KR102051469B1 - Terminal box unit of apartment house electricity - Google Patents

Abstract

The present invention relates to a terminal box device of apartment house electricity and, more specifically, to a terminal box device of apartment house electricity which can easily perform angle adjustment and attachment and detachment of a base panel during working for repairs or maintenance of a branch circuit of a distribution board and, furthermore, can prevent an electric leakage or a short circuit phenomenon caused by condensation and the like generated in a terminal box in advance so as to prevent safe accidents, thereby further strengthening safety.

Description

Terminal box unit of apartment house electricity

The present invention relates to a terminal box device of a multi-unit electric house, and more particularly, it is possible to facilitate the angle adjustment and mounting of the base panel during operation for repair or maintenance of the branch circuit of the switchboard, and further generated inside the terminal box The present invention relates to an electrical terminal box device of an apartment house which prevents a short circuit due to condensation and prevents a safety accident and further enhances safety.

In general, multi-unit housings have a power divider that distributes and supplies the power supplied to various loads, and detects the voltage state supplied to the load to quickly cut off the electricity in the event of an abnormality such as a short circuit, thereby preventing safety accidents caused by electricity. A switchgear is provided with various devices such as an earth leakage circuit breaker or a circuit breaker that selectively cuts off electricity only to a load side having an abnormality, and an electric power meter for measuring the total amount of electric power used for a certain period of time.

Switchboards are usually buried on the wall during construction, and some of them are installed to be exposed to the outside, so as to control the selective supply of electricity as needed, and to make management and maintenance convenient.

That is, as illustrated in FIG. 1, the switchboard includes a base panel 11 made of an insulating material fixedly installed inside the terminal box 10, a branch circuit 12 formed on the base panel 11, and the branch circuit ( It is provided with an intermediate portion of 12) includes a switch 13 to connect or cut off the branch circuit (12).

At this time, the output terminal 15 together with the input terminal 14 is formed in the base panel 11 of the branch circuit 12, respectively, and the lead line 16 and the input terminal 14 and the output terminal 15, respectively. The leader line 17 is connected to each other.

Accordingly, the electricity supplied through the lead wire 16 is branched to be output through the lead wire 17, and the lead wire 16 is provided as a high-voltage single wire, whereas the lead wire 17 is made of low voltage cables.

The terminal box 10 is usually provided to be partially embedded in the concrete wall of the building, the boundary portion of the terminal box 10 and the concrete wall is provided with a cable guide 20 to guide while protecting the branched wire for power distribution. do.

Meanwhile, a plurality of wires drawn out and drawn into the switchboard inside the concrete wall of the building, in particular, a plurality of distributed wires, are divided into a predetermined position inside the switchboard and drawn out again into the concrete wall, where the gap between the switchboard and the concrete wall is closed. Connections are used to guide the wires.

However, the conventional base panel 11 installed in the terminal box 10 is a structure that is fixed close to the one-piece structure, so that the base panel 11 itself needs to be replaced due to aging and corrosion or the branch circuit 12 is provided. When the switch 13 is damaged and needs to be repaired or repaired, or when circuit expansion, maintenance, etc., work has to be done in a vertical position. There was a lot.

In addition, when the moisture caused by the condensation inside the terminal box 10, the risk of safety accidents such as short circuit or short circuit was very high.

Republic of Korea Patent Registration No. 10-0972468 (2010.07.20.) 'Ceiling electric distribution box for public housing'

The present invention was created in view of the above-described problems in the prior art, and can be easily solved by adjusting the angle and mounting of the base panel during operation for repair or maintenance of the branch circuit of the switchboard. The main purpose of the present invention is to provide an electrical terminal box device of an apartment house that prevents a safety accident and further enhances safety by preventing a short circuit or short circuit caused by condensation inside the terminal box.

The present invention is a means for achieving the above object, the branch circuit having a base panel 11 of an insulating material provided therein, the input terminal 14 and the output terminal 15 provided in the base panel 11 (12), a switch 13 provided to connect or disconnect the branch circuit 12 at an intermediate position of the branch circuit 12, the input terminal 14 and the output terminal formed in the branch circuit 12 ( 15. An electrical terminal box device comprising a terminal box (10) having a lead wire (16) and a lead wire (17) connected to each of (15);
The terminal box 10 is formed in a rectangular box shape having a door DR; Vent holes PA of the same size are formed in the upper front end and the lower end of the terminal box 10; The through hole 110 is formed in the center of the plate surface of the base panel 11; A plurality of insertion guide ribs 120 having a 'b' shape protrude from the rear surface of the base panel 11 at the center thereof; The fixing plate 130 is inserted into the insertion guide rib 120; A fixing groove 140 corresponding to the through hole 110 is formed at the center of the fixing plate 130. The upper arm 150 is integrally fixed to the rear surface of the fixing plate 130 to be perpendicular to the plate thickness direction; An upper joint 160 is fixed to an end of the upper arm 150; One end of the intermediate arm 170 is fixed to the upper joint 160; A lower joint 180 is fixed to the other end of the intermediate arm 170; An upper end of the lower arm 190 is fixed to the lower joint 180; A fixed base 200 is fixed to the other end of the lower arm 190; The fixed base 200 is fixed to the inner bottom surface of the terminal box 10 is configured to fold the base panel (11);
Four corners of the inside of the terminal box 10, the digestive fluid sprayer 400 is further installed; The extinguishing fluid sprayer 400 is formed in a 'b' shape and the interior of the empty nebulizer body 410, and formed at each end and corner of the nebulizer body 410, the hook fixed position (DOL) is inserted 420, a plurality of injection holes 430 formed on the inner surface of the sprayer body 410, a cover 440 for sealing the opening (OPN) formed on the surface of the sprayer body 410 and closed; It consists of a digestive fluid tube (450) embedded in the nebulizer body (410) through the opening (OPN);
A double stepped stone step DT is formed around the opening OPN, and a stepped part 442 fitted between the stepped parts DT is formed on the circumferential surface of the cover 440 to form an adhesive. The stone jaw fitting portion 442 is sandwiched between the stone jaws DT and interposed therebetween to be adhesively fixed;
The digestive fluid tube 450 is filled with a digestive fluid, the extinguishing fluid is 20% by weight of liquid carbon dioxide, 35% by weight of sodium bicarbonate, 10% by weight of ammonium phosphate, 5% by weight of allyl isothiocyanate, and the remaining water. Done;
The door DR is further provided with a pest blocking unit 500, wherein the pest blocking unit 500 includes a first insect repellent roll housing 500 that can be fixed to one side of the frame of the door DR, The first insect repellent roll housing 500 is provided with a first insect repellent roll head 510 is provided with a spiral spring or a torsion spring to automatically retract the first insect repellent screen 520 in the form of a roll screen, the door And a second insect repellent roll housing 600 which can be fixed to the other side of the frame. The second insect repellent roll head 600 is installed inside the second insect repellent roll housing 600 to form a roll screen. It is provided with a spiral spring or a torsion spring so that the second insect screen 620 can be automatically inserted, and the first connection port (C1) and the end of the first insect screen 520 and the second insect screen 620, respectively; A second connector C2 is provided, and the first connector C1 and the second connector C2 are each screen. It is formed to correspond to the upper and lower lengths of the screen has to have a form in which each screen is engaged to be fixed, the first magnet (MG1) and the second magnet (MG2) is embedded to face each other is disposed to create a mutual suction force;
The base panel 11 and the fixed base 200 are mixed with a first magnesium phosphate (Mg (H ₂ PO ₄ ) ₂ ) and the first aluminum phosphate (Al (H ₂ PO ₄ ) ₃ ) in a weight ratio of 1: 1. 15% by weight of the mixed solution, 6.5% by weight of propylene dicarboxylic acid for imparting anionic functionality to the inside and the surface of the polymer, 1.5% by weight of triglyceride for forming a film to increase surface smoothness and impart antifouling properties, and to prevent cracking and 3.5% by weight of coal tar to impart waterproof performance, 8.5% by weight of diaryl phthalate to improve adhesion and toughness, and 6.5% by weight of polyethylene glycol phenyl ether to prevent aggregation of particles and ensure uniform dispersibility. And a composition comprising 1.5 wt% of BHT (Butylated HydroxyToluene), 1.0 wt% of rosin, 1.0 wt% of paraffin wax, and the remaining ethylene vinyl acetate, which inhibit natural oxidation or aging. Provides an electrical terminal box device for an apartment house.

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According to the present invention, it is possible to easily adjust the angle of the base panel and mounting and detachment when working for the repair or maintenance of the branch circuit of the switchboard, and further prevents short circuit or short circuit due to condensation generated inside the terminal box. It can have the effect of preventing safety accidents and enhancing safety.

1 is a block diagram of a terminal box device of a multi-unit house according to the prior art.
2 is an exemplary view of a terminal box constituting a switchboard according to the present invention.
FIG. 3 is a schematic view illustrating a rotational structure of the base panel installed in the terminal box of FIG. 2.
4 is an exemplary view illustrating an operation example of a base panel installed in the terminal box of FIG. 2.
5 is an exemplary view showing a fixing structure of the basal panel according to the present invention.
6 is an exemplary view of a ventilation unit installed inside the terminal box according to the present invention.
Figure 7 is an exemplary side cross-sectional view showing an installation example of the ventilation unit according to the present invention.
8 and 9 are exemplary views of a fire extinguishing unit according to the present invention.
10 is an exemplary view of a pest blocking unit according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

Prior to the description of the present invention, the following specific structures or functional descriptions are merely illustrated for the purpose of describing embodiments according to the inventive concept, and the embodiments according to the inventive concept may be implemented in various forms, It should not be construed as limited to the embodiments described herein.

In addition, embodiments in accordance with the concepts of the present invention may be modified in various ways and may have various forms, specific embodiments will be illustrated in the drawings and described in detail herein. However, this is not intended to limit the embodiments in accordance with the concept of the present invention to a particular disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

As illustrated in FIG. 2, the terminal box 10 constituting the terminal box device of the multi-family house according to the present invention is formed in a rectangular box shape having a door DR.

In particular, unlike the conventional, the upper and lower ends of the front of the terminal box 10 is formed with the same size of the ventilation openings (PA), the filter (not shown) in the ventilation openings (PA) can be mounted in the form of a cartridge.

3 to 5, the base panel 11 embedded in the terminal box 10 is configured to be rotated.

To this end, the through hole 110 is formed in the center of the plate surface of the base panel 11, the insertion guide rib 120 of the 'b' shape with the through hole 110 in the center of the back of the base panel 11 Is formed to protrude so as to form a rectangular shape as a whole.

In addition, a fixing plate 130 is inserted into the insertion guide rib 120, and a fixing groove 140 corresponding to the through hole 110 is formed in the center of the fixing plate 130.

In addition, the upper arm 150 is integrally fixed to the rear surface of the fixing plate 130 to be perpendicular to the plate thickness direction, and the upper joint 160 is fixed to the end of the upper arm 150, and the upper joint ( One end of the intermediate arm 170 is fixed to 160, the lower joint 180 is fixed to the other end of the intermediate arm 170, and the upper end of the lower arm 190 is fixed to the lower joint 180, A fixing base 200 is fixed to the other end of the lower arm 190, and the fixing base 200 is fixed to the inner bottom surface of the terminal box 10 by bolts or screws.

Therefore, the base panel 11 is configured to be folded in a state in which it is installed inside the terminal box 10.

In particular, as shown in an enlarged view in FIG. 5, the periphery of the through hole 110 is recessed to a predetermined depth so that the stepped jaw 112 is formed, and the stepped 112 has a hemispherical convex protrusion 114 spaced in the circumferential direction. A plurality is formed.

In addition, the fixing bolt BT is bolted in a state in which the coil spring 116 is inserted into the through hole 110 and then seated in the fixing groove 140, and the head of the fixing bolt BT is prevented from loosening. On the lower surface of HD, a plurality of semicircular grooves 118 are formed at intervals in the circumferential direction.

Therefore, after the fixing bolt BT is fastened, the play is minimized due to the elastic repulsive force of the coil spring 116, and the groove 118 is engaged with the convex protrusion 114, so that the bolt loosening prevention function after tightening is easily increased. It has a structure that does not solve.

In addition, the upper joint 160 and the lower joint 180 is preferably a joint motor 230 is installed to be configured to rotate by mechanical force.

That is, the joint motor 230 is a biaxial motor, and has a structure in which the motor shaft 232 protrudes from both sides of the motor body, and a spline is formed in the motor shaft 232.

In addition, the joint motor 230 is integrally fixed to the upper end of the intermediate arm 170 and the lower arm 190, respectively, the lower end of each of the upper arm 150 and the intermediate arm 170 to the motor shaft 232 It has a structure that is fitted and splined.

To this end, at each lower end of the upper arm 150 and the intermediate arm 170, a motor insertion groove (HOM) into which the joint motor 230 can be inserted is formed in a recess, and both side walls of the motor insertion groove (HOM) are formed. The spline groove (SPL) is formed to be splined to the motor shaft 232 is fitted.

At this time, one side wall of the motor insertion groove (HOM) for the installation of the joint motor 230 should have a structure of a method of being fixed through a fixing member (SC), such as bolts or screws in a separated state.

In addition, the articulated motor 230 is preferably a step motor that is reciprocally rotated within the 90 ° range.

When combined in this way, the base panel 11 can be easily folded using a mechanical force.

In particular, when folded as shown in (a), (b) of Figure 4 when the intermediate arm 170 is folded 90 degrees in the clockwise direction, the upper arm 150 is folded 90 degrees in the counterclockwise direction of the base panel 11 The wiring work surface can be arranged to always face the upper surface, which greatly improves the work convenience.

In addition, although not shown, a commercially available wire connection connector, particularly an IDMC (Insulation Displacement & Multiple Connection) type stripless wire connection connector, is used to connect wires to the base panel 11 between the wire and the connector. The innovative connection resistance can be lowered, further improving stability.

Here, the connection resistance (R) = ρ × L / S (ρ is the resistivity constant of the material, L is the length of the wire, S is the contact area). By increasing S, the resistance value is significantly lowered.

On the other hand, a pair of vertical airflow guides 300 are installed on both sides of the terminal box 10, and the vertical airflow guides 300 are provided with a plurality of horizontal airflow guides 310 at intervals along the longitudinal direction. The upper side of the vertical blower guide 300 is connected to the outlet end of the blower 330 after the connecting blower guide 320 is extended.

In addition, the inlet end of the blower 330 is in communication with the vent (PA) formed in the upper end of the terminal box 10 through the suction guide 340.

Therefore, by introducing the outside air by the periodic drive of the blower 330 by ventilating the inside of the terminal box 10 it is possible to remove the internal moisture and keep it in a dry state.

Here, the reason for suctioning through the upper vent (PA) is to increase the drying efficiency by inhaling the air of the higher temperature as possible because the air temperature of the upper side is higher than the lower side because the hot air rises as the temperature rises, The air blown into the terminal box 10 is discharged through the vent hole PA formed at the bottom of the terminal box 10.

In addition, a controller 210 is installed on the intermediate arm 170 to control the rotational driving of the joint motor 230.

Of course, it is preferable to include a wireless transmitter and receiver 220 to adjust through wireless communication, and the blower 330 is also particularly preferably configured to be controlled by the controller 210 having a wireless communication module capable of short-range wireless communication. .

In this case, a humidity sensor may be installed inside the terminal box 10, and the controller 210 and the humidity sensor may be linked to control the driving of the blower 330 according to the detected value.

In addition, since the base panel 11 and the plurality of arms and the fixed base 200 must have durability, insulation, waterproofness, and corrosion resistance (corrosion resistance), the first magnesium phosphate (Mg (H ₂ PO ₄ ) ₂ ) and the first 15 wt% of a mixed solution of aluminum monophosphate (Al (H ₂ PO ₄ ) ₃ ) mixed at a weight ratio of 1: 1, 6.5 wt% of propylene dicarboxylic acid, 1.5 wt% of triglyceride, 3.5 wt% of coal tar, , 8.5 wt% of diarylphthalate, 6.5 wt% of polyethylene glycol phenyl ether, 1.5 wt% of BHT (Butylated HydroxyToluene), 1.0 wt% of rosin, 1.0 wt% of paraffin wax, and the remaining ethylene vinyl acetate. .

Here, the mixed solution of the first magnesium phosphate (Mg (H ₂ PO ₄ ) ₂ ) and the first aluminum phosphate (Al (H ₂ PO ₄ ) ₃ ) in a weight ratio of 1: 1 is supplied through the addition of metal phosphate. Added to enhance insulation.

In addition, the propylene dicarboxylic acid is added as a reactive monomer to impart anionic functional groups to the inside and the surface of the polymer to maintain a firm bonding force.

In addition, the triglyceride is a coating agent mainly composed of ricinoleic acid, and is particularly added to increase surface smoothness of each of the outer and inner surfaces, to increase antifouling properties, and to increase corrosion resistance.

In addition, the coal tar is added to prevent cracking and waterproofing performance, the diarylphthalate is added to enhance adhesion stability by improving adhesion and toughness, the polyethylene glycol phenyl ether prevents the aggregation of particles and uniform It is added to ensure dispersibility and induce even distribution of the waterproofing components.

In addition, the BHT (Butylated HydroxyToluene) is added to prevent the deterioration of the adhesive force by inhibiting the phenomenon that the rubber component is naturally oxidized or aged by ultraviolet rays, heat or air.

In addition, the rosin is a pale yellow or brown transparent liquid remaining after distilling the rosin with water vapor to remove terebin oil, and is added to improve the applicability by adjusting the viscosity while enhancing the binding properties between components.

In addition, the paraffin wax is added to adjust the physical properties.

The ethylene vinyl acetate is a base resin obtained by mixing ethylene and a vinyl acetate monomer.

Meanwhile, in the present invention, as illustrated in FIGS. 8 to 9, the extinguishing fluid sprayer 400 is further provided at four corners of the terminal box 10.

The extinguishing fluid sprayer 400 is removable, for this purpose, a plurality of position fixing protrusions (DOL) protrude from each corner of the inside of the terminal box 10 at a predetermined interval from each other.

In addition, the extinguishing fluid sprayer 400 is formed in a 'b' shape and the inside of the nebulizer body 410, and formed at each end and corner of the nebulizer body 410 and the position fixing protrusion (DOL) is inserted Cover hole 420 is closed, a plurality of injection holes 430 formed in the inner surface of the sprayer body 410, and the cover 440 for sealing the opening (OPN) formed on the surface of the sprayer body 410 ) And a digestive fluid tube 450 embedded in the nebulizer body 410 through the opening part OPN.

At this time, the digestive fluid tube 450 is filled with a digestive fluid, the extinguishing fluid is 20% by weight of liquid carbon dioxide, 35% by weight of sodium bicarbonate, 10% by weight of ammonium phosphate, 5% by weight of allyl isothiocyanate and Consists of the remaining water.

In this case, the liquid carbonate gas promotes the digestive action according to the generation of carbon dioxide, sodium bicarbonate turns to sodium carbonate while releasing carbon dioxide when heated to 65 ℃ or more, and ammonium phosphate is a representative extinguishing agent Allyl isothiocyanate is rapidly volatilized and added to rapidly decompose and remove harmful gases generated in a fire.

Therefore, when a fire occurs inside the terminal box 10 and the heat rises, the extinguishing fluid tube 450 expands and explodes. At this time, the extinguishing fluid scatters through the injection hole 430 to extinguish the fire generated initially.

Here, the cover 440 is a full-sealed double jaw spaced around the opening (OPN), as shown, since the cover 440 must maintain a tight coupling that is completely sealed and not easily separated after charging the digestive fluid tube 450 (DT) is further formed, and the jaw fitting portion 442 is formed on the circumferential surface of the cover 440 to sandwich the jaw fitting portion 442 to be interposed between the daggers DT. It is possible to achieve a firm fixing structure by sandwiching and sticking in between.

In addition, as shown in Figure 10, the door (DR) of the terminal box 10, pests such as foreign objects or flies in the opening when the pests are killed or stuck to the terminal to prevent the short-circuit to prevent the short-circuit unit ( 500 may be further provided.

The pest blocking unit 500 includes a first insect repellent roll housing 500 that can be fitted to one side of the frame of the door DR.

At this time, the first insect repellent roll housing 500 is provided with a spiral spring or torsion spring so that the first insect repellent roll head 510 is installed to automatically retract the first insect repellent screen 520 in the form of a roll screen. .

In addition, the second insect repellent roll housing 600 that can be fitted to the other side of the frame of the door (DR).

At this time, the second insect repellent roll housing 600 is provided with a second insect repellent roll head 610 is provided with a spiral spring or a torsion spring to automatically retract the second insect repellent screen 620 in the form of a roll screen. .

In addition, a first connector C1 and a second connector C2 are provided at ends of the first insect screen 520 and the second insect screen 620, respectively.

In this case, the first connector (C1) and the second connector (C2) is formed to correspond to the upper and lower lengths of each screen to have a form in which each screen is fixed to each other, the surface facing each other permanent magnet, that is, the first The magnet MG1 and the second magnet MG2 are embedded to be disposed so as to generate mutual suction force.

Here, a spring (spiral spring or torsion spring) for introducing the first insect screen 520 and the second insect screen 620 into the first insect housing (500) and the second insect insect housing 600, respectively. The pulling force should be smaller than the suction force of the first magnet MG1 and the second magnet MG2.

In particular, the pest blocking unit 500 is installed on both sides of the inner peripheral frame of the door (DR) does not interfere at all to open and close the door (DR) provides a convenient advantage in use.

10: terminal box 11: base panel
12: branch circuit 13: switchgear
14: input terminal 15: output terminal
16: lead wire 17: lead wire

Claims (1)

An intermediate position between the base panel 11 made of an insulating material provided therein, the branch circuit 12 having the input terminal 14 and the output terminal 15 installed on the base panel 11, and the branch circuit 12. A switch 13 provided to connect or cut off the branch circuit 12, a lead wire 16 and a lead wire respectively connected to the input terminal 14 and the output terminal 15 formed on the branch circuit 12. A terminal box apparatus for a multi-unit electric house comprising a terminal box (10) having a (17);
The terminal box 10 is formed in a rectangular box shape having a door DR; Vent holes PA of the same size are formed in the upper front end and the lower end of the terminal box 10; The through hole 110 is formed in the center of the plate surface of the base panel 11; A plurality of insertion guide ribs 120 having a 'b' shape protrude from the rear surface of the base panel 11 at the center thereof; The fixing plate 130 is inserted into the insertion guide rib 120; A fixing groove 140 corresponding to the through hole 110 is formed at the center of the fixing plate 130. The upper arm 150 is integrally fixed to the rear surface of the fixing plate 130 to be perpendicular to the plate thickness direction; An upper joint 160 is fixed to an end of the upper arm 150; One end of the intermediate arm 170 is fixed to the upper joint 160; A lower joint 180 is fixed to the other end of the intermediate arm 170; An upper end of the lower arm 190 is fixed to the lower joint 180; A fixed base 200 is fixed to the other end of the lower arm 190; The fixed base 200 is fixed to the inner bottom surface of the terminal box 10 is configured to fold the base panel (11);
Four corners of the inside of the terminal box 10, the digestive fluid sprayer 400 is further installed; The extinguishing fluid sprayer 400 is formed in a 'b' shape and the interior of the empty nebulizer body 410, and formed at each end and corner of the nebulizer body 410, the hook fixed position (DOL) is inserted 420, a plurality of injection holes 430 formed on the inner surface of the sprayer body 410, a cover 440 for sealing the opening (OPN) formed on the surface of the sprayer body 410 and closed; It consists of a digestive fluid tube (450) embedded in the nebulizer body (410) through the opening (OPN);
A double stepped stone step DT is formed around the opening OPN, and a stepped part 442 fitted between the stepped parts DT is formed on the circumferential surface of the cover 440 to form an adhesive. The stone jaw fitting portion 442 is sandwiched between the stone jaws DT and interposed therebetween to be adhesively fixed;
The digestive fluid tube 450 is filled with a digestive fluid, the extinguishing fluid is 20% by weight of liquid carbon dioxide, 35% by weight of sodium bicarbonate, 10% by weight of ammonium phosphate, 5% by weight of allyl isothiocyanate, and the remaining water. Done;
The door DR is further provided with a pest blocking unit 500, wherein the pest blocking unit 500 includes a first insect repellent roll housing 500 that can be fixed to one side of the frame of the door DR, The first insect repellent roll housing 500 is provided with a first insect repellent roll head 510 is provided with a spiral spring or a torsion spring to automatically retract the first insect repellent screen 520 in the form of a roll screen, the door And a second insect repellent roll housing 600 which can be fixed to the other side of the frame. The second insect repellent roll head 600 is installed inside the second insect repellent roll housing 600 to form a roll screen. It is provided with a spiral spring or a torsion spring so that the second insect screen 620 can be automatically inserted, and the first connection port (C1) and the end of the first insect screen 520 and the second insect screen 620, respectively; A second connector C2 is provided, and the first connector C1 and the second connector C2 are each screen. It is formed to correspond to the upper and lower lengths of the screen has to have a form in which each screen is engaged to be fixed, the first magnet (MG1) and the second magnet (MG2) is embedded to face each other is disposed to create a mutual suction force;
The base panel 11 and the fixed base 200 are mixed with a first magnesium phosphate (Mg (H ₂ PO ₄ ) ₂ ) and the first aluminum phosphate (Al (H ₂ PO ₄ ) ₃ ) in a weight ratio of 1: 1. 15% by weight of the mixed solution, 6.5% by weight of propylene dicarboxylic acid for imparting anionic functionality to the inside and the surface of the polymer, 1.5% by weight of triglyceride for forming a film to increase surface smoothness and impart antifouling properties, and to prevent cracking and 3.5% by weight of coal tar to impart waterproof performance, 8.5% by weight of diaryl phthalate to improve adhesion and toughness, and 6.5% by weight of polyethylene glycol phenyl ether to prevent aggregation of particles and ensure uniform dispersibility. And a composition comprising 1.5 wt% of BHT (Butylated HydroxyToluene), 1.0 wt% of rosin, 1.0 wt% of paraffin wax, and the remaining ethylene vinyl acetate, which inhibit natural oxidation or aging. Terminal box device for apartment house electricity.

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