Gas spring with safety performance

Abstract

The application relates to the technical field of gas springs, and discloses a gas spring with safety performance, which comprises an outer cylinder, an inner cylinder is arranged in the inner part of the outer cylinder, a piston rod is slidably connected to the inner wall of the inner cylinder, a gas cavity is arranged between the inner cylinder and the outer cylinder, a communication hole is formed in the outer wall of the outer cylinder on one side of the gas cavity, a first pipeline is arranged on the outer wall of the outer cylinder on one side of the communication hole, the first pipeline is fixedly connected with a second pipeline through bolts, the gas cavity between the inner cylinder and the outer cylinder is filled with high-pressure inert gas, the piston rod slides in the inner wall of the inner cylinder, and seat adjustment is realized by means of gas pressure change; when the gas spring has abnormal internal gas pressure rise and explosion risk due to long-term use, the gas pressure in the gas cavity increases to a certain degree, a rupture disc arranged between the first pipeline and the second pipeline and fixed by a gasket ring and a clamping device is broken, the gas is released through the communication hole, the first pipeline and the second pipeline, the overall explosion of the gas spring is avoided, and the safety of a user is ensured.

Description

Technical Field

[0001] This application relates to the field of gas spring technology, specifically a gas spring with safety features. Background Technology

[0002] A seat gas spring, also known as a seat support gas spring or seat adjustment gas spring, is a mechanical device that uses high-pressure inert gas (such as nitrogen) as a working medium to adjust the height, angle, or fore-aft position of a seat through changes in internal air pressure. It combines the elastic support characteristics of a gas spring with the adjustment needs of a seat, providing a stable, smooth, and adjustable support force for the seat.

[0003] Currently, during long-term use, gas springs may experience unstable internal air pressure, which could lead to the gas spring bursting and causing injury to the user. Utility Model Content

[0004] The purpose of this application is to provide a gas spring with safety performance, which solves the problem mentioned in the background art that the gas spring may experience unstable internal air pressure during long-term use, which may lead to the gas spring bursting and causing injury to the user.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This application provides a gas spring with safety performance, including an outer cylinder, an inner cylinder installed inside the outer cylinder, a piston rod slidably connected to the inner wall of the inner cylinder, an air chamber between the inner cylinder and the outer cylinder, a connecting hole on the outer wall of the outer cylinder located on one side of the air chamber, a first pipe installed on the outer wall of the outer cylinder located on the side of the connecting hole, a second pipe fixedly installed on the first pipe by bolts, a washer abutting on the opposite side of the first pipe and the second pipe, two clamps are arranged between the two washers, and a rupture disc abutting on the inner wall of the two clamps.

[0007] By adopting the above technical solution, the air chamber between the inner and outer cylinders is filled with high-pressure inert gas. The piston rod slides on the inner wall of the inner cylinder, and the seat adjustment is achieved by changes in air pressure. When the gas spring experiences an abnormal increase in internal air pressure due to long-term use and there is a risk of explosion, the gas pressure in the air chamber will increase to a certain level and break through the rupture disc, which is set between the first and second pipes and fixed by a gasket and a clamp. The gas releases pressure through the connecting hole, the first pipe, and the second pipe, preventing the gas spring from bursting as a whole and ensuring the safety of the user.

[0008] Optionally, a positioning ring is fixedly installed on the outer wall of the outer cylinder located below the first pipe.

[0009] By adopting the above technical solution, the outer cylinder can fix the positioning ring.

[0010] Optionally, a vertical cylinder is fixedly installed at the lower end of the piston rod.

[0011] By adopting the above technical solution, the piston rod can be fixed by the vertical cylinder.

[0012] Optionally, a guide sleeve is embedded in the inner wall above the vertical cylinder, and the outer cylinder is slidably connected to the guide sleeve.

[0013] By adopting the above technical solution, the vertical cylinder can play a positioning role for the guide sleeve, and the guide sleeve can play a guiding role for the expansion and contraction of the outer cylinder.

[0014] Optionally, an actuating rod is slidably installed in the inner wall above the outer cylinder.

[0015] By adopting the above technical solution, the air chamber between the outer and inner cylinders can be opened by sliding the starting rod in the outer cylinder.

[0016] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0017] The technical solution of this application has a gas chamber between the inner and outer cylinders filled with high-pressure inert gas. The piston rod slides on the inner wall of the inner cylinder, and the seat is adjusted by the change of air pressure. When the gas spring experiences an abnormal increase in internal air pressure due to long-term use and there is a risk of explosion, the gas pressure in the gas chamber will increase to a certain level and break through the rupture disc, which is set between the first and second pipes and fixed by a gasket and a clamp. The gas releases pressure through the connecting hole, the first pipe and the second pipe, thus preventing the gas spring from bursting as a whole and ensuring the safety of the user. Attached Figure Description

[0018] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is an axial view schematic diagram of a gas spring with safety performance according to this application;

[0020] Figure 2 This is a front cross-sectional view of a gas spring with safety features according to this application;

[0021] Figure 3 This application relates to a gas spring with safety features. Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This application relates to a gas spring with safety features. Figure 3Enlarged view of section B in the middle.

[0023] In the diagram: 1. Outer cylinder; 2. Inner cylinder; 3. Piston rod; 4. Air chamber; 5. Connecting hole; 6. First pipe; 7. Bolt; 8. Second pipe; 9. Starting rod; 10. Washer ring; 11. Clamp; 12. Rupture disc; 13. Vertical cylinder; 14. Guide sleeve; 15. Positioning ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This application provides a technical solution: a gas spring with safety performance, including an outer cylinder 1, an inner cylinder 2 installed inside the outer cylinder 1, a piston rod 3 slidably connected to the inner wall of the inner cylinder 2, an air chamber 4 provided between the inner cylinder 2 and the outer cylinder 1, a connecting hole 5 opened on the outer wall of the outer cylinder 1 located on one side of the air chamber 4, a first pipe 6 installed on the outer wall of the outer cylinder 1 located on one side of the connecting hole 5, a second pipe 8 fixedly installed on the first pipe 6 by bolts 7, a washer 10 abutting on the opposite side of the first pipe 6 and the second pipe 8, two clamps 11 provided between the two washer rings 10, and a rupture disc 12 abutting on the inner wall of the two clamps 11;

[0026] In the technical solution of this application, the air chamber 4 between the inner cylinder 2 and the outer cylinder 1 is filled with high-pressure inert gas. The piston rod 3 slides on the inner wall of the inner cylinder 2, and the seat adjustment is achieved by the change of air pressure. When the gas spring experiences an abnormal increase in internal air pressure due to long-term use and there is a risk of explosion, the gas pressure in the air chamber 4 increases to a certain extent and will break through the rupture disc 12, which is set between the first pipe 6 and the second pipe 8 and fixed by the gasket 10 and the clamp 11. The gas releases pressure through the connecting hole 5, the first pipe 6 and the second pipe 8, avoiding the gas spring from bursting as a whole and ensuring the safety of the user.

[0027] In the technical solution of this application, such as Figure 2As shown, a vertical cylinder 13 is fixedly installed at the lower end of the piston rod 3. The vertical cylinder 13 can fix the piston rod 3. A guide sleeve 14 is embedded in the inner wall above the vertical cylinder 13. The outer cylinder 1 is slidably connected to the guide sleeve 14. The vertical cylinder 13 can position the guide sleeve 14, and the guide sleeve 14 can guide the extension and retraction of the outer cylinder 1. An activation rod 9 is slidably installed in the inner wall above the outer cylinder 1. By sliding the activation rod 9 in the outer cylinder 1, the air chamber 4 set between the outer cylinder 1 and the inner cylinder 2 can be opened.

[0028] In the technical solution of this application, such as Figure 1 and Figure 2 As shown, a positioning ring 15 is fixedly installed on the outer wall of the outer cylinder 1 located below the first pipe 6. The positioning ring 15 can be fixed by the outer cylinder 1.

[0029] In use, the air chamber 4 between the inner cylinder 2 and the outer cylinder 1 is filled with high-pressure inert gas. The piston rod 3 slides on the inner wall of the inner cylinder 2, and the seat adjustment function is achieved by the change of air pressure. When the gas spring experiences an abnormal increase in internal air pressure due to factors such as long-term use, posing a risk of bursting, the gas pressure in the air chamber 4 will increase to a certain level and break through the bursting disc 12, which is located between the first pipe 6 and the second pipe 8 and is fixed by the gasket 10 and the clamp 11. The gas releases pressure through the connecting hole 5, the first pipe 6 and the second pipe 8, preventing the gas spring from bursting as a whole. At the same time, the vertical cylinder 13 fixes the piston rod 3, and the guide sleeve 14 above it guides the extension and retraction of the outer cylinder 1. The sliding of the starting rod 9 above the outer cylinder 1 can activate the opening of the air chamber 4. The vertical cylinder 13, the guide sleeve 14, the outer cylinder 1, the inner cylinder 2 and the piston rod 3 are connected as follows: Figure 2 All of the components shown require a proper sealing mechanism, with sealing rings installed between each component. Furthermore, the vertical cylinder 13, guide sleeve 14, outer cylinder 1, inner cylinder 2, and piston rod 3 are all existing technologies, and each device contains existing complete technologies.

Claims

1. A gas spring with safety features, characterized in that: The device includes an outer cylinder (1), an inner cylinder (2) is installed inside the outer cylinder (1), a piston rod (3) is slidably connected to the inner wall of the inner cylinder (2), an air chamber (4) is provided between the inner cylinder (2) and the outer cylinder (1), a connecting hole (5) is provided on the outer wall of the outer cylinder (1) located on one side of the air chamber (4), a first pipe (6) is installed on the outer wall of the outer cylinder (1) located on one side of the connecting hole (5), a second pipe (8) is fixedly installed on the first pipe (6) by bolts (7), a gasket (10) is abutted on the opposite side of the first pipe (6) and the second pipe (8), and two clamps (11) are provided between the two gaskets (10), and a rupture disc (12) is abutted on the inner wall of the two clamps (11).

2. A gas spring with safety performance according to claim 1, characterized in that, A positioning ring (15) is fixedly installed on the outer wall of the outer cylinder (1) located below the first pipe (6).

3. A gas spring with safety performance according to claim 1, characterized in that, The piston rod (3) has a vertical cylinder (13) fixedly installed at its lower end.

4. A gas spring with safety performance according to claim 3, characterized in that, A guide sleeve (14) is embedded in the inner wall above the vertical cylinder (13), and the outer cylinder (1) is slidably connected to the guide sleeve (14).

5. A gas spring with safety performance according to claim 4, characterized in that, A starter rod (9) is slidably installed in the inner wall above the outer cylinder (1).

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