DOOR SASH AND METHOD FOR MANUFACTURING SAME

Title:

DOOR SASH AND METHOD FOR MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/2016/035445

Kind Code:

A1

Abstract:

Provided is a method for manufacturing a door sash such that rust is prevented and adhesion to a weatherstrip is improved. The method for manufacturing a door sash formed from a single plate comprises: a roll-forming step of performing roll-forming such that a gap (S) is created between plate sections which form a stepped part (12) and such that a plate section extending from a tubular section (13) has an end portion which, along with its surrounding area, comes into contact along the plate sections which form the stepped part (12); a pressing step of pressing the abovementioned end portion of the plate section, while crushing the gap part (S), to a position where the end portion will not protrude to the side where the weatherstrip (17) is fitted beyond the surface (111) of an overlapping section (11) and surface (131) of the tubular section (13) on the side where the weatherstrip is fitted; and a welding step of continuously laser-welding the overlapping section (11) along the longitudinal direction of the door sash.

Inventors:

NOGUCHI RYOTA (JP)

Application Number:

PCT/JP2015/069537

Publication Date:

March 10, 2016

Filing Date:

July 07, 2015

Export Citation:

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Assignee:

SANKEI GIKEN KOGYO CO LTD (JP)

International Classes:

B21D53/88; B23K26/21; B23K26/24; B60J5/04

Foreign References:

JPH11347669A	1999-12-21
JP2002336912A	2002-11-26
JPH11342743A	1999-12-14
JP2008080949A	2008-04-10
JP2010247771A	2010-11-04