TORSION BEAM TYPE SUSPENSION DEVICE

Title:

TORSION BEAM TYPE SUSPENSION DEVICE

Document Type and Number:

WIPO Patent Application WO/2012/011482

Kind Code:

A1

Abstract:

A torsion beam type suspension device, wherein a trailing arm part (15) and a torsion beam part (14) are integrally formed by pressing a tailored blank material formed by butt-welding end portions of plates with different thicknesses at a weld. The weld (17) of the tailored blank material is provided with a U-shaped transverse section formed by connecting front and back side wall sections (32, 33) by a bottom wall section (31), and a pair of cutouts (34a, 34b: 35c, 35d) are formed at positions that sandwich the weld (17) therebetween at the end edge of each of the side wall sections (32, 33). Therefore, by shifting stress concentration from the weld (17) to the cutouts (34a, 34b: 35c, 35d) when the torsion beam part (14) is torsionally deformed, a weld end is prevented from peeling, thereby achieving improvement in the durability of the torsion beam type suspension device.

Inventors:

OHDO TAKAKI (JP)
MORI MASAFUMI (JP)
OKAZAKI TAKASHI (JP)
FUJITA TAKUMI (JP)

Application Number:

PCT/JP2011/066409

Publication Date:

January 26, 2012

Filing Date:

July 20, 2011

Export Citation:

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Assignee:

HONDA MOTOR CO LTD (JP)
OHDO TAKAKI (JP)
MORI MASAFUMI (JP)
OKAZAKI TAKASHI (JP)
FUJITA TAKUMI (JP)

International Classes:

B60G9/04

Foreign References:

JP2006306211A	2006-11-09
JPH08127211A	1996-05-21
JP2000071022A	2000-03-07
US5409254A	1995-04-25
EP1338447A2	2003-08-27
EP0681932A2	1995-11-15
US5909888A	1999-06-08
JP2010208549A	2010-09-24
JP2006281885A	2006-10-19
JP2006306211A	2006-11-09

Other References: