KR20080090905A - Joint kit for connecting bus ducts - Google Patents

Abstract

A joint kit for connecting bus ducts is provided to improve coupling force between an insulating plate and a bus bar at a circumferential portion by forming at least one groove at the circumferential portion concentrically. A joint kit(30) connects bus ducts by being coupled to connection unit bus bars of lateral ends of duct units. The joint kit includes a plurality of insulating plates(33). Each of the insulating plate is made of nylon resin and includes a through hole at a center and at least one groove at a circumferential portion concentrically. The insulating plate is polyamide 66 and added by a glass fiber. The glass fiber has a 25wt%. A fire retardant is added to the insulating plate. The fire retardant is UL94.

Description

Joint kit for connecting bus ducts

1 is a perspective view of a booth duct having a homogeneous connection according to the prior art.

Figure 2 is a perspective view of the joint kit for connecting the booth duct shown in FIG.

3 is a perspective view illustrating a state in which the booth duct shown in FIG. 1 is connected by the joint kit of FIG. 2.

4 is a perspective view illustrating a state in which a duct part is connected by a joint kit for connecting a booth duct according to the present invention.

FIG. 5 is a plan view in which a masking mold and a casing are added to FIG. 4.

FIG. 6 is a plan view illustrating a state in which one side connection part is disassembled from the joint kit in FIG. 5.

FIG. 7 is a cross-sectional view of the insulating plate illustrated in FIG. 5.

8 is a plan view of FIG. 7.

Explanation of symbols on the main parts of the drawings

1: booth duct 2, 3: upper and lower duct

5: side duct 10: duct part

11: Busbar 13: Plate

20: connection part 21: masking mold

30: joint kit 31: joint housing

33: insulation plate 36: high tension bolt

35: conductor 37: casing

39: insulation ring

The present invention relates to a joint kit that connects two adjacent booth duct connections, and more particularly, to a conventional phenol made by recycling the insulating plate inserted between the conductors so as to insulate between the conductors of the joint kit made of recyclable nylon resin. The present invention relates to a reusable joint kit for connecting booth ducts that compensates for material shortcomings of insulating plates including resins.

In the past, the wiring method using wire cable has been widely adopted as the power wiring method. However, in recent years, as the power demand of buildings such as high-rise buildings, apartments, and large factories has increased rapidly, the adoption of the wiring method by booth ducts using busbars has been spreading. It is becoming. Booth ducts and cables have a common point in that they have conductors and insulators, but compared to cables, booth ducts can carry large amounts of current through the conductors, protect the conductors and insulators as metal ducts, and expand It is possible to move and move, to deal with accidents in case of accidents, and to manage the system.

As an example of such a booth duct, the booth duct 101 shown in FIG. 1 is mentioned. The booth duct 101 is a booth duct provided with the same type of connection part having the same shape of the connection part 120 formed at both ends of the duct part 110. As shown, the duct part 110 and both ends of the duct part 110 are shown. Consists of the same type of connection portion 120 formed in. Here, the duct unit 110 is composed of a side duct 105 connecting the upper duct 102 and the lower duct 103 and the upper and lower ducts 102 and 103, and the side duct 105 is predetermined along the center line. While the plurality of reinforcing screw portions 109 are fastened at intervals, the connecting portion 120 includes a plurality of bus bars 111 exposed to the outside from the duct portion 110.

In addition, in the joint kit 130 mounted between two adjacent duct parts 110, as shown in FIG. 2, the busbars 111 are inserted to the left and right between the two duct parts 110 arranged in a straight line, thereby allowing the duct part to be mounted. The busbars 111 of 110 are physically and electrically connected to each other.

To this end, the joint kit 130, as shown in Figure 2, a plurality of insulating plates 133 and a plate-shaped conductor (not shown) is inserted between the busbar 111 between the front and rear joint housing 131. They are stacked at regular intervals, and the high tension bolt 135 penetrates and is inserted in the center of the outer surface of the joint housing 131 with a disk spring 134 such as a washer interposed therebetween, so that the plurality of insulating plates 133 and the conductors are inserted. Is fastened in a pressurized state.

However, as described above, the insulating plate 133 installed between the conductors into which the busbars 111 are inserted to prevent the respective busbars 111 and the conductors from being short-circuited is a bulk mold compound containing a phenol component. Since the phenolic resin has been mainly manufactured using a mold compound, the phenol resin is not environmentally friendly because it is not naturally decomposed in a completely cured state, and there is a problem in that recycling is difficult.

In addition, since the phenol resin is a gel type, it is generally difficult to form a plate into a plate shape, and therefore, a high temperature press molding has to be performed, thereby reducing productivity and increasing production cost.

The present invention has been proposed to solve the problems of the conventional joint kit as described above, by increasing the strength of the insulating plate by making an insulating plate made of thermoplastic nylon resin insulated between the conductors of the joint kit connecting two adjacent ducts The purpose is to facilitate molding and to make the appearance beautiful.

In order to achieve the above object, the present invention is a joint kit coupled to the connecting portion busbars of the lateral side facing each other between two adjacent ducts in the joint kit for connecting the duct, wherein the insulation plate of the joint kit is made of nylon resin It is characterized by.

In the above, the through-hole is formed in the center of the insulating plate, the edge portion is characterized in that one or more grooves are formed concentrically.

The insulating plate is characterized in that the polyamide 66.

And the insulation plate is characterized in that the glass fiber is added,

The glass fiber added to the insulating plate is characterized in that it has a 25% weight ratio.

In addition, the insulating plate is characterized in that the flame retardant is added,

The flame retardant added to the insulating plate is characterized in that the UL94.

Finally, the present invention relates to a method of manufacturing a joint kit for connecting a bus duct connecting a duct part by connecting to a connection busbar at opposite ends of the duct part between two adjacent duct parts. Adding glass fiber having a weight ratio of 25%, adding UL 94 which is a flame retardant to the glass fiber-added material, and press-processing the glass fiber and UL 94-added material to form a through hole in the center, and an edge portion It provides a method of manufacturing a joint kit comprising a step of forming a plate-shaped insulating plate having a plurality of grooves in.

Hereinafter, an embodiment of a joint kit for connecting a bus duct according to the present invention will be described with reference to the accompanying drawings.

The joint kit 30 for connecting the bus duct of the present invention is surrounded by the upper and lower ducts 2 and 3 and the side ducts 5 as shown by reference numeral 30 in FIG. 4. Two booths consisting of a duct part 10 and a connection part 20 formed at both ends of the duct part 10 and for physically and electrically connecting the busbars 11 of the booth duct 1 to be adjacently installed. It is installed between the duct 1.

As shown in FIG. 4, the joint kit 30 is sandwiched between a joint housing 31 serving as a clamp and a bus bar 11 to insulate the upper and lower portions of the bus bar 11 from each other. 11) a plate-shaped conductor 35 which is in electrical contact with and in contact with the plate, and a high tension bolt 36 which ties the laminated insulating plate 33 and the conductor 35 together. These plurality of insulating plates 33 and plate-shaped conductors 35 which are combined are surrounded by a casing 37 as shown in FIGS. 5 and 6.

Here, the joint housing 31 is a plate material covering the front and rear outer surfaces of the insulating plates 33 and the conductors 35 stacked as shown in FIGS. 4 to 6, and a through hole in which an insulating shaft is inserted is formed in the center thereof. In addition, a plurality of insulating plates 33 are stacked between the joint housings 31, and the insulating ring 39 is sandwiched between the joint housings 31 so as to secure a space for inserting the busbars 11, spaced apart from each other, and FIG. 7. As shown in FIG. 8, a through hole 41 for inserting an insulating shaft is formed in the center as well. In addition, the conductor 35 is a plate-like material having a smaller width than the insulating plate 33, and is in close contact with the busbar 11 inserted between the insulating plates 33 and inserted into the insulating plate 33. Finally, the high tension bolt 36 is a bolt capable of withstanding high tensile force, such as a double head joint bolt, and is laminated inside the joint housing 31 with the disc spring 34 sandwiched between the joint housing 31. The insulating plate 33, the conductor 35, the insulating ring 39, and the like are strongly coupled to the opposite nut 38 to be joined together.

In FIG. 5 and FIG. 6, reference numeral 13, which is not described, denotes a cover plate for protecting the busbars 11 of the connection part 20, and 21, a top plate duct 2 and / or to couple the cover plate 13 to the duct part 10. The masking mold fixed to the lower surface duct 3 is respectively shown.

In particular, the insulating plate 33 applied to the joint kit 30 of the present invention has a through hole 41 into which an insulating shaft is fitted, as shown in FIGS. 7 and 8, and the edge portion is gradually thinned outward. While the fork is curved so as not to damage the busbars 11 inserted between the connection parts 20, the grooves of the squares are concentrically drawn on the edges to increase the adhesion of the edges to the busbars 11. 43) is provided in plurality.

On the other hand, since the insulating plate 33 is made of nylon resin, it is preferable to use polyamide 66 as a material among the nylon resins. Since polyamide 66 is a plastic material, the insulating plate 33 using the same is recyclable, and is relatively High mechanical strength can be obtained.

In addition, the insulating plate 33 may maintain a high strength to have a yield strength of 215 MPa or more by adding a glass fiber having a weight ratio of 25% by weight. For example, by adding a flame retardant such as UL94, the fire resistance may be increased in case of a fire. Even the power cut off can be prevented.

Therefore, according to the joint kit 30 of the present invention configured as described above, when attempting to electrically connect the two duct portions 10 arranged side by side side by side of the joint kit 30 as shown in FIG. The connection parts 20 are arranged side by side on both sides, and then the busbars 11 of each of the connection parts 20 are pushed into a narrow gap formed by the plurality of insulating plates 33 as shown in FIG. 4 or 5.

Accordingly, the plurality of conductors 35 mounted inside the insulating plate 33 are in strong contact with the busbars 11, and thus the one duct part 10, the joint kit 30, and the other duct part 10 are further removed. Electrical connection.

As described above, in order to manufacture the insulating plate 33 using a nylon resin which is capable of molding and has excellent mechanical strength, first, glass fiber having a weight ratio of 25% is added to polyamide 66 in order to increase the strength of the material (S10). Then, UL 94, which is a flame retardant, is added to the material to increase the fire resistance of the material (S20). Finally, the through hole 41 is press-processed into the plate shape so that the some groove | channel 43 may be formed in the edge part in the center (S30), and manufacture of the insulating plate 33 is completed.

As described above, according to the booth duct joint 30 of the present invention, by using thermoplastic polyamide 66 having excellent moldability as a material, the appearance of the insulating plate can be made beautiful, and the production of the insulating plate is relatively easy. As a result, productivity can be improved, and the insulation board can be recycled, thereby eliminating the concern about environmental pollution. By adding glass fiber to the material, the durability can be increased, and by adding a flame retardant material, It is possible to improve the overall quality of the insulation plate by increasing the fire resistance.

In addition, by forming one or more grooves 43 concentrically on the edge portion, it is possible to increase the bonding force of the insulating plate 33 and the busbar 11 at the edge portion.

Claims (8)

A joint kit 30 coupled to the connection busbars 11 at opposite ends of the duct part 20 between the duct parts 20 of two adjacent booth ducts 1 to connect the booth ducts 1. To Insulation plate (33) of the joint kit (30) is a joint kit (30) for connecting the duct booth, characterized in that made of nylon resin. The method of claim 1, wherein the through-hole 41 is formed in the center of the insulating plate 33, one or more grooves 43 are formed concentrically at the edge portion of the joint kit 30 for connecting the booth duct. ). The method according to claim 1 or 2, The insulation plate 33 is a polyamide 66 joint kit for connecting the bus duct 30, characterized in that. The method according to claim 1 or 2, The insulation plate 33 is a joint kit 30 for connecting the bus duct, characterized in that the glass fiber is added. The method of claim 4, wherein The glass fiber added to the insulation plate 33 has a 25% weight ratio of the booth duct joint kit 30, characterized in that the. The method of claim 4, wherein The insulation plate 33 is a joint kit 30 for connecting a bus duct, characterized in that a flame retardant is added. The method of claim 6, The flame retardant added to the insulating plate 33 is a joint kit for connecting a bus duct 30, characterized in that the UL94. A joint kit 30 coupled to the connection part busbar 11 of the side end facing each other with the duct part 20 of the booth duct 1 between two adjacent booth ducts 1 to connect the booth duct 1. In the method for producing Adding a glass fiber having a weight ratio of 25% to the material of polyamide 66 (S10), adding a flame retardant UL 94 to the material to which the glass fiber is added (S20), and a material to which the glass fiber and UL 94 are added Method of manufacturing a joint kit for connecting a bus duct, comprising the step (S30) of forming a plate-shaped insulating plate having a plurality of grooves 43 in the edge portion through the through hole 41 in the center by pressing.

Images