JP7471623B2 - Cover material and gutter material - Google Patents

Description

The present invention relates to a cover member and gutter material that can be attached to the eaves gutters and interior gutters of buildings to prevent the gutters from clogging with fallen leaves and the like and ensure that rainwater is guided into the gutter material.

The roofs of buildings are provided with various gutters such as eaves gutters and interior gutters that serve as channels for carrying rainwater. To prevent fallen leaves and other objects from mixing with the rainwater and causing blockages in the gutters, a lid-like structure to keep fallen leaves out is often attached to the surface of the gutters, or a separate covering material is often provided.
For example, the eaves gutter 1 described in Patent Document 1 and the rain gutter 4 described in Patent Document 2 are flat devices, and their lid-like portion 25 and rain gutter cover are members that are installed almost horizontally. Also, the eaves roof material A that covers the eaves gutter G described in Patent Document 3 is a member that is installed at an angle. The lid portions in these documents 1 to 3 have holes that open toward the face plate and face upward.

Japanese Patent Application Laid-Open No. 10-148014 JP 2009-167776 A Japanese Patent Application Laid-Open No. 10-266476

However, if the holes (holes) formed in the structures of Patent Documents 1 to 3 are too small, rainwater will not fall easily due to surface tension, and if the size is not affected by surface tension, fallen leaves and other materials will inevitably flow in. In other words, in Patent Documents 1 and 2, the cover is installed almost horizontally, so if the width and diameter of the holes are small, rainwater will tend to stagnate due to surface tension and frictional resistance. In Patent Document 3, the cover is arranged at an angle, so the direction of the rainwater flow intersects with the vertical direction of the holes, making it difficult for the rainwater to flow down the holes. Also, if the hole width is small, rainwater will not fall easily due to surface tension, as in Patent Documents 1 and 2. Furthermore, making such holes large or forming many of them reduces the strength of the panel, so it is extremely difficult to set the width and diameter of the holes while adjusting the balance between these factors.

The present invention aims to propose a cover member and gutter material that can be attached to the eaves gutters and interior gutters of buildings to prevent the gutters from becoming clogged with fallen leaves and the like, while also ensuring that rainwater is guided into the gutter material and is not affected by contact angle or surface tension.

The present invention has been proposed in consideration of the above, and relates to a cover member which has a substantially planar cover portion and an attachment portion at at least one end, and is arranged at an incline on a gutter material having a drainage channel that is open at the top, wherein the cover portion has multiple stages in the inclination direction and multiple rows of drainage recesses in a direction perpendicular to the inclination direction, and the rows of drainage recesses on the lower stage are all arranged in a staggered pattern relative to the rows of drainage recesses on the upper stage, and each drainage recess has a guide portion which guides rainwater from the front side to the back side, and an inlet which opens in the depth direction, which is the thickness direction of the cover portion itself, and the guide portion has an inclined curved surface or a plurality of inclined flat surfaces toward the inlet, and the depth dimension of the guide portion is 3 to 5 mm.

Furthermore, the present invention also proposes a gutter material, characterized in that the cover member is arranged at an angle to an opening portion that opens upward of the gutter material.

The present invention also proposes a gutter material characterized in that the width of the drainage recesses in the row direction is twice the separation width between adjacent drainage recesses in a direction perpendicular to the inclination direction (= row direction) .

The cover member of the present invention has an inlet that opens in the depth direction (thickness direction) in each drainage recess, so that rainwater that reaches the inlet from the sloping guide portion toward the inlet can reliably fall toward the inside of the gutter material of the eaves gutter or inner gutter, preventing the gutter from becoming clogged with fallen leaves, etc.
In particular, since an inlet that opens in the depth direction is formed , rainwater can be introduced without the inlet being blocked by fallen leaves or the like.
Furthermore, the guide portion is an inclined curved surface or multiple inclined flat surfaces that extend toward the inlet, and its depth dimension is 3 to 5 mm, so that fallen leaves and the like will not enter regardless of the amount of rainwater, and the guide portion fulfills its role as an inlet without the surface tension of the rainwater acting on the inlet (opening edge) (forming a water film), and the rainwater flows gently (smoothly) along the inclined curved or inclined flat guide portion, so that the rainwater and the like can be introduced into the gutter material extremely quickly.
In addition, the cover portion has multiple stages in the inclination direction and multiple rows of drainage recesses in a direction perpendicular to the inclination direction, and the rows of drainage recesses on the lower stage are all arranged in a staggered pattern relative to the rows of drainage recesses on the upper stage. Therefore, the drainage recesses of the upper stage in the inclination direction are positioned below the water line spacing between adjacent drainage recesses in the row direction. As a result, rainwater that slips through the drainage recesses of the upper stage can be reliably collected in the drainage recesses of the upper stage, and rainwater can be more efficiently and reliably introduced into the inside of the gutter material on the back side ( below ) .

Furthermore, in the gutter material of the present invention, the cover member is arranged at an incline at the opening where the upper part of the gutter material opens , so that rainwater that reaches the inlet from the inclined guide portion can be reliably guided directly into the inside of the gutter material of the eaves gutter or inner gutter, preventing the gutter from becoming clogged with fallen leaves, etc.

Furthermore, if the row width of the drainage recesses is twice the separation width between adjacent drainage recesses in the row direction , the total width of adjacent drainage recesses in the row direction will reach two-thirds of the overall width, so that rainwater can be reliably guided into the gutter material.

FIG. 4 is a side cross-sectional view showing one example of installation of the cover member of the present invention. 1A is a plan view showing the cover portion of the first embodiment, FIG. 1B is a side cross-sectional view thereof, and FIG. 1C is an enlarged plan view of a drainage recess portion. 13A is a plan view showing a cover portion of a second embodiment, FIG. 13B is a side cross-sectional view thereof, and FIG. 13C is an enlarged plan view of a drainage recess portion. 13A is a plan view showing a cover portion of a third embodiment, and FIG. 13A is a plan view showing a cover portion of a fourth embodiment, and FIG. 13A is a plan view showing a cover portion of a fifth embodiment, FIG. 13B is a side cross-sectional view thereof, and FIG. 13C is an enlarged plan view of a drainage recess portion. 13A is a plan view showing the cover portion and the underwater mounting portion of the sixth embodiment, and FIG. 13B is a side cross-sectional view taken along line xx thereof.

The cover member of the present invention has a substantially planar cover portion and an attachment portion at at least one end, and is arranged at an incline on a gutter material having a drainage channel that is open at the top, wherein the cover portion has multiple stages in the inclination direction and multiple rows of drainage recesses in a direction perpendicular to the inclination direction, and the rows of drainage recesses on the lower stage are all arranged in a staggered pattern relative to the rows of drainage recesses on the upper stage, and each drainage recess has a guide portion in the form of an inclined curved surface or multiple inclined flat surfaces that guide rainwater from the front side to the back side, and an inlet that opens in the depth direction, which is the thickness direction of the cover portion itself, and the depth dimension of the guide portions is 3 to 5 mm.

The cover part of the covering material of the present invention corresponds to a portion that covers gutter materials such as eaves gutters and inner gutters, and the drainage recesses formed in the cover part are formed in multiple stages in the inclination direction and multiple rows in the direction perpendicular to the inclination direction, with the drainage recesses on the lower side all arranged in a staggered pattern relative to the drainage recesses on the upper side, and have a guide part with an inclined curved surface or multiple inclined flat surfaces that guides rainwater from the front side to the back side, and a depth dimension of 3 to 5 mm, and an inlet opening in the depth direction . Since this inlet is formed at the lowest end of each drainage recess, the guide part is inclined in the depth direction to guide rainwater.
As described above, the "depth direction" means the thickness direction of the cover portion itself, that is, the depth direction, and the introduction port opens in the depth direction.

Since this cover material is installed at an incline at the opening of the gutter material and the cover portion is arranged at an incline, it is desirable to arrange the drainage recess so that the guide portion is located on the above-water side and an inlet is formed at the below-water end, i.e., so that the inlet is directly facing the direction of the incline .
This drainage recess can be formed by combining slit processing corresponding to the inlet with press processing (processing to form a recess) that uses the slit as an edge, so that the inlet can be directly faced to the inclination direction by forming a slit width in a direction intersecting the inclination direction, and the desired guide portion and inlet can be formed. In particular, multiple stages of drainage recesses are formed in the inclination direction and multiple rows of drainage recesses are formed in a direction perpendicular to the inclination direction, and the rows of drainage recesses on the lower stage are all arranged in a staggered pattern relative to the rows of drainage recesses on the upper stage, so that the combination of the above-mentioned slit processing and press processing can be easily achieved, and rainwater can be efficiently guided.

In the following explanation, we will explain the arrangement of the drainage recess and the shape and configuration of the drainage recess itself in an embodiment in which the cover part is arranged at an incline, the guide part is located on the above-water side, the drainage recess is arranged so that an inlet is formed at the underwater end, and the inlet is formed directly facing the direction of the incline .

The inlet refers to a portion through which rainwater, etc. is introduced into the inside of the eaves gutter or inner gutter, and is open in the depth direction as described above. In the above-mentioned prior art patent documents, etc., a punched metal or the like that is open in the face plate direction and has holes formed facing upward is common, whereas the inlet in the present invention is formed so as to open in the depth direction and face to the side.
There is a suitable range for the depth and width of this inlet, which will be described later; if it is too small, surface tension will come into play and create a water film that will not be able to drain adequately, and if it is too large, a large amount of water will be drained, but fallen leaves, debris, etc. will tend to become clogged (and will be easily introduced into the gutter material).

The guide portion may be an inclined curved surface toward the inlet formed at the lowest end of the drainage recess, or may be composed of multiple inclined flat surfaces, and the shape in plan view may be a horizontally elongated rectangle or a horizontally elongated shape with the upper end corners of the opposing left and right sides formed into arcs, and is not particularly limited. Note that the "horizontally elongated" means that the dimension in the direction intersecting the flow direction (left and right direction) is long.
In order for the flowing rainwater to fall onto the inclined guide section and be collected at the inlet, the guide section needs to have a certain length and width. If the length and width is too small, the wetting phenomenon does not occur and the rainwater does not jump over the guide section and enter the inlet. For example, in a water spray test, it was confirmed that if the length and width is 6 mm, the water falls onto the guide section, collects at the inlet and is drained. In this way, if the length and width of the guide section in the flow direction is too narrow compared to the flow rate and flow velocity, the water will jump over, and the wider it is, the greater the rainwater collection effect.
On the other hand, the longer the guide section is, the less likely it is that rainwater will jump over the inlet and will collect at the inlet, but the area that each guide section occupies in the flow direction will be larger, limiting the number of inlets, and therefore the overall amount of drainage will decrease. Also, when the length and width of the guide section is wider, there is a problem that the possibility of fallen leaves and garbage getting into the guide section and piling up increases.

Furthermore, with regard to the width of these inlets and guides in the direction intersecting the flow direction (left-right direction), the larger the left-right width, the greater the amount of water discharged, but the greater the problem of clogging with fallen leaves, garbage, etc. Also, the smaller the width, the smaller the amount of water discharged and the greater the number of units required, which also creates problems with processing efficiency.
Furthermore, in order to guide (drain) all of the flowing rainwater into the inside of the gutter material, the inlets must be arranged in a staggered pattern on the surface, with the inlets on the upper and lower tiers overlapping.

The drainage recess having such a configuration can form the desired guide portion and inlet by simultaneously using a slit processing of the width dimension of the inlet and a press processing (processing to form a recess) with the slit as the bottom end. Therefore, this cover member is made of metal, synthetic resin, or other materials, but there is no particular limitation as long as the material can be processed as described above. For example, materials that are also used as horizontally laid exterior materials (roofing materials), typically known metal materials such as surface decorative steel sheets, laminated steel sheets, plated steel sheets, stainless steel sheets, aluminum alloy sheets, titanium alloy sheets, copper sheets, etc. with a thickness of about 0.4 to 1.6 mm can be used.

In this manner, the cover portion of the cover member in the present invention is provided with a plurality of drainage recesses, each of which has an inclined guide portion provided with an inlet opening in the depth direction at its underwater end.
When this cover member is used as a leaf catcher for gutters, the inlet is placed at the lower end of the guide section in the direction of water flow, and rainwater flowing from the upper side of the water in the direction of flow is dropped one level (lower) from the surface by utilizing the wetting phenomenon of the liquid and collected in the inlet. As the rainwater falls down the guide section, its flow speed increases and its vector is directed toward the inlet, so it is expected to drain more smoothly than the shape of the above-mentioned conventional technology in which holes are formed in the face plate direction.

In this drainage recess, an experiment was carried out based on the above-mentioned findings regarding the depth interval of the inlet, and it was confirmed that a depth interval of 3 to 5 mm is desirable.
It was confirmed that when the depth interval exceeds 5 mm, the intrusion of fallen leaves, garbage, etc. occurs along with the rainwater, and when the depth interval is less than 3 mm, the surface tension of the rainwater acts on the inlet (opening edge) (forming a water film), it does not function as an inlet, and the rainwater cannot be introduced quickly and flows down the surface of the cover (introduction of rainwater into the gutter material is impaired). In other words, by forming the inlet depth interval at 3 to 5 mm, it is possible to prevent the intrusion of fallen leaves, garbage, etc. and to quickly introduce rainwater into the flow channel of the gutter material.
Furthermore, fallen leaves come in a variety of shapes and sizes depending on the variety and growth stage, so it is not possible to clearly determine the depth interval of the inlet.

Furthermore, an examination of the experimental results revealed that it is desirable for the left-right width of drainage recesses to be twice the separation width between adjacent drainage recesses in the direction intersecting the flow direction (left-right direction). Under these conditions, regardless of the left-right width of the drainage recesses, the total left-right width of the inlets of all drainage recesses is two-thirds of the overall width, and because there are multiple stages of drainage recesses in the flow direction, rainwater flowing down in the flow direction can be almost reliably introduced from the inlets into the inside of the gutter material.

Furthermore, when the drainage recesses are arranged in a staggered pattern along the water gradient direction, the drainage recess of the relevant stage is positioned on the water downstream side of the separation width between adjacent drainage recesses in the left-right direction in the upper stage in the flow direction, so that rainwater that has slipped through the drainage recesses of the upper stage can be reliably collected in the drainage recess of the relevant stage, and rainwater can be more reliably introduced into the inside of the gutter material.

In addition, as shown in the illustrated embodiment described below, water diversion ribs that protrude toward the surface can be provided between adjacent drainage recesses in the left-right direction to more reliably guide rainwater to the drainage recesses.

Next, based on the above findings, experiments were carried out regarding the length and width of the guide portion in the flow direction, and the left and right widths of the inlet and guide portion.
Regarding the former, a water sprinkling test confirmed that drainage was possible even with a water depth of 6 to 10 mm.
In other words, when considering the number of steps in the flow direction, which also depends on the width of the cover part (the size of the gutter material), it was confirmed that when the step pitch is set to 25 mm, the length and width of this guide part should be at least 6 to 10 mm, and should not exceed the step pitch (25 mm) (Examples 1 to 3 described below).
The step pitch may be set to a large value depending on the width of the cover (the size of the gutter material). If the step pitch is too small, the density of the drainage recesses will be too high, which will require a lot of work to process. However, if the step pitch is set to a value larger than the above (25 mm), there is a concern that rainwater may run diagonally due to the influence of the wind. Even in this case, it has been confirmed that rainwater can be reliably collected by providing the above-mentioned water diversion ribs.

Regarding the latter, it was confirmed that the left-right width needs to be 30 mm or more.
In other words, if it is less than this, the overlap between the upper and lower inlet ports will be small, and introduction into the inside of the gutter material will be impaired. The longer it is, the greater the amount of drainage will be, but it has been confirmed that at 80 mm, for example, leaves become more likely to get stuck in the gutter material, and the possibility of them penetrating into the gutter material increases, so it has been confirmed that it is desirable for the left-right width not to exceed 80 mm.
Also, if the width of the inlet is too large, the strength of the face plate decreases, and it may not be able to withstand the load of snow, for example. When widths of 30 to 80 mm were examined, a test was conducted in which leaves were left in the guide section and then wind was blown onto it to measure the amount of leaves remaining. The result was that the amount of leaves remaining was less with a width of 30 mm than with a width of 80 mm. There was no particular problem with 80 mm, but the longer the width, the higher the possibility of leaves entering and piling up, so it is preferable that the length be at least 30 mm and no more than 80 mm.

Additionally, the holes formed in the face plate direction in the aforementioned conventional documents open parallel to the flow direction, while the inlet in the cover member of the present invention opens in the depth direction directly opposite the flow direction. Therefore, surface tension is more likely to act on holes that open parallel to the face plate direction as in the conventional documents, while gravity also acts on the inlet in the present invention that opens in the depth direction (vertical direction), so it is presumed that surface tension is less likely to act on the inlet than on holes that open parallel to the flow direction.

The cover member of the present invention, configured in this manner, has an inlet that opens in the depth direction (vertical direction) at the water lower end of each drainage recess, so that rainwater that reaches the inlet from the sloping guide portion can fall reliably and be guided inside the gutter material of the eaves gutter or inner gutter directly without ``flowing down'' the back side, thereby preventing the gutter from becoming clogged with fallen leaves, etc.
Furthermore, the drainage recess in the present invention has a guide portion formed in an inclined shape, so that rainwater and other water can flow down from this guide portion to the inlet and be introduced into the gutter material.
Although fallen leaves and the like tend to accumulate in the concave guide sections, rainwater and other water can pass through them and fall from the inlet. In contrast, in the case of holes formed in the direction of the face plate in the conventional literature, the holes are easily clogged by fallen leaves and the like.

The cover member of the present invention is a member that is attached to cover the surface of the gutter material, but there is no particular limitation on the configuration of the attachment part provided at at least one end, and it is desirable to provide an attachment part on the above-water side or below-water side edge, or on both edges, as in the illustrated example described below. Furthermore, the attachment part may be anything that can be attached using a known connection means, and the attachment target is not limited to the gutter material, and it may be attached to the base material that constitutes the roof surface.

As mentioned above, multiple drainage recesses are formed in the cover portion in the flow direction and in a direction intersecting the flow direction (left-right direction). Naturally, if the formation density of the drainage recesses (inlets) is too high, rainwater will be introduced quickly but the strength will decrease, and if the formation density of the drainage recesses (inlets) is too low, the strength will not decrease but the introduction of rainwater may be hindered.
However, as mentioned above, the drainage recess is composed of a vertical inlet and a three-dimensionally molded guide portion, so there is less reduction in surface strength compared to cases where multiple holes are formed in the face plate direction as in the above-mentioned conventional documents. Also, since the guide portion can be made larger than the inlet, it is less susceptible to the effects of contact angle. Furthermore, compared to holes that open parallel to the face plate direction as in the conventional documents, an inlet that opens in the depth direction (vertical direction) is less susceptible to the effects of surface tension due to the effects of gravity, making it easier to introduce rainwater into the gutter material.

As mentioned above, this cover member can be made of metal, synthetic resin, or other materials, but we used a long strip-shaped metal plate, similar to the material used for horizontal exterior coverings (roofing materials), as the raw material, and we investigated and considered the spacing of the drainage recesses (inlet ports) and the size of the drainage recesses (guide portions) through experiments. We also investigated and considered a form in which the drainage recesses are provided exclusively in a straight line in the direction intersecting the flow direction (left-right direction), and exclusively in a staggered pattern in the flow direction.

In addition, in the above-mentioned experiment, tap water calculated from the maximum rainfall in the area was supplied as rainwater, and compared to the comparative example in which horizontal punched holes were provided, rainwater was able to be introduced efficiently under almost all conditions, and no "trickling" occurred.
However, as mentioned above, in this experiment, a long strip-shaped metal plate similar to the material used for horizontally laid exterior materials (roofing materials) was used as the raw material for the cover member, but it is expected that the above-mentioned conditions can be more widely alleviated by changing the raw material to a high-strength material.

1 shows one example of the application of the cover member 1 of the present invention, in which the cover member 1 is attached at an angle to cover an eaves gutter 2. The above-water mounting portion 12 of the cover member 1 is screwed together with a retaining clip 4 (screw 4b) to the back side of the horizontal roofing exterior material 3 on the eaves side, and the below-water mounting portion 13 is engaged in an overhanging manner with the side end 23 on the eaves side of the eaves gutter 2.
The cover member 1 in this construction example is a formed body of a metal plate material similar to the horizontal roofing exterior material 3, and the cover portion 11 located in the center is shown diagrammatically in the bare surface, but as described above, a slit is made to the width dimension of the inlet, and then a press work is performed to make this the lower end, forming the guide portion 102 and the inlet 101, thereby forming the drainage recess 10. The configurations of this cover portion 11 and the drainage recess 10 will be described in the first to fourth examples in Figures 2 to 5 described later.

In addition, the building in this construction example has a roofing material 6 made of cemented excavated wood boards or the like and a support material 5, which is a through material, laid on an H-shaped structure 7 extending in the inclined direction, and a horizontal roofing exterior material 3 attached via a waterproof sheet 6b to the outside of the roofing material 6 and the support material 5. A backing material 3b is attached to the back side of the horizontal roofing exterior material 3, and a backup material 3c is further arranged on the back side, and a stepped exterior surface is constructed with retaining clips 4 fixed to the support material 5. Note that the retaining clip 4' that holds the horizontal roofing exterior material 3 on the eaves side is approximately flat, unlike the other retaining clips 4, and is fixed to the support material 5 with screws 4b.
In addition, a structural material 7B extending vertically is arranged at the eaves end of the H-shaped structure 7, and a structural material 7C extending horizontally is arranged at its lower end. Wall exterior material 8A is arranged on the outside of the structural material 7B, and a fitting material 8B is arranged at the lower end. Eaves ceiling material 9A is arranged on the outside (lower side) of the structural material 7C.

In the first to fourth examples described below, the depth interval between the inlets 101a to 101d of the drainage recesses 10a to 10d is 3 to 5 mm, and the left-right width of the drainage recesses 10a to 10d is twice the separation width between adjacent drainage recesses 10a to 10d in the left-right direction, which is exactly the same. Also, in the first to third examples, the interval between the inlets 101a to 101c of the drainage recesses 10a to 10c adjacent in the flow direction is 5/6 of the left-right width of the inlets 101a to 101c.

The cover part 11A of the first embodiment shown in Figure 2 has a total of 20 groups of drainage recesses 10a, with five rows in the flow direction (up and down in the drawing) and four rows in the direction intersecting the flow direction (left and right in the drawing), and each drainage recess 10a has a guide portion 102a that guides rainwater from the front side to the back side, and an inlet 101a that opens in the depth direction directly facing the flow direction.
The drain recess 10a of the first embodiment has a horizontally long shape in plan view with the upper corners of the opposing left and right sides formed in an arc shape, as shown in an enlarged view in Fig. 2(c), and is formed by simultaneously processing a slit having the width dimension of the inlet 101a and pressing the slit into the lower end. In the press processing, a curved mold is used as a male mold that is faced from the front side, and the guide portion 102a is formed in the shape of an inclined curved surface toward the inlet 101a formed at the water bottom end.

The cover part 11B of the second embodiment shown in Figure 3 has a total of 20 groups of drainage recesses 10b, with five rows in the flow direction (up and down in the drawing) and four rows in the direction intersecting the flow direction (left and right in the drawing), and each drainage recess 10b has a guide portion 102b that guides rainwater from the front side to the back side, and an inlet 101b that opens in the depth direction directly facing the flow direction.
The drain recess 10b of the second embodiment has a horizontally elongated rectangular shape in plan view as shown in Fig. 3(c) and is formed by simultaneously forming a slit with the width dimension of the inlet 101b and pressing the slit as the lower end. In the press working, a polygonal mold is used as a male mold that faces from the front side, and the formed guide portion 102b is formed into a plurality of inclined planes toward the inlet 101b formed at the water lower end.

In these first and second embodiments, as shown in Figures 2(b) and 3(b), the inclination angle of the guide parts 102a and 102b is steep, so the rainwater collection effect is less than that of the third embodiment described later, but the rainwater can be reliably guided from these guide parts 102a and 102b to the inlets 101a and 101b and introduced into the gutter material (not shown).

The cover part 11C of the third embodiment shown in Figure 4 has a total of 20 groups of drainage recesses 10c, with five rows in the flow direction (up and down in the drawing) and four rows in the direction intersecting the flow direction (left and right in the drawing), and each drainage recess 10c has a guide portion 102c that guides rainwater from the front side to the back side, and an inlet 101c that opens in the depth direction directly facing the flow direction.
The drain recess 10c of the third embodiment has a planar shape similar to that of the first embodiment, with the upper corners facing the left and right sides formed in an arc shape (however, the dimension in the flow direction is about twice as large as that of the first embodiment), and is formed by simultaneously processing a slit with the width of the inlet 101c and pressing it as the lower end. In the press processing, a curved mold (however, the dimension in the flow direction is about twice as large as that of the male mold used in the first embodiment) is used as a male mold that faces from the front side, and the formed guide portion 102c is formed in the shape of an inclined curved surface toward the inlet 101c formed at the water bottom end.

In this third embodiment, as shown in FIG. 4(b), the inclination angle of the guide portion 102c is formed gently, so that although the guide (flow) speed of rainwater is slower than in the first and second embodiments, the guide portion 102c, which is about twice as wide, can collect a larger amount of rainwater and guide it to the inlet 101c. Although the guide portion 102c is formed gently as described above, the height difference allows the rainwater to flow down to the lowest inlet 101c.

The cover part 11D of the fourth embodiment shown in Figure 5 has a total of 20 groups of drainage recesses 10d, with five rows in the flow direction (up and down in the drawing) and four rows in the direction intersecting the flow direction (left and right in the drawing), and each drainage recess 10d has a guide portion 102d that guides rainwater from the front side to the back side, and an inlet 101d that opens in the depth direction directly facing the flow direction.
The drainage recess 10d of the fourth embodiment is different from the first to third embodiments in that the interval between the inlet ports 101d of adjacent drainage recesses 10d in the flow direction is set to a step pitch that is wider than the left-right width of the inlet ports 101d. However, the shape of the drainage recess 10d itself is almost the same as that of the drainage recess 10c of the third embodiment. In addition, in the fourth embodiment, a water dividing rib 14 that protrudes toward the surface is provided between adjacent drainage recesses 10d, 10d in the left-right direction.

In this fourth embodiment, a drainage recess 10d similar to the drainage recess 10c in the third embodiment is provided, so a large amount of rainwater can be collected and guided (flowing down) to the inlet 101d, just like in the third embodiment. In addition, in this fourth embodiment, the step pitch of the inlet 101d is made wider than in the third embodiment, so there was concern that rainwater would run diagonally due to the influence of the wind, but by providing a water diversion rib 14, it was confirmed that the collected rainwater can be reliably guided to the adjacent drainage recesses 10d, 10d.

The cover part 11E of the fifth embodiment shown in Figure 6 has a total of 30 groups of drainage recesses 10e, with five rows in the flow direction (up and down in the drawing) and six rows in the direction intersecting the flow direction (left and right in the drawing), and each drainage recess 10e has a guide portion 102e that guides rainwater from the front side to the back side, and an inlet 101e that opens in the depth direction directly facing the flow direction.
As shown enlarged in Figure 6 (c), the drainage recess 10e of this fifth embodiment has a planar shape that is oblong with the opposing upper end corners on the left and right sides formed into an arc shape, and is formed by simultaneously machining a slit of the width dimension of the inlet 101e and pressing it as the lower end.The difference from the second embodiment (10b) is that the base end of the guide portion 102e is formed into an inverted mountain shape rather than a mountain shape.

In this fifth embodiment, a drainage recess 10e is provided that is similar in shape to the drainage recess 10b in the second embodiment, so that a large amount of rainwater can be collected and guided (flowed down) to the inlet 101e, just like in the second embodiment. It has been confirmed that in this fifth embodiment, rainwater can be guided more reliably to the guide portion 102e.

The cover part 11F of the sixth embodiment shown in Figure 7 has a total of 36 groups of drainage recesses 10f, with six rows in the flow direction (up and down in the drawing) and six columns in the direction intersecting the flow direction (left and right in the drawing), and each drainage recess 10f has a guide portion 102f that guides rainwater from the front side to the back side, and an inlet 101f that opens in the depth direction directly facing the flow direction.
The drainage recess 10f of this sixth embodiment is substantially similar to the fifth embodiment (10e) of Figure 6, in that its planar shape is elongated horizontally with the opposing upper corners on the left and right sides formed into an arc shape, and is formed by simultaneously slitting the width of the inlet 101f and pressing it to form the lower end.What differs from the fifth embodiment (10e) is that the drainage recess 10f is more elongated horizontally, and a drainage portion 103f that is bent substantially downward is formed at the tip of the guide portion 102f.

In this sixth embodiment, a drainage recess 10f substantially similar to that in the fifth embodiment (10e) is provided, and therefore it has substantially the same water-conducting effect as the fifth embodiment. In particular, a substantially hanging drainage portion 103f is formed, so that rainwater can more reliably fall to the back side (eaves gutter 2).
In the sixth embodiment, the cover portion 11F has a continuous eaves-side drain groove 131f with a concave cross section at the bottom end (the boundary between the cover portion 11F and the bottom mounting portion 13F) in the length direction (horizontal direction), and the eaves-side drain groove 131f has a plurality of generally circular eaves-side water guide holes 132f at a predetermined interval. The eaves-side drain groove 131f is formed in a valley-shaped bottom, and is configured to reliably collect rainwater. Therefore, even if there is rainwater that cannot fall (cannot be collected) to the back side (eaves gutter 2) in the drainage recess 10f, the rainwater can be reliably collected by the eaves-side drain groove 131f and the eaves-side water guide holes 132f and dropped to the back side (eaves gutter 2).

REFERENCE SIGNS LIST 1 Cover member 10, 10a to 10e Drainage recess 101, 101a to 101f Inlet 102, 102a to 102f Guide portion 11, 11A to 11F Cover portion 12 Above-water mounting portion 13, 13F Below-water mounting portion 14 Water distribution rib 2 Eaves gutter 3 Horizontal roofing exterior material 4, 4' Retaining clip 5 Support material 6 Sheathing board 7 H-shaped structure 7B, 7C Structural material

Claims (3)

A cover member having a substantially planar cover portion and an attachment portion at least at one end, the cover member being disposed at an incline on a gutter material having a drainage channel that is open at the top,
The cover member is characterized in that multiple stages in the inclination direction and multiple rows of drainage recesses in a direction perpendicular to the inclination direction are formed in the cover portion, the rows of drainage recesses on the lower side are all arranged in a staggered pattern relative to the rows of drainage recesses on the upper side, and each drainage recess has a guide portion that guides rainwater from the front side to the back side, and an inlet that opens in the depth direction, which is the thickness direction of the cover portion itself, the guide portion having an inclined curved surface or multiple inclined flat surfaces toward the inlet, and a depth dimension of 3 to 5 mm. A gutter material characterized in that the cover member according to claim 1 is arranged at an angle to an opening portion of the gutter material that opens upward. The gutter material according to claim 2, characterized in that the width of the drainage recesses in the row direction is twice the distance between adjacent drainage recesses in the direction perpendicular to the inclination direction.

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