JP2005231495A - Side door structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a side door structure to suppress deformation of a side door during an side impact. <P>SOLUTION: A door side part of a door hinge 34 is formed at a part facing a rear portion of an exterior wall part 50A in the vehicle width direction of a pillar 50 in a door inner 16 of a side door 12, and when an impact beam 24 is pressed from the outer side in the vehicle width direction to the inner side in the vehicle width direction during the side impact, the input load from the impact beam 24 is transmitted from a pillar side part 35 of the door hinge 34 to a pillar 50 via a door hinge shaft 36 penetrating a front end 24A of the impact beam 24. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a side door structure, and more particularly to a side door structure of a vehicle such as an automobile.

Conventionally, in a side door structure of a vehicle such as an automobile, an impact beam (also referred to as a door beam) is provided in the side door in the longitudinal direction of the vehicle body to reduce deformation of the side door to the vehicle interior side during a side collision, A configuration that protects passengers is known (see, for example, Patent Document 1).
Japanese Patent No. 3117840

  However, in Patent Document 1, the front end portion of the impact beam is located behind the outer wall of the pillar in the vehicle width direction, and the bracket fixed to the front end portion of the impact beam sandwiches the front wall portion of the door inner panel. It is fixed to the door hinge. As a result, the load acting on the impact beam at the time of a side collision is transmitted to the pillar via the bracket, the door side portion of the door hinge, the hinge shaft, and the pillar side portion. For this reason, at the time of a side collision, rotation in the vehicle interior side centering on the hinge axis of the side door occurs, and the deformation of the side door increases.

  An object of the present invention is to obtain a side door structure capable of suppressing deformation of the side door at the time of a side collision in consideration of the above fact.

The present invention according to claim 1 is a door inner constituting the compartment side portion of the side door;
A door side portion of a door hinge formed in a portion facing the outer wall portion in the vehicle width direction of the pillar in the door inner;
An impact beam extending along the front-rear direction of the door in the side door, and a front end extending to a portion facing the outer wall of the pillar in the vehicle width direction;
A hinge shaft penetrating at least one of the impact beam and the impact beam bracket and pivotally supported on a door side portion of the door hinge;
It is characterized by having.

  Therefore, at the time of a side collision, an impact beam that extends along the front-rear direction of the side door and extends at a position where the front end portion faces the outer wall portion of the pillar in the vehicle width direction is When pressed toward the inner side in the width direction, the door side portion is formed at a portion of the door inner facing the outer wall portion in the vehicle width direction of the pillar in the door inner, and the impact beam and the impact beam bracket Can be transmitted to the pillar only through a door hinge having a hinge shaft penetrating at least one of them. As a result, it is possible to suppress the deformation of the side door toward the vehicle interior around the hinge axis of the side door.

  According to the first aspect of the present invention, there is provided a door inner constituting a compartment side portion of the side door, a door side portion of a door hinge formed in a portion of the door inner facing the outer wall portion in the vehicle width direction of the pillar, Extending along the front-rear direction of the door, with the front end extending through a portion facing the outer wall of the pillar in the vehicle width direction, and penetrating at least one of the impact beam and the impact beam bracket. The hinge shaft pivotally supported on the door side portion of the door hinge has an excellent effect of suppressing deformation of the side door at the time of a side collision.

  An embodiment of the side door structure of the present invention will be described with reference to FIGS.

  In the figure, the arrow FR indicates the vehicle body front direction, the arrow UP indicates the vehicle body upward direction, and the arrow IN indicates the vehicle width direction inner side.

  As shown in FIG. 1, the side door 12 of the automobile body 10 includes a door outer panel 14 constituting the door outer surface of the side door 12, and a passenger compartment side of the door outer panel 14 (inner side in the vehicle width direction with the door closed). And a door inner 16 that constitutes a compartment side portion of the side door 12. The door inner 16 is made of a cast product such as aluminum or magnesium.

  Further, the outer peripheral edge portion 14A of the door outer panel 14 is coupled to the outer peripheral edge portion 16A of the door inner 16 by hemming, and the hemming portion 12A at the front end edge portion of the side door 12 is connected to the straight line L1 along the longitudinal direction of the vehicle body. The vehicle is inclined at a predetermined angle θ1 inward in the vehicle width direction.

  An impact beam 24 extends in the front-rear direction of the door on the back surface 14B side of the door outer panel 14, and the impact beam 24 is made of a pipe member having a circular cross section.

  Further, an impact beam bracket 26 is disposed at the front end portion 24A of the impact beam 24, and the front end portion 24A of the impact beam 24 is fixed to the front portion 16B of the door inner 16 via the impact beam bracket 26. .

  As shown in FIG. 2, the impact beam bracket 26 is made of a plate material, and has a plurality of convex portions 28 that are trapezoidal in cross-section when viewed from the vehicle longitudinal direction toward the vehicle width direction outer side and extend in the vehicle longitudinal direction. The book is formed. The impact beam bracket 26 is formed with a convex portion 30 having a lateral U-shaped cross section viewed from the vehicle body front-rear direction and extending in the vehicle front-rear direction toward the inner side in the vehicle width direction. The front end portion 24A of the impact beam 24 is coupled to the inner peripheral bottom portion 30A of the convex portion 30 by welding, adhesion, or the like.

  As shown in FIGS. 3 and 4, the front portion 16 </ b> B of the door inner 16 has a convex portion 32 that bulges inward in the vehicle width direction and extends in the longitudinal direction of the vehicle body.

  As shown in FIG. 2, the convex portion 30 of the impact beam bracket 26 is inserted into the convex portion 32 of the door inner 16. In addition, a bulging portion 32 </ b> A having a U-shaped cross section protruding further inward in the vehicle width direction is formed at the inner end in the vehicle width direction of the convex portion 32 of the door inner 16.

  A pillar side portion 35 of the door hinge 34 is disposed in the vicinity of the lower portion of the convex portion 32 of the door inner 16, and a hinge shaft 36 that is pivotally supported by the pillar side portion 35 of the door hinge 34 extends above the vehicle body. . The upper part of the hinge shaft 36 includes a door side part 38 of the door hinge 34 formed on the upper part of the convex part 32 of the door inner 16 and a door side part 40 of the door hinge 34 formed on the lower part of the convex part 32 of the door inner 16. It is pivotally supported.

  Further, the hinge shaft 36 passes through the convex portion 30 of the impact beam bracket 26 and the front end portion 24 </ b> A of the impact beam 24.

  The door side portion 48 of the door hinge 44 is also formed on the upper portion 16 </ b> C of the door inner 16. Further, a hinge shaft 46 pivotally supported on the pillar side portion 45 of the door hinge 44 is extended above the vehicle body, and an upper portion of the hinge shaft 46 is pivoted on a door side portion 48 of the door hinge 44 formed on the upper portion 16C of the door inner 16. It is supported.

  As shown in FIG. 1, the pillar side portion 35 of the door hinge 34 is fixed to the vehicle width direction outer side wall portion 50 </ b> A of the pillar 50 by a fixing member 52 such as a bolt.

  The hinge shaft 36 is disposed at a portion facing the rear portion of the vehicle width direction outer wall portion 50A of the pillar 50, and the door side portions 38 and 40 of the door hinge 34 on which the hinge shaft 36 is pivotally supported (see FIG. 2). ) Is also formed at a portion of the door inner 16 that faces the rear portion of the outer wall portion 50A of the pillar 50 in the vehicle width direction. Further, the front end portion 24A of the impact beam 24 is also extended to the portion facing the rear portion of the pillar 50 outer wall portion 50A in the vehicle width direction, that is, the outer portion in the vehicle width direction. Between the rear part of the part 50 </ b> A and the front end part 24 </ b> A of the impact beam 24, a site on the vehicle body front side of the bulging part 32 </ b> A of the convex part 32 formed on the door inner 16 is disposed.

  Next, the operation of this embodiment will be described.

  In the side door structure of the present embodiment, as shown in FIG. 2, in the event of a side collision, for example, the bumper 60 of another vehicle side impacts the side door 12 and the impact beam 24 extends from the vehicle width direction outer side to the vehicle width direction inner side ( When pressed in the direction of arrow A in FIG. 2, the door side portion 38 receives the input load from the impact beam 24 at a portion of the door inner 16 that faces the rear portion of the outer wall portion 50A of the pillar 50 in the vehicle width direction. , 40 are formed and can be transmitted to the pillar 50 only through the door hinge 34 having the hinge shaft 36 penetrating the front end 24A of the impact beam 24.

  As a result, it is possible to suppress deformation of the side door 12 toward the vehicle interior around the hinge shaft 36 at the time of a side collision. For this reason, the vehicle body generated load at the time of the side collision of the side door 12 can be increased.

  Further, since the tensile load generated in the impact beam 24 in the middle and the latter half of the side collision can be directly transmitted to the pillar 50 via the hinge shaft 36, the load generated in the vehicle body in the middle and the latter half of the side collision can be increased.

  Further, in the present embodiment, the front end portion 24A of the impact beam 24 can be extended to a portion facing the rear portion of the pillar 50 outer wall portion 50A in the vehicle width direction, so that the impact beam 24 and the pillar 50 are wrapped in a side view. Can be increased. As a result, since the impact beam 24 can be supported by the pillar 50 at the time of a side collision, the generated load of the impact beam 24 at the time of a side collision can be further increased.

  Further, in the present embodiment, the outer peripheral edge portion 14A of the door outer panel 14 is coupled to the outer peripheral edge portion 16A of the door inner 16 by hemming, and the hemming portion 12A at the front edge of the side door 12 extends along the longitudinal direction of the vehicle body. The predetermined angle θ1 is inclined inward in the vehicle width direction with respect to the straight line L1. As a result, as shown in FIG. 5, when the door outer panel 14 is deformed in the vehicle width inward direction (arrow B direction in FIG. 5) at the time of a side collision, the hemming portion 12A is caused by the tensile load F generated on the door outer panel 14. The vehicle further falls in the vehicle width inner direction (the direction of arrow C in FIG. 5). For this reason, when the hemming portion 12A further falls in the vehicle width inner direction (the direction of arrow C in FIG. 5), the outer peripheral edge portion 14A of the door outer panel 14 and the outer peripheral edge portion 16A of the door inner 16 are difficult to come off. Therefore, the tensile load generated on the door outer panel 14 is increased, and the generated load of the side door 12 can be further increased by using this tensile load.

  Further, by inclining the hemming portion 12A at the front edge of the side door 12 by a predetermined angle θ1 inward in the vehicle width direction with respect to the straight line L1 along the longitudinal direction of the vehicle body, as shown in FIG. The gap M between the rear end portion 64A of the member 64 such as a fender and the hemming portion 12A can be reduced.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to the above-described embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in the above embodiment, the door inner 16 is made of a cast product such as aluminum or magnesium, but the material of the door inner 16 may be other materials. For example, as shown in FIG. 6, the door inner 16 may be made of a metal plate such as iron, and the door side portion 68 of the door hinge 34 made of another member may be coupled to the door inner 16. In addition, the code | symbol 70 of FIG. 6 has shown the color | collar fixed to the door side part 68 of the door hinge 34. FIG.

  Further, as shown in FIG. 7, in the hemming portion 12 </ b> A of the side door 12, a rib 16 </ b> D protruding outward in the vehicle width direction may be formed at the base of the outer peripheral edge portion 16 </ b> A of the door inner 16. In this case, the outer peripheral edge portion 14A of the door outer panel 14 is caught by the rib 16D when the door outer panel 14 is deformed in the vehicle width inward direction as shown by a two-dot chain line in FIG. As a result, the outer peripheral edge portion 14A of the door outer panel 14 and the outer peripheral edge portion 16A of the door inner 16 are more difficult to come off. For this reason, the tensile load which generate | occur | produces in the door outer panel 14 becomes large, and the generated load of the side door 12 can further be enlarged by using this tensile load.

  Moreover, in the said embodiment, although the impact beam 24 was comprised with the cross-sectional circular pipe material, the cross-sectional shape and material of the impact beam 24 are good also as another cross-sectional shape and material.

1 is a cross-sectional view seen from above a vehicle body showing a side door structure according to an embodiment of the present invention. It is sectional drawing seen from the vehicle body front which shows the side door structure which concerns on one Embodiment of this invention. It is the perspective view seen from the vehicle body upper diagonal inside showing the front end lower part of the door inner of the side door structure concerning one embodiment of the present invention. It is the perspective view seen from the vehicle body downward slant inner side front which shows the front end lower part of the door inner of the side door structure concerning one embodiment of the present invention. It is effect | action explanatory drawing which shows the deformation | transformation of the hemming part of the side door structure which concerns on one Embodiment of this invention. It is sectional drawing corresponding to FIG. 2 which shows the principal part of the side door structure which concerns on other embodiment of this invention. It is sectional drawing corresponding to FIG. 1 which shows the side door structure which concerns on other embodiment of this invention.

Explanation of symbols

12 Side Door 12A Side Door Hemming Part 14 Door Outer Panel 16 Door Inner 24 Impact Beam 32 Door Inner Convex Part 32A Door Inner Convex Part 34 Door Hinge 35 Door Hinge Pillar Side 36 Hinge Shaft 38 Door Hinge Door Side 40 Door Hinge Door side portion 44 door hinge 46 hinge shaft 48 door hinge door side portion 50 pillar 50A vehicle width direction outer side wall portion of pillar

Claims (1)

A door inner that constitutes the compartment side of the side door;
A door side portion of a door hinge formed in a portion facing the outer wall portion in the vehicle width direction of the pillar in the door inner;
An impact beam extending along the front-rear direction of the door in the side door, and a front end extending to a portion facing the outer wall of the pillar in the vehicle width direction;
A hinge shaft penetrating at least one of the impact beam and the impact beam bracket and pivotally supported on a door side portion of the door hinge;
The side door structure characterized by having.

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