Oiles Corporation

Jtekt Corporation

Hidetoshi Kaida

Eiji Oki

Kouhei Kurose

Masahiko Hirose

Shuichi Kubota

Takahiro Tanaka

Yoshihide Ohara

Masaaki Hashimoto

Masanori Takahashi

Takashi Horiguchi

Masao Shimura

Yoshiro Kuzumi

Yasuhiko Koda

Hideto Arigaya

Yukito Matsumoto

Shunya Oda

Koichi Inagaki

Tsuyoshi Suematsu

Shoichiro Fujita

Provided are a method for determining the disposition position of a spherical joint for coupling exhaust pipes to each other in an exhaust system, and an exhaust system, which enable engine vibrations to be more effectively damped. In the present invention, strain gauges are attached at a plurality of locations in an exhaust system (), simulated vibrations which simulate engine vibrations are imparted to the upstream-side end of the exhaust system (), and bending strain is measured at each strain gauge. On the basis of the bending strain measured at each strain gauge, detected is a position at which generated is a bending moment that is equal to or greater than or equal to a torque amount which generates a maximum static friction force between a spherical inner-circumferential surface () and a spherical outer-circumferential surface () of a spherical joint () which come into contact with each other, and the detected position is determined to be the disposition position for the spherical joint ().

Method of determining arrangement position of spherical joint for connecting exhaust pipes to each other in exhaust system, and exhaust system

In a spherical annular seal member, a spherical annular base memberis constructed so as to be provided with structural integrity as a heat-resistant materialand a reinforcing memberare compressed to each other and intertwined with each other. In an outer layer, the heat-resistant material, a sintered solid lubricant constituted by a lubricating composition, and the reinforcing membermade from a metal wire net are compressed such that the sintered solid lubricant and the heat-resistant materialare filled in meshes of the metal wire net of the reinforcing member, and the solid lubricant, the heat-resistant material, and the reinforcing memberare integrated in mixed form, an outer surfaceof that outer layerbeing thus formed into a smooth surfacein which a surfaceconstituted by the reinforcing memberand a surfaceconstituted by the sintered solid lubricant are present in mixed form.

Spherical annular seal member and method of manufacturing the same

A spherical exhaust pipe jointincludes an outer case, an inner case, a seal bodyfacing an inner peripheral surfaceof the outer caseand an outer peripheral surfaceof the inner case, a seal bodyfacing the inner peripheral surfaceof the outer caseand the outer peripheral surfaceof the inner case, and a wave springwhich is disposed between the outer caseand the inner caseto resiliently urge the seal bodiesandin an axial direction toward one of the outer caseand the inner case

Spherical exhaust pipe joint

A spherical annular seal memberincludes a spherical annular base memberdefined by a cylindrical inner surface, a partially convex spherical surface, and annular end faces, as well as an outer layerformed integrally on the partially convex spherical surface. The spherical annular base memberincludes a reinforcing membermade from a metal wire netand a heat-resistant materialcontaining expanded graphite and a phosphate and integrated with the reinforcing memberin mixed form, and the outer layer includes the heat-resistant materialcontaining the expanded graphite and the phosphate and the reinforcing membermade from the metal wire netintegrated with the heat-resistant materialin mixed form, the expanded graphite in the heat-resistant materialhaving an ash content of not more than 0.1% by mass and a graphite content of not less than 99.7% by mass.

Spherical annular seal member

A spherical annular seal memberincludes a spherical annular base memberdefined by annular end facesand, and an outer layerformed integrally on the spherical annular base member. The spherical annular base memberincludes a reinforcing membermade from a metal wire net and a heat-resistant materialcontaining compressed expanded graphite. The outer layeris comprised of a base layerwhich includes a reinforcing membermade from a metal wire net and compressed and a heat-resistant materialcontaining expanded graphite, compressed in such a manner as to fill meshes of the metal wire net of the reinforcing member, and having a surfacewhich forms an outer-layer intermediate layer surfacetogether with the surfaceof the reinforcing member, and of a heated sliding layerof a molten fluororesin composition formed on the base layerat the outer-layer intermediate layer surface. The surfaceof the outer layerexposed to the outside is constituted by a smooth surfaceof the heated sliding layer

A bush bearingis comprised of: a synthetic resin-made bushincluding a flexible semi-split cylindrical bodyhaving an abutment portionfor slidably abutting against a rack shaftand including a flexible open-ended annular bodywhich has a portionformed integrally at one end face of the semi-split cylindrical bodyand circular arc-shaped extended portionsandwhose distal endsandare opposed to each other with a clearancein a circumferential direction R; and an elastic memberincluding an elastic bodyfor abutting against an outer surfaceof the semi-split cylindrical bodyand retained portionsandwhich are respectively retained by both end portionsand

Bush bearing and rack-and-pinion type steering apparatus for automobile using the same

A bearing mechanismincludes a housinghaving a cylindrical inner peripheral surface, a rack shaftinserted and secured in the housingand having a cylindrical outer peripheral surface, and a sliding bearinginterposed between the inner peripheral surfaceof the housingand the outer peripheral surfaceof the rack shaft

Bearing mechanism having sliding bearing

A rack-and-pinion type steering apparatusincludes a gear casemade of aluminum or an aluminum alloy and having a hollow portion; a steering shaftrotatably supported by the gear casethrough rolling bearingsand; a pinionwhich is rotatably supported in the gear casethrough the steering shaft; a rack baron which rack teethmeshing with the pinionare formed; and a rack guidewhich is disposed in the hollow portioninside the gear caseand supports the rack barslidably with respect to its moving direction A.

Rack guide and rack-and-pinion type steering apparatus using the same

A rack-and-pinion type steering apparatusincludes a housinghaving a cylindrical holding holein its interior; a pinionwhich is disposed in the housingrotatably in a direction R about an axis O by means of bearingsand; a rack barwhich has rack teethmeshing with the pinionand is movable in a direction A; a rack guidewhich is disposed in the holding holewithin the housingmovably in a direction C, and which guides and supports the rack barmovably in the direction A; and a coil springfor resiliently pressing the rack teethof the rack baragainst the pinionby means of the rack guide

Rack-and-pinion type steering apparatus

A bush bearing includes a synthetic resin-made bush having a circumferential groove on its outer peripheral surface; an endless annular elastic member fitted in the circumferential groove of the bush; and a positioning structure for determining the position of the bush in a B direction with respect to an inner peripheral surface of a gear housing.

A sliding bearing for a steering column includes: a cylindrical bearing body; flat surfaces formed integrally on an inner peripheral surface of the bearing body; first slits extending from one end face of the bearing body to this side of the other end face of the bearing body; second slits extending from this side of the other end face of the bearing body to the one end face of the bearing body; grooves formed in an outer peripheral surface of the bearing body; and elastic rings which are respectively fitted in the grooves in such a manner as to project from the outer peripheral surface of the bearing body and to reduce the diameter of the bearing body.

Growing community of inventors

Kanagawa, Japan

Hidetoshi Kaida