公开(公告)号：US12247638B2

公开(公告)日：2025-03-11

申请号：US17414630

申请日：2019-12-05

Applicant: KYB Corporation

Inventor： Hiroshi Funato ,  Tomoo Kubota ,  Masaya Omote ,  Yuuta Furukawa

IPC: F16F9/32 ,  F16F9/516

Abstract: A fluid pressure shock absorber includes a piston connected to an end of a piston rod and slidably moving inside a cylinder tube and dividing the cylinder tube into a piston-side chamber and a rod-side chamber, a rod internal space formed inside the piston rod, a first communication passage communicating the rod-side chamber with the rod internal space, a second communication passage formed in the piston and communicating the piston-side chamber with the rod internal space, and a restrictor provided in the second communication passage to apply a resistance to a flow of a working fluid passing through the second communication passage.

公开(公告)号：US20170158015A1

公开(公告)日：2017-06-08

申请号：US15321573

申请日：2015-06-24

Applicant: KYB CORPORATION

Inventor： Tomoo Kubota ,  Masatoshi Okumura

IPC: B60G17/018 ,  B60G17/0165 ,  B60G17/016

CPC classification number: B60G17/018 ,  B60G17/015 ,  B60G17/0164 ,  B60G17/0165 ,  B60G17/06 ,  B60G2400/91

Abstract: A damper speed calculation unit 42 reads a suspension displacement and performs a differential operation on it, to thereby calculate a damper speed. This differential operating characteristic includes a gain characteristic having a gradient larger than a gradient of a gain characteristic of an exact differential in an unsprung resonance frequency region. With this, the phase delay is suppressed and the control performance is enhanced.

公开(公告)号：US09771999B2

公开(公告)日：2017-09-26

申请号：US14904707

申请日：2014-07-16

Applicant: KYB Corporation

Inventor： Tomoo Kubota

IPC: F16F9/06 ,  B60G13/08

CPC classification number: F16F9/061 ,  B60G13/08 ,  B60G2202/24 ,  B60G2206/41 ,  F16F9/067 ,  F16F2222/12

Abstract: A mono-tube type hydraulic shock absorber includes a cylinder, a free piston that partitions the inside of the cylinder into a liquid chamber in which a hydraulic fluid is filled and a gas chamber in which a gas is filled, a piston slidably inserted into the cylinder, the piston partitioning the liquid chamber into two working chambers, a sealing ring provided on an outer periphery of the free piston, the sealing ring being configured to seal between the cylinder and the free piston, and a lubricating oil enclosed within the gas chamber to lubricate between the sealing ring and the cylinder.

公开(公告)号：US20170267049A1

公开(公告)日：2017-09-21

申请号：US15505482

申请日：2015-07-29

Applicant: KYB Corporation

Inventor： Tomoo Kubota ,  Masatoshi Okumura

IPC: B60G17/019 ,  B60G17/06

CPC classification number: B60G17/01933 ,  B60G17/015 ,  B60G17/06 ,  B60G2400/202 ,  B60G2500/10 ,  B60G2600/181

Abstract: [Object] To provide a suspension control apparatus, a suspension control method, and a program, by which unsprung vibrations or sprung vibrations of each wheel can be efficiently suppressed.[Solving Means] A suspension control apparatus (20) includes a signal generator (40) and a control unit (50). The signal generator (40) generates a first state signal regarding unsprung vibrations of a first wheel and a second state signal regarding unsprung vibrations of a second wheel. The control unit (50) generates, on the basis of the first and second state signals, a control signal for mutually and cooperatively controlling a first damper mounted on the first wheel and a second damper mounted on the second wheel.

公开(公告)号：US20170267048A1

公开(公告)日：2017-09-21

申请号：US15505507

申请日：2015-07-29

Applicant: KYB CORPORATION

Inventor： Tomoo Kubota ,  Masatoshi Okumura

IPC: B60G17/0185

CPC classification number: B60G17/0185 ,  B60G17/0165 ,  B60G17/018 ,  B60G17/08 ,  B60G2400/102 ,  B60G2400/204 ,  B60G2400/208 ,  B60G2400/252 ,  B60G2500/10 ,  B60G2800/162 ,  B60G2800/916

Abstract: A signal processing apparatus (20) is a signal processing apparatus for a suspension control apparatus and includes a first determination unit (41). The first determination unit (41) is configured to select any one of a plurality of detection signals including information regarding unsprung vibrations of a first wheel, which are acquired from a plurality of sensors mounted on a vehicle, and determine unsprung vibrations of the first wheel on the basis of the selected one detection signal.