JP2015089803A - Vehicle body rear part structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle body rear part structure which improves the strength and rigidity of a bracket while securing a space in a vehicle cabin and secures the layout flexibility of the bracket.SOLUTION: A vehicle body rear part structure 1A includes: a rear pillar 3; a quarter pillar 4 disposed at the front side of a vehicle 1 relative to the rear pillar 3; and a wheel house inner 51 and a wheel house outer 56 which are disposed between the rear pillar 3 and the quarter pillar 4. The vehicle body rear part structure 1A includes a bracket 20 provided at a position, which corresponds to a fuel filler pipe 15 in a fore and aft direction of the vehicle 1, and extending in the fore and aft direction, the bracket 20 where a rear end part 22 is joined to the rear pillar 3 and a front end part 24 is joined to the quarter pillar 4. The bracket 20 includes a plate-like general surface part 21 facing a width direction of the vehicle 1. The general surface part 21 is disposed between the wheel house inner 51 and the wheel house outer 56.

Description

  The present invention relates to a vehicle body rear structure.

2. Description of the Related Art Conventionally, a vehicle rear structure provided with a filler guard for protecting a fuel supply section when an impact is applied to the vehicle is known.
For example, in Patent Document 1, a rear wheel arch that extends from a rear wheel arch provided above a rear wheel toward the rear of the vehicle body, a side member upper provided on an extension line of a door beam, and a rear wheel from a rear portion of the side member upper. A side member lower extending downward toward the rear of the arch, and a filler pipe for refueling between the side member upper and the door beam and on the extension line of the door beam A vehicle rear structure is disclosed in which a filler guard (corresponding to “bracket” in claims) is provided.

  The filler guard includes a guard portion having a substantially U-shaped cross section and a cover portion that closes the opening of the guard portion, and is formed in a closed cross section by the guard portion and the cover portion. According to Patent Document 1, even when an impact is applied to the vehicle, the load can be transmitted and distributed in the front-rear direction of the vehicle via the side member upper, the filler guard, and the rear door beam, and the filler pipe can be used for the filler pipe. It is said that the deformation of can be suppressed.

JP 2010-188873 A

  However, in the vehicle body rear structure according to the prior art, since the bracket is arranged so as to spread in the width direction of the vehicle, there is a possibility that the space in the vehicle interior is sacrificed by providing the bracket. On the other hand, when the width of the bracket is narrowed in order to secure a space in the vehicle compartment, the strength and rigidity of the bracket will be reduced. That is, the conventional vehicle body rear structure still has a problem in that a space in the vehicle interior is secured without reducing the strength and rigidity of the bracket.

  In addition, since the layout of the fuel supply unit varies depending on the position of the fuel tank, the vehicle type, and the like, it is necessary to ensure the degree of freedom in layout when installing the bracket. On the other hand, in the rear body structure of the prior art, since the bracket is arranged in the damper stiffener, there remains a problem in terms of ensuring the flexibility of layout.

  Therefore, the present invention has been made in view of the above circumstances, and it is an object to provide a vehicle body rear structure capable of enhancing the strength and rigidity of the bracket while ensuring space in the vehicle interior and ensuring the freedom of layout of the bracket. To do.

  In order to solve the above-described problem, the invention described in claim 1 forms a design surface in a vehicle body side portion of a vehicle (for example, the vehicle 1 in the embodiment), and a fuel supply portion (for example, a fuel filler pipe in the embodiment). 15) and a first pillar (for example, a rear pillar 3 in the embodiment) that extends in the vertical direction of the vehicle at the rear end of the side outer panel and on the vehicle interior side. ), A second pillar extending in the vertical direction (for example, the quarter pillar 4 in the embodiment), the first pillar, and the second pillar extending at a predetermined distance in front of the vehicle from the first pillar. The wheel house (for example, the wheel house in the embodiment) is arranged between the second pillar and joined to each other. 5) a wheel house inner (for example, the wheel house inner 51 in the embodiment) and a wheel house outer (for example, the wheel house outer 56 in the embodiment) constituting the vehicle body rear structure (for example, the vehicle body rear portion in the embodiment) The structure 1A) extends in the front-rear direction at a position corresponding to the fuel supply unit in the front-rear direction of the vehicle, and a rear end (for example, the rear end 22 in the embodiment) is the first A bracket (for example, the bracket 20 in the embodiment) is joined to the pillar, and a front end portion (for example, the front end portion 24 in the embodiment) is joined to the second pillar, and the bracket faces in the width direction of the vehicle. A plate-like general surface portion (for example, the general surface portion 21 in the embodiment), and the general surface portion is the foil how It is characterized by being disposed between the inner and the wheel house outer.

According to the present invention, since the rear end portion is joined to the first pillar and the front end portion is joined to the second pillar, the bracket has the first pillar and the first pillar at the position corresponding to the fuel supply portion in the front-rear direction. The bracket can be arranged at a desired position in the vertical direction between the two pillars. Therefore, as compared with the case where the bracket is arranged in the cross section of the damper stiffener as in the prior art, the degree of freedom of the bracket layout can be ensured. Thereby, for example, the fuel supply unit can be easily routed regardless of the position of the fuel tank.
In addition, since the bracket has a plate-shaped general surface portion facing the width direction of the vehicle, even if the bracket is disposed at a position corresponding to the fuel supply portion in the front-rear direction, the bracket is in the width direction of the vehicle. Can be prevented from being spread out. Therefore, the bracket can be arranged without sacrificing the space in the vehicle compartment even above the fuel supply portion that is generally narrow in the width direction of the vehicle.
Further, since the general surface portion of the bracket is disposed between the wheel house inner and the wheel house outer, the three members of the bracket general surface portion, the wheel house inner and the wheel house outer are laminated. Thereby, the intensity | strength and rigidity of the general surface part periphery of a bracket can be improved.
As described above, according to the present invention, it is possible to provide a vehicle body rear structure that can increase the strength and rigidity of the bracket while securing the space in the vehicle interior, and can secure the flexibility of the bracket layout.

  Further, in the invention according to claim 2, an opening (for example, the opening 15a in the embodiment) of the fuel supply unit is disposed at a top portion (for example, the top portion 51a and the top portion 56a in the embodiment) of the wheel house, and the foil The house inner includes an inner flange portion (for example, the inner flange portion 54 in the embodiment) that projects upward from the top portion, and the wheel house outer includes an outer flange portion (for example, in the embodiment) that projects upward from the top portion. An outer flange portion 59), and the general surface portion of the bracket is disposed between the inner flange portion and the outer flange portion, and the general surface portion of the bracket, the inner flange portion, and the outer flange portion. And a first joint (for example, the first joint P1 in the embodiment) to be joined It is characterized in that.

  According to the present invention, the general surface portion of the bracket is disposed between the inner flange portion of the wheel house inner and the outer flange portion of the wheel house outer, and the general surface portion of the bracket, the inner flange portion, and the outer flange portion are joined. Since the first joint portion is provided, the first joint portion is formed in a state where the three members are laminated. Therefore, the strength and rigidity of the bracket can be greatly increased.

  According to a third aspect of the present invention, the first pillar includes a first pillar flange facing the width direction (for example, the rear pillar flange 33 in the embodiment), and the inner flange portion and the outer flange portion are provided. Either one is provided with a notch (for example, the notch 55 in the embodiment) at a position corresponding to the first pillar flange, and the exposed portion of the bracket (for example, the exposure in the embodiment) exposed from the notch. Part 27), the first pillar flange, and the second joint part formed by joining one of the inner flange part and the outer flange part (for example, the second joint part P2 in the embodiment) It is characterized by providing.

  According to the present invention, any one of the inner flange portion and the outer flange portion is provided with a notch portion, and the bracket exposed portion exposed from the notch portion, the first pillar flange, the inner flange portion, and the outer flange portion. Since the second joint portion is formed by joining the other, the three members of the bracket exposed portion, the first pillar flange, the inner flange portion and the outer flange portion are laminated. In this state, the second joint portion is formed. Therefore, the strength and rigidity of the bracket can be greatly increased.

  According to a fourth aspect of the present invention, the second pillar extends in the width direction from the side surface portion (for example, the side surface portion 42 in the embodiment) facing the width direction, and extends from the side surface portion in the width direction. A rear surface portion (for example, the rear surface portion 44 in the embodiment) facing in the front-rear direction, and the bracket includes a contact surface (for example, the contact surface 25 in the embodiment) that contacts the rear surface portion. It is a feature.

  According to the present invention, since the bracket has a contact surface that contacts the rear surface portion of the second pillar, when an impact is applied from the outside and a load is applied from the rear to the front, the load is applied. Can be transmitted to the second pillar. Therefore, it is possible to disperse a load caused by an external impact.

  According to a fifth aspect of the present invention, the second pillar includes a rear flange portion (for example, the rear flange portion 46 in the embodiment) extending from the rear surface portion to the rear of the vehicle, and the bracket includes the contact portion. An extension portion (for example, the extension portion 26 in the embodiment) extending toward the front of the vehicle from the contact surface along the side surface portion is provided, and the general surface portion of the bracket and the rear flange portion are joined. Three joint portions (for example, the third joint portion P3 in the embodiment), a fourth joint portion (for example, the fourth joint portion P4 in the embodiment) in which the extension portion and the side surface portion of the bracket are joined, It is characterized by having.

  According to the present invention, at the rear of the contact surface of the bracket, the general surface portion of the bracket and the rear flange portion of the second pillar are joined by the third joint portion, and at the front of the bracket contact surface, Since the extension portion and the side surface portion of the second pillar are joined by the fourth joint portion, the bracket can be firmly fixed to the second pillar on both sides in the front-rear direction across the contact surface of the bracket. As a result, when a load is applied from the rear to the front of the bracket, it is possible to suppress the front end portion of the bracket from moving in the width direction of the vehicle, so the abutment surface of the bracket is attached to the rear surface portion of the second pillar. It can be made to contact reliably. Therefore, the load due to the impact from the outside can be reliably transmitted to the second pillar and dispersed.

  The invention according to claim 6 is characterized in that the bracket includes a bead extending in the front-rear direction (for example, the bead 23 in the embodiment).

  According to the present invention, by providing the beads extending in the front-rear direction, a large section modulus of the bracket can be ensured, so that the strength and rigidity of the bracket can be improved. Thereby, even when a load due to an impact from the outside is applied to the bracket, it is possible to suppress bending deformation. Therefore, the load due to the impact from the outside can be reliably transmitted to the second pillar and dispersed.

  According to a seventh aspect of the present invention, the bracket includes a retractor mounting portion (for example, a retractor device 65 for fixing the retractor device (for example, the retractor device 65 in the embodiment)) of a seat belt (for example, the seat belt 66 in the embodiment). The retractor mounting portion 28) according to the embodiment is characterized in that it includes the retractor mounting portion 28).

  According to the present invention, since the bracket has the retractor mounting portion for fixing the retractor device of the seat belt, the retractor device can be attached to the bracket having high strength and rigidity. Therefore, the mounting strength and mounting rigidity of the retractor device can be improved.

According to the present invention, since the rear end portion is joined to the first pillar and the front end portion is joined to the second pillar, the bracket has the first pillar and the first pillar at the position corresponding to the fuel supply portion in the front-rear direction. The bracket can be arranged at a desired position in the vertical direction between the two pillars. Therefore, as compared with the case where the bracket is arranged in the cross section of the damper stiffener as in the prior art, the degree of freedom of the bracket layout can be ensured. Thereby, for example, the fuel supply unit can be easily routed regardless of the position of the fuel tank.
In addition, since the bracket has a plate-shaped general surface portion facing the width direction of the vehicle, even if the bracket is disposed at a position corresponding to the fuel supply portion in the front-rear direction, the bracket is in the width direction of the vehicle. Can be prevented from being spread out. Therefore, the bracket can be arranged without sacrificing the space in the vehicle compartment even above the fuel supply portion that is generally narrow in the width direction of the vehicle.
Further, since the general surface portion of the bracket is disposed between the wheel house inner and the wheel house outer, the three members of the bracket general surface portion, the wheel house inner and the wheel house outer are laminated. Thereby, the intensity | strength and rigidity of the general surface part periphery of a bracket can be improved.
As described above, according to the present invention, it is possible to provide a vehicle body rear structure that can increase the strength and rigidity of the bracket while securing the space in the vehicle interior, and can secure the flexibility of the bracket layout.

It is the side view which looked at the vehicle body rear part structure on the left side of the vehicle in the embodiment of the present invention from the outside of the vehicle. It is the side view which looked at the vehicle body rear part structure on the left side of the vehicle in the embodiment of the present invention from the vehicle interior side of the vehicle. FIG. 3 is an enlarged view of a region S in FIG. 2. It is sectional drawing along the AA line in FIG. It is a perspective view of the front-end part of a bracket. It is explanatory drawing of the joining state by welding of a vehicle body rear part structure. It is sectional drawing along the BB line in FIG. It is sectional drawing along CC line in FIG.

A vehicle body rear part structure according to an embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view of a left vehicle body rear structure 1 </ b> A of a vehicle 1 according to an embodiment of the present invention as viewed from the outside of the vehicle 1.
In the following description, the front-rear, up-down, left-right directions are the same as those of the vehicle 1 unless otherwise specified. That is, in the following description, the front-rear direction corresponds to the front-rear direction in the traveling direction of the vehicle 1, and the left-right direction is the left-right direction in the width direction of the vehicle 1 (hereinafter simply referred to as “width direction”) as viewed from the driver's seat. The vertical direction corresponds to the vertical direction in the direction of gravity. In each figure, the arrow T indicates the front of the vehicle 1, the arrow LB indicates the left side of the vehicle 1, and the arrow H indicates the upper side of the vehicle 1.

As shown in FIG. 1, the vehicle 1 in the embodiment of the present invention is a so-called wagon type. A fuel tank (not shown) of the vehicle 1 is mounted by a so-called center tank layout method, and is provided below a middle portion in the front-rear direction of the center floor panel 11.
The vehicle body rear structure 1A of the vehicle 1 includes a side outer panel 2, a rear pillar 3 (corresponding to “first pillar” in claims), a quarter pillar 4 (corresponding to “second pillar” in claims), and a wheel. House 5 is provided.

The side outer panel 2 is formed by, for example, pressing a plate member made of a metal material. The side outer panel 2 constitutes a design surface at the side of the vehicle body of the vehicle 1 and is formed so as to cover a vehicle body skeleton (not shown) provided on the left and right sides of the vehicle 1 from the outside in the left-right direction.
The vehicle body skeleton covered by the side outer panel 2 includes a roof side rail (not shown) arranged in the upper part of the vehicle 1 and extending in the front-rear direction, and a front pillar inner (extending downward from the front end of the roof side rail). (Not shown), a center pillar inner (not shown) extending downward from the center in the front-rear direction of the roof side rail, a rear pillar 3 extending downward from the rear end of the roof side rail, and a rear pillar 3 The quarter pillar 4 is also arranged forward.

FIG. 2 is a side view of the left vehicle body rear structure 1 </ b> A of the vehicle 1 according to the embodiment of the present invention as viewed from the vehicle interior side of the vehicle 1.
As shown in FIG. 2, the rear pillar 3 extends in the vertical direction of the vehicle 1 at the rear end of the side outer panel 2 and the vehicle interior side.
The rear pillar 3 includes a rear pillar inner 31 provided on the vehicle interior side, and a rear pillar outer 36 (see FIG. 1) provided on the vehicle exterior side. The rear pillar inner 31 and the rear pillar outer 36 are formed by, for example, pressing a plate member made of a metal material. The rear pillar 3 has a closed cross section by joining the rear pillar inner 31 and the rear pillar outer 36 to each other.

  The upper end of the rear pillar 3 is connected to a rear quarter panel 41 provided at the rear end of the roof side rail by, for example, welding. The lower end of the rear pillar 3 is curved toward the inner side in the width direction, and is connected to the rear panel 13 extending in the width direction at the lower end of the rear pillar 3 by, for example, welding.

FIG. 3 is an enlarged view of a region S (shown by an alternate long and short dash line in FIG. 2) in FIG. In FIG. 3, a wheel house inner 51, a seat belt 66, and a retractor device 65, which will be described later, are illustrated by a two-dot chain line.
As shown in FIG. 3, the rear pillar inner 31 of the rear pillar 3 includes a rear pillar flange 33 (corresponding to “first pillar flange” in the claims) facing in the width direction. The rear pillar flange 33 is formed in a plate shape that protrudes forward, and extends along the vertical direction. The width along the front-rear direction of the rear pillar flange 33 is, for example, about １ ／ of the width along the front-rear direction of the rear pillar 3.

  As shown in FIG. 2, the quarter pillar 4 is formed by, for example, pressing a plate member made of a metal material, and is moved up and down at a position spaced a predetermined distance forward of the vehicle 1 relative to the rear pillar 3. Extends in the direction. The separation distance between the quarter pillar 4 and the rear pillar 3 is such that an opening 15a and a fuel adapter 17 of a fuel filler pipe 15 (corresponding to “fuel supply unit” in the claims), which will be described later, are located between the quarter pillar 4 and the rear pillar 3. It is set so that it can be placed.

The quarter pillar 4 has a side surface 42 facing in the width direction, projects outward from the rear end of the side surface portion 42 in the width direction, and faces the rear of the vehicle 1 from the rear surface portion 44 facing in the front-rear direction. And a rear flange portion 46 that extends. The quarter pillar 4 is formed in a crank shape in a sectional view by a side surface portion 42, a rear surface portion 44 and a rear flange portion 46.
The upper end of the quarter pillar 4 is integrally formed and connected to a rear quarter panel 41 provided at the rear end of the roof side rail. Further, the lower end of the quarter pillar 4 is connected to a wheel house outer 56 described later by, for example, welding.

  The wheel house 5 is disposed between the quarter pillar 4 and the rear pillar 3 at the lower ends of the quarter pillar 4 and the rear pillar 3. The wheel house 5 includes a wheel house inner 51 provided on the vehicle interior side and a wheel house outer 56 provided on the vehicle exterior side.

  The wheel house inner 51 is formed by, for example, pressing a plate member made of a metal material, and has an arc shape in a side view that is curved so as to cover an upper side of a tire (not shown) from the vehicle interior side. The main body portion 52 and a storage portion 53 that is continuously formed so as to bulge upward from the main body portion 52 and can store an upper end portion of the fuel filler pipe 15 described later can be provided therein.

The wheel house inner 51 includes an inner flange portion 54. The inner flange portion 54 faces in the width direction, and is formed in a plate shape projecting outward from the periphery of the wheel house inner 51 including the top 51 a of the wheel house inner 51.
Of the inner flange portion 54, a portion corresponding to the rear pillar flange 33 that is an upper rear corner portion is a cutout portion 55 that is notched so as not to overlap the rear pillar flange 33 in the width direction. By providing the notch portion 55, the upper rear portion of the inner flange portion 54 is formed in an R shape.

As shown in FIG. 1, the wheel house outer 56 is formed by, for example, pressing a plate member made of a metal material, and is curved so as to cover an upper portion of a tire (not shown) from the outside. An arcuate body portion 57 in a side view and a storage portion 58 that is continuously formed so as to bulge upward from the body portion 57 and in which the upper end portion of the fuel filler pipe 15 can be disposed. The storage portion 58 is provided with a through hole. The opening 15 a of the fuel filler pipe 15 faces the outside of the wheel house outer 56 through a through hole of the storage portion 58 and a through hole of the fuel adapter 17 described later.
The wheel house outer 56 includes an outer flange portion 59. The outer flange portion 59 faces in the width direction, and is formed in a plate shape projecting outward from the peripheral edge of the wheel house outer 56 including the top portion 56 a of the wheel house outer 56.

4 is a cross-sectional view taken along line AA in FIG.
As shown in FIG. 4, the wheel house 5 includes a rear pillar 3 and a quarter pillar 4 (see FIG. 3) between an inner flange portion 54 of the wheel house inner 51 and an outer flange portion 59 of the wheel house outer 56. In a state where brackets 20 and the like to be described later are interposed, they are joined to each other by, for example, spot welding. Details of the welding of the rear body structure 1A will be described later.
Between the storage portion 53 of the wheel house inner 51 and the storage portion 58 of the wheel house outer 56, an upper end portion of the fuel filler pipe 15 that is drawn from a fuel tank (not shown) of the vehicle 1 and extends upward is disposed. ing.

  A fuel adapter 17 is provided above the wheel house 5. The fuel adapter 17 is a box-shaped member with a bottom, and is formed by, for example, pressing or drawing a plate member made of a metal material. The bottom of the fuel adapter 17 is joined to the top 56a of the wheel house outer 56 and is disposed between the rear pillar 3 and the quarter pillar 4 (see FIG. 1).

  A through hole through which the upper end of the fuel filler pipe 15 is inserted is provided at the bottom of the fuel adapter 17. Inside the fuel adapter 17 and between the rear pillar 3 and the quarter pillar 4, an opening 15 a formed at the upper end portion of the fuel filler pipe 15 is disposed. An oil supply port 2 a is formed at a position corresponding to the fuel adapter 17 in the side outer panel 2. The fuel filler 2a can be opened and closed by a lid (not shown).

(bracket)
As shown in FIG. 3, a bracket 20 is provided at a position corresponding to the upper end portion of the fuel filler pipe 15 in the front-rear direction of the vehicle 1 and above the fuel filler pipe 15.
The bracket 20 is a long plate-like member extending in the front-rear direction of the vehicle 1, and is formed by, for example, pressing or the like on a plate member made of a metal material.

Most of the bracket 20 is a flat general surface portion 21 that is formed flat and faces the width direction of the vehicle 1.
A concave portion 29 is formed in the lower edge portion of the general surface portion 21 so as to be recessed upward in an intermediate portion in the front-rear direction. A bulge portion of the fuel adapter 17 is disposed in the recess 29.
A retractor mounting portion 28 is formed on the upper edge portion of the general surface portion 21 so as to protrude upward at an intermediate portion in the front-rear direction. The retractor device 65 is fastened and fixed to the retractor mounting portion 28 by, for example, a bolt or the like. The retractor device 65 is configured to be able to pull out and wind up the seat belt 66 and includes an ELR (Emergency Locking Retractor) mechanism that locks the seat belt 66 when an external impact is applied to the vehicle 1.

A bead 23 extending in the front-rear direction of the vehicle 1 is formed at the rear end portion 22 of the bracket 20. The bead 23 is an intermediate portion in the vertical direction at the rear end portion 22 of the bracket 20, and is formed to be recessed outward in the width direction in a region behind the recess 29. By providing the bead 23, a large section modulus of the bracket 20 is secured, and the strength and rigidity of the bracket are improved.
Further, a portion of the rear end portion 22 of the bracket 20 corresponding to the notched portion 55 of the inner flange portion 54 is exposed from the notched portion 55 to the vehicle interior side without being covered by the inner flange portion 54 when viewed from the vehicle interior side. It becomes the exposed part 27 to be.

FIG. 5 is a perspective view of the front end portion 24 of the bracket 20.
As shown in FIG. 5, the front end portion 24 of the bracket 20 is formed with a contact surface 25 that is formed along the rear surface portion 44 of the quarter pillar 4 and contacts the rear surface portion 44. The contact surface 25 is erected from the general surface portion 21 toward the vehicle interior side and faces in the front-rear direction.
Further, the bracket 20 includes an extension portion 26 that extends toward the front of the vehicle 1 along the side surface portion 42 of the quarter pillar 4 from the contact surface 25. The extension portion 26 is disposed on the side surface portion 42 of the quarter pillar 4. The front end portion 24 of the bracket 20 is formed in a crank shape in a sectional view by the general surface portion 21, the contact surface 25, and the extension portion 26.

Subsequently, the joining state by welding of the rear body structure 1A including the rear pillar 3, the quarter pillar 4, the wheel house inner 51, the wheel house outer 56, and the bracket 20 configured as described above will be described in detail with reference to the drawings. .
FIG. 6 is an explanatory diagram of a joining state by welding of the rear body structure 1A, and corresponds to FIG. In FIG. 6, the retractor device 65 and the seat belt 66 (both see FIG. 3) are not shown.
FIG. 7 is a cross-sectional view taken along line BB in FIG.
8 is a cross-sectional view taken along the line CC in FIG.
As shown in FIG. 6, the vehicle body rear structure 1A includes a first joint P1, a second joint P2, a third joint P3, a fourth joint P4, a fifth joint P5, and a sixth joint P6 (whichever Is also provided with a mark X in FIG. Each joining part P1-P6 is joined, for example by spot welding. Note that the number of spots in each of the joint portions P1 to P6 is not limited to the number of X marks illustrated in FIG. 6, and can be arbitrarily set.

FIG. 7 is a cross-sectional view taken along line BB in FIG.
As shown in FIG. 7, the first joint portion P1 is a state in which the general surface portion 21 of the bracket 20 is disposed between the inner flange portion 54 of the wheel house inner 51 and the outer flange portion 59 of the wheel house outer 56. The general surface portion 21 of the bracket 20, the inner flange portion 54, and the outer flange portion 59 are formed by being joined in a state of overlapping each other.
In the second joint portion P2, the exposed portion 27 of the bracket 20 exposed from the notch portion 55 of the inner flange portion 54, the rear pillar flange 33 of the rear pillar 3, and the outer flange portion 59 of the wheel house outer 56 overlap each other. It is formed by joining with.

8 is a cross-sectional view taken along the line CC in FIG.
As shown in FIG. 8, the third joint portion P3 is formed by joining the general surface portion 21 of the bracket 20 and the rear flange portion 46 of the quarter pillar 4 so as to overlap each other.
The fourth joint portion P4 is formed by joining the extension portion 26 of the bracket 20 and the side surface portion 42 of the quarter pillar 4 so as to overlap each other.
At this time, the front end portion 24 of the bracket 20 is joined to the quarter pillar 4 in a state where the contact surface 25 is in contact with the rear surface portion 44 of the quarter pillar 4.
6, the bracket 20 extends in the front-rear direction above the upper end of the fuel filler pipe 15, the rear end 22 is joined to the rear pillar 3, and the front end 24 is a quarter pillar. 4 is joined.

The fifth joint portion P5 is a rear pillar flange in a state where the rear pillar flange 33 of the rear pillar 3 is disposed between the inner flange portion 54 of the wheel house inner 51 and the outer flange portion 59 (see FIG. 1) of the wheel house outer 56. 33, the inner flange portion 54, and the outer flange portion 59 are joined together in a state of overlapping each other.
In the sixth joint P6, the rear flange portion 46 of the quarter pillar 4 is disposed between the inner flange portion 54 of the wheel house inner 51 and the outer flange portion 59 (see FIG. 1) of the wheel house outer 56. The rear pillar flange 33, the inner flange portion 54, and the outer flange portion 59 are formed by being joined in a state where they overlap each other.

According to the present embodiment, the bracket 20 has a rear end portion 22 joined to the rear pillar 3 and a front end portion 24 joined to the quarter pillar 4, so that the position corresponding to the upper end portion of the fuel filler pipe 15 in the front-rear direction. The bracket 20 can be arranged at a desired vertical position between the rear pillar 3 and the quarter pillar 4. Therefore, the freedom degree of the layout of the bracket 20 is securable compared with the case where a bracket is arrange | positioned in the cross section of a damper stiffener like a prior art. Thus, for example, the fuel filler pipe 15 can be easily routed regardless of the position of the fuel tank.
Further, since the bracket 20 includes a plate-like general surface portion 21 facing the width direction of the vehicle 1, the bracket 20 is disposed at a position corresponding to the upper end portion of the fuel filler pipe 15 in the front-rear direction. In addition, the bracket 20 can be prevented from being arranged so as to spread in the width direction of the vehicle 1. Therefore, the bracket 20 can be disposed without sacrificing the space in the vehicle interior even above the fuel filler pipe 15 that is generally narrow in the width direction of the vehicle 1.
Further, since the general surface portion 21 of the bracket 20 is disposed between the wheel house inner 51 and the wheel house outer 56, the three members of the general surface portion 21 of the bracket 20, the wheel house inner 51, and the wheel house outer 56 are laminated. Is done. Thereby, the intensity | strength and rigidity of the general surface part 21 periphery of the bracket 20 can be improved.
As described above, according to the present embodiment, it is possible to provide the vehicle body rear structure 1A that can increase the strength and rigidity of the bracket 20 while securing the space in the vehicle interior, and can secure the freedom of layout of the bracket 20.

  The general surface portion 21 of the bracket 20 is disposed between the inner flange portion 54 of the wheel house inner 51 and the outer flange portion 59 of the wheel house outer 56, and the general surface portion 21 of the bracket 20, the inner flange portion 54, and the outer Since the first joint portion P1 to which the flange portion 59 is joined is provided, the first joint portion P1 is formed in a state where the three members are laminated. Therefore, the strength and rigidity of the bracket 20 can be significantly increased.

  Further, the inner flange portion 54 is provided with a notch portion 55, and a second joint portion P2 formed by joining the exposed portion 27 of the bracket 20 exposed from the notch portion 55, the rear pillar flange 33, and the outer flange portion 59. Therefore, the second joint portion P2 is formed in a state where the three members of the exposed portion 27 of the bracket 20, the rear pillar flange 33, and the outer flange portion 59 are laminated. Therefore, the strength and rigidity of the bracket 20 can be significantly increased.

  Moreover, since the bracket 20 is provided with the contact surface 25 which contacts the rear surface portion 44 of the quarter pillar 4, when an impact is applied from the outside and a load is applied from the rear to the front, the load is applied. Can be transmitted to the quarter pillar 4. Therefore, it is possible to disperse a load caused by an external impact.

  Further, behind the abutment surface 25 of the bracket 20, the general surface portion 21 of the bracket 20 and the rear flange portion 46 of the quarter pillar 4 are joined by the third joint portion P <b> 3 and forward of the abutment surface 25 of the bracket 20. , The extension portion 26 of the bracket 20 and the side surface portion 42 of the quarter pillar 4 are joined by the fourth joint portion P4, and therefore, with respect to the quarter pillar 4 on both sides in the front-rear direction across the contact surface 25 of the bracket 20 Thus, the bracket 20 can be firmly fixed. Thereby, when a load is applied to the bracket 20 from the rear to the front, the front end 24 of the bracket 20 can be prevented from moving in the width direction of the vehicle 1, so that the bracket 44 is attached to the rear surface 44 of the quarter pillar 4. The 20 contact surfaces 25 can be reliably contacted. Therefore, the load due to the impact from the outside can be reliably transmitted to the quarter pillar 4 and dispersed.

  Further, by providing the beads 23 extending in the front-rear direction, a large section modulus of the bracket 20 can be secured, so that the strength and rigidity of the bracket 20 can be improved. Thereby, even when a load due to an impact from the outside is applied to the bracket 20, it is possible to suppress bending deformation. Therefore, the load due to the impact from the outside can be reliably transmitted to the quarter pillar 4 and dispersed.

  Moreover, since the bracket 20 has the retractor attachment part 28 for fixing the retractor device 65 of the seat belt 66, the retractor device 65 can be attached to the bracket 20 having high strength and rigidity. Therefore, the attachment strength and attachment rigidity of the retractor device 65 can be improved.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
The shape, material, manufacturing method, and the like of the members of the side outer panel 2, the rear pillar 3, the quarter pillar 4, the wheel house inner 51, the wheel house outer 56, and the bracket 20 that constitute the vehicle body rear structure 1A in the embodiment are not limited to the embodiment. .
Further, in the embodiment, the vehicle 1 of the so-called center tank layout system in which the fuel tank is provided below the middle portion in the front-rear direction of the center floor panel 11 has been described as an example. However, the application of the present invention is applied to the center tank layout. It is not limited to the vehicle 1 of a system.

  In the embodiment, the case where the bracket 20 is joined to the rear pillar 3 corresponding to the first pillar of the claims and the quarter pillar 4 corresponding to the second pillar of the claims has been described as an example. The pillars to be played are not limited to the rear pillar 3 and the quarter pillar 4. Therefore, depending on the vehicle type, the position of the fuel filler pipe 15 and the like, the bracket 20 may be joined to a pillar other than the rear pillar 3 and the quarter pillar 4.

  In the embodiment, the notch portion 55 is provided in the inner flange portion 54 of the wheel house inner 51, but a notch portion may be provided in the outer flange portion 59 of the wheel house outer 56. In this case, the exposed portion 27 of the bracket 20 exposed from the cutout portion of the outer flange portion 59, the rear pillar flange 33 of the rear pillar 3, and the inner flange portion 54 of the wheel house inner 51 are overlapped with each other. By joining, the second joint P2 is formed.

  In addition, it is possible to appropriately replace the components in the above-described embodiments with known components without departing from the spirit of the present invention.

1 Vehicle 1A Rear Body Structure 2 Side Outer Panel 3 Rear Pillar (First Pillar)
4 Quarter pillar (second pillar)
5 Wheelhouse 15 Fuel filler pipe (fuel supply part)
15a Opening 20 Bracket 21 General surface portion 22 Rear end portion 23 Bead 24 Front end portion 25 Contact surface 26 Extension portion 27 Exposed portion 28 Retractor mounting portion 33 Rear pillar flange (first pillar flange)
42 Side surface portion 44 Rear surface portion 46 Rear flange portion 51 Wheel house inner 51a Top portion 55 Notch portion 56 Wheel house outer 56a Top portion 65 Retractor device 66 Seat belt P1 First joint portion P2 Second joint portion P3 Third joint portion P4 Fourth joint Part

Claims (7)

A side outer panel that constitutes a design surface in a vehicle body side portion of the vehicle and includes a fuel supply unit;
A first pillar extending in a vertical direction of the vehicle at a rear end and a vehicle interior side of the side outer panel;
A second pillar extending in the vertical direction at a position spaced a predetermined distance forward of the vehicle from the first pillar;
A wheel house inner and a wheel house outer which are arranged between the first pillar and the second pillar and which are joined together to form a wheel house;
A vehicle body rear structure comprising:
A bracket extending in the front-rear direction at a position corresponding to the fuel supply part in the front-rear direction of the vehicle, having a rear end joined to the first pillar, and a front end joined to the second pillar. Prepared,
The bracket includes a plate-shaped general surface portion facing in the width direction of the vehicle,
The vehicle body rear structure, wherein the general surface portion is disposed between the wheel house inner and the wheel house outer. The vehicle body rear structure according to claim 1,
An opening of the fuel supply unit is arranged at the top of the wheel house,
The wheel house inner includes an inner flange portion projecting upward from the top portion,
The wheel house outer includes an outer flange portion projecting upward from the top portion,
The general surface portion of the bracket is disposed between the inner flange portion and the outer flange portion,
A vehicle body rear structure, comprising: a first joint portion to which the general surface portion of the bracket, the inner flange portion, and the outer flange portion are joined. The vehicle body rear structure according to claim 2,
The first pillar includes a first pillar flange facing the width direction,
One of the inner flange part and the outer flange part is provided with a notch at a position corresponding to the first pillar flange,
It comprises a second joint part formed by joining the exposed part of the bracket exposed from the notch part, the first pillar flange, and the other of the inner flange part and the outer flange part. Car body rear structure. The vehicle body rear structure according to any one of claims 1 to 3,
The second pillar is
A side portion facing in the width direction;
A rear surface portion that projects in the width direction from the side surface portion and faces in the front-rear direction;
With
The bracket rear structure includes a contact surface that contacts the rear surface portion. The vehicle body rear structure according to claim 4,
The second pillar includes a rear flange portion extending from the rear surface portion to the rear of the vehicle,
The bracket includes an extension extending from the contact surface toward the front of the vehicle along the side surface portion,
A third joint part where the general surface part of the bracket and the rear flange part are joined, and a fourth joint part where the extension part and the side part of the bracket are joined are provided. Car body rear structure. The vehicle body rear structure according to any one of claims 1 to 5,
The vehicle body rear structure, wherein the bracket includes a bead extending in the front-rear direction. The vehicle body rear structure according to any one of claims 1 to 6,
The bracket has a retractor mounting portion for fixing a retractor device for a seat belt.

Images