Water pick

Abstract

The utility model discloses an oral irrigator which comprises a pump body, an oral irrigator body, an oral irrigator body and an oral irrigator body. The pump body is provided with a liquid outlet and a liquid inlet; the nozzle is provided with a liquid spraying opening, and the liquid spraying opening is communicated with the liquid outlet through a liquid outlet flow path; the water tank is communicated with the liquid inlet, and water liquid in the water tank is pumped into the pump body from the liquid inlet, pumped out of the pump body from the liquid outlet and pumped to the liquid spraying opening through the liquid outlet flow path; the functional liquid tank is communicated with the liquid outlet flow path, negative pressure is formed when liquid in the liquid outlet flow path flows to suck functional liquid in the functional liquid tank into the liquid outlet flow path, and the functional liquid in the functional liquid tank and water liquid in the water tank are mixed in the liquid outlet flow path to form mixed liquid to be sprayed out from the liquid spraying opening. The oral irrigator is good in oral cavity cleaning effect and has the advantages of being small in number of parts and simple in structure.

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 provided with other boxes outside the water tank for storing liquids such as mouthwash to enable the water flossers to achieve more functions, the boxes are usually connected to the water tank to adjust the composition ratio of the liquid in the water tank, and the liquid delivery efficiency in the boxes is low. Utility Model Content

[0004] The purpose of the present application is to provide a water flosser which has a good oral cleaning effect and has the advantages of fewer parts and a simple structure.

[0005] In order to achieve the above-mentioned purpose, an embodiment of the present application provides a water flosser, comprising: a pump body, provided with a liquid outlet and a liquid inlet; a nozzle, provided with a liquid spray port, the liquid spray port and the liquid outlet being connected via a liquid outlet flow path; a water tank, connected with the liquid inlet, the water in the water tank is pumped into the pump body from the liquid inlet, pumped out of the pump body from the liquid outlet, and pumped to the liquid spray port through the liquid outlet flow path; a functional liquid tank, connected with the liquid outlet flow path, when the liquid in the liquid outlet flow path flows, a negative pressure is formed to suck the functional liquid in the functional liquid tank into the liquid outlet flow path, and the functional liquid in the functional liquid tank is mixed with the water in the water tank in the liquid outlet flow path to form a mixed liquid, which is then sprayed out from the liquid spray port.

[0006] In some embodiments of the present application, the oral irrigator further includes: a liquid outlet one-way valve, arranged in the liquid outlet flow path, allowing the liquid in the pump body to flow toward the liquid spray port, and preventing the liquid in the liquid spray port from flowing toward the pump body; wherein, the liquid outlet flow path is provided with a connecting port, the connecting port is connected to the functional liquid tank, and in the extension direction of the liquid outlet flow path, the connecting port is located downstream of the liquid outlet one-way valve.

[0007] In some embodiments of the present application, the nozzle, the pump body and the water tank are arranged sequentially along the length direction of the water flosser; in the length direction of the water flosser, at least a portion of the functional liquid tank is closer to the nozzle relative to the pump body.

[0008] In some embodiments of the present application, the water tank and the nozzle are arranged at two ends of the length direction of the water flosser, and the functional liquid tank and the nozzle are arranged at the same end of the length direction of the water flosser.

[0009] In some embodiments of the present application, in the length direction of the water flosser, the functional liquid tank is located between the pump body and the nozzle, and a medicine outlet is provided on one side of the functional liquid tank close to the water tank, and the medicine outlet is connected to the liquid outlet flow path.

[0010] In some embodiments of the present application, in the radial direction of the water flosser, the medicine outlet is located on a side of the functional liquid tank close to the liquid outlet flow path.

[0011] In some embodiments of the present application, the liquid outlet flow path is provided with a communication port, and the communication port is communicated with the liquid outlet flow path; in the extension direction of the liquid outlet flow path, the communication port and the nozzle are spaced apart.

[0012] In some embodiments of the present application, the liquid outlet flow path includes a mixing area, the liquid outlet flow path is provided with a connecting port, the connecting port is connected to the functional liquid tank, the mixing area extends from the connecting port to the liquid spray port, and the size of the mixing area in the extension direction of the liquid outlet flow path is not less than 5 mm.

[0013] In some embodiments of the present application, the liquid outlet flow path is provided with a connecting port, the connecting port is connected to the functional liquid tank, and the cross-sectional area of ​​the liquid outlet flow path at the connecting port is larger than the cross-sectional area of ​​the rest of the liquid outlet flow path.

[0014] In some embodiments of the present application, the oral irrigator also includes: a first pipe connected to the pump body; a second pipe connected to the first pipe and the nozzle, respectively, and the first pipe, the second pipe and the nozzle define the liquid outlet flow path; wherein the inner diameter of at least a portion of the second pipe is larger than the inner diameter of the first pipe and the inner diameter of the nozzle, and the at least a portion of the second pipe is connected to the functional liquid tank.

[0015] In some embodiments of the present application, the first pipeline includes a first speed-increasing section, the first speed-increasing section is connected to the second pipeline, and the inner diameter of the first speed-increasing section gradually decreases toward the direction approaching the second pipeline.

[0016] In some embodiments of the present application, the second pipe includes: a mixing section, the inner diameter of which is larger than the inner diameter of the first pipe and the inner diameter of the nozzle, the mixing section being connected to the functional liquid tank; and a second speed increasing section, respectively connected to the mixing section and the nozzle, the inner diameter of the second speed increasing section gradually decreasing in the direction away from the mixing section.

[0017] In some embodiments of the present application, the second pipe includes: a mixing section, the inner diameter of which is larger than the inner diameter of the first pipe and the inner diameter of the nozzle, the mixing section being connected to the functional liquid tank; a second speed increasing section, respectively connected to the mixing section and the nozzle, the inner diameter of the second speed increasing section first gradually decreases and then gradually increases in a direction away from the mixing section.

[0018] In some embodiments of the present application, at least a portion of the first speed increasing section is inserted into the mixing section; and at least a portion of the second speed increasing section is inserted into the nozzle.

[0019] In some embodiments of the present application, the first pipe is fixedly connected to the pump body; the first pipe and the second pipe are detachably connected; and the second pipe and the nozzle are detachably connected.

[0020] In some embodiments of the present application, the nozzle includes: a first branch path, connected to the pump body; a second branch path, connected to the functional liquid tank; a converging path, respectively connected to the first branch path, the second branch path and the liquid spraying port, the liquid in the first branch path and the liquid in the second branch path converge into the converging path, and a mixed liquid is formed in the converging path and then sprayed out from the liquid spraying port.

[0021] In some embodiments of the present application, the functional liquid tank includes: a tank body; a damping piston, which is movably disposed in the tank body and divides the space in the tank body into a first cavity and a second cavity, the first cavity is connected to the atmosphere, and the second cavity is connected to the liquid outlet flow path.

[0022] In the water flosser of the embodiment of the present application, the functional liquid and the water liquid are mixed in the liquid outlet flow path to form a mixed liquid, which is sprayed out from the liquid spray port. It can not only remove dental plaque on the tooth surface and food residues between the teeth through the impact force, but also has additional functions to kill oral bacteria, remove bad breath, keep breath fresh, and whiten teeth. In addition, the present application only has one pump body to achieve the above functions, and has the advantages of a small number of parts and a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1This is a schematic diagram of the structure of the oral irrigator according to an embodiment of the present application;

[0025] Figure 2 This is one of the cross-sectional views of the oral irrigator according to an embodiment of the present application;

[0026] Figure 3 This is the second cross-sectional view of the oral irrigator according to the embodiment of the present application;

[0027] Figure 4 This is one of the schematic diagrams of the layout of the oral irrigator according to the embodiment of the present application;

[0028] Figure 5 This is one of the schematic diagrams of the layout of the liquid outlet path of the oral irrigator according to the embodiment of the present application;

[0029] Figure 6 This is a second schematic diagram of the layout of the liquid outlet path of the oral irrigator according to an embodiment of the present application;

[0030] Figure 7 This is the second schematic diagram of the layout of the oral irrigator according to the embodiment of the present application;

[0031] Figure 8 This is a connection diagram of the oral irrigator according to an embodiment of the present application.

[0032] Description of Figure Numbers:

[0033] Water flosser 1.

[0034] The nozzle 100, the liquid spraying port 110, the first branch flow path 120, the second branch flow path 130, the converging flow path 140,

[0035] Water tank 200,

[0036] The liquid outlet passage 320, the mixing area 321, the communication port 330, the first pipe 340, the first speed increasing section 341, the second pipe 350, the mixing section 351, the second speed increasing section 352,

[0037] Pump body 400, liquid outlet check valve 440,

[0038] Functional liquid tank 500, tank body 520, damping piston 530, first cavity 540, second cavity 550, drug outlet 560,

[0039] Drug delivery channel 600,

[0040] Battery 930 and electronic control board 940 .

[0041] 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

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] The oral irrigator 1 according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0047] like Figure 1 , Figure 4 and Figure 7 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 .

[0048] The pump body 400 is provided with a liquid outlet and a liquid inlet, the nozzle 100 is provided with a liquid spray port 110, the liquid spray port 110 is connected to the liquid outlet via a liquid outlet flow path 320, the water tank 200 is connected to the liquid inlet, the water tank 200 can be used to store water, the water in the water tank 200 is pumped into the pump body 400 from the liquid inlet, is pumped out of the pump body 400 from the liquid outlet, and is pumped to the liquid spray port 110 via the liquid outlet flow path 320.

[0049] For example, Figure 2 and Figure 3As 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 liquid outlet flow path 320 from flowing back. In addition, the dental irrigator 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.

[0050] The functional liquid tank 500 is connected to the liquid outlet flow path 320. When the liquid in the liquid outlet flow path 320 flows, negative pressure is formed to suck the liquid in the functional liquid tank 500 into the liquid outlet flow path 320. The liquid in the functional liquid tank 500 and the liquid in the water tank 200 are mixed in the liquid outlet flow path 320 and then sprayed out from the liquid spray port 110. The functional liquid tank 500 contains functional liquid. The liquid in the functional liquid tank 500 and the liquid in the water tank 200 are of different types. For example, the functional liquid tank 500 can be used to store functional liquids with different functions such as mouthwash, cleaning liquid, and functional 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.

[0051] In this way, the functional liquid and the water liquid are mixed in the liquid outlet flow path 320 to form a mixed liquid, which is sprayed out from the liquid 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.

[0052] In addition, since the functional liquid tank 500 is connected to the liquid outlet flow path 320, the functional liquid in the functional liquid tank 500 flows in the liquid outlet flow path 320 toward the liquid spray port 110. Therefore, the functional liquid in the functional liquid tank 500 will not flow to the upstream pump body 400, thereby avoiding contact between the pump body 400 and the functional liquid, thereby reducing the probability of the pump body 400 being corroded by the functional liquid and extending the service life of the pump body 400.

[0053] In addition, the oral irrigator 1 in the embodiment of the present application can realize the flow of water in the water tank 200 to the liquid spray port 110, and the flow of functional liquid in the functional liquid tank 500 to the liquid spray port 110 only through the pump body 400, so that the water in the water tank 200 and the functional liquid in the functional liquid tank 500 are mixed in the liquid outlet flow path 320, without the need to additionally set up the remaining pump bodies. The oral irrigator 1 has a small number of parts, a simple structure, and low cost.

[0054] like Figure 4 and Figure 7As shown, the above-mentioned oral irrigator 1 further includes a liquid outlet check valve 440, which is arranged on the liquid outlet flow path 320. The liquid outlet check valve 440 allows the liquid in the pump body 400 to flow to the liquid spray port 110, and the liquid outlet check valve 440 prevents the liquid in the liquid spray port 110 from flowing to the pump body 400. The liquid outlet flow path 320 is provided with a connecting port 330, and the connecting port 330 is connected to the liquid outlet flow path 320. In the extension direction of the liquid outlet flow path 320, the connecting port 330 is located downstream of the liquid outlet check valve 440.

[0055] Specifically, when the pump body 400 pumps liquid to the liquid spray port 110, the liquid outlet check valve 440 is opened, and when the pump body 400 draws liquid from the water tank 200, the liquid outlet check valve 440 is closed, to prevent the liquid downstream of the water outlet check valve 440 from being sucked by the pump body 400, and the liquid downstream of the water outlet check valve 440 will not flow back into the pump body 400, thereby preventing the functional liquid from being drawn into the pump body 400, preventing the pump body 400 from being corroded by the functional liquid, and extending the service life of the pump body 400.

[0056] In addition, by setting up the liquid outlet one-way valve 440, it is possible to avoid setting up an anti-backflow structure such as a one-way valve between the functional liquid tank 500 and the liquid outlet flow path 320, thereby ensuring that the functional liquid tank 500 and the liquid outlet flow path 320 are always connected, avoiding the situation where the functional liquid cannot be sucked into the liquid outlet flow path 320 due to insufficient negative pressure in the liquid outlet flow path 320.

[0057] like Figure 4 and Figure 7 As shown, the nozzle 100, the pump body 400 and the water tank 200 are sequentially arranged along the length direction of the oral irrigator 1. In the length direction of the oral irrigator 1, at least a portion of the functional liquid tank 500 is closer to the nozzle 100 relative to the pump body 400. The portion of the functional liquid tank 500 that is closer to the nozzle 100 relative to the pump body 400 is connected to the liquid outlet flow path 320.

[0058] In this way, the length of the drug delivery flow path 600 between the functional liquid tank 500 and the liquid outlet flow path 320 can be shortened. Since the negative pressure in the liquid outlet flow path 320 is limited, the drug delivery flow path 600 is too long, resulting in a large overall flow resistance of the drug delivery flow path 600, which is not conducive to the functional liquid flowing into the liquid outlet flow path 320, or the flow rate of the functional liquid is slow, and the time required for the functional liquid to flow into the liquid outlet flow path 320 is long. By shortening the length of the drug delivery flow path 600, the flow resistance of the drug delivery flow path 600 is reduced, the convenience of the functional liquid flowing into the liquid outlet flow path 320 is improved, and the flow rate of the functional liquid is increased, the time required for the functional liquid to flow into the liquid outlet flow path 320 is reduced.

[0059] like Figure 4 and Figure 7As shown, the water tank 200 and the nozzle 100 are disposed at opposite ends of the length direction of the water flosser 1, and the water tank 200 and the nozzle 100 are disposed at the same end of the length direction of the water flosser 1. For example, when the water flosser 1 is in use, the water tank 200 and the nozzle 100 are both located at the top of the water flosser 1, and the water tank 200 is located at the bottom of the water flosser 1.

[0060] In this way, the length of the drug delivery flow path 600 between the functional liquid tank 500 and the liquid outlet flow path 320 can be shortened. Since the negative pressure in the liquid outlet flow path 320 is limited, the drug delivery flow path 600 is too long, resulting in a large overall flow resistance of the drug delivery flow path 600, which is not conducive to the functional liquid flowing into the liquid outlet flow path 320, or the flow rate of the functional liquid is slow, and the time required for the functional liquid to flow into the liquid outlet flow path 320 is long. By shortening the length of the drug delivery flow path 600, the flow resistance of the drug delivery flow path 600 is reduced, the convenience of the functional liquid flowing into the liquid outlet flow path 320 is improved, and the flow rate of the functional liquid is increased, the time required for the functional liquid to flow into the liquid outlet flow path 320 is reduced.

[0061] like Figure 4 and Figure 7 As shown, in the length direction of the water flosser 1, the functional liquid tank 500 is located between the pump body 400 and the nozzle 100, and a medicine outlet 520 is provided on one side of the functional liquid tank 500 close to the water tank 200, and the medicine outlet 520 is connected to the liquid outlet flow path 320. During the use of the water flosser 1, the functional liquid tank 500 and the nozzle 100 are usually located at the top of the water flosser 1. Under the action of gravity, the functional liquid in the functional liquid tank 500 can flow downward and enter the medicine outlet 520, so that the functional liquid in the functional liquid tank 500 can flow into the liquid outlet flow path 320 as completely as possible, thereby reducing the residual amount of the functional liquid in the functional liquid tank 500 and improving the utilization rate of the functional liquid.

[0062] like Figure 4 and Figure 7 As shown, in the radial direction of the oral irrigator 1, the medicine outlet 520 is located on the side of the functional liquid box 500 close to the liquid outlet flow path 320. In this way, the length of the medicine delivery flow path 600 between the functional liquid box 500 and the liquid outlet flow path 320 can be shortened. Due to the limited negative pressure in the liquid outlet flow path 320, the medicine delivery flow path 600 is too long, resulting in a large overall flow resistance of the medicine delivery flow path 600, which is not conducive to the functional liquid flowing into the liquid outlet flow path 320, or the flow rate of the functional liquid is slow, and the functional liquid takes a long time to flow into the liquid outlet flow path 320. By shortening the length of the medicine delivery flow path 600, the flow resistance of the medicine delivery flow path 600 is reduced, the convenience of the functional liquid flowing into the liquid outlet flow path 320 is improved, and the flow rate of the functional liquid is increased, and the time required for the functional liquid to flow into the liquid outlet flow path 320 is reduced.

[0063] like Figure 4 and Figure 7As shown, the above-mentioned liquid outlet flow path 320 is provided with a communication port 330, and the communication port 330 is connected to the functional liquid tank 500. In the extension direction of the liquid outlet flow path 320, the communication port 330 is spaced apart from the nozzle 100. Compared with setting the communication port 330 at the nozzle 100, by setting the communication port 330 upstream of the nozzle 100, the functional liquid and the water liquid have begun to mix to form a mixed liquid before flowing into the nozzle 100, and the mixed liquid flows from the communication port 330 to the liquid spraying port 110 at least through the flow channel in the nozzle 100. On the one hand, when the functional liquid and the water liquid flow to the liquid spraying port 110, they are mixed more evenly, which is conducive to ensuring the cleaning effect of the liquid sprayed from the liquid spraying port 110 on various areas of the teeth. On the other hand, when the water flosser 1 stops running, it is prevented that the functional liquid flows into the liquid outlet flow path 320 and leaks from the liquid spraying port 110 due to the temperature change and the altitude change in the environment where the water flosser 1 is located, which not only prevents the waste of the functional liquid, but also reduces the probability of the functional liquid polluting the environment.

[0064] The above-mentioned liquid outlet flow path 320 is provided with a mixing area 321, and the liquid outlet flow path 320 is provided with a communication port 330, and the communication port 330 is connected to the functional liquid tank 500. The mixing area 321 extends from the communication port 330 to the liquid injection port 110, and the size of the mixing area 321 in the extension direction of the liquid outlet flow path 320 is not less than 5mm. For example, the size of the mixing area 321 in the extension direction of the liquid outlet flow path 320 can be 5mm, 6mm, 7mm, 8mm, 9mm, 10mm.

[0065] In this way, it is possible to ensure that there is sufficient space between the connecting port 330 and the liquid spray port 110. On the one hand, the mixed liquid is more uniform when flowing to the liquid spray port 110, so as to improve the uniformity of the liquid sprayed from the liquid spray port 110, which is beneficial to ensure the cleaning effect of the liquid sprayed from the liquid spray port 110 on various areas of the teeth. On the other hand, when the water flosser 1 stops running, it can prevent the functional liquid from flowing into the liquid outlet channel 320 and leaking from the liquid spray port 110 due to changes in temperature and altitude in the environment where the water flosser 1 is located. This not only prevents the waste of functional liquid, but also reduces the probability of the functional liquid polluting the environment.

[0066] like Figure 4 and Figure 7 As shown, the above-mentioned liquid outlet flow path 320 is provided with a communication port 330, and the communication port 330 is connected to the functional liquid tank 500, and the cross-sectional area of ​​the liquid outlet flow path 320 at the communication port 330 is larger than the cross-sectional area of ​​the rest of the liquid outlet flow path 320. Since the cross-sectional area of ​​the liquid outlet flow path 320 at the communication port 330 is larger, the flow rate of the liquid in the liquid outlet flow path 320 at the communication port 330 is slower, so the functional liquid stays longer in the area near the communication port 330, and the functional liquid and the water liquid can be fully mixed in the area near the communication port 330, which is conducive to mixing the functional liquid and the water liquid to form a more uniform mixed liquid.

[0067] like Figure 4-Figure 6 As shown, the above-mentioned oral irrigator 1 includes a first pipeline 340 and a second pipeline 350. The first pipeline 340 is connected to the pump body 400, and the second pipeline 350 is connected to the first pipeline 340 and the nozzle 100 respectively. The first pipeline 340, the second pipeline 350 and the nozzle 100 define a liquid outlet flow path 320. Among them, the inner diameter of at least a part of the second pipeline 350 is larger than the inner diameter of the first pipeline 340 and the inner diameter of the nozzle 100, and at least a part of the second pipeline 350 is connected to the functional liquid tank 500.

[0068] By dividing the water outlet channel 320 into three sections, on the one hand, it is convenient to set different areas in the water outlet channel 320 to different cross-sectional areas, and the processing of the water outlet channel 320 is convenient. On the other hand, connecting the second pipe 350 with the functional liquid tank 500 can ensure that the functional liquid and the water liquid start to mix before entering the nozzle 100, thereby improving the uniformity of the mixed liquid.

[0069] like Figure 4-Figure 6 As shown, the first pipeline 340 includes a first speed increasing section 341, which is connected to the second pipeline 350, and the inner diameter of the first speed increasing section 341 gradually decreases toward the second pipeline 350. In this way, the flow rate of the liquid in the first speed increasing section 341 increases, which can increase the flow rate of the liquid in the second pipeline 350, thereby increasing the negative pressure in the second pipeline 350, so that the functional liquid flows into the second pipeline 350 more quickly.

[0070] like Figure 4-Figure 5 As shown, the second pipe 350 includes a mixing section 351 and a second speed increasing section 352. The inner diameter of the mixing section 351 is larger than the inner diameter of the first pipe 340 and the inner diameter of the nozzle 100, and the mixing section 351 is connected to the functional liquid tank 500. The second speed increasing section 352 is connected to the mixing section 351 and the nozzle 100, respectively, and the inner diameter of the second speed increasing section 352 gradually decreases in the direction away from the mixing section 351.

[0071] Since the inner diameter of the mixing section 351 is larger, the flow rate of the liquid in the mixing section 351 is slower, so the functional liquid stays longer in the mixing section 351. Connecting the mixing section 351 with the functional liquid tank 500 is conducive to mixing the functional liquid and water to form a uniform mixed liquid.

[0072] In addition, the mixed liquid continues to flow from the mixing section 351 toward the second speed increasing section 352. Since the inner diameter of the second speed increasing section 352 gradually decreases in the direction away from the mixing section 351, the flow rate of the mixed liquid gradually increases, and the impact force of the liquid sprayed from the spray port 110 is stronger, which is beneficial to the cleaning of the teeth.

[0073] like Figure 4 and Figure 6 As shown, the second pipe 350 includes a mixing section 351 and a second speed increasing section 352. The inner diameter of the mixing section 351 is larger than the inner diameter of the first pipe 340 and the inner diameter of the nozzle 100, and the mixing section 351 is connected to the functional liquid tank 500. The second speed increasing section 352 is connected to the mixing section 351 and the nozzle 100 respectively, and the inner diameter of the second speed increasing section 352 gradually decreases and then gradually increases in the direction away from the mixing section 351.

[0074] Since the inner diameter of the mixing section 351 is larger, the flow rate of the liquid in the mixing section 351 is slower, so the functional liquid stays longer in the mixing section 351. Connecting the mixing section 351 with the functional liquid tank 500 is conducive to mixing the functional liquid and water to form a uniform mixed liquid.

[0075] In addition, the mixed liquid continues to flow from the mixing section 351 toward the second speed increasing section 352. Since the inner diameter of the second speed increasing section 352 gradually decreases in the direction away from the mixing section 351, the flow rate of the mixed liquid gradually increases, and the impact force of the liquid sprayed from the liquid spray port 110 is stronger, which is beneficial to the cleaning of the teeth. The inner diameter of the second speed increasing section 352 gradually increases in the direction away from the mixing section 351, which can expand the coverage area of ​​the liquid sprayed from the liquid spray port 110, so as to achieve large-area cleaning of the teeth and avoid excessive force on local areas of the oral cavity.

[0076] like Figure 4-Figure 6 As shown, at least a portion of the first speed increasing section 341 is inserted into the mixing section 351. Thus, on the one hand, the connection strength between the first pipe 340 and the second pipe 350 can be improved, which is beneficial to improving the relative position reliability between the first pipe 340 and the second pipe 350. On the other hand, the negative pressure in the mixing section 351 is increased, thereby reducing the time for the functional liquid to flow into the mixing section 351, ensuring that the functional liquid in the mixing section 351 is sufficient.

[0077] At least a portion of the second speed increasing section 352 is inserted into the nozzle 100. In this way, on the one hand, the connection strength between the nozzle 100 and the second pipe 350 can be improved, which is conducive to improving the relative position reliability between the nozzle 100 and the second pipe 350. On the other hand, the second speed increasing section 352 is closer to the liquid spraying port 110 to increase the pressure of the liquid sprayed from the liquid spraying port 110 to ensure the cleaning effect on the teeth.

[0078] The above-mentioned first pipe 340 is fixedly connected to the pump body 400, wherein the pump body 400, the first pipe 340, the second pipe 350 and the nozzle 100 are connected in sequence, and the pump body 400 can be fixedly connected to the first pipe 340 by clamping the first pipe 340, which can improve the sealing and connection strength between the pump body 400 and the first pipe 340 to reduce the risk of liquid leakage between the pump body 400 and the first pipe 340, and the pump body 400 and the first pipe 340 are easy to assemble, which can simplify the assembly steps and improve production efficiency and later maintenance efficiency.

[0079] In addition, since the inner diameter of the first pipe 340 is not a fixed value, the inner diameter of the first pipe 340 needs to be changed, and the inner diameter of the second pipe 350 is not a fixed value, the inner diameter of the second pipe 350 needs to be changed. By detachably connecting the first pipe 340 and the second pipe 350, the processing of the first pipe 340 and the second pipe 350 is more convenient, and it is easy to demold.

[0080] In addition, the second pipe 350 and the nozzle 100 are detachably connected, which can not only ensure the communication between the second pipe 350 and the nozzle 100, but also facilitate the replacement of the nozzle 100, so as to improve the cleanliness of the oral irrigator 1 and benefit the oral health of the user.

[0081] like Figure 7 As shown, the nozzle 100 includes a first branch flow path 120 , a second branch flow path 130 and a converging flow path 140 .

[0082] The first branch path 120 is connected to the pump body 400, the second branch path 130 is connected to the functional liquid tank 500, and the converging path 140 is respectively connected to the first branch path 120, the second branch path 130 and the liquid spraying port 110. The water in the first branch path 120 and the functional liquid in the second branch path 130 converge into the converging path 140 and are sprayed out from the liquid spraying port 110.

[0083] That is to say, the water liquid in the first branch channel 120 and the functional liquid in the second branch channel 130 have little influence on each other's flow velocity and flow rate, thereby ensuring the discharge efficiency of the functional liquid in the functional liquid tank 500 , and the functional liquid and water liquid are mixed in the nozzle 100 .

[0084] like Figure 7 As shown, the above-mentioned liquid outlet path 320 extends along the length direction of the oral irrigator 1, the liquid outlet path 320 and the functional liquid tank 500 are arranged along the radial direction of the oral irrigator 1, and the first branch path 120 and the second branch path 130 are arranged along the radial direction of the oral irrigator 1, which is beneficial to reduce the space occupied by the first branch path 120 and the second branch path 130, so as to reduce the volume of the oral irrigator 1.

[0085] In addition, the second branch path 130 is closer to the functional liquid tank 500 than the first branch path 120, and the distance between the second branch path 130 and the functional liquid tank 500 is closer, which can shorten the length of the drug delivery path 600 between the second branch path 130 and the functional liquid tank 500, so that the functional liquid in the functional liquid tank 500 can flow into the second branch path 130 more quickly.

[0086] like Figure 4 and Figure 7 As shown, the functional fluid 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 the functional fluid.

[0087] 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 be maintained in the current position under the action of the above-mentioned damping force to prevent the functional fluid from leaking from the nozzle 100.

[0088] 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.

[0089] 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 in the second cavity 550 and prevent the second cavity 550 from being in a negative pressure state.

[0090] 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.

[0091] 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 pump body, provided with a liquid outlet and a liquid inlet; A nozzle, provided with a liquid spraying port, wherein the liquid spraying port is connected to the liquid outlet through a liquid outlet flow path; A water tank is connected to the liquid inlet, and the water in the water tank is pumped into the pump body from the liquid inlet, pumped out of the pump body from the liquid outlet, and pumped to the liquid spraying port through the liquid outlet flow path; A functional liquid tank is connected to the liquid outlet flow path. When the liquid in the liquid outlet flow path flows, negative pressure is formed to suck the functional liquid in the functional liquid tank into the liquid outlet flow path. The functional liquid in the functional liquid tank and the water in the water tank are mixed in the liquid outlet flow path to form a mixed liquid, which is then sprayed out from the liquid spray port.

2. The oral rinser according to claim 1, characterized in that: Also includes: a liquid outlet one-way valve, arranged in the liquid outlet flow path, allowing the liquid in the pump body to flow to the liquid spraying port, and preventing the liquid in the liquid spraying port from flowing to the pump body; The liquid outlet flow path is provided with a communication port, the communication port is communicated with the functional liquid tank, and in the extension direction of the liquid outlet flow path, the communication port is located downstream of the liquid outlet one-way valve.

3. The oral rinser according to claim 1, characterized in that: The nozzle, the pump body and the water tank are arranged in sequence along the length direction of the water flosser; In the length direction of the oral irrigator, at least a portion of the functional liquid tank is closer to the nozzle than the pump body.

4. The oral rinser according to claim 1, characterized in that: The water tank and the nozzle are arranged at two ends of the water flosser in the length direction, and the functional liquid tank and the nozzle are arranged at the same end of the water flosser in the length direction.

5. The oral rinser according to claim 1, characterized in that: In the length direction of the water flosser, the functional liquid tank is located between the pump body and the nozzle, and a medicine outlet is provided on one side of the functional liquid tank close to the water tank, and the medicine outlet is communicated with the liquid outlet flow path.

6. The oral rinser according to claim 5, characterized in that: In the radial direction of the water flosser, the medicine outlet is located on a side of the functional liquid tank close to the liquid outlet flow path.

7. The oral rinser according to claim 1, characterized in that: The liquid outlet flow path is provided with a communication port, and the communication port is communicated with the liquid outlet flow path; In the extending direction of the liquid outlet flow path, the communication port is spaced apart from the nozzle.

8. The oral irrigator according to claim 1, characterized in that: The liquid outlet flow path includes a mixing area, the liquid outlet flow path is provided with a connecting port, the connecting port is connected to the functional liquid tank, the mixing area extends from the connecting port to the liquid spray port, and the size of the mixing area in the extension direction of the liquid outlet flow path is not less than 5 mm.

9. The oral rinser according to claim 1, characterized in that: The liquid outlet flow path is provided with a communication port, the communication port is communicated with the functional liquid tank, and the cross-sectional area of ​​the liquid outlet flow path at the communication port is larger than the cross-sectional area of ​​the rest of the liquid outlet flow path.

10. The oral rinser according to claim 1, characterized in that: Also includes: a first pipeline, connected to the pump body; a second pipe, connected to the first pipe and the nozzle respectively, wherein the first pipe, the second pipe and the nozzle define the liquid outlet flow path; The inner diameter of at least a portion of the second pipe is larger than the inner diameter of the first pipe and the inner diameter of the nozzle, and the at least a portion of the second pipe is connected to the functional liquid tank.

11. The oral rinser according to claim 10, characterized in that: The first pipeline includes a first speed-increasing section, the first speed-increasing section is connected to the second pipeline, and the inner diameter of the first speed-increasing section gradually decreases toward the direction approaching the second pipeline.

12. The oral rinser according to claim 11, characterized in that: The second pipeline comprises: a mixing section, wherein the inner diameter of the mixing section is larger than the inner diameter of the first pipe and the inner diameter of the nozzle, and the mixing section is communicated with the functional liquid tank; The second speed increasing section is connected to the mixing section and the nozzle respectively, and the inner diameter of the second speed increasing section gradually decreases in a direction away from the mixing section.

13. The oral rinser according to claim 11, characterized in that: The second pipeline comprises: a mixing section, wherein the inner diameter of the mixing section is larger than the inner diameter of the first pipe and the inner diameter of the nozzle, and the mixing section is communicated with the functional liquid tank; The second speed-increasing section is connected to the mixing section and the nozzle respectively, and the inner diameter of the second speed-increasing section gradually decreases and then gradually increases in a direction away from the mixing section.

14. The oral rinser according to claim 12 or 13, characterized in that: At least a portion of the first speed increasing section is inserted into the mixing section; At least a portion of the second speed increasing section is inserted into the nozzle.

15. The oral rinser according to claim 10, characterized in that: The first pipeline is fixedly connected to the pump body; The first pipe and the second pipe are detachably connected; The second pipe and the nozzle are detachably connected.

16. The oral rinser according to claim 1, characterized in that: The nozzle comprises: A first branch flow path communicated with the pump body; A second branch path is communicated with the functional liquid tank; The confluence path is connected to the first branch path, the second branch path and the liquid spraying port respectively. The liquid in the first branch path and the liquid in the second branch path converge to the confluence path, and a mixed liquid is formed in the confluence path and then sprayed out from the liquid spraying port.

17. The oral rinser according to claim 1, characterized in that: The functional liquid tank comprises: Box; 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, the first cavity is connected to the atmosphere, and the second cavity is connected to the liquid outlet flow path.

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