This utility model discloses a rear end cover device for a
vacuum servo motor, including a rear end cover body fixedly connected to the
vacuum servo motor body, a first rolling bearing disposed in the center of the rear end cover body and sleeved and connected to the rotating shaft of the
vacuum servo motor, a hollow armature connector mounting seat disposed at the rear end of the rear end cover body, an armature connector disposed in the armature connector mounting seat and coaxially arranged with the rotating shaft of the vacuum
servo motor, and a first connecting plug disposed on the armature connector mounting seat and electrically connected to the armature connector; the armature connector includes an armature mounting seat fixed in the armature connector mounting seat, several reset support assemblies fixedly connected at one end to the armature mounting seat, an armature coil
assembly fixed at the other end of the reset support
assembly, and an armature sleeved on the reset support
assembly and placed between the armature coil assembly and the armature mounting seat.