JPH0231862Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a wiring connection device for a composite cable.
In particular, without using flexible conduit called flexible conduit or pre-cut tube,
It is designed to enable direct and efficient connection of steel strip armored cables to equipment such as wiring boxes, eliminating the need for the extremely troublesome conduction work of wire bundles to the hollow interior of the conduit, and improving safety. This improvement not only improves the cable's waterproofing effect, but also ensures stable ground contact at all times while making effective use of the cable's exterior steel strip.

Hereinafter, the specific structure of the present invention will be described in detail based on the illustrated embodiment. In FIGS. 1 to 4, 10 is a general term for a composite cable, and the wire bundle 11 includes a wire braided from thin steel wires. An insulating coating 13 of a soft synthetic resin tube is covered with a so-called layered structure via a steel strip 12. Reference numeral 14 is a metal joint body, and a square collar part 15 with a large diameter projects outward from approximately the center thereof, and a male thread is formed on the outer circumferential surface of a semi-cylindrical part 16 that serves as a boundary, so to speak. 17
is engraved. Then, the joint body 14 is attached and fixed to equipment such as a wiring box (not shown) through the packing 20 by the lock nut 18 that is screwed onto the male screw 17 and the synthetic resin bushing 19. ing.

Of course, the corner flange 15 of the joint body 14 functions as a lock for a rotating tool, and a ground terminal 21 is fixed to the outer peripheral surface of the flange 15 by a screw 22. The other semi-cylindrical portion 23 of the joint body 14 whose boundary is the corner flange portion 15 has a tapered straight sloped surface 24 for steel strip separation guide.
The wire bundle 11 of the composite cable 10 and its exterior steel strip 12 are smoothly entered into each other, and separated so that the steel strip 12 is automatically floated from the wire bundle 11. I'm starting to be able to do it. Reference numeral 25 designates a male thread carved in the center of the outer peripheral surface of the semi-cylindrical portion 23.

Further, reference numeral 26 is a metal bag nut, and a female thread 28 is carved into the inner peripheral surface of a rectangular tube portion 27 that projects out to a large diameter from one half of the nut. In addition, a male thread 30 is provided on the outer peripheral surface of the other half of the cylindrical portion 29 having a smaller diameter. Reference numeral 31 denotes a straight steel strip pressing guide slope surface provided on the inner circumferential surface of the boundary between the small diameter cylindrical portion 29 and the large diameter angular cylinder portion 27, and is similar to the steel strip separation guide slope surface 24 of the joint body 14. Correspondingly, when the cap nut 26 is tightened against the joint body 14, the steel strip 12 of the composite cable 10 can be held under pressure between the opposing sloped surfaces 24, 31. . This ensures stable ground contact at all times.

32 is the insulating coating 13 of the composite cable 10 in advance.
It is an annular packing that is inserted into the top, and is made of an elastically deformable material, and its outer peripheral surface is a tapered straight sloped surface 33 for contraction guide. Numeral 34 designates a lock nut which is also fitted onto the insulating coating 13, and is equipped with a female screw 35 that is screwed together with the male screw 30 of the cap nut 26, and has a lock nut at its tip for restraining the packing 32. The inwardly projecting flange portion 36 is continuous. In other words, this lock nut 34 also has a bag shape, and when it is tightened onto the bag nut 26, the packing 32 is compressed to the insulating coating 13 by the contraction of its diameter. . It goes without saying that the outer circumferential surface of the lock nut 34 also has a rectangular shape in which a rotary tool can be locked, similarly to the rectangular tube portion 27 of the cap nut 26.

Based on the above configuration, the connection and fixing operation between the composite cable 10 and the joint body 14 will be explained as follows. That is, while the lock nut 34, the packing 32, and the cap nut 26 are sequentially fitted into the composite cable 10 from one end thereof, the insulating coating 13 is partially peeled off from the one end of the composite cable 10, as shown in FIG. The wire bundle 11 and steel strip 12 are exposed as shown in FIG. Then, by fitting the joint body 14 onto the wire bundle 11 and inserting it into the space between the wire bundle 11 and the steel strip 12 from the tapered steel strip separation guide slope surface 24, After the steel strip 12 is separated from the wire bundle 11 so as to be slightly raised, a cap nut 26 is screwed onto the joint body 14 and tightened.

In this way, the edge of the separated steel strip 12, especially the cut opening, will be connected to the tapered sloped surface 2 of the joint body 14.
4 and the corresponding pressing guide inclined surface 31 of the cap nut 26 are held under pressure, thereby ensuring ground contact between the steel strip 12 and the joint body 14. Therefore, we will continue to use Fukuronatsu 26.
When the lock nut 34 is screwed and tightened to the
3, and the composite cable 10
The anti-falling effect along the longitudinal direction of the packing 3
2, the waterproof effect etc. are completely achieved. still,
By unscrewing the lock nut 34 and the cap nut 26 in the opposite manner to the above, the joint body 14 and the composite cable 10
Of course, it is also possible to release the fixed connection state.

As described above, in the wiring connection device for a composite cable according to the present invention, the tapered steel strip separation guide slope surface 24 that separates the exterior steel strip 12 from the wire bundle 11 of the composite cable 10 in a floating manner is attached to the joint body. 14, and the exterior steel strip 12 is pinched between the steel strip pressing guide slope surface 31 of the cap nut 26 which is screwed and fastened to the joint body 14, and the separation guide slope surface 24. Therefore, compared to the conventional method of connecting wire bundles using flexible conduits, it requires a separate and extremely complicated process to conduct the wire bundles into the hollow interior of the conduit. There is no need to carry out any work, and the wire bundle 11 and sheathing steel strip 12 can be partially exposed from the composite cable 10.
0 can be efficiently connected and fixed in a straight line, stably and robustly.

Further, the joint body 14 automatically enters between the wire bundle 11 and the exterior steel strip 12 due to the tapered sloped surface 24, so that the work can be performed extremely smoothly, and the joint body Since the steel strip 12 is reliably held under pressure by the corresponding inclined surfaces 24 and 31 of the cap nut 26 and the steel strip 12, stable ground contact between the steel strip 12 and the joint body 14 is always ensured. In addition to being highly safe and durable, it also reliably eliminates noise generation.

Furthermore, by tightening the lock nut 34 against the cap nut 26, the packing 32 is crimped onto the insulating coating 13 of the composite cable 10, and this, combined with the action of the elastic materials, provides excellent waterproofing and slip-off prevention effects. In any case, although it is easy to work with, it can be said to be of great practical benefit as it allows a stable and robust connection to be fixed.

[Brief explanation of the drawing]

Fig. 1 is a semi-cutaway sectional view showing the present invention in an exploded state, Fig. 2 is a side view showing the state where the cable coating is stripped off, Fig. 3 is a sectional view taken along the line X-X in Fig. 2, and Fig. 4
The figure is an enlarged semi-cutaway sectional view showing the assembled state. 10...Composite cable, 11...Wire bundle, 12
... Steel strip, 13 ... Insulating coating, 14 ... Joint body, 18, 34 ... Lock nut, 20, 32 ...
...Packing, 21...Earth terminal, 24,3
1, 33... Slope surface, 26... Bag nut, 36...
...Tsubabe.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A composite cable 10 in which a wire bundle 11 is sequentially coated with a steel strip 12 and an insulating coating 13, and a substantially cylindrical shape that can be fitted onto the composite cable 10, and an outer periphery of the tip. The joint body 14 has a tapered steel strip separating guide slope surface 24 on its surface, and a steel strip pressing guide slope surface 31 corresponding to the slope surface 24 on its inner peripheral surface. Cap nut 26 screwed into 14
and a bag-shaped lock nut 34 which is also screwed and fastened to the bag nut 26, and is inserted between the inwardly projecting flange 36 of the lock nut 34 and the tip of the bag nut 26, The packing 32 is elastically deformable so as to be crimped onto the insulation coating 13 of the composite cable 10, and the insulation coating 13 is peeled off from one end of the composite cable 10, and the wire bundle 11 and the steel strip 12 are removed.
While inserting the joint main body 14 onto the exposed wire bundle 11, the steel strip 1 is removed from the wire bundle 11 by entering the tapered sloped surface 24.
2 and separate the joint body 1 so that it floats.
The steel strip 12 is held under pressure between the pressing guide slope surface 31 of the cap nut 26 that is tightened against the cap nut 26 and the separation guide slope surface 24 of the joint body 14. The diameter of the packing 32 is contracted by tightening the lock nut 34 against the composite cable 1.
1. A wiring connection device for a composite cable, characterized in that it is set to be crimped onto an insulating coating 13 of 0. 2. A utility model registration claim, as set forth in item 1, characterized in that a corner flange 15 that can lock a rotary tool protrudes from the joint body 14, and a ground terminal 21 is screwed to the corner flange 15. Composite cable wiring connection device.