JPH03227298A - Ic card - Google Patents

Abstract

PURPOSE:To eliminate loss of durability of a metal contact in contact with an electrode terminal by engaging small protrusions with small holes to integrate a card base with a circuit board, and exposing the terminal with a cutout between pectinated guides. CONSTITUTION:Small protrusions 32 are engaged with small holes 40 to be combined. An electronic component mounted on a circuit board 26 is contained in the recess of the rear surface of a card base 24, and the protrusions 32 protrude from the rear surface of the board 26. When the material of the base 24 is thermoplastic, the base 24 can be coupled with the board 26 by applying pressure to the protrusions while heating them. Accordingly, they can be combined without using a both-side adhesive tape or adhesive, and improper contact due to extension of the tape or the adhesive is eliminated. When an IC card is inserted into an opposite side connector, the metal contact 42 of the connector is contained in a cutout 30 in contact with an electrode terminal 38, thereby transmitting information.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an IC card in which electronic components are incorporated into the card. This is to prevent damage and to not impair the durability of the contacts that come into contact with the electrode terminals.

[Conventional technology]

For example, a conventional IC card has a card 10 as shown in FIG.
Some electrode terminals 12 are exposed on the surface. In such devices, when a person carries them around in their clothes, the electrode terminals 12 come into contact with clothes that are charged with static electricity due to friction, destroying electronic components such as internal semiconductors and causing important data to be lost. There was a risk of being destroyed. Furthermore, if there are no guide portions on both sides of the electrode terminals 12 and the spacing between the electrode terminals is narrow, there is a risk that the mating connector will come into contact with the adjacent electrode terminal and malfunction.

Therefore, as a solution to these problems, the third
An IC card 14 shown in the figure has been proposed. This has a guide portion 16 formed therein, and electrode terminals 18 are accommodated in the four inner portions 20 thereof.

[Problem to be solved by the invention]

According to the IC card 14 shown in FIG. 3, the electrode terminals 18 are housed in the recesses 20, so even if you carry them around inside your clothes, they will not come into contact with your clothes, thereby preventing damage due to static electricity. I can do it.

Further, since the guide portion 16 is provided, the mating connector does not come into contact with the adjacent electrode terminal, and malfunction can be prevented.

However, in such a structure, when inserting the IC card 14, the metal contact portion of the mating connector must climb over the platform-shaped slide portion 22 and come into contact with the electrode terminal 18, so that the metal contact portion is largely bent. For this reason, the metal contact portion tends to lose its springiness, resulting in a shortened lifespan. Further, since the electrode terminal 18 is housed in the recess 20, lumps and the like tend to accumulate, causing poor contact.

This invention solves the drawbacks in the conventional techniques, and
The present invention aims to provide an IC card that protects the electronic components inside the card from static electricity, prevents dust from accumulating on the electrode terminals, and does not impair the durability of the metal contacts that come into contact with the electrode terminals. be.

[Means to solve the problem]

The present invention includes a card base in which a comb-shaped guide is formed on the side and a small protrusion formed on the comb-shaped guide, and an electronic component is mounted thereon, and an electrode terminal connected to the electronic component is connected to the comb-shaped guide. a circuit board formed at a position corresponding to a notch between the shaped guides and a small hole formed at a position corresponding to the small protrusion, and the small protrusion is fitted into the small hole to connect the card base and the circuit board. The electrode terminal is integrated with the substrate so that the electrode terminal is exposed in the notch between the comb-like guides.

[For production]

According to this invention, the metal contact portion of the mating connector comes into contact with the electrode terminal through the notch between the comb-shaped guides. According to this, since the comb-shaped guide does not have the platform-shaped sliding part 22 like the IC card 14 in FIG. 3,
The metal contact portion of the mating connector can contact the electrode terminal without climbing over the card base portion. Therefore, the metal contact portion of the mating connector is less bent, and its springiness can be maintained for a long period of time, thereby extending its life.

In addition, the electrode terminals are housed in the notches between the comb-shaped guides, but since these are not closed four parts (they are open toward the tips of the comb-shaped guides), there is a risk of lumps and the like accumulating. This also prevents poor contact.

〔Example〕

An embodiment of this invention will be described below. FIG. 1 shows an IC card to which the present invention is applied before a card base 24 and a circuit board 26 are assembled.

The card base 24 is made of, for example, plastic, and has a comb-like guide 28 integrally formed at its end. Long and short notches 30 are formed alternately between the comb-shaped guides 28 . A small protrusion 32 is integrally formed near the tip of each comb-shaped guide 28 so as to face downward. In addition to the positions of the comb-shaped guides 28, small protrusions 32 are integrally formed at the periphery and center of the card base 24 so as to face downward.

The circuit board 26 is composed of a printed circuit board or the like, and has semiconductor elements 34 and other electronic components mounted thereon. circuit board 2
On the electrode terminal 6, an electrode terminal 38, a wiring 36 for connecting the electrode terminal 38 and an electronic component, and the like are formed using a printed pattern of copper or the like.

The electrode terminal 38 is formed at a position corresponding to the notch 30 of the card base 24. Furthermore, small holes 40 are formed in the circuit board 26 at positions corresponding to the small protrusions 32 of the card base 24.

The state in which the card base 24 and the circuit board 26 are combined is shown in the fourth figure.
As shown in the figure. These are combined by fitting the small protrusion 32 into the small hole 40. The electronic components mounted on the surface of the circuit board 26 are accommodated in four parts of the back surface of the card base 24, and small protrusions 32 protrude from the back surface of the circuit board 26. If the material of the card base 24 is thermoplastic plastic,
The card base 24 and the circuit board 26 can be bonded by applying pressure while heating the small protrusions. By using such a bonding method, it is possible to assemble without using double-sided adhesive tape or adhesive, and there is no possibility of poor contact due to tape or adhesive protruding.

FIG. 5 is a sectional view showing how this IC card 1 is used. When the IC card 1 is inserted into the mating connector, the metal contact portions 42 of the mating connector are accommodated in the notches 30 and come into contact with the electrode terminals 38, allowing information to be transmitted.

As can be seen from FIG. 5, since the metal contact portion 42 can contact the electrode terminal 38 without climbing over a part of the card base 42, the metal contact portion 42 of the mating connector is less likely to be bent, and its springiness can be maintained for a long period of time. It can be retained to extend its lifespan. Further, the electrode terminal 38 is connected to the notch 3 between the comb-shaped guides 28.
0, but since it is not a closed four part (it is open towards the tip of the comb teeth), dust etc. are prevented from accumulating on the electrode terminal 38, and poor contact is prevented. be done.

Moreover, since the electrode terminal 38 is housed in the notch 30, even if the electrode terminal 38 is carried around in clothes, it will not come into contact with the clothes, and damage caused by static electricity can be prevented. Furthermore, since the comb-shaped guide 28 is provided, the mating connector does not come into contact with the adjacent electrode terminal, and malfunctions are also prevented.

[Example of change]

In the above embodiment, the small protrusions 32 were made to protrude from the small holes 40, and the protruding parts were bonded by heating and compression. However, if the circuit board has a certain thickness, it is also possible to assemble the small protrusions by press-fitting the small protrusions into the small holes. It is.

Further, although the small protrusions 32 are provided on all of the comb-shaped guides, they may be provided only on some of the comb-shaped guides.

〔Effect of the invention〕

As explained above, according to the present invention, the following effects can be obtained.

(B) Since the electrode terminals are not exposed, there is no risk of the electrode terminals coming into direct contact with static electricity-generated clothing, which can avoid destruction of electronic devices such as semiconductor devices, damage to memory data, etc. (mouth) Both sides of the electrode terminals Even if the distance between the electrode terminals is short, there is no risk that the contact terminal on the equipment side will accidentally touch the adjacent electrode terminal, and there will be no malfunction due to this.(c) The electrode terminals are held by guides on both sides It is located at the back of the notch, and is not a concave place, so if chips etc. accumulate, they can be easily removed and are less likely to cause poor contact. The metal contact part of the connector on the side of the receiving device contacts the electrode terminal without going over a part of the card base, and there is no risk of damaging the springiness of the contact (e) The guide part of the card base is However, if it is connected to the circuit board through small protrusions as shown in the example, the mechanical strength can be greatly improved.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an exploded state before assembly of an IC card in an embodiment of the present invention. FIG. 2 is a perspective view of an IC card according to the prior art. FIG. 3 is a perspective view of a portion of another IC card according to the prior art. FIG. 4 is a perspective view showing the assembled state of the IC card of FIG. 1. FIG. 5 is a sectional view showing the IC card of FIG. 1 in use after assembly. 1...IC card, 24...card base, 26...
・Circuit board, 28... Comb-shaped guide, 30... Notch, 32... Small protrusion, 32'... Small protrusion after heating and compression, 34... Semiconductor element, 38... Electrode Terminal, 40・
...Small hole, 42...Metal contact part. 12: Electromochi-Yo 2nd figure 22: Nukuido 16-Non-i F: g

Claims (1)

[Claims] A card base having a comb-shaped guide formed on its side and small protrusions formed on the comb-shaped guide, an electronic component mounted thereon, and an electrode terminal connected to the electronic component mounted on the card base. a circuit board formed at a position corresponding to the notch between the comb-teeth guides and a small hole formed at a position corresponding to the small protrusion, and the small protrusion is fitted into the small hole to connect with the card base. An IC card that is integrated with the circuit board and configured such that electrode terminals are exposed in the notches between the comb-like guides.