JPS644945Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a fixing structure for a lid of a drainage basin provided in the middle of a drainage pipe.

(Prior art) As is well known, several drainage basins are installed in the middle of a drainage pipe that leads sewage from a kitchen or bathroom to a sewer pipe. The installation is carried out at the upper opening edge 10 of the drainage basin as shown in Figure 7.
An upper end opening 102 is formed in the annular groove 101 formed in the
The annular periphery 104 of the lid 103 covering the lid 103 is only fitted and placed, but not fixed in any way, resulting in the following problems.

(Problems to be Solved by the Invention) That is, if the lid 103 is not fixed as described above, the lid 103 may float due to the water pressure when sewage flows back from the sewer pipe, and the impact caused by passing vehicles may occur. There are problems such as the lid 103 coming off due to a child's mischief, or the lid 103 being intentionally removed due to a child's play. Such a problem cannot be ignored because it can directly lead to a pedestrian falling accident, and especially if the lid 103 is made of lightweight material such as resin concrete, as is the case with recent residential drainage basins, it is difficult to ignore the problem. This is important because it is much easier to remove than a cast iron lid.

Another problem is that if the lid 103 is not fixed as described above, dirt will enter between the annular groove 101 on the upper opening edge and the annular periphery 104 of the lid 103, causing the lid 103 to partially lift up. This causes a large amount of rainwater to flow into the drainage basin during rainfall, significantly reducing the drainage function.

The present invention attempts to solve these problems.

(Means for solving the problem) That is, the fixing structure of the catch basin lid according to the present invention is as follows:
In order to solve the above problem, an elastic member having a plurality of leg pieces disposed on the underside of the lid covering the upper end opening of the drainage basin, and an elastic member sandwiched between the leg pieces on the underside of the elastic member. A leg opening member that pushes the leg pieces outward as it rises, and a bolt that passes through the lid and the elastic member and is screwed into the leg member, The tip of the leg piece pushed outward by the leg member is in elastic contact with the inner surface of the peripheral wall of the drainage basin.

(Function) With this configuration, simply by placing a lid on the upper end opening of the drainage basin and then tightening the bolt, the plurality of leg pieces of the elastic member are pushed open outward as the leg spread member rises. The tip of the elastic member comes into elastic contact with the inner surface of the peripheral wall of the drainage basin, making it difficult for the elastic member to come out upwards. Therefore, the lid, which is inseparably connected to the elastic member via the bolt and the leg member, easily lifts up. It is fixed without any problem. Therefore, even if an upward force is applied to the lid due to sewage flowing back from the sewer pipe, a vehicle passing by, or a child trying to open the lid, the lid will not easily come off. If the lid is fixed without being easily lifted up in this way, there will be no gap caused by dirt getting caught between the annular groove at the upper opening edge of the catch basin and the annular periphery of the lid. It is also possible to satisfactorily prevent the deterioration of the drainage function due to the inflow of rainwater.

Hereinafter, the fixing structure of the catch basin lid of the present invention will be described in detail by way of examples.

(Example) Fig. 1 is a sectional view of an embodiment of the present invention, and Fig. 2 is an exploded perspective view of essential parts of the same embodiment, where 1 is a synthetic resin drainage basin buried in the soil. , 2 indicates a lid made of resin concrete that covers the upper end opening 3 of the drainage basin. This drainage basin 1 consists of a basin body 4 and a cylindrical adjuster star 5. The lower end of the adjuster star 5 is fitted into an annular groove 7 formed in the upper opening edge 6 of the basin body 4. Drain pipes 9, 9 are inserted and connected to the connection ports 8, 8 of the main body 4, respectively. The annular groove 11 formed in the upper opening edge 10 of this drainage basin 1 (in this embodiment, the upper opening edge of the adjuster star 5) is provided with the lid 2.
The annular peripheral edge 12 of is fitted.

An elastic member 13 is disposed below the lid 2. The elastic member 13 is made by bending a metal spring plate or the like into a substantially mountain shape, and has a pair of leg pieces 16 extending diagonally downward on both sides of a central top plate 15 having bolt insertion holes 14. , 16 are formed symmetrically. A concave rib 17 for preventing deflection is formed on each leg piece 16, and several bending claws 18 are formed at the tip.

Further, on the lower side of this elastic member 13, a leg opening member 19 is provided which pushes open the leg pieces 16, 16 outwardly as it rises.
is sandwiched between the leg pieces 16, 16. This spread member 19 is a rectangular parallelepiped member having a screw hole 20 in the center, and has rib receiving portions 21 and 21 at both ends.
are recessed, and the recessed ribs 17, 17 of the leg pieces 16, 16
are fitted into the rib receivers 21, 21. Therefore, this spread member 19 is in a relationship that cannot be rotated freely with respect to the elastic member 13, and therefore, as will be described later, when a bolt 23 that can be screwed into a screw hole 20 of this spread member 19 is tightened, the spread legs are fixed. The member 19 is adapted to rise.

A bolt 23 that passes through the bolt insertion hole 22 at the center of the lid 2 and the bolt insertion hole 14 of the elastic member 13 is screwed into the screw hole 20 of the leg opening member 19, and when this bolt 23 is tightened, the legs can be opened. The member 19 is raised and lowered when loosened.

By tightening this bolt 23, the spread member 19 is raised, and the leg piece 1 of the elastic member 13 is raised.
6, 16 outward from the state shown by the dashed line to the state shown by the solid line in FIG. It is brought into elastic contact with the inner surface of the peripheral wall of the adjuster star 5). When brought into elastic contact in this manner, the elastic member 13 becomes difficult to escape upward due to friction with the inner surface of the peripheral wall of the drainage basin, and is therefore inseparably connected to the elastic member 13 via the bolt 23 and the split member 19. The related lid 2 is fixed without being easily lifted up.

In this case, as shown in FIG. 6, a recess 24 is provided at the elastic contact site on the inner surface of the peripheral wall of the drainage basin (adjust star 5), and the bent claw 18 at the tip of the leg piece 16 of the elastic member is engaged with the recess 24. Alternatively, on the contrary, it is preferable to provide a convex portion at the elastic contact portion and engage the bending claw with the convex portion, since this will ensure the fixation of the lid 2.
Further, in some cases, the bending claw 18 may be engaged with the stepped portion 25 at the lower end of the upper opening edge 10, as shown by the dashed line in FIG.

In the embodiments described above, concave ribs 17 are provided on the leg pieces 16 of the elastic member 13 in order to prevent the leg pieces 16 from bending.
However, as shown in FIG. 3, convex ribs 26, 26 are formed on both leg pieces 16, 16 of the elastic member 13, and protrusions 27, 27 at both ends of the spread leg member 19 are fitted. As shown in FIG.
It may be configured to fit into the

Further, in the above embodiment, the elastic member 13 is formed into a substantially mountain shape having two leg pieces 16, 16, but the number of leg pieces may be three or more, for example, as shown in FIG. 4 on all sides of the central top plate 15 as shown in
A book leg piece 16 is provided, and a disc-shaped spread leg member 19 is sandwiched between these leg pieces 16.
The protrusion 27 may be non-rotatably engaged with any of the four leg pieces 16. Furthermore, this fifth
Since the illustrated elastic member 13 is made of a thick spring plate that is difficult to bend, each leg piece 16 does not have ribs or the like for preventing bending. In addition, if there is a concern that both the spread member 19 and the elastic member 13 may idle around the drainage basin (adjuster star 5), a vertical rib 30 may be provided inside the drainage basin 1 as shown in FIGS. 1 and 2. Just leave it there.

(Effects) As described above, the present invention includes an elastic member having a plurality of leg pieces disposed on the underside of the lid covering the upper end opening of the drainage basin, and a gap between the leg pieces on the underside of the elastic member. a leg opening member which is sandwiched between the legs and which pushes the leg pieces outwardly as it rises; and a bolt which is screwed into the opening leg member through the lid and the elastic member, and the bolt is tightened. Since the tips of the leg pieces pushed outward by the leg spreader members raised at 2 are in elastic contact with the inner surface of the peripheral wall of the drainage basin, the leg pieces of the elastic member and the peripheral wall of the drainage basin are Due to the elastic friction with the inner surface, it becomes difficult for the elastic member to come out upward, and therefore, the lid, which is inseparably connected to the elastic member through the bolt and the leg member, is fixed without being easily lifted up. be done. Therefore, even if upward force is applied to the lid due to sewage flowing backwards from the sewer pipe, a vehicle passing by, or a child trying to open the lid, the lid will not come off easily, causing pedestrians to fall. Accidents can be prevented. If the lid is fixed without being easily lifted up in this way, there will be no gap between the annular groove at the upper opening edge of the catch basin and the annular periphery of the lid due to dirt getting caught in it. It is also possible to satisfactorily prevent the deterioration of the drainage function due to the inflow of rainwater.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of one embodiment of the present invention, Fig. 2 is an exploded perspective view of essential parts of the same embodiment, and Figs. 3, 4, and 5 are parts of other embodiments of the present invention. FIG. 6 is a perspective view, FIG. 6 is a partial sectional view of still another embodiment of the present invention, and FIG. 7 is a partial sectional view of a conventional example. 1...Drainage basin, 2...Lid, 3...Top opening, 4
...Main body, 5...Adjust star, 13...Elastic member, 16...Leg piece, 19...Legs member, 23...
…bolt.

Claims (1)

[Scope of utility model registration request] an elastic member having a plurality of leg pieces disposed on the underside of the lid covering the upper end opening of the drainage basin; comprises a leg member that pushes outward and opens the lid, and a bolt that passes through the lid and the elastic member and is screwed into the leg member. A fixing structure for a lid of a drainage basin, in which the tips of the leg pieces pushed open are brought into elastic contact with the inner surface of the peripheral wall of the drainage basin.