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。

公开(公告)号：US20040148930A1

公开(公告)日：2004-08-05

申请号：US10759255

申请日：2004-01-20

Applicant: ADVICS CO., LTD.

Inventor： Katsuhiro Mita ,  Tomoo Ogura

IPC: B60T013/00

CPC classification number: B60T11/20 ,  B60T11/16 ,  B60T11/18 ,  B60T13/52

Abstract: A master cylinder device connected with a brake booster device of an input rod pulling type is disclosed. In the brake booster device, the interior of a brake booster is partitioned by a diaphragm with a piston secured thereto, into a constant pressure chamber and a variable pressure chamber. The piston incorporates therein a valve mechanism operated by a brake pedal for making the variable pressure chamber communicate selectively with the atmosphere and the constant pressure chamber. The brake booster device transmits the axial movement of the diaphragm generated based on the pressure difference between the both chambers, from the piston through a reaction mechanism to an output rod. The output rod pulls a piston rod of a master cylinder rearward for making the master cylinder generate a braking pressure. The output rod extends as the piston rod in the master cylinder of the master cylinder device, and a master piston is mounted on the forward end portion of the piston rod so that it is floatable relative to the piston rod, but is restrained from being moved forward relative to the piston rod in the axial direction of the same. Thus, the master piston can be prevented from scraping against the master cylinder.

Abstract translation: 公开了一种与输入拉杆式制动助力装置连接的主缸装置。 在制动助力装置中，制动助力器的内部由固定有活塞的隔膜分隔成恒压室和可变压力室。 活塞内装有由制动踏板操作的阀机构，用于使可变压力室与大气和恒压室选择性地连通。 制动助力装置将基于两个室之间的压力差产生的隔膜的轴向运动从活塞通过反作用机构传递到输出杆。 输出杆向后拉动主缸的活塞杆，使主缸产生制动压力。 输出杆作为主缸装置的主缸中的活塞杆延伸，并且主活塞安装在活塞杆的前端部分上，使得其相对于活塞杆可浮动，但被限制移动 向前相对于活塞杆的轴向方向。 因此，可以防止主活塞刮擦主缸。

公开(公告)号：US20040182238A1

公开(公告)日：2004-09-23

申请号：US10765890

申请日：2004-01-29

Applicant: ADVICS CO., LTD.

Inventor： Katsuhiro Mita

IPC: F16J009/00

CPC classification number: F16J15/3236 ,  B60T11/18 ,  B60T11/20 ,  B60T13/52 ,  B60T13/565 ,  B60T13/57

Abstract: A sealing structure is provided with a seal member for sealing a double fitting portion where an annular member is fit in the internal surface of an outer member at its outer circumferential surface and is also fit on the outer circumferential surface of an inner member at its internal surface. In the sealing structure, the seal member is attached to an end surface of the annular member with an annular groove on its back surface being fit on an annular projection axially protruding from an end surface of the annular member at a radially mid position. At its forward end surface, the seal member is provided with annular outer and inner lips which are axially protruded for respective contacts with the internal surface of the outer member and the outer circumferential surface of the inner member, and is further provided an annular separation zone between the annular outer and inner lips. In a preferred application, the sealing structure is incorporated in a combination of a master cylinder device and a brake booster device having a pull type input rod, wherein first and second master pistons are slidably inserted in a master cylinder of a cylinder body with a piston rod passing through the second master piston to be connected to the first master piston. In this case, the outer member, the annular member and the inner member in the sealing structure are replaced respectively by the cylinder body, the second master piston and the piston rod in the combination, and the seal member of the searing structure operates to seal the clearance between the internal surface of the master cylinder and the outer circumferential surface of the second master piston and the clearance between the internal surface of the second master piston and the outer circumferential surface of the piston rod.

Abstract translation: 密封结构设置有用于密封双配合部分的密封构件，其中环形构件在其外周面处装配在外构件的内表面中并且还装配在内构件的内周面的外周面上 表面。 在密封结构中，密封构件附接到环形构件的端面，其后表面上的环形凹槽配合在径向中间位置处从环形构件的端面轴向突出的环形突起上。 在其前端面上，密封部件设置有环状的外唇和内唇，该外唇和内唇与所述外构件的内表面和内构件的外周表面相互接触地轴向突出，并且还设置有环形分隔区 在环形外唇和内唇之间。 在优选的应用中，密封结构结合在主缸装置和具有拉式输入杆的制动助力装置的组合中，其中第一和第二主活塞可滑动地插入到具有活塞的缸体的主缸中 杆穿过第二主活塞以连接到第一主活塞。 在这种情况下，密封结构中的外部构件，环形构件和内部构件分别由缸体，第二主活塞和活塞杆组合地替换，并且密封构件的密封构件用于密封 主缸的内表面与第二主活塞的外圆周表面之间的间隙以及第二主活塞的内表面与活塞杆的外周表面之间的间隙。

公开(公告)号：US20040144090A1

公开(公告)日：2004-07-29

申请号：US10703439

申请日：2003-11-10

Applicant: ADVICS CO., LTD.

Inventor： Tomoo Ogura ,  Katsuhiro Mita

IPC: B60T013/00

CPC classification number: B60T13/565

Abstract: A master cylinder apparatus is provided with a master cylinder and a booster. The booster comprises a booster shell whose interior is divided into a variable-pressure chamber and a constant-pressure chamber, a control valve to regulate the communication of the variable-pressure chamber with the constant-pressure chamber and the atmosphere. The master cylinder comprises a cylinder body provided with a cylinder and a master piston inserted in the cylinder. The cylinder body formed with an installation flange to which the booster shell is attached at the same end that the cylinder opens. Pull means connected to a brake pedal at one end and to the control valve at the other end. The installation flange is attached to a dashboard, so that the booster shell is disposed in one of a passenger room and an engine room and the cylinder body protrudes into the other room. When the brake pedal is stepped on, the pull means makes the control valve operate to communicate the atmosphere to the variable-pressure chamber, whereby the booster augments the stepping force exerted on the brake pedal. The master piston is moved by the output member of the booster to generate a fluid pressure in the master cylinder that is delivered to wheel cylinders. In this manner, the installation flange of the cylinder body is attached to a dashboard, so that the booster shell is disposed in one of a passenger room and an engine room and the cylinder body protrudes into the other room, whereby the flexibility in mounting the master cylinder apparatus with the booster on the vehicle can be increased tremendously. Moreover, as the stepping force exerted on the brake pedal is supported by the installation flange attached to the dashboard and does not act on the booster, the thickness of the booster shell can be made thin without deformation and vibration thereof.

Abstract translation: 主缸装置设有主缸和增压器。 助力器包括内部被分为可变压力室和恒压室的增压器壳体，用于调节可变压力室与恒压室和气氛的连通的控制阀。 主缸包括设置有气缸的缸体和插入气缸中的主活塞。 气缸体形成有安装凸缘，增压器外壳在气缸打开的同一端附接到该安装凸缘。 牵引装置在一端连接到制动踏板，另一端连接到控制阀。 安装法兰连接在仪表板上，使助力器壳体设置在乘客室和发动机室中的一个中，气缸体突出到另一个房间中。 当制动踏板踩踏时，拉动装置使控制阀操作以将大气传递到可变压力室，由此增压器增加施加在制动踏板上的踏力。 主活塞由助力器的输出构件移动，以在主缸中产生传递到轮缸的流体压力。 以这种方式，将缸体的安装法兰安装在仪表板上，从而将助力器壳体设置在乘客室和发动机室中的一个中，并且缸体突出到另一个房间中，由此安装 带有助推器的主缸装置可以大大增加。 此外，由于施加在制动踏板上的步进力由安装在仪表板上的安装法兰支撑并且不作用在助力器上，所以助力器外壳的厚度可以变薄而没有变形和振动。