JPS647575Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connecting device for connecting a transformer side to a building and other electric circuits in a switch installed on a utility pole, for example.

Conventionally, these types of connections often require tools such as spanners or screwdrivers, as well as parts such as set screws, to operate and handle, making the work cumbersome and dangerous when working at heights. There were also concerns about resistance to external forces, such as loosening of the connection when tension was generated in the overhead wire due to wind pressure or the like after connection.

The present invention eliminates the above-mentioned disadvantages of the conventional method, and makes the connection operation easy and simple without requiring tools, etc., making it easier to work at high places.
Moreover, in order to make the connection accurate and robust and prevent the occurrence of loosening due to external force, one of the electric wires to be connected is attached to one end of the connecting tube 1 made of conductive metal and having a wire insertion hole 2 in the center. The connecting piece 3 is attached, and the other end of the connecting tube 1 is formed into a conical inclined part 1a whose diameter gradually increases toward the tip, and the end is divided into a plurality of free pieces 5 by a groove 4 in the axial direction. ,
A flange plate 6 having a through hole 7 inscribed in the small diameter portion of the conical inclined portion 1a is fitted, and is pressed by an elastic spring 8 to the large diameter portion of the conical inclined portion 1a.

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

In the drawings, reference numeral 1 denotes a connecting tube made of a conductive metal material and having a wire insertion hole 2 in the center; in the illustrated example, the insertion hole 2 passes through the entire length of the connecting tube 1, and most of the tube is formed into a spiral tube. Show what you did.

The connecting piece 3 of one of the electric wires a to be connected is attached to one end of the connecting tube 1, that is, the spiral tube portion, and fixed with a nut 9, and the other end of the connecting tube 1 is a conical inclined portion whose diameter gradually increases toward the tip. 1a, and an axial groove 4 is provided at the end to form four free pieces 5 that can bend inwardly and outwardly as shown in FIG. 2, but the number of free pieces 5 is can be increased or decreased arbitrarily.

A through hole 7 is provided on the small diameter side of the conical inclined portion 1a of the connecting tube 1.
A flange plate 6 which is internally fitted is provided, and a resilient spring 8 is applied to the inside of the flange plate 6 to press the flange plate 6 toward the large diameter portion of the conical inclined portion 1a, tighten each loose piece 5, and open the insertion hole. 2, and the inner circumferential surface of the opening end on the conical inclined portion 1a side of the center insertion hole 2 is formed into a rough surface portion 10 with small uneven stripes to ensure the retention of the electric wire inserted into the insertion hole 2. I made it.

As shown in the figure, the connecting device according to the present invention inserts a connecting tube 1 into an insulating substrate A of a casing installed on a telephone pole, etc., and fixes it immovably with a connecting member 11 such as a washer or a nut. A connecting piece 3 to which one electric wire a to be connected is tied is attached in advance with a nut 9 or the like. To connect the other wire b, push the collar plate 6 with your finger against the spring 8 and move it inward from the conical slope 1a of the connection tube 1, and the free piece 5 will be released from its restraint. Since it opens freely outward, the electric wire b can be easily inserted from the open end of the through hole 2, and when the finger is released after insertion, the loose piece 5 is tightened by the return movement of the collar plate 6 by the spring 8, and the electric wire b is inserted. It can be securely bound and connected to the other wire a through the connecting tube 1, and if the collar plate 6 is made relatively large compared to the connecting tube 1, it can be easily pressed inward with a finger. can be easily done.

Incidentally, in order to release the connection, if the collar plate 6 is pushed in against the spring 8, the restraint by the free piece 5 is released, so that the electric wire b can be easily pulled out. Also, insertion hole 2
If the end of the electric wire b inserted therein is bent to one side as shown in the figure, it can be further prevented from being pulled out after tying.

In this way, according to the present invention, in order to connect the other wire b to the connecting tube 1 to which the connecting piece 3 of one wire a to be connected is tied in advance, the collar plate 6 is simply pressed with a finger. Push it in against the spring 8, and with your other hand insert the wire b into the insertion hole 2 whose open end is now free to open due to the movement of the collar plate 6. When you release your finger, the spring 8 is released.
The electric wire b can be reliably tightened and connected by the loose piece 5 at the end of the connecting tube 1 due to the automatic return of the collar plate 6 due to the explosion of the electric wire b, which does not require tools such as a spanner or a screwdriver. It is extremely easy to operate without using set screws, etc., and the connection is accurate, making it easy to work in high places such as on poles, and because it relies on the tightening action of the loose piece 5, it can also be applied to wires with different diameters. Furthermore, the connection can be easily released by simply pressing the flange plate 5.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a front view, and FIG. 3 is a cutaway side view. 1... Connection tube, 2... Wire insertion hole, 3... Connection piece, 4... Division groove, 5... Free piece, 6... Flange plate, 7
...Through hole, 8...Bullet spring.

Claims (1)

[Scope of utility model registration request] Attach the connecting piece 3 of one of the wires to be connected to one end of a connecting tube 1 made of conductive metal and having a wire insertion hole 2 in the center, and gradually increase the diameter of the other end of the connecting tube 1 toward the tip. The conical inclined part 1a is divided into a plurality of free pieces 5 by an axial groove 4, and a flange plate 6 is provided with a through hole 7 inscribed on the small diameter side of the conical inclined part 1a. An electric wire connector is formed by fitting the wire connector and pressing it against the large diameter side of the conical inclined portion 1a by a resilient spring 8.