JPH05189630A - Ic card - Google Patents

Abstract

PURPOSE:To easily connect metallic panel and a circuit substrate GND part opposed to each other as an electrostatic countermeasure, to reduce the number of parts and to shorten an assembling time. CONSTITUTION:A GND part through hole 13 is formed on a circuit substrate 3, a connecting member 14 is inserted into the through hole 13 so as to penetrate it and upper and lower metallic panels 4, 5 and the GND part 12 of the substrate 3 are mutually connected with contact so as to be set up to the same potential. Since respective parts can be connected only by the use of one connecting member, the number of parts can be reduced and the assembling time can be shortened by the simple configuration.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to countermeasures against static electricity in IC cards.

[0002]

2. Description of the Related Art FIGS. 3 to 5 show a conventional IC card, in which 1 is a base A, 2 is a base B, 3 is a circuit board,
This circuit board is assembled by scissors between the bases 1 and 2 and the metal panels 4 and 5 with an adhesive or the like.

That is, in order to protect and protect the circuit board 3 which is the main part of the IC card, the substrates 1 and 2 are joined by using scissors, an adhesive, an adhesive tape or the like. Metal panels 4 and 5 are adhered to the bases 1 and 2 from both upper and lower surfaces in order to block external radio wave noise and prevent electrostatic charging.
In addition, the metal panels 4 and 5 have holes 10 formed in the base body 1.
The springs 8 inserted in a and 10b are connected so as to have the same electric potential, and the GND portion 12 of the circuit board 3 and the metal panel 4 are connected by the spring 9 inserted in the hole 11.

[0004]

Since the conventional device is constructed as described above, two springs 8 and 9 are used to connect the metal panels 4 and 5 and the GND 12 of the circuit board 3 to each other. However, there are problems such as a large number of parts and a long assembling time in consideration of the time of assembling.

The present invention has been made in order to solve the above-mentioned problems, and in order to block external radio wave noise and prevent static electricity from being charged, as in the conventional device, a gap between both metal panels and a gap between the circuit boards GND are provided. Without losing connection
Moreover, it is an object of the present invention to provide an IC card in which the number of parts can be reduced and the assembling can be facilitated to reduce the assembling time.

[0006]

An IC card according to the present invention is provided with a through hole in a circuit board GND portion, and a metal panel and a circuit board GN are mutually connected through the through hole.
The structure is such that D is contact-connected.

[0007]

The IC card according to the present invention is the circuit board GN.
A through hole is provided in the D section, and the mutual metal panel and the circuit board GND section are formed by the through hole.
Since it is conducted by two conducting materials, the number of parts is reduced,
The assembly process can be reduced.

[0008]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numerals 3, 4, 5, and 12 denote the same members as those in the conventional example, 13 denotes a through hole of the GND portion 12 provided on the circuit board 3, and 14 denotes a through hole. It is a conductive member composed of springs that come into contact with the panels 4 and 5 vertically.

In the apparatus constructed as described above, the metal springs 4 and 5 and the circuit board GND portion are mutually connected by the conduction spring 14 attached through the through hole 13 provided in the GND portion 12 of the circuit board 3. 12 makes electrical contact.

Embodiment 2. In the above embodiment, the conducting member is provided with a spring, but the conducting member may not be a spring but may be a conducting member having a shape as shown in FIG. Further, in the above embodiment, the case of the IC card has been described, but other electronic devices may be used.

[0011]

As described above, according to the present invention, the circuit board GND portion is provided with the through hole through which the conductive member for electrically contacting the mutual metal panel and the circuit board GND portion is provided. In addition to easily conducting the mutual metal panel and the circuit board GND portion, it is possible to reduce the number of parts and facilitate the assembly process.

[Brief description of drawings]

FIG. 1 is a sectional view of an IC card according to an embodiment of the present invention.

FIG. 2 is a sectional view of an IC card showing another embodiment of the present invention.

FIG. 3 is a perspective view of the entire IC card.

FIG. 4 is an exploded perspective view of a conventional IC card.

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

[Explanation of symbols]

 3 Circuit board 4, 5 Metal panel 12 GND part 13 Through hole 14 Conductive member

Claims (1)

[Claims] 1. A circuit board GND portion is provided with a through hole, and a conductive member penetrating through the through hole of the GND portion is provided, and a metal panel and a circuit board GND portion which are placed relative to each other through the conductive member have the same potential. An IC card characterized by being configured so as to make electrical contact with each other.