JP4475349B2 - Dust inflow prevention cover - Google Patents

Description

  The present invention relates to a dust inflow prevention cover for covering the drainage port of an eaves bowl and preventing the flow of fallen leaves, garbage, and the like.

  Conventionally, a dust inflow prevention cover for covering the drainage port of the eaves and preventing the fallen leaves, dust and the like from flowing is known from Patent Document 1 and the like.

  The conventional dust inflow prevention cover has a lattice shape that consists of a vertical beam and a horizontal beam intersecting each other, and the part surrounded by the vertical beam and the horizontal beam is an opening for water flow. When flowing rainwater from the eaves into the downpipe, relatively large dust, such as fallen leaves flowing along with the rainwater, is captured in the grid-like part, and the rainwater flows into the downpipe through the water passage opening. Yes.

  And in the said prior art example, the opening width of the opening for water flow which is the part enclosed by the vertical cross and the horizontal cross is about 5-15 mm.

  In the conventional example, since the opening width of the water passage opening is 5 to 15 mm, large dust such as fallen leaves of hardwood can be captured, but thin or small dust such as pine needles (hereinafter simply referred to as small dust) Although there is a possibility of flowing through the water passage opening, small dust rides on the flow of rainwater and flows down in the vertical gutter, so there is little risk of clogging the vertical gutter with small dust.

  However, in the process of reaching the present invention, the present inventor has made it possible to observe the state in which rainwater flows down from the eaves along the outer peripheral surface of the vertical gutter and the rainwater flows down along the outer peripheral surface of the vertical gutter. I thought of a new rainwater appreciation rain gutter device, but in order to make the rainwater from the eaves flow down along the outer periphery of the vertical wall in this way, the rainwater that passed through the dust inflow prevention cover may splash on the way Therefore, a water collecting device is required to collect water so that it is guided to the outer peripheral surface side of the vertical gutter and to flow substantially uniformly on the outer peripheral surface of the vertical gutter.

  However, the water collecting device that guides to the outer circumferential surface side of the downpipe while preventing the rainwater from splashing is designed so that the rainwater flows smoothly along the outer circumferential surface of the downpipe. It is necessary to reduce the opening width of the water-flowing part where the water flows, and this part is likely to be clogged with small dust, such as pine needles. However, it was found that there was a problem that rainwater did not flow smoothly along the outer peripheral surface of the downpile and the function as an ornament could not be achieved.

  Therefore, a conventional dust inflow prevention cover as disclosed in Patent Document 1 (capturing relatively large dust such as fallen leaves flowing along with rainwater in a lattice-shaped portion, Even if it is applied as a cover for preventing dust inflow in an ornamental rain gutter device for allowing rain water to flow along the outer peripheral surface of the vertical gutter, there are the following problems.

  That is, in the conventional dust inflow prevention cover as shown in Patent Document 1, the opening width of the water passage opening is 5 to 15 mm, so that small dust flows through the water passage opening, as described above. For this reason, there is a possibility that the water collecting device for guiding and flowing rainwater to the outer peripheral surface side of the vertical shaft will be clogged.

In addition, in the conventional example, since the entire part surrounded by the vertical beam and the horizontal beam is an opening for water flow, if fallen leaves stick to the lattice, the water flow opening itself is closed, There is a problem that water cannot be passed from this part.
JP 2005-336747 A

  This invention is invented in view of said conventional problem, Comprising: It aims at providing the cover for dust inflow prevention which can capture | acquire small dust reliably and can make water permeability favorable.

In order to solve the above problems, the dust inflow prevention cover according to the present invention is a dust inflow prevention cover 30 that covers the drainage port 8 of the eaves bowl 1, and has a lower surface opened, and a large number of side circumferential surfaces and upper surfaces. A water passage opening 31 is provided, the opening width of the water passage opening 31 is set to 1.5 mm to 3 mm, and a dust removal protrusion 32 that protrudes outward from the water passage opening 31 protrudes on the side surface and the upper surface. In addition, a plurality of vertical dust-relief protrusions 32 extending in the vertical direction of the side surface protrude from both side surfaces intersecting with the longitudinal direction of the eaves rod 1 on the side peripheral surface of the dust inflow prevention cover 30, and the vertical direction of the side surface. A horizontal dust removal projection 32 extending in the width direction of the side surface protrudes approximately in the middle of each of the two sides, and an imaginary line connecting the vertical dust removal projections 32 provided on both side surfaces has an arc shape and is formed on the both side surfaces. The protruding tip of the lateral dust-proof projection 32 provided is substantially on the imaginary line. And, characterized by comprising larger than the opening width of the water passing opening 31 the distance between the projections 32 aside dust vertical spacing and side peripheral surface between the projection 32 except the dust on the upper surface Is.

By adopting such a configuration, even a small dust such as pine needles can be reliably captured, and as a result, the flowing water appreciation rain gutter that can observe the appearance of rain water flowing along the outer peripheral surface of the vertical gutter 3 Even if it is used as the dust inflow prevention cover 30 in the device 6, clogging of the water collecting device can be suppressed. Moreover, the both sides which protrude the protrusion 32 for dust removal which protrudes outward rather than the opening 31 for water flow through a side part and an upper surface, and cross | intersect the longitudinal direction of the eaves bowl 1 among the side peripheral surfaces of the dust inflow prevention cover 30 A plurality of vertical dust-removing protrusions 32 extending in the vertical direction of the side surface protrude from the surface, and a horizontal dust-removing protrusion 32 extending in the width direction of the side surface protrudes substantially in the middle of the vertical direction of the side surface. An imaginary line connecting the vertical dust-proofing protrusions 32 provided on the surface is arcuate, and the protruding tips of the horizontal dust-proofing protrusions 32 provided on both side faces are substantially located on the imaginary line, and Since the interval between the dust removal projections 32 and the interval between the vertical dust removal projections 32 on the side surface are larger than the opening width of the water opening 31, the fallen leaves are dust removal projections. Even if it catches on the part 32, rainwater passes from the part other than the part that is caught. Flows into the space between the wide dust except projection 32 than the opening width of the use openings 31 may enter the smooth water collecting device 2 through the narrow water passage opening 31 of the aperture width.

  In the present invention, since the opening width of the water passage opening is set to 1.5 mm to 3 mm as described above, it is possible to prevent small dust from flowing down, and to observe how rainwater flows down along the outer peripheral surface of the vertical wall. It can be used as a dust inflow prevention cover for preventing clogging of such a flowing water viewing gutter device.

Further, a dust-relief protrusion projecting outward from the water passage opening is projected on the side surface and the upper surface, and the side surface is disposed on both side surfaces intersecting with the longitudinal direction of the eaves ridge among the side peripheral surfaces of the dust inflow prevention cover. A plurality of vertical dust removal projections extending in the vertical direction of the side surface, and a horizontal dust projection projection extending in the width direction of the side surface projecting substantially in the middle of the side surface in the vertical direction provided on both side surfaces An imaginary line connecting the dust-extruding protrusions has an arc shape, and the projecting tips of the lateral dust-extracting protrusions provided on both side surfaces are substantially located on the imaginary line, and between the dust-extracting protrusions on the upper surface. Since the interval and the interval between the vertical dust removal projections on the side peripheral surface are made larger than the opening width of the water opening, water permeability can be improved while having a function of capturing fallen leaves.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  1 and 2 show a dust inflow prevention cover 30 according to the present invention. The dust inflow prevention cover 30 has a lower surface opened, a plurality of water passage openings 31 are provided on the side peripheral surface and the upper surface, and a locking leg 33 having elasticity from the center of the lower surface of the upper surface portion downward. Protrusively configured.

  The dust inflow prevention cover 30 is disposed inside the eaves 1 so as to cover a later-described drain port 8, so that a locking leg 33 can be detachably attached to a later-described water collecting device 2 attached to the drain port 8. It is designed to be installed.

  The water passage opening 31 provided in the dust inflow prevention cover 30 has an opening width on the short side of the water passage opening 31 set to 1.5 mm to 3 mm.

  On the side peripheral surface and the upper surface of the dust inflow prevention cover 30, a dust removal projection 32 projects outward from the water passage opening 31. As shown in FIG. 2 (a), a plurality of dust removal projections 32 project from both side surfaces intersecting the longitudinal direction of the eaves 1 among the side circumferential surface portions of the dust inflow prevention cover 30, as shown in FIG. An imaginary line connecting a plurality of dust-proofing protrusions 32 protruding in the shape of an arc is formed. In addition, the interval between adjacent dust removal projections 32 is set to be wider than 1.5 mm to 3 mm, which is the opening width of the water passage opening 31, and the protruding tip of the dust removal projection 32 is chamfered. There is.

  The dust inflow prevention cover 30 of the present invention is used in the flowing water appreciating rain gutter apparatus 6 that can appreciate the appearance of rain water flowing down along the outer peripheral surface of the vertical gutter 3.

  The flowing water appreciation rain gutter device 6 includes a water collecting device 2 that collects rain water from the eaves 1, a vertical gutter 3 made of a cylindrical body, and a drainage device 5 that collects the flowing water below and discharges it to the drain pipe 4. It is.

  8 to 12 show components for constituting the water collecting device 2, and the water collecting device 2 is attached to the main body 9 attached to the drainage port 8 of the eaves 1 and the main body 9. A detachable lower part 10 that is detachably attached is provided.

  The main body 9 is composed of a main body upper portion 9a and a main body lower portion 9b.

  As shown in FIGS. 8 and 9, the main body upper portion 9 a is provided with a flange portion 13 outwardly from the upper end opening of the cylindrical portion 12 having the male threaded portion 11 on the outer peripheral portion, and from the inner peripheral surface of the cylindrical portion 12 to the inner side. The upper end portions of the plurality of vertical plate-like projecting piece portions 14 projecting in the upward direction are projected upward from the cylindrical portion 12. Further, a drain passage portion 16 is formed between the adjacent projecting piece portions 14.

  The tips of the plurality of projecting piece portions 14 come into contact with the outer surface of the vertical rod 3 when the upper end portion of the vertical rod 3 is fitted into the vertical rod support portion 15 in the cylindrical portion 12. The vertical rod 3 is supported, and in this embodiment, the vertical rod support portion 15 is configured by the tip portions of the plurality of projecting piece portions 14.

  The upper end portions of the plurality of projecting piece portions 14 are integrally connected to the central cylindrical portion 17 serving as an overflow portion, and the central cylindrical portion 17 is connected to the vertical rod support portion 15 and the upper end portion of the vertical rod 3 as described above. When fitted and supported, it communicates with the upper end of the vertical shaft 3 and the upper portion of the central tube portion 17 has a larger diameter than the lower portion.

  As shown in FIG. 10, the main body lower portion 9 b integrally connects the upper end portion of the outer cylindrical portion 18 and the upper end portion of the inner cylindrical portion 19, and the flange portion 20 toward the outer side from the outer periphery of the upper end of the outer cylindrical portion. An internal thread part 21 is provided on the inner peripheral surface of the inner cylinder part 19, and a fitting recess 22 is formed between the lower part of the inner cylinder part 19 and the outer cylinder part 18.

  As shown in FIG. 12, the detachable lower portion 10 is provided with a water collection guide portion 25 at the lower end portion of the upper cylinder portion 24 having an internal thread portion 23 on the inner periphery, and further, the water collection guide portion 25 from the lower end portion of the upper cylinder portion 24. The cover cylinder part 24a is provided so as to protrude downward so as to cover the outside of the cover.

  As shown in FIG. 12, the water collection guide portion 25 includes an inverted truncated conical cylindrical portion 29 and an inverted truncated conical shape having an inverted truncated cone shape that is inclined so that the front end side is directed downward from the lower end of the upper tubular portion 24. A number of comb portions 26 are formed so as to protrude from the peripheral portion of the lower end edge portion of the cylindrical portion 29 so that the tip end side is downward, and slits 28 are opened between the comb portions 26 in the vertical direction and the tip end side. In addition, a portion surrounded by the tips of many comb portions 26 is a vertical hook insertion portion 27 into which the vertical rod 3 is inserted.

  The slit width of the slit 28 between the comb portions 26 is 1.5 to 3 mm.

  In addition, as shown in FIG. 12, many comb portions 26 have different inward projecting lengths in plan view. In the embodiment of FIG. 12, the comb portions 26a have long projecting lengths. Comb portions 26b having a short protruding length are alternately provided in the circumferential direction. The comb portion 26a having a long projecting length is configured such that the tip of the comb portion 26a having a long projecting length abuts the outer surface of the vertical rod 3 in a state where the vertical rod 3 is inserted into the vertical rod fitting insertion portion 27 or both. The comb portion 26b having a short protruding length is formed with a short protruding length in a state where the vertical rod 3 is inserted into the vertical rod fitting insertion portion 27. It is set so that a gap of 1.5 to 3 mm is generated between the tip of the comb portion 26b and the outer surface of the vertical rod 3.

  The lower end of the cover cylinder part 26 is the same height as the lower end of the comb part 26 or lower than the lower end of the comb part 26.

  Here, the slit width of the slit 28 between the comb portions 26 is set to 1.5 to 3 mm, and a gap of 1.5 to 3 mm is provided between the tip of the comb portion 26 b having a short protruding length and the outer surface of the vertical rod 3. The reason for setting it to occur is to allow rainwater to flow almost uniformly on the outer peripheral surface of the vertical rod 3 through the slit 28 and the gap.

  That is, when the width of the slit 28 and the gap exceeds 3 mm, the rainwater flowing through the slit 28 does not flow along the slit 28 toward the downside 3 but falls directly from the top of the slit 28 through the slit 28 and scatters. Alternatively, it is not possible to concentrate a part of the outer peripheral surface of the vertical rod 3 in the circumferential direction so that the rainwater flows down, and the rainwater cannot flow down substantially uniformly in the circumferential direction. Further, if the width of the slit 28 and the gap is less than 1.5 mm, the slit 28 and the gap are easily clogged, and rainwater cannot be smoothly flowed to the outer peripheral surface of the vertical rod 3, so that the width of the slit 28 and the gap is 1. It is necessary to secure 5 mm or more.

  The water collecting device 2 having the above configuration is attached to the drainage port 8 of the eaves 1.

  That is, the cylinder part 12 of the main body upper part 9a is inserted into the drainage port 8 from above, and the cylinder part 12 protrudes below the eaves bowl 1 and the flange part 13 is brought into contact with the upper surface of the bottom part of the eaves bowl 1. In this state, the female screw portion 21 of the inner cylindrical portion 19 of the main body lower portion 9 b is screwed into the male screw portion 11 of the cylindrical portion 12, and the flange portion 20 is pressed against the bottom lower surface of the eave rod 1. Clamp the bottom of the heel 1 from above and below. In this state, the female screw portion 21 is screwed onto the upper portion of the male screw portion 11. In this way, the main body portion 9 composed of the main body upper portion 9a and the main body lower portion 9b is attached to the drain outlet 8 portion of the eaves bowl 1.

  Next, the internal thread portion 23 of the upper cylindrical portion 24 of the detachable lower portion 10 is detachably screwed into the lower portion of the external thread portion 11 of the main body upper portion 9a, and the upper end portion of the upper cylindrical portion 24 of the detachable lower portion 10 is fitted into the lower body portion 9b. By fitting into the recess 22, the detachable lower part 10 is detachably attached to the main body 9.

  The water collecting device 2 is attached to the drainage port 8 of the eaves bowl 1 as described above. The drainage port 8 of the eaves bowl 1 is further covered with the dust inflow prevention cover 30 of the present invention described above in the eaves bowl 1. It is like that.

  The dust inflow prevention cover 30 is disposed inside the eaves 1 so as to cover the drainage port 8 to which the water collecting device 2 is attached, and the locking leg 33 is inserted into the central cylindrical portion 17 to be locked. It attaches by latching the latching | locking part 34 of the lower end of the leg 33 to the lower end opening edge of the center cylinder part 17 so that attachment or detachment is possible.

  The vertical hook 3 is inserted into the vertical hook insertion part 27 that is the part surrounded by the tips of the numerous comb parts 26 of the water collecting device 2, further fitted into the vertical hook support part 15, and further fitted into the uppermost end. It is inserted into the recess 22.

  Further, the drainage device 5 is as shown in FIG. 13, and the upper end portion of the hole of the drainage cylinder part 35 constituting the main body becomes a large diameter hole part 36 having a larger diameter than the other part of the hole, and the drainage cylinder part. A plurality of inwardly projecting protrusions 37 in the shape of a plurality of vertical plates project inward from the inner periphery of the portion excluding the large-diameter hole portion 36 of the 35 holes. The plurality of inward projections 37 project at a constant pitch in the circumferential direction of the hole, and a gap 49 for drainage is formed between the inward projections 37.

  The upper half of the plurality of inward projections 37 has a shorter projection length than the lower half, and the top ends of the upper half of the plurality of inward projections 37 are outside the vertical rod 3. A lower fitting for fitting a lower end portion of the vertical rod 3 into a portion surrounded by the upper ends of the upper half of the plurality of inward projections 37 that are located on a virtual circle having the same diameter as the diameter It is part 38. Further, the lower end of the upper half tip of the inward projection 37 and the upper end of the lower half tip are continuous at the step 39.

  The drain cylinder 35 is formed with a lower fitting recess 40 that opens downward.

  The lower fitting portion 38 of the drainage device 5 is supported by being fitted into the lower fitting portion 38 at the lower end portion thereof. In this case, the lower end surface of the vertical rod 3 is placed on the step portion 39.

  In the embodiment shown in the accompanying drawings, the upper end portion of the adjustment member 41 made of a cylinder is fitted into the lower fitting recess 40 of the drainage cylinder portion 35, and the upper end of the drainage pipe 4 is fitted into the lower end portion of the adjustment member 41. It is like that.

  As shown in FIGS. 1 to 3 and 5, the adjustment member 41 includes an upper eccentric member 50 and a lower eccentric member 51, and the upper eccentric member 50 corresponds to the drain tube portion 35. A connecting tube portion 53 that is eccentric with respect to the fitting tube portion 52 is formed integrally with a lower portion of the fitting tube portion 52 that is rotatably fitted in the lower fitting recess 40, and the lower eccentric member 51 is a connecting tube. A drain pipe connecting cylinder part 55 that is eccentric with respect to the connected cylinder part 54 is formed at the lower part of the connected cylinder part 54 that is rotatably fitted to the part 53, and the drain pipe connecting cylinder part 55. The upper end of the drain pipe 4 is fitted into the pipe.

  Then, the fitting cylinder part 52 of the upper eccentric member 50 is rotated with respect to the vertical rod 3, the connected cylinder part 54 is rotated with respect to the connection cylinder part 53, and the drain pipe connection cylinder part with respect to the drain pipe 4. By rotating 55, the vertical gutter 3 and the drain pipe 4 which are vertical gutters can be connected even when they are displaced in plan view.

  Of course, the upper end portion of the drain pipe 4 may be directly fitted into the lower fitting recess 40 without using the adjusting member 41.

  The flowing water ornamental rain gutter device 6 configured in combination as described above is as shown in FIGS. 3 to 7, and rain water flowing through the eaves 1 from the water flow opening 31 of the dust inflow prevention cover 30. The water flows into the drainage passage portion 16 of the water collecting device 2 and flows into the water collection guide portion 25 from the drainage passage portion 16. Rainwater that has flowed to the water collection guide portion 25 partially flows along the upper surface of the plurality of downwardly inclined comb portions 26 toward the outer peripheral surface side of the vertical rod 3 and partially passes through the plurality of slits 28 to the outer periphery of the vertical rod 3. The rainwater flows substantially uniformly over the entire circumference in the circumferential direction of the outer circumferential surface of the vertical rod 3 from the gap between the tip of the comb portion 26 and the outer surface of the vertical rod 3 and the distal end of the slit 28.

  In this way, the rainwater that has flowed substantially evenly over the entire circumference in the circumferential direction of the outer peripheral surface of the upper end portion of the vertical gutter 3 does not scatter, and the entire circumference of the outer circumferential surface of the vertical gutter 3 is longitudinally formed as a thin film. It flows smoothly along the outer peripheral surface of the kite 3, preventing scattering that cannot be obtained with conventional chain kites, and how the rainwater flows down the outer peripheral surface of the vertical kite 3 with rainwater forming a film. Can watch.

  In this case, it can be said that rainwater flows substantially uniformly over the gap between the tip of the comb portion 26 and the outer surface of the vertical rod 3 and substantially the entire circumference of the outer peripheral surface of the vertical rod 3 from the tip of the slit 28. Further, due to the subtle changes in the rainwater flowing from the front end of the slit 28 to the downspout 3, as shown in FIG. 14, the flow pattern A is generated on the rainwater film flowing through the outer perimeter of the downspout 3, and As a result, it is possible to increase the viewing effect of the rainwater flowing down.

  Here, the reason why the opening width of the water passage opening 31 provided in the dust inflow prevention cover 30 of the present invention is set to 1.5 mm to 3 mm as described above is as follows.

  That is, the conventional dust inflow prevention cover 30 has a large opening width of the water passage opening 31 of about 5 to 15 mm as described above, and it is possible to avoid the fallen leaves of broadleaf trees, but the width or diameter is 5 to 15 mm. The following dust etc. will flow as it is. However, in the flowing water appreciating rain gutter device 6 that can observe the state of the rain water flowing down along the outer peripheral surface of the vertical gutter 3 as described above, the rain water collected by the water collecting device 2 is taken up by the vertical gutter. 3, it is necessary to flow almost uniformly in the circumferential direction of the outer peripheral surface, and as described above, the slit width of the slit 28 between the comb portions 26 of the water collecting device 2 is 1.5 to 3 mm, and the protruding length The gap is set so that a gap of 1.5 to 3 mm is generated between the tip of the short comb portion 26b and the outer surface of the vertical rod 3. Corresponding to this, the dust inflow prevention cover 30 of the present invention is set. The opening width of the water passage opening 31 is set to 1.5 mm to 3 mm.

  Accordingly, dust (for example, fallen leaves, insects, dust, etc.) that closes the slits 28 and the gaps for allowing rainwater to flow almost uniformly on the outer peripheral surface of the downspout 3 is prevented by the dust inflow prevention cover 30. The water collecting device 2 can be prevented from flowing into the water collecting device 2, and clogging of the slit 28 and the gap of the water collecting device 2 can be suppressed.

  Further, as described above, since the imaginary line connecting the plurality of dust removal projections 32 projecting on both side surfaces of the dust inflow prevention cover 30 is formed in an arc shape, the fallen leaves are dust removal. Even if a fallen leaf or the like does not stick to the tip surface of the projection 32, the rainwater is between the projections 32 for dust removal wider than the opening width of the water passage opening 31 from the portion other than the portion where the rainwater is caught. Can flow into the water collecting device 2 smoothly through the water passage opening 31 having a narrow opening width.

  The dust inflow prevention cover 30 is easily removed by releasing the engagement between the engagement portion 34 at the lower end of the engagement leg 33 and the lower end opening edge of the central cylinder portion 17, so that the dust inflow prevention cover 30 can be easily formed. The trapped dust can be removed. Here, although the locking part 34 has an arrowhead shape, the tip part of the arrowhead has no return part, making it easy to attach and detach.

  In addition, since the dust inflow prevention cover 30 is detachable as described above, the shape of the central cylindrical portion 17 in the water collecting device 2 is made common so that it can be detachably attached to water collecting devices having different drainage capacities. be able to.

  Moreover, when the hydrophilic processing is given to the outer peripheral surface of the vertical gutter 3, it is possible to prevent the rainwater flowing down along the outer peripheral surface of the vertical gutter 3 from scattering more and to flow smoothly along the outer peripheral surface.

  Rainwater flowing down in the form of a film on the outer periphery of the vertical gutter 3 flows into the drainage gap 45 of the drainage device 5 and flows into the drainage pipe 4 (if there is an adjustment member 41, the drainage pipe 4 is passed through the adjustment member 41. Drained).

  When the amount of rainwater flowing in the eaves 1 increases and the rainwater that has passed through the dust inflow prevention cover 30 exceeds the upper end of the central tube portion 17, part of the rainwater flows from the upper opening of the central tube portion 17. It flows directly into the upper opening of the vertical gutter 3 from the part 17 and passes through the vertical gutter 3 and flows into the drain pipe 4 (if there is an adjustment member 41, it flows into the drain pipe 4 via the adjustment member 41) and is drained. The Of course, in this case as well, it flows down along the outer circumferential surface of the vertical rod 3 in the same manner as described above.

  In this way, rainwater flowing through the eaves 1 is collected by the water collecting device 2 and is allowed to flow down along the outer peripheral surface of the vertical rod 3 fitted and held at the upper end of the water collecting device 2 (rainwater flowing through the eaves 1 If there is a large amount of water, a part of the vertical rod 3 flows down), and rainwater flowing along the outer peripheral surface of the vertical rod 3 is drained to the drain pipe 4 through the drainage device 5. The rainwater flowing down along the surface is not allowed to flow down but is allowed to flow into the drain pipe 4 and reliably drain even if the amount of rainwater increases. Therefore, the flowing water ornamental rain gutter apparatus 6 of the present invention is provided. Can be used without hindrance even in places where a large amount of rainwater flows, as well as in the vicinity of gates and entrance porches near the entrance of the site.

  In the said embodiment, although the cover 30 for dust inflow prevention of this invention was shown in the example used for the flowing water appreciation rain gutter apparatus 6 which can observe a mode that rain water flows down along the outer peripheral surface of the vertical gutter 3, Even in the case where rainwater is allowed to flow from the eaves rod 1 to the inside of the vertical rod 3 as in the prior art, the drain port 8 of the eaves rod 1 may be covered with the dust inflow prevention cover 30 of the present invention.

It is a perspective view of the dust inflow prevention cover of the present invention. (A) is a top view same as the above, (b) is a front sectional view, and (c) is a side sectional view. It is front sectional drawing of the flowing water ornamental rain gutter apparatus which attached the cover for dust inflow prevention of this invention. It is a front view same as the above. It is a side view same as the above. It is a top view same as the above. It is a perspective view of the construction state same as the above. The upper part of the main body used in the above is shown, (a) is a plan view, (b) is a front sectional view, (c) is a sectional view cut at a different position, and (d) is a bottom view. (A) is the perspective view which looked at the upper part of the main body same as the above from the upper part, (b) is the perspective view seen from the lower part. The lower part of a main part same as the above is shown, (a) is a top view, (b) is a front view, and (c) is a front sectional view. The attachment-and-detachment lower part used for the same is shown, (a) is a top view, (b) is a front sectional view, and (c) is a bottom view. (A) is the perspective view which looked at the attachment-and-detachment lower part same as the above from the lower part, and (b) is the perspective view seen from the upper part. The drainage apparatus used for the above is shown, (a) is a plan view, (b) is a cross-sectional view. It is a perspective view which shows the ripple which generate | occur | produces when rainwater is flowing down along the outer peripheral surface of a vertical shaft same as the above.

Explanation of symbols

One eaves 8 Drain outlet 30 Dust inflow prevention cover 31 Water flow opening 32 Dust removal protrusion

Claims (1)

It is a dust inflow prevention cover that covers the eaves outlet of the eaves, the lower surface is open, a large number of water passage openings are provided on the side peripheral surface and the upper surface, the opening width of the water passage opening is 1.5 mm to 3 mm A dust-extruding protrusion projecting outward from the water passage opening on the side surface and the upper surface, and the side surface on both side surfaces intersecting with the longitudinal direction of the eaves ridge among the side peripheral surfaces of the dust inflow prevention cover A plurality of vertical dust removal projections extending in the vertical direction of the side surface, and a horizontal dust projection projection extending in the width direction of the side surface projecting substantially in the middle of the side surface in the vertical direction provided on both side surfaces An imaginary line connecting the dust-extruding protrusions has an arc shape, and the protruding ends of the lateral dust-extracting protrusions provided on both side surfaces are substantially located on the imaginary line, and between the dust-excluding protrusions on the upper surface. The interval and the interval between the vertical dust removal projections on the side surface are larger than the opening width of the water opening. Dust inflow preventive cover, characterized by comprising Te.

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