JP6299712B2 - Rear body structure of automobile - Google Patents

Description

  This invention is a part of a joint portion where the flanges of the rear pillar outer panel provided on the vehicle outer side in the rear pillar forming the side edge of the cargo compartment opening of the vehicle and the side outer panel forming the vehicle outer side surface are joined to each other. The present invention relates to a rear body structure of an automobile provided with a constricted portion in which a luggage compartment opening is constricted inward in the vehicle width direction.

  Some rear body structures of automobiles have a cargo compartment opening that is opened and closed by a lift gate as seen in hatchback cars, wagon cars, one box cars, and the like. Among the rear body structures of automobiles having such a luggage compartment opening, as shown in Patent Document 1, a luggage compartment opening having a design in which a side edge is constricted inward in the vehicle width direction is known. It has been. The rear part of the automobile of Patent Document 1 is provided with a back door opening (loading room opening) formed so as to gradually narrow from the upper part toward the middle part in the vertical direction so that the lower part is narrower than the upper part. In addition, a damper that absorbs vibrations when opening and closing the lift gate (back door) is connected to upper corner portions (upper side edges) on the left and right sides of the back door opening.

  By the way, the side edge of the luggage compartment opening at the rear part of the automobile does not easily bend with respect to the impact when the lift gate is closed, in addition to ensuring rigidity capable of supporting the lift gate via the damper, for example. It is required to secure rigidity, and furthermore, rigidity capable of maintaining the tightness of the weatherstrip provided between the lift gate and the edge of the cargo compartment opening when the lift gate is closed. .

  On the other hand, the constricted portion formed at a part of the side edge extending in the longitudinal direction of the cargo compartment opening of the vehicle forms a side outer panel that forms the outer side surface of the vehicle and a side edge of the cargo compartment opening and is slightly more than the side outer panel. It is formed in the junction part which joined each flange with the rear pillar outer panel which has the rear pillar recessed outside the vehicle inside the vehicle.

  However, when such a constricted portion is formed on a part of the side edge of the cargo compartment opening of the vehicle, a flange cannot be appropriately provided in the constricted portion of the side outer panel due to restrictions during molding of the side outer panel. Therefore, there is a possibility that the rigidity of the constricted portion is lowered, but Patent Document 1 does not disclose any detailed structure of the constricted portion, and in particular, the lift gate has a gently long design in the front-rear direction and the like. When the size was increased, it was more necessary to ensure the rigidity of the side edge of the vehicle luggage compartment opening, and further studies were necessary.

JP 2012-240514 A

  Accordingly, the present invention provides a rear body structure for an automobile that improves the rigidity of the constriction of the rear pillar outer panel, suppresses the decrease in rigidity of the constriction, and facilitates the design of a large lift gate having a long design in the front-rear direction. The purpose is to provide.

  This invention is a part of a joint portion where the flanges of the rear pillar outer panel provided on the vehicle outer side in the rear pillar forming the side edge of the cargo compartment opening of the vehicle and the side outer panel forming the vehicle outer side surface are joined to each other. The rear body structure of the automobile is provided with a constricted portion in which a luggage compartment opening is constricted on the inner side in the vehicle width direction, the constricted portion of the flange on the side outer panel side is provided with a notch, and the constricted portion of the rear pillar outer panel includes: The constricted portion is swelled in the vertical direction from both sides in the front-rear direction, and a vertical wall portion is formed on the outer frame in the vehicle width direction of the rear pillar outer panel, and the vertical wall portion is formed by the constricted portion. Extending linearly from the inner frame in the vehicle width direction toward the rear header, with the rear pillar outer panel having a widened portion A.

  According to the above configuration, the rigidity of the constricted portion of the gate side panel can be improved, the decrease in the rigidity of the constricted portion can be suppressed, and the design of a large lift gate having a gently long design in the front-rear direction can be facilitated. .

  More specifically, since the flange on the side outer panel side is notched in the constricted portion due to molding restrictions, the rigidity of the constricted portion is reduced.

  On the other hand, the constricted portion of the rear pillar outer panel is swelled in the vertical direction from both sides in the front-rear direction of the constricted portion, thereby reinforcing the rigidity in the vertical direction. Further, the vertical wall portion linearly extends from the constriction portion toward the rear header so as to be separated from the inner frame. Since the rear pillar outer panel is provided with a widening portion, a load in the vehicle width direction is applied to the constriction portion. Even if is input, the load is effectively transmitted to the widened portion having high rigidity in the vehicle width direction along the inner frame that linearly extends from the constricted portion to the rear header, and is formed with a small width. It is possible to suppress a decrease in rigidity of the constricted portion in the vehicle width direction.

  As an aspect of the present invention, the rear portion of the rear pillar outer panel with respect to the constricted portion is formed such that the vertical wall portion is curved outward in the vehicle width direction and joined to the flange on the side outer panel side.

  According to the above configuration, since the vertical wall portion is curved outward in the vehicle width direction, the rear portion of the rear pillar outer panel can be made more rigid in the vehicle width direction than the constricted portion. Since the formed vertical wall portion is joined to the flange on the side outer panel side, the rigidity of the rear portion can be further improved than the constricted portion of the rear pillar outer panel.

  As an aspect of the present invention, the rear end portion of the rear pillar outer panel is formed in a V shape (acute angle) toward the rear inner side.

  According to the above configuration, it is possible to increase the rigidity by receiving the load input in the vehicle width direction with respect to the constricted portion at the rear end portion of the rear pillar outer panel.

  According to the present invention, it is possible to improve the rigidity of the constricted portion of the rear pillar outer panel, suppress a decrease in the rigidity of the constricted portion, and facilitate the design of a large lift gate having a gently long design in the front-rear direction.

The top view which shows the right side of the rear part vehicle body structure of the motor vehicle of a present Example Right side view of the upper part of the rear body structure of the automobile of this embodiment Rear view showing the right side of the rear body structure of the automobile of this embodiment 1 is a plan view of the right side of the rear vehicle body structure with the side outer panel and the like removed in the state of FIG. 4 is a perspective view of the right rear pillar viewed from the lower right rear in the state of FIG. FIG. 1 is an enlarged cross-sectional view of the main part of line AA in FIG. FIG. 1 is a perspective cross-sectional view seen from obliquely below with respect to the direction of arrows BB in FIG. FIG. 1 is an enlarged cross-sectional view of the main part of line CC in FIG. FIG. 1 is an enlarged cross-sectional view of the main part of the line DD in FIG. FIG. 1 is an enlarged cross-sectional view of the main part of line EE in FIG. A plan view showing the right side of the rear body structure of a conventional automobile

An embodiment of the present invention will be described in detail with reference to the drawings.
The drawings show the rear body structure of the vehicle V of the present embodiment, FIG. 1 is a plan view showing the main part of the right body of the rear portion of the vehicle V of the present embodiment, and FIG. 2 shows the rear portion of the vehicle V of the present embodiment. FIG. 3 is a right side view showing the main part of the upper part of the vehicle body structure, FIG. 3 is a rear view showing the main part of the right body of the rear part of the vehicle V of this embodiment, and FIG. 4 is a side outer panel 61 in the state of FIG. FIG. 5 is a plan view showing a main part on the right side of the rear vehicle body structure with the rear header 3 and the roof panel 120 removed, and FIG. 5 is a perspective view of the right rear pillar 5 as viewed from the lower right rear in the state of FIG. 6 is an enlarged cross-sectional view of the main part of the AA line in FIG. 1, and FIG. 7 is a vertical cross-section of the upper right corner part 1c as viewed obliquely from above with respect to the direction of the arrow BB in FIG. FIG. 8 is an enlarged cross-sectional view of a main part taken along line CC in FIG. 1, and FIG. 9 is an enlarged cross-sectional view of a main part taken along line DD in FIG. 10 is an enlarged cross-sectional view of a main part of the EE line in FIG.

  1 and 2, the rear end panel and the rear bumper are not shown. 1 and 3 show the lift gate 2 with phantom lines, and FIG. 3 further shows the lower rear portion of the vehicle V of this embodiment with phantom lines. Further, since the rear vehicle body structure of the vehicle V of this embodiment is symmetrical, the description will mainly be made on the right side. In the following embodiments, the arrow F indicates the front of the vehicle, and the arrow R indicates An arrow LE indicates the left side in the vehicle width direction, an arrow RI indicates a right side in the vehicle width direction, and an arrow UP indicates the upper side of the vehicle.

  As shown in FIGS. 1, 3, and 4, the rear side of the vehicle V has a substantially rectangular luggage compartment opening 1 in a rear view of the vehicle and in a plan view. It is opened and closed by a lift gate 2 (back door) (see FIG. 2) pivotally attached to the upper edge.

  As shown in FIGS. 1 and 3 to 5, a rear header 3 (see FIG. 1) extending in the vehicle width direction above the cargo compartment opening 1 and a longitudinal side of the cargo compartment opening 1 are disposed at the rear of the vehicle V. A pair of left and right rear pillars 5 and 5 extending from the edge 1s to the upper corner 1c that bends to the upper horizontal edge 1u are provided.

  As shown in FIG. 2, the cargo compartment opening 1 is long in the front-rear direction while slowly descending toward the rear, and as shown in FIGS. 1 and 3, the middle part in the front-rear direction is from both sides in the vehicle width direction. It is formed with a bowl-shaped design constricted inward in the vehicle width direction. That is, the side edge 1s of the cargo compartment opening 1 is formed with a constricted portion 7 that is constricted inward in the vehicle width direction slightly forward (upward) from the middle portion in the front-rear direction (vertical direction). In front of the constricted portion 7 of the side edge 1s of the luggage compartment opening 1, a space between the constricted portion 7 and the upper corner 1c is formed in a substantially linear shape (see FIG. 1), and the rear of the constricted portion 7 is located behind It is formed with a reverse trapezoidal design when viewed from the rear of the vehicle, which is wider than the front of the constricted portion 7 and gradually decreases in the downward direction (see FIG. 3).

  1 to 5 is a part of the rear end panel, and more specifically, a lamp housing panel. 1 and FIG. 5 is a rear side panel inner, 93 in FIG. 4 is a rear wheel house outer, 94 in FIG. 1 and FIG. 4 is a rear end side panel inner, FIG. 5 denotes a belt anchor, and 96 in FIGS. 1, 3 and 4 denotes an inner panel of the rear end portion. Moreover, the code | symbol 21 in FIG. 2 is the roof wing provided in the width direction above the lift gate, and the code | symbol 22 is rear glass.

As shown in FIGS. 7 to 10, the rear pillar 5 includes a rear pillar outer panel 51 formed on the outer side of the vehicle body and a rear pillar inner panel 52 formed on the inner side of the vehicle with respect to the rear pillar outer panel 51, and the rear pillar outer panel 51 and the rear pillar are provided. Between the inner panel 52, a rear pillar reinforcement 53 is provided as a vehicle body rigid member that supports the roof panel 120 at the rear of the vehicle body.
As shown in FIG. 8 to FIG. 10, the inner frame 51 i of the rear pillar 5, that is, the inner panel 51 i of the outer panel 51, the inner panel 52, and the reinforcement 53 constituting the rear pillar 5, Inner flanges 51a, 52a, and 53a are formed so as to protrude to the inner side, and are joined together by welding in a state where the inner flange 53a of the reinforcement 53 is sandwiched between the inner flanges 51a and 52a of the outer panel 51 and the inner panel 52. ing.

  Outer flanges 51b, 52b, and 53b that protrude outward in the vehicle width direction are formed on the outer frame 51o of the rear pillar 5, that is, the outer frames 51o of the outer panel 51, the inner panel 52, and the reinforcement 53. The inner panel 52 and the outer flanges 52b and 53b of the reinforcement 53 are joined together by welding (see the figure).

  As described above, the rear pillar outer panel 51 is a rain gutter member also called a lift gate side panel provided on the left and right side edges 1 s of the cargo compartment opening 1, as shown in FIGS. 4, 5, and 8 to 10. Are integrally formed with a bottom surface portion 54 that extends horizontally in the vehicle width direction and a vertical wall portion 55 that rises in an inclined manner from the outer edge of the bottom surface portion 54 in the vehicle width direction to the vehicle outer side, and an outer frame 51o of the rear pillar outer panel 51, In other words, the outer flange 51b described above is formed at the upper end of the vertical wall portion 55 in the vehicle width direction so as to protrude upward in the vehicle width direction.

  On the other hand, as shown in FIGS. 1, 3, 7, 8, and 10, the outer frame 51 o of the rear pillar 5 in the side outer panel 61 that forms the outer side bodies on the left and right sides of the vehicle V (FIGS. 4 and 5). 5), a flange 61a is formed that is folded back and protrudes toward the inside of the vehicle so as to face the outer flange 51b of the rear pillar outer panel 51. The outer flange 51b of the rear pillar outer panel 51 and the flange 61a of the side outer panel 61 are joined to each other along the longitudinal direction (front-rear direction and up-down direction) at a plurality of locations (excluding the constricted portion 7) by spot welding. (See FIGS. 1 and 3).

  1 and 3 indicate the spot welds between the outer flange 51b of the rear pillar outer panel 51 and the flange 61a of the side outer panel 61.

  As shown in FIGS. 5 and 8, the rear pillar reinforcement 53 is composed of a rear pillar upper reinforcement 53u disposed at the front portion and a rear pillar reinforcement 53l disposed at the rear portion. It is composed of two members, and the portions where these members 53u and 53l overlap in the front and rear are integrally joined by welding.

  The rear pillar 5 is positioned so as to be slightly recessed with respect to the side outer panel 61 that forms the outer side surface of the vehicle V, as shown in FIGS. 1, 3, and 7 to 10, and the lift gate 2 is closed. At this time, as shown in FIG. 2, the outer surface of the lift gate 2 is substantially flush with the side outer panel 61. That is, the joint 4 between the rear pillar outer panel 51 and the side outer panel 61 is formed along a ridge line that substantially coincides with the outer edge in the vehicle width direction of the lift gate 2 when the lift gate 2 is closed (FIGS. 1 to 3). reference).

  As shown in FIGS. 1 to 4, the above-described constricted portion 7 is formed slightly above and in front of the substantially middle portion of the joint portion 4 formed along the side edge 1 s of the luggage compartment opening 1. In the constricted portion 7, the flange 61 a on the side outer panel 61 side is formed in consideration of the constricted shape of the edge portion of the side outer panel 61 facing the rear pillar outer panel 51, that is, the formability when forming the convex shape inward in the vehicle width direction. A notch is provided in a portion corresponding to the constricted portion 7. That is, as shown in FIGS. 1, 3, and 9, in the constricted portion 7 of the joint portion 4, the notch edge portion 62 of the flange 61 a provided with the notch of the side outer panel 61 and the flange of the rear pillar outer panel 51 Are bonded together without being welded to each other, and are bonded with an adhesive.

  On the other hand, the portions other than the constricted portion 7 of the joint portion 4 formed along the side edge 1s of the cargo compartment opening 1, that is, the front portion and the rear portion with respect to the constricted portion 7 of the joint portion 4, are illustrated in FIGS. 6 to 8 and FIG. 10, the outer flange 51b of the rear pillar outer panel 51 and the flange 61a on the side outer panel 61 side are joined together by an adhesive and a plurality of spot weldings.

  The rear pillar outer panel 51 having the constricted portion 7 described above is formed by molding a strip-shaped steel panel member having substantially the same width along the longitudinal direction (front upper direction to rear lower direction) in this embodiment. Yes (see FIGS. 4 and 5).

  In such a rear pillar outer panel 51, as shown in FIGS. 4, 5, and 9, the vertical wall portion 55 formed along the outer frame 51o of the rear pillar outer panel 51 is compared with other portions in the constricted portion 7. Then, it is formed so as to bulge upward so as to be the highest and to be reduced in the vehicle width direction.

  In this way, the rear pillar outer panel 51 is formed with a narrow portion 7 by forming a part of its longitudinal direction (a little higher than the middle and a front portion) with a small width, and the neck portion 7 is bulged upward. By doing so (see FIGS. 4, 5, and 9), the reduction in rigidity in the vehicle vertical direction due to the formation of the constricted portion 7 in the rear pillar outer panel 51 is suppressed.

  As shown in FIG. 9, the vertical wall portion 55 formed in the constricted portion 7 of the rear pillar outer panel 51 includes an upper outer inclined portion 56 that is inclined to be inclined upward and outward in the vehicle width direction at the upper portion of the vertical wall portion 55. A lower vertical portion 57 is formed in the lower portion of the wall portion 55 so as to be perpendicular to the bottom surface portion 54 or perpendicular to the upper outer inclined portion 56.

  Further, as shown in FIG. 1 and FIG. 4, the front portion of the rear pillar outer panel 51 is closer to the inner side in the vehicle width direction until the front part 1c reaches the upper corner 1c as shown in FIGS. 1 (see region Z1 in FIG. 1), and the vertical wall portion 55 positioned on the outer frame 51o is linearly separated from the inner frame 51i toward the rear header 3, that is, the vehicle A widened portion 54W that extends to the front in the width direction (toward the vehicle width direction outside in the forward direction) (see region Z2 in FIG. 1) and thereby widens the bottom surface portion 54 in front of the constricted portion 7 of the rear pillar outer panel 51. (See FIGS. 1, 3, 4, and 7). As described above, by providing the widened portion 54W in front of the constricted portion 7 of the rear pillar outer panel 51, the reduction in rigidity in the vehicle width direction due to the formation of the constricted portion 7 in the rear pillar outer panel 51 is suppressed.

  On the other hand, as shown in FIGS. 1 to 5, the rear wall of the rear pillar outer panel 51 is closer to the rear part (in front of the rear end 51 </ b> R of the rear pillar outer panel 51) than the constricted part 7. And it is curved downward.

  More specifically, as shown in FIGS. 1, 3, 4 and 5, the vertical wall portion 55 at the rear of the rear pillar outer panel 51 is narrower at the rear portion (between the constricted portion 7 and the rear end 51R). 2) and the upper end of the vertical wall portion 55 in the state viewed from the right side, as shown in FIG. 2 and FIG. Curved so as to gently descend from 7 to the rear. In this way, the constricted portion 7 is formed in the rear pillar outer panel 51 at the rear portion of the rear pillar 5 by forming the rear portion of the rear pillar outer panel 51 in a curved bridge shape so as to bulge outward in the vehicle width direction. This suppresses a decrease in rigidity in the vehicle width direction.

Further, as shown in FIGS. 1 to 5, the rear end portion 51 </ b> R of the rear pillar outer panel 51 is formed in a V shape protruding toward the rear inner side.
More specifically, as the rear portion of the rear pillar outer panel 51 is formed in the bridge shape as described above, the vertical wall portion 55 at the rear side of the bulging portion toward the outer side in the vehicle width direction The vertical wall portion 55 of the rear end portion 51R of the rear pillar outer panel 51 is formed in a V shape protruding rearward and inward in the vehicle width direction.

  Further, as shown in FIGS. 1 and 3 to 5, the left and right side edges 1 s of the cargo compartment opening 1 are provided with dampers 8 that absorb vibrations when the lift gate 2 is opened and closed. Each end in the direction (front-rear direction) is connected to the rear pillar outer panel 51 and the lift gate 2. As shown in FIGS. 1, 3, 4, and 8 to 10, the lift gate 2 is closed above the bottom 54 of the rear pillar outer panel 51 and inside the vertical wall 55 in the vehicle width direction. A damper arrangement space 80 is formed extending outward in the vehicle width direction so that the damper 8 can be arranged at the time.

  Specifically, as shown in FIGS. 1, 3, and 4, when the lift gate 2 is closed, the damper 8 extends rearward along the outer side in the vehicle width direction, that is, along the inner frame 51 i of the rear pillar outer panel 51. (In other words, the damper 8 is disposed above the vehicle with respect to the bottom surface portion 54 of the rear pillar outer panel 51).

  When the lift gate 2 is closed, the constricted portion 7 is a substantially intermediate portion in the longitudinal direction (axial direction) of the damper 8 arranged in the damper arrangement space 80 as shown in FIGS. 1, 3, 4, and 9. At a damper intermediate position 8M. The damper 8 is arranged in the damper arrangement space 80 without interfering with the rear pillar outer panel 51 even at the damper intermediate position 8M where the constricted portion 7 is located (see FIGS. 1, 3, 4, and 9). That is, the damper arrangement space 80 is located on the vehicle outer side (upper side) than the bottom surface part 54 and the lower vertical part 57 of the vertical wall part 55 so that the damper 8 does not interfere with the constriction part 7 of the rear pillar outer panel 51 at the damper intermediate position 8M. Is a space inside the vehicle width direction (see FIG. 9).

  As shown in FIGS. 1, 3, 4, and 7, the upper end of the damper 8 has a mounting flange portion that protrudes outward in the vehicle width direction with respect to the longitudinal direction (axial direction) of the damper body. In a state in which 81 is pivotally attached and the damper 8 is disposed along the vehicle width direction outer side as viewed from the rear of the vehicle, the mounting flange portion 81 of the damper 8 is fastened to the widened portion 54W, which will be described later. 9 is formed.

  4 and 7, the inner panel 52 of the rear pillar 5 and the upper reinforcement 53u of the upper part of the rear pillar 5 constituting the upper corner 1c of the cargo compartment opening 1 are provided in the cargo compartment opening 1. From the upper corner 1c to the left and right ends of the upper horizontal edge 1u, the side edge 1s of the luggage compartment opening 1 extends inward in the vehicle width direction and upward in the front direction.

  And the upper part (front part) of the rear pillar inner panel 52 is connected with the rear header reinforcement 31, the roof panel 120, and the roof side rail 121, as shown in FIG.1 and FIG.7. The upper part (front part) of the rear pillar upper reinforcement 53u is connected to the rear header reinforcement 31 and is an upper damper reinforcement as a vehicle body rigid member provided above the rear pillar upper reinforcement 53u. 14 (also referred to as an intermediate pillar structure) (see FIG. 7) and is joined to the roof side rail 121.

  Furthermore, the upper part (front part) of the rear pillar outer panel 51 is, as shown in FIGS. 1, 4, 6, and 7, a rear pillar upper reinforcement connected to a rear header reinforcement 31 that is a vehicle body rigid member. The reinforcement connection part 15 is provided by connecting with the upper part (front part) of the ment 53u.

The reinforcement connecting portion 15 of the rear pillar outer panel 51 is provided on the inner side in the vehicle width direction and in front of the widened portion 54W, as shown in FIGS. 1, 4, and 7, and as shown in FIG. A total of three panels, the panel 120, the rear pillar outer panel 51, and the rear pillar upper reinforcement 53u, are superposed in this order from the outside of the vehicle body to the inside, and are joined together by spot welding at two locations.
1, 4, and 7, the mark “X” indicates a spot welding portion between the roof panel 120, the rear pillar outer panel 51, and the rear pillar upper reinforcement 53 u.

  Further, as shown in FIG. 7, the rear pillar upper reinforcement 53u has a damper 8 on the outer side in the vehicle width direction from the part corresponding to the reinforcement connecting part 15, that is, the part corresponding to the widened part 54W. A damper support reinforcing portion 16 that supports the attachment of the attachment flange portion 81 provided on the upper portion is provided.

  The damper support reinforcing portion 16 is a flat pedestal formed by raising a portion corresponding to the widened portion 54W of the rear pillar upper reinforcement 53u toward the rear pillar outer panel 51. In the damper support reinforcing portion 16, the rear pillar outer panel 51 is formed. Are tightened with bolts B and nuts N in a superposed state so as to be sandwiched between the damper support reinforcing portion 16 and the mounting flange portion 81 of the damper 8 (see FIG. 7). That is, in the damper mounting portion 9, the rear pillar outer panel 51 is fastened together with the mounting flange portion 81 and the rear pillar upper reinforcement 53u when the mounting flange portion 81 of the damper 8 is fixed to the widened portion 54W as described above. Has been.

  In the rear part of the vehicle V of the present embodiment described above, a rear pillar outer panel 51 provided on the vehicle outer side in the rear pillar 5 forming the side edge 1s of the cargo compartment opening 1 of the vehicle V, and a side outer panel 61 forming the vehicle outer side surface, A constricted portion 7 in which the luggage compartment opening 1 is constricted inward in the vehicle width direction is provided in a part of the joint portion 4 where the flanges 51b and 61a are joined to each other (see FIGS. 1 to 4). In the portion 7, a notch (notched edge portion 62) is provided in the flange 61 a (see FIGS. 1, 3, and 9), and the constricted portion 7 of the rear pillar outer panel 51 is located above and below both sides of the constricted portion 7 in the front-rear direction. A vertical wall portion 55 is formed on the outer frame 51o on the outer side in the vehicle width direction of the rear pillar outer panel 51 (see FIG. 4 and FIG. 5). car It extends linearly from the constricted portion 7 toward the rear header 3 so as to be separated from the inner frame 51i provided on the inner side in the direction (see the region Z2 in FIG. 1), and the widened portion 54W is provided in the rear pillar outer panel 51. (See FIGS. 1, 3, 4, and 7).

  According to the above configuration, the rigidity of the constricted portion 7 of the rear pillar outer panel 51 is improved to suppress a decrease in the rigidity of the constricted portion 7, and a large size having a gently long design in the front-rear direction as shown in FIGS. The lift gate 2 can be easily designed.

Specifically, as shown in FIG. 5, the constricted portion 7 of the rear pillar outer panel 51 is bulged upward from both sides in the front-rear direction of the constricted portion 7 to reinforce the rigidity in the vertical direction.
Further, as shown in FIG. 1, the vertical wall portion 55 formed on the outer frame 51o extends linearly from the constricted portion 7 toward the rear header 3 (refer to the region Z2 in FIG. 1), and also on the inner side in the vehicle width direction. 1 is extended from the inner frame 51i (see a region Z1 in FIG. 1), and a widened portion 54W having enhanced rigidity in the vehicle width direction is provided (see FIGS. 1, 3, and 7). In addition, in the vehicle V of the present embodiment, the upper part (front part) of the rear pillar outer panel 51 from the constricted part 7 is joined to the rear header reinforcement 31 via the rear pillar reinforcement 53 which is a vehicle body rigid member. (See FIG. 7).

  As a result, even when a load in the vehicle width direction is input to the constricted portion 7 of the rear pillar outer panel 51, the widened portion 54W and the rear header reinforcement 31 via the vertical wall portion 55 that linearly extends the load. Therefore, it is possible to suppress a decrease in rigidity in the vehicle width direction of the constricted portion 7 formed with a small width.

  As described above, as the constricted portion 7 is formed in the joint portion 4, the rigidity reduction due to the notch (notched edge portion 62) provided in the flange 61 a of the side outer panel 61 is reduced in the vehicle width direction and the vertical direction. It can be suppressed in both.

  Therefore, the rigidity of the constricted part 7 of the joint part 4 can be improved, the rigidity of the constricted part 7 can be suppressed, and the large lift gate 2 having a gently long design in the front-rear direction can be easily designed.

  According to the aspect of the present invention, the rear wall of the rear pillar outer panel 51 is formed with the vertical wall portion 55 curved outward in the vehicle width direction (see FIGS. 1, 4, and 5), and the rear pillar outer panel 51. The outer flange 51b is joined to the flange 61a on the side outer panel 61 side (see FIGS. 1, 3, and 10).

  According to the above configuration, as shown in FIGS. 1, 3, 4, and 5, the rear portion of the rear pillar outer panel 51 is curved so as to bulge outward in the vehicle width direction. Also, the rear portion of the rear pillar outer panel 51 can be made more rigid not only in the vertical direction but also in the vehicle width direction with respect to the rear portion. Moreover, the outer flange 51b provided in the curved vertical wall portion 55 is joined to the flange 61a on the side outer panel 61 side, as shown in FIGS. The entire front-rear direction of the rear part from the constricted part 7 has an arch shape (bridge shape) that bulges outward in the vehicle width direction together with the flange 61a on the side outer panel 61 side. In addition, the rigidity can be further increased in the vehicle width direction.

  Therefore, it is possible to suppress a decrease in rigidity due to the formation of the constricted portion 7 in the joint portion 4.

  Further, according to the aspect of the present invention, the rear end portion 51R of the rear pillar outer panel 51 is formed in a V shape toward the rear inner side (see FIGS. 1 to 5).

According to the above configuration, even if a load to the outside in the vehicle width direction is input to the vertical wall portion 55 formed in a curved shape so as to bulge outward from the constricted portion 7 of the rear pillar outer panel 51, A force (pulling force) for pulling back the vertical wall portion 55 to be bent outward in the width direction acts on the rear end portion 51R of the rear pillar outer panel 51 to cause the vertical wall portion 55 at the rear portion of the rear pillar outer panel 51 to move. Can be supported.
Therefore, the rigidity of the rear pillar outer panel 51 in the vehicle width direction can be further improved.

  Further, the rear portion of the vehicle V of the present embodiment described above includes a rear pillar outer panel 51 on the vehicle outer side of the rear pillar 5 that forms the side edge 1s of the cargo compartment opening 1 of the vehicle V, and the side edge 1s of the cargo compartment opening 1 A damper 8 having both ends connected to the rear pillar 5 and the lift gate 2 is provided (see FIGS. 1 and 3), and an inner frame 51i on the inner side in the vehicle width direction of the rear pillar outer panel 51 when the lift gate 2 is closed. The damper 8 is extended outward in the vehicle width direction in the rear direction in plan view (see the region Z1 in FIG. 1), and the outer frame 51o on the outer side in the vehicle width direction of the rear pillar outer panel 51 corresponds to the longitudinal intermediate portion of the damper 8. From the damper intermediate position 8M of the outer panel 51 (that is, a portion corresponding to the constricted portion 7 in the front-rear direction of the rear pillar outer panel 51), it extends outward in the vehicle width direction toward the front with respect to the inner frame 51i. (Refer to region Z2 in FIG. 1), a widened portion 54W that is wider in the vehicle width direction than the bottom surface portion 54 of the damper intermediate position 8M is provided in front of the damper intermediate position 8M of the rear pillar outer panel 51; The rear pillar outer panel 51 is formed with a damper attachment portion 9 in which the attachment flange portion 81 of the damper 8 is attached to the widened portion 54W (see FIGS. 1, 3, 4, and 7), and from the damper intermediate position 8M. The rear side is configured to bulge outward and downward in the vehicle width direction (see FIGS. 1, 3, 2, and 4).

  According to the above configuration, the luggage compartment opening 1 having a design in which the lower portion is wide and easy to use in the vehicle width direction and the middle portion in the front-rear direction is constricted in the vehicle width direction can be provided. Can be secured.

  More specifically, as shown in FIG. 11, even in the rear portion of the conventional vehicle 500, the luggage compartment opening 1 side of the luggage compartment opening 1 is constricted inward in the vehicle width direction of the cargo compartment opening 1. A device in which a constricted portion 70 is formed at the edge 1s is known. In the case of such a conventional vehicle 500, when the lift gate (not shown) is closed, the damper 8 is disposed substantially straight along the vehicle front-rear direction (vertical direction) at the side edge 1s of the cargo compartment opening 1, and the damper 8 An attachment flange 581 provided on the inner side in the vehicle width direction with respect to the damper main body is attached to the upper portion of the rear pillar outer panel 551.

  However, if the luggage compartment opening 1 is formed with a large degree of constriction toward the inside in the vehicle width direction and is designed to be long and long in the front-rear direction, the damper 8 interferes with the constricted portion 70 protruding toward the vehicle width direction side. The damper 8 cannot be disposed straight along the vehicle front-rear direction, and the attachment flange 581 of the damper 8 may not be properly attached to the upper portion of the rear pillar outer panel 551.

  On the other hand, as described above, the rear pillar outer panel 51 of the rear part of the vehicle V according to the present embodiment has the outer frame 51o extending from the damper intermediate position 8M to the outer side in the vehicle width direction toward the front with respect to the inner frame 51i. Since the rear portion of the damper intermediate position 8M bulges outward in the vehicle width direction (see FIGS. 1 and 3 to 5), the luggage compartment opening 1 is The lower portion is wide in the vehicle width direction, and the intermediate portion in the front-rear direction is narrowed in the vehicle width direction to be tightened (see FIGS. 1 to 4). Further, the inner frame 51i and the damper 8 of the rear pillar outer panel 51 are extended outward in the vehicle width direction in the rearward direction in plan view (see the region Z1 in FIG. 1), and the outer frame 51o of the rear pillar outer panel 51 is moved forward from the damper intermediate position 8M. As a result of the portion extending outward in the vehicle width direction with respect to the inner frame 51i (see region Z2 in FIG. 1), the widened portion 54W is provided in the rear pillar outer panel 51 (FIGS. 1, 3, and 4). FIG. 7). Further, in the present embodiment, the mounting flange portion 81 of the damper 8 is formed so as to protrude outward in the vehicle width direction with respect to the damper body (see the same figure), and the mounting flange portion 81 is mounted on the widened portion 54W to mount the damper. It is set as the structure in which the part 9 was formed (refer the same figure).

  Therefore, even if the luggage compartment opening 1 as described above is long in the front-rear direction and constricted at the damper intermediate position 8M (see FIGS. 1 to 3), the attachment of the damper 8 can be secured.

In addition, the inner frame 51i of the rear pillar outer panel 51 extends obliquely outward in the vehicle width direction rearward in plan view (in other words, in the vehicle width direction inner side in the plan view) (see region Z2 in FIG. 1). The rear pillar outer panel 51 extends from the damper intermediate position 8M in the outer frame 51o to the inner frame 51i in the vehicle width direction outward (see the region Z1 in FIG. 1), and the rear pillar outer panel 51 is provided with a widened portion 54W. (Refer to FIG. 1, FIG. 3, FIG. 4 and FIG. 7) Since the rear portion of the damper intermediate position 8M is bulged outward in the vehicle width direction (backward in the vehicle width direction) (FIG. 4, 5), the rigidity in the vehicle width direction can be secured, and the damper intermediate position 8M is configured to bulge in the vertical direction so as to have the constricted portion 7 (see FIGS. 5 and 9). , Up and down It is possible to secure the rigidity of the direction.
That is, the rear pillar outer panel 51 of the present embodiment is formed by molding a single panel having substantially the same width along the front-rear direction, but is configured to be lightweight and highly rigid in the vertical direction and the vehicle width direction. be able to.

  From the above, the rear portion of the vehicle V according to the present embodiment may have a structure in which all of the rigidity of the side edge 1s of the cargo compartment opening 1, the design having the constricted portion 7, and the mountability of the damper 8 are established. it can.

  As an aspect of the present invention, the vertical wall portion 55 formed on the outer side in the vehicle width direction of the rear pillar outer panel 51 is inclined upward in the vehicle width direction (upward in the vehicle width direction), and the constricted portion 7 of the vertical wall portion 55 is In the formed damper intermediate position 8M, the lower part is formed to be closer to the vertical than the upper part (see FIGS. 1, 4 and 9). That is, the damper intermediate position 8M is formed with an upper outer inclined portion 56 and a lower vertical portion 57 whose lower portion is closer to the vertical than the upper outer inclined portion 56 (see FIG. 9).

  According to the above configuration, both the rigidity in the vehicle width direction of the rear pillar outer panel 51 and the layout of the damper 8 can be achieved.

  More specifically, according to this configuration, the vertical wall portion 55 of the rear pillar outer panel 51 is formed so that the lower portion thereof is closer to the vertical than the upper portion at the damper intermediate position 8M. Compared with the rear pillar outer panel 51 formed by tilting upward in the vehicle width direction with the same inclination as the upper part, the bottom surface portion 54 (lower surface) of the rear pillar outer panel 51 can be formed wider at the damper intermediate position 8M. As shown in FIG. 9, the damper arrangement space 80 can be secured also at the damper intermediate position 8M where the constricted portion 7 of the rear pillar outer panel 51 is formed.

  Moreover, as shown in FIG. 9, according to the above configuration, the upper outer inclined portion 56 is formed on the upper portion of the vertical wall portion 55 at the damper intermediate position 8M of the vertical wall portion 55 of the rear pillar outer panel 51. The rigidity in the vehicle width direction can be ensured even at the intermediate position 8M. Specifically, in consideration of formability when the panel material constituting the rear pillar outer panel 51 is formed into a shape having a constricted shape, the constricted portion 7 located at the damper intermediate position 8M of the vertical wall portion 55 4, the flange 61 a on the side outer panel 61 side is formed in a notched shape, but the rigidity is reduced by joining the flange 61 a having the notched edge 62 and the outer flange 51 b of the rear pillar outer panel 51. Can be suppressed.

  In particular, the vertical wall portion 55 is formed with the upper outer inclined portion 56 at the damper intermediate position 8M, so that the vertical wall portion 55 includes the damper intermediate position 8M and the upper portion along substantially the entire longitudinal direction (longitudinal direction of the rear pillar outer panel 51). By continuously forming the outer inclined portion 56, the rigidity in the vehicle width direction can be further increased (see FIGS. 1 and 3 to 5).

  As an aspect of the present invention, the front portion of the rear pillar outer panel 51 is connected to a rear pillar reinforcement 53 connected to the rear header reinforcement 31, thereby forming a reinforcement connection portion 15 at the front portion. 6 (see FIGS. 6 and 7), a damper support reinforcing portion 16 is provided outside the reinforcement connecting portion 15 in the vehicle width direction (see FIG. 7).

  According to the above configuration, the cargo compartment opening 1 is provided at the damper mounting portion 9 (see FIGS. 1, 3, 4, and 7) in which the mounting flange portion 81 of the damper 8 is mounted on the damper support reinforcing portion 16 together with the rear pillar outer panel 51. The rigidity of the side edge 1s can be improved.

Specifically, as described above, the reinforcement connecting portion 15 is formed in the front portion of the rear pillar outer panel 51 (see FIGS. 1, 4, and 7).
On the other hand, in the widened portion 54 </ b> W at the outer portion in the vehicle width direction than the reinforcement connection portion 15 at the front portion of the rear pillar outer panel 51, the vehicle body rigidity member is set so that the mounting flange portion 81 of the damper 8 sandwiches the rear pillar outer panel 51. A damper mounting portion 9 fastened to a damper support reinforcing portion 16 provided in the rear pillar reinforcement 53 is formed (see FIGS. 1, 3, 4, and 7).

  As described above, the rear pillar outer panel 51 is coupled to the rear pillar reinforcement 53 connected to the rear header reinforcement 31 at the reinforcement connecting portion 15 and the damper mounting portion 9 at different positions in the vehicle width direction. (See FIGS. 6 and 7) Since both the rear header reinforcement 31 and the rear pillar reinforcement 53 are vehicle body rigid members, the rigidity of the side edge 1s of the gate opening can be improved. Moreover, as shown in FIG. 7, the damper mounting portion 9 also serves as mounting of the damper 8 to the rear pillar 5, and the damper mounting portion 9 contributes to improving the rigidity of the side edge 1 s of the rear pillar outer panel 51, and the rear pillar outer panel 51. A damper 8 can be attached to the.

  Therefore, even if the lift gate 2 has a gentle design in the front-rear direction and becomes heavier as it becomes larger, the lift gate 2 can be firmly supported by the side edge 1s of the rear pillar outer panel 51 via the damper 8. .

In the correspondence between the configuration of the present invention and the above-described embodiment, the automobile of the present invention corresponds to the vehicle body V of the embodiment.
The flanges of the rear pillar outer panel and the side outer panel correspond to the inner flange 51a of the rear pillar outer panel and the flange 61a of the side outer panel, but the present invention is not limited to the configuration of the above-described embodiment.

  For example, in the above-described embodiment, the front portion of the rear pillar outer panel 51 is connected to the rear header reinforcement 31 via the rear pillar reinforcement 53 (see FIG. 7). As an embodiment, the rear header reinforcement 31 may be directly connected.

  Specifically, although not shown, the rear header reinforcement 31 extending in the vehicle width direction at the upper lateral edge 1u of the cargo compartment opening 1 is connected to the side corner from the upper corner 1c portion of the cargo compartment opening 1 or the upper corner 1c portion. Extending to the top of 1s, the front part of the rear pillar outer panel 51 is connected to the outer edge of the rear header reinforcement 31 in the vehicle width direction instead of the rear pillar reinforcement 53, and the reinforcement connection part is connected. It may be configured.

  This reinforcement connecting portion is integrated with each other by spot welding at two locations in a state in which a total of three panels of a roof panel 120, a rear pillar outer panel 51, and a rear header reinforcement 31 are superposed in this order from the outside of the vehicle body. (Not shown).

  Further, in this configuration, similarly to the rear pillar reinforcement 53 of the above-described embodiment in which the damper support reinforcing portion 16 is provided, the damper support reinforcing portion is provided on the outer side in the vehicle width direction from the reinforcement connecting portion. (Not shown) The damper mounting portion is fastened with a bolt and a nut to a damper support reinforcing portion provided on the rear header reinforcement 31 which is a vehicle body rigid member so that the mounting flange portion 81 of the damper 8 sandwiches the rear pillar outer panel 51. Can be configured.

  As described above, the present invention is a joint in which the flanges of the rear pillar outer panel provided on the vehicle outer side in the rear pillar that forms the side edge of the cargo compartment opening of the vehicle and the side outer panel that forms the vehicle outer side surface are joined to each other. This is useful for a rear body structure of an automobile in which a constricted portion in which a luggage compartment opening is constricted inward in the vehicle width direction is provided in a part of the portion.

V ... Vehicle 1 ... Cargo compartment opening 1s ... Side edge 3 of cargo compartment opening ... Rear header 4 ... Joint 5 ... Rear pillar 7 ... Constriction 51 ... Rear pillar outer panel 51R ... Rear end 51b of rear pillar outer panel ... Outer flange 51o of rear pillar outer panel ... outer frame 51i ... inner frame 54W ... widened portion 55 ... vertical wall portion 61 ... side outer panel 61a ... side outer panel flange 62 ... notched edge

Claims (3)

A luggage compartment opening is formed at a part of a joint portion where the flanges of the rear pillar outer panel provided on the vehicle outer side and the side outer panel forming the vehicle outer side surface are joined to each other in the rear pillar that forms the side edge of the vehicle luggage compartment opening. A rear body structure of a vehicle provided with a constricted portion constricted inward in the vehicle width direction,
A notch is provided in the constricted portion of the flange on the side outer panel side,
The constricted portion of the rear pillar outer panel is bulged in the vertical direction from both sides of the constricted portion in the front-rear direction;
A vertical wall portion is formed on the outer frame on the outer side in the vehicle width direction of the rear pillar outer panel,
A rear vehicle body structure in which the vertical wall portion extends linearly from the constricted portion toward the rear header so as to be separated from the inner frame in the vehicle width direction, and a widened portion is provided on the rear pillar outer panel. 2. The rear body structure of the automobile according to claim 1, wherein the rear wall portion of the rear pillar outer panel has a vertical wall portion curved outward in the vehicle width direction and joined to a flange on the side outer panel side. The rear body structure of an automobile according to claim 1 or 2, wherein a rear end portion of the rear pillar outer panel is formed in a V shape toward the rear inner side.

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