JPS6341795Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an overhead wire fastening device for communication lines, etc., and in particular, the wire tightening action of a rotatable wire tightening body that applies an eccentric wheel to the wire, and By working together with the wire winding action of the wire-wound bobbin, we aim to simplify the wire retention mechanism as much as possible, strengthen the overhead wire retention force, and simplify the work. It is intended to be

The drawings show an embodiment of a communication line anchor designed to achieve the above object. In the figure, 1 is a rectangular base with a hanging wire 2 at one end, 3 is a wire splicing body arranged on the top surface of the base, and 4 is a wire fastening body to which an eccentric ring can be applied. The filament splicing body 3 and the filament tightening body 4 are arranged side by side with the filament splicing body 3 facing the hanging wire 2 side, and a filament insertion groove 5 is formed at the spacing between the two.

The filament splicing body 3 is fixed integrally with the base 1, while the filament fastening body 4 is rotatably attached to the base 1 by a fixed shaft 6, and A filament splicing surface 3a inserted into the groove 5 on the side surface of the filament splicing body 3
A filament engaging surface 4a is formed on the circumferential surface of the filament fastening body 4, respectively. The filament joining surface 3a is preferably an arcuate concave curved surface that is substantially in alignment with the arcuate circumferential surface of the filament engagement surface 4a. Further, the filament fastening body 4 has a short diameter arc surface part and a major diameter arc surface part centered on the rotation axis 6, and an arc-shaped convex curved surface for filament clamping is formed in the engagement surface 4a area of the long diameter arc surface part. Form 4b. Arc-shaped convex curved surface 4 for tightening the filament
By rotating the filament clamping body 4, b can be displaced outside the filament insertion groove 5 and into the groove, and by displacement outside the groove, the aerial filament 7 can be inserted into the groove. The structure is such that the groove distance is narrowed by displacement into the groove, and the filament is tightened.

Further, a wire winding bobbin 8 is fixedly arranged on the base 1 in line with the other side of the wire tightening body 4, and is attached to the outer periphery of the wire winding bobbin 8 on the rear end side of the base. A linear guide body 9 is arranged. Preferably, the base 1 has a stepped portion 10 formed on its upper surface to provide a height difference, and the filament splicing body 3 and the filament tightening body 4 are placed on the same high base surface, and the filament winding is placed on the same low base surface. With each bobbin 8 arranged,
The winding allowance of the filament winding surface 8a of the filament winding bobbin 8 is set to be deeper than the filament engaging surface 4a of the filament tightening body 4, and the filament engaging surface 4a is placed above the filament winding surface 8a. Make it approximately match the area.

The filament winding bobbin 8 and the filament fastening body 4 are provided with flanges 8b and 4c on the heads thereof, respectively, which define the filament winding surface 8a and the filament engaging surface 4a, so that the filament can be wound on each surface. Similarly, the filament attachment body 3 is provided with an overhang 3b that defines a filament attachment surface 3a, and a flange provided on the filament tightening body 4 is provided to prevent the filament 7 from slipping off. Part 4c
In cooperation with this, the filament 7 inserted into the groove 5 is prevented from slipping out.

As described above, with the linear tightening body 4 in the middle,
A wire splicing body 3 is arranged on one side and a wire winding bobbin 8 is arranged on the other side, and the overhead wire 7 is first moved from the utility pole side (the side on which the traction force W acts) using the wire guide body 9 as a guide. It is wound multiple times from bottom to top onto the winding surface 8a of the filament winding bobbin 8. While obtaining a considerable retaining force to counter the traction force applied to the filament due to the winding resistance on the bobbin 8, the filament is further wound around the tightening body 4,
Insert into the filament insertion groove 5. Under the filament insertion state, the filament clamping body 4 is rotated and its protruding curved surface 4b is
is displaced from outside the groove toward the inside of the groove, and by this displacement, the filament 7 is tightened and clamped in the groove 5 between it and the filament attachment surface 3a. In order to rotate the filament clamping body 4 easily and smoothly with a slight force, the top of the clamping body 4 is provided with a groove 4d for engaging a rotation operating tool across the top.

According to the present invention, the tightening body 4 is rotated to displace the protruding curved surface 4b outside the groove in a direction that is in synchronization with the traction force applied to the filament 7 from the bobbin 8 side, as shown by the arrow in the figure. A necessary and sufficient retaining force can be obtained by slightly digging into the vicinity of the entrance of the groove 5. In other words, while winding the filament 7 around the bobbin 8 to obtain a retaining force corresponding to the above-mentioned traction force W,
If the lead-out end of the filament 7 from the bobbin 8 is held by the filament clamping body 4 with a minimum clamping force, it is possible to reliably maintain the retaining force in the bobbin 8. Moreover, when excessive traction force W is generated due to snow loads, strong winds, etc., the protruding curved surface 4b of the clamping body 4 is drawn deeper into the filament insertion groove 5, further increasing the filament clamping force. It is possible to act in the direction of

In either case, unlike cases where the retention force is obtained only by the wire clamping action of the clamping body 4, or when only meandering winding is used, the winding resistance in the bobbin 8 and the wire clamping force of the convex curved surface 4b of the clamping body 4 mutually compensate for each other to obtain the retention force against the traction force W, so that the convex curved surface 4b of the clamping body 4 can obtain sufficient retention force by simply shallowly inserting it into the wire insertion groove 5, and a minimum number of bobbins 8 for winding the wire are sufficient. The coating of communication cables, etc. is soft, and if the necessary retention force was to be obtained only by the clamping action of the clamping body 4, the convex curved surface 4b would have to be pressed deep and powerfully into the groove, which would cause damage to the wire coating.
This may result in damage or breakage of the conductor.

The present invention has the above-mentioned structure, and by combining only the wire clamping body 4, the wire splicing body 3, and the wire winding bobbin 8, the present invention does not cause severe damage to the wire sheathing. A necessary and sufficient retaining force can be obtained, and the retaining force can be strengthened while simplifying the overhead wire retaining mechanism as much as possible. In addition, the work of pinning the filaments can be easily performed without requiring much effort.

The above-mentioned retaining device is entirely made of an insulating material, and the hanging wire 2 is attached by bending the ends of its two arms 2a to both sides of the base 1 as shown in FIG. 2, or as shown in FIG. 6. It is embedded in the base 1 by molding. Moreover, instead of the hanging wire 2, a hanging hand with a hanging hole may be integrally formed on one end of the base.

Further, instead of the groove 4d for rotating the linear tightening body 4, a rotating lever may be attached to the top thereof.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a communication wire holding device showing an embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a side view of the same, and Fig. 4 shows the wire holding state of the holding device. FIG. 5 is a perspective view, FIG. 5 is a plan view of the same, and FIG. 6 is a plan view of the same fastener showing another example of attachment of the hanging wire. 1...Base, 2...Hanging wire, 3...String splice,
4... Line fastening body, 3a... Line attachment surface, 4a...
...String engagement surface, 4b... Arc-shaped convex curved surface for tightening the wire,
5... Line insertion groove, 6... Rotation shaft, 7... Overhead line (communication line), 8... Line winding bobbin, 8a...
Same volume side.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A filament fastening body that can be rotated on a base and a filament attachment body that is fixed to one side of the filament clamping body are arranged, and A filament insertion groove is formed at an interval between the filament tightening body and the filament splicing body, and the filament insertion groove is inserted into the groove on the side surface of the filament splicing body along the filament insertion groove. A filament fastening arc is formed in the filament connecting surface of the filament to form a filament engaging surface on the peripheral surface of the filament tightening body, and the filament fastening arc narrows the interval between the filament inserting grooves in the engaging surface area. A convexly curved surface is formed, and the convexly curved surface is movable to the outside and inside of the groove by rotation of the filament clamping body, and the filament winding is arranged on the other side of the filament clamping body. A wire-wound bobbin is arranged, and wire retention is obtained by winding the wire on the wire-wound bobbin and tightening the wire as the arc-shaped convex curved surface for wire tightening is displaced into the groove. An aerial wire fastening device characterized by having the following structure. (2) The aerial wire retaining device according to the invention described in item 1, characterized in that the top of the wire tightening body is provided with an engagement groove for a rotation operating tool.