JP2010167978A - Vehicle body structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body structure for preventing a pillar from entering a cabin, and attaining weight reduction. <P>SOLUTION: In the vehicle body structure 10, a roof side rail outer 41 forming a vehicle body outer side part of a left roof side rail 13 opens toward the cabin 50 side, and includes a roughly horizontal upper wall 44. A pillar stiffener 21 is provided on an outer side of the vehicle body of the roof side rail outer 41, a horizontal flap 38 that can be roughly horizontally disposed to the upper wall 44 is provided at a joint bracket 25 of the pillar stiffener 21, the horizontal flap 38 is jointed to the upper wall 44 in an overlapped state, and the jointed horizontal flap 38 and the upper wall 44 are disposed at the roughly center of a closed section part 18. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle body structure in which a roof arch is bridged on a portion of left and right roof side rails facing a pillar stiffener.

2. Description of the Related Art Some vehicle body structures are known that are configured to suppress the deformation of pillars when a load is applied to the side portion (pillar) of the vehicle body from the side.
In this vehicle body structure, a roof cross member is provided between the left and right roof side rails in the vehicle width direction, and the left and right ends of the roof cross member are respectively connected to the left and right roof side rails via braces (connecting members). It is connected. Furthermore, the upper ends of the left and right pillars are connected to the outer portions of the left and right roof side rails, respectively.

  Therefore, when a load acts on the pillar from the side of the vehicle body, the load acting on the pillar can be transmitted to the roof cross member via the brace, and the load can be supported by the roof cross member (see, for example, Patent Document 1). .)

JP 2006-193037 A

However, in this vehicle body structure, the upper ends of the left and right pillars are connected to the outer walls of the left and right roof side rails, respectively.
Therefore, when a load acts on the pillar from the side of the vehicle body, the load acts locally in a direction perpendicular to the outer wall of the roof side rail. When the load acts in a direction perpendicular to the outer wall, the outer wall may be bent and deformed, and the pillar may enter the passenger compartment side.
In order to prevent the pillars from entering the passenger compartment, it is necessary to increase the rigidity of the pillars, which hinders weight reduction.

  An object of the present invention is to provide a vehicle body structure that can prevent a pillar from entering a vehicle interior and can be reduced in weight.

  According to the first aspect of the present invention, the upper end portion of the pillar stiffener is connected to the roof side rail, the roof side rail is provided on each of the left and right sides of the vehicle body, and the left and right roof side rails are opposed to the upper end portion of the pillar stiffener. A vehicle body structure in which a roof arch is bridged over a portion to be mounted, a roof panel is placed on the roof arch, and a closed cross section is formed by the roof arch and the roof panel, and the vehicle body outer portion of the roof side rail is formed. The roof side rail outer is formed to open toward the passenger compartment side and has a substantially horizontal upper wall, and the pillar stiffener is provided outside the vehicle body of the roof side rail outer. The upper end has a flange that can be arranged substantially parallel to the upper wall, and the flange overlaps the upper wall. Are joined in a state, it joined the flange and the top wall is characterized in that it is arranged substantially at the center of the closed-section portion.

  According to a second aspect of the present invention, a reinforcing member is provided at an end portion of the roof arch to suppress vertical deflection of the end portion.

  According to a third aspect of the present invention, a joint portion to be joined to the roof side rail is formed integrally with the roof arch, and the roof arch is directly connected to the roof side rail by joining the joint portion to the roof side rail. It is characterized by that.

Here, when connecting the roof arch to the roof side rail, a connecting member (brace) is usually interposed between the roof arch and the roof side rail.
However, when the connecting member is interposed between the roof arch and the roof side rail, the connecting member is superposed on the roof arch. Therefore, in the roof arch, the overlapped portion and the other portion have different plate thickness dimensions, and stress concentrates on the boundary where the plate thickness dimensions are different.

For this reason, the roof arch is bent at the boundary, and it is difficult to satisfactorily support the load transmitted to the roof arch with the roof arch.
Therefore, in claim 3, the roof arch is directly connected to the roof side rail so that the thickness of the roof arch is kept uniform.

  In the invention which concerns on Claim 1, it has a substantially horizontal upper wall in a roof side rail outer. Moreover, it has the flange which can be arrange | positioned substantially parallel with respect to an upper wall in the upper part of a pillar stiffener. And it joined in the state which accumulated the flange on the upper wall.

Therefore, when a load is applied to the pillar from the side of the vehicle body, the load is applied in parallel to the upper wall. In this way, by applying the load in parallel to the upper wall, the load acts in the buckling direction on the upper wall. Therefore, the deformation of the upper wall can be suppressed compared to the case where a bending load is applied to the upper wall.
Thereby, the load which acted on the pillar can be efficiently transmitted from the flange and the upper wall to the roof arch.

Further, the joined flange and the upper wall were arranged at the approximate center of the closed cross section. Thereby, the transmitted load can be favorably supported by the roof arch.
In this way, the load acting on the pillar is efficiently transmitted to the roof arch, and the transmitted load is favorably supported by the roof arch, so that the pillar can be prevented from entering the vehicle interior.
In addition, since the load acting on the pillar is well supported by the roof arch, it is not necessary to increase the rigidity of the pillar more than necessary. Thereby, weight reduction of a pillar (namely, vehicle body structure) can be achieved.

In the invention which concerns on Claim 2, the reinforcement member was provided in the edge part of the roof arch, and it was made to suppress that the edge part of a roof arch shakes to an up-down direction with this reinforcement member.
In this way, by suppressing the vertical swing of the end portion of the roof arch, the load transmitted to the roof arch can be more favorably supported by the roof arch.

In the invention according to claim 3, the roof arch is directly connected to the roof side rail so that the thickness of the roof arch is kept uniform.
Therefore, since a step (that is, a step caused by a difference in plate thickness) can be removed from the roof arch, it is possible to prevent stress from being concentrated on the roof arch.
Accordingly, the roof arch can be prevented from being bent due to stress concentration, and the load transmitted to the roof arch can be favorably supported by the roof arch.

It is a perspective view which shows the vehicle body provided with the vehicle body structure which concerns on this invention. FIG. 2 is a sectional view taken along line 2-2 of FIG. It is a perspective view which shows the vehicle body structure which concerns on this invention. It is a disassembled perspective view which shows the vehicle body structure of FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. FIG. 6 is a sectional view taken along line 6-6 of FIG. It is a figure explaining the assembly | attachment procedure of the vehicle body structure which concerns on this invention. It is a figure explaining the example which a load acts on the center pillar of the vehicle body structure which concerns on this invention from the vehicle body side.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. Note that “front”, “rear”, “left”, and “right” indicate the direction viewed from the driver, the front side is Fr, the rear side is Rr, the left side is L, and the right side is R.
Here, in order to facilitate understanding of the vehicle body structure, a state in which a roof panel is provided in FIG. 2 is shown.

The vehicle body structure 10 according to the embodiment will be described.
As shown in FIG. 1, the vehicle body structure 10 includes left and right center pillars 12 erected from the approximate center of the side sill toward the roof 11, and left and right roof side rails 13 ( Only the left roof side rail 13 is shown), a roof arch 14 spanned between the left and right roof side rails 13, a left outer panel 15 covering the left roof side rail 13 and the left center pillar 12 from the outside of the vehicle body, and a right roof side A right outer panel 15 that covers the rail 13 and the right center pillar 12 from the outside of the vehicle body, and a roof panel 16 provided (mounted) on the left and right outer panels 15 and the roof arch 14 are provided.

  The left and right center pillars 12, the left and right roof side rails 13, and the left and right outer panels 15 are symmetric members. The left side members will be described below, and the description of the right side members will be omitted.

As shown in FIGS. 2 and 3, the left center pillar 12 includes a pillar stiffener 21 provided on the outer side of the vehicle body and a pillar inner 22 provided on the inner side of the vehicle body.
The pillar stiffener 21 includes a stiffener main body 24 erected from the substantially center of the side sill, and a connection bracket (an upper end portion of the pillar stiffener) 25 provided on an upper end portion 24 a of the stiffener main body 24.

  As shown in FIGS. 4 and 5, the stiffener body 24 includes an outer wall 31, a front side wall 32 that is bent from the front side of the outer wall 31 toward the inside of the vehicle body, and a bending from the rear side of the outer wall 31 toward the inside of the vehicle body. A rear flange 33 bent from the front side wall 32 toward the front of the vehicle body, and a rear flange 35 bent from the rear side wall 33 toward the rear of the vehicle body.

  That is, the stiffener main body 24 is formed of a so-called cross-sectional hat shape by the outer wall 31, the front side wall 32, the rear side wall 33, the front flange 34, and the rear flange 35.

As shown in FIG. 4, the front flange 34 has an upper end (front upper flange) 34 a bent along the upper edge of the front side wall 32 toward the outside of the vehicle body and upward.
The rear flange 35 has an upper end portion (rear upper flange) 35 a bent along the upper edge of the rear side wall 33 toward the outside of the vehicle body and upward.

  The front upper flange 34a and the rear upper flange 35a are provided outside the vehicle body of the lower inclined wall 46 of the left roof side rail 13 and substantially parallel to the lower inclined wall 46 (described in detail later) (FIG. 2). See also).

The connection bracket 25 is provided at the upper end of the outer wall 31, the upper end of the front upper flange 34a, and the upper end of the rear upper flange 35a.
The connection bracket 25 is provided outside the vehicle body of the left roof side rail 13.
The connecting bracket 25 includes a vertical flap 37 raised substantially vertically from the upper end of each of the outer wall 31 and the front and rear upper flanges 34a, 35a, and a horizontal bent from the upper end of the vertical flap 37 toward the inside of the vehicle body. And a flap (flange) 38.

The vertical flap 37 is provided outside the vehicle body of the outer wall 45 (detailed later) of the left roof side rail 13 and substantially parallel to the outer wall 45.
The horizontal flap 38 is provided above the upper wall 44 (described in detail later) of the left roof side rail 13 and substantially parallel to the upper wall 44.

In this state, the horizontal flap 38 is welded (joined) to the upper wall 44 of the left roof side rail 13.
Therefore, when a load acts on the left center pillar 12 from the side of the vehicle body, the load acts in parallel to the upper wall 44 (that is, in a direction along the upper wall 44).

By applying the load to the upper wall 44 in parallel, the load acts on the upper wall 44 in the buckling direction. Therefore, the deformation of the upper wall 44 can be suppressed as compared with the case where a bending load orthogonal to the upper wall 44 is applied.
As a result, the load acting on the left center pillar 12 can be efficiently transmitted from the horizontal flap 38 and the upper wall 44 to the roof arch 14.

Further, the joined upper wall 44 and horizontal flap 38 are disposed at a substantially center 40 (see FIGS. 2 and 6) of a closed cross section 18 (described later) formed by the roof panel 16 and the roof arch 14. .
Thereby, the load transmitted to the roof arch 14 can be favorably supported by the roof arch 14 (closed section 18).
In addition, it is not necessary to increase the rigidity of the left center pillar 12 more than necessary by favorably supporting the load acting on the left center pillar 12 by the closed cross section 18.

As shown in FIG. 5, the pillar inner 22 is joined to the front flange 34 and the rear flange 35 of the stiffener main body 24 by welding.
By welding (joining) the pillar inner 22 to the front flange 34 and the rear flange 35 of the stiffener main body 24, the left center pillar 12 is formed by the pillar stiffener 21 and the pillar inner 22 in a closed cross section.
As shown in FIG. 2, an inner lower flap 54 (detailed later) of the left roof side rail 13 is welded (joined) to the upper end portion 22 a of the pillar inner 22.

As shown in FIG. 1, the left roof side rail 13 is a member that extends in the longitudinal direction of the vehicle body on the left side of the roof.
The left roof side rail 13 includes a roof side rail outer 41 that is provided outside the vehicle body and forms the vehicle body outer portion, and a roof side rail inner 42 that is provided inside the vehicle body and forms the vehicle body inner portion.

The roof side rail outer 41 has an upper wall 44 provided substantially horizontally, an outer wall 45 bent downward from the outer side of the upper wall 44, and bent downward from the lower side of the outer wall 45 and toward the inside of the vehicle body. The lower inclined wall 46 and an outer lower flap 47 bent downward from the lower side of the lower inclined wall 46 and toward the outside of the vehicle body are provided.
That is, the roof side rail outer 41 is formed in a substantially U-shaped cross section so as to open toward the vehicle compartment 50 side by the upper wall 44, the outer wall 45, and the lower inclined wall 46.

  The roof side rail inner 42 includes an inner inclined wall 52 disposed on the inner side of the vehicle body of the roof side rail outer 41, an inner upper flap 53 bent substantially horizontally from the upper side of the inner inclined wall 52 toward the inner side of the vehicle body, And an inner lower flap 54 bent in an inclined manner from the lower side of the inclined wall 52 toward the outside of the vehicle body.

The inner upper flap 53 is welded (joined) to the inner side 44a while being in contact with the upper wall 44 of the roof side rail outer 41 (specifically, the inner side 44a of the upper wall 44) from below. .
Further, the inner lower flap 54 is welded (joined) to the upper end portion 22 a of the pillar inner 22.

  The inner inclined wall 52 includes an upper inner wall 56 provided substantially parallel to the outer wall 45 of the roof side rail outer 41, and a central inner side bent downward from the lower side of the upper inner wall 56 and toward the outside of the vehicle body. An inclined wall 57 and a lower inner bent wall 58 that is bent from the lower end portion of the central inner inclined wall 57 and connected to the inner lower flap 54 are provided.

As shown in FIGS. 3 and 4, the roof arch 14 includes an arch body 61 that is bridged in an arch shape on the left and right roof side rails 13 (the right roof side rail is not shown), and left and right ends of the arch body 61. Left and right reinforcing members (reinforcing members) 62 provided in the section.
Here, the roof arch 14 is a member formed symmetrically with the center in the longitudinal direction of the vehicle body as an axis. Hereinafter, the left end portion will be described and description of the right end portion will be omitted.

The arch body 61 is bridged on a joint support part (part) 56 a facing the upper end part (connection bracket) 25 of the pillar stiffener 21 in the upper inner wall 56 of the left roof side rail 13.
As shown in FIG. 6, the arch body 61 includes a bottom wall 64 arranged substantially horizontally, a front wall 65 bent upward from the front side of the bottom wall 64, and a rear side of the bottom wall 64. And a rear wall 66 bent upward.

  Further, the arch body 61 includes a front upper flange 67 bent from the upper side of the front wall 65 toward the front of the vehicle body, and a front left flange (joining part) 68 bent from the left side of the front wall 65 toward the front of the vehicle body. The rear upper flange 71 bent from the upper side of the rear wall 66 toward the rear of the vehicle body, the rear left flange (joined part) 72 bent from the left side of the rear wall 65 toward the rear of the vehicle body, and the left end of the bottom wall 64 And a left arch flap (joining part) 73 bent downward from the portion and toward the outside of the vehicle body.

  As shown in FIG. 6, the arch body 61 is formed of a bottom wall 64, a front wall 65, a rear wall 66, a front upper flange 67 and a rear upper flange 71 in a so-called hat shape.

By forming a step at the upper left end of the front wall 65, a front upper step 67 a is formed at the left end of the front upper flange 67.
Further, a rear upper step 71 a is formed at the left end of the rear upper flange 71 by forming a step at the upper left end of the rear wall 66.
The inner upper flap 53 is joined to the front upper step portion 67a and the rear upper step portion 71a by welding.

The front left flange 68 is formed integrally with the left end portion of the front wall 65, and is joined to the upper inner wall 56 (specifically, the joint support portion 56a) of the roof side rail inner 42 by welding.
The rear left flange 72 is formed integrally with the left end portion of the rear wall 66, and is joined to the upper inner wall 56 (specifically, the joint support portion 56a) of the roof side rail inner 42 by welding.
Further, the left arch flap 73 is formed integrally with the left end portion of the bottom wall 64 and joined to the central inner inclined wall 57 of the roof side rail inner 42 by welding.

In this state, the left end portion (end portion) 61a of the arch main body 61 is joined in a state of being in contact with the upper inner wall 56 (specifically, the joining support portion 56a) of the roof side rail inner 42.
Therefore, the left end 61a of the roof arch 14 is directly connected to the left roof side rail 13 without interposing a connecting member (brace) between the left end (end) 61a of the roof arch 14 and the left roof side rail 13. Yes.

Thus, by directly connecting the left end portion 61a of the roof arch 14 to the left roof side rail 13, the plate thickness dimension of the roof arch 14 can be kept uniform.
Therefore, a step (that is, a step caused by a difference in plate thickness) is removed from the roof arch 14 so that stress is not concentrated on the roof arch 14.
As a result, the roof arch 14 can be prevented from being bent due to stress concentration, and the load transmitted to the roof arch 14 can be better supported by the roof arch 14.

  The left reinforcing member 62 includes a front reinforcing rib 75 provided on the front wall 65 of the arch body 61 and a rear reinforcing rib 76 provided on the rear wall 66 of the arch body 61.

The front reinforcing rib 75 is provided in a portion 65a near the left end portion on the surface of the front wall 65 (that is, the outer surface on the vehicle body front side).
As an example of the front reinforcing rib 75, a plurality of beads 75a extending in the vertical direction are formed at predetermined intervals.

The rear reinforcing rib 76 is provided in a portion 66a near the left end portion on the surface of the rear wall 66 (that is, the outer surface on the vehicle body rear side).
As an example, the reinforcing ribs 76 are formed with a plurality of beads 76a extending in the vertical direction at predetermined intervals.

As described above, by providing the front reinforcing rib 75 on the front wall 65 of the arch main body 61 and the rear reinforcing rib 76 on the rear wall 66 of the arch main body 61, the left end portion 61a of the roof arch 14 can swing in the vertical direction. Can be suppressed.
Therefore, the load acting on the left center pillar 12 can be efficiently transmitted to the roof arch 14 via the horizontal flap 38 and the upper wall 44.
Thereby, the load transmitted to the roof arch 14 can be more favorably supported by the roof arch 14 (closed section 18).

As shown in FIG. 1, the left outer panel 15 is a panel that forms an outer surface on the left side of the vehicle body.
The left outer panel 15 includes a roof side outer panel 81 that extends in the vehicle longitudinal direction along the left roof side rail 13, and a pillar outer panel 82 that extends downward from a substantially center of the roof side outer panel 81 toward the side sill. It has.

As shown in FIG. 2, the roof side outer panel 81 is a panel that covers the left roof side rail 13 from the outside of the vehicle body, and has a stepped portion 81a along the inner side.
The stepped portion 81a is joined to the upper wall 44 of the roof side rail outer 41 (specifically, the inner side 44a of the upper wall 44) by welding while being placed from above.

The pillar outer panel 82 is a panel that covers the left center pillar 12 (particularly, the stiffener body 24) from the outside of the vehicle body.
As shown in FIG. 5, the pillar outer panel 82 is bent from the outer wall 84, the front side wall 85 bent from the front side of the outer wall 84 toward the inside of the vehicle body, and from the rear side of the outer wall 84 toward the inside of the vehicle body. A rear side wall 86, a front flange 87 bent from the front side wall 85 toward the front of the vehicle body, and a rear flange 88 bent from the rear side wall 86 toward the rear of the vehicle body are provided.

That is, the pillar outer panel 82 is formed of a so-called cross-sectional hat shape by the outer wall 84, the front side wall 85, the rear side wall 86, the front flange 87, and the rear flange 88.
The front flange 87 of the pillar outer panel 82 is joined to the front flange 34 of the stiffener body 24 by welding while being in contact with the front flange 34 from the outside of the vehicle body.
Further, the rear flange 88 of the pillar outer panel 82 is joined by welding in a state of being in contact with the rear flange 35 of the stiffener body 24 from the outside of the vehicle body.

As shown in FIGS. 1 and 2, the roof panel 16 has a panel body 91 formed in a substantially rectangular shape in plan view, and left and right step portions 92 are formed on the left and right sides of the panel body 91, respectively.
Here, the roof panel 16 is a member formed symmetrically about the center in the longitudinal direction of the vehicle body. Hereinafter, the left end portion will be described and description of the right end portion will be omitted.

The roof panel 16 is welded (joined) in a state in which the center portion 91a in the vehicle body longitudinal direction of the panel body 91 is placed on the front upper flange 67 and the rear upper flange 71 (see also FIG. 3) of the arch body 61. And the left step part 92 is joined by welding in the state mounted in the step part 81a of the roof side outer panel 81. As shown in FIG.
By welding (joining) the central portion 91a of the panel main body 91 to the front upper flange 67 and the rear upper flange 71, the closed arch portion 18 is formed by the roof arch 14 and the roof panel 16.

Next, a procedure for assembling the vehicle body structure 10 will be described with reference to FIG.
First, the horizontal flap 38 of the pillar stiffener 21 is welded (joined) to the upper wall 44 of the left roof side rail 13.

In this state, the left arch flap 73 of the roof arch 14 is joined to the central inner inclined wall 57 of the roof side rail inner 42 by welding.
At the same time, the front left flange 68 and the rear left flange 72 of the roof arch 14 are joined to the upper inner wall 56 (specifically, the joint support portion 56a) of the roof side rail inner 42 by welding.
Next, the front upper step portion 67a and the rear upper step portion 71a of the roof arch 14 are joined to the inner upper flap 53 of the roof side rail inner 42 by welding.

Therefore, the left end 61a of the roof arch 14 can be directly connected to the roof side rail inner 42 without interposing a connecting member between the left end 61a of the roof arch 14 and the roof side rail inner 42.
Thus, by directly connecting the left end portion 61a of the roof arch 14 to the left roof side rail 13, the plate thickness dimension of the roof arch 14 can be kept uniform.
The reason why the thickness of the roof arch 14 is kept uniform will be described in detail with reference to FIG.

With the left end portion 61 a of the roof arch 14 directly connected to the roof side rail inner 42, the step portion 81 a of the roof side outer panel 81 is placed on the inner side 44 a of the roof side rail outer 41.
Further, the left step 92 of the roof panel 16 is placed on the step 81a.

In this state, the left step portion 92, the step portion 81a, and the inner side 44a (including the inner upper flap 53) are joined by welding.
Thereby, the left center pillar 12, the left roof side rail 13, the roof arch 14, and the roof panel 16 are joined by welding.

Next, a case where a load acts on the left center pillar 12 from the side of the vehicle body will be described with reference to FIG.
A load F1 is applied to the pillar outer panel 82 of the left outer panel 15 from the side of the vehicle body. The pillar outer panel 82 is deformed and comes into contact with the left center pillar 12.
Therefore, the load F <b> 1 acting on the pillar outer panel 82 is transmitted to the left center pillar 12.

  The load transmitted to the left center pillar 12 is transmitted to the horizontal flap 38 of the left center pillar 12. The load transmitted to the horizontal flap 38 is transmitted to the upper wall 44 of the roof side rail outer 41 as a load F2.

Here, by applying the load F2 parallel to the upper wall 44 (that is, in the buckling direction along the upper wall 44), the load F2 is higher than when a bending load orthogonal to the upper wall 44 is applied. Deformation of the wall 44 can be suppressed.
Thereby, the load F2 applied to the upper wall 44 can be efficiently transmitted as the load F3 to the roof arch 14 through the upper wall 44.

  Furthermore, by arranging the joined upper wall 44 and the horizontal flap 38 at substantially the center 40 of the closed cross section 18, the load F3 can be evenly transmitted to the closed cross section 18 and can be well supported by the closed cross section 18. .

As described above, the load acting on the left center pillar 12 is efficiently transmitted to the roof arch 14, and the transmitted load F3 is favorably supported by the roof arch 14 (specifically, the closed cross-section portion 18). The pillar 12 can be prevented from entering the passenger compartment 50.
Moreover, it is not necessary to increase the rigidity of the left center pillar 12 more than necessary by favorably supporting the load acting on the left center pillar 12 by the closed cross section 18. Thereby, weight reduction of the left center pillar 12 (namely, vehicle body structure) can be achieved.

Further, the left reinforcing member 62 (the front reinforcing rib 75 and the rear reinforcing rib 76) can suppress the left end portion 61a of the roof arch 14 from swinging up and down.
Thereby, the load F3 acting on the roof arch 14 (closed section 18) can be more efficiently supported by the roof arch 14 (closed section 18).

  In addition, the left end 61 a of the roof arch 14 is directly connected to the left roof side rail 13. Thereby, it is possible to prevent stress from concentrating on the roof arch 14 and to better support the load F3 transmitted to the roof arch 14 by the roof arch 14 (closed section 18).

The vehicle body structure according to the present invention is not limited to the above-described embodiments, and can be changed or improved as appropriate.
For example, in the above-described embodiment, the example in which the arch body 61 includes the front and rear reinforcing ribs 75 and 76 as the left reinforcing member 62 has been described. You may prepare.

Further, in the arch body 61 of the roof arch 14, the front wall 65 and the rear wall 66 are formed in uniform height dimensions from the left end portion to the right end portion. That is, the front wall 65 and the rear wall 66 each have a uniform cross section from the left end portion to the right end portion.
Therefore, the front wall 65 and the rear wall 66 can suppress the left end portion 61a and the right end portion of the arch body 61 from swinging in the vertical direction.
Thereby, the front wall 65 and the rear wall 66 can play the role of the left reinforcing member 62 (front and rear reinforcing ribs 75 and 76).

  In the above-described embodiment, the example in which the pillar stiffener 21 is applied to the left and right center pillars 12 has been described. However, the present invention is not limited thereto, and can be applied to other pillars such as a rear pillar.

  Further, the left and right center pillars 12, left and right roof side rails 13, roof arch 14, roof panel 16, closed cross section 18, pillar stiffener 21, pillar inner 22, connecting bracket 25, horizontal flap 38, roof shown in the above embodiment are provided. The shapes of the side rail outer 41, the roof side rail inner 42, the left and right reinforcing members 62, and the beads 75a and 76a are not limited to those illustrated, and can be changed as appropriate.

  INDUSTRIAL APPLICABILITY The present invention is suitable for application to an automobile having a vehicle body structure in which a roof arch is bridged on a portion of the left and right roof side rails facing a pillar stiffener.

  DESCRIPTION OF SYMBOLS 10 ... Car body structure, 12 ... Left and right center pillar, 13 ... Left and right roof side rail (roof side rail), 14 ... Roof arch, 16 ... Roof panel, 18 ... Close cross section, 21 ... Pilast stiffener, 25 ... Connection bracket (Upper end of the pillar stiffener), 38 ... horizontal flap (flange), 41 ... roof side rail outer, 44 ... upper wall of the roof side rail outer, 50 ... vehicle compartment, 56a ... joint support part (on the upper end of the pillar stiffener) Opposing parts), 61a ... Left end part (end part) of the roof arch, 62 ... Left and right reinforcing members (reinforcing members), 68 ... Front left flange (joining part), 72 ... Rear left flange (joining part), 73 ... Left arch flap (joint site).

Claims (3)

The upper end of the pillar stiffener is connected to the roof side rail, the roof side rail is provided on each of the left and right sides of the vehicle body, and the roof arch is bridged between the left and right roof side rails and facing the upper end of the pillar stiffener. In the vehicle body structure in which a roof panel is placed on the roof arch, and a closed cross section is formed by the roof arch and the roof panel.
The roof side rail outer forming the vehicle body outer side portion of the roof side rail is formed so as to open toward the passenger compartment side and has a substantially horizontal upper wall,
The pillar stiffener is provided on the outside of the vehicle body of the roof side rail outer,
At the upper end of the Pilas stiffener, it has a flange that can be arranged substantially parallel to the upper wall,
A vehicle body structure characterized in that the flange is joined in a state of being overlapped with the upper wall, and the joined flange and the upper wall are arranged at substantially the center of the closed cross section.   The vehicle body structure according to claim 1, further comprising: a reinforcing member at an end portion of the roof arch that suppresses vertical deflection of the end portion. The roof arch is integrally formed with a joint portion to be joined to the roof side rail,
The vehicle body structure according to claim 1 or 2, wherein the roof arch is directly connected to the roof side rail by joining the joint portion to the roof side rail.

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