JPS644279Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a steel wire correction 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,
No. 184628, No. 56-184629, No. 58-20710, etc., as shown in Fig. 4, a flexible pipe P buried in a concrete slab S is bent at a predetermined angle at the rising part thereof, and a cap C is attached. We have proposed a flexible tube stand-up support device using iron wire W that is installed inside the tube while being supported by the tube. 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 straightening operation opening 2 extending along the length of the cylindrical body 1 is formed at an appropriate position on the side wall of the cylindrical body 1 through which the iron wire W for raising the flexible tube P is inserted. The support pieces 3 made of elastic material attached to the front and rear edges of the correction operation port 2 elastically urge the correction press body 4, which moves back and forth in the radial direction of the cylindrical body 1, toward the outside of the cylindrical body 1 through the correction operation port 2. They were made to appear and support them at will.

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.

By applying a straightening pressing force by the straightening press body 4 to the iron wire W inserted into the cylindrical body 1, the bent state is made straight, and in order to improve the straightening efficiency, Normally, a correction operation opening 2 is formed and disposed approximately in the center of the cylindrical body 1. The correction pressing body 4 is formed in the shape of a suitably thick disk that is elongated in the front and back, and has a correction surface 4A located inside the cylindrical body 1.
The front and rear portions of the iron wire W are rounded so as to correct the bent iron wire W, for example, to improve smoothness when the iron wire W is forcibly moved in a pressed state. Further, the operation pressing surface 4B located outside the cylindrical body 1 is formed into a wave shape to prevent slippage of the fingers performing the pressing operation and to increase the pressing force.

It is sufficient that the correction pressing body 4 itself is advanced and retreated in the radial direction of the cylindrical body 1. At that time, when moving forward as if recessed, the iron wire rod W inserted through the cylindrical body 1 is strongly pressed to apply forward force. When released, the tubular body 1 is designed to automatically and resiliently protrude outward and return to its original position. Therefore, the correction pressing body 4 is supported by elastic support pieces 3 attached to the front and rear edges of the correction operation opening 2 at the front and rear thereof. Figures 1 and 2
In the figure, the rear portions of the pair of front and rear rectangular support pieces 3 are fixed to the front and rear edges with rivets 5 or the like so that the front portions protrude into the correction operation opening 2, and the correction pressing body 4 is attached to the front and rear of the correction operation opening 2. The correction pressing body 4 is supported by inserting the front part of the support piece 3 into a support recess 6 formed in the support recess 6 . In the case of FIG. 3, the correction pressing body 4
A support piece 3 in the form of a band is inserted through a support hole 7 drilled along the front and back direction of the support piece 3, and is mounted on the correction operation port 2 by a rivet 5 or the like so as to be slidable back and forth. By doing so, the correction pressing body 4 is supported. In any case, the correction pressing body 4 is connected to the cylindrical body 1
It is sufficient that the support means is elastically moved in and out in the radial direction of the support means, and is not limited to the structure of the support means shown in the drawings.

This device is constructed as described above, and when used, as shown in FIGS. 2 and 3, the iron wire W in a bent state is inserted into the cylindrical body 1. Large bends are mainly corrected by forcibly moving the iron wire W within the cylindrical body 1 while also utilizing the openings at both ends of the cylindrical body 1, and pressing force by the straightening press body 4 is applied to the iron wire W within the cylindrical body 1. By doing so, mainly small bends are corrected, and furthermore, by moving the iron wire W while applying a forced pressing force, a predetermined bend is corrected into a straight line.

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. In addition, by applying a pressing force by the correction pressing body 4, it is possible to straighten the tube into a straight line.
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.

A straightening operation opening 2 is formed in the cylindrical body 1 itself into which the iron wire W is inserted, and a straightening pressing body 4 that moves forward and backward in the radial direction of the cylindrical body 1 is attached to the straightening operation opening 2 by means of a support piece 3 made of an elastic material. Since it is supported so that it can freely come out and go out, the straightening press body 4 presses the iron wire W against the inner wall of the cylindrical body 1 for the bent iron wire W inserted through it, which results in strong and reliable straightening. It becomes a pressing effect. Moreover, since the support piece 3 itself is made of an elastic material,
This makes the movement of the correction pressing body 4 smooth, and the fact that the cylindrical body 1 is elastically biased outward allows the cylindrical body 1 to quickly return to its original position in an outwardly protruding state. You can get back to work quickly and get back to work.

On the other hand, the correction pressing body 4 is supported by the support pieces 3 attached to the front and rear edges of the correction operation opening 2 which is elongated along the length direction of the cylindrical body 1, so that the cylindrical body There is no problem in forcibly moving the iron wire W inserted into the iron wire W even if a pressing force is applied to it.

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 the drawing]

The drawings show an embodiment of this invention; Fig. 1 is an exploded perspective view, Fig. 2 is a sectional view of the device in use, and Fig. 3 is a cross-sectional view of the device in use.
The figure is a sectional view of another embodiment in use.
The figure is a cross-sectional view showing an example of the use of iron wire for standing up flexible pipes. S...Concrete slab, P...Flexible pipe, C
... Cap, W ... Iron wire material, 1 ... Cylindrical body, 2
...Correcting operation port, 3... Support piece, 4... Correction pressing body, 4A... Correction surface, 4B... Operation pressing surface, 5...
...Rivet, 6...Support recess, 7...Support hole.

Claims (1)

[Scope of utility model registration request] A straightening operation opening that is elongated along the length of the cylindrical body is formed at an appropriate position on the side wall of the cylindrical body through which the iron wire for starting a flexible tube is inserted, and elastic For standing up a flexible tube, characterized in that a straightening press body that advances and retreats in the radial direction of the cylindrical body is elastically biased outward from the cylindrical body at the straightening operation opening and is supported by a support piece made of material so that it can move in and out of the cylindrical body. Iron wire straightener.