Push button

A push button comprising:

• a hollow pusher capable of sliding, along a movement axis, between a rest position and a depressed position, this pusher comprising, on one side, a pressing face and, on the opposite side, a lower stop that extends in directions perpendicular to the movement axis, the rest position corresponding to the position occupied by the pusher when no external pressure is being applied to the pressing face of the pusher,
• a fixed body comprising a collar inside which the pusher slides when it moves between its rest position and its depressed position, this collar comprising a lower face against which the lower stop of the pusher bears in the rest position to retain the pusher inside the collar,
• a bayonet coupling for mounting the pusher inside the fixed body, this bayonet coupling to this end comprising:
• a bayonet mechanically connected to the pusher so as to be angularly moved by rotation of the pusher about the movement axis between:
• a locked position, in which the bayonet bears against the collar to retain the pusher in a position mounted inside the fixed body, and
• a free position, in which the pusher can be dismounted and removed from the fixed body,
• notches made in the collar to allow the bayonet to pass through this collar when the bayonet is in its free position,
• a spring that, in the locked position, is capable of keeping the bayonet bearing against the collar and bringing the pusher from its depressed position to its rest position,
• wherein:
• the pusher has two facing slots that each extend mainly parallel to the movement axis,
• the bayonet coupling comprises a bar that passes through the two slots of the pusher and the ends of which, which project beyond the pusher, each bear against the upper face of the collar, this bar being capable of sliding inside these two slots when the pusher is moved between its rest position and its depressed position,
• the spring of the bayonet coupling is entirely accommodated inside the hollow pusher between an internal face of the pusher and a central portion of the bar situated between its two ends, and
• the bayonet of the bayonet coupling and one from among the bar and the lower stop form only a single, same component.