JPH0441411Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an imprint mechanism of a transaction operation device, and particularly to a structure for rotating a credit card.

2. Description of the Related Art In recent years, transaction operating devices such as automatic teller machines and automated tellers machines (ATMs) have been widely used at counters of financial institutions as part of computer banking systems. These devices are usually equipped with credit card and bankbook readers;
Transactions such as cash payments and deposits are performed using a credit card or a bankbook.

The details of the transaction are entered in the bankbook when the bankbook is used, and a receipt is issued when the transaction is made only with a credit card without using the bankbook.

When issuing a receipt, embossed data such as the customer's name on the credit card is imprinted on a continuous sheet of paper, the details of the transaction are printed, and the receipt is created by cutting it. It is designed to be ejected together with the card into the card slot.

[Conventional technology]

The conventional method will be described below with reference to FIGS. 1 to 7, taking an automatic teller machine as an example.

Figure 1 is a perspective view illustrating a bulk deposit automatic teller machine to which the present invention is applied, and Figure 2 is A-A in Figure 1.
3 is a partial sectional view taken along line BB in FIG. 1, FIG. 4 is a side view schematically showing the imprint mechanism in FIG. 3, FIG. 5 is an explanatory diagram of FIG. 4, and FIG. 7 is a plan view schematically showing the rotation mechanism, and FIG. 7 is a view taken in the direction of arrow C in FIG. 6.

In Fig. 1, a card insertion slot 1 is provided on the upper right side of the front of the device, a passbook insertion slot 2 for inserting a passbook is provided on the left side, and a bill insertion slot 3 and a return slot 4 are provided on the left side of the lower operation panel. On the right side, a display 5 for guiding and displaying operation details to the customer and a keyboard 6 for inputting deposit amounts and the like are arranged.

As shown in FIG. 2, the inside of the device includes a read/write section 7a that reads and writes the magnetic stripe of the passbook 11 behind the upper passbook insertion slot 2 (on the right side in the figure), and a read/write unit 7a that reads and writes the magnetic stripe of the passbook 11 and the journal paper 20. A printer section 8a is provided for printing the contents.

The bill slot 3 has a payout section 9 having a pick engagement pin R1 and the like that feeds out the banknotes 10 that have been inserted.
A discrimination section 12 for discriminating the authenticity, denomination, etc. of the inserted banknotes 10 is arranged in the center of the device on the right side.

Below the discrimination section 12, there is a pool section 13 for pooling banknotes 10 and a storage box 14 for storing banknotes 10.
are placed.

The conveyance path indicated by the dashed line in the figure is provided with feed rollers R2, R3, etc. for conveying the banknotes 10, and a switching gate G1 is provided at a branch point of the conveyance path.

A pusher 13a is arranged in the pool part 13 to push the pooled banknotes 10 into the storage box 14.

Further, behind the card insertion slot 1 in FIG. 3, there are provided a read/write section 7b for reading and writing the magnetic stripe of the credit card 17, and a printing section 8b for printing transaction details on a receipt.

The printing section 8b includes an imprint section 8c and a printer section 8d.

With this configuration, when making a deposit using this device, the customer first presses the deposit button to indicate his/her intention as shown in FIG. insert.

When the passbook 11 is conveyed, the read/write section 7a reads the magnetic stripe on the back of the passbook to confirm the account number, etc. The customer then receives 10 banknotes.
are inserted into the bill slot 3 all at once.

The inserted banknotes 10 are fed out one by one by the pick engagement pin R1 and the like and sent to the discrimination section 12 one by one. In the discrimination section 12, the size of the banknote 10 is first determined by the sensor S1, and if the size is not the normal size, the size of the banknote 10 is determined by the sensor S1.
An NG signal is sent to the control unit 16 and the bill 10 is returned to the return slot 4.

If it is a genuine banknote 10, the denomination is determined based on the size, and the authenticity and denomination are further determined by the magnetic head H1. When the denomination determined by the sensor S1 and the denomination determined by the magnetic head H1 match, an OK signal is sent to the control section 16 when the bill is a genuine bill, and an NG signal is sent to the control section 16 when they do not match, that is, when the bill is a counterfeit bill.

The control unit 16 causes the switching gate G1 to perform a switching operation based on the sent discrimination information. The switching gate G1 is normally in an OFF state and is set so as to send the banknotes 10 passing between the sending engagement pins R2 and R3 to the pool section 13. Identification section 12
While the verification result is OK, this state is maintained and the genuine banknotes 10 are sent to the pool section 13.

The control unit 16 also counts the amount and displays it on the display. When the customer confirms that the displayed amount matches the deposited amount and presses the confirmation button on the keyboard, the deposit amount is printed on the passbook 11.
The transaction details are printed on the journal and wound into the device, and the passbook 11 is returned from the passbook slot to complete the transaction.

When one transaction is completed, 10 banknotes are worth 1 pusher.
3a to be pushed into the storage box 14 and stored.

Further, the total amount for the day is displayed on the integration counter 15.

If a counterfeit bill is mixed in the inserted bill 10, the control unit 16 that receives the NG signal issues a command, operates the switching gate G1 to switch the bill conveyance path, and transfers the counterfeit bill to the return slot 4. have it returned.

Credit card 17 without using a passbook
When making a deposit using a credit card, the credit card 17 is inserted through the card insertion slot 1 as shown in FIG.

When the credit card 17 is inserted into the card insertion slot 1 and reaches the read/write section 7b, the read/write section 7b reads the information on the magnetic stripe on the back of the credit card 17 and confirms the account number.

After that, when bills are inserted, storage processing is performed in the same manner as described above.

The credit card 17 is connected to the read/write section 7.
The embossed data of the credit card is sent to the imprint unit 8c located behind the printer unit 8c, and the embossed data of the credit card is transferred to the two-ply pressure-sensitive continuous paper 21 on which the transaction details have already been printed by the printer unit 8d. The dowel pin presses and moves to imprint.

One sheet of imprinted continuous paper 21 is cut by a cutter (not shown) and inserted into the card insertion slot 1 along with the credit card 17 as a receipt.
is discharged. The other sheet of continuous paper 21 is wound up in the device as a journal.

Deposits can be made automatically using the methods described above.

Now, to explain the imprint part 8c in detail, the fourth
Credit card 1 sent as shown in the diagram
Fixed guides 82 and 83 are provided on both sides of the turntable 81 that holds the credit card 17 to guide both edges of the credit card 17 in the longitudinal direction.

The embossment 17a of the credit card 17 is located on the upper side, and the engagement pin 84 imprinted above the embossment 17a with a gap is axially aligned in a direction perpendicular to the longitudinal direction of the credit card 17. It is arranged so that

The engagement pin 84 can be moved up and down (in the direction of arrow A in the figure) by a drive mechanism (not shown). Further, the roller 84 rolls in the longitudinal direction of the credit card 17 while pressing the embossing 17a.

The pressure-sensitive coloring continuous paper 21 is embossed 17a.
and the engagement pin 84.

With this configuration, when imprinting is performed, the engagement pin 84 moves in the direction of arrow A in the figure, as shown in FIG. Press
Thereafter, it rolls and moves to the other end of the embossing 17a, where it is imprinted.

In this way, the embossed data such as the customer's name is imprinted on the continuous paper 21, and after imprinting, the continuous paper 21 is transported to the left in the figure and cut into a predetermined length by a cutter mechanism (not shown). .

At this time, the credit card 17 is provided with a magnetic stripe in the form of a band along the length of the card, so that a large amount of transaction data can be written on the magnetic stripe. In addition, the emboss data is
Since it is composed of multiple embossed characters, numbers, symbols, etc., it is necessary to emboss it horizontally along the length of the credit card so that many of these characters can be recorded on the credit card. Letters, etc. are arranged.

On the other hand, since the characters used to print transaction data are mainly numbers, they are written horizontally and arranged in the width direction of the continuous paper 21.

Therefore, the transaction data indicating the amount printed in the horizontal direction of the continuous paper 21 is perpendicular to the embossed data inserted in the vertical direction of the credit card 17 at the imprint portion 8c.

That is, the credit card 17 inserted vertically from the card insertion slot 1 with the short edge toward you needs to be rotated 90 degrees at the imprint section 8c during the above-described imprinting.

The conventional rotating mechanism of the credit card described above has a structure shown in FIGS. 6 and 7, as described in, for example, Japanese Patent Laid-Open No. 56-92091.

The conventional rotation mechanism includes a main shaft 22 which is rotated by a motor (not shown) via a belt 34 and a pulley 35, a cam 23 fitted to the main shaft 22, and a pin 24 protruding from the cam 23. A crank lever 25 that is freely engaged, a rotating lever 27 that is rotatably connected to the crank lever 25 with a pin 26, and an elongated hole 2 of the rotating lever 27.
A slidable sliding member 30 connected to a shaft 29 loosely inserted into the rotary lever 2
7 and a turntable 81 rotatably locked.

The sliding member 30 is slidably fitted to the guide rail 33, and the rotating lever 27 is rotatably locked to the main body member by a support shaft 32 between the pin 26 and the pin 31.

Therefore, credit card 17 is indicated by arrow C.
When the main shaft 22 is inserted into the turntable 81 from the direction shown in FIG.

Accordingly, the cam 23 is similarly rotated 180 degrees, and the crank lever 25 is moved to the position 25' indicated by the two-dot chain line in the direction of the arrow E. Due to the movement of the crank lever 25, the rotating lever 27 is rotated 90 degrees to 27' indicated by a chain double-dashed line in the direction of arrow G using the support shaft 32 as a fulcrum. For this purpose, the turntable 81 engaged with the rotation lever 27 is similarly rotated 90 degrees and moved to a position 81' indicated by a two-dot chain line.

In this state, the above-described imprint is performed on the continuous paper 21, but when the imprint is completed, the main shaft 22 and the cam 23 are again rotated another 180 degrees in the direction of arrow D in the same manner as described above.
Move the crank lever 25' in the direction of arrow F,
Return to the original position of 25.

As a result, the rotating lever 27' also rotates in the direction of arrow H and returns to the original position 27, and the turntable similarly rotates and returns to the original position 81.

[The problem that the idea aims to solve]

On the other hand, in order to print the transaction data and the embossed data horizontally on the receipt sheet in parallel without oblique lines and with good appearance, the rotation angle of the turntable must be exactly 90 degrees.

In the conventional rotation mechanism described above, in order to rotate the turntable 90 degrees with high precision and stop it, the cam 23 driven by the motor must be rotated intermittently by 180 degrees with high precision, and the length of the crank lever 25 must be The length of the rotary lever 27 between the pin 26 and the support shaft 32, and the length of the rotary lever 27 between the support shaft 32 and the pin 31 must be highly accurate to predetermined dimensions, and the pins 24, 26, the support shaft 32. It is an essential condition that the shaft 29 and the respective holes or oblong holes of the crank lever 25 and rotating lever 27 that are fitted thereto are machined and assembled with high precision without play.

At this time, the motor itself, such as a step motor, is driven to rotate intermittently with high precision. However, since slippage between the pulley and the belt cannot be avoided, it is difficult to regulate the rotation angle of the cam 23 to 180 degrees with high precision.

Further, it takes a large number of man-hours to process and assemble the link elements such as levers with high dimensional accuracy and the dimensional accuracy of each fitting part.

That is, the conventional structure suffers from the problem that the rotation angle of the turntable 81 cannot be guaranteed to be 90 degrees with high precision, resulting in poor print quality on receipts, and efforts are being made to improve the print quality. However, there was a problem in that it was necessary to increase the processing accuracy and assembly accuracy of each mechanical element, resulting in high costs.

The present invention was created in view of these points, and aims to provide a low-cost rotation mechanism that provides high quality receipt printing.

[Means to solve the problem]

In order to achieve the above object, the present invention rotates the credit card conveyed to the imprint part of the transaction operation device at a predetermined angle, that is, 90 degrees, in a horizontal plane, as illustrated in FIGS. 8 and 9. In the rotating mechanism for moving the credit card 17, a turntable 81 that holds the credit card 17 horizontally is held by a holding fitting 36 having an arcuate outer peripheral surface.

A pinion shaft 38 is provided perpendicularly to the center of the circular arc-shaped outer peripheral surface of the holding fitting 36, and the pinion 37 is fixed to this pinion shaft 38.

Then, at a position on the arcuate outer peripheral surface of the holding fitting 36 at a predetermined angle, that is, on a radial line that intersects with 90 degrees,
A pair of locking grooves 49 are provided, each locking groove 49
The opening shall be a tapered surface.

On the other hand, there are provided a cam 42 which is intermittently driven by a step motor for half a rotation, and a sliding metal fitting 40 which is connected to the cam 42 via a crank 41 and which performs a linear reciprocating motion in conjunction with the rotational movement of the cam 42.

Further, a rack 39 that meshes with the pinion 37 is formed on the side surface of the sliding fitting 40, so that the pinion 37 is rotated by a predetermined angle, that is, 90 degrees, by 1/2 rotation of the cam 42.

In addition, a fulcrum metal fitting 45 having a pin portion 51 is installed on the main body member, and an engagement pin 47 that slides on the arcuate outer circumferential surface is provided at the tip portion, and the base portion fits into the pin portion 51. 45 is provided with a lever 46 which is swingably supported, and further provided with a spring means for biasing the lever 46 in the direction in which the engagement pin 47 is pressed against the arcuate outer circumferential surface.

Then, when the pinion 37 rotates by a predetermined angle, that is, 90 degrees, the engagement pin 47 is pushed into the locking groove 49.
The holding fitting 36 is configured to stop rotating at a predetermined position.

[Effect]

When the holding fitting 36 rotates and reaches a position where the locking groove 49 provided on the arcuate outer circumference faces the engagement pin 47 attached to the tip of the lever 46, the lever 46 is biased. The engaging pin 47 is pushed into the locking groove 49, and the locking groove 49 and the engaging pin 47 fit together.

At this time, since the engagement pin 47 is fixed to the lever 46, the rotation of the holding metal fitting 36, that is, the turntable 81, stops at that position, and the rotation does not proceed any further, nor is it possible to rotate backward in the opposite direction. do not have.

Generally, in a gear mechanism, a certain degree of backlash is required in order for the gears to mesh and rotate smoothly.

However, the accuracy of the rotation angle of the turntable 81 of the present invention is regulated by the set position of the locking groove 49, and depends only on the accuracy of the locking groove 49, and is dependent on other factors, such as the rotation angle of the pinion 37. It is not affected by the accuracy, the amount of backlash between the pinion 37 and the rack 39, the length of the lever 46, the length of the crank 41, etc.

Therefore, in the rotation mechanism of the present invention, the rotation angle of the cam 42 does not need to be exactly 180 degrees, and the dimensional accuracy and assembly accuracy of other components are
It does not need to be highly accurate.

On the other hand, it is extremely easy to provide the locking groove 49 on the arcuate outer circumferential surface of the holding fitting 36 at a position on a line that exactly intersects at 90 degrees at the center of the pinion shaft by using a commercially available indexing board. It's easy.

As mentioned above, in the rotating mechanism of the present invention, the turntable rotates 90 degrees accurately, so the printing quality of the receipt is high, and the assembly and adjustment work is easy and low cost.

〔Example〕

The present invention will be specifically explained below with reference to the drawings. Note that the same reference numerals indicate the same objects throughout the figures.

FIG. 8 is a plan view of one embodiment of the present invention, and FIG. 9 is a side view of one embodiment of the present invention.

In the figure, 36 is a holding metal fitting, 37 is a pinion, 38 is a pinion shaft, 39 is a rack 39, 40
41 is a crank, 42 is a cam, 45 is a fulcrum metal fitting, 46 is a lever, 47 is an engagement pin, 49 is a locking groove, 50 is a stopper, 51 is a pin portion, 81 is a turntable, and 17 is a credit card.

As shown in FIG. 8, the turntable 81 is held on its side by holding fittings 36. An arc-shaped outer circumferential surface is provided on the outer circumference of the horizontally extending flat plate portion of the holding fitting 36. A pair of semicircular locking grooves 49 are provided on the arcuate outer circumferential surface of the holding fitting 36 at positions on the rays intersecting at 90 degrees.

The width of this locking groove 49 is such that an engaging pin 47 of a lever 46, which will be described later, is tightly fitted into the locking groove 49, and by making the opening part a tapered surface, the pinion 37 will not rotate 90 degrees accurately. Also, engaging pin 4
7 can be easily fitted into the locking groove 49.

A pinion shaft 38 is provided vertically downward at the center of this arcuate outer peripheral surface, and is a main body member (not shown).
This pinion shaft 38 is vertically supported. Therefore, the holding fitting 36 can rotate in a horizontal plane about the pinion shaft 38. Further, a pinion 37 is fixed to a pinion shaft 38.

A rack 39 is provided on a part of the sliding fitting 40, which is mounted to allow linear reciprocating movement in the horizontal direction (this guide mechanism is not shown), and the rack 39 and the pinion 37 are brought into mesh with each other.

The sliding fitting 40 is connected to the crank 4 via a pin 44.
It is connected to 1. Further, the other end of the crank 41 is formed into a ring shape, and this ring portion is slidably fitted to the outer periphery of a cam 42 that is eccentrically attached to the drive shaft 43.

The drive shaft 43 performs half-rotation intermittent motion by a step motor (not shown).

Therefore, when the cam 42 rotates 1/2, the sliding fitting 40 makes a linear movement in the outward path in a predetermined direction, either left or right, and this linear movement of the rack 39 causes the pinion 37 meshed with the rack 39 to move. Rolls in a predetermined direction of rotation.

After the cam 42 once stops and a desired time has elapsed, the cam 42 makes a further 1/2 turn in the same direction, and the sliding fitting 40 makes a return linear movement, and the pinion 37 meshed with the rack 39 rotates in the opposite direction.

In addition, the rack 39 and pinion 37 are rotated by 1/2 rotation of the cam 42 by setting the gear specifications as desired.
The pinion 37 is configured to rotate 1/4 turn.

On the other hand, a fulcrum metal fitting 45 having a pin portion 51 is installed on the main body member. Then, attach the base to the pin part 51
By fitting into the lever 46, the lever 46 is mounted so as to swing around the pin portion 51.

This lever 46 is mounted so as to be in contact with the arcuate outer peripheral surface of the holding fitting 36, and has an engagement pin 47 at its tip that slides on the arcuate outer peripheral surface.

Further, a torsion spring 48 is attached coaxially with the pin part 51, and the torsion spring 48 is attached to the tip end side of the lever 46.
is biased in the direction of the pinion shaft 38.

In this way, the torsion spring 48 causes the lever 4 to
6 is biased, the engagement pin 47 attached to the tip of the lever 46 is pressed in the direction of arrow P, that is, against the arcuate outer peripheral surface of the holding fitting 36.

The operation of rotating the credit card 17 by 90 degrees using the rotation mechanism configured as described above will be explained.

When a sensor (not shown) detects that the credit card 17 is inserted into the turntable 81 from the direction of arrow C, the drive shaft 43 rotates 180 degrees in the direction of arrow D as shown in FIG. As a result, the cam 42 fixed to the drive shaft 43 also rotates 180 degrees and moves to the position 42' indicated by the two-dot chain line.

Therefore, the crank 41 whose one end is formed into a ring shape and whose inner surface is in sliding contact with the outer periphery of the cam 42 also moves in the direction of arrow L, and the crank 41
The pin 44 engaged with 1 is moved to the position 44'.

With this operation, the sliding fitting 40 linearly moves in the direction of arrow L by the amount of movement of the pin 44, and the pinion 37 meshes with a rack 39 provided on a part of the sliding fitting 40.
Rotate 90 degrees in the direction of arrow N.

As the pinion shaft 38 rotates, the holding fitting 36 rotates 90 degrees around the pinion shaft 38, one of the locking grooves 49 reaches the position of the engagement pin 47, and the engagement pin 47 moves into this locking groove. 49.

That is, the turntable 81 held by the holding fitting 36 is rotated by 90 degrees to the point 8 indicated by the two-dot chain line.
Move to position 1'.

Now perform the imprint operation as explained in the conventional technique, and after the imprint process is completed, drive shaft 4
Rotate 3 further 180 degrees in the direction of arrow D to rotate cam 4.
Return from position 2' to position 42, that is, the original position.
Then, the pin also moves in the direction of arrow M from the position 44' and returns to the original position 44, and the holding fitting 36 (ie, the rack 39) follows and moves backward.

Therefore, the pinion 37 rotates 90 degrees in the direction of arrow O, and the holding fitting 36 rotates 90 degrees in the opposite direction. Then, the other locking groove 49 reaches a position corresponding to the engagement pin 47, and the engagement pin 47 is forced into engagement with the other locking groove 49.

That is, the turntable held by the holding fitting 36 rotates 90 degrees in the opposite direction from the position 81' and returns to the original position 81.

Generally, in a gear mechanism, a certain degree of backlash is required in order for the gears to mesh and rotate smoothly. If there is no backlash, the frictional force will become excessively large and rotation will become impossible. Therefore, in a gear mechanism, a backlash is always necessary, regardless of its size.

Furthermore, providing a desired amount of backlash on a gear can be easily achieved during gear cutting using a hobbing machine or the like.

Note that it is desirable to consciously increase the backlash between the pinion 37 and the rack 39 by a considerable amount in the present invention.

This is because if the backlash is small and the pinion 37 and rack 39 mesh closely,
The rotational force of the pinion 37 becomes stronger, and the pinion 37
This is because if the rotation angle is less than 90 degrees, the engaging pin 47 cannot be pushed into the locking groove 49 and fitted.

Although the step motor rotates by an accurate predetermined angle, since the gear mechanism has a backlash as described above, the rotation angle of the pinion shaft 38 is not exactly 90 degrees.

However, the accuracy of the rotation angle of the holding fitting 36 of the present invention, that is, the turntable 81, is determined by the accuracy of the locking groove 49. Therefore, the above-mentioned gear breakdown is performed on the turntable 8.
This has no effect on the accuracy of the rotation angle.

Further, the rotation angle of the cam 42 does not need to be exactly 180 degrees, and the dimensional accuracy and assembly accuracy of other components do not need to be highly accurate.

On the other hand, it is extremely easy to provide the locking groove 49 on the arcuate outer circumferential surface of the holding fitting 36 at a position on a line that exactly intersects at 90 degrees at the center of the pinion shaft by using a commercially available indexing board. It's easy.

As mentioned above, in the rotating mechanism of the present invention, the turntable rotates 90 degrees accurately, so the printing quality of the receipt is high, and the assembly and adjustment work is easy and low cost.

[Effect of idea]

As explained above, in the present invention, a locking groove is provided on the turntable side, and an engaging pin provided at the tip of the lever is pushed into and engaged with the locking groove to control rotation of the turntable in a predetermined manner. The turntable of the credit card rotates precisely 90 degrees, resulting in high quality receipt printing.

Furthermore, the cost is low because it is not required that the mechanical elements be processed with high precision and assembled with high precision.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an automatic teller machine to which the present invention is applied, Fig. 2 is a sectional view taken along line AA in Fig. 1, Fig. 3 is a partial sectional view taken along line BB in Fig. 1, and Fig. 4 is a sectional view taken along line AA in Fig. 1. Fig. 3 is a side view of the imprint mechanism, Fig. 5 is an explanatory view of Fig. 4, Fig. 6 is a plan view of the conventional example, Fig. 7 is a side view of the conventional example, and Fig. 8 is an implementation of the present invention. Example plan, No. 9
The figure is a side view of an embodiment of the present invention. In the figure, 1 is the card insertion slot, 8c is the imprint section, 1
7 is credit card, 17a is embossed, 3
6 is a holding metal fitting, 37 is a pinion, 38 is a pinion shaft, 39 is a rack, 40 is a sliding metal fitting, 41 is a crank, 42 is a cam, 45 is a fulcrum metal fitting, 46 is a lever, 47 is an engagement pin, 48 is a screw 50 is a stopper, 51 is a pin portion, and 81 is a turntable.

Claims (1)

[Scope of Claim for Utility Model Registration] A rotating mechanism for rotating a credit card 17 conveyed to an imprint section of a transaction operating device by a predetermined angle within a horizontal plane, A turntable 81 to be held; and a holding fitting 3 having an arcuate outer peripheral surface and rotatably mounted horizontally to hold the turntable 81.
6, a pinion 37 fixed to a perpendicular pinion shaft 38 provided at the center of the circle of the arcuate outer peripheral surface, and a pinion 37 fixed to a vertical pinion shaft 38 provided at the center of the circle of the arcuate outer peripheral surface; a pair of locking grooves 49 with tapered openings; a cam 42 that is intermittently driven by a step motor for half a rotation; and a cam 42 that is connected to the cam 42 via a crank to control the rotational movement of the cam 42. a sliding fitting 40 that performs linear reciprocating motion in conjunction with the pinion 37; and a sliding fitting 40 that engages with the pinion 37.
a rack 39 formed on a side surface of the cam 42 to rotate the pinion 37 by a predetermined angle by a 1/2 rotation of the cam 42; a fulcrum metal fitting 45 installed on the main body member and having a pin portion 51; A lever 46 has an engagement pin 47 that slides on an arcuate outer circumferential surface, and is pivotally supported on the fulcrum metal fitting 45 so as to be swingable by fitting the base portion to the pin portion 51; and the engagement pin 47. spring means for biasing the lever 46 in a direction in which the lever 46 is pressed against the arcuate outer peripheral surface, and when the pinion 37 rotates by a predetermined angle, the engagement pin 47 is pushed into the locking groove 49. A rotating mechanism for a credit card, characterized in that the rotation of the holding fitting 36 is stopped at a predetermined position.