A steering apparatus of a vehicle includes: a dust pack housing coupled to a top portion of a dust cap, which is combined with a rack housing to surround a pinion shaft, the dust pack housing disposed between and supporting a dash panel of the vehicle and the dust cap; and a noise attenuation member disposed between the dust pack housing and the pinion shaft and having plate shape so that an inner side of the noise attenuation member is spaced apart from the pinion shaft and an outer side of the noise attenuation member is fitted to the dust pack housing to attenuate noise that is transmitted to the inside of the dust panel.

An assembled body includes: a back door of a vehicle, the back door including an internal space; a subwoofer attached to the back door, a front face of the subwoofer being oriented to the outside of the back door, a back face of the subwoofer being oriented to an internal space side of the back door; and an exciter attached to the back door, the exciter generating an output for cancelling vibration of an installation spot due to the subwoofer.

A high heat polymer with improved sound deadening properties is provided. The material includes recycled PET (Polyethylene terephthalate) as its base polymer and combination of mineral fillers and fibers to improve heat deflection temperatures and to create a barrier within the polymer that blocks noise. The material uses use a combination of basalt fibers and mica to provide improved resistance to heat and improved elastic modulus and significant dampening of sound. The high heat performance and improved sound attenuation of the material enables the deletion of heat shields and added NVH pads to many under body and under-hood parts, as well as significantly reducing the material cost and weight in automobiles.

The assembly consists of a back door including an inner panel, a subwoofer attached to the inner panel, and two or more braces which are provided in the inner panel and which reduce the primary vibration mode and the secondary vibration mode of the inner panel which is vibrated by the subwoofer.

Sound insulation constructions, multilayer constructions for acoustically insulating a source of sound from a receiver that include one or more sound insulation constructions, structures comprising one or more sound insulation constructions and/or multilayer constructions, and a method for acoustically insulating a source of sound from a receiver. In some embodiments, the sound insulation construction includes a first layer and a second layer. The first layer can include a bonded fiber nonwoven web exhibiting a work of compression of at least about 0.7 kJ/m.sup.3 and an airflow resistance of no greater than 10,000 Rayls/m. The second layer can exhibit an airflow resistance of greater than 10,000 Rayls/m. In some embodiments, the method includes coupling the first layer to a surface of a vehicle to attenuate sound in at least a portion of the vehicle.

Sound insulation constructions, multilayer constructions for acoustically insulating a source of sound from a receiver that include one or more sound insulation constructions, structures comprising one or more sound insulation constructions and/or multilayer constructions, and a method for acoustically insulating a source of sound from a receiver. In some embodiments, the sound insulation construction includes a first layer and a second layer. The first layer can include a bonded fiber nonwoven web exhibiting a work of compression of at least about 0.7 kJ/m.sup.3 and an airflow resistance of no greater than 10,000 Rayls/m. The second layer can exhibit an airflow resistance of greater than 10,000 Rayls/m. In some embodiments, the method includes coupling the first layer to a surface of a vehicle to attenuate sound in at least a portion of the vehicle.

An apparatus is for use with a pillar adjacent to a vehicle window, such as a windshield. The apparatus includes a molding for positioning adjacent to the pillar, the molding forming a channel in a deployed condition for receiving moisture from the vehicle windshield, or for reducing the effects of wind throb when a single vehicle window is open. An actuator may be associated with the molding for activating a non-deployed condition of the molding for reducing the effects of wind noise.

The invention provides a heat shield for a heat- and sound-radiating component in a vehicle. The heat shield includes a carrier which has an inner side which, in the mounted state, faces the component and on which a continuous insulating material is arranged, for the absorption of heat and sound which are produced by the component. The carrier has a plurality of apertures in order to reduce sound radiation of the carrier. The provided embodiment and arrangement of the apertures, and the arrangement of the insulating material on the inner side significantly improve the sound- and heat-insulating properties of the heat shield.

A sound-absorbing material obtained by stacking nonwoven fabrics that has a structure for both maintaining its sound-absorbing performance and providing flame-retardancy. The sound-absorbing material is obtained by stacking a base material made of nonwoven fabric and a surface material made of nonwoven fabric, in which a flame-retardant material made of nonwoven fabric having a density that is higher than those of the base material and the surface material is disposed between the base material and the surface material. Also, a wire harness is provided with the sound-absorbing material in which the wire harness and the sound-absorbing material are integrated with each other by covering at least a portion of the wire harness extending in an axial direction, with the sound-absorbing material.

An acoustic protection cover for encapsulating a motor vehicle component, the cover including: a based on injection-molding material, the material comprising a thermoplastic matrix and a filler that is dispersed in such a way as to exhibit a density of between 1.3 and 1.6, the shell comprising two half-shells delimited by a thin region originating from the molding and forming a flexible hinge; a layer of elastically compressible foam overmolding the internal face of the shell, so that the cover forms an insulation system of the mass-spring type, the mass being formed by the shell and the spring by the layer; a means of holding the half-shells together once the hinge has been folded, so as to allow the component to be encapsulated, the matrix being made of polyvinyl butyral (PVB) and the level of filling being less than or equal to 50% by mass of the material.