| 摘要 |
<p>PURPOSE:To obtaing rapid braking force, by feeding a large quantity of low pressure working liquid to a brake output portion at the beginning of brake working and a small quantity of high pressure working liquid after said stage. CONSTITUTION:A cylinder body 10 is arranged in liquid chambers 28, 30 by means of a central dash-board 21, and floating piston 29 is fitted to the liquid chamber 28 and a driving piston 31 to the liquid chamber 30. A small diameter cylinder 35 is constituted to the left side of the driving piston 31, a ringed groove is cutting mounted to the inner circumferential surface, and a seal ring 16 is installed to the groove. The groove and the ringed groove 14 of the driving piston 31 and a passage 9 are communicated, and communicated with a reservoir. This device is arranged in such a munner that the difference of the diameters of a cylindrical body 32 and the small diameter cylinder 35 serves as a passage, the passage communicates the liquid chamber 30 and the reservior through the passage 9, and the seal ring 16 functions as the opening and closing valve, thus eliminating wasteful resistance, then forming high pressure liquid to the samll diameter cylinder.</p> |
