公开(公告)号：US4069899A

公开(公告)日：1978-01-24

申请号：US713385

申请日：1976-08-11

申请人： Cletus McLane

发明人： Cletus McLane

IPC分类号： F16D55/00 ,  F16D55/32 ,  F16D65/14 ,  F16D65/18 ,  F16D55/224 ,  B60T13/60

CPC分类号： F16D65/18 ,  F16D55/32 ,  F16D65/186 ,  F16D2055/0058 ,  F16D2121/02 ,  F16D2125/587

摘要： A vehicle brake having a vacuum suspended operating section. The assembly is arranged so that initial braking is accomplished by the operator admitting atmospheric pressure to the pressure side of a diaphragm that has a vacuum on its opposing side. The assembly is further arranged so that the wheel cylinder can be used to convert hydraulic pressure to air pressure. When the vehicle operator first applies a force to the brake pedal, a valve is actuated which allows vacuum and atmospheric pressure to impart sufficient force to provide initial braking. When greater brake pressures are required as indicated by increased brake pedal force exerted by the vehicle operator, a valve leading to atmospheric pressure closes, allowing the hydraulic pressure in the wheel cylinder to convert the trapped atmospheric pressure to air pressure. As this pressure is inner connected to the large diaphragm area, sufficient force is exerted on the brake lining to provide the required brake torque, without any increase in the pressure supplied to the wheel cylinder above that supplied to the master cylinder by the vehicle operator.

摘要翻译： 具有真空悬挂操作部分的车辆制动器。 组件被布置成使得初始制动通过操作者承认大气压力到在其相对侧具有真空的隔膜的压力侧来实现。 组件还被布置成使得轮缸可以用于将液压转换成空气压力。 当车辆操作者首先向制动踏板施加力时，启动阀，其允许真空和大气压赋予足够的力以提供初始制动。 当需要较大的制动压力，如由车辆操作者施加的制动踏板力增加所示，通向大气压力的阀门关闭，允许轮缸中的液压压力将被捕获的大气压力转换成空气压力。 由于该压力内部连接到大的隔膜区域，所以在制动衬片上施加足够的力以提供所需的制动扭矩，而不会由车辆操作者提供给主缸的上方的压力提高。