JP2018105016A - Eaves drainage structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an eaves drainage structure that can reduce clogging at the strainer net portion due to garbage, fallen leaves, etc., and enables smooth drainage.SOLUTION: In the drainage structure in which a drain pipe 6 is buried in a rising part 5 of the eaves of the top floor or the middle floor of a building 1 and the drain pipe 6 communicates with a gutter 7 on the outdoor side of the rising part 5, the indoor side of the rising part 5 has a recess 9, a strainer net 11 is disposed in the recess 9, and an opening of the drain pipe 6 is exposed to the strainer net 11. The strainer net 11 has an erected portion 11b of the recess 9 and a flat portion 11a continuous with the erected portion 11b. A side groove 3B is provided at the root of the rising portion 5, and a water gradient (high position H, low position L) directed to the drain pipe 6 is formed in the side groove 3B.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an eaves drainage structure for draining rainwater or the like in a building having a flat roof.

  Conventionally, as this kind of eaves drainage structure, a drain main body having a tray-shaped water receiving container fitted on the floor side upper surface of the corner formed by the floor and the standing wall, and a drain pipe connecting portion inserted on the standing wall side of the corner, A drain cover having a horizontal cover portion covering the upper surface of the water receiving container and a vertical cover portion covering the inlet side opening of the drain pipe connecting portion, and having a plurality of water intake openings in both cover portions. There is a horizontal drain. The horizontal drain is configured as an openable / closable lid body in which at least a part of the lateral cover portion is hinged to the remaining portion of the drain cover (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 10-231592

  By the way, the horizontal drain having the above structure has an effect that the inside can be cleaned without removing the drain cover. However, since the vertical wall surface and the vertical cover portion are on the same surface, the vertical drain continuous with the vertical wall surface is provided. There is a risk of clogging due to accumulation of dust, fallen leaves, and the like along the facing cover portion, and the drainage of rainwater and the washing water for washing the roof portion may be delayed due to the clogging.

  The present invention has been made in view of such problems, and the object of the present invention is to reduce clogging in the strainer net portion due to dust blown away by strong winds, etc. It is to provide an eaves-end drainage structure that enables this.

  In order to achieve the above-mentioned object, the eaves drainage structure according to the present invention has a drainage pipe embedded in the rising part of the eaves on the top floor or the middle floor of the building, and the drainage pipe leads to a fence on the outdoor side of the rising part. The drainage structure is characterized in that there is a concave portion on the indoor side of the rising portion, a strainer net is disposed in the concave portion, and an opening of the drain pipe faces the strainer net.

  In the eaves drainage structure of the present invention configured as described above, the strainer network is disposed in the recessed portion on the indoor side of the rising portion, and the strainer network is disposed at a position recessed from the indoor side surface of the rising portion. For this reason, dust, fallen leaves, and the like blown away by strong winds are squeezed at the corners of the recesses, and are prevented from accumulating near the strainer net and causing clogging. Therefore, it is guaranteed that rainwater and the like pass through the strainer network, and drainage can be performed smoothly.

  Moreover, as another preferable aspect of the eaves-end drainage structure according to the present invention, the strainer net has an upright portion located in the recess and a flat portion continuous to the upright portion. . Here, the vertical surface portion is not limited to a vertical surface, and may be a slightly inclined vertical surface. The flat surface portion is not limited to a horizontal surface, and may be a slightly inclined plane.

  In the eaves-end drainage structure configured in this way, since there is a strainer net across the elevation part located in the recess and the plane part continuous to the elevation part, for example, the strainer net in the plane part is dust or fallen leaves. Even if it is blocked, it can be drained through the strainer net at the elevation, so that smooth drainage can be maintained.

  In another aspect of the eaves drainage structure of the present invention, an overflow drain pipe is embedded in the rising portion, and one end of the overflow drain pipe communicates with an intermediate position of the drain pipe. The end faces the indoor side surface of the rising portion at a position above the recess, and an auxiliary strainer network is disposed at the other end.

  In the eaves drainage structure configured in this way, rainwater can be drained from the overflow drainpipe even if dirt or fallen leaves accumulate on the strainer net and the water level rises and the water level rises. Can prevent overflowing water. However, since there is a recess below the opening at one end of the overflow drain pipe, the possibility that dust, fallen leaves, etc. accumulate on the strainer net is extremely low.

  In another aspect of the eaves drainage structure of the present invention, a side groove is provided at the base of the rising portion, and a water gradient toward the drain pipe is formed in the side groove. In the eaves drainage structure of the present invention configured in this way, rainwater that has fallen on the roof surface or balcony surface during rainfall is collected in the gutter, and is caused to flow in the direction of the drainage pipe due to the water gradient of the gutter. Drainage can be performed smoothly. Furthermore, since rainwater is collected through the gutter, installation of eaves can be eliminated, leading to a reduction in the number of parts.

  In another preferred aspect of the eaves drainage structure of the present invention, the ridge is a ridge. According to this configuration, since rainwater and the like drained through the strainer net are processed via the dredger, contamination of the outer wall surface of the building can be prevented. Further, as described above, the installation of eaves is not necessary, and only the eaves may be applied.

  Furthermore, as a preferable aspect of the eaves drainage structure according to the present invention, the front shape viewed from the indoor side of the recess is a rectangle, and protrudes from the recess to the indoor side on two rising sides constituting the rectangle, respectively. It is characterized by a flange. In the eaves-end drainage structure configured as described above, dust, fallen leaves, and the like can be more effectively stopped by the flange protruding from the recess to the indoor side, and smoother drainage can be ensured.

  According to the eaves drainage structure of the present invention, clogging of the strainer network due to deposits such as dust and fallen leaves can be eliminated or reduced, and smooth drainage of rainwater and the like is possible.

1 is a schematic perspective view of a two-story building to which an eaves drainage structure according to the present invention is applied. FIG. 2 is a vertical cross-sectional view of a main part showing a part A of FIG. 1. FIG. 2 is a vertical sectional view of a main part other than part A in FIG. 1. It is a figure which shows the detail of the A section of FIG. 1, (a) is a principal part perspective view of the spacer which forms the recessed part which is the characteristic structure of this invention, (b) is a drain pipe and a strainer in the wall material of a building It is a principal part perspective view of the state which fixed the receiving tool of the net | network, (c) is a principal part perspective view of the state which mount | wears with the strainer net | network combining (a) and (b). (A) is a principal part perspective view which shows the modification of the eaves edge drainage structure which concerns on this invention, (b) is a principal part horizontal direction sectional drawing of (a), (c) shows another modification. It is principal part horizontal direction sectional drawing. (A) is a perpendicular direction sectional view of the important section showing the section B of FIG. 1, and (b) is a sectional view of the drain pipe unit used in (a). It is a figure which shows the detail of the B section of FIG. 1, (a) is a principal part perspective view of the spacer which forms a recessed part, (b) is a drain pipe fixed to the wall material of (a) and a building, overflow drainage It is a principal part perspective view of the state which combines a pipe | tube and a strainer net | network receiver, and mounts | wears with a strainer net | network.

  Hereinafter, a plurality of embodiments of the eaves drainage structure according to the present invention will be described in detail with reference to the drawings.

(Buildings where the eaves drainage structure is applied)
First, a building to which a plurality of embodiments of the eaves drainage structure according to the present invention is applied will be described. FIG. 1 is a schematic perspective view of a building to which a plurality of embodiments of eaves-end drainage structures are applied. In FIG. 1, a building 1 is a two-story building with a flat roof and has a flat roof, and the eaves drainage structure 100 of the first embodiment is a drainage structure (A part) at the eaves of the second floor part (top floor). The eaves drainage structure 100C of the third embodiment described later is applied as a drainage structure (B part) at the eaves of the balcony part (intermediate floor) of the first floor part.

(Embodiment 1 of eaves drainage structure)
Next, the eaves drainage structure 100 according to Embodiment 1 of the present invention will be described in detail with reference to FIGS. 2 is a vertical cross-sectional view of the main part of the eaves drainage structure 100 shown by part A in FIG. 1, FIG. 3 is a vertical cross-sectional view of the main part other than part A in FIG. 1, and FIG. (A) is the principal part perspective view of the spacer which forms the recessed part which is the characteristic structure of this invention, (b) is a drainage pipe | tube and a strainer net holder on the wall material of a building. It is the principal part perspective view of the fixed state, (c) is a principal part perspective view of the state which mount | wears with the strainer net | network combining (a) and (b).

  2 to 4, a building 1 is a building having a structure in which, for example, steel columns and beams are combined, and an H-shaped steel beam 2 constituting a roof floor (top floor) and a number of beams not shown. A structure is constituted by a pillar and a pillar. The columns and beams may be either buildings using heavy steel frames or buildings using lightweight steel frames, and may also be wooden buildings. The roof floor is composed of a large number of beam members including the beam 2, and a roof material 3 of, for example, an ALC (Autoclaved Lightweight Concrete) plate is fixed horizontally above the beam member including the beam 2 as the roof material. Similarly, on the outdoor side, a wall material 4 of an ALC plate and an outer wall material 4A such as a siding plate are fixed vertically as wall materials.

  The wall material of the building 1 provided with the eaves drainage structure 100 is a configuration in which the outdoor side wall material 4A and the indoor side wall material 4 are fixed in parallel with a gap therebetween as described above. The gap between the outer wall material 4A and the wall material 4 constitutes a ventilation passage. The wall material may be a single-sheet structure instead of the two-sheet structure as described above.

  The wall material 4 and the outer wall material 4 </ b> A extend upward from the roof material 3 located above the beam 2 and constitute a rising portion 5 at the eaves edge. In the building 1, the rising portion 5 is formed over the entire circumference of the second floor portion on the top floor. As shown in FIG. 1, a water gradient K1 is provided on the upper surface of the roofing material 3, and rainwater falling on the roof surface flows along the water gradient. A step roof material 3 </ b> A is disposed at a position lower than the roof material 3 at the joint portion between the roof material 3 and the rising portion 5 on the side where the water gradient is low. The roofing material 3 and the stepped roofing material 3A are fixed on the ceiling surface composed of the beams 2 and the like.

  As shown in FIG. 2, a drain pipe 6 is embedded in a horizontal direction in a rising portion 5 that extends upward from the roof surface of the roof material 3, and the drain pipe 6 penetrates the wall material 4 and the outer wall material 4A. Communicating with the fence 7 on the outdoor side. The flange 7 is fixed to the outer wall material 4A with a support 7a. A side groove 3 </ b> B is formed along the rising portion 5 on the step roof material 3 </ b> A fixed with a step at the joint between the roof material 3 and the wall material 4. With this configuration, the side groove 3B is provided in a stepped state at the base of the rising portion 5 at the eaves edge.

  As shown in FIGS. 2 and 3, a water gradient K1 is provided on the upper surface of the roofing material 3 in the direction of the side groove 3B. As shown in FIG. 1, when the roof material 3 is in a single flow, the side groove 3 </ b> B is formed along the rising portion 5 on one side on the side having a low water gradient. Although not shown, side grooves are formed along the two rising parts 5 facing each other in the case of both flows, and side grooves are formed along the four rising parts 5 in the case of a roof such as a dormitory. It is formed. For this reason, the rain water which fell on the roof surface of the upper part of the roofing material 3 flows toward the rising part 5 of the outer periphery. Further, a water gradient toward the drain pipe 6 is formed in the side groove 3B, and water flows from the high position H toward the low position L (see FIG. 2). In the illustrated example, the drain pipe 6 is embedded horizontally, but may be embedded with a slight gradient (water gradient) so as to be lower on the outdoor side.

  A spacer 8 is disposed along the indoor side at the upper part of the joint between the roof material 3 and the wall material 4, and the lower part of the spacer 8 extends to the upper part of the side groove 3B. In the spacer 8, a recess 9 is formed at a position corresponding to the drain pipe 6. When the spacer 8 is brought into contact with the wall material 4, the indoor-side standing surface of the wall material 4 at the back of the recess 9 is a depressed surface dropped from the indoor-side standing surface of the spacer 8 to the outdoor side. The recess 9 has a rectangular front shape viewed from the indoor side, and the depth is preferably about 10 to 30 mm. The horizontal width of the recess 9 is preferably about several times the diameter of the drain pipe 6, and is preferably about 150 to 200 mm when the diameter of the drain pipe 6 is 60 mm. The vertical height of the concave portion 9 is preferably about 0.5 to 0.8 times the height of the rising portion 5, but the depth, width, and height of the concave portion 9 are limited to the above values. It is not a thing.

  The spacer 8 is formed of a plate material, and is formed of, for example, a wooden plate material, plywood, or an ALC plate material. The spacer 8 is formed with a gate-shaped recess 9 corresponding to the position of the drainage pipe 6, and as shown in FIGS. 4 (a) and 4 (c), the front shape viewed from the indoor side is rectangular. . The rectangular recess 9 has two rising edges 9a and 9a that are parallel to each other, and the corners of the rising edges are edge portions 9b and 9b. The edge portions 9b and 9b have a function of clogging dust and fallen leaves.

  In the eaves drainage structure 100, the spacer 8 is arranged side by side with the wall material 4 and the outer wall material 4 </ b> A to form a rising portion 5. A headboard 10 is installed on the upper part of the rising portion 5, and the headboard 10 covers the upper part of the wall material 4, the outer wall material 4 </ b> A and the spacer 8. Intrusion of rainwater or the like into the building 1 from the upper ends of these three members. This prevents rain on the upper part of the wall material 4 and the like. In addition, the edge part of the outdoor side of the coping 10 protrudes larger than the outer wall material 4A, and comprises the exit of the ventilation channel | path.

  On the step roof material 3A constituting the lower part of the side groove 3B, a support 12 for fixing the strainer net 11 in a detachable manner is fixed at a position corresponding to the drain pipe 6. The indoor side opening of the drain pipe 6 is located in the recess 9, and the vertical position of the indoor side opening is buried deeper than the bottom surface of the side groove 3 </ b> B. A recess 12a that is inclined downward is formed so that rainwater or the like flowing through the side groove 3B flows to the drain pipe 6 without stagnation.

  The building 1 provided with the eaves-end drainage structure 100 performs sheet waterproofing. That is, the waterproof sheet 13 is laid from the roof material 3 to the upper side of the step side groove 3B, the recess 9, the spacer 8, and the headboard 10, and the waterproof sheet 13A covering the roof material 3 is overlapped at the rising portion of the side groove 3B. The upper part is waterproofed. In the side groove 3 </ b> B, the surface of the receiver 12 is covered with a waterproof sheet 13. As shown in FIG. 3, the waterproof sheet 13 rises from the side groove 3 </ b> B along the spacer 8 and is laid down to the headboard 10 at a portion where the drain pipe 6 and the recess 9 are not provided.

  The strainer net 11 is formed in a mesh shape so as to have a function of allowing water to pass without passing dust and fallen leaves. The strainer net 11 is disposed in the concave portion 9 and is located in the concave portion 9 and in the side groove 3B. The horizontal portion 11a extends in the horizontal direction, and the vertical surface portion 11b extends in the vertical direction. The cross section which has is formed in L shape. Note that the flat surface portion 11a is not limited to being horizontal, but may be slightly inclined, and the elevation surface portion 11b is not limited to being vertical, and may be slightly inclined.

  An elevation surface portion 11 b of the strainer net 11 is located in the recess 9, and the opening of the drain pipe 6 faces the strainer net 11. The flat portion 11 a of the strainer net 11 covers the recess 12 a of the receiving tool 12. With this configuration, the opening of the drain pipe 6 and the recess 12a of the receiving fixture 12 fixed to the side groove 3B are covered with the strainer net 11, and inflow of dust and fallen leaves into the drain pipe 6 is prevented. The strainer net 11 may be an appropriate one such as a mesh or slit.

  In the portion of the rising portion 5 without the drain pipe 6 and the recess 9 shown in FIG. 3, an adjustment plate 3C is disposed above the step roof material 3A in accordance with the depth of the side groove 3B. From the upper surface of the adjustment plate 3C A waterproof sheet 13 is laid along the indoor side of the spacer 8 to waterproof the side groove 3B and the rising portion 5.

  As described above in detail, the eaves drainage structure 100 includes the drain pipe 6 embedded in the rising portion 5, the concave portion 9 on the indoor side of the rising portion 5, and the strainer network 11 disposed in the concave portion 9. The opening of the drain pipe 6 faces the strainer net 11.

  The operation of the eaves drainage structure 100 configured as described above will be described below. When raining on the waterproof sheet 13 </ b> A of the roof material 3 during rainy weather, rainwater flows toward the side groove 3 </ b> B due to the water gradient of the roof surface and accumulates in the side groove 3 </ b> B at the base of the rising portion 5. If fallen leaves, dust, etc. are scattered on the roof surface, they are flushed with the rainwater into the lateral groove 3B. Since the side groove 3B has a water gradient in the direction of the drain pipe 6, rainwater, dust, fallen leaves, etc. flow in the direction of the drain pipe 6 along the side groove 3B. Since the side groove 3B has a water gradient in the direction of the drain pipe 6 and water can flow in the direction of the drain pipe 6, no eaves are required, leading to a reduction in the number of parts.

  Rainwater that flows along the side grooves 3B with fallen leaves etc. flows in the direction of the drainage pipe 6 and reaches the recesses 9 formed around the drainage pipes 6, so that the two vertical edge portions 9b of the recesses 9 whose frontal shape is rectangular, Falling leaves and the like are caught on 9b, and rainwater passes through the strainer net 11 and flows into the drain pipe 6 via the receiving fixture 12, and is drained to the outside through the eaves 7. For this reason, it is prevented that fallen leaves etc. accumulate on the strainer net | network 11, and are clogged, and drainage, such as rain water, is performed smoothly.

  When rainwater passes through the strainer net 11, it passes through the flat portion 11 a and passes through the recess 12 a of the receiver 12, and passes through the elevation portion 11 b and reaches the drain pipe 6. When a large amount of dust, fallen leaves, etc. are blown off by the wind, fallen leaves that are not caught by the edge portions 9b, 9b of the recess 9 may accumulate on the flat surface portion 11a of the strainer net 11, but the elevation portion 11b. Since no fallen leaves or the like are accumulated in the rainwater, the rainwater reaches the drain pipe 6 through the elevation part 11 b and is drained through the eaves 7. The strainer net 11 is detachably attached to the receiver 12, and the inside of the receiver 12 can be easily cleaned by removing a set screw or the like.

  As described above, in the eaves drainage structure 100, the rising portion 5 and the concave portion 9 are provided, and the strainer net 11 is provided in the concave portion 9, so that the dust, fallen leaves, and the like blown off on the roof by a strong wind or the like are strained. Therefore, it is possible to prevent the drainage of rainwater and the like from being accumulated, and the drainage of the strainer net 11 can be prevented, thereby enabling smooth drainage.

(Embodiment 2 of eaves drainage structure)
Next, with reference to FIG. 5, the eaves drainage structure 100A according to the second embodiment and the eaves drainage structure 100B according to the modification will be described. FIG. 5: is a principal part perspective view which shows Embodiment 2 of an eaves-end drainage structure, its schematic plan view, and the schematic plan view of the modification of Embodiment 2. FIG. 5 (a) and 5 (b), in this eaves drainage structure 100A, the concave portion 9 has a rectangular front shape viewed from the indoor side, and along the two rising edges 9a and 9a of the rectangle constituting the concave portion, Two flanges 14 and 14 projecting from the recess 9 to the indoor side are fixed by screws or the like. The flanges 14 and 14 are appropriately formed by bending a metal plate material, a resin plate material, or the like.

  In the eaves drainage structure 100A, when rainwater flowing through the side groove 3B together with dust, fallen leaves, etc. flows in the direction of the strainer net 11 disposed in the recessed portion 9 formed on the indoor side of the rising portion 5, the rainwater flows from the recessed portion 9 to the indoor side. The projecting flanges 14, 14 dampen dust and fallen leaves more effectively and do not reach the strainer net 11. For this reason, it is possible to prevent dirt and fallen leaves from accumulating on the strainer net 11 and clogging, and the drainage pipe 6 can be drained more smoothly.

  FIG. 5C shows an eaves drainage structure 100B according to a modification of the second embodiment. In the eaves drainage structure 100A, the flanges 14 and 14 protrude so as to spread indoors, whereas the eaves drainage structure 100B projects. In the drainage structure 100B, the flanges 14a and 14a protrude so as to be squeezed into the indoor side. Even in the modification shown in FIG. 5C, dust and fallen leaves that have flown with rainwater are more effectively dammed by the flanges 14 a and 14 a and do not reach the strainer network 11, so that the strainer network 11 is clogged. Can be prevented. The protruding direction, angle, height, width, etc. of the flange can be set as appropriate.

(Embodiment 3 of eaves drainage structure)
Next, as an eaves drainage structure according to Embodiment 3 of the present invention, an eaves drainage structure 100C of the balcony portion shown by B portion of the first floor portion of FIG. 1 will be described in detail with reference to FIGS. 6A and 6B show an eaves drainage structure 100C according to the third embodiment, wherein FIG. 6A is a vertical sectional view of a main part showing a portion B of FIG. 1, and FIG. 6B is a sectional view of a drain pipe unit used in FIG. FIG. 7A is a perspective view of the main part of the spacer forming the recess, and FIG. 7B is a perspective view of the main part in a state in which the strainer net is mounted in combination with FIG. The eaves drainage structure 100C is characterized in that the eaves drainage structure 100 is a drainage structure applied to the eaves of the middle floor (the first floor), whereas the eaves drainage structure 100 is the top floor eaves drainage structure. Note that, in the eaves drainage structure 100C, the substantially same configuration as the eaves drainage structure 100 is denoted by the same reference numeral, and detailed description thereof is omitted.

  The eaves drainage structure 100C includes a balcony portion on the beam 2A located on the ceiling of the first floor portion which is an intermediate floor, and drains the balcony portion. As shown in FIG. 1, a water gradient K <b> 2 is given to the balcony portion toward the eaves direction. The third embodiment is characterized in that an auxiliary strainer port 15 for preventing overflow is provided at the upper part of the strainer net 11. The auxiliary strainer port 15 prevents the rainwater from getting over the headboard 10 and leaking to the outside when a large amount of fallen leaves or the like has blocked the strainer net 11 and a large amount of rainwater has accumulated in the upper part of the side groove 3B. The rainwater flows through the auxiliary strainer port 15 to the drain pipe 6A.

  The auxiliary strainer port 15 is embedded in the rising wall (rising portion) 5 </ b> A for preventing the falling of the balcony portion, and is located above the drain pipe 6. Also in the third embodiment, there is a concave portion 9 on the indoor side of the rising wall 5A, a strainer net 11 is disposed in the concave portion 9, and the opening of the drain pipe 6A faces the strainer net 11. The auxiliary strainer port 15 is in the recess 9 and opens to the indoor side in the same manner as the drain pipe 6. An auxiliary strainer net 16 is attached to the opening of the auxiliary strainer port 15 to prevent passage of dust and fallen leaves. An overflow drain pipe 17 bent at a right angle, such as an elbow, is connected to the outdoor side of the pipe of the auxiliary strainer port 15 and communicates with the upper part of the drain pipe 6A. The auxiliary strainer port 15 may be provided on the outer upper side of the recess 9.

  As described above in detail, the eaves drainage structure 100C includes the drain pipe 6A embedded in the rising portion 5A, the concave portion 9 on the indoor side of the rising portion 5A, and the strainer network 11 disposed in the concave portion 9. The drainage pipe 6A faces the strainer net 11, and an overflow drainage pipe 17 is embedded in the rising part 5A. One end of the overflow drainage pipe 17 communicates with an intermediate position of the drainage pipe 6A. The multiple ends of 17 face the indoor side surface of the rising portion 5A at a position above the recess 9, and the auxiliary strainer net 16 is disposed at the other end.

  Also in the eaves drainage structure 100C, since the strainer net 11 is disposed in the concave portion 9 on the indoor side of the rising portion 5, and the drain pipe 6A faces the strainer net 11, the fallen leaves and dust that have flowed along with the rainwater are in the side groove 3B. Is flown in the direction of the drain pipe 6A, and is caught by the edge portions 9b, 9b at the corners of the concave portion 9 to be deposited in the concave portion 9. For this reason, clogging of the strainer network due to deposits such as dust and fallen leaves is reduced, and smooth drainage such as rainwater becomes possible.

  In the eaves drainage structure 100C, the fallen leaves and the like are prevented from being accumulated and the drainage through the drain pipe 6A is prevented from stagnation in the same manner as in the eaves drainage structure 100. By draining to the drain pipe 6A through the pipe 17, there is an advantage that a large amount of rain water can be prevented from accumulating in the rising wall 5A of the balcony.

  In the third embodiment shown in FIGS. 6 and 7, flanges 14 and 14 a as shown in FIG. 5 can be provided along the two rising sides 9 a and 9 a of the recess 9. By providing the flange in this way, dust and fallen leaves can be more efficiently damped, so that clogging of the strainer net 11 can be further reduced, and smooth drainage is possible.

  As shown in FIG. 6B, the drain pipe 6A and the overflow drain pipe 17 used in FIG. 6A are configured as a drain pipe unit 18 integrated by bonding or the like, and constitute a rising wall 5A. It may be embedded in the wall material 4. By using the drainage pipe unit 18 integrated in this way, the eaves drainage structure including the overflow drainage pipe can be easily installed in the building 1.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention described in the claims. The design can be changed. For example, a building having an eaves drainage structure can be applied to a wooden frame structure building, a two-by-four structure building, a concrete building, and the like in addition to a steel structure building.

  Although the example of the roof material of ALC board was shown as a roof material, it is not restricted to this, For example, a precast concrete board, a metal roof material, and other appropriate roof materials may be used. That is. Moreover, although the example of sheet | seat waterproofing was shown as a waterproofing of a side groove | channel, you may form a side groove | channel using the member which bent the metal plate material and made the hook shape.

  In addition, the concave portion provided at the rising portion has been shown by an example of processing the spacer. Thus, a recess can be formed. Such a configuration eliminates the need for a spacer and can simplify the configuration.

  1: building 2, 2A: beam, 3: roofing material, 3A: step roofing material, 3B: gutter, 4: wall material, 4A: outer wall material, 5: rising part, 5A: rising wall (rising part), 6 , 6A: drain pipe, 7: ridge (8), 8, 8A: spacer, 9: recessed portion, 9a: rising edge, 9b: edge portion, 10: coping, 11: strainer net, 11a: flat surface portion, 11b: Elevated portion, 12: Strainer net holder, 12a: Dimple, 13: Waterproof sheet, 14, 14a: Flange, 15: Auxiliary strainer port, 16: Auxiliary strainer net, 17: Overflow drain pipe, 18: Drain pipe unit , H: high position of the water gradient of the side groove, L: low position of the water gradient of the side groove, 100, 100A, 100B, 100C: eaves drainage structure

Claims (6)

In the drainage structure where drainage pipes are buried in the rising part of the eaves of the top floor or middle floor of the building, and the drainage pipe leads to the fence on the outdoor side of the rising part,
An eaves drainage structure in which a recess is provided on the indoor side of the rising portion, a strainer net is disposed in the recess, and an opening of the drain pipe faces the strainer net.   The eaves drainage structure according to claim 1, wherein the strainer net has an elevation part located in the recess and a flat part continuous to the elevation part.   An overflow drain pipe is embedded in the rising part, and one end of the overflow drain pipe communicates with a midway position of the drain pipe, and the other end of the overflow drain pipe is located above the concave portion on the indoor side. The eaves drainage structure according to claim 1 or 2, wherein an auxiliary strainer net is disposed at the other end.   The eaves drainage structure according to any one of claims 1 to 3, wherein a side groove is provided at a base of the rising portion, and a water gradient toward the drain pipe is formed in the side groove.   The eaves drainage structure according to claim 4, wherein the ridge is a ridge.   The front shape when viewed from the indoor side of the recess is a rectangle, and flanges that protrude from the recess toward the indoor side are respectively provided on two rising sides constituting the rectangle. The eaves drainage structure according to one item.

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