Method for manufacturing the cover member

Abstract

To provide a cover member and gutter material that can be attached to eave gutters and inner gutters of buildings to prevent gutter clogging due to fallen leaves, etc. and to reliably introduce rainwater into the gutter material.SOLUTION: The present invention relates to a cover member 1 comprising a substantially flat cover portion 11 and mounting portions 12,13 at least at one end, in which the cover portion 11 comprises a plurality of drainage recesses 10 in multiple stages in the inclined direction and in multiple rows in the direction orthogonal to the inclined direction, the drainage recesses 10 on the lower side being all arranged in a staggered manner in relation to the drainage recesses 10 on the upper side. Each drainage recess 10 comprises a guiding portion 102 that leads rainwater from the surface side to the back side and an inlet 101 that opens in the depth direction that is the direction of the thickness of the cover section itself. The guiding portion 102 has a sloping shape formed by slitting-work corresponding to the introduction opening 101 and press-working for forming the slit as an end edge, with a depth dimension of 3 to 5 mm.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention is attached to the eaves gutters and interior gutters of buildings to prevent the gutters from being clogged with fallen leaves and the like, and to ensure that rainwater is guided into the gutters. Method for manufacturing the cover member Regarding. [Background technology]

[0002] On the roofs of buildings, various gutters such as eaves gutters and interior gutters are installed as channels for carrying rainwater. To prevent fallen leaves and other debris from mixing with the rainwater and blocking these gutters, the gutters are often fitted with a leaf-proof lid structure or a separate cover material. 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 portions 25 and rain gutter covers are members that are installed almost horizontally. Also, the eaves edge 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. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-148014 [Patent Document 2] Japanese Patent Application Laid-Open No. 2009-167776 [Patent Document 3] Japanese Patent Application Publication No. 10-266476 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0004] However, the holes (or apertures) formed in the structures described in Patent Documents 1 to 3 presented the problem that if they were too small, rainwater would not fall easily due to surface tension and other factors, while if they were too large to be affected by surface tension and other factors, fallen leaves and other debris would inevitably flow in. In Patent Documents 1 and 2, the cover was installed nearly horizontally, so if the width and diameter of the apertures were small, rainwater would easily stagnate due to surface tension and frictional resistance. Furthermore, in Patent Document 3, the cover was arranged at an angle, so the direction of rainwater flow intersected with the vertical direction of the apertures, making it difficult for rainwater to flow down the apertures. Furthermore, similar to Patent Documents 1 and 2, if the aperture width was small, rainwater would not fall easily due to surface tension. Furthermore, forming such large or numerous apertures would weaken the strength of the face plate, making it extremely difficult to set the aperture width and diameter while balancing these factors.

[0005] Therefore, the present invention is attached to the eaves gutters and interior gutters of buildings to prevent the gutters from being clogged with fallen leaves and the like, and can reliably guide rainwater into the gutters, without being affected by contact angle or surface tension. Method for manufacturing the cover member The purpose is to propose the following. [Means for solving the problem]

[0006] The present invention has been proposed in view of the above, and provides a cover member that has a substantially planar cover portion and an attachment portion at least at one end, and is disposed at an angle on a gutter member that has a drainage channel that is open at the top. Manufacturing method The cover portion is formed with a plurality of stages in the inclined direction and a plurality of rows in the direction perpendicular to the inclined direction, and 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, and the guide portion After forming a notch corresponding to the inlet by slit processing, a press process is performed to form a depression from above on the water-surface side of the formed notch, thereby forming a recessed curved surface with a depth of 3 to 5 mm. Characterized by Method for manufacturing the cover member It is related to. [Effects of the Invention]

[0009] Cover member of the present invention Manufacturing method teeth, As a guide portion, a notch corresponding to the inlet is formed by slit processing, and then a press process is performed to recess the above-water side of the formed notch from above, forming a recessed curved surface with a depth (thickness) of 3 to 5 mm.Therefore, rainwater reaching the inlet from the inclined guide part toward the inlet can be reliably dropped and introduced into the inside of the gutter material of the eaves gutter or the inner gutter, and clogging of the gutter by fallen leaves or the like can be prevented. In particular, since an inlet opening 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 inclined, with a slit corresponding to the inlet and press-processed to use it as the edge, and its depth is 3 to 5 mm, so regardless of the amount of rainwater, fallen leaves and the like cannot enter, and the surface tension of the rainwater does not act on the inlet (opening edge) (forming a water film), so it fulfills its role as an inlet, and the rainwater flows gently (smoothly) along the inclined guide portion, allowing the rainwater and the like to be introduced into the gutter material extremely quickly. In addition, the cover portion has multiple rows of drainage recesses formed in the inclined direction and multiple rows of drainage recesses in a direction perpendicular to the inclined direction, and 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.As a result, the drainage recesses of the corresponding row are positioned below the waterline of the spacing between adjacent drainage recesses in the row direction on the upper side in the inclined direction.As a result, even if rainwater slips through between the drainage recesses of the upper row, it can be reliably collected in the drainage recess of the corresponding row, and the rainwater flows gently (smoothly) along the inclined guiding portions of each drainage recess, allowing the rainwater to be more efficiently and reliably introduced into the interior of the gutter material below. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 2 is a side cross-sectional view showing one example of installation of the cover member of the present invention. [Figure 2] 1A is a plan view showing the cover part of Example 1, FIG. 1B is a side cross-sectional view thereof, and FIG. 1C is an enlarged plan view of a drainage recess part. [Figure 3] 10(a) is a plan view showing the cover part of Example 2, (b) is a side cross-sectional view thereof, and (c) is an enlarged plan view of the drainage recess part. [Figure 4] FIG. 10(a) is a plan view showing a cover part of Example 3, and FIG. [Figure 5]FIG. 10(a) is a plan view showing the cover part of Example 4, and FIG. [Figure 6] FIG. 10(a) is a plan view showing the cover part of Example 5, (b) is a side cross-sectional view thereof, and (c) is an enlarged plan view of the drainage recess. [Figure 7] 10(a) is a plan view showing the cover portion and the underwater mounting portion of the cover member of Example 6, and FIG. 10(b) is a side cross-sectional view taken along line xx. DETAILED DESCRIPTION OF THE INVENTION

[0013] Cover member of the present invention Manufacturing method The cover member has a substantially flat cover portion and an attachment portion at least at one end, and is disposed at an angle on a gutter member having a drainage channel that is open at the top. Manufacturing method The cover portion is formed with a plurality of stages in the inclined direction and a plurality of rows in the direction perpendicular to the inclined direction, and 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, and the guide portion After forming a notch corresponding to the inlet by slit processing, a press process is performed to form a depression from above on the water-surface side of the formed notch, thereby forming a recessed curved surface with a depth of 3 to 5 mm. It is characterized by:

[0014] The present invention in The cover portion of the cover member corresponds to the portion that covers guttering materials such as eaves gutters and interior gutters, and the drainage recesses formed in the cover portion have a guide portion that guides rainwater from the front side to the back side, and an inlet that opens in the depth direction. This inlet is formed at the lowest end of each drainage recess, so the guide portion is inclined in the depth direction to guide rainwater. As mentioned 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.

[0015] Since this cover member 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 underwater end, i.e., so that the inlet is directly facing the inclined direction. This drainage recess is formed by a combination of slit processing corresponding to the inlet and press processing (processing to form a recess) that uses the slit as an edge, so that by forming the slit width in a direction intersecting the inclination direction, the inlet can be positioned directly in the inclination direction, and the desired guide portion and inlet can be formed. In particular, multiple rows of drainage recesses are formed 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 side are all arranged in a staggered pattern relative to the rows of drainage recesses on the upper side, so that the combination of the above-mentioned slit processing and press processing can be easily achieved, and rainwater can be efficiently guided.

[0016] In the following explanation, we will explain the arrangement configuration of the drainage recess and the shape configuration of the drainage recess itself in a configuration in which the cover portion is arranged at an incline, the guide portion 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 so that it faces directly in the direction of the incline.

[0017] The inlet refers to the portion through which rainwater and the like is introduced into the eaves gutter or inner gutter, and is open in the depth direction as described above. In the above-mentioned prior art patent documents, perforated metal structures that open toward the face plate and have holes facing upward are 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, but if it is too small, surface tension will come into play and create a water film that will not be able to drain sufficiently, and if it is too large, although the amount of drainage will increase, fallen leaves and debris will easily become clogged (and will be more likely to be introduced into the gutter material).

[0018] The guide portion may be an inclined curved surface facing the inlet port formed at the bottom of the drainage recess, or may be made up of multiple inclined flat surfaces, and its shape in plan view may be a horizontally elongated rectangle or a horizontally elongated shape with opposing upper corners formed in an arc shape, and is not particularly limited. Note that the term "horizontally elongated" means that the dimension in the direction intersecting the flow direction (left-right direction) is long. In order for flowing rainwater to fall onto the inclined guide section and collect at the inlet, the guide section needs to have a certain length and width. If the length and width are too small, wetting will not occur and the rainwater will skip over the guide section and not enter the inlet. For example, in a water spray test, it was confirmed that if the length and width is 6 mm, water will fall onto the guide section, collect at the inlet and be drained away. 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 velocity, the water will skip over it, and a wider length will have a greater effect on capturing rainwater. On the other hand, the longer the guide section, the less likely it is that rainwater will jump over the inlet and collect at the inlet, but the area that each guide section occupies in the flow direction becomes larger, limiting the number of inlets, which results in a decrease in the overall drainage volume.In addition, when the length and width of the guide section become wider, there is also the problem that fallen leaves and garbage are more likely to get into the guide section and accumulate.

[0019] Furthermore, with regard to the width of these inlets and guide parts in the direction crossing the flow direction (left-right direction), the larger the left-right width, the greater the amount of water discharged, but there is a problem that they are more likely to become clogged with fallen leaves, garbage, etc. Also, the smaller the width, the smaller the amount of water discharged and the more units that need to be installed, which also causes problems with processing efficiency. In addition, in order to introduce (drain) all of the flowing rainwater into the inside of the gutter material, the inlets must be arranged in a staggered pattern within the surface, with the inlets on the upper and lower levels overlapping.

[0020] The drainage recess having such a configuration can form the desired guide portion and inlet by simultaneously using a slit with the width dimension of the inlet and a press process (process for forming a recess) with the slit at the bottom. Therefore, this cover member is made of metal, synthetic resin, or other material, but is not particularly limited as long as it can be processed as described above. For example, materials that are also used for horizontally laid exterior materials (roofing materials), typically known metal materials such as surface-decorated steel sheets, laminated steel sheets, plated steel sheets, stainless steel sheets, aluminum alloy sheets, titanium alloy sheets, and copper sheets, each having a thickness of about 0.4 to 1.6 mm, can be used.

[0021] In this way, the cover portion of the cover member of 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 the water lower end. When this cover member is used as a leaf catcher for gutters, etc., 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 flow direction is dropped one level (lower) from the surface by utilizing the wetting phenomenon of liquid and collected in the inlet. As the rainwater falls down the guide section, its flow velocity increases and its vector is directed towards the inlet, so it is expected to drain more smoothly than the previously mentioned conventional technology in which holes are formed in the direction of the face plate.

[0022] In this drainage recess, an experiment was carried out based on the above-mentioned findings regarding the depth interval of the inlet port, 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, fallen leaves, debris, etc. enter 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), preventing it from functioning as an inlet, and the rainwater cannot be introduced quickly and flows down the surface of the cover (impairing the introduction of rainwater into the gutter material). In other words, by forming the depth interval of the inlet at 3 to 5 mm, fallen leaves, debris, etc. can be prevented from entering, and rainwater can be introduced quickly 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.

[0023] Furthermore, an examination of the experimental results revealed that it is desirable for the width of the drainage recesses to be twice the distance between adjacent drainage recesses in the direction intersecting the flow direction (left-right direction).Under these conditions, regardless of the width of the drainage recesses, the total 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 the flow direction can be almost reliably introduced from the inlets into the inside of the gutter material.

[0024] Furthermore, when the drainage recesses are arranged in a staggered pattern along the water gradient direction, the drainage recess of the relevant tier is positioned on the water downstream side of the separation width between adjacent drainage recesses in the left-right direction on the upper tier in the flow direction, so that rainwater that slips through the drainage recesses of the upper tier can be reliably collected in the drainage recess of the relevant tier, and rainwater can be more reliably introduced into the inside of the gutter material.

[0025] Furthermore, as shown in the illustrated embodiment described below, water diversion ribs that protrude toward the surface may be provided at the intervals between adjacent drainage recesses in the left-right direction, so that rainwater can be more reliably guided to the drainage recesses.

[0026] Next, based on the above findings, experiments were conducted on 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 spray 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, it also depends on the width of the cover part (the size of the gutter material), and 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 larger depending on the width of the cover (the size of the gutter material). This is because if the step pitch is too small, the density of the drainage recesses will be too high, which will require more processing time. However, if the step pitch is set larger than the above value (25 mm), there is a concern that rainwater will 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 aforementioned water distribution ribs.

[0027] Regarding the latter, it was confirmed that the width from side to side must be at least 30 mm. In other words, if it is less than this, the overlap between the upper and lower inlet ports will be small, and the introduction into the inside of the gutter material will be impaired.The longer it is, the greater the amount of drainage, but it has been confirmed that at 80 mm, for example, fallen leaves become more likely to get stuck, and the possibility of them entering the gutter material also increases, so it has been confirmed that it is desirable for the left and right width not to exceed 80 mm. Furthermore, if the width of the inlet is too large, the strength of the faceplate will decrease, and it may not be able to withstand the load of snow, for example. When widths between 30 and 80 mm were examined, tests were conducted in which leaves were left trapped in the guide section and then wind was blown onto them to measure the amount of leaves remaining. Results showed that the 30 mm width left less leaves remaining than the 80 mm width. While the 80 mm width did not pose any particular problems, the longer the length, the greater the possibility of leaves entering and piling up, so it is preferable for the length to be at least 30 mm and no more than 80 mm.

[0028] In addition, the holes formed in the face plate direction in the above-mentioned prior art documents are opened parallel to the flow direction, in Since the inlet in the cover member opens in the depth direction directly opposite the flow direction, surface tension is likely to act in holes that open parallel to the face plate direction as in the prior art, but since gravity also acts on the inlet in the present invention that opens in the depth direction (vertical direction), it is presumed that surface tension is less likely to act than in holes that open at least parallel to the flow direction.

[0029] The present invention thus constructed in The cover member has an inlet that opens in the depth direction (vertical direction) at the water bottom end of each drainage recess, so that rainwater that reaches the inlet from the sloping guide part can fall reliably without ``flowing down'' the back side and can be introduced into the gutter material of the eaves gutter or inner gutter, preventing the gutter from clogging with fallen leaves, etc. Furthermore, the drainage recess in the present invention has a guide portion formed in an inclined shape, so that water such as rainwater can flow down from this guide portion to the inlet and be introduced into the gutter material. Although fallen leaves and other debris tend to accumulate in the recessed guide sections, rainwater and other water can pass through them and fall through the inlet. In contrast, in the case of holes formed in the direction of the face plate, as in the conventional literature, the holes are easily clogged by fallen leaves and other debris.

[0030] Furthermore, the present invention inThe cover member is attached to cover the surface of the gutter material, but there are no particular restrictions on the configuration of the attachment part provided at at least one end, and it is desirable to provide an attachment part on the edge above the water or below the water, or on both edges, as in the illustrated example described below. Furthermore, the attachment part may be any part that can be attached using known connecting means, and the attachment target is not limited to the gutter material, but may also be attached to the base material that makes up the roof surface.

[0031] As mentioned above, multiple drainage recesses are formed in this cover portion in the flow direction and in a direction intersecting the flow direction (left and right direction). Naturally, if the formation density of the drainage recesses (inlets) is too high, rainwater will be introduced quickly but the strength will be reduced, and if the formation density of the drainage recesses (inlets) is too low, the strength will not be reduced but the introduction of rainwater may be hindered. However, as mentioned above, the drainage recess consists of a vertical inlet and a three-dimensionally formed guide portion, so the strength of the face plate is less reduced compared to cases where multiple holes are formed in the face plate direction, as in the aforementioned prior art. Furthermore, because 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 prior art, an inlet that opens in the depth direction (vertical) is less susceptible to the effects of surface tension due to the influence of gravity, making it easier for rainwater to be introduced into the gutter material.

[0032] 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 horizontally laid exterior materials (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 configuration in which the drainage recesses were arranged in a linear pattern in the direction intersecting the flow direction (left and right direction), and in which the drainage recesses were arranged in a staggered pattern in the flow direction.

[0033] Furthermore, in the above-mentioned experiment, tap water calculated from the maximum rainfall in the area was supplied as rainwater, but compared to the comparative example in which horizontal punched holes were provided, rainwater was able to be introduced more efficiently under almost all conditions, and no "trickling down" 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 material, but it is expected that the above conditions can be more widely relaxed by changing the raw material to a high-strength material. [Example]

[0034] FIG. 1 shows the present invention in This shows one example of installation of the cover member 1, in which the cover member 1 is attached at an angle to cover the eaves gutter 2. The above-water side mounting portion 12 of the cover member 1 is fastened with screws (screws 4b) together with retaining clips 4 to the back side of the horizontal roofing exterior material 3 on the eaves side, and the below-water side 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 of this construction example is a formed body of metal plate material similar to the horizontally laid exterior material 3, and the cover portion 11 located in the center is shown schematically in its bare surface, but as described above, a slit is made to the width dimension of the inlet, and then press working 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 explained in Examples 1 to 4 of Figures 2 to 5 described later.

[0035] Furthermore, the building in this construction example has roofing materials 6 made of cemented wood boards or the like and supporting materials 5, which are through materials, laid on an H-shaped frame 7 extending in the diagonal direction, and horizontally laid exterior materials 3 attached to the outside of the roofing materials 6 and supporting materials 5 via waterproof sheets 6b. A backing material 3b is attached to the back side of the horizontally laid 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 supporting materials 5. Note that, unlike the other retaining clips 4, the retaining clip 4' that holds the horizontally laid exterior material 3 on the eaves side is approximately flat, and is fixed to the supporting material 5 with screws 4b. In addition, a structural member 7B extending vertically is arranged at the eaves end of the H-structure 7, and a structural member 7C extending horizontally is arranged at its lower end, and wall exterior material 8A is arranged on the outside of structural member 7B, and fitting material 8B is arranged at the lower end, and eaves ceiling material 9A is arranged on the outside (underside) of structural member 7C.

[0036] In Examples 1 to 4 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-to-right width of the drainage recesses 10a to 10d is twice the separation width between adjacent drainage recesses 10a to 10d in the left-to-right direction. Furthermore, in Examples 1 to 3, the interval between the inlets 101a to 101c of adjacent drainage recesses 10a to 10c in the flow direction is 5 / 6 of the left-to-right width of the inlets 101a to 101c.

[0037] The cover part 11A of Example 1 shown in Figure 2 has a total of 20 groups of drainage recesses 10a, with five rows in the flow direction (vertical direction in the drawing) and four rows in the direction intersecting the flow direction (horizontal direction in the drawing), and each drainage recess 10a has a guide part 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. As shown in the enlarged view of Fig. 2(c), the drain recess 10a of Example 1 has a horizontally elongated shape in plan view with the opposing upper corners formed in an arc shape, and is formed by simultaneously forming a slit with the width of the inlet 101a and pressing the slit to form the lower end. In the press work, a curved mold is used as a male mold that faces from the front side, and the formed guide portion 102a is formed with an inclined curved surface that faces the inlet 101a formed at the water lower end. Therefore, regardless of the amount of rainwater, fallen leaves and the like cannot get in, and the surface tension of the rainwater does not act on the inlet (opening edge) 101a (forming a water film), so the inlet 101a still functions as an inlet, and the rainwater flows gently (smoothly) along the inclined guide portion 102a, allowing the rainwater and the like to be introduced into the eaves gutter 2 extremely quickly. [Example]

[0038] The cover part 11B of Example 2 shown in Figure 3 has a total of 20 groups of drainage recesses 10b, with five rows in the flow direction (vertical direction in the drawing) and four rows in the direction intersecting the flow direction (horizontal direction in the drawing), and each drainage recess 10b has a guide part 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. As shown in the enlarged view of Fig. 3(c), the drain recess 10b of Example 2 has a horizontally elongated rectangular shape in plan view, and is formed by simultaneously forming a slit with the width dimension of the inlet 101b and pressing the slit as the bottom end. In the press work, a polygonal mold is used as a male mold that faces from the front side, and the formed guide portion 102b is formed as multiple inclined planes facing the inlet 101b formed at the bottom end of the water.

[0039] In these Examples 1 and 2, the inclination angles of the guide portions 102a and 102b are formed steeply as shown in Figures 2(b) and 3(b). Therefore, the rainwater collection effect is less than that of Example 3 described later, but the rainwater can be reliably guided from these guide portions 102a and 102b to the inlets 101a and 101b and introduced into the gutter material (not shown). [Example]

[0040] The cover part 11C of Example 3 shown in Figure 4 has a total of 20 groups of drainage recesses 10c, with five rows in the flow direction (vertical direction in the drawing) and four rows in the direction intersecting the flow direction (horizontal direction in the drawing), and each drainage recess 10c has a guide part 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 Example 3 has a horizontally elongated shape in plan view with the opposing upper corners on the left and right sides formed in an arc shape, similar to Example 1 (however, the flow direction dimension is approximately twice that of Example 1), and is formed by simultaneously processing a slit with the width dimension of the inlet 101c and pressing it as the lower end. In the press processing, a curved mold (however, the flow direction dimension is approximately twice that of the male mold used in Example 1) 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 downstream end.

[0041] In this Example 3, the inclination angle of the guide portion 102c is formed gently as shown in Figure 4(b), so although the guide (flowing down) speed of rainwater is slower than in Examples 1 and 2, the guide portion 102c, which is about twice as wide, can collect a larger amount of rainwater and guide it to the inlet 101c. Note that although the guide portion 102c is formed gently as described above, the difference in height allows the rainwater to flow down to the lowest inlet 101c. [Example]

[0042] The cover part 11D of Example 4 shown in Figure 5 has a total of 20 groups of drainage recesses 10d, with five rows in the flow direction (vertical direction in the drawing) and four rows in the direction intersecting the flow direction (horizontal direction in the drawing), and each drainage recess 10d has a guide part 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 Example 4 differs from Examples 1 to 3 in that the distance 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-to-right width of the inlet ports 101d. However, the shape of the drainage recess 10d itself is substantially the same as that of the drainage recess 10c of Example 3. Furthermore, in Example 4, a water distribution rib 14 that protrudes toward the surface is provided between adjacent drainage recesses 10d, 10d in the left-to-right direction.

[0043] In this Example 4, a drainage recess 10d similar to the drainage recess 10c of Example 3 is provided, so a large amount of rainwater can be collected and guided (flowing down) to the inlet 101d, similar to Example 3. In this Example 4, the step pitch of the inlet 101d is formed wider than in Example 3, which raised concerns that rainwater might run diagonally due to the influence of wind, but it was confirmed that the provision of the water dividing rib 14 allowed the collected rainwater to be reliably guided to the adjacent drainage recesses 10d, 10d. [Example]

[0044] The cover part 11E of Example 5 shown in Figure 6 has a total of 30 groups of drainage recesses 10e, with five rows in the flow direction (vertical direction in the drawing) and six rows in the direction intersecting the flow direction (horizontal direction in the drawing), and each drainage recess 10e has a guide part 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 Example 5 has a planar shape that is oblong with the opposing upper corners on the left and right sides formed in an arc shape, and is formed by simultaneously slitting the width dimension of the inlet 101e and pressing it to form the lower end.What differs from Example 2 (10b) is that the base end of the guide portion 102e is formed in an inverted mountain shape rather than a mountain shape.

[0045] In this Example 5, a drainage recess 10e having a shape similar to the drainage recess 10b of Example 2 is provided, so that a large amount of rainwater can be collected and guided (flowed down) to the inlet 101e, as in Example 2. It has been confirmed that in this Example 5, rainwater can be guided more reliably to the guide portion 102e. [Example]

[0046] The cover part 11F of Example 6 shown in Figure 7 has a total of 36 groups of drainage recesses 10f, with 6 rows in the flow direction (vertical direction in the drawing) and 6 columns in the direction intersecting the flow direction (horizontal direction in the drawing), and each drainage recess 10f has a guide part 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 Example 6 is substantially similar to Example 5 (10e) in Figure 6, and its planar shape is horizontally elongated with the opposing upper corners on the left and right sides formed in an arc shape, and is formed by simultaneously slitting the width of the inlet 101f and pressing it to form the lower end.What makes it different from Example 5 (10e) is that the drainage recess 10f is more horizontally elongated, and a drainage portion 103f bent in a substantially downward direction is formed at the tip of the guide portion 102f.

[0047] In this embodiment 6, a drainage recess 10f is provided which is substantially the same as in the embodiment 5 (10e), and therefore has substantially the same water-conducting effect as the embodiment 5, but in particular, a substantially hanging drainage portion 103f is formed, which allows rainwater to more reliably fall to the back side (eaves gutter 2). In addition, in this Example 6, an eaves-side drain groove 131f with a concave cross section that is continuous in the longitudinal direction (horizontal direction) is provided at the underwater end of the cover portion 11F (the boundary between the cover portion 11F and the underwater mounting portion 13F), and multiple eaves-side drain grooves 131f with approximately circular eaves-side water guide holes 132f are provided at predetermined intervals in the eaves-side drain groove 131f. 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). [Explanation of symbols]

[0048] 1 Cover member 10, 10a~10e Drainage recess 101, 101a-101f entrance 102, 102a~102f Guide section 11, 11A to 11F Cover 12 Above-water mounting section 13,13F Underwater side mounting part 14 Water Dividing Rib 2 eaves gutter 3 Horizontal roofing exterior materials 4,4' Strings 5 Support material 6 Wild Floor 7 H Body 7B, 7C structural materials

Claims

[Claim 1] A method for manufacturing a cover member that has a substantially planar cover portion and an attachment portion at at least one end, and is disposed at an angle on a gutter material that has a drainage channel that is open at the top, The cover portion is formed with a plurality of rows of drainage recesses in a direction perpendicular to the direction of inclination, and 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, A method for manufacturing a cover member, characterized in that a notch corresponding to the inlet is formed by slit processing as the guide portion, and then a press processing is performed to recess the above-water side of the formed notch from above, thereby forming a recessed curved surface with a depth of 3 to 5 mm.

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