JP2002227282A - Cable holder for cable in pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable holder capable of fixing a plurality of cable retaining holders which can be opened downward only when a cable retaining piece is pushed in a drilled hole made to the inner wall of a sewer pipe. SOLUTION: The cable holder comprises a cable retaining portion 36 with a claw 35 protruded at the entry having an almost U-shape opened downward, cable retaining pieces 38 having small-sized cable holding portions 37 with the same shape at both the sides of the holding portion, and an attaching portion 39 protruded and formed to the cable retaining piece 38 and attached to the sewer pipe 41, the attaching portion 39 is equipped with an expanding slot, a pressure sensitive adhesive is filled at the top, the attaching portion 39 has a bottomed vertical hole into which a plunger pin 42 is fitted and inserted, and the whole is formed in one united body with a resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable holder for fixing and supporting a cable such as an optical fiber drawn into a pipe such as a sewer pipe to an inner wall of the pipe.

[0002]

2. Description of the Related Art JP-A-8-103 discloses a cable holder.
No. 012 has a cable holding portion vertically protruding and has a mounting portion in which an adhesive is inserted and a plunger pin is inserted in an upper portion, and a mounting portion is provided in a drill hole formed in a pipe inner wall of a sewer pipe. Is disclosed, in which an adhesive is extruded from an attachment portion by pushing a plunger pin, and the adhesive is fixed.
No. 61924 discloses a cable holder which has a mounting portion formed of a screw portion, an inverted U shape which opens downward, a claw which projects inward in the opening, and is previously mounted on a sewer pipe.

[0003]

Among the above-mentioned cable holders, the latter, which is open downward, can detach the cable from the cable holder even when a radial shear force is applied to the pipe due to an earthquake or the like. It has the advantage of not damaging the cable, but it is not designed to be attached to the existing sewer pipe, and if it is necessary to add a new cable separately from the existing cable in the pipe, When different cables, for example, a trunk line and a branch line are to be separately attached to the cable holder, it is necessary to attach a new cable holder or a plurality of cable holders.

[0004] In this regard, the former cable holder can be attached to an existing sewer pipe, and since it has a plurality of cable holding portions, a new cable is added and attached. Can be attached to a separate cable holder, but the gap between the inner wall of the sewer pipe and the cable holder is narrow, making it difficult to hook the cable. May damage the product.

It is an object of the present invention to provide a cable holder having a plurality of downwardly opening cable holding portions, which can be attached to an existing sewer pipe by a single attaching operation.

[0006]

According to the first aspect of the present invention, there is provided a holding bracket having a plurality of downwardly opening substantially U-shaped cable holding portions in a lateral direction, and a holding metal fitting between the cable holding portions is pierced into an inner wall of a sewer pipe. An anchor having an attachment portion that is pushed into the drilled hole, the bottomed vertical hole formed in the attachment portion of the anchor from above is filled with an adhesive, and a plunger pin is inserted. I do.

[0007] According to the present invention, it is possible to fix the holding fitting having a plurality of cable holding parts that open downward by simply pressing the attachment part of the anchor into the inner wall of the sewer pipe and bonding and fixing the attachment part to the inner wall of the sewer pipe. it can.

The invention according to claim 2 is characterized in that, in the invention according to claim 1, the holding fitting is attached to the anchor in a state where it is prevented from rotating by the rotation stopping means. According to the present invention, since the holding bracket is prevented from rotating,
The cable holding part is always held in a fixed direction and position,
There is no hindrance to cable insertion by the robot.

The rotation stopping means used in the present invention includes, for example, a protrusion such as a pin protruding from one of the anchor and the holding fitting, and a recess or a hole formed on the other and fitted with the protrusion. A polygonal part such as a quadrangle or the like is formed on the anchor, and a polygonal hole is formed in a holding fitting into which the polygonal part is fitted. A key is projected from the anchor and the holding part is fitted with the anchor. One in which a keyway is formed in a hole of a metal fitting can be used.

According to a third aspect of the present invention, in the invention according to the second aspect, there is provided a claw comprising a spring body having a rotation preventing means projecting obliquely upward on both sides of the anchor, and having an upper end portion having an inverted V-shaped cross section. It is characterized in that it is a fitting hole formed on the holding metal fitting, into which the claw is fitted.

According to the present invention, when the holding fitting is inserted into the anchor, and the toe is pressed against the fitting hole, the claw is pushed in such a direction that the claw is closed inward at the hole edge of the fitting hole, and the hole edge is at the claw upper end. When the finger slides to reach below the upper end of the claw, the claw is restored and opened outward, and is locked to the edge of the hole to prevent the support bracket from coming off. Therefore, the rotation stopping means of the present invention performs the function of stopping the rotation of the holding fitting and preventing the holding fitting from coming off.

According to a fourth aspect of the present invention, there is provided a resin holder having a plurality of downwardly opening cable holding portions in a lateral direction, a drill hole protruding from the holder and drilled in an inner wall of a sewer pipe. And a resin-made mounting portion that is pushed into the mounting portion, and a vertical hole with a bottom formed in the mounting portion from above is filled with an adhesive and a plunger pin is inserted.

According to the present invention, similarly to the invention according to the first aspect, a holding tool having a plurality of cable holding portions that open downward by simply pressing the mounting portion into the inner wall of the sewer pipe and bonding and fixing the mounting portion is provided. It can be fixed to the inner wall of the pipe.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The cable holder shown in FIG.
A holding metal fitting 2 having cable holding parts 1 on both left and right sides, and an anchor 3 for attaching the holding metal fitting 2 to a sewer pipe (not shown) at the center portion. The holding metal fitting 2 has a substantially C-shaped outer fitting 4 and an inner fitting. And two metal fittings 4,
Although not shown in the center of FIG. 5, a rectangular hole constituting a rotation stopping means is formed in the center portion. When the two holes are aligned with each other, the cable holding portions 1 are formed on both left and right sides.

The anchor 3 is made of resin, and has a support portion 3a of the holding fitting 2 at an intermediate portion, a screw portion 3b as an attachment portion having a notch groove (not shown) at the upper portion, and a bottomed vertical hole (not shown). The supporting portion 3a has a circular cross section at the lower side and a rectangular cross section at the upper side, and the upper portion together with the rectangular hole constitutes a rotation stopping means, and the upper portion fits into the rectangular holes of the metal fittings 4,5. The holding fitting 2 is prevented from rotating, and the holding fitting 2 fitted to the upper part of the support part 3a is supported by the lower part of the circular cross section.

An adhesive is filled in a vertical hole formed in the upper part of the anchor from above, and a plunger pin 6 is inserted. When the plunger pin 6 is pushed in, the filled adhesive is extruded. Has become.

The cable holder shown in FIG. 2 has a structure in which four cable holders 12 as cable holding portions in which the holding brackets 11 form an Ω (ohm) shape are connected at regular intervals to a connecting bracket 13. A rectangular hole (not shown) forming a rotation stopping means is formed in the center of the metal fitting 13.

The anchor 14 has the same structure as the above-mentioned anchor 3, and is designed to stop and support the holding fitting 11 in the same form as the holding fitting 2 described above. In the figure, 15 is the same plunger pin as the plunger pin 6.

In the cable holder shown in FIG. 3, the holding bracket 21 has a reinforcing rib 22 formed as shown in FIG.
It has a structure in which a cable holder 23 as a pair of (ohm) -shaped cable holders is connected by a connection fitting 24, and a circular part 25 to which a plunger pin described later is fitted is provided at the center of the connection fitting, The circular part 25 is located on the left and right of the circular part 25.
And a hole formed by a fitting portion 26 as a fitting hole constituting a rotation stopping means.

The anchor 25 is made of resin. The upper part has a small diameter and a step with the lower part. The anchor 25 has a notch groove (not shown), a screw is engraved on the outer periphery, and a vertical hole with a bottom is formed from above. ing. The vertical hole is filled with an adhesive, and the plunger pin 28 is inserted.

The lower part, which forms a step with the upper part, supports the holding fitting 21 fitted to the upper part, and the claws 31 are inclined obliquely upward on both sides with the upper part interposed therebetween, as shown in detail in FIG. It protrudes. The claw 31 is flexible and has a hook shape having an inverted V-shaped cross section at its upper end. The circular portion 25 of the hole formed in the connection fitting 24 is inserted into the upper portion of the anchor, and the fitting portion 26 is clawed. 31 and push it in.
When the claw 31 is pushed inward at the edge of the hole, and the edge of the hole slides along the upper end of the claw and reaches below the upper end, the claw 31 is restored and opens outward, and is engaged with the edge of the hole to rotate around the holding fitting 21. It is designed to keep the stopper together with the stopper.

The cable holder shown in FIG. 6 is entirely made of resin and has a substantially U-shape that opens downward.
5 having a cable holding portion 36 having a small-sized cable holding portion 37 having the same shape on both sides thereof.
8 and a mounting portion 39 protruding from the holder 38 and attached to the sewer pipe 41. The mounting portion 39 has a split groove, is filled with an adhesive at an upper portion, and has a plunger pin 4.
2 has a bottomed vertical hole (not shown) into which is inserted.

[0023]

According to the first aspect of the present invention, the holding fitting can be fixed to the inner wall of the sewer pipe only by pushing the anchor mounting portion into the drill hole drilled in the inner wall of the sewer pipe, and a plurality of openings downwardly opening. Can be attached to an existing sewer pipe by a single attaching operation.

According to the second aspect of the present invention, since the plurality of cable holding portions are always mounted in the same direction, there is no hindrance to the insertion of the cable by the robot. According to the third aspect of the present invention, when the holding metal fitting is mounted, the rotation is prevented and the retaining is performed. According to the invention according to claim 4, the entire cable holder is made of resin and can be manufactured at a low cost by integrally molding.

[Brief description of the drawings]

FIG. 1 is a front view of a cable holder according to the present invention.

FIG. 2 is a front view of another example of the cable holder according to the present invention.

FIG. 3 is a front view of still another example of the cable holder according to the present invention.

FIG. 4 is a plan view of a holding bracket of the cable holder shown in FIG. 3;

FIG. 5 is an enlarged front view of a main part of the anchor of the cable holder shown in FIG. 3;

FIG. 6 is a front view of another example of the cable holder according to the present invention.

[Explanation of symbols]

 1. Cable holders 2, 11, 21 Holding brackets 3, 14, 27 Anchor 4 Outer brackets 5, Inner brackets 6, 15, 28, 42 Plunger pins 12, 23, 36 , 37 Cable holder 13, 24 Connection bracket 25 Circular part 26 Fitting part 31, 35 Claw 38 Holder 39 Attachment part 41 Sewer pipe

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H02G 9/00 H02G 9/00 C (72) Inventor Hiroshi Yoshikawa 5-33-11 Shimbashi, Minato-ku, Tokyo Japan Inside Hume Co., Ltd. (72) Inventor Masaaki Nishiwaki 5-33-11 Shimbashi, Minato-ku, Tokyo Within Japan Co., Ltd. (72) Inventor Shuyoshi Komatsubara 2-6-1 Otemachi, Chiyoda-ku, Tokyo Tokyo Metropolitan Sewer Within Service Co., Ltd. (72) Inventor Tatsuo Minaka 4-6-8, Nishi-ku Commerce and Industry Center, Hiroshima-shi Within CONSEC Co., Ltd. (72) Inventor Akira Kobayashi 4-6--8, Nishi-ku Commerce and Industry Center Hiroshima City, within CONSEC Co., Ltd. F Terms (reference) 2D063 BA11 BA20 BA32 3H023 AA04 AB04 AC04 AC21 AC32 AC35 AD02 AE11 AE12 3J022 DA01 DA11 DA12 EA33 EB14 EC14 EC17 EC22 FA05 FB04 FB05 F B12 FB16 HA03 HB02 HB06 5G369 AA12 AA19 BA04 CB01 CB10 DC02 EA01

Claims (4)

[Claims] A plurality of cable holding portions opening downward;
A holding bracket having a laterally extending portion, and an anchor having a mounting portion which is pressed into and attached to a drill hole drilled in the inner wall of the sewer pipe through the holding bracket between the cable holding portions, and a bottom formed at the mounting portion of the anchor from above. The vertical hole is filled with an adhesive and a plunger pin is inserted into the cable holder. 2. The cable holder for an in-pipe cable according to claim 1, wherein the holding fitting is attached to the anchor in a state where the holding fitting is prevented from rotating by a rotation stopping means. 3. A claw formed of a spring body having a V-shaped cross-section at its upper end, and a fitting hole formed in the holding metal fitting, wherein the claw is fitted. The cable holder for an in-pipe cable according to claim 2, wherein: 4. A plurality of cable holding portions opening downward,
It has a resin holder having a lateral direction, and a resin mounting portion projecting from the holder and being pressed into a drill hole drilled in the inner wall of the sewer pipe and mounted. A cable holder for an in-pipe cable, characterized in that a vertical hole with a bottom is filled with an adhesive and a plunger pin is inserted.