Impact absorbing structure of automobile
AssigneeNippon Steel Corporation
InventorRyo Urushibata
Life of this patent
Estimating the term…
Abstract
An impact absorbing structure includes: a first member composed of a metallic material; and a second member extending in an axial direction of the first member, wherein: a shape of the first member is a cylindrical shape; a length of the second member in the axial direction is a length of 15 to 75% of a length in the axial direction of the first member; when a distance between end portions of the first member and the second member is set as D, a maximum curvature radius of the first member is set as R, and a sheet thickness of the first member is set as t, D<0.40Rt is satisfied; and a joint line, extending along a direction different from a circumferential direction of the first member, of the first member and the second member is present.
Claims13
An impact absorbing structure of an automobile, comprising:
- a first member composed of a metallic material;
- and
- a second member joined to an outer surface or an inner surface of the first member, and extending in an axial direction of the first member, wherein:
- a shape of the first member is a cylindrical shape;
- a length of the second member in the axial direction of the first member is a length of 15 to 75% of a length in the axial direction of the first member;
- the first member and the second member overlap each other over an overall length of the second member in the axial direction,
- when a distance between end portions of the first member and the second member in the axial direction of the first member is set as D, a maximum curvature radius of the first member in a cross section perpendicular to the axial direction of the first member is set as R, and a sheet thickness of the first member is set as t, 0≤D<0.40Rt is satisfied;
- and
- a joint line, extending along a direction different from a circumferential direction of the first member, of the first member and the second member is present.
An impact absorbing structure of an automobile, comprising:
- a first member composed of a metallic material;
- and
- a second member joined to an outer surface or an inner surface of the first member, and extending in an axial direction of the first member, wherein:
- a shape of the first member is a square tube shape;
- a length of the second member in the axial direction of the first member is a length of 15 to 75% of a length in the axial direction of the first member;
- the first member and the second member overlap each other over an overall length of the second member in the axial direction,
- when a distance between end portions of the first member and the second member in the axial direction of the first member is set as D, a width of a flat surface portion of the first member is set as Wp, and a sheet thickness of the first member is set as t, 0≤D<1.11Wpt is satisfied;
- and
- a joint line, extending along a direction different from a circumferential direction of the first member, of the first member and the second member is present.
An impact absorbing structure of an automobile, comprising:
- a first member comprising a metallic material;
- and
- a second member joined to an outer surface or an inner surface of the first member, and extending in an axial direction of the first member, wherein:
- a shape of the first member is a cylindrical shape;
- a length of the second member in the axial direction of the first member is a length of 15 to 75% of a length in the axial direction of the first member;
- the first member and the second member overlap each other over an overall length of the second member in the axial direction,
- when a distance between end portions of the first member and the second member in the axial direction of the first member is set as D, a maximum curvature radius of the first member in a cross section perpendicular to the axial direction of the first member is set as R, and a sheet thickness of the first member is set as t, 0≤D<0.40Rt is satisfied;
- and
- a joint line, extending along a direction different from a circumferential direction of the first member, of the first member and the second member is present.
An impact absorbing structure of an automobile, comprising:
- a first member comprising a metallic material;
- and
- a second member joined to an outer surface or an inner surface of the first member, and extending in an axial direction of the first member, wherein:
- a shape of the first member is a square tube shape;
- a length of the second member in the axial direction of the first member is a length of 15 to 75% of a length in the axial direction of the first member;
- the first member and the second member overlap each other over an overall length of the second member in the axial direction,
- when a distance between end portions of the first member and the second member in the axial direction of the first member is set as D, a width of a flat surface portion of the first member is set as Wp, and a sheet thickness of the first member is set as t, 0≤D<1.11Wpt is satisfied;
- and
- a joint line, extending along a direction different from a circumferential direction of the first member, of the first member and the second member is present.
Dependencies are inferred from the claim text.