Torsion Springs

Torsion Springs, whose ends are rotated in an angular deflection, offer resistance to externally applied torque. The wire itself is subjected to bending stresses rather than torsional stresses, as might be expected from the name.

Springs of this type are usually close wound, reduce in coil diameter, increase in body length as they are deflected. Special types of torsion springs include double torsion springs and springs having a space between coils to minimizes friction.

Most common materials used in these type of springs are round wire, square and rectangular wires. Automotive applications of these type of springs include windows regulators, seat recliners, door handles, pedals, mechanical assemblies, etc.