JPH0437342Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a card drive device suitable for miniaturization.

[Background Art] In recent years, the progress of information-related industries has been remarkable, and the amount of information being handled is increasing.

As recording media for recording such information, in addition to magnetic tapes and disk-shaped magnetic disks, optical recording disks that can perform high-density recording and high-speed reproduction have also come to be used.

Also, a system in which a PIN code, etc. is written on a card-shaped recording medium suitable for carrying and use, and this PIN code can be read by a reader to provide various services to the holder of the PIN code. has been realized.

When reading recorded information on the card-shaped recording medium (hereinafter abbreviated as "card"), the card is conveyed in one direction by a card drive device, a one-dimensional recording area is scanned by a magnetic head, and the recorded information is reproduced. I was trying to do this.

FIG. 6 shows a plan view of a conventional card drive device, and FIG. 7 shows a front view.

A rotary drive motor 3 is provided on one side of the base 2 in the longitudinal direction of the card drive device 1, and a pulley 4a attached to the rotating shaft of the motor 3 and a pulley 4b disposed on the other end of the base 2 belt 5
is spread over it.

Between the two pulleys 4a, 4b, two guide rods 6a, 6b are arranged in parallel to the longitudinal direction of the belt 5 at positions slightly higher than the upper surface of the belt 5. A card stand 7 is attached to each of the guide rods 6a, 6b, which is slidable in the axial direction of the guide rods 6a, 6b by providing holes on both sides thereof to fit into the guide rods 6a, 6b. A recess is provided on the upper surface of the card stand 7, and a card 8 can be inserted into this recess. As shown in FIG. 7, a pin 9 is provided in a portion of the card stand 7 facing the belt 5 so as to protrude downward.
A hole is provided in which the protruding pin 9 is inserted, so that the card stand 7 can be moved together with the card 8 on its upper surface in the direction X in which the belt 5 is moved (left and right in the figure).

An optical head 10 is mounted on the upper part facing the card 8.
The optical head 10 is movable in a direction Y (up and down in FIG. 6) perpendicular to the left-right direction in which the card 8 is moved by a drive means (not shown).

The movement width of the card stand 7 in the left and right direction is detected by optical sensors 11a and 11b provided on the left and right sides, and when the card stand 7 is moved to these positions, the rotation of the motor 3 is stopped and the motor 3 is rotated in the opposite direction. It's like this. Therefore, these optical sensors 11a, 11
The distance between b becomes the reciprocating movement range L of the card 8.

[Problems to be solved by the invention] In this case, in order to reciprocate the card 8, the motor 3 repeats forward and reverse rotation, and the rotation of the motor 3 becomes constant speed due to this forward and reverse rotation. It is necessary to read the image using the optical head 10.

In FIG. 5, a dotted curve E indicates the conveyance speed (absolute value) of the card 8 when the motor 3 moves the card 8 through a reciprocating motion range L.

The constant speed region D in FIG. 5 is much narrower than the reciprocating motion region L, and therefore,
Since the reciprocating movement range L must be set considerably larger than the length of the recording area of the card 8 in the left-right direction, the shape of the card drive device must be made large.

In addition, since the motor 3 repeatedly rotates forward and reverse, it is likely to be overloaded and its life will be shortened.
There is a problem in that it has to be made larger.

The present invention has been made in view of the above-mentioned points, and it is an object of the present invention to provide a card drive device that is compact and capable of reading or writing without error.

[Means and effects for solving the problem] In this device, a chain or a belt is stretched between the drive wheel and the driven wheel, which are attached to the output shaft of the rotary drive motor, and the drive wheel and the driven wheel are connected to the same drive wheel. one end of the drive plate is fixed to the chain or belt, the other end of the plate extends in a direction perpendicular to the chain or belt, and the card stand is attached to the connecting portion of the drive plate. are rotatably connected. As the rotary drive motor rotates, the connecting part reciprocates on a line connecting the rotation centers of the drive wheel and driven wheel, so the card stand reciprocates with the blade, shortening the start-up time and preventing the device in the drive direction. The size of can be reduced.

[Examples] Examples of the present invention will be specifically described below with reference to the drawings.

1 to 5 relate to an embodiment of the present invention,
Figure 1 is a front view of the card drive device, and Figure 2 is the front view of the card drive device.
The top view of the figure, Figure 3 is a sectional view taken along the line A-A in Figure 1,
FIG. 4 is a perspective view of the drive plate portion, and FIG. 5 is a diagram showing the conveyance speed of the card in the reciprocating movement range.

In these figures, reference numeral 21 denotes a card drive device, and a rotation drive motor 23 is disposed on one longitudinal side of a base plate 22 of this card drive device 21. As shown in FIG. This rotary drive motor 23
is attached to the base plate 2 by means of a bracket 24 with its output axis in a direction perpendicular to the longitudinal direction.
It is fixed at 2. A sprocket-type drive wheel 25 is attached to the output shaft of the rotary drive motor 23.
is attached to the shaft. Further, the rotational drive motor 23
A bracket 26 is mounted on the base plate 22 in the longitudinal direction opposite to the side on which the drive wheel 2 is disposed.
A sprocket-type driven wheel 27 having the same drive diameter as the drive wheel 5 and disposed in parallel axes is rotatably mounted. The drive wheel 2
A roller chain 28 is stretched between the roller chain 5 and the driven wheel 27. Further, two guide rods 29a and 29b parallel to the longitudinal direction of the roller chain 28 are arranged between the drive wheel 25 side and the driven wheel 27 side. The guide rods 29a, 29b are connected to side plates 30a, 30 provided at both ends of the base plate 22 in the longitudinal direction.
It is supported by b. A card stand 31 formed into a substantially rectangular flat plate shape is disposed between the guide rods 29a and 29b. This card stand 3
1 has guide rods 29a and 29 on its edges, respectively.
A plate-shaped guide portion 32, .
a and 29b are fitted, and the axial direction (left and right direction)
It is installed so that it can slide freely. The guide portions 32, .
On the b side, two locations are provided at both ends of the card stand 31. A shallow groove-shaped recess 34 is formed on the upper surface of the card stand 31, and a card 35 is inserted into this recess 34. Further, a connecting plate 36 is provided at the end of the guide portion 32 fitted to the guide rod 29a on the roller chain 28 side. This connecting plate 36 is formed into an elongated plate shape, and one end thereof is connected to the guide portion 3.
The roller chain 28 is fixed to one end of the roller chain 28, and the other end thereof extends to approximately the center of the parallel portion of the roller chain 28.

On the other hand, one of the link plates 37 on the card stand 31 side that constitutes the roller chain 28 has a shape in which a drive plate 38 portion is integrally formed. This drive plate 38 portion is formed into an elongated plate shape, and its end side extends toward the center of the parallel roller chain 28 . At the end face of the drive plate 38 on the card stand 31 side, the drive wheel 2
A drive pin 39 serving as a connecting portion is provided protruding from a portion located on a plane including the rotation axes of the driven wheel 27 and the driven wheel 27 in a direction perpendicular to the end surface of the drive plate 38 . The end side of this drive pin 39 is rotatably engaged in a hole 10 formed on the end side of the connection plate 36, and
1 is connected.

Incidentally, reference numeral 41 is an optical head for reading information recorded on the card 35.

In such a configuration, first, the rotational drive motor 2
3, the power is turned on, and the drive wheel 25 rotates clockwise, for example, as shown in FIG. The rotation of the drive wheel 25 drives the roller chain 28. As a result, the drive plate 3
When the link plate 37 formed with eight parts is on the upper side, the link plate 37 moves to the right at a constant speed between the axes of the driving wheel 25 and the driven wheel 27 (area G in FIG. 1). .
Since the card stand 31 is connected to the drive pin 39 portion of the link plate 37, it moves rightward along the guide rods 29a and 29b. Link plate 37 reaching the upper side of driven wheel 27
rotates the outer circumferential portion of the driven wheel 27 (area H in FIG. 1) by half a rotation while keeping the drive pin 39 at the center of rotation of the driven wheel 27.
During this time, the drive pin 39 is maintained at the rotation center of the driven wheel 27, so the card stand 31 is stopped. Next, link plate 3 that has reached the bottom
7 moves leftward between the axes of the driven wheel 27 and the drive wheel 25 (area G as above).
The card stand 31 moves in the opposite direction (to the left) along the guide rods 29a, 29b. Link plate 37 reaching the lower side of drive wheel 25
Similarly to the above, the drive wheel 25 rotates around the outer peripheral portion (area I in FIG. 1) by half a turn while keeping the drive pin 39 at the center of rotation of the driven wheel 27. During this time, the card stand 31 is stopped. By repeating this operation, the card stand 3
1 reciprocates in a predetermined range of motion. Therefore, card stand 3
The optical head 41 performs reading of the card 35 placed on the card 1 .

The card 35 is driven by the above operation, but since the rotary drive motor 23 is driven at a constant rotation, the time required for the card stand 31 to rise to a constant speed can be shortened, and reading can be performed without errors. It can be carried out. Therefore, the reciprocating motion range L' can be made shorter for the same constant speed range D than in the conventional case where the motor is switched between forward and reverse rotation. In addition, since the drive wheel 25 and the driven wheel 27 can be arranged inside the reciprocating motion range, the longitudinal direction of the card drive device 21 can be shortened.
Can be made smaller. Furthermore, in this embodiment, an optical sensor or the like for detecting the position of the card stand 31 is unnecessary.

In the above embodiment, the connection portion of the drive plate 36 is connected to the drive wheel 25 and the driven wheel 2.
It suffices if it is provided in a portion located within a plane including the rotation axis of No. 7. In addition to the roller chain 28, the present invention can also be applied to a belt driven by a wheel that can be provided with a drive plate. moreover,
In this embodiment, the connection plate 36 fixed to the card stand 31 is connected to the connection part of the drive plate 38, but the moving position of the card stand 31 is set to the rotation axis of the drive wheel 25 and the driven wheel 27. It may be lowered to the core side and connected directly.

Note that the present invention is not limited to reading using the optical head 41, but can also be applied to writing, and can also be applied to devices that can record or reproduce using a magnetic head.

[Effects of the invention] As explained above, according to the invention, a card-shaped recording medium is stored along a chain or belt that is stretched between a drive wheel driven by a rotary drive motor and another driven wheel of the same diameter. A drive plate having a connection portion that connects the card stand and the chain or belt in a plane including the rotation axes of the drive wheel and the driven wheel is attached to the chain or belt. Because of this, the card drive device can be made smaller and reading or writing can be performed without errors.

[Brief explanation of the drawing]

1 to 5 relate to an embodiment of the present invention,
Figure 1 is a front view of the card drive device, and Figure 2 is the front view of the card drive device.
The top view of the figure, Figure 3 is a sectional view taken along the line A-A in Figure 1,
FIG. 4 is a perspective view of the drive plate portion, FIG. 5 is a diagram showing the conveyance speed in the reciprocating range of the card, FIGS. 6 and 7 are related to the conventional example, and FIG. 6 is a plan view of the card drive device. , FIG. 7 is a front view of FIG. 6. 21... Card drive device, 23... Rotation drive motor, 25... Drive wheel, 27... Driven wheel, 28... Roller chain, 29a, 29b
... Guide rod, 31 ... Card stand, 35 ... Card, 36 ... Connection plate, 37 ... Link plate, 38 ... Drive plate, 39 ... Drive pin, 41 ... Optical head.

Claims (1)

[Scope of utility model registration request] A drive wheel mounted on the output shaft of a rotary drive motor for at least one of recording information on a card-shaped recording medium using an optical head or a magnetic head, and reproducing recorded information. In the card drive device, a card stand is provided, in which a chain or a belt is stretched between the drive wheel and the other driven wheel, and the recording medium is movable along the chain or belt. The drive plate is formed to have the same diameter, one end of the drive plate is fixed to the chain or belt, and the other end of the plate extends in a direction perpendicular to the chain or belt; A card driving device characterized in that a connecting portion is provided in a portion located within a plane including a rotational axis of a driven wheel, and the card stand is rotatably connected to the connecting portion.