JP6279795B1 - Drainage member - Google Patents

Abstract

[PROBLEMS] To achieve excellent siphon performance with a simple structure with low cost and excellent workability. A lid that is installed inside the eaves wall 10 at a position spaced upward from the bottom surface 10a, and that forms an inflow opening 2A between which the rainwater in the eaves wall 10 is dropped and flows into the mouth. The lid member 21 is disposed so as to close the opening of the drop opening portion 20 when viewed from the vertical direction, and the projected area of the lid member 21 with respect to the plane orthogonal to the vertical direction is dropped. A drainage member having a configuration that is set larger than the projected area and provided at a height H of 10 to 50 mm upward from the bottom surface 10a is provided. [Selection] Figure 3

Description

  The present invention relates to a drainage member.

Conventionally, as a rain gutter system that receives rainwater flowing down from the eaves of the roof and drains it downward, eaves attached to the eaves of the roof of the house are connected to the eaves by a gutter joint, along the outer wall. It is common to hang down and connect to a drain pipe buried in the ground.
On the other hand, this type of rain gutter system is required to increase the amount of drainage per unit time without impairing the appearance of a house or the like so that rainwater can be suitably discharged into a drain pipe even during heavy rain. . Therefore, in order to increase the flow rate of water that can be treated in the eaves, it is necessary to increase the cross-sectional dimension of the eaves itself, increase the diameter of the call or the eaves, or increase the number of the eaves. However, these have problems such as an increase in cost and a decrease in appearance.

  Therefore, as a rain gutter device that increases the amount of wastewater treatment without increasing the diameter or number of calibers, for example, by setting the opening area of a gutter and a callee as described in Patent Document 1 to appropriate dimensions. There is known a siphon type drainage device that can drain a large amount of rainwater very efficiently by siphon action during heavy rain. The drainage device of Patent Document 1 has a configuration in which the vortex preventing member is attached to the upper end portion of the siphon tube on the lower surface side of the eaves and the suction of air due to the vortex is eliminated, thereby stabilizing the drainage due to the siphon action. .

JP 2004-308399 A

However, the conventional siphon-type drainage device as shown in Patent Document 1 described above has a structure in which a vortex preventing member (drainage member) is attached to the upper end portion of the siphon tube, but a hand is inserted near the bottom surface of the eaves bowl. There was a problem in terms of workability. In addition, since the vortex preventing member has a shape along the inner surface of the tub tube, for example, when a foreign substance flowing in from the eaves is clogged with the eddy current preventing member, it is difficult to remove the eddy current preventing member, which takes time and labor. Therefore, there was room for improvement in that respect.
Moreover, since the opening area of the soot was as small as 20 cm ² or less, the maximum drainage flow rate was not sufficient even if the siphon action was used.
Moreover, since it is necessary to prepare a drainage member suitable for each caliber of the ridge, there is a problem in terms of economy, and it can be easily adjusted on the spot according to the size of the eaves ridge and ridge, There has been a demand for providing suitable siphon performance.

  Therefore, the present invention has been made in view of the above problems, and an object thereof is to provide a drainage member capable of exhibiting excellent siphon performance with a simple structure with low cost and excellent workability. Yes.

In order to achieve the above object, a drainage member according to the present invention includes an eave ridge and a ridge connected to a drop opening portion having a cylindrical portion that penetrates a through hole formed on the bottom surface side of the eave ridge. A drainage member for generating a siphon action provided in a rain gutter provided, installed at a position spaced upward from the bottom surface inside the eaves gutter, and in the eave gutter between the bottom surface A lid member that forms an inflow opening for allowing rainwater to flow into the mouth; the lid member is disposed so as to close the opening of the mouth part when viewed from above in the vertical direction; The projected area of the lid member is set larger than the projected area of the opening of the drop opening, and the lid diameter or minimum width dimension of the lid member is larger than the outer diameter of the opening that is the inner diameter of the cylindrical portion of the drop opening, And 245% or less of the outer diameter of the opening, and the front When the height of the lid member is H and the opening outer diameter of the drop opening is R1, the value of R1 / H satisfies the range of 1.3 to 8.0, and the value of H is 10 to 50 mm. The opening area of the drop opening is 30 cm ² or more and 190 cm ² or less .

In the present invention, as viewed from above in the vertical direction, the opening of the drop opening is closed, the value of R1 / H satisfies the range of 1.3 to 8.0, and the value of H ranges from 10 to 50 mm. By setting the position of the lid member so that it fills and the opening area of the drop opening portion is 30 cm ² or more and 190 cm ² or less , even when a large amount of rainwater flows from the inflow opening during heavy rain, Becomes full of water and sealed. Therefore, a siphon phenomenon can be generated in the cocoon and clogging of foreign matters such as fallen leaves can be prevented, so that excellent siphon performance can be obtained.
That is, when the height H of the lid member is smaller than 10 mm, foreign matters such as fallen leaves are easily clogged in the inflow opening portion, and the inflow opening area is reduced, so that a desired drainage flow rate cannot be ensured. In addition, when the height H of the lid member exceeds 50 mm, the rainwater level necessary for the generation of the siphon increases excessively, and it becomes difficult to generate the siphon because air is easily sucked, resulting in a decrease in drainage performance. Therefore, it is preferable that the height H of the lid member as described above is in the range of 10 to 50 mm.

  Further, in the present invention, the lid member has a configuration in which the projection area of the lid member is dropped and the lid member larger than the projection area of the opening of the mouth portion is set at a predetermined height from the bottom surface of the eaves. Therefore, it becomes the operation | work which attaches a cover member from the upper side of an eaves rod, can reduce the operation | work in the lower surface side of an eaves rod, and can reduce the effort and time concerning attachment and removal of a cover member. In addition, the siphon performance can be adjusted by changing the height from the bottom surface of the lid member according to the shape of the eaves (bottom width) and the opening area of the opening, so that variations in the lid member can be suppressed to a minimum. Cost can be reduced.

Further, in the drainage member according to the present invention, the lid diameter or the minimum width dimension of the lid member is larger than the opening outer diameter of the opening and 245% or less of the opening outer diameter. Since the flow of rainwater flowing in from the formed inflow opening becomes more stable, the water level in the eaves can be stabilized, and siphons can be generated reliably, so that drainage performance can be enhanced. In particular, when the lid diameter or minimum width dimension of the lid member drops and exceeds 245% of the opening outer diameter of the mouth portion, a phenomenon in which most of the rainwater entering the inflow opening collides with the lid member and the water level rises. Will occur. Therefore, it is preferable that the lid diameter or the minimum width dimension of the lid member as described above falls and is larger than the opening outer diameter of the mouth portion and not more than 245% of the opening outer diameter.

In the drainage member according to the present invention, the eaves ridge includes a bottom wall, a front wall erected from a front end of the bottom wall, and a rear wall erected from a rear end of the bottom wall. The width of the bottom wall is more preferably 120 mm or more and 200 mm or less.

Further, in the drainage member according to the present invention, the drop port portion has a plate-like flange portion extending radially outward from the upper end of the tube portion, and the tube portion and the flange portion are continuously provided. The connecting portion on the inner surface side is more preferably a bell mouth shape formed in a tapered surface or a curved surface .

  Further, the drainage member according to the present invention includes the lid member formed in a plate shape, a mounting cylinder having the drop port portion and fitted into the flange, the lid member and the mounting cylinder. And a vertical rib arranged at intervals in the circumferential direction at a position that does not overlap with the opening of the drop opening when viewed from above in the vertical direction, and between the lid member and the mounting cylinder, An inflow opening is preferably formed.

  In this case, the lid member can be disposed at a predetermined position by fitting the mounting cylinder in which the lid member is integrally provided via the vertical rib with respect to the heel, and the lower surface side of the lid member Thus, an inflow opening having a suitable size is formed between the bottom surface of the eaves and the drainage member can be easily attached. Moreover, in the drainage member according to the present invention, since the vertical rib is provided in the inflow opening portion for allowing rainwater to flow into the outlet, it is possible to give the vertical rib a rectifying effect, and the rainwater absorbs air. Inhalation can be more reliably suppressed.

  In the drainage member according to the present invention, a guide guide is formed on the lower surface of the lid member. The guide guide is formed with a curved portion that gradually extends downward toward the center of the lid in plan view, and the guide guide has the inflow opening. It is preferable that the rainwater that has flowed in is guided so as to be guided to the curved portion and directed toward the outlet.

  In this case, rainwater that has flowed in from the inflow opening is guided by the curved portion of the guide and guided toward the outlet, so that the rainwater can be more reliably suppressed from sucking air.

  According to the drainage member of the present invention, it is possible to exhibit excellent siphon performance with a simple structure with low cost and excellent workability.

It is a figure which shows schematic structure of the rain gutter provided with the siphon drain member by embodiment of this invention. It is the perspective view which looked at the state which attached the siphon drain member in the eaves from diagonally upward. It is the perspective view which fractured | ruptured partially which shows the structure of a siphon drain member. It is an AA arrow directional view shown in FIG. It is a figure which shows the state before attaching the siphon drain member shown in FIG. 4 to an eaves. It is the top view which looked at the siphon drain member installed in the eaves bowl shown in FIG. 4 from upper direction. (A), (b), (c) is sectional drawing for demonstrating the siphon performance in the position of the cover member of a siphon drain member. It is a side view of the experimental apparatus by 1st Example. It is a graph which shows the experimental result by 2nd Example. It is the perspective view which looked at the state which attached the siphon drain member in the funnel by the 1st modification from diagonally upward, Comprising: It is a figure corresponding to FIG. It is a BB arrow directional view shown in FIG. It is a figure which shows the state before attaching the siphon drain member shown in FIG. 11 to an eaves. It is the perspective view which fractured | ruptured partially the structure of the cover member by a 2nd modification seen from diagonally downward. It is the perspective view which fractured | ruptured partially the structure of the cover member by a 2nd modification seen from diagonally upward. It is a side view of the state where the cover member by the 2nd modification was attached to the eaves. It is a figure which shows the state before attaching the cover member shown in FIG. 4 to an eaves. It is a perspective view which shows the structure of the cover member by a 3rd modification. It is the perspective view which decomposed | disassembled the cover member shown in FIG. It is a side view of the state where the lid member by the 4th modification was attached to the eaves. It is sectional drawing which shows the state which has arrange | positioned the cover member to the funnel by a 5th modification. It is sectional drawing which shows the state which has arrange | positioned the cover member to the funnel by a 6th modification. It is sectional drawing which shows the state which has arrange | positioned the cover member to the funnel by a 7th modification.

  Hereinafter, a drainage member according to an embodiment of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the siphon drain member 2 (drainage member) by this Embodiment has a high drainage function, for example, the rain gutter 1 attached to the buildings of large facilities, such as a factory and a shopping center. Of these, it is provided inside a large eaves bowl 10 arranged at the eaves edge.

As shown in FIG. 1, the rain gutter 1 includes the eaves gutter 10 described above, and a gutter 11 connected to a circular through hole 10 b formed in the bottom surface 10 a of the eave gutter 10 via a call gutter 12. Have. The scallop 12 is used for horizontally guiding rain water W flowing down from the siphon drain member 2 provided on the eaves cage 10, and one end side thereof is connected to the lower surface 10 c of the eaves cage 10 via the heel joint 13 by the first elbow 12 </ b> A. The other end side is connected to the upper end of the flange 11 by the second elbow 12B. In such a gutter 1, the gutter 11 is arranged in the vertical direction along the outer wall P of the building, the lower end of the gutter 11 is connected to a drain pipe (not shown) buried in the ground, and the roof The rainwater flowing down from the eaves is received by the eaves basin 10 and overflowed to the upper side, and drained to the drainage pipe side through the basins 12 and 11.
Here, in FIG.1 and FIG.2, the paper right side is a building side. In the rain gutter 1, the building side is referred to as the rear side and the rear side, and the side away from the building is referred to as the front side and the front side.

The eaves 10 is an extruded product of hard vinyl chloride resin, synthetic resin such as ABS, AES, etc., and the front wall 15 is erected from the front end of the bottom wall 14 with a flat main body, and the rear end of the bottom wall 14 The rear wall 16 is formed in a groove-shaped cross section. The eaves cage 10 is suspended by a rain gutter suspension (not shown) attached to a nose cover plate (not shown) to receive rainwater flowing down from the eaves of the roof.
In order to prevent expansion and contraction due to heat, the eaves rod 10 preferably has a linear expansion coefficient of 2.0 × 10 ⁻⁵ / ° C. or less, and a PET resin sheet stretched in the center in the thickness direction of the eaves rod 10 The coefficient of linear expansion can be reduced by interpolating a low stretch sheet such as an iron sheet or by blending low stretch additives such as wollastonite and carbon fiber with the synthetic resin itself constituting the eaves bowl 10. it can. In addition, it is not restricted to a synthetic resin, A metal extrusion-molded product may be used.

A siphon drain member 2 shown in FIG. 2 is a drainage member having a high drainage function for improving drainage capacity of rainwater W (see FIG. 1) that has flowed into the eaves 10 during heavy rain. As shown in FIGS. 3 to 5, the siphon drain member 2 has a lid member 21 formed in a plate shape and a drop opening portion 20, and has a collar 11 (precisely, a call 12 on the collar 11. Are connected to the mounting cylinder 22, the lid member 21 and the mounting cylinder 22, and a plurality of vertical ribs 23 arranged at intervals in the circumferential direction at a position where the mounting cylinder 22 is dropped and does not overlap the opening 20 in a top view. And.
In the present embodiment, the siphon drain member 2 is an injection molded product of a synthetic resin such as hard vinyl chloride resin, polycarbonate, ABS, AES or the like. In addition, it is not restricted to a synthetic resin, It may be made of cast iron using a mold.

  Here, in the present embodiment, the lid member 21 is formed in a disc shape, and the mounting cylinder 22 is formed in a cylindrical shape, and these central axes are arranged on a common axis and coincide with the vertical direction. . Hereinafter, this common axis is referred to as a drain axis O, the mounting cylinder 22 side of the siphon drain member 2 along the drain axis O direction is referred to as a lower side, and the lid member 21 side is referred to as an upper side. In a plan view when the siphon drain member 2 is viewed from the drain axis O direction, a direction orthogonal to the drain axis O is referred to as a radial direction, and a direction around the drain axis O is referred to as a circumferential direction.

The mounting cylinder 22 includes a cylindrical portion 22A that forms the drop opening portion 20, and a plate-like flange portion 22B that extends radially outward from the upper end of the cylindrical portion 22A. Here, the opening outer diameter R1 of the dropping port portion 20 corresponds to the inner diameter of the cylindrical portion 22A, and the opening area A1 of the dropping port portion 20 is the diameter of the inner diameter of the cylindrical portion 22A (opening outer diameter R1 of the dropping port portion 20). It corresponds to the area. In this embodiment, the opening area A1 is set to 20 cm ² or more 300 cm ² or less, preferably 30 cm ² or more 190 cm ² or less, 40 cm ² or more 100 cm ² or less being more preferred.
In the present embodiment, since the drain axis O corresponding to the central axis of the siphon drain member 2 coincides with the vertical direction, the lid area A2 of the lid member 21 and the opening area A1 of the drop opening 20 are respectively This corresponds to the projected area of the lid member 21 on the surface orthogonal to the vertical direction and the projected area of the opening of the drop opening 20.

In the mounting cylinder 22, a connecting portion 22 a on the inner surface side where the cylindrical portion 22 </ b> A corresponding to the drop opening portion 20 and the flange portion 22 </ b> B are continuously provided has a bell mouth shape formed in a tapered surface or a curved surface. . When the inner surface side connection portion 22a is a curved surface, the curvature radius of the cross section in the direction parallel to the drain axis O is preferably 5 mm to 20 mm.
The cylindrical portion 22 </ b> A is penetrated from above through the through hole 10 b (see FIG. 5) of the eaves rod 10, and is arranged in a state of being inserted inside the rod joint 13.
In addition, the external thread which is not shown in figure may be formed in the outer peripheral surface of 22 A of cylinder parts. In this case, the mounting cylinder 22 can be mounted by rotating the mounting cylinder 22 and screwing the male screw of the cylinder portion 22 </ b> A into a female thread (not shown) formed on the inner surface of the flange joint 13.

The flange portion 22B is formed with a stepped portion 22b that is cut out thinly over the entire circumference on the lower surface on the outer peripheral side, and the stepped portion 22b is locked on the bottom wall 14 (bottom surface 10a) of the eaves rod 10. . In the present embodiment, the outer diameter dimensions of the flange portion 22B and the lid member 21 are substantially the same diameter.
And the part formed between the outer periphery 21a of the cover member 21 and the outer periphery 22c of the collar part 22B becomes the inflow opening 2A into which the rain water W collected on the eaves bowl 10 drops and flows into the opening of the mouth part 20 .
In addition, 2 A of inflow openings say between the outer periphery 21a of the cover member 21 and the bottom face 10a of the eaves bowl 10, or between the collar part 22B of the mounting cylinder 22 about the direction orthogonal to a horizontal surface. For example, when the outer peripheral edge 21a of the lid member 21 is larger than the outer peripheral edge 22c of the flange portion 22B of the mounting cylinder 22, the inflow opening 2A is formed between the outer peripheral edge 21a of the lid member 21 and the bottom surface 10a of the eaves bowl 10. When the outer peripheral edge 21a of the lid member 21 is smaller than the outer peripheral edge 22c of the flange 22B of the mounting cylinder 22, the inflow opening 2A is formed between the outer peripheral edge 21a of the lid member 21 and the upper surface 22d of the flange 22B of the mounting cylinder 22 It becomes a part formed between.
The size, height, and shape of the lid member 21 to be described later are adjusted so that the area of the inflow opening 2A is larger than the opening area A1 of the drop opening 20 described above. In the present embodiment, the area of the inflow opening 2A can be obtained by the product of the circumference of the circular lid member 21, that is, the length of the outer peripheral edge 21a, and the height H of the lid member 21 described later.

  As shown in FIG. 3, the plurality of vertical ribs 23 connect the upper surface 22 d of the flange portion 22 </ b> B of the mounting cylinder 22 and the outer peripheral portion of the lower surface 21 c of the lid member 21. That is, the lid member 21 is supported from below by a plurality of vertical ribs 23, 23,... And is held at a position where a predetermined height H is secured from the bottom surface 10 a of the eaves bowl 10. These vertical ribs 23 are provided in the inflow opening 2A, intersect with the radial direction in a plan view, and are curved. That is, the vertical rib 23 has a function of rectifying the rainwater W dropped from the inflow opening 2 </ b> A and flowing into the mouth portion 20.

  As described above, the lid member 21 is supported by the mounting cylinder 22 in a state of being supported from below by the plurality of vertical ribs 23, 23,. The lid member 21 is disposed inside the eaves bowl 10 as described above, is installed at a position spaced upward from the drop opening 20, and is dropped on the bottom surface 10 a of the eaves bowl 10 below the lid member 21. An inflow opening 2 </ b> A through which rainwater W flows into the mouth portion 20 is formed.

The lid member 21 is disposed so as to close the opening of the drop opening 20 as viewed from above in the vertical direction, and the lid area A2 shown in FIG. 6 is larger than the opening area A1 of the drop opening 20 (see FIG. 3). Is set.
In the present embodiment, the center of the lid member 21 and the center of the opening of the drop opening 20 coincide with each other in the vertical direction, but the eaves bowl 10 itself is inclined so that the lid member 21 and the drop opening 20 are both inclined. In this case, if the lid area A2 is the same as the opening area A1 of the drop opening portion 20, the opening of the drop opening portion 20 cannot be closed when viewed from the vertical direction, and the lid member 21 and the drop opening portion are not closed. A gap (air core by eddy current) in which air enters between 20 is generated. Therefore, it is preferable that the lid member 21 is set so that the projected area of the lid member 21 with respect to the plane orthogonal to the vertical direction is larger than the projected area of the opening of the mouth portion 20.

The lid member 21 is set at a position of 10 to 50 mm at a height H directed upward from the bottom surface 10a of the eaves bowl 10. The lid member 21 preferably has a lid diameter R2 that is larger than the opening outer diameter R1 of the opening 20 and is set to 245% or less of the opening outer diameter R1. This is because when the opening outer diameter R1 is 75 mm and the lid diameter R2 is 185 mm or less (that is, 185 mm / 75 mm≈245%), a good water level can be maintained in the eaves bowl 10. Note that when the lid diameter R2 of the lid member 21 drops and exceeds 245% of the opening outer diameter R1 of the mouth portion 20, a phenomenon in which much rainwater entering the inflow opening collides with the lid member and the water level rises. It will occur.
For example, as the lid diameter R2 of the lid member 21, for example, when the opening outer diameter R1 of the drop opening 20 is 75 mm, the lid diameter can be greater than 75 mm and 185 mm or less.
In addition, even if the lid member 21 is inclined and the height is not constant, the height H may be in the range of 10 to 50 mm.

Further, the height H of the lid member 21 is set at a position of 30 to 40 mm upward from the bottom surface 10a of the eaves bowl 10, and the lid diameter R2 is set to 150 to 200% of the opening outer diameter R1 of the mouth portion 20. More preferably.
When the lid diameter R2 is dropped and smaller than 150% of the opening outer diameter R1 of the mouth portion 20, the water level in the eaves bowl 10 becomes lower than the lid member 21, and the lid member 21 may not come into contact with the inflowing water. is there. Moreover, when it exceeds 200%, the rate at which the water flow flowing in from the inflow opening collides with the lid member 21 increases, and the water level in the eaves bowl 10 becomes excessively higher than the lid member 21, which may reduce siphon performance. There is sex.
And by setting it as 150% or more, even if it is a case where the eaves bowl 10 whole is inclined ahead or back, the opening of the mouth part 20 can be closed reliably. By setting it to 200% or less, the fit is reduced, and an increase in size of the joint and the support can be prevented.

Since the water level in the eaves bowl 10 needs to be higher than the inflow opening 2 </ b> A for the siphon action to occur, the height H of the lid member 21 needs to be lower than the maximum water level in the eaves bowl 10. In order to generate a stable siphon action, the height H of the lid member 21 is preferably 0.1 to 0.5 times the maximum water level in the eaves bowl 10, and is preferably 0.2 to 0.45. More preferably double the height.
It should be noted that the maximum water level in the eaves bowl 10 refers to the lower one of the front wall 15 or the rear wall 16 of the eave bowl from the bottom surface 14. Further, when the height is not constant because the lid member 21 is inclined, the maximum height of the height H of the lid member 21 is 0.1 to 0.5 times the maximum water level in the eaves bowl 10. It is sufficient if the height is set.

  Moreover, as for the opening outer diameter R1 of the suitable drop opening part 20 for providing the cover member 21 set to the above positions, 50 mm or more and 170 mm or less are preferable. That is, by setting the opening outer diameter R1 of the drop port 20 to the lower limit of 50 mm or more, a large flow rate of drainage generated at the siphon generator (siphon drain member 2) can be drained smoothly. And by setting it as 170 mm or less of an upper limit, an accommodation becomes small and the enlargement of a coupling or a support can be prevented.

  Further, as shown in FIGS. 3 and 6, the lid member 21 is provided with gripping ribs 24 that protrude upward from the upper surface 21 b and are arranged at intervals in the circumferential direction. By grasping the grip rib 24, the rotation operation when the siphon drain member 2 is tightened can be easily performed. The grip rib 24 includes a rib main body 24A extending in the circumferential direction and an extending portion 24B protruding from both ends of the rib main body 24A toward the outer peripheral side. For example, when the siphon drain member 2 is attached to the flange joint 13, for example, a rod-shaped member is engaged between the gripping ribs 24, 24 adjacent to each other in the circumferential direction, and the rod-shaped member is rotated, thereby tightening. Can be included. Moreover, since the clearance gap is formed between the holding ribs 24 and 24, it becomes easy to pass garbage, such as a fallen leaf in the eaves rod 10, and can prevent getting entangled.

  Further, as shown in FIGS. 3 to 5, the lid member 21 has a plurality of guide guides 25 having a curve gradually extending downward toward the drain axis O (center of the lid) at the central portion of the lower surface 21c in plan view. Radially extending from the axis O in the radial direction. The guidance guide 25 is for guiding the rainwater W in the eaves cage 10 from the inflow opening 2A to the mouth (opening of the mouth part 20).

Next, the procedure for assembling the rain gutter 1 (the eaves gutter 10, the gutter 11, and the siphon drain member 2) having the siphon drain member 2 described above will be specifically described.
First, as shown in FIG. 5, a through hole 10 b is opened at a position where the siphon drain member 2 is attached to the bottom wall 14 of the eaves bowl 10. Subsequently, the siphon drain member 2 is made to enter the eaves rod 10, the cylindrical portion 22 </ b> A of the mounting cylinder 22 is inserted from the through hole 10 b of the eaves rod 10 and protruded downward, and the step portion of the flange portion 22 </ b> B of the mounting cylinder 22 is inserted. 22b is locked and fixed to the periphery of the through hole 10b on the bottom surface 10a of the eaves rod 10 with packing or the like interposed therebetween. As a result, as shown in FIG. 4, the siphon drain member 2 is disposed at a predetermined position in the eaves cage 10, and the lid member 21 is also held at a position at a predetermined height H with respect to the opening 20. Fixed.

  Subsequently, after connecting the flange joint 13 to the cylindrical portion 22A protruding downward from the through hole 10b of the eaves rod 10, the first elbow 12A and the second elbow 12B are connected as shown in FIG. Using the attached hook 12, the hook 11 is then connected to the second elbow 12 B at one end of the call 12. The troughs 11 are connected by using an appropriate number of joints according to the distance to the drain pipe buried in the basement described above.

  In the rain gutter 1 assembled in this way, the rain that has fallen on the roof flows into the siphon drain member 2 provided in the eaves gutter 10 from the inflow opening 2A and flows through the call gutter 12 through the drop opening 20. It flows down to 竪 樋 11. And the rainwater W which flowed into the ridge 11 from the call basin 12 flows down to a drain pipe (not shown) buried in the ground. At this time, since the downstream side of the siphon drain member 2 of the trough 11 is water-sealed in a full state, the inside of the trough 11 will flow down with a full water state, and will be referred to as the drop opening 20 and the scissors 12 and 12 A siphon phenomenon occurs in the tub 11 and the water is drained vigorously from the tub 11 to the drain pipe side.

  As described above, as a procedure for assembling the gutter 1 according to the present embodiment, the siphon drain member 2 is fixed at a predetermined position of the eaves cage 10 in advance, and then the callers 12 and 11 are provided. Is an example, for example, after assembling the coffin 11 and the coffin 12 in advance, and then assembling by other procedures such as a procedure of attaching the siphon drain member 2 to the coffin joint 13 connected to the coffin 12 It is also possible.

Next, the effect | action of the siphon drain member 2 mentioned above is demonstrated in detail using drawing.
In the present embodiment, as shown in FIG. 3, the opening of the drop opening 20 is closed as viewed from above in the vertical direction, and as shown in FIG. By setting the position of the lid member 21 of the siphon drain member 2 so as to be a height of ˜50 mm, even when a large amount of rainwater flows from the inflow opening during heavy rain, the bag 11 is in a full state without sucking air. It becomes water sealed. Therefore, a siphon phenomenon can be generated in the ridge 11, and clogging of foreign matters such as fallen leaves can be prevented, so that excellent siphon performance can be obtained.

That is, when the height H of the lid member 21 from the bottom surface 10a of the eaves bowl 10 is smaller than 10 mm, foreign matters such as fallen leaves are easily clogged in the inflow opening 2A as shown in FIG. Since the area of the inflow opening 2A becomes small, a desired drainage flow rate cannot be ensured. Moreover, as shown in FIG.7 (b), when the height H from the bottom face 10a of the eaves bowl 10 of the cover member 21 exceeds 50 mm, the water level of the rainwater W required for generation | occurrence | production of siphon will go up too much. Since it becomes easy to inhale air, siphon is less likely to be generated, and drainage performance is reduced. Therefore, the height of the lid member 21 as described above is preferably in the range of 10 to 50 mm, and more preferably in the range of 30 to 40 mm.
Here, the relationship between the height H of the lid member 21 and the diameter of the drop opening 20 (opening outer diameter R1) is preferably R1 / H = 1.0 to 16.0, more preferably 1.3. It is -8.0, Most preferably, it is 1.5-5.5. A siphon can be reliably generated by setting it as such a range.

Further, in the present embodiment, as shown in FIG. 3, the lid member 21 having a lid area A2 (see FIG. 6) larger than the opening area A1 of the drop opening 20 is provided with a predetermined height from the bottom surface 10a of the eaves bowl 10. The position is set to the position H. Therefore, it becomes the operation | work which attaches the cover member 21 from the upper side of the eaves rod 10, the work in the lower surface 10c (refer FIG. 1) side of the eaves rod 10 can be reduced, and the effort and time concerning attachment and removal of the cover member 21 are reduced. Can be reduced.
Moreover, since the siphon performance can be adjusted by changing the height H from the bottom surface 10a of the lid member 21 according to the shape (bottom width) of the eaves bowl 10 and the opening area A1 of the drop opening 20, the lid member 21 Variations can be reduced and costs can be reduced.

  Further, the lid diameter R2 of the lid member 21 is larger than the opening outer diameter R1 of the drop opening 20 and 245% or less of the opening outer diameter R1 as in the present embodiment, so that the lid member 21 Since the water flow of the rainwater W flowing in from the inflow opening 2A formed on the lower surface 21c side becomes a more stable state, the water level in the eaves wall 10 is also stabilized, and siphon can be generated reliably, thereby improving drainage performance. be able to. In particular, when the lid diameter R2 or the minimum width dimension of the lid member 21 falls and exceeds 245% of the opening outer diameter R1 of the mouth portion 20, most of the rainwater W that is about to flow into the inflow opening 2A collides with the lid member 21. The phenomenon that the water level rises will occur. Therefore, it is preferable that the lid diameter R2 of the lid member 21 as described above is larger than the opening outer diameter R1 of the opening 20 and not more than 245% of the opening outer diameter R1.

  Further, in the siphon drain member 2 of the present embodiment, the inflow formed on the lower surface 21c side of the lid member 21 by setting the height H of the lid member 21 to a range of 30 to 40 mm upward from the bottom surface 10a. Since the water flow of the rainwater W flowing from the opening 2A becomes more stable, the water level in the eaves wall 10 is also stabilized, and siphons can be generated reliably, so that the drainage performance can be enhanced.

  Further, in the siphon drain member 2 of the present embodiment, the lid diameter R2 of the lid member 21 is dropped to be in the range of 150 to 200% of the opening outer diameter R1 of the mouth portion 20, thereby bringing the lid member 21 into the lower surface 21c side. Since the water flow of the rainwater W flowing from the formed inflow opening 2A becomes more stable, the water level in the eaves wall 10 is also stabilized, and siphons can be generated reliably, so that the drainage performance can be enhanced.

  Further, in the siphon drain member 2 of the present embodiment, the mounting cylinder 22 in which the lid member 21 is integrally provided via the vertical rib 23 is fitted to the flange joint 13 provided on the flange 11. Thus, the lid member 21 can be disposed at a predetermined position. And inflow opening 2A of a suitable magnitude | size is formed between the lower surface 21c side of the cover member 21 and the bottom face 10a of the eaves bowl 10, and the attachment operation | work of the siphon drain member 2 can be performed easily. Moreover, in the siphon drain member 2 of the present embodiment, the longitudinal ribs 23 are provided in the inflow opening 2A portion for dropping the rainwater W and flowing into the mouth, so that the longitudinal ribs 23 can have a rectifying effect. It is possible to more reliably suppress the rainwater W from sucking air.

  Further, in the present embodiment, the rainwater W flowing in from the inflow opening 2A is guided by the curved portion of the guide guide 25 and guided toward the opening of the drop opening portion 20, so that the rainwater W sucks air. It can suppress more reliably.

  As described above, according to the present embodiment, it is possible to exhibit excellent siphon performance with a simple structure with reduced cost and excellent workability.

  Next, examples carried out to support the effect of the drainage member according to the above-described embodiment will be described below.

(First embodiment)
The first example uses the lid member 21 corresponding to the lid member 21 of the above-described embodiment, and changes the height of the lid member 21 from the bottom surface 31a of the eaves bowl 31 and the diameter of the lid member 21. An experiment that generated a siphon was performed to confirm the drainage condition.

FIG. 8 shows an experimental apparatus used in the first embodiment. The lid member 30 is a disc-shaped member, and is suspended and supported so that the height can be changed by using a bolt member 33 supported downward from a hanging tool 32 fixed to the ear portion 31b of the eaves bowl 31. ing. In other words, the height of the lid member 30 suspended and supported by the hanging tool 32 from the bottom surface 31a of the eaves rod 31 can be changed, and the experiment was performed by changing the height to the following five levels. Similarly to the above-described embodiment, the lid member 30 is disposed so as to close the opening of the drop opening portion 34 inside the flange joint 36 in the top view in all the following eight cases of experiments. The lid area was dropped and larger than the opening area of the mouth portion 34 (set to 75 mm). In FIG. 8, a hook is connected to the downstream side of the elbow 35.
Table 1 shows experimental conditions and experimental results in the first embodiment.

As shown in Table 1, the experiment conducted 8 cases (cases 1 to 8) in which the bottom width (mm) of the eaves bowl 31 and the lid diameter (mm) of the lid member 30 were changed. Specifically, three types of eaves bowls 31 having a bottom width of 120 mm, 150 mm, and 200 mm are used, and two cases having a bottom width of 120 mm and a lid diameter of 80 mm and 95 mm, a bottom width of 150 mm and a lid diameter of 110 mm, Two cases of 125 mm and four cases with a bottom width of 200 mm and lid diameters of 140 mm, 155 mm, 170 mm, and 180 mm were used.
In the experiment in the above eight cases, the height H of the lid member 30 from the bottom surface 31a of the eaves bowl 31 is changed in five steps of 10 mm, 20 mm, 30 mm, 40 mm, and 50 mm, and the flow rate is 6 liter / The water level was measured at 150 mm in the direction of extension of the eaves bowl 31 from the center of the opening of the eaves 31, and the state of the siphon phenomenon was visually confirmed in each experiment. did.

  As shown in Table 1, as a result of the experiment, it was confirmed that the siphon phenomenon occurred in all of the cases 1 to 8 where the height H of the lid member 30 was changed (position of the height of 10 to 50 mm). . In other words, it was confirmed that the lid diameter of the lid member 30 at this time was larger than the opening outer diameter (75 mm) of the drop opening 34 and 185 mm or less (245% or less of the opening outer diameter).

In Table 1, in the range surrounded by the dotted line, it was confirmed that the water level was kept low because the balance between the height of the lid member 30 and the lid diameter was good. In particular, in the range surrounded by a thick line, as shown in FIG. 7A, the water level flowing into the inflow opening, the height of the lid member 30, and the lid diameter are well balanced, so that the water level is kept low, and a good siphon It was confirmed that this was a phenomenon.
On the other hand, when the height of the lid member 30 is large (when it exceeds 40 mm in this experiment) and the lid diameter is small (when it is smaller than 95 mm in this experiment), as shown in FIG. It was confirmed that the water level in the inside was lower than that of the lid member 30 and the siphon action was unlikely to occur.
Further, when the height of the lid member 30 is small (when smaller than 30 mm in this experiment) and the lid diameter is large (when larger than 155 mm in this experiment), as shown in FIG. It has been confirmed that the rate at which the inflowing water stream collides with the lid member 30 increases and the water flow is disturbed to reduce the siphon performance, and the flow rate may be reduced because the opening area is small.

  As described above, it was found that the siphon phenomenon starts earlier as the lid member 30 has a lower height H from the bottom surface 31a and a larger lid diameter. Preferably, as shown in the preferred range surrounded by the dotted line in Table 1, the height H of the lid member 30 is 20 to 50 mm, and the lid diameter of the lid member 30 is in the range of 95 to 185 mm. It was confirmed that it was 120 to 250% (95/75 to 185/75) of the opening outer diameter of the mouth 34. More preferably, as shown in the most preferable range surrounded by a thick line in Table 1, the height H of the lid member 30 is 30 to 40 mm, and the lid diameter of the lid member 30 is in the range of 110 to 155 mm. It was confirmed that it was 150 to 200% (110/75 to 155/75) of the opening outer diameter of the mouth 34.

(Second embodiment)
In the second example, the superiority of the shape of the siphon drain member 2 according to the embodiment described above was confirmed by experiments.
That is, in the second embodiment, as shown in Table 2, there are 15 types of drainage member cases (A, B, C, D, E, G, H, T, V, F, S, W, X, existing) using an eaves with a bottom width of 150 mm, flowing water at a flow rate of 4 liters / sec, 5 liters / sec, and 6 liters / sec (corresponding to 100 mm / h of rainfall) to the eaves The water level was measured at a position 150 mm from the center of the opening of the eaves in the extending direction of the eaves, and in each case, evaluation items such as siphon phenomenon, drainage performance, noise, ease of molding and assembly were confirmed and evaluated.

The structure and shape of the drainage member in each case are as shown in Table 2. Specifically, each drainage member has a lid diameter (mm), the height of the lid member from the bottom of the eaves (mm), the number of ribs of the vertical ribs (sheets), the rib width of the vertical ribs (mm), the mounting cylinder The curvature radius (mm) of the connecting portion and the shape of the guide are changed. The rib width is a width in a direction from the center of the lid member toward the outer periphery.
In Table 2, the guide having a conical shape is “R”, the radial guide as in the above-described embodiment is “radial”, and the guide without the guide is “none”. Here, the shape of the case G corresponds to the siphon drain member 2 of the above-described embodiment.

FIG. 9 shows the experimental results of the second embodiment and shows the water level (mm) of each case.
As a result of the experiment shown in FIG. 9, it was confirmed that the drainage members of cases C, D, E, G, H, and T were stable in terms of water level, siphon phenomenon, and drainage performance. On the other hand, in the case of cases A, B, V, F, S, W, X and existing drainage members, the water level exceeded 40 mm and was in an unstable state. Furthermore, it has confirmed that the drainage member of case G was comprehensively excellent in the evaluation item mentioned above.

  Further, from these results, the lid diameter is preferably 130 mm and the height of the lid member from the bottom surface of the eaves is preferably 35 mm as a point that can be confirmed for each configuration of the drainage member. Regarding the number of vertical ribs, 6 is preferable, 4 (case A) is slightly worse, and 8 (case E) is slightly better. The rib width is preferably 25 mm, and when it is as large as 55 mm as in case B, the water level was high. The radius of curvature of the connecting portion of the mounting cylinder is preferably 15 mm. Further, it has been confirmed that a radial guide like the case G is advantageous for quiet noise, vortex prevention and water pool prevention as the shape of the guide.

  As mentioned above, although embodiment of the drainage member by this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably.

For example, as in the first modification shown in FIGS. 10 to 12, the siphon drain member 2 is provided on the bottom surface 10 a of the funnel 10 </ b> A that connects the ends of the eaves 10 and 10 extending in the extending direction in abutment with each other. It is also possible to have a configured configuration. The funnel 10A includes a bottom wall 14A, a front wall 15A, and a bottom wall 14A, a front wall 15A, and a rear wall 16 connected to the bottom wall 14, the front wall 15, and the rear wall 16 of FIG. A rear wall 16A is provided, and a through hole 10b (see FIG. 12) is formed in the bottom wall 14A.
Also in this case, the siphon drain member 2 enters the funnel 10A, the cylindrical portion 22A of the mounting cylinder 22 is inserted from the through hole 10b of the funnel 10A and protrudes downward, and the step portion of the flange portion 22B of the mounting cylinder 22 is inserted. 22b is locked and fixed to the periphery of the through hole 10b on the bottom surface 10a of the funnel 10A with packing or the like interposed therebetween. As a result, the siphon drain member 2 is disposed at a predetermined position in the funnel 10A, and the lid member 21 shown in FIG. 11 is also fixed to the drop opening 20 while being held at a predetermined height.

Moreover, in embodiment mentioned above, it is the structure which attaches the siphon drain member 2 by making the mounting | wearing cylinder 22 fit to the through-hole 10b formed in the bottom face 10a of the eaves bowl 10, Comprising: Thereby, the siphon drain member 2 of this is attached. Although the position of the lid member 21 (height H from the bottom surface 10a) is determined, the present invention is not limited to the installation type with respect to the bottom surface 10a. That is, the lid member is not limited to the drainage member that is integrally combined with the mounting cylinder 22 and the vertical rib 23 as in the siphon drain member 2 described above, and only the plate-like lid member is the eaves. The structure arrange | positioned in the height spaced apart from the bottom face 10a inside 10 may be sufficient.
In short, the lid member is installed inside the eaves, at a position spaced upward from the bottom surface, and is arranged so as to close the opening of the drop opening when viewed from above in the vertical direction. It is only necessary to be set larger than the area and to be provided at a height of 10 to 50 mm above the bottom surface, and there is no particular limitation on the mounting structure of the lid member.

  For example, a suspended lid member 40 (drainage member) according to the second modification shown in FIGS. 14 to 16 may be employed. The lid member 40 is formed of a rectangular plate member in plan view, and is disposed inside the eaves bowl 10, and the mounting cylinder 22 (see FIG. 5) of the above-described embodiment is separated. The lid member 40 has side wall portions 41, 41 extending upward from both ends in the width direction of the eaves rod 10, and the upper end of each side wall portion 41 is hooked on the ear portion 17 of the eaves rod 10 from above. Thus, a locking portion 41a to be locked is provided.

The cover member 40 is installed at a position spaced upward from the bottom surface 10a of the eaves bowl 10 as shown in FIG. 15 in a state where the locking part 41a is locked and fixed to the ear part 17 of the eaves bowl 10. The Then, an inflow opening 2A is formed on the lower surface 40b side of the lid member 40 between the bottom surface 10a and the rainwater in the eaves bowl 10 is dropped into the mouth. The lid member 40 according to this modification is also disposed so as to close the drop opening 20 shown in FIG. 11 of the mounting cylinder 22 when viewed from above in the vertical direction, and the lid area A2 is larger than the opening area A1 of the drop opening 20. It is set and is provided at a height of 10 to 50 mm upward from the bottom surface 10a.
In addition, a plurality of vertical ribs 42 are provided radially on the lower surface 40 b of the lid member 40 in a region that does not overlap the opening of the drop opening 20 when viewed from above in the vertical direction.

In addition, the shape of the lid member in plan view is circular in the above-described embodiment, but is not particularly limited to being circular, and may be a quadrangle (rectangle) as in the above modification. In short, the shape may be any shape as long as it is arranged so as to close the opening of the drop opening when viewed from above in the vertical direction.
For example, in the case of a rectangular lid member, the minimum width dimension of the rectangle is set to be larger than the opening outer diameter of the opening and not more than 245% of the opening outer diameter.

  Further, in the present embodiment, the guide guide 25 is provided on the lower surface 21c of the lid member 21, and the grip rib 24 is provided on the upper surface 21b. However, the guide guide 25 and the grip rib 24 may be omitted. It is possible and it is not limited to the shape as in the present embodiment. Further, the shape and quantity of the vertical ribs 23 are not limited to the present embodiment. For example, the vertical ribs 23 are eliminated and the lid member 30 is suspended and supported from the hanging tool 32 as in the experimental apparatus shown in FIG. Also good.

  For example, as in the third modification shown in FIGS. 17 and 18, the siphon drain member 2 may be a member composed of the lid member 21, the mounting cylinder 22, and the vertical ribs 23 as separate members. . In this case, the vertical rib 23 is fixed to the mounting cylinder 22, and the lid member 21 can be assembled coaxially with the disc-shaped support plate 23 a fixed to the upper end of the vertical rib 23. Has been. Specifically, a through hole 23b is formed in the central portion of the support plate 23a of the vertical rib 23, and a locking projection (not shown) formed on the lower surface of the lid member 21 is inserted into the through hole 23b. Can be assembled by engaging.

  Further, as in the fourth modified example shown in FIG. 19, the lid part 21 is made horizontal while the drop part 20 is tilted, and the projection area Aa of the drop part 20 onto the horizontal plane T is equal to the horizontal plane T of the lid member 21. You may make it become larger than the projection area Ab. In this case, the lid diameter R2 may be the same as the opening outer diameter R1 of the drop opening 20.

  In the present embodiment, the upper surface 21b of the lid member 21 is a flat surface. However, for example, the lid member 21 may be formed in a gentle spherical surface with a central portion protruding upward in a plan view. In this case, it is possible to prevent water and foreign matter from collecting on the upper surface 21b of the lid member 21.

  Further, the shapes of the eaves cage 10, the cage 11, and the caller 12, etc., the configurations of the dimensions, materials, and the like are not limited to the above-described embodiments, and can be set within an appropriate range. For example, the call 12 is disposed horizontally, but may be inclined obliquely downward.

For example, a drainage member made of the lid member of the present invention can also be adopted for funnels (eaves) different from the above-described embodiments such as the modified examples shown in FIGS.
That is, the first funnel 10B of the fifth modification shown in FIG. 20 is of a Western style funnel having a first recess 10d that is recessed below the bottom surface 10a. In this case, the lid member 50 is provided at a position immediately above the flange 11 and at a height H of 10 to 50 mm upward from the bottom surface 10a where the first recess 10d is not formed.

  A second funnel 10C of the sixth modification shown in FIG. 21 is of an eaves cheese type in which a second recess 10e is formed which is recessed below the bottom surface 10a and has a depth smaller than that of the first recess 10d described above. In this case, the lid member 50 is provided at a position immediately above the flange 11 and at a height H of 10 to 50 mm above the bottom surface 10a where the second recess 10e is not formed.

  A third funnel 10D of the seventh modification shown in FIG. 22 is formed with a third recess 10f that is recessed below the bottom surface 10a and is deeper than the first recess 10d described above. The lid member 50 in this case is also provided at a position of a height H of 10 to 50 mm above the bottom surface 10a where the third recess 10f is not formed, at a position immediately above the flange 11.

  In addition, the constituent elements in the above-described embodiments can be appropriately replaced with known constituent elements without departing from the gist of the present invention.

1 Gutter 2 Siphon drain member (drainage member)
2A Inflow opening 10 Eaves 10A, 10B, 10C, 10D Funnel 10a Bottom 10b Through hole 11 竪 樋 12 Nominal 20 Drop port 21 Lid member 22 Mounted cylinder 23 Vertical rib 24 Grasping rib 25 Guide guide 40 Lid member O Drain shaft R1 Opening outside diameter of the drop opening R2 Lid diameter A1 Opening area of the drop opening A2 Lid area W Rainwater

Claims (5)

A drainage member for generating a siphon action provided in a rain gutter provided with an eaves eave and a eaves connected to a drop opening portion having a cylindrical portion penetrating a through hole formed on the bottom side of the eave eave There,
Inside the eaves, is installed at a position spaced upward from the bottom surface, and has a lid member that forms an inflow opening that allows rainwater in the eaves to drop and flow into the mouth between the bottom surface,
The lid member is disposed so as to close the opening of the drop opening when viewed from above in the vertical direction, and a projected area of the lid member with respect to a plane orthogonal to the vertical direction is larger than a projected area of the opening of the drop opening. Set ,
The lid diameter or minimum width dimension of the lid member is larger than the outer diameter of the opening, which is the inner diameter of the cylindrical portion of the drop opening, and is 245% or less of the outer diameter of the opening, and
When the height of the lid member is H and the opening outer diameter of the drop opening is R1, the value of R1 / H satisfies the range of 1.3 to 8.0, and the value of H is 10 to 10. Meet the 50mm range,
The drainage member, wherein an opening area of the drop opening is 30 cm ² or more and 190 cm ² or less . The eaves wall includes a bottom wall, a front wall erected from a front end of the bottom wall, and a rear wall erected from a rear end of the bottom wall, and the width of the bottom wall is 120 mm or more and 200 mm. The drainage member according to claim 1, wherein: The drop opening has a plate-shaped flange extending radially outward from the upper end of the cylindrical portion,
The drainage member according to claim 1 or 2 , wherein a connecting portion on an inner surface side where the cylindrical portion and the flange portion are continuously provided has a bell mouth shape formed in a tapered surface or a curved surface. . The lid member formed in a plate shape;
A mounting cylinder having the drop opening portion and fitted into the flange;
Connecting the lid member and the mounting cylinder, vertical ribs arranged at intervals in the circumferential direction at a position that does not overlap the opening of the drop opening portion when viewed from above in the vertical direction;
With
The drainage member according to any one of claims 1 to 3 , wherein the inflow opening is formed between the lid member and the mounting cylinder. On the lower surface of the lid member, a guide guide is formed in which a curved portion is formed extending gradually downward toward the lid center in plan view.
The guide information is in any one of claims 1 to 4, characterized in that said rainwater that has flowed from the inlet opening is guided by the curved portion is provided to direct toward the chute The drainage member as described.

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