Base frame and base unit

Abstract

To provide a base frame and a base unit capable of maintaining watertightness without forming holes in a waterproof layer. [Solution] The base frame is used to attach the shutter 1 to a building skeleton 2 whose exterior wall surface is made up of an exterior wall material 25 and a waterproof layer 26 and which has an opening 5 in which a sliding window 4 will be installed, and is made up of upper frame base materials 31, 34, a lower frame base material 32, and left and right vertical frame base materials 33 arranged vertically. The upper frame base materials 31, 34 and the left and right vertical frame base materials 33 are positioned so that they can abut and face the exterior wall material 25 on the outside of the room, and the lower frame base material 32 is positioned so that it can face the waterproof layer 26 on the outside of the room at a distance.

Description

[Technical field]

[0001] The present invention relates to a base frame and base unit for attaching building accessories such as shutters, louvers, and lattices to a building framework. [Background technology]

[0002] Conventionally, there is known an attachment structure in which a louver, which is a building accessory arranged on the outdoor side of a fitting such as a terrace window, is attached to the building frame of a detached house or the like (see Patent Document 1). The building frame includes a building wall, and an exterior wall material and a waterproof layer installed along the building wall, with the waterproof layer being located inside the room relative to the exterior wall material. The upper frame of the louver is fixed to the building wall with a screw that penetrates the exterior wall material, and the lower frame of the louver is fixed to the building wall with a screw that penetrates the waterproof layer. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-151154 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the mounting structure described in Patent Document 1, the screws that secure the lower frame of the louver to the building frame penetrate the waterproof layer, which creates holes in the waterproof layer that connect the outdoor space to the building wall, and there is a risk of water leakage from these holes. For this reason, it is necessary to apply a waterproofing treatment to these holes.

[0005] An object of the present invention is to provide a base frame and base unit that can maintain watertightness without forming holes in the waterproof layer. [Means for solving the problem]

[0006] The base frame of the present invention is a base frame for attaching building accessories to a building skeleton whose exterior wall surface is composed of an exterior wall material and a waterproof layer that is below the exterior wall material and has a projected position on the indoor side, and in which an opening is formed for installing a fixture, and is composed of an upper frame base material, a lower frame base material, and left and right vertical frame base materials that are vertically framed, and the upper frame base material and the left and right vertical frame base materials are positioned so that they can abut and face the exterior wall material on the outdoor side, and the lower frame base material is, Not attached to the waterproof layer, It is characterized in that it is arranged in a position that can face the waterproof layer on the outdoor side with a gap between them. The base unit of the present invention is a gap between the vertical frame base material and the door or the waterproof layer. to be placed in The present invention is characterized in that it is composed of a gap-hiding member and the gap-hiding member is attached to the lower part of the vertical frame base material. Effect of the Invention

[0007] According to the present invention, it is possible to provide a base frame and a base unit that can maintain water-stopping properties without forming holes in the waterproof layer. [Brief description of the drawings]

[0008] [Figure 1] 1 is an external view showing a louver attached to a building frame using a mounting structure according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a vertical cross-sectional view showing the mounting structure according to the embodiment. [Diagram 3] FIG. 4 is a vertical cross-sectional view showing a lower portion of the mounting structure according to the embodiment. [Figure 4] FIG. 2 is a cross-sectional view taken along line IV-IV shown in FIG. [Diagram 5] 2 is a cross-sectional view taken along line VV shown in FIG. 1. [Figure 6] FIG. 4 is a perspective view showing a corner of the mounting structure according to the embodiment. [Figure 7] 4A to 4C are explanatory views relating to assembly of the mounting structure according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Configuration of this embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In Figs. 1 to 5, a shutter 1 as a building accessory is an exterior fitting arranged on the outdoor side of a sliding window 4 (terrace window), which is also a fitting, on a balcony 3 of a building frame 2 of a detached house or the like. In the following description, the left-right direction of the shutter 1 is defined as the X-axis direction, the up-down direction of the shutter 1 is defined as the Y-axis direction, and the projection direction of the shutter 1 is defined as the Z-axis direction. The X, Y, and Z axis directions are mutually perpendicular.

[0010] The building framework 2 has a building wall portion that forms an opening 5 with an upper wall portion 21, a lower wall portion 22, and left and right side wall portions 23. An exterior wall material 25 (siding) is provided on the outdoor side of the upper wall portion 21 and the left and right side wall portions 23 via a base plate 24 that runs along the building wall portion. An FRP waterproof layer 26 is provided on the outdoor side of the lower wall portion 22 and the lower parts of the left and right side wall portions 23 via the base plate 24. The FRP waterproof layer 26 is formed by impregnating glass fiber (reinforcing material) with resin and hardening it, and is provided to continuously cover the lower wall portion 22 and the floor base of the balcony 3, and is exposed to the outdoor side. The exterior wall material 25 is installed above the FRP waterproof layer 26. The exterior surfaces of the base boards 24 attached to the upper wall portion 21, the lower wall portion 22, and the left and right side wall portions 23 are flush with each other. The FRP waterproof layer 26 (waterproof layer, sheet) attached to the base boards 24 has a thickness dimension smaller than that of the exterior wall material 25, so that the exterior surface 261 of the FRP waterproof layer 26 (the exterior wall surface of the lower wall portion 22) is positioned at a predicted position that is stepped down toward the interior of the room than the exterior surface 251 of the exterior wall material 25 (the exterior wall surfaces of the upper wall portion 21 and the left and right side wall portions 23).

[0011] The sliding window 4 is constructed in a generally known manner and is provided in the opening 5 . The shutter 1 comprises a frame body 10 and a shutter device 15 attached to the frame body 10. As shown in Figures 1 and 2, the frame body 10 comprises an upper frame 11, a lower frame 12, and left and right vertical frames 13 formed from an aluminum extrusion material, and a shutter curtain 16 (described later) is fitted into the left and right vertical frames 13 so as to be movable up and down in the Y-axis direction. As shown in Figure 2, the shutter device 15 comprises a shutter curtain 16 formed by connecting a plurality of slats 161 rotatably to each other, a shutter winding shaft 17 capable of winding up and unwinding the shutter curtain 16, a motor (not shown) that drives the shutter winding shaft 17, and a shutter case 18 that houses the shutter winding shaft 17 and the motor and is attached to the left and right vertical frames 13.

[0012] As shown in Fig. 2, the upper frame base material 34 is attached to the shutter case 18 along the X-axis direction. The upper frame base material 34 is formed of a hollow aluminum extrusion material having indoor and outdoor visible surfaces 341, 342, upper and lower visible surfaces 343, 344, and a continuous piece 345 that is continuous with the visible surfaces 341, 342 between the visible surfaces 343, 344. above Side visible surface 34 3 A step 347 is formed in the upper frame base material 34 at the connecting portion, which is recessed inward. The upper frame base material 34 has an exterior facing surface 341 screwed to the shutter case 18 with screws 6, and an interior facing surface 342 disposed facing the exterior side of the exterior wall material 25 and screwed to the upper wall portion 21 via the exterior wall material 25 and base board 24 with fixing screws 7. A sealant 348 is provided between the step 347 and the exterior wall material 25.

[0013] As shown in Fig. 2, the upper frame base material 31 is attached to the upper frame 11 along the X-axis direction. The upper frame base material 31 is formed of a hollow aluminum extrusion having indoor and outdoor facing surfaces 311, 312 and upper and lower facing surfaces 313, 314. The outdoor facing surface 311 is formed with a bent portion 315 that is bent toward the indoor side, so that the upper portion of the bent portion 315 is positioned closer to the indoor side than the lower portion. The outdoor facing surface 311 of this upper frame base material 31 is positioned facing the outdoor side of the exterior wall material 25 and is screwed to the upper frame 11 with screws 6, and the indoor facing surface 312 is screwed to the upper wall portion 21 via the exterior wall material 25 and base board 24 with fixing screws 7.

[0014] As shown in FIG. 3, the lower frame base material 32 is attached to the lower frame 12 along the X-axis direction. The lower frame base material 32 is formed of a hollow aluminum extrusion having indoor and outdoor visible surfaces 321, 322, upper and lower visible surfaces 323, 324, and a continuous piece 325 that is continuous with the visible surfaces 321, 322 between the visible surfaces 323, 324. The outdoor visible surface 321 is formed with a protruding piece 326 that is disposed in a recessed groove that is engaged with the lower part of the indoor side of the lower frame 12. The protruding piece 326 protrudes from the visible surface 321 to the outdoor side and is raised obliquely upward. A step 327 that is recessed on the inside of the lower frame base material 32 is formed at the continuous portion of the indoor visible surface 322 and the lower visible surface 324. This lower frame base material 32 is in contact with the FRP waterproof layer 26 below the lower frame 12. Not attached and They are arranged facing each other with a gap between them on the outside of the room, and the exterior facing surface 321 is screwed to the lower frame 12 with screws 6. On the other hand, a gap hiding member 35 made of an aluminum extrusion is screwed to the interior facing surface 322 with screws 8. The gap concealing member 35 is arranged to extend in the X-axis direction along the lower frame base material 32, and is formed in an L-shaped cross section with an attachment piece portion 351 along the Y-axis direction and a gap concealing piece portion 352 along the Z-axis direction as shown in FIG. 3. The exterior surface of the attachment piece portion 351 abuts against the interior surface of the visible surface portion 322. On the interior surface of the attachment piece portion 351, a plurality of grooves 353 are formed vertically along the longitudinal direction of the gap concealing member 35. The plurality of grooves 353 can be used as marks for positioning the screw when the attachment piece portion 351 is screwed to the lower frame base material 32. The gap concealing piece portion 352 is arranged in a direction extending from the attachment piece portion 351 to the interior side when the attachment piece portion 351 is screwed to the lower frame base material 32, and faces the window lower frame 42 of the sliding window 4 in the Y-axis direction. The gap concealing piece 352 is provided with an elastic abutment 354 such as a sponge or a gasket along the longitudinal direction of the gap concealing piece 352. The elastic abutment 354 is in pressure contact with the window lower frame 42, thereby forming a gap concealing One side 35 2 It also seals the gap between the window sills 42 to prevent light leakage.

[0015] As shown in FIG. 4, the left and right vertical frames 13 are attached with the left and right vertical frame base members 33 along the Y-axis direction. The left and right vertical frame base members 33 are formed of hollow aluminum extrusions having indoor and outdoor facing surfaces 331, 332 and inner and outer peripheral facing surfaces 333, 334. At the continuous portion between the indoor facing surface 332 and the outer peripheral facing surface 334, a recessed step 337 is formed on the inside of the vertical frame base member 33. The left and right vertical frame base members 33 are arranged on the left and right outer peripheral side of the left and right vertical frames 13, and the outdoor facing surface 331 (excluding the lower part of the vertical frame base member 33, which will be described later) is arranged facing the outdoor side of the exterior wall material 25 and is screwed to the left and right vertical frames 13 with the screws 6, and the indoor facing surface 332 is screwed to the left and right side wall portions 23 via the exterior wall material 25 and the base board 24 with the fixing screws 7. A seal material 338 is provided between the step portion 337 and the exterior wall material 25 . As shown in FIG. 5, the left and right vertical frame base materials 33 are Not attached and Gap along Z axis (interval)At the opposing lower part across the gap, the visible surface part 332 on the indoor side is not screwed to the side wall part 23, but a gap concealing member 35 is attached. The gap concealing member 35 is configured in the same way as that attached to the sill 12, and is arranged in the Y-axis direction along the aforementioned lower part of the vertical frame base material 33, with the mounting piece part 351 screwed to the visible surface part 332 by the screw 8, and the gap concealing piece part 352 is arranged in a direction extending from the mounting piece part 351 to the indoor side and faces the vertical window frame 43 of the sliding window 4 in the X-axis direction. An elastic abutment body 354 provided on the gap concealing piece part 352 is in pressure contact with the vertical window frame 43, thereby forming a gap concealing member. One side 35 2 It also seals the gaps between the window vertical frames 43 to prevent light leakage.

[0016] The upper frame base material 31, 34 and the lower frame base material 32 along the X-axis direction have screw holes 36 formed therein, and the upper frame base material 31, 34, the lower frame base material 32, and the lower frame base material 33 are screwed vertically to the left and right vertical frame base materials 33. In this embodiment, the upper frame base material 31, 34, the lower frame base material 32, and the left and right vertical frame base materials 33 form a base frame. In addition, the gap concealing member 35 is attached to the lower frame base material 32 to form a base unit 37 shown in FIG. 7(A), and the gap concealing member 35 is attached to the vertical frame base material 33 to form a base unit 38 shown in FIG. 7(B). At the corners where the lower frame base material 32 and the vertical frame base material 33 are connected, as shown in FIG. 6, the elastic abutment body 354 installed on the lower frame base material 32 is pressed against the elastic abutment body 354 installed on the vertical frame base material 33, thereby suppressing light leakage around the corners.

[0017] The assembly of the mounting structure for the shutter 1 will now be described. First, the upper frame base materials 31, 34, the lower frame base material 32 and the left and right vertical frame base materials 33 are arranged vertically to form the base frame. Next, the gap concealing members 35 are attached to the bottom frame base material 32. Thereafter, the gap concealing members 35 are attached to the lower parts of the left and right vertical frame base materials 33. At this time, the elastic abutment 354 of the gap concealing members 35 on the vertical frame base material 33 side is pressed against the elastic abutment 354 of the gap concealing members 35 on the bottom frame base material 32 side. As a result, the elastic abutment bodies 354 of the gap concealing members 35 of the bottom frame base material 32 and the vertical frame base material 33 are pressed against each other, and are in close contact with each other to the extent that no light leakage occurs. Next, this base frame is fixed to the building skeleton 2. Specifically, temporary screws are driven into the building skeleton 2, and the base frame is hooked onto the temporary screws to temporarily position it. At this time, the elastic abutment body 354 of the gap concealing member 35 attached to the bottom frame base material 32 is pressed against the window bottom frame 42 of the sliding window 4, and the elastic abutment body 354 of the gap concealing member 35 attached to the left and right vertical frame base materials 33 is pressed against the window vertical frame 43 of the sliding window 4. This closes the gap between the sliding window 4 and the bottom frame base material 32 and the lower part of the vertical frame base material 33. After the temporary positioning, the upper frame base materials 31, 34 and the vertical frame base material 33 (excluding the lower part) are kept in contact with the exterior wall material 25, and the fixing screw 7 penetrates the exterior wall material 25 and the base board 24 and is screwed (permanently fixed) to the building wall part. Finally, the shutter 1 is attached. Specifically, the shutter case 18 is screwed to the upper frame base material 34 with the screws 6, the upper frame 11 is screwed to the upper frame base material 31 with the screws 6, the lower frame 12 is screwed to the lower frame base material 32 with the screws 6, and the left and right vertical frames 13 are screwed to the left and right vertical frame base materials 33 with the screws 6. In this manner, the mounting structure of the shutter 1 to the building frame 2 in which the sliding window 4 is installed is formed.

[0018] [Variations] In the above embodiment, the gap concealing member 35 is formed with an L-shaped cross section, but it may also have various other shapes, such as a T-shaped cross section, a Z-shaped cross section, an I-shaped cross section, a U-shaped cross section, or a square cross section. In the above embodiment, the gap concealing member 35 is attached to both the lower part of the lower frame base material 32 and the lower part of the vertical frame base material 33, but if there is no need to suppress light leakage between the shutter 1 and the sliding window 4 or the level of suppression is low, it may be attached to only one of the above, or not to both. In the above embodiment, the elastic abutments 354 of the gap concealing members 35 attached to both the lower frame base material 32 and the lower part of the vertical frame base material 33 are pressed against each other to suppress light leakage between them, but if there is no need to suppress this light leakage or the level of suppression is low, the elastic abutments 354 may be positioned at a distance from each other. In the above embodiment, the upper frame base materials 31, 34 and the left and right vertical frame base materials 33 (excluding the lower parts) are fixed to the building structure 2 in an abutting state along the exterior wall material 25, but a spacer or the like may be interposed between them and the exterior wall material 25. In the above embodiment, there are two upper frame base materials 31, 34, but there may be only one if the shutter 1 can be sufficiently attached. If there is only one upper frame base material, it may be disposed between the upper frame base materials 31, 34 in the above embodiment. In the embodiment, the gap concealing member 35 is attached to the visible surface 322 of the soffit base material 32, but it may be attached to another location as long as it is capable of closing the gap that occurs when the soffit base material 32 does not abut against the FRP waterproof layer 26. Moreover, the gap concealing member 35 attached to the lower part of the visible surface 332 of the vertical frame base material 33 may also be attached to another location as described above. In the previous embodiment, the gap concealing member 35 is configured and arranged to conceal the gap with the sliding window 4, but this is not limited to this, and the gap concealing member 35 may be configured and arranged so that an elastic abutment body 354 or the like abuts against the FRP waterproof layer 26 on the outer periphery of the sliding window 4, and even in this case, light leakage from between the soffit base material 32 or vertical frame base material 33 and the sliding window 4 can be suppressed. In the embodiment, the shutter 1 has a frame body (four-sided frame) formed by framing the upper frame 11, the lower frame 12, and the left and right vertical frames 13, but this is not limited thereto, and it is also possible to have a frame body (three-sided frame) excluding the lower frame 12. Also, the base frame (four-sided base frame) is formed by framing the upper frame base material 34, the lower frame base material 32, and the left and right vertical frame base materials 33, but it is also possible to form a base frame (three-sided base frame) excluding the lower frame base material 32. In the above embodiment, upper frame base materials 31, 34, lower frame base material 32 and left and right vertical frame base materials 33, which are separate from the shutter case 18, upper frame 11, lower frame 12 and left and right vertical frames 13, are attached to the shutter case 18, upper frame 11, lower frame 12 and left and right vertical frames 13, but this is not limited to the above, and it is also possible to form the upper frame base materials 31, 34, lower frame base material 32 and left and right vertical frame base materials 33 integrally with the shutter case 18, upper frame 11, lower frame 12 and left and right vertical frames 13. In the above embodiment, the base frame is fixed to the building structure 2 and then the shutter 1 is attached to the base frame, but this is not limited to this, and the base frame may be attached to the shutter 1 and then the base frame may be fixed to the building structure 2. In the above embodiment, the sliding window 4 is used as the fitting, but it is not limited to this and may be any other type of window or other fitting. Also, the shutter 1 (exterior fitting) is used as the building attachment, but it is not limited to this and may be any other type of building attachment.

[0019] [Summary of the invention] The mounting structure for a building attachment of the present invention is a mounting structure for mounting a building attachment to a building structure having an opening formed therein in which fittings are to be installed, wherein the exterior wall surface of the building structure is composed of an exterior wall material and a waterproof layer which is lower than the exterior wall material and has a projected position on the indoor side, an upper frame base material, a lower frame base material and left and right vertical frame base materials are attached to the building attachment, the upper frame base material, the lower frame base material and the left and right vertical frame base materials are framed to form a base frame, the upper frame base material and the left and right vertical frame base materials are fixed to the building structure facing the outdoor side of the exterior wall material, and the lower frame base material is positioned facing the outdoor side of the waterproof layer with a gap between them. According to the mounting structure for building attachments of the present invention, three sides of the base frame, i.e., the upper frame base material and the left and right vertical frame base materials, are fixed to the building structure, so that sufficient mounting strength for the building attachments can be obtained without fixing the lower frame base material, which is framed with these, to the building structure with screws, etc. Therefore, by fixing the lower frame base material to the building structure with screws, etc., screw holes, etc. are not formed in the waterproof layer, and the waterproof layer can be kept waterproof without a separate waterproofing treatment.

[0020] In the mounting structure for a building attachment of the present invention, the sill base material is positioned below the fitting, and a gap-concealing member that covers the gap between the fitting or the waterproof layer and the sill base material may be attached. According to this configuration, by installing the gap concealing member described above, light leakage from between the sill base material and the fittings can be suppressed.

[0021] In the mounting structure for a building attachment of the present invention, the vertical frame base material is arranged on the left and right outer periphery of the fitting, the lower part of the vertical frame base material is arranged facing the outside side of the waterproof layer, and a gap concealing member that covers the gap between the fitting or the waterproof layer is attached to the lower part of the vertical frame base material. According to this configuration, by installing the gap concealing member described above, light leakage from the lower part of the vertical frame base material and between the fittings can be suppressed.

[0022] In the mounting structure for a building attachment of the present invention, the gap-concealing member has a mounting piece portion that is attached to the base frame and a gap-concealing piece portion that is continuous with the mounting piece portion, and an elastic abutment body that is pressed against the building fixture or the waterproof layer may be installed on the gap-concealing piece portion. With this configuration, the mounting piece portion is attached to the soffit base material or the vertical frame base material in advance, and when these are fixed to the building structure, the elastic abutment body is pressed against the fixture, thereby tightly sealing the gap between the soffit base material or the vertical frame base material and the fixture or the waterproof layer, thereby suppressing light leakage.

[0023] In the mounting structure for building accessories of the present invention, the bottom frame base material is positioned below the door and a gap-concealing member that covers the gap with the door and the fitting is attached to the visible surface portion of the bottom frame base material facing the waterproof layer, the vertical frame base material is positioned on the left and right outer periphery of the door and the lower part of the vertical frame base material is positioned facing the outside of the room with respect to the waterproof layer, and a gap-concealing member that covers the gap with the door and the fitting is attached to the visible surface portion of the lower part of the vertical frame base material facing the waterproof layer, the gap-concealing member has an attachment piece portion attached to the base frame and a gap-concealing piece portion continuous with the attachment piece portion, an elastic abutment body that is pressed against the door and the elastic abutment body of the gap-concealing member attached to one of the bottom frame base material and the vertical frame base material is pressed against the elastic abutment body of the gap-concealing member attached to the other of the bottom frame base material and the vertical frame base material. With this configuration, the elastic abutting bodies of the gap concealing members can be pressed against each other at the corner formed by the lower frame base material and the vertical frame base material, thereby suppressing light leakage from around the corner.

[0024] The base unit of the present invention is characterized in that it is composed of the above-mentioned gap concealing member and a lower frame base material to which the gap concealing member is attached. With this configuration, a base unit can be constructed that can achieve the same effects as the mounting structure for a building attachment of the present invention described above.

[0025] The base unit of the present invention is characterized in that it is composed of the above-mentioned gap concealing member and a vertical frame base material to which the gap concealing member is attached. With this configuration, a base unit can be constructed that can achieve the same effects as the mounting structure for a building attachment of the present invention described above.

[0026] The method for installing a building attachment of the present invention is a method for installing a building attachment to a building structure having an opening in which fittings will be installed, and is characterized in that the upper frame base material, lower frame base material and left and right vertical frame base materials that constitute the above-mentioned base frame are fixed to the building structure in a state of abutment along the exterior wall material that constitutes the exterior wall surface of the building structure, the lower frame base material is positioned facing the outside of the waterproofing layer that constitutes the exterior wall surface of the building structure and has a projected position further inside than the exterior wall material, and the building attachment is attached to the upper frame base material, lower frame base material and left and right vertical frame base materials. According to the method for mounting a building attachment of the present invention, it is possible to configure a method for mounting a building attachment that can achieve the same effects as the mounting structure for a building attachment of the present invention described above.

[0027] In the installation method for a building attachment of the present invention, an installation piece portion of the gap-concealing member described above is attached to at least one of the base materials, the lower frame base material and the vertical frame base material, and the at least one base material may be fixed to the building structure with the elastic abutment body of the gap-concealing member pressed against the building fixture. With this configuration, the gaps between the sill base material and the vertical frame base material and the fixtures can be tightly sealed, thereby suppressing light leakage. [Explanation of symbols]

[0028] 1...shutter (building attachment), 10...frame, 11...upper frame, 12...lower frame, 13...vertical frame, 18...shutter case, 2...building structure, 25...exterior wall material, 26...FRP waterproof layer (waterproof layer), 3...balcony, 31, 34...upper frame base material, 32...lower frame base material, 33...vertical frame base material, 35...gap concealing member, 351...mounting piece, 352...gap concealing piece, 353...groove, 354...elastic abutment, 37, 38...base unit, 4...sliding window (fitting), 42...window bottom frame, 43...vertical window frame, 5...opening, 6, 8...screw, 7...fixing screw.

Claims

1. A base frame for attaching a building attachment to a building skeleton having an exterior wall surface composed of an exterior wall material and a waterproof layer below the exterior wall material and located on the indoor side, and having an opening in which a fixture is to be installed, It is composed of an upper frame base material, a lower frame base material, and left and right vertical frame base materials arranged vertically. The upper frame base material and the left and right vertical frame base materials are arranged in positions that can abut and face the exterior wall material on the outdoor side, The sill base material is not attached to the waterproof layer, and is disposed at a position that can face the waterproof layer at a distance on the outdoor side. A base frame characterized by:

2. The base frame according to claim 1 , The upper frame base material, the lower frame base material, and the left and right vertical frame base materials are formed hollow. A base frame characterized by:

3. The vertical frame base material in the base frame according to claim 1 or 2 and a gap hiding member arranged in a gap between the vertical frame base material and the building material or the waterproof layer, The gap hiding member is attached to the lower part of the vertical frame base material. A base unit characterized by:

4. In the base unit according to claim 3, The gap hiding member is disposed at a position where the soffit base material of the soffit base according to claim 1 or 2 does not abut against the waterproof layer disposed opposite the soffit base material on the outdoor side with a gap therebetween. A base unit characterized by:

5. In the base unit according to claim 4, The gap hiding member is formed with a groove along its longitudinal direction. A base unit characterized by:

6. In the base unit according to any one of claims 3 to 5, The gap concealing member has an attachment piece portion attached to the vertical frame base material and a gap concealing piece portion continuous with the attachment piece portion. A base unit characterized by:

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