JPH0449183B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a tray sliding mechanism of a disk player that slides a tray on which a disk is mounted.
In particular, the present invention relates to a tray sliding mechanism for a disc player suitable for use in an autochanger device that automatically replaces discs to be played.

(b) Prior Art Recently, optical disc players have become popular, which use optical pickup to read out signals from discs on which signals have been recorded. As the disc player, a CD player is known that plays a compact disc (CD) having protrusions called pits formed on the signal surface corresponding to digital signals serving as music information. For example, as shown in Japanese Patent Application Laid-Open No. 59-135650, the CD player has a disc loading/unloading position where the tray is pushed forward from the housing by a motor drive, and a center hole of the CD when the CD is housed in the housing. The mainstream is the front-loading type, in which the CD is slid between the tray and a standby position located above the table, and when the tray comes to the standby position, the CD is clamped on the turntable and played. . The front-loading CD player has a tray that is driven by a motor and slides by operating an opening/closing button, so it has excellent operability and a luxurious feel.

By the way, the CD to be played is automatically changed,
Autochanger devices that can play multiple CDs continuously are known. As disclosed in, for example, Japanese Patent Application Laid-Open No. 60-52950, the autochanger device is such that a tray containing CDs is installed in advance in a disc storage section, and the disc storage section is manually set at a predetermined position. This is a so-called cartridge type. Therefore, a front loading type autochanger device was desired.

(c) Problems to be solved by the invention However, the front loading method
The CD player has a tray that allows the CD to be loaded or unloaded when the tray is slid to the disc loading/unloading position.
The center hole of the CD is designed so that the tray on which the CD is placed protrudes forward from the housing, and the center hole of the CD is aligned with the axis of the turntable so that the CD can be clamped onto the turntable when the tray is slid to the standby position. Because of the need for upward displacement, the trays are long and are not particularly suitable for use in autochanger equipment. That is, as shown in the above-mentioned Japanese Patent Application Laid-open No. 60-52950, the autochanger device stores and holds a disk in a disk storage case, and the disk storage case is inserted into the disk storage section so that it can be raised and lowered. After the disc storage case is pulled out from the disc storage section using a pull-out mechanism that is slidably supported by the supported transport standby, the transport mechanism is lowered and the disc is moved to a player section where the disc is played. There are many such automatic changer devices,
Since the size of the disk storage case is directly reflected in the size of the housing, it is not preferable to use the above-mentioned tray as the disk storage case to achieve a front loading type autochanger device. However, if you simply shorten the length of the tray, the amount of sliding of the tray will decrease, the amount of protrusion of the tray from the housing and the amount of insertion of the tray into the housing will decrease, making it difficult to insert and remove a CD. It becomes difficult to carry out the process, and the position where the turntable and optical pickup are installed is limited to a position close to the front panel, making it difficult to produce a product.

The present invention aims to provide a tray sliding mechanism for a disk player, which is made in view of the above-mentioned points.

(d) Means for Solving the Problems The present invention provides a mechanism for changing the pinion gear meshed with the rack provided for sliding the tray from the first pinion gear to the second pinion gear according to the sliding position of the tray. By sequentially changing gears or from the second pinion gear to the first pinion gear, the tray can be slid to a standby position where the center hole of the disk is located on the axis of the turntable.

(e) Effect The present invention expands the sliding distance of the tray by driving the tray using first and second pinion gears without increasing the length of the rack for sliding the tray. It is.

(F) Embodiment FIGS. 1 to 5 show an autochanger device using a tray sliding mechanism for a disk player according to the present invention, and show a plan view, a front view, a right side view, a left side view, and a right side view, respectively. This is a cross-sectional view from the top, and in the figure, 1 is a compact disk.
A tray provided with a placing part 1a on which the CD2 is placed;
3 is a sliding mechanism that slides the tray horizontally; 4
is formed with guide grooves 5a and 6a that are engaged with the right and left side surfaces of the tray 1, respectively, and is fixed to the guide members 5 and 6 that support the tray 1 and the CD 2. A support body consisting of a clamp plate 8 clamped onto a turntable 7, 9 a lifting mechanism for raising and lowering the support body 4, and 10 a turntable 7 for rotating the CD 2.
and a player section equipped with an optical pickup 11 for reading signals recorded on the CD 2. The sliding mechanism 3 is fixed to the support body 4. Further, the elevating mechanism 9 and the player section 10 are attached to a base 12.

By the way, the tray 1 has a substantially V-shaped cut 1 that reaches a position facing the center hole 2a of the CD 2 from the front.
b is provided, and the notch 1b allows a finger to be hooked onto the front and center hole 2a of the CD 2 placed on the placement portion 1a of the tray 1.

Further, the tray 1 has a rack 13 formed on its right side, first to third grooves 14 to 16 on its left side, and a protrusion 17 formed on its rear right side. It is stored in a storage section 18 provided in front of 12. As shown in FIG. 2, the storage section 18 of the base 12 has support pieces 18a and 18 on the right and left sides, respectively, for supporting the tray 1.
b is formed, and a plurality of trays 1 are housed in a state in which they are slidably stacked at intervals from each other. A projection 19a is provided on the top plate 19 of the storage section 18 at the same position as the projection 17 of the tray 1.
When the tray 1 is housed in the tray 8, the protrusion 17 of the tray 1 and the protrusion 19a of the top plate 19 are vertically aligned on the same straight line.

The sliding mechanism 3 includes a motor 20 serving as a driving source, a first pulley 21 fixed to a rotating shaft 20a of the motor 20, and a second pulley to which rotation of the first pulley 21 is transmitted via a belt 22. 23, a first gear 24 integrally molded on the lower surface of the second pulley 23, and a second gear 2 meshing with the first gear 24.
5, a third gear 26 integrally molded on the upper surface of the second gear 25, and a fourth gear 27 serving as a first pinion gear that meshes with the third gear 26 and meshes with the rack 13 of the tray 1. A third pulley 28 provided on the upper surface of the fourth gear 27, a fourth pulley 30 to which the rotation of the third pulley 28 is transmitted via the belt 29, and a fourth pulley 30 provided on the lower surface of the fourth pulley 30. A fifth gear 31 serving as a second pinion gear is meshed with the rack 13 of the tray 1.
, the fifth gear 31 is attached and urged in the direction of arrow A by the spring 32, and the shaft 33
The first rotating member 33 is rotatable around a.
and is biased in the opposite direction of arrow A by spring 35,
It consists of a second rotating member 36 that is rotatable about a shaft 36a, and a pin 37 provided on the second rotating member 36 allows the third and fourth gears to be rotated independently of the movement of the fifth gear 31. It is composed of a belt tensioning mechanism 38 for keeping the tension of the belt 29 stretched between the pulleys 28 and 30 constant, and is attached to a base plate 39 that is movable up and down with respect to the base 12. .

The support body 4 includes a photocoupler 40 for disc detection, which is composed of a light emitting diode 40a attached to the clamp plate 8 and a photodiode 40b attached to the guide member 6, and a protrusion 17 of the tray 1 housed in the housing part 18 or a ceiling. A photocoupler 41 for detecting the tray position in which a light emitting diode 41a and a photodiode 41b are opposed to each other with the protrusion 19a of the plate 19 interposed therebetween is provided.
A chucking member 42 for chucking the CD 2 onto the turntable 7 is provided. and,
The support body 4 and the top plate 19 of the storage section 18 are connected to each other so that one end of the supporting body 4 and the top plate 19 of the storage section 18 are slidably fitted together, and the other end is pivotally supported.
3 to prevent the tray 1 stored above the support 4 from falling out of the storage section 18 due to an external impact when the support 4 is located below. , in tray 1
I'm trying to keep CD2 from falling out. Furthermore, at this time,
The tray 1 stored below the support body 4 is
The tongues 5b and 6b of the guide members 5 and 6 of the support body 4 prevent them from falling off.

The lifting mechanism 9 includes a motor 44 serving as a driving source, a fifth pulley 45 fixed to a rotating shaft 44a of the motor 44, and a sixth pulley 47 to which rotation of the fifth pulley 45 is transmitted via a belt 46. A worm gear 48 formed on the lower surface of the sixth pulley 47, a sixth gear 49 that meshes with the worm gear 48, a shaft 50 to which the sixth gear 49 is fixed, and a rotation of the sixth gear 49. The shaft 5
0, and has seventh and eighth gears 51 and 52 provided inside the right and left sides of the base 12, respectively, and a gear portion 53a that meshes with the seventh gear 51. The first rotating body 53 is connected to the tongue piece 5b integrally formed on the guide member 5 of No. 4.
a second rotating body 54 having a gear portion 54a meshing with the eighth gear 52; a connecting member 55 connecting the second rotating body 54 and the tongue piece 6b integrally molded on the guide member 6; The positional relationship between the second rotating body 54 and the connecting member 55 is adjusted, and the guide member 6
an adjustment screw 56 that matches the height of the other guide member 5, and first and second arms 57 and 58 supported by the base 12 and connected at the center and crossed in an X shape. It supports the support body 4 so as to be movable up and down. And the first
The arm 57 has one end supported by the base 12 and the other end slidably supported within an arc-shaped first groove 59 centered on the one end, and the second arm 58 has one end slidably supported in the vertical direction. The other end of the sliding mechanism 3 is slidably supported in a second groove 60 formed in the horizontal direction, and a spring 61 is stretched between the first and second arms 57 and 58. The attached substrate 39 is urged upward so that the sliding mechanism 3 is smoothly raised and lowered together with the support 4. The first groove 59 is formed in a metal plate 63 that is loosely fitted into the base 12, and the second groove 60 is integrally formed with the base 12.

By the way, as shown in FIG. 3, the base 12 has
Fourth or fifth gear 27 or 31 of sliding mechanism 3
Sliding holes 64 and 65 are bored in the portions facing the fourth and fifth gears 27 and 31, which are the first and second pinion gears, respectively, so that the gears mesh with the rack 13 formed on the tray 1. ing. In particular, the sliding holes 64 have holes corresponding to the number of trays 1 that can be stored in the storage section 18, and each hole of the sliding holes 64 has holes that correspond to the number of trays 1 that can be stored in the storage section 18. A rack 13 formed at 1 is visible. Next to the sliding hole 64, a first hole of the sliding mechanism 3 is provided corresponding to the position of each of the sliding holes 64.
A projection 33a (shown in FIG. 1) of the rotating member 33 is formed with an uneven surface 66, and when the sliding mechanism 3 moves up and down, the fifth gear 31 moves toward the tray 1.
The sliding mechanism 3 is engaged vertically with respect to the surface of the rack 13 to ensure engagement and to enable the sliding mechanism 3 to move up and down.

The base 12 also includes a support 4 and a sliding mechanism 3.
Guide holes 67 to 72 are drilled to serve as guides when moving up and down, and in particular, guide holes 67 to 69 drilled in the right side of the base 12 allow the substrate 39 to which the sliding mechanism 3 is attached to be inserted. It is also used for connecting and fixing to the support body 4.

Furthermore, as shown in FIG.
A locking mechanism 75 for locking is provided. The first flap 73 is pivotally supported by bearings 76a and 76b formed on the base 12, and is supported by a spring 7.
7 so as to contact the left side surface of the base 12, and the tongue piece 73a provided on the first flap 73 is brought into contact with the movable contact piece 78a of the first switch 78 for position detection. ing. The first flap 73 has a projection 73b corresponding to each of the plurality of trays 1 stored in the storage section 18.
is formed, and when the tray 1 is stored in the storage section 18, the projection 73b passes through a hole bored in a portion of the base 12 facing the projection 73b, as shown in FIG. The first groove 14 of the tray 1
has been incorporated into. Further, the second flap 74 is supported by bearings 79a and 79b formed on the base 12, is biased by a spring 80 so as to come into contact with the left side surface of the base 12, and is provided on the second flap 74. The pressed tongue piece 74a is in contact with the movable contact piece 81a of the second switch 81 for position detection. A protrusion 74b is formed on the second flap 74 in correspondence with each of the plurality of trays 1 stored in the storage section 18.
4b passes through a hole (not shown) formed in a portion of the base 12 opposite to the protrusion 74b when the tray 1 is stored in the storage portion 18, and the tray 1 is inserted into the storage portion 18.
It is fitted into the second groove 15 of. Furthermore, the locking mechanism 75 has a plurality of arms 82 corresponding to each of the plurality of trays 1 stored in the storage section 18, and the ends of the plurality of arms 82 are each provided with a bearing 83a and a bearing 83a, respectively. It is supported by a pin 84 which is supported by a pin 83b, and is urged by a leaf spring 85 so as to come into contact with the left side surface of the base 12. First and second protrusions 82a and 82b are formed on the arm 82, respectively.
The first protrusion 82a of the base 12 when the tray 1 is stored in the storage section 18.
The arm 82 is fitted into the third groove 16 of the tray 1 through a hole 86 bored in a portion opposite to the arm 82 . By coming into contact with the second projection 82b of the arm 82 through the hole 99 bored in the base 12, the arm 82 is rotated against the biasing force of the leaf spring 85, and the first projection 82a of the arm 82 is rotated. Said third groove 1
Since it is made to be removed from the support body 4
The first protrusion 82a of the arm 82, which was fitted into the third groove 16 of the tray 1 whose height corresponds to the height of , is removed from the third groove 16. Here, the tray 1 that matches the height of the support body 4 means that the pressing part 87 for releasing the fitting is provided on the back surface of the guide member 6 where the guide groove 6a is formed. This refers to tray 1 whose height matches that of the other tray. Note that the second protrusion 82b of the arm 82 and the pressing portion 87
Both of the upper and lower surfaces of the support member 4 are formed into inclined surfaces with corners taken so that the support body 4 can be raised or lowered without being hindered. Further, the leaf spring 85 is constructed by forming a slit in a thin metal plate according to the arrangement of the arm 82 and bending it, and both ends of the metal plate form bearings 83a and 83b.

Next, the operation of the autochanger device constructed as described above will be explained.

When the power is turned on, first, the switching states of the first and second switches 78 and 81 and the switch 88 fixed at the rear end of the support 4 are detected by the detection means of the control circuit (not shown), and the switch 88 is detected by the detection means of the control circuit (not shown). 1 position is detected. Due to the above detection, a plurality of trays 1
When it is confirmed that all of the components are stored in the storage portion 18, the switching state of the switch 89 fixed to the board 39 to which the sliding mechanism 3 is attached is detected by the detection means. Said switch 89
is not turned on, the control circuit causes the motor 44 of the lifting mechanism 9 to start rotating in the direction of arrow B. When the motor 44 rotates in the direction of arrow B, the fifth pulley 45 rotates in the direction of arrow B, so the rotation is transmitted to the sixth pulley 47 via the belt 46, and a belt is formed on the lower surface of the sixth pulley 47. The worm gear 48 is rotated in the direction of arrow C. The rotation of the worm gear 48 in the direction of the arrow C is transmitted to the sixth gear 49, which is transmitted to the seventh and eighth gears 51 and 52 via the shaft 50 to which the sixth gear 49 is fixed. The eighth gears 51 and 52 are rotated in the direction of arrow D and the direction of arrow E in FIGS. 3 and 4, respectively. When the seventh gear 51 rotates in the direction of arrow D, the first rotating body 53 rotates in the direction of arrow F about the fulcrum 90, so that the tongue piece 5b is connected to the point of action 91 of the first rotating body 53. The guide member 5 is urged downward. On the other hand, when the eighth gear 52 rotates in the direction of arrow E, the second rotating body 54 moves to the fulcrum 92 in FIG.
Since the connecting member 55 fixed to the second rotating body 54 also rotates in the direction of the arrow G about the fulcrum 9
2 as an axis in the direction of arrow G, and the connecting member 5
The guide member 6 to which the tongue piece 6b is connected to the point of action 93 of the guide member 6 is urged downward. Therefore, the support body 4 descends. Here, the seventh and eighth gears 51 and 52 and the respective gear portions 53a and 54a of the first and second rotating members 53 and 54 have the same shape, and the guide member 5
and 6 are adjusted in height by changing the fixing positions of the second rotating body 54 and the connecting member 55 using the adjustment screws 56, so that the support body 4 is kept in a horizontal state and descends. Further, since the base plate 39 to which the sliding mechanism 3 is attached is fixed to the guide member 5, when the support body 4 is lowered, the first and second arms 57 and 5 are moved in accordance with the support body 4.
8 are slid and rotated in predetermined directions, and the crossing angle is changed, and the sliding mechanism 3 is also lowered at the same time. When the support body 4 is lowered to a state where the chucking member 42 of the clamp plate 8 is brought into contact with the turntable 7, the movable contact piece 89a of the switch 89 fixed to the base plate 39 is moved from the movable contact piece 89a provided on the base 12. A control circuit (not shown) detects that the support body 4 is at the lowest position, and the rotation of the motor 44 is stopped. The autochanger then enters a standby state in preparation for the next operation.

When placing a CD on the tray 1 from the above-mentioned standby state, an open/close switch (not shown) corresponding to the tray 1 on which the CD is placed is operated. Then, the motor 44 of the lifting mechanism 9 starts rotating in the opposite direction of arrow B. The rotation of the motor 44 in the opposite direction of arrow B is transmitted via the fifth pulley 45, belt 46 and sixth pulley 47, and rotates the worm gear 48 in the opposite direction of arrow C.
And the eighth gears 51 and 52 rotate in the opposite direction of arrow D and arrow E, respectively. When the seventh gear 51 rotates in the opposite direction of arrow D, the first rotating body 53 rotates about the fulcrum 90 in the opposite direction of arrow F, and when the eighth gear 52 rotates in the opposite direction of arrow E. , since the second rotating body 54 and the connecting member 55 rotate in the opposite direction of the arrow G about the fulcrum 92,
Guide members 5 and 6 are both urged upward. Therefore, the support body 4 and the sliding mechanism 3 rise. At this time, the first and second arms 57 and 5
8 is slid and rotated in a predetermined direction to displace the intersection angle, and the first and second arms 5
Since the spring 61 stretched between 7 and 58 urges the board 39 upward and reduces the influence of the weight of the sliding mechanism 3, the sliding mechanism 3 rises smoothly together with the support 4. do. Further, when the support body 4 and the sliding mechanism 3 are raised, a light emitting diode is activated at the protrusion 17 of the tray 1 or the protrusion 19a of the top plate 19 by a signal obtained from a photocoupler 41 for detecting the tray position attached to the clamp plate 8. The heights of the support body 4 and the sliding mechanism 3 are detected by detecting the number of times and timing at which the light from the photodiode 41b is blocked from being received by the photodiode 41a. Further, the fifth gear 3 of the sliding mechanism 3
1, the protrusion 33a of the first rotating member 33 is connected to the base 12.
The tray 1 vibrates in accordance with the unevenness 66 as it comes into contact with the unevenness 66 formed on the surface of the tray 1, and is engaged with the surface of the rack 13 of the tray 1 from the vertical direction every time the tray 1 reaches the height at which it is placed. move as if

When the support body 4 and the sliding mechanism 3 reach a predetermined position, the rotation of the motor 44 is stopped, and the support body 4 and the sliding mechanism 3 are stopped. In this case, the photocoupler 41 is placed above the position where the guide grooves 5a and 6a of the guide members 5 and 6 are formed, by exactly the distance between the trays 1 when the trays 1 are stored in the storage section 18. At the same time, a protrusion 19a is formed on the top plate 19, which is provided at a position higher than the tray 1 stored at the top of the storage section 18 by the distance, so that the tray 1 placed one level higher than the tray 1 on which the CD is to be placed is formed. Protrusion 17 of tray 1 located at
Alternatively, if the rotation of the motor 44 is stopped when the protrusion 19a of the top plate 19 is detected, the support body 4 and the sliding mechanism 3 are at a predetermined position, that is, the guide members 5 and 6
The height of each guide groove 5a and 6a is CD
It is stopped at a position corresponding to the height of the tray 1 on which the tray 1 is to be placed.

When the support body 4 and the sliding mechanism 3 stop at a predetermined position, the motor 20 of the sliding mechanism 3 starts rotating in the direction of arrow H. When the motor 20 rotates in the direction of arrow H, the first pulley 21 rotates in the direction of arrow H, so the rotation is transmitted to the second pulley 23 via the belt 22.
The first gear 24 integrally molded on the lower surface of is rotated in the direction of arrow I. The rotation of the first gear 24 in the direction of the arrow I is transmitted to the fourth gear 27 via the second gear 25 and the third gear 26, causing the fourth gear 27 to rotate in the direction of the arrow J. When the fourth gear 27 rotates in the direction of arrow J, the third pulley 28 rotates in the direction of arrow J.
The rotation is transmitted to the fourth pulley 30 via the belt 29, and the fifth gear 31 provided on the lower surface of the fourth pulley 30 is rotated in the direction indicated by the arrow K.
direction. Here, the locking mechanism 7 by the pressing part 87 formed on the guide member 6 of the support body 4
By pressing the second protrusion 82b of the arm 82 of No. 5, the first protrusion 82a of the arm 82 and the third groove 16 of the plurality of trays 1 stored in the storage section 18 are fitted to the raised position of the support body 4. are removed in order according to
In addition, since the sliding mechanism 3 has been moved to a predetermined position, the tray 1 on which the CD is to be placed is unlocked, and the rack 1 of the tray 1 is unlocked.
3 is meshed with the fifth gear 31. Therefore, when the fifth gear 31 rotates in the direction of arrow K, the tray 1 slides in the direction of arrow L, which is the front of the storage section 18. When the tray 1 slides in the direction of the arrow L, the first and second grooves are released from the first and second grooves 14 and 15 of the tray 1, respectively, in accordance with the sliding movement.
The protrusions 73b and 74 of the flaps 73 and 74 are removed, and the first and second flaps 73 and 74 are rotated by being pressed by the left side of the tray 1, so that the first and second flaps are rotated. The first and second switches 78 and 81 are switched by the tongues 73a and 74a of 73 and 74, respectively, and it is detected that the tray 1 is located in front of the storage section 18. As the tray 1 continues to slide, the second flap 74 is inserted into the third groove 16.
When the protrusion 74b is fitted and the tray 1 is locked, the second flap 74 is rotated and the second switch 81 is switched again, so that the motor 20
rotation is stopped, and the operation of the sliding mechanism 3 is stopped. At this time, the tray 1 is at the disk attachment/detachment position where the CD 2 is attached/detached, and the notch 1b protrudes forward from the storage portion 18, so if the CD 2 is placed on the placement portion 1a of the tray 1, The placement of CD2 on tray 1 is completed.
In this case, two fingers, for example, a thumb and an index finger, are placed on the edge of the CD 2 and the center hole 2a, and the CD 2 is carried approximately horizontally from the front of the tray 1 to the tray 1, and the CD 2 is placed on the tray 1. However, the movement of the finger is not obstructed by the tray 1 due to the notch 1b. Also, if another CD2 is already placed on tray 1 where CD2 is placed,
First, remove the CD 2. When removing the CD 2, place your finger on the center hole 2a of the CD 2 placed on the tray 1, and also place your finger on the part opposite the notch 1b on the edge of the CD 2 at the front of the tray 1. After lifting the edge of the CD 2 a little, pull it out toward the front of the tray 1 in a substantially horizontal direction. In this case, a finger is placed on the front edge of the tray 1 of the CD 2 due to the notch 1b, and the
Since the CD 2 can be pulled out toward the front in a substantially horizontal direction of the tray 1, even when the trays 1 are stacked at narrow intervals, as shown in FIG. Once it is protruded to this extent, the CD 2 can be removed smoothly.

If the CD 2 is placed on the tray 1 and the tray 1 which is in the disk attachment/detachment position is to be stored in the storage section 18, the opening/closing switch corresponding to the tray 1 is operated again. Then, the motor 20 starts rotating in the opposite direction of arrow H. The rotation of the motor 20 in the opposite direction of the arrow H is performed by the first pulley 21 and the belt 22.
and is transmitted to the first gear 24 via the second pulley 23, causing the first gear 24 to rotate in the opposite direction of arrow I. When the first gear 24 rotates in the opposite direction of the arrow I, the rotation is transmitted to the fourth gear 27 via the second and third gears 25 and 26, causing the fourth gear 27 to rotate in the opposite direction of the arrow J. Rotate. Said fourth
When gear 27 rotates in the opposite direction of arrow J, the rotation is transmitted to fifth gear 31 via third pulley 28, belt 29 and fourth pulley 30, and rotates fifth gear 31 in the opposite direction of arrow K. Rotate. Here, the tray 1 is in the disk attachment/detachment position shown in FIG.
4 is fitted, but the third groove 1
6 and the protrusion 74b are such that when the tray 1 is slid in the direction of arrow L, the tray 1 is locked.
Since the lock is released when the fifth gear 31 is rotated in the opposite direction of the arrow K, the tray 1 is moved in the direction of the arrow L.
As the protrusion 74b is pressed by the side surface of the tray 1, the second switch 81 is activated by the tongue piece 74a of the second flap 74.
is switched, and it is detected that the tray 1 is located in front of the storage section 18. Then, the tray 1 continues to slide in the opposite direction of the arrow L, and the protrusions 73b and 74 of the first and second flaps 73 and 74 are formed in the first and second grooves 14 and 15, respectively.
b is inserted, and the first and second switches 78 and 8
1 is switched, the control circuit detects that the tray 1 is stored in the storage section 18, and the motor 2 is switched.
0 is stopped, and the operation of the sliding mechanism 3 is stopped.

As mentioned above, when a desired opening/closing switch is operated, the desired tray 1 slides to the disk loading/unloading position, and when the opening/closing switch is operated again, the tray 1 is stored in the storage section 18, and once the support body 4 and the slide When the height of the moving mechanism 3 is detected, the support body 4 and the sliding mechanism 3 are raised or lowered by the lifting mechanism 9 based on the current height according to the operated open/close switch. By repeating the above-described operation, the CDs 2 can be placed on a plurality of trays 1 stored in the storage section 18.

If you want to play the CD2 from a state where the CD2 is placed on all or part of the tray 1 stored in the storage section 18 as described above, select the tray 1 on which the CD2 you want to play is placed and perform the playback operation. I do. Then, first, the motor 44 of the lifting mechanism 9 rotates, and the support body 4 and the sliding mechanism 3 move according to the height of the selected tray 1, based on the current height as described above. do. When the support body 4 and the sliding mechanism 3 match the height of the selected tray 1, the motor 44 stops rotating, and the motor 20 of the sliding mechanism 3 starts rotating in the opposite direction of the arrow H. do. Therefore, the fifth gear 31 rotates in the opposite direction of the arrow K, so that the tray 1 is slid in the opposite direction of the arrow L and moves to the rear of the storage section 18. At this time, each guide groove 5 of the guide members 5 and 6
Since the heights of a and 6a match the height of the tray 1, the right and left sides of the tray 1 are guided by the guide grooves 5 and 6, respectively, and follow the arrow L.
is slid in the opposite direction. The tray 1 slides in the opposite direction of the arrow L, and the tray 1 fills the storage section 1 by a predetermined amount.
8, the rear portion of the rack 13 of the tray 1 is engaged with the fourth gear 27 in accordance with the movement. Here, the fourth gear 27 is the fifth gear 3.
The fourth gear 27 and the fifth gear 31 is rotating in the same direction and at the same speed. Further, a slit 96 is formed in the rear part of the rack 13, and since it has elasticity, the rack 13 meshes with the fourth gear 27 smoothly. Therefore, the tray 1 continues to slide in the opposite direction of the arrow L, and eventually the rack 13 and the fifth gear 31 are disengaged, but after that, the tray 1 is moved by the fourth gear 27.
The sliding movement in the opposite direction of the arrow L continues. The tray 1 continues to slide in the direction opposite to the arrow L, and the tray 1
The center hole 2a of the CD 2 placed on the clamp plate 8
When the tray 1 reaches a position facing the chucking member 42 (standby position), a switch 88 provided on the clamp plate 8 is switched by the rear surface of the tray 1. Further, at this time, the light emitting diode 40a and the photodiode 40b of the photocoupler 40 for disc detection face each other, and the detection hole 97 of the tray 1 is located at the opposing position.
Since the CD 2 is present, it is detected that the CD 2 is placed on the tray 1.

When the switch 88 is switched, the rotation of the motor 20 of the sliding mechanism 3 is stopped, the sliding of the tray 1 is stopped, and the rotation of the motor 44 of the lifting mechanism 9 in the direction of arrow B is started, and the rotation of the motor 44 of the lifting mechanism 9 is started. The sliding mechanism 3 begins to descend. Therefore, the tray 1 is lowered together with the support 4. As the tray 1 continues to descend, the turntable 7 will eventually come into contact with the CD 2 through the notch 1b of the tray 1, so that the CD 2 placed on the tray 1 will move toward the turntable as shown by the broken line in FIG. Although it is placed on 7,
The tray 1 is further lowered. Then, the switch 89 fixed to the board 39 is switched by the protrusion 94 provided on the base 12, and the motor 20 is turned on.
Since the rotation of the tray 1 is stopped, the tray 1 is
The playback will be stopped at a playback position that is far away from CD2.
When the tray 1 is in the playback position, the CD 2 placed on the turntable 7 is moved to the turntable 7 by the chucking member 42 of the clamp plate 8.
Since it is pressed upward and separated from the tray 1, when the switch 89 is switched and the turntable 7 rotates,
Due to this rotation, the CD 2 also rotates. On the other hand, the optical pickup 11 is attached to a base 12 so as to be movable in the radial direction perpendicular to the signal track of the CD 2, and when the tray 1 is at the playback position, it moves in the direction in which the notch 1b of the tray 1 is formed. It is arranged so as to move along with the inside of the notch 1b. Therefore, the CD 2 is reproduced by the optical pickup 11.

When the playback of the CD 2 is finished and the turntable 7 is stopped, the motor 44 of the lifting mechanism 9 starts rotating in the opposite direction of arrow B, and the support body 4 and the sliding mechanism 3
begins to rise. Therefore, tray 1 rises,
The CD 2 placed on the turntable 7 is brought into contact with the placing portion 1a of the tray 1. Then said
CD2 is now placed on the tray 1,
It rises together with the support body 4 and the sliding mechanism 3. While the support body 4 and the sliding mechanism 3 are being raised, the location where the tray 1 is not stored in the storage section 18 is detected by the signal obtained from the photocoupler 41 for detecting the tray position. When the movement mechanism 3 continues to rise and it is detected that the heights of the guide grooves 5a and 6a of the guide members 5 and 6 match the height of the area of the storage section 18 where the tray 1 is not stored, the motor 44 is stopped, and the support body 4 and the sliding mechanism 3 are stopped at that location. Then, the motor 20 of the sliding mechanism 3
is rotated in the direction of arrow H, and the tray 1 is slid in the direction of arrow L. The sliding movement of the tray 1 in the direction of the arrow L progresses, and storage of the tray 1 in the storage section 18 is eventually completed, and the rotation of the motor 20 is stopped to complete the operation.

(G) Effects of the Invention As described above, the tray sliding mechanism for a disk player according to the present invention moves the pinion gear meshed with the rack provided for sliding the tray according to the sliding position of the tray. Since the tray is slid by sequentially changing from the first pinion gear to the second pinion gear or from the second pinion gear to the first pinion gear, the tray can be moved without increasing the length of the rack. It has the advantage that the sliding distance can be expanded, and is particularly suitable for achieving a front loading type autochanger device.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an autochanger device using a disk player tray sliding mechanism according to the present invention, FIG. 2 is a front view thereof, and FIGS. 3 and 4.
The figures are right and left side views of the autochanger device shown in FIG. 1, respectively, and FIG. 5 is a sectional view of the autochanger device shown in FIG. 1 from the right side. Explanation of main drawing numbers, 1...Tray, 3...Sliding mechanism, 4...Support, 9...Elevating mechanism, 10...Player section, 12...Base, 13...Rack, 18
... Storage section, 27, 31 ... Pinion gear.

Claims (1)

[Claims] 1. In a tray sliding mechanism of a disk player that slides a tray on which a disk is mounted to a standby position where the center hole of the disk is located on the axis of the turntable, the first and second trays are driven by a single drive source. a pinion gear; and a rack meshed with the first and second pinion gears; the pinion gear meshed with the rack is changed from the first pinion gear to the second pinion gear according to the sliding position of the tray; Alternatively, a tray sliding mechanism for a disk player, characterized in that the sliding displacement range of the tray is expanded by sequentially switching from the second pinion gear to the first pinion gear.