Nishikawa Rubber Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Yoshihiro Kohara

Shinichiro Emori

Masami Isobe

Eiichi Baba

Tatsuo Kobayashi

Takashi Yamashita

Hiromu Oda

Mitsuaki Arata

Syuuji Raisu

Hiroaki Miyahara

Kouji Nawate

Nobukazu Onishi

The present invention reduces the generation of an unusual sound resulting from vibration of a part of a sheet. A first sheet includes: a peripheral portion which is to surround a service hole of a door inner panel; and a central portion surrounded by the peripheral portion, the first sheet having, along a boundary between the central portion and the peripheral portion, a plurality of first holes and a plurality of second holes each of which differs in size from each of the plurality of first holes.

Sheet, door hole seal, and method for producing the same

Disclosed herein is a technique for further improving the quietness in a vehicle cabin while reducing an increase in the weight of a motor vehicle. A noise reduction member, arranged in a fender inner space defined between a fender panel serving as an exterior panel for a motor vehicle and an inner fender forming a wheelhouse, includes a pair of wall portions which are made of a foamed material and arranged to be spaced apart from each other.

Noise reduction members for motor vehicle fenders

There is provided a ventilation structure formed in an automobile door, which is made up of a door inner panel having a hole therethrough. A door hole seal is installed in an interior side of the door inner panel. The door hole seal has a slit or an air hole nearby the hole of the door inner panel, and it covers at least the hole. A door trim is installed on the interior side of the door inner panel sandwiching the door hole seal in combination with the door inner panel. There is/are partially or successively formed a gap or gaps between a periphery of the door trim and the door inner panel. At the time the door is closed, the air in the interior of an automobile is ejected to the exterior of the automobile through the gap or the gaps, the slit or the air hole, and a drain hole which is formed in the door inner panel.

Ventilation structure of automobile door

A sound-absorbing material is attached to the bottom edge of a periphery of the lower portion of a car door. The material is positioned above the seal memberwhich makes a resilient contact with a body panel, and carries out the seal between the outside and the inside of the car. The material is made of a foamhaving specific gravity of about 0.05&#x2013;0.4. The material restrains the noise. The foammay be provided with a plurality of protrusionson the surface thereof, or it may be provided with a hollow partalong the longitudinal direction thereof.

Sound-absorbing material for vehicle's lower portion

There is provided a door structure of an automobile, capable of being visually checked as to whether or not a peripheral edge of an opaque water/noise isolation sheet is reliably bonded to a door inner panel through the intermediary of a sealer (adhesive). With the door structure, the door inner panel of the automobile is provided with the opaque water/noise isolation sheet for ensuring watertightness and noise isolation after stopping up at least access holes of the door inner panel, and the inner peripheral edge of a transparent film substantially annular in shape is fixedly attached to the outer peripheral edge of the opaque water/noise isolation sheet, thereby forming a structure wherein the outer peripheral edge of the transparent film is bonded to the door inner panel through the intermediary of the sealer (adhesive).

Automobile door structure with water and noise isolation sheet

There is provided a door structure of an automobile, capable of being visually checked as to whether or not a peripheral edge of an opaque water.noise isolation sheet is reliably bonded to a door inner panel through the intermediary of a sealer (adhesive). With the door structure, the door inner panel of the automobile is provided with the opaque water.noise isolation sheet for ensuring watertightness and noise isolation after stopping up at least access holes of the door inner panel, and the inner peripheral edge of a transparent film substantially annular in shape is fixedly attached to the outer peripheral edge of the opaque water.noise isolation sheet, thereby forming a structure wherein the outer peripheral edge of the transparent film is bonded to the door inner panel through the intermediary of the sealer (adhesive).

A car door structure comprises a door inner panel , an interior door trim and a noise insulation sheet . The interior door trim is installed in the interior side of the door inner panel . The noise insulation sheet is provided between the door inner panel and the door trim , where it is hung down from the upper side to the lower side of the door inner panel like a curtain. The noise insulation sheet is fixed to either the door inner panel or the door trim . The noise insulation sheet is provided at about an upper half or a lower half of the door inner panel , or it is provided at a central part of the door inner panel while dividing approximately into three sections in a vertical direction or a horizontal direction.

Car door structure and noise insulation sheet

A sound insulating weather strip for automobile comprising: a hollow seal portion to be attached to at least one of a door and a body panel of a car; and a low density foam sponge material comprising a rubber or synthetic resin, and provided at a portion in said hollow seal portion which is to be held and compressed between said door or a glass and said body panel when said door is closed.

Growing community of inventors

Hiroshima-ken, Japan

Yoshihiro Kohara