The teeth of the key lodge against the lock pins and even though the pin springs aren t very strong the pins can be unmovable.
Key stuck in door handle.
How to remove a stuck key from your door imagine this.
How to fix a sticking door handle.
You have just come home from a long day with the groceries and your feet hurt and you need a cup of tea and an easy chair in a bad way.
You stick your key in the lock and unlock the door and turn it back to the position for removing the key but the key doesn t come out.
When a key gets stuck in a lock it s usually because the key or the lock mechanism needs lubrication.
The issue a door latch stuck due to a jamming latch will have no real variation between how the latch moves when it is pressed in or when the handle is turned both when the door is open and when it is shut.
Spray lubricant like wd 40 makes a great assistant when attempting to retrieve a key stuck in a lock and most cans come with a tiny straw nozzle for getting into spaces as tight as a keyhole.
If you happen to have some spray lubricant in the car or the garage you can usually unstick the key fairly.