Aisin Seiki Kabushiki Kaisha

Toyota Jidosha Kabushiki Kaisha

Akiya Taneda

Katsumi Suzuki

Shuuetsu Suzuki

Shimpei Fujii

Teruhide Sato

Masaaki Tabata

Yoshiyuki Yasui

Shuuichi Buma

Akira Kato

Shingo Urababa

Tsukasa Watanabe

Toshiyuki Sakai

Kenji Hayashi

Hideyuki Kobayashi

Kozo Fujita

Toshihiko Yamanaka

Hajime Tanaka

Kenjiro Nagata

Naoki Yamaguchi

Ken Ogue

Hiromitsu Kageyama

Koichi Nishimura

Takamichii Nakaishi

Yoichi Fujinori

Shinji Tanizaki

Takamichi Nakaishi

A rear wheel steering apparatus for a vehicle includes a housing, an electric motor, a planetary gear mechanism, a linear motion mechanism including a nut member and a rod threadedly engaged with the nut member, the housing including a cylindrical body which includes a lock portion provided at an inner surface of the cylindrical body, the housing including a connection cover, a cylindrical holding member holding a ring gear within the cylindrical body in a state where the ring gear is prevented from rotating, and a bearing, wherein the bearing and the cylindrical holding member are disposed and held between the lock portion and the connection cover, and the cylindrical holding member is held to be non-rotatable relative to the cylindrical body.

Rear wheel steering apparatus for vehicle

A rear wheel steering apparatus for a vehicle includes a housing including a cylinder portion and a connection cover, an electric motor housed in the housing, a speed reduction mechanism housed in the housing, a linear motion mechanism including a nut member and a rod for converting a rotation of the nut member to a linear motion of the rod, the cylinder portion including a stopper portion provided at an inner surface of thereof between the electric motor and the speed reduction mechanism, a cylindrical holding member holding the speed reduction mechanism in the cylinder portion, and a bearing supporting the nut member for allowing the nut member to rotate relative to the cylindrical holding member. The bearing and the cylindrical holding member are sandwiched between the stopper portion and the connection cover and the cylindrical holding member is retained so as not to rotate relative to the cylinder portion.

A vehicular rear wheel steering device includes a housing, a rod being non-turnable with respect to the housing and movably supported in an axial direction of the rod, and a conversion mechanism arranged between the rod and the housing to convert a rotation of a rotational drive device to a drive force in the axial direction. The housing includes a tubular first bush disposed at a first end and a tubular second bush at a second end. Each bush is slidably engaged to an outer periphery of the rod and supports the rod to be movable in the axial direction. A rod supporting rigidity of the first bush is lower compared to that of the second bush. The first bush is arranged with an elastic body that deforms in a radial direction of the rod. The second bush is arranged with an inner periphery protrusion at which the rod tilts.

Vehicular rear wheel steering device

A stabilizer control apparatus includes a stabilizer bar including both ends supported by right and left wheels of a vehicle, respectively, and an intermediate portion supported to a vehicle body by first and second supporting members, and a switching device arranged between one of the first and second supporting members and the vehicle body and including a cylinder member, a tubular piston member, a spring member, and an engaging/disengaging mechanism. The switching device switches over the spring member from an extendable/retractable position to a neutral position and vice versa. The engaging/disengaging mechanism allows the piston member to axially move relative to the cylinder member when the spring member is in the extendable/retractable position and prevents the piston member from axially moving relative to the cylinder member when the spring member is retained in the neutral position.

Stabilizer control apparatus

A stabilizer control device for a vehicle includes a first and second stabilizer bars, a housing fixed to an end portion of the second stabilizer bar so as to arrange an end portion of the first stabilizer bar adjacent to the end portion of the second stabilizer bar, a rotational torque reducing mechanism having an input portion fixed to the first stabilizer bar and the housing and reducing a relative rotational torque between the housing and the first stabilizer bar and outputting, a hollow member including the first stabilizer bar so as to rotatably support the first stabilizer bar within the housing and fixed with an output portion of the rotational torque reducing mechanism so as to rotatably support the output portion within the housing, and a clutch mechanism arranged between the hollow member and the housing for engaging and disengaging therebetween.

Stabilizer control device

A stabilizer control apparatus operating to contort stabilizer bars ensures the stability of a vehicle, even in the event that one of the front and rear stabilizer bars of the vehicle is stuck in a contorted state. The stabilizer control apparatus includes frontward and rearward stabilizer barsand, frontward and rearward stabilizer actuatorsthat can be driven to contort the stabilizer barsandbetween their two ends, a lateral G sensoror the like for detecting rolling of the vehicle and furthermore an ECUthat outputs to the stabilizer actuatorsanda driving signal to cause a resisting rolling moment countering rolling of the vehicle and that moreover, in the event that the irregularity is detected that one of the frontward and rearward stabilizer barsandis stuck in a contorted state, outputs to the stabilizer actuatorsanda driving signal to contort the other one of the frontward and rearward stabilizer barsandin the direction compensating that rolling moment.

Stabilizer control unit

A stabilizer control device includes a pair of stabilizer bar positioned between right, left wheels of a vehicle, an electric motor, an actuator positioned between said pair of the stabilizer bar, the actuator comprising the electric motor, and a control means for controlling the electric motor in accordance with a turning state of the vehicle. At least one motor relay positioned in parallel with corresponding number of coil of the electric motor. The motor relay is short circuited when electric power is not supplied to the electric motor.

A stabilizer control device comprises a pair of a first stabilizer bar and a second stabilizer bar, an actuator the actuator including a first member and a second member, the first member including a bearing portion to which the first stabilizer bar is connected, the second member to which the second stabilizer bar is connected so as to generate a rotation relative to the first member, a spline shaft portion having a first external spline formed on the first stabilizer bar, an internal spline formed on an inner peripheral surface of the bearing portion of the first member, a groove portion is formed on a part of the spline shaft portion, and a toothed elastic member provided in the groove portion so as to fit to the internal spline of the bearing portion.

A stabilizer control device for vehicle includes a pair of stabilizer bars () provided between a left wheel and a right wheel of a vehicle, and an actuator including a reduction mechanism (RD) connecting between said pair of stabilizer bars () and a motor (M) connected to the reduction mechanism (RD) for providing torsion force to said pair of stabilizer bars () through the reduction mechanism (RD) wherein the reduction mechanism (RD) comprises a first gear () and a second gear () for generating relative rotational speeds differential therebetween, the first gear () and the second gear () are coaxially placed adjacent to each other, and opposed side faces of stabilizer bars () are adjacently connected with the first gear () and the second gear () respectively and disposed in the reduction mechanism (RD).

Stabilizer control device for vehicle

A rear wheel steering apparatus comprises an electric motor generating rotational torque, an electric control device controlling the rotation of the electric motor, a motion converting device converting the rotational torque of the electric motor into a propulsion force, an output shaft outputting the propulsion force, a rear wheel steering angle detecting device detecting a steering angle of the rear wheels steered by the output shaft, a regulating member for prohibiting the output shaft from rotating while allowing the output shaft to move axially, a neutral return device manually returning the rear wheels to a neutral position upon failure of the motor or the electric control device, a neutral return detecting device for detecting the return of the output shaft to the neutral position and a neutral return notification device for notifying the return of the output shaft to the neutral position.

Rear wheel steering apparatus

A rear-wheel steering system designed to reduce noise to a minimum at a low cost. The rear-wheel steering system includes an electric motor for generating a rotational force, a nut member connected to the electric motor and rotated thereby, and a rod having both ends connected to rear wheels of a vehicle and an external thread portion in mesh with an internal thread portion of the nut member. The rod is axially moved by rotation of the nut member for rear-wheel steering, but is not allowed to rotate. In the system, the internal thread portion is in mesh with the external thread portion such that each axial center is off-center.

Rear-wheel steering system

The invention is directed to an apparatus for steering rear wheels of a vehicle. A vehicle speed sensor detects a speed of the vehicle, and a steering angle sensor detects a steering angle of front wheels of the vehicle and provides a first steering signal. A control device is provided for receiving the first steering signal and providing a second steering signal representing a desired steering angle of rear wheels of the vehicle which is determined in response to the first steering signal. A drive device is arranged to receive the second steering signal and steer the rear wheels to reach the desired steering angle. Then, a limit mechanism is provided for reducing the range of variation of steering angle of the rear wheels steered by the drive device to a predetermined range when the vehicle speed exceeds a predetermined speed, or the steering angle of the front wheels is less than a predetermined angle. Accordingly, when the vehicle is traveling at high speed, or when the vehicle turns with a large turning radius, the steering angle of the rear wheels is prevented from being unnecessarily varied.

Growing community of inventors

Anjo, Japan

Akiya Taneda