JPS629404Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a lid for cleaning an opening of a drain pipe, and for example, relates to the structure of the operating part of the lid body for opening and closing the cleaning opening of a drainage pipe for household gray water. .

[Technical background of the invention]

As shown in FIG. 1, the conventional drain pipe cleaning port cover has a cylindrical cleaning port body 2 fitted and fixed to the upper end opening of a cylindrical cleaning port pipe 1 connected to the drain pipe. A structure is adopted in which a cleaning mouth cover body 4 is screwed into a thread groove 3 formed on the inner periphery of this cleaning mouth body 2. Two opening/closing protrusions 5, 5 are protruded from the top surface of the lid 4. This conventional lid 4 can be rotated by inserting a rod between the opening/closing protrusions 5 and 5 to open the cleaning opening 2, so it can be rotated without a special jig. However, if the cleaning port pipe 1 is installed upright from a drain pipe buried underground, the protrusions 5, 5 will protrude above the ground, and there is a risk of tripping over the protrusions 5, 5. In addition, when forming a cleaning opening at a place where concrete is poured, concrete is placed around the periphery of the lid 4, making it impossible to open and close the lid 4, which has the drawback that it cannot be installed at a place where concrete is poured.

Furthermore, as shown in FIG. 2, a structure is known in which a threaded groove 7 is formed on the outer periphery of a cleaning port body 6 that is fitted and fixed to the upper end of a cleaning port tube, and a lid body 8 is screwed into this threaded groove 7. However, even this structure has a drawback that it cannot be used in places where concrete is poured.

Furthermore, in the conventional structure shown in Figures 1 and 2, if the lid is loosely screwed, children may open the lid and throw stones or other objects, which could clog the drain pipe. ing.

[Purpose of invention]

The present invention was developed in view of the above-mentioned drawbacks, and there are no protrusions on the top surface of the lid, so there is no risk of tripping even when installed on the ground, and it is safe. It can also be installed in
The present invention also provides a drain pipe cleaning opening cover that can be easily opened and closed using a tool such as a screwdriver.

[Summary of the idea]

In this invention, finger hooks are recessed in the upper surface of the lid body at symmetrical positions with the center between them, and a groove is formed to communicate the finger hooks with each other. By inserting a tool in an inclined manner and rotating it, the lid body can be easily rotated to open and close the cleaning opening.

[Example of idea]

The configuration of an embodiment of the present invention will be explained with reference to FIGS. 3 and 4.

Reference numeral 10 denotes a cleaning port body, which is formed into a cylindrical shape from synthetic resin such as vinyl chloride resin, and this cleaning port body 10 is, for example, the upper end of a cleaning port tube raised from a drainage pipe buried underground. It is adapted to be fitted and fixed into the opening. The upper end of this cleaning mouth body 10 has a diameter expanded outward, and a locking step 11 is provided on the inner periphery of the upper end.
An inclined packing receiving part 12 whose diameter is reduced downward is formed through the packing receiving part 1.
A thread groove 13 is formed on the inner periphery of the lower part of the thread 2.

Next, reference numeral 14 denotes a lid body made of synthetic resin such as vinyl chloride resin, and has a threaded cylindrical portion 15 that is screwed into the threaded groove 13 of the cleaning port body 10 and protrudes inward from the periphery. There is. And this lid body 14
By screwing the threaded cylindrical portion 15 to the packing receiving portion 12 of the cleaning port body 10 via the packing 16, the inner peripheral edge of the lid body 14 is brought into contact with the locking stepped portion 11, and the upper surface 17 is attached to the cleaning port body. The lid body 14 is threaded onto the upper end of the cleaning mouth body 10 so as to be substantially flush with the upper end of the cleaning mouth body 10 , and closes the cleaning opening 18 opened on the upper surface of the cleaning mouth body 10 . Finger hooks 19, 19 are recessed in the upper surface 17 of this lid body 14 at symmetrical positions with the center portion in between. The finger hooks 19, 19 are formed in a substantially U-shape when viewed from above, and a linear groove 20 is formed on the top surface of the lid 14 to communicate the finger hooks 19, 19 with each other.

Next, the operation of this embodiment will be explained.

To close the cleaning port 18, the threaded cylinder portion 15 of the lid body 14 is fitted into the cleaning port 18 of the cleaning port body 10 and screwed into the thread groove 13. To screw the lid 14 together, first put your fingers on the finger hooks 19, 19 and rotate them, then insert a rod-shaped jig such as a screwdriver into the groove 20 that connects the finger hooks 19, 19 in an inclined manner. By engaging and rotating the lid 14, the lid 14 is strongly tightened and screwed together, and cannot be opened by the operation force of turning the finger hooks 19 with fingers.

Next, when opening the lid 14, insert a rod-shaped jig such as a screwdriver into the groove 20 and rotate it in the opposite direction to unscrew the lid 14, opening the cleaning opening. It can be removed from the body 10 and the cleaning port 18 can be opened.

Note that the finger hooks 19, 19 of the lid body 14 are not limited to the structure of the above embodiment, and as shown in FIG.
It is also possible to form a pair of finger grips 21, 21, 22, and 22 at symmetrical positions sandwiching the center portion, and to form an X-shaped groove 23 that allows the finger hooks 21, 21, 22, 22 to communicate with each other.

[Effect of idea]

According to the present invention, grooves are formed on the upper surface of the lid body that sandwich the center part and communicate with each other, so that the lid can be opened and closed by placing one's fingers on the finger hook, and when tightening or loosening the lid, the grooves can be opened and closed. This can be easily done by simply inserting and engaging a rod-shaped jig such as a screwdriver into the groove, and the lid can be easily tightened and installed. It is safe to use because it cannot be opened in vain, and there are no protrusions on the top surface of the lid when the cleaning opening for drain pipes buried underground is installed above ground. It can also be applied to places where concrete is poured.

[Brief explanation of the drawing]

Figures 1 and 2 are sectional views of conventional drainage pipe cleaning opening devices, Figure 3 is a plan view of a cleaning opening cover showing an embodiment of the present invention, and Figure 4 is the same cleaning opening cover. A partially cutaway front view of the cleaning port device equipped with the
FIG. 5 is a plan view of a cleaning port cover showing another embodiment. 14...Lid body, 17...Top surface of lid body, 19,2
1, 22...finger rest, 20, 23...concave groove.

Claims (1)

[Scope of utility model registration request] A lid for cleaning an opening of a drain pipe, characterized in that finger hooks are recessed in the upper surface of the lid body at symmetrical positions with the center between them, and a groove is formed in which the finger hooks communicate with each other.