Water faucet structure capable of being turned off and turned off instantly

Abstract

The utility model discloses an instant-closing instant-stopping faucet structure which comprises a flexible gasket, the top of the flexible gasket is provided with a buckling structure, the bottom of the flexible gasket is provided with a special-shaped structure, the thickness of the special-shaped structure decreases gradually from the center of the flexible gasket to the edge of the flexible gasket, and the top of the buckling structure is arranged towards the water outlet direction of a faucet; the water passing connector is provided with an assembly hole matched with the buckling structure, the top of the buckling structure penetrates through the assembly hole and is detachably connected with the assembly hole, and the edge of the bottom of the special-shaped structure makes contact with the inner side face of the water passing connector; the water passing connector is further provided with a water passing hole. The flexible gasket and the water passing connector are installed in a water channel, close to the water outlet, in the faucet body. According to the utility model, the elastic deformation of the specially-made flexible gasket is matched with the dynamic sealing of the water passing joint, so that the function of stopping water flow at any time is realized. The water faucet structure capable of being closed and stopped immediately does not need an electronic element or a complex transmission mechanism, the manufacturing cost is remarkably reduced, meanwhile, the sealing durability and the adaptation flexibility are improved, and the water faucet structure can be widely applied to various bathroom equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the bathroom technical field. More specifically, the utility model relates to a faucet structure that stops water as soon as the handle is turned off. BACKGROUND

[0002] Traditional faucets control water flow by rotating or pressing a valve core (such as a ceramic valve core or rubber gasket). However, such designs have the following significant problems:

[0003] Delayed closure and leakage: After the valve core is closed, a small amount of water often seeps out of the outlet due to residual water pressure in the pipeline, and the water flow needs to be completely stopped after several seconds, especially in scenarios with high water-saving needs, this defect causes waste of water resources.

[0004] Complex structure and high cost: Precise valve cores (such as ceramic valve cores) rely on high-precision machining, have high manufacturing costs, and are prone to water leakage due to impurities wear or aging of sealing elements after long-term use, requiring frequent maintenance.

[0005] Dependence on external energy: Some instant-off technologies use solenoid valves or electronic induction devices, which require additional power support, not only increasing energy consumption, but also limiting their application in environments without electricity or low-cost scenarios.

[0006] In recent years, some improved instant-off faucets have appeared on the market, such as using spring-assisted sealing or quick-closing valve structures, but still have the following shortcomings:

[0007] Spring fatigue: Long-term compression can easily cause elastic decay, leading to sealing failure;

[0008] High water flow resistance: Complex waterway design affects water flow rate, resulting in decreased user experience;

[0009] Poor adaptability: The structure is difficult to miniaturize, and cannot be adapted to top-spray showers, handheld sprayers, and other types of bathroom products.

[0010] To address the above problems, there is an urgent need for a purely mechanical, low-cost, and highly reliable instant-off faucet structure that not only effectively solves the water leakage problem of traditional faucets, saves water resources, but also significantly reduces manufacturing costs, improves sealing durability and adaptability, and can be widely used in various bathroom equipment in homes, businesses, and public facilities. SUMMARY

[0011] An object of the utility model is to solve at least the above problems and / or defects, and provide at least the advantages to be explained later.

[0012] The purpose of this invention is to provide an instant-stop faucet structure. Addressing the numerous drawbacks of traditional instant-stop faucet solutions, this invention develops a simple, purely mechanical, low-cost, and highly reliable instant-stop faucet structure. Through innovative design, it abandons the traditional valve core structure and utilizes the elastic deformation of a specially designed flexible gasket and the dynamic sealing of the water inlet to achieve the instant-stop function. This instant-stop faucet structure eliminates the need for electronic components or complex transmission mechanisms, significantly reducing manufacturing costs while improving sealing durability and adaptability. It can be widely applied to various bathroom fixtures in homes, commercial facilities, and public utilities.

[0013] To achieve the objectives and other advantages of this utility model, a faucet structure that allows for immediate shut-off is provided, comprising:

[0014] The flexible gasket has a snap-fit ​​structure at the top and an irregularly shaped structure at the bottom with decreasing thickness from the center to the edge. The top of the snap-fit ​​structure is positioned facing the direction of the water outlet of the faucet.

[0015] A water-passing connector is provided with an assembly hole adapted to a snap-fit ​​structure. The top of the snap-fit ​​structure passes through the assembly hole and is detachably connected to the assembly hole. The bottom edge of the irregular structure contacts the inner surface of the water-passing connector. The water-passing connector is also provided with a water-passing hole.

[0016] The flexible gasket and the water-passing connector are installed in the water channel inside the faucet body and near the water outlet.

[0017] Preferably, the assembly hole is located at the center of the water-passing connector, and multiple water-passing holes are evenly distributed around the assembly hole.

[0018] Preferably, the fastening structure has a chamfer, which is an arc or a 30-60 degree angle, and the top diameter of the fastening structure is 1.5-3 mm smaller than the bottom diameter.

[0019] Preferably, the flexible gasket is a silicone rubber gasket or a nitrile rubber gasket.

[0020] Preferably, the thickness of the irregular structure is 2 to 8 mm in the middle and 0.5 to 3 mm at the edge.

[0021] Preferably, the diameter of the assembly hole is 5 to 12 mm.

[0022] Preferably, the inner surface of the water-passing connector is provided with a sealing layer with a surface roughness of 1.6 to 3.2 μm.

[0023] Preferably, an inner thread is arranged in the water channel of the faucet body and at the connecting position of the water passing connector, the water passing connector is provided with an outer thread matched with the inner thread, and a sealing ring is arranged at the connecting position of the inner thread and the outer thread.

[0024] The utility model discloses still a kind of bathroom products, it includes immediate stop faucet structure.

[0025] The utility model at least includes following beneficial effects:

[0026] First, the immediate stop faucet structure discards traditional valve core structure, the elastic deformation of specially-made flexible gasket is added in the internal pipeline of faucet and water passing connector, the dynamic sealing cooperation of both is utilized, when opening faucet, due to water pressure effect, rubber gasket side edge is automatically opened, and water passes, in addition, because of the characteristics of thick middle and thin edge and the buckling structure is buckled in the assembly hole of water passing connector, flexible gasket only edge deformation, and it will not block bubbler, and it will not affect normal water outlet;When faucet is closed, water pressure is close to 0, due to the elastic automatic reset characteristics of flexible gasket, the edge of this flexible gasket and water passing connector will be automatically closed, play the role of isolation, make the water remaining in the internal pipeline of flexible gasket above faucet unable to seep out, realize the effect of immediate stop.

[0027] Second, the structure of the immediate stop faucet structure is simple, cost is extremely low, function is stable, service life is long, and it is also convenient for maintenance and replacement.

[0028] Third, the immediate stop faucet structure is widely applied, and can be popularized on various bathroom products, not only used on faucet, but also applied to top flower shower, shower head and the like.

[0029] Other advantages, objects and features of the utility model will be embodied partly through the following description, and some will be understood by those skilled in the art through research and practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the structure diagram of flexible gasket in the immediate stop faucet structure of one embodiment of the utility model;

[0031] Figure 2 It is the sectional view of flexible gasket in the immediate stop faucet structure of another embodiment of the utility model;

[0032] Figure 3 It is the structure diagram of water passing connector in the immediate stop faucet structure of one embodiment of the utility model;

[0033] Figure 4 It is the sectional view of water passing connector in the immediate stop faucet structure of one embodiment of the utility model;

[0034] Figure 5 Figure 1 is a schematic diagram of the installation position of the immediate stop faucet structure in the faucet pipeline (without water) according to an embodiment of the present application;

[0035] Figure 6 Figure 2 is a schematic diagram of the structure of the immediate stop faucet structure in the faucet pipeline (after water is turned on) according to an embodiment of the present application;

[0036] Figure 7 Figure 3 is a schematic diagram of the structure of the immediate stop faucet structure in the faucet pipeline (after water is turned off) according to an embodiment of the present application;

[0037] Reference signs: 1: flexible gasket, 100: buckling structure, 110: special-shaped structure, 120: chamfer, 2: water passing joint, 200: assembly hole, 210: water passing hole, 220: sealing layer, 3: faucet elbow, 4: faucet internal waterway, 5: bubbler shell, 6: bubbler inner container. DETAILED DESCRIPTION

[0038] The present application will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement the present application according to the description.

[0039] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0040] It should be noted that in the description of the present application, the orientations or positional relationships indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] It should be noted that the control method in the following technical solution is a conventional method unless otherwise specified, and the device structure can be obtained from commercial channels unless otherwise specified.

[0042] As Figures 1-7 , the present application provides an immediate stop faucet structure, comprising:

[0043] The flexible gasket 1 is provided with a buckling structure 100 at the top, the special-shaped structure is provided with a special-shaped structure 110 with decreasing thickness from the center to the edge of the flexible gasket 1 at the bottom, and the top of the buckling structure 100 is arranged towards the water outlet direction of the faucet;

[0044] The water connector 2 has an assembly hole 200 that is adapted to the fastening structure 100. The top of the fastening structure 100 passes through the assembly hole 200 and is detachably connected to the assembly hole 200. The bottom edge of the irregular structure 110 contacts the inner side of the water connector 2. The water connector 2 is also provided with a water passage hole 210.

[0045] The flexible gasket 1 and the water connector 2 are installed in the water channel inside the faucet body and near the water outlet.

[0046] In the above technical solution, the materials selected are as follows: Flexible gasket 1: Food-grade silicone rubber is used to make the flexible gasket 1. This material has good elasticity, water resistance, and corrosion resistance, meeting the hygiene standards for faucets in contact with water. It ensures that it will not pollute the water quality during long-term use, and its excellent elasticity ensures that the gasket can effectively seal and open when the water pressure changes. Water connector 2: Stainless steel is used to make the water connector 2. Stainless steel has high strength and is not easy to rust, ensuring that the water connector can work stably for a long time in the humid environment of the faucet, avoiding structural damage or affecting the sealing performance due to rust, and can also withstand the erosion of water flow.

[0047] Design and Fabrication: Flexible Gasket 1: The flexible gasket 1 is generally circular. Its top snap-fit ​​structure 100 is designed as an outwardly protruding annular retaining ring. The outer diameter of the retaining ring is slightly larger than the inner diameter of the mounting hole 200 on the water connector 2, forming an interference fit. This ensures that the snap-fit ​​structure 100 can be tightly engaged in the mounting hole 200, achieving a detachable connection. The bottom irregular structure 110 has a linearly decreasing thickness from the center to the edge, with a center thickness of 8 mm and an edge thickness of 3 mm. It is manufactured using a mold in one piece to ensure uniform thickness variation. Water Connector 2: The water connector 2 is a cylindrical structure with a mounting hole 200 at its center. The mounting hole 200 is circular, and its diameter is precisely designed according to the dimensions of the snap-fit ​​structure 100 of the flexible gasket 1, with tolerances controlled within ±0.1 mm to ensure fitting accuracy. The water connector 2 has four circular water passage holes evenly distributed on its pipe wall. Each hole has a diameter of 5 mm and the number of holes is 4. These holes are used to allow water to flow smoothly through the water connector 2. The inner surface of the water connector 2 is finely polished, and the surface roughness is controlled at Ra=1.6 μm to ensure good contact with the bottom edge of the irregular structure 110 of the flexible gasket 1 and achieve a reliable seal.

[0048] Installation process: as follows Figure 6As shown, align the snap-fit ​​structure 100 of the fabricated flexible gasket 1 with the assembly hole 200 of the water connector 2, and press firmly vertically to allow the annular retaining ring of the snap-fit ​​structure 100 to engage with the assembly hole 200 through interference fit, completing the initial assembly of the flexible gasket 1 and the water connector 2. Place the assembled flexible gasket 1 and water connector 2 into the water channel near the water outlet of the faucet body. Position them using the positioning groove on the water channel wall and the positioning protrusion on the outer surface of the water connector 2 to ensure accurate installation. Then, use sealant to seal the connection between the water connector 2 and the water channel wall to prevent water leakage. Insert the aerator inner tank 6 (including multi-layer filter screen and air-water mixing structure) into the outlet end of the water connector 2, connecting it to the water connector 2 through the threads or clips at the bottom of the inner tank; tighten or press until the limiting shoulder of the inner tank 6 fits against the end face of the water connector 2, ensuring no axial gap. Fit the aerator outer shell 5 onto the outside of the inner tank 6, aligning the guide groove on the inner wall of the outer shell with the guide rib on the outer wall of the inner tank; rotate the outer shell 5 clockwise (or press it in) until the latch of the outer shell 5 engages with the groove on the outer edge of the faucet outlet, producing a "click" sound to indicate that it is in place. Install an O-ring (made of NBR rubber) between the outer shell 5 and the faucet outlet to prevent external water leakage; turn on the faucet to test the water flow, observe whether the aerator produces uniform water and the aerator mixes the bubbles effectively, and check for leaks at all joints.

[0049] Working process: Open state: When the faucet is turned on, water flows into the water channel of the faucet body, and the water pressure acts on the flexible gasket 1. Due to the irregular structure 110 at the bottom of the flexible gasket 1 being thicker in the center and thinner at the edges, under the action of water pressure, its edge part will open outward, allowing water to flow out from both sides of the irregular structure 110 through the water passage hole 210 on the water passage connector 2. The water flow position is as follows: Figure 6 As indicated by the middle arrow, water flows out of the faucet outlet. Simultaneously, because the snap-fit ​​structure 100 of the flexible gasket 1 is engaged in the assembly hole 200 of the water connector 2, the displacement of the flexible gasket 1 is restricted, preventing it from being washed away under the impact of water flow. Only the edges undergo elastic deformation, preventing blockage of the water passage or affecting normal water flow. When the faucet is closed, the water pressure in the waterway rapidly drops to near zero. At this time, the flexible gasket 1 automatically resets itself due to the elasticity of its silicone rubber material, and the bottom edge of the irregular structure 110 tightly adheres to the inner surface of the water connector 2, automatically closing with the water connector 2. This acts as an isolation mechanism, preventing residual water in the faucet's internal pipes above the gasket from seeping out, achieving an immediate shut-off effect.

[0050] Maintenance and Care Recommendations: Inspect the flexible gasket 1 and the water inlet connector 2 periodically (recommended every 3-6 months) for wear, aging, or damage. If any problems are found, replace them promptly to ensure proper faucet operation and the effectiveness of the instant-off function. Clean the inside of the faucet regularly (monthly) using a mild detergent to remove impurities and limescale, preventing buildup that could affect the normal operation of the flexible gasket 1 and the water inlet connector 2. Take care to avoid scratching the surfaces of the flexible gasket 1 and the water inlet connector 2 during cleaning.

[0051] Functional Verification and Testing: Sealing Test: Under 0.8 MPa overpressure, after closing the faucet and observing for 10 minutes, no leakage was observed; after cyclic opening and closing tests (10,000 cycles), the wear on the sealing surface was <0.1 mm. Durability Test: After high-temperature aging (80 degrees Celsius, 500 hours), the hardness change of the rubber gasket was ≤5 HA, with no cracks; after alternating cold / hot water (5–80 degrees Celsius) impact tests, the structure showed no deformation. Water Flow Performance: Under 0.3 MPa standard water pressure, the flow rate was ≥12 L / min, and the water flow noise was <45 dB(A).

[0052] Application scenarios: Household basin faucets: compatible with standard 4-point interfaces, water completely stops within 1 second after the faucet is turned off; Public bathroom overhead showers: increase the flow rate by increasing the number of water passage holes (12 holes) to meet the needs of multiple users; Kitchen spray guns: optimize the edge thickness of the gasket to 0.8 mm to enhance the response speed under high frequency opening and closing.

[0053] In another technical solution, the assembly hole 200 is located at the center of the water connector 2, and a plurality of water holes 210 are evenly distributed around the assembly hole 200.

[0054] In the above technical solutions, such as Figure 3 As shown, the water-passing connector 2 is cylindrical in shape, with its outer diameter matching the inner diameter of the faucet's internal water channel 4 at the faucet bend 3. Its height is 20 mm. The mounting hole 200, located at the center of the water-passing connector 2, is circular with a diameter of 8.2 mm and a depth of 6 mm. It is designed to fit the flexible gasket with an interference fit (0.2 mm) to ensure the flexible gasket is securely installed on the water-passing connector. Four water-passing holes 210 are evenly distributed around the mounting hole 200. Each water-passing hole has a diameter of 5 mm, and the distance from the center of the hole to the center of the mounting hole is 10 mm. These water-passing holes allow water to flow through, and their even distribution ensures uniform water flow within the water-passing connector, reducing water flow resistance.

[0055] In another technical solution, the fastening structure 100 is provided with a chamfer 120, which is an arc or a 30-60 degree angle, and the top diameter of the fastening structure 100 is 1.5-3 mm smaller than the bottom diameter.

[0056] In another technical solution, such as Figure 2 As shown, this is a cross-sectional view of the flexible gasket 1 in another embodiment. The flexible gasket 1 is generally disc-shaped, and the fastening structure 100 is located at the top of the flexible gasket, with a trapezoidal cross-section. The top diameter is determined to be 10 mm, and the bottom diameter is 12 mm, with a difference of 2 mm. The top two ends are connected to the bottom two ends to form a chamfer 120, with the chamfer 120 being 30 to 60 degrees. This design helps the fastening structure to be smoothly inserted into the assembly hole of the water connector and achieve a stable connection.

[0057] In another technical solution, the flexible gasket is a silicone rubber gasket or a nitrile rubber gasket.

[0058] In the aforementioned technical solutions, silicone rubber gaskets and nitrile rubber gaskets each possess unique properties in instant-off faucet devices and are suitable for different applications. Silicone rubber gaskets excel in heat resistance, aging resistance, and hygiene, making them suitable for environments with high requirements in these areas; nitrile rubber gaskets, on the other hand, have advantages in oil resistance and sealing performance, making them more suitable for applications that may come into contact with oily substances and require stringent sealing. In practical applications, the choice can be made based on the specific application scenario and needs.

[0059] I. Characteristics of silicone rubber gaskets:

[0060] 1) Excellent heat resistance: Silicone rubber has excellent heat resistance, maintaining stable physical properties in high-temperature environments. Its operating temperature range is typically between -50℃ and 250℃, and some specially formulated silicone rubbers can even withstand higher temperatures. This characteristic allows silicone rubber gaskets to maintain good elasticity and sealing performance even when exposed to hot water from faucets, preventing rapid aging, deformation, or loss of sealing effect due to high temperatures, effectively extending the gasket's service life.

[0061] 2) Excellent aging resistance: In natural environments, silicone rubber exhibits strong resistance to ozone, ultraviolet radiation, and weathering. Even after prolonged exposure to air, its properties change slowly, and it is not prone to cracking, hardening, or other aging phenomena. This means that faucets using silicone rubber gaskets can reliably maintain their shut-off function even after prolonged use and environmental impact, reducing leaks caused by gasket aging and lowering maintenance costs.

[0062] 3) Hygiene and Environmental Protection: Silicone rubber is a non-toxic and harmless material that meets food hygiene and safety standards. In faucet applications where it frequently comes into contact with water, silicone rubber gaskets will not release harmful substances into the water, ensuring safe and hygienic water use. This characteristic makes it particularly suitable for homes, hospitals, food processing plants, and other places with high water quality requirements.

[0063] 4) High elasticity and low compression set: Silicone rubber has excellent elasticity, allowing it to quickly return to its original shape after being compressed by external force. Simultaneously, it has a low compression set, meaning that even after prolonged compression, it maintains its good shape and sealing performance after the pressure is removed. In faucet shut-off devices, the gasket is frequently subjected to water pressure and mechanical compression. These properties of silicone rubber ensure that the gasket fits tightly every time the faucet is opened and closed, effectively preventing leakage and maintaining the stable operation of the device.

[0064] 5) Good electrical insulation performance: Although electrical insulation performance is not a critical factor in faucet applications, the good electrical insulation properties of silicone rubber make it suitable for some special occasions (such as environments where faucets are related to electrical equipment), increasing its application flexibility. However, silicone rubber gaskets also have some disadvantages, such as relatively low tensile strength and poor oil resistance. They may swell when in contact with oily substances, affecting sealing performance.

[0065] II. Characteristics of Nitrile Rubber Gaskets:

[0066] 1) Outstanding oil resistance: Nitrile rubber exhibits excellent resistance to oils, a significant characteristic that distinguishes it from silicone rubber. It resists the erosion of various mineral oils, lubricating oils, fuel oils, etc., and is not prone to swelling, deformation, or damage in oily environments. If the faucet is located in an environment where it may come into contact with oily substances, such as near a kitchen faucet where cooking oil may splash, using nitrile rubber gaskets can ensure stable gasket performance, maintain a good seal, and prevent oil leakage.

[0067] 2) Excellent sealing performance: Nitrile rubber possesses high tensile strength and good abrasion resistance, making it excellent in sealing applications. It can tightly conform to the sealing surface, effectively filling tiny gaps and uneven areas, preventing liquid and gas leakage. In faucet shut-off devices, nitrile rubber gaskets, with their excellent sealing performance, ensure that water flow is completely blocked when the faucet is turned off, achieving the instant shut-off function and reducing the occurrence of leaks.

[0068] 3) Good chemical corrosion resistance: In addition to oil resistance, nitrile rubber also has a certain degree of resistance to many chemicals, and can resist the corrosion of some weak acids, weak alkalis and organic solvents. This allows nitrile rubber gaskets to maintain stable performance in faucet use scenarios where they may come into contact with chemical cleaners or other chemicals, thus extending the service life of the gaskets.

[0069] 4) High cost-effectiveness: Compared to some high-performance rubber materials, nitrile rubber (NBR) has a relatively low cost and high cost-effectiveness. While meeting sealing performance requirements, using NBR gaskets can reduce production costs. This advantage is particularly significant for large-scale production of instant-off faucet devices, helping to improve the product's market competitiveness. However, NBR has poor cold resistance, easily hardening and becoming brittle in low-temperature environments, leading to a decrease in sealing performance. Its heat resistance is also inferior to silicone rubber, with an operating temperature range generally between -20℃ and 120℃, limiting its application in high-temperature environments.

[0070] In practical applications, the environment in which a faucet operates may change over time. For example, a kitchen faucet may initially primarily come into contact with water, but later, due to kitchen renovations or changes in usage habits, it may frequently come into contact with oil. To address this dynamic change, environmental changes can be detected. For instance, sensors can be installed near the faucet to monitor the presence of oily substances in real time. Using an optically based oil sensor, once the oil concentration exceeds a set threshold, a signal is transmitted via Bluetooth or Wi-Fi to the user's mobile app or smart home system. Upon receiving the alert, the user can choose to replace the gasket based on the actual situation. If the faucet is frequently exposed to oil, the silicone rubber gasket should be replaced with a nitrile rubber gasket. If it only occasionally comes into contact with oil, it can be replaced during regular maintenance, or a special protective coating can be applied to the silicone rubber gasket to enhance its oil resistance. A maintenance record should be established for each faucet, recording information such as gasket replacement time and material. Combining sensor data and usage time, algorithms can predict the gasket's lifespan and performance changes, sending early replacement warnings to the user to ensure the faucet is always in good working order.

[0071] In another technical solution, the thickness of the irregular structure 110 is 2 to 8 mm in the middle and 0.5 to 3 mm at the edge.

[0072] In the above technical solution, specifically, the thickness of the irregular structure 100 in the middle is 5 mm to provide structural support for the flexible gasket 1, and the thickness at the edge is 1.2 mm to ensure the elastic deformation sensitivity of the flexible gasket 1. The irregular structure 110 is linearly thinned from the middle to the edge at a 15° cone angle to avoid stress concentration. When the faucet is turned on, the water pressure (0.2-0.6 MPa) acts on the bottom of the gasket, and the edge elastically deforms outward, allowing water to flow smoothly through the water passage hole. When the faucet is turned off, after the water pressure disappears, the rubber elasticity causes the edge to return to its original position and fit against the sealing surface of the inner wall of the connector, completely blocking residual water and achieving "instant shut-off".

[0073] In another technical solution, the diameter of the assembly hole is 5 to 12 mm.

[0074] In the above technical solution, specifically, the assembly hole 200 is located at the center of the water connector 2. It is a circular hole with a diameter of 8.2 mm and a depth of 6 mm, which is compatible with the snap-fit ​​structure of the flexible gasket. The two adopt an interference fit (interference amount of 0.2 mm) to ensure that the flexible gasket can be firmly installed on the water connector.

[0075] In another technical solution, the inner side of the water connector 2 is provided with a sealing layer 220 with a surface roughness of 1.6 to 3.2 μm.

[0076] In the above technical solution, the water connector 2 is made of H62 brass rod (copper content 60%~63%), which has excellent corrosion resistance and machinability. Rough machining: The brass rod is machined into a water connector blank using a CNC lathe, with an inner diameter allowance of 0.1~0.2 mm; Cleaning: An ultrasonic cleaner (frequency 40 kHz) is used to remove cutting oil and metal chips; Deburring: The inner hole edge is polished with a nylon brush to ensure that the surface is free of sharp corners.

[0077] Processing technology of sealing layer 220: Sandblasting: Equipment: pneumatic sandblasting machine (working pressure 0.5~0.7 MPa); Abrasive: alumina abrasive (particle size 80~120 mesh), sandblasting distance 150~200 mm, sandblasting time 30~45 seconds; Roughness control: by adjusting the sandblasting pressure and time, the surface roughness of the inner surface reaches Ra 2.0±0.4 μm (within the range of 1.6~3.2μm). Nickel plating (optional to enhance corrosion resistance): Process: electroplating nickel, plating thickness 5~8 μm; Parameters: current density 3 A / dm², plating solution temperature 50~55℃, pH value 4.0~4.5; Roughness verification: after plating, the roughness test shows that the Ra value change is <0.2 μm, still meeting the 1.6-3.2 μm requirement. Key Parameters and Testing Methods: Roughness Testing: Equipment: Portable surface roughness meter (e.g., Mitutoyo SJ-210), measurement mode: Ra value; Testing Points: Select 3 equidistant points along the inner side of the water connector, measure 3 times circumferentially, and take the average value; Acceptance Criteria: Ra value is within the range of 1.6~3.2 μm, and the deviation of a single point is ≤±0.3 μm. Sealing Verification: Test Conditions: After assembling the water connector 2 and the flexible gasket 1, apply a water pressure of 0.8 MPa, close the faucet to simulate static pressure; Judgment Criteria: No leakage within 10 minutes, and no visible wear marks on the contact surface between the gasket edge and the sealing layer. Process Optimization and Quality Control: Sandblasting Parameter Adjustment: If the roughness is too low (Ra<1.6μm): Increase the sandblasting time to 50 seconds or reduce the sandblasting distance to 100 mm; If the roughness is too high (Ra>3.2 μm): Replace with finer abrasive grains (120~150 mesh) or reduce the sandblasting pressure to 0.4 MPa. Coating Compatibility: For higher corrosion resistance, electroless nickel plating (electrolytic plating) can be used, resulting in better coating uniformity and less impact on surface roughness. Application Examples: Household kitchen faucets: 12 mm inner diameter water inlet, Ra 2.5 μm after sandblasting, 6 μm nickel plating thickness; post-assembly testing shows residual water seepage <0.1 mL / min when closed. Commercial overhead showerheads: Increased water inlet inner diameter to 20 mm, sandblasting process adjusted to Ra 1.8 μm to ensure reliable sealing under low pressure; after 10,000 cycles, no significant wear was observed on the sealing surface (Ra value change <0.1 μm).

[0078] This embodiment uses sandblasting to precisely control the roughness of the inner surface of the water connector, combined with nickel plating to enhance corrosion resistance. The process parameters can be flexibly adjusted to adapt to the performance requirements of different bathroom products, and it combines high sealing performance, durability and economy.

[0079] In another technical solution, the faucet body has an internal thread in the water channel 4 inside the faucet bend 3 and at the connection position with the water connector 2. The water connector 2 has an external thread that matches the internal thread, and a sealing ring is provided at the connection between the internal thread and the external thread.

[0080] In the above technical solution, the faucet bend 3 and the faucet internal water channel 4 are made of H62 brass casting, with precision polished inner walls (roughness Ra≤1.6 μm). The diameter of the faucet internal water channel 4 is 12 mm; the internal thread specification is G1 / 2 (ISO 228 standard), the thread length is 8 mm, and the pitch is 1.814 mm, located at the outlet end of the faucet internal water channel 4. The water connector 2 is made of brass plated with nickel (plating thickness 5 μm), with an external thread specification of G1 / 2, matching the internal thread of the faucet internal water channel 4; the external thread is machined by CNC lathe, with a thread tolerance grade of 6H and a lead error ≤0.05 mm; the sealing groove design involves machining an annular sealing groove (width 1.5 mm, depth 1.2 mm) at the root of the thread for installing a sealing ring. Sealing ring: material: fluororubber (FKM), temperature range -20°C to 200°C, water pressure ≥1.6MPa; dimensions: cross-sectional diameter 2.4 mm (filling the sealing groove gap after compression). Internal thread machining of faucet internal water channel 4: Use a G1 / 2 tap (HSS material) to tap the outlet end of faucet internal water channel 4 to a depth of 10 mm; Thread inspection: Verify tolerance using a thread go / no-go gauge (GO / NO-GO gauge) to ensure that the water connector 2 can be screwed in smoothly. External thread machining of water connector 2: CNC lathe to machine the external thread, with the thread pitch diameter tolerance controlled within ±0.02 mm; Nickel plating treatment (5 μm thickness) on the thread surface to enhance corrosion resistance. Sealing ring installation: Embed the fluororubber sealing ring into the sealing groove of water connector 2, ensuring no twisting or damage; Apply a small amount of silicone-based grease (food grade) to reduce assembly friction. Threaded connection assembly: Align water connector 2 with the internal thread of faucet internal water channel 4, manually pre-tighten 3-4 turns to ensure thread alignment; Use a torque wrench (set value 15 N·m) to tighten water connector 2 until the sealing ring compression reaches 30%-40%; Check whether the sealing ring is evenly exposed in the sealing groove, without local extrusion or breakage. Sealing Verification and Testing: Static Water Pressure Test: Apply 1.6 MPa water pressure to the internal water channel 4 of the assembled faucet and maintain it for 30 minutes; Passing Criteria: No leakage at the threaded connection, no displacement or deformation of the sealing ring. Hot and Cold Cycle Test: Alternately pass 5°C cold water and 80°C hot water (15 minutes each), cycle 100 times; Passing Criteria: No hardening or expansion of the sealing ring, no loosening at the threaded connection. Durability Test: Simulate frequent opening and closing (500 times per day), continuously test for 30 days; Passing Criteria: Sealing ring wear <0.1mm, no slippage of the threaded fit. Auxiliary Optimization Measures: Double Sealing Design (Optional): Add an O-ring (material EPDM) to the end face of the water connector 2 to form redundant protection with the threaded seal; the O-ring compression is controlled at 20%~25% to avoid excessive deformation. Thread loosening prevention treatment: Apply low-strength threadlocker (such as Loctite 222) to the thread engagement section to prevent loosening caused by vibration; the adhesive can be softened by heating (120°C) during disassembly for easy maintenance.

[0081] Application Examples

[0082] Household basin faucet: Water pipe with 3 internal threads G1 / 2, water inlet connector 2 with matching external threads, after assembly, it passes the 0.8MPa water pressure test; after 1 year of alternating hot and cold use, the hardness change of the sealing ring is ≤5 Shore A, and there is no leakage.

[0083] Commercial kitchen faucet: It adopts a double sealing design, with an O-ring and a threaded sealing ring, which can withstand frequent high-temperature and high-pressure flushing; the pressure test has been improved to 2.0 MPa, and the sealing performance still meets the standards.

[0084] Conclusion: This solution achieves a highly efficient sealing connection between the water connector 2 and the internal water channel 4 of the faucet through precision thread machining, optimization of the fluororubber sealing ring, and rigorous assembly processes, while also possessing pressure resistance, temperature resistance, and long service life. Key process parameters (such as torque control and sealing ring compression) can be adapted to different application scenarios, ensuring the reliability of the "instant shut-off" faucet under complex operating conditions.

[0085] This utility model also provides a bathroom product, which includes the aforementioned instant-off faucet structure. The bathroom product can be any type of bathroom product such as a faucet, a shower head, or a spray head.

[0086] Although the technical solution of this utility model has been disclosed above, it is not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A faucet structure that allows for immediate shut-off, characterized in that: include: The flexible gasket has a snap-fit ​​structure at the top and an irregularly shaped structure at the bottom with decreasing thickness from the center to the edge. The top of the snap-fit ​​structure is positioned facing the direction of the water outlet of the faucet. A water-passing connector is provided with an assembly hole adapted to a snap-fit ​​structure. The top of the snap-fit ​​structure passes through the assembly hole and is detachably connected to the assembly hole. The bottom edge of the irregular structure contacts the inner surface of the water-passing connector. The water-passing connector is also provided with a water-passing hole. The flexible gasket and the water-passing connector are installed in the water channel inside the faucet body and near the water outlet.

2. The instant-off faucet structure as described in claim 1, characterized in that, The assembly hole is located at the center of the water connector, and multiple water holes are evenly distributed around the assembly hole.

3. The instant-off faucet structure as described in claim 1, characterized in that, The fastening structure has a chamfer, which is an arc or a 30-60 degree angle. The top diameter of the fastening structure is 1.5-3 mm smaller than the bottom diameter.

4. The instant-off faucet structure as described in claim 1, characterized in that, The flexible gasket is a silicone rubber gasket or a nitrile rubber gasket.

5. The instant-off faucet structure as described in claim 1, characterized in that, The thickness of the irregular structure is 2 to 8 mm in the middle and 0.5 to 3 mm at the edge.

6. The instant-off faucet structure as described in claim 2, characterized in that, The diameter of the assembly hole is 5-12 mm.

7. The instant-off faucet structure as described in claim 1, characterized in that, The inner surface of the water connector is provided with a sealing layer with a surface roughness of 1.6 to 3.2 μm.

8. The instant-off faucet structure as described in claim 1, characterized in that, The faucet body has an internal thread inside the water channel and at the connection point with the water connector. The water connector has an external thread that matches the internal thread, and a sealing ring is provided at the connection between the internal thread and the external thread.

9. A bathroom product, characterized in that, Includes the instant-off faucet structure as described in any one of claims 1 to 8.

Images