PROBLEM TO BE SOLVED: To provide a negative-pressure assistor, in which the shape of a reinforcement rib to be mounted in the front shell of the booster shell of a negative-pressure assistor is devised to make the front shell common and to satisfy a demand, in which the installation pitch and the installation angle of a tie-rod hole are made different, with a common front shell.SOLUTION: A front shell 2a of a negative-pressure assistor constituting a booster shell in combination with a rear shell has a reinforcement rib 10 formed by bending the shell. The reinforcement rib 10 is formed along a virtual oval which has a center at the center of the front shell 2a, and which has a longer axis arranged on a straight line L1 jointing the centers of two tie rod holes 12 formed in the front shell 2a.

    【課題】負圧式倍力装置のブースタシェルの前部シェルに設ける補強リブの形状を工夫して前部シェルの共通化を図り、タイロッド孔の設置ピッチと設置角を異ならせる要求に同一前部シェルで応えられるようにすることを課題としている。【解決手段】後部シェルと組み合わせてブースタシェルを構成する負圧式倍力装置の前部シェル2aがシェルを屈曲させて形成される補強リブ10を有しており、その補強リブ10が、楕円の中心が前記前部シェル2aの中心にあり、なおかつ、前部シェル2aに設けられる2個のタイロッド孔12の中心を結ぶ直線L1上に楕円の長軸が配設される仮想楕円に沿って形成されたものにした。【選択図】図2


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    Title :

    NEGATIVE-PRESSURE ASSISTOR


    Additional title:

    負圧式倍力装置


    Contributors:

    Publication date :

    2015-12-17


    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



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