Torsion Springs

Torsion springs are helical springs that make use of its torque or rotational force. Torsion springs will typically have ends or legs that when rotated or twisted around its center, stores energy and offer resistance to an externally applied source. The limits of the torsion values are dependent on the bending stresses of the wire and not necessarily the torsional stresses. Torsion springs are usually close wound and will reduce in coil diameter, increase in body length during the action of rotation or also known as the angular deflection.

Tips for Designing a Torsion Spring:

Some of the key considerations in the design phase are the effects of friction and the arm deflection on the torque. To reduce the effects of friction, the design may include a pitch (the amount of space between each coil), and the inside diameter should be sufficient to provide clearance when maximum deflection is applied. The leg end configurations are limitless here, but careful consideration should be used if cost is a factor. The design ends can be as simple straight legs, hooks, or angular bends and may assist or aid with part retention. More complex geometries are possible such as full or multiple loops or a number of offsets in order to fit the assembly designs. Any design considerations can be discussed with one of our design consultants.

Torsion springs or torsional springs are used in many different applications and you can typically find them in all major household appliances, medical devices, military/aerospace applications plus many more.