A spring that is wound into a vortex shape with various ribbon-shaped materials is called a vortex spring, also known as a clockwork. When the external force causes the spring to be tightened, energy is stored; when working, the deformation energy is gradually released, and the drive mechanism operates to perform work. In the free state, the vortex spring has no contact between the ring and the ring. Generally, the angle of use is not more than 1 ring (360°); the power spring is slightly different, except for the spring rotation and the part connected to the axis of the housing, the free state The lower ring and the ring are closely attached to each other, and are installed in various types of shells or containers, and the use angle can be more than one ring.

Surface: galvanized, nickel-plated, gold-plated, electric painting, phosphate, black dyed, copper-plated, electroless nickel.