Tokai Rubber Industries, Ltd.

Masayuki Sasagawa

Tomoki Inoue

Atsuo Miyajima

Naomasa Kaneko

Yuichi Wada

Toshikazu Ono

Piping unit for transporting a fuel is constructed by connecting a resin tube and a connector for connecting the resin tube to a mating pipe. The connector has a connector body including a retainer holding portion and a retainer for engaging with the mating pipe. The resin tube has a multilayered construction including an inner fuel barrier layer and an outer layer covered with a protective layer. The outer layer has a small outer diameter (od) up to 6 mm, the fuel barrier layer and the outer layer have a wall-thickness (t), and a ratio of the outer diameter (od)/the wall thickness (t) is in a range of 4 to 8.

Piping unit for transporting fuel

A piping structure for transporting a fuel arranged between an engine and a fuel tank, is constructed by use of a resin tube that is formed in a straight tubular shape. The resin tube is flexed and bent at one or more points along a longitudinal direction of the resin tube to define one or more bent portions and thereby is provided with a predetermined bent shape. The resin tube is fixed in a motor vehicle body so as to retain the bent portions and thereby assembled in the motor vehicle body.

Piping structure for transporting a fuel

A piping member is mounted in a mounting hole of one panel by a first holder and in a mounting hole of the other panel by a second holder, respectively. Each of the first and the second holders has a through-hole for receiving the piping member therethrough, and a fit-in projecting portion that is fitted in the mounting hole so as to be positioned. Each of the first and the second holders also has a resilient lug and a collar portion for cooperatively clamping the panel with its inner and outer surfaces therebetween. The first holder holds the piping member relatively movably axially with respect to the first holder therethrough, while the second holder securely fixes the piping member axially with respect to the second holder therethrough.

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Kasugai, Japan

Masayuki Sasagawa