Sleeve hole blocking fixture

Abstract

To provide a sleeve hole closing fixture that can be reused, thereby reducing costs associated with installing piping. [Solution] The fixing device 1 used in the sleeve hole filling method has a cylindrical portion 10 into which piping can be inserted, a plate-shaped flange portion 11 extending radially from one end of the cylindrical portion 10 relative to the central axis of the cylindrical portion 10, and a slit 12 formed along the central axis of the cylindrical portion 10 from the outer edge of the flange portion 11 to the other end of the cylindrical portion 10, the cylindrical portion 10 and the flange portion 11 being elastically deformable, and further has a hook-and-loop fastener 20 that holds both circumferential ends of the cylindrical portion 10, separated by the slit, in an overlapping state.

Description

[Technical Field]

[0001] This device relates to a sleeve hole closing fixture used when installing pipes, ducts, etc. in a building and backfilling the gap between the wall of the sleeve hole and the pipe with mortar or the like. [Background technology]

[0002] Conventionally, after a pipe or duct has been passed through a sleeve hole (through hole) provided in a concrete structure, the gap between the wall of the sleeve hole and the pipe is generally backfilled with mortar, etc. In particular, when the sleeve hole extends vertically and mortar is poured from above, a fixture is attached to the pipe and covers the vicinity of the edge of the lower end of the sleeve hole, thereby blocking the gap between the wall of the sleeve hole and the pipe.

[0003] Conventionally, one such technique is described in Patent Document 1. Patent Document 1 discloses a backfilling construction method in which, after arranging a pipe in a pipe hole formed in the floor slab of a building, two flat opening blocking members with semicircular recesses are adhered to the underside of the floor slab, and a blocking material is filled from above the pipe hole between the outer surface of the pipe and the inner surface of the pipe hole to block the pipe penetration. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6396734 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the opening closure member described in Patent Document 1 is bent so that the bent portion formed in the semicircular recess faces the pipe, making it difficult to reuse a used opening closure member if the outer diameter of the portion of the pipe where the opening closure member is attached changes. If the opening closure member cannot be reused, a new one must be purchased, which incurs costs. Therefore, there is a need for a fastener that can be reused even if the outer diameter of the portion of the pipe where the opening closure member is attached changes.

[0006] The purpose of this invention is to solve these problems and provide a sleeve hole closing fixture that can be reused, thereby reducing the costs associated with installing piping. [Means for solving the problem]

[0007] To achieve the above object, the present invention has the following configuration.

[0008] (1) a cylindrical portion (e.g., cylindrical portion 10) into which a pipe can be inserted; a plate-shaped flange portion (for example, flange portion 11) extending from one end of the cylindrical portion in a radial direction relative to the central axis of the cylindrical portion; a slit (e.g., slit 12) formed along the central axis of the cylindrical portion from the outer edge of the flange portion to the other end of the cylindrical portion, The sleeve hole closing fixing device is characterized in that the tubular portion and the flange portion are elastically deformable, and further has a retaining member (e.g., a hook-and-loop fastener 20, a rubber belt 30) that holds both circumferential ends of the tubular portion, separated by the slit, in an overlapping state.

[0009] According to (1), the cylindrical portion and the flange are elastically deformable, and the retaining member can hold both circumferential ends of the cylindrical portion in an overlapping state. This allows the cylindrical portion to be reduced in diameter, enabling it to be attached to pipes of different outer diameters in a tight fit. Furthermore, the cylindrical portion and the flange can be removed from the pipe by sliding the cylindrical portion relative to the pipe or by elastically deforming the cylindrical portion and the flange to open the slit. Therefore, after using the fixture to embed mortar, the fixture can be removed so that its original shape is preserved. This allows the fixture to be reused, thereby providing a sleeve hole closing fixture that reduces the cost of installing the pipe.

[0010] (2) In (1), the holding member is a hook-and-loop fastener (for example, hook-and-loop fastener 20) that connects both circumferential ends of the cylindrical portion.

[0011] According to (2), it is possible to hold both circumferential ends of the cylindrical portion in an overlapping state with a simple structure, and it is possible to easily attach the sleeve hole blocking fixture to the piping.

[0012] (3) In (1) and (2), a sleeve hole closing fixture is characterized in that a flexible member (for example, flexible member 40) is disposed inside the cylindrical portion.

[0013] According to (3), the gap between the cylindrical portion and the pipe can be reliably sealed by the flexible member, which prevents the mortar from passing through the gap between the cylindrical portion and the pipe when filling the gap between the pipe and the sleeve hole with mortar. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a sleeve hole closing fixture that can be reused, thereby reducing the costs associated with installing piping. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view schematically illustrating the appearance of a fixture 1 according to an embodiment of the present invention. [Figure 2] 1 is an explanatory diagram showing a schematic view of the appearance of a fixture 1 according to an embodiment of the present invention. [Figure 3] 1 is an explanatory view showing a state in which the diameter of the fixing device 1 according to an embodiment of the present invention is reduced. [Figure 4] 1 is a side view showing a state in which a fixture 1 according to an embodiment of the present invention is used. [Figure 5] 10 is a plan view showing the appearance of a fixture 1 according to another embodiment of the present invention. FIG. [Figure 6] 10 is a diagram showing the appearance of a fixture 1 according to another embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0017] Fig. 1 is a perspective view showing the appearance of a fixture 1 according to one embodiment of the present invention. Fig. 2 is an explanatory diagram showing the appearance of fixture 1 according to one embodiment of the present invention, with Fig. 2(a) being a plan view and Fig. 2(b) being a front view.

[0018] [Basic configuration of fixture 1] The fixture 1 is used for installing piping by the sleeve hole filling method, and as shown in FIG. 1, includes a cylindrical portion 10, a flange portion 11, a slit 12, and a hook-and-loop fastener 20.

[0019] The cylindrical portion 10 is a cylinder having an inner diameter large enough to allow the piping 100 (see FIG. 3(a)) to pass through it. The flange portion 11 is a ring-shaped disk extending radially from one end of the cylindrical portion 10.

[0020] The slit 12 is formed along the central axis of the cylindrical portion 10, from the outer edge of the flange 11 through one end of the cylindrical portion 10 to the other end of the cylindrical portion 10. This slit 12 allows the cylindrical portion 10 to be elastically deformed in the circumferential direction, and both circumferential ends of the cylindrical portion 10 separated by the slit 12 can be expanded or overlapped. The flange 11 can also be curved by elastic deformation.

[0021] The hook and loop fastener 20 has a hook portion 20a in which fine hook-shaped fibers are arranged on a rectangular sheet surface, and a loop portion 20b in which fine ring-shaped fibers are arranged on a rectangular sheet surface. The hook portion 20a is attached to the surface of one end of the cylindrical portion 10 in the circumferential direction, and the loop portion 20b is attached to the back surface of the other end of the cylindrical portion 10 in the circumferential direction.

[0022] 3A and 3B are explanatory views showing a state in which the diameter of the fixture 1 according to one embodiment of the present invention is reduced, with Fig. 3(a) being a plan view and Fig. 3(b) being a side view. In fastener 1, the surface of one circumferential end of cylindrical portion 10 and flange portion 11 is overlapped with the back surface of the other circumferential end of cylindrical portion 10 and flange portion 11 to connect hook portion 20a and loop portion 20b, thereby enabling the diameter of cylindrical portion 10 to be reduced. At this time, flange portion 11 also curves into a funnel shape. Furthermore, by releasing the connection between hook portion 20a and loop portion 20b, cylindrical portion 10 can be elastically deformed so as to widen slit 12.

[0023] [How to use fixture 1] Next, the operation of filling the gap between the vertically penetrating sleeve hole and the pipe using the fixture 1 will be described.

[0024] FIG. 4 is a side view showing the state in which the fixture 1 according to one embodiment of the present invention is used. First, the pipe 100 is passed through the sleeve hole 101 formed in the ceiling. Next, the fixture 1 is attached to the pipe 100 on the lower floor side. For example, the cylindrical portion 10 is inserted from the bottom end of the pipe 100 so that the flange portion 11 faces the ceiling. Alternatively, the slit 12 is widened and the fixture 1 is attached from the side of the cylindrical portion 10. Note that the fixture 1 attached to the pipe 100 has a cylindrical portion 10 with an inner diameter longer than the inner diameter of the pipe 100.

[0025] Next, fixture 1 is slid upward along piping 100, and the lower part of the gap between sleeve hole 101 and piping 100 is closed by flange portion 11. At this time, fixture 1 may be temporarily fixed to piping 100 by reducing the diameter of cylindrical portion 10 to connect hook portion 20a and loop portion 20b, and then slid.

[0026] After sliding fixture 1 upward, cylindrical portion 10 is reduced in diameter to connect hook portion 20a and loop portion 20b, thereby fixing fixture 1 to pipe 100 so that the inner surface of cylindrical portion 10 is in close contact with the outer surface of pipe 100. At this time, rubber belt 30 may be wrapped around cylindrical portion 10 to make the inner surface of cylindrical portion 10 in close contact with pipe 100.

[0027] Next, mortar 102 is poured into sleeve hole 101 from the upper floor to fill the gap between sleeve hole 101 and pipe 100. Finally, the work is completed by removing fixing device 1. Fixing device 1 is removed by undoing rubber belt 30, releasing hook-and-loop fastener 20, and lowering fixing device 1 to remove it from the bottom end of pipe 100, or by widening slit 12 and removing fixing device 1 to the side. Note that when fixing device 1 is lowered and removed from the bottom end of pipe 100, fixing device 1 can retain its original shape. When slit 12 is widened and fixing device 1 is removed to the side, fixing device 1 can retain its original shape due to elastic deformation as long as excessive force is not applied to fixing device 1.

[0028] [Action and effect] According to the present embodiment configured as described above, the following advantageous effects are achieved. According to fastener 1 of this embodiment, cylindrical portion 10 and flange portion 11 are elastically deformable, and hook-and-loop fastener 20 can hold both circumferential ends of cylindrical portion 10 in an overlapping state, making it possible to reduce the diameter of cylindrical portion 10 and attach cylindrical portion 10 to pipe 100 in close contact. Furthermore, after being used once to embed mortar 102, fastener 1 can be removed from the bottom end or by widening slit 12 and removing fastener 1 to the side, and the original shape can be retained. This makes fastener 1 reusable, thereby reducing the cost of installing pipes.

[0029] Furthermore, according to this embodiment, cylindrical portion 10 is elastically deformable and can be reduced in diameter, so the inner diameter of cylindrical portion 10 can be adjusted to the outer diameter of pipe 100. This makes it possible to attach fixture 1 to pipes 100 with different outer diameters, eliminating the need to prepare fixtures 1 for different diameters. This allows for a corresponding reduction in the cost of piping work.

[0030] Furthermore, according to this embodiment, the hook-and-loop fastener 20 can hold both circumferential ends of the cylindrical portion 10 in an overlapping state, making it possible to easily attach the fixing device 1 to the piping with a simple structure.

[0031] Although the embodiments of the present invention have been described above, the embodiments of the present invention are not limited to the above. For example, as shown in Figure 5, a flexible member 40 such as rubber or sponge may be disposed inside the cylindrical portion 10. This allows the flexible member 40 to reliably seal the gap between the cylindrical portion 10 and the piping 100, preventing mortar from passing through between the cylindrical portion and the piping when filling the gap between the piping and the sleeve hole.

[0032] Furthermore, in the embodiment described above, one slit 12 is made, but this is not limiting. Two slits 12 may be made to divide the cylindrical portion 10 and the flange portion 11 equally in half, and hook-and-loop fasteners 20 may be attached to both circumferential ends of the cylindrical portion 10 and the flange portion 11. The two halves of the cylindrical portion 10 and the flange portion 11 may then be positioned to sandwich the piping 100 from both sides, and the hook-and-loop fasteners 20 at both ends may be connected to attach the fastener 1. This allows the fastener 1 to be removed from the piping 100 while retaining its original shape, making the fastener 1 reusable.

[0033] Furthermore, according to the above-described embodiment, the flange 11 is formed flat in the normal state, but as shown in FIG. 6, the surface of the flange 11 may be formed in two steps so that the central portion of the flange 11 is lower, and furthermore, a bent portion extending upward may be formed on the outer periphery of the flange 11. [Explanation of symbols]

[0034] 1 Fixture 10 Cylindrical part 11 Tsuba 12 Cuts 20 hook and loop fastener 20a hook part 20b Loop section 30 Rubber Belt 40 Flexible member 100 Piping 101 Sleeve hole 102 Mortar

Claims

1. a cylindrical portion into which a pipe can be inserted; a plate-shaped flange portion extending from one end of the cylindrical portion in a radial direction relative to a central axis of the cylindrical portion; a slit formed along the central axis of the cylindrical portion from the outer edge of the flange portion to the other end of the cylindrical portion, A sleeve hole closing fixing device characterized in that the tubular portion and the flange portion are elastically deformable, and further has a retaining member that holds both circumferential ends of the tubular portion, separated by the slit, in an overlapping state.

2. 2. The sleeve hole closing fixture according to claim 1, wherein the holding member is a hook-and-loop fastener that connects both circumferential ends of the cylindrical portion.

3. 3. The sleeve hole closing fixture according to claim 1, wherein a flexible member is disposed inside the cylindrical portion.

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