公开(公告)号：EP0846608B1

公开(公告)日：2002-02-27

申请号：EP97121650.2

申请日：1997-12-09

申请人： TRW INC.

发明人： Strong, Daniel J.

IPC分类号： B62D5/083

CPC分类号： B62D5/0837 ,  Y10T137/86654

公开(公告)号：EP0949137A3

公开(公告)日：2001-04-04

申请号：EP99106192.0

申请日：1999-04-09

申请人： TRW INC.

发明人： Strong, Daniel J.

IPC分类号： B62D5/083

CPC分类号： B62D5/083 ,  B62D5/0837 ,  Y10T137/86654

摘要： A hydraulic fluid control valve (18) for a power steering gear (10) includes first and second relatively rotatable valve members (60, 62) which direct hydraulic fluid to flow between the valve members (60, 62) from inlet ports (70) to outlet ports (92). The valve members (60, 62) have radially opposed lands (71-79, 101-109) and grooves (81-89, 121-129) defining orifices (130) that enlarge and orifices (130) that constrict upon relative rotation of the valve members (60, 62) from neutral positions. A pair of the constricting orifices (130b, 130c) are located in parallel between the inlet ports (90) and the outlet ports (92). Each of those parallel constricting orifices (130b, 130c) is defined by a corresponding chamfered corner portion of a corresponding land (101, 102). The valve members (60, 62) provide back pressure at selected orifices between the outlet ports (92) and the inlet ports (90). The selected orifices at which back pressure is provided include only one (130c) of the pair of parallel constricting orifices (130b, 130c).

公开(公告)号：EP0846609B1

公开(公告)日：2002-07-03

申请号：EP97121653.6

申请日：1997-12-09

申请人： TRW INC.

发明人： Strong, Daniel J.

IPC分类号： B62D5/083

CPC分类号： B62D5/0837 ,  Y10T137/86654

公开(公告)号：EP1132278A2

公开(公告)日：2001-09-12

申请号：EP01105885.6

申请日：2001-03-09

申请人： TRW INC.

发明人： Strong, Daniel J.

IPC分类号： B62D5/083

CPC分类号： B62D5/0837 ,  Y10T137/86654 ,  Y10T137/86662

摘要： A hydraulic fluid control valve (18) for a power steering gear (10) includes first and second relatively rotatable valve members (60, 62) which direct hydraulic fluid to flow between the valve members (60, 62) from inlet ports (70) to outlet ports (92). The valve members (60, 62) have radially opposed lands (71-79, 101-109) and grooves (81-89, 121-129) defining orifices (130) that enlarge and orifices (130) that constrict upon relative rotation of the valve members (60, 62) from neutral positions. A pair of the constricting orifices (130b, 130c) are located in parallel between the inlet ports (90) and the outlet ports(92).
Each of those parallel constricting orifices (130b, 130c) is defined by a corresponding chamfered corner portion of a corresponding land (101, 102). The valve members (60, 62) provide back pressure at selected orifices between the outlet ports (92) and the inlet ports (90). The selected orifices include both constricting orifices (130b, 130c). The means for providing back pressure comprises a third land (102) which is spaced from the pair of lands. The third land (102) defines a third orifice (130d) located in series with the parallel constricting orifices. The third orifice (130d) has a constant size for all relative positions of the first and second valve members (60, 62) through the range of movement of the valve.

公开(公告)号：EP0846608A2

公开(公告)日：1998-06-10

申请号：EP97121650.2

申请日：1997-12-09

申请人： TRW INC.

发明人： Strong, Daniel J.

IPC分类号： B62D5/083

CPC分类号： B62D5/0837 ,  Y10T137/86654

摘要： A hydraulic fluid control valve (18) includes first and second valve members (60, 62) which are rotatable relative to each other about an axis (23). The valve members (60, 62) define hydraulic fluid flow orifices (110) which are spaced apart circumferentially about the axis (23). The orifices (110) are variable in size such that an orifice (110a) enlarges when a pair of adjacent orifices (110b and 110c) constrict upon relative rotation of the valve members from neutral positions. The pair of constricting orifices (110b, 110c) initially constrict at unequal rates, and subsequently constrict at equal rates until reaching fully constricted conditions.

摘要翻译： 液压流体控制阀（18）包括第一和第二阀构件（60,62），所述第一和第二阀构件可围绕轴线（23）相对于彼此旋转。 阀构件（60,62）限定围绕轴线（23）周向间隔开的液压流体流动孔（110）。 所述孔口110的尺寸是可变的，使得当一对相邻孔口（110b和110c）在阀构件相对于中立位置相对旋转时收缩时孔口（110a）扩大。 一对收缩孔（110b，110c）最初以不相等的速率收缩，并且随后以相等的速率收缩直到达到完全收缩的条件。

公开(公告)号：EP0949137B1

公开(公告)日：2004-02-11

申请号：EP99106192.0

申请日：1999-04-09

申请人： TRW INC.

发明人： Strong, Daniel J.

IPC分类号： B62D5/083

CPC分类号： B62D5/083 ,  B62D5/0837 ,  Y10T137/86654

公开(公告)号：EP0854074A3

公开(公告)日：1998-11-18

申请号：EP98100564.8

申请日：1998-01-14

申请人： TRW INC.

发明人： Strong, Daniel J.

IPC分类号： B62D5/083

CPC分类号： B62D5/0837 ,  Y10T137/86654

摘要： A control valve (10) controls fluid flow between a pump (34) and a motor (20) in a hydraulic power assist steering system (12) for a vehicle having steerable wheels. The control valve (10) includes a valve core (40) and a valve sleeve (50) supported for relative rotation. The control valve (10) has an inlet port (80) for receiving fluid from the pump (34) and a return passage (100) for directing fluid from the control valve to the pump (34). The control valve (10) has a first motor port (84) for enabling fluid flow between the control valve and the motor (20). First and second closing orifices (1A-L, 2A-L) are in series between the first motor port (84) and the return passage (100). A third closing orifice (2-L) is located between a second motor port (86) and the return passage (100). The orifice (1A-L) is a relatively high pressure orifice and the orifice (2A-L) is a relatively low pressure orifice. Two high pressure orifices (1-L, 1A-L) spaced on opposite sides of the inlet port (80) remain at least partially open except when the valve is fully turned.

公开(公告)号：EP0846609A3

公开(公告)日：1998-11-18

申请号：EP97121653.6

申请日：1997-12-09

申请人： TRW INC.

发明人： Strong, Daniel J.

IPC分类号： B62D5/083

CPC分类号： B62D5/0837 ,  Y10T137/86654

摘要： A hydraulic fluid control valve (18) for a power steering gear (10) includes first and second relatively rotatable valve members (60, 62) which direct hydraulic fluid to flow between the valve members (60, 62) from inlet ports (70) to outlet ports (92). The valve members (60, 62) have radially opposed lands (71-79, 101-109) and grooves (81-89, 121-129) defining orifices (130) that enlarge and orifices (130) that constrict upon relative rotation of the valve members (60, 62) from neutral positions. A pair of the constricting orifices (130b, 130c) are located in parallel between the inlet ports (90) and the outlet ports (92). Each of those parallel constricting orifices (130b, 130c) is defined by a corresponding chamfered corner portion of a corresponding land (101, 102). The valve members (60, 62) provide back pressure at selected orifices between the outlet ports (92) and the inlet ports (90). The selected orifices at which back pressure is provided include only one (130c) of the pair of parallel constricting orifices (130b, 130c).

摘要翻译： 用于动力转向装置（10）的液压流体控制阀（18）包括第一和第二可相对旋转的阀构件（60,62），其引导液压流体从入口端口（70）在阀构件（60,62）之间流动， 到出口端口（92）。 阀构件60,62具有径向相对的凸台71-79,101-109和凹槽81-89,121-129，它们限定了扩大的孔130以及孔口130， 阀件（60,62）从中立位置开始。 一对节流孔（130b，130c）平行地位于入口端口（90）和出口端口（92）之间。 这些平行收缩孔（130b，130c）中的每一个都由对应的平台（101,102）的相应的倒角部分限定。 阀构件（60,62）在出口端口（92）和入口端口（90）之间的选定孔处提供背压。 选择提供背压的孔口仅包括一对平行收缩孔口130b，130c中的一个（130c）。

公开(公告)号：EP0854074A2

公开(公告)日：1998-07-22

申请号：EP98100564.8

申请日：1998-01-14

申请人： TRW INC.

发明人： Strong, Daniel J.

IPC分类号： B62D5/083

CPC分类号： B62D5/0837 ,  Y10T137/86654

摘要： A control valve (10) controls fluid flow between a pump (34) and a motor (20) in a hydraulic power assist steering system (12) for a vehicle having steerable wheels. The control valve (10) includes a valve core (40) and a valve sleeve (50) supported for relative rotation. The control valve (10) has an inlet port (80) for receiving fluid from the pump (34) and a return passage (100) for directing fluid from the control valve to the pump (34). The control valve (10) has a first motor port (84) for enabling fluid flow between the control valve and the motor (20). First and second closing orifices (1A-L, 2A-L) are in series between the first motor port (84) and the return passage (100). A third closing orifice (2-L) is located between a second motor port (86) and the return passage (100). The orifice (1A-L) is a relatively high pressure orifice and the orifice (2A-L) is a relatively low pressure orifice. Two high pressure orifices (1-L, 1A-L) spaced on opposite sides of the inlet port (80) remain at least partially open except when the valve is fully turned.

摘要翻译： 控制阀（10）控制用于具有可转向轮的车辆的液压助力转向系统（12）中的泵（34）与马达（20）之间的流体流动。 控制阀（10）包括被支撑用于相对旋转的阀芯（40）和阀套（50）。 控制阀（10）具有用于接收来自泵（34）的流体的入口端口（80）和用于将流体从控制阀引导至泵（34）的返回通道（100）。 控制阀（10）具有用于使流体能够在控制阀和马达（20）之间流动的第一马达端口（84）。 第一和第二关闭孔（1A-L，2A-L）串联在第一马达端口（84）和返回通道（100）之间。 第三关闭孔口（2-L）位于第二马达端口（86）与返回通道（100）之间。 孔（1A-L）是相对高压的孔，孔（2A-L）是相对低压的孔。 在进气口（80）的相对侧上间隔开的两个高压孔（1-L，1A-L）保持至少部分打开，除非阀完全转动。

公开(公告)号：EP0846608A3

公开(公告)日：1998-11-18

申请号：EP97121650.2

申请日：1997-12-09

申请人： TRW INC.

发明人： Strong, Daniel J.

IPC分类号： B62D5/083

CPC分类号： B62D5/0837 ,  Y10T137/86654

摘要： A hydraulic fluid control valve (18) includes first and second valve members (60, 62) which are rotatable relative to each other about an axis (23). The valve members (60, 62) define hydraulic fluid flow orifices (110) which are spaced apart circumferentially about the axis (23). The orifices (110) are variable in size such that an orifice (110a) enlarges when a pair of adjacent orifices (110b and 110c) constrict upon relative rotation of the valve members from neutral positions. The pair of constricting orifices (110b, 110c) initially constrict at unequal rates, and subsequently constrict at equal rates until reaching fully constricted conditions.

摘要翻译： 液压流体控制阀（18）包括可围绕轴线（23）相对于彼此旋转的第一和第二阀构件（60,62）。 阀构件（60,62）限定围绕轴线（23）周向间隔开的液压流体流动孔口（110）。 孔（110）的大小是可变的，使得当一对相邻的孔（110b和110c）在阀构件相对于中性位置旋转时收缩时孔（110a）增大。 这对收缩孔（110b，110c）最初以不等的速率收缩，随后以相等的速率收缩直到达到完全收缩的条件。