JP3579777B2 - Water stop device for cable pipe entry hole in building wall - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water stop device for a cable pipe entry hole in a building wall.
[0002]
[Problems to be solved by the invention]
At the point where the cable is drawn through the concrete wall of the building, the cable inlet pipe is inserted into the hole provided in the concrete wall, so that rainwater etc. does not enter from the gap between the wall hole and the cable inlet pipe. It is necessary to stop water. Conventionally, various types of water stopcocks have been used as water stoppage devices in cable conduits.However, in order to stop water in a gap between a cable entrance pipe penetrating a concrete wall of a building and a wall hole, concrete stoppage is required. With a conventional water stopcock, it is not easy to install it in the wall hole with sufficient contact with the concrete rough surface on the inner peripheral surface of the through hole provided in the wall, and it is difficult to completely stop water. However, the size of the apparatus was large, the weight was large, and handling was inconvenient.
[0003]
There is also known a water stopcock in which a water swelling material is used as a packing material for the water stopcock and is swelled by intruding water to close the hole and stop water. As a result, the contact with the inner surface of the hole is lost, and the fixing of the water stopcock is loosened.
[0004]
INDUSTRIAL APPLICABILITY The present invention can be easily installed in a gap between a cable entrance pipe penetrating a concrete wall of a building and a wall hole, can completely stop water, and can be loosened or dislodged even when water runs out. It is an object of the present invention to provide a water stop device that does not cause water leakage.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the waterproofing device for a cable pipe lead-in hole of a building wall according to the present invention has inner rubber discs 5 and 6 arranged on both sides of a center water swelling disc 7, On both sides of the rubber discs 5 and 6, on the inner side surface of the rubber disc 20, edge protruding pieces 25 continuous from the outer peripheral edge 27 of the disc to the edges 29 of the cable inlet pipe insertion holes 21, 22 and 23 project. Rubber disk packings 3 and 4 with protruding pieces are arranged, and outer peripheral edges 35 of the inner interposed rubber discs 5 and 6 are brought into contact with the inside of the edge protruding pieces 25. The fan-shaped clamping press plates 1 and 2 made of glass fiber reinforced plastic are arranged on both sides of the rubber plate, and the sector-shaped clamping press plates 1 and 2, the rubber disc packings 3 and 4 with edge protruding pieces, and the inner interposed rubber discs 5 and 6. And the bolt insertion holes 13 and 2 of the center water swelling disk 7 It is obtained by a structure in which screwed nut 9 by inserting the bolt 8 to 34 and 44.
[0006]
The waterproofing device for a cable pipe lead-in hole configured as described above is inserted into a cable pipe lead-in hole A penetrating a concrete wall of a building, and a bolt 8 and a nut 9 are screwed. The peripheral projecting pieces 25 of 3 and 4 are pressed radially outward by the outer peripheral edges 35 of the inner interposed rubber disks 5 and 6 and are brought into close contact with the inner peripheral surface of the cable pipe lead-in hole A, so that the water stopping device for the cable pipe lead-in hole. Is fixed. When rainwater or the like enters the cable pipe entry hole, the central water swelling disk 7 absorbs water and swells, and its outer peripheral edge 47 is strongly pressed and adhered to the inner peripheral surface of the cable pipe entry hole. The gap between the hole and the inlet hole A is closed in a watertight manner, so that intrusion of rainwater or the like is prevented.
[0007]
Even if there is no water in the cable pipe draw-in hole A and the center water swelling disk 7 shrinks and the pressing force of the outer peripheral edge 47 against the inner peripheral surface of the cable pipe draw-in hole disappears, the rubber disk packings 3 and 4 with the edge protruding pieces are provided. Since the edge projecting piece 25 is fixed to the inner peripheral surface of the lead-in hole, there is no possibility that the cable lead-in tube water stopping device will come off the mounting position in the lead-in hole A.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1 of a front view and FIG. 2 of a longitudinal sectional view of a first embodiment of the present invention, a water stopping device for a cable pipe draw-in hole has a fan-shaped clamping press plate 1 and a rear surface disposed on the front side. Side-located fan-shaped clamping presser plates 2, rubber disc packings 3 and 4 with edge protruding pieces disposed inside the front and rear fan-shaped clamping presser plates 1 and 2, respectively, and the respective rubber discs Inner interposed rubber discs 5 and 6 disposed inside packings 3 and 4, central water swelling disc 7 sandwiched between inner interposed rubber discs 5 and 6, and bolts penetrating these. 8 and a nut 9.
[0009]
The fan-shaped clamping presser plate 1 disposed on the front side and the fan-shaped clamping presser plate 2 disposed on the rear side are made of glass fiber reinforced plastic and are symmetrical. As shown in FIG. Is divided into three fan-shaped plate members 10, and the front-side fan-shaped clamping presser plate 1 is composed of three fan-shaped plates 1a, 1b, and 1c, and the rear-side sector-shaped clamping presser plate 2 is three. Of fan-shaped plates 2a, 2b, and 2c. Each of the fan-shaped plates 10 of these three fan-shaped plates is provided with semicircular notches 11, 11 for inserting a cable lead-in tube on both side edges of each fan-shaped fan, respectively. A bolt insertion hole 13 is provided at a position between the semicircular notches 11. Further, as shown in FIG. 2, a bolt head which is fitted with a bolt head to prevent rotation is provided on the outer surface of the bolt insertion hole 13 of each of the three fan-shaped plate members 10 of the one sector-shaped tightening and holding plate 2. The part fitting portion 14 is provided in a protruding manner. The circular outer diameter formed by the outer circumference of the three fan-shaped plate bodies 10 of the fan-shaped tightening and holding plates 1 and 2 is formed to be slightly smaller than the diameter of the cable pipe lead-in hole B shown in FIG. I do.
[0010]
The rubber disc packings 3 and 4 with the edge protruding pieces are made of rubber such as Hypalon, and the rubber disc packing 3 and the rubber disc packing 4 are symmetrical, as shown in FIG. Cable draw-in pipe insertion holes 21, 22, and 23 are provided at the apexes of the triangle on the rubber disk 20, respectively, and bolt insertion holes 24 are provided at intermediate positions between the holes 21, 22, and 23, respectively. Each of the three cable inlet pipe insertion holes 21, 22, and 23 is provided with a cut portion 26 by making a cut from the outer peripheral edge 27 of the rubber disc 20 toward each hole edge. Further, on one side surface of the rubber disk 20, a continuous edge extends over an outer peripheral edge 27 of the rubber disk 20, an edge 28 of the cutout portion 26, and an edge 29 of each of the three cable inlet pipe insertion holes 21, 22, 23. A protruding piece 25 is provided. As shown in the cross section in FIG. 2, the edge protruding piece 25 has an inner peripheral surface formed into a tapered surface such that the base on the side surface of the rubber disk 20 is thicker and thinner toward the tip. In FIG. 4, d1 indicates a thick portion at the base of the edge protruding piece 25, and d2 indicates an exaggerated thick portion at the tip. The outer diameters of the rubber disc packings 3 and 4 with the edge protruding pieces are formed to be slightly smaller than the diameter of the cable pipe lead-in hole B shown in FIG.
[0011]
The inner rubber discs 5 and 6 are made of rubber such as Hypalon (trade name) and are symmetrical. In each case, as shown in FIG. Insertion holes 31, 32, 33 are provided, and bolt insertion holes 34 are provided at intermediate positions between the holes 31, 32, 33, respectively. In each of the cable lead-in tube insertion holes 31, 32, 33, a cut gap 36 is provided by making a cut from the outer peripheral edge 35 of the rubber disc 30 toward each hole edge. The outer diameter of the inner interposed rubber disks 5, 6 is formed such that the outer peripheral edge 35 abuts on the inner side surface of the edge protruding piece 25 in the outer peripheral edge 27 of the rubber disc packing 3, 4 with the edge protruding piece. I do. The cross section of FIG. 2 shows this state.
[0012]
The one central water swelling disk 7 is a disk made of a water swelling material such as a superabsorbent resin that swells and increases in volume when absorbing water, as shown in FIG. Cable insertion pipe insertion holes 41, 42, and 43 are provided at the apexes of the triangle of the swelling material disk body 40, and bolt insertion holes 44 are provided at intermediate positions between the holes 41, 42, and 43, respectively. In each of the cable inlet pipe insertion holes 41, 42, and 43, a cut portion 46 is provided by making a cut from the outer peripheral edge 47 of the disk body 40 toward each hole edge. Around each of the cable inlet pipe insertion holes 41, 42, and 43, a V-shaped concave groove (shown in FIG. 7) of a concentric circular tearing groove 45 is provided on the surface of the disk body 40, and the diameter is determined according to the cable inlet pipe diameter. Cut to adjust the diameter of the cable entry tube insertion hole. The cut circular groove 45 may be omitted. The outer diameter of the center water swelling disk 7 is formed such that the outer peripheral edge 47 strongly presses and adheres to the inner peripheral surface of the cable pipe lead-in hole B when it swells by absorbing water.
[0013]
Sector-shaped clamping presser plates 1 and 2 configured as described above, rubber disc packings 3 and 4 with edge protruding pieces, inner interposed rubber discs 5 and 6, one central water swelling disc 7, bolts 8, the nut 9 constitutes the water stopping device for a cable pipe draw-in hole of the present invention. One center water swelling disk 7 is arranged at the center, and the inner interposed rubber disk 5 and the inner interposed rubber disk 6 are arranged on both sides of the center water swelling disk 7. On both sides of each of the inner interposed rubber discs 5 and 6 on the both sides, a rubber disc packing 3 with an edge protruding piece and a rubber disc packing 4 with an edge protruding piece are protruded from the inner side face of the rubber disc 20. The outer peripheral edges of the inner interposed rubber disks 5 and 6 are arranged so that the edge protruding pieces 25 face the inner central water swelling disc 7 side, and the outer peripheral edges 27 of the rubber disc packings 3 and 4 with the edge protruding pieces. Is brought into contact with the inner side surface of the edge protruding piece 25. On both sides of each of the inner interposed rubber disks 5 and 6, fan-shaped clamping press plates 1 and 2 made of glass fiber reinforced plastic are arranged, and bolt insertion holes 13 of each of the sector-shaped clamping press plates 1 and 2 and each edge protruding. Insert the bolt 8 into the bolt insertion hole 24 of the rubber disc packings 3 and 4, the bolt insertion hole 34 of each of the inner interposed rubber disks 5 and 6, and the bolt insertion hole 44 of the center water swelling disk 7 and screw the nut 9. Together, this constitutes a water stop device for a cable pipe entry hole.
[0014]
In order to install the water stoppage device for a cable pipe lead-in hole configured as described above in a cable lead-in hole penetrating a concrete wall of a building, a central water supply pipe A shown by a chain line in FIG. The cable lead-in tube insertion hole 41 of the swelling disc 7 is fitted by opening the cutout portion 46 (FIG. 2 shows only one cable lead-in tube A, but other cable lead-in tube insertion holes 42 and 43 are shown). Is the same). At this time, the concentric circular tearing groove 45 around the cable inlet pipe insertion holes 41, 42, 43 is cut off in accordance with the cable inlet pipe diameter, and the hole diameters of the insertion holes 41, 42, 43 are adapted to the cable inlet pipe diameter. The inner interposed rubber discs 5, 6 also have their cable inlet pipe insertion holes 31, 32, 33 cut into the slits 36 to be fitted into the cable inlet pipe A, and the rubber disk packings 3, 4 with edge protruding pieces are also provided. The cut-in portions 26 of the cable inlet pipe insertion holes 21, 22, and 23 are opened so that the cable inlet pipes A are fitted into the cable inlet pipes A, and the semicircular cutouts 11 of the fan-shaped clamping holding plates 1 and 2 are also fitted around the cable inlet pipes A. This cable inlet pipe water stop device is inserted into a cable pipe inlet hole B of a building wall shown by a two-dot chain line in FIG. 2, and a bolt 8 and a nut 9 are screwed into the inside interposed rubber disk. The outer peripheral edges 35 of 5 and 6 press the outer peripheral protruding pieces 25 of the rubber disc packings 3 and 4 radially outward to make close contact with the inner peripheral surface of the cable pipe entrance hole A. Stop Device is fixed.
[00015]
When rainwater or the like enters the cable pipe entry hole, the central water swelling disc 7 absorbs water and swells, and the outer peripheral edge 47 of the central water swelling disc 7 becomes an inner peripheral surface of the cable pipe entry hole due to the increase in volume. , The gap between the cable lead-in tube and the lead-in hole A is closed in a watertight manner, thereby preventing rainwater or the like from entering.
[00016]
Even if there is no water in the cable pipe draw-in hole A and the center water swelling disk 7 shrinks and the pressing force of the outer peripheral edge 47 against the inner peripheral surface of the cable pipe draw-in hole disappears, the rubber disk packings 3 and 4 with the edge protruding pieces are provided. Since the edge projecting piece 25 is pressed and fixed to the inner peripheral surface of the drawing hole, there is no possibility that the cable drawing pipe water stopping device will be displaced from the mounting position in the drawing hole A.
[0017]
【The invention's effect】
As described above, the water blocking device for a cable pipe lead-in hole of a building wall according to the present invention has an inner interposed rubber disc disposed on both sides of a central water swelling disc, and an edge projecting piece protruding on both sides thereof. A rubber disc packing with a protruding piece is arranged, the peripheral edge of the inner interposed rubber disc is brought into contact with the inside of the edge protruding piece, and a glass fiber reinforced plastic fan-shaped clamp is attached to both sides of the rubber disc packing with both side protruding pieces. The holding plate is arranged and tightened with bolts and nuts.Then, insert it into the cable pipe penetration hole that penetrates the concrete wall of the building, and tighten the bolts and nuts. Since the edge protruding plate piece of the disc packing strongly contacts and engages with the inner peripheral surface of the drawing hole, it can be fixed and mounted in the drawing hole. When rainwater or the like enters the drawing hole, the central water swelling disk absorbs and swells, and its outer peripheral edge comes into close contact with the inner peripheral surface of the cable pipe drawing hole, so that the gap between the cable pipe drawing hole and the cable drawing pipe is formed. Can be completely closed to prevent intrusion of rainwater or the like.
[0018]
Even if there is no water in the cable pipe entry hole and the volume of the central water swelling disc shrinks and the adhesion to the inner peripheral surface of the cable pipe entry hole is lost, the edge projection piece of the rubber disc packing with the edge projection piece is the cable pipe Since it is pressed and fixed to the inner peripheral surface of the drawing hole, there is no danger that the cable drawing water stopping device will come off from the mounting position.
[Brief description of the drawings]
1 is an end view of one embodiment of the present invention; FIG. 2 is a longitudinal sectional view of one embodiment of the present invention; FIG. 3 is a front view of one embodiment of a fan-shaped clamping press plate of the present invention; FIG. 5 is a front view of one embodiment of the rubber disc packing with the edge protruding piece of the present invention. FIG. 5 is a front view of one embodiment of the inner interposed rubber disc of the present invention. FIG. FIG. 7 is a front view of one embodiment. FIG. 7 is a cross-sectional view showing a concentric circular V-shaped groove of a center water-swelling disk of the present invention.
1, 2: Sector-shaped clamping presser plate 3, 4: Rubber disc packing 20 with marginal protrusion piece 20: Rubber disc packing 3, 4, 23, rubber disc packing 4 with marginal protrusion piece: Rubber disc packing 3 with marginal protrusion piece 4, cable insertion pipe insertion hole 25: rubber disc packing with marginal projection piece 3, margin projection piece 27: disc outer peripheral edge 29 of rubber disc 20: edge 5 of cable insertion pipe insertion holes 21, 22, 23. , 6: inner interposed rubber disc 35: outer peripheral edge of inner interposed rubber disc 5, 6, 7: central water swelling disc 13, 24, 34, 44: bolt insertion hole 8: bolt 9: nut

Claims (1)

An inner interposed rubber disc is arranged on both sides of the central water swelling disc, and on both sides of the inner interposed rubber disc, respectively, from the outer peripheral edge of the disc on the inner side surface of the rubber disc to the edge of the cable inlet pipe insertion hole. A rubber disk packing with an edge protruding piece provided with a continuous edge protruding piece is disposed, and an outer peripheral edge of an inner interposed rubber disc is brought into contact with the inside of the edge protruding piece, and the rubber circle with each edge protruding piece is provided. A glass-fiber-reinforced plastic fan-shaped tightening press plate is arranged on each side of the plate packing, and the fan-shaped tightening press plates on both sides are tightened with bolts and nuts. Water stop device.

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