JP2009076114A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk device capable of quickly blocking delivery of disks into a casing by stopping rotation itself of a roller shaft when a plurality of disks are inserted into the casing in a stacked state. <P>SOLUTION: When two stacked disks are inserted, a space between a convey roller 112 and a holding member 106 is expanded, a rotation regulation gear 150 is pressed together with a roller shaft 111, and the rotation regulation gear 150 is engaged with the regulation projected part 157 of a regulation lever 155 to stop rotation of the roller shaft 111. Thus, insertion of the two stacked disks into the casing is blocked. When the rotation regulation gear 150 is rotated in a α2 direction, the rotation regulation gear 150 is not engaged with the regulation lever 155. Thus, the two stacked disks are delivered out. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a disk device in which a disk is inserted from an insertion port of a housing, is sandwiched between a transport roller and a sandwiching member, and is carried into the housing by the rotational force of the transport roller.

  In a so-called slot-in type disk device that inserts disks one by one from an insertion opening that opens in a slit shape in a housing, a conveyance roller and a clamping member are provided inside the insertion opening inside the housing. The disc inserted from the insertion port is sandwiched between the transport roller and the sandwiching member, and is transported into the housing by the rotational force of the transport roller.

  In a normal disk device, only one disk inserted from the insertion slot is mounted on a turntable provided inside the housing. Also, in a disk device that can store a plurality of disks inside the housing, the disks inserted from the insertion slot are supplied and held one by one to the disk storage unit.

  In this type of disc device, in order to prevent the discs from being inserted one by one from the insertion slot, and the two discs being mistakenly stacked, the disc between the conveying roller and the clamping member is usually separated by two discs. It is regulated so that it does not spread to the size that can be clamped. However, since the roller shaft supporting the transport roller is elongated, if two disks are overlapped and forcibly inserted between the transport roller and the sandwiching member, the roller shaft bends and the two disks become transport rollers. And the sandwiching member. At this time, since the rotational force is applied to the roller shaft from the transport motor, the double-layered disk may be forcibly pulled into the housing and the mechanism may break down.

Therefore, the following Patent Document 1 discloses a disk device that can identify the thickness of a disk inserted from an insertion slot. In this disk device, a lever member that is rotated by the disk when the disk is inserted into the housing and a detection switch that is operated by the lever member are provided. When a plurality of discs are inserted into the apparatus in a state where they are stacked in the thickness direction, the lever member is rotated at an angle greater than normal, and the detection switch is operated. At this time, the control unit recognizes that a plurality of discs are stacked and inserted. Then, the transport roller is stopped and reversely rotated so that a plurality of disks are carried out of the casing.
JP 2006-196128 A

  In the disk apparatus of Patent Document 1, when a plurality of disks are inserted into the apparatus, the detection switch operates to stop the conveyance roller, and further, the conveyance roller reverses in the carry-out direction. However, if a plurality of stacked disks are forcibly pushed into the housing before or immediately after the operation of the detection switch, the transport roller rotates due to friction with the disks. As a result, the disk may be pushed deep into the casing until the power of the motor is turned off or immediately after the power is turned off. After that, even if the motor reverses and the transport roller tries to carry out the disk, a plurality of disks that have already been pushed into the back may be caught in the mechanism in the housing, resulting in a failure state in which the disk cannot be carried out. There is.

  That is, the disk device described in Patent Document 1 can detect that a plurality of disks are inserted in a stacked manner, but the disk is pushed in forcibly as described above because the transport roller is in a free state at that time. It is not possible to completely stop abnormal operations such as

  The present invention solves the above-described conventional problems, and when a plurality of disks are inserted into the casing in a stacked state, the rotation of the roller shaft itself is stopped, so that the disk can be moved into the casing. An object of the present invention is to provide a disk device that can quickly prevent the loading of the disk.

The present invention includes a conveyance roller and a clamping member that are provided inside an insertion port of a housing and sandwich a disk inserted into the insertion port, and the conveyance roller can move in a direction away from the clamping member. In the disk device provided with a pressing member for pressing the conveying roller toward the clamping member,
When the distance between the conveying roller and the clamping member is larger than the dimension for conveying a single disk, the rotation of the roller shaft supporting the conveying roller in at least the disk loading direction is restricted. A rotation restricting member is provided.

  For example, according to the present invention, when the distance between the transport roller and the clamping member is smaller than a dimension capable of transporting two disks in a stacked manner and larger than a dimension when transporting one disk, The rotation restricting member restricts at least the rotation of the roller shaft in the disk loading direction.

  In the disk device of the present invention, the roller shaft is restricted so that it cannot rotate when the distance between the conveying roller and the clamping member is increased to a dimension larger than the thickness dimension of a normal single disk. Therefore, even if an abnormally thick disk or a double-layered disk is forcibly inserted from the insertion slot, the resistance increases, and the disk can be prevented from being erroneously inserted deep inside the housing.

  The clamping member is a shoe or pad formed of a resin material having a small coefficient of friction so that the disk can slide. Alternatively, the clamping member may have a roller shaft and a transport roller and can freely rotate.

  In the present invention, the roller shaft is provided with a gear, and when the transport roller and the roller shaft move to a position away from the clamping member, the rotation restricting member meshes with the gear, and the roller shaft Can be configured to be restricted from rotating.

  In the present invention, when the power of the transport motor is transmitted to the roller shaft and the transport roller is driven in the disk loading direction, the rotation of the roller shaft is forcibly restricted by the rotation restricting member. It is.

  However, it is preferable that the transport motor is stopped when it is determined that the disk cannot be loaded to a predetermined position within a predetermined time after the transport motor is started.

  As described above, in the present invention, when the roller shaft is driven in the disk loading direction by the transport motor, the roller shaft is forcibly stopped by the rotation restricting member when the roller shaft moves to a position away from the clamping member. . Therefore, the roller shaft does not rotate until the conveyance motor stops, and the disk can be effectively prevented from being forced into the housing.

  Further, in the present invention, it is preferable that the rotation of the roller shaft is not restricted by the rotation restricting member when the roller shaft is driven in the disk unloading direction by the power of the transport motor.

  For example, when the roller shaft is provided with a gear, and the roller shaft rotates in the disc loading direction, the rotation restriction occurs when the transport roller and the roller shaft move to a position away from the clamping member. When the member is engaged with the gear and the rotation of the roller shaft is restricted, and the roller shaft is rotating in the disc unloading direction, the rotation of the roller shaft is not engaged with the rotation restricting member and the gear. Is possible.

  In the present invention, for example, after a two-layer disc is inserted and the rotation of the roller shaft is restricted by the rotation restricting member, the roller shaft can be rotated in the disc carry-out direction when the transport motor is reversed. Therefore, it is possible to eject a disk such as a double stack out of the housing.

  In the disk device of the present invention, when an abnormally thick disk or a double-layered disk is inserted, the rotation of the roller shaft is restricted, so that the disk can be prevented from being forcibly pushed into the housing. Therefore, it is easy to prevent the disk from being pushed into the casing and causing a failure state.

  FIG. 1 is a plan view showing the overall structure of a disk device according to an embodiment of the present invention, FIG. 2 is a partial perspective view showing a transfer unit provided in the disk device, and FIG. 3 shows a state where a gear of the transfer unit is removed. FIG. 4 and FIG. 5 are side views of the transfer unit showing the operation.

  A disk device 1 shown in FIG. 1 has a rectangular parallelepiped housing 2. A slit-like insertion opening extending in the X1-X2 direction is opened on the front surface 3 of the housing 2. A transfer unit 17 for conveying the disk D is provided inside the insertion slot. The transfer unit 17 is driven by the transport motor M.

  A disk detection mechanism 11 is provided between the front surface 3 of the housing 2 and the transfer unit 17. The disk detection mechanism 11 is provided with four optical detectors 11a, 11b, 11c, and 11d. In these optical detectors, a light emitting element is directed to one side and a light receiving element is directed to the other side with a disc D inserted from an insertion opening interposed therebetween. When the disk D is not inserted, the light emitted from the light emitting element is detected by the light receiving element. When the light is blocked by the disk D inserted from the insertion port, the light receiving element is not in the state of detecting light. At this time, it is recognized that the optical detector has detected the disk D.

  It is detected by one of the optical detectors 11a, 11b, 11c, and 11d that the disc D has been inserted from the insertion slot. Moreover, it is detected whether the disc D inserted from the insertion opening has a normal diameter size by a combination of detection outputs of the optical detectors 11a, 11b, 11c, and 11d.

  Inside the housing 2, a rotation driving unit 30 is provided at a position substantially at the center line OO. The rotation drive unit 30 is provided with a rotation shaft 31 of a spindle motor and a turntable 32 fixed to the rotation shaft 31. In addition, a clamp mechanism that clamps the center hole Da of the disk D is provided in the turntable 32.

  A loading detection mechanism 35 that detects that the center hole Da of the disk D transferred by the transfer unit 17 is loaded to a position where it can be clamped to the turntable 32 is provided inside the housing 2. The loading detection mechanism 35 is operated by the disk D loaded to a position where it can be clamped to the turntable 32.

  A head unit 40 is provided in the housing 2. The head unit 40 is provided with a pair of guide portions 41, 41, and an optical head 42 is movably provided by being guided by the guide portions 41, 41. The optical head 42 is provided with an objective lens 43, and when the optical head 42 moves, the objective lens 43 moves along the radial direction of the disk D held on the turntable 32. The head unit 40 is provided with a sled mechanism for moving the optical head 42.

  The detection outputs of the optical detectors 11a, 11b, 11c, and 11d are detected by the detection unit 12. The output of the detection unit 12 is given to the control unit 20. A detection output from the loading detection mechanism 35 is also given to the control unit 20. The transport motor M is controlled by the control unit 20.

  The disk D has a diameter of 12 cm and is, for example, a CD (compact disk), a CD-ROM, a DVD (digital versatile disk), or the like.

  In the disk device 1, the disks D inserted one by one from the insertion opening opened in the front surface 3 of the housing 2 are loaded by the transfer unit 17 and loaded into the rotation drive unit 30, and recorded on the disk D by the head unit 40. The recorded information is reproduced and information is recorded on the disk D. However, in the disk device of the present invention, the disks D loaded one by one by the transfer unit 17 are held by the rotation drive unit 30 and then delivered to the disk storage unit provided in the housing 2. A plurality of discs may be held, and then a disc selection type in which a disc in the disc storage unit is selected and loaded into the rotation drive unit 30 may be used.

  As shown in FIGS. 2 and 3, the transfer unit 17 has a metal unit frame 100 that is elongated in the X1-X2 direction. The unit frame 100 has an upper surface 101, a lower surface 102, a side surface 103 on the X2 side, and a side surface 104 on the X1 side, and the inside of the unit frame 100 penetrates in the Y1-Y2 direction.

  Inside the unit frame 100, a clamping member 106 made of a synthetic resin having a low friction coefficient is provided. The clamping member 106 is fixed to the inner surface of the upper surface 101 of the unit frame 100.

  As shown in FIG. 1, a roller shaft 111 is provided in the unit frame 100. The roller shaft 111 extends parallel to the upper surface 101 of the unit frame 100, and both ends thereof are rotatably supported by the side surface 103 on the X2 side and the side surface 104 on the X1 side. As shown in FIG. 3, a moving groove 103a is formed on the side surface 103 of the unit frame 100 along an arc locus centering on the shaft 145, and the end of the roller shaft 111 on the X2 side passes through the moving groove 103a. It is slidably supported in the vertical direction. A moving groove having the same shape as the moving groove 103a is also formed on the side surface 104 on the X1 side of the unit frame 100, and an end portion on the X1 side of the roller shaft 111 is slidably supported by the moving groove.

  As shown in FIG. 1, a first transport roller 112 and a second transport roller 113 formed of a material having a high friction coefficient such as synthetic rubber and natural rubber are provided on the outer periphery of the roller shaft 111. The first transport roller 112 and the second transport roller 113 are arranged with an interval in the axial direction. As shown in FIG. 1, the first transport roller 112 and the second transport roller 113 are substantially parallel to the front surface 3 of the housing 2 and are spaced equidistant from the center line OO of the housing 2 to the left and right. Is arranged.

  The first conveyance roller 112 and the second conveyance roller 113 have a tapered shape in which the diameter dimension near the center line OO is small and the diameter gradually increases toward the X1 direction and the X2 direction. The roller shaft 111 is urged upward in the figure by an elastic member such as a coil spring (not shown). When the disk D is not present in the transfer unit 17, the first conveyance is performed by the urging force of the elastic member. The roller 112 and the second moving roller 113 are elastically pressed by the synthetic resin sandwiching member 106.

  When the disc D inserted from the insertion port is inserted into the transfer unit 17, the disc D is sandwiched between the transport rollers 112 and 113 and the sandwiching member 106 by the elastic pressure of the elastic member.

  Both the first transport roller 112 and the second transport roller 113 are rotatably mounted around the roller shaft 111. The frictional force between the first conveyance roller 112 and the roller shaft 111 and the frictional force between the second conveyance roller 113 and the roller shaft 111 are large. For example, when the roller shaft 111 is driven by the conveyance motor M In addition, the roller shaft 111 can slip when an excessive load is applied to the first transport roller 112 and the second transport roller 113.

  As shown in FIGS. 2 and 3, one end of the roller shaft 111 protrudes outward from the side surface 103 of the unit frame 100 on the X2 side, and the end of the roller shaft 111 protruding from the side surface 103 is used for power transmission. A roller gear 144 that is a spur gear is fixed. A shaft 145 is fixed to the side surface 103, and an integral gear 146 is rotatably supported on the shaft 145. The integral gear 146 is formed by integrating a small-diameter spur gear 146 a and a large-diameter spur gear 146 b, and the small-diameter spur gear 146 a meshes with the roller gear 144. The power from the conveying motor M acts on the large-diameter spur gear 146b of the integral gear 146, and the rotational force is transmitted from the small-diameter spur gear 146a to the roller gear 144, so that the roller shaft 111 is rotationally driven.

  As shown in FIG. 3, since the moving groove 103a on which the roller shaft 111 slides is formed along an arc locus centering on the shaft 145, when the roller shaft 111 moves in the moving groove 103a, The meshing between the small-diameter spur gear 146a and the roller gear 144 continues.

  As shown in FIGS. 2 and 3, a rotation restricting gear 150 is fixed to the outer side of the roller gear 144 at the end of the roller shaft 111 on the X2 side. The rotation restricting gear 150 is fixed to the roller shaft 111, and the rotation restricting gear 150, the roller gear 144, and the roller shaft 111 rotate together.

  A support portion 153 is provided below the side surface 103 on the X2 side of the unit frame 100, and a shaft 154 protruding in the X1 direction is provided on the support portion 153. A restriction lever 155 that functions as a restriction member is supported on the shaft 154 so as to be rotatable in the β1-β2 direction.

  The restriction lever 155 includes an arm part 156 that is rotatably supported by the shaft 154 and a restriction convex part 157 that is bent substantially at a right angle at the tip of the arm part 156. The restricting convex portion 157 has a tapered shape and can enter the valley portion 152 in the middle of the adjacent tooth portions 151 of the rotation restricting gear 150.

  The regulating lever 155 is always urged in the β1 direction by an urging spring (not shown). The support portion 153 is provided with a stopper 158 protruding in the X2 direction, and when the arm portion 156 hits the stopper 158, the rotation of the restriction lever 155 in the β1 direction is restricted.

  As shown in FIG. 4, the tooth portion 151 provided on the outer periphery of the rotation restricting gear 150 has an asymmetric shape in the rotation direction. A side surface of the tooth portion 151 facing the α1 direction is a restricting surface 151a, and the restricting surface 151a is a flat surface extending in the radial direction of the rotation restricting gear 150. The side surface of the tooth portion 151 facing the α2 direction is a release surface 151b, and the release surface 151b has a shape that inclines in the α1 direction with respect to the radial direction of the rotation restricting gear 150 toward the tooth tip.

  The regulation convex part 157 of the regulation lever 155 has a planar regulation side surface 157 a that can be fitted to the regulation surface 151 a of the tooth part 151 of the rotation regulation gear 150. As shown in FIG. 4, when the restriction lever 155 is in contact with the stopper 158, the restriction side surface 157 a is substantially parallel to the restriction surface 151 a of the rotation restriction gear 150. The other side surface of the restriction convex portion 157 is a release side surface 157b, and the release side surface 157b is an inclined surface that is inclined in the same direction as the release surface 151b.

Next, the operation of the disk device 1 will be described.
When the disk D is not inserted into the transfer unit 17, the roller shaft 111 is urged upward by the elastic member as shown by the solid line in FIG. 3, and the large diameter of the first transfer roller 112 on the X2 side is And the large diameter end portion on the X1 side of the second transfer roller 113 are pressed by the clamping member 106.

  Further, the regulating lever 155 is biased in the β1 direction by the biasing spring, and the arm portion 156 is in contact with the stopper 158. At this time, the tip of the tooth portion 151 of the rotation restricting gear 150 is separated from the tip of the restricting convex portion 157 of the restricting lever 155, and the roller shaft 111 is not restricted by the restricting lever 155. Can rotate freely.

  When the disk D is inserted from the insertion slot and the disk D is detected by any of the optical detectors 11a, 11b, 11c, and 11d shown in FIG. 1, the transport motor M is started. The rotational power is applied to the large-diameter spur gear 146b of the integral gear 146 shown in FIG. 2, and further transmitted from the small-diameter spur gear 146a to the roller gear 144, so that the roller shaft 111 rotates in the α1 direction, which is the disk loading direction. Driven. In addition, when the insertion of the disk D is detected and the transport motor M is started, the timer measures time.

  The disc D inserted from the insertion port is sandwiched between the transport rollers 112 and 113 and the clamping member 106 in the unit frame 100 of the transfer unit 17. Then, the rotational force of the roller shaft 111 is transmitted from the transport rollers 112 and 113 to the disk D, and the disk D is carried into the housing 2. As the disk D is carried in, the width dimension of the disk D sandwiched between the transport rollers 112 and 113 and the sandwiching member 106 gradually increases, and the transport rollers 112 and 113 and the sandwiching member 106 are increased accordingly. The interval H1 gradually increases. When the center of the disk D reaches between the transport rollers 112 and 113 and the sandwiching member 106, the width dimension of the disk D sandwiched between the transport rollers 112 and 113 and the sandwiching member 106 is maximized, and the interval H1 is also maximized.

  When the disk D located in the transfer unit 17 has a normal thickness (thickness within the standard) and only one disk, the interval H1 is maximized, and the roller shaft 111 moves in the Z1 direction. Even if it is lowered, the rotation restricting gear 150 and the restricting convex portion 157 are separated from each other, and the rotation restricting gear 150 is not restricted by the restricting convex portion 157, and the roller shaft 111 continues to rotate in the α1 direction. Then, the disk D is carried into the housing 2.

  Next, when the two discs D having a normal thickness are inserted in an overlapping manner from the insertion port and the two discs D are sandwiched between the conveying rollers 112 and 113 and the clamping member 106, the rotational force of the roller shaft 111 is also detected. Thus, a conveying force toward the inside of the housing 2 acts on the two disks D.

  As the two disks D are carried into the housing 2, the distance H1 between the transport rollers 112 and 113 and the clamping member 106 is gradually increased. Then, when the interval H1 becomes larger than the maximum value of the interval H1 when one normal disk D is loaded, the valley of the rotation restricting gear 150 lowered with the roller shaft 111 as shown in FIG. The restriction convex part 157 of the restriction lever 155 enters the part 152. At this time, since the moment in the β1 direction is applied to the regulating lever 155 from the tooth portion 151 of the rotation regulating gear 150 to which power in the α1 direction is applied, the regulating lever 155 is pressed against the stopper 158, The roller shaft 111 is forcibly stopped together with the rotation restricting gear 150.

  Further, as shown in FIG. 4, the restriction surface 151 a of the tooth portion 151 of the rotation restriction gear 150 abuts on the restriction side surface 157 a of the restriction convex portion 157, so that the tooth portion 151 and the restriction convex portion 157 slip. The rotation restricting gear 150 is completely stopped by the restricting convex portion 157.

  The relationship between the timing at which the tooth portion 151 of the rotation restricting gear 150 and the restricting convex portion 157 are engaged and the distance H1 between the conveying rollers 112 and 113 and the clamping member 106 is determined as follows. That is, the center of two discs D that are completely overlapped so that the centers coincide with each other moves between the transport rollers 112 and 113 and the clamping member 106, and the interval H1 is two discs. The tooth portion 151 of the rotation restricting gear 150 and the restricting convex portion 157 are engaged with each other at a time before the maximum. Therefore, in the case of a single disk D having a normal thickness dimension, even if the center moves between the transport rollers 112 and 113 and the sandwiching portion 106, the tooth portion 151 and the restricting convex portion 157 come into contact with each other. However, when two discs D are overlapped and inserted, the tooth 151 and the center of the two overlapped discs D reach between the conveying rollers 112 and 113 and the sandwiching member 106. The restriction convex portion 157 is completely meshed with each other, and the rotation of the roller shaft 111 in the α1 direction is stopped.

  Therefore, it is possible to prevent a double-layered disk or a disk D that is extremely thicker than a normal disk D from being carried in, and half of the disk D moves beyond the transfer unit 17 to the inside of the housing 2. Before doing so, the roller shaft 111 can be stopped.

  Even if the disk D is forced to be pushed in when the roller shaft 111 is stopped, the roller shaft 111 is pressed against the disk D, and the frictional force between the transport rollers 112 and 113 and the roller shaft 111 at this time Therefore, it is difficult to forcibly push the disk D.

  The control unit 20 shown in FIG. 1 starts time measurement with a timer when the transport motor M starts, but the loading detection mechanism 35 does not enter the disk detection state until this measurement time reaches a predetermined time. Sometimes, the conveyance motor M is stopped. Therefore, the driving of the transport motor M does not continue for a long time while the tooth portion 151 of the rotation restricting gear 150 and the restricting convex portion 157 are engaged with each other.

  Further, when the loading detection mechanism 35 cannot detect the disk D within a predetermined time after the start of the transport motor M, the control unit 20 reverses the transport motor M immediately after stopping the transport motor M.

  The power in the reverse direction of the transport motor M is transmitted from the integral gear 146 to the roller gear 144, and the roller shaft 111 is driven in the α2 direction, which is the disc carry-out direction. As shown in FIG. 5, the rotational force of the rotation restricting gear 150 in the α2 direction gives a moment in the β2 direction to the restricting lever 155. The regulating lever 155 that receives a moment in the β2 direction rotates in a direction away from the rotation regulating gear 150.

  Further, since the inclined release surface 151b of the rotation restricting gear 150 rotating in the α2 direction slides on the similarly inclined release side surface 157b of the restricting convex portion 157 of the restricting lever 155, the restricting lever 155 is in the β2 direction. It becomes easy to turn to.

  When the roller shaft 111 rotates in the α2 direction, which is the carry-out direction, the restricting convex portion 157 of the restricting lever 155 hits the tooth portion 151 of the rotation restricting gear 150 in turn, but the restricting convex portion 157 and the tooth portion 151 are in contact. There is no complete meshing, the transport rollers 112 and 113 rotate in the disc carry-out direction, and the disc is carried out from the insertion slot.

  In this manner, when a two-layered disk or a disk D having a thickness dimension larger than the standard is inserted, more than half of the disks do not exceed the transfer unit 17 and are immediately carried out. Therefore, it is possible to avoid a failure such that these disks are sandwiched by a mechanism in the housing and cannot be taken out.

  In the above embodiment, the clamping member 109 that clamps the disk with the transport rollers 112 and 113 is a synthetic resin pad. However, even if the clamping member 109 is a roller whose axis does not move. Good.

  Further, the rotation restricting gear 150 and the restricting lever 155 may be provided in any one of the power transmission paths from the transport motor M to the roller shaft 111.

The top view which shows the whole structure of the disc apparatus of embodiment of this invention, Partial perspective view showing a part of the transfer unit, Partial perspective view showing the transfer unit with the gear removed, A side view showing a state where the roller shaft is regulated, A side view showing a state in which the roller shaft is driven in the disc carrying-out direction,

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Disc apparatus 2 Housing | casing 11 Disc detection mechanism 17 Transfer unit 30 Rotation drive part 35 Loading detection mechanism 40 Head unit 111 Roller shaft 112 First conveyance roller 113 Second conveyance roller 150 Rotation restriction gear 151 Tooth part 151a Restriction surface 151b Release surface 152 Valley portion 155 Restriction lever 157 Restriction convex portion 157a Restriction side surface 157b Release side surface 158 Stopper

Claims (7)

A conveyance roller and a clamping member that are provided inside the insertion port of the housing and sandwich the disk inserted into the insertion port, and the conveyance roller is supported so as to be movable away from the clamping member. And a disc device provided with a repressing member that represses the conveying roller toward the clamping member,
When the distance between the conveying roller and the clamping member is larger than the dimension for conveying a single disk, the rotation of the roller shaft supporting the conveying roller in at least the disk loading direction is restricted. A disk device, characterized in that a rotation restricting member is provided.   When the interval between the transport roller and the clamping member is smaller than a dimension that allows two disks to be stacked and transported and larger than a dimension when a single disk is transported, The disk device according to claim 1, wherein the rotation of the roller shaft in at least the disk loading direction is restricted.   A gear is provided on the roller shaft, and when the transport roller and the roller shaft move to a position away from the clamping member, the rotation restricting member meshes with the gear and the rotation of the roller shaft is restricted. The disk apparatus according to claim 1 or 2, wherein   The rotation of the roller shaft is forcibly restricted by the rotation restricting member when the power of the carry motor is transmitted to the roller shaft and the carry roller is driven in the disk loading direction. The disk device according to any one of the above.   The disk device according to claim 4, wherein the transport motor is stopped when it is determined that the disk cannot be loaded to a predetermined position within a predetermined time after the transport motor is started.   3. The disk device according to claim 1, wherein when the roller shaft is driven in the disk unloading direction by the power of the transport motor, the rotation of the roller shaft is not restricted by the rotation restricting member.   A gear is provided on the roller shaft, and when the roller shaft rotates in the disk loading direction, the rotation restricting member is moved when the transport roller and the roller shaft move to a position away from the clamping member. When the rotation of the roller shaft is restricted by meshing with the gear, and the rotation of the roller shaft in the disk unloading direction, the rotation of the roller shaft is possible without fitting the rotation restriction member and the gear. The disk device according to claim 6.

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