JPH09237655A - Ground-heightened electric connector assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connector assembly in which a ground function is heightened for preventing transmission of a high frequency signal by an error. SOLUTION: An electric connector assembly is composed of a plug connector 2 and a receptacle connector 3. An extension lead 9 is formed on a metal shield 6 in the plug connector 2 to be disposed at an alignment part of a terminal 5, and among plural terminals 15 of the receptacle connector 3, at least one terminal 15 is engaged with the extension lead 9 to be electrically continuous. The terminal 15 engaged with the extension lead 9 is used as a ground terminal, thereby a ground function is heightened.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a ground reinforced electrical connector assembly suitable for use in high frequency signal circuits.

[0002]

2. Description of the Related Art Conventionally, in a circuit in which a high frequency signal is handled, an electric connector interposed between printed circuit boards and printed circuit boards or a connection section between the printed circuit board and a wire should prevent high frequency signals from leaking to the outside. , An electrical connector with a metallic shield around an insulating housing is used. This type of electrical connector is disclosed in, for example, Japanese Patent Application Laid-Open Nos. 4-255678 and 5-217.
It is disclosed in Japanese Laid-Open Patent Publication No. 630, etc., and usually has a structure including an insulating housing, a plurality of terminals mounted in the insulating housing, and a metal shield attached to the outside of the insulating housing. There is. When a high-frequency voltage is applied to the terminal, a high-frequency signal leaking to the outside is dropped to the ground circuit via a metal shield. A capacitor is composed of a terminal, a metal shield, and a dielectric that constitutes an insulating housing between them.

[0003]

In the electrical connector having the above-described structure, when a high frequency signal flows to the ground circuit through the metal shield, a high frequency current passage locally formed in the metal shield. Acts as an antenna, and there is a possibility that a high-frequency signal may be erroneously transmitted from this antenna to a terminal near it. Usually, the ground terminals integrally provided on the metal shield are provided at both ends in the longitudinal direction of the electrical connector so as not to interfere with the solder tail of the terminal, and therefore the number of terminals is increased. Thus, it is expected that as the electrical connector grows in size, the antenna locally formed within the metallic shield becomes longer, increasing the risk of inducing false signals.

The present invention has been made in view of these problems, and an object thereof is to provide an electrical connector assembly having a ground function enhanced so that a high frequency signal is not transmitted by mistake.

[0005]

SUMMARY OF THE INVENTION The ground-reinforced electrical connector assembly of the present invention, which has been made based on the above object, is an electrical connector assembly comprising a plug connector and a receptacle connector, wherein a plurality of terminals of the receptacle connector are provided. Among them, at least one terminal is used as a ground terminal, and the ground terminal is brought into contact with the metal shield of the plug connector.

That is, the ground-reinforced electrical connector assembly of the present invention comprises an insulating housing, a plug connector having a plurality of terminals mounted on the insulating housing, and an insulating housing of the plug connector, which is formed so as to be capable of fitting with each other. In an electrical connector assembly comprising a housing and a receptacle connector attached to the insulating housing and having a plurality of terminals for engaging terminals of the plug connector, a metal shield is provided on the outside of the insulating housing of the plug connector. At least one terminal of the plurality of terminals mounted on the insulating housing of the receptacle connector is brought into contact with the shield provided on the plug connector so as to be electrically conducted. And the grand strength Is the type electrical connector assembly.

An extension lead is formed on a shield provided on the plug connector, and the extension lead is arranged in an aligned portion of the terminal of the plug connector so as to be able to contact the terminal of the receptacle connector or provided on the plug connector. A protrusion that penetrates the insulating housing of the plug connector and protrudes to the aligned portion of the terminal may be formed on a part of the shield, and the protrusion may be configured to be capable of contacting the terminal of the receptacle connector.

The receptacle connector may or may not be provided with a metallic shield. When the shield is provided, it is brought into contact with the shield of the plug connector so as to be electrically conducted. Ground terminals are provided on these metal shields, but in addition to being provided outside (longitudinal direction) of the solder tails of the terminals, it is also desirable to provide ground terminals that are aligned between the solder tails of the terminals. desirable.

[0009]

According to the ground-reinforced electric connector assembly of the present invention, the terminal on the receptacle connector side, which is brought into contact with the shield on the plug connector side to electrically conduct, is used as a ground terminal. It is possible to drop the high-frequency current induced in the shield of the device into the ground circuit in the shortest possible distance. As a result, the action of the antenna locally formed on the shield can be reduced and the ground function of the electrical connector assembly can be enhanced.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 3 show an electric connector assembly 1 according to a first embodiment of the present invention. The electric connector assembly 1 comprises a plug connector 2 and a receptacle connector 3. The plug connector 2 includes an elongated insulating housing 4 and an insulating housing 4
A plurality of terminals 5 mounted on the
And a metal shield 6 formed so as to closely adhere to and cover the outer wall of the. The terminals 5 are mounted along the longitudinal direction of the insulating housing 4 so as to be aligned at a predetermined pitch, and the terminals 5 are formed along the inner wall of the fitting portion 7 formed in the insulating housing 4. A contact portion 5a is made to face the groove 8 and a solder tail 5b formed so as to be surface-mountable on a printed circuit board or the like is aligned on both sides of the bottom portion of the insulating housing 4.

As described above, at least one (every several terminals in the embodiment) terminal 5 among the plurality of terminals 5 aligned and mounted on the insulating housing 4 is eliminated, so that an empty recess is formed. An extension lead 9 formed integrally with the shield 6 is arranged in the groove 8. The extension lead 9 corresponds to the hollow recessed groove 8 and the shield 6
Is provided so as to extend in a U-shape from the edge 10a of the side wall 10 of the insulating housing 4, extends into the fitting portion 7 beyond the fitting end 4a of the insulating housing 4, and fits in the recessed groove 8 to be 5
Together with the contact portion 5a, the terminal 15 of the receptacle connector 3 is aligned so as to be engageable.

The metal shield 6 has L-shaped attachment pieces 12 formed outward on both end walls 11 continuous with the side wall 10, and has long L-shaped grounds on both side walls 10. A plurality of terminals 13 are formed outward. The ground terminals 13 are formed so as to correspond to the positions where the terminals 5 are not attached, and are arranged between the solder tails 5b of the terminals 5 aligned on both sides of the bottom of the insulating housing 4.

The receptacle connector 3 has an elongated insulating housing 14 formed so as to be able to fit with the insulating housing 4 of the plug connector 2, and the insulating housing 14
And a metal shield 16 arranged outside the insulating housing 14. The terminals 15 are mounted along the longitudinal direction of the insulating housing 14 so as to be aligned with the terminals 5 of the plug connector 2 at the same pitch. This terminal 15 also has a contact portion 15a formed at one end and a solder tail 15b formed at the other end. And the contact portion 15
a faces a recessed groove 18 formed in the fitting portion 17 of the insulating housing 14, and can be engaged with the contact portion 5a of the terminal 5 of the plug connector 2. The tail portion 15b has a surface-mountable shape and is arranged on both sides of the bottom portion of the insulating housing 14.

Like the shield 6 of the plug connector 2, the metal shield 16 has a side wall 19 and an end wall 20. The fitting portion 17 of the receptacle connector 3 is configured so that the fitting groove 21 is formed in cooperation with the insulating housing 14 along the inside of the side wall 19 and the end wall 20. Further, the side wall 19 and the end wall 20 are formed with the engagement piece 22 biased toward the fitting groove 21 side by the U-shaped cut groove, and the shield 6 on the plug connector 2 side is formed.
The side wall 10 and the end wall 11 are elastically engaged with each other so that they can be electrically conducted. Furthermore, the L-shaped attachment piece 23
Is formed outward on the end wall 20, and an L-shaped ground terminal 24 is formed outward at the end of the side wall 19.

The electrical connector assembly 1 of the above embodiment
Of the plurality of terminals 15 of the receptacle connector 3 is a terminal (the terminal 15 on the left side in FIG. 1) which is electrically connected by engaging with an extension lead 9 extending from the shield 6 of the plug connector 2. Use as a terminal. By doing this,
The high-frequency current induced in the shield 6 of the plug connector 2 can be dropped to the ground circuit via the ground terminal (terminal 15) with a circuit as short as possible. As a result, the antenna action due to conduction of the high-frequency current induced in the shield 5 can be almost eliminated, and erroneous signal transmission can be prevented.

In the case of the electrical connector assembly 1 of the embodiment, since the ground terminal 13 is formed corresponding to the position of the extension lead 9 of the shield 5, the high frequency current induced through the ground terminal 13 is generated. It may fall into the ground circuit. In addition, the engagement piece 22 formed on the shield 16 of the receptacle connector 3 has the plug connector 2
Since the shield 6 is elastically engaged with and electrically connected to the shield 6, the induced high frequency current may fall into the ground circuit via the shield 16 of the receptacle connector 3. That is, the electrical connector assembly 1 of the embodiment
Is a mode in which the ground function is most strengthened. However, since the extension lead 9 can be provided at the position closest to the position where the high frequency current is induced in the shield 6, the terminal 1 engaged with the extension lead 9 is provided.
The high-frequency current induced via 6 is dropped to the ground circuit, which is highly effective and reliable in enhancing the ground function. Therefore, the ground terminals 13 and 24 provided on the shields 6 and 16 may not be provided in some cases. In addition, the engagement piece 22 formed so as to electrically connect the shields 6 and 16 may not be provided. Furthermore, the shield 6 may not be provided in some cases.

4 to 6 show the second, third and fourth aspects of the present invention.
3 shows three examples. The same members as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted. The difference between any of the embodiments is that the plug connector 2
Instead of forming the extension lead 9 on the shield 6, the protrusion 25 is formed on the side wall 10 of the shield 6.
The projecting portion 25 is made to face a portion where the contact portion 5a of the terminal 5 is aligned through a hole 26 provided through the insulating housing 4, and engages with the terminal 15 of the receptacle connector 3 to electrically conduct. I can do it. Further, in the second and third embodiments, the receptacle 16 is not provided with the receptacle connector 3.

In the second to fourth embodiments as well, similar to the first embodiment, the high frequency current induced in the shield 6 of the plug connector 2 is passed through the shortest possible circuit, and the high frequency current of the receptacle connector 3 is detected. The terminal 15 can be dropped to the ground circuit via the ground terminal. Regardless of the presence or absence of the shield 16, the ground function can be enhanced.

[0020]

As described above, according to the electrical connector assembly of the present invention, at least one of the terminals of the receptacle connector serves as a ground terminal and is capable of inducing a high frequency current induced in the shield of the plug connector. The effect of the antenna can be reduced by dropping it to the ground circuit with an extremely short circuit to reduce the effect of the high-frequency current, so it is possible to provide an electrical connector assembly that enhances the ground function and prevents erroneous signals from being transmitted. There is.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a first embodiment of the present invention.

FIG. 2 is a perspective view showing an outline of a part of the plug connector of the first embodiment.

FIG. 3 is a perspective view showing the outline of a part of the receptacle connector of the first embodiment.

FIG. 4 is a sectional view of a second embodiment of the present invention.

FIG. 5 is a sectional view of a third embodiment of the present invention.

FIG. 6 is a sectional view of a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Electrical Connector Assembly 2 Plug Connector 3 Receptacle Connector 4, 14 Insulation Housing 4a Mating End 5, 15 Terminal 5a, 15a Contact Part 5b, 15b Solder Tail 6, 16 Shield 7, 17 Fitting Part 8, 18 Recessed Groove 9 Extension lead 10, 19 Shield side wall 11, 20 Shield end wall 12, 23 Mounting piece 13, 24 Ground terminal 21 Fitting groove 22 Engaging piece 25 Projection portion 26 Hole

Claims (5)

[Claims] 1. An insulating housing 4, a plug connector 2 provided with a plurality of terminals 5 mounted on the insulating housing 4, and an insulating housing 14 formed so that the insulating housing 4 of the plug connector 2 can be fitted to each other. An electrical connector assembly (1), which is attached to the insulating housing (14) and comprises a receptacle connector (3) having a plurality of terminals (15) for engaging the terminals (5) of the plug connector (2), is provided outside the insulating housing (4) of the plug connector (2). A metal shield 6 is provided, and the receptacle connector 3
Terminals 1 mounted in the insulating housing 14 of
A ground-reinforced electrical connector assembly, characterized in that at least one of the terminals (5) is in contact with the shield (6) provided on the plug connector (2) so as to be electrically conducted. 2. The extension lead 9 is formed on the shield 6 provided on the plug connector 2, and the extension lead 9 is formed.
2. The ground-reinforced electrical connector assembly according to claim 1, wherein the plug connector 2 is arranged in an aligned portion of the terminal 5. 3. A part of a shield (6) provided on the plug connector (2) is formed with a projecting part (25) penetrating the insulating housing (4) of the plug connector (2) and projecting to an alignment part of the terminal (5). The ground-reinforced electric connector assembly according to claim 1, wherein 25 is abuttable with the terminal 15 of the receptacle connector 3. 4. A metallic shield 16 is provided outside the insulating housing 14 of the receptacle connector 3,
4. The shield 16 and the shield 6 of the plug connector 2 are in contact with each other to establish electrical conduction.
2. The ground-reinforced electric connector assembly according to any one of 1. 5. The shields (6, 16) made of metal are provided with ground terminals (13, 24) aligned between the solder tails (5b, 15b) of the terminals (5, 15), respectively. Ground enhanced electrical connector assembly.