JP3126351B2 - Connector and electronic card using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic card such as a memory card and a communication card and a connector used for the card, and more particularly to a structure for countermeasures against such static electricity.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is an exploded perspective view of a memory card according to a conventional example described in Japanese Unexamined Patent Application Publication No. 8 or JP-A-4-10295.
This memory card is a two-piece type using a connector, 1 is a printed board, 2 is an IC chip mounted on the printed board 1, 3 is a connector having 36 to 80 pins, and one end of the printed board 1 It is attached to.

[0003] Reference numeral 4 denotes a metal upper name plate whose periphery is framed by a resin frame 5, and 6 denotes a metal lower name plate. A memory card is configured. Note that the frame 5 has a function of supporting the printed board 1 and the connector 3.

Incidentally, in such a memory card, there is a possibility that the IC chip 2 mounted on the printed circuit board may be destroyed by an external static electricity and the memory function may be lost.

Conventionally, as a countermeasure against static electricity, a hole or a concave portion is provided in a ground terminal portion of the printed circuit board 1, and a coil spring 8 is projected from the upper surface and the lower surface of the printed circuit board 1 into the hole or the concave portion. In such a manner, a static electricity relief mechanism is employed in which the upper and lower projecting portions of the coil spring 8 are elastically contacted with the upper name plate 4 and the lower name plate 6.

[0006]

However, in the above-mentioned conventional apparatus, (1) a coil spring must be provided, the number of parts increases, and the assembling work becomes complicated. (2)
Coil springs become entangled during the assembly process, which hinders automatic loading. (3) Coil springs are likely to come off printed circuit boards (especially in the case of concave notches). (4) Coil springs are crushed (deformed) ) There are drawbacks such as that the contact with the nameplate tends to be uncertain.

In order to solve such a drawback, an IC card such as that disclosed in Japanese Patent Application Laid-Open No. 5-282507 has been proposed before the present invention. FIGS. 4 and 5 are diagrams for explaining this IC card.
Is a partially exploded perspective view of the IC card, and FIG. 5 is a sectional view of the IC card.

As shown in FIG. 5, the IC card has a frame 100, a pair of metal nameplates 101 and 102 for holding the frame 100, and an IC chip 103 which is disposed between the nameplates 101 and 102 and is spaced apart therefrom. And the like, and a connector 106 provided with a large number of connection terminals 105 disposed on the front side of the printed circuit board 104.

The four connection terminals 105 located on both sides of the large number of connection terminals 105 form an extension 105 a extending in the direction of the printed circuit board 104.
a are curved in the direction facing each other so that the printed circuit board 10
4 ground patterns 10 formed on both upper and lower surfaces
7 (see FIG. 4).
Is electrically connected to

Another connection terminal 108 paired with these four connection terminals 105 includes upper and lower nameplates 101, 1 respectively.
02, each having an extension 108a which extends in the direction of 02 and is curved upward and downward, respectively.
As shown in (1), they come into contact with the inner surfaces of the nameplates 101 and 102 and are electrically connected to the nameplates 101 and 102.

Therefore, when this IC card is inserted into a card reader / writer, the connector pin on the reader / writer side is raised,
It is inserted between the lower pair of connection terminals 105 and the connection terminals 108 and comes into contact with both. For this reason, the nameplates 101 and 102 are electrically connected to the ground pattern 107 via the connection terminals 108, the connector pins, and the connection terminals 105, so that countermeasures against static electricity are taken.

However, in this IC card, as is apparent from FIG. 4, the extension 108a of the connection terminal 108 is outside the connection terminal 105 and extends from the rear end of the connector 106 in a free and unstable state. Curved downward. Therefore, the extension portion 108a may come into contact with another member during the assembly of the IC card, or the extension portion 10a
8a are entangled and bent excessively inward,
Or it may be bent obliquely in the lateral direction.

If the extension 108a is bent inwardly and incorporated into an IC card, the contact with the nameplates 101 and 102 will not be made, or the contact will be unstable, and the reliability of the countermeasures against static electricity will be reduced. This poor contact
Even if the extension portion 108a is not excessively bent before being assembled, when the extension portion 108a is pressed and deformed by the nameplates 101 and 102, the extension portion 108a is free and the pressing deformation is not restricted by anyone. It may bend, resulting in poor contact.

When the extension 108a bends obliquely and laterally, it comes into contact with other connection terminals 105 and causes various troubles. This contact accident occurs more remarkably when the number of connection terminals 105 in the connector 106 increases and the pitch between the connection terminals 105 decreases. Further, if the extension 108a is bent in the lateral direction, the extension 108a
Is pressed and deformed by the nameplates 101 and 102, its tip comes into contact with a conductive pattern or an electronic component on the printed circuit board 104, causing various troubles. This contact accident
In particular, when the thickness of the product (IC card) is reduced and the distance between the printed circuit board 104 and the extension 108a is reduced, it is particularly likely to occur. For this reason, it becomes an obstacle to increase the number of pins and reduce the thickness of the connector 106.

Further, an extension 105a of each connection terminal 105
When soldering to the printed circuit board 104, the extension 1
Since the extension portion 108a is located near the portion 05a, the extension portion 108a becomes an obstacle during soldering, thereby lowering work efficiency. If the extension 108a is further extended inside the printed circuit board 104 to solve this, the printed circuit board 104
There is a disadvantage that the mounting area of other electronic components and conductive patterns on the above becomes small, which is not preferable.

Other related applications include, for example, Japanese Patent Application Laid-Open Nos. 4-153096 and 5-221191, and the connectors according to these proposals also have the same disadvantages as described above. .

The present invention solves the above-mentioned drawbacks of the prior art and does not excessively deform or protrude the ground pin protruding portion. It is intended to provide an electronic card used.

[0018]

According to a first aspect of the present invention, there is provided a connector having a connector frame and a predetermined number of connector pins arranged in the connector frame. .

A plurality of ground pins of the connector pins are provided, and one of the ground pins has an upwardly projecting piece, and the other ground pin has a downwardly projecting piece. A notch is formed in a portion of the connector frame corresponding to the pin, a protruding piece of one ground pin protrudes from the upper surface of the connector frame through the notch, and a protruding piece of the other ground pin protrudes from the lower surface of the connector frame. It is characterized by having.

According to a second aspect of the present invention, there is provided a printed circuit board on which electronic components are mounted, and a predetermined number of connector pins arranged in a connector frame. The present invention is directed to an electronic card including a connector in which ground pins are connected to a ground pattern on a printed circuit board, and two conductive plates disposed in contact with upper and lower surfaces of the connector frame.

A plurality of ground pins of the connector pins are provided, one of the ground pins has an upwardly projecting piece, and the other ground pin has a downwardly projecting piece. A notch is formed in a portion of the connector frame corresponding to a pin, and in a state in which the two conductive plates are disposed in contact with upper and lower surfaces of the connector frame, a protruding piece of one ground pin is positioned upward through the notch. It is characterized in that it is in contact with the conductive plate, and the protruding piece of the other ground pin is in contact with the lower conductive plate.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As described above, the present invention forms a notch in a connector frame, and a part of a ground pin protrudes through the notch. Therefore, when other members come into contact with the protrusions of the ground pin during handling or during assembly of the product and the protrusions are pressed, the other members eventually come into contact with the outer surface of the connector frame, Since the protrusion is regulated so as not to be deformed by pressing,
The projection of the ground pin is not excessively deformed.

As described above, since the protrusion of the ground pin is prevented from being excessively deformed, the above-mentioned various troubles caused by the deformation are eliminated.

Also, since a plurality of ground pins are provided, and the protruding piece of one ground pin is in contact with the upper conductive plate and the protruding piece of the other ground pin is in contact with the lower conductive plate, Static electricity countermeasures are taken. Thus, a connector and an electronic card having excellent operation reliability can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a memory card according to the embodiment, and FIG. 2 is an enlarged perspective view of a main part of the memory card.

A large number of connector pins are arranged on the connector 3, and a plurality of ground pins 10 are provided among the connector pins. Ground pin 10
Each has a protruding piece 10a that protrudes downward.

In the connector frame 9, through holes 9a are formed above and below the portions corresponding to the respective ground pins 10, and projecting pieces 10a facing upward or downward from the ground pins 10 are formed in the through holes 9a. Partially protrudes from 9a (FIG. 1 shows only a protruding piece 10a protruding upward from the perspective view).

As shown in FIG. 2, both protruding pieces 10a have both root-side ends 10b, 10b at opposite side walls 9b, 9b of the through hole 9a.
9b. Reference numeral 10c denotes a distal end of the protruding piece 10a, which is designed so as not to protrude beyond a rear end 9c of the connector frame 9 joined to the printed circuit board 1.

The printed board 1 is composed of the upper nameplate 4 and the lower nameplate 6.
When the (connector frame 9) is sandwiched, the projecting pieces 10a come into contact with the upper nameplate 4 and the lower nameplate 6, so that static electricity from the outside flows from the nameplates 4 and 6 to the ground pin 10, and a reliable measure against static electricity is taken. Taken.

[0030]

According to the present invention, as described above, the notch is formed in the connector frame, and a part of the ground pin projects through the notch. Therefore, when other members come into contact with the protrusions of the ground pin during handling or during assembly of the product and the protrusions are pressed, the other members eventually come into contact with the outer surface of the connector frame, Since the protrusion is regulated so as not to be further deformed by pressing, the protrusion of the ground pin is not excessively deformed. As described above, the protrusion of the ground pin is prevented from being excessively deformed, so that the above-described various troubles caused by the deformation are eliminated.

Also, since a plurality of ground pins are provided, and the protruding piece of one ground pin is in contact with the upper conductive plate and the protruding piece of the other ground pin is in contact with the lower conductive plate, Static electricity countermeasures are taken. Thus, a connector and an electronic card having excellent operation reliability can be provided.

If a part of the ground pin protrudes from the outer surface of the connector frame as shown in FIG. 1, the connection by the jumper wire is easy and reliable.

In addition, since a part of the ground pin protrudes upward and downward (especially if the protruding portion is provided at the upper and lower symmetric positions), there is no directivity above and below the connector frame. Easy integration into products.

In the above embodiment, the front end of the projection of the ground pin does not protrude from the rear end of the connector frame which is joined to the printed circuit board. With this configuration, even if the protruding portion of the ground pin is pressed and deformed, the contact with the pattern on the printed board or the electronic component can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a memory card according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a main part of the memory card.

FIG. 3 is an exploded perspective view of a memory card according to a conventional example.

FIG. 4 is a partial exploded perspective view of a conventionally proposed IC card.

FIG. 5 is a sectional view of the IC card.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printed circuit board 2 IC chip 3 Connector 4 Upper nameplate 5 Frame 6 Lower nameplate 9 Connector frame 9a Through hole 10 Ground pin 10a Projection piece

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-61-258798 (JP, A) JP-A-4-10295 (JP, A) JP-A-5-282507 (JP, A) JP-A-4-258 153096 (JP, A) JP-A-2-155986 (JP, A) JP-A 62-90166 (JP, U) JP-A 3-35672 (JP, U) JP-A 5-64968 (JP, U) (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 13/648-13/658 H01R 24/08

Claims (2)

(57) [Claims] 1. A connector having a connector frame and a predetermined number of connector pins arranged in the connector frame, wherein a plurality of ground pins of the connector pins are provided, and one of the ground pins protrudes upward. The projecting piece is
A projecting piece projecting downward is formed on the other ground pin, a cutout portion is formed in a portion of the connector frame corresponding to each ground pin, and a projecting piece of one ground pin is formed through the cutout portion on the connector frame. A connector protruding from an upper surface and a protruding piece of the other ground pin protruding from a lower surface of the connector frame. 2. A printed circuit board on which electronic components are mounted, and a predetermined number of connector pins arranged in a connector frame;
An electronic device comprising: a connector attached to the printed circuit board, wherein a ground pin of the connector pins is connected to a ground pattern of the printed circuit board; and two conductive plates disposed in contact with upper and lower surfaces of the connector frame. In the card, a plurality of ground pins among the connector pins are provided, and one of the ground pins has a protruding piece projecting upward.
A projecting piece projecting downward is formed on the other ground pin, a cutout portion is formed in a portion of the connector frame corresponding to each ground pin, and the two conductive plates are disposed in contact with upper and lower surfaces of the connector frame. In the electronic card, the protruding piece of one ground pin is in contact with the upper conductive plate and the protruding piece of the other ground pin is in contact with the lower conductive plate through the cutout.