JP3982896B2 - Electric wire brush - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric wire brush for polishing a bare wire portion of an electric wire terminal such as a lead wire.
[0002]
[Prior art]
Conventionally, for example, each house has been provided with an integrating wattmeter in order to measure the amount of power used. The integrating watt-hour meter is often installed in a very narrow space, usually between the outer wall of a house and the outer wall of an adjacent house. By the way, the integrated wattmeter is replaced with a new one once every 10 years or when moving, but at this time, the bare wire portion of the lead wire terminal to be inserted into the connecting terminal portion of the integrated wattmeter has its surface. In many cases, deposits such as oxide films and oil lipids that make electrical contact worsen are attached, and the bare wire portions were rubbed and polished one by one by hand with a patterned wire brush. .
[0003]
[Problems to be solved by the invention]
Since the integrating wattmeter is installed between the walls in this way, the bare wire part of the lead wire terminal must be polished with a wire brush with a handle in a narrow space, and the handle of the wire brush is obstructive. As a result, the wire brush was difficult to move and was difficult to polish. Not only was the work efficiency poor, but there were also problems that left unpolished parts.
Accordingly, the present invention has been made to solve the problems found in the prior art, and is an electric wire brush that is easy to work in a narrow work place and that can shorten the work time and improve its efficiency. The purpose is to provide.
[0004]
[Means for Solving the Problems]
Electric wire brush according to the present invention in order to achieve the above object, a hollow cylindrical body that is closed by塞壁 a base end surface with opening a wire insertion hole in the distal end surface, the inner circumference of the cylindrical body implanted countless steel needle in contact with the surface of the bare portion of the wire tip to the wall is directed hunger and thirst inserted into the center line of the cylindrical body, a steel needle number of the radio is opposed to the rotation direction of the cylindrical body An electric screwdriver that is prepared in a separate shape by bending a bent shaft into a curved shape and projecting a support shaft that fits into the fitting shaft hole of the electric screwdriver along the center line on the outer surface of the closed wall. Insert the bare wire part of the lead wire terminal into the tubular body through the wire insertion hole while rotating the tubular body around its center line by operating an electric screwdriver held in one hand. The surface of the bare wire can be polished efficiently with the tip of the rotating steel needle group. It was so.
At this time, the cylindrical main body is formed of ABS resin, and the stainless steel disc prevents the plug wall from being worn by stopping the end of the bare wire portion of the inserted electric wire on the inner surface of the plug wall of the cylindrical main body. It is preferable to embed.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of an electric wire brush according to the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view of an electric wire brush, and FIG. 2 is a longitudinal sectional view thereof. In the figure, reference numeral 1 denotes a cylindrical main body made of a cylinder made of ABS resin having good electrical characteristics. The cylindrical main body 1 has a wire insertion hole 2 in the center of the distal end surface, and the base end surface is formed in a hollow closed by a closed wall 1a. An infinite number of steel needles 3 are planted on the inner peripheral wall surface 1b of the cylindrical main body 1 so as to face the center line of the cylindrical main body 1 and communicate with the wire insertion hole 2 along the central line. A space 4 having a substantially circular cross section is formed, and the tips of countless steel needles 3 are used as brush surfaces. In addition, a stainless steel disk 5 is embedded to stop the tip of the electric wire inserted into the inner surface of the closed wall 1a at the back end of the space 4 and prevent wear of the closed wall 1a.
[0006]
A holding cylinder 6 is integrally protruded from the outer surface of the closed wall 1a of the cylindrical main body 1 so as to be located in the center, and a support shaft 7 is fitted and fixed to the holding cylinder 6. The support shaft 7 is for fitting into a fitting shaft hole 8 at the tip of an electric screwdriver D, which is prepared separately, and is provided along the center line. Both the fitting shaft hole 8 and the support shaft 7 are provided. It has a hexagonal cross section. In addition, a small-diameter portion 10 is formed on the outer peripheral surface near the base end through a step 9 in the cylindrical main body 1, and the diameter and length of the space 4 and other matters according to the wire size are formed on the outer peripheral surface of the small-diameter portion 10. The label 11 displaying is attached. In addition, you may make it arrange the cylindrical main body 1 in various colors according to the thickness size of an electric wire.
[0007]
As shown by the arrow in FIG. 6, the steel needle 3 is bent into a U-shape facing the rotation direction of the cylindrical main body 1 so that the waist can be strongly contacted with the wire so that the wire can be polished well. Yes. Further, the steel needle 3 is not limited to the one that is directly planted on the inner peripheral wall surface 1b of the cylindrical main body 1, and the steel needle 3 is implanted on the surface of a base material that is formed of a bendable material. A so-called needle cloth may be adhered and fixed to the inner peripheral wall surface 1 b of the cylindrical main body 1.
[0008]
As shown in FIGS. 4 and 5, the electric wire brush B configured in this way is provided with a support shaft 7 fixed to the base end of the cylindrical main body 1 at the tip of a known portable electric driver D. The fitting shaft hole 8 is fitted. The electric screwdriver D can rotate forward and backward. And while gripping the grip part G of the electric screwdriver D with one hand and operating the switch SW to rotate the electric wire brush B, from the wire insertion hole 2 provided in the distal end surface of the cylindrical main body 1 The bare wire portion C of the lead wire W terminal held in one hand is inserted, and the surface is rubbed and polished with a rotating brush surface. By rubbing in this manner, deposits such as oxide film and oil lipid on the surface of the bare wire portion C are removed in a very short time and further to the back of the gap between the stranded wires, and the electrical contact is good. Can be in a state.
[0009]
Note that the bare wire portion C can be polished more quickly and smoothly when the electric screwdriver D is rotated at a high speed. When the polished lead wire W is pulled out from the electric wire brush B, the electric wire brush B can be prevented from being detached from the electric driver D by rotating the electric wire brush B. Further, as described above, by forming the cylindrical main body 1 with an ABS resin having good electrical characteristics, it is excellent in withstand voltage performance and can be polished safely even if the lead wire W remains a live wire.
[0010]
【The invention's effect】
As described above, the electric wire brush according to the present invention can be easily attached to a known electric screwdriver, and the bare wire portion of the lead wire terminal in the electric wire brush that rotates by operating the electric screwdriver. For example, even if an integrating wattmeter is installed in a narrow space where it is difficult to work, the bare wire part of the lead wire terminal connected to the connection terminal part is constrained by the location. It can be easily polished without receiving work, and the working time can be shortened and the working efficiency can be improved.
[Brief description of the drawings]
FIG. 1 is an external perspective view of an electric wire brush according to the present invention.
FIG. 2 is a longitudinal sectional view of the same.
FIG. 3 is a side view of the same.
FIG. 4 is a perspective view showing the same use state.
FIG. 5 is a cross-sectional view of a main part showing the same use state.
6 is a cross-sectional view taken along line XX in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tubular main body 1b Inner wall surface 2 Electric wire insertion hole 3 Steel needle
5 Stainless steel disc 7 Support shaft 8 Fitting shaft hole B Electric wire brush D Electric screwdriver

Claims (2)

Becomes a base end surface with opening a wire insertion hole at the tip surface of a hollow tubular body closed by塞壁 tip on the inner peripheral wall surface of the cylindrical body is directed hunger and thirst inserted into the center line of the cylindrical body Innumerable steel needles that are in contact with the surface of the bare wire portion of the electric wire are planted, the innumerable steel needles are bent in a U- shape facing the rotation direction of the cylindrical body, and the outer wall of the closed wall is An electric wire brush characterized by projecting a support shaft that fits into a fitting shaft hole of an electric screwdriver along a center line. The cylindrical main body is molded from ABS resin, and a stainless steel disc is attached to the inner side surface of the closed wall of the cylindrical main body to stop the end of the bare wire portion of the inserted electric wire and prevent wear of the closed wall. The electric wire brush according to claim 1 embedded.

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