KR102246276B1 - Building trench for distribution lines with short circuit prevention function - Google Patents

Abstract

The present invention relates to a building trench having a function of short circuit prevention for distributions lines, which comprises: a trench main body (10) installed on a ceiling, a wall surface and the like of a building to support installed distribution lines (L); a line connecting assembly (20) installed detachably on the trench main body (10) to electrically connect the distribution lines (L) to one another and fix the same; and a cover (30) joined detachably to the upper part of the trench main body (10) to block access of the unauthorized. According to an embodiment of the present invention, when distribution lines are introduced between elastic ribs for installation, the elastic ribs which are bent due to the distribution lines pressurize and confine the distribution lines by means of elastic force, thereby allowing stable confinement of distribution lines. Furthermore, confinement of distribution lines maximizes inhibition of contacts between the distribution lines, thereby minimizing the chance of short circuits caused by contacts between the distribution lines. In particular, when the distribution lines are introduced between elastic ribs for installation, a line holder made of a rubber is used to prevent damage to the coating on the distribution lines.

Description

Building trench for distribution lines with short circuit prevention function}

The present invention relates to a building trench for distribution lines with a short-circuit prevention function, and more particularly, it is possible to improve the continuity and safety of the electrical connection state by mitigating the deflection of the temporary electrical distribution line, and short circuit due to contact between the distribution lines. It relates to a building trench for distribution lines with a short-circuit prevention function that can prevent this.

Due to the increase in population, housing, work, and living spaces are relatively reduced, and apartments and large-sized buildings are increasing. These buildings are fully equipped indoors and are very convenient to use. It is becoming a form.

In general, wiring such as many wires or telephone lines is complicatedly installed in the interior of a building to use various electronic devices.

Conventionally, only electric wires had to be wired when constructing buildings, but recently, with the diversification and high-speed use of media, installation of various weak electric wires excluding electric wires such as telephone lines, high-speed Internet dedicated lines, and distribution lines for CATV/MATV has been required to construct buildings. To this end, communication EPS rooms or PITs are provided for each floor, and a trench for distribution lines is used for wiring.

These trenches for distribution lines are composed of side rails and rungs, and the rungs are installed on side rails at regular intervals to support electric distribution lines.

However, since the rung and the rung are separated from each other, sagging is likely to occur in the temporary distribution line. Accordingly, when the distribution lines are interconnected, a load (tensile force) is applied to the connection part, so the fixedness and safety are weakened, and the connection part is reduced. There was a problem that it was easily disconnected.

In addition, in the case of a conventional trench, it is difficult to secure the fixedness of the distribution line because the distribution line is simply installed in a form in which the rung is placed, and there is a problem in that a short circuit is caused due to contact of the distribution line.

Therefore, research to solve this problem is still actively underway.

1. Korean Patent Registration No. 10-2114816 (2020.05.25)

The present invention has been devised to solve the above problems, and it is possible to further improve the continuity and safety of the electrical connection state by mitigating the sag of the installed electric distribution line, and to prevent a short circuit due to contact between the distribution lines, Installation and electrical connection are possible without removing the cover of the electric distribution line, which greatly improves the convenience of work, and since the lead wire and the coating are constrained to the needle, it is possible to secure the separation of the electric distribution line more reliably. The purpose of this is to provide a building trench for distribution lines with a short-circuit prevention function that naturally seals as it wraps the penetrating needle.

The present invention for achieving the above object,

Insulates and supports a rung with side rails spaced side by side and a first coupling hole formed at regular intervals along the length direction of the rung fixed to the inner surface of the side rail and the distribution line installed and seated on the upper surface of the rung. The insulation pad is arranged in a row along the longitudinal direction of the upper surface of the insulation pad, and the wire holder is made of elastic threads that restrict movement by elastically pressing the distribution line intervening therebetween, and the wire holder is inserted through the first coupling hole in the longitudinal direction of the side rail. A slide bar that moves forward and backward, a support member integrally formed at one end of the slide bar to support the distribution line, a soft insulating block installed on the upper surface of the support member, and a stopper that is removably fastened to the end of the slide bar to prevent separation from the rung The trench body consisting of an electric wire support made of;

Constrained by a slide bar that is detachably coupled to the rung so that the inner surface of the rung faces the upper surface of the insulation pad and the both sides of the rung with a second coupling hole that communicates with the first coupling hole, and is inserted through the first and second coupling holes. The'C' shaped bracket is divided into a first body part and a second body part having a semicircular cross section, and are connected to each other through a hinge, but the first body part is a tubular shape integrally formed on the upper surface of the bracket. The main body of the main body and the distribution line are inserted through both ends of the main body so that it is removably accommodated inside the main body, and the outer circumferential surfaces of both ends are integrally formed with disk-shaped plunges disposed at both ends of the main body, and the length of the outer circumferential surface between the plunges Distribution line sockets made of insulating material, which are arranged in a row at regular intervals along the direction, so that the through holes communicating with the inside face each other, a packing material with elasticity formed on the inner surface of the body, and the distribution line sockets face each other. Arranged and intervened between the distribution line socket and the packing material, the inner circumferential surface is in close contact with the outer circumferential surface of the distribution line socket by the pressurization of the main body, and the outer circumferential surface has a semicircular cross-section in close contact with the inner circumferential surface of the packing material, protruding from the inner circumferential surface of the arc plate, and through hole A connector made of conductive material that connects the distribution lines electrically to each other, and is installed in the main body to regulate the rotation of the first and second body parts. Distribution line connection assembly consisting of a locking mechanism;

It characterized in that it comprises a; a cover that is detachably coupled to the trench body to cover the side and the upper portion in the longitudinal direction, and provided with a transparent window on the upper surface so that the inside of the trench body can be viewed from the outside.

According to this embodiment, when sagging of a distribution line is expected or sagging of a distribution line occurs, it is only necessary to support the distribution line by moving the electric wire bracket installed movably on the rung forward and backward, so that the sagging of the installed distribution line can be alleviated, and accordingly, electrical connection There is an advantage that can further improve the persistence and safety of the state.

In addition, when the distribution line is inserted between the elastic ribs for the construction of the distribution line, the elastic ribs that have been bent by the distribution line pressurize and hold the distribution line through the elastic force, so that the distribution line can be stably detained. As the distribution line is detained, the contact between the distribution lines is prevented. As it can be suppressed as much as possible, the cause of short circuit occurrence due to contact between distribution lines can be minimized.In particular, when the distribution line is inserted through the elastic ribs, the cable holder is made of rubber, so it is possible to prevent damage to the cover of the distribution line. .

In addition, since the distribution lines can be individually separated and fixed by means of the elastic meat, it is possible to easily find the distribution lines during maintenance work, and a side effect of dramatically shortening the working time can be expected.

In addition, as the lancet of the wire connection assembly penetrates the sheath of the distribution line and is plugged into the wire, even if an external force (tensile force) acts on the distribution line, it is possible to suppress the separation to the outside as much as possible. Since the movement is restricted, the deviation of the distribution line can be further suppressed.

Furthermore, when the lancet penetrates the sheath, a side effect of sealing while the circumferential surface of the lancet is naturally wrapped by the sheath can be expected.

1 is a perspective view of a building trench for a distribution line with a short circuit prevention function according to the present invention.
Figure 2 is an exploded perspective view of a building trench for a distribution line with a short circuit prevention function according to the present invention.
3A and 3B are an exploded perspective view and a combined cross-sectional view showing a separate excerpt of a distribution line connection assembly from a distribution line building trench having a short circuit prevention function according to the present invention.
4A to 4D are views sequentially showing a process of connecting a distribution line using a building trench for a distribution line having a short circuit prevention function according to the present invention.
5A and 5B are views for explaining the operation of a building trench for a distribution line having a short circuit prevention function according to the present invention.
6 is a view for explaining another operation of the building trench for a distribution line with a short circuit prevention function according to the present invention.

Hereinafter, it will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a building trench for a distribution line with a short circuit prevention function according to the present invention, Figure 2 is an exploded perspective view of a building trench for a distribution line with a short circuit prevention function according to the present invention, and Figures 3a and 3b are in accordance with the present invention. This is an exploded perspective view and a combined cross-sectional view showing a separate excerpt of a distribution line connection assembly from a distribution line building trench with a short circuit prevention function.

1 to 3B, a building trench for a distribution line with a short circuit prevention function according to the present invention is composed of a trench body 10, a wire connection assembly 20, and a cover 30, whereby the distribution line L In addition to being able to easily and conveniently install the installed distribution line (L), it is possible to further improve the continuity and safety of the electrical connection state by mitigating the sag of the installed distribution line (L), and prevent a short circuit due to contact between the distribution lines (L). Installation and electrical connection is possible without removing the cover (Lb) of the distribution line (L), which greatly improves the convenience of work, and it is a structure in which the lead (La) and the cover (Lb) are constrained to the needle (25b) together. It is possible to secure the separation of the distribution line (L) more reliably, and there is a technical feature of sealing naturally as the cover (Lb) covers the penetrating needle (25b).

Referring to FIGS. 1 and 2, the trench body 10 serves to support a distribution line L installed by being installed on a ceiling or a wall surface of a building.

This trench body 10 is composed of a side rail 11 and a rung 12, an electric wire holder 13, and an electric wire holder 14.

The side rails 11 are arranged side by side and spaced apart and installed on the ceiling or wall of a building through a fixing means (eg, anchor bolt).

The rung 12 is disposed between the side rails 11 so that both ends face the inner surface of the side rail 11 and is fixed to the side rail 11 through a fastening means (eg, screw bolt).

In addition, both sides of the rung 12 are formed to pass through the first coupling holes 12a at regular intervals along the longitudinal direction, and the first coupling holes 12a include slide bars 14a of the wire stand 14. ) Is inserted through.

The wire cradle 13 is composed of an insulating pad 13a and an elastic thread 13b, and in this embodiment serves to insulate and hold the distribution line L installed and installed on the upper surface of the rung 12. .

The insulating pad (13a) is a member having elasticity having a predetermined width and thickness, and is installed on the upper surface of the rung (12) to support the temporary distribution line (L) and insulate not to come into contact with the metal rung (12). Plays a role.

The elastic flesh (13b) is a member of an elastic material that is integral with the insulating pad (13a), and is arranged in multiple rows along the longitudinal direction of the upper surface of the insulating pad (13a) to elastically press the outer circumferential surface of the power distribution line (L) drawn into the inside. It serves to fix the distribution line (L) and limit its movement.

As an example, the distribution line L is placed on the insulating pad 13a during construction to insulate and support it, and the elastic meat 13b elastically presses the outer circumferential surface of the distribution line L to restrict movement. Since the contact can be suppressed as much as possible, there is an advantage of preventing and minimizing the occurrence of a short circuit due to contact between the distribution lines L.

The wire stand 14 is composed of a slide bar 14a, a support member 14b, an insulating block 14c, and a stopper 14d. It plays a role of suppressing slip generation while preventing sagging of the distribution line (L).

The slide bar (14a) is inserted into the first coupling hole (12a) to move forward and backward, and serves to move the support member (14b) along the longitudinal direction of the side rail (11).

The support member 14b is a plate having a predetermined width and thickness, and is integrally formed at one end of the slide bar 14a to support the temporary distribution line L to prevent sagging of the distribution line L. .

The insulating block 14c is a soft member having a certain frictional force, such as rubber or silicone, and serves to support the distribution line L installed on the upper surface of the support member 14b so that it does not slip.

For example, when the distribution line L is seated on the insulation block 14c, the insulation block 14c is deformed by the self-weight of the distribution line L to stably support the distribution line L as well as a constant frictional force. It is equipped with, it is possible to limit the movement of the distribution line (L) in the longitudinal direction.

The stopper 14d is a type of screw bolt, which is detachably fastened to the other end of the slide bar 14a, and serves to regulate the slide bar 14a from being separated from the rung 12. That is, if the stopper 14d is separated from the slide bar 14a, the slide bar 14a can be separated (separated) from the rung 12, but in a state where the stopper 14d is coupled to the slide bar 14a, Since the stopper 14d is caught on the rung 12, the slide bar 14a cannot be separated (separated) from the rung 12.

As an example, a distribution line (L) is placed on the rung (12) of the trench body (10) to be supported, and the distribution line (L) is sagging due to the distance between the rung (12) and the rung (12). It is easy to do, and accordingly, when the distribution lines (L) are interconnected via the wire connection assembly (20), a load (tensile force) is applied to the connection part, thus weakening the fixability and safety of the connection of the distribution line (L). there is a problem.

Accordingly, when the electric wire support 14, which is movably installed on the rung 12, is moved through the slide bar 14a so that the support member 14b is positioned in the middle between the rungs 12, the support member 14b ) Supports the distribution line L so that it does not sag, so that the above-mentioned problem can be fundamentally solved, thereby ensuring the stability and safety of the connection.

1 to 3B, the wire connection assembly 20 includes a bracket 21 and a main body 22, a distribution line socket 23, a packing material 24, a connector 25, and a locking mechanism 26. As configured, in the case of the present embodiment, it is detachably installed in the trench body 10 and serves to electrically interconnect and fix the distribution line L.

The bracket 21 is a member that has a'U' shape as a whole and has a second coupling hole 21a communicating with the first coupling hole 12a, and in the case of the present embodiment, the upper surface of the insulating pad 13a It is constrained by a slide bar 14a that is detachably coupled to the rung 12 so as to face both sides of the rung 12 and is inserted through the first and second coupling holes 12a and 21a.

For example, in the case of separating the bracket 21 from the rung 12, the stopper 14d fastened to the slide bar 14a is first separated and then inserted into the first and second coupling holes 12a, 21a. When the slide bar (14a) is separated from the first and second coupling holes (12a, 21a), it is possible to separate the wire stand (14) from the rung (12).

The main body 22 is a member integrally formed with the bracket 21, and is divided into a first body part 22a and a second body part 22b having a semicircular cross section, and is formed into a hinge (see FIGS. 4C and 4D). ) Are connected to each other, and have a structure in which the hinge is rotated and opened, or constricted to form a tubular shape. In addition, a semicircular plunge portion 22c extends toward the center on the inner circumferential surfaces of both ends of the first body portion 22a and the second body portion 22b, so that the packing material 24 and the connector 25 are accommodated inwardly. ) To limit the deviation. Here, the first body portion 22a is integrally formed on the upper surface of the bracket 21.

The distribution line socket 23 is a member of a cylindrical insulating material that is divided into space by a partition plate 23c integrally formed in the interior and is opened at both ends with respect to the partition plate 23c. Even if (L) is inserted, they are not electrically contacted with each other due to the dividing plate 23c. In addition, disk-shaped plunges 23a are integrally formed on the outer circumferential surfaces of both ends of the distribution line socket 23, and are arranged in a line at regular intervals along the length direction of the outer circumferential surface between the plunges 23a, and each of the inner and The through holes 23b communicated are formed to face each other. Here, the plunge (23a) is disposed outside the plunge portion (22c) provided at both ends of the body (22) serves to limit the movement of the body (22), the through hole (23b) is a connector (25) ) Serves to guide the Shanghai East to the lancet (25b).

The packing material 24 is a soft and elastic member such as silicone, rubber, etc., and is attached to the inner surface of the main body 22 in the case of this embodiment, and is airtight to the circumferential surface of the connector 25 when the main body 22 is pressed. It is closely adhered to and prevents the inflow of infiltrating water from the outside.

The connector 25 is a member of a conductive material composed of an arc plate 25a and a needle 25b. In the case of this embodiment, it is intervened between the distribution line socket 23 and the packing material 24, and is It is moved by the electric power distribution line L and plays a role of suppressing the separation of the distribution line L while electrically interconnecting the distribution line L. The arc plate 25a is a member having a semicircular cross section, and is disposed opposite to each other based on the distribution line socket 23 and intervenes between the distribution line socket 23 and the packing material 24, and the arc plate 25a arranged in this way By pressing the silver body 22, the inner circumferential surface is in close contact with the outer circumferential surface of the distribution line socket 23, and the outer circumferential surface is in close contact with the inner circumferential surface of the packing material 24. The needle (25b) is a conical member, protruding from the inner circumferential surface of the arc plate (25a) and fitted to the through hole (23b) so as to be lifted, and penetrated together by the movement of the arc plate (25a) by pressing the body (22). It moves along the hole 23b, penetrates the sheath (Lb) of the distribution line (L), and is inserted into the wire (La), thereby electrically interconnecting the distribution line (L) and biting and fixing the distribution line (L). do.

For example, when the connector 25 is pressed with the main body 22 in the state where the distribution line L is inserted into the distribution line socket 23, bleeding is caused by the movement of the arc plate 25a by the pressurization of the main body 22. (25b) naturally moves, and the needle (25b) is moved along the through hole (23b) and penetrates the sheath (Lb) of the distribution line (L) to be inserted into the conductor line (La). The conducting wire La of (L) is electrically connected to each other through the needle 25b and the arc plate 25a. In addition, as the needle 25b penetrates the sheath (Lb) of the distribution line (L) and is inserted into the conductor line (La), even if an external force (tensile force) acts on the distribution line (L), it is possible to minimize the separation to the outside. In addition, since the covering Lb limits the movement of the distribution line L together with the needle 25b, the separation of the distribution line L can be further suppressed. In addition, when the needle 25b penetrates the covering Lb, a side effect of sealing while the circumferential surface of the needle 25b is naturally wrapped by the covering Lb can be expected.

The locking mechanism 26 is a known coupling device that regulates the rotation of the first and second body parts 22a and 22b, and a hook-shaped hook 26a is installed on the outer circumferential surface of the first body 22a, A fastening portion 26b is installed on the outer circumferential surface of the second body portion 22b, and since this locking mechanism 26 is a technique well known in the art, further detailed description will be omitted.

Referring to FIG. 1, the cover 30 is a member having a'U' shape as a whole, and in this embodiment, it is detachably coupled through the upper portion of the trench body 10 to block contact with outsiders. .

A transparent window 31 is formed on the upper surface of the cover 30 so that the inside can be checked from the outside, and the administrator can check the relevant pipe without opening and closing the cover 30 through the transparent window 31. Very useful poem.

4A to 4D are views sequentially showing a process of connecting a distribution line using a building trench for a distribution line having a short circuit prevention function according to the present invention, and will be described with reference to this.

Referring to FIG. 4A, first, the distribution line L covered with the covering Lb to the end of the conducting line La is pushed inward through both ends of the distribution line socket 23.

4B and 4C, when the distribution line L is inserted into the distribution line socket 23 as described above, the connector 25 is disposed on the outer circumferential surface of the distribution line socket 23, respectively, and the lancet 25b of the connector 25 ) Is inserted into the through hole 23b, and the distribution line socket 23 is inserted into the inside of the first body portion 22a constituting the main body 22.

When the distribution line socket 23 is inserted into the first body portion 22a as described above, the open second body portion 22b is rotated through the hinge to press the connector 25.

At this time, the arc plate 25a is moved by the pressure of the main body 22, and the needle 25b is also moved along the through hole 23b by the movement of the arc plate 25a to cover the distribution line L. Through Lb, it is plugged into the conducting wire La, and accordingly, the conducting wire La of the distribution line L is electrically connected to each other through the needle 25b and the arc plate 25a.

Referring to FIG. 4D, when the ends are abutted to each other by being rotated around the hinge as described above, the main body 22 consists of a locking mechanism 26 composed of a hook 26a and a fastening portion 26b formed on the outer circumferential surface of the main body 22. You can fix it so that) does not open.

When the connection work of the distribution line L is completed as described above, as shown in FIG. 1, the cover 30 is covered on the trench body 10.

5A and 5B are views for explaining the operation of a building trench for a distribution line having a short circuit prevention function according to the present invention, and will be described with reference to this.

On the other hand, as shown in FIG. 5A, the distribution line L is placed on the rung 12 of the trench body 10 to be supported, and since the rung 12 and the rung 12 are separated from each other, the distribution line ( It is easy to sag in L), and as a result, a load (tensile force) is applied to the connection part of the distribution line (L) interconnected via the wire connection assembly (20), so the fixation and safety of the connection of the distribution line (L) Will weaken.

In the case of sagging of the distribution line L as described above, as shown in FIG. 5B, the support member 14b is moved by moving the electric wire support 14 movably installed on the rung 12 through the slide bar 14a. ) To be located in the middle between the rungs 12, the support member 14b and the insulating block 14c support the distribution line L so that it does not sag, so that the connection can be secured and secured. In addition, when the distribution line L is seated on the insulation block 14c, the insulation block 14c is deformed by the self-weight of the distribution line L, stably supporting the distribution line L, as well as providing a certain frictional force. Equipped with it, it is possible to limit the movement of the distribution line (L) in the longitudinal direction.

6 is a view for explaining another operation of a building trench for a distribution line having a short circuit prevention function according to the present invention, and will be described with reference to this.

When the connection work of the distribution line L by the wire connection assembly 20 is completed, other distribution lines L are also installed in the trench body 10.

To explain this in more detail, when it is inserted between the elastic ribs 13b for the construction of the distribution line L, the elastic ribs 13b bent by the distribution line L press the distribution line L through the elastic force. The distribution line (L) can be stably detained because it is detained. In particular, when the distribution line (L) is inserted through the elastic ribs (13b), the cable holder (13) is made of rubber. It is possible to prevent damage to the coating.

In addition, as the elastic flesh 13b elastically presses the outer circumferential surface of the distribution line L to limit its movement, the contact between the distribution lines L can be suppressed as much as possible, thus minimizing the cause of the occurrence of a short circuit due to contact between the distribution lines L. There is an advantage to be able to do.

In addition, since the distribution line (L) can be individually separated and fixed via the elastic ribs (13b), it is possible to easily find the distribution line (L) during maintenance work, which is an additional accessory that can significantly shorten the working time. The effect can also be expected.

According to this embodiment, when sagging of the distribution line (L) is expected or when sagging of the distribution line (L) occurs, by moving the electric wire stand 14 movably installed on the rung 12 forward and backward to support the distribution line L Therefore, it is possible to alleviate sagging of the hypothesized distribution line L, and accordingly, there is an advantage that the continuity and safety of the electrical connection state can be further improved.

In addition, when the distribution line (L) is inserted between the elastic ribs (13b) for the construction of the distribution line (L), the elastic rib (13b), which was bent by the distribution line (L), presses the distribution line (L) by means of an elastic force and is held therein. (L) can be stably detained, and as the distribution line (L) is detained, the contact between the distribution lines (L) can be suppressed as much as possible, thus minimizing the cause of a short circuit caused by contact between the distribution lines (L). When the distribution line L is inserted between the elastic ribs 13b to be installed, since the electric wire holder 13 is made of a rubber material, it is possible to prevent damage to the distribution line L.

And since the distribution line (L) can be individually separated and fixed through the elastic ribs (13b), it is possible to easily find the distribution line (L) during maintenance work, thereby significantly shortening the working time. You can also look forward to it.

In addition, even if an external force (tensile force) acts on the distribution line (L) as the needle (25b) of the wire connection assembly (20) penetrates the sheath (Lb) of the distribution line (L) and is plugged into the conductor (La). Departure to the outside can be suppressed as much as possible, and furthermore, since the cover Lb restricts the movement of the distribution line L together with the needle 25b, the separation of the distribution line L can be further suppressed.

Furthermore, when the needle 25b penetrates the covering Lb, a side effect of sealing while the circumferential surface of the needle 25b is naturally wrapped by the covering Lb can be expected.

The present invention has been described in detail only with respect to the described specific embodiments, but it is natural for those skilled in the art that various modifications and modifications can be made within the scope of the technical idea of the present invention, and it is natural that such modifications and modifications belong to the appended claims.

10: trench body 11: side rail 12: rung
12a: first coupling hole 13: wire holder 13a: insulation pad
13b: elastic thread 14: distribution line support 14a: slide bar
13b: support member 14c: insulating block 14d: stopper
20: distribution line connection assembly 21: bracket 21a: second coupling hole
22: body 22a: first body portion 22b: second body portion
22c: plunge portion 23: distribution line socket 23a: plunge
23b: through hole 23c: partition plate 24: packing material
25: connector 25a: plate 25b: lancet
26: locking mechanism 26a: hook 26b: fastening portion
30: cover 31: transparent window

Claims (1)

A rung 12 and a rung having a side rail 11 spaced side by side and a first coupling hole 12a formed at regular intervals along the length direction and fixed to the inner surface of the side rail 11 The insulation pad 13a that insulates and supports the distribution line L installed and seated on the upper surface of (12), and the distribution line L intervening through the insulation pad 13a are arranged in multiple rows along the longitudinal direction of the top surface of the insulation pad 13a. An electric wire cradle (13) made of elastic ribs (13b) that restrict movement by pressing, and a slide bar (14a), which is inserted through the first coupling hole (12a) to move forward and backward in the longitudinal direction of the side rail (11), and a slide The support member 14b that is integrally formed at one end of the rod 14a to support the distribution line L, the soft insulating block 14c installed on the upper surface of the support member 14b, and the end of the slide rod 14a. A trench body 10 composed of a wire stand 14 made of a stopper 14d that is detachably fastened so as not to be separated from the rung 12;
Equipped with a second coupling hole (21a) that communicates with the first coupling hole (12a), the inner surface of the rung (12) and the upper surface of the insulating pad (13a) are detachably coupled to the rung (12) so that the inner surface is abutted. The bracket 21 of the'U' shape, which is constrained by the slide rod 14a inserted through the first and second coupling holes 12a and 21a, and the first body portion 22a having a semicircular cross section, Each of the second body portion (22b) is divided and formed mutually coupled via a hinge, but the inner circumferential surface of both ends of the first and second body portions (22a, 22b) has a semicircular plunge portion (22c) extending toward the center, The first body portion 22a is a tubular body 22 integrally formed on the upper surface of the bracket 21, and a distribution line L is inserted through both ends thereof to be removably accommodated in the interior of the body 22 And, on the outer circumferential surfaces of both ends, disk-shaped plunges 23a, which are respectively disposed at both ends of the main body 22, are integrally formed, and between the plunges 23a are arranged in a row at regular intervals along the longitudinal direction of the outer circumferential surface, so that each Based on the distribution line socket 23 of insulating material formed to face each other through holes 23b communicating with the inside, the elastic packing material 24 formed on the inner surface of the body 22, and the distribution line socket 23 The inner circumferential surface is in close contact with the outer circumferential surface of the distribution line socket 23 by the pressure of the main body 22, and the outer circumferential surface is in close contact with the outer circumferential surface of the distribution line socket 23 and is intervened between the distribution line socket 23 and the packing material 24. The arc plate 25a having a semicircular cross section in close contact with the inner circumferential surface of the arc plate 25a, protrudes from the inner circumferential surface of the arc plate 25a, and is inserted into the through hole 23b so that it can be lifted up and down, and penetrates the sheath Lb of the distribution line L to pass through the conductor (La). Consisting of a needle (25b) that is plugged into the power distribution line (L) and secures it, a connector (25) made of a conductive material that electrically interconnects the power distribution line (L), and the first and second body parts installed on the main body (22) A wire connection assembly 20 consisting of a locking mechanism 26 for controlling the rotation of (22a, 22b);
Includes; a cover 30 that is detachably coupled to the trench body 10 to cover the side and upper portions in the longitudinal direction, and having a transparent window 31 on the upper surface so that the inside of the trench body 10 can be viewed from the outside. A building trench for distribution lines with a short circuit prevention function, characterized in that.

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