Fitting

Abstract

To suppress the occurrence of a gap between a frame body and a door body in case of fire by the door body having a simple structure.SOLUTION: The fitting 1 includes a door body 2 that opens in an opening direction K, which is one of an outdoor direction and an indoor direction, and closes in a closing direction H, and a frame body 3 to which the door body 2 is connected in an openable and closable manner. The door body 2 has an aggregate 4, a first surface material 30 positioned on the opening direction K side with respect to the aggregate 4 and restrained by the aggregate 4 in case of fire, and a second surface material 40 positioned on the closing direction H side with respect to the aggregate 4 and connected to the aggregate 4 separably by heat of fire.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a door fitting in which a frame is placed between two surface materials of a door body. [Background technology]

[0002] In a door body of a building fixture, a frame is provided inside the door body, and two surface materials are attached to the frame. The two surface materials of the door body face each other in the indoor / outdoor direction, with the frame sandwiched between them, and are located on the outdoor surface and the indoor surface of the door body. The door body is placed inside the frame of the building fixture and is connected to the frame so that it can be opened and closed. Also, as such a door body, a fire door in which two surface materials, a front door panel member and a rear door panel member, are reinforced by a reinforcing plate member, which is a frame, has been known (see Patent Document 1).

[0003] In the conventional fire door described in Patent Document 1, fixing brackets are fitted into recesses in a reinforcing plate, and the rear panel portions of the front and rear door panels are fitted into the fixing brackets within the recesses of the reinforcing plate. This joins and secures the front and rear door panels to the reinforcing plate, increasing the impact strength of the fire door. However, in conventional fire doors, the reinforcing plate and fixing brackets must each be bent into complex shapes, making the fire door structure complex. Furthermore, in the event of a fire on the interior side of the fire door, the fire door, including the front and rear door panels and reinforcing plate, deforms as a single unit. This raises concerns that the entire fire door may warp, creating a gap between the frame and the fire door. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Act No. 2593908 Publication Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made in consideration of the above-mentioned problems of the conventional art, and its purpose is to prevent gaps from occurring between the frame and the door body in the event of a fire using a door body with a simple structure. [Means for solving the problem]

[0006] The present invention provides A door that opens in one of an outdoor direction and an indoor direction and closes in a closing direction, and a frame to which the door is connected so as to be openable and closable. The door body is a fixture having a frame, a first surface material located on the opening side of the frame and restrained by the frame in the event of a fire, and a second surface material located on the closing side of the frame and connected to the frame so as to be detachable by the heat of a fire. [Effects of the Invention]

[0007] According to the present invention, a door body with a simple structure can prevent gaps from occurring between the frame body and the door body in the event of a fire. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a front view showing the fitting of the present embodiment. [Figure 2] FIG. 2 is a vertical cross-sectional view showing the fitting of the present embodiment. [Figure 3] FIG. 2 is a cross-sectional view showing the fitting of the present embodiment. [Figure 4] This is a cross-sectional view showing a portion including a vertical frame of the building fixture of this embodiment. [Figure 5] FIG. 2 is a vertical cross-sectional view showing the normal state of the fitting of this embodiment. [Figure 6] FIG. 1 is a cross-sectional view showing the state of the fixture of this embodiment in the event of a fire. [Figure 7] FIG. 2 is a vertical cross-sectional view showing the state of the fitting of this embodiment in the event of a fire. [Figure 8] FIG. 10 is a cross-sectional view showing another example of the fitting of the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] An embodiment of the fitting of the present invention will be described with reference to the drawings. The fixture of this embodiment is an openable and closable door, and is installed in an opening of a building. The fixture is installed between the interior (indoor) and exterior (outdoor) of the building, and closes the opening of the building with a door body. Below, the fixture of this embodiment will be described using the example of the fixture being an entrance door installed at the entrance.

[0010] Fig. 1 is a front view showing the fitting 1 of this embodiment, showing the general configuration of the fitting 1 installed in a building as seen from inside the room. Fig. 2 is a longitudinal cross-sectional view showing the fitting 1 of this embodiment, showing the fitting 1 cut along line X1-X1 in Fig. 1. Fig. 3 is a transverse cross-sectional view showing the fitting 1 of this embodiment, showing the fitting 1 cut along line X2-X2 in Fig. 1.

[0011] When viewing the fitting 1 installed in a building from the front, the direction that is up and down is the up-down direction R, and the direction that is left and right is the left-right direction S. In Figure 1, the up-down direction R is the vertical direction, and the left-right direction S is the horizontal direction. The indoor-outdoor direction T is the indoor-outdoor direction (indoor-outdoor direction) of the fitting 1 installed in a building. Furthermore, the indoor-outdoor direction T is the front-to-back direction (depth direction) and the thickness direction of the fitting 1 when viewed from the front of the fitting 1 installed in a building, and in Figure 3 is the horizontal direction perpendicular to the left-to-right direction S. In this way, the directions related to the fitting 1 are specified by the directions when it is installed in a building. Furthermore, the indoor side and outdoor side of the fitting 1 are the indoor side and outdoor side when it is installed in a building.

[0012] As shown in the figure, the fitting 1 is a single-leaf door, and comprises a door element 2 that opens and closes by pivoting, and a frame body 3 that surrounds the door element 2. The door element 2 is an openable and closable panel body, and is connected to the frame body 3 by a plurality of hinges 10 (see FIG. 3 ) so that it can be opened and closed. The door element 2 is disposed inside the frame body 3 (opening 3A) and pivots around the hinges 10 in an opening direction K and a closing direction H to open and close. The opening direction K is the pivot direction of the door element 2 when it opens, and is one of the directions toward the outside or the inside of the room. The closing direction H is the pivot direction of the door element 2 when it closes, and is the other of the directions toward the outside or the inside of the room. The door element 2 pivots in the opening direction K to open, and pivots in the closing direction H, which is the opposite direction to the opening direction K, to close.

[0013] The outdoor direction is the direction toward the outside of the room with respect to the door body 2 in a closed state, and the indoor direction is the direction toward the inside of the room with respect to the door body 2 in a closed state. When the opening direction K of the door body 2 is toward the outdoors, the door body 2 opens in the opening direction K toward the outside of the room and closes in the closing direction H toward the inside of the room. When the opening direction K of the door body 2 is toward the inside of the room, the door body 2 opens in the opening direction K toward the inside of the room and closes in the closing direction H toward the outside of the room. The door body 2 opens in the opening direction K and is positioned at the open position, and closes in the closing direction H and is positioned at the closed position. The closed position of the door body 2 is the position where the door body 2 is positioned when the door body 2 is closed (fully closed position), and the open position of the door body 2 is the position where the door body 2 is positioned when the door body 2 is opened (fully open position).

[0014] The door body 2 opens in an opening direction K, either toward the outside or toward the inside of the room, and closes in a closing direction H, which is the opposite direction to the opening direction K. Here, the door body 2 opens toward the outside of the room. Therefore, the opening direction K side of the door body 2 is the outside of the room, and the closing direction H side of the door body 2 is the inside of the room. The opening direction K of the door body 2 is the outside of the room, and the door body 2 rotates in the opening direction K toward the outside of the room to open. When opening and closing, the door body 2 rotates (moves) from a closed position inside the frame body 3 in the opening direction K to an open position, and is positioned at the open position. The door body 2 rotates from the open position in the closing direction H to a closed position, and is positioned at the closed position. The door body 2 opens and closes by moving between the closed position and the open position due to its rotation. The opening 3A of the frame body 3 is opened and closed by the door body 2 opening and closing.

[0015] The frame body 3 is a rectangular opening frame (door frame) and is installed in an opening of a building. The frame body 3 has four frames 20-23 (an upper frame 20, a lower frame 21, and a pair of vertical frames 22, 23) that are combined with each other, and the frames 20-23 form a rectangular opening 3A. The frames 20-23 are frame materials that make up the frame body 3, and are each made of shaped members (extruded shapes) formed by extrusion molding. The upper frame 20 and the lower frame 21 are upper and lower horizontal frames of the frame body 3, and extend in the horizontal direction (left-right direction S) at the top and bottom of the frame body 3. The pair of vertical frames 22, 23 are side frames located on the left and right sides of the frame body 3, and extend in the vertical direction (up-down direction R) at the sides of the frame body 3. The ends of the upper frame 20, the lower frame 21, and the left and right vertical frames 22, 23 are connected to each other to form the frames 20-23.

[0016] The four frames 20-23 of the frame body 3 each have opposing portions 20A-23A that face the outer periphery of the door element 2 and receiving portions 20B-23B that receive the door element 2. The opposing portions 20A-23A are inner peripheries of the frame body 3 and are arranged along the indoor-outdoor direction T. When the door element 2 is closed (when the door element 2 is arranged in the fully closed position inside the frame body 3), the opposing portions 20A-23A face the outer periphery of the door element 2 with a gap between them. The receiving portions 20B-23B are located on the side of the opposing portions 20A-23A and the door element 2 in the closing direction H of the door element 2 (on the indoor side), and are arranged opposite the door element 2 in the indoor-outdoor direction T. The receiving portions 20B-23B have elastically deformable tension members 20C-23C that come into contact with the door element 2. When the door body 2 is closed, the door body 2 abuts against and is received by the receiving portions 20B to 23B (tight members 20C to 23C), and the areas between the door body 2 and the receiving portions 20B to 23 are blocked.

[0017] The door body 2 has left and right vertical edges 2A, 2B and a locking portion 2C that locks to the frame body 3. The vertical edges 2A, 2B are edges located on the left and right sides of the door body 2 and extend vertically. The vertical frames 22, 23 of the frame body 3 face the vertical edges 2A, 2B of the door body 2 and extend along the vertical edges 2A, 2B. Of the left and right vertical edges 2A, 2B of the door body 2, one vertical edge 2A is a hanging edge (first vertical edge) located on the hanging edge side of the door body 2, and the other vertical edge 2B is a door edge (second vertical edge) located on the door edge side of the door body 2. The locking portion 2C is located in the middle of the vertical edge 2B, which is the door edge, in the up-down direction R, and is locked to the vertical frame 23 when the door body 2 is closed.

[0018] The middle part of the vertical edge 2B of the door body 2 is a part located in the middle of the vertical edge 2B in the up-down direction R, and is located between the upper and lower ends of the vertical edge 2B. The locking part 2C is, for example, a latch that is received and locked in a latch receiver of the vertical frame 23, or a lock that is received and locked in a lock receiver of the vertical frame 23. By locking the locking part 2C to the vertical frame 23, the middle part of the vertical edge 2B of the door body 2 is restrained by the vertical frame 23, and movement of the middle part of the vertical edge 2B of the door body 2 in the opening direction K and opening of the door body 2 are restricted.

[0019] The door body 2 has a pair of surface materials 30, 40 (a first surface material 30 and a second surface material 40) and a framework 4 that supports the pair of surface materials 30, 40. The framework 4 is located inside the door body 2 and extends along the outer periphery of the door body 2. The framework 4 is disposed between the pair of surface materials 30, 40 in the indoor-outdoor direction T, and is sandwiched between the pair of surface materials 30, 40. The pair of surface materials 30, 40 are members that are located on the surfaces of the door body 2, and face each other in the indoor-outdoor direction T, with the framework 4 sandwiched between them. The surface materials 30, 40 are made of, for example, a metal (steel, aluminum alloy, etc.) plate material, and are formed by bending the plate material.

[0020] The first surface material 30 is an opening direction K-side surface material (outdoor surface material) located on the opening direction K side (outside the room) of the door body 2, and is located on the opening direction K side of the door body 2 with respect to the aggregate 4 and the second surface material 40. The second surface material 40 is a closing direction H-side surface material (indoor surface material) located on the closing direction H side (inside the room) of the door body 2, and is located on the closing direction H side of the door body 2 with respect to the aggregate 4 and the first surface material 30. The pair of surface materials 30, 40 are located on the front surface of the door body 2 in the indoor-outdoor direction T, and are bent from the front surface toward the outer periphery of the door body 2 to be located on the outer periphery of the door body 2 (the upper surface, lower surface, and left and right side surfaces of the door body 2). The surface materials 30, 40 are bonded to the aggregate 4 with an adhesive and connected to the aggregate 4.

[0021] The first surface member 30 is located on the surface of the door body 2 on the opening direction K side (outside the room), and the second surface member 40 is located on the surface of the door body 2 on the closing direction H side (inside the room). The surface members 30, 40 are located on the left and right vertical edge portions 2A, 2B of the door body 2. The framework 4 is located on the vertical edge portions 2A, 2B side inside the door body 2 and extends in the vertical direction (up-down direction R) along the vertical edge portions 2A, 2B. At the outer periphery of the door body 2, the surface members 30, 40 are located between the framework 4 extending along the vertical edge portions 2A, 2B and the vertical frames 22, 23, with a gap between them in the left-right direction S.

[0022] At the vertical edge 2A, which is the hanging portion of the door body 2, hinges 10 are provided at multiple locations in the up-down direction R of the vertical edge 2A. The hinges 10 are attached to the framework 4 of the vertical edge 2A and the vertical frame 22, rotatably connecting the framework 4 to the vertical frame 22 and supporting the framework 4, the vertical edge 2A of the door body 2, and the surface materials 30, 40. The vertical edge 2A of the door body 2, and the surface materials 30, 40 located at the vertical edge 2A of the door body 2, and the framework 4 are held by the hinges 10 and are restrained to the vertical frame 22 via the hinges 10. At the vertical edge 2B, which is the door tip of the door body 2, locking portions 2C are attached to the framework 4 of the vertical edge 2B and connect the framework 4 to the vertical frame 23, restricting the movement of the framework 4. At the middle of the vertical edge 2B of the door body 2, the vertical edge 2B of the door body 2, and the surface materials 30, 40 and aggregate 4 located on the vertical edge 2B of the door body 2 are held by the locking portion 2C and are restrained to the vertical frame 23 via the locking portion 2C.

[0023] FIG. 4 is a cross-sectional view showing a portion including the vertical frame 23 of the fitting 1 of this embodiment, and shows an enlarged view of a portion of FIG. As shown in the figure, when the door body 2 is closed, the receiving portions 20B to 23B of the frame body 3 (only the receiving portion 23B of the vertical frame 23 is shown in FIG. 4) are located on the closing direction H side of the door body 2 (on the room side) with respect to the second surface member 40 of the door body 2. The receiving portions 20B to 23B come into contact with the second surface member 40 of the door body 2 by the tension members 20C to 23C and receive the second surface member 40 of the door body 2. In this state, the areas between the second surface member 40 of the door body 2 and the receiving portions 20B to 23 are blocked.

[0024] The frame 4 has a wall 4A facing the outer periphery and vertical edge 2B of the door body 2, and two connecting pieces 4B and 4C connected to the wall 4A. The two connecting pieces 4B and 4C are each bent at a 90° angle relative to the wall 4A, and the connecting pieces 4B and 4C intersect with the wall 4A at a 90° angle. The wall 4A is located between the first surface member 30 and the second surface member 40 and is arranged along the indoor-outdoor direction T. The connecting pieces 4B and 4C protrude in the left-right direction S from both ends of the wall 4A in the indoor-outdoor direction T and are arranged along the surface members 30 and 40, respectively. The surface members 30 and 40 are bonded and connected to the connecting pieces 4B and 4C with an adhesive. The second surface member 40 is located on the opposite side of the frame 4 from the first surface member 30 in the indoor-outdoor direction T.

[0025] The surface materials 30, 40 have front panels 31, 41 located on the front portion of the door body 2 in the indoor / outdoor direction T, side panels 32, 42 located on the side portions (periphery) of the door body 2 in the left-right direction S, and veneer panels 33, 43 protruding from the side panels 32, 42 toward the framework 4. The side panels 32, 42 are bent at a 90° angle relative to the front panels 31, 41, and the veneer panels 33, 43 are bent at a 90° angle relative to the side panels 32, 42. Therefore, the front panels 31, 41 and the side panels 32, 42 intersect at a 90° angle, and the side panels 32, 42 and the veneer panels 33, 43 intersect at a 90° angle.

[0026] The door body 2 has a restraining member 50 that restrains the first surface member 30, and the first surface member 30 has a catch portion 34 that is caught and restrained by the restraining member 50. The catch portion 34 is a veneer 33 of the first surface member 30 and is located inside the door body 2, arranged along the left-right direction S. The restraining member 50 is located between the front panel 31 of the first surface member 30 and the catch portion 34 in the indoor-outdoor direction T, and between the wall portion 4A of the aggregate 4 and the side panel 32 of the first surface member 30 in the left-right direction S, and is surrounded by the aggregate 4 and the first surface member 30. The restraining member 50 is a receiving member attached to the aggregate 4 and receives the catch portion 34 and the first surface member 30. The aggregate 4 restrains the catch portion 34 and the first surface member 30 via the restraining member 50.

[0027] The restraining member 50 has a fixing portion 51 fixed to the aggregate 4 and a restricting portion 52 that restricts displacement of the first surface member 30, and is located on the side surface portion side (outer periphery side) of the door body 2 and the vertical frame 23 side with respect to the aggregate 4. The fixing portion 51 comes into contact with the aggregate 4 (here, the wall portion 4A) and is fixed to the aggregate 4 with a screw 53 that serves as a fastener. The restraining member 50 is attached to the aggregate 4 by fixing the fixing portion 51 to the aggregate 4. The restricting portion 52 is a protruding portion that protrudes from the fixing portion 51 and the aggregate 4 in the left-right direction S, and protrudes from the fixing portion 51 and the aggregate 4 toward the side surface portion (outer periphery) of the door body 2 and is arranged along the left-right direction S.

[0028] The catch portion 34 of the first surface member 30 is an abutment portion that abuts against the restricting portion 52 and the restraining member 50, and is located on the side (inside the room) of the restricting portion 52 and the restraining member 50 in the closing direction H of the door body 2. The catch portion 34 abuts against the restricting portion 52 of the restraining member 50 from the side (inside the room) in the closing direction H of the door body 2, is received by the restricting portion 52, and is caught by the restricting portion 52. As a result, the restricting portion 52 of the restraining member 50 receives the catch portion 34 and the first surface member 30, and restricts the displacement of the catch portion 34 and the first surface member 30 in the opening direction K (outside the room). The restraining member 50 restrains the catch portion 34 and the first surface member 30 by the restricting portion 52. The aggregate 4 restrains only the catch portion 34 and the first surface member 30 by the restraining member 50 (restricting portion 52), and does not restrain the second surface member 40. Furthermore, the framework 4 restricts the catch portion 34 and the first surface member 30 from being displaced relative to the framework 4 in the opening direction K of the door body 2 via the restraining member 50 .

[0029] The restraining members 50 are provided at positions above and below the locking portion 2C of the door body 2 and attached to the frame 4. The upper and lower restraining members 50 are spaced apart from each other in the vertical direction R, at positions above and below the locking portion 2C. In the vertical direction R, the locking portion 2C is spaced apart from each of the upper and lower restraining members 50 and is located between the upper and lower restraining members 50. The restraining members 50 are attached to the upper and lower ends of the frame 4, respectively, and receive the hooking portion 34 and the first surface member 30 by the restricting portion 52. The frame 4 restrains the hooking portion 34 and the first surface member 30 by the restraining members 50 (restricting portion 52) at positions above and below the locking portion 2C. In addition, the aggregate 4 restrains the hook portion 34 and the first surface material 30 at a position spaced above the engaging portion 2C (the upper end of the aggregate 4) and at a position spaced below the engaging portion 2C (the lower end of the aggregate 4).

[0030] In the event of a fire, the heat of the fire breaks down the adhesive connecting each of the first and second surface materials 30 and 40 to the aggregates 4, and the adhesive connection of each of the first and second surface materials 30 and 40 to the aggregates 4 is released. In this state, the aggregates 4 are constrained only by the restraining material 50, and do not constrain the second surface material 40. As a result, in the event of a fire, the second surface material 40 is not constrained by the aggregates 4, but is separated from the aggregates 4 by the heat of the fire and becomes separated from the aggregates 4. In this way, in the event of a fire, the first surface material 30 is constrained and held by the aggregates 4 via the restraining material 50. In addition, the second surface material 40 is connected to the aggregates 4 in a manner that allows it to be separated by the heat of the fire.

[0031] Fig. 5 is a vertical cross-sectional view showing the normal state of the fitting 1 of this embodiment, and schematically shows the shape of the fitting 1. Fig. 6 is a horizontal cross-sectional view showing the state of the fitting 1 of this embodiment in the event of a fire, and similar to Fig. 4, shows a portion including the vertical frame 23 of the fitting 1. Fig. 7 is a vertical cross-sectional view showing the state of the fitting 1 of this embodiment in the event of a fire, and similar to Fig. 5, schematically shows the shape of the fitting 1.

[0032] As shown in the figure, in the event of a fire (here, when a fire breaks out on the indoor side of the fitting 1), the second surface member 40 separates from the aggregate 4, preventing the door body 2, including the first surface member 30, the second surface member 40, and the aggregate 4, from deforming as a single unit. This prevents the door body 2 from warping as a whole. When the first surface member 30 displaces in the opening direction K of the door body 2, it is kept constrained by the aggregate 4 and warps together with the aggregate 4 toward the opening direction K of the door body 2 due to the heat of the fire. In contrast, the second surface member 40 does not deform along with the aggregate 4. Instead, it is positioned inside the frame body 3 along the frame body 3 and the receiving portions 20B-23B and is kept received by the receiving portions 20B-23B. As a result, gaps are less likely to form between the frame body 3 and the second surface member 40.

[0033] Therefore, in the fitting 1 of this embodiment, the door body 2 has a simple structure, and it is possible to prevent gaps from occurring between the frame body 3 and the door body 2 in the event of a fire. This improves the fire resistance of the fitting 1. The surface materials 30, 40 and the aggregate 4 can be formed by simple bending processing, and can be formed inexpensively and accurately. Furthermore, the aggregate 4 restrains the first surface material 30 above and below the intermediate portion of the vertical edge portion 2B of the door body 2 that is locked to the vertical frame 23 by the locking portion 2C. This allows the first surface material 30 to be restrained by the aggregate 4 above and below the intermediate portion of the vertical edge portion 2B of the door body 2 that is prone to deformation, thereby suppressing deformation of the first surface material 30.

[0034] By attaching the restraining member 50 to the aggregate 4, the first surface member 30 can be easily restrained to the aggregate 4 via the restraining member 50. The catch portion 34 of the first surface member 30 catches on the regulating portion 52 of the restraining member 50, so that the first surface member 30 is stably restrained to the aggregate 4, and separation of the first surface member 30 from the aggregate 4 in the opening direction K of the door body 2 can also be suppressed.

[0035] The restraining member 50 is not limited to being located at two positions, above and below the locking portion 2C, but may be located at one or more other positions. Therefore, the positions at which the first surface member 30 is restrained by the aggregate 4 are not limited to being located at two positions, above and below the locking portion 2C, but may be located at one or more other positions. The first surface member 30 can be restrained to the aggregate 4 at various positions on the aggregate 4 within the door body 2. The opening direction K of the door body 2 may be toward the interior of the room. In this case, the first surface member 30 is located on the interior side of the aggregate 4, and the second surface member 40 is located on the exterior side of the aggregate 4. The present invention is not limited to entrance doors, but can be applied to various types of fittings that include a door body 2 and a frame 3.

[0036] FIG. 8 is a cross-sectional view showing another example of the fitting 1 of this embodiment, and similar to FIG. 4, shows a portion including the vertical frame 23 of the fitting 1. As shown in the figure, here, the door body 2 does not have the restraining member 50, and the aggregate 4 has the restraining portion 4D. The restraining portion 4D is a portion that corresponds to the restricting portion 52 of the restraining member 50, and is configured in the same manner as the restricting portion 52. The restraining portion 4D is formed integrally with the aggregate 4, constitutes a part of the aggregate 4, and receives and restrains the first surface member 30.

[0037] At each of the upper and lower ends of the aggregate 4, the wall portion 4A of the aggregate 4 is cut and raised to form upper and lower restraining portions 4D on the aggregate 4. The restraining portions 4D are protrusions formed on the aggregate 4, and protrude in the left-right direction S from the wall portion 4A toward the side portion (outer periphery) of the door body 2. The catch portions 34 of the first surface member 30 are received by the restraining portions 4D of the aggregate 4 and are caught by the restraining portions 4D of the aggregate 4. By integrally forming the restraining portions 4D on the aggregate 4, the first surface member 30 can be easily restrained by the aggregate 4 having a simple structure.

[0038] As described above, the present embodiment discloses the fittings described in the following (1) to (5).

[0039] (1) A fitting comprising a door body that opens in one of the opening directions of the outside and the inside of the room and closes in the closing direction, and a frame body to which the door body is connected so as to be able to open and close, The door body is a fixture having a frame, a first surface material located on the opening side of the frame and restrained by the frame in the event of a fire, and a second surface material located on the closing side of the frame and connected to the frame so as to be detachable by the heat of a fire. In the building fixture described in (1), the simple structure of the door body can prevent gaps from occurring between the frame and the door body in the event of a fire.

[0040] (2) In the fittings described in (1), The frame body has a vertical frame extending along a vertical edge portion of the door body, The door body has a locking portion located at a vertically intermediate portion of the vertical edge portion and locked to the vertical frame, The framework extends along the vertical edge portion and restrains the first surface material at positions above and below the engaging portion. In the building fixture described in (2), the first surface material can be restrained by the aggregate at the upper and lower parts of the middle part of the vertical edge of the door body, thereby suppressing deformation of the first surface material.

[0041] (3) In the fittings described in (1) or (2), the door body has a restraint member attached to the frame and receiving the first surface member; The aggregate is a fixture that restrains the first surface material via the restraining material. In the fittings described in (3), by attaching the restraining material to the aggregate, the first surface material can be easily restrained to the aggregate via the restraining material.

[0042] (4) In the fittings described in (3), the restraining material has a fixing portion fixed to the aggregate and a restricting portion that receives the first surface material and restricts displacement of the first surface material in the opening direction, The first surface material is a fitting having a catch portion that is received and caught by the restricting portion. In the fitting described in (4), the first surface material is stably restrained to the aggregate, and separation of the first surface material from the aggregate in the opening direction of the door body can be suppressed.

[0043] (5) In the fittings described in (1) or (2), The aggregate is a fixture having a restraining portion formed integrally with the aggregate and receiving and restraining the first surface material. In the fittings described in (5), the first surface material can be easily restrained by the aggregate having a simple structure. [Explanation of symbols]

[0044] 1...door, 2...door body, 2A...vertical edge portion, 2B...vertical edge portion, 2C...locking portion, 3...frame body, 3A...opening, 4...frame material, 4A...wall portion, 4B...connecting piece, 4C...connecting piece, 4D...restraint portion, 10...hinge, 20...upper frame, 20A...facing portion, 20B...receiving portion, 20C...tight material, 21...lower frame, 21A...facing portion, 21B...receiving portion, 21C...tight material, 22...vertical frame, 22A...facing portion, 22B...receiving portion, 2 2C···Tight material, 23···Vertical frame, 23A···Facing part, 23B···Receiving part, 23C···Tight material, 30···First surface material, 31···Front panel, 32···Side panel, 33···Veneer, 34···Hooking part, 40···Second surface material, 41···Front panel, 42···Side panel, 43···Veneer, 50···Restraining material, 51···Fixing part, 52···Regulating part, 53···Screw, H···Closing direction, K···Opening direction, R···Up and down direction, S···Left and right direction, T···Indoor / outdoor direction.

Claims

1. A door that opens in one of an outdoor direction and an indoor direction and closes in a closing direction, and a frame to which the door is connected so as to be openable and closable. The door body is a fixture having a frame, a first surface material located on the opening side of the frame and restrained by the frame in the event of a fire, and a second surface material located on the closing side of the frame and connected to the frame so as to be detachable by the heat of a fire.

2. In the fittings according to claim 1, The frame body has a vertical frame extending along a vertical edge portion of the door body, The door body has a locking portion located at a vertically intermediate portion of the vertical edge portion and locked to the vertical frame, The framework extends along the vertical edge portion and restrains the first surface material at positions above and below the engaging portion.

3. In the fittings according to claim 1 or 2, the door body has a restraining member attached to the frame and receiving the first surface member; The aggregate is a fixture that restrains the first surface material via the restraining material.

4. In the fittings according to claim 3, the restraining material has a fixing portion fixed to the aggregate and a restricting portion that receives the first surface material and restricts displacement of the first surface material in the opening direction, The first surface material is a fixture having a hook portion that is received and hooked onto the restricting portion.

5. In the fittings according to claim 1 or 2, The aggregate has a restraining portion formed integrally with the aggregate and receiving and restraining the first surface material.

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