JPS645753B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power supply terminal device used to supply power from an electrically conductive insulated wire.

When power company workers install measuring equipment to measure electrical quantities such as current, voltage, and power on outdoor power distribution lines, they must install measuring equipment on outdoor power distribution lines to avoid power outages to a wide range of power consumers. Normally, power is brought into the measuring instrument via an electric wire.

Conventionally, the method of bringing in power to a measuring instrument is to strip the insulation coating of a live power distribution line (insulated wire) with a knife, and wrap a thin power supply wire around the bare core wire to connect it to the measuring instrument. Power is being supplied.

This conventional work method has the disadvantage that the knife hits the bare wire portion of the power distribution line, which is in a energized state, and the worker is constantly exposed to the risk of electric shock. This invention was made in order to eliminate the drawbacks of the conventional methods as described above, and provides a safe power supply terminal device that can supply power to a measuring instrument without touching the bare wires of the live distribution line. is intended to provide.

An embodiment of the present invention will be described below based on the drawings. In FIGS. 1 to 3, reference numeral 1 indicates an electrically insulated wire in an energized state, and is composed of a core wire 1a and a covering 1b. Reference numeral 2 denotes a cover portion, which has a hollow cylindrical shape, and a female thread 3 is provided inside the cylinder. Further, a push rod 4 is protruded from the center of the cover part 2, and after the push rod 4 is passed through the rotation hole 5a of the L-shaped connector 5, a press plate 6 is rotatably attached to the tip of the push rod 4. Press-fitted. Further, the upper surface of the cover portion 2 has a threaded groove 7 to which a thumbscrew 8 for preventing loosening is attached. On the other hand, the other end of the L-shaped connector 5 is pivotally connected to the base 10 by a pin 9. This base part 10 has a U-shaped wire insertion hole 1 in the center.
1, and has a male screw portion 12 on the outer periphery, and a needle electrode 13 is installed on the bottom surface of the U-shaped wire insertion hole 11 and is electrically connected to a lead wire 14. That is, a screw 15 is provided at one end of the needle electrode 13, and a crimp terminal 17 of a lead wire 14 is fixed with a nut 16. Also, the threaded portion 1 of this needle-like electrode 13
5. The metal parts of the crimp terminal 17 and the nut 16 are fixed to the base part 10 with a filler 18 such as epoxy and are insulated from the outside to eliminate the risk of electric shock. The L-shaped connector 5 has a structure that allows it to rotate more than 90 degrees about the pin 9.

Next, the operation will be explained. When installing the above power supply terminal device on a power distribution line, remove the cover part 2 from the base part 10 (the state shown in FIG. 3), insert the electric wire 1 into the U-shaped electric wire insertion hole 11 of the base part 10, and then When the screws of the base part 10 are engaged and tightened, the needle-shaped electrode 13 of the base part 10
breaks through the sheath 1b of the covered wire 1 and hits the core wire 1a, allowing power to be taken in (the state shown in FIG. 4). By the way, at this time, cover part 2 and base part 1
0 is fixed by the engagement of the female threaded portion 3 and the male threaded portion 12, but if this threaded portion is only engaged for a long time, it may become loose due to wind and rain, temperature changes, vibrations, etc. Therefore, in order to prevent this loosening, cover part 2 and base part 1
0, and then tighten the locking thumbscrew 8 at a position where it does not touch the L-shaped connector 5 as shown in Figures 4 and 5. When the cover part 2 loosens and rotates, the L-shaped This thumbscrew 8 hits the connector 5, resulting in a structure in which the cover part does not loosen beyond a certain angle.

In the above embodiment, the power supply insertion hole is U-shaped, but the effect is the same even if the bottom of the insertion hole is V-shaped. Further, although the explanation has been made using one needle-like electrode 13, reliability can be improved by installing a plurality of needle-like electrodes 13.

As described above, according to the present invention, since the cover part and the base part are connected by the L-shaped connector,
Since the cover part does not fall off during handling and the L-shaped connector also serves as a stopper for the locking wing screw of the cover part, it is possible to provide an inexpensive and highly reliable power intake terminal device.

[Brief explanation of drawings]

Each drawing shows an embodiment of the present invention.
Fig. 1 is a perspective view, Fig. 2 is a perspective view showing an L-shaped connector, which is one part thereof, Fig. 3 is a sectional view, Fig. 4,
FIG. 5 is a sectional view and a plan view for explaining the operation. In the figure, 1 is an insulated wire, 1a is a core wire, 1b is a coating, 2 is a cover part, 3 is a female thread part, 4 is a holding bar, 5 is an L-shaped connector, 6 is a holding plate, 8 is a locking screw, 9 is a pin, 10 is a base portion, 11 is a U-shaped electric wire insertion hole, 12 is a male screw portion, and 13 is a needle electrode.

Claims (1)

[Claims] 1. A needle-like electrode is provided at the bottom of a groove provided in the base of the electrical insulator, and a pusher is inserted into the groove at the center of the cover that is screwed into the base. A protruding rod is provided, and power is taken in by pressing a energized insulated wire against the needle-shaped electrode via the push rod, wherein an L-shaped connector is pivotally mounted on the base portion, and , this connector is slidably inserted into the push rod of the cover part,
A power supply terminal device characterized in that a locking screw is provided at the upper end of the cover portion to serve as a stopper for preventing rotation of the L-shaped connector. 2. The power supply terminal device according to claim 1, wherein a presser plate is rotatably attached to the push rod of the cover portion at its tip to lock an L-shaped connector.