Folding bunkbed wall support mechanisms for caravans

[cabellos]

Im designing a bunkbed for a caravan and I am struggling to find information about certain mechanisms I could use to support a folding bed against a wall. Please could you offer me some links and advice.

Thanks.

 

[LURCH]

Didn't we already have this thread? Anyways, a cuple of heavy-duty door hinges would work.