Inside the cylinder is a series of small pins of varying length.
Inner workings of exterior door lock.
The pins are placed in pairs with one on top of the other.
Understanding door lock parts.
The lock prevents the spindle of the bolting mechanism from retracting from the door frame making it impossible to open the door.
What is seen besides the handle is the deadbolt knob the inner and outer panels the key entry the bolt plate and the bolt itself.
The main parts of a door lock are the cylinder bolt box and strike plate.
Each pair rests in a shaft which is drilled through the cylinder and the housing around the cylinder.
Each type of lock is built differently but let s take a look at the anatomy of a typical door lock usually used in homes or light commercial buildings.
On doorknobs that have a lock it is employed by a small lever or push button on the interior handle.
The locking mechanism is an intricate series of springs pins cylinders and shafts that work together to secure the door.
First the visible parts need a brief explanation then the mechanism itself will be looked at.
Colorado state university mech202 design ii.
New front doors change everything in 4 entryway before and afters.
Rekeying involves realigning the pins and springs in the inner workings of the lock in order to match the lock to a new key.