Riegelsystem
Riegelsystem, literally “bar system” in German, is a term used in mechanical engineering and security hardware to describe a family of locking mechanisms that rely on rigid bars (Riegel) to secure a component against unwanted movement. The exact form and function vary by application, but the underlying principle is a sliding or rotating bar that engages a keeper.
A typical Riegelsystem comprises one or more Riegel elements that slide, rotate, or pivot into a fixed
Applications range from door hardware and window guards to safes, cabinets, and safety enclosures on machinery.
The term appears most commonly in German-language technical literature dating from the 19th and 20th centuries.
See also: bolt lock, crossbar latch, door hardware. This article is a general overview; for a precise