Damping force adjustable shock absorber

A damping force adjustable shock absorber includes a flow path (an oil passage of a piston) in which a flow of hydraulic fluid is generated due to a movement of a piston rod, and a damping force adjustment valve provided in the flow path and configured to be subjected to an adjustment of an opening/...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	Yamashita, Mikio
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING PERFORMING OPERATIONS SHOCK-ABSORBERS SPRINGS THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLE SUSPENSION ARRANGEMENTS VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A damping force adjustable shock absorber includes a flow path (an oil passage of a piston) in which a flow of hydraulic fluid is generated due to a movement of a piston rod, and a damping force adjustment valve provided in the flow path and configured to be subjected to an adjustment of an opening/closing operation by a solenoid. A frequency adaptive mechanism is provided in the flow path in series with the damping force adjustment valve. The frequency adaptive mechanism is configured to reduce a damping force for a high-frequency vibration. The frequency adaptive mechanism includes a second valve mechanism (a compression-side damping force generation valve and an extension-side damping force generation valve) configured to apply a resistance force to a flow of the hydraulic fluid from an upstream-side chamber (an upper-portion chamber or a lower-portion chamber) to a downstream-side chamber (the lower-portion chamber or the upper-portion chamber).