An electric toothbrush that combines spraying and brushing

Abstract

This invention provides an electric toothbrush with integrated spraying and brushing, belonging to the field of oral hygiene technology. It includes a handle assembly, a toothbrush head component, an air-liquid mixing jet assembly, and a toothbrush head closure clip. The toothbrush head component is elastically and torsionally screwed to the handle shell. A component for fixing a water bladder shell and an air bladder shell is installed inside the toothbrush head retraction position hole. The deformable surface of the water bladder is connected to the inner wall of the water bladder shell, and the inner wall of the air bladder shell is connected to the deformable surface of the air bladder. The air bladder can provide positive or negative pressure to the water bladder in one direction, and the output ends of both the air bladder and the water bladder are connected to the inlet of the brush head cavity. After the air bladder is inflated and the water bladder is filled with water, a spraying and brushing operation can be formed. After use, the air bladder provides negative pressure to the water bladder, causing both the deformable surfaces of the water bladder and the air bladder to retract into place. The internal space of the water bladder shell and the air bladder shell is sufficient to accommodate the folded toothbrush head component. With the use of the toothbrush head closure clip, the toothbrush head component can be safely and reliably stored.

Description

Technical Field

[0001] This invention relates to the field of oral hygiene technology, and in particular to an electric toothbrush that integrates spraying and brushing. Background Technology

[0002] With the improvement of people's living standards, electric toothbrushes have become an essential household cleaning product. Existing electric toothbrushes are mainly divided into rotary vibration type and sonic vibration type. While they can effectively clean the surface of teeth, they are often insufficient to thoroughly remove plaque and food debris deep between teeth through physical contact with the bristles alone. Therefore, some electric toothbrushes that combine water jet cleaning and brushing have appeared on the market. These toothbrushes use microbubble water flow to assist in cleaning, improving the cleaning effect.

[0003] However, existing integrated spray and brush electric toothbrushes still have the following significant technical problems in practical use: First, the internal fluid chamber has low structural integration and poor sealing reliability. Traditional electric toothbrushes, if they need to integrate a water spray function, usually require an additional independent soft water bag or rigid water tank inside the body. This often requires complex snap-fit ​​or adhesive processes to fix it inside the body, making the assembly process cumbersome. Furthermore, after long-term use, the connections are prone to loosening, leading to liquid leakage or gas-liquid cross-contamination, affecting the motor's lifespan. Second, as electric toothbrushes evolve towards multi-functional integrated spray and brush functions, the internal space layout of the product faces challenges. On the one hand, to meet the needs of portability and hygiene protection, the body usually needs to be designed with a folding or storage structure for the brush head. On the other hand, the spray and brush function requires a corresponding fluid storage chamber inside the body. Within the limited body size, the occupancy of the fluid chamber and the storage space for the brush head often interfere with each other. If the fluid chamber volume is large, it can easily lead to insufficient storage space for the brush head, thus affecting the overall portability of the product. Conversely, if the fluid chamber is compressed to reduce volume, the amount of water for a single brushing session will be insufficient to meet the full brushing needs. Summary of the Invention

[0004] The purpose of this invention is to provide an electric toothbrush that integrates spraying and brushing, which can ensure sufficient space for fluid during use and also free up space for the brush head to be folded and stored.

[0005] The objective of this invention is achieved through the following technical solution: an electric toothbrush that integrates spraying and brushing, comprising a handle assembly, a toothbrush head component, an air-liquid mixing spray assembly, and a toothbrush head closing mechanism; the handle assembly includes a handle shell and a miniature diaphragm pump, the toothbrush head component includes a brush head, the air-liquid mixing spray assembly includes a water bladder shell, an air bladder shell, a bubble separator, and an anti-backflow valve, and the toothbrush head closing mechanism includes a release button; The main body at the head end of the handle housing has a toothbrush head recycling positioning hole. A miniature diaphragm pump is installed inside the handle housing. The end shaft of the brush head is elastically and torsionally connected to the head end of the toothbrush head recycling positioning hole. The structure formed by the water bladder shell and the air bladder shell is fixedly connected to the toothbrush head recycling positioning hole. The inner wall of the water bladder shell is connected to the water bladder deformation surface, and the inner wall of the air bladder shell is connected to the air bladder deformation surface. The water bladder shell and the water bladder deformation surface form a water bladder, and the air bladder shell and the air bladder deformation surface form an air bladder. The miniature diaphragm pump can provide positive or negative pressure unidirectionally into the air bladder, and the air bladder can provide positive or negative pressure unidirectionally into the water bladder. The outlets of both the water bladder and the air bladder are connected to the inlet of the brush head's inner cavity. The bubble divider and the anti-backflow valve are both installed in the inner cavity of the brush head. The anti-backflow valve is located downstream of the bubble divider. Both sides of the outer wall of the brush head are fixed with retaining seats. Both sides of the head end of the handle housing have spring-loaded sliding inserts that spring inward. The release button is slidably inserted into one side of the outer wall of the handle housing. When the release button is pressed, both sets of spring-loaded inserts can be released simultaneously.

[0006] The technical solution of this invention is used as follows: When both the water bladder deformation surface and the air bladder deformation surface are in a contracted state, the water bladder deformation surface is flat against the water bladder shell, and the air bladder deformation surface is flat against the air bladder shell. By rotating the brush head to overcome the elastic torque at its rotating end, the brush head can be rotated into the inner cavity formed by the water bladder shell and the air bladder shell, realizing the folding and retraction of the brush head in the unused state. When the brush head is retracted into place, the head end of the spring column on the same side is elastically engaged in the card hole of the card seat, forming a safe and reliable storage action for the brush head, which is convenient to carry. By pressing the release button, the two sets of springs retract synchronously, which releases the engagement between the spring head and the card slot. Under the elastic torque of the brush head's own shaft, the brush head freely unfolds to a position that is close to the toothbrush head retraction positioning hole. When not in use, both the water bladder deformation surface and the air bladder deformation surface are in the contracted position. When using it for brushing teeth, first inject an appropriate amount of water into the water bladder, which is composed of the outer shell and the water bladder deformation surface. During the injection process, the water bladder deformation surface is gradually expanded. Subsequently, a suitable amount of positive pressure gas is injected into the airbag, which is composed of the airbag shell and the airbag deformable surface, through a micro diaphragm pump. During the inflation process, the airbag deformable surface is gradually expanded. When the water bladder is filled with an appropriate amount of water and the air bladder is filled with an appropriate amount of positive pressure gas, the toothbrush can start to be used for spraying and brushing in one. By opening the channel between the air bladder shell and the water bladder shell, the gas in the air bladder enters the water bladder, pushing the water source to flow into the brush head. At the same time, the positive pressure gas in the air bladder also flows into the brush head. The two converge at the inlet of the inner cavity of the brush head and are divided into a dense microbubble mixture by the bubble dividing mesh. The microbubble mixture is sprayed out through the small outlet at the tip of the brush head, forming the function of spraying and brushing in one. When the product is finished and needs to be stored, a micro diaphragm pump provides negative pressure to the airbag and opens the channel between the airbag and the water bag. As the negative pressure enters the airbag and the water bag, the deformable surface of the water bag contracts to a position that is flat against the outer shell of the water bag, and the deformable surface of the airbag contracts to a position that is flat against the outer shell of the airbag. Subsequently, the internal space formed by the outer shell of the water bladder and the inner wall of the deformable surface of the water bladder is sufficient to accommodate the retrieval of the brush head. Rotating the brush head overcomes the elastic torque between the brush head shaft and the brush head retrieval positioning hole, allowing the brush head to enter the retrieval position. After the brush head is retrieved into place, the head end of the spring column on the same side can be elastically engaged in the locking hole of the locking seat, so that the brush head can safely and stably form a retrieval state.

[0007] By adopting the above technical solution, the present invention can achieve the following beneficial effects: (1) The present invention designs the water bladder shell and the air bladder shell as rigid cavity structures, and connects the water bladder deformation surface and the air bladder deformation surface to the inner wall of the water bladder shell and the air bladder shell respectively. This rigid-flexible integrated molding design eliminates the independent installation space and installation accessories required by traditional soft water bladders or air bladders, greatly simplifying the assembly and manufacturing process. When the water bladder deformation surface and the air bladder deformation surface are elastically expanded, they can fill the internal space of the water bladder shell and the air bladder shell, forming independent liquid storage and gas storage space. At the same time, the rigid water bladder shell and the air bladder shell provide stable support for the internal fluid. The deformation direction of the water bladder deformation surface and the air bladder deformation surface is controllable, which can accurately push the gas and water source to the brush head, improving the stability and efficiency of transmission. (2) This invention creatively utilizes the elastic reset characteristics of the water bladder deformation surface and the air bladder deformation surface to solve the conflict between the brush head storage space and the cleaning water and air storage space; after use, before the brush head is retracted, a negative pressure is provided by a micro diaphragm pump, which can force the water bladder deformation surface and the air bladder deformation surface to shrink to a position that is flat against the inner wall of the water bladder shell and the air bladder shell; this action quickly releases the volume originally occupied by the water bladder and the air bladder, freeing up a complete cavity inside the water bladder shell and the air bladder shell, so that the brush head can be folded and stored in the cavity smoothly; this design ensures sufficient water and air volume for a single cleaning without increasing the overall volume of the toothbrush, and also achieves the hidden storage of the brush head. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the handle assembly of the present invention; Figure 3 This is a schematic diagram of the components within the handle assembly of the present invention; Figure 4 This is a schematic diagram showing the connection of the toothbrush head component of the present invention; Figure 5 This is a schematic diagram showing the installation of the water bladder shell, air bladder shell, and handle assembly of the present invention. Figure 6 This is a schematic diagram of the structure of the water bladder deformation surface and the air bladder deformation surface of the present invention; Figure 7 This is a schematic diagram showing the connection between the miniature diaphragm pump of the present invention and the air bladder and water bladder; Figure 8 This is a schematic diagram showing the connection between the airbag and water bag of the present invention and the inner cavity of the brush head; Figure 9 This is a schematic diagram of the pipeline arrangement inside the brush head cavity of the present invention; Figure 10 This is a schematic diagram of the toothbrush head component of the present invention in a folded state; Figure 11 This is a schematic diagram illustrating the installation of the toothbrush head closure clip of the present invention; Figure 12 This is a front view of the toothbrush head closure clip portion of the present invention; Figure 13 This is a schematic diagram of the transmission structure of the toothbrush head closing clip of the present invention; Figure 14 This is a schematic diagram of the installation of the ultrasonic vibration module of the present invention.

[0010] Figure label: 1. Handle assembly; 2. Toothbrush head component; 3. Gas-liquid mixing jet assembly; 4. Toothbrush head closing clip; 5. Ultrasonic vibration module; 101. Handle shell; 102. Control panel; 103. Toothbrush head rotating base; 104. Toothbrush head retraction positioning hole; 105. Inner partition; 106. Battery; 107. Miniature diaphragm pump; 108. Dryer; 201. Brush head; 202. Rotating sleeve; 203. Brush bristles; 204. Spray nozzle; 205. Torsion spring; 301. Water bladder shell; 302. Air bladder shell; 303. Water bladder deformable surface; 304. Air bladder deformable surface; 305. Air bladder outlet; 306. Water bladder outlet; 307. Connecting post; 308. Positive pressure interface; 309. Negative pressure interface; 310. One-way output valve; 311. Bridging pipe 312. One-way valve assembly; 313. Water inlet pipe; 314. One-way water inlet valve; 315. Air pipe; 316. Water pipe; 317. Flow regulating valve; 318. Integrated pipe seat; 319. Flexible pipe; 320. Bubble separator; 321. Anti-backflow valve; 401. Spring post; 402. Locking seat; 403. Release button; 404. Spring post slide; 405. Spring-loaded snap ring; 406. First connecting arm; 407. First sliding column; 408. Central shaft; 409. Slide cylinder; 410. Sliding rod; 411. Second connecting arm; 412. Fixed column; 413. Lever; 414. Return spring; 415. First slide groove; 416. Second sliding column; 417. Second slide groove; 501. Ultrasonic vibration motor; 502. Vibration block. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0012] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0013] Example 1: Examples of the use of the gas-liquid mixing jet assembly 3 of the present invention in conjunction with the toothbrush head component 2 for folding, storage, and unfolding. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown; The handle assembly 1 includes a handle housing 101 and a miniature diaphragm pump 107; the toothbrush head component 2 includes a brush head 201; the gas-liquid mixing jet assembly 3 includes a water bladder housing 301, an air bladder housing 302, a bubble divider 320, and an anti-backflow valve 321; and the toothbrush head closing latch 4 includes a release button 403. The handle housing 101 in the handle assembly 1 has a toothbrush head recycling positioning hole 104 in its head end body. The micro diaphragm pump 107 is installed in the handle housing 101. The end shaft of the brush head 201 is elastically and torsionally connected to the head end of the toothbrush head recycling positioning hole 104, which allows the brush head 201 to be in a free unfolded state. The structure formed by the water bladder shell 301 and the air bladder shell 302 is installed in the toothbrush head recycling positioning hole 104. The inner wall of the water bladder shell 301 is connected to the water bladder deformation surface 303, and the inner wall of the air bladder shell 302 is connected to the air bladder deformation surface 304. The water bladder shell 301 and the water bladder deformation surface 303 form a water bladder, and the air bladder shell 302 and the air bladder deformation surface 304 form an air bladder. The micro diaphragm pump 107 can provide positive or negative pressure to the air bladder in one direction, and the air bladder can provide positive or negative pressure to the water bladder in one direction. Both the water bladder deformable surface 303 and the air bladder deformable surface 304 are made of elastic pressure-bearing materials. The deformable body of the water bladder deformable surface 303 is made of TPU material, which has higher tear resistance and can adapt to the pulse pressure of the liquid inside the water bladder. The deformable body of the air bladder deformable surface 304 is made of TPE / SEBS material, which has better repeated compression and rebound performance and can adapt to the high-frequency inflation and deflation of the air bladder. Furthermore, uniformly distributed guide reinforcing ribs are integrally formed on the outer surfaces of the water bladder deformable surface 303 and the air bladder deformable surface 304. After being pressurized to a certain range, the reinforcing ribs can provide sufficient structural support and deformation resistance to prevent the water bladder deformable surface 303 and the air bladder deformable surface 304 from over-expanding. Moreover, the reinforcing ribs are also made of elastic material, so they will not affect the retraction of the water bladder deformable surface 303 and the air bladder deformable surface 304 after being subjected to negative pressure, nor will they interfere with the folding and placement of the brush head 201. It can withstand preset working pressure and undergo elastic deformation during operation without excessive deformation, and returns to its initial shape after the pressure is removed. The outlets of the water bladder and air bladder are both connected to the inlet of the inner cavity of the brush head 201. The bubble divider 320 and the anti-backflow valve 321 are both installed in the inner cavity of the brush head 201. The anti-backflow valve 321 is located downstream of the bubble divider 320. The outer walls of the brush head 201 are fixed with card seats 402 on both sides. The head end of the handle housing 101 has spring posts 401 that slide inward on both sides. The release button 403 is slidably inserted into one side of the outer wall of the handle housing 101. The release button 403 is connected to the symmetrically distributed spring posts 401 by a transmission mechanism, so that when the release button 403 is pressed, the two sets of spring posts 401 can be released simultaneously. The working principle is as follows: When both the water bladder deformable surface 303 and the air bladder deformable surface 304 are in a contracted state, the water bladder deformable surface 303 is flat against the water bladder shell 301, and the air bladder deformable surface 304 is flat against the air bladder shell 302. By rotating the brush head 201 to overcome the elastic torque at its rotating end, the brush head 201 can be rotated into the inner cavity formed by the water bladder shell 301 and the air bladder shell 302, realizing the folding and recycling of the brush head 201 in the unused state. When the brush head 201 is retracted into place, the head end of the spring post 401 on the same side is elastically engaged in the card hole of the card seat 402, forming a safe and reliable storage action for the brush head 201, which is convenient to carry. By pressing the release button 403, the two sets of springs 401 retract synchronously, which can release the engagement between the head end of the spring 401 and the card hole of the card holder 402. Under the action of the elastic torque of the rotating shaft end of the brush head 201, the brush head 201 freely unfolds to a position that is close to the toothbrush head retraction positioning hole 104. When not in use, both the water bladder deformable surface 303 and the air bladder deformable surface 304 are in the contracted position. When brushing teeth, first inject an appropriate amount of water into the water bladder composed of the water bladder shell 301 and the water bladder deformable surface 303. During the injection process, the water bladder deformable surface 303 is gradually expanded. Subsequently, a suitable amount of positive pressure gas is injected into the airbag composed of the airbag shell 302 and the airbag deformable surface 304 through the micro diaphragm pump 107. During the inflation process, the airbag deformable surface 304 is gradually expanded. The expanded water bladder deformation surface 303 and air bladder deformation surface 304 can fill the internal space of the water bladder shell 301 and the air bladder shell 302. When the water bladder is filled with an appropriate amount of water and the air bladder is filled with an appropriate amount of positive pressure gas, the toothbrush can start to be used for spraying and brushing in one. By opening the channel between the air bladder shell 302 and the water bladder shell 301, the gas in the air bladder enters the water bladder, pushing the water source to flow into the brush head 201. At the same time, the positive pressure gas in the air bladder also flows into the brush head 201. The two converge at the inlet of the inner cavity of the brush head 201 and are divided into a dense microbubble mixture by the bubble dividing mesh 320. The microbubble mixture is sprayed out through the small outlet at the tip of the brush head 201, forming the function of spraying and brushing in one. The water in the water bladder and the positive pressure gas in the air bladder are sufficient to support the user in completing a single oral cleaning operation. Furthermore, the positive pressure gas capacity in the airbag is sufficient to empty the water in the water bag, so that the water bag can be emptied by positive pressure after use, which is equivalent to creating a clean state for the water bag after use. When the airbag is finished and needs to be stored, the micro diaphragm pump 107 provides negative pressure to the airbag and opens the channel between the airbag and the water bag. As the negative pressure enters the airbag and the water bag, the deformable surface 303 of the water bag contracts to a position that is flat against the outer shell 301 of the water bag, and the deformable surface 304 of the airbag contracts to a position that is flat against the outer shell 302 of the airbag. Subsequently, the inner space formed by the inner walls of the water bladder shell 301 and the water bladder deformable surface 303 is sufficient to accommodate the retrieval of the brush head 201. Rotating the brush head 201 overcomes the elastic torque between the brush head 201 pivot and the toothbrush head retrieval positioning hole 104, allowing the brush head 201 to enter the retrieval position. After the brush head 201 is retracted into place, the tip of the spring post 401 on the same side can be elastically engaged in the locking hole of the locking seat 402, so that the brush head 201 can safely and stably form a retrieval state.

[0014] The specific structure of the gas-liquid mixing injection component 3 is as follows: Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, an airbag outlet 305 is provided in the outlet end cavity wall of the airbag shell 302, and a waterbag outlet 306 is provided in the outlet end cavity wall of the waterbag shell 301. The aperture of the waterbag outlet 306 is larger than that of the airbag outlet 305, so that when the high-pressure gas and the gentle water flow enter the inner cavity of the brush head 201, a strong velocity difference and shearing effect can be formed, which promotes efficient gas-liquid mixing and microbubble generation. At the same time, the larger waterbag outlet 306 effectively reduces the flow resistance of the liquid, prevents water blockage, and improves the stability of system operation. The air pipe 315 is connected to the airbag outlet 305, and the water pipe 316 is connected to the waterbag outlet 306. Both the air pipe 315 and the water pipe 316 are equipped with flow regulating valves 317, and the flow regulating valves 317 are electrically connected to the control panel 102. The integrated tube seat 318 is located at the end of the inner cavity of the brush head 201. The air pipe 315 and the water pipe 316 pass through the toothbrush head rotating seat 103 and the rotating sleeve 202 on the same side and are connected to the corresponding flexible tube 319. The outer wall of the outlet end of the flexible tube 319 is fixedly connected to the integrated tube seat 318. In order to improve the gas-liquid mixing effect, the included angle of the outlet ends of the two sets of flexible tubes 319 is preset to be between 30° and 60°. A connecting post 307 is fixedly connected to the outer wall of both the water bladder shell 301 and the air bladder shell 302. The water bladder shell 301 and the air bladder shell 302 are detachably fixed in the toothbrush head recycling positioning hole 104 through the connecting post 307 and the fasteners used in conjunction. A positive pressure port 308 and a negative pressure port 309 are sequentially connected to the outer wall of the airbag housing 302. The positive pressure input port and the negative pressure input port of the micro diaphragm pump 107 are respectively connected to the positive pressure port 308 and the negative pressure port 309. A one-way output valve 310 is installed in both the positive pressure port 308 and the negative pressure port 309. The one-way output valve 310 is electrically connected to the control panel 102 and can control the micro diaphragm pump 107 to provide positive or negative pressure to the airbag housing 302 individually. A bridge pipe 311 connects the outer wall of the airbag shell 302 and the outer wall of the water bag shell 301. A one-way valve assembly 312 is installed in the bridge pipe 311. The one-way valve assembly 312 is electrically connected to the control panel 102. The one-way valve assembly 312 includes a first one-way valve and a second one-way valve arranged in parallel. The first one-way valve is in the direction of conduction from the airbag shell 302 to the water bag shell 301, realizing the one-way delivery of positive pressure from the airbag shell 302 to the water bag shell 301. The second one-way valve is in the direction of conduction from the water bag shell 301 to the airbag shell 302, realizing the one-way suction of negative pressure from the airbag shell 302 to the water bag shell 301. The outer wall of the water bladder shell 301 is also connected to a water filling pipe 313. A one-way water filling valve 314 is installed at the end of the water filling pipe 313 that passes through the main body of the handle shell 101, allowing only external water to be injected into the water filling pipe 313. When adding water to the water bladder, a 2-point water purifier faucet can be used to directly add water into the water inlet pipe 313 through the one-way water inlet valve 314. If a 2-point water purifier faucet is not available, a 2-point pipe adapter needs to be provided with the commonly used 6-point faucet, and water should be added through the one-way water inlet valve 314 via the 2-point pipe adapter. Since the water bladder deformation surface 303 is made of elastic pressure-bearing material, uniformly distributed guide reinforcing ribs are integrally formed on the outer surfaces of the water bladder deformation surface 303 and the air bladder deformation surface 304. During water addition, these ribs can withstand the preset working pressure and undergo elastic deformation. When the water bladder deformation surface 303 deforms to the preset degree and the water bladder is full, no more water can be added. At this point, the water entering the one-way water inlet valve 314 overflows, indicating that the water bladder is full. The specific structure of the toothbrush head closing clip 4 is as follows: Figure 10 , Figure 11 , Figure 12 and Figure 13As shown, a spring slide 404 is fixed inside the main body of the handle housing 101. The end of the spring 401 is slidably inserted into the spring slide 404 and does not detach from the spring slide 404. The spring-loaded snap ring 405 is snapped between the inner bottom surface of the spring slide 404 and the end of the spring 401, and can provide outward support elastic force for the spring 401. The tip of the spring 401 passes through the main cavity wall of the handle housing 101 and extends into the toothbrush head recycling positioning hole 104. The outer corner of the card holder 402 is a smooth transition surface, and the inner end of the spring 401 is a spherical surface, so that when the brush head 201 is folded and stored, the tip of the spring 401 can be smoothly inserted into the card hole of the card holder 402. Furthermore, the elastic clamping force provided by the spring-loaded spring 405 to the spring post 401 is much greater than the elastic torque provided by the torsion spring 205 to the brush head 201, so that after the head end of the spring post 401 is inserted into the card holder 402, the brush head 201 will not change from the folded state to the unfolded state without the spring post 401 being actively moved. One set of springs 401 has a first connecting arm 406 fitted inside its main body, and the other set of springs 401 has a second connecting arm 411 fitted inside its main body. A central shaft 408 is fixed inside the main body of the handle housing 101. The middle part of the lever 413 is screwed to the central shaft 408. A silicone sleeve is installed in the side wall of the handle housing 101. The release button 403 is flexibly slidably engaged in the silicone sleeve and does not detach from it. A fixed post 412 is connected between the lever 413 and the release button 403. A return spring 414 is sleeved on the outside of the fixed post 412. One end of the return spring 414 is engaged with the lever 413, and the other end is engaged with the inner wall of the handle housing 101, so that the release button 403 is in the outward pop-out state in the free state. One end of lever 413 is provided with a first groove 415 and the other end is provided with a second groove 417. The other end of the first connecting arm 406 is screwed with a first sliding column 407, which is slidably connected in the first groove 415. The other end of the second connecting arm 411 is fixedly connected with a sliding rod 410. A sliding cylinder 409 is fixedly connected in the main body of the handle housing 101. The sliding rod 410 is slidably inserted in the sliding cylinder 409. The other end of the sliding rod 410 is screwed with a second sliding column 416, which is slidably connected in the second groove 417. When the brush head 201 is in the unfolded state, under the action of the spring force of the spring clip 405, the spring post 401 is also in the outward extended state, and the release button 403 is also in the outward pop-out state. When the brush head 201 is in a folded state and needs to be unlocked, press the release button 403 to overcome the supporting force of the return spring 414, causing the lever 413 to rotate around the central axis 408. On the one hand, through the cooperation between the first slide groove 415 and the first slide post 407, one set of spring posts 401 is driven to retract over the supporting force of the corresponding spring-loaded retaining spring 405. On the other hand, through the cooperation between the second slide groove 417 and the second slide post 416, the sliding rod 410, the second connecting arm 411, and another set of spring posts are driven to retract over the supporting force of the corresponding spring-loaded retaining spring 405. This allows the synchronous retraction and release of the two sets of spring posts 401 to be achieved by pressing the release button 403, which can conveniently and quickly release the engagement between the spring posts 401 and the retaining seat 402. Furthermore, the installation of each component in the toothbrush head closing clip 4 will not affect the layout of the air pipe 315 and water pipe 316 inside the handle housing 101.

[0015] The specific installation location of the ultrasonic vibration module 5 is as follows: Figure 14 As shown, the ultrasonic vibration motor 501 is installed and fixed inside the handle housing 101 near the end of the brush head 201. The vibration block 502 is fixedly connected to the output shaft of the ultrasonic vibration motor 501, and the ultrasonic vibration motor 501 is electrically connected to the control panel 102. The control panel 102 can control the ultrasonic vibration motor 501, so that the ultrasonic vibration motor 501 generates micro-mechanical vibration at ultrasonic frequency inside, and drives the vibration block 502 to generate high-frequency reciprocating motion or elliptical trajectory motion, thus forming high-frequency vibration of the vibration block 502. The vibration of the vibrating block 502 can drive the bristles 203 to generate high-frequency vibration, thereby improving the cleaning effect of the bristles 203. On the other hand, it can generate a cavitation effect in the inner cavity of the brush head 201, thereby improving the gas-liquid mixing efficiency.

[0016] Example 2: The specific connection structure and application examples of the handle assembly 1 and toothbrush head component 2 of the present invention. Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown; The control panel 102 in the handle assembly 1 is installed in the main body of the handle housing 101, and an inner partition 105 for achieving rigid support is also fixed inside the handle housing 101. Toothbrush head rotating bases 103 are fixedly connected to both sides of the inside of the head end of the toothbrush head recycling positioning hole 104. The battery 106, the micro diaphragm pump 107, and the dryer 108 are all installed and fixed inside the handle housing 101 and are electrically connected to the control panel 102. The miniature diaphragm pump 107 utilizes existing mature technologies, such as the Hytect HT-1000 series miniature pumps. These products typically operate on DC 3V-6V power, with a flow rate of approximately 0.5-1.5L / min, a negative pressure of -40kPa, and a positive pressure of >100kPa. Its compact size perfectly fits the internal space of the handle housing 101, sufficient to drive airbag inflation and water jet propulsion. After the outlet end of the dryer 108 passes through the side wall of the inner partition 105, it is connected to the main body at the connection between the water bladder shell 301 and the air bladder shell 302. A gap, such as 3 to 4 mm, is left between the water bladder deformation surface 303 and the air bladder deformation surface 304 in the contracted state to realize the connection between the inner cavity of the water bladder shell 301 and the air bladder shell 302 and the outlet end of the dryer 108. The dryer 108 consists of a miniature fan and a heating element, which generates a drying airflow that is delivered into the interior space of the water bladder shell 301 and the air bladder shell 302. Because a gap is provided between the water bladder deformable surface 303 and the air bladder deformable surface 304, the airflow blown out by the dryer 108 can pass through the entire interior space formed by the water bladder shell 301 and the air bladder shell 302 along this gap. When the brush head 201 is folded and retracted, the drying gas generated by the dryer 108 accelerates the evaporation of moisture from the surface of the brush head 201, preventing bacterial growth and ensuring hygiene and safety for the next use. The toothbrush head component 2 has a rotating sleeve 202 connected to both ends of the brush head 201. The rotating sleeve 202 on the same side is rotatably connected to the toothbrush head rotating base 103. A torsion spring 205 is also installed between the rotating sleeve 202 and the toothbrush head rotating base 103. The torsion spring 205 is sleeved on the outside of the rotating sleeve 202, and one end of the torsion spring 205 is fixed to the outer wall of the end of the brush head 201, and the other end is fixed to the inner wall of the toothbrush head rotating base 103. It can provide elastic torque for the rotation of the rotating sleeve 202 relative to the toothbrush head rotating base 103, so that the brush head 201 can be in a free unfolded state when there is no external force pushing it. The bristles 203 are planted on the side of the head end of the brush head 201. The side wall of the head end of the brush head 201 is also evenly provided with spray holes 204, and the spray holes 204 and the bristles 203 are distributed alternately in sequence. The bristles 203 are made of PBT or DuPont bristles. In order to adapt to the impact of microbubble water flow and protect the gums, the tips of the bristles 203 need to be rounded (rounding rate ≥70%). The diameter of the single bristle of the bristles 203 is controlled between 0.10mm and 0.18mm. The nozzle 204, as the spray outlet for the microbubble mixed water, needs to be designed at the micropore level. It is recommended that the diameter of a single hole be controlled between 0.3mm and 0.8mm. If the hole diameter is too small, it is easy to be blocked by toothpaste or impurities. If the hole diameter is too large, it will not be able to form an effective microbubble spray force. Furthermore, the aperture of the bubble separator 320 should be smaller than that of the nozzle 204, and it is recommended to set it between 0.2mm and 0.5mm. This is because the bubble separator 320 is located upstream, and the nozzle 204 is located downstream. The bubble separator 320 can strongly shear the liquid to form dense microbubbles. When the microbubbles enter the nozzle 204, due to the larger aperture, the flow rate is relatively slow, and a gentle and wide-coverage microbubble water flow can be sprayed out, which ensures cleaning power without irritating the gums.

[0017] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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; and 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 the present invention.

Claims

1. An electric toothbrush that integrates spraying and brushing, comprising a handle assembly (1), characterized in that: It also includes a toothbrush head component (2), a gas-liquid mixing jet assembly (3), and a toothbrush head closing clip (4); The handle assembly (1) includes a handle housing (101) and a micro diaphragm pump (107). The toothbrush head component (2) includes a brush head (201). A toothbrush head recycling positioning hole (104) is provided in the head end body of the handle housing (101). The micro diaphragm pump (107) is installed in the handle housing (101). The end shaft of the brush head (201) is elastically and torsionally connected to the head end of the toothbrush head recycling positioning hole (104). The gas-liquid mixing jet assembly (3) includes a water bladder shell (301), an air bladder shell (302), a bubble divider (320), and an anti-backflow valve (321). The toothbrush head closing mechanism (4) includes a release button (403). The structure formed by the water bladder shell (301) and the air bladder shell (302) being fixedly connected to the outside is installed inside the toothbrush head recycling positioning hole (104). The inner wall of the water bladder shell (301) is connected to a water bladder deformation surface (303), and the inner wall of the air bladder shell (302) is connected to an air bladder deformation surface (304). The water bladder shell (301) and the water bladder deformation surface (303) form a water bladder, and the air bladder shell (302) and the air bladder deformation surface (304) form an air bladder. The micro diaphragm pump (107) can... It can provide positive or negative pressure to the air bladder in one direction, and the air bladder can provide positive or negative pressure to the water bladder in one direction; the outlets of the water bladder and the air bladder are connected to the inlet of the inner cavity of the brush head (201); the bubble divider (320) and the anti-backflow valve (321) are installed in the inner cavity of the brush head (201); the anti-backflow valve (321) is located downstream of the bubble divider (320); the outer walls of the brush head (201) are fixed with card seats (402); the head end of the handle housing (101) is slidably inserted with spring posts (401) on both sides; the release button (403) is slidably inserted on one side of the outer wall of the handle housing (101); pressing the release button (403) can release two sets of spring posts (401) simultaneously.

2. The electric toothbrush with integrated spraying and brushing as described in claim 1, characterized in that: The handle assembly (1) also includes a control panel (102), a battery (106), and a dryer (108). The control panel (102) is installed in the main body of the handle housing (101). Toothbrush head rotators (103) are fixed to both sides of the inside of the toothbrush head recycling positioning hole (104). The battery (106), the micro diaphragm pump (107), and the dryer (108) are all installed and fixed inside the handle housing (101) and electrically connected to the control panel (102). The outlet end of the dryer (108) is connected to the main body at the connection between the water bladder shell (301) and the air bladder shell (302).

3. An electric toothbrush with integrated spraying and brushing as described in claim 2, characterized in that: A gap is left between the water bladder deformation surface (303) and the air bladder deformation surface (304) in the contracted state.

4. An electric toothbrush with integrated spraying and brushing as described in claim 3, characterized in that: The toothbrush head component (2) also includes bristles (203) and torsion springs (205). Both sides of the end of the brush head (201) are connected to rotating sleeves (202). The rotating sleeves (202) on the same side are rotatably connected to the toothbrush head rotating base (103). A torsion spring (205) is also installed between the rotating sleeve (202) and the toothbrush head rotating base (103). The torsion spring (205) is sleeved on the outside of the rotating sleeve (202). One end of the torsion spring (205) is fixed to the outer wall of the end of the brush head (201), and the other end is fixed to the inner wall of the toothbrush head rotating base (103). The bristles (203) are planted on the side of the head end of the brush head (201). The side wall of the head end of the brush head (201) is also evenly provided with spray holes (204), and the spray holes (204) and bristles (203) are distributed alternately.

5. An electric toothbrush with integrated spraying and brushing as described in claim 2, 3, or 4, characterized in that: The gas-liquid mixing injection assembly (3) also includes an air pipe (315), a water pipe (316), an integrated pipe seat (318), and a flexible pipe (319). An airbag outlet (305) is provided in the outlet end cavity wall of the airbag shell (302), and a waterbag outlet (306) is provided in the outlet end cavity wall of the waterbag shell (301). The diameter of the waterbag outlet (306) is larger than the diameter of the airbag outlet (305). The air pipe (315) is connected to the airbag outlet (305), and the water pipe (316) is connected to the waterbag outlet (306). The air pipe (315) and the water pipe (319) are connected to each other. Each of the three components is equipped with a flow regulating valve (317), which is electrically connected to the control panel (102). The integrated tube seat (318) is located at the end of the inner cavity of the brush head (201). The air pipe (315) and water pipe (316) pass through the toothbrush head rotating seat (103) and rotating sleeve (202) on the same side and are connected to the corresponding flexible tube (319). The outer wall of the outlet end of the flexible tube (319) is fixedly connected to the integrated tube seat (318). The outer wall of the water bladder shell (301) and the air bladder shell (302) is fixedly connected to the connecting post (307).

6. An electric toothbrush with integrated spraying and brushing function according to claim 2, 3 or 4, characterized in that: A positive pressure port (308) and a negative pressure port (309) are sequentially connected to the outer wall of the airbag shell (302). The positive pressure input port and the negative pressure input port of the micro diaphragm pump (107) are connected to the positive pressure port (308) and the negative pressure port (309) respectively. A one-way output valve (310) is installed in both the positive pressure port (308) and the negative pressure port (309). The one-way output valve (310) is electrically connected to the control panel (102). A water filling pipe (313) is also connected to the outer wall of the water bag shell (301). A one-way water filling valve (314) is installed at the end of the water filling pipe (313) that passes through the main body of the handle shell (101).

7. An electric toothbrush with integrated spraying and brushing as described in claim 2, 3, or 4, characterized in that: A bridge pipe (311) is connected between the outer wall of the airbag shell (302) and the outer wall of the water bladder shell (301). A one-way valve assembly (312) is installed in the bridge pipe (311). The one-way valve assembly (312) is electrically connected to the control panel (102). The one-way valve assembly (312) includes a first one-way valve and a second one-way valve arranged in parallel. The conduction direction of the first one-way valve is from the airbag shell (302) to the water bladder shell (301), and the conduction direction of the second one-way valve is from the water bladder shell (301) to the airbag shell (302).

8. An electric toothbrush with integrated spraying and brushing as described in claim 1, 2, 3 or 4, characterized in that: The toothbrush head closing mechanism (4) also includes a spring-loaded retaining spring (405), a retaining post (412), a lever (413), and a return spring (414). A spring-loaded slide (404) is fixed inside the main body of the handle housing (101). The end of the spring (401) is slidably inserted into the spring-loaded slide (404) and cannot be disengaged from the spring-loaded slide (404). The spring-loaded retaining spring (405) is engaged between the inner bottom surface of the spring-loaded slide (404) and the end of the spring (401). One set of springs (401) has a first connecting arm (406) fitted inside its main body, and the other set of springs (401) has a second connecting arm (411) fitted inside its main body. A central shaft (408) is fixed inside the main body of the handle housing (101). The middle part of the lever (413) is screwed to the central shaft (408). A silicone sleeve is installed in the side wall of the handle housing (101). The release button (403) is flexibly slidably engaged in the silicone sleeve and cannot be detached from it. A fixed post (412) is connected between the lever (413) and the release button (403). A return spring (414) is sleeved on the outside of the fixed post (412), with one end of the return spring (414) locked to the lever (413) and the other end locked to the inner wall of the handle housing (101). One end of the lever (413) has a first groove (415), and the other end has a second groove (417). The other end of the first connecting arm (406) is screwed with a first... The first slide column (407) is slidably connected in the first slide groove (415), the other end of the second connecting arm (411) is fixedly connected to the sliding rod (410), the main body of the handle housing (101) is fixedly connected to the slide cylinder (409), the sliding rod (410) is slidably inserted into the slide cylinder (409), the other end of the sliding rod (410) is screwed to the second slide column (416), and the second slide column (416) is slidably connected in the second slide groove (417).

9. An electric toothbrush with integrated spraying and brushing function according to claim 2, 3 or 4, characterized in that: It also includes an ultrasonic vibration module (5), which includes an ultrasonic vibration motor (501) and a vibration block (502). The ultrasonic vibration motor (501) is installed and fixed inside the head end of the handle housing (101). The vibration block (502) is fixedly connected to the output shaft of the ultrasonic vibration motor (501). The ultrasonic vibration motor (501) is electrically connected to the control panel (102).

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