| 摘要 |
PURPOSE: A brake booster for a vehicle is provided to improve the braking sense of a driver by reducing the vibration according to a sudden operation of a brake pedal. CONSTITUTION: A brake booster for a vehicle comprises a casing, an input shaft, an output shaft, a first tie rod(41), a second tie rod(42), a first return spring(51), and a second return spring(52). The casing comprises a front cell and a rear cell and is divided by a diaphragm(21). The input shaft is engaged by operating a brake pedal and moves in a straight lined path. The output shaft receives power through the input shaft and moves in a straight line in the center of the casing. The first tie rod penetrates the front cell, the diaphragm, and the rear cell in a position which is eccentric from the center of the casing. The second tie rod is installed in parallel with the first tie rod in the position corresponding to the first tie rod. The first return spring penetrates the first tie rod and is elastically expanded by being engaged with the movement of the output shaft. The second return spring penetrates the second tie rod and elastically supports the front cell and the diaphragm with the first return spring. |
