JPH0525455Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a twist brush, and particularly to a twist brush configured to effectively clean or polish the inner part of a hole or pipe.

BACKGROUND OF THE INVENTION In general, twist brushes used for cleaning or polishing the inside of holes or pipes are
There is one shown in the figure. In FIG. 5, the twist brush 1 has two core wires 2 twisted along the longitudinal direction, and the brush material 3 is twisted between the pair of core wires 2 so that the brush material 3 protrudes spirally from the sides of the core wires 2. It is designed to hold. Further, one end 2a of the core wire 2 is cut at a position spaced apart from the brush material 3 to form a handle 2c, and the other end 2b of the core wire 2 is cut near the brush material 3. When cleaning or polishing the inside of the hole or tube (both not shown), hold the handle 2c of the core wire 2 and insert the brush material 3 into the hole or tube.
The brush material 3 is rotated within the hole or pipe or reciprocated in the axial direction.

Problems to be Solved by the Invention However, in the conventional twist brush described above, the end 2 of the core wire 2 is cut toward the tip side of the brush material 3.
Because b protrudes, the end 2b may come into contact with the inner wall at the back of the hole or tube, for example, and in that case, the brush material 3 will not come into contact with the inner wall of the hole or tube and the inner wall will not be cleaned or polished. There is a problem that says it cannot be done. Therefore, when a wire brush material is used to polish the inside of the hole to remove burrs left inside the hole after a plurality of holes are cut, such as in hydraulic equipment, it is necessary to cut the holes in different directions. In the part where is inserted,
The end portion 2b comes into contact with the inner wall of the hole, making it impossible to polish the connecting portion between the holes.

Also, when cleaning the inside of a glass test tube,
Since the end portion 2b of the core wire 2 directly contacts the bottomed portion, the test tube may be broken when the twist brush 1 is slid in the longitudinal direction.

Further, there is another twist brush other than the above-mentioned one as shown in FIG. In FIG. 6, the twist brush 4 is tied together with a wire 5 or the like so that the brush material 3 on the tip side of the twist brush 1 shown in FIG. 5 protrudes toward the tip side. Since the twist brush 4 has a tip brush portion 6 that protrudes toward the tip side from the end portion 2b of the core wire 2, it is possible to clean the inside of the test tube without breaking it, but the problem is that it is not possible to clean the bottom corner of the test tube. There is a point. Further, even in the above-mentioned hydraulic equipment, the twist brush 4 cannot polish the corners where the holes connect.

Therefore, an object of the present invention is to provide a tube brush that solves the above problems.

Means and effects for solving the problems The present invention relates to the above-mentioned twist brush, in which the tip of the core wire which holds the brush material is folded back to form a first tip brush portion which protrudes in a fan shape toward the tip from the end of the core wire and a second tip brush portion which protrudes in a fan shape in a direction perpendicular to the first tip brush portion, and the outer peripheral ends of the first and second tip brush portions are cut in a straight line to form the first and second tip brush portions into an angular fan shape, thereby enabling the brush to effectively clean or polish the innermost parts and corners of holes or pipes which have a relatively small inner diameter.

Embodiment FIGS. 1 to 3 show an embodiment of the twist brush according to the present invention.

In each figure, a twist brush 11 is formed by holding a plurality of brush materials between a core wire 12 folded in half into a U-shape, and the core wire 12 is twisted as described later to form a spiral brush portion 13. Hold the brush material as shown.

As for the material of the brush material, for example, a synthetic resin brush material or animal hair is used for cleaning, and a stainless steel or iron wire brush material is used for polishing.

One end of the core wire 12 extends in the longitudinal direction and forms a handle 14. Further, the U-shaped tip portion 15, which is the other end of the core wire 12, is folded back in the opposite direction, and a wide first tip brush portion 16 protrudes toward the tip side by the tip portion 15, and a first tip brush portion. A second tip brush portion 17 protrudes from both sides of the tip in a direction perpendicular to 16.
is maintained.

The first and second tip brush portions 16, 17 and the brush portion 13 are each cut into a rectangular shape with arbitrary dimensions depending on the inner diameter of the hole or tube to be cleaned or polished. Therefore, when cleaning a test tube using the twist brush 11, the first tip brush portion 1
By inserting the tube into the test tube with 6 at the top and rotating or reciprocating the handle 14, the first and second tip brush sections 16, 17 and the spiral brush section 13 slide on the inner wall of the test tube. to remove dirt that had adhered to the inner wall.

In particular, since the first tip brush part 16 having a square fan shape protrudes from the tip of the twist brush 11, the bottomed part of the test tube can be well cleaned, and the core wire 12 can be directly cleaned during cleaning. It will not come into contact with the test tube and will not break the test tube.
Further, since the corner of the first tip brush portion 16 also comes into contact with the corner of the bottomed portion of the test tube, the entire inner wall of the test tube can be thoroughly cleaned.

In addition, in hydraulic equipment etc. in which a plurality of holes are cut, cutting can be performed by using a twist brush 11 in which wire brush material is held so as to form the shape shown in FIGS. 1 to 3. The burrs in the rear hole are the first and second tip brush parts 16, 17.
and is removed by the spiral brush portion 13.
In particular, burrs at corners where the deep part of a hole connects with another hole,
It is removed by the first tip brush portion 16 that protrudes toward the tip side from the core wire 12.

The twist brush 11 is manufactured by the steps shown in FIGS. 4A to 4E. Here, the manufacturing process will be explained.

First, as shown in FIG. 4A, a core wire 12' is prepared by folding a single core wire into a U-shape. next,
As shown in FIG. 4B, a plurality of brush materials 18 are
It is inserted between the core wires 12a and 12b of the character-shaped tip portion 15 in a direction perpendicular to the core wire 12'.

Further, the end portion and tip portion 15 of the core wire 12' are chucked by chucks (not shown) of a twisting machine, respectively. Then, one chuck is driven to rotate, and as a result, the core wire 12' is twisted as shown in FIG. 4C. Therefore, the brush material 18 is held so as to protrude in a spiral shape to the side of the core wire 12,
A spiral brush portion 13' is formed. Also, core wire 1
2 is twisted along the longitudinal direction to form a handle 14.

Then, as shown in FIG. 4D, the tip portion 15 of the core wire 12 is folded back in the opposite direction. As a result, the brush portion 13 ₁ (shown in FIG. 4C) below the tip portion 15 protrudes toward the tip side from the tip portion 15 to form a fan-shaped first tip brush portion 16′, and the tip portion 1
Brush portion 13 ₂ above 5 (shown in Figure 4C)
is pressed by the folded tip portion 15 to form a second tip brush portion 17' having a substantially fan shape in a direction perpendicular to the first tip brush portion 16'.

As shown in FIG. 4E, finally the first and second tip brush parts 16', 17' and the spiral brush part
The ends of each brush material 3' are trimmed to form square fan-shaped tip brush parts 16 and 17 at the tips, and the protruding dimensions of the brush material at each part are cut into sizes l and d according to the hole diameter to be used. Then, the twisted brush 11 is completed.

In the above embodiment, a U-shaped core wire made by folding one core wire in half was used, but the invention is not limited to this. For example, a brush material may be interposed between two straight core wires, and two Of course, after twisting the core wire, the end portion of the core wire holding the brush material may be folded back in the opposite direction.

Effects of the invention As mentioned above, the twist brush of this invention is
By folding back the tip of the core wire holding the brush material in the opposite direction, square fan-shaped first and second tip brush portions are formed on the tip side of the core wire.
For example, test tubes with a relatively small inner diameter can be cleaned without breaking them, and stains from the bottom corners of the test tubes can also be removed satisfactorily. In addition, burrs generated at the deep corners of the cut holes and the connecting corners between the holes can be effectively removed, and the inner walls of the holes and pipes can be thoroughly cleaned or polished. It has characteristics.

[Brief explanation of the drawing]

Figures 1 to 3 are perspective views, top views, and side views of one embodiment of the twist brush according to the present invention, Figure 4 is a process diagram for explaining the manufacturing process, and Figures 5 and 6 are FIG. 3 is a side view illustrating a conventional twist brush. 11...Twist brush, 12...Core wire, 13
...Brush portion, 15...Tip portion, 16...First tip brush portion, 17...Second tip brush portion.

Claims (1)

[Claims for Utility Model Registration] A twisted brush in which a plurality of brush materials are held between a pair of core wires twisted along the longitudinal direction, and the brush materials protrude in a spiral shape to the sides of the core wires, comprising: A first tip brush portion that protrudes in a fan shape toward the tip side from the end portion of the core wire by folding back the tip portion of the core wire that holds the brush material, and a first tip brush portion that protrudes in a fan shape in a direction perpendicular to the first tip brush portion. 2 tip brush portions, and the outer peripheral ends of the first and second tip brush portions are cut in a straight line to form the first and second tip brush portions into square fan shapes. twist brush.