US 11,530,728 B2Granted

Impact absorbing member

AssigneeNippon Steel Corporation

InventorYusuke Tsunemi

Life of this patent

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Abstract

The present impact absorbing member includes: a hat-shaped member having a hat top section; and a plate-shaped member facing the hat top section. A deformation guidance section is provided on a wall section of at least one of the hat top section and the plate-shaped member. The deformation guidance section includes: a first high strength section having relatively higher buckling resistance in the wall section; and a pair of low strength sections having relatively lower buckling resistance and arranged on both sides of the first high strength section therebetween in a view along the longitudinal direction. Furthermore, the impact absorbing member includes a pair of second high strength sections disposed on both sides of the deformation guidance section to be adjacent to the pair of low strength sections in a view along the longitudinal direction and having a higher buckling strength relative to the low strength sections.

Claims19

Dependent claims

An impact absorbing member which includes:

a hat-shaped member which has a flange section and whose cross-sectional shape perpendicular to a longitudinal direction includes a hat top section;
and a plate-shaped member joined to the flange section and facing the hat top section,
wherein a deformation guidance section is provided on a wall section of at least one of the hat top section and the plate-shaped member;
the deformation guidance section has a first high strength section having a relatively higher buckling resistance in the wall section and a pair of low strength sections having a relatively lower buckling resistance and arranged on both sides of the first high strength section therebetween in a view along the longitudinal direction;
and
a pair of second high strength sections which are arranged on both sides of the deformation guidance section to be adjacent to the pair of low strength sections and have a relatively higher buckling strength than the low strength sections in a view along the longitudinal direction,
wherein the first high strength section has a first bead section provided in the longitudinal direction on the wall section.

4 more elements

An impact absorbing member which includes:

a hat-shaped member which has a flange section and whose cross-sectional shape perpendicular to a longitudinal direction includes a hat top section;
and a plate-shaped member joined to the flange section and facing the hat top section,
wherein a deformation guidance section is provided on a wall section of at least one of the hat top section and the plate-shaped member;
the deformation guidance section has a first high strength section having a relatively higher buckling resistance in the wall section and a pair of low strength sections having a relatively lower buckling resistance and arranged on both sides of the first high strength section therebetween in a view along the longitudinal direction;
and
a pair of second high strength sections which are arranged on both sides of the deformation guidance section to be adjacent to the pair of low strength sections and have a relatively higher buckling strength than the low strength sections in a view along the longitudinal direction, and
wherein the deformation guidance section and the pair of second high strength sections are provided in each of the hat top section and the plate-shaped member.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/957,666Filed 26 Dec 2017
Published: US 2020/0332854 A122 Oct 2020
Granted: 20 Dec 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

F16F 7/12
Vibration-dampers; Shock-absorbers: using plastic deformation of members
F16F 7/123
Using plastic deformation of members: deformation involving a bending action, e.g. strap moving through multiple rollers, folding of members
B62D 21/15
Understructures, i.e. chassis frame on which a vehicle body may be mounted: having impact absorbing means, e.g. a frame designed to permanently or…
F16F 2224/0208
Solids: alloys