JP6876270B2 - Rear body structure of the vehicle - Google Patents

Description

The present invention relates to a notchback type vehicle having a trunk room at the rear of the vehicle body, and relates to a rear body structure of the vehicle in which both left and right ends of a partition portion separating the vehicle interior and the trunk room are connected and fixed to the side wall of the vehicle interior.

Conventionally, in a so-called notchback type vehicle having a trunk room at the rear of the vehicle body, a partition portion for partitioning the vehicle interior and the trunk room is provided.
As a vehicle of this type, for example, a vehicle having a vehicle body structure shown in Patent Document 1 is known.
In the vehicle of Patent Document 1, a rear package tray to which a speaker or the like is attached is provided behind the rear seat between substantially intermediate heights of the left and right side walls at the rear of the vehicle body. The rear package tray is provided with a cross member extending in the vehicle width direction along the front edge portion in order to improve the rigidity. On both sides of the rear package tray and the cross member, connecting members for connecting the side panels forming the side wall of the vehicle body are provided.

Japanese Unexamined Patent Publication No. 2009-23367

In the technique described in Patent Document 1 above, since the connecting member that connects the rear package tray and both side portions of the cross member is not provided with a closed cross section along the front-rear direction of the vehicle body, the rigidity against twisting of the vehicle body is increased. I couldn't secure it.

An object of the present invention is to provide a rear vehicle body structure of a vehicle capable of improving the rigidity of the trunk hinge mounting portion, improving the quality when opening and closing the trunk lid, and improving the vehicle body rigidity against twisting.

In order to solve the above problems, the present invention comprises a vehicle having a trunk room at the rear of the vehicle body, a partition portion for partitioning the vehicle interior and the trunk room, a vehicle interior side wall portion to which the end portion of the partition portion is connected and fixed, and a vehicle interior side wall portion. In the rear body structure of the vehicle in which a closed cross-sectional structure is formed at the end portion along the front-rear direction of the vehicle, the vehicle interior side wall portion is a rear pillar inner extending upward from the shock absorber mounting portion of the wheel house. It has a reinforcement, and the rear pillar inner reinforcement constitutes a part of the closed cross-sectional structure .

According to the present invention, by providing a closed cross-sectional structure at the joint portion between the partition portion and the side wall portion of the vehicle interior, the rigidity of the joint portion can be improved and the torsional rigidity of the vehicle body can be improved.

It is a perspective view which shows by removing the roof part in the rear body structure of the vehicle by embodiment of this invention. It is a perspective view which shows the X part of FIG. 1 enlarged. It is a top view which shows the trunk hinge part of FIG. FIG. 3 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is a cross-sectional view taken along the line BB of FIG. Is a front view showing the inner structure of the quarter pillar portion of the vehicle body right side. It is a perspective view which looked at the trunk hinge from the lower side of the vehicle body.

Hereinafter, the present invention is a notchback type vehicle having a trunk room at the rear of the vehicle body, and is applied to the rear vehicle body of the vehicle in which the left and right ends of the partition portion that separates the vehicle interior and the trunk room are connected and fixed to the side wall portion of the vehicle interior. The embodiment of the above will be described in detail with reference to FIGS. 1 to 7.
FIG. 1 is a perspective view showing the rear portion of the vehicle body on the right side to which the trunk hinge is attached, with the roof panel and the like removed, and FIG. 2 is an enlarged view of the X portion thereof.
Reference numeral 1 denotes a side body panel constituting the right side of the vehicle body, which is provided with door openings 1a and 1b for attaching front doors and rear doors (not shown). On the rear side of the door opening 1b to which the rear door is attached, a quarter pillar inner panel 2 is provided above and a wheel house 3 is provided below. Seatbelt reinforcements 4 and rear pillar inner reinforcements 5 are provided above and below the interior side of the quarter pillar inner panel 2, which serves as a side wall of the vehicle interior.

The side body panel 1 constitutes a cabin 6 serving as a vehicle interior together with a left side body panel (not shown), and a trunk room 7 serving as a luggage compartment is provided behind the cabin 6. The trunk room 7 is separated from the cabin 6 by a partition portion 8 provided in the vehicle width direction, and the upper surface of the trunk room 7 is separated from the outside by an openable and closable trunk lid 9.

The partition portion 8 is composed of a partition front wall portion 8 ₁ , a partition upper _{wall portion 8 2,} and a partition side wall portion 8 ₃ . The partition front wall _81, as shown in FIGS. 2 and 7, a strip of the partition front member 10 extending in the vehicle width direction, is provided in front of the partition front member 10, the front wall portion in the vehicle longitudinal direction It is formed by bending from 11a to the upper surface portion 11b, and is composed of a partition front panel 11 extending in the vehicle width direction. The partition front member 10 is joined to the back surface side of the front wall portion 11a of the partition front panel 11 with a gap (not shown) provided in the vehicle width direction to form a closed cross-sectional structure in the vehicle width direction.
Partition the upper wall portion ₈₂ includes a partition panel 12 joined to the rear side of the partition front panel 11, and a partition rear member 13 which is joined to the rear side of the partition panel 12. At the rear end of the partition panel 12, a gap (not shown) is formed between the partition panel 12 and the partition rear member 13, and a closed cross-sectional structure is formed in the vehicle width direction.

On the other hand, the partition side wall portion 8 ₃ is a portion of the partition front wall portion 8 ₁ and the partition upper _{wall portion 8 2} around both ends in the vehicle width direction, and is provided so as to straddle the two. It is composed of a partition side front panel 14 and a partition side rear panel 15. Partition lateral wall 8 ₃ of the upper surface, the partition side rear panel 15, the hinge bracket 17 of the dog leg type of trunk hinges 16 for opening and closing the trunk lid 9 is provided. The partition side rear panel 15 is provided with an opening 15a for a hinge bracket on the upper surface thereof. As shown in FIGS. 3 and 4, the mounting flange portions 17a on both the left and right sides of the hinge bracket 17 are passed through the hinge bracket opening 15a, and the mounting flange portions 17a are overlapped on the back surface side of the partition side rear panel 15. It is screwed through a mounting hole (not shown) via a bolt 18 and a nut 18a. The bolts 18 and nuts 18a are provided and fixed at two locations on the mounting flange portion 17a on the inside of the vehicle body and at one location on the mounting flange portion 17a on the outside of the vehicle body. One end of the dogleg type trunk hinge 16 is pivotally supported by the hinge bracket 17, and the other end is fixed to the back surface side of the trunk lid 9.

As shown in FIG. 4, the partition side rear panel 15 is formed with a stepped portion 15b facing downward on the side wall side in the vehicle width direction, and the tip of the stepped portion 15b is extended downward to obtain the vehicle width. The tip portion 15c in the direction is joined to the quarter pillar inner panel 2 and the rear pillar inner reinforcement 5. A panel-shaped reinforcing member 19 is arranged on the upper side of the stepped portion 15b of the partition side rear panel 15, and the partition side rear panel 15, the reinforcing member 19, and the rear pillar inner force 5 are used in front of and behind the side wall portion of the vehicle interior. A closed cross section S having a constant length is formed along the direction.

Said closed cross-section S is de Partition front wall portion ₈₁ as shown in FIGS. 5 and 7, the partition side front panel 14, and partitions the side front member 14a, the rear pillar inner reinforcement 5 and (cabin side wall portion) A first closed cross section (front closed cross section) S ₁ is formed. Then close section S is the upper wall portion _82, and the reinforcing member 19, and the partition side rear panel 15, a second closed cross section (side closed cross section) at the 5 rear pillar inner reinforcement (vehicle interior side wall portion) S ₂ is formed. Closed cross section S is the upper wall _82, and partition the rear member 13, and the partition side rear panel 15, a quarter pillar or the like (vehicle interior side wall portion) and the de third closed section S ₃ is formed. The second closed cross section S ₂ and the third closed cross section (rear closed cross section) S ₃ are connected in the embodiment of FIG. 5, but can be completely separated by providing a partition wall.

In the above embodiment, the vehicle is a notchback type vehicle having a trunk room 7 at the rear of the vehicle body, and the left and right ends of the partition portion 8 that separates the cabin 6 and the trunk room 7 which are the vehicle interiors are connected and fixed to the side walls of the vehicle interior. It is applied to the rear body structure of the vehicle. Since the closed cross-sectional structure S is provided at both ends of the partition portion 8 along the front-rear direction of the vehicle, the rigidity of the joint portion can be improved and the torsional rigidity of the vehicle body can be improved.

Further, the upper wall portion 8 ₂ of the partition portion 8 is provided with a trunk hinge mounting portion which is a mounting portion of the hinge bracket 17, and a hinge bracket is provided at the end portion of the partition portion 8 on the quarter pillar inner panel 2 side. A stepped portion 15b that is lowered downward with respect to the mounting surface of 17 is provided. A reinforcing member 19 is provided on the stepped portion 15b toward the quarter pillar inner panel (side wall portion) 2, and a closed cross section S along the front-rear direction of the vehicle body is provided between the stepped portion 15b and the stepped portion 15b of the partition portion 8. The structure is provided. In this way, by having the step portion 15b below the mounting surface of the hinge bracket 17, it becomes easy to support deformation such as hanging of the end portion of the partition portion 8 due to the downward load due to the mounting of the trunk lid 9, and the assembly quality is improved. become. Further, by adding the reinforcing member 19, the joint points of the partition side rear panel 15, the quarter pillar inner panel 2 and the rear pillar inner reinforcement 5 are closed, and a plurality of joint points are arranged apart from each other in the vertical direction with the cross-sectional portion S interposed therebetween. It is possible to prevent stress concentration at the joint point by input in the vertical direction of the vehicle due to deformation due to twisting of the vehicle body, and it is possible to increase the joint strength. Further, by closing the end portion of the partition portion 8 and reinforcing it with a cross-sectional structure, it is possible to suppress the deformation of the joint portion and reduce the twisting itself of the vehicle body.

The trunk hinge mounting portion, which is the mounting portion of the hinge bracket 17, is provided adjacent to the closed cross-section S structure, and at least the fixed portion on the closed cross-section structure side of the trunk hinge mounting portion is the partition side rear panel of the partition portion 8. 15. It is fastened and fixed together with the reinforcing member 19. Therefore, since the rigidity of the trunk hinge mounting portion can be improved by the reinforcing member 19 and the closed cross-sectional structure, vibration of the trunk lid 9 due to running vibration or the like can be reduced. Since it is possible to suppress the sway and overstroke of the boot lid 9 when the boot lid 9 is opened and closed, it is possible to improve the parting off by reducing the gap between the boot lid 9 and the vehicle body, which leads to quality improvement. Since the mounting rigidity of the boot lid 9 is improved, it is possible to reduce the generation of abnormal noise caused by the vibration of the boot lid 9.

The vehicle interior side wall portion is configured to include a rear pillar inner force 5 extending upward from the shock absorber mounting portion of the wheel house 3, and is a partition side composed of a partition side front panel 14 and a partition side rear panel 15 of the partition portion 8. A front portion of a side-closed cross-section S structure composed of a panel and the reinforcing member 19 is continuously provided on the rear pillar inner force 5. Therefore, by continuously high structural rigidity from the shock absorber mounting portion of the suspension of the wheel house 3, for the input from the travel time of the suspension it is possible to increase the rigidity of the vehicle body, it can be difficult to deform the body it can.

The vehicle interior side wall portion includes a quarter pillar inner panel 2, a rear pillar inner reinforcement 5, and a rear seat belt reinforcement 4, and the rear pillar inner reinforcement 5 and the rear seat belt reinforcement 4 are fastened together with the reinforcing member 19. It is fixed. Therefore, the strength of the joint can be improved and deformation can be further suppressed. By releasing the stress generated at the joint through the quarter pillar inner panel 2 to the side body 1, it is possible to prevent the stress from concentrating on the joint.

The present invention is not limited to the above embodiment. For example, the reinforcing member 19 and the partition side rear panel 15 form a closed cross section S of the partition portion 8, but the reinforcing member 19 shape by using those in the vehicle body direction of the long, it is possible to reinforce the entire partition lateral wall 8 ₃ by the reinforcing member. Further, by covering the entire trunk hinge mounting portion with the reinforcing member 19, the rigidity can be further improved. It goes without saying that the technical scope of the present invention can be appropriately modified and implemented without modification.

1 Side body panel 2 Quarter pillar inner panel 3 Wheel house 4 Seatbelt reinforcement 5 Rear pillar inner reinforcement 6 Cabin 7 Trunk room 8 Partition part 8 ₁ Partition front wall part 8 ₂ Partition upper _{wall part 8 3} Partition side wall part 9 Trunk lid 10 Partition front member 11 Partition front panel 12 Partition panel 13 Partition rear member 14 Partition side front panel
14a Partition side front member 15 Partition side rear panel 15a Hinge bracket opening 15b Step 15c Tip 16 Trunk hinge 17 Hinge bracket 17a Mounting flange 18 Bolt 18a Nut 19 Reinforcing member S Closed section S ₁ First closed section (front) Part closed cross section)
S ₂ Second closed cross section (side closed cross section)
S ₃ Third closed cross section (rear closed cross section)

Claims (5)

A vehicle that has a trunk room at the rear of the vehicle.
The partition that separates the passenger compartment from the trunk room ,
The vehicle interior side wall portion to which the end portion of the partition portion is connected and fixed is provided.
In the rear body structure of a vehicle in which a closed cross-sectional structure is formed at the end portion along the front-rear direction of the vehicle.
The vehicle interior side wall portion has a rear pillar inner force that extends upward from the shock absorber mounting portion of the wheel house.
A rear body structure of a vehicle, wherein the rear pillar inner force forms a part of the closed cross-sectional structure. The partition part is
An upper wall portion of the trunk hinge attachment portion Ru provided,
It has a stepped portion provided on the side wall portion of the vehicle interior of the upper wall portion and lowered to the lower side with respect to the mounting surface of the trunk hinge mounting portion.
Rear vehicle body structure according to claim 1, characterized in that it comprises a reinforcing member connected to the passenger compartment side wall portion extending in the vehicle compartment side wall portion along the mounting surface on the step portion. The partition part is
It has a lateral wall portion that is joined so as to straddle the upper wall portion and extends rearward from the mounting surface.
The rear portion of the vehicle according to claim 2, wherein a closed cross-sectional structure on the rear side is formed by the lateral wall portion, the reinforcing member, and the rear pillar inner line force, which is located behind the closed cross-section structure. Body structure. The partition part is
It has a lateral wall portion that is joined so as to straddle the upper wall portion.
The rear vehicle body of the vehicle according to claim 2 or 3, wherein the upper wall portion extends downward from the lower closed cross-section structure formed below the closed cross-section structure and is connected to the rear pillar inner ring force. Construction. A vehicle that has a trunk room at the rear of the vehicle.
The partition that separates the passenger compartment from the trunk room,
The vehicle interior side wall portion to which the end portion of the partition portion is connected and fixed is provided.
A closed cross-sectional structure is formed at the end along the front-rear direction of the vehicle.
The side wall of the vehicle interior includes a rear seat belt reinforcement.
Rear vehicle body structure of a vehicle, characterized in that said rear seat belt reinforcement and reinforcement member are co-fastened.

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