BRAKE DRIVE BOOSTER REACTIVE DEVICE Russian patent published in 2005 - IPC

FIELD: mechanical engineering; brake boosters.

SUBSTANCE: proposed reactive device has reactive plate 33 made of incompressible or practically in-compressible material. Said plate is fitted in socket limited at first end in longitudinal direction by first surface, and at second end, opposite in longitudinal direction to first end, by second surface external in radial direction, formed by pneumatic piston pressed to plate, and third surface arranged inside second surface and formed by plunger pressed to plate, and fourth cylindrical surface passing in axial direction from first surface to second and third surface. Reactive device has at least one deformable elastic device deformation of which at effort at input exceeding definite value makes it possible to increase volume between first and second surfaces occupied by reactive plate 33, and device 45 for preliminarily compression of elastic device. Brake drive pneumatic booster contains distributor which thrust against reactive device.

EFFECT: simplified design and reduced cost of device, possibility of changing of amplification factor at braking in brake pneumatic booster with conventional piston.

23 cl, 14 dwg