公开(公告)号：US20200346681A1

公开(公告)日：2020-11-05

申请号：US16635184

申请日：2018-07-31

Applicant: OILES CORPORATION

Inventor： Toshihiko SEKINE ,  Katsunori SAITO ,  Hiroyuki KIKUCHI

IPC: B62D3/12 ,  F16C17/02 ,  F16C25/04 ,  F16C29/02

Abstract: To reduce the effect of a steering operation on feeling. A rack bush comprises: a bush body that is accommodated in a cylindrical housing, supports a load exerted on a rack bar while allowing the rack bar to move in the direction of an axial center O, and can be extended and retracted in a radial direction; and an elastic ring mounted on the bush body. The bush body has a mounting groove for mounting the elastic ring, the mounting groove being formed peripherally in an outer peripheral surface, and the mounting groove having a large-diameter part where the circumferential radius of a groove bottom is a first radius r1, and a small-diameter part where said radius is a second radius r2 that is less than the first radius r1. This configuration allows the formation of an elastic ring protruding part, in which the elastic ring protrudes greatly from the outer peripheral surface of the bush body, and an elastic ring embedded part, in which the elastic ring is embedded in the outer peripheral surface of the bush body.

公开(公告)号：US20200283055A1

公开(公告)日：2020-09-10

申请号：US16490093

申请日：2018-03-12

Applicant: OILES CORPORATION

Inventor： Noboru NAKAGAWA ,  Hiroyuki KIKUCHI

IPC: B62D3/12 ,  F16H19/04

Abstract: The objective of the present invention is to reduce the impact of production variability in a radius of curvature of a rear surface of a rack bar, for example, while enlarging a region of contact with the rack bar. A concave surface (330) is used as a rack guide seat (32) sliding surface (33). In a YZ cross section perpendicular to an axial direction of a rack bar, the concave surface (330) includes: a pair of first arcuate surfaces (331A, 331B) which are disposed on a peripheral edge side (320) of the sliding surface (33), from two positions of contact TA, TB with a rack bar rear surface (22), the positions of contact TA, TB having line symmetry with respect to a straight Line O3 joining a center O of a rack bar (20) with a bottom portion center C of the sliding surface (33), and which have line symmetry with respect to the straight Line O3; and a pair of second arcuate surfaces (332A, 332B) which are disposed on a bottom portion side (321) of the sliding surface (33), from the positions of contact TA, TB, and which have line symmetry with respect to the straight Line O3. With regard to gaps to the rack bar rear surface (22) in positions separated by the same distance from the positions of contact TA, TB, the gaps from the first arcuate surfaces (331A, 331B) are greater than the gaps from the second arcuate surfaces (332A, 332b).

公开(公告)号：US20170037952A1

公开(公告)日：2017-02-09

申请号：US15303825

申请日：2015-04-02

Applicant: OILES CORPORATION

Inventor： Hiroyuki KIKUCHI ,  Yoshikazu SAKAIRI

IPC: F16H55/28 ,  F16H19/04 ,  B62D3/12

CPC classification number: F16H55/283 ,  B62D3/123 ,  F16H19/04 ,  F16H55/28

Abstract: A rack-and-pinion type steering apparatus 1 includes a pinion 2 which is rotatable in an R direction; a rack bar 4 which has rack teeth 3 meshing with the pinion 2 and is linearly movable in a sliding direction A; a gear box 5 for rotatably supporting the pinion 2 in the R direction; a rack guide 6 for slidably supporting the rack bar 4; and a resilient means 7 for pressing the rack guide 6 toward the pinion 2.

Abstract translation: 齿条 - 小齿轮型转向装置1包括可沿R方向旋转的小齿轮2; 齿条4，其具有与小齿轮2啮合的齿条齿3，并且可沿滑动方向A线性移动; 齿轮箱5，用于沿R方向可旋转地支撑小齿轮2; 用于可滑动地支撑齿条4的齿条引导件6; 以及用于将齿条引导件6朝向小齿轮2按压的弹性装置7。

公开(公告)号：US20220194461A1

公开(公告)日：2022-06-23

申请号：US17603898

申请日：2020-04-02

Applicant: MAZDA MOTOR CORPORATION ,  KYB CORPORATION ,  OILES CORPORATION

Inventor： Gaku IKEYAMA ,  Kazuya SATO ,  Junya KUWAGAKI ,  Yoshimitsu FUMIMOTO ,  Masaki TAKAHASHI ,  Tomonori TANIGUCHI ,  Takuzo ITO ,  Mitsuhiko FUJIKAKE ,  Hiroki MASUDA ,  Hiroyuki KIKUCHI ,  Jun OOUCHI ,  Kazuhiko AKEDA

IPC: B62D3/12 ,  F16C35/02 ,  F16C29/02

Abstract: A clearance is created between an inner circumference of a bushing main body (2) which surrounds a rack (5) across a row of rack gear teeth (50) and an outer circumference of the rack (5), and two supporting surfaces (21A, 21B) which face each other with a bushing main body axis O therebetween and a supporting surface (21C) which faces a back surface of the rack (5), each extending along an x-axis direction, are formed on the inner circumference of the bushing main body (2). The rack (5) in a neutral state is supported by the two supporting surfaces (21A, 21B) so as to be displaceable along a z-axis direction, and the rack (5) in operation is stably supported by the three supporting surfaces (21A-21C) at three places. A groove bottom position of an annular elastic member attachment groove (24), which is formed on an outer circumference of the bushing main body (2), is offset toward the support surface (21B) only in an area on a support surface (21B) side from the bushing main body axis O, and therefore an elastic ring (3) attached to the elastic member attachment groove (24), protrudes above an outer circumferential surface of the bushing main body (2), but only in the area on the support surface (21B) side from the bushing main body axis O.