JP2001130243A - Ventilation structure for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation structure for an automobile capable of sufficiently bleeding interior air and reducing noise. SOLUTION: In this ventilation structure ventilating the interior air through the inside of a pillar of the automobile, a seat belt retractor 12 is attached to the pillar 6, a slit 18 for bleeding air is formed toward the downward direction on a seat belt retractor cover 17 covering the seat belt retractor 12, and the inside of the seat belt retractor cover 17 is communicated with the inside of the pillar 6 via an opening hole 15 formed on the pillar 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation structure for a motor vehicle, and more particularly to a ventilation structure for a motor vehicle that regulates air in a vehicle compartment when a door is opened and closed.

[0002]

2. Description of the Related Art In a truck in which a rear body and a cabin are independent from each other, a cabin having a driver's cab is provided at a front portion of a vehicle.
In some cases, a ventilation device 101 as shown in FIG.

[0003] The ventilator 101 will be described. A cabin back panel 102 is disposed in the vehicle width direction on the back of the cab, and a cabin back window member 103 having a substantially U-shaped cross section is provided on the cabin back panel 102. Installed in the vehicle width direction. Since the cabin back window member 103 is bulged forward, a first closed section 104 is formed by the cabin back window member 103 and the cabin back panel 102. A plurality of first air inlet holes 105 communicating with the closed cross section 104 are provided below the cabin back window member 103. The cabin back panel 102, the rear pillar inner panel 106, and the cab side outer panel 107
The first closed cross section 104 communicates with the closed space 108 at a side end thereof.

Further, the rear pillar inner panel 106
The seat belt retractor mounting opening 10
A lid-shaped seat belt retractor cover 110 is attached to the rear pillar inner panel 106 from the indoor side so as to close the opening 109. A rear pillar lower locker 111 is provided below the rear pillar inner panel 106, and an air outlet 112 is provided in the rear pillar lower locker 111 to communicate with the outside. A cabin back lower panel 113 is horizontally fixed to the rear pillar lower locker 111 and the cabin back panel 102 on the indoor side of the rear pillar lower locker 111.

[0005] As shown in FIG. 12, the air in the cab first flows through a first air inflow hole 105 provided in a lower portion of the cabin back window member 103.
Inside the closed section 104 of FIG.
2 right direction) flows. Then, the first closed section 104
The air that has entered the closed space 108 from the side end of the airbag flows downward, and is discharged outside from the air outlet 112 of the rear pillar locker 111.

However, according to the above prior art, when the inside volume of the cab is small, when the door is closed, the pressure inside the cab rises sharply. Insufficient air discharge,
There was a problem that hindered closing the door. Further, since the first air inflow hole 105 is provided in the cabin back window member 103 which is relatively close to the occupant's ear, the intrusion of noise outside the vehicle is easily felt by the ear.

Therefore, a prior art in which an opening is formed in the side surface of the seat belt retractor cover 110 to improve the exhaust efficiency of room air (Japanese Patent Application Laid-Open No. 11-99822).
It has been known.

[0008]

However, according to the above prior art, the seat belt retractor cover 11
Even if an opening is formed on the side surface of 0, the opening area is limited by the seatbelt retractor, so that the exhaust efficiency is not sufficiently improved. Further, since the seat belt retractor is provided in the rear pillar, the cross section of the rear pillar must be large, and the interior space is limited. Further, if the seat belt retractor is shifted toward the rear side of the vehicle body, the seat belt retractor undesirably jumps out toward the loading platform.
Further, when an opening is formed on the side surface of the seat belt retractor cover 110, a problem occurs that external noise is easily transmitted to the vehicle interior.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a vehicle ventilation structure capable of sufficiently removing air from a room and reducing noise.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a ventilation structure for ventilating room air through a pillar of an automobile, wherein a seat belt retractor is attached to the pillar and the seat belt retractor is attached to the pillar. A slit for venting air is formed in the seat belt retractor cover to be directed downward, and the inside of the seat belt retractor cover is communicated with the inside of the pillar through an opening hole formed in the pillar. Further, the present invention resides in that a duct connected to the opening hole is provided in the pillar, and a sound absorbing material is provided in the duct. Further, a seat belt retractor is provided on the indoor side of the opening.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 to 4 show an embodiment in which the automobile ventilation structure of the present invention is applied to a truck type automobile. 1 to 4, reference numeral 1 denotes a vehicle body of a truck-type vehicle including a cabin 2 and a cargo bed 3, and a cabin back panel 5 is disposed on the entire back of the driver's seat 4 of the vehicle body 1. . On both sides of the cabin back panel 5, rear pillars 6 are provided. The rear pillars 6 constitute an inner panel side with a rear pillar inner panel 7 and a rear pillar lower locker 8,
The cabside outer panel 9 constitutes the outer panel side, and a closed cross section S is formed. Both sides 10a of the cab back lower member 10 are joined to the joint between the rear pillar inner panel 7 and the rear pillar lower locker 8 by spot welding w.

The rear pillar inner panel 7 is formed with a plurality of ventilation holes 11 having a long hole shape extending in the front-rear direction of the vehicle body at predetermined intervals in the vertical direction. On the side, a seat belt retractor 12 is fixed by screws 13 and bolts 14. The seat belt retractor 12 is attached at the place shown in FIG.
As shown in FIG.
Is formed, and the seat belt retractor 12
It is attached to the indoor side of the opening hole 15. The seat belt retractor 12 has an opening 1
The seat belt retractor reinforcement 16 is welded so as to reinforce the periphery of the seat 5.

A box-shaped seat belt retractor cover 17 that covers the seat belt retractor 12 is provided outside the seat belt retractor 12. The seat belt retractor cover 17 extends in the vehicle width direction. As shown in FIGS. 6 and 7,
A large number of slits 18 extending in the front-rear direction of the vehicle body 1 are vertically arranged. These slits 18 are formed so as to face downward, and the direction of the sound passing through the slits 18 is directed downward in the vehicle compartment.

The seat belt retractor cover 17
The front edge 6a of the rear pillar 6 is provided on the front side of the vehicle body 1.
Is formed, and a bent portion 19 that engages with the front edge 6a of the rear pillar 6 is formed on the edge 17a. An upper portion of the seat belt retractor cover 17 is provided with an extending portion 17b facing upward, and a mounting hole 20 for mounting is provided in the extending portion 17b.
Are formed at one location (or at multiple locations). The mounting holes 20 are aligned with the mounting holes 7 b (see FIG. 5) formed in the rear pillar inner panel 7 and are fixed by clips 21. Further, a projecting boss 22 is projected from a lower end portion of the seat belt retractor cover 17, and the projecting boss 22 engages with an engaging hole (not shown) formed in the cabback lower member 10. It is assembled.

A duct 24 to which a sound absorbing material 23 is adhered is mounted in the rear pillar 6 in an opening hole 15 formed in the rear pillar inner panel 7. This duct 24 is shown in FIG.
As shown in FIG. 11, the surface 2 facing the opening hole 15
The sound absorbing material 23 is attached to the front and back of 4a (see FIG. 11), and side surfaces 24b bent in the vehicle width direction are provided on both sides of this surface 24a. A tongue piece 24c is provided outside the side surface part 24b, and an engaging pawl 25 is provided on the tongue piece 24c toward the outside of the vehicle body. An engagement recess 26 is provided at a lower end of the side surface portion 24b, and the duct 24 is mounted by assembling the engagement recess 26 with a bent portion 15a formed on a lower side edge of the opening hole 15. (See FIG. 9). The duct 24 is attached by engaging the engagement pawl 25 with a square hole 7a formed in the rear pillar inner panel 7 beside the opening hole 15 (see FIGS. 5 and 10). The inside of the rear pillar 6 is opened to the outside through an exhaust port 27 formed in the rear pillar lower locker 8, and the air pressure in the vehicle compartment is exhausted through the exhaust port 27.

Next, the operation of the present invention having the above configuration will be described. Since the slit 18 is formed in the seatbelt retractor cover 17, the air pressure generated in the vehicle interior when the door is closed, as shown by the white arrow in FIG. The air is introduced into the rear pillar 6 through a slit 18 formed in the rear pillar 17 and is exhausted to the outside through an exhaust port 27 formed in the rear pillar lower locker 8. On the other hand, noise transmitted to the inside of the rear pillar 6 through the exhaust port 27 formed in the rear pillar lower locker 8 is absorbed by the sound absorbing material 23 attached to the front and back of the surface 24a of the duct 24 as shown by the black arrow in FIG. Noise transmitted to the cabin is reduced. The duct 24 has a surface 2 facing the opening hole 15.
Since the sound absorbing material 23 was attached to the front and back of 4a, from outside,
The noise transmitted to the room through the rear pillar 6 is
Is absorbed by the sound absorbing material 23 when passing through. Since the sound absorbing material 23 is attached to the front and back of the duct 24, the sound absorbing performance is good. Further, since the sound absorbing material 23 is stuck on the front and back of the surface 24a of the duct 24 facing the opening hole 15, it is possible to suppress noise into the room. Sound absorbing material 23
The sound absorbing performance can be improved by sticking on the other surface or the entire surface of the duct 24. In this case, it can be attached to either one of the front and back.

Since the seat belt retractor 12 is provided in the vehicle interior, the cross section of the rear pillar 6 can be reduced. Therefore, the indoor space can be expanded. When the duct 24 is not used, the seat belt retractor 12 can be assembled inside the rear pillar 6. Also in this case, since the slit 18 of the seatbelt retractor cover 17 is formed downward, the noise is directed to the feet of the occupant.
Noise can be reduced as compared with the related art. In addition, since ventilation can be performed by the slit 18 of the seat belt retractor cover 17, ventilation performance can be improved. Seat belt retractor cover 17
The front edge 6a of the rear pillar 6 is provided on the front side of the vehicle body 1.
Is formed along the front edge 6a of the rear pillar 6, so that the seat belt retractor cover 17 can be easily assembled. It can be carried out. At the lower end of the seat belt retractor cover 17, a projecting boss 22 is projected, and the projecting boss 22 engages with an engaging hole formed in the cabback lower member 10 and is assembled. Positioning can be easily performed during assembly.

The duct 24 has a tongue portion 24c provided on the outside of the side surface portion 24b.
Since the engaging pawl 5 is provided, the engaging pawl 25 can be easily assembled by engaging with the square hole 7 a formed in the rear pillar inner panel 7. An engagement recess 26 is provided at the lower end of the side surface portion 24b of the duct 24. The engagement recess 26 is assembled to a bent portion 15a formed on the lower side edge of the opening hole 15 to mount the duct 24. Therefore, the duct 24 can be easily assembled.

The present invention is not limited to the above-described embodiment. For example, in the case of a truck, the ventilation structure of the present invention is applied to a vehicle body having a ventilation opening formed in a cabin back panel. It goes without saying that you can do it. Further, the present invention can be applied to pillar portions other than the rear pillar 6. Furthermore, although the slit 18 of the seat belt retractor cover 17 is formed only on the surface in the vehicle width direction, it can be formed on the surface of the vehicle body in the front-rear direction.
The length and width of the slit 18 can also be set arbitrarily.

[0021]

As described above, according to the ventilation structure for an automobile of the present invention, the following effects can be obtained. The ventilation structure for ventilating room air through a pillar of an automobile according to claim 1, wherein a seat belt retractor is attached to the pillar, and a seat belt retractor cover covering the seat belt retractor is provided with a slit for air release. Forming towards the direction,
Since the inside of the seatbelt retractor cover is communicated with the interior of the pillar through an opening hole formed in the pillar, the air outflow area in the interior of the vehicle can be enlarged, so that the door closeability is improved, and Noise can be reduced. Further, since the air inlet into the pillar can be arranged at a position near the exhaust port to the outside of the vehicle, the exhaust efficiency is good. According to the second aspect of the present invention, a duct connected to the opening hole is provided in the pillar, and the sound absorbing material is provided in the duct, so that external noise into the vehicle compartment can be reduced. According to the third aspect, the seat belt retractor is disposed on the indoor side of the opening, so that the pillar cross section can be determined regardless of the size of the seat belt retractor, and the pillar cross section can be reduced. .

[Brief description of the drawings]

FIG. 1 is a side view showing a vehicle body to which a vehicle ventilation structure according to the present invention is applied.

FIG. 2 is a perspective view showing an embodiment of a ventilation structure for an automobile according to the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a perspective view showing a rear pillar inner panel of FIG. 2;

FIG. 6 is a perspective view showing the seat belt retractor cover of FIG. 2;

FIG. 7 is a sectional view taken along line CC of FIG. 6;

FIG. 8 is a perspective view showing the duct of FIG. 2;

9 shows the duct of FIG. 8, (a) is a front view, (b)
FIG. 5A is a left side view of FIG.

FIG. 10 is a sectional view taken along line DD of FIG. 9 (a).

FIG. 11 is a sectional view taken along line EE of FIG. 9 (a).

FIG. 12 is a perspective view showing a conventional automobile ventilation structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Cabin 3 Carrier 4 Driver's seat 5 Cabin back panel 6 Rear pillar 7 Rear pillar inner panel 8 Rear pillar lower locker 9 Cab side outer panel 10 Cab back lower member 11 Vent 12 Seat belt retractor 15 Opening hole 16 Seat belt retractor lean Force 17 Seat belt retractor cover 18 Slit 19 Bend 20 Mounting hole 23 Sound absorbing material 24 Duct 27 Exhaust port

Claims (3)

[Claims] In a ventilation structure for ventilating indoor air through a pillar of an automobile, a seat belt retractor is attached to the pillar, and a seat belt retractor cover covering the seat belt retractor is provided with a slit for air release. A ventilation structure for an automobile, wherein the ventilation structure is formed in such a manner that the interior of the seat belt retractor cover communicates with the interior of the pillar through an opening hole formed in the pillar. 2. The vehicle ventilation structure according to claim 1, wherein a duct connected to the opening is provided in the pillar, and a sound absorbing material is provided in the duct. 3. The ventilation structure for an automobile according to claim 1, wherein a seat belt retractor is provided on the indoor side of the opening.