Mechanism Diagram | Door Latch

Understanding this mechanism is useful for troubleshooting a sticky door, installing new hardware, or just satisfying your curiosity. Let’s break down the parts using a simple diagram. Below is a simplified view of a standard spring-loaded tubular latch (the most common type in residential homes).

Ever turned a doorknob and wondered what happens inside the door? It’s not magic—it’s a clever piece of mechanical engineering called a door latch mechanism . door latch mechanism diagram