JPS60161214A - Cabin pressure regulator - Google Patents

Abstract

PURPOSE:To cut off draft by providing a magnet for preventing roll up of shutter between the underside section of the circumferential edge of opening of frame and shutter. CONSTITUTION:Normally, a shutter 25 will close the opening 24 of frame 20 to cut off draft while upon increase of cabin pressure due to closing of door, the shutter 25 is pushed open to discharge the pressure. Since magnets 30, 31 are provided between the lower end section of shutter 25 and the underside edge of opening 24 of frame 20, the shutter 25 is stretched downward by means of magnets 30, 31 to prevent roll up. Consequently, the opening 24 is closed reliably by the shutter 25 to cut off draft.

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION The present invention relates to a vehicle interior pressure regulating device for releasing pressure generated within a vehicle interior to the outside.

PRIOR ART In general, the interior of an automobile is constructed to be in a substantially airtight state. Therefore, when the door is strongly closed with the door windshield closed, the pressure inside the vehicle increases instantaneously, causing pressure on the occupants. It makes you feel uncomfortable. Therefore, there is a device in which the door is provided with a vehicle interior pressure regulating device that communicates the interior and exterior of the vehicle interior, and the increased vehicle interior pressure is directed to the outside (in two channels. For example, as shown in FIG. As shown in FIG.
In addition, an escape hole 4 is provided at the end of the door 2 in the longitudinal direction of the vehicle.
The pressure inside the vehicle is released from the opening 3, through the space between the door inner and the actuator panel, and outward from the relief hole 4. By the way, a shutter is provided on the inward side of the door of the opening 3, and this shutter allows air to flow from the passenger compartment to the outside, but prevents air from flowing in the opposite direction, thereby preventing drafts from entering the passenger compartment. Make sure it doesn't get too crowded. FIG. 2 shows a cross section of a conventional shutter section, which includes a frame 10 and a shutter 12 attached to the upper edge of the opening 11 on the outside of the vehicle provided in the center of the frame 10. are doing.

The frame 10 is attached to a sealing screen 14 attached to the inner panel 13 inside the vehicle, and is inserted into a space 17 between the inner panel 13 and the actor panel 16 through an opening 15 formed in the inner panel 13. 18 is a trim, and a grille 19 is attached to the opening 3 formed in the trim 18, and the air released from the opening 3 as the pressure inside the vehicle increases pushes the shutter 12. It opens and reaches the space 17, and is then discharged outward from the escape hole 4 mentioned above.

Incidentally, the shutter 12 is formed in the shape of a flexible film of soft synthetic resin or the like, and closes the same edge of the opening 11 of the frame 10 by its own weight. but,
When the shutter 12 is used for many years, the underlined portion of the shutter 12 curls up as shown by the two-dot chain line in FIG. I end up.

Therefore, there was a problem in that drafts entered the vehicle interior through this gap.

Purpose of the Invention The present invention solves the problems of the conventional art by preventing the shutter from flipping up and preventing drafts from entering the vehicle interior.
To provide a vehicle interior pressure regulating device which prevents two people from getting into a vehicle.

Structure of the Invention In order to achieve the above object, the present invention provides an opening formed in the inner panel of the door (- a frame to which it is attached;
A flexible film-like shutter is attached to the upper edge C2 of the opening provided in the frame on the vehicle outer side to close the opening, and when the door is closed, the shutter opens and the pressure inside the vehicle is reduced. In a vehicle interior pressure regulating device in which pressure is released to the outside through a space between a door inner and an actor panel and a relief hole that communicates this space with the outside, the lower side of the periphery of the opening of the frame A magnet is provided between the shutter and the shutter to prevent the shutter from flipping up.

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

That is, FIGS. 3 and 4 show an embodiment of the shutter portion of the vehicle interior pressure regulating device of the present invention, where 2o is a frame;
Center part I: opening 21a of inner panel 21 J: protrusion 22 to be fitted protrudes outward from the vehicle, and
The peripheral edge of the frame 20 is attached to the sealing screen 23 by being heat-sealed. An opening 24 is formed in the bottom surface of the protrusion 22, and this opening 24
A flexible film-like shutter 25 is heat-sealed to the upper edge of the outer side of the vehicle. The shutter 25 is formed along the circumferential edge shape of the opening 24, and the circumferential edge of the shutter 25 can be brought into close contact with the circumferential edge of the opening 24. The opening 24 is tilted downward (2), and thus toward the outside of the vehicle, so that the opening 24 can be reliably closed by the shutter 25.

Here, in the present invention, the first magnet 30 is attached to the back side of the lower edge of the opening 24 of the frame 20 (on the inside of the vehicle interior), and also corresponds to the first magnet 30 at the lower end of the shutter 25. A second magnet 31 with a different polarity from the first magnet 30 is attached from the outside of the vehicle at the position where the first magnet 30 is placed. Second magnet (30
, 31), the lower end of the shirt shirt 25 is connected to the opening 24.
This is so that it will be absorbed.

With the above configuration, (1) during normal operation (2), the shutter 25 closes the opening 24 of the frame 20, as shown by the solid line in FIG. When the shutter 25 rises, the shutter 25 is pushed open as shown by the two-dot chain line in the same figure, and the pressure is released to the outside. Since the first and second magnets 30 and 31 are provided between the
The shutter 25 is the first shutter. The shutter 2 is tensioned downward by the second magnets 30 and 31 to prevent it from turning up.
5 ensures that the opening 24 is closed. In addition, the above-mentioned No. 1. The second magnets 30 and 31 are
It goes without saying that the magnetic force must be set so as not to prevent the shutter 25 from opening.

By the way, in the above-mentioned embodiment I, the first . Although the second magnets 30 and 31 are shown, the present invention is not limited to this. Second magnet 3
One of 0 and 31 may be replaced with a magnetically sensitive material such as an iron plate, and the same effect as in the embodiment described above can be obtained.

Effects of the Invention As explained above, in the vehicle interior pressure regulating device of the present invention, there is a gap d between the lower end of the flexible film-like shutter that opens and closes the opening of the frame and the lower end of the periphery of the opening: Since the magnet is provided, the magnet f prevents the lower end of the shutter from turning up. Therefore, in the normal condition, the shutter is reliably closed, and drafts are prevented from entering the vehicle interior, which is an excellent effect.

[Brief explanation of drawings]

Figure 1 is an external perspective view of a vehicle interior pressure regulator with door C split into two parts, and Figure 2 is an enlarged view of a conventional single interior pressure regulator taken in section from the position corresponding to the line ■-■ in Figure 1. cross section,
FIG. 3 is a perspective view showing an embodiment of the shutter portion used in the vehicle interior pressure regulating device of the present invention, and FIG.
It is a sectional view taken from the V-ff line.

Claims (1)

[Claims] (1) A frame attached to an opening formed in the inner panel of the door, and a flexible membrane-like shutter attached to the upper edge of the opening on the outside of the vehicle provided in the frame to close the opening. When the door is closed, the shutter opens and the pressure inside the vehicle is released to the outside through a space between the inner and acter panels of the door and a relief hole that communicates this space with the outside. What is claimed is: 1. A vehicle interior pressure regulating device, characterized in that a magnet is provided between the lower side of the periphery of the opening of the frame and the shutter to prevent the shutter from flipping up.