公开(公告)号：US20190145540A1

公开(公告)日：2019-05-16

申请号：US15759518

申请日：2016-08-26

Applicant: KYB Corporation

Inventor： Toru TAKEUCHI

IPC: F16K31/06

Abstract: A solenoid valve includes a main valve configured to change a communication opening degree between a first port and a second port, a control pressure chamber configured to bias the main valve in a valve closing direction, an auxiliary valve configured to open and close a first communication passage and a second communication passage formed in the main valve, a solenoid portion configured to displace the auxiliary valve, a back pressure chamber and a sub-return spring configured to bias the auxiliary valve in a valve closing direction, and a pressure compensation unit configured to change a biasing force of the sub-return spring acting on the auxiliary valve according to a pressure in the back pressure chamber.

公开(公告)号：US20190111950A1

公开(公告)日：2019-04-18

申请号：US16094005

申请日：2017-04-19

Applicant: KYB CORPORATION

Inventor： Takayuki OGAWA ,  Jun AOKI

IPC: B61F5/24

Abstract: A railway vehicle vibration damping device includes: an actuator including a cylinder body configured to expand and contract when supplied with hydraulic fluid, a pump configured to supply the hydraulic fluid to the cylinder body, and a motor configured to drive the pump, and installed on a railway vehicle; and a control unit configured to control the motor. The control unit stops the motor when a current value to be provided to the motor becomes equal to or larger than a current threshold for outputting a restriction torque set to a value exceeding a rated torque of the motor.

公开(公告)号：US20190085872A1

公开(公告)日：2019-03-21

申请号：US15742984

申请日：2016-10-25

Applicant: KYB CORPORATION

Inventor： Takayuki OGAWA ,  Takuya KOUGE

IPC: F15B15/14 ,  F15B15/18

Abstract: A hydraulic device of the present invention includes: a cylinder body (S) including a cylinder (1) and a rod (2) that moves retractably inside the cylinder (1); and a pump unit (30) that is formed with an oil passage (31) and discharges, at an intermediate position in the oil passage (31), liquid into the cylinder (1) through driving of a motor (M). The cylinder body (S) is connected to the pump unit (30) via an extension (40) having an oil passage (41) that provides communication between the oil passage (31) of the pump unit (30) and an interior of the cylinder (1).

公开(公告)号：US20190055931A1

公开(公告)日：2019-02-21

申请号：US15760388

申请日：2016-09-14

Applicant: KYB Corporation

Inventor： Ryunosuke ISHIKAWA

IPC: F04B1/20 ,  F01B3/00

Abstract: A piston pump/motor includes a cylinder block rotated with a shaft; a piston slidably inserted into a cylinder that is formed on the cylinder block; a shoe rotatably connected to a tip end portion of the piston, the shoe being in sliding contact with the tip end portion; and a swash plate with which the shoe is in sliding contact. The shoe has a piston slide portion in sliding contact with the piston and a swash-plate slide portion in sliding contact with the swash plate; a shoe body portion on which the piston slide portion and the swash-plate slide portion are mounted; and a first lock portion and a second lock portion provided across the shoe body portion, and the piston slide portion and the swash-plate slide portion, respectively, the first lock portion and the second lock portion regulating relative rotation between the shoe body portion, and the piston slide portion and the swash-plate slide portion.

公开(公告)号：US20190047349A1

公开(公告)日：2019-02-14

申请号：US16076425

申请日：2017-01-30

Applicant: KYB Corporation

Inventor： Takumi HAYASHIGUCHI ,  Takahisa MOCHIZUKI

IPC: B60G17/027 ,  B62K25/10 ,  F16F9/32 ,  F16F9/46 ,  F16F9/56

Abstract: A shock absorber includes a suspension spring configured to bias a shock absorber main body in an extension direction, a spring receiver configured to support one end of the suspension spring, a jack configured to drive the spring receiver, and a stroke sensor, wherein the jack includes a housing having a cylinder part provided to the outer periphery of an outer shell of the shock absorber main body, and a piston inserted between the outer shell and the cylinder part, and the stroke sensor includes an annular permanent magnet provided to the piston, and a sensor part provided to the outer periphery of the housing or between the housing and the outer shell, the sensor part being configured to detect an axial direction position of the permanent magnet.

公开(公告)号：US20190040923A1

公开(公告)日：2019-02-07

申请号：US16074898

申请日：2017-01-06

Applicant: KYB CORPORATION

Inventor： Shinichi SEKINE ,  Akihisa OTA ,  Masaya UNE ,  Atsushi TOYOUCHI ,  Yukiko ISHIHARA ,  Chika IIDA

IPC: F16F9/088 ,  A47B97/00 ,  A47B96/14 ,  F16F15/023

Abstract: Providing a damper which exerts a damping force in an entire stroke range and an overturn preventing device which can successfully prevent an article from overturn by equipment of the damper. The damper includes a cylinder, a rod guide, a piston, a rod, and a cylindrical member. In the damper, a hydraulic fluid and a compressed gas are enclosed in the cylinder. The cylindrical member regulates a position of the piston so that the piston is immersed in the hydraulic fluid enclosed below the gas in a state where a bottom of the cylinder is located lower than an opening and the rod protrudes upward from the cylinder and where central axes of the cylinder and the rod are inclined at a predetermined angle with respect to a horizontal plane.

公开(公告)号：US10183540B2

公开(公告)日：2019-01-22

申请号：US15524903

申请日：2015-11-06

Applicant: KYB Corporation

Inventor： Tatsuya Masamura

IPC: B60G21/06 ,  B60G17/015 ,  B60G17/056 ,  B60G17/0165 ,  B60G17/017 ,  B60G17/018 ,  B60G17/08

Abstract: A suspension device includes an actuator device provided with an extensible/contractible actuator body interposed between a sprung member and an unsprung member of a vehicle, a pump that supplies fluid to the actuator body to extend or contract the actuator body, and a controller that controls a rotation number of the pump. The controller has a road surface state index obtainment unit that obtains a road surface state index and a target rotation number determination unit that determines a target rotation number of the pump on the basis of the road surface state index.

公开(公告)号：US10167919B2

公开(公告)日：2019-01-01

申请号：US15524260

申请日：2015-11-04

Applicant: KYB Corporation ,  HONDA MOTOR CO., LTD.

Inventor： Masahiro Miwa ,  Kazuma Ando ,  Shinichi Sutou ,  Yasutaka Ohta ,  Koji Takami

IPC: F16F9/38 ,  B60G15/07 ,  F16J3/04 ,  F16J15/52 ,  F16F9/32 ,  B60G15/06

Abstract: A cylinder device includes a cylinder that has one end from which a piston rod extends, a pipe-shaped cover member that has an extendable bellows portion and a small-diameter portion whose inner diameter is smaller than an inner diameter of the bellows portion, the cover member being configured to protect the piston rod, and a capping member fitted into the cylinder, the capping member having a convex portion to which the small-diameter portion of the cover member is locked, at an outer periphery, wherein at the small-diameter portion of the cover member, a bulge portion that bulges outside in a radial direction is formed.

公开(公告)号：US10124644B2

公开(公告)日：2018-11-13

申请号：US15125979

申请日：2015-04-23

Applicant: KYB Corporation

Inventor： Norihiko Kurita

IPC: B60G17/016 ,  B62K25/04 ,  B60G17/08

Abstract: A damper control device includes a rate sensor that detects a pitching angular velocity of a vehicle body, a vehicle speed sensor, a steering angle sensor and a calculation unit that detect a roll angle and a yaw angular velocity of the vehicle body, a pressure sensor that detects a pressure of a contraction-side chamber in a front-wheel side damper, a pressure sensor that detects a pressure of a contraction-side chamber in a rear-wheel side damper, and a correction unit that corrects the pitching angular velocity. The pressures are controlled on the basis of the corrected pitching angular velocity and the pressures. The vehicle speed sensor, the steering angle sensor and the calculation unit detect the roll angle and the yaw angular velocity on the basis of a traveling speed and a steering angle.

公开(公告)号：US20180298922A1

公开(公告)日：2018-10-18

申请号：US15765868

申请日：2016-09-08

Applicant: KYB Corporation

Inventor： Akio MATSUURA

IPC: F15B11/028 ,  F15B13/04

Abstract: In a valve device, first and second spool holes in which first and second spools of first and second unload valves are accommodated, respectively, are formed in a second valve block, opening portions of the first and second spool holes are formed in surfaces in outer surfaces of the second valve block other than contact surfaces with adjacent first and third valve blocks and in parallel with axes of spools accommodated in the adjacent first and third valve blocks.