JP7489840B2 - Switchgear - Google Patents

Description

The present invention relates to an opening and closing device.

As one of the techniques for locking the door opening and closing body installed at the opening of a building, a technique has been disclosed in which a main lock is provided in the center of the door end side and latch locks are provided at the upper and lower ends of the door (see, for example, Patent Document 1). In the opening and closing body, the latch of the main lock and the latch of the latch lock are arranged at the same position in the prospective direction, and in the frame material on the door end side that constitutes the frame body installed around the opening, the main lock side receiving part that receives the latch of the main lock and the latch lock side receiving part that receives the latch of the latch lock are arranged at the same position in the prospective direction.

JP 2013-249644 A

However, as described above, in the opening/closing body, the latch of the main lock and the latch of the latch lock are arranged in the same position in the prospective direction, and in the frame material on the door end side, the main lock side receiving part and the latch lock side receiving part are arranged in the same position in the prospective direction. Therefore, for example, if the opening/closing body warps in the prospective direction, it becomes difficult to lock the opening/closing body with either the main lock or the latch lock when the opening is fully closed by the opening/closing body. If a fire breaks out in the fully closed state, the warping of the opening/closing body caused by the heat of the fire cannot be suppressed, and the fire may easily spread from one side to the other in the prospective direction through the door. Therefore, there is room for improvement in terms of usability and fire resistance of opening/closing devices such as doors.

The present invention is intended to solve the problems in the conventional technology described above, and aims to provide an opening and closing device that can improve the usability and fire resistance of the opening and closing device.

In order to solve the above-mentioned problems and achieve the object, the opening and closing device according to claim 1 is an opening and closing device having at least one opening and closing body for opening and closing an opening of a building, the opening and closing device comprising: a first movement limiting means for limiting movement of the at least one opening and closing body in a fully closed state in which the opening is fully closed by the at least one opening and closing body, the first movement limiting means being located on the door end side in the fully closed state; and a second movement limiting means for limiting movement of the at least one opening and closing body in the fully closed state, the second movement limiting means being located outside the first movement limiting means in a front direction perpendicular to a direction from the door end side to the door end side in the fully closed state, The first movement limiting means and the second movement limiting means are configured so that the movement of the at least one opening-closing body can be limited by the first movement limiting means and the second movement limiting means in the fully closed state regardless of whether warping has occurred, and the first movement limiting means and the second movement limiting means are configured so that a first limiting position at which the at least one opening-closing body can be limited by the first movement limiting means and a second limiting position at which the at least one opening-closing body can be limited by the second movement limiting means are mutually different in a prospective direction at least in a state in which warping has not occurred, and the first movement limiting means is configured to move between a first lock body provided on the at least one opening-closing body and a periphery of the opening. the first lock receiving portion is provided on a frame material constituting a frame provided on an edge of the opening/closing body and positioned on the first lock main body side, the first lock receiving portion having a first engaged portion that engages with a first engaging portion that constitutes the first lock main body, the second movement limiting means comprises a second lock main body provided on the at least one opening/closing body, and a second lock receiving portion is provided on a frame material positioned on the first lock main body side, the second lock receiving portion having a second engaged portion that engages with a second engaging portion that constitutes the second lock main body, the first limiting position is a position where the first engaging portion and the first engaged portion engage with each other in the fully closed state, the second limiting position is a position where the second engaging portion and the second engaged portion engage with each other in the fully closed state, the first engaging portion and the second engaged portion engage with each other in the fully closed state, The first lock body is configured so that the first engaged portion is located a first distance inward in the prospective direction from a sight surface located on the outside in the prospective direction of the at least one opening/closing body, the first lock receiving portion is configured so that the first engaged portion is located a second distance inward in the prospective direction from a joining surface located on the outside in the prospective direction of a frame material located on the first lock body side, the second lock body is configured so that the second engaging portion is located the first distance inward in the prospective direction from the sight surface, and the second lock receiving portion is configured so that the second engaged portion is located a third distance inward in the prospective direction from the joining surface, which is a third distance shorter than the second distance.

The opening and closing device of claim 2 is the opening and closing device of claim 1, which is provided with a plurality of the second movement limiting means, and the plurality of second movement limiting means include a one-side second movement limiting means located on one side of the viewing direction outside the first movement limiting means in the fully closed state, and an other-side second movement limiting means located on the other side of the viewing direction outside the first movement limiting means in the fully closed state.

The opening and closing device of claim 3 is the opening and closing device of claim 1 or 2, and is provided with a linkage means for linking the movement restriction of the at least one opening and closing body by the first movement limiting means and the movement restriction of the at least one opening and closing body by the second movement limiting means, and for linking the release of the movement restriction of the at least one opening and closing body by the first movement limiting means and the release of the movement restriction of the at least one opening and closing body by the second movement limiting means.

The opening and closing device described in claim 4 is an opening and closing device described in any one of claims 1 to 3 , wherein the opening and closing device is a single-leaf hinged door, and the second lock body is configured so that the second engaging portion is positioned further in the closing direction than the first restricting position in the fully closed state, and/or the second lock receiving portion is configured so that the second engaged portion is positioned further in the opening direction than the first restricting position in the fully closed state.

According to the opening and closing device described in claim 1, the device is provided with a first movement limiting means for limiting the movement of at least one opening and closing body in a fully closed state, the first movement limiting means being located on the door edge side in the fully closed state, and a second movement limiting means for limiting the movement of at least one opening and closing body in a fully closed state, the second movement limiting means being located outside the first movement limiting means in a front direction perpendicular to the direction from the door edge side to the door trailing side in the fully closed state, and the first movement limiting means and the second movement limiting means are configured so that the movement of at least one opening and closing body can be limited by the first movement limiting means and the second movement limiting means in the fully closed state regardless of whether or not warping occurs in the front direction of the at least one opening and closing body, so that the movement of the opening and closing body can be limited by the first movement limiting means and the second movement limiting means in the fully closed state regardless of whether or not the above-mentioned warping occurs. Therefore, regardless of whether the above-mentioned warping occurs or not, the usability of the first movement limiting means and the second movement limiting means under normal conditions can be maintained, and when a fire occurs in either of the prospective directions, the fire can be prevented from spreading from one of the prospective directions to the other via the opening and closing device in the fully closed state, thereby improving the usability and fire resistance of the opening and closing device.
Furthermore, since the first movement limiting means and the second movement limiting means are configured so that the first limiting position and the second limiting position are different from each other in the prospective direction at least when the warping does not occur, the first movement limiting means and the second movement limiting means are configured so that the first limiting position and the second limiting position are different from each other in the prospective direction, it is possible to set the first limiting position and the second limiting position according to the warping, and when the warping occurs, the movement of the opening and closing body can be effectively limited by the first movement limiting means and the second movement limiting means in the fully closed state.

According to the opening and closing device described in claim 2 , the multiple second movement limiting means include a one-side second movement limiting means that is located on one side of the viewing direction outside the first movement limiting means in the fully closed state, and an other-side second movement limiting means that is located on the other side of the viewing direction outside the first movement limiting means in the fully closed state.Therefore, compared to a case where only one of the one-side second movement limiting means or the other-side second movement limiting means is provided, it is possible to suppress the warping caused by the heat of the fire when the fire occurs in the fully closed state, making it easier to improve the fire resistance of the opening and closing device.

According to the opening and closing device described in claim 3, a linking means is provided for linking the movement restriction of at least one opening and closing body by the first movement limiting means with the movement restriction of at least one opening and closing body by the second movement limiting means, and for linking the release of the movement restriction of at least one opening and closing body by the first movement limiting means with the release of the movement restriction of at least one opening and closing body by the second movement limiting means.Therefore, the operation of the first movement limiting means and the operation of the second movement limiting means can be linked, and the effort required to operate the first movement limiting means and the second movement limiting means can be reduced compared to a case where the operation of the first movement limiting means and the operation of the second movement limiting means cannot be linked.

According to the opening and closing device described in claim 4, the lock body is configured so that, in the fully closed state, the engaging portion is positioned further in the closing direction than the restricting position at which the opening and closing body can be restricted by the first movement limiting means, and/or the lock receiving portion is configured so that, in the fully closed state, the engaged portion is positioned further in the opening direction than the restricting position.Therefore, by simply adopting the simple configuration of the lock body or the simple configuration of the lock receiving portion, the movement of the opening and closing body can be restricted by the first movement limiting means and the second movement limiting means in the fully closed state, regardless of whether the warping occurs or not, and the manufacturability of the second movement limiting means can be improved.

1 is a front view showing an opening and closing device according to an embodiment of the present invention; 2 is a cross-sectional view of the switchgear of FIG. 1 taken along the line AA (partially omitted); 2 is a cross-sectional view of the switchgear of FIG. 1 taken along the line BB (partially omitted); 2A and 2B are cross-sectional views of the switchgear of FIG. 1 (partially omitted), where FIG. 2A is a cross-sectional view taken along line AA, and FIG. 2B is a cross-sectional view taken along line CC. FIG. 6A and 6B are side views of the opening/closing body of FIG. 5 (partially omitted), where FIG. 6A is a right side view and FIG. FIG. 8 is a cross-sectional view of the opening/closing body of FIG. 7 taken along the line D-D. 13 is a diagram showing a state in which a projected side warp occurs in an opening/closing body in an opening/closing device in which the length of the second gap is the same as the length of the first gap; FIG.

Below, with reference to the attached drawings, an embodiment of the opening and closing device according to the present invention will be described in detail. First, [I] the basic concept of the embodiment will be explained, then [II] the specific contents of the embodiment will be explained, and finally, [III] modified examples of each embodiment will be explained. However, the present invention is not limited to the embodiment.

[I] Basic Concept of the Embodiment First, a basic concept of the embodiment will be described. The embodiment generally relates to an opening and closing device including at least one opening and closing body for opening and closing an opening portion of a building.

The term "building" here refers to any specific structure or type, but includes, for example, an office building or a factory facility. An "opening in a building" refers to an opening formed in a part of the building's framework (e.g., a wall, ceiling, or floor) to install a window or entrance. An "opening/closing device" refers to a structure for restricting or limiting the entry/exit or visibility of an opening in a building. The installation position and use of the opening/closing device are arbitrary, but include, for example, a "front door" installed at the front door, a "rear door" installed at a back door or service door, and an "interior door" installed inside a building. The opening/closing structure of the opening/closing device is arbitrary, and can be configured as, for example, a single-wing door, a double-wing door (a so-called parent-child door), a single-wing sliding door, or a double-wing sliding door.

In the following embodiment, the opening and closing device is a single-wing hinged door that is placed in a position facing an evacuation passage of a building such as a building, and is a fire door (specifically, a single-wing heat-insulating door) that can prevent the heat of a fire from being transmitted to the evacuation passage through the opening and closing device if a fire breaks out in a room adjacent to the evacuation passage.

[II] Specific Contents of the Embodiment Next, specific contents of the embodiment will be described.

(composition)
First, a configuration of an opening/closing device to which an opening/closing body according to an embodiment is applied will be described. In the following description, the X direction in Fig. 1 is referred to as the left-right direction of the opening/closing device (-X direction is the left direction of the opening/closing device, and +X direction is the right direction of the opening/closing device), the Y direction in Fig. 2 is referred to as the front-rear direction of the opening/closing device (+Y direction is the front direction of the opening/closing device (toward the outside of the room), and -Y direction is the rear direction of the opening/closing device (toward the inside of the room)), and the Z direction in Fig. 1 is referred to as the up-down direction of the opening/closing device (+Z direction is the up direction of the opening/closing device, and -Z direction is the down direction of the opening/closing device).

As shown in FIG. 1, the opening/closing device 1 generally comprises a frame 10, an opening/closing body 20, and a hinge section 50. However, the configuration of the opening/closing device 1 that is not specifically mentioned is the same as that of the conventional device and will not be described here. The method of mounting (or connecting) the various members constituting the opening/closing device 1 described below is arbitrary, but for example, a method of mounting (or connecting) the mounting member to the mounting counterpart member using a fastener (e.g., rivet, mounting screw, screw, etc.), welding, adhesive, double-sided tape, etc., via a mounting hole (e.g., rivet hole, screw hole, screw hole, etc.) formed in the mounting member or the mounting counterpart member is used.

(Configuration - Frame)
The frame 10 is installed on the periphery of an opening 3 formed in the skeleton 2 (specifically, a wall portion), and as shown in Figures 1 and 7, comprises a pair of left and right vertical frame members 11, 12 and a pair of upper and lower horizontal frame members 13, 14 made of steel (for example, steel or stainless steel). These vertical frame members 11, 12 and horizontal frame members 13, 14 are each fixed to the skeleton 2, and are combined with each other to form a front shape that is approximately rectangular and annular.

In the following, as necessary, of the pair of left and right vertical frame members 11, 12, the vertical frame member 11 located on the tail side of the opening 3 will be referred to as the "tail side vertical frame member 11", and the vertical frame member 12 located on the front side of the opening 3 will be referred to as the "front side vertical frame member 12". In addition, of the pair of upper and lower horizontal frame members 13, 14, the horizontal frame member 13 located on the upper side of the opening 3 will be referred to as the "upper horizontal frame member 13", and the horizontal frame member 14 located on the lower side of the opening 3 will be referred to as the "lower horizontal frame member 14". The details of the configuration of the frame body 10 will be described later.

(Configuration - Opening and closing body)
Returning to Figure 1, the opening/closing body 20 is a flat opening/closing body for opening and closing the opening 3, and as shown in Figures 1 to 3, it comprises an opening/closing body frame 30, an outdoor surface material 40a, an indoor surface material 40b, and a core material (not shown).

Here, the "opening/closing state of the opening/closing body 20" is a concept that includes the "fully closed state," the "fully open state," and the "half-open state." Of these, the "fully closed state" is a state in which the opening 3 is fully closed by the opening/closing body 20, and in the embodiment, the position of the opening/closing body 20 in the fully closed state is referred to as the "fully closed position." Also, the "fully open state" is a state in which the opening 3 is fully opened by the opening/closing body 20, and in the embodiment, the position of the opening/closing body 20 in the fully open state is referred to as the "fully open position." Also, the "half-open state" is a state in which the opening/closing body 20 is located between the fully closed position and the fully open position, and the position of the opening/closing body 20 in the half-open state is referred to as the "half-open position."

(Configuration-Opening/Closing Body-Opening/Closing Body Frame)
The opening/closing body frame 30 is mainly responsible for the rigidity of the opening/closing body 20. The opening/closing body frame 30 is formed so that the front shape is a rectangular ring by combining a plurality of long steel strength bones (support members), and specifically, as shown in Figures 2 and 3, is composed of a pair of left and right vertical strength bones 31, 32 (support members on the projected surface side) and a pair of upper and lower lateral strength bones 33, 34 (support members on the projected surface side). Of these, the pair of left and right vertical strength bones 31, 32 are formed so that the lengths in the longitudinal direction are approximately the same, and are arranged so as to be approximately aligned along the vertical direction. In addition, the pair of upper and lower lateral strength bones 33, 34 are formed so that the lengths in the longitudinal direction are approximately the same, and are arranged so as to be approximately aligned along the horizontal direction.

In the following, as necessary, of the vertical strength bones 31, 32, the vertical strength bone 31 on the trailing edge side will be referred to as the "trailing edge side vertical strength bone 31," and the vertical strength bone 32 on the leading edge side will be referred to as the "leading edge side vertical strength bone 32." In addition, of the lateral strength bones 33, 34, the upper lateral strength bone 33 will be referred to as the "upper lateral strength bone 33," and the lower lateral strength bone 34 will be referred to as the "lower lateral strength bone 34."

As shown in FIG. 2, a plurality of intermediate vertical force bones 35 are arranged in parallel in the left-right direction at intervals between the trailing-side vertical force bone 31 and the leading-side vertical force bone 32. The intermediate vertical force bones 35 reinforce the opening/closing body frame 30. The intermediate vertical force bones 35 are made of long steel force bones, and are formed so that their longitudinal (vertical) length is approximately the same as that of the trailing-side vertical force bone 31 (or leading-side vertical force bone 32). The intermediate vertical force bones 35 are arranged so as to extend approximately along the vertical direction, and are fixed to the upper lateral force bone 33 or the lower lateral force bone 34 by means of fixtures, welding, or the like.

(Configuration-Opening/Closing Body-Opening/Closing Body Frame-Other Configuration 1)
In addition, the specific configurations of the trailing edge vertical force bone 31, the leading edge vertical force bone 32, the upper horizontal force bone 33, and the intermediate vertical force bone 35 are arbitrary, but in the embodiment, they are formed so that the cross-sectional shape of a cross section perpendicular to the longitudinal direction thereof is U-shaped.

Specifically, as shown in Figs. 2 and 3, the central piece 36a, the exterior piece 36b located on the exterior side of the room relative to the central piece 36a, and the interior piece 36c located on the interior side of the room relative to the central piece 36a are each provided. The upper end and its adjacent portion of the central piece 36a of the trailing edge vertical force bone 31 are formed so as to protrude upward from the exterior piece 36b and the interior piece 36c, and are formed so as to be able to fit into the upper horizontal force bone 33 (note that the same applies to the leading edge vertical force bone 32). However, this is not limited to this, and for example, the central piece 36a of the trailing edge vertical force bone 31 and the upper horizontal force bone 33 may simply be provided to butt against each other. The lower end and its adjacent portion of the central piece 36a of the trailing edge vertical force bone 31 are formed so as to protrude downward from the exterior piece 36b and the interior piece 36c, and are formed so as to be able to fit into the lower horizontal force bone 34 (note that the same applies to the leading edge vertical force bone 32). However, this is not limited to the above, and for example, the center piece 36a of the trailing edge vertical bone 31 and the lower horizontal bone 34 may simply be butted together.

(Configuration-Opening/Closing Body-Opening/Closing Body Frame-Other Configurations 2)
In addition, the specific configuration of the lower lateral force bone 34 (projected surface side support member) is arbitrary, but in the embodiment, as shown in Figure 3, at least a portion of the lower lateral force bone 34 is formed in a concave shape capable of accommodating a portion of the blocking portion 22 described later, and specifically, it has an exterior lower lateral force bone 34a and an interior lower lateral force bone 34b.

The exterior lower lateral force bone 34a is a first projected surface side support member that constitutes part of the basic structure of the lower lateral force bone 34. This exterior lower lateral force bone 34a is a plate-shaped body with a cross-sectional shape along the Y-Z plane formed in an approximately Z-shape. Specifically, as shown in FIG. 3, it is configured with a first lower lateral force bone piece 34c located on the upper side, a second lower lateral force bone piece 34d located on the lower side, and a third lower lateral force bone piece 34e that connects the first lower lateral force bone piece 34c and the second lower lateral force bone piece 34d (note that the configuration of the interior lower lateral force bone 34b is approximately the same). In addition, this exterior lower lateral force bone 34a is provided on one side of the projected direction (the outdoor side of the room in FIG. 3).

The indoor lower lateral force bone 34b is a second projected surface side support member that constitutes another part of the basic structure of the lower lateral force bone 34. The indoor lower lateral force bone 34b is a plate-like body with a cross-sectional shape along the Y-Z plane formed in an approximately Z-shape, similar to the outdoor lower lateral force bone 34a. Specifically, as shown in Figure 3, the length of the indoor lower lateral force bone 34b in the front-to-rear direction is shorter than the length of the outdoor lower lateral force bone 34a in the front-to-rear direction. The indoor lower lateral force bone 34b is also provided at a distance from the outdoor lower lateral force bone 34a on the other side of the projected direction (the indoor side of the room in Figure 3). Specifically, when viewed from the front, a portion of the exterior lower lateral force bone 34a (in FIG. 3, the first lower lateral force bone piece 34c of the exterior lower lateral force bone 34a) and a portion of the interior lower lateral force bone 34b (in FIG. 3, the first lower lateral force bone piece 34c of the interior lower lateral force bone 34b) are arranged to overlap, and these portions are connected to each other by fasteners.

This configuration allows a portion of the blocking portion 22 (described later) to be stored in the concave portion 34g of the lower lateral force bone 34 (in FIG. 3, the portion surrounded by the exterior lower lateral force bone 34a and the interior lower lateral force bone 34b), preventing the blocking portion 22 (described later) from being exposed to the outside.

(Configuration - Opening and closing body - Outdoor surface material, indoor surface material)
The exterior surface material 40a is a first surface material that covers one of the two visible surfaces or at least one or more visible surfaces of the surface of the opening/closing body 20, and in the embodiment, as shown in Figures 2 and 3, is configured to cover the entire surface of the opening/closing body 20 that faces the outside of the room (hereinafter referred to as the "outdoor visible surface") and the outside parts of the door trailing edge, door leading edge, upper surface, and lower surface. The interior surface material 40b is a second surface material that covers the other of the two visible surfaces or at least one or more visible surfaces of the surface of the opening/closing body 20, and in the embodiment, as shown in Figures 2 and 3, is configured to cover the entire surface of the opening/closing body 20 that faces the inside of the room (hereinafter referred to as the "indoor visible surface") and the inside parts of the door trailing edge, door leading edge, upper surface, and lower surface. These exterior surface material 40a and interior surface material 40b are formed, for example, from a thin plate-shaped steel material (specifically, steel material or stainless steel material) and are arranged to cover the opening/closing body frame 30 from the exterior and interior sides of the room, and are fixed to the opening/closing body frame 30.

As shown in Figures 2 and 3, the exterior surface material 40a is formed with a door end joint portion 41 and an upper joint portion 42.

When in the fully closed state, the door-end side joining section 41 covers a part of the surface of the vertical frame member main body 11a of the door-end side vertical frame member 12 facing the room (hereinafter referred to as the "door-end side joining surface 12a"). As shown in Figure 2, it protrudes outward in the left-right direction from the door-end side part of the outdoor surface member 40a and is arranged to face the door-end side joining surface 12a.

The upper meeting portion 42, in the fully closed state, covers a part of the surface of the upper horizontal frame member main body 13a of the upper horizontal frame member 13 facing the room (hereinafter referred to as the "upper meeting surface 13g"). As shown in FIG. 3, it protrudes upward from the upper part of the outdoor surface material 40a and faces the upper meeting surface 13g.

(Configuration-opening/closing body-core material)
The core material is filled inside the opening/closing body 20. This core material is made of, for example, a known core material (as an example, a core material having a relatively low thermal conductivity) and is filled in the space surrounded by the opening/closing body frame 30, the outdoor surface material 40a, and the indoor surface material 40b (however, excluding the portions of the space where various heat shielding parts described later are installed).

(Configuration-Opening and closing body-Other configurations)
As shown in FIGS. 1, 3, 5 and 6, the opening/closing body 20 is provided with a blocking portion 22. As shown in FIG.

(Configuration-Opening and closing body-Other configurations-Blocking part)
The blocking portion 22 is a blocking means for blocking a gap PG (hereinafter referred to as "projected surface side gap PG") between the lower lateral force bone 34 and the frame body 10 provided on the periphery of the opening 3 in the fully closed state. This blocking portion 22 is configured using, for example, a known tight device for an opening/closing device, and is attached to the lower lateral force bone 34 as shown in Fig. 3, and includes a blocking side airtight portion 22a, a blocking side operating portion 22b, and a blocking side interlocking portion 22c.

Of these, the closed side airtight portion 22a is constructed, for example, using a known long airtight material (such as airtight rubber, for example) (the same applies to the other airtight portions), and as shown in FIG. 3, is provided over substantially the entire length of the lower lateral force bone 34 in the left-right direction, and is connected to the lower end of the closed side interlocking portion 22c by a fastener or the like.

The blocking side operating part 22b is for moving and operating the blocking side airtight part 22a and the blocking side interlocking part 22c. This blocking side operating part 22b is configured, for example, using a known operating member (one example is a pressing type operating member), and as shown in FIG. 3, the blocking side operating part 22b can be inserted and removed through a blocking side opening 45 formed in the outdoor surface material 40a or the indoor surface material 40b, and is arranged so that it is pressed by the outdoor vertical frame material 11 on the door end side of the opening/closing body 20 in the fully closed state.

The blocking side interlocking part 22c is for vertically moving the blocking side airtight part 22a and a part of the blocking side interlocking part 22c in response to the operation of the blocking side operating part 22b. This blocking side interlocking part 22c is constructed using a known interlocking member, and as shown in FIG. 3, is provided over substantially the entire length in the left-right direction within the concave part 34g of the lower lateral force bone 34, and is fixed to the lower lateral force bone 34 (the exterior lower lateral force bone 34a and the interior lower lateral force bone 34b) by a fixing device or the like.

When the blocking side operating part 22b is pressed by the trailing edge vertical frame material 11 in the fully closed state, as shown in FIG. 3, the blocking side airtight part 22a and a part of the blocking side interlocking part 22c move downward, making it possible for the blocking side airtight part 22a to block the projected side gap PG. Also, when the blocking side operating part 22b is no longer pressed by the trailing edge vertical frame material 11 in the non-fully closed state, as shown in FIG. 6, the blocking side airtight part 22a and a part of the blocking side interlocking part 22c move upward, so that the blocking side airtight part 22a no longer blocks the projected side gap PG, and therefore the blocking part 22 does not hinder the opening and closing movement of the opening and closing body 20.

(Configuration: Hinge section)
Returning to Fig. 1, the hinge section 50 is for axially supporting the opening/closing body 20 so as to be freely rotatable with respect to the trailing edge vertical frame member 11. This hinge section 50 is constructed using a known flag hinge or the like, and as shown in Fig. 1, a plurality of hinge sections 50 are arranged in parallel at intervals from each other along the vertical direction at the trailing edge end (the right edge in Fig. 1) of the opening/closing body 20, and are attached to the opening/closing body 20 and the trailing edge vertical frame member 11 by fasteners or the like.

(Configuration - Details of the configuration of the end-of-door vertical frame material and the front-of-door vertical frame material)
Next, the configuration of the trailing edge side vertical frame member 11 and the leading edge side vertical frame member 12 of the frame body 10 will be described in detail. However, the trailing edge side vertical frame member 11 and the leading edge side vertical frame member 12 can be manufactured in any shape, method, and material unless otherwise specified. In the embodiment, as shown in Figure 2, each of the trailing edge side vertical frame member 11 and the leading edge side vertical frame member 12 includes a vertical frame member main body 11a, a vertical side fixing member 11b, and a vertical side airtight portion 11c.

(Configuration - Details of the configuration of the end-of-door vertical frame material and the front-of-door vertical frame material - Vertical frame material body)
The vertical frame body 11a is the basic structure of the trailing-end vertical frame member 11 (or leading-end vertical frame member 12). The vertical frame body 11a is a hollow body formed so that its cross-sectional shape along the XY plane is roughly U-shaped and open outward in the left-right direction, and is formed over roughly the entire length of the opening 3 in the up-down direction.

As shown in FIG. 2, the vertical frame body 11a is provided with a vertical recess 11d, a vertical airtight recess 11e, and a vertical filler 11f.

Of these, the vertical recess 11d is intended to accommodate the opening/closing body 20 while avoiding interference between the vertical frame body 11a and the opening/closing body 20 (a recess with a so-called interlocking structure), and is formed by recessing the portion of the vertical frame body 11a that corresponds to the opening/closing body 20 outward in the left-right direction.

In addition, the vertical side airtight recess 11e is intended to accommodate a portion of the vertical side airtight portion 11c, and is formed by recessing the portion of the vertical side recess 11d facing the interior side of the room (the rear portion in FIG. 2).

The vertical side filler 11f is filled inside the vertical frame body 11a to reinforce the vertical frame body 11a. This vertical side filler 11f is made of a known filler (mortar, for example) that has heat insulation properties (note that the same applies to other filler materials), and as shown in Figure 2, it fills almost the entire inside of the vertical frame body 11a.

(Details of the structure of the vertical frame material on the end of the door and the vertical frame material on the front side of the door - Vertical fixing material)
The vertical fixing member 11b is for fixing the vertical frame body 11a to the framework 2 and reinforcing the vertical frame body 11a. The vertical fixing member 11b is formed of a plate-like body, and specifically, as shown in Fig. 2, the length of the vertical fixing member 11b in the front-rear direction is substantially the same as (or longer than) the length of the open end of the U-shaped vertical frame body 11a, and the length of the vertical fixing member 11b in the up-down direction is shorter than the length of the vertical frame body 11a in the up-down direction. The vertical fixing members 11b are arranged in parallel at a predetermined interval along the up-down direction on the open end side of the U-shaped vertical frame body 11a (on the outer end side of the vertical frame body 11a in Fig. 2), and are fixed to the vertical frame body 11a by welding or the like.

(Configuration - Details of the configuration of the end-of-door vertical frame material and the front-of-door vertical frame material - Vertical airtight section)
The vertical airtight portion 11c is an airtight means for increasing the airtightness between the trailing edge vertical frame member 11 or the leading edge vertical frame member 12 and the opening/closing body 20. As shown in Fig. 2, the vertical airtight portion 11c is embedded in the vertical airtight recess 11e over substantially the entire length of the vertical frame member main body 11a in the up-down direction.

(Details of the structure of the upper horizontal frame material)
Next, the configuration of the upper horizontal frame member 13 of the frame body 10 will be described in detail. However, the upper horizontal frame member 13 can be manufactured in any shape, method, and material unless otherwise specified. In the embodiment, as shown in Figure 3, the upper horizontal frame member 13 includes an upper horizontal frame member main body 13a, an upper fixing member 13b, and an upper airtight portion 13c.

(Configuration - Details of the configuration of the upper horizontal frame material - Upper horizontal frame material body)
The upper horizontal frame member main body 13a is the basic structure of the upper horizontal frame member 13. This upper horizontal frame member main body 13a is a hollow body formed so that its cross-sectional shape along the YZ plane is approximately U-shaped and open toward the outside in the vertical direction (upward in FIG. 3), and is formed over approximately the entire length of the opening 3 in the left-right direction.

As shown in FIG. 3, the upper horizontal frame body 13a is provided with an upper recess 13d, an upper airtight recess 13e, and an upper filling material 13f.

Of these, the upper recess 13d is intended to accommodate the opening/closing body 20 while avoiding interference between the upper horizontal frame member 13 and the opening/closing body 20 (a recess having a so-called interlocking structure), and is formed by recessing the portion of the upper horizontal frame member main body 13a that corresponds to the opening/closing body 20 toward the outside in the vertical direction (upward in FIG. 3).

The upper airtight recess 13e is for accommodating a part of the upper airtight portion 13c, and is formed by recessing the part of the upper recess 13d facing the interior of the room (the rear part in FIG. 3) toward the interior of the room.

In addition, the upper filling material 13f is filled inside the upper horizontal frame body 13a to reinforce the upper horizontal frame body 13a, and as shown in Figure 3, it fills almost the entire inside of the upper horizontal frame body 13a.

(Configuration - Details of the configuration of the upper horizontal frame material - Upper fixing material)
The upper fixing member 13b is for fixing the upper horizontal frame member main body 13a to the framework 2 and reinforcing the upper horizontal frame member main body 13a. The upper fixing member 13b is formed of a plate-like body, and specifically, as shown in Fig. 3, the length of the upper fixing member 13b in the front-rear direction is substantially the same as (or longer than) the length of the open end of the U-shaped upper horizontal frame member main body 13a in the front-rear direction, and the length of the upper fixing member 13b in the left-right direction is shorter than the length of the upper horizontal frame member main body 13a in the left-right direction. The upper fixing members 13b are arranged in parallel in the left-right direction at a predetermined interval on the open end side of the U-shaped upper horizontal frame member main body 13a (the outer end side in the vertical direction of the upper horizontal frame member main body 13a in Fig. 3), and are fixed to the upper horizontal frame member main body 13a by welding or the like.

(Configuration - Details of the configuration of the upper horizontal frame material - Upper airtight section)
The upper airtight portion 13c is an airtight means for increasing the airtightness between the upper horizontal frame member 13 and the opening/closing body 20, and as shown in Figure 3, is embedded in the upper airtight recess 13e over approximately the entire length of the upper horizontal frame member main body 13a in the left-right direction.

(Structure - Details of the frame structure - Lower horizontal frame material)
Next, the configuration of the lower horizontal frame member 14 of the frame body 10 will be described in detail. However, the lower horizontal frame member 14 can be manufactured in any shape, method, and material unless otherwise specified. In the embodiment, as shown in Figure 3, the lower horizontal frame member 14 is embedded in the floor of the room, and as shown in Figures 3 and 8, it includes a lower horizontal frame member main body 14a and a lower fixing member 14b.

(Configuration - Details of the frame configuration - Lower horizontal frame material - Lower horizontal frame material main body)
The lower horizontal frame member body 14a is the basic structure of the lower horizontal frame member 14. The lower horizontal frame member body 14a is a hollow body formed so that the cross-sectional shape along the Y-Z plane is approximately U-shaped and open toward the outside in the vertical direction (to the lower side in FIG. 3), and is formed over approximately the entire length in the left-right direction of the opening 3 (however, as shown in FIG. 3, the length in the front-to-rear direction of the lower horizontal frame member body 14a is set shorter (or approximately the same) than the length in the front-to-rear direction of the upper horizontal frame member 13). Also, as shown in FIG. 3, the lower horizontal frame member body 14a is provided so that the upper end portion and the adjacent portion thereof protrude above the floor surface 4.

As shown in FIG. 3, the lower horizontal frame body 14a is provided with a lower filler 14c. This lower filler 14c is filled inside the lower horizontal frame body 14a to reinforce the lower horizontal frame body 14a, and fills almost the entire inside of the lower horizontal frame body 14a.

(Structure - Details of the structure of the frame - Lower horizontal frame material - Lower fixing material)
The lower fixing members 14b are intended to fix the lower horizontal frame member main body 14a to the framework 2 and reinforce the lower horizontal frame member main body 14a. The lower fixing members 14b are configured in substantially the same manner as the upper fixing members 13b, and are arranged in parallel at a predetermined interval along the left-right direction on the open end side of the U-shaped lower horizontal frame member main body 14a, and are fixed to the lower horizontal frame member main body 14a by welding or the like, as shown in Fig. 8.

(Configuration - Movement restriction structure)
Returning to Fig. 4, next, a description will be given of a movement limiting structure of the opening/closing device 1. This opening/closing device 1 is provided with a movement limiting structure for limiting the movement of the opening/closing body 20 in a fully closed state. The features of this movement limiting structure in this embodiment are as follows.

(Configuration - Movement restriction structure - First feature)
First, regarding a first feature of the movement limiting structure, as shown in Figs. 4, 6 and 8, the opening and closing device 1 is provided with a first movement limiting portion 60 and a second movement limiting portion 70.

(Configuration - Movement limiting structure - First feature - First movement limiting portion)
The first movement limiting part 60 is a first movement limiting means for limiting the movement of the opening/closing body 20 in the fully closed state. This first movement limiting part 60 is configured using, for example, a known locking device (one example is a latch lock), and is provided so as to be located on the door end side in the fully closed state as shown in Fig. 4(a) and includes a first lock main body 61 and a first lock receiving part 62.

(Configuration - Movement restriction structure - First feature - First movement restriction part - First lock body)
The first lock body 61 is for performing the movement restriction operation of the first movement restriction part 60. As shown in Fig. 4(a) and Fig. 6(b), this first lock body 61 is provided in the opening/closing body 20 (specifically, in the approximate center part in the up-down direction of the opening/closing body 20), and includes a first body-side storage part 61a, a first exterior operation part 61b, a first interior operation part 61c, and a first engagement part 61d.

Of these, the first main body side storage section 61a is a storage means for storing various parts of the first movement limiting section 60 such as the first engagement section 61d, and is formed, for example, from a hollow steel body. It is provided on the door end side inside the opening/closing body 20 and is fixed to the opening/closing body 20 by a fixing device or the like.

The first outdoor operation unit 61b is an operation unit for operating the first movement restriction unit 60 from the outdoor side of the room, and is arranged so that when a part of the first outdoor operation unit 61b is inserted into the first main body side storage unit 61a, the first outdoor operation unit 61b protrudes toward the outdoor side of the room.

The first indoor operation unit 61c is an operation unit for operating the first movement restriction unit 60 from the indoor side of the room, and is arranged so that when a portion of the first indoor operation unit 61c is inserted into the first main body side storage unit 61a, the first indoor operation unit 61c protrudes toward the indoor side of the room.

The first engaging portion 61d is for engaging with the first engaged portion 62b of the first lock receiving portion 62 described below, and is accommodated inside the first main body side accommodating portion 61a so as to be freely inserted and removed (specifically, freely inserted and removed in the horizontal direction) through the first main body side insertion opening 61e provided in the first main body side accommodating portion 61a.

(Configuration - Movement restriction structure - First feature - First movement restriction portion - First lock receiving portion)
The first lock receiving portion 62 is for restricting or releasing the movement restriction of the opening/closing body 20 in response to a movement restriction operation performed by the first lock main body 61. As shown in Fig. 4(a) and Fig. 8, the first lock receiving portion 62 is provided on the door end side vertical frame member 12 (specifically, approximately the center part in the up-down direction of the door end side vertical frame member 12), and includes a first receiving side accommodating portion 62a and a first engaged portion 62b.

Of these, the first receiving side storage section 62a is a storage means capable of storing the first engaging section 61d and the first engaged section 62b, and is formed, for example, from a hollow steel body with an open side on the first lock body 61 side, and is fixed to the door end vertical frame material 12 by a fastener or the like.

The first engaged portion 62b is engaged by the first engaging portion 61d, and is provided at a position (in FIG. 4(a) at the end of the first receiving side storage portion 62a on the outside of the room) where it can be engaged by the first engaging portion 61d inserted through the first receiving side insertion port 62c provided in the first engaged portion 62b inside the receiving side storage portion. In the embodiment, the position where the first engaging portion 61d and the first engaged portion 62b abut (engage) in the fully closed state is described as the first limiting position LP1 (limiting position) where the movement of the opening/closing body 20 can be limited by the first movement limiting portion 60.

(Configuration - Movement limiting structure - First feature - Second movement limiting section)
The second movement limiting part 70 is a second movement limiting means for limiting the movement of the opening/closing body 20 in the fully closed state. The second movement limiting part 70 is configured, for example, using a known locking device (one example is a reverse latch lock), and is provided so as to be located outside the first movement limiting part 60 in the sight direction (the up-down direction in FIG. 6B; hereinafter referred to as the "orthogonal sight direction") perpendicular to the direction from the door end side to the door tail side in the fully closed state, as shown in FIG. 4B. The second movement limiting part 70 includes a second lock body 71 and a second lock receiving part 72.

(Configuration - Movement restriction structure - First feature - Second movement restriction part - Second lock body)
The second lock body 71 is a lock body for performing a movement restriction operation of the second movement restriction portion 70. As shown in Fig. 4(b) and Fig. 6(b), the second lock body 71 is provided in the opening/closing body 20 (specifically, in a portion above or below the first lock body 61 in the opening/closing body 20), and includes a second body-side storage portion 71a and a second engagement portion 71b.

Of these, the second main body side storage section 71a is a storage means for storing the second engagement section 71b, and is formed, for example, from a hollow steel body. It is provided on the door end side inside the opening/closing body 20 and is fixed to the opening/closing body 20 by a fixing device or the like.

The second engaging portion 71b is for engaging with the second engaged portion 72b of the second lock receiving portion 72, which will be described later. This second engaging portion 71b is configured to be approximately the same size as the first engaging portion 61d, and is accommodated inside the second main body side accommodating portion 71a so as to be freely inserted and removed (specifically, freely inserted and removed by rotating around the Z axis) through the second main body side insertion port 71c provided in the second main body side accommodating portion 71a.

(Configuration - Movement restriction structure - First feature - Second movement restriction portion - Second lock receiving portion)
The second lock receiving portion 72 is a lock receiving portion for restricting the movement of the opening/closing body 20 or for releasing the restriction of the movement in response to the movement restriction operation performed by the second lock main body 71. As shown in Fig. 4(b) and Fig. 8, the second lock receiving portion 72 is provided on the door end side vertical frame member 12 (specifically, on the door end side vertical frame member 12, above or below the first lock receiving portion 62), and includes a second receiving side accommodating portion 72a and a second engaged portion 72b.

Of these, the second receiving side storage section 72a is a storage means capable of storing the second engaging section 71b and the second engaged section 72b. This second receiving side storage section 72a is formed, for example, from a hollow steel body with an open side on the second lock body 71 side (specifically, it is configured to be approximately the same size as the first receiving side storage section 62a), and is fixed to the door end vertical frame material 12 by a fastener or the like.

The second engaged portion 72b is engaged by the second engaging portion 71b. The second engaged portion 72b is configured to be approximately the same size as the first engaged portion 62b, and is provided at a position inside the second receiving side accommodating portion 72a where it can be engaged by the second engaging portion 71b inserted through the second receiving side insertion port 72c provided in the second receiving side accommodating portion 72a (in FIG. 4B, the end of the second receiving side accommodating portion 72a on the outside of the room). In the embodiment, the position where the second engaging portion 71b and the second engaged portion 72b abut (engage) in the fully closed state is described as the second limiting position LP2 where the movement of the opening/closing body 20 can be limited by the second movement limiting portion 70.

(Configuration-Movement limiting structure-First feature-Second movement limiting section-Other configurations)
Furthermore, the specific configurations of the first movement limiting section 60 and the second movement limiting section 70 are arbitrary, but in the embodiment, the opening/closing body 20 is configured so that the first movement limiting section 60 and the second movement limiting section 70 can limit the movement of the opening/closing body 20 in the fully closed state, regardless of whether or not there is warping in the prospective direction of the opening/closing body 20 (hereinafter referred to as "prospective side warping").

Here, in the embodiment, "prospective side warping" means that, due to an external factor, the end of the opening/closing body 20 on the orthogonal prospective direction side (in FIG. 1, the upper end or lower end of the opening/closing body 20) warps so that it protrudes further outward in the prospective direction (specifically, the outdoor side of the room (i.e., the opening direction side of the opening/closing body 20)) than the center of the orthogonal prospective direction side of the opening/closing body 20. In addition, "external factors" include, for example, the difference in the amount of sunlight exposure between the outdoor side and indoor side of the opening/closing body 20, the difference in temperature between the outdoor side and indoor side of the room, etc.

Specifically, the first limiting position LP1 and the second limiting position LP2 are configured to be different from each other in the projection direction (in FIG. 4, the second limiting position LP2 is positioned closer to the opening direction than the first limiting position LP1) at least when no projection side warping has occurred.

More specifically, as shown in FIG. 6(b), the first lock body 61 is arranged (configured) so that the first engaging portion 61d is positioned a first distance D1 inward in the front-to-rear direction from the exterior facing surface of the opening/closing body 20 (for example, so that the first engaging portion 61d is in approximately the same position as the first engaged portion 62b in the forward-to-rear direction). Also, as shown in FIG. 8, the first lock receiving portion 62 is arranged (configured) so that the first engaged portion 62b is positioned a second distance D2 from the door end mating surface 12a toward the interior side of the room.

As for the second movement limiting portion 70, as shown in FIG. 6(b), the second lock body 71 is arranged (configured) so that the second engaging portion 71b is located a first distance D1 away from the exterior facing surface of the opening/closing body 20 toward the inside in the front-rear direction (i.e., the second engaging portion 71b is located at approximately the same position as the first engaging portion 61d in the prospective direction). As shown in FIG. 8, the second lock receiving portion 72 is configured so that the second engaged portion 72b is located a third distance D3 (a distance shorter than the second distance D2) away from the door end side mating surface 12a toward the interior side of the room (i.e., the second engaged portion 72b is located on the opening side of the first limiting position LP1 in the fully closed state). In detail, the second receiving side storage portion 72a is arranged to be located on the opening side of the first receiving side storage portion 62a, and the second receiving side insertion opening 72c is arranged to be located on the opening side of the first receiving side insertion opening 62c.

In this case, as shown in Fig. 4, in the fully closed state, the gap G2 between the second engaging portion 71b and the second engaged portion 72b (hereinafter referred to as the "second gap G2") is set to be longer than the gap G1 between the first engaging portion 61d and the first engaged portion 62b (hereinafter referred to as the "first gap G1"). This makes it possible to prevent the second engaging portion 71b from being able to be inserted through the second receiving side insertion opening 72c, as occurs in a state in which the length of the second gap G2 shown in Fig. 9 is the same as the length of the first gap G1 and the expected side warping occurs, thereby preventing the second movement limiting portion 70 from being unable to limit the movement of the opening/closing body 20 in the fully closed state. In other words, even if warping of the projected side occurs (as long as the amount of warping of the projected side is within the difference between the second gap G2 and the first gap G1), the second engagement portion 71b can be inserted through the second receiving side insertion opening 72c, making it possible to restrict the movement of the opening/closing body 20 by the first movement restriction portion 60 and the second movement restriction portion 70.

The lengths of the second distance D2 and third distance D3 described above are desirably set so that the length of the portion 12b of the end-of-door vertical frame member 12 that abuts against the second engagement portion 71b when the second movement limiting portion 70 is operated to limit its movement (in FIG. 4, this is the portion from the end-of-door joint surface 12a of the end-of-door vertical frame member 12 to the second engagement portion 71b. Hereinafter, this will be referred to as the "abutment portion 12b") is a length that allows the second engagement portion 71b to be rotated appropriately.

Due to the first feature as described above, regardless of whether or not the expected side warp occurs, the movement of the opening/closing body 20 can be restricted by the first movement limiting unit 60 and the second movement limiting unit 70 in the fully closed state. Therefore, regardless of whether or not the expected side warp occurs, when a fire occurs on either the indoor side or the outdoor side of the room, the fire can be prevented from spreading from one side of the expected direction to the other side through the opening/closing device 1 in the fully closed state while maintaining the usability of the first movement limiting unit 60 and the second movement limiting unit 70 in normal times, and the usability and fire resistance of the opening/closing device 1 can be improved. In addition, since the first movement limiting unit 60 and the second movement limiting unit 70 are configured so that the first limiting position LP1 and the second limiting position LP2 are different from each other in the expected direction, the first limiting position LP1 and the second limiting position LP2 can be set according to the expected side warp, and when the expected side warp occurs, the movement of the opening/closing body 20 can be effectively restricted by the first movement limiting unit 60 and the second movement limiting unit 70 in the fully closed state. Furthermore, simply by configuring the second lock receiving portion 72 so that the second engaged portion 72b is positioned further toward the opening direction than the first limiting position LP1 in the fully closed state, the movement of the opening/closing body 20 can be restricted by the first movement restricting portion 60 and the second movement restricting portion 70 in the fully closed state regardless of whether or not there is warping on the projected side, thereby improving the manufacturability of the second movement restricting portion 70.

(Configuration - Movement restriction structure - Second feature)
Next, regarding the second feature of the movement limiting structure, as shown in Figures 6 (b) and 8, the opening and closing device 1 is provided with a plurality of second movement limiting sections 70 (specifically, two are provided), and these plurality of second movement limiting sections 70 include a one-side second movement limiting section 70a and an other-side second movement limiting section 70b.

(Configuration - Movement limiting structure - Second feature - One-side second movement limiting portion)
The one-side second movement limiting portion 70a is a one-side second movement limiting means that is located on one side of the first movement limiting portion 60 in the orthogonal facing direction in the fully closed state. Only one one-side second movement limiting portion 70a is provided on one side of the first movement limiting portion 60 in the fully closed state, and specifically, as shown in Fig. 6(b) and Fig. 8, it is provided in a position near the upper end of the door-end side portion of the opening/closing body 20.

(Configuration - Movement limiting structure - Second feature - Other-side second movement limiting portion)
The other-side second movement limiting portion 70b is an other-side second movement limiting means that is located on the other outer side in the orthogonal facing direction than the first movement limiting portion 60 in the fully closed state. Only one other-side second movement limiting portion 70b is provided on the other outer side in the orthogonal facing direction than the first movement limiting portion 60 in the fully closed state, and specifically, as shown in Figs. 6(b) and 8, it is provided in a position near the lower end of the door-end side portion of the opening/closing body 20.

This second feature makes it possible to suppress the occurrence of warping of the projected side due to the heat of a fire when the fire occurs in the fully closed state, compared to when only one of the second movement limiting portion 70a on one side or the second movement limiting portion 70b on the other side is provided, making it easier to improve the fire resistance of the opening and closing device 1.

(Configuration - Movement restriction structure - Third feature)
Next, as a third feature of the movement restriction structure, the opening and closing device 1 is provided with a first interlocking portion and a second interlocking portion (both of which are not shown).

(Configuration - Movement restriction structure - Third feature - First interlocking part)
The first interlocking unit is an interlocking means for interlocking the movement restriction of the opening/closing body 20 by the first movement limiting unit 60 with the movement restriction of the opening/closing body 20 by the one-side second movement limiting unit 70a, and for interlocking the release of the movement restriction of the opening/closing body 20 by the first movement limiting unit 60 with the release of the movement restriction of the opening/closing body 20 by the one-side second movement limiting unit 70a. This first interlocking unit is configured, for example, using a known interlocking member (as an example, an interlocking member for a locking device), and is connected to the first outdoor side operation unit 61b, the first indoor side operation unit 61c, and the second engagement unit 71b of the one-side second movement limiting unit 70a by a fixing device or the like so that each of the first outdoor side operation unit 61b and the first indoor side operation unit 61c and the second engagement unit 71b of the one-side second movement limiting unit 70a are interlocked inside the opening/closing body 20.

(Configuration - Movement restriction structure - Third feature - Second interlocking part)
The second interlocking unit is an interlocking means for interlocking the movement restriction of the opening/closing body 20 by the first movement limiting unit 60 with the movement restriction of the opening/closing body 20 by the other-side second movement limiting unit 70b, and for interlocking the release of the movement restriction of the opening/closing body 20 by the first movement limiting unit 60 with the release of the movement restriction of the opening/closing body 20 by the other-side second movement limiting unit 70b. This second interlocking unit is configured, for example, using a known interlocking member (as an example, an interlocking member for a locking device), and is connected to the first outdoor side operation unit 61b, the first indoor side operation unit 61c, and the second engagement unit 71b by a fixing device or the like so that each of the first outdoor side operation unit 61b and the first indoor side operation unit 61c and the second engagement unit 71b of the other-side second movement limiting unit 70b are interlocked inside the opening/closing body 20.

This third feature allows the operation of the first movement limiting unit 60 and the operation of the second movement limiting unit 70 (specifically, the second movement limiting unit 70a on one side and the second movement limiting unit 70b on the other side) to be linked, reducing the effort required to operate the first movement limiting unit 60 and the second movement limiting unit 70 compared to a case in which the operation of the first movement limiting unit 60 and the operation of the second movement limiting unit 70 cannot be linked.

(Configuration - Heat-insulating structure)
Returning to Fig. 3, the heat insulating structure of the opening/closing body 20 will now be described. This opening/closing body 20 has a heat insulating structure for suppressing the heat of the fire from being conducted from one side of the projection direction to the other side via the opening/closing body 20 when the fire occurs in the fully closed state. This heat insulating structure also has a door trailing side heat insulating structure, a door leading side heat insulating structure, a middle side heat insulating structure, an upper side heat insulating structure, and a lower side heat insulating structure. Below, these heat insulating structures will be described in order.

(Configuration - Heat insulation structure - Heat insulation structure on the end of the door, heat insulation structure on the front side, heat insulation structure on the upper side)
First, the heat insulating structure on the trailing edge, the heat insulating structure on the leading edge, and the heat insulating structure on the upper side will be described. Since the heat insulating structure on the trailing edge, the heat insulating structure on the leading edge, and the heat insulating structure on the upper side are substantially the same, only the structure of the upper side heat insulating structure will be described below. The features of the upper side heat insulating structure in this embodiment are as follows.

First, as shown in FIG. 3, the upper heat shielding structure includes a first projecting surface heat shielding section 81, a first exterior heat shielding section 82, a first interior heat shielding section 83, and a first external heat-expansion fire-resistant member 84. However, the first external heat-expansion fire-resistant member 84 is not provided in the heat shielding structure on the tail side and the heat shielding structure on the tip side.

(Configuration-Heat insulation structure-Heat insulation structure on the door tail side, heat insulation structure on the door tip side, upper heat insulation structure-first projected surface side heat insulation part)
The first projected surface heat shielding portion 81 is a heat shielding means for suppressing heat conduction between the projected surface portion 43 (upper surface portion in FIG. 3) of each of the outdoor surface material 40a and the indoor surface material 40b and the central piece 36a of the upper horizontal force bone 33. This first projected surface heat shielding portion 81 is made of, for example, a known heat shielding material (for example, a heat-expanding fire-resistant material (e.g., FiBlock (registered trademark) or the like) that foams when heated at a predetermined temperature (specifically, a temperature of 150°C to 250°C), and is provided between the projected surface portion 43 (hereinafter referred to as the "projected surface portion 43") of each of the outdoor surface material 40a and the indoor surface material 40b and the central piece 36a of the upper horizontal force bone 33 as shown in FIG. 3, and is fixed to the outdoor surface material 40a, the indoor surface, or the upper horizontal force bone 33 by adhesive or the like (or may not be fixed by adhesive or the like).

(Configuration - Heat insulation structure - Heat insulation structure on the door end side, heat insulation structure on the door tip side, upper heat insulation structure - 1st outdoor heat insulation part)
The first exterior heat shield 82 is a heat shielding means for suppressing heat conduction between the visible surface portion 44 of the exterior surface material 40a (hereinafter referred to as the "visible surface portion 44") and the exterior piece 36b of the upper lateral force bone 33. This first exterior heat shield 82 is made of, for example, a known heat shielding material (one example is calcium silicate material, etc.), and as shown in Figure 3, is provided between the visible surface portion 44 of the exterior surface material 40a and the exterior piece 36b of the upper lateral force bone 33, and is fixed to the exterior surface material 40a or the upper lateral force bone 33 with an adhesive or the like (or it does not have to be fixed with an adhesive or the like).

(Configuration - Heat shielding structure - Heat shielding structure on the end of the door, Heat shielding structure on the front side of the door, Heat shielding structure on the upper side - 1st indoor heat shielding part)
The first indoor heat shield 83 is a heat shielding means for suppressing heat conduction between the visible surface portion 44 of the indoor surface material 40b and the indoor side piece 36c of the upper lateral force bone 33. This first indoor heat shield 83 is made of, for example, a known heat shielding material (one example is calcium silicate material, etc.), and as shown in Fig. 3, is provided between the visible surface portion 44 of the indoor surface material 40b and the indoor side piece 36c of the upper lateral force bone 33, and is fixed to the indoor surface material 40b or the upper lateral force bone 33 with an adhesive or the like (or it does not have to be fixed with an adhesive or the like).

(Configuration - Heat shielding structure - Heat shielding structure on the door tail side, Heat shielding structure on the door tip side, Upper heat shielding structure - First external thermal expansion fireproof member)
The first external thermal expansion fire-resistant member 84 is for closing the gap between the opening/closing body 20 and the upper horizontal frame member 13 when a fire breaks out in the fully closed state. This first external thermal expansion fire-resistant member 84 is made of, for example, a known thermal expansion fire-resistant member (one example is Fi-Block (registered trademark) or the like), and as shown in Fig. 3, is provided on the prospective surface side portion 43 of each of the outdoor side surface material 40a and the indoor side surface material 40b outside the opening/closing body 20, and is fixed to the outdoor side surface material 40a and the indoor side surface material 40b with an adhesive or the like.

These heat-insulating structures on the tail side, the tip side, and the upper side allow the first front heat-insulating section 81, the first exterior heat-insulating section 82, and the first interior heat-insulating section 83 to prevent the heat of the fire from being conducted from one side of the projection direction to the other through the opening/closing body 20 when the fire breaks out in the fully closed state, thereby improving the heat-insulating performance of the opening/closing body 20. In addition, the first external thermal expansion fire-resistant member 84 can close the gap between the opening/closing body 20 and the upper horizontal frame member 13, preventing the fire from spreading from one side of the projection direction to the other through the opening/closing device 1.

(Configuration - Heat shielding structure - Intermediate heat shielding structure)
Returning to Fig. 2, the intermediate heat insulating structure will now be described. As shown in Fig. 2, the intermediate heat insulating structure includes a second outdoor heat insulating portion 91 and a second indoor heat insulating portion 92.

(Configuration - Heat shielding structure - Intermediate heat shielding structure - Second exterior heat shielding section)
The second exterior heat shield 91 is a heat shielding means for suppressing heat conduction between the visible surface portion 44 of the exterior surface material 40a and the exterior piece 36b of the intermediate longitudinal force bone 35. This second exterior heat shield 91 is made of, for example, a known heat shielding material (one example is calcium silicate material, etc.), and as shown in Fig. 2, is provided between the visible surface portion 44 of the exterior surface material 40a and the exterior piece 36b of the intermediate longitudinal force bone 35, and is fixed to the exterior surface material 40a or the intermediate longitudinal force bone 35 with an adhesive or the like (or may not be fixed with an adhesive or the like).

(Configuration - Heat shielding structure - Intermediate heat shielding structure - Second indoor heat shielding section)
The second indoor heat shield 92 is a heat shielding means for suppressing heat conduction between the visible surface portion 44 of the indoor surface material 40b and the indoor side piece 36c of the intermediate vertical force bone 35. This second indoor outside heat shield 91 is made of, for example, a known heat shielding material (one example is calcium silicate material, etc.), and as shown in Fig. 2, is provided between the visible surface portion 44 of the indoor surface material 40b and the indoor side piece 36c of the intermediate vertical force bone 35, and is fixed to the indoor side surface material 40b or the intermediate vertical force bone 35 with an adhesive or the like (or may not be fixed with an adhesive or the like).

With this intermediate heat insulation structure, when a fire occurs in the fully closed state, the second exterior heat insulation section 91 and the second interior heat insulation section 92 can prevent the heat of the fire from being transmitted from one side of the opening/closing body 20 to the other side in the forward direction, thereby further improving the heat insulation performance of the opening/closing body 20.

(Configuration - Heat shielding structure - Lower heat shielding structure)
Next, the lower heat shielding structure will be described. This lower heat shielding structure includes a front heat shielding portion 100, a blocking heat shielding portion 110, and a supporting heat shielding portion 120, as shown in FIG.

(Configuration - Heat shielding structure - Lower heat shielding structure - Surface heat shielding part)
The surface side heat shielding portion 100 is a surface side heat shielding means for suppressing heat conduction between at least one of the outdoor side surface material 40a or the indoor side surface material 40b and the lower lateral strength bone 34, and as shown in Figure 3, is provided with a first surface side heat shielding portion 101, a second surface side heat shielding portion 102, and a third surface side heat shielding portion 103.

(Configuration - Heat shielding structure - Lower heat shielding structure - Surface heat shielding part - First surface heat shielding part)
The first surface heat shield 101 is a first surface heat shield means for suppressing heat conduction between the visible surface portion 44 of the outdoor surface material 40a or the indoor surface material 40b and the lower lateral force bone 34. The first surface heat shield 101 is a flat, approximately plate-like body, and is provided between the visible surface portion 44 of each of the outdoor surface material 40a and the indoor surface material 40b and the lower lateral force bone 34.

Specifically, as shown in FIG. 3, the exterior surface material 40a is arranged between the exterior lower lateral force bone 34a (specifically, the third lower lateral force bone piece 34e) of the lower lateral force bone 34 and the exterior lower lateral force bone 34a in contact with the exterior surface material 40a or the exterior lower lateral force bone 34a, and is fixed to the exterior surface material 40a or the exterior lower lateral force bone 34a by adhesive or the like (or may not be fixed by adhesive or the like). Also, the interior surface material 40b is arranged between the exterior surface material 40b and the interior lower lateral force bone 34b (specifically, the third lower lateral force bone piece 34e) of the lower lateral force bone 34 in contact with the interior lower lateral force bone 34b, and is fixed to the interior surface material 40b or the interior lower lateral force bone 34b by adhesive or the like (or may not be fixed by adhesive or the like).

In the following description, the first surface side heat shielding portion 101a located on the outdoor side of the room will be referred to as the "outdoor first surface side heat shielding portion 101a," and the first surface side heat shielding portion 101b located on the indoor side of the room will be referred to as the "indoor first surface side heat shielding portion 101b."

The specific configuration of the outdoor first surface heat shield 101a and the indoor first surface heat shield 101b is arbitrary, but in this embodiment they are configured as follows.

That is, the front shapes of the outdoor first surface heat shielding portion 101a and the indoor first surface heat shielding portion 101b are each set to be approximately rectangular.

In addition, the left-right length of the exterior first surface side heat shielding portion 101a and the interior first surface side heat shielding portion 101b is set to be approximately the same as the left-right length of the exterior lower lateral force bone 34a (or the interior lower lateral force bone 34b), but is not limited thereto, and may be set shorter than the left-right length of the exterior lower lateral force bone 34a (or the interior lower lateral force bone 34b). In addition, the front-rear length of the exterior first surface side heat shielding portion 101a and the interior first surface side heat shielding portion 101b is set to be approximately the same as the front-rear length of the second lower lateral force bone piece 34d of the exterior lower lateral force bone 34a (or the interior lower lateral force bone 34b). Specifically, from the viewpoint of improving the heat insulation property against the outdoor side of the room, as shown in FIG. 3, the front-rear length of the exterior first surface side heat shielding portion 101a is set longer than the front-rear length of the interior first surface side heat shielding portion 101b. In addition, the vertical length of the exterior first surface heat shield 101a and the interior first surface heat shield 101b is set shorter than the vertical length of the lower lateral force bone 34 as shown in FIG. 3, but is not limited to this, and may be set longer than or approximately the same as the vertical length of the lower lateral force bone 34, for example.

The exterior first surface heat shield 101a and the interior first surface heat shield 101b are made of calcium silicate material. This allows the exterior first surface heat shield 101a and the interior first surface heat shield 101b to be lighter, and the weight of the opening/closing body 20 to be reduced. The material costs of the exterior first surface heat shield 101a and the interior first surface heat shield 101b can be relatively reduced, and the manufacturing costs of the opening/closing body 20 can be reduced. However, this is not limited to the above, and the opening/closing body 20 may be made of other heat shielding materials, such as thermal expansion fireproof materials, glass wool materials, and urethane materials.

(Configuration - Heat shielding structure - Lower heat shielding structure - Surface heat shielding part - Second surface heat shielding part)
The second surface heat shield 102 is a second surface heat shield means for suppressing heat conduction between the projected surface portion 43 of the outdoor surface material 40a or the indoor surface material 40b and the lower lateral force bone 34. The second surface heat shield 102 is a flat, approximately plate-like body, and is provided between the projected surface portion 43 of each of the outdoor surface material 40a and the indoor surface material 40b and the lower lateral force bone 34.

Specifically, as shown in FIG. 3, the projected surface side portion 43 of the exterior surface material 40a and the exterior lower lateral force bone 34a (specifically, the second lower lateral force bone piece 34d) of the lower lateral force bone 34 are arranged to abut the projected surface side portion 43 and the exterior lower lateral force bone 34a, and are fixed to the exterior surface material 40a or the exterior lower lateral force bone 34a by adhesive or the like (or may not be fixed by adhesive or the like). Also, the projected surface side portion 43 of the interior surface material 40b and the interior lower lateral force bone 34b (specifically, the second lower lateral force bone piece 34d) of the lower lateral force bone 34 are arranged to abut the projected surface side portion 43 and the interior lower lateral force bone 34b, and are fixed to the interior surface material 40b or the interior lower lateral force bone 34b by adhesive or the like (or may not be fixed by adhesive or the like).

In the following description, the second surface side heat shielding portion 102a located on the outdoor side of the room will be referred to as the "outdoor second surface side heat shielding portion 102a," and the second surface side heat shielding portion 102b located on the indoor side of the room will be referred to as the "indoor second surface side heat shielding portion 102b."

The specific configuration of the exterior second surface heat shield 102a and the interior second surface heat shield 102b is arbitrary, but in this embodiment they are configured as follows.

That is, the planar shapes of the exterior second surface heat shielding portion 102a and the interior second surface heat shielding portion 102b are each set to be approximately rectangular.

In addition, the left-right length of the exterior second surface heat shielding portion 102a and the interior second surface heat shielding portion 102b is set to be approximately the same as the left-right length of the exterior lower lateral force bone 34a (or the interior lower lateral force bone 34b), but is not limited thereto, and may be set shorter than the left-right length of the exterior lower lateral force bone 34a (or the interior lower lateral force bone 34b). In addition, the front-rear length of the exterior second surface heat shielding portion 102a and the interior second surface heat shielding portion 102b is set longer than the front-rear length of the second lower lateral force bone piece 34d of the exterior lower lateral force bone 34a (or the interior lower lateral force bone 34b). Specifically, as shown in FIG. 3, the front-rear length of the exterior second surface heat shielding portion 102a is set longer than the front-rear length of the interior second surface heat shielding portion 102b. In addition, the vertical length of the exterior second surface heat shield 102a and the interior second surface heat shield 102b is set to be approximately the same as the vertical length of the second lower lateral force bone piece 34d of the exterior lower lateral force bone 34a (or the interior lower lateral force bone 34b) as shown in FIG. 3, but is not limited thereto and may be set to be longer or shorter than the vertical length of the second lower lateral force bone piece 34d.

The exterior second surface heat shielding portion 102a and the interior second surface heat shielding portion 102b are made of a heat-expanding fire-resistant material (Fiblock (registered trademark), for example). As a result, when the fire breaks out in the fully closed state, the heat-expanding fire-resistant material expands due to the heat of the fire to close the gap between the projected surface side portion 43 of each of the exterior surface material 40a and the interior surface material 40b and the lower lateral support rib 34, and also to close the projected surface side gap PG. Therefore, even if the projected surface side gap PG cannot be closed by the closing portion 22, the fire can be prevented from spreading from one side of the projected direction to the other side through the projected surface side gap PG. However, this is not limited to the above, and other heat-shielding materials such as glass wool, urethane, and calcium silicate may be used.

(Configuration - Heat shielding structure - Lower heat shielding structure - Surface side heat shielding part - Third surface side heat shielding part)
The third surface heat shield 103 is a first surface heat shield for suppressing heat conduction between the visible surface portion 44 of the exterior surface material 40a or the interior surface material 40b and the tip surface of the lower lateral strength frame 34 on the exterior side or the interior side of the room. This third surface heat shield 103 is made of, for example, a known heat shielding material (one example is Fi-Block (registered trademark), etc.), and is provided over almost the entire area between the visible surface portion 44 of each of the exterior surface material 40a and the interior surface material 40b and the tip surface of the lower lateral strength frame 34 on the exterior side or the interior side of the room, as shown in Fig. 3.

(Configuration-Heat shielding structure-Lower heat shielding structure-Front heat shielding part-Other configurations)
Furthermore, the specific configurations of the first surface side heat shield 101 and the second surface side heat shield 102 are arbitrary, but in the embodiment, as shown in Figure 3, the thickness of the first surface side heat shield 101 (in Figure 3, the front-to-back length of the first surface side heat shield) is set to be thicker than the thickness of the second surface side heat shield 102 (in Figure 3, the up-to-down length of the second surface side heat shield 102).

As a result, when a fire occurs in the fully closed state, the amount of installation of the second surface side heat shielding portion 102 can be reduced while effectively suppressing heat conduction between the outdoor surface material 40a or the indoor surface material 40b and the lower lateral strength bone 34, compared to when the thickness of the first surface side heat shielding portion 101 is thinner than the thickness of the second surface side heat shielding portion 102. This allows the material cost of the second surface side heat shielding portion 102 to be reduced while ensuring the heat insulation properties of the opening/closing body 20.

However, this is not limiting, and for example, the thickness of the first surface side heat shield 101 may be set to be thinner than the thickness of the second surface side heat shield 102, or may be set to be approximately the same.

The above-mentioned surface heat shielding portion 100 can suppress heat conduction between the outdoor surface material 40a or the indoor surface material 40b and the lower lateral force bone 34 when a fire occurs on either the indoor side or the outdoor side of the room in the fully closed state. This makes it easier to prevent the heat of the fire from being conducted from one side of the projection to the other side through the opening/closing body 20, thereby improving the heat shielding properties of the opening/closing body 20. In addition, compared to the case where only one of the first surface heat shielding portion 101 or the second surface heat shielding portion 102 is provided, heat conduction between the outdoor surface material 40a or the indoor surface material 40b and the lower lateral force bone 34 can be suppressed when a fire occurs in the fully closed state, making it even easier to prevent the heat of the fire from being conducted from one side of the projection to the other side through the opening/closing body 20.

(Configuration - Heat shielding structure - Lower heat shielding structure - Blocking heat shielding part)
The blocking side heat shield 110 is a blocking side heat shield means for suppressing heat conduction between the blocking portion 22 and the lower lateral force bone 34. The blocking side heat shield 110 is a flat, approximately plate-shaped body, and is provided between the blocking portion 22 and the lower lateral force bone 34.

Specifically, as shown in FIG. 3, the blocking side interlocking portion 22c of the blocking portion 22 and the exterior lower lateral force bone 34a (specifically, the third lower lateral force bone piece 34e) of the lower lateral force bone 34 are arranged to abut against the blocking side interlocking portion 22c and the exterior lower lateral force bone 34a, and are fixed to the blocking side interlocking portion 22c or the exterior lower lateral force bone 34a by adhesive or the like (or may not be fixed by adhesive or the like). Also, the blocking side interlocking portion 22c of the blocking portion 22 and the interior lower lateral force bone 34b (specifically, the third lower lateral force bone piece 34e) of the lower lateral force bone 34 are arranged to abut against the blocking side interlocking portion 22c and the interior lower lateral force bone 34b, and are fixed to the blocking side interlocking portion 22c or the interior lower lateral force bone 34b by adhesive or the like (or may not be fixed by adhesive or the like).

In the following description, the blocking side heat shielding section 111 located on the outdoor side of the room will be referred to as the "outdoor blocking side heat shielding section 111," and the blocking side heat shielding section 112 located on the indoor side of the room will be referred to as the "indoor blocking side heat shielding section 112."

The specific configuration of the exterior blocking side heat shielding section 111 and the interior blocking side heat shielding section 112 is arbitrary, but in this embodiment they are configured as follows.

That is, the front shapes of the exterior blocking side heat shielding section 111 and the interior blocking side heat shielding section 112 are each set to be approximately rectangular.

The left-right length of the exterior blocking side heat shielding portion 111 and the interior blocking side heat shielding portion 112 is set to be approximately the same as the left-right length of the exterior lower lateral force bone 34a (or the interior lower lateral force bone 34b), but is not limited thereto, and may be set shorter than the left-right length of the exterior lower lateral force bone 34a (or the interior lower lateral force bone 34b). The front-rear length of the exterior blocking side heat shielding portion 111 and the interior blocking side heat shielding portion 112 is set to be approximately the same as the front-rear length of the third lower lateral force bone piece 34e of the exterior lower lateral force bone 34a (or the interior lower lateral force bone 34b) as shown in FIG. 3, but is not limited thereto, and may be set longer or shorter than the front-rear length of the third lower lateral force bone piece 34e. In addition, the vertical lengths of the exterior-blocking heat shielding section 111 and the interior-blocking heat shielding section 112 are set to be shorter than or approximately equal to the vertical length of the lower lateral support bone 34, as shown in FIG. 3.

The exterior blocking side heat shielding section 111 and the interior blocking side heat shielding section 112 are made of a thermally expandable fire-resistant material (Fiblock (registered trademark), for example). As a result, when a fire breaks out in the fully closed state, the thermally expandable fire-resistant material expands due to the heat of the fire to block the gap between the blocking section 22 and the lower lateral support rib 34, and also blocks the projected side gap PG. Therefore, even if the projected side gap PG cannot be blocked by the blocking section 22, the fire can be prevented from spreading from one side of the projected direction to the other side through the projected side gap PG. However, this is not limited to the above, and the insulating material may be other than thermally expandable fire-resistant material, such as glass wool or urethane.

This blocking side heat shield 110 can suppress heat conduction between the blocking part 22 and the lower lateral force bone 34 when a fire breaks out in the fully closed state, making it easier to prevent the heat of the fire from being conducted in either direction via the blocking part 22 and the lower lateral force bone 34 (for example, the blocking part 22 being heated by the heat of the fire, the heat being conducted to the lower lateral force bone 34, and then the conducted heat being conducted to the exterior surface material 40a or the interior surface material 40b).

(Configuration-Heat shielding structure-Lower heat shielding structure-Support side heat shielding part)
The support-side heat shield 120 is a support-side heat shield means for suppressing heat conduction between the overlapping parts of the exterior lower lateral force bone 34a and the interior lower lateral force bone 34b. The support-side heat shield 120 is a flat, approximately plate-like body, and is provided between the overlapping parts of the exterior lower lateral force bone 34a and the interior lower lateral force bone 34b.

Specifically, as shown in FIG. 3, the first lower lateral force bone piece 34c of the exterior lower lateral force bone 34a and the first lower lateral force bone piece 34c of the interior lower lateral force bone 34b are disposed between the first lower lateral force bone piece 34c and are fixed to the exterior lower lateral force bone 34a or the interior lower lateral force bone 34b with an adhesive or the like (or may not be fixed with an adhesive or the like).

The specific configuration of the support-side heat shield 120 is optional, but in this embodiment it is configured as follows.

In other words, the planar shape of the support side heat shield 120 is set to be approximately rectangular.

The left-right length of the support side heat shield 120 is set to be approximately the same as the left-right length of the exterior lower lateral force bone 34a (or the interior lower lateral force bone 34b), but is not limited thereto, and may be set shorter than the left-right length of the exterior lower lateral force bone 34a (or the interior lower lateral force bone 34b). The front-rear length of the support side heat shield 120 is set to be approximately the same as the front-rear length of the first lower lateral force bone piece 34c of the exterior lower lateral force bone 34a (or the interior lower lateral force bone 34b) as shown in FIG. 3, but is not limited thereto, and may be set longer or shorter than the front-rear length of the first lower lateral force bone piece 34c. As shown in FIG. 3, the vertical length of the support-side heat shield 120 is set to be approximately the same as the vertical length of the first lower lateral force bone piece 34c of the exterior lower lateral force bone 34a (or the interior lower lateral force bone 34b), but is not limited thereto and may be set to be, for example, shorter or longer than the vertical length of the first lower lateral force bone piece 34c.

The material of the support side heat shield 120 is made of a heat-expanding fire-resistant material (such as FiBlock (registered trademark) as one example), but is not limited to this and may be made of other heat shielding materials such as a heat-expanding fire-resistant material, glass wool material, or urethane material.

This type of support side heat shield 120 can suppress heat conduction between the overlapping parts of the exterior lower lateral force bone 34a and the interior lower lateral force bone 34b when a fire occurs in the fully closed state, making it easier to prevent the heat of the fire from being conducted from one side to the other in the prospective direction via the opening/closing body 20 when the lower lateral force bone 34 is made of multiple members.

When a fire breaks out in the fully closed state, the above-described lower heat-shielding structure prevents the heat of the fire from being transmitted from one side of the opening/closing body 20 to the other side by the surface-side heat-shielding section 100, the blocking-side heat-shielding section 110, and the support-side heat-shielding section 120, so that the heat-shielding performance of the opening/closing body 20 can be further improved.

(Action of opening and closing body)
The following describes the operation of the opening/closing body 20 configured as described above. The operation of the opening/closing body 20 can be broadly divided into an operation when no fire has occurred (hereinafter referred to as "normal operation") and an operation when a fire has occurred (hereinafter referred to as "fire operation"), and each operation will be described below.

(Opening and closing body action - normal action)
First, normal operation will be described.

For example, when the opening/closing body 20 does not have a prospective side warp, when the opening/closing body 20 is moved from the fully open position (or half-open position) to the fully closed position, the movement of the opening/closing body 20 is restricted by the first movement limiting part 60 due to the retracting and retracting movement of the first engagement part 61d of the first movement limiting part 60 and the retracting and retracting movement of the second engagement part 71b of the one-side second movement limiting part 70a and the other-side second movement limiting part 70b, and the movement of the opening/closing body 20 is restricted by the one-side second movement limiting part 70a and the other-side second movement limiting part 70b.

Thereafter, when an operation to release the movement restriction of the first movement restriction unit 60 is performed via the first outdoor operation unit 61b (or the first indoor operation unit 61c) of the first movement restriction unit 60, the movement restriction of the opening/closing body 20 by the first movement restriction unit 60 is released. Furthermore, an operation to release the movement restriction of each of the one-side second movement restriction unit 70a and the other-side second movement restriction unit 70b is performed via the first interlocking unit and the second interlocking unit, so that the movement restriction of the opening/closing body 20 is released by the one-side second movement restriction unit 70a and the other-side second movement restriction unit 70b.

On the other hand, for example, when the opening/closing body 20 is warped on the projected side and the position of the opening/closing body 20 changes from the fully open position (or half-open position) to the fully closed position, the length of the second gap G2 becomes shorter than when no warping on the projected side occurs. However, as in the case where no warping on the projected side occurs in the opening/closing body 20, the movement of the opening/closing body 20 is restricted by the first movement restricting part 60 and the movement of the opening/closing body 20 is restricted by the second movement restricting part 70a on one side and the second movement restricting part 70b on the other side due to the extending and retracting movement of the first engaging part 61d of the first movement restricting part 60 and the extending and retracting movement of the second engaging part 71b of each of the second movement restricting part 70a on one side and the second movement restricting part 70b on the other side.

After that, when the operation to release the movement restriction of the first movement restriction unit 60 is performed via the first outdoor operation unit 61b (or the first indoor operation unit 61c) of the first movement restriction unit 60, the movement restriction of the opening/closing body 20 is released by the first movement restriction unit 60, and the movement restriction of the opening/closing body 20 is released by the one-side second movement restriction unit 70a and the other-side second movement restriction unit 70b, in the same way as when no projected side warping occurs in the opening/closing body 20.

Due to this normal action, the movement of the opening/closing body 20 can be restricted by the first movement restricting part 60, the one-side second movement restricting part 70a, and the other-side second movement restricting part 70b in the fully closed state, regardless of whether warping of the projected side has occurred.

(Operation of opening and closing body - Action in case of fire)
Next, the action in the event of a fire will be explained. The action in the event of a fire can be broadly divided into the action when a fire occurs inside the room and the action when a fire occurs outside the room, but since these actions are almost the same, only the action when a fire occurs outside the room will be explained below.

For example, in the fully closed state, with the movement of the opening/closing body 20 restricted by the first movement restricting part 60, the one-side second movement restricting part 70a, and the other-side second movement restricting part 70b, if a fire breaks out on the outside of the room, the heat of the fire will heat the outside surface material 40a.

In this case, even if the opening/closing body 20 is about to develop a warp on the expected side (or the warp on the expected side is about to increase), as described above, the movement of the opening/closing body 20 is restricted by the first movement limiting section 60, the one-side second movement limiting section 70a, and the other-side second movement limiting section 70b, so that the occurrence of the warp on the expected side (or the increase in the warp on the expected side) is suppressed.

In addition, if some of the heat from the fire is conducted directly from the outdoor surface material 40a to the indoor surface material 40b, or indirectly from the outdoor surface material 40a to the indoor surface material 40b via the tail side vertical force bone 31, the tip side vertical force bone 32, the upper side horizontal force bone 33, the lower side horizontal force bone 34, and the middle vertical force bone 35, the first projecting surface side heat shielding portion 81, the first outdoor side heat shielding portion 82, the first indoor side heat shielding portion 83, the second outdoor side heat shielding portion 91, the second indoor side heat shielding portion 92, the first indoor side heat shielding portion 93, the second indoor side heat shielding portion 94, the first indoor side heat shielding portion 95, the first indoor side heat shielding portion 96, the first indoor side heat shielding portion 97, the first indoor side heat shielding portion 98, the first indoor side heat shielding portion 99, the first indoor side heat shielding portion 100, the first indoor side heat shielding portion 101, the first indoor side heat shielding portion 102, the first indoor side heat shielding portion 103, the first indoor side heat shielding portion 104, the first indoor side heat shielding portion 105, the first indoor side heat shielding portion 106, the first indoor side heat shielding portion 107, the first indoor side heat shielding portion 108, the first indoor side heat shielding portion 109 ... 92, the surface heat shielding portion 100, the blocking heat shielding portion 110, and the support heat shielding portion 120 suppress heat conduction between the outdoor surface material 40a and each of the trailing side vertical force bones 31, the leading side vertical force bones 32, the upper horizontal force bones 33, the lower horizontal force bones 34, and the middle vertical force bones 35, between each of the trailing side vertical force bones 31, the leading side vertical force bones 32, the upper horizontal force bones 33, the lower horizontal force bones 34, and the middle vertical force bones 35 and the indoor surface material 40b, and between the lower horizontal force bones 34 and the blocking portion 22.

Due to this action during a fire, regardless of whether or not warping of the projected side has occurred, the movement of the opening/closing body 20 can be restricted by the first movement restricting section 60, the one-side second movement restricting section 70a, and the other-side second movement restricting section 70b, and the spread of the fire from the outside to the inside of the room via the opening/closing device 1 can be suppressed.

(Effects of the embodiment)
Thus, according to the embodiment, the device is provided with a first movement limiting unit 60 for limiting the movement of at least one opening/closing body 20 in a fully closed state, the first movement limiting unit 60 being located on the door end side in the fully closed state, and a second movement limiting unit 70 for limiting the movement of at least one opening/closing body 20 in a fully closed state, the second movement limiting unit 70 being located outside the first movement limiting unit 60 in an orthogonal forward direction perpendicular to the direction from the door end side to the door tail side in the fully closed state. Regardless of whether or not warping occurs in the forward direction of at least one opening/closing body 20, the first movement limiting unit 60 and the second movement limiting unit 70 are configured so that the movement of at least one opening/closing body 20 can be limited by the first movement limiting unit 60 and the second movement limiting unit 70 in the fully closed state. Therefore, regardless of whether or not the above-mentioned warping occurs, the movement of the opening/closing body 20 can be limited by the first movement limiting unit 60 and the second movement limiting unit 70 in the fully closed state. Therefore, regardless of whether the above-mentioned warping occurs or not, the usability of the first movement limiting section 60 and the second movement limiting section 70 under normal conditions can be maintained, while when a fire occurs in either of the prospective directions, the fire can be prevented from spreading from one of the prospective directions to the other through the opening and closing device 1 in the fully closed state, thereby improving the usability and fire resistance of the opening and closing device 1.

In addition, since the first movement limiting unit 60 and the second movement limiting unit 70 are configured so that the first limiting position LP1 and the second limiting position LP2 are different from each other in the projection direction at least when the warping does not occur, the first movement limiting unit 60 and the second movement limiting unit 70 are configured so that the first limiting position LP1 and the second limiting position LP2 are different from each other in the projection direction, the first limiting position LP1 and the second limiting position LP2 can be set according to the warping, and when the warping occurs, the first movement limiting unit 60 and the second movement limiting unit 70 can effectively limit the movement of the opening/closing body 20 in the fully closed state.

In addition, the multiple second movement limiting parts 70 include a one-side second movement limiting part 70a that is located on one side of the first movement limiting part 60 in the orthogonal facing direction in the fully closed state, and an other-side second movement limiting part 70b that is located on the other side of the first movement limiting part 60 in the fully closed state in the orthogonal facing direction in the fully closed state. This makes it easier to improve the fire resistance of the opening and closing device 1, as compared to a case in which only one of the one-side second movement limiting part 70a or the other-side second movement limiting part 70b is provided.

In addition, the movement restriction of at least one opening/closing body 20 by the first movement limiting unit 60 is linked to the movement restriction of at least one opening/closing body 20 by the second movement limiting unit 70, and a linking means is provided for linking the release of the movement restriction of at least one opening/closing body 20 by the first movement limiting unit 60 to the release of the movement restriction of at least one opening/closing body 20 by the second movement limiting unit 70. This allows the operation of the first movement limiting unit 60 to be linked to the operation of the second movement limiting unit 70, and reduces the effort required to operate the first movement limiting unit 60 and the second movement limiting unit 70 compared to when the operation of the first movement limiting unit 60 and the operation of the second movement limiting unit 70 cannot be linked.

In addition, the second lock receiving portion 72 is configured so that the second engaged portion 72b is positioned further toward the opening direction than the first restricting position LP1 in the fully closed state. Therefore, by simply adopting the simple configuration of the second lock receiving portion 72, the movement of the opening/closing body 20 can be restricted by the first movement restricting portion 60 and the second movement restricting portion 70 in the fully closed state regardless of whether the warping occurs, and the manufacturability of the second movement restricting portion 70 can be improved.

[III] Modifications to Each Embodiment Although each embodiment of the present invention has been described above, the specific configuration and means of the present invention can be modified and improved as desired within the scope of the technical ideas of each invention described in the claims. Such modifications will be described below.

(About the problem to be solved and the effects of the invention)
First, the problems that the invention aims to solve and the effects of the invention are not limited to those described above, and the present invention may solve problems that are not described above or achieve effects that are not described above, or may solve only some of the problems that are described or achieve only some of the effects that are described.

(shape, number, structure, time series)
The components illustrated in the embodiments and drawings may be modified and improved as desired within the scope of the technical concept of the present invention with respect to the shape, numerical values, or structure or chronological relationships of multiple components.

(Regarding switching devices)
In the above embodiment, the opening and closing device 1 has been described as a single-wing hinged door, but is not limited thereto. For example, the opening and closing device 1 may be a double-wing hinged door or a double-wing sliding door.

In this case, a first movement limiting unit 60 and a second movement limiting unit 70 may be provided on the door end side of the two opening/closing bodies 20, so that the movement of the two opening/closing bodies 20 may be limited by the first movement limiting unit 60 and the second movement limiting unit 70 in the fully closed state.

The blocking portion 22 may be attached to one of the two opening/closing bodies 20 and arranged to block the gap PG between one of the two opening/closing bodies 20 and the other (another opening/closing body 20) (specifically, the gap between the end-side portions of the two opening/closing bodies 20). In such a case, a surface-side heat shielding portion 100 for suppressing heat conduction between the outdoor surface material 40a or the indoor surface material 40b of one of the two opening/closing bodies 20 and the end-side vertical force bone 32, a blocking-side heat shielding portion 110 for suppressing heat conduction between the blocking portion 22 and the end-side vertical force bone 32, or a support-side heat shielding portion 120 for suppressing heat conduction between a part of the overlapping outdoor lower lateral force bone 34a and a part of the indoor lower lateral force bone 34b may be provided.

In addition, in the above embodiment, the opening and closing device 1 has been described as having a first interlocking unit and a second interlocking unit, but this is not limited thereto, and for example, the first interlocking unit or the second interlocking unit may be omitted. In this case, the one-side second movement limiting unit 70a or the other-side second movement limiting unit 70b may be provided with an operating unit for operating the one-side second movement limiting unit 70a or the other-side second movement limiting unit 70b.

In addition, in the above embodiment, the opening and closing device 1 is described as a fire door, but this is not limited thereto, and it may also be applied to, for example, a non-fire door.

(About the frame)
In the above embodiment, the frame body 10 is described as having vertical side filler 11f, upper filler 13f, and lower filler 14c, but this is not limited to the above, and for example, the vertical side filler 11f, upper filler 13f, or lower filler 14c may be omitted.

(About the opening and closing body)
In the above embodiment, the opening/closing body 20 is described as having the blocking portion 22 and the heat insulating structure, but this is not limiting. For example, the blocking portion 22 or the heat insulating structure may be omitted. In this case, the lower lateral force bone 34 may be configured to have substantially the same structure as the upper lateral force bone 33. Furthermore, the lower heat insulating structure may be configured to have substantially the same structure as the upper heat insulating structure.

In the above embodiment, the expected side warping that occurs in the opening/closing body 20 is described as a warp in which the end of the opening/closing body 20 on the orthogonal appearance direction side protrudes further toward the opening direction side than the center of the opening/closing body 20 on the orthogonal appearance direction side, but this is not limited to the above. For example, when various airtight parts are omitted and an external factor is present on the indoor side of a room, the end of the opening/closing body 20 on the orthogonal appearance direction side may be warped so as to protrude further toward the closing direction side than the center of the opening/closing body 20 on the orthogonal appearance direction side. In this case, the second limiting position LP2 may be configured to be located closer to the closing direction side than the first limiting position LP1 when no expected side warping occurs.

In addition, in the above embodiment, the opening/closing body 20 is described as having the intermediate longitudinal force bone 35, but this is not limited thereto, and for example, the intermediate longitudinal force bone 35 may be omitted. In this case, the heat insulating structure on the intermediate side of the opening/closing body 20 can be omitted.

(Exterior and interior surface materials)
In the above embodiment, the outdoor surface material 40a is described as covering one of the two visible surfaces and a plurality of visible surfaces of the surface of the opening/closing body 20, but is not limited thereto. For example, the outdoor surface material 40a may cover only one of the two visible surfaces, or may cover only one of the two visible surfaces and one visible surface.

In the above embodiment, the interior surface material 40b is described as covering the other of the two visible surfaces and the multiple visible surfaces of the surface of the opening/closing body 20, but this is not limited to the above. For example, it may cover only the other of the two visible surfaces, or it may cover only one of the two visible surfaces and one visible surface.

(Regarding the lower lateral force bone)
In the above embodiment, the lower lateral force bone 34 is described as being composed of two members (the exterior lower lateral force bone 34a and the interior lower lateral force bone 34b). However, this is not limited to this and, for example, the lower lateral force bone 34 may be composed of a single member (as an example, the exterior lower lateral force bone 34a and the interior lower lateral force bone 34b may be integrally formed).

In addition, in the above embodiment, it has been described that at least a portion of the lower lateral force bone 34 is formed in a concave shape capable of accommodating a portion of the blocking portion 22, but this is not limited thereto, and for example, the lower lateral force bone 34 may be formed in a non-concave shape that is unable to accommodate a portion of the blocking portion 22.

(Regarding the blocked part)
In the above embodiment, the blocking portion 22 is described as being attached to the lower lateral force bone 34, but the present invention is not limited thereto, and may be attached, for example, to another force bone (for example, the trailing edge vertical force bone 31, the leading edge vertical force bone 32, or the upper lateral force bone 33) other than the lower lateral force bone 34. In this case, the heat insulating structure on the other force bone side may be configured substantially similarly to the lower heat insulating structure.

(About movement restriction structures)
In the above embodiment, it has been described that the first movement limiting section 60 and the second movement limiting section 70 are configured so that the first limiting position LP1 and the second limiting position LP2 are different from each other in the prospective direction, at least when no prospective side warping occurs. However, this is not limited to this, and for example, the first limiting position LP1 and the second limiting position LP2 may be configured so as to be the same in the prospective direction.

In this case, for example, the second lock body 71 may be configured so that the second engagement portion 71b is located closer to the closing direction than the first restricting position LP1 in the fully closed state. In detail, the second body side storage portion 71a is arranged so as to be located closer to the closing direction than the first body side storage portion 61a, and the second body side insertion opening 71c is arranged so as to be located closer to the closing direction than the first body side insertion opening 61e. As a result, by simply adopting the simple configuration of the second lock body 71, the movement of the opening/closing body 20 can be restricted by the first movement restricting portion 60 and the second movement restricting portion 70 in the fully closed state regardless of whether or not there is a warp on the projected side, and the manufacturability of the second movement restricting portion 70 can be improved.

In addition, in the above embodiment, it has been described that the number of second movement limiting units 70 installed is two, but this is not limited thereto, and for example, there may be only one, or there may be three or more.

In addition, in the above embodiment, the movement limiting structure is described as having one side second movement limiting portion 70a and the other side second movement limiting portion 70b, but this is not limited thereto, and for example, it may have only one of the one side second movement limiting portion 70a or the other side second movement limiting portion 70b.

In addition, in the above embodiment, the first movement limiting unit 60 is described as a latch lock, but it is not limited to this, and may be, for example, a locking device other than a latch lock (for example, a reversible latch lock, a rod lock, or a cremone lock) or a movement limiting member other than a locking device.

In the above embodiment, the first lock body 61 of the first movement limiting unit 60 is described as having the first body side storage unit 61a, the first outside operation unit 61b, the first inside operation unit 61c, and the first engagement unit 61d. However, this is not limited to the above. For example, in addition to these components, a deadbolt that can be inserted into the first receiving side insertion port 62c of the first lock receiving unit 62 may be provided. In this case, regardless of whether or not the projection side warping occurs, it is preferable that the deadbolt is configured so as not to hinder the first movement limiting unit 60 and the second movement limiting unit 70 from restricting the movement of the opening/closing body 20 in the fully closed state. As an example, the deadbolt may be configured to be approximately the same in shape and size as (or smaller than) the first engagement unit 61d, and may be provided so as to be located a first distance D1 away from the exterior visible surface of the opening/closing body 20 toward the inside in the front-rear direction.

In addition, in the above embodiment, the second movement limiting portion 70 is described as a reverse latch lock, but it is not limited to this, and may be, for example, a locking device other than a reverse latch lock (for example, a latch lock, a rod lock, or a cremone lock) or a movement limiting member other than a locking device.

In the above embodiment, the second lock receiving portion 72 is configured so that the second engaged portion 72b is located further in the opening direction than the first restricting position LP1 in the fully closed state, but this is not limited to the above. For example, in addition to the arrangement of the second lock receiving portion 72, the second lock body 71 may be configured so that the second engaging portion 71b is located further in the closing direction than the first restricting position LP1 in the fully closed state.

(About heat insulation structure)
In the above embodiment, it has been described that the heat-insulating structure includes a heat-insulating structure on the trailing edge side, a heat-insulating structure on the leading edge side, a heat-insulating structure on the middle side, an upper heat-insulating structure, and a lower heat-insulating structure, but this is not limited to the above, and for example, the heat-insulating structure on the trailing edge side, the heat-insulating structure on the leading edge side, the heat-insulating structure on the middle side, the upper heat-insulating structure, or the lower heat-insulating structure may be omitted.

(About the lower heat shielding structure)
In the above embodiment, the lower heat shielding structure is described as having a blocking side heat shielding portion 110 and a supporting side heat shielding portion 120, but this is not limited to this, and for example, the blocking side heat shielding portion 110 or the supporting side heat shielding portion 120 may be omitted.

(About the front heat shield)
In the above embodiment, it has been described that the front surface side heat shield 100 comprises a first surface side heat shield 101, a second surface side heat shield 102, and a third surface side heat shield 103, but this is not limited to this and, for example, the front surface side heat shield 100 may comprise only one or only two of the first surface side heat shield 101, the second surface side heat shield 102, and the third surface side heat shield 103.

In the above embodiment, the surface heat shielding portion 100 (first surface heat shielding portion 101, second surface heat shielding portion 102, and third surface heat shielding portion 103) is described as being provided between each of the outdoor surface material 40a and the indoor surface material 40b and the lower lateral force bone 34, but this is not limited thereto, and for example, it may be provided between only one of the outdoor surface material 40a or the indoor surface material 40b and the lower lateral force bone 34. In this case, the blocking portion 22 may be provided so as to be located on the other side of either the outdoor surface material 40a or the indoor surface material 40b (i.e., the side where the surface heat shielding portion 100 is not provided).

(About the blocked heat shield part)
In the above embodiment, it was described that the opening/closing body 20 is provided with an exterior blocking side heat shielding section 111 and an interior blocking side heat shielding section 112, but this is not limited to the above, and for example, only one of the exterior blocking side heat shielding section 111 or the interior blocking side heat shielding section 112 may be provided.

In addition, in the above embodiment, it has been described that the exterior blocking side heat shield 111 is provided between the blocking side interlocking portion 22c of the blocking portion 22 and the third lower lateral force bone piece 34e of the exterior lower lateral force bone 34a, but this is not limited thereto, and it may be provided, for example, between the blocking side interlocking portion 22c and the first lower lateral force bone piece 34c of the exterior lower lateral force bone 34a.

(Additional Note)
The opening and closing device of Appendix 1 is an opening and closing device having at least one opening and closing body for opening and closing an opening of a building, and is provided with a first movement limiting means for limiting the movement of the at least one opening and closing body in a fully closed state in which the opening is fully closed by the at least one opening and closing body, the first movement limiting means being located on the door end side in the fully closed state, and a second movement limiting means for limiting the movement of the at least one opening and closing body in the fully closed state, the second movement limiting means being located outside the first movement limiting means in a front direction perpendicular to the direction from the door end side to the door end side in the fully closed state, and the first movement limiting means and the second movement limiting means are configured so that the movement of the at least one opening and closing body can be limited by the first movement limiting means and the second movement limiting means in the fully closed state regardless of whether or not warping occurs in the front direction of the at least one opening and closing body.

The opening and closing device of Supplementary Note 2 is the opening and closing device described in Supplementary Note 1, in which the first movement limiting means and the second movement limiting means are configured such that, at least in a state in which the warping does not occur, a first limiting position in which the first movement limiting means can limit the at least one opening and closing body and a second limiting position in which the second movement limiting means can limit the at least one opening and closing body are mutually different in the prospective direction.

The opening and closing device of Supplementary Note 3 is an opening and closing device according to Supplementary Note 1 or 2, which includes a plurality of the second movement limiting means, and the plurality of second movement limiting means include a one-side second movement limiting means that is located on one side of the viewing direction outside the first movement limiting means in the fully closed state, and an other-side second movement limiting means that is located on the other side of the viewing direction outside the first movement limiting means in the fully closed state.

The opening and closing device of Supplementary Note 4 is an opening and closing device described in any one of Supplementary Notes 1 to 3, and is provided with an interlocking means for interlocking the movement restriction of the at least one opening and closing body by the first movement limiting means with the movement restriction of the at least one opening and closing body by the second movement limiting means, and for interlocking the release of the movement restriction of the at least one opening and closing body by the first movement limiting means with the release of the movement restriction of the at least one opening and closing body by the second movement limiting means.

The opening/closing device of Supplementary Note 5 is an opening/closing device according to any one of Supplementary Notes 1 to 4, which is a single-leaf hinged door, and the second movement limiting means includes a lock body provided on the opening/closing body, and a lock receiving portion provided on a frame member that is located on the lock body side among the frame members that constitute a frame body provided on the periphery of the opening, and the lock receiving portion has an engaged portion that engages with the engaging portion that constitutes the lock body, and the lock body is configured so that the engaging portion is located in the closing direction side of the limiting position at which the opening/closing body can be limited by the first movement limiting means in the fully closed state, and/or the lock receiving portion is configured so that the engaged portion is located in the opening direction side of the limiting position in the fully closed state.

(Effect of supplementary notes)
According to the opening and closing device described in Appendix 1, the device is provided with a first movement limiting means for limiting the movement of at least one opening and closing body in a fully closed state, the first movement limiting means being located on the door edge side in the fully closed state, and a second movement limiting means for limiting the movement of at least one opening and closing body in a fully closed state, the second movement limiting means being located outside the first movement limiting means in a front direction perpendicular to the direction from the door edge side to the door trailing side in the fully closed state, and the first movement limiting means and the second movement limiting means are configured so that the movement of at least one opening and closing body can be limited by the first movement limiting means and the second movement limiting means in the fully closed state regardless of whether or not warping occurs in the front direction of the at least one opening and closing body, so that the movement of the opening and closing body can be limited by the first movement limiting means and the second movement limiting means in the fully closed state regardless of whether or not the above-mentioned warping occurs. Therefore, regardless of whether the above-mentioned warping occurs or not, the usability of the first movement limiting means and the second movement limiting means under normal conditions can be maintained, and when a fire occurs in either of the prospective directions, the fire can be prevented from spreading from one of the prospective directions to the other via the opening and closing device in the fully closed state, thereby improving the usability and fire resistance of the opening and closing device.

According to the opening and closing device described in Appendix 2, the first movement limiting means and the second movement limiting means are configured so that the first limiting position and the second limiting position are different from each other in the expected direction at least when the warping does not occur. Therefore, since the first movement limiting means and the second movement limiting means are configured so that the first limiting position and the second limiting position are different from each other in the expected direction, the first limiting position and the second limiting position can be set according to the warping, and when the warping occurs, the movement of the opening and closing body can be effectively limited by the first movement limiting means and the second movement limiting means in the fully closed state.

According to the opening and closing device described in Appendix 3, the multiple second movement limiting means include one-side second movement limiting means that is located on one side of the front view direction outside the first movement limiting means in the fully closed state, and the other-side second movement limiting means that is located on the other side of the front view direction outside the first movement limiting means in the fully closed state. This makes it easier to improve the fire resistance of the opening and closing device, since it is possible to suppress the warping caused by the heat of a fire when the fire occurs in the fully closed state, compared to a case in which only one of the one-side second movement limiting means or the other-side second movement limiting means is provided.

The opening and closing device described in Appendix 4 includes an interlocking means for interlocking the movement restriction of at least one opening and closing body by the first movement limiting means with the movement restriction of at least one opening and closing body by the second movement limiting means, and for interlocking the release of the movement restriction of at least one opening and closing body by the first movement limiting means with the release of the movement restriction of at least one opening and closing body by the second movement limiting means. This allows the operation of the first movement limiting means to be interlocked with the operation of the second movement limiting means, and reduces the effort required to operate the first movement limiting means and the second movement limiting means compared to a case in which the operation of the first movement limiting means cannot be interlocked with the operation of the second movement limiting means.

According to the opening/closing device described in Appendix 5, the lock body is configured so that in the fully closed state, the engaging portion is located further in the closing direction than the limiting position at which the opening/closing body can be limited by the first movement limiting means, and/or the lock receiving portion is configured so that in the fully closed state, the engaged portion is located further in the opening direction than the limiting position. Therefore, by simply adopting the simple configuration of the lock body or the simple configuration of the lock receiving portion, the movement of the opening/closing body can be limited by the first movement limiting means and the second movement limiting means in the fully closed state, regardless of whether the warping has occurred, and the manufacturability of the second movement limiting means can be improved.

REFERENCE SIGNS LIST 1 opening/closing device 2 framework 3 opening 4 floor surface 10 frame 11 end-of-door vertical frame member 11a vertical frame member main body 11b vertical fixing member 11c vertical airtight portion 11d vertical recess 11e vertical airtight recess 11f vertical filling member 12 end-of-door vertical frame member 12a end-of-door joint surface 12b abutment portion 13 upper horizontal frame member 13a upper horizontal frame member main body 13b upper fixing member 13c upper airtight portion 13d upper recess 13e upper airtight recess 13f upper filling member 13g upper joint surface 14 lower horizontal frame member 14a lower horizontal frame member main body 14b lower fixing member 14c lower filling member 20 opening/closing body 22 blocking portion 22a Closed side airtight portion 22b Closed side operation portion 22c Closed side interlocking portion 30 Opening/closing body frame 31 Door trailing side vertical force bone 32 Door leading side vertical force bone 33 Upper side horizontal force bone 34 Lower side horizontal force bone 34a Outdoor lower side horizontal force bone 34b Indoor lower side horizontal force bone 34c First lower side horizontal force bone piece 34d Second lower side horizontal force bone piece 34e Third lower side horizontal force bone piece 34g Concave portion 35 Intermediate vertical force bone 36a Central piece 36b Outdoor side piece 36c Indoor side piece 40a Outdoor side surface material 40b Indoor side surface material 41 Door leading side joint portion 42 Upper side joint portion 43 Prospect side portion 44 Prospect side portion 45 Closed side opening 50 Hinge portion 60 First movement limiting portion 61 First lock body 61a First body side storage portion 61b First outdoor side operation portion 61c First indoor side operation portion 61d First engagement portion 61e First body side insertion opening 62 First lock receiving portion 62a First receiving side storage portion 62b First engaged portion 62c First receiving side insertion opening 70 Second movement limiting portion 70a One side second movement limiting portion 70b Other side second movement limiting portion 71 Second lock body 71a Second body side storage portion 71b Second engagement portion 71c Second body side insertion opening 72 Second lock receiving portion 72a Second receiving side storage portion 72b Second engaged portion 72c Second receiving side insertion opening 81 First visible surface side heat shielding portion 82 First outdoor side heat shielding portion 83 First indoor side heat shielding portion 84 First external thermal expansion fireproof member 91 Second outdoor heat shield section 92 Second indoor heat shield section 100 Surface side heat shield section 101 First surface side heat shield section 101a Outdoor first surface side heat shield section 101b Indoor first surface side heat shield section 102 Second surface side heat shield section 102a Outdoor second surface side heat shield section 102b Indoor second surface side heat shield section 103 Third surface side heat shield section 110 Blocking side heat shield section 111 Outdoor blocking side heat shield section 112 Indoor blocking side heat shield section 120 Support side heat shield section D1 First distance D2 Second distance D3 Third distance G1 First gap G2 Second gap LP1 First limiting position LP2 Second limiting position PG Projected surface side gap

Claims (4)

An opening and closing device having at least one opening and closing body for opening and closing an opening of a building,
A first movement limiting means for limiting movement of the at least one opening/closing body in a fully closed state in which the opening is fully closed by the at least one opening/closing body, the first movement limiting means being located on the door end side in the fully closed state;
A second movement limiting means for limiting the movement of the at least one opening/closing body in the fully closed state, the second movement limiting means being located outside the first movement limiting means in a facing direction perpendicular to the direction from the door end side to the door tail side in the fully closed state,
The first movement limiting means and the second movement limiting means are configured so that the movement of the at least one opening/closing body can be limited by the first movement limiting means and the second movement limiting means in the fully closed state regardless of whether or not the at least one opening/closing body is warped in a prospective direction,
The first movement limiting means and the second movement limiting means are configured such that, at least in a state in which the warp is not generated, a first limiting position at which the first movement limiting means can limit the at least one opening/closing body and a second limiting position at which the second movement limiting means can limit the at least one opening/closing body are different from each other in a projection direction;
The first movement limiting means is
A first lock body provided on the at least one opening/closing body;
a first lock receiving portion provided on a frame member that is located on the first lock main body side among frame members that constitute a frame provided on the periphery of the opening, the first lock receiving portion having a first engaged portion that engages with a first engaging portion that constitutes the first lock main body,
The second movement limiting means is
A second lock body provided on the at least one opening/closing body;
a second lock receiving portion provided on a frame material located on the first lock body side, the second lock receiving portion having a second engaged portion that engages with a second engaging portion constituting the second lock body,
the first limiting position is a position where the first engaging portion and the first engaged portion are engaged with each other in the fully closed state, and the second limiting position is a position where the second engaging portion and the second engaged portion are engaged with each other in the fully closed state,
The first lock body is configured so that the first engagement portion is located a first distance away from a front surface located on the outside of the front direction of the at least one opening/closing body toward the inside of the front direction,
The first lock receiving portion is configured so that the first engaged portion is located a second distance inward in the projection direction from a mating surface located on the outer side in the projection direction of the frame material located on the first lock main body side,
The second lock body is configured so that the second engagement portion is located at the first distance from the front surface toward the inside in the front direction,
The second lock receiving portion is configured so that the second engaged portion is located a third distance away from the mating surface toward the inside in the projection direction, the third distance being a distance shorter than the second distance.
Switchgear. The second movement limiting means is provided in plurality,
The plurality of second movement restricting means include
a one-side second movement limiting means located on one outer side in the front direction relative to the first movement limiting means in the fully closed state;
and an other-side second movement limiting means located on the other outer side in the viewing direction than the first movement limiting means in the fully closed state.
The opening and closing device according to claim 1 . a linking means for linking the restriction on the movement of the at least one opening-and-closing body by the first movement limiting means with the restriction on the movement of the at least one opening-and-closing body by the second movement limiting means, and for linking the release of the restriction on the movement of the at least one opening-and-closing body by the first movement limiting means with the release of the restriction on the movement of the at least one opening-and-closing body by the second movement limiting means,
The opening and closing device according to claim 1 or 2. The opening and closing device is a single-wing hinged door,
The second lock body is configured so that the second engagement portion is located in the closing direction further toward the first limit position in the fully closed state, and/or
The second lock receiving portion is configured so that the second engaged portion is located on the opening direction side of the first restricted position in the fully closed state.
The opening and closing device according to any one of claims 1 to 3.

Images