JP3997693B2 - Body structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle body structure that reinforces the periphery of a gate pillar portion using, for example, a reinforcement member.
[0002]
[Prior art]
A vehicle body of an automobile (vehicle) is required to have high rigidity and strength in order to ensure collision safety.
[0003]
Therefore, in the body of a wagon vehicle having a tailgate as shown in FIG. 8, as shown in FIG. 9, inside the gate pillar portion a extending in the vertical direction among the gate pillars forming the skeleton around the rear opening. The reinforcement member b is incorporated.
[0004]
Normally, in the gate pillar part a, as shown in FIGS. 9 and 11, an elongated panel part d forming the gate pillar part a and a subsequent lower panel part e of the quarter inner panel member c constituting the vehicle body, Among the side outer panel members f arranged side by side on the outer side of the quarter inner panel member c, the panel portions g and h facing the panel portions d and e and the rear ends of the panel members e and h An elongated reinforcement member b having a substantially hat-shaped cross section is arranged in a vertical direction in a lumen surrounded by a lamp assembly panel member i that is assembled so as to form an end wall. The flange portion j (shown only in FIGS. 10 and 11) of the member b is joined to the outer surface (side surface outside the vehicle) of the quarter inner panel member c to reinforce the periphery of the gate pillar portion a. . In addition, all joining is performed by welding.
[0005]
By the way, as shown in FIGS. 9 and 10, the periphery of the gate pillar portion a is joined to the lower inner side of the quarter inner panel member c at the end of the floor panel member k or below the floor panel member k. A panel-shaped quarter outer extension member m (hereinafter referred to as an extension panel member m) is joined to the lower portion of the panel portion h to form an extension panel portion for mounting the bumper cover n (note that the extension The member m may be formed integrally with the same member as the panel portion h).
[0006]
Therefore, conventionally, the lower end portion of the reinforcement member b is fixed to the outer surface (side surface on the vehicle outer side) of the panel portion e, avoiding the joint portion of the floor panel portion k where stress is easily concentrated. Specifically, the lower end portion of the reinforcement member b is joined to an upper point retracted from the joint portion with the floor panel portion k as shown by a solid line in FIG. 10, or a two-dot chain line in FIG. As shown, the reinforcement member b is extended downward, and the extended lower end is joined together with the lower end of the extension panel member m and the lower end of the panel portion e.
[0007]
[Problems to be solved by the invention]
By the way, when the reinforcement member b is joined, the rigidity strength of the lower portion of the gate pillar portion a, particularly the rigidity strength in the direction in which the vehicle body represented by the symbol S in FIG. Since the strength is only the joint portion extending in the longitudinal direction of the vehicle body, such as the portion where the panel portion h and the extension panel member m are joined (or the joint portion of the three members including the end of the reinforcement member), the strength tends to be insufficient. .
[0008]
Therefore, conventionally, as a countermeasure, a panel member having a large thickness is used as the panel member of each part of the gate pillar portion a to compensate for the rigidity strength that is insufficient due to the rigidity provided by the thickness of the panel member itself. ing. However, this reinforcement has a problem that the burden of material cost increases and the burden on processing increases, and it cannot be said that it is a good reinforcement.
[0009]
The present invention has been made paying attention to the above circumstances, and its object is to provide a simple reinforcement structure utilizing an existing reinforcement member, and to enhance the rigidity of the periphery to which the floor panel member is attached. To provide a structure.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the vehicle body structure according to claim 1 extends the lower side of the reinforcement member assembled between the inner panel member and the outer panel member to the lower end portions of the outer panel member and the inner panel member. The lower panel is joined to the lower inner surface of the outer panel member or the inner surface of the extension panel portion, and the lower end portion is joined together with the lower end portion of the inner panel member and the lower end portion of the outer panel member. A beam-like part was formed on the side of the.
[0011]
Thereby, the rigidity strength of the wall part around the lower part to which the floor panel member is joined, particularly the rigidity strength in the falling direction, can be increased by the beam-shaped part without increasing the thickness of the member.
[0012]
In the vehicle body structure according to claim 2, in addition to the above-mentioned object, in the case where the extension panel portion is a structure separately attached to the outer panel member, a joint mark is not seen, and the fitting member and the fitting member attached to the extension member are not visible. At this time, the intermediate portion of the reinforcement member can be reinforced without damaging the joint portion between the outer panel portion and the outer panel portion, and the extension panel member separated downward from the joint portion between the extension panel member and the outer panel member. It was made to be joined to the inner surface part.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on an embodiment shown in FIGS.
[0014]
FIG. 1 shows a rear portion of a side structure of a vehicle body 1 of a wagon car (vehicle) having a gate opening formed at a rear portion thereof that is opened and closed by, for example, a tailgate (not shown), and FIG. 2 shows an exploded view of the rear portion. ing.
[0015]
The structure of the rear portion will be described with reference to FIG. 2. In the figure, reference numeral 2 denotes a quarter inner panel member extending in the vertical direction. The quarter inner panel member 2 is formed with openings 3 to 5 for forming various parts such as a tire house, an entrance / exit and a rear side window. An elongated panel portion extending in the vertical direction is formed at the rearmost portion adjacent to the opening 5 of the rear side window. And the vehicle width direction edge part of the floor panel member 7 is joined to the inner surface (side surface inside the vehicle) on the lower side of the quarter inner panel member 2 as shown in FIG.
[0016]
Reference numeral 10 denotes a side outer panel member that is disposed on the outer side of the quarter inner panel member 2 so as to face each other. The side outer panel member 10 is also formed with openings 12 to 14 that face the openings of the tire house, the entrance / exit, and the rear side window. Further, a rear portion adjacent to the opening 3 of the tire house is cut out. A quarter outer extension member 16 (hereinafter referred to as an extension member 16), which is separate from the side outer panel member 10 and has a shape that follows the lower portion of the quarter inner panel member 2, is joined to this portion by welding. . The panel-like extension member 16 forms an extension portion to which a bumper cover 17 (corresponding to a fitting member) is attached at a rear portion adjacent to the opening of the tire house. The bumper cover 17 is attached so as to cover the outer surface of the extension member 16.
[0017]
The quarter inner panel member 2 and the side outer panel member 10 are joined to each other by using a flange portion protruding from the edge portion. Further, as shown in FIGS. 6 and 7, the rear end portion is joined by welding (by flange joining) with the lamp assembling panel member 4 interposed therebetween. Thus, a hollow wall portion T having the lamp assembly panel member 4 as an end wall is formed. At this time, a columnar portion extending in the vertical direction is formed at the rearmost end portion of the wall portion T, thereby forming the gate pillar portion 20 serving as a skeleton around the gate opening.
[0018]
The gate pillar portion 20, specifically, the elongated panel portion 2 a extending in the vertical direction at the rearmost end of the quarter inner panel member 2 and the wide portion extending downward continuously from the lower portion of the panel portion 2 b. Panel portion 2c (both corresponding to the inner panel member of the present application), the elongated panel portion 10a of the side outer panel member 10 facing the above and extending in the vertical direction, and continuously extending downward from the lower portion of the panel portion 10a. A wide panel portion 10b (including an extension portion: all corresponding to the outer panel member of the present application), and a lumen portion surrounded by the panel portion of the lamp assembly panel member 4 extending in the vertical direction forming an end wall. Includes a reinforcement member 22 and reinforces the gate pillar 20.
[0019]
The present invention is applied to the reinforcing structure by the reinforcement member 22.
[0020]
If the same structure is demonstrated, the reinforcement member 22 has comprised the substantially cross-sectional hat shape which has the flange part 22a in the peripheral part, and is elongated in the up-down direction. The entire reinforcement member 22 is accommodated over the entire length of the gate pillar portion 20 (from the upper end to the lowest end of the lumen portion). And from the lower stage to the upper stage of the reinforcement member 22, as shown in FIGS. 5 to 7, the flange portions 22 a on both sides of the reinforcement member 22 are formed on the outer surfaces of the panel portions 2 a and 2 b (side surfaces outside the vehicle). It is fixed by welding.
[0021]
Further, a portion of the reinforcement member 22 that extends to the lower side, for example, a panel portion slightly below the joint portion 23 between the extension member 16 and the side outer panel member 10 as shown in FIGS. 4 and 5, Similarly, it is joined to the inner surface (side surface of the vehicle inner side) of the extension member 16 that is spaced downward from the joint portion 23. In detail, the panel part which makes | forms the middle part of the said reinforcement member 22 is formed with the base 24 for joining closely contacted with the inner surface of the extension member 16, for example in the several places along the width direction. And the front-end | tip part of each base part 24 for joining overlaps with the inner surface of the extension member 16 below the junction part 23, and is joined to the inner surface by welding. Further, the lower end portion of the reinforcement member 22 is inclined toward the vehicle inner side and extends to a mating portion between the quarter inner panel member 2 and the side outer panel member 10. And the flange part 22a of the lower end of this reinforcement member 22 is the flange part 16a currently formed in the lower end part of the extension member 16 and the flange part formed in the lower end part of the panel part 2b, as FIG. 4 shows. It is joined together by welding so as to be sandwiched between 2c.
[0022]
By joining with the middle part and the lower end part of the reinforcement member 22, as shown in FIGS. 3 to 5, on the side of the floor panel member 7 (side adjacent to the joint 7 a of the floor panel part 7), The cross-section extending along the wall surface of the wall portion T, which is a beam-shaped portion having a closed cross section formed by the joint portion 22b in the middle of the reinforcement member 22 and the joint portion 22c at the lower end portion of the reinforcement member 22, is substantially triangular. A beam H having a closed cross section is formed.
[0023]
That is, the rigidity strength of the beam-shaped portion H is added to the rigidity strength provided by the joint portion 7 a between the floor panel member 7 and the quarter inner panel member 2.
[0024]
Therefore, the rigidity strength around the lower portion of the gate pillar portion 20 is effectively reinforced by utilizing the reinforcement member 22. In particular, the reinforcement is effective for reinforcing the rigidity strength in the direction S in which the vehicle body 1 is tilted in the vehicle width direction as shown in FIG.
[0025]
In addition, this reinforcement does not ensure the rigidity and strength from the plate thickness of the reinforcement member 22, but ensures the rigidity and strength at the beam-like structural portion obtained by the joining method of the reinforcement member 22. There is no need to use a large panel member for the vehicle body 1 or to process a panel member having a large thickness, and the burden of material costs and processing costs is small. In addition, the reinforcement can be dealt with only by the joining method of joining the middle part of the reinforcement member 22 to the inner surface of the extension member 16 and joining the lower end part to the inner / outer panel members 2, 10. In terms of cost.
[0026]
In particular, when a separate extension member 16 is used, the structure in which the middle portion of the lower portion of the reinforcement member 22 is joined to the same inner surface is a bumper attached so that the trace of the joint portion covers the outer surface of the extension member 16. Since it is hidden by the cover 17, the point of appearance may be sufficient. Moreover, in the case of the same joining, the gap between the joining portion U (shown only in FIGS. 1 and 4) formed by the edge portion of the bumper cover 17 attached to the extension member 16 and the outer panel portion is not damaged. That is, normally, the reinforcement member 22 assembled to the vehicle body 1 is a panel member having a thickness larger than the plate thickness of the skeleton panel member such as the inner panel member 2 or the outer panel member 10. For this reason, if the middle part of the reinforcement member 22 is joined at the part closest to the joining part U, that is, the joining part 23 joining both the side outer panel member 10 and the extension member 16, However, when the joint is joined to the inner surface of the extension member 16 away from the joint 23, the occurrence of distortion is small. Since it can be suppressed, good reinforcement can be performed without impairing the appearance of the mating portion U.
[0027]
The present invention is not limited to the above-described embodiment, and various modifications may be made without departing from the spirit of the present invention. For example, in the embodiment, the middle part of the lower portion of the reinforcement member is joined to the inner surface of the extension member. However, the present invention is not limited to this, and the same effect can be obtained by joining to the inner surface of the outer panel member immediately above the extension member. Furthermore, in one embodiment, the structure of joining an extension member different from that to the outer panel member as an extension portion has been described as an example. However, the present invention is not limited to this, and an extension portion integrated with the outer panel member is not limited to this. The present invention may be applied to the formed vehicle body structure. Further, in one embodiment, the rigidity strength is increased by applying it to the wall portion around the lower portion of the gate portion. However, the present invention may be applied to other vehicle body portions and other vehicle body portions to which the fitting members are attached. Good.
[0028]
【The invention's effect】
As described above, according to the invention described in the first aspect of the present invention, the existing reinforcement member is utilized according to the method of joining the lower portion of the reinforcement member, and the beam is formed on the side of the floor panel member. Since the portions are formed, it is possible to effectively reinforce the rigidity strength around the lower portion to which the floor panel member is attached, particularly the rigidity strength in the direction in which the vehicle body collapses, without increasing the plate thickness of the members constituting each portion of the vehicle body.
[0029]
In addition, since the reinforcement can be dealt with only by the method of joining the reinforcement members, the structure is simple and the cost is low.
[0030]
According to the second aspect of the present invention, in the case where the extension panel portion is attached to the outer panel member separately, it is not necessary to see the joint trace in the middle portion, and the fitting member attached to the extension member and the same fitting member There is an effect that reinforcement can be performed without damaging the joint portion between the edge portion and the outer panel portion.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a rear portion having a gate pillar portion of a vehicle body structure according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the vehicle body structure.
FIG. 3 is a perspective view of an inner panel member to which a reinforcement member is assembled as viewed from the outside.
4 is a cross-sectional view taken along line AA in FIG.
FIG. 5 is a cross-sectional view taken along line BB in FIG.
6 is a cross-sectional view taken along the line CC in FIG.
7 is a cross-sectional view taken along the line DD in FIG.
FIG. 8 is a perspective view showing a rear side of a vehicle body having a conventional gate pillar portion.
FIG. 9 is an exploded perspective view of the vehicle body part.
10 is a cross-sectional view taken along line XX in FIG.
11 is a sectional view taken along line YY in FIG.
[Explanation of symbols]
1 ... body 2 ... quarter inner panel member (inner panel member)
7 ... Floor panel member 10 ... Side outer panel member (outer panel member)
16: Quarter outer extension member (extension member)
17 ... Bumper cover (fitting member)
20 ... Gate pillar 22 ... Reinforcement member H ... Beam-shaped part.

Claims (2)

An inner panel member that is disposed along the vertical direction and has a floor panel member joined to the side surface on the inner side of the lower vehicle;
The wall of the inner panel member is assembled to face each other so as to face each other, and an extension panel portion for attaching a fitting member is formed on a portion facing the lower inner panel portion of the floor panel member. An outer panel member;
A reinforcement member built in between the inner panel member and the outer panel member;
The reinforcement member has a lower portion that extends to the lower end portions of the two panel members, a middle portion of the lower portion is joined to the inner surface of the lower side of the outer panel member or the inner surface of the extension panel portion, and the lower end portion of the reinforcement member. A vehicle body structure characterized by being joined together with a lower end portion of a panel member and a lower end portion of the outer panel member so as to form a beam-like portion on a side of the floor panel member. The extension panel portion is formed by joining a separate extension panel member to the outer panel member,
2. The vehicle body structure according to claim 1, wherein an intermediate portion of the reinforcement member is joined to an inner surface of the extension panel member spaced downward from a joint portion between the extension panel member and the outer panel member. .

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