JP3490958B2 - Natural ventilation equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention constantly opens the inner hole by elasticity in a cylindrical portion having an inner hole that communicates with the inside and outside, and tilts by the wind force when the wind flows from the outside. The present invention relates to a natural ventilation device provided with a valve body having an elastic membrane piece that closes the inner hole.

[0002]

2. Description of the Related Art As such a natural ventilation device, for example, the one in the Danish patent application advertised as DK-B-163605 is known. This is shown in Figure 6.
As schematically shown in Fig. 1, an inner hole a forming an air passage communicating with the inside and outside of the room
1 and a valve body b for opening and closing the inner hole a1 of the tubular portion a. The valve body b has the inner hole a.
One end edge of the elastic film piece d is tiltably supported by a vertical mounting plate piece c that is mounted inside 1.

Then, the elastic film piece d is pushed leftward and rightward by the wind force of the wind flowing from the outside to close the inner hole a1. This has an advantage that it is possible to prevent cold air, strong wind, or intrusion of rainwater due to strong wind from the outside.

[0004]

However, in the structure of this kind, when the inner hole a1 is closed, the elastic film piece d strongly abuts on the stopper e provided on the cylindrical portion a, so that it is called a patter. There is a problem that a comparatively large impact sound is generated and the quietness is impaired.

Therefore, the present invention is based on the provision of a cushioning material for cushioning the impact at the abutting portion of the cylindrical portion with which the elastic film piece abuts upon closing, to secure the above merit and to operate the elastic film piece. It is an object of the present invention to provide a natural ventilation device capable of reducing noise without impairing the property.

[0006]

In order to achieve the above object, the invention of claim 1 of the present application is arranged in an opening formed in an outer wall of a house and has one end communicating outdoors and the other end communicating indoors. It comprises a tubular portion having an inner hole forming an air passage, and a valve body for opening and closing the inner hole of the tubular portion, wherein the valve body is attached to the tubular portion and moves up and down in the inner hole. And a mounting plate piece that divides the inner hole into left and right inner hole portions by extending indoors and outdoors, and one end edge is tiltably supported by the mounting plate piece, and always follows the mounting plate piece by elasticity. Each inner hole is opened by means of a pair of elastic film pieces that close each inner hole by tilting the mounting plate piece at a substantially right angle by the inflow of wind from the outside, and the closing is performed. In this case, the number of contact parts of the cylindrical part with which the elastic film piece contacts is reduced. Some Ku and is also characterized in that a cushion material to mitigate the abutment impact.

Further, in the invention of claim 2, the mounting plate piece has a vertical partition part extending between the elastic film pieces toward the outdoor side, and the elastic film is provided on a side surface of the partition part when the opening is performed. It is characterized in that a convex portion formed of a cushioning material for separation is formed to form a small gap between the convex portion and the piece.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below.
This will be described together with the illustrated example. FIG. 1 is a vertical cross-sectional view of a natural ventilation device 1 of the present invention, FIG. 2 is a cross-sectional view thereof, and FIG. 3 is an exploded perspective view showing its main part.

1 and 2, a natural ventilation device 1 of this embodiment has an air passage 3 which is arranged in an opening 2 formed in an outer wall W of a house and has one end communicating outdoors and the other end communicating indoors. A cylindrical portion 4 having an inner hole 4A formed therein and a valve body 5 for opening and closing the inner hole 4A of the cylindrical portion 4 are provided.

In this embodiment, the case where the tubular portion 4 penetrates through the opening 2 and is detachably arranged in the louver pipe 6 which is a main portion of the air passage 3 is exemplified. An outdoor grill 9 and an indoor grill 10 having well-known configurations are provided on the outdoor side and the indoor side of the louver pipe 6, respectively.

Here, the outer wall W is formed by using an integrally portable outer wall panel in this example. The outer wall panel has a peripheral frame formed by joining an outer frame material made of wood or steel in a rectangular shape, and the wall members 51o, 51i are left on the outdoor side surface and the indoor side surface of the peripheral frame with the opening 2 left. Is attached. The inner peripheral surface of the opening 2 is surrounded by a wooden base frame 52, for example.

Next, the louver pipe 6 is inserted into the opening 2 and extends continuously between the indoor surface Si and the outdoor surface So of the outer wall W, which is a cylindrical pipe base 11 in this example.
And a flange piece 12 provided at the indoor end of the pipe base body 11 and protruding outward in the radial direction from the outer periphery thereof. Then, by fixing the flange piece 12 to the wall surface member 51i with a screw or the like, the louver pipe 6 is firmly attached to the outer wall W.

The pipe base 11 has a large-diameter portion 11A on the indoor side and a small-diameter portion 11C connected to the large-diameter portion 11A on the outdoor side via a step portion 11B. A ring-shaped draining piece 13 is provided so as to extend radially inward beyond the inner peripheral surface of the small diameter portion C.

Further, a holding cylinder 14 which is inserted from the indoor side and fixed to the indoor surface Si is arranged in the large diameter portion 11A, and the step portion 1 between the holding cylinder 14 and the louver pipe 6 is arranged.
The tubular portion 4 of the natural ventilation device 1 is detachably retained between the tubular portion 4 and the 1B.

In this embodiment, the tubular portion 4 has a cylindrical body portion 15 having the inner hole 4A, as shown in FIG.
A flange portion 16 is provided at the outdoor side end of the body portion main body 15 and projects outward in the radial direction from the outer periphery thereof. And
The collar portion 16 is sandwiched between the outdoor side end of the holding cylinder 14 and the step portion 11B, and the body portion 15 is formed.
However, the holding cylinder 14 is inserted into the holding hole 14A provided at the outdoor side end of the holding cylinder 14, so that the holding cylinder 14 is made into
Is held concentrically with.

Incidentally, the outdoor side end surface 16S of the collar portion 16
In this case, for example, a pair of anti-rotation ribs 19 that are engaged with the inner peripheral edge of the draining piece 13 to prevent the holding cylinder 14 from rotating are projected in parallel with each other and at a small height. Also body part 15
An insect-proof net 34 is stretched on the indoor side end of the.

A mounting portion 20 for mounting the valve body 5 is formed on the tubular portion 4. In this example, the main body 1
Reference numeral 5 denotes a vertical frame piece 21 that vertically traverses the inside of the inner hole 4A through the center line J, and the valve body 5 can be detachably fitted to the outdoor side end of the vertical frame piece 21. The groove 21A is formed as the mounting portion 20.

Next, the valve body 5 is attached to the mounting portion 20 and extends vertically inside and outside the inner hole 4A so that the inner hole 4A is formed into inner hole portions A1 and A1 on both left and right sides. It is composed of a mounting plate piece 22 to be divided, and a pair of left and right elastic film pieces 23 whose one edge is tiltably supported by the mounting plate piece 22 and which opens and closes each inner hole portion A1.

In the present example, the elastic film pieces 23, 23 are each made of a semicircular arc-shaped film material.
A high tear type silicone rubber having a size of 6 mm ± 0.1 mm is preferable from the viewpoint of strength, durability, weather resistance, elastic force and the like. As the elastic film pieces 23, 23, for example, one horizontally long oval film material is used, and the elastic film pieces 23 are formed by the folded portions on the left and right sides by folding back at the central portion into a U shape. You can also

Then, by inserting the mounting plate piece 22 between the elastic film pieces 23, 23 into the mounting groove 21A, one end edge of each elastic film piece 23 is enlarged in FIG. As shown, the mounting plate piece 22 is sandwiched between the mounting plate piece 22 and the groove wall 25 of the mounting groove 21A, and is tiltably held on both sides around a corner 25E of the groove wall 25. The elastic film piece 23 when tilted
In order to improve the durability of the
Is preferably 3.0 mm or less, more preferably 2.0 mm or less, and further preferably 1.0 mm or less.

With this insertion structure, the valve body 5 can be easily attached to the tubular portion 4 with one touch.

Here, as shown in FIG. 2, the elastic film piece 23 is biased by the elastic force in the direction along the mounting plate piece 22. Therefore, each inner hole A1 is normally opened, and when a wind force larger than the elastic force flows in from the outside, the inner hole A1 is tilted in a direction substantially perpendicular to the mounting plate piece 22. Can be closed automatically. In the figure, the open state Y
1 is shown by a thick solid line, and the closed state Y2 is shown by a thin dashed line.

The mounting plate piece 22 has a mounting groove 21A.
It is provided with an inserting portion 22A into the inside and a vertical partition portion 22B which is continuous with the inserting portion 22A and extends between the elastic film pieces 23, 23 toward the outdoor side.

On the side surface of the insertion portion 22A, a projection 27 is fitted which is fitted into a small hole 26 provided in the elastic film piece 23 and prevents the elastic film piece 23 from being displaced. In addition, in the mounting groove 21A, an escape portion 29 for escaping the protrusion 27 is provided.
Is recessed.

Further, the partition portion 22B functions as a stopper in the open state Y1 of the elastic film piece 23,
Each elastic film piece 23 is prevented from tilting to the other side beyond the partition portion 22B, and the open state Y1 is stably maintained.

In the present embodiment, the side surface of the partition portion 22B is provided with a separating projection 30 which forms a small gap G (shown in FIG. 2) between the partition 22B and the elastic film piece 23 in the open state Y1. ing. The convex portion 30 is formed by adhering a cushion material 30A, whereby the partition portion 2
An air pocket is formed between the elastic film piece 23 and the elastic film piece 23 to prevent the elastic film piece 23 from adhering (adsorbing) to the partition portion 22B and securing a wind receiving surface. As a result, the tilting of the elastic film piece 23 from the open state Y1 can be started smoothly, and the opening / closing operation can be smoothly performed.

Further, as a stopper in the closed state Y2 of the elastic film piece 23, the inner hole 4A is formed in the cylindrical portion 4.
A frame piece 31 is provided that extends across the inside. In this example, the frame pieces 31 are arranged radially outward from the center line J, but as shown in FIGS. 5A and 5B, for example. The vertical frame piece 21 may be arranged vertically, and the vertical frame piece 21 may be horizontally arranged.

The frame piece 31 has an outdoor end surface 31S.
Are substantially aligned with the outdoor end surface 16S of the collar portion 16, and the outdoor end surface 31S forms a contact portion 32 that contacts the elastic film piece 23 in the closed state Y2.

At least a part of the contact portion 32 is provided with a cushion material 33 for absorbing the impact of the contact. As a result, the rattling sound at the time of contact can be reduced and the quietness can be improved.

The cushion material 33 is formed of a porous rubber sheet such as sponge rubber having a high elasticity and an excellent shock absorption property, and is folded back in a U shape on the outdoor end surface 31S of the frame piece 31. Will be attached. Especially weather resistance,
EPDM (ethylene propylene rubber) sponge rubber can be preferably used from the viewpoint of cold resistance, elasticity and the like.

The cushion member 30 forming the convex portion 30
Similarly to the cushion material 33, sponge rubber such as EPDM can be preferably used for A, and the cushion material 30 is
Partition part 22 generated when the elastic film piece 23 is opened
The impact with B is absorbed and absorbed, and the impact sound is reduced.

[0032]

As described above, according to the present invention, since the cushioning material for cushioning the impact is provided at the abutting portion of the cylindrical portion with which the elastic film piece abuts upon closing, the operability of the elastic film piece is provided. The noise can be greatly reduced without damaging the noise.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a natural ventilation device of the present invention.

FIG. 2 is a cross sectional view thereof.

FIG. 3 is an exploded perspective view showing a main part thereof.

FIG. 4 is a cross-sectional view showing an attached state of an elastic film piece.

5A and 5B are diagrams showing another embodiment of the contact portion.

FIG. 6 is a perspective view illustrating a conventional technique.

[Explanation of symbols]

2 openings 3 air passages 4 tubular part 4A inner hole 5 valve body 22 Mounting plate piece 22B partition 23 Elastic Membrane Piece 30 ribs 32 abutting part 33 cushion material A1 inner hole G small gap

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-203544 (JP, A) JP-A-9-49657 (JP, A) French patent application publication 2656401 (FR, A 1) (58) Search Areas (Int.Cl. ⁷ , DB name) F24F ^7/ 04-7/06

Claims (2)

(57) [Claims] 1. A tubular portion having an inner hole which is arranged in an opening formed in an outer wall of a house and has an air passage whose one end communicates outdoors and the other end communicates indoors, and the inner portion of the tubular part. A valve body for opening and closing a hole, wherein the valve body is attached to the cylindrical portion and extends vertically inside and outside the inner hole to divide the inner hole into left and right inner hole portions. A mounting plate piece, and one end edge of the mounting plate piece is tiltably supported by the mounting plate piece, and the inner holes are normally opened by elastically extending along the mounting plate piece, and the mounting plate piece is opened by the inflow of wind from the outdoors. At least a part of the contact portion of the tubular portion, which is formed by a pair of elastic film pieces that close each inner hole portion by tilting at a substantially right angle, and that the elastic film piece contacts when closing. to, providing a cushion material to relax the abutting impact and, Elastic film piece has one end edge, said mounting plate piece
It is sandwiched between the mounting wall formed in the tubular portion and the groove wall.
A natural ventilation device characterized by: 2. The natural ventilation device according to claim 1, wherein a corner of the groove wall of the mounting groove is formed by an arc .