JP3528613B2 - Disc changer device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc changer device for selectively reproducing a disc such as a compact disc (CD).

[0002]

2. Description of the Related Art FIG. 31 shows a main part of a conventional disc changer device. In FIG. 31, 90 is a box-shaped housing, and a disk insertion port is formed in a front plate 90A of the housing 90. Reference numeral 91 denotes a roller arranged in the housing 90 in the vicinity of the disk insertion opening, and the disk 92 inserted from the disk insertion opening is transferred into the housing 90 by the roller 91 driven by a motor.
0 is placed on the tray. One of the disks 92 placed on the plurality of trays is pushed out to the center of the housing 90 by the disk take-out mechanism and fixed to the turntable 93. The turntable 93 is a rotating plate 9 rotatably supported by a bottom plate of a housing 90 by a shaft 94.
It is rotatably held at the tip of 5. The rotating plate 9
A motor is attached to the motor 5, and the turntable 93 is rotated by the driving force of the motor. An optical pickup 96 is provided on the rotating plate 95, and information recorded on the rotationally driven disc 92 is recorded on the optical pickup 96.
Read in.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides a disc changer device which can be made smaller than the conventional overlap reproduction disc changer device described above and which can reliably perform disc exchange and disc reproduction. The purpose is.

[0004]

In order to solve the above-mentioned problems of the prior art, the present invention rotatably holds a turning means for turning a motor as a rotary drive source and a turntable.
And Turn-down table support means, and the disc guide means for transporting a disk to a turntable of the turntable supporting means sandwiching the disk drive of the above rotating means
Drive the turntable support means to one end side
Drive the disc guide means to the first drive section and the other end side.
It is meshed with the moving second drive part, and the tooth part is provided in a substantially arc shape.
That times is obtained by and a dynamic plate, rotation of the Turn-down table support unit, by performing synchronization and disk guide by the disk guiding section, the transfer operation of the disc,
This ensures reliable disk playback operations.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is a disc mounting means having a plurality of trays on which a plurality of discs are mounted, and a rotation for rotating a motor as a rotation drive source. Moving means, disk take-out means that is driven by the turning means to take out one disk from the disk placing means, turntable support means that is turned by the turning means, and the turning means And a disk guide means for driving the disk to the turntable of the turntable supporting means by sandwiching the disk taken out by the disk takeout means, and the rotating means is provided. Since the disk ejecting means, the turntable supporting means pivoting operation, and the disk guide means operate in synchronization, the timing of each operation becomes constant, and the disk ejecting means Operation, rotation of the turntable supporting means, disk guide operation is what can be reliably performed. According to a second aspect of the present invention, a spiral cam means that is rotated by being driven by a rotating means, and a tray opening means that opens between a plurality of stacked predetermined trays by the cam means. It is characterized by having
The tray opening means is simplified.

According to a third aspect of the present invention, the turntable supporting means is inserted between the trays opened by the tray opening means, and the disc is clamped on the turntable of the turntable supporting means. The present invention is characterized in that the disc changer device can be miniaturized because the disc is reproduced by inserting the turntable between the opened trays.

According to a fourth aspect of the present invention, the turntable support means is composed of a rotatable substrate rotatably supported and an optical pickup chassis held by the rotatable substrate via a damper. A lock means for disabling the function of the damper and mechanically fixing the optical pickup chassis to the rotating substrate; and a lock control means for being driven by the rotating means to lock or unlock the lock means. Since the lock control means is provided, the effect of external vibration can be removed by the damper during disc playback, and the turntable can be placed accurately when the disc is not being played. is there.

According to a fifth aspect of the present invention, the first and second disc regulating means, into which the central holes of the discs housed in the disc mounting means can be inserted, are arranged to face each other, and are driven by the rotating means. It is characterized in that it is provided with means for moving the first disc restricting means toward and away from the second disc restricting means, since movement of discs other than the reproduced disc is regulated, This ensures the playback operation.

According to a sixth aspect of the present invention, a groove is formed in a part of an outer peripheral portion of an outer surface of a rotating body which is rotationally driven by a rotating means, and a part of a lever pivotally supported by a fixed part is formed. It is characterized in that it is provided with a disc insertion opening opening / closing means which is brought into contact with the outer peripheral portion of the outer surface of the rotating body and opens / closes the disc insertion opening by vertical movement of the lever. It will be.

According to a seventh aspect of the present invention, there is provided a sliding means which is slid by being driven by the rotating means, and the spiral cam means is rotated in accordance with the sliding operation of the sliding means. In addition, the first and second disc restricting means into which the center holes of the discs accommodated in the disc mounting means can be inserted are arranged so as to face each other, and the first disc restricting means is caused by the sliding operation of the sliding means. Is provided with a means for moving the disk closer to and away from the second disk restricting means. Since the disk restricting means can be operated by the rotating means, the drive mechanism for the disk restricting means is simplified. It will be.

According to an eighth aspect of the present invention, there is provided a gear part having a gear part meshing with a tooth part of the sliding means, a spiral groove formed on the outer peripheral part, and the gear part on the inner peripheral surface. This is characterized in that the first disc regulating means is constituted by the cylindrical body having the pin formed in the groove thereof, and the constitution of the disc regulating means is simplified.

According to a ninth aspect of the present invention, a plurality of trays held so as to be movable up and down, spring means for stacking the plurality of trays, and a disk mounting united by the spring means. It is characterized in that it is provided with elevator means for moving the placing means up and down, and the structure of the elevator means is simplified.

According to a tenth aspect of the present invention, the elevator means for moving the disk mounting means up and down by rotating a cam gear having a spiral groove engaged with the outer peripheral portion of the tray is constructed. And the elevator mechanism for moving the tray is simplified.

According to an eleventh aspect of the present invention, there is provided a disk mounting means having a plurality of trays on which a plurality of disks are mounted, and a rotating means for rotating the motor using a rotation drive source. A disk take-out means that is driven by the turning means to take out one disk from the disk placing means, a lever that is turned by the disk pushed out by the disk take-out means, and a disk that detects the turning of the lever It is characterized in that the presence or absence of a disc on the tray of the disc mounting means is detected by the disc detecting means, and the presence or absence of a disc on the tray can be easily detected. .

According to a twelfth aspect of the present invention, the optical pickup is slidably supported by the turntable supporting means, and the turntable supporting means is inserted between the trays with the legs opened. Then, the disc can be reproduced.

According to a thirteenth aspect of the present invention, the first and second disk holding means are slidably supported on the supporting substrate in the vertical direction, and the supporting substrate is slidably supported in the lateral direction. It is characterized in that the disk guide means is constituted by a cam plate having first and second cam grooves into which the pins of the first and second disk holding means are inserted, and guides the disk. This simplifies the disk guide mechanism. Embodiments of the present invention will be described below with reference to FIGS. 1 to 30. The disc changer device of the following first embodiment is an example of a vehicle-mounted disc changer device installed and used in an automobile.

(Embodiment 1) In FIG. 1 to FIG.
Is a box-shaped casing, and a disc insertion opening is formed in the front plate 1A of the casing 1. Reference numeral 2 denotes a disk loading roller arranged in the housing 1 in the vicinity of the disk insertion opening, and the roller 2 is rotated by a roller driving mechanism (not shown) having a motor as a rotation driving source. Insert and eject. Reference numeral 4 denotes a semi-annular tray that holds the disc 3, and a plurality of trays 4 are stacked and arranged on the corner side of the back plate 1B and the right side plate 1C in the housing 1. A ridge is formed on the upper surface of the outer end of the tray 4 facing the rear plate 1B and the upper end of the right side plate 1C. When the trays 4 are stacked, a space corresponding to the height of the protrusion is formed, and the disc 3 is placed in this space.
Is to be stored. Metal plates 5 are arranged on the uppermost surface side and the lowermost surface side of the plurality of trays 4, respectively, and holes are formed in the tray 4 and the metal plate 5 at three locations. Since three tray guide shafts whose both ends are fixed to the top plate and the bottom plate of the housing 1 are inserted into the holes of the tray 4 and the metal plate 5, the plurality of trays 4 and the metal plate 5 are the above three. It can be moved up and down by being guided by the tray guide shaft. A lever 6 is rotatably supported in the housing 1, and a roller 7 is held at the tip of the lever 6. The lever 6 is biased clockwise (FIG. 1) by a spring (not shown). The disc 3 inserted from the disc insertion opening formed in the center of the front plate 1A of the housing 1.
Are transferred by the disk loading roller 2 and transferred into the housing 1 toward the back plate 1B. During this transfer, the roller 7 at the tip of the lever 6 comes into contact with the outer peripheral surface of the disc 3, so that the disc 3 is turned in the direction of the tray 4 and stored in the tray 4.

3 to 5 show the tray elevator mechanism according to the first embodiment. 3 to 5, reference numeral 8 denotes a coil spring, the lower end of the coil spring 8 is locked to the metal plate 5 arranged at the lowermost portion, and the upper end of the coil spring 8 is engaged with the metal plate 5 arranged at the uppermost portion. It has been stopped. Due to the elastic force of the coil spring 8, the plurality of trays 4 are urged and overlapped so as to be sandwiched between the upper and lower metal plates 5 as shown in FIGS. Reference numeral 9 denotes a first cam gear rotatably supported in the housing 1. The first cam gear 9 is formed at the center of the outer peripheral portion of the tray 4 and the metal plate 5, as shown in FIG. A spiral cam groove 9A into which the formed protruding piece is inserted is formed. The width of the part 9B of the spiral crest portion of the first cam gear 9 is formed to be thicker than the width of the other crest portion 9C. Reference numeral 10 is a projecting piece integrally formed with the mountain portion 9B. Similarly, the second and third cam gears 11 and 12 are the housing 1
It is rotatably supported inside. The second and third cam gears 11 and 12 are provided with cam grooves into which the protrusions formed at the ends of the outer peripheral portions of the tray 4 and the metal plate 5 are inserted, and the second and third cam gears 11 and 12 are also formed. The width of a part of the mountain portion is thicker than the width of other mountain portions. The second and third cam gears rotate together with the first cam gear 9 in synchronization with the rotational driving force of the motor (motor 26 in FIG. 6).
Further, in the vicinity of the second and third cam gears 11 and 12, fourth and fifth cam gears each having a ridge portion having a width larger than that of the ridge portions of the second and third cam gears 11 and 12. 13, 14 are rotatably supported. The cam gears 9, 11, 1 are driven by a drive mechanism using the motor 26 as a rotation drive source.
When the tray 2 rotates, the trays 4 are sequentially opened in association with this rotation, and the fourth and fifth cam gears 13 and 14 are rotated by the drive mechanism having the motor 30 (the motor 30 in FIG. 18) as a rotational drive source. Then, as shown in FIGS. 4 and 15, the space between the trays 4 is further widened.

FIG. 6 shows a mechanism for rotationally driving the first, second and third cam gears 9, 11 and 12. Figure 6
In the above, reference numeral 26 denotes an elevator motor attached to the bottom plate of the housing 1, and reference numerals 9, 11, and 12 denote the first, second, and twelfth members rotatably supported between the bottom plate and the top plate of the housing 1. 3 is a cam gear, 27 is a worm gear attached to the rotating shaft of the motor 26, G1, G2, G3, G4, G5, G6, G
Reference numerals 7 and G8 denote gears rotatably supported on the bottom plate of the housing 1, and the rotational driving force of the motor 26 is the first, second, and third cam gears 9 and 11 via the gears G1 to G8. 1
2 is transmitted to the first, second and third cam gears 9, 11,
Rotate 12. That is, the rotational driving force of the motor 26 is transmitted to the first cam gear 9 through the worm gear 27 → gear G4 → gear G5 → gear G6 to rotate the first cam gear 9, and the rotational driving force of the motor 26 is The worm gear 27 → gear G3 → gear G2 → gear G1 is transmitted to the third cam gear 12 to rotate the third cam gear 12, and the rotational driving force of the motor 26 is the worm gear 27 →
It is transmitted to the second cam gear 11 via the gear G4 → gear G5 → gear G7 → G8 to rotate the second cam gear 11. FIG. 8 shows the second and third cam gears 11,
12 is shown. At the lower ends of the second and third cam gears 11 and 12, a gear portion 11A that meshes with the gears G8 and G1,
12A is formed, and the second and third cam gears 11, 1 are formed.
On the upper part of 2, spiral cams 11B and 12B are integrally formed. FIG. 9 is a diagram in which the cylindrical cam gears 11 and 12 are developed in a plane, and the spiral cams 11B and 12B are shown.
The protrusion 4A integrally formed on the outer periphery of the tray 4 contacts the surface of the. When the cam gears 11 and 12 rotate, the protrusion 4A is driven upward or downward by the cams 11B and 12B as shown in FIG. FIG. 10 shows the fourth and fifth cam gears 13 and 14. In FIG. 10, 13
A and 14A are gear portions formed on the lower portions of the cam gears 13 and 14, and 13B and 14B are spiral cams formed on the outer peripheral surfaces of the cam gears 13 and 14, respectively.
The inclined surface of B is formed large. FIG. 11 is a diagram in which the cylindrical cam gears 13 and 14 are developed in a plane shape, and the projections 4B integrally formed on the outer periphery of the tray 4 contact the surfaces of the spiral cams 13B and 14B. When the cam gears 13 and 14 rotate, the protrusion 4B is largely driven downward as shown in FIG.

FIG. 12 shows the outline of the operation of the elevator mechanism of the tray 4 by the first, second, third, fourth and fifth cam gears 9, 11, 12, 13, 14. When the cam gears 9, 11, and 12 rotate in synchronization, the plurality of trays 4 are arranged in the plurality of trays 4 (A) → (B) → (C) → (D) → (E) in FIG.
→ As shown in (F), it descends as a unit. At the time of this lowering, the trays 4 are sequentially opened by the wide portions of the ridges of the second and third cam gears 11 and 12. When a predetermined disc reproduction is designated (for example, the reproduction of the second disc from the bottom is designated), the elevator mechanism operates and FIG.
2 (A) → (B), and the operation of the elevator mechanism stops in the state shown in FIG. 12 (B). In the state shown in FIG. 12B, the drive mechanism rotates the fourth and fifth cam gears 13 and 14. The fourth and fifth cam gears 13 and 14 are shown in FIG.
The spiral cams 13B and 1 having a large inclination angle as shown in FIG.
4B is formed, the second tray 4 from the bottom in FIG. 12B is driven downward, and the space between the second tray from the bottom and the third tray from the bottom is greatly opened as shown in FIG. It is what is legged.

16 and 17 show an optical pickup unit equipped with a turntable, an optical pickup and the like. 16 and 17, reference numeral 15 denotes a substrate rotatably supported on the bottom surface of the housing 1 by a shaft 16, and an optical head chassis 18 is supported on the substrate 15 via three rubber dampers 17. ing. An optical pickup 19 is moved to the optical head chassis 18 in the arrow A direction by a feed screw. Optical systems such as a light emitting element and a light receiving element are incorporated in the optical pickup 19. Reference numeral 20 denotes an objective lens that constitutes an optical system.
The laser light emitted from 0 irradiates the disc 3, and the reflected light reflected by the disc 3 enters the light receiving element via the objective lens 20. The light receiving element converts the received laser light into an electric signal and outputs the electric signal, and the information recorded on the disk 3 is reproduced from the output signal. Reference numeral 21 is a turntable rotatably held by the optical head chassis 18, and this turntable 21 is a motor 22 mounted on the lower surface of the optical head chassis 18.
It is directly connected to the rotating shaft of. 23 is a turntable 21
A plurality of claws that can be opened and closed in the center of the claw 2 when the disc 3 is not mounted on the turntable 21.
3 is in a closed state, and when a disc is placed on the turntable 21, the pawl drive mechanism drives the pawls 23 to open outward to hold the disc 3 on the turntable 21. Reference numeral 97 is a bent piece formed by bending the outer peripheral portion of the optical head chassis 18 downward.
A groove 98 is formed in the groove. Reference numeral 99 denotes a sliding plate slidably supported by the substrate 15, and the sliding plate 99 has an inverted L
A letter-shaped lock piece 99A is formed. The sliding plate 9
9 slides, and the lock piece 99A moves into the groove 98 of the bent piece 97.
, The optical head chassis 18 is mechanically locked to the substrate 15, so that the damper 17 becomes inoperative and the suspension locks. Conversely, when the sliding plate 99 slides and the lock piece 99A and the groove 98 of the bent piece 97 are disengaged, the suspension lock is released and the damper 17 is released.
Becomes the operating state, and the optical head chassis 18 becomes the damper 1
It will be supported by the substrate 15 via 7. During reproduction of the disc, the damper 17 is supported in the operating state by the substrate 15 to prevent external vibration from being transmitted to the optical head chassis 18. Further, when the disc is transferred to the turntable 21 and the disc is clamped on the turntable 21, the lock piece 99A is engaged with the groove 98 of the bent piece 97 to render the damper 17 inoperative (suspension locked state). Therefore, the disc is securely clamped to the turntable 21.

In FIG. 1, reference numeral 24 is a disc pushing lever slidably held at the tip of a shaft 25.
When the disc push-out lever 24 is rotated in the clockwise direction (FIG. 1) by the drive mechanism using the motor 30 of FIG. 8 as a rotational drive source, the tip of the disc push-out lever 24 enters between the trays 4 and the outer circumference of the disc 3 on the tray 4 Press the side, tray 4
One disk 3 is pushed out toward the center of the housing 1. The disc 3 extruded from the tray 4 is shown in FIG.
The disk guide mechanism shown in FIG. 28 transfers it to the turntable 21 and fixes it to the turntable 21 for rotation.

18, 19, and 20 show the first embodiment.
The mechanism driven by the first motor 30 in FIG. In FIGS. 18, 19, and 20, reference numeral 1 denotes a housing, and a motor 30 is attached to a side plate of the housing 1. The rotational driving force of the motor 30 is a gear reduction mechanism (see FIG.
0) 31 is transmitted to rotate the gear 32. Reference numeral 33 denotes an arcuate rotary plate slidably supported on the bottom surface of the housing 1, and tooth portions 33A formed on the outer periphery of the rotary plate 33 mesh with the gear 32. 34 is a shaft 3 on the bottom surface of the housing 1.
The gear 3 is rotatably supported by
Reference numeral 4 meshes with a tooth portion 33A of the rotating plate 33. 34A is a cam groove formed on the upper surface of the gear 34. 36 is a plate member (not shown) that is attached to the housing 1 and is parallel to the bottom plate of the housing 1.
The lever 36 is rotatably supported by a shaft 37, and a pin 36A inserted into the cam groove 34A of the gear 34 is planted in the lever 36, and a pin 36B is planted in the tip of the lever 36. It is set up. The pin 36B of the lever 36 engages with a disc guide mechanism described later, and the disc guide mechanism operates as the lever 36 rotates. Reference numeral 38 denotes a lever rotatably supported on the bottom plate of the housing 1 by a shaft 39, and a pin 38A is planted at the tip of the lever 38. 40 is a shaft 4 on the bottom plate of the housing 1.
1 is a gear wheel rotatably supported on the upper surface of the lever 38, and the gear wheel 40 meshes with the gear wheel 34. A cam hole 40A is formed in the gear 40. 38B is a pin implanted in the lever 38, and this pin 38B is inserted into the cam hole 40A of the gear 40. The pin 38A of the lever 38 is the substrate 1 shown in FIG.
5, the board 15 is driven by the turning operation of the lever 38, and the board 15 is rotated about the shaft 16 as a center of rotation, so that the turntable 21 moves toward the center of the housing 1 or the housing 15. It moves in the direction of the front plate 1A of the body 1.

Reference numeral 42 designates a gear rotatably supported on the bottom plate of the housing 1 by a shaft 43, and the gear 42 meshes with a tooth portion 33A of the rotary plate 33. 42A is a cam hole formed in the gear 42, 44 is an arm slidably supported by a pin 45 of the bottom plate of the housing 1, and this arm 44 has the gear 42
A pin 44A that engages with the cam hole 42A is planted. The arm 44 engages with the sliding plate 28 shown in FIG.
As the arm 44 slides, the suspension of the optical head chassis 18 is locked or unlocked.
That is, the optical head chassis 18 is the substrate 15 as described above.
The suspension lock mechanism is unlocked during the reproducing operation of the disk, the suspension lock mechanism is locked except the reproducing operation, the optical head chassis 18 is fixed to the substrate 15, and the damper is supported. It is to prevent 17 from working. When the arm 44 moves toward the center of the housing 1, the suspension lock mechanism is locked, and when the arm 44 slides in the opposite direction, the suspension lock mechanism is unlocked.

Reference numeral 46 denotes a gear wheel rotatably supported by a shaft 47 on the bottom plate of the housing 1, and the gear wheel 46 meshes with the tooth portion 33A of the rotary plate 33. 46A is a cam groove formed on the upper surface of the gear 46. Reference numeral 48 denotes a lever attached to the housing 1 and rotatably supported by a shaft 49 on a plate member (not shown) parallel to the bottom plate of the housing 1.
Is a pin 48 inserted into the cam groove 46A of the gear 46.
A is planted and pin 4 is attached to the tip of lever 48.
8B is planted. Pin 48B of the lever 48
Is to engage with a disc guide mechanism described later, and the disc guide mechanism operates in accordance with the rotation of the lever 48.

Reference numeral 50 denotes an intermediate gear rotatably supported on the bottom plate of the housing 1 by a shaft 51, and the intermediate gear 50 meshes with the gear 46. Reference numeral 52 denotes a lever rotatably supported by a shaft 53 on the bottom plate of the housing 1. A pin 52A is formed on the lever 52, and a pin 2B is planted at the tip of the lever 52. . A gear 54 is rotatably supported on the bottom plate of the housing 1 by a shaft 55, and the gear 54 meshes with the intermediate gear 50. 54A is a cam hole with which the pin 52A of the lever 52 is engaged.

Reference numeral 56 denotes a pin 57 that is planted on the bottom plate of the housing 1.
The slide plate 56 is slidably supported by the pin 52B of the lever 52 is engaged with an elongated hole 56A formed at one end of the slide plate 56. 56B and 56C are sliding plates 5
6 is a tooth portion formed on the outer periphery of the end portion of 6 and 56D is a sliding plate 5
6 is a tooth portion formed on the inner circumference of the middle portion. The tooth 5
6B and 56C are meshed with cam gears 11 and 12 which constitute the elevator mechanism of the tray. Reference numeral 58 denotes a switch drive plate rotatably supported on the bottom plate of the housing 1 by a shaft 59. The switch drive plate 58 is driven by one end of the rotary plate 33 to turn the switch 60 on and off. Reference numeral 61 denotes a switch drive plate slidably supported on the bottom plate of the housing 1. The switch drive plate 61 is driven by the other end of the rotating plate 33 to turn the switch 62 on and off.

Next, the operation of the mechanism shown in FIGS. 18 to 20 will be described. The state shown in FIG. 18 is a state in which the rotating plate 33 is rotated to the terminal end in the counterclockwise direction, and this state is a state in which a disc is inserted or ejected from the disc insertion opening of the front plate 1A of the housing 1. is there. In the state shown in FIG. 18, when the motor 30 starts rotating, the rotational driving force of the motor 30 is transmitted to the gear 32 via the gear reduction mechanism 31. Therefore, the rotating plate 33 that meshes with the gear 32 rotates clockwise.

FIG. 21 shows the operating state of each part when the rotating plate 33 is rotated clockwise from the state shown in FIG. T0 to T11 in FIG. 21 indicate predetermined rotation angles of the rotating plate 33 when the state shown in FIG. In FIG. 21, a section from T0 to T2 is a section for loading and unloading the disc, and a section from T2 to T11 is a section until the start of the disc reproducing operation. When the motor 30 starts rotating at T0, the rotating plate 33 starts rotating clockwise.
The gear 4 that meshes with the rotating plate 33 as the rotating plate 33 rotates
6 rotates, the intermediate gear 50 meshing with the gear 46 rotates, and the gear 54 meshing with the intermediate gear 50 rotates. At T0 in FIG. 21, the roller 82 rotatably supported by the lever 80 enters the groove 54A of the gear 54 as shown in FIG. As shown in FIG. 21, the rotating plate 33
Is rotated by a rotation angle T1 or more, the roller 82 rotates the gear 54.
And exit the groove 54A to close the disc insertion opening.

The rotation angle T2 in FIG. 21 is the standby position, and when the disk reproduction is instructed at the standby position T2, the motor 30 starts rotating. Motor 30
When the disc starts to rotate, the disc push-out lever 24 is driven, and the disc 3 on the tray 4 is pushed and pushed toward the center of the housing 1. When the rotating plate 33 is rotated clockwise (FIG. 18) by being driven by the motor 30, and the gear 54 that rotates with the rotation of the rotating plate 33 rotates by a predetermined angle, a cam hole of the gear 54 is formed. Pin 52A of lever 52 engaged with 54A
Is driven, and the lever 52 starts rotating (angle T4 in FIG. 21). When the lever 52 rotates, the sliding plate 56 connected to the pin 52B at the tip of the lever 52 slides, and the cam gear 11 that meshes with the tooth portions 56B and 56C of the sliding plate 56,
12 rotates (angle T4 in FIG. 21). Cam gear 11,
The rotation of 12 causes the predetermined tray 4 to move to the cam gears 11, 12
It is pressed downward by and the space between the trays 4 is opened as shown in FIG. Further, along with the sliding operation of the sliding plate 56, the sliding plate 5
The gear 63 meshing with the tooth portion 56D of 6 rotates (T4 to T6 in FIG. 21), and the pin 64A of the disc restricting body 64 engaged with the cam groove 63A of the gear 63 is driven to move the disc restricting body 64. As it descends, the distance between the disc regulating members 64 and 65 becomes wider.

Since the gear 34 is meshed with the tooth portion 33A of the rotating plate 33, the gear 34 also rotates as the rotating plate 33 rotates. Since the gear 40 meshes with the gear 34, the gear 40 rotates as the rotating plate 33 rotates. Rotating plate 33
When the rotation of the lever exceeds the angle T6, the pin 38A of the lever 38 inserted into the cam hole 40A of the gear 40 is driven and the lever 38 rotates. Since the pin 38A of the lever 38 is locked to the substrate 15 that holds the optical head chassis 18,
The substrate 15 rotatably supported on the bottom plate of the housing 1 by the shaft 16 is rotated counterclockwise about the shaft 16, and the turntable 21 provided on the optical head chassis 18 is located at the center of the housing 1. Is moved in the direction.

Gears 34, 4 are provided on the teeth 33A of the rotating plate 33.
6 meshes with each other, so that the gear 3 rotates as the rotating plate 33 rotates.
4, 46 also rotate. Cam grooves 34A of the gears 34, 46,
The pin 36A of the lever 36 and the pin 48B of the lever 48 are engaged with 46A, respectively, and the levers 36 and 48 rotate as the gears 34 and 46 rotate. The pin 36B of the lever 36 engages with the cam plate 71 of the first disc guide mechanism, and the pin 48B of the lever 48 engages with the cam plate 77 of the second disc guide mechanism 74. Therefore, when the gears 34 and 46 rotate with the rotation of the rotating plate 33, the levers 36 and 48 rotate (T9 to T1 in FIG. 21).
1) Cam plates 71 and 7 of the first and second disc guide mechanisms
7 is driven and the disc holding pieces 69, 70 and the disc holding pieces 75, 76 are as shown in FIGS. 27 (A) (B) (C) (D) and FIGS. 28 (A) (B) (C) (D). Move up and down,
Disc holding pieces 69, 70, disc holding pieces 75, 76
After the disc 3 is clamped by and is transferred to the turntable 21, and the disc 3 is clamped by the turntable 21, the disc holding pieces 69 and 70 and the disc holding pieces 75 and 76 are largely opened.

Since the gear 42 meshes with the tooth portion 33A of the rotating plate 33, the gear 42 also rotates as the rotating plate 33 rotates. Since the pin 44A of the slidable arm 44 is engaged with the cam hole 42A of the gear 42, when the turning angle of the turning plate 33 exceeds the angle T10, the arm 44 is driven by the turning of the gear 42. The arm 44 slides in a direction of approaching the front plate 1A of the housing 1. The optical head chassis lock mechanism is engaged with the arm 44, and the arm 44 is attached to the front plate 1.
When sliding in the direction A, the lock of the optical head chassis lock mechanism is released, and the optical head chassis 18 is tampered with.
It is supported by the substrate 15 via. Rotating plate 33
When is further rotated clockwise, the switch driving plate 61 is driven by the tip of the rotating plate 33, the switch 62 is turned on, and the rotation of the rotating plate 33 is stopped.

FIG. 22 shows the housing 1 in FIGS. 18 and 19.
3 shows a gear 63 rotatably supported on the bottom plate of FIG.
The gear 63 meshes with the tooth portion 56 of the sliding plate 56. A groove 63A is formed on the outer peripheral surface of the gear 63. FIG. 23 shows a cylindrical disc restricting body 64. A pin 64A is formed on the inner peripheral surface of the disc restricting body 64. 64B is a protrusion for stopping rotation. The gear 63 shown in FIG. 22 is inserted into the disc restricting body 64, and the pin 64A on the inner surface of the disc restricting body 64 is inserted into the groove 63A of the gear 63. Since the protrusion 64B of the disc restricting body 64 is inserted into the hole of the bottom plate of the housing 1, the disc restricting body 64 moves up and down in FIG. 23 when the gear 63 rotates. In FIG. 23, reference numeral 65 denotes a disc restricting body attached to the upper surface plate 66 of the housing 1, and when the disc restricting body 64 moves up and down, the distance between the disc restricting bodies 64 and 65 changes. Disk regulator 6
The locations of the Nos. 4 and 65 in the housing 1 are the locations where the center holes 3A of the disks 3 accommodated in the tray 4 can be inserted. As shown in FIG. 23, the selected disk 3 passes between the disk restriction bodies 64 and 65, and when transferring the selected disk 3 toward the turntable 21, the disk restriction bodies 64 and 65 are transferred. The spacing between
Since the center hole 3A of the other disc 3 placed on the tray 4 is inserted into the disc regulating bodies 64 and 65, the other disc is prevented from jumping out in the turntable direction. When the selected disc is held on the turntable 21 and the disc is reproduced, the gap between the disc regulating members 64 and 65 becomes wide, and the disc 3 rotationally driven by the turntable 21 has a wide gap. It rotates between the regulation bodies 64 and 65.

24, 25, and 26 show the first disc guide mechanism indicated by 67 in FIG. 24,
In FIGS. 25 and 26, reference numeral 68 denotes a support substrate fixed to the upper surface plate of the housing 1. The support substrate 68 has two elongated holes 68A and 68B in the vertical direction and one elongated hole 68 in the horizontal direction.
C is formed. 69 is the long hole 6 of the supporting substrate 68.
8A is a disc holding piece which is slidably supported up and down, and two pins 6 planted in the disc holding piece 69.
9A and 69B are inserted in the elongated hole 68A. 70
Is a disc holding piece which is slidably supported in the elongated hole 68B of the supporting substrate 68.
The two pins 70A and 70B implanted in the
It is inserted in B. Reference numeral 71 is a cam plate slidably supported on the support substrate 68 in the lateral direction.
Cam grooves 71A, 71B are formed in the. The disc holding pieces 69, 70 are supported on one surface of the support substrate 68 slidably in the vertical direction, while the cam plate 71 is supported on the other surface of the support substrate 68 in the left and right slidable manner. There is something. The pin 69A planted in the disc holding piece 69 is inserted in the cam groove 71A, and the pin 70B planted in the disc holding piece 70 is inserted in the cam groove 71B. 72 is a pin implanted in the cam plate 71,
The pin 72 is inserted into the long hole 68C of the support substrate 68,
The cam plate 71 is guided by the elongated hole 68C and slides horizontally with respect to the support substrate 68. Reference numeral 73 is a bent piece integrally formed in the lower portion of the cam plate 71, and a long groove 73A is formed in the bent piece 73. The long groove 73A of the bent piece 73 is shown in FIG.
A pin 36B planted in the lever 36 shown in FIG. 19 is inserted. When the lever 36 rotates, the cam plate 71 slides laterally on the support substrate 68 by the pin 36B of the lever 36. When the cam plate 71 slides in the lateral direction,
With the cam grooves 71A and 71B of the cam plate 71, the pin 69
Since A and 70B are driven, the disk holding pieces 69 and 70 supported by the supporting substrate 68 so as to be slidable in the vertical direction slide in the vertical direction.

27 (A), (B), (C), (D)
Shows a side surface of the disc guide mechanism. When the cam plate 71 is driven by the pin 36B of the lever 36 and the cam plate 71 slides to the right in FIG. 24, the disc holding pieces 69, 70 slide up and down, and the disc holding pieces 69, 70.
The interval between them changes in the order of (A) → (B) → (C) → (D) in FIG. FIG. 27A shows the timing when the disc 3 pushed out from the tray 4 is transferred between the disc holding pieces 69, 70.
The spacing between them is slightly wider than the thickness of the disc 3. FIG. 27B shows a state in which the horizontal movement of the disc 3 is completed and the disc 3 is held by the disc holding pieces 69, 70. In this state, the disc holding pieces 69, 70
70 moves down while holding the disc 3 therebetween. FIG. 27
(C) is a timing at which the disc 3 descends to the position of the turntable 21 and the disc 3 is clamped to the turntable 21 by the claws 23. At this timing, the interval between the disc holding pieces 69 and 70 becomes a little wider. Figure 2
7 (D) turntable 2 after the disc clamp is completed
It is the timing to rotate 1 to play the disc,
When the disc is played, the disc holding piece 69 moves up and the disc holding piece 70 moves down.
The interval between 0 is the widest. In FIG. 20, 74 is a second disk guide mechanism, and this second disk guide mechanism is a mechanism similar to the first disk guide mechanism shown in FIGS. 24 to 26 and is synchronized with the first disk guide mechanism. Then, as shown in FIGS. 28 (A), (B), (C), and (D), the disk holding pieces 75 and 76 are moved up and down. In FIGS. 28 (A), (B), (C), and (D), reference numeral 77 is a cam plate 71 of the first disc guide mechanism 67.
The cam plate 77 is equivalent to the cam plate 77, and the pin 48B of the lever 48 shown in FIGS. 18 and 19 is inserted into the long groove 78A of the bent piece 78 of the cam plate 77. In FIG. 18, when the rotating plate 33 is rotated clockwise, the gear 46 meshing with the tooth portion 33A of the rotating plate 33 is rotated, and the cam groove 46A of the gear 46 is rotated.
The pin A of the lever 48 engaging with
Rotates about the shaft 49. Therefore, the lever 48
The cam plate 77 is driven by the pin 48B of the
Slides in the lateral direction, and the cam plate 77 moves the disk holding pieces 75 and 76 up and down.

FIG. 29 shows a part of a mechanism for opening and closing the disc insertion opening formed in the front plate 1A of the housing 1. In FIG. 29, reference numeral 79 is a projecting piece formed by bending a part of the bottom plate of the housing 1, 80 is a lever rotatably supported by the projecting piece 79 by a shaft 81, and a roller is provided below the lever 80. 82 is rotatably supported. 54A is a groove formed on the outer peripheral portion of the upper surface of the gear 54.
When is rotated, the roller 82 moves in and out of the groove 54A. When the roller 82 enters the groove 54A, the upper end of the lever 80 moves downward, and when the roller 82 exits the groove 54A, the upper end of the lever 80 moves upward. By the vertical movement of the upper end of the lever 80, the disc insertion opening is opened and closed, and the roller 82
When the disc enters the groove 54A, the disc insertion opening is opened, and the disc can be inserted and ejected through the disc insertion opening. On the other hand, when the roller 82 comes out of the groove 54A, the disc insertion opening is closed and the disc cannot be inserted or ejected. When the gear 54 rotates in accordance with the rotation of the rotating plate 33 in the section from T0 to T2 in FIG. 21, the roller 82 moves out of the groove 54A to the outside of the groove 54A, so that the lever 80 moves up to open the disc insertion opening. Can be inserted. Here, when a disc is inserted into the disc insertion opening, the disc sensor is detected by an optical sensor, a disc transfer motor (not shown) is rotated, and the roller 2 is rotationally driven. Be transferred in.

As described above, in the first embodiment, the rotational driving force of the motor 30 causes the rotating plate 33 to rotate clockwise from the state shown in FIG. 18 to the state shown in FIG. The insertion opening is closed, and the fourth and fifth cam gears 13 and 14 are rotated to greatly open the space between the trays 4, and the lever 38 is rotated to move the optical head unit to the shaft 16.
And the turntable 21 is moved between the trays 4 which are largely opened, and the levers 36 and 48 are rotated to drive the first and second disc guide mechanisms 67 and 74 to hold the disc 3 therebetween. Turn the disc with the turntable 2
After the disc 3 is clamped to the turntable 21, the disc holding pieces 69, 70 and the disc holding pieces 75, 76 are opened widely. After that, the suspension lock of the optical head chassis 18 is released by the operation of the arm 44, and the disc reproducing state shown in FIG. 19 is brought about.

FIG. 30 shows a disk search mechanism according to the second embodiment. In FIG. 30, 83 is a shaft 84
Is a disc push-out lever rotatably supported by the housing 1 by one end of the disc push-out lever 83.
Reference numeral A denotes a disk drive portion that drives the outer peripheral surface of the disk 3, and a projection 83B is formed on the other end of the disk push-out lever 83. When the projection 83B is driven by the cam mechanism that meshes with the gear reduction mechanism of the motor 30 shown in FIG. 18, the outer peripheral surface of the disc 3 placed on the tray 4 is pushed by the disc drive portion 83A and the disc is pushed out of the tray. To be done. Reference numeral 85 is a lever rotatably supported on the housing 1 by a shaft 86, 87 is a spring for urging the lever 85 in a clockwise direction, 88 is a protrusion formed integrally with the lever 85,
Reference numeral 89 denotes a photocoupler attached to the top plate of the housing 1, and the light emitting element and the light receiving element of the photocoupler 89 are opposed to each other with the protrusion 88 interposed therebetween. As described above, when the disc 3 is pushed out by the disc driving portion 83A of the disc pushing lever 83, the lever 85 is rotated counterclockwise (FIG. 30) by the pushed disc 3. As a result of the rotation of the lever 85, the protrusion 88 formed integrally with the lever 85 also rotates. As a result, the protrusion 88 moves from between the light emitting element and the light receiving element of the photocoupler 89.
9 switches from off to on. In this way, by pushing the disc on the tray with the disc pushing lever 83, it is determined whether or not the lever 85 is rotated by the photo coupler 89.
The presence / absence of the disc on the tray is detected by performing the above detection. When the power of the disc changer device of the first embodiment is turned on, the tray 4 is raised or lowered by the elevator mechanism shown in FIG. 6, and the disc push-out levers 83 are sequentially inserted between the trays 4 in synchronization with this elevator mechanism. Then, at this time, by detecting whether or not the lever 85 rotates, the discs 3 on the trays 4 are detected.
The presence or absence of is detected.

[0040]

According to the present onset Akira, according to the present invention, turntable support hand
Step rotation, disc guide by disc guide means
To perform synchronization and etc., becomes the timing of each operation is constant, rotation of Turn-down table support means, the disk guide operation is what can be reliably performed.

[Brief description of drawings]

FIG. 1 is a top view of a disc changer device according to a first embodiment of the present invention.

FIG. 2 is a top view of the first embodiment during a reproducing operation.

FIG. 3 is a side view of the tray mechanism unit according to the first embodiment.

FIG. 4 is a side view of the tray mechanism portion during reproduction according to the first embodiment.

FIG. 5 is a side view of the tray mechanism portion during reproduction according to the first embodiment.

FIG. 6 is a top view of the elevator mechanism according to the first embodiment.

FIG. 7 is a side view of the cam gear according to the first embodiment.

FIG. 8 is a side view of the cam gear according to the first embodiment.

FIG. 9 is an operation explanatory diagram of the cam gear according to the first embodiment.

FIG. 10 is a side view of another cam gear according to the first embodiment.

FIG. 11 is an operation explanatory diagram of another cam gear according to the first embodiment.

FIG. 12 is a diagram showing an outline of the operation of the elevator mechanism of the first embodiment.

FIG. 13 is a diagram showing an outline of an elevator mechanism at the time of reproducing a disc according to the first embodiment.

FIG. 14 is a side view of the elevator mechanism according to the first embodiment.

FIG. 15 is a side view of the elevator mechanism at the time of reproducing the disc according to the first embodiment.

FIG. 16 is a top view of the optical head chassis according to the first embodiment.

FIG. 17 is a side view of the optical head chassis according to the first embodiment.

FIG. 18 is a top view of the drive mechanism according to the first embodiment.

FIG. 19 is a top view of the drive mechanism according to the first embodiment.

FIG. 20 is a top view of part of the drive mechanism according to the first embodiment.

FIG. 21 is a diagram showing an operation timing of the drive mechanism of the first embodiment.

FIG. 22 is a side view of the gear according to the first embodiment.

FIG. 23 is a side view of the disc restricting mechanism according to the first embodiment.

FIG. 24 is a front view of the disc guide mechanism according to the first embodiment.

FIG. 25 is a front view of the disc guide mechanism according to the first embodiment.

FIG. 26 is a front view of the disc guide mechanism according to the first embodiment.

FIG. 27 is a side view of the disc holding piece according to the first embodiment.

FIG. 28 is a side view of another disk holding piece according to the first embodiment.

FIG. 29 is a side view of a part of the opening / closing mechanism of the disc insertion opening according to the first embodiment.

FIG. 30 is a top view of a disk presence / absence detection mechanism according to another embodiment.

FIG. 31 is a top view showing an outline of a conventional disc changer device.

[Explanation of symbols]

1 case 2 rollers 3 discs 4 trays 5 metal plates 6 lever 7 Laura 8 coil spring 9 First cam gear 10 protrusions 11 Second cam gear 12 Third cam gear 13 Fourth cam gear 14th cam gear 15 substrates 16 axes 17 damper 18 optical head chassis 19 Optical pickup 20 Objective lens 21 turntable 22 motor 23 nails 24 Disc extrusion lever 25 axes

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isamu Nakade 2-45, Hikosancho, Kanazawa, Ishikawa Prefecture Matsushita Communication Kanazawa Research Institute, Inc. (72) Kenji Urushihara, Hikozocho, Kanazawa, Ishikawa Prefecture 2-14-45 Matsushita Communication Kanazawa Laboratories Co., Ltd. (72) Inventor Masakazu Kashikawa 4-3-1 Tsunashima East, Kohoku Ward, Yokohama City, Kanagawa Matsushita Communication Industrial Co., Ltd. (56) References 6-231526 (JP, A) JP 10-106115 (JP, A) JP 8-221870 (JP, A) JP 10-106114 (JP, A) JP 8-180566 (JP, A) JP-A-10-21628 (JP, A) JP-A-4-178991 (JP, A) JP-A-6-259869 (JP, A) JP-A-8-249779 (JP, A) JP-A-6 −28762 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G 11B 17/26 G11B 17/30

Claims (13)

(57) [Claims] 1. A disk and rotating means for rotating the motor as a rotation drive source, and Turn-down table support means for holding the turntable rotatably, by holding the disk on the turntable of the turntable supporting means Disk guide means for transporting the disk , and one end driven by the rotating means.
First drive for driving the turntable support means to the side
Second part for driving the disk guide means on the other end side
A rotary plate that meshes with the drive part of the
A disc changer device comprising: 2. A spiral cam means which is rotated by being driven by a rotating means, and a tray opening means which opens a leg between a plurality of stacked predetermined trays by the cam means. 1. The disc changer device according to 1. 3. A disk is reproduced by inserting a turntable supporting means between the trays opened by the tray opening means and clamping the disk on the turntable of the turntable supporting means. 2. The disc changer device described in 2. 4. A turntable support means is constituted by a rotatable substrate rotatably supported and an optical pickup chassis held by the rotatable substrate via a damper, and the function of the damper is disabled. 2. The disk according to claim 1, further comprising: a lock unit for mechanically fixing the optical pickup chassis to the rotating substrate; and a lock control unit driven by the rotating unit to lock or unlock the lock unit. Changer device. 5. A first and a second disc regulating means, into which a center hole of the disc accommodated in the disc mounting means can be inserted, are arranged to face each other, and the first disc regulating means is driven by a rotating means. 2. The disk changer device according to claim 1, further comprising means for moving the second disk restricting means close to and away from each other. 6. A groove is formed in a part of an outer peripheral portion of a rotating body which is rotationally driven by a rotating means, and a part of a lever pivotally supported by a fixed part is brought into contact with the outer peripheral portion of the rotating body. 2. The disc changer device according to claim 1, further comprising disc insertion opening opening / closing means for opening / closing the disc insertion opening by vertically moving the lever. 7. A sliding means is provided which is slid by being driven by the rotating means, and the spiral cam means is rotated in accordance with the sliding operation of the sliding means, and is housed in the disk mounting means. The first and second disc restricting means, into which the center hole of the disc can be inserted, are arranged so as to face each other, and the first disc restricting means approaches the second disc restricting means in accordance with the sliding operation of the sliding means. .Claim 2 comprising means for separating
The described disc changer device. 8. A gear having a gear part meshing with a tooth part of the sliding means and having a spiral groove formed on an outer peripheral part thereof,
8. The disc changer device according to claim 7, wherein the first disc regulating means is constituted by a cylindrical body having an inner peripheral surface formed with a pin to be inserted into the groove of the gear. 9. A plurality of trays held so as to be vertically movable, a spring means for stacking the plurality of trays, and an elevator means for vertically moving a disk mounting means integrated by the spring means. The disc changer device according to claim 1, further comprising: 10. The disc changer device according to claim 9, comprising an elevator means for moving a disc mounting means up and down by rotating a cam gear having a spiral groove engaged with an outer peripheral portion of the tray. 11. The rotating means is driven and the disk push-out means for issuing press one disk from the disk mounting means, the lever for pressing has been rotated by a disk which is extruded by the disc push-out means When, according to claim 9; and a disc detecting means for detecting the rotation of the lever
Alternatively, the disc changer device according to claim 10 . 12. The disc changer device according to claim 1, wherein an optical pickup is slidably supported by the turntable support means. 13. A first and a second disk holding means supported by a supporting substrate so as to be slidable up and down, and a first and a second disk holding means supported by the supporting substrate so as to be slidable in a lateral direction. 2. The disc changer device according to claim 1, wherein the disc guide means is constituted by a cam plate in which first and second cam grooves into which the pins are inserted.