Pipe embedding support structure

Abstract

This invention provides a pipe embedding support structure that improves work efficiency during pipe embedding operations. [Solution] A pipe embedding support structure is provided to close the lower side of the gap between the pipe 18 and the sleeve 10 when a sleeve 10 is positioned above a through hole 16 formed in a floor base 14 that divides a building in the height direction, and a predetermined building material is injected into the gap between the sleeve 10 and the pipe 18 that passes through the through hole 16 and the sleeve 10 to fix the pipe 18 to the floor base 14, comprising an inner flange 28 fixed to the end face of the sleeve 10 on the through hole 16 side, and a ring member 12 having an outer diameter smaller than the inner diameter of the sleeve 10 and an inner diameter corresponding to the outer diameter of the pipe 18, which is inserted into the pipe 18 and abuts against the sleeve 10 side of the inner flange 28 to close the gap between the sleeve 10 and the pipe 18.

Description

Technical Field

[0001] The present invention relates to a pipe embedding support structure used when injecting a building material such as mortar into the gap between a through hole formed in the floor base of a building and a sleeve disposed above the through hole with a pipe passing through, and embedding the pipe.

Background Art

[0002] Conventionally, in the work of arranging pipes through the floors of each floor in a building such as a building, a cylindrical sleeve is used to embed and arrange the pipes.

[0003] FIG. 6(A) shows a conventional pipe embedding operation. Conventionally, first, a sleeve 100 is fixed to the pipe penetration position of the floor base 14 such as a deck plate. The sleeve 100 is fixed by first passing a drill screw 104 through the attachment piece 102 and fixing it to the floor base 14, and then placing concrete so as to surround the sleeve 100 to form a concrete slab 20 having a predetermined thickness.

[0004] Subsequently, a through hole 16 is formed in the internal floor base 14 from above the sleeve 100 by means of cutting or drilling. Next, the pipe 18 is raised through the through hole 16 and the sleeve 100 from the lower floor, and is arranged to penetrate through the floor slab composed of the floor base 14 and the concrete slab 20.

[0005] Next, an operation of injecting and embedding a mortar or the like composed of cement, sand and water into the sleeve 100 through which the pipe 18 passes is to be performed. However, at the bottom of the sleeve 100, there is a cylindrical gap between the through hole 16 and the pipe 18, and the lower side is open, so that mortar cannot be injected as it is.

[0006] Therefore, as shown in Figure 6(B), a sheet member 106 is used to close the gap between the through-hole 16 opened in the lower surface of the floor base 14 and the pipe 18. In this state, mortar is injected into the interior from the top of the sleeve 100, forming a building material embedded fixing part 108 that embeds and fixes the pipe 18.

[0007] The sheet member 106 has a circular opening in the center of a rectangular sheet and can be divided into two sheet members 106 in the middle, as shown in Figure 6(A). One side of the sheet member 106 is detachably provided with a scale surface having multiple circular radial lines on it, and the other side, which is the back side, has an adhesive layer formed on it and is covered with a cover sheet.

[0008] To seal the gap between the through-hole 16 and the pipe 18, the worker uses the scale surface of the divided sealing member 106 to make radial cuts corresponding to the diameter of the pipe 18, peels off the cover sheet to expose the adhesive surface, and attaches it to the underside of the floor base 14 so as to sandwich the gap from both sides, and then presses the cut portion against the perimeter of the pipe 18.

[0009] As shown in Figure 6(B), this seals the gaps so that the mortar does not spill out when the worker injects it, and the mortar can be injected into the sleeve 100 to form the building material embedded fixing part 108 and embed the pipe 18. [Prior art documents] [Patent Documents]

[0010] [Patent Document 1] Utility Model Registration No. 3201881 Gazette [Overview of the project] [Problems that the invention aims to solve]

[0011] However, in such conventional pipe embedding structures, when mortar is injected between the through-hole 16 and the sleeve 100 and the pipe 18 to form a building material embedded fixing part 108, the sheet member 106 that seals the gap to prevent mortar from dripping out onto the underside of the floor base 14, i.e., the ceiling surface of the floor below where the pipe 18 is taken out, remains fixed to the mortar, which can worsen the appearance of the pipe take-out part on the ceiling surface and give the impression of poor construction quality.

[0012] Furthermore, the sheet member 106 used to seal the gap between the sleeve 100 and the through-hole 16 and the pipe 18 with mortar is a disposable component used at each pipe penetration point in the floor base 12, which contributes to increased costs.

[0013] The purpose of this invention is to provide a pipe embedding support structure that improves work efficiency in pipe embedding work. [Means for solving the problem]

[0014] (Pipe embedding support structure) This invention relates to a pipe embedding support structure that seals the lower side of the gap between a pipe and a sleeve when a sleeve is positioned above a through-hole formed in a floor subfloor that divides a building in the vertical direction, and a predetermined building material is injected into the gap between the through-hole and the sleeve of a pipe that passes through the sleeve to fix the pipe to the floor subfloor, An inner flange fixed to the end face of the sleeve on the through-hole side, A ring member having an outer diameter smaller than the inner diameter of the sleeve and an inner diameter corresponding to the outer diameter of the pipe, which is inserted into the pipe and abuts against the sleeve side of the inner flange to seal the gap between the sleeve and the pipe, It is characterized by having the following features.

[0015] (Relationship between diameters) In the pipe embedding support structure, when the inner diameter of the sleeve is D1, the outer diameter of the ring member is D2, the inner diameter of the inner flange is D3, the inner diameter of the ring member is D4, and the outer diameter of the pipe is D5, D1>D2>D3>D4>D5 They have a relationship.

[0016] (Inner flange inner diameter) The inner flange has an inner diameter (D3) that is approximately 20 millimeters (2d) smaller than the inner diameter (D1) of the sleeve.

[0017] (Outer diameter of the ring member) The ring member has an outer diameter (D2) that is approximately several millimeters smaller than the inner diameter (D1) of the sleeve.

[0018] (Fixing of the sleeve) The sleeve is fixed above the floor base in the arranged state.

[0019] Alternatively, the sleeve is fixed below the floor base in the arranged state.

Effect of the invention

[0020] (Effect of the pipe embedding support structure) In the present invention, when a sleeve is arranged above a through hole formed in a floor base that partitions a building in the height direction, and a predetermined building material is injected into the gap between the sleeve and the pipe passing through the through hole and the sleeve, and the pipe is fixed to the floor base, it is a pipe embedding support structure that closes the lower side of the gap between the pipe and the sleeve. It includes an inner flange fixed to the end face on the through hole side of the sleeve, and a ring member that has an outer diameter smaller than the inner diameter of the sleeve and an inner diameter corresponding to the outer diameter of the pipe, is inserted into the pipe, abuts against the sleeve side of the inner flange, and closes the gap between the sleeve and the pipe. By having these components, an inner flange is provided as a stopper at the bottom opening of the sleeve. In a state where the sleeve is set above the opening hole (floor surface) of the floor base, an operator can insert the ring member into the sleeve from above, then pass the pipe through from below, first put rock wool into the gap between the pipe and the sleeve, and then put mortar into it, improving workability.

[0021] (Effect of the relationship between each diameter) When the inner diameter of the sleeve is D1, the outer diameter of the ring member is D2, the inner diameter of the ring member is D4, and the outer diameter of the pipe is D5, the pipe embedding support structure has the relationship of D1 > D2 > D3 > D4 > D5. Therefore, when the pipe with the ring member fitted therein is inserted into the sleeve, the pipe can move due to the gap between the inner diameter of the inner flange fixed to the end face of the sleeve and the outer diameter of the pipe, so that the core deviation can be absorbed.

[0022] (Effect of the inner diameter of the inner flange) Since the inner diameter (D3) of the inner flange is about 20 millimeters smaller than the inner diameter (D1) of the sleeve, the inner flange is provided as a stopper at the bottom opening of the sleeve, and the leakage of rock wool or mortar from below the floor base is reduced, improving the workability.

[0023] (Effect of the outer diameter of the ring member) Since the outer diameter (D2) of the ring member is about several millimeters smaller than the inner diameter (D1) of the sleeve, in the state where the ring member is inserted into the pipe, the pipe can move due to the gap between the inner diameter of the inner flange and the outer diameter of the pipe, so that the core deviation can be absorbed and the workability is improved.

[0024] (Fixing of the sleeve) The sleeve is fixed above the floor base in the arranged state or fixed below the floor base in the arranged state, so that the operator can fix the sleeve from either above or below the floor base, improving the workability.

Brief Description of the Drawings

[0025] [Figure 1] It is an explanatory drawing showing an embodiment of the pipe embedding support structure of the present invention. [Figure 2] It is an explanatory drawing showing the state where the gaps between the sleeve, the inner flange, the ring member and the pipe in FIG. 1 are closed. [Figure 3] It is an explanatory drawing showing the sleeve and the inner flange in FIG. 1. [Figure 4] It is an explanatory drawing showing the ring member in FIG. 1. [Figure 5]Figure 1 is an explanatory diagram showing the insertion of the pipe into the sleeve and the insertion of the ring member into the pipe. [Figure 6] This is an explanatory diagram showing a conventional construction method for securing the gap between a sleeve and a pipe. [Modes for carrying out the invention]

[0026] The following describes in detail, with reference to the drawings, an embodiment of the pipe embedding support structure for pipe embedding work according to the present invention. However, the present invention is not limited to the following embodiments.

[0027] [Basic Concepts of the Embodiment] The embodiment relates to a pipe embedding support structure that includes an inner flange and a ring member to seal the lower side of the gap when, in a case where a sleeve having an inner flange is placed above a through hole formed in the floor base that divides a building in the height direction, a ring member is inserted into a pipe that penetrates the sleeve, and a predetermined building material is injected into the gap between the sleeve, the inner flange of the sleeve, the ring member and the pipe to embed and fix it, the embodiment generally relates to a pipe embedding support structure that includes an inner flange and a ring member to seal the lower side of the gap.

[0028] Here, "sleeve" refers to a cylindrical body, for example, made of sheet metal, having a predetermined inner diameter. The diameter and height are appropriately determined according to the thickness of the pipe or concrete slab through which it passes, and it is fixed to the floor base with mounting pieces provided by spot welding or the like.

[0029] Furthermore, an "internal flange" is a component fixed to the end face of the sleeve on the through-hole side. Its structure is arbitrary, but for example, it is a sheet metal component that is attached by spot welding or the like to a bent piece provided on the inside or outside of the inner circumference of the open end which forms the bottom of the sleeve. The diameter and height are determined appropriately according to the thickness of the piping or floor used.

[0030] Furthermore, a "ring member" is, for example, a metal plate member having an annular shape with an outer diameter corresponding to the inner diameter of the sleeve and an inner diameter corresponding to the outer diameter of the pipe. Even when used with the same sleeve, multiple types of ring members with inner diameters corresponding to different types of pipe outer diameters are available, and a ring member corresponding to the pipe to be embedded can be selected from among them.

[0031] Furthermore, "building materials" refer to rock wool, which is made by melting rocks (minerals) or blast furnace slag at high temperatures and turning it into fibers, and mortar, which is made by mixing cement and sand with water. These materials are used as fire-resistant materials, insulation materials, sound-absorbing materials, etc., in buildings.

[0032] The pipe burial support structure of this embodiment comprises an inner flange fixed to the end face of the sleeve on the through-hole side, and a ring member having an outer diameter smaller than the inner diameter of the sleeve and an inner diameter corresponding to the outer diameter of the pipe, which is fitted into the pipe and abuts against the sleeve side of the inner flange to close the gap between the sleeve and the pipe. When the inner diameter of the sleeve is D1, the outer diameter of the ring member is D2, the inner diameter of the inner flange is D3, the inner diameter of the ring member is D4, and the outer diameter of the pipe is D5, the relationship D1 > D2 > D3 > D4 > D5 exists.

[0033] [Specific details of the embodiment] First, an embodiment of the pipe embedding support structure of this embodiment will be described in more detail. In this description, refer to Figure 1, which shows an embodiment of the pipe embedding support structure of this invention attached to a pipe penetrating a through hole and sleeve before the building material is injected; Figure 2, which shows the sleeve, inner flange, ring member and the pipe in Figure 1 with the gap closed; Figure 3, which shows the sleeve and inner flange in Figure 1; and Figure 4, which shows the ring member in Figure 1.

[0034] In the explanation of Figure 1, the X, Y, and Z directions are mutually orthogonal. Specifically, when viewing the front of the pipe embedding support structure from the front, the X direction is the left-right direction, the Y direction is the up-down direction, and the Z direction is the front-back direction. Furthermore, in the X direction, the +X side is the right side and the -X side is the left side; in the Y direction, the +Y side is the upper side and the -Y side is the lower side; and in the Z direction, the +Z side is the front side and the -Z side is the rear side. This is the same in Figures 2 to 6, which represent embodiments of the present invention.

[0035] [Embodiment of pipe embedding support structure] Figure 1 shows a method for embedding and fixing the floor-passing portion of a pipe 18 that penetrates vertically through the floor of a multi-story building. The structure, configuration, and type are arbitrary, but as an example, it consists of a sleeve 10, a ring member 12, a floor base 14, a through hole 16, a pipe 18, and a concrete slab 20.

[0036] Here, in Figure 5(A), when the inner diameter of the sleeve 10 is D1, the outer diameter of the ring member 12 is D2, the inner diameter of the inner flange 28 is D3, the inner diameter of the ring member 12 is D4, and the outer diameter of the pipe 18 is D5, the relationship D1 > D2 > D3 > D4 > D5 exists.

[0037] (Ring component) As shown in Figure 2, the piping 18 has a ring member 12 inserted into it, and is fixed in the gap between the sleeve 10, inner flange 28, ring member 12, and piping 18 with building material embedded fixing part 22, which includes rock wool 2201 and mortar 2202.

[0038] Furthermore, the sleeve 10 is fixed in the floor base 14, which is formed by the deck plates and the like that make up the bottom of the floor, at a position through which the pipe 18 passes, and is embedded in the surrounding concrete slab 20 to form a pipe penetration route. Its structure, configuration, and type are arbitrary, but as an example, it has the structure shown in Figure 3.

[0039] (sleeve) Figure 3(A) shows a plan view of the sleeve, Figure 3(B) shows the external appearance of the inner flange, Figure 3(C) shows a longitudinal section of Figure 3(A) viewed from XX, and Figure 3(D) shows a longitudinal section of Figure 3(A) viewed from YY.

[0040] The sleeve 10 has multiple mounting pieces 26 fixed to the outer circumference of the opening at the bottom of the cylindrical body 24. The mounting pieces 26 are L-shaped sheet metal members that are fixed to the outer circumference of the cylindrical body 24 at three positions, for example, at equal angles of 120° from the center, by spot welding or the like, and through holes are formed in the mounting pieces 26.

[0041] (Inner guard) Furthermore, a plurality of bent pieces 2801, whose inner diameter is approximately equal to the outer diameter of the cylindrical body 24, are fixed to the outer circumference of the opening at the bottom of the cylindrical body 24. For example, the inner flange 28 is formed by L-shaped bent pieces 2801, which are bent, for example by a press, at equal angles of 120° from the center of the outer circumference of the cylindrical body 24, and is fixed at three locations between the mounting pieces 26 on the outer circumference by spot welding or the like.

[0042] Furthermore, the bent piece 2801 of the inner flange 28 is fixed to the outer circumference of the cylindrical body 24 so as not to obstruct the insertion (fitting) of the ring member 12 into the pipe 18.

[0043] The length of the inner flange 28 protruding toward the center of the cylindrical body 24 is arbitrary, but since it is intended to lock the ring member 12 of the pipe 18 inserted into the cylindrical body 24 and prevent it from coming loose, it will be, for example, about 10 millimeters or less. In other words, the inner diameter of the inner flange 28 will be about 20 millimeters smaller than the inner diameter of the sleeve 10 (or the outer diameter of the inner flange 28).

[0044] (Ring component) The ring member 12 is inserted into the sleeve 10 and locked to the inner flange 28, sealing the gap between the sleeve 10 and the pipe 18 as shown in Figure 1. Its structure, configuration, and type are arbitrary, but one example is the structure shown in Figure 4.

[0045] Figures 4(A) to 4(C) show ring members 12 with the same outer diameter. The diameter of the through-hole 30 is arbitrary, but it differs depending on the outer diameter of the pipe 18 to which it is placed. For example, if the outer diameter of the pipe 18 is 80φ, 100φ, or 120φ, the diameter of the through-hole 30 is set to the corresponding 80φ, 100φ, or 120φ of the pipe 18, plus a predetermined margin, for example, 0.5 to 1.0 millimeters. This margin allows for a loose fit of the ring member 12 to the pipe.

[0046] Furthermore, the outer diameter of the ring member 12 is available in multiple sizes depending on the inner diameter of the sleeve 10 used, and is the inner diameter of the sleeve 10 minus a predetermined allowance, for example, 0.5 to 1.0 millimeters. This allowance in the outer diameter allows for a loose fit of the ring member 12 inside the sleeve 10.

[0047] (Floor subflooring, floor slabs) Next, the bent piece 2801 of the inner flange 28 is spot-welded to the sleeve 10, and after the sleeve 10 is installed and the concrete slab 20 is laid, a worker inserts the pipe 18 into the sleeve 10 and then inserts the ring member 12 into the pipe 18 for fastening, as shown in Figure 5.

[0048] Here, in Figure 5(A), when the inner diameter of the sleeve 10 is D1, the outer diameter of the ring member 12 is D2, the inner diameter of the ring member 12 is D3, the inner diameter of the ring member 12 is D4, and the outer diameter of the pipe 18 is D5, the relationship D1>D2>D3>D4>D5 exists.

[0049] Figure 5(A) shows the pipe 18 and ring member 12 before they are inserted into the sleeve 10, and Figure 5(B) shows the pipe 18 and ring member 12 after they have been inserted into the sleeve 10.

[0050] The subfloor 14 is a component that forms the bottom of the floor. Its structure, composition, and type are arbitrary, but for example, it is constructed by laying down deck plates or the like. At the positions where the pipes 18 pass through the subfloor 14 from above and below, the sleeves 10 are positioned by fixing mounting pieces 26 to the subfloor 14 with self-drilling screws 32.

[0051] A self-drilling screw is a screw that has a drill-shaped tip with threads cut behind it, allowing it to be driven directly into a metal plate without pre-drilling a pilot hole. Self-drilling screws are also called piercing screws, but this term is generally used to refer to the "self-drilling screw" type of small screw.

[0052] In this state, a concrete slab 20 is formed as a floor slab by pouring concrete, for example, as a predetermined building material, onto the subfloor 14. The sleeve 10 is embedded in the concrete slab 20, and a pipe penetration space is formed within the sleeve 10.

[0053] (Through-hole) The through-hole 16 in the subfloor 14 is a hole through which the pipe 18 passes. It is formed by cutting or drilling in the part of the subfloor 14 located at the bottom of the sleeve 10 embedded in the concrete slab 20, and its diameter is such that the pipe 18 can pass through the sleeve 10.

[0054] (Embedded fixing part for building materials) The building material embedded fixing part 22 is formed by passing the pipe 18 through the sleeve 10, and positioning the ring member 12 fitted onto the pipe 18 at the bottom so that it engages with the inner flange 28 of the sleeve 10 when passing the pipe 18 through the sleeve 10, thereby sealing the annular gap between the pipe 18 and the sleeve 106, and then injecting mortar 2202 after filling it with a predetermined building material, such as rock wool 2201, and allowing it to harden.

[0055] [Modified versions of this invention] Modified examples of the pipe embedding support structure according to the present invention will now be described. The embodiments of the pipe embedding support structure according to the present invention are not limited to the embodiments described above, but include the following modified examples.

[0056] In the embodiment of the pipe embedding support structure according to the present invention, the bent piece 2801 of the inner flange 28 is fixed to the outside of the cylindrical body 24 of the sleeve 10 by spot welding, but it may also be spot-welded to a location that avoids the location where the mounting piece 26 of the inner cylindrical body 24 is welded.

[0057] Furthermore, although the mounting piece 26 and the inner flange 28 are separate components, they may be combined into a single component and fixed to the end face of the opening at the bottom of the cylindrical body 24 of the sleeve 10 by spot welding or the like.

[0058] (others) Furthermore, this invention includes appropriate modifications that do not impair its purpose and advantages, and is not limited by the numerical values ​​shown in the above embodiments. [Explanation of Symbols]

[0059] 10: Sleeves 12: Ring component 14: Subfloor 16: Through-hole (through-hole in the subfloor) 18: Piping 20: Concrete slab 22: Embedded fixing part for building materials 2201: Rock wool 2202: Mortar 24: Cylindrical body 26, 34: Mounting piece 28: Inner guard 2801: Folded piece 30: Through-hole (through-hole in ring component) 32: Self-drilling screws

Claims

1. A pipe embedding support structure is provided to seal the lower side of the gap when a sleeve is positioned above a through-hole formed in the subfloor that divides a building in the vertical direction, and a predetermined building material is injected into the gap between the through-hole and the sleeve and the pipe that penetrates the sleeve to fix the pipe to the subfloor, An inner flange fixed to the end face of the sleeve on the through-hole side, A ring member having an outer diameter smaller than the inner diameter of the sleeve and an inner diameter corresponding to the outer diameter of the pipe, which is inserted into the pipe and abuts against the sleeve side of the inner flange to seal the gap between the sleeve and the pipe, A pipe embedding support structure characterized by having the following features.

2. A pipe embedding support structure according to claim 1, When the inner diameter of the sleeve is D1, the outer diameter of the ring member is D2, the inner diameter of the inner flange is D3, the inner diameter of the ring member is D4, and the outer diameter of the pipe is D5, D1>D2>D3>D4>D5 A pipe embedding support structure characterized by having the following relationship.

3. A pipe embedding support structure according to claim 1, The pipe embedding support structure is characterized in that the inner flange has an inner diameter that is about 20 millimeters smaller than the inner diameter of the sleeve.

4. A pipe embedding support structure according to claim 1, The aforementioned ring member is a pipe embedding support structure characterized in that its outer diameter is several millimeters smaller than the inner diameter of the sleeve.

5. A pipe embedding support structure according to claim 1, The pipe embedding support structure is characterized in that the sleeve is fixed above the floor base in the installed state.

6. A pipe embedding support structure according to claim 1, The aforementioned sleeve is fixed below the floor subfloor in its installed state, and this is a pipe embedding support structure.

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