This design is widely available online.
How does a travel door lock work.
The reason for passkeys is the convenience for rv manufacturers transport drivers and rv dealers.
Older rvs can often suffer from jammed locks as they age.
Look for a small letter c d e etc next to the keyhole.
The key to match the particular lock lifts the pins to the correct height to allow the latch the part that protrudes into the door frame to be pulled back against the spring allowing the door to open.
Global locks have a small lip that can jam and keep the door from opening.
When the door is unlocked a part called a tang is resting fully inside of the cylinder.
Start by jiggling the key around to see if you can get it to click.
For decades the main latch knob of rv entry door locks has been keyed with master keys also known as passkeys.
Inside the cylinder are all the parts that work together with the key to lock or unlock the door.
I am making one for a friend who is travelling somewhere with a history of people breaking into hotel rooms.
There is also quite a good diagram on this site in the section called how do yale locks work showing how the pins line up when the key is inserted.
If you see a letter this indicates which lettered passkey will unlock it.
The key card uses a magnetic stripe that contains information that grants access to a particular hotel room door lock.
I just wanted to document my make of a travel lock for hotel rooms.