Breathable valve convenient to weld

Abstract

The utility model relates to a ventilation valve convenient to weld, which comprises a valve body assembly, a ventilation film and a repair welding gasket, the valve body assembly comprises a valve cover and a base, and the valve cover and the base are fixed by welding; a diaphragm cavity is formed in the valve cover, and a positioning groove is formed in the base; an air hole is formed in the valve cover at the upper end of the die cavity, and a vent hole matched with the air hole is formed in the base; the breathable film is fixedly mounted between the valve cover and the base, and the breathable film can be matched with the diaphragm cavity; and the repair welding gasket is bonded with the breathable film through a high-temperature-resistant glue layer, and the repair welding gasket can be matched with the positioning groove. According to the utility model, the gas-permeable membrane with the repair welding gasket is adopted, so that the phenomena of over-welding and weld penetration of the gas-permeable membrane in the laser welding process can be avoided, the processing stability is improved, and the yield is improved; the structure is simple and processing is easy.

Description

Technical Field

[0001] The utility model belongs to the technical field of vent valves, in particular to a vent valve which is easy to weld. Background Art

[0002] As one of the core components of a car, the car's onboard computer needs to have a waterproof and breathable outer shell to prevent the hot steam generated by internal heat from liquefying after cooling, thus avoiding the adverse effects of liquid on the electronic components.

[0003] Breathable valves with waterproof and breathable functions came into being. However, at present, the breathable membranes of breathable valves are mostly implanted inside the breathable valves using ultrasonic welding technology. During the welding process, over-welding and welding through are prone to occur, resulting in a high defective product rate. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the utility model provides a ventilation valve that is easy to weld.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A vent valve convenient for welding, comprising:

[0007] The valve body assembly includes a valve cover and a base, and the valve cover and the base are fixed by welding; the valve cover is provided with a diaphragm cavity, and the base is provided with a positioning groove; the valve cover at the upper end of the diaphragm cavity is provided with an air vent, and the base is provided with an air vent that can cooperate with the air vent;

[0008] A breathable membrane, the breathable membrane is fixedly installed between the valve cover and the base, and the breathable membrane can cooperate with the diaphragm cavity;

[0009] The repair welding gasket is bonded to the breathable membrane by using a high temperature resistant glue layer, and the repair welding gasket can cooperate with the positioning groove.

[0010] Preferably, pins are evenly distributed on the outer circumference of the lower end of the base.

[0011] Preferably, the lower ends of the pins are respectively provided with outwardly protruding blocks.

[0012] Preferably, the breathable membrane has a waterproof function.

[0013] Preferably, the breathable membrane is made of PTFE material, and the material of the repair welding gasket is the same as that of the breathable membrane.

[0014] Preferably, a mounting hole is provided at the lower end of the valve cover, and a fixing boss capable of cooperating with the mounting hole is provided at the upper end of the base.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The utility model adopts a breathable membrane with a repair welding washer, which can avoid the phenomenon of over-welding and welding through of the breathable membrane during the laser welding process, improve processing stability, and increase the yield rate; the structure is simple and easy to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the valve cover structure of the present utility model.

[0019] Figure 3 This is a schematic diagram of the base structure of the present utility model.

[0020] Figure 4 for Figure 1 A in the enlarged view.

[0021] In the figure: 2, valve cover; 3, base; 4, diaphragm cavity; 5, positioning groove; 6, air vent; 7, vent; 8, breathable membrane; 9, repair welding gasket; 10, high temperature resistant glue layer; 11, pin; 12, clamping block; 13, mounting hole; 14, fixing boss. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] This embodiment provides a vent valve that is easy to weld, including a valve body assembly, a vent membrane 8, and a repair welding gasket 9. The valve body assembly provides installation space for other parts, and the vent membrane 8 has the function of making the vent valve waterproof and breathable.

[0024] like Figure 1-Figure 4 As shown:

[0025] The valve body assembly includes a valve cover 2 and a base 3, and the valve cover 2 and the base 3 are fixed by welding; a diaphragm cavity 4 is opened on the valve cover 2, and the diaphragm cavity 4 is used to install a breathable membrane 8;

[0026] A positioning groove 5 is provided on the base 3, which is convenient for fixing the repair welding washer 9;

[0027] The valve cover 2 at the upper end of the diaphragm cavity 4 is provided with an air hole 6, and the base 3 is provided with an air hole 7 that can cooperate with the air hole 6. Air can pass through the air hole 6 and the air hole 7 to pass through the air valve;

[0028] The breathable membrane 8 is fixedly installed between the valve cover 2 and the base 3. The breathable membrane 8 can cooperate with the diaphragm cavity 4. The shape and size of the breathable membrane 8 are adapted to the diaphragm cavity 4, which is convenient for welding and fixing;

[0029] A repair welding gasket 9 is bonded to the breathable membrane 8 with a high-temperature resistant glue layer 10, and the repair welding gasket 9 can cooperate with the positioning groove 5; during the assembly process of the breathable valve, the breathable membrane 8 needs to be welded between the valve cover 2 and the base 3 by laser welding. During the welding process, over-welding is likely to occur, and the breathable membrane 8 is welded through. At this time, the repair welding gasket 9 can protect the breathable membrane 8 and fill the welded part.

[0030] Furthermore, pins 11 are evenly distributed on the outer circumference of the lower end of the base 3, and the pins 11 facilitate the installation of the valve body assembly in the external seat hole.

[0031] Furthermore, the lower ends of the pins 11 are respectively provided with outwardly protruding blocks 12, and the blocks 12 are used to fix the valve body assembly so that it will not escape from the external seat hole.

[0032] Furthermore, the breathable membrane 8 has a waterproof function.

[0033] Furthermore, the breathable membrane 8 is made of PTFE material, and the material of the repair welding gasket 9 is the same as that of the breathable membrane 8. The repair welding gasket 9 made of the same material can better repair the breathable membrane 8.

[0034] The lower end of the valve cover 2 is provided with a mounting hole 13 , and the upper end of the base 3 is provided with a fixing boss 14 that can cooperate with the mounting hole 13 .

[0035] Working principle: When assembling the present invention, the breathable membrane 8 and the repair welding gasket 9 are first bonded with the high-temperature resistant glue layer 10, and then the breathable membrane 8 is placed in the diaphragm cavity 4. Thereafter, the fixing boss 14 of the base 2 is inserted into the mounting hole 13 of the valve cover 2 (the positioning groove 5 is aligned with the repair welding gasket 9), and then the breathable membrane 8 is fixed to the valve cover 2 and the base 3 by laser welding; during the welding process, the repair welding gasket 9 can prevent over-welding and avoid welding through the breathable membrane 8.

[0036] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A vent valve that is easy to weld, comprising: The valve body assembly includes a valve cover and a base, and the valve cover and the base are fixed by welding; the valve cover is provided with a diaphragm cavity, and the base is provided with a positioning groove; the valve cover at the upper end of the diaphragm cavity is provided with an air vent, and the base is provided with an air vent that can cooperate with the air vent; A breathable membrane, the breathable membrane is fixedly installed between the valve cover and the base, and the breathable membrane can cooperate with the diaphragm cavity; The repair welding gasket is bonded to the breathable membrane by using a high temperature resistant glue layer, and the repair welding gasket can cooperate with the positioning groove.

2. A vent valve that is easy to weld according to claim 1, characterized in that: Pins are evenly distributed on the outer circumference of the lower end of the base.

3. A vent valve that is easy to weld according to claim 2, characterized in that: The lower ends of the pins are respectively provided with outwardly protruding blocks.

4. The vent valve that is easy to weld according to claim 1, characterized in that: The breathable membrane has a waterproof function.

5. The vent valve that is easy to weld according to claim 1, characterized in that: The breathable membrane is made of PTFE material, and the material of the repair welding gasket is the same as that of the breathable membrane.

6. The vent valve that is easy to weld according to claim 1, characterized in that: The lower end of the valve cover is provided with a mounting hole, and the upper end of the base is provided with a fixing boss that can match with the mounting hole.

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