Torsion springs and extension springs are both types of mechanical springs, but they function differently and are used in distinct applications.
Torsion Springs:
- Function: Torsion springs store and release angular energy or torque. They work by twisting around their axis.
- Design: These springs are typically helical and have ends that are attached to other components. When those components rotate around the spring's center, the spring exerts a torque in the opposite direction.
- Applications: Commonly used in applications where rotational force is needed, such as in clothespins, garage doors, and vehicle suspension systems.
- Characteristics: Torsion springs are designed to work in a rotational manner, and their performance is defined by the angle of twist and the resulting torque.
Extension Springs:
- Function: Extension springs store and release energy by extending and contracting. They work by resisting a pulling force.
- Design: These springs are also helical but have hooks, loops, or other attachment devices at their ends. They are designed to be stretched from their resting position.
- Applications: Used in applications where a pulling force is required, such as in trampolines, screen doors, and automotive interiors.
- Characteristics: Extension springs are characterized by their initial tension, which is the force required to start their extension, and their ability to return to their original length after being stretched.
In summary, the primary difference lies in their mode of operation: torsion springs operate through twisting, providing torque, while extension springs operate through stretching, providing linear force.