush head is connected, thus stably disinfecting the electric toothbrush head. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the modules of the disinfection device of this utility model; Figure 2 This is a schematic diagram of a module of an embodiment of the disinfection device of this utility model; Figure 3 This is a circuit diagram of an embodiment of the disinfection device of this utility model; Figure 4 This is a circuit diagram of the drive circuit in the disinfection device of this utility model; Figure 5 This is a circuit diagram of the protection circuit in the disinfection device of this utility model.
[0018] Explanation of icon numbers: 10. Main control circuit; 20. Trigger circuit; 30. Drive circuit; 40. First switch circuit; 50. Protection circuit; 60. Indication circuit; 70. Second switch circuit; 80. Wireless charging circuit; R1-R7, first resistor-seventh resistor; C1-C6, first capacitor-sixth capacitor; Q1-Q4, first switch transistor-fourth switch transistor; T1, transformer; U2, protection chip; F1, fuse; L1, first inductor.
[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0022] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0023] As tools that come into direct contact with the mouth, toothbrush heads are prone to harboring bacteria and microorganisms. Although toothpaste contains antibacterial ingredients, toothbrushes often become damp after use and may be stored in warm, humid environments like bathrooms, conditions highly conducive to bacterial growth. Therefore, even between brushing sessions, bacteria can multiply significantly on the toothbrush head. For this reason, regular disinfection of toothbrushes is crucial.
[0024] In existing technologies, toothbrush disinfection often uses ultraviolet (UV) lamps. However, due to the gas discharge physical characteristics and high impedance characteristics of UV lamps in a cold state, high-frequency, high-voltage AC power is usually required for startup. Furthermore, the impedance of the UV lamp drops sharply after it is turned on, which can easily lead to unstable operation.
[0025] To solve the above problems, refer to Figure 1 , Figure 3 and Figure 4 This utility model proposes a disinfection device for use with an electric toothbrush. The disinfection device includes a disinfection body with a receiving cavity for accommodating the brush head of the electric toothbrush. The disinfection device also includes: Power supply end; Ultraviolet lamp tube; Main control circuit 10; The trigger circuit 20 has its input terminal electrically connected to the power supply terminal and its output terminal electrically connected to the main control circuit 10. The trigger circuit 20 is used to trigger when the brush head is contained in the receiving cavity and output a trigger signal. The driving circuit 30 is electrically connected to the ultraviolet lamp tube at its output terminal. The driving circuit 30 is used to convert the input DC voltage into AC voltage to drive the ultraviolet lamp tube to work. A first switching circuit 40 is connected in series between the output terminal of the trigger circuit 20 and the input terminal of the drive circuit 30, and the controlled terminal of the first switching circuit 40 is electrically connected to the main control circuit 10. The main control circuit 10 is used to receive the trigger signal and output a first switch control signal to the first switch circuit 40, so that the first switch circuit can open the path between the output terminal of the trigger circuit 20 and the input terminal of the drive circuit 30.
[0026] In this embodiment, the voltage connected to the power supply terminal is a 5V, 1A DC voltage. This 5V, 1A DC voltage can be converted from 220V AC mains power to a 5V, 1A DC voltage via an external adapter, thus providing a stable power supply voltage for the disinfection device.
[0027] In this embodiment, the ultraviolet lamp is a light source that emits ultraviolet light. This light source can destroy the DNA or RNA structure of microorganisms, causing them to lose their ability to replicate and die. This applies to most pathogens. The ultraviolet lamp can be a low-pressure mercury lamp, a medium-pressure mercury lamp, or an excimer lamp. The ultraviolet lamp used in this embodiment is a low-pressure mercury lamp or a medium-pressure mercury lamp, which requires high-frequency alternating current to drive it. Therefore, a corresponding driving circuit 30 is needed to convert the DC voltage input from the power supply terminal into the corresponding high-frequency alternating current to drive the ultraviolet lamp to operate stably.
[0028] In this embodiment, the main control circuit 10 can be implemented using a main controller, such as a DSP (Digital Signal Processor), MCU (Microcontroller Unit), FPGA (Field Programmable Gate Array), or SOC (System-on-Chip). In this embodiment, the main control circuit 10 can be implemented using, for example... Figure 3 The U1 implementation in [the code].
[0029] In this embodiment, the trigger circuit 20 can be implemented using a physical trigger circuit 20, an inductive trigger circuit 20, or the like. By electrically connecting the input terminal of the trigger circuit 20 to the power supply terminal and the output terminal of the trigger circuit 20 to the main control circuit 10, a path is established between the power supply terminal and the main control circuit 10 when the toothbrush head of the electric toothbrush is contained within the cavity, thereby enabling the main control circuit 10 to receive a trigger signal. It is understood that, in this embodiment, the trigger signal received by the main control circuit 10 is the DC voltage output from the power supply terminal. Optionally, the trigger circuit 20 includes a Hall switch circuit, which includes a Hall switch transistor, a first capacitor C1, a second capacitor C2, and a first resistor R1. The first terminal of the Hall switch transistor is electrically connected to the power supply terminal, the first terminal of the first capacitor C1, the first terminal of the first resistor R1, and the first terminal of the first switch circuit 40. The second terminal of the Hall switch transistor is electrically connected to the second terminal of the first capacitor C1, the ground terminal, and the second terminal of the second capacitor C2. The third terminal of the Hall switch transistor is electrically connected to the second terminal of the first resistor R1, the first terminal of the second capacitor C2, and the main control circuit 10. It should be noted that when using a Hall switch transistor in the trigger circuit 20, a corresponding permanent magnet needs to be placed in the area of the Hall switch transistor on the electric toothbrush to trigger the Hall switch transistor to turn on or off. The first capacitor C1 and the second capacitor C2 are filter capacitors.
[0030] In this embodiment, the driving circuit 30 can be implemented using an inductive ballast circuit, thereby converting the DC power input at the power supply terminal into high-frequency AC power and outputting it to the power supply terminal of the ultraviolet lamp tube to enable the ultraviolet lamp tube to operate. The driving circuit 30 includes a first switching transistor Q1, a second switching transistor Q2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a second resistor R2, a third resistor R3, a first inductor L1, and a transformer T1. The transformer T1 includes a primary winding and a secondary winding, the primary winding including a first primary winding and a second primary winding. The first end of the first inductor L1 is electrically connected to the input terminal of the first switching circuit 40, and the second end of the first inductor L1 is electrically connected to the second end of the second primary winding, the first end of the second resistor R2, and the second end of the third resistor R3. The first end of the first primary winding is electrically connected to the second end of the second resistor R2 and the controlled terminal of the first switching transistor Q1, and the second end of the first primary winding is electrically connected to the input terminal of the second switching circuit 40. The first terminal of the third resistor R3 is electrically connected to the controlled terminal of the second switch Q2; the first terminal of the second primary winding is electrically connected to the first terminal of the first switch Q1 and the first terminal of the third capacitor C3, and the third terminal of the second primary winding is electrically connected to the first terminal of the second switch Q2 and the second terminal of the third capacitor C3; the second terminal of the first switch Q1 is electrically connected to the second terminal of the second switch Q2 and the ground terminal; the first terminal of the secondary winding is electrically connected to the second terminal of the fourth capacitor C4, and the second terminal of the secondary winding is electrically connected to the second terminal of the fifth capacitor C5; the first terminal of the fourth capacitor C4 is electrically connected to the first power supply terminal of the ultraviolet lamp; and the first terminal of the fifth capacitor C5 is electrically connected to the second power supply terminal of the ultraviolet lamp. In this embodiment, the first switch Q1 and the second switch Q2 will be in an alternating on and off state, thereby generating corresponding alternating current, which is then converted into the alternating current required by the UV lamp by the transformer T1.
[0031] In this embodiment, the first switching circuit 40 can be implemented using at least one switching transistor, such as a MOSFET, IGBT, thyristor, transistor, or power transistor, and / or using at least one switching device, such as a contactor, circuit breaker, or relay. By electrically connecting the first terminal of the first switching circuit 40 to the power supply terminal, the second terminal of the first switching circuit 40 to the input terminal of the drive circuit 30, and the controlled terminal of the first switching circuit 40 to the main control circuit 10, a path is established between the output terminal of the drive circuit and the input terminal of the drive circuit 30 when a first switching control signal is received from the main control circuit 10, thereby supplying power to the drive circuit 30. Optionally, the first switching circuit 40 includes a second inductor, a third switching transistor Q3, a fourth switching transistor Q4, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7; wherein, the first end of the second inductor is electrically connected to the first end of the third switching transistor Q3 and the trigger circuit 20; the second end of the second inductor is electrically connected to the first end of the fourth switching transistor Q4; the controlled end of the third switching transistor Q3 is electrically connected to the first end of the fourth resistor R4, and the second end of the third switching transistor Q3 is electrically connected to the first end of the fifth resistor R5; the second end of the fourth resistor R4 is electrically connected to the main control circuit 10; the second end of the fifth resistor R5 is electrically connected to the drive circuit 30; the controlled end of the fourth switching transistor Q4 is electrically connected to the second end of the sixth resistor R6 and the first end of the seventh resistor R7, and the second end of the fourth switching transistor Q4 is electrically connected to the second end of the seventh resistor R7 and the ground terminal; the first end of the sixth resistor R6 is electrically connected to the main control circuit 10.
[0032] By employing a disinfection device, the stability of its operation can be effectively improved. The disinfection device includes a power supply terminal, an ultraviolet lamp, a main control circuit 10, a trigger circuit 20, a drive circuit 30, and a first switching circuit 40. The input terminal of the trigger circuit 20 is electrically connected to the power supply terminal, and its output terminal is electrically connected to the main control circuit 10. This allows the trigger circuit 20 to output a trigger signal to the main control circuit 10 when the receiving cavity contains the electric toothbrush head. The main control circuit 10 then controls the first switching circuit 40 to open the path between the power supply terminal and the drive circuit 30. This enables the drive circuit 30 to convert the DC voltage input from the power supply terminal into AC voltage to drive the ultraviolet lamp. In this way, the disinfection device can stably drive the ultraviolet lamp after the electric toothbrush head is connected, thus stably disinfecting the electric toothbrush head.
[0033] refer to Figure 2 and Figure 5In one embodiment of the present invention, the disinfection device further includes a protection circuit 50, the input terminal of the protection circuit 50 being electrically connected to the power supply terminal, and the output terminal of the protection circuit 50 being electrically connected to the input terminal of the trigger circuit 20; the protection circuit 50 is used to limit the voltage input to the power supply terminal within a preset voltage range and output it.
[0034] In this embodiment, the voltage output from the power supply terminal still needs to be processed by the corresponding protection circuit 50 to prevent damage to the required power supply voltage in the event of an unstable output voltage. Therefore, the input terminal of the protection circuit 50 is electrically connected to the power supply terminal, and the output terminal is electrically connected to the input terminal of the trigger circuit 20. The output terminal of the protection circuit 50 is also electrically connected to the power supply terminal of the main control circuit 10. After being limited by the protection circuit 50, the voltage output from the power supply terminal is obtained as a safe voltage within a preset voltage range. Optionally, the protection circuit 50 includes a fuse F1, a TVS diode, a sixth capacitor C6, and a protection chip U2; wherein, the first end of the fuse F1 is electrically connected to the power supply terminal, the second end of the fuse F1 is electrically connected to the cathode of the TVS diode, the first end of the sixth capacitor C6, and the third end of the protection chip U2; the anode of the TVS diode is electrically connected to the ground terminal; the second end of the sixth capacitor C6 is electrically connected to the ground terminal; the first, second, fifth, and sixth ends of the protection chip U2 are electrically connected to the ground terminal; and the fourth end of the protection chip U2 is electrically connected to the trigger circuit 20 and the main control circuit 10.
[0035] refer to Figure 2 and Figure 3 In one embodiment of the present invention, the disinfection device further includes a prompting circuit 60, the input terminal of the prompting circuit 60 being electrically connected to the main control circuit 10, and the power supply terminal of the prompting circuit 60 being electrically connected to the output terminal of the protection circuit 50; the prompting circuit 60 is used to output a prompting signal when it receives a prompting control signal output by the main control circuit 10.
[0036] In this embodiment, the prompting circuit 60 can be implemented using a voice prompting circuit 60 or a diode prompting circuit 60. In this embodiment, the prompting circuit 60 is implemented using a diode prompting circuit 60. By electrically connecting the input terminal of the prompting circuit 60 to the main control circuit 10 and the power supply terminal of the prompting circuit 60 to the output terminal of the protection circuit 50, a corresponding prompting signal is output when a prompting control signal is received from the main control circuit 10. Furthermore, the prompting control signal needs to be output when the main control circuit 10 receives a trigger signal, so that the user can confirm that the electric toothbrush is accurately docked with the disinfection device, and the disinfection device will disinfect the brush head of the electric toothbrush.
[0037] refer to Figure 2 and Figure 3 In one embodiment of the present invention, the disinfection device further includes a second switch circuit 70, which is connected in series between the output terminal of the trigger circuit 20 and the first terminal of the first switch circuit 40; the second switch circuit 70 is used to open or close the path between the output terminal of the trigger circuit 20 and the first terminal of the first switch circuit 40 when triggered.
[0038] In this embodiment, the second switch circuit 70 can be implemented by combining a corresponding physical trigger component with the switch circuit, so that the user can control the working state of the UV lamp in the disinfection component by triggering the physical trigger component. Therefore, the second switch circuit 70 is connected in series between the output terminal of the trigger circuit 20 and the first terminal of the first switch circuit 40, thereby realizing the control of the path between the power supply terminal and the input terminal of the drive circuit 30 by manual triggering.
[0039] refer to Figure 2 and Figure 3 In one embodiment of the present invention, the disinfection device further includes a wireless charging circuit 80, the controlled end of the wireless charging circuit 80 is electrically connected to the main control circuit 10, the first end of the wireless charging circuit 80 is electrically connected to the power supply end, and the second end of the wireless charging circuit 80 is electrically connected to the ground end. The main control circuit 10 is also used to output a wireless charging control signal to the wireless charging circuit 80 when the trigger signal is received, so that the wireless charging circuit 80 charges the electric toothbrush.
[0040] In this embodiment, the disinfection device also includes a wireless charging circuit 80, thereby enabling wireless charging of the electric toothbrush while it is being disinfected. It should be noted that for the disinfection device to disinfect the brush head of the electric toothbrush, the brush head needs to be inserted into the receiving cavity of the disinfection device. Therefore, the wireless charging receiver of the electric toothbrush is located on the side closer to the brush head.
[0041] This utility model also proposes an electric toothbrush system, which includes an electric toothbrush and a disinfection device as described in any of the above claims; wherein the wireless charging receiver of the electric toothbrush is disposed on the side near the brush head. It is worth noting that since this utility model's electric toothbrush system is based on the aforementioned disinfection device, the embodiments of this utility model's electric toothbrush system include all the technical solutions of all the embodiments of the aforementioned disinfection device, and the achieved technical effects are completely the same, and will not be repeated here.
[0042] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A disinfection device for use in electric toothbrushes, characterized in that, The disinfection device includes a disinfection body, which has a receiving cavity for accommodating the brush head of the electric toothbrush; the disinfection device also includes: Power supply end; Ultraviolet lamp tube; Main control circuit; A trigger circuit, wherein the input terminal of the trigger circuit is electrically connected to the power supply terminal, and the output terminal of the trigger circuit is electrically connected to the main control circuit; the trigger circuit is used to trigger when the brush head is contained in the receiving cavity, and output a trigger signal. A driving circuit, the output of which is electrically connected to the ultraviolet lamp; the driving circuit is used to convert the input DC voltage into AC voltage to drive the ultraviolet lamp. A first switching circuit is connected in series between the output terminal of the trigger circuit and the input terminal of the drive circuit, and the controlled terminal of the first switching circuit is electrically connected to the main control circuit. The main control circuit is used to receive the trigger signal and output a first switch control signal to the first switch circuit, so that the first switch circuit can connect the output terminal of the trigger circuit and the input terminal of the drive circuit.
2. The disinfection device as described in claim 1, characterized in that, The trigger circuit includes a Hall switch circuit, which includes a Hall switch transistor, a first capacitor, a second capacitor, and a first resistor. The first end of the Hall switch is electrically connected to the power supply terminal, the first end of the first capacitor, the first end of the first resistor, and the first end of the first switch circuit. The second end of the Hall switch is electrically connected to the second end of the first capacitor, the ground terminal, and the second end of the second capacitor. The third end of the Hall switch is electrically connected to the second end of the first resistor, the first end of the second capacitor, and the main control circuit.
3. The disinfection device as described in claim 1, characterized in that, The driving circuit includes a first switching transistor, a second switching transistor, a third capacitor, a fourth capacitor, a fifth capacitor, a second resistor, a third resistor, a first inductor, and a transformer; the transformer includes a primary winding and a secondary winding, and the primary winding includes a first primary winding and a second primary winding. Wherein, the first end of the first inductor is electrically connected to the input end of the first switching circuit; the second end of the first inductor is electrically connected to the second end of the second primary winding, the first end of the second resistor, and the second end of the third resistor; the first end of the first primary winding is electrically connected to the second end of the second resistor and the controlled end of the first switching transistor; the second end of the first primary winding is electrically connected to the first end of the third resistor and the controlled end of the second switching transistor; the first end of the second primary winding is electrically connected to the first end of the first switching transistor and the first end of the third capacitor; the third end of the second primary winding is electrically connected to the first end of the second switching transistor and the second end of the third capacitor; the second end of the first switching transistor is electrically connected to the second end of the second switching transistor and the ground terminal; the first end of the secondary winding is electrically connected to the second end of the fourth capacitor and the second end of the fifth capacitor; the first end of the fourth capacitor is electrically connected to the first power supply terminal of the ultraviolet lamp; and the first end of the fifth capacitor is electrically connected to the second power supply terminal of the ultraviolet lamp.
4. The disinfection device as described in claim 1, characterized in that, The first switching circuit includes a second inductor, a third switching transistor, a fourth switching transistor, a fourth resistor, a fifth resistor, a sixth resistor, and a seventh resistor; Wherein, the first end of the second inductor is electrically connected to the first end of the third switch and the trigger circuit; the second end of the second inductor is electrically connected to the first end of the fourth switch; the controlled end of the third switch is electrically connected to the first end of the fourth resistor, and the second end of the third switch is electrically connected to the first end of the fifth resistor; the second end of the fourth resistor is electrically connected to the main control circuit; the second end of the fifth resistor is electrically connected to the drive circuit; the controlled end of the fourth switch is electrically connected to the second end of the sixth resistor and the first end of the seventh resistor, and the second end of the fourth switch is electrically connected to the second end of the seventh resistor and the ground terminal; the first end of the sixth resistor is electrically connected to the main control circuit.
5. The disinfection device as described in claim 1, characterized in that, The disinfection device further includes a protection circuit, the input terminal of which is electrically connected to the power supply terminal, and the output terminal of which is electrically connected to the input terminal of the trigger circuit; the protection circuit is used to limit the voltage input to the power supply terminal within a preset voltage range and output it.
6. The disinfection device as described in claim 5, characterized in that, The protection circuit includes a fuse, a TVS diode, a sixth capacitor, and a protection chip. Specifically, the first end of the fuse is electrically connected to the power supply terminal; the second end of the fuse is electrically connected to the cathode of the TVS diode, the first end of the sixth capacitor, and the third end of the protection chip; the anode of the TVS diode is electrically connected to the ground terminal; the second end of the sixth capacitor is electrically connected to the ground terminal; the first, second, fifth, and sixth ends of the protection chip are electrically connected to the ground terminal; and the fourth end of the protection chip is electrically connected to the trigger circuit and the main control circuit.
7. The disinfection device as described in claim 5, characterized in that, The disinfection device also includes a prompting circuit, the input terminal of which is electrically connected to the main control circuit, and the power supply terminal of which is electrically connected to the output terminal of the protection circuit; the prompting circuit is used to output a prompting signal when it receives a prompting control signal output by the main control circuit.
8. The disinfection device as described in claim 1, characterized in that, The disinfection device further includes a second switching circuit, which is connected in series between the output terminal of the trigger circuit and the first terminal of the first switching circuit; the second switching circuit is used to turn on or off the path between the output terminal of the trigger circuit and the first terminal of the first switching circuit when triggered.
9. The disinfection device as described in claim 1, characterized in that, The disinfection device also includes a wireless charging circuit, wherein the controlled end of the wireless charging circuit is electrically connected to the main control circuit, the first end of the wireless charging circuit is electrically connected to the power supply end, and the second end of the wireless charging circuit is electrically connected to the ground end. The main control circuit is also used to output a wireless charging control signal to the wireless charging circuit when the trigger signal is received, so that the wireless charging circuit can charge the electric toothbrush.
10. An electric toothbrush system, characterized in that, The electric toothbrush system includes an electric toothbrush and a disinfection device as described in any one of claims 1 to 9; The wireless charging receiver of the electric toothbrush is located on the side close to the brush head.