JP6916139B2 - Rear side structure of the vehicle body - Google Patents

Description

The present invention relates to a vehicle body rear side structure having a side wall portion joined to a D-pillar and an opening in the side wall portion.

For example, in an automobile (vehicle) equipped with a back door, an opening for a back door corresponding to the back door is provided at the rear end of the vehicle body, and a rear wall portion surrounds the opening for the back door. It is provided. On both sides in the vehicle width direction, side wall portions are provided in front of the rear wall portion. A rear wheel house is provided below the side wall.

A D-pillar extending upward from the upper part of the rear wheel is provided at the rear of the vehicle, and the D-pillar extends to the roof side rail extending in the front-rear direction on both sides in the vehicle width direction.
A C-pillar is provided in front of the D-pillar. Further, the side wall portion may be provided with an opening for a quarter window. The C-pillar and the D-pillar are formed by assembling a pillar inner panel and a pillar outer panel. Further, the side wall portion is formed by combining an inner panel and an outer panel. The pillar inner panel of the D pillar and the inner panel of the side wall portion are joined to each other.

By the way, when the D-pillar arranged at the rear part of the vehicle is elastically deformed in the front-rear direction of the vehicle due to the vibration during running, the elastic deformation is transmitted to the side wall portion, and the side wall portion vibrates, causing an abnormal noise in the vehicle. appear. As a method of suppressing the vibration of the D-pillar in the vehicle front-rear direction, for example, as in Patent Document 1, it is conceivable to join a reinforcing material for supporting the D-pillar to the rear portion of the side wall portion.

Japanese Unexamined Patent Publication No. 2006-193047

However, in order to suppress the vibration of the side wall due to the elastic deformation of the D-pillar in the front-rear direction of the vehicle at the rear of the vehicle, if a reinforcing material is added as in Patent Document 1, the number of parts of the vehicle increases and the weight of the vehicle increases. This is not preferable.

An object of the present invention is to provide a vehicle body rear side structure capable of suppressing vibration of a D-pillar without adding parts.

The vehicle body rear side structure for solving the above problems is provided on both sides in the vehicle width direction in front of the D pillars extending in the vehicle vertical direction on both sides in the vehicle width direction at the rear of the vehicle. It is a vehicle body rear side structure having a joined side wall portion and an opening in the side wall portion, and the D pillar is a pillar inner panel on the vehicle interior side and a pillar outside the vehicle from the pillar inner panel. The side wall portion is formed by combining the outer panels, and the side wall portion is formed by combining the inner panel on the vehicle interior side and the outer panel on the outer side of the vehicle from the inner panel. The inner panel is formed along the panel body and the opening. The pillar inner panel is provided from the opening-side flange portion, the wall portion erected from one end of the opening-side flange portion toward the panel body, and the rear end portion of the panel body on the D-pillar side. It is a gist to include a pillar-side flange portion extending toward the center and a bead provided on the panel main body in a state of being bridged between the wall portion and the rear end portion of the panel main body.

According to this, the bead extending from the rear end portion of the panel main body to the wall portion is connected from the rear end portion of the panel main body to the wall portion, and is provided on the panel main body without being divided in the middle. Therefore, the bead formed on the inner panel can suppress the elastic deformation of the D-pillar in the front-rear direction of the vehicle when the vehicle is running.

Further, with respect to the rear side structure of the vehicle body, the height of the bead may gradually decrease from the wall portion toward the rear end portion of the panel main body.
According to this, as an inner panel, a type having a wall portion erected from the rear end portion of the panel main body in order to provide the pillar side flange portion in a stepped manner from the panel main body, and a pillar side flange portion in a stepped difference from the panel main body. There is a type that extends directly from the rear end of the panel body without being provided. By gradually lowering the height of the bead from the wall toward the rear end of the panel body, the bead can be bridged between the wall and the rear end of the panel body, even for both types of inner panels. It can be provided in the state of being.

Further, the rear side structure of the vehicle body may be provided with a plurality of the beads.
According to this, it is possible to further suppress the elastic deformation of the D-pillar in the vehicle front-rear direction when the vehicle is running due to the plurality of beads.

According to the present invention, the vibration of the D-pillar can be suppressed without adding parts.

The figure which shows the rear side structure of a vehicle body from an inner panel. A partial perspective view showing an enlarged bead of the rear side structure of the vehicle body. FIG. 2 is a sectional view taken along line 3-3 of FIG. 2 showing a bead of the rear side structure of the vehicle body. FIG. 2 is a cross-sectional view taken along line 4-4 of FIG. 2 showing a bead of the rear side structure of the vehicle body.

Hereinafter, an embodiment embodying the rear side structure of the vehicle body will be described with reference to FIGS. 1 to 4.
As shown in FIG. 1, a rear wall portion 11 is provided at the rear end of the vehicle 10. A side wall portion 12 forming a rear side portion of the vehicle 10 is provided in front of the rear wall portion 11. A rear wheel house 13 is provided below the side wall portion 12.

A D-pillar 14 is joined to the rear wall portion 11 of the vehicle 10. The D-pillars 14 extend in the vertical direction of the vehicle on both sides of the rear portion of the vehicle 10 in the vehicle width direction. In the upper part of the vehicle, roof side rails 15 extending in the front-rear direction of the vehicle are provided on both sides in the vehicle width direction, and the D-pillar 14 extends to the roof side rail 15. In the vehicle 10, a rear door opening 19 is provided in front of the D-pillar 14. In the side wall portion 12, a quarter window opening 18 is provided between the D pillar 14 and the rear door opening 19 in the front-rear direction of the vehicle.

As shown in FIG. 3, the D-pillar 14 is formed by combining a pillar inner panel 17 on the vehicle interior side and a pillar outer panel 16 on the vehicle outer side of the pillar inner panel 17. The pillar outer panel 16 has a main body portion 16a having a U-shaped cross section orthogonal to the longitudinal direction of the pillar outer panel 16 and a pair of joint portions 16b extending from the main body portion 16a. The pillar inner panel 17 has a main body portion 17a having a U-shaped cross section orthogonal to the longitudinal direction of the pillar inner panel 17, and a pair of joint portions 17b extending from the main body portion 17a. The pillar outer panel 16 and the pillar inner panel 17 are assembled by joining the joint portions 16b and 17b to each other, and have a closed cross-sectional structure.

As shown in FIG. 1, a part of the side wall portion 12 is formed by combining an inner panel 21 on the vehicle interior side and an outer panel 31 on the vehicle outer side of the inner panel 21. The inner panel 21 has a frame-shaped panel body 22. The panel body 22 is formed with an opening 23 having a shape corresponding to the quarter window opening 18.

As shown in FIG. 2, the inner panel 21 has an opening side flange portion 25 provided along the opening 23. Further, the inner panel 21 has a frame-shaped wall portion 24 erected from one end of the opening side flange portion 25 toward the panel main body 22.

The inner panel 21 includes a pillar-side flange portion 26 extending from the rear end portion 22a of the panel main body 22 along the vehicle front-rear direction. The pillar-side flange portion 26 extends from the entire rear end portion 22a of the panel main body 22 along the vertical direction of the vehicle. The pillar-side flange portion 26 is joined to the joint portion 17b of the pillar inner panel 17 of the D pillar 14. By this joining, the D pillar 14 and the inner panel 21 are joined. The inner panel 21 includes a rear door side flange portion 27 extending from the front end portion 22b of the panel main body 22 along the vehicle front-rear direction. The rear door side flange portion 27 extends from the entire front end portion 22b of the panel main body 22 along the vehicle vertical direction.

As shown in FIG. 2 or 4, the inner panel 21 includes four beads 28 extending in the front-rear direction of the vehicle. The bead 28 is provided so as to be bridged between the wall portion 24 and the rear end portion 22a of the panel main body 22. Therefore, the bead 28 extends from the rear end 22a of the panel body 22 to the wall 24. The bead 28 is connected from the wall portion 24 to the rear end portion 22a of the panel main body 22, and is provided on the panel main body 22 without being divided in the middle. The bead 28 is formed by pressing the inner panel 21, and the wall portion 24 and the panel main body 22 are formed so as to be recessed toward the outer panel 31 side. That is, the bead 28 is formed by forming an intersecting surface with each of the inner surface 22c and the outer surface 22d of the panel main body 22. The beads 28 adjacent to each other in the vertical direction of the vehicle are connected to each other, and the cross-sectional view along the vertical direction of the vehicle is U-shaped. The inner surface 22c of the panel body 22 is a surface facing the vehicle interior side, and the outer surface 22d of the panel body 22 is a surface facing the outside of the vehicle interior and facing the outer panel 31. The plurality of beads 28 are arranged side by side in the vertical direction of the vehicle.

Each bead 28 is a portion formed by pressing the panel body 22 so as to have a surface intersecting the inner surface 22c and the outer surface 22d of the panel body 22. As shown in FIG. 3, when the bead 28 is viewed along the vertical direction of the vehicle, the protruding dimension of the bead 28 from the outer surface 22d of the panel main body 22 is defined as the height H of the bead 28. The height H of the bead 28 is highest at the portion connected to the wall portion 24, and gradually decreases from the wall portion 24 toward the rear end portion 22a of the panel main body 22 along the vehicle front-rear direction. The height H of the bead 28 is the lowest at the rear end portion 22a of the panel main body 22.

Next, the action and effect of the rear side structure of the vehicle body of the vehicle 10 will be described.
(1) Due to vibration during traveling, the D-pillar 14 arranged at the rear of the vehicle tries to elastically deform in the front-rear direction of the vehicle within the elastic deformation range. The pillar-side flange portion 26 of the inner panel 21 is joined to the joint portion 17b of the D-pillar 14, and the D-pillar 14 is integrated with the inner panel 21. The inner panel 21 is provided with a bead 28 extending from the rear end portion 22a of the panel main body 22 adjacent to the pillar side flange portion 26 to the wall portion 24. Therefore, the bead 28 can suppress the elastic deformation of the D pillar 14. Therefore, by providing the bead 28 on the inner panel 21 constituting the side wall portion 12 and setting the arrangement of the bead 28, a reinforcing member for supporting the D pillar 14 can be added or the plate thickness of the inner panel 21 can be increased. The vibration of the D-pillar 14 can be suppressed without doing so. As a result, it is possible to suppress the generation of abnormal noise caused by the vibration of the D-pillar 14 in the vehicle.

(2) The bead 28 has a shape extending from the rear end portion 22a of the panel main body 22 to the wall portion 24, and is not provided on the pillar side flange portion 26. Therefore, the strength of the D-pillar 14 is not lowered by providing the bead 28 on the pillar-side flange portion 26 to make the bead 28 uneven.

(3) The height H of the bead 28 gradually decreases from the wall portion 24 toward the rear end portion 22a of the panel main body 22. Therefore, even if the inner panel 21 is of a type in which the pillar side flange portion 26 extends from the rear end portion 22a of the panel main body 22, the bead 28 is connected to the wall portion 24 and the rear end portion 22a of the panel main body 22. It can be installed in a state of being bridged over.

(4) Since a plurality of beads 28 are provided, elastic deformation of the D pillar 14 in the vehicle front-rear direction when the vehicle 10 is running can be further suppressed.
The above embodiment may be changed as follows.

○ The bead 28 may be one, two, three, or five or more.
○ The inner panel 21 may be of a type provided with a wall portion erected from the rear end portion 22a of the panel main body 22 in order to provide the pillar side flange portion 26 in a stepped manner from the panel main body 22. In this case, the bead 28 may or may not be provided on the wall portion including the rear end portion 22a so as not to reach the pillar side flange portion 26.

The bead 28 may have the same height H from the wall portion 24 to the rear end portion 22a of the panel main body 22.
-In the embodiment, in the bead 28, adjacent beads 28 are connected to each other in the vertical direction of the vehicle, and the cross-sectional view along the vertical direction of the vehicle is U-shaped, but the present invention is not limited to this. The beads 28 may be formed one by one so that the cross-sectional view along the vehicle vertical direction has a mountain shape.

○ The bead 28 may be provided so as to be convex toward the vehicle interior side.

10 ... Vehicle, 12 ... Side wall, 14 ... D pillar, 16 ... Pillar outer panel, 17 ... Pillar inner panel, 21 ... Inner panel, 22 ... Panel body, 22a ... Rear end, 23 ... Opening, 24 ... Wall , 25 ... Opening side flange, 26 ... Pillar side flange, 28 ... Bead, 31 ... Outer panel.

Claims (3)

The rear side of the vehicle is provided on both sides in the vehicle width direction in front of the D-pillar extending in the vertical direction of the vehicle on both sides in the vehicle width direction. It is the rear side structure of the vehicle body,
The D-pillar is formed by combining a pillar inner panel on the vehicle interior side and a pillar outer panel on the vehicle outer side of the pillar inner panel.
The side wall portion is formed by combining an inner panel on the vehicle interior side and an outer panel on the outer side of the vehicle from the inner panel.
The inner panel is
With the panel body
An opening-side flange provided along the opening and
A wall portion erected from one end of the opening side flange portion toward the panel body, and a wall portion.
Pillar-side flanges extending from the rear end of the panel body on the D-pillar side toward the pillar inner panel,
A vehicle body rear side structure comprising: a bead provided on the panel body in a state of being bridged between the wall portion and the rear end portion of the panel body. The vehicle body rear side structure according to claim 1, wherein the bead gradually decreases in height from the wall portion toward the rear end portion of the panel main body. The vehicle body rear side structure of the vehicle according to claim 1 or 2, further comprising a plurality of the beads.

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