JPH0436202Y2 - - Google Patents

Description

[Detailed description of the invention] Field of application of the invention This invention is a grounding connecting part of a cable shielding covering at a terminal part of a cable (hereinafter referred to as the terminal part) or a cable shielding covering at a connecting part of a cable (hereinafter referred to as a connecting part). (hereinafter referred to as a shielding coating) interconnection components.

PRIOR ART Conventional grounding devices for shielding and sheathing of terminal parts include those in which a bare copper wire is wound around the shielding sheath and an external lead wire is soldered thereto. In addition, there is a "cable terminal section" disclosed in Utility Model Publication No. 47-35519 that eliminates the soldering work, and has a grounding conductor on the inner surface of a flexible synthetic resin cylindrical body that is integrally molded with the stress cone. A configuration has been proposed in which the ground wire is buried so as to be integrally exposed and the exposed portion is brought into contact with a clamp that is electrically connected to the shielding sheath, thereby leading out the ground wire.

Problems to be Solved by the Invention Soldering the bare copper wires described above is not an easy method, as it requires cleaning of the soldering surface and the skill of the worker. In addition, the method using a clamp requires molding with a part of the grounding conductor exposed when manufacturing the resin cylindrical body, and also requires the use of a grounding clamp, conductor, and other parts for mutual contact with the shielding coating. Since the number of contacts increases and the number of contact points increases, there is a problem that poor contact is likely to occur.

Similarly, with regard to devices for interconnecting the shielding coverings of the grounding section, methods of soldering bare copper wires or methods of connecting via clamps have been used, but as mentioned above, the same problems as with terminal section processing have been used. It was hot.

The present invention solves these problems of the prior art, and reduces the number of parts for the grounding device for the terminal shielding sheath or the interconnection device for the shielding sheathing at the connection part, and also facilitates the grounding work and interconnection work. The purpose is to improve work efficiency.

Means for Solving Problems That is, the present invention has a conductive elastic drum-shaped body having a central hole into which a cable is inserted and fitted and one slit in the longitudinal direction, and an outer surface of the drum-shaped body. An object of the present invention is to provide an electrical connection part having a shielding coating at a terminal part or a connecting part, and having an external lead-out conductor fixed to the terminal part or the connecting part. In this specification, the tympanic body is the first
As shown in the figure, a slit refers to a structure in which the central part of a cylinder in the axial direction is constricted.
As shown in FIG. 2, it refers to a location between both ends of the drum-shaped body in the circumferential direction.

Embodiment FIG. 1 shows an external view of a conductive elastic drum-shaped body used in the electrical connection part of the present invention, and FIG. 2 shows an A--
A cross-sectional view at A′ is shown.

The conductive elastic drum-shaped body 2 has a central hole 22 into which the cable is inserted and fitted, and a plurality of holes in the longitudinal direction in order to easily process the drum-shaped body 2 into a drum-shaped shape and to obtain elasticity for fitting the cable. A slit 23 is provided at one location in the longitudinal direction to accommodate variations and variations in cable diameter. The external lead-out conductor 1 is fixed to the outer surface of the drum-shaped body 2 by soldering or the like.

If the drum-shaped body is made of an elastic material, the effect of fitting the cable into it will be increased.
It can be easily manufactured by soldering the conductive wire after plating if necessary.

FIG. 3 shows a sectional view of a main part of the electrical connection component of the present invention used in a cable terminal section.

External drawer conductor 1 extraction hole 7 and drum-shaped body 2
The cable insertion hole 9 of the prefabricated terminal processing member 3 made of an insulator is provided with a recess 8 for positioning the cable. Insert through the insertion hole 9. As a result, the electrical connection component of the present invention for use in a cable terminal section is produced. Next, a cable conductor (not shown), a cable insulator coating 6,
By pushing the shielding sheath 5 and the cable 4 exposed in stages through the cable insertion hole 9, the shielding sheath 5 comes into contact with the drum-shaped body 2. Furthermore, the grounding process is completed by electrically connecting the external lead-out conductor 1 to the grounding part.

Next, other embodiments of the electrical connection component of the present invention used in a cable connection section will be described with reference to FIGS. 4, 5, and 7.

FIG. 4 shows a sectional view of a main part of the electrical connection component of the present invention used in a cable connection part, and FIGS. 5 and 6 are sectional views showing steps in cable connection processing. Prefabricated type in which cable insertion holes 11, 11' at both ends are provided with extraction holes 7, 7' for external lead-out conductors 1, 1', and recesses 8, 8' for positioning drum-shaped bodies 2, 2'. Connecting members 2 and 2' are built into the connection processing member 10 in the same manner as in the case of the prefabricated end processing member, and the lead-out conductors 1 and 1' are electrically connected to each other. As a result, a prefabricated connection processing member incorporating the connection component of the present invention can be prepared. Next, the cable conductor 12, the cable insulator sheath 6, the shielding sheath 5, and the exposed cable 4 are inserted into the cable insertion hole 11 through the cable insertion hole 11, passed through the prefabricated connection processing member 10, and then passed through the cable insertion hole 11' at the other end. (See Figure 5). Furthermore, the cable conductors 12 and 12' of the cable 4 and the cable 4' are conductor-connected using a coupling member 13, etc., and the necessary insulation treatment is performed (see Figure 6). 10 is moved to the center of the cable connection, the shielding sheathing 5,
5' comes into contact with the drums 2, 2', and the interconnection process of the shielding sheathing of the connection is completed.

FIG. 7 is a sectional view of a main part of the electrical connection component of the present invention, which incorporates a conductive elastic drum-shaped body having a threaded external lead-out conductor. Since the external drawer conductor 1 fixed to the drum-shaped body 2 is threaded, the drum-shaped body 2 can be fixed to the above-mentioned member 16 using the washer 14 and the nut 15. When inserting the cable into the above-mentioned member containing the drum-shaped body, it not only prevents the drum-shaped body from shifting, but also provides a grounding wire of the desired length, making it easy to secure it with screws. It is versatile and convenient because it can be connected to. Furthermore, the end portion of the external lead-out conductor that is fixed to the drum-shaped body can use a screw processed into a trapezoidal structure that widens at the end, so the fixed area is larger compared to simply using a conductor as the external lead-out conductor. Easy to solder.

In this example, a plurality of grooves were provided in the drum-shaped body in order to easily process it into a drum-shaped body and to obtain elasticity for fitting the cable. A hole, cutout, etc. may be provided in a part of the body, and furthermore, if an elastic conductive plastic resin is used, a drum-shaped body can be formed without providing a groove, hole, cutout, etc.

Effects of the invention As described above, the electrical connection component of the cable shielding coating at the cable terminal or connection part of the present invention is used, which has a built-in conductive elastic drum-like body that is vertically symmetrical and is independent of the cable insertion direction. As a result, it is possible to handle many types of cables with different diameters, and simply by inserting a cable with an exposed shielding sheath into the electrical connection part of the cable shielding sheath of the present invention, it is possible to easily and reliably ground the cable shielding sheath or connect it to each other. The workability of the connection process can be greatly improved, and contact failures can be avoided. Also, by using the number of parts and the drum-shaped body, the contact area with the cable shield can be increased while maintaining the spring strength. .

It is possible to secure welding space for the external lead-out conductor.

Since the center is concave, welding can be easily positioned in the center. In addition, the connection point becomes stable.

The cable sheath will not be damaged when moving the cable.

It can be easily made from hoop material by press processing, and has good workability.

Further, by providing a slit, the diameter of the drum-shaped body can be increased as necessary, so that it can be applied to cables with a wide range of diameters.

[Brief explanation of the drawing]

Figure 1 is an external view of a conductive elastic drum-shaped body used in the electrical connection part of the present invention, and Figure 2 is an A--A in Figure 1.
A sectional view at A', and Figure 3 is a sectional view of the main parts of the electrical connection component of the present invention used in the cable terminal section.
Figure 4 is a cross-sectional view of the main part of the electrical connection component of the present invention used in the cable connection part, Figures 5 and 6 are cross-sectional views showing the steps in the cable connection process, and Figure 7 is the thread cutting process. 1A and 1B are cross-sectional views of essential parts of an electrical connection component of the present invention incorporating a conductive elastic drum-shaped body having an external lead-out conductor. In the figure, 1... conductor for external extraction, 2... drum-shaped body, 21... groove, 22... central hole, 23... slit, 4... cable, 5... cable shielding coating, respectively.

Claims (1)

[Claims for Utility Model Registration] (1) A prefabricated processing member having a cable insertion hole in the center has a recess that is coaxial with the cable insertion hole and is slightly larger than the cable insertion hole, and a conductor for external extraction is taken out in the recess. A conductive elastic drum-shaped body having a constricted body in the longitudinal direction has a central hole in which a cable is inserted and fitted in the recessed part, and one slit in the longitudinal direction. An electrical connection component of a cable shielding coating at a cable terminal or connection portion, in which a component having an external lead-out conductor fixed to the outer surface of the body is inserted and installed so that the central hole is coaxial with the cable insertion hole. . (2) The electrical connection component according to claim 1, wherein the external drawer conductor is threaded.