JP7477850B1 - Waterproofing structure around fittings and its construction method - Google Patents

Abstract

[Problem] To provide a waterproof structure for the periphery of a fixture that can improve waterproofing while maintaining structural strength. [Solution] A waterproof structure 1 for the periphery of a fixture comprises a main body 10 and a hanging portion 22 provided either integrally with the main body or separately, the main body being formed in a flat plate shape and extending along the width direction of upper and lower frames provided on the fixture, and having an inclined portion 11 that inclines downward as it moves away from the fixture in the indoor/outdoor direction, a fixed portion 12 that is fixed to the lower side of the fixture at the upper end of the inclined portion, and a protruding plate 13 that protrudes downward at the lower end of the inclined portion, the hanging portion extending in the width direction and downward on the lower side of the inclined portion, and being provided at a position spaced apart from the lower end in the indoor/outdoor direction. [Selected Figure] Figure 1

Description

The present invention relates to a waterproof structure for the periphery of a fitting that is used together with the fitting and is formed between the fitting and the building frame, and a construction method for the same.

Conventionally, waterproofing materials such as flashings have been used to waterproof the joints between fittings such as sashes installed on roof balconies and the building frame. The fittings are attached to the inside of an opening formed in the frame, and a flashing is attached below the fittings in the space formed between the bottom of the fittings and the frame to prevent rainwater and other water from seeping into the interior of the building through the gap between the fittings and the frame.

There are two methods for attaching a flashing to a fixture: one in which the flashing is attached to the fixture beforehand and then filled with mortar (pre-attached flashing method), and one in which the flashing is attached to the fixture after a certain amount of mortar has been filled (post-attached flashing method). With the pre-attached flashing method, mortar is filled into the gap formed between the fixture or flashing and the structure from the inside to the outside, up to the tip of the structure. For example, Patent Document 1 discloses the pre-attached flashing method. In Patent Document 1, the flashing and the fixture are fixed to the structure by welding, and with the flashing fixed to the fixture, mortar is filled into the space formed between the bottom of the fixture and the structure.

With the pre-attached drain method, mortar is filled into the gap formed between the drain and the structure from the inside of the room toward the outside, but as the tip of the structure is quite far from the inside of the room, the filling work tends to be uneven and the surface of the mortar on the outside of the room tends to become uneven. As such, even if mortar with an uneven surface is waterproofed with a sealant, there is a possibility that sufficient waterproofing will not be achieved. One option to resolve this inconvenience is the post-attached drain method.

In the retrofit method, the fixture is attached to the structure, and the space formed between the bottom of the fixture and the structure is filled with mortar, while the exterior side of the structure is waterproofed with a sealant. The flashing is then fixed to the fixture with screws, etc., and the gap formed between the flashing and the structure is filled with mortar from the tip of the flashing toward the interior side.

Japanese Patent Application Laid-Open No. 7-208026

When considering the strength of the flashing's attachment to the fixture, the front-attached flashing method is superior because it requires welding. However, in this case, unevenness is likely to occur at the tip of the mortar, and sufficient waterproofing is not achieved. On the other hand, in terms of waterproofing function, the rear-attached flashing method is superior. However, in this case, the frame is covered with a sealant, and the sealant can be damaged by sparks that arise from the subsequent welding work between the flashing and the fixture, making it difficult to perform welding work when fixing the flashing to the fixture.

Therefore, the present invention aims to provide a waterproof structure around the edges of fittings that can improve waterproofing while maintaining structural strength, and a construction method for the same.

In response to the above problem, the present invention provides a waterproof structure for the periphery of a fitting that is used with the fitting and is formed between the fitting and a building frame, the waterproof structure comprising a main body and a hanging portion that is provided either integrally with the main body or separately, the main body being formed in a flat plate shape and extending along the width direction of the upper and lower frames provided on the fitting, and having an inclined portion that inclines downward as it moves away from the fitting in the indoor/outdoor direction, a fixed portion that is fixed to the lower side of the fitting at the upper end of the inclined portion, and a protruding plate that protrudes downward at the lower end of the inclined portion, the hanging portion extending in the width direction and downward on the lower side of the inclined portion, and being provided at a position spaced apart from the lower end in the indoor/outdoor direction.

The invention for a construction method for a waterproof structure around the edges of fittings is a construction method for a waterproof structure around fittings that is used together with the fittings and is formed between the fittings and a building frame, and is characterized by having an arrangement step of arranging the fittings to which the waterproof structure is attached on the building frame so that the hanging part and the tip of the building frame coincide on the outside of the room, a filling step of filling the lower space formed between the fittings arranged in the arrangement step and the building frame with mortar from the inside of the room down to the hanging part, and a first sealing step of covering the hanging part and the building frame with a sheet-like member from the outside of the room.

According to the present invention, the above configuration can improve the waterproof effect while maintaining structural strength.

1 is a vertical cross-sectional view showing an exterior wall portion of a building provided with a waterproof structure for the periphery of a fixture according to a first embodiment. FIG. FIG. 2 is a side view of the waterproof structure around the periphery of a fixture according to the first embodiment. FIG. 2 is a perspective view of an auxiliary member according to the first embodiment. 1A to 1C are diagrams showing the placement process in a construction method for waterproofing the edges of building fixtures. FIG. 13 is a diagram showing the filling process in the construction method for waterproofing the edges of building fixtures. 1A to 1C are diagrams showing a first sealing step in a construction method for waterproofing a fitting edge. 13 is a diagram showing a state in which a sheet-like member is fixed to a waterproof structure. FIG. 13 is a diagram showing a second sealing step in a construction method for waterproofing a fitting edge. FIG. FIG. 11 is a side view of a waterproof structure around a fitting edge according to a second embodiment. FIG. 10 is an exploded perspective view of an auxiliary member according to a second embodiment. FIG. 11 is a diagram showing a state in which the first member and the second member are connected in the second embodiment. FIG. 11 is a side view of a waterproof structure around a fitting edge according to a third embodiment. FIG. 13 is a perspective view of an auxiliary member according to a third embodiment. A diagram showing an example of construction using a waterproof structure around the edges of fittings in the third embodiment. A side view of a waterproof structure around a fitting edge according to a fourth embodiment. FIG. 13 is a perspective view of an auxiliary member according to a fourth embodiment. A diagram showing an example of construction using a waterproof structure around the edges of fittings in the fourth embodiment. FIG. 11 is a side view of a waterproof structure according to a modified example of the first embodiment. FIG. 13 is a perspective view of an auxiliary member according to a modified example of the first embodiment. FIG. 13 is a side view of a waterproof structure according to a modified example of the third embodiment. FIG. 13 is a side view of a waterproof structure according to a modified example of the fourth embodiment.

First Embodiment
Hereinafter, a waterproof structure for a fitting edge according to a first embodiment of the present invention (hereinafter simply referred to as a "waterproof structure") will be described with reference to the drawings. FIG. 1 is a diagram showing a schematic view of a waterproof structure 1. A structure 200 is composed of a lower structure 201 and an upper structure 202, and a fitting 100 is attached between the lower structure 201 and the upper structure 202. The waterproof structure 1 is applied to the fitting edge formed between the fitting 100 and the structure 200. The process of attaching the fitting 100 to the structure 200 will be described later.

The fixture 100 is composed of a lower frame 111, a lower frame rail 112, an upper frame 113, an upper frame rail 114, and glass 120. In the following description, the forward direction (indoor/outdoor direction) is the X direction, the facing direction (width direction of the lower frame 111) is the Y direction, and the up-down direction is the Z direction.

The waterproof structure 1 is attached to the lower side of the fitting 100 on the outdoor side. The waterproof structure 1 is composed of a main body 10 extending from the lower side of the fitting 100 to the outdoor side, and an auxiliary member 20 provided on the lower side of the main body 10. The main body 10 is a member that functions as a drain, and has an inclined portion 11, a fixed portion 12, and a protruding plate 13. The main body 10 is formed, for example, by bending a single steel plate so that the inclined portion 11, the fixed portion 12, and the protruding plate 13 are integrated.

The inclined portion 11 is formed in a flat plate shape and extends along the front direction (Y direction), and is inclined downward as it moves away from the fixture 100 in the front direction (X direction). Specifically, the inclined portion 11 is inclined in the front direction so that the protruding plate 13 side is lower than the fixed portion 12 side. The inclined portion 11 is formed to a dimension that covers the portion of the lower body 201 that protrudes to the outside of the room.

The fixing part 12 is fixed to the lower side of the fitting 100 at the upper end of the inclined part 11. Specifically, the fixing part 12 extends upward from one end of the inclined part 11 and is fixed to the lower frame rail 112 with a screw 140, and is further waterproofed on the outside of the room with a sealing material 141.

The protruding plate 13 protrudes downward from the lower end of the inclined portion 11. The tip of the protruding plate 13 may be bent toward the interior side (the fixing portion 12 side) to form a fitting portion 13a in the main body portion 10. The fitting portion 13a is open toward the interior side.

A first fixing member 131 extending in a substantially horizontal direction is provided on the lower side of the inclined portion 11, and a second fixing member 132 extending in a vertical direction is provided on the lower side of the fitting 100. One end of the first fixing member 131 is fixed to the lower part of the inclined portion 11 by welding in advance, and the other end of the first fixing member 131 is fixed to the second fixing member 132 by welding. The upper end of the second fixing member 132 is fixed to the lower part of the fitting 100 by welding in advance, and the second fixing member 132 is fixed to the building frame 200 together with the fitting 100. The waterproof structure 1 is fixed to the fitting 100 by welding via the first fixing member 131 and the second fixing member 132. This ensures the strength of the waterproof structure 1 when the fitting 100 is attached to the building frame 200.

Figure 2 is a side view of the waterproof structure 1, and Figure 3 is a perspective view of the auxiliary member 20. The upper surface of the inclined portion 11 is the upper surface 11a, and the lower surface is the lower surface 11b. The lower surface 11b is provided with an attachment portion 14 at a position spaced apart from the fitting portion 13a in the projection direction. The attachment portion 14 is formed in a concave shape that is open toward the fitting portion 13a. The attachment portion 14 may be formed continuously across the entire width of the inclined portion 11 in the projection direction (the depth direction of the paper in Figure 2), or multiple attachment portions may be provided at intervals.

The accommodation section 16 is formed by the fitting section 13a that is open on the indoor side (the mounting section 14 side) and the mounting section 14 that is open on the outdoor side (the fitting section 13a side). In the first embodiment, the auxiliary member 20 is provided separately from the main body section 10, and the auxiliary member 20 is accommodated in the accommodation section 16, so that the auxiliary member 20 is used in a state where it is integrated with the main body section 10. The accommodation section 16 may be integrally formed continuously across the entire width of the inclined section 11 below the inclined section 11, or multiple accommodation sections 16 may be arranged at intervals in the width direction.

The auxiliary member 20 is composed of a base portion 21, a hanging piece 22, and a bent portion 23. The base portion 21 and the bent portion 23 are integrally formed, for example, by bending a single metal piece, and the hanging piece 22, which is provided separately from the base portion 21, is fixed to the lower side of the base portion 21 by welding or the like to form the auxiliary member 20.

The base portion 21 is a flat member that expands in the front and rear directions along the inclined portion 11. The base portion 21 has approximately the same width as the inclined portion 11 in the front direction, and is formed with dimensions in the front direction that fit within the storage portion 16. The dimensions of the base portion 21 in the front direction may be set appropriately depending on the distance between the attachment portion 14 and the fitting portion 13a.

The hanging piece 22 is a flat member that extends downward from the base portion 21 and along the viewing direction (Y direction). The hanging piece 22 is provided on the lower side of the base portion 21 at a position separated from both the mounting portion 14 and the fitting portion 13a. When the auxiliary member 20 is integrated with the main body portion 10, the hanging piece 22 extends downward and functions as a hanging portion.

The hanging piece 22 is a member provided to divide the space between the inclined portion 11 and the lower structure 201 in the projection direction. Therefore, it is desirable that the tip side of the hanging piece 22 is close to or in contact with the lower structure 201 in the vertical direction (Z direction), and it is desirable that the hanging piece 22 coincides with the tip of the lower structure 201 in the projection direction. Considering that the distance between the auxiliary member 20 and the lower structure 201 can change depending on the installation conditions of the fitting 100 and the structure 200, it is desirable that the dimension on the lower side of the hanging piece 22 and its position in the projection direction can be changed.

The bent portion 23 is provided on the front side of the auxiliary member 20. The bent portion 23 is formed in a shape that bends from the tip side of the base portion 21, and is formed with dimensions that allow it to fit inside the fitting portion 13a.

When storing the auxiliary member 20 in the storage section 16, for example, first the rear end side of the base portion 21 is inserted into the attachment section 14, and with the rear end side of the base portion 21 fixed to the main body section 10, the base portion 21 is bent and the bent portion 23 is fitted into the fitting section 13a. Thereafter, the base portion 21 elastically returns to its original state, and the auxiliary member 20 is fixed to the main body section 10.

Next, the construction method for the waterproof structure 1 around the edges of the fixture will be explained with reference to Figures 4 to 8.

<Placement process>
4 is a diagram showing the arrangement process in the construction method of the waterproof structure 1. As shown in FIG. 4, in the arrangement process, the fitting 100 to which the waterproof structure 1 is attached is arranged on the structure 200 so that the hanging piece 22 as the hanging part and the tip of the structure 200 coincide on the outside of the room. Specifically, the fitting 100 to which the waterproof structure 1 is attached in a state in which the auxiliary member 20 is integrated with the main body 10 is attached is attached between the lower structure 201 and the upper structure 202. When the fitting 100 is arranged on the structure 200, a lower space S is formed by the waterproof structure 1 and the structure 200. The fitting 100 is provided with a second fixing member 132 extending vertically in advance, and the fitting 100 is fixed to the structure 200 by inserting the lower end of the second fixing member 132 into the lower structure 201. In addition, the second fixing member 132 may be provided in advance on the lower body 201 side instead of on the fitting 100, and the lower part of the fitting 100 may be fixed to the upper end of the second fixing member 132.

If the hanging piece 22 is located on the indoor side of the tip 201a in the projection direction, the amount of mortar that can be filled into the lower space S is reduced accordingly. Conversely, if the hanging piece 22 is located on the outdoor side of the tip 201a, the possibility of mortar leaking from the lower space S during the process of filling the mortar increases. Therefore, it is desirable that the hanging piece 22 and the tip 201a of the lower structure 201 coincide in the projection direction. In addition, from the viewpoint of improving the waterproofing of the lower space S, it is desirable that the hanging piece 22 is close to the structure 200 in the vertical direction (Z direction) when the fitting 100 is attached to the structure 200 with the auxiliary member 20 attached to the main body 10. In other words, when the vertical separation distance between the hanging piece 22 and the tip 201a (lower structure 201) is D, it is desirable that the value of the separation distance D between the hanging piece 22 and the tip 201a is small.

<Filling process>
Fig. 5 is a diagram showing the filling step in the construction method of the waterproof structure 1. As shown in Fig. 5, in the filling step, mortar 70 is filled from the inside of the room into the lower space S formed between the fitting 100 arranged in the arrangement step and the structure 200, up to the hanging piece 22. The mortar 70 is filled so as to fill the entire lower space S. Since the mortar 70 is filled from the inside of the room, the filling work can be carried out more smoothly compared to the case where the mortar 70 is filled from the outside of the room into the lower side of the main body 10.

By filling the mortar 70 until it comes into contact with the underside 11b of the inclined portion 11, it is possible to ensure a supporting force (proof strength) that will not deform the inclined portion 11 even if a load is applied from above to the main body 10. In addition, by filling the mortar 70 up to the position where it reaches the hanging piece 22, that is, up to the position where it reaches the tip 201a of the lower structure 201, it is possible to increase the waterproofing effect on the inside of the room. Furthermore, since the tip side of the mortar 70 abuts the hanging piece 22, it is possible to prevent the mortar 70 from leaking out to the outside of the room, and unevenness is less likely to occur at the end of the mortar 70 on the outside of the room, thereby further improving the waterproofing effect.

<First sealing step>
6 is a diagram showing a first sealing step in the construction method of the waterproof structure 1. As shown in FIG. 6, in the first sealing step, the hanging piece 22 and the lower structure 201 are covered with a sheet-like member 80 from the outside of the room. Specifically, the edge of the sheet-like member 80 laid on the floor surface of a roof balcony or the like is raised from the lower structure 201 toward the upper end of the hanging piece 22. By arranging the sheet-like member 80 in close contact with the hanging piece 22 and the lower structure 201 in this manner, it is possible to prevent rainwater and the like from entering the lower space S from the outside of the room.

The sheet-like member 80 is composed of a waterproof sheet 81 made of, for example, urethane rubber, and asphalt roofing 82, which is a synthetic fiber nonwoven fabric impregnated with asphalt. The asphalt roofing 82 is heated and melted relative to the hanging piece 22 to integrate the sheet-like member 80 with the hanging piece 22. This makes it possible to prevent mortar 70 from leaking out of the room from a gap that occurs between the hanging piece 22 and the lower structure 201.

As shown in FIG. 7, the sheet-like member 80 may be attached more firmly to the hanging piece 22 and the lower body 201 using screws 83 and a fixing plate 84. This prevents the sheet-like member 80 from peeling off and further enhances the waterproofing function.

<Second sealing step>
FIG. 8 is a diagram showing a second sealing step in the construction method of the waterproof structure 1. The first sealing step may be followed by a second sealing step. As shown in FIG. 8, in the second sealing step, the gap formed between the protruding plate 13 and the hanging piece 22 on the outdoor side of the sheet-like member 80 is sealed by a sealing member 90. The sealing member 90 is composed of, for example, a backing material 91 arranged on the inclined portion 11 side (upper side) and a lid member 92 arranged on the lower body 201 side (lower side). By providing the second sealing step, the waterproof effect at the outdoor side tip of the waterproof structure 1, i.e., the protruding plate 13 and the bent portion 23, can be improved.

In this way, in the waterproof structure 1 around the fitting edge according to the first embodiment, the fitting 100 to which the waterproof structure 1 is fixed in advance by welding is attached to the structure 200, and mortar 70 is filled into the lower space S formed between the waterproof structure 1, the fitting 100, and the structure 200. The tip portion on the outside of the lower space S of the mortar 70 filled from the inside of the room is restricted from moving to the outside of the room by the hanging piece 22 (hanging portion) provided on the waterproof structure 1. This allows the waterproof structure 1 to be firmly fixed to the fitting 100, and prevents unevenness from occurring on the tip side of the mortar 70. Therefore, the structural strength of the waterproof structure 1 can be maintained while improving the waterproof effect around the fitting edge.

Also, an auxiliary member 20 separate from the main body 10 may be provided, the inclined portion 11 may be provided with a housing portion 16 for housing the auxiliary member 20, and the auxiliary member 20 may be provided with a hanging piece 22 (hanging portion). In such a configuration, for example, an auxiliary member 20 having a hanging piece 22 at a different position in the front-to-rear direction (projection direction) can be attached to the main body 10. Therefore, the degree of freedom in the position at which the hanging piece 22 is provided relative to the main body 10 can be increased.

The storage sections 16 may also be arranged in a plurality at intervals in the width direction below the inclined section 11. With this configuration, the auxiliary member 20 can be stably attached to the main body section 10.

A part of the storage section 16 may be formed by the fitting section 13a. By utilizing a member that is already provided in the main body section 10, the storage section 16 can be provided efficiently.

Second Embodiment
Next, a waterproof structure 2 according to a second embodiment will be described with reference to Fig. 9 to Fig. 11. Note that the following mainly describes configurations different from the first embodiment, and components common to the first embodiment are given the same reference numerals as in the first embodiment, and detailed descriptions thereof will be omitted.

Figure 9 is a side view of the waterproof structure 2, and Figure 10 is an exploded perspective view of the auxiliary member 30. As shown in Figure 9, in the second embodiment, a pair of engagement recesses 15 are provided on the lower surface 11b side at a distance from each other in the projection direction (X direction) to form a storage section 17. The upper part of the auxiliary member 30 is stored in the storage section 17.

As shown in FIG. 10, the auxiliary member 30 is composed of a first member 40 and a second member 50. The first member 40 has a flat plate portion 41 extending in a substantially horizontal direction and a protruding piece 42 protruding from the lower surface side of the flat plate portion 41. Specifically, the first member 40 has a flat plate portion 41 extending along the find direction on the lower side of the inclined portion 11, and a plurality of protruding pieces 42 are provided along the find direction on the lower side of the flat plate portion 41. Note that only one protruding piece 42 may be provided. The protruding piece 42 has a long hole 42a formed in the find direction. The flat plate portion 41 is engaged between a pair of engagement recesses 15, so that the auxiliary member 30 is accommodated in the accommodation portion 17.

The second member 50 is configured to have a base plate 51 and a side plate portion 52 that protrudes to one side from a side surface 51a of the base plate 51. The base plate 51 is provided separately from the main body portion 10 and functions as a hanging portion extending downward from the inclined portion 11. Specifically, when the auxiliary member 30 is stored in the storage portion 17, the base plate 51 extends in the sight direction (Y direction) and downward (Z direction) on the lower side of the inclined portion 11, and is provided at a position separated from the protruding plate 13 in the sight direction (X direction). It is desirable that the base plate 51 is formed to have the same dimension as the width of the inclined portion 11 in the sight direction. It is also desirable that the base plate 51 is formed to have a dimension such that no gap is generated between the base plate 51 and the lower body 201 on the lower side. Since the base plate 51 is a member that spreads in a planar shape, it is possible to prevent the mortar 70 from leaking out to the outside of the room in the sight direction.

The side plate portion 52 is a flat plate-shaped member provided at a position corresponding to the protrusion 42 in the viewing direction, and multiple side plate portions 52 are provided on the indoor side of the base plate 51. Specifically, the side plate portions 52 are provided so that the distance between the protrusions 42 on the flat plate portion 41 is equal to the distance between the side plate portions 52 on the base plate 51. Note that only one side plate portion 52 may be provided. An insertion hole 52a is formed in the side plate portion 52 at a position that communicates with the long hole 42a.

Figure 11 is a diagram showing the state in which the first member 40 and the second member 50 are connected. As shown in Figure 11, the second member 50 is connected to the first member 40 on the lower side of the first member 40 by a bolt 61 and a nut 62 that screws onto the bolt 61. By shifting the position where the long hole 42a overlaps with the insertion hole 52a, the second member 50 can be moved forward and backward in the projection direction. This makes it possible to adjust the position of the substrate 51 relative to the lower body 201 with the auxiliary member 30 housed in the housing section 17.

The long hole may be formed in at least one of the first member 40 or the second member 50. Specifically, the second member 50 may be configured to be able to move back and forth in the projection direction relative to the main body 10 while the auxiliary member 30 is housed in the housing 17. The larger the dimension in the projection direction of the long hole formed in the first member 40 or the second member 50, the greater the movement distance of the second member 50 relative to the main body 10. Furthermore, when the long hole is formed in both the first member 40 and the second member 50, the greater the movement distance of the second member 50 relative to the main body 10.

In this way, in the waterproof structure 2 around the fitting edge according to the second embodiment, when the second member 50 is connected to the first member 40 in which a long hole 42a is formed in the projection direction, the point at which the second member 50 is connected to the first member 40 can be shifted to any position. This makes it possible to change the relative position of the auxiliary member 30 with respect to the main body 10 even after the auxiliary member 30 is brought to the work site while attached to the main body 10. Therefore, the position of the substrate 51, which functions as a hanging part, with respect to the lower structure 201 can be moved back and forth in the projection direction at the work site with a simple configuration.

In addition, a pair of engagement recesses 15 may be provided facing each other at a distance in the indoor direction on the lower side of the inclined portion 11, and the pair of engagement recesses 15 may form a storage portion 17. Furthermore, the storage portion 17 stores an auxiliary member 30. This makes it possible to prevent the auxiliary member 30 from coming off the main body portion 10.

Third Embodiment
Next, a waterproof structure 3 according to a third embodiment will be described with reference to Fig. 12 to Fig. 14. Note that the following mainly describes configurations different from the first and second embodiments, and components common to these embodiments are given the same reference numerals and detailed descriptions thereof will be omitted.

Figure 12 is a side view of the waterproof structure 3, Figure 13 is a perspective view of the auxiliary member 150, and Figure 14 is a diagram showing a state in which the lower space S is sealed by the waterproof structure 3 (an example of construction using the waterproof structure 3). As shown in Figure 12, in the third embodiment, the protruding plate 13 is provided with a connecting plate 13b that protrudes toward the upper end side of the inclined portion 11, and the auxiliary member 150 is fixed to the main body 10 via the connecting plate 13b. The overhanging portion 152 is connected to the connecting plate 13b, for example, by a screw 153, with at least a portion of it overlapping the connecting plate 13b.

As shown in FIG. 13, the auxiliary member 150 is configured to have a main plate portion 151 and an overhang portion 152. The main plate portion 151 is a plate-shaped member extending in the up-down direction (vertical direction). The overhang portion 152 is a plate-shaped member overhanging in a direction (approximately horizontal direction) intersecting the direction in which the main plate portion 151 extends. In other words, the overhang portion 152 protrudes in the X direction from the upper end of the main plate portion 151 and extends in the Y direction. The auxiliary member 150 is formed into an inverted L shape in side view by, for example, bending a single metal plate.

As shown in FIG. 14, the fitting 100 to which the waterproof structure 3 has been attached in advance, for example by welding, is placed on the structure 200. On the front side (outside the room) of the waterproof structure 3, the auxiliary member 150 previously connected to the connecting plate 13b seals the front side of the lower space S. The auxiliary member 150 only needs to be formed to a size sufficient to seal the front side of the lower space S.

The main plate portion 151 functions as a hanging portion that blocks the movement of the mortar 70 to the outside of the room, and the extension portion 152 is integrated with the main body portion 10 at the front side of the waterproof structure 3. The extension portion 152 is positioned in a position that coincides with the tip portion 201a in the projection direction, and is in surface contact with the tip portion 201a. In this way, the lower space S is sealed by the waterproof structure 3 and the main body 200.

With the outdoor side of the lower space S covered by the waterproof structure 3, a sheet-like member 80 composed of a waterproof sheet 81 and asphalt roofing 82 is in close contact with the lower structure 201 and the main plate portion 151. This makes it possible to prevent rainwater and the like from entering the lower space S from the outdoor side.

As shown in FIG. 14, the sheet-like member 80 may be attached more firmly to the main plate portion 151 and the lower body 201 using screws 83 and a fixing plate 84a. This prevents the sheet-like member 80 from peeling off and further improves the waterproofing function.

The gap formed between the fixed plate 84a and the connecting plate 13b may be sealed with a sealing member 90. This enhances the waterproofing effect at the tip of the waterproof structure 3 on the outdoor side, i.e., in the gap between the protruding plate 13 and the auxiliary member 150.

In this way, in the waterproof structure 3 around the fitting edge according to the third embodiment, the fitting 100 to which the waterproof structure 3 has been fixed by welding is attached to the structure 200, and the lower space S formed between the waterproof structure 3 and the fitting 100 and the structure 200 is filled with mortar 70. Here, the space formed between the lower surface 11b of the inclined portion 11 and the connecting plate 13b also functions as part of the lower space S. Therefore, the mortar 70 can be filled over the entire range from the upper end side to the lower end side of the inclined portion 11. In addition, the main plate portion 151 and the tip portion 201a can be in surface contact. Therefore, the adhesion between the waterproof structure 3 and the structure 200 can be ensured.

Fourth Embodiment
Next, a waterproof structure 4 according to a fourth embodiment will be described with reference to Fig. 15 to Fig. 17. Note that the following mainly describes configurations different from the first to third embodiments, and components common to these embodiments are given the same reference numerals and detailed descriptions are omitted.

Figure 15 is a side view of the waterproof structure 4, Figure 16 is a perspective view of the auxiliary member 170, and Figure 17 is a diagram showing a state in which the lower space S is sealed by the waterproof structure 4 (one example of construction using the waterproof structure 4). As shown in Figure 15, in the fourth embodiment, the auxiliary member 170 is provided below the inclined portion 11 and is integrated with the main body portion 10. Specifically, as shown in Figure 17, the auxiliary member 170 is disposed in a state in which it is sandwiched between the main body portion 10 and the framework 200. The auxiliary member 170 may be joined to the inclined portion 11 by welding or the like, or may be fixed to the inclined portion 11 by a fixing member such as a screw.

As shown in FIG. 16, the auxiliary member 170 is configured to have a base 171, a first extension portion 172, and a second extension portion 173. The base 171 is a plate-shaped member extending in the up-down direction (vertical direction). The first extension portion 172 and the second extension portion 173 are both plate-shaped members extending in a direction (approximately horizontal direction) intersecting the direction in which the base 171 extends. That is, the first extension portion 172 and the second extension portion 173 protrude from the upper end of the base 171 to opposite sides in the X direction and extend along the Y direction.

The auxiliary member 170 is formed into a Z-shape in side view, for example, by bending a single metal plate. The first extension portion 172 and the second extension portion 173 each protrude horizontally to opposite sides of the base portion 171 by the same distance. However, this is not limited to this, and the distances that the first extension portion 172 and the second extension portion 173 protrude from the base portion 171 may be different.

As shown in FIG. 17, the fitting 100 to which the waterproof structure 4 has been attached in advance, for example by welding, is placed on the structure 200. The auxiliary member 170 is placed in a state where it is inserted into the lower space S formed between the main body 10 and the structure 200 at the front side of the waterproof structure 4. The auxiliary member 170 is inserted into the lower space S while being elastically deformed, and then the auxiliary member 170 elastically returns to its original shape, thereby fixing the auxiliary member 170 to the main body 10 and the structure 200. The auxiliary member 170 may be fixed to the main body 10 in advance. It is sufficient that the auxiliary member 170 is formed to a size that is sufficient to seal the front side of the lower space S.

The base 171 is located between the lower surface 11b of the inclined portion 11 and the upper surface 201b of the structure, and functions as a hanging part that blocks the movement of the mortar 70 to the outside of the room while being flush with the tip 201a in the projection direction. In the lower space S, the first extension 172 is in surface contact with the lower surface 11b of the inclined portion 11, and the second extension 173 is in surface contact with the upper surface 201b of the structure. In this way, the lower space S is sealed by the waterproof structure 4 and the structure 200.

With the outdoor side of the lower space S covered by the waterproof structure 4, the auxiliary member 170 and the lower structure 201 are covered from the outdoor side by a sheet-like member 80 composed of a waterproof sheet 81 and asphalt roofing 82. This makes it possible to prevent rainwater, etc. from entering the lower space S from the outdoor side.

As shown in FIG. 17, the sheet-like member 80 may be more firmly attached to the auxiliary member 170 and the lower body 201 using screws 83 and a fixing plate 84. This prevents the sheet-like member 80 from peeling off and further enhances the waterproof function.

The gap formed between the auxiliary member 170 and the protruding plate 13 may be sealed with a sealing member 90. The sealing member 90 is composed of a backing material 91 and a cover member 92. This can improve the waterproofing effect at the tip of the waterproof structure 4 on the outdoor side, i.e., between the protruding plate 13 and the auxiliary member 170.

In this way, in the waterproof structure 4 around the fitting edge according to the fourth embodiment, the auxiliary member 170 is positioned by being inserted into the gap formed between the main body 10 and the structure 200. Therefore, there is no need to provide a structure for fixing the auxiliary member 170 on the main body 10 side, and it is possible to prevent the waterproof structure 4 from protruding too long toward the outside of the room. In addition, the auxiliary member 170 itself is formed as an elastically deformable member by bending a single metal plate. Therefore, the lower space S can be sealed without depending on the shape of the main body 10 or the structure 200.

(Modification)
18 is a side view of a waterproof structure 1A according to a modification of the first embodiment. In the first embodiment, the auxiliary member 20 provided separately from the main body 10 is provided with a hanging piece 22 as a hanging part, and this hanging piece 22 restricts the movement of the mortar 70 to the outside of the room. In the modification, instead, the main body 10 is provided with an extension piece 18 as a hanging part directly. The extension piece 18 is integrally formed with the main body 10 by welding. With this configuration, the number of parts can be reduced compared to the case where the auxiliary member 20 is provided separately.

Figure 19 is a perspective view of auxiliary member 20A according to a modified example of the first embodiment. In the first embodiment, hanging piece 22 formed as a separate body was fixed to base portion 21 by welding or the like. Auxiliary member 20A according to the modified example has bent portion 24 between base portion 21 and hanging piece 22, and base portion 21, hanging piece 22, bent portion 23, and bent portion 24 are integrally formed by bending and processing a single plate. Since the position of hanging piece 22 can be moved forward or backward simply by bending a single plate, the position of hanging piece 22 can be easily changed compared to a case involving welding work.

Figure 20 is a side view of a waterproof structure 3A according to a modification of the third embodiment. In the third embodiment, the main body 10 and the auxiliary member 150 are provided as separate, independent members. Instead, in the modification, a sealing portion 250 integrated with the main body 10 is provided on the protruding plate 13, and the sealing portion 250 has a protruding piece 250A that functions as a hanging portion. With this configuration, the number of parts can be reduced compared to when the auxiliary member 150 is provided as a separate member.

Figure 21 is a side view of a waterproof structure 4A according to a modification of the fourth embodiment. In the above-described fourth embodiment, the main body 10 and the auxiliary member 170 are provided as separate, independent members. Instead, in the modification, a sealing portion 270 is provided that is integrated with the main body 10, and the sealing portion 270 has a protruding piece 270A that functions as a hanging portion. With this configuration, the number of parts can be reduced compared to when the auxiliary member 170 is provided as a separate member.

Each embodiment of the present invention has been described in detail above with reference to the drawings, but the specific configuration is not limited to these embodiments, and design changes that do not deviate from the gist of the present invention are included in the present invention.

REFERENCE SIGNS LIST 1, 2, 3, 4 Waterproof structure 10 Main body 11 Inclined portion 12 Fixed portion 13 Protruding plate 13a Fitting portion 14 Mounting portion (accommodating portion)
15 Engagement recess (accommodation portion)
16 Storage section 17 Storage section 20 Auxiliary member 22 Hanging piece 40 First member 41 Flat plate section 42 Projection piece 42a Long hole 50 Second member 51 Base plate 52 Side plate section 52a Insertion hole 61 Bolt 62 Nut 70 Mortar 100 Fitting 151 Main plate section 152 Extension section 171 Base section 172 First extension section 173 Second extension section 200 Structure

Claims (8)

A waterproof structure for the periphery of a fitting formed between the fitting and a building frame, which is used together with the fitting,
The waterproof structure includes a main body and a hanging portion provided integrally with or separately from the main body,
The main body portion is
An inclined portion that is formed in a flat plate shape and extends along the width direction of the upper and lower frames provided on the fitting, and inclines downward as it moves away from the fitting in the indoor/outdoor direction;
A fixing portion fixed to the lower side of the fixture at the upper end of the inclined portion;
a protruding plate protruding downward from a lower end of the inclined portion,
The hanging portion extends in the width direction and downward on the lower side of the inclined portion and is provided at a position spaced from the lower end in the indoor/outdoor direction ,
The device further includes an auxiliary member provided separately from the main body portion,
The inclined portion is provided with a housing portion that houses the auxiliary member,
the auxiliary member has a hanging piece that extends downward when housed in the housing portion and functions as the hanging portion,
The main body portion is provided with a fitting portion in which a tip side of the protruding plate is bent toward the upper end side,
A concave mounting portion that is open toward the fitting portion is provided on the lower side of the inclined portion at a position spaced apart from the fitting portion in the indoor/outdoor direction,
A waterproof structure for the periphery of a fixture, characterized in that the accommodation portion is formed by the fitting portion and the mounting portion . A waterproof structure for the periphery of a fitting that is used together with the fitting and is formed between the fitting and a building frame,
The waterproof structure includes a main body and a hanging portion provided integrally with or separately from the main body,
The main body portion is
An inclined portion that is formed in a flat plate shape and extends along the width direction of the upper and lower frames provided on the fitting, and inclines downward as it moves away from the fitting in the indoor/outdoor direction;
A fixing portion fixed to the lower side of the fixture at the upper end of the inclined portion;
a protruding plate protruding downward from a lower end of the inclined portion,
The hanging portion extends in the width direction and downward on the lower side of the inclined portion and is provided at a position spaced from the lower end in the indoor/outdoor direction,
The device further includes an auxiliary member provided separately from the main body portion,
The inclined portion is provided with a housing portion that houses the auxiliary member,
the auxiliary member has a hanging piece that extends downward when housed in the housing portion and functions as the hanging portion,
A pair of engagement recesses are provided facing each other at positions spaced apart in the indoor/outdoor direction on the lower side of the inclined portion,
The pair of engagement recesses constitute the accommodation portion,
The auxiliary member is
A first member that is fixed to the main body portion while being accommodated in the accommodation portion;
a second member that is fixed to the main body portion via the first member when the first member is fixed to the main body portion,
The first member has a flat plate portion and a protruding piece protruding from a lower surface side of the flat plate portion,
The second member has a base plate as the hanging piece and a side plate portion protruding to one side from a side surface of the base plate,
At least one of the protruding piece and the side plate portion is formed with a long hole extending in the indoor/outdoor direction, and the other is formed with an insertion hole,
A waterproof structure for the edges of building fixtures, characterized in that the first member and the second member are connected so as to be able to move relatively along the indoor/outdoor direction by a bolt inserted into the long hole and the insertion hole, and a nut screwed onto the bolt. A waterproof structure for the periphery of a fitting that is used together with the fitting and is formed between the fitting and a building frame,
The waterproof structure includes a main body and a hanging portion provided integrally with or separately from the main body,
The main body portion is
An inclined portion that is formed in a flat plate shape and extends along the width direction of the upper and lower frames provided on the fitting, and inclines downward as it moves away from the fitting in the indoor/outdoor direction;
A fixing portion fixed to the lower side of the fixture at the upper end of the inclined portion;
a protruding plate protruding downward from a lower end of the inclined portion,
The hanging portion extends in the width direction and downward on the lower side of the inclined portion and is provided at a position spaced from the lower end in the indoor/outdoor direction,
Further comprising an auxiliary member provided separately from the main body portion,
The auxiliary member has a main plate portion extending in a vertical direction and a protruding portion protruding in a direction intersecting the extension direction of the main plate portion,
The protruding plate is provided with a connecting plate protruding from the upper end side,
A waterproof structure for the periphery of a fixture, characterized in that the protrusion is connected to the connecting plate. The waterproof structure for the periphery of a fixture according to claim 1 or 2 ,
A waterproof structure for the periphery of a fixture, characterized in that the storage sections are arranged at intervals in the width direction below the inclined section. A construction method for a waterproof structure around a fitting that is used together with the fitting and formed between the fitting and a building frame, comprising:
The waterproof structure includes a main body and a hanging portion provided integrally with or separately from the main body,
The main body portion is
An inclined portion that is formed in a flat plate shape and extends along the width direction of the upper and lower frames provided on the fitting, and inclines downward as it moves away from the fitting in the indoor/outdoor direction;
A fixing portion fixed to the lower side of the fixture at the upper end of the inclined portion;
a protruding plate protruding downward from a lower end of the inclined portion,
The hanging portion extends in the width direction and downward on the lower side of the inclined portion and is provided at a position spaced from the lower end in the indoor/outdoor direction,
an arrangement step of arranging the fitting having the waterproof structure attached thereto on the structure so that the tip of the hanging portion and the tip of the structure coincide on the outdoor side;
A filling process of filling a lower space formed between the fitting arranged in the arranging process and the framework with mortar from the inside of the room up to the hanging part;
A construction method for a waterproof structure around the edges of fittings, comprising a first sealing step of covering the hanging portion and the main body with a sheet-like material from the outside of the room. A construction method for the waterproof structure of the periphery of a fixture according to claim 5 ,
A construction method for a waterproof structure around the edges of building fittings, characterized in that after the first sealing step, a second sealing step is included in which a gap formed between the protruding plate and the hanging portion on the outdoor side of the sheet-like member is sealed with a sealing material. A construction method for the waterproof structure of the fitting periphery according to claim 5 or 6,
A construction method for a waterproof structure around the edges of building fixtures, characterized in that the hanging portion is integrally formed with the main body portion by welding. A construction method for the waterproof structure around the fitting according to claim 5 or 6,
The waterproof structure further includes an auxiliary member provided separately from the main body,
The auxiliary member has a base extending in a vertical direction, a first extending portion extending in a first direction intersecting with a direction in which the base extends, and a second extending portion extending in a second direction intersecting with the direction in which the base extends and being a direction opposite to the first direction,
A construction method for a waterproof structure around the edges of building fixtures, characterized in that the first extension portion is provided below the inclined portion.