JPH0756385Y2 - Cleaning device for drainage pipe - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Industrial field of application) The present invention relates to a drainage pipe cleaning device for cleaning or inspecting a drainage pipe, and is particularly installed in a place where concrete is poured. Regarding what is done.

(Prior Art) A drainage pipe in a drainage pipe installed in a residential land is provided with a cleaning port for cleaning or inspection, and the cleaning port is closed by a lid so as to be openable and closable. It has become.

Conventionally, drainage basins installed in residential areas are made of concrete or polypropylene, and the diameter of the cleaning port lid is 300 m.
It was m. However, recently, a large number of small-sized vinyl chloride resin drainage basins called invert basins have come to be used in order to prevent intrusion of unknown water or to save space. The cleaning port of this invert basin has a diameter of 100 or 150 mm, and there are various lid structures for closing the cleaning port.

As such a cleaning port device, the one described in Japanese Utility Model Laid-Open No. 63-41649 is conventionally known.
In the cleaning port device described in this publication, a lid receiving part is formed in a stepped shape on the inner peripheral side of the upper opening end of a cleaning port body formed of a synthetic resin in a cylindrical shape, and the lid receiving part is composited. A disk-shaped lid body is detachably fitted with a resin. In order to prevent sand or soil from entering, the structure is such that the diameter of the lid body receiving portion of the cleaning port body and the diameter of the lid body are almost equal to each other. Almost no gap is formed between the outer peripheral surface. This structure is not limited to the cleaning port device described in the above publication, but is generally conventional. For deodorization, for example, a rubber O-ring, which is pressed against the lid body receiving portion of the cleaning port body, is fitted to the lid body. The O ring is the inner peripheral surface of the lid body receiving portion. Is arranged at a position one step lower than the flange on the upper surface of the lid, which is in contact with the inner peripheral side.

By the way, the drainage basin as described above is usually installed on the back side of a building, but is also installed on a place such as a parking lot where concrete is struck. And conventionally, the structure which hits this concrete so that the concrete may contact the outer peripheral surface of the cleaning-mouth main body was taken. However, recently, as the material of the cleaning port main body and lid is mostly synthetic resin, especially vinyl chloride resin as described above, if the outer peripheral side of the cleaning port body is directly struck with concrete, the following problems occur. Was occurring.

That is, in summer when the temperature rises, the cleaning mouth body and lid made of synthetic resin try to expand, but especially the outer peripheral surface of the cleaning mouth body is held in contact with hard concrete, so the cleaning mouth is The main body is prevented from expanding, and only the lid body expands. As a result, the fitting between the main body of the cleaning opening and the lid may become tight, and opening and closing of the lid may be difficult.

(Problems to be Solved by the Invention) As described above, in the conventional drain pipe cleaning port device in which the cleaning port body and the lid body are made of synthetic resin, the lid body receiving portion and the lid body on the inner peripheral side of the cleaning port body are provided. And have almost the same diameter, and when concrete is struck on the outer peripheral side of the cleaning mouth main body, this concrete was struck so as to be in direct contact with the outer peripheral surface of the cleaning mouth main body, so in summer, etc. There is a problem that opening and closing of the lid may be difficult.

The present invention is intended to solve such a problem, and in the case where concrete is struck on the outer peripheral side of the synthetic resin cleaning port body in which the synthetic resin lid is fitted on the inner peripheral side. Even if it exists, it is an object of the present invention to provide a drainage port cleaning device that can always open and close the lid easily.

[Constitution of device]

(Means for Solving the Problem) In order to achieve the above object, the present invention provides a cleaning port main body made of a synthetic resin and formed in a cylindrical shape having a lid receiving portion on the inner peripheral side of an opening end, A drainage pipe cleaning device comprising: a lid made of synthetic resin that is detachably fitted to a lid receiving portion of the cleaning body to openably close the opening end. An elastic material made of rubber or the like is wound around the entire surface at least at the end on the lid receiving portion side.

(Operation) In the drainage port cleaning device of the present invention, the lid body is normally fitted to the lid receiving portion on the inner peripheral side of the cleaning port body to close the opening end of the cleaning port body. When cleaning or inspecting the drain pipe, the lid is removed from the lid receiving portion to open the opening end of the cleaning port body. By the way, when concrete is struck on the outer peripheral side of the cleaning port main body, the lid expands when the temperature rises in summer etc., but even if the lid is fitted in the lid receiving portion without a gap, Since the elastic material is provided over the entire circumference between the concrete and at least the end portion on the lid receiving portion side on the outer peripheral surface of the cleaning opening main body, the elastic material is pushed by the cleaning opening main body to be elastic. While being contracted, at least the end portion of the outer peripheral surface of the cleaning port body on the side of the lid receiving portion also expands similarly to the lid. This prevents the lid from being tightly fitted to the cleaning port body, and prevents the lid from opening and closing with difficulty.

(Embodiment) Hereinafter, the construction of an embodiment of the cleaning device for a drain pipe of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a connection port for a drainage basin in a drainage pipe buried in the ground, and the connection port 1 has a cylindrical shape with open upper and lower end surfaces. The drainage basin having the connection port 1 is made of synthetic resin such as vinyl chloride resin. In addition, 2 is concrete hit on the ground surface.

Reference numeral 11 denotes a cleaning port body, which is made of synthetic resin such as vinyl chloride resin and is integrally formed into a substantially cylindrical shape with its upper and lower end surfaces opened. And this cleaning body 11
A lid receiving portion 12 is formed on the inner peripheral side over the entire circumference at the upper open end of the, and a flange 13 is formed on the outer peripheral side. An annular fitting step portion 14 is formed on the inner peripheral side of the flange 13. This fitting step portion 14 is
It forms an upper part of the lid receiving portion 12, has a horizontal bottom surface and an inner peripheral surface rising from the outer peripheral edge of the bottom surface, and has a substantially L-shaped cross section. Also, this mating step
A plurality of engaging protrusions 15 arranged in the circumferential direction are formed on the inner peripheral surface of the cleaning port main body 11 adjacent to the lower part of the cleaning port main body 11. These engaging ridges 15 are respectively inclined in the same direction,
It has a threaded shape as a whole, and has stepped locking portions (not shown) facing the same direction on the lower surface.

Reference numeral 21 is a lid, and the lid 21 is integrally molded of a synthetic resin such as acrylonitrile / butadiene / styrene resin into a substantially disc shape.
It is removably fitted into the inside of the cleaning port body 11 so as to openably and closably close the upper opening end of the cleaning port body 11. Further, the lid body 21 has a flange 22 fitted on the fitting step portion 14 of the cleaning port main body 11 on the upper surface portion, and this flange 21
The portion below 22 is the lid receiving portion 12 of the cleaning port body 11.
It is a cylindrical portion 23 inserted in the lower part of the.

The outer diameter of the flange 22 of the lid 21 is substantially equal to the diameter of the inner peripheral surface of the fitting stepped portion 14 above the lid receiving portion 12 of the cleaning port body 11. In addition, the cylindrical portion of the lid 21
The outer diameter of 23 is slightly smaller than the inner diameter of the lower portion of the lid receiving portion 12 of the cleaning port main body 11, and the outer peripheral surface of the cylindrical portion 23 of the lid 21 and the lid receiving of the cleaning port main body 11. A gap 24 is formed between the inner peripheral surface of the lower portion of the portion 12.

Further, on the lower portion of the outer peripheral surface of the cylindrical portion 23, there are formed engagement protrusions 25 that are engageably and disengageably engaged with the engagement protrusions 15 of the cleaning port body 11 by the rotation of the lid body 21. There is. further,
A linear concave groove 26 is formed on the upper surface side of the lid body 21, and continuous recesses 27 are formed at both ends of the concave groove 26.

An annular fitting groove 28 is formed on the outer peripheral surface of the lid 21 and below the flange 22 over the entire circumference. An annular O-link 31 is fitted in the fitting groove 28. The O-ring 31 is made of synthetic rubber such as ethylene / propylene resin and has elasticity, and is press-contacted to the inner peripheral edge of the bottom surface of the fitting stepped portion 14 of the lid 21 so that the O-ring 31 can come into contact with and separate from the inner peripheral edge portion. It is a thing. The O-ring 31 is
It may be attached to the cleaning port body 11 instead of the lid body 21.

32 is a sheet-like elastic material made of rubber or the like.
The height 32 is substantially the same as that of the cleaning port body 11, and is wound around the outer peripheral surface of the flange 13 of the cleaning port body 11 and the outer peripheral surface of the connection port 1 all around. .

Then, when installing the drainage basin, the cleaning body
The lower part of the flange 13 is fitted to the inner peripheral side of the connection port 1 of the drainage basin. An elastic material 32 is wound around the outer peripheral surfaces of the connection port 1 and the flange 13 of the cleaning port body 11. Further, concrete 2 is struck so as to wind the outer peripheral surface of the elastic material 32.

Next, the operation of the above embodiment will be described.

Normally, the lid body 21 is fitted into the lid body receiving portion 12 of the cleaning port body 11 to close the upper opening end of the cleaning port body 11. Lid 21
In order to close, the lid 21 is placed on the cleaning port body 11 and a tool is inserted into the groove 26 of the lid 21, or both the recesses 27
The lid 21 is rotated in one direction by inserting a fingertip into. Then, the respective engagement protrusions 25 of the lid 21 will be
While sliding on each of the slanted engaging projections 15, the lid body 21 descends, and each engaging projection 25 is guided to the lower side of each adjacent engaging projection 15. The abutment portions on the lower surface of the strip 15 are brought into contact with each other. As a result, the lid 21 is securely locked to the cleaning port body 11.

In this state, the O-ring 31 of the lid 21 is pressed against the inner peripheral edge of the bottom surface of the fitting stepped portion 14 of the cleaning port main body 11 by the screw action by the engagement between the engagement protrusion 15 and the engagement protrusion 25. Thus, the airtightness between the cleaning port main body 11 and the lid 21 is reliably maintained. This prevents leakage of bad odors and intrusion of rainwater from the inside of the cleaning port body 11.

When the drain pipe is cleaned or inspected, the lid body 21 is removed from the lid body receiving portion 12 of the cleaning port body 11 to open the upper opening end of the cleaning port body 11. To open the lid 21,
First, the lid 21 is rotated in the direction opposite to that when it is closed. Then, while the engaging protrusions 25 of the lid 21 slide along the inclined engaging protrusions 15 of the cleaning port body 11, the lid 21 rises, but the engaging protrusions 25 engage with each other. If the lid 21 is lifted while being detached from the lower side of the ridge 15,
21 is detached from the cleaning port body 11.

By the way, for example, when the temperature rises in summer,
The lid 21 and the cleaning port body 11 expand. At this time, although the concrete 2 exists on the outer peripheral side of the cleaning port body 11 and the connection port 1, the elastic material 32 is interposed between the concrete 2 and the outer peripheral surface of the cleaning port body 11 and the connection port 1 over the entire circumference. Therefore, the elastic member 32 is pushed by the cleaning port body 11 and the connection port 1 and elastically contracted, so that the cleaning port body 11 and the connection port 1 can be expanded similarly to the lid body 21. Therefore, the fitting between the lid 21 and the cleaning port body 11 does not become tight, and opening and closing of the lid 21 does not become difficult. That is, the lid 21 can always be easily opened and closed regardless of the temperature and the like, and the weatherability is improved.

When the temperature drops and the cleaning port body 11 and the connection port 1 contract, the elastic material 32 elastically expands, so that there is no gap between the concrete 2 and the cleaning port body 11 and the connection port 1. .

Further, since the outer diameter of the flange 22 of the lid body 21 and the diameter of the inner peripheral surface of the fitting stepped portion 14 above the lid body receiving portion 12 of the cleaning port body 11 are substantially equal to each other, the lid body 21 and the cleaning are There is no possibility that sand or soil will get in the gap with the mouth body 11 and become clogged.

In the above embodiment, the elastic member 32 is wound around the entire outer peripheral surface of the cleaning port body 11 via the connection port 1 on the lower side, but the lid plate 21
Since only the lid receiving portion 12 on the upper portion of the cleaning port main body 11 is related to opening and closing of, the elastic material 32 may be wound only on the upper portion of the cleaning port main body 11. Further, in order to prevent the intrusion of earth and sand, since it is sufficient that no gap is formed between the flange 22 on the upper portion of the lid 21 and the fitting step portion 14 of the cleaning port body 11, as in the above embodiment, If a gap 24 is formed in the radial direction between the outer peripheral surface of the lower cylindrical portion 23 of the lid body 21 and the inner peripheral surface of the cleaning port main body 11, the fitting stepped portion 14 in the cleaning port main body 11 is formed. Even if the elastic material 32 is wound only on the outer peripheral surface of the flange 13,
The effect of enhancing the opening / closing property of 21 is obtained. This is because the gap 24 becomes a relief for the expansion of the cylindrical portion 23 of the lid body 21.

Furthermore, the drain pipe cleaning port device can of course be installed in a place where concrete cannot be hit.

Further, the cleaning port body may be one that is fitted to the outer peripheral side of the connection port of the drainage basin.

[Effect of device]

ADVANTAGE OF THE INVENTION According to this invention, in the outer peripheral surface of the synthetic resin cleaning port main body which has the lid body receiving part in which the synthetic resin lid body is fitted, it is elastic to at least the edge part at the side of the lid body receiving part. Since the material is wound around the entire circumference, the lid and lid receiving part have the same diameter to prevent dirt and sand from entering between the lid and the cleaning port body, and the cleaning Even if concrete is struck on the outer peripheral side of the mouth main body, when the temperature rises in the summer etc., the elastic material is interposed between the concrete and the cleaning mouth main body, so that the cleaning mouth is the same as the lid body. The main body can also be inflated, and therefore, the fitting between the cleaning port main body and the lid does not become tight, and the lid can always be easily opened and closed.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the drainage pipe cleaning port device of the present invention, FIG. 2 is a plan view of the same, and FIG. 1 is a sectional view taken along line I--I of FIG. 11 …… Cleaning port body, 12 …… Lid body receiving part, 21 …… Lid body, 32
…… Elastic material.

Claims (1)

[Scope of utility model registration request] 1. A cleaning port main body made of a synthetic resin and formed in a cylindrical shape having a lid receiving part on the inner peripheral side of an opening end, and a lid receiving part of the cleaning port main body detachably fitted. And a lid made of synthetic resin that occludes the opening end so as to open and close freely, and an elastic material is wound around the entire periphery of the cleaning opening body at least at the end on the lid receiving portion side. A cleaning device for a drain pipe, which is characterized in that