JP2001148209A - Connecting method of twist pair wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To twist a paired wire up to a neighbouring area of the connector. SOLUTION: A pair of twisted wires made by twisting two wires together are pulled apart so that they become distant from each other at a side where a terminal for connector is connected, and two wires at the side of connector are released from twist by compressing the twisted part adjacent to the terminal for connector toward the other side where the pitch of twist becomes dense. In this released condition, the terminals of each wire are inserted and fixed to the connector, and the original pitch of twist is restored up to the neighbouring area of the terminal for connector, by squeezing the part where the pitch of twist is condensed, toward connector connecting side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a twisted pair electric wire to a connector, and more particularly, to twisting a twisted pair electric wire used as a wire harness for an automobile to near a connection end with a connector to improve a noise shielding performance by electromagnetic waves.

[0002]

2. Description of the Related Art In recent years, twisted pair electric wires in which two electric wires are twisted have been used in order to cut off generation of noise due to electromagnetic waves. For example, it is necessary to block noise from the electric wire connected to the speaker mounted on the car, so a pair of electric wires connecting the power supply and the speaker and the electric wire connecting the speaker and the ground are twisted. Together, it is a twisted pair wire.

[0003] The above twisted pair electric wire is formed by twisting two electric wires at a predetermined pitch with a twisting jig. As shown in FIG. 6, the twisted pair wires twisted by this jig are twisted to the ends of wires w1 and w2 to which terminals T are connected.

When the terminals T connected to the terminals of the wires w1 and w2 of the twisted pair are inserted into the connectors and connected to the connectors, if the terminals T are twisted up to the vicinity of the terminals T as shown in FIG. It becomes very difficult to insert the terminal T. Therefore, as shown in FIG.
Before inserting the terminal into the connector, twist the terminal in the direction opposite to the twisting direction so that about 50 to 10
The twist is released by untwisting the required section X of about 0 mm, and in this state, the terminal T is connected to the connector C as shown in FIG.
Has been inserted.

[0005]

The twisted pair electric wire is
As the untwisting section X becomes longer, the work of inserting the connector C into the connector C becomes easier. However, since the twist is released, there is a problem that noise easily enters.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to improve the noise cutoff performance by easily inserting a terminal of a twisted pair wire into a connector and twisting the terminal to the connector position. .

[0007]

In order to solve the above-mentioned problems, the present invention pulls a twisted pair electric wire in which two electric wires are twisted so as to open to both sides from a tip end to which a terminal for connector connection is attached. Separate them and press and shrink them to the other end while making the twisted part on the connector connection terminal mounting side a small pitch, and make the two wires on the connector connection side untwist, and in this untwisted state each wire terminal The terminal is inserted into the connector and locked, and then the twisted portion which is pressed and shrunk as the above small pitch is pushed to the connector connection side, and the twisted portion is restored while returning to the original pitch to near the connector connection end. To provide a twisted pair wire connector connection method.

As described above, before inserting the connector into the terminal,
If you pull the twisted pair wire on both sides so that it separates,
Without twisting, twisting retreats from the terminal side while reducing the pitch, and the wires on the connection side with the terminal T become independent one by one as in the case where the twisting is untwisted. Therefore, when the terminal is inserted into the connector in this state, the insertion can be easily performed. After the terminal is inserted, when the twisted portion having the reduced pitch is drawn to the connector side and stretched, the twisted portion returns to the original twisted state and can be twisted to the vicinity of the connection end to the connector. Therefore, it is possible to reliably prevent noise from entering near the connector, which tends to occur conventionally.

In order to prevent the portion compressed and reduced as the small pitch from returning to the original state before the terminal is inserted into the connector, an operator presses the small pitch portion by hand while holding the small pitch portion to the connector. Terminal may be inserted. In place of this method, if a rod is inserted into the twisted portions at both ends of the small pitch portion or if the stick is held between clips, the twisting can be prevented from returning.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method of the present invention will be described below with reference to FIGS.
This will be described with reference to FIG. As shown in FIG. 1, the twisted pair wires w1 and w2 to which the terminals T for connector connection are respectively connected to the terminals are twisted with each other to a position close to the terminals T by a twisting jig (not shown). It is in a state. The terminals T of the twisted pair wires w1 and w2
Before inserting the connector T into the connector C, the terminal T is pulled away from the distal end side to which the terminal T is attached so as to open to both sides as shown by arrows. That is, in the related art, the wire is twisted back by rotating in the direction opposite to the twisting direction, but the wire is pulled in the opening direction so as to separate from each other without rotating.

When the twisted pair wires w1 and w2 are pulled in the opening direction, as shown in FIG. 2, the twisted portion is compressed to the other end while the pitch is reduced, thereby forming the small pitch portion 1, and Tip 1a of the small pitch portion 1
The electric wires w1-1 and w2-1 from the terminal T to the terminal T are in a twisted state and are independent of each other. Therefore, the electric wires w1 and w2 may be pulled in the separating direction until the lengths of the electric wires w1-1 and w2-1 become the required length of the untwisted section (50 mm to 100 mm).

As described above, the terminal T of the terminal of each of the independent wires w1-1 and w2-1 which is untwisted and independent at the connection side with the terminal T
Into the connector C as shown in FIG. At this time, if the operator presses the tip 1a of the small pitch portion 1 with a finger so that the small pitch portion 1 does not return to the twisted state, it is possible to reliably prevent the small pitch portion 1 from returning to the twisted state.

After the terminal T is inserted into the connector C and locked, the operator returns to the original twisting pitch when the operator moves the small pitch portion 1 to the terminal T side. At this time, since the wires w1-1 and w2-1 in the untwisted state have a habit of twisting, the wires can be smoothly returned to the original pitch when twisted by the jig. Therefore, as shown in FIG. 4, the wires are twisted at the same twisting pitch as the other portions up to a position near the connector C (a so-called connector lower position).

The connector C has a twisted pair electric wire w1,
In addition to w2, terminals of other electric wires w3, w4... are also inserted, but other electric wires w3, w4.
The second terminal may be inserted before or after the second terminal. When a terminal of another twisted pair wire is inserted into the connector C, the twisted pair wire w1,
The terminal may be inserted in the same manner as w2.

FIG. 5 shows a method of forming the small pitch portion 1 on the twisted pair wires w1 and w2 and then preventing the small pitch portion 1 from returning until the terminal is inserted into the connector. Both ends 1a and 1b of the small pitch portion 1 are shown. Twisted electric wire w1,
The rods 5, 5 are inserted between w2. Note that instead of the rods 5 and 5, the clips may be sandwiched between the electric wires w1 and w2.
Thus, when the both ends of the small pitch portion 1 are locked by the rod or the clip, the small pitch state can be maintained.

[0016]

As is clear from the above description, according to the present invention, the twisted pair wires are twisted in the direction opposite to the twisting direction, and the wires on the terminal connection side are independently untwisted one by one. State, so
The terminal can be easily inserted and locked in the connector.
In addition, after inserting the terminal, if the small pitch portion is twisted toward the connector side, it can be restored to the original twisted state of the pitch, and a twisted pair wire twisted to the position below the neck of the connector can be used it can. As a result, the noise blocking performance near the connector can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a method for separating a twisted pair electric wire according to the present invention.

FIG. 2 is a perspective view showing a state in which an electric wire on a terminal connection side is untwisted.

FIG. 3 is a perspective view showing a method of inserting a terminal into a connector and returning a twisted pair wire to an original state.

FIG. 4 is a perspective view showing a state where a twisted pair electric wire is connected to the connector.

FIG. 5 is a perspective view showing another method of the present invention.

FIG. 6 is a perspective view showing a twisted pair electric wire.

FIG. 7 is a perspective view showing a conventional example.

FIG. 8 is a perspective view showing a state in which a conventional twisted pair electric wire is connected to a connector.

[Explanation of symbols]

 w1, w2 twisted pair wire T terminal C connector 1 small pitch part 5 rod

Claims (2)

[Claims] 1. A twisted pair electric wire in which two electric wires are twisted is pulled away from a tip end side on which a connector connecting terminal is attached to both sides to separate the twisted pair electric wire, and a twisted portion on a connector connecting terminal attaching side is reduced. Pressing and shrinking to the other end while making the pitch, twist the two wires on the connector connection side, insert and lock the terminal of each wire end into the connector in this untwisted state. A method for connecting a twisted pair wire to a connector, in which the twisted portion that has been pressed and shrunk is pushed to the connector connection side, and the twisted portion is restored while returning to the original pitch near the connector connection end. 2. A rod is inserted into a twisted portion at both ends of the portion compressed and shrunk as the small pitch, or is pinched by a clip so that the twist does not return, and in this state, a terminal is connected to the connector. The connector connection method for a twisted pair wire according to claim 1, wherein the connector is inserted.