JP2023111534A - Drain for eaves gutter and eaves gutter structure - Google Patents

Abstract

To provide a drain for an eaves gutter allowing a removal work of an upper member and a lower member from the eaves gutter to be performed easily even when an adhesive agent is provided between a flange lower surface of the upper member and the eaves gutter.SOLUTION: A drain 10 for an eaves gutter is installed at an opening formed at the eaves gutter. The drain 10 for the eaves gutter includes an upper member 11 and a lower member 90. The upper member 11 has an upper flange 16 installed on an upper surface of a bottom plate of the eaves gutter, an upper cylindrical part 11a provided below the upper flange 16 and an upper curved surface part 14 connecting the upper flange 16 and an upper cylindrical part 11a. A male screw 13 to be screwed to the lower member 90 is formed on an outer peripheral surface of the upper cylindrical part 11a. The outer peripheral surface of the upper curved surface part 14 has a projection strip part 15.SELECTED DRAWING: Figure 17

Description

The present disclosure relates to eaves gutter drains and eaves gutter structures.

2. Description of the Related Art Conventionally, it has been practiced to collect rainwater that has flowed down an eaves gutter attached to the roof of a building, send it to a downspout, and discharge it from below through the downspout. At this time, a drain is installed in the opening of the eaves gutter and the downspout is connected to the eaves gutter via the drain.

Patent Document 1 describes that the eaves gutter drain includes an upper member and a lower member, and the drain is coupled to the eaves gutter by screwing the upper member and the lower member together with the bottom plate of the eaves gutter sandwiched therebetween. It is In Patent Documents 1 and 2, a cylindrical portion is provided below the flange of the upper member, and the cylindrical portions are connected by a curved surface portion. A cross-sectional shape of the outer peripheral surface of the curved surface portion cut by a plane including the central axis is formed only by a substantially arc-shaped smooth curve.

JP 2021-70957 A JP 2019-132061 A

Conventionally, when the flange of the upper member is installed in the eaves gutter, an adhesive is usually applied to the lower surface of the flange of the upper member. The purpose of applying the adhesive is to firmly fix the flange of the upper member to the eaves gutter and to secure a water seal that prevents water from leaking from between the flange of the upper member and the eaves gutter. . However, if a large amount of adhesive is applied to the lower surface of the flange of the upper member in order to ensure water sealing, the adhesive overflows to the curved surface from between the lower surface of the flange of the upper member and the upper surface of the bottom plate of the eaves gutter. There is a problem in that the adhesive comes out, travels along the curved surface, and further reaches the male screw provided on the outer peripheral surface of the cylindrical portion. If the adhesive reaches the male threads, it will be difficult to remove the upper and lower members from the eaves gutter, for example, should the drain ever need to be reattached.

An object of the present disclosure is to provide an eaves gutter drain and an eaves gutter structure that facilitates the work of removing the upper member and the lower member from the eaves gutter even when an adhesive is provided between the lower surface of the flange of the upper member and the eaves gutter. is to provide

An eaves gutter drain according to one aspect of the present disclosure is an eaves gutter drain installed in an opening formed in an eaves gutter, and includes an upper member and a lower member, the upper member being a bottom plate of the eaves gutter. It has an upper flange installed on the upper surface, an upper tubular portion provided below the upper flange, and an upper curved surface portion connecting the upper flange and the upper tubular portion. The eaves gutter drain is formed with a male thread for screwing with the upper curved surface portion, and the outer peripheral surface of the upper curved surface portion has a ridge portion.

An eaves gutter structure of one aspect of the present disclosure is an eaves gutter structure including an eaves gutter and an eaves gutter drain of one aspect of the present disclosure installed in the eaves gutter.

According to the eaves gutter drain and the eaves gutter structure of one aspect of the present disclosure, even when the adhesive is provided between the lower surface of the upper flange of the upper member and the eaves gutter, the adhesive from the upper flange side to the inner peripheral side Since the flow of the adhesive can be suppressed by the ridges, it is possible to suppress the adhesive from reaching the male screw. This facilitates the work of removing the upper member and the lower member from the eaves gutter.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the cross section of schematic structure of the eaves gutter drainage structure containing the eaves gutter drain of embodiment. FIG. 2 is an enlarged view corresponding to part A of FIG. 1 showing the eaves gutter drain of the embodiment; FIG. 3 is a front view of an upper member of the eaves gutter drain shown in FIG. 2 ; FIG. 3B is an enlarged view of a portion B in FIG. 3A; FIG. 3B is an oblique top view of the upper member shown in FIG. 3A; 3B is a right side view of the upper member shown in FIG. 3A; FIG. 3B is a rear view of the upper member shown in FIG. 3A; FIG. 3B is a top view of the upper member shown in FIG. 3A; FIG. 3B is a bottom view of the upper member shown in FIG. 3A; FIG. FIG. 3B is a diagram of the upper member shown in FIG. 3A as viewed obliquely from below; FIG. 8 is a cross-sectional view taken along the line AA of FIG. 7; FIG. 3 is a diagram of the eaves gutter drain of the embodiment, which is a combination of the upper member and the lower member, and is viewed obliquely from above. It is the figure which combined the upper member and the lower member, and looked at the front. It is the figure which combined the upper member and the lower member, and looked at the right side. It is the figure which looked at the back surface by combining the upper member and the lower member. It is the figure which looked at the upper surface by combining the upper member and the lower member. It is the figure which looked at the lower surface by combining the upper member and the lower member. FIG. 16 is a cross-sectional view taken along the line BB of FIG. 15; FIG. 16 is a view corresponding to the CC cross section of FIG. 15, showing the state of use of the eaves gutter drain of the embodiment;

Hereinafter, embodiments of the eaves gutter drain according to the present disclosure will be described with reference to the drawings. The shapes, numbers, materials, etc. described below are examples for explanation, and can be appropriately changed according to the specifications of the eaves gutter drain or the eaves gutter drainage structure including the eaves gutter drain. In the following description, the same reference numerals are assigned to the same elements in all the drawings.

Embodiments will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a schematic configuration of an eaves gutter drainage structure 80 including an eaves gutter drain 10 according to an embodiment. FIG. 2 is an enlarged view corresponding to the portion A in FIG. 1 showing the eaves gutter drain 10. As shown in FIG.

As shown in FIG. 1, the eaves gutter drainage structure 80 includes an eaves gutter structure 70, a call gutter 94 and a downspout 96 and is attached to a building (not shown). In FIG. 1, the side away from the building (left side in FIG. 1) is the front side, and the side closer to the building (right side in FIG. 1) is the left side.

The eaves gutter structure 70 includes an eaves gutter 81 and an eaves gutter drain 10 installed in the eaves gutter 81.例文帳に追加The eaves gutter 81 is a molded resin product, and has a bottom plate 82, a front wall 83 standing from the front end of the bottom plate 82, and a rear wall 84 standing from the rear end of the bottom plate 82, and has a groove-shaped cross section. It is formed. The eaves gutter 81 is suspended by a hanging tool (not shown) attached to the building and is formed to receive rainwater running down from the eaves of the roof.

The bottom plate 82 of the eaves gutter 81 is formed with an opening 82a (FIG. 2). The eaves gutter drain 10 includes an upper member 11 and a lower member 90 . The upper member 11 is installed so as to pass through the opening 82a. The eaves gutter drain 10 is hereinafter referred to as the drain 10 . The structure of drain 10 will be described later in detail.

An upstream elbow 97 and a downstream elbow 98 are connected to both ends of the trough 94 . The drain trough 94 laterally drains rainwater introduced from the eaves trough 81 via the drain 10 and the upstream elbow 97 , and introduces the rainwater into the vertical trough 96 via the downstream elbow 98 . In FIG. 1, rainwater is indicated by sandy areas.

As shown in FIG. 2, the upper member 11 of the drain 10 includes an upper flange 16 installed on the upper surface of the bottom plate 82 of the eaves gutter 81, an upper cylindrical portion 11a provided below the upper flange 16, and the upper flange 16. It has an upper curved surface portion 14 that connects with the upper cylindrical portion 11a. A male screw 13 for screwing with the lower member 90 is formed on the outer peripheral surface of the upper cylindrical portion 11a. The upper member 11 is formed by injection molding of resin such as rigid vinyl chloride resin, polycarbonate, and ABS. The upper member 11 may be made of metal such as cast iron.

On the other hand, the lower member 90 of the drain 10 has a lower tubular portion 91 and an outward lower flange 92 formed at the upper end of the lower tubular portion 91 . A female thread 91 a is formed on the inner peripheral surface of the lower tubular portion 91 . The female screw 91a is divided in the circumferential direction of the lower cylindrical portion 91 and formed intermittently, but may be formed as a continuous shape as a whole. The lower member 90 is connected to the upper end of the upstream elbow 97 by fitting the lower tubular portion 91 inside a large-diameter tubular portion 97 a formed at the upper end of the upstream elbow 97 . Similarly to the upper member 11, the lower member 90 is also formed by injection molding of resin such as hard vinyl chloride resin. The lower member 90 may be made of metal such as cast iron.

The upper member 11 of the drain 10 is installed in the opening 82a of the eaves gutter 81, and the upper cylindrical portion 11a of the upper member 11 protrudes downward from the opening 82a. 13 is coupled to the internal thread 91 a of the lower member 90 . In this state, as described later, the bottom plate 82 of the eaves gutter 81 is sandwiched between the lower flange 92 of the lower member 90 and the upper flange 16 of the upper member 11 to fix the drain 10 to the eaves gutter 81 .

The downpipe 96 is fixed to the building along the vertical direction by a plurality of fixtures (not shown) or the like so as to follow the outer wall surface of the building. The lower end of the downpipe 96 may be connected to a drainage pipe buried in the ground so that the rainwater flowing down the inside of the downpipe 96 is drained to the drainage pipe.

3A-10 show the upper member 11. FIG. The upper member 11 is a drainage member having a high rainwater drainage function when a large amount of rainwater flows into the eaves gutter 81 during heavy rain or the like. The upper member 11 includes blades 30 connected to a plurality of positions in the circumferential direction of the upper surface of the upper flange 16 and the inner peripheral surface of the upper curved surface portion 14, and an inner cylindrical portion 40 connected to the radially inner ends of the plurality of blades 30. , and a funnel portion 41 continuous to the upper end of the inner cylindrical portion 40 .

The funnel portion 41 continues upward from the upper end of the inner cylinder portion 40 and spreads radially outward like a trumpet. The conical inner and outer peripheral surfaces of the funnel portion 41 and the inner and outer peripheral surfaces of the inner cylindrical portion 40 are smoothly connected by curved surfaces including a curved surface portion having an arcuate cross section.

The upper tubular portion 11a of the upper member 11 is substantially cylindrical. A male screw 13 is formed on the outer peripheral surface of the upper cylindrical portion 11a. The male thread 13 can be screwed into a female thread 91 a ( FIG. 2 ) formed in the lower member 90 .

As shown in FIG. 10, the upper curved surface portion 14 has a smooth curved surface with an arcuate cross section on its inner peripheral surface. The inner peripheral surface of the upper end of the upper cylindrical portion 11 a and the upper surface of the inner peripheral end of the upper flange 16 are smoothly connected by the inner peripheral surface of the upper curved surface portion 14 .

Furthermore, the upper curved surface portion 14 has a plurality of ridges 15 on its outer peripheral surface. Each projection 15 has a substantially arcuate cross section as shown in FIG. As will be described in detail later, even if an adhesive is provided between the lower surface of the upper flange 16 of the upper member 11 and the eaves gutter 81, the flow of the adhesive from the upper flange 16 side to the inner peripheral side is prevented. It can be suppressed by the protrusion 15 .

The diameter D1 (FIG. 3A) of the maximum circumscribed circle contacting the outside of at least one ridge portion 15 provided on the upper curved surface portion 14 is larger than the inner diameter D2 (FIG. 2) of the lower cylindrical portion 91 of the lower member 90. (D1>D2) is preferable.

Furthermore, in the upper member 11, a portion partitioned by a plurality of blades 30 described later between the outer peripheral end of the upper side surface of the upper flange 16 and the outer peripheral end of the upper end portion of the funnel portion 41 described later flows into the eaves gutter 81. An inflow opening 20 (FIG. 10) for introducing rainwater into the upper member 11 is provided.

The plurality of blades 30 are plate-shaped and connected to a plurality of positions in the circumferential direction of the upper end of the upper cylindrical portion 11a so as to extend from the upper end of the outer peripheral portion of the upper flange 16 to the inner peripheral end of the lower end portion of the upper curved surface portion 14, It extends radially. The radially outer end of each blade 30 is a flat surface substantially parallel to the central axis O (FIG. 10) of the upper cylindrical portion 11a, or a tapered surface slightly inclined radially outward toward the lower end. Each blade 30 may be inclined with respect to the radial direction in plan view. Both circumferential side surfaces of each blade 30 are flat, but may be curved. The number of blades 30 can be an odd number such as five.

The upper end of each blade 30 is formed with a protruding portion 31 that protrudes upward from a position spaced radially outward from the outer peripheral end of the upper end of the funnel portion 41 . Furthermore, a notch 32 having a substantially rectangular cross section is formed in the radially inner portion of the lower end of each blade 30 . The plurality of vanes 30 have the function of rectifying rainwater flowing in from the inflow opening 20 . The notch 32 enhances the drainage function of rainwater that has flowed in from the inflow opening 20. - 特許庁

The inner cylindrical portion 40 is a cylindrical portion connected to the lower portion of the radially inner end of the plurality of blades 30 and extending vertically, the lower end facing the inner space of the upper cylindrical portion 11a.

A disc-shaped outward flange 42 is formed at the upper end of the funnel portion 41 . The funnel portion 41 is connected to upper portions of the radially inner ends of the plurality of blades 30 . The upper end outer diameter of the funnel portion 41 is smaller than the inner diameter of the cylindrical inner peripheral surface of the upper cylindrical portion 11a. The central axis O of the funnel portion 41, the inner cylindrical portion 40, and the upper cylindrical portion 11a are aligned.

11 to 17 show a state in which the upper member 11 is combined with the lower member 90, that is, the female thread of the lower member 90 and the male thread of the upper member 11 are screwed together to form the drain 10. FIG. As shown in FIGS. 11 to 17, in the lower member 90, a lower flange 92 and a lower cylindrical portion 91 are connected via a stepped portion 93 bent to have a substantially L-shaped cross section. The stepped portion 93 includes an outward disc portion 93a that continues from the upper end of the lower cylindrical portion 91, and a curved surface that is connected to the outer peripheral end of the disc portion 93a and that curves so that the diameter increases radially outward. and a portion 93b. As shown in FIG. 17, the inner peripheral surface of the curved portion is an inclined surface whose diameter increases radially outward.

A method of assembling the eaves gutter drainage structure 80 including the drain 10 described above will be described. First, an opening 82a is formed in the bottom plate 82 of the eaves gutter 81 at a position where the upper member 11 is attached. Next, the upper member 11 is inserted into the eaves gutter 81, the upper cylindrical portion 11a is first inserted into the opening 82a of the eaves gutter 81 to protrude downward, and the upper flange 16 is attached to the peripheral edge of the opening 82a of the bottom plate 82. Lock. At this time, an adhesive is applied between the lower surface of the upper flange 16 and the upper surface of the bottom plate 82 for water sealing. For example, the upper flange 16 is placed on the upper surface of the bottom plate 82 in a state in which adhesive is applied to the lower surface of the upper flange 16 in advance.

Then, as shown in FIG. 18, a lower member 90 is fixed by screw coupling to the outer peripheral side of the upper cylindrical portion 11a that protrudes downward from the opening 82a of the eaves gutter 81, and the upper flange 16 of the upper member 11, The bottom plate 82 of the eaves gutter 81 is sandwiched and fixed with the lower flange 92 of the lower member 90 from both upper and lower sides. After that, a downspout 96 is connected to the lower member 90 via an upstream elbow 97 , a trough 94 and a downstream elbow 98 . In use, the downspout 96 is arranged to extend vertically.

According to the eaves gutter drainage structure 80, rainwater falling on the roof flows into the eaves gutter 81, flows in from the inflow opening 20 of the upper member 11, passes through the inside of the upper cylindrical portion 11a, and flows into the gutter 94. It is introduced into the downpipe 96 via the like. In this state, when the amount of rainwater flowing through the downpipe 96 exceeds a predetermined flow rate, the rainwater flowing down the downpipe 96 is vigorously drained downward (in the direction of the white arrow in FIG. 1) from the downpipe 96 due to the siphon phenomenon. .

According to the drain 10 described above, the outer peripheral surface of the upper curved surface portion 14 of the upper member 11 has a plurality of ridges 15 continuous over the entire circumference. As a result, even when an adhesive is applied between the lower surface of the upper flange 16 and the bottom plate 82 of the eaves gutter 81 by applying an adhesive to the lower surface of the upper flange 16 of the upper member 11, the inner circumference can be removed from the upper flange 16 side. The flow of the adhesive to the side can be suppressed by the plurality of protrusions 15 . Specifically, when the upper curved surface portion 14 does not have a ridge, the adhesive runs along the curved outer peripheral surface of the upper curved surface portion 14, and the upper cylindrical portion 11a having the male screw 13 is vigorously applied. It may be guided to the outer peripheral surface. On the other hand, when the upper curved surface portion 14 has the ridge portion 15 as in the embodiment, the ridge portion 15 dams up the flow of the adhesive to the inner peripheral side and vigorously adheres to the male screw 13 side. It can prevent the agent from flowing. Thereby, arrival of the adhesive to the male screw 13 can be suppressed. Therefore, even if the drain 10 needs to be reattached and the upper member 11 and the lower member 90 are removed from the eaves gutter 81, it is possible to prevent the male screw 13 and the female screw 91a from being bonded with an adhesive. , the removal work of the upper member 11 and the lower member 90 from the eaves gutter 81 can be easily performed.

Furthermore, if the diameter D1 of the maximum circumscribed circle contacting the outside of at least one ridge portion 15 is larger than the inner diameter D2 of the upper end of the lower cylindrical portion 91 of the lower member 90, the ridge portion Even if the adhesive blocked by 15 falls away from the outer peripheral surface of the upper curved surface portion 14, the adhesive is received by the upper surface of the disk portion 93a of the stepped portion 93 of the lower member 90, and is attached to the male screw 13. The arrival of the adhesive can be further suppressed.

In the above description, a plurality of ridges 15 are formed on the outer peripheral surface of the upper curved surface 14, but only one ridge may be provided on the upper curved surface. In addition, each ridge portion 15 is not limited to being formed over the entire circumference of the upper member, and may be provided intermittently along the circumferential direction of the upper member. On the other hand, in order to prevent the adhesive from reaching the male screw 13, the protrusion 15 should be formed along the entire circumference of the upper member 11, and a plurality of protrusions 15 should be provided. is preferred.

Moreover, the cross-sectional shape of the ridge portion is not limited to a substantially arc shape, and various shapes such as a substantially triangular shape can be adopted.

Also, the drain is not limited to the one used in the eaves gutter drainage structure 80 having the gutter 94 and the elbows 97, 98 as shown in FIG. good.

10 eaves gutter drain (drain), 11 upper member, 11a upper cylindrical portion, 13 male screw, 14 upper curved surface portion, 15 ridge portion, 16 upper flange, 20 inflow opening, 30 blade, 31 protrusion, 32 notch , 40 inner tubular portion, 41 funnel portion, 42 outward flange, 80 eaves gutter drainage structure, 81 eaves gutter, 82 bottom plate, 82a opening, 83 front wall, 84 rear wall, 90 lower member, 91 lower tubular portion, 91a Female screw, 92 lower flange, 93 stepped portion, 93a disk portion, 94 nominal gutter, 96 vertical gutter, 97 upstream elbow, 97a large diameter cylindrical portion, 98 downstream elbow.

Claims (4)

An eaves gutter drain installed in an opening formed in an eaves gutter,
comprising an upper member and a lower member,
The upper member includes an upper flange installed on the upper surface of the bottom plate of the eaves gutter, an upper tubular portion provided below the upper flange, and an upper curved surface portion connecting the upper flange and the upper tubular portion. have
A male screw is formed on the outer peripheral surface of the upper cylindrical portion for screwing with the lower member,
The outer peripheral surface of the upper curved surface portion has a ridge portion,
Eaves gutter drain. In the eaves gutter drain according to claim 1,
The ridge portion is provided along the entire circumference of the upper curved surface portion,
Eaves gutter drain. In the eaves gutter drain according to claim 1 or claim 2,
A plurality of the ridges are provided on the outer peripheral surface of the upper curved surface portion,
Eaves gutter drain. the eaves gutter;
An eaves gutter structure comprising the eaves gutter drain according to any one of claims 1 to 3 installed in the eaves gutter.

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