IP Library › Granted Patent US 10,479,409

Granted Patent B2

US 10,479,409 · App. 16/022,855 · Granted Nov 19, 2019

Vehicle-body front structure

Inventors: Seiji Fujiwara (Tokyo, JP); Yosuke Hachisu (Tokyo, JP); Kenichi Takeda (Tokyo, JP)

Assignee: SUBARU CORPORATION

B62D21/155 B62D25/08

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Quick Facts

Patent No.: US 10,479,409
App. No.: 16/022,855
Granted: Nov 19, 2019
Kind: B2

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USPTO Patent Center↗ Full Patent PDF↗

Abstract

A vehicle-body front structure includes a pair of left and right side frames, a cross member, a pair of sub-frames, projections, and buckling structures. The pair of left and right side frames extend in a front-rear direction. The cross member is coupled to a lower side of the pair of left and right side frames and extends in a left-right direction. The pair of sub-frames are coupled to a lower side of the cross member and extend in the front-rear direction. Each projection is disposed on a front end side of the corresponding sub-frame and projects from the corresponding side frame outward in the left-right direction in a plan view. Each buckling structure is formed in the corresponding sub-frame and causes the sub-frame to buckle such that the corresponding projection comes into contact with the cross member when an impact load is applied to the projection from a front side.

Claims (43)

1. A vehicle-body front structure comprising:

a pair of left and right side frames extending in a front-rear direction;

a cross member that is coupled to a lower side of the pair of left and right side frames and that extends in a left-right direction;

a pair of sub-frames that are coupled to a lower side of the cross member and that extend in the front-rear direction;

projections each of which is disposed on a front end side of the corresponding sub-frame and projects from the corresponding side frame outward in the left-right direction in a plan view; and

buckling structures each of which is formed in the corresponding sub-frame and causes the sub-frame to buckle such that the corresponding projection comes into contact with the cross member when an impact load is applied to the projection from a front side.

2. The vehicle-body front structure according to claim 1 ,

wherein a width of each projection gradually decreases toward a rear side in a plan view.

3. The vehicle-body front structure according to claim 2 ,

wherein each projection has a substantially triangle shape in a plan view.

4. The vehicle-body front structure according to claim 1 ,

wherein a front end of each sub-frame is located at a higher position than a position of a joint between the sub-frame and the cross member, and each sub-frame buckles such that the sub-frame bends upward and downward when the impact load is applied to the corresponding projection from the front side.

5. The vehicle-body front structure according to claim 2 ,

6. The vehicle-body front structure according to claim 3 ,

7. The vehicle-body front structure according to claim 4 ,

wherein each buckling structure comprises a first buckling member that is formed on the corresponding sub-frame near a rear end of the corresponding projection and that causes the sub-frame to bend such that the sub-frame projects upward, and a second buckling member that is formed on the sub-frame between the first buckling member and the corresponding joint and that causes the sub-frame to bend such that the sub-frame projects downward.

8. The vehicle-body front structure according to claim 5 ,

9. The vehicle-body front structure according to claim 6 ,

10. The vehicle-body front structure according to claim 7 ,

wherein each first buckling member comprises a fragile part that is more fragile than a front-side part and a rear-side part, and

wherein each second buckling member comprises a rigidity-varying part at which a rigidity gradually increases toward a rear side.

11. The vehicle-body front structure according to claim 8 ,

wherein each first buckling member comprises a fragile part that is more fragile than a front-side part and a rear-side part, and

wherein each second buckling member comprises a rigidity-varying part at which a rigidity gradually increases toward a rear side.

12. The vehicle-body front structure according to claim 9 ,

wherein each first buckling member comprises a fragile part that is more fragile than a front-side part and a rear-side part, and

wherein each second buckling member comprises a rigidity-varying part at which a rigidity gradually increases toward a rear side.

13. The vehicle-body front structure according to claim 7 ,

wherein each first buckling member comprises a notch formed on an inner side in the left-right direction and a lower and rear side of the corresponding projection, and a bead that is formed on a lower side of the corresponding sub-frame inside the notch in the left-right direction and that extends in the left-right direction.

14. The vehicle-body front structure according to claim 8 ,

15. The vehicle-body front structure according to claim 9 ,

16. The vehicle-body front structure according to claim 10 ,

17. The vehicle-body front structure according to claim 11 ,

18. The vehicle-body front structure according to claim 12 ,

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 29, 2018

From: FUJIWARA, SEIJI; HACHISU, YOSUKE; TAKEDA, KENICHI

To: SUBARU CORPORATION

Reel/Frame 046235/0777 →

Priority Claims (1)

JP 2017-137467 · Jul 13, 2017 · national

Continuity (1)

Related Publication 20190016390A1 · Jan 17, 2019

Cited By (3)

US 12,221,162 US 12,233,937 US 12,384,312