Water pick

Abstract

The utility model discloses an oral irrigator, which comprises a nozzle, a water outlet, a water inlet and a water outlet, the water tank is communicated with the liquid spraying opening through a liquid conveying flow path; the pump body is arranged on the liquid conveying flow path and used for pumping the water liquid in the water tank to the liquid spraying opening through the liquid conveying flow path; the functional liquid box comprises a box body and a damping piston, the damping piston is movably arranged in the box body and divides the space in the box body into a first cavity and a second cavity, functional liquid is contained in the first cavity, and the first cavity communicates with the liquid conveying flow path through a first communicating flow path; when the pump body drives the liquid in the liquid conveying flow path to flow, the pressure in the second cavity is larger than that in the first cavity, and the pressure difference between the second cavity and the first cavity drives the damping piston to extrude the space of the first cavity, so that the functional liquid flows to the liquid conveying flow path through the first communication flow path. According to the oral irrigator, the cleaning effect on the oral cavity is good, the functional liquid directly flows to the infusion flow path, the output efficiency of the functional liquid is high, and the needed waiting time is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of oral cleaning equipment, and in particular to a water flosser. Background Art

[0002] Oral irrigators usually use water as the flushing medium, removing dental plaque on the tooth surface and food debris between the teeth through the impact force of water. However, simply using water as a medium to clean the oral cavity cannot kill bacteria in the oral cavity, remove bad breath, or keep the breath fresh.

[0003] Although some water flossers are equipped with other boxes outside the water tank for storing liquids such as mouthwash, when in use, a valve is opened to allow the mouthwash to enter the water tank and mix with the water tank, so that the water flosser can achieve more functions. However, this method requires waiting for the mouthwash to flow into the water tank after the water tank is filled with water, and rinsing the teeth after it is fully mixed in the water tank, which requires too long a waiting time. Utility Model Content

[0004] The purpose of the present application is to provide a water flosser which has a good cleaning effect on the oral cavity, and the functional liquid flows directly to the infusion flow path, the output efficiency of the functional liquid is high, and the required waiting time is reduced.

[0005] In order to achieve the above-mentioned purpose, an embodiment of the present application provides a water flosser, comprising: a nozzle, provided with a liquid spray port; a water tank, connected to the liquid spray port through an infusion flow path; a pump body, arranged in the infusion flow path, and used to pump the water in the water tank to the liquid spray port through the infusion flow path; a functional liquid tank, comprising a tank body and a damping piston, the damping piston is movably arranged in the tank body and divides the space in the tank body into a first cavity and a second cavity, the first cavity contains functional liquid, and the first cavity is connected to the infusion flow path through a first connecting flow path; wherein, when the pump body drives the liquid in the infusion flow path to flow, the pressure in the second cavity is greater than the pressure in the first cavity, and the pressure difference between the second cavity and the first cavity drives the damping piston to squeeze the space of the first cavity, so that the functional liquid flows to the infusion flow path through the first connecting flow path.

[0006] In some embodiments of the present application, the infusion flow path is provided with a first connecting port and a second connecting port, the first cavity is connected to the first connecting port through the first connecting flow path, and the second cavity is connected to the second connecting port through the second connecting flow path; wherein, on the infusion flow path, the pump body is located upstream of the second connecting port, and the first connecting port is located downstream of the second connecting port; or on the infusion flow path, the first connecting port is located upstream of the pump body, and the pump body is located upstream of the second connecting port.

[0007] In some embodiments of the present application, the oral irrigator further includes: a throttle valve, disposed in the infusion flow path and located downstream of the second connecting port; wherein, when the first connecting port is located downstream of the second connecting port, the throttle valve is located upstream of the first connecting port.

[0008] In some embodiments of the present application, the infusion flow path includes a throttling section, and the second connecting port is arranged upstream of the throttling section; wherein, when the first connecting port is located downstream of the second connecting port, the throttling section is located upstream of the first connecting port.

[0009] In some embodiments of the present application, in the extension direction of the infusion flow path, the first communication port and the second communication port are both spaced apart from the nozzle.

[0010] In some embodiments of the present application, the water flosser further includes: a liquid outlet tube, which is detachably connected to the nozzle, the pump body includes a first shell and a second shell, the first shell and the second shell are connected to each other and clamp the liquid outlet tube to fix the relative position between the pump body and the liquid outlet tube, and the liquid outlet tube defines a part of the infusion flow path; wherein the liquid outlet tube is provided with a first connecting port, and the first cavity is connected to the first connecting port through the first connecting flow path; and / or the liquid outlet tube is provided with a second connecting port, and the second cavity is connected to the second connecting port through a second connecting flow path.

[0011] In some embodiments of the present application, the functional liquid tank and the infusion flow path are arranged along the radial direction of the oral irrigator; in the radial direction of the oral irrigator, a first connecting port is provided on the side of the infusion flow path facing the functional liquid tank, and the first cavity is connected to the first connecting port through the first connecting flow path; and / or in the radial direction of the oral irrigator, a second connecting port is provided on the side of the infusion flow path facing the functional liquid tank, and the second cavity is connected to the second connecting port through a second connecting flow path.

[0012] In some embodiments of the present application, the infusion flow path is provided with a second connecting port, the second cavity is connected to the second connecting port through the second connecting flow path, and the second connecting port is located downstream of the pump body; the oral irrigator also includes: a liquid outlet one-way valve, which is provided in the infusion flow path and located between the pump body and the second connecting port, allowing the liquid in the pump body to flow to the second connecting port, and preventing the liquid in the second connecting port from flowing to the pump body.

[0013] In some embodiments of the present application, the infusion flow path is provided with a second connecting port, the second cavity is connected to the second connecting port through the second connecting flow path, and the second connecting port is located downstream of the pump body; the oral irrigator also includes: an anti-backflow one-way valve, which is provided in the second connecting flow path, allowing the liquid in the infusion flow path to flow to the second cavity through the second connecting flow path, and preventing the liquid in the second cavity from flowing to the infusion flow path through the second connecting flow path.

[0014] In some embodiments of the present application, the infusion flow path is provided with a first connecting port, and the first cavity is connected to the first connecting port through the first connecting flow path; the second cavity is connected to the atmosphere, and on the infusion flow path, the first connecting port is located upstream of the pump body.

[0015] In some embodiments of the present application, the functional liquid tank and the infusion flow path are arranged along the radial direction of the oral irrigator; in the radial direction of the oral irrigator, the first connecting port is located on the side of the infusion flow path facing the functional liquid tank.

[0016] In some embodiments of the present application, the first cavity and the second cavity are arranged along the length direction of the oral irrigator, and the first cavity is closer to the water tank than the second cavity.

[0017] In some embodiments of the present application, the second cavity is connected to the atmosphere through an air inlet, and the air inlet is provided with a waterproof and breathable membrane.

[0018] In some embodiments of the present application, the first cavity and the second cavity are arranged along the length direction of the oral irrigator, and the infusion flow path extends along the length direction of the oral irrigator.

[0019] In some embodiments of the present application, the first cavity and the second cavity are arranged along the radial direction of the oral irrigator; in the length direction of the oral irrigator, the first cavity is connected to the first connecting flow path on a side facing the water tank.

[0020] In some embodiments of the present application, the water flosser also includes: a connecting connector, which has a first interface, a second interface and a third interface, the first interface, the second interface and the third interface are connected to each other, the first interface is connected to the liquid inlet of the pump body, the second interface is connected to the first cavity, and the third interface is connected to the water tank.

[0021] In some embodiments of the present application, the connecting joint is connected to the liquid inlet of the pump body.

[0022] In some embodiments of the present application, the water flosser also includes: a liquid inlet one-way valve, which is arranged in the infusion flow path, allowing the water in the water tank to flow to the pump body and preventing the liquid in the pump body from flowing to the water tank, and the liquid inlet one-way valve is located downstream of the first interface and upstream of the pump body.

[0023] In the water flosser of the embodiment of the present application, the functional liquid and the water liquid are mixed in the infusion flow path to form a mixed liquid, which is sprayed out from the spray port. It can not only remove the dental plaque on the tooth surface and the food residues between the teeth by the impact force, but also has additional functions to kill oral bacteria, remove bad breath, keep the breath fresh, and whiten teeth. In addition, the pressure difference between the second cavity and the first cavity drives the damping piston to squeeze the space of the first cavity, so that the functional liquid flows to the infusion flow path through the first connecting flow path. The functional liquid is driven more strongly, which is conducive to the functional liquid flowing into the infusion flow path, thereby improving the delivery efficiency of the functional liquid. Moreover, the functional liquid does not need to flow into the water tank, but flows directly to the infusion flow path, thereby shortening the flow path of the functional liquid, improving the output efficiency of the functional liquid, and reducing the required waiting time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the structure of the oral irrigator according to an embodiment of the present application;

[0026] Figure 2 This is one of the cross-sectional views of the oral irrigator according to an embodiment of the present application;

[0027] Figure 3 This is the second cross-sectional view of the oral irrigator according to the embodiment of the present application;

[0028] Figure 4 This is the third cross-sectional view of the oral irrigator according to the embodiment of the present application;

[0029] Figure 5 This is one of the schematic diagrams of the layout of the oral irrigator according to the embodiment of the present application;

[0030] Figure 6 This is the second schematic diagram of the layout of the oral irrigator according to the embodiment of the present application;

[0031] Figure 7 This is the third schematic diagram of the layout of the oral irrigator according to the embodiment of the present application;

[0032] Figure 8 This is the fourth schematic diagram of the layout of the oral irrigator according to the embodiment of the present application;

[0033] Fig. 9 This is the fifth schematic diagram of the layout of the oral irrigator according to the embodiment of the present application;

[0034] Fig.10 This is the sixth schematic diagram of the layout of the oral irrigator according to the embodiment of the present application;

[0035] Fig.11 This is a connection diagram of the oral irrigator according to an embodiment of the present application.

[0036] Description of Figure Numbers:

[0037] Water flosser 1.

[0038] Nozzle 100, liquid spraying port 110,

[0039] Water tank 200,

[0040] The infusion flow path 300, the first communication port 330, the second communication port 340, the throttle valve 350, the throttle section 360, the liquid outlet pipe 370,

[0041] Pump body 400, liquid inlet check valve 410, first shell 420, second shell 430, liquid outlet check valve 440,

[0042] Functional fluid tank 500, air inlet 510, box body 520, damping piston 530, first cavity 540, first communication flow path 541, second cavity 550, second communication flow path 551,

[0043] Drug delivery flow path 600, anti-backflow check valve 630,

[0044] Connecting connector 800 , first interface 810 , second interface 820 , third interface 830 , housing 900 , waterproof breathable membrane 920 , battery 930 , and electric control board 940 .

[0045] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] In order to make the objectives, technical solutions and advantages of the present application clearer, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0047] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0048] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0050] The oral irrigator 1 according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0051] like Figure 1 , Figure 5-Figure 10 As shown, the oral irrigator 1 of the embodiment of the present application includes a nozzle 100 , a water tank 200 , a pump body 400 and a functional liquid tank 500 .

[0052] The nozzle 100 is provided with a liquid spraying port 110, and the water tank 200 is connected to the liquid spraying port 110 via an infusion flow path 300. The water tank 200 can be used to store water, and the pump body 400 is provided in the infusion flow path 300. The pump body 400 is used to pump the water in the water tank 200 to the liquid spraying port 110 through the infusion flow path 300.

[0053] For example, Figure 2-Figure 3 As shown, the pump body 400 can be a plunger pump or a diaphragm pump. Since the plunger pump and the diaphragm pump are positive displacement pump bodies, the positive displacement pump body can isolate the liquid inlet and the liquid outlet when it stops running, so that the pump body 400 can prevent the liquid in the infusion flow path 300 from flowing back. In addition, the dental flosser 1 also includes a battery 930 and an electric control board 940, and the battery 930 and the electric control board 940 are both connected to the pump body 400.

[0054] The functional liquid tank 500 includes a tank body 520 and a damping piston 530. The damping piston 530 is movably disposed in the tank body 520 and divides the space in the tank body 520 into a first cavity 540 and a second cavity 550. The first cavity 540 contains a functional liquid. The liquid in the functional liquid tank 500 is different from the type of liquid in the water tank 200. For example, the functional liquid tank 500 can be used to store functional liquids with different functions such as mouthwash, cleaning liquid, and medicinal liquid. The liquid in the functional liquid tank 500 can achieve at least one of the functions of sterilization, deodorization, tartar removal, and teeth whitening.

[0055] Specifically, there is a damping force between the box body 520 and the damping piston 530. The pressure difference between the second cavity 550 and the first cavity 540 needs to be greater than the above-mentioned damping force in order to drive the damping piston 530 to squeeze the space of the first cavity 540. The movement of the damping piston 540 is relatively smooth. On the one hand, it can prevent the damping piston 530 from excessively squeezing the space of the first cavity 540 in a short time and causing excessive outflow of functional fluid, thereby ensuring the mixing ratio of water and functional fluid in the infusion path 300. On the other hand, when the pump body 400 stops running, the damping piston 530 can remain in the current position under the action of the above-mentioned damping force to prevent the functional fluid from leaking from the first connecting path 541 and the nozzle 100.

[0056] In addition, the damping piston 530 can be made of soft glue, for example, the damping piston 530 can be made of silicone or rubber, so that the damping piston 530 and the inner wall of the box body 520 fit tightly, thereby improving the sealing of the first cavity 540 and the second cavity 550, and preventing the functional fluid of the first cavity 540 from leaking into the second cavity 550.

[0057] The first cavity 540 is connected to the infusion flow path 300 through the first communication flow path 541. When the pump body 400 drives the liquid in the infusion flow path 300 to flow, the pressure in the second cavity 550 is greater than the pressure in the first cavity 540, and the pressure difference between the second cavity 550 and the first cavity 540 drives the damping piston 530 to squeeze the space of the first cavity 540, so that the functional fluid flows to the infusion flow path 300 through the first communication flow path 541.

[0058] In this way, the functional liquid and the water liquid are mixed in the infusion flow path 300 to form a mixed liquid, which is sprayed out from the spray port 110. Not only can the dental plaque on the tooth surface and food residues between the teeth be removed by the impact force of the mixed liquid, but the mixed liquid also has additional functions, such as killing oral bacteria, removing bad breath, keeping breath fresh, and whitening teeth. Users can add functional liquids with different functions into the functional liquid tank 500 according to their needs.

[0059] In addition, the second cavity 550 can be connected to the atmosphere, or the second cavity 550 can be connected to the infusion path 300, and the pressure of the second cavity 550 can be increased by the atmosphere or the liquid in the infusion path 300. When the pump body 400 drives the liquid in the infusion path 300 to flow, the pressure in the second cavity 550 is greater than the pressure in the first cavity 540.

[0060] Compared to the prior art water flosser that extracts the functional fluid only by the negative pressure of the infusion path, the present application, on the basis of generating negative pressure in the infusion path 300 to draw the functional fluid, also utilizes the pressure difference between the second cavity 550 and the first cavity 540 to drive the movement of the damping piston 540 to squeeze the volume of the first cavity 540 to achieve the discharge of the functional fluid. The functional fluid is subjected to a greater driving force, which is conducive to the functional fluid flowing into the infusion path 300, improves the delivery efficiency of the functional fluid, and can also effectively ensure that the mixing ratio of the functional liquid and the water liquid meets the expectations.

[0061] Since the first cavity 540 is connected to the infusion path 300 through the first connecting path 541, the functional fluid in the first cavity 540 does not need to flow into the water tank 200, but can flow directly to the infusion path 300 through the first connecting path 541. The functional fluid and the aqueous liquid are mixed in the infusion path 300, which not only ensures the mixing of the functional fluid and the aqueous liquid, but also shortens the flow path of the functional fluid, improves the output efficiency of the functional fluid, and reduces the required waiting time.

[0062] like Fig. 9 and Fig.10 As shown, the above-mentioned infusion flow path 300 is provided with a first communication port 330 and a second communication port 340, the first cavity 540 is connected with the first communication port 330 through the first communication flow path 541, and the second cavity 550 is connected with the second communication port 340 through the second communication flow path 551. In the infusion flow path 300, the pump body 400 is located upstream of the second communication port 340, and the first communication port 330 is located downstream of the second communication port 340. That is to say, when the pump body 400 pumps liquid to the liquid spraying port 110, the liquid first flows through the second communication port 340, then flows through the first communication port 330, and finally sprays out from the liquid spraying port 110.

[0063] For example, the working conditions of the water flosser 1 are as follows:

[0064] First, the pump body 400 pumps water from the water tank 200;

[0065] Then, the pump body 400 pumps liquid toward the spray port 110. At this time, on the infusion path 300, the liquid downstream of the pump body 400 flows toward the spray port 110, and a part of the liquid downstream of the pump body 400 is sprayed out from the spray port 110, and another part of the liquid downstream of the pump body 400 flows into the second cavity 550 through the second connecting port 340 and the second connecting flow path 551. The amount of liquid in the second cavity 550 increases, so that the pressure of the second cavity 550 is greater than the pressure of the first cavity 540. Under the action of the pressure difference, the damping piston 540 moves toward the first cavity 540 and squeezes the space of the first cavity 540, so that the functional fluid flows to the infusion path 300 through the first connecting flow path 541 and the first connecting port 330, and the functional liquid and the water are mixed in the infusion path 300 to form a mixed liquid.

[0066] Since the first connecting port 330 and the second connecting port 340 are both connected to the portion of the infusion path 300 located downstream of the pump body 400, on the one hand, the functional liquid tank 500 can be closer to the nozzle 100 relative to the pump body 400, and the distance between the first connecting port 330 and the second connecting port 340 can be set closer to reduce the space occupied by the functional liquid tank 500, which is conducive to the miniaturization of the water flosser 1. On the other hand, the functional liquid will not flow through the pump body 400, thereby reducing the probability of the pump body 400 being corroded by the functional liquid.

[0067] like Figure 7 and Figure 8 As shown, the above-mentioned infusion flow path 300 is provided with a first communication port 330 and a second communication port 340, the first cavity 540 is connected with the first communication port 330 through the first communication flow path 541, and the second cavity 550 is connected with the second communication port 340 through the second communication flow path 551. Among them, on the infusion flow path 300, the first communication port 330 is located upstream of the pump body 400, and the pump body 400 is located upstream of the second communication port 340. That is, when the pump body 400 draws water from the water tank 200, the water flows into the pump body 400 after passing through the first communication port 330, and when the pump body 400 pumps liquid to the liquid spraying port 110, the liquid flows through the second communication port and is sprayed out from the liquid spraying port 110.

[0068] For example, the working conditions of the water flosser 1 are as follows:

[0069] First, the pump body 400 draws water from the water tank 200. At this time, the functional liquid in the first cavity 540 flows to the infusion path 300 through the first communication path 541 and the first communication port 330. The functional liquid and the water are mixed in the infusion path 300 to form a mixed liquid, which is then drawn into the pump body 400.

[0070] Then, the pump body 400 pumps liquid toward the spray port 110. At this time, on the infusion path 300, the liquid downstream of the pump body 400 flows toward the spray port 110, and a part of the liquid downstream of the pump body 400 is sprayed out from the spray port 110, and another part of the liquid downstream of the pump body 400 flows into the second cavity 550 through the second connecting port 340 and the second connecting flow path 551. The amount of liquid in the second cavity 550 increases, so that the pressure of the second cavity 550 is greater than the pressure of the first cavity 540. Under the action of the pressure difference, the damping piston 540 moves toward the first cavity 540 and squeezes the space of the first cavity 540, so that the functional fluid flows to the infusion path 300 through the first connecting flow path 541 and the first connecting port 330.

[0071] Since the first connecting port 330 is located upstream of the pump body 400, the functional liquid and the aqueous liquid have a long flow path after mixing, and the functional liquid and the aqueous liquid are mixed for a long time, so the functional liquid and the aqueous liquid are mixed more fully and evenly, which is beneficial to ensure the cleaning effect of the liquid sprayed from the spray port 110 on various areas of the teeth.

[0072] like Figure 7 and Fig. 9 As shown, the oral irrigator 1 further includes a throttle valve 350, which is disposed in the infusion flow path 300 and is located downstream of the second communication port 340. When the first communication port 330 is located downstream of the second communication port 340, the throttle valve 350 is located upstream of the first communication port 330; when the first communication port 330 is located upstream of the pump body 400, the throttle valve 350 is also located downstream of the first communication port 330.

[0073] Since the liquid flow rate of the infusion flow path 300 is reduced at the throttle valve 350, the flow resistance at the throttle valve 350 is increased, that is, the pressure at the throttle valve 350 is increased. By increasing the pressure downstream of the second connecting port 340, the pressure downstream of the second connecting port 340 is made greater than the pressure upstream of the second connecting port 340. When the pump body 400 pumps liquid to the liquid injection port 110, under the action of the pressure difference between the upstream and downstream of the second connecting port 340, more liquid flows into the second cavity 550, thereby increasing the pressure difference between the second cavity 550 and the first cavity 540, so that the damping piston 530 moves more smoothly toward the first cavity 540, squeezing the space of the first cavity 540, and the functional liquid flows into the infusion flow path 300 more and flows more smoothly.

[0074] like Figure 8 and Fig.10As shown, the above-mentioned infusion flow path 300 includes a throttling section 360, and the second connecting port 340 is arranged upstream of the throttling section 360, wherein when the first connecting port 330 is located downstream of the second connecting port 340, the throttling section 360 is located upstream of the first connecting port 330; when the first connecting port 330 is located upstream of the pump body 400, the throttling section 360 is also located downstream of the first connecting port 330.

[0075] Specifically, the throttling section 360 is a part of the infusion flow path 300. The cross-sectional area of ​​the throttling section 360 is smaller than the cross-sectional area of ​​the upstream part of the infusion flow path 300 located at the second communication port 340, so that the throttling section 360 can play a throttling role.

[0076] Since the liquid flow rate of the infusion flow path 300 is reduced at the throttling section 360, the flow damping at the throttling section 360 is increased, that is, the pressure at the throttling section 360 is increased. By increasing the pressure downstream of the second connecting port 340, the pressure downstream of the second connecting port 340 is made greater than the pressure upstream of the second connecting port 340. When the pump body 400 pumps liquid to the liquid spray port 110, under the action of the pressure difference between the upstream and downstream of the second connecting port 340, more liquid flows into the second cavity 550, thereby increasing the pressure difference between the second cavity 550 and the first cavity 540, so that the damping piston 530 moves more smoothly toward the first cavity 540, squeezing the space of the first cavity 540, and the functional liquid flows into the infusion flow path 300 more and flows more smoothly.

[0077] like Figure 5-Figure 10 As shown, in the extension direction of the infusion flow path 300, the first communication port 330 and the second communication port 340 are both spaced apart from the nozzle 100. That is, the second communication port 340 and the nozzle 100 are spaced apart in the extension direction of the infusion flow path 300. When the first communication port 330 is located upstream of the pump body, the first communication port 330 and the nozzle 100 are spaced apart in the extension direction of the infusion flow path 300; when the first communication port 330 is located downstream of the second communication port 340, the first communication port 330 and the nozzle 100 are also spaced apart in the extension direction of the infusion flow path 300.

[0078] In this way, the functional liquid and the aqueous liquid have begun to mix before flowing into the nozzle 100. In the extension direction of the infusion flow path 300, the functional liquid flows from the first connecting port 330 to the liquid spray port 110 and must at least flow through the flow channel in the nozzle 100. When flowing to the liquid spray port 110, the functional liquid and the aqueous liquid are mixed more evenly, which is beneficial to ensure the cleaning effect of the liquid sprayed from the liquid spray port 110 on various areas of the teeth.

[0079] like Figure 7-Figure 11As shown, the above-mentioned oral irrigator 1 further includes a liquid outlet pipe 370, which is detachably connected to the nozzle 100, and the pump body 400 includes a first shell 420 and a second shell 430, which are connected to each other and clamp the liquid outlet pipe 370 to fix the relative position between the pump body 400 and the liquid outlet pipe 370. The liquid outlet pipe 370 defines a part of the infusion flow path 300, the second communication port 340 is provided at the liquid outlet pipe 370, and when the first communication port 330 is located downstream of the second communication port 340, the first communication port 330 is provided at the liquid outlet pipe 370.

[0080] That is to say, the pump body 400, the liquid outlet pipe 370 and the nozzle 100 are connected in sequence, and the pump body 400 is fixedly connected to the liquid outlet pipe 370 by clamping the liquid outlet pipe 370, which can improve the sealing and connection strength between the pump body 400 and the liquid outlet pipe 370, so as to reduce the risk of liquid leakage at the connection between the pump body 400 and the liquid outlet pipe 370, and the pump body 400 and the liquid outlet pipe 370 are easy to disassemble and assemble, which can simplify the disassembly and assembly steps and improve production efficiency and later maintenance efficiency. In addition, the liquid outlet pipe 370 and the nozzle 100 are detachably connected, which can not only ensure the communication between the liquid outlet pipe 370 and the nozzle 100, but also facilitate the replacement of the nozzle 100, so as to improve the cleanliness of the oral irrigator 1.

[0081] Compared with setting the second connecting port 340 in the nozzle 100, by setting the second connecting port 340 in the liquid outlet pipe 370, the second connecting port 340 and the nozzle 100 can be spaced apart to prevent the liquid in the nozzle 100 from being diverted to the second connecting flow path 551, so as to ensure sufficient liquid output from the liquid spray port 110 and optimize the cleaning effect on the teeth.

[0082] When the first connecting port 330 is located downstream of the second connecting port 340, compared with setting the first connecting port 330 in the nozzle 100, by setting the first connecting port 330 in the liquid outlet pipe 370, the first connecting port 330 and the nozzle 100 can be spaced apart, and the functional liquid and the water liquid begin to mix before flowing into the nozzle 100. In the extension direction of the infusion flow path 300, the functional liquid flows from the first connecting port 330 to the liquid injection port 110 and at least flows through the flow channel in the nozzle 100. When flowing to the liquid injection port 110, the functional liquid and the water liquid are mixed more evenly, which is beneficial to ensure the cleaning effect of the liquid sprayed from the liquid injection port 110 on various areas of the teeth.

[0083] like Figure 5-Figure 10As shown, the functional liquid tank 500 and the infusion flow path 300 are arranged along the radial direction of the oral irrigator 1, and in the radial direction of the oral irrigator 1, the first communication port 330 is located on the side of the infusion flow path 300 facing the functional liquid tank 500. In this way, the distance between the first communication port 330 and the infusion flow path 300 is closer, which is conducive to shortening the length of the first communication flow path 541, so that the functional liquid in the first cavity 540 can flow to the infusion flow path 300 more quickly.

[0084] like Figure 7-Figure 10 As shown, the functional liquid tank 500 and the infusion flow path 300 are arranged along the radial direction of the oral irrigator 1, and in the radial direction of the oral irrigator 1, the second communication port 340 is located on the side of the infusion flow path 300 facing the functional liquid tank 500. In this way, the distance between the second communication port 340 and the infusion flow path 300 is closer, which is conducive to shortening the length of the second communication flow path 551, so that the liquid in the infusion flow path 300 can flow to the second cavity 550 more quickly, so as to drive the damping piston 530 to move in time.

[0085] like Figure 5-Figure 10 As shown, the above-mentioned water flosser 1 also includes a liquid outlet one-way valve 440, which is arranged in the infusion flow path 300 and is located between the pump body 400 and the second connecting port 340. The liquid outlet one-way valve 440 allows the liquid in the pump body 400 to flow to the second connecting port 340, and the liquid outlet one-way valve 440 prevents the liquid in the second connecting port 340 from flowing to the pump body 400.

[0086] Specifically, when the pump body 400 pumps liquid to the liquid spray port 110, the liquid outlet one-way valve 440 is opened, and when the pump body 400 draws liquid from the water tank 200, the liquid outlet one-way valve 440 is closed, so as to prevent the liquid located downstream of the water outlet one-way valve 440 from being drawn into the pump body 400, thereby preventing the liquid in the second cavity 550 from flowing back into the infusion path 300. On the one hand, it prevents the liquid in the infusion path 300 from being contaminated by the liquid in the second cavity 550, thereby ensuring the cleanliness of the liquid in the infusion path 300, making the water flosser 1 safer and beneficial to the health of the user. On the other hand, it prevents the pressure in the second cavity 550 from being reduced, which causes the damping piston 530 to move toward the second cavity 550, thereby avoiding an increase in the outflow time of the functional liquid in the first cavity 540, which is beneficial to the rapid outflow of the functional liquid.

[0087] like Figure 7-Figure 10 As shown, the above-mentioned water flosser 1 also includes an anti-backflow one-way valve 630, which is arranged in the second connecting flow path 551. The anti-backflow one-way valve 630 allows the liquid in the infusion flow path 300 to flow to the second cavity 550 through the second connecting flow path 551, and the anti-backflow one-way valve 630 prevents the liquid in the second cavity 550 from flowing to the infusion flow path 300 through the second connecting flow path 551.

[0088] Specifically, when the pump body 400 pumps liquid to the liquid spray port 110, the anti-backflow check valve 630 is opened, and when the pump body 400 draws liquid from the water tank 200, the anti-backflow check valve 630 is closed, so as to prevent the liquid located downstream of the anti-backflow check valve 630 from being drawn by the pump body 400, thereby preventing the liquid in the second cavity 500 from flowing back into the infusion path 300. On the one hand, it prevents the liquid in the infusion path 300 from being contaminated by the liquid in the second cavity 500, thereby ensuring the cleanliness of the liquid in the infusion path 300, making the water flosser 1 safer and beneficial to the health of the user. On the other hand, it prevents the pressure in the second cavity 500 from decreasing, which causes the damping piston 530 to move toward the second cavity 500, thereby avoiding an increase in the outflow time of the functional liquid in the first cavity 540, which is beneficial to the rapid outflow of the functional liquid.

[0089] like Figure 5 and Figure 6 As shown, the above-mentioned infusion flow path 300 is provided with a first connecting port 330, the first cavity 540 is connected to the first connecting port 330 through the first connecting flow path 541, and the second cavity 550 is connected to the atmosphere. On the infusion flow path 300, the first connecting port 330 is located upstream of the pump body 400.

[0090] Since the first connecting port 330 is located upstream of the pump body 400, the functional liquid and the aqueous liquid have a long flow path after mixing, and the functional liquid and the aqueous liquid are mixed for a long time, so the functional liquid and the aqueous liquid are mixed more fully and evenly, which is beneficial to ensure the cleaning effect of the liquid sprayed from the spray port 110 on various areas of the teeth.

[0091] In addition, the second cavity 550 is connected to the atmosphere. On the one hand, when the functional fluid in the first cavity 540 is extracted, the damping piston 530 moves toward the first cavity 540, the volume of the second cavity 550 increases, and the pressure in the second cavity 550 decreases and is in a negative pressure state. In order to prevent the functional fluid in the first cavity 540 from being unable to flow out, the atmosphere can be replenished into the second cavity 550 to balance the pressure of the second cavity 550 and prevent the second cavity 550 from being in a negative pressure state. On the other hand, there is no need to set up an additional flow channel to connect the second cavity 550 with the infusion flow path 300, which is beneficial to simplify the structure of the oral irrigator 1.

[0092] For example, the second cavity 550 is provided with an air inlet 510, and the air inlet 510 is connected to the atmosphere, wherein the above-mentioned water flosser 1 further includes a housing 900, and the housing 900 is provided with an air inlet passage, and the second cavity 550 is connected to the atmosphere through the air inlet passage. The air inlet passage can be a through hole constructed as the housing 900, or the air inlet passage is a pipeline.

[0093] In addition, the above-mentioned oral irrigator 1 further includes a waterproof breathable membrane 920, which is disposed at the air inlet hole 510, or the waterproof breathable membrane 920 is disposed at the air inlet channel, or the air inlet hole 510 is provided with a waterproof breathable membrane 920, and the air inlet channel is also provided with a waterproof breathable membrane 920. The waterproof breathable membrane 920 allows the second cavity 550 to exchange air with the atmosphere, and the waterproof breathable membrane 920 can further prevent the liquid in the first cavity 540 from flowing out of the air inlet hole 510 or the air inlet channel.

[0094] In this way, it can be ensured that the second cavity 550 and the atmosphere can be ventilated normally, and the functional liquid in the first cavity 540 can be leaked into the atmosphere, thereby avoiding waste of the functional liquid.

[0095] like Figure 5 and Figure 6 As shown, the functional liquid tank 500 and the infusion flow path 300 are arranged along the radial direction of the oral irrigator 1, and in the radial direction of the oral irrigator 1, the first communication port 330 is located on the side of the infusion flow path 300 facing the functional liquid tank 500. In this way, the distance between the first communication port 330 and the infusion flow path 300 is closer, which is conducive to shortening the length of the first communication flow path 541, so that the functional liquid in the first cavity 540 can flow to the infusion flow path 300 more quickly.

[0096] like Figure 6 As shown, the first cavity 540 and the second cavity 550 are arranged along the length direction of the oral irrigator 1, and the first cavity 540 is closer to the water tank 200 than the second cavity 550. In this way, the first cavity 540 is closer to the upstream part of the infusion flow path 300 located in the pump body 400, and the second cavity 550 is closer to the downstream part of the infusion flow path 300 located in the pump body 400. On the one hand, the first connecting flow path 541 and the second connecting flow path 551 can be shortened, reducing costs and reducing the volume of the oral irrigator 1, which is conducive to the functional liquid to flow into the infusion flow path 300 more quickly, and the liquid in the infusion flow path 300 can flow into the second cavity 550 more quickly, so as to achieve the rapid outflow of the functional liquid. On the other hand, the first connecting flow path 541 and the second connecting flow path 551 do not need to be staggered, and the structure of the oral irrigator 1 is simple and convenient to layout.

[0097] like Figure 6-Figure 10 As shown, the first cavity 540 and the second cavity 550 are arranged along the length direction of the oral irrigator 1, and the infusion flow path 300 extends along the length direction of the oral irrigator 1. The first cavity 540 can be connected to the infusion flow path 300 through the first communication flow path 541, and the second cavity 550 can be connected to the infusion flow path 300 through the second communication flow path 551. In this way, it is beneficial for both the first cavity 540 and the second cavity 550 to be connected to the infusion flow path 300, and the overall size of the first communication flow path 541 and the second communication flow path 551 is smaller.

[0098] like Figure 5 As shown, the first cavity 540 and the second cavity 550 are arranged along the radial direction of the oral irrigator 1. In the length direction of the oral irrigator 1, the side of the first cavity 540 facing the water tank 200 is connected to the first communication flow path 541. The second cavity 550 can be connected to the atmosphere. In this way, it is convenient for the first cavity 540 to be connected to the infusion flow path 300, and the size of the first communication flow path 541 is small.

[0099] like Figure 4 and Fig.11 As shown, the above-mentioned oral irrigator 1 also includes a connecting joint 800, which is provided with a first interface 810, a second interface 820 and a third interface 830. The first interface 810, the second interface 820 and the third interface 830 are connected to each other, the first interface 810 is connected to the liquid inlet of the pump body 400, the second interface 820 is connected to the first cavity 540, and the third interface 830 is connected to the water tank 200. The connecting joint 800 can be a three-way pipe, a four-way pipe, etc.

[0100] By providing the connecting joint 800, the water tank 200, the pump body 400 and the functional liquid tank 500 can be connected to each other, which is beneficial to ensuring the connection reliability between the drug delivery path 600 and the infusion path 300, and the functional liquid flows more smoothly at the connection between the drug delivery path 600 and the infusion path 300.

[0101] like Fig.11 As shown, the above-mentioned connection joint 800 is connected to the pump body 400. For example, the first interface 810 of the connection joint 800 is inserted into the liquid inlet of the pump body 400. In this way, there is no need to set up an additional connecting pipe between the connection joint 800 and the pump body 400, which can simplify the assembly process and ensure the relative position reliability between the connection joint 800 and the pump body 400. On the other hand, it shortens the length of the infusion flow path 300 between the pump body 400 and the water tank 200, which is conducive to reducing the flow path of the functional liquid.

[0102] like Figure 5-Figure 8 As shown, the above-mentioned water flosser 1 also includes a liquid inlet one-way valve 410, which is arranged in the infusion flow path 300. The liquid inlet one-way valve 410 allows the water in the water tank 200 to flow to the pump body 400, and the liquid inlet one-way valve 410 prevents the liquid in the pump body 400 from flowing to the water tank 200. The liquid inlet one-way valve 410 is located downstream of the first interface 810 and upstream of the pump body 400.

[0103] Specifically, when the pump body 400 pumps water, the pressure in the pump body 400 decreases, and in the extension direction of the liquid inlet check valve 410, the pressure upstream of the liquid inlet check valve 410 is greater than the pressure downstream of the liquid inlet check valve 410. Under the action of the pressure difference, the liquid in the water tank 200 flows into the pump body 400 through the liquid inlet check valve 410.

[0104] When the pump body 400 discharges water, the pressure in the pump body 400 increases. In the extension direction of the liquid inlet one-way valve 410, the pressure upstream of the liquid inlet one-way valve 410 is made smaller than the pressure downstream of the liquid inlet one-way valve 410. Under the action of the pressure difference and the retaining force of the liquid inlet one-way valve 410 itself, the liquid inlet one-way valve 410 is closed. The liquid inlet one-way valve 410 prevents the liquid in the pump body 400 from flowing back to the water tank 200, so as to ensure that the liquid in the pump body 400 flows to the nozzle 100 and is sprayed out from the nozzle 100, thereby cleaning the oral cavity.

[0105] For example, when the first connecting port 330 is located upstream of the pump body 400, the first connecting port 330 is located upstream of the liquid inlet check valve 410. In this way, on the one hand, the distance between the liquid inlet check valve 410 and the pump body 400 is small. For example, the liquid inlet check valve 410 can be installed to the liquid inlet of the pump body 400. Not only is the installation of the liquid inlet check valve 410 convenient, but also when the pump body 400 discharges water, the liquid in the pump body 400 can flow to the nozzle 100 more thoroughly. On the other hand, when the pump body 400 discharges water, the liquid in the pump body 400 can prevent the liquid in the pump body 400 from flowing to the first connecting port 330, thereby preventing the liquid in the liquid inlet flow path 310 from flowing back to the first connecting flow path 541.

[0106] like Figure 5-Figure 8 As shown, the first communicating port 330 and the liquid inlet one-way valve 410 are staggered in the radial direction of the oral irrigator 1, or the first communicating port 330 and the liquid inlet one-way valve 410 are staggered in the length direction of the oral irrigator 1, or the first communicating port 330 and the liquid inlet one-way valve 410 are staggered in the radial direction of the oral irrigator 1, and the first communicating port 330 and the liquid inlet one-way valve 410 are staggered in the length direction of the oral irrigator 1.

[0107] That is to say, the first connecting port 330 is not facing the liquid inlet one-way valve 410, which prevents the functional liquid sprayed from the first connecting port 330 from directly hitting the liquid inlet one-way valve 410, reduces the impact force on the liquid inlet one-way valve 410, reduces the probability of damage to the liquid inlet one-way valve 410, and extends the service life of the liquid inlet one-way valve 410.

[0108] In addition, the functional liquid may have a certain viscosity. When the functional liquid is not mixed with the aqueous liquid, the viscosity of the functional liquid is relatively high. Therefore, if the functional liquid sprayed from the first connecting port 330 directly hits the liquid inlet check valve 410, it will cause the viscosity between the various parts of the liquid inlet check valve 410 to increase, which is not conducive to the liquid inlet check valve 410 changing its own shape, affecting the opening and closing of the liquid inlet check valve 410, and further affecting the normal operation of the pump body 400.

[0109] Therefore, by making the first connecting port 330 not face the liquid inlet one-way valve 410, the functional liquid sprayed out of the first connecting port 330 is first mixed with the water in the infusion path 300, and then passes through the liquid inlet one-way valve 410. The concentration of the functional liquid in the mixed liquid is reduced, and the viscosity of the mixed liquid is reduced, thereby preventing the functional liquid from being too viscous and affecting the switching of the liquid inlet one-way valve 410, thereby ensuring the normal operation of the liquid inlet one-way valve 410.

[0110] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0111] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A water flosser, characterized in that: include: A nozzle having a liquid spraying port; A water tank connected to the liquid spraying port via a liquid infusion flow path; A pump body, arranged in the infusion flow path, used for pumping the water in the water tank to the liquid spraying port through the infusion flow path; A functional liquid box, comprising a box body and a damping piston, wherein the damping piston is movably disposed in the box body and divides the space in the box body into a first cavity and a second cavity, wherein the first cavity contains functional liquid, and the first cavity is connected to the infusion flow path through a first connecting flow path; When the pump body drives the liquid in the infusion flow path to flow, the pressure in the second cavity is greater than the pressure in the first cavity, and the pressure difference between the second cavity and the first cavity drives the damping piston to squeeze the space in the first cavity, so that the functional fluid flows to the infusion flow path through the first connecting flow path.

2. The oral rinser according to claim 1, characterized in that: The infusion flow path is provided with a first communication port and a second communication port, the first cavity is connected to the first communication port through the first communication flow path, and the second cavity is connected to the second communication port through the second communication flow path; Wherein, on the infusion flow path, the pump body is located upstream of the second communication port, and the first communication port is located downstream of the second communication port; or On the infusion flow path, the first communication port is located upstream of the pump body, and the pump body is located upstream of the second communication port.

3. The oral rinser according to claim 2, characterized in that: Also includes: a throttle valve, disposed in the infusion flow path and located downstream of the second communication port; Wherein, when the first communication port is located downstream of the second communication port, the throttle valve is located upstream of the first communication port.

4. The oral rinser according to claim 2, characterized in that: The infusion flow path includes a throttling section, and the second communication port is arranged upstream of the throttling section; Wherein, when the first communicating port is located downstream of the second communicating port, the throttling section is located upstream of the first communicating port.

5. The oral rinser according to claim 2, characterized in that: In the extending direction of the infusion channel, the first communication port and the second communication port are both arranged to be spaced apart from the nozzle.

6. The oral rinser according to claim 1, characterized in that: Also includes: a liquid outlet pipe detachably connected to the nozzle, the pump body comprising a first shell and a second shell, the first shell and the second shell being connected to each other and clamping the liquid outlet pipe to fix the relative position between the pump body and the liquid outlet pipe, the liquid outlet pipe defining a part of the infusion flow path; Wherein, the liquid outlet pipe is provided with a first communication port, and the first cavity is connected with the first communication port through the first communication flow path; and / or The liquid outlet pipe is provided with a second communication port, and the second cavity is communicated with the second communication port through a second communication flow path.

7. The oral rinser according to claim 1, characterized in that: The functional liquid tank and the infusion flow path are arranged along the radial direction of the oral irrigator; In the radial direction of the water flosser, a first communication port is provided on a side of the infusion flow path facing the functional liquid tank, and the first cavity is connected to the first communication port through the first communication flow path; and / or In the radial direction of the water flosser, a second communication port is provided on a side of the infusion flow path facing the functional liquid tank, and the second cavity is communicated with the second communication port through a second communication flow path.

8. The oral irrigator according to claim 1, characterized in that: The infusion flow path is provided with a second communication port, the second cavity is connected with the second communication port through the second communication flow path, and the second communication port is located downstream of the pump body; The dental flosser also includes: The liquid outlet one-way valve is arranged in the liquid infusion flow path and located between the pump body and the second communication port, allowing the liquid in the pump body to flow to the second communication port and preventing the liquid in the second communication port from flowing to the pump body.

9. The oral rinser according to claim 1, characterized in that: The infusion flow path is provided with a second communication port, the second cavity is connected with the second communication port through the second communication flow path, and the second communication port is located downstream of the pump body; The dental flosser also includes: The anti-backflow one-way valve is arranged in the second communicating flow path, allowing the liquid in the infusion flow path to flow to the second cavity through the second communicating flow path, and preventing the liquid in the second cavity from flowing to the infusion flow path through the second communicating flow path.

10. The oral rinser according to claim 1, characterized in that: The infusion flow path is provided with a first communication port, and the first cavity is connected with the first communication port through the first communication flow path; The second cavity is in communication with the atmosphere, and the first communication port is located upstream of the pump body on the infusion flow path.

11. The oral rinser according to claim 10, characterized in that: The functional liquid tank and the infusion flow path are arranged along the radial direction of the oral irrigator; In the radial direction of the oral irrigator, the first communication port is located on a side of the infusion flow path facing the functional liquid tank.

12. The oral rinser according to claim 10, characterized in that: The first cavity and the second cavity are arranged along the length direction of the oral irrigator, and the first cavity is closer to the water tank than the second cavity.

13. The oral rinser according to claim 10, characterized in that: The second cavity is connected to the atmosphere through an air inlet, and the air inlet is provided with a waterproof and breathable membrane.

14. The oral rinser according to claim 1, characterized in that: The first cavity and the second cavity are arranged along the length direction of the oral irrigator, and the infusion flow path extends along the length direction of the oral irrigator.

15. The oral rinser according to claim 1, characterized in that: The first cavity and the second cavity are arranged along the radial direction of the oral irrigator; In the length direction of the oral irrigator, the first cavity is connected to the first connecting flow path on one side facing the water tank.

16. The oral rinser according to claim 1, characterized in that: Also includes: A connecting joint is provided with a first interface, a second interface and a third interface. The first interface, the second interface and the third interface are connected to each other, the first interface is connected to the liquid inlet of the pump body, the second interface is connected to the first cavity, and the third interface is connected to the water tank.

17. The oral rinser according to claim 16, characterized in that: The connecting joint is connected to the liquid inlet of the pump body.

18. The oral rinser according to claim 16, characterized in that: Also includes: The liquid inlet one-way valve is arranged in the infusion flow path, allowing the water in the water tank to flow to the pump body and preventing the liquid in the pump body from flowing to the water tank. The liquid inlet one-way valve is located downstream of the first interface and upstream of the pump body.

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