PROBLEM TO BE SOLVED: To provide a suspension device capable of functioning as an active suspension, low in energy consumption, with simple construction and at low costs.SOLUTION: A suspension device S1 comprises: a dumper D including a cylinder 1, a piston 2 inserted movably into the cylinder 1 for partitioning the inside of the cylinder 1 into an extension side chamber R1 and a pressure side chamber R2, a reservoir R, an attenuation passage 4 for communicating with the extension side chamber R1 and the pressure side chamber R2, a base valve 5 for applying a resistance to the flow of the fluid from the pressure side chamber R2 toward the reservoir R, a suction passage 6 for allowing only the flow of a fluid from the reservoir R to the pressure side chamber R2, and an attenuation valve 7 disposed midway of the attenuation passage 4 for applying a resistance to the flow of the passing fluid; a pump passage 8 in parallel with the attenuation passage 4 for causing the extension side chamber R1 and the pressure side chamber R2 to communicate with each other; a bi-direction delivery type pump 9 disposed midway of the pump passage 8; and an extension side suction passage 10 for allowing only the flow of the fluid from the reservoir R to the extension side chamber R1.
【課題】アクティブサスペンションとして機能できるとともに、エネルギ消費が少なく、簡単な構成でコストも安価なサスペンション装置を提供する。【解決手段】本発明のサスペンション装置S1は、シリンダ1と、シリンダ1内に移動自在に挿入されてシリンダ1内を伸側室R1と圧側室R2とに区画するピストン2と、リザーバRと、伸側室R1と圧側室R2と連通する減衰通路4と、圧側室R2からリザーバRへ向かう流体の流れに抵抗を与えるベースバルブ5と、リザーバRから圧側室R2へ向かう流体の流れのみを許容する吸込通路6と、減衰通路4の途中に設けられて通過する流体の流れに抵抗を与える減衰バルブ7とを備えたダンパDと、減衰通路4に並列して伸側室R1と圧側室R2と連通するポンプ通路8と、ポンプ通路8の途中に設けた双方向吐出型のポンプ9と、リザーバRから伸側室R1へ向かう流体の流れのみを許容する伸側吸込通路10とを備えた。【選択図】図1
BUFFERING DEVICE
緩衝器
2015-06-04
Patent
Electronic Resource
Japanese
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