METHOD OF JOINING MEMBERS - SHOWA DENKO KK

Title:

METHOD OF JOINING MEMBERS

Document Type and Number:

WIPO Patent Application WO/2007/116927

Kind Code:

A1

Abstract:

A method of joining members, where a second member can be firmly joined to a first member constructed from a tubular body such as a pipe. First, the following elements are prepared: the first member (1) constructed from a tubular body having a polygon shaped cross section and a hollow section (3), the second member (5) having an insertion hole (6) with a cross sectional shape corresponding to the cross sectional shape of the first member (1), and split bodies (11) circumferentially split into multiple pieces, at positions corresponding to flat wall sections (1a) of the first member (1). Then, the first member (1) is inserted into the insertion hole (6) of the second member (5), and the split bodies (11) are placed in the hollow section (3) of the first member (1). After that, each segment (11a) of the split bodies (11) is moved radially outward of the first member (1), toward its each corner (1b). As a result, sections (2a) where the first member (1) is inserted in the insertion hole (6) and sections (2b, 2b) near axially both sides of the insertion sections (2a) are expanded to join the first member (1) and the second member (5).

Inventors:

MIYAZAKI MASAHIRO (JP)
KAWAMATA YASUJI (JP)

Application Number:

PCT/JP2007/057637

Publication Date:

October 18, 2007

Filing Date:

April 05, 2007

Export Citation:

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Assignee:

SHOWA DENKO KK (JP)
MIYAZAKI MASAHIRO (JP)
KAWAMATA YASUJI (JP)

International Classes:

B21D39/06; B21D39/20

Foreign References:

JPH1147855A	1999-02-23
JPH1136859A	1999-02-09
JPH048818A	1992-01-13
JPH03106226U	1991-11-01
JPS57103922A	1982-06-28
JPS5530567A	1980-03-04
JPS5388451A	1978-08-03
JP2002224743A	2002-08-13
JPH048818A	1992-01-13
JP2006105699A	2006-04-20

Other References: