JPH0127396Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a cable connection part useful for shortening the axial length of a cable straight connection part.

[Technical background of the invention and its problems] Generally, as a prefabricated straight cable connection part, as shown in FIG. A device in which a conductor connecting pipe 4 to which cable conductors 3, 3 are connected is located is known. However, in such a cable straight connection part, as shown in FIG. Connect the pre-molded stress cones 6, 6, intermediate connection tube 1, etc. to one cable 7.
You need to pull it to your side. Therefore, in the case of such a straight cable connection, the length of stripping off the cable sheaths 8, 8 and cable shielding layers 9, 9 of only one cable 7 becomes longer than necessary, and as a result, after the assembly is completed, The sealing process dimension of the connection part of one cable 7 becomes long, which in turn increases the total length of the cable connection part, is not favorable in terms of waterproofness, and furthermore, the connection work itself becomes complicated.

Therefore, in order to shorten the total length of the cable connection part, as shown in FIG. Attach one end side of each of the receptacles 12, 12 formed by bundling them into a cylindrical shape with 11, 11, and connect the cable conductors 3, 3 to these receptacles 12, 12 from the other end side.
A so-called slip-on cable direct section has been developed in which plugs 13, 13 fixed to the ends of the cable are connected in a plug-in manner. However, in the case of such a straight cable connection, an extra axial dimension l of the conductor connection pipe 4' is required, which increases the overall length of the cable connection and complicates the structure.
Furthermore, there was the problem of high costs.

[Purpose of the invention] The present invention has been made to solve the above-mentioned difficulties, and is intended to provide a cable connection part that can shorten the overall length of the cable connection part.

[Summary of the invention] In this invention, the conductor connection pipe provided in the center of the internal shielding fitting constituting the intermediate connection tube has a large number of fingers having protrusions on the outer surface of the center part, and these fingers are arranged in a cylindrical shape. and a spring disposed around the outer periphery of both ends of the plurality of fingers so as to bundle the plurality of fingers; The above object is achieved by clamping it with a ring screwed onto the inner periphery.

[Embodiment of the invention] An embodiment of the invention will be described below with reference to the drawings.

In the following drawings, parts common to those in FIGS. 1 to 3 are designated by the same reference numerals.

In FIG. 4, the intermediate connecting cylinder 1 includes a cylindrical insulation reinforcing layer 14 having receiving surfaces for pre-molded stress cones 6, 6 at both ends, and a cylindrical internal shielding layer integrally molded on the inner periphery of the insulation reinforcing layer 14. It is composed of 2.

On the inner periphery of the inner shielding layer 2 at approximately the center thereof, there are a large number of fingers 16 having protrusions 15 on the outer surface of the center portion as shown in FIG. A conductor connecting tube 4'' is disposed on the outer periphery of both ends thereof, and is constituted by springs 17, 17 surrounding a large number of fingers 16 so as to bundle them.

The conductor connecting pipe 4'' has one side wall of the protrusion 15 of each finger 16 in contact with a stopper 18 formed approximately at the center of the internal shielding layer and consisting of, for example, a step wall.
Internal shielding layer 2 on the other side wall 2 Ring 1 screwed on the inner periphery
9 is clamped to the inner periphery of the inner shielding layer 2. In addition, to fix the conductor connecting pipe 4″,
Without being limited to the above embodiments, for example, the inner shielding layer 2
Two rings may be screwed onto the inner periphery, and the protrusion 15 of the finger 16 may be sandwiched between these rings.

On the other hand, a pair of cables 7, 7 to be connected are subjected to a step stripping process, bullet-shaped plugs 13, 13 are crimped to the exposed conductors 3, 3, respectively, and similarly exposed cable insulators 5, 5 are crimped. Pre-molded stress cones 6, 6 are respectively attached to the outer periphery.

These pair of cable terminals are inserted from both sides of the intermediate connection tube 1, and the plugs 13, 13 are thereby plug-ined into the conductor connection tube 4'', and the tips of the pre-molded stress cones 6, 6 are inserted. The sections are respectively brought into contact with the receiving surfaces of the reinforcing material 14, thereby completing the cable connection according to the invention.

In the figure, 20 is a cable protection fitting, 21 is a stopper, 22 is a pusher, 23 is an insulator pusher, 24 is a linear spring, 25 is a conductive wire,
26 is a tape processing section, 27 is an auxiliary metal fitting, 28 is an insulating tube provided when forming an insulating connection section, 2
9 is a cable outer semiconducting layer, 30 is a bolt, 31
indicates a protective cover.

[Effects of the invention] In the above-mentioned invention, the conductor connecting pipe has a plurality of fingers having protrusions on the outer surface of the central part,
These fingers are arranged in a cylindrical shape, and the cable conductor can be plug-in connected by arranging the fingers around the outer periphery of each end with springs arranged around the outer periphery of the fingers, as shown in Figure 1. Compared to the traditional cable connections shown,
Since there is no need to remove any excess cable sheath or cable shielding layer, the total length of the cable connection can be significantly shortened. Also, compared to the plug-in type cable connection shown in FIG. 3, the size can be reduced by the amount equivalent to one finger.

Furthermore, compared to the conductor connection tube shown in Fig. 3, the present invention requires only one finger portion, so the structure is simpler, the performance is improved accordingly, and it is also economically advantageous. .

[Brief explanation of the drawing]

1 and 3 are half-cut sectional views of a conventional cable connection section, FIG. 2 is an explanatory diagram showing how the cable sheath, etc. is removed when forming the cable connection section in FIG. 1, and FIG. 4 5 is a half-cut sectional view of a cable connecting portion of the present invention, FIG. 5A is a longitudinal sectional view of a conductor connecting pipe according to the present invention, and FIG. 5B is a side view thereof. 1... Intermediate connection tube, 2, 2'... Internal shielding layer,
3...Cable conductor, 4,4',4''...Conductor connecting tube, 6...Pre-molded stress cone, 7...
Cable, 15...protrusion, 16...finger,
17...Spring.

Claims (1)

[Scope of utility model registration request] In the cable connection part, in which a conductor connection tube to which a pair of cable conductors is connected is located in the center of a cylindrical internal shielding layer constituting an intermediate connection tube, the conductor connection tube has a protrusion on the outer surface of the center portion. It is composed of a large number of fingers, these fingers are arranged in a cylindrical shape, and a spring is provided around the outer periphery of both ends of the plurality of fingers so as to bundle these fingers, and the protrusion of each of the fingers is arranged in a cylindrical shape. 1. A cable connection section characterized in that the cable connection section is held between a stopper formed on an inner periphery of an approximately central portion of an inner shielding layer and a ring screwed onto the inner periphery of the inner shielding layer.