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    Dual lever ratio brake activating apparatus
    14.
    发明授权
    Dual lever ratio brake activating apparatus 失效
    双重比率制动器激活装置

    公开(公告)号：US3633366A

    公开(公告)日：1972-01-11

    申请号：US3633366D

    申请日：1970-03-30

    Applicant: BENDIX CORP

    Inventor： CRIPE MAXWELL L

    IPC: B60T13/10 ,  B60T13/52 ,  F15B7/00 ,  F15B13/10 ,  G05G1/04

    CPC classification number: B60T13/10 ,  B60T13/52 ,  Y10T74/20564 ,  Y10T74/2057

    Abstract: A brake-activating apparatus, allowing a dual lever ratio for applying a force from the brake pedal to a valve-operating rod of a power booster which communicates with the master cylinder. A brake-activating lever arm is pivotally secured to a vehicle. A pivot pin carrying a first force transmitting member is located at a fixed distance from the end of the lever arm. A yoke member, attached to the lever arm at a different fixed distance from the end, is connected to a vacuum chamber housing. A diaphragm contained within the vacuum chamber is secured to a second force transmitting member. The valve-operating rod for a power booster communicating with the master cylinder has a bored chamber to receive the first transmitting member and a U-shaped member surrounding the chamber to secure the second transmitting member. When the brake lever is moved, the applied force is transmitted through the yoke and second transmitting member as long as the pressure differential retains the diaphragm member in a fixed position. If the diaphragm member is free to move, the first transmitting member contacts the end of the bored chamber and transfers the applied force from the lever arm, at a different ratio, to the valve-operating rod communicating with the master cylinder. In another embodiment, the second force transmitting member carries the applied force until the force required to move the valve-operating rod is greater than a resilient member whereupon the resilient member collapses permitting the applied force to be transmitted through the first force transmitting member.

    Abstract translation: 一种制动激活装置，允许双重杆比率将来自制动踏板的力施加到与主缸连通的动力助力器的阀操作杆。 枢轴固定在车辆上的制动激活杆臂。 承载第一力传递构件的枢轴销定位在与杠杆臂的端部固定的距离处。 以与端部不同的固定距离附接到杠杆臂的轭构件连接到真空室壳体。 包含在真空室内的隔膜固定到第二力传递构件。 用于与主缸连通的动力助力器的阀操作杆具有用于接收第一传动构件的钻孔室和围绕室的U形构件以固定第二传递构件。 当制动杆移动时，只要压差将隔膜构件保持在固定位置，施加的力就通过轭和第二传递构件传递。 如果隔膜构件自由移动，则第一传递构件接触钻孔室的端部，并且以不同的比例将杠杆臂施加的力传递到与主缸连通的阀操作杆。 在另一个实施例中，第二力传递构件承载施加的力，直到移动阀操作杆所需的力大于弹性构件，于是弹性构件塌缩，允许施加的力通过第一力传递构件传递。

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