JP6022523B2 - Car body rear structure - Google Patents

Description

  The present invention relates to a rear body structure of a vehicle such as an automobile.

  For example, Patent Document 1 discloses a vehicle body lower structure in which a flange formed on a lower edge of a pillar portion extended to the rear side of a vehicle body and a flange formed on a side edge of a rear end panel are joined to each other. Yes.

JP-A-10-244963

  By the way, it is difficult to take a sufficient space in the side part of the vehicle body from the rear wheel house to the rear panel, particularly in a vehicle having a short separation distance from the rear wheel house to the rear panel, such as a light vehicle. . For this reason, an air vent opening (also referred to as an outlet opening or a ventilator) is provided in the rear panel for suppressing an increase in vehicle interior pressure when the rear gate is closed.

  However, in the vehicle body rear structure disclosed in Patent Document 1, it is difficult to provide an outlet opening in the rear panel because there are flanges joined to each other by the pillar portion side and the rear end panel side.

  Further, in the vehicle body rear structure disclosed in Patent Document 1, the flange is formed so as to protrude outward from the passenger compartment (rear side of the vehicle body). Therefore, when designing a vehicle body within a limited standard such as a light vehicle, the flange It is necessary to narrow the space in the passenger compartment by a dimension that protrudes rearward of the vehicle body.

  Furthermore, in the vehicle body rear part structure disclosed in Patent Document 1, an operator may contact the flange during the vehicle body assembly work due to the protrusion of the flange toward the rear of the vehicle body.

  Furthermore, in the vehicle body structure disclosed in Patent Document 1, if the plate thickness is changed between the pillar part and the rear end panel, a difference in rigidity occurs between the pillar part and the rear end panel, and the rigidity is low. The panel in the direction is likely to be deformed, and the flange joint portion may be broken due to a decrease in vehicle body rigidity, panel deformation, or the like.

  The present invention has been made in view of the foregoing points, and an object of the present invention is to provide a vehicle body rear structure capable of improving rigidity and strength at a joint portion between a rear pillar and a rear panel.

  To achieve the above object, the present invention provides a vehicle body rear portion having a pair of left and right rear pillars extending in the vehicle body vertical direction at the vehicle body rear portion and a rear panel extending in the vehicle width direction and joining lower ends of the pair of left and right rear pillars. Each rear pillar has a pillar general surface portion facing in the longitudinal direction of the vehicle body and a bulging surface portion bulging from the pillar general surface portion to the vehicle body rear side through a lateral step portion extending in the vehicle width direction, The rear panel includes a rear panel general surface portion joined to the pillar general surface portion, a first folded portion formed by folding back from the rear panel general surface portion along the lateral step portion toward the vehicle body rear side, and the first panel. A rear panel upper flange extending upward from the rear end of the folded portion, and the rear panel is formed between the rear panel general surface portion and the first folded portion. And having a ridge portion, and a second lateral edge line portion formed between the first folded portion and the rear panel on the flange.

  According to the present invention, the shape of the lateral step portion formed on the rear pillar at the joint portion between the rear pillar and the rear panel, and the first lateral ridge line portion and the second lateral ridge line portion formed on the rear panel along the lateral step portion. By providing each of these shapes, the rigidity and strength of the joint portion between the rear pillar and the rear panel can be improved. For example, even if there is a difference in rigidity / strength between the rear pillar and the rear panel, the deformation of the lower rigidity / strength panel is suppressed to improve the rigidity / strength of the rear of the vehicle body and Can be prevented from breaking.

  In addition, according to the present invention, it is possible to avoid the flange of the joint portion between the rear pillar and the rear panel from protruding rearward of the vehicle body as in the prior art, and the outlet opening can be provided in the rear panel. Furthermore, according to the present invention, as compared with the prior art, the space in the vehicle interior can be maximized by the dimension of the flange projecting toward the rear of the vehicle body. Furthermore, according to the present invention, since there is no obstacle as in the prior art at the time of the vehicle body assembly work, the assembly work can be performed efficiently.

  In the present invention, the rear pillar includes a rear pillar second surface portion formed on the vehicle width outer side from the pillar general surface portion and the bulging surface portion via a vertical stepped portion extending in a vehicle body vertical direction, and the rear panel includes: A second folded portion formed by folding from the rear panel general surface portion to the vehicle body front side along the vertical stepped portion, and a rear panel lateral flange extending in the vehicle width direction from the front end of the second folded portion; The rear panel includes a first vertical ridge line portion formed between the rear panel general surface portion and the second folded portion, and a second vertical ridge line portion formed between the second folded portion and the rear panel lateral flange. It is characterized by having.

  According to the present invention, the shape of the vertical step portion formed in the rear pillar at the joint portion between the rear pillar and the rear panel, and the first vertical ridge line portion and the second vertical ridge line portion formed in the rear panel along the vertical step portion. By providing each of these shapes, the rigidity and strength of the joint portion between the rear pillar and the rear panel can be improved. For example, even if there is a difference in rigidity / strength between the rear pillar and the rear panel, the deformation of the lower rigidity / strength panel is suppressed to improve the rigidity / strength of the rear of the vehicle body and Can be prevented from breaking.

  Furthermore, the present invention is characterized in that the lateral step portion, the first folded portion, and the rear panel upper flange are formed by being bent in the longitudinal direction of the vehicle body along the vertical step portion.

  According to the present invention, the vertical stepped portion and the horizontal stepped portion of the rear pillar intersect with each other, and the first folded portion of the rear panel and the rear panel upper flange follow the vertical stepped portion and bend in the longitudinal direction of the vehicle body. Yes. As a result, the rigidity and strength of the joint portion between the rear pillar and the rear panel can be further increased, the rigidity and strength of the rear portion of the vehicle body can be further improved, and breakage of the joint portion can be prevented.

  Furthermore, the present invention is characterized in that a sealer for sealing between the bulge surface portion and the rear panel upper flange is interposed between the bulge surface portion of the rear pillar and the rear panel upper flange. .

  According to the present invention, it is preferable that the sealer application portion is deformed and the sealer is peeled off by providing the sealer at a portion where the rigidity and strength are increased by the lateral step portion, the first lateral ridge line portion, and the second lateral ridge line portion. Can be avoided.

  Furthermore, in the present invention, an outlet opening is formed in the rear panel general surface portion, and the bulging surface portion includes a bead portion that is inclined downward from above toward the vehicle width outer end portion, and the bead portion is It overlaps with the outlet opening in the vertical direction of the vehicle body, and the vehicle width outer side end portion of the bead portion extends to a position where it overlaps with the lateral step portion in the vertical direction of the vehicle body.

  According to the present invention, the water transmitted from above the rear pillar is guided to the vehicle width outside by the bead portion inclined downward from above toward the vehicle width outer end portion, and also downward from the vehicle width outer end portion of the bead portion. The water transferred to can be received by the lateral step portion. Thereby, it becomes difficult for water to enter the outlet opening, and water can be prevented from entering the vehicle interior side from the outlet opening.

  Furthermore, in the present invention, an inclined surface portion that is inclined downward from above toward the vehicle width outer side end portion of the rear panel general surface portion is provided above the outlet opening and outside the vehicle width direction. The vehicle width outer side end portion of the bead portion extends to a position overlapping with the inclined surface portion in the vertical direction of the vehicle body.

  According to the present invention, even if the water transmitted from the upper side of the rear pillar passes over the lateral step portion and is transmitted downward, the inclined surface portion that overlaps with the bead portion in the vertical direction of the vehicle body from the outlet opening portion. Water can be guided in the direction of separation. Thereby, it can prevent still more reliably that water approachs into a vehicle interior side from an outlet opening part.

  According to the present invention, it is possible to obtain a vehicle body rear portion structure capable of improving the rigidity and strength at the joint portion between the rear pillar and the rear panel.

It is the principal part front view which looked at the vehicle body to which the vehicle body rear part structure which concerns on embodiment of this invention was applied from the vehicle body back. FIG. 2 is a partial enlarged front view of a part A shown in FIG. 1. FIG. 3 is a front view of a lower end portion of a rear pillar outer with a rear panel outer removed from the state of FIG. 2. It is a longitudinal cross-sectional view along the IV-IV line of FIG. FIG. 5 is a cross-sectional view taken along line VV in FIG. 2. It is a partially transparent perspective view in the junction part of a rear-pillar lower end formation panel and a rear-pillar outer.

  Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. FIG. 1 is a front view of a main part of a vehicle body to which a vehicle body rear structure according to an embodiment of the present invention is applied as viewed from the rear of the vehicle body, FIG. 2 is a partially enlarged front view of a portion A shown in FIG. 2 is a front view of the lower end portion of the rear pillar outer with the rear panel outer removed from the state of FIG. 2, FIG. 4 is a longitudinal sectional view taken along line IV-IV in FIG. 2, and FIG. 5 is taken along line VV in FIG. It is a cross-sectional view.

  In each figure, “front and rear” is the vehicle longitudinal direction, “up and down” is the vertical vertical direction (vehicle vertical direction), “left and right” is the vehicle width direction (vehicle horizontal direction), and “inside and outside” is the vehicle The interior side and the exterior side of the passenger compartment are shown. FIG. 1 shows a state in which the tailgate is removed from the rear part of the vehicle body.

  As shown in FIG. 1, a vehicle body 10 to which a vehicle body rear structure according to an embodiment of the present invention is applied includes a pair of left and right rear pillar outers (rear pillars) 12 and 12 extending in the vehicle body vertical direction at the vehicle body rear portion, and a vehicle width direction. The rear panel outer 14 extends and joins the lower ends of the pair of left and right rear pillar outers 12, 12. A tail gate opening 13 is formed by the pair of left and right rear pillar outers 12 and 12 and the rear panel 14. Since the pair of left and right rear pillar outers 12 and 12 are formed symmetrically on the left and right, the left rear pillar outer 12 will be described in detail below and the description of the right rear pillar outer 12 will be omitted.

  The rear pillar outer 12 includes a rear pillar main body 12a and a rear pillar lower end forming panel 12b that is formed separately from the rear pillar main body 12a and joined to the lower end of the rear pillar main body 12a. The rear pillar lower end forming panel 12 b is joined to the rear pillar main body 12 a and the rear panel outer 14, and functions as a member that connects the rear pillar outer 12 and the rear panel outer 14.

  In the present embodiment, the rear pillar main body 12a and the rear pillar lower end forming panel 12b are divided to form a “rear pillar”. However, the present invention is not limited to this, and the rear pillar main body 12a and the rear pillar lower end forming panel 12b May be integrally molded.

  The rear pillar outer 12 includes, for example, a rear pillar joint portion 15 in which a lower end of a separately manufactured rear pillar main body 12a and an upper end of a rear pillar lower end forming panel 12b are abutted and joined. Is bound to. Further, as will be described later, the rear surface of the rear pillar lower end forming panel 12b is joined to the front surface of the rear panel outer 14 in the vehicle body.

  As shown in FIG. 3, the rear pillar lower end forming panel 12b includes a pillar general surface portion through a pillar general surface portion 16 formed of a substantially flat surface facing the vehicle body longitudinal direction and a lateral step portion 18 extending in the vehicle width direction. 16 and a bulging surface portion 20 that bulges toward the rear of the vehicle body. The bulging surface portion 20 is located above the body of the pillar general surface portion 16. In addition, the vehicle width inner side of the horizontal stepped portion 18 is continuous with a substantially L-shaped stepped portion that is not joined to the rear panel outer 14 (see FIG. 2).

  Further, as shown in FIG. 5, the rear pillar lower end forming panel 12 b is formed by being bent outwardly from the pillar general surface portion 16 and the bulging surface portion 20 through a vertical stepped portion 22 extending in the vehicle body vertical direction. A rear pillar second surface portion 24 is provided.

  As understood from FIG. 5, the pillar general surface portion 16 is formed to bulge so as to be located behind the rear pillar second surface portion 24 relative to the vehicle body. As shown in FIG. 5, the vertical stepped portion 22 is formed by an inclined surface that is inclined from the front of the vehicle body toward the rear of the vehicle body in a cross section that is substantially orthogonal to the extending direction. Further, in FIG. 5, the rear end of the vehicle body of the vertical stepped portion 22 is continuous with the pillar general surface portion 16, and the front end of the vehicle body of the vertical stepped portion 22 is formed by being bent outwardly of the vehicle width. It is continuous with the surface portion 24.

  Returning to FIG. 3, the bulging surface portion 20 includes a linear bead portion 26 that is located on the lower side of the bulging surface portion 20 and is inclined downward from above toward the vehicle width outer end portion. The bead portion 26 overlaps with an outlet opening 28 (see FIG. 2), which will be described later in the vertical direction of the vehicle body, and extends to a position where the vehicle width outer end portion of the bead portion 26 overlaps the lateral step portion 18 in the vertical direction of the vehicle body. I'm out. The bead portion 26 is located above the outlet opening 28 in the vertical direction of the vehicle body, and the vehicle width outer end portion is located above the lateral step portion 18 in the vertical direction of the vehicle body.

  As shown in FIG. 2, the rear panel outer 14 includes a rear panel general surface portion 30 joined to the pillar general surface portion 16 of the rear pillar lower end forming panel 12b, and a lateral step portion 18 of the rear pillar lower end forming panel 12b from the rear panel general surface portion 30. And a rear panel upper flange 34 that extends upward from the rear end of the first folded portion 32.

  The rear panel general surface portion 30 is formed with a substantially oval outlet opening 28 having a long axis extending along the vertical direction of the vehicle body. The outlet opening 28 performs air venting to suppress an increase in vehicle interior pressure when a rear gate (not shown) is closed.

  Further, the rear panel outer 14 has a first lateral ridge line portion 36 formed between the rear panel general surface portion 30 and the first folded portion 32, and a first formed between the first folded portion 32 and the rear panel upper flange 34. 2 lateral ridge line portions 38.

  Further, the rear panel outer 14 includes a second folded portion 40 formed by folding from the rear panel general surface portion 30 along the vertical stepped portion 22 of the rear pillar lower end forming panel 12b to the vehicle body front side, and a vehicle from the front end of the second folded portion 40. And a rear panel lateral flange 42 extending in the width direction.

  Furthermore, the rear panel outer 14 is formed between the first vertical ridge line portion 44 formed between the rear panel general surface portion 30 and the second folded portion 40, and between the second folded portion 40 and the rear panel lateral flange 42. And a second vertical ridge line portion 46.

  As shown in FIG. 4, the lateral step portion 18, the first folded portion 32, and the rear panel upper flange 34 are each formed by being bent in the longitudinal direction of the vehicle body along the longitudinal step portion 22.

  FIG. 6 is a partially transparent perspective view of the joint portion between the rear pillar lower end forming panel and the rear pillar outer.

  A sealer for sealing between the bulging surface portion 20 and the rear panel upper flange 34 is provided between the bulging surface portion 20 on the lower end side of the rear pillar lower end forming panel 12b and the rear panel upper flange 34 on the upper end side of the rear panel outer 14. ing. In FIG. 6, the thick two-dot chain line portion indicates the sealer application portion 48 that has passed through the rear panel outer 14.

  Further, an inclined surface portion 50 that is inclined downward from above toward the vehicle width outer side end portion of the rear panel general surface portion 30 is provided above the outlet opening portion 28 and outside the vehicle width direction. The vehicle width outer side end portion of the bead portion 26 extends to a position overlapping the inclined surface portion 50 in the vehicle body vertical direction.

  The vehicle body 10 to which the vehicle body rear structure according to the present embodiment is applied is basically configured as described above. Next, the function and effect will be described.

  In the present embodiment, the shape of the lateral step portion 18 formed in the rear pillar lower end forming panel 12 b at the joint between the rear pillar lower end forming panel 12 b (rear pillar outer 12) and the rear panel outer 14, and the rear panel along the lateral step portion 18. By providing the shapes of the first lateral ridge line portion 36 and the second lateral ridge line portion 38 formed on the outer 14, the rigidity and strength of the joint portion between the rear pillar lower end forming panel 12 b and the rear panel outer 14 can be improved. .

  In the present embodiment, for example, even when there is a difference in rigidity and strength between the rear pillar lower end forming panel 12b and the rear panel outer 14, the deformation of the lower rigidity and strength panel is suppressed, and the rear part of the vehicle body is suppressed. The rigidity and strength of the joint can be improved, and breakage of the joint can be prevented.

  Further, in the present embodiment, it is possible to avoid the flange of the joint portion between the rear pillar and the rear panel from protruding rearward of the vehicle body as in the prior art, and the outlet opening 28 can be suitably provided in the rear panel outer 14. Furthermore, in this embodiment, the space in the vehicle interior can be maximized by the dimension of the flange projecting toward the rear of the vehicle body as compared with the prior art. Furthermore, in the present embodiment, since there is no obstacle as in the prior art during the vehicle body assembly work, the assembly work can be performed efficiently.

  In the present embodiment, the shape of the vertical step portion 22 formed in the rear pillar lower end forming panel 12 b at the joint portion between the rear pillar lower end forming panel 12 b and the rear panel outer 14 and the rear panel outer 14 along the vertical step portion 22. By providing the shapes of the first vertical ridge line portion 44 and the second vertical ridge line portion 46 formed in the above, the rigidity and strength of the joint portion between the rear pillar lower end forming panel 12b and the rear panel outer 14 can be improved. For example, even when there is a difference in rigidity / strength between the rear pillar lower end forming panel 12b and the rear panel outer 14, the deformation of the lower rigidity / strength panel is suppressed and the rigidity / strength of the rear part of the vehicle body is reduced. While improving, a fracture | rupture of a junction part can be prevented.

  Further, in the present embodiment, the vertical step portion 22 and the horizontal step portion 18 of the rear pillar lower end forming panel 12b intersect each other, and the first folded portion 32 and the rear panel upper flange 34 of the rear panel outer 14 are respectively connected to the vertical step portions. 22 is made to be bent in the longitudinal direction of the vehicle body. Thereby, the rigidity and strength of the joint portion between the rear pillar lower end forming panel 12b and the rear panel outer 14 can be further increased, the rigidity and strength of the rear portion of the vehicle body can be further improved, and breakage of the joint portion can be prevented. .

  Furthermore, in this embodiment, the sealer application part 48 is deformed by providing a sealer in a portion where the rigidity and strength are increased by the lateral step portion 18 and the first lateral ridge line portion 36 and the second lateral ridge line portion 38. It can avoid suitably that a sealer peels.

  Furthermore, in the present embodiment, water transmitted from above the rear pillar outer 14 is guided to the vehicle width outside by the bead portion 26 inclined downward from above toward the vehicle width outer end portion, and the vehicle width of the bead portion 26 is The water transferred downward from the outer end portion can be received by the lateral step portion 18. Thereby, it becomes difficult for water to enter the outlet opening 28, and water can be prevented from entering the vehicle interior side from the outlet opening 28.

  Furthermore, in this embodiment, even if the water transmitted from above the rear pillar outer 14 passes over the lateral step portion 18 and travels downward, the bead portion 26 overlaps with the bead portion 26 in the vehicle body vertical direction. Water can be guided in a direction away from the outlet opening portion 28 by the inclined surface portion 50 located below the inner surface 26. Thereby, it can prevent more reliably that water approachs into the vehicle interior side from the outlet opening 28.

  Furthermore, in this embodiment, the rear pillar outer 12 is divided into a rear pillar main body 12a and a rear pillar lower end forming panel 12b, so that, for example, the rear pillar main body 12a is formed thick, and the rear pillar lower end forming panel 12b. Can be formed thinner than the rear pillar body 12a. As a result, the rear pillar outer 12 can be reduced in weight while ensuring the same rigidity and strength as compared with the conventional one.

10 body 12 rear pillar outer (rear pillar)
12a Rear pillar lower end forming panel 14 Rear panel outer (rear panel)
16 Pillar general surface portion 18 Lateral step portion 20 Swelling surface portion 22 Vertical step portion 24 Rear pyra second surface portion 26 Bead portion 28 Outlet opening portion 30 Rear panel general surface portion 32 First folded portion 34 Rear panel upper flange 36 First lateral ridge line portion 38 Second Horizontal ridge line part 40 Second folded part 42 Rear panel horizontal flange 44 First vertical ridge line part 46 Second vertical ridge line part 48 Sealer 50 Inclined surface part

Claims (6)

A vehicle body rear structure having a pair of left and right rear pillars extending in the vehicle body vertical direction at the rear of the vehicle body and a rear panel extending in the vehicle width direction and joining the lower ends of the pair of left and right rear pillars,
Each rear pillar is
A general pillar portion facing the vehicle longitudinal direction,
A bulging surface portion that bulges from the pillar general surface portion to the vehicle body rear side through a lateral step portion extending in the vehicle width direction;
With
The rear panel is
A rear panel general surface portion joined to the pillar general surface portion;
A first folded portion formed by folding back from the rear panel general surface portion to the vehicle body rear side along the lateral step portion;
A rear panel upper flange extending upward from a rear end of the first folded portion;
With
Furthermore, the rear panel is
A first lateral ridge line portion formed between the rear panel general surface portion and the first folded portion;
A second lateral ridge line portion formed between the first folded portion and the rear panel upper flange;
A vehicle body rear structure characterized by comprising: The vehicle body rear structure according to claim 1,
The rear pillar is
A rear pillar second surface portion formed on the vehicle width outer side from the pillar general surface portion and the bulging surface portion via a vertical stepped portion extending in the vehicle body vertical direction;
The rear panel is
A second folded portion formed by folding back from the rear panel general surface portion to the vehicle body front side along the vertical stepped portion;
A rear panel lateral flange extending in the vehicle width direction from the front end of the second folded portion;
With
In addition, the rear panel
A first vertical ridge line portion formed between the rear panel general surface portion and the second folded portion;
A second vertical ridge line portion formed between the second folded portion and the rear panel horizontal flange;
A vehicle body rear structure characterized by comprising: The vehicle body rear structure according to claim 2,
The vehicle body rear structure, wherein the lateral step portion, the first folded portion, and the rear panel upper flange are formed by being bent in the longitudinal direction of the vehicle body along the vertical step portion. The vehicle body rear structure according to any one of claims 1 to 3,
A rear structure of a vehicle body, wherein a sealer for sealing between the bulging surface portion and the rear panel upper flange is interposed between the bulging surface portion of the rear pillar and the rear panel upper flange. The vehicle body rear part structure according to any one of claims 1 to 4,
The rear panel general surface portion is formed with an outlet opening,
The bulging surface portion includes a bead portion that slopes downward from above toward the vehicle width outer end portion,
The bead portion overlaps with the outlet opening in the vertical direction of the vehicle body, and the vehicle width outer side end portion of the bead portion extends to a position where it overlaps with the lateral step portion in the vertical direction of the vehicle body. Car body rear structure. The vehicle body rear structure according to claim 5,
An inclined surface portion that is inclined downward from above toward the vehicle width outer side end portion of the rear panel general surface portion is provided above the outlet opening and on the outer side in the vehicle width direction,
A vehicle body rear portion structure, wherein a vehicle width outer side end portion of the bead portion extends to a position overlapping with the inclined surface portion in a vehicle body vertical direction.

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