The present invention relates to a valve cylinder for a brake booster. According to the embodiments of the present invention, the valve cylinder for a brake booster includes: a poppet supported on the inner circumference of a cylinder body and including an air inflow hole at the center, wherein the poppet is formed in a ring shape; a control plunger including an insertion hole in which an open end faces the poppet, wherein the insertion hole includes a connection unit and an expansion unit; an input rod connected to a brake pedal and connected to the insertion hole by passing through the air inflow hole, wherein the input rod is controlled with the control plunger; and an air inflow rate control member formed in a ring shape and fixed to the poppet by being supported on the expansion unit in a circumferential direction, wherein the air inflow rate control member includes a connection hole on the outer circumference to be opened and closed as the control plunger slides. The connection unit has a larger diameter than that of the air inflow hole by being extended to the outside in the circumferential direction. The expansion unit is supported on the poppet by being extended in an axial direction from a frame of the connection unit. The valve cylinder for a brake booster can improve a handling sense of a driver by controlling the amount of air flowing inside through a gap between the poppet and the control plunger when the driver steps on the brake pedal.

    본 실시예들에 의한 브레이크 부스터의 밸브실린더는, 환형으로 형성되어 중심부에 대기유입홀이 구비되고, 실린더본체의 내주면에 지지되는 포핏, 개구된 단부가 포핏을 향하는 삽입공이 구비되고 삽입공에는 경방향 바깥으로 연장되어 대기유입홀보다 큰 직경을 가지는 연결부와 연결부의 테두리에서 축방향으로 연장되어 포핏에 지지되는 확경부가 구비되는 컨트롤 플런저, 브레이크 페달과 연결되어 대기유입홀을 지나 삽입공에 결합되어 컨트롤 플런저와 함께 조작되는 인풋로드, 환형으로 형성되어 확경부에 경방향으로 지지되며 포핏에 고정되되 컨트롤 플런저가 슬라이딩됨에 따라 개폐되도록 외주면에 연통홀이 구비되는 대기유입량조절부재를 포함하여, 운전자가 브레이크 페달을 밟는 초기에 컨트롤 플런저와 포핏 사이의 이격된 틈으로 유입되는 대기의 양을 조절하여 운전자의 조작감을 향상시킬 수 있다.


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    Title :

    Valve Cylinder of Brake Booster


    Additional title:

    브레이크 부스터의 밸브실린더


    Contributors:

    Publication date :

    2020-02-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

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



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