High pressure gas source control switch

Abstract

The utility model belongs to manned aircraft life support system technical field, concretely relates to a high pressure gas source control switch. Include: casing, the carrier of gas source control switch, is equipped with the opening in the top, mounting seat is located in the casing, is equipped with blind hole in the upper end surface, and the blind hole is two step holes, the bottom is small diameter hole, and is communicated with the outlet cavity, and the top is big diameter hole, and is communicated with the inlet cavity, main rod, the lower end is inserted into mounting seat and is pressed on the step surface of blind hole, and the upper end is connected with connecting rod, the cover plate is used for closing the opening in the top of casing, the cam handle is located on the cover plate, is hinged with connecting rod through the pin, connecting rod, the middle part is equipped with annular table, spring, set up between annular table and the inner wall of cover plate, is in the pre -tightening state, is used for pressing the main rod on the step surface. Through the cooperation of various parts, the high pressure gas source can be opened and closed control, guarantees the flight safety of pilot.

Description

Technical Field

[0001] This utility model belongs to the technical field of life support systems for manned aircraft, and specifically relates to a high-pressure gas source control switch. Background Technology

[0002] Anti-G protection is a crucial aspect of pilot safety and survival. When the chest and abdomen are protected but the lower limbs are not subjected to pressure during pressurized breathing, blood pools in the lower limbs, reducing blood return to the heart and thus decreasing pilot endurance. Therefore, aircraft are equipped with anti-G regulators, and pilots wear anti-G pants connected to these regulators for lower limb protection. However, if the anti-G regulator malfunctions, the continuous pressurization of the anti-G pants can cause compression of the pilot's lower limbs, potentially leading to hematoma and compressing flight safety. Therefore, a high-pressure gas source control switch is needed, which can be installed on a common anti-G regulator to allow the pilot to control the anti-G gas supply. Utility Model Content

[0003] Purpose of the utility model: To provide a high-pressure gas source control switch, giving pilots the option to switch the gas source on or off.

[0004] Technical solution: A gas source control switch, comprising: The housing, which serves as the carrier for the gas source control switch, has an opening at the top; the housing 7 is used to connect all the parts and form the necessary cavities and gas passages.

[0005] The mounting base is located inside the housing. The upper end face has a blind hole, which is a two-stage stepped hole. The bottom has a small diameter hole that communicates with the air outlet chamber, and the top has a large diameter hole that communicates with the air inlet chamber. The main rod has its lower end inserted into the mounting base and pressed against the stepped surface of the blind hole, while its upper end is connected to the connecting rod. Cover plate, used to close the opening at the top of the housing; The cam handle, located on the cover plate, is hinged to the connecting rod via a pin; The connecting rod has a ring-shaped platform in the middle; A spring, positioned between the annular platform and the inner wall of the cover plate, is in a pre-tightened state and is used to press the main rod firmly against the stepped surface.

[0006] Furthermore, the cam handle has different heights on both sides, and the opening and closing of the intake and exhaust chambers is controlled by the height difference between the two sides. When the cam handle 1 is turned to "closed", the airtightness is ensured by the spring force of spring 5. The intake pressure of intake chamber A can reach 1.2MPa. Therefore, in order to ensure airtightness, when spring 5 is compressed to 12mm, the spring force is no less than 85N.

[0007] Furthermore, an O-ring is installed between the lower end of the main rod and the side wall of the large-diameter bore. Radial sealing is achieved through the O-ring 9 to ensure the airtightness of the air intake chamber A.

[0008] Furthermore, a blind hole is provided at the lower end of the main rod, and a valve gasket is installed in the blind hole. The diameter of the valve gasket is larger than the inner diameter of the small-diameter hole. The valve gasket 11 installed on the connecting rod 8 ensures the airtightness of the air outlet chamber B when the main rod 8 moves in the mounting seat 10.

[0009] Furthermore, the displacement of the connecting rod is limited by the frustum on the connecting rod to prevent it from detaching from the mounting base.

[0010] Furthermore, a gasket is provided between the cam handle and the cover plate, which can reduce the wear on the cover plate 4 when the cam handle 1 is turned.

[0011] Furthermore, the overall size of the switch can be adaptively adjusted by the adjustability of the mounting dimensions of the connecting rod 6 and the main rod 8.

[0012] Furthermore, when the spring is compressed to 12mm, the spring force is no less than 85N.

[0013] Furthermore, when the cam handle is turned to "closed", the airtightness is ensured by the spring force, and the intake pressure of intake chamber A can reach 1.2MPa; When the cam handle is in the "on" position, the spring provides an upward pulling force to the connecting rod and pulls up the main rod. The air inlet chamber A is the same as the air outlet chamber B, and the air source enters the air outlet chamber B and flows into the product.

[0014] Beneficial effects: A gas source control switch can easily and conveniently control the opening and closing of a high-pressure gas source, ensuring that the pilot can cut off the high-pressure gas source in an emergency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the function of a gas source control switch according to this utility model.

[0016] Figure 2 This is a side view of a gas source control switch according to the present invention.

[0017] Among them: 1-cam handle, 2-pin, 3-waist plate, 4-cover plate, 5-spring, 6-connecting rod, 7-housing, 8-main rod, 9-O-ring, 10-mounting seat, 11-valve gasket, A-inlet chamber, B-outlet chamber. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0020] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] See Figure 1 and Figure 2A high-pressure gas source control switch is characterized in that it comprises a cam handle 1, a pin 2, a washer 3, a cover plate 4, a spring 5, a connecting rod 6, a housing 7, a main rod 8, an O-ring 9, a mounting base 10, a valve pad 11, an air inlet chamber A, and an air outlet chamber B. The cam handle 1 is a cam-shaped handle connected to the connecting rod 6 via the pin 2, and can rotate around the pin 2 to complete the opening and closing action. The washer 3 is installed between the cam handle 1 and the cover plate 4 to reduce wear on the cover plate 4 during opening and closing. The cover plate 4 is installed on the housing 7 to ensure the fixation of the entire mechanism. The spring 5 is located between the cover plate 4 and the connecting rod 6. When the cam handle 1 is in the "closed" position, the spring 5 provides downward pressure to the connecting rod 6; when the cam handle 1 is in the "open" position, the spring 5 provides upward tension to the connecting rod 6, lifting the connecting rod 6. Connecting rod 6 and main rod 8 are connected by threads, and the overall length of connecting rod 6 and main rod 8 can be controlled by the screw-in depth of the threads of connecting rod 6 to ensure airtightness when the switch is closed. An O-ring 9 is installed on main rod 8 to ensure airtightness when main rod 8 moves with mounting base 10. Mounting base 10 is installed on housing 7 to ensure the input and output of air source. A groove is designed at the bottom of main rod 8 for installing valve pad 11 to ensure airtightness when the switch is closed. Inlet chamber A is connected to housing 7, and air source first enters inlet chamber A. When cam handle 1 is in the "closed" position, spring 5 provides downward pressure to connecting rod 6 and transmits it to main rod 8, ensuring airtightness between inlet chamber A and outlet chamber B through valve pad 11. When cam handle 1 is in the "open" position, spring 5 provides upward pulling force to connecting rod 6 and pulls up main rod 8. Inlet chamber A and outlet chamber B are now connected, and air source enters outlet chamber B and flows into the product interior.

[0023] The housing 7 is used to connect all the parts and form the necessary cavities and gas passages.

[0024] When the cam handle 1 is turned to "closed", the airtightness is ensured by the spring force of spring 5. The intake pressure of intake chamber A can reach 1.2MPa. Therefore, in order to ensure airtightness, when spring 5 is compressed to 12mm, the spring force is not less than 85N.

[0025] The overall size of the switch can be adaptively adjusted by the adjustable installation dimensions of the connecting rod 6 and the main rod 8.

[0026] The airtightness of the intake chamber A is ensured by radial sealing through O-ring 9.

[0027] The displacement is limited by the frustum on the connecting rod 8 to ensure that the connecting rod 8 will not detach from the mounting base 10.

[0028] The airtightness of the air outlet chamber B is ensured by the valve pad 11 installed on the connecting rod 8.

[0029] The opening and closing of the valve is controlled by the height difference between the two sides of the cam handle 1.

[0030] The above description is merely a specific embodiment of this utility model, providing a detailed description of the utility model. Parts not covered in detail are conventional techniques. However, the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A gas source control switch, characterized in that, include: The housing serves as the support for the gas source control switch and has an opening at the top. The mounting base is located inside the housing and has a blind hole on its upper surface. The blind hole is a two-stage stepped hole. The bottom has a small-diameter hole that connects to the air outlet chamber, and the top has a large-diameter hole that connects to the air inlet chamber. The main rod has its lower end inserted into the mounting base and pressed against the stepped surface of the blind hole, while its upper end is connected to the connecting rod. Cover plate, used to close the opening at the top of the housing; The cam handle, located on the cover plate, is hinged to the connecting rod via a pin; The connecting rod has a ring-shaped platform in the middle; A spring, positioned between the annular platform and the inner wall of the cover plate, is in a pre-tightened state and is used to press the main rod firmly against the stepped surface.

2. The gas source control switch according to claim 1, characterized in that, The cam handle has different heights on both sides, and the opening and closing of the intake and exhaust chambers are controlled by the height difference between the two sides.

3. The gas source control switch according to claim 2, characterized in that, An O-ring is provided between the lower end of the main rod and the side wall of the large-diameter hole.

4. The gas source control switch according to claim 3, characterized in that, A blind hole is provided at the lower end of the main rod, and a valve pad is installed in the blind hole. The diameter of the valve pad is larger than the inner diameter of the small diameter hole.

5. The gas source control switch according to claim 4, characterized in that, The displacement of the connecting rod is limited by the frustum on the connecting rod to prevent it from detaching from the mounting base.

6. The gas source control switch according to claim 5, characterized in that, A gasket is provided between the cam handle and the cover plate.

7. The gas source control switch according to claim 6, characterized in that, When the spring is compressed to 12mm, the spring force is no less than 85N.

8. The gas source control switch according to claim 7, characterized in that, When the cam handle is turned to "closed", the airtightness is ensured by the spring force, and the intake pressure of intake chamber A can reach 1.2MPa. When the cam handle is in the "on" position, the spring provides an upward pulling force to the connecting rod and pulls up the main rod. The air inlet chamber A is the same as the air outlet chamber B, and the air source enters the air outlet chamber B and flows into the product.

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