Wheelchair Tray Clamp for Logitech MX Mechanical
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Two clamp-on corners that hold a Logitech MX Mechanical on a wheelchair tray. Lever screws, no tools, no straps.
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Updated at source:
Model information
- Source
- Printables
- Category
- Computers
- License
- Creative Commons — Attribution — Noncommercial
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Two clamp-on corner pieces that hold a Logitech MX Mechanical on the tray of a wheelchair. The keyboard sits at the front of the tray, close to you, and it cannot slide forward off the tray or to the sides.
Who it helps
Wheelchair users who type on a tray, including people with limited hand function or grip strength, and anyone who types on a lap or bed tray where the keyboard keeps sliding away. Everything is printed: no screws, straps or glue, and no tools to fit it.
How it works
- Each corner piece clamps onto the front edge of the tray with a printed screw clamp. It fits trays from 3 to 19 mm thick.
- Each screw has an 80 mm lever instead of a small knob. You can turn it with your fist, your palm or the side of your hand, with no pinch grip, and the long arm gives 2.4 times the leverage of a round knob. It turns all the way round under the tray without touching anything.
- Each piece cradles one front corner of the keyboard: a stop in front, a stop at the side and a small lip over the edge of the case. It leaves 0.35 mm of clearance around the case and does not touch the keys.
- A TPU cap on the tip of each screw protects the tray and adds grip.
- The two pieces together are only 9 mm wider than the keyboard (443 mm in total), so they work on any tray the keyboard fits on.
Designed around the official MX Mechanical CAD dummy from Logitech's Printables profile. The STEP files are included, so you can adapt the clamp opening, the lever or the cradle to your own tray.
Parts
- Left corner and right corner: PLA or PETG
- Lever screw, 2x: PLA or PETG
- Screw cap, 2x: TPU
Print settings
- Corners and screws: 0.2 mm layers, 3 perimeters, 10% gyroid infill, no supports. Print the corners as they are oriented in the files, and the screws standing on their lever.
- Caps: TPU (95A), no supports.
Assembly
1. Push a TPU cap onto the tip of each screw.
2. Thread each screw into the bottom jaw of a corner piece.
3. Hook each corner over the front edge of the tray, one at each end of where the keyboard goes, and turn the lever until the clamp holds.
4. Set the keyboard into the two corners and push it forward until it touches the front stops.
To take the keyboard out, slide it back out of the corners. To move the mount to another tray, turn the levers the other way.
#WheelchairMount #LowGrip #Accessibility #MXMechanical