公开(公告)号：US5174407A

公开(公告)日：1992-12-29

申请号：US755463

申请日：1991-09-05

申请人： Yasuo Shimizu ,  Junji Yuzuriha

发明人： Yasuo Shimizu ,  Junji Yuzuriha

IPC分类号： B62D1/16 ,  B62D3/08 ,  B62D5/04 ,  B62D6/02

CPC分类号： B62D1/166

摘要： A variable ratio steering system on a motor vehicle can vary the ratio of the angle through which the steerable road wheels are steered to the angle through which the steering wheel is turned by the driver. The variable ratio steering system includes an input shaft coupled to the steering wheel, a first ball screw mechanism including a first nut threaded through balls over the input shaft, an output shaft coupled to the steerable road wheels, a second ball screw mechanism including a second nut threaded through balls over the output shaft, and a steering angle ratio adjusting mechanism, mechanically coupled to the first and second nuts, for varying the ratio of an axial displacement of the second nut to an axial displacement of the first nut. The steering angle ratio adjusting mechanism includes a swing member swingable in a direction substantially parallel to the input and output shafts about an axis lying in a plane transverse to the input and output shafts, the first and second nuts being coupled to respective different portions of the swing member. The steering angle ratio adjusting mechanism varies the distance between the axis about which the swing member is swingable and at least one of the different portions to which the first and second nuts are coupled.

摘要翻译： 机动车辆上的可变比率转向系统可以改变可转向的车轮转向的角度与驾驶员转向方向盘的角度的比率。 可变比转向系统包括联接到方向盘的输入轴，第一滚珠丝杠机构，包括螺纹穿过输入轴上的滚珠的第一螺母，联接到可转向轮的输出轴;第二滚珠丝杆机构，包括第二滚珠丝杠机构 螺母穿过输出轴上的球，以及转向角比调节机构，机械地联接到第一和第二螺母，用于改变第二螺母的轴向位移与第一螺母的轴向位移的比率。 所述转向角比调节机构包括摆动构件，所述摆动构件在与所述输入和输出轴基本平行的方向上围绕位于与所述输入和输出轴横向的平面中的轴线摆动，所述第一和第二螺母联接到所述输入和输出轴的相应不同部分 摆动构件。 转向角比调节机构改变摆动构件摆动的轴线与第一和第二螺母联接到的不同部分中的至少一个之间的距离。

公开(公告)号：US5284219A

公开(公告)日：1994-02-08

申请号：US826043

申请日：1992-01-27

申请人： Yasuo Shimizu ,  Toshitake Kawai ,  Junji Yuzuriha

发明人： Yasuo Shimizu ,  Toshitake Kawai ,  Junji Yuzuriha

IPC分类号： B62D1/16 ,  B62D3/08 ,  B62D5/22 ,  B62D6/02 ,  B62D9/00

CPC分类号： B62D1/166

摘要： A steering apparatus steers a steerable road wheel in response to turning movement of a steering wheel with a variable steering angle ratio therebetween. The steering apparatus includes a first member operatively coupled to either one of the steerable road wheel and the steering wheel, and a second member operatively coupled to the other of the steerable road wheel and the steering wheel. The first member has a portion engaging the second member at a variable engaging position that is movable on a predetermined path. The steering angle ratio varies when the engaging position varies. When the steering angle ratio varies with the first and second members in their respective neutral positions, the first and second members remain completely still, and their neutral positions are kept in alignment with each other.

摘要翻译： 转向装置响应于其间具有可变转向角比的方向盘的转动运动而引导可转向的车轮。 转向装置包括可操作地联接到可操纵的车轮和方向盘之一的第一构件以及可操作地联接到可转向的车轮和方向盘的另一个的第二构件。 第一构件具有在可在预定路径上移动的可变接合位置处接合第二构件的部分。 当接合位置变化时，转向角比变化。 当转向角比随着第一和第二构件在其各自的中立位置变化时，第一和第二构件保持完全静止，并且它们的中立位置保持彼此对齐。