Piping Structure for Transporting a Fuel
AssigneeTokai Rubber Industries, Ltd.
InventorsTomoki Inoue, Masayuki Sasagawa
Life of this patent
Estimating the term…
Abstract
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.
Claims15
A resin tube for transporting a fuel to be adapted in a piping structure for transporting a fuel, arranged between an engine and a fuel tank, the piping structure, comprising:
- resin tube formed in a straight tubular shape, for transporting a fuel, the resin tube being 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 being provided with a predetermined bent shape, and
- fixing clamp for fixing the resin tube in a motor vehicle body so as to retain the one or more bent portions and thereby assembling the resin tube in the motor vehicle body,
- the resin tube, comprising:
- a small diameter resin tube body with an outer diameter up to 6 mm, and
- an elastic clamped layer laminated on an outer peripheral surface of the resin tube body to be clamped by the fixing clamp, the elastic clamped layer having a predetermined wall thickness and covering the resin tube body along an entire effective length of the resin tube that effects flexing deformation.
A resin tube for transporting a fuel to be adapted in a piping structure for transporting a fuel, arranged between an engine and a fuel tank, the piping structure, comprising:
- a resin tube formed in a straight tubular shape, for transporting a fuel, the resin tube being 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 being provided with a predetermined bent shape, and
- a fixing clamp for fixing the resin tube in a motor vehicle body so as to retain the one or more bent portions and thereby assembling the resin tube in the motor vehicle body,
- wherein a mark is provided on an outer peripheral surface of the resin tube, along a generally entire length of the resin tube, the mark extends linearly in a longitudinal direction of the resin tube in a state that the resin tube extends straight.
The resin tube for transporting a fuel to be adapted in a piping structure for transporting a fuel, arranged between an engine and a fuel tank, the piping structure comprising:
- a resin tube formed in a straight tubular shape, for transporting a fuel, the resin tube being 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 being provided with a predetermined bent shape,
- a fixing clamp for fixing the resin tube in a motor vehicle body so as to retain the one or more bent portions and thereby assembling the resin tube I the motor vehicle body, and
- a connector attached to an end portion of the resin tube for connecting the resin tube with a mating pipe,
- wherein the resin tube is adapted to be assembled in the motor vehicle body while the tube is connected with the mating pipe via the connector,
- wherein the fixing clamp retains the one or more bent portions of the resin tube by fixing a region on each side of the one or more bent portions of the resin tube in the motor vehicle body,
- wherein the fixing clamp has a resilient holding portion of generally annular shape, and an opening through which the resin tube is adapted to be fitted in the holding portion in a direction perpendicular to an axis while resiliently widening the opening, and
- wherein the fixing clamp is constructed such that the opening is closed when the fixing clamp is fixed in the motor vehicle body while holding the resin tube in the holding portion.
Dependencies are inferred from the claim text.