Sumitomo Wiring Systems, Limited

Sumitomo Electric Industries, Limited

Hisayoshi Onoue

Makoto Takahashi

Takuya Inoue

Yuki Kawakita

Hitoshi Kawabe

Kouji Ohuchi

Masaru Furusyo

Mikio Kaji

Diameters and the number of respective wires are inputted, and a diameter of a virtual wire formed by converting a wire bundle to a model through a predetermined arithmetic expression derived from rule of thumb, and based upon this, a flexure life estimating process of the virtual wire is carried out. It is possible to easily estimate the flexure life and also to estimate the flexure life and obtain the results immediately after an application subject and a wire harness to be placed have been designed; thus, it becomes possible to shorten the developing period.

Flexure life estimating method, wire harness designing method and program thereof

A rubber plug includes a seal portion and an extension portion. Inner and outer peripheral lips form respective water-tight seals between the rubber plug and a cavity, and the rubber plug and a wire. The extension portion extends from the seal portion toward an open end of the cavity. When a bending force acts on the wire, the extension portion slightly deforms elastically, Put the seal portion will not be deformed. Therefore, the water-tight condition between the cavity and the wire is maintained. Therefore, even when a bending force acts on the wire, water is prevented from intruding into the cavity.

Rubber plug for waterproof connector having an extension that protects

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Mie, Japan

Hisayoshi Onoue