Exterior material

Abstract

To provide an exterior material capable of reducing the generation of wind noise in a groove-like recess.SOLUTION: Exterior materials 4 extend on both sides of a groove-like recessed part 3 arranged in a vertical direction of an exterior wall surface 2 of a building 1. The exterior material 4 includes: a gradient surface 40 having a gradient with respect to the exterior wall surface 2 such that a distance from the exterior wall surface 2 increases as a distance from recessed part outer end parts 30 located on both sides of the groove-like recessed part 3 increases in a plan view of the building 1; and a rising surface 41 rising from the exterior wall surface 2 at a predetermined rising angle with respect to the gradient surface 40 in the plan view of the building 1.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an exterior material.

Background Art

[0002] Conventionally, a groove-shaped gondola rail for guiding a gondola has been provided on the outer wall surface of a building and is used for various operations such as building renovation and cleaning (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When there is a groove-shaped recess such as a gondola rail on the outer wall surface of a building, when strong wind blows against the groove-shaped recess, a wind-cutting sound called cavity sound is generated. The cavity sound is considered to be generated by a feedback phenomenon in which when the wind collides with the corner on the windward side of the groove-shaped recess, the vortex peeled off from the corner is propagated to the corner on the leeward side, enters the groove-shaped recess, and returns to the corner on the windward side, thereby inducing further vortices.

[0005] The present invention has been made in view of such circumstances, and an object thereof is to provide an exterior material capable of reducing the generation of wind-cutting sound in a groove-shaped recess.

Means for Solving the Problems

[0006] The present invention solves the above problems, and an exterior material according to an embodiment of the present invention is an exterior material extending on both sides of a groove-shaped recess arranged in the vertical direction of the outer wall surface of a building, In the plan view of the building, a gradient surface having a gradient with respect to the outer wall surface such that the distance from the outer wall surface increases as the distance from the outer end portions of the recesses located on both sides of the groove-shaped recess increases, and in the plan view, a rising surface rising from the outer wall surface so as to form a predetermined rising angle with respect to the gradient surface.

Advantages of the Invention

[0007] According to the exterior material according to an embodiment of the present invention, since the gradient surface has a gradient such that the distance from the outer wall surface increases as the distance from the outer end portions of the recesses located on both sides of the groove-shaped recess increases, when the wind collides with the tip of the gradient surface located on the windward side, the vortex diverging from the tip is suppressed from entering the groove-shaped recess. Therefore, the generation of wind noise in the groove-shaped recess can be reduced.

[0008] Problems, configurations, and effects other than those described above will be clarified in the embodiments for carrying out the invention described later.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0010] Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.

[0011] FIG. 1 is a perspective view and a partial enlarged view showing an example of a building 1 according to an embodiment.

[0012] The building 1 is a multi-story building having a plurality of floors, and is used, for example, for purposes such as apartment houses, office buildings, hotels, and commercial facility buildings. Further, the building 1 can adopt any building structure such as a reinforced concrete structure, a steel frame structure, a steel frame reinforced concrete structure, or a precast concrete structure.

[0013] The building 1 includes an outer wall surface 2 that constitutes the exterior of the building 1, a groove-shaped recess 3 disposed in the vertical direction of the outer wall surface 2 of the building 1, and exterior materials 4 extending on both sides of the groove-shaped recess 3. Note that FIG. 1 schematically shows the exterior of the building 1, and details of other components (for example, windows, balconies, etc.) are omitted.

[0014] The outer wall surface 2 is composed of, for example, an outer wall material such as a concrete wall, a curtain wall, a ceramic siding, a metal siding, a resin siding, an ALC board, or tiles.

[0015] The groove-shaped recess 3 is used, for example, as a gondola rail to which a gondola used for various operations such as renovation and cleaning can be attached. The groove-shaped recesses 3 are arranged in parallel at a predetermined interval in the horizontal direction with respect to the outer wall surface 2, for example, according to the shape and size of the gondola. Note that the groove-shaped recess 3 is not limited to being used as a gondola rail, and its use, position, shape, etc. are not particularly limited as long as it is provided on the outer wall surface 2. For example, the groove-shaped recess 3 may be provided at a joint or a gap of an outer wall material such as a curtain wall. Further, the groove-shaped recess 3 may be one to which an instrument other than the gondola rail is attached, or may be provided for decoration or design. Furthermore, the groove-shaped recess 3 may be provided at a corner of the building 1.

[0016] Since the exterior material 4, for example, extends in the vertical direction of the building 1, it is composed of long components and is extended throughout the vertical direction of the building 1 by connecting them in the vertical direction. At that time, the upper end of the exterior material 4 may be located on the top floor or on a floor below the top floor. Also, the lower end of the exterior material 4 may be located on the ground floor or on a floor above the ground floor.

[0017] The exterior material 4 may be composed of, for example, a member separate from the concrete wall or exterior wall material that constitutes the outer wall surface 2, or may be integrally formed with the concrete wall or exterior wall material as a part of the shape of the concrete wall or exterior wall material. In the present embodiment, the case where the exterior material 4 is attached to the concrete wall or exterior wall material as a separate member will be described. At that time, the exterior material 4 may be attached during the construction of the building 1, or may be retrofitted or replaced during the renovation of the building 1.

[0018] The material of the exterior material 4 is selected in consideration of weather resistance and strength. For example, it is made of a metal such as aluminum or a resin such as vinyl chloride. Note that the exterior material 4 may be composed of a single component or may be composed by combining a plurality of components.

[0019] Hereinafter, as a specific configuration of the exterior material 4, the exterior materials 4A to 4F shown in the first to sixth embodiments will be described respectively.

[0020] FIG. 2 is a cross-sectional view showing a first embodiment of the exterior material 4A. FIG. 3 is a cross-sectional view showing a second embodiment of the exterior material 4B. FIG. 4 is a cross-sectional view showing a third embodiment of the exterior material 4C. FIG. 5 is a cross-sectional view showing a fourth embodiment of the exterior material 4D. FIG. 6 is a cross-sectional view showing a fifth embodiment of the exterior material 4E. FIG. 7 is a cross-sectional view showing a sixth embodiment of the exterior material 4F.

[0021] Figures 2 to 7 mainly show the configurations of the groove-shaped recess 3 and the exterior materials 4A to 4F, and the details of other components (for example, steel frames, reinforcing bars, walls, columns, etc.) are omitted or simplified. The exterior materials 4A to 4C in the first to third embodiments extend on both sides of the groove-shaped recess 3 disposed on the flat outer wall surface 2 as shown in Figures 2 to 4. The exterior materials 4D to 4F in the fourth to sixth embodiments extend on both sides of the groove-shaped recess 3 disposed at the apex portion of the convex outer wall surface 2 as shown in Figures 5 to 7.

[0022] First, the features of the groove-shaped recess 3 and the exterior materials 4A to 4F common to the first to sixth embodiments will be described with reference to Figures 2 to 7.

[0023] The groove-shaped recess 3 includes, in a plan view of the building 1, recess outer end portions 30 located on both sides of the groove-shaped recess 3, and recess inner side surfaces 31A to 31C and a recess bottom surface 32 that form the groove-shaped recess 3. Further, the groove-shaped recess 3 includes a first cavity portion 33A surrounded by the recess inner side surface 31A and having a groove width W1, and a second cavity portion 33B surrounded by the recess inner side surfaces 31B, 31C, and the recess bottom surface 32 and having a groove width W2.

[0024] The recess outer end portion 30 is an end portion located outside the recess inner side surface 31A and is located at a portion where the outer wall surface 2 and the recess inner side surface 31A intersect. Note that the recess outer end portion 30 may be chamfered.

[0025] The groove width W1 is the distance between the recess outer end portions 30 (the recess inner side surface 31A), and the groove width W2 is the distance between the recess inner side surfaces 31C, and the groove width W2 is wider than the groove width W1. The groove depth D1 is the depth of the first cavity portion 33A, and the groove depth D2 is the depth of the second cavity portion 33B. Therefore, the overall depth of the groove-shaped recess 3 is the sum of the groove depth D1 and the groove depth D2. Note that the shape and size of the groove-shaped recess 3 are not limited to the examples in Figures 2 to 7.

[0026] The exterior materials 4A to 4F have a gradient surface 40 with a gradient with respect to the outer wall surface 2 such that the distance from the outer wall surface 2 increases as the distance from the outer end portion 30 of the recessed portion increases in the plan view of the building 1, and a rising surface 41 that rises from the outer wall surface 2 so as to form a predetermined rising angle θ2 with respect to the gradient surface 40 in the plan view of the building 1.

[0027] Since the exterior materials 4A to 4F are respectively extended on both sides of the groove-shaped recess 3, as shown in FIGS. 2 to 7, the gradient surface 40 and the rising surface 41 are provided on the left side of the groove-shaped recess 3, and the gradient surface 40 and the rising surface 41 are provided on the right side of the groove-shaped recess 3. At this time, the left gradient surface 40 and rising surface 41, and the right gradient surface 40 and rising surface 41 preferably have symmetrical shapes and sizes and are symmetrically arranged with respect to the groove-shaped recess 3. In addition, the exterior materials 4A to 4F may be formed in a hollow shape in the vertical direction of the building 1.

[0028] The gradient surface 40 has a base end portion 40a located on the outer end portion 30 side of the groove-shaped recess 3 and a tip end portion 40b located on the side opposite to the base end portion 40a. The gradient surface 40 is formed, for example, in a planar shape and is arranged such that the distance from the outer wall surface 2 to the base end portion 40a is short and the distance from the outer wall surface 2 to the tip end portion 40b is long when the outer wall surface 2 connected to the outer end portion 30 of the recess is used as a reference. The gradient surface 40 and the rising surface 41 are preferably planar, but may be curved.

[0029] The gradient angle θ1 on the groove-shaped recess 3 side formed by the gradient surfaces 40 respectively extended on both sides of the groove-shaped recess 3 is 180 degrees or more. This relationship is represented by the following formula (1). Gradient angle θ1 ≥ 180 degrees ···(1)

[0030] Therefore, the groove-shaped recess 3 located between the pair of gradient surfaces 40 is arranged at a deeper position compared to the case where the exterior material 4 is not attached. As a result, when the wind collides with the tip end portion 40b of the gradient surface 40 located on the windward side, the vortex deviating from the tip end portion 40b can be made difficult to enter the groove-shaped recess 3.

[0031] The rising angle θ2 formed by the rising surface 41 with respect to the inclined surface 40 on the side of the groove-shaped recess 3 is 90 degrees or less. This relationship is represented by the following formula (2). Rising angle θ2 ≤ 90 degrees ···(2)

[0032] Therefore, an obtuse angle is formed at the tip 40b of the inclined surface 40. As a result, when the wind collides with the tip 40b of the inclined surface 40 located on the upwind side, the flow of the wind peels off at the tip 40b, making it easier for vortices to occur. Note that the tip 40b may be chamfered to such an extent that the above function is not impaired. Also, the angle formed by the rising surface 41 with respect to the outer wall surface 2 may be 90 degrees (right angle) or other angles as shown in FIGS. 2 to 4.

[0033] The inclined surface length L (L1 to L3 shown in FIGS. 2 to 7) between the base end 40a of the inclined surface 40 located on the side of the groove-shaped recess 3 and the tip 40b of the inclined surface 40 located on the side opposite to the base end 40a is equal to or greater than the value obtained by multiplying the groove width W1 of the groove-shaped recess 3 by 0.5. This relationship is represented by the following formula (3). Inclined surface length L ≥ 0.5·W1 ···(3)

[0034] Therefore, since the inclined surface length L is defined by the groove width W1 of the groove-shaped recess 3, the tip 40b of the inclined surface 40 is arranged at a position separated from the outer end 30 of the recess by a distance corresponding to the groove width W1 of the groove-shaped recess 3. As a result, when the wind collides with the tip 40b of the inclined surface 40 located on the upwind side, it is possible to make it difficult for the vortices deviating from the tip 40b to enter the groove-shaped recess 3. Note that in the exterior materials 4A, 4C, 4D, and 4F in the first, third, fourth, and sixth embodiments, the base end 40a of the inclined surface 40 and the outer end 30 of the recess are arranged adjacent to each other.

[0035] The features of the exterior materials 4B and 4E in the second and fifth embodiments will be described with reference to FIGS. 3 and 6. The exterior materials 4B and 4E are disposed between the outer end portion 30 of the recess and the gradient surface 40 in a plan view of the building 1, and include an extension surface 42 that extends the inner surface 31A of the recess from the outer end portion 30 of the recess. The extension surface 42 is preferably disposed along the extension line of the inner surface 31A of the recess. Therefore, the extension surface 42 is preferably planar, but may be curved.

[0036] Since the exterior materials 4B and 4E include the extension surface 42, the groove-shaped recess 3 located between the pair of gradient surfaces 40 will be disposed at a more recessed position than when the extension surface 42 is not provided. Thereby, when the wind collides with the tip portion 40b of the gradient surface 40 located on the windward side, it is possible to make it difficult for the vortex deviating from the tip portion 40b to enter the groove-shaped recess 3.

[0037] The features of the exterior materials 4C and 4F in the third and sixth embodiments will be described with reference to FIGS. 4 and 7. The exterior materials 4C and 4F are composed of a plate-shaped member 43 and a support member 44 as its components. The gradient surface 40 in the exterior materials 4C and 4F is the surface of the plate-shaped member 43. Also, the rising surface 41 in the exterior materials 4C and 4F is a part of the surface of the support member 44 and supports the back surface of the plate-shaped member 43. At this time, the rising surface 41 preferably intersects the back surface of the plate-shaped member 43 at an intersection position P2 closer to the tip portion 40b than the intermediate position P1 between the outer end portion 30 of the recess and the tip portion 40b of the gradient surface 40 located on the side opposite to the groove-shaped recess 3. Note that the support member 44 may be formed in a hollow shape.

[0038] Since the exterior materials 4C and 4F include a plate-shaped member 43 whose surface functions as the gradient surface 40 and a support member 44 that supports the plate-shaped member 43, the exterior materials 4C and 4F can be realized with a simple configuration.

[0039] As described above, according to the exterior material 4 (4A to 4F) according to the present embodiment, since the gradient surface 40 has a gradient such that the distance from the outer wall surface 2 increases as it moves away from the outer end portion 30 of the recess on both sides of the groove-shaped recess 3, when the wind collides with the tip portion 40b of the gradient surface 40 located on the windward side, even if the vortex separated from the tip portion 40b flows to the leeward side, it is suppressed from entering the groove-shaped recess 3. Therefore, the generation of wind noise in the groove-shaped recess 3 can be reduced.

[0040] Further, when the gradient surface 40 and the rising surface 41 in the exterior material 4 (4A to 4F) satisfy the above formulas (1) to (3), the groove-shaped recess 3 located between the pair of gradient surfaces 40 is arranged at a deeper position, and the tip portion 40b of the gradient surface 40 is arranged at a position separated from the outer end portion 30 of the recess by a distance corresponding to the groove width W1 of the groove-shaped recess 3. In addition, an obtuse angle is formed at the tip portion 40b of the gradient surface 40. Thereby, when the wind collides with the tip portion 40b of the gradient surface 40 located on the windward side, the flow of the wind is peeled off at the tip portion 40b to easily generate a vortex, and the vortex can be made difficult to enter the groove-shaped recess 3. Therefore, the generation of wind noise in the groove-shaped recess 3 can be reduced.

[0041] (Other Embodiments) The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments and can be appropriately changed without departing from the technical idea of the present invention.

[0042] In the above embodiment, the case where the exterior material 4 is composed of a member separate from the concrete wall or the exterior wall material constituting the outer wall surface 2 has been described. On the other hand, the exterior material 4 may be integrally formed with the concrete wall or the exterior wall material constituting the outer wall surface 2. In this case, by treating the surface connecting the outer wall surface 2 where the exterior material 4 is not provided and the outer end portion 30 of the recess as a virtual outer wall surface 2, in the same manner as the above embodiment, the gradient surface 40 is arranged so as to form a gradient angle θ1 with respect to the outer wall surface 2, and the rising surface 41 is raised from the outer wall surface 2 so as to form a rising angle θ2 with respect to the gradient surface 40.

Explanation of Reference Numerals

[0043] 1... Building, 2... Outer wall surface, 3... Grooved recess, 4, 4A - 4F... Exterior finishing materials 30... Outer end of the recess, 31A - 31C... Inner side surfaces of the recess, 32... Bottom surface of the recess 33A... First cavity part, 33B... Second cavity part 40... Slope surface, 40a... Base end part, 40b... Tip end part 41... Upright surface, 42... Extension surface, 43... Plate - shaped member, 44... Support member

Claims

1. An exterior material extending on both sides of a groove-shaped recess arranged in the vertical direction on the outer wall surface of a building, In a plan view of the building, a gradient surface having a gradient with respect to the outer wall surface such that the distance from the outer wall surface increases as the distance from the outer end of the recess on both sides of the groove-shaped recess increases, In the plan view, a rising surface rising from the outer wall surface so as to form a predetermined rising angle with respect to the gradient surface. Exterior material.

2. The gradient angle on the groove-shaped recess side formed by the gradient surfaces respectively extending on both sides of the groove-shaped recess is 180 degrees or more. The exterior material according to Claim 1.

3. The rising angle on the groove-shaped recess side is 90 degrees or less. The exterior material according to Claim 1.

4. The gradient surface length between the base end of the gradient surface located on the groove-shaped recess side and the tip end of the gradient surface located on the side opposite to the base end is equal to or greater than the value obtained by multiplying the groove width of the groove-shaped recess by 0.

5. The exterior material according to Claim 1.

5. In the plan view, an extension surface is provided between the outer end of the recess and the gradient surface, and the extension surface extends the inner surface of the recess of the groove-shaped recess from the outer end of the recess. The exterior material according to Claim 1.

6. The gradient surface is The surface of a plate-shaped member, The rising surface is At an intersection position closer to the tip end than the intermediate position between the outer end of the recess and the tip end of the gradient surface located on the side opposite to the groove-shaped recess side, it intersects the back surface of the plate-shaped member. The exterior material according to any one of Claims 1 to 5.

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