JP7194488B2 - car body structure - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body structure having a header panel cantilevered on the front end of a roof panel so as to have a space therebetween.

Patent Literature 1 discloses a structure in which a rearview mirror (inner mirror) is supported by a header panel that is cantilevered on the front end of a roof panel. If the mounting portion of the inner mirror is set on the cantilevered header panel, the inner mirror is likely to vibrate due to the vibration of the vehicle body or the like. In Patent Document 1, an elastically deformable closure member is arranged to fill the gap between the roof panel and the rear end of the header panel.

JP 2016-49836 A

A central portion of the header panel in the vehicle width direction may bulge toward the rear of the vehicle. For example, when the camera is arranged above the windshield, the inner mirror may be pushed toward the rear side of the vehicle, and the mounting portion of the inner mirror on the header panel may bulge toward the rear side of the vehicle. If the mounting portion of the inner mirror bulges toward the rear of the vehicle, the distance between the joint where the header panel is cantilever supported on the roof panel and the mounting portion of the inner mirror becomes longer, and the rigidity of the mounting portion of the inner mirror deteriorates. , the inner mirror is more likely to vibrate.

It is desired to improve the rigidity of the portion of the header panel that bulges toward the vehicle rear side (the mounting portion of the inner mirror). In the technique described in Patent Document 1, the blocking member is only adhesively fixed to the lower surface of the roof panel, the mounting rigidity is low, and it is difficult to suppress the vibration of the inner mirror.

SUMMARY OF THE INVENTION Accordingly, one of the objects of the present invention is to provide a vehicle body structure capable of effectively improving the rigidity of a header panel that is cantilevered on the front end of a roof panel.

A vehicle body structure according to one aspect of the present invention includes:
A vehicle body structure comprising a header panel cantilevered at the front end of the roof panel so as to have a space between the header panel and the roof panel,
The header panel includes a bulging portion that bulges rearward of the vehicle at a central portion in the vehicle width direction,
a lateral reinforcement attached to the vehicle upper side surface of the header panel so as to straddle the bulging portion in the vehicle width direction;
a vertical reinforcement attached to the surface of the header panel on the vehicle upper side so as to span a first joint portion where the header panel is cantilever supported by the roof panel and an end portion of the bulging portion on the vehicle rear side; ,
a second joint portion joined to each other at the intersection of the horizontal reinforcement and the vertical reinforcement;
The bulging portion includes an inner mirror mounting portion in the vicinity of the vehicle lower side of the second joint portion.

The first joint portion is a joint portion between the header panel and the roof panel, and has high rigidity. In the vehicle body structure described above, the bulging portion is partitioned in the longitudinal direction of the vehicle by lateral reinforcement, and the first joint portion, which has high rigidity, is connected to the end of the bulging portion on the rear side of the vehicle by vertical reinforcement. , the rigidity of the bulging portion can be increased. In addition, in the vehicle body structure, the lateral reinforcement and the vertical reinforcement form an intersection, and a second joint portion that is joined to each other is provided at the intersection to further increase the rigidity of the bulging portion. can be done. As described above, the vehicle body structure includes the bulging portion even if the header panel is cantilevered on the front end portion of the roof panel and the inner mirror mounting portion of the header panel bulges toward the vehicle rear side. The rigidity of the header panel can be effectively improved. In particular, the vehicle body structure can effectively suppress the vibration of the inner mirror by providing the mounting portion for the inner mirror in the vicinity of the vehicle lower side of the second joint portion having high rigidity.

FIG. 1 is a schematic configuration diagram of the vehicle body structure of the embodiment as viewed from the outside of the vehicle with the roof panel removed. FIG. 2 is a cross-sectional view taken along line (II)-(II) in FIG.

A vehicle body structure according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. The same reference numerals in the drawings indicate the same names. In the following description, "front", "rear", "up", "down", "left", and "right" refer to directions relative to the front of the vehicle. In the figure, the arrow FR indicates the front side in the vehicle longitudinal direction, the arrow RR indicates the rear side, the arrow LH indicates the left side in the vehicle lateral direction (vehicle width direction), the arrow RH indicates the right side, the arrow UP indicates the upper side in the vehicle vertical direction, and the arrow LWR. indicates the bottom side.

〔overall structure〕
As shown in FIGS. 1 and 2, the vehicle body structure 1 of the embodiment includes a header panel 10 cantilevered on a front end portion 60a of a roof panel 60 (FIG. 2). The header panel 10 includes a bulging portion 12 that bulges toward the vehicle rear side at the center portion in the vehicle width direction. The header panel 10 has a mounting portion 120 (a region indicated by cross-hatching in FIGS. 1 and 2) for the inner mirror 100 (FIG. 2) on the bulging portion 12. As shown in FIG. In the vehicle body structure 1 of the embodiment, a horizontal reinforcement 20 and a vertical reinforcement 30 are attached to the vehicle upper side surface of the header panel 10, and the horizontal reinforcement 20 and the vertical reinforcement 30 are joined to each other. One of the characteristics is that it includes a joint portion (second joint portion 52, FIG. 2). One of the features of the vehicle body structure 1 of the embodiment is that a mounting portion 120 for the inner mirror 100 is provided in the vicinity of the vehicle lower side of the second joint portion 52 in the bulging portion 12 .

[Header panel]
As shown in FIG. 1 , the header panel 10 extends in the vehicle width direction and bridges between the front pillar inner panels 70 . The header panel 10 includes a body portion 11 extending in the vehicle width direction, and a bulging portion 12 that bulges from the body portion 11 toward the vehicle rear side at a central portion in the vehicle width direction.

As shown in FIG. 2, the header panel 10 has a front end portion 11a joined to a front end portion 60a of the roof panel 60 and a rear end portion 12b that is open. 2 shows a state in which the rear end portion 12b of the bulging portion 12 is open, the rear end portion of the header panel 10 is open over the entire vehicle width direction. A joint portion (first joint portion 51) where the roof panel 60 supports the header panel 10 in a cantilever manner is formed by welding. Welding methods include, for example, temper plug welding (SPW) and spot welding. In this example, the first joint portion 51 is formed by joining by SPW. The number of first joints 51 can be selected as appropriate.

Rear end 12b of header panel 10 is not joined to roof panel 60, as shown in FIG. Therefore, a space is formed between the rear end portion 12b of the header panel 10 and the roof panel 60. As shown in FIG. A ceiling member 90 is inserted into this space. Since the ceiling member 90 can be inserted into the space, the ceiling member 90 can be arranged in the upper part of the passenger compartment without using a clip or the like. FIG. 1 shows the vehicle body structure 1 viewed from the outside of the vehicle with the roof panel 60 and the ceiling member 90 removed.

As shown in FIG. 2, a windshield 80 is attached to the front end portion 60a of the roof panel 60 via a seal member (not shown). That is, the header panel 10 extends in the vehicle width direction along the upper edge of the windshield 80 (FIG. 2). In this example, the camera 200 is arranged by adhesion on the upper part of the windshield 80 inside the vehicle. Inner mirror 100 is arranged on the vehicle rear side of camera 200 . Therefore, the inner mirror 100 is pushed out to the rear side of the vehicle compared to the case where the camera 200 is not arranged. Accordingly, the mounting portion 120 of the inner mirror 100 on the header panel 10 is also moved to the rear side of the vehicle. The bulging portion 12 is a portion that bulges toward the rear side of the vehicle from the body portion 11 corresponding to the mounting portion 120 of the inner mirror 100 that has moved.

The bulging portion 12 is arranged with respect to the main body portion 11 so as to gradually extend toward the rear side of the vehicle from the left and right end portions of the header panel 10 toward the central portion in the vehicle width direction. In this example, the bulging portions 12 are arranged symmetrically with respect to the central portion in the vehicle width direction. The mounting portion 120 of the inner mirror 100 is provided substantially at the center of the bulging portion 12 in the vehicle width direction. The amount of swelling of the swelling portion 12 from the main body portion 11 can be appropriately selected according to the amount by which the inner mirror 100 is shifted toward the rear side of the vehicle.

[Horizontal reinforcement]
The lateral reinforcement 20 is a reinforcing member attached to the vehicle upper side surface of the header panel 10 so as to straddle the bulging portion 12 . The lateral reinforcement 20 includes a region that straddles the bulging portion 12 (hereinafter referred to as a central region) and regions other than the central region (hereinafter referred to as end regions). The central region is formed in an L-shaped cross section having a side located on the vehicle upper side and a side located on the vehicle rear side (see FIG. 2). The end region is formed to have a U-shaped cross-section having a side located on the vehicle upper side, a side located on the vehicle rear side, and a side located on the vehicle lower side. The side of the lateral reinforcement 20 located on the vehicle lower side in the end region is welded to the vehicle upper side surface of the main body portion 11 of the header panel 10 . Around the bulging portion 12, particularly in the central portion of the bulging portion 12 in the vehicle width direction, a harness (not shown) for an interior lamp provided near the inner mirror 100, a harness for a camera, and the like are routed. In order to facilitate wiring of these harnesses and to facilitate joining (welding) of the second joint portion 52, which will be described later, the side located on the lower side of the vehicle is cut in the central region that straddles the bulging portion 12. It is cut and formed to have an L-shaped cross section.

[Vertical reinforcement]
The vertical reinforcement 30 is attached to the vehicle upper side surface of the header panel 10 so as to extend between the first joint portion 51 where the header panel 10 is cantilever supported by the roof panel 60 and the rear end portion 12 b of the bulging portion 12 . It is a reinforcing member to be used. The longitudinal reinforcement 30 is arranged at a position shifted to one side (right side in this example) in the vehicle width direction from the central portion in the vehicle width direction. This is because, as described above, a harness for additional parts such as the camera 200 is routed in the central portion of the bulging portion 12 in the vehicle width direction. It is preferable that the vertical reinforcement 30 be installed as close as possible to the center in the width direction of the vehicle so as not to interfere with the work of wiring harnesses for additional parts such as the camera 200 . In this example, the vertical reinforcement 30 is provided so as to cover the lateral reinforcement 20 from above the vehicle (see FIG. 2).

The front end portion 30a of the longitudinal reinforcement 30 is welded together with the front end portion 11a of the header panel 10 and the front end portion 60a of the roof panel 60 at the first joint portion 51 . In this example, the front end portion 30a of the vertical reinforcement 30 is sandwiched between the front end portion 11a of the header panel 10 and the front end portion 60a of the roof panel 60, and the first joint portion 51 is formed by welding them together. ing. A rear end portion 30b of the vertical reinforcement 30 is joined to the rear end portion 12b of the bulging portion 12 by welding. That is, the joint portion (the third joint portion 53, FIG. 2) between the rear end portion 30b of the vertical reinforcement 30 and the rear end portion 12b of the bulging portion 12 is formed by welding. Welding methods include, for example, temper plug welding (SPW) and spot welding. In this example, the third joint 53 is formed by joining by SPW.

[Second joint]
The second joint portion 52 is a portion where the lateral reinforcement 20 and the longitudinal reinforcement 30 are joined to each other at the intersection of the lateral reinforcement 20 and the longitudinal reinforcement 30 . In this example, the side of the vehicle upper side of the central region of the lateral reinforcement 20 and the portion of the longitudinal reinforcement 30 covering the side of the vehicle from the vehicle upper side are joined. That is, the second joint portion 52 is configured such that the lateral reinforcement 20 is positioned on the vehicle lower side and the vertical reinforcement 30 is positioned on the vehicle upper side. When the lateral reinforcement 20 has a side on the vehicle lower side in the central region, the second joint portion 52 is such that the lateral reinforcement 20 is positioned on the vehicle upper side and the vertical reinforcement 30 is positioned on the vehicle lower side. It may be configured in a position. The second joint portion 52 is configured by joining by welding. Welding methods include, for example, temper plug welding (SPW) and spot welding. In this example, the second joint portion 52 is configured by joining by SPW. The number of second joints 52 can be selected as appropriate.

The mounting portion 120 of the inner mirror 100 in the bulging portion 12 of the header panel 10 described above is provided in the vicinity of the vehicle lower side of the second joint portion 52 as shown in FIG. In this example, the mounting portion 120 of the inner mirror 100 is slightly shifted leftward in the vehicle width direction from the second joint portion 52 (see FIG. 1), and is slightly shifted toward the vehicle rear side from the second joint portion 52. (see FIG. 2). It is preferable that the mounting portion 120 of the inner mirror 100 is provided as close as possible to the second joint portion 52 directly under the vehicle, to the extent that it does not interfere with the wiring work of the harness for additional parts such as the camera 200 .

[Sub Reinforcement]
In this example, the longitudinal reinforcement 30 is arranged at a position shifted to one side (right side in this example) in the vehicle width direction from the central portion in the vehicle width direction. Therefore, the sub-reinforcement 40 may be arranged at a position shifted from the central portion in the vehicle width direction to the other side in the vehicle width direction (the left side in this example). The sub-reinforcement 40 is a reinforcing member attached to the vehicle upper side surface of the header panel 10 so as to extend over the lateral reinforcement 20 and the rear end portion 12 b of the bulging portion 12 . When attaching the sub-reinforcement 40, in this example, the front end of the sub-reinforcement 40 is welded to the side of the vehicle upper side in the central region of the lateral reinforcement 20, and the rear end of the sub-reinforcement 40 is , is joined to the rear end portion 12b of the bulging portion 12 by welding. Welding methods include, for example, temper plug welding (SPW) and spot welding. In this example, each joint is configured by SPW.

[Effect]
In the vehicle body structure 1 of the embodiment, the lateral reinforcement 20 partitions the bulging portion 12 in the longitudinal direction of the vehicle, and the vertical reinforcement 30 provides high rigidity to the first joint portion 51 and the rear end portion of the bulging portion 12. 12b, the rigidity of the bulging portion 12 can be increased. In addition, the vehicle body structure 1 is provided with the second joint portion 52 that is joined to the intersection of the lateral reinforcement 20 and the longitudinal reinforcement 30, so that the rigidity of the bulging portion 12 can be further increased. . As described above, in the vehicle body structure 1, the header panel 10 is cantilevered on the front end portion 60a of the roof panel 60, and the attachment portion 120 of the inner mirror 100 of the header panel 10 is bulged toward the rear side of the vehicle. Also, the rigidity of the header panel 10 including the bulging portion 12 can be effectively improved.

In the vehicle body structure 1 of the embodiment, the vertical reinforcement 30 is arranged at a position shifted from the central portion in the vehicle width direction to one side in the vehicle width direction. Easy to work. At this time, by arranging the sub-reinforcement 40 at a position shifted to the other side in the vehicle width direction from the central portion in the vehicle width direction, the rigidity of the bulging portion 12 can be improved in a well-balanced manner.

In the vehicle body structure 1 of the embodiment, the rigidity of the bulging portion 12 can be improved as described above, and the mounting portion 120 for the inner mirror 100 is provided in the vicinity of the second joint portion 52 having high rigidity on the lower side of the vehicle. Vibration of the inner mirror 100 can thus be effectively suppressed.

The vehicle body structure 1 of the embodiment has improved rigidity by arranging the horizontal reinforcement 20 and the vertical reinforcement 30 on the header panel 10 . A space can be formed in the A ceiling member 90 can be arranged in this space. Therefore, the vehicle body structure 1 of the embodiment can be suitably used for a configuration in which the ceiling member 90 is arranged in the upper part of the passenger compartment without using a clip or the like.

The present invention is not limited to these examples, but is indicated by the scope of the claims, and is intended to include all modifications within the meaning and scope of equivalents to the scope of the claims.

Reference Signs List 1 vehicle body structure 10 header panel 11 main body 11a front end 12 bulging portion 12b rear end 120 mounting portion 20 horizontal reinforcement 30 vertical reinforcement 30a front end 30b rear end 40 sub-reinforcement 51 First Joint Part 52 Second Joint Part 53 Third Joint Part 60 Roof Panel 60a Front End Part 70 Front Pillar Inner Panel 80 Windshield 90 Ceiling Member 100 Inner Mirror 200 Camera

Claims (1)

A vehicle body structure comprising a header panel cantilevered at the front end of the roof panel so as to have a space between the header panel and the roof panel,
The header panel includes a bulging portion that bulges rearward of the vehicle at a central portion in the vehicle width direction,
a lateral reinforcement attached to the vehicle upper side surface of the header panel so as to straddle the bulging portion in the vehicle width direction;
a vertical reinforcement attached to the surface of the header panel on the vehicle upper side so as to span a first joint portion where the header panel is cantilever supported by the roof panel and an end portion of the bulging portion on the vehicle rear side; ,
a second joint portion joined to each other at the intersection of the horizontal reinforcement and the vertical reinforcement;
The bulging portion includes an inner mirror mounting portion in the vicinity of the vehicle lower side of the second joint portion,
car body structure.

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