Synchronizer actuation assembly

A synchronizer actuation assembly for actuating at least one synchronizer member, the synchronizer actuation assembly comprising:

• a barrel cam including at least one cam groove that circumscribes the barrel cam and defines at least a neutral position and a first engaged position, wherein the barrel cam is rotatable in a first rotational direction and a second rotational direction;
• at least one shift fork having a first end portion and a second end portion, wherein the first end portion is disposed in the at least one annular groove of the barrel cam and the second end portion is forked for controlling the synchronizer member;
• a hydraulic piston assembly including a housing and a piston, wherein the piston is disposed in the housing and is positionable between a first position and a second position;
• and
• a motion converter including a translatable input member engaged with the piston of the hydraulic piston assembly, a rotatable output member rotatably coupled with the barrel cam, and a direction selection mechanism, wherein the translatable input member is selectively rotatably coupled with the rotatable output member, and wherein the direction selection mechanism has a first state and a second state, and
• wherein a movement of the piston rotates the barrel cam in the first rotational direction when the direction selection mechanism is in the first state, and wherein a movement of the piston rotates the barrel cam in the second rotational direction when the direction selection mechanism is in the second state wherein the hydraulic piston assembly includes a biasing member that urges the piston to the first position.

A synchronizer actuation assembly for actuating at least one synchronizer member, the synchronizer actuation assembly comprising:

• a barrel cam including at least one cam groove that circumscribes the barrel cam and defines at least a neutral position and a first engaged position, wherein the barrel cam is rotatable in a first rotational direction and a second rotational direction;
• at least one shift fork having a first end portion and a second end portion, wherein the first end portion is disposed in the at least one annular groove of the barrel cam and the second end portion is forked for controlling the synchronizer member;
• a hydraulic piston assembly including a housing and a piston, wherein the piston is disposed in the housing and is positionable between a first position and a second position;
• and
• a motion converter including a translatable input member engaged with the piston of the hydraulic piston assembly, a rotatable output member rotatably coupled with the barrel cam, and a direction selection mechanism, wherein the translatable input member is selectively rotatably coupled with the rotatable output member, and wherein the direction selection mechanism has a first state and a second state, and
• wherein a movement of the piston rotates the barrel cam in the first rotational direction when the direction selection mechanism is in the first state, and wherein a movement of the piston rotates the barrel cam in the second rotational direction when the direction selection mechanism is in the second state wherein the motion converter includes a selective direction one-way clutch.