fjäderbelastad

Fjäderbelastad is a Swedish term used in engineering and technical contexts to describe a component or mechanism that is biased or held in a particular position by a spring. The word combines fjäder (spring) and belastad (loaded, biased), and indicates that a spring provides the primary returning or holding force.

A fjäderbelastad mechanism typically stores energy in a spring when displaced and uses that energy to move parts, maintain a default position, or create a rapid action when another force is released. The exact behavior depends on the type of spring (compression, extension, torsion), its preload, orientation, and the linkage involved. Designers consider material properties, fatigue life, temperature, and safety margins.

Common applications include spring-loaded detents and safety features in locks, relays and electrical contacts, and return or indexing mechanisms in machinery and tools. In consumer devices, fjäderbelastade components are found in retractable mechanisms, switches, and snap-fitting closures. In firearms and certain safety devices, fjäderbelastad parts (for example springs driving hammers, triggers, or safeties) are used to ensure a ready but controllable action, governed by strict standards and safety practices.

In Swedish technical language, fjäderbelastad emphasizes the presence of a spring force as a central design element, distinguishing from gravity-biased or friction-based systems.