KR0130810B1 - Reinforced structure of vehicle rear door - Google Patents

Abstract

(purpose)

Provided is a vehicle rear door reinforcement body structure which can effectively transmit the load input to the rear door at the time of side collision to the vehicle body side and can suppress the intrusion of the rear door into the interior of the vehicle body more conventionally.

(Configuration)

The guard bar 5 is arranged in the rear door 1 for opening and closing the rear door opening 21 of the vehicle body along the front and rear directions, while the vehicle rear side of the peripheral portion 22 of the rear door opening 21 is arranged. A portion is formed at the front side of the rear wheel house 23, and the rear wheel house 23 has a body structure formed by joining the flange portions 24a and 25a between the wheel house outer part 24 and the wheel house inner part 25. In this case, a swelling portion 25b protruding inside the rear door opening 21 is formed in a part of the inner portion of the wheel house 25 so that the rear end portion 5a of the guard bar 5 overlaps the vehicle side collision. The rear end 5a was set to engage the bulge 25b.

Description

Vehicle rear door reinforcement body structure

The present invention relates to an improved vehicle body structure in order to prevent intrusion of the rear door into the interior of a vehicle during a vehicle side collision.

(Conventional technology)

Conventionally, as this kind, there exists a thing like that shown in FIG. 3 and FIG. In the figure, reference numeral 1 denotes a rear door, and the rear door 1 has an outer shape formed by the door outer panel 2 and the door inner panel 3. The rear door 1 is provided with armrests 4 arranged inside the vehicle compartment, and the guard bars 5 are arranged in the door 1 at approximately the same height as the armrest 4 along the front and rear directions of the vehicle. It is.

On the other hand, the vehicle rear side portion of the opening circumferential edge portion 7 of the rear door opening 6 opened and closed by the rear door 1 is located at the front side of the rear wheel house 8 as shown in FIG. It is intended to be constructed.

The rear wheel house 8 is composed of a wheel house outer part 9 and a wheel house inner part 10. The wheelhouse outer portion 9 and the wheelhouse inner portion 10 are assembled by joining the flange portions 9a and 10a formed at the peripheral edge portion thereof.

Reference numeral 11 denotes a rear fender that forms the outer surface of the vehicle body.

At the time of the vehicle side impulse, the deformation of the rear door 1 is suppressed by the guard bar 5 and the intrusion into the vehicle interior is suppressed.

As another structure for preventing the intrusion of the door into the interior of the vehicle at the time of a vehicle side collision, there is one similar to that described in FIG. That is, the engaging part 13a which has an uneven | corrugated shape is formed in the lower end part of the door 13 of a vehicle, and the uneven | corrugated engaging part 14a by which this engaging part 13a engages is a side seal 14 ) Is formed.

In the event of a vehicle side collision, the door 13 moves toward the interior of the vehicle from the state shown in FIG. 5A to the state shown in FIG. It is engaged with the to-be-engaged part 14a. This engagement suppresses intrusion of the door 13 into the interior of the vehicle interior.

However, in the conventional FIG. 3 and FIG. 4, the path transmitted from the rear end of the guard bar 5 to the vehicle body side at the time of the vehicle side collision is the flange portion of the rear wheel house 8 from this rear end. Since the flanges 9a and 10a are easily deformed because the paths to 9a and 10a are taken, in order to effectively bear the collision load on the side of the vehicle, it is necessary to improve the plate thickness or to lock the door lock device (not shown). It is necessary to prevent the intrusion into the vehicle interior of the door 13 by making it solid.

In addition, as shown in FIG. 5, since it engages with the vehicle body side at the lower end of the door 13, it engages in the position away from the vicinity of both ends of the guard bar 5 which is the most effective place. There is a problem in that the side collision load input to the (l3) side cannot be effectively transmitted to the vehicle body side.

Accordingly, an object of the present invention is to provide a vehicle rear door reinforcement body structure that can effectively transmit the load input to the rear door at the time of side impact from the vehicle body side and can suppress the intrusion into the interior of the rear door more conventionally. Doing.

(Means to solve the task)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and guard bars are arranged in the rear doors to open and close the rear door openings of the vehicle body, and the rear wheel house of the vehicle rear portion of the rear door opening is arranged. The rear wheel house has a rear body structure formed by joining a flange portion between a wheel house outer portion and a wheel house inner portion, wherein the rear wheel house forms a protrusion that protrudes into the rear door opening in a portion of the wheel house inner portion. The rear end portion of the guard bar is overlapped, and the rear end portion of the vehicle is configured to have a rear end portion reinforcement body structure set so that the rear end portion is engaged with the protruding portion in the event of a vehicle side collision. In addition, the upper surface of the protrusion and the upper surface of the armrest installed on the inside of the vehicle interior of the rear door may be set at about the same height, and the front edge of the upper surface of the protrusion and the rear edge of the armrest may be approached. have.

1 is a cross-sectional view taken along the line A-A of FIG. 2 illustrating one embodiment of the present invention.

2 is a perspective view of a part of a vehicle interior side illustrating the embodiment.

3 is a perspective view corresponding to FIG. 2 illustrating a conventional example.

4 is a cross-sectional view taken along line B-B in FIG. 3 illustrating a conventional example.

Fig. 5 is a sectional view along the vertical direction on the lower door end side illustrating another conventional example.

* Explanation of symbols for main parts of the drawings

1: rear door, 4: armrest,

4a, 25c: upper surface part, 4b: rear edge part,

5: guard bar, 5a: rear end,

21: rear door opening, 22: opening circumference edge,

23: rear wheel house, 24: outside the wheel house,

25: inside the wheel house, 25b: the protrusion,

25d: Shear edge.

According to this means, the load input to the rear door at the time of the vehicle side collision is mainly burdened by the guard bar, so that deformation is suppressed, and the load is transmitted from the rear end of the guard bar to the rear wheel house.

In this case, since the rear end of the guard bar overlaps the protrusion of the inner portion of the wheel house, the load from the rear end of the guard bar is input to this part. Therefore, as compared with the conventional input to the flange portion, the portion of the protruding portion exhibits a closed cross-sectional structure, and since the rigidity is improved, the load can be effectively applied. As a result, intrusion of the rear door into the vehicle interior can be suppressed more conventionally. In addition, since the upper surface of the projection is set to be approximately the same height as the upper surface of the armrest of the rear door, the rear edge of the upper surface of the projection and the front edge of the upper surface of the projection of the projection are set so as to be used as part of the armrest. At the same time, apparently no discomfort.

Example

EMBODIMENT OF THE INVENTION Hereinafter, the Example of this invention is described based on drawing.

1 and 2 illustrate one embodiment of the present invention. The same or equivalent member as before is described with the same reference numeral.

First, when the structure is described, reference numeral 1 in the drawing denotes a rear door, and the rear door 1 has an outer shape formed by the door outer panel 2 and the door inner panel 3. The rear door 1 is provided with armrests 4 arranged in the interior of the vehicle compartment, and the guard bars 5 are arranged in the door 1 at the same height as the armrest 4 in the front and rear directions of the vehicle. It is.

On the other hand, the vehicle rear side portion of the opening circumferential edge portion 22 of the rear door opening 21 opened and closed by the rear door 1 is configured at the front side of the rear wheel house 23. This rear wheel house 23 is composed of a wheel house outer part 24 and a wheel house inner part 25 as shown in FIG. The wheelhouse outer part 24 and the wheelhouse inner part 25 are formed in a substantially arcuate shape, and the flange parts 24a and 25a formed in the peripheral edge part are joined together, and are attached.

More specifically, a protrusion 25b protruding inside the rear door opening 21 is formed at a height substantially equal to the guard bar 5 of the wheelhouse inner portion 25. The part of this protrusion part 25b is the wheelhouse outer side part 24, and has shown the closed cross-sectional structure.

As a result, the protrusion 25b and the rear end 5a of the guard bar 5 are set so as to overlap each other in the range of the first degree intermediate distance L, and when the vehicle side collision occurs, The rear end 5a is engaged with the protrusion 25b.

Moreover, the upper surface part 25c of this protrusion part 25b is formed in planar shape, the height is set to the substantially same height as the upper surface part 4a of the armrest 4, and the rear end edge of this upper surface part 4a is carried out. The front end portion 25d of the upper portion 25c of the portion 4b and the protrusion 25b is set to approach.

In addition, a finisher (not shown) is arranged in the interior of the vehicle interior of the wheelhouse inner portion 25 so that the X portion between the protrusion 25b and the armrest 4 shown by the two-dot chain line in the first diagram is filled with the finisher. have.

Next, the operation will be described.

The load input to the rear door 1 at the time of the vehicle side collision is mainly burdened by the guard bar 5, so that deformation of the rear door 1 itself is suppressed, and from the rear end 5a of the guard bar 5 to the rear. The load is transmitted to the wheel house 23.

In this case, since the rear end 5a of the guard bar 5 overlaps with the protrusion 25b of the wheelhouse inner side 25, the load from the guardbar rear end 5a is input to this part. Therefore, as compared with the conventional input to the flange portion, this projecting portion 25b part has a closed cross-sectional structure, and since the rigidity is improved, the load can be effectively applied.

As a result, intrusion of the rear door 1 into the vehicle interior can be suppressed more conventionally.

Moreover, the upper surface part 25c of the protrusion part 25b is made substantially the same height as the upper surface part 4a of the armrest 4 of the rear door 1, and the rear edge part 4b of this upper surface part 4a, and Since the front end portion 25d of the upper surface portion 25c of the protrusion 25b is set to approach, the protrusion 25b can be used as a part of the armrest 4 and at the same time, it gives a sense of discomfort in appearance. none.

In addition, the finisher arranged in the interior of the wheelhouse inner portion 25 to fill the X portion between the armrest 4 and the protrusion 25b further enhances the sense of unity between the armrest 4 and the protrusion 25b. Can be.

As described above, according to the present invention, since the rear end of the guard bar overlaps the protrusion of the inner portion of the wheel house, and the load from the rear end of the guard bar is input to the portion of the protrusion at the collision of the vehicle side, it is inputted to the flange portion as in the prior art. Compared with this, this projected portion has a closed cross-sectional structure and has improved rigidity, so that it can effectively bear a load. As a result, intrusion of the rear door into the vehicle interior can be suppressed more conventionally.

In addition, since the upper surface of the protrusion is set to have approximately the same height as the upper portion of the armrest of the rear door, the protrusion is set to approach the rear edge of the upper surface and the front edge of the upper surface of the protrusion, so that the protrusion can be used as part of the armrest. At the same time, we show practically advantageous effect that we do not give discomfort in appearance.

Claims (2)

Guard bars are arranged in the rear doors that open and close the rear door openings of the vehicle body along the front and rear directions, while the vehicle rear side portion of the peripheral portion of the rear door openings is formed at the front side of the rear wheel house. In the vehicle body structure is formed by joining the flange portion between the wheelhouse outer portion and the wheelhouse inner portion, a portion of the wheelhouse inner portion to form a projection protruding inside the rear door opening to overlap the rear end of the guard bar, The rear door portion reinforcement body structure for a vehicle according to claim 1, wherein the rear end portion is set to be engaged with the protruding portion during a collision. The method of claim 1, wherein the upper surface of the protrusion and the upper surface of the armrest installed on the interior of the rear door are set at about the same height, and the front edge of the upper surface of the protrusion and the rear edge of the armrest are approached. A vehicle rear door reinforcement structure.