公开(公告)号：US20240218889A1

公开(公告)日：2024-07-04

申请号：US18292429

申请日：2022-04-25

Applicant: KYB Corporation

Inventor： Tatsuya ITOU ,  Nobuyuki KOBAYASHI ,  Hirotaka KOBAYASHI

IPC: F15B20/00 ,  F16J1/12

CPC classification number: F15B20/00 ,  F16J1/12

Abstract: A hydraulic cylinder includes: a cylinder tube; a piston rod; a piston member; a rod inner passage provided within the piston rod, a rod inner passage being configured such that a first opening portion opens at an outer circumferential surface of the piston rod in the cylinder tube, and such that a second opening portion opens outside the cylinder tube; and a sensor part provided outside the cylinder tube, the sensor part being configured to detect that the working fluid is guided to the rod inner passage, the piston member is connected to the piston rod in a state in which one-side end surface is in contact with an annular step portion so as to block the first opening portion of the rod inner passage, the annular step portion being provided on the outer circumferential surface of the piston rod, and the sensor part is configured to detect that the working fluid is guided to the rod inner passage from a rod side chamber and a counter rod side chamber through a gap between the step portion and the piston member.

公开(公告)号：US20230324944A1

公开(公告)日：2023-10-12

申请号：US18205190

申请日：2023-06-02

Applicant: KUBOTA CORPORATION ,  KYB CORPORATION

Inventor： Hiroshi HORII ,  Tetsuya AOKI ,  Hirotaka KOBAYASHI

IPC: G05G5/06 ,  G05G5/05

CPC classification number: G05G5/05 ,  G05G5/065 ,  E02F9/2004 ,  G05G2505/00

Abstract: A neutral return mechanism includes an interlocking shaft to be pushed and pulled in an axial direction in conjunction with a swinging operation of an operation member; a housing member to support the interlocking shaft such that the interlocking shaft is movable in the axial direction and accommodate the interlocking shaft such that one of opposite end portions thereof protrudes; a neutral return spring to return the interlocking shaft from a post-movement position to an initial position, the neutral return spring being accommodated in the housing member such that the neutral return spring extends in the axial direction of the interlocking shaft, wherein the housing member includes a supported portion between a spring accommodation portion in which the neutral return spring is accommodated and a protrusion opening through which the interlocking shaft protrudes, the supported portion being supported at a bracket member.