JP2002313456A - Bus duct connection part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve connection workability in disposing a bus duct in a vertical direction, and reduce laying space in laying a large number. SOLUTION: Plate type connection cases 1 and 2 are provided in length directions on the right and the left at an end part of a bus duct unit, and on both side edge parts of the connection cases 1 and 2, J-shaped bolt insertion cuts 3 and 4 are provided in such a way that an inlet part is perpendicular to a side edge, and that a depth part is bent toward the length direction center side of the bus duct unit. On outer surfaces of the connection cases 1 and 2, stoppers 5 and 6 are provided to lock relative positions to a counter connection case to be connected at a first position and a second position. At the first position, inlet parts of bolt inserting cuts 3 and 4 are overlapped, and at the second position, depth parts of the bolt inserting cuts 3 and 4 are overlapped with each other. After a connection bolt is engaged laterally to the bolt inserting cuts 3 and 4 as it is locked to the first position, it is locked to the second position, and the connection bolt is tightened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bus duct connecting portion used for low-voltage wiring in various high-rise buildings such as high-rise buildings and factories.

[0002]

2. Description of the Related Art Many low-voltage wirings in high-rise buildings, such as high-rise buildings and factories, employ bus ducts that can increase the current capacity and are easily branched. The wiring of the bus duct is
This is performed by connecting a bus duct unit as shown in FIG. As the bus duct unit, there is not only a linear type as shown in FIG. 7 but also an elbow type or a T-branch type which is bent at a right angle. I do.

[0003] The structure of the bus duct is the same as that of FIG.
As shown in FIG. 8, a plurality of conductors 22 to 24 each having an outer periphery covered with an insulator 28 are laminated, and sandwiched from both sides by a bus duct housing 20 made of a resin-coated steel plate, as shown in FIG. It is tightened at 29. At both ends, connection cases 21 are provided, so that a plurality of bus duct housings 20 can be sequentially connected.

In the connection case 21, conductors 22, 23,
24 are disposed with the insulator 28 removed. At one end, the conductor 22 is fixed to the connection case 21 with the insulating spacer 25 interposed therebetween, and the conductors 23 and 24 are provided integrally with the insulating spacers 26 and 27 interposed therebetween. At the other end, the conductor 24 is fixed to the connection case 21 and the conductors 22 and 23 are provided integrally. And FIG.
As shown in (a) and (b) before and after the connection, the other end B of another bus duct unit is inserted into one end A of this bus duct unit. As a result, the conductors 22 and 2 at one end A
3, the conductor 2 at the other end B of the other bus duct unit
2 and 23 enter, the conductor 24 at one end A and the connection case 2
1, the conductor 24 at the other end B and the connection case 21 enter, and the conductors 22 and
23 and 24 are connected in surface contact with each other.

[0005] The connected two bus duct units are fixed by tightening from both sides of the connection case 21 with connection bolts (not shown). The connection bolts are inserted into bolt insertion holes 30 provided on both sides of the connection case 21, as shown in FIG. At this time, in order to insert the connection bolts, it is necessary to match the positions of the bolt insertion holes 30 of both bus duct units. However, in order to improve workability, a V-shape indicating the center position of the bolt insertion holes 30 is required. Notches 31 are provided on both edges of the connection case 21 as marks. Then, as shown in FIG. 10B, the positions of the two bus duct units are adjusted so that the cutouts 31 of the two bus duct units coincide with each other, and the bolt insertion holes 3 are formed.
Insert the connection bolt through 0.

[0006]

However, in the above-mentioned conventional bus duct unit, when the bus duct is disposed in the vertical direction, one of the bus duct units is held up by hand or the like while supporting it so as to lift it up and down. , The bolt insertion holes 30 need to be aligned with each other, but there is a problem that it is very difficult to adjust the position while lifting the bolts upward.

[0007] Further, since the connection bolts are vertically inserted from the side surfaces into the bolt insertion holes 30 provided on both sides of the connection case 21, when multiple strips are laid, at least between the adjacent bus ducts. There is also a problem that it is necessary to secure an interval corresponding to the length of the connection bolt, and a large installation space is required accordingly.

The present invention solves such a problem, that is, when the bus duct is arranged in the vertical direction,
It is an object of the present invention to improve the connection workability and to reduce the installation space in the case of multiple installations.

[0009]

According to a first aspect of the present invention, there is provided a bus duct connecting portion provided with a plate-like connecting case in a longitudinal direction on both left and right sides of an end portion of the bus duct unit. On both side edges, a J-shaped bolt insertion notch is provided in which the entrance is perpendicular to the side edge and the back is bent toward the center in the longitudinal direction of the bus duct unit, and is connected to the outer surface of the connection case. A stopper capable of locking the relative position with respect to the mating connection case between the first position and the second position is provided. In the first position, the entrances of the bolt insertion notches overlap, and in the second position, The inner portions of the bolt insertion notches are overlapped with each other, and connection bolts are inserted into the bolt insertion notches to fasten the connection plates of both connection cases from both sides. In this way, when the bus ducts are arranged in the vertical direction, the operability of the connection can be improved, and the space for laying multiple bus ducts can be reduced.

[0010] In the bus duct connecting portion according to the second aspect, the stoppers are provided one by one at symmetrical positions on opposite surfaces of the connection cases at both ends of the bus duct unit. In this case, the structures at both ends of the bus duct unit are symmetrical, and the connection direction is not limited.

Further, the bus duct connecting portion according to claim 3 is characterized in that the connecting bolts are tightened via leaf springs provided at both ends with bolt insertion notches opened outward. With this configuration, the connection bolt can be inserted from the lateral direction even with the leaf spring interposed.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing a first embodiment of the present invention. FIG. 1 shows a front view and a side view of a bus duct connecting portion in a main line in which a bus duct is disposed in a vertical direction. Reference numerals 1 and 2 denote connection cases, 3 and 4 denote bolt insertion notches, and 5 and 6 denote stoppers. is there.

In the connection cases 1 and 2 of the present invention, bolt insertion notches 3 and 4 are provided at both side edges of the connection cases 1 and 2 as bolt holes for inserting connection bolts.
As shown in the connection case before connection in FIG. 3, the bolt insertion notches 3 and 4 have opening portions 3a and 4a opened at right angles to the side edges, and deep portions 3b and 4b extend in the longitudinal direction of the bus duct unit. It has a J-shape bent to the center.

Further, stoppers 5 and 6 are provided on the outer surfaces of the connection cases 1 and 2. Each of the stoppers 5 and 6 has two stages, such as a first stage 5a, 6a and a second stage 5b, 6b, for receiving the leading edge of the mating connection case 2, 1. Further, of the two connection cases 1 and 2, the connection case 1 and the connection case 1 where
2 is slightly curved outward.

When two bus duct units provided with such connection cases 1 and 2 are connected, the upper bus duct unit is moved downward with the connection cases 1 and 2 facing each other. come. Then, the two connection cases 1 and 2 slide in a staggered overlapping manner, and the tips of the mating connection cases 2 and 1 enter the stoppers 5 and 6, respectively, and first, the first steps 5a and 6a , The relative positions of the connection cases 1 and 2 are fixed. FIG. 1 shows this state.

Then, in this state, the positions of the first steps 5a, 6a of the stoppers 5, 6 are determined so that the entrances 3a, 4a of the bolt insertion notches 3, 4 overlap. At this time, the entrances 3a and 4a of the bolt insertion notches 3 and 4 are open toward both edges of the connection cases 1 and 2, so that the connection bolt can be inserted from the lateral direction.

After the connection bolts are inserted into both the bolt insertion notches 3 and 4 in this manner, the connection cases 1 and 2 are pushed inward and the ends of the connection cases 1 and 2 are
6 from the first stage 5a, 6a. As a result, as shown in FIG. 2, the ends of the connection cases 1 and 2 abut against the second steps 5b and 6b, and the positions of the connection cases 1 and 2 are fixed.
Then, at that position, the deep portions 3b, 4b of the bolt insertion notches 3, 4 overlap, and the inlet portions 3a, 4a are completely displaced, and the connection bolts are held and the opening is closed. become.

FIG. 4 is a diagram showing connection bolts and nuts and a leaf spring. In FIG. 4, 7 is a connection bolt, 8 is a washer, 9 is a nut, 10 and 12 are leaf springs, 11 is a notch for bolt insertion, 13 is a bolt insertion hole, and 14 is a bush. In the state shown in FIG. 1, the bolt insertion notches 11 of the leaf spring 10 are aligned with the bolt insertion notches 3 and 4 of the connection cases 1 and 2, and the bolt insertion notches 3 and 4 are inserted into the bolt insertion notches 11. , Connecting bolts 7, 7 through washers 8
From the side.

Thereafter, the connection cases 1 and 2 are pushed inward to bring them into the state shown in FIG. Then, the bolt insertion notches 12 and the nuts 9 and 9 are applied to the opposite connection cases 1 and 2, and the connection bolts 7 are tightened to fix the two connection cases 1 and 2 to each other. Furthermore, a connection cover (not shown) is placed over a portion of the opening that is perpendicular to the connection cases 1 and 2 so as to cover the entire opening, and is screwed to the bus duct housing. As a result, the conductor connection part of the bus duct is
The connection cases 1 and 2 and the connection cover can cover from the outside without any gaps, thereby ensuring safety.

FIG. 5 is a diagram showing a second embodiment of the present invention. In the first embodiment, the stoppers are provided one by one at the symmetrical positions on the opposite surfaces of the connection cases 1 and 2 at both ends of the bus duct unit. However, as shown in FIG. The stoppers 5 and 6 may be provided on both sides of the connection case 1 and the stopper may not be provided on the connection case 2 at the other end.

FIG. 6 is a diagram showing a third embodiment of the present invention. In this embodiment, a leaf spring fixture 15 for holding the leaf spring 10 is provided on the outer surface of the connection case 2 to which the leaf spring 10 is to be applied. In advance, the leaf spring fixing bracket 15
If the leaf springs 10 are fitted in the holes, the positioning of the leaf springs 10 becomes unnecessary.

[0022]

Since the present invention is configured as described above, it has the following effects. That is, the bus duct connecting part according to claim 1 is provided with a plate-shaped connecting case in the longitudinal direction on both the left and right sides of the end of the bus duct unit, and the entrance part is provided on both side edges of the connection case with respect to the side edge. A J-shaped bolt insertion notch is provided which is perpendicular to the bus duct unit and has a depth bent toward the center in the longitudinal direction of the bus duct unit. And a stopper which can be locked at a second position is provided. At a first position, an inlet portion of the bolt insertion notch overlaps, and at a second position, a deep portion of the bolt insertion notch overlaps, and The connection bolts were inserted through the bolt insertion notches, and the connection plates of both connection cases were tightened from both sides. As a result, when arranging the bus duct in the vertical direction, the positioning is facilitated by the stopper, the workability of the connection can be improved, and the connection bolt is locked in the first position. Since it can be fitted in the connection case in the lateral direction, it is not necessary to increase the distance between adjacent bus ducts when multiple strips are laid, and the installation space can be reduced.

Further, in the bus duct connecting portion according to the second aspect, since the stoppers are provided one by one at symmetrical positions on opposite surfaces of the connection cases at both ends of the bus duct unit, the structure at both ends of the bus duct unit is reduced. With the symmetry, the connection direction of the bus duct unit is not limited.

In the bus duct connecting portion according to the third aspect, the connection bolts are tightened through the plate springs provided with the bolt insertion notches opened to the outside at both ends, so that the plate spring is interposed. The connection bolt can be inserted from the side even if it is.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a state where a second locking position is reached;

FIG. 3 is a diagram showing a connection case before connection.

FIG. 4 is a diagram showing connection bolts and nuts and a leaf spring.

FIG. 5 is a diagram showing a second embodiment of the present invention.

FIG. 6 is a diagram showing a third embodiment of the present invention.

FIG. 7 is a diagram showing a bus duct unit.

8 is a sectional view taken along the line AA of FIG.

FIG. 9 is a diagram showing a conventional bus duct connection portion.

FIG. 10 is a side view of that of FIG. 9;

[Explanation of symbols]

 1, 2, connection case 3, 4, bolt notch 5, 6, stopper 7, connection bolt 8, washer 9, nut 10, 12, leaf spring 11, bolt notch 13, bolt insertion hole 14, bush 15 … Leaf spring fixing bracket 20… bus duct housing 21… connection case 22-24… conductor 25-27… insulating spacer 28… insulator

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5E012 BA34 5G355 AA10 BA01 BA11 5G365 CC01 5G375 AA20 CA02 CA17

Claims (3)

[Claims] 1. A plate-shaped connection case is provided in the left and right longitudinal directions of both ends of a bus duct unit, and an entrance portion is perpendicular to the side edge and a back portion of the bus duct unit is formed on both side edges of the connection case. A J-shaped bolt insertion notch which is bent toward the center in the longitudinal direction is provided, and the outer surface of the connection case is provided with a first position and a second position which are relative to a mating connection case to be connected.
In the first position, the inlets of the bolt insertion notches overlap with each other, and the second
The bus duct connection portion, wherein the inner portions of the bolt insertion notches overlap each other at a position, and connection bolts are inserted into the bolt insertion notches to fasten the connection plates of both connection cases from both sides. 2. The bus duct connection part according to claim 1, wherein the stoppers are provided one by one at symmetrical positions on opposite surfaces of the connection case at both ends of the bus duct unit. 3. The bus duct connecting part according to claim 1, wherein said connecting bolt is tightened via a leaf spring provided with a bolt insertion notch opened on the outside at both ends.