JPH0564591U - Water stop - Google Patents

Abstract

(57) [Abstract] [Purpose] To reliably prevent water leakage from the outer circumference of a concrete pool, a pipe inserted through a wall of a pond, or a tubular pipe sleeve formed on the outer periphery of the pipe. It can be manufactured and installed at an extremely low cost. In a waterproofing device for preventing water leakage from the outer circumference of a pipe, a peripheral edge of an insertion hole 17 of a collar 12 having a circular insertion hole 17 into which a pipe 20 can be inserted is bulged to one side to form recesses 33, 4
3, the injection groove 3 extending from the recess to the outer periphery of the collar
4, 44 and an air vent groove are provided in the joint surfaces 36, 46 formed in the axial direction orthogonal to the axial direction of the insertion hole, respectively, and the injection groove and the air vent groove are symmetrical with respect to the axial center line of the insertion hole. The two collars are provided at symmetrical positions with respect to the center line 19, and the two joint surfaces of the two collars are joined to the two injection grooves and the two air bleeding grooves of the two collars at the corresponding positions, respectively. And the annular cavity 13 is formed by the two recesses that are joined at the corresponding positions of both collars. When the filling material 21 is injected into the injection hole 14 to fill the annular space 13, the collar 12 of the water blocking tool 10 prevents water leakage from the outer circumference of the pipe 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproofing device, and more particularly to a waterproofing device that prevents water leakage from the outer circumferences of various pipes to concrete ponds and water tanks.

[0002]

[Prior Art]

 As shown in FIGS. 7 to 10, conventionally, various pipes for concrete pools, ponds and water tanks, for example, water supply 5a, drainage 5b, overflow 5c, and water discharge 5d pipes 5 have arbitrary thicknesses such as side walls. In order to form the walls of the molds 1, the molds 1 and 1 are opposed to each other in a horizontal direction with a predetermined gap, and a horizontal gap can be formed in the molds 1 and 1 to allow caulking work described later on the outer periphery of the pipe 5. The iron pipe sleeve 3 having the inner diameter is inserted. After fixing the iron pipe sleeve 3 with the molds 1 and 1, concrete 4 is poured into the molds 1 and 1 while vibrating, and after the concrete 4 is solidified, the molds 1 and 1 are fixed. If there is concrete that has been removed and has flowed into the iron pipe sleeve 3, remove it, insert the pipe 5, and manually move from the center to the opening between the outer periphery of the pipe 5 and the inner wall of the iron pipe sleeve 3. Then, a method was adopted in which hemp thread 6 and lead thread 7 were sequentially packed and sealed with resin 8 (Fig. 8). However, the concrete 4 poured into the molds 1 and 1 often does not reach the lower portion of the outer circumference of the iron pipe sleeve 3 sufficiently, and a void 4'is formed in this portion, and through this void, Water leakage was inevitably occurring. In addition, the manual filling of the hemp thread 6 or the like (caulking) is not always performed strictly, and when the caulking is insufficient, water leakage occurs from here.

Therefore, as a conventional water shut-off tool, an iron pipe sleeve 9 with a collar in which a collar 2 having a predetermined diameter is welded to the outer periphery of the iron pipe sleeve 3 has been proposed. There is a concrete 4 that is made to spread sufficiently.

[0004]

[Problems to be solved by the device]

 In the conventional water shut-off tool, concrete can be sent under the outer circumference of the iron pipe sleeve with collar 9 to prevent the generation of voids, and the brim 2 can prevent water leakage from the outer circumference of the iron pipe sleeve with collar 9. However, since the caulking is indispensable, there remains a problem that water leakage from the part cannot be eliminated.

It is obvious that no matter how closely the inner diameter of the flanged iron pipe sleeve 9 is adjusted to the outer diameter of the pipe 5, it is not possible to prevent leakage of water with pressure, and therefore the caulking is performed. Because it is essential.

Further, the pipe 5 has various diameters, and various materials such as iron, stainless steel, vinyl chloride, and lining (coated with synthetic resin inside and outside the pipe) are used. Since there are various gaps, that is, wall thicknesses, various types of iron pipe sleeves with inner diameters corresponding to various types of pipe outer diameters and various types of inner diameter collars corresponding to the outer diameters of the iron pipe sleeves are used. It is necessary to prepare an iron pipe sleeve 3 having an appropriate diameter, to select an iron pipe sleeve 3 having an appropriate diameter, and appropriately select a collar 2 having an inner diameter on the outer periphery thereof for welding. However, since this work cannot be carried out on-site in reality, it becomes a factory work, and the work of preparing the manufacturing drawings for preparing the above-mentioned flanged iron pipe sleeve 9 that appropriately corresponds to the pipe 5 is complicated and long. It has the drawback of being time consuming and extremely expensive.

The present invention was developed in order to solve the problems and drawbacks of the above-mentioned prior art, and can be manufactured and installed at an extremely low cost, and has a tubular pipe sleeve having no pipe or a collar. It is an object of the present invention to provide a waterproofing device that can reliably prevent water leakage from the outer circumference.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in the water stop implement of the present invention, concrete pool, water supply / drainage 5a, 5b inserted into a wall 24 such as an outer wall or a bottom wall of a pond or an aquarium, piping for overflow, etc. In order to prevent water leakage from the outer periphery such as 5c, an annular collar 12 having a circular insertion hole 17 into which the pipe 20 can be inserted is provided, and a series of annular void portions 13 is formed on the inner periphery of the collar 12. Form. Then, an injection hole 14 and an air vent hole 15 for injecting a filler 21 such as a filler or an adhesive, which communicates with the annular space 13 and the outer periphery of the collar 12, are provided in the wall thickness of the collar 12, respectively. It is a thing.

Further, a peripheral edge of the collar 17 having a circular insertion hole 17 into which the pipe 20 can be inserted is bulged to form a concave portion 33, and an injection groove extending from the concave portion to the outer periphery of the collar is formed. 34 and the air vent groove 35 are respectively provided on the joint surfaces formed in the direction orthogonal to the axial direction of the insertion hole 17, and the injection groove and the air vent groove are symmetrical center lines orthogonal to the axial center line of the insertion hole. It is characterized in that it is provided at 19 in a symmetrical position.

The collar 12 is composed of a left collar portion 32 on the left side in the axial direction of the pipe 20 and a right collar portion 42 on the right side in the axial direction, and the insertion hole 17 of the left collar portion 32 is formed. The peripheral edge is bulged to one side to form a concave portion 33, and the concave portion 33 and the injection groove 34 and the air vent groove 35 reaching the outer periphery of the left side flange portion 32 are respectively joined to the right side joint surface 36 of the left side flange portion 32. To be installed. On the other hand, the periphery of the insertion hole 17 of the right side flange portion 42 is formed so as to bulge in a direction opposite to the bulging direction of the recess portion 33 of the left side flange portion to form a recess portion 43, and the recess portion 43 and the right side flange portion are provided. An injection groove 44 and an air vent groove 45 extending to the outer periphery of 42 are provided on the joint surface 46 on the left side of the right flange portion 42, respectively. Then, the two joint surfaces 36, 46 of the left collar portion 32 and the right collar portion 42 are joined, and the two injection grooves 34, 44 of the left collar portion and the right collar portion are joined at corresponding positions for injection. A hole 14 is formed, and two air vent grooves 35, 45 on the left and right flanges are joined at corresponding positions to form an air vent hole 15, and two air vents on the left and right flanges are formed. The concave portions 33 and 43 are joined at corresponding positions to form the annular void portion 13.

Further, a cylindrical sleeve 11 (31, 41) is provided, in which peripheral edges of the insertion hole 17 into which the pipe 20 can be freely inserted are projected in mutually opposite directions, and the peripheral surface of the sleeve 11 (31, 41) is provided. A series of annular voids 13 can be formed between the peripheral edge of the insertion hole 17 and.

Further, the respective joint surfaces 36, 46 of the left collar portion 32 and the right collar portion 42 are formed in a direction orthogonal to the axial direction of the insertion holes 17 of the left collar portion and the right collar portion, and The two injection grooves 34, 44 and the two air vent grooves 35, 45 of the left collar portion 32 and the right collar portion 42 are symmetrical with respect to a symmetrical center line 19 orthogonal to the axial center line 18 of the insertion hole 17. It is preferably provided in a position.

The pipe 20 is a pipe 25 for water supply / drainage, overflow, etc. inserted through the wall portion, or a tubular pipe sleeve 29 formed on the outer periphery of the pipe 25.

[0014]

[Action]

 Therefore, a short pipe having a joint at the rear end is used, a hole is provided in one of the molds, and an insertion hole 17 having an inner diameter corresponding to the outer diameter of the pipe 20 is used as the insertion hole 17 of the waterproofing device 10. The pipe 20 is directly inserted, and a filling material 21 such as an adhesive or a filling material is injected through an injection hole 14 provided in the collar 12. The filling 21 is filled in the space between the outer peripheral surface of the pipe 20 and the annular space 13, the air in the space is discharged to the outside through the air vent hole 15, and the water stop 10 is fixed to the outer circumference of the pipe 20. Then, by fixing the position with the formwork and injecting concrete between the formwork, it is possible to attach the sleeve with the flange directly to the pipe without the need for caulking work. In addition, the insertion hole 17 of the water stoppage tool 10 having an inner diameter insertion hole corresponding to the outer diameter of the sleeve is fitted on the outer circumference of the iron pipe sleeve without a collar to fill the annular gap 13 of the water stoppage tool 10 with the filler 21. If the pipe is filled with water, the work can be performed as usual without making holes in the formwork, and sufficient caulking can be performed between the pipe inserted into the iron pipe sleeve and the iron pipe sleeve. The filler 21 and the collar 12 filled in 13 ensure a waterproof function.

In addition, the left collar so as to join the joint surface 36 of the left collar portion 32 and the joint surface 46 of the right collar portion 42 having the insertion hole 17 with the inner diameter corresponding to the outer diameter of the pipe 20. The tube 20 is fitted into the insertion holes 17, 17 of the portion 32 and the right side flange portion 42. Then, when the filling material 21 is injected into the injection hole 14 formed by the two injection grooves 34 and 44 of the left collar portion 32 and the right collar portion 42, the filling material 21 is filled with the left collar portion 32 and the right collar portion 42. The second air vent groove 35 of the left flange portion 32 and the right flange portion 42 flows into and fills the annular void portion 13 formed by the two concave portions 33 and 43 and the void formed at the outer periphery of the pipe 20. , 45 to flow into the air vent hole 15, and this water stop device 10 reliably performs a water stop action.

[0016]

【Example】

 An embodiment will be described with reference to the drawings. In FIG. 1 and FIG. 4, the water stop 10 is made of a material such as metal or plastic, and has an insertion hole 17 into which a pipe 20 can be inserted and inserted. It is composed of a left flange portion 32 arranged on the left side in the axial direction and a right flange portion 42 arranged on the right side in the axial direction of the pipe 20.

The left brim portion 32 and the right brim portion 42 are not particularly limited in outer shape, but are formed into an annular shape having a constant straight diameter, and are circular insertion holes into which the pipe 20 can be inserted and inserted at the inner peripheral edge of the brim. Forming 17. An inner peripheral edge of the left collar portion 32 is formed so as to bulge to the left in the axial direction of the tube 20 to form a concave portion 33. Further, the peripheral edge of the recess 33 of the left collar portion 32 is cylindrically extended to the left in the axial direction of the tube 20, and the left sleeve portion 31 is formed to project, and the pipe 20 is formed on the inner circumference of the left sleeve portion 31. The insertion hole 17 is formed so that it can be inserted.

Further, a joint surface 36 orthogonal to the axial direction of the pipe 20 is formed by the right axial side surface of the left collar portion 32, and the concave portion 33 and the left collar portion 32 are formed on the joint surface 36. An injection groove 34 and an air bleed groove 35, which form a groove with a semicircular cross section, are provided to reach the outer circumference of the air groove.

On the other hand, the right side flange portion 42 is formed to have an outer shape similar to that of the left side flange portion 32 described above, and has a substantially similar configuration, and the peripheral edge of the insertion hole 17 of the right side flange portion 42 is connected to the pipe 20. A concave portion 43 is formed by bulging to the left in the axial direction.

Further, the peripheral edge of the insertion hole 17 of the right side flange portion 42 is cylindrical rightward in the axial direction of the tube 20, that is, in the direction opposite to the bulging direction of the recess 33 of the left side flange portion 32. The one-sided sleeve portion 41 is formed to project, and the insertion hole 17 into which the pipe 20 can be inserted and inserted is formed on the inner circumference of the right side sleeve portion 41.

Further, a joint surface 46 orthogonal to the axial direction of the pipe 20 is formed by the right side surface of the right side flange portion 42 in the axial direction, and the concave portion 43 and the right side flange portion 42 are formed in the joint surface 46. An injecting groove 44 and an air bleeding groove 45 having the same diameter as the injecting groove 34 and the air bleeding groove 35, which form a groove having a semicircular cross section, are respectively provided to the outer circumference of

As shown in FIGS. 1 and 4, the recess 33 and the recess 43 may be linearly inclined in a cross section in the axial direction of the tube 20, or may be curved. In addition, the injection grooves 34, 44 and the air vent grooves 35, 45 of the left collar portion 32 and the right collar portion 42 join the joint surface 36 of the left collar portion 32 and the joint surface 46 of the right collar portion 42. In this state, the injection groove 34 and the injection groove 44, and the air bleed groove 35 and the air bleed groove 45 are joined at corresponding positions to form a passage having a circular cross section.

The shapes of the injection grooves 34, 44 and the air vent grooves 35, 45 are not limited to the semicircular cross section.

Therefore, the waterproofing device 10 joins the joint surface 36 of the left collar portion 32 and the joint surface 46 of the right collar portion 42, and joins the collar 12 between the left collar portion 32 and the right collar portion 42. The left side sleeve portion 31 and the right side sleeve portion 41 form the sleeve 11. Further, the injection groove 34 of the left side flange portion 32 and the injection groove 44 of the right side flange portion 42 are joined at corresponding positions to form the injection hole 14 for injecting the filling material 21 such as an adhesive or a filler. The air vent groove 35 of the collar part 32 and the air vent groove 45 of the right collar part 42 are joined at corresponding positions to form the air vent hole 15 of the water stop 10, and the recess 33 of the left collar part 32 and the right vent part are formed. The concave portion 43 of the rib portion 42 is joined to the corresponding position to form the annular void portion 13 of the water shutoff device 10.

It should be noted that the outer shapes of the left brim portions 32 and 42 forming the brim 12 are not limited to the shapes shown in FIG.

As shown in FIG. 2, the injection grooves 34 and 44 and the air bleeding grooves 35 and 45 of the left flange portion 32 and the right flange portion 42 are arranged in the axial center line 18 of the insertion hole 17 (on the plane of FIG. 2). By providing the symmetric center line 19 orthogonal to the vertical direction) at symmetrical positions, and by providing the injection groove 34 and the air bleeding groove 35 with the same cross-sectional shape, the left side flange portion 32 and the right side flange portion 42 The joint surfaces 36 and 46 have the same shape and are symmetrically positioned. Therefore, two of the left collar portion 32 or the right collar portion 42 are brought into contact with each other at their joint surfaces to join the injection groove 34 and the air vent groove 35 of the left collar portion 32 or the right collar portion 42 at corresponding positions. To do. At the time of construction, if necessary, the outer peripheries of the left brim portion 32 and the right brim portion 42 are clipped at two places, for example, and the filling material 21 is injected into the injection hole 14.

As shown in FIG. 5, the waterproofing device 10 has a left brim portion 32 and a right brim portion 42, respectively, and the left sleeve portion 31 of the waterproofing device 10 in FIG. Alternatively, the right sleeve portion 41 may not be formed. The injection grooves 34 and 44 and the air bleeding grooves 35 and 45 are similar to the left brim portion 32 and the right brim portion 42 of the above embodiment.

It can be configured by joining the joint surfaces 36 and 46 of the left sleeve portion 31 of FIG. 1 with the sleeveless left collar portion 32 or the right collar portion 42 of FIG. 5, or It can also be constituted by the left brim portion 32 of FIG. 5 and the right brim portion 42 of FIG.

Further, the left brim portion 32 and the right brim portion may be integrally formed. That is, in FIG. 1, by forming the joint surface 36 of the left collar portion 32 and the joint surface 46 of the right collar portion 42 into an integral structure, the water stop 10 has an insertion hole 17 into which the pipe 20 can be inserted. Insertion hole 17 of collar 12 (left flange portion 32 and right flange portion 42) A series of annular voids 13 are formed in the peripheral edge of the insertion hole 17, and the peripheral edges of the insertion hole 17 are opposite to each other in the left sleeve portion. 31 and the right side sleeve portion 41 are formed to project, and the left side sleeve portion 31 and the right side sleeve portion 41 constitute the sleeve 11 of the water shut-off device 10. Then, as shown in FIG. 3, an injection hole 14 and an air vent hole 15 that communicate with the outer periphery of the annular space 13 and the collar 12 are provided in the collar 12, respectively.

In the water shut-off device 10 in which the left collar portion 32 and the right collar portion 42 are integrally formed, the sleeve 11 including the left sleeve portion 31 and the right sleeve portion 41 fits the pipe 20. It is formed into a thick-walled cylindrical shape having a freely insertable insertion hole 17, an annular cavity 13 is formed in the inner periphery of the sleeve 11 at a substantially central position in the axial direction of the sleeve 11, and further in the outer periphery of the sleeve 11 in the axial direction. The collar 12 may be formed so as to project at the same position as the annular space 13. Therefore, the sleeve 11 is formed of the left sleeve portion 31 located to the left of the annular space 13 and the right sleeve portion 41 located to the right. Others are the same as the above-mentioned embodiment.

Further, the water shut-off device 10 shown in FIG. 5 has the same structure as the integral structure of the injection groove 44 of the left collar portion 32 of the water shut-off device 10 shown in FIG. The left brim portion 32 and the right brim portion 42, which do not form 41, can be integrally formed.

When the pipe 20 is inserted into the insertion hole 17 of the water shut-off device 10 configured as described above by press fitting as shown in FIG. 1 and the filling material 21 is injected into the injection hole 14, As shown in FIG. 2, the filling material 21 is filled in the space formed by the outer peripheral surface of the pipe 20 and the annular space 13, and the air in the space is pushed out by the filling material 21 and the outer periphery of the collar 12 from the air vent hole 15. It is discharged to the outside.

In FIG. 2, the annular cavity 13 is formed in an endless annular shape on the inner circumference of the collar 12. However, when the distance between the pouches 16 of the injection hole 14 and the air vent hole 15 is reduced, , It does not have to be an endless ring. That is, the filler 21 injected from the injection hole 14 passes through the port 16 of the injection hole 14 that communicates with one end of the annular cavity 13, flows in the annular cavity 13 in the clockwise direction on the plane of FIG. The air flows into the air vent hole 15 through a port 16 of the air vent hole 15 communicating with the other end of the portion 13. At this time, if the insertion hole 17 of the water shut-off device 10 and the outer periphery of the pipe 20 are in a closely fitted state, the distance between the port 16 of the injection hole 14 and the port 16 of the air vent hole 15 is very small, so the port 16, Water leakage does not occur between the inner circumference of the brim 12 and the outer circumference of the pipe 20.

On the contrary, even if there is a slight gap between the insertion hole 17 of the water shut-off device 10 and the outer circumference of the pipe 20, since the distance between the ports 16 and 16 is very small, the filling material 21 is It flows into the gap between the inner circumference of the collar 12 and the outer circumference of the pipe 20 between 16 and prevents this gap, preventing water leakage.

When the pipe 20 is made of plastic such as vinyl chloride, the water stopper 10 is made of the same plastic material as the pipe 20, and if the adhesive 21 for the plastic is used as the filling 21, Since the water stop 10 is adhered to form an integral structure, it is more effective in preventing water leakage.

Further, when the pipe 20 is made of metal such as iron and the water stop device 10 is made of metal or plastic, a filler is used as the filling material 21.

As shown in FIG. 6, when the pipe 20 is a pipe sleeve 29 made of a metal such as iron without a brim as described above, various pipes 25 such as water supply and drainage are inserted into the pipe 20 and the pipe 25 The same caulking as the above-mentioned conventional means is applied between the outer circumference of the pipe and the tube 20. On the other hand, as shown in FIG. 1, when the pipe 20 forms a pipe 25 for direct water supply and drainage, a hole 28 is provided in the form 26 and / or 27, and both ends of the pipe 20 are projected from the hole 28. The pipe 20 is fixed with one and / or both forms 26 and or 27 and concrete 23 is poured. In this case, the pipe 20 becomes short so that the work does not become complicated when removing the formwork 26 (27), but if the joints are provided at both ends or one end, the final piping work is hindered. Don't come

In the case of the water stoppage tool 10 having the sleeve 11, as shown in FIG. 1, one and / or both ends of the sleeve 11 of the water stoppage tool 10 (the left sleeve portion 31 and / or the right sleeve portion). It is also possible to circulate and tighten the band 22 around the outer circumference of 41) and the outer circumference of the pipe 20 to fasten the water stop 10 to the pipe 20, and then inject the filling material 21 into the injection hole 14 of the water stop 10. .. However, since the water stop 10 is made of plastic and the thickness of the sleeve 11 (the left sleeve portion 31 and / or the right sleeve portion 41) is thin, the sleeve 11 is easily deformed by the tightening force of the band 22. The band 22 may be wound around the sleeve 11 and tightened as long as it is pressed against the outer circumference of the pipe 20, but since the water stop 10 is made of metal such as iron, the tightening force of the band 22 is increased. If the sleeve 11 is not easily pressed by the tube 20, the band 22 is wound around the sleeve 11 and the outer circumference of the tube 20 and tightened as described above.

Although caulking and other construction methods are carried out in the same manner as the above-mentioned conventional means, the water blocking tool 10 having the insertion holes 17 with various inner diameters and the brim 12 with various outer diameters is prepared. The pipe 20 is appropriately selected according to the outer diameter or wall thickness of the pipe 20, and the outer periphery of the pipe 20 (25) is fitted into the insertion hole 17 of the water stoppage tool 10 in the field work, so that the outer peripheral surface of the pipe 20 (25) and the annular space. The filling material 21 may be injected and filled into the space between the portions 13 through the injection hole 14 and fixed by a mold. Also, when an iron pipe sleeve is used, iron pipes of various lengths with various inner diameters are prepared, and a predetermined water-stopper is provided according to the distance between the molds 26 and 27, that is, the wall thickness and the outer diameter of the pipe 20 (25). 10 is selected, a water stop is inserted into the outer circumference of the iron pipe on site, and the filling material 21 is filled.

Even when the pipe 20 is a lining pipe, it can be attached without any heat treatment such as welding when attaching the water stop 10, so that the pipe 20 is not damaged as described above. If an adhesive is used as the filling material 21 using the water shut-off device 10 made of the same material, it contributes to more effective water leakage prevention.

[0041]

【effect】

 Since the present invention is configured as described above, it has the following effects.

(1) A collar having a circular insertion hole into which a pipe can be freely inserted is provided, a series of annular voids is formed at the periphery of the insertion hole, and the annular void and the outer periphery of the collar are filled. Since the injection hole and the air vent hole for injecting the filling agent such as an adhesive or an adhesive agent are provided in the collar respectively, the manufacturing cost is extremely low, the construction is simple, and the sleeve is not limited to the iron pipe. It is also possible to use plastics materials such as vinyl chloride that have good corrosion resistance and are highly workable, and it is possible to significantly reduce construction costs.

(2) A tubular sleeve is provided in which the peripheral edges of the insertion hole into which the pipe is freely inserted are formed so as to project in mutually opposite directions, and a series of annular gaps are provided between the peripheral surface of the sleeve and the peripheral edge of the insertion hole. Since the area is formed, the contact area between the insertion hole and the outer circumference of the pipe is large, so that the fitting state with the pipe is good, and it is possible to provide a waterproofing device that facilitates construction.

(3) A collar having a circular insertion hole into which the tube can be inserted is provided, and the collar is composed of a left collar portion on the left side in the axial direction of the tube and a right collar portion on the right side in the axial direction. The recessed portion is formed by bulging the insertion hole peripheral edge of the left side flange portion to one side, and the recessed portion and the injection groove and the air vent groove leading to the outer periphery of the left side flange portion are respectively formed on the right side of the left side flange portion. On the other hand, on the joint surface on the one side, on the other hand, the peripheral edge of the insertion hole of the right side flange is formed so as to bulge in a direction opposite to the bulging direction of the recess of the left side flange, thereby forming a recess, and An injection groove and an air vent groove extending to the outer circumference of the right collar are provided on the left side joint surface of the right collar, respectively, and the two joint surfaces of the left collar part and the right collar part are joined to form the left side joint. The two injection grooves on the collar and right flange are joined at corresponding positions to form an injection hole, and the two air vents on the left and right flanges are joined at corresponding positions to leave an empty space. Since the vent hole is formed and the two recesses on the left and right flanges are joined at the corresponding positions to form the annular void, the structure of each member that constitutes the waterproofing device is simplified. Therefore, it has good workability and is inexpensive.

(4) A tubular sleeve, in which the peripheral edges of insertion holes into which the pipe can be freely inserted and projected in mutually opposite directions, is provided in the left sleeve portion on the left side in the axial direction of the pipe and on the right side in the axial direction. A right side sleeve part, the left side sleeve part is provided on the left side of a recess provided in the peripheral edge of the insertion hole of the left side flange part, while the right side sleeve part is inserted into the right side flange part. Since it is provided on the right side of the recessed portion provided on the periphery of the hole, it is easily attached to the pipe because of the same reason as (2) above, and because of the same reason as (3) above. However, it was possible to provide an inexpensive waterproofing device with good workability.

(5) A recess is formed by bulging one side of the insertion hole periphery of a collar having a circular insertion hole into which a pipe can be inserted, and an injection groove and an air vent groove extending from the recess to the outer periphery of the collar are formed. Since each of them is provided on a joint surface formed in a direction orthogonal to the axial direction of the insertion hole, and the injection groove and the air vent groove are provided at symmetrical positions on a symmetric center line orthogonal to the axial center line of the insertion hole, Since the waterproofing device can be configured with two members having the same shape, it was possible to provide the waterproofing device which can be manufactured at low cost and which has good efficiency in sales, storage and transportation.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a working state of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a plan view of FIG.

4 is an exploded perspective view of FIG. 1. FIG.

FIG. 5 is a cross-sectional view of a working state of an embodiment different from FIG. 1 in the embodiment of the present invention.

FIG. 6 is a cross-sectional view of an embodiment of the present invention, which is different from the embodiment shown in FIGS.

FIG. 7 is a schematic view showing various common pipes such as a pond and a pool.

FIG. 8 is a cross-sectional view showing a conventional technique and showing a construction state when an iron pipe sleeve without a collar is used.

FIG. 9 is a cross-sectional view showing a conventional technique and showing a construction state when an iron pipe sleeve with a collar is used.

FIG. 10 is a perspective view showing a conventional technique.

[Explanation of symbols]

 1,1 Formwork 2 Collar 3 Iron pipe sleeve 4 Concrete 5 Piping 6 Hemp thread 7 Lead thread 8 Resin 9 Iron pipe sleeve with collar 10 Water stopper 11 Sleeve 12 Collar 13 Annular void 14 Injection hole 15 Air vent 16 Port 17 Insertion hole 18 Center line 19 Symmetric center line 20 Pipe 21 Filling 22 Band 23 Concrete 24 Wall 25 Pipes 26, 27 Form 28 Hole 29 Pipe sleeve 31 Left sleeve 32 Left flange 33 Recessed groove 34 Injection groove 35 Air vent groove 36 Joining Surface 41 Right side sleeve part 42 Right side collar part 43 Recessed part 44 Injection groove 45 Air bleeding groove 46 Joining surface

Claims (7)

[Scope of utility model registration request] 1. A water stop fitting for preventing water leakage from the outer circumference of a pipe for water supply / drainage, overflow, etc., which is inserted through a wall portion such as an outer wall or a bottom wall of a concrete pool, pond or water tank, and the pipe can be freely inserted and inserted. A ring-shaped collar having a circular insertion hole, and a series of annular voids formed at the periphery of the insertion hole of the collar, a filler that communicates with the annular cavity and the outer periphery of the collar in the collar or A waterproofing device, characterized in that an injection hole for injecting a filling material such as an adhesive and an air vent hole are formed respectively. 2. A waterproofing device for preventing water leakage from the outer circumference of a pipe for water supply / drainage, overflow, etc., which is inserted into a wall portion such as an outer wall or a bottom wall of a concrete pool, pond or water tank, and an inner ring of the collar. The peripheral edge is bulged to one side to form a concave portion, and in this concave portion, a circular insertion hole into which a pipe can be inserted is formed, and an injection groove and an air vent groove extending from the concave portion to the outer periphery of the collar are respectively formed as described above. It is characterized in that it is provided on a joint surface formed in a direction orthogonal to the axial direction of the insertion hole, and the injection groove and the air vent groove are provided at symmetrical positions with respect to a symmetry center line orthogonal to the axial center line of the insertion hole. Water stop. 3. The two flanges according to claim 2, wherein the two joint surfaces of the two flanges are joined to the injection groove and the air bleed groove of the two flanges at corresponding positions to form an injection hole and an air bleed hole, respectively. A waterproofing device, characterized in that an annular void is formed by two concave portions joined together. 4. A water blocking tool for preventing water leakage from the outer periphery of a pipe for water supply / drainage, overflow, etc., which is inserted through a wall portion such as an outer wall or a bottom wall of a concrete pool, pond or water tank, and a pipe having an annular brim. Of the left side flange portion on the left side in the axial direction and the right side collar portion on the right side in the axial direction, and the inner peripheral edges of the left side collar portion and the right side collar portion are formed to bulge in mutually opposite directions. A concave portion is provided, and a circular insertion hole into which a pipe can be inserted is formed on the inner circumference of the concave portion, and an injection groove and an air bleeding groove reaching the outer periphery of the concave portion, the left collar portion and the right collar portion are respectively left. Formed on the joint surface of the right and left collars, join the two joints of the left and right collars, and correspond to the two injection grooves of the left and right collars. Join at a position to form an injection hole, and join the two air vent grooves on the left and right flanges at the corresponding positions. An air vent hole is formed by forming an air vent hole, and two recesses of a left collar portion and a right collar portion are joined at corresponding positions to form an annular void portion. 5. A tubular sleeve is provided, in which the peripheral edges of the insertion hole into which the pipe is freely inserted are formed so as to project in mutually opposite directions, and a series of annular gaps are formed between the peripheral surface of the sleeve and the peripheral edge of the insertion hole. The water stop implement according to claim 1, 2, or 4. 6. The joint surfaces of the left and right flanges are formed in a direction orthogonal to the axial direction of the insertion holes of the left and right flanges, and the left and right flanges are formed. 5. The injection groove and the air bleeding groove of each of the side flanges are provided at symmetrical positions with respect to a symmetry center line orthogonal to the axial center line of the insertion hole.
Water stop described. 7. The water shut-off device according to claim 1, wherein the pipe is a pipe for water supply / drainage, overflow, etc. inserted through the wall portion or a tubular pipe sleeve formed on the outer periphery of the pipe.