JP4028464B2 - Body rear pillar structure - Google Patents

Description

  The present invention relates to a vehicle body rear pillar structure.

As a conventional technique related to the vehicle body rear pillar structure, for example, there is one disclosed in Patent Document 1.
Japanese Utility Model Publication No. 61-47776

  In this type of vehicle body rear pillar structure, there is one that forms two closed cross-section structures whose horizontal cross-sections are closed in order to ensure rigidity. For example, as shown in FIG. 8, the outer panel 100 and the inner panel 101 are welded to each other at one end edge, and one end edge of another stiffener 102 is welded only to the inner panel 101. By welding the other edge portions of the outer panel 100, the inner panel 101, and the stiffener 102, the outer side closed cross-section structure portion 104 and the inner side closed cross-section structure portion 105 are formed.

  However, the above structure requires a stiffener in addition to the outer panel and the inner panel, and has a problem that the number of parts is large, resulting in an increase in weight and cost.

  Therefore, an object of the present invention is to provide a vehicle body rear pillar structure capable of reducing weight and cost.

In order to achieve the above object, the invention according to claim 1 is directed to welding an outer panel (for example, the outer panel 23 in the embodiment) and an inner panel (for example, the inner panel 24 in the embodiment) to each other at one end edge. By welding the other end edges of each other and welding the intermediate portions of each other, two closed cross-section structures whose horizontal cross-sections have a closed cross-sectional shape (for example, the outer side closed cross-section structure 47 in the embodiment and A rear pillar (for example, the rear pillar 20 in the embodiment ) formed with an inner side closed cross-section structure portion 48), and an intermediate portion in the height direction of the rear pillar is formed by the outer panel and the inner panel, and a lower portion of the rear pillar. The lower corner stiffener along the inner panel (for example, the lower corner stiffener in the embodiment) 2), the outer panel and the lower corner stiffener form a closed cross-section structure portion (for example, the closed cross-section structure portion 53 in the embodiment) instead of the inner panel, and this closed cross-section structure portion is the tailgate opening. Extending to a lower corner edge (eg, the lower corner edge 54 in the embodiment) that forms a lower corner of the portion (eg, the tailgate opening 14 in the embodiment) of the tailgate opening While the closed cross-sectional structure portion formed by the outer panel and the lower corner stiffener extends to the lower corner edge side of the lower edge portion (for example, the lower edge portion 55 in the embodiment) forming the lower portion, The upper portion extends beyond an upper corner edge (for example, the upper corner edge 57 in the embodiment) that forms an upper corner of the tailgate opening. In addition to the inner panel and the outer panel, an upper corner stiffener (for example, the upper corner stiffener 59 in the embodiment) is provided and reinforced to the upper corner edge side of the upper end edge to be formed (for example, the upper edge 58 in the embodiment). It is characterized by being.

  The invention according to claim 2 is the invention according to claim 1, wherein the closed cross-section structure portion is an outer side closed cross-section structure portion provided on the vehicle width direction outer side and the vehicle body front side (for example, the outer side closed cross-section structure portion in the embodiment). 47) and an inner side closed cross-section structure portion (for example, the inner side closed cross-section structure portion 48 in the embodiment) provided on the inner side in the vehicle width direction and on the rear side of the vehicle body, the vehicle body rear side of the outer side closed cross-section structure portion In addition, a rear combination lamp (for example, the rear combination lamp 51 in the embodiment) is disposed on the outer side in the vehicle width direction of the inner side closed cross-section structure portion.

  The invention according to claim 3 is the invention according to claim 2, wherein the outer panel includes an outer plate portion (for example, the outer plate portion 26 in the embodiment) constituting an exterior portion of the vehicle body, and a vehicle body front side of the outer plate portion. An outer side first inward extending plate portion (for example, the outer side first inward extending plate portion 27 in the embodiment) that extends inward in the vehicle width direction, and an inner side in the vehicle width direction from the vehicle body rear side of the outer plate portion. The outer side second inwardly extending plate part (for example, the outer side second inwardly extending plate part 31 in the embodiment) and the outer plate part of the outer side second inwardly extending plate part. On the other hand, an outer side rear extension plate portion (for example, the outer side rear extension plate portion 33 in the embodiment) that extends rearward from the opposite side, and the outer side second inward extension of the outer side rear extension plate portion. Outer side third inwardly extending plate portion (for example, implementation) extending inward in the vehicle width direction from the opposite side to the output plate portion Outer side third inwardly extending plate portion 34), and the inner panel is an inner plate portion (for example, in the embodiment) along the outer plate portion on the inner side in the vehicle width direction of the outer plate portion. An inner plate portion 37), an inner side inwardly extending plate portion (for example, an inner side inwardly extending plate portion 38 in the embodiment) extending from the rear side of the inner plate portion to the vehicle width direction, An inner side rear extension plate portion (for example, an inner side rear extension plate portion 39 in the embodiment) that extends rearward from the opposite side to the inner plate portion of the inner side inward extension plate portion. The outer plate portion, the outer side first inward extending plate portion, the outer side second inward extending plate portion, and the inner plate portion constitute the outer side closed sectional structure portion, and Side rear extension plate part, outer side third inward extension plate part, inner side inward extension plate part, and inner side rear extension plate Doo is to constitute the inner side closed cross section, and the outer side second inner extending plate portion and the inner side inner extending plate portion is characterized in that it is welded.

  According to the first aspect of the present invention, the outer panel and the inner panel are horizontally welded to each other at one end edge, welded from each other end edge, and further welded from each other in the middle. Since the two closed cross-section structures having the closed cross-sectional shape are formed, the two closed cross-section structures can be formed only by the outer panel and the inner panel, and the stiffener is unnecessary. Therefore, weight and cost can be reduced.

  According to the second aspect of the present invention, the outer side closed cross-section structure portion provided on the vehicle width direction outer side and the vehicle body front side by the outer panel and the inner panel, and the inner side closed cross section provided on the vehicle width direction inner side and the vehicle body rear side. And a rear combination lamp is arranged on the vehicle body rear side of the outer side closed cross-section structure portion and on the outer side in the vehicle width direction of the inner side closed cross-section structure portion. Can be covered with a combination lamp. Therefore, the welded portion between the outer panel and the inner panel does not touch the user's eyes, and the appearance is improved.

  According to the third aspect of the invention, the outer side second inwardly extending plate portion extending along the vehicle width direction of the outer panel and the inner side inward extending extending along the vehicle width direction of the inner panel. Since the plate portion serves as a welding position of the intermediate portion between the outer panel and the inner panel, the adjacent side of the outer side closed cross-section structure portion and the inner side closed cross-section structure portion can be shifted in the vehicle width direction. Therefore, the rear combination lamp can be enlarged.

  A vehicle body rear pillar structure according to an embodiment of the present invention will be described below with reference to FIGS. In the following description, front, rear, left and right are front, rear, left and right when the vehicle is moving forward.

  FIG. 1 shows a vehicle to which the vehicle body rear pillar structure of the present embodiment is applied. This vehicle has a front door 11 and a rear door 12 at the side of the vehicle body 10 and a tailgate 13 at the rear end. 2 box type. As shown in FIG. 2, a rear pillar that is a vehicle body frame member that forms a side edge of the tailgate opening 14 and a side edge of the rear door opening 15 between the tailgate 13 and the rear door 12 of the vehicle body 10. 20 stands up and down.

  FIG. 3 shows a horizontal cross section (AA cross section in FIG. 2) of the middle part in the vertical direction of the right rear pillar 20. The rear pillar 20 includes an outer panel 23 including an outer panel main body 21 and a garter 22, and an inner panel 24.

  The outer panel main body 21 includes an outer plate portion 26 constituting a side appearance portion of the vehicle body 10 and an outer side first inward extending plate portion that extends inward in the vehicle width direction from the front end portion of the outer plate portion 26 as a whole. 27, an outer side front extension plate portion 28 that extends forward as a whole from the opposite side to the outer plate portion 26 of the outer side first inward extension plate portion 27, and a rear end portion of the outer plate portion 26 And a first divided inwardly extending plate portion 29 extending inward in the vehicle width direction.

  The end portion of the garter 22 is overlapped with the end portion on the opposite side of the outer plate portion 26 of the first divided inward extending plate portion 29 of the outer panel main body 21, so that the first divided inward extending plate is provided. A second split inwardly extending plate part 32 constituting an outer side second inwardly extending plate part 31 that extends inward in the vehicle width direction from the rear end part of the outer plate part 26 as a whole, The rear side of the second divided inwardly extending plate part 32 opposite to the first divided inwardly extending plate part 29, that is, the rear side of the outer side second inwardly extending plate part 31 from the opposite side as a whole. From the opposite side to the outer side rear extension plate portion 33 extending to the second split inner extension plate portion 32 of the outer side rear extension plate portion 33, that is, the outer side second inner extension plate portion 31. The outer side third inwardly extending plate part 34 that extends inward in the vehicle width direction as a whole, and the outer side rearward extension of the outer side third inwardly extending plate part 34 And a flange portion 35 which extends rearwardly as a whole from the opposite side with respect to the section 33.

  And the end part of the 1st division | segmentation inward extension board part 29 of the outer panel main body 21 and the end part of the 2nd division | segmentation inward extension board part 32 of the garter 22 are piled up and welded, and the welding junction part 41 is carried out. As a result, the outer panel main body 21 and the garter 22 are integrated into the outer panel 23, and the first divided inward extending plate portion 29 and the second divided inward extending plate portion 32 are formed. The outer side second inward extending plate portion 31 is integrated.

  The inner panel 24 includes an inner plate portion 37 along the outer plate portion 26 on the inner side in the vehicle width direction of the outer plate portion 26, and an inner side inward extending from the rear end portion of the inner plate portion 37 in the vehicle width direction as a whole. An extension plate portion 38 and an inner side rear extension plate portion 39 that extends rearward as a whole from the opposite side to the inner plate portion 37 of the inner side inward extension plate portion 38 are provided.

  And the front end edge part of the outer side front extension board part 28 which is the front end edge part of the outer panel 23 and the front end edge part of the inner plate part 37 which is the front end edge part of the inner panel 24 are overlapped and welded, and front welding is performed. The joint portion 42 is formed, and the flange portion 35 that is the rear end edge portion of the outer panel 23 and the rear end edge portion of the inner side rearward extending plate portion 39 that is the rear end edge portion of the inner panel 24 overlap each other. The rear weld joint 43 is formed by joining and welding. Further, the outer side second inwardly extending plate part 31 that is an intermediate part of the outer panel 23 and the inner side inwardly extending plate part 38 that is an intermediate part of the inner panel 24 are overlapped and welded to be an intermediate welded joint part. 44 will be formed. Then, the outer panel 23 and the inner panel 24 are integrated by forming the front weld joint 42, the rear weld joint 43, and the intermediate weld joint 44 to form the rear pillar 20. As a matter of course, the welding of the front weld joint 42, the rear weld joint 43, and the intermediate weld joint 44 is performed at a plurality of positions in the height direction of the rear pillar 20, respectively.

  The columnar outer side closed cross-section structure 47 whose horizontal cross section forms a closed cross-section is formed by the outer panel 23 and the inner panel 24 between the front weld joint 42 and the intermediate weld joint 44 in the height direction of the rear pillar 20. The inner-side closed cross-section structure portion 48 is formed in a columnar shape in which the horizontal cross-section forms a closed cross-section shape by the outer panel 23 and the inner panel 24 that are formed in almost the entire range of the outer welded portion 43 and the intermediate weld joint portion 44. Is formed in substantially the entire range of the rear pillar 20 in the height direction. That is, the outer plate portion 26 of the outer panel 23, the outer side first inward extending plate portion 27, the outer side front extending plate portion 28, the outer side second inward extending plate portion 31, and the inner plate portion of the inner panel 24. 37 constitute the outer side closed cross-section structure portion 47, and the outer side rear extension plate portion 33 and the outer side third inner side of the outer panel 23 located between the intermediate weld joint portion 44 and the rear weld joint portion 43. The extension plate portion 34, the inner side inward extension plate portion 38 and the inner side rear extension plate portion 39 of the inner panel 24 constitute an inner side closed cross-section structure portion 48.

  As described above, in the rear pillar 20, the outer panel 23 and the inner panel 24 are welded at the one end edges on the vehicle body front side, and are welded at the other end edges on the vehicle body rear side, and further between the intermediate portions. As a result of welding, two outer side closed cross-section structures 47 and an inner side closed cross-section structure 48 whose horizontal cross-section has a closed cross-sectional shape are formed.

  Further, the outer side closed cross-section structure portion 47 and the inner side closed cross-section structure portion 47 are provided with the outer side closed cross-section structure portion 47 provided on the outer side in the vehicle width direction and on the front side of the vehicle body, and the inner side closed cross-section structure portion 48 in the vehicle width direction. It is provided inside and on the rear side of the vehicle body. More specifically, the outer side closed cross-section structure portion 47 and the inner side closed cross-section structure portion 48 are displaced as a whole without overlapping in both the vehicle width direction and the front-rear direction with the intermediate weld joint portion 44 as a boundary.

  A rear combination lamp 51 is arranged at a step portion 50 on the vehicle body rear side of the outer side closed cross-section structure portion 47 and on the outer side in the vehicle width direction of the inner side closed cross-section structure portion 48, and a lining 49 on the inner side of the inner panel 24 in the vehicle width direction. Further, a seal member 56 is attached to the rear weld joint 43, which is disposed at the peripheral edge of the tailgate opening 14 and seals a gap with a closed tailgate (not shown). The rear combination lamp 51 extends to the vicinity of the upper end portion of the rear pillar 20 as shown in FIG.

The intermediate portion in the height direction of the rear pillar 20 is formed by the outer panel 23 and the inner panel 24 as described above, but the lower portion of the rear pillar 20 is connected to the inner panel 24 as shown in FIG. After the lower corner stiffener 52 along this is welded, the outer panel 23 and the lower corner stiffener 52 form a closed section structure 53 instead of the inner panel 24 as shown in FIG. It extends to the lower corner edge 54 shown in FIG. 1 which forms the lower corner of the tailgate opening 14. Further, as shown in FIG. 6, a closed cross-sectional structure formed by the outer panel 23 and the lower corner stiffener 52 up to the lower corner edge 54 side of the lower edge 55 shown in FIG. 1 that forms the lower part of the tailgate opening 14. The part 53 extends.

  The upper portion of the rear pillar 20 is located on the upper corner edge 57 side of the upper edge 58 that forms the upper portion of the tailgate opening 14 beyond the upper corner edge 57 that forms the upper corner of the tailgate opening 14. Up to this point, an upper corner stiffener 59 is provided and reinforced in addition to the inner panel 24 and the outer panel 23 as shown in FIG.

  According to the present embodiment described above, the outer panel 23 and the inner panel 24 are welded to each other at one end edge on the vehicle body front side and at the other end edge portions on the vehicle body rear side to each other. By welding the intermediate portions, two columnar outer side closed cross-section structure portions 47 and inner side closed cross-section structure portions 48 whose horizontal cross-sections have a closed cross-sectional shape are formed. Therefore, the outer panel 23 and the inner panel 24 are formed. These two outer-side closed cross-section structures 47 and inner-side closed cross-section structures 48 can be formed, eliminating the need for a stiffener. Therefore, weight and cost can be reduced.

  Further, an outer side closed cross-section structure portion 47 provided on the vehicle width direction outer side and the vehicle body front side and an inner side closed cross section structure portion 48 provided on the vehicle width direction inner side and the vehicle body rear side by the outer panel 23 and the inner panel 24 are provided. In order to form and arrange the rear combination lamp 51 on the vehicle body rear side of the outer side closed cross-section structure portion 47 and on the outer side of the inner side closed cross-section structure portion 48 in the vehicle width direction, an intermediate weld joint 44 between the outer panel 23 and the inner panel 24 is provided. It can be covered with a rear combination lamp 51. Therefore, the intermediate weld joint 44 between the outer panel 23 and the inner panel 24 does not touch the user's eyes, and the appearance is improved.

  In addition, an outer side second inwardly extending plate part 31 extending along the vehicle width direction of the outer panel 23, an inner side inwardly extending plate part 38 extending along the vehicle width direction of the inner panel 24, and Thus, since the intermediate portion of the outer panel 23 and the inner panel 24 is welded to form the welded joint portion 44, the outer side closed cross-section structure portion 47 and the inner side closed cross-section structure portion 48 are placed on the side close to each other. It can be completely shifted in the width direction. Therefore, the width of the step portion 55 in the vehicle width direction can be increased, and the rear combination lamp 51 can be increased.

  In the above description, the right rear pillar 20 is illustrated and described. However, the left rear pillar 20 has the same configuration except that it is symmetrical.

It is the perspective view which looked at the vehicle to which the vehicle body rear pillar structure of one embodiment of the present invention was applied from the back. It is the perspective view which looked at the vehicle body except the doors and bumper of the vehicle to which the vehicle body rear pillar structure of one Embodiment of this invention was applied from the back. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2 showing a vehicle body rear pillar structure according to an embodiment of the present invention. It is arrow sectional drawing which follows the BB line in FIG. It is arrow sectional drawing which follows the CC line in FIG. It is arrow sectional drawing which follows the DD line | wire in FIG. It is arrow sectional drawing which follows the EE line | wire in FIG. It is sectional drawing which shows a vehicle body rear pillar structure.

Explanation of symbols

23 Outer panel 24 Inner panel 26 Outer plate portion 27 Outer side first inward extending plate portion 31 Outer side second inward extending plate portion 33 Outer side rearward extending plate portion 34 Outer side third inward extending plate portion 37 Inner plate portion 38 Inner side inward extending plate portion 39 Inner side rearward extending plate portion 47 Outer side closed section structure portion (closed section structure portion)
48 Inner side closed section structure (closed section structure)
51 Rear combination lamp

Claims (3)

The outer panel and the inner panel are welded to each other at one end edge, welded from each other end edge, and further welded from each other, so that the horizontal section forms a closed section shape. It has a rear pillar that forms a closed section structure part ,
An intermediate portion in the height direction of the rear pillar is formed by the outer panel and the inner panel,
In the lower part of the rear pillar, after the lower corner stiffener along the inner panel is welded, the outer panel and the lower corner stiffener form a closed section structure instead of the inner panel. The outer panel extends to the lower corner edge that forms the lower corner of the tailgate opening and extends to the lower corner edge of the lower edge that forms the lower portion of the tailgate opening. While the closed cross-section structure part formed with the corner stiffener extends,
The upper portion of the rear pillar extends from the upper corner edge forming the upper corner of the tailgate opening to the upper corner edge of the upper edge forming the upper portion of the tailgate opening. A rear pillar structure for a vehicle body, wherein an upper corner stiffener is provided and reinforced in addition to the panel and the outer panel .   The closed cross-section structure portion includes an outer side closed cross-section structure portion provided on the vehicle width direction outer side and the vehicle body front side, and an inner side closed cross-section structure portion provided on the vehicle width direction inner side and the vehicle body rear side. The vehicle body rear pillar structure according to claim 1, wherein a rear combination lamp is disposed on the vehicle body rear side of the closed cross-section structure portion and on the outer side in the vehicle width direction of the inner side closed cross-section structure portion. The outer panel includes an outer plate portion that constitutes an exterior portion of the vehicle body, an outer side first inward extending plate portion that extends inward in the vehicle width direction from the vehicle body front side of the outer plate portion, and the vehicle body of the outer plate portion. An outer side second inwardly extending plate portion that extends inward in the vehicle width direction from the rear side, and extends from the opposite side of the outer side second inwardly extending plate portion to the rear of the vehicle body. Outer side rearward extension plate part and outer side third inward extension that extends inward in the vehicle width direction from the opposite side to the outer side second inward extension plate part of the outer side rearward extension plate part And a plate part,
The inner panel extends along the outer plate portion on the inner side in the vehicle width direction of the outer plate portion, and the inner side inward extending plate extends from the rear side of the inner plate portion toward the inner side in the vehicle width direction. And an inner side rear extension plate portion that extends rearward from the opposite side to the inner plate portion of the inner side inward extension plate portion,
The outer plate portion, the outer side first inward extending plate portion, the outer side second inward extending plate portion, and the inner plate portion constitute the outer side closed cross-section structure portion,
The outer side rear extension plate portion, the outer side third inward extension plate portion, the inner side inner extension plate portion, and the inner side rear extension plate portion constitute the inner side closed cross-section structure portion. do it,
The vehicle body rear pillar structure according to claim 2, wherein the outer side second inward extending plate portion and the inner side inward extending plate portion are welded.

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