An in-wheel motor drive device (1) is arranged inside a wheel (W) of a wheel (92). The in-wheel motor drive device (1) includes a motor rotating shaft that rotates the wheel, as well as a motor unit (21) including a motor casing (29) that houses the motor rotating shaft, and a plurality of cooling fins (41) provided protruding from an inner end surface (29e) in a vehicle width direction of the motor casing and extending along a vehicle front-rear direction. In a state in which an orientation in a front-rear direction of the wheel (92) is aligned with an orientation in the vehicle front-rear direction, a protruding tip position at a vehicle rear side (41b) of the cooling fin (41) is positioned more inwards in the vehicle width direction than a protruding tip position at a vehicle front side (41a) of the cooling fin (41).

A rolling device having a bearing housing accommodating a wheel axle carrying a wheel element, axle support members rotatably accommodated in the bearing housing and supporting the wheel axle, end portions of the wheel axle being connected to the axle support members in an eccentric position displaced from the rotational axis/4 line of the axle support members, a drive wheel connected to one of the axle support members for the axle support member to rotate following the rotation of the drive wheel, a first drive motor having a spindle engaged with the drive wheel to rotate the drive wheel and thereby the axle support member relative to the bearing housing, to displace the wheel element by eccentric movement between an extended position where at least a portion of the wheel element projects outside the bearing housing and a retracted position where the wheel element is located inside the bearing housing.

A rolling device having a bearing housing accommodating a wheel axle carrying a wheel element, axle support members rotatably accommodated in the bearing housing and supporting the wheel axle, end portions of the wheel axle being connected to the axle support members in an eccentric position displaced from the rotational axis/4 line of the axle support members, a drive wheel connected to one of the axle support members for the axle support member to rotate following the rotation of the drive wheel, a first drive motor having a spindle engaged with the drive wheel to rotate the drive wheel and thereby the axle support member relative to the bearing housing, to displace the wheel element by eccentric movement between an extended position where at least a portion of the wheel element projects outside the bearing housing and a retracted position where the wheel element is located inside the bearing housing.

An in-wheel electric motor includes at a vehicle side a connector stub, a stator body connected to the connector stub and on an outer surface equipped with stator windings, and further includes a rotor body coaxially enclosing the stator and rotatable around a rotation axis. The electric motor further includes a power electronics device for powering the stator and a detector for an angular position of the rotor body relative to the stator. The connector stub is provided with a support for coupling to the power electronics device which is mounted on the support inside the hollow stator body. The detector includes an angular position sensor mounted inside the hollow stator body and coupled to the rotor body wherein the detector is mounted on the power electronics device coaxially with the rotation axis.

Inspection robots with swappable drive modules are described. An example inspect robot may include a first removeable interface plate on the side of a robot chassis. The first removable interface plate may couple a first drive module to an electronic board, within the chassis, where the electronic board includes a drive module interface circuit communicatively coupled to the first drive module. The example inspect robot may also include a second removeable interface plate on a side of a robot chassis. The second removable interface plate may couple a second drive module to an electronic board, within the chassis, where the electronic board includes a drive module interface circuit communicatively coupled to the second drive module.

A dual-rotor machine comprising a dual rotor support structure rotatably connected to a frame. A stationary stator is disposed between the rotors and is fixed to the frame. An inner rotor and outer rotor, each comprising a permanent magnet Halbach array, are coaxially disposed with the stator and are rotable about the stator. In this configuration, the inner rotor channels its magnetic flux to its outside, while the outer rotor channels its magnetic flux to its inside. The magnetic flux density at the stator for the dual-rotor machine can be as high as 2 Tesla or higher for high-grade neodymium-iron-boron permanent magnet material, and the stored magnetic energy for conversion to mechanical or electrical energy available to the stator may be at least 0.5 kJ/m. The rotor Halbach arrays may comprise monolithic permanent magnets with continuously variable magnetic field direction.

A dual-rotor machine comprising a dual rotor support structure rotatably connected to a frame. A stationary stator is disposed between the rotors and is fixed to the frame. An inner rotor and outer rotor, each comprising a permanent magnet Halbach array, are coaxially disposed with the stator and are rotable about the stator. In this configuration, the inner rotor channels its magnetic flux to its outside, while the outer rotor channels its magnetic flux to its inside. The magnetic flux density at the stator for the dual-rotor machine can be as high as 2 Tesla or higher for high-grade neodymium-iron-boron permanent magnet material, and the stored magnetic energy for conversion to mechanical or electrical energy available to the stator may be at least 0.5 kJ/m. The rotor Halbach arrays may comprise monolithic permanent magnets with continuously variable magnetic field direction.

Provided is a vehicle power device including: an inner ring as a fixed ring, an outer ring as a rotary ring which is an outer ring rotation, and a bracket a knuckle for fixing an inboard side end portion of the inner ring removably with the electric motor disposed. The electric motor is of an outer rotor motor type, and the bracket includes a bracket base portion and a bracket cylindrical portion, the bracket base portion for being attached to the knuckle and fixed to the inner ring, the bracket cylindrical portion which extends from the bracket base portion toward an outboard side is located on an outer periphery of the outer ring via a radial gap and is provided with a stator disposed on an outer peripheral surface. The rotor of the electric motor is removably attached to the wheel mounting flange via a rotor casing.

Provided is a vehicle power device (1) including: a wheel bearing (2); and a driving motor (3) that can rotationally drive an outer ring (4) as a rotary ring. The vehicle power device further includes a bracket (24) attached to a knuckle (8) of a vehicle. The bracket (24) includes a bracket base portion (24a) and a bracket cylindrical portion (24b), the bracket base portion interposed between the knuckle (8) and an inner ring (5) wherein the inner ring (5) is removably fixed, the bracket cylindrical portion (24b) extending from the bracket base portion (24a) toward an outboard side. The driving motor (3) includes a stator (18) removably attached to an inner periphery of the bracket cylindrical portion (24b) and a rotor (19) attached to the outer ring (4) on an inner periphery of the stator (18).

A land vehicle includes a frame structure, a plurality of wheels supported by the frame structure, and a body supported by the frame structure. The frame structure includes an operator cage that at least partially defines an operator cabin and a rear compartment positioned rearward of the operator cage in a longitudinal direction. The body includes a first sidewall arranged on one side of the vehicle and a second sidewall arranged on another side of the vehicle opposite the first sidewall.