JPH09168224A - Insulation tube with integrated voltage detection cap - Google Patents

Abstract

(57) [PROBLEMS] To provide an insulating cylinder integrated with a voltage detecting cap, which does not require a separate part, as a means for preventing the loss of the voltage detecting cap. SOLUTION: A protrusion 7 is formed at an end of an insulating cylinder 1 of a device directly connected terminal, and a loss preventive detection cap 5 having a detection cap portion 5a, a connecting portion 5b and a hole 5c is made of a semiconductive rubber. This is an insulating cylinder integrally formed with a voltage-detecting cap, which is integrally molded and fitted and fixed to the protruding portion 7 of the insulating cylinder 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulating tube for a power cable equipment direct connection connection portion.

[0002]

2. Description of the Related Art A conventional power cable device direct connection portion will be described with reference to the drawings. In FIG. 3 showing an insulating cylinder of a power cable device direct connection portion, an insulating cylinder 1 of a direct connection portion provided at a tip of a power cable connected to a bushing of an electric device (not shown) has a rod-like shape fitted inside the bushing. It has a connector and is covered with an insulator to protect it. Then, for the purpose of periodic inspection, it is configured so that the electric detection stripes in the insulating cylinder 1 are exposed, and for safety, the electric detection cap 2 is usually detachably formed and fitted therein for safety. The insulating cylinder 1 and the power cable 8 are grounded by the ground wire 4. No particular measures have been taken to prevent loss of the voltage detection cap 2.

Further, in the insulating cylinder 1 of the power cable equipment direct connection portion shown in FIG. 4, the detecting cap 2 is connected to the insulating cylinder 1 with a string or a chain 3 to prevent the detecting cap 2 from being lost. ing. In this case, the one connected by the chain 3 is the insulating tube 1 and the ground wire 4 of the power cable 8.
It is grounded together with it, ensuring safety. (For example, Japanese Utility Model Publication No. 56-19580 and Japanese Utility Model Publication No. 56-19.
No. 583)

[0003]

In the structure of the conventional insulating cylinder 1 shown in FIG. 3 described above, the voltage detection cap 2 is used at the time of voltage detection.
There was a possibility of loss due to the removal of the. In addition, in the configuration of the insulating cylinder 1 shown in FIG. 4, a separate component such as a chain is prepared to prevent loss, and the insulating cylinder 1 and the voltage detection cap 2 are provided.
Had to be attached to.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an electric insulation cap integrated type insulating cylinder having a structure which does not require a separate part, as a means for preventing the electric detection cap from being lost. .

[0005]

SUMMARY OF THE INVENTION According to the present invention, a protruding portion is formed on an end portion of an insulating cylinder of a device direct connection terminal,
A loss-preventing electric detection cap having a connecting portion and a hole is integrally formed of semi-conductive rubber, and is fitted and fixed to a protrusion of the insulating tube. .

Therefore, the detection cap portion, the connection portion for preventing loss, and the hole portion for fixing are integrally molded with semiconductive rubber, and a protrusion portion is provided on a part of the insulating cylinder to prevent loss detection. By inserting the electric cap into the protruding part of the insulating cylinder and fixing it,
You can easily prevent loss.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an embodiment of a loss-preventing voltage detection / voltage detection cap used for an insulation cylinder integrated with a voltage detection cap. That is, the loss prevention power detection cap 5 includes a circular power detection cap portion 5a, a connection portion 5b corresponding to a loss prevention string, and a circular hole portion 5c having a hole 6 at the tip of the connection portion 5a. Formed from. These are integrally molded with semiconductive rubber.

In FIG. 2, a projecting portion 7 having a spherical stopper at the tip is formed below the detecting portion 1a of the insulating cylinder 1.
Then, the hole 6 of the hole portion 5c of the loss prevention power detection cap 5 is fitted and fixed here, and the power detection cap portion 5a is fitted to the power detection portion 1a to cover. Therefore, the loss prevention power detection cap 5 does not come off from the projection portion 7, and at the time of power detection, the power detection cap portion 5a is removed from the power detection portion 1a and the power detection cap portion 5a is rotated around the projection portion 7. ,
It can be held in a position where it does not interfere with the voltage detection. Therefore, the power detection cap 5 is not lost.

[0009]

As described above, according to the insulation cap integral type insulating cylinder of the present invention, the detection cap portion is manufactured by integrally molding the connecting portion and the hole portion with the semiconductive rubber. Therefore, the electric detection cap itself is integrally formed with the insulating tube without using other parts for preventing loss. By integrally forming the loss-preventing detection cap with semi-conductive rubber, the detection cap can be reliably grounded by attaching the insulating cylinder to the grounded outer semi-conductive layer, and safety can be ensured.

[Brief description of the drawings]

FIG. 1 is a front view showing the configuration of a loss prevention power detection cap,

FIG. 2 is a side view showing the configuration of an insulating cylinder integrated with a voltage detection cap,

FIG. 3 is a side view showing a conventional insulating cylinder,

FIG. 4 is a side view showing an insulating cylinder having a conventional loss-prevention type electric detection cap.

[Explanation of symbols]

 1 Insulation cylinder 2 Voltage detection cap 3 Chain 4 Ground wire 5 Loss prevention type voltage detection cap 5a Voltage detection cap part 5b Connection part 5c Hole 6 hole 7 Protrusion 8 Power cable

Claims (1)

[Claims] 1. A protrusion is formed at an end of an insulating cylinder of a terminal directly connected to a device, and a loss-preventing detection cap having a detection cap portion, a connecting portion, and a hole is integrally molded with a semiconductive rubber. Is fitted to and fixed to the protrusion of the insulating cylinder.