PROBLEM TO BE SOLVED: To prevent formation of burring in an opening for exposing an oil supply cylinder, and prevent inflow of fuel, etc. inside a machine body by maintaining sealability of a packing during hoisting, transportation, etc. in an engine working machine.SOLUTION: A packing 20 is provided, which is held between a circumferential edge lower surface of an opening 15 for exposing an oil supply cylinder and a circumferential edge upper surface of an oil supply cylinder 9a in a fuel tank 9. The packing 20 is supplied with a cylindrical convex part 21 that covers at least part of a circumferential edge of the oil supply cylinder 9a, and extends above the circumferential edge upper surface of the opening 15 for exposing the oil supply cylinder, a packing body part 22 connected to the lower end of the cylindrical convex part 21, which is held between the circumferential edge lower surface of the opening 15 for exposing the oil supply cylinder and the circumferential edge upper surface of the oil supply cylinder 9a in the fuel tank 9, and a plurality of annular projections 23 formed on the upper surface of the packing body part 22.SELECTED DRAWING: Figure 1

    【課題】エンジン作業機において、給油筒露出用開口にバーリングを成形することなく、また、吊上時、輸送時などにおいても、パッキンのシール性を維持して機械本体内部への燃料等の流入を防止する。【解決手段】給油筒露出用開口15の周縁下面と燃料タンク9における給油筒9aの周縁上面との間に挟持されるパッキン20を設ける。このパッキン20に、給油筒9aの少なくとも一部の周縁を覆うと共に、給油筒露出用開口15の周縁上面よりも上方へ延びる筒状凸部21と、筒状凸部21の下端に連続し、給油筒露出用開口15の周縁下面と燃料タンク9における給油筒9aの周縁上面との間に挟持されるパッキン本体部22と、パッキン本体部22の上面に形成された複数の環状突起23とを設ける。【選択図】図1


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    Title :

    ENGINE WORKING MACHINE


    Additional title:

    エンジン作業機


    Contributors:

    Publication date :

    2017-06-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / F16J Kolben , PISTONS



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