JP7364518B2 - fittings - Google Patents

Description

The present invention relates to fittings having a sliding door body and a door edge side vertical frame provided with a vertical groove portion that accommodates the door edge portion of the door body when the door body is closed.

Recently, there has been a demand for improved fire protection performance for sliding door fittings. Sliding door fittings have a sliding door body. In order to improve the fire protection performance of sliding door fittings, Patent Document 1 proposes providing a thermally expandable member on the entire surface of the vertical groove that accommodates the door tip of the door when the door is closed. . With this fitting, in the event of a fire, the action of the thermally expandable member can prevent a gap between the door tip of the door body and the vertical frame.

Japanese Patent Application Publication No. 2015-169024

By the way, in the fittings described in Patent Document 1, since the thermally expandable member is provided on the entire surface of the vertical groove, in the event of a fire, the expansion of the thermally expandable member pushes out the front facing surface of the door body, causing an obstruction. There is a concern that flammability may decrease.

The present invention has been made in view of the above problems, and an object of the present invention is to provide fittings that can improve fire prevention performance.

In order to solve the above-mentioned problems and achieve the objects, a fitting according to one aspect of the present invention includes a sliding door body and a vertical groove portion that accommodates the door tip of the door body when the door body is closed. a vertical frame on the door end side, the vertical groove portion being formed on the vertical frame facing surface opposite to the door end side facing surface of the door body, and on the outdoor side of the vertical frame facing surface. a first groove side surface that projects in the sliding direction of the door body; and a second groove side surface that is formed on the indoor side of the vertical frame prospective surface and projects in the sliding direction of the door body; A first thermally expandable material is provided between the first extended surface and the first groove side at a location other than between the first extended surface on the outdoor side surface and the second extended surface on the indoor side surface of the door body, and between the first extended surface and the first groove side surface. A member is provided, and a second thermal expansion member is provided at a location in the longitudinal groove excluding between the first extension surface and the second extension surface, and between the second extension surface and the second groove side surface. one surface of the first thermally expandable member is oriented toward a first gap formed between the first groove side surface and the outdoor side surface when the door body is closed; One surface of the second thermally expandable member is oriented toward a second gap formed between the second groove side surface and the indoor side surface when the door body is closed.

In the fittings according to the present invention, the first thermally expandable member is provided between the first extension surface and the first groove side surface on the outdoor side surface of the door body, and the second thermally expandable member is provided on the indoor side surface of the door body. is provided between the second extension surface and the second groove side surface. Further, the first thermally expandable member and the second thermally expandable member are provided at locations other than between the first extended surface and the second extended surface. One surface of the first thermally expandable member is oriented toward a first gap formed between the first groove side surface and the outdoor side surface when the door body is closed, and one surface of the second thermally expandable member is oriented toward the first gap formed between the first groove side surface and the outdoor side surface when the door body is closed. It is oriented toward a second gap formed between the second groove side surface and the indoor side surface when the door body is closed. Therefore, substantially the entire amount of the expanded first thermally expandable member and second thermally expandable member expands from the first gap and the second gap, and does not push out the door body. In addition, the door body has a flame-blocking effect on both sides in the direction of view, further improving fire prevention performance.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of fittings according to an embodiment of the present invention, viewed from the outside. FIG. 2 is a longitudinal cross-sectional view taken along line II to II in FIG. 1. FIG. FIG. 2 is a cross-sectional view of the door end side vertical frame of the frame body and the door end side vertical end of the door body. 2 is a cross-sectional view taken along line IV to IV in FIG. 1. FIG. FIG. 2 is a cross-sectional view of the door end side vertical frame of the frame body and the door end side vertical end portion of the door body in an expanded state of the thermally expandable member. FIG. 2 is a schematic diagram showing the fittings in a state where the thermally expandable member is expanded, in which (a) is a schematic vertical cross-sectional view with the door body warped toward the outdoor side, and (b) is a schematic vertical cross-sectional view with the door body warped toward the indoor side. It is a schematic vertical sectional view of the state, and (c) is a schematic front view of the state where the vertical end of the door body on the door end side is along the door end side. It is a cross-sectional view of the door end side vertical frame of a frame body, and the door end side vertical end part of a door body in fittings concerning a modification. It is a cross-sectional view of the door end side vertical frame of the frame of the fittings and the door end side vertical end of the door body according to a modified example when the thermally expandable member is in an expanded state.

EMBODIMENT OF THE INVENTION Below, one Embodiment of the fittings concerning this invention is described in detail based on drawing. Note that the present invention is not limited to this embodiment.

FIG. 1 is a front view of fittings 10 according to an embodiment of the present invention, viewed from the outside. As shown in FIG. 1, the fitting 10 is a single sliding door type and includes a frame 12 and a door body 14. The fitting 10 opens and closes a rectangular opening provided in a wall by sliding the door body 14 in the left-right direction in FIG. The area indicated by the imaginary line 16 in the left half of FIG. 1 may be a part of the wall or may be a fitted panel. Further, the area indicated by the imaginary line 16 may be a door body paired with the door body 14. In other words, the fittings 10 may be double sliding doors. In this case, the sliding doors may have three or more sliding doors.

The frame body 12 has an upper frame 12a, a lower frame 12b, a door end side vertical frame 12c, and a door end side vertical frame 12d. The substantially right half of the upper frame 12a, the lower frame 12b, the door end side vertical frame 12c, and the door end side vertical frame 12d form a rectangular frame that surrounds a rectangular opening provided in the wall. The left half of the upper frame 12a protrudes to the left from the position of the door end side vertical frame 12d, and its protruding length is approximately equal to the width of the door body 14. The lower frame 12b of this embodiment connects the door end side vertical frame 12c and the door end side vertical frame 12d, and although it does not protrude to the left side of the door end side vertical frame 12d, the upper frame It may protrude to the left side similarly to 12a. A handle 18 is provided on the door body 14 near the vertical end portion 14c on the door tip side. The handle 18 is provided on the indoor side and the outdoor side of the door body 14.

In this application, the expected direction refers to the indoor/outdoor direction of the fittings 10 (indicated by arrow Z in the figure; in FIG. 1, the direction perpendicular to the plane of the paper). The prospective surface refers to a surface extending along the prospective direction. The finding direction is the direction perpendicular to the expected direction, and in the case of a vertically elongated vertical frame 12c, etc., it refers to the left-right direction (direction indicated by arrow X in the figure) perpendicular to the longitudinal direction. In the case of the upper frame 12a or the like that is elongated in the left-right direction, this refers to the up-down direction (direction indicated by arrow Y in the figure) orthogonal to the longitudinal direction thereof. The locating surface refers to the surface along the locating direction.

FIG. 2 is a longitudinal cross-sectional view taken along line II to II in FIG. FIG. 3 is a cross-sectional view of the door end side vertical frame 12c of the frame body 12 and the door end side vertical end portion 14c of the door body 14. FIG. 4 is a cross-sectional view taken along line IV to IV in FIG. 1.

First, the door body 14 will be explained with reference to FIGS. 2 to 4.
The upper end portion 14a of the door body 14 is provided with a downwardly opened U-shaped aggregate 14aa and a U-shaped reinforcing member 14ab provided inside the aggregate 14aa. The lower end portion 14b of the door body 14 is provided with an aggregate 14ba and a guide material 14bb. The guide member 14bb has a U-shaped portion that opens downward and forms a guide groove 14bc. A gap is ensured between the aggregate 14ba and the guide material 14bb.

The vertical end 14c of the door body 14 has a U-shaped aggregate 14ca opened toward the door end, a frame 14cb that covers the outdoor side of the aggregate 14ca, and a frame 14cc that covers the indoor side of the aggregate 14ca. An edge material 14cd forming a door tip side end portion is provided. The frame 14cb and the frame 14cc are made of, for example, a resin material. The edge material 14cd is, for example, an extruded material made of a metal material such as aluminum.

The edge material 14cd is provided with a plurality of protruding pieces 14ce that protrude toward the door end, and the protruding pieces 14ce ensure a gap 14cf between the edge material 14cd and the aggregate 14ca. Inside the gap 14cf, on the surface of the edge material 14cd, a thermally expandable member 14cg is provided near the end on the outdoor side, and a thermally expandable member 14ch is provided near the end on the indoor side. The thermally expandable members 14cg and 14ch are disposed along the entire length of the longitudinal end portion 14c on the door end side. When the fittings 10 reach a high temperature state, the thermally expandable members 14cg and 14ch expand and fill the gap 14cf. The thermally expandable members 14cg and 14ch have the same structure as the thermally expandable members 50, 52, 14df and 14dg described later.

A U-shaped aggregate 14da opening toward the door end and a U-shaped reinforcing member 14db provided inside the aggregate 14da are provided at the door end side vertical end 14d of the door body 14. . Further, a frame member 14dc is provided at the door end side vertical end portion 14d to cover the door end direction and slightly protrude toward the indoor side. The aggregate 14da, the reinforcing material 14db, and the frame material 14dc are fixed with screws. A smoke return 14dd that protrudes toward the door end is formed at the indoor end of the frame member 14dc. A reinforcing material 14de is provided on the smoke return 14dd. A thermally expandable member 14df is disposed on the surface of the frame member 14dc facing the smoke return 14dd so as to face the indoor direction. A thermally expandable member 14dg is disposed between this opposing surface and the smoke return 14dd, oriented toward the door. The door end side vertical end portion 14d and the door end side vertical frame 12d are in a matching position.

The door body 14 is provided with a heat insulating material 14e in a region surrounded by aggregate on all four sides. The aggregate is, for example, an extruded shape of a metal material such as aluminum. A surface material is provided on the outdoor side surface 14f and the indoor side surface 14g of the door body 14, and has a flush structure. The door body 14 may have a structure other than a flush structure.

Next, the frame 12 will be explained with reference to FIGS. 2 to 4.
The upper frame 12a of the frame body 12 includes a first frame member 12aa, a second frame member 12ab, a third frame member 12ac, a fourth frame member 12ad, and a fifth frame member 12ae. A space 12ag that opens downward is formed in the upper frame 12a. The upper end 14a of the door body 14 is inserted into the lower part of the space 12ag.

A rail 20 having a substantially L-shaped cross section is provided in the space 12ag. The rail 20 extends over almost the entire length of the upper frame 12a in the longitudinal direction. A guide protrusion at the tip of the rail 20 guides a rotatable hanging roller 22. The upper end 14a of the door body 14 is connected to the hanging roller 22 by a connecting member 24. A plurality of hanging rollers 22 and connecting members 24 are provided along the longitudinal direction of the upper end portion 14a. A tight material 28 protrudes from the indoor side surface toward the upper end 14a at the lower end of the space 12ag. The tight material 28 and the later-described tight materials 38, 56, and 58 are airtight materials. A brush 30 protrudes from the outdoor side surface at the lower end of the space 12ag toward the upper end 14a.

The lower frame 12b of the frame body 12 is configured by a first frame member 12ba and a second frame member 12bb. The first frame member 12ba constitutes the lower end of the lower frame 12b and is located below the door body 14. The second frame member 12bb is located closer to the indoor side than the lower end portion 14b of the door body 14. A shoelace 32 is fitted into the upper part of the second frame member 12bb. A rotatable guide roller 34 is provided in the lower part of the door body 14 in the first frame member 12ba. The guide roller 34 fits into the guide groove 14bc and guides the lower end portion 14b. The door body 14 is slidable along the X direction (direction perpendicular to the plane of FIG. 2) by the hanging rollers 22 and guide rollers 34. One support column on which the guide roller 34 is provided is provided near where the door end side vertical end portion 14c is located when the door body 14 is fully opened (see FIG. 1). A tight member 38 protrudes from the outdoor side surface of the second frame member 12bb toward the lower end portion 14b.

The door end side vertical frame 12c is constituted by a first frame member 12ca, a second frame member 12cb, and a third frame member 12cc. The first frame member 12ca and the second frame member 12cb are extruded members made of a metal material such as aluminum. The third frame member 12cc is made of, for example, a resin material. The first frame member 12ca constitutes the door end of the door end vertical frame 12c, and is located closer to the door end than the door body 14. The second frame member 12cb is located closer to the indoor side than the door end side vertical end 14c of the door body 14. The third frame member 12cc is held between the first frame member 12ca and the second frame member 12cb.

The first frame member 12ca includes an outdoor side plate 46a, an indoor side plate 46b, an intermediate partition plate 46c, a door end side plate 46d, and a door end side plate 46e. The first frame member 12ca is divided into two sections by a partition plate 46c to ensure appropriate strength. The outdoor side plate 46a protrudes slightly toward the door end side from the connection portion with the door end side plate 46e. This portion is called a protrusion 46aa. The indoor side plate 46b protrudes slightly toward the door end side from the connection portion with the door end side plate 46d.

The door end side vertical frame 12c includes a vertical groove portion 48 that accommodates the door end portion (specifically, a part or all of the door end side vertical end portion 14c) of the door body 14 when the door body 14 is closed. The vertical groove portion 48 includes a vertical frame prospective surface (first mounting surface, second mounting surface) 48a that faces the door end side prospective surface 14h of the door body 14, and a vertical frame prospective surface 48a that extends in the sliding direction of the door body 14 from the vertical frame prospective surface 48a. It includes a protruding first groove side surface 48b and a second groove side surface 48c.

The first groove side surface 48b is a surface on the indoor side of the protrusion 46aa, and is formed on the outdoor side of the vertical frame prospective surface 48a. The second groove side surface 48c is an outdoor side surface of each of the second frame member 12cb and the third frame member 12cc, and is formed on the indoor side of the vertical frame prospective surface 48a. The first groove side surface 48b and the second groove side surface 48c have the same protruding width from the vertical frame prospective surface 48a.

A first thermally expandable member 50 and a second thermally expandable member 52 are provided in the vertical groove portion 48 . The first thermally expandable member 50 and the second thermally expandable member 52 have a thin plate shape. The first thermally expandable member 50 is provided over almost the entire width in the vertical frame prospective surface 48a in the vertical frame prospective direction between the first extended surface 14fx of the outdoor side surface 14f of the door body 14 and the first groove side surface 48b. A surface (one surface) 50a of the first thermally expandable member 50 opposite to the surface attached to the vertical frame prospective surface 48a is formed between the first groove side surface 48b and the outdoor side surface 14f when the door body 14 is closed. the first gap 53 where the

The second thermally expandable member 52 is provided over almost the entire width in the vertical frame prospective surface 48a in the vertical frame prospective direction between the second extension surface 14gx of the indoor side surface 14g of the door body 14 and the second groove side surface 48c. A surface (one surface) 52a of the second thermally expandable member 52 opposite to the surface attached to the vertical frame prospective surface 48a is formed between the second groove side surface 48c and the outdoor side surface 14g when the door body 14 is closed. the second gap 54 where the Note that the first thermally expandable member 50 and the second thermally expandable member 52 are provided at locations other than between the first extended surface 14fx and the second extended surface 14gx.

The first thermally expandable member 50 and the second thermally expandable member 52 are nonflammable or flame-retardant fire-resistant members that expand due to heat. As this kind of thermally expandable members 50 and 52, for example, a thermally expandable graphite-containing foam material can be used. In the present embodiment, elongated thermally expandable members 50 and 52 having a cross-sectional shape with a thin plate thickness relative to the dimension in the width direction are disposed over the entire length of the vertical frame prospective surface 48a. There is. Although not clearly shown in the figure, the respective thermally expandable members 50 and 52 are adhered with double-sided tape or adhesive, so that they will not accidentally fall off from the vertical frame facing surface 48a.

A first tight member 56 is provided on the first groove side surface 48b of the vertical groove portion 48 and projects in the direction of the outdoor side surface 14f of the closed door body 14. The first tight material 56 closes the first gap 53 and covers the first thermally expandable member 50 . A C-shaped storage portion 46f is formed at the tip of the first groove side surface 48b. The base of the first tight member 56 is stored and fixed in the storage portion 46f. The storage portion 46f slightly protrudes in the finding direction from the tip of the protrusion 46aa. Approximately half of the first thermally expandable member 50 on the outdoor side faces the storage section 46f.

A second tight material 58 is provided on the second groove side surface 48c of the vertical groove portion 48 and protrudes in the direction of the indoor side surface 14g of the closed door body 14. The second tight material 58 closes the second gap 54 and covers the second thermally expandable member 52 . The second tight material 58 is composed of two pieces (indicated by reference numerals 58a and 58b in FIG. 3) having different lengths. A C-shaped storage portion 46g is formed at the tip of the second groove side surface 48c. The base of the second tight member 58 is stored and fixed in the storage portion 46g. The storage portion 46g is formed along the second groove side surface 48c.

The first thermally expandable member 50 is covered with the first tight material 56, and the second thermally expandable member 52 is covered with the second tight material 58, which is suitable for design and prevents accidental touching. Ru. Further, even if the first tight material 56 and the second tight material 58 are not provided, the first thermally expandable member 50 and the second thermally expandable member 52 are connected to the first extended surface 14fx of the outdoor side surface 14f and the indoor side surface 14g. They are not provided between them and the second extension surface 14gx, and are appropriately thin and inconspicuous. Since the first thermally expansible member 50 and the second thermally expansible member 52 are provided at both corners of the vertical groove portion 48, even if the first tight material 56 and the second tight material 58 are not present, there is no need to worry. hard to touch.

The door end side vertical frame 12d of the frame body 12 includes a frame member 12da. A smoke return 12db protruding toward the door end is formed at the outdoor end of the frame member 12da. A pair of smoke return 12db and smoke return 14dd are arranged facing each other.

Next, the operation of the fitting 10 configured in this way will be explained.
FIG. 5 is a cross-sectional view of the door end side vertical frame 12c of the frame body 12 and the door end side vertical end portion 14c of the door body 14 in a state where the thermally expandable members 50, 52 are expanded.

When the fittings 10 are exposed to high temperatures, the first tight material 56 and the second tight material 58 will disappear or melt, and the thermally expandable members 50 and 52 will expand. In FIG. 5, the expanded state of the first thermally expandable member 50 is indicated by reference numeral 50x, and the expanded state of the second thermally expandable member is indicated by reference numeral 52. The thermally expandable members 50 and 52 are provided on the vertical frame facing surface 48a, and since the surfaces 50a and 52a are oriented toward the gaps 53 and 54, the direction of expansion is toward the outdoor side surface 14f and the direction of expansion as shown by arrow A. It is almost parallel to the indoor side surface 14g, and is oriented toward the door end.

Further, since the first groove side surface 48b is provided in the vertical groove portion 48, the first thermally expandable member 50 does not bulge toward the outdoor side. Since the vertical groove portion 48 is provided with the second groove side surface 48c, the second thermally expandable member 52 does not bulge toward the indoor side. Therefore, almost all of the expanded thermally expandable members 50x and 52x spread along the outdoor side surface 14f and the indoor side surface 14g, and bulge sufficiently in the direction of arrow A, so that the outdoor side and the indoor side of the door body 14 are shielded. This makes it possible to prevent, for example, a situation in which flames on the outdoor side reach the indoor side through the vertical groove portion 48.

In addition, the first thermally expandable member 50 connects to the first extension surface 14fx of the outdoor side surface 14f of the door body 14 at a location other than between the first extension surface 14fx and the second extension surface 14gx on the vertical frame prospective surface 48a. Since it is provided between the first groove side surface 48b and the first thermally expandable member 50x, the expanded first thermally expandable member 50x hardly comes into contact with the door end side prospective surface 14h. Similarly, the second thermally expandable member 52 extends to the second extension surface 14gx of the indoor side surface 14g of the door body 14 at a location other than between the first extension surface 14fx and the second extension surface 14gx on the vertical frame prospective surface 48a. and the second groove side surface 48c, the expanded second thermally expandable member 52x hardly comes into contact with the door end side prospective surface 14h. Therefore, the expanded thermally expandable members 50x, 52x do not push out the door body 14, and have a flame-blocking effect on both sides of the door body 14 in the direction in which they are viewed, thereby further improving fire prevention performance. Furthermore, since the door body 14 is not pushed out toward the door end, the engagement of the smoke return 12db and the smoke return 14dd (see Fig. 4) does not become shallow, and the flameproofing properties of the connection portion are reduced. Never.

Furthermore, approximately half of the outdoor side of the first thermally expandable member 50 faces the storage section 46f, and the storage section 46f functions like a guide. In other words, the expanded first thermally expandable member 50x is squeezed by the storage section 46f and bulges out from the gap between the storage section 46f and the outdoor side surface 14f, and the direction of the expansion is guided slightly toward the indoor side. It is possible to reliably contact the outdoor side surface 14f. Therefore, fire protection performance can be further improved.

FIG. 6 is a diagram showing the fitting 10 in a state where the thermally expandable members 50 and 52 are expanded, (a) is a schematic vertical cross-sectional view with the door body 14 warped toward the outdoor side, and (b) is a diagram showing the fitting 10 in a state where the thermally expandable members 50 and 52 are expanded. It is a schematic vertical sectional view of the door body 14 in a state where it is warped toward the indoor side, and (c) is a schematic front view of the state where the door end side vertical end portion 14c of the door body 14 is along the door end side.

As shown in FIG. 6(a), the door body 14 in a high temperature state may warp toward the outdoor side. At this time, a gap may occur between the expanded second thermally expandable member 52x and the indoor side surface 14g of the door body 14 on the indoor side. However, on the outdoor side, since the outdoor side surface 14f pushes in the expanded first thermally expandable member 50x, no gap is generated, and the fire prevention performance is maintained.

As shown in FIG. 6(b), the door body 14 that is in a high temperature state may warp toward the indoor side. At this time, a gap may occur between the expanded first thermally expandable member 50x and the outdoor side surface 14f of the door body 14 on the outdoor side. However, on the indoor side, since the indoor side surface 14g pushes in the expanded second thermally expandable member 52x, no gap is generated, and the fire prevention performance is maintained.

As shown in FIG. 6(c), in the door body 14 that is in a high temperature state, the vertical end portion 14c on the door end side may warp toward the door end side. At this time, even if a gap is created between the door end side vertical end portion 14c and the door end side vertical frame 12c, the expanded thermally expandable members 50x, 52x are sufficiently expanded in the direction toward the door end side. This makes it possible to cover this gap and maintain fireproof performance. In this way, by providing both the first thermally expandable member 50 and the second thermally expandable member 52, there is a flame blocking effect from the indoor side and the outdoor side of the door body 14, and the fire prevention performance can be further improved. .

Next, a fitting 10A according to a modified example will be explained. Regarding the fittings 10A, the same elements as those of the fittings 10 described above are given the same reference numerals and detailed explanation thereof will be omitted. FIG. 7 is a cross-sectional view of the door end side vertical frame 12c of the frame body 12 and the door end side vertical end portion 14c of the door body 14 in the fitting 10A.

As shown in FIG. 7, a first inclined plate 60 is provided between the first extension surface 14fx of the outdoor side surface 14f and the first groove side surface 48b on the vertical frame prospective surface 48a of the door end side vertical frame 12c. There is. The first inclined plate 60 is disposed over the entire length of the door edge side vertical frame 12c in the longitudinal direction. The first thermally expandable member 50 is attached to the first mounting surface 60a of the first inclined plate 60. The surface of the first thermally expandable member 50 opposite to the surface facing the first mounting surface 60a is oriented toward the gap 53, and further oriented obliquely toward the outdoor side surface 14f of the door body 14. That is, the normal line B1 of the first mounting surface 60a is oriented obliquely toward the outdoor side surface 14f.

A second inclined plate 62 is provided between the second extension surface 14gx of the indoor side surface 14g and the second groove side surface 48c on the vertical frame prospective surface 48a of the door end side vertical frame 12c. The second inclined plate 62 is disposed over the entire length of the door edge side vertical frame 12c in the longitudinal direction. The second thermally expandable member 52 is attached to the second attachment surface 62a of the second inclined plate 62. The surface of the second thermally expandable member 52 opposite to the surface facing the second mounting surface 62a is oriented toward the gap 54, and further oriented obliquely toward the indoor side surface 14g of the door body 14. In other words, the normal line B2 of the second mounting surface 60a is oriented obliquely toward the indoor side surface 14g.

The angle between each back surface of the inclined plates 60, 62 and the prospective vertical frame surface 48a is 45 degrees or less so that each normal line B1, B2 is oriented at an appropriate angle with respect to the surfaces 14f, 14g. Therefore, the mounting surfaces 60a and 62a are set at angles closer to the vertical frame prospecting surface 48a in the Z direction than to the vertical frame finding surfaces 48b and 48c in the X direction on the plane of FIG. The inclined plates 60 and 62 are, for example, metal plates such as aluminum. Although the inclined plates 60 and 62 are fixed to the door end side vertical frame 12c, they may be configured as a part of the door end side vertical frame 12c.

FIG. 8 is a cross-sectional view of the door end side vertical frame 12c of the frame 12 of the fitting 10A and the door end side vertical end portion 14c of the door body 14 in a state where the thermally expandable members 50, 52 are expanded. As shown in FIG. 8, since the normal line B1 of the first mounting surface 60a is directed obliquely to the outdoor side surface 14f of the door body 14, the expanded first thermally expandable member 50x is directed along the normal line B1. It expands and reliably abuts against the outdoor side surface 14f of the door body 14. Since the normal line B2 of the second mounting surface 62a is oriented obliquely to the indoor side surface 14g of the door body 14, the expanded second thermally expandable member 52x expands along the normal line B2, Reliably abuts against the indoor side surface 14g. Thereby, the expanded thermally expandable members 50x, 52x tend to come into close contact with the door body 14, and the fire prevention performance is further improved.

In addition, the above-mentioned thermally expandable members 14cg, 14ch, 50, 52 may be of a coating type. The paint-type thermally expandable member can be applied to a predetermined location from a nozzle or the like in a fluid state, and then hardened. The thermally expandable member is cured from a fluid state over time or by chemical treatment such as mixing a curing agent to accelerate the curing reaction.

This kind of paint-on type thermally expandable material is a fluid thermally expandable material that is applied to the fittings and hardened, so if there are protrusions such as screws or protrusions on the surface of the fittings, Even for parts that are configured in a corner shape. The thermally expandable member can be provided without creating a gap. Therefore, there is no risk of the thermally expandable member peeling off and falling off over time, and fire protection can be improved.

A fitting according to one aspect of the present invention includes a sliding door body and a door edge side vertical frame provided with a vertical groove portion that accommodates a door tip portion of the door body when the door body is closed. The vertical groove portion includes a vertical frame facing surface opposite to a door end side facing surface of the door body, and a first groove side surface formed on the outdoor side of the vertical frame facing surface and protruding in the sliding direction of the door body. and a second groove side surface formed on the indoor side of the longitudinal frame prospective surface and protruding in the sliding direction of the door body, the first extension surface of the outdoor side surface of the door body and the indoor side surface in the vertical groove portion. A first thermally expandable member is provided between the first extension surface and the first groove side surface except for between the first extension surface and the second extension surface of the vertical groove portion, and a first thermal expansion member is provided between the first extension surface and the first groove side surface, and A second thermally expandable member is provided between the second extended surface and the second groove side surface, and a second thermally expandable member is provided between the first thermally expandable member and the second extended surface. One surface is oriented toward a first gap formed between the first groove side surface and the outdoor side surface when the door body is closed, and one surface of the second thermally expandable member is oriented when the door body is closed. The second gap is formed between the second groove side surface and the indoor side surface when the groove is opened.
According to such fittings, the expanded thermally expandable member does not push out the door body. In addition, the door body has a flame-blocking effect on both sides in the direction of view, further improving fire prevention performance.

The fitting according to one aspect of the present invention includes a first tight material that protrudes toward the outdoor side surface of the door body closed from the first groove side surface and closes the first gap, and a first tight material that closes the second groove side surface. The door body is characterized by comprising a second tight material that protrudes toward the outdoor side surface of the door body and closes the second gap.
Since such a tight material covers the thermally expandable member, it is suitable for design and prevents the thermally expandable member from being accidentally touched.

In the fitting according to one aspect of the present invention, one surface of the first thermally expandable member is oriented obliquely toward the outdoor side surface of the door body, and one surface of the second thermally expandable member is directed toward the indoor side surface of the door body. It is characterized by being oriented diagonally.
Since the expandable member is oriented obliquely toward the surface of the door body, the expanded thermally expandable member also expands in this direction and reliably abuts against the surface of the door body. This makes it easier for the expanded thermally expandable member to come into close contact with the door body, further improving fire protection performance.

It goes without saying that the present invention is not limited to the embodiments described above, and can be freely modified without departing from the spirit of the present invention.

10, 10A fittings, 12 frame, 12a upper frame, 12b lower frame, 12c door end side vertical frame, 12d door end side vertical frame, 14 door body, 14a upper end, 14b lower end, 14c door end side vertical end , 14d Door bottom side vertical end, 14f Outdoor side, 14fx 1st extension surface, 14gx 2nd extension surface, 14g Indoor side surface, 14h Door end side prospective surface, 46f, 46g Storage section, 48 Vertical groove section, 48a Vertical frame prospective surface, 48b first groove side surface, 48c second groove side surface, 50 first thermally expandable member, 50a, 52a surface (one surface), 52 second thermally expandable member, 50x, 52x expanded thermally expandable member, 53 1 gap, 54 2nd gap, 56 1st tight material, 58 2nd tight material, 60 1st inclined plate, 60a 1st mounting surface, 62 2nd inclined plate, 62a 2nd mounting surface

Claims (3)

sliding door body,
a door end side vertical frame including a vertical groove portion that accommodates the door end portion of the door body when the door body is closed;
A fitting having
The vertical groove portion is
a vertical frame facing surface opposite to the door end side facing surface of the door body;
a first groove side surface formed on the outdoor side of the vertical frame prospective surface and protruding in the sliding direction of the door body;
a second groove side surface formed on the indoor side of the vertical frame prospective surface and protruding in the sliding direction of the door body;
Equipped with
A first extension surface is provided between the first extension surface and the first groove surface at a location other than between the first extension surface on the outdoor side surface of the door body and the second extension surface on the indoor side surface in the vertical groove part, and between the first extension surface and the first groove side surface. 1 a thermally expandable member is provided;
A second thermally expandable member is provided at a location in the longitudinal groove excluding between the first extension surface and the second extension surface and between the second extension surface and the second groove side surface. ,
one surface of the first thermally expandable member is oriented toward a first gap formed between the first groove side surface and the outdoor side surface when the door body is closed;
A fitting characterized in that one surface of the second thermally expandable member faces a second gap formed between the second groove side surface and the indoor side surface when the door body is closed. a first tight material that protrudes from the first groove side surface toward the outdoor side surface of the closed door body and closes the first gap;
a second tight material that protrudes from the second groove side surface toward the indoor side surface of the closed door body and closes the second gap;
The fitting according to claim 1, comprising: one surface of the first thermally expandable member is oriented obliquely toward the outdoor side surface of the door body;
The fitting according to claim 1 or 2, wherein one surface of the second thermally expandable member is oriented obliquely toward the indoor side surface of the door body.

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