Abstract: A fitting structure includes an annular seal member; a first fitting member including a first tubular fitting portion having a tubular shape, a first holding portion that contacts the seal member from a first axial end side, and a first restricting portion provided at a position different from a position of the first holding portion; and a second fitting member including a second tubular fitting portion having a tubular shape that is fitted to the first tubular fitting portion from a second axial end side, a second holding portion that contacts the seal member from the second axial end side, and a second restricting portion that contacts the first restricting portion from the second axial end side in a state where the seal member is compressed by a prescribed amount between the first holding portion and the second holding portion.

Abstract: A fitting structure includes an annular seal member; a first fitting member including a first tubular fitting portion having a tubular shape, a first holding portion that contacts the seal member from a first axial end side, and a first restricting portion provided at a position different from a position of the first holding portion; and a second fitting member including a second tubular fitting portion having a tubular shape that is fitted to the first tubular fitting portion from a second axial end side, a second holding portion that contacts the seal member from the second axial end side, and a second restricting portion that contacts the first restricting portion from the second axial end side in a state where the seal member is compressed by a prescribed amount between the first holding portion and the second holding portion.

Abstract: An inner mold having, on the outer surface thereof, corrugations matching the shape of the bellows, and an outer mold having, on the inner surface thereof, corrugations matching the shape of the bellows, are used. An airbag that is previously and at least partially formed into a bellows shape is placed on an outer side of the inner mold so as to cover at least a corrugated part with the airbag. A cylindrical preform comprising unvulcanized rubber and a reinforcement material is placed on the outer side of the airbag. An outer mold is placed on the outer side of the preform. A pressurized fluid is supplied between the inner mold and the airbag so as to inflate the airbag. The preform is vulcanized under heating while being pressed against an inner surface of the outer mold, whereby a reinforced rubber hose is manufactured.

Abstract: A column hole cover is interposed between a circumferential portion of an aperture of a column hole of an instrument panel and a steering gear box capable of being displaced in a predetermined direction. The column hole cover includes a cylindrical main body extended in the predetermined direction. The main body includes a first annular end portion directly or indirectly fixed to the steering gear box, and a second annular end portion. The second end portion is provided with an annular seal. An intermediate portion between the first and second end portions is provided with a expandable/contractible portion capable of being elastically expanded or contracted in the predetermined direction. Irrespective of the displacement of the steering gear box, the annular seal is maintained in an elastic pressure contact against the circumferential portion of the aperture of the instrument panel by a reaction force of the compressed expandable/contractible portion.

Abstract: This invention provides a rubber hose in which an outer rubber layer is laminated by means of extrusion on the outer peripheral surface of an inner rubber layer, wherein: the inner rubber layer is a fluororubber layer 2; the outer rubber layer is a reinforcing yarn-woven silicone rubber layer 1 having reinforcing yarns woven therein; an intermediate rubber layer having an adhesive component for the adhesion with the fluororubber layer is provided between the fluororubber layer 2 and the reinforcing yarn-woven silicone rubber layer 1; and the intermediate rubber layer is an intermediate silicone rubber layer 3 having a hardness lower than those of the reinforcing yarn-woven silicone rubber layer and the fluororubber layer; and a method for manufacturing the rubber hose.

Abstract: A waterproof cover to be interposed between an inner panel and a door trim of an automobile door is obtained by forming a sheet of a resin composition comprising a linear low-density polyethylene (A) and an ethylene-propylene copolymer (B). Further, a waterproof cover to be interposed between an inner panel and a door trim of an automobile door is obtained by bonding a melt-blown nonwoven fabric made of a polyolefin fiber to an inner surface of a sheet being made mainly of a polyolefin. In manufacturing the waterproof cover, it is preferable that the sheet made mainly of the polyolefin is thermoformed by drape-forming to obtain convex portions. The waterproof cover can suppress occurrence of a vibration sound and is excellent in sound absorption and recycling property.

Abstract: There is provided a hose for fuel piping which has an inner layer portion having a single layer of a thermoplastic resin having a low fuel permeability, the inner layer portion has a thickness of at least 0.3 mm at a maximum thickness portion, and an outer layer portion of a thermoplastic elastomer. The inner layer portion is laminated to the outer layer portion by a bond strength of 0.6 kgf/cm or less. In a modification, the inner layer portion of a thermoplastic resin having a low fuel permeability can be coated with a thermoplastic resin.

Abstract: A hose for automotive fuel piping has an inner layer formed of a molding of a terpolymeric fluoro-resin prepared from tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride, so that it can be provided with suitable flexibility. Both the vulcanization composition of an epichlorohydrin rubber or NBR/PVC blend to be disposed outside the inner layer and the vulcanization composition of an NBR rubber or fluororubber to be disposed inside the inner layer contain 1,8-diazablcylco(5.4.0)undecene-7 salts and organophosphonium salts. A satisfactory bonding strength can be attained merely by the vulcanlzation bonding without any surface treatment such as corona discharge on the surface of the inner layer fluororesin.

Abstract: There is provided a hose end structure comprising an inner layer of a low gas permeability material having a radially outwardly extended end portion, and a rubber layer on an inner surface of the radially outwardly extended end portion.

Abstract: A fluid-damped elastomeric bushing has an inner sleeve and an outer sleeve disposed outwardly of the inner sleeve, and two sidewalls extending between the inner sleeve and the outer sleeve and a partition wall to thereby form a pair of fluid compartments. The fluid compartments has a main chamber and a supplemental chamber in communication with the main chamber. An elastic support member extends radially outwardly from the inner sleeve toward the outer sleeve between the side walls to form a first main chamber and a second main chamber.An orifice device is disposed circumferentially along the outer sleeve for communicating the first and second main chambers for causing a fluid in one of the first and second main chambers to be forcibly fed to the other one of the first and second main chambers when a load is applied to the bushing.

Abstract: A fluid-damped elastomeric bushing of the invention comprises an inner sleeve and an outer sleeve in a concentric or eccentric relation, an elastric member provided between the inner and outer sleeve, a plurality of liquid chambers or compartments provided in the central portion of the elastic member with respect to the axial direction of the sleeve, the liquid compartments being arranged along the circumference at specified intervals, and orifices to communicate at least the adjacent liquid compartments with each other. The elastic compartment wall of the elastic member has a portion bent toward the interior of the liquid compartment. A central part of the elastic compartment wall may have its thickness reduced relative to the other part.