JPH046123Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications This idea relates to an arrester.

BACKGROUND ART FIG. 6 is a cross-sectional view of a conventional arrester in which electric wires are connected to line-side terminals. When connecting electric wires to the track side terminals of conventional arresters, remove the terminal cover plate 20 fixed to the L-shaped terminal holder 10 with bolts 30 as shown in FIG. The electric wire holding recess 14 of the terminal holder 40 is applied, and then the electric wire holding recess 24 of the terminal patch plate 20 is applied to the electric wire 40, and both electric wire holding recesses 14,
The wire 40 was sandwiched between the wires 24 and then the terminal cover plate 20 was fixed to the terminal holder 10 with the bolt 30 to complete the connection of the wire 40.

Problems that the invention aims to solve When connecting electric wires to the line side terminal of the arrester as described above, it is necessary to once remove the terminal cover plate from the terminal holder, which takes time, and the removed terminal There was a risk of the patch plate tipping over and falling off. The present invention was developed in view of the above circumstances, and the purpose is to provide a structure for the line side terminal of an arrester that allows the connection of electric wires in a short time and easily, and that prevents the terminal cover plate from falling. There is.

Means for Solving the Problems The structure of the line side terminal of the arrester of the present invention includes a terminal holder, a terminal patch plate, a bolt for fixing the terminal patch plate to the terminal holder, and a washer for the bolt. The terminal holder is formed with a screw hole for the bolt and a recess for holding the electric wire, a protrusion is formed in the recess, and the terminal cover plate has a screw hole formed in the screw hole. Opposing substantially oval bolt holes are formed in a substantially diagonal direction, and further, positioning means is formed on the terminal holder and the terminal patch plate, and the lateral dimension of the terminal patch plate is formed. It is characterized by being shorter than the vertical dimension by approximately the diameter of the electric wire.

Action Loosen the bolt that fixes the terminal cover plate to the terminal bracket, turn the terminal cover plate approximately 90 degrees to the left, press the wire into the wire holding recess in the terminal bracket, and rotate the terminal cover plate to the right. Turn the wire approximately 90 degrees to sandwich the wire between the wire-holding recess of the terminal holder and the wire-holding recess of the terminal cover plate, then set the position of the terminal cover plate using the positioning means and tighten the bolt. .

Embodiment FIG. 1 is an exploded perspective view of an embodiment of the structure of the electric wire and the line-side terminal of the arrester according to the present invention, and FIGS.
A plan view, Fig. 3 is a perspective view when the terminal cover plate is rotated approximately 90 degrees to the left, Fig. 4 is a perspective view showing the state in which electric wires are connected to the line side terminal of the arrester, and Fig. A vertical cross-sectional side view of the figure is shown. In these figures, the same or equivalent parts as in FIG. 6 are given the same reference numerals.

In FIG. 1, a terminal holder 10 made of metal such as copper and formed into a substantially L-shape has a screw hole 12 at approximately the center of the vertical surface, and a screw hole 12 at the bottom of the vertical surface for attaching the wire to be held. An electric wire holding recess 14 is formed with a curvature corresponding to the diameter, and a protrusion 13 is formed in the electric wire holding recess 14. Furthermore, a leg 15 is formed protruding from the lower surface of the bottom of the L-shape, and a screw 16 is formed at the tip of the leg 15. The tip of the leg 15 is connected to the inside of the arrester by a screw 16 and a nut (not shown).

A substantially elliptical bolt hole 22 is formed in a substantially diagonal direction in a substantially central portion of a terminal patch plate 20 made of metal such as copper and formed into a flat plate shape.

30 is a bolt for fixing the terminal patch plate to the terminal holder, and 31 is a washer for the bolt.

As a means for aligning the terminal holder 10 and the terminal patch plate 20, there are alignment protrusions 11 near the corners of the terminal holder 10, and the terminal patch plate 20 has alignment protrusions 11 corresponding to the alignment protrusions 11. An alignment aperture 21 is formed.

Note that the horizontal dimension f of the terminal patch plate 20 in FIG. 2 is shorter than the vertical dimension e by approximately the diameter of the electric wire 40.

Next, the process of connecting the electric wires to the line side terminals of the arrester will be explained. Usually, before electric wires are connected, the terminal cover plate 20 is rotated in the direction of arrow A in FIG. There is.

To connect the wires, first loosen the bolts 30 slightly, pull out the terminal patch plate 20 toward you, pull out the alignment hole 21 from the alignment protrusion 11, and then pull the terminal patch plate 20 to the left about 90 degrees. Rotate the bolt hole 2 and lift it upward to make the approximately oval bolt hole 2.
The bolt 30 passes through the lower end of the bolt 2 (FIG. 3). At this time, as mentioned above, the horizontal dimension f of the terminal pad 20 is shorter than the vertical dimension e by the diameter of the wire 40, so the wire 40 is placed below the terminal pad 20 and in front of the wire holding recess 14 of the terminal holder 10. This creates a space that can be introduced horizontally. Next, the electric wire is pressed against the electric wire holding recess 14 of the terminal patch plate 20.
At this time, the prong needle 13 penetrates the insulator 41 of the electric wire 40 and sticks into the conductor 42, causing the terminal holder 10 and the electric wire 40 to
conducts.

In this state, turn the terminal holder 10 approximately 90 degrees to the right and hold the wire 40 in the wire holding recess 24 of the terminal patch plate 20, fit the alignment hole 21 into the alignment protrusion 11, and then tighten the bolt 30. By tightening, the connection of the electric wire 40 to the line side terminal of the arrester is completed (FIG. 4).

Effects of the Invention As explained above, according to the present invention, the terminal patch plate has an oval bolt hole, the terminal holder and the terminal patch plate are provided with positioning means, and the horizontal dimension of the terminal patch plate is changed from the vertical dimension. By making the wire shorter by approximately the diameter of the wire, a structure of the line side terminal of the arrester can be obtained in which the wire can be easily connected in a short time and the terminal cover plate does not drop.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of an embodiment of the structure of electric wires and line-side terminals of the arrester according to the present invention; The figure is a perspective view when the terminal cover plate is rotated approximately 90 degrees to the left, Figure 4 is a perspective view showing the state in which the wires of the arrester's track side terminal are connected, and Figure 5
The figure shows a side view of FIG. 4, and FIG. 6 shows a cross-sectional view of a conventional arrester with electric wires connected to the line-side terminals. 10... Terminal holder, 11... Positioning protrusion, 12... Screw hole, 13... Needle, 14, 24
...Concavity for holding electric wire, 20...Terminal patch plate, 21
... Positioning hole, 22 ... Bolt hole, 30
...Volt, 40...Wire, 41...Insulator, 4
2...Conductor.

Claims (1)

[Scope of utility model registration request] It is equipped with a terminal holder, a terminal cover plate, a bolt for fixing the terminal cover plate to the terminal holder, and a washer for the bolt, and the terminal holder has a screw hole for the bolt and a screw hole for holding the wire. A recess is formed, a protrusion is formed in the recess, and a substantially oval bolt hole facing the screw hole is formed in the terminal pad in a substantially diagonal direction, Further, the terminal holder and the terminal patch plate are formed with positioning means, and the horizontal dimension of the terminal patch plate is shorter than the vertical dimension by approximately the diameter of the wire. Terminal structure.