JPH08163730A - Polishing tool for electric wire tip part - Google Patents

Abstract

PURPOSE: To provide a tool which can surely remove the oxide coat layer of a conductor surface without returning the stranding-up of the conductor of a covered wire and at the same time is used for indirect hot line operation which is easy in operation. CONSTITUTION: This polishing tool has a housing 9 provided with a polishing mechanism constituted by combining a bush receiving member 5 in which a channel inside wound brush 6 is provided in the circumference with an electric wire top 7 having an electric wire insertion port 8 in accordance with the diameter of an electric wire. The housing 9 is rotated on an axial line passing through the center of the electric wire insertion port 8 by the operating shaft 2 through a transfer mechanism and the transfer mechanism is provided with unidirectional clutch 4 for rotating the channel inside wound brush 6 in the direction of stranding a conductor (b) inserted into the electric wire insertion port 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention polishes the entire surface of an oxide film layer generated on the conductor surface of a covered electric wire and a bare electric wire,
It relates to a tool for removing.

[0002]

2. Description of the Related Art In the above-mentioned peeling work of a covered electric wire, a covering layer is cut and removed by an appropriate knife or a cutting tool. In addition, in recent years, it has been demanded to perform live wire work for various electric works, and even for the work of polishing the conductor surface of a covered wire, a live wire that can be remotely operated by attaching it to an insulating operation rod and the arm tip of a manipulator vehicle. Development of a wire polishing tool for work is desired.

As a conventional polishing tool, it is necessary to open and close the wire gripping tool for gripping the electric wire with one hand and reciprocate the wire polishing tool with the other hand. This is a mechanism for gripping the wire and the wire polishing. Each of the mechanisms is independent, and the wire polisher has a drawback that the oxide film layer on the surface of the conductor remains due to reciprocating operation, which obstructs the electrical connection of the conductor, and that the operator operates the insulated operating rod and the manipulator vehicle at the hand side. It cannot be used for indirect live-line work, and improvement was desired.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to reliably remove the oxide film layer on the surface of a conductor without untwisting the conductors of the covered electric wire and to make the operation simple. It is to provide a polishing tool for use in live-line work.

[0005]

That is, the tool for polishing the tip of an electric wire according to the present invention removes the oxide film layer generated on the conductor surface of the covered electric wire after peeling the covering layer and the conductor surface of the bare electric wire. And a housing having a polishing mechanism in which an electric wire piece having an electric wire insertion opening corresponding to an electric wire diameter is combined with a brush receiver in which an in-channel winding brush is circumferentially provided. A transmission mechanism for rotating the housing on an axis passing through the center of the electric wire insertion opening by driving the operation shaft, wherein the transmission mechanism rotates the in-channel winding brush in the twist direction of the conductor inserted in the electric wire insertion opening. It is characterized by having a one-way clutch, in which a conductor such as a coated wire is inserted from the wire insertion port of the wire frame and the operating shaft is driven to wind the coil in the channel together with the housing. The brush is rotated to polish the entire circumference of the conductor surface, and the one-way clutch provided in the transmission mechanism between the housing and the operating shaft causes the winding brush in the channel to rotate only in the conductor twisting direction to restore the conductor twisting. It is designed to be able to be polished without any effort.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show the entire structure of the polishing tool. An operation shaft 2 is rotatably provided at the lower end of the tool body 1, and a bevel gear 3 is attached to the tip of the operation shaft 2 via a one-way clutch 4. The housing 9 is arranged in the horizontal direction, is provided with a gear that meshes with the bevel gear 3, and is rotated in association with the driving of the operation shaft 2. The housing 9 includes a brush receiver 5 to which an in-channel winding brush 6 is press-fitted and fixed,
The polishing mechanism is configured by combining with the wire piece 7 having the wire insertion port 8. Reference numeral 10 denotes a lid body that is attached to the tool body 1 so that the housing 9 that houses the polishing mechanism can be rotated.

As a polishing mechanism, as shown in FIGS. 3 and 4, a brush receiver 5 is attached to an electric wire piece 7 by a screw, and an inside-channel winding brush 6 is installed inside the brush receiver 5.
Is press-fitted and fixed. As shown in FIG. 6, the in-channel winding brush 6 is constituted by a spiral body, and a thin brush 6a made of stainless steel is fixed toward the center.
The opening diameter of the central portion of the in-channel winding brush 6 is set to be slightly smaller than the outer diameter of the conductor b of the corresponding covered electric wire W, so that rotation from the operation shaft 2 causes the electric wire piece 7 and the in-channel winding brush 6 to rotate. To the conductor b of the covered electric wire W, and the electric wire insertion port 8 of the electric wire piece 7 is pressed against the end of the conductor b of the covered electric wire W, and the conductor b is rubbed by the friction at the tip of the brush 6a
The oxide film layer c is removed.

The shape of the conductor b of the covered electric wire W is shown in FIG.
In general, a plurality of thin wires are bundled and twisted in a certain direction, and by rotating the wire piece 7 and the winding brush 6 in the channel in the twisting direction of the conductor b, an oxide film of the conductor b is formed. The layer c can be polished and removed, but when the conductor b is counter-rotated in the twisting direction, the twisting is dissipated and the electrical connection becomes unusable. Therefore, the operating shaft 2 and the bevel gear 3
There is a one-way clutch 4 between the
A rotating mechanism for preventing the twisting of the conductor b is incorporated.

Next, the use of the polishing tool described above will be described with reference to FIGS. As for the covered electric wire W, as shown in FIG. 5, the covering layer a having a constant width is appropriately peeled and removed by a peeling tool beforehand. However, the oxide film layer c remains attached to the conductor b of the covered electric wire W. Then, a polishing tool is attached to the insulating operation rod or the like, the tool is brought close to the covered electric wire W, and the conductor b of the covered electric wire W is pushed into the electric wire insertion port 8 of the electric wire piece 7 of the tool body 1 shown in FIG. By rotating the insulated operating rod etc. to the right, the operating shaft 2 rotates,
In conjunction with this, the electric wire piece 7 and the channel winding brush 6
Will rotate.

The conductor b of the covered electric wire W is sequentially inserted from the electric wire insertion port 8 into the in-channel winding brush 6, and the oxide film layer c of the conductor b is polished and removed by the rotation of the brush 6a.
When polishing to the stripped end of the covered electric wire W is completed, the electric wire piece 7 does not move to the covered electric wire W side but rotates at a fixed position, and thereafter, the tool main body 1 is rotated while rotating the insulating operation rod. Is gradually pulled out from the covered electric wire W, and the tool body 1 is removed.

In the polishing tool described above, the electric wire piece 1 is configured to be detachable, and the change of the electric wire diameter can be easily dealt with by replacing the electric wire piece 7. Further, since the tool body 1 is provided with the hole 11 so that the conductor b of the covered electric wire W inserted into the electric wire insertion port 8 of the electric wire piece 7 penetrates to the opposite side, the polishing length can be arbitrarily set. is there.

[0012]

According to the polishing tool of the present invention configured as described above, even the hard oxide film layer c generated on the surface of the conductor b is uniformly polished and removed over the entire circumference of the conductor b, and each one is The operation can be continuously performed by the operation of the insulating operation rod or the like, and there is no trouble of operating the wire gripping tool for gripping the wire and the polishing tool by separate operation mechanisms unlike the conventional polishing tool. Therefore, if a polishing tool is attached to an insulating operation rod or an arm of a manipulator vehicle, all the steps of polishing work can be performed simply by rotating it at hand, which is extremely excellent as a tool for indirect live-line work.

In addition, the winding brush 6 in the channel is attached to the wire piece 7.
It is possible to evenly polish the whole conductor b after the covering layer a is peeled off of the covered electric wire W and the entire circumference of the conductor b by the brush 6a by the polishing mechanism provided with the one-way clutch 4. It is possible to provide a polishing tool for the tip of an electric wire that is extremely practical, such that the polishing work can be reliably performed without untwisting the conductor b, the operation is simple, and the polishing work can be reliably performed. .

[Brief description of drawings]

FIG. 1 is a partially sectional front view showing an embodiment of a polishing tool according to the present invention.

FIG. 2 is a left side view of the polishing tool shown in FIG.

FIG. 3 is a partially sectional front view of an electric wire piece.

FIG. 4 is a left side view of the electric wire frame.

FIG. 5 is a perspective view showing a peeled covered electric wire.

FIG. 6 is a perspective view showing an in-channel winding brush.

[Explanation of symbols]

 1 Tool main body 2 Operation shaft 3 Bevel gear 4 One-way clutch 5 Brush receiver 6 Channel winding brush 6a Brush 7 Wire piece 8 Wire insertion port 9 Housing 10 Lid 11 hole W Coated wire a Cover layer b Conductor c Oxide film layer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Tanaka, 1-3-8 Shintaka, Yodogawa-ku, Osaka-shi, Osaka Prefecture Toshin Electric Co., Ltd. (72) Koji Takasaki 1-3, Shintaka, Yodogawa-ku, Osaka-shi, Osaka No. 8 Toshin Electric Co., Ltd.

Claims (1)

[Claims] 1. A tool for removing an oxide film layer generated on a conductor surface of a covered electric wire after peeling off a covering layer and a conductor surface of a bare electric wire, the electric wire having an electric wire insertion port corresponding to a diameter of the electric wire. The top has a housing with a polishing mechanism that is configured by combining brush receivers with a wound brush inside the channel, and this housing is rotated on the axis passing through the center of the wire insertion hole by driving the operation shaft. A polishing tool for a tip of an electric wire, comprising a transmission mechanism for allowing the transmission mechanism to include a one-way clutch for rotating the winding brush in the channel in a twisting direction of a conductor inserted into an electric wire insertion port.