A front wheel is rotatably fitted to a knuckle of a suspension by means of a hub unit. While a stator bracket, which is fitted to an outer hub of the hub unit fixed to the knuckle, supports an annular stator, a rotor bracket, which is fitted to an inner hub of the hub unit to which the front wheel is fixed, supports an annular rotor, outside the stator. Rotation of the rotor is guided by a bearing of the hub unit.

In-wheel motor

PROBLEM TO BE SOLVED: To set a connection part of a lower arm and a wheel support member to the optimum position and to prevent interference of the connection part with a speed reducer in a wheel drive device. SOLUTION: The wheel 11 is drivably constituted by decelerating rotation force of a motor 31 arranged in the wheel 12 by a plurality of speed reducers 32, 33 and transmitting it to the wheel 12. The motor 31 and the respective speed reducers 32, 33 are stored in a housing 26, and a lower ball joint 62 for connecting the lower arm 61 and the knuckle arm 29 is arranged so as to be opposed to a radial direction of the first speed reducer 32 and the wheel 12. A housing body 27 and an outer peripheral part of a ring gear 41 of the first speed reducer 32 are connected by a spline 45, and tooth lack parts 27c, 41b are formed at positions opposed to the lower ball joint 62 in the circumferential direction of the spline 45. COPYRIGHT: (C)2009,JPO&INPIT

Wheel drive device

When a brake ECU is started up rapidly by a brake pedal operation, the brake ECU executes a depression force fluid pressure mode. When the control pressure detected by a control pressure sensor becomes smaller than a switching determination threshold value, the brake ECU determines that an operation of returning a brake pedal is being performed, and switches the braking mode from the depression force fluid pressure mode to a normal control mode. Accordingly, even when the operation of a stroke simulator has been started, no uncomfortable feeling is given to a driver. Further, even when the operation of returning the brake pedal is not being performed, the braking mode is switched from the depression force fluid pressure mode to a simulator non-operation control fluid pressure mode when a vehicle starts to travel. Consequently, desired braking force can be rapidly generated.

Brake control device

In a case where existence of a branch point in front of a vehicle is not recognized based on position information of the vehicle and map information, when a lane width variation is greater than or equal to a first threshold value larger than a second threshold value, a determination that the branch point exists is made by a determination unit of a vehicle control device. On the other hand, in a case where existence of the branch point is recognized based on the position information of the vehicle and the map information, when the lane width variation is greater than or equal to the second threshold value smaller than the first threshold value, a determination that the branch point exists is made by the determination unit.

Vehicle control device

An EPB control device controlling an electric actuator driving an EPB, wherein the device performs control to reach a lock position, a release position and a standby position between the lock position and the release position. In the lock position, a friction-applying member is thereby pressed against a friction-applied member by the EPB by actuating the electric actuator and a predetermined braking force is generated. In the release position, the friction-applying member is separated from the friction-applied member when the EPB is not actuated. In the standby position, a transition to the lock position is performed in a shorter time than when the EPB is actuated from the release position by the actuation of the electric actuator. The device controls, when a starting operation to start moving a vehicle is performed, the electric actuator such that the standby position is reached.

Electric parking brake control device

PROBLEM TO BE SOLVED: To suppress drag in a built-in type electric brake device. SOLUTION: While a parking brake is operated by an electric actuator 90, and a pressing force is kept by a lock mechanism 74, if it is estimated that there is an intention of releasing the parking brake before the relatively short time is elapsed, a hydraulic actuator 92 is operated, a piston 30 is advanced, and the hydraulic pressure in a hydraulic chamber 36 is kept in this state. As the piston 30 is advanced with hydraulic pressure generated in the hydraulic chamber 36, a piston seal 32 can be elastically deformed. Thereafter, when the parking brake is released, the piston 30 is subjected to the elastic deformation of pads 16, 18, the restoring force of the elastic deformation of a caliper 14, and the restoring force of the elastic deformation of the piston seal 32, and thus the piston 30 can be returned to the desired position to suppress the drag. COPYRIGHT: (C)2011,JPO&INPIT

Electric brake device

PROBLEM TO BE SOLVED: To provide a vehicular braking control device capable of jointly using a regenerative brake and a friction brake for braking each wheel, and preventing degradation of the braking force and generation of the vibration and squeaking attributable to the rust by removing the rust generated on a disk rotor in an early stage. SOLUTION: The vehicular braking control device has an in-wheel motor and a friction brake on each wheel, and jointly uses the regenerative braking force by the in-wheel motor and the friction braking force by the friction brake in the braking mode. The pressing force of the friction brake against a disk rotor is detected, the torque to the wheels is obtained from the current of the in-wheel motor (Step 12), generation of the rust on the disk rotor is determined (Step 13) based on the pressing force and the torque detected in Step 12, provision of the braking force by the regenerative brake is stopped when it is determined in Step 13 that the rust is generated on the disk rotor, and the braking is preferentially performed by the friction brake (Step 14). COPYRIGHT: (C)2006,JPO&NCIPI

Vehicular braking control device

PROBLEM TO BE SOLVED: To provide a wheel structure for an electric vehicle of in-wheel motor type allowing miniaturizing of the whole constitution. SOLUTION: The wheel structure 10 for the electric vehicle including a motor 20 in a wheel 1 comprises a speed reduction mechanism 70 for reducing rotation speed of the motor 20 and transmitting it to the wheel and a brake mechanism. A brake pad 84a of the brake mechanism is arranged so as to act on both surfaces 76a of a ring gear 76 of the speed reduction mechanism 70. Thus, the ring gear 76 of the speed reduction mechanism 70 is made to function as a brake disk, thereby miniaturizing the whole constitution of the wheel structure for the electric vehicle having the speed reduction mechanism and the brake mechanism. COPYRIGHT: (C)2005,JPO&NCIPI

Wheel structure for electric vehicle

PROBLEM TO BE SOLVED: To prevent dust from wear produced while braking a vehicle from depositing on the outer face of a wheel disc. SOLUTION: This vehicle braking device comprises a braking means for putting a brake pad 18 in slide contact with the surface of a disc rotor 14 being rotated with a wheel to generate braking force, and a neutralizer 22 arranged near the braking means for spraying misty water or ions having reverse polarity to the wear debris toward the charged wear debris which is produced by the slide contact of the brake pad 18 with the surface of the disc rotor 14 and flies to the rotating direction of the disc rotor 14, to neutralize the wear debris. COPYRIGHT: (C)2007,JPO&INPIT

Vehicular braking device

PROBLEM TO BE SOLVED: To reduce adherence of brake abrasion powder to a wheel for a vehicle SOLUTION: The wheel 10 has a cylindrical rim 12, and a spokes 16 extended from an inner circumferential surface 13 of the rim 12 to a center disc 14 Small turbulent flow generating means such as dimples are formed in at least one of the inner circumferential surface 13 of the ring 12 and side wall parts 24 of the spoke 16 A boundary layer of an air flow flowing from the inside of the wheel 10 to the outside during traveling is transited from a laminar boundary layer to a turbulent boundary layer by the small turbulent flow generating means Since the turbulent boundary layer is not susceptible to separation, the air flow can be merged into a travel wind outside a vehicle body, without significant turbulent air flow Therefore, it is easy to discharge the brake abrasion powder to the outside on the air flow, so as to reduce the adherence of the brake abrasion powder to the wheel 10 COPYRIGHT: (C)2007,JPO&INPIT

泰昭鶴見

Papers

Electric brake device

Vehicular braking control device

Wheel structure for electric vehicle

Vehicular braking device

Wheel for vehicle

泰昭 鶴見

Papers

Electric brake device

Vehicular braking control device

Wheel structure for electric vehicle

Vehicular braking device

Wheel for vehicle

泰昭鶴見