Hidden Door Latch

I am looking for a secret "latch" to open/close a bookcase that covers a hidden door. There are some nice electromagnet types but they are expensive and need power. Any ideas on a "Chinese puzzle" type of thing where you move a couple of things and it opens? I don't want the classic horror movie things like move a book, lever or statue 'cause that's the first thing someone would try. Just fishing for ideas!

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Toga_Dan3 years ago

I dont know how to make it happen, but i liked the use of piano keys in batman. What are the odds that someone would randomly come up with using the same set of keys?

Greenehouse (author) 3 years ago

Thanks Paul for the link and info!

Paul J3 years ago

Try this


dataphool7 years ago
My solution to this problem is:

As you can see in my crude diagram, a magnet separated from the ferrous metal iron pellet so that it is not quite attracted to the magnet.  An approaching  iron mass, a hammer, paper weight, maybe a stapler, will strengthen the magnets pull and cause the lever to pivot causing an action at the other end.

The whole is kept from view by a thin panel.

Hidden Latch.bmp
dagdon8 years ago
My desk has a locking feature with a key for center drawer. when close drawer all the way-- a detent beyond just "closed" -- you can lock center drawer and all other drawers are latched shut (locked too). Because its old and has moved several times, bottom drawer never seemed to open -- it seemed stuck in the closed and locked position. One day I discovered, when all other drawers are closed and latched (center drawer to detent position), then the bottom drawer is operable. It has been my secret compartment ever since that discovery. Just think contrary.
Goodhart9 years ago
There is always the "key and lock" idea too. But instead of your normal looking key (and keyhole) one could form an "ornament" that fits within a hung "decoration" that is actually a lock and keyhole. Or, there is the old standby of a book that is in the bookcase that has been "solidified" internally (pages glued together to make it stronger) to use as a release mechanism....
a lever with a magnetic end would work and maybe a spring to hold the latch tight.
Yes, or one could even use the spring to close the latch and a magnet as a key to open it.
Yes, I think that some of those hidden door that I have seen on tv. You would move a statue or any thing that could hold a magnet over the latch to open it.
Greenehouse (author)  Goodhart9 years ago
Hummm, I like that idea. Maybe I could fashion a key/tool that would go into a keyhole that would push a button to release or lock the mechanism. If it was pushing a lever then I wouldn't need electricity. There might be two holes, one to open and one to close the locks. The simpler the better.
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