A hydraulic buffer having a side flow path to be opened with a delay, according to the present invention, comprises: a body having a first accommodation space formed therein; a piston rod inserted into the body, having a reciprocating floating piston provided therein, and including a second accommodation space and a third accommodation space, which are divided by the floating piston; a rod block coupled to one side of the piston rod inserted into the body so as to form a boundary between the first accommodation space and the second accommodation space; a hollow pipe, of which one end is fixed on the inside of the body so as to be blocked and the other end penetrates the rod block and is provided with a movable block opened towards the second accommodation space, and having a sub flow hole penetratingly provided such that the inner space of the hollow pipe and the first accommodation space outside the hollow pipe communicate with each other; and a side flow path formed through the inner space of the hollow pipe and the second accommodation space, wherein the side flow path is provided to be blocked in a normal state having no external force, while the gap between the inner space of the hollow pipe and the second accommodation space is opened when the piston rod is inserted into the body by external force.

    본 발명의 지연개방되는 사이드유로가 구비된 유압버퍼는 내부에 제1수용공간이 형성되는 바디, 바디에 삽입되고, 내부에 왕복 가능한 플로팅피스톤이 구비되며, 플로팅피스톤에 의해 구획되는 제2수용공간 및 제3수용공간을 포함하는 피스톤로드, 바디에 삽입된 피스톤로드의 일측에 결합되어 제1수용공간과 제2수용공간의 경계를 형성하는 로드블록, 바디의 내측에 일단이 고정되어 폐색되고, 타단은 로드블록을 관통하여 제2수용공간을 향해 개방된 유동블록이 구비되며, 내측공간과 외측의 제1수용공간이 서로 관통되도록 서브유동홀이 구비되는 중공관 및 중공관의 내측공간와 제2수용공간을 관통하여 형성되는 사이드유로를 포함하고, 사이드유로는 외력이 없는 정상상태에서 폐색되고, 외력에 의해 피스톤로드가 바디로 삽입 시 중공관의 내측공간과 제2수용공간 사이가 개방되도록 구비된다.


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    Title :

    HYDRAULIC BUFFER WITH MULTI-FLOWPATH


    Additional title:

    지연개방되는 사이드유로가 구비된 유압버퍼


    Contributors:

    Publication date :

    2018-07-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B61G Kupplungen besonders ausgebildet für Eisenbahnfahrzeuge , COUPLINGS SPECIALLY ADAPTED FOR RAILWAY VEHICLES / F16F SPRINGS , Federn



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