JPS62139712A - Ventilating device - Google Patents

Abstract

PURPOSE:To secure constant ideal ventilating capacity without receiving any influence of a car speed, by setting up a clearance controlling blade, contacting or separating to or from a drafter hole of a drafter box, in a passage consisting of a body panel and a bumper via a driving device. CONSTITUTION:When a car speed is larger than the setting value, sufficient air runs past a passage 7 consisting of a rear fender panel 1 and a bumper 2. Accordingly, on the basis of a detection signal out of a car speed sensor, motion of a rod 15 is reduced as far as the specified stroke by an actuator 14, and a clearance controlling blade 11 supported by a link 10 is made to get nearer to a drafter hole 3 of a drafter box 4. With this constitution, a passing air quantity between the drafter hole 3 and he clearance controlling blade 11 is decreased, making the inside of the drafter box 4 into the setting negative pressure, thus ideal ventilating capacity is secured. On the other hand, when the car speed is smaller than the setting value, the clearance controlling blade 11 is separated from the drafter hole 3 and the passing air quantity is increased.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a ventilation system for a motor vehicle.

Conventional automobiles are equipped with a ventilation system to introduce fresh air from outside the vehicle into the interior of the vehicle even when the windows are closed. Some of these ventilation systems have an air intake in the ram pressure area of the vehicle body and an air outlet in the negative pressure area to allow natural ventilation when the vehicle is running.

An example of the above-mentioned natural ventilation method will be explained with reference to Figures 4 and 5 f. A drafter hole 3 is formed in the bumper 2 gun area of the rafter end panel 1 as a vehicle body panel, and a drafter box is connected to the drafter hole 3 to communicate with the passenger compartment. 4 is attached. This drafter box 4 is provided with an exhaust port 6 equipped with a one-way valve 5, and when the vehicle is running, air flows through a passage 7 formed by the bumper 2 and the rear fender panel 1. The air inside the vehicle interior is efficiently discharged outside the vehicle from the exhaust port 6 by creating a negative pressure inside 4.In this type of structure, the drafter hole 3 can be opened by the bumper 2. There is an advantage that there is no need to provide a grill or the like in the hole 3.

Problem to be solved by the invention Whether or not there is sufficient ventilation is determined by the drafter box 4.
Please note that the negative pressure value inside the vehicle, in other words, depends on the flow of air passing through the passage 7.If the speed of air flow changes depending on the vehicle speed, the ventilation performance will change accordingly and will not be constant. points are pointed out.

In particular, when the vehicle speed is high, the negative pressure inside the drafter box 4 becomes high and sufficient ventilation can be performed, but when the vehicle speed is low, the amount of air sucked out decreases and ideal ventilation performance cannot be obtained. .

Therefore, the present invention provides a ventilation system that can obtain constant ideal ventilation performance without being affected by vehicle speed.

Means for Solving the Problem A drafter hole is formed in the bumper mounting area of the vehicle body panel, a drafter box is attached to the drafter hole, and a drafter box is installed in the drafter hole through a driving means in the passage formed by the vehicle body panel and the bumper. This is the arrangement of close-to-separate gap control Makoto.

When the vehicle speed is high, the clearance control vane is moved closer to the drafter hole by the Fi drive means to reduce the amount of air flowing between the drafter hole and the clearance control vane, and when the vehicle speed is low, - The clearance control vanes are moved away from the drafter holes via the drive device, increasing the amount of air flowing between the drafter holes and the clearance control vanes, and maintaining the inside of each drafter box at a predetermined negative pressure value to reduce the vehicle speed. Ensure ideal ventilation performance without being influenced by changes.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings, in which parts I that are the same as those of the conventional structure are designated by the same reference numerals.

In FIGS. 1 to 3, a drafter hole 3 is formed at the installation site of the rafter handle 1 and the bumper 2 as a single panel,
The basic structure, such as the fact that the drafter box 4 is attached to the drafter hole 3, is the same as that of the prior art.

Here, a pair of brackets 8 and 9 are attached to the opening edge of the drafter box 4 at the top and bottom, respectively, in the front and back direction, and the end numbers of the mutually parallel links 10 supported by the brackets 8 and 9 are as follows. Above rear y: r-interpanel 1
It supports the gap control blade 11 located in the passage 7 formed by the bumper 2 and the bumper 2.

and one of the links 10 above (2 in this example).
In the rear link 10), a lever 13 is integrally attached to the shaft 12 of the ninth link 10, passing through the upper wall of the drafter box 4.
It is attached to the upper wall of the drafter box 4 and locks the a-rad 15 of the electromagnetic actuator 14.

This actuator 14 is connected to a vehicle speed centimeter (not shown), and when the speed is single or high, the rod 15 is retracted.
When the vehicle speed is low, the rod 15 is extended. Incidentally, this actuator 14 may be one that causes the rod 15 to contract and extend using a motor or the like.

Therefore, the gap system that forms a four-bar link together with the drafter box 4 and the link 10? The i11 blade 11 is arranged so that it can move toward and away from the drafter hole 3 while moving in parallel with the actuator 141, and the actuator 14, lever 13 & hijink 10
constitutes the driving means.

The large arrow in the figure indicates the front side of the military vehicle.

According to the structure of the above embodiment, when the speed is single or higher than the set value, air flows sufficiently through the passage 7 as shown in FIG. Based on this, the actuator 14 is operated to retract the rod 15 by a predetermined stroke, bringing the gap control vane 11 close to the drafter hole 3 and reducing the amount of air flowing between the drafter hole 3 and the gap width control vane 11. Set negative pressure inside box 4 to ensure ideal ventilation performance.

-1. When the vehicle speed is lower than the set value, as shown in FIG. Then, the gap control blade 11 is separated from the drafter hole 3,
The drafter hole 3 and the gap control blade 11 are adjusted to the extent that the air flow velocity is small.
Drafter box 4
Ensure ideal ventilation performance by setting negative pressure inside.

In this way, the interior of the drafter box 4 is maintained at a constant negative pressure state regardless of the number of changes in vehicle speed, so that a constant amount of cabin air can be discharged from the exhaust port 6 of the drafter box 4. It becomes possible to perform ideal ventilation at all times.

Further, in this embodiment, since the links 10 are arranged parallel to each other, there is an advantage that the gap control blades 11 can be held in a position parallel to the drafter hole 3.

Effects of the Invention As described above, according to the present invention, gap control vanes are disposed within the passage formed by the vehicle body panel and the bumper and move toward and away from the drafter hole through the driving means, which is different from the conventional method. Unlike ventilation systems, the amount of ventilation air does not change with changes in vehicle speed, and therefore, the gap control blades can ensure ideal ventilation performance without being affected by vehicle speed, which is a great practical advantage. have an effect.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the present invention, with Figure 1 being a partial perspective view of a ventilation system, and Figures 2 and 3 being a cross-sectional view taken along line 1-11 in Figure 4 and 1-11 in Figure 4, respectively. Figure 4 is a partial side view of the rear of the vehicle, and Figure 5 is v-■ in Figure 4 of the conventional & technique.
FIG. 1... Rear fender panel (vehicle body panel), 2...
Pamba, 3... Drafter hole, 4... Drafter box, 7... Passage, 10... Link (driving means), 11
...Gap control blade, 13...Lever (driving means), 1
4...Actuator (driving means). 2 people Figure 2 Figure 3 Figure 4 t 7

Claims (1)

[Claims] (1) In a structure in which a drafter hole is formed in the bumper attachment part of the vehicle body panel, and a drafter box is attached to the drafter hole, the drafter hole is inserted into the passage formed by the vehicle body panel and the bumper through a driving means. A ventilation system characterized by having gap control vanes arranged close to and away from each other.