JP2602784B2 - Wire end treatment cap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire terminal treatment cap which is fitted to a live wire terminal for insulation purpose when a low piezoelectric wire is installed between utility poles.

[0002]

2. Description of the Related Art Conventionally, an insulating tape has been wound around a hot wire terminal for insulation treatment. However, this operation is troublesome, and the adhesive force is reduced due to aging during use. The tape may be easily peeled off, and the effectiveness of the insulation may be reduced. Therefore, in order to improve this, a cap is attached to the end of the electric wire. As this kind of electric wire terminal treatment cap, for example, the one described in Japanese Utility Model Publication No. 2-46204 related to the invention of the applicant is known. By the way, as shown in FIG. 5, this invention is a cap body 101 having a bottomed cylindrical body having an opening 102 at one end.
Is formed in a tapered shape having a gradually increasing diameter from the bottom wall 104 toward the opening 102.
A plurality of ribs 105 are protruded at equal intervals in the longitudinal direction of the wire, and the active terminal of the electric wire inserted from the opening 102 is pushed in so that the outer peripheral surface is cut into each rib 105 to be pinched.

[0003]

In the conventional electric wire end treatment cap constructed as described above, the inner wall 103 is formed in a tapered shape so that the electric wire can be easily inserted.
Because of the structure in which the ribs 105 protrude from the wire 03, there is a possibility that the wires will come off unless they are strongly pushed in and firmly clamped. Therefore, it was difficult to remove the wire once pinched so as not to come off. In view of such a conventional technique, the present invention can easily and securely insert the wire into the end of the wire to pinch the wire, and can easily remove the cap from the once held wire with a tool such as a hot stick. It is an object of the present invention to provide a wire end treatment cap that can be used.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, according to the present invention, there is provided an electric wire end treating cap, wherein an inner diameter of the cap is formed on an opening side of a cover body having a bottomed cylindrical body opened at one end in a longitudinal direction. An electric wire in which a spring accommodating portion larger than the inner diameter of the main body is continuously provided, the spring accommodating portion is formed in a half-split cylindrical shape so that the diameter can be expanded, and a tapered portion is provided on the end face on the opening side. A spring expansion ring having a tapered portion surrounding the tapered portion of the holding spring and the wire holding spring is attached, and the expansion ring has a tapered protruding piece that engages with a divided gap of the wire holding spring. And a tab is provided so as to be opposed to the outer peripheral surface of the spring accommodating portion and the lower end of the outer peripheral surface of the spring expanding ring.

[0005]

When the cover main body is inserted into the live wire end of the electric wire, the live wire end of the electric wire comes into contact with the inner peripheral wall of the spring expanding ring located on the opening side of the cover main body and presses the spring expanding ring. The tapered portion at the tip of the spring expanding ring presses the tapered portion of the wire holding spring that is in contact with the wire to expand the wire holding spring, so that the live wire end of the wire enters the cover body. During this approach, the projecting piece of the spring expanding ring cuts into the gap between the wire holding springs to constantly open the wire holding spring, so that the live wire end of the wire enters the cover body smoothly. When the cover body is fitted to the live wire end of the electric wire, the projecting piece of the spring expanding ring is pushed out from the gap of the electric wire holding spring to tighten the electric wire, and the spring expanding ring is moved by the electric wire holding spring. Returning to the original position further away, the wire holding spring contracts accordingly, and the cover body is firmly held by the wire.

[0006] The electric wire held in such a manner, when the knob of the spring expanding ring and the knob provided at the lower end of the spring accommodating portion are gripped by a tool such as a hot stick, the projecting piece of the spring expanding ring. However, the hot stick is inserted into the gap between the wire holding springs to expand the wire holding spring, and the live wire end of the wire is released from the holding of the wire holding spring. If it is moved in the direction, the cover body can be pulled out from the live wire end of the electric wire.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1 to FIG. 4, reference numeral 1 denotes a cover main body formed of a bottomed cylindrical body. The cover main body 1 has a tool gripping portion 2 opposed to the outer peripheral surface of the cover main body 1 and gripped by a tool such as a hot stick. A spring accommodating portion 5 having an inner diameter enlarged by providing a stepped portion 4 on the inner side surface is continuously provided. Reference numeral 6 denotes an electric wire holding spring to be mounted on the spring accommodating portion 5. The electric wire holding spring 6 is formed by inserting a metal spring having a half-split cylindrical shape into a resin as shown in FIG. The inner diameter is set to be slightly smaller than the outer diameter of the electric wire W in a normal state. An end surface of the wire holding spring 6 facing the opening 3 is formed with a tapered portion 7 which is inclined inward.

Numeral 8 denotes a spring expanding ring having substantially the same diameter as the electric wire W for expanding the inner diameter of the electric wire holding spring 6. The tapered portion 7 is formed on the end face of the spring expanding ring 8 facing the electric wire holding spring 6. A tapered portion 9 that is inclined outward and is in contact with is formed around the periphery. Further, the spring expanding ring 8 has a tapered portion 9.
A tapered protruding piece 10 protruding from the lower end is provided, and this protruding piece 10 is engaged with the divided gap 11 of the wire clamping spring 6. Further, a knob 12 is protruded from the outer peripheral surface of the spring expanding ring 8 so that the knob 12 protrudes from an opening 12 ′ below the cover body 1. Further, a knob 13 is also provided on the outer peripheral surface of the spring accommodating portion 5 so as to face the knob 12.

The electric wire end processing cap A thus configured has the opening 3 with the tool holding portion 2 formed facing the outer peripheral surface of the cover body 1 sandwiched by the hot stick T.
When inserted into the live wire end of the electric wire W as shown in FIG.
Since the live wire end of the electric wire W contacts the inner peripheral wall of the spring expansion ring 8 and presses the entire spring expansion ring 8 inward, the spring expansion ring 8 moves inward. At this time, the tapered portion 7 of the wire clamping spring 6 with which the tapered portion 9 of the spring expanding ring 8 is in contact.
Is pressed, and the projecting piece 10 of the spring expanding ring 8 bites into the divided gap 11 of the electric wire holding spring 6 to expand the electric wire holding spring 6 formed in a half-cylindrical shape. It is possible to smoothly enter the inside of the cover body 1.

When the insertion operation is completed, the expanded wire holding spring 6 is restored and the electric wire W inserted into the cover body 1 is restored to tighten the electric wire W. 10 is pushed out of the gap 11 between the wire holding springs 6 and returns to its original position. With this, the wire holding spring 6 further contracts and firmly holds the wire W,
The hot wire end of the electric wire W held on the cover body 1 is held without being pulled out.

When the live end of the electric wire W held in the cover body 1 in this manner is removed from the electric wire end processing cap A as needed, the knob 12 of the spring expanding ring 8 and the spring accommodating portion are removed. When the knob 13 is pinched with a hot stick T as shown by a chain line in FIG. 4 and a force is applied in the direction of the arrow, the tapered portion 9 of the spring expanding ring 8 presses the tapered portion 7 of the wire holding spring 6. Further, since the projecting piece 10 of the spring expanding ring 8 bites into the divided gap 11 of the wire holding spring 6, the wire holding spring 6 is expanded, and the wire W held by the wire holding spring 6 is opened. When the hot stick is moved in the terminal direction of the electric wire W with the knob 12 of the spring expanding ring 8 and the knob 13 of the spring accommodating portion 5 held as they are, the cover main body 1 is moved to the live end of the electric wire W. Remove more easily Door can be.

[0012]

As described above, the wire end treatment cap according to the present invention can be easily attached to the live wire end of the wire by one-touch operation, and the cap body does not come off while holding the wire. It is securely held. And
The wire held in this manner can be easily removed as needed by a one-touch operation without any damage to the wire end treatment cap, so that the wire end treatment cap can be reused. It should be noted that the attachment and detachment of the wire end treatment cap to and from the wire are performed with a hot stick, which is extremely safe.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an electric wire terminal processing cap.

FIG. 2 is a sectional view of FIG.

FIG. 3 is a perspective view of an electric wire holding spring and a spring expanding ring used in FIG. 1;

FIG. 4 is a sectional view of the use state of FIG. 1;

FIG. 5 is a sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cover main body 3 Opening 5 Spring accommodating part 6 Electric wire holding spring 7, 9 Taper part 8 Spring expanding ring 10 Projection piece 11 Gap 12, 13 Knob piece

Claims (1)

(57) [Claims] 1. A spring housing part having an inner diameter larger than the inner diameter of the cover main body is connected to an opening side of a cover main body composed of a bottomed cylindrical body opened at one end in a longitudinal direction, and a half of the spring housing part is provided. A spring expansion in which a split cylindrical shape is formed so that the diameter can be expanded, and a wire clamping spring having a tapered portion formed on the end face on the opening side and a tapered portion in contact with the tapered portion of the wire clamping spring are formed. Attach the ring, the expansion ring,
A tapered protruding piece that engages with the divided gap of the wire clamping spring is protruded, and a knob is protruded from the outer peripheral surface of the spring accommodating portion and the lower end of the outer peripheral surface of the spring expanding ring so as to face each other. An electric wire end treatment cap, characterized in that: