JPS6032238Y2 - Grout hole sealed structure - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a sealed structure for a grout hole provided in, for example, a concrete segment.

Conventionally, the commonly used grout hole sealing structure is
A water-stop sealing material having approximately the same width as the edge of the socket is attached to one end of a socket for gas pipe applications, which is attached to the inner wall of the grout hole, and the sealing material is pressed with the seat surface of the plug that is screwed onto the socket to create a pressure seal. That's what I was going to do.

Therefore, the state in which the water-stopping sealing material is attached to the edge of the socket is very unstable, and there is a risk that the plug may be misaligned when screwed on, and the plug may not be accurately pressed against the plug seating surface.

Furthermore, even if pressure welding is performed correctly, as mentioned above, there is a limit to the width (thickness) of the socket edge, so there are disadvantages such as the pressure contact area of the water-stop sealing material being small and not being able to provide sufficient sealing effect or withstand high pressure sealing. Ta.

This idea was devised in view of the above circumstances, and its purpose is to fit a cap made of, for example, synthetic resin to the outer periphery of the edge of the socket, and to attach the end surface of this cap to the edge of the grout hole. The present invention aims to improve the sealing effect by forming an exposed wide seating surface and pressing the seal onto this seating surface with a plug seating surface that is screwed into a socket.

An embodiment of this invention will be described in detail below based on the drawings.

The figure shows the structure of the main part of this invention. The symbol 1 in the figure is a segment, and a socket 3 made of, for example, a gas pipe is fitted into the inner wall of a grout hole 2 provided in this segment 1. Buried.

During embedding, an annular cap 4 made of, for example, synthetic resin is fitted to the outer periphery of one end of the socket 3.
One end surface of the cap 4 is exposed at the opening of the grout hole 2 to form a wall surface 5.

On the other hand, a recess 6 is provided in the part where the cap 4 is buried, so that the bark does not easily fall off after being buried.

Further, a sealing groove 7 for water stopping (one groove is provided in this embodiment) is provided on the seat surface 5 of the cap 4, and a sealing material 8 made of, for example, an elastic material is attached to this sealing groove 7.

A plug 9 (sealing lid) is screwed into the socket 3, and the sealing material 8 is held by the seat surface 10 of the plug 9.
The opening of the grout hole 2 is sealed by pressing the grout hole.

Next, the operation of this invention based on the above configuration will be explained in detail.

An annular cap 4 is fitted to the outer periphery of the end edge of the socket 3, and one end surface of the cap 4 is exposed to widen the seating surface 5, so that a water-stop sealing groove 7 can be formed and the sealing material 8 can be stabilized. Can be attached.

Further, the sealing material 8 does not slip when the plug 9 is screwed in, resulting in an incomplete seal, and the contact area of the sealing material 8 with the seating surfaces 5, 10 is adjusted, so that the sealing effect can be improved.

Furthermore, the end edge of the socket 3 has a cap 4 provided with a recess 6.
Since it is held down (locked), it will not fall off easily.

In the above embodiment, the recess 6 was provided on the buried surface of the cap 4 to prevent it from falling off, but other shapes may be used and the shape is not limited to the above shape.

Furthermore, although an example has been given in which the water-stopping seal groove 7 is provided on the seat surface 5 of the cap 4, a sufficient sealing effect can be obtained even if the water-stopping seal groove 7 is not provided.

Since this invention has the above-mentioned structure and function, it is possible to widen the bearing surface width of the socket edge,
The water-stop seal groove is designed to widen the contact area of the sealant to the seating surface, allowing for stable adhesion of the sealant and high-tight sealing.Moreover, the simple configuration makes it easy to implement, and the number of parts is small, making it extremely inexpensive. It has various excellent effects such as

[Brief explanation of drawings]

The drawing is a partial vertical sectional view of a main part showing an embodiment of this invention. 2... Grout hole, 3... Socket, 4... Cap, 5... Seat surface, 7
... Seal groove, tail ... Seal material, 9...
····plug.

Claims (1)

[Scope of utility model registration request] A cap is fitted to the outer periphery of one end of the socket attached to the inner wall of the grout hole, a water-stop sealing material is attached to the exposed seating surface of the cap, and the sealing material is pressed by the seating surface of the plug screwed onto the socket. A grout hole sealed structure characterized by: