公开(公告)号：US20040188171A1

公开(公告)日：2004-09-30

申请号：US10806805

申请日：2004-03-23

Applicant: Koyo Seiko Co., Ltd.

Inventor： Masato Mizuhara ,  Satoshi Hatakeyama ,  Tetsuya Murakami ,  Yasuhiro Nakamura

IPC: F16H001/24 ,  F16H055/02

CPC classification number: F16H25/2214 ,  B62D5/0448 ,  Y10T74/19753

Abstract: A first ball circulating hole and a second ball circulating hole for connecting a circulator are bored midway at a screw groove formed on an inner circumference of a ball nut, an intermediate groove path between the first and second ball circulating holes becomes the range of a ball screw track for circulating balls, and other ranges become a first outer track and a second outer track which are not the ball screw track. By making the groove depth of the intermediate groove path deeper than the groove depth of a first groove path of the first outer track and the groove depth of a second groove path of the second outer track, steps are formed between the ball screw track and the two outer tracks. These steps prevent an outflow of the balls from the intermediate groove path to the respective groove paths of the outer tracks.

Abstract translation: 用于连接循环器的第一球循环孔和第二球循环孔在形成于滚珠螺母的内圆周上的螺纹槽的中途钻孔，第一和第二球循环孔之间的中间槽路径成为球的范围 用于循环球的螺旋轨道，以及其它范围变为不是滚珠丝杠轨道的第一外轨道和第二外轨道。 通过使中间槽路径的槽深度比第一外轨道的第一槽路的槽深度和第二外轨道的第二槽路的槽深度更深，在滚珠丝杠轨道和 两条外轨道。 这些步骤防止球从中间槽路径流出到外轨道的相应凹槽路径。

公开(公告)号：US20040182188A1

公开(公告)日：2004-09-23

申请号：US10743317

申请日：2003-12-23

Applicant: Koyo Seiko Co., Ltd.

Inventor： Yasuhiro Nakamura ,  Tomonori Sugiura ,  Souichi Iwasa ,  Tomomasa Machida

IPC: F16H055/18

CPC classification number: B62D5/0409 ,  F16C25/08 ,  F16C27/04 ,  F16C35/077 ,  F16C2326/24 ,  F16H55/24 ,  Y10T74/19623

Abstract: A motor-driven type power steering apparatus includes: a drive gear connected to an output shaft of a motor; a driven gear in mesh with the drive gear, which is connected to a steering unit; a bearing for supporting one end of the drive gear; a support portion in which the bearing is disposed; and a curved leaf spring which has a length larger than a peripheral length of the bearing and fitted between the bearing and the support portion in a resiliently deformed state. The curved leaf spring urges the bearing so that a distance between an axis of the driven gear and an axis of the drive gear decreases.

Abstract translation: 一种电动动力式动力转向装置，包括：与电动机的输出轴连接的驱动齿轮; 与驱动齿轮啮合的从动齿轮，其连接到转向单元; 用于支撑驱动齿轮的一端的轴承; 支撑部，其中设置有所述轴承; 以及弯曲的板簧，其长度大于轴承的周长，并且在弹性变形状态下装配在轴承和支撑部之间。 弯曲的板簧推动轴承，使得从动齿轮的轴线与驱动齿轮的轴线之间的距离减小。