JP2015193374A - Ventilation structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation structure of a vehicle, which provides ventilation in the vehicle by releasing air in the vehicle to the outside from a ventilation duct provided in the rear part of the vehicle.SOLUTION: In a ventilation structure of a vehicle, a ventilation channel constituting at least a part of an in-vehicle air channel leading to a ventilation duct is formed from a clearance between the backside of an in-vehicle interior part and a body panel. Preferably, the gross area of the ventilation channel is comparable with that of the ventilation duct.

Description

The present invention relates to a vehicle ventilation structure that ventilates the interior of a vehicle by releasing the air in the vehicle to the outside air from a ventilation duct provided at the rear of the vehicle in order to simultaneously reduce the internal pressure of the vehicle and improve the NV performance. .

In the conventional vehicle ventilation structure, the fender panel installed along the side part of the cargo compartment provided at the rear of the vehicle and the openings formed in the interior trim allow communication with the outside air through the opening of the body. (See Patent Document 1).

As shown in FIG. 11, the vehicle ventilation structure 50 disclosed in Patent Document 1 has a belt retractor opening 51 and a ventilation cover 52 of the deck side trim that are close to each other. The outside noise tends to enter the vehicle through the slit of the ventilation cover 52, and the NV performance tends to deteriorate.

In addition, in the case of a deck side trim formed by press-molding a nonwoven fabric, if a hole is directly drilled by forming the slit-shaped ventilation cover 52, the rigidity of the main body is insufficient and the appearance is deteriorated. It is necessary to set another type of cover, but the appearance and installation are poor due to different materials.

In the first place, in-vehicle ventilation is to release the in-vehicle air to the outside air by lowering the in-vehicle pressure. Conventionally, the in-vehicle air is passed through the rear floor and below the rear (rear) body. In general, air is guided to a ventilation duct called a vent duct provided and discharged outside.

However, when the air is guided to the rear ventilation duct through the rear floor, it is excellent in that the internal pressure is reduced and the air is released to the outside, but the sound of the outside air enters the vehicle as it is. There was a problem that the NV performance was significantly lowered. In order to avoid this, it is conceivable to provide a damping member separately, but it is not always preferable in terms of cost and design.

JP 2012-144155 A

In view of the above problems, the present invention has been created. In order to achieve a reduction in the internal pressure of the vehicle and an improvement in the NV performance at the same time, the vehicle interior air is discharged from the ventilation duct provided in the rear portion of the vehicle. It aims at providing the ventilation structure of the vehicle which ventilates the inside of a car by releasing in.

The present invention provided to solve the above-mentioned problem is a vehicle ventilation structure that ventilates the interior of the vehicle by releasing the air in the vehicle to the outside air from a ventilation duct provided at the rear of the vehicle,

At least a part of the air flow path in the vehicle reaching the ventilation duct is formed by a gap between the back surface of the interior part in the vehicle and the body panel.

According to the ventilation structure of the vehicle, the gap between the back surface of the internal member of the vehicle and the body panel is used as the air flow path to the ventilation duct (the vent duct opening 31 in the present embodiment). . From the viewpoint of lowering the internal pressure, the applicant only needs to secure the area of the air flow path flowing through the vehicle, but from the viewpoint of sound insulation prevention, the sound attenuation effect is better and better through the complicated flow path. I learned that. The ventilation flow path, which is the gap between the back surface of the vehicle internal member that originally exists and the body panel, forms a complicated labyrinth flow path, and if this is utilized, a separate structure is newly provided. There is no need to reduce the internal pressure and improve the NV performance at the same time. In addition, a place where a passenger cannot normally see becomes a ventilation flow path, which is excellent in design. Further, the back surface of the internal member is often originally subjected to a treatment for preventing abnormal noise (such as attaching a felt material), which is advantageous in that it can be utilized.

Moreover, it is preferable that the total area of the said ventilation flow path in the ventilation structure of this vehicle is comparable as the total area of the said ventilation duct.

As described above, in order to reduce the internal pressure in the vehicle, the applicant requires that the total flow area (path area) in the vehicle is smaller than or equal to the total opening area of the ventilation duct. We paid attention to the contradicting condition that if the opening area of the duct is made too large, the external sound is difficult to attenuate and the sound insulation effect is lowered, and thus the NV performance is lowered. Therefore, in the ventilation structure of this vehicle, in order to simultaneously achieve lowering the internal pressure and not lowering the sound insulation effect, the flow path area in the vehicle and the total opening area of the ventilation duct are made to be approximately the same.

Further, a part of the ventilation flow path is a vehicle ventilation structure that ventilates the interior of the vehicle by communicating with the outside air from the ventilation duct through the body opening from the opening of the interior trim provided in the rear portion of the vehicle. The interior trim opening may be disposed in front of and below the vehicle opening with respect to the body opening, and the front surface of the interior trim opening may be covered with another part with a gap therebetween.

In the vehicle ventilation structure of the present invention, the front face of the interior trim opening is covered with other parts with a gap, so that the interior trim opening is difficult for the passenger to see directly and the appearance is good.

Moreover, since the opening of the interior trim is arranged in front of and below the vehicle with respect to the body opening, a sufficient distance can be obtained between the interior trim opening and the body opening, so that noise from the outside of the vehicle is generated inside the vehicle. Hard to invade.

Furthermore, in the present invention, since an opening as a ventilation opening can be formed also in an interior trim formed by press-molding a nonwoven fabric, indoor quality can be improved. In addition, since the opening of the interior trim is arranged at a position where the flow of air from the front of the vehicle can be received, air venting such as when the door is opened and closed can be efficiently performed through the opening of the interior trim.

The present invention uses a gap between the back surface of the internal member of the vehicle and the body panel as an air flow path to the ventilation duct, so that it is not necessary to newly provide a separate structure, and a reduction in internal pressure and NV performance are achieved. Can be achieved at the same time, and the design is excellent. Moreover, in the ventilation structure of this vehicle, by reducing the internal pressure and not reducing the sound insulation effect at the same time, by making the total of the passage area in the vehicle and the total opening area of the ventilation duct equal. Can do.

In addition, according to the ventilation structure of the vehicle, the front face of the interior trim opening is covered with other parts with a gap, so that the interior trim opening is difficult for a passenger to see directly and the appearance is good. In addition, since the opening of the interior trim is arranged in front of and below the body opening, the distance between the interior trim and the body opening can be sufficiently increased, and noise from outside the vehicle enters the interior of the vehicle. The effect that it is difficult to do can be demonstrated.

It is a perspective view which shows the structure around a vehicle rear deck and an air flow path in an example of the ventilation structure of the vehicle of this invention. It is a perspective view which shows a mode that the back seat 14 around a deck box and a sheet | seat is attached to an underbody. It is a perspective view which shows the attachment state of the deck board attached to a deck box and a deck box, and a floor panel. The perspective view of the deck trim attached to a vehicle body rear wall part is shown by (a), and the schematic sectional drawing in alignment with line CC of (a) is shown by (b). The opening area of the vent duct opening that is the outlet of the air flow, the total amount of the channel area formed by the gap between the interior part and the deck box as the path of the diverted air flow, and the total amount of the channel area in the middle FIG. The opening area of the vent duct opening that is the outlet of the air flow, the total amount of the channel area formed by the gap between the interior part and the deck box as the path of the diverted air flow, and the total amount of the channel area in the middle FIG. It is the perspective view which showed the rear part structure of the vehicle to which the ventilation structure of the vehicle which concerns on other this invention is applied. It is the perspective view which looked at the ventilation structure of the vehicle which concerns on other this invention from the vehicle front side. It is the perspective view which looked at the ventilation structure of the vehicle which concerns on other this invention from the vehicle rear side. It is the perspective view which looked at the ventilation structure of the vehicle which concerns on other this invention from the vehicle rear side. It is a perspective view for demonstrating the ventilation structure of the conventional vehicle.

The present invention is schematically illustrated by the illustrated embodiment, and an embodiment of a vehicle ventilation structure according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing a structure around a vehicle rear deck and an air flow path in an example of a vehicle ventilation structure of the present invention. In FIG. 1, a rear portion 12 a of the underbody 12, a deck side trim 32, and a vehicle body rear wall portion (rear edge) 4 with the rear door, seat, floor, and deck box removed are shown. FIG. 2 is a perspective view showing a state in which the deck box 16 and the rear seat 14 around the seat are attached to the underbody 12.

FIG. 3 is a perspective view showing the deck box 16, the deck board 18 attached to the deck box 16, and the floor panel 1. FIG. 4 is a deck attached to the vehicle body rear wall 4 in FIG. A perspective view of the trim 22 is shown, and (b) shows a schematic cross-sectional view along line CC in (a). Note that the deck box 16 shown in FIGS. 3 and 4 is exemplified for a two-wheel drive.

A rear seat 14 is disposed at the rear seat position of the vehicle. The rear seat 14 can be tilted forward, and a floor panel 14a is attached to the back surface of the rear seat 14, and is attached so as to form a floor when tilted as shown in FIG. Further, the underbody 12 at the loading platform position behind the vehicle is provided with a recess 12a, and the deck box 16 is mounted in the recess 12a. A gap is provided in the gap between the bottom (or the side) of the deck box 16 and the underbody 12a.

Further, as shown in FIG. 3, a deck board 18 is mounted on the upper surface of the deck box 16, and the floor panel 1 is mounted on the upper surface of the deck board 18 to form a floor of the rear loading platform.

Referring again to FIG. 1, at least a part of the air flow W that has passed through the rear seat 14 enters the gap between the bottom of the deck box 16 and the underbody 12. The shapes of the bottom portion of the deck box 16 and the underbody 12 are formed such that they are combined to form an air flow path. Specifically, the air flow W that has entered the bottom of the deck box 16 is divided into left and right to form air flows W1, W2, W3, and W4.

The air flow W1 proceeds as it is in the same direction as the intrusion direction of the air flow W, reaches the vent duct opening 31 (reference numbers 31b, 31c) provided in the rear wall portion 4 of the vehicle body, and is released to the outside air. . The vent duct opening 31 is an opening serving as an outlet for releasing the air inside the vehicle to the outside, and is provided symmetrically below the vehicle body rear wall 4 here.

Further, the air flow W2 rises from the recess 12a of the underbody 12 along the side thereof, is guided to the vent duct opening 31a and is discharged to the outside, and reaches the vent duct opening 31a. Similarly, the air flow W4 passes through a flow path that generally rises from the recess 12a of the underbody 12 along its side, enters the deck site trim 32, and is not shown in FIG. The side trim 32 is discharged from the vent duct opening 31a through the flow path. At this time, the air flow in the deck site trim 32 easily flows due to the presence of the belt retractor hole 30. The role of the belt retractor hole 30 will be described later.

Further, the air flow W3 is divided at the front surface of the deck box 16 before the air flow W reaches the bottom of the deck box 16, and enters the deck site trim 32 in the same manner as the air flow W4. It is discharged from the opening 31a. In FIG. 1, the flow of air flow W is illustrated as air flows W1, W2, W3, and W4. However, the rear surface of the interior parts (illustrated by deck box 16 in FIGS. 1 to 3) and the body panel (FIGS. 1 to 3). In FIG. 2, the other flow path may be a gap with the underbody 12), enter the inside through a vent opening 33 of the deck side trim 32 described later, reach the vent duct opening 31 a, and enter the outside. Also included when released.

Furthermore, the deck trim 22 shown in FIG. 4 (a) is attached to the rear wall portion 4, but there is a gap between the deck trim 22 and the rear wall portion 4 as shown in FIG. 4 (b). The airflow W1 that has passed through the gap between the back surface of the deck box 16 and the underbody 12 enters the gap from below, and is discharged to the outside from the vent duct opening 31c (or 31b).

Here, the relationship between the total amount of the opening area of the vent duct opening 31 and the total amount of the flow path area formed by the gap between the back surface of the interior part in the vehicle and the body panel will be described with reference to FIGS. In the air flow W, the total area (total) of the flow paths formed by the gap between the interior parts such as the underbody 12 and the deck box 16 is substantially the same as the total amount (total) of the opening area of the vent duct opening 31. Designed as an area.

5 and 6, the opening area of the vent duct opening 31 that is the outlet of the air flow W (= W1 + W2 + W3 +...) Is Xo (hereinafter also referred to as “outlet total area Xo”). Xi (hereinafter also referred to as “total path area Xi”), the total amount of the flow path area formed by the gap between the interior parts such as underbody and the deck box 16 as the paths of W1, W2, W3,. A schematic diagram for explaining the relationship when the total amount of the flow path area of the intermediate part until reaching the vent duct opening 31 is Xm (hereinafter also referred to as “intermediate total area Xm”) is shown. .

As shown in FIG. 5 (a), in the case where the total route area Xi = the total exit area Xo, the air flow in the vehicle is removed as it is, and the balance between the effect of reducing the internal pressure and the effect of attenuating the outside air sound is good. Conceivable. As shown in FIG. 5B, when the total path area Xi = intermediate total area Xm <outlet total area Xo, the effect of reducing the internal pressure is great, but the intrusion of the outside air sound is large and cannot be said to be a good example. As shown in FIG. 5C, when the total path area Xi> the total outlet area Xo, the amount of air discharged at the outlet is limited as compared with the amount of air at the inlet, so the effect of reducing the internal pressure is low and a good example. I can't say that.

FIG. 6 shows an example in which the total area of the intermediate path and the outlet opening on the way change with respect to the total entrance area. As shown in FIG. 6A, when the intermediate total area Xm <the total path area Xi <the total outlet area Xo, the effect of reducing the internal pressure is great, but the intrusion of the outside air sound is large and cannot be said to be a good example. Further, as shown in FIG. 6B, when the intermediate total area Xm <the total outlet area Xo <the total path area Xi, the amount of air discharged at the outlet is limited compared to the amount of air at the inlet, so that the internal pressure is reduced. It is not a good example because of its low effect. Furthermore, as shown in FIG. 6 (c), when the intermediate total area Xm <total path area Xi = total outlet area Xo, the total area of the inlet and the outlet is the same, so the effect of reducing the internal pressure and the attenuation effect of the outside air sound The balance is good and is considered a good example.

From the above, it can be understood that the total balance area Xi and the total outlet area Xo are substantially the same, because the balance between the effect of reducing the internal pressure and the attenuation effect of the outside air sound is good. In addition, this is not affected by the total intermediate area Xm, and even when the bottom of the deck box 16 having a complicated shape as shown in FIG. 1 is used as a route, the effect of reducing the internal pressure by combining the total area of the inlet and the outlet. In view of the sound insulation effect, it is preferable to use a complicated labyrinth shape as a route because the sound attenuation effect is high.

The total path area Xi is the total amount of the flow path area formed by the gap between the back surface of the interior parts in the vehicle and the body panel. The interior parts can be considered other than the deck box 16, and the deck side trim 32 Also included is a flow path between the body panel and the body panel. Examples are given below.

FIG. 7 is a perspective view showing a structure in the vicinity of the deck side trim 32 at the rear of the vehicle. FIG. 8 is a perspective view of the deck side trim 32 of FIG. 7 as viewed from the front side of the vehicle. 9 and 10 are perspective views of the deck side trim 32 of FIGS. 7 and 8 as viewed from the vehicle rear side. This vehicle is a hatchback vehicle type provided with a back door, and FIGS. 8 to 10 show a state in which the back door is removed. 7 to 10, for convenience of explanation, an XYZ three-dimensional coordinate system is defined, and the structure will be described with reference to this coordinate system. Accordingly, in FIGS. 7 to 10, the longitudinal direction of the vehicle is defined as the X direction, the vehicle width direction is defined as the Y direction, and the vertical direction of the vehicle is defined as the Z direction.

As shown in FIG. 7, the vehicle includes a floor panel 1 constituting a bottom surface portion of the vehicle body, a luggage compartment 2 provided at the rear portion of the vehicle body, a vehicle body side wall portion 3 installed on a side portion thereof, And a vehicle body rear wall portion 4 provided at the rear end portion. The floor panel 1 is configured such that a rear seat (not shown) can be installed. The vehicle body rear wall 4 is provided with a rear pillar (not shown).

The vehicle body side wall part 3 has an inner panel (not shown) and an outer panel (not shown) provided on the inner side in the vehicle width direction (Y direction), and a deck side trim 32 (interior trim) is provided on the inner side of the inner panel. Is arranged. 7 indicates a belt retractor hole (body opening) provided on the inner panel, and 31 indicates a vent duct opening provided on the outer panel (a plurality of openings are provided in FIG. 1). .

A ventilation opening 33 (opening of an interior trim) facing the vehicle forward is formed at a position on the side of the occupant seat side of the deck side trim 32 at a position where air flow from the front of the vehicle due to internal pressure can be received (FIG. 7). (See (a)). As shown in FIG. 7A, the ventilation opening 33 is disposed in front of and below the vehicle with respect to the belt retractor hole 30. The vent opening 33 is disposed at a position where the front surface 33a can be covered with a rear seat (not shown) with a gap.

Each arrow in FIG. 7A indicates the flow of air flowing into the ventilation opening 33. As indicated by the arrows, the air from the front of the vehicle flows into the vent opening 33, and then sequentially passes through the belt retractor hole 30 and the vent duct opening 31, and is exhausted to the outside of the vehicle. Thus, ventilation in the vehicle is realized by extracting the internal pressure of the air in the longitudinal direction of the vehicle.

As shown in FIG. 7B, the vent opening 33 of the deck side trim 32 has a shelf shape in which a roof 34 is provided in the vehicle upward direction (Z direction). Further, as shown in FIG. 7B, a flange 35 is provided around the ventilation opening 33. The flange 35 is formed so as to be connected to a flange 36 formed at the lower end edge of the deck side trim 32.

In the above configuration, since the front surface 33a of the ventilation opening 33 is covered with a rear seat (not shown) with a gap therebetween, only the roof 34 forming a shelf can be seen from the gap with the rear seat cushion. The ventilation opening 33 is not easily seen directly from the passenger, and the appearance is good.

Further, since the ventilation opening 33 of the deck side trim 32 is disposed in front of and below the belt retractor hole 30, a sufficient distance between the ventilation opening 33 and the belt retractor hole 30 can be obtained. Therefore, since the distance from the belt retractor hole 30 to the vent opening 33 is far away, the sound entering from the outside of the vehicle is attenuated, and since it is located below the rear seat cushion, it is difficult for the sound to reach the occupant's ears. Is less likely to enter the vehicle and is advantageous in improving NV performance.

Moreover, since the ventilation opening 33 as a ventilation opening can be formed also in the deck side trim 32 which press-molded the nonwoven fabric, indoor quality can be improved.

Further, since the vent opening 33 of the deck side trim 32 is disposed at a position where the air flow from the front of the vehicle can be received, internal pressure reduction (air venting) such as when the door is opened and closed can be efficiently performed through the vent opening 33. Can do. Further, as described above, the flow path from the vent opening 33 can be included in the ventilation flow path having a total flow path area comparable to the total opening area of the vent duct opening 31.

Further, by connecting the flange 35 provided around the ventilation opening 33 to the flange 36 formed at the lower end edge of the deck side trim 32, the rigidity of the ventilation opening 33 is ensured and the inner appearance from the rear seat is prevented. it can.

As mentioned above, although embodiment of this invention was described based on drawing, a specific structure is not limited to these embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

The vehicle ventilation structure of the present invention can be suitably used in a vehicle that ventilates a vehicle interior.

1 Floor panel 2 Cargo compartment 3 Car body side wall (rear edge)
12 Underbody 14 Rear seat 16 Deck box 18 Deck board 30 Belt retractor hole (Body opening)
31 Vent duct opening 32 Deck side trim (interior trim)
33 Vent opening (interior trim opening)
33a Front (Interior trim opening front)
34 Roof
35, 36 Flange

Claims (3)

A vehicle ventilation structure that ventilates the interior of a vehicle by releasing the air inside the vehicle from outside through a ventilation duct provided at the rear of the vehicle,
A vehicle ventilation structure, wherein at least a part of an air flow path in the vehicle reaching the ventilation duct is formed by a gap between a back surface of an interior part in the vehicle and a body panel. The vehicle ventilation structure according to claim 1, wherein a total area of the ventilation flow path is approximately the same as a total area of the ventilation duct. A part of the ventilation flow path is a vehicle ventilation structure that ventilates the interior of the vehicle by communicating with the outside air from the ventilation duct through the body opening from the opening of the interior trim provided in the rear part of the vehicle,
The opening of the interior trim is
Arranged in front of and below the vehicle with respect to the body opening,
The front face of the interior trim opening is
The ventilation structure according to claim 1 or 2, wherein the ventilation structure is covered with another part with a gap.