To reduce collision sound generated when a tail gate is opened, and prevent damage due to collision.SOLUTION: In an opening process of opening a tail gate, during a first period until the tail gate reaches a predetermined halfway point from a closed end, hydraulic fluid in a hydraulic cylinder 2 for opening/closing is returned to a tank 43 by the weight of the tail gate, and in a second period from the halfway point until the tail gate reaches an open end, a hydraulic pump 42 operates, and the hydraulic fluid from the hydraulic cylinder 2 for opening/closing and the hydraulic fluid from the hydraulic pump 42 are combined and returned to the tank 43.SELECTED DRAWING: Figure 2

    【課題】テールゲートの開成時に発生する衝突音を低減させるとともにその衝突による損傷を防止する。【解決手段】テールゲートを開く開工程において、テールゲートが閉端から所定の途中点に到達するまでの第1期間は、開閉用液圧シリンダ2内の作動液がテールゲートの自重の作用でタンク43内に戻され、テールゲートが途中点から開端に到達するまでの第2期間は、液圧ポンプ42が作動し、開閉用液圧シリンダ2からの作動液と液圧ポンプ42からの作動液とが合流してタンク43に戻るように構成した。【選択図】図2


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    Title :

    HYDRAULIC UNIT, DRIVE DEVICE COMPRISING HYDRAULIC UNIT, METHOD FOR OPERATING HYDRAULIC UNIT


    Additional title:

    液圧ユニット、液圧ユニットを備えた駆動機器および液圧ユニットの操作方法


    Contributors:

    Publication date :

    2023-08-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B60P Fahrzeuge zum Transport von Lasten oder zum Befördern, Tragen oder Aufnehmen besonderer Lasten oder Gegenstände , VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS



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