JP7219684B2 - Fittings - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fittings in which building materials for ventilation are provided adjacent to face materials.

Fittings are provided in which a ventilation frame is provided inside the shoji. The ventilation frame, for example, includes a ventilation hole provided to penetrate the room and the outside, and a shutter member movably disposed so as to open and close the ventilation hole. It is disposed between the glass that is the face material and the upper frame. In this type of fittings, if the shutter member is operated to open the ventilation hole, it is possible to ventilate through the ventilation frame even when the shoji is closed, which is advantageous in terms of operability and crime prevention. (See Patent Document 1, for example).

JP-A-9-268853

By the way, in this kind of fittings, the cross-sectional area of the ventilation frame is generally configured to be larger than the cross-sectional area of the upper frame in consideration of ventilation efficiency. For this reason, when the fittings are exposed to high temperatures in the event of a fire, etc., due to the size of the cross-sectional area, the amount of heat expansion of the ventilation frame becomes larger than that of the upper frame. A gap may occur in the connection part with. If there is a gap between the connecting portion between the upper frame and the vertical frame, there is a risk that the gap will become a through hole for flames along the indoor and outdoor directions, which is not necessarily desirable from the standpoint of fire prevention. Incidentally, the above-mentioned problem is not limited to the shoji, but can similarly occur in a FIX window provided with a ventilation frame as a building material for ventilation, for example.

SUMMARY OF THE INVENTION It is an object of the present invention to provide fittings that are provided with ventilation building materials and that can maintain fire resistance.

In order to achieve the above object, in the fitting according to the present invention, a vertical frame is connected to both ends of an upper frame and to both ends of a lower frame, respectively , and a vertical frame is provided between the vertical frames so as to be adjacent to the upper frame. A fitting in which a ventilation frame is arranged, and a face material is arranged in an area surrounded by the ventilation frame and the vertical frame , and between the upper frame and the vertical frame and between the lower frame and the vertical frame The ventilation frame is formed of the same material as the upper frame and has a larger cross - sectional area than the upper frame . A spacer member is interposed between the vertical rails without screws by engaging the vertical rails, and is melted or destroyed by heat between at least one of the cap members and the vertical rails. The ventilation frame is connected to a reinforcing member formed of a material having a coefficient of thermal expansion smaller than that of the ventilation frame .
In addition, in the fitting according to the present invention, vertical frames are connected to both ends of the upper frame and both ends of the lower frame, respectively, and a ventilation frame is arranged between the vertical frames so as to be adjacent to the upper frame. and a face member is disposed in an area surrounded by the ventilation frame, the lower frame, and the vertical frame, wherein the ventilation frame is formed of the same material as the upper frame, and the upper frame An upper wall portion is provided on the upper side of the ventilation frame, and a reinforcing member formed of a material having a coefficient of thermal expansion smaller than that of the ventilation frame is attached to the upper wall. It is characterized by being connected only to the part.

According to the present invention, the thermal expansion of the ventilation building material can be suppressed by the connected reinforcing material, and the occurrence of a gap between the first building material and the second building material can be prevented more reliably, so fire resistance is improved. can be prevented from being damaged.

It is the figure which looked at the fitting which is embodiment of this invention from the indoor side. FIG. 2 is a longitudinal sectional view of the fitting shown in FIG. 1; It is a cross-sectional view of the fittings shown in FIG. 1. It is a thing which shows the shoji of the indoor side in the fittings shown in FIG. 1, (a) is a top view, (b) is an exploded top view. FIG. 2 shows a sliding door on the indoor side in the fittings shown in FIG. 1, (a) being a vertical cross-sectional view of the main part, and (b) being an exploded vertical cross-sectional view of the main part. FIG. 2 shows a sliding door on the indoor side in the fitting shown in FIG. 1, where (a) is a cross-sectional view and (b) is an exploded cross-sectional view.

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of fittings according to the present invention will be described in detail below with reference to the accompanying drawings.
1 to 4 show fittings that are embodiments of the present invention. The fittings exemplified here are called double sliding windows in which an outdoor shoji 20 and an indoor inner shoji 30 are arranged to be slidable in the left-right direction with respect to the frame 10 . The frame body 10 is constructed by framing the left and right vertical frames 11, the upper frame 12 and the lower frame 13 on all four sides.

The outer shoji 20 is formed by connecting left and right vertical frames 21 and 22, an upper frame 23 and a lower frame 24 in a rectangular shape, and mounting a rectangular panel 25 between these frames. On the other hand, the inner shoji 30 connects the left and right vertical frames (second building materials) 31 and 32, the upper frame (first building material) 33 and the lower frame 34 in a rectangular shape, and along the lower edge of the upper frame 33 A ventilation stile (building material for ventilation) 36 is arranged at the bottom, and a rectangular face member 35 is mounted between the left and right vertical stiles 31 and 32, the lower stile 34 and the ventilation stile 36. The outer dimensions of the inner shoji 30 are substantially the same as the outer dimensions of the outer shoji 20 . That is, the face material 35 of the inner shoji 30 has a rectangular shape smaller in vertical dimension than the face material 25 of the outer shoji 20 by the ventilation frame 36 . In the present embodiment, double glazing is applied as the face material 25 of the outer shoji 20 and the face material 35 of the inner shoji 30, respectively. However, as the face materials 25, 35 of the shojis 20, 30, it is not always necessary to apply multi-layered glass.

The vertical frames 31 and 32, the upper frame 33 and the lower frame 34, which constitute the inner shoji 30, including the ventilation frame 36, are extruded members formed of metal such as aluminum alloy, and extend along the entire length. The parts are formed to have substantially the same cross-sectional shape.

In the present embodiment, the vertical frame (vertical frame 31 located on the right side in FIG. 1) that is the door frame of the inner shoji 30 (vertical frame 31 located on the right side in FIG. 1, hereinafter referred to as the door frame 31 when distinguished from the vertical frame 32 located on the left side) ), the upper frame 33 and the lower frame 34 have a pair of face member support plate portions 31b, 33b, and 34b on the inner peripheral sides of hollow frame base portions 31a, 33a, and 34a, respectively. A pair of frame engaging plate portions 31c, 33c, and 34c are applied to the outer peripheral side of 34a. The door frame 31, the upper frame 33, and the lower frame 34 are configured so that the dimensions of the frame base portions 31a, 33a, and 34a along the projection direction are substantially the same. Similarly, the dimensions of the pair of face material support plate portions 31b, 33b, and 34b along the direction of projection and the dimensions of the pair of frame engaging plate portions 31c, 33c, and 34c along the direction of projection are the same. The frame 33 and the bottom frame 34 are constructed to be substantially the same. A pair of frame engaging plate portions 31c, 33c, and 34c provided on the door frame 31, the upper frame 33, and the lower frame 34 has a dimension along the direction of projection and a dimension along the direction of projection of the frame bases 31a, 33a, and 34a. are almost the same. A pair of face material support plate portions 31b, 33b, and 34b provided on the door frame 31, the upper frame 33, and the lower frame 34 are configured so that the dimension along the projected direction is larger than the plate thickness of the face material 35. There is.

Here, the projected direction is a direction along the depth of the fittings, as indicated by an arrow A in the drawing. A surface along the prospective direction may be referred to as a prospective surface. Also, the term "finding direction" is used in this embodiment. In the case of components such as the upper rail 33 and the lower rail 34 that extend in the horizontal direction, the viewing direction is a vertical direction perpendicular to the viewing direction. In the case of vertical frames 31, 32, etc., which extend along the vertical direction, the viewing direction is the horizontal direction perpendicular to the viewing direction. A plane along the viewing direction may be referred to as a viewing plane.

As a vertical frame (the vertical frame 32 located on the left side in FIG. 1, hereinafter referred to as a combination frame 32 when distinguished from the door frame 31) serving as the meeting frame of the inner shoji 30, a hollow frame is used. A pair of face material support plate portions 32b are provided on the inner peripheral side of the base portion 32a, and a cover portion 32d is provided on a portion of the interior from the frame base portion 32a to the face material support plate portion 32b. . The meeting frame 32 of the inner shoji 30 is not provided with structures corresponding to the above-described frame engaging plate portions 31c, 33c, and 34c. The dimension of the frame base portion 32a along the direction of projection and the dimension of the pair of face material support plate portions 32b along the direction of projection are all substantially the same as those of the door frame 31, the upper frame 33 and the lower frame 34. is configured in The cover portion 32d is provided so as to protrude from the frame base portion 32a and the face material support plate portion 32b toward the interior side, and forms a hollow chamber between the frame base portion 32a and the face material support plate portion 32b. ing.

As shown in FIGS. 4(a) and 4(b), the vertical frames 31 and 32, the upper frame 33 and the lower frame 34 are arranged between the left and right vertical frames 31 and 32, respectively. 34 are arranged perpendicular to each other, and screws S are screwed into the screw holes 33d of the upper frame 33 and the screw holes 34d of the lower frame 34 through the vertical frames 31 and 32. will constitute The left and right vertical frames 31 and 32 have substantially the same longitudinal dimension. The lengthwise dimensions of the upper rail 33 and the lower rail 34 are also substantially the same.

In this embodiment, the door frame 21, the upper frame 23, the lower frame 24, and the meeting frame 22 are the door frame 31, the upper frame 33, the lower frame 34, and the door frame 34 of the inner shoji 30, respectively. A configuration that is substantially the same as that of the interlocking frame 32 is applied. However, the configuration of the outer shoji 20 does not necessarily have to be the same configuration as in the embodiment. Moreover, although the meeting frame 22 of the outside shoji 20 is not provided with the structure corresponding to the cover part 32d, you may make it provide a cover part in the part used as the outdoor side. Furthermore, the reference numerals in the figure are smoke returners 22e, 32e provided on the meeting frame 22 of the outer shoji 20 and the meeting frame 32 of the inner shoji 30. As shown in FIG. When the inner shoji 30 and the outer shoji 20 are placed in a closed position with respect to the frame 10, the smoke returners 22e, 32e engage with each other in a state of being arranged side by side in the prospective direction. The return 32e is arranged between the meeting frame 22 of the outside shoji 20 and the smoke return 22e of the outside shoji 20, and the smoke return 22e of the outside shoji 20 is between the meeting frame 32 of the inside shoji 30 and the smoke return 32e. placed.

On the other hand, the ventilation frame 36 of the inner shoji 30, as shown in FIG. It has an inner wall portion 36a. The inner wall portion 36a is a portion that extends vertically along the viewing direction inside the room. The inner wall portion 36a is integrally provided with an upper wall portion 36b at its upper edge and is integrally provided with a lower wall portion 36c at its lower edge. As is clear from the drawing, the ventilation frame 36 has a cross-sectional area larger than that of the upper frame 33 . For this reason, the lengthwise dimension of the ventilation frame 36 is set shorter than the mutual interval between the vertical frames 31 and 32 when the upper frame 33 and the lower frame 34 are connected between the left and right vertical frames 31 and 32. be. Specifically, the ventilation frame 36, which has a larger cross-sectional area than the upper frame 33, has a larger amount of thermal expansion than the upper frame 33 when the temperature is high. For this reason, in this fitting, as shown in FIG. 6, a cap member 40, which will be described later, is attached to both ends of the vertical frame 31, 32 with respect to the mutual spacing W between the vertical frames 31 and 32 when both the ventilation frame 36 and the upper frame 33 are in a high temperature state. The dimension along the length of the ventilation frame 36 is set short in advance so that the total length L along the length of the ventilation frame 36 attached to is not increased. The mutual interval W between the vertical frames 31 and 32 is the distance between the end face of the face material support plate portion 31 b of the door frame 31 and the end face of the face material support plate portion 32 b of the meeting frame 32 .

As shown in FIG. 5, the upper wall portion 36b of the ventilation frame 36 extends substantially horizontally from the inner wall portion 36a toward the outside of the room. It has a pair of engagement walls 36e. The upper screw hole 36d has a cylindrical shape extending along its length, and a part of the peripheral wall thereof opens to the lower surface of the upper wall portion 36b. The engagement wall portion 36e has a flat plate shape extending upward from the upper surface of the upper wall portion 36b so as to be parallel to each other. The dimensions of the pair of engaging wall portions 36e along the projection direction are configured so that they can be fitted between the pair of face material supporting plate portions 33b of the upper frame 33. As shown in FIG. As is clear from the drawing, the engaging ridges 36f are provided along the longitudinal direction on the outer surfaces of the respective engaging wall portions 36e. These engagement ridges 36f are provided on the inner surfaces of the face material support plate portion 33b facing each other when the pair of engagement wall portions 36e are fitted between the face material support plate portions 33b. It engages with the matching groove 33f.

The lower wall portion 36c extends from the inner wall portion 36a so as to gradually slope downward toward the outside of the room. It has a portion 36h. The lower screw hole 36g has the same structure as the upper screw hole 36d, and a part of the peripheral wall opens to the lower surface of the lower wall portion 36c. The face material supporting fin portion 36h has a flat plate shape extending downward so as to be parallel to each other from the edge portion located on the interior side of the lower wall portion 36c and the edge portion located on the exterior side of the room. are configured to be substantially identical to each other. The mutual spacing between the facing inner surfaces of the pair of face material supporting fins 36h substantially coincides with the mutual spacing between the mutually facing inner surfaces of the pair of facing face material supporting plate portions 33b of the upper frame 33. As shown in FIG.

The inner wall portion 36a of the ventilation frame 36 is provided with a plurality of inner openings 36j for ventilation at regular intervals along the length thereof. The ventilation inner opening 36j is for ventilating the interior and exterior of the room partitioned by the shoji screens 20 and 30 along the prospective direction. In addition, a filter 50 is detachably arranged on the facing surface of the inner wall portion 36a which is the indoor side, and a shutter member 51 is arranged on the facing surface which is the outdoor side. The filter 50 filters the air passing through the ventilation inner opening 36j, and can prevent, for example, foreign matter from entering the room through the ventilation inner opening 36j. However, providing the filter 50 on the inner wall portion 36a is not essential. The shutter member 51 opens and closes the inner ventilation opening 36j by moving relative to the inner wall portion 36a. In the present embodiment, the shutter member 51 is rotatably supported by the ventilation frame 36 at a portion on the exterior side of the inner wall portion 36a with the upper edge portion as the rotation axis. That is, as shown by the solid line in FIG. 5A, when the shutter member 51 is arranged along the vertical direction, the shutter member 51 closes the ventilation inner opening 36j, and the inner wall portion 36a is closed. Ventilation becomes impossible. On the other hand, as indicated by the two-dot chain line in FIG. 5(a), when the shutter member 51 rotates around the rotation axis so that the lower edge of the shutter member 51 is positioned on the outside of the room, the ventilation inner opening 36j opens. , allowing ventilation in the prospective direction through the inner wall portion 36a. Although not shown in the drawing, the inner wall portion 36a is provided with an operating portion for operating the shutter member 51 so as to be exposed to the inside of the room. The moving form of the shutter member 51 does not necessarily have to be rotational, and for example, it can be configured such that the inner ventilation opening 36j is opened and closed when it is slid along the longitudinal direction. An outer cover member 37, a reinforcing member 38 and two cap members 40 are attached to the ventilation frame 36 having the above structure.

The outer cover member 37 is mounted between the extending edge of the upper wall portion 36b and the extending edge of the lower wall portion 36c so as to be substantially parallel to the inner wall portion 36a. A ventilation space (hollow portion) 1 is formed between the portion 36a, the upper wall portion 36b, and the lower wall portion 36c. The outer cover member 37 is provided with an outer ventilation opening 37a that is always open. Therefore, when the inner opening 36j for ventilation of the inner wall portion 36a is opened by operating the shutter member 51, ventilation between the outdoor and the indoor can be performed through the ventilation space 1 and the outer opening 37a for ventilation.

In this ventilation space 1, the shutter member 51 and its operating mechanism are accommodated, and a thermal expansion member 60 is arranged. The thermally expandable member 60 is a noncombustible or flame-retardant fireproof member that expands with heat. As the thermally expandable member 60 of this type, for example, a thermally expandable graphite-containing foamed material can be applied. In the present embodiment, an elongated thermally expandable member 60 having a thin cross-sectional shape with respect to the dimension in the width direction is provided over the entire length of the upper surface of the lower wall portion 36c. Although not shown in the figure, each thermally expansive member 60 is adhered with a double-sided tape or an adhesive, so that it will not come off from the lower wall portion 36c inadvertently.

The reinforcing member 38 is formed by integrally forming a mounting plate portion 38a having a flat plate shape and two side plate portions 38b bent in the same direction from both side edges of the mounting plate portion 38a. It is a scale member. The reinforcing member 38 is connected to the upper surface of the upper wall portion 36b of the ventilation frame 36 by screwing a plurality of screws 39 into the upper wall portion 36b of the ventilation frame 36 via the mounting plate portion 38a. As the reinforcing material 38, a material molded from a material having a smaller coefficient of thermal expansion than the metal forming the ventilation frame 36 is used. For example, if the ventilation frame 36 is made of an aluminum alloy, the reinforcing material 38 may be made of steel. The longitudinal dimension of the reinforcing member 38 does not necessarily have to be the same as that of the ventilation frame 36, and a shorter length than the ventilation frame 36 may be connected. The screws 39 for connecting the reinforcing member 38 to the ventilation frame 36 may be provided at least at both ends of the reinforcing member 38, but it is more preferable to provide a large number of screws.

The cap member 40 is made of a metal such as an aluminum alloy, and as shown in FIG. In the ventilation frame 36 to which the cap member 40 is attached, when the shutter member 51 closes the ventilation inner opening 36j, ventilation leakage from both ends is prevented. In this embodiment, the left and right cap members 40 are symmetrical with each other. As shown in FIGS. 5 and 6, the cap member 40 includes a base plate portion 40a having substantially the same outer shape as the end face of the ventilation frame 36, and a pair of frame engaging fin portions 40b provided on the outer surface of the base plate portion 40a. is integrally formed, and is fixed to the ventilation frame 36 with the inner surface of the base plate portion 40a in contact with the end face of the ventilation frame 36. As shown in FIG. To attach the cap member 40 to the ventilation frame 36, screws 41 are screwed into the upper screw holes 36d of the upper wall portion 36b and the lower screw holes 36g of the lower wall portion 36c through the cap member 40, respectively. The frame engaging fin portion 40b has a plate shape extending substantially parallel to each other from the indoor-side edge portion and the outdoor-side edge portion of the base plate portion 40a. The dimensions of the pair of rail engaging fins 40b along the direction of projection are configured so that they can be fitted between the face material supporting plate portions 31b and 32b of the vertical rails 31 and 32. As shown in FIG.

The cap member 40 is provided with a thermally expandable member 61 at a portion between the pair of frame engaging fins 40b on the outer surface of the substrate portion 40a. Spacer members 62 are provided on both side edges outside 40b. The thermally expandable member 61 is the same as that provided in the ventilation space 1 . The spacer member 62 is molded from a resin that melts or burns off with heat, such as ABS resin (acrylonitrile, butadiene, styrene copolymer synthetic resin), and is arranged along the entire length along the top and bottom of the substrate portion 40a. . The plate thickness of the spacer member 62 (thickness dimension along the length of the ventilation frame 36) is the same as that of the vertical frames 31 and 32 connecting the ventilation frame 36 with the cap members 40 attached to both ends to both ends of the upper frame 33. It is equal to 1/2 of the gap between the base plate portion 40a of the cap member 40 and the face material supporting plate portions 31b and 32b of the vertical bars 31 and 32 when they are arranged between each other. In other words, when the ventilation frame 36 to which the cap member 40 is attached is arranged between the vertical frames 31 and 32, the substrate portion 40a of the cap member 40 and the face members of the vertical frames 31 and 32 are separated from each other via the spacer member 62. The plate thickness of the spacer member 62 is set so that the support plate portions 31b and 32b are in contact with each other without a gap. Although not shown in the drawing, the thermal expansion member 61 and the spacer member 62 are adhered with double-sided tape or adhesive.

The ventilation frame 36 described above has the engaging wall portion 36e provided on the upper wall portion 36b mounted between the face material support plate portions 33b of the upper frame 33, and the frame engaging fin portion 40b of the cap member 40 between the vertical frame. By mounting it between the face material support plate portions 31b and 32b of 31 and 32, it is disposed between the vertical rails 31 and 32 along the lower edge of the upper rail 33. As shown in FIG. In this state, the thermal expansion member 61 provided in the cap member 40 is arranged in the space defined by the vertical frames 31 and 32 and the cap member 40 . In addition, the spacer member 62 of the cap member 40 is interposed between the substrate portion 40a and the end surfaces of the face member support plate portions 31b and 32b of the vertical rails 31 and 32, filling the gaps between the two. There is no gap between the cap members 40 attached to both ends of the ventilation frame 36 and the vertical frames 31 and 32.例文帳に追加The face material 35 arranged between the vertical frames 31, 32 and the lower frame 34 has its upper edge arranged between the face material supporting fins 36h provided on the lower wall 36c of the ventilation frame 36. Movement in the outward direction is restricted.

According to the fittings configured as described above, even when the outer shoji 20 and the inner shoji 30 are closed, if the shutter member 51 is operated from the inside of the room to open the ventilation inner opening 36j of the ventilation frame 36, Ventilation can be performed between the interior and the exterior of the room. On the other hand, if the shutter member 51 is operated to close the ventilation inner opening 36j of the ventilation frame 36, the ventilation through the ventilation frame 36 is blocked, and for example, the regulated indoor air may inadvertently leak out of the room. does not occur.

Here, if the fittings are exposed to high temperatures in the event of a fire or the like, there is a concern that the ventilation frame 36 having the ventilation inner opening 36j and the ventilation outer opening 37a may serve as a flame penetration port. However, according to the fittings described above, when the fittings become hot, the thermally expandable member 60 disposed on the lower wall portion 36c of the ventilation frame 36 expands to fill the ventilation space 1 and through the ventilation frame 36 This eliminates the risk of flame penetrating in the indoor and outdoor directions. Further, the expansion of the thermally expansive member 61 provided on the cap member 40 also closes the gap between the vertical frames 31 and 32 and the cap member 40 . Although no screws are provided between the vertical frames 31, 32 and the ventilation frame 36, this prevents the ventilation frame 36 from being displaced with respect to the vertical frames 31, 32. This prevents the member 40 from coming off.

On the other hand, as described above, the reinforcing member 38 having a smaller coefficient of thermal expansion than the ventilation frame 36 is connected to the upper wall portion 36 b of the ventilation frame 36 . Therefore, the amount of thermal expansion of the ventilation frame 36 is suppressed by the reinforcing material 38, and the amount of thermal expansion becomes smaller than when the ventilation frame 36 is alone. In addition, between the ventilation frame 36 and the vertical frames 31 and 32, the spacer member 62 melts or burns out when the fittings become hot, so the ventilation frame 36 has a margin of elongation corresponding to the plate thickness of the spacer member 62. will be The end of the ventilation frame 36 does not have a portion facing the vertical frames 31 and 32 other than the portion where the spacer member 62 is provided. Therefore, even if the amount of thermal expansion of the ventilation frame 36 with a large cross-sectional area becomes larger than that of the upper frame 33, the difference in the amount of thermal expansion between the ventilation frame 36 and the upper frame 33 will cause the spacer member 62 to melt or burn out. It will be absorbed by the elongation caused by As a result, the phenomenon that the ventilation frame 36 widens the mutual interval W between the vertical frames 31 and 32 does not occur when the fittings are in a high temperature state. As a result, there is no risk of gaps being formed between the ends of the upper rail 33 and the vertical rails 31 and 32, thereby preventing a situation in which the fire resistance is impaired. In addition, since there is no risk of reduction in the hooking allowance between the smoke return 22e provided on the meeting frame 22 of the outside shoji 20 and the smoke return 32e provided on the meeting frame 32 of the inside shoji 30, the outside shoji 20 and the inside shoji 30 are eliminated. There is no possibility that the fireproof property will be impaired due to the presence of a gap between them.

In addition, in the above-described embodiment, a double sliding window is exemplified, but if the ventilation frame 36 is provided, the double sliding window is not necessarily required. Moreover, although the shoji 30 provided with the ventilation frame 36 is exemplified, it can be applied as a ventilation frame to fittings in which the face material is directly supported on the frame, such as a FIX window. Furthermore, although the building material for ventilation is arranged above the face material 35, it may be arranged below or to the side of the face material 35. FIG.

In the above-described embodiment, since the spacer member 62 is interposed between the ventilation frame 36 and the vertical frames 31, 32, the connecting portion between the end of the upper frame 33 and the vertical frames 31, 32 However, it is not always necessary to provide the spacer member 62 . In the above-described embodiment, when the spacer member 62 is provided between the ventilation frame 36 and the vertical frames 31 and 32, the spacer member 62 is provided on the metal cap member 40, but the present invention The cap member 40 and the spacer member 62 are not limited to this, and the same effect can be achieved by forming the cap member 40 and the spacer member 62 integrally from a material that melts or burns off due to heat. In addition, in the case where the separate spacer member 62 is provided on the cap member 40, in the above-described embodiment, each cap member 40 is provided with two spacer members 62. Only the spacer member 62 may be provided. When the spacer member 62 is provided only on one cap member 40, it is preferable to apply a spacer member having a plate thickness approximately twice as large as that of the spacer member 62 shown in the embodiment.

Furthermore, in the above-described embodiment, the reinforcement member 38 connected to the ventilation frame 36 has a substantially U-shaped cross section, which suppresses thermal expansion of the ventilation frame 36 when the temperature is high. In addition, it is possible to prevent thermal deformation such as thermal warping of the ventilation frame 36, which is more advantageous in terms of fire prevention. However, the shape of the reinforcing member 38 is not limited to that shown in the embodiment.

Furthermore, in the above-described embodiment, the thermal expansion member 60 is arranged in the ventilation space 1, and the thermal expansion member 61 is arranged on the outer surface of the cap member 40 facing the vertical frames 31 and 32. Therefore, it is more advantageous in terms of fire prevention as described above, but these thermally expandable members 60 and 61 do not necessarily have to be provided.

As described above, in the fittings according to the present invention, the second building materials are connected to both ends of the first building materials, and the ventilation building materials are arranged between the second building materials so as to be adjacent to the first building materials. and a face material disposed in an area surrounded by the building material for ventilation and the second building material, wherein the building material for ventilation is formed of the same material as the first building material, and the first The ventilation building material has a cross-sectional area larger than that of one building material, and is characterized in that the ventilation building material is connected to a reinforcing material formed of a material having a smaller coefficient of thermal expansion than the ventilation building material.
According to the present invention, the connected reinforcing member suppresses the thermal expansion of the ventilation building material, thereby more reliably preventing the occurrence of a gap between the first building material and the second building material. can be prevented from being damaged.

Further, according to the present invention, in the fittings described above, a spacer member that melts or burns off due to heat is interposed between at least one end of the ventilation building material and the second building material.
According to the present invention, the difference in thermal elongation between the first building material and the ventilation building material is absorbed by the melting or burning of the spacer member. It is possible to prevent a situation in which a gap is generated between them, and to improve fire resistance.

Further, according to the present invention, in the above fittings, a thermally expandable member is interposed between the end of the building material for ventilation and the second building material.
According to this invention, since the space between the end portion of the building material for ventilation and the second building material is blocked by the thermally expansive member, the building material for ventilation is prevented from being displaced from the second building material. As a result, even when the building material for ventilation is not connected to the first building material and the second building material by connecting members such as screws, gaps are generated between the first building material and the second building material and the building material for ventilation. situation can be prevented.

1 ventilation space 31, 32 vertical frame 33 upper frame 35 face member 36 ventilation frame 38 reinforcing member 60, 61 thermally expandable member 62 spacer member

Claims (3)

A vertical frame is connected to both ends of the upper frame and to both ends of the lower frame, and a ventilation frame is disposed between the vertical frames so as to be adjacent to the upper frame . A fitting in which a face material is arranged in an area surrounded by a frame ,
The upper frame and the vertical frame and the lower frame and the vertical frame are connected by screws, respectively;
The ventilation frame is made of the same material as the upper frame and has a cross-sectional area larger than that of the upper frame . A spacer member is interposed between the vertical rails without a spacer member, and is melted or destroyed by heat between at least one of the cap members and the vertical rails,
A fitting characterized in that the ventilation frame is connected to a reinforcing member formed of a material having a coefficient of thermal expansion smaller than that of the ventilation frame . A vertical frame is connected to both ends of the upper frame and both ends of the lower frame, respectively, and a ventilation frame is disposed between the vertical frames so as to be adjacent to the upper frame,
Furthermore, a fitting having a face material disposed in an area surrounded by the ventilation frame, the lower frame and the vertical frame,
The ventilation frame is made of the same material as the upper frame and has a larger cross-sectional area than the upper frame,
An upper wall portion is provided on the upper side of the ventilation frame, and a reinforcing member formed of a material having a coefficient of thermal expansion smaller than that of the ventilation frame is connected only to the upper wall portion. Fittings. 3. The fitting according to claim 1, wherein a thermal expansion member is interposed between the end of said ventilation frame and said vertical frame .

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