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1.发明授权Multi-part primary pressure-balanced proportioning valve with brake pressure failure switch 失效多部分主压力平衡比例阀，带制动压力故障开关
公开(公告)号：US4815292A
公开(公告)日：1989-03-28
申请号：US160784
申请日：1988-02-18
CPC分类号： B60T11/16 , B60T11/20 , B60T11/34 , B60T8/1831 , B60T8/1881 , B60T8/26 , B60T8/265
摘要： The proportioning valve assembly may be screwed into a complementary-shaped opening in a master cylinder. The valve assembly includes a differential area piston biased by a spring toward the outlet which communicates with the rear brakes. The master cylinder includes a pair of passageways which communicate primary fluid pressure and secondary fluid pressure directly to the differential area piston of the proportioning valve assembly to displace the piston to a balanced position. If there is a failure of pressure in the primary brake circuit, the proportioning valve assembly actuates the differential area piston to permit fluid flow to bypass the piston and be communicated directly to the rear brakes of the vehicle. Upon failure, a differential area sleeve surrounding the piston moves to actuate an electrical failure warning switch.
摘要翻译： 配比阀组件可以拧入主缸中的互补形状的开口中。 阀组件包括一个由弹簧偏压到与后制动器连通的出口的差动区域活塞。 主缸包括一对通道，其将初级流体压力和次级流体压力直接传递到比例阀组件的差动区域活塞，以将活塞移动到平衡位置。 如果主制动回路中存在压力失败，则比例阀组件致动差动区域活塞以允许流体流动绕过活塞并直接连接到车辆的后制动器。 当故障时，围绕活塞的差动区域套筒移动以致动电故障警告开关。
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公开(公告)号：US5046313A
公开(公告)日：1991-09-10
申请号：US385529
申请日：1989-07-27
CPC分类号： B60T17/226 , B60T17/225
摘要： A master cylinder (12) having a switch (70) which is activated by either a magnet (78) carried by a float (76) in a reservoir (40) or a pin (66) moved by a differential area piston (52). The switch (70) had a first blade (82) connected a source of electrical current (106) through an indicator light (124) and a second blade (88) connected to an electrical ground (114). A reed switch (100) is connected to the first (82) and second (88) blades and responds to the magnet to close an electrical circuit to operate the indicator light (124) if a low fluid level is present in the reservoir (40). A first contact (96) on the first blade (82) is positioned in switch 70 by a non-electrical conductive actuation pin (66) that extends through the housing (22) of the master cylinder (12). A second contact (94) on the second blade ( 88) has a projection (92) that engages the housing (22) of the master cylinder (12) to define a fixed location for the first contact (94) and establish a fixed gap between the first (94) and second (96) contacts. If a pressure differential is created in the master cylinder (12) between the fluid pressure supplied to operate the wheel brakes (18) and (20), the differential area piston (52) moves and brings the second contact (96) into engagement with the first contact (94) to close the electrical circuit and activate the indicator light (124).
摘要翻译： 具有开关（70）的主缸（12）由由容器（40）中的浮子（76）承载的磁体（78）或通过差动区域活塞（52）移动的销（66）来启动的开关 。 开关（70）具有通过连接到电接地（114）的指示灯（124）和第二叶片（88）连接电流源（106）的第一叶片（82）。 簧片开关（100）连接到第一（82）和第二（88）刀片，并响应于磁体以闭合电路以操作指示灯（124），如果液体中存在低液位（40） ）。 第一叶片（82）上的第一接触件（96）通过延伸穿过主缸（12）的壳体（22）的非导电致动销（66）定位在开关70中。 第二叶片（88）上的第二接触件（94）具有与主缸（12）的壳体（22）接合以限定第一接触件（94）的固定位置并建立固定间隙的突起（92） 在第一（94）和第二（96）接触之间。 如果在主缸（12）中在提供用于操作车轮制动器（18）和（20）的流体压力之间产生压差，则差动区域活塞（52）移动并使第二接触件（96）与 所述第一触点（94）关闭所述电路并激活所述指示灯（124）。
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公开(公告)号：US4929033A
公开(公告)日：1990-05-29
申请号：US266964
申请日：1988-11-03
IPC分类号： B60T8/26 , B60T11/16 , B60T11/224 , B60T11/34
CPC分类号： B60T11/224 , B60T11/16 , B60T11/34 , B60T8/265
摘要： The proportioning valve assembly (40, 140) may be screwed into a complementary-shaped opening in a master cylinder (10). The valve assembly (40, 140) includes a differential area piston (50, 150) biased by a spring (70, 170) toward the outlet (21, 121) which communicates with the rear brakes. The master cylinder (10) includes a pair of passageways (16, 18) which communicate primary fluid pressure and secondary fluid pressure directly to the differential area piston (50, 150) of the proportioning valve assembly (40, 140) to displace the piston (50, 150) to a balanced position. If there is a failure of pressure in the primary brake circuit, the proportioning valve assembly (40, 140) actuates the differential area piston (50, 150) to permit fluid flow to bypass the piston (50, 150) and be communicated directly to the rear brakes of the vehicle.
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公开(公告)号：US4995676A
公开(公告)日：1991-02-26
申请号：US450359
申请日：1989-12-08
CPC分类号： B60T11/34 , B60T17/226 , B60T8/26 , B60T8/265
摘要： The positioning ring (44) for a hydraulically operated warning device (80) may be utilized for any hydraulically movable piston or sleeve (52) which, when properly assembled, causes a warning device (80) to effect an initial mode of response. The positioning ring (44) has a reduced inner diameter portion (41) separated from an enlarged inner diameter portion (43) by way of a radial shoulder (42). The enlarged inner diameter portion (43) abuts a shoulder (17) of a surrounding housing (11) and the radial shoulder (42) abuts a shoulder (59) of the piston or sleeve (52). The housing (11) may contain a warning device (80) which engages the piston or sleeve (52) such that if the piston or sleeve (52) is displaced in an axial direction the warning device (80) is operated. Should the centering ring (44) be mis-assembled or not included in the assembly, either the misassembled positioning ring (44) or the lack of the positioning ring ( 44) permits the piston or sleeve (52) to be moved to a position where the warning device (80) is operated to provide an indication that the positioning ring (44) is either misassembled or missing from the assembly.
摘要翻译： 用于液压操作的警告装置（80）的定位环（44）可以用于任何液压可移动的活塞或套筒（52），当适当地组装时，其使警告装置（80）实现初始的响应方式。 定位环（44）具有通过径向肩部（42）与扩大的内径部分（43）分离的减小的内径部分（41）。 扩大的内径部分（43）邻接周围的壳体（11）的肩部（17）并且径向肩部（42）邻接活塞或套筒（52）的肩部（59）。 壳体（11）可以包含与活塞或套筒（52）接合的警告装置（80），使得如果活塞或套筒（52）在轴向方向上移动，则警告装置（80）被操作。 如果定心环（44）错误组装或不包括在组件中，则组装好的定位环（44）或定位环（44）的缺少允许活塞或套筒（52）移动到位置 其中操作警告装置（80）以提供定位环（44）从组件中被错误组装或丢失的指示。
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公开(公告)号：US4821519A
公开(公告)日：1989-04-18
申请号：US67514
申请日：1987-06-29
申请人： Robert F. Gaiser , John E. Steer , Donald A. Crumb
发明人： Robert F. Gaiser , John E. Steer , Donald A. Crumb
摘要： The proportioning valve assembly (40, 140) may be screwed into a complementary-shaped opening in a master cylinder (10). The valve assembly (40, 140) includes a differential area piston (50, 150) biased by a spring (70, 170) toward the outlet (21, 121) which communicates with the rear brakes. The master cylinder (10) includes a pair of passageways (16, 18) which communicate primary fluid pressure and secondary fluid pressure directly to the differential area piston (50, 150) of the proportioning valve assembly (40, 140) to displace the piston (50, 150) to a balanced position. If there is a failure of pressure in the primary brake circuit, the proportioning valve assembly (40, 140) actuates the differential area piston (50, 150) to permit fluid flow to bypass the piston (50, 150) and be communicated directly to the rear brakes of the vehicle.
摘要翻译： 比例阀组件（40,140）可以拧入主缸（10）中的互补形状的开口中。 阀组件（40,140）包括通过与后制动器连通的出口（21,121）偏置的弹簧（70,170）的差动区域活塞（50,150）。 主缸（10）包括一对通道（16,18），其将初级流体压力和次级流体压力直接连接到比例阀组件（40,140）的差动区域活塞（50,150），以使活塞 （50,150）到平衡位置。 如果主制动回路中存在压力失败，则比例阀组件（40,140）致动差动区域活塞（50,150），以允许流体流动绕过活塞（50,150）并直接连通 车辆的后制动器。
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公开(公告)号：US4908522A
公开(公告)日：1990-03-13
申请号：US274078
申请日：1988-11-21
申请人： Donald A. Crumb , Robert F. Gaiser , John E. Steer
发明人： Donald A. Crumb , Robert F. Gaiser , John E. Steer
摘要： A proportioning valve (40) is disposed within a stepped bore (13) of a master cylinder (10). The proportioning valve (40) defines with the stepped bore (13) a primary pressure receiving chamber (26) and a secondary pressure receiving chamber (28). The proportioning valve (40) includes a two-part piston (58) which includes a primary piston part (52) and a secondary piston part (54) coupled together by a lost motion coupling (53, 55). The piston parts (52, 54) are biased apart by a spring (78), and a sleeve (43) is disposed about the two-part piston (50). Seals (46, 47, 69) are disposed about the primary piston part (52), sleeve (43) and secondary piston part (54) to define an intermediate vented chamber (90), wherein a vent (19) communicates with a reservoir. Pressure failure within the primary receiving chamber (26) causes the primary piston part (52) to be displaced and close off the vent (19 ) so that fluid pressure is trapped within the intermedaite chamber (90) to prevent the secondary piston part (54) from effecting the metering of fluid flow through an outlet (21).
摘要翻译： 比例阀（40）设置在主缸（10）的阶梯孔（13）内。 配比阀（40）用阶梯孔（13）限定一个初级压力接收室（26）和二级压力接收室（28）。 比例阀（40）包括两部分活塞（58），其包括主活塞部分（52）和通过空转联接（53,55）联接在一起的次级活塞部分（54）。 活塞部分（52,54）被弹簧（78）偏压，并且套筒（43）围绕两部分活塞（50）设置。 密封件（46,47,69）围绕主活塞部件（52），套筒（43）和次级活塞部件（54）设置以限定中间通气室（90），其中通风口（19）与储存器 。 主接收室（26）内的压力故障导致主活塞部分（52）移动并且关闭通气孔（19），使得流体压力被捕获在中间腔室（90）内以防止次级活塞部件（54） ）来实现通过出口（21）的流体流量计量。
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公开(公告)号：US5016442A
公开(公告)日：1991-05-21
申请号：US385502
申请日：1989-07-27
CPC分类号： G01F23/74 , B60T11/22 , B60T17/226 , G01L19/12 , H01H35/38 , H01H36/0006
摘要： A master cylinder having a housing with a first bore therein for retaining a pair of pistons which move in response to an input force and develop fluid pressure to effect a brake application. A second bore in the housing carries a differential area piston connected to the pressure chambers. A reed switch retained in the housing is aligned with a first magnet located on a float in a reservoir and a second magnet is attached to the differential area piston. A ferromagnetic shield located between the reed switch and second magnet has first and second openings located in a plane on either side of the reed switch. Should a failure occur in either pressure chamber, the differential area piston moves to allow magnetic field to pass through the openings in the shield and activate the reed switch to develop a warning signal and inform an operator of a failure mode condition in the master cylinder.
摘要翻译： 主缸，其具有壳体，其中具有第一孔，用于保持一对响应于输入力移动的活塞并且产生流体压力以实现制动施加。 壳体中的第二孔承载连接到压力室的差动区域活塞。 保持在壳体中的簧片开关与位于储存器中的浮子上的第一磁体对准，并且第二磁体附接到差动区域活塞。 位于舌簧开关和第二磁体之间的铁磁屏蔽具有位于舌簧开关两侧的平面中的第一和第二开口。 如果两个压力室都发生故障，则差动区域活塞移动以允许磁场穿过屏蔽中的开口，并激活簧片开关以产生警告信号，并通知操作者主缸中的故障模式状态。
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公开(公告)号：US4843820A
公开(公告)日：1989-07-04
申请号：US187720
申请日：1988-04-29
申请人： Robert F. Gaiser , Donald A. Crumb
发明人： Robert F. Gaiser , Donald A. Crumb
IPC分类号： B60T11/224
CPC分类号： B60T11/224
摘要： The brake system in-line fast fill valve (10) of the present invention comprises a valve housing (12) which may be threadably inserted within the body of a master cylinder so that an inlet (28) at one end of the fast fill valve (10) communicates with an outlet (39) from a pressure chamber (33) of the master cylinder (30). The valve housing (12) includes a stepped bore (22) having a differential area fast fill piston (40) receiving slidably therein a poppet piston (60). A first seal (50) is disposed about a reduced diameter portion (46) of the fast fill piston (40) and axially opposite a second seal (52) disposed at an enlarged diameter end (48) of the fast fill piston (40). The second seal (52) is received about a second radially enlarged end (62) of the poppet piston (60), the poppet piston (60) extending through the fast fill piston (40) and an end opening (44 ) within the fast fill piston (40), with a third seal (56) disposed about a first poppet end (66) and abutting a reduced diameter end (42) of the fast fill piston (40). A first spring (72) biases the poppet piston (60) into engagement with the fast fill piston (40), and a second spring (74) extends between a second radially enlarged end (68) of the poppet piston (60) and a radial wall (23) of said stepped bore (22). The enlarged ends (48, 68) of the pistons (40, 60) are disposed within a fast fill chamber (24) which communicates with an outlet (20) of the fast fill valve housing (12). The fast fill valve (10) effects a quick transmittal of fluid to a brake piston, and effects a slight delay in the transmission of higher pressure to the brake so that the fast fill valve (10) function as a hold-off valve.
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公开(公告)号：US5207062A
公开(公告)日：1993-05-04
申请号：US920965
申请日：1992-07-28
申请人： Robert K. Wilson , Donald A. Crumb
发明人： Robert K. Wilson , Donald A. Crumb
IPC分类号： B60T11/20 , B60T11/232 , B60T11/26
CPC分类号： B60T11/232 , B60T11/20 , B60T11/26
摘要： A center-compensation master cylinder (10) has first (20) and second (30) pistons with center-compensation valve members (27, 37). The pistons (20, 30) have diametrically extending slots (22, 32) at central axial portions thereof through which extend pin members (53, 54) to effect opening of the valve members (27, 37) when the pistons (20, 30) are in at-rest positions. A first spring (29) extends between a head (24) of the first piston (20) and the second piston (30), and a second spring (39) extends between an end (15) of the bore 0 (I4) and the head (34) of the second piston (30). The first spring (29) is caged via a caging mechanism (60) ensuring that the first (20) and second (30) pistons will travel simultaneously when the center-compensation valve members (27,37) are closing. The caging mechanism (60) is adjustable to control accurately the location of the second piston (30 ) in an at-rest position. The caging mechanism comprises an end part (47) non-rotatably and axially coupled with longitudinal extensions (40) of the head (24) of the first piston (20), a member (65) adjustably coupled with a threaded end (47C) of the end part (47), and a head (66) of the member (65) abutting a cage end member (70) which seats at a back portion (31) of the second piston (30). The cage end member (70) is cup-shaped and includes a radially flared lip (74) providing a seat for one end of the first spring (29) while the other end of the first spring (29) is received at a diametral extension (28) of the first piston (20).
摘要翻译： 中心补偿主缸（10）具有具有中心补偿阀构件（27,37）的第一（20）和第二（30）活塞。 活塞（20,30）在其中心轴向部分处具有径向延伸的槽（22,32），当活塞（20,30）处于活塞（20,30）时，销子构件（53,54）延伸到阀构件（27,37） ）处于休息状态。 第一弹簧（29）在第一活塞（20）的头部（24）和第二活塞（30）之间延伸，第二弹簧（39）在孔0（I4）的端部（15）和 第二活塞（30）的头部（34）。 第一弹簧（29）通过笼式机构（60）笼定，确保当中心补偿阀构件（27,37）关闭时第一活塞（20）和第二活塞（30）同时运行。 起重机构（60）是可调节的，以便精确地控制第二活塞（30）处于静止位置的位置。 笼式机构包括不可旋转地并且轴向地与第一活塞（20）的头部（24）的延伸部（40）连接的端部（47），与螺纹端（47C）可调节地联接的构件（65） 和所述构件（65）的头部（66）抵靠在所述第二活塞（30）的后部（31）上的笼端构件（70）。 笼端构件（70）是杯形的，并且包括径向扩张的唇缘（74），其为第一弹簧（29）的一端提供座位，而第一弹簧（29）的另一端以直径延伸 （20）的所述第二活塞（28）。
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公开(公告)号：US5946914A
公开(公告)日：1999-09-07
申请号：US182622
申请日：1998-10-29
申请人： Donald A. Crumb , Thad A. Nevitt
发明人： Donald A. Crumb , Thad A. Nevitt
CPC分类号： B60T11/26
摘要： A master cylinder having a first housing with an axial bore therein which is connected to a second housing of a reservoir. The axial bore has a first replenishing port surrounded by a first boss and a second replenishing port surrounded by a second boss. A first radial bore in the first boss extends from the first replenishing port while a second radial bore in the second boss extends from the second replenishing port. First and second spigots which extends from the second housing are respectively located in the first and second radial bores to provide first and second flow communication paths from the reservoir to the axial bore. The first housing is secured to the second housing by a connecting arrangement characterized by a first pin that extends through the first boss and first spigot and a second pin that extends through the second boss and the second spigot to respectively retain first and second seals within the first and second radial bores without the introduction of side load forces which may provide a leak path between either the first or second flow communication paths and the surrounding environment.
摘要翻译： 主缸，具有其中具有轴向孔的第一壳体，其连接到储存器的第二壳体。 轴向孔具有由第一凸起围绕的第一补充口和由第二凸起围绕的第二补充口。 第一凸台中的第一径向孔从第一补充口延伸，而第二凸台中的第二径向孔从第二补充口延伸。 从第二壳体延伸的第一和第二插口分别位于第一和第二径向孔中，以提供从储存器到轴向孔的第一和第二流动连通路径。 第一壳体通过连接装置固定到第二壳体，该连接装置的特征在于延伸穿过第一凸台和第一插口的第一销和延伸穿过第二凸台和第二插口的第二销，以分别将第一和第二密封件保持在内 第一和第二径向孔，而不引入可能在第一或第二流动连通路径和周围环境之间提供泄漏路径的侧向载荷力。
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