SEGMENT JOINT STRUCTURE

Japanese Patent JP2017008652

A

PROBLEM TO BE SOLVED: To provide an inexpensive segment joint structure that has high workability in assembling and high fastening power and tensile strength.SOLUTION: A male joint member 3 comprises: a male joint main part 6, which protrudes from one joint end face; and male engaging prats 7, 7, which protrude along a segment width direction on the male joint main body 6. A female joint member 5 comprises: an outer shell part 10, which is fixed in a concavity; an engaging base, which is fixed on the joint end face side of the outer shell part 10 and has an insertion passage 14 into which the male joint main part 6 is inserted; an elastic engaging body 12, which is disposed inside in segment circumferential direction of the engaging base and supported by the engaging base and energizes the male engaging part 7; and a reinforcing engaging part 13, which is adjacent to the elastic engaging body 12 and fixed to the engaging base. The male engaging part 7 butts to the reinforcing engaging part 13 when a tensile force above a certain level in the circumferential direction is applied between both segments 1, 1 in a segment joint structure.SELECTED DRAWING: Figure 2

OZEKI MUNETAKA
KEMURIYAMA CHIKASHI
YAMAGUCHI NOBUAKI
YOSHIZAKI TAKAHIKO
KATAOKA KIYOSHI
KISHISHITA TAKAHIRO
ISOZAKI TOMOHITO

JP2015127259A

January 12, 2017

June 25, 2015

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NIPPON HUME CORP
FUJITA CORP

E21D11/04

JP2004285575A	2004-10-14
JP2001234696A	2001-08-31
JP2014201993A	2014-10-27
JP2014201992A	2014-10-27
JPS55145599U	1980-10-18
JP2012087594A	2012-05-10
JP2000064791A	2000-02-29
JP2002030891A	2002-01-31
JP2010133112A	2010-06-17

EP0979927A1

2000-02-16

Masao Tanaka
Rita Ishii

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