公开(公告)号：US6035634A

公开(公告)日：2000-03-14

申请号：US246847

申请日：1999-02-09

申请人： Myron D. Tupper ,  Bill Gallentine

发明人： Myron D. Tupper ,  Bill Gallentine

IPC分类号： B21J15/20 ,  F15B7/04 ,  F15B15/14 ,  F15B15/20 ,  H01R43/042 ,  F16D31/02

CPC分类号： F15B15/1433 ,  F15B15/1447 ,  F15B15/149 ,  F15B15/204 ,  Y10T137/7734 ,  Y10T137/7771 ,  Y10T137/7905

摘要： A hydraulic device includes a housing and a bulkhead disposed in the housing. A pump piston is provided in the housing and has first and second end surfaces with the second end surface of the pump piston and surfaces of the housing and of the bulkhead defining a pumping chamber. The pump piston is constructed and arranged to move within the housing to develop pressure on fluid in the pumping chamber. The first end surface of the pump piston and surfaces of the housing define a pump reservoir chamber. A ram piston is provided in the housing and has first and second end surfaces with the first end surface of the ram piston and surfaces of the housing and of the bulkhead defining a drive chamber. Connecting structure is associated with the bulkhead to communicate the pumping chamber with the drive chamber so that fluid pressure developed in the pumping chamber may be exerted on the first end surface of said ram piston. A barrier is provided in the housing between an end of the housing and the ram piston. Surfaces of the housing, the barrier and the second end surface of the ram piston define a ram reservoir chamber, and surfaces of the second end of the housing and of the barrier define an accumulator chamber. Passage and valve structure is associated with the barrier to selectively permit fluid to flow from the ram reservoir chamber to the accumulator chamber and from the accumulator chamber to the ram reservoir chamber. Passage and valve structure is associated with the ram piston to permit fluid flow from the ram reservoir chamber to the drive chamber. Passage and valve structure is associated with the pump piston to selectively permit fluid flow from the pump reservoir chamber to the pumping chamber and from the pumping chamber to the pump reservoir chamber, Communication structure fluidly communicates the accumulator chamber with the pump reservoir chamber. The ram piston is movable selectively at three speeds with corresponding magnitudes of force relative to a single speed of the pump piston.

公开(公告)号：US4703623A

公开(公告)日：1987-11-03

申请号：US786916

申请日：1985-10-11

申请人： Georges Dalibout ,  Michel Grenier ,  Daniel Cieplinski

发明人： Georges Dalibout ,  Michel Grenier ,  Daniel Cieplinski

IPC分类号： B60T11/224 ,  B60T13/44 ,  F04B9/127 ,  B60T11/08 ,  F15B7/04

CPC分类号： B60T11/224 ,  B60T13/44 ,  F04B9/127

摘要： A dual-piston hydraulic brake master cylinder includes a large hydraulic piston which supplies an initial large brake fluid volume and a small hydraulic piston which continues to supply brake fluid to the brakes when the large piston stops moving forward in its cylinder at higher brake pressures. The small, central hydraulic piston is connected to the end of a piston rod extension of a pneumatic booster piston. The large piston surrounds the small piston and opens a reservoir line tilt-valve in the piston retracted position. A passageway between the large and small hydraulic chambers is open in the retracted position to allow communication of braking fluid therebetween. During brake actuation a seal arrangement interrupts this communication. The large and small hydraulic chambers supply the brake circuits through delivery passages.

摘要翻译： 双活塞液压制动主缸包括大型液压活塞，其提供初始大的制动液体积和小型液压活塞，当大活塞在较高的制动压力下停止在其气缸中向前移动时，继续向制动器供应制动液。 小型中央液压活塞连接到气动助力器活塞的活塞杆延伸部分的末端。 大活塞围绕小活塞并在活塞缩回位置打开储液管线倾斜阀。 大液压室和小液压室之间的通道在缩回位置打开，以允许制动流体在其间连通。 在制动器致动期间，密封装置中断该通信。 大型和小型液压室通过输送通道供应制动回路。

公开(公告)号：US4027482A

公开(公告)日：1977-06-07

申请号：US581242

申请日：1975-05-27

申请人： Ferruccio Manzini

发明人： Ferruccio Manzini

IPC分类号： B60T11/20 ,  B60T11/224 ,  F15B7/04

CPC分类号： B60T11/224

摘要： The invention relates to a master-cylinder having a two-part cylinder, one part being of narrower diameter than the other, and a two-part piston slidable in the cylinder. Two pressure chambers are defined by the cylinder and the piston. Advance of the piston reduces the volume of both. One, the high pressure chamber feeds an external pressure system, and is itself fed by the other chamber through a valve system during an initial phase of the piston stroke. In a later phase the feed from the second in the first chamber ceases and instead the second chamber feeds the fluid reservoir through a control valve. Pressure-transmitting means such as a rod is arranged between the high pressure chamber and the control valve to open the control valve when the pressure in the high pressure chamber exceeds a predetermined value. A safety valve is provided downstream the control valve whereby, upon abnormal advance of the piston, terminating communication between the second chamber and the reservoir and again feeding the first chamber from the second chamber. The safety valve is actuated by a force transmitting element upon engagement with an abutment fixed relative to the master-cylinder housing.

摘要翻译： 本发明涉及一种具有两部分气缸，一部分具有比另一部分更小直径的主缸，以及可在气缸中滑动的两部分活塞。 两个压力室由气缸和活塞限定。 活塞的推进减少了两者的体积。 一个，高压室供给外部压力系统，并且在活塞冲程的初始阶段期间，其自身通过阀门系统由另一个室进料。 在稍后阶段，来自第一腔室中的第二腔室的进料停止，而第二腔室通过控制阀供给流体储存器。 压力传递装置如杆被设置在高压腔和控制阀之间，当高压腔中的压力超过预定值时打开控制阀。 安全阀设置在控制阀的下游，由此在活塞异常前进时，终止第二腔室和容器之间的连通，并再次将第一腔室从第二腔室供给。 当与相对于主缸壳体固定的邻接件接合时，安全阀由力传递元件致动。

公开(公告)号：US3057163A

公开(公告)日：1962-10-09

申请号：US9811361

申请日：1961-03-24

申请人： BAHCO AB

发明人： HENRY ALPING GUSTAV

IPC分类号： F15B7/04

CPC分类号： F15B7/04

公开(公告)号：US2433213A

公开(公告)日：1947-12-23

申请号：US66660646

申请日：1946-05-02

申请人： NEW YORK AIR BRAKE CO

发明人： VALENTINE GROVES MARTIN

IPC分类号： B60T11/22 ,  B60T11/224 ,  B60T17/22 ,  F15B7/04

CPC分类号： B60T17/222 ,  B60T11/22 ,  B60T11/224 ,  F15B7/04

公开(公告)号：US2407957A

公开(公告)日：1946-09-17

申请号：US49228143

申请日：1943-06-25

申请人： ARTHUR WILDE ,  MARTIN V GROVES

发明人： ARTHUR HULL-RYDE

IPC分类号： B60T11/224 ,  F15B7/04

CPC分类号： B60T11/224 ,  F15B7/04 ,  Y10T137/7781 ,  Y10T137/87257

公开(公告)号：US20050235642A1

公开(公告)日：2005-10-27

申请号：US11110877

申请日：2005-04-21

申请人： Kaoru Tsubouchi ,  Katsuhiro Mita ,  Hideaki Iijima

发明人： Kaoru Tsubouchi ,  Katsuhiro Mita ,  Hideaki Iijima

IPC分类号： B60T11/22 ,  B60T11/08 ,  B60T11/26 ,  B60T11/28 ,  F15B7/04 ,  F15B7/08 ,  F15B7/10

CPC分类号： B60T11/28 ,  B60T11/26 ,  F15B7/08 ,  F15B7/10

摘要： A master cylinder includes a cylinder body and primary and secondary pistons slidably received in the cylinder body, thereby defining first and second pressure chambers in the cylinder body. The first and second pressure chambers communicate with a reservoir through first and second fluid passages, respectively. During automatic brake control such as traction control or vehicle stability control, hydraulic fluid is drawn from the reservoir through the first and second pressure chambers. A throttle valve is received in each of the first and second fluid passages. The throttle valves are adapted to open while the master cylinder is inoperative and to close under backflow pressure when hydraulic fluid flows from the pressure chambers toward the reservoir. The throttle valves each include a floating valve body and a valve seat. The valve seat has its radially outer portion liquid-tightly joined and fixed to the cylinder body so that the fixed position of the valve seat and the lowermost position of the floating valve body are determined by the cylinder body.

摘要翻译： 主缸包括缸体和可滑动地容纳在缸体中的主活塞和次活塞，从而在缸体中限定第一和第二压力室。 第一和第二压力室分别通过第一和第二流体通道与储存器连通。 在诸如牵引力控制或车辆稳定性控制的自动制动控制期间，液压流体通过第一和第二压力室从储存器抽出。 节流阀被容纳在第一和第二流体通道的每一个中。 当液压流体从压力室朝向储存器流动时，节流阀适于在主缸不工作时打开并且在回流压力下关闭。 节流阀各自包括浮阀体和阀座。 阀座的径向外部部分液密地接合并固定到缸体，使得阀座的固定位置和浮阀体的最低位置由缸体确定。

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：US5755099A

公开(公告)日：1998-05-26

申请号：US742762

申请日：1996-11-01

申请人： Michael Hung

发明人： Michael Hung

IPC分类号： B66F3/24 ,  B66F5/04 ,  F15B7/04 ,  F15B15/18 ,  F15B15/20 ,  F16D31/02

CPC分类号： F15B15/18 ,  B66F5/04 ,  F15B7/04

摘要： A hydraulic circuit system for one-touch jack and its structure has an inlet circuit, a return circuit and an overload protection circuit with a hydraulic cylinder, a piston rod, a sequence valve, a safety valve and a relief valve, in which the inlet circuit extends from an outer reservoir of a hydraulic cylinder via a check valve to connect to an oil chamber of a manual pump. The oil chamber of the pump is connected to an oil guide tube via another check valve, the oil guide tube is inserted into an inner oil chamber formed in a piston rod to form a closed circuit. The oil chamber of the pump is connected to an inner chamber of the hydraulic cylinder via a sequence valve and the inner chamber is connected to the outer reservoir via a check valve. When the maximum effect capacity of the oil chamber of the piston rod, a single touch of the pump can raise the hydraulic jack to the required loading position for raising at no load or light load conditions.

摘要翻译： 一触式千斤顶的液压回路系统及其结构具有入口回路，回路和过载保护电路，液压缸，活塞杆，顺序阀，安全阀和安全阀，其中入口 电路通过止回阀从液压缸的外部容器延伸，以连接到手动泵的油室。 泵的油室通过另一止回阀连接到导油管，导油管插入形成活塞杆的内油室，形成闭路。 泵的油室通过顺序阀连接到液压缸的内腔，内腔通过止回阀连接到外储存器。 当活塞杆的油室的最大影响能力时，泵的单次触摸可以将液压千斤顶升高到所需的装载位置，以在无负载或轻负载条件下升高。

公开(公告)号：US4702530A

公开(公告)日：1987-10-27

申请号：US834753

申请日：1986-02-28

申请人： Juan Belart ,  Jochen Burgdorf ,  Wolfram Seibert

发明人： Juan Belart ,  Jochen Burgdorf ,  Wolfram Seibert

IPC分类号： B60T8/44 ,  B60T13/14 ,  B60T11/08 ,  F15B7/04 ,  F15B9/12

CPC分类号： B60T8/441 ,  B60T13/145

摘要： A hydraulic brake system (FIG. 2) composed of a master cylinder (30) coupled to the brake pedal (46), wherein there is provided a hydraulic booster (31) with a booster piston (91) and a booster chamber (35), and an auxiliary pressure proportional to the pedal force (F) develops in the booster chamber (35) during braking by way of a brake valve (6) actuated by the brake pedal (46). With the booster (31) intact, the auxiliary pressure prevailing in the booster chamber (35) acts by way of a pressure line (85, 87) on the two-stage piston (20) of a fast-fill cylinder (18), whose small stage (95) is immersed into a filling chamber (22) and, during the brake action, presses the pressure fluid available in the filling chamber (22) by way of pressure line (33) into the one brake line (37) connected to the working chamber (34) of the master cylinder (30). When the booster fails, the two-stage piston ( 20) of the fast-fill cylinder (18) remains in its initial position so that the piston (92) of the master cylinder (30) merely brings about pressure build-up in the two brake circuits (36, 37). The piston is moved by the brake pedal (46) by way of the actuating rod (11) and the piston rod (8).

摘要翻译： 一种由耦合到制动踏板（46）的主缸（30）组成的液压制动系统（图2），其中设置有具有助力活塞（91）和增压室（35）的液压助力器（31） 并且在制动期间通过由制动踏板（46）致动的制动阀（6）在助力室（35）中产生与踏板力（F）成比例的辅助压力。 在助力器（31）完好无损的情况下，增压室（35）中的辅助压力通过在快速充气汽缸（18）的两级活塞（20）上的压力线（85,87）起作用， 其小阶段（95）被浸入填充室（22）中，并且在制动作用期间，通过压力管线（33）将可用于填充室（22）中的压力流体压入一个制动管线（37） 连接到主缸（30）的工作室（34）。 当升压器失效时，快速充气缸（18）的两级活塞（20）保持在其初始位置，使得主缸（30）的活塞（92）仅仅在 两个制动回路（36,37）。 活塞通过制动踏板（46）通过致动杆（11）和活塞杆（8）移动。