Volute Spiral Springs is divided into contact vortex spring and non-contact vortex spring. For example, the tape measure in life is fixed by the mandrel and one end is pulled out for use. This kind of spring is called a spring spring or a constant force spring. The other is a non-contact vortex spring. This spring is often used in car seat recliners. We adjust the angle of the seat by twisting the car seat recliner.

The volute spring, also known as the spring spring / clockword spring, is a variant of the torsion spring and also works through torque.

Main application directions: car electric lift doors, seat back springs, winding box springs, yachts, lawn mowers, chainsaws and other engine starters