A coupling and electromechanical control assembly and an electromechanical system for controlling the operating mode of a selectable clutch assembly are provided. The system includes a control member mounted for controlled rotation about a first axis. An actuator and transmission assembly includes a rotary output shaft and a set of interconnected transmission elements including a cam coupled to the output shaft to rotate therewith and a reciprocating member having a first end which rides in or on the cam to cause the reciprocating member to reciprocate upon rotation of the output shaft. A second end of the reciprocating member is coupled to the control member for selective, small-displacement, control member angular rotation about the first axis between different angular positions which correspond to different operating modes of the clutch assembly.

A wedge clutch includes first and second races supported for rotation about a common axis. The first race defines a cam surface and circumferentially arranged pockets recessed into the cam surface. A wedge element is formed of circumferentially arranged wedges each having an ear disposed in one of the pockets. Resilient members are disposed in the pockets and act between the ears to bias the wedge element to a contracted position in which the wedge elements collectively contract towards the axis and the clutch is engaged. A cage is axial movable towards the wedge element to engage with the ears to compress the resilient members and move the wedge element to an expanded position in which the wedge elements collectively expand away from the axis and the clutch is disengaged.

A wedge clutch includes first and second races supported for rotation about a common axis. The first race defines a cam surface and circumferentially arranged pockets recessed into the cam surface. A wedge element is formed of circumferentially arranged wedges each having an ear disposed in one of the pockets. Resilient members are disposed in the pockets and act between the ears to bias the wedge element to a contracted position in which the wedge elements collectively contract towards the axis and the clutch is engaged. A cage is axial movable towards the wedge element to engage with the ears to compress the resilient members and move the wedge element to an expanded position in which the wedge elements collectively expand away from the axis and the clutch is disengaged.

An actuator assembly having an outer section and an inner section that are moveable relative to each other has a clutch assembly mounted on the outer section. The clutch includes a clutch housing, a clutch motor, and a plurality of pins. The clutch housing is rotatable between an engaged position and a disengaged position. The clutch motor is coupled to the clutch housing and is configured to rotate the clutch housing between the engaged position and the disengaged position. The pins are disposed within, and extend radially inwardly from, the clutch housing, and each pin is movable between an extended position and a retracted position. When the clutch housing is rotated into the engaged position, the pins are moved to, and retained in, the extended position, and when the clutch housing is rotated into the disengaged position, the pins are movable to the retracted position.

An actuator assembly having an outer section and an inner section that are moveable relative to each other has a clutch assembly mounted on the outer section. The clutch includes a clutch housing, a clutch motor, and a plurality of pins. The clutch housing is rotatable between an engaged position and a disengaged position. The clutch motor is coupled to the clutch housing and is configured to rotate the clutch housing between the engaged position and the disengaged position. The pins are disposed within, and extend radially inwardly from, the clutch housing, and each pin is movable between an extended position and a retracted position. When the clutch housing is rotated into the engaged position, the pins are moved to, and retained in, the extended position, and when the clutch housing is rotated into the disengaged position, the pins are movable to the retracted position.

An assembly includes a first structure, a first bearing assembly, and a second structure. The first structure has a first predetermined stiffness, and the first bearing assembly is mounted on the first structure. The second structure, which has a second predetermined stiffness, is mounted on the first bearing assembly, whereby relative motion about a first rotational axis is allowed between the first and second structure. At least one of the first structure and the second structure distort when a force is supplied thereto along the first rotational axis, and the distortion of at least one of the first structure and the second structure imparts a first preload force on the first bearing assembly.

An assembly includes a first structure, a first bearing assembly, and a second structure. The first structure has a first predetermined stiffness, and the first bearing assembly is mounted on the first structure. The second structure, which has a second predetermined stiffness, is mounted on the first bearing assembly, whereby relative motion about a first rotational axis is allowed between the first and second structure. At least one of the first structure and the second structure distort when a force is supplied thereto along the first rotational axis, and the distortion of at least one of the first structure and the second structure imparts a first preload force on the first bearing assembly.

Linear actuator (8) comprising a quick release (27) for disengagement of an adjustment element (23) from an electric motor (19) and the part of a transmission (20) extending from the electric motor (19) to the quick release (27), such that the spindle (21) of the linear actuator is rotated under the load on the adjustment element (23). Further, the linear actuator comprises brake means (28) connected to the spindle (21) for controlling the speed of the adjustment element (23), when the quick release (27) is activated. A coupling (34;52,53,54) connected the brake means (28) is configured to set the brake means (28) in an active state, when the coupling (34; 52,53,54) is engaged, or in an inactive state, when the coupling (34;52,53,54) is slipping or disengaged.

A rotary device includes a rotatable member and a limiting member. The rotatable member includes a positioning mechanism, the positioning mechanism includes a stopping member and a positioning member. When the rotatable member rotates along a first rotation direction to make the limiting member abut against the positioning member, the positioning member is pushed by the limiting member to move away from the stopping portion and rotate relative to the stopping member, so that the positioning member to passes through the limiting member; when the rotatable member rotates along a second rotation direction opposite to the first rotation direction to make the limiting member abut against the positioning member, the positioning member is pushed by the limiting member to move close to the stopping portion, so that the positioning member is stopped between the limiting member and the stopping portion, to position the rotatable member.

A rotary device includes a rotatable member and a limiting member. The rotatable member includes a positioning mechanism, the positioning mechanism includes a stopping member and a positioning member. When the rotatable member rotates along a first rotation direction to make the limiting member abut against the positioning member, the positioning member is pushed by the limiting member to move away from the stopping portion and rotate relative to the stopping member, so that the positioning member to passes through the limiting member; when the rotatable member rotates along a second rotation direction opposite to the first rotation direction to make the limiting member abut against the positioning member, the positioning member is pushed by the limiting member to move close to the stopping portion, so that the positioning member is stopped between the limiting member and the stopping portion, to position the rotatable member.