JPS6328827Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a current-carrying connection part of a disconnector, and particularly relates to an improvement in a flexible conductor that is not easily damaged even when subjected to external forces such as wind pressure.

FIG. 1 shows a horizontal single-point disconnector, which is a type of disconnector, when it is turned on, and a current-carrying connection portion is provided at the upper ends of two operating insulators 10, 10. As shown in FIG. 2, this energizing connection part rotates integrally with the terminal block 4 connected to the track 7 that does not follow the rotation of the operating insulator 10 in a double-door style as the operating insulator 10 rotates. The terminal block 4 and the blades 3 are each supported on the upper part of the operating insulator 10, and the terminal block 4 and the blades 3 are electrically connected by a flexible conductor 2 via terminals 8 and 9. As is well known, the flexible conductor 2 requires a certain degree of flexibility so that it can easily follow the opening and closing of the blade 3, so it is made of a plurality of very thin copper plates 1 stacked in layers. Both ends thereof are electrically connected to the terminal block 4 and the blade 3 via terminals 8 and 9, respectively.

However, in the case where such thin copper plates 1 are simply stacked one on top of the other, there is a slight gap between each of the sheets, and when wind enters this gap, the wind pressure is shared by the thin copper plates 1. It turns out. For example, if the wind enters the nth sheet from the outside, the wind pressure will be supported by the n sheets, and only one of the outermost thin copper plates 1 will receive this wind pressure. There is a problem in that the flexible conductor 2 is gradually separated from its outermost layer by being repeatedly subjected to such external forces such as wind pressure, and eventually becomes unusable. In addition, the flexible conductor 2 generally requires sufficient flexibility and excellent current-carrying characteristics due to its intended use, so a soft thin copper plate as described above is used, and during handling or operation, etc. The outer surface is likely to be scratched, resulting in premature damage to the flexible conductor 2. Furthermore, products rated for small currents have particularly thin walls due to their current capacity, so if they are bent during operation or under wind pressure, the radius of curvature will locally decrease due to their own weight, reducing fatigue due to opening and closing operations. There were many problems, such as the high height and the risk of damage from this part.

The present invention was devised to solve the problems found in conventional current-carrying connections using flexible conductors as described above. In the current-carrying connection part of the disconnector, which is configured by fixing the conductor to the terminal block and fixing the other end to the terminal block, a pair of reinforcing plates made of a material more rigid than the conductor are butted on both sides of the outermost layer of the flexible conductor. This is a current-carrying connection portion of a disconnector in which the flexible conductor and the reinforcing plate are tightly fixed by attaching holding metal fittings to both ends thereof and tightly fixing the flexible conductor and the reinforcing plate.

Hereinafter, preferred embodiments will be described in detail with reference to the drawings.

As shown in FIGS. 3 to 5, the current-carrying connection part of the disconnector of the present invention is made of a flexible conductor 2 made by stacking a plurality of thin copper plates 1 with excellent conductivity in a layered manner similar to the conventional one. A pair of reinforcing plates 5 made of a material at least more rigid than the conductor 2 on both sides of the outermost layer.
are attached in an abutted manner, and the ends of this reinforcing plate 5 are further clamped with presser metal fittings 6. Both ends of the flexible conductor 2 provided with the reinforcing plate 5 are electrically connected via terminals 8 and 9 fixed to the terminal block 4 and the blade 3, respectively.

The flexible conductor 2, the reinforcing plate 5, and the holding metal fitting 6 are tightened with the required number of bolts 12, and as a result of this tightening, the holding metal fitting 6 holds the flexible thin copper plate 1 and the reinforcing plate 5. It is forcibly pressed to improve the adhesion to each terminal 8, 9 and to make the space between each thin copper plate 1 dense.

In addition, reinforcing plates 5 are attached on both sides of the laminated thin copper plates 1 to prevent damage caused by external forces such as wind pressure, and as shown in FIG. It has a tightening hole 5' and has approximately the same external dimensions as the flexible conductor 2, and its material is at least more rigid than the thin conductive plate 1, and moreover, it can easily follow the opening and closing operations of the electric circuit. It is made of, for example, a stainless steel plate or a phosphor bronze plate and is made as thin as possible with as much flexibility as possible.

The presser metal fitting 6 is made by forming a rigid body such as an iron plate into two types of long and short strips, one end of which is bent outward, and the other end has a thin copper plate 1 and a reinforcing plate 5.
Tightening hole 6' to tighten them together with bolt 11
Drill at least one hole. Incidentally, as shown in FIG. 5, for example, mounting holes 6'' for fixing to the terminals 8 and 9 are provided in the longer presser metal fitting 6 at appropriate intervals.

As described above in detail with the embodiments, according to the present invention, reinforcing plates made of a material with higher rigidity than the conductor are attached to both sides of the outermost layer of a flexible conductor made of laminated thin copper plates, and Since the reinforcing plate is pressed with a holding metal fitting to tightly tighten the flexible conductor, the flexible conductor will not separate even when subjected to repeated wind pressure, and it will not be easily damaged during handling. Not only can it withstand long-term use compared to conventional products, it is also easier to handle, and even when the flexible conductor of a product with a low current rating is thin, it can be used with appropriate rigidity due to the highly rigid material placed on the outermost layer. The practical value is extremely great, as the fatigue properties are significantly improved without locally reducing the radius of curvature.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram showing a horizontal single point disconnection device, Figure 2
The figures to FIG. 5 show embodiments of the present invention.
FIG. 2 is a front view of the current-carrying connection part, FIG. 3 is a perspective view of the current-carrying connection part, FIG. 4 is a detailed view of the flexible conductor mounting part, and FIG. 5 is a detailed view of the presser fitting. 1... Thin copper plate, 2... Flexible conductor, 3... Blade, 4... Terminal block, 5... Reinforcement plate, 6... Holding metal fitting, 7... Line, 8... Fixed to blade Terminal, 9... Terminal fixed to the terminal block, 10...
...Operation insulator, 11, 12...bolt.

Claims (1)

[Scope of utility model registration request] In the current-carrying connection part of a disconnector constructed by fixing one end of a flexible conductor 2 made of a plurality of laminated thin copper plates 1 to a blade 3 and the other end to a terminal block 4, the flexible conductor 2 is A pair of reinforcing plates 5 made of a material more rigid than the conductor 2 are attached to both sides of the outermost layer in abutting manner, and holding metal fittings 6 are fastened to both ends of the reinforcing plates 5, and by tightening the holding metal fittings 6. An energizing connection part of a disconnector, characterized in that the flexible conductor 2 and the reinforcing plate 5 are tightly fixed.