JP5579469B2 - Interlayer sealing device - Google Patents

Description

  The present invention relates to an interlayer closing device for closing an interlayer gap secured between a wall panel serving as an outer wall of a building and a floor material at each level.

This type of interlaminar gap is essential for the flexible structure of a building that should avoid a constrained connection between the flooring of the building and a wall panel, such as a curtain wall, but if a fire breaks out in the building, There is a risk that high-temperature smoke or flame may be transmitted from the lower floor to the upper floor through the interlayer gap. For this reason, it is common practice to close the interlayer gap with a refractory material such as rock wool or ceramic wool.
By the way, since rock wool or the like is an aggregate of flame retardant fibers, it can prevent the propagation of flame from the lower floor to the upper floor, but cannot prevent the diffusion of smoke to the upper floor because it has air permeability.

Therefore, in order to block the interlayer gap, a steel plate is spanned between the curtain wall and the flooring, and the interlayer gap is closed with this steel plate. In this case, since the steel plate is required to have heat insulation and flame insulation, the steel plate is covered with mortar, rock wool or concrete.
An interlayer blocking structure provided with such a steel plate is disclosed in Patent Document 1, for example. This known interlayer blocking structure includes an L-shaped steel plate, which is attached to the inner surface of a curtain wall in which a fire-resistant board is laminated on the indoor side surface and is stretched between the fire-resistant board and the floor material. Yes. Specifically, the L-shaped steel plate has a vertical portion attached to the fireproof board with screws and a horizontal portion extending horizontally from the vertical portion, and the horizontal portion is placed on the upper surface of the beam material that supports the flooring. Thus, the interlayer gap is completely blocked.

JP-A-11-36479

However, since the above-mentioned L-shaped steel plate binds the curtain wall and the floor material in a restrictive manner, the bending of the building due to an earthquake or the like cannot be allowed, and the generation of abnormal noise, the curtain wall or the floor It may cause damage to the material.
The present invention has been made on the basis of the above circumstances, and the object thereof is to suitably close the interlayer gap without restricting the wall panel and the flooring, and from the lower floor to the upper floor. An object of the present invention is to provide an interlayer sealing device that can reliably prevent the diffusion of smoke.

In order to achieve the above object, an interlayer closing device according to the present invention is an interlayer closing device that closes an interlayer gap between an inner surface of a wall panel forming an outer wall of a building and a floor material of each level of the building. A fire-resistant fiber block to be disposed in the interlayer gap in order to close the interlayer gap, the fire-resistant fiber block made of an aggregate of fire-resistant fibers and having elasticity, and at least a lower layer side of the fire-resistant fiber block A heat-expandable refractory material that expands when heated, and a hooking means for hooking the flooring material while holding the fireproof fiber block. Includes a hook, and the hook extends integrally from the upper hook along the side surface of the fireproof fiber block and is coupled to the fireproof fiber block. A side cover, and an upper and a lower hook each extending integrally from an upper edge and a lower edge of the side cover and sandwiching the fireproof fiber block from above and below, each having a locking claw that bites into the fireproof fiber block at the tip. it shall be the feature of the containing.

According to this configuration, the heat-expandable refractory material expands due to heat at the time of fire, and fills the lower layer side of the refractory fiber block in the interlayer gap. Therefore, it is possible to block the flow of smoke from the lower floor and form a strong heat insulating layer.
Moreover, according to this structure, an interlayer blocker can be hooked on a flooring.
Further, according to this configuration, the interlayer closing device can be hooked on the floor material side and held in a cantilevered manner, and the layout work of the interlayer closing device can be easily performed.
Moreover, according to this structure, the coupling | bonding of a fireproof fiber block and a latch becomes stronger.

Further, according to the present invention, in an interlayer closing device for closing an interlayer gap between an inner surface of a wall panel forming an outer wall of a building and a floor material of each level of the building, the interlayer gap is closed to close the interlayer gap. A fire-resistant fiber block to be placed in the interlayer gap, which is made of an aggregate of fire-resistant fibers and has elasticity, and is disposed on at least the lower layer side of the fire-resistant fiber block and is heated. A heat-expandable refractory material that expands when the refractory fiber block is held, and a hooking means for hooking the flooring material while holding the fireproof fiber block, the hooking means includes a hooking tool, The hook includes an upper hook that is hooked on an upper surface of the flooring, a side cover that integrally extends from the upper hook along a side surface of the fireproof fiber block, and is coupled to the fireproof fiber block; An upper and lower hook each extending integrally from the upper and lower edges of the cover and sandwiching the refractory fiber block from above and below, each having a locking claw that bites into the refractory fiber block at the tip; An interlayer plugging device is provided, wherein the refractory refractory material has a shape that covers a lower portion of the refractory fiber block when viewed in cross section.
According to this configuration, the heat-expandable refractory material expands in the side portion of the refractory fiber block due to the heat at the time of the fire, so that a slight gap in the side portion is also filled, and the smoke circulation is more reliably blocked. Can do.
Furthermore, according to the present invention, in an interlayer closing device for closing an interlayer gap between an inner surface of a wall panel forming an outer wall of a building and a floor material of each level of the building, the interlayer gap is closed to close the interlayer gap. A fire-resistant fiber block to be placed in the interlayer gap, which is made of an aggregate of fire-resistant fibers and has elasticity, and is disposed on at least the lower layer side of the fire-resistant fiber block and is heated. A heat-expandable refractory material that expands when the refractory fiber block is held, and a hooking means for hooking the flooring material while holding the fireproof fiber block, the hooking means includes a hooking tool, The hook includes an upper hook that is hooked on an upper surface of the flooring, a side cover that integrally extends from the upper hook along a side surface of the fireproof fiber block, and is coupled to the fireproof fiber block; An upper and lower hook each extending integrally from the upper and lower edges of the cover and sandwiching the refractory fiber block from above and below, each having a locking claw that bites into the refractory fiber block at the tip; An interlayer plugging device is provided, wherein the refractory refractory material has a convex shape downward from the refractory fiber block.
According to this configuration, the thermally expandable refractory material has a convex shape toward the lower floor side in the interlayer gap on the lower floor side of the refractory fiber block, so when heated, it expands radially, The lower part of the refractory fiber block in the interlayer gap is more reliably filled. Moreover, according to this configuration, it is possible to omit the provision of the thermally expandable refractory material on both sides of the refractory fiber block.

More preferably, the latch is a lower cover that extends downward from the lower edge of the side cover and is elastically deformable. When the interlayer closing device is disposed in the interlayer gap, the latch is convex downward. a curved shape and further comprising a lower cover for covering the refractory fiber block from below, the thermally expandable fireproof material shall be the structure that covers the lower surface of the lower cover.
According to this configuration, when the interlayer closing device is disposed in the interlayer gap, the portion of the lower cover enters the interlayer gap while being curved, and comes into contact with the curtain wall so as to press the inner surface thereof. For this reason, the interlayer closing device can be reliably held in the interlayer gap.

Also, the lower cover, it is not preferable to adopt a configuration that is detachably attached to the lower hook.
According to this configuration, the lower covers having different lengths can be replaced, and the gaps between the layers having various widths can be dealt with.
Further, the heat expandable refractory material, have preferably have a structure further comprising a radiant heat reflecting means.
According to this structure, the radiant heat by the flame at the time of a fire can be reflected in the part of a thermally expansible refractory material, and transmission of a heat can be suppressed.

  According to the interlayer plugging device according to the present invention, since the fireproof fiber block has elasticity, even if the width of the interlayer gap varies due to the bending of the building, it can follow it. In the event of a fire, the heat-expandable refractory material expands due to the heat of the flame, so the lower layer side of the refractory fiber block in the interlayer gap is filled with the expanded heat-expandable refractory material. Thereby, the diffusion of smoke from the lower floor to the upper floor can be effectively prevented.

It is sectional drawing which shows the interlayer blocker concerning a 1st reference form. It is a perspective view which shows the interlayer blocker concerning a 1st reference form. It is sectional drawing which shows the interlayer blocker concerning a 2nd reference form. It is sectional drawing which shows the interlayer blocker concerning a 3rd reference form. It is sectional drawing which shows the interlayer blocker concerning 1st Embodiment. It is sectional drawing which shows the interlayer blocker concerning 2nd Embodiment. It is sectional drawing which shows the interlayer blocker concerning 3rd Embodiment. It is a schematic block diagram which shows the procedure which arrange | positions the interlayer blocker concerning 3rd Embodiment in an interlayer gap. It is sectional drawing which shows the state which has arrange | positioned the interlayer closing apparatus which concerns on 3rd Embodiment in the wide interlayer gap. It is sectional drawing which shows the interlayer blocker concerning 4th Embodiment.

(First reference form)
Before describing the interlayer closing device 2 according to the present invention, first, the interlayer gap S will be described with reference to FIG.
In general, the outer wall of a high-rise building is formed by continuously arranging curtain walls 4, while the floor material 8 at each level is formed from concrete and is supported by, for example, a beam made of H-section steel 6. ing. Here, in order to ensure a flexible structure of the high-rise building, a predetermined gap, that is, an interlayer gap S, is provided between the inner surface 10 of the curtain wall 4 and the end surface 12 of the flooring 8 facing the inner surface 10. Is provided.

The interlayer closing device 2 is disposed in the interlayer gap S, and prevents fire and smoke from being transmitted from the lower floor 14 to the upper floor 16 through the interlayer gap S when a fire occurs.
Such an interlayer closing device 2 includes a fireproof fiber block 18 that closes the interlayer gap S, and this fireproof fiber block 18 functions as a core material of the interlayer closing device 2. Specifically, as shown in FIG. 2, the refractory fiber block 18 has a long rectangular parallelepiped shape, and the aggregate 20 in which the refractory fibers are laminated is entirely covered with a covering material 22. In addition, although rock wool is common as a fireproof fiber, ceramic fiber, glass wool, etc. can also be used.

  The fireproof fiber block 18 includes an upper surface 24 on the upper floor 16 side, a lower surface 26 on the lower floor 14 side, an inner surface 30 on the flooring 8 side, an outer surface 32 on the curtain wall 4 side, and both end surfaces spaced in the longitudinal direction L. 34. Here, the width between the inner surface 30 and the outer surface 32 is slightly larger than the width of the interlayer gap S, and the height between the upper surface 24 and the lower surface 26 is approximately half of the height of the flooring 8. It is. And the fireproof fiber block 18 has the characteristic excellent in the elasticity of the width direction W especially. Therefore, when the refractory fiber block 18 is disposed in the interlayer gap S, the refractory fiber block 18 is compressed in the width direction W.

The fireproof fiber block 18 is provided with a latch 36 on the inner surface 30 side. The hook 36 allows the fireproof fiber block 18 to be cantilevered to the flooring 8 and facilitates the vertical positioning of the fireproof fiber block 18 with respect to the interlayer gap S.
More specifically, the hook 36 is made of a thin plate made of synthetic resin such as polypropylene used for general building materials, and has a substantially S-shape as shown in FIG. The lower and upper hooks 40 and 42 extend in opposite directions from the lower and upper edges of the side cover 38. The side cover 38 covers the entire inner side surface 30 of the fireproof fiber block 18 and is bonded to the inner side surface 30. The lower hook 40 has an engaging claw 48 that extends partway along the lower surface 26 of the refractory fiber block 18 toward the curtain wall 4 and faces upward at the tip. The lower hook 40 supports the refractory fiber block 18 from the lower side in a state where the engaging claw 48 is bitten into the lower surface 26 of the refractory fiber block 18.

On the other hand, the upper hook 42 extends along the upper surface 28 of the flooring 8 and is hooked on the upper surface 28. That is, the refractory fiber block 18 is hooked on the floor material 8 by the upper hook 42 of the hook 36. In addition, if the upper hook 42 is bonded to the flooring 8 and fixed, the displacement of the refractory fiber block 18 in the longitudinal direction L can be prevented.
Furthermore, the interlayer closing device 2 includes a thermally expandable refractory material 44 on the lower surface 26 of the refractory fiber block 18. When this heat-expandable refractory material 44 is heated to about 200 ° C. or higher, it starts thermal expansion and forms a strong heat insulating layer. The expansion coefficient of the heat-expandable refractory material 44 is about 5 to 40 times. Specifically, a sheet-like thermally expandable fire resistant rubber (hereinafter simply referred to as “thermally expanded rubber”) 44 is used as the thermally expandable fire resistant material 44. The thermal expansion rubber 44 has an adhesive layer on one surface, and is bonded to the lower surface 26 of the refractory fiber block 18 via the adhesive layer, and covers the entire lower surface 26.

Here, the installation and function of the interlayer closing device 2 will be described in detail below.
The operator pushes the interlayer closing device 2 into the interlayer gap S from above while compressing the fireproof fiber block 18 and the thermally expanded rubber 44 in the width direction. In this pushing process, when the upper hook 42 of the latching tool 36 is hooked on the upper surface 28 of the flooring 8, further pushing is restricted, so that the interlayer closing device 2 is placed at a predetermined position of the interlayer gap S. Can be installed. When the installation of the interlayer closing device 2 is completed in this way, the refractory fiber block 18 has its upper surface 24 positioned substantially flush with the upper surface 28 of the flooring 8, while being compressed together with the thermal expansion rubber 44 in its width direction. It has become. Therefore, the refractory fiber block 18 in the interlayer gap S pushes the inner surface 10 of the curtain wall 4 by its restoring force, and also pushes the end surface 12 of the flooring 8 through the hook 36. That is, the refractory fiber block 18 generates a biasing force in a direction in which the curtain wall 4 and the flooring 8 are separated from each other, and is in a state of being stretched toward both sides in the width direction in the interlayer gap S.

As is apparent from FIG. 1, after the interlayer closing device 2 is installed, the interlayer gap S is in a state in which almost half of the upper side of the interlayer gap S is closed by the interlayer closing device 2 and the lower half is left in the space. It is in.
Since the interlayer closing device 2, that is, the refractory fiber block 18 and the thermally expanded rubber 44 has elasticity in the width direction as described above, the fluctuation of the width of the interlayer gap S accompanying the bending of the building is suppressed. It does not allow, and the curtain wall 4 and the flooring 8 are not boundly connected. As a result, generation of abnormal noise from the interlayer plugging device 2 and damage to the curtain wall 4 or the flooring 8 are effectively prevented.

On the other hand, if a fire occurs and heat is applied to the thermal expansion rubber 44 of the interlayer closing device 2, the thermal expansion rubber 44 expands and instantly fills the space left in the lower half of the interlayer gap S. The flow of smoke from the lower floor 14 to the upper floor 16 is effectively prevented. Moreover, since both the refractory fiber block 18 and the thermal expansion rubber 44 have excellent heat shielding properties and flame shielding properties, the fire resistance of the interlayer closing device 2 is sufficiently ensured.
Next, in describing the second reference form, the third reference form, and the first to fourth embodiments, the same reference numerals are used for those that exhibit the same functions as the constituent members and parts already described. A description thereof will be omitted.

(Second reference form)
FIG. 3 shows an interlayer closing device 50 of the second reference form. The interlayer closing device 50 is different from the first reference embodiment only in that the shape of the hook 36 and the form of the thermal expansion rubber 44 are changed.
The latch 52 of the second reference form has a T-shaped cross section. More specifically, the side cover 38 of the hook 52 does not cover the entire inner side surface 30 of the refractory fiber block 18, and extends downward from its upper edge to about half the height of the inner side surface 30. An upper hook 56 opposite to the upper hook 42 is added to the upper edge of the side cover 38, and the upper hook 56 extends along the upper surface 24 of the fireproof fiber block 18 toward the center in the width direction. The lower hook 40 is omitted. Here, the side cover 38 and the upper hook 56 are bonded to the fireproof fiber block 18, and the upper hook 42 is bonded to the flooring 8.

The thermal expansion rubber 54 has a U-shaped cross section covering the lower part of the refractory fiber block 18 and partially covers not only the entire lower surface 26 of the refractory fiber block 18 but also the inner side surface 30 and the outer side surface 32 of the refractory fiber block 18. Yes. The U-shape includes a U-shape that covers three surfaces of the lower surface 26, the inner surface 30, and the outer surface 32 of the fireproof fiber block 18.
As described above, the thermal expansion rubber 54 has portions that are in contact with the inner surface 10 of the curtain wall 4 and the end surface 12 of the flooring 8, so that in the event of a fire, heat is also applied to both sides in the width direction of the refractory fiber block 18. The expansion rubber 54 expands. Therefore, even if there are slight gaps between the curtain wall 4 and the flooring 8 on both sides in the width direction of the fireproof fiber block 18, these gaps are blocked by the thermal expansion rubber 54, so that the smoke Can be suppressed.
The thermal expansion rubber 54 may cover the entire lower surface 26, inner side surface 30, and outer side surface 32 of the refractory fiber block 18.

(Third reference form)
FIG. 4 shows an interlayer closing device 58 of the third reference form. This interlayer plugging device 58 is different from the second reference embodiment only in that an adhesive 60 for fixing the refractory fiber block 18 to the flooring 8 is provided in place of the hook 52.
Such interlayer closing device 58 of the third reference embodiment, the number of components is reduced, which is economical.

(First Embodiment)
Figure 5 shows the inter-closing device 62 of the first embodiment. The interlayer closing device 62 is different from the first reference embodiment only in that the form of the latch 36 and the form of the thermal expansion rubber 44 are changed.
The latching tool 64 of the first embodiment corresponds to the latching tool 36 to which an upper hook 68 is added. Specifically, the upper hook 68 extends along the upper surface 24 of the refractory fiber block 18 toward the center in the width direction, and integrally has a downward engagement claw 70 at its tip. The upper hook 68 is overlapped with the upper surface 24 of the refractory fiber block 18 with the engaging claw 70 biting into the upper surface 24 of the refractory fiber block 18, and cooperates with the lower hook 40 to hold the refractory fiber block 18 from above and below. To do. As described above, the latch 64 has excellent retaining properties of the fireproof fiber block 18 because the engaging claws 48 and 70 bite into the fireproof fiber block 18 respectively.

  Further, the interlayer plug device 62 can include an adhesive tape 72 that secures the latch 64 to the refractory fiber block 18. Specifically, the adhesive tape 72 is attached to the entire upper surface 24 of the fireproof fiber block 18 including the upper hooks 42 and 68. Here, the adhesive tape 72 is not particularly limited, but an aluminum glass cloth tape (hereinafter simply referred to as an aluminum tape) 72 having excellent fire resistance and high radiant heat reflectance is preferably used.

On the other hand, the composite thermal expansion sheet 76 of the first embodiment has a two-layer structure, and includes a thermal expansion rubber layer 66 that forms a surface facing downward, and a urethane layer 74 that is attached to the back surface of the thermal expansion rubber layer 66. The urethane layer 74 functions as a core for holding the composite thermally expanded sheet 76 in a certain shape even if the thermally expanded rubber sheet layer 66 is thin.

  That is, the composite thermal expansion sheet 76 is attached to the lower surface 26 of the refractory fiber block 18 in a state of being bent into a semi-cylindrical shape that protrudes downward, and covers the entire area of the lower surface 26. Even if the composite thermal expansion sheet 76 is curved as described above, the curved state of the composite thermal expansion sheet 76 can be stably maintained due to the presence of the urethane layer 74.

  More specifically, the composite thermal expansion sheet 76 has a width wider than the width W of the refractory fiber block 18 when in a flat state. Therefore, when both side edges 78 and 80 of the composite thermal expansion sheet 76 are fixed to the fireproof fiber block 18 in a state of being in contact with both side edges of the lower surface 26 of the fireproof fiber block 18 directly or via the lower hook 40, the composite thermal expansion is achieved. The sheet 76 is curved downward into a convex semi-cylindrical shape. Both side edges 78 and 80 of the composite thermal expansion sheet 76 are fixed to the refractory fiber block 18 side with an aluminum tape 72 similar to the aluminum tape 72 attached to the entire area of the upper surface 24 of the refractory fiber block 18. Reference numeral 88 indicates an internal space secured between the lower surface 26 and the back surface of the composite thermal expansion sheet 76.

According to the interlayer sealing device 62 of the first embodiment as described above, when the composite thermal expansion sheet 76, that is, the thermal expansion rubber layer 66 is heated in the event of a fire, the thermal expansion rubber layer 66 is shown in FIG. As indicated by a plurality of arrows, the space expands radially, and the space secured below the refractory fiber block 18 in the interlayer gap S can be filled. In this case, even if the both sides of the refractory fiber block 18 are not covered with the thermal expansion rubber, the interlayer gap S can be tightly closed by the expanding thermal expansion rubber layer 66, and the diffusion of smoke can be prevented more easily and reliably. be able to.

  In the present embodiment, the composite thermal expansion sheet 76 is attached to the lower surface 26 of the refractory fiber block 18 in a state of being bent into a semi-cylindrical shape that protrudes downward. However, the composite thermal expansion sheet 76 may have a U-shape or a U-shape that is convex downward.

(Second Embodiment)
FIG. 6 shows an interlayer closing device 63 of the second embodiment. This interlayer plugging device 63 is different from the first embodiment only in that the form of the composite thermal expansion sheet 76 is changed.
The composite thermal expansion sheet 86 of the second embodiment further includes an aluminum tape 73 that covers the entire surface of the thermal expansion rubber layer 66.

According to the present embodiment, when a fire occurs, the aluminum tape 73 can reflect the radiant heat due to the flame from the lower floor, and can delay the transfer of heat to the thermal expansion rubber layer 66. Thereafter, when the temperature of the thermal expansion rubber layer 66 reaches a predetermined temperature, the thermal expansion rubber layer 66 expands.
The aluminum tape 73 can also be used as the above-mentioned adhesive tape (aluminum tape) 72 by extending both side edges.

( Third embodiment)
FIG. 7 shows an interlayer closing device 90 of the third embodiment. This interlayer closing device 90 is different from the first embodiment only in that the configuration of the latch 64 and the arrangement of the thermal expansion rubber layer 66 are changed.

The latching tool 92 of the third embodiment corresponds to a latching tool 64 to which a flexible lower cover 96 is added. The lower cover 96 is made of an elastic thin plate, the base end portion 98 is integrally coupled to the lower surface of the lower hook 40, and the distal end 100 is a free end. More specifically, the base end portion 98 of the lower cover 96 is positioned with a predetermined distance from the lower edge of the side cover 38. When the lower cover 96 is in a free state, the lower cover 96 is curved downward from the lower hook 40 and extends toward the outer surface 32 of the refractory fiber block 18 and has a downwardly convex curved shape. A folded piece 104 is integrally formed at the tip 100 of the lower cover 96, the folded piece 104 protrudes toward the fireproof fiber block 18, and the protruding end is further folded toward the inner surface of the lower cover 96. . The distance from the base end portion 98 to the tip end 100 of the lower cover 96 is somewhat longer than the width of the interlayer gap S. Therefore, when the lower cover 96 is disposed in the interlayer gap S in a state where the folded piece 104 is in contact with the lower surface 26 of the fireproof fiber block 18, the lower cover 96 is arranged between the tip 100 of the lower cover 96 and the curtain wall 4. In a state in which a predetermined distance is secured between the base end portion 98 of the 96 and the flooring 8, the lower cover 96 is curved into a semicylindrical shape that is convex downward.

The thermal expansion rubber layer 94 of the third embodiment is formed entirely on the lower surface of the lower cover 96 and has a thickness sufficient to close the above-described gap.
When the lower cover 96 having such a thermal expansion rubber layer 94 is fitted into the interlayer gap S, the step between the thermal expansion rubber layer 94 and the side cover 38 is eliminated, and the side cover 38 and the lower cover 96 are smoothly connected. For this reason, when the interlayer closing device 90 is disposed in the interlayer gap S, the vicinity of the base end portion 98 of the lower cover 96 can be prevented from being caught by the corner of the flooring 8.

Next, the installation procedure of the interlayer closing device 90 according to the third embodiment will be described in detail below with reference to FIG.
As shown in FIG. 8A, the operator carries the interlayer closing device 90 in the vicinity of the interlayer gap S, and compresses and deforms the refractory fiber block 18 from both sides in the width direction as indicated by arrows A and B. . In this state, as shown in FIG. 8 (b), after the front end 100 of the lower cover 96 is brought into contact with the inner surface 10 of the curtain wall 4 via the thermal expansion rubber layer 94, the portion on the base end portion 98 side is moved. The interlayer closing device 90 is pushed into the interlayer gap S while being brought into contact with the corners of the flooring 8 via the thermal expansion rubber layer 94. In this pushing process, the lower cover 96 is gradually bent into a semi-cylindrical shape with its elastic deformation. 8C, when the upper hook 42 contacts the upper surface 28 of the flooring 8, the upper surface 24 of the refractory fiber block 18 in the interlayer closing device 90 is flush with the upper surface 28 of the flooring 8. On the other hand, the folded piece 104 of the lower cover 96 comes into contact with the lower surface 26 of the refractory fiber block 18, and the thermal expansion rubber layer 94 is formed in a semi-cylindrical shape together with the lower cover 96 so as to bulge toward the lower lower floor side. .

  In the present embodiment, the lower cover 96 has elasticity, and the tip end 100 exerts an urging force in the direction in which the curtain wall 4 is pressed. Therefore, the interlayer closing device 90 is more reliably held in the interlayer gap S. be able to.

Here, as shown in FIG. 9, the width of the interlayer gap S may be wider than the design value. In this case, a slight gap 101 is generated between the outer surface 32 of the refractory fiber block 18 and the inner surface 10 of the curtain wall 4. However, according to the interlayer closing device 90 of the present embodiment, the lower cover 96 has elasticity, can always contact the curtain wall 4 at its tip 100, and the folded piece 104 has a certain length. If this is the case, it is reliably spanned between the tip 100 and the lower surface 26 of the refractory fiber block 18, and the tip 100 of the lower cover 96 does not enter the gap 101. The lower cover 96, that is, the thermal expansion rubber layer 94 is It becomes a favorable semi-cylindrical shape and can close the interlayer gap S.
In the third embodiment, the latch 92 and the fireproof fiber block 18 are fixed with an aluminum tape (not shown), and the entire outer surface of the thermal expansion rubber layer 94 is covered with the aluminum tape 73. You may do it.

( Fourth embodiment)
FIG. 10 shows an interlayer closing device 112 according to the fourth embodiment. This interlayer plugging device 112 is different from the third embodiment only in that the form of the hook 92 is changed.
The latch 114 in the fourth embodiment includes a detachable lower cover 96. Specifically, in the hook 114, a rail 120 is integrally protruded downward from the base of the lower hook 40, and the rail 120 forms a rail groove 115 extending along the longitudinal direction of the refractory fiber block 18. . Specifically, the rail 120 is composed of two rail halves 116, which are spaced apart from each other in the width direction of the refractory fiber block 18 to determine the groove width of the rail grooves 115. The lower ends are bent in directions approaching each other to form rail bottoms 122 of the rail grooves 115, respectively. Here, a gap 123 having a predetermined interval is secured between the rail bottoms 122, and the gap 123 is slightly wider than the thickness of the lower cover 96.

On the other hand, the base end portion 98 of the lower cover 96 has a T-shape in a cross section, and has a pair of guide protrusions 124 and 124 protruding from both the front and back surfaces of the lower cover 96.
Therefore, the lower cover 96 is attached to the lower hook 40 by the pair of guide protrusions 124, 124 of the lower cover 96 being inserted into the rail groove 115 through the gap 123. According to this aspect, the lower cover 96 and the thermal expansion rubber layer 94 can be easily replaced.

Here, if several types of lower covers 96 having different lengths are prepared, an interlayer closing device can be disposed in the interlayer gap S even if the width of the interlayer gap S is different.
In the above-described embodiment, the interlayer closing device used for the interlayer gap S between the curtain wall and the floor material has been described. However, the present invention is not limited to this mode, and the interlayer of the present invention is not limited thereto. The closing device can also be applied to the interlayer gap S formed using other wall panels such as a precast concrete wall in addition to the curtain wall.

2 Interlayer closing device 4 Curtain wall 8 Floor material 10 Inner surface 12 End surface 14 Lower floor 16 Upper layer 18 Fire-resistant fiber block 20 Fire-resistant fiber assembly 22 Cover material 24 Upper surface 26 Lower surface 30 Inner surface 32 Outer surface 36 Latch 38 Side cover 40 Lower hook 42 Upper hook 44 Thermally expandable fire resistant rubber 66 Thermally expanded rubber layers 72 and 73 Aluminum glass cloth tape (aluminum tape)
76 Composite thermal expansion sheet 96 Lower cover 115 Rail groove 120 Rail 124 Guide projection S Interlayer gap

Claims (6)

In an interlayer closing device for closing an interlayer gap between an inner surface of a wall panel forming an outer wall of a building and a floor material of each level of the building,
A refractory fiber block to be placed in the interlayer gap to close the interlayer gap, the refractory fiber block made of an aggregate of fireproof fibers and having elasticity, and
A thermally expandable refractory material that is disposed on at least the lower layer side of the refractory fiber block and expands when heated ;
A hooking means for hooking the flooring material while holding the fireproof fiber block;
It has
The latching means includes a latching tool,
The hook is
An upper hook hooked on the upper surface of the flooring;
A side cover extending integrally from the upper hook along the side surface of the refractory fiber block and coupled to the refractory fiber block;
An upper and a lower hook respectively extending integrally from an upper edge and a lower edge of the side cover and sandwiching the refractory fiber block from above and below, each having a locking claw that bites into the refractory fiber block at the tip;
Inter closing device, which comprises a. In an interlayer closing device for closing an interlayer gap between an inner surface of a wall panel forming an outer wall of a building and a floor material of each level of the building,
A refractory fiber block to be placed in the interlayer gap to close the interlayer gap, the refractory fiber block made of an aggregate of fireproof fibers and having elasticity, and
A thermally expandable refractory material that is disposed on at least the lower layer side of the refractory fiber block and expands when heated;
A hooking means for hooking the flooring material while holding the fireproof fiber block;
It has
The latching means includes a latching tool,
The hook is
An upper hook hooked on the upper surface of the flooring;
A side cover extending integrally from the upper hook along the side surface of the refractory fiber block and coupled to the refractory fiber block;
An upper and a lower hook respectively extending integrally from an upper edge and a lower edge of the side cover and sandwiching the refractory fiber block from above and below, each having a locking claw that bites into the refractory fiber block at the tip;
Contains
The thermally expandable refractory material is
The shape which covers the lower part seeing in the cross section of the said refractory fiber block is made.
An interlayer plugging device characterized by the above. In an interlayer closing device for closing an interlayer gap between an inner surface of a wall panel forming an outer wall of a building and a floor material of each level of the building,
A refractory fiber block to be placed in the interlayer gap to close the interlayer gap, the refractory fiber block made of an aggregate of fireproof fibers and having elasticity, and
A thermally expandable refractory material that is disposed on at least the lower layer side of the refractory fiber block and expands when heated;
A hooking means for hooking the flooring material while holding the fireproof fiber block,
The latching means includes a latching tool,
The hook is
An upper hook hooked on the upper surface of the flooring;
A side cover extending integrally from the upper hook along the side surface of the refractory fiber block and coupled to the refractory fiber block;
An upper and a lower hook each extending integrally from the upper and lower edges of the side cover and sandwiching the fireproof fiber block from above and below, each having a locking claw that bites into the fireproof fiber block at the tip,
The thermally expandable refractory material is
Convex shape downward from the fireproof fiber block
An interlayer plugging device characterized by the above. The hook is
A lower cover that extends downward from the lower edge of the side cover and is elastically deformable. When an interlayer closing device is disposed in the interlayer gap, the refractory fiber block has a curved shape that protrudes downward. A lower cover covering from below is further provided.
The heat expandable refractory material, the interlayer closing device according to any one of claims 1-3, characterized in that covers the lower surface of the lower cover. The interlayer closing device according to claim 4 , wherein the lower cover is detachably attached to the lower hook. The heat expandable refractory material, further interlayer closing device according to any one of claims 1 to 5, characterized in that it comprises a radiant heat reflecting means.

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