Gas pressure control structure

Abstract

The utility model discloses a gas pressure control structure which comprises a gas conveying pipe, a pressure regulating valve diaphragm, a pressure regulating spring and a bottom shell. The air delivery pipe is fixed at the upper end of the bottom shell; an air inlet hole is formed in the air conveying pipe, and a plurality of air outlet holes communicated with the air inlet hole are formed in the air conveying pipe; the air inlet is communicated with an external air source, and air is supplied to the air inlet through the external air source; a buffer cavity is formed in the gas conveying pipe; the upper end of the buffer cavity is communicated with the air inlet hole, and a positioning block is fixed between the upper end of the buffer cavity and the air inlet hole; the outer edge of the pressure regulating valve diaphragm is hermetically fixed with the air delivery pipe at the lower end of the buffer cavity; the interior of the pressure regulating valve diaphragm is propped against the lower end of the positioning block; the upper end of the pressure regulating spring is connected with the pressure regulating valve diaphragm, the lower end of the pressure regulating spring is connected with the bottom shell, and gas pressure regulation is performed through downward movement of the interior of the pressure regulating valve diaphragm; according to the pressure regulating valve, gas pressure can be effectively regulated through ascending or descending of the interior of the diaphragm of the pressure regulating valve, and the service life of the gas delivery pipe is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure control, in particular to a gas pressure control structure. Background Art

[0002] After years of rapid development, the automobile industry has become a common means of transportation for people's lives, work and travel, and its economic size has become an important pillar of the national economy. In order to improve the comfort of the car, some car seats are equipped with air bag inflation massage to facilitate massage of the occupants. At present, multiple air bags are often connected to the same gas pipe through solenoid valves. When several solenoid valves are suddenly closed, the gas pressure on the gas pipe at the front end of the solenoid valve may increase suddenly, which may cause damage to the gas pipe and even cracking, greatly shortening the service life of the gas pipe. Utility Model Content

[0003] The utility model aims to provide a gas pressure control structure. When several solenoid valves are suddenly closed and no gas supply is needed, the gas pressure in the gas pipe increases, which can drive the pressure regulating valve diaphragm to move downward, so that part of the gas enters the buffer chamber, thereby preventing the gas pressure in the gas pipe from increasing suddenly. When the solenoid valve is opened again, the gas in the air inlet is provided to the air bag through the air outlet for inflation, and the air pressure in the gas pipe decreases. The pressure regulating spring can drive the pressure regulating valve diaphragm to move upward, and due to the positioning effect of the positioning block, the pressure regulating valve diaphragm will not continue to rise to block the air inlet, so that the gas pressure can be effectively regulated and the service life of the gas pipe can be increased.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A gas pressure control structure, comprising an air supply pipe, a pressure regulating valve diaphragm, a pressure regulating spring and a bottom shell; the air supply pipe is fixed to the upper end of the bottom shell; an air inlet is arranged in the air supply pipe, and a plurality of air outlets connected with the air inlet are arranged on the air supply pipe; the air inlet is connected with an external air source, and the air inlet is supplied with air by the external air source; a buffer cavity is arranged on the air supply pipe; the upper end of the buffer cavity is connected with the air inlet, and a positioning block is fixed between the upper end of the buffer cavity and the air inlet; the outer edge of the pressure regulating valve diaphragm is sealed and fixed to the air supply pipe at the lower end of the buffer cavity, and the inside of the pressure regulating valve diaphragm abuts against the lower end of the positioning block; the upper end of the pressure regulating spring is connected to the pressure regulating valve diaphragm, and the lower end of the pressure regulating spring is connected to the bottom shell, and the gas pressure is regulated by moving the inside of the pressure regulating valve diaphragm downward.

[0006] Furthermore, a circuit board is arranged between the gas supply pipe and the bottom shell; a metal part is fixed to the lower end of the inner part of the pressure regulating valve diaphragm; the upper end of the pressure regulating spring is connected to the metal part, and the lower end of the pressure regulating spring passes through the circuit board and is connected to the bottom shell; two contacts are respectively arranged on the circuit board under the metal part; the circuit board is communicatively connected to the external gas source, and the metal part descends to connect the two contacts, so that the circuit board sends a gas cut-off command to the external gas source to stop the external gas source from supplying gas to the air inlet.

[0007] Furthermore, the metal piece rises to disconnect the two contacts, and the circuit board sends an air supply instruction to the external air source to start the external air source to supply air to the air inlet.

[0008] Furthermore, a guide rod is fixed to the lower end of the inner part of the pressure regulating valve diaphragm, and the metal part is "T"-shaped, and the "T"-shaped metal part is sleeved and fixed outside the guide rod; the upper end of the pressure regulating spring is tightly sleeved outside the "T"-shaped metal part.

[0009] Furthermore, a positioning hole is provided at the upper end of the bottom shell, and the lower end of the pressure regulating spring is sleeved in the positioning hole.

[0010] Furthermore, there are multiple air outlet holes, which are respectively arranged on both sides of the buffer cavity.

[0011] After adopting the above technical solution, the utility model has the following beneficial effects:

[0012] 1. The utility model provides a gas pressure control structure. When there is a situation where several solenoid valves are suddenly closed and no gas supply is needed, the gas pressure in the gas pipeline increases, which can drive the pressure regulating valve diaphragm to move downward, so that part of the gas enters the buffer chamber, which can prevent the gas pressure in the gas pipeline from increasing suddenly. When the solenoid valve is opened again, the gas in the air inlet hole is provided to the air bag for inflation through the air outlet hole, and the air pressure in the gas pipeline drops. The pressure regulating spring can drive the pressure regulating valve diaphragm to move upward, and due to the positioning effect of the positioning block, the pressure regulating valve diaphragm will not continue to rise to block the air inlet hole, so the gas pressure can be effectively regulated and the service life of the gas pipeline can be increased.

[0013] 2. The utility model provides a gas pressure control structure, in which the circuit board is communicatively connected with an external gas source. When the gas pressure in the gas pipe increases, the metal part drops, and the two contacts can be connected through the metal part. At this time, the circuit board sends a gas cut-off command to the external gas source to stop the external gas source from supplying gas to the air inlet; when the gas pressure in the gas pipe decreases, the metal part rises, and the two contacts can be disconnected through the metal part. At this time, the circuit board sends a gas supply command to the external gas source to start the external gas source from supplying gas to the air inlet. The gas supply and gas cut-off can be performed adaptively and automatically, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a schematic diagram of the three-dimensional structure of the utility model when it is applied specifically;

[0015] Figure 2 It is a schematic diagram of the cutaway structure of the utility model;

[0016] Figure 3 It is a partial cross-sectional structural schematic diagram of the diaphragm portion of the pressure regulating valve of the utility model;

[0017] Figure 4 It is a schematic diagram of the principle of stopping or starting gas supply from an external gas source of the utility model.

[0018] The reference numerals in the figure are as follows:

[0019] 1. Air pipe; 10. Air inlet; 11. Air outlet; 12. Buffer chamber; 13. Positioning block; 2. Pressure regulating valve diaphragm; 20. Metal parts; 21. Guide rod; 3. Pressure regulating spring; 4. Bottom shell; 40. Positioning hole; 5. External air source; 6. Circuit board; 60. Contact. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] See also Figures 1 to 4 , a gas pressure control structure, comprising an air supply pipe 1, a pressure regulating valve diaphragm 2, a pressure regulating spring 3 and a bottom shell 4; the air supply pipe 1 is fixed to the upper end of the bottom shell 4; an air inlet 10 is arranged in the air supply pipe 1, and a plurality of air outlets 11 connected with the air inlet 10 are arranged on the air supply pipe 1; the air inlet 10 is connected with an external air source 5, and the air inlet 10 is supplied with air by the external air source 5; a buffer cavity 12 is arranged on the air supply pipe 1; the upper end of the buffer cavity 12 is connected with the air inlet 10, and a positioning block 13 is fixed between the upper end of the buffer cavity 12 and the air inlet 10; the outer edge of the pressure regulating valve diaphragm 2 is sealed and fixed to the air supply pipe 1 at the lower end of the buffer cavity 12, and the inside of the pressure regulating valve diaphragm 2 abuts against the lower end of the positioning block 13; the upper end of the pressure regulating spring 3 is connected to the pressure regulating valve diaphragm 2, and the lower end of the pressure regulating spring 3 is connected to the bottom shell 4, and the gas pressure is adjusted by moving the inside of the pressure regulating valve diaphragm 2 downward.

[0022] like Figures 1 to 4As shown, a circuit board 6 is arranged between the gas delivery pipe 1 and the bottom shell 4; a metal piece 20 is fixed to the lower end of the inner part of the pressure regulating valve diaphragm 2; the upper end of the pressure regulating spring 3 is connected to the metal piece 20, and the lower end of the pressure regulating spring 3 passes through the circuit board 6 and is connected to the bottom shell 4; two contacts 60 are respectively arranged on the circuit board 6 below the metal piece 20; the circuit board 6 is communicatively connected with the external gas source 5, and the metal piece 20 descends to connect the two contacts 60, so that the circuit board 6 sends a gas cut-off command to the external gas source 5 to stop the external gas source 5 from supplying gas to the air inlet 10.

[0023] like Figures 1 to 4 As shown, the metal member 20 rises to disconnect the two contacts 60 , and the circuit board 6 sends an air supply instruction to the external air source 5 to start the external air source 5 to supply air to the air inlet 10 .

[0024] like Figure 2 and Figure 3 As shown, a guide rod 21 is fixed to the lower end of the inner part of the pressure regulating valve diaphragm 2, and the metal part 20 is "T"-shaped. The "T"-shaped metal part 20 is sleeved and fixed outside the guide rod 21; the upper end of the pressure regulating spring 3 is tightly sleeved outside the "T"-shaped metal part 20.

[0025] like Figure 2 and Figure 3 As shown, a positioning hole 40 is provided at the upper end of the bottom shell 4 , and the lower end of the pressure regulating spring 3 is sleeved in the positioning hole 40 .

[0026] like Figure 1 and Figure 2 As shown, there are multiple air outlet holes 11 , and the multiple air outlet holes 11 are respectively arranged on both sides of the buffer cavity 12 .

[0027] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0028] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0029] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0030] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0031] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0032] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0033] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A gas pressure control structure, characterized in that: The invention comprises an air delivery pipe (1), a pressure regulating valve diaphragm (2), a pressure regulating spring (3) and a bottom shell (4); the air delivery pipe (1) is fixed to the upper end of the bottom shell (4); an air inlet (10) is arranged in the air delivery pipe (1), and a plurality of air outlets (11) connected to the air inlet (10) are arranged on the air delivery pipe (1); the air inlet (10) is connected to an external air source (5), and air is supplied to the air inlet (10) through the external air source (5); a buffer chamber (12) is arranged on the air delivery pipe (1); the buffer chamber (11) The upper end of the buffer chamber (12) is connected to the air inlet hole (10), and a positioning block (13) is fixed between the upper end of the buffer chamber (12) and the air inlet hole (10); the outer edge of the pressure regulating valve diaphragm (2) is sealed and fixed to the gas delivery pipe (1) at the lower end of the buffer chamber (12), and the inside of the pressure regulating valve diaphragm (2) abuts against the lower end of the positioning block (13); the upper end of the pressure regulating spring (3) is connected to the pressure regulating valve diaphragm (2), and the lower end of the pressure regulating spring (3) is connected to the bottom shell (4), and the gas pressure is adjusted by moving downward inside the pressure regulating valve diaphragm (2).

2. A gas pressure control structure according to claim 1, characterized in that: A circuit board (6) is arranged between the gas delivery pipe (1) and the bottom shell (4); a metal part (20) is fixed to the lower end of the pressure regulating valve diaphragm (2); the upper end of the pressure regulating spring (3) is connected to the metal part (20), and the lower end of the pressure regulating spring (3) passes through the circuit board (6) and is connected to the bottom shell (4); two contacts (60) are respectively arranged on the circuit board (6) below the metal part (20); the circuit board (6) is connected to the external gas source (5) for communication, and the metal part (20) descends to connect the two contacts (60), so that the circuit board (6) sends a gas cut-off command to the external gas source (5) to stop the external gas source (5) from supplying gas to the gas inlet hole (10).

3. A gas pressure control structure as claimed in claim 2, characterized in that: The metal part (20) rises to disconnect the two contacts (60), and the circuit board (6) sends an air supply instruction to the external air source (5) to start the external air source (5) to supply air to the air inlet (10).

4. A gas pressure control structure as claimed in claim 2, characterized in that: A guide rod (21) is fixed to the lower end of the inner part of the pressure regulating valve diaphragm (2); the metal piece (20) is in a "T" shape, and the "T"-shaped metal piece (20) is sleeved and fixed outside the guide rod (21); the upper end of the pressure regulating spring (3) is tightly sleeved outside the "T"-shaped metal piece (20).

5. A gas pressure control structure according to claim 1, characterized in that: The upper end of the bottom shell (4) is provided with a positioning hole (40), and the lower end of the pressure regulating spring (3) is sleeved in the positioning hole (40).

6. A gas pressure control structure according to claim 1, characterized in that: There are a plurality of air outlet holes (11), and the plurality of air outlet holes (11) are respectively arranged on both sides of the buffer cavity (12).

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