公开(公告)号：US4671167A

公开(公告)日：1987-06-09

申请号：US713029

申请日：1985-03-18

申请人： Mitsuhiro Endo ,  Hiromi Ando ,  Yukou Ono

发明人： Mitsuhiro Endo ,  Hiromi Ando ,  Yukou Ono

IPC分类号： B60T8/18 ,  B60T13/52 ,  B60T13/575 ,  B60T13/577 ,  F15B9/10

CPC分类号： B60T13/577 ,  B60T13/52 ,  B60T13/575 ,  B60T8/1812

摘要： A pneumatic booster including a housing, a power piston partitioning the interior of the housing into a front chamber and a rear chamber, with the front chamber being connected permanently to a source of a first reference pressure, the rear chamber being selectively communicated with the front chamber and a source of second reference pressure which is higher than the first reference pressure through a valve mechanism, an output shaft receiving the output force from the power piston, and an input shaft receiving an input force for actuating said valve mechanism and receiving a reaction force of the output force. There are provided a device between the output shaft and the power piston for changing the reaction force with respect to the output force on the output shaft, a mechanism for rotating the output shaft around the axis thereof, and a device for preventing the rotation of the power piston relative to the housing at least at the non-actuated condition of the pneumatic booster.

摘要翻译： 一种气动升压器，包括壳体，将壳体内部分隔成前室和后室的动力活塞，其中前室永久地连接到第一参考压力源，后室选择性地与前部连通 第二基准压力源通过阀机构高于第一参考压力，输出轴接收来自动力活塞的输出力，以及输入轴，其接收用于致动所述阀机构并接收反作用力的输入力 输出力的力。 在输出轴和动力活塞之间设置有用于相对于输出轴上的输出力改变反作用力的装置，用于使输出轴围绕其轴线旋转的机构，以及用于防止旋转的装置 至少在气动助力器的非致动状态下相对于壳体的动力活塞。

公开(公告)号：US4813336A

公开(公告)日：1989-03-21

申请号：US25279

申请日：1987-03-12

申请人： Mitsuhiro Endo ,  Hiromi Ando ,  Yukou Ono

发明人： Mitsuhiro Endo ,  Hiromi Ando ,  Yukou Ono

IPC分类号： B60T8/18 ,  B60T13/52 ,  B60T13/575 ,  B60T13/577 ,  F15B9/10

CPC分类号： B60T13/577 ,  B60T13/52 ,  B60T13/575 ,  B60T8/1812

摘要： A pneumatic booster including a housing, a power piston partitioning the interior of the housing into a front chamber and a rear chamber, with the front chamber being connected permanently to a source of a first reference pressure, the rear chamber being selectively communicated with the front chamber and a source of second reference pressure which is higher than the first reference pressure through a valve mechanism, an output shaft receiving the output force from the power piston, and an input shaft receiving an input force for actuating said valve mechanism and receiving a reaction force of the output force. There are provided a device between the output shaft and the power piston for changing the reaction force with respect to the output force on the output shaft, a mechanism for rotating the output shaft around the axis thereof, and a device for preventing the rotation of the power piston relative to the housing at least at the non-actuated condition of the pneumatic booster.

公开(公告)号：US4690034A

公开(公告)日：1987-09-01

申请号：US713030

申请日：1985-03-18

申请人： Hiromi Ando ,  Mitsuhiro Endo ,  Yukou Ono

发明人： Hiromi Ando ,  Mitsuhiro Endo ,  Yukou Ono

IPC分类号： B60T13/573 ,  B60T13/575 ,  F15B9/10

CPC分类号： B60T13/575

摘要： A pneumatic booster of the type including a housing, a power piston partitioning the interior of the housing into a constant pressure front chamber and a variable pressure rear chamber, a return spring disposed in the front chamber and biasing the power piston rearwards, a reaction disc mounted on the power piston, an output shaft disposed frontwards of the reaction disc, an input shaft disposed rearwards of the reaction disc, and a valve mechanism associated with the input shaft and controlling the pressure in the rear chamber. A lever is mounted on the front surface of the power piston with radially outer end thereof being biasing against the front surface of the power piston by the return spring and the radially inner end thereof being engageable with the output shaft to transmit at least a part of the output force of the booster from the power piston to the output shaft.

摘要翻译： 一种气动助力器，其类型包括壳体，将壳体内部分隔成恒压前室和可变压力后室的动力活塞，设置在前室中并将动力活塞向后偏置的复位弹簧，反作用盘 安装在动力活塞上，输出轴设置在反作用盘的前方，设置在反作用盘的后方的输入轴以及与输入轴相关联并控制后室中的压力的​​阀机构。 杠杆安装在动力活塞的前表面上，其径向外端通过复位弹簧偏置在动力活塞的前表面上，并且其径向内端可与输出轴接合，以将至少一部分 助力器从动力活塞到输出轴的输出力。

公开(公告)号：US5884548A

公开(公告)日：1999-03-23

申请号：US831143

申请日：1997-04-01

申请人： Hiromi Ando ,  Kiyoshi Shirahata ,  Mitsuhiro Endo ,  Atsuya Koshu

发明人： Hiromi Ando ,  Kiyoshi Shirahata ,  Mitsuhiro Endo ,  Atsuya Koshu

IPC分类号： B60T8/32 ,  B60T13/563 ,  F15B9/10

CPC分类号： B60T13/563 ,  B60T8/3275

摘要： A brake booster includes a housing, a partition adapted to divide the interior of the housing into two chambers, and two diaphragms adapted to divide the two chambers into constant and variable pressure chambers. A control valve includes a valve body carried by the diaphragms, and a plunger slidably received in the valve body. The control valve is operatively connected to the variable pressure chambers to develop a pressure differential across the diaphragms to cause the diaphragms to move in response to actuation of an input rod. A reaction disk is disposed between an output rod and the valve body to transmit the reaction of movement of the output rod to the input rod. An adjusting mechanism is disposed between the plunger and the reaction disk and compressible so as to develop a greater degree of pressure differential when a force applied by the input rod exceeds a predetermined level. The reaction disk is caused to make contact with the contact disk and held out of contact with the spring and the plunger when the plunger is actuated.

摘要翻译： 制动助力器包括壳体，适于将壳体的内部分成两个腔室的隔板以及适于将两个腔室分成恒定和可变压力腔室的两个隔膜。 控制阀包括由隔膜承载的阀体和可滑动地容纳在阀体中的柱塞。 控制阀可操作地连接到可变压力室，以跨越隔膜形成压力差，以响应于输入杆的致动而使隔膜移动。 反作用盘设置在输出杆和阀体之间，以将输出杆的运动反应传递到输入杆。 调节机构设置在柱塞和反作用盘之间并且可压缩，以便当由输入杆施加的力超过预定水平时产生更大程度的压力差。 当活塞被致动时，使反作用盘与接触盘接触并与弹簧和柱塞保持不接触。

公开(公告)号：US5553530A

公开(公告)日：1996-09-10

申请号：US447049

申请日：1995-05-22

申请人： Mitsuhiro Endo ,  Kiyoshi Shirahata ,  Hiromi Ando

发明人： Mitsuhiro Endo ,  Kiyoshi Shirahata ,  Hiromi Ando

IPC分类号： B60T13/52 ,  B60T13/56 ,  B60T13/57

CPC分类号： B60T13/57

摘要： A plunger moved with an input shaft is movably fitted in an axial bore of a valve body made of resin, and a valve mechanism selectively establishes and cuts off communication in a negative pressure passage and an atmosphere passage formed in the valve body according to the movement of the plunger. Also, a pair of radial holes formed to have a circular cross section are provided in the valve body by drilling work, and a plate type stop key formed in a fork shape having two claw branches is mounted by loosely inserting the branches in the radial holes. The stop key limits a movement range of the plunger. Also, a guide portion is formed on an outer circumference of the valve body to guide side surfaces of the stop key. The movement of the stop key is restricted by the guide portion and a step formed in the axial bore of the valve body. Therefore, a smooth operation of the pneumatic booster can be guaranteed.

摘要翻译： 用输入轴移动的柱塞可移动地装配在由树脂制成的阀体的轴向孔中，并且阀机构根据运动选择性地建立和切断在负压通道和形成在阀体中的气氛通道中的连通 的柱塞。 另外，通过钻孔工作在阀体上设置一对形成为圆形横截面的径向孔，并且通过将分支松动地插入到径向孔中来安装形成为具有两个爪分支的叉状的板式止动键 。 停止键限制柱塞的移动范围。 而且，引导部分形成在阀体的外周上，以引导停止键的侧表面。 止动键的移动受到引导部分的限制，并且形成在阀体的轴向孔中的台阶。 因此，可以保证气动助力器的平稳运行。

公开(公告)号：US06269732B1

公开(公告)日：2001-08-07

申请号：US09418510

申请日：1999-10-15

申请人： Hiromi Ando ,  Mitsuhiro Endo ,  Atsuya Koshu

发明人： Hiromi Ando ,  Mitsuhiro Endo ,  Atsuya Koshu

IPC分类号： F15B910

CPC分类号： B60T13/57

摘要： A pneumatic booster includes a valve mechanism for introducing atmospheric air into a variable-pressure chamber in accordance with the movement of a plunger, propelling a power piston due to differential pressure generated between the variable-pressure chamber and a constant-pressure chamber and transmitting force by which the power piston is propelled through a valve body to an output shaft. The valve mechanism includes a poppet valve mechanism including a seal surface capable of abutting against an annular atmospheric valve seat formed in the plunger and a seal surface capable of abutting against an annular negative pressure valve seat formed on an inner surface of the valve body. The annular atmospheric valve seat of the plunger is located in a position forward in a direction of propelling of the power piston relative to the negative pressure valve seat and is substantially aligned with the negative pressure valve seat in an axial direction. The poppet valve mechanism has a main poppet valve including the seal surface capable of abutting against the negative pressure valve seat and a sub poppet valve including the seal surface capable of abutting against the atmospheric valve seat. The seal surface of the sub poppet valve is spaced apart in the axial direction from the seal surface of the main poppet valve.

摘要翻译： 气动助力器包括一个阀机构，用于根据柱塞的运动将大气引入可变压力室，由于可变压力室和恒压室之间产生的差压而推动动力活塞，并且传递力 动力活塞通过阀体推动到输出轴。 阀机构包括提升阀机构，该提升阀机构包括能够抵靠形成在柱塞中的环形大气阀座的密封表面和能够抵靠形成在阀体内表面上的环形负压阀座的密封表面。 柱塞的环形大气阀座位于动力活塞相对于负压阀座的推进方向上的前方位置，并且在轴向方向上基本上与负压阀座对准。 提升阀机构具有主提升阀，其包括能够抵靠负压阀座的密封面和包括能够抵靠大气阀座的密封面的副提升阀。 副提升阀的密封面在与主提升阀的密封面的轴向隔开。

公开(公告)号：US5743167A

公开(公告)日：1998-04-28

申请号：US715894

申请日：1996-09-19

申请人： Shuzo Watanabe ,  Mitsuhiro Endo ,  Hiromi Ando

发明人： Shuzo Watanabe ,  Mitsuhiro Endo ,  Hiromi Ando

IPC分类号： B60T13/563 ,  B60T13/567 ,  B60T13/569 ,  F01B19/00 ,  F15B11/00

CPC分类号： B60T13/567 ,  B60T13/563 ,  B60T13/569

摘要： A tandem pneumatic booster having a shell body, the inside of which is divided into two, front and rear, chambers by a center shell. Each chamber includes a negative pressure chamber and a working pressure chamber. A valve body is slidably fitted in the shell body and the center shell with seal members therebetween. The valve body is provided with an air passage for communication between the front and rear working pressure chambers. A valve mechanism is actuated in association with an input shaft to introduce atmospheric air into the front and rear working pressure chambers through the air passage so as to apply thrust to front and rear power pistons. The diaphragm of the front power piston has a bead on an inner periphery thereof. The valve body has a groove on an outer periphery thereof. A portion of the air passage which leads to the front working pressure chamber has a main passage portion extending axially in the valve body, and a bypass extending radially outward from the main passage portion. A communicating port leading to the front working pressure chamber extends axially from the bypass. The bypass opens into the groove, and the radially outer end of the bypass is sealed with the bead.

摘要翻译： 一种串联式气动助力器，其具有壳体，其壳体通过中心壳体分成两个，前后腔。 每个室包括负压室和工作压力室。 阀体可滑动地装配在壳体和中心壳体之间，其间具有密封构件。 阀体设置有用于在前后工作压力室之间连通的空气通道。 阀门机构与输入轴相关联地致动，以将空气通过空气通道引入前后工作压力室，从而将推力施加到前后动力活塞。 前功率活塞的隔膜在其内周上具有凸缘。 阀体的外周具有槽。 通向前工作压力室的空气通道的一部分具有在阀体中轴向延伸的主通道部分和从主通道部分径向向外延伸的旁路。 通向前工作压力室的连通口从旁路轴向延伸。 旁路通向槽中，旁路的径向外端用珠密封。

公开(公告)号：US5115719A

公开(公告)日：1992-05-26

申请号：US671966

申请日：1991-03-18

申请人： Mitsuhiro Endo

发明人： Mitsuhiro Endo

IPC分类号： B60T13/56 ,  B60T13/563

CPC分类号： B60T13/563

摘要： A pneumatic booster for use, for example, in a brake system of a vehicle, and designed so that the overall axial length is reduced without interfering with the operation thereof. The booster comprises a valve body which is movable back and forth between first and second positions in a housing that is divided by a diaphragm with a power piston into front and rear chambers communicated with respective pressure sources, a valve which allows at least one of the front and rear chambers to selectively communicate with the pressure sources which differ from each other in the level of pressure, and a guide which slidably fits on the outer periphery of the valve body. The valve body has a passage one end of which opens on the outer periphery thereof to connect one of the front and rear chambers to the associated pressure source, the opening of the passage being positioned in the axial direction of the valve body so that the guide overlaps the opening when the valve body is at either the first or second position. The guide has a guide member and a seal member. The guide member has a plurality of axial grooves provided in the inner periphery thereof at predetermined spacings in the circumferential direction so that the passage communicates with the one chamber through the grooves when the valve body is at either the first or second position where the guide overlaps the opening.

摘要翻译： 一种用于例如在车辆的制动系统中使用的气动助力器，并被设计成使得整个轴向长度减小而不干扰其操作。 增压器包括阀体，该阀体在壳体中的第一和第二位置之间来回移动，该壳体由具有动力活塞的隔膜分隔成与相应压力源连通的前室和后室;阀，其允许至少一个 前室和后室，以与压力水平彼此不同的压力源选择性地连通，以及可滑动地配合在阀体的外周上的引导件。 阀体的通道一端在其外周开口，将前后室中的一个连接到相关联的压力源，通道的开口沿阀体的轴向定位，使得导向件 当阀体处于第一或第二位置时与开口重叠。 引导件具有引导构件和密封构件。 引导构件具有多个轴向槽，其沿圆周方向以预定的间隔设置在其内周中，使得当阀体处于导向件重叠的第一或第二位置时，通道通过槽与一个室连通 开幕。

公开(公告)号：US5058486A

公开(公告)日：1991-10-22

申请号：US553958

申请日：1990-07-18

申请人： Mitsuhiro Endo

发明人： Mitsuhiro Endo

IPC分类号： B60T13/56 ,  B60T13/567 ,  B60T13/569

CPC分类号： B60T13/569 ,  B60T13/567

摘要： A pneumatic booster has a housing which includes a forward shell and a rearward shell, and a diaphragm which is installed inside the housing and secured at the outer peripheral portion thereof to the housing. The diaphragm has a bead formed on the outer peripheral portion thereof. The rearward shell has a bead retaining portion which has a bead retaining groove that opens radially outward. The forward shell has an outer peripheral portion. The bead is received into the bead retaining groove across one edge portion of the bead retaining groove and clamped between the groove and the outer peripheral portion of the forward shell. The dimensions of the bead and the bead retaining portion are set so that the inner diameter of the bead is greater than the outer diameter of the edge portion of the bead retaining groove. Thus, the rearward shell and the diaphragm can be assembled together without the need to bend the diaphragm in advance, and the assembly process is correspondingly facilitated.

摘要翻译： 气动升压器具有壳体，其包括前壳体和后壳体，以及隔膜，其安装在壳体的内部并固定在壳体的外周部分。 隔膜具有形成在其外周部上的胎圈。 后壳具有胎圈保持部，该胎圈保持部具有向径向外侧开口的胎圈保持槽。 前壳具有外周部。 胎圈通过胎圈保持槽的一个边缘部分被容纳在胎圈保持槽中，并且夹在槽和外壳的外围周边部分之间。 珠和胎圈保持部的尺寸被设定为使得胎圈的内径大于胎圈保持槽的边缘部的外径。 因此，后壳和隔膜可以组装在一起，而不需要预先弯曲隔膜，并且组装过程相应地便利。

公开(公告)号：US4884491A

公开(公告)日：1989-12-05

申请号：US181425

申请日：1988-04-14

申请人： Mitsuhiro Endo

发明人： Mitsuhiro Endo

IPC分类号： B60T13/57

CPC分类号： B60T13/57

摘要： A pneumatic booster includes a casing, a diaphragm secured to the casing to partition the inside of the casing into a front chamber which is communicated with a negative-pressure source and a rear chamber, a valve body secured to the inner peripheral portion of the diaphragm, a vacuum valve provided in the valve body to allow the front and rear chambers to be selectively communicated with and cut off from each other, an atmospheric valve provided in the valve body to allow the rear chamber to be selectively communicated with and cut off from the atmosphere, an input rod for actuating the vacuum and atmospheric valves, and an output rod adapted to receive the force of displacement of the diaphragm. The atmospheric valve is composed of first and second valve portions provided in series along a communicating passage between the rear chamber and the atmosphere. The first and second valve portions are closed successively in the mentioned order when the atmospheric valve is closed. The booster further includes orifices for providing communication between the rear chamber and the atmosphere during the period of time from the instant the first valve portion is closed until the second valve portion is closed. Thus, it is possible to give a driver a feeling of stable and favorable braking at all times and also to improve the durability of the booster.

摘要翻译： 气动助力器包括壳体，固定到壳体的隔膜，以将壳体的内部分隔成与负压源和后室连通的前室;固定到隔膜的内周部分的阀体 设置在阀体中的真空阀，以允许前室和后室彼此选择性地连通和切断，设置在阀体中的大气阀，以允许后室选择性地连通和切断 气氛，用于致动真空和大气阀的输入杆，以及适于接收隔膜位移力的输出杆。 大气阀由沿着后室和大气之间的连通通道串联设置的第一和第二阀部分组成。 当大气阀关闭时，第一和第二阀部分按照上述顺序依次关闭。 助推器还包括用于在从第一阀部分关闭到第二阀部分关闭之后的时间段期间在后室和大气之间提供连通的孔。 因此，可以始终给驾驶员一个稳定和良好制动的感觉，并且还可以提高助力器的耐久性。