Double-air-chamber lockable air spring

Abstract

The double-air-chamber lockable air spring comprises an outer cylinder barrel, and a damping adjustment locking cavity module and a piston rod cavity module are arranged in the outer cylinder barrel. The damping adjusting locking cavity module comprises a damping adjusting locking cavity inner cylinder barrel, an adjusting locking block is arranged between the damping adjusting locking cavity inner cylinder barrel and the piston rod cavity module, an adjusting locking shaft is arranged in the adjusting locking block, the adjusting locking shaft is provided with an elastic recovery body facing the piston rod cavity module, and the other end of the adjusting locking shaft is connected with an adjusting pressing shaft. And a single-side air cavity damping adjusting and locking air spring structure is formed.

Description

Technical Field

[0001] The utility model relates to a damping device, in particular to the technical field of gas springs, and specifically to a double-gas-chamber type lockable gas spring. Background Art

[0002] Compared with traditional mechanical springs, gas springs have the advantages of small size, large elastic force, long stroke, stable operation, high precision, long life, smooth elastic force curve, and no need for preload.

[0003] The gas spring in the prior art generally includes a cylinder, a threaded sleeve fixedly mounted on the upper end of the cylinder, and a plunger rod installed in the cylinder body and passed through the threaded sleeve. A sealing ring is provided on the outside of the threaded sleeve, which is in sealing contact with the inner wall of the cylinder. When working, the plunger rod is forced to move downward and form an elastic supporting force; when the force is removed, the plunger rod returns.

[0004] However, in some cases, the damping of the gas spring needs to be adjusted as needed, and conventional gas springs can only provide fixed damping.

[0005] Therefore, it is necessary to provide a dual-chamber lockable gas spring to achieve the above-mentioned purpose. Utility Model Content

[0006] The purpose of the utility model is to provide a double-air-chamber lockable gas spring.

[0007] The technical solution is as follows:

[0008] A dual-chamber lockable gas spring comprises an outer cylinder, in which a damping adjustment locking chamber module and a piston rod chamber module are arranged;

[0009] The damping adjustment locking chamber module includes a cylinder in the damping adjustment locking chamber, an adjustment locking block is arranged between the cylinder in the damping adjustment locking chamber and the piston rod chamber module, an adjustment locking shaft is arranged in the adjustment locking block, and an elastic recovery body is arranged on the adjustment locking shaft facing the piston rod chamber module, and the other end is connected to the adjustment pressing shaft to form a gas spring structure with single-sided air cavity damping adjustment locking.

[0010] Furthermore, the adjustment locking block is provided with a medium flow channel A and a medium flow channel B corresponding to the adjustment locking shaft, which are connected to the inner cylinder and the outer cylinder of the adjustment locking cavity.

[0011] Furthermore, the adjustment pressing shaft is used as an adjustment actuator to compress the adjustment locking shaft, and the medium between the adjustment locking shaft and the adjustment locking block flows out through the medium flow channel A and the medium flow channel B, forming a fast compression damping adjustment structure. The adjustment locking shaft recovers, and the medium flows into the increased volume chamber space between the adjustment locking shaft and the adjustment locking block through the medium flow channel A and the medium flow channel B, forming a fast rebound adjustment gas spring structure.

[0012] Furthermore, the outer cylinder is provided with a plug A and a plug B corresponding to the damping adjustment locking chamber module and the piston rod chamber module, and the plug A and the plug B are connected to the outer cylinder through a seal.

[0013] Furthermore, the piston rod chamber module includes a piston inner cylinder, a piston is arranged in the piston inner cylinder, and the piston is connected to the piston rod.

[0014] Furthermore, a plug C is provided corresponding to the plug B in the piston inner cylinder, the plug C is connected to the piston inner cylinder through a sealing end block, and a medium flow channel C is opened on the plug C to communicate with the inner cavity of the outer cylinder.

[0015] Compared with the prior art, the utility model can quickly adjust the amount of damping medium in the damping cavity corresponding to the piston through the damping adjustment locking cavity, quickly adjust the locking damping value, and improve the versatility of the gas spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model. DETAILED DESCRIPTION

[0017] Example:

[0018] See Figure 1 This embodiment shows a dual-chamber lockable gas spring, comprising an outer cylinder 1, in which a damping adjustment locking chamber module 2 and a piston rod chamber module 3 are provided;

[0019] The damping adjustment locking chamber module 2 includes a damping adjustment locking chamber cylinder 21, an adjustment locking block 22 is arranged between the damping adjustment locking chamber cylinder 21 and the piston rod chamber module 3, an adjustment locking shaft 23 is arranged in the adjustment locking block 22, and the adjustment locking shaft 23 is provided with an elastic recovery body 24 facing the piston rod chamber module, and the other end is connected to the adjustment pressing shaft 25, forming a gas spring structure with single-sided air cavity damping adjustment locking.

[0020] The adjusting and locking block 22 is provided with a medium flow channel A26 and a medium flow channel B27 corresponding to the adjusting and locking shaft 23 , which communicate with the inner cylinder 21 and the outer cylinder 1 of the adjusting and locking cavity.

[0021] The adjustment pressing shaft 23 is used as an adjustment actuator to compress the adjustment locking shaft 23. The medium between the adjustment locking shaft 23 and the adjustment locking block 22 flows out through the medium flow channel A26 and the medium flow channel B27, forming a fast compression damping adjustment structure. The adjustment locking shaft recovers, and the medium flows into the increased volume chamber space between the adjustment locking shaft 23 and the adjustment locking block 22 through the medium flow channel A26 and the medium flow channel B27, forming a fast rebound adjustment gas spring structure.

[0022] The outer cylinder 1 is provided with a plug A4 and a plug B5 corresponding to the damping adjustment locking chamber module and the piston rod chamber module. The plug A and the plug B are connected to the outer cylinder through a seal.

[0023] The piston rod chamber module 3 includes a piston inner cylinder 31 , a piston 32 is disposed in the piston inner cylinder 31 , and the piston 32 is connected to a piston rod 33 .

[0024] The plug B5 is provided with a plug C6 corresponding to the piston inner cylinder. The plug C6 is connected to the piston inner cylinder 31 through the sealing end block 7, and a medium flow channel C61 connected to the inner cavity of the outer cylinder is opened on the movable plug C6.

[0025] Compared with the prior art, the utility model can quickly adjust the amount of damping medium in the damping cavity corresponding to the piston through the damping adjustment locking cavity, quickly adjust the locking damping value, and improve the versatility of the gas spring.

[0026] The above are some embodiments of the present invention. For those skilled in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, which all fall within the scope of protection of the present invention.

Claims

1. A dual-chamber lockable gas spring, characterized by: It includes an outer cylinder, in which a damping adjustment locking chamber module and a piston rod chamber module are arranged; The damping adjustment locking chamber module includes a cylinder in the damping adjustment locking chamber, an adjustment locking block is arranged between the cylinder in the damping adjustment locking chamber and the piston rod chamber module, an adjustment locking shaft is arranged in the adjustment locking block, and an elastic recovery body is arranged on the adjustment locking shaft facing the piston rod chamber module, and the other end is connected to the adjustment pressing shaft to form a gas spring structure with single-sided air cavity damping adjustment locking.

2. The dual-chamber lockable gas spring according to claim 1, characterized in that: The adjustment locking block is provided with a medium flow channel A and a medium flow channel B which are connected with the inner cylinder and the outer cylinder of the damping adjustment locking cavity, corresponding to the adjustment locking shaft.

3. The dual-chamber lockable gas spring according to claim 2, characterized in that: The adjusting pressing shaft is used as the adjusting actuator to compress the adjusting locking shaft. The medium between the adjusting locking shaft and the adjusting locking block flows out through the medium flow channel A and the medium flow channel B, forming a fast compression damping adjustment structure. The adjusting locking shaft recovers, and the medium flows into the increased volume chamber space between the adjusting locking shaft and the adjusting locking block through the medium flow channel A and the medium flow channel B, forming a fast rebound adjustment gas spring structure.

4. The dual-chamber lockable gas spring according to claim 3, characterized in that: The outer cylinder is provided with a plug A and a plug B corresponding to the damping adjustment locking chamber module and the piston rod chamber module. The plug A and the plug B are connected to the outer cylinder through a seal.

5. The dual-chamber lockable gas spring according to claim 4, characterized in that: The piston rod chamber module comprises a piston inner cylinder, a piston is arranged in the piston inner cylinder, and the piston is connected to the piston rod.

6. The dual-chamber lockable gas spring according to claim 5, characterized in that: A plug C is provided corresponding to the piston inner cylinder by the plug B. The plug C is connected to the piston inner cylinder through a sealing end block, and a medium flow channel C is opened on the plug C to communicate with the inner cavity of the outer cylinder.

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