JPH08185741A - Conductive metal fitting for power transmission and distribution - Google Patents

Abstract

PURPOSE: To prevent the occurrence of radio interference caused by a potential discharge with simple execution by inserting a conductive metal fitting made of a forked plate spring into the gap between the base bottom of the clevis section of an insulator or a clamp metal and the tip of the I-section of another apparatus. CONSTITUTION: This conductive metal fitting 1a is made of a belt-like spring having a width slightly smaller than the width of the clevis section (b) of an insulator A or an anchor clamp metal B, and tip portions of the long pieces 3a, 4a extended in the same direction from a forked base section 2a are bent in opposite directions to each other. The tips of the long pieces 3a, 4a are tapered, and the cross section of the long piece 4a is formed into an outwardly protruded shape. The tip sections of both long pieces 3a, 4a are inserted into the gap between the I-section (a) of the insulator A and the clevis section (b) of the clamp metal B connected by a pin P, and the long pieces 3a, 4a are pressed to the base bottom of the clevis section (b) and the outer edge of the I-section (a) and are conducted. A tongue piece protruded in the direction perpendicular to the longitudinal direction may be provided on the base section 2a, and it serves as a stopper at the time of insertion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to power transmission and distribution metal fittings, for example, insulators and clamp fittings, insulators and other insulators,
Also, the present invention relates to a conductive metal fitting for power transmission and distribution for electrically connecting them to prevent the occurrence of radio interference due to a potential difference discharge between an insulator and a strap fitting or the like.

[0002]

2. Description of the Related Art The connection between an insulator and another insulator, the connection between an insulator and a clamp metal fitting, or the connection between an insulator and a strap metal fitting has a property that electrical contact is liable to occur due to contamination, oxidation corrosion, etc. are doing. as a result,
In addition to the inherent capacitance of the insulator itself, a poor electrical contact may cause a potential difference discharge at the above-mentioned connecting point, which may cause radio interference in the surrounding TV, radio, and other wireless communication devices. In particular, a distribution line generally has a low wire tension, has a large fluctuation in the potential difference at the above-mentioned connecting point, and has a characteristic that radio interference is likely to occur. For this reason, conventionally, conductive fittings for power transmission and distribution (hereinafter referred to as conductive fittings) for reducing the potential difference have been used at the above-mentioned connecting points.

As a conventional conductive metal fitting, for example, when inserting the eye portion of an insulator (hereinafter referred to as I portion) into the clevis portion of another insulator and connecting the I portion and the clevis portion via a pin. At the connecting point, a split washer is inserted into a pin located in the gap between the I part and the clevis part so that the I part and the clevis part are electrically connected (actually, see 53-2.
7499 or Japanese Utility Model Laid-Open No. 4-66727).

Further, the conductive metal fitting disclosed in Japanese Utility Model Publication No. 60-39948 is provided with a body to be fitted into the rod portion of section I and a terminal piece on the body, and a lead wire is connected to the terminal piece. So that it is connected to the clamp metal fittings.

[0005]

However, in the case of the above-described conventional metal fittings for the split washer, the parallel-arranged I
Since the washer must be inserted in the small gap between the clevis and the clevis, it may be difficult to insert it if the connecting part of the I and clevis is tilted or if it is connected to one side of the gap. Although there is a difficulty in construction, and the split washer is surely connected to the pin, there is a problem that reliability is lacked because there is no guarantee that the I portion and the clevis portion are electrically connected.

Further, in the case of the above-mentioned conventional conductive metal fitting using a lead wire, the reliability of conduction is improved, but there is a drawback that the construction is complicated because the lead wire is connected.

In addition, both of the above have the drawbacks that they are unsuitable for hot-wiring work by an insulating tool or a robot because they have the above-mentioned difficulty in construction.

Therefore, the present invention has been made in order to solve the above-mentioned drawbacks, and an object thereof is to provide a conductive metal fitting which can be attached by a simple construction.

[0009]

In order to achieve the above object, a conductive metal fitting according to the present invention is used when an I portion of another material is connected to a clevis portion of a material such as an insulator or a clamp metal fitting through a pin. In the electrically conductive fitting for electrically connecting the clevis portion and the I portion, the electrically conductive fitting is formed of a bifurcated leaf spring inserted into a gap between the base of the clevis portion and the tip of the I portion. I am trying. Further, the leaf spring has a bifurcated base portion provided with a tongue projecting in a direction orthogonal to a longitudinal direction of the base portion.

[0010]

In the above structure, the conductive metal fitting is elastically inserted into the gap between the clevis portion and the I portion and not on the side where the pin is provided, so that the clevis portion and the I portion are electrically connected.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B show a conductive metal fitting 1a according to one embodiment. FIG. 1A is a front view thereof, and FIG. 1B is a side view thereof.

The conductive metal fitting 1a is formed of a U-shaped stainless steel plate having a strip-like spring characteristic and having a width slightly smaller than the width of the clevis portion B of the insulator A or the clamp metal fitting B which will be described later with reference to FIG. Is configured. That is, the conductive metal fitting 1a is configured by extending two long pieces 3a, 4a in the same direction from the bifurcated base 2a, and the central portions of both long pieces 3a, 4a are part I. It is formed so as to conform to the shape of the portion that comes into contact with the b and clevis portions (b), and the tip portions thereof are formed so as to curve in opposite directions. In addition, one side of the tip of the long piece 3a or 4a is formed to be tapered, and the cross-sectional shape of the long piece 4a is formed to be convex toward the outer side.

2 and 3 show the use state of the conductive metal fitting 1a. FIG. 2 is a front view thereof, and FIG. 3 is a plan view thereof. Here, a state is shown in which the I portion (a) of the insulator A and the clevis portion (b) of the retractable clamp metal fitting (in the figure, a clamp metal fitting; hereinafter referred to as a clamp metal fitting) B are connected by a pin P. In the figure, p is a pin for preventing the pin P from coming off.

The conductive metal fitting 1a has both long pieces 3a, 4 in the gap D between the I portion a and the clevis portion b orthogonal to the axial direction of the pin P.
It is inserted from the tip of a (the side opposite to the base 2a). As a result, the one long piece 3a is constantly in pressure contact with the base b'of the clevis portion b, and the other long piece 4a is always in pressure contact with the outer edge a'of the part I, thereby establishing continuity between the part I and the clevis part b. Is planned.

Moreover, since the conductive metal fitting 1a can be mounted by utilizing the spring restoring force only by inserting it into the relatively large gap D, it is easy to mount it by using an insulating tool at the time of hot line or by a robot. There is a feature that can be done. In addition, the conductive metal fitting 1a is pressed against the I-part a and the clevis part
Does not fall from the gap D due to the spring restoring force of the conductive metal fitting 1a itself.

4A and 4B show a conductive metal fitting 1b according to another embodiment. FIG. 4A is a front view thereof and FIG. 4B is a side view thereof. The same elements as those in the above embodiment are designated by the same reference numerals, and in this embodiment, "b" is added as a subscript.

The conductive metal fitting 1b according to this embodiment differs from the above-mentioned conductive metal fitting 1a in that the tips of the long pieces 3b and 4b are tapered from both sides, and the cross-section of the long piece 4b is long. Like 3b, it is flat. Therefore, the conductive metal fitting 1b according to the present embodiment has an advantage that it can be easily inserted into the gap D and can be easily manufactured because it does not have a convex shape.

FIG. 5 shows a conductive metal fitting 1c according to still another embodiment. FIG. 5 (a) is a front view thereof, and FIG. 5 (b) is a side view thereof. The same elements as those in the above-described embodiment are designated by the same reference numerals, and in this embodiment, “c” is added as a subscript.

The conductive metal fitting 1c according to this embodiment is particularly shown in FIG.
As shown in FIG. 7, the clevis portion B provided on the insulator cap fitting E is attached to the torsion strap fitting provided on the arm of the utility pole (not shown) (see FIG. 6).
Also, in FIG. 7, this mounting portion is also referred to as section I. Therefore, the term "I part" in the present invention includes such an attachment part. ) Both long pieces 3 for convenience when mounting
c and 4c are formed longer than the above-mentioned long pieces 3a, 3b, 4a and 4b. Further, the long piece 4c is formed to be curved longer than the other long pieces 3c so as to follow the curved surface of the cap fitting E.

Since the conductive metal fitting 1c according to the present embodiment has the long piece 4c along the curved surface of the cap metal fitting E, it can be particularly suitable for electrical connection with the cap metal fitting E.

8A and 8B show a conductive metal fitting 1d according to another embodiment. FIG. 8A is a front view thereof, and FIG. 8B is a side view thereof. The same elements as those in the above-described embodiments are designated by the same reference numerals, and in this embodiment, “d” is added as a subscript.

The conductive metal fitting 1d according to this embodiment is the same as that shown in FIG.
7 is the same as that shown in FIG. 7, except that the cross-section of the long piece 4d is formed in a convex shape toward the outer side to be strong and has a great restoring force. The point is that the tongues 2d 'and 2d' are extended from both sides of the base 2d.

The conductive metal fitting 1d according to this embodiment has a tongue piece 2
Since it has d'and 2d ', the gap D of the conductive fitting 1d
It can have the function of a stopper when inserted into.

[0024]

Since the conductive metal fitting according to the present invention comprises a bifurcated leaf spring inserted in the gap between the base of the clevis portion and the tip of the I portion, the connecting portion between the clevis portion and the I portion is rusted. Even if "rattle" occurs due to wind or the like, continuity is always maintained by the restoring force of the spring, so corona does not occur, and mounting is extremely easy. Furthermore, I part and clevis part Even if the connecting portion is tilted or deviated, there is no large change in the gap, so that it is easy to insert and can be applied to work by an insulating tool or a robot at the time of hot line. Further, when the tongue piece projecting in the direction orthogonal to the longitudinal direction of the base portion is provided on the bifurcated base portion of the leaf spring, the tongue piece has a function of a stopper when it is inserted into the gap. be able to.

[Brief description of drawings]

FIG. 1A is a front view of a conductive metal fitting according to an embodiment,
(B) is the side view.

FIG. 2 is a front view showing a usage state of the conductive fitting according to the embodiment.

3 is a plan view of a part of FIG. 2. FIG.

FIG. 4A is a front view of a conductive metal fitting according to another embodiment,
(B) is the side view.

5A is a front view of a conductive metal fitting according to still another embodiment, and FIG. 5B is a side view thereof.

FIG. 6 is a front view showing a usage state of a conductive fitting according to still another embodiment.

FIG. 7 is a plan view of a part of FIG.

8A is a front view of a conductive metal fitting according to still another embodiment, and FIG. 8B is a side view thereof.

[Explanation of symbols]

 1a to 1d Conductive metal fittings for power transmission and distribution (conductive metal fittings) 2a to 2d Base portion 2d 'Tongue pieces 3a to 3d, 4a to 4d Long piece eye portion (I portion) Loclevis portion Lo' Base P pin A Insulator B Clamp metal fitting D Gap E Cap bracket

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayoshi Mori 6, 28 Hagiyamadai, Seto City, Aichi Prefecture (72) Inventor Mitsuo Hara 34, 1-11 Nishikotakano, Toyohashi City, Aichi Prefecture

Claims (2)

[Claims] 1. A conductive metal fitting for power transmission and distribution, which connects an clevis part of an equipment such as an insulator or a clamp metal fitting to an eye part of another equipment via a pin, wherein the clevis and the eye part are electrically connected to each other. The conductive metal fitting for power transmission and distribution comprises a bifurcated leaf spring inserted into a gap between the base of the clevis portion and the tip of the eye portion. 2. The conductive fitting for power transmission and distribution according to claim 1, wherein a tongue piece projecting in a direction orthogonal to the longitudinal direction of the base is provided on the bifurcated base of the leaf spring.