JPS6026455Y2 - Branch connection of plate conductor cable - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a branch connection portion of a plate-shaped conductor cable.

Traditionally, insulated bus ducts have been widely used as large-capacity power lines in buildings, factories, etc. because of their low impedance, low voltage drop, and small footprint. It takes a lot of man-hours to install the cable.

There are drawbacks such as the lack of adaptability to the installation route due to its rigidity, and the development of a long and flexible path duct is desired.

As a cable that meets this demand, a cable that is made of copper or aluminum plate as a conductor and provided with an insulator is suitable.

However, with this cable, when making a branch connection in the middle,
Conventional cable connection methods cannot be used as is; special connections are required.

The present invention was developed in consideration of the above points, and its gist is that for a plate-shaped conductor cable made of a plate-shaped conductor coated with an insulator, the insulator is attached to the cable at the position where the connection is to be made. Peel off only one side of the conductor to expose the conductor. Stud bolts are welded onto the conductor with that one side exposed, branch cable terminals are screwed and connected to the stud bolts, and the area around them is insulated. This is a branch connection portion of a plate-shaped conductor cable characterized by the following structure.

One embodiment of the connecting part of the present invention will be further described with reference to the accompanying drawings. 1 is a plate-shaped conductor cable, and a plate-shaped conductor 11
and an insulator 12 and a protective sheath 13 provided on its outer periphery.
It is more hollow.

As the conductor 11, a conductive metal such as copper or aluminum is used, and its thickness is suitably about 271 m or less than the flexible surface.

Plastics such as vinyl chloride and polyethylene are used for the insulator 12 and the sheath 13, and are applied by extrusion or tape wrapping.

At the position where this plate-shaped conductor cable 1 is to be connected, the sheath 13 and insulator 12 are stripped off only on one side of the cable 1, and the conductor 11 is exposed on only one side.

Next, a stud bolt 2 is welded onto the exposed conductor 11 using a stud elder.

In this case, the stud bolt 2 is welded instantaneously by concentrating energy locally, so that no damage is caused to the back surface or the surrounding insulator 12, sheath 13, etc.

The stud bolt 2 is made of a conductive metal such as copper or brass, and is provided with a thread.

It is fine if the conductor 11 is made of copper, but if it is made of aluminum, it cannot be welded with copper or brass stud bolts 2.

On the other hand, in the case of the aluminum stud bolt 2, welding can be done, but the terminal portion 31 of the branch cable 3 draws current from the aluminum threaded portion, resulting in a problem.

Therefore, in the case of the aluminum conductor 11, the welded part is aluminum and the part above it is a two-stage stud hole 2 with copper cold-welded.
A good connection can be made by using

Next, the branch cable 3 is screwed to the welded stud bolt 2, and an insulating cover 4 is provided to complete the cable branch connection.

Note that 21 is a nut, 31 is a terminal portion attached to the tip of the branch cable 3, 22 is a washer, 23 is a spring washer, 24 is a nut, and 25 is an insulating bag nut.

As the insulating cover 4, a plastic cover such as polyethylene is suitable, and the contact surface with the sheath 13 may be waterproofed if necessary.

Further, the cover 4 is not limited to a cover, but may be any other material as long as it has insulation properties, such as wrapping with tape, molding insulation treatment, etc., and is not limited to this embodiment.

The connecting portion of the present invention constructed as described above has the following advantages, and its practical value is extremely significant.

1. By using a stud welder, the stud bolts can be completely welded without any variation, resulting in high reliability of the connection.

2. The stud welder is small and can not only be used in a prefabricated factory at a factory, but also can be brought to a construction site to easily weld stud bolts.

3. Economical because only one side needs to be insulated.

4. Connecting branch cable terminals does not require any special tools and can be done reliably.

5. Perfect because insulation is easy and live parts are not exposed at all.

6. Branch cables can be easily changed in size or replaced if necessary.

[Brief explanation of the drawing]

The accompanying drawing is a partially sectional explanatory view showing an embodiment of the connecting portion of the present invention. 1: Plate conductor, 11: Conductor, 12: Insulator, 13: Sheath, 2: Stud bolt, 3: Branch cable, 4: Insulating cover

Claims (1)

[Scope of utility model registration request] For a plate-shaped conductor cable made of a plate-shaped conductor coated with an insulator, the insulator at the position to be connected is peeled off only on one side of the cable to expose only one side of the conductor, and the conductor with that one side exposed 1. A branch connection section for a plate-shaped conductor cable, characterized in that a stud bolt is welded, a branch cable terminal is screwed onto the stud bolt, and the periphery of the connection section is insulated.