JP5625439B2 - Disk transport device - Google Patents

Description

  The present invention relates to a disk device, in particular, a slot for loading a disk-shaped recording medium (hereinafter referred to as a disk) such as a CD (compact disk) or a DVD (digital versatile disk) into the disk device without using a tray. The present invention relates to a disk transport device having an in-type loading mechanism.

  Conventionally, a disk transport device having such a slot-in type loading mechanism is a mechanism for loading a disk into the disk device without using a tray, and the disk inserted in the housing of the disk device is elastically directly by a rubber roller. In this state, the rubber roller is rotated so that the disk is loaded, the entire disk is pulled into the housing, and is mounted at the disk recording / reproducing position. Since the disc is sandwiched and transported in this way, the disc can be loaded regardless of the posture of the apparatus, so that it is an optimum loading mechanism for products placed vertically or layout-free.

  In this slot-in type loading mechanism, a system is adopted in which a rubber roller for transporting a disk is usually brought into contact with the vicinity of the outer peripheral edge of the disk so that the recording surface of the disk is hardly damaged. . There are two types of methods. One is to convey both sides of the disc while being sandwiched by long rollers, and the rollers are composed of rubber rollers that are inclined so that the outer diameter is large in the longitudinal direction and the central outer diameter is small. In this configuration, both sides of the disk are sandwiched, but the portion of the disk that contacts the roller is limited to the vicinity of the outer peripheral edge, and has been widely used in the past (see, for example, Patent Document 1). The other is a configuration in which the disc is sandwiched in the radial direction of the disc by a roller that guides the outer peripheral edge of the disc, and the disc itself is conveyed by rotating the roller. The roller is a peripheral portion of the disc. It is the structure which contacts only (for example, refer patent document 2).

  In a disk transport device having such a slot inloading mechanism, a disk is directly inserted into an insertion port provided in the housing, the disk insertion is detected, a rubber roller is rotated by the detection, and the disk is further inserted. The disk is loaded by bringing the disk into contact with the rotated rubber roller and carrying it in. In general, the insertion slot is always in a state in which the disc can be inserted except when the disc is in the apparatus so that the user can easily use it. Therefore, a dustproof sheet is provided to prevent entry of dust and the like from the insertion port. The dustproof sheet is made of an elastic material, and a slit slightly larger than the disc diameter is formed so that the disc can be inserted. In other words, the insertion opening is normally closed by this dustproof sheet, but when the disc is inserted from the slit, the dustproof sheet is elastically deformed by being pushed by the disc and the disc can be inserted. The disc is elastically restored to its original state after passing.

  When paying attention to this dustproof sheet, there are the following problems. In other words, since the dustproof sheet comes into contact with the disc, it is necessary to reduce the elastic force of the dustproof sheet so that the dustproof sheet and the dust attached to the disc do not damage the disc. There is a problem that the dust-proofing cannot be performed sufficiently. In addition, in the case of a product used in a vertical position, the dustproof sheet is expected to have a function of holding the ejected disc, so that there is a problem that the function cannot be performed if the elastic force is too small.

  With regard to the structure of such a dustproof sheet, various proposals have conventionally been made regarding the adjustment of the elastic force, the adjustment of the holding force, the prevention of scratches on the recording surface of the disk, etc. while maintaining the dustproof function as follows. ing.

  First, in Patent Document 3, in a disk drive device provided with a disk insertion opening opened on one end face of a housing and having a dustproof sheet larger than the opening so as to shield the disk insertion opening, the dustproof sheet is the disk. A dust-proof device for a disk drive device, wherein a notch is formed at a position other than the region facing the opening of the insertion slot, and the elastic force of the dust-proof sheet is adjusted by changing the density and area of the notch. A mechanism is disclosed.

  In Patent Document 4, a slit (displacement part) is formed in a dustproof sheet provided in an opening for inserting / extracting a disk so that the displacement is facilitated when the disk is displaced by the disk. A disk device characterized by adjusting the elastic force is disclosed.

  Further, in Patent Document 5, in a disk device having a gate through which a disk enters and exits the device, a first felt having a single slit and a plurality of intersecting slits formed on the gate, and a first felt. It is possible to improve the dustproofness and adjust the holding force of the disk by providing the second felt which has a weaker elasticity than the felt and has at least one slit formed and fixed to the back surface of the first felt. A gate structure in a slot-in type disk device is disclosed.

  Further, Patent Document 6 discloses a disc insertion slot structure which is formed in a shape bent in a direction in which a central portion is separated from a signal recording surface of a disc into which a dustproof sheet is inserted, and which does not damage the recording surface of the disc with the sheet. A disc insertion slot structure for a disc device is disclosed.

  Here, each of the above-described two slot-in type loading mechanisms will be described in relation to the configuration of the dustproof sheet.

  First, in the case of a slot-in loading mechanism that conveys a disc in the direction of the disc surface, consideration is given to sandwiching the end surface of the disc with an inclined rubber roller, but due to the gentle inclination and deformation of the rubber, The rubber roller comes into contact with the recorded part of the disc. The dustproof sheet is elastically in contact with the disc, so it is made of felt or the like made of soft fibers that are hard to damage the disc. To metastasize. Since the dust transferred to the disk is pressed against the disk with a rubber roller, there is a problem that the disk is damaged. Since the rubber roller contacts in the vicinity of the outer periphery of the disk, the transfer of dust adhering to the vicinity of the end of the dustproof sheet to the disk causes a scratch on the disk. In some recent discs, management information may be recorded on the outer peripheral portion, and if this portion is damaged, recording / reproduction may not be possible.

  The scratching of the disk due to the transfer of dust attached to the dustproof sheet can be solved even if the elastic force of the dustproof sheet is adjusted using the configurations in Patent Documents 3 to 5, since the transfer of dust to the disk occurs. Can not. Further, when the dustproof sheet is configured as described in Patent Document 6, dust transfer to the disk can be prevented, but the dustproof sheet having this structure cannot be expected to have a function of holding the disk at all and is not discharged. The disc was tilted toward the recording surface with a dustproof sheet.

  Next, in the case of a slot-in loading mechanism in which the disk is rotated while the disk itself is rotated by sandwiching the disk in the radial direction of the disk by a roller that guides the outer peripheral edge of the disk and rotating the roller, the rubber roller is Since the contact area is small, it is difficult to obtain a conveying force, and the surface pressure is high, so it is easy to wear. The rubber roller used therein is generally made of a material that has improved durability by mixing carbon black into ethylene propylene diene (hereinafter referred to as EPDM) rubber or the like that provides a gripping force. However, even if it is durable, it does not mean that it cannot be scraped at all. By contacting the outer peripheral edge of a hard polycarbonate disc, the rubber roller is scraped and adheres to the vicinity of the outer peripheral end surface of the disc. At this stage, there is no problem in performance, but the scraped rubber residue is transferred to the dustproof sheet when passing through the dustproof sheet. Since the rubber roller is in contact with the outer peripheral edge of the disk, the rubber residue spreads and transfers to the vicinity of the end of the dust-proof sheet through which the outer peripheral portion in contact with the rubber roller passes. When the disk passes again through the dust-proof sheet with the rubber roller residue, the rubber roller residue is transferred to the disk. At this time, the residue of the rubber roller contacts not only the outer peripheral end surface of the disc but also the recording surface near the outer periphery, and therefore spreads over the recording surface near the outer periphery of the disc and adheres to cloud the recording surface. The residue of the rubber roller is often a small particle, and this particle is a particle in which carbon black adheres to the disk with EPDM. For this reason, it is difficult to dissolve and remove it with a general solvent such as alcohol.

  In particular, when the rubber roller is driven on one side, the disc is conveyed while rotating and dirt is attached along the pits of the disc, so that the recording / reproducing performance is further deteriorated. Further, since the rubber roller comes into contact with the end surface of the outer peripheral edge of the disc, the disc recording surface is often contaminated near the outer periphery of the disc. In recent years, management information may be recorded on the outer peripheral portion of the disc, and if this portion is damaged, playback may not be possible.

  Further, in the case of a slot-in loading mechanism in which the outer peripheral edge of the disk is pressed in the radial direction of the disk to convey the disk, the outer peripheral edge of the disk is held while being sandwiched between rollers. Increasing the discharge amount makes it difficult to hold the disc, and it becomes necessary to hold the disc using the elastic force of the dustproof sheet. Therefore, it is necessary to increase the disc holding force by the dustproof sheet by adopting the configuration described in Patent Document 5 or by increasing the thickness of the material of the dustproof sheet. However, increasing the holding force of the disk means increasing the pressing force of the dustproof sheet against the disk, and the residue of the rubber roller is more strongly pressed against the disk. Therefore, there has been a problem that a stronger and more residue is attached to the disk.

  That is, even in the case of a slot-in loading mechanism in which the outer peripheral edge of the disc is pressed in the radial direction of the disc and the disc is conveyed, the contamination of the disc due to the transfer of the rubber roller residue adhered to the dustproof sheet is disclosed in Patent Documents 3 to 5. Even if the elastic force of the dustproof sheet is adjusted by using the configuration in (4), since the transfer of dust to the disk occurs, it is not easy to solve it. Further, if a dustproof sheet is configured as described in Patent Document 6, transfer of dust to the disk can be prevented, but the function of holding the disk cannot be expected at all, and the ejected disk is recorded with the dustproof sheet. There was a problem of tilting to the surface side.

Japanese Patent Application Laid-Open No. 07-50057 JP 2009-64518 A JP 2003-249068 A Japanese Patent Application Laid-Open No. 2000-113659 JP 2005-285266 A JP 2003-317353 A

  As described above, in any of the conventional slot-in type disk transport devices, the disk is stably held with respect to dust adhering to the dustproof sheet in the vicinity of the outer peripheral edge of the disk while maintaining the disk stably. There was a problem that it was not possible to prevent contamination.

  Therefore, the present invention solves the above-described problem, and has a function of holding a disc in a state in which a certain amount is ejected from the device main body by a dustproof sheet in a disc transport device that transports the disc while holding the outer peripheral edge of the disc. The present invention has been made for the purpose of providing a disk transport device that prevents the occurrence of scratches and dirt that occur near the outer periphery of the disk, which affects recording and reproduction of the disk.

  In order to achieve the above object, a disk transport apparatus of the present invention is a slot-in type desk transport apparatus in which a disk is directly inserted and transported to a reproducible position for inserting / ejecting the disk. A dust insertion sheet made of an elastic material having a disk insertion opening opened in the housing, a slit for closing the disk insertion opening and inserting the disk, and a roller in contact with the outer periphery of the inserted disk And a conveying means for conveying the disk by transmitting a driving force to the roller, and a driving means for transmitting the driving force to the roller, and the slit of the dustproof sheet has a length of the disk. The slit is formed longer than the diameter, and the vicinity of the center thereof is substantially coincident with the transporting track of the disk, and at least one end side of the slit is the center. It has a structure which is biased formed so as to be positioned on the recording surface side in the thickness direction of the disc with respect to parts near.

  As a result, the dustproof sheet functions to hold the disc in a state in which a certain amount is ejected from the apparatus main body near the center of the dustproof sheet, and the dustproof sheet does not contact or contact the recording surface side of the disc on the end side of the disc. By adopting a low pressure configuration, it is possible to reduce the transfer of adhering debris generated near the outer periphery of the disc to the dust-proof sheet, and there is no risk of dragging the recording surface with dust attached to the dust-proof sheet, and recording and playback of the disc Thus, it is possible to obtain a disk transport device that can prevent the occurrence of scratches and dirt that occur near the outer periphery of the disk.

  According to the above configuration, the dust-proof sheet holds the disc that has been ejected from the apparatus main body by a certain amount, and prevents the occurrence of scratches and dirt that occur near the outer periphery of the disc that affects recording and reproduction of the disc. A conveyance device can be provided.

FIG. 1 is an external perspective view showing a disk device main body of a disk conveying device according to a first embodiment and a disk inserted into the disk device main body. Disassembled perspective view showing parts constituting the entire disk device as a unit Front view of the dust cover (A) Cross-sectional view showing the structure near the center of the dustproof cover, (b) Cross-sectional view showing the structure near the end of the dustproof cover Side view immediately after insertion of the disk with both housings removed Side view in the middle of transporting the disc in the same state Side view of intermediate stage of disc ejection in the same state Side view of the disc ejection completion stage in the same state Top view of the roller arm and link arm (A) Bottom view of the roller base including the roller base and link arm in a closed state, (b) Bottom view of the roller arm in an opened state Explanatory drawing of the disk that contacts the roller Sectional drawing which shows the structure of the edge part vicinity of the dustproof cover 3 Sectional view of the vicinity of the end when the disc is inserted Cross section around the center when the disc is ejected Sectional view of the vicinity of the end when the disc is ejected Front view of the dustproof cover of the disk transport device according to the second embodiment Sectional drawing of the roller part of the disc conveying apparatus concerning Embodiment 3. FIG. (A) A cross-sectional view showing a state in which a disk held between the rollers is conveyed, (b) a cross-sectional view showing a state in which the disk held between the rollers is further conveyed The side view of the disk discharge completion stage in the state which removed the both housing | casing of the disk conveying apparatus concerning Embodiment 4

(Embodiment 1)
Hereinafter, a first embodiment of a disk transport apparatus according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an external perspective view showing a disk device main body having a disk conveying device of the present invention and a disk inserted therein, and FIG. 2 is an exploded perspective view showing parts constituting the entire disk device as a unit. Here, FIG. 1 shows an example of a vertical arrangement, and FIG. 2 is an exploded perspective view of a horizontal (horizontal) arrangement, but the apparatus itself can be adapted to either a vertical or horizontal arrangement. Are described with expressions such as “left and right”, “up and down”, and “up and down” for convenience.

  In FIG. 1, reference numeral 1 denotes a first casing as an upper cover constituting the apparatus main body, and 2 denotes a second casing as the lower cover. Is provided with a disc insertion opening 1 a, and the opening 1 a is closed by a dust cover 3. The dust-proof cover 3 is made of an elastic material sheet such as felt, and has a slit for inserting and passing the disk 100 as will be described later.

  As shown in FIG. 1, by directly inserting the disc 100 while elastically deforming the dustproof cover 3 in the opening 1a, the disc 100 can be recorded and reproduced by the action of the disc conveying device configured therein. It is conveyed to a predetermined position. Here, the illustrated disk 100 is a 12 cm disk which is a large diameter disk.

  As shown in FIG. 2, the disk device as a whole is configured with mechanical parts related to the disk transport device in the casings 1 and 2 described above. An upper guide 4 that guides the upper side of the disk 100 and a guide portion 5a of the roller base 5 that guides the lower side are provided at a position of the opening 1a facing the inside of the dustproof cover 3. The roller base 5 rotatably holds a pair of roller arms 7a and 7b having rubber rollers 6a to 6d serving as a guide and driving force transmission means for conveying the inserted disc 100 into the apparatus. The pair of rubber rollers 6a and 6b on the right side are rotatably provided on the roller arm 7a, and the pair of rubber rollers 6c and 6d on the left side are fixed to the roller arm 7b. The driving force of the motor 9 as the driving source is applied to the roller gears 6e and 6f provided integrally with the rotatable rubber rollers 6a and 6b via the gear train 8 including the gears 8a to 8c provided on the roller arm 7a. Communicated. The driving force is transmitted from the gear 10a to the gear 8c via the gear train 10 including the worm gear 9a and the gears 10a to 10e. The transmission is transmitted to the gears 10b and 10c by the rotation of the clutch plate 11. Is switched by disconnecting the mesh. At that time, the driving force of the motor 9 is transmitted only from the gears 10d to 10f, and drives the slide cam 16 described later. Such a conveying device is configured to be held in the mechanical chassis 12 so as to be rotatable as necessary.

  As shown in FIG. 2, the disk device includes a traverse 15 that has a spindle motor 13 and an optical pickup 14 that integrally form a turntable on which the disk is placed, and records and reproduces data on the disk. . In order to move up and down the traverse 15, a slide cam 16 slidably provided on the right side of the mechanical chassis 9 is connected to a mechanical mechanism via a link arm 17 rotatably supported on the lower portion of the mechanical chassis 9. The slide cam 18 is slidably provided on the left side of the chassis 9 so that the slide cam 16 and the slide cam 18 slide in synchronization. The slide cams 16 and 18 are provided with lift cams that engage with an intermediate chassis 19 that is rotatably provided on the mechanical chassis 9. The slide cams 16 and 18 slide to move the intermediate chassis 19. It is configured to rotate in the vertical direction.

  A traverse 15 is fixed to the front side of the intermediate chassis 19 via floating rubbers 20a and 20b. The traverse 15 is fixed to the mechanical chassis 9 via floating rubbers 20c and 20d. Has been. With this configuration, the traverse 15 rotates in accordance with the vertical movement of the intermediate chassis 19 by the slide cams 16, 18, and the spindle motor 13 can be moved up and down accordingly. .

  In addition, a clamper 21 that clamps the disk 100 to the spindle motor 13 is provided at an upper portion facing the spindle motor 13. The spindle motor 13 is provided with a magnet, and the clamper 21 is pulled by the spindle motor 13 by a magnetic force by an iron yoke 21a provided on the clamper 21 so as to sandwich the disk 100. The clamper 21 is provided so as to be attached / detached from the opening 22a of the upper base 22 formed so as to cover the upper part of the traverse 15 so as to face the spindle motor 13 and move the left and right clamper lifters 23a, 23b. The attachment / detachment is performed.

  On the upper base 22, a centering member 24 for centering the disc 100 (and an 8 cm disc which is a small-diameter disc) and a trigger lever 25 for detecting the conveyance of the disc and switching to the up / down operation of the traverse 15 are slid / It is provided rotatably. Further, a guide lever 26 for holding the inserted disc 100 (and an 8 cm disc, which is a small-diameter disc) stably between the spindle motor 13 and the clamper 21 is rotated on the upper base 22. It is held freely. Here, the upper base 22 is fixed to the mechanical chassis 9, and the mechanical chassis 9 is sandwiched and fixed between the housings 1 and 2.

  In FIG. 2, 27a is a detection switch for detecting when the disk 100 is inserted into the disk insertion opening 1a, and 27b is a detection switch for detecting the end of loading when the disk is ejected. It is provided on the substrate 27 at the opposite position. Reference numerals 28a and 28b denote link arms rotatably provided on the roller base 5. The roller arms 7a and 7b are provided on the roller base 5 so as to rotate synchronously.

  The overall configuration of the disk device has been described with reference to FIG. 2, but the configuration of the transport device portion will be described in detail below.

  First, details of the dust cover 3 will be described with reference to FIGS. 3 and 4A and 4B. 3 is a front view showing the slits 3f to 3x of the dust cover 3 and the structure thereof, FIG. 4 (a) is a cross-sectional view showing the structure near the center of the dust cover 3, and FIG. 3 (b) is the dust cover 3. It is sectional drawing which shows the structure of the edge part vicinity.

  The dustproof cover 3 is provided so as to close the opening of the opening 1a of the upper cover 1, and is felt as a dustproof sheet having slits 3f to 3n that are elastically deformed to allow insertion / ejection of the disk 100 and to prevent dust. 3a, a reinforcing sheet 3c having an opening 3b provided to increase the holding force of the discharge disk at the same time that the dustproof cover 3 is firm, a double-sided tape 3d to be attached to the inside of the upper cover 1, and a felt It is comprised from the double-sided tape 3e which adhere | attaches 3a and the reinforcement sheet 3c.

  The opening 3b of the reinforcing sheet 3c is a drum-shaped opening that is smaller than the opening 1a of the upper cover 1, has a large central portion, and has a small end, and the opening width of the end portion depends on the thickness of the disc 100 and the felt 3a. The width is set to a width obtained by adding a dimensional tolerance to the width obtained by adding the thickness. The reinforcing sheet 3c is provided by the opening 3b so as to suppress deformation of the felt 3a when the disk 100 is discharged. Further, since the reinforcing sheet 3c can be seen from the outside of the apparatus, a black resin sheet having a matte surface is used. Here, a black resin sheet with a matte surface is used, but a transparent sheet may be used because it has the same color as the felt 3a.

  The double-sided tape 3d is provided outside the opening 1a of the upper cover 1, and is provided so that the double-sided tape 3d does not protrude from the front surface after being attached to the upper cover 1 of the dust cover 3. The double-sided tape 3e is provided outside the opening 3b of the reinforcing sheet 3c so as not to inhibit the deformation of the felt 3a when the disc 100 is inserted. Here, the double-sided tapes 3d and 3e are not limited to double-sided tapes and may be adhesives.

  The felt 3a has a slit 3f in the central portion provided in the width direction at the same height position corresponding to the transport track in the thickness direction of the disk 100 guided by the rubber rollers 6a to 6d, and a height position of the disk transport track. Slits 3g and 3h at both ends provided at a height position shifted to the recording surface side of the disk 100 (that is, the lower side in the figure) by half of the maximum thickness (here, 0.75) of the disk 100, and slits 3f and slit Slits 3i and 3j that gently connect 3g and 3h, vertical slits 3k and 3L provided at positions on both sides that are separated from the center by dimension “A1”, and positions on both sides that are separated from the center by dimension “A2” The vertical slits 3m and 3n are provided, and the felt 3a is elastically deformed by the slits 3f to 3n so that the disc 100 can pass therethrough. It has been made. Here, the actual dimensions of “A1” and “A2” are as follows: “A1” is slightly outside the radius (about 4 cm) of the small diameter (8 cm) disk, and “A2” is the radius of the large diameter (12 cm) disk. It is slightly outside the position (about 6 cm). The difference dimension “A2−A1” is scraped when rubber rollers 6a and 6b, which will be described later, come into contact with the disk 100, and the scraped rubber residue remains as an adhering residue 30. The disk 100 with which the rubber rollers 6a and 6b come into contact. This also corresponds to a position in the vicinity of the outer peripheral end face.

  Further, the felt 3a has an outer periphery from the opening 3b of the reinforcing plate 3c, an inner periphery from the double-sided tape 3e, and a slit for adjusting the elastic force of the felt 3 at a position between the longitudinal slits 3k and 3L. 3o to 3v are provided substantially in parallel at the four upper and lower portions and at the edge of the opening 3b. Similarly, the outer side of the opening 3b of the reinforcing plate 3c, the inner periphery of the double-sided tape 3e, and the outer side of the longitudinal slits 3k and 3L in the left-right direction, opposite to the recording surface of the disc 100 provided with the slits 3g and 3h. On the side position, slits 3w and 3x for reducing the elastic force of the felt 3a are provided substantially parallel to the edge of the opening 3b. Further, the dust cover 3 is provided with holes 3y and 3z for engaging with a positioning boss (not shown) of the upper cover 1, whereby the dust cover 3 is positioned on the casing constituting the apparatus main body. ing.

  Next, the conveyance of the disk will be described with reference to FIGS. 5 to 8. In this figure, the two bases 1 and 2 and the upper base 22 including the upper guide 4 are excluded in order to show the disk conveyance state. It is a side view of a state, and in these figures, for the sake of convenience, the dust cover 3 configured in the housing 1 is displayed by line drawing.

  FIG. 5 shows a state immediately after inserting a large-diameter disk (12 cm disk) 100. At this time, the disk 100 is in contact with the pair of right rubber rollers 6a and 6b and the pair of left rubber rollers 6c and 6d. The disc detection lever 29 (see FIG. 9 for details) provided on the arm 7b is rotated by the disc 100, and the insertion of the disc 100 is detected by operating the detection switch 27a. In this state, the motor 9 starts operating by the operation of the detection switch 27a, and the rubber rollers 6a and 6b are driven via the gear train 10 and the gear train 8, and the rubber rollers 6a and 6b as the drive rollers are driven. Is rotated in the direction of the arrow A, and the rotational driving force and frictional force of one rubber roller 6b and the frictional force of one rubber roller 6d of the other non-rotating rubber rollers 6c and 6d, The disc 100 is rotated in the direction indicated by the arrow B, with the abutting portion of the disc being the center of rotation.

  The disk 100 is transported in the direction of arrow A by the rotation of the rubber roller 6b in the direction of the arrow B around the rubber roller 6d, and the disk 100 pushes the space between the rubber rollers 6b and 6d by the movement by the transport. Therefore, the pair of roller arms 7a and 7b biased in the closing direction rotate in the directions indicated by arrows C and D, that is, in the opening direction. As described above, when the roller arms 7a and 7b are opened, the rubber rollers 6a and 6c are once separated from the peripheral edge of the disk 100 but are brought into contact with each other in the state shown in FIG.

  FIG. 6 shows a state in which all of the rubber rollers 6a, 6b, 6c and 6d are in contact with the disk 100. The rubber rollers 6a, 6b, 6c and 6d are transported from the disk position 100A immediately after insertion in FIG. In this process, the disk position 100B shown in FIG. 6 is a position where the rotational driving of the disk 100 is switched from the driving by the rubber rollers 6b and 6d to the driving by the rubber rollers 6a and 6c. From this position to the disk position 100C, the disk 100 is now conveyed while rotating in the direction of the arrow B around the position of the contact portion with the rubber roller 6c by the rotational driving force of the rubber roller 6a. .

  5 to 6, the disc 100 is transported while being held in the thickness direction by the guide lever 26 shown in FIG. 2, the position in the left-right direction is determined by the centering member 24, and the trigger lever 25 is moved. Thus, the transport completion position of the disk 100, that is, the disk position 100C is detected. At the disk position 100C, the transmission of the driving force by the motor 9 is switched from the conveyance driving of the disk 100 to the driving of the slide cams 16 and 18 by the action of the trigger lever 25. Then, as explained in FIG. 2, when the slide cams 16 and 18 slide, the intermediate chassis 19 is rotated in the vertical direction, the traverse 15 is rotated, and the spindle motor 13 portion is increased accordingly. In addition to the operation, the disc 100 is clamped by the clamper 21 so that the disc 100 can be reproduced. Here, detailed description thereof is omitted.

  Next, when the disc 100 is ejected will be described with reference to FIGS. With the disc 100 in the disc position 100C, the clamped state is released and the traverse 15 is turned to perform a down operation so that the disc 100 can be ejected, and the ejection and conveyance are started by driving with the rubber rollers 6a and 6c. At this time, a driving force opposite to that during insertion and conveyance is transmitted to the rubber rollers 6a and 6b by the motor 9, and the disk 100 is conveyed while being rotated in the direction of the arrow by the driving force in the direction of arrow E. . From the disk position 100C to the disk position 100B shown by the solid line in FIG. 7, the disk 100 is conveyed while rotating in the direction of the arrow about the position of the contact portion with the rubber roller 6c by the rotational driving force of the rubber roller 6a. All of the rubber rollers 6a, 6b, 6c and 6d are in contact with the disk 100. From the state shown in FIG. 7 to FIG. 8, it is similarly conveyed by driving by the rubber rollers 6b and 6d.

  FIG. 8 is substantially the same position as the carry-in position of FIG. 5, but is a state in which the end of loading is detected by the detection switch 27b when the disk described in FIG. 2 is ejected, and the driving of the rubber roller 6b by the motor 9 is stopped. . The state shown in FIG. 8 is a state in which the disc 100 can be taken out by the user's finger during unloading. In this state, the disc 100 is clamped based on the urging forces of the roller arms 7a and 7b acting on the rubber rollers 6a to 6d. In addition, the rubber rollers 6a to 6d themselves are held without jumping out due to the frictional force of the rubber rollers 6a to 6d themselves and the frictional force due to the elasticity of the dustproof cover 3.

  Here, the roller arms 7a and 7b will be described with reference to FIGS. 9 and 10. FIG. 9 is a top view of only the roller arms 7a and 7b and the link arms 28a and 28b, and FIG. FIG. 9 and FIG. 10 show a state where the left and right sides are reversed. The roller arms 7a and 7b are provided to rotate relative to the roller base 5 around the rotation centers 7a-1 and 7b-1 by the link arms 28a and 28b. The rubber rollers 6a to 6d can be brought into contact with the disk 100 shown in FIG. For this reason, the roller arms 7a and 7b are provided with torsion coil springs 7a-2 for urging in the directions opposite to the direction of the arrow C and the direction of the arrow D which are expanded by the disk 100, that is, the arrow G direction and the arrow H direction. 7b-2 is provided. With this urging force, the disk 100 is sandwiched between the rubber rollers 6a, 6b and 6c, 6d, and can be conveyed while always contacting with a constant pressing force.

  Thus, when carrying the disk 100, the rubber rollers 6a, 6b and 6c, 6d are always brought into contact with a constant pressing force by the urging force of the coil springs 7a-2 and 7b-2. For this reason, as described in the conventional example, the rubber rollers 6a and 6b as the driving rollers that rotate in particular are scraped and contacted with the vicinity of the outer peripheral end surface of the disk as shown in FIG. Will be. As shown in FIGS. 6 to 8, the scraped rubber residue remains as an adhering residue 30 at a position in the vicinity of the outer peripheral end surface of the disk 100 with which the rubber rollers 6a and 6b abut. Although the position of the adhering residue 30 is the peripheral edge of the disc 100, when the disc 100 is ejected, the disc 100 at the time of ejection rotates in the direction of the arrow about the rubber roller 6d. As shown in FIG. 8, the adhering residue 30 corresponds to a position 30 a that spreads in a certain width near the end of the dustproof sheet through which the outer peripheral portion of the disk 100 passes.

  As described above, in the disk transport device according to the first embodiment, the adhering residue 30 is generated at a position near the outer peripheral end surface of the disc 100 with which the rubber rollers 6a and 6b abut. In order to prevent the transfer and prevent the occurrence of scratches and dirt, the dustproof cover 3 is configured as described above with reference to FIGS. 3 and 4. Hereinafter, the function of the dustproof cover 3 will be described. Will be described with reference to FIGS.

  12 to 15 are a cross-sectional view of a portion of the dust-proof cover 3 when the disc 100 is carried in, and a cross-sectional view of a portion of the dust-proof cover 3 when the disc 100 is carried out. 11 will be described below with reference to FIG.

  FIG. 12 shows a cross-sectional view of the vicinity of the central portion of the dust-proof cover 3 when the disk 100 is inserted and transported in the loading direction (positions where the slits 3o to 3v are formed). FIG. Sectional drawing of the edge part vicinity (position which formed the slits 3w and 3x) of the dust-proof cover 3 at the time of conveyance to a direction is shown.

  When the disc 100 is inserted through the opening 1a and the disc 100 is pushed into the slit 3f, the upper and lower felts 3a of the slit 3f are elastically tilted to the inside of the apparatus. Due to the elastic restoring force of the felt 3a, the disk 100 receives a frictional force from the felt 3a and becomes a conveying load of the disk 100. When the apparatus is near the end of its life and the rubber rollers 6a to 6d are worn and the frictional force is reduced to reduce the conveying force of the disk 100, the surface of the disk 100 is dirty and slippery and it is difficult to obtain the conveying force, or in a low temperature state. When the rubber hardness is increased and the conveying force is reduced, the disc 100 cannot be loaded when the conveying load is large. Therefore, it is necessary to adjust the restoring force to such an extent that the dust-proof function is satisfactory and does not hinder the conveyance. In the embodiment of the present invention, an appropriate restoring force of the felt 3a is obtained by providing the slits 3o to 3v with an appropriate length. As shown in FIG. 12, in the portion where the slits 3o to 3v are formed, the root at which the felt 3a is deformed is cut by the slits 3o to 3v, so that no restoring force is generated. Therefore, it is possible to adjust the restoring force by adjusting the ratio of the portions that form the slits 3o to 3v and the other portions.

  Further, the slit 3f is a central portion in the radial direction of the disk 100 and substantially coincides with the transport track in the thickness direction thereof, so that the inserted disk 100 is held on the transport track by the restoring force of the felt 3a.

When the disc 100 is further inserted and pulled, the outer periphery of the disc 100 passes through the slits 3 h and 3 g of the dust cover 3. FIG. 13 shows a cross section near the outer periphery of the disk 100 at this time. At this time, the disk 100 is held by the rubber rollers 6a, 6b, 6c and 6d, and most of the dustproof cover 3 is sandwiched between the slits 3f, so the disk 100 is on the transport track. . For this reason, the felt 3a of the slits 3h and 3g shifted by 0.75 from the conveyance track to the recording surface side rides on the disk 100 on the side opposite to the recording surface of the disk 100, and the felt 3a on the recording surface side is the disk 100. There is a gap d between the recording surface and the recording surface. When the thickness of the disc 100 is “t = 1.2 mm”, the gap d is “d = 0.15 mm” at the design center, and the disc 100 has a non-standard “t = 1.5 mm” thickness. It is in the state of touching at last. Here, the end surface of the opening 3b of the reinforcing sheet 3c is close to the recording surface of the disk 100, but the shape of the opening 3b is a drum-shaped opening having a wide center, so even if it comes into contact, the outer periphery of the disk 100 Only the edge contacts, and the recording surface is not damaged. In this position
Further, since the felts 3a running on the upper surface of the disc 100 opposite to the recording surface are provided with slits 3w and 3x, the downward restoring force is small, and the force that pushes the disc 100 toward the recording surface side. Has been reduced. As a result, the disk 100 is more stably held on the transport track, and the recording surface of the disk 100 and the felt 3a can stably secure a gap or reduce the contact pressure.

  When the disk 100 is further transported and enters the inside of the apparatus, the disk 100 disappears from the dust cover 3 and returns to its original state by the elastic return force of the felt 3a, as shown in FIGS. 4 (a) and 4 (b). Return to the state.

  Next, the ejection operation for ejecting the disc 100 will be described. FIG. 14 shows a cross-sectional view of the vicinity of the center (the position where the slits 3o to 3v are formed) when the disc 100 is ejected and passes through the dust cover 3, and FIG. 15 is similarly when the disc 100 is ejected. Sectional drawing of the edge part vicinity (position which formed the slits 3w and 3x) of the dustproof cover 3 is shown.

  Since the slit 3f of the dust cover 3 is on the transport track of the disk 100, the felt 3a of the slit 3f through which the disk 100 passes is inclined evenly toward the outside of the apparatus. As described above, the felt 3a is provided with the slits 3o to 3v above and below the slit 3f, but since the edge of the opening 3b of the reinforcing sheet 3c is closer to the conveying track side than the slit, the slit 3o to 3v is bent. Without bending, it is bent outward near the opening 3b. For this reason, when the disc 100 is ejected, the felt 3a generates a high restoring force and presses the surface of the disc 100. As a result, the disk 100 receives a higher frictional force from the felt 3a, and the disk 100 is stably held on the transport track.

  Further, the disk 100 is discharged, and the outer periphery of the disk 100 passes through the slits 3h and 3g of the dust cover 3. FIG. 15 shows a cross section near the outer periphery of the disk 100 at this time. At this time, the disc 100 is held by the rubber rollers 6a, 6b, 6c and 6d, and most of the central portion in the width direction of the disc 100 is sandwiched between the slits 3f, so that the disc 100 is on the transport track. . For this reason, as in FIG. 13, the felt 3a of the slits 3h and 3g shifted by 0.75 from the conveyance track to the recording surface side rides on the disk 100 on the opposite side of the recording surface of the disk 100, The felt 3a has a gap d between it and the disc 100. When the thickness of the disc 100 is “t = 1.2 mm”, the gap d is “d = 0.15 mm” at the design center, and the disc 100 has a non-standard “t = 1.5 mm” thickness. It is in the state of touching at last. Further, as shown in FIG. 15, the felt 3a does not bend at the slits 3x and 3w but is bent at the edge portion of the opening 3b of the reinforcing sheet 3c, as in the slits 3o to 3v. Is applied to the disc 100, and the disc 100 is ejected and stably held by the frictional force.

  At this time, the disk 3 is strongly pressed by the felt 3a by the opening 3b. However, since the opening 3b has a drum shape, pressure concentrates on the end of the disk 100. Therefore, there is no influence on the recording surface of the disc 100.

  As described above, the rubber rollers 6a to 6d are scraped in contact with the end surface edge of the disc 100 and remain as adhering debris 30 at a position in the vicinity of the outer peripheral end surface of the disc 100 in the above-described transport operation for loading and unloading the disc 100. . As described above, since the disk 100 is fed while rotating around the rubber rollers 6c and 6d, the edge edge of the disk 100 with the scraped adhering debris 30 is the right outer peripheral end surface conveyed by the rubber rollers 6a and 6b. Since it passes through the slit of the dustproof cover 3 at the position 30a in the vicinity, the scraped adhering residue 30 comes into contact with the felt 3a mainly near the right end of the dustproof cover 3. However, in the vicinity of the end of the dustproof cover 3 where the scraped adhering residue 30 tends to adhere, the slit 3h of the felt 3a shifts to the recording surface side and does not contact the lower surface of the felt 3a. There is no transition of 30, and the attached residue 30 is transferred only on the upper side of the felt 3a.

  Thus, since the recording surface near the outer periphery of the disk 100 does not contact the felt 3a, the adhering residue 30 on the recording surface side of the disk 100 is not transferred to the felt 3a but transferred to the vicinity of the slit 3h of the felt 3a. Even if there is an adhering residue 30, it does not contact the recording surface. When the disc 100 is rotated and dragged by the felt 3a with the adhering debris 30 there is a scratch on the arc, the recording / reproducing function of the disc 100 is greatly reduced. Will not occur.

  As described above, since the slit 3f is on the transport track and the ejected disk 100 can be stably held by the restoring force due to the elasticity of the felt 3a, the ejection operation described above is performed even when the apparatus is placed vertically. The ejected disc 100 is not removed until the ejection is completed in FIG. At the same time, no transfer of dust such as adhering debris 30 from the felt 3a to the recording surface of the outer periphery of the disk occurs, and dust such as adhering debris 30 attached to the felt 3a may come into contact with the recording surface of the disc 100. Therefore, scratches and dirt on the recording surface of the disc 100 are reduced, and stable recording / reproduction of the disc 100 becomes possible.

  In the first embodiment of the present invention, both the slits 3g and 3h are lowered to the recording surface side, but only on the side where the rubber roller carrying the disk 100 is driven (that is, on the rubber rollers 6a and 6b side). Good. Further, although the slit 3w is provided, it may be provided only on the side where the slit for inserting the disk 100 is shifted, that is, if the slit 3g is not shifted to the recording surface side, the slit 3w may not be provided.

  In the first embodiment of the present invention, the slit 3f and the slits 3g and 3h are gently connected by the slits 3i and 3j. This makes it easy to form a Thomson blade for forming the slit.

  Further, when inserting and ejecting a small-diameter 8 cm disc 101, the disc 101 is held only by the rubber rollers 6a and 6c at the back of the apparatus without contacting the rubber rollers 6b and 6d. The proportion of the disc 101 that is held depends on the dust cover 3 increases. The dust cover 3 according to the first embodiment of the present invention is provided with vertical slits 3k and 3L at a position about 4 cm outside from the center. In the case of the small-diameter disk 101 of 8 cm, the slit 3f near the center falls outward when ejected, but since the longitudinal slits 3k and 3L are present, the outer slits 3i and 3j remain closed. Therefore, the disk 101 rides on the end face of the slits 3i and 3j (3j when the apparatus main body is placed vertically and the right side is down, and 3i when the left side is down) and is supported by the end face. Will not fall.

  Further, since the slit 3f holding the 8-cm disk 101 substantially coincides with the transport track of the disk 101, the discharged and held disk 101 is held in the correct posture on the transport track.

  In addition, the reinforcing sheet 3c of the first embodiment of the present invention is visible from the outside of the apparatus because the opening 3b is small, but it is noticeable by using a transparent or black matte material. It is possible to improve the quality.

  As described above, the disk reproducing apparatus of the present embodiment is a slot-in type desk conveying apparatus in which a disk is directly inserted and conveyed to a reproducible position for inserting / ejecting the disk. A dust insertion sheet made of an elastic material having a disk insertion opening opened in the housing, a slit for closing the disk insertion opening and inserting the disk, and a roller in contact with the outer periphery of the inserted disk And a conveying means for conveying the disk by transmitting a driving force to the roller, and a driving means for transmitting the driving force to the roller, and the slit of the dustproof sheet has a length of the disk. The slit is formed longer than the diameter, and the vicinity of the center thereof is substantially coincident with the transporting track of the disk, and at least one end side of the slit is the center. It is biased so that it is positioned on the recording surface side in the thickness direction of the disc with respect to the vicinity of the area, and there is no risk of dust or debris on the dustproof sheet adhering to the recording surface near the outer periphery of the disc. , It has the effect of being able to prevent dirt.

  Further, in the disk reproducing apparatus of the present embodiment, the roller that holds and transports the disk is a roller that is in contact with the outer peripheral edge of the disk and transports the disk while sandwiching the left and right of the disk. The disk itself is conveyed while being rotated by the rotational driving force of the roller, and particularly in the case of a large-diameter disk, the urging force of the sandwiching roller against the disk is large, so The drive roller itself is scraped off at a position near the outer peripheral end surface, and adhering debris is generated.Since the dust-proof sheet slit is biased toward the recording surface, the adhering debris does not transfer to the dust-proof sheet side during disk transport Thus, it is possible to prevent the adhering debris from being dragged by the dust-proof sheet and causing scratches on the recording surface of the disc.

  Further, the disk reproducing device of the present embodiment is provided with a reinforcing sheet made of an inelastic material formed so as to have an opening having an inner diameter smaller than the disk insertion port on the front surface of the dustproof sheet, and is opposed to the reinforcing sheet. The dust-proof sheet is provided with a slit parallel to the inner edge of the reinforcing sheet. When the disc is transported, it is transported while being contacted by the parallel slit with a weak return force of the dust-proof sheet. Sometimes the reinforcing sheet generates a high restoring force on the dustproof sheet and presses the disk surface, and the disk receives higher frictional force from the felt, so that the disk is stably held on the transport track. Have.

  Further, the disk reproducing apparatus of the present embodiment is such that an auxiliary slit is formed in the vicinity of the end of the dustproof sheet on the side opposite to the slit biased toward the recording surface side, and the disk posture is more stable. As a result, the recording surface becomes straight, and scratches and dirt on the recording surface can be reduced.

  Further, in the disk reproducing apparatus of the present embodiment, the slit of the dustproof sheet is formed so that the vicinity of the center and the vicinity of the end are gently connected, and a Thomson type for forming the slit is formed. In addition to being easy to do, it has the effect that it is possible to prevent uneven adhesion of dust to the disk due to contact of the corners of the end of the dustproof cover.

Further, in the disk reproducing apparatus of the present embodiment, the dustproof sheet is formed by forming a vertical slit slightly outside the radius of the small-diameter disk from the center of the slit, thereby further stabilizing the holding of the small-diameter disk. It has the effect of being able to.
(Embodiment 2)
Next, a second embodiment of the present invention will be described. The second embodiment of the present invention is different from the first embodiment of the present invention only in the shape of the slit of the dustproof cover, and the other parts are the same, so that the first embodiment of the present invention is the same. The description of the same part as the form is omitted. The dustproof cover 33 will be described below with reference to FIG. 16 showing a front view of the dustproof cover 33. The dustproof cover 33 is provided with a double-sided tape 33d for attaching to the inside of the first housing 1 and the stiffness of the dustproof cover 33. A reinforcing sheet 33c having an opening 33b provided to increase the holding force of the discharge disk, a felt 33a having slits 33f to 33n that can be elastically deformed to insert / discharge the disk 100 and perform dustproofing, It is composed of a double-sided tape 33e (not shown) for bonding the felt 33a and the reinforcing sheet 33c (corresponding to the double-sided tape 3e in the first embodiment described above). Here, the double-sided tapes 33d and 33e are not limited to double-sided tapes and may be adhesives. The double-sided tape 33d is provided outside the opening 1a of the upper cover 1, and is provided so that the double-sided tape 33d does not protrude from the front surface after being attached to the upper cover 1 of the dustproof cover 33. The opening 33b of the reinforcing sheet 33c is a drum-shaped opening that is smaller than the opening 1a of the upper cover 1, has a large central portion, and has a small end. The opening width of the end portion is set to a width obtained by adding a dimensional tolerance to the width obtained by adding the thickness of the disk 100 and the thickness of the felt 33a. The reinforcing sheet 33c is provided by the opening 33b so as to suppress the deformation of the felt 33a when the disc 100 is ejected. Further, since the reinforcing sheet 33c can be seen from the outside of the apparatus, a black resin sheet whose surface is matted is used. Although a black resin sheet with a matte surface is used here, a transparent sheet may be used because it has the same color as the felt 33a.

  The double-sided tape 33e is provided outside the opening 33b of the reinforcing sheet 33c, and is provided so as not to hinder the deformation of the felt 33a when the disc 100 is inserted. The felt 33a has a wavy central slit 33f provided on the average level with the transport track of the disk 100 guided by the rubber rollers 6a to 6d, and the recording surface side of the disk 100 from the height of the disk transport track. That is, at the bottom of the figure, slits 33g and 33h at both ends provided at a height shifted by half the maximum thickness (here, 0.75) of the disk 100, and a slit 33i that gently connects the slit 33f and the slits 33g and 33h. 33j, vertical slits 33k, 33L provided at positions on both sides approximately 4 cm away from the center, and vertical slits 33m, 33n provided at positions on both sides approximately 6 cm away from the center, The felt 33a is elastically deformed through the slits 33f to 33n so that the disk 100 can pass therethrough. That. Further, the dust cover 33 is provided with holes 33y and 33z that engage with positioning bosses (not shown) of the upper cover 1, whereby the dust cover 33 is positioned on the apparatus.

  The operation of the dustproof cover 33 configured as described above will be described.

  When the disc 100 is inserted into the slit 33f, since the slit 33f is on the disc transport track on average, the upper and lower felts 33a of the slit 33f are inclined evenly inwardly. As a result, the disc 100 is fed into the apparatus in the correct posture. At this time, since the disk 100 is held on the disk transport track, the recording surface side of the felt 33 a of the slits 33 g and 33 h at the end of the dustproof cover 33 is not in contact with the recording surface of the disk 100. Therefore, there is no fear that dust attached to the felt 33a will adhere to the recording surface in the vicinity of the outer periphery of the disk 100, and scratches and dirt on the disk 100 can be prevented.

  Next, when the disc 100 is ejected, the felt 33a and the recording surface do not come into contact with each other in the vicinity of the outer periphery of the disc 100 in the same manner as when inserted, so that there is no possibility that the scrap of the rubber roller attached to the disc 100 will adhere to the felt 33a. There is no possibility that the scrap of the rubber roller will spread on the recording surface of the disk 100. Further, since the slit 33f has a wave shape, the contact between the discs 100 and 101 and the felt 33a at the center of the dust cover 33 increases, and the force for holding the disc 100 increases. Thereby, even when the apparatus is placed vertically, the disks 100 and 101 ejected by the ejecting operation can be stably held without dropping.

  As described above, in the disk transport device of the second embodiment, the felt slit forming the dustproof sheet has a length longer than the diameter of the disk, and the vicinity of the center thereof is formed in a wavy shape. And at least one end side of the slit is biased so as to be positioned on the recording surface side in the disc thickness direction with respect to the vicinity of the center portion. In the vicinity of the outer periphery of the disc, there is no fear that dust attached to the felt will adhere to the recording surface, and scratches and dirt on the disc can be prevented.

  Also, since the slit near the center of the felt forming the dustproof sheet is wavy, the contact area with the disk increases near the center and its holding power increases, so even with a small diameter disk, the device can be placed vertically. Even in such a case, the disc ejected by the ejecting operation can be stably held without dropping.

In the disk transport device of the second embodiment, the vicinity of the center is a wavy slit having a smooth curved shape, but it may be a wavy shape such as a triangular mountain shape partially formed of a straight line. However, the shape is not limited as long as it is substantially coincident with the disk transport track on average.
(Embodiment 3)
Next, a third embodiment of the present invention will be described. The third embodiment is different from the first embodiment in the shape of the roller for conveying the disk, and the dust cover, which is the main feature of the present invention, is the same, so the first embodiment of the present invention. The description of the same parts as those in FIG. Hereinafter, description will be made based on FIG. 17 and FIG. 18 showing a diagram showing a clamping state of the transport roller and the disk. FIG. 17 shows a front cross section with respect to the transport direction of the disk in the portion where the roller is arranged. The chassis 43 is provided with a long roller 41 provided on at least one side so as to sandwich and hold the disk from above and below, and disk guides 42a and 42b provided opposite to the roller 41. Although not shown, it is configured to be rotated by driving means such as a motor. The roller 41 is formed so that the diameters on both sides are larger than the center in the axial direction, and the disk guides 42a and 42b facing the roller 41 are also inclined so that the roller 41 and both sides in the axial direction approach each other. ing.

  The disk 100 is held between the roller 41 and the disk guides 42 a and 42 b by being inserted between the rollers 41 and the disk guides 42 a and 42 b, so that the disk can be transported by the rotational drive of the roller 41. Here, between the roller 41 and the guides 42a and 42b, in order to hold the disk 100 by clamping, it has an appropriate urging force in the clamping direction. At the time of the conveyance, as shown in FIGS. 18A and 18B, the both ends of the disk 100 in the axial direction of the roller 41 sandwiching the disk 100 due to the inclination of the surface of the roller 41 itself and the inclination of the guides 42a and 42b. It will be conveyed while in contact with the vicinity of the part. FIG. 18A shows a clamping state at a position shortly after the disk 100 is inserted, and this position is also configured to convey while contacting the vicinity of the outer periphery of the disk 100. 18B, the central portion of the maximum width of the disc 100 in the conveyance direction is sandwiched between the roller 41 and the guides 42a and 42b. The vicinity of the outer peripheral portion is conveyed while contacting the roller 41 and the guides 42a and 42b.

  Here, in the case of the third embodiment, the disc 100 itself is conveyed without rotating, but the disc 100 is pressure-bonded between the roller 41 and the guides 42a and 42b in the thickness direction of the disc 100. As is apparent from FIGS. 18A and 18B, the contact pressure between the disk 100 and the roller 41 is larger in the case of FIG. That is, the contact portion near the outermost portion in the width direction in the conveying direction (corresponding to FIG. 5B) is more likely to cause adhesion residue, and the corresponding portion is the slit at the end of the dust cover 3 described above. The 3g and 3h portions are corresponding positions.

  As described above, even in the case of the disk reproducing apparatus according to the third embodiment, it is a slot-in type desk conveying apparatus in which a disk is directly inserted and conveyed to a reproducible position for inserting / ejecting the disk. A dust insertion sheet made of an elastic material having a disk insertion opening opened in the housing, a slit for closing the disk insertion opening and inserting the disk, and a roller in contact with the outer periphery of the inserted disk And a conveying means for conveying the disk by transmitting a driving force to the roller, and a driving means for transmitting the driving force to the roller, and the slit of the dustproof sheet has a length of the disk. The slit is formed longer than the diameter, and the vicinity of the center thereof is substantially coincident with the transporting track of the disk, and at least one end side of the slit is the center. It is biased so that it is positioned on the recording surface side in the thickness direction of the disc with respect to the vicinity of the area, and there is no risk of dust or debris on the dustproof sheet adhering to the recording surface near the outer periphery of the disc. , It has the effect of being able to prevent dirt.

Further, in the disk reproducing apparatus of the present embodiment, the roller that holds and conveys the disk is a long roller that has at least one of the disks so as to sandwich the disk from above and below, and the roller is in the center in the axial direction. Compared to the outer diameter of the disk, it is configured to be transported while being in contact with the vicinity of the outer periphery of the disk. Particularly, in the case of a large-diameter disk, the outermost vicinity in the width direction in the transport direction is used. Adhering debris is more likely to occur at the contact portion, but the dust debris sheet slits are biased toward the recording surface, so that the adhering debris does not transfer to the dust-proof sheet side when the disc is transported. It has the effect of preventing the recording surface of the disk from being scratched by being dragged by the dustproof sheet.
(Embodiment 4)
Next, a fourth embodiment will be described. In the case of the fourth embodiment, the overall configuration is substantially the same as that of the first embodiment described above, but the first embodiment is based on rubber rollers 6a, 6b, 6c, 6d when driving the disk during transport. Since the driving is different and the rubber roller 6a to 6d is conveyed by transmitting the rotational driving force of the motor 9 to all the rubber rollers 6 and the dust-proof cover part which is the main feature of the present invention is the same, the present invention is implemented. The description of the same part as in the first embodiment is omitted. Hereinafter, explanation will be given based on FIG. 19 which shows a diagram showing the holding state of the conveying rubber rollers 6a to 6d and the disc. FIG. 19 shows a stop state of the completion of discharging the large-diameter disc 100, and FIG. This corresponds to 8. 19 is also the same position as the state in which the disk 100 corresponding to FIG. 5 in the first embodiment is inserted and brought into contact with the rubber rollers 6a to 6d. Here, for convenience, both states are shown in FIG. explain.

  FIG. 19 shows an example in which the disk 100 is conveyed by transmitting the driving force of the motor 9 using all of the four rubber rollers 6a to 6d as driving rollers. That is, in the first embodiment, the driving force of the motor 9 is transmitted only to the rubber rollers 6a and 6b, but in this example, the driving force is also transmitted to the rubber rollers 6c and 6d. Here, as shown in the figure, a drive gear train (not shown) is configured to insert a disc 100 into the rubber rollers 6c and 6d so as to transmit a driving force that is reverse to that of the rubber rollers 6a and 6b. At the time of conveyance, the rotational force in the arrow direction is transmitted to the rubber rollers 6c and 6d with respect to the rotational force in the arrow direction of the rubber rollers 6a and 6b. With such a configuration of the rubber rollers 6a to 6d, the disk 100 is inserted into the position shown in FIG. 19, and when this is detected, the motor 9 starts to be driven. From this state, first, the rubber rollers 6b and 6d on both sides are started. Due to the rotational force and frictional force, the disc 100 is conveyed by linear movement substantially parallel to the conveying direction (arrow A direction) without rotating the disc 100 itself as in the first embodiment. At that time, the pair of roller arms 7a and 7b pushed between the rubber rollers 6b and 6d by the disk 100 and urged in the closing direction rotate in the directions indicated by arrows C and D, that is, in the opening direction. . Thereafter, as in the case of the first embodiment, the disc 100 is conveyed to a reproducible disc position by being driven by the rubber rollers 6a and 6c through the disc position as shown in FIG.

  At the time of discharge, reverse driving of the motor 9 causes the driving force opposite to the direction of arrow A during insertion and conveyance to be transmitted to the rubber rollers 6a and 6b, and the direction opposite to the arrow direction is transmitted to the rubber rollers 6c and 6d. The driving force is transmitted. Then, the disk 100 is transported in the ejection direction opposite to the arrow A direction, and the ejection completion stop state shown in FIG. 19 is obtained.

  As described above, even when all of the rubber rollers 6a to 6d are drive rollers, the scrap of scraping of the rubber rollers is transferred to the disk 100 as in the case where only one of the rubber rollers 6a and 6c is driven. As shown in FIG. 8 described above, when only one side is driven, only the adhering residue 30 is caused by the driven rubber rollers 6a and 6b. However, when driven on both sides, it is additionally caused by the rubber rollers 6c and 6d. The adhering residue 31 adheres to the disk 100. Therefore, the dust cover 3 adheres to the position 30b in addition to the position 30a. Therefore, when both sides are driven, the same effect can be obtained by shifting the slits 3g and 3h at the end of the dustproof cover 3 to the recording surface side.

  In the fourth embodiment, even when the four rubber rollers 6a to 6d on both sides are drive rollers, both sides of the slit are biased so as to be positioned on the recording surface side in the disc thickness direction with respect to the vicinity of the central portion. As a result, there is no fear that dust or debris attached to the dustproof sheet near the outer periphery of the disc may adhere to the recording surface, and the disc can be prevented from being scratched or soiled.

  The disk device of the present invention can reliably hold the ejected disk without deteriorating the transport performance of the disk and can suppress scratches on the disk, so that a disk-shaped recording medium such as a CD or DVD can be used. This is useful for a disk device having a slot-in loading mechanism for loading a disk into a device without using a tray.

1 Upper cover (first housing)
1a Opening 2 Lower cover (second housing)
3 dustproof cover 3a felt as dustproof sheet 3b opening 3c reinforcing sheet 3d double-sided tape 3e double-sided tape 3f-3j slit 3k-3n longitudinal slit 3o-3x slit 3y, 3z positioning hole 5 roller base 6a-6d rubber roller 6e, 6f roller gear 7a, 7b Roller arm 8a-8c Transmission gear 9 Motor 10a-10f Transmission gear 33 Dust-proof cover 33a Felt as dust-proof sheet 33b Opening 33c Reinforcement sheet 33d Double-sided tape 33e Double-sided tape 33f-33j Slit 33k-33n Vertical slit 33o-33x Slit 33y, 33z Positioning hole 41 Roller 42a, 42b Disc guide 43 Chassis

Claims (8)

A slot-in type disc transport device in which a disc is directly inserted and transported to a reproducible position,
A disc insertion opening opened in the housing for inserting / ejecting the disc;
A dustproof sheet made of an elastic material having a slit for closing the disk insertion port and inserting the disk;
Conveying means for holding the disk by a roller that contacts the outer periphery of the inserted disk and transmitting the driving force to the roller to convey the disk;
Driving means for transmitting a driving force to the roller,
The slits of the dustproof sheet are formed longer than the diameter of the disk, and the vicinity of the center is set to a substantially height position corresponding to the transport track in the thickness direction of the disk, and the roller of the slit is provided. A disc transport apparatus characterized in that the end side is biased to be positioned on the recording surface side in the disc thickness direction with respect to the vicinity of the center portion. The roller that holds and conveys the disc is a roller that abuts the outer peripheral edge of the disc and carries the disc while sandwiching the left and right sides of the disc, and rotates the disc itself by the rotational driving force of one of the left and right rollers. The disk device according to claim 1, wherein the disk device is configured to be conveyed while being moved. The roller that holds and conveys the disk is a long roller that has at least one of the disks so as to sandwich the disk from above and below, and the rollers are formed such that the diameters on both sides are larger than the center in the axial direction. The disk device according to claim 1, wherein the disk device is configured to convey while contacting the vicinity of the outer periphery of the disk. A reinforcing sheet made of an inelastic material is provided on the front surface of the dustproof sheet so as to be an opening smaller than the opening of the disk insertion opening, and the inner edge of the reinforcing sheet is placed on the dustproof sheet at a position facing the reinforcing sheet. The disk device according to claim 1 , wherein a slit parallel to the disk is provided. Wherein the end portion of the dust-proof sheet having a slit which is biased to the recording surface, the disk apparatus according to any one of claims 1 to 4, characterized in that the formation of the additional slits on the opposite side of said recording surface .   4. The disk device according to claim 1, wherein the slit of the dustproof sheet is formed in a wave shape in the vicinity of the center.   6. The disk device according to claim 1, wherein the slit of the dustproof sheet is formed so that the vicinity of the center and the vicinity of the end are smoothly connected.   4. The disk apparatus according to claim 1, wherein the dustproof sheet has a vertical slit formed at a position slightly outside the radius of the small-diameter disk from the center of the slit.

Images