JPS6360463B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic card recording/reproducing device for reading signals recorded on a card or recording information on the card.

Structure of a conventional example and its problems FIGS. 1 and 2 show an example of a conventional magnetic card recording/reproducing device. In FIG. 1, a card 15 that is guided by a guide member 1 and inserted into the main body of the apparatus from the direction of arrow
The paper is transported to the magnetic head 2 by a first transport roller 3 driven by a belt 12 stretched around the transport roller 4, and by a third transport roller 5 driven by the belt 13. The first to third conveying rollers include a first pressing roller 7, a second pressing roller 8, and a third pressing roller 9 across the card running path 1b, respectively.
These three pressing rollers are held by a holding member 6. This holding member 6 is a guide pin 10
and 11 to move in the Y direction. Further, the holding member 6 is urged toward the card side by a spring 14.

FIG. 2 shows a state in which the card 15 has reached the second conveyance roller. Since the second pressure roller is made to protrude more toward the card travel path than the first and third pressure rollers, while the magnetic head and the card are in contact with each other to send and receive signals, the second pressure roller alone can transport the card. is possible. If a card straddles two conveyance rollers, the card feeding speed may fluctuate due to the slight difference in the conveyance speed of the two conveyance rollers, or when the card leaves one of the conveyance rollers, the card feeding speed may change. There is a high risk of significant changes resulting in read or write errors. Furthermore, it is mechanically complicated to move the holding member 6 in parallel in the Y direction using the guide pins 10 and 11 as guides, and in the method shown in FIG.
Easy to cause directional fluctuations.

Even if the second pressing roller is made to protrude slightly toward the card running path 1b side within the range of the card thickness than the first and third pressing rollers, since the above-mentioned swinging etc. will occur, the first and third pressing rollers will be It is not reliable whether the difference in protrusion between the pressure roller and the second pressure roller is secured.

There were other drawbacks.

OBJECT OF THE INVENTION The present invention overcomes the above-mentioned conventional drawbacks.
The purpose of the present invention is to provide a magnetic card recording and reproducing device that is easy to assemble and has good reliability.

Structure of the Invention The present invention includes a magnetic head that sends and receives signals to and from a card, a second transport roller that is located near the magnetic head and transports the card, and a second transport roller that transports the card in the card transport direction. A first conveyance roller and a third conveyance roller, which are arranged opposite to each other at an interval shorter than the card length, with the conveyance roller in between, and first to third conveyance rollers for pressing the card against the first to third conveyance rollers. In a magnetic card reader having a third pressing roller, a first holding member that holds the second pressing roller and the first roller located near the magnetic head and has its rotation center on the third pressing roller side; a second holding member that holds the third pressing roller and has its rotation center on the first pressing roller side; and an interlocking mechanism that interlocks the first holding member and the second holding member in the vicinity of the second pressing roller. parts and
By having a resilient member that rotationally biases at least one of the first holding member and the second holding member toward the conveyance roller, there is no need to adjust the protrusion of the pressure roller, and therefore, ease of assembly and reliability are achieved. This makes it possible to realize a magnetic card recording/reproducing device with good performance.

Description of examples An embodiment of the present invention is shown in FIGS. 3 to 10.

In FIGS. 3 and 4, the drive motor 22 is
It is decelerated by the small pulley 23, belt 24, and large pulley 25 to drive the second conveyance roller 4. Furthermore, the driving force is transmitted to the first conveyance roller 3 and the third conveyance roller 5 by the belt 12 and the belt 13. On the other hand, a first pressing roller 7 across the card running path,
There are a second pressing roller 8 and a third pressing roller 9. The first pressing roller 7 and the second pressing roller 8 are held by a first holding member 18 that is rotatable around a fixed shaft 17, and one end of the first holding member 18 has a
Spring 2 that biases the first holding member 18 in a counterclockwise direction
0 is attached. On the other hand, the third pressing roller 9 is held by a second holding member 19 that is rotatable about a fixed shaft 16 . An interlocking member 21 protrudes from the first holding member 18 and connects the second holding member 19. The urging force of the spring 20 is applied by the interlocking member 21 to the first and second holding members 18,
19 is biased clockwise. In addition, the 10th
The figure shows an external perspective view of the first and second holding members 18 and 19.

FIGS. 5 to 8 are schematic diagrams showing the operation of the pressing roller. Figure 5 shows the state before the card is inserted, and the first to third pressure rollers are
~In contact with the third conveyance roller.

FIG. 6 shows a state in which the card has entered between the first conveying roller 3 and the first pressing roller 7. At this time, the operation of each pressure roller is temporarily changed to the pressure roller 8.
is located in the center between the fixed shaft 17 and the pressing roller 7, the second pressing roller 8 is 1/2 of the card thickness, and the third pressing roller is 1/2 of the card thickness from each conveying roller. It is in a floating state. As a result, the motor load is reduced to only the first conveyance roller, and the power of the motor can also be small.

FIG. 7 shows a state in which the card 15 has reached the second conveyance roller 4. As shown in FIG. The card 15 is the second pressing roller 8
At the moment when the card 1 is pushed up, the first pressing roller 7
5, and only the second conveyance roller 8 is conveyed. In a normal magnetic card recording/reproducing device, since the magnetic head 2 is located near the second conveyance roller 4,
While the magnetic head 2 is transmitting and receiving signals, it is essential that the card 15 be transported at a constant speed using only the second transport roller 4. At this time the third
The pressure roller 9 is also lifted from the third conveyance roller 5 by approximately the same amount as the first pressure roller 7.

FIG. 8 shows a state in which the card is separated from the second conveyance roller 4. As shown in FIG. At the moment when the card 15 is separated from the second conveyance roller 4, the third pressing roller 9 held by the holding member 19 presses the card 15 while being rotated clockwise by the spring 20. When a sensor (not shown) detects that the card 15 has passed the magnetic head 2, the drive motor 22 is reversed in response to a command from the control circuit.
is again sent to the second conveyance roller 4 and the first conveyance roller 3. In this way, the series of operations ends. The features of this embodiment are as follows.

Compared to the first pressing roller 7 and the third pressing roller 9, there is no need for the second pressing roller 8 to slightly protrude toward the card running path, and the rotational movement of the first and second holding members 18 and 19 produces a protruding effect. The same effect can be obtained.

Since the first and second holding members 18 and 19 are rotary, they are mechanically simpler and more reliable than the parallel movement type of the conventional example.

Since only the pair of transport rollers and the pressing roller are always in contact with the card 15 while the card 15 is being transported, the load on the motor is also reduced, and the motor can therefore be made smaller.

Note that the fixed shaft 17, which is the center of rotation of the first holding member 18, and the fixed shaft 16, which is the center of rotation of the second holding member 19, shown in FIG. Rod-shaped members 26 and 27 may be used to connect 29.

Effects of the Invention A magnetic head that sends and receives signals to and from a card, a second conveyance roller that is located near the magnetic head and that conveys the card, and a second conveyance roller that is arranged in the card conveyance direction. A first conveyance roller and a third conveyance roller, which are arranged opposite to each other at an interval shorter than the card length, and the first to third
the first for pressing the card against the conveyance roller;
- A magnetic card reader having a third pressing roller, a holding member A that holds the second pressing roller and the first roller located near the magnetic head, and has its rotation center on the third pressing roller side; A holding member B that holds the third pressing roller and has its rotation center on the first pressing roller side, and holding member A and holding member B near the second pressing roller.
By providing an interlocking member that interlocks the holding members A and B, and a resilient member that rotationally biases at least one of the holding members A and B toward the conveying roller, it becomes unnecessary to adjust the protrusion of the pressure roller. Therefore, it is possible to realize a magnetic recording/reproducing device with good assemblability and reliability.

[Brief explanation of drawings]

1 and 2 are side views of a conventional magnetic card recording and reproducing device, FIG. 3 is a side view of a magnetic recording and reproducing device according to an embodiment of the present invention, FIG. 4 is a top view, and FIGS.
FIG. 8 is a side view for explaining the operation, FIG. 9 is a top view of another embodiment, and FIG. 10 is an external perspective view of the first and second holding members. 2...Magnetic head, 3...First conveyance roller, 4
...Second conveyance roller, 5...Third conveyance roller, 7
...First pressure roller, 8...Second pressure roller, 9
...Third pressure roller, 18...First holding member, 1
9...Second holding member, 20...Spring.

Claims (1)

[Claims] 1 A magnetic head that sends and receives signals to and from a card, a second transport roller that is located near the magnetic head and transports the card, and a second transport roller that is sandwiched in the card transport direction. , a first conveyance roller and a third conveyance roller that are arranged opposite each other at an interval shorter than the card length, and first to third pressure rollers for pressing the card against the first to third conveyance rollers. holding the second pressing roller and the first pressing roller located near the magnetic head, and holding the third pressing roller and a first holding member having its rotation center on the third pressing roller side; a second holding member having its rotation center on the first pressing roller side; an interlocking member for interlocking the first holding member and the second holding member in the vicinity of the second pressing roller; 1. A magnetic card recording/reproducing device comprising: a resilient member that rotationally urges at least one of the two holding members toward the conveying roller.