A helical Torsion Spring is designed to be twisted rather than compressed and exerts a torque or rotary force. The spring legs (ends of the springs) are available in different configurations to suit the application-specific requirements. The legs of a torsion spring are attached to other components and when the components rotate around the centre of the spring, the spring tries to push them back to their original position. As it winds up, a torsion spring reduces in diameter and lengthens in body shape, which should be considered when design space is limited.
Torsion springs are commonly used in clothes pegs (or clothes pins), clipboards, swing-down tailgates and garage doors, as well as for hinges, counterbalances and lever return applications. Torsion springs are available from Lee Spring in a range of sizes, from miniature springs, used in electronic devices, to large torsion springs used in chair control units.
Lee Spring’s stock range of torsion springs can be specified in imperial or metric units. Consult the Lee Spring catalogue, using the guides and advice to find the right spring to suit your application. If you can’t see what you need, contact Lee Spring to find out about our custom spring design service.