To provide a booster brake device in which retraction of a brake pedal can be suppressed in the event of vehicle collision.SOLUTION: A booster brake device comprises: a pedal bracket 21 supported by a vehicle rear side of a partition member 11; a brake pedal 22 having a second shaft 221 and suspended from and supported by the pedal bracket 21; and a brake booster 30 having a plunger 34 and an input shaft 35 having a front end supported by the plunger 34 and a rear end supported by the brake pedal 22 to be rotatable around the second shaft 221, the booster brake device is constituted in such a way that: the pedal bracket 21 hangs down when the pedal bracket 21 comes in contact with a guide member 12 located behind the partition member 11 in a longitudinal vehicle direction by receiving impact force from outside; and the axial center C of the second shaft 221 is displaced in a vehicle downward direction to a position below an imaginary line V connecting a first imaginary point 30A and a second imaginary point 30B when the input shaft 35 is rotated around a vehicle width direction by rotation permitting means provided in the brake booster 30.SELECTED DRAWING: Figure 4

    【課題】 車両衝突の際、ブレーキペダルの後退を抑制することが可能な倍力ブレーキ装置を提供する。【解決手段】 隔壁部材11の車両後方側に支持されたペダルブラケット21と、第2軸221を有し、かつペダルブラケット21に吊り下げ支持されたブレーキペダル22と、プランジャ34、および前端がプランジャ34に支持され、かつ後端が第2軸221の回りに回転可能となるようにブレーキペダル22に支持された入力軸35を有するブレーキブースタ30と、を備え、外部からの衝撃力を受けることにより隔壁部材11よりも車両後方に位置する案内部材12にペダルブラケット21が接触すると、ペダルブラケット21が下垂するとともに、ブレーキブースタ30に設けられた回転許容手段により入力軸35が車幅方向の回りに回転すると、第1仮想点30Aと第2仮想点30Bとを結ぶ仮想線Vよりも第2軸221の軸心Cが車両下方に変位する。【選択図】 図4


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    Title :

    BOOSTER BRAKE DEVICE


    Additional title:

    倍力ブレーキ装置


    Contributors:
    OTA TETSUO (author) / SUGA YUSUKE (author)

    Publication date :

    2020-12-17


    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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