JPH0447550Y2 - - Google Patents

Description

[Detailed explanation of the idea] 1 Purpose of the invention The present invention relates to a ventilation opening for a building.

Traditionally, in buildings made of reinforced concrete,
In the event of a fire, a thermostat installed inside the vent detects heat and operates a damper to close the vent. Since the damper is installed so that it can be opened and closed via a bullet on a pivot installed in the diameter of the cylinder, the mounting structure of the damper is complicated and there is a risk that the closing action may not always go smoothly. Their production costs were also relatively high.

Therefore, an object of the present invention is to provide a new ventilation opening that eliminates the drawbacks of the conventional products.

2. Structure of the invention The structure and operation of the invention will be explained with reference to the embodiments shown in the drawings.

Reference numeral 1 denotes a cylindrical body disposed inside the wall of a building, and the length of this cylindrical body should just be enough to allow the eccentric disc portion of the actuating plate 11 (described later) to stand vertically. Therefore, it only needs to be about half the length of conventional products. The flange portion 2 of this cylindrical body 1 is fixed to the inside of the flange portion 4 of a cover body 3 disposed on the outside of a building wall. Reference numeral 5 denotes a mesh plate provided at the opening connecting portion on the cylinder side of the cover body 3, and a louver 6 is provided on the outside in contact with this mesh plate. 7 is a mounting piece provided around the outer periphery of the cylindrical body 1;
8 is an opening 9 formed on the outer end surface of the cylinder 1.
10 is a pivot installed at an appropriate position eccentric in the direction opposite to the closing plate from the maximum diameter part of the opening 9 of the cylindrical body. Leg pieces 12, 12 provided inside the actuating plate 11 that opens and closes on the portion 9 are pivotally attached. Further, extension bombs 13, 13 are provided on this pivot shaft 8, with one side placed on the closing plate 6 side and the other placed on the operating plate 9 side. The shape of the actuating plate 11 is configured to match the shape of the opening 9, and the closing plate 8 side has a straight outer end 11a that matches the cut line end 8' of the closing plate,
The circumferential side of the opening 9 forms a circular peripheral edge 11b. Further, when the actuating plate 11 rotates to close, the outer end 11a on the closing plate 8 side
comes to be in contact with the outside of the cut line end 8' of the closing plate, and on the circumferential side of the opening 9, the peripheral edge 1
1b comes to be in contact with the inside of the horizontal flange 14 around the opening 9. The peripheral edge of the actuating plate 11 is provided with notches 15, 15 in the vicinity of the pivot shaft 8 eccentric to the opening 9. Reference numeral 16 denotes a protrusion provided perpendicularly toward the center from a part of the opening on the cover body 3 side of the cylinder 1, and a protrusion 17 is provided on this protrusion. 18
19 is a protrusion provided on a part of the actuating plate 11 facing this protruding piece 16 (the peripheral edge in the center radial direction of the actuating plate in the drawing); The thermostat has the through hole 20 at the end of the thermostat latched, and the through hole 20 at the other end of the thermostat is latched.
0' hooks one end bent portion 22 of the needle wire 21.
The thermostat 19 used here is a metal that has the property of relaxing when heated above a certain temperature (for example, 72° C.). The other end bent portion 22' of the needle line 21
is hooked into a through hole of a protrusion 18 provided at the center of the peripheral edge 11b of the actuating plate 11.

Therefore, when the ventilation opening of the present invention is installed in the wall of a building, the operating plate 11 is moved in the horizontal direction perpendicular to the opening 9 of the cylinder 8 during normal operation, as shown in FIGS. 2 and 3. Keep it in place. At this time, the actuating plate 11 is held in the horizontal direction by tension in the vertical direction by a needle wire 21 that is hooked on the through hole of the projection 18 on the inside thereof and a thermostat 19 that is hooked on the needle wire 21. At this time, the actuating plate 11 that is rotatably arranged inside the cylinder body 1 has its pivot 10 at an eccentric position away from the diameter part in the inner rotation direction, so the peripheral edge of the actuating plate 11 becomes horizontal in the cylinder part. Part 1
The maximum circumference point of 1b is located close to the mesh plate 5 at the opening connection portion with the cover body 3. at the same time,
Actuation plate 11 rotated outward from opening 9 of cylinder 1
The outer end portion 11a of the cylindrical body 1 slightly protrudes from the side surface of the cylindrical body 1.

Under these conditions, if a fire breaks out, the hot air in the room will flow through the pipes to the ventilation opening, but when the heating temperature reaches a certain temperature, the thermos, which is under tension, will The tattoo 19 relaxes and stretches in response. Then, the lower through hole 20 of the thermostat 19 comes to be disengaged from the protrusion 17 of the protrusion 16 with which it was engaged, so that the actuating plate 11
The extension bombs 13, 13 of the pivot 10, which were supporting the horizontal position, are restored and the actuating plate 11 is lifted up.
As a result, the inner peripheral edge 11b of the actuating plate 11
comes into contact with the inside of the horizontal flange 14 of the cylinder opening 9 and stops, and the outer end 11a of the actuating plate comes into contact with the outside of the cut line end 8' of the closing plate 8 of the cylinder opening 9. It comes into contact with and stops.

3. Effects of the invention In this way, the present invention provides an opening 9 in which the closing plate 8 is formed in a part on the outer end surface of the cylinder 1 fixed to the inside of the cover 3, and the An actuating plate 11 that matches the shape of the opening is pivoted via a spring 13 to a pivot 10 eccentrically installed in the opposite direction to the closing plate, and the inner peripheral edge 11b of this actuating plate forms a jaw part around the opening. 14, and the outer linear end 11a of the actuating plate came into contact with and stopped on the outside of the closing plate, and one end was hooked to a protrusion 17 provided on a part of the cylindrical body. thermostat 1
The other end of the actuating plate is held in a horizontal position by hooking the other end of the actuating plate to a protrusion 18 provided on the peripheral edge 11b of the actuating plate through the needle line 21, and thus It has the following effects compared to the existing damper-equipped ventilation openings.

The actuating plate for opening and closing is provided in contact with the opening of the cylindrical body and is eccentrically rotated inward of the cylindrical body, and the opening is not fully opened but is formed with a closed plate remaining. As a result, the overall size of the actuating plate is relatively small, and the length of the cylindrical body only needs to be about half that of the conventional one, which takes up less space for installing the ventilation opening. This saves money and reduces the total cost of production, and since the opening/closing operation of the actuating plate is performed by the closing movement in one direction in the upper part of the cylinder, there is no possibility that gravel or other small foreign matter may enter the cylinder and interfere with the closing. There will no longer be a situation where the vent cannot be completely closed, and it will now be possible to always close the vent completely, making it possible to install highly safe ventilation vents in building construction.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an overall perspective view, FIG. 2 is a front view in the direction of view A in FIG. FIG. 4 is a front view of the actuating plate when the mouth is closed, and FIG. 5 is a cross-sectional view taken along line CC in FIG. 4. FIG. 6 is a perspective view of the thermostat section.

Claims (1)

[Scope of utility model registration request] An opening partially formed with a closing plate is provided on the outer end surface of the cylindrical body fixed to the inside of the cover, and the opening is attached to a pivot that is eccentrically installed in the opposite direction to the closing plate in contact with the opening. An actuating plate that fits the shape of is pivotally mounted via a spring so that the inner peripheral edge of the actuating plate comes into contact with the inside of the flange around the opening, and the outer straight end of the actuating plate fits the shape of the opening. The thermostat is configured to stop in contact with the outside of the closing plate, and one end of the thermostat is hooked to a protrusion provided on a part of the cylindrical body.The other end of the thermostat is hooked to a protrusion provided on the periphery of the actuating plate via a needle wire. The ventilation opening is configured to stop and hold the actuating plate in a horizontal position.