Tokai Rubber Industries, Ltd.

Toyota Jidosha Kabushiki Kaisha

Other

Tokai Rubber Ind., Ltd.

Tokai Chmical Industries, Ltd.

Shinji Miyakawa

Yoshikazu Tsukamoto

Michio Ito

Takanobu Nanno

Haruhiko Tanahashi

Masato Tanabe

Kouji Sawada

Satoshi Uematsu

Yasuhiro Miya

Juro Ueda

In a process for producing a polyurethane-foam product molded integrally with an insert, wherein a molded body, including a substrate and a polyurethane-foam molded body being molded integrally with the substrate, is produced, the substrate being disposed in an expansion-molding mold as the insert, a fine groove-shaped polyurethane-foam relief groove and a polyurethane-foam adjuster are formed in an end of the substrate and/or a mold surface of the expansion-molding mold which contacts with the substrate. The relief groove communicates with a cavity of the mold. The adjuster communicates with the relief groove, and has a volume larger than that of the relief groove. The relief groove and the adjuster can control the pressure exerted within the cavity. Polyurethane foam, which is formed by the relief groove and the adjuster, adheres to molded product. Therefore, it is possible to obviate the deflashing operation. An expansion-molding mold therefor is also disclosed.

Process for producing polyurethane-foam product molded integrally with insert and expansion-molding mold for the same

A soundproofing cover absorbs noises, produced by a vehicle. It is fastened to a plurality of vehicle-side installation portions, and includes a cover body, composed of a polymer foamed substance, and a plurality of brackets, held integrally to the cover body. The respective brackets have an installation portion and a holding portion. The installation portion is to be fastened to the vehicle-side installation portions. The holding portion is held and fastened integrally to the cover body. At least two of the installation portions constitute a datum bracket, connected by one of the holding portions shared commonly. The positioning accuracy can be improved in the installation of the soundproofing cover to the vehicle-side installation portions so that the installation operability can be upgraded. In addition, the increment of the weight can be kept minimum so that the lightweighting requirement can be satisfied.

Soundproofing cover for vehicle

A soundproof cover includes a sealing layer, a sound insulation layer, and a vibration inhibition layer. The sound insulation layer has a peripheral portion, is to be disposed so as to contact at least the peripheral portion with a noise source, and exhibits elasticity. The sound insulation layer is formed as a hard plate shape, has an installation portion to be fastened to the noise source, and is disposed so as to cover the sealing layer. The vibration inhibition layer is disposed on at least a part of an interface between the sealing layer and the sound insulation layer so as to adhere to the sound insulation layer, and inhibits the sound insulation layer from vibrating.

Soundproof cover

In an elastic coupling including first fixtures, second fixtures, a reinforcing member in a loop-like shape and an elastic covering member, the reinforcing member is made by connecting one longitudinal end and the other longitudinal end of a stranded wire. The stranded wire is formed by twisting the appropriate number of metallic wires. Since the metallic wires do not shrink by heat, the metallic wires do not shrink during the vulcanization. Thus, the variety of the spring constant of the elastic coupling can be reduced. Also, since the metallic wires are very strong, the number of winding the stranded wire around the first fixtures and the second fixtures can be reduced and therefore the size of the elastic coupling can be prevented from increasing.

Elastic coupling

A steering coupling structure is disclosed which includes a cylindrical bushing mounted in a transmission line of a steering force in a steering system of a motor vehicle, such that an axis of the bushing extends in a direction substantially perpendicular to an axis of rotation of the steering system. The cylindrical bushing includes an inner sleeve connected to one of the input and output shafts of the steering system, an outer sleeve disposed radially outwardly of the inner sleeve and connected to the other shaft; and an annular elastic body interposed between the input and output sleeves for elastic connection thereof. The elastic body has diametrically opposed hollow portions formed on opposite sides of the inner sleeve such that the hollow portions extend in an axial direction of the bushing between the inner and outer sleeves, and such that the hollow portions are substantially opposed to each other in a diametric direction of the elastic body which is parallel to the axis of rotation of the steering system.

Steering coupling structure having cylindrical bushing with hollow

An upper support for a suspension system, which is interposed between a body of a vehicle and a shock absorber of the vehicle, for elastically connecting the vehicle body and the shock absorber. The upper support includes an inner rigid member, an outer rigid member, at least one annular elastic body interposed between the inner and outer rigid members for elastically connecting these rigid members, the above-indicated at least one elastic body at least partially defining at least one annular fluid chamber which is filled with a non-compressible fluid, and at least one annular partition member each of which is accommodated in the corresponding fluid chamber, such that each partition member is fixed to one of the inner and outer rigid members, and elastically connected to the other through the elastic body or bodies, so as to radially extend from the one rigid member toward the other rigid member, and such that each fluid chamber is divided by the corresponding partition member into two sections which undergo relative volumetric changes when a vibrational load is applied between the inner and outer rigid members. Each partition member has at least one orifice passage which allows the non-compressible fluid to flow therethrough between the two sections of the fluid chamber upon application of the vibrational load.

Upper support for shock absorber in suspension system

An upper support for a suspension system, having an inner and an outer rigid member, at least one generally annular elastic body interposed between the inner and outer rigid members for elastic connection therebetween, and which defines a generally annular fluid chamber that is filled with a non-compressible fluid. The upper support also includes an annular resonance member which is accommodated in the fluid chamber, and which is supported by one of the inner and outer rigid members so as to radially extend toward the other rigid member, so that the fluid chamber is substantially divided into two sections located on axially opposite sides of the resonance member. The upper support further includes a support device for elastically supporting the resonance member with respect to the above-indicated one of the inner and outer rigid members, such that the resonance member can be axially displaced relative to the one rigid member due to elastic deformation of the support device.

Upper support for shock absorber in suspension system, having

A fluid-filled cushioning device having a cylindrical elastic body mounted on an inner sleeve and having an orifice structure with an orifice formed therethrough is disclosed. A pair of annular elastic members each having a retainer member and an outer sleeve are mounted on the inner sleeve such that the retainer member is press-fitted in the axial end portion of the inner sleeve while the orifice structure is sandwiched between the axial end faces of the outer sleeves, in the axial direction. A bracket is mounted on the outer sleeves of the elastic members and is fixed to a support member, so that the bracket forces the outer sleeves against the orifice structure. The inner sleeve, elastic body and elastic members define two fluid-filled chambers which are separated from each other by the elastic body and which communicate with each other through the orifice. An axial dimension of each elastic member before being mounted on the inner sleeve is determined to permit each elastic member to be axially compressed upon mounting of the elastic members, so that the outer sleeves are urged against the orifice structure with a force sufficient to maintain fluid tightness between the elastic members and the orifice structure, whereby the mounting of the bracket on the outer sleeves of the elastic members may be effected in a condition that the fluid chambers are filled with the fluid.

Fluid-filled cushioning device having sealing arrangement for easy

A cylindrical upper support interposed between a body of a vehicle and a piston rod of a shock absorber of the vehicle, including a generally cylindrical or annular inner rigid member, a generally cylindrical outer rigid member, and an elastic body interposed between the inner and outer rigid members for elastically connecting the inner and outer rigid members. The elastic body has two fluid chambers which are filled with a non-compressible fluid and which are formed in respective intermediate portions thereof as viewed in axial directions of the rigid members, such that the fluid chambers are opposed to each other in a diametric direction of the inner rigid member. One of the inner and outer rigid members has two wing members which extend in a substantially radial direction thereof into the two fluid chambers, respectively, such that each of the two fluid chambers is substantially divided by the corresponding wing member into two sections, and such that the corresponding wing member provides the each fluid chamber with a restricted part through which the two sections communicate with each other.

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Ichinomiya, Japan

Shinji Miyakawa