Antivibration device and mechanical assembly comprising such antivibration device

A mechanical assembly comprising:

• a vehicle motor;
• a vehicle chassis;
• an antivibration mount having a first rigid strength member fastened to the vehicle chassis, a second rigid strength member and an elastomer body interposed between said first and second strength members, said elastomer body withstanding a permanent compression effort in a vertical direction and being designed to damp vibrations at least in said vertical direction, said second strength member including two lateral ears which protrude laterally from said elastomer body and which are pierced respectively by two parallel holes;
• and a motor bracket extending between a first end which is fastened to a vehicle motor and a second end which is fastened to said ears by screwing;
• wherein the second end of the motor bracket includes two parallel branches each having a reception housing which is open downward, said reception housings receiving respectively the two lateral ears of the second strength member of the antivibration mount, and each of said branches having a hole which registers with the hole of the corresponding ear, two fastening screws traversing respectively said holes of the branches of the motor bracket and being received in said holes of the ears, the holes of the branches of the motor bracket and of the ears of the antivibration mount being oriented in a direction extending slantwise upwardly away from the first end of the motor bracket.