JPH0827820B2 - IC card reader / writer - Google Patents

Description

TECHNICAL FIELD The present invention relates to an IC card read / write device for reading information stored in an IC card or writing information in the IC card.

Conventional Technology FIG. 4 to FIG. 6 show conventional examples. FIG. 4 is a diagram before the IC card is conveyed, and FIGS. 5 and 6 are states after the IC card is conveyed. When the IC card 1 is inserted through the insertion opening 2a of the main body panel 2, the lever 4a of the micro switch 4 attached to the upper frame 3 is pressed, and the IC card 1 is detected to be inserted, and the motor 5 is activated. Rotate. Then, the rotation is transmitted to the reduction gear 7 from the gear 6 attached to the rotation shaft of the motor 5, and further transmitted from the small gear 7a integrated with the gear 7 to the next reduction gear 8 and further from the small gear 8a to the IC card. The rotation is transmitted to the gear 9 which is integrated with the transport roller 10 to rotate the roller 10. A driven roller 12 pressed by a leaf spring 11 is arranged at a position opposite to the roller 10, and the IC card 1 is manually inserted up to the vicinity of the contact point between the roller 10 and the roller 12 so that the IC card 1 is driven by a motor. It is automatically loaded by rotating 5. A contact point 13 in which the tip of the IC card 1 is brought into conductive contact with the electrodes of the IC card 1 supported by the upper surface frame 3 as the IC card 1 is conveyed.
The lever portion 14a of the contact holding plate 14 holding the is pressed. Then, the contact holding plate 14 subsequently rotates and moves, and the IC card 1
The electrode and the contact 13 make conductive contact, and the contact holding plate 14
The leaf switch 15 detects the movement of the lever portion 14a of the motor and stops the rotation of the motor 5. After this operation is completed, information communication between the IC card 1 and peripheral devices is performed, and after the communication is completed, the motor 5 is rotated in the reverse direction to eject the IC card 1.

Problems to be Solved by the Invention As described above, in the conventional example, the IC card 1 is conveyed by the motor 5
Rotation is slowed down by the spur gear and the driven roller 12 is used, the number of parts is large and it is difficult to downsize the whole shape, and the backlash of the spur gear prevents the position of the IC card 1. There was a problem in that the electrodes did not come out with high precision and conduction failure occurred between the electrodes of the IC card 1 and the contacts 13 of the read / write device. Moreover, in the structure of the contact holding plate like the conventional example,
In order to reduce the torque for pushing down the contact, it is necessary to lengthen the lever portion, which also causes a problem of increasing the size.

An object of the present invention is to provide a small-sized, highly reliable, and inexpensive IC card read / write device that does not use a conventional mechanism.

Means for Solving the Problems In order to achieve the above object, the present invention provides a sensor for detecting an IC card by inserting the IC card, a motor rotationally driven by a signal from the sensor, and a shaft of the motor. A worm gear provided, a worm wheel that meshes with the worm gear, an IC card carrying roller provided on the rotation shaft of the worm wheel, and a plate spring for pressing provided at a position facing the IC card carrying roller, At least one slider to be moved by the conveyed IC card, and a contact holding plate provided with a contact that is brought into conductive contact with the electrode of the IC card by being moved by a cam portion provided on the slider.

According to the above configuration, the IC card read / write device is downsized by using the worm gear and the worm wheel, and using the pressing leaf spring without using the driven gear.
It is possible to improve the reliability by preventing the displacement of the card and provide an inexpensive read / write device.

Embodiment One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a state before the IC card is inserted, and FIGS. 2 and 3 show a state after the IC card is conveyed.

When the IC card 1 is inserted from the insertion port 2a of the body panel 2, the micro switch 36 attached to the upper frame 21
Detects that the IC card 1 is inserted and rotates the motor 22.

When the motor 22 rotates, the worm gear 23 fixed to the rotation shaft of the motor 22 rotates, and the rotation is transmitted to the worm wheel 24 that meshes with the worm gear 23. Worm wheel
When 24 rotates, the card transport roller 25 integrated with the worm wheel 24 also rotates. A plate-shaped pressure spring 27 is arranged on the lower surface frame 26 at a position opposite to the roller 25, and automatic conveyance is started from the position where the IC card 1 contacts the roller 25 and the plate-shaped pressure spring 27, and the IC card 1 is conveyed. As a result, the tip of the IC card 1 moves the support shaft 29 fixed to the upper frame 21, and the slider 31 supported by the support shaft 30. The movement of the slider 31 causes the cam portion 31a of the slider 31 to come into contact with the cam portion 34a of the contact holding plate 34 which is supported by the support shaft 32 provided on the upper frame 21 and holds the contact 33, thereby holding the contact. The plate 34 is rotationally moved, and the contact 33 is brought into conductive contact with the electrode of the IC card 1. Then, along with this, the bent portion 31b of the slider 31 is moved to the lease switch 35.
When the IC card 1 is pressed by the movable piece 35a, it is detected that the IC card 1 is conveyed to the specified position, and the rotation of the motor 22 is stopped. After this operation is completed, information communication between the IC card 1 and peripheral devices is performed, and after the communication is completed, the motor 22 is rotated in the reverse direction to eject the IC card 1. Although the insertion detection of the IC card 1 and the detection of conveyance to the specified position are performed by the leaf switch 35, a method of directly detecting the tip of the IC card 1 by a photo sensor or the like may be adopted. Reference numeral 38 is a lead wire portion, and 39 is a contact holding spring.

EFFECTS OF THE INVENTION According to the present invention, since the rotation of the motor is not transmitted by the conventional pre-gear, the rotation is transmitted by the worm gear and the worm wheel, and the plate-shaped pressure spring is used without using the driven roller, Miniaturization of equipment, improvement of noise,
The contact of the contacts can be made reliable, and the device can be provided at low cost. Further, the rotary movement mechanism of the contact holding plate by the slider greatly contributes to downsizing of the device.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part of an embodiment of the present invention before insertion of an IC card, FIG. 2 is an upper sectional view of the same after carrying an IC card, FIG. 3 is a longitudinal sectional view of the essential part, and FIG. FIG. 5 is a sectional view of an essential part before insertion of an IC card, FIG. 5 is an upper sectional view of the IC card after transportation, and FIG. 6 is a longitudinal sectional view of the essential part. 1 ... IC card, 22 ... motor, 23 ... worm gear,
24 …… Worm wheel, 27 …… Pressure spring, 31 …… Slider, 35 …… Switch.

Claims (1)

[Claims] 1. A sensor that detects an IC card by inserting the IC card, a motor that is driven to rotate by a signal from the sensor, a worm gear that is provided on the shaft of the motor, and a worm wheel that meshes with the worm gear. , IC equipped on the rotating shaft of this worm wheel
A card carrying roller, a pressing plate spring provided at a position facing the IC card carrying roller, at least one slider moved by the carried IC card, and a cam portion provided on the slider. An IC card read / write device, comprising: a contact holding plate provided with a contact that makes a conductive contact with an electrode of the IC card.