Vehicle body floor structure for automobile

Patent metadata

Field	Value
Publication number	US-8979173-B2
Application number	US-201313802976-A
Country	US
Kind code	B2
Filing date	Mar 14, 2013
Priority date	Mar 29, 2012
Publication date	Mar 17, 2015
Grant date	Mar 17, 2015

Abstract

A vehicle body floor structure for an automobile, includes a joint line extending in a vehicle width direction and connecting a rear edge of a dashboard lower panel and a front edge of a front floor panel, a side sill extending in a front-rear direction and connected to an outer edge in the vehicle width direction of each of the dashboard lower panel and the front floor panel, a floor frame member extending in the front-rear direction and connected to the dashboard lower panel and an upper surface of the front floor panel on a side inward of the side sill in the vehicle width direction, and a floor gusset extending in the vehicle width direction, connecting the side sill and the floor frame member, and disposed on the upper surface of the front floor panel along the joint line.

First claim

What is claimed is:

1. A vehicle body floor structure for an automobile, comprising:
a dashboard lower panel and a front floor panel which are connected on a joint line extending in a vehicle width direction between a rear edge of the dashboard lower panel and a front edge of the front floor panel;
a side sill extending in a front-rear direction which is connected to an outer edge in the vehicle width direction of each of the dashboard lower panel and the front floor panel;
a floor frame member extending in the front-rear direction which is connected to an upper surface of each of the dashboard lower panel and the front floor panel on a side inward of the side sill in the vehicle width direction; and
a floor gusset extending in the vehicle width direction and connecting the side sill and the floor frame member, and which is disposed on the upper surface of the front floor panel along the joint line.

2. The vehicle body floor structure for an automobile according to claim 1 , wherein
the floor gusset is connected, with bolts, to an inner surface in the vehicle width direction of the side sill and an upper surface of the floor frame.

3. The vehicle body floor structure for an automobile according to claim 1 , wherein
the floor gusset has a closed section and is formed by connecting a first member forming an upper wall to a second member forming a lower wall, a front wall and a rear wall,
a first connection portion formed by upwardly bending an outer end in the vehicle width direction of the upper wall is connected to an inner surface in the vehicle width direction of the side sill,
a second connection portion formed by extending an inner end in the vehicle width direction of the upper wall inward in the vehicle width direction is connected to an upper surface of the floor frame, and
a side wall formed by upwardly bending an inner end in the vehicle width direction of the lower wall is made to face an outer surface in the vehicle width direction of the floor frame.

4. The vehicle body floor structure for an automobile according to claim 3 , wherein
a third connection portion formed by bending an upper end of the side wall inwardly in the vehicle width direction is connected to the upper surface of the floor frame while superposed on the second connection portion.

5. The vehicle body floor structure for an automobile according to claim 3 , wherein
a bulge portion which bulges downward is formed on the lower wall continuous to an outer side in the vehicle width direction of the side wall.

6. The vehicle body floor structure for an automobile according to claim 3 , wherein
the second connection portion is connected to the upper surface of the floor frame with a bolt, and
a bead which projects to a same height as a head portion of the bolt and extends in the vehicle width direction is formed on the upper wall.

7. The vehicle body floor structure for an automobile according to claim 6 , wherein
the first connection portion is connected to the inner surface of the side sill with a bolt.

8. The vehicle body floor structure for an automobile according to claim 3 , wherein
a bead which extends in the vehicle width direction is formed on the lower wall.

9. The vehicle body floor structure for an automobile according to claim 3 , wherein
a gap is formed at a connection portion between the first member and the second member.

10. The vehicle body floor structure for an automobile according to claim 9 , wherein
the gap is configured to permit a rust-proofing paint to flow into and out of a hollow space within the floor gusset.

11. The vehicle body floor structure for an automobile according to claim 1 , wherein
the frame member includes an end portion which is joined to a side wall, on an inside in the vehicle width direction, of the side sill, and
in a cross section orthogonal to a front-rear axis of the vehicle body, a joint portion between the side sill and the frame member is located near a Y-shaped intersection portion and includes a first reinforcement member which is superposed on an inner surface of the side sill and a second reinforcement member which is superposed on a lower surface of the front floor panel.

12. The vehicle body floor structure for an automobile according to claim 11 , wherein
the first reinforcement member has an L-shaped section formed of a longitudinal wall and a lateral wall,
the longitudinal wall is welded to an inner surface of the side wall of the side sill,
the lateral wall is welded to a portion on an outer side in the vehicle width direction of the second reinforcement member with a lower wall of the side sill interposed therebetween, and
a portion on an inner side in the vehicle width direction of the second reinforcement member is welded to the frame member with the front floor panel interposed therebetween.

13. The vehicle body floor structure for an automobile according to claim 11 , wherein
a front end of the first reinforcement member is located frontward of a front end of the frame member in the joint portion, and
a rear end of the first reinforcement member is located rearward of a rear end of the frame member in the joint portion.

14. The vehicle body floor structure for an automobile according to claim 11 , further comprising: a floor tunnel formed on the front floor panel; and another frame member extending in the vehicle width direction and connecting the side sill and the floor tunnel, wherein
a joint portion between the other frame member extending in the vehicle width direction and the floor tunnel is reinforced by a third reinforcement member which includes a lateral wall joined to an upper wall of the other frame member and a longitudinal wall joined to a side wall of the floor tunnel.

15. The vehicle body floor structure for an automobile according to claim 14 , wherein
the lateral wall of the third reinforcement member projecting from the upper wall of the other frame member to the front and the rear is bent downward.

16. The vehicle body floor structure for an automobile according to claim 12 , further comprising: a floor tunnel formed on the front floor panel; and another frame member extending in the vehicle width direction and connecting the side sill and the floor tunnel, wherein
a joint portion between the other frame member extending in the vehicle width direction and the floor tunnel is reinforced by a third reinforcement member which includes a lateral wall joined to an upper wall of the other frame member and a longitudinal wall joined to a side wall of the floor tunnel.

17. The vehicle body floor structure for an automobile according to claim 16 , wherein
the lateral wall of the third reinforcement member projecting from the upper wall of the other frame member to the front and the rear is bent downward.

18. The vehicle body floor structure for an automobile according to claim 1 , further comprising: a floor tunnel formed on the front floor panel; and another frame member extending in the vehicle width direction and connecting the side sill and the floor tunnel, wherein
a joint portion between the other frame member extending in the vehicle width direction and the floor tunnel is reinforced by a reinforcement member which includes a lateral wall joined to an upper wall of the other frame member and a longitudinal wall joined to a side wall of the floor tunnel.

19. The vehicle body floor structure for an automobile according to claim 18 , wherein
the lateral wall of the reinforcement member projecting from the upper wall of the other fram

Assignees

• Honda Motor Co Ltd

Inventors

• Kojo Yuki
• Sekiguchi Tomohide

Classifications

• B62D21/15 Primary

  having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body (bumpers B60R19/02; shock absorbers in general F16F) · CPC title

• B62D25/2036 Primary

  the subunits being side panels, sills or pillars (B62D21/157 takes precedence) · CPC title