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1. 发明授权

US5107752A Rotary gate valve for hydraulic servo-assisted steering systems 失效
标题翻译：液压伺服转向系统的旋转阀门
公开(公告)号：US5107752A
公开(公告)日：1992-04-28
申请号：US328035
申请日：1989-01-31
申请人： Dieter Elser , Helmut Hetzel , Walter Kogel
发明人： Dieter Elser , Helmut Hetzel , Walter Kogel
IPC分类号： B62D5/083 , B62D6/02
CPC分类号： B62D6/02 , B62D5/083 , Y10T137/86662
摘要： An auxiliary power steering mechanism has a rotary valve that includes a rotary member integrally formed with the steering shaft of the vehicle and a fixed valve sleeve integrally formed with a threaded spindle. The rotary member contains a plurality of radial hydraulic fluid return bores arranged in two parallel rows with the bores of each row being spaced longitudinally. A guide groove in the valve sleeve, which is connected with a power cylinder, is assigned to each row of bores. An additional radial return bore is arranged in the middle of the two rows of bores and has a fixed residual cross section. All of the return bores include flat portions of different circumferential lengths to control the build-up of pressure in a surge chamber. The hydraulic return cross section produced by the bores is varied by a piston valve arranged in a concentric bore in the rotary member. The piston valve can be adjusted as a function of a pressure in accordance with speed. Operating forces at the steering wheel that are synchronized with the drive situation at the moment are obtained by changing the cross section of the row of bores in an open operating condition at that moment for setting the pressure of the rotary valve.
摘要翻译： PCT No.PCT / EP87 / 00523 Sec。 371日期1989年1月31日 102（e）日期1989年1月31日PCT提交1987年9月16日PCT公开号第WO88 / 01958号公报 1988年3月24日。辅助动力转向机构具有旋转阀，该旋转阀包括与车辆的转向轴一体形成的旋转部件和与螺纹心轴一体形成的固定阀套筒。旋转构件包括多个排列成两排平行的径向液压回流孔，每排的孔纵向隔开。与动力缸连接的阀套中的引导槽被分配给每排孔。在两列孔的中间设有一个额外的径向回流孔，并具有固定的剩余横截面。所有返回孔包括具有不同圆周长度的平坦部分，以控制缓冲室中的压力积聚。由孔产生的液压回流截面由设置在旋转构件中的同心孔中的活塞阀改变。可以根据速度将活塞阀调节为压力的函数。通过在该时刻的打开操作条件下改变钻孔排的横截面来获得与转向阀同步的方向盘上的操作力，以设定旋转阀的压力。

2. 发明授权

US5086687A Rotary slide valve for hydraulic auxiliary power steering 失效
标题翻译：用于液压辅助动力转向的旋转滑阀
公开(公告)号：US5086687A
公开(公告)日：1992-02-11
申请号：US328036
申请日：1989-01-31
申请人： Dieter Elser , Helmut Hetzel , Walter Kogel
发明人： Dieter Elser , Helmut Hetzel , Walter Kogel
IPC分类号： B62D5/083 , B62D6/02
CPC分类号： B62D5/083 , B62D6/02 , Y10T137/86662
摘要： An auxiliary power steering mechanism with a working piston installed in the steering gear has a rotary valve comprising a rotary member and a fixed valve sleeve. A piston valve is inserted in a bore provided in the rotary member. The piston valve is connected with an adjustment device, such as an electromagnet, via a tube supported by a torsion bar. The electromagnet adjusts the piston valve as a function of various influencing variables such as speed, and controls the condition of a plurality of hydraulic fluid flow return bores arranged in longitudinally spaced relation in the rotary member for noise-free control of the build-up of pressure in a surge chamber that is active at the moment. The bores have flat portions of different contours and circumferential lengths.
摘要翻译： PCT No.PCT / EP87 / 00524 Sec。 371日期1989年1月31日 102（e）日期1989年1月31日PCT提交1987年9月16日PCT公开号第WO88 / 01959号公报日期为1988年3月24日。具有安装在舵机中的工作活塞的辅助动力转向机构具有包括旋转构件和固定阀套筒的旋转阀。活塞阀插入设置在旋转构件中的孔中。活塞阀通过由扭杆支撑的管与诸如电磁体的调节装置连接。电磁体根据各种影响变量（如速度）来调节活塞阀，并且控制在旋转部件中以纵向间隔的关系布置的多个液压流体回流孔的状态，以便无噪声地控制积聚此时激活的电涌室内的压力。孔具有不同轮廓和圆周长度的平坦部分。

3. 发明授权

US4848402A Rotary slide valve for hydraulic auxiliary power steerings 失效
标题翻译：液压辅助动力转向旋转滑阀
公开(公告)号：US4848402A
公开(公告)日：1989-07-18
申请号：US946710
申请日：1986-12-04
申请人： Dieter Elser , Helmut Hetzel , Manfred Keller
发明人： Dieter Elser , Helmut Hetzel , Manfred Keller
IPC分类号： B62D5/083 , F16K11/085 , F16K47/04
CPC分类号： B62D5/083 , F16K47/045 , Y10T137/86654 , Y10T137/86662
摘要： A rotary valve assembly having a valve sleeve and a rotary valve core are provided with flow control grooves having control edges distributed over the peripheries for regulation of pressurized fluid. Such pressure regulation occurs at the control edges forming sets of three gaps in each rotational direction of the steering control valve. One of such gaps forms a relatively deep return flow passage that is fully opened in the neutral position of the valve assembly and two throttle gaps on opposite sides thereof that are relatively shallow for restricted return flow. Rotational displacement of the valve core initially effects pressure regulation through the intermediate deep gap within a low pressure range. Continued rotation of the rotary valve core effects pressure regulation within a high pressure range by return flow through the other gaps conducting restricted flow, to both continue pressure regulation within the high pressure range and suppress hissing noises developed in response to entry of pressurized fluid.
摘要翻译： PCT No.PCT / EP86 / 00181 Sec。一九八六年十二月四日 102（e）日期1986年12月4日PCT提交1986年3月26日PCT公布。出版物WO86 / 06228 PCT 日本1986年10月23日。具有阀套和旋转阀芯的旋转阀组件设置有流量控制槽，其具有分布在周边上的控制边缘，用于调节加压流体。这种压力调节发生在控制边缘，在转向控制阀的每个旋转方向上形成三组间隙。这种间隙之一形成相对较深的回流通道，其在阀组件的中间位置处完全打开，并且在其相对侧上的两个节气门间隙对于受限回流而相对较浅。阀芯的旋转位移最初通过中间深度间隙在低压范围内实现压力调节。旋转阀芯的继续旋转通过返回流动通过其它间隙进行限制流动来在高压范围内实现压力调节，以在高压范围内继续压力调节，并且抑制响应加压流体进入而产生的嘶嘶声。

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