JP3344622B2 - Shielded wire connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shielded wire connector, and more particularly, to a shielded wire connector structure for securing a shielding effect of a shielded wire.

[0002]

2. Description of the Related Art Conventionally, when a shielded wire is connected to an electric device or the like, it is necessary to prevent the inner wire of the shielded wire exposed from the braided wire for noise shielding from being affected by noise from other wires or devices. To this end, a noise shielding structure 100 as shown in FIGS. 6 and 7 is used. In FIG. 6, a shielded electric wire 101 is a covered inner wire 104 and a braided wire 10 for noise shielding that covers the outer wire.
3 and the outside thereof is covered with an insulating coating 102.

[0003] In order to crimp the connection terminal 105 to the shielded electric wire 101, first, an insulating coating 1
02 is peeled off, the internal wire 104 is taken out from the braided wire 103, and the connection terminal 105 is crimped to the end of the taken out internal wire 104. Next, the braided wire 103 is twisted into an electric wire shape, and the extension wire 107 with the connection terminal 105 crimped to one end is connected to the end of the twisted braided wire 103. These connection terminals 105 are inserted into the terminal accommodating chamber 112 of the connector 110 as shown in FIG.
By mating the mating connector 10 with a mating connector (not shown), it is possible to make an electrical connection between the connection terminal 105 and the mating connecting terminal housed in the mating connector.

[0006] However, since the inner wire 104 in FIG. 6 is exposed by stripping off the insulating coating 102 and the braided wire 103, the inner wire 104 is susceptible to noise from external electric wires and equipment. There is a concern that an electronic device or the like to which the line 104 is connected may malfunction. Therefore, a noise shielding tubular body 106 having an inner diameter slightly larger than the outer diameter of the shielded electric wire 101 is provided outside the exposed inner wire 104.
Was fitted.

FIG. 7 shows a state in which a shielding tubular body 106 is fitted outside the shielded electric wire 101. Tubular body 1
06 is made of a flexible metal member,
The inner wall of No. 6 is pressed against the braided wire 103 folded back along the shielded electric wire 101. Thereby, the braided wire 1
03 and the tubular body 106 are in an electrically connected state, and of the portions where the inner wire 104 is exposed from the insulating coating 102 and the braided wire 103, the portion where the tubular body 106 is fitted is protected from noise, and Was prevented from malfunctioning.

[0006]

However, when the above-mentioned noise shielding structure 100 is manufactured, a step of twisting the braided wire 103 or an extension wire 10 at the end of the braided wire 103 are required.
7, a large number of assembling steps such as a step of connecting the shielding tubular body 106 to the shielded electric wire 101 and the like are required, resulting in poor production efficiency and an increase in production cost. In addition, when the braided wire 103 is twisted, a part of the braided wire 103 may be cut, and there is a problem that a shielding effect is reduced. The present invention has been made in view of the above problems, and has as its object to provide a shielded wire connector that can reduce the number of assembling steps and can secure a shielding effect at a connector connecting portion of the shielded wire.

[0007]

The object of the present invention is to accommodate a connection terminal crimped to the end of a shielded wire having a braided wire for noise shielding in one connector and the other connector to the other connector. In a shielded wire connector that performs electrical connection by fitting to one connector, a flexible conductive member is provided on the one connector so as to contact the braided wire near the connection terminal, and the other connector is provided with a flexible conductive member. A conductive member that is grounded to the connector is provided, and the braided wire on the one connector side when the connector is fitted,
The problem can be solved by a shielded wire connector characterized by being electrically connected to the conductive member on the other connector side via the flexible conductive member.

[0010] According to the shielded wire connector having the above structure, one of the connectors is provided with a flexible conductive member so as to contact a braided wire near the connection terminal, and the other connector is provided with a grounded conductive member. When the connectors are fitted together, the braided wire on one connector side is electrically connected to the conductive member on the other connector side via the flexible conductive member. Therefore, the connection terminal crimped to the end of the shielded wire is housed in one connector, and the connector is fitted to the other connector, so that the flexible conductive member is exposed at the end of the shielded wire. The braided wire is in contact with a grounded conductive member provided on the other connector, and an electrical connection is made between the braided wire and the conductive member. Therefore, only by exposing the braided wire at the end of the shielded wire, the shielding effect of the shielded wire end is secured with the fitting of both connectors.

Further, the steps of twisting the braided wire, connecting the extension wire to the end of the braided wire, and fitting the shielding tubular body to the shielded wire, which are conventionally required, are unnecessary. Therefore, the assembling work is simplified.

Another object of the present invention is to provide a shielded electric wire connector having the above-mentioned configuration, wherein the flexible conductive member is provided on a side holder for preventing the connection terminal from slipping off. The problem can be solved by the characteristic shielded wire connector.

According to the shielded wire connector having the above structure, the connection terminal is double-locked by mounting the side holder, and the flexible conductive member integral with the side holder is a braided wire at the end of the shielded wire. Contact Therefore,
Since the connection terminal can be double-locked and the braided wire and the flexible conductive member can be connected in one step, the assembling work can be further simplified.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a shielded wire connector according to an embodiment of the present invention; FIG. FIG. 1 is an exploded perspective view showing an embodiment of a male connector in the shielded wire connector of the present invention, FIG. 2 is a partial sectional view of the male connector in FIG. 1, and FIG.
4 is a partial cross-sectional view showing a state where the side holder is attached to the male connector in FIG. 4, FIG. 4 is a partial cross-sectional view in a process of inserting the male connector in FIG. 3 into the female connector, and FIG. It is a figure showing another example of an embodiment.

As shown in FIG. 1, the male connector 1 of this embodiment comprises a male connector housing 3 having a terminal insertion opening 10 and an opening 9 and a side holder 2 that can be mounted in the opening 9. The side holder 2 is provided with a holder locking claw 6 and a terminal locking portion 5 on a holder body 4. The holder locking claw 6 is for fixing the side holder 2 in the housing 3 by engaging with a not-shown locking portion inside the male connector housing 3. The terminal locking portion 5 is a member for double locking a female terminal 50 described later in the male connector housing 3.

Further, a flexible conductive member 7 which is a characteristic configuration of the present embodiment is attached to the holder main body 4 by a fixing pin 8. The flexible conductive member 7 is made of a thin copper plate or the like, and its tip is bent to have a spring property.

Next, with reference to FIGS. 2 and 3, the configuration of the shield wire end, the connection terminal, and the connector housing will be described. As shown in FIG.
The female terminal 50 is connected to the end of the zero. The female terminal 50 includes an internal wire caulking portion 51, a core wire caulking portion 52, and a connection portion 53.

In order to connect the shielded electric wire 40 and the female terminal 50, first, the insulating coating 41 at the end of the shielded electric wire 40 is peeled off, and the coated inner wire 43 is taken out from the braided wire 42. Next, the core wire 44 is exposed by peeling off the coating on the tip of the extracted internal wire 43. Then, the internal wire 43 is caulked by the internal wire caulking portion 51 of the female terminal 50,
The female terminal 50 is attached to the shielded electric wire 40 by caulking the core wire 44 with the core wire caulking portion 52.

On the other hand, the male connector housing 3 has a locking lance 11 erected on an inner side wall (lower wall in the figure). The locking lance 11 is a flexible member extending along the side wall of the connector housing 3 and has a locking projection 12 at the tip.

Next, the assembly of the male connector will be described. First, when the shielded electric wire 40 with the female terminal 50 crimped to the end is inserted into the male connector housing 3, the female terminal 50
Abuts on the locking projection 12 at the tip of the locking lance 11. When the shielded wire 40 is pressed into the housing 3 in this state, the tip of the locking arm 11 bends toward the inner wall of the housing (downward in the figure). When the shield wire is further pushed in, the locking projections 12 are fitted into the recesses provided in the female terminal 50, and the female terminal 50 is locked in the connector housing 3.

Next, the assembly of the side holder will be described. As shown in FIG. 3, when the side holder 2 is mounted from above the opening 9 of the male connector housing 3, the side holder 2 is inserted into the space between the internal wire crimping portion 51 of the female terminal 50 and the connection portion 53. The terminal locking portion 5 is fitted to perform double locking of the female terminal 50. At this time, the holder body 4
Is in contact with the braided wire 42 at the end of the shielded electric wire 40, and the flexible conductive member 7 bends outside the male connector housing 3 (upward in the figure).

Next, the fitting with the mating female connector will be described. As shown in FIG. 4, the male connector 1 described above is inserted into the housing of the female connector 13. Female connector 1
3 has a male terminal 15 inside and a conductive plate 14 which is a conductive member having another characteristic configuration of the present embodiment. The conductive plate 14 in the present embodiment is insert-molded in the female connector housing 16.

When the male connector 1 and the female connector 13 are fitted to each other, the female terminal 50 and the male terminal 15 are electrically connected, and at the same time, the flexible conductive member bulging out of the male connector housing 3. 7 comes into contact with the conductive plate 14 on the female connector side, and the braided wire 42 and the conductive plate 14
Are electrically connected via

According to the shielded wire connector described above, the female terminal 5 crimped to the end of the shielded wire 40
0 is accommodated in the male connector 1, and the male connector 1 is fitted to the female connector 13 so that the flexible conductive member 7 is provided on the braided wire 42 exposed at the end of the shielded wire 40 and the female connector 13. The conductive plate 14 contacts the grounded conductive plate 14 to electrically connect the braided wire 42 and the conductive plate 14.
Therefore, only by exposing the braided wire 42 at the end of the shielded electric wire 40, the shielding effect of the shielded electric wire end can be ensured in accordance with the fitting of both connectors. Parts such as a body become unnecessary, and the number of parts can be reduced.

In addition, the steps of twisting a braided wire, connecting an extension wire to the end of the braided wire, and fitting a shielding tubular body to a shielded wire, which are conventionally required, are unnecessary. Therefore, the assembling work is greatly simplified, and the production cost can be reduced. Further, since the braided wire 42 is not twisted, there is no fear that the braided wire 42 is cut and the shielding effect is reduced.

Further, by mounting the side holder 2, double locking of the female terminal 50 is performed, and the flexible conducting member 7 integral with the side holder 2 comes into contact with the braided wire 42 at the end of the shielded electric wire. . Therefore, double locking of the female terminal 50 and connection between the braided wire 42 and the flexible conductive member 7 can be performed in one step, so that the assembling work can be further simplified.

Next, another embodiment of the male connector in the shielded wire connector of the present invention will be described. FIG.
As shown in FIG. 2, the male connector 20 is capable of connecting two shielded electric wires 40. The male connector 20 includes a male connector housing 21 having an opening 9 and two terminal insertion ports 10, and a side holder 22 attachable to the opening 9.
Two pieces of flexible conducting members 23 are mounted at positions facing each other by fixing pins 24. With this configuration, it is possible to simultaneously secure the shielding effect at the ends of the two shielded wires.

It is needless to say that the shielded wire connector of the present invention is not limited to the above-described embodiment, and various embodiments are possible.
For example, if a general side holder without a flexible conducting member is applied to the male connector of the above-described embodiment, a general electric wire other than a shielded electric wire can be connected. Therefore, this connector can correspond to various kinds of electric wires having the same diameter. Further, the conductive plate, which is a conductive member provided on the female connector, may be attached to the connector instead of insert molding. Further, the flexible conductive member provided on the male connector or the side holder may be fixed by means other than the fixing pin, for example, insert molding.

[0027]

As described above, according to the shielded wire connector of the present invention, one of the connectors is provided with the flexible conductive member so as to contact the braided wire near the connection terminal, and the other connector is grounded. When the connectors are fitted together, the braided wire on one connector side is electrically connected to the conductive member on the other connector side via the flexible conductive member. Therefore, the connection terminal crimped to the end of the shielded wire is housed in one connector, and the connector is fitted to the other connector, so that the flexible conductive portion is exposed at the end of the shielded wire. The braided wire is in contact with a grounded conductive member provided on the other connector, and an electrical connection is made between the braided wire and the conductive member. Therefore, only by exposing the braided wire at the end of the shielded wire, the shielding effect at the end of the shielded wire is secured with the fitting of both connectors, so that conventionally required parts such as a shielded cylindrical pair. Is unnecessary, and the number of parts can be reduced. Also, conventionally required, a step of twisting a braided wire, a step of connecting an extension wire to the end of the braided wire,
Since the step of fitting the shielding tubular body to the shielded electric wire becomes unnecessary, the assembling work is simplified, and the production cost can be reduced.

Further, according to the shielded wire connector of the present invention, in the shielded wire connector having the above-described configuration, the flexible conductive member is provided on the side holder for preventing the connection terminal from coming off. Accordingly, by attaching the side holder, the connection terminal is double-locked, and the flexible conductive member integral with the side holder comes into contact with the braided wire at the end of the shielded electric wire. The heavy locking and the connection between the braided wire and the flexible conducting member can be performed, and the assembling work can be further simplified.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of a male connector in a shielded wire connector of the present invention.

FIG. 2 is a partial cross-sectional view of the male connector in FIG.

FIG. 3 is a partial cross-sectional view in a state where a side holder is attached to the male connector in FIG. 2;

FIG. 4 is a partial cross-sectional view in a process of inserting the male connector in FIG. 3 into the female connector.

FIG. 5 is a view showing another embodiment of the male connector in the shielded wire connector of the present invention.

FIG. 6 is an exploded perspective view showing a conventional noise shielding structure.

FIG. 7 is an assembled perspective view of the noise shielding structure in FIG. 6;

[Explanation of symbols]

 1, 20 Male connector (one connector) 2, 22 Side holder 3, 21 Male connector housing 4, 25 Holder body 5 Terminal locking portion 6 Holder locking claw 7, 23 Flexible conductive member 8, 24 Fixing pin 9 Opening DESCRIPTION OF SYMBOLS 10 Terminal insertion opening 11 Locking lance 12 Locking projection 13 Female connector (other connector) 14 Conductive plate (conductive member) 15 Male terminal 16 Female connector housing 40 Shield wire 50 Female terminal (connection terminal)

Claims (2)

(57) [Claims] 1. A connection terminal crimped to an end of a shielded electric wire having a braided wire for noise shielding is housed in one connector, and the other connector is fitted to the one connector to make an electrical connection. In a shielded wire connector, a flexible conductive member is provided on the one connector so as to contact the braided wire near the connection terminal, and a conductive member grounded on the other connector is provided. A shielded wire connector, wherein the braided wire on the one connector side is electrically connected to the conductive member on the other connector side via the flexible conductive member when the connector is fitted. 2. The shielded wire connector according to claim 1, wherein the flexible conductive member is provided on a side holder for preventing the connection terminal from coming off.