Gearbox actuator unit and gearbox

A gearbox (10) comprising:

• a gearbox housing (12),
• at least one shift fork (18, 20) disposed within the gearbox housing (12),
• a gearbox actuator unit (14) installed on the gearbox housing (12), wherein the gearbox actuator unit (14) comprises:
• a housing (22),
• a control device (24), and
• at least one actuator (28, 30),
• wherein the housing (22) is attached on the gearbox housing (12) and sealed with the gearbox housing (12),
• wherein the control device (24) is electrically connected to the at least one actuator (28, 30) and activates the at least one actuator (28, 30),
• wherein the at least one actuator (28, 30) is connected to the at least one shift fork (18, 20) of the gearbox (10) and actuates the at least one shift fork (18, 20) of the gearbox (10),
• wherein the control device (24) and the at least one actuator (28, 30) are arranged within the housing (22);
• wherein the at least one actuator (28, 30) includes at least one pinion, wherein the at least one pinion is intermeshed with at least one rack of the at least one shift fork, wherein the at least one shift fork is slidingly attached on a guide rod within the gearbox.

A gearbox actuator unit (14), configured for installation on a gearbox (10), comprising:

• a housing (22),
• a control device (24), and
• at least one actuator (28, 30),
• wherein the housing (22) is sized and shaped for attachment on a gearbox housing (12) and for sealing with the gearbox housing (12),
• wherein the control device (24) is electrically connected to the at least one actuator (28, 30) and configured to activate the actuator (28, 30),
• wherein the at least one actuator (28, 30) is configured to actuate at least one shift fork (18, 20) of the gearbox (10) and configured for connection to the at least one shift fork (18, 20) of the gearbox (10),
• wherein the control device (24) and the at least one actuator (28, 30) are arranged within the housing (22);
• wherein the housing (22) comprises a plurality of portions including at least a first housing portion (22a) and a second housing portion (22b);
• wherein the second housing portion (22b) has a rim, a wall, and a base;
• wherein the at least one actuator (28, 30) is mounted to the second housing portion (22b), and the control unit (24) is mounted to the first housing portion (22a);
• wherein the base of the second housing portion is axially offset from the rim and the wall extends axially from the base to the rim, wherein the rim is peripherally closed and includes a contact surface configured for sealing attachment with a contact face surrounding an opening of the gearbox housing, wherein the base includes an axial offset defining a plurality of planes including at least a lower plane and an upper plane.