JPH0357029Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a shielded cable incorporating a noise filter element and having a pin plug type connector attached thereto.

[Conventional technology]

Shielded cables with pin-plug connectors for signal transmission used in video game consoles, etc.
Conventionally, the connection between the connector and the cable conductor was
A part of the connector is embedded with a soft sealing material along with a part of the cable to form the connector knob, and a ferrite bead core is passed through the cable to shield noise, and the core and cable are covered with a sealing material. It was buried as one piece.

[Problem that the invention attempts to solve]

Conventional cables have small connector tabs, so it is not easy to attach or detach the connector, and the connection between the connector and the cable is likely to break due to bending, rotation, or tension of the cable, resulting in poor cable durability. There was a problem.

[Means for solving problems]

The shielded cable with a pin plug type connector according to the present invention has a plug pin and a cylindrical grounding contact fitting with a tongue piece attached to the back side of a disc-shaped insulator that coaxially holds the outer surface of the tongue piece and a pin corresponding to the tongue piece. a connecting base part in which the outer periphery is exposed at the top and bottom, respectively, and a tongue piece and a pin are embedded therein; The two arms are integrally provided,
A pin-plug type connector is passed through the bead core, and a shielded cable is wound once each with the ends of the inner conductor and outer conductor passed through the center hole of the core, and the arms of the connector are passed through the center hole of the core. The inner conductor and the terminal end of the outer conductor of the cable are connected to the pin circumferential surface and the tongue surface of the connecting base, respectively, and the back of the insulator and the core are integrated with the first sealing material. A part of the contact fitting, an insulator, and a part of the first sealing material cable are embedded in a second sealing material.

〔Example〕

The details of one embodiment of the present invention will be explained with reference to the drawings.

FIG. 1 is an external view showing the main parts of a shielded cable according to the present invention, and FIG. 2 is a longitudinal sectional side view thereof.

In Fig. 2, 1 is a plug pin, which is a round bar conductor with spherical surfaces at both ends. Reference numeral 2 designates a grounding contact fitting, which is a cylindrical metal fitting provided with a tongue piece 21 bent inward in an angular shape as shown in FIG.

3 is an insulator that is molded integrally with the plug pin 1 and the contact fitting 2 arranged coaxially to form the pin-plug type connector 4 shown in FIG. 4;
A square bar-shaped connection base part in which the plug pin 1 and the tongue piece 21 are buried in the back (front part in the figure) of the disc part 31 in which the inclined surface part (base) of the tongue piece 21 of the contact fitting 2 shown in the figure is buried. 32 and two arm portions 33 longer than the base portion 32 are integrally provided. Base part 32
As shown in FIG. 5 by inverting FIG. 4, the outer surface of the tongue piece 21 is exposed, and the base part 3
2, the plug pin 1 is exposed in a semicylindrical shape. The arm portion 33 extends along the side surface of the base portion 32, and has a tapered outer surface having a truncated conical shape and an inclined inner surface. (Although it is difficult to see in Fig. 5, there is a wedge-shaped gap between the upper side of the platform 32 and the inner surface of the arm 33, allowing the entire arm 33 to bend inward.) In Fig. 6 5 is a shielded cable,
6 is a ferrite bead core passed through the cable 5. At the end of the cable 5, the insulation coating is peeled off to form an inner conductor (insulated core wire) 7 and an outer conductor (a conductor made of stranded braided wire and covered with an insulated tube).
The core 6 is divided into 8 parts, each of which is wound once through the central hole of the core 6, as shown in FIG.

Cable 5 and connector 4 with core 6 attached
As shown in FIG. 6, the arm portion 33 is inserted into the center hole of the core 6, the inner conductor 7 is connected to the plug pin 1 of the connection base portion 32, and the outer conductor 8 is connected to the outer surface of the tongue piece 21 by soldering. Connected.

Reference numeral 9 denotes a first sealing material (high-strength hard resin such as PP resin), which embeds the core 6 and the back of the insulating disc portion 31 of the connector 4 as shown by the chain line in FIG. are doing.

10 is a second sealing material (such as PVC resin, an elastic soft resin equivalent to the insulation coating of the cable 5);
A portion of the contact fitting 2 and a portion of the cable 5 are integrally buried above the first sealing material 9.

[Effect of idea]

Since the shielded cable has the structure described above, it has the following advantages.

Since the inner and outer conductors of the cable are separated and wrapped once around the core, the swell caused by winding is smaller than when the cable is wrapped as is. Therefore, if the finished dimensions are the same, it is possible to use a larger core than before. can be used, and the noise shielding properties are improved. Also, the core can be securely attached to the cable.

Since the core is supported by the arms of the connector,
Connection work by soldering the conductor and connector is easy.

Since the connection part of the conductor is filled with the first encapsulant and the connector and core are made into a solid integral structure and covered with the second encapsulant, the connector knob is larger than before, and therefore, it is easier to attach and detach the connector than before. It is easier, and the strength of the cable in rotation, tension, and bending is higher than before, and the frequency of these occurrences is reduced, resulting in excellent cable durability.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view showing an embodiment of the present invention. FIG. 2 is a longitudinal sectional side view showing one embodiment of the present invention. FIG. 3 is an external perspective view showing an example of a grounding contact fitting in a pin-plug connector. FIG. 4 is an external perspective view of the pin-plug type connector used in the present invention. FIG. 5 is an external perspective view of FIG. 4 upside down. FIG. 6 is a diagram illustrating a combination of a core, a cable, and a connector. 1...Plug pin, 2...Grounding contact fitting, 2
DESCRIPTION OF SYMBOLS 1... Tongue piece, 3... Insulator, 4... Pin plug type connector, 5... Shield cable, 6... Ferrite bead core, 7... Inner conductor, 8... Outer conductor, 9... First Sealing material, 10... Second sealing material, 31... Disc part, 32... Connection base part, 33...
...Arm.

Claims (1)

[Scope of utility model registration request] The connector uses a pin plug type connector, a magnetic bead core, and a shielded cable. a connecting base part in which the tongue piece of the contact fitting and the plug pin are embedded, with the peripheral surfaces of the corresponding plug pins exposed upward and downward, and a connecting base part extending along the side surface of the base part and longer than the base part; Two arm portions each having a truncated conical outer surface are integrally provided, and the core and the sealed cable are connected to each other by passing the core through the cable to connect the ends of the inner conductor and outer conductor of the shielded cable. The inner conductor and the outer conductor are connected to the plug pins of the connecting base by inserting the arms of the connector into the center hole of the core and winding them one or more times through the center hole of the core. The connector is connected to the exposed circumferential surface and the outer surface of the tongue, the back of the insulator and the core of the connector are integrally buried in a first sealing material, and the connector is further shielded from the contact fitting by a second sealing material. A shielded cable with a pin plug type connector that is embedded with the cable.