JP2023170257A - Eaves gutter drain and eaves gutter structure - Google Patents

Abstract

To provide an eaves gutter drain which prevents the appearance of a drain from deteriorating when installed, and which is easily installed at an appropriate rotation angle by a worker who installs the drain in an eaves gutter.SOLUTION: An eaves gutter drain 10 has a drain upper unit and a drain lower unit. The drain lower unit has a lower flange, an outer cylinder provided below the lower flange, and a lower diameter-reducing part connecting the lower flange and the outer cylinder. The drain upper unit has an upper flange arranged on the upper surface of the bottom plate of the eaves gutter, an inner cylinder provided below the upper flange, and an upper diameter-reducing part connecting the upper flange and the inner cylinder and having a diameter reduced toward the lower side. An outer circumferential wall surface of the upper diameter-reducing part is configured by a curved surface that is recessed radially inward. A rib that protrudes outward from a lower-end part to an upper-end part is disposed on at least a part of the outer circumferential surface of the upper diameter-reducing part in a circumferential direction. The rib extends in a vertical direction in a side view from the lower end of the outer peripheral surface of the upper reduced diameter part toward the upper-end part.SELECTED DRAWING: Figure 3B

Description

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

BACKGROUND ART Traditionally, rainwater that has fallen into eaves gutters attached to the roof of a building is collected, sent to a vertical gutter, and discharged from the bottom through the vertical gutter. At this time, a drain is provided in an opening provided in the bottom plate of the eaves gutter, and the vertical gutter is connected to the eaves gutter via the drain.

Patent Document 1 discloses that an eaves gutter drain includes an upper member (upper drain unit) and a lower member (lower drain unit), and the upper member and the lower member are screwed together with the bottom plate of the eaves gutter sandwiched between them. It is described that the drain is connected to the gutter. In Patent Document 1, a cylindrical portion is provided below the flange of the upper member, and the cylindrical portion and the flange are connected by a diameter-reducing portion whose diameter decreases as it goes downward. The reduced diameter portion has an inner circumferential surface that is a smooth curved surface with an arcuate cross section. Wings (fins) are erected at multiple positions in the circumferential direction from the upper surface of the outer circumferential part of the flange to the lower end of the reduced diameter part, and an inner cylindrical part extending in the vertical direction is connected to the radially inner end of the plurality of wings. be done.

JP 2021-70957 Publication

Conventionally, eave gutter drains have not been provided with anything that indicates the position of the rotation angle when installing the eaves gutter drain, which serves as a dedicated landmark for realizing appropriate installation. As a result, when the drain is installed in the eaves gutter, it may be installed in a state where it is likely to cause problems, such as foreign objects easily getting caught in the drain within the eaves gutter. For example, if fins are installed at five equal parts in the circumferential direction of an eaves gutter drain, if the drain is not installed at an appropriate rotational angle position in relation to the eaves gutter, foreign objects such as fallen leaves may accumulate in the eaves gutter. There are problems such as easily getting caught on the fins. On the other hand, if the dedicated mark is visible after construction, it may cause the aesthetic appearance of the installed state to be impaired.

The purpose of the present disclosure is to provide an eaves gutter drain that prevents deterioration of the aesthetic appearance of the installed state of the drain, and that allows a worker who installs the drain in the eaves gutter to easily install it at an appropriate rotation angle, and to is to provide an eave gutter structure including a drain.

An eaves gutter drain according to one aspect of the present disclosure is an eaves gutter drain installed in an eaves gutter so as to pass through an opening for rainwater drainage provided in the bottom plate of the eaves gutter, and includes an upper drain unit and a lower drain unit. The lower drain unit includes a lower flange disposed on the lower surface of the bottom plate, an outer cylinder provided below the lower flange, and a lower diameter reducing unit that connects the lower flange and the outer cylinder and whose diameter decreases as it goes downward. The upper drain unit has an upper flange disposed on the upper surface of the bottom plate, an inner cylinder provided below the upper flange and which guides rainwater downward, and an inner cylinder connecting the upper flange and the inner cylinder, Therefore, the outer circumferential wall surface of the upper reduced diameter section is constituted by a curved surface concave toward the inside in the radial direction, and at least a portion of the outer circumferential surface of the upper reduced diameter section in the circumferential direction is provided. A rib is arranged extending outward from the lower end to the upper end, and the rib extends vertically from the lower end to the upper end of the outer peripheral surface of the upper reduced diameter part in a side view. It's a drain.

An eaves gutter drain according to one aspect of the present disclosure is an eaves gutter drain installed in an eaves gutter so as to pass through an opening for rainwater drainage provided in the bottom plate of the eaves gutter, and includes an upper drain unit and a lower drain unit. The lower drain unit includes a lower flange disposed on the lower surface of the bottom plate, an outer cylinder provided below the lower flange, and a lower diameter reducing unit that connects the lower flange and the outer cylinder and whose diameter decreases as it goes downward. The upper drain unit has an upper flange disposed on the upper surface of the bottom plate, an inner cylinder provided below the upper flange and which guides rainwater downward, and an inner cylinder connecting the upper flange and the inner cylinder, Therefore, the outer circumferential wall surface of the upper reduced diameter section is composed of a curved surface concave toward the inside in the radial direction, and the outer circumferential surface of the upper reduced diameter section or the lower surface of the upper flange is This is an eaves gutter drain in which a protrusion length or digging depth of 1 mm or less and a diameter of 20 mm or less are provided in a part of the circumferential direction.

An eaves gutter structure according to one embodiment of the present disclosure includes an eaves gutter and an eaves gutter drain according to one embodiment of the present disclosure, which is installed in the eaves gutter.

According to the eaves gutter drain and the eave gutter structure of one aspect of the present disclosure, a worker who installs the drain in the eaves gutter can rotate the drain by using the ribs, protrusions, or recesses provided on the drain as a mark. Easier to install in proper conditions. Furthermore, since the ribs, protrusions, or recesses are provided at positions that are not visible when the eave gutter drain is installed, it is possible to prevent the appearance of the drain from deteriorating.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing of the schematic structure of the eaves gutter drainage structure containing the eaves gutter drain of embodiment. FIG. 2 is an enlarged view of part A in FIG. 1 showing the eaves gutter drain of the embodiment. It is a front view of the drain upper unit of the eaves gutter drain shown in FIG. FIG. 3B is a view of the upper drain unit shown in FIG. 3A viewed diagonally from below. It is an enlarged view of part B in FIG. 3B. FIG. 3B is a view of the upper drain unit shown in FIG. 3A viewed diagonally from above. It is a left side view of the drain upper unit shown in FIG. 3A. It is a right view of the drain upper unit shown in FIG. 3A. FIG. 3B is a rear view of the upper drain unit shown in FIG. 3A. FIG. 3B is a top view of the upper drain unit shown in FIG. 3A. FIG. 3B is a bottom view of the upper drain unit shown in FIG. 3A. 9 is a sectional view taken along line CC in FIG. 8. FIG. In the eaves gutter drain of the embodiment, it is a view of a combination of an upper drain unit and a lower drain unit, viewed diagonally from above. FIG. 12 is a front view of the combination of FIG. 11; FIG. 12 is a left side view of the combination of FIG. 11; FIG. 12 is a right side view of the combination of FIG. 11; FIG. 12 is a rear view of the combination of FIG. 11; FIG. 12 is a top view of the combination of FIG. 11; FIG. 12 is a bottom view of the combination of FIG. 11; FIG. 16 is a view corresponding to the DD cross section in FIG. 15, showing the usage state of the eaves gutter drain of the embodiment. FIG. 18 is an enlarged view of part E in FIG. 17 with some parts omitted; It is a schematic diagram showing the relationship between the water direction and the fins and ribs when the eaves gutter drain of the embodiment is installed in the eaves gutter, viewed from above. It is a figure corresponding to FIG. 19 which shows an example when the eaves gutter drain of a comparative example is installed in an eaves gutter. FIG. 20 is a diagram corresponding to FIG. 19 , showing a state in which another example of the eaves gutter drain of the embodiment is installed in the eaves gutter. It is a front view of the drain upper unit which comprises the eaves gutter drain of another example of embodiment. FIG. 23 is an enlarged view of a part of the upper drain unit shown in FIG. 22, viewed diagonally from below. 23 is a left side view of the upper drain unit shown in FIG. 22. FIG. 23 is a bottom view of the upper drain unit shown in FIG. 22. FIG. FIG. 23 is a schematic diagram illustrating the relationship between the water direction and the fins and convex portions when the eaves gutter drain including the above-drain unit shown in FIG. 22 is installed in the eaves gutter, viewed from above. It is a schematic diagram which shows the relationship between a water direction, a fin, and a convex part, seeing from above the state where the eaves gutter drain of another example of embodiment was installed in the eaves gutter. It is a front view of the drain upper unit which comprises the eaves gutter drain of another example of embodiment. FIG. 29 is an enlarged view of a part of the upper drain unit shown in FIG. 28, viewed diagonally from below. 29 is a left side view of the upper drain unit shown in FIG. 28. FIG. FIG. 29 is a bottom view of the upper drain unit shown in FIG. 28. It is a front view of the drain upper unit which comprises the eaves gutter drain of another example of embodiment. FIG. 29 is an enlarged view of a part of the upper drain unit shown in FIG. 28, viewed diagonally from below. 29 is a left side view of the upper drain unit shown in FIG. 28. FIG. FIG. 29 is a bottom view of the upper drain unit shown in FIG. 28. It is an enlarged view of a part of the drain upper unit which comprises the eaves gutter drain of another example of embodiment, seen diagonally from below. 37 is a left side view of the upper drain unit shown in FIG. 36. FIG. 37 is a bottom view of the upper drain unit shown in FIG. 36. FIG.

Hereinafter, embodiments of the eaves gutter drain according to the present disclosure will be described with reference to the drawings. The shape, number, material, etc. described below are examples for explanation, and can be changed as appropriate depending on the specifications of the eave gutter drain or the eave gutter structure including the eave gutter drain. In the following description, the same elements are given the same reference numerals in all the drawings.

Embodiments will be described using drawings. FIG. 1 is a cross-sectional view of 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 of part A in FIG. 1 showing the eave gutter drain 10.

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

The eaves gutter structure 70 includes an eaves gutter 81 and an eaves gutter drain 10 installed in the eaves gutter 81. The eaves gutter 81 is a resin molded product, and has a bottom plate 82, a front wall 83 that stands from the front end of the bottom plate 82, and a rear wall 84 that stands 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 device (not shown) attached to the building, and is formed to receive rainwater flowing down from the eaves of the roof.

An opening 82a (FIG. 2) for rainwater drainage is formed in the bottom plate 82 of the eaves gutter 81. The eave gutter drain 10 includes an upper drain unit 11 and a lower drain unit 90. Hereinafter, the "upper drain unit" will be referred to as "upper unit", and the "lower drain unit" will be referred to as "lower unit". The upper unit 11 is installed in the eaves gutter 81 so as to pass through the opening 82a. Hereinafter, "eaves gutter drain" will be referred to as "drain." The structure of the drain 10 will be explained in detail later.

The gutter 94 is connected to an upstream elbow 97 and a downstream elbow 98 at both ends. The gutter 94 allows rainwater introduced from the eaves gutter 81 via the drain 10 and the upstream elbow 97 to flow laterally, and introduces it into the vertical gutter 96 via the downstream elbow 98. In Figure 1, rainwater is shown by sandy areas.

As shown in FIG. 2, the lower unit 90 of the drain 10 includes an outer cylinder 91, an outward lower flange 92 formed at the upper end of the outer cylinder 91, and a lower diameter-reduced portion 93. The lower flange 92 is arranged on the lower surface of the bottom plate 82 of the eave gutter 81. The outer cylinder 91 is provided below the lower flange 92. The lower diameter reducing portion 93 connects the lower flange 92 and the outer cylinder 91, and its diameter decreases as both the inner and outer peripheral surfaces move downward. Although the lower diameter reduced portion 93 is shown in a simplified manner in FIG. 2, as shown in FIG. The outer peripheral surface of 93 is a curved surface having an arcuate cross section. A step portion 93a extending radially inward is provided at the lower end of the lower reduced diameter portion 93. The inner circumferential surface of the lower reduced diameter portion 93 may be a curved surface having an arcuate cross section, and the outer circumferential surface of the lower reduced diameter portion 93 may be a tapered surface having a linear cross section.

A female thread 91a is formed on the inner peripheral surface of the outer cylinder 91. Although the female threads 91a are formed intermittently and separated in the circumferential direction of the outer cylinder 91, they may have a continuous shape as a whole. The lower unit 90 is connected to the upper end of the upstream elbow 97 by fitting the outer cylinder 91 inside a large diameter cylindrical portion 97a formed at the upper end of the upstream elbow 97. The upper end of the upstream elbow 97 may abut against the stepped portion 93a. The stepped portion 93a may be omitted, and the entire lower diameter reduced portion may have a shape in which the diameter decreases downward. The lower unit 90 is formed by injection molding of a resin such as hard vinyl chloride resin, polycarbonate, or ABS. The lower unit 90 may be made of metal such as cast iron. The lower unit 90 may be made of metal such as cast iron.

The upper unit 11 of the drain 10 includes an upper flange 16 disposed on the upper surface of the bottom plate 82 of the eaves gutter 81, an inner cylinder 11a provided below the upper flange 16 and guiding rainwater downward, and the upper flange 16 and the inner cylinder 11a. It has an upper reduced diameter part 14 that connects with. The diameter of the upper reduced diameter portion 14 decreases as the inner circumferential surface and outer circumferential wall surface move downward. As shown in FIG. 10, which will be described later, the inner circumferential surface of the upper reduced diameter portion 14 is a curved surface with an arcuate cross section that is concave toward the inside in the radial direction, so that rainwater flows from the upper side of the upper flange 16 to the inner cylinder. It flows smoothly toward the inside of 11a. As shown in FIG. 2, the outer circumferential wall surface 14a of the upper reduced diameter portion 14 is also constituted by a curved surface having an arcuate cross section that is concave toward the inside in the radial direction. The "outer circumferential wall surface 14a" of the upper reduced diameter section 14 is a portion of the outer circumferential surface of the upper reduced diameter section 14 excluding any protrusions or recesses such as ribs 15a described below, if any.

A male thread 13 for screwing together with the lower unit 90 is formed on the outer peripheral surface of the inner cylinder 11a. The upper unit 11, like the lower unit 90, is formed by injection molding of resin. The upper unit 11 may be made of metal such as cast iron.

Further, on at least a portion of the outer circumferential surface of the upper reduced diameter portion 14 in the circumferential direction, a plurality of projecting portions protrude outward from the vicinity of the upper end of the inner cylinder 11a at the lower end portion to the vicinity of the inner peripheral end of the upper flange 16 at the upper end portion. A rib 15a is provided. Thereby, as will be described later, a worker who installs the drain 10 in the eaves gutter 81 can easily install the drain 10 at an appropriate rotation angle. The rib 15a will be explained in detail later.

The upper unit 11 of the drain 10 is installed around the opening 82a of the eave gutter 81, and with the inner cylinder 11a of the upper unit 11 protruding downward from the opening 82a, a male thread formed on the outer peripheral surface of the inner cylinder 11a is installed. 13 is coupled to the female thread 91a of the lower unit 90. In this state, as will be described later, the drain 10 is fixed to the eaves gutter 81 with the bottom plate 82 of the eaves gutter 81 sandwiched between the lower flange 92 of the lower unit 90 and the upper flange 16 of the upper unit 11 from both upper and lower sides.

The downpipe 96 is fixed to the building by a plurality of fixtures (not shown) or the like in the vertical direction along the outer wall surface of the building. The lower end of the vertical trough 96 may be connected to a drain pipe buried underground, and rainwater flowing down the inside of the vertical trough 96 may be drained to the drain pipe.

The upper unit 11 will be explained in more detail using FIGS. 3A to 10. The upper unit 11 is a drainage member that has 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 unit 11 includes fins 30 connected to a plurality of positions in the circumferential direction on the upper surface of the upper flange 16 and the inner peripheral surface of the upper reduced diameter portion 14, and an upper inner cylinder 40 connected to the radially inner ends of the plurality of fins 30. and a funnel part 41 continuous to the upper end of the upper inner cylinder 40. The plurality of fins 30 are erected at a plurality of positions on the upper surface of the upper flange 16 in the circumferential direction.

The funnel portion 41 continues upward from the upper end of the upper inner cylinder 40 and expands radially outward in a trumpet shape. The conical inner and outer circumferential surfaces of the funnel portion 41 and the inner and outer circumferential surfaces of the upper inner tube 40 are smoothly connected by a curved surface including a curved surface having an arcuate cross section.

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

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

Furthermore, a rib 15a that protrudes outward is arranged on at least a portion of the outer peripheral surface of the upper reduced diameter portion 14 in the circumferential direction from near the upper end of the inner cylinder 11a at the lower end to near the inner peripheral end of the upper flange at the upper end. be done. Specifically, as shown in FIG. 9, rib groups 15 are provided on the outer circumferential surface of the upper reduced diameter portion 14 at two positions whose circumferential phases differ by approximately 180 degrees. Each rib group 15 is constituted by three ribs 15a arranged in parallel in close proximity in the circumferential direction (for example, at intervals of about 1 mm to 3 mm).

As shown in FIG. 3A, each rib 15a extends in the vertical direction from the lower end to the upper end of the outer peripheral surface of the upper reduced diameter portion 14 in a side view. At this time, one rib group 15 (on the upper side in FIG. 9) is arranged at a position in the circumferential direction that is biased toward one side in the circumferential direction (forward clockwise in the bottom view of FIG. 9) between two circumferentially adjacent fins 30. be done. The other (upper side in FIG. 9) rib group 15 is arranged at a circumferential position biased toward the other circumferential side (clockwise rear side in FIG. 9) between two circumferentially adjacent fins 30. Further, as shown in FIG. 10 and FIG. 18 described later, the radially outer end surface, which is the tip end surface of each rib 15a, has an arc shape with the vertically intermediate portion concave toward the radially inward side, and the outer peripheral wall surface It has a circular arc shape with a radius of curvature larger than the radius of curvature of the circular arc 14a. The radially outer end surface of each rib 15a may be an inclined surface having a linear cross section that slopes upward and radially outward. Note that, at the upper end of the radially outer end surface of each rib 15a, an R portion having an arcuate cross-sectional shape with a minimum radius of curvature, for example, 0.5 mm is provided at the connection portion with the lower surface of the upper flange 16. Good too. By providing each rib 15a on the drain 10, as will be described later, it is possible to prevent deterioration of the aesthetic appearance of the drain installation state, and the operator who installs the drain 10 in the eaves gutter 81 can easily adjust the rotation angle of the drain 10. Easier to install in proper conditions.

Furthermore, as shown in FIG. 10, in the upper unit 11, a portion between the outer peripheral end of the upper surface of the upper flange 16 and the upper end outer peripheral end of the funnel part 41 is partitioned by a plurality of fins 30, which will be described later. This serves as an inflow opening 20 for introducing rainwater that has flowed into the eaves gutter 81 into the upper unit 11.

The plurality of fins 30 are plate-shaped and connected at a plurality of positions in the circumferential direction near the upper end of the inner cylinder 11a so as to extend from the upper end of the outer peripheral part of the upper flange 16 to the inner peripheral end of the lower end of the upper reduced diameter part 14. , extending radially. The number of fins 30 is five, which is an odd number. The radially outer end of each fin 30 is a plane substantially parallel to the central axis O (FIG. 10) of the inner cylinder 11a, or a tapered surface slightly inclined radially outward toward the lower end. Each fin 30 may be inclined with respect to the radial direction in plan view. Both circumferential side surfaces of each fin 30 are flat, but may be curved. The number of fins 30 may be an odd number, such as 3, 5, 7, or 9, in addition to 5.

A protrusion 31 is formed at the upper end of each fin 30 to protrude upward from a position radially outwardly away from the outer peripheral end of the upper end of the funnel portion 41 . Furthermore, a notch 32 (FIG. 10) having a substantially rectangular cross section is formed in the radially inner portion of the lower end of each fin 30. As shown in FIG. The plurality of fins 30 have a function of rectifying rainwater flowing in from the inflow opening 20. The cutout 32 enhances the drainage function of rainwater flowing in from the inflow opening 20.

The upper inner tube 40 is a cylindrical portion that is connected to the lower portion of the radially inner end of the plurality of fins 30, extends in the vertical direction, and has a lower end facing the inner space of the inner tube 11a.

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

11 to 18 show a state in which the upper unit 11 and the lower unit 90 are combined, that is, the drain 10 is formed by screwing the female screw of the lower unit 90 to the male screw of the upper unit 11. As shown in FIGS. 11 to 18, in the lower unit 90, a lower flange 92 and an outer cylinder 91 are connected via a lower diameter reduced portion 93.

A method of assembling the eaves gutter structure 70 including the above-mentioned drain 10 will be explained. First, an opening 82a is formed in the bottom plate 82 of the eave gutter 81 at a position where the upper unit 11 is attached. Next, the upper unit 11 is inserted into the eaves gutter 81, the inner cylinder 11a is first inserted into the opening 82a of the eaves gutter 81 so as to protrude downward, and the upper flange 16 is arranged at the periphery of the opening 82a of the bottom plate 82. do. 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 to achieve water sealing. For example, the upper flange 16 is placed on the upper surface of the bottom plate 82 with an adhesive applied to the lower surface of the upper flange 16 in advance.

Then, as shown in FIG. 17, the lower unit 90 is screwed to the outer circumference of the inner cylinder 11a that protrudes downward from the opening 82a of the eave gutter 81, and the upper flange 16 of the upper unit 11 and the lower The bottom plate 82 of the eaves gutter 81 is sandwiched and fixed between the lower flange 92 of the unit 90 and the bottom plate 82 from both upper and lower sides. Thereafter, a vertical gutter 96 is connected to the lower unit 90 via an upstream elbow 97, a nominal gutter 94, and a downstream elbow 98. In use, the downpipe 96 is arranged so as to extend in the vertical direction.

According to such eaves gutter structure 70, rainwater that has fallen on the roof flows into the eaves gutter 81, flows through the inflow opening 20 of the upper unit 11, passes inside the inner cylinder 11a, and flows into the gutter 94 etc. It is introduced into the down pipe 96 through the pipe. In this state, when the rainwater flowing through the downpipe 96 exceeds a predetermined flow rate, the rainwater flowing down the downpipe 96 is vigorously drained downward from the downpipe 96 (in the direction of the white arrow in FIG. 1) due to the siphon phenomenon. .

Furthermore, according to the above drain 10, the outer circumferential surface of the upper reduced diameter portion 14 constituting the upper unit 11 has two positions having different phases in the circumferential direction, and protrudes outward from the lower end to the upper end. Three ribs 15a are arranged. Each rib 15a extends vertically from the lower end of the outer peripheral surface of the upper reduced diameter portion 14 toward the upper end in a side view. Thereby, a worker who installs the drain 10 in the eaves gutter 81 using the rib 15a provided on the drain 10 as a mark can easily install the drain 10 at an appropriate rotation angle. Further, the thickness of each rib 15a is set to, for example, about 1 mm to prevent the rib 15a from being physically crushed easily and to prevent problems such as sink marks in the molded product when the drain is made of resin. Make it. Furthermore, since each rib 15a is provided at a position that is not visible when the drain 10 is installed, it is possible to prevent the aesthetic appearance of the installed drain 10 from deteriorating. As a comparative example, it may be possible to affix a seal to a part of the circumferential direction of the drain in order to indicate the position of a mark on the drain, but this would tend to cause unnecessary dust to adhere to the periphery of the seal. According to the embodiment, adhesion of such dust to the drain can be suppressed.

FIG. 19 is a schematic diagram showing the relationship between the water direction and the fins 30 and ribs 15a when the drain 10 of the embodiment is installed in the eaves gutter 81, viewed from above. The water direction is the higher side when the bottom plate 82 of the eave gutter 81 is inclined with respect to the horizontal direction, and is the left side in FIG. When installing the drain 10 in the eaves gutter 81, each rib 15a formed on the drain 10 is arranged along the longitudinal direction of the eaves gutter 81, which connects the above water direction and the below water direction (right side in FIG. 19). . In FIG. 19, each rib 15a is shown seen through from above.

In addition, in the installation instructions such as the construction manual for the operator of the drain 10, there is a content in advance that instructs the direction of rotation of the drain 10 to be regulated so that the direction of the rib 15a and the longitudinal direction of the eaves gutter 81 are aligned. It is preferred that it be described. Thereby, by determining the rotational position of the drain 10 while checking the position of the rib 15a, the operator can easily install the drain 10 in the eave gutter 81 in an appropriate state as shown in FIG. 19. In the state shown in FIG. 19, among the plurality of fins 30 of the drain 10, the fin 30 shown by arrow P1 in FIG. Prevented. Thereby, it is possible to suppress foreign objects such as fallen leaves from getting caught on the fin 30 at the most upstream end in the rainwater flow direction. Rainwater flowing in the eaves gutter 81 from above the water toward the drain 10 passes between the two fins 30 shown by arrows P1 and P2 in FIG. 19, or between the two fins 30 shown by arrows P1 and P3, and reaches the upper unit It flows into the inner cylinder 11a of No. 11 and is discharged downward.

Furthermore, since the ribs 15a are arranged on both the above-water side and the below-water side of the drain 10, the ribs 15a can be more easily recognized by the operator, and the construction work becomes easier. Furthermore, since a plurality of ribs 15a are provided on each of the above water side and the below water side of the drain 10, it becomes easier for the operator to recognize the ribs 15a. Note that only one rib 15a may be provided on each of the above water side and the below water side of the drain 10.

In addition, in Figure 19, the ribs of the drain are arranged along the longitudinal direction of the eaves gutter, but the rainwater flow direction of the eaves gutter and the positional relationship of each fin are kept the same as in Figure 19, and each rib is arranged vertically. The ribs can also be provided at different positions on the outer circumferential surface of the diameter portion 14 so as to be arranged at a phase different from that shown in FIG. 19 by 90 degrees. In this case, the operator restricts the rotation direction of the drain 10 so that the direction of the rib 15a is perpendicular to the longitudinal direction of the eaves gutter 81 (vertical direction in FIG. 19).

FIG. 20 is a diagram corresponding to FIG. 19 illustrating an example of a comparative example in which the drain 10a is installed in the eaves gutter 81. The drain 10a of the comparative example has the same structure as the drain 10 of the embodiment shown in FIGS. 1 to 19 in which the upper unit 11 is not provided with the rib 15a. When a worker installs the drain 10a of the comparative example in the eaves gutter 81, since there is no mark on the drain 10a that indicates the rotational direction position, as shown in FIG. The fins 30 may be arranged along the longitudinal direction of the eaves gutter. In this state, when rainwater flows from above the water toward the drain 10a, foreign objects such as fallen leaves are likely to get caught on the radially outer end of the fin 30 at the most upstream end in the rainwater flow direction (the position indicated by arrow Q in FIG. 20). . When foreign matter is caught in the fins 30 in this manner, other foreign matter that flows later is also likely to be caught by the foreign matter that was caught earlier, making it easier for the foreign matter to accumulate in the drain 10a. According to the drain 10 of the embodiment shown in FIGS. 1 to 19, such inconveniences can be prevented.

FIG. 21 is a diagram corresponding to FIG. 19, showing a state in which another example of the drain 10b of the embodiment is installed in the eaves gutter 81. In the drain 10b shown in FIG. 21, on the outer circumferential surface of the upper reduced diameter portion 14 constituting the upper unit 11, the circumferential center position between two circumferentially adjacent fins 30 indicated by arrows P1 and P2 in FIG. A rib group 15 consisting of a plurality of ribs 15a is arranged. The rib group 15 is provided only on a part of the outer peripheral surface of the upper reduced diameter portion 14 in the circumferential direction, and no other rib group is provided at a position that is 180 degrees out of phase with the rib group 15. When the drain 10b is installed in the eaves gutter 81, the rotation direction of the drain 10b is regulated so that the rib group 15 formed on the drain 10b is located furthest above the water. For example, in an installation instruction manual for a worker such as a drain construction manual, the direction of the ribs 15a is aligned with the longitudinal direction of the eaves gutter 81, and the direction of rotation of the drain is adjusted such that the rib group 15 is located in the water direction. It is preferable that content instructing the regulation to be specified is written in advance. Thereby, the operator can appropriately and easily install the drain 10b in the eaves gutter 81 in the state shown in FIG. 21. In the state of FIG. 21 as well, as in the case of FIG. 19, the fin 30 shown by arrows P1 and P2 in FIG. Disposition along the longitudinal direction is prevented. Thereby, it is possible to suppress foreign objects such as fallen leaves from getting caught on the fin 30 at the most upstream end in the rainwater flow direction.

Further, in the configuration of this example, as shown in FIG. 21, when the drain 10b is installed in the eaves gutter 81 such that the central rib 15a of the rib group 15 is located furthest above the water in the eaves gutter 81, The angle θm formed between the fins 30 indicated by arrows P1 and P2 arranged at the most upstream ends in the rainwater flow direction and the rainwater flow direction is approximately the maximum structural angle. Thereby, it is possible to further suppress foreign matter from getting caught on the fin 30 at the most upstream end in the rainwater flow direction. In this example, other configurations and operations are similar to those in FIGS. 1 to 19. Note that in this example, only one rib at the center between the two fins 30 may be provided instead of the rib group.

FIG. 22 is a front view of the upper unit 100 constituting another example of the drain 10c (FIG. 26) of the embodiment. FIG. 23 is an enlarged view of a part of the upper unit 100 viewed diagonally from below. FIG. 24 is a left side view of the upper unit 100. FIG. 25 is a bottom view of the upper unit 100. FIG. 26 is a schematic diagram showing the relationship between the water direction, the fins 30, and the convex portions 50 when the drain 10c including the upper unit 100 is installed in the eaves gutter 81, viewed from above.

In the configuration of this example, a rib group consisting of ribs is not provided on the outer circumferential surface of the upper reduced diameter section 14 constituting the upper unit 100, but instead, two ribs adjacent to each other in the circumferential direction are provided on the outer circumferential surface of the upper reduced diameter section 14. A convex portion 50 having a protrusion length of 1 mm or less and a diameter of 20 mm or less is provided at a circumferential center position between the two fins 30. The convex portion 50 has, for example, a hemispherical shape. Thereby, the convex portion 50 is provided on a part of the outer circumferential surface of the upper reduced diameter portion 14 in the circumferential direction. The convex portion 50 may have a cylindrical shape or a polygonal column shape such as a quadrangular column.

When installing the drain 10c of this example in the eaves gutter 81, as shown in FIG. 26, the rotation direction of the drain 10c is regulated so that the convex portion 50 formed on the drain 10c is located furthest above the water. Ru. For example, in the installation instructions for the operator, such as the construction manual for the drain 10c, content is written in advance to instruct the operator to restrict the rotational direction of the drain 10c so that the convex portion 50 is located furthest above the water. It is preferable. Thereby, the operator can appropriately and easily install the drain 10c in the eaves gutter 81 in the state shown in FIG. 26. Therefore, it is possible to prevent foreign objects such as fallen leaves from getting caught on the fin 30 at the most upstream end in the rainwater flow direction.

In addition, in the configuration of this example, when the drain 10c is installed in the eaves gutter 81 so that the convex portion 50 is located furthest above the water in the eaves gutter 81, as shown in FIG. The angle θm between the fins 30 shown by arrows P1 and P2 arranged at the ends and the rainwater flow direction is approximately the maximum structural angle. Thereby, it is possible to further suppress foreign matter from getting caught on the fin 30 at the most upstream end in the rainwater flow direction. Further, the operator can easily install the drain 10c at an appropriate rotation angle using the convex portion 50 provided on the drain 10c as a mark. Furthermore, since the convex portion 50 is provided at a position that is not visible when the drain 10c is installed, it is possible to prevent the appearance of the installed drain 10c from deteriorating. In this example, other configurations and operations are similar to the configurations in FIGS. 1 to 19 or the configuration in FIG. 21.

FIG. 27 is a diagram corresponding to FIG. 19, showing a state in which a drain 10d according to another example of the embodiment is installed in the eaves gutter 81. In the configuration of this example, the number of fins 30 provided in the upper unit 100a is six, which is an even number. Further, on the outer circumferential surface of the upper reduced diameter portion of the upper unit 100a, a convex portion 50 is provided at a circumferential center position between two circumferentially adjacent fins 30. In this way, in the configuration of the present disclosure, the number of fins may be an even number. The number of fins 30 is not limited to six, and may be two, four, or eight, for example.

When the drain 10d is installed in the eaves gutter 81, the rotation direction of the drain 10d is regulated so that the convex portion 50 formed on the drain 10d is located furthest above the water, as shown in FIG. 27. On the other hand, when the number of fins 30 is an even number as in this example, the convex portions 50 are arranged in a position where the phase thereof is 180 degrees different from that in FIG. The drain 10d may be installed in the eaves gutter so that the Even in that case, the positional relationship between the fins 30 and the rainwater flow direction is the same as in the case of FIG. 27. Therefore, the effect of providing the convex portions 50 to suppress foreign matter from getting caught on the fins 30 becomes more pronounced when the number of fins 30 is an odd number.

FIG. 28 is a front view of an upper unit 100b constituting another example of the drain of the embodiment. FIG. 29 is an enlarged view of a part of the upper unit 100b viewed diagonally from below. FIG. 30 is a left side view of the upper unit 100b. FIG. 31 is a bottom view of the upper unit 100b.

In the configuration of this example, unlike the configurations in FIGS. 22 to 26, a convex portion is not provided on the outer peripheral surface of the upper reduced diameter portion 14 of the upper unit 100b, but instead a portion of the lower surface of the upper flange 16 in the circumferential direction is provided. A downwardly protruding convex portion 51 having a protruding length of 1 mm or less and a diameter of 20 mm or less is provided. The convex portion 51 has a hemispherical shape. Thereby, the convex portion 51 is provided on a portion of the lower surface of the upper flange 16 in the circumferential direction. The convex portion 51 may have a cylindrical shape or a polygonal column shape such as a quadrangular column.

Similarly to the configurations of the above-described embodiments, the configuration of this example also prevents deterioration of the aesthetic appearance of the drain installed state, and allows the operator who installs the drain in the eave gutter 81 to properly rotate the drain at an appropriate rotation angle. It is easy to install in the same condition. For example, by using the convex portion 51 provided on the drain as a mark, a worker can easily install the drain in the eaves gutter at an appropriate rotation angle. Furthermore, since the convex portion 51 is provided at a position that is not visible when the drain is installed, it is possible to prevent the aesthetic appearance of the drain from being degraded. In this example, other configurations and operations are similar to those in FIGS. 22 to 26.

FIG. 32 is a front view of an upper unit 100c constituting another example of the drain of the embodiment. FIG. 33 is an enlarged view of a part of the upper unit 100c viewed diagonally from below. FIG. 34 is a left side view of the upper unit 100c. FIG. 35 is a bottom view of the upper unit 100c.

In the configuration of this example, unlike the configurations in FIGS. 22 to 26, on the outer circumferential surface of the upper reduced diameter portion 14 of the upper unit 100c, a digging depth is formed at the circumferential center position between two circumferentially adjacent fins. A recess 52 with a diameter of 1 mm or less and a diameter of 20 mm or less is provided. The recessed portion 52a is recessed toward the inner circumferential side, for example, in a hemispherical shape. Thereby, the recessed portion 52 is provided in a part of the outer circumferential surface of the upper reduced diameter portion 14 in the circumferential direction.

Similarly to the configurations of the above-described embodiments, the configuration of this example also prevents deterioration of the aesthetic appearance of the drain installed state, and allows a worker to easily install the drain in the eaves gutter with the appropriate rotation angle. It becomes easier. For example, by using the concave portion 52 provided in the drain as a mark, an operator can easily install the drain in the eaves gutter at an appropriate rotation angle. Furthermore, since the recess 52 is provided at a position that is not visible when the drain is installed, it is possible to prevent the appearance of the drain from deteriorating. In this example, other configurations and operations are similar to those in FIGS. 22 to 26.

FIG. 36 is an enlarged view of a part of the upper unit 100d constituting another example of the drain as viewed diagonally from below. FIG. 37 is a left side view of the upper unit 100d. FIG. 38 is a bottom view of the upper unit 100d.

In the configuration of this example, unlike the configurations in FIGS. 28 to 31, on the lower surface of the upper flange 16 of the upper unit 100d, a digging depth of 1 mm is formed at the center position in the circumferential direction between two circumferentially adjacent fins 30. Hereinafter, a recess 53 having a diameter of 20 mm or less is provided. The recess 53 is recessed toward the upper surface of the upper flange 16 in, for example, a hemispherical shape. Thereby, the recess 53 is provided in a part of the lower surface of the upper flange 16 in the circumferential direction.

Similarly to the configurations of the above-described embodiments, the configuration of this example also prevents deterioration of the aesthetic appearance of the drain installed state, and allows a worker to easily install the drain in the eaves gutter with the appropriate rotation angle. It becomes easier. In this example, other configurations and operations are similar to those in FIGS. 28 to 31.

In each of the embodiments described above, the drain is not limited to that used in the eave gutter drainage structure 80 having the nominal gutter 94 and elbows 97, 98 as shown in FIG. It may also be configured to be directly connected to.

10, 10a to 10d eave gutter drain (drain), 11 drain upper unit (upper unit), 11a inner cylinder, 13 male screw, 14 upper reduced diameter section, 14a outer peripheral wall surface, 15 rib group, 15a rib, 16 upper flange, 20 inflow opening, 30 fin, 31 protrusion, 32 notch, 40 inner tube, 41 funnel, 42 outward flange, 50, 51 convex portion, 52, 52a, 53 recess, 80 eaves gutter structure, 81 eaves gutter , 82 Bottom plate, 82a Opening, 83 Front wall, 84 Rear wall, 90 Lower drain unit (lower unit), 91 Outer cylinder, 91a Female thread, 92 Lower flange, 93 Step part, 93a Disc part, 94 Nominal gutter, 96 Downpipe, 97 Upstream elbow, 97a Large diameter tube section, 98 Downstream elbow, 100, 100a to 100d Drain upper unit (upper unit).

Claims (7)

An eaves gutter drain installed in the eaves gutter so as to pass through an opening for rainwater drainage provided in the bottom plate of the eaves gutter,
Equipped with a drain upper unit and a drain lower unit,
The lower drain unit includes a lower flange disposed on the lower surface of the bottom plate, an outer cylinder provided below the lower flange, and a lower condenser whose diameter decreases as it goes downward. having a diameter portion;
The upper drain unit includes an upper flange disposed on the upper surface of the bottom plate, an inner cylinder provided below the upper flange that guides rainwater downward, and a diameter that connects the upper flange and the inner cylinder. has an upper reduced diameter portion that reduces;
The outer circumferential wall surface of the upper reduced diameter portion is constituted by a curved surface concave toward the inside in the radial direction,
A rib protruding outward is disposed on at least a portion of the outer peripheral surface of the upper reduced diameter portion in the circumferential direction from the lower end to the upper end,
The rib extends in the vertical direction from the lower end to the upper end of the outer circumferential surface of the upper reduced diameter part in a side view.
Eave gutter drain. The eave gutter drain according to claim 1,
The radially outer end surface of the rib has an arc shape with a vertically intermediate portion concave toward the radially inward side.
Eave gutter drain. The eave gutter drain according to claim 1,
Fins are erected at multiple positions in the circumferential direction on the upper surface of the upper flange, and when the ribs are installed in the eaves gutter so as to be located furthest above the water in the eaves gutter, the most upstream end in the direction of rainwater flow. The angle formed by the fins arranged in the rainwater flow direction is approximately the maximum structural angle.
Eave gutter drain. An eaves gutter drain installed in the eaves gutter so as to pass through an opening for rainwater drainage provided in the bottom plate of the eaves gutter,
Equipped with a drain upper unit and a drain lower unit,
The lower drain unit includes a lower flange disposed on the lower surface of the bottom plate, an outer cylinder provided below the lower flange, and a lower condenser whose diameter decreases as it goes downward. having a diameter portion;
The upper drain unit includes an upper flange disposed on the upper surface of the bottom plate, an inner cylinder provided below the upper flange that guides rainwater downward, and a diameter that connects the upper flange and the inner cylinder. has an upper reduced diameter portion that reduces;
The outer circumferential wall surface of the upper reduced diameter portion is constituted by a curved surface concave toward the inside in the radial direction,
A protrusion or recess with a protrusion length or digging depth of 1 mm or less and a diameter of 20 mm or less is provided on the outer circumferential surface of the upper reduced diameter part or a part of the lower surface of the upper flange in the circumferential direction.
Eave gutter drain. In the eave gutter drain according to claim 4,
Fins are erected at a plurality of positions in the circumferential direction on the upper surface of the upper flange, and when installed in the eaves gutter so that the convex part or the recessed part is located furthest above the water in the eaves gutter, rainwater The angle formed by the fin disposed at the most upstream end in the flow direction and the rainwater flow direction is approximately the maximum structural angle.
Eave gutter drain. In the eaves gutter drain according to claim 3 or claim 5,
The number of fins is 3, 5, 7, or 9.
Eave gutter drain. The eaves gutter;
The eaves gutter drain according to claim 1 or claim 4,
Eave gutter structure.

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