JPH0636217U - Hollow wire connection structure - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to crimp and connect a hollow wire to an electrical contact terminal using a crimping jig in the same way as a solid shielded wire, and to crimp an inner conductor and an outer conductor in one process. It is possible to provide a hollow wire connection structure that can be crimped by a robot and can mechanize the crimp connection of the hollow wire. [Structure] A center conductor 4 is inserted and housed inside a hollow insulator 2, and an outer conductor 5 is provided along the outside of the insulator 2 to form a jacket 6.
Hollow wire coated with
A connecting structure of a hollow wire 2 connected to
The core member 16 was inserted therein, and the hollow wire was crimp-connected to the electric contact terminal 7 using a crimping jig.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connection structure between a shield connector and a hollow wire.

[0002]

[Prior art]

 Cables such as antenna cords may use hollow wires to adjust the matching of connecting cable capacitances.

This hollow wire is formed by inserting and accommodating a central conductor inside a hollow insulator, and covering the outer conductor with an outer conductor along the outside of the insulator. When connecting to the electrical contact terminal of the connector, at the connection end of the hollow wire, peel off the outer cover to expose the outer conductor for a predetermined length, pull out the center conductor, and then insulate the insulation coating on this connection end for a predetermined length. In this state, the center conductor was manually connected to the center conductor contact of the electric contact terminal, and the outer conductor was connected to the shield part of the electric contact terminal by soldering.

[0004]

[Problems to be solved by the device]

 However, in the above-described conventional hollow wire connection structure, crimping connection of the hollow wire is impossible because the hollow wire is crushed by the crimping force, and manual soldering is the mainstream. There was a problem that it was efficient and connection workability was poor.

The present invention has been made in view of the above problems, and an object thereof is to make a hollow wire into an electric contact terminal by using a crimping jig like a solid shield wire. It is possible to press-connect to the inner conductor and crimp the inner and outer conductors in a single process, enabling crimping with a robot, and mechanized hollow wire crimping connection. To provide the structure.

[0006]

Means for Solving the Problems To achieve the above object, the present invention provides a housing in which a central conductor is inserted and housed inside a hollow insulator and an outer conductor is provided outside the insulator. A hollow wire connection structure for connecting a hollow wire formed by coating with an electric contact terminal of an electrical connector, in which a core member is inserted into the insulator, and the hollow wire is connected to an electric contact terminal using a crimping jig. It is characterized in that it is crimped to.

The core member is a cylindrical body made of an insulating material, the outer diameter of which is slightly smaller than the inner diameter of the insulator of the hollow wire, and the center conductor insertion hole is formed in the center thereof. Is.

[0008]

[Action]

 As described above, the core member is inserted into the insulator of the hollow wire to prevent the insulator from being crushed by external pressure, so that the hollow wire is crimped in the same manner as a solid shield wire. It is possible to crimp-connect to an electric contact terminal by using, and it is possible to crimp the inner conductor and the outer conductor in one step, enabling crimping by a robot and mechanizing the crimping connection of the hollow wire.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 is a cross-sectional view of a hollow wire connection structure according to an embodiment of the present invention, FIG. 2 is a perspective view of a terminal portion of the hollow wire, and FIG. 3 shows a state in which the hollow wire is connected to an electric contact terminal of an electric connector. Explanatory drawing, FIG. 4 is a front view of the core member, and FIG. 5 is a sectional view taken along the line AA of FIG.

As shown in FIG. 2, the hollow wire 1 has a hollow conductor 2 in which a central conductor 4 covered with an insulating coating 3 is inserted, and an outer conductor 5 is provided outside the insulator 2 to form an outer conductor. It is constructed by covering with a cover 6.

FIG. 3 shows an electric contact terminal 7 of the electric connector to which the hollow wire 1 is connected. The electrical contact terminal 7 includes a shield outer cylinder member 8, and the shield outer cylinder member 8 has an outer conductor crimping portion 10 having a contact holding portion 9, a pair of crimping pieces 10a, and a pair of crimping pieces 11a. The crimping portion 11 is provided, the jig 9 is provided in the contact holding portion 9, and the center conductor contact 13 is provided with the center conductor crimping portion 14 having a pair of crimping pieces 14a. A central conductor contact 13 is housed and held in the shield outer tubular member 8 via an insulator 15.

Further, the core member 16 is shown in FIGS. 4 to 6. The core member 16 is a cylindrical body made of an insulating material, for example, an insulating synthetic resin such as fluorinated resin (Teflon). The outer diameter of the core member 16 is the inner diameter of the insulator 2 of the hollow wire 1. It is made slightly smaller, and the insertion end of the core member 16 has a conical shape. Further, a center conductor insertion hole 17 is formed at the center of the core member 16, and the end portion of the center conductor insertion hole 17 is formed into a scoop-like shape.

At the connection end of the hollow wire 1, as shown in FIG. 2, the outer cover 6 is peeled off to expose the outer conductor 5 by a predetermined length, and the central conductor 4 is pulled out to expose the outer conductor 5. The insulating coating 3 at the connection end is peeled off over a predetermined length.

In this state, the core member 16 is mounted in the hollow wire 1. That is, the central conductor 4 of the hollow wire 1 is inserted into the central conductor insertion hole 17 of the core member 16, and the core member 16 is inserted into the insulator 2 of the hollow wire 1. The insertion of the core member 16 prevents the insulator 2 from being crushed by pressure from the outside.

As described above, the hollow wire 1 having the core member 16 mounted therein is inserted into the electrical contact terminal 7 from a direction perpendicular to the axis, and the crimping piece of the central conductor crimping portion 14 of the central conductor contact 13 is inserted. 14a between the center conductor 4 of the hollow wire 1, the outer conductor crimping portion 10a of the outer conductor crimping portion 10 of the shield outer tubular member 8, the outer conductor 5 of the hollow wire 1 between the crimping piece 11a of the covering holding portion 11, and The outer sheath 6 is inserted into each of them, the anvil 18 and the crimper 19 as a crimping jig for the center conductor contact are inserted into the jig insertion openings 12b and 12a, and the center conductor 4 is crimped with the crimping piece 14a, and the shield Using the anvil 20 and the crimper 21 as a crimping jig for the tubular member, the outer conductor 5 is crimped together with the insulator 2 with the crimping piece 11a, and the jacket 6 is crimped with the crimping piece 19a to form the hollow wire. 1 is an electrical connector It is connected to the electrical contact terminal 7 of the battery.

As described above, by inserting the core member 16 into the insulator 2 of the hollow wire 1 to prevent the insulator 2 from being crushed by the pressure from the outside, the hollow wire 1 is made solid. It is possible to crimp-connect to the electric contact terminal 7 by using a crimping jig in the same manner as the shield wire.

Further, in the above embodiment, when the core member 16 is inserted into the hollow wire 1, the portion of the central conductor 4 where the insulating coating 3 is peeled off for a predetermined length is inserted through the central conductor of the core member 16. The core member 16 was inserted into the hole 2 and then inserted into the insulator 2 of the hollow wire 1. However, as shown in FIG. The core member 16 may be inserted into the core conductor insertion hole 17 and then inserted into the insulator 2 of the hollow wire 1.

Further, as shown in FIG. 8, the core member 16 is formed by forming a plurality of groove portions 22 along the circumferential direction at a predetermined interval in the axial direction on the outer peripheral portion thereof, so that the core member 16 is securely crimped and pulled out. In addition, the shape of the groove portion 22 is made to be the same as the conical portion of the insertion end portion of the core member 16, and the groove member 22 is cut along the line a-a in FIG. You may

Furthermore, by providing the protrusion 23 having a diameter larger than the inner diameter of the insulator 2 of the hollow wire 1 at the rear end portion of the core member 16, the protrusion 23 is inserted when the core member 16 is inserted into the hollow wire 1. Hits the end of the insulator 2, and the core member 16 is inserted to an appropriate position.

[0020]

[Effect of device]

 As described above, according to the present invention, by inserting the core member into the insulator of the hollow wire to prevent the insulator from being crushed by the pressure from the outside, the hollow wire is made into a solid shielded wire. Similarly, it becomes possible to crimp and connect to the electrical contact terminal using a crimping jig, and it is possible to crimp the inner conductor and the outer conductor in one step, enabling crimping by a robot, and mechanizing the crimping connection of hollow wires. can do.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a hollow wire connection structure according to an embodiment of the present invention.

FIG. 2 is a perspective view of a terminal portion of a hollow wire.

FIG. 3 is an explanatory view showing a state in which a hollow wire is connected to an electric contact terminal of an electric connector.

FIG. 4 is a front view of a core member.

FIG. 5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is a rear view of the core member.

FIG. 7 is a sectional view of another embodiment in which a core member is inserted into a hollow wire.

FIG. 8 is a cross-sectional view of another embodiment of the core member.

[Explanation of symbols]

 1 Hollow Wire 2 Insulator 4 Center Conductor 5 Outer Conductor 6 Outer Cover 7 Electrical Contact Terminal 16 Core Member 17 Center Conductor Through Hole

Claims (2)

[Scope of utility model registration request] 1. A hollow wire for connecting a central conductor to an electric contact terminal of an electric connector, wherein a hollow conductor is inserted and accommodated in a central conductor, and an outer conductor is provided outside the insulator and covered with an outer cover. A connection structure of a wire, wherein a core member is inserted into the insulator and the hollow wire is crimp-connected to an electric contact terminal using a crimping jig. 2. The core member is a cylindrical body made of an insulating material, the outer diameter of which is slightly smaller than the inner diameter of the insulator of the hollow wire, and a center conductor insertion hole is formed in the center thereof. The hollow wire connection structure according to claim 1.