RESIN FILLER TUBE, AND METHOD FOR MANUFACTURING THE SAME

Japanese Patent JP2021181189

A

To provide a resin filler tube capable of ensuring rigidity at a bent cylindrical portion while facilitating manufacturing, and a method for manufacturing the same.SOLUTION: A resin filler tube 13 connects an oil supply port 11 and a fuel tank 12 together, and is provided with straight cylindrical portions 21, 22 and 23 and bent cylindrical portions 26 and 27. Each of the bent cylindrical portions 26 and 27 is provided with a bellows-shaped bent inner-side portion 30 in which crest portions 31, 32, and 33 and trough portions 34 continue, and a bent outer-side portion 40 formed by a no-bellows-shaped smooth surface. The trough portions 34 of the bent inner-side portion 30 have linear outer circumferential surfaces parallel to the center line L of the bent cylindrical portions 26 and 27 in a state in which the bent cylindrical portions 26 and 27 have straight cylindrical shapes. The linear outer circumferential surfaces of the trough portions 34 are formed in entire circumferential-directional areas in which the crest portions 31, 32 and 33 are formed.SELECTED DRAWING: Figure 3

WO/2022/058708	MACHINE AND METHOD
JPS5649231	CONTINUOUS MOLDING FOR BELLOW TUBE WITH FLAT PART
WO/2022/167769	FLUID TRANSFER COMPONENT WITH FLEXIBLE REGION FORMING BELLOWS

SHIMOJO MAKOTO
MIYAJIMA ATSUO
KOBAYASHI ATSUYUKI
PARK EUNJIN

JP2020087408A

November 25, 2021

May 19, 2020

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SUMITOMO RIKO CO LTD

B29C53/30; B29C53/08; B29D23/00; B29D23/18; F16L11/11

Patent Business Corporation Aichi International Patent Office
Patent business corporation Kyoritsu

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