JPH0316617U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of an embodiment of the present invention, Fig. 2 is a partially cutaway side view of the bushing device of the same embodiment with a temporary wire connected to it, and Fig. 3 The figure shows a top view with the insulator cap removed and a part cut away, showing the state in which the main line is connected to the bushing device of the same embodiment. Figure 4 shows the connection between the insulator cap and the insulator pipe with the insulator cap attached. FIG. 5 is an enlarged sectional view showing the engaging part, and FIG. 5 is an explanatory diagram showing the steps for replacing the main line while continuing to supply electricity to the low voltage side of a transformer equipped with the bushing device of the present invention. , 6th
The figure is a partially cutaway front view of the conventional example.
This figure is a cross-sectional view of a main part showing a state in which electric wires are connected to the bushing device of FIG. 6. 10...Insulator, 11...Head, 12...Lower neck, 13
... recess, 13c... first electric wire insertion hole, 13c'...
Second electric wire insertion hole, 16...Terminal fitting, 17...First
core wire tightening screw, 17'...second core wire tightening screw,
18... Electric wire connector, 20... First core wire insertion hole, 2
0'...Second core wire insertion hole, 25...Rubber bush for main wire, 25'...Rubber bush for temporary wire, 30...Insulator cap, L...Main wire, L'...Temporary wire.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An insulator tube having a recess at one end that opens in the axial direction, an electric wire connector provided in the recess, and a detachable insulator cap that closes the opening of the recess. In the bushing device, a first electric wire insertion hole and a second electric wire insertion hole are opened on opposite sides of the insulator tube through a wall around the concave portion of the insulator.
an electric wire insertion hole, and the electric wire connector has first and second core wire insertion holes into which the core wires of the electric wires passed through the first and second electric wire insertion holes can be individually inserted. The terminal fitting is in communication with the first and second core wire insertion holes, and is screwed into a screw hole provided in the terminal fitting to tighten the core wires in the first and second core wire insertion holes, respectively. A bushing device comprising first and second core wire tightening screws. (2) According to claim 1, the first electric wire insertion hole and the first core wire insertion hole are provided two each, and the second electric wire insertion hole and the second core wire insertion hole are provided one each. The bushing device described. (3) The two first electric wire insertion holes and the first core wire insertion hole are provided so as to extend substantially parallel to each other on a plane perpendicular to the axis of the insulator tube, and the two first electric wire insertion holes and the second core wire insertion hole 3. The bushing device according to claim 2, wherein the core wire insertion hole is provided parallel to the first core wire insertion hole along a line bisecting the space between the two first core wire insertion holes. (4) The two first core wire tightening screws are
A total of four first core wire tightening screws, two for each of the core wire insertion holes, are arranged so as to be located at each of the four vertices of the rectangle, and one second core wire tightening screw is provided for each of the core wire insertion holes. 4. The bushing device according to claim 3, wherein the bushing device is provided with only one line and arranged at an intersection of diagonal lines of the rectangle.