JPH0898365A - Structure of power feeding unit for plug duct - Google Patents

Abstract

PURPOSE: To make it possible to adjust a voltage drop or balance in current adequately even when a load terminal is added more, by making a power feeding unit movable freely even after the power feeding unit for a plug duct is mounted. CONSTITUTION: A power feeding unit 2 has a holding member 2a between conductors 1a in a plug duct 1. The holding member 2a has an inner connection conductor 2b. The connection conductor 2b has a clip 2c to be fitted elastically to the conductor 1a on one end, while a power feeding terminal 2d is formed on the other end. In this case the holding member 2a is made of insulating molded resin body, and a given number of inner conductors 2b, clips 2c, and terminals 2d are provided according to the conductors 1a of the plug duct 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power feeding structure which is movable to any position of a plug duct.

[0002]

2. Description of the Related Art In various factories and laboratories, a large number of plug-duct type power distribution conductors for supplying electric power are provided as a power source or an illumination source. This plug duct distribution conductor is an extremely flexible wiring conductor that can be easily added and removed by connecting the required number of wires of a predetermined length to each other depending on the place where they are laid (hereinafter simply referred to as plug duct). ).

As shown in FIG. 5, the plug duct 1 generally has a three-phase wiring conductors 1a arranged vertically in two rows, and has a cross section surrounded by a rectangular cross-section duct having an open bottom. A power feeding box 4 for feeding power to the plug duct is attached at an appropriate position in the length direction, and is connected to the power feeding terminal 2X in the box. 2'is a power feeding part, 3 is a suspension band, and 3a is a fixing bolt.

[0004]

By the way, the above-mentioned conventional power supply unit attached to the plug duct is generally of a fixed type, and when the power supply unit is attached at an appropriate position in the length direction of the plug duct, the power supply unit becomes simple. Cannot be relocated to. Generally, it is provided near the center in the longitudinal direction in consideration of the load X arranged and connected along the plug duct.

However, the loads X are not necessarily arranged at equal intervals along the length direction, and for example, as shown in FIG. 6A, one half of the plug duct 1 is provided. It may occur that the parts must be densely arranged. As described above, when there is a possibility that an overload may occur due to a voltage drop and a current balance failure on one side of the plug duct 1 due to an increase in load after the plug duct 1 is laid, as shown in FIG. ), A new plug duct is installed to distribute the load,
Current balance and voltage drop had to be improved.

For this reason, the merit of the simple and flexible plug duct is halved, and various inconveniences such as increase in equipment, cost, and securing of arrangement space are caused.

In the present invention, in consideration of the problems associated with the above-mentioned conventional fixed type power supply unit for plug duct, the portion of the power supply unit to be connected to the plug duct conductor is connected and attached using an elastic clip. It is an object of the present invention to provide a power supply unit structure for a plug duct that can be moved in the length direction of the plug duct even afterward and can cope with a voltage drop, a decrease in current balance, and the like due to the addition of a load.

[0008]

As a means for solving the above problems, the present invention provides a connecting conductor in a holding member that can be inserted between conductor gaps in a plug duct, and the plug duct is provided at one end of the connecting conductor. This is a plug duct power supply part structure in which a clip elastically fittable to a conductor is connected and fixed by a number corresponding to the plug duct conductor array, and a power supply terminal is formed at the other end.

[0009]

In the plug duct power feeding portion of the present invention having the above-described structure, the lower portion of the plug duct is generally open, and the plug duct is inserted and attached from the open portion. When the clip of the power feeding portion is elastically fitted to the conductor of the plug duct to make an electrical connection, the connection can be surely made in a state where the electrical contact resistance is reduced.

When a load is added after mounting and connection, the power feeding portion can be easily moved to a position in which load balance is taken into consideration, which improves voltage drop and current balance drop.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a power supply part 2 of the embodiment as a plug duct 1.
FIG. 3 is an overall schematic view of a state in which it is attached to the. The power feeding part 2 is inserted between the conductor gaps of the plug duct 1, and the terminal 2d thereof projects into the power feeding box 4 suspended from the plug duct 1 by the band 3. The terminals 2d are connected by a connecting bar 5, a CT (current transformer) 6 and an ammeter 7 are attached in the middle of the connecting bar 5, and a CV cable 8 is connected to the end thereof. A bus duct 10 is connected to the end of the cable 8 via a breaker 9, and power is supplied from the bus tact 10 to the plug duct 1.

FIG. 2 shows a main cross section in which the power feeding portion 2 is attached to the plug duct 1. The power feeding portion 2 has a connecting conductor 2b provided inside a holding member 2a which can be inserted between the conductors 1a and 1a of the plug duct 1, and elastically fitted to the plug duct conductor 1a at one end of the connecting conductor. A flexible clip 2c is connected and fixed, and a power supply terminal 2d is formed at the other end.

As shown in FIG. 2, the holding member 2a is made of an insulating material made of molding resin, has a width that allows it to be inserted between the plug duct conductors 1a and 1a, and has a clip 2c when set. An electrical connection can be made by sandwiching the plug duct conductor. When setting, as shown in FIG. 3, the holding member 2a is inserted from the bottom surface of the plug duct in a state in which the 90 ° phase is on the front side, and is rotated 90 ° after the insertion to be connected in the state of FIG.

The clip 2c is made of phosphor bronze or spring steel, and is made of a material having a spring function and capable of reducing the electrical contact resistance between the plug duct conductor and the clip. The clips 2c, the connecting conductors 2b, and the terminals 2d have the same number, and the number corresponding to the plug duct conductor 1a is provided (three in this embodiment).

Further, as shown in FIG. 1, two sets of the power feeding parts 2 are set in the power feeding box 4 so that the plug duct conductors 1a, 1a in the left and right rows can be branched to supply power.

The power feeding unit 2 of the embodiment having the above-mentioned structure is shown in FIGS.
As described above, it is attached to an arbitrary position of the plug duct as described above. Since the clip 2c has a spring function, it can be reliably electrically connected to the plug duct conductor 1a with a reduced electrical contact resistance.

If it is necessary to add a large number of loads along the length of the plug duct, as shown in FIG. 4, in order to prevent overload due to voltage drop and poor current balance. The mounting position of the power feeding unit 2 is moved from the dotted line position to the solid line position. This position movement is
Since the clip 2c has elasticity, it can be easily implemented.

[0019]

As described in detail above, in the plug duct power feeding portion of the present invention, since the elastic pinchable clip is connected and fixed to the holding member containing the connecting conductor, it remains attached even after being inserted and connected to the plug duct. By shifting the position, the connection position can be moved freely, and by moving it to an arbitrary position according to the load expansion situation, it is possible to eliminate the voltage drop in the plug duct and the overload due to poor current balance. Play.

[Brief description of drawings]

FIG. 1 is an overall schematic view of a state in which a power supply unit for a plug duct of an embodiment is attached.

FIG. 2 is a detailed cross-sectional view of a power supply unit according to the embodiment.

FIG. 3 is a diagram illustrating a mounting method.

FIG. 4 is an explanatory diagram of operation

FIG. 5 is a detailed cross-sectional view of a conventional power supply unit for a plug duct.

FIG. 6 is an explanatory diagram of problems

[Explanation of symbols]

 1 Plug duct 2 Power supply section 3 Band 4 Power supply box 5 Connecting bar 6 CT 7 Ammeter 8 CV cable

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kunio Togawa Kunio Togawa Nobunta, Tauraminato-cho, Yokosuka City, Kanagawa Kanto Automobile Industry Co., Ltd. (72) Inventor Seizo Ichimura 2 at 20 Toda, Kitagawara, Itami City Asahi Metal Seiko Co., Ltd.

Claims (1)

[Claims] 1. A plug duct conductor array in which a connecting conductor is installed in a holding member that can be inserted between conductor gaps in a plug duct, and a clip elastically fitted to the plug duct conductor is provided at one end of the connecting conductor. The power supply structure for a plug duct is formed by connecting and fixing a number of terminals corresponding to the above, and forming a power supply terminal at the other end.