JP2522691Y2 - Body rear structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to a rear body structure of a vehicle body constituting a rear portion of a vehicle body.

[Conventional technology]

Generally, the rear structure of the vehicle body is
A vehicle body rear structure disclosed in Japanese Patent Application Laid-Open Publication No. H10-209,043 is known.

In this vehicle body rear structure, as shown in FIG. 6, an upper back panel 72 of a vehicle body rear part 70 is joined to a suspension tower 74 and a roof side inner 76 as a vehicle body inner wall forming member.

However, in the rear structure of the vehicle body, as shown in FIG. 7, the upper back panel 72 is formed by a flange 72A formed upward along the vertical wall portion 76A of the roof side inner 76 in the vehicle vertical direction. It is joined to the roof side inner 76. Therefore, since the joint is in the peeling direction with respect to the load in the vehicle width direction, the joint strength is not sufficient, which causes the vibration and noise of the vehicle.

[Problems to be solved by the invention]

The present invention has been made in view of the above-described circumstances, and has as its object to obtain a vehicle body rear structure capable of improving the strength of a joint portion between an upper back panel and a vehicle body inner wall forming member.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a vehicle body inner wall forming member having an inner wall portion near a rear suspension attachment portion at a rear portion of a vehicle body and having a protruding portion bulging inward in a vehicle width direction; Along the vehicle width direction, the vehicle width direction end portion extending outward in the vehicle width direction is joined to a wall portion extending along the vehicle width direction of the protrusion from a direction perpendicular to the vehicle width direction. A back panel that is disposed along the vehicle body vertical direction at the rear of the vehicle body, and a wall portion that extends outward in the vehicle width direction is perpendicular to the vehicle width direction at the vehicle width direction end of the upstream panel. And a spring support joined from the direction.

[Action]

In the present invention having the above structure, a protruding portion bulging inward in the vehicle width direction is formed on a vehicle body inner wall forming member constituting an inner wall portion near a rear suspension mounting portion at a rear portion of the vehicle body. A vehicle width direction end portion of the upper back panel extending outward in the vehicle width direction is joined to a wall extending along the vehicle width direction from a direction perpendicular to the vehicle width direction.
Further, a vehicle width direction end portion of the spring support extending outward in the vehicle width direction is joined to a wall portion extending along the vehicle width direction of the spring support from a direction perpendicular to the vehicle width direction. Accordingly, the joint between the upper panel and the vehicle body inner wall forming member and the joint between the upper panel and the spring support form a shear joint in the vehicle width direction.
For this reason, the joint between the spring support and the upper back panel and the joint between the upper back panel and the vehicle body inner wall forming member are subjected to a load in the vehicle width direction acting on the upper back panel via the spring support. Strength can be improved.

〔Example〕

 An embodiment of the present invention will be described with reference to FIGS.

In the drawings, the arrow FR indicates the forward direction of the vehicle, the arrow IN indicates the inward direction of the vehicle, and the arrow UP indicates the upward direction of the vehicle.

As shown in FIG. 5, a rear wheel house 11 is disposed at the rear of the vehicle body 10.

As shown in FIGS. 1 and 2, the rear wheel house
11 is a rear wheel house outer that constitutes the outer part in the vehicle width direction
12 and a rear wheel house inner 14 constituting an inner portion in the vehicle width direction.

As shown in FIG. 3, the lower portion of the rear wheel house outer 12 protrudes outward in the vehicle width direction, and the
Forming 12A. Further, a vertical wall portion 12C is provided from a tire radially outer edge portion 12B of the tire accommodating portion 12A toward a tire radially outer side (upward in FIG. 3), and serves as a vehicle body inner wall forming member.

As shown in FIGS. 1 and 2, a substantially central portion of the vertical wall portion 12 </ b> C of the rear wheel house outer 12 in the vehicle front-rear direction is bulged inward in the vehicle width direction and is formed as a protruding portion 15. . The front portion 15A of the protruding portion 15 has a rectangular shape in which the vehicle vertical direction is slightly longer than the vehicle front-rear direction, as viewed from the vehicle width direction inside, and includes a front wall portion 15B and an upper wall portion 15C. I have.

The rear portion 15D of the protruding portion 15 has a rectangular shape that is slightly longer in the vehicle longitudinal direction than in the vehicle vertical direction when viewed from the vehicle width direction inside. The rear part 15D of the protruding part 15 is one step higher in the vehicle vertical direction than the front part 15A, and the bulging width inward in the vehicle width direction is one step thinner, and is continuous with the upper wall part 15C of the front part 15A. The front wall 15E and the upper wall 15F are provided. The width of the rear end portion 15G of the protruding portion 15 inward in the vehicle width direction is gradually reduced, and is connected to the vertical wall portion 12C.

The rear wheel house inner 14 has a tire accommodating portion 14A bulging inward in the vehicle width direction. As shown in FIG. 3, the tire radially outer edge of the tire accommodating portion 14A extends outward in the vehicle width direction, and
B. The flange 14B is provided on the outer side 1 in the tire radial direction of the tire accommodating portion 12A of the rear wheel house outer 12.
It is welded to 2B from below in the vehicle vertical direction.

As shown in FIG. 2, a rectangular through hole 14C is formed in the center of the rear wheel house inner 14 in the vehicle front-rear direction, so that an upper portion of a rear suspension (not shown) penetrates. I have. Around this through hole 14C,
Outer flange 14D in the vehicle width direction, inner flange 14E in the vehicle width direction,
A front flange 14F in the vehicle front-rear direction and a rear flange 14G in the vehicle front-rear direction are continuously provided substantially upward in the vehicle vertical direction, respectively.

As shown in FIG. 2, a spring support 16 is disposed above the through hole 14C of the rear wheel house inner 14 in the vehicle vertical direction. The upper wall portion 16A of the spring support 16 has a rectangular shape slightly longer in the vehicle width direction than in the vehicle front-rear direction. The upper wall portion 16A of the spring support 16 has a through hole 16B substantially at the center, and the upper end of a rear suspension (not shown) is inserted. Around this through hole 16B, a flange 16C is continuously provided substantially upward in the vehicle vertical direction. The outer end in the vehicle width direction of the upper wall portion 16A of the spring support 16 is
5 is welded to the upper wall 15C of the front portion 15A from above in the vehicle vertical direction.

The horizontal cross-sectional shape of the spring support 16 is U-shaped with the opening facing outward in the vehicle width direction.
D, a vehicle width direction inner wall portion 16E and a rear wall portion 16F are provided.
In addition, the front wall 16D, the vehicle width direction inner wall 16E, and the rear wall 16F.
Are bent substantially toward the front of the vehicle, substantially toward the outside in the vehicle width direction, and substantially toward the rear of the vehicle to form a flange 16G, a flange 16H, and a flange 16J, respectively.

As shown in FIG. 1, these flanges 16G, 16H and 16J
Is welded to the vicinity of the through hole 14C of the tire accommodating portion 14A from above in the vehicle vertical direction. In addition, the inner peripheral surfaces of the lower ends of the front wall portion 16D, the vehicle width direction inner wall portion 16E, and the rear wall portion 16F are respectively a vehicle width direction inner flange 14E of the rear wheel house inner 14, a vehicle front-rear direction front flange 14F, and a vehicle front-rear direction. It is welded to the rear flange 14G. Further, the outer side flange 14D in the vehicle width direction of the rear wheel house inner 14 is provided with a front portion 15A of the protruding portion 15.
Is welded to the inner wall portion 15J in the vehicle width direction.

The outer end in the vehicle width direction of the front wall portion 16D of the spring support 16 is welded to the front wall portion 15B of the front portion 15A of the protrusion 15 from the front side in the vehicle front-rear direction. The outer end in the vehicle width direction of the rear wall portion 16F of the spring support 16 is welded to the rear wall portion 15H of the front portion 15A of the protruding portion 15 from the rear side in the vehicle front-rear direction.

As shown in FIG. 5, at the rear of the cabin of the vehicle body 10, an up-back panel 20 which is elongated in the vehicle width direction is disposed.

As shown in FIGS. 1 and 2, a front portion of the back panel 20 has a substantially horizontal step portion 20C lower than a substantially horizontal rear portion 20B with a vertical wall portion 20A interposed therebetween. Is provided. The front end of the step 20C is bent downward to form a front wall 20D.

As shown in FIG. 4, the rear part of the back panel 20
The outer end of the vehicle 20B in the vehicle width direction is the upper wall of the rear part 15D of the protruding part 15.
It is welded to the 15F from above the vehicle in the vertical direction.

As shown in FIG. 1, the outer end in the vehicle width direction of the vertical wall portion 20A of the upper back panel 20 is welded to the front wall portion 15E of the rear portion 15D of the projection 15 from the front side in the vehicle front-rear direction. The outer end in the vehicle width direction of the step portion 20C of the upper back panel 20 is welded to the upper wall portion 16A of the spring support 16 from the upper side in the vehicle vertical direction, that is, from the direction perpendicular to the vehicle width direction, The spring support 16 is welded to the upper wall 15C of the front portion 15A of the protruding portion 15 with the upper wall 16A of the spring support 16 interposed therebetween from above in the vehicle vertical direction.

A cutout 22 for inserting the flange 16C of the spring support 16 is formed on the outer side in the vehicle width direction of the stepped portion 20C of the upper back panel 20.

In addition, the outer side in the vehicle width direction of the front wall portion 20D of the upper back panel 20 is bulged downward to increase the welding area of the front portion 15A of the protruding portion 15 with the front wall portion 15B. 20E. The outer end of the bulging portion 20E in the vehicle width direction is welded to the front wall portion 16D of the spring support 16 from the front side in the vehicle front-rear direction, that is, the direction perpendicular to the vehicle width direction. The front wall portion 16B is welded to the front wall portion 15B of the front portion 15A of the protruding portion 15 with the front wall portion 16D interposed therebetween.

Reference numeral 30 in FIGS. 3 and 4 indicates a roof side outer, and reference numeral 32 in FIG. 3 indicates a quarter panel.

 Next, the operation of the present embodiment will be described.

In this embodiment, a projection 15 bulging inward in the vehicle width direction is formed on the vertical wall portion 12C of the rear wheel house outer 12, and the projection 15 is formed on the outer side of the upper back panel 20 in the vehicle width direction. The vehicle width direction ends extending toward the vehicle are joined from a direction perpendicular to the vehicle width direction.

Further, each end in the vehicle width direction of the upper back panel 20 extending outward in the vehicle width direction is joined to a wall portion extending in the vehicle width direction of the spring support 16 from a direction perpendicular to the vehicle width direction. I have.

Therefore, the joint surface between the upper back panel 20 and the protrusion 15 of the rear wheel house outer 12 and the upper back panel 20
The joint surface between the spring support 16 and the spring support 16 serves as a shear joint in the vehicle width direction. For this reason, the spring support 16 and the upper back panel 20 are not affected by a load in the vehicle width direction acting on the upper back panel 20 via the spring support 16.
And the strength of the joint between the back panel 20 and the protruding portion 15 of the rear wheel house outer 12 can be improved, so that vibration and noise of the vehicle can be suppressed.

Further, in the above embodiment, the joint surface between the front wall portion 15B of the projecting portion 15 and the front wall portion 20D of the upper back panel 20, and the vertical wall portion of the front wall portion 15E of the projecting portion 15 and the upper back panel 20. 20A
Are joints in the vertical direction of the vehicle. For this reason, sufficient strength of the joint can be ensured even in the vertical load acting on the upper back panel 20, so that vibration and noise of the vehicle can be suppressed.

Further, in the above embodiment, the vehicle width direction inner side wall portion 15J of the protruding portion 15 is provided near the point of application of force from the rear suspension, that is, near the center of the through hole 16B of the spring support 16. By the width direction inner wall part 15J,
Since the strength of the spring support 16 can be improved, vibration, noise, and the like of the vehicle can be suppressed.

[Effect of the invention]

Since the present invention is configured as described above, it has an excellent effect that the strength of the joint between the upper back panel and the vehicle body inner wall forming member can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of the rear structure of the vehicle body according to one embodiment of the present invention as viewed from the front inside of the vehicle, FIG. 2 is an exploded perspective view of FIG.
FIG. 3 is a sectional view taken along the line III-III of FIG. 1, and FIG.
FIG. 5 is a schematic perspective view showing the rear part of the vehicle body to which the vehicle body rear structure of one embodiment of the present invention is applied, FIG. 6 is a perspective view showing the conventional vehicle body rear structure, and FIG. Fig. 6 VII
FIG. 7 is a sectional view taken along line VII. 10 ... body, 11 ... rear wheel house, 12 ... rear wheel house outer, 12C ... vertical wall, 15 ... protruding part, 15B,
15E: Front wall, 15C, 15F: Upper wall, 20: Snapback panel, 20A: Vertical wall, 20B: Rear, 20C: Step, 20D: Front wall.

Claims (1)

(57) [Scope of request for utility model registration] 1. A vehicle body inner wall forming member having an inner wall portion in the vicinity of a rear suspension mounting portion at a rear portion of a vehicle body and having a protrusion bulging inward in the vehicle width direction; An upper back panel having a vehicle width direction end extending outward in the vehicle width direction and joined to a wall extending along the vehicle width direction of the protrusion from a direction perpendicular to the vehicle width direction. A spring disposed at the rear of the vehicle body along the vehicle body vertical direction and having a wall extending outward in the vehicle width direction joined to a vehicle width direction end of the up-back panel from a direction perpendicular to the vehicle width direction. A rear body structure comprising: a support;