JPH0960772A - Duct port water stop device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a duct port water stop device capable of surely stopping water without fouling hands, capable of being easily removed at the time of removal, capable of exerting a water stopping property without being affected by temperature changes, and having high reliability. SOLUTION: This duct port water stop device is provided with a plug body 1 formed with a frictional elastic member such as rubber into a nearly disk shape to be fitted to a duct port 5A and having a notch section reaching a through hole passing a cable 6 at the center section, a sealing member 2 formed with a frictional elastic member such as rubber and inserted and coupled into the notch section of the plug body 1 to seal the notch section, and a spring body 3 integrally fixing the sealing member 2 and the plug body 1 in the tight state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct water stop device for preventing water leakage / runoff from a duct port installed in a manhole, a handhole, etc. The present invention relates to a duct mouth water stoppage device suitable for use in.

[0002]

2. Description of the Related Art As a method of stopping water at this type of duct,
For example, one utilizing a chemical reaction is known. That is,
As shown in FIG. 9, the water stop member 1 made of, for example, soft urethane foam is provided on the outer peripheral surface of the cable 101 arranged in the duct conduit 100 (for example, at the inner side of a certain depth from the duct port).
02 is wound and temporarily fixed.

Next, as shown in FIG. 10, the water-foaming water blocking member 103 is wound around the outer peripheral surface of the cable 101 so as to be adjacent to the front (exit) side of the water blocking member 102. Further, again, as shown in FIG. 11, the water blocking member (for example, made of soft urethane foam) 102 is attached to the water foaming water blocking member 1.
It will be wound adjacent to the front side of 03.

In this manner, the water bubbling and water blocking member 103 is wound so as to be sandwiched between the water blocking members 102 in a sandwich shape, so that the water flows before and after the water bubbling and water blocking member 103. It prevents and enhances the foaming water-stopping effect.

[0005]

However, such a duct mouth stop structure has the following disadvantages. Both the water blocking member and the water blocking member are difficult to wind around the cable, and it is difficult to wind them, so the water blocking effect tends to be incomplete, and the adhesion between the duct and the water blocking member The water-repellent effect is likely to be incomplete due to peeling, etc., and when actually carrying out such a construction method, many special kids such as rubber gloves and pushing rods are required. It is difficult to remove if it gets wet and it is difficult to remove it. The reaction of the water-foam water-stopping member is bad at low temperature, and it cannot be used unless it is warmed up. There is a possibility that it may solidify.

In view of the above-mentioned circumstances, therefore, the present invention can reliably stop water without soiling the hands, can be easily removed at the time of removal, and can be stopped without being affected by temperature changes. It is an object of the present invention to provide a highly reliable duct mouth water stoppage device capable of exhibiting the above.

[0007]

[Means for Solving the Problems] That is, the invention of claim 1 is a duct mouth water stop apparatus for preventing water leakage and running water from a duct mouth, which is a friction elastic member such as rubber attached to the duct mouth. A plug body that is formed in a substantially disc shape and has a notch that reaches the through hole through which a through body such as a cable penetrates in the center part, and insert and fit into the notch of this plug body, and the notch It is provided with a sealing member formed of a friction elastic member such as rubber for sealing, and a spring body for integrally fixing the sealing member and the plug body in a tight state.

According to the second aspect of the present invention, the spring member is inserted into the stop hole formed in the sealing member or the plug body so that the sealing member and the plug body are integrally fixed in a tight state. It is configured in. According to the invention of claim 3, an oil-resistant packing is interposed between the duct opening and the plug body.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 and 2 are a schematic cross-sectional view and a front view showing a duct water stoppage device according to the present invention. The duct water stop apparatus of this embodiment is composed of a plug body 1, a sealing member 2, a spring body 3, and a packing 4. In the figure, reference numeral 5 indicates a jacket tube which is a duct, and 6 indicates a cable for a telephone or the like.

The plug 1 has a specific outer diameter dimension that allows it to be inserted (in a loosely inserted state) into the outer tube 5, and FIG.
Is formed in a substantially U-shape with a collar 1A as shown in Fig. 1 and a notch 1B is formed, a part of which reaches the central portion (through hole). The collar 1A is provided to prevent the inside of the outer tube 5 from being incapable of being removed and to facilitate the extraction. It should be noted that the plug body 1 of this embodiment uses a CR-based rubber that is oil resistant and has a low creep property, but in particular, rubber elasticity that can suppress the strain generated by the weight of the cable 6 within 3 mm. It is preferable that the hardness is provided with.

The sealing member 2 constitutes a water stop plug together with the plug 1, and is inserted into and fitted into the notch 1B of the plug 1 to seal the notch 1B. The friction elastic member is formed in a shape as shown in FIGS. 4 and 5, and bottomed stop holes 21 into which the spring bodies 3 are symmetrically inserted are formed at two positions on the front side. In addition, the sealing member 2 includes an outer peripheral surface side in contact with the jacket tube 5 and a cable 6
A protrusion 22 as shown in FIG. 5 is formed on the inner peripheral surface side through which the holes pass. The sealing member 2 of this embodiment is also made of the same material as that of the plug body 1 and the one having the same elastic characteristic.

The spring body 3 has a stop hole 2 formed in the sealing member 2.
1 (this stop hole may be formed in the plug body) to integrally fix the sealing member 2 and the plug body 1 in a tight state. In this embodiment, FIG. As shown in FIG. 7, it is formed by a wide (W) leaf spring material and has a spring force.
It acts almost uniformly over B as a whole.

In the spring body 3 of this embodiment, the central portion is partially bulged laterally (forming the insertion / removal portion 31) so that the spring body 3 can be easily inserted / removed by a hand or the like, and in a substantially perpendicular direction. When the both ends of the spring body 3 are inserted into the stop holes 21, the sealing member 2 is pressed against the plug body 1 by the spring force of the spring body 3 and is firmly fixed. Has become. The spring body of this embodiment has a spring force of 2 kgf / cm 2, and is inserted into the sealing member 2 at the time of the final setting to complete the assembly.

The packing 4 is intended to improve the sealing property of the stopper 1 with respect to the outer tube 5. In this embodiment, the packing 4 is formed in a shape as shown in FIG. It is designed to be worn over. The packing 4 of this embodiment has excellent oil resistance and is 0.5 kgf / c.
Those having an elastic force capable of withstanding a surface load of m are used.

Therefore, according to this embodiment, the mantle tube opening 5
Since the packing 4 attached to the plug 1 seals between A and the plug 1, and the protrusion 22 of the sealing member 2 seals between the outer tube opening 5A and the sealing member 2,
It is possible to provide a water shutoff device with high sealing performance without requiring extra work.

Further, the collars 1A, 2A of the plug 1 and the sealing member 2
This makes it possible to easily perform the mounting work and the withdrawal work, and the flanges 1A and 2A make the plug body 1 and the sealing member 2 deeply penetrate into the inner part of the outer tube 5 and the removal work becomes difficult. Such troubles can be prevented.

[0017]

As described above, according to the present invention, it is possible to simply seal the plug body with the sealing member and to fix the plug body and the sealing member integrally by the spring body. It can be done manually, etc., so you can set the water stopcock in the duct opening surely to stop water without soiling your hands with adhesive etc., and further remove the water stoppage from the duct opening Even at times, it is possible to provide an epoch-making water stop device that can be easily detached and attached and that can be easily attached and detached.

Further, according to the present invention, the notch of the stopper formed of a friction elastic member such as rubber in a substantially disk shape is sealed with the sealing member formed of the friction elastic member such as rubber. The spring member is inserted into a stop hole formed in the sealing member or the plug body to integrally fix the sealing member and the plug body in a tight state. Since it is a structure that seals with, unlike the conventional one using a chemical reaction, even if the temperature change such as low temperature or high temperature is not affected by the water stopping power at all, it is possible to surely stop the water, It is possible to provide a highly reliable duct mouth water stoppage device.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a duct water stoppage device according to the present invention.

FIG. 2 is a schematic plan view of the duct water shutoff device.

FIG. 3 is a schematic plan view showing a plug body of the duct water shutoff device.

FIG. 4 is a schematic plan view showing a sealing member of the duct mouth water stoppage device.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a plan view showing a spring body of the duct water shutoff device.

FIG. 7 is a sectional view taken along line BB of FIG. 6;

FIG. 8 is a schematic plan view showing a packing of the duct water stop device.

FIG. 9 is an explanatory view showing a procedure of a conventional method for stopping water at a duct opening.

FIG. 10 is an explanatory diagram showing a procedure of a conventional method for stopping water at a duct opening.

FIG. 11 is an explanatory view showing a procedure of a conventional method of stopping water at a duct opening.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plug 1B Notch 2 Sealing member 21 Stop hole 3 Spring body 4 Packing 5 Outer mantle (duct opening) 6 Cable

Claims (3)

[Claims] 1. A duct mouth water stop device for preventing water leakage / runoff from a duct mouth, which is formed into a substantially disc shape by a friction elastic member such as rubber attached to the duct mouth and has a center portion formed by a cable. A plug body provided with a notch that reaches a through hole through which the penetrator penetrates, and a seal formed of a friction elastic member such as rubber that is inserted into and fitted into the notch of the plug body to seal the notch. A duct water shutoff device comprising: a stop member; and a spring body that integrally fixes the sealing member and the plug body in a tight state. 2. The sealing member and the plug body are integrally fixed in a tight state by inserting a spring body into a stop hole formed in the sealing member or the plug body. The duct water stop apparatus according to claim 1. 3. The duct water stop apparatus according to claim 1, wherein an oil resistant packing is interposed between the duct opening and the plug body.