JPH0728202Y2 - PVC lid for small-diameter mass - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PVC lid for a small-diameter mass used in drainage facilities.

[0002]

2. Description of the Related Art At present, all the components of a drainage facility in a residential area have been assembled from hard vinyl chloride products. On the other hand, plastic molding, including PVC products,
1) High machining accuracy of each component that makes up the mold 2)
The molded product is cooled uniformly, 3) the design of the flow mechanism such as the gate is improved, 4) the operation of each part of the mold is reliably performed in each molding cycle, and 5) the long-term operation. Due to the fact that there is little deviation of the mold during operation, high precision molded products can be made. This is
The drainage facility made of PVC in the residential area is no exception, and for the on-site construction drainage facility that was mainly done manually by craftsmen,
It has had a very good influence. For example, in order to clean the drain pipe laid on the floor of a house or the floor of a garage, etc. from the floor, the opening of the cleaning pipe installed upright,
A ring-shaped outer frame is fixed, and a coin-shaped lid is dropped into this outer frame to fit inside. In addition, since the outer frame and lid are sealed to prevent water and odors, they are fitted together. An elastic member is interposed in the portion (for example, Japanese Utility Model Publication No. 62-430).
No. 10, JP 60-29513 JP, JP 58
-35742, etc.). By the way, if the outer frame and the lid are made of PVC, it will be as follows. That is, FIG.
As shown in FIG. 1, a mass body 2 made of a vinyl chloride pipe is internally fitted and erected on the small-diameter mass invert 1, and a stepped portion 3a of a ring-shaped outer frame 3 is provided at an upper opening of the mass body 2. It is fitted in and fixed with an adhesive, and a coin-shaped lid 4 is fitted in the outer frame 3 in a drop-type manner.
In addition, since they are molded with high precision by injection molding, water and odor can be completely stopped at these fitting portions without interposing the elastic member. However, even if the drainage facility made of vinyl chloride in the residential area becomes highly accurate by itself, inconvenience may occur at the boundary between the drainage facility made of vinyl chloride and the facility or member made of other material. is there. For example, since the outer frame 3 and the lid 4 shown in FIG. 2 are molded with high precision and are in close contact with each other, when the lid 4 is opened, the driver-insertion notch provided at the upper edge of the inner side surface of the outer frame 3 is opened. Although the driver is inserted into 5 to pry it open, the outer frame 3 may be cracked when the driver is inserted and pryed. Analyzing the cracking phenomenon, 1) the lid 4 and the outer frame 3 are molded with high precision, so there is no room for molding errors, etc. 2) tiles and mortar around the outer frame 3 Is cast and is completely fixed, that is, the outer frame 3 made of PVC has a linear expansion coefficient of 7 to 8 × 10 ⁻⁵ , and the mortar has a linear expansion coefficient of 9 to 13 × 10 ⁻⁶ . Expansion coefficient is 10
About 2 times different materials are adhered, 3) It is installed in places with severe heat such as day and night, 4) Mortar shrinks over time, etc. If a prying force by the driver is applied to this phenomenon, the strain exceeds the elastic limit and the outer frame 3
Is thought to break. Therefore, it is conceivable that an elastic member is interposed between the outer frame 3 and the lid 4 as described in the above-mentioned publication so that the strain due to the internal stress of the lid 4 is absorbed by this elastic member. It cannot be adopted because it impairs the functions of the lid 4 and the outer frame 3 which are accurately formed.

The present invention was devised in order to prevent the above-mentioned cracking of the outer frame. The gist of the present invention consists of a PVC invert buried in the ground and a PVC pipe. The mass main body is erected and adhesively bonded, the ring-shaped outer frame is adhesively bonded to the upper opening of the mass main body, and the outer side surface of the coin-shaped lid is closely attached to the inner side surface of the outer frame so as to be detachably fitted. Then, in a drainage facility in which a driver-insertion notch is provided at the upper edge of the inner surface of the outer frame, and the periphery of the outer frame is solidified and embedded in mortar, a band made of an elastic material is integrally formed on the outer surface of the outer frame. A cover made of vinyl chloride for a small-diameter mass, characterized in that the outer periphery of the strip is solidified with the mortar.

[0004]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings. FIG. 1 is a cross-sectional view of an embodiment of the present invention. The same parts as those in FIG. 2 showing a conventional example are designated by the same reference numerals and common parts are omitted. The mass main body 2 of the present embodiment is a PVC pipe having a diameter of 150 to 350 mmφ, and the drainage equipment provided with this mass main body 2 is particularly convenient for cold climates. In the upper opening of the mass body 2,
A step portion 3a provided on the lower portion of the outer periphery of the ring-shaped outer frame 3 is fitted inside and adhesively joined. The inner side surface of the outer frame 3 is formed in an upwardly widened shape with a slight taper, and a coin-shaped lid 4 adaptable to this taper is fitted in the drop-down manner to form the outer frame 3
The inner side surface of the lid 4 and the outer side surface of the lid 4 are in close contact with each other. A plurality of driver-insertion notches 5 are provided on the upper edge of the inner surface of the outer frame 3. Further, a non-slip concave-convex pattern is formed on the upper surface of the lid 4, but this is not shown. Here, a strip 6 made of rubber or foam such as polyvinyl chloride, urethane, polystyrene, and polyethylene is wound around the outer peripheral upper portion 3b of the outer frame 3 and fixed by an adhesive. Of course, an elastic ring material may be fitted. Then, it is solidified with mortar 7 through this strip 6.

Next, the operation of this embodiment will be described. As shown in FIG. 2, the invert 1 is installed in the excavated groove, and each of the receiving ports 1a, 1b, 1c of the invert 1 is installed. After the PVC pipes for drainage pipes 8, 8 ...
If a level (not shown) is applied to the opening of the receptacle 1d for the mass main body of the invert 1 so that the invert 1 is leveled out, a predetermined slope is formed in the invert 1, so that a predetermined pipe slope is formed. can get. Then, the mass main body 2 is fitted into the receiving opening 1d, the height of the mass main body 2 is adjusted to the height of the ground, the mass is cut, and then the mass main body 2 is adhesively bonded. Then, a vinyl-covered lid 4 (not shown) is fitted in the upper opening of the mass main body 2, and the outer frame 3 having the strip 6 fixed to the outer peripheral upper portion 3b is adhesively joined. Then, after backfilling the invert 1 etc., the strip 6 of the outer frame 3
Harden the area around with mortar 7. After these operations, the vinyl cover is removed and all the operations are completed. When the drainage work is performed as described above, even if thermal stress is applied to the outer frame 3 and the lid 4, or the mortar 7 contracts, the strain is absorbed by the strip 6, so the outer frame 3 The creep phenomenon does not occur, and the outer frame 3 is not cracked even if the driver is inserted into the driver insertion notch 5 and pry open when cleaning the drainage facility.

[0006]

EFFECT OF THE INVENTION According to the present invention, the coin-shaped lid is dropped onto the ring-shaped outer frame so that it can be completely sealed, preventing rainwater from entering and leaking odors.
The driver can be inserted into the insertion notch for prying open, and the one-touch opening / closing operation can be performed. At the same time, since the elastic strip is wound around the outer surface of the outer frame 3, thermal stress is generated in the lid. Also, even if the mortar contracts, its strain is not absorbed and the outer frame is not creped, and therefore is not damaged. Moreover, it can be applied without changing to a small-diameter mass in stock.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a conventional example.

[Explanation of symbols]

 1 Invert 2 Mass body 3 Outer frame 4 Lid 5 Driver-insertion notch 6 Band 7 Mortar

Claims (1)

[Scope of utility model registration request] 1. A mass main body made of a vinyl chloride pipe is erected and adhesively bonded to a PVC invert buried in the ground, and a ring-shaped outer frame is adhesively bonded to an upper opening of the mass main body. The outer surface of the coin-shaped lid is closely attached to the inner surface of the outer frame to be removably fitted therein, and a driver-insertion notch is provided on the upper edge of the inner surface of the outer frame, and the periphery of the outer frame is fixed with mortar. In a drainage facility to be buried, a strip made of an elastic material is integrally provided on the outer surface of the outer frame, and the outer periphery of the strip is solidified with the mortar.