JPH047631Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use The present invention relates to a drop-in cable tie-down device, and more specifically, it is mainly used to tie-down drop-in cables such as telephone lines.

Conventional technology Conventionally, as a tie-down device for a telephone line drop-in line,
Various types of structures have been devised, and among these, the fastening device described in Japanese Utility Model Publication No. 1379/1983 has become widely used due to its simple structure. Its structure is as described in the above publication, but its outline is as follows:
This is as shown in FIGS. 4 and 5, and the operation is as shown in FIGS. 6 and 7.

That is, it consists of a main body a made of hard synthetic resin and a ring b made of steel wire. and the main body a
consists of a first guide 1, a second guide 2, and a support line snap stop part 8. The first guide 1 also includes a rectangular plate-shaped bottom plate 3 and an inverted truncated cone (on the bottom plate 3 It has a first winding part 4 having a columnar shape (with a taper in which the outer diameter decreases as it approaches the outer diameter), and a circular plate-shaped top flange 5 connected to the first winding part 4. ing. Further, the second guide part 2 includes a second winding part 6 which is connected to the top flange part 5 in an extended manner toward the ring b, and a second winding part 6 which is connected to the second winding part 6 on the left and right sides. It has tabs 7, 7' provided on the sides. In other words,
As shown in FIG. 5, the second guide 2 has a horizontal T.
It has a letter-shaped shape and is connected to the top flange 5 of the first guide. In addition, the support line snap stop part 8 is
A support line holding part 9 which is connected to the bottom plate part 3 and has a columnar shape and projects upward; and this support line holding part 9.
It has a top plate part 10 connected to the top plate part 10. Further, the ring b is fixed to the bottom plate portion 3 of the first guide 1. That is, both ends of the ring b are firmly embedded from the inside of the bottom plate part 3 to the inside of the support wire holding part 9, as shown by dotted lines in FIGS. 4 and 5.

In the drop-in line anchorages configured as shown in FIGS. 4 and 5, as shown in FIGS. 6 and 7, the ring b, and then wrap the support wire d from the back to the front of the first winding part 4 of the first guide 1 while suppressing it with the support wire holding part 9 (see arrow e) (see arrow e). (see arrow g), wrap it further towards the back, then wrap it from the front side of the second wrapping part 6 of the second guide 2 to the upper surface (see arrow g), and finally wrap it around the ear piece 7'. It ends by passing through the underside (see arrow h).

Problems to be Solved by the Invention In the conventional lead-in wire fastener, as shown in FIGS. 4 and 5, there is a special Since no protrusions are provided, the support line d passes through the upper surface of the second winding part 6, as shown by the arrow g in FIGS. After passing through the lower surface of the lug 7', the operator may move the support line d to the lower surface of the other lug 7 without bending it further, as shown by the arrow h in FIG. Since the ring B is immediately moved to the retaining hook C, there is a problem in that the retaining force is insufficient. Further, as shown in FIG. 4, there is a level difference between the upper surface of the second winding part 6 and the lower surface of the lug 7, which means that the lower surface of the lug 7 is lower than the second winding part 6. Since it is too lower than the upper surface of the attachment part 6, it is difficult to guide the almost rigid support wire d from the upper surface of the second winding part 6 to the lower surface of the ear piece 7, as shown by arrows g to h in FIG. This was very difficult, especially when working outdoors during the winter, which resulted in a reduction in efficiency. The present invention aims to solve these problems.

Means for Solving the Problem A third guide projecting upward from the bottom plate is provided near the bottom of the ear piece of the second guide. The upright surface of the third guide facing the first winding part was inclined in a direction toward the first winding part as it goes upward. Furthermore, the lower surface of the lug and the upper surface of the second winding portion were made to be approximately on the same level.

Function Since the second guide has a third guide protruding upward from the bottom plate near the bottom of the lug, the support line passing through the lower surface of one lug can pass through the lower surface of the other lug. , further bent by the third guide. Therefore, the retention force increases significantly. Furthermore, since the lug, the lower surface, and the upper surface of the second winding section are substantially on the same level, guiding the support wire from the upper surface of the second winding section to the lower surface of the lug becomes easy.

Embodiment FIGS. 1 and 2 show an embodiment of the present invention, and FIG. 3 shows its operation.

Numbers 1 to 10 in Figures 1 to 3
are almost the same as in the case of FIGS. 4 to 7 showing the conventional one, and the arrows e to g in FIG. 3 are the same as in the case of FIGS. 6 and 7.

In FIGS. 1 to 3, reference numeral 11 denotes a third guide, which is provided near the bottom of the ears 7, 7' of the second guide 6, and has an edge shape projecting upward from the bottom plate part 3. Made of things. and,
As seen in FIG. 1, the upright surface of the third guide 11 facing the first winding part 4 is inclined in a direction toward the first winding part 4 as it goes upward. Further, 12 in FIG. 1 indicates the upper surface of the second winding portion 6, and 13 indicates the lower surface of the ear pieces 7, 7'.
The upper surface 12 and the lower surface 13 are substantially on the same level, as seen in FIG.

In the lead-in wire tensioning device configured as shown in FIGS. 1 and 2, as shown in FIG. 3, the first guide 1 Wrap it from the back of the first winding part 4 to the front (see arrow f), wrap it further to the back, and then wrap the side part of the second winding part 6 of the second guide 2. Wrapping it from the front to the upper surface (see arrow g) and passing it through the lower surface of the lug 7' is the same as in the case of FIGS. 6 and 7, which show the operation of the conventional one. Now, pass the support line d from the lower surface of one lug 7' to the lower surface of the other lug 7, hang it on the third guide 11, and bend it from the ring b toward the retaining hook c (arrow 1 (see) and end.

That is, as shown from arrow g to arrow i in FIG. 3, the support line d passes through the lower surface of the lug 7' and the lower surface of the lug 7, and then is hooked onto the third guide 11 and bent, so that the retaining force is reduced. increases significantly. Also, since the support line d is made of a rigid material, once like this,
After being forcibly bent at the third guide 11, it undergoes a kind of plastic deformation, so if by some chance the support line d should come off the third guide 11 due to strong winds or other reasons. Even so, the third guide 1
Since the upright surface facing the first winding part 1 of the ear piece 1 is inclined in a direction approaching the first winding part 4 as it goes upward, it is difficult to come off, and also it is difficult to separate from the bottom surface of one ear piece 7' to the other ear piece 7'. through the lower surface of the ear piece 7 of
Since this is after being bent at the guide 11 and subjected to the necessary winding and plastic deformation, the necessary retaining force can be sufficiently obtained. Moreover, ear pieces 7, 7′
Since the lower surface 13 and the upper surface 12 of the second winding portion 6 are at almost the same level, that is, the lower surface 13 of the ears 7, 7' is not too low, so that the support line d
This makes it easier to guide the wire from the upper surface 12 of the second winding part 6 to the lower surface 13 of the lug pieces 7, 7', improving work efficiency. Therefore, the problem of a decrease in the retaining force of the support wire can be avoided.

Effects of the invention The present invention includes a third guide protruding upward from the bottom plate of the first guide near the bottom of the lug of the second guide, so that the support line passes through the lower surface of one lug. is bent further through the underside of the other lug at said third guide, thus significantly increasing the retention force. Furthermore, even if the support wire tries to come off the third guide due to some external force during use, the upright surface facing the first winding part of the third guide will move upward and Since it is slanted in the direction approaching the attaching part, it is difficult to come off, and since it is done after the necessary winding and bending, the necessary retaining force can be sufficiently obtained and it is safe. Moreover, since the lower surface of the lug and the upper surface of the second winding part are at almost the same level, that is, the lower surface of the lug is not too low, the support wire is connected from the upper surface of the second winding part to the upper surface of the second winding part. The work of guiding the lug to the lower surface of the lug piece becomes easier, improving work efficiency, and since the lower surface of the lug piece is not too high, the trouble of lowering the retaining force of the support wire can be avoided.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a plan view, FIG. 3 is a perspective view of the used state, and FIG. 4 is a front view of an example of the conventional technology. FIG. 5 is a plan view, FIG. 6 is a partially cutaway front view of the device in use, and FIG. 7 is a partially cutaway plan view of the device in use. a...Body, b...Ring, c...Retaining hook, d...Support line, 1...First guide, 2...Second guide, 3...Bottom plate, 4...First winding Department,
5...Top flange part, 6...Second winding part, 7, 7'
...Ear piece, 11... Third guide, 12... Upper surface of the second winding part, 13... Lower surface of the ear piece.

Claims (1)

[Scope of utility model registration request] It consists of a main body having a first guide and a second guide, and a ring that engages with a restraining hook fixed to a building, and the first guide includes a bottom plate part to which the ring is fixed, and a bottom plate part to which the ring is fixed; It has a first winding part connected to the bottom plate part, protruding upward, and having a columnar shape around which the support wire of the lead-in wire is wound, and a top collar part connected to the first winding part, The second guide includes a second winding part that extends from the top flange toward the ring, and ears that are connected to the second winding part and are provided on the left and right sides. The lead-in wire anchorage includes a third guide provided near the bottom of the ear piece and protruding upward from the bottom plate, and facing the first winding part of the third guide. The upright surface is inclined in a direction approaching the first winding part as it goes upward, and the lower surface of the lug and the upper surface of the second winding part are approximately on the same level. A lead-in lead fastener featuring: