| 摘要 |
PURPOSE:To provide a power brake device capable of preventing a push rod from sticking other components by employing a guide section for guiding the axial movement of the push rod. CONSTITUTION:When a power brake device functions as an automatic brake device, a second cylindrical member 31 as the rear portion of a valve body 2 remains stationary at a non-operating position. A first cylindrical member 30 relatively advances toward the first cylindrical member 31 accordingly. While a push rod 20 also advances as the first cylindrical member 30 advances, the axis of the push rod 20 is prevented from deviating in the radial direction since the push rod 20 advances while being guided with the cylindrical portion 1c in the axial direction. |
