JPS644280Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a steel wire straightening tool for raising flexible pipes, and is mainly used when burying synthetic resin flexible pipes for inserting electric wires, which have been increasingly used in concrete building construction, on floor slabs. To easily and quickly straighten the bends of iron wires that are bent at a predetermined angle after use of internal iron wires used for standing up, and to enable prompt reuse. It relates to orthodontics.

In recent years, flexible pipes made of synthetic resin, which are easy to pipe, have excellent corrosion resistance, durability, and are easy to handle, have been increasingly used for the insertion of electric wires during concrete building construction. However, when a flexible pipe is buried in a floor slab or other surface and its end is raised up to connect to an outlet box or other outlet, it is difficult to stand it up and stand up on its own because the pipe itself is highly flexible. It was hot. Therefore, the present applicant, for example,
Concrete slab S as shown in Figure 5 as No. 184628, No. 56-184629, No. 58-20710, etc.
We have proposed a flexible tube rising support device using an iron wire W which is bent at a predetermined angle at the rising portion of a flexible tube P buried inside the pipe and is internally supported by a cap C. Since such iron wire W is an internal type, it was possible to remove it after use and reuse it, but when reusing it, it is difficult to insert it into another flexible tube P with the bent part intact. It is difficult to straighten the iron wire W, and since the rising portions may be different, it is necessary to straighten the iron wire W into a straight line each time.

Therefore, this invention was devised in view of the above points, and it can easily and quickly straighten the bent state of iron wire after use, and is also portable and easy to handle on site. The aim is also to provide excellent orthodontic devices.

This invention will be explained below with reference to the drawings.
In one embodiment, a cylindrical body 1 is formed into which an iron wire W for raising a flexible tube P is inserted, and this cylindrical body 1 has a straightening edge on its open end or side wall to abut against the iron wire W. Hole-shaped bend correction parts 2, 3, 4,
5 was formed.

Therefore, the cylindrical body 1 has a sufficient inner diameter to allow the iron wire W in a bent state to be inserted smoothly, and has a robustness that does not easily break or become distorted depending on the iron wire W. For example, if the inner diameter is 2
It is made of iron pipe with a length of about 20 cm and a wall thickness of 2 mm.

The hole-shaped bend correction parts 2, 3, 4, and 5 have their opening edge portions as correction edges, and apply a correction pressing force to the outer surface of the inserted iron wire W from an appropriate direction. This is intended to correct the curvature. The bend correction parts 2, 3, 4, and 5 are formed on the open end or side wall of the cylindrical body 1 itself so that they can be used in various ways depending on the degree of bending that has occurred in the iron wire W.

1 to 3, an appropriate number of large circular bend correction parts 2 are drilled on one end opening of the cylindrical body 1, and the other end openings are made to face each other. A circular bend correction part 3 and a rectangular bend correction part 4 are bored out. That is, as shown in FIG. 3, a large circular bend correction section 2, a small circular bend correction section 3, and a rectangular bend correction section 4 are used in various ways depending on the degree of bending of the iron wire W.
It shall be inserted into any of the bend correction parts 2, 3, and 4 so as to penetrate the cylindrical body 1 in the radial direction, and at this time, it may be formed in a straight line within the cylindrical body 1, or
The cylindrical body 1 may be formed into a broken line shape, and the cylindrical body 1 may be
This is done while rotating the object even slightly around its axis.

In FIG. 4, one end opening of the cylindrical body 1 is
The arcuate bend correction portion 5 is formed by connecting two arcuate portions with different radii of curvature to form a substantially daruma shape. According to this, a large bend in the iron wire W inserted through the cylindrical body 1 is corrected at an arcuate edge with a large radius of curvature, and a small bend is also corrected at an arcuate edge with a small radius of curvature.

Of course, the arcuate bend correction part 5 is a cylindrical body 1
The above-mentioned bend correction portion 2 is formed at the opening edge of the
Since 3 and 4 are formed on the side wall of the cylindrical body 1, there is no problem in having them coexist, but rather it is preferable that they coexist.

This device is constructed as described above, and when used, as shown in the figure, the bent iron wire W is inserted into the cylindrical body 1 and the openings at both ends of the cylindrical body 1 are utilized. By forcibly moving the body within the cylindrical body 1, mainly large bends are corrected (see Figs. 2 and 4), and the respective bend correction parts 2, 3, 4, and 5 are used to mainly correct small bends. This is to correct the bend (see Figures 3 and 4).

Therefore, when the iron wire W inserted to stand up the flexible tube P and bent at a predetermined angle is removed after burying the flexible tube P and reused, the iron wire W is inserted into the cylindrical body 1. Also, the bending correction parts 2, 3, 4,
By correcting it in step 5, it can be straightened into a straight line, and even if it is inserted into another flexible tube P, the rising part is different,
Re-bending can also be done very easily. In addition, in order to reliably maintain the rising shape, even if the iron wire W has a structure in which two wires are twisted together as shown in the figure, it can be straightened quickly. It can be configured compactly, making it convenient to carry, and
Since no special power is required, it is easy to handle on site.

Since the cylindrical body 1 itself allows the insertion of the iron wire W, it is possible to force a large bend just by forcibly inserting the iron wire W into the cylindrical body 1.
Since the hole-shaped bend correction parts 2, 3, 4, and 5 are formed with the correction edges that come into contact with the bend correction parts 2, 3, 4, and 5, depending on the degree of bending of the iron wire material W, any of the bend correction parts 2, 3, By selecting 4 or 5 and using it while considering the direction in which it applies to the correction edge, various bends can be corrected. Not only that, but the bending correction part 2,
Since holes 3, 4, and 5 are formed in the open end or side wall of the cylindrical body 1, the structure can be constructed without performing any troublesome processing on the cylindrical body 1.

As explained above, according to this invention, after using the internal iron wire used to raise the flexible pipe on the floor slab, the bend of the wire bent at a predetermined angle can be easily and quickly corrected. In addition to being able to be reused quickly, it also has extremely useful effects in practice, such as being easy to carry and being easy to handle in the field.

[Brief explanation of drawings]

The drawings show an embodiment of the invention; Fig. 1 is a perspective view, Fig. 2 is a cross-sectional view in a state of use, Fig. 3 is a perspective view of another state of use, and Fig. 4 is a view in another embodiment. The perspective view and FIG. 5 are cross-sectional views showing examples of use of the iron wire. C... Cap, P... Flexible pipe, S... Concrete slab, W... Iron wire, 1... Cylindrical body, 2
...Large circular bend correction section, 3...Small circular bend correction section, 4...Rectangular bend correction section, 5...Circular bend correction section.

Claims (1)

[Scope of utility model registration request] A cylindrical body is formed through which the iron wire for raising a flexible tube is inserted, and a hole-shaped bend correction part is formed on the open end or side wall of the cylindrical body, and the straightening edge is brought into contact with the iron wire. An iron wire straightening tool for standing up flexible tubes.