A damping gas spring

Abstract

The invention discloses a damping gas spring, which comprises a cylinder, a telescopic piston rod arranged on the cylinder, the piston rod is provided with a piston assembly, and the piston assembly includes a piston skeleton, a rectangular ring, a bowl ring, a piston flat washer and a piston The flower pad, the piston frame is fixedly installed on the piston rod; the rectangular ring and the bowl ring are both sleeved on the piston frame, the piston flat pad and the rectangular ring are offset to limit, the piston flower pad and the bowl ring are offset to limit, and the bowl ring The outer wall of the cylinder is set as a cylinder; the inner wall of the cylinder is provided with a long thin groove along the axial direction of the cylinder, and the thin groove is used for the gas circulation in the cylinder. The present invention has the following advantages and effects: the scheme utilizes a new mechanical structure and adopts a single bowl-shaped ring and a rectangular ring to cooperate to a certain extent, which can reduce the frictional resistance between the inner wall of the cylinder during movement, thereby avoiding the Larger static locking force is generated when starting, and the cylindrical surface can reduce the degree of expansion of the bowl-shaped ring and reduce the elastic recovery force, thereby reducing the starting force and making it easier to start.

Description

technical field [0001] The invention relates to the technical field of gas springs, in particular to a damping type gas spring. Background technique [0002] Gas spring is an industrial accessory that can perform functions such as support, buffer, brake, height adjustment and angle adjustment. It mainly consists of a pressure cylinder, a piston rod, a piston, a seal guide sleeve, fillers and joints, etc. The principle is to fill the closed pressure cylinder with an inert gas or an oil-gas mixture, so that the pressure in the cavity is several times or dozens of times higher than the atmospheric pressure, and the pressure difference generated by the cross-sectional area of ​​the piston rod is smaller than that of the piston. To realize the movement of the piston rod. It is often used on the windows of RVs, mainly to support the windows when they are opened. [0003] The common damping gas springs on the market mainly include two types. First, the piston is provided with po...

AI Technical Summary

Problems solved by technology

However, the above-mentioned gas spring has the following disadvantages: 1. When the piston is stopped outside the groove, pulling the piston rod will cause a large starting force; 2. The piston is required to be in use during assembly. It must be located in the groove to prevent excessive opening force, and must be located outside the groove to ensure a large supporting force when the piston is at its maximum stroke, which will lead to greater difficulty in assembly and higher requirements for dimensional accuracy

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