公开(公告)号：US08347622B2

公开(公告)日：2013-01-08

申请号：US12382717

申请日：2009-03-23

申请人： Takato Ogiwara ,  Takayuki Kinoshita

发明人： Takato Ogiwara ,  Takayuki Kinoshita

IPC分类号： B60T11/20

CPC分类号： B60T11/236

摘要： A master cylinder includes a bottomed cylindrical cylinder body, a piston formed into a bottomed cylindrical shape by a forging method and slidably disposed in the cylinder body, and a spring assembly including a spring urging the piston toward an opening side of the cylinder body. A length of a spring of the spring assembly is determined by a retainer which can abut against an inner bottom portion of the piston. An annular groove is formed on the outermost side of the inner bottom portion of the piston by the forging method.

摘要翻译： 主缸包括有底圆柱形缸体，通过锻造方法形成为有底圆柱形的活塞并可滑动地设置在缸体中的活塞，以及弹簧组件，其包括将活塞朝向缸体的开口侧施力。 弹簧组件的弹簧的长度由可抵靠活塞内底部的保持器确定。 通过锻造方法在活塞的内底部的最外侧形成环状槽。

公开(公告)号：US20110048226A1

公开(公告)日：2011-03-03

申请号：US12870330

申请日：2010-08-27

申请人： Ryoichi YAGI ,  Naganori KOSHIMIZU ,  Takato OGIWARA

发明人： Ryoichi YAGI ,  Naganori KOSHIMIZU ,  Takato OGIWARA

IPC分类号： F16J10/00

CPC分类号： B60T11/232

摘要： A master cylinder includes a cylinder body which an operating fluid is introduced from a reservoir, a piston which is slidably fitted in the cylinder body and defines a pressure chamber inside the cylinder body, a supply pathway which is formed in the cylinder body and supplies the operating fluid from the reservoir to the pressure chamber, a bypass pathway which bypasses the supply pathway and allows the reservoir to communicate with the pressure chamber, and a check valve which is installed in the bypass pathway and opens a valve when the pressure inside the pressure chamber is lower than the pressure of the reservoir.

摘要翻译： 主缸包括：缸体，其工作流体从储存器引入;活塞，其可滑动地装配在缸体中并且限定在缸体内的压力室;供应通道，其形成在缸体中并供应 工作流体从储存器到压力室，旁路通路绕过供应通道并允许储存器与压力室连通;以及止回阀，其安装在旁路通路中并且当压力在压力内时打开阀门 室低于储层的压力。

公开(公告)号：US20100244549A1

公开(公告)日：2010-09-30

申请号：US12730704

申请日：2010-03-24

申请人： Naganori KOSHIMIZU ,  Takato Ogiwara

发明人： Naganori KOSHIMIZU ,  Takato Ogiwara

IPC分类号： B60T11/224 ,  B60T15/48 ,  B60T17/18 ,  B60T17/02 ,  B60T11/16

CPC分类号： B60T11/18 ,  B60T7/042 ,  Y10S303/02

摘要： Provided are a vehicle braking system and a master cylinder which are capable of providing a good pedal feel. A valve-opening pressure for a pressure-reducing valve of the master cylinder is set higher than a hydraulic pressure which is obtained with a pressing force on a brake pedal being 500 N and lower than a hydraulic pressure obtained at a time when a booster reaches a full-load point in case of failure of the booster so as to be specialized for improving pedal feel. Required performance in case of failure of the booster is realized by a pressure-intensifying unit.

摘要翻译： 提供能够提供良好的踏板感觉的车辆制动系统和主缸。 主缸的减压阀的开阀压力设定为高于在制动踏板上的压力为500N并且低于在增压器达到时获得的液压压力时获得的液压压力 在加速器故障的情况下的满载点，以便专门改善踏板感觉。 增压器发生故障时的所需性能由压力增强单元实现。

公开(公告)号：US20090241768A1

公开(公告)日：2009-10-01

申请号：US12382717

申请日：2009-03-23

申请人： Takato Ogiwara ,  Takayuki Kinoshita

发明人： Takato Ogiwara ,  Takayuki Kinoshita

IPC分类号： F01B11/02

CPC分类号： B60T11/236

摘要： A master cylinder comprises a bottomed cylindrical cylinder body, a piston formed into a bottomed cylindrical shape by the forging method and slidably disposed in the cylinder body, and a spring assembly comprising a spring urging the piston toward an opening side of the cylinder body. A length of a spring of the spring assembly is determined by a retainer which can abut against an inner bottom portion of the piston. An annular groove is formed on the most outer side of the inner bottom portion of the piston by the forging method.

摘要翻译： 主缸包括有底圆柱形缸体，通过锻造方法形成为有底圆柱形的活塞并可滑动地设置在缸体中的弹簧组件，以及弹簧组件，其包括将活塞推向气缸体的开口侧。 弹簧组件的弹簧的长度由可抵靠活塞内底部的保持器确定。 通过锻造方法在活塞的内底部的最外侧形成环形槽。

公开(公告)号：US20090025385A1

公开(公告)日：2009-01-29

申请号：US12219673

申请日：2008-07-25

申请人： Takato Ogiwara ,  Takayuki Kinoshita

发明人： Takato Ogiwara ,  Takayuki Kinoshita

IPC分类号： B60T11/22 ,  B60T11/28

CPC分类号： B60T11/232

摘要： An object of the present invention is to make it possible to easily improve precision with which the valve body is seated on the valve seat of the check valve, and provide a master cylinder which can be easily manufactured and in which high precision is realized. In a master cylinder, a supply passage for supplying operating liquid from a reservoir 2 to a pressure chamber 6 is provided in a cylinder body 3 coupled with the reservoir 2. A bypass passage 37 for bypassing the supply passage and connecting the reservoir 2 and the pressure chamber 6 is further provided, and a check valve 34 adapted to open when a pressure in the pressure chamber 6 is lower than that in the reservoir 2 is disposed in the bypass passage 37. A valve case 38 containing a valve body 41 of the check valve 34 comprises a valve seat 40 which the valve body 41 is seated on and moves away from, and a cylindrical wall 45 for slidably guiding the valve body 41 which are integrally formed as a single member.

摘要翻译： 本发明的目的在于，能够容易地提高阀体在止回阀的阀座上的准确度，能够容易地制造并实现高精度的主缸。 在主缸中，在与储存器2联接的缸体3中设置有用于将操作液体从储存器2供给到压力室6的供给通道。旁通通道37用于旁路供应通道并将储存器2和 进一步设置有压力室6，并且当在压力室6中的压力低于储存器2中的压力时，止回阀34设置在旁通通道37中。阀壳38包含阀体41 止回阀34包括阀体41安置在其上并远离的阀座40和用于可滑动地引导阀体41的圆柱形壁45，其一体地形成为单个构件。

公开(公告)号：US07003954B2

公开(公告)日：2006-02-28

申请号：US10924787

申请日：2004-08-25

申请人： Takato Ogiwara ,  Toshio Takayama

发明人： Takato Ogiwara ,  Toshio Takayama

IPC分类号： B60T8/00

CPC分类号： B60T8/4081 ,  B60T8/32 ,  B60T11/20 ,  B60T2270/404

摘要： A master cylinder apparatus for a BBW system is provided, which eliminates a risk of brake delay, even with the use of a plunger-type master cylinder, and which therefore is able to achieve a reduction in size of a master cylinder. The master cylinder apparatus comprises a tandem-type master cylinder connected to wheel cylinders through fail-safe valves and a stroke simulator for ensuring a desired stroke of a brake pedal upon receiving a brake fluid introduced from a fluid pressure chamber in the master cylinder. The master cylinder is arranged in the form of a plunger-type master cylinder in which cup seals are provided on an inner surface of a bore of the cylinder body. A spring force of a second return spring for a secondary piston is set to be larger than that of a first return spring for a primary piston. A retracted position of the secondary piston is limited by a stopper pin extending through an oblong hole formed in the secondary piston.

摘要翻译： 提供了一种用于BBW系统的主缸装置，即使使用柱塞式主缸也能消除制动延迟的风险，因此能够实现主缸的尺寸减小。 主缸装置包括通过故障安全阀连接到轮缸的串联式主缸和用于在接收从主缸中的流体压力室引入的制动流体时确保制动踏板的期望行程的行程模拟器。 主缸以柱塞式主缸的形式布置，其中杯密封件设置在缸体的孔的内表面上。 用于次级活塞的第二复位弹簧的弹簧力被设定为大于用于主活塞的第一复位弹簧的弹簧力。 第二活塞的缩回位置由延伸穿过形成在第二活塞中的长孔的止动销限制。

公开(公告)号：US20050067885A1

公开(公告)日：2005-03-31

申请号：US10924837

申请日：2004-08-25

申请人： Takato Ogiwara ,  Toshio Takayama

发明人： Takato Ogiwara ,  Toshio Takayama

IPC分类号： B60T8/17 ,  B60T8/40 ,  B60T11/20 ,  B60T13/16

CPC分类号： B60T8/4081 ,  B60T11/20 ,  B60T13/161

摘要： A master cylinder apparatus for a BBW system is provided, which enables accurate detection of a piston stroke without substantial increase in the size of a master cylinder. A master cylinder apparatus comprises a master cylinder adapted to be connected to wheel cylinders through fail-safe valves, a stroke simulator for ensuring a desired stroke of a brake pedal upon receiving a brake fluid introduced from a fluid pressure chamber in the master cylinder through a simulator passage, and an opening/closing means for opening and closing the simulator passage. A stroke sensor for detecting a stroke of a primary piston is formed by a rotation angle detector, a sensor arm having one end connected to a rotary shaft of the rotation angle detector and a sensor pin extending from the primary piston. A linear motion of the primary piston is converted to a rotational motion through engagement between the sensor pin and the sensor arm and is transmitted to the rotation angle detector.

摘要翻译： 提供了一种用于BBW系统的主缸装置，其能够精确地检测活塞冲程，而不会大幅增加主缸的尺寸。 主缸装置包括主缸，其适于通过故障安全阀连接到轮缸;行程模拟器，用于在接收从主缸中的流体压力室引入的制动流体时，确保制动踏板的期望行程， 模拟器通道，以及用于打开和关闭模拟器通道的打开/关闭装置。 用于检测主活塞的行程的行程传感器由旋转角度检测器，传感器臂，其一端连接到旋转角度检测器的旋转轴和从主活塞延伸的传感器销形成。 主活塞的直线运动通过传感器销和传感器臂之间的接合被转换为旋转运动，并被传递到旋转角度检测器。

公开(公告)号：US20050066656A1

公开(公告)日：2005-03-31

申请号：US10924787

申请日：2004-08-25

申请人： Takato Ogiwara ,  Toshio Takayama

发明人： Takato Ogiwara ,  Toshio Takayama

IPC分类号： B60T8/32 ,  B60T8/40 ,  B60T11/16 ,  B60T11/20

CPC分类号： B60T8/4081 ,  B60T8/32 ,  B60T11/20 ,  B60T2270/404

摘要： A master cylinder apparatus for a BBW system is provided, which eliminates a risk of brake delay, even with the use of a plunger-type master cylinder, and which therefore is able to achieve a reduction in size of a master cylinder. The master cylinder apparatus comprises a tandem-type master cylinder connected to wheel cylinders through fail-safe valves and a stroke simulator for ensuring a desired stroke of a brake pedal upon receiving a brake fluid introduced from a fluid pressure chamber in the master cylinder. The master cylinder is arranged in the form of a plunger-type master cylinder in which cup seals are provided on an inner surface of a bore of the cylinder body. A spring force of a second return spring for a secondary piston is set to be larger than that of a first return spring for a primary piston. A retracted position of the secondary piston is limited by a stopper pin extending through an oblong hole formed in the secondary piston.

摘要翻译： 提供了一种用于BBW系统的主缸装置，即使使用柱塞式主缸也能消除制动延迟的风险，因此能够实现主缸的尺寸减小。 主缸装置包括通过故障安全阀连接到轮缸的串联式主缸和用于在接收从主缸中的流体压力室引入的制动流体时确保制动踏板的期望行程的行程模拟器。 主缸以柱塞式主缸的形式布置，其中杯密封件设置在缸体的孔的内表面上。 用于次级活塞的第二复位弹簧的弹簧力被设定为大于用于主活塞的第一复位弹簧的弹簧力。 第二活塞的缩回位置由延伸穿过形成在第二活塞中的长孔的止动销限制。

公开(公告)号：US06840043B2

公开(公告)日：2005-01-11

申请号：US10377394

申请日：2003-02-27

申请人： Takato Ogiwara ,  Naganori Koshimizu

发明人： Takato Ogiwara ,  Naganori Koshimizu

IPC分类号： B60T11/224 ,  F15B7/04

CPC分类号： B60T11/224

摘要： A master cylinder that can sufficiently compensate for an ineffective fluid amount at an initial stage of a stroke, even at a time of sudden braking in a case where a hydraulic control unit is disposed between the master cylinder and a brake device, is provided. The master cylinder includes a control valve that releases hydraulic pressure in a large diameter pressurizing chamber to a reservoir side when the hydraulic pressure in the large diameter pressurizing chamber reaches a fluid-release pressure corresponding to hydraulic pressure introduced via a branched flow path that branches from a communication flow path that connects a hydraulic control unit and a small diameter hydraulic chamber. A restrictor is disposed in the branched flow path for introducing the hydraulic pressure to the control valve.

摘要翻译： 提供一种主缸，即使在液压控制单元配置在主缸和制动装置之间的情况下，即使在突然制动时，也能够充分地补偿行程的初始阶段的无效流体量。 主缸包括一个控制阀，当大直径加压室中的液压达到对应于通过分支流路径引导的液压压力的流体释放压力时，将大直径加压室中的液压压力释放到储存器侧 连接液压控制单元和小直径液压室的通信流路。 限流器设置在分支流路中，用于将液压引入控制阀。

公开(公告)号：US06698202B2

公开(公告)日：2004-03-02

申请号：US10084261

申请日：2002-02-26

申请人： Takato Ogiwara ,  Kenji Sano ,  Naganori Koshimizu ,  Hiromi Ando

发明人： Takato Ogiwara ,  Kenji Sano ,  Naganori Koshimizu ,  Hiromi Ando

IPC分类号： B60T11224

CPC分类号： B60T11/224 ,  B60T11/26

摘要： A master cylinder of the invention supplies a brake fluid from a large diameter pressurizing chamber 56 to a small diameter hydraulic chamber 49 by opening a reverse flow checking opening and closing portion 61 by sliding movement of a stepped piston 16 forwardly, that is, fast fill and when the hydraulic pressure of the large diameter pressurizing chamber 56 rises, a control valve 86 escapes the hydraulic pressure of the large diameter pressurizing chamber 56 to a reservoir 12 to gradually lower in accordance with rise of the hydraulic pressure of the small diameter hydraulic chamber 49, thereby capable of reducing a strange feeling in a pedal feeling caused by sudden pressure release of the large diameter pressuring chamber 56.

摘要翻译： 本发明的主缸通过向前倾斜阶梯式活塞16的滑动打开反向流动检查开闭部61来将制动液从大直径加压室56供给到小直径液压室49，即快速填充 并且当大直径加压室56的液压上升时，控制阀86将大直径加压室56的液压从储存器12排出，以便随着小直径液压室的液压升高逐渐降低 从而能够减小由大直径加压室56的突然的压力释放引起的踏板感觉的奇怪的感觉。