Push button actuator for retractable pen, has profiled hinged cam, and a follower in the form of a hook shaped pin that is hinged onto the push button

摘要

The push button actuator has two stable positions that changeover each time it is pressed. The cap (1) is spring loaded onto a base (3). The two positions are provided by a mechanism that has a profiled hinged (352) cam (37) The follower is in the form of a hook shaped pin (2) that is hinged onto the push button.