JP2003301555A - Fireproof ventilation corner mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such problems with an irregular external wall (for example, stone-like external wall) that, when the external wall is used for decoration a clearance may be produced between the corner and the external wall due to the irregularity formed in the external wall, and the clearance forms a ventila tion passage to an eaves rear space and, in case of fire, may form a flame leading passage. <P>SOLUTION: In this fireproof ventilation corner mechanism 1 installed between a nonflammable eaves soffit 2 and the nonflammable external wall 4, a corner bead 6 is connected to a corner bead support member 5 of generally channel shape in cross section fixed to an eaves rear joist 3 or an eaves joist 11, a base plate part 62 fixed to the corner bead 6 generally parallel with the eaves soffit 2 and forming a ventilation hole 66 and an erected part 61 erected from the base plate part 62 are fixed to the corner bead 6. The erected part 61 is provided between the eaves soffit 2 and the external wall 4, and nonflammable volume expanding materials 7 and 8 expanded by heat are installed on the surfaces of the erected part 61 facing the eaves soffit 2 and the external wall 4. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parting edge that enables ventilation in a wall of a building, an attic, etc., and finishes a ceiling material and an outer wall beautifully, and more particularly, when a fire occurs. The present invention relates to a fire prevention ventilation parting mechanism that automatically closes a ventilation hole and prevents a flame from entering a building.

[0002]

2. Description of the Related Art Conventionally, a technique in which a non-combustible volume expansion material is provided on a parting edge of an eaves ceiling plate, and a ventilation air passage provided on the parting edge is automatically closed by expansion of the noncombustible volume expansion material in case of fire. Is known. For example, in the technique disclosed in Japanese Unexamined Patent Publication No. 7-42299, a spacer is interposed between a substantially U-shaped eaves ceiling plate supporting member that supports the side edge of the incombustible eaves ceiling plate and the incombustible wall. A ventilation air passage is formed, and a nonflammable volume expansion material is attached to the back surface of the eaves ceiling plate support member facing the ventilation air passage.

Further, as a structure in which a ventilation hole is provided at the parting edge of the eaves ceiling plate, there is, for example, the technique described in Japanese Utility Model Laid-Open No. 2-68923. This technique is a technique in which a mesh interposing material is integrally provided on a part of the parting edge that can support the eaves ceiling plate, and thereby the back of the eaves is ventilated by the parting edge.

Further, in the technique disclosed in Japanese Patent Laid-Open No. 9-105200, a support member for supporting a non-combustible ceiling material which is conventionally made of a material such as iron or stainless is provided on the back surface of the support member with a non-combustible volume. By installing an expansive material and making the heat dissipation area of the support fitting larger than the heat receiving area, it can be made of aluminum alloy, which is a low-melting metal, and there are problems in terms of accuracy, appearance, cost of secondary processing, etc. A resolved structure is proposed.

[0005]

As described above, various forms have been proposed for the fire prevention ventilation parting mechanism, but in the fire prevention test for confirming the fire prevention performance of a building, the outer wall and the eave ceiling with flat surfaces are used. Since the test is often performed only in the fire prevention ventilation parting mechanism provided between the plate and the plate, attention is not paid to the gap between the outer wall and the parting edge. Since (for example, a stone-like outer wall) is frequently used, in this case, a gap may be formed between the parting edge and the outer wall due to the unevenness formed on the outer wall. This serves as a ventilation path to the space behind the eaves, and in the event of a fire, this may become a flame conduit.

[0006]

The problem to be solved by the present invention is as described above, and the means for solving this problem will be described below.

That is, according to the first aspect of the present invention, in the fireproof ventilation parting mechanism provided between the noncombustible eaves ceiling plate and the noncombustible outer wall, the base plate and the substrate provided at the parting edge substantially parallel to the eaves ceiling plate. A standing part that stands up from the part, and the standing part is interposed between the eaves ceiling plate and the outer wall, and a non-combustible volume expansion material that expands by heat is applied to each surface facing the eaves ceiling plate and the outer wall of the standing part. It is provided.

In the second aspect, the ventilation hole is formed in the substrate portion of the parting edge.

According to a third aspect of the present invention, the parting edge is formed so as to be joined to a parting edge supporting member attached to the eaves back edge or the eaves edge so as to be joined to the parting edge. .

According to a fourth aspect of the present invention, the parting edge supporting member is formed in a substantially U-shaped cross section so as to support the side edge of the eaves ceiling plate.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described. 1 is a cross-sectional explanatory view showing the overall configuration of a fire protection ventilation parting mechanism according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing the structure of a parting edge, and FIG. 3 is a cross section showing the structure of a fire protection ventilation parting mechanism. 4 and 5 are plan views and FIG. 5 is a perspective view.
FIG. 6 is a cross-sectional view showing a fireproof ventilation parting mechanism during expansion of the noncombustible volume expandable material. FIG. 7 is a cross-sectional explanatory view showing another embodiment of the fire protection ventilation parting mechanism.

A fire prevention ventilation parting mechanism 1 according to an embodiment of the present invention.
Then, as shown in FIG. 1, the parting edge supporting member 5 is the eaves edge 3
, The parting edge 6 attached to the parting edge support member 5 is formed in a substantially L-shaped cross section, and holds the eaves ceiling plate 2 made of a noncombustible material on the open side of the U-shape, The other side faces the outer wall 4 which is also made of non-combustible lumber. In addition, the outer wall 4 in the present embodiment has grooves formed in a grid shape on the surface to form unevenness, and the parting edge 6 is arranged close to the outer wall 4 due to the unevenness of the surface of the outer wall 4. Even if it does, a gap will occur between the outer wall 4 and the parting edge 6. However, the surface shape of the outer wall 4 is not limited to this.

The parting edge 6 is provided as a parting edge 6 that fits the space between the eaves ceiling plate 2 and the outer wall 4, and also the eaves back space 15 formed between the eave roof and the eaves ceiling plate 2. It also has the function of forming the ventilation path 10 to the. The parting edge 6 is made of a metal that melts at a lower temperature than iron or aluminum such as an aluminum alloy, and is provided continuously between the outer wall 4 of the building and the eaves ceiling plate 2 over a required width. ing.

As shown in FIGS. 2, 4 and 5, the parting edge 6
Is a substrate portion 62, which is an exposed portion formed in a substantially L-shaped cross section and provided substantially parallel to the eaves ceiling plate 2, and the substrate portion 6.
There is provided a plate-shaped standing portion 61 which is integrally formed with the substrate 2 and stands in a direction substantially perpendicular to the substrate portion 62.
The parting edge 6 is arranged such that the upright portion 61 is interposed between the eaves ceiling plate 2 and the outer wall 4, and the upright portion 61 is close to the outer wall 4 and separated from the eaves ceiling plate 2 by some distance. Is arranged. The shape of the parting edge 6 is not limited to the substantially L-shaped cross section shown in the present embodiment, and at least the substrate portion 6 is formed on the parting edge 6.
2 and the upright portion 61 (upright surface) are sufficient,
For example, the cross section may be substantially U-shaped.

A rib 69 is formed on the substrate portion 62 at the end opposite to the standing portion 61 side. Also, the substrate unit 6
2 is provided with a plurality of ventilation holes 66, 66 ... For communicating the external space with the eaves space 15 to ventilate the eaves space 15. Therefore, the ventilation holes 66, 66 ...
From the above, the ventilation path 10 is formed from the eave ceiling plate 2 and the upright portion 61 of the parting edge 6 to the eave space 15.

Ventilation passage 10 formed as described above.
Is a substantially straight line and does not form a complicatedly bent path, so a small amount of material is used to form the parting edge 6, cost can be reduced and weight can be reduced, and the ventilation volume in actual operation can be easily secured. . In this embodiment, the ventilation hole 66
Is a long hole and is provided in parallel with the base plate portion 62 of the parting edge 6 without impairing the design as the parting edge 6 arranged between the eaves ceiling plate 2 and the outer wall 4. It is designed like.

On the other hand, the standing portion 61 of the parting edge 6 is provided with a concave groove 64 which is convex toward the eaves ceiling plate 2 side, and the standing portion 61 is formed in the concave groove 64 and with respect to the concave groove 64. On the opposite side, a strip-shaped noncombustible volume expansion material 7 that expands due to heat
・ 8 is pasted. That is, the recessed groove 64 is formed in the storage groove of the non-combustible volume expandable material 7 so that the recessed groove 64 can be stored so as not to project beyond the side surface of the outer wall 4 of the standing portion 61 when the non-combustible volume expandable material 7 is attached. Then, in the standing portion 61 of the parting edge 6, non-combustible volume expansion materials 7 and 8 are attached to both sides (front and back) on the outer wall 4 side and the eaves ceiling plate 2 side.

As shown in FIGS. 3 to 5, the parting edge support member 5 enables the parting edge 6 to be attached to the eaves back edge 3 via the parting edge support member 5, and the eaves ceiling plate 2
Is configured to be able to support one side end. The parting edge support member 5 has a substantially U-shaped cross section, and is an upper plate portion 51 and a lower plate portion 5 which are plate members provided substantially parallel to the eaves ceiling plate 2.
2 and an intermediate plate portion 53 that connects the upper plate portion 51 and the lower plate portion 52 and is provided in a direction substantially perpendicular to the upper plate portion 51 and the lower plate portion 52. The lower plate portion 52 and the middle plate portion 53 are integrally configured.

The upper plate portion 51 of the parting edge support member 5 extends toward the eaves ceiling plate 2 side from the lower plate portion 52, and the parting edge support member 5 is formed.
A plurality of insertion holes 58, 58 for inserting the attachment members 12, 12 for attaching the to the roof edge 3 are provided. Further, the lower plate portion 52 is formed with an eaves ceiling plate holding protrusion 54 having a shape protruding upward, and the noncombustible eaves ceiling plate 2 inserted between the eaves ceiling plate holding protrusion 54 and the upper plate portion 51. It is configured so that the side edge of the can be clamped from above and below.

In the middle plate portion 53 of the parting edge support member 5,
A recessed groove 57 is formed in the upright portion 61 of the parting edge 6 on the side facing the eaves ceiling plate 2 to insert the non-combustible volume expandable material 8. The non-combustible volume expandable material of the recessed groove 57 is formed. 8
A band-shaped non-combustible volume expansion material 9 that expands due to heat is attached to the side opposite to the side where the is inserted.

Then, as shown in FIG. 5, the parting edge supporting members 5, 5, ... Attached to the eaves back edge 3 at substantially equal intervals,
The parting edge 6 can be joined to the parting edge support member 5 by pressing and pressing the parting edge 6 from below. At this time, the nonflammable volume expansion material 8 is fitted into the concave groove 57 of the parting edge support member 5.

A fire prevention ventilation parting mechanism 1 constructed as described above.
For example, when the temperature becomes high due to a fire or the like, as shown in FIG. 6, the noncombustible volume expansion materials 7, 8 and 9 expand, and the gap formed between the parting edge 6 and the outer wall 4 becomes noncombustible volume expansion. The material 7 is closed, and the non-combustible volume expansion material 8 is closed in the air passage 10 formed between the parting edge 6 and the eaves ceiling plate 2, so that high temperature air, flame, etc. You can prevent it from entering. In addition, at the place where the parting edge support member 5 is interposed between the parting edge 6 and the eaves ceiling plate 2, the non-combustible volume expansion material 9 attached to the parting edge support member 5 expands to thereby elevate the eaves ceiling. The air passage 10 formed between the plate 2 and the parting edge support member 5 is closed.

As described above, even if the outer wall 4 is provided with irregularities and a gap is formed between the outer wall 4 and the parting edge 6, the gap can be reliably closed in case of a fire. . Even if the surface shape of the outer wall 4 is a flat surface without irregularities, the fire prevention ventilation parting mechanism 1 according to the present invention can be applied.

Further, the parting edge 6 is formed in a shape covering the side edge of the noncombustible eaves ceiling plate 2, and the parting edge 6 faces the noncombustible eaves ceiling plate 2 and the outer wall 4. By attaching the non-combustible volume expansion materials 7, 8 and 9 on both surfaces, the ventilation air passage 10 formed between the parting edge 6 and the eaves ceiling plate 2 and the outer wall 4 are formed.
The gap between the parting edge 6 and the outer wall 4 caused by the uneven surface shape can be simultaneously and automatically closed by the expansion of the noncombustible volume expandable materials 7, 8 and 9 when a fire occurs.

Then, the parting edges 6 (or the parting edges 6 and the parting edge supporting members 5) are provided on both sides of the upright portion 61 of the parting edges 6, and the non-combustible volume-expanding material 7.8 (7.9). Since it is a structure sandwiched between, the noncombustible volume expansion material 7.8 (7.9) expands when a fire occurs, and the standing portion 61 of the parting edge 6 (or the parting edge 6 and the parting edge support member 5) eaves. It is shaped to cover both the ceiling plate 2 side and the outer wall 4 side, and secures the heat resistance performance of the parting edge 6 or parting edge supporting member 5 which is at least the portion where the noncombustible volume expansion material 7.8 (7.9) is arranged. can do. Therefore, the parting edge 6 can be made of a metal, such as an aluminum alloy, which melts at a lower temperature than iron or stainless steel.

For example, when the parting edge 6 is made of an aluminum alloy, it is used by cutting it to a predetermined size at the construction site, regardless of whether it is a thin plate or a thick plate, as compared with the case where it is made of iron or stainless steel. The secondary processing is easy and the design such as shape and painting is easy to apply.

Further, after the non-combustible volume expansion materials 7, 8 and 9 are attached to the cut-off edge 6 and the cut-off edge support member 5 respectively in a single state to secure the required performance of fire prevention, the cut-off edge support member 5 is attached to the cut-off edge support member 5. By joining and assembling the parting edges 6, product processing can be simplified and productivity can be improved.

In the above embodiment, the fire / fire / ventilation ventilation parting mechanism 1 is provided in a structure in which the eaves ceiling plate 2 is in a substantially horizontal state. However, as shown in FIG. 7, the eaves ceiling plate 2 has a slope. It is also possible to deal with what is held and held. Even when the eaves ceiling board 2 has a slope, as in the case where the eaves ceiling board 2 is substantially horizontal, the parting edge support member 5 is fixed to the eaves edge 11 and the parting edge 6 is attached to the parting edge support member 5. Join and fix. When the temperature becomes high due to a fire or the like, the noncombustible volume expansion materials 7, 8 and 9 expand to close the gap formed between the outer wall 4 and the upright portion 61 of the parting edge 6, and the noncombustibility. Volume expansion material 7/8/9 expands and eaves ceiling plate 2 and parting edge 6
The ventilation passage 10 formed between the
It is possible to prevent the entry of high temperature air, flames, etc. into the air.

[0029]

Since the present invention is constructed as described above,
The following effects are achieved.

That is, as described in claim 1, in the fireproof ventilation parting mechanism provided between the noncombustible eaves ceiling plate and the noncombustible outer wall, the part of the cutout edge and the board part substantially parallel to the eaves ceiling plate are provided. A non-combustible volume expansion material that is provided with a standing portion standing upright from the base plate portion, the standing portion is interposed between the eaves ceiling plate and the outer wall, and the surfaces of the standing portion facing the eaves ceiling plate and the outer wall are expanded by heat. Since the above is provided, it is possible to automatically close the eaves ceiling plate and the standing portion, and the air passages of the outer wall and the standing portion in the event of a fire. Further, when a fire occurs, the fire resistance of the parting edge can be improved by sandwiching the standing portion with the non-combustible volume expansion material.

Since the ventilation hole is formed in the base plate portion of the parting edge as described in claim 2, it is possible to form a ventilation air passage in a substantially vertical direction, maintain ventilation efficiency and form the parting material of the parting edge. The amount of can be suppressed.

According to a third aspect of the present invention, the parting edge is formed so that it can be joined to the eaves back edge formed so as to be joined to the parting edge or the parting edge support member attached to the eaves edge. Installation work becomes simple.

Since the parting edge support member is formed in a substantially U-shaped cross section so as to support the side edge of the eaves ceiling plate, the parting edge support member has a function of supporting the parting edge. And can also have the function of supporting the eaves ceiling plate.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view showing an overall configuration of a fire protection ventilation parting mechanism according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the structure of a parting edge.

FIG. 3 is a cross-sectional view showing the structure of a fire prevention ventilation parting mechanism.

FIG. 4 is a plan view of the same.

FIG. 5 is a perspective view of the same.

FIG. 6 is a cross-sectional view showing a fireproof ventilation cutout mechanism when the nonflammable volume expandable material is expanded.

FIG. 7 is an explanatory cross-sectional view showing another embodiment of the fireproof ventilation cutout mechanism.

[Explanation of symbols]

1 Fire prevention ventilation shut-off mechanism 2 roof panels 3 eaves 4 outer wall 5 Cut-off edge support member 6 cut edge 7/8/9 Non-combustible volume expansion material 11 eaves 61 Standing part 62 board part 66 ventilation holes

Claims (4)

[Claims] 1. A fireproof ventilation parting mechanism provided between a non-combustible eaves ceiling plate and an incombustible outer wall, and a standing part standing upright from the base plate part provided substantially parallel to the eaves ceiling plate at the parting edge. And the standing portion is interposed between the eaves ceiling plate and the outer wall, and a non-combustible volume expansion material that expands by heat is provided on each surface facing the eaves ceiling plate and the outer wall of the standing portion. Fireproof ventilation closeout mechanism. 2. The fire prevention ventilation parting mechanism according to claim 1, wherein a ventilation hole is formed in the base plate portion of the parting edge. 3. The parting edge is formed so that it can be joined to a parting edge support member attached to the eaves back edge or the eaves edge formed so as to be able to be joined to the parting edge. The fire prevention ventilation parting mechanism according to claim 1 or claim 2. 4. The fire protection ventilation parting mechanism according to claim 3, wherein the parting edge support member is formed in a substantially U-shaped cross section so as to be able to support the side edge of the eaves ceiling plate.