Kiertokääre

Kiertokääre is a Finnish term that translates to "rotating coil" or "helical coil." It refers to a type of coil or spring characterized by its spiral or helical shape. This design allows for a compact storage of material, such as wire or tubing, within a relatively small space.

The geometry of a kiertokääre typically involves a central axis around which a flexible material is wound. The spacing between the coils can vary, influencing the overall length and flexibility of the component. These coils can be made from a variety of materials, including metals, plastics, and even flexible fabrics, depending on the intended application.

Kiertokääre designs are found in numerous applications where a compact, flexible, and often expandable element is required. Examples include flexible electrical conduits, where they protect and bundle wires, or in certain types of actuators and damping mechanisms. They can also be used in medical devices for controlled delivery or retrieval of instruments. The specific properties, such as elasticity, tensile strength, and resistance to bending, are determined by the material used, the diameter of the coil, and the pitch between the windings. Their ability to extend and retract makes them useful in situations requiring controlled movement or space-saving solutions.