JPH09327989A - Card-like electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a card-like electronic device capable of being manufactured with ease and ensuring readily the strength of the frame. SOLUTION: The PC card is constituted of a first integral member formed by securing a ground plate 3 on one end of a frame 1 and a second integral member formed by a front connector 2 to one end of a printed circuit substrate 4. A plurality of grounding terminals set on the ground plate 3 are soldered on ground parts 41 on the printed circuit substrate 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card-shaped electronic device such as a PC card, and more particularly to a front connector portion for connecting a card-shaped electronic device body for realizing a predetermined function to an external electronic device. It is about improvement.

[0002]

2. Description of the Related Art For example, as a card-shaped electronic device such as a PC card used as an interface with an external device in a computer, those shown in FIGS. 6 to 9 (conventional example) can be cited.

As shown in FIG. 6, a conventional card-shaped electronic device of this type has a frame 1 located on the outer surface thereof for accommodating and holding an internal card-shaped electronic device body (not shown). It is composed of a front connector 2 attached to one end 11 of the frame 1.

The front connector 2 is shown in FIGS.
As will be understood with further reference to FIG.
And a large number of signal contact terminals 22 arranged side by side on the insulator 21.

The frame 1 is usually made of synthetic resin.

Further, the card-shaped electronic equipment body is usually
It is composed of a printed circuit board on which an IC or the like for realizing a predetermined function is mounted.

In addition, in order to prevent EMI (electromagnetic interference), a ground plate 3 made of a conductive metal plate is integrally formed on the front connector 2, especially around the signal contact terminal 22. It is installed.

Further, the grounding plate 3 is provided with a grounding terminal 31, and the grounding terminal 31 is connected to the ground of the printed circuit board (card-shaped electronic equipment main body) 4 as shown in FIG. 9, for example. It is connected to the portion 41 by soldering or the like. In addition, a plurality of ground terminals 31 are usually arranged side by side in the longitudinal direction of the front connector 2.

[0009]

By the way, in the process of manufacturing this kind of card-shaped electronic device, in order to make a plurality of ground terminals arranged in parallel contact with the ground part on the card-shaped electronic device body uniformly. Also, in order to uniformly connect the signal contact terminals to the corresponding terminal portions of the card-shaped electronic device body, the flatness of these terminals (terminal flatness) is important.

That is, the terminal flatness of the signal contact terminal and the terminal flatness of the ground terminal are required respectively.

However, in the case of the above-mentioned conventional card-shaped electronic equipment, since the ground plate is attached to the front connector and is incorporated in the frame, the front flatness is provided in addition to the above two terminal flatness. It is necessary to secure the terminal flatness between the signal contact terminal and the ground terminal when attaching the connector and the ground plate. Therefore, it is difficult to secure the terminal flatness,
There is a problem that it takes time to assemble with high accuracy.

Further, in this type of card-shaped electronic equipment, the frame is usually made of a synthetic resin molding, and it is preferable to increase the thickness in order to secure its strength. However, there is a limit to increasing the thickness of the card-shaped electronic device defined by the above, and thus it is difficult to secure the strength of the frame.

Therefore, it is an object of the present invention to provide a card-shaped electronic device which is easy to manufacture and whose frame strength can be easily secured.

[0014]

SUMMARY OF THE INVENTION A card-shaped electronic device according to the present invention comprises a frame for accommodating and supporting the card-shaped electronic device main body, and a corresponding contact point attached to one end of the frame for the card-shaped electronic device main body. A card-shaped electronic device including a front connector connected to the card and a ground plate that covers at least a part of an outer surface of the front connector and has a plurality of ground terminals to be soldered to the card-shaped electronic device body. In the above, the ground plate is integrally attached to the frame in advance.

Further, the card-shaped electronic equipment of the present invention has a first structure in which a ground plate is attached to one end of a frame.
And the second integrated product configured by attaching a front connector to one end of the card-shaped electronic device body, and the ground plate is soldered to the card-shaped electronic device body. A plurality of ground terminals are formed, and at the time of the combination, at least a part of the outer surface of the front connector is covered with the ground plate.

In the above structure, the ground plate is preferably integrally formed with the frame. Further, in a preferred embodiment, the ground plate is attached to the frame so as to bridge the opening formed at one end of the frame.

By attaching the ground plate to the frame as described above, it is possible to easily secure the strength of the frame and improve the strength of the entire card-shaped electronic device. In addition, when the card-shaped electronic device is configured by combining the first integrated product in which the ground plate and the frame are attached and the second integrated product in which the front connector is attached to the card-shaped electronic device body, As for the terminal flatness, the terminal accuracy of the front connector terminal (signal contact terminal) and the ground terminal of the ground plate may be ensured only for each, and the assembly with high accuracy can be easily performed. Further, by integrally forming the ground plate on the frame, the number of assembling steps can be reduced.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the card-like electronic device of the present invention will be described below. In the following description, an example in which a PC card is used as the card-like electronic device and a printed circuit board is used as the card-like electronic device body, but the present invention is not limited to this.

FIGS. 1 to 3 show an integrally molded product of a frame 1 and a ground plate 3 which constitute a part of the PC card of the embodiment. The frame 1 and the ground plate 3 are integrally molded by using a known molding technique. The frame 1 is made of synthetic resin and has a substantially U shape, and has an opening 12 at one end 11.

The ground plate 3 is a rectangular plate made of a conductive metal plate and has a plurality of ground terminals 31 arranged in parallel. The tip of the ground terminal 31 projects inside the frame 1. Both ends of the ground plate 3 in the longitudinal direction are integrally fixed to the opening 12 of the frame 1. In this case, as shown in FIG. 2, hook-shaped bent portions 32 are formed at both ends of the ground plate 3,
The bent portion 32 makes the fixation between the ground plate 3 and the frame 3 stronger.

Further, FIG. 4 is an explanatory view for making an integrated product of the front connector 2 and the printed circuit board 4. The front connector 2 includes an insulating insulator 21 made of synthetic resin or the like and an insulator 21 as in the conventional case.
A large number of metal signal contact terminals 22 arranged side by side.

Further, the printed circuit board 4 is mounted with an IC including a logic circuit for realizing a predetermined function (for example, a function as an interface). Also,
An opening 42 is formed at one end of the printed circuit board 4. The signal contact portion 4 is provided near the opening 42.
3, and the ground portion 41 (see FIG. 5). Then, the front connector 2 is housed in the opening 42 of the printed circuit board 4. At that time, the signal contact 22 of the front connector 2 is connected to the signal contact portion 4 on the printed circuit board 4.
Soldered to 3.

Next, the frame 1 and the ground plate 3 of FIG. 1 manufactured as described above are integrated (first integrated product).
4 is combined with an integrated product (second integrated product) of the front connector 2 and the printed circuit board 4 of FIG. 4 to assemble the card-shaped electronic device of the embodiment. This state is shown in FIG.
That is, that is, that is, the second integrated product is placed on the above-mentioned first integrated product, and then the ground terminal 31 of the ground plate 3 is attached to the ground portion 41 on the printed board 4.
Is soldered.

[0024]

As described above, according to the present invention, it is possible to provide a card-shaped electronic device which is easy to manufacture and whose frame strength can be secured easily. Further, since the work of assembling the ground plate in the front connector is unnecessary, there is an effect that the assembly cost can be reduced.

[Brief description of drawings]

1A and 1B are views of an integrated product of a frame and a ground plate that constitute a card-shaped electronic device according to an embodiment of the present invention, in which FIG. 1A is a plan view, FIG. 1B is a side view, and FIG. is there.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a perspective view of the integrated product of FIG.

FIG. 4 is an explanatory diagram of an integrated product configured by soldering and attaching a front connector to a card-shaped electronic device body.

5 is an explanatory diagram showing a procedure for assembling the card-shaped electronic device of the embodiment by combining the integrated product of FIG. 4 and the integrated product of FIG.

FIG. 6 is an exploded view of a conventional card connector.

FIG. 7 is a front view of a front connector of the card connector of FIG.

FIG. 8 is an enlarged view of a main part of a front connector that constitutes a conventional card connector.

FIG. 9 is an explanatory diagram of a conventional method for assembling a card connector.

[Explanation of symbols]

 1 frame 2 front connector 22 signal contact terminal 3 ground plate 31 ground terminal 4 printed circuit board

Claims (4)

[Claims] 1. A frame for accommodating and supporting a card-shaped electronic device main body, a front connector attached to one end of the frame and connected to a corresponding contact of the card-shaped electronic device main body, and an outer surface of the front connector. A card-shaped electronic device that covers at least a part of the card-shaped electronic device and has a ground plate having a plurality of ground terminals to be soldered to the card-shaped electronic device body, wherein the ground plate is preliminarily integrally attached to the frame. A card-shaped electronic device characterized by being provided. 2. A first integrated product formed by attaching a ground plate to one end of a frame, and a second integrated product formed by attaching a front connector to one end of a card-like electronic device body. A plurality of ground terminals to be soldered to the card-shaped electronic device body are formed on the ground plate, and at least a part of the outer surface of the front connector is covered with the ground plate during the combination. A card-shaped electronic device characterized by being used. 3. The card-shaped electronic device according to claim 1, wherein the ground plate is attached to the frame so as to bridge an opening formed in the one end of the frame. 4. The card-shaped electronic device according to claim 1, wherein the ground plate is formed integrally with the frame.