JP5544722B2 - Rear body structure of the vehicle - Google Patents

Description

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

  In general, a vehicle such as a 5-door hatchback is provided with an opening to which the back door is attached at the rear of the vehicle body, and a rear header is extended above the opening along the vehicle width direction. Further, a quarter pillar extends upward from the vicinity of the wheel house of the rear wheel. The upper end portion of the quarter pillar is coupled to the outer end portion of the rear header in the vehicle width direction. The rear header has a closed cross section extending in the vehicle width direction, and the quarter pillar has a closed cross section extending upward. These closed sections are both closed in the front-rear direction and have a hollow extending in the vehicle width direction or the vertical direction.

  On the outside of the rear header in the vehicle width direction, a roof side rail extending along the front-rear direction on both sides of the roof, and both sides of the opening from the rear end portion of the roof side rail to the rear And a rear pillar extending to the rear. These roof side rails and rear pillars are connected to the connecting portions, respectively.

  By the way, conventionally, various techniques for improving the rigidity of the rear body structure of the vehicle have been proposed. For example, Patent Document 1 discloses a technique for improving the rigidity of the vehicle body by providing a continuous closed cross-section structure at the joint between the rear header and the pillar.

JP 2006-137208 A

  However, it has been difficult to apply the technique described in Patent Document 1 to a vehicle such as the above five-door hatchback for the following reason.

That is, the roof side rail has a closed cross section extending in the longitudinal direction, the closed cross section is connected to the junction of the rear header and quota over pillar. Therefore, the coupling portion has a structure communicating with the closed cross section of the roof side rail and opens in the front-rear direction. For this reason, the closed cross section of the rear header and the closed cross section of the quarter pillar are interrupted at the connecting portion, and it is difficult to form these closed cross sections continuously.

  Accordingly, the present invention has been made in view of such a point, and an object of the present invention is to provide a vehicle that can continuously form a closed cross-sectional structure of a rear header and a quarter pillar to improve vehicle body rigidity. It is to provide a rear body structure.

The rear body structure of the vehicle according to the present invention includes a rear header extending in the vehicle width direction above the opening of the rear portion of the vehicle body and having a first closed cross section extending in the same direction as the rear header. extending from the end downward, and quotas over pillar having a second closed cross section extending in the vertical direction, extends forward from an end portion in the vehicle width direction outer side of the rear header, the third extending in a longitudinal direction A roof side rail having a closed cross section; and a rear pillar having a sixth closed cross section that extends rearward from the outer end of the rear header in the vehicle width direction along the opening . The quarter pillar extends in the vertical direction to form a second closed cross section with the inner panel of the quarter pillar, and is connected to an upper end of the pillar portion, and the rear header and the quarter pillar are coupled to each other. A quarter reinforcement formed integrally with a side rail portion disposed in or near the portion, extending in the front-rear direction along the roof side rail and communicating with the third closed cross section. The rear vehicle body structure of the present invention is provided between the side rail portion and the inner panel of the quarter pillar, and forms a fourth closed cross section with the inner panel to form the first closed cross section and the A joint member that continuously connects the second closed section is provided . The connecting portion includes a series of lines continuing in the vehicle width direction and the up-down direction constituted by the rear header and the quarter pillar, and a series of lines continuing in the front-rear direction constituted by the roof side rail and the rear pillar. Is the intersection where The upper end of the quarter pillar is coupled to the end of the rear header in the vehicle width direction, the rear end of the roof side rail, and the front end of the rear pillar at the coupling portion. The joint member includes a top plate portion arranged separately from the surface of the inner panel of the quarter pillar, and is bent from the front end portion of the top plate portion to extend to the surface of the inner panel of the quarter pillar. And a rear surface portion that is bent from a rear end portion of the top plate portion and extends to the surface of the inner panel of the quarter pillar. A flange portion extending along the surface of the inner panel of the quarter pillar is provided at a front end portion of the front portion of the joint member, and a front end portion of the rear surface portion of the joint member is provided with the quarter portion. Flange portions extending along the surface of the inner panel of the pillar are provided, and the joint member is coupled to the surface of the inner panel of the quarter pillar at these flange portions, thereby The front-rear direction of the fourth closed cross-section connecting the first closed cross-section and the second closed cross-section is blocked .

  In this configuration, since the first closed cross section of the rear header and the second closed cross section of the pillar portion of the quarter pillar can be continued via the joint member, the rigidity of the vehicle body can be improved and the steering stability can be improved. .

  It is preferable that the joint member has a node portion that partitions between the first closed cross section and the fourth closed cross section.

  In this configuration, the joint portion between the rear header and the quarter pillar is provided with the node portion using a part of the joint member, so that the vehicle body rigidity is further improved.

The rear header has a hinge reinforcement that forms the first closed cross section with an outer panel of the rear header on the outer side in the vehicle width direction of the rear header, and the hinge reinforcement includes the It is preferable to have a node part which partitions between the 1st closed section and the 4th closed section.

  In this configuration, the joint portion between the rear header and the quarter pillar is provided with a node portion using a part of the hinge reinforcement, so that the vehicle body rigidity is further improved. Further, by providing both the joint and the joint member, the vehicle body rigidity can be further improved.

  Further, when the joint portion of the joint member and the joint portion of the hinge reinforcement are arranged at a predetermined interval and a fifth closed cross section is formed between these joint portions, Can be further improved.

  An end portion on the outer side in the vehicle width direction of the outer panel of the rear header and an end portion on the outer side in the vehicle width direction of the hinge reinforcement are stacked on the joint member. It is preferable that three members of the outer panel, the hinge reinforcement, and the joint member are joined.

  In this configuration, since the three members are joined in the stacked portion, the coupling strength of these three members can be improved, and the vehicle body rigidity can be improved.

  As described above, according to the present invention, the closed section of the rear header and the closed section of the quarter pillar can be continued via the joint member, so that the vehicle body rigidity is improved and the steering stability is improved. Can do.

1 is a perspective view showing a rear portion of a vehicle according to a first embodiment of the present invention. It is a perspective view which shows the structure of the inner panel in the periphery of the coupling | bond part of a rear header and a quarter pillar. It is a perspective view which shows the state which has arrange | positioned the joint member in the coupling | bond part of FIG. FIG. 4 is a perspective view showing a state in which a side rail reinforcement, a hinge reinforcement, and a rear pillar reinforcement are further arranged in the structure of FIG. 3. It is a perspective view which shows the state which has arrange | positioned the reinforcement of a quarter pillar further to the structure of FIG. FIG. 6 is a perspective view showing a state in which an outer panel of a rear header is further arranged in the structure of FIG. 5. It is the VII-VII sectional view taken on the line of FIG. It is the VIII-VIII sectional view taken on the line of FIG. It is the IX-IX sectional view taken on the line of FIG. It is the XX sectional view taken on the line of FIG. It is the XI-XI sectional view taken on the line of FIG. It is sectional drawing which shows the closed cross-section structure concerning 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<First Embodiment>
FIG. 1 is a perspective view showing a rear portion of a vehicle 11 according to the present embodiment. As shown in FIG. 1, the vehicle 11 is a five-door hatchback type, and has an opening 71 at a rear portion to which a not-shown flip-up door is attached.

  At the top of the vehicle 11, a roof panel 13, a rear header 15 extending along the vehicle width direction at the rear of the roof panel 13, and extending along the front-rear direction on both sides of the roof panel 13. A roof side rail 17 is provided.

  A side sill 19 extending along the front-rear direction on both sides of a floor (not shown) and a wheel house 23 located on the rear end side of the side sill 19 are provided at the lower portion of the vehicle 11.

  A front pillar (not shown), a center pillar 21, a quarter pillar 25, and a rear pillar 27 are provided on the side of the vehicle 11 in order from the front. The center pillar 21 is erected in the vertical direction between the roof side rail 17 and the side sill 19. The quarter pillar 25 is erected upward from the wheel house 23, and an upper end of the quarter pillar 25 is an end portion on the outer side in the vehicle width direction of the rear header 15, a rear end portion of the roof side rail 17, and a rear pillar 27. Combined with the front end. The rear pillar 27 extends along the opening 71 further rearward from the coupling portion 29.

  In a region surrounded by the quarter pillar 25, the rear pillar 27, and the wheel house 23, a substantially triangular opening 73 is formed as a so-called triangular window opening. An opening 75 to which a rear door panel (not shown) is attached is formed in a region surrounded by the roof side rail 17, the center pillar 21, the side sill 19, the wheel house 23, and the quarter pillar 25.

  FIG. 2 is a perspective view showing a structure around the joint portion 29 between the rear header 15 and the quarter pillar 25. In FIG. 2, only the inner panel constituting the wall portion closest to the vehicle interior is shown as the vehicle body component around the coupling portion 29. As shown in FIG. 2, there are a header inner panel 31 of the rear header 15, a quarter inner panel 33 of the quarter pillar 25, a side inner panel 35 of the roof side rail 17, and a rear inner panel 37 of the rear pillar 27. Inner panels such as are arranged.

  The quarter inner panel 33 has a main portion 33a extending in the vertical direction and a protruding portion 33b protruding from the main portion 33a toward the side inner panel 35. The main portion 33a is formed with a concave portion recessed inward in the vehicle width direction along the vertical direction, and a second closed cross section that extends in the vertical direction with a quarter reinforcement 39 described later. C2 is formed.

  An upper end portion of the main portion 33 a of the quarter inner panel 33 is coupled to an end portion on the outer side in the vehicle width direction of the header inner panel 31. The front end of the quarter inner panel 33, that is, the end of the protruding portion 33 b is coupled to the rear end of the side inner panel 35. A rear portion of the quarter inner panel 33 is coupled to a front end portion of the rear inner panel 37. Each inner panel is couple | bonded by joining means, such as welding.

  FIG. 3 is a perspective view showing a state in which a joint member is arranged in the vicinity of the coupling portion 29 in FIG. As shown in FIG. 3, the joint member 47 is composed of a series of lines formed by the header inner panel 31 and the quarter inner panel 33 that continue in the vehicle width direction and the vertical direction, and the side inner panel 35 and the rear inner panel 37. It is provided at the intersection where a series of lines continuing in the front-rear direction is formed.

  The joint member 47 is attached to the surface of the quarter inner panel 33, and forms a fourth closed cross section C <b> 4 (see FIG. 11) extending in the vertical direction between the joint inner panel 33 and the quarter inner panel 33.

  The joint member 47 includes a top surface portion 47a that is spaced apart from the surface of the quarter inner panel 33, an end portion on the front side, an end portion on the rear side, and an end portion on the inner side in the vehicle width direction of the top surface portion 47a. And a front surface portion 47b, a rear surface portion 47c, an inner surface portion 47d, and an outer surface portion 47e that are bent from the end portion on the outer side in the vehicle width direction and extend to the surface of the quarter inner panel 33.

  Flange portions 47f extending along the surface of the quarter inner panel 33 are respectively provided at the front end portions of the front surface portion 47a, the rear surface portion 47c, and the inner side surface portion 47d. The joint member 47 is coupled to the surface of the quarter inner panel 33 at these flange portions 47f.

  The outer side surface portion 47e is bent from the end portion on the outer side in the vehicle width direction of the top surface portion 47a and extends downward along the surface of the quarter inner panel 33. A lower end portion E (see FIG. 11) of the outer side surface portion 47e is separated from the surface of the quarter inner panel 33. Therefore, the joint member 47 has a structure in which the front side, the rear side, and the inner side in the vehicle width direction are closed and the lower side is opened. The lower opening communicates with a closed cross section C2 in a pillar portion described later.

  FIG. 4 is a perspective view showing a state in which a side drain force 41, a rear reinforcement 43, and a hinge reinforcement 45 are further arranged in the structure of FIG. As shown in FIG. 4, the side drain force 41 is provided along the side inner panel 35 and forms a closed section C <b> 3 with the side inner panel 35. The side drain force 41 is coupled to the side inner panel 35 at flange portions provided on both sides along the side inner panel 35.

  The rear reinforcement 43 is provided along the rear inner panel 37 and forms a sixth closed section C6 with the rear inner panel 37 (see FIG. 8). The rear reinforcement 43 is coupled to the rear inner panel 37 at flange portions 43 a provided on both sides along the rear inner panel 37.

  The hinge reinforcement 45 is provided on each side of the rear header 15 in the vehicle width direction. These hinge reinforcements 45 are portions where the tip of a not-shown flip-up door that closes the opening 71 is rotatably attached via a hinge that is not shown. Each hinge reinforcement 45 is provided so as to cover a part of the header inner panel 31 on the outer side in the vehicle width direction. Each hinge reinforcement 45 is provided with flange portions 45a at the front end portion and the rear end portion thereof, and is coupled to the rear inner panel 37 at these flange portions 45a. The outer side in the vehicle width direction of the hinge reinforcement 45 is bent in the order of the inclined portion 45b and the tip portion 45c in the shape of the inner side surface portion 47d and the top surface portion 47a of the joint member 47. 47d and a part of the top surface portion 47a are covered.

  FIG. 5 is a perspective view showing a state in which the quarter reinforcement 39 of the quarter pillar 25 is further arranged in the structure of FIG. As shown in FIG. 5, the quarter reinforcement 39 is formed by integrally forming a pillar portion 51 extending in the vertical direction and a side rail portion 53 extending in the front-rear direction so as to cover a part of the joint member 47. It is a T-shaped member.

  The pillar portion 51 is coupled to the quarter inner panel 33 at flange portions provided on both sides in the vertical direction. Near the center of the pillar portion 51 in the width direction, a convex portion protruding outward in the vehicle width direction is continuously formed along the vertical direction. Thereby, the pillar part 51 forms the closed cross section C2 between the quarter inner panels 33 (refer FIG. 8).

  The side rail portion 53 has an end on the front side coupled to the rear end of the side drain force 41. The rear end portion of the side rail portion 53 is coupled to the front end of the rear reinforcement 43.

  FIG. 6 is a perspective view showing a state in which the header outer panel 49 of the rear header is further arranged in the structure of FIG. As shown in FIG. 6, the header outer panel 49 is arranged along the header inner panel 31, the vehicle width direction center portion is coupled to the header inner panel 31, and both sides in the vehicle width direction are hinge reinforcements. 45. The header outer panel 49 forms a first closed section C1 between the header inner panel 31 and the hinge reinforcement 45 as shown in FIG.

  As shown in FIGS. 7 to 10, in the vehicle 11 of the present embodiment, the rear header 15 has a first closed cross section C <b> 1 formed along the vehicle width direction, and the quarter pillar 25 includes the quarter reinforcement 39. The pillar portion 51 and the quarter inner panel 33 have a second closed section C2 formed along the vertical direction, and the roof side rail 17 has a third closed section C3 formed along the front-rear direction. The rear pillar 27 has a sixth closed section C6 formed along the front-rear direction on the extended line of the third closed section C3 of the roof side rail 17.

  In the rear vehicle body structure in which each closed cross section is formed in this manner, the rear header 15, the pillar portion 51 in the quarter pillar 25, the vicinity of the coupling portion 29 where the end portions of the roof side rail 17 and the rear pillar 27 gather together are described above. The first closed section C1, the second closed section C2, the third closed section C3, and the sixth closed section C6 communicate with each other. When a joint member is not provided at or near the coupling portion 29 as in the prior art, the closed cross section of the rear header 15 and the closed cross section of the quarter pillar 25 are interrupted in the vicinity of the coupling portion 29. The closed section of was discontinuous.

  On the other hand, in the rear vehicle body structure according to the present embodiment, by providing the joint member 47 in the vicinity of the coupling portion 29, that is, at the intersection, the first closed cross section C1 of the rear header 15 and the second closed cross section C2 of the pillar portion are separated. The joint member 47 is continuously connected by a fourth closed cross section C4. That is, as shown in FIGS. 9 and 11, by providing the joint member 47 at the intersection, the front surface portion 47b of the joint member 47 is disposed on the front side of the intersection, and the rear surface portion of the joint member 47 on the rear side. By arranging 47c, the front-rear direction of the fourth closed section C4 is blocked at the intersection.

  On the other hand, the lower end portion E side of the joint member 47 is covered by the upper end portion of the pillar portion 51, and a part of the lower end portion E side of the joint member 47 is disposed in the second closed cross section C2. That is, the lower side of the fourth closed section C4 of the joint member 47 exists in the second closed section C2. As a result, the second closed section C2 and the fourth closed section C4 have the closed section structure continuous in the vertical direction. Further, the upper side of the fourth closed section C4 of the joint member 47 is disposed adjacent to the first closed section C1 of the rear header 15 via the inner side surface portion 47d. Thereby, the closed cross section is continuously formed from the rear header 15 to the lower end of the pillar portion 51 in the order of the first closed cross section C1, the fourth closed cross section C4, and the second closed cross section C2.

  Further, a series of closed cross sections from the rear header 15 to the pillar portion 51 are partitioned by an inner side surface portion 47d of the joint member 47 and an inclined portion 45b of the hinge reinforcement 45 as shown in FIGS. The inner side surface portion 47d and the inclined portion 45b function as nodes in the series of closed cross sections, and contribute to the improvement of the vehicle body rigidity. A node portion composed of the inner side surface portion 47d and the inclined portion 45b extends obliquely upward from the quarter inner panel 33 toward the outside in the vehicle width direction.

  Further, as shown in FIG. 11, the front end portion 49 a of the header outer panel 49 on the outer side in the vehicle width direction and the front end portion 45 c of the hinge reinforcement 45 on the outer side in the vehicle width direction are the top surface portion of the joint member 47. It is laminated on 47a. Three members of the header outer panel 49, the hinge reinforcement 45, and the joint member 47 are joined in this laminated portion. These three members are bonded using a bonding method such as laser welding or weld bonding. In addition, when joining by laser welding, it is good to provide the opening for welding operations in the quarter inner panel 33 grade | etc., For example.

  As described above, the rear vehicle body structure in the present embodiment is provided between the side rail portion 53 and the quarter inner panel 33, and the first closed section C4 is formed between the inner panel 33 and the first closed cross section C4. A joint member 47 that continuously connects the closed cross section C1 and the second closed cross section C2 is provided. Therefore, the first closed cross section C1 of the rear header 15 and the second closed cross section C2 of the pillar portion 51 of the quarter pillar 25 can be continuously arranged via the joint member 47. Thereby, vehicle body rigidity can be improved and steering stability can be improved.

  Moreover, in this embodiment, since the joint member 47 has the inner side surface part 47d used as the node part which partitions off between the 1st closed cross section C1 and the 4th closed cross section C4, vehicle body rigidity further improves.

  In the present embodiment, the rear header 15 has a hinge reinforcement 45 that forms a first closed cross section C1 with the header outer panel 49 on the outer side in the vehicle width direction of the rear header 15. Since the hinge reinforcement 45 has the inclined portion 45b serving as a node for partitioning between the first closed section C1 and the fourth closed section C4, the vehicle body rigidity is further improved.

  Further, in the present embodiment, since the two node portions including the inner side surface portion 47d and the inclined portion 45b are arranged in parallel, the vehicle body rigidity can be further improved.

  Further, in the present embodiment, a front end portion 49a on the outer side in the vehicle width direction of the header outer panel 49 and a front end portion 45c on the outer side in the vehicle width direction of the hinge reinforcement 45 are laminated on the joint member 47. Since the three members of the header outer panel 49, the hinge reinforcement 45, and the joint member 47 are joined in the laminated portion, it is possible to improve the vehicle body rigidity by improving the coupling strength of these three members.

Second Embodiment
FIG. 12 is a cross-sectional view showing a rear vehicle body structure according to the second embodiment of the present invention. Here, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 12, the inner side surface portion 47d of the joint member 47 functioning as a node portion and the inclined portion 45a of the hinge reinforcement 45 are arranged at a predetermined interval. A fifth closed cross section C5 is formed between the inner side surface portion 47d and the inclined portion 45a. Thereby, the vehicle body rigidity is further improved.

<Other embodiments>
Note that the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made without departing from the spirit of the present invention. For example, in the above embodiment, the joint member has an inner side surface portion that functions as a node portion, and the hinge reinforcement has an inclined portion that functions as a node portion. However, the present invention is not limited to this. For example, any one of the joint member and the hinge reinforcement may have a node portion, or both may not have a node portion.

  Moreover, in the said embodiment, although the case where the node part was provided between the 1st closed cross section and the 4th closed cross section was illustrated, for example, a node part is between the 2nd closed cross section and the 4th closed cross section. It may be provided.

  In the above embodiment, the case where the three members of the header outer panel, the hinge reinforcement, and the joint member are joined at the laminated portion is illustrated. However, for example, all three members are joined at the same location. It does not have to be.

11 Vehicle 15 Rear Header 17 Roof Side Rail 25 Quarter Piler 27 Rear Pillar 29 Joint 31 Header Inner Panel 33 Quarter Inner Panel 37 Rear Inner Panel 39 Quarter Rain Force 43 Rear Rain Force 45 Hinge Reinforcement 47 Joint Member 49 Header Outer Panel 51 Pillar part 53 Side rail part 55 Quarter outer panel 71,73,75 Opening part C1 1st closed cross section C2 2nd closed cross section C3 3rd closed cross section C4 4th closed cross section C5 5th closed cross section

Claims (5)

A rear header having a first closed cross section extending in the vehicle width direction above the opening of the rear portion of the vehicle body and extending in the same direction; and extending downward from an end of the rear header in the vehicle width direction; and quotas over pillar having a second closed cross section extending in the vertical direction, the extended forward from an end portion in the vehicle width direction outer side of the rear header, and roof side rail having a third closed section extending in the longitudinal direction, the In the rear body structure of the vehicle, including a rear pillar extending rearwardly from the outer end of the rear header in the vehicle width direction along the opening and having a sixth closed section ,
The quarter pillar extends in the vertical direction to form a second closed cross section with the inner panel of the quarter pillar, and is connected to an upper end of the pillar portion, and the rear header and the quarter pillar are coupled to each other. A quarter reinforcement formed integrally with a side rail portion disposed in or near the portion, extending in the front-rear direction along the roof side rail, and communicating with the third closed cross section;
Provided between the side rail portion and the inner panel of the quarter pillar, a fourth closed section is formed with the inner panel, and the first closed section and the second closed section are continuously connected. comprising a joint member,
The connecting portion includes a series of lines continuing in the vehicle width direction and the up-down direction constituted by the rear header and the quarter pillar, and a series of lines continuing in the front-rear direction constituted by the roof side rail and the rear pillar. And the upper end of the quarter pillar is coupled to the end of the rear header in the vehicle width direction, the rear end of the roof side rail, and the front end of the rear pillar at the coupling portion. And
The joint member includes a top plate portion arranged separately from the surface of the inner panel of the quarter pillar, and is bent from the front end portion of the top plate portion to extend to the surface of the inner panel of the quarter pillar. A front surface portion provided, and a rear surface portion that is bent from the rear end portion of the top plate portion and extends to the surface of the inner panel of the quarter pillar,
A flange portion extending along the surface of the inner panel of the quarter pillar is provided at a front end portion of the front portion of the joint member, and a front end portion of the rear surface portion of the joint member is provided with the quarter portion. Flange portions extending along the surface of the inner panel of the pillar are provided, and the joint member is coupled to the surface of the inner panel of the quarter pillar at these flange portions, thereby A rear vehicle body structure in which a front-rear direction of the fourth closed cross-section connecting the first closed cross-section and the second closed cross-section is closed .   2. The rear body structure of the vehicle according to claim 1, wherein the joint member includes a node portion that partitions between the first closed section and the fourth closed section. The rear header has a hinge reinforcement that forms the first closed cross section with the outer panel of the rear header on the outer side in the vehicle width direction of the rear header,
3. The rear body structure of the vehicle according to claim 1, wherein the hinge reinforcement includes a node portion that partitions the first closed section and the fourth closed section. The rear header has a hinge reinforcement that forms the first closed cross section with the outer panel of the rear header on the outer side in the vehicle width direction of the rear header,
The hinge reinforcement has a node portion that partitions between the first closed cross section and the fourth closed cross section,
3. The joint portion of the joint member and the hinge reinforcement of the joint portion are arranged at a predetermined interval, and a fifth closed section is formed between the joint portions. The rear body structure of the vehicle described in 1. An end portion on the outer side in the vehicle width direction of the outer panel of the rear header and an end portion on the outer side in the vehicle width direction of the hinge reinforcement are stacked on the joint member. 5. The rear body structure of the vehicle according to claim 3 , wherein three members of an outer panel, the hinge reinforcement, and the joint member are joined.

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