JP5706659B2 - Cleaning port lid in drainage pipeline - Google Patents

Description

  The present invention relates to a cleaning port lid in a drain pipe, and more particularly to a cleaning port lid for closing an opening of a cleaning pipe connected to a drain pipe.

  As shown to Fig.4 (a), the S-shaped trap 52 is provided in the drainage pipe 51 (branch pipe) connected to each facility 50 (for example, a sink and a bathtub) in the house which discharges water. The odor in the drain pipe 51 is configured not to flow backward to the equipment 50 side. In addition, a drainage basin 54 is installed at a connection point between each drainage pipe 51 and a drainage main pipe (not shown) buried in the ground. A U-shaped trap 55 may be provided so that odors do not flow into the drainage pipe 51 side. A cleaning pipe 56 is connected to the trap 55 of the drainage basin 54. The cleaning pipe 56 extends to the ground surface, and its upper end opening is closed by a cleaning port lid 57.

  By the way, when the traps 52 and 55 are respectively provided in the indoor facility 50 and the outdoor drainage basin 54, a so-called double trap is formed, and the air is sealed between the traps 52 and 55. For this reason, when water is discharged from the facility 50 in the building, the air between the traps 52 and 55 is compressed, and the sealed water by the trap 55 on the drainage basin 54 side is destroyed or the drainage becomes difficult to flow. There was a problem. In addition, after the water has flowed out, the drainage pipe 51 between the traps 52 and 55 becomes negative pressure, so that the sealed water by the indoor trap 52 is destroyed or abnormal noise due to the negative pressure is generated. There was also a problem of losing.

  If a vent hole is provided in the cleaning port lid 57, it is possible to suppress fluctuations in the air pressure between the traps 52, 55. Since the ground surface A communicates with the ground surface, rainwater on the ground surface A flows into the drainage basin 54 through the cleaning pipe 56, and as a result, the amount of water to be treated as sewage increases.

  Then, as shown, for example in FIG.4 (b) (refer patent document 1), the air vent apparatus 61 which can suppress that rainwater flows in from a vent hole is proposed. More specifically, a fitting insertion hole 63 penetrating in the vertical direction is provided in the lid body 62 of the cleaning port lid 60, and an air vent 65 having a T-shaped air passage 64 is disposed through the fitting insertion hole 63. Is. In particular, the air vent body 65 includes a flat main body portion 66 and a cylindrical air passage pipe portion 67 projecting downward from the center of the main body portion 66. The rainwater is prevented from flowing into the ventilation path 64 by being inclined downward toward the peripheral surface.

  However, according to the cleaning port lid 60 described above, the main body portion 66 of the air vent body 65 protruding from the ground surface A has a flat shape, and the air passage 64 of the main body portion 66 opens to the peripheral surface. In addition, there is a high possibility that the water will be flooded to a height exceeding the air passage 64, and a large amount of rainwater will flow into the air passage 64 when flooded. If the height of the main body portion 66 is increased and the position of the air passage 64 is increased, the possibility of rainwater flowing in can be reduced. However, with this configuration, the main body portion 66 is greatly increased from the ground surface A. A new problem arises that protrudes and makes it easier for pedestrians to whisper.

  Then, in view of said actual condition, this invention makes it a subject to provide the lid | cover for cleaning ports in the drainage pipe line which can prevent the inflow of rainwater effectively while improving the safety of a pedestrian even in the case of heavy rain. Is.

The lid for the cleaning port in the drainage pipe of the present invention is
“A cover for a cleaning port that is attached to an upper end opening of a cleaning pipe connected to an underground drainage pipe and extending upward,
A frame-like lid frame;
A lid body that is detachably fitted in the lid frame, and has a through-hole penetrating in the vertical direction in the center;
An upper vent opening near the upper end, a lower vent opening opened on the lower surface, and the upper side inserted into the through hole of the lid body and supported so as to be movable in the vertical direction between the upper limit position and the lower limit position A movable air vent member formed therein with a communication hole communicating the vent hole and the lower vent hole;
A support member that supports the movable air vent member at least at the upper limit position and the lower limit position ;
The movable air vent member is
Regardless of the movable position, the upper vent is located above the lid body,
It further includes an overhanging portion that protrudes radially outward from the lower outer peripheral surface of the upper vent, larger than the through hole. ''
It is characterized by this.
Moreover, in the lid for the cleaning port in the drain pipe of the present invention,
“The overhang is
It has an umbrella shape with an upper surface that is inclined downward toward the outside. ''
It is characterized by this.
Furthermore, in the lid for the cleaning port in the drain pipe of the present invention,
"The support member is
The movable air vent member is held ".

  Here, the “drainage pipe” includes a U-shaped trap connected to a drainage basin. Further, it is preferable that the “lid body” has the upper surface height matched with the height of the upper surface of the lid frame. Further, the “movable air vent member” preferably includes a stopper for restricting the movement range between the upper limit position and the lower limit position. Note that “inserted into the through hole” includes a case where the tube is directly inserted into the through hole, or a case where a cylindrical sleeve is provided in the through hole and the tube is inserted into the sleeve. Examples of the “support member” include an annular packing (O-ring or the like) interposed between the through hole of the lid body and the movable air vent member. In this case, the “packing” is attached to the inner peripheral surface of the through hole of the lid body (the inner peripheral surface of the sleeve is provided with a sleeve) so as to be in sliding contact with the outer peripheral surface of the movable air vent member. Alternatively, it may be attached to the outer peripheral surface of the movable air vent member (excluding the upper vent portion) and arranged so as to be in sliding contact with the inner peripheral surface of the through hole (or the inner peripheral surface of the sleeve). Further, the upper vent is only required to be opened in such a direction that rainwater does not flow in, and may be opened in any of the horizontal direction, the downward gradient toward the outside, and the downward direction. The “near the upper end” where the upper vent is formed is preferably the upper end of the outer peripheral surface of the movable air vent member that can be opened in the horizontal direction, but may be a position 2 to 3 mm lower than the upper end.

  According to the cleaning port lid of the present invention, the lid body fitted in the lid frame is provided with a through hole in the center, and a movable air vent member is inserted into the through hole. The movable air vent member is formed with an upper vent opening in the vicinity of the upper end, a lower vent opening in the lower surface, and a communication hole communicating the upper vent and the lower vent. Therefore, in a state where the upper vent protrudes from the upper surface of the lid body, the internal space of the cleaning pipe communicates with the outside of the cleaning pipe (that is, the ground portion) through the lower vent, the communication hole, and the upper vent. The fluctuation of the air pressure in the drain pipe can be suppressed.

  The movable air vent member is supported so as to be movable in the vertical direction between the upper limit position and the lower limit position. When the movable air vent member is moved to the lower limit position, the amount of protrusion of the movable air vent member from the ground surface can be kept small, and as a result, it is possible to prevent the pedestrian from hitting the movable air vent member as much as possible. In this case, the height of the upper vent is reduced. However, by opening the upper vent in a substantially horizontal direction or downward, not only when it is not raining, it is not flooded even if it is raining. In some cases (that is, in a normal use state), rainwater can be prevented from flowing in. On the other hand, if there is a risk of flooding to a position higher than the height of the upper vent due to heavy rain or the like, the movable air vent member may be moved upward. According to this, the position of the upper vent becomes high, and the possibility of rainwater flowing into the upper vent can be greatly reduced.

  Moreover, since the support member is provided, the movable air vent member can be held at the upper limit position or the lower limit position. When an annular packing is interposed as the support member, the water tightness between the inner peripheral surface of the through-hole (the inner peripheral surface when a sleeve is provided) and the outer peripheral surface of the movable air vent member is increased, It is possible to prevent rainwater from entering the inside of the cleaning tube from around the movable air vent member and to increase the sliding resistance of the movable air vent member.

  According to the cleaning port lid in the drain pipe of the present invention, the movable air vent member is arranged such that the upper vent is located above the lid body even when the movable air vent member moves to the lower limit position. For this reason, it is possible to prevent dirt and the like from entering the upper vent hole that opens in the horizontal direction, and it is possible to pick up the upper end portion of the movable air vent member and hook the tool, and the pulling up operation of the movable air vent member is easy. become. At this time, the movable air vent member is always arranged in a state of protruding from the upper surface of the lid body, but by setting the position of the movable air vent member at the lower limit position to a minimum height, the pedestrian It is possible to suppress whispering.

  Further, a projecting portion that projects outward in the radial direction is provided on the lower side of the upper vent in the movable air vent member. For this reason, at the lower limit position, the lower surface of the overhanging portion and the upper surface of the lid main body are in contact with each other so as to cover the periphery of the through hole, thereby preventing rainwater from entering the through hole side and the normal use position. Therefore, the movable air vent member can be stably supported at the lower limit position. Furthermore, the outer shape of the movable air vent member can be shown larger when viewed from above, and the presence and state of the movable air vent member can be easily recognized.

  In addition, since the upper surface of the overhanging portion is formed in a downward slope toward the outside, the rainwater that has fallen on the upper surface of the movable air vent member is guided toward the outside, and the inflow of rainwater to the upper vent is more effectively performed. Can be prevented. Moreover, since the outer edge part of a movable air vent member becomes thin, it becomes possible to further suppress a pedestrian's whisper.

  As described above, according to the present invention, in a normal use state, by moving the movable air vent member to the lower limit position, the amount of protrusion of the movable air vent member can be suppressed, and a pedestrian can reach the movable air vent member. Can be prevented as much as possible. Also, if there is a risk of flooding to a position higher than the height of the upper vent at the lower limit position due to heavy rain or the like, the position of the upper vent is increased by moving the movable air vent member upward, and the upper vent The possibility of rainwater flowing into the mouth can be greatly reduced.

It is a disassembled perspective view which shows the structure of the lid | cover for cleaning openings of this embodiment. It is sectional drawing which shows the structure of the lid | cover for cleaning openings, and operation | movement of a movable air vent member. It is sectional drawing which shows the structure of the lid | cover for cleaning openings of another example, and operation | movement of a movable air vent member. (A) is a conceptual diagram which shows the whole drainage system structure, (b) is sectional drawing which shows the conventional lid | cover for cleaning openings.

  Hereinafter, a lid for a cleaning port according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. The cleaning port lid 1 is attached to the upper end opening 56a of the cleaning tube 56 (see FIG. 4A), the lid frame 2 fixed to the upper end opening 56a of the cleaning tube 56, and the lid frame 2. The lid body 3 is detachably fitted into the inside of the lid body 3 and has a through hole 14 in the center thereof, the substantially cylindrical sleeve 4 which is fitted in the through hole 14 and bonded thereto, and the through hole 17 of the sleeve 4. In addition, the internal space of the cleaning pipe 56 is communicated with the ground portion, so that the movable air vent member 5 that suppresses the pressure fluctuation in the cleaning pipe 56 is interposed between the through hole 17 of the sleeve 4 and the movable air vent member 5. And a packing 6. Hereinafter, each configuration will be described in detail.

  The lid frame 2 is a synthetic resin member having a substantially cylindrical shape, and a thick portion 8 projecting outward is formed on the upper side thereof. Further, an annular groove portion 9 is formed at the upper end of the inner peripheral surface of the lid frame 2 to support the disc body 11 (described later) of the lid body 3 in a state in which it is accommodated. The lid frame 2 is attached so that the height of the upper surface coincides with the ground surface A (see FIG. 4A).

  The lid body 3 is made of synthetic resin, like the lid frame 2, and includes a disk-shaped disk portion 11 and a substantially cylindrical hanging cylinder portion 12 that is suspended downward from the bottom surface of the disk portion 11. I have. Note that the thickness of the disc portion 11 is equal to the depth of the annular groove portion 9 in the lid frame 2, and when the lid body 3 is fitted into the annular groove portion 9 of the lid frame 2, the height of the upper surface of the lid frame 2 is the same. It corresponds to the height of the upper surface of the lid body 3. A pair of notches 15 are formed on the outer peripheral edge of the upper surface 16 of the lid body 3 at positions facing each other, and a tool such as a screwdriver is inserted into the notch 15 so that the lid body 3 is attached to the lid frame. 2 can be removed. A through-hole 14 that penetrates in the vertical direction is provided at the center of the lid body 3.

  The sleeve 4 is a cylindrical member having a through-hole 17 inside, and a hook-shaped hooking portion 18 is formed at the upper end. Further, an annular protrusion 19 projecting toward the center is formed on the upper inner peripheral surface of the sleeve 4.

  The movable air vent member 5 is made of synthetic resin, and is inserted into the through hole 17 of the sleeve 4 so as to penetrate the lid body 3. The lower limit position (see FIG. 2A) and the upper limit position (FIG. 2B). Reference) is supported so as to be movable in the vertical direction. The movable air vent member 5 includes a substantially cylindrical shaft portion 20, and a pair of upper vent holes 23 that are open in the horizontal direction are formed in the vicinity of the upper end of the shaft portion 20. A lower vent 24 is formed in the shaft portion 20, and a communication hole 25 for communicating the upper vent 23 with the lower vent 24 is formed in the shaft portion 20. That is, the shaft portion 20 is formed with a substantially T-shaped passage so that the upper side and the lower side of the lid body 3 communicate with each other.

  Further, an umbrella-shaped projecting portion 21 is provided on the shaft portion 20 on the lower side of the upper vent 23 so as to project outward in the radial direction. The diameter of the overhanging portion 21 is larger than the inner diameter of the through hole 17 and acts as an upper stopper that regulates the lower limit position of the movable air vent member 5. In addition, the upper surface of the overhanging portion 21 is formed with a downward slope toward the outside, and rainwater that has fallen on the upper surface of the overhanging portion 21 is guided outward.

  A flange-like lower stopper 22 is formed at the lower end portion of the shaft portion 20. The diameter of the lower stopper 22 is substantially equal to the inner diameter of the through hole 17 of the sleeve 4, and when the movable air vent member 5 is moved upward, it comes into contact with the bottom surface of the protruding portion 19 in the sleeve 4 (precisely, The upper limit position is regulated by contact through the packing 6.

  By the way, the overhanging portion 21 of the movable air vent member 5 is formed larger than the through hole 17 of the sleeve 4, and the lower stopper 22 of the movable air vent member 5 is formed larger than the inner diameter of the protruding portion 19. In the case where the member 5 is integrally molded, it cannot be inserted into the through hole 17. Therefore, the movable air vent member 5 of this example is divided into an upper part 5a above the overhanging part 21 and a cylindrical lower part 5b positioned below the overhanging part 21 and screwed by a screw part 26. It is the composition which becomes.

  The packing 6 is composed of an O-ring, and is attached to the outer peripheral surface of the shaft portion 20 (particularly directly above the lower stopper 22) of the movable air vent member 5 and is in sliding contact with the inner peripheral surface of the through hole 17 in the sleeve 4. Is provided. Thereby, the watertightness between the inner peripheral surface of the through-hole 17 and the outer peripheral surface of the shaft part 20 is enhanced, and rainwater is prevented from entering the lid body 3 from around the shaft part 20. It has become. Further, by interposing the packing 6, the sliding resistance of the movable air vent member 5 with respect to the through hole 17 of the sleeve 4 is increased, and the movable air vent member 5 can be held at an arbitrary height.

  Next, the effect | action of the lid | cover 1 for cleaning openings of this embodiment is demonstrated. The movable air vent member 5 fitted in the sleeve 4 includes an upper vent 23 that opens horizontally in the vicinity of the upper end, a lower vent 24 that opens downward on the lower face, the upper vent 23 and the lower vent. Since the communication hole 25 that communicates with 24 is formed, the internal space of the cleaning pipe 56 communicates with the outside, and fluctuations in air pressure in the drainage pipe 51 are suppressed. Further, even when the upper vent 23 is moved to the lower limit position, it is disposed so as to be located above the lid body 3 and is opened in the horizontal direction. Is suppressed.

  Further, the movable air vent member 5 is supported so as to be movable in the vertical direction, and when it is not raining, or when it is raining but is not flooded (that is, in a normal use state), heavy rain or the like It is possible to change the usage mode when there is a possibility of flooding to a position higher than the height of the upper vent 23 (ie, in an emergency). More specifically, in a normal use state, there is no possibility of rainwater flowing in even if the height of the upper vent 23 is low, and therefore the movable air vent member 5 can be moved to the lower limit position (see FIG. 2A). preferable. According to this, the protrusion amount from the ground surface A of the movable air vent member 5 becomes small, and it is possible to prevent the pedestrian from hitting the movable air vent member 5 as much as possible. In particular, since the upper surface of the overhang portion 21 in the movable air vent member 5 is formed in a downward slope toward the outside, the outer peripheral portion becomes the lowest, and the safety of the pedestrian can be further enhanced. On the other hand, when there is a possibility of flooding to a position higher than the height of the upper vent 23, it is preferable to move the movable air vent member 5 to the upper limit position (see FIG. 2B). According to this, the position of the upper vent 23 becomes higher, and the possibility of rainwater flowing into the upper vent 23 is greatly reduced. In this example, the height of the upper vent 23 is set to 5.5 mm when the movable air vent member 5 is at the lower limit position, and to 15.5 mm when the upper vent position is at the upper limit position. That is, even if the ground surface A is submerged to a height of 15.5 mm, the water does not flow into the upper vent 23.

  As described above, according to the cleaning port lid 1 of the first embodiment, the amount of protrusion of the movable air vent member 5 can be reduced during normal use, and pedestrian safety can be improved. On the other hand, in an emergency, the inflow of rainwater can be prevented as much as possible by pulling up the movable air vent member 5.

  Further, according to the cleaning port lid 1 of this example, since the annular packing 6 is interposed between the through hole 17 and the shaft portion 20 of the movable air vent member 5, the sliding resistance of the shaft portion 20 is reduced. The movable air vent member 5 can be held at an arbitrary height. In particular, since the movable air vent member 5 is held without providing a complicated holding mechanism, the movable air vent member 5 can be configured at low cost, and it is possible to suppress the occurrence of a failure due to soil intrusion or the like. Further, since the movable air vent member 5 is held by the frictional force of the packing 6, even if the movable air vent member 5 is used at the upper limit position, even if it is stepped on by a pedestrian, the movable air vent member 5 is It can be moved naturally to the lower limit position, and as a result, damage and destruction of the movable air vent member 5 due to the load can be suppressed.

Then, although it is not embodiment of this invention, the lid | cover 30 for cleaning openings of 2nd embodiment is demonstrated based on FIG. The cleaning port cover 30 of this example has the same configuration as the cleaning port cover 1 of the first embodiment, and is fitted into the cylindrical cover frame 31 and the cover frame 31 and has a through-hole 33 in the center. A lid body 32 provided with a sleeve 34, a sleeve 34 inserted into and bonded to the through-hole 33, a movable air vent member 35 slidable in the vertical direction with respect to the sleeve 34, and watertightness of the outer periphery of the movable air vent member 35. An annular packing 36 for raising is provided.

  However, the movable air vent member 35 is not provided with an umbrella-like overhanging portion. Instead, a flange portion 44 having a diameter slightly larger than the diameter of the shaft portion 43 is formed at the upper end portion of the shaft portion 43. A pair of upper vent holes 46 are provided on the peripheral surface of the flange portion 44. In addition, the structure of the lower vent 47, the communication hole 48, and the lower stopper 45 is the same as that of the movable air vent member 5 of the first embodiment.

  On the other hand, the sleeve 34 has a substantially cylindrical shape, but is provided with a hook-shaped hooking portion 38 at the upper end so as to be hooked by a receiving portion 33 a formed at the upper end of the through hole 33. It has become. In addition, a concave portion 39 that accommodates the flange portion 44 of the movable air vent member 35 is formed in the upper portion of the sleeve 34 so that the upper surface of the movable air vent member 35 coincides with the height of the upper surface of the lid body 32. The diameter of the flange portion 44 and the inner diameter of the concave portion 39 are substantially equal to each other, but only the peripheral surface portion of the flange portion 44 in which the upper vent 46 is formed has a shape cut out in the vertical direction. A ventilation gap 49 having an open upper side is provided between the upper vent 46 and the inner peripheral surface of the recess 39.

  Thus, according to the cleaning port lid 30 of the second embodiment, when the movable air vent member 35 moves to the lower limit position (see FIG. 3A), the height of the upper surface of the movable air vent member 35 is the lid body. Since it corresponds to the height of the upper surface of 32, the movable air vent member 35 can be used without protruding from the lid body 32 during normal use, and as a result, a pedestrian can be reliably prevented from hitting the movable air vent member 35. It becomes possible to do. Further, since a ventilation gap 49 is provided between the inner peripheral surface of the recess 39 and the upper vent 46, the flange 44 opens in the horizontal direction even when it is accommodated in the recess 39. Air can flow through the upper vent 46. On the other hand, when the movable air vent member 35 is moved to the upper limit position (see FIG. 3B), the position of the upper vent 46 is increased, and the possibility of rainwater flowing into the upper vent 46 is greatly reduced. be able to.

  The present invention has been described with reference to preferred embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention as described below. And design changes are possible.

  That is, in the first embodiment and the second embodiment, the annular packings 6 and 36 are provided as support members, and the movable air vent members 5 and 35 are slid in the vertical direction against the frictional resistance of the packings 6 and 36. As shown, a male screw is formed on the outer peripheral surface of the movable air vent member, a female screw is formed on the inner peripheral surface of the sleeve, and the movable air vent member is screwed to the sleeve to move in the vertical direction. You may do it. In this case, the combination of the male screw and the female screw corresponds to the support member of the present invention, and the packing 6 can be omitted.

  In the first embodiment and the second embodiment, two upper vents 23, 46 are provided. However, the number of the upper vents 23, 46 is not particularly limited, and one upper vent 23, 46 is provided. Or three or more.

  In the first embodiment, the outer diameter of the projecting portion 21 of the movable air vent member 5 is made smaller than the outer diameter of the lid body 3, but the outer diameter of the lid body 3 is made larger. Also good. According to this, the entire lid body 3 is covered by the overhanging portion 21, and it is possible to further prevent the inflow of rainwater between the sleeve 4 and the movable air vent member 5.

  In the second embodiment, the upper surface of the movable air vent member 35 is shown as a plane. However, a recess may be formed on the upper surface, and a knob may be provided in the recess. According to this, the movable air vent member 35 can be pulled up by holding the knob, and the operation becomes easy. In this case, since the knob is formed in the recess, the knob can be formed without protruding from the ground surface.

  Further, in the first embodiment and the second embodiment, the sleeves 4 and 34 are attached to the lid bodies 3 and 32, and the movable air vent members 5 and 35 are inserted into the through holes 17 of the sleeves 4 and 34. However, the movable air vent members 5 and 35 may be directly fitted into the through holes 14 and 33 of the lid main bodies 3 and 32 without providing a sleeve.

1,30 Cleaning port lid 2,31 Lid frame 3,32 Lid body 5,35 Movable air vent member 6,36 Packing (support member)
14, 17, 33 Through-hole 16 Upper surface 21 Overhang portion 23, 46 Upper vent 24, 47 Lower vent 25, 48 Communication hole 39 Recess 44 Flange portion 49 Clearance 51 Drain pipe 56 Cleaning pipe

JP 09-328793 A

Claims (3)

A cleaning port lid attached to an upper end opening of a cleaning pipe connected to a drainage pipe in the ground and extending upward,
A frame-like lid frame;
A lid body that is detachably fitted in the lid frame, and has a through-hole penetrating in the vertical direction in the center;
An upper vent opening near the upper end, a lower vent opening opened on the lower surface, and the upper side inserted into the through hole of the lid body and supported so as to be movable in the vertical direction between the upper limit position and the lower limit position A movable air vent member formed therein with a communication hole communicating the vent hole and the lower vent hole;
A support member that supports the movable air vent member at least at the upper limit position and the lower limit position ;
The movable air vent member is
Regardless of the movable position, the upper vent is located above the lid body,
The cleaning port lid in the drain pipe further comprising an overhanging portion that protrudes radially outward from the outer peripheral surface of the lower side of the upper vent to the radial direction . The overhanging portion is
Cleaning Port lid in the drainage pipe according to claim 1 upper surface is characterized that you have been umbrella shape formed downward slope toward the outside. The support member is
The cleaning port lid in the drain pipe according to claim 1 or 2 , wherein the movable air vent member is held .

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