Patent ID: 8115131

Claim:
A switch for selectively establishing a first conductive way between a first conductive fixed contact and a second conductive fixed contact or a second conductive way between the first conductive fixed contact and a third conductive fixed contact, the switch comprising: a housing; a pushbutton extending out of the housing and comprising a driving portion formed by an extension extending into the housing, the pushbutton being arranged, when an external force is applied to the pushbutton, to be moved relative to the housing between: a first pushbutton active position in which the first conductive way is established, and a second pushbutton active position in which the second conductive way is established; a conductive unit which is fixed with respect to the housing and which includes the first, second, and third conductive fixed contacts; and a switching unit comprising: a conductive swaying element, wherein a first end of the conductive swaying element is pivotally engaged with the first conductive fixed contact, and a second end of the conductive swaying element is arranged to selectively electrically connect the first conductive fixed contact to either the second or the third conductive fixed contact, and a traction spring having a first end operatively connected to a driving point of the pushbutton and a second end secured to the swaying element; a tilting lever comprising a first end pivotally engaged with the housing and a second end delimited by a first driving inner wall and a second opposite driving wall, wherein when the pushbutton is in the first pushbutton active position, the first end of the traction spring is in a first spring position and the traction spring causes the swaying element to electrically connect the first and second conductive fixed contacts, and when the pushbutton is moved to the second active pushbutton position, the first end of the traction spring is moved to a second spring position and the traction spring causes the swaying element to move to electrically connect the first and third conductive fixed contacts, and in which: the switching unit is bistable between the first and second positions of the swaying element, the switch comprises a return spring which is disposed between the housing and the pushbutton, and when an external force applied to the pushbutton is removed, the pushbutton is returned back to its original first active position by the return spring.