Title:
FIXING STRUCTURE FOR PIPING
Document Type and Number:
WIPO Patent Application WO/2020/246361
Kind Code:
A1
Abstract:
A fixing structure for piping comprises: an upstream cylinder (35) provided in an exhaust gas passage (22) of an engine (15); a downstream cylinder (37) provided on the downstream side of the upstream cylinder (35); an annular upstream-side flange portion (35C) provided at the end of the upstream cylinder (35) on the downstream cylinder (37) side; an annular downstream-side flange portion (37B) provided at the end of the downstream cylinder (37) on the upstream cylinder (35) side; a clamp fitting (67) in which a plurality of clamp pieces (67A) having groove (68) with a U-shaped or V-shaped cross section is configured so that the grooves (68) face inward and form an annular shape, and in which connecting surfaces (35D, 37D) of the upstream-side flange portion (35C) and the downstream-side flange portion (37B) are attachably and detachably connected by sandwiching inside the grooves (68) in a state of contact with each other; and a rib-shaped protrusion (92) provided on the outer peripheral surface of the upstream cylinder (35) and/or the downstream cylinder (37) so as to protrude to a predetermined height in parallel with the side edge of the clamp piece (67A) while forming a predetermined gap on the outer side.
Inventors:
MOTOYAMA YUTO (JP)
Application Number:
PCT/JP2020/021100
Publication Date:
December 10, 2020
Filing Date:
May 28, 2020
Export Citation:
Assignee:
TOYOTA JIDOSHOKKI KK (JP)
International Classes:
F16B2/10; F01N3/035; F01N3/28; F01N13/18; F16L23/08
Foreign References:
| US20080060351A1 | 2008-03-13 | |||
| JP2008156835A | 2008-07-10 | |||
| JP2010065559A | 2010-03-25 | |||
| JPS5492425U | 1979-06-30 | |||
| JPH10280947A | 1998-10-20 | |||
| JP2017207086A | 2017-11-24 |
Other References:
See also references of EP 3981991A4
Attorney, Agent or Firm:
SATO Tsutomu et al. (JP)
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