Hydro-pneumatic lift mechanisms that contain both liquid and gas are multifunctional gas springs. They allow us to raise, lower, support, and move heavier or more complicated objects.
While they’re most often found in various configurations of door hardware they have many other potential uses. Gas springs can be found in vehicles, supporting adjustable chairs, and tables, on easy-open panels, and in small electronic devices.
These springs use pressurized gas, along with an oil-based grease, to support or resist a variety of external forces. The compressed gas allows for controlled storage and release of energy. This is done via a smooth, cushioned movement that is transferred via a sliding rod and piston.
You may also call them gas struts. Rams, dampers, or gas rams. But some of these terms are specific to a set of components. They can be configured and used in specific ways. Technically, a standard gas spring is used to support objects moving at a speed of about 0.5 mph. A gas damper is used for controlling or limiting that motion. A damped spring can handle some of both.
Why Are Gas Springs Used?
Gas Springs For Doors
Many door types can benefit from gas spring applications. It’s not surprising that there are so many options to choose which type of strut is best for each scenario.
To help them open and close quickly under pressure, the doors of your home, school, or workplace usually have traction or pull-type gas spring. Cabinet doors and access hatches require the exact opposite function. They allow for considerable weight to be lifted and can remain open until manually pulled closed.
A locking spring could be used in both cases. It allows the door’s position to remain open or closed halfway. For doors with folding mechanisms, a variable speed gas strut may be required to smoothen operation.
The type of job that you want your door gas struts to do after they have been mounted will determine the right type. It is important to know what action you want and how much force you need before choosing which gas spring product.
Gas Springs For Cars
There will be multiple gas springs used in different hoods, panels, and compartments. But the most popular use of these gas springs is in boot-lifting mechanisms. Nearly all hatchbacks, estate cars, and most sedans will have gas struts attached to the rear assembly. These gas struts help to lift, support, and lower heavy tailgates easily and quickly.
The action of most car-fitted gasoline springs is so subtle that many drivers don’t realize that they raise the tailgate rather than just holding it in position once it’s up. When these gas springs wear down, it’s easy for drivers to see how heavy they are lifting. Particularly with estate-type rear doors, where it can feel quite heavy, especially if the gas struts need to be replaced.
Chairs Gas Springs
Most office chairs have gas springs that are more “damping”. This is because the chair’s resistance decreases with elevation and increases with lowering. This helps cushion the seat’s downward movement when you are seated in it but allows it to spring back to the starting position without any manual force when empty.
Nearly all office chair gas springs are lockable in some way or another. However, it is important to note that sometimes the spring and the locking mechanism can be completely separated. These struts are not designed with locking mechanisms. Instead, the lockable part acts like a quick-release clamp around the sliding central columns.
Both styles are equally capable of holding a comfortable position and are easy to adjust.