JP-2026076015-A - Vehicle rear structure

JP2026076015AJP 2026076015 AJP2026076015 AJP 2026076015AJP-2026076015-A

Abstract

[Problem] To obtain a rear vehicle structure that can rectify the airflow within the rear wheel wells and enable communication between the interior and exterior of the vehicle, while suppressing the intrusion of noise into the interior of the vehicle. [Solution] At the rear of the vehicle 10A, the air duct 32 is positioned so as to overlap with the vent duct 24 when viewed from the vehicle width direction, and at the duct mounting portion 22A of the quarter panel 16, the gap between the air duct 32 and the quarter panel 16 is larger at the rear of the vehicle than at the front of the vehicle. [Selection Diagram] Figure 2

Inventors

岡野昌之
壁谷慎二

Assignees

トヨタ自動車株式会社

Dates

Publication Date: 20260511
Application Date: 20241023

Claims (18)

A body panel formed on the rear side of the rear wheel arch, which constitutes a part of the outer width direction of the rear of the vehicle body, and has an opening into which a vent duct is attached that connects the interior and exterior of the vehicle, An air duct is located on the inside in the vehicle width direction of a design panel that connects the rear wheel house side and the rear side of the vehicle and forms part of the design surface of the side of the vehicle, Equipped with, The air duct is positioned such that it overlaps with the vent duct in at least a portion when viewed from the vehicle width direction, and the gap between the air duct and the vehicle body panel at the duct mounting portion provided along the periphery of the opening in the vehicle body panel is larger on the rear side of the vehicle than on the front side. Rear structure of the vehicle.
The vent duct is located on the front side of the vehicle and further comprises a front sound insulation section erected from the air duct toward the inward direction in the vehicle width direction, The vehicle rear structure according to claim 1.
The dimensions of the front sound insulation section in the vehicle's vertical direction are larger than the dimensions of the vent duct in the vehicle's vertical direction. The vehicle rear structure according to claim 2.
The aforementioned front sound-insulating section is integrally molded with the air duct. The vehicle rear structure according to claim 2.
The aforementioned front sound-insulating section is composed of a pair of wall sections spaced apart in the thickness direction. The vehicle rear structure according to claim 2.
The aforementioned front sound-insulating section is positioned in the vehicle width direction at a distance from the vehicle body panel that is narrower than the distance between the wall sections. The vehicle rear structure according to claim 5.
The vent duct includes a front protruding wall portion that protrudes outward in the vehicle width direction and extends in the vehicle vertical direction at the front side of the opening of the vehicle, The aforementioned front protruding wall portion is positioned so as to overlap with the aforementioned front sound insulation portion when viewed from the front-rear direction of the vehicle. The vehicle rear structure according to claim 2.
The vent duct is further provided with a front sound-insulating member located on the front side of the vehicle and erected outward from the vehicle body panel in the vehicle width direction, The vehicle rear structure according to claim 1.
The aforementioned front sound-insulating member is made up of urethane. The vehicle rear structure according to claim 8.
A body panel formed on the rear side of the rear wheel arch, which constitutes a part of the outer width direction of the rear of the vehicle body, and has an opening into which a vent duct that connects the interior and exterior of the vehicle is attached, An air duct is located on the inside in the vehicle width direction of a design panel that connects the rear wheel house side and the rear side of the vehicle and forms part of the design surface of the side of the vehicle, Equipped with, The air duct is positioned such that it overlaps with the vent duct in at least a portion when viewed from the vehicle width direction, and the gap between the air duct and the vehicle body panel at the duct mounting portion provided along the periphery of the opening in the vehicle body panel is larger on the upper side of the vehicle than on the lower side. Rear structure of the vehicle.
The vent duct is located on the underside of the vehicle and further comprises a lower sound-insulating section erected from the air duct toward the inward direction in the vehicle width direction, The vehicle rear structure according to claim 10.
The dimensions of the lower sound insulation section in the vehicle's longitudinal direction are larger than the dimensions of the vent duct in the vehicle's longitudinal direction. The vehicle rear structure according to claim 11.
The lower sound-insulating section is integrally molded with the air duct. The vehicle rear structure according to claim 11.
The lower sound-insulating section is composed of a pair of wall sections spaced apart in the thickness direction. The vehicle rear structure according to claim 11.
The lower sound-insulating section is positioned in the vehicle width direction at a distance from the vehicle body panel that is narrower than the distance between the wall sections. The vehicle rear structure according to claim 14.
The vent duct includes a lower protruding wall portion that protrudes outward in the vehicle width direction and extends in the vehicle longitudinal direction on the lower side of the opening of the vehicle, The aforementioned lower protruding wall portion is positioned so as to overlap with the aforementioned lower sound insulation portion when viewed from the vertical direction of the vehicle. The vehicle rear structure according to claim 11.
The vent duct is further provided with a lower sound-insulating member located on the underside of the vehicle and erected outward from the vehicle body panel in the vehicle width direction, The vehicle rear structure according to claim 10.
The aforementioned lower sound-insulating member is made up of urethane. The vehicle rear structure according to claim 17.

Description

This invention relates to a vehicle rear structure. Patent Document 1 below discloses an invention relating to a vehicle rear structure. In this vehicle rear structure, a rear outlet duct is provided inside the rear bumper cover and on the rear side of the rear wheel well, discharging air from within the rear wheel well towards the rear of the vehicle behind the rear bumper cover. Furthermore, an opening is formed in the inner side wall of the rear outlet duct in the vehicle width direction, and a vent duct is integrally provided on the side wall surrounding this opening. In this vehicle rear structure, air from the passenger compartment flows from the passage of the vent duct through the opening into the rear outlet duct, and is then discharged outside the vehicle through the rear outlet duct. Japanese Patent Publication No. 2013-71462 This is a schematic side view showing the configuration of the rear of a vehicle to which the vehicle rear structure according to this embodiment is applied.This is a schematic cross-sectional view showing the configuration of the rear of a vehicle to which the vehicle rear structure according to this embodiment is applied (a cross-sectional view showing the state when cut along line 2-2 in Figure 1).This is a perspective view from the front of the vehicle showing the configuration of the rear of the vehicle to which the vehicle rear structure according to this embodiment is applied.This is a rear view showing the configuration of the rear of a vehicle to which the vehicle rear structure according to this embodiment is applied.This is a schematic cross-sectional view showing the configuration of the rear of a vehicle to which the vehicle rear structure according to this embodiment is applied (a cross-sectional view showing the state when cut along line 5-5 in Figure 1).This is a schematic cross-sectional view showing the configuration of the rear of a vehicle to which the vehicle rear structure according to this embodiment is applied (a cross-sectional view showing the state when cut along line 6-6 in Figure 1).This is a schematic side view, seen from the inside in the vehicle width direction, showing the configuration of the air duct that constitutes the main part of the vehicle rear structure according to this embodiment.This is a schematic front view, seen from the front of the vehicle, showing the configuration of the air duct, which constitutes the main part of the rear structure of the vehicle according to this embodiment.This is a schematic rear view, seen from the rear of the vehicle, showing the configuration of the air duct, which constitutes the main part of the vehicle's rear structure according to this embodiment.This graph compares the noise reduction effect of the sound-insulating section provided in the air duct, which constitutes the main part of the vehicle rear structure according to this embodiment, with a theoretical model when this sound-insulating section is considered as an extended-type silencer.This is a schematic cross-sectional view (corresponding to Figure 5) showing the configuration of the rear of a vehicle to which the modified rear structure of this embodiment is applied. The following describes an example of an embodiment of the vehicle rear structure according to the present invention, using Figures 1 to 10. In each figure, arrows FR indicate the front of the vehicle, UP indicates the upper side of the vehicle, and LH indicates the left side in the vehicle width direction. First, using Figures 1 and 2, the schematic configuration of the rear section 10A of a vehicle 10 to which the vehicle rear structure according to this embodiment is applied will be described. In this embodiment, since the vehicle 10 is basically symmetrical, the following description will mainly focus on the configuration of the left side in the vehicle width direction of the vehicle 10, and the configuration of the right side in the vehicle width direction will be omitted as appropriate. The rear section 10A of the vehicle comprises the rear body section 12A, which constitutes the rear portion of the vehicle body 12, and a bumper cover 14, which serves as a decorative panel covering the rear body section 12A. The rear section 12A of the vehicle body includes a quarter panel 16, which is a body panel forming a portion of the outer side in the vehicle width direction, and a rear wheel house 20, which houses the rear tire 18 and forms the front portion of the quarter panel 16 in the rear section 12A of the vehicle body. A wheel house liner 21 is attached to the rear wheel house 20 on the side facing the rear tire 18. More specifically, the quarter panel 16 is made of steel plate and is positioned with its thickness oriented in the direction of the vehicle width. This quarter panel 16 has a rectangular opening 22 when viewed from the vehicle width direction. A vent duct 24 is attached to the opening 22. The vent duct 24 is composed of a main body portion 26 and a plurality