A compression spring is a helical spring that withstands directional pressure. Its material cross-section is mostly circular, but it is also made of rectangular steel or multi-strand steel. The pitch of the spring is usually equal. Compression springs come in cylindrical, conical, convex/concave, and a few non-circular shapes, with a certain gap between them. When subjected to an external load, the spring contracts and deforms, storing deformation energy.
These products are widely used in electronics, motors, computers, information technology, locomotives, bicycles, hardware tools, gifts, toys, and even the defense industry. Their design and principles are easy to grasp, and manufacturing control is simple. Tension springs can directly suspend heavy objects or extend from a sleeve supported by the upper end of the sleeve.
