PROBLEM TO BE SOLVED: To reduce an injury value with respect to a pedestrian while making the assembly accuracy less likely to affect on actuation.SOLUTION: On the front side ACT 110 for lifting a hood, the inside diameter of the increased-diameter inner peripheral surface 114A of the open end of a cylinder 112 is set larger than the outside diameter of an O ring 126 of an ACT body 120. In the lifted position, the increased-diameter inner peripheral surface 114A is disposed radially outside the O ring 126. Thus, without forming a gas removal hole in the cylinder 112, gas in the cylinder 112 can be removed from between the increased-diameter inner peripheral surface 114A and the O ring 126. This makes it possible to move the cylinder 112 without being affected by the periphery of the opening of the gas removal hole. Accordingly, compared to a case where a gas removal hole is formed in the cylinder 112, the assembly accuracy of the front ACT 110 can be made less likely to affect. In addition, since in a lifted position, gas is restricted to remain in the cylinder 112, reaction force of hood with respect to a pedestrian can be reduced.SELECTED DRAWING: Figure 1

    【課題】作動に対する組付精度による影響を受け難くしつつ歩行者に対する傷害値を低くする。【解決手段】フードを持上げる前側ACT110では、シリンダ112の開口端側の拡径内周面114Aの内径が、ACT本体120のOリング126の外径より大きく設定され、持上位置では、拡径内周面114AがOリング126に対して径方向外側に配置される。これにより、シリンダ112にガス抜き孔を形成することなく、シリンダ112内のガスを拡径内周面114AとOリング126との間から抜くことができる。このため、ガス抜き孔の開口部周辺による影響を受けることなく、シリンダ112を移動させることができる。よって、シリンダ112にガス抜き孔を形成する場合に比べて、前側ACT110の組付精度による影響を受け難くできる。また、持上位置では、ガスがシリンダ112内に残留することが抑制されるため、歩行者に対するフードの反力を低減できる。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    ACTUATOR FOR POP-UP HOOD DEVICE FOR VEHICLE AND POP-UP HOOD DEVICE FOR VEHICLE


    Additional title:

    車両用ポップアップフード装置のアクチュエータ及び車両用ポップアップフード装置


    Contributors:
    NARITA SOTARO (author) / AOYAMA JOJI (author)

    Publication date :

    2017-03-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B62D MOTOR VEHICLES , Motorfahrzeuge / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / F16J Kolben , PISTONS



    VEHICLE POP-UP HOOD DEVICE ACTUATOR AND VEHICLE POP-UP HOOD DEVICE

    NARITA SOTARO / AOYAMA JOJI | European Patent Office | 2018

    Free access

    VEHICLE POP-UP HOOD DEVICE ACTUATOR AND VEHICLE POP-UP HOOD DEVICE

    NARITA SOTARO / AOYAMA JOJI | European Patent Office | 2017

    Free access

    Vehicle pop-up hood device actuator and vehicle pop-up hood device

    NARITA SOTARO / AOYAMA JOJI | European Patent Office | 2017

    Free access

    HOOD DEVICE FOR VEHICLE AND VEHICLE WITH HOOD

    YANOGUCHI TOMOKAZU | European Patent Office | 2019

    Free access

    VEHICLE HOOD LOCK DEVICE

    NAGAMI TAKUZO / KUCHIKI KENICHI | European Patent Office | 2022

    Free access