WO2015049928A1

WO2015049928A1 - Structure for upper part of vehicle body

Info

Publication number: WO2015049928A1
Application number: PCT/JP2014/071732
Authority: WO
Inventors: 源作村上; 梅原　康平
Original assignee: 本田技研工業株式会社
Priority date: 2013-10-04
Filing date: 2014-08-20
Publication date: 2015-04-09
Also published as: JPWO2015049928A1; CN105764778A; CN105764778B; JP6043878B2

Abstract

A structure for the upper part of a vehicle body is provided with a guide rail, a roof side rail-constituting panel, and a reinforcement wall member. The roof side rail-constituting panel is provided with a rail bottom wall and a rail vertical wall. The region of the roof side rail-constituting panel, in which the tilted section of the guide rail is disposed, is provided with a protrusion section where the rail bottom wall and the rail vertical wall protrude inward in the width direction of the vehicle. One end of the reinforcement wall member is joined to the rail bottom wall, and the other end of the reinforcement member is joined to the rail vertical wall of the protrusion section.

Description

Body superstructure

The present invention relates to an upper body structure of a vehicle that employs a sliding door on a side of the vehicle body.
This application claims priority based on Japanese Patent Application No. 2013-209417 for which it applied on October 4, 2013, and uses the content here.

As a vehicle that adopts a sliding door on the side of the vehicle body, a guide rail for slide guidance is arranged on the roof side rail configuration panel (panel that constitutes the inner side of the roof side rail) arranged on the upper side of the vehicle body Is known (see, for example, Patent Document 1).

In this type of vehicle, the guide rail is arranged on the roof side rail constituting panel together with the rail support frame. For this purpose, the roof side rail component panel has a substantially L-shaped rail provided with a rail bottom wall extending substantially horizontally and a rail vertical wall rising upward from the inner end of the rail bottom wall in the vehicle width direction. It has a cross-sectional shape. In addition, the slide track of the slide door is usually a track that is drawn into the vehicle interior side at the end of the door closing. Therefore, an inclined portion that is inclined obliquely inward in the vehicle width direction is provided at the front edge portion of the guide rail that guides the slide door. For this reason, the area corresponding to the inclined portion of the guide rail on the roof side rail constituting panel is provided with a bulging portion in which a part of the rail bottom wall and the rail vertical wall bulges inward in the vehicle width direction.

Japanese Patent Laid-Open No. 2005-319940

However, in the above-described conventional vehicle body upper structure, the roof side rail component panel is provided with a bulging portion that bulges inward in the vehicle width direction, and the roof side rail component panel has a ridge line portion extending in the vehicle longitudinal direction. It breaks off by the bulging part. In addition, the width in the vehicle width direction of the rail bottom wall of the bulging portion of the roof side rail component panel partially expands, resulting in a large change in strength. From these things, the further improvement of the rigidity of the vicinity part of the bulging part of a roof side rail structure panel is desired.

Also, the vicinity of the bulging part of the roof side rail component panel is the part that supports the front edge of the slide rail. Therefore, further improvement in rigidity is desired in order to increase the rigidity when the sliding door is opened and closed.

This aspect of the present invention provides a vehicle body upper structure capable of efficiently increasing the rigidity of the vicinity of the bulging portion provided on the roof side rail constituting panel.

The vehicle body superstructure according to the present invention employs the following configuration.
(1) A vehicle body upper structure according to an aspect of the present invention is configured to guide a slide door on a side of a vehicle body so as to be slidable, and has a guide rail having an inclined portion inclined obliquely inward in the vehicle width direction at one edge, A roof side rail constituting panel that is disposed along the vehicle longitudinal direction on the upper side of the vehicle body, and the guide rail is disposed on the upper portion; and a reinforcing wall member, and the roof side rail constituting panel includes a horizontal A rail bottom wall extending in the direction and a rail vertical wall rising upward from an inner end of the rail bottom wall in the vehicle width direction, and an inclined portion of the guide rail in the roof side rail constituting panel Is provided with a bulging portion in which the rail bottom wall and the rail vertical wall bulge inward in the vehicle width direction, and one end of the reinforcing wall member is joined to the rail bottom wall. Is The other end of the reinforcing wall member is joined to the rail longitudinal wall of the bulge portion.

As a result, the reinforcing wall member is stretched between the rail bottom wall of the roof side rail component panel and the rail vertical wall of the bulge portion, and deformation of the vicinity of the bulge portion of the roof side rail component panel is suppressed. .

(2) In the aspect of the above (1), the rail vertical wall of the bulging portion is provided with a laterally extending region that extends outward from the front side of the top of the bulging portion in the vehicle width direction. The other end of the reinforcing wall member may be joined to the lateral extension region.

In this case, since the reinforcing wall member is connected to the rail bottom wall and the rail vertical wall in the laterally extending region of the bulging portion, the reinforcing wall member is disposed at a position where interference with the guide rail can be easily avoided. Is possible. For this reason, it is not necessary to significantly change the design and arrangement of the guide rail in order to avoid interference with the reinforcing wall member, and the bulging portion can be reinforced without affecting the slide door.

(3) In the above (1) or (2), the reinforcing wall further includes a roof cross beam member extending in the vehicle width direction and having one end coupled to the bulging portion of the roof side rail constituting panel. The other end of the member may be joined to the rail vertical wall of the bulging portion at a position overlapping the roof cross beam member in the vehicle width direction in a top view.

Thus, the rail bottom wall of the roof side rail constituting panel and the roof cross beam member are connected via the portion of the rail vertical wall of the bulging portion whose rigidity is enhanced by the reinforcing wall member. Therefore, load transmission in the vehicle width direction is performed between the roof side rail constituting panel and the roof cross beam member through a highly rigid portion of the rail vertical wall of the bulging portion.

(4) In the aspect according to any one of (1) to (3), the roof further includes a pillar component panel extending in the vertical direction of the vehicle body and having an upper end coupled to the roof side rail component panel. The side rail constituting panel constitutes an opening upper edge portion of the door opening of the vehicle body side portion, the pillar constituting panel constitutes an opening vertical edge portion of the door opening, and one end of the reinforcing wall member is formed on the rail The bottom wall may be joined to a position in the vicinity of the upper corner portion of the door opening sandwiched between the upper edge portion of the opening and the vertical edge portion of the opening.

Thus, the upper corner portion of the door opening is reinforced by being connected to the rail vertical wall of the bulging portion via the reinforcing wall member. For this reason, the rigidity of the upper corner portion of the door opening increases, and the load transmission efficiency between the pillar component panel and the roof side member also increases.

(5) In the aspect of (1) or (2) above, a roof cross beam member extending in the vehicle width direction and having one end portion coupled to the bulging portion of the roof side rail component panel, A pillar component panel that extends and has an upper end coupled to the roof side rail component panel, and the roof side rail component panel constitutes the upper edge of the opening of the door opening on the vehicle body side, The pillar constituting panel constitutes an opening vertical edge portion of the door opening, and the other end of the reinforcing wall member is disposed on the vehicle front side with respect to one end of the reinforcing wall member, and the reinforcing wall member One end of the rail is joined to a position in the vicinity of the upper corner portion of the door opening sandwiched between the opening upper edge portion and the opening vertical edge portion of the rail bottom wall, and the other end of the reinforcing wall member is The roof cross beam member in top view It may be bonded to the rail longitudinal wall of the bulge portion in a position that overlaps in the vehicle width direction.

In this case, one end of the reinforcing wall member is joined to a position in the vicinity of the upper corner portion of the door opening in the rail bottom wall, and the other end of the reinforcing wall member is an upper surface on the front side of the upper corner portion of the door opening. It is joined to the rail vertical wall of the bulging portion at a position overlapping the roof beam member in the vehicle width direction. As a result, the space between the upper corner portion of the door opening and the roof cross beam member is reinforced through the reinforcing wall member and the rail vertical wall of the bulging portion. For this reason, the rigidity of the upper corner portion of the door opening increases, and the load transmission efficiency between the pillar constituting panel and the roof cross beam member also increases.

(6) In the aspect according to any one of (1) to (5), the reinforcing wall member has a direction intersecting with an extending direction from one end of the reinforcing wall member toward the other end of the reinforcing wall member. The width may be gradually increased.

In this case, the shape of the reinforcing wall member is widened from one end on the rail bottom wall side toward the other end on the rail vertical wall side of the bulging portion. For this reason, the load input to one end of the reinforcing wall member is distributed and transmitted over a wide range of the rail vertical wall of the bulging portion. Therefore, the load transmission efficiency from one end of the reinforcing member to the other end is increased.

(7) In the aspect according to any one of (1) to (6), the reinforcing wall member extends along the rail bottom wall from a position closer to the outer side of the rail bottom wall in the vehicle width direction. A bottom wall portion, a vertical wall portion extending upward from the inner end portion of the bottom wall portion in the vehicle width direction along the rail vertical wall, and rising upward from a side end portion of the bottom wall portion A side wall portion, and the side wall portion may be connected such that an end portion of the bottom wall portion on the outer side in the vehicle width direction and an upper end portion of the vertical wall portion form a straight line in a top view. .

This allows the reinforcing member to transmit the load in a straight line between the rail bottom wall and the rail vertical wall of the bulging portion, and the load transmission efficiency is increased.

(8) In the aspect of the above (7), a flange portion that bends at right angles to the extending direction of the side wall portion may be provided at the upper end portion of the side wall portion.

In this case, a ridge line portion along the extending direction of the side wall portion is formed at a position where the upper end portion of the side wall portion is connected to the flange portion. Therefore, a load can be more efficiently transmitted through the ridge line portion between the rail bottom wall and the rail vertical wall of the bulging portion.

(9) In the aspect according to any one of (1) to (8), the reinforcing wall member includes a first joint portion that is joined to an outer side position in the vehicle width direction of the rail bottom wall; The roof side rail component panel includes a second joint joined to the rail vertical wall and a third joint joined to the rail bottom wall between the first joint and the second joint. It may be joined.

As a result, the load input to the rail vertical wall is transmitted to the reinforcing wall member through the second joint, and the load is distributed and transmitted to the rail bottom wall through the first joint and the third joint. .

According to the aspect of the present invention, the rigidity of the vicinity of the bulging portion of the roof side rail component panel is achieved by the reinforcing wall member having one end joined to the rail bottom wall and the other end joined to the rail vertical wall of the bulging portion. Can be further enhanced. Therefore, the rigidity of the vehicle body on the side of the upper part of the vehicle body can be increased, and the feeling of rigidity when the sliding door is opened and closed can be increased.

It is a perspective view which shows the vehicle body structure of the vehicle of one Embodiment of this invention. 1 is an exploded perspective view of a vehicle according to an embodiment of the present invention. 1 is a perspective view showing a vehicle body skeleton of a vehicle according to an embodiment of the present invention. It is the perspective view which expanded the IV section of FIG. 3 of the vehicle of one Embodiment of this invention. It is a perspective view corresponding to the V arrow of FIG. 4 of the vehicle of one Embodiment of this invention. It is a perspective view corresponding to VI arrow of FIG. 5 of the vehicle of one Embodiment of this invention. It is a perspective view corresponding to the VII arrow of FIG. 6 of the vehicle of one Embodiment of this invention. FIG. 6 is a perspective view in which a rail support frame / lower and a guide rail are added to FIG. 5. FIG. 9 is a perspective view in which a rail support frame / upper is added to FIG. 8. It is a perspective view corresponding to the X arrow of FIG. 9 of the vehicle of one Embodiment of this invention. It is a perspective view of the reinforcement wall member of one Embodiment of this invention. It is a top view of the reinforcement wall member of one Embodiment of this invention. FIG. 13 is a cross-sectional view corresponding to the XIII-XIII cross section of FIG. 12 of the reinforcing wall member of one embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIGS. 1 to 3 are views showing the structure of the left side portion and the roof portion of the vehicle 1 according to this embodiment.
The vehicle 1 of this embodiment is a so-called minivan type vehicle, and a slide door 2 that slides in the front-rear direction of the vehicle body and opens and closes is attached to the side of the vehicle. In the vehicle 1 of this embodiment, a hinged door (not shown) is employed as the front seat side door, and a slide door 2 is employed as the rear seat side door. In the vehicle body of the vehicle 1, a body side panel 4 is attached to a side surface of a vehicle body skeleton 3 formed by welding a plurality of steel plates, and a roof panel 5 is attached to an upper surface of a roof portion of the vehicle body skeleton 3.

As shown in FIG. 3, the side structure of the vehicle body skeleton 3 includes a front pillar inner 6, a center pillar inner 7 (pillar component panel), a rear quarter pillar inner 10, a rear pillar inner 11, and a rear pillar. A roof side rail inner 9 (roof side rail constituting panel) and a front roof side rail inner 8 are provided. The front pillar inner 6 extends obliquely forward from the front end side of the roof portion. The center pillar inner 7 extends downward from a central region near the front portion of the roof portion. The rear quarter pillar inner 10 and the rear pillar inner 11 extend downward from the rear portion of the roof portion. The rear roof side rail inner 9 extends along the longitudinal direction of the vehicle body and connects the upper end of the center pillar inner 7 and the upper end of the rear quarter pillar inner 10. The front roof side rail inner 8 connects the front end of the rear roof side rail inner 9 and the front end of the front pillar inner 6. The body side panel 4 is joined to the outer side in the vehicle width direction of the panel material constituting the vehicle body skeleton 3 with a stiffener appropriately interposed therebetween.

The area surrounded by the front pillar inner 6, the front roof side rail inner 8, and the center pillar inner 7 is a door opening 16F in which a front door (not shown) is arranged. An area surrounded by the center pillar inner 7, the rear roof side rail inner 9, and the rear quarter pillar inner 10 is a door opening 16R in which the rear sliding door 2 (see FIG. 1) is disposed. Yes.

Further, the roof constituting portion of the vehicle body skeleton 3 includes a front roof rail 12, a rear roof rail 13, and a roof arch 14 (roof cross beam member). The front roof rail 12 extends in the vehicle width direction, and both ends thereof are coupled to the rear edge portions of the left and right front pillar inners 6. The rear roof rail 13 extends in the vehicle width direction, and both ends thereof are coupled to the rear edge portions of the left and right rear pillar inners 11. The roof arch 14 extends in the vehicle width direction, and both ends thereof are coupled to the front edge portions of the left and right rear roof side rail inners 9. In addition, the member shown with the code | symbol 15 in the figure is an auxiliary | assistant cross member which connects the right and left roof side parts of the vehicle body frame | skeleton 3 mutually.

As shown in FIG. 2, a guide rail 17 for slidably guiding the upper portion of the sliding door 2 is attached to the upper surface side of the rear roof side rail inner 9 disposed above the rear door opening 16R. It has been. The guide rail 17 is supported and fixed in a state of being covered up and down by a rail support frame / lower 18L and a rail support frame / upper 18U, and via these rail support frame / lower 18L and rail support frame / upper 18U. It is attached to the upper surface side of the rear roof side rail inner 9.

FIG. 4 is an enlarged perspective view of the IV part of FIG. 5 to 7 are perspective views of the part corresponding to FIG. 4 as seen from different angles. FIG. 8 is a perspective view showing a state in which the guide rail 17 is attached to the rear roof side rail inner 9 via the rail support frame lower 18L. FIGS. 9 and 10 are perspective views showing a state in which the rail support frame / lower 18L and the rail support frame / upper 18U are attached to the rear roof side rail inner 9 together with the guide rail 17. FIG.

Here, the guide rail 17 shown in FIGS. 8 and 9 will be described first. The entire guide rail 17 extends substantially along the longitudinal direction of the vehicle body, and an inclined portion 17a that is inclined obliquely inward in the vehicle width direction is provided at the front edge. The inclined portion 17a is provided in order to obtain an operation of being pulled into the vehicle interior side (the vehicle width direction inner side) immediately before the slide door 2 moves to the vehicle body front side and is completely closed. The guide rail 17 has a front end portion and a rear end portion attached to the upper surface of the rail support frame / lower 18L via a bracket 19 (only the bracket 19 on the front end side is shown in FIGS. 8 and 9). The front upper end side of the slide door 2 is slidably supported in an intermediate region between the rear end portion and the rear end portion.

As shown in FIGS. 4 to 7, the rear roof side rail / inner 9 includes a rail bottom wall 9a extending in a substantially horizontal direction and a rail rising upward from the inner end of the rail bottom wall 9a in the vehicle width direction. And a vertical wall 9b. A joint portion 20 is provided at the front end portion of the rear roof side rail inner 9. The joint portion 20 includes a front extending piece 20a and a downward extending piece 20b. The front extension piece 20 a is welded and fixed to the rear end portion of the front roof side rail inner 8, and the lower extension piece 20 b is welded and fixed to the upper end portion of the center pillar inner 7.

The rail bottom wall 9a of the rear roof side rail inner 9 is a portion where the guide rail 17 is disposed on the upper surface side via the rail support frame / lower 18L, and therefore, the guide rail 17 of the rail bottom wall 9a. The region on the front edge side where the inclined portion 17a is arranged bulges outward in the vehicle width direction corresponding to the shape of the inclined portion 17a. This bulging shape is a substantially triangular shape with a rounded top. Further, the front edge portion region of the rail vertical wall 9b bulges in a substantially triangular shape outward in the vehicle width direction along the bulge shape of the rail bottom wall 9a. Hereinafter, a region bulging inward in the vehicle width direction with respect to the general portions of the rail bottom wall 9a and the rail vertical wall 9b is referred to as a bulging portion 21. Further, a region of the rail vertical wall 9b of the bulging portion 21 that extends obliquely outward in the vehicle width direction from the top front side of the bulging portion 21 is referred to as a laterally extending region 9bA.

In addition, an upper edge flange 22 that is bent inward in the vehicle width direction is integrally provided on the rail vertical wall 9b of the rear roof side rail inner 9 and the upper end portion of the joint portion 20, and the rail of the rear roof side rail inner 9 is integrated. A lower edge flange 23 that is bent downward is integrally provided at the outer end of the bottom wall 9a in the vehicle width direction.

Further, the center pillar inner 7 which is fixed by welding to the joint portion 20 of the rear roof side rail inner 9 constitutes a rear side door opening 16R together with the rear roof side rail inner 9. The rear roof side rail inner 9 constitutes the upper edge portion of the door opening 16R, and the center pillar inner 7 constitutes the opening vertical edge portion of the door opening 16R.

Here, the upper surface of the rail bottom wall 9a of the rear roof side rail inner 9 and the outer surface of the rail vertical wall 9b of the bulging portion 21 are coupled to one end and the other end of the bulkhead 24 that is a reinforcing wall member. Has been. More specifically, one end of the bulkhead 24 is in the vicinity of the upper corner portion C sandwiched between the opening upper edge portion and the opening vertical edge portion of the door opening 16R on the rear side of the upper surface of the rail bottom wall 9a. The other end of the bulkhead 24 is coupled to the outer surface in the vehicle width direction of the laterally extending region 9bA of the rail vertical wall 9b of the bulging portion 21. In this embodiment, the bulkhead 24 is coupled to the rear roof side rail inner 9 so as to be inclined such that the other end is on the front side of the vehicle body and the inner side in the vehicle body width direction with respect to the one end as viewed from above.

Incidentally, as shown in FIG. 6, the roof arch 14 which is a roof cross beam member is disposed at the front and rear positions overlapping the center pillar inner 7 in a top view, and both ends of the roof arch 14 bulge the rear roof side rail inner 9. The upper end portion (upper edge flange 22) of the side extension region 9bA in the portion 21 is coupled by bolt fastening or the like. As shown in FIG. 6, the other end of the bulkhead 24 is coupled to the rail vertical wall 9b of the bulging portion 21 (side extension region 9bA) at a position overlapping the roof arch 14 in the vehicle width direction when viewed from above. Yes.

11 to 13 are views showing the detailed shape of the bulkhead 24. FIG.
The bulkhead 24 is formed by press-molding a metal plate material. The bulkhead 24 is formed such that the width in the direction orthogonal to the extending direction gradually expands toward the end in the extending direction from one end coupled to the rail bottom wall 9a to the other end coupled to the rail vertical wall 9b. Has been. The bulkhead 24 includes a bottom wall portion 24a superposed on the top surface of the rail bottom wall 9a, a vertical wall portion 24b superposed on the side surface of the rail vertical wall 9b on the outer side in the vehicle width direction, and a vertical wall from the bottom wall portion 24a. And a pair of side wall portions 24c rising from both sides of the region extending over the wall portion 24b. The bottom wall portion 24a is formed along the upper surface of the rail bottom wall 9a, the vertical wall portion 24b is curved from the bottom wall portion 24a and rises, and the upper edge portion is formed along the side surface of the rail vertical wall 9b. ing. The side wall portions 24c on both sides connect the end portion of the bottom wall portion 24a and the upper end portion of the vertical wall portion 24b so as to form a straight line when viewed from above.

Further, a flange portion 24d that is bent substantially at right angles to the extending direction of the side wall portion 24c is integrally formed at the upper end portion of the side wall portion 24c on the outer side in the vehicle width direction. As shown in FIGS. 11 and 12, the flange portion 24 d forms a ridge line portion a along the extending direction of the side wall portion 24 c at the connecting corner portion with the side wall portion 24 c.

Further, the bulkhead 24 is spot-welded to the rail bottom wall 9a and the rail vertical wall 9b at two locations on the bottom wall portion 24a and one location on the vertical wall portion 24b, respectively. Specifically, as shown in FIG. 12, the bulkhead 24 is welded to a position near the upper end of the rail vertical wall 9b and a first joint W1 welded to a position near the outer side in the vehicle width direction of the rail bottom wall 9a. Are joined to the rear roof side rail inner 9 by the second joint W2 and the third joint W3 welded to the rail bottom wall 9a between the first joint W1 and the second joint W2. ing.

As shown in FIGS. 8 to 10, the rail support frame lower 18L and the rail support frame upper 18U attached to the upper surface of the rear roof side rail inner 9 Corresponding to the shape of the portion 21, the same bulging

portions

21L and 21U are formed at the same position. However, the front end lengths of the rail support frame / lower 18L and the rail support frame / upper 18U are set to lengths that do not completely overlap the side extension region 9bA of the bulging portion 21 of the rear roof side rail / inner 9. . As shown in FIG. 10, the bulkhead 24 joined to the rail vertical wall 9b and the rail bottom wall 9a of the laterally extending region 9bA of the bulging portion 21 is connected to the rail support frame / lower 18L or the rail support frame / upper 18U. It is set so as not to interfere with.

As described above, the vehicle body upper structure of the vehicle 1 of this embodiment has one end joined to the rail bottom wall 9a and the other end to the rail vertical wall 9b of the bulging portion 21 in the upper part of the rear roof side rail inner 9. A bulkhead 24 to be joined is provided. Therefore, the bulkhead 24 functions so as to stretch between the rail bottom wall 9a and the rail vertical wall 9b of the bulging portion 21 and suppress deformation of the vicinity of the bulging portion 21 of the rear roof side rail inner 9. To do.

Therefore, in the vicinity of the bulging portion 21 of the rear roof side rail inner 9, the ridge line portion extending along the longitudinal direction of the vehicle body is interrupted by the bulging portion 21, and the bulging portion 21 has a width in the vehicle width direction. However, in this superstructure of the vehicle body, the newly added bulkhead 24 can efficiently increase the rigidity of the vicinity of the bulging portion 21. Therefore, by adopting this vehicle body upper structure, it is possible to increase the vehicle body rigidity on the side of the vehicle body upper side and to increase the sense of rigidity when the slide door 2 is opened and closed.

Further, in the case of the vehicle body upper structure of the vehicle 1 according to this embodiment, the rail vertical wall 9b of the bulging portion 21 is provided with a laterally extending region 9bA extending outward from the bulging top portion in the vehicle width direction. The other end of 24 is joined to the rail vertical wall 9b of this laterally extending region 9bA. Therefore, the bulkhead 24 can be easily disposed at a position where it does not interfere with the front end portions of the rail support frame / lower 18L and the rail support frame / upper 18U. Therefore, even if the bulk head 24 is added to the existing vehicle body superstructure as in this embodiment, the shape and arrangement of the guide rail 17 and the support frame are significantly changed in order to avoid interference with the bulk head 24. There is no need.

Further, the vehicle body upper structure of this embodiment is such that the other end of the bulkhead 24 is joined to the rail vertical wall 9b of the bulging portion 21 at a position overlapping the roof arch 14 in the vehicle width direction when viewed from above. The bottom wall 9a and the roof arch 14 are connected via a portion of the rail vertical wall 9b of the bulging portion 21 whose rigidity is increased by the bulkhead 24. Therefore, a load can be efficiently transmitted between the rail bottom wall 9 a of the rear roof side rail inner 9 and the roof arch 14. Therefore, the rigidity of the intersection of the rear roof side rail inner 9 and the roof arch 14 can be increased.

Furthermore, in the vehicle body upper structure of this embodiment, one end of the bulkhead 24 is joined to a position in the vicinity of the upper corner portion C of the door opening 16R in the rail bottom wall 9a. Therefore, it is possible to increase the rigidity of the upper corner portion C of the door opening 16R where various loads are easily applied.

In particular, in the vehicle body upper structure of this embodiment, one end of the bulkhead 24 is joined to a position near the upper corner portion C of the door opening 16R in the rail bottom wall 9a, while the other end of the bulkhead 24 is joined. However, on the front side of the upper corner portion C of the door opening 16R, it is joined to the rail vertical wall 9b of the bulging portion 21 at a position overlapping the roof arch 14 in the vehicle width direction when viewed from above. Therefore, it is possible to efficiently reinforce between the upper corner portion C of the door opening 16R and the roof arch 14 via the bulkhead 24 and the rail vertical wall 9b of the bulging portion 21, and the center pillar inner 7 and the roof arch. The load transmission efficiency between the two can be increased.

Further, the bulkhead 24 employed in the vehicle body upper structure of this embodiment has a shape in which the width gradually expands from one end on the rail bottom wall 9a side toward the other end on the rail vertical wall 9b side. Therefore, the load input to one end of the bulkhead 24 can be distributed and transmitted over a wide range of the rail vertical wall 9b. Therefore, by employing this bulk head 24, the load transmission efficiency from one end side to the other end side of the bulk head 24 is increased.

Further, the bulkhead 24 employed in the vehicle body upper structure of this embodiment includes a bottom wall portion 24a joined to the rail bottom wall 9a, a vertical wall portion 24b joined to the rail vertical wall 9b, and a bottom wall portion 24a. A side wall portion 24c rising from both sides of the region extending over the vertical wall portion 24b, and the side wall portion 24c has an upper end portion on the outer side in the vehicle width direction of the bottom wall portion 24a and an upper end portion of the vertical wall portion 24b. It is made into the shape connected so that a straight line may be formed visually. Therefore, a load can be efficiently and linearly transmitted between the rail bottom wall 9a and the rail vertical wall 9b of the bulging portion 21.

Further, in the bulkhead 24 of this embodiment, a flange portion 24d that bends substantially at right angles to the extending direction of the side wall portion 24c is provided at the upper end portion of one side wall portion 24c. Therefore, the load transmission efficiency between the bottom wall portion 24a and the vertical wall portion 24b can be further increased by using the ridge line portion a formed at the connecting corner portion of the side wall portion 24c and the flange portion 24d.

Further, in the bulkhead 24 of this embodiment, the first joint W1 welded to the outer side in the vehicle width direction of the rail bottom wall 9a and the second joint welded to the position near the upper end of the rail vertical wall 9b. It is joined to the rear roof side rail inner 9 by the portion W2 and the third joint W3 welded to the rail bottom wall 9a between the first joint W1 and the second joint W2. Therefore, the load input to the bulkhead 24 from the rail vertical wall 9b through the second joint W2 can be distributed and transmitted to the rail bottom wall 9a side through the first joint W1 and the third joint. Therefore, the load transmission efficiency from the rail vertical wall 9b to the rail bottom wall 9a side can be enhanced.

The present invention is not limited to the above-described embodiment, and various design changes can be made without departing from the scope of the invention.

2 ... Slide door 7 ... Center pillar inner (pillar component panel)
9 ... Rear roof side rail / inner (Roof side rail construction panel)
9a ... Rail bottom wall 9b ... Rail vertical wall 9bA ... Side extension region 14 ... Roof arch (roof cross beam member)
16R ... door opening 17 ... guide rail 17a ... inclined portion 21 ... bulging portion 24 ... bulk head (reinforcing wall member)
24a ... Bottom wall 24b ... Vertical wall 24c ... Side wall 24d ... Flange W1 ... First joint W2 ... Second joint W3 ... Third joint

Claims

A guide rail that slidably guides the sliding door on the side of the vehicle body, and has an inclined portion that is inclined obliquely inward in the vehicle width direction at one end edge;
A roof side rail constituting panel that is arranged along the vehicle longitudinal direction on the upper side of the vehicle body, and the guide rail is arranged on the upper part;
A reinforcing wall member,
The roof side rail component panel is provided with a rail bottom wall extending in a horizontal direction, and a rail vertical wall rising upward from an inner end of the rail bottom wall in the vehicle width direction,
In the region where the inclined portion of the guide rail is disposed in the roof side rail constituting panel, a bulging portion is provided in which the rail bottom wall and the rail vertical wall bulge inward in the vehicle width direction,
One end of the reinforcing wall member is joined to the rail bottom wall, and the other end of the reinforcing wall member is joined to the rail vertical wall of the bulging portion.
The rail vertical wall of the bulging portion is provided with a laterally extending region that extends outward from the front side of the top of the bulging portion in the vehicle width direction,
The vehicle body upper structure according to claim 1, wherein the other end of the reinforcing wall member is joined to the laterally extending region.
A roof cross beam member extending in the vehicle width direction and having one end coupled to the bulging portion of the roof side rail component panel;
The other end of the reinforcing wall member is joined to the rail vertical wall of the bulging portion at a position overlapping the roof cross beam member in the vehicle width direction in a top view. Car body superstructure as described.
A pillar construction panel extending in the vehicle body vertical direction and having an upper end coupled to the roof side rail construction panel;
The roof side rail constituting panel constitutes an opening upper edge portion of the door opening of the vehicle body side portion,
The pillar constituting panel constitutes an opening vertical edge portion of the door opening,
One end of the reinforcing wall member is joined to a position in the vicinity of an upper corner portion of the door opening sandwiched between the opening upper edge portion and the opening vertical edge portion of the rail bottom wall. The vehicle body superstructure according to claim 1.
A roof cross beam member extending in the vehicle width direction and having one end coupled to the bulging portion of the roof side rail constituting panel;
A pillar configuration panel extending in the vehicle body vertical direction and having an upper end coupled to the roof side rail configuration panel;
The roof side rail constituting panel constitutes an opening upper edge portion of the door opening of the vehicle body side portion,
The pillar constituting panel constitutes an opening vertical edge portion of the door opening,
The other end of the reinforcing wall member is disposed so as to be located on the vehicle body front side with respect to one end of the reinforcing wall member,
One end of the reinforcing wall member is joined to a position in the vicinity of an upper corner portion of the door opening sandwiched between the opening upper edge portion and the opening vertical edge portion of the rail bottom wall,
The other end of the reinforcing wall member is joined to the rail vertical wall of the bulging portion at a position overlapping the roof cross beam member in the vehicle width direction in a top view. Car body superstructure as described.
The said reinforcement wall member is formed so that the width | variety of the direction which cross | intersects the extending direction which goes to the other end of the said reinforcement wall member from one end of the said reinforcement wall member may expand gradually. Car body superstructure.
The reinforcing wall member is
A bottom wall portion extending along the rail bottom wall from an outer side position in the vehicle width direction of the rail bottom wall;
A vertical wall portion extending upward from the inner end portion of the bottom wall portion in the vehicle width direction along the rail vertical wall;
A side wall portion that rises upward from a side end portion of the bottom wall portion, and
The said side wall part connects the edge part near the outer side of the said vehicle width direction of the said bottom wall part, and the upper end part of the said vertical wall part so that it may form a straight line in top view. Car body superstructure.
The vehicle body upper structure according to claim 7, wherein a flange portion that bends at right angles to an extending direction of the side wall portion is provided at an upper end portion of the side wall portion.
The reinforcing wall member is
A first joint portion joined to an outer side position in the vehicle width direction of the rail bottom wall;
A second joint joined to the rail vertical wall;
2. The roof side rail component panel is joined by a third joint joined to the rail bottom wall between the first joint and the second joint. 3. Car body superstructure as described.