JP2004234856A - Disk loading device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of the impossibility of detecting insertion errors for a plurality of kinds of cartridges since a blocking structure dependent on the outer shape of the cartridge is employed in the case of detecting insertion errors of the cartridge with the reversed the front and rear surface or front or back surface. <P>SOLUTION: A holder for loading a cartridge is provided with a case 101 and a cover 102, and a shutter opener 103 is rotatably attached to the case 101 in the holder. The cover 102 is provided with a reverse insertion prevention rib 102a projected toward the case 101. When the cartridge 300 is oppositely inserted into the holder, the shutter opener 103 is not rotated, and the reverse insertion prevention rib 102a is abutted on the cartridge 300 to prevent the reverse insertion. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to a disc loading device and a cartridge for a device for recording and reproducing information on a recording medium such as a disc using optical means.

  In recent years, optical disks have been widely used as audio disks, video disks, and data storage devices for computers.

  Optical discs include those that can be recorded and reproduced mainly stored in cartridges used for data storage, and those that are used only naked, such as music CDs and CD-ROMs. With the advancement of multimedia technology, digitization of AV equipment and enhancement of AV functions of computers have progressed simultaneously, and there is a demand for optical discs that function as digital discs that are widely used without distinction between AV equipment and computers.

  Furthermore, as personal computers as well as AV equipment have been miniaturized, thinner optical disc apparatuses have been desired.

  Against this background, there has been a strong demand for optical disc devices that are thin and that can handle various types of media.

  However, conventionally, since a loading method for loading a disk into a device is different between a disk stored in a cartridge and a bare disk, a dedicated device is required for each.

  Hereinafter, a conventional apparatus will be described with reference to the drawings.

  First, a loading mechanism of an optical disk device for a cartridge mainly used as a data storage device will be described with reference to the drawings.

  Generally, in such an optical disk device, after the cartridge is inserted into the device, it is necessary to move the cartridge in the direction of the spindle motor and the optical pickup, mount the disk on the turntable, and make it ready for recording or reproduction. is there.

  FIG. 25 is a perspective view showing the structure of a first conventional example of a disk loading mechanism, FIG. 26 is a side view showing the operation thereof, and FIG. 27 is a schematic view showing the dimensional relationship in the thickness direction in the apparatus.

  25 and 26, the cartridge 201 is inserted into the cartridge holder 202 from the front of the apparatus. At this time, the shutter 201a of the cartridge 201 engages with the shutter opener 210 incorporated in the cartridge holder 202 and slides to expose the recording / reproducing area of the disc in the cartridge 201. There are four guide rollers 203 on both sides of the cartridge holder 202, which are inserted into guide grooves 205 provided on both sides of the slider 204, and along the guide poles 207 implanted in the chassis 206. , Which are movably mounted only up and down by a dimension d.

  The slider 204 is shaped so as to sandwich the cartridge holder 202 from below, and is slidably mounted in the direction of arrow A by a dimension S along a guide pin 208 implanted in the chassis 206. The slider 204 is constantly urged in the direction A by the slider spring 209 with respect to the chassis 206. In an initial state, the slider 204 is locked by a lock arm (not shown) so that the slider spring 209 stops in the most extended state. (See FIG. 26A).

  The clamper 214 is rotatably held by a support arm 215, and is disposed at a position of an opening 202 a at the center of the upper surface of the cartridge holder 202 so as to face the turntable 212. The clamper 214 and the turntable 212 are attracted to each other by the attraction force of the magnet and the magnetic piece incorporated therein.

  The support arm 215 is rotated according to its position by a cam (not shown) provided on the slider 204, and moves up and down the clamper 214. In the initial state, the clamper 214 is lifted to a position where it does not interfere with the cartridge 201 to be inserted (see FIG. 26A).

  The lock arm is pushed by one corner of the cartridge and released when the cartridge 201 is inserted. When the lock arm is released, the slider 204 slides in the direction A by the slider spring 209, the guide roller 203 moves along the guide groove 205, and the cartridge holder 202 is dimensioned in the direction of the chassis 206 (arrow B). Move by d. At the same time, the support arm 215 is rotated by the slider 204, and the clamper 214 moves toward the turntable 212. When the cartridge descends, the disc in the cartridge 201 rides on the turntable 212, is mounted so as to be rotatable with the clamper 214 sucked from above, and approaches the optical pickup 213 to a distance at which recording and reproduction can be performed (FIG. 26 (b).).

  When the cartridge is removed from the apparatus, the slider 204 is pulled back by the loading motor 216 against the tensile force of the slider spring 209, and the clamper 214 and the cartridge holder 202 are raised to the initial position. As a result, the disk is separated from the turntable, and the cartridge can be taken out.

  As shown in FIG. 27, when the cartridge 201 is inserted, a distance (dimension D) exceeding the thickness of the cartridge 201 is required between the turntable 212 and the clamper 214.

  Next, as a second conventional example, a loading mechanism of an optical disk device for a bare disk such as a music CD or a CD-ROM will be described with reference to the drawings (for example, Patent Document 1). FIGS. 28 to 29 show a second conventional example. Reference numeral 53 denotes a main chassis, which includes a disk motor 56, a turntable 58 attached to the shaft, a center cone 58a on the turntable 58 which engages with a center hole 45a of the disk 45 as a recording disk, and a guide shaft 55. Thus, a head 43 slidably provided in the Y1-Y2 direction and to which a coil 43a for a linear motor is attached, and a magnetic yoke 54 for a linear motor are attached. One end 53a of the main chassis 53 is provided with a hole 53b for a pivot point, and the pivot shaft 51 is passed through the hole 53b.

  Similarly, a hole 47b for a rotation fulcrum is provided at one end 47a of the clamp lever 47, and a rotation support shaft 51 is also passed through the hole 47b. Fixed.

  The tray 41 is mounted inside the housing 42 such that the rack 41a formed on the back surface and the output gear of the loading motor 57 equipped with a reduction gear unit are engaged with each other to be able to move in parallel in the Y1-Y2 direction. Have been. The tray 41 has a dish-shaped depression 46 on which a disc 45 can be placed and held. If the recess 46 is formed in two stages, the small-diameter disk 60 can also be placed.

  Further, a cam 50 is engaged with the rear portions of the main chassis 53 and the clamp lever 47. The cam 50 is driven by a geared motor 49. The main chassis 53 and the clamp lever 47 rotate around the rotation support shaft 51 depending on the rotation position of the cam 50, and approach or separate from each other. 40 is an insertion port, 41b is an opening, and 48 is a clamper. The operations of the loading motor 57 and the geared motor 49 are performed by ordinary microcomputer control or the like. The position of the cam 50 or the tray 40 driven by each motor is detected by a normal micro switch or the like. These details are not shown, and the description is omitted.

  29 (a), (b) and (c) show the operation of the conventional disk loading apparatus.

  That is, when the disc 45 is used in the disk recording / reproducing apparatus, when the eject / load switch 61 (FIG. 28) is pressed, the tray 41 moves in the Y2 direction by the driving force of the loading motor 57 under the control of the microcomputer, and (A) of FIG. At this time, the clamp lever 47 and the main chassis 53 are at positions separated from each other about the pivot 51.

  In this state, when the disc 45 is placed in the depression 46 of the tray 41 and the eject / load switch 60 is pressed, the tray 41 is moved in parallel into the housing 42 through the insertion port 40 by the driving force of the loading motor 57, and FIG. ).

  Next, the cam 50 rotates, and the clamp lever 47 and the main chassis 53 approach each other around the pivot 51 as shown in FIG. 29C, and the disk 45 is sandwiched between the clamper 48 and the turntable 58 of the disk motor 56. Then, it engages with the center cone 58a and becomes rotatable. In this state, reproduction or recording of information from the disk 45 is performed by the head 13.

When the disk 45 is taken out of the apparatus, an operation completely opposite to the above operation is performed.
JP-A-7-161112

  However, in the above-described conventional disk loading device for a disk drive, generally, the prevention of insertion of a cartridge upside down or upside down depends on the shape of the cartridge. There is a problem that it is difficult to prevent reverse insertion.

  The present invention has been made to solve the above-mentioned problems, and enables a reduction in the thickness of the entire apparatus without creating a large excess space in the apparatus, and also enables loading of a cartridge and a bare disk, and also enables vertical installation even in a horizontal installation. It is an object of the present invention to provide a disk loading device that can be used in installation.

  In order to solve the above-mentioned problems, in the disc loading device of the present invention, a regulating means for preventing the cartridge from being mounted in a direction other than the regular direction is provided at an opening of the cartridge which appears when the cartridge is stored in the regular direction in the holder. .

  In the disk loading device of the present invention, when the cartridge is inserted into the holder, the shutter of the cartridge is opened by the shutter opening / closing means provided inside the holder. A disc loading device that handles a plurality of cartridges having different shapes is provided in the opening portion of the cartridge that appears when the cartridge is stored in the holder in the normal direction by providing a restricting unit that prevents the cartridge from being mounted in a direction other than the normal direction of the cartridge. It is now possible to prevent the cartridge from being inserted back and forth or from the front and back.

  In the disk loading device according to the first and second aspects, when the cartridge is inserted into the holder, the shutter of the cartridge is opened by the shutter opening / closing means provided inside the holder. The opening of the cartridge, which appears when the cartridge is stored in the holder in the normal direction, is provided with a restricting means for preventing the cartridge from being mounted in a direction other than the normal direction. It has an effect of making it difficult to cause erroneous insertion such as insertion of a type of cartridge.

  Hereinafter, the configuration of the disk loading device according to the first embodiment of the present invention will be described with reference to the drawings.

  The disk loading device of the present embodiment can be used in horizontal and vertical installations, but for convenience of explanation, the following description will be made with the disk loading device installed horizontally.

  In the present embodiment, a bare disk (hereinafter, referred to as a large disk) such as a music CD or a CD-ROM having a diameter of 12 cm, and a large disk (hereinafter, referred to as a cartridge) stored in a cartridge are targeted. These two types of recording media are collectively referred to simply as media. The loading mechanism considers the form of the medium, and its recording / reproducing method and recording density are not limited to the above examples.

  First, the overall configuration of the disc loading apparatus will be described, and then the configuration of each part will be described in detail.

  FIG. 1 is an exploded perspective view showing a configuration of a disk loading device according to a first embodiment of the present invention, FIG. 2 is a plan view showing an internal configuration thereof, and FIG. 3 is a perspective view of a cartridge and a bare disk.

  In FIG. 1, the disk loading device according to the first embodiment of the present invention includes a base unit U1, a holder unit U2, and a clamp unit U3.

  In the figure, the coordinate system indicating the direction is represented by X in the depth direction of the apparatus, Y in the width direction, and Z in the height direction.

  The base unit U1 incorporates a chassis 3 in which an optical head 7 and a turntable integrated disk motor 2 are mounted on a base 8, and an elevating mechanism for elevating the chassis 3. The holder 100 shown in FIG. 2 is placed on the guide portion 8f on the side surface inside the base 8, and the top plate 25 is attached from above.

  The top plate 25 is provided with a clamp lever 27 having a clamper 26, and forms a clamp portion U3.

  The loading motor 111 and the gear train 112 are incorporated in the holder 100 of the holder unit U2, and the final gear 112a of the gear train 112 meshes with the rack 13a provided on the slide rack 13 attached to the base 8, The holder 100 is driven in the X1-X2 direction. The driving current of the loading motor 111 is supplied from the base side via the flexible 113.

  Further, the holder 100 incorporates a pair of left and right disk holding mechanisms for guiding and holding a bare disk, a shutter opener 103 for opening and closing the cartridge shutter, a cartridge locking mechanism, a holder locking mechanism, and a cartridge biasing spring. ing.

  Further, a switch 114 and a switch 115 are provided on the flexible printed circuit board 113 (hereinafter, referred to as flexible), and are turned on / off by the shutter opener 103 and the connecting plate 108, respectively.

  FIG. 2 is a plan view showing a state where the holder unit U2 is incorporated in the base unit U1.

  The holder 100 is pulled out by the incorporated loading motor 111 by the distance S shown in FIG. 2 in the X1 direction so that about half of the held disk is exposed, and is in a standby state for media exchange.

  FIG. 3A is a perspective view of the cartridge 300 in a state where the shutter 300a is closed. 300c is a notch for holding, and 300f is a positioning hole.

  While the cartridge 300 is being inserted into the holder 100, the front end of the shutter opener 103 of the holder 100 engages with the concave portion 300b at the front end of the shutter 300a. When the cartridge 300 is inserted as far as it will go, the shutter 300a opens to the state shown in FIG. Thus, the disk 300e stored therein is exposed. At this time, the connecting portion 300d which is thinner than the thickness of the cartridge 300 is also exposed. Further, the shutter 300a may be either one-sided or two-sided.

  (C) is an external view of the large disk 301.

  Hereinafter, each configuration of the disc loading device will be described in detail.

  First, the configuration of the holder 100 will be described.

  FIG. 4 is an exploded perspective view showing the internal configuration of the holder 100, and FIG. 5 is a transparent perspective view showing an assembled state.

  In FIG. 4, a holder cover 102 is mounted on a holder case 101 to form a box-shaped holder 100. An opening on the X1 side serves as a media insertion port, and media is inserted in the X2 direction. The height of the internal space is a height obtained by adding an appropriate gap to the thickness of the cartridge 300, and the width is a width obtained by adding a margin of the holding mechanism of the bare disk to the width of the cartridge. . The bottom surface of the holder case 101 has an opening into which the optical head is inserted from below, and the innermost center portion is cut out from above and below to form a thin connecting portion 101a. The holder cover 102 is divided into two right and left parts, has the same width as the connecting part 101a, and has a space in the center part of the holder. The holder cover 102 is provided with a rib 102a for preventing reverse insertion of the cartridge.

  The shape of the insertion opening of the holder case 101 and the holder cover 102 is such that both left and right ends protrude in the X1 direction and have a recess at the center. Only at the left and right protruding portions, the bottom surface of the holder case 101 extends inward from the holder cover 102 to provide the receiving portion 101h. When the cartridge 300 is inserted, the front end of the cartridge 300 is temporarily put on the receiving portion 101h to insert the cartridge 300. To facilitate.

  At the back end of the holder 100, a portion for attaching the loading motor 111 and the drive gear train 112, a portion for attaching the shutter opener 103, a portion for attaching the connecting plate 108, the holder lock 109, and two projections 100a on the lower side of the bottom surface. , 100b, and the others are symmetrical.

  The gear 112 a at the last stage of the drive gear train protrudes from the hole 101 c on the bottom surface of the holder case 101 to the lower side of the holder, and interlocks with the drive mechanism incorporated in the case 8. The operation of the gear 112a and the two projections 100a and 100b will be described later.

  The shutter opener 103 is rotatably incorporated around a shaft 100e formed by a hole and a boss at the same position of the holder case 101 and the holder cover 102, and the projection 103a engages with an arc groove 100f concentric with the hole 100e. , The rotation angle is regulated. When the end of the arc groove 100f on the side of the media insertion opening is urged by the spring 160, the leading end portion 103b comes to a position where it comes into contact with the concave portion 300b of the inserted cartridge shutter 300a. The distal end portion 103b of the shutter opener 103 has a cylindrical shape whose height is substantially equal to the thickness of the cartridge 300, and is cut out on the side where the medium is inserted, leaving the upper and lower ends. This prevents the inserted bare disk from slipping up and down after coming into contact with the distal end portion 103b.

  The projection 103d on the opposite side of the shutter opener 103 protrudes laterally from the hole 101d on the side surface of the holder case 101, and is housed in the holder when the shutter opener 103 is rotated backward. When the holder 100 is pulled out of the apparatus and the medium is exchanged, an escape hole 8e is provided in the side wall of the base 8 at a position corresponding to the projection 103d, so that when the holder 100 is pulled in, the shutter opener 103 is quickly moved to the holder. It is configured to rotate to the far end.

  The arm portion 103c of the shutter opener 103 is cut out from above and below, and has a thickness substantially equal to that of the connecting portion 101a at the back end of the holder case 101.

  The projection 103e of the shutter opener 103 turns on a switch 114 provided on the flexible 113 at a fixed angle position of the shutter opener 103.

  The opener leaf spring 103f provided on the shutter opener 103 comes into contact with the wall at the far end of the holder case 101 at the end of the rotation of the shutter opener 103, and applies an urging force to the shutter opener 103.

  Next, the holder lock mechanism will be described.

  The holder lock mechanism includes an entrance lever 107, a connecting plate 108, and a holder lock 109.

  The holder lock 109 has a hook 109a and a rising portion 109b at both ends of a shaft 109d, and is attached to the lower surface of the connecting plate 108 so as to be rotatable around the shaft 109d. The connecting plate 108 is rotatably mounted around the shaft 100e in the dug 101f provided on the bottom surface of the holder case 101. The holder lock 109 is urged by a spring 160 in a direction in which the rising portion 109b is directed toward the inside of the holder.

  The elongated hole 108a at the end of the connecting plate 108 engages with and engages with the projection 107b at the end of the entrance lever 107. The entrance lever 107 is rotatably mounted around the axis 100i in the range of the arc groove 100g, and is urged by the spring 105 to the inside of the holder together with the disk holder 104. As soon as the cartridge 300 is inserted, the entrance lever 107 is pushed outward in the direction of the holder, the connecting plate 108 also rotates outward, and the hook 109a of the holder lock 109 is inserted into the holder 101 through the hole 101g on the side surface of the holder case 101. It is configured to protrude out of the. In this state, the rising portion 109b of the holder lock 109 has entered the path of the cartridge 300, and when the cartridge 300 reaches the innermost position, it is pushed outward, and the hook 109a is rotated inward to rotate the inside of the holder. Is stored in. That is, the hook 109a protrudes out of the holder only during the insertion of the cartridge 300.

  The projection 108b of the connecting plate 108 normally turns on a switch 115 provided on the flexible board 113. When the connecting plate 108 is turned by the turning of the entrance lever 107, the switch 115 is turned off immediately.

  Next, the cartridge lock mechanism will be described.

  The rear end of the disc holder 104 has an elastic structure including protrusions 104e and 104f and an arm 104g. When the cartridge 300 is inserted, the inner protrusion 104f is pushed and spread by the side surface of the cartridge 300, The outer protrusion 104e once protrudes to the side surface of the holder. When the notch 300c of the cartridge 300 reaches the position of the protrusion 104f, the protrusion 104f enters the notch 300c, and the protrusions 104e and 104f return to their original positions due to the elasticity of the arm 104g.

  Finally, a disk holding mechanism for guiding and holding a bare disk will be described.

  The disk holding mechanism includes a disk holder 104, a holder leaf spring 105, and an entrance lever 107.

  The disk holder 104 is a member that regulates the position in the height direction of the bare disk with a slit 104a having a slope toward the inside of the holder, and regulates the position in the radial direction of the bare disk with holding portions 104b at both ends of the slit 104a. is there.

  The disc holder 104 is rotatably engaged with the entrance lever 107 at the distal end, and protrusions 104d provided at two upper and lower positions are respectively inserted into the guide grooves 100h.

  The entrance lever 107 is rotatably mounted around the shaft 100i, the projection 107b is inserted into the arc groove 100g, and is urged by the holder leaf spring 105 together with the disk holder 104 toward the inside of the holder. Normally, the projections 104d and 107b are stopped at positions where they come into contact with the ends inside the holder of the guide groove 100h and the arc groove 100g, respectively. At this time, the pair of left and right disc holders 104 is held parallel to the X direction, and the interval between them is smaller than the diameter of the bare disc to be inserted. The inserted bare disk abuts against the tip of the shutter opener 103 and rotates the shutter opener 103 to the back, while once expanding the entrance lever 107 and the tip of the disc holder 104, enters the gap between the slits 104a, and enters the disc holder. 104 returns to the original position.

  At this time, the shutter opener 103 is in contact with the bare disk when the switch 114 is still OFF. From this position, when the bare disk is slightly pushed in such that the rear end of the disk holder 104 is widened, the projection 103e switch 114 of the shutter opener 103 is turned on. When the bare disk is released, the disk holder 104 returns to the original position.

  The four abutting portions 104b are widely arranged with respect to the diameter of the bare disk to provide a constant gap between the outer periphery of the disk and the slit 104a, and the width of the slit 104a is also fixed to the thickness of the disk. For example, the disk can be rotated while the disk holder 104 remains at the original position.

  When the cartridge 300 is inserted, the corner of the cartridge 300 pushes down the entrance lever 107 toward the back of the holder. The contact surface is provided with a recess so that it can be pushed down smoothly. When the entrance lever 107 rotates, the disk holder 104 also moves, and the tip of the disk holder 104 opens greatly. When the cartridge 300 is further inserted, the disc holder 104 is also pushed down by the cartridge 300, and the disc holder 104 and the entrance lever 107 are housed in a straight line at the right and left ends of the holder, so that the path of the cartridge 300 is secured.

  With the above configuration, the disc holder 104 is on standby at a position where the bare disc can be held, and when the cartridge 300 is inserted, the entrance lever 107 is pushed at the corner to store the disc holder 104 at the left and right ends of the holder. I do.

  A cartridge urging spring 120 is incorporated in the holder case 101, and presses the corner of the inserted cartridge 300 in the direction of the holder cover 102 (Z1 direction).

  Subsequently, the configuration of the clamp unit will be described.

  FIG. 6A shows the configuration of the clamper 26. A magnet 26c is stored together with a magnetic body 26d in a clamper 26b in a center hole of a clamp lever 27 made of a magnetic material, and is fixed by a clamp cover 26a. In this state, the clamper 26 is magnetically stable with the clamper lever 27, and magnetically floats in a direction in which the magnetic body 26d and the clamp lever 27 are separated with the magnet 26d interposed therebetween.

  FIG. 6B shows a case where the disk motor 2 is located near the clamper 26. The clamper 26 is attracted to the magnetic material of the disk motor 2 to cancel the magnetic levitation with the clamp lever 27, and when there is a disk. Magnetically attracted onto the turntable of the disk motor 2 by the clamper 26.

  FIG. 6C shows a case where the disk motor 2 having a magnetic material in the vicinity of the clamper is not in the vicinity of the clamper 26. The bent portion 25a of the top plate 25 contacts the clamper 26, and the clamper 26 is connected to the clamp lever 27. Magnetically levitates in a direction away from the disk motor 2 as a magnetically stable state.

  7A and 7B are views showing a base portion of the disk loading device of the present invention, wherein FIG. 7A is a perspective plan view showing only the base portion, and FIG. 7B is a side sectional view.

  In FIG. 7A, reference numeral 1 denotes a housing of a disc loading device, which is a shutter for closing the opening 21a on the front surface of the housing 1 when the printed circuit board 20, the panel 21, and the holder 100 on which circuit components for recording and reproduction are mounted are stored. 22 are provided.

  The panel 21 is provided with a button (not shown) for unloading and storing the holder 100 and a hole (not shown) for forcibly ejecting the cartridge 300 or the bare disk (large disk 301) when power is not supplied. Have been.

  Reference numeral 8 denotes a base, which is elastically supported by the housing 1 via a damper 9 for reducing external vibration and impact. A torsion leaf 11 is fixed to the chassis 3, and the torsion leaf 11 is attached to the base 8 so that the tip 3 a of the chassis 3 is constantly urged in the Z2 direction.

  The elevating cam 10 is rotatably supported by the shaft 8a of the base 8, and the elevating cam 10 is rotated in the direction of the arrow R1 by the driving means including the reduction gear 112 and the loading motor 111 provided in the holder 100. At this time, the slope 3a engages with the slit 3b of the chassis 3 to push the tip 3a of the chassis 3 in the Z1 direction against the spring biasing force of the torsion leaf 11, thereby making the chassis 3 substantially horizontal. At this time, the chassis 3 is supported on the horizontal surface at the end of the slope 10a. When the lifting cam 10 is rotated in the direction of the arrow R2, the chassis 3 is inclined from the horizontal position in the Z2 direction along the slope 10a of the lifting cam 10 by the spring biasing force of the torsion leaf 11. A head unit biasing spring 40 (not shown) is provided between the elevating cam 10 and the base 8, and the holder 100 is biased against the top plate 25 via the chassis 3.

  The upper surface of the slide rack 13 has a rack shape 13a that meshes with the drive gear 112a, is engaged with the projection 8b of the base 8, is slidably held in the X direction, and engages with the pin 10b of the elevating lever 10 by the groove 13c. . When the slide rack 13 is fixed by the engagement between the claws 12c of the clutch 12 and the projections 8c of the base 8, the holder 100 is movable, and the engagement between the claws 12c of the clutch 12 and the projections 8c of the base 8 is released. At times, the slide rack 13 slides and the elevating cam 10 becomes rotatable.

  The rib 10a of the lifting cam 10 comes into contact with the drive detection switch 23b when the loading operation in which the holder 100 is completely stored and the chassis 3 is substantially horizontal is completed, and the central processing unit (MPU) 34 shown in FIG. Order a stop.

  The stopper 36 is rotatably supported by a shaft 8d of the base 8, and a shaft 36a at one end is engaged with the guide groove 10e of the elevating cam 10 to form a link mechanism. The rib 36b at the other end is located at a position facing the protrusion 22a of the shutter 22, and during the loading operation for storing the holder 100 in the apparatus, the protrusion 22a is separated from the rib 36b when the shutter 22 is closed, so that the lifting cam When the shutter 22 is open, the projection 22a and the rib 36b of the stopper 36 are in contact with each other and hinder the rotation of the elevating cam 10 and the stopper 36 while the shutter 22 is open.

  The forcible eject lever 14 is urged in the X1 direction by a forcible eject spring 15, is slidably held in the X direction between the base 8 and the slide rack 13, and has a distal end engaged with an engaging portion 100c below the holder 100. It has claws 14a that fit together. When the media stored in the holder 100 in the apparatus is taken out when power is not supplied due to a power failure or the like, a pin is inserted from the hole (not shown) for forced ejection of the panel 21 while compressing the forced eject spring 15 in the X2 direction. When the claw 14a is engaged with the projection 100c at the lower portion of the holder 100, the holder 100 is ejected from the apparatus against the load of the driving system. Thereafter, if the holder 100 is pulled by hand to the carry-out position, the cartridge 300 or the bare disk stored in the holder 100 can be taken out.

  The disc regulating member 29 is composed of a roller 29a and a coil spring 29b made of rubber having a lower hardness than the polycarbonate of the disc base, and the bare disc stored in the holder 100 between the unloading completion position and the storage completion position of the holder 100. In addition, the disc 3 is in contact with the disc 300e in the cartridge 300, and the posture is regulated so that the disc 3 is obliquely urged to the base 8 and these discs become substantially parallel to prevent contact with the turntable 2 on the chassis 3. . When the storage of the holder 100 in the disk loading device is completed, the lower surface 100d of the holder 100 and the roller 29a come into contact with each other, the disk regulating member 29 is stored in the base 8, and the regulation of these disks by the disk regulating member 29 is released. You.

  In addition, the base 8 is provided with a clutch 12 for switching the movement of the slide rack 13, a drive detection circuit board 23 including a switch 23 a for detecting completion of unloading of the holder 100 and a switch 23 b for detecting completion of storage of the holder 100.

  The operation of the driving mechanism will be described later in detail.

  The chassis 3 includes an integrated disk motor 2 having a turntable 2a, a guide shaft 6, a feed motor 5, a cartridge detection circuit board 18 elastically supported via a switch circuit board support 17, and pins for positioning cartridges. 16 are provided. A magnetic body (not shown) is provided on a surface of the turntable 2a facing the clamper 26, and generates an attractive force with the magnet 26c in the clamper 26.

  A head transfer lever 4 is provided on the guide shaft 6 such that the head transfer lever 4 can move in the direction between the chassis 3 and one end of the head transfer lever 4 can be brought into contact with the optical head 7 and the other end can be brought into contact with the forced eject lever 14.

  The optical head 7 is mounted on the guide shaft 6 and reciprocates in the X1 and X2 directions by the feed motor 5, and has a laser emitting unit for recording and reproduction and a light receiving unit for receiving the reflected light of the disk (300e or 301). .

  Reference numeral 26 denotes a clamper attached to the top plate 25. Inside the clamp 26, a magnet 26c for adsorbing the turntable 2a and holding the disk is provided. The clamp 26 is urged in a direction away from the turntable 2a by a clamp pressing spring 28 via a clamp lever 27 projecting from the top plate 25 to the holder 100 side. The top plate 25 is attached to the base 8 by an attaching means such as a locking claw. When the holder 100 moves from the unloading completion position to the storage completion position, the clamp lever 27 is pushed by the operation piece 101a of the holder 100 to clamp the top plate 25. 26 rotates against the clamp pressing spring 28 and presses each disk onto the center cone of the turntable 2a. On the other hand, when the holder 100 starts moving to the carry-out position side, the operation piece 101a moves away from the clamp lever 27, so that the clamper 26 moves away from the turntable 2a. In the case of a system in which a magnetic metal hub is provided on the disk side and a magnet is provided on the turntable 2a side and the disk is held by attracting the metal hub with the magnet, the clamper 26 is not required. It is only necessary to attach necessary mechanisms according to the requirements.

  FIG. 8 shows a block diagram of the disk loading device of this embodiment, which is provided on the main chassis 3 and the circuit board 20. That is, the laser drive circuit 30 operates to irradiate the disk (300e or 301) with laser from the optical head 7, receive a signal from the disk from the light receiving section of the optical head 7, and process the signal by the reproduction signal processing circuit 31. 32 is a modulation / demodulation circuit, 33 is a RAM of a memory, 34 is a central processing unit (MPU), and 35 is a personal computer (PC).

  FIG. 9 is a configuration diagram showing connection of each switch of the holder 100 and the base 8. The switches 114 and 115 of the holder 100, together with the switches 23a and 23b of the base 8, are monitored by the central processing unit 34.

  FIG. 10 shows a method of determining the type and state of the medium stored in the holder 100 without using the two switches 114 and 115 to move the medium into the apparatus when the holder 100 is in the eject state. It is a thing. As a result, immediately after storing various media in the holder 100, switching of the lens of the optical head to adapt to the media, laser on, rotation start, learning of servo gain, laser light amount, etc. Since the start-up procedure can be changed to suit, the loading time can be reduced. Further, since the detection at the time of abnormality becomes possible, the driving of the loading motor 111 is prohibited, so that the destruction of the apparatus can be prevented.

  The operation of the disk loading device configured as described above will be described.

  FIG. 11 is an external perspective view showing a state when a medium is inserted. Due to the configuration of the holder 100 described above, the loading mechanism can be used in any of the vertical and horizontal postures. (A) and (b) show insertion of a cartridge, and (c) and (d) show insertion of a large disc.

  When a button provided on the front of the apparatus is pressed, the holder 100 is pulled out to the position shown in the figure, and the apparatus enters a standby state for media insertion. When the button is pressed again or the holder 100 is pressed in this state, the holder 100 is pulled into the apparatus.

  a) Loading operation when media is not mounted on the holder.

  FIG. 12 to FIG. 14 are plan views of the loading operation when the medium is not loaded in the holder 100. FIG. The time-series operation states are shown in the order of (a) to (f) in FIGS.

  FIGS. 15 and 16 show detailed plan views of the upper portion of the disc loading device when no media is loaded in the holder 100. FIGS. 15 and 16 (a) to (f) respectively show FIGS. FIG. 14A to FIG. 14F correspond in time series.

  FIGS. 17 and 18 show detailed plan views of the lower part of the disc loading device when no media is loaded in the holder 100. FIGS. 17 and 18 (a) to (f) respectively show FIGS. FIG. 14A to FIG. 14F correspond in time series.

  FIG. 19 is a side sectional view of the loading operation when no media is loaded in the holder 100. (1) to (4) in the figure show time-series operation states.

  FIG. 12A shows a state in which the unloading of the holder 100 has been completed. The rib 100a on the lower surface of the holder 100 comes into contact with the switch 23a on the drive detection switch circuit board 23, and stops accurately at the carry-out position of the holder 100. In this state, either the bare disk or the cartridge is selectively mounted. In the state shown in FIG. 15A, the claws 12c of the clutch 12 are engaged with the ribs 8c of the base 8, as shown in FIG. Fixed. Also, as shown in FIG. 17A, the projection 103d of the shutter opener 103 is rotatably provided in alignment with the hole 8e on the side surface of the base 8. When the cartridge 40 is mounted in the holder 100, the shutter opener 103 rotates to open the shutter 41 in accordance with the insertion of the cartridge 40 into the holder 100.

  In this state, as shown in FIG. 19A, the chassis 3 is biased against the base 8, and the clamper 26 is pressed against the top plate 25 via the clamp lever 27 by the biasing force of the clamp pressing spring 28. Has been applied. The cartridge detection circuit board 18 is pressed against the bottom surface of the base 8 by the urging force of the switch circuit board support 17. The disc regulating member 29 is lifted from the base 8 to the central opening of the holder 100 by the return force of the coil spring 29b.

  In addition, the rib 36b of the stopper 36, which is engaged with the guide groove 10e of the elevating cam 10 to form a link mechanism, and the protrusion 22a of the shutter 22 are separated from each other, so that the operation of the shutter 22 from the open state to the closed state is hindered. It is configured so that it cannot be performed.

  FIG. 12B shows the storage start state of the holder 100. As shown in FIG. 15B, a button (not shown) of the panel 21 is pressed, the loading motor 111 in the holder 100 rotates, and the driving force is transmitted to the driving gear 112a via the gear group 112. Then, the holder 100 starts moving in the X2 direction by engaging with the rack portion 13a of the slide rack 13 fixed to the base 8. At this time, as shown in FIG. 17B, the projection 103d of the shutter opener 103 is separated from the hole 8e on the side surface of the base 8, and when the large disc 301 is mounted on the holder 100 or when the medium is not mounted, The shutter opener 103 rotates in the R2 direction to a position where the shutter opener 103 does not interfere with the large disc 301. In this state, as shown in FIG. 19B, the holder 100 is gradually stored in the apparatus.

  FIG. 13C shows a state where the holder 100 is further housed in the disk loading device.

  FIG. 13D shows a state where the storage of the holder 100 in the disk loading device is completed. As shown in FIG. 16D, the rib 100b on the lower surface of the holder 100 comes into contact with the claw portion 12d of the clutch 12, and the engagement with the rib 8c of the base 8 is released. As a result, the restraint of the slide rack 13 by the clutch 12 is released, and the slide rack 13 can slide in the X1 direction thereafter. At this time, the shutter 22 is in the closed state, but the rib 36b of the stopper 36 and the protruding portion 22a of the shutter 22 are still apart from each other.

  At the same time, the deformed hole 101b of the holder 100 and the boss 12b of the clutch 12 are engaged as shown in FIG. In this state, as shown in FIG. 19C, the rib 101a of the holder 100 and the end 27a of the clamp lever 27 come into contact with each other, the clamp lever 27 rotates about the clamp pressing spring 28, and the clamper 26 turns the turntable. It descends to the position facing 2a.

  The roller 29a of the disc regulating member 29 comes into contact with the lower surface 100d of the holder 100, and the disc regulating member 29 is stored in the base 8.

  FIG. 14E shows the operation of the slide rack 13 after the holder 100 is completely stored in the disk loading device. As shown in FIG. 16 (e), the slide rack 13 slides in the X1 direction due to the driving force of the drive gear 112a, and the boss 12b of the clutch 12 engaged with the slide rack 13 rotates in the R1 direction. The holder 100 is held at a predetermined position on the base 8 in order to regulate the operation of the holder 100 in the deformed hole 101b. When the lifting cam 10 engaged with the boss 10b and the groove 13c of the slide rack 13 rotates in the R1 direction about the shaft 8a of the base 8 with the movement of the slide rack 13 in the X1 direction, the chassis 3 tilts the inclined rib. 10a comes into contact with the groove 3b of the chassis 3 and gradually rises from an inclined state to a substantially horizontal state in accordance with the rotation of the elevating cam 10 while resisting the urging force of the torsion leaf 11.

  At the same time, the stopper 36 also rotates in accordance with the rotation of the elevating cam 10, and the rib 36 b approaches the position facing the projection 22 a of the shutter 22 from a position away from the projection 22 a. At this time, if the shutter 22 is intentionally opened, the rib 36b of the stopper 36 and the protrusion 22a of the shutter 22 come into contact with each other, and the operation of the elevating cam 10 forming a link mechanism with the stopper 22 is hindered. Does not complete. If the loading motor 111 is stopped or reversed by the central processing unit 34, the danger of touching the rotating bare disk 301 can be avoided.

  FIG. 14F shows a state where the movement of the slide rack 13 is completed. As shown in FIG. 16F, the movement of the slide rack 13 in the X1 direction by the driving force of the driving gear 112a is completed, and the rotation of the elevating cam 10 in the R1 direction causes the chassis 3 to be placed on the horizontal plane of the inclined rib 10a. And the chassis 3 is in a substantially horizontal state. The rib 10a of the elevating cam 10 comes into contact with the drive detection switch 23b when the loading operation in which the chassis 3 is substantially horizontal is completed, and the central processing unit (MPU) 34 stops the loading motor 111. In this state, as shown in FIG. 19D, when the rotation of the chassis 3 is completed, the chassis 3 becomes substantially horizontal, the turntable 2a on the chassis 3 rises to a position facing the clamper 26, and the cartridge is detected. The circuit board 18 rises from the base 8 by the return force of the switch circuit board support 17 and rises to a predetermined position in the holder 100, and the loading operation is completed.

  At the same time, the stopper 36 also rotates in accordance with the rotation of the elevating cam 10, and the rib 36 b stops at a position facing the projection 22 a of the shutter 22 at a predetermined distance. When the shutter 22 is on the fixed side and the stopper 36 is on the movable side via the damper 9, it is necessary to take into account the impact fluctuation as the two contact distances. In this state, since the rib 36b and the protruding portion 22a are close to each other, the contact distance cannot be large even if the shutter 22 is intentionally opened. The danger of touching the bare disk 301 inside can be avoided.

  The discharging operation of the holder 100 is performed in a completely reverse order to these operations. When the loading motor 111 rotates in the opposite direction to the above, the slide rack moves in the X2 direction, rotates the elevating cam 10 in the R2 direction, and the chassis 3 rotates in the Z2 direction. When the movement of the slide rack 13 in the X2 direction is completed, the holder 100 starts to move in the X1 direction by the driving force of the drive gear 112a, and the boss 12b of the clutch 12 that has restrained the holder 100 by the deformed hole 101b of the holder 100 is R2. Start turning in the direction. By rotating the clutch 12 in the R2 direction, the claw portion 12c of the clutch 12 is engaged with the boss 8b of the base 8, and the slide rack 13 is fixed to the base 8 by the boss 12a of the clutch 12. Thereafter, the holder 100 is unloaded from the disc loading device until the rib 100a on the lower surface side of the holder 100 comes into contact with the switch 23a of the drive detection circuit board 23, and stops at the holder unloading completion position shown in FIG.

  b) Loading operation when the cartridge is mounted on the holder upside down or upside down. FIG. 20A shows the case where the cartridge 300 is mounted on the holder 100 in a normal use orientation, and FIG. FIG. 21 shows the state of the holder 100 when the cartridge 300 is mounted upside down and the cartridge 300 is mounted upside down.

  As shown in FIG. 20 (a), the reverse insertion prevention rib 102a is arranged so as not to contact the discs stored in the openings 300d and 300e of the cartridge 300 inserted in the normal use orientation.

  As shown in FIG. 20B, when the cartridge 300 is inserted into the holder 100 upside down, if the shutter engagement portion 300b and the rib 103b of the shutter opener 103 are open on both sides, the cartridge 300 300 is stored in the holder 100 without any problem.

  When the single-sided or double-sided cartridge 300 other than the above is inserted into the holder 100, the shutter opener 103 rotates without opening the shutter 300a. When the reverse insertion preventing rib 102a comes into contact with the shutter 300a during the rotation of the shutter opener 103, the insertion of the cartridge 300 is hindered and the cartridge 300 is not completely mounted on the holder 100. In this state, since the cartridge 300 is half-inserted into the holder 100, the rear end of the disk holder 104 is expanded by the inner protrusion 104 f by the side surface of the cartridge 300, and the outer protrusion 104 e is set by the side surface of the holder 100. The holder 100 protrudes and engages with the side hole 8h of the base 8, thereby restricting the movement of the holder 100 into the apparatus.

  When the cartridge 300 is pulled out of the holder 100, the restraint of the holder 100 is released in a procedure reverse to this operation.

  Further, as shown in FIG. 21, when the cartridge 300 is inserted into the holder 100 upside down, the shutter 100 cannot rotate to open the shutter 300 a due to the insertion of the holder 100. The contact of the shutter 300a hinders the insertion of the cartridge 300 and prevents the cartridge 300 from being completely mounted on the holder 100. Since the cartridge 300 is half-inserted into the holder 100, the rear end of the disk holder 104 has the inner protrusion 104 f pushed and expanded by the side surface of the cartridge 300, and the outer protrusion 104 e projects to the side surface of the holder 100, and the base Since the holder 100 is engaged with the side hole 8h, the movement of the holder 100 into the apparatus is restricted.

  When the cartridge 300 is pulled out of the holder 100, the restraint of the holder 100 is released in a procedure reverse to this operation.

  FIG. 22 is a diagram illustrating a disk loading apparatus according to the first embodiment, in which, immediately after a medium is loaded in the holder 100, a shutter opening / closing means of the cartridge provided in the holder 100 and its position detecting means, and a bare disk holding means and its posture detecting means. 5 shows an example in which the type and storage state of the media determined by the above are displayed on the panel 21.

  FIG. 22A shows a case where a function of displaying characters such as liquid crystal on the panel 21 is added, and FIG.

  FIG. 23 is a diagram showing a disk loading device according to the first embodiment, immediately after a medium is loaded in the holder 100, a shutter opening / closing unit of the cartridge provided in the holder 100 and its position detecting unit, and a bare disk holding unit and its posture detecting unit. 5 shows an example in which the type and storage state of the medium determined by the above are displayed on an external output.

  The information is displayed on an external monitor via the personal computer 35 from the disc loading device.

  FIG. 24 shows that in the cartridge 300 used in the disc loading device of the first embodiment, a gap is provided in a portion 300g overlapping with the cartridge 300 when the shutter 300a is opened.

  FIG. 24A is a plan view showing a case where the cartridge 300 is opened on one side, and a gap 300g is provided on both sides. When the cartridge 300 is open on both sides, a gap 300g is provided on the opposite side to the center line AA. FIG. 24B is a sectional view of the cartridge 300 taken along the center line AA, and FIG. 24C is a partially enlarged view thereof. A protrusion 300d for receiving the disk 300e is provided on the inner peripheral side of the cartridge 300, and is a position where the cartridge 300 and the disk 300e are closest. If this portion is deformed by the influence of the warp or the like of the shutter 300a, the disc 300e and the cartridge 300 come into contact with each other, causing a problem such as dusting and the like, leading to a malfunction.

  By providing a gap 300g in the cartridge 300 as shown in FIG. 24C, the influence of the ring 300h from the shutter 300a can be eliminated.

  In the present embodiment, the gap 300g is provided outside the cartridge 300. However, it is apparent that the same effect can be expected even if the gap 300g is provided inside the shutter 300a.

  INDUSTRIAL APPLICABILITY The disk loading device of the present invention can prevent insertion of a cartridge upside down and / or back and forth, so that it can be applied to a recording / reproducing device that improves the recording / reproducing characteristics of a recordable optical recording medium.

FIG. 1 is an exploded perspective view showing a configuration of a disc loading device according to a first embodiment of the present invention. FIG. 2 is a plan view showing the internal configuration of the disk loading device according to the first embodiment of the present invention. Perspective view of cartridge and bare disk Exploded perspective view showing the internal configuration of holder 100. A perspective perspective view of the assembled state of the holder 100. Configuration diagram of clamper Base part configuration diagram Block diagram of disk loading mechanism Switch wiring diagram Media discrimination diagram stored in the holder at the time of ejection Appearance perspective view showing how media is inserted Plane perspective view of loading operation Plane perspective view of loading operation Plane perspective view of loading operation Detailed top perspective view of loading operation Detailed top perspective view of loading operation Detailed perspective view of the lower part of the loading operation Detailed perspective view of the lower part of the loading operation Side sectional view of loading operation Top view when cartridge is inserted into holder Top view when cartridge is inserted into holder FIG. 2 is a front view showing the configuration of a disk loading device according to a second embodiment of the present invention. 3 is a front view showing a configuration of a disk loading device according to a third embodiment of the present invention. Top view and cross-sectional side view of a cartridge used in a disc loading device according to a fourth embodiment of the present invention. FIG. 2 is a perspective view of a disc loading mechanism according to a first conventional example. Side view of the disc loading mechanism Schematic diagram showing the dimensional relationship in the thickness direction of the same disk loading mechanism Perspective view of a disc loading mechanism of Conventional Example 2. Side view of the same section

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Drive housing 2 Turntable integrated disk motor 3 Chassis 4 Head transfer lever 5 Feed motor 6 Guide shaft 7 Optical head 8 Base 9 Damper 10 Elevating cam 11 Torsion leaf 12 Clutch 13 Drive side slide lever 14 Forced eject lever 15 Forced eject Spring 16 Positioning pin 17 Switch circuit board support 18 Cartridge detection circuit board 19 Follower slide switch 20 Circuit board 21 Panel 22 Shutter 23 Drive detection circuit board 24 Eject pin 25 Top plate 26 Clamp 27 Clamp lever 28 Clamp pressing spring 29 Disc regulating member Reference Signs List 30 laser drive circuit 31 reproduction signal processing circuit 32 modulation / demodulation circuit 33 RAM
34 Central Processing Unit (MPU)
35 Personal Computer (PC)
36 Stopper 100 Holder 101 Holder case 102 Holder cover 103 Shutter opener 104 Disk holder 105 Holder leaf spring 107 Entrance lever 108 Connecting plate 109 Holder lock 111 Loading motor 112 Drive gear train 113 Flexible 114 Switch 115 Switch 300 Cartridge 301 Large disc

Claims (2)

An apparatus for handling a recording / reproducing disc, comprising: a holder for holding a cartridge storing the recording / reproducing disc; shutter opening / closing means for the cartridge provided inside the holder; and regulating means provided for the holder. A disc loading device for preventing the cartridge from being mounted in a direction other than a normal direction when the cartridge is mounted on the disc loading device. 2. The disc loading device according to claim 1, wherein the restricting means does not come into contact with the cartridge and the shatter only when the shutter of the cartridge storing the recording / reproducing disc is open.

Images