Abstract: 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).

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).

Abstract: 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).

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).

Abstract: A sliding bearing 1 which is interposed between a tube 4 and a rack shaft 7 includes a bearing body 11 and two elastic rings 13 and 14 fitted on an outer surface 12 of the bearing body 11, and the bearing body 11 has slits 26 extending from an end face 22 to this side of an end face 24, slits 27 extending from the end face 24 to this side of the end face 22, an inner surface 33 having a sliding surface 28, and an outer surface 12 on which are formed grooves 34 respectively receiving the elastic rings 13 and 14 and projections 35 and 36 respectively provided on axial end portions 23 and 25 with the grooves 34 disposed therebetween.

Abstract: A sliding bearing 1 which is interposed between a tube 4 and a rack shaft 7 includes a bearing body 11 and two elastic rings 13 and 14 fitted on an outer surface 12 of the bearing body 11, and the bearing body 11 has slits 26 extending from an end face 22 to this side of an end face 24, slits 27 extending from the end face 24 to this side of the end face 22, an inner surface 33 having a sliding surface 28, and an outer surface 12 on which are formed grooves 34 respectively receiving the elastic rings 13 and 14 and projections 35 and 36 respectively provided on axial end portions 23 and 25 with the grooves 34 disposed therebetween.

Abstract: A slide bearing which can be manufactured at low cost is provided. The slide bearing (1) is provided with a cylindrical bearing main body (2) into which a shaft member is inserted, and an elastic ring (3) for urging the bearing main body (2) diametrically inward, the elastic ring (3) being mounted to the bearing main body (2).

Abstract: A slide bearing which can be manufactured at low cost is provided. The slide bearing (1) is provided with a cylindrical bearing main body (2) into which a shaft member is inserted, and an elastic ring (3) for urging the bearing main body (2) diametrically inward, the elastic ring (3) being mounted to the bearing main body (2).

Abstract: A shaft coupling mechanism 1 for an electric power steering apparatus includes a coupling base body 3 coupled to a rotating shaft 2; a coupling base body 5 coupled to a rotating shaft 4; a rotation transmitting member 8 constituted by a pair of rigid rotation transmitting members 6 and 7 disposed between the rotating shaft 2 and the rotating shaft 4 through both coupling base bodies 3 and 5 and adapted to transmit the rotation of the rotating shaft 2 in an R direction about an axis O to the rotating shaft 4; an elastic member 9 interposed between the rotation transmitting members 6 and 7 and coupled to the rotation transmitting members 6 and 7 in such a manner as to be axially superposed on the rotation transmitting members 6 and 7; and a coupling means 10 for coupling the pair of rotation transmitting members 6 and 7 to each other.

Abstract: A sliding bearing 4 includes a bearing base portion 9 having a notched portion 8, a bearing portion 12 having an outer peripheral surface 10 adapted to be brought into contact with an inner peripheral surface 3 of a gear case 2, a pair of bearing portions 14 sandwiching the bearing portion 12 through each of a pair of slits 13 in a direction R about an axis O, and a pair of circular arc portions 17 sandwiching the pair of bearing portions 14 through each of a pair of slits 15 in the direction R about the axis.

Abstract: A bush bearing 7 includes a synthetic resin-made bush 17 having a circumferential groove 16 on an outer peripheral surface 15 thereof; an endless annular elastic member 18 fitted in the circumferential groove 16 of the bush 17; and a positioning means 19 for determining the position of the bush 17 in a B direction with respect to an inner peripheral surface 12 of a gear housing 6.

Abstract: A shaft coupling mechanism 1 for an electric power steering apparatus includes a coupling base body 3 coupled to a rotating shaft 2; a coupling base body 5 coupled to a rotating shaft 4; a rotation transmitting member 8 constituted by a pair of rigid rotation transmitting members 6 and 7 disposed between the rotating shaft 2 and the rotating shaft 4 through both coupling base bodies 3 and 5 and adapted to transmit the rotation of the rotating shaft 2 in an R direction about an axis O to the rotating shaft 4; an elastic member 9 interposed between the rotation transmitting members 6 and 7 and coupled to the rotation transmitting members 6 and 7 in such a manner as to be axially superposed on the rotation transmitting members 6 and 7; and a coupling means 10 for coupling the pair of rotation transmitting members 6 and 7 to each other.

Abstract: A shaft coupling mechanism 1 includes a coupling base body 3 coupled to a rotating shaft 2; a coupling base body 5 coupled to a rotating shaft 4; a pair of rotation transmitting members 6 and 7 interposed between both coupling base bodies 3 and 5 and adapted to transmit the rotation of the rotating shaft 2 in an R direction to the rotating shaft 4 through both coupling base bodies 3 and 5; an intermediate interposed member 8 interposed between the pair of rotation transmitting members 6 and 7; and a coupling means 9 for coupling the pair of rotation transmitting members 6 and 7 to each other.

Abstract: A more durable rotation transmitting member for a coupling directly connected to shafts has: drive-side rotation transmitting cushion to which an input shaft is directly connected; and a hub to which an output shaft is directly connected. Two parallel flat surfaces are formed on the outer periphery of the front end of the input shaft, and a shaft hole receives the front end of the input shaft and is formed in the rotation transmitting cushion. Surfaces of the inner wall of the shaft hole protrude toward the axis (O) to face input shaft front end flat surfaces. Each protruding surface comprises two flat sloped surfaces extending in the direction of the axis (O). When the input shaft starts to rotate, each front end flat of the front end comes into surface contact with one of the protruding surface sloped surfaces which faces the flat surface.

Abstract: A bush bearing includes a bearing body having an inner peripheral surface which is brought into contact with a cylindrical outer peripheral surface of a rotating shaft portion so as to be rotatable in a first direction, a groove provided on an outer peripheral surface of the bearing body so as to extend in the first direction, and an elastic ring fitted on said groove and having a pair of projecting portions and a portion, the pair of projecting portions partially projecting radially outward from the outer peripheral surface of said bearing body in second direction, the portion being provided at positions in the first direction between the pair of projecting portions, and not projecting radially outward from the outer peripheral surface of the bearing body.

Abstract: A sliding bearing 4 includes a bearing base portion 9 having a notched portion 8, a bearing portion 12 having an outer peripheral surface 10 adapted to be brought into contact with an inner peripheral surface 3 of a gear case 2, a pair of bearing portions 14 sandwiching the bearing portion 12 through each of a pair of slits 13 in a direction R about an axis O, and a pair of circular arc portions 17 sandwiching the pair of bearing portions 14 through each of a pair of slits 15 in the direction R about the axis.

Abstract: A shaft coupling mechanism 1 includes a coupling base body 3 coupled to a rotating shaft 2; a coupling base body 5 coupled to a rotating shaft 4; a pair of rotation transmitting members 6 and 7 interposed between both coupling base bodies 3 and 5 and adapted to transmit the rotation of the rotating shaft 2 in an R direction to the rotating shaft 4 through both coupling base bodies 3 and 5; an intermediate interposed member 8 interposed between the pair of rotation transmitting members 6 and 7; and a coupling means 9 for coupling the pair of rotation transmitting members 6 and 7 to each other.

Abstract: A bush bearing 7 includes a synthetic resin-made bush 17 having a circumferential groove 16 on an outer peripheral surface 15 thereof; an endless annular elastic member 18 fitted in the circumferential groove 16 of the bush 17; and a positioning means 19 for determining the position of the bush 17 in a B direction with respect to an inner peripheral surface 12 of a gear housing 6.

Abstract: A shaft coupling mechanism for an electric power steering apparatus includes a coupling base body coupled to a rotating shaft on a side of an electric motor; a coupling base body coupled to a steering shaft; rotation transmitting members interposed between both coupling base bodies and adapted to transmit the rotation of the rotating shaft in an R direction to the steering shaft through both coupling base bodies; an intermediate interposed member interposed between the coupling base bodies; and a coupling means for coupling the rotation transmitting members to each other.

Abstract: A more durable rotation transmitting member for a coupling directly connected to shafts has: drive-side rotation transmitting cushion to which an input shaft is directly connected; and a hub to which an output shaft is directly connected. Two parallel flat surfaces are formed on the outer periphery of the front end of the input shaft, and a shaft hole receives the front end of the input shaft and is formed in the rotation transmitting cushion. Surfaces of the inner wall of the shaft hole protrude toward the axis (O) to face input shaft front end flat surfaces. Each protruding surface comprises two flat sloped surfaces extending in the direction of the axis (O). When the input shaft starts to rotate, each front end flat of the front end comes into surface contact with one of the protruding surface sloped surfaces which faces the flat surface.