公开(公告)号：US20240344581A1

公开(公告)日：2024-10-17

申请号：US18580456

申请日：2022-11-01

Applicant: KYB Corporation

Inventor： Yuki KUROIWA ,  Takao MURATA ,  Takeshi YASUI

IPC: F16F9/19 ,  F16F9/348

CPC classification number: F16F9/19 ,  F16F9/3481 ,  F16F9/3482

Abstract: Valves of the present invention includes: a valve seat member equipped with a port and a seat portion surrounding an outlet end of the port; and an annular leaf valve whose inner periphery is immovably laid on top of the valve seat member and whose outer periphery to be seated on or spaced apart from the seat portion, wherein an external shape of the leaf valve is larger than an internal shape of a seat surface of the seat portion or larger than a virtual circle passing through an inner periphery of a seat surface of each circular arc shaped portion on the seat portion, and is smaller than an external shape of the seat surfaces or smaller than a virtual circle passing through an outer periphery of the seat surface of each circular arc shaped portion.

公开(公告)号：US20190203797A1

公开(公告)日：2019-07-04

申请号：US16331717

申请日：2017-09-06

Applicant: KYB Corporation ,  FUJIKURA RUBBER LTD.

Inventor： Takao MURATA ,  Kazunori FUEKI ,  Takuya TSUKAMOTO

IPC: F16F9/32

CPC classification number: F16F9/3228 ,  F16F9/32 ,  F16F9/3214 ,  F16F9/3221 ,  F16F9/3271

Abstract: A piston rod of a shock absorber includes a pipe material formed of a fiber material and a resin material, and connection members provided to the ends of the pipe material. The pipe material has an inner peripheral surface which has not been subjected to processing for cutting the fiber material, and the connection members have joint parts that are inserted into the inner peripheral surface and are joined to the pipe material with an adhesive.

公开(公告)号：US20180180132A1

公开(公告)日：2018-06-28

申请号：US15738283

申请日：2016-06-08

Applicant: KYB Corporation

Inventor： Yasunori KOBAYASHI ,  Kazunori MASUMOTO ,  Takao MURATA ,  Kazuyuki MAMIYA

IPC: F16F9/06 ,  F16F9/32

Abstract: A mono-tube shock absorber includes a cylinder, a piston slidably inserted into the cylinder, a piston rod coupled to the piston, an upper component group detachably attached to an end portion at a side of an extension-side chamber of the cylinder, a tube that is disposed inside a contraction-side chamber and has one end secured to an end portion at a side of the contraction-side chamber of the cylinder, a valve mechanism detachably attached to the other end side of the tube to partition a reservoir inside the tube, and a free piston that partitions the reservoir into a liquid chamber and a gas chamber.

公开(公告)号：US20180135718A1

公开(公告)日：2018-05-17

申请号：US15572394

申请日：2016-06-08

Applicant: KYB Corporation

Inventor： Yasunori KOBAYASHI ,  Takao MURATA

IPC: F16F9/32

CPC classification number: F16F9/32 ,  F16F9/5126 ,  F16F9/516

Abstract: Provided is a unidirectional shock absorber without losing a damping force reducing effect even with continuous input of high-frequency vibrations. A shock absorber includes: a piston partitioning a cylinder into an extension chamber and a compression chamber; a pressure chamber; a free piston slidably inserted into the pressure chamber; a spring element; an extension chamber-side passage; a compression chamber-side passage; a valve provided to the extension chamber-side passage and configured to offer resistance to a flow from a side closer to the extension chamber to a side closer to the compression chamber; and a check valve provided in parallel with the valve, allowing only a flow from the side closer to the compression chamber to the side closer to the extension chamber, wherein the shock absorber generates a damping force only at the time of elongation.