JP3722623B2 - Drainage - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drainage basin that can be suitably used when connecting a drainage pipe to an inclined land or a staircase-like formation site.
[0002]
[Prior art]
Japanese Utility Model Laid-Open No. 6-43485 discloses a drainage basin that can be used when connecting a drainage pipe to a sloped land or a staged land. As shown in the partially cut cross-sectional view of FIG. 4, the drainage pipe has an outflow pipe 2a welded to the lower side wall of the riser pipe 1a, and a raised bottom 3a having a concave bowl curved surface on the lower end side of the riser pipe 1a. In addition, the raised bottom space formed by the raised bottom 3a and the bottom plate 3b is filled with a filler X such as sand or urethane foam.
[0003]
[Problems to be solved by the invention]
However, this conventional drainage basin does not clearly set the mounting position between the parts, so that not only the connecting work is troublesome when welding the outflow pipe 2a and the raised bottom 3a to the riser pipe 1a, but also firmly Since they are not joined, there is a risk that the parts will be separated and damaged by long-term use.
[0004]
The present invention solves such a problem, and the drainage basin is composed of three parts so that the parts can be easily and reliably fixed to each other, and there is no risk of the parts being separated and damaged even after long-term use It is to provide firewood.
[0005]
[Means for Solving the Problems]
The drainage basin of the present invention comprises a riser pipe, a socket with a hook, and a bottom plate. A connection hole is formed in the lower side wall of the riser pipe, and the connection hole is surrounded and attached to the outer wall surface of the pipe. The flange part of the socket is bonded and connected, and the bottom plate has a cylindrical part that hangs down from the periphery of the disk-shaped bottom wall, and the lower end part of the riser pipe is fitted and bonded to the outer peripheral side of the cylindrical part A cylindrical support body is provided which forms an arcuate gap in which the groove and the flange portion of the flanged socket which is adhesively bonded to the lower outer wall surface of the riser tube are fitted and bonded.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an unfolded state of a drainage basin of the present invention, FIG. 2 is a rear view of a socket with a basin, and FIG. 3 is a cross-sectional view showing a state where the drainage basin of the present invention is installed on site. Reference numeral 1 denotes a rising tube, 2 is a hooked socket, and 3 is a bottom plate.
[0007]
The riser pipe 1 is made by cutting a synthetic resin pipe such as a vinyl chloride pipe into a predetermined length. A connection hole 11 is formed in a lower side wall of the riser pipe 1, and an upper edge of the connection hole 11 is formed. A semicircular cutout 12 is provided.
[0008]
The flanged socket 2 has a branch pipe 22 projecting from the convex side of a flange part 21 bent in an arc shape, and the flange part 21 is provided with a through hole 20 communicating with the branch pipe 22. On the back surface (concave surface side) of the flange portion 21, a locking projection 23 is provided at the upper portion of the peripheral edge of the through hole 20, and a connection projection 24 is provided at the lower portion.
[0009]
The tip of the locking projection 23 is bent upward and has a bowl shape. When the locking projection 23 is inserted with the connection hole 11 and the notch 12 of the rising tube 1 being hidden, the inside of the rising tube 1 Engage with the wall. The connection protrusion 24 is formed in an arc shape along the periphery of the through hole 20 and can be fitted into the connection hole 11 of the rising tube 1. At this time, the distal end of the connecting projection 24 slightly protrudes from the inner wall surface of the rising tube 1, and a chamfered inclined surface provided on the lower surface of the distal end can be rubbed and joined to an invert surface of the bottom plate 3 described later without any gap. ing.
[0010]
On the other hand, the bottom plate 3 is integrally molded by injecting vinyl chloride resin, and is provided with a cylindrical portion 32 that hangs down from the peripheral edge of the disc-shaped bottom wall 31, and in the horizontal direction at the lower end edge of the cylindrical portion 32. A flange 36 is provided to project. A cylindrical support 33 is provided on the upper surface of the flange 36. An annular groove 34 into which the lower end of the riser 1 is fitted between the support 33 and the cylindrical part 32, and the riser 1. An arcuate gap 35 into which the lower end portion of the flange portion 21 of the flanged socket 2 adhesively bonded to the lower outer wall surface is inserted is formed.
[0011]
Further, the upper surface of the bottom wall 31 of the heel bottom plate 3 is inclined in a mortar shape from the peripheral portion toward the central portion, and descends downward from the lowest central portion toward the center of the arc-shaped gap 35. An inclined invert 310 is formed. The invert 310 is formed in an arc shape in cross section, and an inclined surface 311 is provided at the end edge thereof. An inclined surface provided on the lower surface of the distal end of the connecting projection 24 of the hooked socket 2 described above can be rubbed and bonded to the inclined surface 311 via an adhesive.
[0012]
The drainage basin of the present invention comprises the above-described riser pipe 1, socket 2 with basin, and basin plate 3, and these parts are assembled as follows. First, an adhesive is applied to the outer wall surface of the pipe surrounding the connection hole 11 formed in the lower side wall of the rising pipe 1 and the back surface of the flange portion 21 of the flanged socket 2. Therefore, after the locking protrusion 23 of the flanged socket 2 is hidden in the connection hole 11 and the notch 12 of the rising tube 1, the back surface of the flange 21 is pressed against the outer wall surface of the rising tube 1 and bonded.
[0013]
Next, an adhesive is applied to the inner and outer peripheral surfaces of the lower end portion of the rising tube 1 and the outer surface of the lower end portion of the flange portion 21 of the flanged socket 2, and the rising tube is interposed between the cylindrical portion 32 of the bottom plate 3 and the support 33. Push in the lower end of 1. Then, the lower end portion of the riser pipe 1 is inserted into the annular groove 34 of the bottom plate 3 and is firmly bonded and joined. At the same time, the lower end portion of the flange portion 21 of the flanged socket 2 inserted into the arc-shaped gap 35 is Adhesive bonding to the support 33 is performed. In this connected state, the lower end portion of the flange portion 21 of the flanged socket 2 is covered with the support 33, and the locking protrusion 23 provided on the back surface of the flange portion 21 is engaged with the inner wall surface of the rising tube 1. . That is, since the inner and outer walls of the rising pipe 1 are sandwiched between the locking projection 23 and the flange portion 21, even if earth pressure or the like acts on the branch pipe 22 of the flanged socket 2 from above, The collar part 21 does not peel from the wall surface.
[0014]
The above-described assembly work between parts is usually performed at a production factory, but can be performed at a construction site of piping because the assembly work is easy. As shown in FIG. 3, the drainage basin thus assembled is installed in a digging groove formed by digging up the ground. At this time, a connecting hole is drilled at an appropriate position of the riser pipe 1 to which the inflow pipe 4 is connected, and then the hooked socket 5 is adhesively bonded, and the inflow pipe 4 can be expanded and contracted to the hooked socket 5 through a seal ring. Connect to.
[0015]
Further, the branch pipe 22 of the flanged socket 2 connected to the rising pipe 1 is inserted into the outlet of the outflow pipe 6 and is connected to be stretchable through a seal ring. At the end, the lid receiving frame 7 is attached to the upper end of the riser tube 1, and the lid 8 is detachably attached to the lid receiving frame 7.
[0016]
【The invention's effect】
As described in detail above, the drainage basin of the present invention comprises a riser pipe, a socket with a hook and a hook bottom plate, and the parts can be assembled and fixed easily and securely. Moreover, even if ground changes due to an earthquake or the like occur after construction, the parts are not separated and damaged, and watertightness is ensured in a stable state for a long period of time.
[0017]
In addition, if a hook-shaped locking projection is provided on the back surface of the flange portion of the hooked socket, the inner and outer walls of the rising tube are sandwiched between the locking protrusion and the flange portion. The hooked socket is firmly bonded and joined, and even if earth pressure or the like acts on the branch pipe of the hooked socket from above, the hook does not peel from the outer wall surface of the rising pipe.
[0018]
Further, when a connection projection is provided on the back surface of the flange portion of the flanged socket, the chamfered inclined surface provided on the lower surface of the front end of the connection projection is formed with no gap between the invert surface of the bottom plate and the adhesive. Adhesive bonding.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an unfolded state of a drain according to the present invention.
FIG. 2 is a rear view of the flanged socket.
FIG. 3 is a cross-sectional view showing a state in which the drainage basin of the present invention is installed on the site.
FIG. 4 is a partially cut cross-sectional view showing a conventional drainage basin.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Standing pipe 11 Connection hole 2 Socket 21 with eaves Eaves part 3 Eaves bottom plate 31 Bottom wall 32 Cylindrical part 33 Support body

Claims (3)

The riser pipe (1), a socket with a hook (2), and a saddle bottom plate (3), a connection hole (11) is formed in the lower side wall of the riser pipe (1), and the connection hole (11 ) And the flange portion (21) of the flanged socket (2) are adhesively connected to the outer wall surface of the tube, and the flange bottom plate (3) is a cylindrical portion that hangs down from the periphery of the disk-shaped bottom wall (31) ( 32) and an annular groove (34) into which the lower end of the riser pipe (2) is fitted and bonded to the outer peripheral side of the cylindrical part (32), and adhesively bonded to the lower outer wall surface of the riser pipe (2) A cylindrical support (33) that forms an arcuate gap (35) into which the lower end of the flange (21) of the flanged socket (2) is fitted and bonded is provided. Drainage basin. A hook-shaped locking projection (23) is provided on the back surface of the flange (21) of the hooked socket (2), and a rising tube is provided between the locking protrusion (23) and the flange (21). The drainage basin according to claim 1, wherein the inner and outer walls of (1) are sandwiched. An arc-shaped connecting protrusion (24) is provided along the lower peripheral edge of the through hole (20) on the back surface of the flange (21) of the hooked socket (2), and the tip of the connecting protrusion (24) is 2. A drainage basin according to claim 1, characterized in that it protrudes slightly from the inner wall surface of the riser pipe (1), and a chamfered inclined surface provided on the lower surface of the tip is adhesively bonded to the invert surface of the bottom plate (3). .

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