JP2926209B2 - 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 connector, and more particularly to a connector for connecting an electronic device body such as a personal computer or a word processor to an external device.
The present invention relates to a connector of a type in which a shield shell for establishing electrical continuity with a mating connector is integrally formed with a retention leg for conducting and fixing to a printed circuit board as a measure I.

[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 of the electronic device main body B.
This type of connector is provided with a shield shell that establishes electrical continuity with the mating connector for the purpose of EMI countermeasures. However, a retention leg that conducts and secures the shield shell and the printed board is provided. Is manufactured as a separate part, the man-hour for assembling the connector increases, the reliability of ground connection to the substrate is low, and the resistance value increases.

For this reason, a connector has been proposed in which a shield shell and a retention leg are integrally formed. As a connector in which the shield shell and the retention leg are integrally formed, for example, there is a connector disclosed in Japanese Utility Model Publication No. 3-39901. 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 main body and a fitting surface substantially perpendicular to the lower surface, a shield shell 83, In a connector having contacts fixed to an insulating housing, the housing 81 is formed with two slots 84 extending rearward from a fitting surface, and a receiving groove 85 communicating with the slots 84 and opening to the lower surface. . A shield shell 83 formed of an integral metal member and covering at least a part of a fitting surface of the insulating housing 81;
It has at least two bent portions 86 that bend at substantially right angles to the main body, and retention legs 87 that are elastic mounting members that are 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 connector in which the conventional shield shell and the retention leg are integrally formed as disclosed in Japanese Utility Model Publication No. 3-39901 described above, 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 shield shell needs a width a of the bent portion 86, and the dimension in the pitch direction (longitudinal direction) of the metal plate. And the external dimensions of the connector have become larger, which is contrary to the demand for space saving. Further, in this connector, the slot 84 and the receiving groove 85 must be formed on the insulating housing 81 side, which not only increases the manufacturing cost of the insulating housing 81 but also complicates the assembly work. Had become.

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, which can reduce the number of parts and the resistance value of the 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, and to downsize the connector.

[0006]

According to the present invention, there is provided an insulating housing, a contact fixedly held at a predetermined pitch in the insulating housing, and a shield shell fixedly held on a front surface of the insulating housing. In shielded electrical connectors for mounting printed circuit boards, the shield shell is
It is molded from a metal material so as to have a main body portion and flange portions provided on both sides of the main body portion in the longitudinal direction of the shield shell, and from the longitudinal end portions of both flange portions, respectively, A bent portion bent substantially at right angles to the main body portion is formed so as to abut on the side surface of the insulating housing and extend rearward, and the bent portion is formed in the printed board mounting direction. A connector can be obtained in which a retention leg is integrally formed, and a bent portion and a locking portion for locking and holding the retention leg are formed on a side surface of the insulating housing. Here, the locking portion includes a first locking portion for locking the upper and lower edges of the bent portion in a sandwiched state, and a second locking portion for locking the upper edge of the retention leg. It is good.

[0007]

According to the present invention having the above construction, when the bent portion on which the retention leg is formed is abutted against the side surface of the insulating housing and attached to the insulating housing, the shield shell is insulated from the bent portion and the retention leg. The insulating housing is held in a locked state by a locking portion formed in the housing. Thereby, the fixed attachment of the retention leg to the through hole of the printed circuit board can be reliably performed. By attaching the retention leg to the through hole, the shield shell is electrically connected to the ground of the printed circuit board. At this time, the shield shell body and the retention leg are integrally formed, and the structure of the mounting part of the shield shell to the insulating housing is simplified, so that the shield shell body to the retention leg Can be shortened, and the resistance can be reduced.

[0008]

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

As shown in FIG. 1, the insulating housing 1 has a fitting portion 10 on a connection side with a mating connector, and a contact portion of a contact fixed and 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 for locking the upper and lower edges of a bent portion 36 of the shield shell 3, which will be described later, and a second locking portion for locking the upper edge of the retention leg 37. Are formed. The first engaging portion 11 sandwiches the bent portion 36 and engages with 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 board,
This is for preventing the retention leg 37 from coming off the insulating housing 1.

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

From the end of the flange portion 32, a bent portion 36 bent at a substantially right angle in the fitting direction is formed so as to extend toward the side surface of the insulating housing 1. At the tip of the bent portion 36, a retention leg 37 to be inserted into a through hole of the printed board is formed. The retention leg 37 has a slit formed in a vertical direction so as to have elasticity, and has a hook-like end that is to be engaged with the printed circuit board.

FIG. 2 is a perspective view showing a state in which the insulated housing 1 and the shield shell 3 are assembled on a printed circuit board. As can be seen from FIG.
6 is locked while being sandwiched between first locking portions 11 formed on the side surface of the insulating housing 1 and also locked to the front edge of the retention leg 37. . This prevents the shield shell 3 from being detached from the insulating housing 1 after the shield shell 3 is assembled to the insulating housing 1 as described above.

The upper edge 37 of the retention leg 37
a is locked by the second locking portion 13 and prevents the retention leg 37 from coming off the insulating housing 1 when the retention leg 37 is inserted into the through hole of the printed circuit board P. It is something to do.
In this embodiment, locking projections 18 are formed on the upper and lower surfaces of the insulating housing 1, respectively.
On the side, an engaging window 38 is formed to be engaged with the locking projection 18, and by engaging the both, a secure holding of the shield shell 3 to the insulating housing 1 is ensured.

FIG. 3 shows another embodiment of the present invention, in which the horizontal dimension of the flange portion 33 of the shield shell 3 is the same as that of the embodiment shown in FIGS.
It is designed to be smaller than the two. That is, as shown in FIG. 1, the length of the flange portion 32 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 is getting shorter. The reason why the length of the flange portion can be designed to be short in this manner is that the bent portion 36 is bent substantially at right angles from both ends of the flange portions 32 and 33, and the bent portion of the conventional example shown in FIG. This is because, as in 86, it is not bent from the bottom side of the flange portion toward the insulating housing side. That is, while the conventional technology requires the flange portion to have a size larger than the width dimension a of the bent portion 86, the present invention does not need to ensure the dimension a.

[0015]

As described above, according to the present invention, the shield shell comprises the main body, the flange portion, the bent portion, and the retention leg integrally, and furthermore, the insulating housing is formed by the pair of retention legs. Since it is only necessary to assemble with the appearance of being clamped, the assembling 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 much, the resistance value of electrical conduction can be suppressed low, and the shielding effect can be enhanced.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating 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 showing a disassembled state of an insulating housing and a shield shell of a conventional connector as viewed from a bottom surface side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulated 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 Bend part 37 Retention leg

Claims (2)

(57) [Claims] 1. A shielded electrical connector for mounting a printed circuit board, comprising: an insulating housing; contacts fixedly held at a predetermined pitch in the insulating housing; and a shield shell fixedly held on a front surface of the insulating housing. The shell is formed of a metal material so as to have a main body portion and flange portions provided on both sides of the main body portion in the longitudinal direction of the shield shell. A bent portion bent substantially at right angles to the main body portion is formed so as to abut against the side surface of the insulating housing and extend rearward, and the bent portion has a printed board mounting direction. The retention leg is formed integrally with the bent part and the retention leg on the side of the insulating housing. Connector, characterized in that the locking portion is formed that. 2. The connector according to claim 1, wherein the locking portion locks a first locking portion that locks upper and lower edges of the bent portion in a sandwiched state, and locks an upper edge of the retention leg. And a second locking portion.