Waterproof structure of meeting part of double swing door device

Abstract

To improve waterproof performance of a meeting part of a double swing door.SOLUTION: The meeting watertight member 6 includes a first depth surface 62 that is in close contact with the first side surface 56 of the groove G5, a second depth surface 63 that is in close contact with the second side surface 57 of the groove G5, and a front surface portion 60 that is in close contact with the door head-side portion of the first door body 2 when the opening is closed, and extends downward beyond the lower end 501 of the meeting member 5. A lower watertight member 7 is provided at a lower part of the second door body 3 so as to cover a corner part formed by an indoor side face part 31' and a door tip side end face 32' of the lower part of the second door body 3. An upper portion 7B located above the lower end 501 of the meeting style member 5 and a lower portion 7A located below the lower end 501 of the meeting style member 5 are provided, the lower portion of the first depth surface 62 of the meeting style watertight member 6 is in close contact with the upper portion 7B and the lower portion 7A of the lower watertight member 7, and the lower spacer 8 is provided between the lower portion of the second depth surface 63 of the meeting style watertight member 6 and the second side surface 57 of the groove G5.SELECTED DRAWING: Figure 14

Description

[Technical Field]

[0001] The present invention relates to a waterproof structure for a joint portion of a double door device. [Background technology]

[0002] When a double-leaf door consisting of a main door and a secondary door is in a fully closed state, the three sides of the main door and the secondary door abut and tightly contact watertight members formed around the door frame, forming a watertight structure around the four sides, and at the joint, the leading edge of the main door abuts and tightly contacts the joint watertight member formed on the leading edge of the secondary door, forming a watertight structure over the entire height of the joint (Patent Document 1).

[0003] If a small gap occurs at the bottom of the joint, water may leak from the gap and cause flooding inside the building. Therefore, for double-leaf doors that require watertight performance, it is important to prevent water leakage at the bottom of the joint. The applicant has proposed a structure that prevents water leakage at the bottom of the joint by providing a lower watertight member at the bottom of the leading edge of the sub-door, thereby tightly adhering the lower part of the joint watertight member to the lower watertight member (Patent Document 1).

[0004] However, the lower portion of the mating watertight member tends to be pushed by the lower watertight member and deformed so as to escape from the lower watertight member, and there is room for improvement in waterproof performance.

[0005] In addition, when a waterproof door is required to withstand water ingress of 3 meters or more, the waterproof structure at the top of the joint is also important. [Patent Document 1] Patent Publication No. 2021-50562 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0006] The present invention aims to improve the waterproof performance of the joint of a double door. [Means for solving the problem]

[0007] The technical means adopted by the present invention are: A waterproof structure for a joint portion of a double-swing door device consisting of a first door body and a second door body, A joint member having a groove extending in the height direction is provided on the door tip side of the second door body, The groove portion has a first side surface and a second side surface facing each other, and the groove portion has a first projected surface that is in close contact with the first side surface, a second projected surface that is in close contact with the second side surface, and a front surface that is in close contact with the door edge side portion of the first door body when the opening is closed. The watertight joint member extends downward beyond the lower end of the joint member, A lower watertight member is provided in the lower portion of the second door body so as to cover the corner formed by the first surface portion of the lower portion of the second door body and the door tip side prospective surface, The lower watertight member has an upper portion located above the lower end of the joint member and a lower portion located below the lower end of the joint member, The lower portion of the first visible surface of the joint watertight member is in close contact with the upper portion and the lower portion of the lower watertight member, A lower spacer is provided between a lower portion of the second visible surface of the joint watertight member and the second side surface of the groove portion. This is a waterproof structure for the joint of a double door device. In one embodiment, the upper portion of the lower watertight member and the lower spacer face each other with the joint watertight member interposed therebetween.

[0008] In one embodiment, the watertight joint member extends upward beyond the upper end of the joint member, An upper watertight member is provided in the upper portion of the second door body so as to cover the corner formed by the first surface portion of the upper portion of the second door body and the door tip side prospective surface, The upper watertight member has a lower portion located below the upper end of the joint member and an upper portion located above the upper end of the joint member, The upper portion of the first visible surface of the joint watertight member is in close contact with the upper portion and the lower portion of the upper watertight member.

[0009] In one embodiment, an upper spacer is provided between an upper portion of the second visible surface of the joint watertight member and the second side surface of the groove portion. In one embodiment, the lower portion of the upper watertight member and the upper spacer face each other with the joint watertight member interposed therebetween. [Effects of the Invention]

[0010] In the present invention, a lower watertight member is provided in the lower portion of the second door body so as to cover the corner formed by the first surface portion of the lower portion of the second door body and the door-front side projected surface, and the lower watertight member has an upper portion located above the lower end of the joint member and a lower portion located below the lower end of the joint member, and the lower portion of the first projected surface of the joint watertight member is in close contact with the upper portion and the lower portion of the lower watertight member, and a lower spacer is provided located between the lower portion of the second projected surface of the joint watertight member and the second side surface of the groove portion of the joint member, thereby suppressing deformation of the lower portion of the joint watertight member so as to escape from the lower watertight member, and by improving the adhesion between the lower portion of the first projected surface of the joint watertight member and the lower watertight member, water leakage from between the lower watertight member and the first projected surface of the lower portion of the joint watertight member. An upper watertight member is provided in the upper portion of the second door body so as to cover the corner formed by the first surface portion of the upper portion of the second door body and the front-side projected surface, wherein the upper watertight member has an upper portion located above the upper end of the joint member and a lower portion located below the upper end of the joint member, and the upper portion of the first projected surface of the joint watertight member is in close contact with the upper and lower portions of the upper watertight member, and an upper spacer is provided between the upper portion of the second projected surface of the joint watertight member and the second side surface of the groove portion of the joint member, thereby preventing the upper portion of the joint watertight member from deforming so as to escape from the upper watertight member, and improving the close contact between the upper portion of the first projected surface of the joint watertight member and the upper watertight member, thereby preventing water leakage from between the upper watertight member and the first projected surface of the upper portion of the joint watertight member. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a front view of a double-door device (fully closed state) according to an embodiment of the present invention, as viewed from the outdoor side. [Figure 2] 1 is a cross-sectional view of a double door device (fully closed state) according to an embodiment of the present invention. [Figure 3] FIG. 3 is a vertical cross-sectional view of the arrow A1 in FIG. 2. [Figure 4] FIG. 3 is a vertical cross-sectional view taken along the arrow A2 in FIG. 2. [Figure 5] FIG. 3 is a partial enlarged view of the seam portion in FIG. 2. [Figure 6] This is a partial front view of the joint of the double doors (the first door body is omitted). [Figure 7] The upper diagram is a cross-sectional view taken along the line A3 in Fig. 6. The lower diagram is a view of the upper diagram in Fig. 7 to which the first door body in the closed position has been added. [Figure 8] The upper diagram is a vertical cross-sectional view taken along the line A4 in the upper diagram of Fig. 7. The lower diagram is a vertical cross-sectional view taken along the line A5 in the upper diagram of Fig. 7. [Figure 9] FIG. 4 is a side view of the second door body. [Figure 10] The left figure is a vertical cross-sectional view taken along an arrow A6 in Fig. 9. The right figure is a vertical cross-sectional view taken along an arrow A7 in Fig. 9. [Figure 11]The upper figure is a side view of the second door body (without the second watertight member attached), and the lower figure is a cross-sectional view taken along the line A8 in the upper figure. [Figure 12] FIG. 10 is a view showing a second watertight member. [Figure 13] FIG. 10 is a view showing the third watertight member (fourth watertight member) in the deployed position (state before being attached). [Figure 14] FIG. 10 is a perspective view of a lower portion of the second door body to which the third watertight member is attached. [Figure 15] FIG. 16 is a front view (a vertical cross-sectional view taken along the arrow A11 in the upper view of FIG. 16) showing the seam portion, showing a state in which the upper spacer and the lower spacer are not provided. [Figure 16] The upper figure is a cross-sectional view taken along the line A9 in Fig. 15. The lower figure is a cross-sectional view taken along the line A10 in Fig. 15. [Figure 17] This is an exploded oblique view showing the attachment of the second watertight member (joint watertight member) to the door front side portion of the second door body and the joint member. [Figure 18] This is an oblique view showing the attachment of the second watertight member (joint watertight member) to the door-front side portion of the second door body and the joint member. DETAILED DESCRIPTION OF THE INVENTION

[0012] [A] Overall structure of double door device An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a door device (fully closed state) according to this embodiment, as seen from the outdoor side. FIG. 2 is a cross-sectional view of the door device (fully closed state) according to this embodiment. FIG. 3 is a vertical cross-sectional view taken along the arrow A1 in FIG. 2, and FIG. 4 is a vertical cross-sectional view taken along the arrow A2 in FIG. 2. In FIG. 2, the left side (upper side) is the indoor side, and the right side (lower side) is the outdoor side. In FIGS. 3 and 4, the left side is the outdoor side, and the right side is the indoor side. The waterproof door according to this embodiment is designed to prevent water generated on the outdoor side from seeping into the indoor side. In this specification, the terms "outdoor side" and "indoor side" are used not only to define when a certain element is actually located on the outdoor side or the indoor side, but also to define a portion or part of a certain element, for example, to define a portion of an element actually located on the indoor side that is close to the outdoor side.

[0013] As shown in Figure 1, the door device according to this embodiment is a so-called double-swing door, and is composed of a door frame 1 that forms an opening in a building, and a first door element 2 and a second door element 3 that open and close the opening. The door frame 1 is formed into a four-sided frame shape by a horizontally extending upper frame 10, a vertically extending first vertical frame 11, a vertically extending second vertical frame 12, and a horizontally extending lower frame 13. The trailing edge portion of the first door element 2 is rotatably attached to the first vertical frame 11, and the trailing edge portion of the second door element 3 is rotatably attached to the second vertical frame 12. When the opening is fully closed, the leading edge portions of the first door element 2 and the second door element 3 form a joint.

[0014] The first door body 2 and the second door body 3 are configured to open the building opening by rotating them from a closed position toward the outdoors. Normally, the second door body 3 is in a closed position to close one width half of the building opening, and the other width half of the building opening is opened or closed by opening or closing the first door body 2, with the first door body 2 functioning as a parent door or main door and the second door body 3 functioning as a child door or sub door. Furthermore, when necessary, both the first door body 2 and the second door body 3 can be opened to open the entire width of the building opening.

[0015] As shown in Figures 2 and 3, the door frame 1 is formed with four circumferentially concave grooves G1, G2, G3, and G4 that open toward the outdoors, and a first watertight member 4 having elasticity is attached to the four circumferential grooves G1 to G4 over the entire length of the grooves. When the opening is fully closed, the indoor side portions of the first door body 2 and the second door body 3 abut and tightly contact the watertight members 4 on three sides: the upper side, the lower side, and the trailing edge. At the joint portion, the leading edge portion of the first door body 2 abuts and tightly contacts the second watertight member (joint watertight member) 6 that is attached to the groove G5 of the joint member 5 provided on the second door body 3 over the entire height direction.

[0016] [B] First door body The first door body 2 has a frame structure (framework) consisting of an upper frame 20, a lower frame 21, a leading-edge vertical frame 22, a trailing-edge vertical frame 23, and multiple ribs 24, and is formed by adhering (or welding) multiple (typically two) surface materials 25 formed by bending metal plate material into a predetermined shape to the frame structure. Note that the upper frame 20, lower frame 21, leading-edge vertical frame 22, and trailing-edge vertical frame 23 may be welded together to form a four-sided frame, and then the surface materials 25 may be adhered or welded to the four-sided frame.

[0017] As shown in Figures 2 and 3, the top frame 20, bottom frame 21, leading-edge vertical frame 22, trailing-edge vertical frame 23, and back ribs 24 of this embodiment are formed from elongated frame members that are U-shaped in cross section, each consisting of a pair of visible edges and a projected edge. The U-shaped frame members are oriented such that the top frame 20 is open downward, the bottom frame 21 is open upward, the leading-edge vertical frame 22 is open toward the trailing edge, and the trailing-edge vertical frame 23 is open toward the leading edge. The back ribs 24 are arranged in pairs at intervals in the width direction of the first door body 2. In this embodiment, the projected edges of the back ribs 24 are fastened together with screws, but they may also be fastened together by welding.

[0018] As shown in Figure 5, the door-end vertical frame 22 of the first door body 2 is a long frame material that is formed in a U-shape in cross section from an outdoor-side visible edge 220, an indoor-side visible edge 221, and a visible edge 222, and extends in the vertical direction.

[0019] The frame structure and surface material in this embodiment are made of stainless steel, but the materials for the frame structure and surface material 25 are not limited and may be made of steel, for example. In this embodiment, the thickness of the ribs, i.e., the upper frame 20, lower frame 21, leading vertical frame 22, trailing vertical frame 23, and multiple ribs 24, is the same as the thickness of the surface material 25. The thickness of the ribs may be thicker than the thickness of the surface material 25.

[0020] As shown in Figures 2, 3, and 5, the first door body 2 has a vertically rectangular outdoor side portion 20', a vertically rectangular indoor side portion 21', a door front end face 22', a door rear end face 23', an upper end face 24', and a lower end face 25', and these surface portions are formed from a surface material 25.

[0021] As shown in Figure 5, a batten 29 consisting of a protruding piece protruding in the view direction from the door leading end face 22' is formed on the outdoor side portion of the door leading end face 22' of the first door body 2. The batten 29 is formed by folding back one of the surface materials 25 that forms the outdoor side surface portion 20' of the first door body 2 and the outdoor side portion of the door leading end face 22' and making it adhere tightly.

[0022] 5, the door-front side portion of the first door body 2 is made up of an outdoor-side visible edge 220, an indoor-side visible edge 221, and a projected edge 222, a door-front side vertical frame 22 formed in a U-shape in cross section, and a surface material 25 portion bonded to the surface of the door-front side vertical frame 22. More specifically, the door-front side portion of the surface portion of one of the surface materials 25 is bonded to the outdoor-side visible edge 220 to form the door-front side portion of the outdoor side portion 20', the folded-back portion of the door-front side of the surface portion forms the batten 29, and the folded portion is bonded to the outdoor side portion of the projected edge 222 to form the outdoor side portion of the door-front side end face 22'. The door-edge side portion of the surface of the other surface material 25 is glued to the indoor side visible edge 221 to form the door-edge side portion of the indoor side portion 21', and the door-edge side bent portion of the surface is glued to the indoor side portion of the visible edge 222 to form the indoor side portion of the door-edge side end face 22'.

[0023] As shown in Figures 1 and 2, the trailing edge of the outdoor side surface 20' of the first door body 2 is rotatably attached to the first vertical frame 11 of the door frame 1 by a hinge 26. A door closer (not shown) is provided above the indoor side surface 21' of the first door body 2. A cremone handle 27 is provided at the lower parts of the outdoor side surface 20' and the indoor side surface 21' of the first door body 2 as a means for pressing the first door body 2. A handle 28 used for opening and closing the first door body 2 is attached to the leading edge of the outdoor side surface 20' and the indoor side surface 21' of the first door body 2.

[0024] [C] Second door body The second door body 3 has a frame structure (skeleton) consisting of an upper frame 30 that constitutes the main frame, a lower frame 31, a vertical frame on the door front side (a hollow frame material formed by connecting the second member 38 to the first member 32), a vertical frame on the door rear side 33, and multiple middle ribs 34, and is formed by adhering multiple (typically two) surface materials 35 formed by bending metal plate material into a predetermined shape to the above frame structure.

[0025] As shown in Figures 2 and 5, the upper frame 30, lower frame 31, trailing edge vertical frame 33, and ribs 34 of this embodiment are formed from frame materials that are U-shaped in cross section, consisting of a pair of visible edges and a concave edge. The orientation of the U-shaped frame materials is such that the upper frame 30 is open downward, the lower frame 31 is open upward, and the trailing edge vertical frame 33 is open toward the door tip. The ribs 34 are arranged in pairs at intervals in the width direction of the second door body 3, with the concave edges of the open-edge frame material and the open-tail edge frame material abutting against each other. In this embodiment, the concave edges of the ribs 34 are fastened together with screws, but they may also be fastened together by welding.

[0026] 5, the door-leading side vertical frame of the second door body 3 is a hollow frame material formed by connecting a first member 32 formed in a generally U-shaped cross section from an outdoor-side visible edge 320, an indoor-side visible edge 321, and a prospective edge 322, and a second member 38 formed in a U-shaped cross section from an outdoor-side visible edge 380, an indoor-side visible edge 381, and a prospective edge 382. In other words, the door-leading side vertical frame (first member 32) of the second door body 3 is reinforced by the second member 38, which is a reinforcing member.

[0027] The outdoor portion of the projected edge 322 of the first member 32, which is formed into an approximately U-shaped cross section from an outdoor-side projected edge 320, an indoor-side projected edge 321, and a projected edge 322, consists of a leading edge projected edge 323 extending in the projected direction from the outdoor-side edge of the projected edge 322 toward the trailing edge, and an outdoor projected edge 324 extending in the projected direction from the trailing edge of the leading edge projected edge 323 toward the outdoor-side projected edge 320, and a step is formed by the leading edge projected edge 323 and the outdoor projected edge 324.

[0028] The projected dimensions of the second member 38 are slightly smaller than the projected dimensions of the first member 32, and the second member 38 is fixed at multiple points in the height direction with screws 325, with the outdoor side view edge 380 of the second member 38 overlapping the inner surface of the outdoor side view edge 320 of the first member 32, and the second member 38 is fixed at multiple points in the height direction with screws 325, with the indoor side view edge 381 of the second member 38 overlapping the inner surface of the indoor side view edge 321 of the first member 32, so that the first member 32 and the second member 38 form a hollow frame material.

[0029] The frame structure and surface material in this embodiment are made of stainless steel, but the material of the frame structure and surface material 35 is not limited and may be made of steel, for example. In this embodiment, the thickness of the ribs, i.e., the upper frame 30, the lower frame 31, the leading edge vertical frame (first member 32, second member 38), the trailing edge vertical frame 33, and the multiple ribs 34, is the same as the thickness of the surface material 35. The thickness of the ribs may be thicker than the thickness of the surface material 35. In this embodiment, the front dimension of the leading edge vertical frame (first member 32) of the second door body 3 is the same as the front dimension of the leading edge vertical frame 22 of the door body 2. Furthermore, in the double-door of this embodiment, the visible dimensions of the leading edge vertical frame 22 of the first door body 2, the visible dimensions (indoor side) of the trailing edge vertical frame 23, the visible dimensions of the rib 24, the visible dimensions of the first member 32 of the second door body 3 (indoor side visible edge 321), the visible dimensions (indoor side) of the trailing edge vertical frame 33, and the visible dimensions of the rib 34 are all the same (see Figure 2).

[0030] As shown in Figures 2, 4, and 5, the second door body 3 has a vertically rectangular outdoor side portion 30', a vertically rectangular indoor side portion 31', a door front end face 32', a door rear end face 33', an upper end face 34', and a lower end face 35', and these surface portions are formed from a surface material 35.

[0031] As shown in Fig. 5, a step is formed in the outdoor portion of the leading edge end face 32' of the second door body 3. More specifically, as shown in Fig. 5, the surface of the leading edge portion of the second door body 3 consists of a leading edge end face 32' extending in the visible direction from the leading edge of the indoor side surface portion 31' toward the outdoor side, a leading edge visible face 323' extending in the visible direction from the outdoor edge of the leading edge end face 32' toward the trailing edge, and an outdoor visible face 324' extending in the visible direction from the trailing edge of the leading edge visible face 323' toward the outdoor side surface portion 30', and a step is formed by the leading edge visible face 323' and the outdoor visible face 324'.

[0032] 5, the door-front side portion of the second door body 3 is made up of a door-front side vertical frame formed into a hollow frame shape from the first member 32 and the second member 38, and a surface member 35 adhered to the surface of the door-front side vertical frame (first member 32). More specifically, the door-front side portion of the surface member of one of the surface members 35 is adhered to the outdoor-side visible edge 320 to form the door-front side portion of the outdoor side section 30', and the door-front side bent portion of the surface member is adhered to the outdoor-side visible edge 324 and the door-front side visible edge 323, and to the outdoor side portion of the visible edge 322 to form a step formed by the outdoor-side visible surface 324' and the door-front side visible surface 323', and the outdoor side portion of the door-front side end face 32'. The door-edge side portion of the surface of the other surface material 35 is glued to the indoor side visible edge 321 to form the door-edge side portion of the indoor side portion 31', and the door-edge side folded portion of the surface is glued to the indoor side portion of the visible edge 322 to form the indoor side portion of the door-edge side end face 32'.

[0033] As shown in Figures 1 and 2, the trailing edge of the outdoor side surface 30' of the second door body 3 is rotatably attached to the second vertical frame 12 of the door frame 1 by a hinge 36. A door closer (not shown) is provided above the indoor side surface 31' of the second door body 3. A cremone handle 37 is provided at the lower parts of the outdoor side surface 30' and the indoor side surface 31' of the second door body 3 as a means for pressing the second door body 3.

[0034] As shown in Figures 2, 3, 5, etc., a joint member 5 is protruded from the door tip side of the indoor side surface portion 31' of the second door body 3. A concave groove portion G5 (see Figure 5) that opens toward the outdoor side is formed in the joint member 5 along the height direction, and a second watertight member (joint watertight member) 6 is attached to the groove portion G5 along the height direction.

[0035] [D] Composition of the joining section The configuration of the joint between the first door body 2 and the second door body 3 will be described in detail. [D-1] Composition of the outdoor part of the joint As shown in Figure 5, a step is formed at the outdoor portion of the leading edge end face 32' of the second door body 3, between the leading edge visible surface 323' and the outdoor visible surface 324'. A batten 29 is formed at the outdoor portion of the leading edge end face 22' of the first door body 2, protruding in the visible direction from the leading edge end face 22'. When the first door body 2 and the second door body 3 are in the closed position, the leading edge end face 22' of the first door body 2 faces the leading edge end face 32' of the second door body 3, the batten 29 of the first door body 2 faces the leading edge visible surface 323' of the second door body 3, and the tip of the batten 29 faces the outdoor visible surface 324' of the second door body 3. In addition, the door-leading end surface 32' of the second door body 3 may not have a step, in which case the protrusion of the first door body 2 may extend so as to face the door-leading portion of the outdoor side surface portion 30' of the first door body, in which case the protrusion will be biased toward the outdoor side relative to the outdoor side surface portion 20' of the first door body 2 and extend toward the door trailing end side of the second door body 3.

[0036] [D-2] Joint members As shown in Figures 2, 3, 5, etc., a vertically extending joint member 5 is provided on the leading edge of the indoor side surface 31' of the second door body 3. In this embodiment, the joint member 5 is a protrusion made of a frame material, but it may also be formed from a solid protrusion. The joint member 5 has an outdoor facing surface 50 that is attached to the indoor side surface 31' by abutting it. The joint member 5 is provided with a vertically extending groove G5 that is located on the leading edge of the outdoor facing surface 50 and projects from the leading edge end surface 32' of the second door body 3 in the facing direction (away from the trailing edge end surface 33'). The groove G5 is a pocket for attaching the second watertight member 6. In this embodiment, the joint member 5 provides a groove portion G5 in which the second watertight member 6 is attached, and a French drop (a French drop rod indicated by reference number R) is attached as a means for fixing the second door body 3 in the closed position.

[0037] The configuration of the joint member 5 according to this embodiment will be described in detail. As shown in the upper diagram of Fig. 7, the joint member 5 comprises an outdoor-side facing surface 50, a first facing surface 51 on the trailing edge side extending in the facing direction from the trailing edge end of the outdoor-side facing surface 50 toward the indoor side, an indoor-side facing surface 52 extending in the facing direction from the indoor-side end of the first facing surface 51 on the trailing edge side toward the leading edge side, an intermediate facing surface 53 extending in the facing direction from the leading edge end of the indoor-side facing surface 52 toward the outdoor side, and an outdoor-side facing surface of the intermediate facing surface 53. The door frame 5 includes an intermediate facing surface 54 extending in the facing direction from the end toward the door edge, a second facing surface 55 on the door edge side extending in the facing direction from the door edge end of the intermediate facing surface 54 toward the outdoor side, a first side surface 56 extending from the door edge end of the outdoor facing surface 50 toward the indoor side, a second side surface 57 facing away from the first side surface 56, and a bottom surface 58 connecting the indoor side end of the first side surface 56 and the indoor side end of the second side surface 57. The shape of the door frame 5 is not limited to that shown in the figure. For example, if the door frame 5 does not have a French groove, the door frame 5 may simply be formed from the outdoor facing surface 50 and the groove portion G5 (first side surface 56, second side surface 57, bottom surface 58).

[0038] In the joint member 5, a groove G5 is formed from the first side surface 56, the second side surface 57, and the bottom surface 58. The first side surface 56 of the joint member 5 and the leading edge end surface 32' of the second door body 3 are located on the same vertical plane and are flush with each other. The distance between the first side surface 56 and the second side surface 57, i.e., the groove width of the groove G5, is greater than the distance between the leading edge end surface 32' of the second door body 3 and the leading edge end surface 22' of the first door body 2 in the fully closed position. A protrusion 59 is formed from the leading edge-side second visible surface 55 and the second side surface 57, and the tip of the protrusion 59 faces, at a distance, the indoor side surface 21' of the first door body 2 in the closed position. The projected dimension of the second side surface 57 is smaller than the projected dimension of the first side surface 56, and the tip of the protrusion 59 is located indoors relative to the outdoor-side visible surface 50.

[0039] [D-3] Second watertight member (joint watertight member) A second watertight member 6 is attached to the groove G5 over the entire height. As shown in Fig. 8, the second watertight member 6 is an elongated member that is formed in a substantially rectangular cross section from a front surface 60 facing the outdoors, a rear surface 61, a first visible surface 62, and a second visible surface 63, and extends in the height direction. In a typical embodiment, the second watertight member 6 is a watertight rubber made of rubber.

[0040] 8, the front surface 60 has a surface 600 extending in the height direction parallel to the rear surface 61, and a first protrusion 601 protruding to the outdoors is formed in the height direction on the side of the surface 600 farther from the door edge of the second door body 3 (the second visible surface 63 side), and a second protrusion 602 protruding to the outdoors is formed in the height direction on the side of the surface 600 closer to the door edge of the second door body 3 (the first visible surface 62 side). That is, the front surface 60 of the second watertight member 6 is formed by the surface 600 and the first protrusion 601 and the second protrusion 602 on both the left and right sides of the surface 600. A hollow portion 64 is formed in the second watertight member 6 in the height direction at a position biased toward the front surface 60 side.

[0041] The upper portion of the second watertight member 6 has an upper end portion that protrudes upward from the upper end 500 of the joint member 5, and the upper surface of the second watertight member 6 is formed from a horizontal surface 65 on the rear surface 61 side and an inclined surface 67 that slopes obliquely upward from the front of the horizontal surface 65 toward the outdoor side. In the upper portion of the second watertight member 6, the portion that protrudes above the horizontal surface 65 is called an upper protrusion 6B. The lower portion of the second watertight member 6 has a lower end portion that protrudes downward from the lower end 501 of the joint member 5, and the lower surface of the second watertight member 6 is formed from a horizontal surface 66 on the rear surface 61 side and an inclined surface 68 that slopes obliquely downward from the front of the horizontal surface 66 toward the outdoor side. In the lower portion of the second watertight member 6, the portion that protrudes below the horizontal surface 66 is called a lower protrusion 6A.

[0042] [E] Watertight double door structure [E-1] Overview When the building opening is closed by the first door body 2 and the second door body 3, the upper, lower and trailing edge portions of the indoor side surface 21' of the first door body 2 and the upper, lower and trailing edge portions of the indoor side surface 31' of the second door body 3 come into contact with the first watertight member 4, thereby forming a four-way sealed structure located around the four peripheries of the building opening (Figs. 2 and 3). In addition, the leading edge portion of the indoor side surface 21' of the first door body 2 comes into contact with the second watertight member 6, thereby forming a sealed structure in the height direction at the joint portion. Furthermore, in this closed state, by pulling the first door body 2 and the second door body 3 toward the interior side with the cremone handles 27, 37, the upper, lower and trailing edge portions of the indoor side surface 21' of the first door body 2 are pressed against the first watertight member 4, and the upper, lower and trailing edge portions of the indoor side surface 31' of the second door body 3 are pressed against the first watertight member 4, forming a four-way watertight structure located around the four peripheries of the building opening. In addition, by pressing the leading edge portion of the indoor side surface 21' of the first door body 2 against the second watertight member 6, a watertight structure in the height direction at the joint is formed.

[0043] In this embodiment, so-called biaxial hinges are used as the hinges 26, 36, and it is possible to push the second door body 3 and the first door body 2 as a whole in the closed state toward the indoor side (pushing by water pressure or a pressing means).By pushing the first door body 2 and the second door body 3 in the normal closed position, the periphery of the indoor side portions 21', 31' of the first door body 2 and the second door body 3 (excluding the door tip side portion) is tightly attached to the first watertight member 4, and the door tip side portion of the indoor side portion 21' of the first door body 2 is tightly attached to the second watertight member 6, it is possible to close the first door body 2 and the second door body 3 in a more sealed state.

[0044] [E-2] Watertight structure around the first and second door bodies The watertight structure of the second door body 3, the first door body 2, and the door frame 1 in the closed position will now be described. The upper frame 10 of the door frame 1 is a long element extending in the opening width direction, opens toward the outdoors, and is formed with a concave groove G1 extending horizontally in the opening width direction. A first watertight member (upper frame-side watertight member) 4 is attached to the groove G1, and an upper portion of the indoor side surface portion 21' of the first door body 2 in the fully closed position and an upper portion of the indoor side surface portion 31' of the second door body 3 are in tight contact with the first watertight member (upper frame-side watertight member) 4.

[0045] The bottom frame 13 of the door frame 1 is a long element extending in the opening width direction, opens toward the outdoor side, and has a concave groove G4 formed therein that extends horizontally in the opening width direction. A first watertight member (bottom frame side watertight member) 4 is attached to the groove G4, and a lower portion of the indoor side surface 21' of the first door body 2 in the fully closed position and a lower portion of the indoor side surface 31' of the second door body 3 are in close contact with the first watertight member (bottom frame side watertight member) 4. The first watertight member 4 (bottom frame side watertight member) is located across the height between the outdoor side lower surface 130 and the indoor side upper surface 131 of the bottom frame 13.

[0046] The first vertical frame 11 of the door frame 1 is a long element extending in the opening height direction, and is open toward the outdoors, with a concave groove G2 formed therein that extends perpendicularly to the opening height direction. A first watertight member (vertical frame-side watertight member) 4 is attached to the groove G2, and the trailing edge of the indoor side surface portion 21' of the first door body 2 in the fully closed position is in tight contact with the first watertight member (vertical frame-side watertight member) 4.

[0047] The second vertical frame 12 of the door frame 1 is a long element extending in the opening height direction, and is open toward the outdoors, with a concave groove G3 formed therein that extends perpendicular to the opening height direction. A first watertight member (vertical frame-side watertight member) 4 is attached to the groove G3, and the trailing edge of the indoor side surface portion 31' of the second door body 3 in the fully closed position is in close contact with the first watertight member (vertical frame-side watertight member) 4.

[0048] The first watertight member 4 is a long member extending along the length of the grooves G1 to G4, and is fitted around the entire length of the groove G1 formed in the upper frame 10, the groove G2 formed in the first vertical frame 11, the groove G3 formed in the second vertical frame 12, and the groove G4 formed in the lower frame 13. In a typical embodiment, the first watertight member 4 is a watertight rubber made from rubber. The first watertight member 4 may also be formed by closely adhering a plurality of short elements to each other.

[0049] [E-3] Watertight structure of the joint between the first and second door bodies As shown in Fig. 3, when the first door body 2 is in the closed position, a horizontal surface 65 of the upper end of the second watertight member 6 is in contact with an outdoor portion of the indoor side lower surface 101 of the upper frame 10, and an inclined surface 67 is located above the indoor side lower surface 101 of the upper frame 10 and is in contact with the first watertight member (upper frame side watertight member) 4. A horizontal surface 66 of the lower end of the second watertight member 6 is in contact with an outdoor portion of the indoor side upper surface 131 of the lower frame 13, and an inclined surface 68 is located below the indoor side upper surface 131 of the lower frame 13 and is in contact with the first watertight member (lower frame side watertight member) 4.

[0050] When the second watertight member 6 is attached to the groove G5 of the joint member 5 of the second door body 3, the rear surface 61 abuts the bottom surface 58, the first projected surface 62 abuts the first side surface 56, and the second projected surface 63 abuts the second side surface 57. The front surface 60 protrudes slightly outdoors beyond the indoor side surface 31' of the second door body 3. The first projected surface 62 of the second watertight member 6 is flush with the leading edge end surface 32' of the second door body 3. The upper end portion of the second watertight member 6 extends above the upper end 500 of the joint member 5, and the lower end portion of the second watertight member 6 extends below the lower end 501 of the joint member 5. The second watertight member 6 may be formed from multiple elements, for example, by closely adhering multiple elements divided in the height direction to each other.

[0051] As shown in Figure 5, when the first door body 2 and the second door body 3 are in a fully closed position (when the opening is closed), the door-tip side portion of the indoor side portion 21' of the first door body 2 adheres to the portion of the front portion 60 of the second watertight member 6 on the second visible surface 63 side, i.e., the first protrusion 601, along the height direction, forming a linear adhesion portion along the height direction.

[0052] In this embodiment, the position of the face portion 600 of the front surface portion 60 is in a position where it can come into contact with the indoor side surface portion 21' of the first door body 2 in the normal closed state (when water pressure is not applied). Therefore, when the first door body 2 is in the fully closed position, first, the door-edge side portion of the indoor side surface portion 21' comes into contact with the first protrusion 601, and then rotates so as to push in the first protrusion 601, thereby assuming the closed position.

[0053] When the door edge side portion of the indoor side surface portion 21' of the first door body 2 is in close contact with the first protrusion 601 of the front surface portion 60 of the second watertight member 6, the portion of the front surface portion 60 of the second watertight member 6 on the second visible surface 63 side is elastically pressed in, and the door edge side portion of the indoor side surface portion 21' of the first door body 2 is in close contact with the second side surface portion of the face portion 600 in addition to the first protrusion 601. In this way, when the opening is closed, the door edge side portion of the indoor side surface portion 21' of the first door body 2 is in close contact with the second watertight member 6 provided on the door edge side of the second door body 3 in the closed position, including the linear contact portion, thereby providing a watertight structure throughout the height direction of the joint portion.

[0054] In addition, in this embodiment, the second protrusion 602 protruding from the outdoor side of the first visible surface 62 of the second watertight member 6 is in close contact with the indoor side portion of the door leading end surface 32' of the second door body 3, thereby preventing water leakage from between the corner formed by the front portion 60 of the second watertight member 6 and the first visible surface 62 and the corner formed by the indoor side portion 31' of the second door body 3 and the door leading end surface 32'.Even if water leakage occurs, the outdoor visible surface 50 of the joint member 5 extending in the vertical direction and the indoor side portion 31' of the second door body 3 are in close contact while being waterproofed, and further the groove portion (pocket) G5 extending in the vertical direction and the second watertight member 6 are in close contact, so water is prevented from entering the indoor side.

[0055] When water pressure acts on the double-swing door according to this embodiment in a fully closed state, the indoor-side portion of the leading edge portion of the first door body 2 abuts against the watertight joint member 6, and part of the force acting on the leading edge portion of the first door body 2 also acts on the leading edge portion of the second door body 3. Therefore, a larger force acts on the leading edge portion of the second door body 3 than on the leading edge portion of the first door body 2. In this embodiment, the leading edge vertical frame of the second door body 3 is formed from a hollow frame body consisting of the first member 32 and the second member 38, making the strength of the leading edge vertical frame of the second door body 3 greater than the strength of the leading edge vertical frame 22 of the first door body 2. This suppresses the amount of deflection of the leading edge portion of the second door body 3 and maintains close contact between the indoor-side portion of the first door body 2 and the watertight joint member 6. Furthermore, by reducing the amount of deflection at the door edge portion of the double-swing door, the area of ​​the portion where the lower protrusion 6A of the second watertight member (joint watertight member) 6 comes into close contact with the first watertight member 4 (lower frame-side watertight member) and the area of ​​the portion where the upper protrusion 6B of the second watertight member (joint watertight member) 6 comes into close contact with the first watertight member 4 (upper frame-side watertight member) are increased, thereby maintaining close contact between the lower portion of the second watertight member (joint watertight member) 6 and the third watertight member (lower watertight member) 7, and between the upper portion of the second watertight member (joint watertight member) 6 and the fourth watertight member (upper watertight member) 7'. The third watertight member (lower watertight member) 7 and the fourth watertight member (upper watertight member) 7' will be described in detail below.

[0056] [E-4] Watertight structure below the joint The watertight structure below the joint will be explained. First, in this embodiment, the height positions of the lower end surface 35' of the second door body 3 (the lower end surface 25' of the first door body 2), the lower end 501 of the joint member 5, the outdoor-side lower surface 130 of the lower frame 13, the indoor-side upper surface 131 of the lower frame 13 (located higher than the outdoor-side lower surface 130), and the first watertight member 4 (watertight member on the lower frame side) attached to the groove G4 will be explained.

[0057] As shown in Figures 3 and 8, the lower end surface 35' of the second door body 3 (the lower end surface 25' of the first door body 2) is higher than the outdoor-side lower surface 130 of the sill 13 and lower than the indoor-side upper surface 131. The lower end 501 of the joint member 5 is higher than the indoor-side upper surface 131 of the sill 13. The first watertight member 4 (the watertight member on the sill side) is located at a height between the outdoor-side lower surface 130 and the indoor-side upper surface 131 of the sill 13. The lower end surface 35' of the second door body 3 (the lower end surface 25' of the first door body 2) is located at an intermediate height of the first watertight member 4 (the watertight member on the sill side). The lower end 501 of the joint member 5 does not reach the lower end surface 35' of the second door body 3, and the lower end portion of the second door body 3 is located lower than the lower end 501 of the joint member 5.

[0058] The second watertight member 6 is composed of an upper end portion located above the upper end 500 of the joint member 5 (i.e., the upper end of the groove G5) in the height direction, a portion attached to the groove G5, and a lower end portion located below the lower end 501 of the joint member 5 (i.e., the lower end of the groove G5). When the opening is closed, the lower end 501 of the joint member 5 (i.e., the lower end of the groove G5) is located above and spaced apart from the upper surface 131 of the sill 13 on the indoor side, and the second watertight member 6 extends below the lower end 501 of the joint member 5. In the lower portion of the second watertight member 6, the portion (lower end portion) located below the lower end 501 of the joint member 5 (i.e., the lower end of the groove G5) is not supported by the groove G5, and there are no grooves G5 around the first visible surface 62, the second visible surface 63, and the rear surface 61 of the lower end portion.

[0059] When the opening is closed, the horizontal surface 66 of the lower end of the second watertight member 6 abuts against the outdoor-side tip portion of the indoor-side upper surface 131 of the sill 13, and the inclined surface 68 of the lower end of the second watertight member 6 abuts against the first watertight member 4 (the watertight member on the sill side). When a force acts on the lower end portion of the second watertight member 6 toward the indoor side, the lower end portion of the second watertight member 6 and the first watertight member 4 (the watertight member on the sill side) are deformed so as to be crushed while the inclined surface 68 of the lower end portion of the second watertight member 6 maintains contact with the first watertight member 4, and the water pressure acting on the lower end portion of the second watertight member 6 is received by the first watertight member 4 (the watertight member on the sill side) and the sill 13 while the inclined surface 68 of the lower end portion of the second watertight member 6 and the first watertight member 4 (the watertight member on the sill side) are maintained in close contact.

[0060] The lower end 501 of the joint member 5 does not reach the lower end surface 35' of the second door body 3, and the indoor side portion 31' and the door-tip side end surface 32' of the second door body 3 have lower surface portions 31A', 32A' that are located below the lower end 501 of the joint member 5 (see Figures 11, 14, and the lower diagram of Figure 16). When the second watertight member 6 is attached to the groove portion G5 of the joint member 5, the second protrusion 602 protruding from the corner formed by the front portion 60 and the first visible surface 62 of the second watertight member 6 is in contact with the corner formed by the indoor side portion 31' and the door front end surface 32' of the second door body 3 or the nearby area (in this embodiment, the indoor side area of ​​the door front end surface 32') along the height direction, and the lower end portion of the second protrusion 602 of the second watertight member 6 comes into contact with the corner or the nearby area formed by the lower surface portion 31A' and the lower surface portion 32A' of the lower part of the second door body 3. In this embodiment, the second watertight member 6 and the third watertight member (lower watertight member) 7 work together to prevent water leakage between the lower part of the corner (second protrusion 602) formed by the front surface 60 and the first visible surface 62 of the second watertight member 6 and the lower part of the corner or the part near the corner formed by the indoor side surface 31' and the door front end surface 32' of the second door body 3.

[0061] As shown in Figures 6 to 11 and 14 to 16, in this embodiment, a third watertight member (lower watertight member) 7 is provided in the lower part of the second door body 3 so as to cover the corner formed by the lower part of the indoor side surface part 31' and the lower part of the door tip side end surface 32' of the second door body 3. As shown in Figures 9 and the upper diagram of Figure 11, the third watertight member 7, when attached to the lower part of the second door body 3, is made up of a lower part 7A located below the lower end 501 of the joint member 5, and an upper part 7B which is a part located above the lower end 501 of the joint member 5.

[0062] The lower portion 7A of the third watertight member 7 is provided across the lower surface portion 31A' and the lower surface portion 32A' so as to cover the corner formed by the lower surface portion 31A' of the indoor side portion 31' of the second door body 3 and the lower surface portion 32A' of the door front end surface 32', and the lower portion 7A is attached in an L-shape in cross section, consisting of a first portion 70 attached (glued, etc.) to the lower surface portion 32A' and a second portion 71 attached (glued, etc.) to the lower surface portion 31A'.

[0063] The upper portion 7B of the third watertight member 7 is formed integrally with the first portion 70 of the lower portion 7A, and is composed of a third portion 72 located directly above the first portion 70 and attached (glued, etc.) to a lower portion of the leading end surface 32' of the second door body 3, and a fourth portion 73 formed integrally with the third portion 72 and attached (glued, etc.) to the first side surface 56 of the groove G5 of the joint member 5. The leading end surface 32' of the second door body 3 and the first side surface 56 of the groove G5 are located in the same vertical plane, and the fourth portion 73 of the upper portion 7B of the lower watertight member 7 extends along the first side surface 56 of the groove G5.

[0064] The third watertight member 7, when attached so as to cover the corner formed by the lower part of the indoor side surface 31' and the lower part of the leading edge end face 32' of the second door body 3, consists of a part extending in the front direction along the indoor side surface 31' and a part extending in the front direction along the leading edge end face 32'. The first part 70 and the third part 72 of the third watertight member 7 form a front part 7C that is adhered to the lower part of the leading edge end face 32' of the second door body 3. The fourth part 73 extends in the front direction to the indoor side beyond the indoor side surface 31'. The second part 71 is the front part.

[0065] In one embodiment, the third watertight member 7 is formed from a rubber material with excellent watertight performance. In one embodiment, the third watertight member 7 is softer and has a larger compressibility than the first watertight member 4 and the second watertight member 6. In one preferred embodiment, the third watertight member 7 is formed from EPTSEALER (registered trademark), whose main component is EPDM rubber foam.

[0066] 13 shows the unfolded third watertight member 7 before installation. For example, the upper corner of one end of a horizontally rectangular material is cut out, and a slit is formed from the lower corner of the cutout toward the other end. The lower side of the other end portion is the first portion 70, the upper side is the third portion 72, the lower portion of the one end side is the second portion 71, and the portion of the upper portion where the slit is formed is the fourth portion 73. The third watertight member 7 is attached to the lower portion of the second door body 3 so as to cover the corner formed by the lower portion of the indoor side surface portion 31' and the lower portion of the door front end surface 32' of the second door body 3, with the second portion 71 of the lower portion 7A of the unfolded third watertight member 7 folded at a right angle to the remaining portions. The upper portion 7B (third portion 72, fourth portion 73) of the lower watertight member 7 and the first portion 70 of the lower portion 7A extend in the forward direction, and the second portion 71 of the lower portion 7A extends in the forward direction. A projection portion 7C is formed from the third portion 72 of the upper portion 7B of the lower watertight member 7 and the first portion 70 of the lower portion 7A to be bonded to a lower portion of the door-leading side end surface 32' of the second door body 3. The lower end of the fourth portion 73 of the upper portion 7B of the third watertight member 7 coincides with the lower end 501 of the first side surface 56 of the groove portion G5. In the illustrated embodiment, the third watertight member 7 is attached with the lower end of the lower portion 7A coinciding with the lower end surface 35' of the second door body 3, but the lower end of the third watertight member 7 does not have to reach the lower end surface 35' of the second door body 3.

[0067] The shape of the third watertight member 7 is not limited to the illustrated embodiment. In this embodiment, the lower portion 7A of the third watertight member 7 is attached in an L-shaped cross section, but for example, only the first portion 70 or the second portion 71 may cover the lower portion of the corner between the indoor side surface portion 31' and the door-front end surface 32' of the second door body 3.

[0068] The third watertight member 7 (first part 70, second part 71, third part 72, fourth part 73) is attached to the lower part of the corner formed by the lower part of the indoor side part 31' of the second door body 3 and the door front end face 32', straddling the upper and lower parts of the lower end 501 of the joint member (groove part G5) 5 so as to include the lower end 501, and the fourth part 73 of the third watertight member 7 is attached to the lower part (above the lower end 501) of the first side surface 56 of the groove part G5. The first visible surface 62 of the second watertight member 6 attached to the groove portion G5 of the joint member 5 is in close contact with the first side surface 56 of the groove portion G5, and the upper part of the lower part of the second watertight member 6 (the lower part, the part above the lower end 501 of the joint member 5) is attached to the groove portion G5 in such a way as to compress and crush the fourth part 73 (upper part 7B) of the third watertight member 7 (see Figures 10 and 16).

[0069] The upper part (the lower part, the part above the lower end 501 of the joint member 5) of the corner (second protrusion 602) of the front surface 60 and the first visible surface 62 of the second watertight member 6 is in close contact with the upper part 7B (the boundary part between the third part 72 and the fourth part 73) of the third watertight member 7 (see the upper diagram in Figure 7). The lower part (the lower part, the part below the lower end 501 of the joint member 5) of the lower part of the corner (second protrusion 602) of the front surface 60 and the first visible surface 62 of the second watertight member 6 is in close contact with the corner of the lower part 7A (the first part 70 and the second part 71) of the third watertight member 7 (see the lower diagram in Figure 16).

[0070] In this embodiment, the third watertight member 7 is softer than the first watertight member 4 and the second watertight member 6, and has a larger compressibility. When the second door body 3 is in the closed position, the second portion 71 of the third watertight member 7 provided on the lower surface portion 31A' of the indoor side surface portion 31' of the second door body 3 comes into close contact with the first watertight member 4 (the watertight member on the lower frame side). At this time, the second portion 71 of the third watertight member 7 is compressed and crushed to a thin wall, so that it comes into close contact with the first watertight member 4 (the watertight member on the lower frame side) without any gaps. In addition, the third watertight member 7 (the corner formed by the first portion 70 and the second portion 71 and the boundary portion between the third portion 72 and the fourth portion 73) provided on the lower portion of the second door body 3 comes into close contact with the corner (second protrusion 602) formed by the front surface portion 60 and the first visible surface 62 of the lower portion of the second watertight member 6 in a compressed state.

[0071] In a double-door device consisting of a first door body 2 and a second door body 3, a joint member 5 with a groove portion G5 extending in the height direction is provided on the door edge side of the second door body 3, and a joint watertight member 6 is provided in the groove portion G5, against which the door edge side portion of the first door body 2 comes into close contact when the opening is closed, and the joint watertight member 6 has a first visible surface 62 that comes into close contact with the first side surface 56 of the groove portion G5, a second visible surface 63 that comes into close contact with the second side surface 57 of the groove portion G5, and a front surface 60 against which the door edge side portion of the first door body 2 comes into close contact when the opening is closed, and the joint watertight member 6 extends downward beyond the lower end 501 of the joint member 5. A third watertight member (lower watertight member) 7 is provided at the lower portion of the second door body 3 so as to cover the corner formed by the indoor side surface portion 31' and the door-tip side end surface 32' of the lower portion of the second door body 3. The third watertight member 7 has an upper portion 7B located above the lower end 501 of the joint member 5 and a lower portion 7A located below the lower end 501 of the joint member 5. The lower portion of the first visible surface 62 of the joint watertight member 6 is in close contact with the upper portion 7B (fourth portion 73) and the lower portion 7A (second portion 71) of the third watertight member 7. Here, the lower portion of the joint watertight member 6 tends to be pressed by the third watertight member (lower watertight member) 7 and deform so as to escape from the lower watertight member (Fig. 15), which may cause a gap to form between the third watertight member 7 and the first visible surface 62 of the lower portion of the joint watertight member 6.

[0072] In this embodiment, a lower spacer 8 is provided between the lower portion of the second visible surface 63 of the watertight joint member 6 and the second side surface 57 of the groove portion G5 (FIGS. 6 to 10, 14, 17, and 18). In the illustrated embodiment, the lower spacer 8 is a rectangular plate-like element formed from, for example, rubber or resin, but the shape and material are not limited thereto. The lower spacer 8 is provided between the lower portion of the second visible surface 63 of the watertight joint member 6 and the second side surface 57 of the groove portion G5 by being inserted into the groove portion G5 while being fixed in a predetermined position in the lower portion of the second visible surface 63 of the watertight joint member 6 (FIG. 17). The projected dimensions of the lower spacer 8 are approximately the same as the projected dimensions of the second side surface 57 of the groove portion G5 (Figures 7 to 9), and when the lower spacer 8 is installed, the lower spacer 8 is aligned with the lower end 501 of the joint member 5 (it may extend beyond the lower end 501), and the lower half of the lower spacer 8 faces the upper portion 7B (fourth part 73) of the third watertight member 7 across the joint watertight member 6 (Figures 6, 9, 10, 14).

[0073] In this embodiment, by providing a lower spacer 8 positioned between the lower portion of the second visible surface 63 of the watertight joint member 6 and the second side surface 57 of the groove portion G5, the lower portion of the watertight joint member 6 is prevented from deforming so as to escape from the third watertight member (lower watertight member) 7, improving the adhesion between the lower portion of the first visible surface 62 of the watertight joint member 6 and the third watertight member (lower watertight member) 7. This prevents water leakage from between the third watertight member 7 and the first visible surface 62 of the lower portion of the watertight joint member 6.

[0074] [E-5] Watertight structure of the upper part of the joint The watertight structure above the joint portion will be explained. First, in this embodiment, the height positions of the upper end surface 34' of the second door body 3 (the upper end surface 24' of the first door body 2), the upper end 500 of the joint member 5, the outdoor-side lower surface 100 of the upper frame 10, the indoor-side lower surface 101 of the upper frame 10 (located lower than the outdoor-side lower surface 100), and the first watertight member 4 (upper frame-side watertight member) attached to the groove portion G1 will be explained.

[0075] As shown in Figures 3 and 8, the upper end surface 34' of the second door body 3 (the upper end surface 24' of the first door body 2) is lower than the outdoor-side lower surface 100 of the head frame 10 and higher than the indoor-side lower surface 101. The upper end 500 of the joint member 5 is lower than the indoor-side lower surface 101 of the head frame 10. The first watertight member 4 (head frame-side watertight member) is located between the outdoor-side lower surface 100 and the indoor-side lower surface 101 of the head frame 10, on the indoor-side lower surface 101 side. The upper end surface 34' of the second door body 3 (the upper end surface 24' of the first door body 2) is located higher than the first watertight member 4 (head frame-side watertight member). The upper end 500 of the joint member 5 does not reach the upper end surface 34' of the second door body 3, and the upper end portion of the second door body 3 is located higher than the upper end 500 of the joint member 5.

[0076] The second watertight member (joint watertight member) 6 is composed of an upper end portion located above the upper end 500 of the joint member 5 (i.e., the upper end of the groove G5) in the height direction, a portion attached within the groove G5, and a lower end portion located below the lower end 501 of the joint member 5 (i.e., the lower end of the groove G5). When the opening is closed, the upper end 500 of the joint member 5 (i.e., the upper end of the groove G5) is located below the indoor side lower surface 101 of the upper frame 10 at a distance, and the second watertight member 6 extends above the upper end 500 of the joint member 5. In the upper portion of the second watertight member 6, the portion (upper end portion) located above the upper end 500 of the joint member 5 (i.e., the upper end of the groove G5) is not supported by the groove G5, and there are no grooves G5 around the first visible surface 62, the second visible surface 63, and the rear surface 61 of the upper end portion. When the opening is closed, the horizontal surface 65 of the upper end of the second watertight member 6 abuts against the outdoor-side tip portion of the indoor-side lower surface 101 of the upper frame 10, and the inclined surface 67 of the upper end of the second watertight member 6 abuts against the first watertight member 4 (the upper frame-side watertight member). When a force acts on the upper end portion of the second watertight member 6 toward the indoor side, the upper end portion of the second watertight member 6 and the first watertight member 4 (the upper frame-side watertight member) are deformed so as to be crushed, while the inclined surface 67 of the upper end portion of the second watertight member 6 maintains contact with the first watertight member 4, and the water pressure acting on the upper end portion of the second watertight member 6 is received by the first watertight member 4 (the upper frame-side watertight member) and the upper frame 10, while the inclined surface 67 of the upper end portion of the second watertight member 6 and the first watertight member 4 (the upper frame-side watertight member) are maintained in close contact.

[0077] The upper end 500 of the joint member 5 does not reach the upper end surface 34' of the second door body 3, and the indoor side portion 31' and the door-tip side end surface 32' of the second door body 3 have upper surface portions 31B', 32B' that are located above the upper end 500 of the joint member 5 (see Figure 11). When the second watertight member 6 is attached to the groove portion G5 of the joint member 5, the second protrusion 602 protruding from the corner formed by the front portion 60 and the first visible surface 62 of the second watertight member 6 is in contact with the corner formed by the indoor side portion 31' and the door front end surface 32' of the second door body 3 or the nearby area (in this embodiment, the indoor side area of ​​the door front end surface 32') along the height direction, and the upper end portion of the second protrusion 602 of the second watertight member 6 comes into contact with the corner or the nearby area formed by the upper surface portions 31B', 32B' of the upper part of the second door body 3. In this embodiment, the second watertight member 6 and the fourth watertight member (upper watertight member) 7' work together to prevent water leakage between the upper part of the corner (second protrusion 602) formed by the front surface 60 and the first visible surface 62 of the second watertight member 6 and the upper part of the corner or the area near the corner formed by the indoor side surface 31' and the door front end surface 32' of the second door body 3.

[0078] As shown in Figures 6 to 11 and 14 to 16, in this embodiment, a fourth watertight member (upper watertight member) 7' is provided in the upper part of the second door body 3 so as to cover the corner formed by the upper part of the indoor side surface part 31' and the upper part of the door front end surface 32' of the second door body 3. The third watertight member (lower watertight member) 7 and the fourth watertight member (upper watertight member) 7' are made of the same element (Figure 13), and it should be noted that the description of the third watertight member (lower watertight member) 7 can be used in the description of the fourth watertight member (upper watertight member) 7'.

[0079] The third watertight member (lower watertight member) 7 and the fourth watertight member (upper watertight member) 7' are attached to the lower and upper parts of the door edge part of the second door body 3, respectively, in an upside-down position of the same element (Fig. 13). That is, in the fourth watertight member (upper watertight member), the lower part 7A of the third watertight member (lower watertight member) 7 becomes the upper part 7A', and the upper part 7B becomes the lower part 7B'. As shown in Figs. 9 and 11 (top diagram), when attached to the upper part of the second door body 3, the fourth watertight member 7' consists of an upper part 7A' located above the upper end 500 of the joint member 5, and a lower part 7B' located below the upper end 500 of the joint member 5.

[0080] The upper portion 7A' of the fourth watertight member 7' is provided across the upper surface portion 31B' and the upper surface portion 32B' so as to cover the corner formed by the upper surface portion 31B' of the indoor side portion 31' of the second door body 3 and the upper surface portion 32B' of the door front end surface 32', and the upper portion 7A' is attached in an L-shape in cross section by a first portion 70 attached (glued, etc.) to the upper surface portion 32B' and a second portion 71 attached (glued, etc.) to the upper surface portion 31B'.

[0081] The lower portion 7B' of the fourth watertight member 7' is formed integrally with the first portion 70 of the upper portion 7A' and is composed of a third portion 72 located directly above the first portion 70 and attached (glued, etc.) to an upper portion of the leading end surface 32' of the second door body 3, and a fourth portion 73 formed integrally with the third portion 72 and attached (glued, etc.) to the first side surface 56 of the groove G5 of the joint member 5. The leading end surface 32' of the second door body 3 and the first side surface 56 of the groove G5 are located in the same vertical plane, and the fourth portion 73 of the lower portion 7B' of the upper watertight member 7' extends along the first side surface 56 of the groove G5.

[0082] When the fourth watertight member 7' is attached so as to cover the corner formed by the upper part of the indoor side surface 31' and the upper part of the leading edge end face 32' of the second door body 3, the fourth watertight member 7' comprises a part extending in the front direction along the indoor side surface 31' and a part extending in the front direction along the leading edge end face 32'. The first part 70 and the third part 72 of the fourth watertight member 7' form a front part 7C that is adhered to the upper part of the leading edge end face 32' of the second door body 3. The fourth part 73 extends in the front direction to the indoor side beyond the indoor side surface 31'. The second part 71 is the front part.

[0083] The fourth watertight member 7' (first part 70, second part 71, third part 72, fourth part 73) is attached above the corner formed by the upper part of the indoor side part 31' of the second door body 3 and the door front end face 32', straddling the upper and lower parts of the upper end 500 of the joint member (groove part G5) 5 so as to include the upper end 500, and the fourth part 73 of the fourth watertight member 7' is attached to the upper part (above the upper end 500) of the first side surface 56 of the groove part G5. The first visible surface 62 of the second watertight member 6 attached to the groove portion G5 of the joint member 5 is in close contact with the first side surface 56 of the groove portion G5, and the lower portion of the upper portion of the second watertight member 6 (the upper portion, the portion below the upper end 500 of the joint member 5) is attached to the groove portion G5 in such a way as to compress and crush the fourth portion 73 (lower portion 7B') of the fourth watertight member 7' (see Figure 10 and the upper diagram of Figure 16).

[0084] The upper part (the upper part, the part below the lower end 500 of the joint member 5) of the corner (second protrusion 602) of the front surface 60 and the first visible surface 62 of the second watertight member 6 is in close contact with the lower part 7B' (the boundary part between the third part 72 and the fourth part 73) of the fourth watertight member 7'. The upper part (the upper part, the part above the upper end 500 of the joint member 5) of the corner (second protrusion 602) of the front surface 60 and the first visible surface 62 of the second watertight member 6 is in close contact with the corner of the upper part 7A' (the first part 70 and the second part 71) of the fourth watertight member 7'.

[0085] In this embodiment, the fourth watertight member 7' is softer than the first watertight member 4 and the second watertight member 6 and has a larger compressibility. When the second door body 3 is in the closed position, the second portion 71 of the fourth watertight member 7' provided in the upper portion of the indoor side surface portion 31' of the second door body 3 comes into close contact with the first watertight member 4 (the watertight member on the upper frame side). At this time, the second portion 71 of the fourth watertight member 7' is compressed and crushed to a thin wall, so that the fourth watertight member 7' comes into close contact with the first watertight member 4 (the watertight member on the upper frame side) without any gaps. In addition, the fourth watertight member 7' (the corner formed by the first portion 70 and the second portion 71 and the boundary portion between the third portion 72 and the fourth portion 73) provided in the upper portion of the second door body 3 comes into close contact with the corner (second protrusion 602) formed by the front surface 60 and the first visible surface 62 of the upper portion of the second watertight member 6 in a compressed state.

[0086] In a double-door device consisting of a first door body 2 and a second door body 3, a joint member 5 having a groove portion G5 extending in the height direction is provided on the door edge side of the second door body 3, and a joint watertight member 6 is provided in the groove portion G5, to which the door edge side portion of the first door body 2 comes into close contact when the opening is closed, and the joint watertight member 6 has a first visible surface 62 that comes into close contact with the first side surface 56 of the groove portion G5, a second visible surface 63 that comes into close contact with the second side surface 57 of the groove portion G5, and a front surface 60 to which the door edge side portion of the first door body 2 comes into close contact when the opening is closed, and the joint watertight member 6 extends upward beyond the upper end 500 of the joint member 5. A fourth watertight member (upper watertight member) 7' is provided in the upper portion of the second door body 3 so as to cover the corner formed by the indoor side portion 31' and the door front end surface 32' of the upper portion of the second door body 3, and the fourth watertight member 7' has a lower portion 7B' located below the upper end 500 of the joint member 5, and an upper portion 7A' located above the upper end 500 of the joint member 5, and the upper portion of the first visible surface 62 of the joint watertight member 6 is adapted to be in close contact with the lower portion 7B' (fourth portion 73) and upper portion 7A' (second portion 71) of the fourth watertight member 7'. Here, the upper portion of the mating watertight member 6 tends to be pushed by the fourth watertight member (upper watertight member) 7' and deform so as to escape from the upper watertight member (Figure 15), and a gap may occur between the fourth watertight member 7' and the first visible surface 62 of the upper portion of the mating watertight member 6.

[0087] In this embodiment, an upper spacer 8' is provided between an upper portion of the second visible surface 63 of the watertight joint member 6 and the second side surface 57 of the groove portion G5 (FIGS. 6 to 10, 14, 17, and 18). In the illustrated embodiment, the upper spacer 8' is a rectangular plate-like element made of, for example, rubber or resin, but the shape and material are not limited thereto. The upper spacer 8' is provided between the upper portion of the second visible surface 63 of the watertight joint member 6 and the second side surface 57 of the groove portion G5 by being inserted into the groove portion G5 while being fixed in a predetermined position on the upper portion of the second visible surface 63 of the watertight joint member 6 (FIG. 17). The projected dimensions of the upper spacer 8' are approximately the same as the projected dimensions of the second side surface 57 of the groove portion G5 (Figures 7 to 9), and when the upper spacer 8' is installed, the upper spacer 8' is aligned with the upper end 500 of the joint member 5 (it may extend beyond the upper end 500), and the upper half portion of the upper spacer 8' faces the lower portion 7B' (fourth portion 73) of the fourth watertight member 7' across the joint watertight member 6 (Figures 6, 9, 10, 14).

[0088] In this embodiment, by providing an upper spacer 8' positioned between the upper portion of the second visible surface 63 of the watertight joint member 6 and the second side surface 57 of the groove portion G5, the upper portion of the watertight joint member 6 is prevented from deforming so as to escape from the fourth watertight member (upper watertight member) 7', and the adhesion between the upper portion of the first visible surface 62 of the watertight joint member 6 and the fourth watertight member (upper watertight member) 7' is improved. In this way, water leakage from between the fourth watertight member 7' and the first visible surface 62 of the upper portion of the watertight joint member 6 is prevented.

[0089] [Note] A double-wing waterproof door consisting of a first door body and a second door body, A joint member is provided on the indoor side of the door tip side of the second door body, and a joint watertight member extending in the height direction is provided on the joint member, When the opening is fully closed, the indoor side portion of the door tip side portion of the first door body is in close contact with the watertight joint member, The door-end side vertical frame that forms the door-end side portion of the first door body is made of a frame material that is U-shaped in cross section and is open toward the door end side, The door-end side vertical frame forming the door-end side portion of the second door body is made of a hollow frame material, It is a double-door, waterproof door. In one embodiment, a batten is provided on the outdoor side of the door edge portion of the first door body, and when the opening is fully closed, the batten faces the outdoor side of the door edge portion of the second door body. In one embodiment, the first door body is formed by a framework consisting of an upper frame, a lower frame, a vertical frame at the door front end, and a vertical frame at the door rear end that constitute the main frame, and multiple central ribs, and by bonding a surface material to the framework. In one embodiment, the second door body is formed by a framework consisting of an upper frame, a lower frame, a vertical frame on the door front side, a vertical frame on the door rear side, and multiple central ribs, and by adhering a surface material to the framework. In one embodiment, the vertical frame (frame material) on the door edge side of the first door body and the vertical frame (frame material) on the door edge side of the second door body are made of the same metal (e.g., stainless steel, steel, etc.) and have the same thickness. In one embodiment, the hollow frame material is A first member consisting of a front edge forming the door tip side end surface of the second door body, an outdoor side front edge, and an indoor side front edge; a second member formed in a U-shape in cross section from a prospective side, an outdoor-side prospective side, and an indoor-side prospective side; The outdoor side of the first member is fixed in a state where it overlaps with the outdoor side of the second member, The indoor side facing edge of the first member is fixed in a state where it overlaps with the indoor side facing edge of the second member. In one embodiment, the first member and the second member are fixed together by a fastening member (screw). In one embodiment, A four-way door frame consisting of an upper frame, a lower frame, and left and right vertical frames at the door end; An upper frame side watertight member, a lower frame side watertight member, and left and right door end frame side watertight members provided around the door frame; Equipped with The upper and lower end portions of the watertight joint member extend beyond the upper and lower ends of the joint member, When the opening is fully closed, the upper end portion is in close contact with the first door body and the upper frame side watertight member, and the lower end portion is in close contact with the first door body and the lower frame side watertight member. In one aspect, an upper watertight member is provided in the upper portion of the second door body, which is in close contact with the upper end portion of the upper frame side watertight member and the joint watertight member when the opening is fully closed. A lower watertight member is provided at the lower portion of the second door body, which is in close contact with the lower end portions of the lower frame side watertight member and the joint watertight member when the opening is fully closed. [Explanation of symbols]

[0090] 1 door frame 2 First door body 22 Door end vertical frame (cross-sectional U-shaped frame material) 22´ Door edge side edge 29 Mesh Board 3 Second door body 32 First member (door end vertical frame made of hollow frame material) 31´ Indoor side part (first side part) 32' Door end face (door end face) 38 Second member (door end vertical frame made of hollow frame material) 4. First watertight member (upper frame watertight member, lower frame watertight member, left and right door end frame watertight members, vertical frame watertight member) 5 Joint members 500 top end 501 Bottom end 56 First aspect 57 Second aspect 6 Second watertight member (joint watertight member) 60 Front part 62 First prospect 63 Second prospective surface 6A Lower protrusion 6B Upper protrusion 7. Third watertight member (lower watertight member) 7A Lower part 7B Upper part 7´ Fourth watertight member (upper watertight member) 7A´ Upper part 7B´ Lower part 8 Lower spacer 8´ Upper spacer G1~G5 Groove

Claims

1. A waterproof structure for a joint portion of a double-swing door device consisting of a first door body and a second door body, A joint member having a groove extending in the height direction is provided on the door tip side of the second door body, The groove portion has a first side surface and a second side surface facing each other, and the groove portion is provided with a first projected surface that is in close contact with the first side surface, a second projected surface that is in close contact with the second side surface, and a front surface with which the door edge side portion of the first door body is in close contact when the opening is closed. The watertight joint member extends downward beyond the lower end of the joint member, A lower watertight member is provided in the lower portion of the second door body so as to cover the corner formed by the first surface portion of the lower portion of the second door body and the door tip side prospective surface, The lower watertight member has an upper portion located above the lower end of the joint member and a lower portion located below the lower end of the joint member, The lower portion of the first visible surface of the joint watertight member is in close contact with the upper portion and the lower portion of the lower watertight member, A lower spacer is provided between a lower portion of the second visible surface of the joint watertight member and the second side surface of the groove portion. Waterproof structure for the joint of a double door device.

2. The upper portion of the lower watertight member and the lower spacer face each other with the watertight joint member interposed therebetween.

2. A waterproof structure for a joint portion of a double door device according to claim 1.

3. The watertight joint member extends upward beyond the upper end of the joint member, An upper watertight member is provided in the upper portion of the second door body so as to cover the corner formed by the first surface portion of the upper portion of the second door body and the door tip side prospective surface, The upper watertight member has a lower portion located below the upper end of the joint member and an upper portion located above the upper end of the joint member, The upper portion of the first visible surface of the joint watertight member is in close contact with the upper portion and the lower portion of the upper watertight member.

3. A waterproof structure for a joint portion of a double door device according to claim 1 or 2.

4. An upper spacer is provided between an upper portion of the second visible surface of the joint watertight member and the second side surface of the groove portion.

4. The waterproof structure for the joint portion of a double door device according to claim 3.

5. The lower portion of the upper watertight member and the upper spacer face each other with the watertight joint member interposed therebetween.

5. A waterproof structure for a joint portion of a double door device according to claim 4.

Images