JPH0570193B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a card feeding mechanism of an IC card information writing/reading device.

[Conventional technology]

The conventional technique will be explained with reference to FIG.

Figure 2 is a cross-sectional view of a conventional card feeding mechanism.
is a card with a built-in IC, and 2 is a roller that attaches card 1 to connector 5.

3 is a pulse motor that drives roller 2;

4 is a belt that transmits the driving force of the pulse motor 3 to the roller 2; 5 is a connector that connects to the terminal of card 1 to transmit electrical signals.

Reference numeral 6 denotes a presser roller that applies pressure to the card 1 and generates frictional force between it and the roller 2. 7 is a spring that serves as a pressure source for the presser roller 6; 8 is an encoder that detects the card feeding direction and position.

With the above configuration, when the card 1 is pushed to the roller 2, the encoder 8 detects that the card 1 is pushed to the roller 2, and the pulse motor 3 is activated. The driving force of the pulse motor 3 is transmitted by the belt 4 to rotate the roller 2. The presser roller 6 applies pressure to the card 1 by the spring 7, and a frictional force is generated between the roller 2 and the card 1. The card 1 is attached to the connector 5 by the rotation of the roller 2.

[Problem that the invention seeks to solve]

The card feeding mechanism is required to quickly feed the card to the connector and to securely attach the card to the connector. In the case of a pulse motor, which requires a relatively large torque to securely attach a card to a connector, the torque is large at low speeds, but the torque decreases when used at high speeds. In the conventional mechanism, a large pulse motor had to be used in order to satisfy the feed rate and the conditions for mounting on the connector, resulting in a large mechanism and the problem that the pulse motor's power consumption also increased.

[Means for solving problems]

It has a first roller for taking in the card, a second roller for inserting the card into the connector, and a connector for connecting the terminal of the card, and the first roller and the second roller are rotated by a pulse motor to feed the card. The card feeding mechanism is characterized in that the reduction ratio of the pulse motor and the second roller is greater than the reduction ratio of the pulse motor and the first roller.

〔Example〕

FIG. 1 is a cross-sectional view of one embodiment of the present invention.

The present invention will be explained below with reference to FIG. 1 is
A card with a built-in IC, 2a is the first roller for taking in the card, 2b is the second roller for inserting the card into the connector 5, 3a is the pulse motor,
4a is a belt that transmits the driving force of the pulse motor 3a to the first roller and second roller 2b; 5 is a connector that is connected to the terminal of the card 1 to transmit an electric signal; and 6a is a belt that applies pressure to the card 1. 6b is a first presser roller that applies pressure to the card 1 and generates a frictional force between it and the second roller 2b; 7a is a first presser roller. 6a and a spring that serves as a pressure source for the second presser roller 6b; 8a is an encoder that detects the feeding direction and position of the card; 9a is an encoder that detects the card feeding direction and position;
is a belt necessary for interlocking the encoder 8a and the second roller. The first roller 2a and the second roller 2b are connected by a drive shaft of a pulse motor 3a and a belt 4a, and the reduction ratio of the second roller 2b is set to be larger. The spring 7a applies pressure to the card 1 via the first presser roller 6a and the second presser roller 6b, and generates frictional force between the card 1 and the first roller 2a and between the card 1 and the second roller 2b, respectively. This allows card 1 to be sent smoothly. The encoder 8a is attached to a belt 9 so as to interlock with the roller 2b.
connected by a.

When the card 1 is inserted, the first roller 2a rotates due to the frictional force between the first roller 2a and the card 1 due to the pressure of the spring 7a, the belt 4a is fed, and the second roller 2b also rotates. As the second roller 2b rotates, the encoder 8a detects that the card 1 has been inserted and starts the pulse motor 3a. The pulse motor 3a is the first roller 2
a and the second roller 2b. The card 1 is sent to the second roller 2b at a speed equal to the reduction ratio of the pulse motor 3a and the first roller 2a, and when it reaches the second roller 2b, the card 1 is sent to the second roller 2b.
is sent to the connector 5 at a speed equal to the reduction ratio of the roller 2b. At this time, although the speeds of the first roller 2a and the second roller 2b are different, the pressure of the first presser roller 6a to press the card 1 is set to be lower than the pressure of the second presser roller 6b. The roller 2a is designed to slip. The connector 5 has pins lined up for electrical connection with the card 1, and applies pressure to the electrodes of the card 1. When the card 1 reaches the pins of the connector 5, the resistance increases, but since the second roller 2b has a large reduction ratio to ensure a large card feeding force, the card 1 can be easily connected to the connector 5. .

〔Effect of the invention〕

In the conventional structure, the card had to be re-feeded quickly and connected to the connector, so a pulse motor with large torque had to be selected, resulting in a large mechanism, but according to the present invention, The first roller that takes in the card with a smaller reduction ratio quickly feeds the card to the second roller that inserts the card with a larger reduction ratio into the connector.
From there, it is slowly fed by a second roller with a large reduction ratio, so a small pulse motor can be used and the mechanism can be made more compact.

The second roller, which has a large reduction ratio, feeds the card slowly, reducing the impact when the pins of the connector connect with the terminals of the card, thereby extending the life of the card when it is inserted or removed. Furthermore, power consumption can be reduced by making the pulse motor smaller.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of one embodiment of the present invention, and FIG. 2 is a sectional view of a conventional example. The symbols are explained below. DESCRIPTION OF SYMBOLS 1... Card, 2... Roller, 2a... First roller, 2b... Second roller, 3, 3a... Pulse motor, 4, 4a, 9, 9a... Belt, 5... Connector, 6... Presser roller, 6a... First presser roller, 6b...second presser roller, 7,7a...spring, 8,8a...encoder.

Claims (1)

[Claims] 1. It has a first roller for taking in the card, a second roller for inserting the card into the connector, and a connector for connecting the terminal of the card, and the first roller and the second roller are rotated by a pulse motor to read the card. A card feeding mechanism characterized in that the reduction ratio of the pulse motor and the second roller is greater than the reduction ratio of the pulse motor and the first roller.