JPH04264376A - Connector and method for connecting shielding wire to connector - Google Patents

Abstract

PURPOSE:To reduce the number of process of terminal treatment shielding wire, and improve the shielding effect. CONSTITUTION:A pressure-connect terminal 22 for opening/closing terminal insertion holes 29 is installed to a base end side of a connector housing main frame 20. A pressure-connecting part of the pressure-connect terminal 22 breaks the outer cover of shielding wires 31, and is pressure-connected to shielded conductors. A shielded conductor 41, which is shortened through a shielded conductor 42 and a center conductor and a terminal 36, connects an object side connector and each shielded conductor 42 through the pressure-contact terminal 22. A lock member 26 fixes the pressure-connect terminal 22.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector having electrical connection terminals housed therein, and more particularly to a connector suitable for coupling shielded wires and a method for coupling shielded wires to the connector.

0002

2. Description of the Related Art Conventionally, a connector for electrically connecting shielded wires has been constructed as shown in FIG. First, the shield wire outer sheath 2 of the shield wire 1 is peeled off by a length a that does not interfere with assembly work, and the exposed shield conductor (braid) 3 is connected to one end of the joint wire 5 via the joint terminal 4. Caulk and join. A terminal 6 is connected to the other end of the joint wire 5. On the other hand, shield wire 1
A terminal 8 is also coupled to the tip of the center conductor 7. The shield wire 1 that has been subjected to such a shield terminal treatment is insulated using, for example, an insulating tape 9, and the terminals 6 and 8 are inserted into the terminal accommodating chamber 11 of the male connector 10 from the proximal end side. Then, by fitting the male connector 10 and the female connector 12 together, and engaging the lock arm 13 formed on the male connector 10 and the locking part 14 formed on the female connector 12, This ensures a stable electrical connection.

0003

[Problems to be Solved by the Invention] However, in the connector configured as described above, it is necessary to perform shield terminal treatment such as coupling treatment between the shield conductor 3 and joint wire 5 and exterior treatment with a protective sleeve or tape at the joint portion. The problem is that it takes a lot of man-hours. In addition, with this configuration, in order to improve work efficiency,
The exposed length a of the center conductor 7 must be maintained at about 100 to 200 mm, which reduces the shielding effect during this period, complicates the insulation structure, and makes it difficult to make the connection part to the connector compact. There is a problem.

The present invention has been made to solve these conventional problems, and it is possible to reduce the number of processing steps, improve the shielding effect, and reduce the number of connections to the connector. It is an object of the present invention to provide a connector that can be made compact and a method for connecting shielded wires to the connector.

[0005]

[Means for Solving the Problems] A connector according to the present invention includes a connector housing body formed with a terminal accommodating chamber for accommodating a terminal of a shielded wire in which an electrical connection terminal is coupled to a center conductor; A pressure contact terminal is provided on the connector housing body so as to be openable and closable, and is fitted to the shield wire extending from the proximal end side of the connector housing body to be electrically connected to the shield conductor of the shield wire. It is characterized by Further, in the method for coupling a shielded wire to a connector according to the present invention, a shielded wire having a center conductor coupled to an electrical connection terminal and an electrical connection terminal that short-circuits the center conductor and the shielded conductor are coupled. At least one shielded wire for shielded connection is housed in a terminal accommodating chamber of the connector housing main body, and a conductive pressure contact terminal is pressed into contact with the shielded conductor, thereby removing the outer sheath of the shielded wire and the shielded wire for shielded connection. It is characterized in that it is broken to connect the internal shield conductor and the terminal.

[0006]

[Operation] According to the present invention, the insulation displacement terminal provided in the connector housing body so as to be openable and closable is brought into pressure contact with the shield conductor of the shield wire in the closed state, thereby establishing electrical continuity between the insulation displacement terminal and the shield conductor. Therefore, conduction with the shield conductor can be established through some means for establishing conduction with the pressure contact terminal when the connector is coupled. Therefore, according to the present invention, there is no need for complicated terminal processing of the shield conductor, which is conventionally necessary and requires many processing steps, and the processing steps can be significantly reduced.

Further, according to the present invention, since the shield conductor is connected by pressure contact at the base end of the connector, the center conductor can be covered with the shield conductor up to the base end of the connector. Therefore, the shielding effect can be improved more than before. Furthermore, since it is no longer necessary to insulate the connecting portion to the connector, this portion can be made much more compact than before. Further, according to the present invention, since the shield conductors are commonly connected by the pressure contact terminal, the overall number of terminals can be significantly reduced.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the structure of a connector housing according to an embodiment of the present invention. Although a male connector will be described here, it goes without saying that a similar configuration can be used for a female connector as well. The connector housing main body 20 is formed by forming a plurality of square hole-shaped terminal accommodating chambers 21 communicating from the distal end to the proximal end. A metal pressure contact terminal 22 is attached to the base end side of the connector housing body 20. The pressure contact terminal 22 is provided on the base end side of the upper surface of the connector housing body 20 so as to be openable and closable by a hinge portion 23, and a shield wire 31 is provided in a portion that closes the terminal insertion opening 29 on the base end side of the connector housing body 20. A semicircular press-contact portion 24 is formed for press-contact. As shown in FIG.
A blade is formed on its inner edge so that it can be connected to the shield conductor 33, and its diameter D1 is slightly smaller than the outer diameter D2 of the shield conductor 33. Further, the entrance portion of the pressure contact portion 24 is widened in a tapered shape to facilitate fitting with the shield wire 31. On the other hand, the connector housing body 2
A locking member 26 is formed on the base end side of the lower surface of the main body 20 via a hinge portion 25 formed integrally with the main body 20. This locking member 26 is configured so that the pressure contact terminal 22 is connected to the housing main body 20.
When the terminal insertion opening 29 is closed, the distal end surface of the pressure contact terminal 22 is fixed from above, and the lock portion 27 is locked to prevent the pressure contact terminal 22 from coming off.

The shield wire 31 has a terminal 36 coupled only to its center conductor 34. The terminal 36 connects its insulation barrel 36a to the center conductor outer sheath 3.
4a, and attach the wire barrel 36b part to the core wire 34b.
It is firmly fixed by caulking it to the tip. At this time, in order to prevent some of the thin wires of the shield conductor 33 from coming into contact with the terminal 36, the distance b from the lead-out portion of the center conductor 34 to the base end of the terminal 33 is set to an appropriate value. Note that a specific shielded wire 41 among the plurality of shielded wires is used as a shielded connection wire for connecting the shielded conductor 33 of the other shielded wire 31 and the mating connector. Therefore, for this shielded wire 41, the shielded conductor 42 is pulled out to the tip of the center conductor 43, and the insulation barrel 36a of the terminal 36 is caulked together with the shielded conductor 42, thereby shorting the shielded conductor 42 and the center conductor 34. I try to let them do it.

With such a configuration, the shield wire 31
, 41, it is only necessary to connect the terminals 36 to the center conductors 34, 43, so the number of steps required for terminal processing can be significantly reduced. The terminal-treated shielded wires 31, 41 are inserted into the terminal accommodating chamber 21 from the terminal insertion opening 29 of the connector housing body 20, and fixed by a fixing means such as a stopper or a lance (not shown). Next, when the pressure contact terminal 22 is closed, the pressure contact portion 24 bites into the outer sheath of the shield wires 31 and 41 and comes into contact with the shield conductors 33 and 42.
is short-circuited to the terminal 36 of the shielded wire 41 via the pressure contact terminal 22. Therefore, electrical connection between the mating connector and the shield conductor 33 is possible via this terminal 36.

FIG. 3 is a perspective view showing the connector in a state where the pressure contact terminal 22 is closed and the locking member 26 is locked. As is clear from this figure, each shield wire 31, 4
1 is connected to the connector housing main body 20 in a state where the connector is shielded by a shield conductor up to the proximal end thereof, so that a good shielding effect can be obtained.

Note that in the above embodiment, the shield wire 31
. The shield conductor 33 and the pressure contact terminal 22 may be electrically connected to each other by being folded back to cover the folded portion and the pressure contact terminal 22 is brought into pressure contact with the folded portion.

Furthermore, in the above embodiment, the shield conductor 33
Since the shielded wire 41 is used as a shielded connection wire for connecting with the mating connector, there is an advantage that it can be connected to the pressure contact terminal 22 in the same manner as other shielded wires 31. However, the present invention is not limited to this, and for example, the connector housing main body 20
The terminal 36 accommodated in the terminal accommodating chamber 21 is the pressure contact terminal 2
It is also possible to have a structure in which it is in direct contact with 2.

[0015] Generally, there are several sizes of electric wires accommodated in a connector, but according to the present invention, it is possible to handle electric wires of various sizes simply by changing the insulation displacement terminal, and the same size can be accommodated. It is also possible to use the connector by accommodating unshielded wires together with shielded wires. Further, according to the present invention, since the pressure contact terminal bites into the shield wire, the bonding force between the shield wire and the connector is improved.
It also has the effect of providing a double locking function to prevent the wire from coming off when it is pulled.

Note that the position and number of the shield wires 41 for shield connection are not limited to those in the above-described embodiment. In this case, by making the number of shield connection shield wires connected to the male connector and the shield connection shield wires connected to the female connector different from each other,
The shield potential can be easily branched and collected from one connector to the other connector. Further, in the above embodiment, the present invention was explained using a single-core shielded wire, but the present invention can also be applied to a case where a multi-core shielded wire with two or more cores is used by simply changing the structure of the connector slightly. . Furthermore, it goes without saying that the connector of the present invention can also be used as a connector for ordinary electric wires other than shielded wires.

[0017]

[Effects of the Invention] As described above, according to the present invention, by press-contacting the pressure contact terminal provided in the connector housing body so as to be freely openable and closable to the shield conductor of the shield wire,
Since the shielded conductor and the mating connector are electrically connected through this pressure contact terminal, there is no need for terminal processing of the shielded conductor or troublesome processing of protective sleeves and tapes, etc., which were required in the past, and the material and processing man-hours are reduced. can be significantly reduced, resulting in significant cost reductions. Further, according to the present invention, the shielding effect can be enhanced up to the connector base end, and the connector base end can be made compact. Further, according to the present invention, since the shield conductors are commonly connected by the pressure contact terminal, the overall number of terminals can be reduced. In other words, in the past, each shielded wire required at least two terminals for the center conductor and the shielded conductor.
The terminal accommodating chamber of a connector was required to be more than twice the number of shielded wires, but according to the present invention, it is sufficient to provide one shielded terminal for the entire connector, so more shielded wires can be accommodated. can. Further, according to the present invention, it is possible to connect wires of various thicknesses and numbers simply by changing the insulation displacement terminal, so it is highly versatile, and also has a double locking function because the insulation displacement terminal bites into the shielded wire. According to
This also has the effect of improving the ability to prevent wires from coming off.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a shield connector according to an embodiment of the present invention.

FIG. 2 is a plan view showing the relationship between the main parts of the pressure contact terminal and the shield wire in the same connector.

FIG. 3 is an external perspective view of the connector.

FIG. 4 is a perspective view showing an end portion of a shielded wire according to another embodiment of the present invention.

FIG. 5 is a perspective view showing a conventional shield connector.

[Explanation of symbols]

1, 31, 41... Shield wire, 2, 32... Shield wire sheath, 3, 33, 42... Shield conductor, 4... Joint terminal, 5... Joint wire, 6, 8, 36... Terminal, 7, 34
, 43... Center conductor, 9... Tape, 10... Male connector,
11, 21...Terminal accommodation chamber, 12...Female connector, 22...
Pressure contact terminal, 23, 25... Hinge portion, 24... Pressure contact portion, 26
...Lock member, 27...Lock portion, 29...Terminal insertion slot.

Claims (3)

[Claims] 1. A connector housing body formed with a terminal accommodating chamber for accommodating the terminal of a shielded wire in which an electrical connection terminal is coupled to a center conductor, and a connector provided in the connector housing body so as to be openable and closable. A connector comprising a press-contact terminal that fits into the shielded wire extending from the base end side of the housing body and is electrically connected to the shielded conductor of the shielded wire. 2. The connector according to claim 1, wherein the pressure contact terminal is connected to the internal shield conductor by breaking the outer sheath of the shield wire by pressure contact. 3. A shielded wire in which a terminal for electrical connection is coupled to a center conductor, and at least one shielded wire for shield connection in which a terminal for electrical connection is coupled to a center conductor to short-circuit the center conductor and the shielded conductor. are accommodated in the terminal housing chamber of the connector housing main body, and a conductive pressure contact terminal is press-contacted to the shield conductor, thereby breaking the outer sheath of the shield wire and the shield connection shield wire, and disconnecting the internal shield conductor and the terminal. A method for coupling a shielded wire to a connector, characterized in that the method connects a shielded wire to a connector.