New front doors change everything in 4 entryway before and afters.
Inner workings of exterior door lock.
Understanding door lock parts.
The locking mechanism is an intricate series of springs pins cylinders and shafts that work together to secure the door.
Each pair rests in a shaft which is drilled through the cylinder and the housing around the cylinder.
The main parts of a door lock are the cylinder bolt box and strike plate.
Inside the cylinder is a series of small pins of varying length.
Colorado state university mech202 design ii.
The pins are placed in pairs with one on top of the other.
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.
First the visible parts need a brief explanation then the mechanism itself will be looked at.
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.
Rekeying involves realigning the pins and springs in the inner workings of the lock in order to match the lock to a new key.
It s useful for any diy er to know how things around the home operate.
Normal doorknob locks have five pairs of pins which interact with a single key to lock or unlock the door.