Mounting system for wheelchair bag

prusaprinters

<p>When you are in a wheelchair you need some convenient way to store your belongings.</p><p>Many people hang a backpack on the back of the chair. However it is difficult to get something quickly out of it. Also it is difficult to keep an +"eye" on it. Things can be easily stolen.</p><p>You can also hang a pouch under an armrest outside the chair. This has the risk of riding it off or damaging it when you have to go through a narrow passage or it interferes with moving the chair etc.&nbsp;</p><p>Putting it on the inside under the armrest takes precious seating space away.</p><p>In the internet I found a company that has a good solution. Put the bag on a mount on the inside on the top of &nbsp;a foot holder.&nbsp;</p><p>I bought one of these products and immediately wanted to put my own bags on it. So I designed the part that is on the bag. From one comes the other and I reverse engineered also the original design. Especially I changed the mounting system because of availability of parts.&nbsp;<br>I must admit the original method of clamping to the frame of the wheelchair is excellent. My method still needs to be proven in daily use.</p><p>Here is my complete design</p><ol><li>Holder<br>this is the main part it needs to be strong print it with ABS or PETG. 0.2 mm layer, 30% infill, no supports. there is a right hand and a left hand holder. Print the one you need.</li><li>Slot<br>This accepts the plate mounted on the bag. It also needs to be strong. Print with supports everywhere, support distance set to 0.2 mm. Layer height 0.1 or 0.2 mm.</li><li>Locking ring<br>This prevents the bag to dislodge inadvertently. Print with 0.1 mm layer, no supports.</li><li>Base plate.<br>the outside part to be attached with a base plate to the bag you want to use.<br>Print with 0.2 mm layer, supports with 0.2 mm distance, 30% infill.</li><li>Back plates.<br>The inside part of the base plate. I made a big and a small one, depending on the size of your bag.<br>Print with 0.2 mm layer no supports, 30% infill.</li><li>Adapters<br>This is in case the fit of the holder to the frame of the wheelchair is not optimal.<br>I designed three different ones: Normal, small and Oval (for oval tubing). Print 0.1 mm layer, 100% infill, no supports. I added a “base” adapter with sidewalls. It gives better support when tightening the M8 screw.</li></ol><p>Additional material</p><ol><li>1 cm of M10 thread. Cut a slit in one end to be able to put in in with a screwdriver.</li><li>M3 x 10 bolt</li><li>2 Cable binders max 5 mm wide. Use <strong>steel</strong> ones. The plastic ones are stretching too much.</li><li>4 blind rivets (you can also use screws etc.)</li></ol><p>Assembly</p><ol><li>Print all parts, orient them correctly on your build plate.</li><li>Clean up all parts for sharp edges etc. and remove supports.</li><li>Thread the M3 hole.</li><li>Rethread the M10 hole.</li><li>Put holder, slot and locking ring together with the M3 screw. Orient the slot so that it will be vertical with the opening up.</li><li>Select the best fitting adapter or use none.</li><li>Screw the M10 bolt up.</li><li>Mount the holder on the foot rest bar with the tie wraps as tight as you can.</li><li>Tighten the M10 bolt, but not to much.</li><li>Mount the base and back plates on and inside the bag you want to use.</li></ol><p>Attention, this design is only for personal use. It has been reverse engineered from a commercial available product.&nbsp;</p><p>I do not guarantee the sturdiness of the design. It is at the moment in a test phase. You use it at your own risk.</p><p>When you make improvements please share and inform me.</p>