JPS603565Y2 - Loading coil of communication cable - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a packing coil for a communication cable, which is loaded onto the communication cable for the purpose of reducing surface reduction.

Recently, consideration has been given to accommodating a loading coil within a communication cable.

Conventionally, a loading coil for this type of purpose consists of a plurality of coils with lead wires housed in a tube case in alignment in the axial direction, and the lead wires protrude from both longitudinal ends of the case and are bundled together.

Such a loaded coil is incorporated into a part of a communication cable, and each core wire of the cable and a lead wire are twisted together and connected by soldering or the like.

However, a loaded coil with this structure requires the troublesome work of attaching the lead wires to the coil and bundling them together. In addition, when connecting the lead wires to the communication cable, the core wires must be twisted together, making the connection work troublesome. Since the coil must be inspected for each individual coil, there is a drawback that the inspection is time-consuming.

SUMMARY OF THE INVENTION An object of the present invention is to provide a loading coil for a communication cable, which allows the loading coil to be incorporated into the cable without requiring troublesome work, and which allows easy inspection of the coil.

An embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 shows a loading coil 10 for a communication cable according to the present invention, and this loading coil is arranged in a vertically elongated storage case 12 and accommodated in the storage case. A plurality of disc-shaped coils 14 are aligned in the axial direction.

The storage case 12 is separated from the case body 16 and the lid body 18, and the case body 16 has terminal plates 22 and 22' on both sides thereof, in which a plurality of terminals 20 are arranged in a longitudinal direction. The end wall 16a of the case body is fixed by screws 24.
is fixed to form the side wall of the case body.

The lid body 18 is fixed to the case body by screws (not shown) that pass through screw through holes 18a provided at both ends thereof and are screwed into corresponding screw holes 16b of the case body 16.

Thin coil lead wires 14b are led out from the ends of each coil 14 through windows 14a provided on its circumferential surface, and these coil lead wires are wrapped around the inner ends of the corresponding terminals 20 of the terminal plates 22, 22' at both ends. Connected by soldering.

The outer end of the terminal 20 forms a notched cylindrical terminal portion 20a inclined in one direction on one terminal plate 22, and forms a notched cylindrical terminal portion 20a inclined in one direction on one terminal plate 22.
At 2', a similar notched cylindrical terminal portion 20a is formed which is inclined in the other direction (see FIG. 2).

Note that the storage case 12 may be filled with a compound such as resin.

FIG. 3 shows a state in which a core wire 24 of a communication cable (not shown) is connected to this loading coil 10, and the bare conductor end portion 24a of the core wire 24 is inserted into these notched cylindrical terminal portions 20a. Connected by soldering.

The core wire 24 of one communication cable portion is connected to one terminal plate 22.
The wires 24 of the other communication cable section are connected to the upper terminals 22' in the same orientation as shown in FIG. 3, and the conductors 24 of the other communication cable section are connected to the terminals on the other terminal 22' in the same orientation opposite to that shown in FIG.

These core wires 24 are bundled for each communication cable section and twisted together with other core wires.

According to the present invention, as mentioned above, since the loading coil is connected to the terminals provided on the terminal plates on both sides of the storage case, the cable core wire can be twisted without twisting with the lead wire as in the conventional case. The connection work is easy because it can be connected by direct soldering, etc., and the loading coil can be connected to the coil lead wire with an external lead wire of the same diameter as the cable core wire, or by bundling these external lead wires. It is easy to manufacture because it does not require a coil, and the coils can be easily inspected using terminals after being assembled rather than individually, which has the practical benefit of simplifying the inspection work.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a loaded coil of a communication cable according to the present invention, Fig. 2 is an enlarged front view of a terminal plate, and Fig. 3 is an enlarged perspective view showing the state of connection between the terminal plate and the cable core. . 10...Loading coil, 12...Storage case, 14...Coil, 20...Terminal, 22, 22'...Terminal board , 24...
cable core.

Claims (1)

[Scope of utility model registration request] It consists of a vertically elongated storage case having terminal plates at both ends in which a plurality of terminals are arranged in a longitudinal direction, and a plurality of disc-shaped coils stored in the storage case and aligned in the axial direction, each coil having a lead. A loaded coil for a communication cable, which is connected to an inner end of the terminal via a wire, and an outer end of the terminal is a connection end for connecting a core wire of the communication cable.