JPH0126024Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a disconnector, and in particular improves the structure of the attachment part between the terminal block and the current-carrying shaft.

Figure 1 shows a horizontal single-point disconnector, which is a type of disconnector, in which two rotary insulators 1 are vertically attached to both ends of a base 3 fixed to a pedestal 2 set on the ground. , can be rotated by a rotation operation of an operating device (not shown). A hinge part 4 fixed to the upper end of the rotary insulator 1 is connected to a track 5 that does not follow the rotation of the rotary insulator 1.
It has a terminal block 6 to which is connected, and one end of a blade 7 is fixed. In addition, the blade 7
The contact 8 rotates integrally with the rotation of the rotary insulator 1 (double door type), and is fixed to the other end of the rotary insulator 1.
The track can be opened and closed by bringing them into contact with each other and separating them.

2 and 3 show an example of a hinge part of this type of disconnector, in which two blades 7 are formed in a U-shape and open upward at the upper end of the rotary insulator 1. The base end portion of the rotary insulator 1 is fixed to the inside of the supporting member 9 which is fixed as shown in FIG.
It rotates integrally with the rotation of the line, allowing the track to be opened and closed. A current-carrying shaft 10 formed of a cylindrical conductor is mounted on a bearing 11 fixed on the upper surface of the support member 9 and on the axis of the rotary insulator 1.
It is rotatably mounted by. A flange 12 is fixed to the upper end of this current-carrying shaft 10,
A terminal block 6 is connected to this flange 12 by being tightened with bolts 13.

Note that 14 is a U-shaped flexible conductor, one end of which is fixed to the blade 7, and the other end fixed to the current-carrying shaft 10.

In the hinge portion of the disconnector configured as described above, the connection between the current-carrying shaft 10 and the terminal block 6 is achieved by fixing a flange 12 to the upper end of the current-carrying shaft 10 and tightening this flange 12 and the terminal block 6 with bolts 13. There is. Therefore, it is not only necessary to fix the flange 12 to the current-carrying shaft 10, but also to fix the flange 12 to the current-carrying shaft 10 and the terminal block 6.
In order to electrically and mechanically connect the two, a large number of bolts 13 must be tightened, and the tightening torque must be made uniform, resulting in a very complicated work.

Therefore, in view of the above-mentioned drawbacks of the conventional technology, the present invention does not require any bolts, etc., and has a simple structure.
The purpose of the present invention is to provide a connection part for a terminal block with a current-carrying shaft that can be connected in a short time.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Note that parts that are the same as those in the above-mentioned prior art are given the same numbers, and redundant explanations will be omitted.

In FIGS. 4 and 5, the terminal block 6a is formed with a circular hole 15 having a diameter substantially equal to the outer diameter of the current-carrying shaft 10a, and is formed at a right angle to the current-carrying shaft 10a on the outer periphery of the upper part of the current-carrying shaft 10a. It has been inserted.
Further, on the outer circumference of the current-carrying shaft 10a, the current-carrying shaft 1
Extrusion portions 16, 1 protrude in the diametrical direction of the current-carrying shaft 10a by pressing 0a in the axial direction.
7 are formed on the upper and lower surfaces of the terminal block 6a, respectively, and the terminal block 6a is fixed under narrow pressure by these extruded parts 16 and 17.

6 and 7 show an example of a method for clamping and fixing the terminal block 6a by the extruded parts 16 and 17 of the current-carrying shaft 10a. In FIG. It is attached to the outer periphery of the lower end of 10a. Further, an upper mold 19 is attached to the outer periphery of the upper end of the current-carrying shaft 10a, and the upper end surface of the lower mold 18 and the lower end surface of the upper mold 19 are arranged to have an appropriate distance. There is.
If the upper mold 19 is pressurized in this state, the current-conducting shaft 10a is connected to the portion where the outer periphery is not covered by the upper mold 19 and the lower mold 18, that is, the lower end surface of the upper mold 19 and the lower mold 18. It is buckled outward at a distance from the upper end surface of , and an extruded portion 17 is formed.
After this, as shown in FIG.
0a perpendicular to the current-carrying shaft 10a, and press-pressing the second upper mold 20, the second part of the current-carrying shaft 10a
The current-carrying shaft 10a buckles outward at the portion where the outer periphery is not covered by the upper mold 20 and the lower mold 18, and the extruded portion 16 is formed on the upper surface of the terminal block 6a, and this terminal block 6a is connected to the extruded portion. 16 and 17. As a result, the terminal block 6a is connected to the current-carrying shaft 10.
The extruded portions 16 and 17 of a provide good electrical and mechanical clamping and fixation.

In addition, in the above embodiment, the extrusion section 16,
17 was formed by pressing twice, and the terminal block 6a was placed in the center of the part where the outer periphery was not covered by the upper mold and the lower mold, and press pressing was performed in this state. Then, the extruded portions 16 and 17 can be formed on the upper and lower surfaces of the terminal block 6a by one press application.

Further, as shown in FIG. 8, a tooth-shaped circular hole 15a is formed in the terminal block 6b, and the current-carrying shaft 1 is inserted into this circular hole 15a.
0a and extrusion part 1 in exactly the same manner as in the above embodiment.
6 and 17 to connect the terminal block 6b and the current-carrying shaft 10a, the mechanical strength of the connection between the terminal block 6b and the current-carrying shaft 10a can be further increased.

As described above in detail with the embodiments, according to the present invention, no bolts or the like are used to connect the terminal block and the current-carrying shaft, so there is no need for the complicated work of tightening many bolts with the same torque. Workability is improved. Furthermore, since the entire connection between the terminal block and the current-carrying shaft comes into pressure contact with each other due to pressurization, there is no localized contact unlike with connections using bolts, etc., so a good electrical connection can be achieved. It will be done.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing an outline of a horizontal single-point disconnection device, Fig. 2 is a front view showing the configuration of a conventional hinge part, Fig. 3 is a view taken along line A-A in Fig. 2, and Fig. 4 is FIG. 5 is a plan view of FIG. 4, and FIGS. 6 and 7 show the process of connecting the terminal block and the current-carrying shaft according to an embodiment of the present invention. FIG. 8 is a plan view of a terminal block showing another embodiment of the present invention. 1...Rotary insulator, 6a, 6b...Terminal block, 10
a... Current-carrying shaft, 15, 15a... Circular hole, 16, 1
7...Extrusion section.

Claims (1)

[Scope of utility model registration request] In a disconnector in which a cylindrical current-carrying shaft is rotatably attached to the upper end of a rotary insulator, and a flat plate-shaped terminal block is fixed to the top of the current-carrying shaft at right angles to the current-carrying shaft, the terminal block has a cylindrical current-carrying shaft. A circular hole having a diameter approximately equal to the outer diameter of the shaft is formed, and the current-carrying shaft is fitted into the circular hole, and an extrusion portion protruding in the diametrical direction of the current-carrying shaft is provided on the outer circumference of the current-carrying shaft. A terminal block attachment part of a disconnector, characterized in that the terminal block is formed on the upper surface and the lower surface of the terminal block by pressing the shaft in the axial direction, and the terminal block is fixed under narrow pressure by the extrusion part. .