Multi-piece integrated CD connector for insulation board of slab and installation method of outlet box using same

Abstract

The present invention relates to a means for installing an outlet box for connecting CD conduit embedded in a concrete slab on an insulation plate attached to the bottom surface of the slab, wherein the means comprises a connector body embedded in an insulation plate attached to the bottom surface of the slab and a plurality of CD connecting pipes inserted into the interior of the connector body, wherein the CD connecting pipes are composed of an internal portion located inside the connector body and a protruding portion protruding from the upper surface of the connector body and embedded in the slab.

Description

Technology Field

[0001] The present invention relates to a technology for improving constructability while minimizing damage to an insulation plate when installing an outlet box for connecting a CD (Combine Duct) conduit embedded in a concrete slab on an insulation plate attached to the bottom surface of the slab. Background Technology

[0003] When forming an insulation layer on the underside of a slab to prevent indoor heat loss of a building, the CD conduit embedded in the slab penetrates the insulation layer and is connected to each wire supplying electricity to the interior of the building through an outlet box.

[0004] There are two methods for forming an insulation layer on the bottom surface of a slab: one involves installing floor formwork, pouring and curing concrete for the slab, and then attaching an insulation plate to the bottom surface of the pre-constructed slab; the other involves laying an insulation plate on the upper surface of the floor formwork and then pouring and curing concrete for the slab over it so that the slab is constructed with the insulation plate attached integrally.

[0005] In the former case, not only is it difficult to firmly attach the insulation plate to the slab, but through holes must also be formed in the insulation plate to fit the electrical boxes or CD conduits embedded in the slab; however, since it is difficult to accurately determine the location, excessive through holes are formed, leading to the problem of condensation occurring around the electrical boxes or CD conduits.

[0006] Therefore, the latter method, in which the insulation board is installed integrally with the slab, is typically used, and in this case, the installation of CD conduit on the insulation board has been carried out in the following manner.

[0007] An outlet box is fixed to the floor formwork for the slab with the opening facing downward, and an insulation plate is laid on the upper surface of the floor formwork. At this time, the insulation plate forms a hole for installing the outlet box that penetrates beyond the flat size of the outlet box, so that the outlet box is inserted into the insulation plate. The end of a CD conduit (140) embedded in the slab concrete is inserted into the outlet box.

[0008] Once the insertion of the outlet box into the hole for installing the outlet box and the installation of the floor formwork are completed, and the reinforcement for the upper part of the insulation plate is completed, as shown in FIG. 1, flame-retardant urethane is sprayed into the hole for installing the outlet box to fill a portion of it, and then the remaining portion of the hole for installing the outlet box is filled while pouring slab concrete to complete the construction of the slab.

[0009] However, the installation of an outlet box according to the aforementioned conventional technology has the following problems.

[0010] First, the formation of an insulation layer for the holes for installing outlet boxes, which must be filled afterward, is possible by a spray method. However, according to the Building Act, insulation materials used in all construction projects are required to be of at least semi-noncombustible quality; yet, spray application of semi-noncombustible materials is limited to large areas such as girders or walls, and there is no equipment or insulation material of at least semi-noncombustible quality available to fill very small holes by spray method, with only flame-retardant urethane existing. Therefore, as described above, the use of flame-retardant urethane inside the holes for installing outlet boxes not only has the potential to violate regulations, but the generation of toxic gases due to combustion is not entirely eliminated.

[0011] Second, since the size of the hole for installing the outlet box that penetrates the insulation plate is not small, filling the entire interior of the hole with flame-retardant urethane would increase construction costs; therefore, on-site, this is minimized and the remainder is filled with concrete. Consequently, insulation performance deteriorates around the sprayed urethane area, causing condensation phenomena such as water droplets forming around the outlet box.

[0013] Due to these issues, recently, holes are formed in the insulation plate using a screw-type electric drill, and CD conduit is inserted through the holes up to the slab formwork for wiring. Afterward, the slab is constructed by placing rebar and pouring concrete. Once the concrete has cured, the floor formwork is removed, and the insulation plate at the location of the CD conduit is excavated to locate the conduit. Finally, the conduit is connected to an outlet box using a CD coupling.

[0014] However, these recent methods cause severe damage to the insulation boards, requiring a lot of time and money to remove and repair the insulation in this area, and additionally, as shown in Fig. 2, the outlet box is not fixed and remains in an unstable state, hanging from the ceiling and swaying. Prior art literature

[0016] (Patent Document 0001) KR 10-1386405 B1 The problem to be solved

[0017] The present invention aims to solve the aforementioned problems of the prior art by providing a multi-hole integrated CD connector and a method for installing an outlet box using the same, which can improve construction quality and shorten work time by facilitating the installation of an outlet box, in addition to minimizing damage to the insulation plate during the installation process so as to prevent condensation caused by reduced insulation performance around the outlet box, when installing an outlet box on an insulation plate attached to the bottom surface of a slab to be connected to a CD conduit embedded in the slab. means of solving the problem

[0019] A multi-hole integrated CD connector of the most preferred embodiment of the present invention for solving the above-mentioned problem comprises a connector body embedded in an insulating plate attached to the bottom surface of a slab and a plurality of CD connecting tubes inserted into the interior of the connector body, wherein the CD connecting tubes consist of an internal portion located inside the connector body and a protruding portion protruding from the upper surface of the connector body and embedded in the slab.

[0020] The connector body of the most preferred embodiment is formed in the shape of a solid circular rod, with the remaining cross-section excluding the insertion hole formed inside so that a plurality of CD connector tubes can be inserted integrally. At this time, a fastening hole may be provided in the solid part.

[0021] In another embodiment of the present invention, a box fixing socket in the shape of a circular tubular body is further included to secure an outlet box and is fastened to the lower part of the connector body.

[0022] The box fixing socket of the most preferred embodiment is composed of a fastening insertion part and a locking part, wherein the fastening insertion part passes through an inlet opening provided on the top plate of the outlet box and is coupled to the connector body by a screw fastening method, and the locking part is configured such that its cross-section is larger than the inlet opening and is caught on the bottom surface of the top plate of the outlet box when the fastening insertion part is coupled to the connector body by a screw fastening method. At this time, an insertion blade may be provided at the tip of the fastening insertion part, wherein a pointed cross-section is formed such that the outer surface is inclined upward toward the inner surface.

[0023] The installation of the outlet box of the most preferred embodiment of the present invention is carried out sequentially by the following steps: a) laying an insulating plate on the upper surface of the floor formwork and forming an installation hole by perforating the insulating plate; b) inserting and installing the multi-hole integrated CD connector described above into the installation hole; c) installing upper and lower reinforcing bars for the slab on the upper surface of the insulating plate and installing a CD conduit for slab embedding by connecting it to the protruding part of the CD connecting pipe of the multi-hole integrated CD connector; d) pouring and curing concrete for the slab and then dismantling the floor formwork to expose the lower surface of the connector body of the multi-hole integrated CD connector; and e) fixing the outlet box to the exposed lower surface of the connector of the multi-hole integrated CD connector on the lower surface of the insulating plate.

[0024] At this time, the outlet box fixing in step e) above may be achieved by screwing a box fixing socket to the outer surface of the connector body, or by fixing the connector body and the outlet box together with a screw or fastening bolt. Effects of the invention

[0026] The multi-hole integrated CD connector of the present invention is injection-molded from a semi-noncombustible material and inserted into an insulation plate made of a semi-noncombustible material, thereby eliminating the need for work such as spraying at the site, enabling rapid construction, and also allowing for the maintenance of the semi-noncombustible performance of the insulation plate.

[0027] In addition, the multi-hole integrated CD connector of the present invention has a protrusion of the CD connecting tube installed inside it that is embedded and fixed in the slab to serve as an anchoring function, thereby enabling the outlet box installed therein to be installed firmly and stably, and in particular, damage to the insulation plate can be minimized, and since high airtightness is maintained between the insulation plate and the multi-hole integrated CD connector by the fastening insertion part of the box fixing socket or the airtight pad attached to the top plate of the outlet box, there is no possibility of condensation occurring around them. Brief explanation of the drawing

[0029] FIG. 1 is a cross-sectional view of an outlet box installed on a slab bottom insulation plate according to the prior art. Figure 2 is a photograph of the construction state according to the prior art above. FIG. 3 is a perspective view of a multi-hole integrated CD connector according to one embodiment of the present invention. FIG. 4 is a perspective view of an embodiment of the connector body among the above-described multi-tool integrated CD connector. Figure 5 is a cross-sectional view of part AA of Figure 3. FIG. 6 is a perspective view of an outlet box fixed to the multi-tool integrated CD connector. FIG. 7 is a perspective view of an embodiment of a box fixing socket connected to the connector body. FIG. 8 is an explanatory diagram regarding the step of forming an installation hole of an insulation plate in the outlet box installation method of the present invention. FIG. 9 is an explanatory diagram regarding the installation step of a multi-channel integrated CD connector in the outlet box installation method of the present invention. FIG. 10 is an explanatory diagram of the reinforcing bar placement and CD conduit installation steps in the outlet box installation method of the present invention. FIG. 11 is an explanatory diagram of the step of exposing the bottom surface of the connector body in the outlet box installation method of the present invention. FIG. 12 is an explanatory diagram regarding an embodiment of the outlet box installation step in the outlet box installation method of the present invention. FIG. 13 is an explanatory diagram regarding another embodiment of the outlet box installation step in the outlet box installation method of the present invention. Specific details for implementing the invention

[0030] Hereinafter, the present invention will be described in detail based on the most preferred embodiment with reference to the attached drawings. However, in describing the present invention, if specifically describing a known configuration would obscure or obscure the technical concept of the present invention, the description of the known configuration will be omitted.

[0032] FIG. 3 shows the overall appearance of an embodiment of the multi-hole integrated CD connector (100) of the present invention, FIG. 4 shows the connector body (110) described later among the multi-hole integrated CD connector (100), and FIG. 5 shows a cross-sectional view of the AA portion of FIG. 3.

[0034] The multi-unit integrated CD connector (100) of the present invention is fixedly installed on an insulation plate (300) made of semi-noncombustible material attached to the bottom surface of a slab (400) as described above, thereby minimizing damage to the insulation plate (300), and functions to connect a plurality of CD conduits (140) embedded in the slab (400) to an outlet box (200) described later.

[0035] The multi-hole integrated CD connector of the present invention is composed of a connector body (110) and a CD connecting tube (120), as shown in FIGS. 3 and 4 above.

[0036] The connector body (110) is embedded in the insulation plate (300) to protect the CD connector (120) located inside it, and also clearly defines the removal range of the insulation plate (300), thereby preventing the insulation plate (300) from being extensively damaged to unnecessary parts during the process of positioning the CD connector (120) on the insulation plate (300), and making it very easy to install the multi-unit integrated CD connector (100) of the present invention.

[0037] In addition, the connector body (110) also functions as a support bracket that allows the outlet box (200) to be stably fixed to the bottom surface of the insulation plate (300).

[0038] The most preferred embodiment of the connector body (110) is configured such that, as shown in FIGS. 4 and 5, it has an insertion hole (111) inside, and the cross section excluding the insertion hole (111) has the shape of a solid circular rod.

[0039] The connector body (110) in the shape of a circular rod, equipped with an insertion hole (111) as described above, can be manufactured by injection molding rigid polyvinyl chloride, which is a semi-noncombustible material, as well as having excellent impact resistance, corrosion resistance, and durability. Therefore, the spraying work required in the prior art is not necessary, and there is absolutely no room for the irregular use of flame-retardant urethane foam that is not a semi-noncombustible material.

[0040] The CD connection tube (120) inserted into the interior of the connector body (110) is provided in correspondence with the number of CD wire tubes (140) connected thereto, and these multiple tubes are bundled together as a single unit by the insertion hole (111).

[0041] Each of these multiple CD connectors (120) is divided into an internal part (120A) located inside the connector body (110) and a protruding part (120B) that protrudes from the upper surface of the connector body (110) and is embedded in the slab (400).

[0042] The protrusion (120B) embedded in the slab (400) functions as an anchoring function for the connector body (110), thereby enabling the multi-hole integrated CD connector (100) of the present invention to maintain its position stably without detaching from the insulation plate (300).

[0043] In order to enable the above-mentioned anchoring function to be performed more efficiently and to facilitate connection with the CD conduit (140), it is preferable that each CD connecting pipe (120) of the protrusion (120B) be embedded in the slab (400) in a shape that expands radially toward one another, as shown in FIGS. 3 and 5.

[0044] FIG. 6 illustrates an embodiment of an outlet box (200) fixed to a multi-purpose integrated CD connector (100) of the present invention.

[0045] The above outlet box (200) is a wiring connection box that allows each wire introduced through the CD conduit (140) to be connected to the wires installed for the operation of each electrical appliance inside the building. As shown in FIG. 6, it is composed of a box-shaped body (210) that forms an opening (241) at the bottom, consisting of a top plate (211) equipped with an inlet opening (221) and a side plate (212) bent downward at the end of each top plate (211), and a plurality of outlets or outlet pipes (230) protruding outwardly provided on the side plate (212).

[0046] Multiple wires drawn from the CD connection tube (120) of the multi-unit integrated CD connector (100) are drawn into the outlet box (200) through the inlet opening (221), then branched out and connected to the indoor wires through the outlet or outlet tube (230).

[0047] The outlet box (200) for the multi-unit integrated CD connector (100) can be secured in various ways.

[0048] One embodiment regarding this is, as shown in FIG. 13, that the connector body (110) and the outlet box (200) are secured together by a piece (252) or a fastening bolt. To do this, a fastening hole (p) may be provided on the bottom surface of the connector body (110) and on the top plate (211) of the outlet box (200).

[0049] In another embodiment regarding the fixing of the outlet box (200), the multi-hole integrated CD connector (100) further includes a box fixing socket (130) that is fastened to the lower part of the connector body (110).

[0050] The above box fixing socket (130) is configured in a circular tubular shape to grip and fix the outlet box (200) and is connected to the lower part of the connector body (110). Preferably, it is made of a material of rigid polyvinyl chloride, which is a semi-noncombustible material, just like the connector body (110).

[0051] FIG. 7 illustrates an embodiment of such a box fixing socket (130).

[0052] The box fixing socket (130) exemplified in FIG. 7 consists of a fastening insertion part (131) and a locking part (132).

[0053] The fastening insertion part (131) is a part that is inserted between the insulation plate (300) and the outer surface of the connector body (110) while being fastened to the connector body (110).

[0054] The catch portion (132) is a part that grips the top plate (211) of the outlet box (200) to fix the outlet box (200) to the lower surface of the connector body (110), and is configured with a cross-section larger than the inlet opening (221) provided on the top plate (211) of the outlet box (200).

[0055] Accordingly, when the fastening insertion part (131) of the box fixing socket (130) is passed through the inlet opening (221) from the opening (241) located at the bottom of the outlet box (200) and then fastened to the connector body (110), the locking part (132) is caught on the bottom surface of the top plate (211) of the outlet box (200) and moves upward together to be fixed to the bottom surface of the connector body (110).

[0056] At this time, the above-mentioned catch portion (132) is exposed toward the opening portion (241) of the outlet box (200), and can also function as a gripping means for fastening the box fixing socket (130).

[0057] For example, if the cross-sectional shape of the above-mentioned locking part (132) is formed as a polygon, the worker can perform the above-mentioned fastening work more easily by hand without the need for separate tools.

[0058] It is preferable that the connection between the connector body (110) and the box fixing socket (130) be made by a screw connection method. To this end, a male screw portion (112) may be provided on the outer surface of the lower part of the connector body (110), and a female screw portion (131b) may be provided on the upper part of the inner surface of the connection insertion part (131) of the box fixing socket (130).

[0059] Accordingly, the box fixing socket (130) moves upward as it is screw-fastened to the outside of the connector body (110), which allows the fastening insertion part (131) to perfectly eliminate even the minute gap that may occur between the insulation plate (300) and the connector body (110), thereby ensuring more perfect continuity of the insulation structure.

[0060] In another embodiment of the aforementioned fastening insertion part (131), an insertion blade (131a) is provided at its tip. The insertion blade (131a) prevents the insulation plate from being damaged by the tip and allows the box fixing socket (130) to move smoothly upward between the insulation plate (300) and the outer surface of the connector body (110).

[0061] At this time, the insertion blade (131a) is formed with an outer surface that is inclined upward toward the inner surface, so that the above-described fastening is achieved with the sharp outer surface in close contact with the outer surface of the connector body (110).

[0062] Up to this point, the shape and structure of the multi-hole integrated CD connector (100) of the present invention have been described. Below, a method for installing an outlet box (200) for drawing out wires on an insulation plate (300) attached to the bottom surface of a slab (400) using the same will be described.

[0063] FIGS. 8 to 13 illustrate each step of the installation process of an outlet box (200) according to the present invention, which is performed in a manner that sequentially proceeds as follows: a) a step of forming an installation hole (H) of an insulation plate (300), b) a step of installing a multi-unit integrated CD connector (100), c) a step of reinforcing bar placement and CD conduit (140) installation, d) a step of exposing the bottom surface of the connector body (110), and e) a step of installing the outlet box (200).

[0064] The specific details of each of these steps are as follows.

[0066] a) Step of forming an installation hole (H) of the insulation plate (300) (Fig. 8);

[0067] An insulation plate (300) is laid on the upper surface of the floor formwork (500) for constructing the slab (400), and an installation hole (H) is formed by perforating the insulation plate (300) at the location where the outlet box (200) is to be installed, so as to penetrate it. The inner diameter of the installation hole (H) must be formed to be the same as the outer diameter of the connector body (110) of the multi-hole integrated CD connector (100) to be inserted therein.

[0069] b) Installation step of the multi-tool integrated CD connector (100) (Fig. 9)

[0070] The above-described multi-tool integrated CD connector (100) is inserted and installed in the installation hole (H) so that the lower surface of the connector body (110) contacts the upper surface of the floor formwork (500).

[0071] At this time, it is desirable that the length of the connector body (110) of the multi-hole integrated CD connector (100) matches the thickness of the insulation plate (300), so that a reduction in the thickness of the concrete (C) covering due to encroachment on the slab (400) or a reduction in the thickness of the insulation due to the intrusion of concrete (C) into the installation hole (H) does not occur.

[0072] When the installation of the multi-piece integrated CD connector on the insulation plate (300) is completed, the protrusion (120B) of the CD connector (120) is exposed to the upper part of the insulation plate (300) and is embedded therein when the concrete (C) for the slab is poured as described above, thereby serving as an anchoring function for the connector body (110).

[0073] In addition, the upper end of the protrusion (120B) of the CD connecting pipe (120) is connected to the CD conduit (140) to be located between the upper reinforcement (420) and the lower reinforcement (410) of the slab (400). By positioning it below the lower reinforcement (410) of the slab (400) to be reinforced in the future, it is desirable to ensure that no interference occurs that hinders the reinforcement work, and that the degree to which the CD conduit (140) must be bent for this connection is gentle.

[0075] c) Step of reinforcing bar placement and CD conduit (140) installation (Fig. 10);

[0076] When the installation of the multi-unit integrated CD connector (100) is completed, the reinforcement work for the upper reinforcement (420) and lower reinforcement (410) for the slab is performed on the upper surface of the insulation plate (300), and the placement work for the CD conduit (140) to be embedded in the slab (400) is performed.

[0077] It is desirable to position the CD conduit (140) between the upper reinforcing bar (420) and the lower reinforcing bar (410) so that the thickness of the concrete (C) covering at the bottom of the CD conduit (140) is not reduced.

[0078] When the work of reinforcing bar placement and CD conduit (140) placement is completed, the end of the CD conduit (140) is connected to the protrusion (120B) of the CD connecting pipe (120) and locked with a fixed end cap (121) so that they are not separated when pouring concrete (C) for the slab.

[0080] d) Step of exposing the bottom surface of the connector body (110) (Fig. 11);

[0081] When work on the upper part of the insulation plate (300), such as reinforcing bar placement and installation of CD conduit (140), is completed, concrete (C) is poured and cured, and then the floor formwork (500) is removed so that the lower surface of the connector body (110) of the multi-tool integrated CD connector (100) is exposed.

[0083] e) Installation step of the outlet box (200) (Figs. 12, 13)

[0084] An outlet box (200) is fixed to the bottom surface of the connector body (110) of the exposed multi-tool integrated CD connector (100) on the bottom surface of the insulation plate (300).

[0085] The above outlet box (200) is fixed in the following manner as described above.

[0086] FIG. 12 illustrates a method of fixing an outlet box (200) using a box fixing socket (130).

[0087] When the fastening insertion part (131) of the box fixing socket (130) is passed through the inlet opening (221) at the opening (241) located at the bottom of the outlet box (200), and the bottom surface of the top plate (211) of the outlet box (200) is caught by the catch part (132) of the box fixing socket (130), the box fixing socket (130) is coupled to the connector body (110) by screw fastening, and the outlet box (200) moves upward together with the box fixing socket (130) and is firmly fixed to the multi-hole integrated CD connector (100).

[0088] FIG. 13 illustrates a method of fixing the connector body (110) and the outlet box (200) together with a piece (252) or a fastening bolt.

[0089] The fastening of the piece (252) is to be performed in the solid part outside the insertion opening (111) of the connector body (110), and as shown in FIG. 13 (a), a fastening surface (211a) having a corresponding fastening hole (p) must be provided on the top plate (211) of the outlet box (200).

[0090] In this step, by attaching a sealing pad (251) to the upper surface of the top plate (211) of the outlet box (200) in advance and then fixing the outlet box (200) to the multi-tool integrated CD connector (100) using the fixing method described above, it is possible to further prevent a decrease in thermal insulation performance in that part due to the formation of the installation hole (H).

[0092] Although the present invention has been described in detail above with reference to specific embodiments, the above embodiments are merely examples to facilitate understanding of the invention, and it is obvious that those skilled in the art can implement various modifications within the scope of the technical concept of the present invention. Accordingly, such modifications shall be deemed to fall within the scope of the rights of the present invention as described in the claims. Explanation of the symbols

[0094] 100; Multi-tool integrated CD connector 110; Connector body 111; Insertion port 112; Male screw part 120; CD connector 120A; internal part 120B; Protrusion 121; Fixed end cap 130: Box fixing socket 131; Fastening insertion part 131a; Inserting blade 131b; Female thread section 132; catch 140; CD conduit 200; Outlet box 210; Body 211; Top plate 211a; Fastening surface 212; Side plate 221; Inlet opening 230; withdrawal tube 251; airtight pad 252; Pieces 300; Insulation board 400; Slab 410; Bottom reinforcement 420; Top reinforcement 500; Floor formwork

Claims

Claim 1 A plurality of CD conduit pipes (140) that are fixedly installed on an insulation plate (300) attached to the bottom surface of a slab (400) and embedded in the slab (400) are connected to an outlet box (200). The connector body (110) embedded in the insulation plate (300), a plurality of CD connecting pipes (120) inserted into the interior of the connector body (110), and a circular tubular box fixing socket (130) that is fastened to the lower end of the connector body (110) to fix the outlet box (200) are composed of an internal part (120A) located inside the connector body (110) and a protruding part (120B) that protrudes from the upper surface of the connector body (110) and is embedded in the slab (400). The box fixing socket (130) is composed of a fastening insertion part (131) and A multi-hole integrated CD connector characterized by being composed of a locking part (132), wherein the fastening insertion part (131) passes through an inlet opening (221) provided on the top plate (211) of the outlet box (200) and is coupled to the connector body (110) by a screw fastening method, and wherein the cross-section of the locking part (132) is configured to be larger than that of the inlet opening (221) so that when the fastening insertion part (131) is coupled to the connector body (110) by a screw fastening method, it is caught on the bottom surface of the top plate (211) of the outlet box (200). Claim 2 A multi-hole integrated CD connector according to claim 1, wherein the connector body (110) is characterized in that the remaining cross-section, excluding the insertion hole (111) formed inside so that a plurality of CD connection tubes (120) can be inserted integrally, is formed in the shape of a solid circular rod. Claim 3 delete Claim 4 delete Claim 5 A multi-hole integrated CD connector characterized in that, in claim 1, a male screw portion (112) is provided on the outer surface of the lower part of the connector body (110), and a female screw portion (131b) is provided on the upper part of the inner surface of the fastening insertion part (131), so that the box fixing socket (130) is coupled to the outside of the connector body (110) by a screw fastening method. Claim 6 A multi-hole integrated CD connector according to claim 1, wherein an insertion blade (131a) is provided at the tip of the fastening insertion part (131), and the insertion blade (131a) is configured in a shape with a pointed cross-section in which the outer surface is inclined upward toward the inner surface. Claim 7 A method for installing an outlet box (200) for drawing out wires on an insulation plate (300) attached to the bottom surface of a slab (400), comprising: a) laying an insulation plate (300) on the upper surface of a floor formwork and forming an installation hole (H) by perforating the insulation plate (300); b) inserting and installing a multi-hole integrated CD connector (100) according to any one of claims 1, 2, 5, and 6 into the installation hole (H); c) installing upper reinforcing bars (420) and lower reinforcing bars (410) for the slab on the upper surface of the insulation plate (300), and installing a CD wire conduit (140) for embedding in the slab (400) by connecting to the protrusion (120B) of the CD connection pipe (120) of the multi-hole integrated CD connector (100); d) pouring and curing concrete (C) for the slab, and then dismantling the floor formwork (500). A method for installing an outlet box (200) characterized by sequentially proceeding with the following steps: a step of exposing the bottom surface of the connector body (110) of the multi-channel integrated CD connector (100); e) a step of fixing the outlet box (200) to the bottom surface of the connector of the multi-channel integrated CD connector (100) exposed on the bottom surface of the insulation plate (300). Claim 8 A method for installing an outlet box (200) according to claim 7, characterized in that the length of the connector body (110) of the multi-hole integrated CD connector (100) installed in step b) above is configured to match the thickness of the insulation plate (300). Claim 9 In claim 7, the method of installing an outlet box (200) is characterized in that step b) involves installing a multi-hole integrated CD connector (100) such that the upper end of the protrusion (120B) of the CD connector (120) is positioned below the lower reinforcing bar (410) installed in step c). Claim 10 A method for installing an outlet box (200) according to claim 7, wherein the fixing of the outlet box (200) in step e) above is achieved by screwing a box fixing socket (130) to the outer surface of the connector body (110). Claim 11 A method for installing an outlet box (200) according to claim 7, wherein the outlet box (200) in step e) above is fixed by a method of fixing the connector body (110) and the outlet box (200) with a piece (252) or a fastening bolt.

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