JPS629418Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is installed in gutter lines installed at the boundary between a road and a sidewalk, or the boundary between a road without a sidewalk and a residential area, etc., to prevent rainwater flowing through the gutter from flowing in. Regarding improvement of sewage basins.

Drainage channels generally have two routes: sewage and rainwater.
There are two types of wastewater treatment methods: a combined sulfur system in which both wastewaters are treated in the same system, and a separate system in which each wastewater is treated separately.

By the way, if the sewage main line and the terminal wastewater treatment equipment have sufficient capacity, no problem will occur whether the above-mentioned combined or separate system is used, but if the above-mentioned capacity is not sufficient, problems will occur. arise.

The capacity of the above-mentioned sewage trunk line is related to the population density, and will be increased in accordance with the gradual increase in population density, and in the process of expansion, a diversion system will be adopted. As mentioned above, this split system is a method in which rainwater and sewage flow into separate systems and are then drained to the main line. However, when constructing a new sewage system while leaving the rainwater system as it is, it is necessary to It will intersect with the side ditch. As a result, rainwater flowing through the gutters ends up flowing into the cesspit.
Therefore, in order to prevent rainwater from flowing into the sewage basin, an inner lid is installed in the middle of the sewage basin, and the area above the inner lid of the sewage basin is used to cover the road surface where the side gutter and the sewage basin intersect. It allowed rainwater to pass through.

However, with this method, rainwater may leak through the gap in the inner lid installed in the middle, or the U-shaped gutter may overflow during the necessary drainage during heavy rains, causing the inner lid to float and end up in the home. A problem arose in that the water flowed into the sewage waterway from other sources and overflowed the main line. Furthermore, since the above-mentioned inner lid can be removed more easily than the sewage basin, there have been cases where the inner lid has been taken away.

The present invention was developed in view of the above points, and its purpose is to fix the inner cover provided at the part of the sewage basin where it intersects with the gutter by notching it into the receiving frame. Rainwater from the side gutter does not flow into the sewage basin, and even when the U-shaped gutter overflows, the inner lid does not float up, making rainwater and sewage drainage completely independent. To provide an inner lid for a sewage basin which can be easily removed and is not susceptible to theft since the inner lid cannot be easily removed.

An embodiment of the present invention will be described below with reference to the drawings.

A is a sewage basin made of concrete, which is buried at the boundary between a road and a sidewalk, or between a road without a sidewalk and a residential area. And this sewage basin body A
is composed of a rectangular side block 1 in which a hole 11 is formed to which a U-shaped gutter B is connected, and a circular side block 2 to which a sewage pipe C from the home is connected. Further, the bottom plate of the side gutter 1 also serves as the upper surface 21 of the sewage basin 2, and the inner cover plate 3 is fitted onto the upper surface 21.

By the way, regarding this structure, U
The U-shaped gutter B is connected to the gutter 1 to which the gutter 2 is connected.
Since rainwater and the like flow from one side to the other, rainwater may leak from the fitting part of the inner cover plate 3 and the inside of the sewage basin 2 may become full of water.

Therefore, in the present invention, the inner cover plate 3 and the circular side block 2 are tightly fitted, and the inner cover plate 3 is prevented from being accidentally opened. The structure will be explained below based on FIGS. 2 to 5.

Reference numeral 4 denotes a metal receiving frame embedded flush with the upper surface 21 of the circular side block 2, and is composed of a flange 41, an outer ring 42, and an inner ring 43. The flange 41 and the outer ring 42 The outer periphery of is buried in the upper surface 21 of the sewage basin 2. Also, the outer ring 42
A protrusion 42a is formed on opposing surfaces of the protrusion 42a, and a pin 5 is embedded therein with its tip protruding.
This pin 5 protrudes to approximately the midpoint between the inner ring 43 and the outer ring 42. Further, the outer peripheral surface of the inner ring 43 is coated with rubber 6. The interval between the outer ring 42 and the inner ring 43 is set to a width that allows the engagement portion 3 of the inner lid 3, which will be described later, to be inserted.

The inner lid 3 is formed of metal, and the top plate part 3
1 and a collar portion 32. Engagement portions 33 are formed at two opposing locations on the collar portion 32 . This engaging portion 33 is formed by a guide groove 33a formed in the collar portion 32 and an engaging plate 33b integrally formed on the back surface of the guide groove 33a.
The back surface of b is in contact with the inner ring 43 via the rubber 6 to prevent the inner lid 3 from rattling in the horizontal direction with respect to the receiving frame 4. Further, the guide groove 33a includes a vertical longitudinal groove 33a1 and a horizontal groove 33 that slopes upward in sequence.
a2. Furthermore, a groove 31a for a hand key is formed in the top plate 31.

Then, insert the inner lid 3 into the hand key groove 31a of the top plate 31.
Use the flange 3 to hang it from the upper opening of the gutter 1.
The pin 5 is inserted into the outer ring 42 and the inner ring 43 of the second receiving frame 4, and the pin 5 is fitted into the vertical groove 33a1 of the guide groove 33a. As a result, the collar 32 of the inner lid 3 is inserted between the outer ring 42 and the inner ring 43, and the back surface of the top plate 31 of the inner lid 3 comes into contact with the upper edge of the inner ring 43 via the rubber 6.

When the inner lid 3 is rotated counterclockwise in the figure, the pin 5 is positioned from the vertical groove 33a1 to the horizontal groove 33a2 of the guide groove 33a. Here, since the lateral grooves 33a2 are sequentially inclined upward, the inner lid 3 is
As the top plate 31 rotates, it is forcibly pushed downward, so that the back surface of the top plate 31 is pressed against the rubber 6. As a result, the inside and outside of the inner ring 43 of the receiving frame 4 are completely sealed, completely preventing water from entering the inside, and also preventing the inner lid from floating up.

In addition, the entire inner peripheral surface of the flange 32 of the inner lid 3 is covered with rubber 6.
The reason why only the engagement plate 33b was brought into contact without making contact with the rubber 6 is because if the entire engagement plate 33b is brought into contact, the rotation of the inner lid 3 will be
This is because it becomes difficult to fit the inner lid 3 into the receiving frame 4 due to friction between the inner lid 3 and the receiving frame 4 due to dimensional errors.

As described above, the present invention comprises a pin and a groove between the receiving frame attached to the upper surface of the circular side block and the inner cover fitted into the receiving frame, and the inner cover is fitted and rotated. The groove is fixed by notching into the pin, and the space between the two is maintained watertight, preventing rainwater from flowing into the sewage basin from the side gutter, preventing the inner cover from floating up when water overflows, and preventing the inner cover from accidentally opening. This has the effect that it cannot be stolen because it is not stolen.

[Brief explanation of the drawing]

Figure 1 is an overall perspective view, Figure 2 is an exploded perspective view of essential parts, Figure 3 is a partially enlarged sectional view of the same as above, Figure 4 is a plan view of the assembled state of Figure 3, and Figure 5A. , B are cross-sectional views taken along lines A-A and B-B of the same. 1...Gutter, 2...Sewage basin, 3...Inner lid, 4...
... Receiving frame, 33a... Guide groove, 5... Pin.

Claims (1)

[Scope of utility model registration request] It has a U-shaped gutter at the top, a sewage basin to which a sewage pipe is connected at the bottom, and an inner lid provided at the boundary between the side gutter and the sewage basin, and the inner lid is located in the middle of the sewage basin. Attach a receiving frame into which the receiving frame is fitted, form a pin and a guide groove between the receiving frame and the inner cover, and by rotating the inner cover, the guide groove is clicked by the pin and the space between the two is maintained in a watertight state. The structure of the inner lid of the sewage basin is characterized by that