JPH04168Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a ventilation opening device that is attached to the eaves, etc.

BACKGROUND TECHNOLOGY Conventionally, as this type of ventilation port device, a hood that covers an opening in a wall surface or a shutter-like device that is fitted and fixed into the opening has been installed.

Problems that the invention aims to solve However, even though these vent devices can provide ventilation, they cannot prevent rainwater from entering along with outside air.
Furthermore, in the event of a fire, it is unavoidable that flames will spread outdoors.

Means for Solving the Problems In the ventilation opening device according to the present invention, a plurality of blades are vertically spaced apart from each other to form a ventilation path inside a substantially quadrilateral frame body, and are arranged substantially horizontally. From the plate surface of each of the slats, a drain plate portion is protruded upward and downward at a predetermined rising angle at a distance from each other, and crosses the ventilation path.
One end of these slats is rotatably supported by a frame and the other end is rotatably supported by a movable frame, and the movable frame is pressed by a spring so that it can move downward until the draining plates of each slat come into contact with each other at the top and bottom. At the same time, this movable frame is locked with a heat-meltable stopper to hold each vane in a substantially horizontal position.

Function: With this ventilation vent device, ventilation can be carried out between indoors and outdoors through a ventilation path formed by multiple vanes, and even if rainwater enters during the ventilation, it can enter the indoors through the drain plate. Furthermore, in the event of a fire, the stopper melts and the movable frame moves downward under spring pressure, causing the vertically protruding vanes to come into contact with each other and cut off the ventilation path, allowing flames to spread outside. You will be able to prevent this from happening.

Embodiments The following description will be made with reference to the accompanying drawings.

This ventilation opening device is formed using a thin metal plate, and as shown in Fig. 1, it has a substantially quadrilateral frame 1
The main parts are a plurality of blade plates 2, 2, .

The frame 1 has an outer dimension approximately corresponding to an opening formed in a wall such as an eave, and is formed into a frame edge shape with an open inner side and side plates having a width corresponding to the thickness of the wall. The vane plates 2, 2... have the same cross-sectional shape, and the draining plate parts 2a..., 2b... which stand vertically at a predetermined distance from each other at a distance from each other in the longitudinal direction toward the back of the drawing. It is bent and molded along the These vanes 2, 2, . . . are arranged substantially horizontally inside the frame 1 with vertical intervals apart, and each interval forms a ventilation passage X. In addition, the draining plate portions 2a..., 2b... generate air flow in a meandering manner, and the movable frame 3 (described later)
It is erected to approximately the middle of the ventilation path X with a size that allows the upper and lower sides to come into contact with each other by the downward movement of the airflow path X, and is positioned in a direction that crosses the ventilation path X. This draining plate part 2a...,
Each blade plate 2, 2... having 2b... has its longitudinal end bent into a cylindrical shape, and as shown in FIG. 2, one end 2c... is the frame 1 and the other end 2d... The movable frame 3 supports the cylindrical portions so as to be rotatable. Its pivot is an arcuate notch 1a formed in the open flange of the frame 1 and in the channel side of the movable frame 3.
..., 3a... can be constructed by fitting and locking each end portion 2c..., 2d... formed into a cylindrical shape of the vane plates 2, 2.... A movable frame 3 that pivotally supports the one end portions 2b has a compression spring 4 fitted into an upper notch, and is pressed by the spring 4 so as to be able to move downward. The movable frame 3 also has a heat-meltable stopper 6 attached to a bracket plate 5 projecting downward from the top of the frame body 1.
By locking with, usually each vane plate 2, 2...
is held in a substantially horizontal position. A solder rod can be used as the stopper 6, and the ring portion 3 is formed by protruding the solder rod from the mating position of the movable frame 3 and the bracket plate 5.
If the movable frame 3 is inserted through the compression springs 4 and 5a, it is possible to lock the movable frame 3 in a fixed position.

It should be noted that each of the vanes 2, 2, . . . can also be arranged diagonally, with the end side pivoted by the movable frame 3 being positioned on a downward slope.

The ventilation opening device configured in this manner is installed in an opening formed in a wall surface such as an eaves, with the side on which the end portions 2c..., 2d... of each blade board 2, 2... are pivotally supported by the frame 1 located on the indoor side. It can be installed by fitting it into the The ventilation vent device transports indoor and outdoor air to each vane plate 2, 2...
. . , 2. Even if outside air with rainwater flows in during rainy weather, the drainage plates 2a...
Since rainwater comes into contact with and adheres to the upper and lower surfaces of b... and the vanes 2, 2..., it does not penetrate into the indoor side. In addition, in the event of a fire, the stopper 6 will melt due to the flame heat and the movable frame 3 will be removed from the bracket plate 5 as shown in Figure 3, and at the same time the compression spring 4 will expand and the movable frame 3 will move downward. let Accordingly, each of the vanes 2, 2... rotates and tilts with the support of the frame body 1 and the movable frame 3, and the upper and lower drainage plate parts 2a..., 2b... contact each other, thereby blocking the ventilation path X. to prevent flames from spreading outside. Since this state is fixedly maintained by the expansion of the compression spring 4, a situation in which the blade plates 2, 2... are not stirred by the flames and flailed around does not occur.

In the above-described embodiment, the movable frame 3 is arranged outdoors, but it can also be assembled indoors so that the inner ends of the vanes 2, 2, . . . can be moved downward.

Effects of the Invention As described above, according to the ventilation device according to the present invention, it is possible to prevent the intrusion of rainwater and the outflow of flame with a simple mechanism.

[Brief explanation of the drawing]

Figure 1a is a front view of the ventilation port device according to the present invention;
Fig. 1b is a cross-sectional view taken along the line A-A in Fig. 1, Fig. 1c is a rear view of the device, Fig. 2 is a partially enlarged sectional view of the device, and Fig. 3 is an explanatory diagram of the operation of the device. It is. 1... Frame body, 2, 2... Feather plate, 2a..., 2b
...Draining plate part, 2c..., 2d... End part of the vane plate,
3...Movable frame, 4...Press spring, 6...Stopper.

Claims (1)

[Scope of utility model registration request] A plurality of slats are arranged approximately horizontally inside a frame having a substantially quadrilateral shape and are spaced apart vertically to form a ventilation path, and each slat is spaced apart from each other from the surface of the slats with a predetermined vertical rise. Draining plate portions extending across the ventilation passage are protruded, one end of these blades is rotatably supported by a frame body, and the other end is rotatably supported by a movable frame, and the draining plate portion of each blade plate is vertically supported by the movable frame. A ventilation opening device characterized in that each blade plate is held in a substantially horizontal position by being pressed by a spring so as to be able to move downward until they come into contact with each other, and by locking the movable frame with a heat-meltable stopper.