JPS6349066Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a clamp for an overhead line attached to an optical cable.

When attaching a damper or a spacer to an overhead line, the damper or spacer is held on the overhead line by a clamp. On the other hand, it has recently been proposed to attach optical cables to overhead lines to transmit information. However, since the conventional clamp is formed to grip only the overhead wire, when the optical cable is gripped, the optical cable is compressed and transmission loss increases. Therefore, the optical cable needs to bypass the damper and spacer. This has resulted in the drawback that the optical cable is subject to mechanical damage due to vibrations and the like.

An object of the present invention is to provide a clamp that can grip an overhead wire attached to an optical cable without compressing the optical cable.

Embodiments of the present invention will be described with reference to the drawings. FIGS. 1 and 2 show a clamp 10 for an overhead line attached to an optical cable according to the present invention. jaws 14, 16 and fastening means 18 for removably tightening these jaws.
It consists of. One jaw 16 is shown connected to a spacer body 20 in the illustrated embodiment.

The clamping means 18 consist of a clamping rod 24 passing through one jaw 16 and biased upwardly in FIG. 1 by a spring 19 and passing through a hole 22 in the other jaw 14;
The lower end of the tightening rod 24 has a pawl 24a that engages with a stopper 28 that is engaged with the jaw 14 and urged rightward in FIG. 1 by a spring 26. Therefore, when the clamping rod 24 passes through the hole 20 of the jaw 14 and the clamping rod 24 is pushed in against the spring 18 while moving the jaw 14 toward the jaw 16, the stopper 28
along the slope of the claw 24a against the spring 26.
It passes through the pawl 24a while moving to the left in the figure, and when the pawl 24a reaches below the stopper 28, the stopper 28 moves to the right by the spring 26, and the pawl 24a
The two jaws 14 and 16 are tightened. The jaws 14 and 16 are provided with a protrusion 30 and a recess 32 that engage with each other so as to be positioned with each other when tightened.

As shown in FIG. 1, the pair of jaws 14 and 16 have gripping surfaces 34 and 36 for gripping the overhead wire 1, and one gripping surface 34 is penetrated by the optical cable 2 attached to the overhead wire 1. It has a groove 34a. Therefore, the optical cable attached overhead line 3 is connected to the optical cable 2.
can be gripped by the clamp 10 without compressing it. Incidentally, an elastic layer made of glass fiber, heat-resistant rubber, heat-resistant plastic, etc. can be provided on the inner surface of the groove 34a.

According to the present invention, as described above, the optical cable-attached overhead wire can be held in the clamp without compressing the optical cable, so there is no need to detour the optical cable with a damper or spacer, thus increasing the transmission loss of the optical cable. without mechanical damage due to detours.

[Brief explanation of the drawing]

1 and 2 are a front view and a top view of a clamp for an overhead line attached to an optical cable according to the present invention. 1... Overhead line, 2... Optical cable, 3... Optical cable attached overhead line, 10... Clamp, 14, 1
4... Jaw, 18... Tightening means, 34, 36...
Gripping surface, 34a...groove.

Claims (1)

[Scope of utility model registration request] An overhead wire clamp comprising a pair of jaws and a tightening means for removably tightening the pair of jaws, the pair of jaws having a gripping surface for gripping an overhead wire; 1. A clamp for an overhead line attached to an optical cable, wherein the surface has a groove into which an optical cable attached to the overhead line passes.