摘要:
A downsized torque vectoring device that is easily to be mounted on an automobile. The torque vectoring device comprises: a differential mechanism that allows a first driveshaft and second driveshaft to rotate at different speeds; an actuator that applies a control torque to the differential mechanism to rotate the first driveshaft and the second driveshaft at different speeds; and a reversing mechanism that allows the first driveshaft and the second driveshaft to rotate in opposite directions. A gear ratio of a first gear train and a gear ratio of the second gear train are different from each other.
摘要:
A brake operating device to improve a brake feeling by a simple structure without a hydraulic source or an electric power source. A first reaction force establishing mechanism as an elastic member establishes the reaction force against the pedal force applied to the brake pedal. A second reaction force establishing mechanism increases the reaction force when depressing the brake pedal. The first reaction force establishing mechanism and the second reaction force establishing mechanism are arranged coaxially in series.
摘要:
A brake unit that allows the vehicle to evacuate safely in the event of brake failure while maintaining a braking performance. The brake unit is mounted on a vehicle together with a motor drive unit 2 to control brake force in accordance with a stroke of a brake pedal and a pedal force. Each brake system comprises: a stroke sensor; a pedal force sensor; a brake mechanism applying brake force to a driveshaft; a controller controlling the brake mechanism based on the stroke and the pedal force; and a powersource supplying electricity to the brake mechanism and the controller. The first controller 13 and the second controller support each other to control brake force.
摘要:
A motor drive unit having an electromagnetic brake serving as an inboard brake that may also be used as a parking brake is provided. In the motor drive unit, output torque of a drive motor is distributed to a first driveshaft and a second driveshaft. The motor drive unit comprises: an electromagnetic brake device that stops rotation of an output shaft by contacting a brake stator to a brake rotor; a brake motor that generates torque when energized; and an engagement force generating device that generates an engagement force to engage the brake member with the rotary member when the output torque of the brake motor is applied thereto, and that maintains the engagement between the brake member and the rotary member when current supply to the electromagnetic brake device and the brake motor is stopped.
摘要:
A power transmission unit that can multiply torque of a prime mover to be delivered to a differential gear unit is provided. Torque of a drive motor is delivered to planetary gear units through a driven gear. A first ring gear of the first planetary gear unit is meshed with a first supplemental gear, and a second ring gear of the second planetary gear unit is meshed with a second supplemental gear. The first supplemental gear and the second supplemental gear are connected to each other through a reaction gear unit to reverse the torque applied to the first ring gear to be transmitted to the second ring gear.
摘要:
A downsized differential assembly having a simple structure, which can be mounted easily on automobiles. The differential assembly comprises a set of first to third gears arranged coaxially while being allowed to rotate relatively to one another. A first eccentric gear meshes with the first gear, a second eccentric gear meshes with the second gear, and a third eccentric gear meshes with the third gear, while being supported by an eccentric member in such a manner as to rotate around an eccentric axis which is offset from a rotational axis. Gear ratios between the first to third gears and the first to third eccentric gears are set to different values so that rotational speeds of the first gear and the second gear are reduced slower than that of the eccentric member.
摘要:
A brake operating device in which an operation of a brake pedal can be detected easily by a simple structure is provided. The brake operating device 1 comprises: a pusher 19, 20 connected to a brake pedal 2; a hydraulic system 5 in which fluid is held between the pusher 19, 20 and a pushing element 27 to transmit a thrust force of the pusher 19, 20 to the pushing element 27; a first elastic mechanism 23a, 23b that establishes an elastic force to isolate the pusher 19, 20 away from the pushing element 27; a cylinder 18 holding the pusher 19, 20 while restricting a withdrawal limit of the pusher 19, 20 in a direction away from the pushing element 27; and a second elastic mechanism 37 that is arranged at a position to push the cylinder 18, and that establishes an elastic force against the elastic force in the direction to isolate the pusher 19, 20 away from the pushing element 27.
摘要:
A motor drive unit having an inboard brake in which a lateral weight distribution is balanced is provided. In the motor drive unit, output torque of a drive motor is distributed to a right driveshaft and a left driveshaft via a drive gear a drive gear fitted onto an output shaft thereof. A brake rotor is also fitted onto the output shaft to be rotated integrally therewith. A brake device stops rotation of the drive gear by engaging the brake rotor with a brake stator that is allowed to rotate relatively to the brake rotor but restricted to rotate in a rotational direction of the brake rotor. The brake device is disposed on an opposite side of the drive motor across the drive gear.
摘要:
A control system for a drive unit configured to control driving force and braking force integrally is provided. The control system comprises: a sensor that detects vehicle conditions and an operation amount of an accelerator pedal etc.; a brake device that is contacted to an input element of a differential unit or a rotary member attached to the drive motor connected to the differential unit; and a controller. The controller is configured to calculate: a target travelling condition based on the vehicle condition and the operation amount detected by the sensor; target drive torques or target braking torques to be applied to the right wheel and left wheel based on the target travelling condition; output torques of a drive motor and a differential motor based on the target driving torques; and a braking force to be established by the brake device and an output torque of the differential motor based on the target braking torques.
摘要:
A pressure regulator configured to regulate a pressure of a working fluid by two pilot pressures, including: a spool valve mechanism having a spool; a first biasing mechanism configured to bias the spool toward the other end of the pressure regulator in its axial direction by a first pilot pressure in a first-pilot-pressure chamber, a second biasing mechanism configured to bias the spool toward the other end of the pressure regulator by a second pilot pressure in a second-pilot-pressure chamber; and a counter biasing mechanism configured to bias the spool toward one end of the pressure regulator by a pressure of the working fluid in a regulated-pressure chamber, wherein the counter biasing mechanism has a counter biasing piston configured to push the spool toward the one end of the pressure regulator by the pressure of the working fluid in the regulated-pressure chamber applied to the counter biasing piston.