ENERGY-ABSORBING STRUCTURE

WIPO Patent Application WO/2011/030717

A1

Provided is an energy-absorbing structure using a reverse spiral folded structure wherein a reaction force is high and the amount of energy absorption is large. The energy absorbing structure (10) using the reverse spiral folded structure is comprised of a cylindrical metal body and comprises minimum units (20) each of which is comprised of a reverse spiral folded structure having a polygonal column shape having a score of a diagonal line (28) on each side surface (26) sandwiched by a virtual top surface (22) and a virtual bottom surface (24). Three or more minimum units (20) are stacked in a direction perpendicular to the virtual top surface (20) or the virtual bottom surface (24).

HAGIWARA ICHIRO (JP)
ZHAO XILU (JP)
HU YABO (JP)

PCT/JP2010/065095

March 17, 2011

September 03, 2010

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TOKYO INST TECH (JP)
HAGIWARA ICHIRO (JP)
ZHAO XILU (JP)
HU YABO (JP)

F16F7/12; B62D21/15

JPS4950615A	1974-05-16
JPS5166633A	1976-06-09

ICHIRO HAGIWARA ET AL.: "Optimization for Crush Characteristics of Cylindrical Origami Structure Using Reversed Spiral Model", TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS, PART A, vol. 70, no. 689, 25 January 2004 (2004-01-25), pages 36 - 42
ICHIRO HAGIWARA ET AL.: "Modification of Cylindrical Origami Structure by subdivision and origami techniques", THE JAPAN SOCIETY OF MECHANICAL ENGINEERS 2004 NENDO NENJI TAIKAI KOEN RONBUNSHU, 4 September 2004 (2004-09-04), pages 73 - 74

NAMAI, Kazuhira (JP)
Wahei Namai (JP)

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