Eaves gutter structure

Abstract

To provide an eaves gutter structure capable of discharging rainwater flowing in an eaves gutter at a high flow rate even when a down-pipe is disposed near the wall surface of a building to extend a length from the wall surface to an eaves of a roof.SOLUTION: An eaves gutter structure 1 comprises: an eaves gutter 10 provided at an eaves of a roof of a building 100; a down-pipe 20 disposed near a wall surface 101 of the building 100; and a drain provided between the eaves gutter 10 and the down-pipe 20. The eaves gutter structure 1 comprises an elbow eaves gutter 30 connected to the eaves gutter 10 to extend from the eaves gutter 10 toward the wall surface 101 and opened at the upper surface. The drain connects the end portion on the wall surface 101 side of the elbow eaves gutter 30 to the down-pipe 20 to induce a siphon phenomenon.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to an eaves gutter structure comprising an eaves gutter provided at the eaves of a building roof, a downspout arranged near a wall surface of the building, and a drain provided between the eaves gutter and the downspout. [Background technology]

[0002] Conventionally, rainwater that flows down into a gutter attached to the eaves of a building roof is collected and sent to a downspout, which then passes through and is discharged from below. In order to increase the amount of wastewater that can be treated in the downspout, it is considered to efficiently drain large amounts of rainwater by using the siphon effect.

[0003] Patent document 1 describes a gate connected between the eaves gutter and the downspout, which is placed behind the eaves ceiling, and a horizontal drain with a garbage prevention net is connected between the gate gutter and the eaves gutter. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2-176058 Summary of the Invention [Problem to be solved by the invention]

[0005] In some cases, when the roof overhang is large, that is, when the length from the building wall to the roof eaves is long, an eaves gutter is provided at the eaves, which is the tip of the eaves. In other cases, when the length from the end of the eaves, which is a small roof, to the fixed end of the wall is long, an eaves gutter is provided at the eaves, which is the tip of the eaves. In these cases, when a tubular lower gutter is connected between the eaves gutter and the downpipe, if the lower gutter is short, the downpipe cannot be placed near the wall, making it difficult to ensure the support strength of the downpipe. On the other hand, if the length of the lower gutter becomes excessively long in order to place the downpipe near the wall, it becomes difficult for the downpipe to cause a siphoning phenomenon. For example, it is considered desirable for the length of the lower gutter to be 2m or less to prevent the siphoning phenomenon from occurring. This leaves room for improvement in terms of realizing high-flow drainage of rainwater that flows through the eaves gutter.

[0006] The object of the present disclosure is to provide an eaves gutter structure that enables drainage of rainwater flowing through the eaves gutter at a high flow rate, even when the down gutter is positioned near the wall of a building and the length from the wall to the eaves of the roof is large. [Means for solving the problem]

[0007] One embodiment of the eaves gutter structure of the present disclosure is an eaves gutter structure comprising an eaves gutter provided at the eaves end of the roof of a building, a downspout arranged near the wall surface of the building, and a drain provided between the eaves gutter and the downspout, and comprising a nominal eaves gutter connected to the eaves gutter, extending from the eaves gutter toward the wall surface and having an open upper surface, and the drain is connected between the wall surface side end of the nominal eaves gutter and the downspout, inducing a siphon effect. Effect of the Invention

[0008] According to the eaves gutter structure of one aspect of the present disclosure, the upper surface of the nominal eaves gutter connected between the eaves gutter and the downpipe is open, and the drain connected between the wall side end of the nominal eaves gutter and the downpipe induces the siphoning phenomenon. This makes it possible to omit or shorten the tubular nominal gutter, which does not have an open upper surface, even if the downpipe is placed near the wall of the building and the length from the wall to the eaves of the roof is long, thereby realizing the drainage of rainwater flowing through the eaves gutter at a high flow rate by utilizing the siphoning phenomenon. [Brief description of the drawings]

[0009] [Figure 1] 1 is a schematic perspective view showing a part of a building provided with an eaves gutter structure according to an embodiment of the present invention. [Diagram 2] This is a view of the eaves gutter structure of Figure 1 as viewed in the direction of arrow A in Figure 1. [Diagram 3] 3 is a diagram showing a drain attachment portion provided in portion B of FIG. 2. FIG. [Figure 4] FIG. 4 is a perspective view showing the drain taken out from FIG. 3. [Diagram 5] 1 is a schematic perspective view showing a part of a building provided with an eaves gutter structure of a comparative example. [Figure 6] This is a view of the eaves gutter structure in Figure 5 as viewed in the direction of arrow C in Figure 5. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the eaves gutter structure according to the present disclosure will be described with reference to the drawings. Note that, when multiple embodiments or modified examples are included below, it is assumed from the beginning that new embodiments will be constructed by appropriately combining the characteristic parts of them. The shapes, arrangements, numbers, materials, etc. described below are examples for the purpose of explanation, and can be appropriately changed depending on the specifications of the eaves gutter structure. In the following, the same symbols are used for equivalent elements in all drawings.

[0011] An embodiment will be described with reference to Figs. 1 to 4. Fig. 1 is a schematic perspective view showing a part of a building 100 provided with an eaves gutter structure 1 of an embodiment. Fig. 2 is a view of the eaves gutter structure 1 as viewed in the direction of arrow A in Fig. 1. In the following description, the side away from a wall 101 of the building 100 will be referred to as the front side, and the side closer to the wall 101 as the rear side. Furthermore, the left-right direction is defined as the left-right direction when a person is standing facing the wall 101.

[0012] A building 100 equipped with an eaves gutter structure 1 includes eaves 102, which is a small roof that protrudes from a wall surface 101 above an entrance door and windows (not shown). The top surface of the eaves 102 is inclined in the vertical direction so as to become lower toward the eaves tip, which is the front end.

[0013] The eaves gutter structure 1 is composed of an eaves gutter 10 provided at the eaves end of the eaves 102, a vertical gutter 20 arranged vertically along the wall surface 101 near the wall surface 101, a nominal eaves gutter 30 connected to the eaves gutter 10 and extending from the eaves gutter 10 toward the wall surface 101, and a drain 40 (Figure 2) provided between the eaves gutter 10 and the vertical gutter 20.

[0014] The eaves gutter 10 is made of, for example, resin, and has a cross-sectional groove shape with the lower ends of the front wall 11 and rear wall (not shown) connected by a bottom plate 12, extending approximately in the left-right direction. The eaves gutter 10 is suspended, for example, by a hanging device (not shown) attached to the building 100, and is positioned to receive rainwater 105 flowing down from the eaves end of the eaves 102. In FIG. 1, the rainwater 105 is indicated by a diagonal lattice portion. The eaves gutter 10 is open on the top, closed at the left end, and open at the right end. The eaves gutter 10 may be fixed to the tip of the eaves 102 by a bracket fixed so as to extend forward.

[0015] The nominal eaves gutter 30 is disposed near the lower end of the right side surface of the eaves 102. The nominal eaves gutter 30 is formed, for example from resin, into a groove-shaped cross section similar to the eaves gutter 10, and extends in the approximately front-to-rear direction, slanting slightly downward toward the rear. The nominal eaves gutter 30 has an open top, an open front end on the side surface of the eaves gutter 10 that is connected to the opening at the right end of the eaves gutter 10, and a closed rear end. A drain hole is formed at the rear end of the bottom plate portion 31 of the nominal eaves gutter 30 for connection to the downpipe 20 via a drain 40 described below.

[0016] The call eaves gutter 30 is suspended and supported, for example, by a hanging device (not shown) attached to the building 100. The call eaves gutter 30 may be fixed to a bracket fixed to the right end of the eaves 102 so as to extend to the right side.

[0017] The downspout 20 is fixed near the wall surface 101 by a plurality of fixing members which are fixed to a plurality of positions in the vertical direction of the wall surface 101 and which fit and fix the downspout 20 at the plurality of positions in the vertical direction.

[0018] The drain 40 is connected to a discharge hole 32 shown in Fig. 3 described later, which is provided in the bottom plate portion 31 of the eaves gutter 30, and the upper end of the downpipe 20 is connected to the portion protruding downward from the discharge hole 32. In this way, the drain 40 is connected between the wall surface 101 side end of the eaves gutter 30 and the downpipe 20. The drain 40 also has a function of inducing a siphon phenomenon.

[0019] FIG. 3 shows the attachment portion of the drain 40 provided at the B portion of FIG. 2. FIG. 4 is a perspective view showing the drain 40 and the downspout joint 50 taken out from FIG. 3. As shown in FIG. 3 and FIG. 4, the drain 40 is formed of, for example, resin, and has a drain tube portion 41, vanes 43 connected to a plurality of circumferential positions of a flange 42 formed at the upper end of the drain tube portion 41, an inner tube portion 44 connected to the radial inner ends of the vanes 43, and a funnel portion 45 provided at the upper end. A male thread 41a is formed on the outer circumferential surface of the drain tube portion 41. In FIG. 4, the male thread is omitted. The radial inner ends of the vanes 43 are connected to the upper end of the inner circumferential surface of the drain tube portion 41. The inner tube portion 44 extends in the vertical direction, and the lower end faces the inner space of the drain tube portion 41. The funnel portion 45 is continuous from the upper end of the inner tube portion 44 and expands in diameter in a trumpet shape toward the upper end.

[0020] When attaching the drain 40 to the eaves gutter 30, the flange 42 of the drain 40 is abutted against the upper surface of the bottom plate portion 31 of the eaves gutter 30, and the drain tube portion 41 is inserted into the discharge hole 32. In this state, the female thread on the inner circumference of the tube portion 51 of the downspout joint 50 is joined to the male thread 41a of the drain tube portion 41 from the underside of the eaves gutter 30, while the bottom plate portion 31 of the downspout 30 is sandwiched between the flange 52 at the upper end of the downspout joint 50 and the flange 42 of the drain 40, and the drain 40 is fixed to the eaves gutter 30. Then, the upper end portion of the downspout 20 is fitted and fixed to the lower portion of the downspout joint 50 from the outside.

[0021] As a result, an inflow opening 46 for introducing rainwater into the inside of the drain 40 is formed by the portion partitioned by the multiple vanes 43 between the outer circumferential end of the upper side surface of the flange 42 of the drain 40 and the outer circumferential end of the upper end of the funnel portion 45. The rainwater that flows into the drain 40 from the inflow opening 46 is introduced into the downspout 20 from the drain tube portion 41. At this time, when the rainwater flowing through the downspout 20 reaches a predetermined flow rate or more, a plug in which the rainwater is clogged is easily formed in a part of the downspout 20. Then, a negative pressure is generated due to the height difference at the plug portion, and the force that pulls the rainwater downward increases, causing a siphon phenomenon in which the rainwater flows down forcefully. According to the above-mentioned drain 40, the effect of rectifying the rainwater can be enhanced by the multiple vanes 43, so that the generation of a vortex can be suppressed when the rainwater flows into the inflow opening 46. This makes it possible to suppress the air from being sucked into the downspout 20 by the vortex, so that better siphon performance can be exhibited and drainage can be improved. In addition, even if at least a portion of the inflow opening 46 is blocked by foreign matter that has flowed down the eaves gutter 30, rainwater will flow in from the upper end of the funnel portion 45 that opens upward, so the drainage function can be prevented from deteriorating.

[0022] The drain attached to the eaves gutter 30 is not limited to this configuration, and various structures can be used as long as they have the function of inducing a siphon effect, compared to a drain that simply has the function of connecting the discharge hole 32 and the downpipe 20.

[0023] According to the above-mentioned eaves gutter structure, the upper surface of the nominal eaves gutter 30 connected between the eaves gutter 10 and the downpipe 20 is open, and the drain 40 connected between the wall surface 101 side end of the nominal eaves gutter 30 and the downpipe 20 induces the siphon phenomenon. As a result, even if the downpipe 20 is arranged near the wall surface 101 and the length from the wall surface 101 to the eaves edge of the eaves 102 is large, a tubular nominal gutter with a closed upper surface can be omitted between the eaves gutter 10 and the downpipe 20, so that the rainwater flowing through the eaves gutter 10 can be drained at a high flow rate (high drainage) by utilizing the siphon phenomenon. The rainwater flows through the eaves gutter 10 and the nominal eaves gutter 30 with the open upper surface as shown by the arrow α direction in Figures 1 and 2, and is then led to the downpipe 20 through the drain 40, and can be drained at a high drainage flow rate by the siphon phenomenon in the downpipe 20 as shown by the arrow β direction in Figures 1 and 2. Furthermore, since the downspout 20 is disposed near the wall surface 101, the support strength of the downspout 20 against the building 100 can be ensured, unlike when the downspout 20 is disposed far away from the wall surface 101.

[0024] Fig. 5 is a schematic perspective view showing a part of a building 100 provided with an eaves gutter structure 1a of a comparative example. Fig. 6 is a view of the eaves gutter structure 1a of Fig. 5 as viewed in the direction of arrow C in Fig. 5. In the comparative example, a lower eaves gutter is not connected to the eaves gutter 10, and instead, rainwater is drained from the lower end of the right end of the eaves gutter 10 through a drain 60 to a lower eaves gutter 62 suspended and supported by the eaves 102. The lower eaves gutter 62 is tubular and inclined downward toward the rear. A downpipe 20 is connected to the rear end of the lower eaves gutter 62.

[0025] In such a comparative example configuration, if downspout 20 is disposed near wall surface 101 and the length from wall surface 101 to the eaves end of eaves 102 becomes long, there is a possibility that the length of downspout 62, which does not have an open top, will become excessively long. As a result, in the comparative example, there is a possibility that it will not be possible to realize high-flow drainage of rainwater that has flowed through eaves gutter 10 by utilizing the siphon effect. According to the embodiment shown in Figures 1 to 4, such inconveniences can be prevented.

[0026] The positional relationship between the eaves 102, the nominal eaves gutter 30, and the vertical gutter 20 in the left-right direction may be reversed from that in the configuration of Figs. 1-2. In addition, in the configuration of Figs. 1-4, the drain 40 is connected between the wall side end of the nominal eaves gutter 30 and the vertical gutter 20 without a tubular nominal gutter, but a tubular nominal gutter may be connected between the drain 40 connected to the wall side end of the nominal eaves gutter 30 and the vertical gutter 20. Even in this case, the nominal gutter can be sufficiently short, so that the rainwater flowing through the eaves gutter 10 can be drained at a high flow rate by utilizing the siphon phenomenon. In addition, in the configuration of Figs. 1-4, the upper surface of the eaves 102 is an inclined surface that slopes downward toward the eaves tip, but the upper surface of the eaves 102 may be a flat surface along a substantially horizontal direction. In addition, in the configuration of the present disclosure, the roof covering the ceiling above the interior of the building extends significantly from the wall surface, i.e., the length from the wall surface to the eaves edge of the roof is large, and an eaves gutter 10 is provided at the eaves edge, a designated eaves gutter 30 extending toward the wall surface 101 is connected to the eaves gutter 10, the wall side end of the designated eaves gutter 30 is connected to a vertical gutter 20 near the wall surface, and a drain 40 is provided to induce a siphon effect. [Explanation of symbols]

[0027] 1,1a eaves gutter structure, 10 eaves gutter, 11 front wall, 12 bottom plate, 20 vertical gutter, 30 nominal eaves gutter, 31 bottom plate portion, 32 discharge hole, 40 drain, 41 drain pipe portion, 41a male thread, 42 flange, 43 blade, 44 inner pipe portion, 45 funnel portion, 46 inlet opening, 50 vertical gutter joint, 51 pipe portion, 52 flange, 60 drain, 62 nominal gutter, 100 building, 101 wall surface, 102 eaves, 105 rainwater.

Claims

[Claim 1] A gutter structure comprising an eaves gutter provided at the eaves of a roof of a building, a vertical gutter arranged near a wall surface of the building, and a drain provided between the eaves gutter and the vertical gutter, A nominal eaves gutter is connected to the eaves gutter, extends from the eaves gutter toward the wall surface, and has an open upper surface; The lateral side of the eaves gutter at the front end opposite the wall surface of the eaves gutter is open and connected to the opening of the lateral end of the eaves gutter on the eaves gutter side, The drain is connected between the wall side end of the eaves gutter and the downspout to induce a siphon phenomenon. Eave gutter structure.

Images