Construction Method of Opening Registration using Auxiliary Support for Wiring Devices

Abstract

The present invention relates to a construction method for aligning openings using an auxiliary bracket for mounting wiring devices, designed to fundamentally resolve the mismatch between the embedded box and the wall hole location in a double (2-ply) gypsum board construction environment and to firmly fix the wiring device to an internal auxiliary bracket via a metal-to-metal connection rather than to the gypsum board. The method comprises: a step of embedded box installation and wall formation in which an embedded box is installed on reinforcing bars and concrete is poured and cured to form a wall; a step of primary gypsum board installation in which a primary gypsum board is attached to the front surface of the cured wall with the opening left unprocessed; and a step of auxiliary bracket placement and primary opening formation in which the location of the embedded box is marked on the surface of the primary gypsum board, an auxiliary bracket for mounting wiring devices is placed, and the primary gypsum board is cut using the inner contour of the said auxiliary bracket as a guide. The method includes: a second gypsum board lamination and alignment cutting step in which a second gypsum board is additionally laminated on the front surface of the first gypsum board and an opening is formed again with the same contour as the opening of the first gypsum board to secure interlayer alignment; and a wiring device fastening and fixing step in which a buried box or wiring device is inserted into the formed opening and a piece is fastened via an auxiliary support for the wiring device to structurally fix it.

Description

Technology Field

[0001] The present invention relates to a construction method for aligning openings using an auxiliary bracket for aligning wiring devices, and more specifically, to a construction method for aligning openings using an auxiliary bracket for aligning wiring devices designed to fundamentally resolve the mismatch between the embedded box and the wall hole location in a double (2-ply) gypsum board construction environment, and to firmly fix the wiring device to the internal auxiliary bracket with a metal-to-metal connection instead of the gypsum board. Background Technology

[0003] In general, for interior wall construction in apartments or commercial buildings, a dry construction method is widely used in which insulation is installed on reinforced concrete walls, and then gypsum board is attached in a single layer (1-PLY) or double layer (2-PLY) as a finishing base. Electrical wiring work proceeds in conjunction with this wall formation process, and before pouring the concrete, embedded boxes (switch boxes or outlet boxes) are fixed to the rebar and embedded. After the concrete has cured, gypsum board is attached to the entire surface of the wall; at this stage, the worker must locate the position of the embedded boxes that are not visible and cut (perforate) the gypsum board in that section.

[0004] Conventionally, methods were used to pre-record the coordinates of the buried box using a tape measure or to locate the position by placing a magnet inside the box and using a magnetic sensor. However, in actual construction sites, the buried box frequently shifted to the left or right or tilted due to lateral pressure during concrete pouring, often resulting in discrepancies between the pre-recorded coordinates and the actual location. Furthermore, since the magnetic detection method only indicates the approximate center point and does not provide the precise boundary line of the box, the worker had to rely on intuition when drilling. Consequently, defects occurred where the drilled hole was too small compared to the buried box, requiring further trimming, or conversely, too large, causing the screw fastening point (commonly known as the 'ear') of the wiring device to be suspended in mid-air. In particular, when using precision finishing methods such as molding-free and hidden doors, which are preferred in recent high-end construction, or when installing European-style wiring fixtures, such drilling errors significantly degrade the quality of the finish. Furthermore, the method of fixing by driving screws directly into the gypsum board carries the risk of wiring fixtures falling off or fire due to the gypsum collapsing after long-term use, making it urgent to find a solution to this problem.

[0005] Meanwhile, the aforementioned background technology is technical information that the inventor possessed for the derivation of the present invention or acquired during the process of deriving the present invention, and it cannot necessarily be considered publicly known technology disclosed to the general public prior to the filing of the present invention. Prior art literature

[0007] Korean Registered Patent No. 10-1373143 (Published on March 12, 2014) The problem to be solved

[0008] The present invention was devised to solve the problems of the prior art described above, and its technical objective is to provide a construction method for opening registration using an auxiliary bracket for attaching wiring devices, which achieves accurate positional registration between the embedded box and the gypsum board opening by placing an auxiliary bracket at the location of the embedded box after the first gypsum board installation and using it as a guide to form an opening. Furthermore, the present invention aims to provide a construction method that eliminates the difference in floor level by expanding the opening with the same contour even during the second gypsum board lamination, and ultimately maximizes structural fixing strength by ensuring that the wiring device is directly fastened to an auxiliary bracket made of metal rather than gypsum board.

[0009] The technical problems of the present invention are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0011] A construction method for aligning an opening using an auxiliary support for mounting wiring devices according to an embodiment of the present invention comprises: a step of burying a box and forming a wall by installing a box on reinforcing bars and pouring and curing concrete to form a wall; a step of installing a first gypsum board on the front surface of the cured wall with the opening left unprocessed; a step of placing an auxiliary support and forming a first opening by marking the location of the box on the surface of the first gypsum board, placing an auxiliary support for mounting wiring devices, and then cutting the first gypsum board using the inner contour of the said auxiliary support as a guide; and a step of stacking a second gypsum board and aligning cutting by additionally stacking a second gypsum board on the front surface of the first gypsum board and forming an opening again with the same contour as the opening of the first gypsum board to secure interlayer alignment. and a wiring device fastening and fixing step of inserting a buried box or wiring device into the formed opening and structurally fixing it by fastening a piece through an auxiliary support for the wiring device mounting.

[0012] In one embodiment, the auxiliary support for mounting the wiring device may form a guide portion that forms an opening contour according to the standard specifications of the wiring device, be placed in close contact with the front surface of the primary gypsum board to serve as an opening cutting guide and a support plate for fastening, and may include a pilot hole for fastening a screw or a screw thread forming portion.

[0013] A construction method for aligning openings using an auxiliary bracket for mounting wiring devices according to one embodiment of the present invention may further include a board fastening step of fastening the primary gypsum board, the secondary gypsum board, and the auxiliary bracket for mounting wiring devices to each other using a board coupling bracket installed along each opening.

[0014] In one embodiment, the board coupling bracket may include: an upper bracket for fastening the upper end of a coupling opening formed simultaneously on the primary gypsum board, the secondary gypsum board, and the auxiliary support for the wiring device; a lower bracket for fastening the lower end of the coupling opening; a left bracket for fastening the left end of the coupling opening; a right bracket for fastening the right end of the coupling opening; and a separation prevention pin that mutually fastens the connecting portions of the upper bracket, the left bracket, the right bracket, and the lower bracket to prevent separation, and releases the fastening when the user separates them.

[0015] In one embodiment, the upper bracket comprises: a first horizontal support plate seated along the upper inner surface of the coupling opening; a second horizontal support plate positioned in close contact with the first horizontal support plate in a straight line and seated along the upper inner surface of the coupling opening; a first frame insertion groove formed extending inwardly while forming an opening on the side of the first horizontal support plate in close contact with the second horizontal support plate; a second frame insertion groove formed extending inwardly while forming an opening on the side of the second horizontal support plate in close contact with the first horizontal support plate; a horizontal support frame inserted into the inner sides of the first frame insertion groove and the second frame insertion groove to support the space between the first horizontal support plate and the second horizontal support plate; and a first frame support spring installed on the inner side of the first frame insertion groove to support one side of the horizontal support frame and to move the first horizontal support plate away from the second horizontal support plate. A second frame support spring installed on the inner side of the second frame insertion groove to support the other side of the horizontal support frame and causing the second horizontal support plate to move away from the first horizontal support plate; a first upper front cover extending upward perpendicularly from the front end of the first horizontal support plate and seated along the front edge of the coupling opening; a second upper front cover extending upward perpendicularly from the front end of the second horizontal support plate and seated along the front edge of the coupling opening; an upper separation prevention pin that mutually fastens and supports the first upper front cover and the second upper front cover in close contact, and releases the connection between the first upper front cover and the second upper front cover when the user separates them; and a first upper rear cover positioned at the rear end of the first horizontal support plate and seated along the rear edge of the coupling opening.It may include: a second upper rear cover disposed at the rear end of the second horizontal support plate and seated along the rear edge of the coupling opening; a first rear cover driving unit interconnecting the first horizontal support plate and the first upper rear cover; and a second rear cover driving unit interconnecting the second horizontal support plate and the second upper rear cover.

[0016] In one embodiment, the first rear cover driving unit comprises: a driving bolt, the bolt head of which is exposed to the front of the first horizontal support plate, penetrates the first horizontal support plate, and is connected and installed by engaging with the first upper rear cover, and which, as a user rotates it, pulls the first upper rear cover toward the first horizontal support plate to bring the first gypsum board, the second gypsum board, and the auxiliary bracket for mounting the wiring device into close contact with each other and fasten them; and a connecting bolt, which is spaced apart from and parallel to the driving bolt, is connected and installed at the rear end of the first horizontal support plate, is exposed to the rear end of the first horizontal support plate, and is connected and installed by engaging with the first upper rear cover, and rotates together with the driving bolt to pull the first upper rear cover toward the first horizontal support plate, thereby bringing the first gypsum board, the second gypsum board, and the auxiliary bracket for mounting the wiring device into close contact with each other and fastening them. and a driven bolt that is connected and installed by engaging at a right angle with each of the driving bolt and the connecting bolt by a bevel gear, and transmits the rotational driving force of the driving bolt to the connecting bolt; may be included.

[0017] In one embodiment, the left bracket comprises: a vertical support plate seated along the inner circumferential surface of the left end of the coupling opening; an upper frame insertion groove extending along the inner side of the vertical support plate while forming an opening at the upper end of the vertical support plate; a lower frame insertion groove extending along the inner side of the vertical support plate while forming an opening at the lower end of the vertical support plate; an upper support frame installed upright at the lower end of one side of the upper bracket that is in close contact with the upper end of the vertical support plate and inserted into the upper frame insertion groove; a lower support frame installed upright at the upper end of one side of the lower bracket that is in close contact with the lower end of the vertical support plate and inserted into the lower frame insertion groove; an upper frame support spring installed inside the upper frame insertion groove to support the upper support frame and causing the vertical support plate to move away from the upper bracket; and a lower frame support spring installed inside the lower frame insertion groove to support the lower support frame and causing the vertical support plate to move away from the lower bracket. It may include: a left front cover extending perpendicularly from the front end of the vertical support plate and seated along the left side edge of the coupling opening; a left rear cover positioned at the rear end of the vertical support plate and seated along the rear edge of the coupling opening; and a left cover driving unit that interconnects the vertical support plate and the left rear cover. Effects of the invention

[0019] According to the present invention, by first placing an auxiliary support for mounting a wiring device on a primary gypsum board and performing a hole along its inner contour, even a worker with low skill level can form a precise opening that exactly matches the position of the embedded box, thereby having the effect of drastically reducing finishing defects or rework costs caused by drilling errors.

[0020] In addition, the present invention provides an auxiliary support for mounting a wiring device that is embedded between the primary gypsum board and the secondary gypsum board or is fixed in close contact with the front surface of the primary gypsum board to serve as an anchor. Therefore, when installing a wiring device, the screw is not driven into the crumbling surface of the gypsum board but is fastened to the pilot hole or thread of the sturdy auxiliary support, thereby ensuring excellent durability so that the wiring device does not shake or come loose even under the tensile force generated when the plug is detached.

[0021] In addition, through the second gypsum board lamination and alignment cutting step, the opening lines of the two layers of gypsum board are perfectly aligned, so no gaps occur between the wiring fixture plate and the wall surface, providing an aesthetically pleasing appearance, and additionally, the effect of minimizing air leakage or thermal insulation loss can be expected, especially in wall structures where airtightness is required.

[0022] Finally, when additional board joining brackets are applied, the cross-section of the cut gypsum board is wrapped and protected by the brackets, which prevents the scattering of gypsum dust and maintains pleasant indoor air quality, and has the effect of greatly improving the local rigidity of the wall by binding multiple boards into a single structure.

[0023] The effects of the present invention are not limited to those mentioned above, and various effects may be included within the scope obvious to a person skilled in the art from the contents described below. Brief explanation of the drawing

[0025] FIG. 1 is a flowchart illustrating a method for constructing an opening alignment using an auxiliary support for a wiring device according to one embodiment of the present invention. Figure 2 is a diagram illustrating each step of Figure 1. FIG. 3 is a drawing showing a landfill box used in the present invention. FIG. 4 is a flowchart illustrating a method for constructing an opening alignment using an auxiliary support for a wiring device according to another embodiment of the present invention. Figure 5 is a drawing showing the installation structure of a board coupling bracket used in the present invention. Figures 6 and 7 are drawings showing the board coupling bracket of Figure 5. Figure 8 is a drawing showing the upper bracket of Figure 6. These are drawings showing the first rear cover drive unit of FIGS. 9 and FIGS. 8. Figure 10 is a drawing showing the left bracket of Figure 6. Specific details for implementing the invention

[0026] The following detailed description of the invention refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that various embodiments of the invention are different but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in relation to one embodiment. It should also be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the following detailed description is not intended to be limiting, and the scope of the invention is limited only by the appended claims, including all equivalents to those claimed therein, provided appropriately described. Similar reference numerals in the drawings refer to the same or similar functions across various aspects.

[0027] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

[0028] FIG. 1 is a flowchart illustrating a method for constructing an opening alignment using an auxiliary support for a wiring device according to one embodiment of the present invention.

[0029] Referring to FIG. 1, a construction method for aligning an opening using an auxiliary support for attaching a wiring device according to one embodiment of the present invention includes a step of burying a buried box and forming a wall (S100), a step of constructing a first gypsum board (S200), a step of placing an auxiliary support and forming a first opening (S300), a step of stacking a second gypsum board and aligning cut (S400), and a step of fastening and fixing a wiring device (S500).

[0030] The buried box installation and wall formation step (S100) is a foundation step for forming the walls of a building, which is a process of securing space for electrical wiring inside a reinforced concrete structure. Specifically, the buried box installation and wall formation step (S100) involves securing the buried box (1) at a location indicated on the design drawing during the rebar placement work, installing formwork, and then pouring concrete. At this time, the buried box installation and wall formation step (S100) firmly secures the buried box (1) so that its position does not change due to being pushed by earth pressure during the concrete curing process, and after curing is completed, the formwork is removed to form a wall such that the front of the buried box (1) is exposed to or located close to the wall surface.

[0031] The first gypsum board installation step (S200) is a process of attaching a first gypsum board to the front of the wall to serve as an insulating and finishing base material for interior finishing. Unlike conventional methods, the first gypsum board installation step (S200) does not pre-drill holes to match the position of the embedded box (1), but instead attaches a first gypsum board (B1) in the form of a flat plate directly to the front of the wall. This first gypsum board installation step (S200) fundamentally eliminates positional errors that may occur during pre-drilling, thereby providing the effect of laying the groundwork for precise construction through on-site measurements.

[0032] The step of placing the support and forming the first opening (S300) is a process of accurately positioning the embedded box (1) on the first gypsum board (B1) and installing a cutting guide. The step of placing the support and forming the first opening (S300) detects and marks the center point of the embedded box (1) embedded on the surface of the first gypsum board (B1), and attaches or temporarily fixes the support (2) for mounting the wiring device at that location. Subsequently, the step of placing the support and forming the first opening (S300) forms a first opening that exactly matches the opening of the embedded box (1) by cutting the first gypsum board (B1) using the inner contour of the support (2) for mounting the wiring device as a guide for the cutting tool. In particular, the step of placing the support and forming the first opening (S300) ensures that the support (2) prevents the saw blade or router bit from coming off during the cutting operation, thereby ensuring that the cut surface is smooth and maintains verticality.

[0033] The second gypsum board lamination and alignment cutting step (S400) is a process of adding a second gypsum board and expanding the opening to increase the durability and sound insulation of the wall. In the second gypsum board lamination and alignment cutting step (S400), the second gypsum board (B2) is firmly laminated to the front surface of the first gypsum board (B1) using adhesive or staple pins. Subsequently, in the second gypsum board lamination and alignment cutting step (S400), the second gypsum board (B2) is cut by once again using the outline of the auxiliary support (2) for installing wiring devices located in the opening or inside of the already formed first gypsum board (B1) as a guide. Through this, the second gypsum board lamination and alignment cutting step (S400) ensures interlayer alignment where the opening of the first gypsum board (B1) and the opening of the second gypsum board (B2) perfectly match without any step difference, thereby preventing lifting when installing wiring devices.

[0034] The wiring device fastening and fixing step (S500) is the final process of installing and finishing the electrical device to be actually used in the formed opening. In the wiring device fastening and fixing step (S500), a recessed box (1) such as an outlet or switch, or the main body of the wiring device, is inserted into the aligned opening, and wires are connected. At this time, the wiring device fastening and fixing step (S500) secures a structurally very strong fixing force through a metal-to-metal connection without crumbling of the plasterboard by fastening a screw to an auxiliary support (2) for mounting the wiring device embedded inside, rather than to the plasterboard itself.

[0035] The method of construction for opening alignment using an auxiliary support for attaching a wiring device according to one embodiment of the present invention having the configuration described above solves the problem of mismatch between the embedded box (1) and the gypsum board hole location that frequently occurs in a double (2PLY) gypsum board construction environment, and by utilizing the auxiliary support for attaching the wiring device as a cutting guide and at the same time as a fixed support, it has the effect of significantly improving the precision of construction and the fixing strength of the wiring device.

[0037] FIG. 3 is a drawing showing a landfill box used in the present invention.

[0038] Referring to FIG. 3, the auxiliary support (2) for the wiring device includes a guide portion (21) and a pilot hole or thread forming portion (22).

[0039] The guide section (21) is configured to provide an opening shape that fits the specifications of the wiring device. The guide section (21) is manufactured in the form of a square frame corresponding to standardized wiring device specifications (KS, etc.), such as 1-hole, 2-hole, and 4-hole, so that the operator can form an opening of a specified size simply by moving the tool along the inside of the frame without the need for separate dimensional measurements. In addition, the guide section (21) is formed of a metal material with high hardness to withstand friction with the cutting tool, or has a wear-resistant coating applied to the tool contact surface, thereby maintaining dimensional accuracy even with repeated use.

[0040] The pilot hole or thread forming part (22) is a fastening means for physically joining the wiring device. The pilot hole or thread forming part (22) is provided in a form that is perforated or tapped at a predetermined position in the edge area of ​​the guide part (21). Specifically, the pilot hole or thread forming part (22) is positioned to correspond exactly to the position of the screw hole formed in the fixing plate of the wiring device, so that when the wiring device is inserted and the screw is driven in after construction is completed, it can be fastened immediately without separate position adjustment. In particular, the pilot hole or thread forming part (22) induces the entry of the screw even when it is embedded in a sandwich form between the primary gypsum board (B1) and the secondary gypsum board (B2), providing support so that the screw is firmly driven into the support member (2) without the screw spinning freely in the gypsum board.

[0041] An auxiliary support (2) for attaching a wiring device according to one embodiment of the present invention having the configuration described above has the advantage of simplifying the construction process and ensuring uniform quality of the result by simultaneously performing the role of a template for forming an opening and the role of an anchor for fixing the wiring device.

[0043] FIG. 4 is a flowchart illustrating a method for constructing an opening alignment using an auxiliary support for a wiring device according to another embodiment of the present invention.

[0044] Referring to FIG. 4, the method for constructing an opening alignment using an auxiliary support for installing wiring devices includes a step of burying a buried box and forming a wall (S100), a step of constructing a first gypsum board (S200), a step of placing an auxiliary support and forming a first opening (S300), a step of stacking second gypsum boards and aligning cuts (S400), a step of fastening and fixing wiring devices (S500), and a step of fastening boards (S400-1).

[0045] Here, the steps of burying the box and forming the wall (S100), the first gypsum board installation (S200), the placement of the support and the first opening formation (S300), the second gypsum board lamination and alignment cutting (S400), and the fastening and fixing of the wiring device (S500) are identical to the components of FIG. 1, so the description thereof will be omitted to avoid duplication of description.

[0046] The board fastening step (S400-1) is a process that reinforces the rigidity of the cut cross-section and increases the interlayer bonding strength. The board fastening step (S400-1) is performed to prevent dust scattering or board deformation caused by moisture that may occur if the cut surfaces of the primary and secondary gypsum boards are exposed. Specifically, the board fastening step (S400-1) inserts a board fastening bracket (400) that surrounds the edge of the opening, thereby compressing and fastening the primary gypsum board (B1), the secondary gypsum board (B2), and the auxiliary support (2) for attaching wiring devices located between them into a single structure. Through this, the board fastening step (S400-1) prevents the laminated gypsum boards from spreading apart due to the tensile force generated when plugging in or unplugging the wiring device.

[0047] The method of constructing an opening alignment using an auxiliary bracket for attaching a wiring device according to one embodiment of the present invention, having the configuration described above, has the effect of significantly enhancing the safety of electrical equipment by securing significantly higher vibration resistance and impact resistance than a method of simply fixing with screws through an additional fastening step using a board coupling bracket.

[0049] Figures 6 and 7 are drawings showing the board coupling bracket of Figure 5.

[0050] Referring to FIGS. 6 and 7, the board coupling bracket (400) includes an upper bracket (410), a lower bracket (420), a left bracket (430), a right bracket (440), and a separation prevention pin (450).

[0051] The upper bracket (410) is configured to support the upper surface of the joint opening. The upper bracket (410) is fitted into the upper corner of the opening to protect the upper cut surface of the primary and secondary gypsum boards and to distribute the load applied from above.

[0052] The lower bracket (420) is configured to support the lower surface of the joint opening. The lower bracket (420) is positioned opposite the upper bracket (410) and prevents the plasterboard at the bottom of the opening from sagging or being damaged.

[0053] The left bracket (430) is configured to support the left side of the joint opening. The left bracket (430) is positioned vertically and installed in a manner that connects the left end of the upper bracket (410) and the lower bracket (420).

[0054] The right end bracket (440) is configured to support the right side of the joint opening. The right end bracket (440) is positioned symmetrically with respect to the left end bracket (430) to finish the right cut surface of the opening and complete the overall square frame structure.

[0055] The anti-separation pin (450) is a fastening member that connects each bracket to each other. The anti-separation pin (450) is inserted into the corner connection area where the upper, lower, left, and right brackets meet, and performs a locking function to prevent the bracket assembly from being disassembled due to external impact or vibration. Additionally, the anti-separation pin (450) has a structure that allows the user to easily release the bracket by removing it with a tool when maintenance or removal is required.

[0056] A board coupling bracket (400) according to one embodiment of the present invention having the configuration described above adopts an assembly modular structure so as to be able to flexibly respond to openings of various sizes, and provides excellent structural stability by supporting each side independently while the whole is bound together as one.

[0058] Figure 8 is a drawing showing the upper bracket of Figure 6.

[0059] Referring to FIG. 8, the upper bracket (410) includes a first horizontal support plate (411), a second horizontal support plate (412), a first frame insertion groove (413), a second frame insertion groove (414), a horizontal support frame (415), a first frame support spring (416), a second frame support spring (417), a first upper front cover (418), a second upper front cover (419), an upper anti-separation pin (4110), a first upper rear cover (4111), a second upper rear cover (4112), a first rear cover driving unit (4113), and a second rear cover driving unit (4114).

[0060] Here, the lower bracket (420) is identical to the upper bracket (410) described later, so the description is omitted to avoid duplication of explanation.

[0061] The first horizontal support plate (411) is a base member that forms the left half of the upper bracket. The first horizontal support plate (411) is seated in surface contact with the left portion of the upper inner surface of the opening.

[0062] The second horizontal support plate (412) is a base member that constitutes the right half of the upper bracket. The second horizontal support plate (412) is positioned on the same line as the first horizontal support plate (411), but is arranged separately so that the distance from the first horizontal support plate (411) can be adjusted according to the width of the opening.

[0063] The first frame insertion groove (413) is a configuration that provides space for structural connection. The first frame insertion groove (413) is formed by being recessed longitudinally within the first horizontal support plate (411), particularly on the side facing the second horizontal support plate (412), to form a path through which the horizontal support frame (415) can be slidably inserted.

[0064] The second frame insertion groove (414) is a connecting space formed on the side of the second horizontal support plate (412). The second frame insertion groove (414) is formed to face the first frame insertion groove (413) so that the opposite end of the horizontal support frame (415) is inserted therein.

[0065] The horizontal support frame (415) serves as a frame connecting the two separated plates. The horizontal support frame (415) has both ends inserted into the first frame insertion groove (413) and the second frame insertion groove (414), respectively, to support the bending moment so that the first horizontal support plate (411) and the second horizontal support plate (412) do not become misaligned with each other and maintain a horizontal state.

[0066] The first frame support spring (416) is configured to provide elastic force to increase the contact force. The first frame support spring (416) is installed inside the first frame insertion groove (413) and pushes the horizontal support frame (415) outward, thereby applying pressure so that the first horizontal support plate (411) is strongly pressed toward the left corner of the opening.

[0067] The second frame support spring (417) is configured to provide elastic force in the opposite direction. The second frame support spring (417) is installed inside the second frame insertion groove (414) and applies force to cause the second horizontal support plate (412) to extend toward the right corner of the opening. Through this, the upper bracket (410) can be tightly fitted by automatically adjusting the width with the elasticity of the spring, even if the width of the opening varies slightly due to construction errors.

[0068] The first upper front cover (418) and the second upper front cover (419) are components responsible for finishing the front portion of the wall. They each bend upward from the front of the first and second horizontal support plates to cover the front edge of the wall (secondary gypsum board), thereby forming a neat appearance.

[0069] The upper separation prevention pin (4110) secures the combined state of the front covers. The upper separation prevention pin (4110) is fastened by penetrating the area where the first upper front cover (418) and the second upper front cover (419) overlap each other, thereby preventing the two plates from being arbitrarily spread apart or separated.

[0070] The first upper rear cover (4111) and the second upper rear cover (4112) are clamping members that support the rear of the wall and secure the bracket. They are located at the rear end of each plate and press the rear of the wall (primary gypsum board) by moving forward according to the operation of the drive unit.

[0071] The first rear cover drive unit (4113) and the second rear cover drive unit (4114) are actuators that move the rear cover. They convert rotational motion into linear motion using a screw coupling method, pulling the rear cover toward the front cover and strongly compressing and fixing the plasterboard and support located between them.

[0072] An upper bracket (410) according to one embodiment of the present invention having the configuration described above is characterized by combining a width-variable structure using a spring and a screw-driven clamping structure, so that it can be universally applied to openings of various dimensions and exerts a strong fastening force regardless of wall thickness.

[0074] These are drawings showing the first rear cover drive unit of FIGS. 9 and FIGS. 8.

[0075] Referring to FIG. 9, the first rear cover drive unit (4113) includes a drive bolt (41131), a connecting bolt (41132), and a driven bolt (41133).

[0076] Here, the second rear cover drive unit (4114) is identical to the first rear cover drive unit (4113) described later, so the description is omitted to avoid duplication of explanation.

[0077] The drive bolt (41131) is an input shaft that receives the user's operating force. The head of the drive bolt (41131) is exposed to the front of the wall and can be rotated with a screwdriver or similar tool, and upon rotation, generates the main power to pull the first upper rear cover (4111) through threaded engagement.

[0078] The connecting bolt (41132) is an auxiliary shaft positioned parallel to the driving bolt to distribute the fastening force. By simultaneously pulling another point of the first upper rear cover (4111) at a position spaced apart from the driving bolt (41131), the connecting bolt (41132) causes the rear cover to move parallel without tilting and tighten the wall with uniform pressure.

[0079] The driven bolt (41133) is a medium for transmitting driving force. The driven bolt (41133) is engaged with the driving bolt (41131) and the connecting bolt (41132) in a bevel gear manner. Therefore, even if the user rotates only the driving bolt (41131), the rotational force is transmitted perpendicularly through the driven bolt (41133) and then transmitted to the connecting bolt (41132), causing both bolts to rotate simultaneously at the same speed.

[0080] The first rear cover drive unit (4113) according to one embodiment of the present invention having the configuration described above maximizes construction convenience by implementing multi-point fastening with a single operating point, and also provides a locking effect that prevents the bolt from loosening through gear meshing, thereby preventing the connection from becoming loose even after long-term use.

[0082] Figure 10 is a drawing showing the left bracket of Figure 6.

[0083] Referring to FIG. 10, the left bracket (430) includes a vertical support plate (431), an upper frame insertion groove (432), a lower frame insertion groove (433), an upper support frame (434), a lower support frame (435), an upper frame support spring (436), a lower frame support spring (437), a left front cover (438), a left rear cover (439), and a left cover driving unit (4310).

[0084] Here, the right bracket (440) is identical to the left bracket (430) described later, so to avoid duplication of explanation, the description thereof will be omitted.

[0085] The vertical support plate (431) is a component that forms the body of the left bracket. The vertical support plate (431) covers and protects the left inner wall surface of the opening.

[0086] The upper frame insertion groove (432) and the lower frame insertion groove (433) are spaces for vertical connection. They are formed longitudinally inside the upper and lower ends of the vertical support plate (431), respectively.

[0087] The upper support frame (434) is a member that mediates the connection with the upper bracket (410). The upper support frame (434) is fixed by protruding vertically from one side of the lower part of the upper bracket (410) and is inserted into the upper frame insertion groove (432) to maintain the right angle of the corner part and transmit the load.

[0088] The lower support frame (435) is a member that mediates the connection with the lower bracket (420). The lower support frame (435) protrudes from one side of the upper part of the lower bracket (420) and is inserted into the lower frame insertion groove (433).

[0089] The upper frame support spring (436) and the lower frame support spring (437) are vertical elastic cushioning devices. They exert elasticity in the direction of pushing the support frame out from inside each insertion groove, causing the upper bracket (410) and the lower bracket (420) to receive force in a direction away from each other. This provides tension that causes the entire bracket frame to be tightly fitted into the upper and lower inner walls of the opening.

[0090] The left front cover (438) is configured to finish the front portion of the left wall, and the left rear cover (439) is configured to provide tightening at the rear of the wall. The left cover drive unit (4310) operates on a principle similar to the drive unit of the upper bracket described earlier to advance the left rear cover (439) and compress the wall.

[0091] A left bracket (430) according to one embodiment of the present invention having the configuration described above has a spring coupling structure that is flexible in the vertical direction as well, thereby actively responding to deviations in vertical height as well as horizontal width, and can achieve a perfect finish without gaps.

[0094] The embodiments described above are for illustrative purposes only, and those skilled in the art will understand that the embodiments described above can be easily modified into other specific forms without altering the technical concept or essential features of the embodiments described above. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single unit may be implemented in a distributed manner, and components described as distributed may likewise be implemented in a combined form.

[0096] The scope of protection sought through this specification is defined by the claims set forth below rather than by the detailed description above, and should be interpreted to include all modifications or variations derived from the meaning and scope of the claims and the concept of equivalents. Explanation of the symbols

[0098] 400: Board joining bracket 410: Top bracket 420: Bottom bracket 430: Left bracket 440: Velvet bracket 450: Anti-separation pin

Claims

Claim 1 A step of installing a buried box on reinforcing bars and forming a wall by pouring and curing concrete; a step of installing a primary gypsum board on the front surface of the cured wall with the opening left unprocessed; a step of placing an auxiliary support and forming a primary opening by marking the location of the buried box on the surface of the primary gypsum board, placing an auxiliary support for mounting wiring devices, and then cutting the primary gypsum board using the inner contour of the said auxiliary support as a guide; a step of laminating a secondary gypsum board on the front surface of the primary gypsum board and forming a secondary opening with the same contour as the opening of the primary gypsum board to ensure interlayer alignment; and a step of fastening and fixing a wiring device by inserting a buried box or wiring device into the formed opening and structurally fixing it by fastening a screw through the auxiliary support for mounting wiring devices. A method for aligning openings using an auxiliary bracket for mounting wiring devices, further comprising: a board fastening step of fastening the primary gypsum board, the secondary gypsum board, and the auxiliary bracket for mounting wiring devices together using a board fastening bracket installed along each opening; wherein the board fastening bracket comprises: an upper bracket for fastening the upper end of a coupling opening formed simultaneously on the primary gypsum board, the secondary gypsum board, and the auxiliary bracket for mounting wiring devices; a lower bracket for fastening the lower end of the coupling opening; a left bracket for fastening the left end of the coupling opening; a right bracket for fastening the right end of the coupling opening; and a separation prevention pin that fastens the respective connection portions of the upper bracket, the left bracket, the right bracket, and the lower bracket to prevent separation, and releases the fastening when a user separates them. Claim 2 A construction method for aligning an opening using an auxiliary support for mounting a wiring device according to claim 1, wherein the auxiliary support for mounting the wiring device forms a guide portion that forms an opening outline according to the standard specifications of the wiring device, is placed in close contact with the front surface of the primary gypsum board to serve as an opening cutting guide and a support plate for fastening, and includes a pilot hole for fastening a screw or a screw thread forming portion. Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 delete

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