JPH067410Y2 - IC card contact pressure mechanism - Google Patents

Description

[Detailed Description of the Invention] [Outline] Regarding an IC card contact pressure mechanism, particularly an IC card contact pressure mechanism that can be formed thinly by using an eccentric roller and a contact spring, the structure of the contact pressure mechanism is as simple as possible. The purpose of the present invention is to provide an IC card contact pressure mechanism that can be installed in a smaller space.

An eccentric roller that comes into contact with the upper surface of the IC card and rotates while interlocking with the insertion / ejection operation, and a contact spring that is constantly biased upward and movably supported in the vertical direction at a fulcrum, and is formed on the protrusion of the eccentric roller. In addition, the IC card contact pressurizing mechanism is characterized in that the contact spring is pressed against the electrode of the IC card by pushing up the rear end of the contact spring at the step portion that delays the push-up time.

[Industrial application field]

The present invention relates to an IC card contact pressure mechanism, and more particularly to an IC card contact pressure mechanism that can be thinly formed using an eccentric roller and a contact spring.

[Prior Art] FIG. 4 is a sectional view of the structure of a contact pressure mechanism of a conventional example, in which (a) is a state diagram before an IC card is inserted and (b) is a state diagram when the IC card is inserted. .

The IC card has a built-in memory chip composed of semiconductor ICs, and can process a large amount of data compared to conventional magnetic stripe cards.

FIG. 3 is a plan view of the IC card, and the IC card 31 incorporates an electrically rewritable EEP-ROM and a chip 40 containing a processor. The chip 40 records the encrypted character data, and the built-in arithmetic processor processes it to encrypt a large amount of data.

The card reader for reading the data of the chip 40 makes contact with the electrode 36 on the surface of the chip 40 and supplies an external power source from the contact to perform calculation and reading of stored information by the processor.

As described above, the IC card reader needs a contact pressure mechanism that makes contact with the electrodes of the IC card.

As shown in FIG. 4 (a), the conventional contact pressure mechanism has a lever 35 that is always pulled in one direction and rotates around the rod support shaft 33.
And a contact 37 for contacting the electrode 36 of the IC card 31 with the lever 35. Then, as shown in FIG. 4 (b), when the tip of the inserted IC card 31 pushes up the lever 35 in the arrow F direction, the contact 37 is pushed down in the arrow G direction to contact the electrode.

In addition to the above, there is a contact pressure mechanism that brings the contacts 37 into contact with the electrodes of the IC card using a motor drive source.

[Problems to be solved by the device]

The conventional IC card contact pressurizing mechanism shown in FIG. 4 presses the contact 37 using the long lever 35 that also serves as the abutting portion of the IC card 31 on the rod support shaft 33, so the structure and shape are Since it becomes complicated and the installation space of the contact pressure mechanism increases,
There is a problem that it is difficult to downsize the card reader / writer.

Further, the contact pressure mechanism using the motor drive source requires a separate installation space for the motor and the like, which causes a problem that the device becomes larger.

In order to solve the above problems, an object of the present invention is to provide an IC card contact pressure mechanism that can be installed in a smaller space by simplifying the structure of the contact pressure mechanism as much as possible.

[Means for Solving the Problems]

The above problem is provided with an eccentric roller that is in contact with the upper surface of the IC card and rotates while interlocking with the insertion / ejection operation, and a contact spring that is constantly urged upward and movably supported in a vertical direction at a fulcrum.
It is characterized in that the contact spring is pressed against the electrode of the IC card by pushing up the rear end portion of the contact spring at a step portion formed on the protrusion of the eccentric roller and delaying the pushing time.
This is achieved by the IC card contact pressure mechanism.

[Action]

That is, the IC card contact pressure mechanism of the present invention, as shown in FIG. 1 (a), is in contact with the upper surface of the IC card 11 and rotates eccentrically in conjunction with the insertion / ejection operation. The eccentric roller 12 is provided with a stepped portion 12b for delaying the pushing-up time, and a contact spring 14 which is urged and movably supported in a vertical direction at a fulcrum 13.
2b pushes up the rear end portion 15 of the contact spring 14 and presses the contact spring 14 against the electrode 16 of the IC card 11, so that the number of parts is further reduced and the shape and structure are reduced as compared with the conventional example. Due to the simplification, the card reader / writer can be made thin and small.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a sectional view showing the structure of an embodiment of the present invention, in which (a) is a state diagram before the insertion of an IC card, (b) is a state diagram when the insertion of the IC card is completed, and FIG. It is sectional drawing of the eccentric roller of an Example.

In the figure, 11 is an IC card, 12 is an eccentric roller, 12a is a protrusion, 12b is a step, 13 is a fulcrum, 14 is a contact spring, 15 is a rear end, 16 is an electrode, 17 is a contact, 18 is a base, 19 indicates a stopper.

As shown in FIG. 1 (a), in the IC card contact pressurizing mechanism of this embodiment, the IC card 11 which is moved in the direction of arrow A is mounted on the base 18
When it is inserted between the eccentric roller 12 and the eccentric roller 12, the eccentric roller 12 made of urethane rubber having a high friction coefficient starts to rotate in the left direction shown by the arrow B. In addition, the IC card 11 with stopper 19
When the protrusion 12a of the eccentric roller 12 pushes up the rear end 15 of the contact spring 14 in the direction of arrow C, the contact spring 14 via the fulcrum 13 is pushed down in the direction of arrow D. The contact point 17 provided at the tip and the electrode 16 on the IC card 11 side are brought into contact with each other to apply pressure.

As described above, the IC card contact pressurizing mechanism of this embodiment rotates the eccentric roller by using the energy of the insertion operation of the IC card, and converts the rotational force into the contact force by the lever principle.

Therefore, unlike the conventional lever 35 shown in FIG. 4 (a), since it is not necessary to use a component that is long and needs a wide movable space, the contact pressure mechanism can be made thin and compact. .

Miniaturization by simplifying the structure and shape of the contact pressure mechanism should not deteriorate the contact state between the electrode of the IC card and the contact spring. Therefore, in this embodiment, as shown in FIG. 2, the stepped portion 12b is formed on the protrusion 12a of the eccentric roller 12.
By delaying the timing of pushing up the rear end 15 of the contact spring 14 as shown in FIG. 1 (b).
Just before 1 hits the stopper 19 and stops, contact spring 1
4 is pushed down and contact 17 comes into contact with electrode 16,
Good contact is possible without damaging the contacts and contacts 17.

When the IC card 11 is ejected after the data processing of the IC card 11, the procedure is the reverse of the above-mentioned insertion, but the contact spring 14 is always urged upward, so the eccentric roller As soon as 12 returns, the contact 17 moves away from the electrode 16 and does not damage the electrode 16 or the contact 17.

[Effect of device]

As described above, the IC card contact pressurizing mechanism of the present invention can be installed in a smaller space because the number of parts is reduced and the structure and shape are simplified.

[Brief description of drawings]

FIG. 1 is a sectional view showing the construction of an embodiment of the present invention, in which (a) is a state diagram before the insertion of an IC card, (b) is a state diagram when the IC card is completely inserted, and FIG. Cross-sectional view of the eccentric roller of the embodiment, FIG. 3 is a plan view of the IC card, and FIG. 4 is a cross-sectional view of the contact pressure mechanism of the conventional example, in which (a) is a state diagram before insertion of the IC card. , (B) are state diagrams when the IC card is inserted. 1 and 2, 11 is an IC card, 12 is an eccentric roller, 12a is a protrusion, 12b is a step, 13 is a fulcrum, 14 is a contact spring, 15 is a rear end, 16 is an electrode, 17 is Contact, 18 is a base, 19 is a stopper

Claims (1)

[Scope of utility model registration request] 1. An eccentric roller (12) which is in contact with the upper surface of an IC card (11) and rotates while interlocking with an inserting / ejecting operation, and is always urged upward and movably supported in a vertical direction at a fulcrum (13). A contact spring (14) is provided, and the step (12b) formed on the protrusion (12a) of the eccentric roller (12) that delays the push-up time pushes up the rear end (15) of the contact spring (14). An IC card contact pressing mechanism characterized in that a contact spring (14) is pressed against the electrode (16) of the IC card (11).