building
The integration of a metal gutter within a wooden overhang groove addresses the strength issue in wooden projecting portions, allowing gutter installation without compromising structural integrity and reducing costs.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- OHBAYASHI GUMI LTD
- Filing Date
- 2022-09-01
- Publication Date
- 2026-06-23
AI Technical Summary
Existing wooden projecting portions in buildings, such as eaves or roof overhangs, face challenges in installing grooved gutters due to insufficient strength at the gutter-provided portions.
A building design featuring a wooden board overhang with a groove on its upper surface and a metal gutter fixed within the groove, reinforcing the overhang's strength without increasing its thickness.
Enables the installation of a gutter on a wooden overhang without reducing its structural integrity, maintaining strength and reducing construction costs.
Smart Images

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Abstract
Description
Technical Field
[0001] The present invention relates to a building having a plate-shaped projecting portion that projects from an outer wall, such as an eaves portion or a roof overhang of a roof.
Background Art
[0002] In various buildings such as warehouses, factories, and houses, in order to suppress the intrusion of rain, sunlight, etc. from the entrance or windows, it is common to provide a projecting portion that projects from the outer wall, such as an eaves portion or a roof overhang of a roof.
[0003] Conventionally, in such buildings, it is known to provide a groove-shaped gutter on the upper surface of the projecting portion to suppress the dripping of rainwater, etc. from the tip of the projecting portion (see, for example, Patent Document 1).
Prior Art Documents
Patent Documents
[0004]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0005] In recent years, in order to promote the use of wood, it has been proposed to form roofs, eaves, etc. with wooden boards even in buildings such as warehouses and factories.
[0006] However, in a projecting portion formed of a wooden board, if it is configured to provide a groove-shaped gutter on the upper surface, there is a problem that it becomes difficult to provide the gutter because the strength of the projecting portion is insufficient at the portion where the gutter is provided.
[0007] The present invention has been made in view of such problems, and an object thereof is to be able to provide a gutter in a projecting portion formed of a wooden board without reducing the strength. [Means for solving the problem]
[0008] The present invention relates to a building having a plate-like overhang portion extending from an exterior wall, wherein the overhang portion is made of a wooden board material and comprises a main body portion having a groove opening on its upper surface, and a metal gutter fixed to the main body portion in the groove.
[0009] In the building of the present invention, it is preferable that the overhang portion constitutes the eaves portion of a wooden roof.
[0010] In the building of the present invention, it is preferable that the overhang portion constitutes an awning. [Effects of the Invention]
[0011] According to the present invention, it is possible to install a gutter on an overhang made of wooden board material without reducing its strength. [Brief explanation of the drawing]
[0012] [Figure 1] This is a front view cross-sectional view of a building relating to one embodiment of the present invention. [Figure 2] Figure 1 is a plan view of the main part of the building shown. [Figure 3] This is a cross-sectional view along line AA in Figure 2. [Figure 4] This is a cross-sectional view of a building according to another embodiment. [Modes for carrying out the invention]
[0013] The following describes in detail a building 1 according to one embodiment of the present invention, with reference to the drawings.
[0014] As shown in FIG. 1, the building 1 according to this embodiment can be configured to have, for example, an outer wall 2, an inner wall 3, a roof support structure 4, and a roof 5. This building 1 can be used for a warehouse, a factory, etc., and has a column - free space 6 that extends between the outer wall 2 and the inner wall 3 and between the roof 5 and the floor 7.
[0015] The inner wall 3 partitions the space adjacent to the column - free space 6 from the column - free space 6. The roof support structure 4 has a truss structure, spans between the outer wall 2 and the inner wall 3, and supports the roof 5.
[0016] The building 1 may further have a pair of front walls 8 (only one is shown in FIG. 1) perpendicular to the outer wall 2 and the inner wall 3, and the column - free space 6 may be configured to be surrounded and closed by the outer wall 2, the inner wall 3, and the pair of front walls 8 on all four sides.
[0017] Note that the configurations of the inner wall 3, the roof support structure 4, etc. of the building 1 are not limited to the above and can be variously changed. Also, the building 1 is not limited to being used for a warehouse, a factory, etc., and may be used for other purposes such as a house, for example.
[0018] The roof 5 is formed of a wooden board material (for example, a wooden insulation panel), spans between the outer wall 2 and the inner wall 3, is supported by the roof support structure 4, and covers the upper part of the column - free space 6. In this embodiment, the roof 5 is inclined such that the side closer to the outer wall 2 is lower than the side closer to the inner wall 3.
[0019] The roof 5 can also be configured to have a roof covering structure 5a such as vertical shingle roofing on its upper surface.
[0020] As shown in FIGS. 2 and 3, the roof 5 projects outward from the outer wall 2 on the side of the outer wall 2. The projecting portion 10 of the roof 5 projecting from the outer wall 2 constitutes the eaves portion of the wooden roof 5. The projecting portion 10 is inclined like the roof 5, and its tip extends straight along the outer wall 2.
[0021] The overhanging portion 10 has a main body portion 11 formed of a wooden board material as a part of the roof 5. A groove 11b opening to the upper surface 11a is provided in the main body portion 11. In the present embodiment, the groove 11b opens to the upper surface 11a of a portion closer to the tip side of the main body portion 11, and extends straight from one end to the other end in the direction along the outer wall 2 of the main body portion 11 parallel to the outer wall 2, and its cross section is rectangular.
[0022] The main body portion 11 may be configured such that a decorative board 11d formed of, for example, a CLT (Cross Laminated Timber) material is attached to the lower surface 11c thereof. This can enhance the aesthetic appearance when the overhanging portion 10 is viewed from below.
[0023] A metal gutter 12 is provided in the overhanging portion 10. In the present embodiment, the gutter 12 is made of steel. The gutter 12 is fixed to the main body portion 11 in the groove 11b and is arranged to open upward. The gutter 12 extends straight from one end to the other end in the direction along the outer wall 2 of the main body portion 11 along the groove 11b. By providing the gutter 12 in the overhanging portion 10, rainwater and the like flowing through the overhanging portion 10 can be collected by the gutter 12, and dripping of rainwater and the like from the tip of the overhanging portion 10 can be suppressed.
[0024] Although not shown in detail, vertical gutters for discharging rainwater and the like collected by the gutter 12 may be provided at both ends or intermediate portions in the longitudinal direction of the gutter 12.
[0025] The gutter 12 is fixed to the main body portion 11 in the groove 11b by, for example, an adhesive or the like in a state where the outer peripheral surface thereof is in close contact with the inner peripheral surface of the groove 11b. In the present embodiment, the gutter 12 has a U-shaped cross section having a flat plate-like bottom wall 12a and a pair of side walls 12b perpendicular to the bottom wall 12a, and is fixed to the main body portion 11 in a state where the bottom wall 12a is in close contact with the bottom surface of the groove 11b and the pair of side walls 12b are in close contact with the side surfaces of the groove 11b, respectively.
[0026] Thus, in the building 1 of this embodiment, a groove 11b is provided on the upper surface 11a of the main body 11, which is made of wooden board material, and the gutter 12 is fixed to the main body 11 in this groove 11b. As a result, even if a groove 11b is formed in the main body 11 which is made of wooden board material, the strength of the main body 11 in the part where the groove 11b is provided is reinforced by the metal gutter 12, and the gutter 12 can be provided on the overhanging part (eaves part) 10 which is made of wooden board material without reducing its strength.
[0027] Furthermore, since the gutter 12 can be installed on the overhang portion 10, which is made of wooden board material, without increasing the thickness of the main body portion 11 and without reducing its strength, it is possible to use wooden board material of an appropriate thickness for the main body portion 11 and the roof 5 to which the main body portion 11 is integrally installed, thereby reducing the construction cost of the building 1 in which the gutter 12 is installed on the overhang portion 10.
[0028] The present invention is not limited to the embodiments described above, and various modifications are possible without departing from the spirit of the invention.
[0029] For example, in the above embodiment, the groove 11b has a rectangular cross-section and the metal trough 12 has a U-shaped cross-section, but it is not limited to this, and other shapes are also possible, such as the groove 11b having a semicircular cross-section and the trough 12 having an arc-shaped cross-section.
[0030] Furthermore, although the gutter 12 is made of steel in the above embodiment, it is not limited to steel, and the gutter 12 may be made of other metals as long as it can reinforce the main body 11.
[0031] Furthermore, although the above embodiment showed that the overhang portion 10 is the eaves portion of the roof 5, it is not limited to this, and as shown in Figure 4, the overhang portion 10 may be configured as a canopy that extends from the exterior wall 2 above a window 20 or the like, separate from the roof 5. In this case as well, the main body portion 11 is provided extending from the exterior wall 2, and a metal gutter 12 is fixed to a groove 11b provided on its upper surface 11a, so that the gutter 12 can be provided on the canopy (overhang portion 10) made of wooden board material without reducing its strength. [Explanation of Symbols]
[0032] 1 Building 2. Exterior walls 3 Inner wall 4. Roof support structure 5. Roof 5a Roofing structure 6 Columnless space 7 beds 8 Front wall 10. Protruding section 11 Main body 11a Top surface 11b Groove 11c Bottom side 11d decorative panel 12 Gutters 12a Bottom wall 12b side wall 20 windows
Claims
1. A building having a plate-like overhang that extends from the exterior wall, The aforementioned protruding portion, The main body is made of wooden board material and has a groove opening on its upper surface, A building characterized by having a metal gutter fixed to the main body in the groove.
2. The building according to claim 1, wherein the overhanging portion constitutes the eaves portion of a wooden roof.
3. The building according to claim 1, wherein the overhanging portion constitutes an awning.