JP4473191B2 - Recording media drive device - Google Patents

Description

  The present invention relates to a recording medium driving apparatus, and more particularly to a recording medium driving apparatus in which a recording medium provided with a movable connector on the distal end side in the insertion direction is inserted and held in a holder and automatically conveyed.

  Conventionally, a recording medium on which various data has been recorded is manually inserted and held in a holder, and this holder is automatically transported into the housing by a transport mechanism. A recording medium driving device is known in which a movable connector and a fixed connector disposed in a housing are connected (see, for example, Patent Document 1). Here, the movable connector consists of a plurality of clip-shaped female terminals arranged at a predetermined pitch, and the fixed connector consists of a plurality of pin-shaped male terminals arranged at the same pitch as the female terminals. The transport mechanism includes a reduction gear train that rotates using a motor as a drive source, and a rack that meshes with a final gear of the reduction gear train, and this rack is fixed to a side surface of the holder.

In the recording medium driving apparatus schematically configured as described above, when the motor rotates in one direction after the recording medium is inserted and held in the holder, the holder is linearly moved toward the inside of the casing by the transport mechanism using the motor as a driving source. Move on. When the holder moves to the mounting position in the housing, the fixed-side connector disposed in the housing is inserted into the movable connector of the recording medium held by the holder, and the recording medium is mounted in the apparatus. Connector is connected. In addition, when the motor rotates in the opposite direction to the above with the recording medium mounted, the holder moves linearly from the mounting position toward the front of the housing, and accordingly, the movable connector comes out of the fixed connector. After being disconnected, the recording medium is automatically conveyed to the initial position where it can be ejected.
Japanese Patent Laying-Open No. 2004-348812 (page 5-7, FIG. 4)

  In the conventional recording medium driving device described above, the recording medium held by the holder is automatically conveyed by a conveyance mechanism using a motor as a driving source, and the movable side connector of the recording medium is moved relative to the fixed side connector using the conveyance force. The standard value of the connector insertion / extraction force that satisfies this operation is quite high (for example, 2 kg · f). Therefore, if the motor torque is insufficient, the movable side connector and the fixed side connector are securely connected. Cannot connect / disconnect. For this reason, it is necessary to increase the torque of the motor. However, when a high torque motor is used, it is difficult to increase the conveyance speed of the recording medium or the mechanical structure including the conveyance mechanism has high mechanical strength. Various problems occur, for example, strength is required.

  The present invention has been made in view of the actual situation of the prior art, and an object of the present invention is to provide a recording medium driving device capable of realizing a reliable connector connection even when a recording medium is automatically conveyed using a motor. There is.

In the present invention, when a user manually inserts a recording medium into a holder, the movable side connector and the fixed side connector are connected while the holder is temporarily locked, and the locked state of the holder is changed after the connector is connected. The first mechanism is released and automatically transported by the transport mechanism, and the transport mechanism rotates with the motor as a drive source, and the first pivot arm rotates in conjunction with the first pivot arm to drive the holder. Two pivot arms, and the first and second pivot arms are connected to be coaxially rotatable, and the first and second pivot arms are rotated together so that the first and second pivot arms rotate integrally. Elastically biased in the engaging direction.

The recording medium driving device according to the present invention allows the holder to be fixed with respect to the housing by the lock member when the user manually inserts the recording medium into the holder, and in this fixed state, by the insertion force of the recording medium. The movable connector is connected to the fixed connector, and after the connector is connected, the fixed state of the holder by the lock member is released and the holder is automatically conveyed by the conveyance mechanism. Not only can the side connector be securely connected, but it is also possible to use a low torque motor as a drive source for the transport mechanism. In addition, the transport mechanism includes a first rotating arm that rotates using a motor as a drive source, and a second rotating arm that rotates in conjunction with the first rotating arm and drives the holder. The first and second rotating arms are connected to be coaxially rotatable, and are elastically biased in a direction in which the first and second rotating arms are engaged with each other so that the first and second rotating arms rotate integrally. Therefore, for example, when the user further inserts the recording medium into the holder after connecting the connector, the movement of the holder is absorbed by the rotation of the second rotating arm with respect to the first rotating arm, and the motor side An unreasonable force can be prevented from acting on the first rotating arm connected to the.

The present invention includes a holder capable of holding a recording medium inserted in a housing, a fixed connector disposed at the back of the holder, and a transport mechanism using a motor as a drive source. The holder is automatically transported between a front position and a back position of the housing, and a movable connector provided on the leading end side in the insertion direction of the recording medium is connected to the fixed connector provided on the holder. A recording medium driving apparatus to be connected, wherein the transport mechanism rotates a first rotating arm that rotates using the motor as a driving source and a first rotating arm that rotates in conjunction with the first rotating arm to drive the holder. Two pivot arms, and the first and second pivot arms are connected to be coaxially rotatable, and the first and second pivot arms are integrally rotated. Engage each other And elastically urged direction, and a locking member for the stationary state said holder relative to the housing during the connection with the fixed connector and the movable connector is provided, wherein the movable connector and the fixed connector After completion of the connection, the lock member is returned to the unlock position to release the fixed state of the holder.

In the recording medium driving device configured as described above, when the user manually inserts the recording medium into the holder, the holder is fixed to the housing by the lock member, and the recording medium is fixed in this fixed state. The movable side connector is connected to the fixed side connector by the insertion force, and after the connector is connected, the fixed state of the holder by the lock member is released and the holder is automatically conveyed by the conveyance mechanism. Not only can the connector and the fixed connector be securely connected, but also a low torque motor can be used as the drive source of the transport mechanism. In addition, the transport mechanism includes a first rotating arm that rotates using a motor as a drive source, and a second rotating arm that rotates in conjunction with the first rotating arm and drives the holder. The first and second rotating arms are connected to be coaxially rotatable, and are elastically biased in a direction in which the first and second rotating arms are engaged with each other so that the first and second rotating arms rotate integrally. Therefore, for example, when the user further inserts the recording medium into the holder after connecting the connector, the movement of the holder is absorbed by the rotation of the second rotating arm with respect to the first rotating arm, and the motor side An unreasonable force can be prevented from acting on the first rotating arm connected to the.

  In the above-described configuration, the lock member is provided in the holder, and the lock member is in a lock position in which the holder is fixed to the housing by an insertion force of the recording medium into the holder. It is preferable to move, and if it comprises in this way, the special drive source for moving a lock member to a lock position and a lock release position will become unnecessary.

  In each of the above configurations, the recording medium has a concave portion on its side surface, and a receiving portion that can be engaged with and disengaged from the concave portion protrudes from the lock member. If such a configuration is adopted, the structure can be simplified by providing a common lock member with a holder lock switching function and a recording medium drop-off preventing function.

  In this case, the lock member is provided with an operating portion that protrudes in a direction opposite to the receiving portion, and when the recording medium is inserted, the operating portion enters the locking portion provided in the housing, thereby It is preferable that the movement to the lock position is allowed, and the movement of the lock member to the lock position is prohibited when the operating portion faces the inner side surface of the housing during automatic conveyance of the holder. If is adopted, it is possible to reliably prevent the recording medium from being accidentally dropped during the automatic conveyance of the holder.

  In the above configuration, the lock member may be supported by the holder in any way, but the lock member is rotatably supported by the holder, and the lock member is elastically moved toward the unlock position by the spring member. When biased, it is preferable that the lock member can be stably driven with the insertion operation of the recording medium.

  Embodiments will be described with reference to the drawings. FIG. 1 is a plan view showing a standby state of a recording medium driving apparatus according to a first embodiment of the present invention, and FIG. 2 shows an initial medium insertion state of the recording medium driving apparatus. FIG. 3 is a plan view showing a medium holding state of the recording medium driving device, FIG. 4 is a plan view showing a medium conveying state of the recording medium driving device, and FIG. FIG. 6 is an operation explanatory view of a lock member provided in the recording medium driving device, FIG. 7A is a plan view of the recording medium used in the recording medium driving device, and FIG. FIG. 3 is a side view of the recording medium.

  As shown in FIGS. 1 to 5, the recording medium driving device according to the present embodiment includes a box-shaped housing 1 installed at a predetermined position (for example, in a console) in a vehicle compartment, and a front opening of the housing 1. And a front panel 2 attached to the end, and a recording medium 3 can be inserted into / extracted from the housing 1 through an insertion port 2a opened in the front panel 2. As shown in FIG. 7, the recording medium 3 is a recording medium in which a hard disk (not shown) as a recording medium is housed in a synthetic resin cartridge 4, and a movable side connector 5 is provided on the insertion side end surface of the cartridge 4. ing. Further, a guide groove 4a extending in the insertion / discharge direction and a concave portion 4b for clamping are formed on the left and right side surfaces of the cartridge 4.

  A holder 6 having an open front is disposed inside the housing 1, and the recording medium 3 inserted into the housing 1 from the insertion port 2 a is held by the holder 6. A fixed-side connector 7 is disposed at the innermost part in the holder 6. When the leading end of the recording medium 3 is inserted to the innermost part of the holder 6, the movable-side connector 5 of the recording medium 3 is fixed. The connector 7 is connected. Although the detailed structure is not shown, the movable connector 5 includes a plurality of clip-shaped female terminals arranged at a predetermined pitch, and the fixed-side connector 7 includes a plurality of pin-shaped male terminals as female terminals. It consists of the ones arranged at the same pitch. Three pins 6 a are implanted on the upper surface of the holder 6, and these pins 6 a are guided in linear guide holes 1 a formed on the upper surface of the housing 1, so that the holder 6 is shown in FIG. 3. Can be moved in the front-rear direction (X1-X2 direction) of the housing 1 between the media insertion position shown in FIG. Guide protrusions 6 b are formed on the inner sides of the left and right side walls 6 c of the holder 6, and the guide grooves 6 a of the cartridge 4 described above are guided by these guide protrusions 6 b, so that the recording medium 3 is positioned relative to the holder 6. Can be inserted and removed smoothly. Further, on the outside of the left and right side walls 6c of the holder 6, a lock member 8 is rotatably supported on the top surface or the bottom surface of the holder 6, and these lock members 8 are wound around the rotation shaft. It is biased toward the inside of the holder 6 by the elastic force of the torsion coil spring 9. A receiving portion 8 a, which will be described later, of the lock member 8 can enter the holder 6 through a through hole 6 d formed in the left and right side walls 6 c of the holder 6. The lock member 8 is rotated by the recording medium 3 inserted into the holder 6, and detailed description of the operation is omitted here, but the lock member 8 is inserted into the recording medium 3 inserted into the holder 6. And a lock switching function for temporarily fixing the holder 6 to the housing 1.

  As shown in FIG. 6, a receiving portion 8a and an operating portion 8b are integrally formed on the distal end side of the lock member 8, and the receiving portion 8a and the operating portion 8b protrude in opposite directions. The receiving portion 8a protrudes inward of the holder 6 and is positioned in front of the guide protrusion 6b (X1 side), but on the contrary, the operating portion 8b protrudes outward of the holder 6 and the housing 1 On both the left and right side surfaces, there are formed locking holes 1b facing the operating portion 8b. On the X1 side of the receiving portion 8a, an inclined side 8c that is inclined in a direction away from the holder 6 toward the near side is formed. Then, when the recording medium 3 is inserted, the side surface of the cartridge 4 presses the receiving portion 8a, so that the lock member 8 rotates outwardly of the holder 6 against the elastic force of the torsion coil spring 9, and accordingly. As the operating portion 8b enters the locking hole 1b, the holder 6 is in a fixed state in which movement in the front-rear direction is restricted with respect to the housing 1.

  A low-torque motor 10 is installed on the left side of the housing 1 in the figure, and a worm gear 10 a attached to the rotating shaft of the motor 10 is engaged with the first gear of the reduction gear train 11. The final gear of the reduction gear train 11 meshes with a rack 13 provided on the left side of the driving member 12 in the figure, and a rotating arm 14 is interposed between the driving member 12 and the holder 6. The rotation of the motor 10 is converted into a linear motion of the rack 13 via the worm gear 10a and the reduction gear train 11, so that the drive member 12 reciprocates in the front-rear direction (X1-X2 direction) of the housing 1, As will be described later, as the drive member 12 moves forward and backward, the rotating arm 14 rotates to convey the holder 6 in the X1-X2 direction. That is, the motor 10, the reduction gear train 11, the driving member 12, and the rotating arm 14 automatically convey the holder 6 between the media insertion position on the front side of the housing 1 and the media mounting position on the back side. Is configured.

  The rotating arm 14 is rotatably supported on the upper surface of the housing 1 around the rotating shaft 15, and the rotating shaft 15 is inserted into an escape hole 12 a formed in the drive member 12. The rotating arm 14 includes a first rotating arm 16 and a second rotating arm 17 which are coaxially connected via a rotating shaft 15. The first rotating arm 16 includes a second rotating arm 16. A pair of restricting walls 16a and 16b for restricting the turning of the turning arm 17 are bent. A tension spring 18 is stretched around the ends of the first and second rotating arms 16, 17. The tension spring 18 causes the second rotating arm 17 to be in front of the first rotating arm 16. It is urged in a direction in pressure contact with the side regulating wall 16a. Further, the drive pin 16 a implanted in the first rotation arm 16 is engaged with the drive member 12, and the long hole 17 a formed at the tip of the second rotation arm 17 is attached to the holder 6. The implanted center pin 6a is inserted. Thereby, when the movement of the driving member 12 in the front-rear direction is transmitted to the first rotating arm 16 via the driving pin 16 a, the first and second rotating arms 16 and 17 are centered on the rotating shaft 15. Accordingly, the holder 6 connected to the second rotating arm 17 is conveyed in the front-rear direction (X1-X2 direction) of the housing 1. However, when an external force in the direction of the arrow X2 is applied from the holder 6 to the second rotating arm 17 while the first rotating arm 16 is stopped, the second rotation is performed against the tension of the tension spring 18. Since only the moving arm 17 rotates from the restriction wall 16a on the near side of the first rotation arm 16 toward the restriction wall 16b on the back side, the external force damages the first and second rotation arms 16 and 17. It is supposed not to.

  Further, first and second detection switches 19 and 20 are installed inside the housing 1, and the motor 10 is started / stopped based on signals from the first and second detection switches 19 and 20. It is supposed to be. The first detection switch 19 is turned on / off by the second rotating arm 17, and the second detection switch 20 is turned on / off by the front end portion of the rack 13 provided on the drive member 12.

  Next, the operation of the recording medium driving device configured as described above will be described.

  FIG. 1 shows a standby state at the time of ejection when the recording medium 3 is not inserted into the housing 1, and in this case, the holder 6 is at the most advanced position of the housing 1. The drive member 12 is positioned closer to the rear of the housing 1, and the second rotation arm 17 of the rotation arm 14 is in pressure contact with the restriction wall 16 a on the near side of the first rotation arm 16. . Further, as shown in FIG. 6A, the lock member 8 is in an unlock position where the receiving portion 8a protrudes into the media insertion path of the holder 6, and the operating portion 8b of the housing 1 is located at the unlock position. Since the holder 6 is spaced from the inner surface and faces the locking hole 1 b, the holder 6 is released from the fixed state with respect to the housing 1.

  In this standby state, as shown in FIG. 2, when the user starts to insert the recording medium 3 into the holder 6 in the housing 1 from the insertion port 2a by manual operation, first, the cartridge 4 in the insertion direction of the recording medium 3 is firstly inserted. Since both corners on the front end side are in contact with the inclined side 8c of the lock member 8 and press the inclined side 8c, both the lock members 8 resist the elastic force of the torsion coil spring 9 from the unlocked position. Start to rotate outward. When the recording medium 3 is inserted to a position where the side surface of the cartridge 4 exceeds the receiving portions 8a of the both lock members 8, the lock member 8 is greatly rotated to the lock position and actuated as shown in FIG. Since the portion 8b is fitted into the locking hole 1b, the holder 6 is locked in the housing 1 via both lock members 8. However, at this time, the movable connector 5 of the recording medium 3 is in a position before the fixed connector 7 in the holder 6, and the movable connector 5 and the fixed connector 7 are not connected.

  When the user further inserts the recording medium 3 into the holder 6, the fixed connector 7 is inserted into the movable connector 5 in response to the insertion force of the recording medium 3, so that the movable connector 5 and the fixed connector 7 are connected to each other. Connected. As described above, since the holder 6 is fixed to the housing 1 at this time, the movable connector 5 and the fixed connector 7 can be reliably connected by a large insertion force from the user. . When the user inserts the recording medium 3 to the innermost position of the holder 6, the receiving portion 8 a of the locking member 8 enters the concave portion 4 b of the cartridge 4 as shown in FIG. Since the elastic force of the torsion coil spring 9 rotates from the locked position toward the unlocked position, the fixed state of the holder 6 with respect to the housing 1 is released again. That is, when the movable connector 5 and the fixed connector 7 are completely connected, the locked state of the holder 6 by the lock member 8 is released, and instead the receiving portion 8a of the lock member 8 enters the recess 4b. As shown in the medium insertion position, the recording medium 3 is held by the holder 6 by both lock members 8. When the user further pushes the recording medium 3 into the housing 1 from this state, the holder 6 moves slightly in the X2 direction and presses the second rotating arm 17 in the counterclockwise direction in the drawing, The moving arm 17 rotates by a slight angle with respect to the first rotating arm 16, and accordingly, the first detection switch 19 is turned on to start the motor 10.

  When the motor 10 starts to rotate in one direction in this way, the rotation of the motor 10 is converted into a linear motion of the rack 13 via the worm gear 10a and the reduction gear train 11, so that as shown in FIG. The drive member 12 located near the rear of 1 moves to the near side (X1 direction), and accordingly, the rotation arm 14 rotates about the rotation shaft 15 in the counterclockwise direction in the figure. That is, when the drive member 12 starts to move in the X1 direction from the media insertion position in FIG. 3, the drive pin 16a of the first rotary arm 16 is pressed in the X1 direction, and thus the first and second rotary arms 16 , 17 integrally rotate counterclockwise about the rotation shaft 15, and the holder 6 connected to the second rotation arm 17 is conveyed in the X2 direction. Then, as shown in FIG. 5, when the holder 6 is transported to the innermost media mounting position of the housing 1, the second detection switch 20 is turned on by the front end portion of the rack 13 and the motor 10 is stopped. The recording medium 3 held by the holder 6 is completely stored in the housing 1. At this time, the driving force required for the holder 6 may be a small force that can simply transport the recording medium 3, and therefore a low torque motor 10 can be used as a driving source for the transport mechanism. The conveyance speed can also be increased.

  Further, when ejecting the recording medium 3 mounted in the apparatus, when an eject button (not shown) is operated, the motor 10 starts to rotate in the reverse direction and the reverse operation is performed, and the holder 6 is Since the user moves in the X1 direction from the media mounting position 5 to the media insertion position in FIG. In this case, after the holder 6 is transported to the medium insertion position in FIG. 3, the user pulls the recording medium 3 out of the holder 6 by manual operation, so that the lock member 8 performs the reverse operation to that when the recording medium 3 is inserted. Will do. That is, when the movable connector 5 is pulled out of the fixed connector 7 by the pulling force of the recording medium 3, the lock member 8 rotates as shown in FIGS. The lock member 8 is maintained in the unlocked position shown in FIG. 6A after the fixed state is maintained until the both corners of the front end side of the cartridge 4 are separated from the receiving portion 8a of the lock member 8. Return.

  While the holder 6 is transported between the media insertion position shown in FIG. 3 and the media loading position shown in FIG. 5, the operating portion 8b of the lock member 8 moves away from the locking hole 1b and slidably contacts the inner surface of the housing 1 or slightly. Therefore, the free rotation of the lock member 8 is prevented by the opposition of the operating portion 8b and the inner surface of the housing 1. Therefore, for example, even when the user tries to forcibly pull out the recording medium 3 while the holder 6 is being transported, and a force is applied to the lock member 8 to rotate outward of the holder 6, the receiving portion of the lock member 8 can be operated. 8a is not detached from the recess 4b of the cartridge 4, and the recording medium 3 can be reliably prevented from falling off the holder 6.

  FIG. 8 is a main part plan view showing a medium holding state of the recording medium driving apparatus according to the second embodiment of the present invention, and FIG. 9 is a main part plan view showing a medium conveyance completion state of the recording medium driving apparatus. Parts corresponding to those in FIGS. 1 to 7 are denoted by the same reference numerals.

  The recording medium driving apparatus according to the present embodiment is different from the first embodiment described above in that the driving force of the motor 10 is applied to the rotating arm 14 (first and second rotating arms 16,. 17), and other configurations are basically the same. The cam plate 21 is rotatably supported by the housing 1, and a gear portion 21 a engraved on the outer peripheral surface of the cam plate 21 meshes with the final gear of the reduction gear train 11, thereby causing a motor (not shown). It can be rotated in both forward and reverse directions as a drive source. The cam plate 21 is provided with a cam groove 22 having different distances from the rotation shaft 21b, and a drive pin 16a implanted in the first rotating arm 16 is engaged with the cam groove 22. Yes. The cam groove 22 is continuous within a predetermined angle range along the rotation direction of the cam plate 21, but one end 22a of the cam groove 22 is in the vicinity of the rotation shaft 21b, and the other end 22b of the cam groove 22 is from the rotation shaft 21b. At the farthest distance.

  In the recording medium driving device configured as described above, as shown in FIG. 8, at the medium insertion position where the recording medium is inserted and held in the holder 6, the movable side of the recording medium 3 is the same as in the first embodiment. The connector 5 and the fixed connector 7 in the holder 6 are in a connected state, and the drive pin 16 a of the first rotating arm 16 is engaged with one end 22 a of the cam groove 22 provided in the cam plate 21. Yes. When the cam plate 21 rotates counterclockwise in the figure using the motor as a drive source from this state, the drive pin 16a on the first rotating arm 16 side traces the cam groove 22 from one end 22a to the other end 22b. 9, the rotary arm 14 (first and second rotary arms 16, 17) rotates about the rotary shaft 15 counterclockwise to convey the holder 6 to the media mounting position. To do.

  In the above embodiment, the cartridge 4 containing a hard disk, which is a magnetic disk, is illustrated as the recording medium 3. However, it may be a card type or cartridge type recording medium containing a semiconductor memory or an optical disk.

  Further, the lock member 8 is not limited to the one that moves between the lock position and the unlock position by the insertion force of the recording medium 3, but the recording medium 3 is inserted to the position shown in FIG. It is also possible to electrically detect that the connector 7 is connected, and to move the lock member 8 from the lock position to the unlock position based on the detection result.

FIG. 3 is a plan view showing a standby state of the recording medium driving apparatus according to the first embodiment of the invention. It is a top view which shows the media insertion initial state of this recording media drive device. It is a top view which shows the media holding state of this recording media drive device. It is a top view which shows the medium conveyance middle state of this recording media drive device. It is a top view which shows the media conveyance completion state of this recording media drive device. Operation explanatory diagram of the lock member provided in the recording medium driving device It is explanatory drawing of the recording medium used for this recording medium drive device. It is a principal part top view which shows the media holding | maintenance state of the recording media drive device concerning 2nd Example of this invention. It is a principal part top view which shows the media conveyance completion state of this recording media drive device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing | casing 1b Locking hole 2 Front panel 2a Insertion slot 3 Recording medium 4 Cartridge 4a Guide groove 4b Recessed part 5 Movable connector 6 Holder 6a Pin 6b Guide protrusion 7 Fixed side connector 8 Lock member 8a Receiving part 8b Actuation part 9 Torsion coil Spring 10 Motor 11 Reduction gear train 12 Drive member 13 Rack 14 Rotating arm 15 Rotating shaft 16 First rotating arm 16a Driving pin 17 Second rotating arm 17a Long hole 18 Tension spring 21 Cam plate 21a Gear portion 22 Cam groove

Claims (5)

A holder capable of holding a recording medium inserted in the housing; a fixed connector disposed in the back of the holder; and a transport mechanism using a motor as a drive source. Recording that is automatically conveyed between a front position and a back position of the housing, and a movable connector provided on the leading end side in the insertion direction of the recording medium is connected to the fixed connector provided on the holder. A media drive device,
The transport mechanism includes a first rotating arm that rotates using the motor as a drive source, and a second rotating arm that rotates in conjunction with the first rotating arm and drives the holder. The first and second rotating arms are connected to be coaxially rotatable, and elastically biased in a direction in which the first and second rotating arms are engaged with each other so that the first and second rotating arms rotate integrally, And providing a lock member that fixes the holder to the housing during the connection between the movable connector and the fixed connector, and after the connection between the movable connector and the fixed connector is completed, A recording medium driving apparatus, wherein the lock member is returned to the unlock position to release the fixed state of the holder.   2. The lock according to claim 1, wherein the lock member is provided in the holder, and the lock member fixes the holder with respect to the housing by an insertion force of the recording medium into the holder. A recording medium driving device characterized by moving to a position.   3. The recording medium according to claim 1, wherein the recording medium has a concave portion on a side surface thereof, and a receiving portion that is detachable from the concave portion protrudes from the lock member. A recording medium driving device, wherein the recording medium is prevented from falling off from the holder.   4. The operation part according to claim 3, wherein an operating part that protrudes in a direction opposite to the receiving part is provided on the lock member, and the operating part enters a locking part provided in the housing when the recording medium is inserted. As a result, movement of the lock member to the lock position is allowed, and movement of the lock member to the lock position occurs when the operating portion faces the inner side surface of the housing during automatic conveyance of the holder. A recording medium driving device characterized in that the recording medium is prohibited.   The lock member according to any one of claims 2 to 4, wherein the lock member is rotatably supported by the holder, and the lock member is elastically biased toward the unlock position by a spring member. A recording medium driving device.

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