JPH036102Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a tool for forming branch connections of cables such as communication cables and power cables.

Currently, many of the cable branch connections formed when branching cables are constructed using heat-shrinkable tubes. As shown in Figure 1, the branch connection part of the above cable is a heat-shrinkable tube (heat-shrinkable material) attached to the branch connection part of the cable.
The heat-shrinkable tube 1 is formed by covering the cable with a heat-shrinkable tube 1 and shrinking the heat-shrinkable tube 1 by subjecting it to heat treatment. After heat-treating and shrinking the heat-shrinkable tube 1, conventionally, the heat-shrinkable tube 1 is heated as shown in FIG. The heat treatment was performed after the heat-shrinkable tube 1 between the branch cables 2 and 3 was held between the branch cables 2 and 3 using holding clips 4 and 5 as shown in A and B.
The clip 4 is composed of holding plates 4a, 4b and a connecting plate 4c integrally connected to one end of each of the holding plates 4a, 4b, and is formed in a U-shape on the side. The above clip 5 is a holding plate 5
a, 5b, 5c and these holding plates 5a, 5b, 5c
A connecting plate 5d is integrally connected to one end of each of the connecting plates 5d, and the side surface is formed in a V-shape. For example, when the heat-shrinkable tube 1 is held between the clips 4, the heat-shrinkable tube 1 is held between the holding plates 4a and 4b as shown in FIG.
The clip 4 is fitted onto the heat-shrinkable tube 1 so that the In this way, the clip 4 holds the heat-shrinkable tube 1 between the branch cables 2 and 3.
Or, if the heat-shrinkable tube 1 is heat-treated by sandwiching it between the cables 2 and 5, as shown in FIG. This means that it will be possible to form a

However, it has been found that the above-mentioned holding clips 4 and 5 have the following drawbacks.

(a) Holding plates 4a, 4b, 5a of clips 4, 5,
The distance between the clips 5c is always constant, and the gap is large enough to allow the heat-shrinkable tubes 1 to be inserted easily when they are overlapped, so it is difficult to fit the clips 4 and 5 onto the heat-shrinkable tubes. It takes time to fit it on.

(b) Because the lengths of the clamping plates 4a, 4b, 5a, and 5c cannot be made that long due to the structure of the clips 4 and 5, the heat-shrinkable tube 1 cannot be completely clamped. As shown in FIG. 2, the heat-shrinkable tube 1 between the branch cables 2 and 3 causes a poor connection, resulting in a gap between the heat-shrinkable tubes 1.

This idea was made in view of the above circumstances,
The purpose is to provide a tool for forming a cable branch connection that can easily and completely pinch a heat-shrinkable tube, and that can form a cable branch connection with high sealing protection performance. By combining a toggle mechanism and a link mechanism, the heat-shrinkable tube can be completely clamped in one motion.

This invention will be explained below with reference to the drawings.

FIGS. 5 and 6 show an embodiment of the cable branch connection forming tool according to this invention. The cable branch connection forming tool (hereinafter simply referred to as the tool) according to this invention is composed of a support rod 10, a first connecting link 11, a second gripping piece 12, and a second connecting link 13.

As shown in FIG. 7, the support rod 10 includes a first clamping piece 14 and a first gripping piece 15 that is integrally connected to the base end of the clamping piece 14 so as to be substantially perpendicular to the first clamping piece 14. It is composed of. The first clamping piece 14 is tapered toward the tip, and the tip 14a of the first clamping piece 14 is bent diagonally downward (toward the first gripping piece 15 side). Further, a connecting hole 16 is bored near the base end 14b of the first clamping piece 14. The above first gripping piece 1
A protrusion 15a that protrudes toward the right side (the side opposite to the side where the first clamping piece 14 is located) is formed at approximately the center of 5, and a connecting hole 17 is bored in this protrusion 15a. Further, a locking protrusion 15b is formed at the end of the first gripping piece 15 and projects toward the right side, and a locking hole 18 is bored in the locking protrusion 15b.

As shown in FIG. 8, the first connecting link 11 is formed to have substantially the same shape and dimensions as the first clamping piece 14. That is, the first connecting link 11 is tapered toward the tip, and the tip 11a of the first connecting link 11 is diagonally upward (as shown in FIG. 6, the tip 14a of the first clamping piece 14). (in the opposite direction to the bending direction). Further, a second clamping piece 11b protruding downward (on the opposite side to the bending direction of the tip 11a) is formed at the base end of the first connecting link 11, and a connecting hole 19 is formed in the second clamping piece 11b. is drilled. Further, a connecting hole 20 is also bored in the most proximal end portion 11c of the first connecting link 11.

The second gripping piece 12 is a plate-shaped member having approximately the same length as the first gripping piece 15 of the support rod 10, as shown in FIGS. 5 and 6, and the upper part thereof as shown in FIG. Protrusions 12a and 12b are formed on the left side of the holder, and connecting holes 21 and 22 are formed in these protrusions 12a and 12b, respectively.

The second connecting link 13 is connected to the second gripping piece 12.
The second connecting link 13 has connecting holes 23 and 24 at both ends 13a and 13b, respectively.

The support rod 10 and the first connecting link 11 formed as described above are rotatably connected at the base end 14b and the second clamping piece 11b, as shown in FIG. Similarly, the first connecting link 11 and the second link
The grip piece 12 is rotatably connected at its proximal end 11c and protrusion 12a. Further, the second gripping piece 12 and the second connecting link 13 are rotatably connected at the protrusion 12b and one end 13a, and the second connecting link 13 and the support rod 10 are connected at the other end 13b and the protrusion 15a. Rotatably connected.

Next, a method of operating the tool configured as described above will be explained. First, the second gripping piece 12 is released from the support rod 10 as shown by arrow A in FIG. Then, one end 13b of the second connecting link 13 moves in the direction of arrow B in the figure, and the first connecting link 11
The most proximal end portion 11c moves in the direction of arrow C in the figure.
As a result, the space between the first clamping piece 14 and the first connecting link 11 is wide open as shown in FIG. The tool in this state is inserted between the branch cables 2 and 3 as shown in FIG.
The heat-shrinkable tube 1 is positioned between the connecting links 11. Then, the second gripping piece 12 is moved in the direction of arrow D in FIG. 5 to bring it closer to the first gripping piece 15. Then, the one end 13a of the second connecting link 13 becomes E in the figure.
the proximal end 1 of the first connecting link 11
1c moves downward in the figure and connects the first connecting link 1.
1 moves in the direction of arrow G in the figure,
The heat-shrinkable tube 1 is clamped. Here, when the second gripping piece 12 is moved until it comes into contact with the locking protrusion 15b of the first gripping piece 15, the first gripping piece 15 and the second connecting link 13 are moved as shown in FIG. pivot point X, second gripping piece 12 and second connecting link 1
3 and the pivot point Z between the second gripping piece 12 and the first connecting link 11 are aligned, and as a result, the second gripping piece 12 is moved in the direction of the arrow in the figure with force. Unless the first connecting link 11 and the first
The spacing between the clamping pieces 14 does not widen. At this time, the first clamping piece 14 and the second clamping piece 11b are stopped parallel to each other with a gap maintained between them. Therefore, once the heat-shrinkable tube 1 is clamped with this tool, the clamping force will not easily loosen, and the heat-shrinkable tube 1 can be firmly clamped until the heat treatment is completed. As a result, it is possible to form a cable branch connection with high sealing protection. Moreover, after use, this tool can be easily removed from the heat-shrinkable tube 1 by moving the second gripping piece 12 in the direction of arrow A in FIG. 6, so it can be reused any number of times. . Also,
The first gripping piece 15 of the support rod 10 has a locking protrusion 15b.
is provided, and the locking protrusion 15b makes it possible to maintain a constant minimum distance between the first connecting link 11 and the first clamping piece 14. This prevents the heat-shrinkable tube 1 from being damaged by pinching it. Note that the locking protrusion 15b may be provided at the end on the second gripping piece 12 side. Further, the tip end 1 of the first connecting link 11
1a and the tip 14a of the first clamping piece 14 are bent so as to be separated from each other, so when the heat-shrinkable tube 1 is clamped between the first connecting link 11 and the first clamping piece 14, the tip The heat-shrinkable tube 1 will not be damaged by the parts 11a and 14a.

As explained above, the cable branch connection forming tool according to this invention is easy to operate because it combines a doble mechanism and a link mechanism to completely clamp a heat-shrinkable tube in one operation. This has the excellent advantage of being able to form a cable branch/connection section with high sealing protection performance.

[Brief explanation of drawings]

Figure 1 is a perspective view showing the branch connection of the cable;
Figures 2A and 2B are perspective views of a clip for holding a heat-shrinkable tube that is conventionally used to form a cable branch connection, and Figures 3 and 4 show the heat-shrinkable tube of the clip. 5 and 6, which are cross-sectional views for explaining the clamping state, show an embodiment of this invention. FIG. FIG. 6 is a side view showing the state of the tool before clamping, and FIGS. 7 to 10 show parts constituting the cable branch/connection forming tool according to this invention. 7 is a side view of the support rod, FIG. 8 is a side view of the first connecting link, FIG. 9 is a side view of the second gripping piece, and FIG. 10 is a side view of the second connecting link. FIG. 11 is an explanatory diagram for explaining the usage state of the cable branch connection part forming tool according to this invention. 10... Support rod, 11... First connecting link, 1
1b...Second holding piece, 12...Second holding piece, 13
...Second connecting link, 14...First clamping piece, 15
...first gripping piece, X...pivotal point between the first clamping piece and the second connecting link, Y...pivoting point between the second gripping piece and the second connecting link, Z...second gripping piece The pivot point between and the first connecting link.

Claims (1)

[Scope of utility model registration request] The first connecting link 11 includes a generally L-shaped support rod 10 having a first gripping piece 15 connected to a heat-shrinkable first gripping piece 14 and a second gripping piece 12 .
and are rotatably connected to each other via a second connecting link 13, and a second clamping piece 11b is integrally provided on the first connecting link, and connecting holes 19 and 20 of the first connecting link are provided. The distance between them is shorter than the distance between the connecting holes 23 and 24 of the second connecting link, and the pivot point X between the first gripping piece 15 and the second connecting link 13 is made sufficiently close to the second gripping piece 12. At this time, the second clamping piece 11b is connected to the first clamping piece 14.
A tool for forming a branch connection part of a cable, which stops at a position substantially parallel to the above, and has a locking protrusion at the end of the first gripping piece 15 or the end of the second gripping piece 12 to maintain a gap. .