Push button mechanism for a time piece

摘要

The pushpiece mechanism for a timepiece comprises pushpiece return means arranged so that the force applied to the pushpiece passes through a maximum at an intermediate position thereof between a rest position and the pushed-in position of the pushpiece. To this end the return means are provided with two bearing elements arranged to cooperate with one another and comprising respectively a beak and a heel coupled by an elastic member, such bearing elements and elastic member being formed as a single piece. The mechanism may be applied in particular to electronic timepieces including a chronograph function.