JPS64694Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a branch clamp for a live wire type covered electric wire, which is provided with a connecting plate that bites into the covered electric wire.

Conventionally, the commonly used branching work for covered wires for power distribution is to simply remove a predetermined amount of the covering portion of the covered wire using a peeling tool, and then attach a branch to the exposed wire body with the covered portion removed. The wire portions of the covered wires must be entwined to make branch connections, which is extremely troublesome work. Of course, in this case, the power must be turned off, and from this point of view as well, an inefficient branching method is adopted.

In view of the above-mentioned circumstances, the present invention provides a simple branching clamp that can branch a covered electric wire by simply pinching it.

That is, the present invention provides a pair of clamp bodies with parallel main line receiving grooves, a connecting plate with biting teeth is interposed between the main line receiving groove and the branch receiving groove, and a tightening bolt is arranged in the center. This is a branch clamp that can reliably connect branch lines by simply inserting the main line into the main line receiving groove and the branch line into the branch line receiving groove and tightening them.

Hereinafter, the present invention will be described with reference to drawings of embodiments.

Reference numeral 1 designates a pair of branch clamp bodies made of an insulating material such as hard PVC and having main line receiving grooves 2 and branch line receiving grooves 3 on both sides parallel to each other. The two clamp parts 1a and 1b are fitted together with two receiving holes 4b arranged in the center of the other clamp part 1b, with two mortise and tenon shaft parts 4a protruding from the front and back for the tenon fitting 4. It is said that Reference numeral 5 designates connection plates for connecting conductors at three locations at front, rear, and center positions between the main line receiving groove 2 and the branch line receiving groove 3 of each of the clamp parts 1a and 1b, and are formed protruding from both ends of the connecting plate 5. A plurality of biting teeth 6 are installed in the main line receiving groove 2 and the branch line receiving groove 3 so as to protrude inwardly, respectively, by being partially embedded. 7 is each branch line receiving groove 3 of the clamp parts 1a and 1b.
The blocking pieces 7 are opposed thin-walled bendable blocking pieces that stand up on either the front end or the rear end of the branch line receiving groove 3 when the pair of clamp parts 1a and 1b are fitted together. , 7, the hollow chamber part a
It is designed to prevent the infiltration of dust, rain, etc.
Reference numeral 8 denotes a catch seat fitted to the bottom surface of one of the clamp parts 1a, and a screw hole 9 for use with a nut is bored at a location of the catch seat 8 corresponding to the position of the mortise shaft part 4a.
Reference numeral 10 denotes a tightening seat fitted onto the upper surface of the clamp portion 1b on the tightening side, and the tightening seat 10 has a guide hole 11 for a tightening bolt. In this case, the tightening seat 1
0 is a flat plate type clamping seat 10' that comes into close contact with the surface of the clamp part 1b as shown in FIG. 3A, or the clamp part 1b is curved upward with the center part as shown in FIG. 3B.
Resilient type clamping seat 10″ that creates a gap with the surface
You can also use it as Of course, the use of the elastic type tightening seat 10'' makes the tightening of the tightening bolt 12 more reliable.In other words, the clamp parts 1a, 1 opposite to the tightening bolt 12 can be tightened more reliably.
The shaft hole 4 of the mortise and tenon shaft portion 4a which becomes the 4th part of the tenon fitting part b
a' and the receiving hole 4b from the guide hole 11 side of the tightening seat 10, and screw the threaded portion 12a at the tip of the tightening bolt 12 into the threaded hole 9 of the receiving seat 8 on the opposite side. , a pinch type branch clamp 13 that tightens the clamp parts 1a and 1b. Reference numeral 14 denotes an insulating compound that is applied in a laminated manner to the entire groove surface of each main line receiving groove 2 and branch line receiving groove 3 having an arc shape.
4 is the main line 15 to be laid, the main line receiving groove 2 and the branch line 1
This improves the adhesion between the connecting plate 6 and the branch wire receiving groove 3, and prevents rust from forming on the biting teeth 6 of the connecting plate 5 when not in use.

To explain this function, first, when branching the covered wire, the clamp parts 1a and 1b of the combined clamp body 1 are separated by removing the tightening bolt 12 passing through the center.
Among these, the clamp part 1a on the side from which the branch line 16 is drawn out
Alternatively, use pliers or the like to cut out the closing piece 7 that stands up perpendicularly at the end of the branch line receiving groove 3 of the clamp part 1b to open the opening b.
I will keep it as such.

Here, one main body is the clamp part 1.
Attach the desired position of the main wire 15, which will become a covered electric wire, to part 2 of the main line receiving groove a, and similarly, place the end of the branch wire 16, which will become a covered electric wire, to part 3 of the branch line receiving groove parallel to the main line receiving groove 2. Guide from the opening b side. Under this condition, the clamp part 1b, which becomes the other lid, is inserted into the receiving hole 4b with the centrally located mortise and tenon shaft part 4a.
Fit them together to form a closed lid, and then screw the tip of the tightening bolt 12 inserted into the clamp part 1b into the screw hole 9 of the seat 8 on the clamp part 1a side and tighten. This pair of clamp parts 1a, 1
Since b is tightly sandwiched, the main line 15 in each main line receiving groove 2 and the branch line 16 in the branch line receiving groove 3
The biting teeth 6, 6 of the orthogonal connecting plates 5 penetrate the respective coating layers 15a, 16a, and the central electric wire portion 15b,
16b, and the left and right main lines 15 and branch lines 16 are in a connected state. Of course, in this case, each biting tooth 6 has a pointed structure with a length reaching the electric wire portions 15b and 16b. In addition, the branch line receiving groove 3 is formed with an arc slightly narrower in width than the arc of the main line receiving groove 2 because the branch line 16 generally uses an electric wire that is slightly thinner than the main line 15. Even if there is a section, the one on the branch line side is formed to be slightly smaller than the biting tooth 6 section on the main line side.

That is, the main line receiving groove 2 of the clamp body 1 is directed to the main line 15 part, the branch line 16 is guided to the branch line receiving groove 3 of the clamp body 1, the tightening bolt 12 is tightened, and the pair of clamp parts 1a, 1b, the biting teeth 6, 6 of the connecting plate 5, which is spanned between the main line receiving groove 2 and the branch line receiving groove 3 on each side,
Cut into the main line 15 and branch line 16, respectively, and each electric wire portion 1
5b and 16b, the branch connection is completed at once.

Figures 8 to 10 show another embodiment, which is used for relatively thin coated wires. That is, in this case, the clamp parts 1a, 1
Since b is small, only two connecting plates 5 are required, and one tightening bolt 12 is used. Of course, as described above, this connecting plate 5 is inserted between the main line receiving groove 2 and the branch line receiving groove 3 of one clamp part 1a of the clamp body 1, and the main line receiving groove 2 and the branch line receiving groove 3 of the clamp part 1b, respectively. It becomes.

At this time, when in use, the closing piece 7 on the drawer side at the end of the branch line receiving groove 3 is bent to guide the branch line 16, and the main line 15 is guided into the main line receiving groove 2, and in this state, the pair of clamps are It is sufficient to align the parts 1a and 1b and insert and tighten the tightening bolt 12. In this case, the biting teeth 6 are sized to fit the thin wire.

As mentioned above, the present invention has a connecting plate with biting teeth formed at both ends, which is inserted between the main line receiving groove and the branch line receiving groove, which are provided parallel to each other in a pair of split clamp bodies. The configuration is such that a tightening bolt is arranged, and the branch of the covered electric wire is simply guided directly to the main line receiving groove of the clamp body, and the branch line is guided to the branch line receiving groove and passed through the tightening bolt. Just by tightening the connection plate, the biting teeth of the connection plate will automatically bite into each electric wire and make a branch connection. Of course, in this case, the main line is pulled out at both ends of the main line receiving groove, the main line receiving groove opening is blocked by the main line itself, and the receiving groove is coated with a compound that is applied to the groove, and the branch line receiving groove is in contact with the main line. Since a blockage piece remains at the non-pulled end, the branch line receiving groove opening is blocked by the branch line itself, and the compound adheres tightly, allowing rainwater to enter the clamp body.
There is no intrusion of obstacles such as dust. Furthermore, the pair of clamp bodies are held together using a mortise-and-tenon fitting structure that prevents sliding at the part that passes through the tightening bolt, so both clamp parts are parallel to each other and narrow when tightening with the tightening bolt. Therefore, the biting teeth into the coated electric wire, together with the configuration in which the protruding shape of the biting teeth faces the center, reliably face the core of the coated electric wire, allowing connection without malfunction (non-contact). Moreover, since the connection between the main line and the branch line is made by biting teeth of a plurality of connecting plates from the upper and lower directions, once they are engaged, there is no risk of them loosening or separating during use. Moreover, the best feature of this invention is that there is no need to peel off the insulated wire members for both the main line and the branch line, so you can work on live wires without turning off the power when branching work, and it is possible to work on live wires. A one-touch operation is required for only combinations, and from this point of view as well, it has practical effects such as making branching work more efficient.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view, FIG. 2 is a side view, FIG. 3 is a sectional view, FIG. 4 is a perspective view with the clamp body separated, and FIG. 6 is a plan view of the connection plate, FIG. 7 is a plan view of the connection plate in use, FIG. 8 is a slope view showing another embodiment, FIG. 9 is a side view, and FIG. 10 is a perspective view of the clamp body separated. 1... Clamp body, 1a, 1b... Clamp part, 2... Main line receiving groove, 3... Branch line receiving groove, 4...
Mortise fitting, 4a...Tonon shaft portion, 4b...Receiving hole, 5
... Connection plate, 6 ... Biting tooth, 7 ... Closure piece, 8
...Catch, 10...Tightening seat, 12...Tightening bolt.

Claims (1)

[Scope of utility model registration request] A main line receiving groove and a branch line receiving groove are provided on both sides that are parallel to each other, and a tenon shaft part is provided protruding from the center part, and at least perpendicular to the front and rear positions of the main line receiving groove and the branch line receiving groove at the upper part of both ends. A connecting plate formed with biting teeth is buried so that the biting teeth protrude from the receiving groove surface, and a bendable closing piece is provided on one edge of the branch line receiving groove. , a main line receiving groove and a branch line receiving groove are provided on both parallel sides, a tenon receiving hole is bored in the center part, and a groove is provided in the upper part of both ends at least perpendicular to the front and rear positions of the main line receiving groove and the branch line receiving groove. A connecting plate formed with embedded teeth is embedded so that the embedded teeth protrude from the receiving groove surface, and the other clamp body is provided with a bendable closing piece on one edge of the branch line receiving groove. A branch clamp for a covered electric wire, in which the pair of clamp bodies are aligned and a tightening bolt is inserted into the tenon shaft portion and the tenon receiving hole.