JPH0714436Y2 - Filter for drain hole - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a filter for a drain hole used in a drain hole provided in a retaining wall.

(Prior Art) This type of conventional filter for drainage holes is a filter box made of iron with numerous pores covered by a mesh plate, and the mesh plate is opened to open the filter box from the opening. After storing the filter material such as gravel in the inside, close this opening with a mesh plate, and add the opening of the filter box that is closed with this mesh plate to the edge of the drain hole provided in the retaining wall. It is common to nail the rim of the opening to fix it to the retaining wall.

(Problems to be solved by the invention) However, in the above-mentioned conventional type, since the filter material is housed and the weight thereof is considerable, it is troublesome to fix it at the mounting position. There was a problem that required.

(Means for Solving the Problems) The present invention relates to a filter for a water drain hole, which is made to solve the above-mentioned problems, and a connection hole portion for connecting to the water drain hole is provided in the central portion of one surface. A plurality of protrusions for locking the filter material are arranged on the other surface of the rectangular substrate made of synthetic resin material, and a binding wire insertion hole is provided at the base of each protrusion. It is what

(Example) Next, this invention is demonstrated in detail about the Example shown in figure.

(1) is a rectangular substrate made of a hard synthetic resin material such as hard polyethylene resin, and a cylindrical connection which can be inserted into a drainage hole of a retaining wall and connected at the center of one surface of the substrate (1). The hole (2) is provided so as to project. Further, a plurality of protrusions (3) for locking the filter member are arranged on the other surface of the substrate (1) opposite to the connection hole portion (2).
The protrusion (3) for locking the filter member is formed in a dagger shape or one shape so as to easily pierce the filter material (4) in which fibers or synthetic resin wires are entangled, and each of the protrusions (3) The base has an insertion hole (5) for the binding wire.

As shown in FIG. 2, the thus constructed structure has a connection hole portion (in a central portion of one side of a rectangular substrate (1) made of a synthetic resin material in a drainage hole of a retaining wall (11) ( 2) is inserted to temporarily hold the substrate (1) in contact with the outer surface of the retaining wall (11), and then it can be easily attached by burying with earth and sand. Before being attached to the retaining wall (11), the filter material (4) in which fibers or synthetic resin materials are entangled with each other is provided on the other surface of the substrate (1), and each of the plurality of filter material locking projections is arranged. (3)
The long wire rod that has been inserted into the insertion hole (5) of the binding wire rod provided at the base of each of the protrusions (3) in advance is locked in the state of being pierced by the filter member (4). )
If the filter material (4) is tied up by being hung on the outer surface of the same, the filter material (4) comes out of the protrusions (3) or is partially biased in combination with the locking effect of the protrusions (3). Instead, it is always stably and surely held in a square shape on the other surface of the substrate (1), and as a result, the filter material (4) properly prevents the outflow of sediments and the drainage is always smooth. It is a thing. Further, since the prismatic substrate (1) made of a synthetic resin material and the filter material (4) which is stably and securely held by the prismatic substrate are lightweight and easy to handle, it is troublesome as a work involved in the construction of the retaining wall (11). Can be greatly reduced.

(Effect of the Invention) As will be apparent from the description of the above embodiment, the present invention connects the rectangular substrate (1) to the outer surface of the retaining wall by connecting the drainage hole of the retaining wall with the connection hole portion (2). Accurate drainage can be done easily just by attaching them in contact with each other, and together with the advantages that the structure is simple and lightweight and it can be provided at low cost, the problem of this conventional filter for drainage holes is solved. The practical value is extremely large.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention, and FIG. 2 is a partially cutaway side view showing a state of use. (1): Rectangular substrate, (2): Connection hole, (3): Protrusion for retaining filter material, (4): Filter material,
(5): An insertion hole for the binding wire.

Claims (1)

[Scope of utility model registration request] 1. A plurality of projections for locking a filter material on the other surface of a rectangular substrate (1) made of a synthetic resin material, the connection hole portion (2) for connection with a drainage hole being provided at the center of one surface. (3) is provided, and an insertion hole (5) for a binding wire is provided on the base of each protrusion (3).