JPH0223757B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a Titon-type temporary stopper used for temporarily closing a socket of a pipe (including a pipe joint).

(Prior art) Conventionally, as this type of temporary stopper, for example,
The one described in No. 51-23717 is known.

Basically, this consists of a stopper body, a collar formed on the outer end of the stopper body, a protrusion extending from the outer periphery of the collar toward the inner end of the stopper body, and a bolt formed on the protrusion. It consists of a screw hole and a screw hole.

When inserting such a product into a pipe socket, a lubricant is applied to the inner periphery of the rubber ring built into the pipe socket and the outer periphery of the stopper body to facilitate insertion. Ru.

However, lubricants solidify over time, so
When removing the tube from the socket, it was not easy to do so, and if an attempt was made to remove it forcibly, there was a risk of damage to the tube socket or the rubber ring.

For this reason, the subsequent joint pipe construction could not be carried out promptly.

(Problems to be Solved by the Invention) The present invention was devised in view of the above-mentioned problems and to solve them, and its purpose is to:
To provide a temporary stopper that can be easily removed without damaging a pipe socket or a rubber ring even if a lubricant applied to facilitate insertion hardens over time.

(Means for Solving the Problems) The temporary stopper of the present invention includes a stopper main body, a flange formed on the outer end of the stopper main body, and a thin cup-shaped stopper cover removably fitted onto the stopper main body. , and a through hole bored from the inner end to the outer end of the plug body.

(effect) The plug body is fitted onto the plug body to combine the two.

At this time, the air between the stopper body and the stopper cover body is discharged to the outside through the through hole, so that the two can be easily combined.

Lubricant is applied to the inner periphery of the rubber ring installed in the tube socket and the outer periphery of the plug cover to facilitate insertion.

Once the lubricant has been applied, grasp the collar and insert the combined piece into the tube socket.

This will bring the rubber ring into close contact with the stopper body.
The port of the tube is temporarily closed.

When detaching for pipe joint construction, grasp the collar and pull in the direction of detachment.

At this time, if the lubricant has not solidified, the plug body and the plug cover are removed from the pipe socket while remaining combined.

If the lubricant has solidified, only the plug body is removed while the plug cover remains in the pipe socket.

At this time, since external air flows between the stopper body and the stopper cover through the through hole, separation between the stopper body and the stopper cover is easily performed.

Once the plug body is removed, the plug cover remaining at the pipe socket is split and deformed to reduce its diameter to release the close contact with the rubber ring, and then removed from the pipe socket.

At this time, since the plug body is thin-walled and cup-shaped,
Splitting and diameter reduction deformation can be easily performed. In particular, this can be done even more easily if a predetermined groove is formed inside the plug cover.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 is a longitudinal sectional front view showing a state in which a temporary stopper according to an embodiment of the present invention is inserted into a pipe socket. FIG. 2 is a partially cutaway front view of the stopper body. FIG. 3 is a side view of FIG. 2. FIG. 4 is a longitudinal sectional view showing the plug body. FIG. 5 is a longitudinal cross-sectional side view taken along the line A--I of FIG. 4.
Figure 6 is an enlarged view of the main part of Figure 5. FIG. 7 is a longitudinal sectional front view showing the detached state of the stopper body. FIG. 8 is a perspective view showing the state in which the plug cover is removed.

Reference numeral 1 denotes a pipe, which has a large-diameter swollen socket 1a at the end of the pipe, and an annular groove 1b formed in the middle of the socket 1a.
A rubber ring 2 for sealing is installed inside the inner surface.

3 is a stopper main body of the temporary stopper, and 4 is a stopper cover.

As shown in FIGS. 2 and 3, the plug body 3 has a flange 3b protruding from the outer end of a cylindrical wall 3a, and an inclined wall 3c at the inner end to facilitate insertion into the socket 1a. An inner end wall 3d is provided, and a through hole 3e for air venting is bored in the center of the inner end wall 3d.

As shown in FIGS. 4 and 5, the plug body 4 is a thin cup-shaped cylinder made of polyethylene or the like and has a cylinder wall 4a and an inner end wall 4b, and has a plug body 3 at the inner end. It is provided with an inclined wall 4c joined to the inclined wall 3c of the stopper body 3, and is removably fitted to the outer surface of the stopper main body 3.

The plug body 4 has two parallel axial grooves 4d and 4 extending from the outer end to the inner end on the upper inner surface of the cylinder wall 4a.
d and continuously, a cylindrical wall 4a and an inclined wall 4c
Circumferential grooves 4d are carved on the inner surface except for the area between the parallel grooves 4d and 4d at the boundary between the two. Each groove 4d
As shown in FIGS. 6 and 8, part of the cylindrical wall 4a is left to facilitate division by tearing.

Next, the operation will be explained based on such a configuration.

In use, as shown in FIG. 1, with the stopper cover 4 fitted onto the outer surface of the stopper main body 3, a rubber ring 2 is placed inside the socket 1a of the pipe 1 that requires a temporary stopper.
A lubricant 5 is applied to the inner periphery of the plug body 4 and the outer periphery of the plug body 4 to facilitate insertion, and the inner end of the plug body 3 with the plug cover 4 fitted on the outside is gently inserted into the socket 1a of the pipe 1. In this way, the inclined wall 4c of the plug body 4 is aligned with the inclined wall 1c of the pipe 1.
In this way, the socket 1a of the tube 1 is temporarily closed. At this time, the sealing effect is excellent because the sealing rubber ring 2 can be used as is and the fitting distance between the temporary stopper and the pipe 1 is long, resulting in good watertight performance.

Next, the process of removing the temporary stopper will be described.

Since the lubricant 5 is still soft until a short period of time has passed after temporary stopper construction, by grasping the collar 3b and pulling it toward you, the stopper main body 3 can be easily removed with the stopper cover 4 still attached. In addition, it can be taken out from the socket 1a of the tube 1.

If the lubricant 5 solidifies after a long period of time,
When the collar 3b is grasped and pulled gently, external air flows in through the through hole 3e and the plug cover body 4 is pulled as shown in FIG.
The stopper main body 3 alone can be separated and easily pulled out by leaving it in the socket 1a of the tube 1.

After that, if the plug cover body 4 is pulled out forcibly, the rubber ring 2
Since there is a risk of damage to the watertightness after pipe joint construction, a thin flat plate is installed in the gap between the socket 1a of the pipe 1 and the part of the cylinder wall 4a between the grooves 4d and 4d of the plug cover 4. Gently insert a shaped spatula or the like (not shown), split it along the groove 4d, and pull out the peeled part 4a', as shown in Fig. 8, since the plug cover 4 is made of a flexible thin material. As shown, the peeled portion 4a', the inclined wall 4c, and the inner end wall 4b can be continuously removed to the outside.

Thereafter, the remaining cylindrical wall 4a can also be removed without difficulty, since the outer diameter can be reduced without damaging the rubber ring 2.

Therefore, subsequent joint pipe construction can be carried out immediately without any problems.

(Effects of the Invention) As described above, according to the present invention, the following excellent effects can be achieved.

(1) Consisting of a stopper body, a flange, a stopper cover, and a through hole, in particular, since the stopper body is removably fitted with a thin cup-shaped stopper cover, a lubricant is applied to facilitate insertion. Even if it hardens over time, it can be easily removed without damaging the tube socket or rubber ring.

Therefore, the subsequent joint pipe construction can be done quickly.

(2) Since the thin cup-shaped plug cover is removably fitted onto the plug body, if the lubricant has not solidified, the plug body and the plug cover can be removed together, and the lubricant can also solidify. If it is, you can remove only the stopper itself.

Therefore, the operator can easily perform the detachment work without grasping the solidified lubricant completely.

(3) Since the plug body is provided with a through hole, the plug body and the plug cover can be smoothly combined and separated.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view showing a state in which a temporary stopper according to an embodiment of the present invention is inserted into a pipe socket. FIG. 2 is a partially cutaway front view of the stopper body. FIG. 3 is a side view of FIG. 2. FIG. 4 is a longitudinal sectional front view showing the plug body. FIG. 5 is a longitudinal cross-sectional side view taken along the line A--I of FIG. 4. Figure 6 is an enlarged view of the main part of Figure 5. Figure 7 shows
FIG. 7 is a longitudinal sectional front view showing a detached state of the stopper body. Figure 8 shows
FIG. 3 is a perspective view showing a state in which the plug cover is taken out. 1 is a pipe, 1a is a socket, 1b is an annular groove, 1c is an inclined wall, 2 is a rubber ring, 3 is a stopper body, 3a is a cylindrical wall, 3
b is the collar, 3c is the inclined wall, 3d is the inner end wall, 3e is the through hole, 4 is the plug cover, 4a is the cylinder wall, 4a' is the peeled part,
4b is an inner end wall, 4c is an inclined wall, 4d is a groove, and 5 is a lubricant.

Claims (1)

[Claims] 1. A stopper body, a flange formed on the outer end of the stopper body, a thin cup-shaped stopper cover removably fitted onto the stopper body, and a through hole bored from the inner end to the outer end of the stopper body. A temporary stopper characterized by being composed of.