公开(公告)号：US5927429A

公开(公告)日：1999-07-27

申请号：US90692

申请日：1998-06-05

申请人： Mitsutaka Sugino ,  Hiroshi Ichimura ,  Masahiro Ogawa ,  Tsuto Sasaki ,  Tetsuya Matsumoto ,  Tsutomu Tatsuishi

发明人： Mitsutaka Sugino ,  Hiroshi Ichimura ,  Masahiro Ogawa ,  Tsuto Sasaki ,  Tetsuya Matsumoto ,  Tsutomu Tatsuishi

IPC分类号： B62D3/12 ,  B62D5/04 ,  B62D5/22 ,  B62D7/22

CPC分类号： B62D5/0448 ,  B62D3/12 ,  B62D7/226

摘要： An electric power steering apparatus for applying an auxiliary torque generated in proportion to a steering torque, to a rack shaft to thereby reduce the steering torque. The rack shaft has at one end thereof rack teeth for meshing with a pinion. A rack guide mechanism is provided at the rack shaft one end oppositely from the rack teeth, for urging the rack shaft to the pinion. At the other end of the rack shaft, a screw portion and a ball screw mechanism are provided. A bush is provided for supporting an intermediate portion of the rack shaft to thereby restrict the bending of the intermediate portion beyond a predetermined value when an external force is applied to the rack shaft ends thereby bending the rack shaft intermediate portion. As a result, the vibration of the rack shaft and hence a steering wheel can be minimized.

摘要翻译： 一种用于将与转向转矩成比例地产生的辅助转矩施加到齿条轴的电动助力转向装置，从而减小转向转矩。 齿条轴的一端具有与小齿轮啮合的齿条齿。 齿条引导机构设置在齿条轴的与齿条齿相反的一端，用于将齿条轴推向小齿轮。 在齿条轴的另一端设有螺纹部和滚珠丝杠机构。 设置有用于支撑齿条轴的中间部分的衬套，从而当外部力施加到齿条轴端部时由此将中间部分的弯曲限制在预定值以上，从而弯曲齿条轴中间部分。 结果，可以使齿条轴和因此方向盘的振动最小化。

公开(公告)号：US4923170A

公开(公告)日：1990-05-08

申请号：US262395

申请日：1988-10-25

申请人： Tokuro Takaoka ,  Tsuto Sasaki ,  Yukio Kobayashi ,  Koichi Saito ,  Satoshi Hamano

发明人： Tokuro Takaoka ,  Tsuto Sasaki ,  Yukio Kobayashi ,  Koichi Saito ,  Satoshi Hamano

IPC分类号： B62D5/087 ,  G05D16/18

CPC分类号： B62D5/087 ,  G05D16/18

摘要： A hydraulic pressure control valve comprises a valve body having a slide bore of a circular cross-section and an inlet port and an outlet port opened into an inner surface of the slide bore at axially spaced apart points, and a valve spool slidably received in the valve body for axially sliding movement and defining, by cooperation with the valve body, a variable orifice for controlling the degree of communication between the inlet and outlet ports. In the hydraulic pressure control valve, a smaller diameter portion defining an annular oil passage between an inner surface of the slide bore is provided on the valve spool coaxially with the slide bore to define the variable orifice, and has an outside diameter set constant over axially entire length. This facilitates the dimensional control of the variable orifice, so that the variation in property of the variable orifice for every hydraulic pressure control valve may be easily suppressed.

摘要翻译： 液压控制阀包括具有圆形横截面的滑动孔的阀体和在轴向间隔开的位置处开口于滑动孔的内表面的入口和出口，以及可滑动地容纳在所述滑阀中的阀柱 阀体用于轴向滑动运动，并且通过与阀体配合来限定用于控制入口和出口之间的连通程度的可变孔口。 在液压控制阀中，在滑阀孔同轴地设置在滑阀内表面之间限定环形油通道的较小直径部分，以限定可变孔口，并且具有在轴向上恒定的外径 全长。 这有助于可变孔的尺寸控制，使得可以容易地抑制每个液压控制阀的可变孔的性质变化。

公开(公告)号：US5058626A

公开(公告)日：1991-10-22

申请号：US627909

申请日：1990-12-17

申请人： Tokuro Takaoka ,  Tsuto Sasaki ,  Yukio Kobayashi ,  Kouichi Saitoh ,  Satoshi Hamano ,  Toshiya Tatumoto

发明人： Tokuro Takaoka ,  Tsuto Sasaki ,  Yukio Kobayashi ,  Kouichi Saitoh ,  Satoshi Hamano ,  Toshiya Tatumoto

IPC分类号： B62D5/07 ,  B62D5/087 ,  B62D6/02 ,  G05D16/18 ,  F15B13/02

CPC分类号： B62D5/087 ,  B62D6/02 ,  G05D16/18 ,  Y10T137/8663 ,  Y10T137/8671

摘要： A hydraulic pressure control valve includes a valve body having a slide bore with a circular cross-section, an inlet port opened in an inner surface of the slide bore, a control pressure port and an outlet port at axially spaced-apart distances in this sequence; a valve spool axially slidably fitted in the valve body; and a first variable orifice and a second variable orifice both formed between the valve body and the valve spool. The first variable orifice controls the degree of communication between the inlet port and the control pressure port, and the second variable orifice controls the degree of communication between the control pressure port and the outlet port. In this hydraulic pressure control valve, the valve spool has smaller diameter portions coaxially formed therein to define annular oil passages between the inner surface of the slide bore and the valve spool and each smaller diameter portion has an outer diameter set uniformly over the axially entire length thereof.

摘要翻译： 液压控制阀包括具有圆形横截面的滑动孔的阀体，在该滑动孔的内表面中敞开的入口，在该顺序上轴向间隔开的距离处的控制压力端口和出口 ; 轴向可滑动地装配在阀体中的阀芯; 以及在阀体和阀芯之间形成的第一可变孔口和第二可变孔口。 第一可变节流孔控制入口和控制压力端口之间的连通程度，第二可变孔控制控制压力端口和出口之间的连通程度。 在该液压控制阀中，阀芯具有同轴地形成在其中的较小直径部分，以在滑动孔的内表面和阀芯之间限定环形油通道，并且每个较小直径部分具有均匀地设置在轴向全长上的外径 其中。