Damping type gas spring

Abstract

The invention discloses a damping type gas spring. The damping type gas spring. comprises a cylinder barrel and a piston rod arranged on the cylinder barrel in a telescopic mode, the piston rod is provided with a piston assembly, the piston assembly comprises a piston framework, a rectangular ring, a bowl-shaped ring, a piston flat gasket and a piston fancy gasket, and the piston framework is fixedly installed on the piston rod; the rectangular ring and the bowl-shaped ring are both arranged on the piston framework in a sleeving mode, the piston flat gasket abuts against the rectangular ring for limiting, the piston fancy gasket abuts against the bowl-shaped ring for limiting, and the outer side wall of the bowl-shaped ring is arranged to be a cylindrical surface; and a long-strip-shaped thin groove is formed in the inner wall of the cylinder barrel in the axial direction of the cylinder barrel, and air in the cylinder barrel circulates through the thin groove. The damping type gas spring has the following advantages and effects that a new mechanical structure is utilized for the scheme, the mode that the single bowl-shaped ring is matched with the rectangular ring is adopted, friction resistance with the inner wall of the cylinder barrel during movement can be reduced to a certain extent, accordingly, large static locking force is prevented from being generated during starting, the outward expansion degree of the bowl-shaped ring can be reduced through the cylindrical surface, and elastic restoring force is reduced, so that starting force is reduced, and starting is more convenient.

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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