JP7080119B2 - Ventilation louver - Google Patents

Description

The present invention relates to a ventilation louver provided in a building, and relates to a ventilation louver for preventing inundation into the inside of a building by automatically blocking when a water level rise occurs around the building due to a flood or the like.

The louvers described in the following patent documents are known as louvers for preventing inundation due to storms such as typhoons.
For example, in the ventilation louver described in Patent Document 1, when a wind of a certain wind speed or higher is generated, the movable blades inside and outside are touched by the force of the wind to close the ventilation port portion and exhibit the inundation prevention function. ..
Further, in the louver described in Patent Document 2, a water replenishment structure composed of vertical blades arranged in a staggered pattern is configured to exert an inundation prevention function by receiving rainwater with the vertical blades.

Japanese Unexamined Patent Publication No. 2001-40951 Japanese Unexamined Patent Publication No. 2001-193367

However, the above-mentioned conventional louver could not exert the inundation prevention function against the rise of the water level around the building such as a flood due to the structural problems described below.
(1) In the ventilation louver described in Patent Document 1, inundation cannot be reliably prevented because the inner and outer blades may be urged in the direction of opening due to the water pressure accompanying the rise in water level.
(2) The louver described in Patent Document 2 only receives rainwater with vertical blades arranged in a staggered pattern, and does not have a function of blocking the ventilation space in the louver. Naturally, inundation occurs indoors.

Therefore, an object of the present invention is to provide a means capable of preventing inundation from a louver when the water level around the building rises due to an increase in water such as a flood.

The present invention, which has been made to solve the above problems, is a ventilation gallery for preventing the ingress of water at the time of flooding, and has a fixed blade having a ventilation space for ventilation and an outdoor side of the fixed blade. It is equipped with at least a movable blade, which is located in the air and is movable so as to block the ventilation space, and the movable blade provides the ventilation space when the water level around the outdoor garage reaches a predetermined height. It is characterized in that it operates so as to be closed , and after the ventilation space is closed, the blockage by the movable blade is not released due to the fluctuation of the water level .
Further, in the present invention, the movable blade may be configured to block the ventilation space by the water pressure of the water received by the movable blade.
Further, the present invention may further include a float that is interlocked with the water level around the outdoor louver, and may be configured to enable the movable blades to block the ventilation space even by the movement of the float.
Further , the present invention may be configured by providing a waterproof rubber on the contact surface with the opposing blades in at least one of the fixed blades and the movable blades.

According to the present invention, the effects described below are obtained.
(1) The movable blades automatically close the ventilation space in the fixed blades when the water level around the building reaches a predetermined height, so that flooding occurs when a flood occurs around the building. The prevention function can be surely exerted.
(2) The movable structure of the movable blade can be simplified by operating so as to block the ventilation space by the water pressure of the water received by the movable blade.
(3) By adjusting the position of the float by configuring the movable blades to block the ventilation space by moving the float linked to the water level around the outdoor garage, the movable blades can move even before they start receiving water pressure. The operation of closing the ventilation space by the blades can be started.
(4) After the ventilation space is blocked by the movable blades, the reliability of water ingress prevention can be improved by configuring the block to maintain the blockage even if the water level decreases.
(5) Watertightness can be improved by providing a waterproof rubber on the contact surface between the fixed blade and the movable blade. In particular, the water pressure of the water received by the movable spring puts the water-stopping rubber in a compacted state, which leads to further improvement in water-stopping.

Schematic side sectional view of the ventilation louver according to the first embodiment. The schematic perspective view which shows an example of the moving mechanism of a movable blade. Schematic side sectional view of the ventilation louver according to the second embodiment. The schematic diagram of the ventilation louver which concerns on Example 3. FIG.

Hereinafter, examples of the present invention will be described with reference to the drawings.

<1> Overall configuration As shown in FIG. 1, the ventilation louver A (hereinafter, also simply referred to as “louver”) according to the first embodiment has a fixing blade 20 and a fixing blade 20 inside a frame 10 which is a frame of the louver. It is configured to include at least the movable blade 30.
The details of each element will be described below.

<2> Fixed blade The fixed blade 20 is a member for forming a ventilation space 21 for ventilation in a louver.
In this embodiment, the fixed blades 20 have a substantially trapezoidal shape with the outdoor side as the short side when viewed from the side, and by arranging the fixed blades 20 at predetermined intervals in the vertical direction, each fixed blade 20 is arranged. The gap secured between 20 becomes a ventilation space 21 for ventilating the indoor side and the outdoor side.
The side ends of the fixing blades are fixed to the side sides of the frame 10.

<3> Movable blade The movable blade 30 is a member for making it possible to close the ventilation space 21 secured by the fixed blade 20.
In the present embodiment, the movable blade 30 has a substantially trapezoidal shape with the indoor side as the short side, and has a size capable of closing the ventilation space 21, and the fixed blades 20 are spaced vertically at predetermined intervals. The gap secured between the fixed blades 20 becomes the ventilation space 21 for ventilation.
The movable blade 30 is located on the outdoor side of the fixed blade 20, and is attached to the frame 10 so as to be movable in a direction approaching the fixed blade 20.
The movable blades 30 arranged at intervals in the vertical direction may be independently movable or may be interlocked and movable.

<3.1> Movement mechanism of the movable blade As the movement mechanism of the movable blade 30, various mechanisms can be adopted.
FIG. 2 shows an example of the moving mechanism of the movable blade 30.
In FIG. 2, sliding shafts are provided on both sides of the movable blade 30, and the protrusions are inserted into guide grooves 111 provided on the side sides 11 of the frame 10 constituting the frame of the louver to guide the guides. A mechanism is conceivable in which the protrusion slides in the groove 111 to limit the moving direction of the movable blade 30 in the front-rear direction (direction of approaching / separating from the fixed blade 20).

<3.2> Shape of the guide groove The shape of the guide groove 111 adopts an arbitrary shape (straight line, curved shape, hook shape, etc.) as long as it does not interfere with the closing operation of the ventilation space 21 by the movable blade 30. be able to.
With the shape of the guide groove 111, it is possible to set whether or not the movable blade 30 automatically returns to the initial position due to the decrease in the water level after the ventilation space 21 is once closed.
In FIG. 2, the shape of the guide groove 111 has a linear shape with the front-rear direction as the longitudinal direction. When this shape is adopted, it is expected that the movable blade 30 does not automatically return to the initial position due to the decrease in the water level after the ventilation space 21 is once closed.

<4> Operation during flooding As shown in Fig. 1 (b), when the water level around the building reaches a louver due to flooding or the like, the water pressure of the flooded water is received by the front side of the movable blade 30. Become. Due to this water pressure, the movable blade 30 retracts to the fixed blade 20 side, and the ventilation space 21 is blocked by the movable blade 30, so that water does not infiltrate through the louver.

<5> Operation after the rise of water has converged When the rise of water has converged and the water level around the garage has decreased, once the ventilation space 21 is closed by the movable blade 30, even if the water pressure received by the movable blade 30 decreases, the guide Since the movement locus of the movable blade 30 by the groove 111 is in the front-rear direction (horizontal direction), the movable blade 30 does not automatically return to the initial position.
Therefore, if the movable blade 30 is pulled back by human power or the like, the movable blade 30 can be returned to the initial position and the ventilation space 21 can be returned to the secured state again.

Although not shown, if the movable blade 30 is urged to the initial position side by an elastic body or the like, the effect of automatically restoring the movable blade 30 to the initial position after the convergence of the flood can be expected. However, it is necessary that the urging by the elastic body does not hinder the retracting operation of the movable blade 30 due to water pressure.

<1> Overall configuration The ventilation louver according to the second embodiment will be described with reference to FIG.
The difference from the ventilation louver according to the first embodiment is that the movable blade 30 is configured to be movable even by moving the float 50.
A rainwater basin 40 is provided below the frame 10, and a float 50 is placed on the rainwater basin 40. Further, the float 50 is provided with a connecting member 51 extending upward, and each movable blade 30 is connected to the connecting member 51.
Further, a shaft portion 31 and a guide groove 111 for limiting the moving direction of the movable blade 30 are provided on both side ends of the movable blade 30 and the side side 11 of the frame 10.
The guide groove 111 exhibits a curved locus so that the movable blade 30 also moves upward from the normal time to the time of rising water. Therefore, the movable blade 30 is arranged so as to move diagonally upward when transitioning from the normal time to the time of rising water.

<2> Operation during flooding As shown in Fig. 3 (b), when the water level around the building rises due to flooding or the like, water flows into the rainwater 40 and the float 50 floats by buoyancy.
In conjunction with the floating of the float 50, the movable blade 30 moves so as to block the ventilation space 21 between the fixed blades 20.
Therefore, according to the configuration according to the present embodiment, even when the rising water level does not reach the height at which the movable blade 30 can receive the water pressure, the water level rises to the height at which the float 50 can be raised. The work of closing the ventilation space 21 by the movable blade 30 can be started from the raised stage.
When the water level rises and the movable blade 30 reaches the stage of receiving water pressure, the movable blade 30 is pushed toward the fixed blade 20 by the water pressure and is more watertight, as in the structure according to the first embodiment. It acts to enhance sex.

<3> Operation after flooding converges When the flooding converges and the water level rises, the movable blade 30 does not receive water pressure, but the float 50 continues to rise as long as water remains in the rainwater 40, so the ventilation space 21 The blockage is maintained.
If no water remains in the rainwater 40, the float 50 descends and the movable blade 30 returns to the original position, so that the ventilation space 21 is secured again.
The above-mentioned operation after the water increase has converged may be arbitrarily designed as desired.

The ventilation louver according to the third embodiment will be described with reference to FIG.
In the ventilation louver according to the present embodiment, the water blocking rubber 60 may be provided on the fixed blade 20 and the movable blade 30.
Hereinafter, an example of arranging the waterproof rubber 60 will be described.

<1> A configuration in which a waterproof rubber is provided on the contact surface between the facing blades (FIG. 4A).
FIG. 4A is a side end view showing a contact surface between the fixed blade 20 and the movable blade 30, and water is stopped at the contact surface between the fixed blade 20 and the movable blade 30 and the blades facing each other. The configuration in which the rubber 60 is provided is shown.
Since the waterproof rubber 60 acts in a direction of compressing each other as the movable blades 30 under water pressure move, the watertightness can be further improved.

<2> A configuration in which a waterproof rubber is provided at the side end of the movable blade (FIG. 4 (b)).
FIG. 4B is a schematic perspective view showing the periphery of the contact portion between the frame 10 and the movable blade 30, and has a configuration in which the waterproof rubber 60 is provided at the side end of the movable blade 30 which is the contact surface with the frame 10. Shows.
Since the waterproof rubber 60 acts in the direction of compression with the frame 10 as the movable blade 30 under water pressure moves, the watertightness can be further improved.
The surface of the waterproof rubber 60 and the inside of the side 11 of the frame 10 may be provided with a taper to facilitate the movement of the movable blade 30.

A Ventilation louver 10 Frame 11 Side side 111 Guide groove 20 Fixed blade 21 Ventilation space 30 Movable blade 31 Shaft 40 Rainwater 50 Float 51 Connecting material 60 Water blocking rubber

Claims (4)

It is a ventilation louver to prevent the ingress of water when the water rises.
With fixed blades, which have a ventilation space for ventilation,
It is provided with at least a movable blade located on the outdoor side of the fixed blade and movable so as to block the ventilation space.
The movable blade operates so as to close the ventilation space when the water level around the outdoor louver reaches a predetermined height , and after the ventilation space is closed, the movement of the movable blade causes the movement of the movable blade. It is characterized by being configured so that it cannot be solved .
Ventilation louver. The movable blade closes the ventilation space due to the water pressure of the water received by the movable blade.
The ventilation louver according to claim 1. Further equipped with a float that works with the water level around the outdoor louver,
It is characterized in that the movable blade can block the ventilation space even by the movement of the float.
The ventilation louver according to claim 2. At least one of the fixed blade and the movable blade is characterized in that a water blocking rubber is provided on a contact surface with the opposing blade.
The ventilation louver according to any one of claims 1 to 3 .

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