Compact Gas Spring Design with Temperature Compensation
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Summary
Problems
Existing gas springs with temperature compensation are complex in design, require significant installation space, and often fail to compensate for temperature dependence over the entire application-relevant temperature range.
Innovation solutions
A gas spring design featuring a working piston and compensating cylinder with a single seal between the working and compensating cylinders, utilizing a compensating piston that separates chambers and is guided by a guide element, with a compensating medium and restoring means to maintain consistent spring force across varying temperatures.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If a compensating medium is used to compensate for temperature dependence, then temperature compensation is achieved, but device complexity increases
Why choose this principle:
The patent combines the compensating piston with the working piston into a single integrated component that performs both working and temperature compensation functions. The compensating piston has a first end that interacts with the working chamber and a second end that interacts with the compensating medium, eliminating the need for separate compensating piston components and reducing overall device complexity while maintaining temperature compensation capability
Principle concept:
If a compensating medium is used to compensate for temperature dependence, then temperature compensation is achieved, but device complexity increases
Why choose this principle:
The compensating piston serves multiple functions: it separates the working chamber from the compensating medium chamber, transmits working forces, and responds to temperature changes through the compensating medium. This multi-functional design reduces the number of components needed and simplifies the overall gas spring structure
Application Domain
Data Source
AI summary:
A gas spring design featuring a working piston and compensating cylinder with a single seal between the working and compensating cylinders, utilizing a compensating piston that separates chambers and is guided by a guide element, with a compensating medium and restoring means to maintain consistent spring force across varying temperatures.
Abstract
The invention relates to a gas pressure spring (50), comprising a working piston (2) which is guided displaceably in a working cylinder (1) along a stroke axis (H), a compensating cylinder (12) which encloses the working cylinder (1), and a compensating piston (10) which is of hollow-cylindrical shape and is guided displaceably in the compensating cylinder (12) along the stroke axis (H). The working cylinder (1) has an open end (1b), at which the compensating cylinder (12) forms a projection (15) beyond the working cylinder (1) with a closed end (15b). The compensating piston (10) separates a working chamber (1a) which is arranged in the working cylinder (1), a compensating chamber (12a) which is arranged between the working cylinder (1) and the compensating cylinder (12), and a restoring chamber (15a) which is arranged in the projection (15) from one another and is open at an upper side (10a) of the balancing piston (10) facing the working chamber (1a). The gas spring (50) comprises a seal (8) arranged on the upper side (10a) of the balance piston (10), which seals the balance piston (10) to the working cylinder (1) and to the balance cylinder (12).