PROBLEM TO BE SOLVED: To provide a diaphragm of a reservoir tank that suppresses creases from occurring due to buckling of a bellows part when filling operating fluid thereinto while vacuuming a hydraulic path and allows the bellows part to automatically return to an original shape after filling the operating liquid.SOLUTION: A diaphragm 9 comprises a flange part 9a at an outer end which is placed at an upper opening edge 5c of a reservoir main body 5, a bellows part 9b provided inside the flange part 9a, and a plane part 9c, provided inside a lower end of the bellows part 9b, which follows change of fluid level of operating fluid. The bellows part 9b is formed in a concave-convex shape in which concave parts 9e and convex parts 9f are continuously provided, where the concave parts 9e and the convex parts 9f are provided at an outer periphery side and an inner periphery side thereof respectively. On two peripheral surfaces forming the convex parts are formed with gathering parts 9g respectively. The gathering parts 9g are constituted of upward fold lines or a plurality of pleats 9h having the upward lines formed therein in a vertical direction, and are formed across the whole circumferences of the two peripheral surfaces.SELECTED DRAWING: Figure 1

    【課題】油圧経路を真空引きしながら作動液を充填する際に、蛇腹部の座屈による折り皺の発生を抑制し、作動液充填後に蛇腹部が元の形状に自動的に復帰するリザーバタンクのダイヤフラムを提供する。【解決手段】ダイヤフラム9は、リザーバ本体5bの上部開口縁5cに載置される外端のフランジ部9aと、フランジ部9aの内側に設けられる蛇腹部9bと、蛇腹部9bの下端内側に設けられ、作動液の液面の変化に追従する平面部9cとを備える。蛇腹部9bは、凹状部9eと凸状部9fとが連続して設けられる凹凸状に形成され、外周側に凹状部9eが、内周側に凸状部9fがそれぞれ設けられる。凸状部を形成する2つの周面には、ギャザー部9gがそれぞれ形成されている。ギャザー部9gは、上下方向に山折り線、若しくは、谷折り線を設けた複数の襞9hで構成され、前記2つの周面の全周に亘って形成される。【選択図】 図1


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    Title :

    DIAPHRAGM OF RESERVOIR TANK


    Additional title:

    リザーバタンクのダイヤフラム


    Contributors:

    Publication date :

    2017-08-24


    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 / F16J Kolben , PISTONS



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