Fersenverriegelung

Fersenverriegelung is a term used in German engineering to describe a locking principle in which a component is secured by engaging a feature located at the rear end, or heel, of a mating part. The concept is generic and can be applied in various sectors where reliable axial or angular retention is required. The exact geometry and implementation vary by application, but the common idea is to create a positive engagement between a locking element and a rear surface or groove at the opposite part.

Principle and operation: A locking element, such as a pin, bolt, latch, cam, or wedge, engages with a corresponding recess, groove, notch, or undercut situated at the heel of the counterpart. The engagement can be sprung, spring-assisted, or manually released. In many designs, the heel feature provides a defined stop and prevents unintended withdrawal or rotation of the connected parts.

Construction and variants: Fersenverriegelung designs range from simple spring-loaded plungers and wedge locks to cam-operated latches and toggle mechanisms. Materials commonly include steel alloys, high-strength plastics, or composite systems, often with surface treatments to reduce wear and corrosion. Depending on the use case, sealing, dust exclusion, and damping elements may be incorporated to improve performance.

Applications and advantages: The mechanism is used in modular assemblies, tool holders, securing panels and doors, furniture fittings, and certain automotive or aerospace components where a compact, reliable fastener is needed. Advantages typically include a low profile, quick engagement and release, and secure retention. Disadvantages may involve wear of the heel or groove over time, alignment sensitivity during assembly, and potential debris ingress.

See also: Verriegelung, Verstellelemente, Sicherungselemente, Klemmsysteme.