Mechanical Engineering for collapsible spring keychain toy
Mechanical engineering for a keychain toy.
(see drawing) toy is a conical spring inside a plastic twist-lock cylinder.
When opening the lid, the spring extends to full length. To close the lid the spring has to be pressed onto the lid to collapse, the lid can be closed.
Lid is closed by simple push-twist lock (like BNC connector or any other suggested mechanism)
Engineer would be asked to:
1. Review suggested concept & suggest changes (if any)
2. Design for manufacturing inc. material selection