JPH08340615A - Ground connection structure of shield wire - Google Patents

Abstract

PURPOSE: To automate peeling of an insulation resin cover and an insulation resin sheath at the outer periphery of the conductor of a shield wire, contact bonding of the conductor to a terminal, and the connection between a drain wire for grounding and the shield wire by a machine. CONSTITUTION: A plurality of shield wires 10, where the outer periphery of one conductor 20 is successively covered with an insulation resin cover 21, a metal foil 22 for shield or a metal mesh for shield, and an insulation resin sheath 23, are connected to the ground via one a drain wire 12. Then, the insulation resin sheath of each shield wire is peeled off for exposing metal foils for shield or metal meshes for shield and an exposed part F of the metal foils for shield or the metal meshes for shield is clamped and contact-bonded in one piece by barrels 13a, 13a of a contact bonding terminal 13 whose one terminal is connected to a drain wire.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shield wire ground connection structure, and more particularly to an automatic connection between a ground drain wire and a shield wire.

[0002]

2. Description of the Related Art Conventionally, a shielded wire in which the outer peripheral surface of the wire is covered with a shielding metal foil has been used as an electric wire used for transmission of electric signals. Usually, this kind of shielded wire
As shown in FIGS. 5 (A) and 5 (B), a plurality of core wires (two core wires 3A in FIG.
3B), the ground drain wire 4 is twisted and bundled, and in this state, the core wire and the drain wire are covered with a shield metal mesh 5, and the outer periphery of the shield metal mesh 5 is further insulated with an insulating resin. It is covered with a sheath 6. The shield wire can obtain a shield effect by which the electric signal flowing through the internal core wire 3 is not affected by external noise or the like by the shield metal mesh 5.

When connecting the above-mentioned shield wire to a unit such as a connector, first, as shown in FIG. 6 (A), the insulating resin sheath 6 and the shield metal mesh 5 of the terminal are peeled off, The core wires 3A and 3B and the drain wire 4 are exposed. Next, as shown in FIG. 6B, each line 3A, 3
Untwist B and 4. After that, as shown in FIG.
After the drain wires 4 are twisted together, as shown in FIG. 6D, the insulating resin coatings 2 and 2 of the core wires 3A and 3B are peeled off to expose the conductor wires 1 and 1. Finally, as shown in FIG. 6 (E), terminals 7 are crimped to the ends of the conductor wires 1 and 1 of the core wires 3A and 3B and the drain wire 4.

[0004]

Since the shielded wire has a plurality of core wires inside the metal mesh 5 for shielding and one drain wire 4 twisted with respect to these core wires, the shield wire is made of resin. It is difficult to peel off the sheath 6 and the metal mesh 5 with an automatic machine. In addition, it is difficult to automatically peel the assembled core wires one by one,
As a result, there is a problem that the ground connection of the shield wire and the terminal connection of the core wire cannot be automated.

The present invention has been made in view of the above problems, and an object thereof is to make it possible to automate the ground connection of the shield wire and the terminal connection of the core wire.

[0006]

In order to achieve the above object, the present invention according to claim 1 is such that the outer periphery of one conductor is covered with an insulating resin, a metal foil for shielding or a metal mesh for shielding, and an insulating resin sheath. Shielded wire sequentially covered with
A plurality of wires are grounded together via a single drain wire, and the insulating resin sheath of each shield wire is peeled off to expose the shield metal foil or shield metal mesh. Provided is a ground connection structure for a shield wire in which an exposed portion of a metal mesh for use is integrally crimped and crimped by a barrel of a crimp terminal whose one end is connected to a drain wire.

In the second aspect, the peeling position of the insulating resin sheath is the middle portion of each shield wire or the tip portion continuous with the terminal portion for connecting terminals. That is, the peeling position of the insulating resin sheath is adjusted according to the number of bundled shielded wires.

[0008]

According to the earth connection structure of the shielded wire according to claim 1 of the present invention, first, the insulating resin sheath and the shield metal foil or the shield metal mesh at the end of the shielded wire are peeled off to insulate the conductor from the conductor. The core wire made of resin is exposed. Then, the insulating resin coating of the core wire is peeled off to expose the conductor wire, and the terminal is crimped. The connection between each of the shield wires and the terminals can be automated by stripping and crimping the terminals because the shield wire is composed of one conductor wire, resin coating, shield metal foil or shield metal mesh and sheath.

On the other hand, since a large number of the plurality of shielded wires are grounded together, the insulating resin sheath of each shielded wire is peeled off to expose the internal metal foil for shielding or the metal mesh for shielding. Then, bundle the exposed portions of the shielding metal foil of each shielded wire, and crimp and crimp the outer circumference of the exposed portions together with the barrel of the crimp terminal to which the drain wire for grounding is connected at one end. Are grounded together via one drain wire. In this manner, the peeling of the insulating resin sheath can be automated, and the work of peeling and exposing the shielded metal foil can be collectively crimped and crimped by the crimp terminal.

As described above, the shielded wire of the present invention has
Each core wire of the book is covered with a metal foil for shielding or a metal mesh for shielding, and since the drain wire is not inserted inside the metal foil for shielding or the metal mesh for shielding, automatic peeling is possible and automation is possible. Can be achieved.

According to the earth connection structure of the shielded wire of the second aspect, the peeling position of the insulating resin sheath of the shielded wire is adjusted by the number of shielded wires bundled. That is, when the number of shielded wires to be bundled is large, the position apart from the connection terminal of the shielded wire that is connected to the terminal is peeled off, and the connection terminal that is crimped to the terminal is bulky and there is a gap between the shielded wires near the terminal. Even if formed, the binding force of the barrel of the crimp terminal is prevented from being weakened, and the grounded state is reliably maintained. On the other hand, when the number of shielded wires to be bundled is small, the tip end portion continuous to the terminal on the connection terminal side is peeled off.

[0012]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. As shown in FIGS. 1 to 3, the shield wire ground connection structure according to the first embodiment of the present invention includes a plurality of ground connection structures.
The shield wires 10 (three in the present embodiment) are bundled into a shielded wire bundle 11, and the shielded wire bundle 11 is integrated through a barrel 13a of a crimp terminal 13 having a drain wire 12 for grounding connected to one end. It is grounded by crimping and crimping. A ground terminal 15 is crimped to the tip of the drain wire 12 so that the ground terminal 15 is connected to a vehicle body panel made of, for example, a metal plate.

As shown in FIG. 2, the shielded wire 10 is formed by successively coating an insulating resin coating 21, a shielding metal foil 22 and an insulating resin sheath 23 on the outer circumference of one conductor 20. That is, the shielded wire 10 of the present invention does not include the drain wire 12 for grounding inside, but the core wire 1
It is formed with only 8 mounted inside. The shielding metal foil 22 is attached over the entire outer circumference of the insulating resin coating 21.

The shielded wire 10 is provided with an exposed portion R by peeling off the insulating resin sheath 23 at a required position in the lengthwise direction, the exposed portions R of a plurality of shielded wires 10 are put together, and the outer periphery thereof is the crimp terminal. The barrel 13a of 13 is integrally crimped and crimped. The peeling position of the insulating resin sheath 23 of the shielded wire 10 is adjusted by the number of shielded wires 10 bundled together. That is, when the number of bundled shielded wires 10 is large, the connection terminal 16 that is crimped to the end of the core wire 18 of the shielded wire 10 is bulky, and the gap between adjacent shielded wires located near the terminals expands. In order to ensure reliable crimping, the intermediate portion apart from the connection terminal 16 is peeled off. On the other hand, when the number of the shielded wires 10 to be bundled is small, the tip portion continuous to the terminal portion on the connection terminal 16 side or the vicinity of the tip portion is peeled off.

The crimp terminal 13 is provided at one end thereof with the barrel 13a for integrally crimping and crimping the outer periphery of the exposed portion R of the shielded metal foil 22 of the bundled shielded wire 10 and at the other end thereof. A barrel 13b for crimping and crimping the drain wire 12 is provided.

Next, the ground connection process of the shielded wire 10 will be described. First, as shown in FIG. 3A, the insulating resin sheath 23 and the shield metal foil 22 at the end of the shielded wire 10 are peeled off to a desired size to expose the inner core wire 18. Next, as shown in FIG. 3B, the insulating resin coating 21 on the tip of the exposed core wire 18 is peeled off to expose the conductor wire 20.

Then, as shown in FIG.
The insulating resin sheath 23 of the shielded wire 10 is peeled off at a position spaced apart from the peeling position of (A) to expose the internal metal foil 22 for shielding. The peeling position of the insulating resin sheath 23 is adjusted by the number of the shielded wires 10 to be bundled as described above. Then, as shown in FIG. 3D, the crimp terminal 16 is crimped onto the conductor wire 20 exposed from the end of the core wire 18 of the shield wire 10.

Then, as shown in FIG. 3E, the exposed portions R of the shield metal foil 22 of each shield wire 10 are bundled,
The outer periphery of the exposed portion R is integrally crimped and crimped by a barrel 13a provided at the other end of the crimp terminal 13, which is crimped to one end of the drain wire 12. When mounted on a vehicle, the ground terminal 15 crimped to the tip of the drain wire 12 is connected to the vehicle body panel made of a metal plate, and all the shielded wires 10 are grounded.

As described above, since the shielded wire 10 has only one core wire 18 mounted therein and the drain wire is not twisted around the core wire as in the conventional case, it is peeled by an automatic machine. Therefore, the terminals 16 can be sequentially crimped and then the terminals 16 can be crimped. Therefore, both the connection between each shield wire and the terminal and the connection between the plurality of shield wires and the drain wire,
It can be automated.

FIG. 4 shows the ground connection structure of the shield wire of the second embodiment. The shield wire 10 'of the second embodiment has the tape-shaped shield metal foil 22 on the outer periphery of the core wire 18.
Instead of, the mesh metal mesh 25 for shielding is covered. In addition, in the second embodiment, one shielded wire 1
The case where the drain wire 12 is connected to 0 ′ through the crimp terminal 13 is shown.

In the shielded wire 10 ', as in the first embodiment, the insulating resin sheath 23 and the shield metal mesh 25 of the end are peeled off to expose the core wire 18, and then the core wire 18 is exposed. The insulating resin coating 21 is peeled off to expose the inner conductor wire 20. After that, the insulating resin sheath 23 at the tip portion continuous with the end portion of the shielded wire 10 'is peeled off to expose the shield metal mesh 25. After that, the exposed shield metal mesh 25 is folded back and overlapped on the outside of the insulating resin sheath 23, and the overlapping portion is caulked and crimped by the barrel 13a of the crimp terminal 13 to ground the shield wire 10 '. are doing.

[0022]

As is apparent from the above description, in the ground structure of the shielded wire according to claim 1 of the present invention, the shielded wire is covered with an insulating resin, a shield metal foil or The metal mesh for shielding and the insulating resin sheath are sequentially covered, and it is formed with only one core wire installed inside without installing the drain wire for grounding inside. Also, it is possible to automatically crimp the connection terminal. Also, unlike the conventional shielded wire, even if it is not formed by attaching a drain wire for grounding to each wire, the exposed parts of the shield metal foil or shield metal mesh of each shield wire are bundled and integrated by crimp terminals. By crimping and crimping on, all the shielded wires can be surely grounded by sharing one drain wire for grounding.

In the ground connection structure for a shielded wire according to a second aspect of the present invention, the stripping position of the insulating resin shield is located at an intermediate portion of the shielded wire or at a tip end portion continuous with the end portion of the shielded wire. Since it is adjusted by the number of shielded wires, even if the number of shielded wires to be bundled is large and the terminal connection terminals are bulky, it is possible to prevent the binding force from the crimp terminals from weakening, and connect all the shielded wires to the ground. The state can be retained reliably.

[Brief description of drawings]

FIG. 1 is a perspective view showing a ground connection structure for a shield wire according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing the structure of the shield wire of FIG.

3 (A), (B), (C), (D), and (E) are side views for explaining a process of connecting a ground to a shield wire.

FIG. 4 is a perspective view showing a ground connection structure of a shield wire according to a second embodiment.

FIG. 5 shows a conventional shielded wire, (A) is a perspective view,
(B) is a sectional view.

6 (A), (B), (C), (D), and (E) are side views for explaining the ground connection process of the shield wire of FIG.

[Explanation of symbols]

 10 Shield Wire 12 Drain Wire 13 Crimp Terminal 20 Conductor Wire 21 Insulating Resin Coating 22 Shield Metal Foil 23 Insulating Resin Sheath 25 Shield Metal Mesh R Exposed Part

Claims (2)

[Claims] 1. A shield wire in which the outer periphery of one conductor wire is sequentially covered with an insulating resin coating, a shielding metal foil or a shielding metal mesh, and an insulating resin sheath is bundled together to form a drain wire. Ground connection.Peel off the insulating resin sheath of each shielded wire to expose the shield metal foil or shield metal mesh, and connect the exposed portion of the shield metal foil or shield metal mesh to the drain wire. The ground connection structure of the shielded wire that is crimped and crimped integrally with the barrel of the crimp terminal that is connected to. 2. The ground connection structure for a shielded wire according to claim 1, wherein the peeling position of the insulating resin sheath is an intermediate portion of each shielded wire or a tip end portion continuous with a terminal portion for connecting terminals.