Fluid damper for parts movable relative to each other, comprising a piston movably guided in a cylinder

Abstract

The invention describes a fluid damper for equipment parts movable relative to each other, said fluid damper comprising a piston (4) movable in a cylinder (1) along a longitudinal axis to guide. At least one through hole (4.1, 4.2) for fluid flow is arranged in the piston (4) and / or between the piston (4) and the cylinder (1). The sleeve (2) is arranged to rotate radially relative to the piston (4) against a spring load about a longitudinal axis or about an axis parallel to the longitudinal axis, said sleeve comprising on its outer periphery a through hole (4.1, 4.2) A plurality of wings (2.1, 2.2; 2.1', 2.2') corresponding to the number. The spring loading is oriented such that the wings (2.1 , 2.2; 2.1', 2.2') to expose the through holes (4.1, 4.2), and in the case of movement against said direction of motion, as the relative velocity between the piston (4) and the cylinder (1) along the longitudinal axis increases , the wings gradually close the through hole. The fluid damper comprises a hollow cylindrical part of a piston (4) enclosing a sleeve (2) along at least a part of its longitudinal axis and at least one wing (2.1, 2.2; 2.1', 2.2').

Description

technical field [0001] The invention relates to a fluid damper, ie a damper with fluid for plant parts that can be moved relative to one another, the fluid damper having a piston that is adjustably guided in a cylinder, such as described in this application. Background technique [0002] In one such fluid damper in DE 20 2014 002 228 U1, the piston is connected to a piston rod extending from the cylinder. The piston rod can come into contact with adjustable equipment parts. The cylinder is connected to the stationary equipment part by its closed end without the piston rod. In the piston, a through hole is provided for the fluid located in the cylinder. Wings rotatably supported on the piston gradually close in the piston with speed or pressure on the piston rod as the equipment parts move relative to each other. As the device parts move away from each other, the spring moves the wings on the piston back and opens the through hole. The cylinder is closed at the open face...

AI Technical Summary

Problems solved by technology

A motion control device is not suitable as a fluid damper for equipment parts that can move relative to each other, as it would cause constant damper chatter, which would slam into each other when the equipment parts were closed

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