PROBLEM TO BE SOLVED: To obtain a structure which can reduce a power consumption amount, and can suppress a reaction force which is applied to a member for constituting an expansion mechanism when a servo mechanism is operated.SOLUTION: An electrically-driven disc brake device comprises: a feed screw mechanism 13a which pushes out a piston 12a to an outer side on the basis of rotation of an electric motor 9a until a clearance between an inner pad 2a and a side face of a rotor is eliminated; a ball lamp mechanism 22 which pushes out the piston 12a to the outer side by being operated on the basis of the rotation of the electric motor 9a after the clearance is eliminated; and a self-servo mechanism 69 which generates an axial force in a direction in which the inner pad 2a is pushed to the rotor on the basis of a brake tangent force acting on the inner pad 2a by the push of the inner pad 2a to the rotor by the operation of the ball lamp mechanism 22. The disc brake device also comprises a second thrust ball bearing 53 which receives a reaction force of the axial force generated by the operation of the self-servo mechanism 69.SELECTED DRAWING: Figure 1

    【課題】消費電力量を抑える事ができ、且つ、前記サーボ機構が作動した際に拡張機構を構成する部材に加わる反力を小さく抑えられる構造を実現する。【解決手段】電動モータ9aの回転に基づいて、インナパッド2aとロータの側面との間の隙間を解消させるまで、ピストン12aをアウタ側に押し出す送りねじ機構13aと、この隙間が解消した後、電動モータ9aの回転に基づいて作動する事により、ピストン12aをアウタ側に押し出すボールランプ機構22と、ボールランプ機構22が作動してインナパッド2aがロータに押し付けられる事によりこのインナパッド2aに作用するブレーキ接線力に基づいて、インナパッド2aをロータに押し付ける方向の軸力を発生する自己サーボ機構69とを設ける。更に、自己サーボ機構69が作動する事により発生した軸力の反力を受ける為の第二のスラスト玉軸受53を設ける。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    ELECTRICALLY-DRIVEN DISC BRAKE DEVICE


    Additional title:

    電動式ディスクブレーキ装置


    Contributors:

    Publication date :

    2016-10-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



    ELECTRICALLY DRIVEN BRAKE DEVICE

    MURAMATSU MAKOTO / YAMAZAKI TATSUYA / SAOYAMA YUKI et al. | European Patent Office | 2015

    Free access

    Brake device and electrically driven brake cylinder

    WANG ZHEBO / WANG MENG / DING YING et al. | European Patent Office | 2022

    Free access

    ELECTRICALLY-DRIVEN VEHICULAR BRAKE DEVICE

    UENO MASAYUKI | European Patent Office | 2018

    Free access

    ELECTRICALLY-DRIVEN LINEAR MOTION ACTUATOR AND ELECTRICALLY-DRIVEN BRAKE DEVICE

    YAMAZAKI TATSUYA | European Patent Office | 2016

    Free access

    ELECTRICALLY DRIVEN BRAKE ACTUATOR

    TAKAGI HIROSHI | European Patent Office | 2016

    Free access