Gas spring

A gas spring and volume technology, applied in the field of gas springs, can solve the problem of no effective volume expansion, and achieve the effect of preventing vibration and lateral displacement
CN1920328AInactive Publication Date: 2007-02-28STABILUS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STABILUS
Publication Date
2007-02-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a gas spring which uses a compensating medium acting on a compensating piston in order to compensate the dependence on temperature of its characteristic. According to a first aspect of the invention, a compensating medium ( 16 M) is selected whereof the critical temperature (TK) is between the lower limit temperature (Tlower) and a temperature exceeding the upper limit temperature (Tupper) of the range of operating temperatures of the gas spring ( 50 ) by up to 100 DEG C, and the gas spring ( 50 ) is designed such that, at an operating temperature (TB) of the gas spring ( 50 ) not exceeding the critical temperature (TK) of the compensating medium ( 16 M), the point indicating the state of the compensating medium ( 16 M) lies on or above the vapor pressure curve. According to a second aspect, in order to simplify the structure of the gas spring ( 50 ), a single compensating piston ( 10 ) which takes the shape of a cup is used and separates the working chamber ( 1 a), the compensating chamber ( 16 ) and the restoring chamber ( 15 ) of the gas spring ( 50 ) from one another.
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Description

technical field

[0001] The invention relates to a gas spring with a working cylinder which, together with a compensating piston arrangement, delimits a working chamber filled with a working medium, and a working rod which protrudes movably through a hole in the working cylinder. Inside the working chamber, where the compensating piston device is driven by the pressure of the working medium and the pressure of the compensating medium and the restoring medium, which is arranged in the compensating chamber and expands when the temperature rises, so that the volume of the working chamber Increase, the reset medium is arranged in the reset chamber, so that the volume of the working chamber is reduced. Background technique

[0002] Gas springs of this type are known in the prior art, the purpose of which is to compensate for the temperature dependence of such gas springs, which are characterized by the use of a compensation medium. As an example, the reader is referred to DE31412...

Claims

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