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    • 9. 发明授权
    • Brake boosting system
    • 制动助力系统
    • US06183049B2
    • 2001-02-06
    • US09226113
    • 1999-01-07
    • Hiroyuki OkaHidefumi InoueYoshiyasu TakasakiMasahiro ShimadaMamoru SawadaYuzo Imoto
    • Hiroyuki OkaHidefumi InoueYoshiyasu TakasakiMasahiro ShimadaMamoru SawadaYuzo Imoto
    • B60T844
    • B60T8/442B60T8/3275B60T8/328B60T8/441B60T8/4872B60T13/168B60T13/686
    • In a brake boosting system the present invention, as it is decided that brake assist is necessary, a pump 53 is driven, and a solenoid valve 72 is switched to its communication position, and a solenoid shut-off valve 75 is opened. Then, the pump 53 sucks brake fluid from a reservoir 9 through the solenoid valve 72 and sends out the brake fluid to the pressure intensifying chamber 21 through the solenoid shut-off valve 75. At this point, an output shaft 11 has already advanced and a radial hole 38 is positioned ahead of a seventh cup sealing member 31 so that the pressure intensifying chamber 21 and the reaction chamber 33 are shut off from the reservoir 9 so as to be in the sealed state. Therefore, pump discharge pressure is supplied to the pressure intensifying chamber 21 and the reaction chamber 33 so that the pressure in these chambers is intensified. Since the intensified pressure acts on the primary piston 12, the master cylinder pressure is intensified to a value greater than that of normal braking. As mentioned above, by intensifying the master cylinder pressure when necessary, large braking force can be obtained with a simple structure.
    • 在本发明的制动助力系统中,由于需要制动辅助,所以驱动泵53,电磁阀72切换到其连通位置,螺线管截止阀75打开。 然后,泵53通过电磁阀72从储存器9吸入制动流体,并通过螺线管截止阀75将制动流体送出到增压室21.此时,输出轴11已经前进, 径向孔38位于第七杯密封构件31的前方,使得增压室21和反应室33从储存器9切断以便处于密封状态。 因此,将泵排出压力供给到增压室21和反应室33,使得这些室中的压力增强。 由于增压作用在主活塞12上,所以主缸压力增大到比正常制动大的值。 如上所述,通过在必要时增大主缸压力,能够以简单的结构获得大的制动力。
    • 10. 发明授权
    • Hydraulic pressure type booster
    • 液压式助力器
    • US6164070A
    • 2000-12-26
    • US173760
    • 1998-10-16
    • Michio KobayashiMasahiro ShimadaSatoru Watanabe
    • Michio KobayashiMasahiro ShimadaSatoru Watanabe
    • B60T13/12B60T13/14B60T13/00
    • B60T13/145
    • The collar 13 for slidably supporting and guiding a valve body of the control valve 55 of the hydraulic pressure type booster 1 is press-fitted into the small diameter portion 9a of the stepped hole 9 of the power piston 8. The valve seat member 10 of the control valve 55 is also press-fitted into the small diameter portion 9a. Further, the small diameter protrusion 6b of the stepped cylindrical protrusion 6a of the plug 6, which divides the power chamber 25, is also press-fitted into the small diameter portion 4a of the stepped hole 4 of the housing 3. In the cylindrical member 17 in which the second valve seat 17a of the control valve 55 is formed, the stopper 17b to restrict a limit of retraction of the input shaft 18 is integrally formed. Further, the cylindrical fixing member 11 to fix the flange 10a of the valve seat member 10 is fixed to the power piston 8 with C ring 12 in the axial direction.
    • 用于可滑动地支撑和引导液压式助力器1的控制阀55的阀体的轴环13压配合到动力活塞8的阶梯孔9的小直径部分9a中。阀座构件10 控制阀55也压配合到小直径部分9a中。 此外,分隔动力室25的塞子6的阶梯状的圆筒形突出部6a的小直径突起6b也被压配合到壳体3的台阶孔4的小直径部分4a中。在圆柱形构件 如图17所示,其中形成有控制阀55的第二阀座17a,限制输入轴18的回缩极限的止动器17b一体形成。 此外,用于将阀座构件10的凸缘10a固定的圆筒形固定构件11在轴向上固定到具有C形环12的动力活塞8上。