JPH11234840A - Power wire brush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify and facilitate polishing of a bare wire, by forming wire through hole at the end of a hollow cylinder main body in which steel pins are planted on the inner peripheral wall surface, installing a support shaft on the base end surface, inserting a bare end of a lead wire in the through hole, and rotating the main body. SOLUTION: A wire through hole 2 is formed in the central part of the tip end surface of a hollow cylinder main body 1. A closed wall 1a to which a support shaft 7 is fixed is formed on the base end surface of the main body 1. A lot of steel pins 3 are planted on the inner peripheral wall surface 1b of the main body 1, toward the center line of the main body 1. A space which has an almost circular section and is continuous to the through hole 2 is formed, and tips of the steel pins 3 are made on a brush surface. The support shaft 7 fixed on the base end surface of the main body 1 is engaged with a shaft hole 8 of an electric driver D. The bare wire part of the lead wire W is inserted in the through hole 2 of the tip end surface. The surface of the bare wire is scrubbed and polished with the rotating brush surface. As a result, an oxide film and deposit of fats and oils or the like on the bare wire surface of a twisted wire are completely eliminated in a short time, and electric contact is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire brush for polishing a bare wire portion of a wire terminal such as a lead wire.

[0002]

2. Description of the Related Art Conventionally, for example, an integrating wattmeter is provided in each house to measure the amount of electric power used. The integrated wattmeter is usually mounted in an extremely narrow space between the outer wall of a house and the outer wall of an adjacent house. By the way, the integrating wattmeter is replaced with a new one every ten years or at the time of moving. At this time, the bare wire portion of the lead wire terminal to be inserted into the connecting terminal portion of the integrating wattmeter has the surface thereof. Often, there is a deposit such as an oxide film or oil lipid that deteriorates the electrical contact, so the bare wire was rubbed and polished by hand using a patterned wire brush one by one. .

[0003]

As described above, since the integrating wattmeter is mounted between the walls, the bare wire portion of the lead wire terminal must be polished with a patterned wire brush in a narrow space. However, the handle of the wire brush hinders the movement of the wire brush, making it difficult to move, making it difficult to polish, resulting in poor work efficiency and leaving unpolished parts. Therefore, the present invention has been made to solve the problems found in the prior art, and is an electric wire brush which is easy to work even in a small work place, and can shorten the work time and improve the efficiency. It is intended to provide.

[0004]

In order to achieve the above object, an electric wire brush according to the present invention comprises a hollow cylindrical main body having a wire insertion hole opened at a distal end surface and a base end surface closed. An innumerable steel needle whose tip is directed to the center line of the tubular body is implanted on the inner peripheral wall surface of the tubular body, and fitted into the fitting shaft hole of the electric screwdriver along the center line on the outer surface of the base end surface. The spindle is projected, and the spindle is inserted into a fitting shaft hole of a separately prepared electric screwdriver, and the cylindrical main body is rotated about its center line by operation of the electric screwdriver held in one hand. While inserting the bare wire end of the lead wire into the cylindrical main body from the wire insertion hole, the surface of the bare wire portion can be efficiently polished with the tip of the rotating steel needle group.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment 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 formed of a cylinder made of ABS resin having good electric characteristics. The tubular main body 1 has an electric wire insertion hole 2 formed at the center of the distal end surface, and the base end surface is formed in a hollow closed by a closing wall 1a. Innumerable steel needles 3 are implanted on the inner peripheral wall surface 1b of the cylindrical main body 1 in a plane toward the center line of the cylindrical main body 1 and communicate with the electric wire insertion hole 2 along the center line. A space 4 having a substantially circular cross section is formed, and the tips of countless steel needles 3 are brush faces. Also,
A stainless steel disc 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 to prevent wear of the closed wall 1a.

On the outer surface of the closed wall 1a of the tubular main body 1, a holding cylinder 6 is integrally provided so as to be located at the center thereof.
The shaft 7 is fitted into and fixed to the shaft. The support shaft 7 is for fitting into a fitting shaft hole 8 at the tip of the separately prepared electric screwdriver D, and is provided along the center line, and both the fitting shaft hole 8 and the support shaft 7 are provided. It has a hexagonal cross section. A small-diameter portion 10 is formed on the outer peripheral surface near the base end of the cylindrical main body 1 via a step 9. The outer peripheral surface of the small-diameter portion 10 has a diameter and a length of the space 4 and other items according to the size of the electric wire. Is attached. The tubular main body 1 may be arranged in various colors with different colors according to the thickness of the electric wire.

The steel needle 3 is bent in a dogleg shape in the direction of rotation of the tubular main body 1 as shown by the arrow in FIG. Like that. Further, the steel needle 3 is not limited to the one directly implanted on the inner peripheral wall surface 1b of the tubular main body 1, but the steel needle 3 is implanted on the surface of a base material formed of a bendable material. A so-called needle cloth may be adhered and fixed to the inner peripheral wall surface 1b of the tubular main body 1.

As shown in FIGS. 4 and 5, the electric wire brush B constructed as described above has a support shaft 7 fixed to the base end of the cylindrical main body 1 and a distal end of a known portable electric driver D. Is fitted into the fitting shaft hole 8 provided in the first hole. The electric screwdriver D is rotatable forward and backward. Then, hold the grip portion G of the electric screwdriver D with one hand and switch SW
By operating the electric wire brush B, the bare wire portion C of the terminal of the lead wire W held in the other hand is inserted from the electric wire insertion hole 2 provided on the distal end surface of the tubular main body 1 while rotating the electric wire brush B. Rub the surface with a rotating brush. By rubbing in this manner, deposits such as an oxide film and oil lipids on the surface of the bare wire portion C are removed in a very short time and deeply into the gaps between the stranded wires, so that good electrical contact can be obtained. State.

It is to be noted that, when the electric screwdriver D is rotated at a high speed, the bare wire portion C can be polished quickly and neatly. When the polished lead wire W is pulled out from the electric wire brush B, the electric wire brush B can be prevented from coming off the electric screwdriver D by rotating the electric wire brush B. Further, as described above, by forming the cylindrical main body 1 from an ABS resin having good electrical characteristics, the withstand voltage performance is excellent, and the lead wire W can be safely polished even when it is a live wire.

[0010]

As described above, the electric wire brush according to the present invention can be easily mounted on a known electric screwdriver, and the lead wire is inserted into the electric wire brush which is rotated by operating the electric screwdriver. It can be easily polished simply by inserting the bare wire part of the terminal.For example, even if the integrating wattmeter is installed in a narrow space where it is difficult to work, the bare wire of the lead wire terminal to be connected to the connection terminal part The part can be easily polished without being restricted by the place, 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 state of use.

FIG. 5 is a sectional view of a main part showing the use state.

FIG. 6 is a sectional view taken along line XX of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical main body 1b Inside wall surface 2 Electric wire insertion hole 3 Steel needle 7 Support shaft 8 Fitting shaft hole B Electric wire brush D Electric screwdriver

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yasushi Miwa 3-1-32 Minato-ku, Nagoya-shi, Aichi Prefecture Toenec Head Office Annex (72) Inventor Mikio Urano 115-20 Nakajima, Akaike-cho, Nisshin-shi, Aichi Prefecture (72) Inventor Eiichi Murakami 4-4 Hiromi Kitamachi, Seki City, Gifu Prefecture

Claims (1)

[Claims] 1. A hollow cylindrical main body having an electric wire insertion hole formed in a distal end surface and a closed base end surface, and an innumerable number of inner peripheral wall surfaces of the cylindrical main body having a distal end directed to a center line of the cylindrical main body. An electric wire brush, wherein a steel needle is implanted, and a support shaft inserted into a fitting shaft hole of an electric screwdriver protrudes along an outer surface of the base end surface along the center line.