JP3118236U - Rainwater lid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rainwater jar with excellent water collection efficiency.
SOLUTION: A rectangular groove having a longitudinal wall portion and a widthwise wall portion in a direction orthogonal to the longitudinal wall portion is installed in a side groove embedded along a boundary portion between a roadway and a sidewalk. A lid body is provided, a water collection port is provided in a sidewalk side region of the lid main body, a plurality of rib portions having vertical vertical wall surfaces are provided at intervals, and a water collection port portion of the sidewalk side region is provided between the rib portions. A rainwater lid that is a separate water collecting port, wherein one end of a plurality of ribs is arranged at intervals in the width direction, and the other end of the ribs is arranged at intervals in the longitudinal direction. It arrange | positions in the vicinity of a water collection port part, and the rib part is curled by the width direction wall part and the longitudinal direction wall part.
[Selection] Figure 1

Description

  The present invention relates to a rainwater lid installed on the side of a road in order to guide rainwater on a road surface to a rainwater tank and a gutter.

  A general roadway has a gentle downward slope from its central portion toward the sidewalk so that rainwater and the like during rainy weather can be quickly discharged from the roadway. Further, the boundary block having a step at the boundary between the roadway and the sidewalk is further inclined. Under the boundary block, there is a gutter for draining rain water on the road surface. The gutter allows the rain water to penetrate into the gutter and the ground where sediments and pebbles flowing from the road surface are deposited. Rainwater tanks such as seepage tanks are installed at predetermined intervals.

  Above these rainwater traps, rainwater lids are installed to allow inflow of rainwater on the road surface. As such rainwater traps, the inside of a rectangular peripheral frame is vertically and horizontally arranged with a plurality of lattice members. A metal grid-like lid (grating) having a structure in which a plurality of through holes are entirely arranged by partitioning is well known.

  Rainwater flowing on the side of the sidewalk flows in the direction from the higher side to the lower side along the boundary block due to the influence of the downward slope of the roadway, and rainwater flowing on the side of the roadway away from the sidewalk is in the lane direction of the roadway Due to the influence of the combined gradient of the downward slope of the roadway and the downward slope toward the sidewalk from the center of the roadway, it flows in a direction that obliquely intersects the traveling direction of the roadway and flows into the through hole of the rainwater cover.

However, the rainwater lid is simply a crossover of the lattice members that are orthogonal to the entire surface, and does not take into account the flow direction of rainwater or the efficiency of collecting rainwater (ease of inflow). When it is installed on an actual roadway, there is a problem that rainwater that tends to flow into the rainwater basket collides with the lattice member, so that it is difficult for rainwater to flow in and the rainwater collecting ability is low. Therefore, as a rainwater lid having a configuration in consideration of the water collection efficiency, a rib portion (grid) is formed in a direction obliquely intersecting the lane direction and a space between the rib portions is used as a water collection port portion. (For example, refer to Patent Document 1).
JP 2003-301508 A

  However, the rain that falls on the roadway often flows toward the sidewalk first, then flows along the boundary block, and flows into the rainwater basin from the rainwater culvert lid. Therefore, the rainwater lid with the above configuration forms ribs and water collection ports in a direction that considers the direction of rainwater flow, etc., but is sufficient to allow the rainwater flowing along the boundary block to flow into the rainwater tank. That wasn't true.

  Then, this invention makes it a subject to provide the rainwater jar lid excellent in water collection efficiency in view of the said subject.

  The rainwater cover of the present invention is installed in the side groove embedded along the boundary between the roadway and the sidewalk with a distance in the longitudinal direction, and the width in the direction perpendicular to the longitudinal wall portion. A rectangular lid body having a direction wall portion is provided, a water collecting port portion is provided in a sidewalk side region of the lid body, a plurality of rib portions having vertical vertical wall surfaces are provided at intervals, and the rib portions are provided between the rib sides. The water collecting port portion is different from the water collecting port portion of the region, and one end portion on the longitudinal direction side of the plurality of rib portions is arranged with an interval in the width direction, and the other end portion on the width direction side of the rib portion is spaced in the longitudinal direction. Is placed near the water collecting port portion of the sidewalk side region, and the rib portion is constrained to the width direction wall portion and the length direction wall portion.

  In the above-described configuration, rainwater that has directly entered the water collection port flows into the lateral groove as it is. In addition, the rainwater that flows through the boundary between the roadway and the sidewalk and reaches the rainwater jar lid falls from the water collection port portion in the sidewalk side region and the water collection port portion between the rib portions, and is guided to the gutter. The rainwater that has flown through the boundary reaches the lid body at a speed corresponding to the slope and the amount of rain, or the boundary between the roadway and the sidewalk has a slope. The rib part has a vertical wall surface, and the rib part has one end and the other end facing the width direction wall part and the longitudinal direction wall part, respectively. Since the rainwater that has flowed through the boundary part hits the vertical wall surface at a reasonable speed, the force that travels from one direction to the other direction is exerted on the sidewalk side area. The rainwater guided to the water collecting port portion in the sidewalk side region falls from the water collecting port portion and flows into the side groove. On the other hand, the water collection efficiency is good because the water collection port between the ribs also falls into the side groove.

  In the rainwater lid according to the present invention, the plurality of rib portions forming another water collecting port portion are curved so as to project toward the roadway side in the intermediate direction between the longitudinal direction and the width direction. Yes.

  According to the above configuration, since the vertical wall surface of the rib portion is also curved as a whole so as to protrude in the intermediate direction between the longitudinal direction and the width direction and toward the roadway side, rainwater hitting the vertical wall surface at an appropriate speed. Is easier to guide smoothly to the water collecting port in the sidewalk side area due to the curved surface of the vertical wall, and less impact from rainwater with a corresponding speed than in the case of a rib with a vertical wall. Therefore, since the water impact force when it hits the vertical wall surface is relaxed and the reflective power to the vertical wall surface is easily relaxed, the disturbance of rainwater is less likely to occur, and the sidewalk side area is smoothly smoothed accordingly. You will be guided towards the water collection port.

  In the rainwater lid of the present invention, a plurality of rib portions forming another water collecting port portion are provided on both sides in the longitudinal direction with respect to the longitudinal center of the lid body, so that the symmetrical shape with respect to the longitudinal center is formed. It is characterized by being formed.

  In the above configuration, rainwater not only flows from one side of the boundary part to reach the rainwater lid, but by providing the rib parts on both sides in the longitudinal direction of the lid body, from any direction in the longitudinal direction of the boundary part The rainwater that reaches the rainwater cover is also guided to the drainage port in the sidewalk side area and reaches the gutter. Furthermore, by forming it symmetrically as described above, it can be applied to the case where it is installed at a boundary portion that is inclined in one of the longitudinal directions, and the same water collection efficiency can be obtained.

  The rainwater lid of the present invention is characterized in that a plurality of longitudinal rib portions are provided so as to extend between the rib portions in the longitudinal direction, and the space between the longitudinal rib portions is a further water collecting port portion. .

  In the said structure, water collection efficiency becomes favorable because rain water falls from the water collection port part between longitudinal direction rib parts.

  The rainwater lid of the present invention is characterized in that each rib portion is formed with chamfers at the upper portions on both sides in the separation direction.

  In the above configuration, rainwater that hits the vertical wall surface and climbs over the upper surface of the rib portion is chamfered so that the water is collected smoothly because the chamfer is smoothly guided downward by this chamfering to reach the side groove. Is called.

  According to the rainwater cover of the present invention, there is a vertical wall surface in the rib part of the rainwater cover, and the rib part is configured so that one end part and the other end part are crossed into the width direction wall part and the longitudinal direction wall part, respectively. Since the end is located near the water collection mouth part of the sidewalk side area, it guides the force going from one direction to the other side of the rainwater cover with the appropriate speed to the water collection mouth part of the sidewalk side area. Therefore, the rainwater guided to the water collecting port portion in the sidewalk side region falls from the water collecting port portion and flows into the side groove, so that the water collecting efficiency is improved.

  Hereinafter, a rainwater lid according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a rainwater lid, FIG. 2 is a sectional view taken along line (a)-(a) in FIG. 1, FIG. 3 is a sectional view taken along line (b)-(b) in FIG. (C)-(c) line sectional drawing, FIG. 5 is the (d)-(d) line sectional view of FIG.

  As shown in these figures, the rainwater lid 1 has a gap (for example, an interval of 10 to 20 m) in the longitudinal direction A in a side groove (not shown) embedded along the boundary 17 between the roadway 2 and the sidewalk 3. It will be installed. The rainwater lid 1 is provided so as to be rotatable and openable via a hinge member 6 with respect to a receiving frame 5 (not shown) that communicates with the lateral groove.

  The rainwater lid 1 is formed in a symmetrical shape with the center 7 in the longitudinal direction A as the center. Such a rainwater lid 1 has a lid body 8 and a rib portion.

  The lid body 8 has a frame body portion 10 and a bottom wall portion 11. The frame body portion 10 is formed in a U-shaped rearward open rear view comprising a front longitudinal wall portion 12 and a pair of left and right width direction wall portions 13 and 14 in a direction orthogonal to the longitudinal wall portion 12 (width direction of the boundary portion 17). Has been. The upper surface height of the bottom wall portion 11 is set parallel to the upper surface height of the frame body portion 10. That is, the upper surface of the bottom wall portion 11 is composed of regions corresponding to a high position region 15 and a gradient region 16 as described later. In this embodiment, the dimensional ratio between the longitudinal direction A and the width direction B in the bottom wall portion 11 is set to approximately 2: 1.

  The upper surface of the longitudinal wall 12 is at the same height (in a single state not attached to the receiving frame 5). On the other hand, the upper surface of the width direction wall parts 13 and 14 has the high position area | region 15 of the height equal to the height of the longitudinal direction wall part 12, and the gradient area | region 16 which inclines downward toward the sidewalk 3 side. The setting of the gradient corresponds to the gradient in the front-rear direction of the boundary portion 17 between the roadway 2 and the sidewalk 3.

  A protruding locking portion 20 that locks from above to the support surface 18 of the frame body portion 10 extends so that the rear end portions of the width direction wall portions 13 and 14 protrude further toward the rear side (the sidewalk 3 side). Is formed. Further, a plurality of other protruding locking portions 21 projecting further rearward and locking to the support surface 18 of the frame body portion 10 from above are formed on the rear end surface of the bottom wall portion 11. Has been. These other protrusion-shaped locking portions 21 are arranged away from each other in the longitudinal direction A. And between these latching | locking parts 20 and 21, it is set as the large capacity | capacitance water inlet part 22 by the sidewalk 3 side.

  A plurality of types of rib portions are formed integrally with the bottom wall portion 11 so as to sandwich the longitudinal wall portion 12 and the width direction wall portions 13 and 14. These rib portions are configured to include first rib portions 23 and 24, second rib portions 25 and 26, and third rib portions 27 and 28.

  The first rib portions 23 and 24 and the second rib portions 25 and 26 are arranged symmetrically with respect to the longitudinal center 7 of the lid body 8 and the other specific configurations are the same. 7, the configuration of the first rib portions 23, 24 on the left side of FIG. 7 is described, and the description of the second rib portions 25, 26 on the right side is also used.

  The first rib portions 23 and 24 are curved so as to project toward the side of the roadway 2 in the intermediate direction between the longitudinal direction A and the width direction B. In this case, the first rib portions 23 and 24 are provided in a plurality (a plurality of strips: eight in the figure), and each of the first rib portions 23 and 24 is formed in a concentric circular arc shape in plan view. Yes.

  Some of the first rib portions 23 and 24 (six first rib portions 23 in the figure) have a base end portion 30 that is one end portion thereof integrated with an inner wall surface 32 of the width direction wall portion 13. Yes. The remaining two first rib portions 24 have base ends 31 that do not reach the width-direction wall portion 13, and are connected to the outer peripheral wall portion 35 of the rectangular notch 33 for providing the hinge member 6. Yes. In addition, if these 1st rib parts 24 are the structures which do not provide the hinge member 6 and do not have the rectangular notch 33, the base end part 30 is connected with the inner wall surface 32 of the width direction wall part 13. As shown in FIG. That is, the extension line of the remaining first rib portion 24 hits the inner wall surface 32 of the width direction wall portion 13. The upper surface heights of the base end portions 30 and 31 of the first rib portions 23 and 24 are the same height as the upper surface of the width direction wall portion 13.

  The first rib portion 23 has a tip portion 40 which is the other end portion reaching the large-capacity water collecting port portion 22 between the locking portions 20 and 21. With this configuration, a plurality of groove-shaped guide paths 45 that are curved in plan view for guiding the rainwater W toward the large-capacity water collecting port portion 22 are formed between the first rib portions 23. The base end wall of the passage 45 corresponds to the inner wall surface 32 of the width direction wall portion 13, and the distal end portion of the guide passage 45 is configured to be released to the large-capacity water collecting port portion 22. In addition, the height from the upper surface of the bottom wall part 11 of the 1st rib part 23 is constant, and the radial direction cross section along the length of the circumferential direction of the 1st rib part 23 is formed in the same cross section. .

  A part of the bottom wall portion 11 corresponding to these guide paths 45 is vertically penetrated, and a plurality of hollow fan-shaped water collecting port portions 46 are formed in a plurality of rows. The arc centers of these water collecting port portions 46 are concentric circles, and are formed at predetermined row intervals in the circumferential direction (see FIG. 6). The row intervals are projected in the front-rear direction and are equal (row interval L1). ), And projected in the front-rear direction, the length L2 of most of the water collection port portions 46 is also equal. When the water collecting port 46 is projected in the longitudinal direction A, the water collecting port 46 is positioned so as to overlap with any other water collecting port 46.

  The first rib portions 23 and 24 having the above-described configuration are formed symmetrically at symmetrical positions around the longitudinal center 7.

  Further, apart from the first rib portions 23 and 24 and the second rib portions 25 and 26, longitudinal rib portions 47 and 48 are provided. The longitudinal rib portions 47 and 48 are formed by connecting the first rib portion 24 and the second rib portion 26 located closest to the roadway 2 of the first rib portions 23 and 24 and the second rib portions 25 and 26 in the longitudinal direction A. A plurality are provided along the longitudinal direction A. Both ends in the longitudinal direction A of the longitudinal rib portions 47 and 48 are connected in the longitudinal direction A to the first rib portion 24 and the second rib portion 26 that are closest to the roadway 2 respectively. However, the longitudinal rib portion 48 closest to the roadway 2 is connected to the outer peripheral wall portions 35 and 36 of the rectangular notches 33 and 34 for providing the hinge member 6 in the longitudinal direction A.

  A plurality of grooves 50 that are long in the longitudinal direction A are formed between the longitudinal rib portions 47 and 48, and a part of the bottom wall portion 11 of these grooves 50 is vertically penetrated to form a plurality of front gathers. A water mouth part 51 is formed. These front water collecting port portions 51 are formed at the predetermined row interval L1. The longitudinal rib portions 47 and 48 are formed in the same cross section in the longitudinal direction A.

  Chamfers 52 and 53 are formed at the upper portions of the first rib portions 23 and 24, the second rib portions 25 and 26, and the longitudinal rib portions 47 and 48 on both sides in the separation direction of the rib portions. Such chamfers 53 are also formed in the width direction wall portions 13 and 14 and the longitudinal direction wall portion 12, respectively, and the chamfers 52 and 53 are formed over the entire length direction of each rib portion. Each of the first rib portions 23, 24, the second rib portions 25, 26, and the longitudinal rib portions 47, 48 has a cross section in a direction perpendicular to the length direction of each rib portion so that the cross section becomes wider from the bottom to the top. Both surfaces are formed with a slight inclination from the vertical direction, and these both surfaces are vertical wall surfaces 60 and 61 for guiding the rain water W to fall. That is, the vertical wall surfaces 60 and 61 of the first rib portions 23 and 24 are formed to be curved so as to protrude toward the roadway 2 in the intermediate direction between the longitudinal direction A and the width direction B. A small protrusion 55 protruding upward is formed on the upper surface of each rib portion.

  The rainwater lid 1 having the above-described configuration is installed in the receiving frame 5 of the boundary portion 17 corresponding to the gradient. For example, in FIG. 1, it is installed in a downward slope (longitudinal slope, road traveling direction slope) in the longitudinal direction A from the left side to the right side of the page. On the other hand, since the roadway 2 is also provided with a gradient (transverse gradient, width gradient), there is rainwater W that has fallen on the road surface from the roadway 2 side toward the rainwater lid 1. However, since the rainwater cover 1 is disposed only at predetermined intervals in the longitudinal direction A, the amount actually flowing along the boundary portion 17 and flowing in from the first rib portion 23 side of the rainwater cover 1 is larger. It is common.

  In view of this, in the rainwater jar lid 1, the first rib portion 23 is curved so as to protrude toward the roadway 2 in the intermediate direction between the longitudinal direction A and the width direction B, and the vertical wall surfaces 60 and 61. Is curved so as to project toward the side of the roadway 2 in the intermediate direction between the longitudinal direction A and the width direction B. That is, a part of the rainwater W flowing in from the first rib portion 23 side hits the vertical wall surfaces 60 and 61, and the guide path 45 is released from the width direction wall portion 13 to the large-capacity water collecting port portion 22. Therefore, even if the rainwater W that reaches the first rib portion 23 has a speed according to the gradient, a part of the rainwater W is large along the guide path 45 while losing the water-impacting force accompanying the speed. It is guided toward the capacity water collecting port 22 and falls from the large capacity water collecting port 22.

  Further, since a plurality of water collecting port portions 46 are formed in the middle of the guide path 45, there is also rain water W that falls from these water collecting port portions 46 on the way to the large capacity water collecting port portion 22.

  A standard rainwater lid X (lattice lid) with no ribs inclined, a rainwater lid Y that forms ribs in a direction that obliquely intersects the lane direction described above, and uses a gap between the ribs as a water collecting port, The water collection efficiency with the rainwater lid Z of the present invention was tested under the same conditions. FIG. 6 is a plan view of a state in which the rainwater jar lid Z is mounted on the test apparatus table, FIG. 7 is a front sectional view, and FIG. 8 is a side sectional view.

Test conditions Rainwater lid test equipment stand (wooden)
・ Road gradient in the road direction on the upper surface of the test equipment table: 5%
-Width gradient on the upper surface of the test equipment table: 2%
2. Flowing water method Concentrated heavy rain was set at 80 mm / h, and 18 liters of water from the size of the test apparatus table was flowed from the left toward the rainwater lid in 1 second. Moreover, the test materials used for the test are as follows (Table 1). The test results are as follows (Table 2). In this test, the amount of water dropped from the rainwater lid is not directly measured, but the rainwater lid is overflowed without falling from the rainwater lid, and the discharge surface 71b (a downstream end described later) The water collection efficiency was indirectly measured by measuring the amount of effluent from (Part)).

さらに、所定の強度に耐え得るか否かの荷重試験も行っており、雨水桝蓋Ｘ,Ｙ,Ｚともにクリアーしていることが確認されている。 Reference numeral 70 indicates a test apparatus base, reference numeral 71 indicates a frame portion thereof, and the wall surface 71a thereafter has a function of a boundary block, and the rear wall surface 71a side of the side wall 71b is cut away to be flush with the bottom surface 70a of the test apparatus base 70. The discharge surface 71c is formed. Reference numeral 72 denotes a weir member, which prevents water (rain water W) flowing from one side in the longitudinal direction A from flowing to the front side.

In addition, a load test is conducted to determine whether or not it can withstand a predetermined strength, and it has been confirmed that all of the rainwater lids X, Y, and Z are clear.

As shown in the above (Table 2), the average amount of effluent water (average of specimens Nos. 3, 4, and 5) is
・ Rainwater lid X (0.65): 3.3%
・ Rainwater lid Y (0.56): 2.8%
・ Rainwater lid Z (0.38): 1.9%
Therefore, it can be seen that the rainwater cover Z (the present invention) has the highest water collection efficiency. In addition, the rainwater cover Z has a small amount of water that overflows the rainwater cover even though the opening ratio is lower than that of the rainwater cover X (standard), that is, the water collection efficiency is good. Recognize.

  The reason why such water collection efficiency is improved is that a plurality of inclined or curved rib portions for guiding rainwater to the large-capacity water collection port portion are provided on the boundary side where the flow rate is large, and the vertical wall surface of the rib portion. The rainwater guide wall is used to smoothly guide the rainwater to the large-capacity water collection port, the water collection port is formed in the guide path of the inclined or curved rib, and the rainwater is chamfered. It is thought that the main factor is that the fall of the water is smoothly performed.

The top view of the state attached to the receiving frame of the rainwater jar cover of this invention. Similarly (a)-(a) sectional view taken on the line of FIG. FIG. 2 is a cross-sectional view taken along the line (b)-(b) in FIG. 1. Similarly, (c)-(c) cross-sectional view of FIG. Similarly, (d)-(d) sectional view of FIG. The top view of a test state similarly. Similarly front sectional drawing. Similarly side sectional drawing.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Rainwater cover, 2 ... Roadway, 3 ... Sidewalk, 5 ... Receiving frame, 6 ... Hinge member, 8 ... Led body, 10 ... Frame body part, 11 ... Bottom wall part, 12 ... Longitudinal wall part, 13,14 DESCRIPTION OF SYMBOLS Width direction wall part, 15 ... High position area | region, 16 ... Gradient area | region, 17 ... Boundary part, 18 ... Support surface, 20, 21 ... Locking part, 22 ... Large-capacity water collection port part, 23, 24 ... 1st rib Part, 25, 26 ... second rib part, 27, 28 ... third rib part, 30 ... base end part, 31 ... base end part, 32 ... inner wall surface, 33 ... rectangular notch, 35 ... outer peripheral wall part, 40 ... Tip part 45 ... Guide path 46 ... Water collecting port part 47,48 ... Longitudinal rib part 50 ... Groove 52,53 ... Chamfering 55 ... Small protrusion 60,61 ... Vertical wall surface A ... Longitudinal direction B ... Width direction, W ... Rainwater

Claims (5)

A rectangular lid body having a longitudinal wall portion and a width direction wall portion perpendicular to the longitudinal wall portion is provided in a side groove embedded along the boundary between the roadway and the sidewalk. A water collecting port portion is provided in the sidewalk side region of the lid body, and a plurality of rib portions having vertical vertical wall surfaces are provided at intervals, and a space between the rib portions is different from the water collecting port portion of the sidewalk side region. The rainwater lid that is part of
One end portion of the plurality of rib portions is arranged at intervals in the width direction, and the other end portion of the rib portions is arranged in the vicinity of the water collecting port portion of the sidewalk side region at intervals in the longitudinal direction. A rainwater lid covering the wall in the width direction and the wall in the longitudinal direction. The rainwater tank according to claim 1, wherein the plurality of rib portions forming another water collecting port portion are curved so as to project toward the roadway side in an intermediate direction between the longitudinal direction and the width direction. lid. A plurality of rib portions forming another water collecting port portion are provided on both sides in the longitudinal direction with respect to the longitudinal center of the lid body, and are formed in a symmetrical shape with the longitudinal center as the center. The rainwater lid according to claim 1 or claim 2. 4. A rainwater lid according to claim 3, wherein a plurality of longitudinal rib portions are provided between the rib portions in the longitudinal direction, and a further water collecting port portion is provided between the longitudinal rib portions. . 5. A rainwater lid according to any one of claims 1 to 4, wherein each rib portion is formed with chamfers at upper portions on both sides in the separation direction.

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