JPH0648172U - Structure of line side terminal of insulator with built-in arrester - Google Patents

Abstract

(57) [Abstract] [Purpose] When installing an electric wire between the terminal plate and the terminal contact plate, there is no risk of the terminal contact plate falling, and it is efficient to install the wire at a high place. (EN) Provided is a structure of a line side terminal of an insulator with a built-in lightning arrester. [Structure] A terminal bracket 1 having an upper surface formed in a concave groove 5, a tightening bolt 4 mounted in a bolt hole 7 formed in one wall 6 of the concave groove 5 of the terminal bracket 1, and the tightening bolt. The bolt 4 is provided with a connection fitting 3 attached to the center of the tip thereof, and a terminal contact plate 2 which is inserted through the connection fitting 3 and slidably provided in the groove 5 by the tip of the tightening bolt 4. , The surface of the terminal contact plate 2 on the tip side of the connection fitting 3 and the wall 8 surface of the terminal receiving metal 1 facing this surface, the covered electric wire L.
Mounting grooves 9 and 13 are formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a line side terminal of an insulator with a built-in arrester.

[0002]

[Problems to be solved by conventional techniques and devices]

 Conventionally, the line-side terminal 21 shown in FIG. 3 is attached to the line side of the insulator with a built-in arrester. To connect a covered electric wire (hereinafter referred to as an electric wire) L to the line side terminal 21, remove the terminal contact plate 24 fixed to the L-shaped terminal receiving metal 22 shown in the figure with the tightening bolt 23. First, the electric wire L is applied to the electric wire mounting groove 25 of the terminal receiving plate 22, and then the electric wire mounting groove 26 of the terminal contact plate 24 is applied to the electric wire L to sandwich the electric wire L between the electric wire mounting grooves 25 and 26. The tightening bolt 23 is tightened and fixed from the terminal contact plate 24 side to the terminal receiving plate 22.

In the above-mentioned conventional line-side terminal 21 of the lightning arrester with built-in lightning arrester, the terminal contact plate 24 is fixedly set to the terminal receiving metal 22 with the tightening bolts 23. Therefore, when connecting to the electric wire L, the terminal receiving metal 22 It is necessary to remove the terminal contact plate 24 from the terminal once, which takes time, and there is a risk that the terminal contact plate 24 removed when the wire L is pinched is accidentally dropped.

Therefore, the present applicant has conducted research to solve the above-mentioned problems, and previously investigated the structure of the line-side terminal 21 shown in Japanese Utility Model Laid-Open Nos. 63-129971 and 63-198172. Developed and proposed these.

Although the above-mentioned proposal has been confirmed to have some effects, a subsequent development has a structure different from that of the above-mentioned proposal and is capable of solving the above-mentioned problems. Since we have developed the structure of, here is what we provide.

[0006]

Means for Solving the Problems The present invention has been made in view of the above circumstances, and its gist is to provide a terminal receiving member having an upper surface formed in a concave groove, and a concave groove of the terminal receiving metal. Tightening bolt attached to a bolt hole formed in one wall, a connecting metal fitting attached to the center of the tip of this tightening bolt, and inserting the connecting metal fitting and the tip of the tightening bolt into the concave groove. A terminal contact plate that is slidably mounted on the front surface of the connection fitting, and the covered wire is mounted between the surface of the terminal contact plate on the tip side of the fitting and the wall surface of the concave groove of the terminal plate facing this surface. It is the structure of the line side terminal of the insulator with a built-in arrester in which a groove is formed.

[0007]

[Action]

 The terminal contact plate is provided so that it can be slid in the groove of the end plate by inserting the connecting metal fitting attached to the center of the tip of the tightening bolt. Even though it is held in the groove of the terminal receiver, there is no risk of dropping. Moreover, after inserting the electric wire into the mounting groove, the electric wire can be attached simply by tightening the tightening bolt without aligning the terminal contact plate. Further, since the connecting tool is attached to the center of the tip of the tightening bolt and the tip of the connecting fitting projects into the wire mounting groove, tightening the tightening bolt can surely and easily break the wire coating. Can be connected.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front sectional view of an embodiment of the structure of the line-side terminal of an insulator with a lightning arrester according to the present invention, and FIG. 2 is a top view showing a part of FIG. 1 is a terminal receiving metal, 2 is a terminal contact plate, 3 is a connecting metal fitting, and 4 is a tightening bolt.

The terminal metal receiving member 1 has a groove 5 formed on the upper surface thereof, one wall 6 forming the groove 5 is provided with a bolt hole 7 into which the tightening bolt 4 is screwed, and the other wall. A semi-arcuate mounting groove 9 for mounting the electric wire L 1 is formed at 8. Further, a leg 10 is provided at the center of the lower surface, and a screw 11 is formed at the tip of the leg 10, and the screw 11 is connected to the inside of a lightning arrester built-in insulator (not shown).

The terminal contact plate 2 is made of a metal such as a copper alloy and is formed in a flat plate shape. A through hole 12 for inserting the connection fitting 3 is formed in the center, and a plate surface on one end side of the through hole 12 is formed. A semi-circular arc-shaped mounting groove 13 for mounting the electric wire L having the same shape as the semi-circular arc-shaped mounting groove 9 formed on the wall 8 is formed on the inner surface.

The connecting fitting 3 is formed by forming a round bar 15 at the rear end of a square bar having a square cross section such as a copper alloy, and forming the other in a round bar 15. Is a tapered surface, and a circular blade facing the center is formed at the tip of the round bar 15.

The tightening bolt 4 has a square square hole 16 formed in the center of the tip end surface thereof, and the square rod portion 14 of the connecting fitting 3 is inserted into the square hole 16. As a result, the connection fitting 3 is attached to the tightening bolt 4 in a non-rotating state.

In the above-mentioned structure of the line-side terminal, the electric wire L of FIG. 1 is assembled in advance before being attached to the electric wire L. That is, the terminal contact plate 2 with the fitting 3 inserted in the through hole 12 is provided in the groove 5 of the terminal receiving metal 1, while the tightening bolt 4 is attached to the bolt hole 7 of the wall 6 of the groove 5. It is assembled by tightening the tightening bolt 4 into the square hole 16 at the tip until the square rod portion 14 of the connecting fitting 3 is inserted.

Therefore, in order to connect the electric wire L, first, the tightening bolt 4 is loosened, and the electric wire L is connected between the wall 8 and the terminal contact plate 2 from above from above so that the electric wire L can be inserted between the mounting grooves 9 and 13. The terminal contact plate 2 is retracted together with the metal fitting 3. Next, the electric wire L is inserted between the mounting grooves 9 and 13 from above between the wall 8 and the terminal contact plate 2, and then the tightening bolt 4 is tightened. Due to this tightening, the terminal contact plate 2 advances toward the wall 8 and clamps the wire between the mounting grooves 9 and 13, while the connection fitting 3 rotates with the tightening bolt 4 and breaks the wire L coating. Be connected. Further, when the terminal backing plate 2 is moved backward and forward or when the electric wire L is loaded, the terminal backing plate 2 is supported by the connecting fitting 3 loaded in the through hole 12, and therefore falls from the concave groove 5. There is no such thing.

In the above embodiment, the fitting 3 is attached to the tightening bolt 4 by fitting the square hole 16 and the square rod portion 14, but the present embodiment is not limited to this example. Instead, it may be, for example, a threaded form, or may be a round hole and a round bar. However, in the latter case, since the connecting fitting 3 does not rotate, the covering is broken by pressing against the covering of the electric wire L, and the cutting edge formed at the tip of the connecting fitting 3 is sharply formed. There is a need.

[0016]

[Effect of device]

 As described above, according to the structure of the line-side terminal of the insulator with built-in lightning arrester according to the present invention, the terminal abutting plate is inserted into the concave groove of the terminal receiving plate by inserting the connecting fitting attached to the center of the tip of the tightening bolt. Since it is slidably mounted on the terminal, it is retained in the groove of the terminal receiving plate even if the tightening bolt is loosened to attach the wire and retracted, so there is no risk of dropping. Moreover, after inserting the electric wire into the mounting groove, the electric wire can be attached simply by tightening the tightening bolt without aligning the terminal contact plate. Further, since the connecting tool is attached to the center of the tip of the tightening bolt and the tip of the connecting fitting projects into the wire mounting groove, tightening the tightening bolt can surely and easily break the wire coating. Can be connected. Therefore, the work of connecting the electric wire to the wire-side terminal of the insulator with the lightning arrester can be efficiently performed at a high place.

[Brief description of drawings]

FIG. 1 is a front sectional view of an embodiment of a structure of a line-side terminal of an insulator with a lightning arrester according to the present invention.

FIG. 2 is a top view showing a part of FIG. 1 cut away.

FIG. 3 is a sectional view of a structure of a line-side terminal of a conventional insulator with a built-in arrester.

[Explanation of symbols]

1: Terminal money 2: Terminal contact plate 3:
Connection fitting 4: Tightening bolt 5: Recessed groove 6,
8: Wall 7: Bolt hole 9, 13: Mounting groove 10:
Leg 11: Screw 12: Through hole 14:
Square bar 15: Round bar 16: Square hole L:
Coated wire

Claims (1)

[Scope of utility model registration request] 1. A terminal receiving member having an upper surface formed in a concave groove, a tightening bolt attached to a bolt hole formed in one wall of the concave groove of the terminal receiving metal, and a center of a tip of the tightening bolt. The connecting metal fitting is provided, and the terminal metal fitting plate that is inserted through the metal fitting and is slidable in the groove by the tip of the tightening bolt is provided. A structure of a line-side terminal of a lightning arrester with a built-in lightning arrester, wherein a mounting groove for a covered electric wire is formed between a surface and a wall surface of a concave groove of a terminal receiving metal facing the surface.