GASOBLOCK is a gas spring with a mechanism that enables the piston rod to be locked at any desired position in extension or compression. It offers high rigidity and resistance against shocks and jerks when the shaft blocked in a particular position.
There are three types of gas springs, depending on the gas and oil chamber configuration:
In this type of springs, one of the compartments is for oil and gas. Due to gas compressibility, the spring exhibits a slight deflection under load and in blocked condition. It generates a suspension type effect, which is useful for applications, such as office chair push back. The deflection depends on the initial force and load applied.
Rigid Blocking in Extension:
In this type of springs, oil and gas compartments are separated by a piston. The oil chamber is located in between the main piston and seal assembly. The gas spring is rigid in extension due to low compression ability of oil. The deflection in extension is practically nil under working load. Some typical applications, like passenger seats, and hospital beds, require these springs.
Rigid Blocking in Compression:
The oil and gas compartments are separated by a piston. The oil chamber is in between the main piston and the bottom of the tube. The gas spring is rigid in compression due to incompressibility of oil. The deflection in compression is practically nil under working load.
GASOBLOCK gas springs can be locked in any position along the length of the stroke. A valve mechanism is incorporated that effects in a locking condition at any position along the stroke of the gas spring.
To summarize, it has the following key advantages over regular springs -
- Smooth, jerk free and a speed-controlled movement
- Light weight, compact and easy installation
- Easy back rest adjustment for optimum comfort for the seat occupant.
How They Work
This fraction is achieved by a plunger that is linked with the rod. When this plunger is pressed, the rod becomes free to operate as compression gas springs. When plunger is released at any point in the stroke, the rod is locked in that position.
These gas springs are designed for rigid and elastic locking in both extension and compression movement. The piston rod of the lockable GASOBLOCK gas spring can be adjusted in every required position of the whole stock by actuating the release pin. GASOBLOCK gas spring provides comfort and secure locking in seating and reclining applications.