JP2012120333A - Lead-in cable support - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support jig suitable for binding lead-in cables such as optical drop cables into a bundle.SOLUTION: A support body 1 is constructed with a rectangular frame body made of synthetic resin, in which side pieces 1b, 1b' are disposed oppositely to each other on both sides of an upper piece 1a, and a gap between free ends of bottom pieces 1c, 1c' contiguous to the lower ends of the side pieces 1b, 1b' is made to be an entry space 5 for a lead-in cable a. A fitting piece 2a is provided upright at the side piece 1b on one side of the support body 1, and a long hole 6 through which to insert a screw rod 20 of a split-wire metal fittings B is provided for the fitting piece 2a. Also the entry space 5 is provided with a closing piece 3b for partially closing the entry space 5, whose base part is secured to the bottom piece 1c' on one side of the support body 1 and whose tip part consists of a leaf spring getting close to and away from the bottom piece 1c on the other side.

Description

  The present invention relates to a support tool used when a drawing cable (generally, an optical cable) is newly arranged along a support wire (messenger wire) installed between utility poles.

  To add a cable such as a lead-in cable to an existing cable suspending device in which a spiral cable hanger is assembled to a support line installed between utility poles and the cable is supported by the spiral cable hanger, the spiral cable hanger is used. A cable that is connected to the drawstring by pulling the drawstring from the other utility pole side, passing the drawstring from the other utility pole side to the other utility pole side through the drawstring threading tool from the one utility pole side into the cable hanger is passed through the cable hanger. There is known a structure in which an additional or additional structure is provided between both power poles (for example, Patent Document 1, paragraph “0025”). And, it is designed to pull the added cable by attaching a segmented hardware to the support line, and the segmented hardware is a hook part that latches a latch for securing the added cable at one end side, A structure in which a pair of clamping plates that clamp a support wire by clamping with a tightening nut is assembled to the above-described threaded collar part of the metal body having the other end side as a threaded collar part (for example, Patent Document 2). . In short, there is no structure of the present invention.

JP-A-9-135510 Japanese Utility Model Publication No. 1-58231

  The conventional cable adding device employs a configuration in which a new cable is additionally installed in a certain space (inside the spiral cable hanger) occupied by the existing cable, so that the work is complicated, and the new cable is installed. In some cases, it is not possible to secure the space for the construction and construction.

  The present invention was devised for the purpose of providing a support that is suitable for stretching a drawing-in cable such as an optical drop cable along a support line and making it a bundle.

  Assembling a pair of clamping plates that are clamped with a tightening nut and clamped on the threaded part of the hardware body with one end side hooked to the cable clamp and the other end side threaded A side cable is provided on both sides of the upper piece, and a space between the free ends of the bottom piece connected to the lower end of the side piece is provided between the free ends of the lead-in cable. A rectangular frame body that constitutes the support body, a mounting piece is erected on one of the side pieces of the support body, and a through-hole through which the screw rod of the split metal fitting is inserted into the mounting piece And a closing piece made of a leaf spring in which a base portion is fixed to one of the bottom pieces of the support body and a tip portion of the support gap comes in contact with and separates from the other bottom piece. It is.

  According to the present invention, a bundle of lead-in cables that are installed along a support line using a split metal fitting (whether existing or new) attached to the support line and are arranged below the support line. In addition, since it can be engaged and disengaged from the support body using the spring property of the closing piece to make a bundle, it can be surely bundled and specified when necessary It is possible to provide a support tool with excellent workability, which can be applied to retraction by separating it from the main body.

The perspective view which shows a use condition. The partially expanded view of FIG. The top view of FIG. The side view of FIG. The front view of a support tool. The side view of a support tool. The bottom view of a support tool. Xx sectional drawing of FIG. The disassembled perspective view of a support tool.

  The support tool A for the retractable cable according to the present invention is configured by assembling the support body 1, the attachment material 2, and the closing material 3 to each other.

  The support main body 1 has side pieces 1b and 1b 'provided on both sides of an upper piece 1a provided with a recessed portion 4 in the center of the upper surface, and the upper piece 1a and the lower pieces of the side pieces 1b and 1b'. The bottom pieces 1c and 1c ′ protruding in parallel directions are provided relative to each other, and the free end portion of the bottom pieces 1c and 1c ′ located immediately below the top piece 1a is used as a lead-in cable introduction gap 5. It consists of a resin body.

  The attachment material 2 is formed by bending a metal plate. The attachment portion 2a is provided with a vertically long slot 6 in the middle of the upper side, and the lower portion continuous with the attachment portion 2a. The assembled piece 2b is formed by bending into a shallow lateral groove shape.

  The closing member 3 is formed of a metal body formed by projecting three closing portion pieces 3b, 3b, 3b, which are made of leaf springs on one side along the longitudinal direction of the thick base piece 3a, at equal intervals. .

  Then, the support A for the retractable cable is provided on the lower ridge 8 provided on the lower edge of the base of the bottom piece 1c on the side piece 1b side, and the lower horizontal portion 200b ′ of the assembly piece 2b of the attachment material 2 is attached. In the recess 10 provided in the surface portion of the upper body piece 1a, the one side piece 1b and the one bottom piece 1c of the support body 1 so as to lock the long hole 9 provided in Are inserted into the side piece 1b through the through-hole 11 provided in the vertical surface 200b of the assembled piece 2b, and the support body 1 and the mounting material 2 are assembled together. Of the support body 1 to which the attachment material 2 is assembled, on the other side piece 1b 'side, provided at the free end (lower end) portion on the other bottom piece 1c' side of the side piece 1b ' A locking portion provided at the center of the base piece 3a by inserting the blocking member 3 into the long hole 13 and fitting the thick base piece 3a. By engaging the piece 300a with the side piece 1b ', screwing the screw nail 14 into the hole 15 provided in the side piece 1b' from the surface side, and assembling the closing member 3 to the support body 1 can get.

  That is, the support A for the lead-in cable includes the bottom pieces 1c and 1c ′ which are provided with the side pieces 1b and 1b ′ on both sides of the upper piece 1a and are connected to the lower ends of the side pieces 1b and 1b ′. The support body 1 is composed of a synthetic resin rectangular frame with the gap between the free ends as the lead-in gap 5 of the lead-in cable c. Then, an attachment piece 2a is erected on one of the side pieces 1b of the support body 1, and a long hole 6 is provided in the attachment piece 2a for inserting the screw rod 20a of the segment metal fitting B. The gap 5 is partially provided with an introduction gap 5 in which a base is fixed to one bottom piece 1c ′ of the support body 1 and a tip part is formed of a leaf spring that contacts and separates on the other bottom piece 1c. A closing piece 3b for closing is provided.

  The retractable cable support A according to the present invention includes a support wire a (the one shown in the figure is a support wire for a so-called daruma cable, but may be made of a wire). Although it is used by being assembled to a segmented metal fixture that is sandwiched and attached between the clamping plates 21 and 21, the segmented metal fixture B itself is not necessarily limited to the structure shown in the drawing.

  The support tool A has the attachment piece 2a of the support tool A at the tip of the screw rod 20a portion of the hardware main body 20 protruding from the tightening nut 22 that fastens the clamping plates 21 and 21 of the segment metal fitting B. 6) (for adjusting the amount of protrusion of the support A from the wire B) is inserted and combined with the screw rod 20a portion, and a clamping nut 24 is screwed onto the tip of the screw rod 20a portion protruding from the long hole 6. By being tightened, they are assembled and supported on the segmented hardware B attached on the support line a, and are installed along the support line a with an appropriate interval.

  The support cable 16 is supported by the lower pieces 1c and 1c ′ so that the lead-in cable c is passed through the support space 16 formed by the support tool body 1 of the support tool A supported by the support wire a via the segment metal B. When the retractable cable c is already installed, the retractable cable c is guided to the introduction gap 5 by utilizing the inclination of the lower piece 1c or 1c ', and the closed portion 3b (embodiment) is utilized by utilizing the spring property. However, if the cable c can be smoothly inserted into and removed from the support space 16, there is no problem with either a single sheet or four or more sheets.) When the retractable cable c is newly added by engaging in the space 16, after the stretched cable c is stretched between the utility poles, the above-mentioned segmented hardware B is arranged in an appropriate number along the cable support line a. In the same way as above to the support A assembled in The cable c is assembled and supported.

  The segment metal fitting B is a combination of a pair of clamping plates 21 and 21 for clamping the support wire a to the screw collar portion 20a of the hardware body 20 formed by arranging the screw collar portion 20a and the hook portion 20b in parallel. The clamping plates 21 and 21 clamp the support wire a by attaching the fastening nut 22 screwed to the flange portion 20a, and are attached to the support wire a. Then, in this attached state, a fastening device (known) D is assembled so as to hook the annular retaining ring portion Da formed on the hook portion 20 b of the hardware body 20, and the retaining space D is inserted into the support space 16. The support line portion c ′ of the retractable cable c held in this manner is assembled, and the retractable cable c is retracted (retained) into the building.

  Further, the recessed portion 4 is for engaging the cable portion Ca ′ of the daruma-shaped cable Ca having the support wire a as a constituent material, and the support wire a and the retractable cable c are close to each other, Can be prevented, and the support wire (including the case of only steel wire) and the lead-in cable c can be integrated.

DESCRIPTION OF SYMBOLS 1 Support tool main body 1a Top piece 1b, 1b 'Side piece 1c, 1c' Bottom piece 2 Attachment material 2a Attachment piece 5 Introducing gap 6 Long hole

Claims (1)

  Assembling a pair of clamping plates that are clamped with a tightening nut and clamped on the threaded part of the hardware body with one end side hooked to the cable clamp and the other end side threaded A side cable is provided on both sides of the upper piece, and a space between the free ends of the bottom piece connected to the lower end of the side piece is provided between the free ends of the lead-in cable. A rectangular frame body that constitutes the support body, a mounting piece is erected on one of the side pieces of the support body, and a through-hole through which the screw rod of the split metal fitting is inserted into the mounting piece In addition, the introduction gap portion is provided with a closing piece made of a leaf spring in which a base portion is fixed to one bottom piece of the support body and a tip portion contacts and separates from the other bottom piece. Cable support.

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