JP2008004254A - Disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate a factor to generate a failure, by a simple constitution in a slot-in type disk drive which automatically loads any of two kinds of disk-like disks having different diameters to be driven, by eliminating a mechanical load exerted on a guide arm which also controls a position in the horizontal direction of this small diameter disk. <P>SOLUTION: This disk drive is constituted in such a manner that the inserted disk is conveyed inside the device by the automatic loading with a plurality of arms which support outer peripheral edge of two kinds of disks having the different diameters to be conveyed, or the disk housed inside the device is conveyed outside the device, and energizing force is exerted to a guide arm 29 which also controls the position in the horizontal direction of the small diameter disk to be inserted from the slot so that the tip always faces the centripetal direction, and the energizing force is maximized in nearly middle part of a rocking range of the tip of guide arm. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention drives an optical disk (for example, CD-R / RW, DVD-R / -RW / RAM / + R / + RW, etc.) as a recording medium for recording a large amount of information in information devices such as various computer systems. The present invention relates to a disk device.

  Generally, a disk device built in a personal computer (hereinafter referred to as a personal computer) or the like is usually provided with a disk tray for loading a disk, and the disk tray is configured to move forward and backward. Then, the disc loaded in the disc tray is driven in the disc apparatus main body, and information is recorded or reproduced.

  On the other hand, as a system that does not use a disk tray, so-called slot-in type disk devices tend to be often employed, which is suitable for making a personal computer thinner and smaller. Since this slot-in type disk device does not use a disk tray for loading / unloading the disk into / from the apparatus body, when the operator inserts a majority of the disk into the slot, the apparatus body The loading mechanism is activated and automatically loaded.

  48 and 49 show the configuration and operation of the loading mechanism in the conventional slot-in type disk apparatus. In the configuration shown in the figure, when the operator inserts the disc D, the disc D is inserted into the pin 100a at the front end of the first oscillating body 100, the left and right guide bodies 101 and 102, and the second oscillating body 103 from the middle. The position reaches the position shown in FIG. 48 while the height direction and the left-right position are restricted by the pin 103a at the tip.

  At this time, the first rocking body 100 is rotated in the direction of arrow 100A by pushing the tip pin 100a by the disk D, and the second rocking body 103 is also pushed by the disk D by the tip pin 103a being pushed by the arrow 103A. Rotate in the direction. Then, the switch lever 104 is pushed by the end of the second oscillating body 103 and rotates in the direction of the arrow 104A, and the detection switch 105 is operated.

  When the detection switch 105 is activated, the driving means 106 is started, and the movement of the first slide member 107 in the direction of the arrow 107A is started. The first slide member 107 and the second slide member 108 are connected at their respective ends by a slide connecting member 109, and the slide connecting member 109 is pivotally supported by a pin 110 so that the first slide member 107 and the second slide member 108 are pivoted. In synchronization with the retraction of the slide member 107, the second slide member 108 advances in the direction of the arrow 108A.

  Thus, when the first slide member 107 starts to move backward, the first rocking body 100 supported by the slide member 107 in a cantilever state is driven by the cam groove 107a of the first slide member 107. Since 100b is guided, the rocking body 100 rotates in the direction of the arrow 100B around the fulcrum 100c, whereby the pin 100a at the tip of the first rocking body 100 causes the disk D to move to the pins 111a and 111b of the disk positioning member 111. It is conveyed in the direction of the arrow 107A until it comes into contact.

  At this time, since the pin 103a of the second rocking body 103 rotates in the direction of the arrow 103A, the pin 103a of the second rocking body 103 is synchronized with the pin 100a at the tip of the first rocking body 100 and the disk D is rotated. After moving in the direction of the arrow 103A while being supported and the disk D abuts on the pins 111a and 111b of the disk positioning member 111, the disk D rotates to a position slightly away from the disk D.

  The above is the operation mode of the loading mechanism when the disk D is carried into the apparatus, but the loading mechanism when the disk D is carried out of the apparatus is the operation mode opposite to that described above. That is, as shown in FIG. 49, when the disk D is in a fixed position inside the apparatus, the first slide member 107 moves forward in the direction of the arrow 107B when the drive means 106 is started in the reverse rotation direction based on the unloading instruction. And the second slide member 108 connected to the slide connecting member 109 starts moving backward in the direction of the arrow 108B synchronously. As a result, the first oscillating body 100 rotates in the direction of the arrow 100A and the second oscillating body 103 rotates in the direction of the arrow 103B. Will be.

The disk D carried into the apparatus is clamped by a clamp head 112 that moves up and down at a fixed position. The clamp head 112 is integrated with a turntable 113 fixed to a drive shaft of a spindle motor 114. The spindle motor 114 is disposed on a frame member (not shown), and the frame member is moved up and down. (For example, patent document 1).
JP 2002-117604 A

  By the way, in the disk device to be implemented by the present invention, the two types of disks having different diameters are commonly called 12 cm disk and 8 cm disk, and the 12 cm disk is the most versatile. The mechanism for automatically loading any of these disks to enable the drive is extremely complex. In particular, a plurality of arm mechanisms for automatically loading a disk are configured in a narrow space, so that the rigidity cannot be increased, and the mechanical load must be made as small as possible.

  According to the present invention, in a slot-in type disk apparatus, two types of disks having different diameters, that is, a disk apparatus capable of driving both a disk-shaped large-diameter disk and a small-diameter disk, can be driven from the slot of the front bezel. An object of the present invention is to eliminate the mechanical load applied to the guide arm that controls automatic loading by the inserted disk and to eliminate the cause of failure in advance.

  Therefore, the present invention solves the above problems by the means described below. That is, in the first aspect of the invention, a disk inserted by automatic loading by a plurality of arms that can support and convey the outer peripheral edge of two types of disks having different diameters is carried into the apparatus, or The disk unit is designed to carry out the disk accommodated in the apparatus to the outside of the apparatus. The tip of the disk is always centripetal with respect to the guide arm that also serves to regulate the lateral position of the small-diameter disk that can be inserted from the slot of the bezel. An urging force is applied so that the urging force is maximized at approximately the middle of the swing range of the tip end of the guide arm.

  According to a second aspect of the present invention, in the disk device according to the first aspect, the guide arm is coupled to one end of the link lever, and the other end of the link lever is biased by the torsion spring.

  According to the present invention, in the slot-in type disk device that can automatically drive any of two types of disk-shaped disks having different diameters, it also serves to regulate the lateral position of the small-diameter disk. The mechanical load applied to the guide arm is eliminated, and the cause of failure is wiped off with a simple configuration.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in order to make an understanding of this invention easy, it demonstrates including the structure relevant to the summary of this invention.

  FIG. 1 is a view showing the appearance of a slot-in type disk device 1 embodying the present invention, and an opening 2a is formed at the center of a top plate of a chassis case 2 configured in a shield state. A convex portion 2b that protrudes inward is formed at the peripheral edge. A front bezel 3 is fixed to the front end of the chassis case 2, and a slot for inserting a 12 cm disk (hereinafter referred to as a large diameter disk) D1 and an 8 cm disk (hereinafter referred to as a small diameter disk) D2 into the front bezel 3. 3a and through holes 3b and 3c for releasing the emergency are formed. Further, the front bezel 3 includes a push button 4 for carrying out the accommodated large-diameter disk D1 or small-diameter disk D2 to the outside of the apparatus and an indicator 5 for displaying the operation state of the disk apparatus 1.

  FIG. 2 is a perspective view of the chassis case 2 with the top plate portion removed, and a base panel 6 is disposed in the chassis case 2, and the chassis panel 2 is arranged in an obliquely downward state from the center. A drive unit A for the diameter disk D1 and the small diameter disk D2 is provided. This drive unit A has a rear end portion located at the center of the apparatus with the front bezel 3 side as a support shaft in order to release the state in which the center holes D1a and D2a of the large-diameter disk D1 and the small-diameter disk D2 are clamped or clamped. The elevating frame 7 that can swing in the vertical direction is connected to the base panel 6 at a plurality of locations by a known buffer support structure 8.

  A clamp head 9 is disposed at the tip of the elevating frame 7 at a position corresponding to the center of the large-diameter disk D1 or the small-diameter disk D2 that has been loaded and stopped. The clamp head 9 is formed integrally with the turntable 10 and is fixed to a drive shaft of a spindle motor 11 disposed immediately below. The large-diameter disk D1 clamped on the chuck claw 9a of the clamp head 9 by the spindle motor 11. Alternatively, the small-diameter disk D2 is rotated and driven to record or reproduce information.

  Reference numeral B denotes a head unit supported by the elevating frame 7. A carrier block 13 for reciprocating the optical pickup 12 in the diameter direction of the large diameter disk D1 and the small diameter disk D2 is fixed to the elevating frame 7 at both ends. The guide shafts 14 and 15 are supported. The carrier block 13 moves forward and backward by the driving force of the sled motor 16 transmitted from the gear train 17 to the screw shaft 18 (see FIG. 3).

  Next, a plurality of arms for carrying in and carrying out the large-diameter disk D1 and the small-diameter disk D2 are arranged on the plane of the base panel 6 so as to surround the elevating frame 7, and are arranged on the back surface of the base panel 6. It is comprised so that it may act | operate with a drive mechanism. Among the plurality of arms, the disk support arm 19 performs a central function in loading and unloading of the disk. The disk support arm 19 swings around the rivet pin 20 as a fulcrum, and the rear end side of the large-diameter disk D1 and the small-diameter disk D2. In addition, the height position in the transport process is accurately maintained. For this reason, the holder 21 is provided at the tip, and the rear end side of the large-diameter disk D1 and the small-diameter disk D2 is held by the concave groove 21a of the holder 21.

  Reference numeral 22 denotes a loading arm for carrying the large-diameter disk D1 into the apparatus. The large-diameter disk inserted by the loading roller 22a is swinged by being pulled by a link lever 24 connected by a pivot pin 23. Pressing is started from the front side of the center of D1, and the large diameter disk D1 is attracted to the inside of the apparatus.

  The guide arm 25 swings with a pivot pin 26 rotatably attached to the base panel 6 as a fulcrum, and the side portion of the small-diameter disk D2 conveyed by a support member 25a fixed in a suspended state at the tip of the guide arm 25. It fulfills the function of supporting and guiding it to a fixed position. The guide arm 27 swings around the rivet pin 28 as a fulcrum, and supports the side portion of the large-diameter disk D1 conveyed by a support member 27a fixed in a suspended state at the tip of the guide arm 27 to guide it to a fixed position. And the function of supporting the side portion of the small-diameter disk D2 and guiding it to a fixed position. In the guide arm 27, the end of the third swing member 51 and the end of the tension coil spring 53 are attached to the pivot pin 27 b at the base end on the back surface of the base panel 6.

  The guide arm 29 swings around the rivet pin 30 as a fulcrum, supports the side portion of the small-diameter disk D2 conveyed by the support member 29a fixed in a standing state at the tip thereof, and has a function of leading to a fixed position. It functions to support the side of the disk D1 and position it at a fixed position. Since the action pin 33a of the link lever 33, which is biased by the tension coil spring 31 and swings around the rivet pin 32, is engaged with the slit 29e of the guide arm 29, the tip of the guide arm 29 is always centripetal. The state is biased in the direction. The guide arm 35 connected by a follower pin 35b at the guide groove 29c at the rear end of the guide arm 29 is swung around the rivet pin 36 as a fulcrum, and is largely supported by a support member 35a fixed in a standing state at the tip. It functions to support the side portions of the diameter disk D1 and the small diameter disk D2 and position them at fixed positions.

  Reference numeral 37 denotes a lock lever, which swings around a rivet pin 38 as a fulcrum so that an angle 37a formed at the tip can lock a tongue piece 29b provided at the tip of the guide arm 29. . The lock lever 37 is always biased in the centripetal direction by the wire spring 39 at the tip angle 37a, but normally the stopper 40 functions and is stationary at a fixed position.

  Reference numeral 41 denotes a lead wire, which is disposed along the lower side of the front bezel 3 and has an end connected to the rear end of the lock lever 37, and the locking end 41a is bent in an upright state. It faces the slot 3a of the front bezel 3. Therefore, when the large-diameter disk D1 is inserted from the slot 3a, the locking end 41a is pressed by the outer peripheral edge of the large-diameter disk D1, so that the lead wire 41 moves laterally in parallel with the front bezel 3. . As a result, the lock lever 37 is pulled, and the angle 37a at the tip of the lock lever 37 swings in the centrifugal direction, so that the tongue piece 29b of the guide arm 29 can be prevented from being locked.

  In the mechanism element exposed on the plane of the base panel 6, reference numeral 42 a is a locking tongue piece of the lever arm 42 (see FIG. 3), which functions to control the position of the guide arm 27. Details of the operation mode will be described later. Reference numeral 71 denotes a clamp release pin for releasing the state in which the large-diameter disk D1 and the small-diameter disk D2 are clamped by the clamp head 9.

  In order to operate each guide arm configured on the plane of the base panel 6 as described above, the mechanism elements configured on the back surface of the base panel 6 will be described below. The disk device 1 according to the present invention performs operation control related to the conveyance of the large-diameter disk D1 and the small-diameter disk D2 by advancing and retreating a loading slider 43 disposed in the front-rear direction as indicated by phantom lines in FIG. The structure of the loading slider 43 that is configured to complete all of the components and serves as the center of the mechanism element and each mechanism element that is controlled by the loading slider 43 will be described.

  FIG. 4 shows a state in which the loading slider 43 is viewed from the direction facing the back surface of the base panel 6. As shown in FIG. 4, the loading slider 43 is formed in a columnar shape, and a rack gear 43 a is formed at the front end portion thereof. ing. On the other hand, the rear end portion is formed with a guide groove 43b through which an upper end horizontal portion 43b-1 and a lower end horizontal portion 43b-2 and a vertical portion 43b-3 having a step in the middle communicate with each other.

  The upper end horizontal portion 43b-1 is provided with a driven pin 45a of a first swinging member 45 that swings with a rivet pin 44 as a fulcrum, and a second portion that swings with the rivet pin 46 as a fulcrum in the vertical portion 43b-3. A driven pin 47a of the swing member 47 is attached. The action pin 47 b of the second swing member 47 is attached to the end through hole 48 a of the driven slider 48.

  A guide groove 43c-1 and a guide groove 43c-2 are formed on both sides of the middle portion of the loading slider 43. An inclined surface is formed at the rear end of the guide groove 43c-1, and the front and rear ends of the guide groove 43c-2 are also inclined. The driven pin 29d of the guide arm 29 is mounted so as to be positioned at the opening portion of the rear end inclined portion of the guide groove 43c-2 in the state where the loading slider 43 is most advanced.

  Reference numeral 43d denotes a guide groove that pulls the link lever 24 so that the loading arm 22 operates in synchronization with the conveyance of the large-diameter disk D1. As shown in FIG. 5, a guide slit 49a is formed in a guide plate 49 fixed to the base panel 6 at a position overlapping with the guide groove 43d, and the guide groove 49d and the guide slit 49a are fixed to the tip of the link lever 24. The driven pin 24a is inserted. Accordingly, the guide slit 49a located at a fixed position interacts with the guide groove 43d moving forward and backward, and the operation of the driven pin 24a is controlled.

  Further, a cam groove 43e for moving the driven pin 7a that moves up and down the lifting frame 7 is formed on the side of the loading slider 43 that faces the lifting frame 7. The cam groove 43e includes a lower portion 43e-1 that keeps the lifting frame 7 in a low position, an inclined portion 43e-2 that raises or lowers the lifting frame 7, and a high portion 43e-3 that keeps the lifting frame 7 in a high position. Is formed.

  FIG. 6 is an exploded perspective view of the power transmission mechanism configured at the rear of the apparatus as viewed from the back side, and a cam groove for vertically moving the driven pin 7b that controls the lifting and lowering of the lifting frame 7 of the driven slider 48. 48c is formed. The cam groove 48c includes a lower portion 48c-1 that keeps the lifting frame 7 in a low position, an inclined portion 48c-2 that raises or lowers the lifting frame 7, and a high portion 48c-3 that keeps the lifting frame 7 in a high position. Is formed.

  An action pin 51 a of a third swinging member 51 that swings around the rivet pin 50 is mounted on the end through hole 48 b of the driven slider 48. An end 52a of the link wire 52 is attached to the working pin 51a, and the other end 52b is locked to the through hole 45b of the first swing member 45. The third oscillating member 51 is urged counterclockwise in the drawing by the tension coil spring 53, but the movement of the action pin 51a is restricted by the link wire 52, so that the device is in operation. If not, it stops at a fixed position. An action piece 48d for operating the lever arm 42 is formed on the side of the end through hole 48b.

  Next, the link arm 54 connected between the first swing member 45 and a gear disk 59 described later is connected to the first link arm 54 a connected to the first swing member 45 by the connecting member 55 and the tension coil spring 56. The second link arm 54b urged by the combination is configured so as to be extendable and contractable, and the safety of the mechanism is ensured when the large diameter disk D1 and the small diameter disk D2 are conveyed.

  FIG. 7 is a perspective view of the configuration of the end of the second link arm 54b as seen from the back of the apparatus. The through hole 54b-1 of the second link arm 54b and the through hole 19b of the rotating substrate 19a of the disc support arm 19 are shown. The through hole 59a of the gear disk 59 is pivotally supported by the pivot pin 57 at the same time. On the other hand, the center hole 19c of the rotating board 19a of the disk support arm 19 and the center hole 59b of the gear disk 59 are simultaneously supported by a rivet pin 20 having one end fixed to the base panel 6, and the locking piece 19d of the rotating board 19a is supported. Faces the locking window 59c of the gear disk 59 so as to be integrated.

  A gear 59d is formed on a part of the outer peripheral edge of the gear disk 59 facing the side surface of the chassis case 2, and switch activation step portions 59e and 59f are formed on the outer peripheral edge opposite to the gear 59d. The limit switch 60 that is inserted by the switch activation step portions 59e and 59f is mounted on a wiring board (not shown) disposed on the bottom surface of the chassis case 2, and a switch knob 60a is connected to the switch activation step portion 59e and 59f. It is operated at 59f.

  The lever arm 42 described above is fixed so as to swing with the rivet pin 61 as a fulcrum, and the locking tongue piece 42a faces the surface of the base panel 6 from the opening of the base panel 6, and the tip of the spring piece 42b is placed. It is made to contact the opening wall 6a of the base panel 6, and the urging | biasing force to a centrifugal direction is generate | occur | produced in the roller 42c of a front-end | tip part. As a result, the lever arm 42 is stationary at a fixed position when the roller 42c is in contact with the side wall of the driven slider 48, but when the driven slider 48 slides, the roller 42c presses against the action piece 48d. As a result, the rivet pin 61 swings around the fulcrum, and the locking tongue piece 42a moves in the centrifugal direction.

  Next, a mechanism for swinging the guide arm 25 will be described. In this guide arm 25, a pivot pin 26 at the base end serving as a fulcrum of the swing is extended on the back surface of the base panel 6, and a roller support plate 62 is fixed to the end portion. Since a tension coil spring 63 is stretched on the roller support plate 62 as shown in FIG. 3, a urging force in the clockwise direction acts on the roller support plate 62 so that the guide arm 25 tilts in the centripetal direction. Become. As shown in FIG. 8, the double roller 64 disposed on the roller support plate 62 has a large diameter portion 64a and a small diameter portion 64b configured coaxially.

  In the figure, a rack slider 65 disposed along the inner wall of the chassis case 2 includes a rack gear 65 a that meshes with a gear 59 d of the gear disk 59, and moves forward and backward in synchronization with the rotation of the gear disk 59. A low level guide piece 65b is formed on the lower side of the middle part of the rack slider 65, and a high level guide piece 65c is formed on the upper side. The low level guide piece 65b guides the large diameter part 64a of the double roller 64, and the high level guide piece 65c. Guides the small diameter portion 64b.

  The mechanism element configured as described above is actuated by the forward and backward movement of the loading slider 43, and this drive mechanism is disposed at the corner of the back of the apparatus as shown in FIG. Then, the rotational force of the worm gear 67 of the output shaft of the loading motor 66 serving as the power source of the drive mechanism is transmitted while being decelerated sequentially from the small diameter gear to the large diameter gear by the gear train by the double gears 68, 69, and 70. The driving force is transmitted from the small-diameter gear of the double gear 70 meshed with the rack gear 43a of the loading slider 43, and the loading slider 43 moves forward and backward.

  Next, an operation mode of the disk device 1 configured as described above will be described. As described above, the disk device 1 of the present invention is configured to be able to transport the large diameter disk D1 and the small diameter disk D2, but first, the mode of transporting the large diameter disk D1 is shown in FIGS. Description will be made based on the above, and the mode of conveyance of the small-diameter disk D2 will be described with reference to FIGS.

  9 to 15 are plan views in which the main part of the configuration exposed on the surface of the base panel 6 is drawn by a solid line, and the main part of the configuration of the back surface of the base panel 6 at this time is indicated by a broken line. 16 to 22 are bottom views in which main parts of the configuration exposed on the back surface of the base panel 6 are drawn by solid lines, and the configuration of the surface of the base panel 6 at this time is indicated by broken lines. 9 to 15, the cam grooves 43e and 48c and the driven pins 7a and 7b do not originally appear in the drawing, but are illustrated for ease of explanation and are easy to understand.

  9 and 16 show a state in which the large-diameter disk D1 is waiting to be inserted from the slot 3a of the front bezel 3, and each arm is stationary in the initial state. At this time, the guide arm 25 has a large diameter portion 64a of the roller 64 of the roller support plate 62 fixed to the pivot pin 26 on the back surface of the base panel 6 so that the rack slider 65 can be moved as shown in FIGS. The guide arm 25 is in contact with the low-level guide piece 65b, and is stopped at a position where the guide arm 25 is swung in the centrifugal direction by a predetermined amount from a position where it is most swung in the centripetal direction.

  This is because when the guide arm 25 stops at the position where it is most swung in the centripetal direction and waits for the insertion of the disk, the small diameter disk D2 is supported when the small diameter disk D2 is inserted toward the left side of the apparatus. In order to prevent the small diameter disk D2 from entering the left side of the member 25a and being unable to carry the small diameter disk D2, the guide arm 25 is swung in the centrifugal direction by a predetermined amount from the position where the guide arm 25 is swung most in the centripetal direction. Stop and wait for disc insertion.

  Next, since the base end portion of the guide arm 27 is urged by the tension coil spring 53, a force that the tip support member 27a swings in the centripetal direction always works, but is connected to the pivot pin 27b. Since the third swinging member 51 is stationary at a fixed position, the guide arm 27 is stationary in the state shown in FIG. This is because the link wire 52 attached between the first swing member 45 and the action pin 51a of the third swing member 51 in a stationary state functions as a stopper, and the third swing member 51 swings. By preventing movement.

  Similarly, the disk support arm 19, the guide arm 29, the guide arm 35, and the loading arm 22 to which power is transmitted as the loading slider 43 moves are also stationary in the state shown in FIG. The driven pin 7a of the elevating frame 7 guided by the cam groove 43e of the loading slider 43 is in the lower portion 43e-1 of the cam groove 43e, while the elevating frame guided by the cam groove 48c of the driven slider 48. 7, the driven pin 7b is located at the lower portion 48c-1 of the cam groove 48c, so that the elevating frame 7 is in the most lowered state as shown in FIG.

  10 and 17, the large-diameter disk D1 is inserted by the operator from the slot 3a of the front bezel 3, and the front end side in the inserting direction of the large-diameter disk D1 is the holder 21 of the disk support arm 19 and the support member of the guide arm 29. The state which contact | abutted to 29a is shown. At this time, the large-diameter disk D1 presses the support member 25a at the tip of the guide arm 25, and the guide arm 25 swings in the centrifugal direction from the position indicated by the phantom line in FIG. Further, the side portion of the large-diameter disk D1 presses the locking end portion 41a of the lead wire 41 and slides the lead wire 41 in the direction indicated by the arrow in FIG. As a result, the lock lever 37 is pulled by the lead wire 41, and the angle 37a at the tip of the lock lever 37 swings in the direction indicated by the arrow in FIG.

  11 and 18 show a state in which the large-diameter disk D1 is further inserted by the operator from the above state. The disk support arm 19, the guide arm 25, and the guide arm 29 are pressed by the large-diameter disk D1. Swings in the centrifugal direction. Accordingly, the base of the disk support arm 19 rotates from the position shown in FIG. 39A to the position shown in FIG. 39B with the rivet pin 20 as a fulcrum, and the limit switch 60 is actuated by the switch starting step 59e of the gear disk 59. The At this time, the rack slider 65 meshing with the gear disc 59 advances slightly.

  Based on the signal from the limit switch 60 activated by the switch activation stage 59e, a low potential current flows through the loading motor 66 at this point. As a result, the loading slider 43 retreats and pulls the link lever 24, the loading arm 22 swings to the position shown in FIGS. 11 and 18, and the loading roller 22a at the tip comes into contact with the side of the large-diameter disk D1. Stop.

  At this time, if a high-potential current for generating a large torque necessary for carrying in the large-diameter disk D1 is supplied, there is a risk that a malfunction occurs in the transport mechanism. That is, in FIG. 11, the component force F1a due to the pressing of the loading roller 22a and the component force F1b due to the pressing of the support member 25a of the guide arm 25 are in the vicinity of the substantially center of the large-diameter disk D1, so the resultant force is extremely small and large No force for propelling the disk D1 in the loading direction is generated. Moreover, in the state shown in FIG. 11, the support member 29a biased in the centripetal direction at the tip of the guide arm 29 presses the rear side portion of the large-diameter disk D1.

  In this situation, if a high-potential current necessary for transporting the large-diameter disk D1 is passed through the loading motor 66, the loading arm 22 stops while holding the large-diameter disk D1, and the loading operation stops. If this state continues, it may lead to dangers such as damage to the gear train of the transport mechanism or burning of the loading motor 66, for example. In order to avoid the occurrence of such a problem, a low potential current is allowed to flow to the loading motor 66 at this point.

  In the state where a low-potential current is supplied to the loading motor 66, the large-diameter disk D1 is loaded with the large-diameter disk D1 only by the driving force of the loading motor 66, and the large-diameter disk D1 does not rotate. When the operator presses the large-diameter disk D1, the driving force of the loading motor 66 and the insertion force of the operator are applied, so that the large-diameter disk D1 is transported. .

  12 and 19 show a state where the large-diameter disk D1 is further inserted by the operator from the above state, and the gear disk 59 at the base of the disk support arm 19 further rotates. As a result, the link arm 54 is pulled, the first swinging member 45 swings around the rivet pin 44, and the driven pin 45a moves backward, so that it is attached by the driving force of the loading motor 66 through which a low potential current flows. The loading slider 43 in the biased state also moves backward.

  When such an operation is reached, the guide arm 29 swings in the centrifugal direction and the support of the large-diameter disk D1 by the support member 29a is released. This is because the driven pin 29d of the guide arm 29 located on the inclined surface at the rear end of the guide groove 43c-1 of the loading slider 43 in the state of FIG. It is by receiving.

  As the first swing member 45 swings as described above, the third swing member 51 whose swing is regulated by the link wire 52 swings around the rivet pin 50 by the action of the tension coil spring 53. As a result, the guide arm 27 swings in the centripetal direction, and the rear side portion of the large-diameter disk D1 is supported by the support member 27a at the tip. At this time, since the link lever 24 is pulled by the backward movement of the loading slider 43, the loading arm 22 swings in the centripetal direction, and the loading roller 22a at the tip contacts and supports the front side portion of the large-diameter disk D1. Since the driven pin 7a of the elevating frame 7 is in a state of laterally moving the lower portion 43e-1 of the cam groove 43e, the elevating frame 7 stops at the position shown in FIG.

  On the other hand, the gear disk 59 at the base of the disk support arm 19 rotates to the position shown in FIG. 39C, and the switch activation step 59f reversely operates the switch knob 60a of the limit switch 60. At this time, the current supplied to the loading motor 66 is switched to a high potential by a signal from the limit switch 60 so that a torque necessary for carrying in the large-diameter disk D1 is generated. Then, since the component force F1a due to the pressing of the loading roller 22a and the component force F1b due to the pressing of the support member 25a of the guide arm 25 increase, a resultant force F2 propelled in the loading direction is generated, and automatic loading by the loading motor 66 is started. The

  13 and 20 show a state in which automatic loading by the loading motor 66 is started and the large-diameter disk D1 is loaded. When the loading slider 43 is further retracted from the state of FIG. 12, the driven pin 29d of the guide arm 29 enters the guide groove 43c-1 from the inclined portion of the loading slider 43. As a result, the guide arm 29 is further swung in the centrifugal direction, and the support member 29a at the tip is not in contact with the side portion of the large-diameter disk D1. 40A to 40D continuously show the operation mode of the guide arm 29. FIG.

  Further, the link lever 24 is pulled by the backward movement of the loading slider 43, and the swinging of the loading arm 22 in the centripetal direction is started. 41 (A) to 41 (D) continuously show the swinging state of the loading arm 22, and the state of the loading arm 22 shown in FIG. 12 is changed from the initial state of FIG. 41 (A) to FIG. This corresponds to the state shifted to (B).

  In the link lever 24 that controls the swinging of the loading arm 22, the driven pin 24 a fixed to the tip of the link lever 24 is inserted into the guide groove 43 d of the loading slider 43 and the guide slit 49 a of the guide plate 49 as described above. Therefore, when the loading slider 43 is retracted, the driven pin 24a is sandwiched between the inclined surface of the rear end of the guide groove 43d and the side wall of the guide slit 49a, and the driven pin 24a is also retracted as the loading slider 43 is retracted. The link lever 24 is pulled and the loading arm 22 swings.

  When the loading slider 43 retracts to the position shown in FIG. 13, the upper horizontal portion 43b-1 of the guide groove 43b pushes up the driven pin 45a of the first swing member 45, and the rivet pin 44 serves as a fulcrum. The swing member 45 is swung, and the gear disk 59 is rotated via the link arm 54. As a result, the disk support arm 19 swings in the centrifugal direction, that is, the holder 21 supporting the rear end of the large diameter disk D1 moves backward in synchronization with the loading of the large diameter disk D1. At this time, since the driven pin 47a of the second swing member 47 is in a state of sliding along the vertical portion of the guide groove 43b, the second swing member 47 is stationary, and the driven slider 48 is also It is in a stationary state.

  The guide arm 27 biased by the tension coil spring 53 during the transition from the state shown in FIG. 12 to the state shown in FIG. 13 is pushed back as shown in FIG. 13 as the large-diameter disk D1 is loaded. The lever arm 42 comes into contact with the locking tongue piece 42a and stops. At this time, since the third swinging member 51 swings slightly, the action pin 51a moves in the centripetal direction in the end through hole 48b of the driven slider 48 that is stationary, and the link wire 52 is slightly bent. It will be in a state to be.

  On the other hand, the support member 25a of the guide arm 25 supports the front side portion of the large-diameter disc D1, and the high-order guide piece 65c of the rack slider 65 advanced by the rotation of the gear disc 59 is separated from the small-diameter portion 64b of the double roller 64. Is in a state. At this time, the driven pin 7a of the elevating frame 7 is in a state of laterally moving the lower portion 43e-1 of the cam groove 43e, and the driven slider 48 is stationary, so that the elevating frame 7 is still in FIG. Stops at position A).

  14 and 21, the loading slider 43 is further retracted from the state of FIGS. 13 and 20, the link lever 24 is pulled, and the loading arm 22 is swung to the position shown in FIG. A state in which the center of the center hole D1a of the large-diameter disk D1 and the center of the clamp head 9 coincide is shown. On the other hand, since the driven pin 29d of the guide arm 29 goes straight in the guide groove 43c-1 of the loading slider 43, the guide arm 29 and the guide arm 35 are stationary at the positions shown in FIG. At this time, the support member 29a and the support member 35a receive and position the outer peripheral edge of the large-diameter disk D1, so that the positions of the center hole D1a of the large-diameter disk D1 and the clamp head 9 are exactly matched.

  As the loading slider 43 moves backward, the driven pin 45a of the first swing member 45 is pushed up to the upper end horizontal portion 43b-1 and shifts to the vertical portion 43b-3. Therefore, the first swing member 45 is shown in FIG. The disk support arm 19 is also swung in the centrifugal direction by the rotation of the gear disk 59 by the link arm 54. The rotation of the gear disk 59 further advances the rack slider 65, and the small diameter portion 64b of the double roller 64 rides on the high-order guide piece 65c. Therefore, the guide arm 25 is greatly swung in the centrifugal direction, and is greatly increased by the support member 25a. The support of the outer peripheral edge of the diameter disk D1 is finished. As a result, the guide arm 25 is retracted to the side of the elevating frame 7 and does not extend over the elevating frame 7, so that there is no possibility that the elevating elevating frame 7 and the guide arm 25 collide.

  At this time, the large-diameter disk D1 presses the support member 27a of the guide arm 27. Since the support member 27a abuts on the locking tongue piece 42a of the lever arm 42, the stop position is determined. At that time, the horizontal center of the large-diameter disk D1 with respect to the clamp head 9 coincides. On the other hand, the vertical center of the large-diameter disk D1 with respect to the clamp head 9 is determined by the holder 21 of the disk support arm 19 and the loading roller 22a of the loading arm 22 which are stationary in the state shown in FIG.

  As described above, according to the disk device of the present invention, the automatic loading of the large-diameter disk D1 is started and the state shown in FIG. And is carried into the apparatus and stopped at a position where the clamp head 9 can clamp the center hole D1a.

  In the process from FIG. 13 to FIG. 14, the driven pin 7a of the elevating frame 7 moves from the lower position portion 43e-1 to the inclined portion 43e-2 and rises due to the retreat of the cam groove 43e of the loading slider 43. Become. On the other hand, the driven pin 47a of the second swing member 47 reaches the lower end horizontal portion 43b-2 from the vertical portion 43b-3 of the loading slider 43, and the second swing member 47 swings in the centrifugal direction. As the slider 47b moves the driven slider 48 horizontally, the cam groove 48c moves horizontally. As a result, the driven pin 7b of the elevating frame 7 shifts from the lower position portion 48c-1 to the inclined portion 48c-2 and rises, and the elevating frame 7 starts to rise as shown in FIG.

  15 and 22 show a final state in which the clamp head 9 clamps the center hole D1a of the large-diameter disk D1, and the large-diameter disk D1 can be driven. To reach this state, the disk support arm 19, supporting the large-diameter disk D1, the loading arm 22, and the guide arm 27 are slightly swung in the centrifugal direction to end the support of the disk. It must be ensured that it does not interfere with rotation.

  That is, at the position where the loading slider 43 is further retracted and stopped from the state shown in FIG. 14, the driven pin 24a of the link lever 24 is pushed into the lateral groove at the rear end of the guide slit 49a at the eccentric portion of the rear portion of the guide groove 43d. Therefore, as shown in FIG. 41D, the link lever 24 slightly returns in the direction opposite to the pulling direction, and the loading arm 22 slightly swings in the centrifugal direction, and the large-diameter disk D1 by the loading roller 22a. The support of the outer peripheral edge of is finished.

  At the same time, the driven pin 45a of the first swing member 45 is slightly swung by the inclined portion formed in the middle of the vertical portion 43b-3 of the guide groove 43b. Is transmitted to the gear disk 59 via As a result, the disk support arm 19 is slightly swung in the centrifugal direction, and the support of the outer peripheral edge of the large-diameter disk D1 by the disk support arm 19 is finished.

  On the other hand, the lower end horizontal portion 43b-2 of the guide groove 43b of the loading slider 43 greatly pushes up the driven pin 47a of the second swing member 47. As a result, the action pin 47b swings in the centrifugal direction, the driven slider 48 moves horizontally, and the end through hole 48b pulls the action pin 51a of the third swing member 51. Is slightly swung, and at the same time, the action piece 48d pushes up the roller 42c of the lever arm 42. As a result, the locking tongue piece 42a of the lever arm 42 with which the support member 27a of the guide arm 27 abuts retreats, so that the guide arm 27 slightly swings in the centrifugal direction, and the large-diameter disk by the guide arm 27 The support of the outer peripheral edge of D1 is finished.

  At this time, the end of the guide groove 43c-1 of the loading slider 43 presses the driven pin 29d of the guide arm 29, so that the guide arm 29 slightly swings. As a result, the support member 29a of the guide arm 29 swings in the centrifugal direction, and the positioning of the outer peripheral edge of the large-diameter disk D1 is completed. Further, when the guide arm 35 connected by the follower pin 35b of the guide arm 29 is slightly swung, the support member 35a is also swung in the centrifugal direction to position the outer peripheral edge of the large-diameter disk D1. finish.

  In the process from FIG. 14 to FIG. 15, the driven slider 48 moves horizontally in synchronization with the backward movement of the loading slider 43, but the driven pin 7 a of the elevating frame 7 is inclined portion 43 e − of the cam groove 43 e of the loading slider 43. 2 to the high position portion 43e-3, and the driven pin 7b moves from the inclined portion 48c-2 of the cam groove 48c of the driven slider 48 to the high position portion 48c-3.

  In this process, the lift frame 7 is lifted by the driven pins 7a and 7b that are lifted by the inclined portions 43e-2 and 48c-2, and the chuck claw of the clamp head 9 as shown in FIG. 9a contacts the center hole D1a of the large-diameter disk D1 to push up the large-diameter disk D1, and the peripheral edge of the center hole D1a contacts the convex part 2b of the chassis case 2.

  When the driven pins 7a and 7b reach the tops of the inclined portions 43e-2 and 48c-2 from the above state, the clamp head 9 is fitted into the center hole D1a of the large-diameter disk D1 as shown in FIG. Clamping with the claw 9a is completed, and the large-diameter disk D1 is fixed on the turntable 10. Then, when the driven pins 7a and 7b are moved to the high positions 43e-3 and 48c-3, the elevating frame 7 is lowered to the position shown in FIG. 37 (E), and the large-diameter disk D1 can be driven.

  The operation mode of each mechanism at the time of loading the large-diameter disk D1 by the disk device 1 of the present invention has been described above. At the time of unloading, each mechanism moves in the reverse order to the above-described loading time as the loading slider 43 advances. It becomes an operation mode. That is, when unloading of the large-diameter disk D1 is started and the loading slider 43 starts moving forward, the elevating frame 7 is once raised and then lowered to the initial position as shown in FIGS. 38 (A) to (E). During this time, the large-diameter disk D1 is pushed up by the clamp release pin 71 as shown in FIG. 38C, and the clamp by the clamp head 9 is released.

  In the process until the clamp of the large-diameter disk D1 is released as described above, the disk support arm 19, the loading arm 22, and the guide arm 27 start to move in the centripetal direction, and the outer peripheral edge of the large-diameter disk D1 is moved. The supported state is shown in FIG. 14, and thereafter, the large-diameter disk D1 is unloaded by the force of the disk support arm 19 swinging in the centripetal direction, and its front end is exposed from the slot 3a of the front bezel 3 and stopped.

  42 (A) to 42 (F) show the operation modes of the driven pins 24a, 29d, 45a, and 47a as the loading slider 43 moves backward.

  Next, an operation mode when the small-diameter disk D2 is conveyed by the disk apparatus of the present invention will be described with reference to plan views of FIGS. 23 to 29 and corresponding bottom views of FIGS. 30 to 36. FIG. In FIG. 23 to FIG. 29, the cam grooves 43e and 48c and the driven pins 7a and 7b are not originally shown in FIG. 23, but are illustrated for convenience of explanation and easy to understand.

  23 and 30 show a state in which the small-diameter disk D2 is waiting to be inserted from the slot 3a of the front bezel 3, and each arm is stationary in the initial state. At this time, the guide arm 25 has a large diameter portion 64a of the roller 64 of the roller support plate 62 fixed to the pivot pin 26 on the back surface of the base panel 6 so that the rack slider 65 can be moved as shown in FIGS. The guide arm 25 is in contact with the low-level guide piece 65b, and is stopped at a position where the guide arm 25 is swung in the centrifugal direction by a predetermined amount from a position where it is most swung in the centripetal direction.

  This is because when the guide arm 25 stops at the position where it is most swung in the centripetal direction and waits for the insertion of the disk, when the small diameter disk D2 is inserted toward the left side of the apparatus, the small diameter disk D2 is supported by the support member. In order to prevent the small-diameter disk D2 from being transported on the left side of 25a, the guide arm 25 is stopped at a position where the guide arm 25 is swung in the centrifugal direction by a predetermined amount from the position where it is most swung in the centripetal direction. And waiting for the disc to be inserted. Note that the state waiting for the small-diameter disk D2 shown in FIGS. 23 and 30 corresponds to the state waiting for the large-diameter disk D1 shown in FIGS.

  Next, since the base end portion of the guide arm 27 is urged by the tension coil spring 53, a force that the tip support member 27a swings in the centripetal direction always works, but is connected to the pivot pin 27b. The third swing member 51 is stationary at a fixed position, and the guide arm 27 is stationary in the state shown in FIG. This is because the link wire 52 attached between the first swing member 45 and the action pin 51a of the third swing member 51 in a stationary state functions as a stopper, and the third swing member 51 swings. By preventing movement.

  Similarly, the disk support arm 19, guide arm 29, guide arm 35, and loading arm 22 to which power is transmitted as the loading slider 43 moves are also stationary in the state shown in FIG. The driven pin 7a of the elevating frame 7 guided by the cam groove 43e of the loading slider 43 is in the lower portion 43e-1 of the cam groove 43e, while the elevating frame guided by the cam groove 48c of the driven slider 48. 7, the driven pin 7b is located at the lower portion 48c-1 of the cam groove 48c, so that the elevating frame 7 is in the most lowered state as shown in FIG.

  24 and 31 show a state where the small-diameter disk D2 is inserted from the slot 3a of the front bezel 3 by the operator, and the front end side of the small-diameter disk D2 is in contact with the holder 21 of the disk support arm 19. FIG. When the small-diameter disk D2 is biased to the left in FIG. 24 when the small-diameter disk D2 is inserted into the slot 3a at this time, the left end portion of the front end of the small-diameter disk D2 contacts the support member 25a of the guide arm 25 and is pushed back. Therefore, it is possible to prevent the small-diameter disk D2 from coming off the conveyance path.

  Further, when the small diameter disk D2 is inserted, when the right end portion of the small diameter disk D2 presses the support member 29a of the guide arm 29 and swings in the centrifugal direction as shown in FIG. As shown in B), since the tongue piece 29b is locked by the angle 37a of the lock lever 37 which is stationary at a fixed position without swinging, the small-diameter disk D2 is prevented from coming off from the conveying path in this case as well. Can do. That is, the small-diameter disk D2 is guided by the support member 25a of the guide arm 25 and the support member 29a of the guide arm 29 and guided to the center of the apparatus.

  25 and 32 show a state in which the small-diameter disk D2 is further inserted from the above state by the operator, and the disk support arm 19 is swung in the centrifugal direction by being pressed by the small-diameter disk D2. The support member 25a of the guide arm 25 and the support member 29a of the guide arm 29 that are interlocked with the swinging of the support arm 19 are in contact with the side portion of the small-diameter disk D2. As a result, the small-diameter disk D2 is supported at the three points of the support members 25a and 29a and the holder 21 of the disk support arm 19.

  Further, the base of the disk support arm 19 rotates from the position of FIG. 39A to the position of FIG. 39B with the rivet pin 20 as a fulcrum, and the limit switch 60 is actuated by the switch starting step 59e of the gear disk 59. The A low potential current flows through the loading motor 66 based on a signal from the limit switch 60 operated by the switch starting stage 59e. At this time, the component force F1a due to the pressing of the support member 29a of the guide arm 29 and the component force F1b due to the pressing of the tension coil spring 63 of the support member 25a of the guide arm 25 are in a large state, so the small-diameter disk D2 is loaded. A resultant force F2 propelled in the direction is generated, and automatic loading by the loading motor 66 is started.

  26 and 33 show a state where the automatic loading by the loading motor 66 is started and the small-diameter disk D2 is loaded. When the loading slider 43 is further retracted from the state of FIG. 25, the driven pin 29d of the guide arm 29 enters the guide groove 43c-2 of the loading slider 43. At this time, the support member 29d is guided by the inclined portion of the guide groove 43c-2 and moved by the inclination distance, and the support member 29a swings to the position shown in the figure while carrying the small-diameter disk D2. At this time, the guide arm 25 also swings to the position shown in the figure while carrying the small-diameter disk D2 by the action of the tension coil spring 63. At this time, the gear disk 59 at the base of the disk support arm 19 rotates to the position shown in FIG. 39C, so that the switch knob 60a of the limit switch 60 is reversed by the switch starting step 59f and flows to the loading motor 66. The current switches to a high potential.

  When the loading slider 43 moves back to the position shown in FIG. 26, the upper horizontal portion 43b-1 of the guide groove 43b pushes up the driven pin 45a of the first swing member 45, and the rivet pin 44 serves as a fulcrum. The first swing member 45 is swung, and the gear disk 59 is rotated via the link arm 54. As a result, the disk support arm 19 swings in the centrifugal direction, that is, the holder 21 supporting the rear end of the small diameter disk D2 moves backward in synchronization with the loading of the small diameter disk D2. At this time, since the driven pin 47a of the second swing member 47 is in a state of sliding along the vertical portion of the guide groove 43b, the second swing member 47 is stationary, and the driven slider 48 is also It is in a stationary state.

  Therefore, as the first swing member 45 swings, the third swing member 51 swings due to the action of the tension coil spring 53, so that the guide arm 27 swings around the rivet pin 28 as a fulcrum and its support member 27a. Comes into contact with the small-diameter disk D2. At this time, the driven pin 7a of the elevating frame 7 is in a state of laterally moving the lower portion 43e-1 of the cam groove 43e, and the driven slider 48 is stationary, so that the elevating frame 7 is still in FIG. ) Position.

  27 and 34 show a state where the loading slider 43 is further retracted from the state shown in FIGS. 26 and 33 and the small-diameter disk D2 is being carried in, and the guide arm 29 stops swinging. The disc support arm 19 swings in the centrifugal direction and the guide arms 25 and 27 swing in the centripetal direction according to the amount of movement of the loading slider 43 to support the small-diameter disc D2.

  28 and 35 show a state in which the loading slider 43 is further retracted from the states of FIGS. 27 and 34 and the center of the center hole D2a of the small-diameter disk D2 and the center of the clamp head 9 coincide with each other and stop. In the process of reaching this state, as the loading slider 43 moves backward, the disk support arm 19 largely swings in the centrifugal direction to finish supporting the outer peripheral edge of the small-diameter disk D2, and this swing causes the gear disk 59 to be racked. The slider 65 is advanced. As a result, the small-diameter portion 64b of the double roller 64 rides on the high-order guide piece 65c of the rack slider 65, so that the guide arm 25 swings greatly in the centrifugal direction, and the support of the outer peripheral edge of the small-diameter disk D2 is completed. As a result, the guide arm 25 is retracted to the side of the lifting frame 7 and does not extend on the lifting frame 7.

  In this state, the outer peripheral edge of the small-diameter disk D2 is supported at three points: the support member 27a of the guide arm 27, the support member 29a of the guide arm 29, and the support member 35a of the guide arm 35. In the process, the pressing force due to the action of the tension coil spring 53 of the support member 27a of the guide arm 27 works, and the carry-in of the small-diameter disk D2 is continued.

  Further, in the process from FIG. 27 to FIG. 28, the cam pin 43a of the loading slider 43 is retracted, and the driven pin 7a of the elevating frame 7 is moved from the lower position part 43e-1 to the inclined part 43e-2 and rises. Become. On the other hand, the driven pin 47a of the second swing member 47 reaches the lower end horizontal portion 43b-2 from the vertical portion 43b-3 of the loading slider 43, and the second swing member 47 swings in the centrifugal direction. As the slider 47b moves the driven slider 48 horizontally, the cam groove 48c moves horizontally. As a result, the driven pin 7b of the elevating frame 7 shifts from the lower position portion 48c-1 to the inclined portion 48c-2 and rises, and the elevating frame 7 starts to rise as shown in FIG.

  FIGS. 29 and 36 show a final state in which the clamp head 9 clamps the center hole D2a of the small-diameter disk D2 and the small-diameter disk D2 can be driven. In order to reach this state, the guide arms 27, 29, and 35 must swing so that the support of the small-diameter disk D2 is finished, so that the rotation of the small-diameter disk D2 is not hindered.

  That is, at the position where the loading slider 43 is further retracted and stopped from the state of FIG. 28, the driven pin 47a is pushed up by the lower end horizontal portion 43b-2, and the second swing member 47 swings in the centrifugal direction. As a result, the action pin 51a connected to the end through hole 48b of the driven slider 48 is pulled, and the third swing member 51 swings in the centripetal direction, thereby swinging the guide arm 27 in the centrifugal direction. The support of the small-diameter disk D2 is finished.

  On the other hand, the guide arm 29 swings slightly in the centrifugal direction because the driven pin 29d reaches the inclined portion at the end of the guide groove 43c-2 of the loading slider 43, and ends the support of the small-diameter disk D2 by the support member 29a. . Further, the swing of the guide arm 29 causes the driven pin 35b connected to the guide groove 29c to act, so that the guide arm 35 slightly swings in the centrifugal direction, and the support of the small diameter disk D2 is finished.

  In the process from FIG. 28 to FIG. 29, the driven slider 48 moves horizontally in synchronism with the backward movement of the loading slider 43, but the driven pin 7 a of the elevating frame 7 is inclined portion 43 e − of the cam groove 43 e of the loading slider 43. 2 to the high position portion 43e-3, and the driven pin 7b moves from the inclined portion 48c-2 of the cam groove 48c of the driven slider 48 to the high position portion 48c-3.

  In this process, the lift frame 7 is lifted by the driven pins 7a and 7b that are lifted by the inclined portions 43e-2 and 48c-2, and the chuck claw of the clamp head 9 as shown in FIG. 9a contacts the center hole D2a of the small diameter disk D2 to push up the small diameter disk D2, and the peripheral edge of the center hole D2a contacts the convex portion 2b of the chassis case 2.

  When the driven pins 7a and 7b reach the tops of the inclined portions 43e-2 and 48c-2 from the above state, the clamp head 9 is inserted into the center hole D2a of the small-diameter disk D2 as shown in FIG. The clamping by 9a is completed, and the small-diameter disk D2 is fixed on the turntable 10. Then, when the driven pins 7a and 7b are moved to the high positions 43e-3 and 48c-3, the elevating frame 7 is lowered to the position shown in FIG. 37E, and the small-diameter disk D2 can be driven.

  The operation mode of each mechanism at the time of loading the small-diameter disk D2 by the disk device 1 of the present invention has been described. However, at the time of unloading, each mechanism operates in the reverse order to the above-described loading time as the loading slider 43 advances. It becomes an aspect. That is, when unloading of the small-diameter disk D2 is started and the loading slider 43 starts moving forward, the elevating frame 7 is once raised and then lowered to the initial position as shown in FIGS. 38 (A) to (E). During this time, the small-diameter disk D2 is pushed up by the clamp release pin 71 as shown in FIG. 38C, and the clamp by the clamp head 9 is released.

  In the process until the clamp of the small-diameter disk D2 is released as described above, the guide arms 25, 27, and 29 swing in the centripetal direction to support the outer peripheral edge of the small-diameter disk D2, and continue. 27 to 24, the small-diameter disk D2 is unloaded by the force swinging in the centripetal direction of the disk support arm 19, and the front end thereof is exposed from the slot 3a of the front bezel 3 and stopped.

  As described above, the slot-in type disk apparatus 1 of the present invention supports the three outer peripheral edges of the large-diameter disk D1 and the small-diameter disk D2 by a plurality of arms that are operated in synchronization with the forward and backward movements of the loading slider 43. With this configuration, it is possible to automatically load disks having different diameters in the loading method in which the arm is swung.

  Next, as described above as a subject of the present invention, a configuration in which the mechanical load applied to the guide arm is reduced and the cause of failure is eliminated will be described below. As described above, the disk device 1 to which the present invention is applied is capable of automatically loading and driving a 12 cm large-diameter disk D1 and an 8 cm small-diameter disk D2, but from the slot 3a of the front bezel 3. In particular, when the small-diameter disk D2 is inserted, the mechanical load concentrates on the tip portion provided with the support member 29a of the guide arm 29 that also serves to regulate the lateral position of the small-diameter disk D2.

  24, when the small-diameter disk D2 is inserted from the slot 3a of the front bezel 3 and the small-diameter disk D2 is biased leftward in FIG. 24, the left end portion of the front end of the small-diameter disk D2 is the guide arm. Since the small-diameter disk D2 is pushed back in contact with the 25 support members 25a, it is possible to prevent the small-diameter disk D2 from coming off the transport path.

  On the other hand, when the right end portion of the front end of the small-diameter disk D2 presses the support member 29a of the guide arm 29 as shown in FIG. 43A and swings in the centrifugal direction, the tongue piece as shown in FIG. Since 29b is locked by the angle 37a of the lock lever 37 which is stationary at a fixed position without swinging, it is possible to prevent the small-diameter disk D2 from coming off the transport path in this case as well.

  However, this configuration forcibly prevents the guide arm 29 from swinging in the centrifugal direction at the angle 37a of the lock lever 37, and is not configured to be elastically supported. Therefore, when the support member 29 a of the guide arm 29 is pressed by inserting the small-diameter disk D 2, a mechanical load is generated when the tongue piece 29 b contacts the angle 37 a of the lock lever 37.

  Since this mechanical load is generated in a portion where the tongue piece 29b and the angle 37a are in a point contact state, a large impact is concentrated on this portion. The mechanical load generated in this way is transmitted to each mechanism connected thereto via the guide arm 29 and the angle 37. By repeatedly receiving the influence of such a mechanical load, an accuracy error in the mechanism is generated, which causes a failure such that automatic loading cannot be performed accurately.

  Since such a problem occurs, in the present invention, when the small-diameter disk D2 is inserted, the small-diameter disk D2 is buffered and supported so that no mechanical load is generated on the guide arm 29. FIG. As shown, the lock lever 37 was not adopted. However, the guide arm 29 must have a function of regulating the lateral position of the small-diameter disk D2 so that the small-diameter disk D2 is not removed from the transport path when the small-diameter disk D2 is inserted from the slot 3a.

  Therefore, in order to realize such a function without adopting the lock lever 37, an urging force capable of preventing the small-diameter disk D2 from coming off the conveyance path is applied to the guide arm 29 so as to buffer and support the small-diameter disk D2. . However, in order not to hinder the smooth operation of the guide arm 29 and the mechanisms connected thereto, the urging force applied to the guide arm 29 must be increased within a necessary range when the small-diameter disk D2 is inserted. .

  FIG. 44 shows the configuration of the present invention based on such conditions. In the present invention, the tension coil spring 31 of the link lever 33 that biases the guide arm 29 is eliminated, and the torsion spring 81 is employed. Further, a pin 29 f is provided on the guide arm 29, and this pin 29 f is loosely fitted in the groove 33 c of the link lever 33. FIG. 45 is an enlarged view of the configuration of the guide arm 29, the link lever 33, and the torsion spring 81. In FIG. 45, the torsion spring 81 has an annular portion attached to a rivet pin 82 erected on the chassis case 2. One arm 81 a is locked to a stopper 2 c formed on the chassis case 2, while the other arm 81 b is locked to a locking claw 33 b at the rear end of the link lever 33. The arm 81b is not fixed to the rear end portion of the link lever 33 but needs to be slidably locked.

  Therefore, the urging force Fa acting to rotate the link lever 33 due to the elasticity of the torsion spring 81 is transmitted as the urging force Fb acting to rotate the guide arm 29, and the tip of the guide arm 29 is directed toward the centripetal direction. Appears as power Fc. The magnitude of the biasing force Fa is proportional to the torque Ts of the torsion spring 81, the biasing force Fb is proportional to the torque Tm generated at the link lever 33 around the rivet pin 32, and the biasing force Fc is centered at the rivet pin 30. It is proportional to the torque Ta generated in the guide arm 29. Since the groove 33c of the link lever 33 is locked by the pin 29f of the guide arm 29, the guide arm 29 is stationary in the state shown in FIG.

  The torque Tm and torque Ta generated in the above configuration can be obtained by applying general mechanics formulas. That is, when the length from the rotation axis to the force application point is R, the magnitude of the force is F, and the angle formed by the force with respect to the length direction is not considered, the torque T is obtained by T = R · F. be able to. Therefore, when the torque Tm is obtained based on this formula, Tm = (Ts / Rs) Rma. Here, Ts is the torque by the torsion spring 81, and Rs indicates the length from the center of the torsion spring 81 to the tip locking portion of the arm 81b. Rma indicates the length from the tip locking portion of the arm 81 b of the torsion spring 81 to the center of the rivet pin 32.

  Since the torque Tm is obtained in this way, the torque Ta can be obtained by Ta = (Tm / Rmb) Ra = (Rma · Ra / Rmb · Rs) Ts. Here, Rmb indicates the length from the center of the rivet pin 32 to the pin 29f, and Ra indicates the length from the center of the pin 29f to the center of the rivet pin 30. By the way, if the length from the center of the rivet pin 30 of the guide arm 29 to the support member 29a at the tip is d, this length is constant, and the torque Ta is Ta = d · Fc. Therefore, Fc = Ta / d holds, and the urging force Fc changes in synchronization with the torque Ta.

  FIG. 47 schematically shows changes in lengths Rma, Ra, Rmb, and Rs corresponding to the states shown in FIGS. 46 (A), 46 (B), and 46 (C), and plot positions in each column. Indicates the length of each of the lengths Rma, Ra, Rmb, and Rs. Therefore, when the lengths of the lengths Rma, Ra, Rmb, and Rs are applied to an equation for obtaining the torque Ta, Ta = (Rma · Ra / Rmb · Rs) Ts, the state shown in FIG. The torque Ta gradually increases toward the state B), and the torque Ta becomes maximum in the state shown in FIG. 46B, that is, approximately in the middle of the swinging range of the guide arm 29, whereby the biasing force Fc is also maximum. It becomes. Then, the torque Ta gradually decreases from the state of FIG. 46 (B) toward the state of FIG. 46 (C). Since the denominator (Rmb, Rs) changes against the change of the numerator (Rma, Ra) in the above formula in the swing range of the guide arm 29, the change of the torque Ta becomes steep.

  With this configuration, when the guide arm 29 is in the initial state as shown in FIG. 46A, the urging force Fc at the tip thereof is relatively small, and from this state, the guide arm 29 moves in the centrifugal direction. As shown in FIG. 46 (B), the urging force Fc becomes the largest at approximately the middle of the oscillating range of the guide arm 29, and this increased urging force Fc. Thus, the lateral position of the small-diameter disk D2 can be regulated.

  That is, as shown in FIG. 48, the small-diameter disk D2 is inserted while being biased to the right of the slot 3a of the front bezel 3, and the guide arm 29 moves in the centrifugal direction from the initial position indicated by the phantom line by the force Fd that the small-diameter disk D2 enters. When swinging, the urging force Fc of the guide arm 29 increases, and the force that pushes back the small-diameter disk D2 is generated. As a result, a resultant force Fcd with the force Fd that enters the small-diameter disk D2 is generated. Or when the entering force Fd is small, it is pushed back in the carrying-out direction.

  As described above, since the guide arm 29 has a configuration in which the urging force Fc is the largest in the middle of the swing range, the elasticity of the torsion spring 81 is not increased more than necessary, and the lateral direction of the small-diameter disk D2 is increased. A function for regulating the position and a buffer function for the disk can be obtained. Since the guide when the guide disk 29 is inserted in the slot 3a of the large-diameter disk D1 as well as the small-diameter disk D2 can be realized with a simple configuration, the lead wire 41 and the lock lever 37 interlocked therewith, etc. All the mechanical elements are no longer necessary, and it is possible to prevent the generation of a mechanical load and to reduce the manufacturing cost.

  When the large-diameter disk D1 is inserted from the slot 3a in the configuration of the present invention, the large-diameter disk D1 enters the position shown in FIG. 11 by the insertion operation by the operator, so that the state shown in FIG. Since the guide arm 29 is swung and the subsequent automatic loading process proceeds from FIG. 46 (B) to FIG. 46 (C), the urging force Fc decreases and does not become a load of the transport operation. Further, when the large-diameter disk D1 is unloaded, the unloading operation is completed before the urging force Fc is increased.

1 is a perspective view of a slot-in type disk device embodying the present invention. FIG. 2 is a perspective view showing an internal configuration of the disk device of FIG. 1. It is a perspective view which shows the structure of the drive mechanism of the disc apparatus of FIG. It is a disassembled perspective view which shows the structure of a loading slider. It is a disassembled perspective view which shows the structure of a loading slider and a guide plate. It is a disassembled perspective view which shows the structure of a power transmission mechanism. It is a disassembled perspective view which shows the structure of a gear disk. It is a perspective view which shows the structure of a rack slider. It is the 1st stroke figure explaining the conveyance state of a large diameter disk. It is the 2nd stroke figure explaining the conveyance state of a large diameter disk. It is a 3rd stroke figure explaining the conveyance state of a large diameter disc. It is the 4th stroke figure explaining the conveyance state of a large diameter disk. It is the 5th stroke figure explaining the conveyance state of a large diameter disk. It is the 6th stroke figure explaining the conveyance state of a large diameter disk. It is a 7th process figure explaining the conveyance state of a large diameter disc. It is the 1st stroke figure explaining the conveyance state of a large diameter disk. It is the 2nd stroke figure explaining the conveyance state of a large diameter disk. It is a 3rd stroke figure explaining the conveyance state of a large diameter disc. It is the 4th stroke figure explaining the conveyance state of a large diameter disk. It is the 5th stroke figure explaining the conveyance state of a large diameter disk. It is the 6th stroke figure explaining the conveyance state of a large diameter disk. It is a 7th process figure explaining the conveyance state of a large diameter disc. It is the 1st stroke figure explaining the conveyance state of a small diameter disk. It is the 2nd stroke figure explaining the conveyance state of a small diameter disk. It is a 3rd stroke figure explaining the conveyance state of a small diameter disc. It is the 4th stroke figure explaining the conveyance state of a small diameter disk. It is a 5th process figure explaining the conveyance state of a small diameter disc. It is the 6th stroke figure explaining the conveyance state of a small diameter disk. It is a 7th process figure explaining the conveyance state of a small diameter disc. It is the 1st stroke figure explaining the conveyance state of a small diameter disk. It is the 2nd stroke figure explaining the conveyance state of a small diameter disk. It is a 3rd stroke figure explaining the conveyance state of a small diameter disc. It is the 4th stroke figure explaining the conveyance state of a small diameter disk. It is a 5th process figure explaining the conveyance state of a small diameter disc. It is the 6th stroke figure explaining the conveyance state of a small diameter disk. It is a 7th process figure explaining the conveyance state of a small diameter disc. It is a stroke diagram explaining the stroke which a raising / lowering frame raises. It is a process figure explaining the process which a raising / lowering frame processes. It is a figure for demonstrating the operation | movement aspect of a gear disc. It is a stroke diagram explaining the operation | movement aspect of the arm at the time of conveyance of a large diameter disc. It is a flowchart explaining the operation | movement aspect of a loading arm. It is a stroke diagram explaining the operation | movement aspect of a loading slider and a follower pin. It is a stroke diagram which shows the state in which a lock lever functions. It is a figure explaining the structure of this invention. It is a principal part enlarged view of this invention. It is a figure explaining the function of this invention. It is a figure explaining the generation | occurrence | production state of the torque in the mechanism of this invention. It is a figure explaining the effect | action of this invention. It is a top view which shows the conventional disc apparatus. It is a top view which shows the conventional disc apparatus.

Explanation of symbols

1 ..... Disk device 2 ..... Chassis case 3 ... Front bezel 6 ...... Base panel 7 ..... Elevating frame 8 ······ Buffer support structure 9 ··········· Clamp head 10 ······ Turntable 11 ··· Spindle motor 12 ··· Optical pickup 13 ···・ ・ ・ ・ ・ Carrier block 14 ・ ・ ・ ・ ・ ・ Guide shaft 15 ・ ・ ・ ・ ・ ・ Guide shaft 16 ・ ・ ・ ・ ・ ・ Thread motor 17 ・ ・ ・ ・ ・ ・ Gear train 18 ・ ・ ・ ・ ・ ・Screw shaft 19 ... Disk support arm 21 ... Holder 22 ... Loading arm 24 ... Link lever 25 ... Guide arm 27 ... .... Guide A 29 ··· Guide arm 31 ··· Tension coil spring 33 ··· Link lever 35 ··· Guide arm 37 · · · Lock lever 39 ···・ ・ Wire spring 40 ・ ・ ・ ・ ・ ・ Stopper 41 ・ ・ ・ ・ ・ ・ Lead wire 42 ・ ・ ・ ・ ・ ・ Lever arm 43 ・ ・ ・ ・ ・ ・ Loading slider 45 ・ ・ ・ ・ ・ ・ First swing Member 47... Second swing member 48... Followed slider 49... Guide plate 51. Link wire 53... Tension coil spring 54... Link arm 55... Connecting member 56... Tension coil spring 59. .... Limit switch 62・ ・ ・ ・ ・ Roller support plate 63 ・ ・ ・ ・ ・ ・ Tension coil spring 64 ・ ・ ・ ・ ・ ・ Double roller 65 ・ ・ ・ ・ ・ ・ Rack slider 66 ・ ・ ・ ・ ・ ・ Loading motor 67 ・ ・ ・ ・ ・・ Worm gear 71 ・ ・ ・ ・ ・ ・ Clamp release pin 81 ・ ・ ・ ・ ・ ・ Torsion spring D1 ・ ・ ・ ・ ・ ・ Large-diameter disk D2 ・ ・ ・ ・ ・ ・ Small-diameter disk

Claims (2)

A disk inserted by automatic loading by a plurality of arms that supports the outer peripheral edges of two types of disks having different diameters and can be transported is carried into the apparatus, or a disk accommodated in the apparatus is loaded into the apparatus. A disk unit that is designed to be carried out to the outside.
A biasing force is applied to the guide arm that also serves to regulate the lateral position of the small-diameter disk inserted from the slot so that the tip always moves in the centripetal direction, and the biasing force is an approximate value of the swing range of the tip of the guide arm. A disk device characterized by being maximized in the middle.   2. The disk apparatus according to claim 1, wherein the guide arm is connected to one end of the link lever, and the other end of the link lever is biased by a torsion spring.

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