JP5979427B2 - conductor - Google Patents

Description

  The present invention relates to a conductor.

Conventionally, a technique for electrical connection via a flexible conductor is known.
In the connector device of Patent Document 1, the electric wire side terminal fitting provided on the electric wire side connector and connected to the electric wire end is electrically connected to the equipment side terminal fitting on the equipment side provided in the equipment side connector. The device-side terminal fitting is configured by connecting a fixed terminal fitting and a displacement allowable terminal with a flexible conductor.

JP 2011-165428 A

  By the way, in Patent Document 1, the flexible conductor is arranged in the device-side connector. For example, when the flexible conductor is arranged in the electric wire-side connector and connected to the terminal portion of the electric wire, it is acceptable. If the flexible conductor and the electric wire are connected using a relay member such as a terminal, there is a problem that the manufacturing cost is increased by the amount of the relay member.

  The present invention has been completed based on the above situation, and an object thereof is to provide a conductor capable of reducing the manufacturing cost.

The conductor of the present invention has one end side of a tubular electric wire connecting portion through which the conductor portion exposed from the insulating layer at the end portion of the electric wire and an electric wire whose conductor portion is covered with an insulating layer are inserted. And the other end side is connected to a terminal accommodated in a connector, and the flexible conductive member is a braided wire formed by braiding a metal wire, and the terminal is The flexible conductive member has a crimped piece, and the other end side of the flexible conductive member is crimped so as to be wound from the outside by the crimping piece, and the wire connecting portion and the conductor portion are electrically connected to each other. It is connected.

  In this way, the conductor part of the electric wire and the flexible conductive member can be connected without interposing the relay member between the electric wire and the flexible conductive member. It is possible to reduce the number of parts by the amount not included. Therefore, the manufacturing cost can be reduced.

It is preferable to have the following configuration as an embodiment of the above configuration.
- the wire connecting portion is electrically connected pressed against the conductor portion.
If it does in this way, when connecting an electric wire connection part to a conductor part, it becomes possible for a braided wire to break | disconnect the oxide film of a conductor part.

-The electric wire connection part and the conductor part are electrically connected in the state where the electric wire connection part and the conductor part were crimped.
If it does in this way, it will become possible to connect electrically the conductor part of an electric wire and the electric wire connection part of a flexible conductive member firmly with a simple structure.

-The electric wire connection part and the said conductor part are electrically connected in the state in which the said electric wire connection part and the said conductor part were welded.
In this way, a separate member for crimping is not required as compared with the case of crimping the wire connecting portion, and the number of components can be reduced.

The welded state is an ultrasonic welded state or a resistance welded state .

The conductor part is made of aluminum or an aluminum alloy.
In this way, when the conductor is made of aluminum or an aluminum alloy and an oxide film is likely to be formed on the surface, the oxide film can be broken by the braided wire.

  According to the present invention, the manufacturing cost of the conductor can be reduced.

The top view which shows the conductor of Embodiment 1. The perspective view which shows the terminal part of an electric wire, and the one end side of a flexible conductive member The perspective view which shows the state by which the flexible electrically-conductive member was penetrated to the conductor part, and a crimping member The top view which shows the conductor of Embodiment 2.

<Embodiment 1>
The first embodiment will be described below with reference to FIGS.
The conductor 10 of the present embodiment is a connector CN (shown schematically by a one-dot chain line in FIG. 1), which is arranged in a conductive path from a power source such as a battery to a load in a vehicle such as an automobile. )).

  As shown in FIG. 1, the conductor 10 includes an electric wire 11, a flexible flexible conductive member 14 having a cylindrical shape, and a left end side (one end side) of the flexible conductive member 14 covering the conductor portion 12. And a crimping member 17 that crimps and crimps. A terminal 18 is connected to the right end side (the other end side) of the flexible conductive member 14.

The electric wire 11 is a covered electric wire in which the periphery of the conductor portion 12 is covered with an insulating layer 13 (insulating coating), and the insulating layer 13 is peeled off at the end portion of the electric wire 11 to expose the conductor portion 12.
The conductor portion 12 is a stranded wire in which aluminum or aluminum alloy strands are twisted together. In addition, not only a strand wire but a single core wire which consists of one core wire can also be used, for example.

  The flexible conductive member 14 is formed by forming the entire braided wire in which a fine metal wire is knitted into a mesh shape, and has a thickness that is slightly thick enough to transmit the driving power of the vehicle. It has the flexibility which can be changed. As the braided wire, for example, a braided bare copper wire, an oxygen-free annealed copper wire, and a tinned annealed copper wire can be used. Moreover, it is not restricted to a copper wire, You may use what knitted the copper alloy wire, the aluminum wire, the aluminum alloy wire, and another metal wire.

  The flexible conductive member 14 has a left end side (one end side) inserted into the exposed conductor portion 12 of the electric wire 11 and is electrically connected to the conductor portion 12, and is connected to the right end side (the other end). Side) is a terminal connection portion 14 </ b> A connected to the terminal 18.

The crimping member 17 is cylindrical after crimping, and a pair of crimping pieces are raised from both side edges of the concave bottom plate part, and by caulking from the outside of the wire connection part 15 to the conductor part 12 side, The ends of the pair of caulking pieces are abutted against each other.
Before the crimping member 17 is processed, as shown in FIG. 3, the wire connection portion 15 is U-shaped and the conductor portion 12 exposed at the end portion of the wire 11 is inserted into the wire connection portion 15. The shape can be fitted from the outside.

As shown in FIG. 1, the terminal 18 is a round terminal, and includes an external connection portion 19 connected to the outside and a flexible side connection portion 20 connected to an end portion of the flexible conductive member 14. Have.
The external connection portion 19 has a mounting hole 19A through which an external terminal, a bolt, or the like can be inserted.

  The flexible-side connecting portion 20 has a pair of caulking pieces raised from the bottom plate, and the pair of caulking pieces caulked and crimped so that the flexible conductive member 14 is wound from the outside. Connected to member 14.

  The above-described conductor 10 is accommodated in the connector CN, and even if vibration or the like is given to the electric wire 11 due to some factor, the vibration is absorbed by the portion of the flexible conductive member 14 and transmitted to the terminal 18. Vibration can be reduced. Thereby, the malfunction of the connection with the other party terminal by vibration can be prevented. However, the present invention is not limited to this. For example, the flexible conductive member 14 absorbs the force received by the terminal 18 and does not transmit it to the electric wire 11 side. It is also possible to absorb the dimensional tolerance at the portion of the flexible conductive member 14 to prevent the assembly failure.

  Moreover, in this embodiment, although the extension direction of the electric wire 11 in the connector CN and the extension direction of the terminal 18 are the same directions, not only this but the extension direction of the electric wire 11 in the connector CN, You may arrange | position so that the extension direction of the terminal 18 may differ, In this case, what is necessary is just to bend in the shape which bent the flexible electrically-conductive member 14 (L shape etc.).

A method for manufacturing the conductor 10 will be described.
The conductor exposed by stripping the insulating layer 13 at the terminal portion of the electric wire 11 to expose the conductor portion 12 and the electric wire connecting portion 15 on one end side of the flexible conductive member 14 made of a cylindrical braided wire having both ends open. The part 12 is inserted.

Next, the electric wire connecting portion 15 and the conductor portion 12 on one end side of the flexible conductive member 14 are placed on the caulking member 17, and the caulking member 17 is caulked using a crimping die or the like. In addition, the conductor portion 12 is crimped, and the flexible side connection portion 20 of the terminal 18 is crimped to the terminal connection portion 14A on the other end side of the flexible conductive member 14.
Thereby, the conductor 10 is formed.

According to the present embodiment, the following operations and effects are achieved.
(1) According to the present embodiment, the conductor portion 12 of the electric wire 11 and the flexible conductive member 14 are connected without using a relay member between the electric wire 11 and the flexible conductive member 14. Therefore, it is possible to reduce the number of parts by the amount that does not have a relay member. Therefore, the manufacturing cost can be reduced. Further, by eliminating the relay member, it is possible to prevent the resistance of the conductor 10 from increasing due to the resistance of the connection portion of the relay member to the conductor portion 12 and the flexible conductive member 14.

(2) The electric wire connecting portion 15 is pressed and electrically connected to the conductor portion 12 side, and the flexible conductive member 14 is a braided wire formed by braiding a metal wire.
If it does in this way, when electrically connecting electric wire connection part 15 to conductor part 12, it becomes possible for a braided wire to break an oxide film of conductor part 12.

(3) The electric wire connecting portion 15 and the conductor portion 12 are electrically connected by crimping the electric wire connecting portion 15 and the conductor portion 12.
If it does in this way, it will become possible to electrically connect the conductor part 12 of the electric wire 11 and the electric wire connection part 15 of the flexible conductive member 14 firmly with a simple structure.

(4) The conductor portion 12 is made of aluminum or an aluminum alloy.
In this way, when the conductor portion 12 is made of aluminum or an aluminum alloy and an oxide film is likely to be formed on the surface, the oxide film can be broken by the braided wire.

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG.
The conductor 10 of the first embodiment is electrically connected by crimping the conductor portion 12 and the flexible conductive member 14 with the caulking member 17, but the conductor 21 of the second embodiment is as shown in FIG. 4. The conductor portion 12 and the flexible conductive member 14 are ultrasonically welded to be electrically connected. In the following, the same components as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  The conductor 21 is ultrasonically welded to the electric wire connection portion 15 in a state where the electric wire connection portion 15 of the flexible conductive member 14 is inserted into the conductor portion 12 exposed at the end portion of the electric wire 11. The conductor part 12 and the electric wire connection part 15 are electrically connected.

A method for manufacturing the conductor 21 will be described.
In the terminal part of the electric wire 11, the insulating layer 13 is peeled off and exposed to the conductor part 12, and the electric wire connecting part 15 of the flexible conductive member 14 is placed on the jig (see FIG. 3). And an ultrasonic vibration is given to the electric wire connection part 15 with pressure with a horn.
Thereby, the conductor part 12 and the electric wire connection part 15 are ultrasonic-welded, and the conductor part 12 and the electric wire connection part 15 are electrically connected.

  According to the second embodiment, since the electric wire connection portion 15 and the conductor portion 12 are electrically connected by welding the electric wire connection portion 15 and the conductor portion 12, compared with the case where the electric wire connection portion 15 is crimped. Thus, a separate member for crimping (caulking member 17) becomes unnecessary, and the number of parts can be reduced.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the second embodiment, the wire connection portion 15 and the conductor portion 12 are ultrasonically welded (ultrasonic welding). However, the present invention is not limited to this, and the wire connection portion 15 and the conductor portion 12 are connected by other welding (welding). You may make it connect electrically. For example, the wire connecting portion 15 and the conductor portion 12 may be electrically connected by resistance welding (resistance welding).

(2) The flexible conductive member 14 of the above embodiment has a tubular shape as a whole, but is not limited to this, as long as at least the wire connection portion 15 has a tubular shape and can be inserted through the conductor portion 12. The portion may not be cylindrical. For example, a portion other than the wire connection portion 15 may be formed in a band shape (one or a plurality of layers) and connected to the terminal 18.

(3) The terminal is not limited to the shape of the terminal 18 of the above embodiment, and various shapes can be used. For example, it is good also as a female terminal which has a box-shaped external connection part, and a male terminal which has a rod-shaped male tab.

(4) The conductor portion 12 of the electric wire 11 is made of aluminum or an aluminum alloy, but is not limited thereto, and other types of metals may be used. For example, copper or a copper alloy may be used.

DESCRIPTION OF SYMBOLS 10, 21 ... Conductor 11 ... Electric wire 12 ... Conductor part 13 ... Insulating layer 14 ... Flexible conductive member 14A ... Terminal connection part 15 ... Electric wire connection part 17 ... Caulking member 18 ... Terminal CN ... Connector

Claims (6)

An electric wire whose periphery is covered with an insulating layer;
A flexible electric conductor having a cylindrical wire connecting portion through which the conductor portion exposed from the insulating layer is inserted at one end side at the terminal portion of the electric wire , and the other end side connected to a terminal accommodated in the connector A member, and
The flexible conductive member is a braided wire formed by braiding metal wires,
The terminal has a crimped piece,
The electric conductor in which the other end side of the flexible conductive member is caulked so as to be wound from the outside by the caulking piece, and the electric wire connecting portion and the conductor portion are electrically connected. . The wire connecting portion, the conductive member according to claim 1 which is pressed against the conductor portion are electrically connected. The conductor according to claim 2, wherein the wire connection portion and the conductor portion are electrically connected in a state where the wire connection portion and the conductor portion are crimped. The conductor according to claim 2, wherein the wire connection portion and the conductor portion are electrically connected in a state where the wire connection portion and the conductor portion are welded. The conductor according to claim 4, wherein the welded state is an ultrasonic welded state or a resistance welded state . The conductor according to any one of claims 2 to 5, wherein the conductor portion is made of aluminum or an aluminum alloy.

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