A shift range control device switches a shift range by controlling driving of a motor. A learning unit learns, as a position correction value, a normal state time correction value calculated based on at least one of a first reference angle and a second reference angle when at least one output shaft signal is available at a time of turning on of a start switch. The first reference angle is a motor angle at timing when the output shaft signal changes in response to the rotation of the motor in a first direction. The second reference angle is the motor angle at timing when the output shaft signal changes in response to the rotation of the motor in a second direction opposite to the first direction. A target setting unit sets a motor angle target value by using the normal state time correction value stored in a storage unit during a period from when all the output shaft signals are determined to be unavailable to when the start switch is turned off.

A shift range control device switches a shift range by controlling driving of a motor. A learning unit learns, as a position correction value, a normal state time correction value calculated based on at least one of a first reference angle and a second reference angle when at least one output shaft signal is available at a time of turning on of a start switch. The first reference angle is a motor angle at timing when the output shaft signal changes in response to the rotation of the motor in a first direction. The second reference angle is the motor angle at timing when the output shaft signal changes in response to the rotation of the motor in a second direction opposite to the first direction. A target setting unit sets a motor angle target value by using the normal state time correction value stored in a storage unit during a period from when all the output shaft signals are determined to be unavailable to when the start switch is turned off.

An exemplary shift lever includes a mounting assembly, a flexible member coupled to the mounting assembly, and an interface coupled to the flexible member. The flexible member is resilient so as to provide a selected biasing force at a predetermined deformation angle, and flexible enough to elastically deform across a selected angular range. The mounting assembly is configured for connection with the input shaft of a transmission, and the interface is configured for connection with an output of a drive selector.

An exemplary shift lever includes a mounting assembly, a flexible member coupled to the mounting assembly, and an interface coupled to the flexible member. The flexible member is resilient so as to provide a selected biasing force at a predetermined deformation angle, and flexible enough to elastically deform across a selected angular range. The mounting assembly is configured for connection with the input shaft of a transmission, and the interface is configured for connection with an output of a drive selector.

A high performance synchronous transmission to be used aboard a motorcycle for transmitting the motion generated by an engine to a driving wheel, between a crankshaft and a hub shaft parallel therebetween and perpendicular to the median plane of the motorcycle, comprising on the crankshaft a centrifugal clutch, for the automatic engagement of the first speed above a predetermined rotation regime, and a driving pulley apt to transmit the motion through a subsequent kinematic chain, is provided with a coupling between crankshaft and driving pulley which connects them directly, by determining with its own engagement the exclusion of said centrifugal clutch, said coupling being controlled in disengagement when a control lever is in active position.

Methods and systems are provided for an actuation system for a driveline shifting member in a transmission system of a vehicle. In one example, a system may include an actuator coupled to a lever arm via one or more parallel axis gears, and a shaft connecting the lever arm to a driveline shifting member, the lever arm driven via a rolling element housed within a slot in the lever arm aligned with a center of a parallel axis gear of the one or more parallel axis gears.

A compliant shifting mechanism for a power tool includes a selector, a first shift plate rotatable in response to rotation of the selector, a second shift plate rotatable in response to rotation of the first shift plate, a shift member moveable in response to rotation of the second shift plate to shift between a first mode of operation and a second mode of operation, a first torsion spring coupled to the first shift plate, and a second torsion spring coupled to the second shift plate. In response to rotation of the selector in a first direction, the first torsion spring may bias the first shift plate in the first direction for shifting compliance in the first direction. In response to rotation of the selector in an opposite second direction, the second torsion spring may bias the second shift plate in the second direction for shifting compliance in the second direction.

A compliant shifting mechanism for a power tool includes a selector, a first shift plate rotatable in response to rotation of the selector, a second shift plate rotatable in response to rotation of the first shift plate, a shift member moveable in response to rotation of the second shift plate to shift between a first mode of operation and a second mode of operation, a first torsion spring coupled to the first shift plate, and a second torsion spring coupled to the second shift plate. In response to rotation of the selector in a first direction, the first torsion spring may bias the first shift plate in the first direction for shifting compliance in the first direction. In response to rotation of the selector in an opposite second direction, the second torsion spring may bias the second shift plate in the second direction for shifting compliance in the second direction.

A gearbox actuator unit (12) is formed so as to be to be arranged on a gearbox (10). The unit (12) has a flange (14), an actuator (16, 18), a rack (20, 22) and a guide (24, 26). The flange (14) is formed to be connectable to a housing of the gearbox. The rack (20, 22) is received in an axially moveable manner within the guide (24, 26). The actuator (16, 18) meshes with the rack (20, 22) via a pinion (44, 46) and is formed so as to move the rack (20, 22) axially.

A gearbox actuator unit (12) is formed so as to be to be arranged on a gearbox (10). The unit (12) has a flange (14), an actuator (16, 18), a rack (20, 22) and a guide (24, 26). The flange (14) is formed to be connectable to a housing of the gearbox. The rack (20, 22) is received in an axially moveable manner within the guide (24, 26). The actuator (16, 18) meshes with the rack (20, 22) via a pinion (44, 46) and is formed so as to move the rack (20, 22) axially.