Torsion Springs
This type of spring is a type of mechanical spring. One end of the spring is fixed. When there is a force acting at the other end by twisting and rotating according to the degree of the spring coil's rotation point. Mechanical energy will be stored in proportion to the angle of rotation. And when the rotating torque is released, the spring releases stored mechanical energy in the opposite direction. The torsion spring can be made from round, square, or any shaped spring wire. which generally looks straight. But, in some cases it can be curved or shaped. The torsion spring can be designed to operate in clockwise or counterclockwise rotation. This will affect the direction of the rebound force that needs to be used.

The torsion springs are often used in a variety of applications, such as door hinges, levers, and electrical appliance parts, and various types of machine parts. It is also used in toys, watches, and other consumer products that requires rotational force from small to large. It can be produced from a variety of materials such as stainless steel, steel. and other alloys it depends on the specific usage requirements of each job.