A wet friction disc includes a lubrication groove and a plurality of lands defined by the lubrication groove. The lubrication groove has a plurality of circumferential groove portions that extends in a circumferential direction and has a predetermined groove width in a radial direction, and a plurality of intersecting groove portions that extends in directions intersecting the circumferential direction. At least some of the circumferential groove portions have an arc shape such that an end in the circumferential direction is located adjacent to one of the lands in the circumferential direction and that the groove width is entirely contained within a range in the radial direction spanned by that land.

A power transmission path switching device has a friction engaging device; a rotation transmission state switching device comprising a first member and a second member arranged coaxial with each other and having: a free mode and/or a one-way clutch mode allowing rotation of the first member with respect to the second member, and a lock mode preventing rotation of the first member with respect to the second member; and a control device that, when connecting the friction engaging device and setting the rotation transmission state switching device to the lock mode, has a function of connecting the friction engaging device, and then while maintaining the friction engaging device in a connected state, switches the rotation transmission state switching device to the lock mode.

A disconnect mechanism comprises an input shaft defining a drive axis, a disconnect shaft selectively engaged with the input shaft to be driven about the drive axis by the input shaft, and a disconnect ramp operatively connected to the disconnect shaft to axially move the disconnect shaft between at least a first axial position and a second axial position. A disconnect pawl is selectively engaged with the disconnect ramp shaft, and a brake is selectively engaged with the disconnect shaft in the second axial position.

The present invention provides a disconnector apparatus including: a support ring provided in a differential casing and configured to support a pinion gear mounted therein; a clutch ring having one end penetrating the differential casing, provided in the differential casing, and configured to be coupled to or decoupled from the support ring; an actuator configured to press the other end of the clutch ring to couple the support ring and the clutch ring; and an elastic member coupled to an exposed portion of the clutch ring positioned outside the differential casing, the elastic member having one end in contact with the differential casing and the other end in contact with the actuator.

A clutch arrangement for between an engine and a propeller of a drivetrain of a roadable aircraft. The arrangement includes an engine shaft, a propeller shaft, a stationary clutch arrangement housing, and an engagement member which is rotationally locked to and axially slidable relative to propeller shaft. The engagement member includes a first engagement structure for engaging a corresponding engagement structure associated with the engine shaft for setting the clutch arrangement in a propeller propulsion mode, in which rotational propulsion torque is transmitted from the engine shaft to the propeller shaft via the engagement member. The engagement member further includes a second engagement structure for engaging a corresponding engagement structure associated with the clutch arrangement housing for setting the clutch arrangement in a propeller locked mode, in which the propeller shaft is rotationally locked to the clutch arrangement housing by means of the engagement member.

A method for immobilizing a vehicle, in particular an electric bicycle. A drive train of the vehicle includes a clutch that includes a first clutch component and a second clutch component that are situated coaxially with respect to one another and configured to be rotatably fixedly connected to one another by mechanical contact in at least one predefined rotational direction. The method includes: detecting an input of a user for activating an immobilizer, and actuating an actuator as a function of the detected input, as the result of which the first clutch component and/or the second clutch component are/is displaced in the axial direction, as the result of which the mechanical contact between the first clutch component and the second clutch component is separated.

Disclosed are a common control apparatus for parking and a clutch, an operating method thereof, and a vehicle. The common control apparatus for parking and a clutch comprises a parking mechanism, a clutch mechanism, and a motor; the parking mechanism comprises a positioning plate, a rotating drum connected to the positioning plate, a cam groove formed on the rotating drum, an elastic positioner, and positioning grooves; the positioning plate rotates under the driving of the motor; the elastic positioner interacts with the positioning grooves; the rotating drum can rotate to positions corresponding to parking lock, parking disengagement, clutch engagement, and clutch disengagement; the clutch mechanism comprises a clutch shifting fork assembly and a shifting fork driving cam; the cam groove comprises a straight groove and an engagement rotation groove; and when the shifting fork driving cam is located in the engagement rotation groove, the engagement rotation groove is engaged with the shifting fork driving cam to drive the clutch shifting fork assembly to move axially. The present invention simultaneously controls the disengagement and engagement of the parking mechanism and the clutch by means of one motor, and the apparatus has the advantages of simple structure, easy manufacturing, low cost, and high efficiency.

The present invention provides a clutch and a work machine having same. The clutch comprises an input member for receiving a driving force and rotating, an output member for outputting rotational motion, and at least one transmission member. The input member has at least one radially extending protrusion. The output member has at least one transmission engagement part. The transmission member is movable between a first position of engagement with the transmission engagement part and a second position of disengagement, being located in a path of rotation of the protrusion, and able to abut the protrusion and be driven to move to the first position. Displacement of the transmission member between the first position and second position has a radial component. According to the technical solution of the present invention, the function of automatically switching between transmission states according to the operating state of a prime mover can be achieved. The fact that displacement of the transmission member comprises a radial component helps to reduce the axial thickness of the clutch, so that the structure thereof is more compact.

A disconnect mechanism to disconnect an electric machine from an ancillary component includes a ramp shaft connected to a disconnect shaft of the electric machine, and connected to the ancillary component, such that when connected to the ancillary component the disconnect shaft transmits rotational energy between the electric motor and the ancillary component. The ramp shaft includes a disconnect feature. A plunger is selectably engageable with the disconnect feature to disconnect the ramp shaft from the disconnect shaft. The disconnect feature includes a drop-in window for initial engagement with the plunger, and a ramp surface extending in a circumferential direction from the drop in window at an acute angle relative to the drop in window. Engagement of the plunger with the ramp surface urges movement of the ramp shaft in an axial direction away from the disconnect shaft to disconnect the ramp shaft from the disconnect shaft.

A coupling system having an inner tube, a collar, a circular gasket concentrically disposed between the inner tube and the collar; a pair of CAM levers structurally engageable with the collar, and a handle connecting the pair of CAM levers such that a user can single-handedly move the handle between the locked position and the unlocked position.