JP2593841Y2 - Inspection tube inner lid - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner lid of a check tube of a drainage basin.

[0002]

2. Description of the Related Art As shown in FIG. 5, in a drainage basin (1) buried underground, pipe connections (3, 4) are provided on the side of the main body (2), and a check pipe connection is provided above. The upstream pipe (6) and the downstream pipe (7) are connected to the pipe connection (3, 4), and the check pipe (8) is connected to the check pipe connection (5). Connected.
The inspection tube (8) has an upper end opening to the ground surface GL, and an inner lid (9) is attached to the opening, and an outer lid (10) is further attached. Is composed of a lid (9A) and a handle (9B) made of synthetic resin such as polyvinyl chloride, and the outer lid (10) is made of a steel body or the like as a cylinder (10A) and a cylinder (10A). And a lid (10B) to be attached.

[0003]

[Problem to be Solved by the Invention] In the above conventional construction, when the drainage basin (1) is to be inspected and cleaned from the ground, the outer lid (1) is required.
The cover (10B) of (0) is removed, and the inner cover (9) is removed via the handle (9B). Inner lid as shown (9)
In addition, the peripheral wall of the cylindrical body (10A) of the outer lid (10) interferes, and it becomes difficult to remove the inner lid (9).

[0004]

According to the present invention, as a means for solving the above-mentioned conventional problems, a check tube (8) in which a soft outer cover plate (19B) is extended from the periphery of a hard inner cover plate (19A). ) Is provided.

[0005]

[Function] When the inner cover (19) is removed from the inspection tube (8), even if the surface GL is inclined due to crustal deformation, the inner cover (19) is removed.
When the soft outer lid plate (19B) comes into contact with the peripheral wall of the cylindrical body (10A) of the outer lid (10), the inner lid (19) can be easily removed from the inspection tube (8).

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to an embodiment shown in FIGS. 1 to 4. The inner lid (1) of an inspection tube (8) shown in FIGS.
9) is an inner lid plate (19A) made of a hard synthetic resin such as polyvinyl chloride or rubber, and an outer lid plate made of a soft synthetic resin or rubber or the like protruded from the periphery of the inner lid plate (19A). (19B) and a handle (19C) extended upward from the inner lid plate (19A).

The inner lid plate (19A) of the inner lid (19) is manufactured by injection molding or the like. At this time, the outer lid plate (19B)
Is inserted into an injection molding die, or after molding, the outer lid plate (19B) is bonded to the inner lid plate (19A) with an adhesive or fusion. Also, the handle (19C) may be separate,
It may be one. Further, the tip of the outer lid plate (19B) may be thinned. The inner lid (19) is a drainage basin as shown in FIG.
(1) is attached to the upper end of the check tube (8), and an outer lid (10) is further attached thereon. When inspecting the drainage basin (1) from the ground, the lid (10B) of the outer lid (10) is removed, and the inner lid (19) is further removed via the handle (19C).

As shown in FIG. 4, when the ground surface GL is inclined due to crustal deformation or the like, the outer lid (10) is also inclined. However, when the inner lid (19) is removed from the inspection tube (8), the inner lid (19) is removed. ) Soft outer lid plate (19
The inner cover (19) can be easily removed from the inspection tube (8) because the inner cover (19) is deformed when B) hits the peripheral wall of the cylindrical body (10A) of the outer cover (10).

[0009]

[Effect of the Invention] Therefore, in the present invention, the inner lid can always be easily removed from the inspection tube, and the inspection work becomes easy.

[Brief description of the drawings]

 1 to 4 show an embodiment of the present invention.

FIG. 1 is a perspective view

FIG. 2 is a side sectional view

FIG. 3 is an explanatory view of a drainage basin buried state.

FIG. 4 is an explanatory view of removing the inner lid.

FIG. 5 is an explanatory view of a conventional drainage basin buried state.

[Explanation of symbols]

 1 Drainage basin 8 Check tube 19 Inner lid 19A Inner lid 19B Outer lid 10 Outer lid

Claims (1)

(57) [Scope of request for utility model registration] 1. An inner lid of an inspection tube, wherein a soft outer lid plate is extended from a peripheral edge of a hard inner lid plate.