IP Library Granted Patent US 12709150
Granted Patent B2
US 12709150 · App. 18/690,191 · Granted Aug 18, 2026

Vehicle

Inventor: Mitsuhiro Aso (Fujisawa, JP)
Assignee: ISUZU MOTORS LIMITED
B60K7/0007B60K2007/0092
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Quick Facts
Patent No.
US 12709150
App. No.
18/690,191
Granted
Aug 18, 2026
Kind
B2
Abstract

A vehicle includes a plurality of in-wheel motors respectively accommodated in a plurality of wheels of the vehicle. Each the in-wheel motor of the plurality of in-wheel motors includes a rotor fixed to each wheel of the plurality of wheels that rotates together respectively with the wheel of the plurality of wheels, a stator provided to an inner side of the rotor and rotates the rotor by generating a magnetic force while being fixed to the vehicle, and a shaft fixed to the stator on a rotation axis of the rotor in the stator. The stator includes a coil, and a connector provided on an inner surface of the stator in a vehicle width direction of the vehicle and connected to a cable for supplying electric power to the coil. The plurality of wheels includes a plurality of front wheels for changing a direction of the vehicle.

Claims (44)

1 . A vehicle comprising:

a plurality of in-wheel motors respectively accommodated in a plurality of wheels of the vehicle, wherein

each in-wheel motor of the plurality of in-wheel motors includes: a rotor, of a plurality of rotors, fixed to each wheel of the plurality of wheels that rotates together respectively with the wheel of the plurality of wheels, a stator, of a plurality of stators, provided to an inner side of the rotor and rotates the rotor

by generating a magnetic force while being fixed to the vehicle, and

a shaft fixed to the stator on a rotation axis of the rotor in the stator,

the stator includes:

a coil, of a plurality of coils, and

a connector of a plurality of connectors provided on an inner surface of the stator in a vehicle width direction of the vehicle and connected to a cable of a plurality of cables for supplying electric power to the coil,

the plurality of wheels includes:

a plurality of front wheels for changing a direction of the vehicle in a left-right direction by steering the vehicle, and

a plurality of rear wheels that do not change the direction of the vehicle in the left-right direction by steering the vehicle, wherein

each in-wheel motor of the plurality of in-wheel motors is respectively accommodated in a wheel of the plurality of wheels in a state where a position of a connector, of a plurality of connectors, provided in the stator of each in-wheel motor of the plurality of in-wheel motors respectively accommodated in a front wheel of the plurality of front wheels, in a circumferential direction of the stator is different from a position of the connector, provided in the stator of each in-wheel motor of the plurality of in-wheel motors respectively, accommodated in a rear wheel of the plurality of rear wheels, in the circumferential direction of the stator,

each cable of the plurality of cables is connected respectively to each connector of the plurality of connectors,

the in-wheel motors accommodated in the plurality of front wheels are provided with connectors such that each cable of the plurality of cables supplying electric power to the coil in each front wheel is aligned in a height direction of the vehicle,

the in-wheel motors accommodated in the plurality of rear wheels are provided with connectors such that each cable of the plurality of cables supplying electric power to the coil in each rear wheel is aligned in a front-rear direction of the vehicle,

the vehicle includes a support component that has a hole in which the shaft is inserted and supports the in-wheel motor of the plurality of in-wheel motors,

a plurality of convex portions formed in a circumferential direction of the shaft are provided in at least a partial region of a longitudinal direction of the shaft,

a plurality of concave portions, in which the plurality of convex portions are respectively inserted, are formed in an inner peripheral surface of the hole,

a shape of at least one of the plurality of convex portions is different from a shape of other convex portions, and

a shape of the concave portion of the plurality of concave portions in which the at least one convex portion is inserted is different from a shape of the other concave portions.

2 . The vehicle according to claim 1 , wherein the stator further includes:

an inlet, provided on the inner surface, into which a heat transfer medium that exchanges heat with the coil flows, and

an outlet, provided in a vicinity of the inlet in the circumferential direction on the inner surface, from which the heat transfer medium flowing into the inlet flows out, and

wherein the plurality of in-wheel motors are provided such that the inlet and the outlet are positioned higher than a center of the stator in a height direction of the vehicle.

3 . The vehicle according to claim 2 , wherein

the plurality of in-wheel motors are accommodated in the plurality of wheels such that the outlet is positioned higher than the inlet in the height direction.

4 . The vehicle according to claim 3 , wherein

the plurality of in-wheel motors accommodated in the plurality of front wheels are provided such that positional relationships among the connector, the inlet, and the outlet in the front wheels are the same when the in-wheel motors are viewed from inner sides of the plurality of front wheels.

5 . The vehicle according to claim 3 , wherein

the plurality of in-wheel motors accommodated in the plurality of rear wheels are provided such that positional relationships among the connector, the inlet, and the outlet in the rear wheels are the same when the in-wheel motors are viewed from inner sides of the plurality of rear wheels.

6 . The vehicle according to claim 2 , further comprising:

a first tube that is connected to the inlet; and

a second tube that is connected to the outlet,

wherein the support component includes:

a knuckle extending in a height direction of the vehicle and supporting the front wheel, and

a shock absorber extending in a height direction of the vehicle and absorbing vibration of the vehicle, and

wherein the first tube and the second tube are disposed so as to pass through a space between the knuckle and the shock absorber, and the plurality of the cables extend along a direction parallel to an extending direction of the first tube and the second tube passing through the space.

7 . The vehicle according to claim 2 , further comprising:

a first tube that is connected to the inlet; and

a second tube that is connected to the outlet,

wherein the support component includes:

a knuckle extending in a height direction of the vehicle and supporting the front wheel, and

a shock absorber extending in a height direction of the vehicle and absorbing vibration of the vehicle, and

wherein the plurality of the cables are arranged to pass through a space between the knuckle and the shock absorber, and the first tube and the second tube extend along a direction parallel to an extending direction of the plurality of the cables passing through the space.