Electrical switch having a variable return force

An electrical switch system comprising:

• a contact-bearing support configured to delimit a recess in a substantially horizontal bottom, wherein at least two fixed electrical contacts are positioned in the recess;
• at least one dome-shaped first triggering device configured to be elastically deformable, in a substantially vertical direction, from a top rest position to form an electrical link between the at least two fixed electrical contacts;
• an actuating push-button mounted to be displaced substantially vertically downward relative to the support, from a rest position in which the push-button is not in contact with the first triggering device, to a number of successive positions, including a first actuating position of contact with the first triggering device, and a second actuating position in which the push-button acts on the first triggering device so that the first triggering device is elastically deformed to make the electrical link between the at least two fixed electrical contacts;
• a mechanism configured to return the push-button to the rest position, wherein the mechanism is configured to exert an elastic return force on the push-button, wherein the elastic return force is directed substantially vertically upward;
• and
• an elastic element configured to exert an elastic force on the push-button, wherein the elastic force is directed upward when the push-button is displaced downward beyond a contact position.