JPH0714021Y2 - Vehicle interior air exhaust device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a vehicle interior air discharge device for discharging air in a vehicle interior to the outside of the vehicle.

[Prior Art] In general, the size of a vehicle compartment is smaller than that of a general living room, so it is necessary to take a large amount of ventilation in terms of smoking, carbon dioxide gas emitted by humans, and odor. For this reason, in order to introduce as much fresh air as possible into the vehicle interior, it is needless to say that the air introduction hole is provided at a place where the dynamic pressure due to the vehicle speed can be used, and the air discharge hole is more important to remember.

In a truck of the type in which the cab 1 and the loading platform 2 are separated as shown in FIGS. 5 and 6, usually, air exhaust holes are provided at the lower rear portions of the rear pillars 3 having closed cross sections located on both sides of the rear portion of the cab 1, respectively. 4 is provided in the vehicle interior for allowing only air flow from the vehicle interior to the vehicle exterior and for preventing raindrops, water drops, dust, etc. from entering the vehicle interior. An air exhaust device 5 is provided. In the figure, 6 is a door and 7 is a weather strip.

As shown in FIGS. 3 and 4, recently, as the vehicle interior air discharging device 5 as described above, the louver frame 10 in which the lattice-shaped louvers 9 are arranged in the opening 8 is formed with the divided openings 11 in the upper and lower stages. The flap valve support frame 12 is attached to each of the split openings 11 of the flap valve support frame 12 and the split openings 11 are opened by tilting to the outside of the vehicle with respect to the flow of air from the vehicle interior to the vehicle exterior. A flap valve 13 that closes the split opening 11 is provided for the flow of, and the box-shaped duct 14 that includes the entire split opening 11 and extends upward by a required amount is integrally attached to the flap valve support frame 12. It has been devised that ventilation holes 15 and 16 are provided in the upper side wall surface and the upper rear wall surface of the duct 14, respectively.

In a truck equipped with the vehicle interior air discharge device 5, a negative pressure is generated outside the vehicle when the truck is running, and each flap valve is
13 tilts to open each of the divided openings 11, and the air in the passenger compartment flows into the inside of the rear pillar 3 through a communication hole (not shown) formed in an inner plate below the rear pillar 3, and the ventilation holes 15 and 16 are provided. Is sucked out of the vehicle through the duct 14 and the divided openings 11. In this state, noise such as wind noise enters the duct 14 through each of the divided openings 11, and first, the divided opening of the duct 14 is opened.
11 is attenuated and diffuses on the surface facing relative to the surface, and the diffused noise repeatedly hits the inner surface of the box-shaped duct 14, and each time it is attenuated and most of the noise disappears.
Only the slightly remaining noise enters the rear pillar 3 having a closed cross section from the ventilation holes 15 and 16 and propagates into the passenger compartment.

Therefore, if the vehicle interior air exhaust device 5 is provided in the air exhaust hole 4, a considerable effect can be obtained in improving the quietness in the vehicle interior. However, for the purpose of further improving the quietness in the vehicle interior, At the time of mounting the vehicle interior air exhaust device 5, a foam 17 such as urethane resin is packed into the rear pillar 3 having a closed cross section through the air exhaust hole 4, and the lower surface of the foam 17 is pushed up above the duct 14. While inserting the duct 14 into the rear pillar 3, the louver frame 10 is inserted into the air exhaust hole 4
It has been attempted to prevent the noise such as the wind noise from being transmitted from the ventilation holes 15 and 16 to the upper part of the inside of the rear pillar 3, that is, the vicinity of the ears of the occupant by the foamed body 17 by fitting the same to the foamed body 17.

[Problems to be Solved by the Invention] However, when the lower surface of the foam body 17 is pushed up by the upper portion of the duct 14 to install the foam body 17 and the vehicle interior air exhaust device 5 as described above, the upper portion of the duct 14 is foamed. The bottom surface of the air vents 15 and 16 is made of foam 17
It will be covered up by the ventilation holes 15 and 1 at the time of design.
6 The area cannot be secured, the resistance when the air in the vehicle interior is exhausted to the outside of the vehicle through the vehicle interior air exhaust device 5 becomes large, the ventilation volume decreases, and the closing property of the door 6 decreases. There were problems such as.

In view of such circumstances, the present invention can prevent the ventilation holes from being partially blocked by a foam for preventing the propagation of noise such as wind noise, improve the quietness of the vehicle interior, and increase the ventilation volume. Another object of the present invention is to provide a vehicle interior air discharge device that can ensure door closing performance.

[Means for Solving the Problems] The present invention is designed to open an air discharge hole formed in a pillar having a closed cross section of an automobile, and to open the air from a passenger compartment to the outside by a flap valve that can open and close the opening. In the vehicle interior air exhaust device that allows only the flow of the above, a box-shaped duct that includes the opening and extends a predetermined amount upward in the pillar is provided in the opening, and a ventilation hole is provided above the duct. It is characterized in that a support plate is provided which is provided on the upper side of the ventilation hole, the support plate extending in the shape of a canopy and capable of supporting the foam for sound insulation installed directly above the duct.

[Operation] Therefore, even if the foam for sound insulation is packed into the pillar from the air discharge hole while being pushed up at the upper part of the duct, the support plate extended like a canopy to the upper side of the ventilation hole is located just above the duct. Since it supports the foam, the foam is prevented from covering the upper part of the vent hole, and the opening area of the vent hole is secured.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 show an embodiment of the present invention, and the third embodiment
Portions denoted by the same reference numerals as in FIG. 4 and FIG. 4 represent the same items.

As shown in FIG. 1 and FIG. 2, above the ventilation holes 15 and 16 formed in the upper portion of the duct 14 of the vehicle interior air exhaust device 5, respectively,
Support plates 18 and 19 projecting like eaves are integrally formed.

Since the vehicle interior air exhaust device 5 is attached to the air exhaust hole 4 as described above, first, the sound insulating foam 17 is packed into the rear pillar 3 from the air exhaust hole 4 and then the foam 17 is removed. Insert the duct 14 into the rear pillar 3 while pushing the lower surface upwards with the louver frame.
10 is fitted in the air exhaust hole 4, and the installation of the vehicle interior air exhaust device 5 is completed in a state where the foam 17 is positioned immediately above the duct 14 in the rear pillar 3.

At this time, since eaves-shaped support plates 18 and 19 are respectively projected on the upper sides of the ventilation holes 15 and 16, the upper portions of the ventilation holes 15 and 16 are not covered by the foam body 17,
The opening areas of the ventilation holes 15 and 16 are secured, the air in the passenger compartment is not adversely discharged to the outside of the vehicle, and the ventilation amount and the closing property of the door are not deteriorated.

Most of the noise such as wind noise during traveling is attenuated and disappears by repeatedly hitting the inner surface of the box-shaped duct 14, and the slightly remaining noise is the ventilation holes 15 and 16.
Even if it comes out from the inside to the rear pillar 3, it is blocked by the foamed body 17 and is not transmitted to the vicinity of the ears of the occupant, so that the quietness in the passenger compartment is further improved.

In addition, the vehicle interior air exhaust device of the present invention is not limited to the above-described embodiment, and in addition to the truck of the type in which the air exhaust hole is formed in the lower portion of the rear pillar rear surface and the cab and the cargo bed are separated, For example, the present invention can be applied to a passenger car or the like in which the air discharge hole is formed in the center of the side surface of the center pillar in the up-down direction. In short, an automobile in which the air discharge hole is formed on the outer plate side of the pillar having a closed cross section. It goes without saying that various modifications can be made without departing from the scope of the present invention, such as being applicable to any kind.

[Advantages of the Invention] As described above, according to the vehicle interior air exhaust system of the present invention, the sound insulation foam is provided at a position directly above the duct inserted from the air exhaust hole in the pillar having the closed cross section. It is possible to install it without covering the part of the ventilation hole on the upper part of the duct with the foam, it is possible to improve the quietness of the vehicle interior and secure ventilation and it is excellent that the closing property of the door is not obstructed. Can be effective

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle interior air exhaust device according to an embodiment of the present invention, and FIG. 2 is a side sectional view showing an installed state of the vehicle interior air exhaust device of FIG. 1 (II-II in FIG. 1). Cross-sectional view), 3rd
The figure is a perspective view of a vehicle interior air exhaust device recently devised,
FIG. 4 is a side sectional view showing an installation state of the vehicle interior air exhaust device of FIG. 3 (corresponding to IV-IV sectional view of FIG. 3), and FIG. 5 is a truck of a type in which a cab and a cargo bed are separated. Perspective view of
FIG. 6 is a sectional view taken along line VI-VI in FIG. 1 is a cab, 2 is a luggage carrier, 3 is a rear pillar, 4 is an air exhaust hole, 5 is an air exhaust device in a vehicle compartment, 10 is a louver frame, 13
Is a flap valve, 14 is a duct, 15 and 16 are ventilation holes, 17 is a foam, and 18 and 19 are support plates.

Claims (1)

[Scope of utility model registration request] 1. A vehicle, which is attached to an air discharge hole formed in a pillar having a closed cross section of an automobile so as to be opened, and a flap valve capable of opening and closing the opening allows only an air flow from the vehicle interior to the vehicle exterior. In the indoor air discharge device, the opening is provided with a box-shaped duct that includes the opening and extends upward in the pillar by a required amount, and a ventilation hole is formed in an upper portion of the duct. An air ejecting device for a vehicle interior, comprising a support plate, which is provided on the upper side of the ventilation hole and extends in a canopy shape so as to support the foam for sound insulation, which is installed directly above the duct.