JPH0721056Y2 - Passage guide tool for passers - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION This invention is a well-known pneumatic transporter which inverts the inner surface of a soft tube to the outside and propels the inversion part along the inner surface of the tube with compressed air to pass through the tube, and uses this as a guide to pass the target cable. The present invention relates to a guide tool which is used in a type wire passage machine (see Japanese Examined Patent Publication No. 55-38887 and Japanese Utility Model Publication No. 54-45193) to exhibit effects. In particular, this guide tool is an effective guide tool in the case where a cable having a small diameter (for example, an optical cable) is newly installed in addition to an existing cable in one tube by using the guide tube as described above.

[0002]

[Prior Art] and

The effect of the wire passing means using the guide tube as described above is as described in detail in the above publication, and a new cable is laid in parallel with the existing cable in the same pipe. It goes without saying that the best way is to use the same means when trying to do so. However, the biggest difficulty in this case is that the guide tube tends to follow the body surface side of the existing cable in the pipe, so depending on the way the cable is, it will be pulled in the different direction depending on how it is. It didn't work.

Therefore, in the present invention, in order to solve such a problem, a new guide tool as described below is attached to the guide tube, thereby succeeding in the expected passage.

[0004]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a vertical cross-sectional side view for explaining the pattern of a known guide tube in which the present tool is installed at the time of propulsion start. It is fixed to a stationary cylindrical member or collar member 2. The cylindrical members 2 are in this case arranged directly opposite the tubes 3. 4 is a flat tubular guide tool of the present invention, which is slidably attached to the tip of the non-inverted portion of the tube 1.
The sheath 4 of this portion is usually made of a short, lightweight and flexible solid plastic material. Reference numeral 5 is an existing cable in the conduit 3. In this case, three cables are shown, but it is of course possible to consider a case where there is only one cable.

4 to 6 show another embodiment of the sheath member 4 of the present invention. In FIG. 4, the transverse section has a flat shape, both ends are open to the outside, and the guide tube at the tip end. It becomes easy to invert, and at the rear end, it is easy to put on the tube. FIG. 5 shows a case where the guide tube tip has a blade 6 for directing the tip upward, and the tip of the tube is devised so as to face upward, and a large number of small holes 7 are formed on the tube body surface. Has been done. In FIG. 6, the tip portion is a bellows-shaped tube 8 and when it hits the wall of the tube, the bellows repulsive force facilitates escape. In addition, it goes without saying that the tube of the present invention may have various shapes other than the above.

[0006] With the tool of the present invention installed in the guide tube 1, the tube 1 is compressed with compressed air as is known.
When the folded-back portion is propelled in the direction of the arrow in the figure, the tube can pass between the inner surface of the tube and the body surface of the cable without disturbing the forward direction due to the guidance of the sheath member 4 of the present invention. Needless to say, in this case, the distance between the tip of the tool and the folded tip of the guide tube does not change from time to time due to the propelling force of air.

[0007]

[Effects of the Invention] When the guide tool composed of the sheath member of the present invention is provided on the guide tube as described above, the guide tube is propelled by the compressed air by this guide tool, and the existing cable for parallel installation has no effect. It has been found that it can pass through the conduit as expected without any influence, and it is extremely useful when a line such as an optical cable having a relatively small diameter is installed in parallel later.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional side view showing a mode in which a known pneumatic transporter is equipped with the present tool at the time of starting.

FIG. 2 is a horizontal cross-sectional view of the same when it is inserted into a conduit.

FIG. 3 is a partial schematic perspective view showing a state in which a guide tube is covered with the present tool.

[Figure 4] The other embodiment of the present invention tool is shown in FIG.
A side view, (b) is a cross-sectional view taken along the line AA.

[Figure 5] In the figure, showing still another embodiment of the present invention tool
(A) is a side view, (B) is a cross-sectional view taken along the line AA.
It

[Figure 6] In the figure, showing still another embodiment of the present invention tool
(A) is a side view, (B) is a cross-sectional view taken along the line AA.
It

[Explanation of symbols]

 1 Guide tube 2 Cylindrical member 3 Conduit 4 Tool

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Junji Iinuma 1-25 Koniya-cho, Morioka-shi, Iwate Tohoku Electric Power Co., Inc. Iwate Branch (72) Toshio Nakamura 1-25 Konya-cho, Morioka-shi, Iwate Tohoku Electric Power Co., Inc. Iwate Branch (72) Inventor Kikuzo Numabukuro 1-25 Konyacho, Morioka-shi, Iwate Prefecture Tohoku Electric Power Co., Inc. Iwate Branch (72) Inventor, Atsushi Ishikawa 4-chome, 1-chome, Miyagino-ku, Sendai, Miyagi Prefecture No. 1 within Yutec Co., Ltd. (72) Inventor Takashi Sato 4-53 Mitake, Morioka City, Iwate Prefecture Within Yutec Co., Ltd. Iwate Branch (72) Masaki Nagata 2-12-1 Kamiosaki, Shinagawa-ku, Tokyo Okura Electric Industry Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A well-known air type of a type in which an inner surface of a soft tube for a wire passage guide of a device in a conduit is inverted to the outside and the inversion portion is propelled by compressed air along the inner surface of the tube and is passed as a guide. In a transmission type liner, the line of equipment inside the conduit of the liner
A wire guide tool for a wire machine, which is composed of a lightweight, flexible, short and fixed sheath that is slidably attached to the non-inverted tip of the soft guide tube when the propulsion is started.