JP7444699B2 - Balcony installation structure - Google Patents

Description

The present invention relates to a balcony installation structure.

BACKGROUND ART Buildings such as houses include unit buildings constructed by a unit construction method (for example, see Patent Document 1). A unit building is a building that can be constructed in a short period of time by transporting building units manufactured in advance at a factory to a construction site and assembling them at the construction site. In such a unit building, a building unit with an entrance/exit on the outside (opening unit or unit with an opening) and a balcony unit are installed side by side, so that people can enter and exit from the opening unit through the entrance/exit to the balcony unit. I have to. The entrance/exit portion is formed in the opening unit as a window facing the balcony unit. A balcony unit is manufactured in advance as a unitized balcony at a factory, transported to a construction site together with the balcony unit, and installed in the unit building together with the balcony unit.

Japanese Patent Application Publication No. 2018-66266

However, in a unit building where an opening unit and a balcony unit are installed side by side, the floor height of the opening unit and the balcony unit are different, so there is a relatively high step difference between the opening unit and the balcony unit. is occurring.

Therefore, the main purpose of the present invention is to contribute to improving the above-mentioned problems.

To solve the above problems, the present invention
an opening unit having an entrance/exit portion and a balcony unit are arranged side by side with the entrance/exit portion facing toward the balcony unit;
A draining sheet is hung down from the balcony unit side of the opening unit,
A balcony installation structure in which a rising portion is provided at an edge of the floor plate of the balcony unit on the side of the opening unit,
A horizontally curved part is formed at the upper end of the rising part,
The draining sheet is characterized in that it is bonded to the horizontally curved portion so as to overlap the horizontally curved portion, with the lower end thereof facing sideways.

According to the present invention, with the above configuration, it is possible to suppress the step difference between the opening unit and the balcony unit to a low level.

FIG. 1 is a perspective view of a unit building equipped with a balcony installation structure according to the present embodiment. FIG. 3 is a perspective view showing a unit frame of the building unit. FIG. 3 is a partial vertical cross-sectional view showing the balcony installation structure. It is a partial enlarged view of the balcony installation structure. Of these, (a) is a vertical cross-sectional view of the position of the entrance/exit part in FIG. 3, and (b) is a vertical cross-sectional view of the position of the wall part (portion without the entrance/exit part). FIG. 4(a) is an enlarged side view of the vicinity of the clip in FIG. 4(a). It is a figure which shows the construction procedure of a balcony installation structure in order. Among these, (a) is a state in which the opening unit is installed from above on the side of the balcony unit, (b) is a state in which the lower end of the drainer sheet is in contact with the horizontal curved part, and (c) is a state in which the lower end of the drainer sheet and the horizontal This is a state in which the clip is attached from the side between it and the curved part. FIG. 3 is a longitudinal cross-sectional view showing a balcony installation structure according to a comparative example. FIG. 3 is a diagram showing a state in which floor finishing material is lifted by the dry floating floor finishing method.

Hereinafter, this embodiment will be described in detail using the drawings.
1 to 8 are for explaining this embodiment.

<Structure> The structure of this embodiment will be explained below.

As shown in FIG. 1, a building such as a house is made into a unit building 1 constructed by the unit construction method. The unit building 1 is a building that can be constructed in a short period of time by transporting building units 2 manufactured in advance at a factory to a construction site and assembling them at the construction site.

In such a unit building 1, a building unit 2 (opening unit 4 or a unit with an opening) having an entrance/exit section 3 on the outer surface and a balcony unit 5 are arranged in a state where the entrance/exit section 3 is directed toward the balcony unit 5 side. Install them in parallel. The entrance/exit part 3 is formed on the outer surface of the opening unit 4 on the balcony unit 5 side as a window facing the balcony unit 5 or the like. The entrance/exit portion 3 is sized to reach the lower part of the opening unit 4. The balcony unit 5 is a unit made of a balcony and manufactured in advance at a factory. The balcony has, for example, a floor section 5a and a handrail section 5b, and the balcony unit 5 is composed of at least a main part of the floor section 5a. The handrail portion 5b may be attached to the floor portion 5a at a factory or may be attached to the floor portion 5a at a construction site. In this embodiment, the opening unit 4 and the balcony unit 5 are installed on the upper floor of the unit building 1.

Here, the building unit 2 (including the opening unit 4) has a substantially rectangular parallelepiped shape. The building units 2 include those made of steel and those made of wood. Among these, the steel frame building unit 2 has four ceiling beams 6b connected between the upper ends of four columns 6a in a rectangular shape in plan view, and the lower ends of the four columns 6a. It has a unit frame with a box rigid frame structure formed by connecting four floor beams 6c in a rectangular shape in plan view between the sections.

As shown in FIG. 3, the entrance/exit portion 3 of the opening unit 4 is installed in the opening unit 4 as a window having a window frame 3a and a window sash 3b. The window frame 3a is installed directly or indirectly on the floor beam 6c of the unit frame. In this embodiment, the window frame 3a is installed almost directly on the floor beam 6c of the unit frame, so that the entrance/exit portion 3 is made as low as possible. The floor plate 4a of the opening unit 4 is installed on a floor beam 4b constructed over the floor beam 6c of the unit frame. The floor height of the opening unit 4 (the height of the upper surface of the floor plate 4a) is located above the floor beam 6c. In this embodiment, the floor plate 4a of the opening unit 4 is installed almost in line with the lower sill part 3c of the window frame 3a, and is continuous with almost no difference in level from the lower sill part 3c of the window frame 3a. It is in a flat state.

The lower part of the window frame 3a (the lower surface of the sill part 3c) is attached to the lower part of the outer surface of the building unit 2 via the attachment part 7. As shown in FIG. 4(a), the lower outer portion of the window frame 3a has, for example, a partial protrusion that is laterally engaged with the floor beam 6c of the opening unit 4. 3d is integrally provided facing downward, and the attachment portion 7 is attached to the lower surface of the protrusion 3d. In addition, the attachment part 7 may be comprised integrally with the protrusion part 3d of the window frame 3a, and may be comprised separately.

When the mounting portion 7 is configured separately from the protruding portion 3d of the window frame 3a, the mounting portion 7 is, for example, a metal fitting that is approximately L-shaped when viewed from the side, and is attached to the lower surface of the protruding portion 3d of the window frame 3a. It is mounted from the bottom upward using a fixing tool such as a screw 8, with the side surface portion having a substantially L-shape in view being placed in contact with each other from below. Then, a fixing device such as a screw 9 is placed with the vertical part of the mounting part 7, which is approximately L-shaped in side view, in contact with the side part (web part) of the floor beam 6c of the building unit 2 from the outside. It is laterally attached to the outer surface of the aperture unit 4 from the outside.

In the direction perpendicular to the plane of paper (depth direction), the mounting portion 7 may have the same length as the protrusion 3d and extend continuously in the depth direction, or may have a length longer than the protrusion 3d. They may be short in the depth direction and may be installed continuously or discontinuously in the depth direction. Note that the lateral direction refers to a substantially horizontal direction, but in this embodiment, it mainly refers to the left-right direction of the paper (the direction from the balcony unit 5 side to the opening unit 4 side, or the direction from the opening unit 4 side to the balcony unit It often refers to the direction toward the 5th side).

By arranging the opening unit 4 and the balcony unit 5 in parallel, a balcony installation structure is formed in the unit building 1, and entry and exit between the opening unit 4 and the balcony unit 5 is possible through the entrance/exit portion 3.

In contrast to the basic configuration described above, this embodiment can include the following configuration.

(1) In the balcony installation structure described above, as shown in FIGS. 4(a) and (b),
A draining sheet 21 is hung down from the balcony unit 5 side of the opening unit 4.
Further, a rising portion 23 is provided at the edge of the floor plate 22 of the balcony unit 5 on the opening unit 4 side.
A horizontally curved portion 24 is formed at the upper end of the rising portion 23.
The draining sheet 21 is bonded to the horizontally curved portion 24 with its lower end facing sideways (adhesive portion).

Here, the draining sheet 21 is a sheet material installed at least at the lower part of the outer surface of the opening unit 4 on the balcony unit 5 side, and is made of a relatively flexible waterproof material. Drain the water from the lower part of the sides. The draining sheet 21 is installed on the back side of the outer wall section 25 (FIG. 4(b)) attached to the outer surface of the opening unit 4, or on the back side or bottom of the entrance/exit section 3 (FIG. 4(a)) provided on the outer wall section 25. , it is installed vertically so as to substantially follow the outer surface of the aperture unit 4. The lower end of the draining sheet 21 is extended below the lower part of the outer wall part 25 and the lower part of the entrance/exit part 3. Such a draining sheet 21 extends substantially continuously along the outer surface of the opening unit 4 in the depth direction of the drawing (direction perpendicular to the plane of the paper).

The floor plate 22 of the balcony unit 5 is a substantially horizontal surface material that constitutes the floor portion 5a of the balcony unit 5. The floor plate 22 is substantially rectangular in plan view, and is formed into a rectangular shape having substantially the same size and shape as the planar shape of the opening unit 4, for example. The floorboard 22 has a multilayer structure in which, for example, a subfloor material 22a, a metal subfloor steel plate 22b, and a floor finishing material 22c (FIG. 3) are laminated in order from the bottom. The floorboard 22 is installed on a floor frame portion (floor frame) that constitutes the floor portion 5a of the balcony unit 5. The floor frame portion of the balcony unit 5 is composed of floor beams, floor beams 26 (FIG. 3), and the like.

Note that the floor height of the balcony unit 5 is the position of the upper surface of the floor finishing material 22c installed at the top. The upper surface of the floor finishing material 22c is located at a lower position than the upper surface of the floor beam 6c of the unit frame. The difference in height between the floor height of the balcony unit 5 and the floor height of the opening unit 4 becomes a straddle step.

The edge of the floorboard 22 on the side of the opening unit 4 is the side located on the side of the opening unit 4 among the four sides surrounding the entire circumference of the floorboard 22, which is substantially rectangular in plan view. The edge of the floor plate 22 on the side of the opening unit 4 is horizontally long enough to slightly not reach the side surface of the floor beam 6c of the unit frame so that it is hidden by the protrusion 3d of the window frame 3a and the lower part of the outer wall 25. extended in the direction.

The rising portion 23 is an upwardly bent portion formed integrally with the edge of the floorboard 22. In this embodiment, the rising portion 23 is provided at the edge of the subfloor steel plate 22b that constitutes the floorboard 22. The rising portion 23 extends substantially directly upward so as to substantially follow the outer surface of (the floor beam 6c of) the opening unit 4.

The rising portion 23 is positioned below (almost directly below) the protruding portion 3d of the window frame 3a (FIG. 4(a)) or below (substantially directly below) the outer wall portion 25 (FIG. 4(b)). established in The rising portion 23 is provided continuously along the lower side of the entrance/exit portion 3 and the outer wall portion 25 in the depth direction. By providing the raised portion 23 at the edge of the floor plate 22 (the subfloor steel plate 22b constituting the floor plate 22), the floor plate 22 (the subfloor steel plate 22b constituting the subfloor plate 22b) becomes a waterproof pan, and the subfloor steel plate 22b as a whole is able to prevent rainwater. At the same time, the rising portion 23 can prevent water from leaking (overflowing) from the edge. A drainage slope can be provided on the subfloor steel plate 22b, if necessary.

The upper end of the raised portion 23 refers to the upper edge of the raised portion 23. The upper end portion of the rising portion 23 is provided at a height that does not reach the protruding portion 3d of the window frame 3a or the lower surface of the outer wall portion 25. It is preferable that the rising portion 23 be provided at the minimum height necessary to prevent water leakage (water overflow) from the edge.

The horizontally bent portion 24 is a horizontally bent portion that is integrally formed at the upper end of the rising portion 23 . The horizontally curved portion 24 extends laterally, for example, substantially horizontally in a direction away from the opening unit 4 (towards the inside of the balcony unit 5). Note that, if necessary, a drainage slope may be formed in the horizontally curved portion 24 so that the drainage slope slopes downward in the direction away from the opening unit 4.

The horizontally curved portion 24 has at least a width that allows the lower end of the draining sheet 21 to be reliably attached (a length that allows the necessary attachment width to be secured). For example, the horizontally curved portion 24 can be formed to have a width that is approximately the same as or slightly wider than the installation width required for attaching the lower end of the draining sheet 21.

In this embodiment, the horizontally curved portion 24 is formed in the horizontal direction with a length that almost reaches or slightly exceeds the surface of the window frame 3a and the outer wall portion 25. In this embodiment, the horizontally curved portion 24 is formed to have a lateral length (or width) that is approximately the same as the height of the raised portion 23 . Furthermore, a required gap is formed between the horizontally curved portion 24 and the lower surface of (the protruding portion 3d of) the entrance/exit portion 3 and the lower surface of the outer wall portion 25. The lower end of the draining sheet 21 is guided to the balcony unit 5 side through this gap and abuts on the horizontally curved portion 24. This gap has, for example, approximately the same height (or size) as the height of the rising portion 23 in the vertical direction. However, the width dimension of the horizontally curved portion 24, the height dimension of the rising portion 23, and the height dimension of the gap are not limited to the above.

The lower end portion of the draining sheet 21 is a portion (downward extending portion) of the draining sheet 21 that extends below the lower surface of the entrance/exit portion 3 (the protruding portion 3d) and the lower surface of the outer wall portion 25, and is It has the function of draining rainwater that flows down along the outer surface of the 4. The lower end portion of the draining sheet 21 is formed longer than the length reaching the horizontally curved portion 24. The lower end portion of the draining sheet 21 is bent (curved) sideways using its flexibility, so that at least a portion of the tip side comes into contact with the horizontally curved portion 24 . Thereby, rainwater that has passed through the outer wall portion 25 of the opening unit 4 can be guided onto the subfloor steel plate 22b along (the outer surface of) the draining sheet 21. At this time, the lower end of the draining sheet 21 has at least the necessary installation width so that the part (especially around the lower edge) which is oriented laterally on the tip side than the curved part is attached to the horizontally curved part 24. Make sure there is face-to-face contact.

In addition, at the lower part of the outer surface of the opening unit 4, on the inner side of the draining sheet 21 (of the opening unit 4), there is a draining fitting 27 (see FIG. )), draining hardware 28 (FIG. 4(b)), etc. may be provided. The drainer 27 and the drainer 28 have a vertical portion and substantially horizontal horizontally curved portions 27a and 28a provided at the lower end of the vertical portion, and support the drainer sheet 21 from the back side. The substantially horizontal horizontally curved portions 27a and 28a of the drainer fitting 27 and the drainer hardware 28 extend horizontally toward the horizontally curved portion 24 at approximately the same height as the horizontally curved portion 24 or at a slightly higher position than the horizontally curved portion 24. It is extended to a length that slightly does not reach the curved portion 24 and is substantially continuous with the horizontal curved portion 24. Note that, if necessary, a drainage slope may be formed in the horizontally curved portions 27a and 28a, which slopes downward in the direction away from the opening unit 4.

In this embodiment, the draining fitting 27 is used so as to overlap the attachment part 7 at the lower part of (the protruding part 3d of) the entrance/exit part 3 (FIG. 4a). That is, the vertical surface portion of the draining fitting 27 is placed in contact with the vertical surface portion of the mounting portion 7 from the outside, and is fastened together from the outside to the outer surface of the opening unit 4 using a fixing device such as a screw 9. Can be mounted laterally. At this time, the draining sheet 21 may be pulled out from the back side of the attachment part 7, or its upper end portion may be inserted between the vertical surface of the draining fitting 27 and the vertical surface of the attachment part 7. It may be clamped and fixed. Similar to the attachment part 7, the draining fitting 27 may extend continuously with the same length as the protruding part 3d in the direction perpendicular to the paper surface (depth direction), or may have a length shorter than the protruding part 3d. They may be installed continuously or discontinuously. Note that the draining fitting 27 may be formed integrally with the mounting portion 7.

On the other hand, the draining hardware 28 is used in a portion of the outer wall portion 25 other than the entrance/exit portion 3 (FIG. 4b). The vertical surface portion of the draining hardware 28 is extended upward to a length such that it can be inserted into the back side of the outer wall portion 25. The draining hardware 28 may extend continuously or discontinuously in the direction perpendicular to the page (depth direction).

Adhesion is to attach and integrate the lower end of the draining sheet 21 and the horizontally curved portion 24. Thereby, the lower end portion of the draining sheet 21 can be installed so as to be kept in a stable state. Adhesive or adhesive is used to bond the lower end of the draining sheet 21. The adhesive or pressure-sensitive adhesive may be applied directly to the portion of the lower end of the drainage sheet 21 to be adhered to the horizontally curved portion 24 or to the horizontally curved portion 24 at the construction site. It is preferable to form an adhesive layer 29 (FIG. 6(a)) in advance on the lower end (the part to be adhered to the horizontally curved part 24) with a width equal to or larger than the required mounting width. Thereby, by simply peeling off the release paper attached to the adhesive layer 29, the lower end portion of the draining sheet 21 can be easily adhered to the horizontally curved portion 24 at any time. The area where the adhesive or pressure-sensitive adhesive is applied and the area where the adhesive layer 29 is formed become the above-mentioned adhesive area.

The lower end portion of the draining sheet 21 is adhered to the horizontally curved portion 24 with at least the periphery of the lower edge thereof being superimposed on the upper surface of the horizontally curved portion 24 .

Note that the lower end of the draining sheet 21 and the horizontally curved portion 24 may be fixed only by adhesive, but it is preferable to do so as described below.

(2) In the above, the lower end portion of the draining sheet 21 and the horizontally curved portion 24 may be secured from the side by the clip 31.

Here, the clip 31 is an elastically deformable fixing component that clamps or presses and fixes the abutting part (overlapping part or adhesive part) of the lower end of the draining sheet 21 and the horizontally bent part 24. It is. The clip 31 is attached to the contact portion between the lower end of the draining sheet 21 and the horizontally curved portion 24 in a lateral direction from the balcony unit 5 side toward the opening unit 4 side.

It is preferable that the clip 31 be attached so as to be continuous along the lower end of the draining sheet 21 in a direction perpendicular to the page (depth direction). However, the clip 31 may be attached in a discontinuous manner in a direction perpendicular to the paper surface. The clip 31 may be a long component that extends to a required length along the lower end of the draining sheet 21, or may be a short component that is shorter than that. One or more clips 31 can be used along the lower end of the draining sheet 21. At this time, the clip 31 can be made of only long parts, only short parts, or a combination of long parts and short parts as appropriate.

As shown in FIG. 5, the clip 31 is a metal fitting that is substantially horizontally U-shaped when viewed from the side. The horizontally U-shaped clip 31 has an upper clamping piece 31a, a lower clamping piece 31b, and a connecting part 31c. The two end portions (or base end portions) located on the side thereof are connected by a connecting portion 31c.

The upper clamping piece 31a and the lower clamping piece 31b are a pair of upper and lower horizontal surfaces that vertically clamp the contact portion between the lower end of the draining sheet 21 and the horizontally curved part 24. When viewed from the side, the upper clamping piece 31a and the lower clamping piece 31b have a width in the lateral direction that allows them to clamp the lower end of the draining sheet 21 and the horizontally curved part 24 while enclosing almost the entire area of the contact area. It is preferable to have a length (width). In this embodiment, the upper clamping piece 31a and the lower clamping piece 31b have a width dimension that is approximately the same length (width) in the lateral direction of the horizontally curved portion 24, or slightly longer than that. It is formed.

The upper clamping piece 31a may have an inclined shape that slopes downward from the connecting portion 31c side (base end side) toward the distal end side (opening unit 4 side) when viewed from the side. Furthermore, the lower clamping piece 31b may have a substantially horizontal linear shape. As a result, the clip 31 as a whole has a tapered shape. The tip of the tapered clip 31 is formed in a completely closed state or in a closed state so as to be narrower than the thickness of the abutting portion between the lower end of the draining sheet 21 and the horizontally curved portion 24. .

Further, the clip 31 may have the upper clamping piece 31a slightly longer than the lower clamping piece 31b so that the contact portion between the lower end of the draining sheet 21 and the horizontally curved part 24 can be easily clamped. At the tip of the upper clamping piece 31a, a part protruding slightly longer than the lower clamping piece 31b, and around it, there is an introduction taper part that is bent diagonally upward toward the tip and widens at the end. 31d may also be formed.

The clip 31 may include teeth 31e (FIG. 5) for preventing the clip 31 from coming off, which are designed to bite the lower end of the draining sheet 21 or the horizontally curved portion 24, on the upper surface of the lower clamping piece 31b, etc., as necessary. may be formed. One or more tooth portions 31e can be formed on the lower clamping piece 31b by cutting and bending, for example.

The connecting portion 31c is a vertical surface that acts as a center of elastic deformation and applies a clamping force to the clip 31 when the upper clamping piece 31a and the lower clamping piece 31b open and close due to elastic deformation. The connecting portion 31c integrally connects the ends (base ends) of the upper clamping piece 31a and the lower clamping piece 31b on the balcony unit 5 side, each having an upper and lower bent portion. The connecting portion 31c is formed to have a height (vertical dimension) that is approximately the same height as the thickness of the overlapping portion of the lower end of the draining sheet 21 and the horizontally curved portion 24, or slightly larger than that.

The horizontal U-shaped clip 31 can be made, for example, by bending an elastically deformable metal material. The bending angle of the upper bending part between the connecting part 31c and the upper clamping piece 31a is formed to be slightly smaller than 90 degrees, and the bending angle of the lower bending part between the connecting part 31c and the lower clamping piece 31b The bending angle of the bent portion is approximately 90 degrees or slightly greater.

(3) As another embodiment described above, the lower end of the draining sheet 21 may be laterally fastened by the clip 31 in a state where it is stacked on the horizontally curved portion 24 laterally.

Here, the lower end portion of the draining sheet 21 and the horizontally curved portion 24 may be sandwiched (crimped and fixed) only by the clip 31. In this case as well, it is preferable that the clip 31 be formed so that the portion that clamps the lower end of the draining sheet 21 and the horizontally curved portion 24 has approximately the same width as the horizontal length of the horizontally curved portion 24. . The clip 31 is the same as described in column (2) above. However, as described above, it is preferable to fix the lower end of the draining sheet 21 and the horizontally curved part 24 together with adhesive fixing, rather than sandwiching them only with the clips 31.

(4) In each of the above cases, the lower end portion of the draining sheet 21 may be folded back and overlapped on both the upper and lower surfaces of the horizontally curved portion 24.

Here, the lower end of the draining sheet 21 may be brought into contact with only the upper surface of the horizontally curved portion 24, for example, but it may be brought into contact with both the upper and lower surfaces of the horizontally curved portion 24. .

In this case, the lower end portion (around the lower edge) of the draining sheet 21 is folded back approximately 180 degrees downward (folded portion) at approximately the middle of the portion that corresponds to the installation width for the horizontally curved portion 24. Approximately half of the upper side is in contact with the upper surface of the horizontally curved portion 24 (upper surface abutting portion), and approximately half of the lower side of the mounting width is in contact with the lower surface of the horizontally curved portion 24 (lower surface abutting portion). It is preferable to install At this time, the contact width of the lower end portion of the draining sheet 21 with respect to both the upper and lower surfaces of the horizontally curved portion 24 may be made equal in the upper and lower portions, or may be made uneven in the upper and lower portions.

The lower end (around the lower edge) of the draining sheet 21 may be glued to the horizontally curved portion 24, vertically clamped (crimped and fixed) to the horizontally curved portion 24 with clips 31, or fixed by adhesive and clips 31. Pinching and clamping may be performed at the same time.

When adhering, it is preferable to adhere the lower end of the draining sheet 21 to both the upper and lower surfaces of the horizontally curved portion 24, but if the necessary installation width can be secured, It is also possible to adhere only to one side.

When using the clip 31, the clip 31 can simultaneously sandwich three layers: the horizontally curved portion 24 and the lower end of the draining sheet 21 that is folded back so as to contact both upper and lower surfaces of the horizontally curved portion 24. Become.

In this way, by using both the upper and lower surfaces of the horizontally curved portion 24, the horizontally curved portion 24 can have a width ranging from approximately the same as or slightly longer than the required mounting width to approximately half the required mounting width. Width dimensions can be set as appropriate within the range. For example, by folding back the lower end of the draining sheet 21 and bringing it into almost equal contact with both the upper and lower surfaces of the horizontally curved section 24, the width of the horizontally curved section 24 can be shortened to approximately half the required installation width. It becomes possible to do so.

(5) The clip 31 may be provided with a decorative portion 35 (FIG. 5) at least on the connecting portion 31c or its periphery.

Here, the decorative portion 35 can be, for example, subjected to surface treatment such as plating, surface treatment such as matte treatment, coloring, pattern, etc. The decoration portion 35 described above is applied to at least the surface (outer surface) of the clip 31. The above-mentioned decorative portion 35 can be applied to the entire front surface or the back surface of the clip 31 as necessary. The decoration portion 35 can be formed before the metal material constituting the clip 31 is bent, or after the metal material is bent.

(Others) Furthermore, the clip 31 may be provided with a drainage hole or the like, if necessary. The drainage hole can be formed, for example, in the lower clamping piece 31b or the connecting part 31c as appropriate. For example, when forming a drainage hole in the lower clamping piece 31b, it is preferable to provide it near the connecting portion 31c, for example.

By forming the drainage hole in the clip 31 in this manner, rainwater accumulated in the clip 31 can be drained from the drainage hole onto the floorboard 22 (the subfloor steel plate 22b forming the same).

<Function> The function of this embodiment will be explained below.

Manufacture building unit 2 at the factory. The building unit 2 includes an opening unit 4 having an entrance/exit portion 3 on the side. Moreover, the balcony unit 5 is manufactured at the factory. Then, the manufactured opening unit 4 and balcony unit 5 are transported to the construction site.

At a construction site, a balcony unit 5 is installed, and as shown in FIG. 6(a), the opening units 4 are arranged next to the balcony unit 5 so that the entrance/exit part 3 faces the balcony unit 5 side. The balcony unit 5 and the opening unit 4 are installed by lifting them with a crane. In this embodiment, the balcony unit 5 and the opening unit 4 are installed above the building unit 2 on the lower floor to form an upper floor portion.

When installing the opening unit 4, lift up the lower end of the draining sheet 21, which is vertically attached to the lower part of the outer surface of the opening unit 4, and bend it sideways or upwards. 4, as shown in FIG. 6(b), place the lower end of the draining sheet 21 on the raised part 23 and horizontally curved part 24 of the edge of the floorboard 22 of the balcony unit 5 on the opening unit 4 side. .

Then, if necessary, the lower end of the draining sheet 21 is placed over the horizontally curved portion 24 and adhered to the horizontally curved portion 24 in a horizontal direction. At this time, the draining sheet 21 may be bonded so that its lower end overlaps only the upper surface of the horizontally curved portion 24, or may be folded back and bonded so that its lower end overlaps both the upper and lower surfaces of the horizontally curved portion 24. good.

If necessary, as shown in FIG. 6(c), a clip 31 is attached from the side to the lower end of the draining sheet 21 and the horizontally curved portion 24, and 24 from the side with a clip 31. As a result, the lower end portion of the draining sheet 21 and the horizontally curved portion 24 are vertically clamped (crimped and fixed) by the clip 31.

Note that at least one of adhesion and fixation using the clip 31 may be performed, but it is most preferable to perform both.

Through the above steps, the balcony installation structure in the unit building 1 is completed. The resident can then go in and out between the opening unit 4 and the balcony unit 5 through the entrance/exit section 3. Further, rainwater that has fallen on the outer surface of the opening unit 4 can be guided onto the main body of the subfloor steel plate 22b of the balcony unit 5 via the drainage sheet 21.

<Effects> According to this embodiment, the following effects can be obtained.

(Effect 1) For example, in the case of the comparative example shown in FIG. They are stacked and bonded from the outside in a vertically oriented state to a vertically oriented raised portion 23 provided on the edge (of the unit 4 side). Therefore, in order to secure a sufficient installation width for the lower end of the draining sheet 21, it is necessary to make the rising portion 23 higher than necessary (increase the height dimension or vertical dimension), and the flooring steel plate must be increased accordingly. 22b and the floor finishing material 22c are installed at a lower position, and the step difference between the floor plate 4a of the opening unit 4 and the floor plate 22 of the balcony unit 5 at the entrance/exit portion 3 becomes higher.

Therefore, in order to lower the straddle step of the entrance/exit part 3 with this structure, for example, as shown in FIG. As a result, it becomes necessary to adopt a so-called dry floating floor finishing method in which the floor finishing material 22c is raised to a higher position relative to the subfloor steel plate 22b. However, the dry floating floor finishing method is expensive, so it cannot be easily introduced. difficult. Further, as shown in FIG. 7, by lowering the height of the floor plate 4a of the opening unit 4 below the position of the lower sill part 3c of the window frame 3a, the floor plate 4a of the opening unit 4 and the floor plate 22 of the balcony unit 5 can be Although it is possible to make the straddle level difference between the opening units 4 and the window frame 3a appear lower, in this case, a different (straddle) level difference from the above is created between the floor plate 4a of the opening unit 4 and the sill portion 3c of the window frame 3a.

Therefore, in this embodiment, as shown in FIG. 4(a), a horizontally curved portion 24 is provided at the upper end of the rising portion 23 of the edge of the floor plate 22 (the subfloor steel plate 22b constituting it) on the side of the opening unit 4. The lower end (around the lower edge) of the draining sheet 21 hanging down from the opening unit 4 is brought into contact with the horizontally curved portion 24 in a sideways state, and the abutted portion is brought into contact with the horizontally curved portion 24. I am trying to glue it to 24. In this way, by adhering the lower end of the draining sheet 21 horizontally to the horizontally curved portion 24, a sufficient mounting width can be secured at the horizontally curved portion 24, so that the edge It becomes possible to keep the rising portion 23 low (reducing the height dimension to the necessary minimum).

As the rising portion 23 can be lowered, the upper surfaces of the subfloor steel plate 22b and the floor finishing material 22c constituting the floorboard 22 can be set higher. It becomes possible to lower the step difference between the floor plate 22 of the balcony unit 5 and the floor plate 4a of the opening unit 4. Therefore, it is possible to eliminate the need to use the dry floating floor finishing method or the like on the floor plate 22 of the balcony unit 5 to lift the floor finishing material 22c with respect to the subfloor steel plate 22b using the height adjustment bundle member 41.

Therefore, even if the structure of the balcony unit 5 is not changed significantly and the floor finishing material 22c is installed directly on the subfloor steel plate 22b, which is an inexpensive and simple structure, the above-mentioned straddling step can be lowered. It becomes possible. Furthermore, as described above, by lowering the height of the floor plate 4a of the opening unit 4 below the position of the lower part of the window frame 3a (sill portion 3c), it is possible to make the above-mentioned straddling step appear lower. Therefore, the height of the floor plate 4a of the opening unit 4 is aligned with the position of the lower part (sill part 3c) of the window frame 3a (almost flat), and It is possible to prevent another step from occurring between the two.

At this time, as described above, by forming the horizontally curved portion 24 at the upper end of the rising portion 23 and bringing the lower end of the draining sheet 21 into contact with the horizontally curved portion 24 in a horizontal state, waterproof reliability can be improved. The mounting width of the lower end of the draining sheet 21 required to ensure the width can be secured at the horizontally curved portion 24 with a margin. Therefore, the problem of not being able to obtain a sufficient installation width for the lower end of the draining sheet 21 by lowering the rising portion 23 can be solved by simply providing the horizontally curved portion 24 at the upper end of the rising portion 23. This can be resolved by adding additional configuration.

Then, by gluing the lower end of the draining sheet 21 to the horizontally curved portion 24 in a horizontal position, the working posture during gluing becomes easier, making gluing work easier and reducing variations in work. As a result, the waterproof performance of the lower end of the draining sheet 21 can be more reliably ensured.

In addition, in the unit building 1, as described above, the opening units 4 and balcony units 5 manufactured in advance at a factory are transported to the construction site and assembled at the construction site. The dimensions of the members constituting the unit 5 cannot be adjusted. Therefore, it is considered undesirable to waterproof the space between the opening unit 4 and the balcony unit 5 using only a sealing material that depends on the dimensions of the components, such as a gasket, in order to ensure waterproof reliability. ing.

On the other hand, as in this embodiment, by adopting a structure in which the lower end of the draining sheet 21 is glued horizontally to the horizontally curved portion 24, the draining sheet 21 can be attached to the opening unit 4 and the balcony unit 5. In between, it is installed in the optimum state according to the situation at the construction site, and waterproofing is performed with the drainage sheet 21, so variations in the dimensions of the opening unit 4 and balcony unit 5 are absorbed by the drainage sheet 21, and the opening Waterproof reliability between the unit 4 and the balcony unit 5 is ensured. Therefore, it is possible to obtain a highly reliable waterproof structure that does not rely on gaskets.

(Effect 2) The horizontal contact portion between the lower end of the draining sheet 21 and the horizontally curved portion 24 may be laterally sandwiched by the clip 31. Thereby, the abutting portion (or adhesive portion) between the lower end of the draining sheet 21 and the horizontally curved portion 24 can be vertically crimped with the clip 31, thereby fixing and protecting the abutting portion. Therefore, the durability of the contact portion can be increased. In addition, since the clip 31 only clips the abutting portion between the lower end of the draining sheet 21 and the horizontally bent portion 24, it can be easily attached regardless of the operator, ensuring a stable construction state and sufficient crimp strength. can do.

The substantially horizontal abutting portion between the lower end of the draining sheet 21 and the horizontally curved portion 24 has a small vertical dimension and is hidden by the clip 31, which is hardly noticeable from the outside, so that it looks good without increasing cost. It can improve the appearance and is economical.

On the other hand, for example, as shown in the comparative example in FIG. Since the adhesive portion in the opposite direction is exposed to the outside in a wide range, it becomes necessary to separately attach the decorative material 51 from the outside in order to hide and protect the adhesive portion at the lower end of the draining sheet 21. The decorative material 51 is a member having a large dimension in the vertical direction and is a member that is noticeable from the outside, so it is costly and uneconomical. Therefore, by attaching the clip 31 sideways to make it inconspicuous as in this embodiment, it is possible to eliminate the conspicuous decorative material 51 and reduce costs.

(Effect 3) Furthermore, as another embodiment, the lower end of the draining sheet 21 may be held laterally with the clip 31 (only) in a state in which the lower end of the draining sheet 21 is turned sideways and overlapped with the horizontally curved portion 24. Thereby, the lower end portion of the draining sheet 21 and the horizontally curved portion 24 can be reliably crimped and fixed by the crimping force of the clip 31. Further, substantially the same effect as described above (effect 2) can be obtained.

(Effect 4) In each of the above cases, the lower end portion of the draining sheet 21 may be folded back and overlapped on both the upper and lower surfaces of the horizontally curved portion 24. As a result, it is possible to effectively use both the upper and lower sides of the horizontally curved portion 24 to secure the required installation width at the lower end of the draining sheet 21. It can be shortened to about half the length. In addition, the lower end of the draining sheet 21 can be overlapped with the upper and lower surfaces of the horizontally curved portion 24 in a folded state, and furthermore, by bonding the upper surface or the lower surface of the horizontally curved portion 24 or the upper and lower surfaces of the horizontally curved portion 24, the horizontally curved portion 24 can be Since both the upper and lower sides of the drain sheet 21 are wrapped with the lower end of the draining sheet 21, the work of attaching the clip 31 becomes easier.

(Effect 5) A decorative portion 35 may be formed on the clip 31 at least at the connecting portion 31c or its periphery. Since the clip 31 is a member that is not easily noticeable from the outside, it is thought that there will be no particular problem if it is left as is. Even if it is noticed from the outside, the cosmetic effect or decorative effect of the decorative portion 35 provides a good appearance, so that the quality of the appearance can be ensured and improved. The decorative portion 35 may be applied to the entire clip 31, or may be applied only to the connecting portion 31c or the surface (outer surface) around the connecting portion 31c, which is relatively easily visible from the outside, within the clip 31. Even if it is done in this way, it is effective because the clip 31 can be made to look good.

1 Unit building 3 Entrance/exit portion 4 Opening unit 5 Balcony unit 21 Draining sheet 22 Floor board 23 Standing portion 24 Horizontal bending portion 31 Clip 35 Decoration portion

Claims (4)

an opening unit having an entrance/exit portion and a balcony unit are arranged side by side with the entrance/exit portion facing toward the balcony unit;
A draining sheet is hung down from the balcony unit side of the opening unit,
A balcony installation structure in which a rising portion is provided at an edge of the floor plate of the balcony unit on the side of the opening unit,
A horizontally curved part is formed at the upper end of the rising part,
The balcony installation structure is characterized in that the draining sheet is bonded to overlap the horizontally curved portion with the lower end thereof facing sideways. The balcony installation structure according to claim 1,
A balcony installation structure characterized in that the lower end of the draining sheet and the horizontally curved portion are laterally fixed with a clip. an opening unit having an entrance/exit portion and a balcony unit are arranged side by side with the entrance/exit portion facing toward the balcony unit;
A draining sheet is hung down from the balcony unit side of the opening unit,
A balcony installation structure in which a rising portion is provided at an edge of the floor plate of the balcony unit on the side of the opening unit,
A horizontally curved part is formed at the upper end of the rising part,
The balcony installation structure is characterized in that a lower end of the draining sheet is laterally fixed by a clip while being overlapped with the horizontally curved portion. The balcony installation structure according to any one of claims 1 to 3,
The balcony installation structure is characterized in that the lower end of the draining sheet is folded back and overlapped on both upper and lower surfaces of the horizontally curved part.