公开(公告)号：US20210309284A1

公开(公告)日：2021-10-07

申请号：US17261484

申请日：2019-07-16

Applicant: NSK LTD.

Inventor： Tatsuya ISHII

IPC: B62D3/12 ,  F16C29/02

Abstract: A rack housing has a concave portion first inclined surface 45 on the inner side surface of an engaging concave portion located on the opening side that is inclined in a direction toward the back side while going outward in the radial direction. The rack bush has a convex portion first inclined surface on the outer side surface of an engaging convex portion that faces the concave portion first inclined surface, and that is inclined in a direction toward the back side while going outward in the radial direction. The convex portion first inclined surface is pressed outward in the radial direction against the concave portion first inclined surface, and the other outer side surface of the engaging convex portion facing the back side is pressed in the axial direction against the other inner side surface of the engaging concave portion facing the opening side.

公开(公告)号：US20150298725A1

公开(公告)日：2015-10-22

申请号：US14442780

申请日：2013-07-26

Applicant: NSK Ltd.

Inventor： Takefumi KICHIKAWA ,  Takeshi MURAKAMI ,  Takeshi YAMAMOTO ,  Atsushi MAEDA ,  Tatsuya ISHII

IPC: B62D5/04 ,  B62D6/10

CPC classification number: B62D5/0403 ,  B62D5/0409 ,  B62D6/10 ,  F16C19/06 ,  F16C35/042 ,  F16C35/067 ,  F16C2326/24

Abstract: According to an electric power steering system of the present invention, a bearing support housing member supporting at least one rolling bearing is preferably formed of a resin which can be continuously used in a temperature environment ranging from −40° C. to 85° C., which is made of a resin composition containing a fibrous filler ranging from 30% by mass to 55% by mass, which has a coefficient of linear expansion ranging from 1.2×10−5 to 5.5×10−5 (1/° C.) in both a fiber direction and a perpendicular direction to the fiber direction in a temperature range from 23° C. to 80° C., and which has a coefficient of water absorption equal to or less than 4% when being left in water at a temperature of 23° C. for 24 hours.

Abstract translation: 根据本发明的电动助力转向系统，支撑至少一个滚动轴承的轴承支撑壳体优选地由可在-40℃至85℃的温度环境中连续使用的树脂形成。 其由线性膨胀系数为1.2×10 -5〜5.5×10 -5（1 /℃）的含有30质量％〜55质量％的纤维状填料的树脂组合物构成。 ）在纤维方向和垂直于纤维方向的方向上，在23℃至80℃的温度范围内，并且当水分在水中时具有等于或小于4％的吸水系数 温度23℃24小时。

公开(公告)号：US20210309283A1

公开(公告)日：2021-10-07

申请号：US17267582

申请日：2019-08-01

Applicant: NSK LTD.

Inventor： Tatsuya ISHII

IPC: B62D3/12 ,  F16H57/02 ,  F16H19/04 ,  F16C29/02

Abstract: The rack housing has an engaging concave section having a bottom surface configured by a bottom inclined surface that is inclined in a direction outward in the radial direction toward the opening side of the rack housing, and the rack bush comprises an engaging convex section having a top surface configured by a top inclined surface that is inclined in a direction outward in the radial direction toward the opening side of the rack housing. The top inclined surface is pressed against the bottom inclined surface toward outside in the radial direction, and the outside surface of the engaging convex section facing the opening side of the rack housing is pressed against the inner side surface of the engaging concave section facing the inner side of the rack housing.

公开(公告)号：US20150298724A1

公开(公告)日：2015-10-22

申请号：US14387700

申请日：2013-10-28

Applicant: NSK LTD.

Inventor： Tatsuya ISHII ,  Takeshi YAMAMOTO ,  Seiichi MORIYAMA

IPC: B62D5/04

CPC classification number: B62D5/0403 ,  B62D5/0409

Abstract: An electric power steering apparatus has a first rolling bearing and a second rolling bearing rotatably supporting an output shaft. The first rolling bearing is provided between an inner peripheral surface of a through-hole of a gear housing and an outer peripheral surface of the output shaft. The second rolling bearing is provided between an inner peripheral surface of an intermediate plate and the outer peripheral surface of the output shaft. The intermediate plate has an outer peripheral portion supported and fixed in an opening portion of the gear housing.

Abstract translation: 电动助力转向装置具有第一滚动轴承和可旋转地支撑输出轴的第二滚动轴承。 第一滚动轴承设置在齿轮壳体的通孔的内周面与输出轴的外周面之间。 第二滚动轴承设置在中间板的内周面与输出轴的外周面之间。 中间板具有支撑并固定在齿轮壳体的开口部分中的外周部分。