JPH075578Y2 - Magnetic card reader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a magnetic card reader in which a card transport path can be opened by a door block.

(Prior Art) In recent years, magnetic cards have been used in many fields. The magnetic card inserted in the card reader is sent to a magnetic head as a recording / reproducing means through a card conveying path, and is read out or written and then ejected.

The card transport path is provided with a plurality of rollers constituting a card feeding device, a drive roller is arranged on one side of the card transport path, and the other side of the card transport path is provided with A pad roller, which is brought into pressure contact with the drive roller, is arranged so as to face it. Further, the magnetic head is provided on the drive roller arrangement side of the card transport path,
The pad roller is also arranged to face the magnetic head in a pressed state.

Such a card transport path may be configured to be openable via a door block in order to facilitate maintenance and the like. The door block is installed so as to be openable and closable with the back side in the card transport direction as a fulcrum, and the above-mentioned pad roller is provided in the door block. With this structure, the pad roller is separated from the card transport path when the door block is opened. When the door block is closed and locked, the pad roller is pressed against the drive roller and the magnetic head, and the magnetic card can be conveyed.

(Problems to be solved by the invention) However, in the conventional device, even if the user forgets to lock the door block, the pad roller comes into contact with the drive roller due to the weight of the door block, and the magnetic card inserted by mistake is taken in. It may be lost. If the card is transported halfway without being locked, an error will occur in recording / playback, which may damage the user and cause a serious problem.

On the other hand, various mechanisms for preventing the door block from being left behind have been proposed to deal with such a problem, but the mechanism is essentially an extra mechanism and causes a problem in operability.

Therefore, the present invention can reliably prevent the magnetic card from being taken in if the door block is forgotten to be locked with a simple structure without providing a complicated mechanism such as a lock forgetting prevention mechanism. The purpose is to provide a reader.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention urges each of the putt rollers to move in the direction of advancing into the card conveying path and regulates the position by a door block, so that the putt roller facing the magnetic head is The biasing force is set to be stronger than the closing action of the door block due to its own weight, and the distance between the facing surfaces of the drive roller and the put roller arranged to face the drive roller in a state where the door block is closed and is not locked, While being set to be larger than the distance between the facing surfaces of the magnetic head and the putt roller arranged to face the magnetic head,
When the door block is closed and locked, the pad roller is pressed against the magnetic head and the drive roller, respectively, and retracts against the biasing force.

(Operation) In the means having such a configuration, when the door block is forgotten to be locked, the pad roller comes into contact with the magnetic head, but there is a gap between the drive roller and the pad roller. Therefore, even if the magnetic card is inserted by mistake, the carrying force of the drive roller is not transmitted to the magnetic card.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1, 2, and 3, one end of the door block 8 of the card reader 1 is attached to the card reader main body by a screw 9. A door block 8 is installed so as to be openable and closable around the screw 9 as a fulcrum, and the door block 8 can be opened approximately 90 ° by a knob 8a provided on the front side of the upper surface thereof. Inside the main body of the card reader 1, a card carrying path 2 is provided so as to extend in a substantially horizontal direction, and a magnetic card is inserted from an entrance 3 provided on the front side of the card carrying path 2. It is supposed to be done. A drive roller 5 and a magnetic head 4 are arranged in parallel in the longitudinal direction of the card reader body at regular intervals in the width direction orthogonal to the card carrying direction. The drive roller 5 is rotationally driven by a drive source (not shown), and the magnetic card is taken into the card reader 1 by the rotation of the drive roller. The outer surface of the magnetic head 4 is slightly higher than the outer surface of the drive roller 5, and is formed so as to protrude toward the card running path 2. Therefore, a slight step is formed between the outer surface of the drive roller 5 and the outer surface of the magnetic head 4.

On the other hand, pad rollers 6 and 7 are attached to the middle portion of the door block 8 in the longitudinal direction at regular intervals in the width direction orthogonal to the card transport direction. The pad rollers 6 and 7 are arranged at positions where they contact the magnetic head 4 and the drive roller 5 with the door block 8 locked. A guide groove 20 is formed in the door block 8 at an intermediate portion in the longitudinal direction as shown in FIG. In the guide groove 20, the support shafts 11 of the pad rollers 6 and 7,
12 is supported so that it can move up and down, and the support shafts 11 and 12
Are rotatably supported by bearings 11a and 12a.
Further, plate springs 13 and 14 each having a substantially U shape are attached to the bottom surface of the door block 8 with screws or the like. The open ends of the leaf springs 13 and 14 are the support shafts 1 of the pad rollers 6 and 7.
The support shafts 11 and 12 are in contact with the bottom surfaces of the guide grooves 20 to regulate their positions. Also,
The leaf springs 13 and 14 urge the pad rollers 6 and 7 to advance toward the card conveying path 2 and can move back and forth along the guide groove 20 toward the card conveying path 2 side. There is. The outer surfaces of the pad rollers 6 and 7 are exposed to the card transport path 2 side through the openings 15 and 16 formed in the door block 8, and the outer surfaces are flush with each other. The leaf spring 13 is preset so as to have a biasing force larger than the closing action force due to the weight of the door block 8.

Next, in the magnetic card reader configured as described above, the door block 8 is completely locked and closed,
Door block 8 with the door block 8 locked and forgotten
The positional relationship between the magnetic head 4, the drive roller 5, the pad rollers 6 and 7, etc. in each state in which is opened will be described.

When the door block 8 is locked and closed, the magnetic head 4 and the drive roller 5 are arranged on the lower side of the card transport path 2 and the upper side of the card transport path 2 is
Pat rollers 6 and 7 are arranged respectively.

The plate spring 13 presses the putt roller 6 against the magnetic head 4, and the plate spring 14 presses the putt roller 7 against the drive roller 5, respectively.
Is transmitted to the magnetic card that has taken in, and this magnetic card is conveyed in the conveying path 2.

In the locked state, a reaction force due to the lock, which is larger than the biasing force of the leaf spring 13, acts on the outer surface of the pad roller 6 from the head surface of the magnetic head 4, so that the support shaft 11
Is separated from the bottom surface of the guide groove 20 against the urging force of the leaf spring 13, and the pad roller 6 is pressed against the magnetic head 4 while being slightly retracted upward along the guide groove 20 in FIG. .

Further, as shown in FIG. 1, when the door block 8 is forgotten to be locked, the support shafts 11 and 12 are pressed against the bottom surface of the guide groove 20 of the door block 8 by the elastic biasing force of the leaf springs 13 and 14. There is. When the door block 8 is forgotten to be locked, since the head 4 is slightly higher than the drive roller 5 and protrudes into the card transport path, only the pad roller 6 is pressed against the head surface of the head 4. Become. Here, since the leaf spring 13 has a biasing force stronger than the closing action force due to the weight of the door block 8, the pad roller 6 does not retract upward in FIG. In addition, the pad roller 6 can be kept pressed against the bottom surface of the guide groove 20. Therefore, the door block 8 as a whole does not further close due to its own weight, and between the outer surface of the pad roller 7 and the outer surface of the drive roller 5, the head surface of the head 4 and the outer surface of the drive roller 5 are provided. The gap C is formed by the amount of the step between them.

Further, in a state where the door block 8 is opened (shown by a chain double-dashed line in FIG. 3), the pad rollers 6 and 7 are separated from the card transport path 2.

Next, the operation of the above embodiment will be described.

In the apparatus of this embodiment, when the door block 8 is first closed and then locked, as described above, the pad roller 6 is attached to each of the magnetic head 4 and the drive roller 5.
And 7 are pressed together. As a result, a predetermined carrying force is transmitted to the magnetic card inserted from the entrance 3 by the rotation of the drive roller 5, and the reading or writing operation is normally performed.

On the other hand, when the door block 8 is forgotten to be locked (the state shown in FIG. 1), the outer surface of the pad roller 6 contacts the head surface of the magnetic head 4, but the outer surface of the drive roller 5 does not. The outer surface of the pad roller 7 is not in contact with each other, and the gap C is formed between the outer surface of the drive roller 5 and the outer surface of the pad roller 7 as described above. When a magnetic card is inserted between the magnetic head 4 and the putt roller 6 in this state, the taken-in card first comes into contact with the putt roller 6. Then, when the magnetic card enters between the putt roller 6 and the head surface of the magnetic head 4, the putt roller 6 rises. At this time, the urging force of the leaf spring 13 urging the pad roller 6 toward the bottom surface of the guide groove is larger than the closing action force of the door block due to its own weight.
At the same time, the door block 8 also rises together with the pad roller 6 via the screw to which the leaf spring 13 is attached.
Therefore, the door block 8 rises integrally with the pad roller 6 by the thickness of the magnetic card (about 0.2 mm in the case of a prepaid card), whereby the gap between the drive roller 5 and the pad roller 7 becomes a gap C. Expand further. Therefore, even if the magnetic card is accidentally inserted in the state where the lock is forgotten, the carrying force by the drive roller 5 is not transmitted to the magnetic card, and the magnetic card is not taken in. The set amount of the interval C can be set independently of the thickness of the magnetic card.
A very small amount of about 0.1 mm is enough. Further, the head surface of the magnetic head 4 and the outer surface of the drive roller 5 are arranged on the same plane, and one of the outer surfaces of both the pad rollers 6 and 7 is slightly projected so that a step is formed between the two. Even if the above is provided, the same action and effect can be obtained.

Further, when the door block 8 is opened, the pad rollers 6 and 7 are separated from the card conveying path 2, so that the conveying force of the drive roller 5 is not transmitted to the magnetic card and the magnetic card is taken in. There is no.

The present invention can be applied to all magnetic card readers such as paper cards and optical cards as well as prepaid cards and cash cards.

(Effect of the Invention) As described above, the present invention forms a gap between the drive roller and the pad roller while bringing the pad roller into contact with the magnetic head when the door block is forgotten to be locked. Since the layout relationship is adopted, it is possible to reliably prevent the magnetic card from being taken in if you forget to lock the door block, and eliminate the complicated mechanism such as the lock forgetting prevention mechanism and have a simple structure and reliability. It is possible to obtain a magnetic card reader having high performance.

[Brief description of drawings]

FIG. 1 is an explanatory cross-sectional view taken along the line AA in FIG. 2 showing a main part of a magnetic card reader according to an embodiment of the present invention,
2 and 3 are a plan explanatory view and a side explanatory view showing the appearance of the magnetic card reader shown in FIG. 1 ... Card reader, 2 ... Card transport path, 4 ... Magnetic head, 5 ... Drive roller, 6,7 ... Pat roller, 8 ... Door block, 13,14 ... Leaf spring.

Claims (1)

[Scope of utility model registration request] 1. A magnetic head and a drive roller are disposed on one side of a card transport path, and a pad roller is disposed on the other side of the card transport path so as to face the magnetic head and the drive roller. A door block that is arranged and opens the card transport path is provided. By supporting each of the pad rollers on the door block, each of the above-mentioned pad rollers becomes a magnetic head and a drive roller as the door block opens and closes. In a magnetic card reader configured to come into contact with and separate from each other, each of the pad rollers is biased in a direction of advancing into a card transport path, and its position is regulated by a door block so as to be opposed to the magnetic head. The urging force of the pad roller is set to be stronger than the closing action of the door block due to its own weight. The distance between the facing surfaces of the drive roller and the put roller opposed to the drive roller when the door block is closed and not locked is determined by the distance between the magnetic head and the put roller opposed to the magnetic head. When the door block is closed and locked, the pad rollers are pressed against the magnetic head and the drive roller, respectively, and are retracted against the biasing force. Card reader.