JP2013249628A - Opening structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent infiltration of rainwater into a room through an opening frame.SOLUTION: An opening structure 1, which is installed to a plurality of wall materials 20-24 continuously provided in the width direction by continuous parts 25, 26, comprises: an opening frame 10; receiving parts 11, 12 holding the wall materials between them from below; a pair of weir members 14, 14b arranged so as to be close contact with the receiving parts 11, 12; and a drain part 16 installed in the opening frame 10. The pair of weir members 14, 14b are arranged so as to sandwich the continuous parts 25, 26 and the drain part 16 between them. Water seeping from the continuous parts 25, 26 to the receiving parts 11, 12 is discharged from the drain part 16.

Description

  The present invention relates to an opening structure in which an opening is formed.

  In recent years, as a wall material of a building, a plurality of panels made of transparent synthetic resin are arranged in the width direction as a wall material and are fitted into a rectangular frame. The connecting portions in the vertical direction of the wall material are connected by fitting the connecting protrusions to the connecting recesses (see, for example, cited documents 1 and 2).

  In order to improve the aesthetics of the wall structure, the sealing material is often not pressed into the wall material continuous part, but the wall material continuous part is not required to be pressed into the wall material continuous part. There is little risk of rainwater entering the indoors. This is because the continuous portion of the wall material formed by the continuous convex portion and the continuous concave portion has water-stopping properties.

JP 2009-293194 A JP 2011-32710 A

  However, in order to install an openable / closable window or ventilation fan on the wall surface, when an opening structure is formed in which the width direction extends over a plurality of wall materials, rainwater is placed indoors through an opening frame that forms the outer edge of the opening. There is a risk of intrusion. For example, when the opening frame has an upper frame, a side frame, and a lower frame that have a U-shaped receiving portion for sandwiching a wall material, rainwater collected in the upper frame is passed through the side frame. It is possible to enter indoors.

  Therefore, an object of the present invention is to provide an opening structure that prevents rainwater from entering the indoor via an opening frame in an opening structure in which the opening is formed across a plurality of wall members in the width direction. To do.

  In order to achieve the above object, an opening structure according to the present invention is an opening structure provided in a plurality of wall members arranged in the width direction by a connecting portion, and sandwiches an opening frame and a wall material from below. And a pair of weir members disposed so as to be in close contact with the receiving portion, and a drainage portion provided in the opening frame, and the pair of weir members include the connecting portion and the drainage portion. It arrange | positions so that it may pinch | interpose in between, The water which oozed out to the receiving part from the connection part may be discharged | emitted from a drain part.

  Furthermore, in the opening structure according to the present invention, the drainage portion is preferably formed by a gap between sealing materials provided in the opening frame.

  According to the opening structure of the present invention, the pair of dam members are arranged so as to sandwich the continuous portion and the drainage portion therebetween, and water that has oozed out from the continuous portion to the receiving portion is discharged from the drainage portion. Therefore, it has become possible to provide an opening structure that prevents rainwater from entering the indoors through the continuous portion and the opening frame.

It is a figure which shows an example of the external appearance of the building which has the opening structure which concerns on this invention. It is a partial enlarged front view of the opening structure shown in FIG. It is a partial expanded rear view of the opening structure shown in FIG. FIG. 3 is a partially exploded perspective view from the direction of arrow A in FIG. 2. (A) is BB 'sectional drawing of FIG. 2, (b) is CC' sectional drawing of FIG. 2, (c) is DD 'sectional drawing of FIG. 2, (d) is EE of FIG. 'Is a cross-sectional view. The figure for demonstrating the assembly procedure of opening structure (1). (A) is a figure (2) for demonstrating the assembly procedure of an opening structure, (b) is a perspective view of a supporting member. The figure for demonstrating the assembly procedure of an opening structure (3). The figure for demonstrating the assembly procedure of an opening structure (4). The figure for demonstrating the assembly procedure of an opening structure (5). The figure for demonstrating the assembly procedure of an opening structure (6). The figure for demonstrating the assembly procedure of an opening structure (7). The figure for demonstrating the assembly procedure of an opening structure (8).

  Hereinafter, the opening structure according to the present invention will be described with reference to FIGS. First, the configuration of the opening structure according to the present invention will be described with reference to FIGS.

  FIG. 1 is a diagram showing an example of the appearance of a building having an opening structure according to the present invention.

  A building 100, which is a gymnasium, includes a base 101, a plurality of pillars 102, a plurality of beam parts 103, 103a, 103b, a pair of intermediate pillars 104a, 104b, a lower wall part 105, and a plurality of doors. A portion 106 and a roof 107 are provided. Furthermore, the building 100 has an opening structure 1 disposed above the beam portion 103 and below the roof 107.

  Each of the plurality of column portions 102 has H-shaped steel, and is disposed on the base portion 101 to form a vertical frame of the building 100. Each of the plurality of beam portions 103, 103 a, and 103 b has H-shaped steel, and is joined by a joining member such as a bolt or a nut so as to be orthogonal to the plurality of column portions 102 to form a horizontal frame of the building 100.

  The pair of intermediate pillars 104a and 104b have angle steel, and are joined to end portions of the beam portion 103, the roof 107, and the beam portions 103a and 103b by a joining member. The pair of intermediate posts 104 a and 104 b are welded to the opening frame 10 that forms the frame of the window 30.

  The lower wall portion 105 includes an outer wall material, a heat insulating material, and an inner wall material, and is supported by the plurality of column portions 102. Each of the plurality of doors 106 includes a pair of steel plates and an inorganic heat insulating material inserted between the pair of steel plates, and a desired fireproof performance is achieved. Each of the plurality of doors 106 is formed so as to be spread outward by a handle disposed at the center. The roof 107 has a pair of inclined surfaces formed of a translucent resin.

  The opening structure 1 is disposed inside a frame formed by the opening frame 10, the plurality of wall members 20, 21, 22, 23, and 24, the upper frame, the pair of side frames, and the lower frame of the opening frame 10. And a window 30.

  The structure of the opening frame 10 will be described with reference to FIGS. 2 to 4 and 5 (a) to 5 (c).

  FIG. 2 is a partially enlarged front view of the periphery of the opening frame 10 of FIG. FIG. 3 is a partially enlarged rear view of the periphery of the opening frame 10 of FIG.

  The opening frame 10 includes a first base material 11, a second base material 12, four support members 13, a pair of weir members 14 a and 14 b, and an outer surface sealing material 15. Further, a drainage portion 16 is formed at the center of the upper frame of the opening frame 10.

  The first base material 11 has four L-shaped angles connected by 45-degree cut alignment so as to form a square frame, and forms an upper frame, a pair of side frames, and a lower frame. One end of each of the pair of side frames is joined to both ends of the upper frame, and the other end is joined to both ends of the lower frame.

  The upper frame of the first base material 11 forms a bottom plate portion and a rear plate portion of the upper frame of the opening frame 10. The lower frame of the first base material 11 forms an upper plate portion and a rear plate portion of the lower frame of the opening frame 10. A pair of side frames on the side of the first base material 11 respectively form a side plate portion and a rear plate portion of the side frame of the opening frame 10.

  The first base material 11 is welded and joined to a pair of intermediate pillars 104a and 104b that are joined to the beam portions 103a and 103b via angle steel 27 that is a joining member.

  The second base material 12 has four Z-type stainless steel pressed green materials welded so as to form a rectangular frame, and the front plate portion of the opening frame 10 having a concave portion together with the first base material 11. Form. The second base material 12 is joined to the first base material 11 via joint members such as bolts, nuts, and angle steels (not shown) in the pair of side frames and the lower frame.

  FIG. 4 is a partially exploded perspective view from the direction of arrow A in FIG.

  Wall materials 21 to 23 indicated by alternate long and short dash lines are sandwiched from below by a receiving portion formed on the upper frame by the first base material 11 and the second base material 12. The wall materials 21 and 23 are sandwiched between the first base material 11 and the second base material 12 by the side frames.

  Four support members 13 and a pair of weir members 14a and 14b are arranged in the receiving portion of the upper frame of the opening frame 10, respectively.

  Each of the four support members 13 is a steel material having a cap-shaped cross section, and supports the wall materials 21 to 23 from below. Specifically, the support member 13 disposed outside the dam member 14a supports the wall material 21, and the two support members 13 disposed between the pair of dam members 14a and 14b serve as the wall material 22. The support member 13 that is supported and disposed outside the weir member 14 b supports the wall member 23.

  Each of the four support members 13 is fastened to the second base material 12 by screws 19. Moreover, each of the four support members 13 is pressed by any one of the wall materials 21 to 23 from above.

  Each of the pair of weir members 14 a and 14 b has a sealing material and is disposed so as to be in close contact with the first base material 11 and the second base material 12. That is, each of the pair of dam members 14 a and 14 b is in close contact with the front plate portion of the opening frame 10 formed by the second base material 12, and the other end of the opening frame 10 formed by the first base material 11. It arrange | positions so that it may contact | adhere to a backplate part. Further, the pair of dam members 14 a and 14 b are arranged so that the lower ends thereof are in close contact with the bottom plate portion of the opening frame 10 formed by the first base material 11.

  The pair of weir members 14a and 14b are arranged so as to sandwich the connecting portion 25 between the wall member 21 and the wall member 22 and the connecting portion 26 between the wall member 22 and the wall member 23. By adopting such an arrangement, the rainwater that has flowed into the upper frame of the opening frame 10 via the continuous portions 25 and 26 is separated from the rear plate portion and the bottom plate portion of the upper frame of the first base material 11 and the second plate. The water receiving portion is formed by the base 12 and the pair of weir members 14a and 14b.

  Further, the pair of dam members 14 a and 14 b are arranged so as to sandwich the drainage portion 16 formed at the center of the upper frame of the opening frame 10. By adopting such an arrangement, a water receiving portion formed by the rear and bottom plate portions of the upper frame of the first base material 11, the second base material 12, and the pair of weir members 14a and 14b. The stopped rainwater is discharged from the draining portion 16.

  The outer surface sealing material 15 is arranged along the outer edge of the opening 3 in a recess formed by the bottom surface portion of the first base material 11 and the second base material 12 in the front plate portion of the opening frame 10. The outer surface of the outer surface sealing material 15 is disposed so as to form a flat surface with the outer surface of the second substrate 12. On the other hand, the inner surface of the outer surface sealing material 15 is attached so that a space having a width equivalent to the height of the head of the screw 19 is formed except for a portion where the pair of dam members 14a and 14b are arranged. The inner surface of the outer surface sealing material 15 where the pair of weir members 14a and 14b is disposed is attached so as to embed a recess formed by the first base material 11 and the second base material 12.

  FIG. 5A is a cross-sectional view taken along the line BB ′ in FIG.

  The receiving parts formed by the first base material 11 and the second base material 12 are wall materials 21 to 23 through backup materials 17f and 17b and wall material sealing materials 18f and 18b in the upper frame of the opening frame 10. Pinch. The backup materials 17f and 17b and the wall material sealing materials 18f and 18b are arranged across the upper frame, the pair of side frames, and the lower frame, respectively. The receiving parts formed by the first base material 11 and the second base material 12 are provided with wall materials 21 and 23 with a pair of side frames via backup materials 17f and 17b and wall sealants 18f and 18b, respectively. The wall material 21, 23, 24 is clamped from above by the lower frame.

  The support member 13 supports the lower surface of the wall member 23 from below. The support member 13 is joined to the second base material 12 via the screw 19, but the bottom surface portion of the first base material 11 and the lower end of the second base material 12 are joined by a joining member or an adhesive member. Absent. For this reason, the clearance gap formed between the bottom face part of the 1st base material 11 and the lower end of the 2nd base material 12 functions as a flowing water path which the rain water which penetrate | invaded into the upper frame of the opening frame 10 oozes out. In the portion where the support member 13 is disposed, the inner surface of the outer surface sealing material 15 is attached so that a space having a width equivalent to the height of the head of the screw 19 is formed. The rainwater that has reached the space formed on the inner surface of the outer surface sealing material 15 through the gap formed between the lower end of the second base material 12 is drained along the inner surface of the outer surface sealing material 15. Flowing.

  FIG. 5B is a CC ′ sectional view of FIG.

  In the portion where the weir member 14 a is disposed, the outer surface sealing material 15 is embedded so as to fill a recess formed in the front plate portion of the opening frame 10. Similarly, in the portion where the dam member 14 b is disposed, the outer surface sealing material 15 is embedded so as to fill a recess formed in the front plate portion of the opening frame 10. By adopting such an arrangement, in the portion where the pair of dam members 14a and 14b of the upper frame of the opening frame 10 are arranged, the dam members 14a and 14b and the outer surface sealing material 15 The water path from the part sandwiched between the two to the outside is completely blocked.

  FIG.5 (c) is DD 'sectional drawing of FIG.

  The drainage portion 16 is formed at the center of the upper frame of the opening frame 10. The lower end surface of the drainage portion 16 is formed to be lower than the upper ends of the pair of dam members 14a and 14b. For this reason, the water accumulated in the water receiving portion formed by the rear plate portion and the bottom plate portion of the upper frame of the first base member 11, the second base member 12, and the pair of weir members 14a and 14b Without overflowing the weir members 14 a and 14 b, the water is discharged to the outside of the opening frame 10 through the drainage portion 16.

  FIG. 5D is a cross-sectional view taken along the line EE ′ of FIG.

  With reference to FIG.5 (d), the wall material 22 is demonstrated. Here, only the wall member 22 will be described, but the other wall members 20, 21, 23 and 24 have the same structure as the wall member 22.

  The wall material 22 includes a wall body portion including a plurality of hollow portions and a sheet material such as an aluminum tape that seals an opening end portion of the wall body portion. The wall portion is formed by extruding a lightly colored translucent resin (polycarbonate), and has a continuous protrusion 22a and a continuous recess 22b at both ends. In addition, a light-resistant paint containing an ultraviolet absorber is applied to the surface of the wall portion, or a weather resistant layer containing an ultraviolet absorber is provided by coextrusion molding so that fading due to ultraviolet rays can be prevented. Is being processed.

  The continuous protrusion 22a has a hollow shape having a U-shaped cross section with a slightly expanded tip. The continuous recess 22b is formed by a pair of extending portions that are opposed and spaced apart. The continuous projection 22 a is fitted with the continuous recess 21 b of the wall member 21 to form a continuous portion 25. The continuous recess 22 b is fitted with the continuous protrusion 23 a of the wall member 23 to form a continuous portion 26. Since the continuous portions 25 and 26 each have the continuous convex portion 22a and the continuous convex portion 23a, rainwater that has entered the continuous portions 25 and 26 from the outer surface does not reach the inner surface.

  Further, the vicinity of the continuous protrusions 22a and the continuous recesses 22b is configured such that a space 22c having a T-shaped cross section is formed by fitting with the adjacent continuous portions. The wall member 22 and the building 100 can be connected to each other by inserting a fixture that can be attached to the building 100 in the T-shaped space 22c.

  As shown in FIG. 3, the wall materials 20 and 21 are joined to the beam portion 103 a by a fixture 28. Further, the wall materials 20 and 23 are joined to the beam portion 103b by a fixture 28.

  As shown by the hatched arrows in FIG. 4, rainwater that has entered the connecting portions 25 and 26 from the outer surface flows from the upper portion to the lower portion of the connecting portions 25 and 26, and the upper frame of the opening frame 10. It collects in the receiving part. Since the continuous portions 25 and 26 are disposed between the pair of dam members 14a and 14b, the rainwater that has entered the continuous portions 25 and 26 is caused by the rear plate portion and the bottom plate portion of the upper frame of the first base material 11. And the second base material 12 and the water receiving part formed by the pair of weir members 14a and 14b.

  The rainwater collected in the water receiving portion formed by the rear plate portion and the bottom plate portion of the upper frame of the first base material 11, the second base material 12, and the pair of weir members 14 a and 14 b is the first base material 11. It flows in the direction of the drainage portion 16 using a gap formed between the bottom surface portion and the lower end of the second substrate 12 as a flowing water path. Rainwater that has reached the drainage portion 16 is discharged to the outside of the opening frame 10 through the drainage portion 16.

  The window 30 is a side sliding window that can be opened and closed by pushing the glass surface surrounded by the window frame 32 outward with the upper side of the glass surface as an axis. The window 30 is opened and closed by operating the opening / closing operation unit 31.

  Next, the assembly procedure of the opening structure will be described in order with reference to FIGS.

  FIG. 6 is a first explanatory diagram for explaining an assembly procedure of the opening structure 1 and shows a state in which the first base material 11 is attached to the pillars 104 a and 104 b of the building 100.

  The studs 104a and 104b are joined to the structural material of the roof 107 of the building 100 at the upper side and the lower side. Further, the studs 104 a and 104 b are joined to the beam portions 103 a and 103 b of the building 100. The first base material 11 is joined to the housing of the building 100 by welding and joining the intermediate pillars 104 a and 104 b joined to the housing of the building 100.

  FIG. 7A is a second explanatory diagram for explaining the assembly procedure of the opening structure 1 and shows a state in which four support members 13 are arranged on the bottom plate portion of the upper frame of the first base material 11. . Of the four support members 13, the support member disposed at the left end supports the left wall member 21 from below, the support member disposed at the right end supports the right wall member 23 from below, and the other members The two support members are arranged so as to support the central wall member 22 from below.

  FIG. 7B is a perspective view of the support member 13. The support member 13 includes a first plate portion 13a, a second plate portion 13b, a third plate portion 13c, and a fourth plate portion 13d. The 2nd board part 13b is formed so that a board surface may mutually contact in one side of the 1st board part 13a. The third plate portion 13c is formed so as to be in contact with one side of the second plate portion 13b so that the plate surfaces are orthogonal to each other and to face the first plate portion 13a. The fourth plate portion 13d is the side of the third plate portion 13c facing the side where the second plate portion 13b and the third plate portion 13c are in contact, and the plate surface of the third plate portion 13c is orthogonal to the plate surface of the third plate portion 13c. And it is formed to extend in the opposite direction to the second plate portion 13b.

  The support member 13 has an outer surface of the third plate portion 13c facing the rear plate surface of the upper frame of the first base material 11, and a lower surface of the fourth plate portion 13d is a bottom plate portion of the upper frame of the first base material 11 It arrange | positions so that the upper surface of may be touched.

  FIG. 8 is a third explanatory diagram for explaining the assembly procedure of the opening structure 1 and shows a state in which a pair of weir members 14 a and 14 b are arranged on the bottom plate portion of the upper frame of the first base material 11. One weir member 14 a is disposed between the support member 13 disposed at the left end to support the left wall member 21 and the adjacent support member 13. The other weir member 14 b is disposed between the support member 13 disposed at the right end portion for supporting the right wall member 23 and the adjacent support member 13. The pair of weir members 14a and 14b are disposed so as to be in close contact with the rear plate portion and the bottom plate portion of the first base material 11, respectively.

  FIG. 9 is a fourth explanatory diagram for explaining the assembly procedure of the opening structure 1 and shows a state in which the backup material 17 b is bonded to the rear plate portions of the four frames of the first base material 11.

  FIG. 10 is a fifth explanatory view for explaining the assembly procedure of the opening structure 1 and shows a state in which the wall materials 20 to 24 are installed. The wall members 20 to 24 are joined to the beam portion 103a or 103b of the building 100 via the fixture 28 in a state where the wall members 20 to 24 are continuously provided with the adjacent wall member via the connecting portion. The wall material 21 is supported from below by a support member 13 disposed at the left end of the upper frame of the opening frame 10. The wall material 22 is supported from below by two support members 13 arranged in the center of the upper frame of the opening frame 10. The wall member 23 is supported from below by a support member 13 disposed at the right end of the upper frame of the opening frame 10. A fixture 28 is disposed between the wall member 20 and the wall member 21 and between the wall member 20 and the wall member 23, and is joined to the beam portions 103a and 103b, respectively.

  The connecting portion 25 between the wall member 21 and the wall member 22 and the connecting portion 26 between the wall member 22 and the wall member 23 are arranged so as to be sandwiched between the pair of dam members 14a and 14b.

  FIG. 11 is a sixth explanatory view for explaining the assembly procedure of the opening structure 1 and shows a state in which the second base material 12 of the opening frame 10 is fastened. The second base material 12 is fastened to the support member 13 by screws 19 in the upper frame of the opening frame 10. The second base 12 is fastened to the angle steel joined to the first base 11 with screws 19 in the pair of side frames and the lower frame of the opening frame 10.

  After the second base material 12 is fastened to the first base material 11, the backup material 17 f and the wall material sealing material 18 f are sequentially sandwiched between the wall materials 21 to 24 and the second base material 12. Next, the wall material sealing material 18 b is sandwiched between the wall materials 21 to 24 and the first base material 11.

  FIG. 12 is a seventh explanatory diagram for explaining the assembly procedure of the opening structure 1 and shows a state in which the outer surface sealing material 15 is attached to the concave portion of the front plate portion of the opening frame 10. The inner surface of the outer surface sealing material 15 is attached so that a space having a width equivalent to the height of the head of the screw 19 is formed except for a portion where the pair of dam members 14a and 14b are disposed. In the portion where the pair of dam members 14 a and 14 b are arranged, the inner side surface of the outer surface sealing material 15 is embedded so as to fill a recess formed in the front plate portion of the opening frame 10.

  A PE packer 40 is packed at a position where the drainage portion 16 is formed so as to penetrate the outer surface sealing material 15. In the PE packer 40, after the outer surface sealing material 15 is hardened, the PE packer 40 is removed, and the water draining portion 16 is formed.

  FIG. 13 is an eighth explanatory view for explaining the assembly procedure of the opening structure 1 and shows a state in which the window 30 is arranged in the opening 3. The window 30 is joined to the opening frame 10 via a window frame 32 disposed so as to surround the periphery.

  Hereinafter, other embodiments will be described.

  In the opening structure 1, the three wall members 21 to 23 are sandwiched by the receiving portion of the upper frame of the opening frame 10, but two wall members are sandwiched by the receiving portion of the upper frame of the opening frame 10 or There may be four or more. Regardless of the number of wall members sandwiched by the upper frame of the opening frame 10, all the continuous portions between the wall members sandwiched by the receiving portion of the upper frame of the opening frame 10 are all a pair of weir members 14a and 14b so as to be sandwiched between 14b.

  Further, in the opening structure 1, the drainage portion 16 is a through hole formed in the outer surface sealing material 15, but the drainage portion may be formed as a through hole penetrating the second base material 12. Even in this case, the lower end surface of the drainage portion is positioned lower than the height of the pair of dam members 14a and 14b, and is formed between the pair of dam members 14a and 14b. In this case, the outer surface sealing material 15 is not embedded in a portion corresponding to the drainage portion. On the other hand, in the portion other than the drainage portion, the outer surface sealing material 15 may be attached so as to form a space having a width equivalent to the height of the head of the screw 19 as in the opening structure 1. You may adhere so that the recessed part formed with the base material 11 and the 2nd base material 12 may be embedded.

  In the opening structure 1, the wall materials 21 to 23 are supported from below by the four support members 13, but the support member 13 is omitted and the wall materials 21 to 23 are formed by the bottom plate portion of the first base material 11. It may be supported from below. If the support member 13 is omitted, the capacity of the water receiving portion that stores rainwater is reduced. However, since rainwater is discharged from the drainage portion 16, there is a low risk of rainwater entering the room.

  In the opening structure 1, the pair of weir members 14a and 14b are formed of a sealing material, but may be formed of other members capable of blocking water such as rubber or foam rubber.

  Further, in the opening structure 1, the window 30 is a horizontal sliding window, but other types of windows such as a sliding window, a protruding window, or a vertical sliding window may be arranged, and a ventilation fan is used instead of the window 30. It may be arranged.

  Moreover, in the opening structure 1, although the wall part of the wall materials 20-24 is formed with a polycarbonate, you may form with another raw material.

  Although the embodiment has been described above, all examples and conditions described herein are described for the purpose of helping understanding of the concept of the invention applied to the invention and the technology. It is not intended to limit the scope of the invention, and the construction of such examples in the specification does not indicate the advantages and disadvantages of the invention. Although embodiments of the invention have been described in detail, it should be understood that various changes, substitutions and modifications can be made without departing from the spirit and scope of the invention.

DESCRIPTION OF SYMBOLS 1 Opening structure 3 Opening part 10 Opening frame 14a, 14b Weir member 16 Drain part 20, 21, 22, 23, 24 Wall material 25, 26 Connection part between wall materials 30 Window 100 Building

Claims (2)

An opening structure provided in a plurality of wall members provided in a width direction by a continuous portion,
An opening frame;
A receiving part for sandwiching the wall material from below;
A pair of weir members arranged to be in close contact with the receiving portion;
A drainage portion provided in the opening frame,
The pair of weir members are arranged so as to sandwich the continuous portion and the drainage portion therebetween, and water that has oozed out from the continuous portion to the receiving portion is discharged from the drainage portion.
An opening structure characterized by that.   The opening structure according to claim 1, wherein the drainage portion is formed by a gap between sealing materials provided in the opening frame.

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