公开(公告)号：US5960630A

公开(公告)日：1999-10-05

申请号：US864346

申请日：1997-05-28

申请人： Michiharu Nishii ,  Satoshi Ishida ,  Masahiko Kato

发明人： Michiharu Nishii ,  Satoshi Ishida ,  Masahiko Kato

IPC分类号： B60T13/12 ,  B60T8/44 ,  B60T13/14 ,  B60T11/20

CPC分类号： B60T8/441 ,  B60T13/147

摘要： The invention is directed to a hydraulic brake apparatus which includes a master cylinder having a cylinder body and a master piston slidably disposed therein for defining a pressure chamber ahead of the master piston and a power chamber behind the master piston. A control piston is slidably disposed in the cylinder body ahead of the master piston to define the pressure chamber behind the control piston, and adapted to be moved in response to movement of the master piston. An auxiliary pressure source is provided for pressurizing brake fluid to generate a power pressure, and a valve assembly is communicated with the auxiliary pressure source to regulate the power pressure into a regulated pressure in response to movement of the control piston. The valve assembly is adapted to supply the regulated pressure into the power chamber to assist the operation of a brake pedal. The control piston is provided with at least one sealing member to separate the regulator chamber from the pressure chamber with substantially equal pressure applied to one end of the sealing member and the other end of the sealing member.

摘要翻译： 本发明涉及一种液压制动装置，该液压制动装置包括主缸，该主缸具有可滑动地设置在其中的缸体和主活塞，用于限定主活塞前方的压力室和主活塞后面的动力室。 控制活塞可滑动地设置在主活塞前方的缸体中以限定控制活塞后面的压力室，并且适于响应于主活塞的移动而移动。 提供辅助压力源用于对制动液进行加压以产生动力压力，并且阀组件与辅助压力源连通，以响应于控制活塞的运动将功率压力调节到调节压力。 阀组件适于将调节的压力供应到动力室中以辅助制动踏板的操作。 控制活塞设置有至少一个密封构件，以将调节器室与压力室分离，施加到密封构件的一端和密封构件的另一端的基本上相等的压力。

公开(公告)号：US5927074A

公开(公告)日：1999-07-27

申请号：US865106

申请日：1997-05-29

申请人： Michiharu Nishii ,  Satoshi Ishida ,  Masahiko Kato

发明人： Michiharu Nishii ,  Satoshi Ishida ,  Masahiko Kato

IPC分类号： B60T13/12 ,  B60T8/44 ,  B60T13/14 ,  F16B7/00

CPC分类号： B60T8/441 ,  B60T13/147

摘要： The invention is directed to a hydraulic brake apparatus which includes a master cylinder having a cylinder body and a master piston slidably disposed therein for defining a pressure chamber ahead of the master cylinder and a power chamber behind the master piston. A control piston is slidably disposed in the cylinder body ahead of the master piston to define the pressure chamber behind the control piston, and adapted to be moved in response to movement of the master piston. An auxiliary pressure source is provided for pressurizing brake fluid to generate a power pressure. A valve assembly having a regulator chamber defined ahead of the control piston is communicated with the auxiliary pressure source to regulate the power pressure into a regulated pressure in response to movement of the control piston, and adapted to supply the regulated pressure into the power chamber to assist the operation of the manually operated member. The valve assembly includes a valve seat disposed ahead of the control piston, and a control valve disposed ahead of the valve seat. An adjusting device is disposed ahead of the control valve, and engaged with a front end of the control valve to urge the control valve to be seated on the valve seat when the regulated pressure exceeds a predetermined pressure. And, a space defined between the adjusting device and the front end of the control valve is communicated with the reservoir.

摘要翻译： 本发明涉及一种液压制动装置，该液压制动装置包括主缸，该主缸具有缸主体和可滑动地设置在其中的主活塞，用于限定主缸前面的压力室和主活塞后面的动力室。 控制活塞可滑动地设置在主活塞前方的缸体中以限定控制活塞后面的压力室，并且适于响应于主活塞的移动而移动。 提供辅助压力源用于对制动液加压以产生动力压力。 具有在控制活塞前方限定的调节器室的阀组件与辅助压力源连通，以响应于控制活塞的移动将功率压力调节到调节压力中，并且适于将调节压力供应到动力室中 辅助手动操作的构件的操作。 阀组件包括设置在控制活塞前方的阀座和设置在阀座前面的控制阀。 调节装置设置在控制阀前方，并且当调节压力超过预定压力时，与控制阀的前端接合，以迫使控制阀就座于阀座上。 并且，在调节装置和控制阀的前端之间限定的空间与储存器连通。

公开(公告)号：US5924530A

公开(公告)日：1999-07-20

申请号：US866242

申请日：1997-05-30

申请人： Michiharu Nishii ,  Satoshi Ishida ,  Masahiko Kato

发明人： Michiharu Nishii ,  Satoshi Ishida ,  Masahiko Kato

IPC分类号： B60T13/12 ,  B60T8/44 ,  B60T13/128 ,  B60T13/14 ,  B60T11/00

CPC分类号： B60T13/147 ,  B60T8/441

摘要： The invention is directed to a hydraulic brake apparatus which includes a master cylinder having a cylinder body and a master piston slidably disposed therein for defining a pressure chamber ahead of the master piston and a power chamber behind the master piston. A control piston is slidably disposed in the cylinder body ahead of the master piston for defining the pressure chamber behind the control piston. The control piston is moved in response to movement of the master piston. An auxiliary pressure source is provided for pressurizing brake fluid to generate a power pressure. A valve assembly is communicated with the auxiliary pressure source to regulate the power pressure into a regulated pressure in response to movement of the control piston, and adapted to supply the regulated pressure into the power chamber to assist the operation of a brake pedal. And, a pressure decreasing device which is activated in response to operation of the brake pedal is provided for decreasing the pressure in the power chamber irrespective of the pressure in the pressure chamber when the brake pedal is released. For example, the pressure decreasing device is disposed in the master piston for communicating the power chamber with the reservoir or blocking the communication between the power chamber and the reservoir in accordance with a position of the master piston in the cylinder body.

摘要翻译： 本发明涉及一种液压制动装置，该液压制动装置包括主缸，该主缸具有可滑动地设置在其中的缸体和主活塞，用于限定主活塞前方的压力室和主活塞后面的动力室。 控制活塞可滑动地设置在主活塞前方的缸体中，用于限定控制活塞后面的压力室。 控制活塞响应于主活塞的移动而移动。 提供辅助压力源用于对制动液加压以产生动力压力。 阀组件与辅助压力源连通，以响应于控制活塞的运动将功率压力调节到调节压力，并且适于将调节的压力供应到动力室中以帮助制动踏板的操作。 并且，提供响应于制动踏板的操作被激活的减压装置，用于在制动踏板被释放时与压力室中的压力无关地降低动力室中的压力。 例如，减压装置设置在主活塞中，用于将动力室与储存器连通，或者根据主活塞在缸体中的位置阻塞动力室和储存器之间的连通。

公开(公告)号：US4986613A

公开(公告)日：1991-01-22

申请号：US386274

申请日：1989-07-28

申请人： Michiharu Nishii ,  Genji Mizuno ,  Yoshihisa Nomura ,  Masahiko Kato ,  Kenji Shirai ,  Junichi Tanoue

发明人： Michiharu Nishii ,  Genji Mizuno ,  Yoshihisa Nomura ,  Masahiko Kato ,  Kenji Shirai ,  Junichi Tanoue

IPC分类号： B60T13/12 ,  B60T8/44 ,  B60T13/14

CPC分类号： B60T13/146 ,  B60T8/441

摘要： A hydraulic braking system for an automotive vehicle having a power source for generating a hydraulic power pressure, a reservoir, a master cylinder, a hydraulic booster for actuating the master cylinder in response to depression of a brake pedal and a plurality of wheel brake cylinders for braking respective road wheels, which are divided into a first group of wheel brake cylinders communicating with the master cylinder and a second group of wheel brake cylinders communicating with the hydraulic booster. An auxiliary cylinder is disposed between the master cylinder and the first group of wheel brake cylinders to which a hydraulic braking pressure from the master cylinder is directly applied in its inoperative condition, and it increases the hydraulic braking pressure in response to depression of the brake pedal in its operative condition which is made when the hydraulic power pressure, for example, is less than the hydraulic braking pressure by a predetermined difference. Control structure is connected to the auxiliary cylinder and allows the auxiliary cylinder in its operative condition when the hydraulic braking pressure, for example, is less than a predetermined value.

公开(公告)号：US5899068A

公开(公告)日：1999-05-04

申请号：US866296

申请日：1997-05-30

申请人： Michiharu Nishii ,  Takashi Kurokawa ,  Masahiko Kato

发明人： Michiharu Nishii ,  Takashi Kurokawa ,  Masahiko Kato

IPC分类号： B60T13/12 ,  B60T8/44 ,  B60T13/128 ,  B60T13/14 ,  B60T11/20

CPC分类号： B60T8/441 ,  B60T13/147

摘要： The invention is directed to a hydraulic brake apparatus which includes a master cylinder having a cylinder body and a master piston slidably disposed therein for defining a pressure chamber ahead of the master piston and a power chamber behind the master piston. The master piston includes a first piston connected to a brake pedal and a second piston slidably disposed relative to the first piston. The rear ends of the first piston and second piston are exposed to the power chamber, and the front ends of the first piston and second piston are exposed to the pressure chamber. An engaging member is provided for engaging the second piston with the first piston upon forward movement of the second piston. A control piston is slidably disposed in the cylinder body ahead of the master piston to define the pressure chamber behind the control piston. An auxiliary pressure source is provided for pressurizing brake fluid to generate a power pressure, and a valve assembly is communicated with the auxiliary pressure source to regulate the power pressure into a regulated pressure in response to movement of the control piston. The valve assembly is adapted to supply the regulated pressure into the power chamber to assist the operation of the manually operated member.

摘要翻译： 本发明涉及一种液压制动装置，该液压制动装置包括主缸，该主缸具有可滑动地设置在其中的缸体和主活塞，用于限定主活塞前方的压力室和主活塞后面的动力室。 主活塞包括连接到制动踏板的第一活塞和相对于第一活塞可滑动地设置的第二活塞。 第一活塞和第二活塞的后端暴露于动力室，第一活塞和第二活塞的前端暴露于压力室。 提供接合构件，用于在第二活塞向前运动时将第二活塞与第一活塞接合。 控制活塞可滑动地设置在主活塞前方的缸体中以限定控制活塞后面的压力室。 提供辅助压力源用于对制动液进行加压以产生动力压力，并且阀组件与辅助压力源连通，以响应于控制活塞的运动将功率压力调节到调节压力。 阀组件适于将调节的压力供应到动力室中以辅助手动操作的构件的操作。

公开(公告)号：US5027599A

公开(公告)日：1991-07-02

申请号：US259744

申请日：1988-10-19

申请人： Michiharu Nishii ,  Genji Mizuno ,  Ysohihiko Tada ,  Yoshihisa Nomura ,  Masahiko Kato ,  Kenji Shirai ,  Junichi Tanoue

发明人： Michiharu Nishii ,  Genji Mizuno ,  Ysohihiko Tada ,  Yoshihisa Nomura ,  Masahiko Kato ,  Kenji Shirai ,  Junichi Tanoue

IPC分类号： B60T8/44 ,  B60T8/94 ,  B60T13/14

CPC分类号： B60T8/94 ,  B60T13/146 ,  B60T8/441

摘要： A hydraulic braking system includes a tandem master cylinder having a bore with an opening and a closed wall at opposite ends thereof which formed in a housing, a first piston slidably fitted in the bore so as to define a first pressure chamber and a first fluid chamber therein and operatively connected to a brake pedal, a second piston slidably fitted in the bore so as to define a second fluid chamber adjacent to the first pressure chamber and a second pressure chamber and operatively connected to the first piston. A normally open valve communicates with each piston so as to close passages formed in the each pistons and communication between each fluid chambers and each pressure chambers, respectively, when each piston is moved in response to the depression of the brake pedal. A power source generates a hydraulic power pressure. A dynamic hydraulic braking pressure generator generates the hydraulic power pressure supplied from the power source in response to depression of the brake pedal and outputs to the second fluid chamber. A plurality of wheel cylinders for braking respective road wheels are divided into a first group of wheel brake cylinders communicated with the first pressure chamber through one of dual hydraulic circuits and a second group of wheel brake cylinders communicate with the second pressure chamber through an another of the dual hydraulic circuits. A restrictor restricts the sliding distance of the second piston toward the first piston to at least a predetermined distance for closing the valve means. Due to such construction, the first stage idle stroke of the tandem master cylinder is shortened and the stroke of the brake pedal is shortened.

摘要翻译： 液压制动系统包括串联主缸，其具有开口的孔和形成在壳体中的相对端的封闭壁，第一活塞可滑动地装配在孔中，以便限定第一压力室和第一流体室 其中并且可操作地连接到制动踏板，第二活塞可滑动地装配在所述孔中，以便限定与所述第一压力室相邻的第二流体室以及可操作地连接到所述第一活塞的第二压力室。 当每个活塞响应于制动踏板的下压而移动时，常开阀与每个活塞相通，以分别闭合在每个活塞中形成的通道，并分别在每个流体室与每个压力室之间连通。 电源产生液压动力压力。 动态液压制动压力发生器响应于制动踏板的下压而产生从动力源供应的液压动力压力并将其输出到第二流体室。 用于制动各个车轮的多个车轮缸被分成通过双重液压回路中的一个与第一压力室连通的第一组车轮制动缸，并且第二组车轮制动缸与第二压力室连通， 双液压回路。 限流器限制第二活塞朝向第一活塞的滑动距离至少一个预定的距离以关闭阀装置。 由于这种结构，串联主缸的第一级怠速行程缩短，制动踏板的行程缩短。

公开(公告)号：US5065573A

公开(公告)日：1991-11-19

申请号：US552896

申请日：1990-07-16

申请人： Yoshihisa Nomura ,  Masahiko Kato ,  Michiharu Nishii

发明人： Yoshihisa Nomura ,  Masahiko Kato ,  Michiharu Nishii

IPC分类号： B60T13/12 ,  B60T8/44 ,  B60T8/48 ,  B60T8/94 ,  B60T13/14

CPC分类号： B60T8/441 ,  B60T13/143 ,  B60T13/145 ,  B60T8/445 ,  B60T8/4836 ,  B60T8/94

摘要： A hydraulic power booster having a lever device disposed in operative association with a reaction piston, a power piston and a valve spool, for moving the valve spool in one of opposite axial directions thereof for applying a pressure of a pressure source into a power chamber to advance the power piston, in response to a relative movement between the reaction and power pistons. The booster is provided with a backup actuator including a cylinder, and a valve drive piston which slidably engages the cylinder. The cylinder and the valve drive piston cooperate with each other to define a first fluid chamber communicating with the power chamber, and a second fluid chamber communicating with a pressure chamber in which a pressure is generated according to an advancing force of the power piston. The valve drive piston moves the valve spool in the above-indicated one axial direction, in engagement with the valve spool, when the valve drive piston is moved in a direction from the second fluid chamber toward the first fluid chamber.

摘要翻译： 一种液压动力助力器，其具有设置成与反作用活塞，动力活塞和阀芯操作关联的杠杆装置，用于在一个相反轴向方向上移动阀芯，以将压力源的压力施加到动力室中， 响应于反应和动力活塞之间的相对运动，推进动力活塞。 升压器设置有备用致动器，其包括气缸和可滑动地接合气缸的气门驱动活塞。 气缸和阀驱动活塞彼此配合以限定与动力室连通的第一流体室，以及与根据动力活塞的推进力产生压力的压力室连通的第二流体室。 当阀驱动活塞沿着从第二流体室朝向第一流体室的方向移动时，阀驱动活塞将阀芯沿着上述一个轴向移动，与阀芯接合。

公开(公告)号：US5054860A

公开(公告)日：1991-10-08

申请号：US474333

申请日：1990-02-02

申请人： Yoshihisa Nomura ,  Masahiko Kato ,  Michiharu Nishii

发明人： Yoshihisa Nomura ,  Masahiko Kato ,  Michiharu Nishii

IPC分类号： B60T8/44 ,  B60T8/88 ,  B60T8/94 ,  B60T13/12 ,  B60T17/22

CPC分类号： B60T17/226 ,  B60T8/445 ,  B60T8/885 ,  B60T8/94

摘要： A hydraulic braking system for an automotive vehicle is provided with a power source for generating a hydraulic power pressure, a master cylinder, a hydraulic booster for introducing the hydraulic power pressure and actuating the master cylinder in response to operation of a brake operating member, a wheel brake cylinder for braking a road wheel, a changeover valve, and anti-skid control device for actuating the changeover valve into a position where the wheel brake cylinder is communicated with the booster and regulating the hydraulic pressure in the wheel brake cylinder on the basis of the hydraulic power pressure in the booster when the road wheel is in a slip condition. The hydraulic braking system includes a failure detecting feature for producing a power pressure failure signal when the hydraulic power pressure in the booster is lower than the master cylinder pressure by at least a predetermined value, an anti-skid prohibiting device for prohibiting the anti-skid control operation in accordance with the failure signal, and a detection preventing feature for preventing the failure detecting features from producing the failure signal when the hydraulic power pressure in the booster exceeds a predetermined pressure which is lower than a limit pressure for boosting operation of the booster.

摘要翻译： 一种用于机动车辆的液压制动系统设置有用于产生液压动力压力的动力源，主缸，用于响应于制动操作构件的操作引入液压动力压力和致动主缸的液压助力器， 用于制动车轮的车轮制动缸，切换阀和用于将切换阀致动到车轮制动缸与增压器连通的位置的防滑控制装置，并且基于车轮制动缸的液压来调节 当车轮处于滑动状态时助力器中的液压动力压力。 液压制动系统包括当助力器中的液压动力压力低于主缸压力至少预定值时产生动力压力故障信号的故障检测功能，用于禁止防滑的防滑装置 根据故障信号的控制操作，以及当升压器中的液压功率压力超过预定压力时防止故障检测特征产生故障信号的检测防止特征，该预定压力低于用于升压助力器的升压操作的极限压力 。

公开(公告)号：US5052182A

公开(公告)日：1991-10-01

申请号：US282567

申请日：1988-12-12

申请人： Michiharu Nishii ,  Genji Mizuno ,  Yoshihiko Tada ,  Yoshihisa Nomura ,  Masahiko Kato ,  Kenji Shirai ,  Junichi Tanoue

发明人： Michiharu Nishii ,  Genji Mizuno ,  Yoshihiko Tada ,  Yoshihisa Nomura ,  Masahiko Kato ,  Kenji Shirai ,  Junichi Tanoue

IPC分类号： B60T13/12 ,  B60T13/14

CPC分类号： B60T13/145

摘要： A tandem master brake cylinder has first and second pistons, each piston associated with a fluid chamber and a pressure chamber. The pistons are displaced in response to actuation of a brake pedal. A hydraulic booster is coupled to a power source and is operable to enhance the piston movement and for conducting pressurized fluid to a second of the fluid chambers associated with a second piston to displace that piston in a manner reducing the volume of the pressure chamber associated with the first piston. In the event that a negative pressure is communicated with the second fluid chamber, e.g. by a loss of pressurized fluid from the power source, brake fluid is supplied through a one-way check valve to the second fluid chamber to prevent the negative pressure from reversing the motion of the second piston.

摘要翻译： 串联主制动缸具有第一和第二活塞，每个活塞与流体室和压力室相关联。 响应于制动踏板的致动，活塞被移动。 液压助力器联接到动力源并且可操作以增强活塞运动并将加压流体传导到与第二活塞相关联的第二个流体室，以便以减小与压力室相关联的压力室的体积的方式移动该活塞 第一个活塞。 在负压与第二流体室连通的情况下，例如， 通过来自动力源的加压流体的损失，制动流体通过单向止回阀供给到第二流体室，以防止负压反转第二活塞的运动。

公开(公告)号：US5024492A

公开(公告)日：1991-06-18

申请号：US386250

申请日：1989-07-28

申请人： Michiharu Nishii ,  Genji Mizuno ,  Yoshihisa Nomura ,  Masahiko Kato

发明人： Michiharu Nishii ,  Genji Mizuno ,  Yoshihisa Nomura ,  Masahiko Kato

IPC分类号： B60T13/12 ,  B60T8/44 ,  B60T8/48 ,  B60T11/18 ,  B60T13/14

CPC分类号： B60T8/445 ,  B60T11/18 ,  B60T13/146 ,  B60T8/4836

摘要： A hydraulic braking system for an automotive vehicle having a power source for generating a hydraulic power pressure, a reservoir, a master cylinder, a hydraulic booster for actuating the master cylinder in response to depression of a brake pedal and a plurality of wheel brake cylinders for braking respective road wheels, which are divided into a first group of wheel brake cylinders communicating with the master cylinder and a second group of wheel brake cylinders communicating with the hydraulic booster. An auxiliary cylinder is disposed between the hydraulic booster and the second group of wheel brake cylinders. The auxiliary cylinder includes a cylinder body having a cylinder bore defined therein and a piston axially slidably disposed within the cylinder bore. The piston forms within the cylinder bore a first chamber and a second chamber, and blocks a fluid communication therebetween. The first chamber communicates with the hydraulic booster and the second chamber communicates with the second group of wheel brake cylinders to which a braking force is applied in response to operation of the hydraulic booster. Thereby, the brake fluid filled in the hydraulic booster is prevented from flowing out, even if leakage of the brake fluid occurs in the second group of wheel brake cylinders.