JP6450171B2 - door - Google Patents

Description

  The present invention relates to a door.

2. Description of the Related Art Conventionally, a technique for improving fire prevention performance in a fitting such as a door is known (see, for example, Patent Document 1).
By the way, there is a case where an opening is further formed in the door provided in the joinery, and a shoji or glass is fitted into the opening. For example, in a door with a shoji fitted in the opening, if the shoji is opened, indoor ventilation can be performed without opening the door.

JP 2013-79563 A

  However, in such a door, the frame around the opening formed in the door is warped due to heat in a fire, and a gap may be generated between the door and the shoji fitted in the opening formed in the door. There is sex. In a fire, when a gap is generated between a door and a shoji, flame and smoke pass through the gap.

  In order to solve such a problem, it is conceivable to prevent the frame from warping by arranging a core material not only inside the door ridge but also inside an opening frame formed in the door. Thus, if the curvature of the frame of the opening formed in the door is prevented, the fireproof performance of the joinery can be improved.

  However, fire prevention performance required for joinery has increased further in recent years, and the warpage of the door itself is sufficiently suppressed by simply placing the core material inside the opening frame formed in the door in the door in which the opening is formed. In some cases, satisfactory fire protection performance could not be obtained.

  This invention is made | formed in view of the said subject, and it aims at providing the door in which the opening was formed and the shoji or glass was inserted in the opening which improved fire prevention performance more.

  In order to achieve the above object, the present invention is a door (for example, a door 1 described later) that can be opened and closed inside a housing opening (for example, a housing opening A described later) formed in a building, A vertical rod (for example, vertical rod 23 and vertical rod 24 to be described later) and a horizontal rod (for example, upper rod 21 and lower rod 22 to be described later) are braided and a vertical core material (for example, vertical core material 202 to be described later) is used. A housing (e.g., a later-described housing 20), an opening formed inside the housing (e.g., an opening 30 described later), and a shoji or glass fitted into the opening (e.g., A shoji 40 (described later), a vertical frame (for example, an opening vertical frame 53 and an opening vertical frame 54 described later) and a horizontal frame (for example, an opening upper frame 51 and an opening described later) are arranged around the opening. And an opening core material (for example, an opening core described later). 502) having an opening frame (for example, an opening frame 50 described later), and the opening core material is a main body (for example, a main body 552 described later) disposed around the opening. ) And extending portions (for example, extending portions 562a, 562b, and 562c described later) extending from the main body portion and extending to the core material.

In the present invention, an opening frame body has an opening core material in a door provided with a shoji or glass that has an opening formed inside the housing and is fitted inside the opening. Furthermore, an opening part core material shall have a main-body part arrange | positioned around the opening part, and an extension part extended from the main-body part to the saddle-core material which a housing has.
Thereby, it can prevent that not only the curvature of an opening part frame body but the door itself warps by the heat at the time of a fire. By preventing the door itself from warping, not only between the door and the shoji or glass, but also between the door and the fixed frame fitted with the door, there is a gap through which flames and smoke pass. Since it can prevent, the fire prevention performance of a door improves further.

  The main body includes a vertical core (for example, an opening vertical frame core 532 and an opening vertical frame core 542 described later) and a horizontal core (for example, an opening upper frame core 512 and an opening below the opening). Preferably, the extending portion is formed by extending at least one of the vertical core material and the horizontal core material and extending to the core material.

  Moreover, it is preferable that the said extension part is formed by the said vertical core material extending and extending to the said core material.

  Moreover, it is preferable to provide the shoji (for example, the shoji 40 mentioned later) engage | inserted in the said opening part so that opening and closing is possible.

  According to the present invention, an object of the present invention is to provide a door in which an opening is formed and a shoji or glass is fitted in the opening, which has improved fire prevention performance.

It is the figure which looked at the fitting provided with the door which concerns on one Embodiment of this invention from the outdoor side. It is the figure which looked at the fitting provided with the door which concerns on the said embodiment from the indoor side. It is a longitudinal cross-sectional view of the door which concerns on the said embodiment. It is a cross-sectional view of the door according to the embodiment. It is the figure which looked at the door which concerns on the said embodiment from the indoor side, Comprising: It is a figure which shows the door except the surface material etc. of the indoor side. FIG. 6 is an enlarged view of a region R <b> 1 in FIG. 5, illustrating a method for connecting a vertical frame core material and a horizontal frame core material. It is an expansion perspective view of field R2 of Drawing 5, and is a figure showing about the connection part of a vertical frame core material and a recumbent core material. It is an expansion perspective view of field R2 of Drawing 5, and is a figure showing about the connection part of a vertical frame core material and a recumbent core material.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
Drawing 1 is a figure which looked at fitting 100 provided with door 1 concerning this embodiment from the outdoor side. FIG. 2 is a view of the joinery 100 including the door 1 according to the present embodiment as viewed from the indoor side. The door 1 is a hinged door such as an entrance door. In this specification, “hanging side” means the hanging side of the door 1, and “door side” means the door side of the door 1.
The joinery 100 further includes a fixed frame body 110, hinges 121, 122, and 123, a door closer 130 (see FIG. 2), and a door guard 140 (see FIG. 2).

  The fixed frame 110 is arranged around the frame opening A formed in the building. The fixed frame body 110 is framed in a rectangular shape by a fixed upper frame 111 and a fixed lower frame 112 as horizontal frames, a fixed vertical frame 113 on a hanging side as a vertical frame, and a fixed vertical frame 114 on a door end side.

The hinges 121, 122, and 123 are connected to the fixed vertical frame 113 and the door 1 on the hanging side.
The door closer 130 is an upper side on the indoor side of the door 1 and is disposed closer to the suspension side than the center in the direction in which the door 1 is found (the width direction of the door 1). The door closer 130 has a main body connected to the door 1 and an arm connected to the fixed upper frame 111, respectively, and automatically closes the door 1.

  The door guard 140 includes a door guard main body portion 141 arranged in the door 1 and formed in a loop shape, and a door guard receiving portion 142 arranged in the fixed vertical frame 114 on the door end side and engageable with the door guard main body portion 141. Have. The door guard 140 restricts the door 1 from being opened by engaging the door guard body 141 with the door guard receiving portion 142.

The door 1 is fitted in a housing opening A formed in the building so as to be openable and closable. Specifically, the door 1 is suspended inside the fixed frame 110 by hinges 121, 122, and 123.
The door 1 includes a housing 20, an opening 30, a shoji 40, an opening frame 50, an outdoor side member 61, an outdoor side handle 62, cylinders 63 and 64, an indoor side member 71, An inner handle 72, thumb turns 73 and 74, and a lattice 80 are provided.

The housing 20 is disposed so as to surround the four circumferences of the door. The frame 20 is assembled in a rectangular shape by an upper rod 21 and a lower rod 22 as horizontal rods, a vertical rod 23 on a hanging side as a vertical rod, and a vertical rod 24 on a door-end side.
The opening 30 is inside the housing 20 and is formed closer to the suspension side than the center in the direction in which the door 1 is found (the width direction of the door 1).

The shoji 40 is fitted inside the opening 30. The shoji 40 is a vertical shovel type shoji. If the shoji 40 is opened, indoor ventilation and ventilation (winding) can be performed without opening the door 1.
The shoji 40 includes a wind collecting housing 41, a glass 42, and a handle 43 (see FIG. 2). The wind collecting housing 41 is assembled in a rectangular shape by a wind collecting upper rod 411 and a wind collecting lower rod 412 as a horizontal rod, a hanging vertical wind rod 413 as a vertical rod, and a wind collecting vertical rod 414 on a door end side (FIG. 2). The glass 42 is fitted inside the wind collecting housing 41. The handle 43 is disposed on the indoor side of the wind-drawing vertical shaft 413 on the hanging side. The hanging element of the shoji 40 is disposed on the door end side of the door 1, and the door of the shoji 40 is disposed on the hanging element side of the door 1.

  The opening frame 50 is disposed around the opening 30. The opening frame 50 is framed in a rectangular shape by an opening upper frame 51 and an opening lower frame 52 as horizontal frames, an opening vertical frame 53 on a hanging side as a vertical frame, and an opening vertical frame 54 on a door-end side. The

The outdoor side member 61 is disposed on the outdoor side surface of the door 1 (see FIG. 1).
The outdoor handle 62 is disposed at a substantially central portion in the height direction on the outdoor door end side of the door 1. By grasping the outdoor handle 62 from the outdoor side and pulling the door 1 to the outdoor side, the door 1 can be opened by rotating around the hinges 121, 122, and 123.

  The cylinders 63 and 64 are disposed above and below the outdoor handle 62, respectively. The cylinders 63 and 64 can be rotated by inserting a key. A dead bolt (not shown) can be operated by rotating the cylinders 63 and 64. The fitting 100 can be locked by operating the dead bolt.

The indoor side member 71 is disposed on the indoor side surface of the door 1 (see FIG. 1).
The indoor handle 72 is disposed at a substantially central portion in the height direction on the indoor door tip side of the door 1. By grasping and pulling the indoor handle 72 from the outdoor side, the door 1 can be opened by rotating around the hinges 121, 122, and 123.

  The thumb turns 73 and 74 are arranged above and below the indoor handle 72, respectively. The joinery 100 can also be locked by operating a dead bolt (not shown) by rotating the thumb turns 73 and 74.

The lattice 80 is disposed on the outdoor side of the opening 30 (the shoji 40). The lattice 80 includes a vertical lattice 81 and a horizontal member 82.
The vertical lattice 81 extends from the upper end to the lower end of the door 1. The horizontal member 82 is arranged on the shoji side of the vertical lattice 81 and intersects the vertical lattice 81 at a right angle at a substantially central portion in the height direction of the vertical lattice 81.

FIG. 3 is a longitudinal sectional view of the door 1.
As shown in FIG. 3, the glass 42 is a multi-layer glass including a plate glass 421 on the outdoor side, a plate glass 422 on the indoor side, and a spacer 423 sandwiched between these two plate glasses, and has excellent heat insulation properties. Have
The door 1 has a net 65 arranged on the outdoor side of the glass 42. The net 65 prevents the insects and the like from entering the room when the shoji 40 is opened to connect the outdoors and the room through the opening 30. Further, the door 1 has a heat insulating material H disposed between the outdoor side material 61 and the indoor side material 71. The heat insulating material H is made of, for example, expanded polystyrene.

  The upper collar 21 includes a resin upper collar 211 having a U-shaped cross section, an upper collar core material 212 having a U-shaped cross section disposed inside the resin upper collar 211, and an edge that covers an edge portion of the upper collar 21 Member 213. The resin upper collar 211 and the upper collar core 212 are connected by a rivet 21a.

  The opening upper frame 51 includes an opening upper frame main body 511, an opening upper frame core member 512, and an opening upper frame inner core member 513.

  The opening upper frame main body 511 has a hollow structure having a hollow portion 511a. Moreover, the opening part upper frame main body 511 has the extension part 511b extended below. The extending portion 511b extends downward while bending outward. The opening upper frame main body 511 is made of aluminum, for example. More specifically, the opening upper frame main body 511 is obtained by extrusion-molding aluminum.

  The opening upper frame main body 511 has a heating foam material 511c disposed on the indoor side of the base end side of the extension portion 511b, an airtight material 511d disposed in the vicinity of the heating foam material 511c, and the heating foam material 511c. A heating foam material 511e disposed on the indoor side on the front end side, a mesh push bar 511f for fixing the mesh 65 disposed in the vicinity of the heating foam material 511e, and an opening upper frame body 511 (extension portion 511b) And a peeling prevention tool 511g for preventing the heating foam material 511e from peeling off.

  The opening upper frame core member 512 is disposed above the opening upper frame body 511. The opening upper frame core member 512 is a long member having a C-shaped cross section opened upward, and is made of, for example, stainless steel. The opening upper frame core member 512 is fixed to the opening upper frame main body 511 by a rivet 512a on the outdoor side, and is fixed to a molding fixing member 516 (described later) by a rivet 512b on the indoor side. Between the opening upper frame core member 512 and the opening upper frame body 511, a part of the outdoor side member 61 and the heating foam material 512c are disposed. Between the opening upper frame core member 512 and the molding fixing member 516, a part of the indoor side member 71 and the heating foam member 512d are disposed.

  The opening upper frame inner core member 513 is disposed in the hollow portion 511 a of the opening upper frame main body 511. The opening upper frame inner core member 513 is a C-shaped long member whose cross section is open upward, and is made of, for example, stainless steel.

  Further, the door 1 includes an opening outdoor upper molding member 514, an opening room upper molding member 515, and a molding fixing member 516.

  The opening outdoor upper molding member 514 is disposed on the outdoor side of the opening upper frame 51. The opening outdoor upper molding member 514 is connected to an opening outdoor suspension-side molding member 534 and an opening outdoor door-end molding member 544 described later by screws (not shown). The opening outdoor upper molding member 514 covers the outdoor side of the opening upper frame 51 from the upper collar 21.

The upper molding member 515 in the opening room is disposed on the indoor side of the opening upper frame 51.
The molding fixing member 516 is a member for fixing the upper molding member 515 in the opening chamber, and is fastened to the opening upper frame main body 511 by a screw 516a. The upper molding member 515 in the open room is fixed to the molding fixing member 516 by snap fitting.

  The wind sampling upper ridge 411 has a hollow structure having a hollow portion 411a. Moreover, the wind sampling upper ridge 411 has the extension part 411b extended upwards, and the groove part 411c formed in the downward direction. A heating foam 411d is affixed to the upper surface of the wind collecting upper 411, and a heating foam 411e is affixed to the outdoor side of the extending portion 411b. It is fixed by a metal fitting 411f. Inside the groove portion 411c, a C-shaped wind-up upper core material 411g having a cross-section opened downward is arranged, and a heating foam material 411h is arranged inside the wind-up upper core material 411g.

The wind-up upper fence 411 contacts the airtight material 511d on the outdoor side when the shoji 40 is closed.
The upper end portion of the glass 42 is fitted into the groove portion 411c and is sandwiched by the wind-up upper tub 411 via the glazing channel 411i.

  The lower rod 22, the opening lower frame 52, and the wind collecting lower rod 412 have substantially the same structure as the upper rod 21, the opening upper frame 51, and the wind collecting upper rod 411, respectively. For the lower rod 22, the opening lower frame 52, and the wind collecting lower rod 412, the same structures as those of the upper rod 21, the opening upper frame 51, and the wind collecting upper rod 411 are denoted by corresponding reference numerals, and the description thereof is omitted. Will be described.

The opening lower frame main body 521 is disposed on the outdoor side and has a drain valve 521j for draining rainwater and the like from the hollow portion 521a.
In the opening lower frame inner core member 523, heating foam materials 523a and 523b are disposed on the outdoor side and the indoor side, respectively.
Also, a wind-trapped inner core material 412j having an M-shaped cross section is disposed inside the hollow portion 412a, and a buffer material 412k that supports the glass 42 is disposed on the heating foam material 412h inside the groove portion 412c. Be placed.

  Furthermore, the door 1 has an upper arm S1 connected to the opening upper frame 51 and the wind-up upper rod 411, and a lower arm S2 connected to the opening lower frame 52 and the wind-up lower rod 412. The shoji 40 is suspended inside the opening 30 so as to be openable and closable by the upper arm S1 and the lower arm S2.

FIG. 4 is a cross-sectional view of the door 1. In FIG. 4, the cross section of the vertical lattice 81 is not shown.
The hanging hook 23 has a U-shaped cross section, a U-shaped cross section, a U-shaped cross section disposed inside the resin vertical section 231, and an edge of the vertical section 23. And an edge member 233 that covers the portion. The resin vertical rod 231, the vertical rod core material 232 and the edge member 233 are connected by a screw 23 a.

The opening vertical frame 53 includes an opening vertical frame main body 531 and an opening vertical frame core member 532.
The opening part vertical frame main body 531 has the extension part 531b extended to the door-end side. The opening vertical frame main body 531 is made of aluminum, for example. More specifically, the opening vertical frame main body 531 is obtained by extrusion-molding aluminum.

  The opening vertical frame main body 531 includes a heating foam material 531c disposed on the indoor side surface, an airtight material 531d disposed in the vicinity of the heating foam material, and a heating foam material disposed on the indoor side of the extending portion 531b. 531e, a net pushing bar 531f for fixing the net 65 disposed in the vicinity of the heating foam material 531e, and a peeling for preventing the heating foam material 511e from being peeled from the opening vertical frame main body 531 (extension part 531b). And a preventive tool 531g. A heating foam material 531h is disposed on the surface on the hanging base side of the opening vertical frame main body 531.

  The opening vertical frame core material 532 is disposed on the suspension base side of the opening vertical frame main body 531. The opening vertical frame core member 532 is a C-shaped long member whose cross section is open to the suspension side, and is made of, for example, stainless steel. The opening vertical frame core member 532 is fixed to the opening vertical frame main body 531 by a rivet 532a on the outdoor side, and fixed to a molding fixing member 536 to be described later by a rivet 532b on the indoor side. Between the opening vertical frame core material 532 and the opening vertical frame main body 531, a part of the outdoor side material 61 and the heating foam material 532 c are arranged. Between the opening vertical frame core material 532 and the molding fixing member 536, a part of the indoor side material 71 and the heating foam material 532d are disposed.

  In addition, the door 1 includes an opening outdoor suspender side molding member 534, an opening room suspending source side molding member 535, and a molding fixing member 536.

  The opening part outdoor suspension origin side molding member 534 is arranged on the outdoor side of the opening part vertical frame 53. The opening portion outdoor suspension side molding member 534 is connected to the horizontal member 82 by a screw 534a. Moreover, the opening part outdoor suspension origin side molding member 534 is fixed to the opening part vertical frame 53 by the molding fixing member 534b, and is fixed to the heat insulating material H by the molding fixing member 534c.

The in-open room suspender-side molding member 535 is arranged on the indoor side of the opening vertical frame 53.
The molding fixing member 536 is a member for fixing the opening-side suspending-side molding member 535, and is fastened to the opening vertical frame main body 531 by a screw 536a. The open-side suspending-side molding member 535 is fixed to the molding fixing member 536 by snap fitting.

  The wind sampling downpipe 413 has a hollow structure having a hollow portion 413a. Moreover, the wind sampling downpipe 413 has the groove part 413c formed in the door-end side. Inside the hollow part 432a, a C-shaped wind-drawing vertical inner core material 413j whose cross section is open to the door end side is disposed. Inside the groove portion 413c, a C-shaped wind-insulated vertical core material 413g having a cross-section open to the door end side is disposed, and a heating foam material 413h is disposed inside the wind-insulated vertical core material 413g.

The wind sampling hoist 413 contacts the airtight material 531d on the outdoor side when the shoji 40 is closed.
The end of the glass 42 on the suspending side is fitted into the groove 413c and is sandwiched between the wind sampling hoist 413 through the glazing channel 413i.

  The door 1 has a lock mechanism L that restricts the opening of the shoji 40 between the vertical frame 53 on the suspending side and the windpipe 413. The lock mechanism L is operated by the handle 43.

  The vertical rod 24 on the door-end side, the opening vertical frame 54, and the wind sampling vertical rod 414 have substantially the same structure as the vertical rod 23 on the hanging side, the opening vertical frame 53, and the wind sampling vertical rod 413. For the vertical rod 24, the opening vertical frame 54 and the wind sampling vertical rod 414 on the lower door end side, the same symbols are assigned to the same structures as the vertical rod 23, the opening vertical frame 53 and the wind sampling vertical rod 413 on the hanging side. Therefore, the description is omitted, and a structure different from these will be described.

The resin ridges 241 on the door end side are separately arranged on the outdoor side and the indoor side. The edge member 243 has an extending portion 243a that contacts the fixed vertical frame 114 when the door 1 is closed.
A heating foam material 541i and a heating foam material 414m are arranged to face each other on the suspension base side of the opening vertical frame main body 541 on the door tip side and the door tip side of the wind sampling vertical ridge 414 on the door tip side, respectively. Further, an extending member 541j and an extending member 414n that are bent and extended are respectively arranged on the suspension base side of the opening vertical frame main body 541 on the door tip side and the door tip side of the wind sampling vertical rod 414 on the door tip side. The

FIG. 5 is a view of the door 1 as seen from the indoor side. Thereby, the opening part core material 502 which the opening part frame 50 has is demonstrated. In FIG. 5, it is a figure of the state which excluded members other than the opening core material 502 among the indoor side material 71, the shoji 40, and the opening frame 50, and members other than the hook core material 202 among the housings 20. .
As shown in FIG. 5, the door 1 has a piece of wood 130 a disposed on the upper side of the suspension base. The wooden piece 130a is a table on which the door closer 130 is installed.

  The housing 20 (not shown in FIG. 5, see FIGS. 1 and 2) has a core material 202. As shown in FIG. 5, the saddle core material 202 is composed of an upper collar core material 212 and a lower collar core material 222 that are horizontal core materials, a vertical saddle core material 232 on a hanging base side that is a vertical core material, and a doorside side material. It is braided into a rectangular shape by the vertical core material 242.

The opening frame 50 (not shown in FIG. 5, see FIGS. 1 and 2) has an opening core member 502. The opening core material 502 includes an opening upper frame core material 512 and an opening lower frame core material 522 which are horizontal core materials, an opening vertical frame core material 532 on a suspension base side which is a vertical core material, and an opening on the door end side. It is framed by the part vertical frame core material 542.
The opening core material 502 includes a main body portion 552 disposed around the opening portion 30, and extending portions 562 a, 562 b, and 562 c extending from the main body portion 552 and extending to the collar core material 202.

  More specifically, the extending part 562a is formed by the opening vertical frame core member 532 on the hanging base side extending downward and extending to the lower rod core member 222. The extending part 562b is formed by the door vertical opening core material 542 extending upward and extending to the upper core material 212. The extension part 562c is formed by the door vertical opening core material 542 extending downward and extending to the lower saddle core material 222.

FIG. 6 is an enlarged view of a region R1 in FIG.
The opening upper frame core member 512 has an extended portion 512e that is bent and extended from the end portion. As shown in FIG. 5, the opening upper frame core material 512 and the opening vertical frame core material 532 are fastened by a rivet 512 f between the extension portion 512 e and the door end side surface of the opening vertical frame core material 532. It is connected by doing. The connecting portion between the other horizontal frame core member and the vertical frame core member has the same structure as the connecting portion between the opening upper frame core member 512 and the opening vertical frame core member 532.

7A and 7B are enlarged views of a region R2 in FIG. 7A shows a state before the opening vertical frame core material 542 and the lower collar core material 222 are connected, and FIG. 7B shows a state where the opening vertical frame core material 542 and the lower collar core material 222 are connected. FIG.
As shown to FIG. 7A, it has the extended part 542e extended from the edge part of the opening part vertical frame core material 542, and bent.

  As shown in FIG. 7B, the opening vertical frame core material 542 extends to the lower iron core material 222 and swallows the extending portion 542 e into the groove formed by the lower iron core material 222. Thus, the opening vertical frame core material 542 and the lower collar core material 222 are connected without using a fastening member such as a screw or a rivet. Note that the connecting portion between the other vertical frame core member and the horizontal core member has the same structure as the connection portion between the opening vertical frame core member 542 and the lower iron core member 222.

According to the door 1 which concerns on this embodiment, the following effects are show | played.
In the present embodiment, in the door 1 including the shoji 40 in which the opening 30 is formed inside the housing 20 and fitted inside the opening 30, the opening frame 50 has the opening core member 502. . Furthermore, the opening core material 502 includes a main body portion 552 disposed around the opening portion 30, and extending portions 562 a, 562 b, 562 c extending from the main body portion 552 and extending to the core core material 202 of the housing 20. .
Thereby, it can prevent that not only the curvature of the opening part frame body 50 but the door 1 itself warp by the heat at the time of a fire. By preventing the door 1 itself from warping, it is possible to prevent a gap through which a flame or smoke passes not only between the door 1 and the shoji 40 but also between the door 1 and the fixed frame 110. it can. Therefore, the fireproof performance of the door 1 is sufficiently improved.

In the present embodiment, the extending portions 562a, 562b, and 562c are the vertical core members (opening vertical frame core member 532 and opening vertical frame core member 542) and horizontal core members (opening portions) that constitute the main body portion 552. At least one of the upper frame core material 512 and the opening lower frame core material 522) extends to the core material 202. That is, in the present embodiment, at least one of the vertical core material and the horizontal core material constituting the main body portion 552 also configures the extended portions 562a, 562b, and 562c.
Thereby, since it can prevent more strongly that the door 1 itself warps, the fireproof performance of the door 1 can be improved more effectively.

Further, in the present embodiment, the extending portions 562a, 562b, 562c are formed by extending the vertical core material (the opening vertical frame core material 532 and the opening vertical frame core material 542) constituting the main body portion 552. It was assumed to extend to 202.
Since the door 1 is longer in the height direction than in the width direction, warping tends to occur in the height direction due to heat. Since the vertical core material is extended to form the extended portions 562a, 562b, and 562c, the door 1 itself can be prevented from warping in the height direction. Can be improved.

Moreover, in this embodiment, the shoji 40 was fitted in the opening part 30 so that opening and closing was possible.
Thereby, indoor ventilation and ventilation (winding) can be performed by opening the shoji 40 without opening the door 1. Further, when the opening 30 is formed in the door 1 and the shoji 40 that can be opened and closed is fitted into the opening 30, it is usually difficult to obtain a high fireproof performance. A sufficiently satisfactory fireproof performance is obtained by 562a, 562b, and 562c.

It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
In the above-described embodiment, the extending portions 562a, 562b, 562c extend from the opening vertical frame core material 532 or the opening vertical frame core material 542 and extend to the horizontal core material (the upper core material 212 or the lower core material 222). However, the present invention is not limited to this. In the present invention, the extending portion may extend from the horizontal core material and extend to the vertical core material.

  In the present embodiment, the extending portions 562a, 562b, and 562c are integrated with a part of the main body portion 552 (the opening vertical frame core material 532 or the opening vertical frame core material 542). The invention is not limited to this. For example, in the present invention, the extension portion may be extended from a portion that is not an end portion of the vertical core material or horizontal core material, with the extension portion being a separate member from the main body portion.

  In the above embodiment, in the structure of the region R2 in FIG. 5, the extended portion 542e of the opening vertical frame core material 542 is swallowed into the groove formed by the lower iron core material 222. The structure can be modified or improved as appropriate. For example, the extending portion 542e may be fitted with a groove formed by the lower core material 222.

  Further, the extending portion 542e does not always need to contact the inside of the groove formed by the lower core material 222. If the extension part 542e does not always contact the inside of the groove of the lower core material 222, the extension part 542e extends when the opening part vertical frame 54 (opening part vertical frame core material 542) tries to warp due to heat at the time of fire. Warpage of the opening vertical frame 54 (opening vertical frame core material 542) may be prevented by causing the protruding portion 542e to contact the inside of the groove of the lower core material 222. Moreover, you may connect the extension part 542e and the lower iron core material 222 using fastening members, such as a screw and a rivet.

  Moreover, in the said embodiment, although the door 1 was made into the opening door, this invention is applicable also to a sliding door. Furthermore, in the said embodiment, although the shoji 40 was engage | inserted inside the opening part 30, this invention is applicable also to the door (door which formed the FIX window) which inserted glass in the opening part 30. FIG.

1 ... door 20 ... frame 21 ... upper frame (horizontal frame)
22 ... Shimojo (horizontal frame)
23, 24 ... Longitudinal rod 202 ... Core material 30 ... Opening 40 ... Shoji (shoji or glass)
50 ... Opening frame 51 ... Opening upper frame (horizontal frame)
52 ... Opening lower frame (horizontal frame)
53, 54 ... Opening vertical frame (vertical frame)
502: Opening core material 512: Opening upper frame core material (horizontal core material)
522 ... Opening lower frame core material (horizontal core material)
552... Main body portion 562a, 562b, 562c... Extension portion 532, 542... Opening vertical frame core material (vertical core material)
A ... Housing opening

Claims (4)

It is a door that can be opened and closed in the interior of the housing opening formed in the building,
A frame that is assembled by vertical and horizontal planes and has a vertical core;
An opening formed inside the housing;
Shoji or glass fitted into the opening,
An opening frame disposed around the opening and framed by a vertical frame and a horizontal frame and having an opening core;
The opening core material has a main body portion disposed around the opening portion, and an extending portion extending from the main body portion and extending to the core material,
The extension part of the opening core material is connected only by swallowing the inside of the groove formed by the core material, does not contact the inside of the groove, and does not contact the inside of the groove by heat at the time of the fire. door you in contact with the inside. The main body portion is formed by being framed by a vertical core material and a horizontal core material,
The door according to claim 1, wherein the extending portion is formed by extending at least one of the vertical core material and the horizontal core material to extend to the core core material.   The door according to claim 2, wherein the extending portion is formed by extending the vertical core material to the core material.   The door according to any one of claims 1 to 3, further comprising a shoji that is fitted in the opening so as to be openable and closable.

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