JPH0512815A - Disk device - Google Patents

Abstract

PURPOSE:To provide a disk device capable of the miniaturization of a mechanical system without the deformation of a disk-tray. CONSTITUTION:The disk-tray 3 is provided with an opening part 73 opening to an inner side and parts 63 and 63' which have grooves engaged with guide- shafts 43a and 43b for moving and inforcing the disk-tray 3 at the both sides of the opening part 73. This guide-shafts 43a and 43b are set parallel to a loading direction, and while loading, the disk-tray 3 is moved in a state that the guide-shafts 43a and 43b are engaged with grooves 63 and 63' provided on the disk-tray 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc device for reading information recorded on an information recording disc with a pickup.

[0002]

2. Description of the Related Art Conventionally, a device capable of continuously reproducing a disc on which information is recorded on both sides by a single pickup,
For example, JP-A-62-287476 (G11B 2
1/02) and JP-A-63-288476 (G1)
1B21 / 02) and the like.

FIG. 7 is an external view of a main part of a conventional optical disc player, showing a state in which a disc tray is taken out from a cabinet. A disc tray (disc mounting means) 3 for setting a disc in a front opening 1b of a front panel 1a of a cabinet 1 is horizontally movable between a storage position and a pull-out position.

FIG. 8 is a perspective view of a main part of a conventional pickup feeding mechanism (pickup moving means), in which a pickup 4 and a feed motor 5 are fixed on a movable base 6. A bracket 7 is adhered to the right end of the movable base 6, and a gear 8 is fixed to the motor shaft through the bracket 7. A pinion 9 that meshes with a gear 8 is pivotally supported on the bracket 7. Two rollers 10 and 11 are pivotally supported on the left side surface of the movable base 6.

Reference numeral 12 is a rack that meshes with the pinion 9, and is a lower linear portion 12 extending horizontally on the lower chassis.
a, an upper linear portion 12c that extends on the lower surface of the upper chassis in parallel with the lower linear portion 12a, and a U-shaped connecting portion 12b that connects both linear portions. A guide groove (not shown) into which the pinion shaft 9a can be loosely fitted extends in a U-shape on the inner surface of the connecting portion 12b.

Reference numeral 14 denotes a guide rail on which the rollers 10 and 11 slide, and like the rack 12, a lower linear portion 14
a, an upper linear portion 14c, and a connecting portion 14b that connects both linear portions. The rack 1 is provided on the inner surface of the connecting portion 14b.
Similar to 2, the shaft (not shown) of the roller 10 is formed with a guide groove 15a which can be loosely fitted, and the sliding surfaces of the rollers 10 and 11 are formed with a roller guide groove 15b.

Reference numerals 16 and 17 denote columnar guide poles fixed to the lower and upper chassis 20 and 21, and are arranged in parallel with the linear portions of the rack 12 and the guide rail 14. The guide poles 16 and 17 are screwed and fixed on the chassis by screws (not shown) with a cylindrical fixing member 18 interposed between the guide poles 16 and 17.

On the lower surface of the movable base 6, the guide pole 1
Although a fitting hole 19 for fitting with 6, 7 is formed, the lower side of the fitting hole 19 is cut out for the escape of the fixing member 18.

Therefore, the pickup 4 moves the rack 12 and the guide rail 14 by the pickup feeding mechanism.

A disc (not shown) placed on the disc tray 3 has upper and lower linear portions 12c, 14c and 12 respectively.
After being housed between a and 14a, it is clamped by a turntable 26 and a clamper 22 (not shown).

As shown in FIGS. 7 and 9, on both sides of the disc tray 3, there are guide grooves 131 into which guide rollers 34a and 34b projecting from inner surfaces of both side plates of a tray holder (not shown) are fitted. 132 is recessed. As a result, the disc tray 3 guides the reciprocating movement on the tray holder. On the back surface of the disc tray 3, a rack 180 (disc tray moving unit) with which the loading gear 39 (disc tray moving unit) meshes is formed along the moving direction of the disc tray 3. Therefore, the loading gear 35 is driven by the loading motor 35 (disc tray moving means) provided on the tray holder.
9 drives and the disc tray 3 moves.

Further, the disc tray 3 is formed with an opening 73 'through which the turntable 26 is exposed, and the disc tray 3 is connected to the opening 73' of the disc tray 3 so that the tray itself is not deformed. A connecting portion 74 is provided.

A large-diameter disk mounting portion 135 and a small-diameter disk mounting portion 136 are formed on the surface of the disk tray 3. On both sides of the disc tray 3, cutouts 133 and 134 are provided so that the outer peripheral end of the large-diameter disc is placed on the large-diameter disc mounting portion 135. Further, the large-diameter disc mounting portion 135 has a window 1 for pushing up when taking out a small-diameter disc.
30 have been opened.

However, in the structure of the above-mentioned conventional example, as shown in FIG. 10, the movable base 6 has the connecting portion 12b,
In order to prevent the connecting portion 74 from coming into contact with the connecting portion 74 when passing through 14b, it is necessary to arrange the connecting portions 12b and 14b behind the connecting portion 74, which makes it difficult to downsize the mechanical system. Further, the upper portion of the connecting portion 74 and the clamper 22.
The distance A in the lower part, the distance B in the lower part of the connecting part 74 and the upper part of the shaft 23 'of the spindle motor 23, or the connecting part 7
The distance C between the lower part of 4 and the upper part of the pickup 4 is also limited,
It was difficult to downsize the mechanical system.

[0015]

In view of the above problems, the present invention provides a disk device in which the mechanical strength of the disk tray is sufficient and the mechanical system can be downsized.

[0016]

SUMMARY OF THE INVENTION According to the present invention, a disc tray for carrying a disc, a disc tray moving means for moving the disc tray, a turntable on which the disc is placed and integrally rotated, and a signal from the disc. In a disc device provided with a pickup for reproducing and a pickup moving means for moving the pickup, the disc tray has an opening portion on one side where a turntable is exposed and an opening portion on the back surface of the disc tray. It is characterized in that movable means are provided on both sides, and the movable means move guide shafts arranged below the disc tray in parallel with each other.

[0017]

According to the above construction, since the disc tray is provided with the opening having one side opened, the disc tray and the pickup do not interfere with each other when the pickup moves, and the disc tray is When moved, restrictions on the positional relationship between the disc tray and the pickup or turntable can be reduced. Further, since movable means are provided on both sides of the opening of the disc tray and the guide shaft is moved by the movable means, the deformation of the disc tray itself can be prevented.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Here, we use a disc recording method that records a high-definition video signal in a wide band as it is in the base band, divides the high-definition video signal into two channels, and records each signal on both sides of the disc, and from both sides of the disc during playback. Signal reproduction is simultaneously performed, and the respective reproduction signals are combined to restore the original high-definition video signal. Therefore, two pickups are provided for reproducing the signals recorded on both sides of the disc. The same parts as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

FIG. 1 is a perspective view of an essential part showing the disc tray 3. Reference numeral 73 is an opening through which the turntable 26 is exposed, and the opening 73 is not provided with a conventional connecting portion 74, but one is open.

FIG. 2 is a perspective view of an essential part showing an auxiliary guide portion (disc reinforcing means) for loading the disc tray 3. Reference numerals 43a and 43b denote tray moving guide shafts arranged in parallel for moving the disc tray 3, and are fixed by support shafts 53a and 53b arranged on the lower chassis 20. 63, 63,
Reference numerals 63 'and 63' denote tray moving movable bases (movable means), which are provided with shaft grooves 63c, 63c, 63c ', and 63c' that fit into the tray moving guide shafts 43a and 43b. The tray moving movable tables 63, 63, 6
3'and 63 'are fixed to the back surface of the disc tray 3 (see FIG. 1). By the conventional loading mechanism, the tray moving movable bases 63, 63, 63 ', 63' move on the tray moving guide shafts 43a, 43b, and the disc tray 3 is loaded.

Next, a series of mode states of the disc player configured as described above will be described with reference to the flowchart of FIG.

First, when the trayout switch 101 for projecting the disc tray 3 from the main body is turned on, a command is issued from the system controller (syscon) 100 to a motor control section (not shown), and the loading motor 35 is driven. By driving the loading motor 35,
The tray moving movable bases 63, 63, 63 ', 63' move the tray moving guide shafts 43a, 43b to move the tray moving movable bases 63, 63, 63 ', 63' on the tray protruding side. Movable bases 63 ', 63' are separated from the tray moving guide shafts 43a, 43b,
As shown in FIG. 4, the turntable 3 is in a state of protruding from the disc player main body. At this time, one pickup 4 is located in the lower linear portions 12a and 14a, and the other pickup 4 is located in the connecting portions 12b and 14b.

Next, when the tray-in switch 102 for storing the disc tray 3 in the main body is turned on, the system controller 10 is turned on.
A command is output from 0 to a motor control unit (not shown) to drive the loading motor 35. When the loading motor 35 is driven, the tray moving movable table 63,
63 moves the tray moving guide shafts 43a and 43b, and thereafter, the shaft grooves 63c ′ and 63c ′ of the tray moving movable bases 63 ′ and 63 ′ are fitted to the tray moving guide shafts 43a and 43b, and then the tray moves. The movable tables 63 ′ and 63 ′ for movement also include the guide shaft 43a for tray movement,
43b is moved, and the turntable 3 is housed between the linear portions 12a and 14a and 12c and 14c as shown in FIG. Then, a command is issued from the system controller 100 to a control unit (not shown) that controls a conventionally known moving mechanism 37 that raises the spindle motor 23, the rack 12, the guide rail 14, and the pickups 4 and 4 integrally, and the conventionally known method is used. The moving mechanism 37 is driven. This moving mechanism 3
7 drives the turntable 2 and the spindle motor 23 for rotationally driving the same to vertically raise the disk drive device, penetrates the opening 73 of the tray 3 and passes through the center of the turntable 2. While fitting the center hole (not shown) of the disc 25 in (not shown), the lower surface of the disc 25 is placed in contact with the upper surface of the turntable 2, and the disc 25 is separated from the tray 3 to separate the clamper 22. The disk 25 is clamped between the turntable 26 and the turntable 26, and at the same time, the rack 12 on which the pickups 4 and 4 are mounted and the guide rail 14 are also vertically raised. Thereafter, the system controller 100 issues a command to the control unit that controls the spindle motor 23, the spindle motor 23 rotates, and a command is also issued to the control unit that controls the feed motors 5 and 5 to drive the feed motors 5 and 5. As a result, one of the pickups 4 and 4 moves to the upper linear portions 12c and 14c, and the other pickup 4 moves to the lower linear portion 12c.
a, 14a. After that, both pickups 4 and 4 detect and move the innermost circumference of the disc shown in FIG.

Next, when the reproduction ON switch 103 is input, the feed motors 5 and 5 are driven via the motor control section in accordance with the command from the syscon 100, and the two pickups 4 and 4 are opposed to each other via the disc 25. The signal is read from the inner circumference side while moving from the inner circumference side to the outer circumference side while holding. In this way, the respective reproduction signals obtained from both sides of the disk 25 are combined into one by a signal processing circuit (not shown) and restored to the original information.

Next, from the above state, the reproduction off switch 10
After the input of 4, the input is supplied to the syscon 100, and the feed motors 5 and 5 are driven via the motor control unit in accordance with the command of the syscon 100 so that both pickups 4 and 4 are kept facing each other via the disc 25. While moving to the inner circumference side, it stops at a predetermined position. After that, Syscon 10
The spindle motor 23 is stopped via the motor control unit by the command of 0.

Next, when the input of the power-off switch 105 is supplied to the syscon 100, the feed motors 5 and 5 are controlled in accordance with the command of the syscon 100 via the motor control unit for controlling the feed motors 5 and 5 as described above. The respective feed motors 5 and 5 are driven, and the pickups 4 and 4 are connected to the connecting portions 12b and 14b and the lower linear portion 12 respectively.
a, 14a, and returns to the initial position. After that, the command from the system controller 100 is sent by the well-known moving mechanism 37 via the control section to the disk drive device including the turntable 22 and the spindle motor 21 (rotation stopped state), the rack 12, the guide rail 14, the pickup 4,
4 is lowered vertically, and the lower surface of the disk 25 is placed in contact with the tray 3.

With the above-mentioned structure, the disc tray 3 is movable on the tray moving guide shafts 43a, 43b.
Since the disc tray 3 is fixed to 3'and 63 'and the disc tray 3 is not likely to be deformed, it is not necessary to provide the connecting portion 74 in the opening 73 of the disc tray 3 as in the conventional case. As can be seen, when the pickup 4 moves the connecting portion 74, the disc tray 3 and the pickup 4 do not interfere with each other, and when the disc tray 3 moves, the disc tray 3 and the spindle motor 4, the clamper 22 or the pickup 22 or the pickup. No interference with 4.
Therefore, the size of the disc player can be easily reduced.

In the above embodiment, a special disc is constructed to reproduce information by using two pickups. For example, a disc in which information is continuously recorded from one surface to the other surface is used. The information may be reproduced by using two pickups, or the information may be reproduced by only one pickup.

Further, in the above embodiment, the turntable, the spindle motor and the pickup are integrally raised when the disc is mounted on the turntable.
Instead of this, the turntable and the spindle motor may be integrally raised, or the tray may be configured to be lowered after being horizontally moved, which can be appropriately changed.

Further, the disc tray and the tray moving movable base may be integrally formed, or a shaft hole may be used instead of the shaft groove fitted with the tray moving guide shaft. Further, the movable tray-moving bases may be provided one on each side of the opening, and can be appropriately changed.

That is, since the disc tray has the opening, the reinforcing means may be provided on both sides of the opening in order to prevent the resulting deformation.

[0032]

According to the present invention, it is possible to provide a disk device in which the mechanical strength of the disk tray is sufficient and the mechanical system can be downsized.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a disc tray according to an embodiment of the present invention.

FIG. 2 is a perspective view of a main part showing an auxiliary guide part of a disc tray according to an embodiment of the present invention.

FIG. 3 is a diagram showing a flowchart according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view of essential parts showing a disc tray protruding state according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view of essential parts showing a disc tray stored state according to an embodiment of the present invention.

FIG. 6 is a cross-sectional view of essential parts showing a reproduction state according to an embodiment of the present invention.

FIG. 7 is a perspective view of a disc tray removed from a cabinet according to a conventional example.

FIG. 8 is a sectional view of a main part of a pickup feeding mechanism according to a conventional example.

FIG. 9 is a rear view of a disc tray that constitutes a loading mechanism according to a conventional example.

FIG. 10 is a cross-sectional view of essential parts showing a state in which a disc tray is stored according to a conventional example.

[Explanation of symbols]

25 disc 4 pickup 5 feed motor (pickup moving means) 9 pinion (pickup moving means) 10, 11 roller (pickup moving means) 12 rack (pickup moving means) 14 guide rail (pickup moving means) 26 turntable 3 disc tray 34a , 34b Guide roller (disk tray moving means) 131, 132 Guide groove (disk tray moving means) 35 Loading motor (disk tray moving means) 73 Openings 43a, 43b Tray moving guide shaft 63 Tray moving movable table (movable means)

Claims (1)

Claim: What is claimed is: 1. A disk tray for carrying a disk,
A disc device comprising: a disc tray moving means for moving the disc tray; a turntable on which the disc is placed and rotating integrally; a pickup for reproducing a signal from the disc; and a pickup moving means for moving the pickup, The disc tray is provided with an opening opening on one side where the turntable is exposed and movable means on both sides of the opening on the back surface of the disc tray, and the movable means are arranged below the disc tray in parallel with each other. A disk device, wherein the guide shaft is moved.