Nissan Motor Company Limited

Toyo Tire Rubber Co., Ltd.

Sumitomo Riko Company Limited

Takeshi Hamanaka

Yukio Takashima

Hironori Koyama

Mutsumi Muraoka

Satoshi Umemura

Jyoji Tsutsumida

Masaaki Itoh

Shingo Hatakeyama

Hironori Daito

Shinichi Suganuma

Kaoru Murakami

A fluid-filled type vibration damping device including a base component and a tubular mating component. The tubular mating component is externally fitted onto the base component by means of a diameter-constricting caulking with a sealing rubber clasped therebetween so as to constitute a mate-fastened portion. The tubular mating component extends axially outward beyond a sealed section of the mate-fastened portion so as to provide a caulking tube portion. A diametrical position of the tubular mating component at the sealed section is determined by contact of the caulking tube portion against an outside peripheral face of a positioning projection provided on the base component so as to define a diametrical positioning portion. The caulking tube portion is constricted in diameter and held in engagement with an axial edge portion of the positioning projection so as to form an axial positioning portion.

Fluid-filled type vibration damping device and manufacturing method thereof

In an anti-vibration device having a partition member dividing a fluid-sealed chamber into upside and downside, aimed at enhancing the anti-vibration performance by preventing unwanted leak of the fluid through through-holes of the partition member. To that end, the partition member is constructed of an elastic membrane partitioning the fluid-sealed chamber, and a pair of grids limiting displacements of the elastic membrane; and the elastic membrane is provided at its either surface with projecting streaks integral therewith, the projecting streaks surrounding through-holes, defined by the grids, over their whole peripheries and abutting on the grids, thereby regulating the flow of fluid among adjacent through-holes.

Fluid-sealed anti-vibration device

Growing community of inventors

Ebina, Japan

Takeshi Hamanaka