A toothbrush

Abstract

The utility model discloses toothbrush technical field relates to toothbrush, the toothbrush includes the brush head piece and hand component, and the brush head piece and hand component are connected through titanium stick subassembly, the brush head piece includes the brush head end and the connecting handle that is connected with the brush head end, and the connecting handle inside is equipped with the insertion channel for titanium stick subassembly from the one end away from the brush head end inserts, and the connecting handle is close to the brush head end and is equipped with the slot, and the slot is communicated with the insertion channel, the hand component includes the casing, the hand touch conductor that is located the casing outer surface and the electric control assembly, and the hand touch conductor is connected with electric control assembly electricity, and the one end of titanium stick subassembly away from the brush head piece is placed in the casing and is connected with electric control assembly electricity, and when user holds the hand component and uses toothbrush, the closed micro-current loop is formed between the hand touch conductor, electric control assembly, titanium stick subassembly and human body. Through above -mentioned mode, the utility model discloses embodiment has solved the problem that the existing toothbrush can aggravate the discomfort of oral environment sensitive user when cleaning.

Description

Technical Field

[0001] This utility model relates to the field of toothbrush technology, specifically to a toothbrush. Background Technology

[0002] For users with sensitive oral environments, such as those suffering from gingivitis, periodontitis, oral ulcers, or undergoing orthodontic treatment, brushing their teeth often exacerbates pain, causes discomfort, or leads to bleeding, making daily oral hygiene a painful process. Current toothbrush products primarily rely on mechanical friction for cleaning; whether manual or electric, they struggle to fundamentally address the irritation to sensitive tissues. While some high-end electric toothbrushes offer multiple vibration modes, their essence remains mechanical friction cleaning, failing to alleviate the pain caused by existing oral inflammation or ulcers. Summary of the Invention

[0003] In view of the above problems, this utility model provides a toothbrush to solve the problem that existing toothbrushes exacerbate discomfort for users with sensitive oral environments during cleaning.

[0004] According to one aspect of the present invention, a toothbrush is provided, the toothbrush including a brush head and a handle, the brush head and the handle being connected by a titanium rod assembly; The brush head assembly includes a brush head end and a connecting handle connected to the brush head end; the connecting handle has an insertion channel inside for the titanium rod assembly to be inserted from the end away from the brush head end, and the connecting handle has a slot near the brush head end, the slot communicating with the insertion channel; The handle includes a housing, a hand-contact conductor located on the outer surface of the housing, and an electronic control component. The hand-contact conductor is electrically connected to the electronic control component. The end of the titanium rod assembly away from the brush head is placed inside the housing and electrically connected to the electronic control component. When the user holds the handle and uses the toothbrush, a closed microcurrent circuit is formed between the hand-contact conductor, the electronic control component, the titanium rod assembly, and the human body.

[0005] In one alternative embodiment, the handle assembly further includes a servo motor, the output shaft of which is fixedly connected to the titanium rod assembly. The electronic control assembly is electrically connected to the servo motor and is used to control the servo motor to drive the output shaft to rotate left and right or vibrate axially, thereby driving the brush head assembly to rotate left and right or vibrate axially synchronously through the titanium rod assembly.

[0006] In one alternative embodiment, the titanium rod assembly includes an elongated titanium rod and a sleeve fitted over the titanium rod. The end of the titanium rod away from the brush head is inserted from the upper end of the sleeve and fixed inside the sleeve; The output shaft is inserted from the lower end of the sleeve and fixed inside the sleeve.

[0007] In one alternative embodiment, the electronic control assembly includes a PCB board, a first battery, and a second battery; The first battery is electrically connected to the PCB board to provide a microcurrent to the PCB board; the PCB board is electrically connected to the titanium rod assembly and the hand contact conductor respectively, so that a microcurrent loop is formed through the human body when the user holds the handle; The second battery is electrically connected to the PCB board, and the PCB board is electrically connected to the servo motor to control the servo motor to drive the output shaft to move.

[0008] In one alternative embodiment, the first battery is a solar cell; the handle also includes a transparent cover having a receiving cavity in which the first battery is located.

[0009] In one alternative embodiment, the titanium rod assembly further includes a connector having a connection channel through which the titanium rod passes and is fixedly connected to the connector, and the upper end of the sleeve is positioned in the connection channel and fixedly connected to the connector; the upper end of the connector is located at the top of the housing. The end of the connecting handle away from the brush head is provided with a U-shaped fitting groove, the opening of the fitting groove is facing the housing, and the upper end of the connecting seat is fitted into the fitting groove to fix the connection between the handle and the brush head.

[0010] In one alternative embodiment, the electronic control assembly further includes a brush component, which is electrically connected to the PCB board via a first wire. The brush component is disposed on a plurality of contact springs, which are circumferentially distributed around the outer side of the sleeve, and the contact springs are elastically contacted and connected to the sleeve.

[0011] In one alternative embodiment, a silicone element is provided between the brush assembly and the servo motor to isolate the brush assembly and the servo motor. The upper end of the silicone element is in contact with the bottom surface of the brush assembly, and the lower end of the silicone element is in contact with the upper end of the servo motor.

[0012] In one alternative embodiment, the outer side of the silicone component is provided with a connecting portion, and the connecting portion is provided with a downward-facing insertion interface. The upper end of the PCB board is embedded in the insertion interface and fixedly connected to the silicone component. The handle also includes a mounting bracket, and the PCB board is located between the mounting bracket and the hand contact conductor, and the PCB board is fixedly connected to the mounting bracket.

[0013] In one alternative embodiment, the handle further includes a sleeve and a waterproof ring; the waterproof ring is located at the top outlet of the housing and is fixedly connected to the housing, and the lower end of the connecting seat is embedded in the waterproof ring and fixedly connected to the waterproof ring. The upper end of the sleeve shaft is fixedly connected to the waterproof ring, and the lower end of the sleeve shaft is connected to the silicone component; the sleeve shaft is hollow inside, and the brush component is located inside the sleeve shaft.

[0014] In this embodiment of the invention, the brush head and handle are connected via a titanium rod assembly. The brush head has an internal insertion channel and a slot, while the handle has an internal electronic control component and an external hand-contact conductor. When the user holds the handle, the hand-contact conductor, electronic control component, titanium rod assembly, and human body together form a closed microcurrent circuit. This microcurrent can be conducted through the moist environment of the oral cavity to sensitive tissues such as the gums, gently stimulating local blood circulation, relieving inflammation and pain, and significantly improving the brushing comfort of users with sensitive oral environments (such as patients with gingivitis or oral ulcers). This fundamentally reduces the discomfort and damage caused by traditional mechanical friction cleaning, achieving the dual functions of cleaning and care.

[0015] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A perspective view of a toothbrush provided in an embodiment of the present invention is shown; Figure 2 A schematic diagram of the structure of a brush head component provided in an embodiment of this utility model is shown; Figure 3 A cross-sectional view of another brush head component provided in an embodiment of the present invention is shown; Figure 4 An exploded view of a toothbrush provided in an embodiment of the present invention is shown; Figure 5 A cross-sectional view of the handle component provided in an embodiment of the present invention is shown; Figure 6 A schematic diagram of the structure of the titanium rod assembly provided in an embodiment of the present invention is shown; Figure 7An exploded view of the handle component provided in an embodiment of the present invention is shown; Figure 8 It shows Figure 5 Enlarged view of point A in the middle; Figure 9 It shows Figure 5 Enlarged view of point B in the middle; Figure 10 It shows Figure 5 Enlarged diagram of point C in the middle.

[0017] The reference numerals in the detailed embodiments are as follows: 1. Brush head component; 11. Brush head end; 12. Connecting handle; 13. Insertion channel; 14. Groove; 15. Fitting groove; 16. Brush bristles; 2. Handle component; 21. Housing; 22. Hand contact conductor; 221. Contact post; 231. PCB board; 232. First battery; 233. Second battery; 234. Brush component; 2341. Contact spring; 2342. Base; 235. First wire; 236. Second wire; 24. Servo motor; 241. Output shaft; 25. Transparent cover; 251. Receiving cavity; 26. Silicone component; 261. Connecting part; 262. Insertion interface; 27. Mounting bracket; 28. Sleeve shaft; 29. ​​Waterproof ring; 3. Titanium rod assembly; 31. Titanium rod; 32. Sleeve; 33. Connecting seat; 331. Connecting channel; 4. Charging component. Detailed Implementation

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0019] Please see Figures 1-9 , Figure 1 A perspective view of an embodiment of a toothbrush provided by this utility model is shown. The toothbrush includes: a brush head 1 and a handle 2, which are connected by a titanium rod assembly 3; as shown Figure 2 , Figure 3 As shown, the brush head component 1 includes a brush head end 11 and a connecting handle 12 connected to the brush head end 11; the connecting handle 12 has an insertion channel 13 for the titanium rod assembly 3 to be inserted from the end away from the brush head end 11, and the connecting handle 12 has a slot 14 near the brush head end 11, the slot 14 communicating with the insertion channel 13; as shown Figure 4As shown, the handle 2 includes a housing 21, a hand contact conductor 22 located on the outer surface of the housing 21, and an electronic control component. The hand contact conductor 22 is electrically connected to the electronic control component. The end of the titanium rod assembly 3 away from the brush head 1 is placed inside the housing 21 and is electrically connected to the electronic control component. When the user holds the handle 2 and uses the toothbrush, a closed microcurrent circuit is formed between the hand contact conductor 22, the electronic control component, the titanium rod assembly 3, and the human body.

[0020] The slot 14 includes elongated shapes (such as...) Figure 2 (as shown) or round hole-shaped (as shown) Figure 4 As shown), when the groove 14 is elongated, its length is along the length of the connecting handle 12, and one end of the groove 14 extends close to the brush head end 11, which is used to extend into the oral cavity for cleaning. When the groove 14 is round, it is positioned close to the brush head end 11.

[0021] The brush head end 11 and the connecting handle 12 are integrally formed to form the brush head component 1. The brush head end 11 is provided with a brush 16 for cleaning the oral cavity. The connecting handle 12 has an insertion channel 13 along its axial direction inside, for inserting the titanium rod assembly 3 into the insertion channel 13 to fix the brush head component 1 and the handle component 2. The connecting handle 12 has a slot 14 near the brush head end 11, which communicates with the insertion channel 13, thus exposing part of the titanium rod assembly 3 inserted into the insertion channel 13.

[0022] A groove matching the hand-touch conductor 22 is provided on the outer surface of the housing 21, and the hand-touch conductor 22 is embedded in the groove in the form of a curved sheet.

[0023] The hand-contact conductor 22 is made of stainless steel conductive sheet. The side of the hand-contact conductor 22 exposed to the outside is for the user's hand to hold, and the opposite side is provided with a metal contact post 221, such as... Figure 5 , Figure 7 and Figure 10 As shown, one end of the contact post 221 is fixedly connected to the hand-contact conductor 22, and the other end of the contact post 221 passes through and is electrically connected to the electronic control component inside the housing 21. The end of the titanium rod assembly 3 away from the brush head 1 is placed inside the housing 21 and is electrically connected to the electronic control component. When the user holds the handle 2 and uses the toothbrush, the moisture in the user's mouth comes into contact with the part of the titanium rod assembly 3 exposed in the slot 14, and at the same time, the user's hand comes into contact with the hand-contact conductor 22, thereby forming a closed microcurrent circuit through the human body. The circuit path is: from the electronic control component to the titanium rod assembly 3, then to the human mouth, then to the human hand, and finally back to the electronic control component through the hand-contact conductor 22. During this process, the microcurrent can stimulate the local tissues of the oral cavity, promote blood circulation, relieve the pain caused by gingival inflammation or ulcers, and improve the comfort of brushing teeth.

[0024] In one implementation, the toothbrush is a manual toothbrush, and the electronic control component is only electrically connected to the titanium rod component 3 and the hand-touch conductor 22.

[0025] In another implementation, such as Figure 4 and Figure 5 As shown, the toothbrush is an electric toothbrush. The handle 2 also includes a servo motor 24. The output shaft 241 of the servo motor 24 is fixedly connected to the titanium rod assembly 3. The electronic control component is electrically connected to the servo motor 24 and is used to control the servo motor 24 to drive the output shaft 241 to rotate left and right or vibrate axially, thereby driving the brush head 1 to rotate left and right or vibrate axially synchronously through the titanium rod assembly 3.

[0026] The output shaft 241 drives the titanium rod assembly 3 to move. The moving titanium rod assembly 3 is fixedly connected to the brush head 1 through the insertion channel 13, thereby driving the brush head 1 to move. Under the control of the electronic control component, the servo motor 24 can drive the output shaft 241 to perform left-right reciprocating rotation or axial vibration at different frequencies and amplitudes according to preset cleaning modes. For example, in cleaning mode one, the servo motor 24 can drive the output shaft 241 to perform high-frequency left-right rotation to achieve rapid cleaning of the tooth surface; in cleaning mode two, the servo motor 24 can drive the output shaft 241 to perform low-frequency axial vibration to achieve a gentle massage of the gums and reduce irritation. Through this multi-mode cleaning method, the electric toothbrush can meet the needs of different users for cleaning intensity and comfort.

[0027] This embodiment achieves electric control of the toothbrush components. It not only uses the titanium rod assembly 3 to deliver a microcurrent to the human body, thus relieving pain, but also utilizes the precise control of the servo motor 24 to realize multiple cleaning modes. The servo motor 24 can drive the output shaft 241 to rotate left and right or vibrate axially at different frequencies and amplitudes according to the preset cleaning mode, thereby causing the titanium rod assembly 3 and the brush head 1 to move synchronously. This not only enhances the toothbrush's functional versatility, meeting the user's dual needs for oral cleaning and care, but also improves the product's portability and aesthetics through a compact structural design, reducing the number and size of mechanical parts, lowering production costs, and simultaneously improving the product's reliability and durability.

[0028] Furthermore, such as Figure 4 , Figure 5 and Figure 6 The titanium rod assembly 3 shown includes a long strip-shaped titanium rod 31 and a sleeve 32 sleeved outside the titanium rod 31; the end of the titanium rod 31 away from the brush head 1 is inserted into and fixed inside the sleeve 32 from the upper end; the output shaft 241 is inserted into and fixed inside the sleeve 32 from the lower end.

[0029] The long, strip-shaped titanium rod 31 is inserted into and fixed inside the sleeve 32 from the upper end of the sleeve 32 at the end away from the brush head 1. The output shaft 241 is inserted into and fixed inside the sleeve 32 from the lower end of the sleeve 32, so that the titanium rod assembly 3 and the output shaft 241 of the servo motor 24 can be closely matched to ensure effective power transmission.

[0030] The titanium rod 31 is made of titanium metal material with good conductivity and biocompatibility. Its length is matched with the transmission distance between the brush head 1 and the handle 2. The titanium rod 31 can extend into the slot 14 and the position where the insertion channel 13 is connected.

[0031] The sleeve 32 is made of a conductive and wear-resistant material. After the titanium rod 31 is inserted from the upper end of the sleeve 32, it can be fixed by means of threads, snaps, or adhesives. The output shaft 241 of the servo motor 24 is inserted from the lower end of the sleeve 32 and fixed to the sleeve 32 by means of tight fit, threads, or welding. When the servo motor 24 drives the output shaft 241 to move, the movement of the output shaft 241 is transmitted to the sleeve 32, which in turn drives the sleeve 32 to move. The moving sleeve 32 transmits power to the titanium rod 31, which in turn transmits power to the brush head 1. This simplifies the internal spatial layout of the handle 2, reduces the complexity of the parts structure and the assembly difficulty, and improves production efficiency and product reliability.

[0032] Furthermore, such as Figure 4 , Figure 5 and Figure 7 As shown, the electronic control component includes a PCB board 231, a first battery 232, and a second battery 233. The first battery 232 is electrically connected to the PCB board 231 to provide a microcurrent to the PCB board 231. The PCB board 231 is electrically connected to the titanium rod assembly 3 and the hand contact conductor 22 respectively, so that a microcurrent loop is formed through the human body when the user holds the handle 2. The second battery 233 is electrically connected to the PCB board 231, and the PCB board 231 is electrically connected to the servo motor 24 to control the servo motor 24 to drive the output shaft 241 to move.

[0033] Specifically, the first battery 232 is electrically connected to the PCB board 231, providing the PCB board 231 with low voltage and low current power required to generate microcurrent. The hand contact conductor 22 is electrically connected to the PCB board 231 through the contact post 221. The PCB board 231 is electrically connected to the titanium rod assembly 3. When the user holds the handle 2, a complete microcurrent closed loop is formed through the user's body.

[0034] In one implementation, the first battery 232 can be a small-capacity, high-safety solid-state battery or a button battery. The output voltage of the first battery 232 is precisely modulated and controlled by a dedicated microcurrent generating circuit on the PCB board 231 to generate a microampere-level current that is safe for the human body and has a nursing effect. This microcurrent signal is transmitted to the hand-touch conductor 22 and the titanium rod assembly 3 through wiring on the PCB board 231.

[0035] Another implementation method, such as Figure 4 , Figure 5 and Figure 7 As shown, the first battery 232 is a solar cell; the handle 2 also includes a transparent cover 25, which has a receiving cavity 251, and the first battery 232 is located in the receiving cavity 251. The transparent cover 25 is made of a high light transmittance and wear-resistant material, such as polycarbonate (PC) or tempered glass. The solar cell is a flexible or rigid silicon-based solar cell. The electrodes of the first battery 232 are electrically connected to the PCB board 231 inside the handle 2 through a second wire 236.

[0036] When the first battery 232 is a solar cell, the electrical energy generated by the first battery 232 is not directly used to drive the load. Instead, it is first delivered to a micro energy storage unit on the PCB board 231. This micro energy storage unit is either a supercapacitor or a small-capacity rechargeable button battery. The power management circuit on the PCB board 231 stores and manages the collected electrical energy. When the user uses the toothbrush, the PCB board 231 uses the electrical energy stored in the energy storage unit to power the micro-current generating circuit. This allows the user to simply place the toothbrush in a light-filled environment (such as a windowsill or bathroom sink) to allow the solar cell to be illuminated through the transparent cover 25, thereby achieving the collection and storage of light energy and providing power for the micro-current function.

[0037] The transparent cover 25 is connected to the bottom end of the housing 21; the opening of the receiving cavity 251 faces the bottom end of the housing 21, and the transparent cover 25 is connected to the bottom end of the housing 21. The transparent cover 25 is fixedly connected to the bottom end of the housing 21 by sealing adhesive or snap-fit. The transparent cover 25 is cylindrical, and its circumferential radius is the same as the radius of the bottom end of the housing 21, so that the handle 2 has a regular shape in appearance. After the transparent cover 25 is fixedly connected to the bottom end of the housing 21, the receiving cavity 251 and the inside of the housing 21 are connected, and the housing 21 can seal the receiving cavity 251 to prevent moisture, toothpaste foam, etc. from entering the receiving cavity 251 and the inside of the housing 21 and damaging the solar cells and other electronic components inside the housing 21.

[0038] like Figure 5As shown, a charging component 4 is provided inside the mounting cavity. The charging component 4 is electrically connected to the second battery 233. A charging port is provided at the end of the transparent cover 25 away from the housing 21. An external power source is electrically connected to the charging component 4 through this charging port to supply power to the second battery 233, allowing the second battery 233 to store electrical energy. The second battery 233 is electrically connected to the PCB board 231. The PCB board 231 is electrically connected to the servo motor 24 based on a built-in control program, controlling and driving the servo motor 24 to operate, thereby driving the output shaft 241 to move to achieve the predetermined cleaning motion.

[0039] The first battery 232 and the second battery 233, which powers the motor, are physically isolated, completely avoiding interference from the high current operation of the motor on the stability of the micro current, ensuring the accuracy and stability of the micro current output, and thus guaranteeing the nursing effect.

[0040] Furthermore, such as Figure 5 and Figure 6 As shown, the titanium rod assembly 3 also includes a connecting seat 33, which has a connecting channel 331. The titanium rod 31 passes through the connecting channel 331 and is connected to the connecting seat 33. The upper end of the sleeve 32 is placed in the connecting channel 331 and fixedly connected to the connecting seat 33. The upper end of the connecting seat 33 is located at the top of the housing 21. Figure 2 As shown, the end of the connecting handle 12 away from the brush head 1 is provided with a U-shaped fitting groove 15. The opening of the fitting groove 15 faces the housing 21. The upper end of the connecting seat 33 is fitted into the fitting groove 15 to fix the connection between the handle 2 and the brush head 1.

[0041] The connector 33 is made of insulating plastic. Along the length of the handle 2, a connecting channel 331 connects the upper and lower ends of the connector 33. A long, strip-shaped titanium rod 31 passes through the connecting channel 331, and the upper end of the sleeve 32 is positioned in the connecting channel 331 and connected to the connector 33. When the output shaft 241 transmits power to the sleeve 32, the power is transmitted through the sleeve 32 to the connector 33, causing the connector 33 to move. The connecting handle 12 is fixedly connected to the connector 33 through the fitting groove 15. The moving connector 33 drives the brush head 1 to move, causing the brush bristles 16 at the brush head end 11 to clean the oral cavity.

[0042] The opening of the U-shaped fitting groove 15 ensures that when the brush head 1 and the handle 2 are connected, the brush head 1 can be quickly and accurately fitted into the handle 2, greatly improving the convenience of brush head replacement and user experience. At the same time, the mating surface between the U-shaped fitting groove 15 and the upper surface of the connecting seat 33 effectively prevents moisture, toothpaste foam and other substances in the oral environment from entering the interior of the handle 2, protecting the internal precision electronic control components and motor, and significantly improving the waterproof rating and service life of the product.

[0043] In one implementation, the titanium rod 31 is fastened to the sleeve 32, and the power of the output shaft 241 is transmitted to the titanium rod 31 and the connecting seat 33 through the sleeve 32, and then transmitted to the brush head 1 through the titanium rod 31 and the connecting seat 33.

[0044] In another implementation, the titanium rod 31 is in contact with the sleeve 32. The microcurrent at the upper end of the PCB board 231 flows to the titanium rod 31 through the sleeve 32. When the output shaft 241 transmits power to the sleeve 32, the sleeve 32 transmits power to the connector 33. The titanium rod 31 and the connector 33 are connected through the sleeve 32. When the connector 33 drives the brush head 1 to move, the titanium rod 31 remains stationary.

[0045] like Figure 7 and Figure 8 As shown, the electronic control assembly also includes a brush 234. The brush 234 is electrically connected to the PCB board 231 through a first wire 235. The brush 234 is disposed on a plurality of contact springs 2341. The plurality of contact springs 2341 are circumferentially distributed around the outside of the sleeve 32, and the contact springs 2341 are elastically abutting against the sleeve 32.

[0046] The brush assembly 234 includes a ring-shaped base 2342, around which multiple contact springs 2341 are arranged. The base 2342 is electrically connected to the PCB board 231 via a guide. The contact springs 2341 are made of a metal material with good conductivity and elastic recovery. The contact springs 2341 are arched or spring-shaped. One end of the sleeve 32 connected to the output shaft 241 is placed in the brush assembly 234. The contact springs 2341 and the outer wall of the sleeve 32 are pressed together. The arched or spring-shaped contact springs 2341 apply a continuous and stable elastic contact pressure to the sleeve 32 to ensure that no matter how the sleeve 32 moves with the output shaft 241, one or more contact springs 2341 can always maintain reliable electrical contact with the sleeve 32, thereby continuously conducting the micro-current generated by the PCB board 231 to the rotating sleeve 32.

[0047] like Figure 5 , Figure 7 and Figure 8As shown, a silicone component 26 is provided between the brush component 234 and the servo motor 24 to isolate them. The upper end of the silicone component 26 abuts against the bottom surface of the brush component 234, and the lower end of the silicone component 26 abuts against the upper end of the servo motor 24. When the upper surface of the silicone component 26 is installed in place by the brush component 234, it is compressed by the bottom surface of the brush component 234; the lower surface of the silicone component 26 also abuts tightly against the upper surface of the housing of the servo motor 24. Through the elastic deformation of the silicone component 26 itself, it plays a supporting, buffering, and isolating role between the brush component 234 and the servo motor 24; at the same time, it can effectively absorb and attenuate the vibration energy transmitted from the servo motor 24, preventing problems such as unstable contact between the brush component 234 and the sleeve 32, electrical sparks, or abnormal noise that may be caused by vibration, while improving the user's grip comfort when holding the handle.

[0048] like Figure 5 , Figure 7 and Figure 9 As shown, the outer side of the silicone part 26 is provided with a connecting part 261, and the connecting part 261 is provided with a downward-facing insertion interface 262. The upper end of the PCB board 231 is embedded in the insertion interface 262 and fixedly connected to the silicone part 26. The handle part 2 also includes a mounting bracket 27. The PCB board 231 is located between the mounting bracket 27 and the hand contact conductor 22 and is fixedly connected to the mounting bracket 27.

[0049] By embedding the upper end of the PCB board 231 into the interface 262 of the silicone part 26, the high-frequency vibration transmitted from the servo motor 24 through the mounting bracket 27, as well as the impact and vibration transmitted from the outside of the handle part 2, can be effectively isolated. This greatly reduces the adverse effects of vibration on the reliability of the solder joints of precision electronic components (such as MCU and micro current generating chip) on the PCB board 231, prevents solder joint failures caused by fatigue fracture, and improves the long-term reliability of the electronic system.

[0050] The PCB board 231 is fixed by the upper silicone component 26 and the lower mounting bracket 27. The silicone component 26 provides elastic support and vibration isolation for the PCB board 231, while the mounting bracket 27 provides stable positioning and support for the PCB board 231. This ensures that the PCB board 231 will not shake or shift during normal use, ensuring the reliability of internal connections, while also releasing vibration stress through the elastic unit and optimizing the overall mechanical structure performance.

[0051] like Figure 5 , Figure 7 and Figure 8As shown, the handle component 2 also includes a sleeve shaft 28 and a waterproof ring 29; the waterproof ring 29 is located at the top outlet of the housing 21 and is fixedly connected to the housing 21, and the lower end of the connecting seat 33 is embedded in the waterproof ring 29 and fixedly connected to the waterproof ring 29; the upper end of the sleeve shaft 28 is fixedly connected to the waterproof ring 29, and the lower end of the sleeve shaft 28 is connected to the silicone component 26; the sleeve shaft 28 is hollow inside, and the brush component 234 is located inside the sleeve shaft 28.

[0052] The sealing between the waterproof ring 29 and the top of the housing 21, as well as the sealing between the waterproof ring 29 and the connecting seat 33, completely isolates the electrical control components inside the housing 21 from the moisture at the top of the brush head 1.

[0053] The sleeve 28 serves as a protective housing, further enclosing the brush component 234 completely within its dry inner cavity. This almost completely eliminates the risk of liquid seeping into the housing 21 and damaging the electronic control components, greatly improving the reliability and lifespan of the product in humid environments.

[0054] The upper end of the sleeve 28 is fixed to the waterproof ring 29, and the lower end is connected to the silicone part 26. The silicone part 26 then contacts the servo motor 24 and other components below, so that the force and vibration on the connecting seat 33 and the brush head 1 are transmitted and buffered downward through the sleeve 28-silicone part 26 path, rather than acting directly on the fragile components such as the brush part 234 and the PCB board 231, thus protecting the electronic control components from mechanical damage.

[0055] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by those skilled in the art to which the embodiments of this utility model pertain.

[0056] In the description of this embodiment of the present invention, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0057] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0058] In the description of this embodiment of the invention, unless otherwise explicitly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0059] In the description of this embodiment of the invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A toothbrush, characterized in that, The toothbrush includes a brush head and a handle, which are connected by a titanium rod assembly. The brush head assembly includes a brush head end and a connecting handle connected to the brush head end; the connecting handle has an insertion channel inside for the titanium rod assembly to be inserted from the end away from the brush head end, and the connecting handle has a slot near the brush head end, the slot communicating with the insertion channel; The handle includes a housing, a hand-contact conductor located on the outer surface of the housing, and an electronic control component. The hand-contact conductor is electrically connected to the electronic control component. The end of the titanium rod assembly away from the brush head is placed inside the housing and electrically connected to the electronic control component. When the user holds the handle and uses the toothbrush, a closed microcurrent circuit is formed between the hand-contact conductor, the electronic control component, the titanium rod assembly, and the human body.

2. The toothbrush according to claim 1, characterized in that, The handle also includes a servo motor, the output shaft of which is fixedly connected to the titanium rod assembly. The electronic control assembly is electrically connected to the servo motor and is used to control the servo motor to drive the output shaft to rotate left and right or vibrate axially, thereby driving the brush head to rotate left and right or vibrate axially synchronously through the titanium rod assembly.

3. The toothbrush according to claim 2, characterized in that, The titanium rod assembly includes a long strip-shaped titanium rod and a sleeve fitted over the titanium rod. The end of the titanium rod away from the brush head is inserted from the upper end of the sleeve and fixed inside the sleeve; The output shaft is inserted from the lower end of the sleeve and fixed inside the sleeve.

4. The toothbrush according to claim 3, characterized in that, The electronic control assembly includes a PCB board, a first battery, and a second battery; The first battery is electrically connected to the PCB board to provide a microcurrent to the PCB board; The PCB board is electrically connected to the titanium rod assembly and the hand-touch conductor respectively, so that a micro-current loop is formed through the human body when the user holds the handle; The second battery is electrically connected to the PCB board, and the PCB board is electrically connected to the servo motor to control the servo motor to drive the output shaft to move.

5. The toothbrush according to claim 4, characterized in that, The first battery is a solar cell; the handle also includes a transparent cover, which has a receiving cavity, and the first battery is located in the receiving cavity.

6. The toothbrush according to claim 4, characterized in that, The titanium rod assembly further includes a connector, which has a connection channel through which the titanium rod passes and is fixedly connected to the connector. The upper end of the sleeve is placed in the connection channel and fixedly connected to the connector. The upper end of the connector is located at the top of the housing. The end of the connecting handle away from the brush head is provided with a U-shaped fitting groove, the opening of the fitting groove is facing the housing, and the upper end of the connecting seat is fitted into the fitting groove to fix the connection between the handle and the brush head.

7. The toothbrush according to claim 6, characterized in that, The electronic control component also includes a brush component, which is electrically connected to the PCB board via a first wire. The brush component is disposed on a plurality of contact springs, which are circumferentially distributed around the outer side of the sleeve, and the contact springs are elastically contacted and connected to the sleeve.

8. The toothbrush according to claim 7, characterized in that, A silicone component is provided between the brush assembly and the servo motor to isolate the brush assembly and the servo motor. The upper end of the silicone component is in contact with the bottom surface of the brush assembly, and the lower end of the silicone component is in contact with the upper end of the servo motor.

9. The toothbrush according to claim 8, characterized in that, The silicone component has a connecting part on its outer side, and a downward-facing insertion interface is provided on the connecting part. The upper end of the PCB board is embedded in the insertion interface and fixedly connected to the silicone component. The handle also includes a mounting bracket, and the PCB board is located between the mounting bracket and the hand contact conductor, and the PCB board is fixedly connected to the mounting bracket.

10. The toothbrush according to claim 8, characterized in that, The handle also includes a sleeve and a waterproof ring; the waterproof ring is located at the top outlet of the housing and is fixedly connected to the housing, and the lower end of the connecting seat is embedded in the waterproof ring and fixedly connected to the waterproof ring; The upper end of the sleeve shaft is fixedly connected to the waterproof ring, and the lower end of the sleeve shaft is connected to the silicone component; the sleeve shaft is hollow inside, and the brush component is located inside the sleeve shaft.

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