JPH0573091U - Drainage - Google Patents

Abstract

(57) [Summary] [Structure] A projection 51 having a semicircular cross section is formed on the lower surface of the peripheral portion of the lid 5.
And a groove 3 having a semicircular cross section into which the projection 51 of the lid 5 is inserted on the upper end surface of the edge wall of the receiving frame 21. [Effect] The projection 51 of the lid 5 is inserted into the groove 3 of the receiving frame 21, and the lid 5 is attached to the receiving frame 21. When the lid 5 is removed, when the lid 5 is moved, the protrusion 51 of the lid 5 easily moves along the semicircular surface of the groove 3 and a gap is formed between the lid 5 and the receiving frame 21. By putting a finger in this gap, the lid 5 can be easily opened. Also, when closing the lid 5,
Simply by placing the protrusion 51 in the vicinity of the groove 3, the protrusion 51 moves along the semicircular surface of the groove 3 and the lid 5 is set in a predetermined position. Thus, the lid 5 can be opened and closed easily, which is convenient.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drainage basin such as a rainwater basin and a wastewater basin.

[0002]

[Prior Art]

 Although various structures are known as conventional drainage basins, a typical sewage basin using a three-way joint will be described. As described in Japanese Unexamined Patent Publication No. 63-122836, a sewage basin using this three-way joint has an upstream-side receiving port and a downstream-side receiving port of a three-way joint including an upstream-side receiving port, a downstream-side receiving port, and an upper-side receiving port. An upstream pipe and a downstream pipe are attached to the side receiving ports, an inspection tube is attached to the upper receiving port, and a lid is attached to the inspection port at the upper end of the inspection tube. There is also a drainage basin in which the inspection tube and the three-way joint are integrated.

These are manufactured from synthetic resins such as vinyl chloride resin or concrete. After these drainage basins have been constructed, dust and dirt may adhere to the upstream inlet and downstream outlet and become clogged, so sometimes the lid is removed and the inside is inspected and blocked. If so, a cleaning tool should be inserted through this inspection port for cleaning. In this way, the drainage basin often opens and closes the lid.

[0004]

[Problems to be solved by the device]

 However, in this way, the lid is opened and closed every time the inside of the drainage basin is inspected or cleaned.However, a projection with a square cross section is provided on the lower surface of the peripheral edge of the conventional lid, and the upper end surface of the edge wall of the inspection port is There is a groove with a square cross section on the check box, and the projection with a square cross section of the lid is inserted in the groove with a square cross section of this inspection port. It was necessary to pull up the lid almost straight up to get it out of the groove with a square cross section, but this lid was heavy, so I had a hard time pulling it up from the inspection port and removing it.

If the lid cannot be lifted right above, the protrusion having a square cross section may collide with the side wall of the groove having a square cross section, and the protrusion may be damaged. Also, when closing the lid, it was inconvenient because the protrusion of the lid had to fit into the groove provided at the inspection port. Therefore, an object of the present invention is to provide a drainage basin whose lid can be easily opened and closed.

[0006]

[Means for Solving the Problems]

 The present invention has been made in order to solve the above problems and achieve the above object, and is a box main body provided with an upstream receiving port, a downstream receiving port (or an insertion port), and an upper receiving port, In a drainage basin consisting of a lid attached via a receiving frame to the upper end of an inspection tube connected to the upper receiving opening, a projection having a semicircular cross section is provided on the lower surface of the peripheral edge of the lid. A groove with a semicircular cross section is provided on the upper end surface of the edge wall of the receiving frame, into which the protrusion of the lid is inserted.

The box body and lid of the present invention may be made of any material. For example, it may be made of a synthetic resin such as a vinyl chloride resin or a thermosetting resin reinforced with glass fiber, a metal such as iron, or an inorganic material such as concrete. May be.

[0008]

[Action]

 In the present invention, is a projection having a semicircular cross section provided on the lower surface of the peripheral portion of the lid, and a groove having a semicircular cross section into which the projection of the lid is inserted is provided on the upper end surface of the edge wall of the receiving frame. Then, the protrusion of this lid is inserted into the groove of the receiving frame, and the lid is attached to the inspection port. Then, when opening the lid, the lid may be pulled up just like the conventional one, but in the drainage basin of the present invention, the lid can be opened by moving the lid horizontally or diagonally upward. ..

That is, when the lid is moved horizontally or obliquely upward, the protrusion of the lid moves along the surface of the semicircular groove. When the protrusion of the lid moves along the surface of the semicircular groove in this manner, a gap is created between the lid and the receiving frame. Therefore, the lid can be easily opened by lifting this gap.

Further, when closing the lid, the projection of the lid may be just inserted into the groove of the receiving frame as in the conventional case, but in the drainage basin of the present invention, even if the projection of the lid is slightly displaced from the groove of the receiving frame. The lid can be attached without hindrance. That is, when the protrusion of the lid is slightly displaced from the groove of the receiving frame and the lid is placed, the protrusion of the lid moves along the semicircular surface of the groove of the receiving frame, and the lid is naturally inserted into the predetermined position. Thus, the lid of the present invention can be opened and closed very easily.

[0011]

【Example】

 Next, an embodiment of the present invention will be described. 1 to 4 show an embodiment in which the drainage basin of the present invention is applied to a sewage basin comprising a three-way joint. FIG. 1 is a partially cutaway side view of the completed sewage basin, and FIG. 2 is the sewage basin shown in FIG. 3 is a top view of the lid portion of FIG. 3, FIG. 3 is a sectional view taken along line XX of FIG. 2, and FIG. 4 is a sectional view taken along line YY of FIG.

1 to 4, A is a sewage basin body made of vinyl chloride resin, and the sewage basin body A is composed of a three-way joint 1 and an inspection tube 2. The three-way joint 1 is provided with an upstream receiving port 11, a downstream receiving port 12, and an upper receiving port 13. The downstream side receiving port 12 may be an insertion port. The inspection tube 2 is connected to the upper receptacle 13 of the three-way joint 1. The lower end of the receiving frame 21 having the inspection port 22 is connected to the upper end of the inspection tube 2. A groove 3 having a semicircular cross section is provided on the upper end surface of the edge wall of the receiving frame 21, and annular grooves 40, 41 are provided on the inner peripheral surface. The groove 40 has a semicircular cross section, and is for locking a projection provided on the outer peripheral surface of the insertion tube 52 of the lid 5 described later. An O-ring for a seal is attached to the groove 41.

Reference numeral 5 denotes a lid made of vinyl chloride resin, and a projection 51 having a semicircular cross section is provided on the lower surface of the peripheral portion of the lid 5, and the projection 51 has a shape that can be inserted into the groove 3 of the receiving frame 21. Is becoming Further, three recesses 55 are provided on the periphery of the lid 5, and a rod-shaped body such as a screwdriver or a cauldron is put into the recess 55, and as shown in FIG. 4, the upper edge of the receiving frame 21 is used as a fulcrum. The rod 5 can be rotated to push the lid 5 obliquely upward.

An insertion cylinder 52 is provided on the lower surface of the lid 5. A plurality of (for example, three) projections 53 are provided at predetermined positions of the insertion tube 52, and the insertion tube 52 is inserted into the inspection port 22 of the receiving frame 21 to engage the plurality of projections 53 with the groove 40 of the receiving frame 21. By stopping it, the lid 5 can be attached so as not to move. Reference numeral 7 is an upstream pipe made of vinyl chloride resin, and the upstream pipe 7 is connected to an upstream receiving port 11 of the three-way joint 1.

Reference numeral 8 denotes a vinyl chloride resin downstream pipe body, and the downstream pipe body 8 is connected to a downstream side receiving port 12 of the three-way joint 1. Next, the construction method and usage method of this sewage basin will be described. The road is dug, the three-way joint 1 is installed, and the upstream pipe body 7 and the downstream pipe body 8 are attached to the upstream-side receiving port 11 and the downstream-side receiving port 12 of the three-way coupling 1 with an adhesive, respectively. Attach

Next, the lower end of the inspection tube 2 is attached to the upper receptacle 13 of the three-way joint 1 with an adhesive. Then, the lower end of the receiving frame 21 is attached to the upper end of the inspection tube 2 with an adhesive. The insertion tube 52 of the lid 5 is put into the inspection port 22 of the receiving frame 21, and the lid 5 is attached to the receiving frame 21. Then, the insertion cylinder 52 is inserted into the inspection cylinder 2, and the protrusion 51 having a semicircular cross section provided on the lower surface of the peripheral portion of the lid 5 is inserted into the groove 3 having a semicircular cross section. When the lid is attached, the protrusion 51 having the semicircular cross section is not in the position where it is just fitted into the groove 3 having the semicircular cross section, and the protrusion 51 and the groove 3 are inserted even if the lid 5 is inserted slightly into the inspection port 22 of the receiving frame 21. Since the surface of is a semicircular curved surface, the protrusion 51 slides down along the curved surface of the groove 3 and the protrusion 51 naturally fits in the groove 3.

As described above, in this embodiment, the lid 5 can be attached without any trouble even if the position of the lid 5 is slightly displaced, so that the lid 5 can be easily attached. Then, backfill the road or site. In order to inspect the sewer pipe constructed in this way, open the lid 5, look into the three-way joint 1, and check that the upstream side inlet 11 and the downstream side outlet 12 of the three-way joint 1 are free from dust and dirt. Inspect for jams. Then, if dust or dirt is clogged in the upstream receiving port 11 or the downstream receiving port 12 of the sewage basin, a cleaning tool is inserted from the inspection tube 2 for cleaning.

The lid 5 is opened for inspecting and cleaning the sewage basin A. The state at this time will be described in more detail. As shown in FIG. 4, the tip of the screwdriver is inserted into the recess 55. With the edge wall of the receiving frame 21 as a fulcrum, the base of the screwdriver is lowered and rotated, and the lid 5 is pushed up. Then, the lid 5 moves horizontally or obliquely upward, and the protrusion 51 having a semicircular cross section provided on the lower surface of the peripheral edge of the lid 5 moves along the groove 3 having a semicircular cross section provided on the end face of the inspection tube 2 to There is a gap between the inspection tube 5 and the inspection tube 2. The lid 5 can be opened by inserting a finger of the hand into this gap.

As described above, in the present embodiment, the lid 5 does not need to be pulled right above as in the conventional case, and therefore the lid 5 can be easily removed, which is convenient.

[0020]

[Effect of the device]

 In the drainage basin of the present invention, when the lid is opened, the lid may be pulled up just like the conventional one, but it is convenient because the lid can be opened horizontally or diagonally upward. Further, when closing the lid, the projection of the lid may be inserted into the groove of the receiving frame as in the conventional case, but it is convenient because the lid can be closed without any trouble even if the position of the lid is slightly displaced.

[Brief description of drawings]

FIG. 1 shows an embodiment in which the drainage basin of the present invention is applied to a sewage basin comprising a three-way joint, and is a partially cutaway side view of the completed sewage basin.

FIG. 2 is a top view of a portion of the lid of the sewage drain shown in FIG.

3 is a cross-sectional view taken along line XX of FIG.

4 is a cross-sectional view taken along line YY of FIG.

[Explanation of symbols]

 A Sewage basin body 1 Three-way joint 11 Upstream side inlet 12 Downstream side inlet 13 Upper side inlet 2 Inspection tube 21 Receiving frame 22 Inspection port 3 Groove 4 O-ring 5 Lid 51 Protrusion 7 Upstream tube 8 Downstream tube

Claims (1)

[Scope of utility model registration request] 1. An upstream receiving port and a downstream receiving port (or insertion port)
In a drainage basin including a box main body provided with an upper receiving opening and a lid attached to the upper end of an inspection tube connected to the upper receiving opening via a receiving frame, the lower surface of the peripheral edge of the lid is A drainage basin, wherein a projection having a semicircular cross section is provided, and a groove having a semicircular cross section into which the projection of the lid is inserted is provided on the upper end surface of the edge wall of the receiving frame.