Software Coder's Stand Designs for a Touch Screen Display and PC: Review Needed!

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Discussion Overview

The discussion revolves around the design and stability of a stand for a touch screen display and a PC. Participants are reviewing the structural integrity and stability of the stand, which is constructed from welded steel tubes, and providing suggestions for improvements. The focus includes considerations of weight distribution, center of gravity, and user interaction with the touchscreen.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Exploratory

Main Points Raised

  • One participant notes that if the entire structure is within the footprint of the base, it should stand without needing to calculate the center of mass.
  • Another suggests that the stability may be compromised by user interaction with the touchscreen, recommending additional support at the base to counteract the forces applied when users press on the screen.
  • A participant questions the weight of the PC, suggesting that relocating it to the base could lower the center of gravity and enhance stability. They also propose adding gussets or struts at the joints of the vertical sections and base for added strength.
  • Adjustable feet on the stand's bottom frame are recommended by another participant to ensure stability on uneven surfaces, with a suggestion of using six feet for better support.
  • The original poster acknowledges the feedback and mentions making changes to the design, including adding struts, but expresses uncertainty about how adjustable feet work. They clarify that the total expected weight includes additional items beyond the PC.
  • A later reply emphasizes that the struts should be oriented diagonally for increased strength and reiterates the importance of adjustable feet to accommodate uneven flooring.

Areas of Agreement / Disagreement

Participants generally agree on the importance of stability and suggest various modifications, but there is no consensus on the best approach to achieve this, as different participants propose different structural enhancements and configurations.

Contextual Notes

Some limitations include uncertainty about the exact dimensions and materials of the stand, as well as the specific design of the adjustable feet. The discussion also reflects varying interpretations of how user interaction might affect stability.

cas97
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Hello I am a software coder, I have a touch screen display and I am building a stand for it. But I am not sure if it will stand or fall! :O

Can anyone review these designs? There is a PC behind the screen. I will make the stand with welded steel tubes (not sure which size)

Display: 15 Kg
PC: 20 Kg

Thank you very much!

https://dl.dropboxusercontent.com/u/6201898/Stand/stand01.JPG

https://dl.dropboxusercontent.com/u/6201898/Stand/stand02.JPG

https://dl.dropboxusercontent.com/u/6201898/Stand/stand03.JPG
 
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It looks to me like the entire thing is within the footprint of the, well, feet. Is that true? If so, you don't even have to calculate the COM to know it will stand.
 
The only issue would seem to be how hard people will be pushing on the face of the touchscreen. Maybe add some extra extension to the base in the back to account for the moment due to people pressing on the touchscreen?
 
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20kg PC? That seems heavy..
In addition to berkemans suggestion, moving the PC to the base will lower the COG and make it more stable. I'd also suggest gussets or struts where the vertical sections meet the base, depending on the tube you use.
 
I'd suggest using adjustable feet on the stand's bottom frame. A total of six would probably do it. If you try to stand this using the "flat" bottom of that welded frame, you'll be hugely disappointed.
 
Thank you all for your suggestions, I made some changes, I hope this is more robust!
Not seen in the pictures are struts and I don't really understand how adjustable feet work. But is no longer "flat" (hope I got that one right)
Also I think the feet of the user will go between the frame. You can see a couple footprints there.
20 Kg is the total weight I expect, not only the computer, but other items like tools.
Here is the image: (it seems it will stand after all)
https://dl.dropboxusercontent.com/u/6201898/Stand/stand04.JPG Also, a couple of renders of a trade show where I plan to use it, hope you like it :)
https://dl.dropboxusercontent.com/u/6201898/Stand/modelo02VIVA%202015-03-16%2019531900000.jpg

https://dl.dropboxusercontent.com/u/6201898/Stand/montaje01.jpg Thanks again, I hope I have your approval to proceed to production
 
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The struts that you say are not shown should be oriented diagonally, and not like the vertical/horizontal like the ones you do show. The structure will be stronger that way:

images?q=tbn:ANd9GcRzasBBeYkeZyl5So9ckw6HEBqOcXto1MQoQ9jNmIcGi4uTySl_.png


For the "feet", it's good to use something like the following, because the bottom of your frame, or possibly the floor where you set up, will not be perfectly flat:

images?q=tbn:ANd9GcR5A-HMZXb4z0HX1BGChKyuyLm2tZMajnmpvrXLxr0tQvBJ6RiFEg.jpg


Best to use adjustable ones, so that you can get all four (or six, if you follow Travis King's earlier suggestion).to make contact with the floor.
 

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