公开(公告)号：US11878740B2

公开(公告)日：2024-01-23

申请号：US17603898

申请日：2020-04-02

申请人： MAZDA MOTOR CORPORATION ,  KYB CORPORATION ,  OILES CORPORATION

发明人： Gaku Ikeyama ,  Kazuya Sato ,  Junya Kuwagaki ,  Yoshimitsu Fumimoto ,  Masaki Takahashi ,  Tomonori Taniguchi ,  Takuzo Ito ,  Mitsuhiko Fujikake ,  Hiroki Masuda ,  Hiroyuki Kikuchi ,  Jun Ouchi ,  Kazuhiko Akeda

IPC分类号： B62D3/00 ,  B62D3/12 ,  F16C29/02 ,  F16C35/02

CPC分类号： B62D3/123 ,  F16C29/02 ,  F16C35/02

摘要： 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.

公开(公告)号：US11254347B2

公开(公告)日：2022-02-22

申请号：US16757432

申请日：2018-10-17

申请人： MAZDA MOTOR CORPORATION ,  OILES CORPORATION

发明人： Gaku Ikeyama ,  Junya Kuwagaki ,  Hiroyuki Kikuchi ,  Toshihiko Sekine ,  Noboru Nakagawa ,  Katsunori Saito ,  Kosuke Shimayama

IPC分类号： B62D3/12 ,  B62D7/22 ,  F16C31/02

摘要： Provided is a rack bush capable of reducing an effect on the feeling of a steering operation. A rack bush (1) comprises: a rack bush 1 housed in a cylindrical housing (4), which supports a load applied to a rack bar (5) while allowing movement of the rack bar (5) in the direction of the axis (O) and can be freely expanded and contracted in the radial direction; and elastic rings (3) mounted on the bush body (2). The bush body (2) has mounting grooves (28), which are formed in the circumferential direction on an outer peripheral surface (22) for mounting the elastic ring (3). An axis (P) of the mounting groove (28) are shifted from the axis (O) of the bush body (2). By this arrangement, there are formed an elastic ring protruding part (10), where the elastic rings (3) protrude greatly from the outer peripheral surface (22) of the bush body (2), and an elastic ring embedded part (11), where the elastic rings (3) are embedded in the outer peripheral surface (22) of the bush body (2).

公开(公告)号：US08944689B2

公开(公告)日：2015-02-03

申请号：US14079020

申请日：2013-11-13

申请人： Oiles Corporation

发明人： Kenji Tange ,  Hiroyuki Kikuchi ,  Eiichi Yamashita ,  Masaya Kinjyo

IPC分类号： F16C27/00 ,  F16C33/20 ,  F16C35/02 ,  F16C27/06 ,  F16C33/22 ,  F16C33/10 ,  F16C29/00 ,  F16C29/02 ,  B62D3/12

CPC分类号： F16C33/20 ,  B62D3/12 ,  F16C27/063 ,  F16C29/002 ,  F16C29/02 ,  F16C33/102 ,  F16C33/1065 ,  F16C33/22 ,  F16C35/02 ,  F16C2208/10 ,  F16C2208/32 ,  F16C2208/60 ,  F16C2208/66 ,  F16C2208/78 ,  F16C2240/46 ,  F16C2326/24 ,  F16C2370/12

摘要： A sliding bearing 1 includes a cylindrical bearing body; slits provided in the bearing body; straight grooves provided on an inner side of the bearing body in such a manner as to extend in an axial direction A and respectively disposed between adjacent ones of the slits which are adjacent in a direction B about an axis; a sliding surface which is provided on the inner side of the bearing body and partially severed in the direction B about the axis by the slits to and the straight grooves; a fitting groove provided in an outer surface of the bearing body; and an elastic ring which is fitted in the fitting groove. Each of the straight grooves are closed on an end face side and is open on an end face side.

摘要翻译： 滑动轴承1包括圆柱形轴承体; 设置在轴承体中的狭缝; 在轴承体的内侧设置有沿轴向方向A延伸并且分别设置在沿轴线方向B相邻的相邻狭缝之间的直槽; 滑动面，其设置在所述轴承体的内侧，并且通过所述狭缝与所述直槽在所述轴线方向B上部分切断; 设置在所述轴承体的外表面的配合槽; 以及装配在配合槽中的弹性环。 每个直槽在端面侧封闭，并在端面侧开口。

公开(公告)号：US11548546B2

公开(公告)日：2023-01-10

申请号：US16635184

申请日：2018-07-31

申请人： OILES CORPORATION

发明人： Toshihiko Sekine ,  Katsunori Saito ,  Hiroyuki Kikuchi

IPC分类号： B62D3/12 ,  F16C17/02 ,  F16C25/04 ,  F16C27/06 ,  F16C29/02 ,  F16C29/00 ,  F16H55/28

摘要： 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：US11091190B2

公开(公告)日：2021-08-17

申请号：US16490093

申请日：2018-03-12

申请人： OILES CORPORATION

发明人： Noboru Nakagawa ,  Hiroyuki Kikuchi

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

摘要： 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).