The invention discloses a structure for improving the boosting effect of a vacuum booster. The structure comprises a boosting push rod, a compression cavity, a transition cavity, a high-pressure cavity and a vacuum cavity, wherein a piston, a sealing disc and a first return plate are arranged on the side wall of the boosting push rod, the piston is located in the compression cavity, the first return plate is located in the transition cavity, and the sealing disc can isolate the transition cavity from the sealing cavity; a return spring is arranged between the first return plate and the sealing disc; the high-pressure cavity and the vacuum cavity are separated through a diaphragm, a valve body is arranged in the middle of the diaphragm, a main cylinder push rod is arranged in the valve body, an air valve seat is arranged at the end, facing the transition cavity, of the main cylinder push rod, and the boosting push rod is matched with the groove; a rubber valve is arranged at an end, close to the vacuum cavity, of the transition cavity, a first valve spring is arranged between the rubber valve and the first return plate, and an annular rubber valve is arranged between the rubber valve and the valve body. Under the condition that the vacuum degree is low, pressure difference between the two sides of the diaphragm of the vacuum booster can be increased, and therefore safety of a vehicle is improved.

    本发明公开了一种提升真空助力器助力效果的结构,包括助力推杆、依次连接的压缩腔、过渡腔、高压腔以及真空腔。助力推杆的侧壁上设有活塞、密封盘以及第一回位板,活塞位于压缩腔内,第一回位板位于过渡腔内,密封盘能够将过渡腔与密封腔隔离;第一回位板与密封盘之间设有回位弹簧。高压腔与真空腔之间通过膜片隔开,膜片的中间部位设有阀体,阀体内设有主缸推杆,主缸推杆面向过渡腔的一端设有空气阀座,助力推杆与凹槽相配;过渡腔靠近真空腔的一端设有橡胶阀门,橡胶阀门与第一回位板之间设有第一阀门弹簧,橡胶阀门与阀体之间设有环状的橡胶阀。本发明在真空度较低的情况下,能够增大真空助力器膜片两边的压力差,从而提高车辆的安全性。


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    Title :

    Structure for improving boosting effect of vacuum booster


    Additional title:

    一种提升真空助力器助力效果的结构


    Contributors:
    GE FEI (author) / QI DONGYA (author) / XU SANQIANG (author) / LIU DI (author) / CHANG QINGJUN (author)

    Publication date :

    2021-12-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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