Abstract: A wheel unit includes a motor, a pinion gear fixed to a rotating portion of the motor, a wheel including an annular ground surface and rotating about a final gear support shaft, a final gear fixed to the wheel directly or via another member, a speed reduction mechanism which decelerates rotation of the pinion gear and transmits the rotation to the final gear, and a gear case which accommodates the pinion gear, the speed reduction mechanism, and the final gear. A rotation support portion rotating along with the final gear and the wheel while being supported by the gear case is provided between the final gear and the wheel. An outside diameter of the rotation support portion is greater than an outside diameter of the final gear support shaft.

Abstract: The present invention relates to a mobile robot, in which a wheel is mounted on a robot body in an elevatable structure.

Abstract: The present disclosure provides a final drive assembly for powering a wheel of a machine. The final drive assembly includes a hub adapted to support the wheel, a spindle casting coupled to the hub and a bearing disposed within the hub. The spindle casting at least partially defines a steering axis about which the wheel pivots. The final drive assembly also includes an electric motor disposed within the bearing, the electric motor positioned between the spindle casting and hub.

Abstract: Disclosed is an in-wheel motor system including: an in-wheel motor mounted inside a wheel and generating a driving force; an oil pump provided adjacent to the in-wheel motor and supplying cooling oil into the in-wheel motor; and an oil tank provided under the in-wheel motor and collecting cooling oil discharged from the in-wheel motor, wherein the oil pump and the oil tank are arranged at a lower end of the in-wheel motor and between the in-wheel motor and a steering tie-rod in a longitudinal direction of a vehicle so as to be located at a more inner position than a knuckle in a widthwise direction of the vehicle. In the in-wheel motor system, the oil tank and the oil pump may be efficiently arranged to minimize the size of the oil tank and to improve the cooling performance.

Abstract: A stator holding plate (1) for a wheel hub drive system, in particular for an electric and/or hybrid vehicle, which stator holding plate has a stator fastening portion (S) for the fastening of a stator (103, 105) of an electric motor to the stator holding plate (1) and has an inverter fastening portion (1) for the fastening of an inverter (30) to the stator holding plate (1). A wheel hub drive system equipped with the same.

Abstract: A drive system, in particular a drive system of a wheel hub, for a motor vehicle, in particular an electric and/or hybrid motor vehicle, the drive system including an electric motor. In order to prevent moisture from accumulating in an internal chamber (1) of the drive system, the drive system includes a ventilation device (20) for aerating and de-aerating the interior chamber (1) of the drive system. The ventilation device (20) includes at least one air supply device (21) for supplying air into the internal chamber (1) of the drive system and at least one air removal device (22) for removing air from the internal chamber (1) of the drive system.

Abstract: The invention relates to a wheel provided with electric driving means in the wheel, the electric driving means comprising a rotor and a stator coaxially within the rotor and connectable to a vehicle, with an air gap provided between said rotor and said stator, wherein said wheel is provided with an air gap controlling bearing.

Abstract: Provided is a hydrostatic transmission including a hub having a plurality of radially outwardly protruding teeth circumferentially spaced around the hub and at least one jaw having at least one tooth for engaging teeth on the hub to prevent rotation of the hub, thereby preventing rotation of an output shaft of a motor. When the at least one tooth on the jaw engages teeth on the hub, rotation of the output shaft is prevented by interference rather than friction.

Abstract: A bicycle drive assembly includes a rear hub and a cover. The rear hub includes a rear hub axle, a hub shell, a first rear sprocket and a disc brake rotor. The hub shell is rotatably mounted on the rear hub axle. The first rear sprocket is rotatably mounted on a first side of the rear hub axle. The disc brake rotor is rotatably mounted on the first side of the rear hub axle. The cover is disposed around the rear hub axle and axially between the first rear sprocket and the disc brake rotor.

Abstract: A wearable mobility device comprising a base for the placement of a shoe, the base including a heel-support section, a battery pack, a tail reflector, and a wireless receiver. The device including a first wheel having a wheel hub motor embedded therein, the motor rotatably connected to a first partial axial shaft connected to the base. The device including a second wheel having a wheel hub motor controller embedded therein, the motor controller rotatably connected to a second partial axial shaft connected to the base and operative to control a speed of rotation of the first wheel and the second wheel. The device also including a remote control for controlling the speed of rotation of the first wheel and the second wheel, the remote control operative to transmit one or more control signals to the wireless receiver, the wireless receiver being electrically coupled to the motor controller.

Abstract: A motor wheel assembly for a motor vehicle comprises a radial flux brushless electric motor having a plurality of stator magnets arranged along a circumferential path; a wheel; first connecting means to connect motor to wheel in a torque transfer manner and second connecting means suitable for connecting motor to the motor vehicle. The motor wheel assembly defines a seat interrupting the sequence of stator magnets along the circumferential path and is suitable for housing a caliper of a braking system of the motor vehicle.

Abstract: A wheel includes an axle, a motor, a hub and a rotational displacement detection mechanism. The axle is supported on a body frame of a wheelchair. The motor is mounted on the axle. The hub includes a wheel hub mounted on the axle and handrim base section relatively rotatably supported on the axle and rotatable relative to the wheel hub. The rotational displacement detection mechanism detects rotational displacements of the handrim base section relative to the wheel hub and has a center of rotation coinciding with an axle center of the motor.

Abstract: An in-wheel assembly is provided, and the in-wheel assembly includes an in-wheel actuator and a wheel. The in-wheel actuator includes a driving motor; a decelerator which is disposed inside the driving motor and configured to reduce a rotational speed of the driving motor; and a hollow shaft which is disposed inside the driving motor and configured to transfer a rotational force of the driving motor to the decelerator, which is accommodated in a hollow of the hollow shaft, and circulates fluid inside of the driving motor with respect to a surface of the decelerator when driven to rotate by the driving motor. The wheel accommodates the in-wheel actuator and receives a rotational speed reduced by the decelerator to rotate.

Abstract: Wheel for pedal-assisted bikes includes: a fixed structure associable with the frame of a bike having a driving pedal crank; a circle element mounted on the structure for rotation around a main rotation axis; a propulsion disc rotatably mounted on the structure and connectable to the crank; an electric motor associated with the structure and for cooperating with the propulsion disc to motorize the circle element; and transmission elements for transmitting rotary motion from the disc to the circle element which include a first detection device for detecting the force transmitted to the circle element from the disc, and including: a first plate associated in rotation with one of the disc and the circle element; a second plate associated with the other of the disc and the circle element; at least a motion transmission part between the first plate and second plate.

Abstract: A bicycle hub comprises a hub axle, a motor case and an integrated motor. The hub axle has a pair of frame attachment ends. The motor case is mounted on the hub axle such that the bicycle frame attachment ends protrude out of opposite axial ends of the motor case. The motor case including a recessed portion that is configured to receive a bicycle frame that is mounted to the bicycle frame attachment ends of the hub axle. The integrated motor is operatively mounted between the hub axle and the motor case.

Abstract: An in-wheel assembly includes an in-wheel actuator and a wheel. The in-wheel actuator includes a driving motor; a hollow shaft which is disposed inside of the driving motor and driven by a rotational speed of the driving motor to rotate; a decelerator which is arranged in an inner space of the hollow shaft and configured to reduce a rotational speed of the hollow shaft and output the reduced rotational speed to an output shaft; and a shaft support which is configured to support the hollow shaft to rotate with respect to the driving motor and the decelerator. The wheel accommodates the in-wheel actuator and is driven by a rotational speed decreased by the decelerator to rotate.

Abstract: An in-wheel assembly includes an in-wheel actuator and a wheel. The in-wheel actuator includes a driving motor, a decelerator which is disposed in the driving motor and configured to decrease a rotational speed received from the driving motor, and an output shaft which is configured to receive the rotational speed decreased by the decelerator. The wheel is configured to accommodate the in-wheel actuator in an inner space and is driven by the rotational speed of the output shaft to rotate.

Abstract: A wheel for pedal-assisted bikes includes: a fixed structure associable with the frame of a bike having a driving pedal crank; a circle element mounted on the structure in a rotatable way around a main rotation axis; a propulsion disc rotatably mounted on the structure and connectable to the driving pedal crank; motion transmission elements for transmitting rotary motion from the disc to the circle element, including: a speed gear device for changing the motion transmission ratio from the disc to the circle element; and a first detection device suitable for detecting the force transmitted to the circle element from the disc; an electric motor associated with the structure for cooperating with the disc to motorize the circle element; a power supply for electrically supplying the motor; a processing and control unit for controlling the activation of the motor according to the force detected by the first detection device.

Abstract: An electric machine comprises a rotor, preferably having permanent magnets, although other field generation means are available, and a stator. The stator has coils wound on stator bars for interaction with the magnetic field of the rotor across an air gap defined between them. The rotor comprises a housing of a chamber containing refrigerant. The rotor housing has heat dissipating fins accessible by the open environment whereby air movement relative to the housing caused at least by rotation of the rotor absorbs heat from the fins. The machine may be an axial flux machine, the coils being wound on bars that are disposed circumferentially spaced around a fixed axle of the machine forming a rotational axis of the rotor. The machine may be a wheel motor for a vehicle, wherein the wheel is mounted directly on the rotor housing.

Abstract: An in-wheel driving device disposed in a car wheel includes a motor including a stator and a rotor; a transmission unit disposed adjacent to the motor, having an opening therein, and configured to receive rotation power from the rotor and rotate the car wheel; and a rigid shaft inserted into the opening to fix the motor to a car body.

Abstract: Wheel for pedal-assisted bikes includes: a fixed structure associable with the frame of a bike having a driving pedal crank; a circle element mounted on the structure for rotation around a main rotation axis; a propulsion disc rotatably mounted on the structure and connectable to the crank; an electric motor associated with the structure and for cooperating with the propulsion disc to motorize the circle element; and transmission elements for transmitting rotary motion from the disc to the circle element which include a first detection device for detecting the force transmitted to the circle element from the disc, and including: a first plate associated in rotation with one of the disc and the circle element; a second plate associated with the other of the disc and the circle element; at least a motion transmission part between the first plate and second plate.

Abstract: This invention relates to a wheel driven mechanism for a vehicle such as a wheelchair, an electrical bicycle, or a motorcycle, especially to a vehicle which has a wheel driven by power but without using an independent electric motor. The wheel driven mechanism comprises a rotor, a plurality of permanent magnets, a stator, and a plurality of electromagnets. The rotor is divided into a first block and a second block, and the permanent magnets are disposed within the first block to reduce the weight and the cost of the wheel driven mechanism. Furthermore, the user can easily rotate the handwheel mechanism during power off.

Abstract: A tire/wheel assembly includes a cylindrical annular structure, a rubber material layer provided on a periphery of the annular structure and that faces a circumferential direction of the annular structure, and a plurality of curved metal spring members provided between the annular structure and an electric motor disposed on the inner side of the annular structure that transfers rotation of a rotor of the electric motor to the annular structure.

Abstract: A braking mechanism is provided for a hydraulic motor driven wheel utilizing a two-piece design of a hub that rotates by means of a drive shaft. A hydraulic chamber is created on the hub in which a piston resides. The piston is grounded (i.e., non-rotatable relative to the motor housing) in the sealed chamber. The piston face inside of the chamber has a radial set of face teeth. These face teeth are similar to the face teeth inside of the hydraulic chamber. When the chamber is pressurized, the piston face teeth are pushed away from the hub face teeth allowing the hub to freely rotate. When pressure is released from the chamber, a spring, or a number of springs, push the piston into the hub causing it to stop rotating relative to the piston.

Abstract: An electric vehicle includes a motor unit to drive a wheel. The electric vehicle also includes a control system that controls the motor unit. The control system includes an inverter. The electric vehicle also includes a temperature sensor to sense temperature Tmc of the motor coils of the motor unit or a temperature sensor to sense temperature Tic of the inverter. The electric vehicle also includes a limiter to, if the temperature Tmc sensed by the sensor exceeds a motor coils temperature threshold, reduce a motor current of the unit until a derivative dTmc/dt of the sensed temperature Tmc with time t drops to zero or below, or to, if the temperature Tic sensed by the sensor exceeds an inverter temperature threshold, limit a current command to the inverter until a derivative dTic/dt of the sensed temperature Tic with time t drops to zero or below.

Abstract: An object of the present invention is to remove adverse effects on an in-wheel motor driving apparatus due to the existence of moisture in the apparatus. There is provided an in-wheel motor driving apparatus in which a driving apparatus for generating driving force of a wheel having a wheel hub bearing section is provided in the wheel, the in-wheel motor driving apparatus, wherein a portion of the driving apparatus, except the wheel hub bearing section, is housed in a case having a sealed structure and thereby the inside of the driving apparatus is blocked from outside air, and air in the case is replaced with inert gas as required. As a result, dew condensation is prevented in the case, and adverse effects due to the existence of moisture in the case are removed.

Abstract: A cylindrical roller bearing includes an annular outer race, an annular inner race, a plurality of rollers captured between the inner race and the outer race and a cage operatively connecting together the plurality of rollers for rotating and revolving motion of the rollers between the inner and the outer races. The inner race has an enlarged inner diameter and a reduced thickness relative to the radial loads to be supported.

Abstract: A wheel support bearing assembly with sensor and in-wheel motor integration, that can sense with improved accuracy the forces acting on a contact point between a wheel and a road for precise control of an electric motor unit and/or a vehicle. The bearing assembly includes a bearing unit that rotatably supports a hub of a drive wheel, an electric motor unit, and a reduction gear unit between the electric motor unit and the bearing unit. A sensor unit is associated with an outer ring of the bearing unit. The sensor unit includes a strain generator and at least one measuring sensor attached to the strain generator. The strain generator includes a thin plate including at least two fixation contact segments fixed in contact with an outer diameter surface of the outer ring.

Abstract: An object of the present invention is to provide an in-wheel motor driving device which has a deceased axial dimension and includes aluminum alloy housings having a minimum wall thickness for reduced weight while retaining good assemblability. An in-wheel motor driving device includes a wheel braking device. A back plate of a drum brake or a mounting member for calipers of a disc brake constituting the wheel braking device is formed integrally with an outboard-side end member which is fastened to a outboard-side end surface of a housing of a speed reducer section, for reduced number of parts and minimal axial dimension.

Abstract: An in wheel motor driving device which has a deceased axial dimension and includes aluminum alloy housings having a minimum wall thickness for reduced weight while retaining good assemblability. An in-wheel motor driving device includes: a motor section which has an output shaft; a wheel hub bearing section C; and a speed reducer section which connects the output shaft of the motor section and the wheel hub bearing section coaxially with each other. A housing outer circumferential portion of the motor section and a housing outer circumferential portion of the speed reducer section are integral with each other, being provided by one, outer circumferential member. An outboard-side end member is fixed to an outboard-side end of the outer circumferential member by means of bolts, and the wheel hub bearing section has its fixing ring fixed to the outboard-side end member.

Abstract: A wheel assembly for an in-wheel system is provided. The wheel assembly includes a driving motor configured to generate rotational power; a motor housing configured to accommodate the driving motor and including a plurality of fins on an outer surface thereof; and a wheel configured to accommodate the motor housing inside, to be rotated by the rotational power from the driving motor, and to provide an air flow to cool the motor housing when rotated.

Abstract: A driving system for electric vehicle is disclosed to use a clutch switching unit for controlling a motor rotor-driven bushing to rotate a wheel hub via a direct-drive active clutch or via a set of planet gears and a reducing clutch. At the initial state after startup of the motor, the direct-drive active clutch runs idle, enabling the wheel hub to provide a low-speed high-torque output, saving power consumption. When the vehicle speed reaches a predetermined level, a control circuit drives a clutch motor to move the clutch switching unit in releasing the reducing clutch to idle the planet gears, enabling the direct-drive active clutch to be switched on so that the rotor of the motor can rotate the wheel hub directly to accelerate the vehicle speed.

Abstract: Embodiments of the invention describe vehicles including a wheel (e.g., a front wheel or wheels), a wheel hub, a motor included in the wheel hub to transmit power to the wheel, one or more rolling bearings to support the wheel hub and having one or more rolling elements to enable rolling of the wheel, and a steering axle placed within the wheel hub for steering the wheel. Embodiments also describe a wheel (e.g., a rear wheel or wheels), a wheel hub, a motor included in the wheel hub to transmit power to the wheel, and a swing arm assembly having a first and a second end, the first end rotatably coupled to a steering axle, the second end coupled to the motor. As described below, embodiments of the invention decrease volume necessary for a vehicle's drivetrain, while not adversely affecting the potential for vehicle interior volume and vehicle maneuverability.

Abstract: Motorized hub for an electrically powered motor vehicle comprising a wheel hub mounted to rotate about a hub axis, and an electric traction unit comprising an external stator connected to a hub carrier and an internal rotor (31) whose axis of rotation is distant from the hub axis. The motorized hub comprises reduction means acting between shaft (33) of rotor (31), friction braking means, and a braking rotor secured to the hub. The reduction means comprise a drive pinion connected to the rotor (31) and a ring gear connected to the hub. A brake shaft passes through the hub carrier to connect the braking rotor to the hub. The reduction means comprise two reduction stages and the hub is mounted so that it can rotate via rolling-contact hub bearings positioned around a stub axle of the hub carrier, the brake shaft passing axially through a cavity of the stub axle.

Abstract: A method of actuating a robotic mechanism having a first leg member rotatably coupled to a first side of a chassis and a second leg member rotatably coupled to a second side of the chassis. The method comprises positioning the first leg member and the second leg member generally about 180 degrees with respect to each other and effecting movement of the chassis by rotating both the first leg member and the second leg member with respect to the chassis.

Abstract: One or more embodiments of the present invention concerns a wheel body of a wheel of an electric vehicle including a rim body with a rim portion for receiving a tire and a spoke portion for carrying the rim portion on a bearing for rotatably mounting the rim body on a wheel axle, a motor receiving body for receiving an electric motor for driving the wheel, and the motor receiving body includes an outer, radially surrounding receiving portion for receiving and fixing an outer part of the electric motor, which part is rotatable relative to the wheel axle.

Abstract: A solid wheel comprises a wheel rim and a rubber tire. An internal and an external rings are formed between left and right lateral surfaces of the wheel rim. The internal ring's external periphery is provided circularly with a plurality of axially-extended positioning blocks. Each of plural positioning grooves is formed between any two positioning blocks, the internal ring's external periphery, and the external ring's internal periphery and passes axially through the wheel rim. The external ring's axial width is shorter than the internal ring's. Any of the external ring's left and right lateral sides is provided with a plurality of recesses. The rubber tire's internal periphery is integratedly formed on the internal and external rings of the wheel rim. Thereby, the wheel rim can be firmly fixed with the rubber tire so as to prolong the lifetime of the wheel and ensure the driving safety.

Abstract: An object of the invention is to always maintain an outer pin holder and a housing in a speed reducer section at their predetermined positions, to prevent damage to such components as revolving members, outer circumferential engagers, and motion conversion mechanism upon a large axial load due to turning or sudden acceleration/deceleration, etc., and to eliminate rattling noise caused by the housing and the outer pin holder. A casing immobilizing member which is fixed to an inner surface of a speed reducer section casing and a housing immobilizing member which is fixed to an outer surface of a speed reducer section housing are provided between the speed reducer section casing and the speed reducer section housing. The casing immobilizing member and the housing immobilizing member are bonded with each other via a rubber member.

Abstract: Disclosed herein is an apparatus of driving wheels for an in-wheel system, including: a driving shaft which is the center of rotatable driving; a fixation supporter rotatably supporting the driving shaft and coupled to the driving shaft; an in-wheel motor generating rotational power, which is coupled to the inside of a wheel in which a tire is mounted on one driving shaft in a shaft direction of the fixation supporter; and a balancing member formed on the other driving shaft in the shaft direction of the fixation supporter and formed at a position corresponding to the wheel coupled with the in-wheel motor. According to the present invention, an eccentricity phenomenon which is caused due to inclination of a wheel and a motor in one direction of a fixation supporter can be prevented in an apparatus of driving wheels for an in-wheel system.

Abstract: An in-wheel motor system capable of maximizing the efficiency in using a wheel space by improving a mounting structure thereof, the in-wheel motor system installed at a wheel of a vehicle to transmit a rotational force including an axle installed at the wheel of the wheel and rotating together with the wheel, an in-wheel motor mounted inside the wheel and provided with a rotor and a stator that are used to generate a rotational force to drive the wheel, the rotor, and the stator disposed to face each other while having an accommodation space thereinbetween, a cycloid decelerator installed at a center of the in-wheel motor, and provided with an output shaft to transmit a rotational force at a reduced speed from the in-wheel motor to the axle and an input shaft that passes through the in-wheel motor and rotates together with the rotor, a disc installed at one end portion of the input shaft that protrudes by passing through the in-wheel motor, and a disc brake configured to provide a braking force by pressing th

Abstract: A motor-driven hub (1) for electrically driving an axle of a motor vehicle, said motor-driven hub including a hub (7) configured to receive a wheel (2), the hub (7) being rotatably mounted with respect to a hub carrier (5) about a hub axis (M), the motor-driven hub including an electric traction machine (3), the electric machine including an external stator (32) connected to the hub carrier and an internal rotor, the rotation of the rotor of the electric machine being permanently coupled to the rotation of the hub by means of reduction means (4), the reduction means (4) including a motor pinion gear (42) connected to the rotor of the electric machine and a crown gear (45) connected to the hub (7), the motor-driven hub also comprising mechanical disk braking means (12), wherein the reduction means include two stages of reduction and the brake disk is placed on the outside of the hub carrier with respect to the vehicle.

Abstract: A low-gear drive system functionally coupled to a wheelchair is provided herein.

Abstract: A hydraulic motor and centre wheel group, includes a hydraulic motor positioned in line with a centre wheel and connected to the centre wheel in rotation with the motor, and couplings for a mechanical reaction mechanism rotation connected between the hydraulic motor and a support organ or frame for the group. At least one inner race per corresponding crown of rolling bodies of a rolling friction bearing is formed on an outer diameter of a shell of the hydraulic motor.

Abstract: The invention provides an electrical wheel comprising a hub located along a centre line, a rim being rotatable about the hub such that the centre line forms axis of revolution, and an electrical unit arranged to provide torque between the hub and the rim. The rim forms a compartment with a sidewall extending between a circular bottom and an opening. The hub extends through a suspension located centrally in the circular bottom and terminates in a free end inside the compartment. The electrical unit is located in the compartment in continuation of the hub and fixed to the free end of the hub. The wheel comprises a transmission for transferring the torque from the electrical unit to the rim. The transmission is arranged in the compartment about the hub, and the transmission is located between the bottom and the electrical unit.

Abstract: An in-wheel motor drive unit (21) includes a motor portion A, a speed reduction portion B, and a wheel hub C. The speed reduction portion B includes outer pins (27) engaging with circumferences of curve plates (26a) and (26b) to generate rotation movements of the curved plates, and an outer pin holding portion (45) fixedly fitted in an inner diameter surface of a casing (22) holding the speed reduction portion B, to hold the outer pins (27) parallel to a rotation axis of a motor side rotation member (25). The outer pin holding portion (45) includes a cylindrical portion (46), a pair of ring portions (47) and (48) extending from axial both ends of the cylindrical portion (46) to radially inner side, and a pair of outer pin holding holes (47a) and (48a) provided at opposed positions of the pair of ring portions (47) and (48), and extending parallel to the rotation axis of the motor side rotation member (25) to hold the axial ends of the outer pin (27).

Abstract: A split circumference wheel assembly is provided for an aircraft landing gear wheel configured to maximize the space available within a landing gear wheel well to support a motor driver assembly with drive means that drives the aircraft wheel on the ground. The split circumference wheel assembly includes separable inboard and outboard support walls that are spaced axially apart a maximized distance so that the motor driver assembly is completely contained within the maximized space defined. A preferred wheel assembly employs a demountable flange and a locking ring to integrally and removably support the motor driver assembly within the maximized wheel volume to drive one or more aircraft wheels and move the aircraft independently on the ground. The wheel and motor driver assembly described herein are designed to be retrofitted in an existing aircraft wheel.

Abstract: A hub electric motor unit for a motor-driven or motor-assisted vehicle, the vehicle comprising a frame, a wheel having a hub and a wheel rim connected to the hub by a plurality of spokes; the hub electric motor unit comprising a shaft connectable to the frame of the vehicle, a stator unit mounted on the hub shaft, a rotor disposed around and coaxially with the hub shaft; a hub shell rotatably mounted on the hub shaft, wherein the hub shell comprises two cap members axially disposed on respective sides of the rotor; wherein each cap member comprises a connecting part for connecting a respective subset of the spokes.

Abstract: A wheel and hub assembly for a vehicle includes a clutch dog pivotally attached to a wheel. A toothed ratchet wheel is attached to a pedal crank and positioned adjacent to the clutch dog. A hub cover includes a protrusion. The hub cover is attached to the wheel in a sliding fashion so as to slide between an unlocked position, where the protrusion engages the clutch dog so as to prevent the clutch dog from engaging the toothed ratchet wheel when the pedals are turned in a forward direction; and a locked position, where the protrusion does not engage the clutch dog so that the clutch dog engages the toothed ratchet wheel when the pedals are turned in a forward direction.

Abstract: An object of the present invention is to provide an in-wheel motor driving device which includes a highly adaptable suspension mounting portion, is light weighted, and has reduced drag friction at the time of steering operation. An in-wheel motor driving device comprises: a motor section A which rotates a motor-side rotation member; a speed reducer section B which reduces and transmits rotation of the motor-side rotation member to a wheel-side rotation member; and a wheel hub connected and fixed to the wheel-side rotation member. The above three elements are disposed in series from an inboard side to an outboard side of a vehicle, and suspension mounting brackets are fixed onto an outer surface of the speed reducer section's housing. Arms of a suspension are attached via the suspension mounting brackets.

Abstract: A wheel bearing apparatus incorporating an in-wheel motor has a connecting shaft. The connecting shaft has a disc portion, forming the planetary elements, and a shaft portion, axially extending from the disc portion, via a shoulder portion. The outer circumference of the shaft portion has a serration. The connecting shaft is inserted into the wheel hub until the disc portion abuts the inner member. A seal ring, formed of elastic material, is interposed between the inner member and the connecting shaft to shield the driving portion from the outside in a liquid-tight manner.