PROBLEM TO BE SOLVED: To obtain a hydraulic unit which hardly causes an electrical malfunction even if a brake fluid leaks out of a fluid sump chamber.SOLUTION: In a hydraulic unit comprising a reservoir piston 81 which is inserted into a slide hole 91 formed at a housing 9, and a cover 88 for covering an atmosphere-side opening part of the slide hole 91, a fluid sump chamber 881 for storing a brake fluid which leaks out of a pump 10 is formed at the cover 88. In the hydraulic unit having the fluid sump chamber at an ECU case, an electrical malfunction is liable to occur when the brake fluid leaks out of the fluid sump chamber, however, since the fluid sump chamber 881 is arranged in the housing 9, the electrical malfunction hardly occurs even if the brake fluid leaks out of the fluid sump chamber 881.

    【課題】液溜め室からブレーキ液が洩れた場合でも電気的不具合が発生し難い液圧ユニットとする。【解決手段】ハウジング9に形成された摺動孔91内に挿入されたリザーバピストン81と、摺動孔91の大気側開口部を塞ぐカバー88とを備える液圧ユニットにおいて、ポンプ10から洩れたブレーキ液を溜める液溜め室881をカバー88に形成する。ECUケースに液溜め室を形成した液圧ユニットにおいては、液溜め室からブレーキ液が洩れた場合には電気的不具合が発生し易いが、液溜め室881はハウジング9内に配置されるため、液溜め室881からブレーキ液が洩れた場合でも電気的不具合が発生し難い。【選択図】図2


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    Title :

    HYDRAULIC UNIT OF VEHICLE BRAKE DEVICE


    Additional title:

    車両用ブレーキ装置の液圧ユニット


    Contributors:
    KOYAMA FUMITOSHI (author) / SASAKI SHIN (author) / ONISHI JUN (author)

    Publication date :

    2016-01-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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