Since I cannot display a dynamic image, I will construct a by breaking down a typical technical diagram. This review covers the anatomy, mechanical function, common failure points, and material composition as you would analyze them in an engineering schematic.
Here is a simplified diagram of a typical door latch mechanism: door latch mechanism diagram
[Door Edge] | | (Faceplate) | +---------|---------+ | | | | [Latch Bolt]--- (Beveled side faces strike plate) | | | | +----|----+ | | | | | | | [Spring] | | | | | | | +----|----+ | | | | | [Spindle] <------- (Connected to doorknob shaft) | | | | +----|----+ | | | [Cams] | | | | (Inside) | | | +---------+ | | | +-------------------+ (Latch body hidden inside door) Since I cannot display a dynamic image, I
Below is a simplified view of a standard (the most common type in residential homes). common failure points