KR101246068B1 - Electric wiring box for deep deck plate - Google Patents

Abstract

PURPOSE: An electric wiring box for a deep deck capable of controlling height is provided to increase resistance to tensile strength, flexural strength and crack by inserting and combining a channel into a dovetail groove. CONSTITUTION: A coating layer(500) is formed with high tenacity mortar. The coating layer consists of constant thickness in the outer side of a body(100). The lower part of a height control member(200) is inserted into a space unit(120). The upper part of the height control member includes a support unit(210). The central part of the height control member includes a cover unit(220).

Description

Electric wiring box for deep deck with adjustable height {Electric wiring box for deep deck plate}

The present invention relates to an electrical wiring box for a deep deck that can be adjusted in height, and more particularly, to an electrical wiring box installed in an upper portion of a high dance deck and embedded in a slab and capable of height adjustment.

In order to prevent various electrical wiring to be exposed to the outside during construction, the electrical wiring box is embedded in a predetermined position in the formwork, and the wiring pipe is connected to the wiring pipe connector of each electrical wiring box.

However, when the electrical wiring box is installed inside the formwork and concrete is poured later, the concrete flows into the interior of the wiring box body, and there is a problem that a switch bundle and wiring cannot be easily performed later.

As a background art of this invention, Unexamined-Japanese-Patent No. 2008-0004392 is an "embedded electrical wiring box" (patent document 1).

In the background art, as shown in FIG. 4, in the electrical wiring box which is coupled to cover the cover 3 by the upper opening of the wiring box body 2, the bottom surface of the cover 3 is provided with a dolte insertion outlet 10. Formed integrally and inserted into the opening of the wiring box body 2; a plurality of couplings having the coupling holes 12 and 14 opposed to the inner surface of the plunger insertion hole 10 and the inner surface of the wiring box body 2; Spherical (11) and (13) formed; engaging holes (12) and (14) in the binding holes (11) and (13) of each of the opposing binding spheres so that the cover (3) is shot upward. Embedded electrical wiring box characterized in that. "Is proposed.

However, the background art is not possible to adjust the height of the electrical wiring box was not easy to be fixed and buried at the exact position when laying, there is a problem that the cracks around the slab is made of a metal material of plastic or thin plate.

Public utility model 2008-0004392 "Built-in electric wiring box"

The present invention is to solve the above problems, by fitting the channel into the dovetail groove formed in the upper part of the deep deck, not only easy to secure the electrical wiring box, but also increase the tensile strength, bending strength, resistance to cracking The purpose of the present invention is to provide an electrical wiring box for a deep deck that can easily adjust the height of the top by fixing the height adjusting member according to a binding groove having various heights inside the main body.

Another object of the present invention is to reinforce the upper flange of the deep deck to prevent buckling and lateral torsion, etc., and the height adjustable deep deck electrical wiring box that can prevent the spread of the deep deck due to the construction load The purpose is to provide.

The present invention relates to an electrical wiring box installed at an upper portion of a deep deck and embedded in a slab, the upper portion of which is formed in a space in the form of a space therein, and a plurality of wires for entering and entering the wires so as to communicate with the space portion at the side A main body having a wire through hole, formed around the inner surface, and having a plurality of binding grooves having a right triangle shape having a narrow upper portion and a wide lower portion at a predetermined interval; A coating layer formed of a high toughness mortar in which fiber reinforcing material is mixed and configured to have a predetermined thickness on an outer side of the main body, and having lattice-shaped reinforcing bars configured at upper and lower portions thereof so as to protrude end portions thereof; The lower part is configured to be inserted into the space part so as to cover the upper part of the space in the open box shape, the upper part is formed with a support portion of a predetermined interval from the outside to the center part, the cover part is configured to open and close at the center part, the lower part to the outside It is intended to provide a height-adjustable deep wiring electrical wiring box, characterized in that consisting of; height adjustment member configured to bind to the binding groove of the main body is formed so that the binding projection of the shape corresponding to the binding groove.

In addition, the coating layer is composed of a mortar containing 35 to 50% by weight of cement, 1 to 2% by weight of admixture, 35 to 45% by weight of fine aggregate, 0.5 to 1% by weight of PVA fiber reinforcement, and 13.5 to 17% by weight of the remaining compounded water. An object of the present invention is to provide an electrical wiring box for a deep deck with adjustable height.

In addition, the PVA fiber reinforcement is to provide a height-controlled deep deck electrical wiring box, characterized in that formed in a length of 3 ~ 8mm.

In addition, angles are respectively coupled to both ends of the lower portion of the main body and has a N-shaped cross section and embedded in the coating layer to protrude both ends; An opening having a rectangular cross section inside and having an opening formed in a longitudinal direction at the top thereof, the channel being coupled to the bottom at an angle protruding from the coating layer at regular intervals with the angle; It is to provide an electrical wiring box for a deep deck that can be adjusted in height.

The height-adjustable electric wiring box for deep deck of the present invention is connected to the dovetail groove formed in the upper part of the deep deck by combining the channel, so that the electric wiring box can be easily fixed, and the tensile strength, bending strength, and resistance to cracking can be achieved. There is a very useful effect that can be easily adjusted by fixing the height adjustment member according to the binding groove composed of various heights inside the body.

In addition, by reinforcing the upper flange of the deep deck can prevent buckling and lateral torsion, etc., there is an effect that can prevent the spread of the deep deck due to the construction load.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is an exploded perspective view of an electric wiring box for a deep deck capable of adjusting the height of the present invention.
Figure 2 is a cross-sectional view of the coupled state of the electrical wiring box for deep deck adjustable height of the present invention.
Figure 3 is a cross-sectional view showing an embodiment of a state in which a height-adjustable electric deck box for a deep deck of the present invention is coupled to the deep deck.
Figure 4 is an exploded perspective view showing a conventional embedded electrical wiring box.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

 Hereinafter, the technical structure of the present invention will be described in detail with reference to the preferred embodiments.

1 is an exploded perspective view of an electric wiring box for a deep deck capable of adjusting the height of the present invention.

As shown in Figure 1, the height-adjustable electrical wiring box 1 for the deep deck of the present invention is applied to the deep deck (deep deck) 10, is mounted on the top of the deep deck 10 is fixed .

The present invention provides a box-shaped main body 100 having a space 120 formed therein, a coating layer 500 formed to form a layer with a high toughness mortar with a predetermined thickness on the outside of the main body 100, and the main body 100. Consists of a height adjustment member 200 is configured to cover the top of the.

The main body 100 is formed in a box shape having an upper opening, and a space portion 120 is formed therein, and a plurality of wire through holes 130 for in and out of wires to communicate with the space portion 120 at a side surface thereof. ) Is configured.

The through hole 130 may be formed by inserting a pipe or a pipe into a hole for drawing or drawing wires from the outside or may be integrally formed with the main body 100.

The binding groove 140 is a portion in which the binding protrusion 240 of the height adjusting member 200 is supported, and is formed by forming a groove around the inner surface of the main body 100, and having a constant height on the inner surface of the main body 100. Depending on the number of installations.

The binding groove 140 has a shape having a groove having a cross section of a right triangle having a narrow upper portion and a wide lower portion.

The coating layer 500 is formed on the outer surface of the main body 100 to have a predetermined thickness.

When the electrical wiring box 1 is embedded in the slab, the electrical wiring box 1 has a weak structural strength compared to the other parts of the slab and the embedded parts are easily cracked. The main body 100 constituted has a problem in that its shape is easily deformed during construction. Therefore, the coating layer 500 is made of mortar.

In addition, the coating layer 500 is configured such that the lattice-shaped rebars 510 and 520 are embedded to protrude an end portion thereof. Reinforcing bars 510 and 520 are configured in a lattice shape and are configured such that the main body 100 is positioned at the center portion in plan view, and protrudes to the outer side of the coating layer 500. In this way, the adhesion force with the slab concrete is strengthened at the time of embedding in the slab so that cracks do not occur around the electrical wiring box 1.

The coating layer 500 is formed of high toughness mortar mixed with fiber reinforcement. This is because cement-based concrete, mortar, etc. are generally strong in compression but weak in brittleness, and condensation and hardening in a plastic fluid immediately after casting usually causes cracking due to shrinkage.

In addition, if the high toughness mortar containing the fiber reinforcement is not used, the thickness of the coating layer is inevitably formed, and when the thickness of the coating layer becomes thick, the slab effectively protrudes to the upper part of the deep deck 10. This results in loss of cross section.

High toughness mortar with fiber reinforcement is also called fiber reinforced concrete, and uniformly distributes various fibers in concrete for the purpose of increasing the tensile strength, bending strength, resistance to cracking, and improving toughness and impact resistance. Say what you made. Fibers used include steel fibers, glass fibers, carbon fibers, aramid fibers, polypropylene fibers, nylon, polyester, vinylon, and the like. The fiber used herein is different depending on the purpose of use, but in general, the adhesion between the fiber and the cement binder should be good, the tensile strength of the fiber should be high, and durability, heat resistance and weather resistance should be excellent. The modulus of elasticity of the fiber should be at least 1/5 of the modulus of elasticity of cement binder, and the aspect ratio should be at least 50. The principle is to use a forced mixer so that the fibers are evenly dispersed in the concrete when the fibers are fed into the mixer. It should be rubbed enough to get the desired quality, and the rubbing time is determined by testing. When used together with reinforced concrete, the shear strength of the member can be increased, so it is particularly effective for reinforced concrete structures that require earthquake resistance.

In addition, the mortar with the coating layer 500 blended with 35 to 50% by weight of cement, 1 to 2% by weight of admixture, 35 to 45% by weight of fine aggregate, 0.5 to 1% by weight of PVA fiber reinforcement, and 13.5 to 17% by weight of the remaining compounded water. Can be configured.

PVA fiber reinforcement is PVA (Polyvinyl Alcohol) fiber, has excellent dispersibility in concrete and mortar compared to conventional geotextiles, and has a high reinforcement component and is highly regarded as concrete and mortar fiber. More specifically, it is possible to use the RECS100L having an optimal three-dimensional array having excellent adhesion performance and excellent alkali resistance, impact resistance, and UV (ultraviolet) resistance with a chemical structure having a hydroxyl group (-OH).

PVA fiber is a polymer produced by polymerization of vinyl alcohol as a hydrophilic material having an OH- group. PVA is a compound produced by indirect methods such as modification of vinyl acetate having similar structure due to the instability of vinyl alcohol monomer. It has excellent chemical and physical adhesiveness, and its tensile strength is 900 ~ 1,600Mpa, which is very suitable for cement concrete reinforcement which requires high alkali resistance and high tensile strength.

0.5 to 1% by weight of the VA fiber reinforcement is mixed, but less than 0.5% by weight of the fiber reinforcement due to the crack control effect and deformation performance improvement effect such as bending is insufficient. If the total content of the fiber reinforcement exceeds 1% by weight, the fiber reinforcement is not uniformly dispersed in the cement composite composition, but rather increases the voids in the toughness mortar, so that the crack suppressing function does not appear, so 0.5 to 1 weight % Is preferably incorporated.

The PVA fiber reinforcement may be formed to a length of 3 to 8 mm. If the length of the PVA fiber reinforcement is less than 3 mm, the PVA fiber reinforcement does not disperse well in one place in the mortar, and if it exceeds 8 mm, the PVA fiber in the mortar is exceeded. The stiffeners may be entangled with each other and insufficiently dispersed. That is, in both cases, the dispersibility of the fiber reinforcing material is lowered, which may lower the performance of the coating layer 500.

An upper portion of the main body 100 is opened to form a space 120 therein, and the height adjusting member 200 is fitted to the upper portion of the main body 100 so as to cover the upper portion of the space 120.

Height adjustment member 200 is a box shape of the lower opening is inserted into the space portion 120 inside the lower end of the opening of the main body 100 is adjusted and fixed to the required height.

The height adjustment member 200 is coupled to the lower end portion is introduced into the space portion 120 of the main body 100, the binding protrusion 240 configured at the lower end is bound to the binding groove 140 in the main body 100 is coupled. do.

At this time, since the binding groove 140 is composed of a plurality according to the height at a predetermined interval of the side of the main body 100, the binding projection 240 is to be fixed to the binding groove 140 in the required height. will be.

Figure 2 is a cross-sectional view of the coupled state of the electrical wiring box for deep deck adjustable height of the present invention.

As shown in FIG. 2, the binding protrusion 240 is supported by the wide lower jaw 141 of the binding groove 140 of the main body 100 so that the height adjusting member may be loaded even when the load is applied from the upper portion of the height adjusting member 200. Do not allow 200 to enter the inside of the main body 100 anymore. In addition, when the height adjusting member 200 is fixed, after inserting the lower end of the height adjusting member 200 so that the binding protrusion 240 of the height adjusting member 200 is located at the bottom of the main body 100, the height adjusting member ( When the withdrawal of the upper portion 200, the binding protrusion 240 is fitted into the lowermost binding groove 140, and if it is to be withdrawn again, the binding protrusion 240 along the inclined surface 142 of the binding groove 140. When the contraction moves inward and reaches the binding groove 140 at the next height, the binding protrusion 240 is expanded and fitted into the binding groove 140.

The binding protrusion 240 may form a protrusion to protrude outward from the lower end of the height adjusting member 200, or may be formed to protrude by bending the lower end of the height adjusting member 200.

The body 100 and the height adjusting member 200 may be made of a plastic or metal material.

When the dovetail grooves 12 are formed in the upper flange 11 of the deep deck 10 so that the grooves face downward, the angle 300 is disposed at the bottom of the main body 100 so that the dovetail grooves 12 may be inserted into and fixed to the dovetail grooves 12. And the channel 400 may be configured.

The angle 300 is respectively coupled to both ends of the lower portion of the main body 100 is embedded in the coating layer 500 is configured to protrude both ends, the channel 400 is in the lower portion of the angle 300 protruding from the coating layer 500 At right angles with the angle 300, the two are configured to be coupled at a predetermined interval.

In this manner, the channel 400 is fixed to the dovetail groove 12 of the deep deck 10.

Angle 300 has a cross-section is composed of a c-shape, is coupled to the lower end of the main body 100 so that the two face each other.

Coupling of the body 100 and the angle 300 may be combined using a variety of known methods such as welding, bolt bonding, adhesive.

The angle 300 serves to support the main body 100, supports the main body 100 to which the height adjusting member 200 is coupled, and both ends of the angle 300 have an upper flange 11 of the deep deck 10. I play a role to hang over.

At this time, the channel 400 is configured at the lower portion of the angle 300 to be coupled to the angle 300 at a right angle to each other.

Figure 3 is a cross-sectional view showing an embodiment of a state in which a height-adjustable electric deck box for a deep deck of the present invention is coupled to the deep deck.

As shown in FIG. 3 (a), the reinforcing bars 510 and 520 are configured at the upper and lower portions of the coating layer 500, respectively, and the reinforcing bars 510 and 520 formed at the upper and lower parts both serve to prevent cracking. However, in particular, the reinforcing bar 510 is configured to be over the upper reinforcing bar 13 is configured in the upper portion of the deep deck 10 to secure the electrical wiring box (1) can be overhang construction.

In this way, it can be fixed and mounted anywhere on the upper part of the deep deck 10 such as the upper part of the upper flange 11 or the upper part of the upper flange 11 and the upper valley of the upper flange 11.

As shown in FIG. 3 (b), in the configuration in which the angle 300 and the channel 400 are added, the channel 400 is fitted into and fixed to the dovetail groove 12 formed in the upper flange 11 of the deep deck 10. do.

The length of the channel 400 may be formed in various ways or more than the length connecting the both ends of the angle (300).

The electrical wiring box 1 is located between the upper flange 11 of the deep deck 10 and the adjacent upper flange 11. This is because the effective cross section is lost when positioned above the upper flange.

The configuration of the channel 400 at the end of the angle 300 is such that when only the end of the angle 300 spans the upper flange 11, the load is concentrated at the end of the angle 300 so that This is because the upper flange 11 can be deformed.

The channel 400 serves to fix the height of the deep deck electrical wiring box 1, which can be adjusted in height, and serves to reinforce the deep deck 10.

The deep deck generally has a dance of 250mm, and is composed of thin plates of 1.0 to 1.6mm in thickness, so that the width-thickness ratio is large. When rising or construction loads, the primary sag occurs in the upper flange surface of the deep tech 12, buckling or lateral torsion occurs.

Therefore, by inserting and reinforcing the channel 400 in the dovetail groove 12, deformation of the lateral twist, buckling and the like of the deep deck 10 having a high dance is prevented. In addition, the spreading of the deep deck 10 due to the construction load can be prevented.

The channel 400 is fixed to the dovetail groove 12 by pressing. Since the dovetail groove 12 has a narrow inlet and a wide inside, the dovetail groove 12 fixes the channel 400 to the dovetail groove 12 by forcing the channel 400 into the narrow inlet of the dovetail groove 12.

The cross-sectional shape of the channel 400 may be manufactured in various forms that can be fitted into the dovetail groove 12, and should have a wider width than the entrance of the dovetail groove 12.

In addition, the channel 400 may have a rectangular cross section with an empty inside, and may have an opening 410 formed in a longitudinal direction thereon. The opening 410 is formed in the upper portion of the channel 400 when the channel 400 is fixed to the dovetail groove 12 by forcing the channel 400 into the narrow inlet of the dovetail groove 12. This is to induce deformation while the gap between the openings 410 becomes narrower. As such, when the side of the channel 400 is narrowed and fitted into a shape, the channel 400 is fixed to the dovetail groove 12 more firmly by the restoring force.

As described above, the height-adjustable deep deck electrical wiring box of the present invention is connected to the dovetail groove formed in the upper portion of the deep deck by fitting a channel, thereby easily fixing the electrical wiring box, as well as tensile strength and flexural strength. It is possible to increase the resistance to cracking, and has a very useful effect of easily adjusting the height of the top by fixing the height adjustment member according to the binding groove composed of various heights inside the body.

In addition, by reinforcing the upper flange of the deep deck can prevent buckling and lateral torsion, etc., there is an effect that can prevent the spread of the deep deck due to the construction load.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

1: electrical wiring box
10: deep deck
11: upper flange
12: Dovetail Home
100; main body
120: space part
130: through hole
140: binding groove
200; Height adjustment member
210: support part
220: cover part
240: binding protrusion
300: angle
400: channel
410: opening
500: coating layer
510, 520: rebar

Claims (4)

In the electrical wiring box is installed on the top of the deep deck 10 and embedded in the slab,
A space 120 is formed inside the box shape with an upper opening, and a plurality of wire through holes 130 for in and out of the wire are configured to communicate with the space 120 at the side surface. A main body 100 having a plurality of binding grooves 140 having a rectangular triangle shape having a narrow upper portion and a wide lower portion thereof at regular intervals;
It is formed of a high toughness mortar mixed with a fiber reinforcement is composed of a predetermined thickness on the outside of the main body 100, the lattice-shaped reinforcement (510) 520, the coating layer 500 is respectively configured on the top and bottom so that the end is protruded and;
The lower portion is formed by inserting the lower portion into the space portion 120 to cover the upper portion of the space portion 120 in an open box shape, the upper portion of the support portion 210 is formed at a predetermined interval from the outside to the center portion and the center portion can be opened and closed. Cover portion 220 is configured so that, the lower end protruding outward height adjustment member is formed with a binding projection 240 of the shape corresponding to the binding groove 140 to be bound to the binding groove 140 of the main body 100 200 is an electrical wiring box for a deep deck capable of adjusting the height, characterized in that consisting of. The method according to claim 1,
The coating layer 500 is composed of a mortar of 35 to 50% by weight of cement, 1 to 2% by weight of admixture, 35 to 45% by weight of fine aggregate, 0.5 to 1% by weight of PVA fiber reinforcement, and 13.5 to 17% by weight of the remaining compounded water. An electric wiring box for a deep deck, the height of which is adjustable. The method according to claim 2,
PVA fiber reinforcement is a deep deck electrical wiring box, characterized in that the length is formed of 3 ~ 8mm. The method according to claim 1 or 2,
An angle 300 coupled to both ends of the lower part of the main body 100 and having an N-shaped cross section and embedded in the coating layer 500 to protrude both ends thereof;
Opening 410 is formed in the longitudinal direction at the top with an empty rectangular cross section inside, and two are spaced apart at right angles from the angle 300 at a lower portion of the angle 300 protruding from the coating layer 500. Channel 400, which is a height-adjustable deep deck electrical wiring box, characterized in that the additional configuration.

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