JP4122837B2 - Body structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle body structure in which a plurality of lean hose members are housed in a skeleton portion of a door opening.
[0002]
[Prior art]
In automobiles, in order to ensure safety, the rigidity of the opening edge of the door opening formed in the vehicle body is ensured. Normally, the opening edge of the door opening formed in the side outer panel has a cross-sectional hat shape, and a substantially cross-sectional inner panel member is flanged along this opening edge to form a closed cross-section skeleton. To be done.
[0003]
Recently, in order to ensure higher rigidity and strength, not only the lean hose member for pillars that makes the main reinforcement in the skeleton part of the closed section, but also a bulkhead that locally reinforces each part together with it. A lean hose member for local reinforcement is assembled.
[0004]
By the way, since each member around the door opening is made of a metal panel member, generally, welding, mainly spot welding, is used for joining the panel members constituting the skeleton part and joining the lean hose member. Used.
[0005]
However, in spot welding, when two panel members or three panel members are stacked and welded at a time, the required bond strength is sufficiently secured, but four panel members or more panel members are stacked. When welding at a time, the required bond strength may not be ensured.
[0006]
Therefore, conventionally, when two lean hose members for main reinforcement and local reinforcement are assembled together between an outer panel member and an inner panel member having a closed cross section, for example, as disclosed in JP-A-2000-272538 The lean hose member of the main reinforcement is sandwiched between the flanges formed on both sides of the lean hose member between the flanges on both sides of the substantially hat-shaped outer panel member and the flanges on both sides of the substantially hat-shaped inner panel member, The three-way flange is spot-welded, and the remaining locally reinforcing lean hose member is, for example, attached to the inner surface of the main reinforcing lean hose member.
[0007]
[Problems to be solved by the invention]
By the way, in an automobile, it is required to ensure safety in a considerably severe collision such as an offset side collision.
[0008]
In order to ensure safety at the time of the collision, it is required to improve the bending rigidity and torsional rigidity of the vehicle body. For this reason, it is necessary to improve the vehicle body rigidity by locally reinforcing the skeleton of the door opening to improve the bending rigidity and torsional rigidity of the vehicle body.
[0009]
However, because the locally-reinforced lean hose member cannot be spot welded with many members overlaid due to the above-mentioned welding restrictions, the thickness of each member is increased as a means of ensuring rigidity. The vehicle body strength required is improved and the rigidity is improved.
[0010]
However, using such a member having a thick plate thickness significantly increases the weight of the vehicle body or imposes a considerable cost burden.
[0011]
The present invention has been made by paying attention to the above circumstances. The object of the present invention is to provide a vehicle body structure capable of ensuring the rigidity and strength of the vehicle body required for safety in severe collisions while reducing weight and cost. Is to provide.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, there is provided a flange coupling portion that forms an end portion of a region of the side outer panel in a region where a lean hose member for local reinforcement is disposed. A retreating part that is retracted from the side outer panel is formed, and instead of the retreated side outer panel end part, the end part of the local reinforcement lean hose member incorporated in the skeleton part is the main reinforcement lean hose member and inner panel member. The flange of the first lean hose member is sandwiched between the flange joints of the flange of the side outer panel and the flange of the inner panel member, and the retracting portion of the side outer panel is The edge part employ | adopted the structure joined to the said 1st lean hose member.
[0013]
When such a main reinforcement lean hose member and a local reinforcement lean hose member are flange-coupled to the inner panel member, high rigidity and strength contributing to bending and torsional rigidity of the vehicle body are ensured.
[0014]
Therefore, the rigidity and strength around the door opening can be increased without increasing the plate thickness.
[0015]
Side invention according to claim 2, most rigid without decreasing the flourishing seen, the rigidity of the portion strength is required, in order to increase the strength, the retracting section is corresponding to the region of the front door hinges are arranged A configuration is adopted in which the second lean hose member is flanged to the flange connecting portion of the first lean hose member and the inner panel member at the point of the retracted side outer panel.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below based on the first embodiment shown in FIGS.
[0017]
FIG. 1 shows the appearance of the front side of a side structure (side structure) constituting the side of a car body, for example, a car body of a four-door passenger car having a front door and a rear door on both sides, and FIG. A cross section taken along the line AA, FIG. 3 shows an exploded view of the side structure.
[0018]
In the figure, reference numeral 1 denotes a side outer panel constituting the outermost side of the side structure. The side outer panel 1 is composed of a metal panel member formed into an outer shape that follows the shape of the side portion of the vehicle body. The side outer panel 1 is continuous with the lower part of the front pillar outer panel part 1a, and a part of a front pillar lower panel part 1b and a fender panel 1c (only part of which is shown) forming the base side (lower part) of the front pillar is integrally formed. It is.
[0019]
In the center of the side outer panel 1, an opening is formed which is partitioned into a front side and a rear side by an elongated center pillar outer panel portion 2a extending in the vertical direction. The front side opening surrounded by the front pillar outer panel portion 1a, the front pillar lower panel portion 1b, and the side sill outer panel portion 1c serves as a front entrance / exit 3a. The rear pillar outer panel portion (not shown) and the rear side surrounded by the side sill outer panel portion 1c The opening is a rear entrance / exit 3b (both corresponding to the door opening of the present application).
[0020]
The front pillar outer panel portion 1a, the front pillar lower panel portion 1b, the center pillar outer panel portion 2a, the rear pillar outer panel portion (not shown), and the side sill outer panel portion 1c are all formed in a cross-sectional hat shape having flanges 5 on both sides in the width direction. .
[0021]
Of these, the front pillar outer panel portion 1a and the front pillar lower panel portion 1b are combined with front pillar lower inner panel members 4a and 4b and a front pillar upper inner panel member 4c as shown in FIG. A center pillar inner panel portion (not shown) is combined with the center pillar outer panel portion 2a. A rear pillar inner panel portion (not shown) is combined with a rear pillar outer panel portion (not shown). A side sill inner panel portion (not shown) is combined with the side sill outer panel portion 1c. Each panel member is formed in a cross-sectional hat shape having flanges 6 on both sides in the width direction. And each inner panel member is joined by welding of the flanges 5 and 6, for example, spot welding. Thereby, the closed cross-sectional shape formed by combining the hat-shaped cross section of the skeleton, that is, the side outer panel 1 and the hat-shaped cross section of each inner panel member, over the entire opening edge of the front entrance / exit 3a and the rear entrance 3b. A skeleton 7 is formed.
[0022]
Among the skeleton portions 7 surrounding the entrances 3a and 3b, the skeleton portion of the front pillar, specifically, the front pillar outer panel portion 1a and the front pillar lower panel portion 1b, the front pillar lower inner panel portions 4a and 4b, and the front pillar. As shown in FIG. 3, a front pillar lower hose member 8 (corresponding to the first lean hose member of the present application) and a front pillar upper allied hose member 9 are incorporated between the upper panel member 4c and the upper panel member 4c. ing. In addition, a bulkhead member 10 (corresponding to the second lean hose member of the present application) for carrying out local reinforcement is incorporated together with the front pillar lower line hose member 8 on the lower side of the skeleton portion. The lean hose members 8 and 9 and the bulkhead member 10 are made of metal panel members.
[0023]
Specifically, the front pillar lower line hose member 8 is for a door hinge that is formed in a substantially cross-sectional hat-shaped cross-sectional portion 11 extending in the vertical direction and a flange portion that greatly extends to the entrance / exit 3a side of the cross-sectional portion 11. The support seat 12 is provided. The support seat 12 is a portion to which a hinge 13a (shown by a two-dot chain line in FIG. 2) for opening and closing the front door 13 (shown by a two-dot chain line in FIG. 2) is attached. As shown in FIG. 2, the flanges 14 formed on both sides of the front pillar lower line hose member 8 in the longitudinal direction (width direction) of the vehicle body are each flange 5 of the front pillar lower outer panel member 1b and the front pillar lower inner panel portion. 4a and 4b are sandwiched between the coupling portions (corresponding to the flange coupling portions) of the flanges 6a and 4b. Then, by spot welding these three flanges at once, the entire front pillar lower line hose member 8 is assembled between the front pillar lower outer panel member 1b and the front pillar lower inner panel portions 4a and 4b. The rigidity and strength of the skeleton 7 are increased.
[0024]
The bulkhead 10 is assembled, for example, in the middle of the front pillar lower line hose member 8. The bulkhead 10 is a member used to transmit an impact from the front of the vehicle body to the skeleton 7 through a front side member (not shown), for example, and provides rigidity and strength to withstand the transmitted impact. The bulkhead 10 has, for example, a U shape that is bent up and down as shown in FIG. Further, flanges 16 are formed on the peripheral edges of the pair of side walls 15b rising from the bottom surface 15a. A flange 17 extending toward the entrance / exit 3a is formed at the end of the bottom surface 15a on the entrance / exit 3a side. Then, as shown in FIG. 2, the bulkhead 10 is joined by, for example, spot welding so that the flanges 16 and the inner surfaces of the cross section 11 overlap each other, and is assembled in the middle stage in the front pillar lower outer panel member 8. is there. That is, the bulkhead 10 increases the rigidity and strength of the required location.
[0025]
When the bulkhead 10 (lean hose member for local reinforcement) is incorporated into the skeleton part 7 together with the front pillar lower hose member 8, the inner surface of the front pillar lower hose member 8 is usually subjected to restrictions of spot welding. It is hard to say that it is forced to join only and is assembled with sufficient strength.
[0026]
However, the present embodiment establishes a structure in which the bulkhead 10 is also attached to the flange joint portion between the lean hose member 8 and the inner panel member 4b as shown in FIGS. The point has been improved.
[0027]
Explaining this point, for example, the end of the front pillar lower outer panel portion 1b on the entrance / exit side is, for example, as shown in FIGS. 1 and 3, from the flange end to the front side so that the entire support seat 12 is exposed to the outside. It is cut out to the vicinity of the cross section 11 which is the middle. By forming the notch 18, the end of the outer panel portion 1b in the region where the bulkhead 10 (for local reinforcement) is assembled is retracted. In addition, since the exposed part is the part concealed by the end surface of the front side of the front door 13 or the support seat 12 concealed by the inner surface of the front door 13, a decrease in appearance can be suppressed.
[0028]
And the flange 19 formed in the front-end | tip part of this notch part 18 (equivalent to a retracting part) is welded to the outer surface of the cross-sectional part 11. FIG. Thus, the front pillar lower outer panel portion 1b in the region where the notch 18 is provided is closed in cross-section together with the flange coupling portion on the front side.
[0029]
Further, as shown in FIG. 2, the flange 17 on the entrance / exit 3a side of the bulkhead 10 is sandwiched between the flange portion 14 of the front pillar lower line hose member 8 and the flange 6 of the front pillar lower panel portion 1b. These three flanges are joined by welding, for example, spot welding. That is, instead of the notched end portion of the side outer panel, the end portion of the bulkhead 10 is joined to the flange coupling portion of the front pillar lower inner panel member 4b and the front pillar lower line hose member 8. Thus, the main reinforcing front pillar lower hose member 8 and the locally reinforcing bulkhead 10 which are not related to each other are joined together in a continuous manner in relation to the front pillar lower inner panel member 4b by flange connection.
[0030]
Thereby, the mutual coupling force of the lean hose members 8 and 9 is increased, and high rigidity and strength contributing to bending and torsional rigidity of the vehicle body are ensured.
[0031]
Therefore, it is possible to increase the rigidity and strength around the entrances 3a and 3b (door openings) without increasing the plate thickness, and to be able to withstand severe impacts while reducing weight and cost. The rigidity and strength can be secured.
[0032]
In addition, such a structure is adopted in the skeleton part to which the hinge 13a of the front door 13 is assembled, so that the built-in objects are not exposed to the surrounding eyes, and the part where the most rigidity and strength are required (the impact from the front part of the vehicle body). The rigidity and strength of the portion to be received can be reasonably improved.
[0033]
In the above-described embodiment, the example using the lean hose member in which the support seat for supporting the door hinge is formed has been described. However, the pillar structure without the support seat as in the second embodiment shown in FIG. 4 is used. May also be applied. In FIG. 4, the same parts as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0034]
In the above-described embodiment, the front pillar lower hose member incorporated in the front pillar and the example using the bulkhead have been described. However, in the frame portion of the door opening to which the other lean hose members are assembled. You may apply. In this case, the structure as in the second embodiment is preferable. Of course, the present invention may be applied not only to a four-door car, but also to the car body of a car with any other number of doors.
[0035]
【The invention's effect】
As described above, according to the first aspect of the present invention, since the main reinforcing lean hose member and the local reinforcing lean hose member are flange-bonded together to the inner panel member, the lean hose members are mutually connected. The force increases, and high rigidity and strength that contribute to bending and torsional rigidity of the vehicle body can be secured.
[0036]
Accordingly, the rigidity and strength around the door opening can be increased without increasing the thickness of the member, and the rigidity and strength of the vehicle body that can withstand severe impacts can be ensured while reducing weight and cost.
[0037]
According to the second aspect of the present invention, the built-in object is not exposed to the surrounding eyes, and the rigidity and strength of the skeleton portion on the front door front side where rigidity and strength are most required can be improved reasonably.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an appearance of a front side of a side structure that is a main part of a first embodiment of the present invention.
2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is an exploded perspective view in which a side structure is disassembled.
FIG. 4 is a cross-sectional view for explaining the structure of a main part of a second embodiment of the present invention.
[Explanation of symbols]
1 ... Side outer panels 3a, 3b ... Entrance / exit (door opening)
4b ... Front pillar lower inner panel member (inner panel member)
7 ... skeleton part 8 ... front pillar lower line hose member (first lean hose member)
10 ... Bulkhead (second lean hose member)
18 ... Notch (retracting part).

Claims (2)

A side outer panel having a door opening and an opening edge of the door opening formed in a cross-sectional hat shape, and a flange with the side outer panel to form a closed cross-sectional skeleton along the opening edge of the side outer panel An inner panel member having a hat-shaped cross section to be formed, a first lean hose member for main reinforcement sandwiched between flange joint portions of the skeleton portion and assembled in the skeleton portion, and the first lean in the skeleton portion A second lean hose member for local reinforcement assembled together with the hose member,
A flange of the first lean hose member is sandwiched between flange joint portions of the flange of the side outer panel and the flange of the inner panel member;
In the side outer panel, in the region where the second lean hose member is disposed, a retreating part for retracting the end of the region from the flange coupling portion of the skeleton part is formed,
Instead of the end portion of the retracted side outer panel, the end portion of the second lean hose member is flanged to the flange connecting portion of the first lean hose member and the inner panel member,
The vehicle body structure characterized in that an end portion of the retracting portion of the side outer panel is joined to the first lean hose member . A side outer panel having a door opening and an opening edge of the door opening formed in a cross-sectional hat shape, and a flange with the side outer panel to form a closed cross-sectional skeleton along the opening edge of the side outer panel An inner panel member having a hat-shaped cross section to be formed, a first lean hose member for main reinforcement sandwiched between flange joint portions of the skeleton portion and assembled in the skeleton portion, and the first lean in the skeleton portion A second lean hose member for local reinforcement assembled together with the hose member, and an end portion of the region is disposed in a region of the side outer panel where the second lean hose member is disposed. A retracting portion that is retracted from the flange coupling portion of the skeleton portion is formed, and instead of the retracted end portion of the side outer panel, the end portion of the second lean hose member is replaced with the first lean hoist member. Causes flanged to the flange coupling portion of the scan element and the inner panel member,
The retracting portion is formed by a side outer panel portion corresponding to a region where the door hinge of the front door is disposed, and at the position of the retracted side outer panel, an end portion of the second lean hose member is connected to the first lean hose member. A vehicle body structure characterized in that it is flange-coupled to a flange coupling portion of the inner panel member .

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