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Belly pan must be strong enough to support the full weight of each occupant, this will be covered by floor panels |
10.4 - Fastener
All fasteners must be of suitable type, strength, and durability for their application. Friction, glued, or press fit assemblies will not be accepted in critical areas (as defined in 10.4.E) as the sole means of retention. For glued of press fit assemblies a pin is required. The pin diameter shall be 1/4 of the tube’s outer diameter. A press fit roll pin is acceptable for this application. Set screw intended to transmit torque of force will not be accepted.
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Concept 2 improves on Concept 1 by introducing a degree of freedom . However, the design would be improved with some way to rotate the holding plate in the Z-axis (if the Z-axis is up)- a linear movement in the X-axis. This is achieved through the extending rods. In the concept sketch it shows rods, though I think the best course of action would be to use square tubing. In assembly/manufacturing of the mechanism we would join the two plates to the chassis and to the sheet metal. Then, on a square tube mark the gap that would need to be filled and weld everything together (square tube to chassis plate, and square tube to sheet metal attachment plate).
This manufacturing process would allow for gaps between sheet metal and chassis to be rectified and allow for potential rotations in the Z-axis. As a side note, some of the adjustments to ensure a good fit can come from cutting the sheet metal correctly.
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A flaw with this method would be the lack of space to put a welder in to bond the joints, assuming the gaps are very small. This would be fixed by removing the chassis plate and welding the square tubes directly to the chassis. If the gap would still be too small, the square tubes would be welded to the chassis and a slotting mechanism would be made between the square tube and the sheet metal attachment plate. This concept will be getting a sketch soon.
Any suggestions would be great!