JP2010006314A - Ventilation structure of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation structure of an automobile capable of preventing lowering of a ventilation function in a cabin due to entering of travel wind. <P>SOLUTION: In this ventilation structure, a ventilation port 7a formed in a rear end lower part (lower back panel) 7 of a vehicle body 1 constituting the cabin A to discharge air in the cabin A to the outside of the vehicle and a rear bumper 11 disposed to cover the ventilation port 7a from a rear side in the rear end lower part 7 of the vehicle body 1 are provided. A shielding plate 12 to shield a clearance s between the rear end lower part 7 and the rear bumper 11 is provided at the vehicle width direction inside of the ventilation port 7a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle ventilation structure including a ventilation port formed at a lower rear end of a vehicle body, and a rear bumper disposed at the lower end of the rear end so as to cover the ventilation port from the rear.

In an automobile, the window glass may be prevented from fogging by ventilating the interior of the vehicle. For example, in Patent Document 1, vents are formed at both ends in the vehicle width direction of a tail end member arranged at the lower rear end of a vehicle body, and only the air flow from the room to the outside is provided to the left and right vents. A ventilating structure in which an allowable ventilator is disposed and a rear bumper is disposed on the tail end member so as to cover the left and right vent holes from the rear is adopted.
JP-A-2005-75082

  By the way, in the conventional ventilation structure, traveling wind flowing under the floor of the vehicle body during traveling may enter between the tail end member and the rear bumper to press and block the ventilator. As a result, the indoor ventilation function is deteriorated, and there is a problem that the window glass is easily fogged.

  The present invention has been made in view of the above-described conventional situation, and it is an object of the present invention to provide an automobile ventilation structure that can prevent the indoor ventilation function from being deteriorated due to the entry of traveling wind.

  The invention according to claim 1 is formed at a lower portion of the rear end of the vehicle body constituting the passenger compartment, and exhausts air in the passenger compartment to the outside of the vehicle, and covers the ventilation port at the lower rear end portion of the vehicle body from the rear. And a rear bumper disposed in the vehicle, wherein a shielding plate for shielding between the rear end lower portion and the rear bumper is provided inside the ventilation opening in the vehicle width direction. .

  According to a second aspect of the present invention, in the automobile ventilation structure according to the first aspect, the shielding plate is provided integrally with a fender liner that covers at least a rear portion of the rear wheel.

  According to the ventilation structure of the first aspect of the present invention, since the shielding plate that shields the rear end lower portion of the vehicle body and the rear bumper is provided on the inner side in the vehicle width direction of the ventilation opening, the traveling wind flowing under the floor of the vehicle body Even if the vehicle enters between the vehicle body and the rear bumper, the shielding plate is prevented from flowing into the ventilation opening, so that the indoor ventilation function can be secured and the window glass can be prevented from being fogged.

  In the invention of claim 2, since the shielding plate is provided integrally with the fender liner, the shielding plate can be assembled simultaneously with the assembly of the fender liner, and the assembly can be easily performed. Moreover, the increase in the number of parts by newly providing a shielding board can be prevented, and the increase in cost can be suppressed.

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

  1 to 4 are views for explaining a ventilation structure of an automobile according to an embodiment of the present invention. FIG. 1 is a perspective view of a rear vehicle body viewed from the rear of the vehicle, and FIG. 2 is a side view of the rear vehicle body. 3 is a rear view of the rear vehicle body, and FIG. 4 is an exploded perspective view of the fender liner and the rear bumper. In the description of the present embodiment, front and rear and left and right mean front and rear and left and right when viewed from the rear of the vehicle.

  In the figure, reference numeral 1 denotes a rear body of an automobile. The rear body 1 includes left and right quarter panels 2 and 2 forming a rear edge of a rear door opening 1a, and left and right quarter panels 2. The roof panel 3 that connects the upper ends and the rear floor panel 4 that connects the lower ends have a schematic structure in which the vehicle compartment A is formed.

  Rear fenders 6 and 6 are connected to the lower ends of the left and right quarter panels 2 so as to cover the rear wheels 5. Tail lamp mounting holes 2a and 2a are formed in the rear edge surfaces of the left and right quarter panels 2.

  Further, a lower back panel 7 extending in the vehicle width direction is connected to the lower part of the rear end of the left and right quarter panels 2. Thus, a back door opening 1 b surrounded by the left and right quarter panels 2, the roof panel 3, and the lower back panel 7 is formed on the rear end surface of the rear vehicle body 1. A back door 8 for opening and closing the back door opening 1b is disposed.

  Resin fender liners 10 and 10 are attached to the left and right rear fenders 6 so as to cover a rear portion of the rear wheel 5.

  A pair of upper and lower ventilation ports 7a are formed at the left and right ends of the lower back panel (lower rear end) 7 of the rear vehicle body 1, respectively. The ventilation port 7a discharges the air in the passenger compartment A to the outside of the vehicle, and is formed in a rectangular tube shape so as to protrude inside the vehicle.

  Reed valve type check valves (not shown) that allow only the flow of air from the passenger compartment A to the outside of the vehicle and prevent the backflow are disposed in the left and right ventilation openings 7a.

  A rear bumper 11 is disposed on the lower back panel 7 so as to cover the left and right ventilation openings 7a from the rear. The rear bumper 11 is disposed with a predetermined gap s between the rear bumper 11 and the lower back panel 7, and is attached to the lower back panel 7 and the quarter panel 2. Reference numeral 9 denotes a bumper mounting bracket connected to the lower back panel 7.

  The upper edge 11a of the rear bumper 11 is formed to coincide with the upper edge 7b of the lower back panel 7, that is, the lower edge of the back door opening 1b, and the lower edge 11b is positioned below the lower edge 7c of the lower back panel 7. It is formed to do. Thus, when viewed from the rear, the lower back panel 7 and the left and right fender liners 10 are hidden by the rear bumper 11, and the lower edge 11 b of the rear bumper 11 is positioned below the rear floor panel 4.

  In addition, left and right shielding plates 12 and 12 that shield the gap s between the lower back panel 7 and the rear bumper 11 are disposed on the inner side in the vehicle width direction of the left and right ventilation openings 7a. .

  The shielding plate 12 is integrally formed with the fender liner 10 so as to bend and extend rearward after the inner edge of the fender liner 10, and is located in the vicinity of the inside of the left and right ventilation openings 7a. Yes.

  Specifically, the left and right shielding plates 12 include a first shielding portion 12a extending rearward so as to contact the lower surface of the lower back panel 7, and a rear surface of the lower back panel 7 and the rear bumper 11 from the first shielding portion 12a. And a second shielding portion 12b extending upward to come into contact with the inner side surface of the second shielding portion 12b.

  According to the ventilation structure of the present embodiment, the shielding plate 12 that shields the gap s between the lower back panel 7 and the rear bumper 11 on the inner side in the vehicle width direction of the left and right ventilation openings 7a formed in the lower back panel 7. Therefore, even if a traveling wind a flowing rearward under the rear floor panel 4 of the rear vehicle body 1 enters the gap s between the lower back panel 7 and the rear bumper 11, the left and right shielding plates 12 are provided with ventilation openings. It will be prevented from flowing into 7a. As a result, the ventilation function in the passenger compartment A can be secured, and the window glass can be prevented from being fogged. In particular, in the present embodiment, since the rear bumper 11 protrudes downward from the rear floor panel 4 and the lower back panel 7, the traveling wind a is wound up by the rear bumper 11 and easily enters the gap s. This is effective for simple structures.

  In addition, since the traveling wind a can be prevented from flowing into the ventilation port 7a, it is possible to reliably prevent dust, rainwater, etc., rolled up together with the traveling wind a from entering the passenger compartment A from the ventilation port 7a.

  Furthermore, since the inflow amount of the traveling wind a into the gap s is reduced by the left and right shielding plates 12, the aerodynamic performance can be improved accordingly.

  In this embodiment, since the said shielding board 12 was integrally formed in the fender liner 10, the shielding board 12 can be assembled | attached simultaneously with the assembly | attachment of the fender liner 10, and an assembly | attachment can be performed easily. In this case, the rear bumper 11 is attached after the fender liner 10 and the shielding plate 12 are attached.

  Moreover, the increase in the number of parts by newly providing the said shielding board 12 can be prevented, and the raise of cost can be suppressed.

  5 (a) and 5 (b) are diagrams showing the results of an experiment performed to confirm the ventilation effect by the shielding plate of the present embodiment.

  This experiment was performed using the vehicle of this example in which a shielding plate was arranged inside each of the left and right ventilation openings and a comparative vehicle in which no shielding plate was arranged. Each vehicle was run at an atmospheric temperature of −5 degrees at a vehicle speed of 120 km / h, and the fogging conditions of the windshield 20, left and right front window glass 21, and left and right rear window glass 22 were examined. A small amount of air was supplied to the room by an electric fan.

  As a result, in the case of the comparative vehicle, some fogging (shaded portions in the figure) occurred on the upper edge portion of the windshield 20, and fogging spread forward and backward on the left and right front window glasses 21.

  On the other hand, in the case of the vehicle of this example, the windshield 20 was not fogged at all, and was slightly fogged at the rear upper ends of the left and right front window glasses 21. The left and right rear windowpanes were cloudy on both vehicles. Thus, it can be seen that the ventilation performance of this example vehicle is improved compared to the comparative vehicle.

  Moreover, when the pressure of the ventilation port of each vehicle was measured, it was +2.2 mmAg and a positive pressure in a comparative vehicle, and ventilation of room air is inadequate. On the other hand, in the case of the vehicle of the present embodiment, the negative pressure is -3.5 mmAg, and it can be seen that the indoor air is sufficiently ventilated.

  In the above-described embodiment, the case where the shielding plate 12 is formed integrally with the fender liner 10 has been described as an example. However, in the present invention, the shielding plate may be formed separately, and in this case, the fender liner is formed. , Lower back panel, or rear bumper.

  Various modifications can be considered for the shape of the shielding plate. For example, the shielding plate may be formed so as to surround the inside, top, and bottom of the ventilation port. In short, the lower back panel and the rear bumper inside the ventilation port Any shape can be adopted as long as it is a shape that shields the gap.

  Furthermore, although the case where the ventilation port was formed in the lower back panel was described in the above embodiment, the present invention may be formed in the left and right quarter panels.

1 is a perspective view of a rear vehicle body employing a ventilation structure according to an embodiment of the present invention. It is a side view of the said rear vehicle body. It is a rear view of the said rear vehicle body. FIG. 3 is an exploded perspective view of a fender liner and a rear bumper disposed on the rear vehicle body. It is a figure of the experimental result performed for confirming the ventilation effect of the said embodiment.

Explanation of symbols

1 Rear body 5 Rear wheel 7 Lower back panel (lower rear end)
7a Ventilation port 10 Fender liner 11 Rear bumper 12 Shield plate A Car compartment s Clearance

Claims (2)

A ventilation opening formed at a lower portion of a rear end of a vehicle body constituting the passenger compartment and exhausting air in the passenger compartment to the outside of the vehicle; and a rear bumper disposed at a lower portion of the rear end of the vehicle body so as to cover the ventilation opening from the rear. A vehicle ventilation structure comprising
A ventilation structure for an automobile, wherein a shielding plate for shielding a space between the lower portion of the rear end and the rear bumper is provided inside the ventilation opening in the vehicle width direction. The vehicle ventilation structure according to claim 1,
The vehicle ventilation structure according to claim 1, wherein the shielding plate is provided integrally with a fender liner that covers at least a rear portion of the rear wheel.

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