TWM645256U - Improved structure of breather valve - Google Patents

Abstract

An improved structure of a breathable valve, including a body and a cap. The center of the body is provided with a through hole, and is formed with a seat portion and a tube portion. The breathable hole is provided with a breathable film fused to the body to prevent Water vapor and dust in the air pass through the ventilation hole. The cap can be combined with the seat and has a supporting portion protruding from the inner bottom surface, so that a gas supply can be formed between the cap and the seat. The gap for circulation allows the breather valve to provide waterproof and dustproof breathability when installed on the equipment cover. The improved glue-free design makes the overall structure more stable and improves durability.

Description

Improved ventilation valve structure

This invention relates to a breathable valve used for equipment casing, especially an improvement in the structure of the breathable valve that has both waterproof and dustproof functions.

Generally, precision equipment is often equipped with a shell to improve the protective effect and ensure that the internal body can be used longer. In order to solve problems such as internal and external ventilation, heat dissipation, and pressure difference adjustment, in the past, ventilation holes were often provided in the shell or left There is a gap for ventilation, but since it is unavoidable to prevent small dust and water droplets from entering the interior and damaging the device body, the author of this case developed a waterproof and dustproof breathable valve structure in the early years, and filed the Republic of China Patent Application No. 100217832. This breathable valve has the effect of allowing incoming and outgoing gases to pass through the waterproof, dustproof and breathable element to prevent dust and moisture from entering the interior.

However, the creators have found in practical applications in recent years that although the aforementioned waterproof, dustproof and breathable valves can help the equipment maintain performance and extend its life, the adhesive used to assist in fixing the waterproof, dustproof and breathable components cannot be used in certain special application environments. Degumming will inevitably occur, such as when used in an environment with a high oil and gas content. It is easily corroded by oil and gas and degummed, which in turn affects its waterproof and dustproof performance, causing the breathable valve to fail to achieve the expected effect or service life. In view of this, the creation People continue to delve into ways of improvement, and through continuous attempts and experiments, they complete original creations.

The main purpose of this creation is to provide an improved structure of the breathable valve. Through the integrated structural design of the breathable membrane fused to the body, it can effectively avoid the corrosion, degumming and other problems that may occur after the conventional separate structure is reinforced with adhesive; and through The structure of the rubber-free breathable valve has been improved, making the whole unit more stable and durable for use in diverse environments.

Another purpose of this creation is to simplify the unnecessary structure of the previous ventilation valve, optimize the overall performance and save the cost of manufacturing mold opening.

In order to achieve the above purpose, the structure of the ventilation valve of this invention is improved. The main structural features and technical means adopted are a body and a cap. The body is provided with a through ventilation hole in the center, and is formed with a ventilating hole surrounding the ventilation hole. There is a seat part and a tube part around it, wherein the seat part is located at one end of the tube part and has a surface away from the tube part, and the seat part is provided with a joined part on the opposite two sides, and the ventilation hole It is provided with a breathable film fused to the body, and the breathable film can prevent moisture and dust in the air from passing through the breathable hole; the diameter of the cap opening is larger than that of the seat, and is used to cover the seat , wherein the cap is provided with a coupling portion at a position relative to each coupled portion, and the coupling portion can be coupled to the coupled portion, so that the cap can be coupled, fixed, and covered with the seat; and, The cap is provided with at least one supporting portion protruding from the inner bottom surface. When the cap is combined with the seat, the supporting portion can be used to push against the front side of the seat so that the cap and the seat can be There is a gap for gas circulation.

In a preferred embodiment, the breathable membrane is located at one end of the breathable hole close to the seat; the seat is provided with a plurality of notches on the side for gas in the internal gap to circulate with the outside; and the joint part and The joined parts are respectively a latching groove and a latching convex block.

According to the above structure, the protruding supporting parts of the cap can be plural, and these supporting parts The parts are in the shape of arcs and are arranged symmetrically or at intervals around positions corresponding to the ventilation holes.

Furthermore, in actual application, the pipe part can be fixed on a predetermined shell by combining a fixing nut, and the pipe part is provided with external threads on the outside, and the fixing nut is provided with internal threads on the inside. .

In order to gain a more detailed understanding of the above-mentioned functional purposes and technical features of this invention, the preferred embodiments of this invention are described as follows along with the accompanying drawings:

10:Ontology

11: Breathing holes

12: Breathable membrane

13:Zabu

131: The combined part

132: concave notch

14:convex part

15: Management Department

151: External thread

20:Cap

21:hat mouth

22:joint part

23: Support part

30:Fixing nut

31: Internal thread

40:Waterproof gasket

50: Shell cover

Figure 1 is a schematic diagram of the appearance of the combination of the cap and the body according to the preferred embodiment of this invention.

Figure 2 is an exploded schematic diagram of the components of the preferred embodiment of the present invention.

Figure 3 is an exploded schematic diagram of components from another perspective of the preferred embodiment of the present invention.

Figure 4 is a schematic cross-sectional view of the combination of the cap and the body according to the preferred embodiment of this invention.

Figure 5 is a schematic diagram of components assembled according to the preferred embodiment of this invention.

Figure 6 is a schematic cross-sectional view of the preferred embodiment of the invention after being assembled on the housing.

Figure 7 is a schematic diagram of the airflow path from another cross-sectional view after the preferred embodiment of the invention is assembled on the casing.

Please refer to Figures 1 to 4, which are schematic diagrams of a preferred embodiment of the structural improvement of the ventilation valve of this invention. Its main components include a body 10 and a cap 20.

Among them, the main body 10 is mainly in the shape of a pipe column, with a central The through-ventilation hole 11 runs through the whole body, and a hexagonal seat portion 13 is formed at one end, and is connected to a tube portion 15 extending to the other end. The seat portion 13 is formed with an outwardly protruding convex portion near the tube portion 15 . The portion 14 allows the main body 10 to be connected to the outside through the ventilation holes 11 to achieve a ventilation effect when the main body 10 is installed on the device casing. In this embodiment, the body 10 is provided with a breathable membrane 12 for waterproofing and dustproof at one end of the vent hole 11 close to the seat 13. The breathable membrane 12 is melted into the body 10 through high-frequency processing. An integrated structure fused to the main body 10 is formed, and is formed in a manner that can diaphragm the breathable hole 11, so that the gas flowing through can be affected by the breathable membrane 12, thereby preventing moisture in the air and The effect of dust passing through the ventilation hole 11.

The cap 20 mainly has the same shape as the seat 13 and has a diameter slightly larger than the cap opening 21 of the seat 13. It is used to cover the seat 13 and cover the ventilation hole 11. One side.

The cap 20 is provided with a coupling part 22 on two opposite sides respectively, and the seat part 13 is also provided with a coupled part 131 on the two opposite sides respectively. When the cap 20 is calcium-bonded to the body 10, As shown in FIG. 4 , the coupling portion 22 can be coupled to the coupled portion 131 , so that the cap 20 can be coupled and covered on the seat portion 13 , and the relative position between the two can be fixed. In a feasible embodiment, the coupling portion 22 is a latching groove, and the coupled portion 131 is a latching protrusion.

In this embodiment, the cap 20 is provided with a plurality of supporting portions 23 protruding from the inner bottom surface. The supporting portions 23 can resist the seat 13 when the cap 20 is combined with the seat 13 . The surface away from the side of the tube part 15 allows a gap for gas circulation to be formed between the cap 20 and the seat part 13 (please refer to Figure 3, Figure 6 and Figure 7); wherein, the supporting portions 23 The appropriate number and distribution position can be configured according to needs to provide support and gas convection effects. In this implementation In this example, the supporting portions 23 are designed to be symmetrically or spaced in an arc shape corresponding to the surrounding position of the ventilation hole, so as to form a more stable supporting effect.

Furthermore, the seat 13 can be provided with a plurality of concave notches 132 on the side, whereby a more specific gap can be formed between the concave notches 132 and the periphery of the cap opening 21 of the cap 20 (as shown in Figure 7). This allows the gas in the internal gap of the cap 20 to circulate with the outside more conveniently.

In actual application, as shown in Figures 5 to 7, the system can be equipped with a fixing nut 30, or a waterproof gasket 40, and the tube 15 of the body 10 is penetrated and fixed on the casing 50 of the equipment; Among them, the pipe part 15 can be equipped with external threads 151 on the outer side, and the fixing nut 30 can be equipped with internal threads 31 on the inner edge. During installation, the pipe part 15 can be passed through the shell 50 from the outside, and the waterproof gasket 40 is set between the protruding part 14 and the shell 50 to keep the seat 13 and the cap 20 in the shell. On the outer side of the cover 50, the pipe portion 15 is screwed through the fixing nut 30 from the inner side of the cover 50, so that the entire vent valve can be fastened to the cover 50, through the vent hole 11, the cap 20 and the seat 13. The gap forms an air flow path for gas to circulate, and through the internal horizontal breathable membrane 12, the gas entering and exiting the breathable hole 11 must pass through the breathable membrane 12 to achieve the effect of blocking external water vapor and dust from entering, and thus can Ensure the stability of equipment operation and improve service life.

In summary, the above descriptions are only descriptions of the preferred embodiments of this invention. Any extensions, modifications, simple changes or equivalent substitutions made based on the technical means of this invention should also fall within the scope of the patent application of this invention.

10:Ontology

11: Breathing holes

12: Breathable membrane

13:Zabu

131: The combined part

132: concave notch

14:convex part

15: Management Department

151: External thread

20:Cap

Claims (6)

An improvement in the structure of a breathable valve, including: a body with a through-hole in the center, and a seat and a tube around the vent, wherein the seat is located at one end of the tube, And has a surface away from the tube part, and the seat part is provided with a joined part on the opposite sides respectively, and the ventilation hole is provided with a breathable film fused to the body, and the breathable film can prevent Water vapor and dust pass through the ventilation hole; a cap with a cap opening diameter larger than the seat is used to cover the seat, wherein the cap is provided with a coupling part at a position relative to each of the coupled parts, and The combining part can be combined with the joined part, so that the cap can be combined and fixed and covered with the seat; in addition, the cap is protruding with at least one supporting part on the inner bottom surface, which is used for the cap When the seat is combined, the supporting portion can be used to push against the front side of the seat, so that a gap for gas circulation is formed between the cap and the seat. The structural improvement of the breathable valve as claimed in claim 1, wherein the breathable film is located at an end of the breathable hole close to the seat. The structural improvement of the ventilating valve as described in claim 2, wherein the protruding supporting portions of the cap are plural, and the supporting portions are in an arc shape and are symmetrically or spaced around the corresponding ventilating valve. location around the hole. The structural improvement of the breathable valve as described in claim 3, wherein the seat is provided with a plurality of notches on the side for gas in the internal gap to communicate with the outside. The structural improvement of the breathable valve as claimed in claim 4, wherein the coupling part is a latching groove, and the coupled part is a latching convex block. The structural improvement of the ventilation valve as described in claim 5, wherein the outer side of the pipe portion is provided with an external thread for coupling with a fixed nut having an internal thread.

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