spiralfjäder

Spiralfjäder, also known as a helical spring, is a mechanical device made from a coiled elastic material, typically wire or rod. The most common type is the compression spring, which shortens when subjected to a compressive force and returns to its original length when the force is removed. Extension springs are designed to stretch under tension and store energy. Torsion springs are used to apply a turning or twisting force.

Spiralfjädrar are found in a vast array of applications due to their ability to absorb shock, store energy, and provide a constant force. They are integral components in vehicle suspension systems, helping to smooth out rides by absorbing bumps and vibrations. In everyday objects, they are found in ballpoint pens to retract the tip, in door hinges to assist closing, and in mattresses for support and comfort. Industrial machinery also relies heavily on spiralfjädrar for everything from actuators and valves to conveyor belts and shock absorbers.

The properties of a spiralfjäder, such as its stiffness (spring rate), length, and diameter, are determined by the material used, the wire's diameter, the number of coils, and the coil's diameter. These parameters are carefully calculated during the design phase to ensure the spring performs optimally for its intended purpose. The manufacturing process typically involves winding the wire around a mandrel and then heat-treating it to achieve the desired strength and elasticity.