A torque sensing assembly of a differential of an axle assembly is described in the present disclosure. The differential may include a differential housing portion, a drive pinion positioned within the differential housing portion, a ring gear, a carrier, a differential pinion, a first side gear, a second side gear, a first bearing, a first bearing support, and the torque sensing assembly. The first bearing is coupled to the differential housing portion and rotatable with the carrier. The first bearing support is coupled to the differential housing portion and used to support the first bearing. The torque sensing assembly is coupled to the first bearing support and operable to measure a characteristic resulted from a separation force created between the drive pinion and ring gear.

An axle includes: a driven disc, an inner peripheral surface of the driven disc being a first contact surface; a half shaft connector in transmission with the driven disc, the half shaft connector including a second contact surface on its outer periphery, one of the first contact surface and the second contact surface being a circular ring surface, and the other thereof being a polygonal surface; and a differential lock device including rolling members, a rolling holder, a switching driving member, a switching driven member and a second elastic reset mechanism, a plurality of rolling members being arranged in one-to-one correspondence with a plurality of faces of the polygonal surface, and the switching driving member selectively driving the switching driven member to move, to make the rolling members move to an engaged position.

A drive transmission device according to one embodiment of the disclosure includes a single differential unit to which rotation of a motor is transmitted and two speed reducers each having an operation output shaft that is coupled to the differential unit and a carrier that changes a speed of the rotation of the operation output shaft and outputs the rotation. The two speed reducers are arranged such that they are opposed to each other along a second rotation axis, and the operation output shaft and the carrier in each speed reducer are aligned in the second rotation axis direction.

A drive transmission device in one embodiment of the disclosure includes a pair of output shafts, a differential, a clutch (power transmission unit), and a control unit. The pair of output shafts connected to a pair of speed reducers that are disposed to face each other. The differential receives a driving force from a drive source and outputs the driving force to the pair of output shafts; The clutch acts on the differential and takes a first state in which a load imbalance between the pair of output shafts is adjusted or a second state in which the pair of output shafts are rotated directly by the driving force. The control unit switches the state of the clutch based on difference information regarding a difference in rotation between the pair of speed reducers.

A vehicle drive unit that provides improved power transfer to a differential input member of a differential assembly. The vehicle drive unit is configured with an interlock system that is configured to inhibit the supply of electrical power from a source of electrical power if certain predetermined conditions are not met.

A vehicle drive unit that provides improved power transfer to a differential input member of a differential assembly. The vehicle drive unit is configured with an interlock system that is configured to inhibit the supply of electrical power from a source of electrical power if certain predetermined conditions are not met.

An apparatus case of a driving force transmission apparatus includes a first case member having an accommodating chamber that accommodates a clutch mechanism including a friction clutch, a second case member combined with the first case member to form a storage chamber that stores lubricating oil, and a partition wall member that partitions the accommodating chamber and the storage chamber from each other. The partition wall member is retained by being sandwiched between the first case member and the second case member.

A driving force distributing apparatus is configured to distribute a driving force from an engine to right and left wheels in a manner that the driving force is differentially transmittable to the wheels and the transmission of the driving force is interruptible. The apparatus includes: a differential case; a differential gear mechanism including a pair of side gears and a plurality of pinion gears; an intermediate shaft coupled to one of the side gears such that the intermediate shaft is not rotatable relative to this side gear; and a clutch mechanism to transmit a driving force from the intermediate shaft to one of the wheels in a manner that the transmission of the driving force is interruptible. The clutch mechanism includes: coaxial relatively rotatable first and second rotational members; and a plurality of clutch plates disposed between the rotational members. The first rotational member is spline-fitted to the intermediate shaft.

A driving force distributing apparatus is configured to distribute a driving force from an engine to right and left wheels in a manner that the driving force is differentially transmittable to the wheels and the transmission of the driving force is interruptible. The apparatus includes: a differential case; a differential gear mechanism including a pair of side gears and a plurality of pinion gears; an intermediate shaft coupled to one of the side gears such that the intermediate shaft is not rotatable relative to this side gear; and a clutch mechanism to transmit a driving force from the intermediate shaft to one of the wheels in a manner that the transmission of the driving force is interruptible. The clutch mechanism includes: coaxial relatively rotatable first and second rotational members; and a plurality of clutch plates disposed between the rotational members. The first rotational member is spline-fitted to the intermediate shaft.

A driving force distributing device includes a single pump for supplying control hydraulic pressure to each of first and second hydraulic clutches, an electric motor for driving the pump, a flow rate variable mechanism for changing a ratio of flow rate of hydraulic fluid supplied to each of the first and second hydraulic clutches and a controlling means for controlling the electric motor and the flow rate variable mechanism. The driving force distributing device can variably control a flow rate of hydraulic fluid supplied to first and second hydraulic clutches based on changing a ratio of flow rate of hydraulic fluid supplied to the first and second hydraulic clutches in the flow rate variable mechanism and a control of changing rotational speed of the pump using the motor.