JPH0745311A - Terminal structure of shielded wire - Google Patents

Abstract

PURPOSE:To improve both a shield characteristic and insertion workability of a terminal by peeling off an insulation outer cover from the terminal, coating the core wire exposed with a conductive paint, and exposing the conductor after peeling off the insulation cover of the core wire. CONSTITUTION:An insulation outer cover 15 is peeled off at a specified length 11 from a terminal, and the shield net exposed 14 is stranded as one drain wire 22. A conductive paint 16 is applied over the whole length 11 of the outer circumference of each core wire 13 exposed from the cover-peeled-off base part 15a. The insulation cover 12 of each core wire 13 is then peeled off at a specified length from a terminal 17, and to the conductor exposed 11 a terminal 17 made of conductive metal material is crimped. A terminal 18 is also crimped to the drain wire 22. A connector is insertion connected to the crimped terminals 17, 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shield wire terminal structure having improved shield characteristics and terminal insertion workability.

[0002]

2. Description of the Related Art As shown in FIG. 6 (A), a shielded wire includes core wires 1 and 1 in which a conductor is coated with an insulating coating, and a shield net 2 which covers the outer periphery of the insulating coating of each of the core wires 1 and 1. It is composed of an insulating jacket 3 which covers the outer periphery of the shield net 2.

The terminal treatment of the shield wire for connecting the terminals to the respective core wires of the shield wire is carried out by peeling the insulating jacket 3 from the terminal by a predetermined length and twisting the exposed shield net 2 into one drain wire. Connect the extension electric wire 4, and connect the electric wire 4 with a terminal 5
In addition to crimping, the insulation coating of each core wire 1 and 1 is peeled off to a predetermined length, and the terminals 6 and 6 are crimped to the exposed conductors, respectively. After that, since the shield property is impaired at the exposed portions of the core wires 1 and 1 after the shield net 2 is peeled off, the tube 7 having a conductive member on the inner circumference is
As shown in (B), each core wire 1 and 1 is fitted to the insulating jacket 3 so that the conductive member of the tube 7 is brought into contact with the shield net (drain wire) 2 and each terminal 5 , 6, 6
Is connected to the connector 8. (Actual Kaihei 2-97
(See Japanese Patent No. 766)

In the above-described terminal structure of the shielded wire, the core wires 1 and 1 from which the shield net 2 is stripped off can be shielded by the conductive member of the tube 7, so that the shield characteristics for the adjacent electric wires 9 and 9 are improved.

[0005]

However, in the work of inserting and connecting the terminals 6 and 6 of the core wires 1 and 1 to the connector 8, the core wires 1 and 1 are not constrained by the tube 7, that is, the core wires 1 and 1 are not constrained. As the length l protruding from the tube 7 increases, the flexibility of bending increases, so that workability is improved. However, if the length l protruding increases, the shield characteristic deteriorates.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a shielded wire terminal structure capable of improving both the shield characteristics and the workability of inserting terminals. Is.

[0007]

In order to achieve the above object, the present invention provides a core wire in which a conductor is coated with an insulating coating, a shield net covering the outer circumference of the insulating coating of the core wire, and an outer circumference of the shield net. In a shielded wire consisting of an insulating jacket for covering, the insulating jacket is peeled from the terminal for a predetermined length, and conductive coating is applied to the outer peripheral surface of the exposed insulating coating of the core wire, and the insulating coating of the core wire is terminated. The present invention provides a shield wire terminal structure in which a conductor is exposed by stripping a predetermined length from the conductor, and a terminal is crimped to the conductor.

The shield net stripped from the insulating jacket is twisted to the drain wire, and the ground terminal is crimped to the drain wire. Alternatively, the shield net may be separated without twisting the drain wire, and instead, a conductive clamp may be attached to an insulating coating coated with conductive paint, and the conductive clamp may be fixed to the vehicle body and grounded.

Further, in order to improve the fixing force of the crimp terminal to the core wire, an insulating tape or an insulating tube is wrapped around the insulation coating of the core wire coated with the conductive paint, and the terminal is crimped to the conductor exposed from the core wire. The insulating barrel may be crimped onto the insulating tape or insulating tube.

[0010]

According to the present invention, since the insulating jacket of the shielded wire is peeled off and the conductive coating is applied to the outer periphery of the exposed core wire, the peeling length of the insulating jacket, that is, the core wire Even if the exposed length becomes long, the conductive layer (shield layer) made of the conductive coating is formed over the entire length of the outer circumference of the exposed insulating coating of the core wire, so that the shield characteristic is significantly improved. Further, since the exposed length of the core wire can be increased, the degree of freedom in bending is increased, so that the workability of inserting the terminal crimped onto the core wire into the connector can be improved.

[0011]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. As shown in FIGS. 1 (A) and 1 (B) and FIG. 2, the shielded wire 10 includes conductors 11 and 11 with insulating coatings 12 and 12.
(See FIG. 1B) The core wires 13 and 13 covered with the core wires 13, the shield nets 14 that cover the outer peripheries of the insulating coatings 12 and 12 of the core wires 13 and 13, and the insulating jacket 15 that covers the perimeter of the shield net 14. It consists of and.

The insulating jacket 15 has a predetermined length l from the end.
The shield net 14 that has been peeled off at 1 and exposed is twisted as one drain wire 22.

As shown in FIGS. 1A and 1B, a conductive paint 16 is applied over the entire length l1 of the outer periphery of each core wire 13 exposed from the stripped root portion 15a of the insulating jacket 15. The conductive paint 16 may be applied by brush coating, spray spraying, or so-called dobbing, which is soaking in the conductive coating liquid. The conductive paint 16 is dried, for example, at room temperature for about 12 hours or in a drying chamber at about 80 ° C. for about 20 minutes.

After that, as shown in FIG. 3A, the insulation coating 12 of each core wire 13 is peeled from the end with a predetermined length l2, and the exposed conductor 11 is provided with a terminal 17 made of a conductive metal material. Crimp. Further, as shown in FIG. 3B, the terminal 18 is also crimped onto the drain wire 22. The terminals 17 and 18 thus crimped are connected to the connector 8 (see FIG. 6).
(See (B)).

When the shielded wire 10 has the above structure, even if the stripping length l1 of the insulating jacket 15 is increased and the exposed length of the core wire 13 is increased, the exposed outer circumference of the insulating coating 12 of the core wire 13 is reduced. Since the conductive layer (shield layer) is formed by the conductive coating material 16 over the entire length, the shield characteristics are not impaired.

Further, since the exposed length of the core wire 13 can be increased, the degree of freedom of bending is increased, and the workability of inserting the terminal 17 into the connector is also improved. Further, since the conductive paint 16 is simply applied to the outer circumference of the core wire 13, the applying work can be easily performed and the cost is low.

FIGS. 4A and 4B show a second embodiment, in which an insulating tape or an insulating tube 19 is provided on the outer periphery of the conductive paint 16 of the insulating coating 12 in which the conductor 11 of the core wire 13 is exposed.
And the terminal 17 is crimped to the conductor 11 and the insulating coating barrel 17a of the terminal 17 is crimped to the tube 19. As a result, the terminal 1 for the core wire 13
The fixing force of 7 can be improved.

FIG. 5 shows a third embodiment, in which the insulating jacket 1 is used.
The shield net 14 is completely cut off from the root portion 15a of No. 5, and the drain net is not provided by twisting the shield net as in the first embodiment. Instead of providing the drain wire,
A band or tape-type conductive clamp 20 is wound around and attached to the outer periphery of the conductive coating 16 of the insulating coating 12 of the core wire 13, and the conductive clamp 20 is fixed to the body panel 21 of the automobile equipped with the connector 8 with the clip portion 20a. , Grounded.

[0019]

As is apparent from the above description, since the shield wire end structure of the present invention is coated with the conductive paint on the outer periphery of the core wire with the shield net stripped, the stripping length of the insulation jacket is reduced. In other words, even if the exposed length of the core wire becomes long, the conductive layer (shield layer) of conductive paint is formed over the entire length of the outer circumference of the insulating coating where the core wire is exposed, so the shield characteristics should be significantly improved. You can In addition, since the exposed length of the core wire can be increased, the degree of freedom in bending is increased, so that the workability of inserting the terminal connected to the core wire terminal into the connector can be improved.

[Brief description of drawings]

FIG. 1A is a side view of a shield wire coated with a conductive paint, and FIG. 1B is an enlarged cross-sectional view of a core wire.

FIG. 2 is a side view of a shielded wire whose insulation jacket is peeled off.

FIG. 3A is a cross-sectional view of a core wire in which terminals are crimped,
(B) is a cross-sectional view of a drain wire having a terminal crimped thereto.

4A is a cross-sectional view of a core wire to which the terminal of the second embodiment is crimped, and FIG. 4B is a perspective view of FIG.

FIG. 5 is a sectional view of a core wire clamp according to a third embodiment.

FIG. 6A is a perspective view of a conventional shielded wire, and FIG.
[Fig. 4] is a perspective view in which the terminal of (A) is inserted and connected to a connector.

[Explanation of symbols]

 10 shield wire 11 conductor 12 insulation coating 13 core wire 14 shield net 15 insulating jacket 15a root 16 conductive paint 17, 18 terminal 19 insulating tube 20 conductive clamp 22 drain wire

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication H01R 9/05 Z 6901-5E

Claims (4)

[Claims] 1. A shielded wire comprising a core wire having an insulation coating of a conductor, a shield net covering the outer circumference of the insulation coating of the core wire, and an insulation jacket covering the outer circumference of the shield mesh, wherein the insulation jacket is provided from a terminal. Peeled for a predetermined length, the conductive coating is applied to the outer peripheral surface of the exposed insulation coating of the core wire, the insulation coating of the core wire is peeled for a predetermined length from the terminal to expose the conductor, and the conductor is connected to the terminal. The terminal structure of the shielded wire that is crimped. 2. The terminal structure of the shielded wire according to claim 1, wherein the shield net stripped from the insulating jacket is twisted around the drain wire, and the ground terminal is crimped to the drain wire. 3. A structure in which an insulating tape or an insulating tube is wound around an insulating coating of a core wire coated with the conductive paint, and an insulating barrel of a terminal crimped to a conductor exposed from the core wire is crimped to the insulating tape or insulating tube. The shield wire terminal structure according to any one of the preceding claims. 4. The structure according to claim 1, wherein a conductive clamp is attached to the insulating coating of the core wire coated with the conductive paint, and the conductive clamp is grounded and fixed to the body. Shield wire terminal structure.