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1. WO2020137891 - SHOCK ABSORBER

Publication Number WO/2020/137891
Publication Date 02.07.2020
International Application No. PCT/JP2019/050112
International Filing Date 20.12.2019
IPC
F16F 9/32 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
32Details
F16F 9/34 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
32Details
34Special valve constructions; Shape or construction of throttling passages
F16F 9/46 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
32Details
44Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
46allowing control from a distance
CPC
F16F 9/32
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
32Details
F16F 9/34
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
32Details
34Special valve constructions
F16F 9/46
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
32Details
44Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
46allowing control from a distance ; , i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
Applicants
  • 日立Astemo株式会社 HITACHI ASTEMO,LTD. [JP]/[JP]
Inventors
  • 山岡 史之 YAMAOKA Fumiyuki
  • 遠藤 穣司 ENDO Joji
Agents
  • 特許業務法人はなぶさ特許商標事務所 HANABUSA PATENT & TRADEMARK OFFICE
Priority Data
2018-24132425.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) SHOCK ABSORBER
(FR) AMORTISSEUR
(JA) 緩衝器
Abstract
(EN)
[Problem] To provide a shock absorber capable of further improving the ride comfort of a vehicle. [Solution] According to the present invention, a pilot orifice part 101 is configured such that a first orifice 131 having a smaller flow passage area than conventional fixed orifices, and a second orifice 134 arranged in parallel to the first orifice 131 are provided on the upstream side of a pilot valve 68 in a pilot passage 35, and an oil liquid is circulated through the second orifice 134 by opening a check valve 117. The flow passage area of the first orifice 131 is formed smaller than the flow passage areas of the conventional fixed orifices, and it is thus possible to reduce a damping force during the opening of a main valve in the soft-side damping force characteristic of an expansion stroke, and to further improve the ride comfort of a vehicle.
(FR)
Le problème décrit par la présente invention est de fournir un amortisseur apte à améliorer davantage le confort de conduite d'un véhicule. La solution selon la présente invention, consiste en une partie orifice pilote (101) qui est conçue de telle sorte qu'un premier orifice (131) ayant une superficie de passage d'écoulement plus petite que les orifices fixes classiques, et un second orifice (134) disposé parallèlement au premier orifice (131) sont disposés sur le côté amont d'une soupape pilote (68) dans un passage pilote (35), et un liquide huileux est mis en circulation à travers le second orifice (134) en ouvrant un clapet anti-retour (117). La surface de passage d'écoulement du premier orifice (131) est formée plus petite que les surfaces de passage d'écoulement des orifices fixes classiques, ce qui permet de réduire une force d'amortissement pendant l'ouverture d'une soupape principale dans la caractéristique de force d'amortissement côté mou d'une course de détente, et d'améliorer davantage le confort de conduite d'un véhicule.
(JA)
【課題】車両の乗り心地をより向上させることが可能な緩衝器を提供する。 【解決手段】パイロット通路35におけるパイロットバルブ68の上流側に、従来の固定オリフィスよりも流路面積が小さい第1オリフィス131と、第1オリフィス131に対して並列に配置された第2オリフィス134とを設け、チェック弁117の開弁により第2オリフィス134に油液を流通させるように、パイロットオリフィス部101を構成した。第1オリフィス131の流路面積を従来の固定オリフィスの流路面積よりも小さくすることで、伸び行程のソフト側減衰力特性時におけるメインバルブの開弁時の減衰力を低減させることが可能であり、車両の乗り心地をより向上させることができる。
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