Pull switch for automotive use (brake switch, kickdown swith etc.)

thingiverse

This switch was primarily designed to serve as a kickdown switch. A key component of this switch is actually the safety door switch or microwave door switch, which is commonly referred to by those names. The black design represents the latest iteration, employing one door switch and two springs to keep the trigger in place when it's not being pulled. The 3 pieces of M3x15mm screws (18mm is the maximum length unless you want them protruding from the other side) are used to secure the switch. This setup releases the switch when the trigger moves 1,5-2mm outward and allows for an additional 8-9mm of movement before reaching its maximum stretch point. To achieve more movement beyond this point, it's suggested that you use a stiffer spring. Both NC (normally closed) and NO (normally open) connections are typically found on the switch. The grey design is the initial version I created but ultimately abandoned. Some linkage was also included in this design, which may still be useful to someone.