End structure of vehicle

Patent metadata

Field	Value
Publication number	US-10427633-B2
Application number	US-201615546420-A
Country	US
Kind code	B2
Filing date	Feb 1, 2016
Priority date	Feb 6, 2015
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

[Solution] An end structure of a vehicle according to the present invention includes: a beam 2 that extends in a vehicle width direction; and a connecting structure 3 that connects the beam 2 to a vehicle body frame. In a cross-sectional view perpendicular to the vehicle width direction, the beam 2 includes a first top surface part 2a and a first bottom surface part 2b which face each other, a first side surface part 2c that connects one ends of the first top surface part 2a and the first bottom surface part 2b, and first flange parts 2d that are formed to protrude vertically outwardly at the other ends of the first top surface part 2a and the first bottom surface part 2b. The beam 2 is fixed to the connecting structure 3 by at least one of bonding of a protrusion 6 that is provided in the connecting structure 3 and is arranged to protrude inside the beam 2 to the first top surface part 2a and the first bottom surface part 2b and bonding of a beam attachment member provided in the connecting structure 3 to the first flange parts 2d.

First claim

The invention claimed is:

1. An end structure of a vehicle, comprising:
a beam that is provided to a vehicle body frame downward in the vertical direction and extends in a vehicle width direction; and
a connecting structure that is provided to extend in the vertical direction and connects the beam to the vehicle body frame,
wherein, in a cross-sectional view perpendicular to the vehicle width direction, the beam includes
a first top surface part and a first bottom surface part which face each other,
a first side surface part that connects one ends of the first top surface part and the first bottom surface part, and
first flange parts that are formed to protrude vertically outwardly at the other ends of the first top surface part and the first bottom surface part, and
the beam is fixed to the connecting structure by at least one of bonding of a protrusion that is provided in the connecting structure, protrudes inside the beam, and is arranged inside the beam to the first top surface part and the first bottom surface part and bonding of a beam attachment member provided in the connecting structure to the first flange parts.

2. The end structure of a vehicle according to claim 1 ,
wherein, in a case where the protrusion is provided in the connecting structure, a protruding side surface part which faces the first side surface part is formed in the protrusion.

3. The end structure of a vehicle according to claim 1 ,
wherein, in a case where the beam attachment member is provided in the connecting structure and the beam attachment member is fixed to the first flange parts,
in a cross-sectional view perpendicular to the vehicle width direction, the beam attachment member includes
a second top surface part and a second bottom surface part which face each other,
a second side surface part that connects one ends of the second top surface part and the second bottom surface part, and
second flange parts formed to protrude vertically outwardly at the other ends of the second top surface part and the second bottom surface part, and
the first flange parts and the second flange parts are fixed.

4. The end structure of a vehicle according to claim 3 ,
wherein the second side surface part is positioned on a vehicle interior side in a vehicle longitudinal direction with respect to the first flange parts.

5. The end structure of a vehicle according to claim 1 ,
wherein, in a case where the beam attachment member is provided in the connecting structure and the beam attachment member is fixed to the first flange parts,
a first reinforcing member is provided in a region of an opening part of the beam that faces at least the connecting structure in the vehicle width direction, and
a closed cross section is formed by the beam and the first reinforcing member in a cross-sectional view perpendicular to the vehicle width direction.

6. The end structure of a vehicle according to claim 5 ,
wherein, in a cross-sectional view perpendicular to the vehicle width direction, the first reinforcing member includes
a first reinforcing member top surface part and a first reinforcing member bottom surface part which face each other, and
a first reinforcing member side surface part that connects one ends of the first reinforcing member top surface part and the first reinforcing member bottom surface part, and
the first reinforcing member is arranged inside the beam, the first top surface part and the first reinforcing member top surface part are fixed, and the first bottom surface part and the first reinforcing member bottom surface part are fixed.

7. The end structure of a vehicle according to claim 6 ,
wherein, in the first reinforcing member side surface part, a convex part that protrudes to a vehicle interior side in a vehicle longitudinal direction with respect to the first flange parts is formed.

8. The end structure of a vehicle according to claim 7 ,
wherein at least a part of the first reinforcing member side surface part is in contact with the connecting structure.

9. The end structure of a vehicle according to claim 3 ,
wherein a second reinforcing member is provided in a region of an opening part of the beam that faces at least the beam attachment member,
in a cross-sectional view perpendicular to the vehicle width direction, the second reinforcing member includes
a second reinforcing member top surface part and a second reinforcing member bottom surface part which face each other,
a second reinforcing member side surface part that connects one ends of the second reinforcing member top surface part and the second reinforcing member bottom surface part, and
second reinforcing member flange parts formed to protrude vertically outwardly at the other ends of the second reinforcing member top surface part and the second reinforcing member bottom surface part,
the second reinforcing member is arranged inside the beam,
the second reinforcing member flange parts are fixed to the first side surface part, and
the second reinforcing member side surface part is in contact with the beam attachment member.

10. The end structure of a vehicle according to claim 1 ,
wherein, in a case where the beam attachment member is provided in the connecting structure and the beam attachment member is fixed to the first flange parts,
the connecting structure further includes a structure main body part that is provided to extend in the vertical direction,
the beam attachment member includes
a beam attachment surface to which the beam is attached and which includes a bent portion that bends toward a vehicle interior side in a vehicle longitudinal direction at an end on the outside in the vehicle width direction, and
a main body connecting surface which includes a surface perpendicular to the beam attachment surface in a plan view and is attached to the structure main body part, and
at least one third reinforcing member is additionally provided to bridge the structure main body part and the beam attachment surface in a plan view.

11. The end structure of a vehicle according to claim 10 ,
wherein the bent portion has a radius of curvature of 50 to 200 mm.

12. The end structure of a vehicle according to claim 10 ,
wherein the third reinforcing member is provided such that a ratio L 1 /L 2 of a length L 1 of the third reinforcing member in the vehicle longitudinal direction to a length L 2 of a surface of the structure main body part to which the third reinforcing member is attached in the vehicle longitudinal direction is 0.8 or more.

13. The end structure of a vehicle according to claim 10 ,
wherein the structure main body part has a U-shaped cross section in which an opening part is provided in the vehicle width direction in a plan view, and
a closed cross section part whose horizontal cross section shape formed by the structure main body part and the main body connecting surface is a closed cross section is further provided.

14. The end structure of a vehicle according to claim 13 ,
wherein, in a case where a plurality of third reinforcing members are provided in the vertical direction,
inside the closed cross section part, a reinforcing plate arranged in accordance with a position of a rear side tip, among tips of the third reinforcing member, in the vehicle longitudinal direction is provided, and
the reinforcing plate has a shape that extends to the rear side tip of the third reinforcing member positioned on the uppermost side from the rear side tip of the third reinforcing member positioned on the lowermost side among the plurality of third reinforcing members.

15. The end structure of a vehicle acc

Assignees

• Nippon Steel & Sumitomo Metal Corp
• Nippon Steel Corp

Inventors

• Mikazuki Yutaka
• Isogai Eiji
• Yamamoto Kenji
• Ariga Takashi
• Ishii Seiya

Classifications

• B60R2021/0004

  Frontal collision · CPC title

• B62D21/152

  Front or rear frames · CPC title

• B60R19/18

  {characterised by the cross-section;} Means within the bumper to absorb impact · CPC title

• B62D21/02

  comprising longitudinally or transversely arranged frame members · CPC title

• B60R19/56 Primary

  {Fittings damping bouncing force in truck collisions, e.g. bumpers;} Arrangements on high-riding vehicles, e.g. lorries, for preventing vehicles or objects from running thereunder · CPC title