公开(公告)号：US20040124698A1

公开(公告)日：2004-07-01

申请号：US10733334

申请日：2003-12-12

Applicant: ADVICS CO., LTD.

Inventor： Nobuyuki Nakashima ,  Atsushi Yasuda

IPC: B60T013/18

CPC classification number: B60T8/4081 ,  B60T8/38 ,  B60T13/142 ,  B60T13/18 ,  B60T13/686

Abstract: A hydraulic brake apparatus includes a brake master cylinder having a rod piston moving in response to a brake pedal; a separation valve provided in a hydraulic brake circuit in order to establish and shut off communication between the brake master cylinder and the brake wheel cylinders; a pressure control valve unit for controlling fluid pressure to be supplied from an external fluid-pressure supply source to the brake wheel cylinders while the separation valve is in a shutoff condition; and a stroke simulator mechanism for allowing an idle stroke of the rod piston so as to ensure a stroke of the brake pedal in accordance with an input load to the brake pedal. An orifice is provided in a passage which establishes, during the idle stroke of the rod piston, communication between a pressure chamber and an atmospheric pressure chamber which are defined within the brake master cylinder by means of the rod piston.

Abstract translation: 液压制动装置包括制动主缸，其具有响应于制动踏板而移动的杆式活塞; 设置在液压制动回路中的分离阀，以便建立和切断制动主缸和制动轮缸之间的连通; 压力控制阀单元，用于在分离阀处于关闭状态的同时，控制从外部流体压力供给源向制动轮缸供给的流体压力; 以及行程模拟器机构，用于允许杆活塞的空转行程，以便根据对制动踏板的输入负载来确保制动踏板的行程。 在通道中设置有孔，该通道在杆活塞的空转行程期间通过杆活塞在制动主缸内限定的压力室和大气压力室之间建立连通。

公开(公告)号：US20040123593A1

公开(公告)日：2004-07-01

申请号：US10733333

申请日：2003-12-12

Applicant: ADVICS CO., LTD.

Inventor： Nobuyuki Nakashima ,  Atsushi Yasuda

IPC: F16D031/02

CPC classification number: B60T8/4081 ,  B60T8/38 ,  B60T13/142

Abstract: A hydraulic brake apparatus includes a tandem brake master cylinder having a rod piston moving in response to a brake pedal, and a floating piston moving in response to the rod piston; a separation valve provided in a hydraulic brake circuit connecting the brake master cylinder and brake wheel cylinders in order to establish and shut off communication between the brake master cylinder and the brake wheel cylinders; a pressure control valve unit for controlling fluid pressure to be supplied from an external fluid-pressure supply source to the brake wheel cylinders while the separation valve is in a shutoff condition; and a stroke simulator mechanism for allowing an idle stroke of the rod piston and an idle stroke of the floating piston while the separation valve is in the shutoff condition. The idle stroke of the floating piston starts during the idle stroke of the rod piston.

Abstract translation: 液压制动装置包括串联制动主缸，其具有响应于制动踏板而移动的杆式活塞和响应于杆式活塞而移动的浮动活塞; 分离阀，设置在连接制动主缸和制动轮缸的液压制动回路中，以便建立和切断制动主缸和制动轮缸之间的连通; 压力控制阀单元，用于在分离阀处于关闭状态的同时，控制从外部流体压力供给源向制动轮缸供给的流体压力; 以及行程模拟器机构，用于在分离阀处于关闭状态的同时允许杆活塞的空转行程和浮动活塞的空转行程。 在活塞的空转行程期间，浮动活塞的空转行程开始。

公开(公告)号：US20040000813A1

公开(公告)日：2004-01-01

申请号：US10441220

申请日：2003-05-20

Applicant: ADVICS CO., LTD.

Inventor： Katsuhiro Mita ,  Atsushi Yasuda

IPC: B60T008/44

CPC classification number: B60T11/16 ,  B60T13/565

Abstract: Disclosed is a master cylinder wherein a seal member is given plural seal functions to reduce the number of seal members for partitioning a drain portion of the master cylinder, a constant-pressure chamber of a booster and the atmosphere from one another, so that the master cylinder is simplified in construction and reduced in manufacturing cost. When a piston is operated by an output shaft of the booster attached to a booster mounting surface of a cylinder body, the operating fluid from the fluid pressure chamber partitioned by a fluid-tight seal member is supplied to a brake system. An annular complex seal member is fit in an internal seal stepped portion which is formed by radially expanding an opening portion of the cylinder which opens to a booster mounting surface. A slide seal portion of the complex seal member partitions a drain portion behind the fluid-tight seal member from the constant-pressure chamber of the booster through sliding contact with the piston. An air-tight seal portion of the complex seal member partitions the constant-pressure chamber from the atmosphere through abutting engagement with the front end surface of the booster. Further, a fixed seal portion of the complex seal member partitions the drain portion from the atmosphere through abutting engagement with the internal surface of an internal seal stepped portion.

Abstract translation: 公开了一种主缸，其中密封构件具有多个密封功能，以减少用于分隔主缸的排水部分的密封构件的数量，增压器的恒压室和彼此的气氛，使得主缸 气缸的结构简化，制造成本降低。 当活塞由连接在气缸本体的增压器安装面上的增压器的输出轴进行动作时，由流体密封构件分隔的流体压力室的工作流体供给制动系统。 环形复合密封构件配合在通过径向扩大开放到增压器安装表面的气缸的开口部分形成的内部密封阶梯部分中。 复合密封构件的滑动密封部分通过与活塞的滑动接触将流体密封构件后面的排水部分与助力器的恒压室隔开。 复合密封构件的气密密封部分通过与增压器的前端表面的抵靠接合将恒压室与大气隔开。 此外，复合密封构件的固定密封部分通过与内部密封阶梯部分的内表面的抵接接合而将排水部分与大气分隔开。