Self-locking type compression gas spring

Abstract

The invention discloses a self-locking type compression gas spring. The spring comprises a cylinder barrel, a piston, a piston rod, a supporting assembly, gas and a locking mechanism, wherein one endof the cylinder barrel is closed or sealed, the other end of the cylinder barrel is provided with a first sealing assembly, and internal threads are arranged on the inner wall of the cylinder barrel;the piston is located in the cylinder barrel, external threads are arranged on the outer wall of the piston, and the cylinder barrel and the piston are matched through the internal threads and the external threads; one end of the piston rod is connected with the piston, and the other end of the piston rod penetrates through the first sealing assembly and is exposed outside the cylinder barrel; thecylinder barrel or the piston rod is rotatably mounted on the supporting assembly; the gas are arranged in the cylinder barrel, and when the cylinder barrel is in a non-locking state, the cylinder barrel or the piston rod connected with the piston moves through the gas acting on the piston and under the cooperation of the internal threads of cylinder barrel and the external threads of the piston;and the locking mechanism is used for locking the moving cylinder barrel or the piston rod when the locking mechanism is matched with the cylinder barrel or the piston rod. The self-locking type compression gas spring has the advantage of being stable in state.

Description

technical field [0001] The invention relates to a self-locking compressed gas spring. Background technique [0002] High-pressure self-locking compressed gas springs are suitable for the lifting and pitching of seats, the opening and closing of doors, and the lifting of some mechanical devices. Since these devices are in direct contact with people, gas springs are usually required to have high safety and reliability to ensure that there are no accidents during the action; the structure should be simple to facilitate installation, use and maintenance; The auxiliary power should be small, the lifting force should be constant, and a buffer mechanism should be set to avoid damage; when lifting, it should be guaranteed to stay in any position at any time. [0003] Due to the unreasonable structure of the existing self-locking compressed gas spring, when the self-locking compressed gas spring is lifted to the required position, the pressure on both sides of the piston in the self...

AI Technical Summary

Problems solved by technology

[0003] Due to the unreasonable structure of the existing self-locking compressed gas spring, when the self-locking compressed gas spring is lifted to the required position, the pressure on both sides of the piston in the self-locking compressed gas spring has reached a balance in theory, but, If the user applies pressure or lifting force to the upper or lower part of the mechanism that needs to be lifted (such as the desktop or table legs) without paying attention, it will cause the pressure inside the gas spring to change, resulting in the upper or lower part of the mechanism that needs to be lifted ( Such as table or table legs) form a floating state

Therefore, the current self-locking compressed gas spring cannot ensure the stability of its state during use

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