The invention relates to a dual clutch mechanism having a longitudinally oriented rotational axis, comprising a combined control device (12) that comprises a first fork (88) and a second fork (90) mounted so as to be mobile about a first axis (O1) supported by first hinge means (106) and about a second axis (O2) supported by second hinge means (122), respectively, characterised in that said control device (12) has a reduced overall size due to the design of said forks (88 and 90) and of the associated hinge means (106, 206, 122, 122A, 122B, 222A, 222B).