KR20230133092A - Cable tray side joiner and joinning device using the same - Google Patents

Abstract

The present invention relates to a connector for a cable tray that can effectively prevent loosening of a fastening means, solves the problem of missing ground pieces, and is easy and convenient to assemble, and a cable tray assembly including the same.
According to this embodiment, when the ground piece is accommodated in the ground piece seating groove of the connector body and the hook hole and the hook are interconnected in a slide manner, the wall of the connector body is naturally pressed into the inside of the hook of the ground piece. Since it is fixed as it is placed, it has the advantage of minimizing the risk of loss during transportation.

Description

Cable tray connector and cable tray assembly including the same {Cable tray side joiner and joining device using the same}

The present invention relates to a connector for a cable tray and a cable tray assembly including the same.

Generally, in tunnels, factories, marine structures, etc., cables of large and small diameters are placed along the ceiling, floor, or walls to supply power or fluid.

Cable trays are used to support and secure the cables arranged in this way in an orderly manner for aesthetic reasons and to avoid causing inconvenience to passers-by.

The cable tray is a support made of incombustible or metal material to support cables, and consists of a pair of side rails that have a certain length and form the left and right sides, and a hanger (rung) that connects the side rails to each other in the horizontal direction. Lose.

In addition, a connector is used to connect the above-described cable trays in the longitudinal direction or to connect them to each other to change direction. The connector is attached to the side of the cable tray and fastened with bolts and nuts, and connects the ground electrode together. By doing so, the installation is completed.

Such prior technologies include Republic of Korea Patent Publication No. 10-1307486 (cable tray/hereinafter referred to as prior art 1) and Korea Registered Utility Model Publication No. 20-0466654 (cable tray connector with ground electrode assembled/hereinafter referred to as conventional technology). (referred to as technology 2).

The prior art 1 relates to a cable tray, comprising: a pair of side rails having at least two fastening holes; a connector having a connection hole corresponding to the fastening hole and abutting the side rail; It is disclosed that it consists of a fixed fastening member to which a flange nut is fastened through the fastening hole and the connection hole, and a grounding jumper coupled to the fixed fastening member.

The prior art 2 relates to a cable tray connector, and discloses a technology in which the cable tray connector has an overall 'ㄷ' shape, has a plurality of holes formed on one side, and has a attachable ground electrode.

The above prior arts 1 and 2 have the advantage of being able to be easily and conveniently installed on a cable tray. However, the above prior art 1 and 2 have the following problems.

First, with the connector facing the side rail of the cable trail, fastening means (e.g. bolts and nuts) are passed through and mutually fastened together. The bolts and nuts used here have a tolerance for easy fastening. is inevitable, and due to these tolerances, when a cable tray is installed in a place subject to severe vibration, the bolts and nuts loosen due to repeated vibration, weakening the bonding force, which causes serious problems that directly lead to structural bonding.

Second, in the process of assembling the cable tray, there is a problem that workers cannot confirm whether the grounding jumper (or grounding electrode) is installed or missing between the side rail and the connector unless they directly check with the relevant person. Third, the cable tray and connector are fastened to each other using about 8 fastening means (e.g. bolts and nuts), making installation easy.

It is cumbersome and assembly takes a long time.

The present invention was developed to solve the above problems, and can effectively prevent the loosening of the fastening means, solve the problem of missing ground pieces, and provide a connector for a cable tray that is easy and convenient to assemble and a cable containing the same. The purpose is to provide a Bluetooth assembly.

The connector of the present invention to achieve the above purpose is,

It consists of a plate-shaped wall and a flange formed by bending the upper and lower ends of the wall to form an overall 'ㄷ' shape, and is closely attached to the side of a pair of side rails arranged adjacent to each other in the longitudinal direction through a fastening means. In the connector for a cable tray, which consists of a connector body for interconnecting and fixing a pair of side rails, and a plate-shaped ground piece that is detachably installed on the connector body and comes in close contact with the side of the side rail,

On the wall of the connector body,

A ground piece seating groove protruding in a direction opposite to the flange to accommodate the ground piece, and a pair of second bolt through holes penetrating the ground piece seating groove;

A hook guide hole passing through the ground piece seating groove and disposed between the second bolt through holes,

A plurality of support protrusions that protrude from the wall in the flange direction and are respectively formed at the upper and lower parts with respect to the ground piece seating groove and penetrate the side of the side rail;

Reinforcement ribs protruding from the wall in the opposite direction of the support protrusion and formed on the left and right sides of the ground piece seating groove are further provided for reinforcement;

The ground piece is,

A pair of third bolt through holes corresponding to the second bolt through holes,

A hook consisting of a guide part formed between the pair of third bolt through holes and movably installed through the hook guide hole, and a hook extending from the end of the guide part and hooked to the wall is further reinforced.

Here, the ground piece is accommodated in the ground piece seating groove of the connector body and is coupled to each other in a slide manner through a hook hole and a hook. When coupled to each other, the hook hole restricts the moving distance to the guide part of the hook to control the connection piece body. It is characterized in that the 2-bolt through-hole and the third bolt through-hole of the ground piece are penetrated at a misalignment with each other.

Here, the ground piece is characterized in that it is protrudingly accommodated in the ground piece seating groove. The cable tray assembly of the present invention to achieve the above object is,

A cable tray consisting of a hanger that connects and supports a pair of side rails with a ‘ㄷ’-shaped cross section that are spaced apart from each other; It is composed of a plate-shaped wall and a flange formed by bending the upper and lower ends of the wall, respectively, to form an overall 'ㄷ' shape, and is closely attached to the side of a pair of side rails so that cable trays arranged adjacent to each other in the longitudinal direction can be interconnected. In a cable tray assembly consisting of a connector body that interconnects a pair of side rails through a fastening means, and a connector having a plate-shaped ground piece that is detachably installed on the connector body and in close contact with the side of the side rail,

The side rail is,

At both ends of the side, the first bolt through hole and the upper and lower protrusion coupling holes are further reinforced based on the first bolt through hole, respectively; On the wall of the connector,

A grounding piece seating groove protruding in a direction opposite to the flange to accommodate the grounding piece, a pair of second bolt through holes penetrating the grounding piece seating groove, and a second bolt penetrating the grounding piece seating groove. A hook guide hole disposed between the through holes, a plurality of support protrusions that protrude from the wall in the flange direction and are formed at the upper and lower portions of the ground piece seating groove respectively and penetrate the side of the side rail, and an opposite support protrusion from the wall. It protrudes in the direction and is further provided with reinforcing ribs formed on the left and right sides of the ground piece seating groove;

The ground piece of the connector is,

A guide portion formed between a pair of third bolt through holes corresponding to the second bolt through hole and the pair of third bolt through holes and installed to be movable through the hook guide hole, extending from the end of the guide portion, It is characterized in that the hook consisting of a hanging part that hangs on the wall is further reinforced.

According to this embodiment, when the ground piece is accommodated in the ground piece seating groove of the connector body and the hook hole and the hook are coupled to each other in a slide manner, the wall of the connector body is naturally pressed against the inside of the hook of the ground piece. Since it is fixed as it is placed, it has the advantage of minimizing the risk of loss during transportation.

In addition, according to this embodiment, when the connector body and the ground piece are coupled to each other, the second bolt through hole of the connector body and the third bolt through hole of the ground piece are deviated from each other by a T interval and penetrate each other as the guide part is caught in the hook guide hole. When the fastening means is inserted in a state in which the fastening means are penetrated in a misaligned manner, the ground piece is pushed in one direction while the fastening means passes through the second bolt through hole and the third bolt through hole, and at the same time, a thread of a predetermined depth is created. It passes through as it is formed, and during this process, the guide part of the hook, where the hook is caught in the ID hole, causes elastic deformation in the other direction.

In particular, as the entire ground piece moves in one direction due to the restoring force of the guide portion to be restored to its initial state, the inner surface of the third bolt pipe hole strongly presses (presses) the fastening means in one direction.

In addition, the threads formed on the inner surface of the third bolt through hole are formed in the same shape as the threads of the fastening means, so there is no tolerance at all, and since they are strongly adhered to each other in the absence of tolerances, the fastening means is firmly attached to the ground piece without shaking. It can be fixed, and as a result, a level of bonding force and fixation comparable to welding can be expected, so it can be said to be a structure that is quite suitable for use in places with severe vibration (e.g. bridges, tunnels, etc.).

In addition, according to this embodiment, since the fastening means is fastened with great resistance in the process of penetrating the third bolt through hole, the worker can sense this resistance, and accordingly, the fastening means is fastened in the state where the ground piece is missing. Because the resistance is different, the operator can intuitively recognize whether the ground piece is missing, thus solving the problem of missing ground piece.

1 and 2 are a combined perspective view and an exploded perspective view of a connector for a cable tray according to the present invention. Figure 3 is a cross-sectional view taken along line A-A' of Figure 1.
Figure 4 is a front view of Figure 1.
Figures 5 and 6 are a combined perspective view and an exploded perspective view of the cable tray assembly according to the present invention.
Figures 7a to 7c are views for explaining the assembly process of the cable tray assembly according to the present invention.

Hereinafter, it will be described in detail based on the attached drawings.

Figures 1 and 2 are a combined perspective view and an exploded perspective view of the connector for a cable tray according to the present invention, Figure 3 is a cross-sectional view taken along line A - A' of Figure 1, and Figure 4 is a front view of Figure 1.

Referring to Figures 1 to 4, the connector 20 for a cable tray of the present invention according to an embodiment is composed of a connector body 21 and a ground piece 22, and includes a cable tray ( It is in close contact with the side rail (11; see FIG. 5) of the cable tray (10, 10'; see FIG. 5) through the fastening means (B). It functions to enable electrical connection between the cable trays (10, 10') while interconnecting and fixing them (see 5).

Referring to Figures 1 to 4, the connector body 21 is a member formed by bending a metal plate to form an overall 'ㄷ' shape, and is formed by bending the plate-shaped wall 21c and the upper and lower ends of the wall, respectively. It consists of flanges (21a, 21b) formed by

In particular, a ground piece seating groove 21a-1 is formed on one side of the wall 21c and is open toward the side of the side rail 11 (see Figure 5), and the ground piece seating groove 21a-1 has a ground piece. (22) is accepted.

In addition, a pair of second bolt through-holes (21a-2) penetrating the ground piece seating groove (21a-1) are integrally formed in the wall (21c), and the second bolt through-hole (21a-2) The fastening means (B) is inserted and penetrated.

In addition, a hook guide hole (21a-3) is formed integrally with the wall (21c), which is disposed between a pair of second bolt through holes (21a-2) and penetrates the ground piece seating groove (21a-1). , the hook 22b of the ground piece 22 is installed in this hook guide hole 21a-3 so that it can be inserted, removed, and slidably moved.

In addition, a plurality of support protrusions (21a-4) are integrally formed on the wall (21c) at the upper and lower parts with respect to the ground piece seating groove (21a-1), where the plurality of support protrusions (21a-4) is inserted into the protrusion coupling hole (11b; see FIG. 6) of the side rail (11; see FIG. 6) and functions to fix and support the side rail (11; see FIG. 6). In this embodiment, the protrusion coupling hole ( 11b; see FIG. 6), as shown in FIG. 2, four each were formed at the top and bottom.

In addition, reinforcing ribs (21a-5) are integrally formed on the wall (21c) on the left and right sides based on the ground piece seating groove (21a-1), where the reinforcing ribs (21a-5) are connected to the connector body (21). When the and side rails (11; see FIG. 6) are assembled together via the fastening means (B), it serves to reinforce the wall (21a) of the connector body (21) so that it is not distorted.

Referring to FIGS. 1 to 4, the ground piece 22 is a rectangular conductive plate with rounded corners. In this embodiment, it is removably and slidably coupled to the connector body 21, and is connected to the connector body 21. Together, they are placed against the side rails 11 of the cable trays 10 and 10' (see FIG. 6) and function to electrically connect the cable trays 10 and 10'.

According to this embodiment, the ground piece 22 is accommodated in the ground piece seating groove 21a-1 of the connector body 21 through the hook hole 21a-3 and the hook 22b. When coupled to each other in a slide manner, the wall 21a of the connector body 21 is naturally press-fitted and fixed inside the hook 22b of the ground piece 22, which has the advantage of minimizing the risk of loss during transportation. .

Meanwhile, as shown in FIG. 3, please note that the ground piece 22 is protrudingly accommodated in the ground piece seating groove 21a-1.

That is, according to this embodiment, since the ground piece 22 is protrudingly accommodated in the ground piece seating groove 21a-1, it can be more securely adhered to the side rail (1 1; see FIG. 7a), thereby forming a cable tray. It has the advantage of ensuring a more reliable electrical connection between (10,10').

Here, the protrusion size of the ground piece 22 is preferably about 1/4 to 1/5 compared to the depth of the ground piece seating groove 21a-1, because if it protrudes larger than this, the cable tray (10) , 10'; see Figure 6), this is because the separation of the connector body 21 from the side rail 11 increases, which may cause problems with binding strength.

Meanwhile, as shown in FIG. 4, when the ground piece 22 and the connector body 21 are coupled to each other, the hook hole 21a-3 moves a distance to the guide portion 22b-1 of the hook 22b. Please note that the second bolt through hole (21a-2) of the connector body (21) and the third bolt through hole (22a) of the ground piece (22) penetrate at a misalignment with each other.

As an example, the hook hole (21a-3) is a long hole whose both ends are semicircular, and the hook (22b) of the ground piece 22 is inserted into the hook hole (21a-3) and moved in a slide manner. On the main surface, the guide part (22b-1) of the hook (22b) moves along the hook forming hole (21a-3), and in this process, the hook forming hole (21a-3) has a guide part (22b-1) in a semicircle at one end. As it gets stuck, further movement is restricted.

In other words, the position of the guide portion (22b-1) relative to the long width of the hook hole (21a-3) is formed to be more biased toward the third bolt through hole (22a), thereby forming the hook hole (21a-3). The movement of the guide part (22b-1) moving along can be restricted, and as a result, the second bolt through hole (21a-2) and the third bolt through hole (22a) are not aligned with each other and are shifted by the T interval. It is penetrated through.

For reference, the second bolt through hole (21a-2) and the third bolt through hole (22a) are the same size.

According to this embodiment, when the fastening means (B; bolt) is inserted in the state in which the second bolt through hole (21a-2) and the third bolt through hole (22a) are pierced at an angle to each other as described above, the fastening means (B) In the process of (B; bolt) passing through the second bolt through hole (21a-2) and the third bolt through hole (22a), the ground piece (22) is pushed in one direction (to the left in FIG. 7b). It passes while forming a screw thread of a predetermined depth, and during this process, the guide portion 22b-1 of the hook 22b hanging on the hook guide hole 21a-3 is elastically deformed (bended) in the other direction; as shown in FIG. 7b. to the right) is caused.

In particular, the entire ground piece 22 moves in one direction (to the right based on FIG. 7c) due to the restoring force of the guide portion 22b-1 to be restored to its initial state, and the inner surface of the third bolt through hole 22a is fastened. The means (B; bolt) is strongly pressed (pressed) in one direction (to the right in Figure 7c).

In addition, the threads formed on the inner surface of the third bolt through hole 22a are formed in the same shape as the threads of the fastening means (B; bolt), so there is no tolerance at all, and since they are strongly adhered to each other in a state without tolerances, the fastening means (B; bolt) can be firmly fixed to the ground piece 22 without shaking, and as a result, a level of bonding strength and fixation comparable to that of welding can be expected in places with severe vibration (e.g. bridges, tunnels, etc.) ) can be said to be a structure that is quite suitable for use.

Moreover, since the fastening means (B; bolt) is fastened with great resistance in the process of penetrating the third bolt through hole 22a, the worker can sense this resistance, and accordingly, the ground piece 22 In this missing state, since the fastening resistance is different, the worker can intuitively recognize whether the ground piece 22 is missing, thereby solving the problem of the ground piece 22 being missing.

Figures 5 and 6 are a combined perspective view and an exploded perspective view of the cable tray assembly according to the present invention.

Referring to Figures 5 and 6, the cable tray assembly according to one embodiment includes a pair of cable trays (10, 10') and a connector.

It consists of (20).

The cable trays (10, 10') connect and support a pair of side rails (11, 12) having a 'ㄷ' shaped cross section arranged spaced apart from each other, and a pair of side rails (11, 12). It consists of a hanger (13).

In particular, first bolt through holes (11a, 12a) through which fastening means (B; bolts) are inserted are integrally formed at both ends of the side rails (11, 12), and first bolt through holes (11a, 12a) are formed at both ends of the side rails (11, 12). ), the protrusion coupling holes 11b and 12b are formed integrally at the upper and lower parts, respectively.

Here, the support protrusions 21a-4 of the connector 20 are respectively inserted into the protrusion coupling holes 11b and 12b to connect and support the side rails 11 of the cable trays 10 and 10'.

Therefore, according to this embodiment, only the fastening means (B; bolt) for fastening the side rails 11 and the connectors 20 of the cable trays 10 and 10' to each other is fastened without the need to fasten everything as in the past. This has the advantage of making assembly more convenient and easier.

Meanwhile, since the description of the connector 20 has already been described in detail previously, it will be omitted below to avoid redundant description.

The assembly process of the present invention consisting of the above configuration will be described.

Figures 7a to 7c are diagrams for explaining the assembly process of the cable tray assembly according to the present invention.

As shown in FIGS. 6 and 7A, first, the side rails 11 of the cable trays 10 and 10' are arranged in the longitudinal direction, and then the connectors 20 are brought into close contact with the side rails 11 facing each other. , the support protrusions (21a-4) of the connector (20) are respectively inserted into the protrusion coupling holes (11b, 12b) of the side rail (11) and the first bolt through hole (11a) of the side rail (11). The second and third bolt through holes (21a-2, 22a) of the connector (20) are in communication with each other, and at this time, the second bolt through hole (21a-2) and the third bolt through hole (22a) are spaced at a T interval (FIG. 4 (Reference) is offset and penetrated.

Referring to FIG. 7B, the fastening means (B; bolt) is connected to the second bolt through hole (21a) in a state in which the second bolt through hole (21a-2) and the third bolt through hole (22a) are offset from each other as described above. When inserted into the third bolt through hole (22a) through -2), the fastening means (B; bolt) passes through the second bolt through hole (21a-2) and the third bolt through hole (22a). By pushing the ground piece 22 in one direction (to the left in FIG. 7b), it passes while forming a thread of a predetermined depth, and in this process, the hook 22b hanging on the hook guide hole 21a-3 is passed through. The guide portion 22b-1 causes elastic deformation (bending; right side in FIG. 7b) in the other direction.

In particular, as shown in FIG. 7C, the entire ground piece 22 moves in one direction (to the right based on FIG. 7C) due to the restoring force of the guide portion 22b-1 to be restored to the initial state, thereby forming the third bolt penetration hole. The inner surface of (22a) strongly presses (presses) the fastening means (B; bolt) in one direction (to the right based on FIG. 7c).

Moreover, the threads formed on the inner surface of the third bolt through hole 22a are formed in the same shape as the threads of the fastening means (B; bolt), so there is no tolerance at all, and since they are strongly adhered to each other in the absence of tolerances, the fastening means (B; bolt) is a ground piece

It can be firmly fixed to (22) without shaking.

In addition, a nut is fastened to the end of the fastening means (B; bolt) that penetrates the first bolt through hole 11a to prevent the fastening means (B; bolt) from loosening. In this way, the cable tray (10, 10') can be installed in succession.

According to this embodiment, the bonding force and fixation comparable to that of welding can be expected due to the above-mentioned action, making it quite suitable for use in places with severe vibration (e.g., bridges, etc.).

10,10': Cable tray 11,12: Side rail 11a, 12a: 1st bolt through hole
11b, 12b: Protrusion coupling hole 13: Hanger 21a: Wall 20: Connector
21: Connector body 21a: Wall 21b, 21c: Upper and lower flanges
21a-1: Grounding piece seating groove 21a-2: Second bolt through hole
21a-3: Hook guide hole 21a-4: Support projection 21a-5: Reinforcement rib
22: Ground piece 22a: Third bolt through hole 22b: Hook
22b-1: Guide portion 22b-2: Hook portion B: Fastening means

Claims (3)

It consists of a plate-shaped wall and a flange formed by bending the upper and lower ends of the wall to form an overall 'ㄷ' shape, and is closely attached to the side of a pair of side rails arranged adjacent to each other in the longitudinal direction through a fastening means. In the connector for a cable tray, which consists of a connector body for interconnecting and fixing a pair of side rails, and a plate-shaped ground piece that is detachably installed on the connector body and comes in close contact with the side of the side rail,
On the wall of the connector body,
A grounding piece seating groove protruding in a direction opposite to the flange to accommodate the grounding piece, a pair of second bolt through holes penetrating the grounding piece seating groove, and a second bolt penetrating the grounding piece seating groove. A hook guide hole disposed between the through holes, a plurality of support protrusions that protrude from the wall in the flange direction and are respectively formed at the upper and lower parts with respect to the ground piece seating groove and penetrate the side of the side rail, and a support protrusion from the wall. It protrudes in the opposite direction and is further provided with reinforcing ribs formed on the left and right sides with respect to the ground piece seating groove;
The ground piece is,
A guide portion formed between a pair of third bolt through holes corresponding to the second bolt through hole and the pair of third bolt through holes so that the hook can move through the second bolt hole, from the end of the guide portion. The hook, which consists of a hook that extends and hangs on the wall, is further reinforced, is accommodated in the ground piece seating groove of the connector body, and is coupled to each other in a sliding manner through the hook hole and the hook. When coupled to each other, the hook hole guides the hook. By limiting the slide movement in the part, the second bolt through hole of the connector body and the third bolt through hole of the grounding piece are penetrated in a misaligned manner, and the fastening means penetrating the second bolt through hole and the third bolt through hole are pressurized and fixed by the grounding piece. A connector for a cable tray, characterized in that it can be used.
According to paragraph 1,
A connector for a cable tray, wherein the ground piece is protrudingly accommodated in the ground piece seating groove.
A cable tray consisting of a hanger that connects and supports a pair of side rails with a 'ㄷ' shaped cross section arranged to be spaced apart from each other; It is composed of a plate-shaped wall and a flange formed by bending the upper and lower ends of the wall, respectively, to form an overall 'ㄷ' shape, and is closely attached to the side of a pair of side rails so that cable trays arranged adjacent to each other in the longitudinal direction can be interconnected. In a cable tray assembly consisting of a connector body that interconnects a pair of side rails through a fastening means, and a connector having a plate-shaped ground piece that is detachably installed on the connector body and in close contact with the side of the side rail,
The side rail is,
At both ends of the side, the first bolt through hole and the upper and lower protrusion coupling holes are further reinforced based on the first bolt through hole, respectively; On the wall of the connector,
A grounding piece seating groove protruding in a direction opposite to the flange to accommodate the grounding piece, a pair of second bolt through-holes penetrating the grounding piece seating groove, and a second bolt through-hole penetrating the grounding piece seating groove. A hook guide hole arranged in between, a plurality of support protrusions that protrude from the wall in the flange direction and are formed at the top and bottom based on the ground piece seating groove respectively and penetrate the side of the side rail, and the opposite support protrusions from the wall. It protrudes in one direction and is further provided with reinforcing ribs formed on the left and right sides of the ground piece seating groove;
The ground piece of the connector is,
A guide portion formed between a pair of third bolt through holes corresponding to the second bolt through hole and the pair of third bolt through holes and installed to be movable through the hook guide hole, extending from the end of the guide portion, The hook, which consists of a hanging part that hangs on the wall, is further reinforced, is accommodated in the ground piece seating groove of the connector body, and is coupled to each other in a sliding manner through the hook hole and the hook. When mutually coupled, the hook hole slides into the guide part of the hook. By limiting the movement, the second bolt through hole of the connector body and the third bolt through hole of the grounding piece are penetrated at an angle to each other, and the fastening means inserted into the second bolt through hole and the third bolt through hole are pressurized and fixed by the grounding piece. Cable tray assembly.