公开(公告)号：US20220316549A1

公开(公告)日：2022-10-06

申请号：US17690752

申请日：2022-03-09

Applicant: KYB CORPORATION

Inventor： Takeshi YASUI ,  Masaki KOYAMA ,  Naoki YAMAMOTO

IPC: F16F9/516 ,  F16F9/348 ,  F16F9/06

Abstract: A shock absorber is provided. The shock absorber of the present invention includes a shock absorber main body, a damping passage, a primary damping force generation component, and a secondary damping force generation component. The shock absorber main body has an outer tube and a rod and is stretchable. The damping passage communicates operating chambers with each other provided in the shock absorber main body. The primary and secondary damping force generation components are provided in series with the damping passage. The secondary damping force generation component includes a secondary valve, an annular facing portion, and a valve stopper. The annular facing portion faces the secondary valve with an annular gap between the annular facing portion and the secondary valve. The valve stopper has elasticity to allow bending, and when the secondary valve bends and comes in contact with the valve stopper, restricts the secondary valve from bending.

公开(公告)号：US20230392666A1

公开(公告)日：2023-12-07

申请号：US18032295

申请日：2021-11-30

Applicant: KYB Corporation

Inventor： Masaki KOYAMA ,  Norihiro ASANO ,  Takeshi YASUI

IPC: F16F9/36 ,  F16F9/32 ,  F16F9/348 ,  F16F9/512 ,  F16J15/16 ,  F16J15/32

CPC classification number: F16F9/368 ,  F16F9/3214 ,  F16F9/348 ,  F16F9/5126 ,  F16F9/3278 ,  F16J15/162 ,  F16J15/32 ,  F16F2230/30 ,  F16F9/19

Abstract: A sealing device for hydraulic equipment according to the invention includes an outer member having an annular shape, an inner member inserted into the outer member, and a seal ring housed in an annular groove disposed in the outer circumference of the inner member and abutting on the outer member to prevent a liquid from passing through a gap between the outer member and the inner member. The annular groove of the inner member has a bottom portion including a recess for restraining axial displacement of the seal ring relative to the annular groove.

公开(公告)号：US20240418233A1

公开(公告)日：2024-12-19

申请号：US18704088

申请日：2022-11-01

Applicant: KYB Corporation

Inventor： Masaki KOYAMA ,  Kiyoshi KANI ,  Takeshi YASUI

IPC: F16F9/36 ,  F16F9/06 ,  F16F9/19 ,  F16F9/348

Abstract: A seal device for a hydraulic apparatus according to the present invention includes an annular main piston split body (outer member), a sub piston split body (inner member) inserted into inside the main piston split body (outer member), and a seal ring accommodated in an annular groove provided in the outer circumference of the sub piston split body (inner member) and abutting on the other of the main piston split body (outer member) to prevent a liquid from passing through a gap between the main piston split body (outer member) and the sub piston split body (inner member), in which the seal ring has a self-lubricating property and has a cylindrical surface centered on an axis on an inner peripheral surface (bottom facing surface) facing a bottom of the annular groove.