JPH059907B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) For example, a crimp terminal attached to the tip of an electric wire is connected to a terminal of a breaker in a power distribution board using a tightening bolt. The present invention provides a crimp terminal that allows loosening the tightening bolt in order to remove the crimp terminal from the terminal of a breaker, etc., without touching the bolt and without separating the tightening bolt from the crimp terminal. This invention relates to a holding fitting for a connecting bolt and a method for working with live wires using the holding fitting.

(Prior art) Conventionally, for example, when removing a wire connected to a terminal of a breaker in a power distribution board for maintenance and inspection, etc., when removing the tightening bolt of the crimp terminal, the tightening bolt is attached to the crimp terminal. The problem is that it can easily fall off and be lost. In order to prevent the tightening bolt from being lost, the removal work must be carried out while holding it directly by hand. Therefore, this work cannot be carried out with a live wire imager, and during the work, the power supply is disconnected and the electricity is turned off to prevent electric shock accidents. However, it is troublesome to disconnect the power supply each time during work and then turn it on again after completing the work.

(Problem to be Solved by the Invention) Therefore, the present invention prevents the tightening bolt from being lost when removing the crimp terminal from a conductive part such as a breaker, and also prevents the tightening bolt from being lost when working with a live wire. It is an object of the present invention to provide a holding fitting for a crimp connection bolt that allows an electric wire to be removed from a terminal without directly touching the conductive part with hands, and a method for working with live wires using the holding fitting.

(Means for Solving the Problems) In order to solve the above problems, in the present invention,
A bolt holding part 2 that covers at least a part of the upper part of the bolt 12 with a tool engagement hole such as a hexagonal hole 12a inserted into the bolt insertion hole 11a of the crimp terminal 11 in advance and prevents it from coming off from the bolt insertion hole 11a. The bolt holding part 2 is provided with a binding part 3 which is continuous with the bolt holding part 2 and ties together the tip part 10a of the electric wire 10 protruding from the crimp part 11b of the crimp terminal 11 and the crimp terminal 11 from the outer periphery. ,
A notch such as a circular hole 2a formed to allow access of a tool to the bolt 12 is provided, and the binding portion 3 has a curved portion 3a along approximately the upper half of the tip portion 10a of the electric wire 10, and A pair of bending tongues 3b extending downward from both sides of the curved portion 3a and capable of bending to the lower part of the crimp terminal 11 to hold it are provided to constitute the holding fitting 1 for the crimp terminal connecting bolt.

In addition, in order to detach the crimp terminal 11 connected to the live conductive part 13 from the conductive part 13 with the holding fitting 1 of the crimp terminal connecting bolt attached, and perform the necessary work, the tightening bolt 12 is removed.
into the tool engagement hole 12a of the notch 2 of the holding fitting 1.
a, and after loosening the tightening bolt 12 with the tool and removing it from the conductive part 13 together with the crimp terminal 11,
A method was adopted in which the crimp terminal 11 was held and pulled away from the conductive part 13, and then an insulating tube 14 made of flexible synthetic resin was covered over the crimp terminal 11 without touching it directly, thereby electrically insulating and holding the crimp terminal 11.

(Function) Holding fitting 1 for crimp terminal connection bolt 12 of the present invention
is a pair of bent tongues that are attached to the crimp terminal 11 so as to cover the upper part of the bolt 12 with the tool engagement hole 12a that has been inserted into the bolt insertion hole 11a of the crimp terminal 11 in advance, and that extends downward from the crimp terminal 11. Piece 3b
is attached by bending it along the lower part of the crimp terminal 11 and holding it. bolt 12
Since the tool engagement hole 12a is exposed through the notch 2a of the bolt holding part 2, the bolt 12 is tightened by approaching the tool through the notch 2a. The crimp terminal 11 is integrated with the holding fitting 1, and the bolt 12 rotates easily under the bolt holding part 2. With the holding fitting 1 attached, crimp terminal 11
When detaching the terminal from the conductive part 13, engage the tool into the tool engagement hole 12a of the clamping bolt 12 through the notch 2a of the holding fitting 1, loosen the clamping bolt 2 with this tool, and connect the crimp terminal 11 with the tool. It is removed from the conductive part 13 as a whole. Tightening bolt 12
Even after it is removed from the conductive part 13, it is prevented from coming off by the bolt holding part 2 and is integrated with the crimp terminal 11, so there is no risk of losing it.

If you want to remove the crimp terminal 11 from the conductive part and perform the necessary work while the wire is live, loosen the tightening bolt 12 with a tool without touching it.
After removing the crimp terminal 11 from the conductive part 13,
Holding the insulating coating portion 10b of the electric wire 10, conductive portion 13
and then without touching it directly.
A flexible insulating tube 14 made of synthetic resin is placed over the crimp terminal 11 to electrically insulate the crimp terminal 11.

(Embodiment) An embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a front view of the holding fitting, FIG. 2 is a side view of the holding fitting, FIG. 3 is a perspective view of the holding fitting, and FIG. 4 is a perspective view showing the insulation work of the crimp terminal.

In FIGS. 1 and 2, the holding fitting 1 is attached to a crimp terminal 11 at the tip of an insulated wire 10. As shown in FIGS. This holding fitting 1 is constructed by press-molding a single thin metal plate, and includes a bolt holding part 2 and a binding part 3.

The bolt holding part 2 is for preventing the tightening bolt 12 with a tool engagement hole such as a hexagonal hole 12a from coming out of the bolt insertion hole 11a of the crimp terminal 11, and is inserted into the bolt insertion hole 11a in advance. It is placed over the top of the bolt 12. The bolt 12 can freely rotate under the bolt holding part 2. A notch like a circular hole 2a is formed in the bolt holding part 2 to allow a tool to approach the hexagonal hole 12a of the bolt 12. The diameter of this circular hole 2a is smaller than the diameter of the head of the bolt 12, so the bolt 12 cannot come out from here.

The binding part 3 connects the tip 10a of the electric wire 10 protruding from the crimp part 11b of the crimp terminal 11 and the crimp terminal 11.
and are tied together from the outer periphery. That is, the binding part 3 is
The electric wire 10 has a curved portion 3a extending substantially along the upper half of the tip portion 10a, and a pair of opposing bent tongues 3b extending downward from both sides of the curved portion 3a. The bending tongue piece 3b can be bent substantially at right angles along the lower surface of the crimp terminal 11 to hold the crimp terminal 11 therein.

The tongue piece 5 protrudes downward from the bolt holding part 2 at a right angle, and abuts against or runs along the side surface of the head of the bolt 12.

Holding fitting 1 for crimp terminal connection bolt of this example
are a pair of bent tongue pieces 3b that are attached to the crimp terminal 11 so as to cover the upper part of the hexagonal socket bolt 12 that has been inserted into the bolt insertion hole 11a of the crimp terminal 11 in advance, and extend downward from the crimp terminal 11; 3b is bent along the lower part of the crimp terminal 11 to hold the crimp terminal 11. Hexagonal hole 12 of bolt 12
Since the bolt 12 is exposed through the circular hole 2a of the bolt holding part 2, a tool is approached through the circular hole 2a to tighten the bolt 12. Crimp terminal 1
1 is integrated with the holding fitting 1, and the bolt 12 rotates easily under the bolt holding part 2.

When removing the crimp terminal 11 from the conductive part 13 with the holding fitting 1 attached, a tool is engaged through the notch 2a of the holding fitting 1 into the tool engagement hole 12a of the tightening bolt 12, and then Loosen the tightening bolt 12 with a tool. When the bolt 12 is loosened, the bolt 12 and the crimp terminal 11 are lifted up from the conductive part 13 together. Tightening bolt 1
2 is prevented from falling off from the crimp terminal 11 by the bolt holding part 2 even after being removed from the conductive part 13, and is always integrated with the crimp terminal 11, so there is no risk of it falling off and being lost.

When removing the crimp terminal 11 while the wire is live and performing necessary maintenance and inspection work, tighten the tightening bolt 12.
Tighten it with a tool in the same way as before, without touching it. Then, after removing the tightening bolt 12 from the conductive part 13 together with the crimp terminal 11, the electric wire 1
Hold the insulating coating part 10b of 0 and pull it away from the conductive part 13, then cover the crimp terminal 11 with an insulating tube 14 made of flexible and transparent synthetic resin, and then remove the crimp terminal 11.
electrically insulated.

Note that the present invention is not limited to the illustrated embodiment, and for example, the bolt holding portion 2 may be configured such that the tightening bolt 12 is inserted into the bolt insertion hole 11a of the crimp terminal 11.
It doesn't matter what shape it is, as long as it can prevent it from escaping. Further, the holding fitting 1 of the present invention can be applied to crimp terminals 11 connected to all types of terminals.

(Effect of the invention) As described above, in the present invention, the crimp terminal 1
a bolt holding part 2 that covers at least a part of the upper part of the bolt 12 with a tool engagement hole such as a hexagonal hole 12a inserted into the bolt insertion hole 11a of No. 1 in advance and prevents it from coming out of the bolt insertion hole 11a; A tip portion 10a of the electric wire 10 that is continuous with the bolt holding portion 2 and protrudes from the crimp portion 11b of the crimp terminal 11.
and a binding part 3 for binding the crimp terminals 11 from the outer periphery, and the bolt holding part 2 has a bolt 12
A circular hole 2a formed to allow a tool to approach the
A notch is provided in the binding part 3, and the wire 10 is inserted into the binding part 3.
A curved portion 3a along approximately the upper half of the tip portion 10a of
and a pair of bending tongues 3b that extend downward from both sides of this curved portion and can be bent to the lower part of the crimp terminal 11 to hold it, thereby forming the holding fitting 1 for the crimp terminal connecting bolt. . and,
With the holding fitting 1 of the crimp connection bolt attached, in order to remove the crimp terminal 11 connected to the live conductive part 13 from the conductive part 13 and perform the required work, the tool of the tightening bolt 12 is removed. A tool is engaged through the notch 2a of the holding fitting 1 into the matching hole 12a, and after loosening the tightening bolt 12 with the tool and removing it from the conductive part 13 together with the crimp terminal 11, the insulation coating part 10b of the electric wire 10 is removed. This method employs a method of holding the crimp terminal 11 and holding it away from the conductive part 13, and then covering the crimp terminal 11 with a flexible synthetic resin insulating tube 14 without touching it directly, thereby electrically insulating and holding the crimp terminal 11. Crimp terminal 11
There is no risk of losing the tightening bolt 12 during removal work. Further, when removing the tightening bolt 12, there is no need to directly touch the tightening bolt 12, and even after removal, the crimp terminal 11 can be insulated with the insulating tube 14 without touching it, so the power supply can be turned on each time. It is possible to safely and quickly perform work in a live wire state without the trouble of disconnecting the wire and reinserting it after the work is completed.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a front view of the holding fitting, FIG. 2 is a side view of the holding fitting, FIG. 3 is a perspective view of the holding fitting, and FIG. 4 is a view of the crimp terminal. It is a perspective view showing insulation work. 1... Holding metal fitting, 2... Bolt holding part, 2a
...Circular hole (notch), 3... Binding part, 3a...
Curved portion, 3b... bending tongue piece, 10... electric wire,
10a...Tip portion, 10b...Insulating coating portion, 11
...Crimp terminal, 11a... Bolt insertion hole, 12...
... Tightening bolt, 12a... Hexagonal hole (tool engagement hole), 13... Conductive part, 14... Insulating tube.

Claims (1)

[Scope of Claims] 1. A crimp terminal fixed to the tip of an insulated wire, and a holding metal fitting attached to the crimp terminal for binding with a tightening bolt for connecting the crimp terminal to the end of a conductor. a bolt holding part that covers at least a part of the upper part of the bolt with a tool engagement hole that has been inserted in advance into the bolt insertion hole of the crimp terminal and prevents it from coming out of the bolt insertion hole; , comprising a binding part that binds the tip of the electric wire protruding from the crimp part of the crimp terminal and the crimp terminal from the outer periphery, and the bolt holding part is formed to allow a tool to approach the bolt. The binding part has a curved part along approximately the upper half of the tip of the electric wire, and extends downward from both sides of this curved part, and is bent to the lower part of the crimp terminal to form a crimp terminal. A holding fitting for a crimp terminal connection bolt, characterized in that it has a pair of bent tongue pieces that can hold the crimp terminal connection bolt. 2. A method for performing a required operation by detaching a crimp terminal connected to a live conductive part from the conductive part with the holding fitting of the crimp terminal connection bolt according to claim 1 attached, Engage the tool into the tool engagement hole of the tightening bolt through the notch of the holding metal fitting, loosen the tightening bolt and remove it together with the crimp terminal from the conductive part, and then hold the insulation coating of the wire. live wire work, characterized by separating the crimp terminal from the conductive part using the hand, and then covering the crimp terminal with a flexible synthetic resin insulating tube to electrically insulate the crimp terminal and proceeding with the necessary work without touching the crimp terminal directly. Method.