Toyota Jidosha Kabushiki Kaisha

Kayaba Industry Company, Ltd.

Aisin Seiki Kabushiki Kaisha

Kyb Corporation

Takayuki Tachi

Takuhiro Kondo

Motohiko Honma

Hideki Ohashi

Shogo Tanaka

Yoshifumi Kobayashi

Ryo Kanda

Jun Tokumitsu

Katsuyuki Sano

Masaaki Oishi

Yasutaka Fukumoto

Mitsuhiko Hirose

Ikuhide Iyoda

Masao Ikeya

Atsushi Sakuta

Mikihiko Honma

A vehicle-height control system includes: a fluid supply and discharge device including a compressor device and a tank storing fluid pressurized by the compressor device; a vehicle-height control actuator corresponding to a wheel and connected to the fluid supply and discharge device; a vehicle height controller that controls a vehicle height for the wheel by controlling the fluid supply and discharge device to control supply and discharge of fluid to and from the vehicle-height control actuator; a tank pressure controller that controls a tank pressure; and a fluid supply controller that supplies the fluid to a low pressure portion by controlling the fluid supply and discharge device at start and/or termination of at least one of control executed by the vehicle height controller and control executed by the tank pressure controller. The low pressure portion is at least a portion of the fluid supply and discharge device.

Vehicle-height control system and pressure source device

A suspension device (S) as a solution for the problem of the present invention includes: an active suspension unit (U) equipped with a linear actuator (A) and a first fluid pressure damper (D) connected to the actuator (A) to extend and retract in the same direction; and a second fluid pressure damper (D) arranged in parallel with the active suspension unit (U).

Suspension device

In a suspension device (S) comprising a motion transforming mechanism (T) for transforming a linear motion of a linear motion member () into a rotational motion of a rotating member () and a motor (M) connected to the rotating member () in the motion transforming mechanism (T), an air spring (AS) is provided, the air spring (AS) including a tubular air chamber () connected to the motor (M), an air piston () connected to the linear motion member () and being tubular and smaller in diameter than the air chamber (), and a diaphragm () interposed between the air chamber () and the air piston (), a stopper () is provided on an outer periphery of the air piston (), and a stopper seat () is provided on an inner periphery of the air chamber () so as to be put in abutment against the stopper () upon maximum extension of the suspension device involving relative separation of the air chamber () and the air piston () with respect to each other.

A suspension device (S) of the present invention includes: a member () coupled to one of a vehicle body and a vehicle axle; an outer cylinder () coupled to the other one of the vehicle body and the vehicle axle and disposed at the outer circumference of the member (); and a bearing () that is interposed between the member () and the outer cylinder (), the bearing () having balls () that rollably contact at least one of the member () and the outer cylinder (), and a ball case () that retains the balls () rollably.

A suspension device (S) of the present invention comprises: an actuator (A) including a motion conversion mechanism (T) for converting a linear motion to a rotational motion, and a motor (M) connected to a rotational member () which performs the rotational motion in the motion conversion mechanism (T); a fluid pressure damper (D) connected to a linear motion member () which performs the linear motion in the motion conversion mechanism (T); a mount () connected to a sprung member of a vehicle; and suspension springs () and () interposed between the mount () and an unsprung member, the actuator (A) being elastically supported by the mount () through a rubber vibration isolator ().

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Toyota, Japan

Takayuki Tachi