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Thread: How to keep DIY roof monitor closed?

  1. #1
    Constant Bitrate BADMOPAR's Avatar
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    How to keep DIY roof monitor closed?

    Hey guys,
    right now I'm trying to put an old 17' LCD monitor in to my car. I have used the original stand mounted on the top of the monitor. One thing I need to help with is how to keep the monitor closed. I was thinking about some kind of latch or magnet, but really I don't know how to do it.

    Original stand

    [IMG] By badmopar at 2011-02-18[/IMG]

    Monitor opened

    [IMG] By badmopar at 2011-02-18[/IMG]

    Monitor closed

    [IMG] By badmopar at 2011-02-18[/IMG]
    I don't wanna be a product of my environment.
    I want my environment to be product of me.

  2. #2
    Variable Bitrate
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    I think you will need some kind of latch, that unit will be too heavy to be held in place with magnets, once you start hitting bumps, it will probably release and drop down on you.

    I'd probably suggest a design based on a house door lock, whereby you have a bevelled slider and striker plate. So the slider fits into a striker plate and socket on the monitor, and has the lower side bevelled so that you can just push the monitor up into the position to latch it, rather than having to use both hands to hold the slider back and push the monitor up.

    As for where to find one? Not too sure, you may have to check out some cabinetmakers supplies, and find something that is close and small enough, but can be cut and molded into a housing. You could probably source a small latch like the ones used to hold back walls on dollhouses or the like.

    Or alternatively, go to a wreckers, and pick up a glovebox and the locking pin off a car, and mould those to suit

  3. #3
    Mod - iPad Forums RipplingHurst's Avatar
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    A latch is safer, definitely.

    Magnets would have to be very strong. There are very strong magnets inside any old HD you might have laying around, you can try those:



    But I feel that if they are strong enough to hold this thing safely, they would be too strong to easily let the passenger use it.

    Or you could use a window latch, like this:



    Not knowing more details on how it's going be fixed in the car it's hard to say for sure.

    Just my 02c, good luck!

  4. #4
    Constant Bitrate tibimakai's Avatar
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    how you will deal with the cables, since those are at the bottom of the display?
    how about those kitchen cabinet door magnets? you could install as many as you need or would fit.
    Last edited by tibimakai; 02-19-2011 at 12:18 AM.

  5. #5
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    I still think the magnets are a bad idea.

    You don't want this thing dropping down if you hit a pothole, or a speed bump. Something that size swinging down from the roof when you aren't expecting it is going to cause an accident, and magnets just aren't reliable enough for something that big.

  6. #6
    MySQL Error soundman98's Avatar
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    Quote Originally Posted by tibimakai View Post
    how you will deal with the cables, since those are at the bottom of the display?
    how about those kitchen cabinet door magnets? you could install as many as you need or would fit.
    i don't think this is too much of a issue-- most graphic chipsets allow for image rotation, so the bottom becomes the top..


    for the latch design, i think riplinghurst's idea is going to be the most elegent-- all that is required is a small slot in the screen case..

    but for some other ideas:
    i have these latches on some industrial cabinets (used to be in a mobile media trailer), and i can verify that the design is truly adjustable-- so much so that you can go between the cabinet falling open, and never opening...(it uses a spring inside, so you could also replace the spring with different ones if you needed a stiffer resistance)

    http://www.thehardwarehut.com/catalo...php?p_ref=4539



    then there is something like this, albiet a lot less elegent..
    http://www.thehardwarehut.com/catalo...php?p_ref=4533


    or this:
    http://www.thehardwarehut.com/catalo...p?p_ref=259876
    Last edited by soundman98; 02-19-2011 at 09:46 AM.

  7. #7
    Constant Bitrate BADMOPAR's Avatar
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    Thank you guys very much for your input. I think that I have found working solution. Like Chester said, I have pulled out glove box locking mechanism from my old Chrysler Voyager and here is the result.





    tibimakai

    how you will deal with the cables, since those are at the bottom of the display?
    I'm not sure, at this time. Maybe I try to put the cables upwards over the hinge or somehow extend those flat cables and place the circuits boards outside the monitor. This method is my favorite, but again I don't know how to do this.
    I don't wanna be a product of my environment.
    I want my environment to be product of me.

  8. #8
    MySQL Error soundman98's Avatar
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    i wouldn't recommend that-- for a example, refer to all the problems everyone has with the flip-up monitors.. most do essentially the same thing(brains are in the chassis, 'dumb' screen moves in/out), and there are always problems later with those cables breaking.

    while the vga cable might suffer from that as well, vga cables are super cheap, and really easy to locate, whereas, that thin little ribbon cable can be a lot tougher to find, and could be more expensive..

  9. #9
    Constant Bitrate BADMOPAR's Avatar
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    Quote Originally Posted by soundman98 View Post
    i wouldn't recommend that-- for a example, refer to all the problems everyone has with the flip-up monitors.. most do essentially the same thing(brains are in the chassis, 'dumb' screen moves in/out), and there are always problems later with those cables breaking.

    while the vga cable might suffer from that as well, vga cables are super cheap, and really easy to locate, whereas, that thin little ribbon cable can be a lot tougher to find, and could be more expensive..
    You are right, but there is one more thing to consider - the weight. I'm worried that the monitor could hit somebody during crash.
    I don't wanna be a product of my environment.
    I want my environment to be product of me.

  10. #10
    MySQL Error soundman98's Avatar
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    hmm, a valid point, but isn't most of the weight in the screen from the lcd portion, and not the circuit boards?

    if the lcd portion makes up most of the weight, i don't know if removing a couple of grams of circuit boards would be enough to justify the work.

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