JPH108674A - Fire-proof damper for ventilation ridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire-proof damper for a ventilation ridge laid on the roof of a building so as to cover a ventilation space in the building, which is adapted to be incorporated in the ventilation ridge, and which has a simple structure so as to prevent ventilation between the inside and outside of the building from being obstructed. SOLUTION: A protrusion 41 of a leaf spring 4 is usually brought into contact with a fuse 32 of a projecting piece 3. The spring 4 is resiliently biased toward in a separating direction, having a lower end side engaged with a locking panel 5 so as to hold a cover panel 2 which is therefor pressed upward above a laid panel 1. With this arrangement, when the fuse 32 is melted, the protrusion 41 of the leaf spring 4 is projected into an opening formed in the projecting piece 3 so as to resiliently displaced toward the planar surface of the projecting piece 3, and the leaf spring 4 is disengaged from the locking panel 5 so as to make the cover panel 2 into press contact with the laid panel 1, thereby it is assembled so as to block a ventilation hole 10a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation ridge installed inside a ventilation ridge installed on a roof so as to cover a ventilation interval of a house, and for preventing a flame from flowing out from the ventilation interval of the house to the outside. This is related to fire dampers.

[0002]

2. Description of the Related Art In general, various devices for preventing a flame from flowing out to the outside, such as a fireproof damper mounted on a wall together with a ventilation fan, already exist. This type of fire damper is also installed inside a roof building for ventilation of indoor and outdoor air (for example, see Japanese Utility Model Publication No. 4-42424) to prevent the flame from leaking out of the ventilation building to the outside. It is desirable to equip it.

[0003]

DISCLOSURE OF THE INVENTION The present invention is suitable to be installed inside a ventilation building installed on a roof to cover the ventilation interval of a house, and is structurally simplified so as not to hinder ventilation of indoor and outdoor air. It is an object to provide a configurable fire damper for a ventilation building.

[0004]

According to a first aspect of the present invention, a fire damper for a ventilation building according to the present invention is provided inside a ventilation building installed on a roof so as to cover a ventilation interval of the house, and a flame is applied to the house. It prevents the water from flowing out from the ventilation gap to the outside, and installs the board surface provided with the ventilation hole over the ventilation gap of the house and attaches it to the roof surface, and separates the installation board from the ventilation gap A cover plate that is disposed above and is capable of blocking the ventilation holes of the installation plate; and a spring that is disposed between the installation plate and the cover plate and that supports the cover plate in a tensile manner. A protruding piece that rises below the cover plate toward the pore, a leaf spring whose upper end side is attached to the protruding piece plate surface and that can be freely biased toward or away from the protruding plate surface, A fuse that can be melted by being embedded in the opening of the plate surface A projection protruding from the plate surface of the leaf spring on a side opposite to the plate surface of the protruding piece, and a locking plate attached to the plate surface of the installation plate and capable of engaging or disengaging with the plate spring at the lower end side. Normally, the leaf spring is biased in the direction away from the plate surface of the protruding piece by bringing the projection of the leaf spring into contact with the fuse of the protruding piece, and the leaf spring is engaged with the locking plate at the lower end side. When the fuse is melted, the projection of the leaf spring is immersed in the opening of the protruding piece, and the leaf spring is moved in the direction close to the plate surface of the protruding piece. And the cover spring is disengaged from the locking plate, and the cover plate is assembled by a spring so as to be able to be pressed against the plate surface of the installation plate.

In the fire damper for a ventilation building according to a second aspect of the present invention, the lid plate is formed in a slender housing shape having an open lower surface, and both ends in the longitudinal direction are mounted on the plate surface of the installation plate. It is configured by receiving it with the end frame and horizontally assembling it.

In the fire damper for a ventilation building according to claim 3 of the present invention, the cover plate has a tongue protruding toward the installation plate, and the cover plate is pressed against and held on the plate surface of the installation plate. The tongue is provided with an upside-down claw that engages with the edge of the installation plate on the plate surface, and is assembled so as to be able to combat the flames.

In the fire damper for a ventilation building according to a fourth aspect of the present invention, the installation plate includes a bottom plate having an air hole, side plates bent obliquely upward from both sides of the bottom plate, and each side plate. And an overhanging plate portion which is bent obliquely downward from the upper end side of the vehicle, and the bending angles of the side plate portion and the overhanging plate portion are assembled so as to be adjustable in angle according to the roof gradient.

[0008] In the fire damper for a ventilation building according to claim 5 of the present invention, the locking plate is formed in a substantially upward U-shape whose upper end is opened outward so that the spring can be biased outward. Each of the holes is press-engaged with a hole edge of the pore and is removably assembled to the installation plate.

In the fire damper for a ventilation building according to a sixth aspect of the present invention, the projecting pieces and the leaf springs each have a lower end located below the ventilation hole of the installation plate, and a lower end of the projecting piece serves as a locking plate. The lower end of the leaf spring engages with a receiving piece formed by cutting the bottom plate of the locking plate downwardly toward the slit, and the projecting piece and the leaf spring are inserted into the slit provided in the bottom plate. Are attached to the locking plate so as to be able to move down from the slits of the bottom plate as they are disengaged from the receiving piece.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, with reference to the accompanying drawings, in ridge portion corresponding portions of the illustrated embodiment includes a vent spacing W ₁ of the house, as shown in Figure 1, the venting gap W
₁ shows a fire damper installed inside a ventilation building F covering ₁ . This fire prevention damper is a slender one installed along the longitudinal direction of the ridge, and its main components are assembled by bending sheet metal.

As shown in FIGS. 1 and 2, the fire damper is assembled on an installation plate 1 having a plurality of ventilation holes 10a provided at regular intervals in a longitudinal direction of a bottom plate portion 11. Each ventilation hole 10a is surrounded by an edge flange 10b whose hole edge is raised and bent above the plate surface of the bottom plate 11. Bottom plate 11 the mounting plate 1 is to KakeDo disposed vent spacing W ₁ of the house
Side plate portions 12a and 12b which are raised and bent obliquely upward from both longitudinal sides of the bottom plate portion 11;
The projections 13a, 13b are bent obliquely downward from the upper ends of the a, 12b.

The installation plate 1 includes overhang plate portions 13a, 13
b is the mounting of the entire damper by fixing Ategai the roof on either side roof ridge line as a basis to set up installation considerably point of the ventilation gap W _1. The installation plate 1 includes side plate portions 12a, 12b and overhang plate portions 13a,
Bending angle 13b is angular adjusted freely formed to accommodate the differences in response to the construction site of the ventilation gap W ₁ and roof slope of a house.

On the basis of the installation plate 1, the cover plate 2 is opposed to the bottom plate portion 11 so that the ventilation holes 10 a can be shielded.
It is installed above. The cover plate 2 is provided with a top plate 20,
It is bent and formed into a housing shape whose lower surface side is open from the side plate portions 21a, 21b and the end plate portion 22a (22b). Its lid plate 2 is held by the projecting pieces 3 and the leaf spring 4 as described later above the bottom plate portion 11 of the installation plate 1 at a ventilation gap W _2.

The protruding piece 3 is formed by bending a sheet metal material into a T-shape, and the upper side 3a is formed with a pop rivet 3b or the like.
It is provided so as to stand below the cover plate 2 by fixing to 0. As shown in FIG. 2, the protruding piece 3 is provided on a plate surface of a plate material which is overlapped and bent by vertically displacing the openings 30 and 31 so as to partially overlap. Among these openings 30, 31, a fuse 32 which can be melted by heat is embedded and mounted on one side 30 in a solid state.
The opening 31 on the other side is provided for discharging the fuse 32 melted by heat.

The leaf spring 4 has its upper end side fixed to the plate surface of the protruding piece 3 with a pop rivet 40 with the protruding piece 3 facing the plate surface, so that the spring can be freely deflected in a direction close to or away from the protruding piece 3. Attached to. The leaf spring 4 is provided with a projection 41 protruding from a side facing the plate surface of the protruding piece 3. The projection 41 abuts on the fuse 32 of the protruding piece 3 to bias the leaf spring 4 in the direction in which the protruding piece 3 is separated.
Further, the plate spring 4 is provided so as to be deflected in the direction of approaching the protruding piece 3 by being immersed in the opening 30 with the thermal melting of the fuse 32.

The leaf spring 4 is provided with a locking plate 5 which engages with the lower end when the projection 41 comes into contact with the fuse 32 and is in a state where the spring is deviated in the separating direction. As shown in FIG. 1, the locking plate 5 is formed in a substantially upward U-shape whose upper end is opened outward so that the spring can be freely biased. The locking plate 5 has a folded edge 50 at the upper end.
a, 50b, and the folded edges 50a, 50b are formed as shown in FIG.
b is removably attached to the lower side of the installation plate 1 by being pressed into engagement with the edge of the hole.

The locking plate 5 is provided with a slit 51 for inserting the lower end of the protruding piece 3 on the plate surface of the bottom plate portion 50c. Further, a receiving piece 52 of the leaf spring 4 is provided by cutting and bending the bottom plate portion 50c downwardly toward the slit 51. The lower end of the projecting piece 3 and the leaf spring 4 are located below the ventilation hole 10a of the installation plate 1 with respect to the locking plate 5, and the lower end of the projecting piece 3 is located at the slit 51 of the bottom plate 50c.
And the lower end of the leaf spring 4 is engaged with the receiving piece 52 of the bottom plate 50c. The protruding piece 3, the leaf spring 4 and the locking plate 5 are
Can be mounted at a plurality of places such as one place at the center or two places.

As shown in FIG. 4, a coil spring 6 for pulling and supporting the cover plate 2 is provided between the installation plate 1 and the cover plate 2 at both ends in the longitudinal direction. The coil spring 6 is provided with a ventilation hole 10a of the installation plate 1.
Between the substantially inverted L-shaped tongue piece 7 attached to the top plate portion 20 of the lid plate and the substantially upward U-shaped support frame 8 attached to the lower side of the installation plate 1. It is arranged for delivery.

As shown in FIG. 5, the tongue 7 protrudes below the ventilation hole 10a of the installation plate 1, and its plate surface has
0 is cut and bent. This inverted claw 70 is
Is engaged with the edge of the supporting frame 8 attached to the lower side of the installation plate 1 as it is pressed against the installation plate 1 so as to oppose the burning of the lid plate 2 by the flame. Have been.

As shown in FIGS. 1 and 4, both ends of the cover plate 2 are supported by end frames 9 mounted on the plate surface of the installation plate 1. The end frame 9 includes an upper plate portion 90, both side plate portions 91,
92 and an end plate 93. Also,
While the top plate portion 20 of the lid plate 2 is received by the upper plate portion 90,
Figure end plate portion of the lid plate 2 as shown in 4 (22a) 22b and slidably supported it by pushing the cover plate 2 which is held in parallel spaced-bottom plate portion 11 and the ventilation gap W ₂ Installation plate 1 up to Provided to support.

In the fire damper thus constructed, the cover plate 2 is held in a state of being pushed upward by the protruding piece 3 and the leaf spring 4, and the installation plate 1 is sloped on both sides to the roof slope by the overhanging plate portions 13a, 13b. It is equipped inside the ventilation building F by fixing to In the fire damper, the cover plate 2 is usually used.
Sets the ventilation interval W ₂ to the lower end sides of the side plates 21 and 22 and the installation plate 1.
By separating the air from the bottom plate 11, indoor and outdoor air is provided so as to be freely ventilated at a plurality of ventilation holes 10 a and a ventilation interval W ₁ of the house.

The fire damper is provided with a ventilation space W of a house where the bottom plate 11 of the installation plate 1 is bridged and arranged according to the construction site.
₁ there are some wide and narrow difference or overhang plate portion 1 of the mounting plate 1
Even if there is a slight difference in the inclination angle of the roof slope for applying and fixing the 3a, 13b, if the bending angles of the side plate portions 12a, 12b and the overhang plate portions 13a, 13b are adjusted, the overhang plate portions 13a, 13b can be roofed. It can be fixed to the surface.

Since both ends of the cover plate 2 are supported by the end frames 9, a horizontal posture can be stably maintained. Further, by assembling the protruding piece 3 and the leaf spring 4 with the locking plate 5 provided on the lower side of the installation plate 1, the overall height can be suppressed while maintaining the pushing-up height of the cover plate 2. Further, since the locking plate 5 is detachably provided on the installation plate 1, it can be easily disassembled or reassembled for maintenance and inspection.

In the fire damper, when the fuse 32 is melted by the heat at the time of the fire, the melted fuse 32 is discharged from the openings 30 and 31 of the projecting piece 3 and the projection 41 of the leaf spring 4 is removed. The plate spring 4 is immersed in the opening 30 of the protruding piece 3, and the plate spring 4 is spring-biased in a direction close to the protruding piece 3, and is disengaged from the receiving piece 52 of the locking plate 5 together with the protruding piece 3 by the tensile force of the coil spring 6. It descends from the slit 51 of the locking plate 5. Thereby, since the cover plate 2 is pressed against the bottom plate 11 of the mounting plate 1, installed fire a fire soar a plurality of vent holes 10a is shielded by the cover plate 2 in the ventilation gap W ₁ of the house It can be prevented from flowing out through the ventilation holes 10a of the plate 1.

When the cover plate 2 is lowered, the upside down claw 70 of the tongue piece 7 slides against the edge of the support frame 8 so that the spring is biased in the escape direction, and the cover plate 2 is moved to the bottom plate portion of the installation plate 1. When pressed against 11, the spring is restored on the lower side of the supporting frame 8 and engages with the edge of the supporting frame 8 on the lower side. At the same time, since the coil spring 6 pulls and supports the cover plate 2, the cover plate 2 can resist the fluttering by the flame, and can reliably keep the ventilation hole 10 a of the installation plate 1 in a shielded state.

In the above-described embodiment, the case where the ventilation ridge F is provided at a location corresponding to the ridge of the gable roof has been described.
The present invention can be similarly applied to equipping a ventilation building installed on a slope midway or a ventilation building installed at a position corresponding to a diagonal ridge line of a ridge with fire prevention dampers.

[0027]

According to the fire damper for a ventilation building according to the first aspect of the present invention, the cover plate is normally pushed upward from the plate surface of the installation plate provided with the ventilation holes with a ventilation interval therebetween in a normal state. Therefore, the indoor and outdoor air flowing inside the ventilation building can be ventilated at the ventilation interval of the house from the ventilation holes of the installation plate. In addition, when the fuse melts in the event of a fire, the leaf spring comes off from the locking plate, and the spring pulls the lid plate to press against the plate surface of the installation plate. it can.

According to the fire damper for a ventilation building according to the second aspect of the present invention, the cover plate can normally be stably pushed up by normally supporting the cover plate horizontally with the end frame. .

According to the fire damper for a ventilation building according to the third aspect of the present invention, the lid plate is locked with the inverted claw so as to be able to resist the fanning by the flame, so that the ventilation hole of the installation plate is securely formed with the lid plate. It can be kept shielded.

According to the fire damper for a ventilation building according to the fourth aspect of the present invention, since the side portions of the installation plate and the overhanging plate portion are formed so as to be adjustable in angle, there is a slight difference in the ventilation interval and roof gradient of the house. Even if there is, by adjusting each bending angle, the bottom plate portion of the installation plate can be arranged and fixed by bridging the ventilation interval of the house.

According to the fire damper for a ventilation building according to the fifth aspect of the present invention, the maintenance and inspection and reassembly can be easily performed by detachably attaching the locking plate to the installation plate.

According to the fire damper for a ventilation building according to claim 6 of the present invention, the height of the entire damper can be reduced by assembling the projecting piece and the leaf spring with the locking plate below the installation plate. Can be.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a fire damper for a ventilation building according to the present invention from a longitudinal end side.

FIG. 2 is an explanatory view showing an assembling structure of a projecting piece, a leaf spring, and a locking plate of the fire prevention damper from one side in a longitudinal direction.

FIG. 3 is an explanatory view showing a planar assembly structure of a projecting piece, a leaf spring, and a locking plate of the fireproof damper shown in FIG. 2;

FIG. 4 is an explanatory view showing an end structure of the fire prevention damper on one side in a longitudinal direction.

FIG. 5 is an explanatory diagram showing a plan view of an end structure of the fire prevention damper shown in FIG. 4;

[Explanation of symbols]

F Ventilation building W ₁ Ventilation interval of house W ₂ Ventilation interval of lid plate 1 Installation plate 10a Ventilation hole of installation plate 11 Bottom plate portion of installation plate 12a, 12b Side plate portion of installation plate 13a, 13b Projection portion of installation plate 2 Cover plate REFERENCE SIGNS LIST 3 protruding piece 30, 31 protruding piece opening 32 fuse 4 leaf spring 41 leaf spring protrusion 5 locking plate 50 c bottom plate portion of locking plate 51 locking plate slit 52 locking plate receiving piece 6 spring 7 tongue 70 Upside down nail 9 End frame

Claims (6)

[Claims] 1. A fire damper for a ventilation building, provided inside a ventilation building installed on a roof so as to cover a ventilation space of a house, for preventing a flame from flowing out from the ventilation space of the house to the outside, An installation plate that is attached to the roof surface with the board surface provided with the ventilation holes bridging the ventilation space of the house, and the installation plate that is located above the installation plate with the ventilation space between them can shield the ventilation holes of the installation plate A cover plate, and a spring that is arranged between the installation plate and the cover plate to tension and support the cover plate, and furthermore, a protruding piece that rises below the cover plate toward the ventilation hole of the installation plate. A leaf spring whose upper end is attached to the plate surface of the protruding piece and which can be spring-biased in a direction close to or away from the plate surface of the protruding piece, and embedded in a hole of an opening provided in the plate surface of the protruding piece. And a fuse that can be melted and heat-dissipated from the plate surface of the leaf spring on the side facing the plate surface of the protruding piece. And a locking plate attached to the plate surface of the installation plate and capable of engaging or disengaging with the leaf spring at the lower end side. Normally, the projection of the leaf spring comes into contact with the fuse of the protruding piece. And the spring is displaced in the direction away from the plate surface of the protruding piece,
The leaf spring is engaged with the locking plate at the lower end side to hold the lid plate in a state of being pushed upward from the installation plate, and as the fuse is melted, the projection of the leaf spring is immersed in the opening of the projecting piece. The leaf spring is displaced in the direction of approaching the plate surface of the protruding piece, and the leaf spring is disengaged from the locking plate so that the lid plate can be pressed and held on the plate surface of the installation plate by the spring. A fire damper for a ventilation building, characterized by the following. 2. The lid plate is formed in a slender housing shape having an open lower surface, and is mounted horizontally by receiving both ends in the longitudinal direction by end frames mounted on the plate surface of the installation plate. The fire damper for a ventilation building according to claim 1, wherein 3. The cover plate has a tongue protruding toward the installation plate, and has an upside-down claw that engages with an edge of the installation plate as the cover plate is pressed against the plate surface of the installation plate. 3. The fire damper for a ventilation building according to claim 1, wherein the tongue piece is provided on a plate surface and is assembled so as to be able to combat the flame. 4. An installation plate comprising: a bottom plate portion having a vent; a side plate portion bent obliquely upward from both sides of the bottom plate portion; and an overhang plate portion bent obliquely downward from an upper end side of each side plate portion. The ventilation damper for a ventilation building according to claim 1, wherein the side plate portion and the overhang plate portion are formed so as to be adjustable in angle according to the roof gradient. 5. The locking plate is formed in a substantially upward U-shape whose upper end is opened outwardly so as to be able to bias the spring outward, and each upper end is pressed into engagement with a hole edge of the ventilation hole to form a mounting plate. 2. The fire damper for a ventilation building according to claim 1, wherein the damper is detachably assembled. 6. The projecting piece and the leaf spring each have a lower end located below the ventilation hole of the installation plate, and the lower end of the projecting piece is inserted into a slit provided in the bottom plate of the locking plate. The lower end is engaged with a receiving piece formed by cutting the bottom plate of the locking plate downwardly toward the slit, and the protruding piece and the leaf spring are disengaged from the receiving piece with the bottom plate. The fire damper for a ventilation building according to claim 5, wherein the damper is attached to the locking plate so as to be able to descend from both slits.