JPS6138360Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the provision of an angled bus duct that is useful when the bus duct is laid in a building with a bend at the horizontal wiring location.

A conventional bus duct of this type includes a plurality of strip-shaped conductors B, B, B, and a duct housing DH that covers the conductors B, B, B with insulators S, S interposed therebetween.
The conductors B, B, and B are bent at the required angle at the longitudinally intermediate portion of the unit BD, which is composed of unit
BD, BD... can all be connected in a straight line, but on the other hand, the bending process is complicated, making it uneconomical, and the unit itself is doglegged, making it difficult to pack and transporting it inefficiently, making it difficult to carry out during construction. It was difficult to handle.

In view of the drawbacks of the conventional technology, the present invention aims to provide an angled bus duct that requires less processing, facilitates transportation and assembly, has good connection efficiency, and can significantly reduce maintenance man-hours. . That is, the bus duct of the present invention is composed of a plurality of strip-shaped conductors 1, 1, 1 and a duct housing 3 that covers the conductors 1, 1, 1 with insulators 2, 2 in between. It consists of at least two straight bus duct units 4, 4', and the ends of these units 4, 4' are bent at a required angle to protrude only the conductors 1, 1, 1 of one side unit 4 while maintaining their respective intervals. A duct joint plate 5 which is bent at a predetermined angle at an intermediate portion in the longitudinal direction between the straight end portions 30 and 30' of the duct housings 3 and 3' which are opposed to each other in the longitudinal direction.
are interposed, and the bent and protruding conductor terminals 10, 10, 10 are connected to the linear terminals 1 of the conductors 1', 1', 1' of the other side unit 4'.
1', 11', and 11' are overlapped and fastened and connected with bolts 6.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to FIGS. 2 to 4.

The drawings partially show an example of construction with three straight bus duct units 4, 4', 4''.

Therefore, the straight bus duct units 4, 4',
4" are each provided with the same configuration. That is, as explained by unit 4, 3"
It consists of two vertically long strip-shaped conductors 1, 1, 1, and a vertically long duct housing 3 that surrounds the conductors 1, 1, 1 from all sides with grooved insulators 2, 2 interposed therebetween. The grooved insulators 2, 2 each have three rows of support grooves 2a, 2a,
2a, and the conductors 1,
The long side edges of 1 and 1 are fitted together, and the conductors are sandwiched from above and below and arranged side by side.

On the other hand, the duct housing 3 includes the conductors 1, 1,
Duct side plates 31 and 32 provided on the left and right in the parallel installation direction of 1
It consists of duct horizontal plates 33 and 34 provided above and below the side plates 31 and 32, and the respective plates 31 to 34 are connected with screws 35 and assembled into a substantially rectangular shape.
The duct housing 3 has a long side plate 31 and a short side plate 32, and further shortens the horizontal plates 33 and 34.
A and 34a, the side plate end 31a is larger and the side plate end 32a is smaller.

One of the conductors 1, 1, 1 is made to extend further from the side plate ends 31a, 32a at one end, and is bent at a required angle on one of the left and right sides while maintaining the respective intervals at the end of the extension, so as to form a horizontal line. Angled conductor terminals 10, 10, 10 are formed aligned with each other, and linear terminals 11, 11,
11 is formed.

The unit 4 configured in this way has an angled terminal 10,
Ends with 10,10 and straight terminals 11,1
1 and 11 are faced to each other for connection.

That is, the side plate ends 32a, 3 that protrude slightly
Side plate end 3 with 2'a inward and largely protruding
1a and 31'a are placed outside and face each other at an angle, and the respective side plate ends 31a and 31'a are
The duct joint plates 51 and 52 with bent intermediate portions are interposed between 32a and 32'a to connect them with screws, while the angled ends 10, 10, 10 of the conductors are installed in the mating duct housing. and the straight terminals 11', 11', 1 of the conductors 1', 1', 1'
1' are superimposed on each other.

An insulating spacer 7 is provided between and on the outside of the overlapping portion of the linear terminals 11', 11', 11' and the angled terminals 10, 10, 10, and a bolt 6 is passed through the spacer 7 and the overlapping portion. , are fastened together with nuts 8, and the respective conductors are connected. 9 is a disc spring installed between the head of bolt 6 and nut 8,
The bolt tightening force is applied widely to the spacer 7, and the tightening force of the bolt 6 is prevented from decreasing.

In particular, in order to obtain an appropriate bolt tightening force, a double nut is used in which the nut 8 is formed with a small cross-section section in the middle that can be sheared and broken at a predetermined torque, and one nut section is held until the small section section breaks. It is best to tighten and apply a predetermined tightening torque.In this case, both nuts can be prevented from loosening due to the small cross-section that is broken, so management such as retightening is required over a long period of time. This makes it possible to achieve a zero-maintenance system.

The conductors connected in this manner are further closed by interposing a duct cover 53 with an angled intermediate portion between the opposing portions of the duct horizontal plate ends 33a and 34a, and screwing both ends. Ru.

Furthermore, according to the bus duct of the present invention, the form of bending between units can be determined based on the forming angle of the angled terminal of the conductor, so if it is compatible with a bending route, the forming angle of the angled terminal can be arbitrarily selected. Alternatively, the number of units with a predetermined angled terminal may be arbitrarily selected and installed.

Also, since it consists of a combination of the above units,
The ends of the configured bus duct form an angled end on the one hand and a straight end on the other. Therefore, it is preferable to use the connection mechanism of the present invention for connection to a bus duct having a straight route.

As is clear from the above explanation, the angled bus duct of the present invention does not have an angled unit in the middle, but consists of at least two straight bus ducts in which only the conductor is bent at a required angle and protrudes at one end. Since it is made as a unit, it requires only a few man-hours and is very simple to process, and since it is only necessary to pack it as a linear unit, it does not require much effort, and transportation can be made more compact and efficient.

In addition, these units can be connected in the same way as conventional straight route connections by overlapping the angled conductor end with the straight end of the conductor in the straight part of the mating duct and bolting. It is possible to construct a desired angled bus duct by simply connecting the conductor and duct housing by interposing a duct connecting plate which is bent at the required angle. In particular, since the angled conductor terminal and the straight conductor terminal are overlapped at the straight section on one duct side, each phase can be fastened all at once with one bolt, improving connection efficiency and greatly reducing maintenance man-hours. The practical effects of this can be greatly reduced.

[Brief explanation of the drawing]

Figures 1A and 2B are a plan view and a front view of a conventional angled bus duct, Figure 2 is a plan view showing an embodiment of the bus duct of the present invention, and Figure 3 is an angled connection part of the bus duct of the present invention. FIG. 4 is a cross-sectional explanatory view of the bus duct. 1: Strip conductor, 3, 3': Duct housing, 4, 4', 4'': Straight bus duct unit,
5': Duct joint plate, 6: Bolt, 10: Angled end of conductor, 11, 11': Straight end of conductor.

Claims (1)

[Scope of utility model registration request] Consists of at least two straight bus duct units each consisting of a plurality of strip-shaped conductors and a duct housing surrounding the conductors with an insulator interposed therebetween, with the ends of the units facing each other on one side. Only the conductors of the side units are bent and protruded at a required angle with a distance between them, and the duct joints are bent at a required angle between the straight ends of the opposing duct housings. An angled bus duct characterized in that a contact plate is interposed therebetween, and the bent and protruding conductor terminal is overlapped with a straight terminal of a conductor of the other side unit and fastened and connected with a bolt.