A one-way valve suitable for use in a waterpik

Abstract

The utility model discloses a one -way valve suitable for oral irrigator, include: plunger cylinder, the lateral surface of plunger cylinder is linked with the water inlet channel, and the connecting place of water inlet channel and plunger cylinder is provided with the round fender that is movably connected with water inlet channel, and the top surface of plunger cylinder is linked with the water outlet channel, the mesh cover, the mesh cover is inverted and is buckled in the water outlet channel, and the mesh cover is provided with the magnetic force bead that is movably connected with the pipe mouth of plunger cylinder top surface in, the magnetic element, the magnetic element sets up in the inner wall of plunger cylinder top surface, and is connected with magnetic force bead magnetism and is inhaled, the piston, the piston sets up in plunger cylinder. The magnetic force bead of one -way valve and the magnetic attraction cooperation of magnetic element realize one -way seal, compared with traditional duckbill type one -way valve, and the rolling characteristic of magnetic force bead makes it less wear under the water flow impact, and the impact resistance and the fatigue resistance of steel ball material are better, effectively solve the problem that silica gel cutting seam is easy to age, and crack.

Description

Technical Field

[0001] This utility model relates to the field of oral care instruments, specifically a one-way valve suitable for oral irrigators. Background Technology

[0002] The duckbill-type one-way valve of a water flosser is usually made of silicone through injection molding. Its structural feature is that there is a slit in the middle of the valve body. The opening and closing of the slit enables one-way water flow: when the water flows forward, the slit is opened to allow the water to flow through; when the water flows in the opposite direction, the slit closes under the action of water pressure to prevent the water from flowing in the opposite direction.

[0003] However, this duckbill-type check valve has obvious defects in practical applications: on the one hand, the silicone material itself has limited fatigue resistance and impact resistance. Under long-term high-frequency water flow impact, the cut is prone to aging and cracking due to repeated deformation, resulting in failure of the one-way seal; on the other hand, fine impurities in the water are prone to accumulate at the cut, which not only increases the resistance when the water flows through, but also accelerates the wear and aging of the cut, further shortening the service life of the check valve.

[0004] Therefore, designing a duckbill-type check valve with high fatigue resistance and high impact resistance has become an urgent problem to be solved. Utility Model Content

[0005] The purpose of this invention is to overcome the problems of insufficient fatigue resistance and high impact resistance of the duckbill-type one-way valve in existing oral irrigators, and to provide a one-way valve suitable for oral irrigators.

[0006] To achieve the above objectives, this utility model provides a one-way valve suitable for oral irrigators, comprising:

[0007] The plunger cylinder has a water inlet channel connected to its side. A circular baffle plate that is movably connected to the water inlet channel is provided at the connection between the water inlet channel and the plunger cylinder. The top surface of the plunger cylinder has a water outlet channel.

[0008] The screen is inverted inside the water outlet channel, and a magnetic bead is installed inside the screen that is movably connected to the pipe opening on the top surface of the plunger cylinder.

[0009] Magnetic element, which is set on the inner wall of the top surface of the plunger cylinder and is magnetically connected to the magnetic bead;

[0010] The piston is located inside the plunger cylinder.

[0011] Furthermore, the diameter of the magnetic bead is larger than the diameter of the pipe on the top surface of the plunger cylinder.

[0012] Furthermore, a sealing cover is provided on the water inlet channel, and a sealing ring platform is formed by a partial outward protrusion on the side of the plunger cylinder, with the sealing cover fixedly sealing the sealing ring platform.

[0013] Furthermore, a circular baffle plate is formed on the side of the sealing ring platform near the plunger cylinder, extending locally towards the center of the ring. The circular baffle plate is either attached to or separated from the water inlet channel.

[0014] Furthermore, the diameter of the circular baffle is larger than the diameter of the water inlet channel.

[0015] Furthermore, the circular water-blocking plate is made of PVC board.

[0016] Furthermore, the inlet of the water inlet channel bends downwards and extends, forming a bent section at a 90° angle to the original water inlet channel axis.

[0017] Furthermore, the inlet of the water inlet channel faces the opposite direction to the outlet of the water outlet channel.

[0018] Furthermore, the mesh cover is threadedly connected to the water outlet channel.

[0019] Furthermore, a duckbill-shaped water outlet cap is installed above the mesh cover, and the water outlet cap is threadedly connected to the water outlet channel.

[0020] The technical advantages of this solution are as follows: One-way sealing is achieved through the magnetic attraction between magnetic beads and magnetic components. Compared to traditional duckbill-type one-way valves, the rolling characteristics of the magnetic beads result in less wear under water flow impact, and the steel beads offer superior impact resistance and fatigue resistance, effectively solving the problem of easy aging and cracking of silicone cut seams. The matching design of the circular baffle plate with the water inlet channel (diameter larger than the water inlet channel, PVC material) reliably prevents reverse water flow, ensuring orderly switching between water intake and drainage processes and improving sealing stability. The threaded connection design of the duckbill-shaped water outlet cap, mesh cover, and water outlet channel not only provides a secure fixation but also facilitates disassembly and maintenance, allowing for timely cleaning of internal impurities. The overall structural design is compact and reasonable. Through the synergistic effect of various components, the service life and operational reliability of the one-way valve are significantly improved, thereby extending the overall lifespan of the oral irrigator and better meeting users' needs for the stability of oral hygiene tools. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 A schematic diagram of the one-way valve provided by this utility model;

[0023] Figure 2 Exploded view of the one-way valve provided by this utility model;

[0024] Figure 3 A schematic diagram of the sealing cover plate of the one-way valve provided by this utility model;

[0025] Figure 4 A schematic diagram of the sealing ring platform of the one-way valve provided by this utility model;

[0026] Figure 5 The structural diagram of the one-way valve provided by this utility model;

[0027] Figure label:

[0028] 1-Plunger cylinder; 2-Inlet channel; 3-Circular baffle; 4-Outlet channel; 5-Mesh cover; 6-Magnetic bead; 7-Magnetic element; 8-Piston; 9-Sealing cover; 10-Sealing ring platform; 11-Outlet cap. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of this utility model.

[0035] In the following description, suffixes such as "module," "part," "component," or "unit" are used only for the purpose of describing this utility model and have no specific meaning in themselves. Therefore, they can be used in combination.

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0037] According to one embodiment of the present invention, such as Figures 1-5 As shown, a one-way valve suitable for a dental flosser includes:

[0038] A plunger cylinder 1 has a water inlet channel 2 connected to its side. A circular baffle 3, which is movably connected to the water inlet channel 2, is provided at the connection between the water inlet channel 2 and the plunger cylinder 1. A water outlet channel 4 is connected to the top surface of the plunger cylinder 1.

[0039] The mesh cover 5 is inverted inside the water outlet channel 4, and the mesh cover 5 is provided with a magnetic bead 6 that is movably connected to the pipe opening on the top surface of the plunger cylinder 1.

[0040] Magnetic element 7 is disposed on the inner wall of the top surface of the plunger cylinder 1 and is magnetically connected to the magnetic bead 6;

[0041] Piston 8 is disposed inside the plunger cylinder 1.

[0042] In this embodiment, the plunger cylinder 1 is injection molded from food-grade ABS material, and its inner wall is treated with a high-gloss finish to reduce water flow resistance and ensure smooth water flow. A food-grade silicone sealing ring is fitted around the edge of the piston 8, forming a tight sliding fit with the inner wall of the plunger cylinder 1 to improve sealing performance. The magnetic element 7 is a neodymium iron boron strong magnet, embedded in a pre-set groove on the inner wall of the top surface of the plunger cylinder 1, ensuring stable and long-lasting magnetic force. The magnetic beads 6 are made of 304 stainless steel, with a polished surface to reduce wear during water flow impact. The piston 8 is driven by a motor to reciprocate within the plunger cylinder 1. During operation, when the piston 8 is pulled outward, a negative pressure is created inside the plunger cylinder 1. Under this negative pressure, the circular baffle 3 separates from the water inlet channel 2, allowing external water to smoothly enter the plunger cylinder 1 through the water inlet channel 2. Simultaneously, the magnetic beads 6, under the attraction of the magnetic element 7, tightly adhere to the top opening of the plunger cylinder 1, sealing the water outlet channel 4 and preventing air from entering and affecting water absorption efficiency. When piston 8 pushes inward, the water pressure inside plunger cylinder 1 increases, and the water flow impacts magnetic bead 6, causing it to overcome magnetic attraction and detach from the pipe opening. Water is then discharged through outlet channel 4. At this time, circular baffle plate 3, under water pressure, adheres to inlet channel 2, preventing water from flowing back out and achieving a stable one-way water flow function. Compared to traditional duckbill type check valves, the rolling opening and closing of magnetic bead 6 in this structure replaces the repeated deformation of silicone slits. The impact resistance and fatigue resistance of 304 stainless steel are far superior to silicone. The use of hard material for circular baffle plate 3 also avoids the aging and cracking problem of silicone. This effectively solves the problem of short lifespan and easy failure caused by material limitations in duckbill type check valves, significantly improving the durability of check valves.

[0043] In one possible implementation, the diameter of the magnetic bead 6 is larger than the pipe diameter on the top surface of the plunger cylinder 1.

[0044] In this embodiment, the diameter of the magnetic bead 6 is 1-2 mm larger than the diameter of the pipe on the top surface of the plunger cylinder 1. This dimensional difference design ensures that the magnetic bead 6 can completely cover the pipe port, forming a complete sealing surface. When the magnetic bead 6 is attracted by the magnetic element 7, its spherical surface fits tightly against the edge of the pipe port, preventing gaps that could lead to leakage. At the same time, this dimensional design also prevents the magnetic bead 6 from accidentally falling into the pipe due to water flow impact, ensuring the stability of the one-way valve structure.

[0045] In one possible implementation, a sealing cover plate 9 is provided on the water inlet channel 2, and a sealing ring platform 10 is formed by a partial outward protrusion on the side of the plunger cylinder 1, and the sealing cover plate 9 is fixedly sealed to the sealing ring platform 10.

[0046] In this embodiment, the sealing cover 9 is made of food-grade silicone material with threaded holes on its surface, providing good elasticity and sealing performance. The sealing ring platform 10 is integrally injection molded with the plunger cylinder 1, and its surface has threaded holes communicating with the sealing cover 9. The sealing cover 9 is fixed to the sealing ring platform 10 with bolts. Alternatively, the surface of the sealing ring platform 10 can be formed into an annular groove, and the surface of the sealing cover 9 has a snap-fit ​​edge that engages with the groove. The sealing cover 9 is embedded into the groove through the snap-fit ​​edge and fixed to the sealing ring platform 10 through this snap-fit ​​structure. This design effectively enhances the sealing performance at the connection between the water inlet channel 2 and the plunger cylinder 1, preventing water leakage from gaps and ensuring that all water entering the plunger cylinder 1 participates in the rinsing process, thereby improving the water pressure efficiency of the oral irrigator.

[0047] In one possible implementation, the sealing ring platform 10 extends partially toward the center of the ring on the side near the plunger cylinder 1 to form the circular baffle 3, which is either attached to or separated from the water inlet channel 2.

[0048] In this embodiment, the circular baffle plate 3 and the sealing ring platform 10 are integrally injection molded from PP material, possessing good rigidity and toughness. The connection between the edge of the baffle plate 3 and the sealing ring platform 10 is thinned to form a slightly deformable "hinge" structure, ensuring that the baffle plate 3 can flexibly fit or separate from the water inlet channel 2. When a negative pressure is formed inside the plunger cylinder 1, the baffle plate 3 flips inward into the plunger cylinder 1 under the action of external water pressure, separating from the water inlet channel 2 and allowing water to enter; when the water pressure inside the plunger cylinder 1 increases, the baffle plate 3 flips inward towards the water inlet channel 2 under the action of internal water pressure and fits tightly, reliably preventing water from flowing backward and ensuring the stability of unidirectional water inlet.

[0049] In one possible implementation, the diameter of the circular baffle 3 is larger than the diameter of the water inlet channel 2.

[0050] In this embodiment, the diameter of the circular baffle plate 3 is 0.5-1mm larger than the diameter of the water inlet channel 2. This size design ensures that the baffle plate 3 can completely cover the port of the water inlet channel 2. When the baffle plate 3 is in contact with the water inlet channel 2 under water pressure, its edge can extend beyond the channel port by a certain distance, forming a "full coverage" seal. This effectively avoids seal failure caused by burrs or slight deformation at the edge of the channel port, further improving the reliability of reverse water blocking.

[0051] In one possible implementation, the circular water baffle 3 is a PVC board.

[0052] In this embodiment, the circular baffle 3 is made of rigid PVC material. This material has excellent water resistance, aging resistance, and a certain degree of rigidity, and is not prone to swelling, deformation, or embrittlement when immersed in water for a long time. Compared with the silicone material of traditional duckbill-type one-way valves, PVC plate has better fatigue resistance and is less prone to cracking during high-frequency bonding and separation actions, which can significantly extend the service life of the baffle 3 and is suitable for scenarios where oral irrigators are used for a long time at high frequency.

[0053] In one possible implementation, the inlet of the water inlet channel 2 bends downward to form a bent section at a 90° angle to the axis of the original water inlet channel 2.

[0054] In this embodiment, the bend in the water inlet channel 2 adopts a rounded transition design to avoid increased water flow resistance caused by sharp right angles. This 90° bend structure can effectively adapt to the compact internal space layout of the water flosser, allowing the water inlet channel 2 to be arranged along the inner wall of the water flosser housing, reducing the space occupied by other components.

[0055] In one possible implementation, the inlet of the water inlet channel 2 faces the opposite direction to the outlet of the water outlet channel 4.

[0056] In this embodiment, the inlet of water inlet channel 2 faces the interior of the water tank of the oral irrigator, while the outlet of water outlet channel 4 faces the nozzle of the oral irrigator, with the two arranged in opposite directions at 180°. This design allows the inlet and outlet water paths to form a "convection" layout inside the oral irrigator, avoiding mutual interference of water flow and reducing water resistance.

[0057] In one possible implementation, the mesh cover 5 is threadedly connected to the water outlet channel 4.

[0058] In this embodiment, the outer surface of the mesh cover 5 and the inner wall of the water outlet channel 4 are respectively provided with matching fine threads, and the thread surface is coated with food-grade sealant to enhance the sealing performance. This threaded connection structure facilitates the installation and removal of the mesh cover 5: when it is necessary to clean impurities on the surface of the magnetic bead 6 or replace the magnetic bead 6, the mesh cover 5 can be unscrewed directly for operation without disassembling the entire one-way valve; at the same time, the threaded connection has good tightness, which can prevent the mesh cover 5 from falling off during water flow impact or water flosser vibration, ensuring that the magnetic bead 6 is always confined within the mesh cover 5.

[0059] In one possible implementation, a duckbill-shaped water outlet cap 11 is also provided above the mesh cover 5, and the water outlet cap 11 is threadedly connected to the water outlet channel 4.

[0060] In this embodiment, the water outlet cap 11 is made of food-grade silicone material, and the opening width of its duckbill part is 1-2mm. The threaded connection design allows the water outlet cap 11 to be cleaned regularly or replaced as needed (such as replacing with water outlet caps of different opening sizes to adjust the water flow concentration). This effectively avoids the problem of traditional duckbill-type check valves aging and breaking due to their fixed structure and difficulty in cleaning accumulated impurities. Through regular cleaning and timely replacement, the water flow can always be kept smooth, reducing the wear of impurities on the magnetic bead and the overall check valve. Furthermore, combined with the impact-resistant characteristics of the magnetic bead, the service life of the check valve is extended.

[0061] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A check valve suitable for use in an oral irrigator, the check valve comprising: include: A plunger cylinder has a water inlet channel connected to its side, and a circular baffle plate that is movably connected to the water inlet channel is provided at the connection between the water inlet channel and the plunger cylinder. The top surface of the plunger cylinder has a water outlet channel connected to it. A mesh cover is inverted inside the water outlet channel, and a magnetic bead is provided inside the mesh cover that is movably connected to the pipe opening on the top surface of the plunger cylinder. A magnetic element is disposed on the inner wall of the top surface of the plunger cylinder and is magnetically connected to the magnetic bead. A piston, which is disposed inside the plunger cylinder.

2. A check valve suitable for use in an oral irrigator according to claim 1, wherein, The diameter of the magnetic bead is larger than the diameter of the pipe on the top surface of the plunger cylinder.

3. A one-way valve for a dental flosser according to claim 1, characterized in that, A sealing cover is provided on the water inlet channel, and a sealing ring platform is formed by a partial outward protrusion on the side of the plunger cylinder. The sealing cover is fixedly sealed to the sealing ring platform.

4. A one-way valve for a dental flosser according to claim 3, characterized in that, The sealing ring platform extends partially toward the center of the ring on the side near the plunger cylinder to form the circular baffle plate, which is either attached to or separate from the water inlet channel.

5. A one-way valve for a dental flosser according to claim 4, characterized in that, The diameter of the circular baffle is larger than the diameter of the water inlet channel.

6. A one-way valve for a dental flosser according to claim 5, characterized in that, The circular water baffle is made of PVC board.

7. A one-way valve for a dental flosser according to claim 1, characterized in that, The water inlet of the water inlet channel bends downward and extends to form a bent section at a 90° angle to the axis of the original water inlet channel.

8. A one-way valve for a dental flosser according to claim 7, characterized in that, The inlet of the water inlet channel faces the opposite direction to the outlet of the water outlet channel.

9. A one-way valve for a dental flosser according to claim 1, characterized in that, The mesh cover is threadedly connected to the water outlet channel.

10. A one-way valve for a dental flosser according to claim 1, characterized in that, A duckbill-shaped water outlet cap is also provided above the mesh cover, and the water outlet cap is threadedly connected to the water outlet channel.

Images