Double hinged door

Abstract

To introduce a shiplap structure in a double hinged door in which a front opening door and a rear opening door are not limited.SOLUTION: In a double hinged door made up of a first door body 1, a second door body 2, and door frames 3 to 6: a batten 7 movable in the width direction and a mover 9 movable in the height direction are provided on the door top end portion of the first door body 1; when the first door body 1 is closed, the upper end of the mover 9 abuts on a guide surface part 260 provided on the upper frame 3 and is pushed therein, and in conjunction with the resulting downward movement of the mover 9, the batten 7 changes from a stored position to a protruding position; and when the double hinged door is in a fully closed position, the batten 7 in the protruding position covers a gap between the door top end side end surface 12 of the first door body 1 and a door top end side end surface 22 of the second door body 2. The upper end of the mover 9 is provided with a first abutment portion (guide roller 9A) made of resin or rubber, and a second abutment portion (peripheral edge 1811 of the side edge that supports the guide roller) made of metal.SELECTED DRAWING: Figure 20A

Description

[Technical field]

[0001] The present invention relates to a double swinging door. [Background technology]

[0002] When double-leaf doors form a fire door, a batten protruding from one door body overlaps the visible surface of the other door body at the joint when in a fully closed position, covering the gap between the leading end surfaces of the one door body and the other door body, forming a so-called interlocking structure (see the upper diagram of FIG. 26). Patent Document 1 discloses a similar interlocking structure. In a double-leaf door with a batten, the order of opening and closing the door bodies is predetermined (the same applies when only one door body has a batten). In the embodiment shown in the upper diagram of FIG. 26, for example, when the door body is rotated downward to the open position, the right door body is a front-opening door and the left door body is a rear-opening door.

[0003] On the other hand, double-leaf doors installed in concert halls, movie theaters, theaters, etc. are doors that can be opened from either door body (see the lower diagram of Figure 26). In the embodiment shown in the lower diagram of Figure 26, for example, when the door bodies are rotated downward to assume the open position, either the right door body or the left door body can be opened first and closed later.

[0004] There is a demand for double-wing doors installed in concert halls, cinemas, theatres, etc. to function as fire doors, and it has been decided that the structure of the fire protection equipment for double-wing doors should be a double-hinged structure. [Patent Document 1] Patent Publication No. 2016-94705 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0005] The present invention aims to introduce a double-leaf structure to a double-leaf door, not limited to a front-opening door or a rear-opening door. [Means for solving the problem]

[0006] The technical means adopted in the present invention to solve such problems are as follows: In a double-leaf door consisting of a first door body, a second door body, and a door frame, A batten movable in the width direction of the first door body and an actuator movable in the height direction of the first door body are provided at the door end side portion of the first door body, A guide surface is formed on the upper frame of the door body at least above the movement path of the door end side portion of the first door body, When the first door body is closed, the upper end of the actuator comes into contact with the guide surface and is pushed in, so that the actuator body moves downward, and the batten changes from the stored position to the protruding position, When the double-leaf doors are in a fully closed position, the upper end of the actuation body abuts against the guide surface, thereby maintaining the protruding position of the batten, and the batten in the protruding position covers the gap between the door end surface of the first door body and the door end surface of the second door body. It has double doors.

[0007] In one embodiment, the upper end of the actuator includes a first contact portion made of resin or rubber and a second contact portion made of metal, When the double swing door is in a fully closed position, the first contact portion contacts the guide surface, thereby maintaining the protruding position of the batten, When the first contact portion disappears, the second contact portion contacts the guide surface, thereby maintaining the protruding position of the batten. In one embodiment, the second contact portion is located slightly below the first contact portion.

[0008] In one embodiment, the first contact portion is a peripheral surface of a resin guide roller, The second contact portion is a support portion of the resin guide roller. Alternatively, the two contact portions may be metal rollers located inside the resin guide roller. Specifically, the guide roller is composed of a large-diameter resin guide roller and an inner small-diameter metal roller, and when the resin guide roller melts, the inner metal roller becomes exposed.

[0009] In one embodiment, the support portion is located near the inner side of the circumferential surface of the resin guide roller. In one embodiment, the resin guide roller is supported by a metal side, The peripheral edge of the side edge is located near the inner side of the peripheral surface of the resin guide roller, and forms the second contact portion. In the embodiment described below, the resin roller is supported by a pair of metal side edges, but it may be supported by a single metal side edge.

[0010] In one embodiment, the actuation body includes a main body extending in a height direction and an upper end element provided at an upper end portion of the main body so as to be adjustable in height; The upper end of the upper end element is adapted to abut against the guide surface.

[0011] In one embodiment, the double swing door is rotated from a closed position to a first side to be opened, and rotated from an open position to a second side to be closed, The guide surface is a downwardly inclined surface extending from the first side to the second side. In one embodiment, when the double swinging doors are in a fully closed position, the actuating body is biased upward. Effect of the Invention

[0012] In the present invention, in a double-leaf door consisting of a first door body and a second door body, a batten that is movable in the width direction of the first door body is provided at the door-front portion of the first door body, and when the first door body is closed, the upper end of the operating body abuts against a guide surface provided on the upper frame and is pushed in, causing the operating body to move downward, and in conjunction with this, the batten changes from a stored position to a protruding position, and a joint structure can be formed at the joint between the first door body and the second door body when the opening is fully closed.

[0013] The upper end of the actuator has a first contact portion made of resin or rubber and a second contact portion made of metal, When the double swing door is in a fully closed position, the first contact portion contacts the guide surface, thereby maintaining the protruding position of the batten, In the event that the first abutment portion disappears, the second abutment portion abuts against the guide surface, thereby maintaining the protruding position of the batten. This reduces the impact noise when the first abutment portion abuts against the guide surface, and even if the first abutment portion melts and disappears due to the heat of a fire, the second abutment portion abuts against the guide surface, thereby restricting the upward movement of the operating body, and the protruding position of the batten can be maintained, thereby continuing to form the interlocking structure. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is a front view of the double swinging door according to the embodiment. [Diagram 2] FIG. 2 is a vertical cross-sectional view of the double swinging door according to the present embodiment. [Diagram 3] This is a cross-sectional view of a double-leaf door according to this embodiment, and a partially enlarged view of the joint portion. [Figure 4] FIG. 2 is an overall view of the batten unit according to the present embodiment. [Diagram 5] FIG. 2 is a plan view of the batten unit according to the present embodiment. [Figure 6] 13 is a plan view illustrating the installation of the batten unit and cover according to the present embodiment. FIG. [Figure 7] A side view illustrating the installation of the batten unit and cover according to this embodiment. [Figure 8] FIG. 5 is a partial enlarged view of the upper portion of FIG. [Figure 9] FIG. 5 is a partially enlarged view of the intermediate portion of FIG. [Figure 10] FIG. 5 is a partial enlarged view of the lower portion of FIG. [Figure 11] 1 is a diagram showing the main body of the actuation body according to the present embodiment and a back plate used to attach the upper end element according to the present embodiment to the main body. FIG. [Figure 12]FIG. 4 is a diagram showing an upper end element according to the present embodiment. [Figure 13] This figure shows the operation of a link mechanism consisting of a slat, an actuator, and a link plate in this embodiment. In the left figure, the slat is in a stored position and the actuator is in an upward moving position. In the right figure, the slat is in a protruding position and the actuator is in a downward moving position. In the middle figure, the slat and the actuator are in an intermediate position between the stored position and the protruding position. [Figure 14] Three arrow views of the left figure in Figure 13 are shown (see the center figure for the position of the arrows). [Figure 15] 13. The three arrow views of the middle figure in FIG. [Figure 16] Three arrow views of the right figure in Figure 13 are shown (see the center figure for the position of the arrows). [Figure 17] 11A and 11B are diagrams illustrating guide surfaces formed on the upper frame. [Figure 18] FIG. 4 is a diagram showing a guide plate according to the embodiment. [Figure 19] In the double-swing door according to this embodiment, the second door body is in a closed position, and the first door body is in a position approaching the closed state (the same applies to the initial position of opening from the closed position). [Figure 20] 1 shows the fully closed position of the double swinging door according to this embodiment. [Figure 20A] (A) shows the state in which the guide roller abuts the guide surface when the double-leaf doors are in the fully closed position, and (B) shows the state in which the guide roller has disappeared due to the heat of a fire from the position of (A). [Figure 21] This figure shows the initial contact of the guide roller at the upper end of the actuator in this embodiment with the guide surface when the first door body is closed. The left figure shows the form in which the guide roller is positioned directly above the actuator, and the right figure shows the form in which the guide roller is brought out in the closing direction relative to the actuator. [Figure 22] This figure shows the contact between the guide roller at the upper end of the actuator and the guide surface when the first door body is in the fully closed position from the state in Figure 21. The left figure shows the state in which the guide roller is located directly above the actuator, and the right figure shows the state in which the guide roller is brought out in the closing direction relative to the actuator. [Figure 23]1 is a plan view showing the movement trajectory of the tip of the batten of the first door body, illustrating the positional relationship of the tip of the batten with respect to the inclined surface of the door-end portion of the second door body. FIG. [Figure 24] FIG. 11 is a front view of a double swinging door, illustrating another embodiment of the movable siding. [Diagram 25] FIG. 11 is a cross-sectional view of a double-leaf door, illustrating another embodiment of the movable siding. [Figure 25A] 13A and 13B are diagrams illustrating still another embodiment of the movable panel. [Figure 26] The upper figure shows the joint part of a conventional double-leaf fire door, and the lower figure shows the joint part of a conventional double-leaf door (including but not limited to front-opening and rear-opening doors) used in theaters, etc. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] [A] Overall structure of double swinging doors In a preferred embodiment, the double-leaf door according to the present invention is a door device for opening and closing the entrance of a concert hall, a theater, a movie theater, etc. As shown in FIG. 1, the double-leaf door according to the present invention is composed of a first door body 1 and a second door body 2, and the frame forming the entrance (opening) is made up of an upper frame 3, left and right vertical frames 4 and 5, and a lower frame 6, and is adapted to open and close the entrance (opening). The end of the first door body 1 is rotatably connected to the vertical frame 4, and the end of the second door body 2 is rotatably connected to the vertical frame 5, and both the first door body 1 and the second door body 2 can be opened to the outside of the room, and when the opening is fully closed, a joint is formed at the end of the first door body 1 and the end of the second door body 2 (FIG. 3). The hollow parts of the first door body 1, the second door body 2, the upper frame 3, the left and right vertical frames 4 and 5, and the lower frame 6 are filled with glass wool GW.

[0016] In Fig. 2, the left side is the outside and the right side is the inside, and in Fig. 3, the lower side is the outside and the upper side is the inside. In the double-leaf door according to this embodiment, there is no latch mechanism at the joining portion of the first door body 1 and the second door body 2, and there is no order in which the first door body 1 and the second door body 2 are opened or closed. In other words, the double-leaf door according to this embodiment is a door that is not limited to a front-opening door or a rear-opening door. A movable batten 7 is provided on the interior part of the door end side of the first door body 1, and when the first door body 1 is in a fully closed position, the movable batten 7 is in a protruding position. When the first door body 1 in a fully closed position is initially opened, the movable batten 7 retreats or retreats from the protruding position, so that the first door body 1 can be opened relative to the second door body 2 in a fully closed position. At the joint when the opening is fully closed, the movable panel 7 of the first door body 1 is located on the indoor side, so it does not prevent the second door body 2 from opening to the outdoor side with the first door body 1 in the fully closed position.

[0017] [B] Double swing door body [B-1] First door The first door body 1 has an exterior facing surface 10, an interior facing surface 11, a door leading end surface 12, a door trailing end surface 13, an upper surface 14, and a lower surface 15. The door leading side portion of the interior facing surface 11 of the first door body 1 has an L-shaped recess 112 in a plan view from the leading surface 110 and the facing surface 111, which extends over the entire height of the first door body 1, and a batten unit 7' equipped with a movable batten 7 is attached to the recess 112. The configuration of the batten unit 7' will be described later.

[0018] The trailing edge 13 of the first door body 1 is rotatably attached to the vertical frame 4, and when the double-leaf door is in a fully closed position, the leading edge portion of the first door body 1 forms a mating portion with the leading edge portion of the second door body 2. A protrusion 120 that protrudes into the room in the projection direction is formed on the indoor side of the leading edge end face 12 of the first door body 1, and the protrusion 120 protrudes into the room further than the visible surface 111 of the recess 112, but the protruding dimension is smaller than the projection dimension of the recess 112. A recess 121 is formed on the outdoor side of the leading edge end face 12, and an airtight material 122 is provided in the recess 121.

[0019] The leading edge portion of the first door body 1 consists of a leading edge end face 12, a protrusion 120 on the indoor side of the leading edge end face 12, a batten 7 located on the indoor side of the protrusion 120 and capable of protruding beyond the leading edge end face 12, a recess 121 and airtight material 122 on the outdoor side of the leading edge end face 12, and the tip of a cover 83 (described later).

[0020] The top surface 14 of the first door body 1 is composed of a first top surface 140 on the outdoor side, a second top surface 141 on the indoor side at a height position lower than the first top surface 140, and an intermediate visible surface 142 connecting the indoor side end of the first top surface 140 and the outdoor side end of the second top surface 141. A lower tight (lower airtight device) 150 is stored in the bottom surface 15 of the first door body 1, and when the opening is closed, the lower tight 150 protrudes downward and abuts against the bottom frame 6. A locking rod 151 constituting a locking device is provided on the outdoor side and door end part of the bottom surface 15, and when the opening is fully closed, the locking rod 151 protrudes downward and engages with a locking hole formed in the bottom frame 6 to enter a locked state.

[0021] [B-2] Second door The second door body 2 has an exterior facing surface 20, an interior facing surface 21, a leading edge surface 22, a trailing edge surface 23, an upper surface 24, and a lower surface 25. The trailing edge surface 23 of the second door body 2 is rotatably attached to the vertical frame 5, and when the double-leaf door is in a fully closed position, the leading edge portion of the second door body 2 forms a joint with the leading edge portion of the first door body 1. An inclined surface 220 is formed on the interior side of the leading edge surface 22 of the second door body 2, and is adapted to receive the batten 7 of the first door body 1 when the opening is fully closed. A recess 221 is formed on the exterior side of the leading edge surface 22, and an airtight material 222 is provided in the recess 221.

[0022] The door front side portion of the second door body 2 consists of a door front side end face 22, an inclined surface 220 on the indoor side of the door front side end face 22, a recess 221 on the outdoor side of the door front side end face 22, and an airtight material 222.

[0023] The top surface 24 of the second door body 2 is composed of a first top surface 240 on the outside of the room, a second top surface 241 on the inside of the room that is at a lower height than the first top surface 240, and an intermediate visible surface 242 that connects the inside end of the first top surface 240 and the outside end of the second top surface 241. A lower tight (lower airtight device) 250 is stored in the bottom surface 25 of the second door body 2, and when the opening is closed, the lower tight 250 protrudes downward and abuts against the bottom frame 6. A locking rod 251 that constitutes a locking device is provided on the outdoor side and door end part of the bottom surface 25, and when the opening is fully closed, the locking rod 251 protrudes downward and engages with a locking hole formed in the bottom frame 6, thereby entering a locked state.

[0024] [B-3] Joint section when the opening is fully closed As shown in FIG. 3, when the double-leaf door is in a fully closed position, the end surface 12 of the first door body 1 and the end surface 22 of the second door body 2 face each other through a gap, and the airtight material 122 located on the outdoor side of the end surface 12 of the first door body 1 and the airtight material 222 located on the outdoor side of the end surface 22 of the second door body 2 abut each other in the height direction, thereby blocking the outdoor part of the gap. In addition, the end surface side end of the lower part 150 at the lower end of the first door body 1 abuts on the end surface side of the lower part 250 at the lower end of the second door body 2. At the joint part when the opening is fully closed, the airtight material 122 and the airtight material 222 are in close contact with each other over the entire height of the first door body 1 and the second door body 2, and the lower part 150 and the lower part 250 are in close contact with each other at the lower ends of the first door body 1 and the second door body 2, thereby ensuring soundproofing (sound insulation) performance.

[0025] When the opening is fully closed, the batten 7 located on the indoor side of the leading edge 12 of the first door body 1 protrudes toward the inclined surface 220 formed on the indoor side of the leading edge 22 of the second door body 2 so as to cross the indoor side portion of the gap. In a plan view, a straight line connecting the tip of the batten 7 in the protruding position and the outdoor side end of the leading edge 12 of the first door body 1 extends so as to cross the leading edge portion of the second door body 2 (the corner formed by the inclined surface 220 and the leading edge 22). In this way, a so-called lapidary structure is formed at the joint when the opening is fully closed, and no gap is formed that passes directly between the indoor side and the outdoor side.

[0026] In this embodiment, the gap dimension α between the tip of the batten 7 and the inclined surface 220 is set to prevent fingers from getting caught. As shown in Fig. 23, when the first door body 1 is initially opened from the fully closed position of the double-leaf door, the batten 7 in the protruding position moves to the stored position in conjunction with the rotation of the first door body 1, causing the tip of the batten 7 to move back little by little, but at this time, the gap dimension α between the tip of the batten 7 and the inclined surface 220 is substantially maintained.

[0027] [C] Meatboard unit [C-1] Overall configuration As shown in Figs. 4 to 7, the movable siding 7 according to this embodiment is provided as a siding unit 7'. Figs. 8 to 10 are partial enlarged views (upper part, middle part, lower part) of Fig. 4, respectively. The siding unit 7' according to this embodiment includes the movable siding 7, a case 8, and an actuator 9, and is provided in a recessed portion 112 formed on the interior side and the door end side of the first door body 1. The actuator 9 and the movable siding 7 are connected via a pair of link plates 16 at multiple points in the height direction, and the movable siding 7 reciprocates in the width direction (opening width direction) of the first door body 1 in conjunction with the rising and lowering of the actuator 9 relative to the case 8 fixed to the recessed portion 112 of the first door body 1. In this embodiment, the link plate 16 rotates in a first direction in conjunction with the downward movement of the actuator 9, causing the movable siding 7 to protrude, and the link plate 16 rotates in a second direction in conjunction with the upward movement of the actuator 9, causing the movable siding 7 to retreat or retreat. With the batten unit 7' attached to the first door body 1, when the batten 7 is in the stored position, the tip of the batten 7 does not protrude from the leading end face 12 of the first door body 1, and when the batten 7 is in the protruding position, the batten 7 protrudes from the leading end face 12 of the first door body 1. It will be understood by those skilled in the art that when the first door body and the second door body are configured to open to the indoor side, the batten unit 7' is provided on the outdoor side.

[0028] As shown in Figures 4 and 9, the actuator 9 and the case 8 are connected by a spring 17 that can expand and contract in the vertical direction. The upper end of the spring 17 is connected to the case 8 and the lower end of the spring 17 is connected to the actuator 9. As the actuator 9 moves downward, the spring 17 extends downward, storing force in the expansion and contraction direction. When the movable slat 7 is in the protruding position, the actuator 9 is biased upward (in the direction in which the slat 7 in the protruding position retracts).

[0029] Fig. 13 shows the operation of the batten unit 7' according to this embodiment, with the left diagram showing the actuating body 9 in an upward movement position, the movable batten 7 in a stored position, and the spring 17 in a normal length, the right diagram showing the actuating body 9 in a downward movement position, the movable batten 7 in a protruding position, and the spring 17 in an extended position extended from its normal length (fully closed position of the first door body 1), and the center diagram showing intermediate positions of the actuating body 9, movable batten 7, and spring 17 between the left diagram and the right diagram. Fig. 14 is a view seen from each arrow in the left diagram of Fig. 13, Fig. 15 is a view seen from each arrow in the center diagram of Fig. 13, and Fig. 16 is a view seen from each arrow in the right diagram of Fig. 13.

[0030] As shown in Figures 17, 19 and 20, the upper frame 3 of the door frame has a guide surface (in this embodiment, an inclined guide surface portion 260) located in the path of movement of the abutment portion (in this embodiment, a guide roller 9A) at the upper end of the actuator 9. When the first door body 1 is closed, the guide roller 9A abuts against the guide surface portion 260 and is pushed in, causing the actuator 9 to move downward, changing the batten 7 from the stored position to the protruding position. At this time, the actuator 9 is biased upward by the spring 17, and when the first door body 1 is opened, the guide roller 9A is guided by the guide surface and protrudes upward as the actuator 9 moves upward, changing the batten 7 from the protruding position to the stored position.

[0031] [C-2] Case The case 8 is a long member having a U-shape or C-shape in cross section from the first visible surface portion 80, the second visible surface portion 81, and the visible surface portion 82, and extends in the height direction of the first door body 1. The visible surface portion 82 is placed close to and facing the visible surface 110 of the recessed portion 112, and the second visible surface portion 81 is fixed to the visible surface 111 of the recessed portion 112, so that the case 8 is stored in the recessed portion 112. The visible dimension of the case 8 is slightly smaller than the visible dimension of the recessed portion 112, and when the case 8 is stored and fixed in the recessed portion 112, the first visible surface portion 80 is located slightly closer to the visible surface 111 side than the indoor side visible surface 11 of the first door body 1. By fixing the cover 83 to the first visible surface portion 80, the visible edge 830 of the cover 83 and the indoor side visible surface 11 of the first door body 1 become flush with each other. The case 8 in this embodiment is made up of two components having an L-shape in cross section, with the projected edges and visible edges connected to form a projected surface portion 82, and the visible edges of each component respectively form a first visible surface portion 80 and a second visible surface portion 81.

[0032] Between the first and second facing surfaces 80 and 81, a first cylinder 84 having a female thread formed on its inner peripheral surface is provided at a distance in the height direction, and the first and second facing surfaces 80 and 81 are each connected to the first cylinder 84 by a screw 840. The first cylinder 84 functions as a spacer, and is adapted to maintain the projected dimensions of the internal space (storage space for the operating body 9 and the batten 7) formed between the first and second facing surfaces 80 and 81.

[0033] A plurality of second cylinders 85 with insertion holes formed therein are provided at intervals in the height direction between the first visible surface portion 80 and the second visible surface portion 81. The insertion holes of the second cylinders 85 form holes penetrating the case 8 (first visible surface portion 80, second visible surface portion 81), and the batten unit 7' is fixed to the visible surface 111 of the recessed portion 112 of the first door body 1 by screws 86 passing through the holes (FIGS. 6 and 17).

[0034] A plurality of screw holes 87 are formed in the first visible surface portion 80 of the case 8 at intervals in the height direction, and the cover 83 is attached to the first visible surface portion 80 of the case 8 with screws 88. When the cover 83 is attached to the case 8, the visible edge 830 of the cover 83 and the indoor-side visible surface 11 of the first door body 1 are flush with each other. The visible edge 831 of the cover 83 is close to or in contact with the visible surface 110 of the recessed portion 112. In a plan view, the side edge of the cover 83 (the tip of the visible edge 830) is located on an extension line of the door-front end surface 12 (the protruding piece 120) of the first door body 1. The batten 7 protrudes from the gap between the tip of the visible edge 830 of the cover 83 and the tip of the protruding piece 120.

[0035] Between the first facing surface 80 and the second facing surface 81 of the case 8, there is provided a shaft portion 160 which provides a pivot point for the link plate 16. The shaft portions 160 are provided at multiple locations at intervals in the height direction. At a predetermined position in the height direction of the case 8, there is provided a connecting portion 170 to which the upper end of the spring 17 is connected.

[0036] In the batten unit 7', the actuator 9 is arranged to be able to move up and down in the internal space of the case 8 (the space surrounded by the first visible surface portion 80, the second visible surface portion 81, and the visible surface portion 82), but at the upper end portion of the case 8, the visible surface portion 82 and the base end portions (portions on the visible surface portion 82 side) of the first visible surface portion 80 and the second visible surface portion 81 are cut out, so that in the batten unit 7', the upper end portion (upper end element 18 and guide roller 9A) of the main body 9' of the actuator 9 is exposed above the case 8.

[0037] [C-2] Link plate In the batten unit 7' according to this embodiment, the actuator 9 and the movable batten 7 are linked via a link plate 16 rotatably fixed to the case 8. In this embodiment, a pair of link plates 16 are rotatably provided at intervals at multiple locations in the height direction of the case 8. The pair of link plates 16 are rotatably provided with respect to a shaft portion 160 provided between the first visible surface portion 80 and the second visible surface portion 81, and the pair of link plates 16 rotate with the shaft portion 160 as a rotation fulcrum.

[0038] The actuator 9 and the movable batten 7 are rotatably connected to the pair of link plates 16. Each link plate 16 is a pair of roughly triangular plate-like bodies, with a first shaft 161 provided at a first corner of the link plate 16 and a second shaft 162 provided at a second corner. The actuator 9 and link plate 16 are rotatably connected at the first shaft 161, and the movable batten 7 and link plate 16 are rotatably connected at the second shaft 162. A link mechanism is formed by the movable batten 7, the actuator 9, and the link plate 16, and the movable batten 7 reciprocates left and right in conjunction with the up and down movement of the actuator 9.

[0039] [C-3] Working body The actuator 9 is an elongated member extending in the height direction of the batten unit 7' and has a guide roller 9A at its upper end. As shown in FIG. 11, the actuator 9 has a first visible edge 90, a second visible edge 91, and a visible edge 92, and has a U-shaped or C-shaped cross section, and has a main body 9' which is an elongated member extending in the height direction. A pair of bases 93 protrude from the pair of first visible edges 90 and second visible edges 91 of the main body 9' at multiple positions in the height direction, and the bases 93 and the first corners of the link plate 16 are rotatably connected by a first shaft 161, and the actuator 9 is supported in the case 8 so as to be movable up and down. In FIG. 11, holes 902 and 912 in the first visible edge 90 and second visible edge 91 of the main body 9' are holes for attaching the bases 93.

[0040] A connecting portion 171 to which the lower end of spring 17 is connected is provided at a predetermined position in the height direction of actuating body 9, and the lower end of spring 17, whose upper end is connected to case 8, is connected to connecting portion 171. The upper end of spring 17 is connected to case 8, and the lower end of spring 17 is connected to actuating body 9, and as actuating body 9 moves downward, spring 17 expands downward, storing force in the expansion / contraction direction, so that when movable batten 7 is in the protruding position, actuating body 9 is urged upward (in the direction in which batten 7 in the protruding position retracts). Fixing holes for connecting portion 171 are omitted in Figure 11.

[0041] The upper end of the actuator 9 is provided with a guide roller 9A, which is an abutment part that abuts against the guide surface and is guided by the guide surface. In the batten unit 7', the guide roller 9A (at least the abutment surface) is located above the upper end of the case 8 (FIGS. 8 and 13), and the contact surface of the guide roller 9A with the guide surface is located on the indoor side of a vertical plane passing through the first visible surface portion 80 of the case 8 (FIG. 5). In this embodiment, the guide roller 9A is provided at the upper end of an upper end element 18 that is detachably attached to the upper end portion of the main body 9' of the actuator 9. The upper end element 18 according to this embodiment is provided so that the height position is adjustable with respect to the main body 9' of the actuator 9, and the height position of the abutment surface of the guide roller 9A at the upper end of the upper end element 18 can be adjusted depending on the construction conditions at the installation site.

[0042] 12, the upper end element 18 is an elongated member having a U-shape or C-shape in cross section, which is made up of a pair of side walls 180, 181 and a bottom wall 182 connecting the pair of side walls 180, 181, and three notches 1820 are formed in the height direction in the bottom wall 182. A front wall 183 is formed at the tip of the pair of side walls 180, 181 by fixing (welding) a plate to face the bottom wall 182, and two holes 1830 are formed in the front wall 183 in the height direction.

[0043] As shown in Fig. 11, two vertically long holes 910 (900) are formed at the upper end portions of the first and second visible edges 90 and 91 of the actuating body 9. A round hole 911 (901) is formed between the vertically long holes 910 (900) at the first and second visible edges 90 and 91 (note that in this embodiment, only the round hole 901 is used when fixing the screw 185). The upper end element 18 is inserted into the upper end portion (space surrounded by the first and second visible edges 90, 91, and 92) of the main body 9' of the actuating body 9, and the bottom wall 182 abuts against the inner surface of the second visible edge 91, and the front wall 183 abuts against the inner surface of the first visible edge 90.

[0044] The hole 1830 in the front wall 183 of the upper end element 18 corresponds to the vertically elongated hole 910 (900), and after adjusting the height of the upper end element 18 relative to the main body 9', it is fixed with a screw 184. At this time, a back plate 186 is provided on the outer surface of the second visible side 91, and the shaft portion of the screw 184 protruding from the notch portion 1820 of the bottom wall 182 is screwed into a screw hole 1860 of the back plate 186. Furthermore, by fixing a screw 185 through a round hole 901 in the first visible side 90, the upper end element 18 adjusted to a predetermined height position is fixed to the main body 9' of the actuator 9.

[0045] The upper ends of the pair of side walls 180, 181 of the upper end element 18 are extensions 1800, 1810 that protrude upward from the upper end of the bottom wall 182, and a guide roller 9A is provided between the opposing extensions 1800, 1810. In this embodiment, the pair of extensions 1800, 1810 extend in an upward inclined manner in a direction away from the bottom wall 182, and a part of the guide roller 9A protrudes beyond the front wall 183. When the batten unit 7' is provided in the recessed portion 112 of the first door body 1, the guide roller 9A at the upper end of the actuator 9 protrudes in a protruding manner in the closing direction. In the upper end element 18 according to this embodiment, the pair of side walls 180, 181 at the upper ends are made of metal, while the bottom wall 182 is made of resin. The periphery 1811 (see FIG. 12) of the upper part of the pair of sides (pair of extensions 1800, 1810) supporting the guide roller 9A is an arc-shaped edge (slightly smaller in diameter than the guide roller 9A) located close to the circumferential surface of the guide roller 9A (near the inside), and if the guide roller 9A melts due to heat during a fire, the periphery 1811 of the upper part of the pair of extensions 1800, 1810 will abut against the guide surface 260, thereby maintaining the protruding position of the batten 7 (FIG. 20A(B)). In the illustrated embodiment, the circumferential surface of the guide roller 9A forms the abutment part, but the abutment part is not limited to a rotating body (roller) and may be a curved (e.g., ball-shaped) surface made of a material with good slipperiness.

[0046] [C-4] batten The movable batten 7 is composed of a plate-shaped portion 70 having a generally vertically rectangular shape forming the main body of the batten 7, and a plurality of bearing portions 71 provided at intervals in the height direction on the base end side in the width direction of the plate-shaped portion 70. The bearing portions 71 are U-shaped or C-shaped in cross section, and a second shaft 162 is provided between the sides of the bearing portion 71, and second corner portions of a pair of link plates 16 are rotatably connected to the second shaft 162. A link mechanism is formed of the batten 7, the actuator 9, and the link plate 16, and the batten 7 can reciprocate in the width direction of the batten 7 in conjunction with the up and down movement of the actuator 9. When the batten unit 7' is attached to the first door body 1, the batten 7 can reciprocate in the width direction of the first door body 1, and can take a stored position in which it is located within the recessed portion 112 of the first door body 1 and a protruding position in which it protrudes beyond the door-front end surface 12 of the first door body 1. The batten 7 according to this embodiment reciprocates in the width direction of the first door body 1, and is contained within the thickness of the first door body 1 when the batten 7 moves, and in this embodiment, the batten 7 is concealed by the cover 83, and the design is also good. In contrast, when a rotatable batten is used, the batten is located outside the door end part of the visible surface of the door body, which may cause a risk of unexpected contact, a possibility of access from outside (tampering), and an issue with the design.

[0047] [D] Guide mechanism for actuator [D-1] Overall composition of the upper frame In this embodiment, the guide surface on which the guide roller 9A at the upper end of the actuation body 9 comes into contact and is guided is provided on the upper frame 3. First, the overall configuration of the upper frame 3 will be described. As shown in FIG. 2, the upper frame 3 includes an exterior facing surface 30, an interior facing surface 31, a first lower surface 32 on the exterior side, a middle second lower surface 33 located below the first lower surface 32, a third lower surface 34 on the interior side located below the second lower surface 33, an intermediate facing surface 35 connecting the interior end of the first lower surface 32 and the exterior end of the second lower surface 33, and a groove portion 36 formed between the interior end of the second lower surface 33 and the exterior end of the third lower surface 34, and an airtight material 37 is fitted into the groove portion 36.

[0048] When the opening is fully closed, the first upper surface 140 (first upper surface 240) of the first door body 1 (second door body 2) faces the first lower surface 32 of the upper frame 3, the second upper surface 141 (second upper surface 241) faces the second lower surface 33, the intermediate facing surface 142 (intermediate facing surface 242) faces the intermediate facing surface 35, and the upper end portion of the indoor facing surface 11 (indoor facing surface 21) abuts the airtight material 37.

[0049] [D-2] Guide surface In this embodiment, the guide surface on which the guide roller 9A at the upper end of the actuation body 9 comes into contact and is guided is formed of a metal guide plate 26. As shown in FIG. 17, a portion located above the door-end side portion of the first door body 1 is cut out in the lower surface of the upper frame 3, and the guide plate 26 is fixed so as to close the cutout portion. More specifically, in the length direction (opening width direction) of the upper frame 3, a portion of the intermediate visible surface 35 and the second lower surface 33 (a portion located on the room side of the portion forming the groove portion 36) is cut out in a portion located above the door-end side portion of the first door body 1 in the fully closed position. A back plate 26' is fixed (welded) so as to close the cutout portion, and the guide plate 26 is attached to the back plate 26'.

[0050] 18, guide plate 26 is composed of an inclined guide surface portion 260, a first horizontal portion 261 on the upper side of guide surface portion 260, a second horizontal portion 262 on the lower side of guide surface portion 260, and vertical side surface portions (side walls) 263 on both ends of the width direction of the guide surface portion. Guide surface portion 260 of guide plate 26 forms a guide surface that extends in a downward inclination from the outside side to the inside side of the room. Screw insertion holes 2610, 2620 are formed in first horizontal portion 261 and second horizontal portion 262 of guide plate 26.

[0051] The back plate 26' has the same cross-sectional shape as the guide plate 26, and is composed of an inclined surface 260', a first horizontal portion 261' above the inclined surface 260', and a second horizontal portion 262' below the guide surface portion 260. The first horizontal portion 261' is fixed (welded) to the indoor side portion of the first lower surface 32, and the second horizontal portion 262' is fixed (welded) to the indoor side portion of the second lower surface 33. Screw holes are formed in the first horizontal portion 261' and the second horizontal portion 262' of the back plate 26'. The guide plate 26 is fixed with screws 264 in a state where the first horizontal portion 261 of the guide plate 26 is abutted against the first horizontal portion 261' of the back plate 26' from below, and the second horizontal portion 262 is abutted against the second horizontal portion 262' of the back plate 26' from below. The pair of side portions 263 close both ends of the cutout portion in the width direction. The guide surface portion 260 is located on the underside of the upper frame 3 on the indoor side, and when the first door body 1 is fully closed, it is located at the rear (indoor side) of the first upper surface 140 on the outdoor side of the first door body 1, and is therefore covered by the upper end portion on the outdoor side of the first door body 1 and is not noticeable.

[0052] In the double-leaf door according to this embodiment, when the first door body 1 approaches the fully closed position, the guide roller 9A at the upper end of the actuating body 9 comes into contact with the guide surface and is guided, so that the actuating body 9 moves downward, and the batten 7 moves from the stored position to the protruding position in conjunction with this. However, if the guide surface becomes a steeper slope, the impact when the guide roller 9A contacts the guide surface becomes larger, and there is a concern that the load on the batten mechanism and the generation of collision noise will occur. Therefore, it is desirable to set the inclination angle of the guide surface portion 260 as gently as possible with respect to the horizontal plane. In the fitting according to this embodiment, it is desirable that the inclination angle of the guide surface portion 260 is 30 degrees or less. In addition, as a means for reducing the collision sound between the upper end (guide roller 9A) of the actuating body 9 and the guide surface portion 260, a flame-retardant elastic material may be attached to the guide surface portion 260.

[0053] In this embodiment, a guide surface with a gentler inclination angle is provided by forming a guide surface (guide surface portion 260) that extends from the upper end of the intermediate visible surface 35 of the upper frame 3 to a portion of the second lower surface 33 (a portion corresponding to the airtight material 37 provided in the groove portion 36). As shown in Fig. 17 etc., in a side view, the lower end position of the guide surface portion 260 and the position of the tip 370 of the airtight material 37 are approximately aligned. Also, by positioning the side surface portions 263 at both ends in the width direction of the guide surface, the sides of the cutout portion are blocked.

[0054] [D-3] Displacement of the actuator The amount of movement of the batten 7 in this embodiment is determined by the amount of movement of the actuator 9; the greater the amount of movement (downward movement distance) of the actuator 9, the greater the amount of movement of the batten 7 in the protruding direction. The amount of movement of the actuator 9 in this embodiment, i.e., the distance (difference) between the upward movement position and the downward movement position, is determined by the height dimension or height difference of the guide surface (guide surface portion 260) (the vertical distance H between the upper end contact point P1 of the guide roller 9A and the guide surface portion 260, and the lower end contact point P2 of the guide roller 9A, as shown in FIG. 22).

[0055] 19 shows the state in which the second door body 2 is in the closed position and the first door body 1 is approaching the closed state in the double-swing door according to this embodiment, the batten 7 is in the stored position, the indoor half of the door-end side part of the first door body 1 faces the door-end side end face 22 of the second door body 2, and the guide roller 9A at the upper end of the actuator 9 faces the upper end of the guide surface portion 260 at a distance. When the first door body 1 rotates in the closing direction from this state, the guide roller 9A at the upper end of the actuator 9 abuts against the upper end of the guide surface portion 260, and while moving the actuator 9 downward, it is guided along the downwardly inclined guide surface portion 260, and the batten 7 in the stored position protrudes in conjunction with the downward movement of the actuator 9.

[0056] As shown in FIG. 20, when the upper end portion of the indoor facing surface 11 of the first door body 1 abuts against the airtight material 37 and the first door body 1 is in the fully closed position, the airtight material 122 of the leading end facing surface of the first door body 1 abuts against the airtight material 222 of the leading end portion of the second door body 2, the batten 7 is in a protruding position, and the tip of the batten 7 faces the inclined surface 220 of the leading end portion of the second door body 2 with a gap dimension α. ​​At this time, the guide roller 9A at the upper end of the operating body 9 abuts against the lower end portion (lower end contact point) of the guide surface portion 260, and the protruding dimension of the batten 7 is determined by the height difference when the guide roller 9A moves from the upper end portion of FIG. 19 to the lower end portion of FIG. 20 on the guide surface portion 260. Note that when the first door body 1 is in the fully closed position, the guide roller 9A abuts against or is close to the tip 370 of the airtight material 37.

[0057] The height position of the guide roller 9A relative to the upper surface of the first door body 1 will be described. The upper surface of the first door body 1 is composed of a first upper surface 140 on the outdoor side and a second upper surface 141 on the indoor side, the second upper surface 141 being located lower than the first upper surface 140, the actuating body 9 is provided on the indoor side of the door end side portion of the first door body 1, the guide roller 9A at the upper end of the actuating body 9 in the upward movement posture is located higher than the second upper surface 141, the upper end of the guide roller 9A is located at approximately the same position as or lower than the first upper surface 140 (FIG. 19), and the upper end (contact surface with the guide surface) of the guide roller 9A at the upper end of the actuating body 9 in the downward movement posture is located higher than the second upper surface 141 (FIG. 20).

[0058] Fig. 21 is a diagram showing the initial contact (upper end contact point) between the upper end of the actuating body 9 according to this embodiment and the guide surface of the guide roller 9A when the first door body 1 is closed, the left diagram showing a state in which the guide roller 9A' is located directly above the actuating body 9, and the right diagram showing a state in which the guide roller 9A is brought out in the closing direction relative to the actuating body 9. The height position L1 of the upper end contact point is the same in the left and right diagrams of Fig. 21.

[0059] Fig. 22 is a diagram showing the contact (lower end contact point) between guide rollers 9A', 9A at the upper end of the actuator 9 and the guide surface when the first door body 1 is in the fully closed position from each state in Fig. 21, the left diagram shows a form in which the guide roller 9A' is located directly above the actuator 9, and the right diagram shows a form in which the guide roller 9A is brought out in the closing direction relative to the actuator 9. In the left and right diagrams of Fig. 22, the height position of the upper end contact point is lower in the right diagram (L3) than in the left diagram (L2). In other words, the protrusion (movement) of the batten 7 in the form in the right diagram of Fig. 22 is greater than the protrusion (movement) of the batten 7 in the form in the left diagram.

[0060] Here, for guide surfaces with the same inclination angle, the longer the travel distance of the guide rollers 9A', 9A on the guide surface, the greater the movement amount (downward movement amount) of the operating body 9. In the configuration shown in the right diagrams of Figs. 21 and 22, the contact surface (contact surface with the guide surface) of the guide roller 9A is located approximately directly above the interior facing surface 11 of the first door body 1. Therefore, when the first door body 1 is in the fully closed position and the interior facing surface 11 is in contact with the airtight material 37, the guide roller 9A can reach the lower end of the inclined guide surface portion 260. In contrast, in the form shown in the left figures of Figures 21 and 22, the abutment surface of the guide roller 9A' (the surface in contact with the guide surface) is located on the outdoor side (closer to the outdoor facing surface 10) than the indoor facing surface 11 of the first door body 1, and when the first door body 1 is in the fully closed position and the indoor facing surface 11 abuts against the airtight material 37, the guide roller 9A cannot reach the lower end of the inclined guide surface portion 260.

[0061] That is, by projecting the guide roller 9A toward the room side at the upper end of the actuator 9 in a protruding manner, the guide roller 9A can be moved further downward along the guide surface when the first door body 1 moves to the fully closed position, thereby increasing the amount of downward movement of the actuator 9. The greater the amount of downward movement of the actuator 9, the greater the amount of movement of the batten 7 from the stored position to the protruding position.

[0062] [E] Operation of the batten The batten 7 according to this embodiment moves in the width direction of the first door body 1 in conjunction with the vertical movement of the actuator 9. In this embodiment, the interlocking means between the batten 7 and the actuator 9 is a link (link plate 16), and the batten 7, the actuator 9, and the link plate 16 form a link mechanism. The actuator 9 moves up and down by having the guide roller 9A at the upper end abut against a guide surface (guide surface portion 260), which is an inclined surface formed on the upper frame 3, and in this state, the guide roller 9A moves along the inclination of the guide surface as the first door body 1 rotates, gradually changing the height position of the guide roller 9A (see FIG. 13). The amount of change in the height position of the guide roller 9A is determined by the travel distance (movement length) of the guide roller 9A on the guide surface and the angle of the inclined surface.

[0063] During the closing operation (final closing operation) when the first door body 1 moves from a position close to the fully closed position to the fully closed position, the guide roller 9A is pushed downward as it moves (descending) on ​​the guide surface toward the inside of the room, causing the actuator 9 to gradually move downward, and in conjunction with the downward movement of the actuator 9, the batten 7 gradually protrudes from the stored position to the protruding position. When the first door body 1 is in the fully closed position, the actuator 9 is biased upward by the biasing force of the spring 17, and during the initial opening of the first door body 1 from the fully closed position, the guide roller 9A moves (rises) on the guide surface toward the outside of the room, causing the actuator 9 to gradually move upward, and in conjunction with the upward movement of the actuator 9, the batten 7 gradually retreats from the protruding position to the stored position.

[0064] 23 is a plan view showing the movement trajectory of the tip of the batten of the first door body, and shows the relationship between the opening / closing movement (posture) of the first door body 1 and the movement of the batten 7, and the positional relationship of the tip of the batten 7 with respect to the inclined surface 220 at the door-end side portion of the second door body. The initial opening movement of the first door body 1 will be explained in the order of the upper, middle, and lower figures of Fig. 23, and the final closing movement of the first door body 1 will be explained in the order of the lower, middle, and upper figures of Fig. 23.

[0065] In the fully closed position of the double-leaf doors, the gap dimension α between the tip of the batten 7 (in the protruding position) of the first door body 1 and the inclined surface 220 of the door leading edge portion of the second door body 2 is set to prevent fingers from being pinched. When the first door body 1 is initially opened, the batten 7 moves from the protruding position to the stored position in conjunction with the opening movement of the first door body 1, thereby preventing the tip of the batten 7 from coming into contact with the door leading edge portion of the second door body 2 in the fully closed position. At this time, the batten 7 moves gradually backward from the protruding position, so that the gap between the tip of the batten 7 of the first door body 1 and the inclined surface 220 of the second door body 2 is substantially maintained at the gap dimension α.

[0066] At the final closing of the first door body 1, the batten 7 moves from the stored position to the protruding position in conjunction with the closing operation of the first door body 1, and at this time, the batten 7 gradually moves from the stored position to the protruding position, so that the batten 7 reaches its most protruding position at the same time that the first door body 1 reaches the fully closed position. Therefore, while the first door body 1 is rotating, contact between the tip of the batten 7 and the door end side part of the second door body 2 in the fully closed position is prevented, and the gap between the tip of the batten 7 of the first door body 1 and the inclined surface 220 of the second door body 2 is substantially maintained at the gap dimension α.

[0067] [F] Maintenance of the structure during fire In this embodiment, by utilizing the gradient of the guide surface portion 260 provided on the upper frame 3, when the first door body 1 is closed, the guide roller 9A at the upper end of the actuator 9 abuts against the guide surface portion 260 and is pushed in, and the actuator 9 moves downward, and the batten 7 changes from the stored position to the protruding position. As shown in FIG. 20A(A), when the double-leaf door is in the fully closed position, the guide roller 9A at the upper end of the actuator 9 abuts against the guide surface portion 260, thereby maintaining the protruding position of the batten 7. When the opening is fully closed, the batten 7 located on the indoor side of the leading end surface 12 of the first door body 1 protrudes toward the inclined surface 220 formed on the indoor side of the leading end surface 22 of the second door body 2 so as to cross the indoor side portion of the gap between the leading end surface 12 of the first door body 1 and the leading end surface 22 of the second door body 2. In a plan view, a straight line connecting the tip of the batten 7 in the protruding position and the outdoor end of the leading edge 12 of the first door body 1 extends across the leading part of the second door body 2 (the corner formed by the inclined surface 220 and the leading edge 22). This forms a so-called clasp structure at the joint when the opening is fully closed, preventing the formation of a gap that passes directly between the indoor side and the outdoor side.

[0068] In order to reduce the impact sound when the guide roller 9A at the upper end of the actuating body 9 abuts against the guide surface portion 260 when the first door body 1 is closed, the guide roller 9A is preferably made of resin or rubber, and in this embodiment, a resin guide roller 9A is used. However, if the resin guide roller 9A melts and disappears due to the heat during a fire, the actuating body 9 will move upward by that amount, and in conjunction with the upward movement of the actuating body 9, the batten 7, which is in the protruding position, will move in the direction returning to the stored position, which may make it impossible to maintain a sufficient interlocking structure. The batten 7 is made of metal and is not affected by the heat during a fire.

[0069] In this embodiment, the peripheral edge 1811 (see Figure 12) of the upper part of a pair of side edges (a pair of extension portions 1800, 1810) that support the guide roller 9A at the upper end of the actuator 9 is an arc-shaped edge (slightly smaller in diameter than the guide roller 9A) located close to the peripheral surface of the guide roller 9A (near the inside), and if the guide roller 9A melts due to the heat of a fire, the peripheral edge 1811 of the upper part of the pair of extension portions 1800, 1810 abuts against the guide surface portion 260, thereby restricting the upward movement of the actuator 9 and maintaining the protruding posture of the batten 7 (Figure 20A (B)). In other words, the upper end of the actuator 9 is provided with a first abutment portion (guide roller 9A) made of resin or rubber, and a second abutment portion (periphery 1811 of the upper part of the extension portion 1800) made of metal, and when the double-leaf door is in the fully closed position, the first abutment portion abuts against the guide surface portion 260, thereby maintaining the protruding position of the batten 7, and if the first abutment portion disappears, the second abutment portion abuts against the guide surface portion 260, thereby maintaining the protruding position of the batten 7.

[0070] [G] Other forms of effectors In the double-leaf door according to this embodiment, the configuration of the actuator for moving the batten in the width direction is not limited to a so-called lifting rod (actuator 9) extending in the height direction of the first door body 1. In the embodiment shown in Figs. 24 and 25, the actuator 9'' is a horizontal member extending horizontally across substantially the entire width of the first door body 1, and the trailing edge end of the horizontal member projects from the trailing edge end face 13 of the first door body 1, and the trailing edge end of the first door body 1 serves as an abutment portion and abuts against the prospective surface (guide surface) of the trailing edge vertical frame 4 of the first door body 1. A plurality of actuators 9'' (two in the illustrated embodiment) are provided at intervals in the height direction of the first door body 1, and the batten 7 is connected to the door end side of the actuator 9''. The actuator 9'' is biased in a direction such that its trailing edge end protrudes from the trailing edge end face 13 of the first door body 1, and when the trailing edge end of the actuator 9'' abuts against the guide surface and is pushed in, the batten 7, which is in the stored position, assumes a protruding position.

[0071] In the form shown in Fig. 25A, an operating body 9'' protrudes from the leading edge and upper portion of the interior facing surface 11 of the first door body 1. When the first door body 1 is closed, the operating body 9'' protrudes from the leading edge and upper portion of the interior facing surface 11 of the first door body 1 and abuts against the middle facing surface 35' of the upper frame 2, so that the batten 7 protrudes from the leading edge end surface 12 of the first door body 1 in conjunction with the operating body 9'' being pushed in. [Explanation of symbols]

[0072] 1 First door 11 Interior side (2nd side) 110 Prospect 111 Mitsumemen 112 Recess 140 1st top surface 141 2nd top surface 12 Door tip side end surface 120 Projection piece 2 Second door body 21 Interior facing surface 22 Door tip side end surface 220 Slope 3 Top Frame 32 1st bottom surface 33 2nd bottom surface 34 3rd bottom surface 35 Middle appearance 36 Groove 37 Airtight materials 370 Tip of Airtight Material 7. Mesh Board 7´ Panel unit 8 Cases 80 1st positioning surface section (2nd side positioning surface) 81 2nd marking surface section 82 Prospective surface part 83 Cover 830 Mitsukebe 86 Screw 9 Actuator 9´ Body 90 First side (Second side) 9A Guide roller (first contact part) 16 Link plate 17 Spring 18 Upper end element (actuating body) 1811 Edge (second contact part) 26 Guide plate 260 Guide surface part (guide surface) 263 Side section (side wall) α Gap dimension

Claims

1. In a double-leaf door consisting of a first door body, a second door body, and a door frame, A batten movable in a width direction of the first door body and an operating body movable in a height direction of the first door body are provided at a door end side portion of the first door body, A guide surface is formed on the upper frame of the door body at least above the movement path of the door end side portion of the first door body, When the first door body is closed, the upper end of the operating body comes into contact with the guide surface and is pushed in, and the operating body moves downward, and in response to this, the batten changes from the stored position to the protruding position, When the double-leaf doors are in a fully closed position, the upper end of the actuation body abuts against the guide surface, thereby maintaining the protruding position of the batten, and the batten in the protruding position covers the gap between the door end surface of the first door body and the door end surface of the second door body. Double swinging door.

2. The upper end of the actuator includes a first contact portion made of resin or rubber and a second contact portion made of metal, When the double swing door is in a fully closed position, the first contact portion contacts the guide surface, thereby maintaining the protruding position of the batten, When the first contact portion disappears, the second contact portion contacts the guide surface, thereby maintaining the protruding posture of the batten. The double swinging door according to claim 1.

3. the first contact portion is a peripheral surface of a resin guide roller, The second contact portion is a portion of the support portion of the resin guide roller. The double swinging door according to claim 2.

4. The support portion is located near the inner side of the peripheral surface of the resin guide roller. The double swinging door according to claim 3.

5. The actuation body includes a main body extending in a height direction and an upper end element provided at an upper end portion of the main body so as to be adjustable in height; The upper end of the upper end element is adapted to abut against the guide surface. A double swinging door according to any one of claims 1 to 4.

6. The double swing door is adapted to be opened by rotating from a closed position to a first side and to be closed by rotating from an open position to a second side, The guide surface is a downwardly inclined surface extending from the first side to the second side. A double swinging door according to any one of claims 1 to 4.

7. When the double swing doors are in a fully closed position, the actuation body is biased upward. A double swinging door according to any one of claims 1 to 4.

Images