JPH045363Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a ventilation system for vehicles such as automobiles.

BACKGROUND ART As shown in FIGS. 10 and 11, a conventional vehicle ventilation system has a lattice at the tapered opening on the inside air side of a horizontal prismatic cylindrical body 21 consisting of a top wall, a bottom wall, and both side walls. A frame 22 is provided, and the upper edge of a thin film bulb 23 is fixed above the inside of the rectangular cylindrical body of the lattice frame 22.

Problems to be solved by this invention In this conventional vehicle ventilation system, the thin film valve 23
is extremely thin and weighs very little, so when the vehicle door is suddenly closed, a large wind pressure is applied to the thin film valve 23, causing the thin film valve 23 to spring up to the inside of the planar top wall 21' of the rectangular cylindrical body 21. I get tired.
At this time, if water droplets from outside the vehicle adhere to the surface of the thin film valve 23 or the inside of the top wall 21' of the square cylindrical body 21, the thin film valve 23 and the square cylindrical body 21
For reasons such as creating a vacuum state between the inside of the top wall 21' of the thin film valve 2 as shown in FIG.
3 was in close contact with the inside of the top wall 21' of the rectangular cylindrical body 21 and did not return to its original state.

In order to support the weight of the thin film bulb and the weight of the prismatic cylindrical body, the thin film bulb that was thrown up by the large wind pressure hit the top wall 21' relatively strongly, and the top of the prismatic cylindrical body aged due to aging. wall 2
The thickness of the top wall 21' must be thick enough to have sufficient strength in order to prevent damage such as cracks to the top wall 1' and also because there is no reinforcement rib on the top wall 21'. There was a drawback.

This invention solves the above-mentioned drawbacks of conventional vehicle ventilation systems, such as the fact that the thin film valve does not come into close contact with the inside of the top wall of the prismatic cylindrical body and returns to its original shape due to the flip-up, and the weight of the valve and the prismatic shape of the cylindrical body. To support the weight of the body (main body), to prevent damage such as cracks from occurring on the top wall of the main body that has aged due to changes over time, to reinforce the top wall that makes up the rectangular cylindrical body, and to strengthen the top wall as much as possible. The purpose is to have sufficient strength even when made thin, to be able to easily mold a prismatic cylindrical body with an injection mold, and to be easier to release from the mold.

Means for Solving the Problems The vehicle ventilation system of this invention has a ventilator installed inside the top wall constituting the rectangular cylindrical body, which is continuous from one end of the top wall to the other end in a direction perpendicular to the open air side opening. A large number of reinforcing ridges are formed in parallel by injection molding.

Function: The vehicle ventilation system of this invention injects reinforcing ridges on the inside of the top wall constituting a rectangular cylindrical body, which are continuous from one end of the top wall to the other in a direction perpendicular to the opening on the outside air side. By forming many parallel pieces by molding, the thin film bulb can be flipped up to the inside of the top wall due to large wind pressure from inside the car, and even if water droplets adhere to the surface of the thin film bulb or the inside of the top wall of the rectangular cylindrical body, the thin film will remain intact. The valve does not fit inside the top wall.

The continuous reinforcing ridges serve to reinforce the top wall and the entire rectangular cylindrical body (main body), and even if a thin film valve that is thrown up by large wind pressure hits the top wall relatively strongly, does not cause damage such as cracks. It also has sufficient strength to support the weight of the valve even if the top wall is made thin. In addition, in order to continuously form a large number of parallel reinforcing ridges in a direction perpendicular to the open air side opening of the prismatic cylindrical body, the prismatic cylindrical body is undercut when molded using an injection mold. Therefore, it can be easily molded and released without using a slide mechanism.

Examples Next, examples of the vehicle ventilation system of this invention will be described.

As shown in FIGS. 1 to 4, the rectangular cylindrical body 1 of the vehicle ventilation system is horizontal and has the shape of an enclosing wall consisting of a top wall, a bottom wall, and both side walls. A large number of reinforcing ridges 3 are formed in parallel inside the wall 2 and are continuous from one end of the top wall 2 to the other end in a direction perpendicular to the open air side opening 6 of the square cylindrical body 1. These many parallel reinforcing protrusions 3 are formed into one piece with the rectangular cylindrical body 1 using injection molds 4 and 5, as shown in FIG.

A mounting flange 7 is provided at one open air side opening 6 of the rectangular cylindrical body 1 . A lattice frame 9 is provided in the other internal air side tapered opening 8 of the square cylindrical body 1.

A ventilation system for a vehicle is shown in which the upper edge of a thin film valve 10 is locked and fixed above the inside of the rectangular cylindrical body of the lattice frame 9 by a locking tool 11 and a locking press plate 12.

The vehicle ventilation system of this embodiment has an opening on the inside of the top wall 2 of the rectangular cylindrical body 1 at right angles to the outside air side opening.
In addition, since a large number of reinforcing protrusions 3 having a triangular cross section are formed in parallel, even if the thin film bulb 10 is flipped up as shown in FIGS. The thin-film valve 10 can return to its original state by its own weight, and as in this embodiment, a large number of parallel reinforcing protrusions 3 with a triangular cross section are provided.
can be easily molded into the open air side opening 6 of the square cylindrical body 1 using an injection mold. Note that the lattice frame may have a frame either vertically or horizontally.

The ones shown in FIGS. 6 to 9 are parallel protrusions of different shapes, and the parallel protrusions 13 in FIG.
The parallel protrusions 14 in Fig. 7 are square in cross-section, the parallel protrusions 15 in Fig. 8 are U-shaped in cross-section, and the parallel protrusions 16 in Fig. 9 are trapezoidal in cross-section. be.

Effects of the invention The vehicle ventilation system of this invention injects reinforcing ridges that are continuous from one end of the top wall to the other end in a direction perpendicular to the outside air side opening on the inside of the top wall constituting the rectangular cylindrical body. Since many parallel shapes are formed by molding, even if water droplets adhere to the surface of the thin film bulb or the inside of the top wall of the rectangular cylindrical body, and the thin film bulb is thrown up by large wind pressure, the thin film bulb will still maintain its rectangular cylindrical shape. It does not stick to the inside of the top wall of the body and can return to its original position.

In addition, the continuous reinforcing ridges can sufficiently support the weight of the bulb and the weight of the rectangular cylindrical body, and also serve to reinforce the top wall, so the thin film bulb that is thrown up by the large wind pressure is relatively stable. This has the effect that even if the top wall is hit hard, there is no risk of damage such as cracks, and the thickness of the top wall can be reduced. Furthermore, when molding a prismatic cylindrical body using an injection mold, the prismatic cylindrical body does not become undercut, and therefore the prismatic cylindrical body can be easily molded without using a slide mechanism. and can be easily released from the mold.

[Brief explanation of the drawing]

Figures 1 and 2 are sectional views of the invented product, Figure 3 is an enlarged AA sectional view of Figure 2, Figure 4 is a perspective view, Figure 5 is a sectional view during molding, and Figure 6. 9 to 9 are enlarged sectional views of parts of different prismatic cylindrical bodies, and FIGS. 10 and 11 are sectional views of conventional products. 1 is a rectangular cylindrical body, 2 is a top wall, 3 is a reinforcing ridge, 6 is an open air side opening, and 10 is a thin film valve.

Claims (1)

[Scope of utility model registration request] A horizontal rectangular cylindrical body consisting of a top wall, a bottom wall, and both side walls is provided with a mounting flange at one opening on the outside air side and a lattice frame at the other tapered opening on the inside air side. In the vehicle ventilation system, the upper edge of the thin film valve is fixed above the lattice frame inside the cylindrical body, and the valve is caused to hang down by its own weight to close the tapered opening. For a vehicle, a large number of parallel reinforcing ridges are formed by injection molding on the inside of the constituting top wall, and are continuous from one end of the top wall to the other end in a direction perpendicular to the outside air side opening. Ventilation equipment.