JPH0810420Y2 - Connection structure of tanks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a tank body connection structure for connecting a plurality of divided tank bodies to each other to form a tank body.

[Prior Art] Conventionally, in constructing a tank body such as a septic tank, a plurality of divided tank bodies may be formed by connecting connecting flanges provided at opposite ends of each divided tank body. Has been done. That is, as shown in FIG. 4, connecting flanges 1a and 2a are provided at opposite ends of the divided tank bodies 1 and 2, respectively.
By connecting 2a to each other with a fastener,
Are connected. And each divided tank body 1,
A tank body formed by connecting two members may be installed directly, for example. Where the connecting flange
If 1a, 2a protrudes from the outer surface of the tank body, the total load of the tank body may be applied to the connecting flanges 1a, 2a when the tank body is installed, and the connecting flanges 1a, 2a may be damaged.
A recessed portion 3 is provided at the base of a, 2a, and the connection flanges 1a, 2a are located inside the outer surface of the tank body so as to be arranged in the recessed portion 3 and the connection flange 1a It is designed so that the full load of the tank is not applied to the 2a.

[Problems to be Solved by the Invention] However, in the conventional example as described above, the recessed portion 3 is formed in the end tank body 2 installed at the end of the vertically divided central tank body 1. Then, the shape of the end tank body 2 is as shown in FIG. 5, and when the recessed portion 3 is formed in this way, the end tank body 2 formed by integral molding is The undercut portion 3'by the recess portion 3
Therefore, it could not be taken out from the mold and could not be molded by integral molding. Therefore, as shown in FIG. 4, the end tank body 2 is further divided into upper and lower parts for molding. However, if the end tank body 2 is divided into a plurality of pieces as described above, the number of molding dies for molding the end tank body 2 increases and the molding cost increases, and the number of connecting points increases. There has been a problem that the number of assembling steps increases and the portion where water leakage occurs increases.

The present invention is intended to solve the above problems,
The purpose is to reduce the number of connecting points and reduce the number of assembly steps when connecting the divided tank bodies that are divided into a plurality of parts. It is an object of the present invention to provide a tank connecting structure capable of protecting a connecting portion.

[Means for Solving the Problems] In order to achieve the above object, the tank body connection structure according to the present invention is such that the end tank body 2 is disposed on the side of the vertically divided central tank body 1, Connecting flanges 1a, 2 provided at opposite ends
In a tank body connecting structure in which a is connected to each other to connect the central tank body 1 and the end tank body 2, a recessed portion that is recessed inward from an outer surface of the central tank body 1 on a side portion of the central tank body 1 3 is provided, and a projecting piece 4 is provided so as to project outward from the recess portion 3 so as not to project from the outer surface of the central tank body 1 to form a connecting flange 1a,
A projecting piece 5 is projected outward from the outer surface of the end tank body 2 to form a connecting flange 2a, and the connecting flanges 1a and 2a are connected to each other.

[Operation] Central tank body 1 to which the connecting flange 2a of the end tank body 2 is connected
The connecting flanges 1a of the central tank body 1 are located inward from the outer surface of the central tank body 1 because the connecting flanges 1a and 2a of the central tank body 1 are located inside the outer surface of the central tank body 1 by the recessed portion 3. In this case, the total load of the tank body is not applied to the connecting flanges 1a and 2a when placed directly. Also, a connecting flange 2a provided on the end tank body 2
Is formed by projecting the projecting piece 5 outward from the outer surface of the end tank body 2.
Can be molded by integral molding while providing the connecting flange 2a without being divided.

Hereinafter, the present invention will be described in detail based on illustrated embodiments.

Each of the divided tank bodies divided into a plurality of parts is assembled by connecting them, and is used as a septic tank, for example. This tank body is composed of a vertically divided central tank body 1 and an end tank body 2 connected to a side portion of the central tank body 1. Connection flanges 1a and 2a for connection are provided at opposite ends of the tank bodies 1 and 2, respectively. The central tank body 1 is provided with a recessed portion 3 which is recessed inward from the outer surface of the central tank body 1, and does not project outward from the recessed portion 3 from the outer surface of the central tank body 1. Thus, the projecting piece 4 is projected to form the connecting flange 1a. As shown in FIG. 3, the connecting flange 2a provided on the end tank body 2 has a projecting piece 5 projecting outward from the outer surface of the end tank body 2, and the connecting flange 2a is formed by this projecting piece 5. Has been formed. In this way, the connecting flange 2a is formed by projecting the projecting piece 5 outward from the outer surface of the end tank body 2, so that the end tank body is integrally molded while the connecting flange 2a is provided. Two
Even in the case of forming, the end tank body 2 can be molded by integral molding without generating an undercut portion. And the central tank body 1 and the end tank body 2
Means that the connection flanges 1a, 2a are connected and integrated by connecting the fasteners 7 such as bolts and nuts, and the end tank bodies 2 integrally formed as described above are connected. By doing so, it is possible to reduce the number of connecting points as much as possible, and it is possible to reduce the number of assembling steps. Also, by reducing the connecting points, it is possible to reduce the number of water leak points. is there. Here, the connecting flange 1a provided in the central tank body 1 is provided in the recess portion 3 so as not to project from the outer surface of the central tank body 1, and the connecting flanges 1a and 2a to be connected are concave. It is designed to be connected in the local portion 3. Since the connecting flanges 1a and 2a are connected in the recessed portion 3, they do not protrude from the outer surface of the tank body as shown in FIG. When installing directly on the installation surface 6, the connection flanges 1a, 2a are designed so that the installation surface 6 does not receive the full load of the tank body.
It is designed to protect 1a and 2a.

Then, when connecting the tank bodies 1 and 2,
As shown in the figure, the tank bodies 1 and 2 are arranged so as to face each other, and the connecting flanges 1a and 2a provided at the ends are connected by a fastener 7 to connect the tank bodies 1 and 2 to each other. It is a thing. At this time, a waterproof material such as a waterproof sealing material or an adhesive is interposed between the connecting flanges 1a and 2a to be connected, so that the waterproofness of the connecting portion is ensured.

In the above-mentioned embodiment, the case of the septic tank is shown.
The present invention is not limited to this and may be a bathtub or the like.

[Advantage of the Invention] As described above, the connecting structure of the tank body of the present invention is provided with a recessed portion which is recessed inward from the outer surface of the central tank body on the side portion of the central tank body, and which is located outside the recessed portion. To form a connecting flange by projecting a projecting piece so as not to project from the outer surface of the central tank body, and forming a connecting flange by projecting a projecting piece outward from the outer surface of the end tank body, Since both connecting flanges are connected together, each connecting flange in the connected state is located inward of the outer surface of the central tank body, and when placed directly, the total load of the tank body is placed on the connecting flange. The end tank body can be molded by integral molding without splitting while providing the connecting flange, and the number of connecting points with the central tank body can be reduced. This is to reduce the number of connecting points By doing so, it is possible to reduce the number of assembling steps and the number of places where water leaks.

[Brief description of drawings]

1 is a front view of an embodiment of the present invention, FIG. 2 is a partial cross-sectional view showing the same connection state, and FIG. 3 is a front view of an end tank body,
FIG. 4 is a front view of a conventional example, and FIG. 5 is a front view of the above-mentioned end tank body, where 1 is a central tank body, 1a is a connecting flange, 2 is an end tank body, 2a is a connecting flange, 3 is a recessed portion, 4 is a protruding piece, and 5 is a protruding piece.

Claims (1)

[Scope of utility model registration request] 1. A central tank body and an end tank body are formed by arranging end tank bodies on the sides of a vertically divided central tank body and connecting connecting flanges provided at opposite ends to each other. In the connecting structure of the tank bodies to be connected, a recessed portion that is recessed inward from the outer surface of the central tank body is provided on the side portion of the central tank body, and projects outward from the recessed portion from the outer surface of the central tank body. Do not project the projecting piece to form a connecting flange, and project the projecting piece outward from the outer surface of the end tank body to form the connecting flange, and connect both connecting flanges together. Connection structure of tanks.