Waterproof ventilation valve
By using a combination design of nut connectors, step-type mounting chambers, soft rubber gaskets and waterproof and breathable films in the waterproof and breathable valve, the problem of difficulty in finding a balance between waterproof and breathable is solved in the prior art, and the effect of effectively blocking water inlet and allowing air to pass through is achieved.
Patent Information
- Application Number
- CN202422346404.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-25
AI Technical Summary
The prior art is difficult to find a balance between waterproofing and breathable, and cannot effectively block the entry of external water and allow air to pass through.
A waterproof and breathable valve is designed, using a nut connector and a step-type mounting chamber, combined with a soft rubber gasket and a waterproof and breathable film, and the ventilation holes are tightened and installed through the connector to achieve water barrier and air passage.
The design can effectively block the entry of external water, while allowing air to pass through, achieving pressure balance between the inside and outside of the equipment, and is suitable for waterproof and breathable needs of medical devices, automobile engine compartment and electronic equipment.
Smart Images
Figure CN222977510U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a waterproof and breathable valve. Background Art
[0002] In medical devices, waterproof and breathable valves can be used to protect medical equipment from moisture and bacterial contamination; in the automotive field, waterproof and breathable valves can be used to prevent equipment in the engine compartment of an automobile from getting damp and damaged; in electronic devices, waterproof and breathable valves can be used to protect circuit boards and electronic components from moisture and dust. Content of the Utility Model
[0003] In view of the above problems, the utility model aims to provide a waterproof and breathable valve that can block the entry of external water but ensure the passage of air inside and outside.
[0004] The technical solution of the utility model is a waterproof and breathable valve, which is characterized in that: it includes a nut connector, a stepped installation cavity is arranged inward on the rear end surface of the nut connector, a breathable hole communicated with the installation cavity is arranged on the side surface of the front section of the nut connector, a soft rubber gasket is arranged at the step of the installation cavity, a waterproof and breathable film is arranged outside the soft rubber gasket, the waterproof and breathable film is extruded and fastened on the outer surface of the soft rubber gasket through a connecting piece, the connecting piece is fixedly connected to the side wall of the installation cavity, and a ventilation hole is axially arranged through the connecting piece.
[0005] Preferably, the connection mode between the connecting piece and the side wall of the installation cavity is threaded connection or bonding or clamping.
[0006] Preferably, a series of micropores are arranged on the surface of the waterproof and breathable film, and the diameter of the micropores is between several hundred nanometers and dozens of micrometers.
[0007] Preferably, the outer side surface of the nut connector is an external hexagonal structure.
[0008] The waterproof and breathable valve structure of the utility model can effectively block the entry of external water and allow air to pass through. Description of the Drawings
[0009] Figure 1 is a schematic structural diagram of the utility model;
[0010] Figure 2 is Figure 1 an exploded view of;
[0011] Figure 3 is a schematic structural diagram of another perspective of the utility model;
[0012] Figure 4 is Figure 3 an exploded view of;
[0013] Figure 5 It is the top view of the present utility model;
[0014] Figure 6 is Figure 5 the sectional view along the A-A direction;
[0015] Wherein: 1 - nut connector; 2 - installation cavity; 3 - ventilation hole; 4 - soft rubber gasket; 5 - waterproof and breathable film; 6 - connecting piece; 7 - air vent hole. Specific embodiments
[0016] The present utility model will be further described in detail below with reference to the accompanying drawings.
[0017] As Figures 1 to 6 shown, the present utility model provides a waterproof and breathable valve, including a nut connector 1. A stepped installation cavity 2 is arranged inwardly at the rear end surface of the nut connector 1. A ventilation hole 3 communicating with the installation cavity 2 is arranged on the side surface of the front section of the nut connector 1. A soft rubber gasket 4 is arranged at the step of the installation cavity 2. A waterproof and breathable film 5 is arranged outside the soft rubber gasket 4. The outside of the waterproof and breathable film 5 is tightly pressed on the outer surface of the soft rubber gasket 4 through a connecting piece 6. The connecting piece 6 is fixedly connected to the side wall of the installation cavity 2. An air vent hole 7 is axially arranged through the connecting piece 6. The material of the waterproof and breathable film 5 is PTFE polytetrafluoroethylene, and the material of the soft rubber gasket 4 is HNBR hydrogenated nitrile rubber, with a temperature resistance of -25°C to 150°C.
[0018] In the above solution, the connection method between the connecting piece 6 and the side wall of the installation cavity 2 is threaded connection or bonding or clamping.
[0019] In addition, a series of micropores are arranged on the surface of the waterproof and breathable film 5, and the diameter of the micropores is between several hundred nanometers and dozens of micrometers. The pore diameter is thousands of times smaller than the diameter of water droplets, and at the same time is about 1,000 times that of gas molecules in the air. Therefore, it has the characteristic of "blocking water and allowing air to pass through".
[0020] In addition, the outer side surface of the nut connector 1 is an external hexagonal structure.
[0021] The present utility model mainly has two functions:
[0022] One is waterproofing, that is, isolating liquid water or water mist / gas from entering the equipment according to needs.
[0023] The second is that while being waterproof, it can allow gas to pass through freely to achieve pressure balance between the inside and outside of the equipment. The gas exchange process through the waterproof and breathable valve is like the equipment "breathing" according to the size of the internal and external air pressures, so it is also called a "respirator".
[0024] In addition, the present utility model adopts a miniaturized design, and the size can be made very small, saving space.
[0025] The above are only the preferred embodiments of the present utility model, and do not impose any formal restrictions on the utility model. Any simple modifications, equivalent changes or decorations made to the above embodiments based on the technical principle of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims
1. A waterproof breathable valve, characterized in that: The invention comprises a nut connector (1), wherein a stepped mounting cavity (2) is arranged inwardly on the rear end face of the nut connector (1), a vent hole (3) communicating with the mounting cavity (2) is arranged on the side face of the front section of the nut connector (1), a soft rubber gasket (4) is arranged at the step of the mounting cavity (2), a waterproof and breathable film (5) is arranged on the outside of the soft rubber gasket (4), the outer side of the waterproof and breathable film (5) is squeezed and fastened to the outer surface of the soft rubber gasket (4) through a connecting piece (6), the connecting piece (6) is fixedly connected to the side wall of the mounting cavity (2), and a vent hole (7) is arranged axially through the connecting piece (6).
2. A waterproof breathable valve according to claim 1, characterized in that: The connection between the connecting piece (6) and the side wall of the installation cavity (2) is by threaded connection, bonding or clamping.
3. The waterproof breathable valve according to claim 1, characterized in that: The surface of the waterproof and breathable film (5) is provided with a series of micropores, and the diameter of the micropores is between several hundred nanometers and several tens of micrometers.
4. The waterproof breathable valve according to claim 1, characterized in that: The outer side surface of the nut connector (1) is an external hexagonal structure.