A power transmission device is provided with a casing drivingly coupled to the power source to create a rotation about an axis, and a differential gear set supported by the casing to rotate with the casing about the axis. The differential gear set includes a pair of side gears capable of making a differential motion from each other, a friction section interposed between the casing and the differential gear set, or internal to the differential gear set, to frictionally limit the differential motion, a disconnect device coupled to one of output shafts for connectably disconnecting one of the side gears from the one of the output shafts, and a cam structure coupled directly or indirectly to the friction section to convert a torque in a direction for accelerating the rotation into a thrust force in an axial direction to exert the thrust force on the friction section.

A differential gear mechanism includes a differential case, a first side gear, a second side gear, a first pinion and a second pinion. The first side gear is rotatably mounted within the differential case and has a first outer diameter. The second side gear is rotatably mounted within the differential case and has a second diameter. The first pinion gear is meshed for rotation with the first side gear during a first meshing event. The second pinion gear is meshed for rotation with the second side gear during a second meshing event. The first and second pinion gears form a torque transfer arrangement configured for transferring torque between the first and second pinion gears and the first and second side gears to rotate the first and second side gears. The first and second outer diameters are distinct such that the first and second meshing events are offset in time.

Locking differential systems, vehicles and methods are provided. An electric vehicle includes an electric motor including a stator and a rotor, wherein the rotor is configured to rotate about a rotor axis; a rotor shaft connected to the rotor for rotation about the rotor axis; a differential located within the rotor shaft; a first input shaft connected to first side of the differential; a second input shaft connected to second side of the differential; a locking system configured to selectively lock rotation of the first input shaft to rotation of the rotor shaft; a control system configured to determine when to lock rotation of the first input shaft to rotation of the rotor shaft; and an actuation system configured to operate the locking system to lock rotation of the first input shaft to rotation of the rotor shaft.

A coaxial electrified drive axle is provided for a vehicle. The coaxial electrified drive axle has an electric motor connected to a gear box housing containing a stepped planetary gear set operatively coupling a drive shaft of the electric motor to a linkshaft and an output shaft through a differential assembly. The differential assembly is contained within a carrier which also supports the planet gears through planet pins. The carrier is supported by a single carrier support bearing. The drive shaft, the linkshaft, and the output shaft are coaxial and share a common axis of rotation.

A drive axle for a vehicle has a differential gearing system 3 arranged in a transmission housing 1, which differential is connected by plug-in shafts 5 to wheel hubs 7, where the plug-in shafts 5 extend through axle housings 2. The plug-in shafts 5 are arranged with their ends facing toward the differential gearing 3 fixed on the axle bevel gears 4 of the differential gearing 3. A transmitter wheel 9 is arranged on one or both plug-in shafts 5, whose rotary movement can be detected by a rotation speed sensor 8 arranged on the transmission housing 1 or the axle housing 2. The plug-in shafts 5 are guided radially, directly or indirectly, on the transmission housing 1 or in an area of the axle housing 2 adjacent to the transmission housing 1.

A differential drive device for a transmission system for a motor vehicle, having an axis of rotation (X) includes a planet carrier supporting engagement toothing, notably axial engagement toothing. An output ring gear is rotatable about the axis of rotation and supporting engagement toothing, notably radial engagement toothing. An axially movable blocking sliding gear is provided with engagement toothing, notably radial engagement toothing, and an axially movable connection sliding gear is provided with engagement toothing, notably axial engagement toothing. The connection sliding gear and the blocking sliding gear are movable in order to assume three axial positions: a disconnected position, a connected position, and a blocked position.

The present invention provides a differential and a moveable power tool that has this differential. The differential comprises an input mechanism, an output gear, a first transmission component and a second transmission component. The input mechanism comprises a main input end and an auxiliary input end. When meshing of the output gear and a main input mechanism fails, the first transmission component and the second transmission component engage, and the second transmission component in said engaged state drives the first transmission component to rotate in a predetermined direction, so that the auxiliary input end inputs movement to the output gear. The differential provided by the present invention can guarantee the effectiveness and stability of movement transfer, and reduces the occurrence of slippage.

A differential module having a first axis of rotation and including a planet carrier, a planet pinion pivotably mounted on the planet carrier, and a first and a second sun gear pivoting about the first axis of rotation. Also included are a first and a second wheel-driving half-shaft, the first wheel-driving half-shaft being rotationally connected to the first sun gear, and a sliding sleeve able to move between two axial positions. A first connection by means of collaborating shapes is created between the sliding sleeve and the second sun gear. The first connection by means of collaborating shapes is configured so that the sliding sleeve is permanently rotationally connected to the second sun gear and slides axially between the two axial positions.

This differential gear mechanism is provided with a case member having a cylindrical housing portion and held so as to be rotatable about a center axis of the housing portion, a pinion gear provided inside the housing portion so as to be revolvable about a center axis of the housing portion, and a side gear to which a torque is transmitted from the pinion gear and an output shaft is connected, and a side gear is provided with a pinion gear. A meshing gear portion and a boss portion protruding toward the rear side of the gear portion are provided, and the output shaft is connected to the side gears at a boss portion side rather than a border portion between the gear portion and the boss portion in the rotation center axis direction of the side gears.

This differential gear mechanism is provided with a case member having a cylindrical housing portion and held so as to be rotatable about a center axis of the housing portion, a pinion gear provided inside the housing portion so as to be revolvable about a center axis of the housing portion, and a side gear to which a torque is transmitted from the pinion gear and an output shaft is connected, and a side gear is provided with a pinion gear. A meshing gear portion and a boss portion protruding toward the rear side of the gear portion are provided, and the output shaft is connected to the side gears at a boss portion side rather than a border portion between the gear portion and the boss portion in the rotation center axis direction of the side gears.