Hatchback door structure for vehicles

Abstract

A hatchback door structure for vehicles which includes an inner panel arranged on an inner side of a vehicle; and an outer panel arranged on an outer side of the vehicle, wherein the inner panel includes a frame which has a shape outlining an outer shape of the hatchback door, and a pair of stiffening ribs which is integrally formed with the frame and extends approximately in a V-shape to both side portions of the frame from a bottom side of the frame. Further, the inner panel is integrally formed by press-forming and includes a discrete lateral beam which is fixed and extends between jointing portions of the side portions of the frame and stiffening ribs, wherein, the discrete lateral beam is formed by press-forming, and a window frame on which a window glass is fixed is formed in an upper portion of the frame.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a partial perspective view of a vehicle to which a hatchback door structure according to a first embodiment of the present invention is applied;

FIG. 2 is a perspective view showing an inner panel, seen from outside a vehicle, which configures a hatchback door structure according to the first embodiment;

FIG. 3 is a partial perspective view showing a frame of an inner panel around a side and stiffening rib portions seen from inside a vehicle, that is, a portion indicated by an arrow C in FIG. 2;

FIG. 4 is a perspective view showing an inner panel, seen from outside a vehicle, which configures a hatchback door structure according to a second embodiment of the present invention;

FIG. 5 is a cross sectional view taken along a line X-X of FIG. 4;

FIG. 6 is a side view of an inner panel according to the second embodiment;

FIG. 7 is a perspective view of an inner panel, seen from outside a vehicle, which configures a hatchback door structure according to another embodiment of the present invention;

FIG. 8 is a schematic view of a vehicle, seen from backward of the vehicle, to which a hatchback door structure according to a third embodiment of the present invention is fitted up;

FIG. 9 is a perspective view of an inner panel which is used for a hatchback door structure according to the third embodiment;

FIG. 10A is a perspective view of a discrete lateral beam according to the third embodiment;

FIG. 10B is a cross sectional view of the discrete lateral beam according to the third embodiment, taken along a line N-N line at a center portion;

FIG. 11 is a side view of an inner panel, seen from a A direction indicated by an arrow A in FIG. 9, which is used for the third embodiment;

FIG. 12A is an enlarged view of a portion B in FIG. 9 on which a lateral beam of an inner panel according to the third embodiment is welded;

FIG. 12B is an enlarged view of a portion P in FIG. 15 on which a lateral beam of an inner panel according to a conventional example is welded;

FIG. 13 is a perspective view of an inner panel reinforced by a V-shaped stiffening rib which is used for another embodiment of the present invention;

FIG. 14 is a schematic illustration of a vehicle, seen from backward of the vehicle, for explaining a configuration of a conventional hatchback door structure; and

FIG. 15 is a perspective view showing an example of an inner panel which configures a conventional hatchback door structure.

Claims

1. A hatchback door structure for vehicles, comprising: an inner panel which is arranged on an inner side of a vehicle; andan outer panel which is arranged on an outer side of the vehicle,wherein the inner panel comprises:a frame which has a shape outlining an outer shape of the hatchback door, anda pair of stiffening ribs which are integrally formed with the frame and extends approximately in a V-shape from a bottom part of the frame to each of a couple of side portions of the frame.

2. The hatchback door structure for vehicles according to claim 1, wherein a smoothly continuous surface portion is formed at a connection part between a side portion of the frame and the stiffening rib.

3. The hatchback door structure for vehicles according to claim 1, wherein the pair of the stiffening ribs extends approximately in a V-shape from a locking device fixing portion which is formed on the bottom part of the frame to each of the couple of side portions of the frame, the locking device fixing portion being configured for fixing a locking device.

4. The hatchback door structure for vehicles according to claim 1, wherein the inner panel has louvered-walls which are integrally formed with the inner panel, protrude outward to an outer panel side and jointed to the outer panel.

5. The hatchback door structure for vehicles according to claim 1, wherein, on an upper side of the stiffening ribs, a first opening is defined by the stiffening ribs and the frame, on a lower side of one of the stiffening ribs, a second opening is defined by the one of the stiffening ribs and the frame, and on a lower side of the other stiffening rib, a third opening is defined by the other stiffening rib and the frame.

6. The hatchback door structure for vehicles according to claim 1, wherein the inner panel further comprises a lateral beam which extends between jointing portions on each of which are jointed the side portion of the frame and stiffening rib, and is integrally formed with the inner panel by press-forming.

7. The hatchback door structure for vehicles according to claim 1, wherein the inner panel is integrally formed by press-forming, and further comprises a discrete lateral beam which extends between jointing portions on each of which are jointed the side portion of the frame and stiffening rib.

8. The hatchback door structure for vehicles according to claim 7, wherein the discrete lateral beam is formed in a circular shape so that the lateral beam protrudes in convex to an outer side of a vehicle, and a size of a cross section of the lateral beam gradually becomes smaller from a center to each of a couple of ends of the lateral beam.

9. The hatchback door structure for vehicles according to any one of claims 7 and 8, wherein the discrete lateral beam is arranged so that a protruded direction of the lateral beam which is more or less perpendicular to an extending direction of the lateral beam is directed along an opening-closing direction of the hatchback door.

10. The hatchback door structure for vehicles according to claim 7, wherein each fixing portion of the discrete lateral beam on each jointing portion is formed so that the each fixing portion is arranged on an identical plane defined in a vehicle width direction.

11. A hatchback door structure for vehicles according to claim 7, wherein, the discrete lateral beam is formed by press-forming, and a window frame on which a window glass attaches is formed in an upper portion of the frame.

12. The hatchback door structure for vehicles according to claim 11, wherein the press-forming direction of the discrete lateral beam is different from the press-forming direction of the inner panel.

13. The hatchback door structure for vehicles according to any one of claims 11 and 12, wherein the discrete lateral beam is fixed at approximately right angle against the frame of the inner panel at both bottom corners of the window frame.

14. The hatchback door structure for vehicles according to any one of claims 11 and 12, wherein a cross sectional width of the inner panel is different from a cross sectional width of the discrete lateral beam in an inside-outside direction of the hatchback door.

15. The hatchback door structure for vehicles according to claim 11, wherein a material of the inner panel is different from a material of the discrete lateral beam in thickness.

16. The hatchback door structure for vehicles according to any one of claims 11 and 12, wherein a material of the inner panel is different from a material of the discrete lateral beam.