JPH0869838A - Connector - Google Patents

Abstract

PURPOSE: To downsize a connector by simplification of a structure of an insulating housing and a shielding shell, and facilitate assembling work by this in the connector in which the shielding shell and retention legs are integrally formed to reduce the number of part items as well as to reduce a resistance value of electric continuity of ground. CONSTITUTION: A connector is provided with an insulating housing 1, contacts 2 fixed and held at a prescribed pitch in the insulating housing and a shielding shell 3 to be fixed to and held by a front surface of the insulating housing. The shielding shell 3 is molded on a main body part 31 and both sides out of a metallic material so as to have flange parts 32. Bending parts 36 are formed from end parts of the flange parts so as to backward extend by coming into contact with side surfaces of the insulating housing 1, and retention legs 37 are integrally formed in the printed circuit board installing direction in the bending parts, and locking parts 11 and 13 to lock and hold the bending parts and the retention legs are formed in a side surface part of the insulating housing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector, and more particularly to a connector on the electronic equipment main body side for connecting an electronic equipment main body such as a personal computer or a word processor to an external device,
As a measure against I, the present invention relates to a connector of a type in which a shield shell for electrically connecting with a mating connector is integrally formed with a retention leg for connecting and fixing to a printed circuit board.

[0002]

2. Description of the Related Art Conventionally, an electronic device main body side connector for connecting an electronic device main body such as a personal computer or a word processor to an external device is provided on a side surface portion of the electronic device main body B.
In addition, in order to prevent EMI, this type of connector is provided with a shield shell that electrically connects with the mating connector, but with a retention leg that conducts and fixes the shield shell and the printed circuit board. If it is manufactured as a separate component, the number of man-hours for assembling the connector increases, the reliability of the ground connection to the board is low, and the resistance value increases.

Therefore, there has been proposed a connector in which the shield shell and the retention leg are integrally formed. An example of a connector in which the shield shell and the retention leg are integrally manufactured is disclosed in Japanese Utility Model Publication No. 3-39001. As shown in FIG. 5, the connector disclosed herein includes an insulating housing 81 having a lower surface installed on a printed circuit board in an electronic device body and a fitting surface substantially perpendicular to the lower surface, a shield shell 83, and In the connector having a contact fixed to the insulating housing, the housing 81 is formed with two slots 84 extending rearward from the fitting surface and a receiving groove 85 communicating with the slots 84 and opening to the lower surface. . The shield shell 83 is formed of an integral metal member, and a main body that covers at least a part of the fitting surface of the insulating housing 81,
The main body includes at least two bent portions 86 that are bent substantially at right angles to the main body, and a retention leg 87 that is an elastic mounting member that is bent at substantially right angles from each of the bent portions 86.
Then, the bent portion 86 and the retention leg 87
Are respectively inserted into the slots 84 and the receiving grooves 85, and the retention legs 87 are received and held in a state of protruding from the receiving grooves 85.

[0004]

However, in the conventional connector in which the shield shell and the retention leg are integrally formed as disclosed in Japanese Utility Model Publication No. 3-39901, the shape is complicated, Moreover, since the bent portion 86 is bent at a right angle in the horizontal direction from the bottom side of the shield shell 83, the width dimension a of the bent portion 86 is required for the shield shell, and the dimension of the metal plate in the pitch direction (longitudinal direction). Has become longer, the external dimensions of the connector have become larger, and it has been against the demand for space saving. In addition, in this connector, the slot 84 and the receiving groove 85 must be formed on the side of the insulating housing 81, and the manufacturing cost of the insulating housing 81 is high, and the assembling work is complicated. It was.

The present invention has been proposed in view of the above-mentioned problems of the prior art, and a shield shell and a retention leg capable of reducing the number of components and the resistance value of electrical conduction of the ground are integrally formed. It is an object of the present invention to simplify the structure of the insulating housing and the shield shell and to facilitate the assembling work by the connector, and to downsize the connector.

[0006]

SUMMARY OF THE INVENTION The present invention is a printed circuit board including an insulating housing, contacts fixedly held in the insulating housing at a predetermined pitch, and a shield shell fixedly held on the front surface of the insulating housing. In the shielded electrical connector for mounting, the shield shell is formed of a metal material so as to have a main body part and flange parts on both sides, and the ends of both flange parts contact the side surface of the insulating housing and face backward. A bent portion is formed so as to extend at a substantially right angle to the main body so that the bent portion is integrally formed with a retention leg in the printed circuit board mounting direction. It is possible to obtain a connector characterized in that the bent portion and the retaining portion for retaining the retention leg are formed on the side surface portion of the housing. That.

[0007]

According to the present invention having the above-described structure, when the bent portion having the retention leg formed thereon is applied to the side surface of the insulating housing so that the bent portion is attached to the insulating housing, the shield shell insulates the bent portion and the retention leg from each other. The locking portion formed on the housing holds the insulating housing in a locked state. As a result, the retention leg can be securely fixed to the through hole of the printed circuit board. By attaching the retention leg to the through hole, the shield shell is electrically connected to the ground of the printed board. At this time, the shield shell body and the retention leg are integrally molded, and since the structure of the attachment part of the shield shell to the insulating housing is simple, the shield shell body part and the retention leg are correspondingly The distance can be shortened and the resistance can be reduced.

[0008]

1 is a perspective view showing an exploded state of an insulating housing 1 and a shield shell 3 in a first embodiment of the present invention.

As shown in FIG. 1, the insulating housing 1 has a fitting portion 10 on the connection side with the mating connector, and the contact portion of the contact fixedly held at a predetermined pitch in the fitting portion 10. Is located. On both side surfaces of the insulating housing 1, a first locking portion 11 that locks the upper and lower edges of a bent portion 36 of the shield shell 3 described later in a sandwiched state and a second locking portion that locks the upper edge of the retention leg 37, respectively. Locking portion 13 is formed. The first locking portion 11 holds the bent portion 36 and locks the front side edge of the retention leg 37 to prevent the shield shell 3 from coming off the insulating housing 1. Further, the second locking portion 13 is locked to the upper edge of the retention leg 37, and when the retention leg 37 is inserted into the through hole of the printed circuit board,
This is to prevent the retention leg 37 from coming off the insulating housing 1.

The shield shell 3 is formed of a conductive metal material, and has a fitting portion 10 of the insulating housing 1.
A shield shell body 31 that covers the periphery of the shield shell body 31 and flange portions 32 are provided on both sides of the shield shell body 31.

A bent portion 36, which is bent at a substantially right angle in the fitting direction, is formed from the end of the flange portion 32 so as to extend toward the side surface portion of the insulating housing 1. A retention leg 37 is formed at the tip of the bent portion 36 so as to be fitted into the through hole of the printed circuit board. The retention leg 37 has a slit formed in the vertical direction so as to have elasticity, and the tip end thereof has a hook shape so as to be locked to the printed board.

FIG. 2 is a perspective view showing a state in which the insulating housing 1 and the shield shell 3 are assembled to a printed circuit board. As you can see from this figure, the bent part 3
6 is locked while being sandwiched by a first locking portion 11 formed on the side surface of the insulating housing 1, and also locked at the front edge of the retention leg 37. . Thereby, as described above, the shield shell 3 is prevented from coming off the insulating housing 1 after the shield shell 3 is assembled to the insulating housing 1.

The upper edge 37 of the retention leg 37
Since b is locked to the second locking portion 13, when the retention leg 37 is inserted into the through hole of the printed circuit board P, the retention leg 37 is prevented from coming off the insulating housing 1. It is supposed to do.
In this embodiment, locking projections 18 are formed on the upper and lower surfaces of the insulating housing 1, while the shield shell 3
An engagement window portion 39 that engages with the projection 18 is formed on the side, and the two are engaged with each other to secure and hold the shield shell 3 with respect to the insulating housing 1.

FIG. 3 shows another embodiment of the present invention. The lateral dimension of the flange portion 33 of the shield shell 3 is the flange portion 3 of the embodiment shown in FIGS.
It is designed smaller than the one. That is, as shown in FIG. 1, the length of the flange portion 31 of the shield shell 3 of the connector of the first embodiment is b, while the length of the flange portion 33 of the second embodiment is c. It's getting shorter. Thus, the reason why the length of the flange portion can be designed to be short is that the bent portion 36 is bent substantially at right angles from both end sides of the flange portions 31 and 33, and the bent portion of the conventional example shown in FIG. This is because unlike the reference numeral 86, the flange portion is not bent from the bottom side toward the insulating housing side. That is, in the prior art, the flange portion needs to have a dimension larger than the width dimension a of the bent portion 86, whereas in the present invention, it is not necessary to secure such dimension a.

[0015]

As described above, according to the present invention, the shield shell has the main body, the flange portion, the bent portion, and the retention leg which are integrally formed, and moreover, the insulating housing is formed by the pair of retention legs. Since it suffices to just assemble them in such a manner that they are sandwiched, the assembly work can be facilitated.

Further, since the bent portion connecting the flange portion and the retention leg is bent from both ends of the flange portion, the horizontal length of the flange portion can be designed to be short, which contributes to downsizing of the connector.

Further, in the present invention, since the structure for attaching the shield shell to the insulating housing is simple,
Since the shape is simplified by that amount, the resistance value of electrical conduction can be suppressed to be low, and the shield effect can be enhanced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an exploded state of an insulating housing and a shield shell according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing an assembled state of the insulating housing and the shield shell in the first embodiment of the present invention.

FIG. 3 is a perspective view showing an assembled state of an insulating housing and a shield shell according to a second embodiment of the present invention.

FIG. 4 is a perspective view showing an example of a state in which the connector of the present invention is attached to an electronic device such as a computer.

FIG. 5 is a perspective view seen from a bottom surface side showing an exploded state of an insulating housing and a shield shell of a conventional connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulation housing 2 Contact 3 Shield shell 10 Fitting part 11 First locking part 13 Second locking part 31 Shield shell main body part 32 Flange part 33 Flange part 36 Bent part 37 Retention leg

Claims (1)

[Claims] 1. A shielded electrical connector for mounting a printed circuit board, comprising: an insulating housing; contacts fixedly held in the insulating housing at a predetermined pitch; and a shield shell fixedly held on the front surface of the insulating housing. The shell is formed of a metal material so that it has a main body and flanges on both sides, and the ends of both flanges contact the side surface of the insulating housing and extend toward the rear side of the main body. A bent portion bent substantially at a right angle to the bent portion is formed, and a retention leg is integrally formed in the bent portion toward the printed circuit board mounting direction, and the bent portion is formed on the side surface of the insulating housing. A connector, in which a locking portion that locks and holds the locking portion and the retention leg is formed.