| 摘要 |
The vacuum brake boosters used today require a relatively heavy vacuum housing to gain the necessary stiffness for transmitting the mechanical actuating force. According to the present invention draw bars extend from one housing wall to the other parallel to the push rod and penetrating the vacuum piston in a sealed manner to receive the mechanical force. Thus, the vacuum housing does not receive the mechanical force and as a result can be constructed of lighter material. The movable sealing means provided between the vacuum piston and the draw-bars are in the form of small rolling diaphragms. |
