JPH0626043U - Recording medium reproducing apparatus and recording apparatus - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the chucking accuracy between the disk accommodated in the cartridge and the table on which the disk is placed. [Structure] A disk device including a holder 7, a turntable 4, a cleaning member 10, a plate 15, and a detection switch 19. The cleaning member is configured to be interlocked by utilizing the pushing force of the cartridge 92 containing the disk. The cartridge is stored in the holder and the disc is placed on the table 4. Immediately before this chucking, dust adhering to the table 4 is removed by a cleaning member. Therefore, the chucking accuracy can be improved, the situation in which the disk cannot be read does not occur, and the disk device can be used satisfactorily. At the time of cleaning, the plate 15 is pushed up by the cleaning member to turn on the switch 19 and the table 4 rotates, so that the number of times of cleaning is substantially increased, dust can be more completely removed, and chucking accuracy can be further improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a recording medium reproducing apparatus and a recording apparatus for accommodating a recording medium and reproducing and recording the same.

[0002]

[Prior art]

 It has been proposed to accommodate a disc, which is a storage medium, in a cartridge. FIG. 6 shows an example thereof. In the figure, 90 is a disk, and this disk 90 is a storage medium on which data has already been recorded by, for example, magneto-optical means. The amount of information for a predetermined time is recorded by the information compression technique.

Reference numeral 92 is a plastic reproduction-only cartridge, and the disk 90 is housed in the cartridge 92. A hole 93 for exposing the clamping plate 91 of the disk 90 is formed in the center of the lower surface of the cartridge 92.

The disk 90 is formed of, for example, polycarbonate resin. The clamping plate 91 is formed of a magnetic plate such as a metal plate.

A shutter window 94 is formed on the lower surface of the cartridge 92. A shutter 95 for opening or closing the shutter window 94 is slidably attached to the cartridge 92. Incidentally, 96 is a label, and this label 96 is attached to the upper surface of the cartridge 92.

Then, in the disc device for reproducing the disc 90 shown in FIG. 6, for example, a holder for accommodating the cartridge 92 and a turntable for mounting the disc 90 accommodated in the holder are arranged.

Further, as shown in FIG. 7, when mounting the disc 90 on the turntable 4, for example, the protrusion 6 of the turntable 4 is fitted into the hole 90 a of the disc 90. The contact of the contact surface 90b of the disk 90 with the mounting surface 5 of the turntable 30 positions the disk 90.

In this case, the magnet M is arranged on the protrusion 6, and the clamping force of the clamping plate 91 is surely attracted to the turntable 4 side by the magnetic force of the magnet M. As a result, the disk 90 is fixed (chucking). Note that FIG. 7A is a diagram showing a chucking state of the disc 90 of FIG.

Further, the turntable 4 is configured such that a slight gap is formed between the protrusion 6 on which the magnet M is arranged and the clamping plate 91 during chucking. By doing so, a large pulling force and holding force can be obtained with a small magnetic force.

[0010]

[Problems to be solved by the device]

 By the way, since dust or the like, especially metal M or the like T enters the inside of the holder of the disk device by the magnet M, a gap between the protrusion 6 on which the magnet M of the turntable 4 is arranged and the clamping plate 91. It may be attached to the gap. In this case, if the disc 90 is placed on the turntable 4 as it is, the disc 90 is tilted as shown in FIG. 7B, and the chucking accuracy is deteriorated.

An optical pickup is arranged in the disc device so as to correspond to the shutter window 94 (disc 90). The data recorded on the disc 90 is read out through this optical pickup or the like. In order for this optical pickup to obtain accurate data from the disc 90, the disc 90 is in a predetermined position, that is, the disc 90 is horizontal. It is necessary to arrange so as to be in the state (state shown in FIG. 7A).

Therefore, when the disk 90 is in a slightly tilted position (for example, in a micro unit) (for example, the state shown in FIG. 7B), that is, when the chucking accuracy is poor, information can be read from the disk 90. It may disappear.

Therefore, an object of the present invention is to improve the chucking accuracy between a disk, which is a recording medium, such as a cartridge, and a table on which the disk is placed.

[0014]

[Means for Solving the Problems]

 In this invention, a holder for storing a recording medium, a table for mounting the recording medium stored in the holder, a detection means for detecting the loading time for storing the recording medium in the holder, and a cleaning mechanism for cleaning the table are provided. The detection means detects the loading of the recording medium to rotate the table, and at the same time, the cleaning mechanism is configured to interlock with the loading of the recording medium.

[0015]

[Action]

 The cleaning mechanism 10 operates at the time of loading to store a disk 90, which is a recording medium, in the holder 7. The cleaning mechanism 10 cleans the table (turn table) 4. The disk 90 is housed in the holder 7 and the disk 90 is placed on the turntable 4, that is, chucked. Even if the turntable 4 has dust T or the like adhered to the turntable 4, the cleaning mechanism 10 removes the dust T or the like from the turntable 4. Is adhered, the disk 90 does not tilt due to dust T, and the chucking accuracy can be improved. Therefore, the situation that the information cannot be read or written from the disc 90 does not occur, and the reproducing apparatus and the recording apparatus can be used favorably.

When the detecting means 19 detects the operation of the cleaning mechanism 10, the turntable 4 rotates during the cleaning of the cleaning mechanism 10. Therefore, since the cleaning effect is substantially increased, the dust and the like on the turntable 4 can be more completely removed, and the chucking accuracy can be further prevented from lowering.

[0017]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a diagram showing a main part of a cleaning mechanism of a disk device. The disc device is used when reproducing the disc 90 shown in FIG.

In FIG. 1, reference numeral 1 is a chassis of a disk device, and a motor 2 is fixed to the chassis 1 with screws 3. A turntable 4 is fixed to the motor shaft 2a of the motor 2. It should be noted that the motor 2 is arranged at a portion where the disc 90 and the turntable 4 correspond to each other when the cartridge 92 is housed in the holder 7 described later.

A mounting surface 5 is formed on the turntable 4, and the mounting surface 5 has a circular shape having a size substantially corresponding to the contact surface 90b of the disk 90 shown in FIG. Further, the mounting surface 5 is provided with a projection 6 concentrically with the mounting surface 5. A magnet M is arranged on the protrusion 6 and is formed to have a size substantially corresponding to the hole 90a of the disk 90 shown in FIG. As shown in FIG. 7A, the turntable 4 is configured so that there is a slight gap between the protrusion 6 and the clamping plate 91.

Reference numeral 7 is a holder, and the holder 7 is arranged so as to be movable up and down with respect to the chassis 1. The holder 7 is formed in a frame shape by an upper plate 7a, a lower plate 7b and a pair of side plates 7c (only one is shown in the figure). Further, the holder 7 has a frame-shaped holding portion 8 having a size corresponding to the shape of the cartridge 92 shown in FIG. 6, that is, the thickness and width.

The holder 7 is formed with an insertion portion 9 having an eight-shaped cross section on one end side thereof. Further, the holder 7 is formed with a cutout 7d at a portion of the lower plate 7b thereof corresponding to the turntable 4. The notch 7d is formed as an escape for the turntable 4 when the holder 7 descends.

Further, the holder 7 has a guide groove 7e formed in the upper plate 7a thereof. The guide groove 7e is formed with a lateral width corresponding to a supporting portion 11 of the cleaning member 10 described later. Further, the guide groove 7e is formed to be longer than the distance that the cleaning member 10 slides when the cartridge 92 is stored in the hold portion 8.

A cleaning member 10 cleans the upper surface of the mounting surface 5 of the turntable 4 when the cartridge 92 is inserted into the holding portion 8. The cleaning member 10 includes a support portion 11, a brush portion 12, and a connecting portion 13.

The support portion 11 is formed in a plate shape and is arranged over the upper plate 7a and the lower plate 7b of the holder 7. The tip of the support portion 11 is always located immediately in front of the turntable 4. That is, the tip of the support portion 11 abuts on the other end side surface of the lower plate 7b of the holder 7 (the surface of the notch 7d on the insertion portion 9 side), and the vicinity of the center of the support portion 11 is on the holder 7. It abuts on the other end side surface of the plate 7a (the surface of the guide groove 7e on the insertion portion 9 side).

The connecting portion 13 is formed in a substantially L shape, and is connected from the center of the supporting portion 11 along the longitudinal direction of the holder 7 (the insertion direction of the cartridge 92). As shown in FIG. 1, the connecting portion 13 is set such that its upper surface is always in contact with the upper plate 7a of the holder 7 and its tip is positioned near the insertion portion 9 and in front thereof. When the cartridge 92 is inserted, the tip of the connecting portion 13 comes into contact with the tip of the cartridge 92.

Reference numeral 14 denotes a spring. The spring 14 is hooked on the insertion portion 9 on the upper plate 7 a side of the holder 7 and the base end of the support portion 11 of the cleaning member 10. The spring 14 always biases the cleaning member 10 toward the insertion portion 9 side.

Reference numeral 7f is a locking portion, and this locking portion 7f is for positioning the cartridge 92 in the holding portion 8. The locking portions 7f are provided so as to face the pair of left and right side plates 7c, respectively. Further, although not shown, the holder 7 is provided with a locking member for locking the cartridge 92 to the holding portion 8.

Reference numeral 15 is a plate for detecting loading or unloading of the cartridge 92, and the plate 15 is slidably arranged. Further, the plate 15 is arranged so as to face the turntable 4, and a taper surface 16a of the head portion 16 described later always corresponds to the end portion 11a of the support portion 11 of the cleaning member 10, and the end portion It is arranged so as to be located in the sliding direction of 11a.

The head 16 extends in a direction orthogonal to the longitudinal direction of the plate 15. Further, the head portion 16 is formed with tapered surfaces 16a and 16b on both sides thereof and a contact surface 16c at the tip thereof. The tapered surfaces 16a and 16b are tapered from the contact surface 16c toward the base end, which is longer than the lateral width of the contact surface 16c. Then, the tapered surface 16a and the end portion 11a of the support portion 11 are always in contact with each other. The contact surface 16c is set to be slightly longer than the diameter of the mounting surface 5 of the turn table 4.

A long hole 15a is formed in the plate 15 near the edge thereof. The long hole 15a is formed along the longitudinal direction of the plate 15. The long hole 15a is set to have a length substantially the same as the sliding distance of the plate 15, that is, the distance by which the plate 11 is pushed up from the tapered surface 16a to the contact surface 16c by the end 11a of the supporting portion 11.

Reference numeral 17 denotes an engaging piece, and the engaging piece 17 is provided so as to project from a portion corresponding to the long hole 15a of the plate 15 of the mechanical chassis (not shown). Then, the engagement piece 17 is fitted into the elongated hole 15a of the plate 15 to regulate the movement of the plate 15.

Reference numeral 18 is a spring, and the spring 18 is mounted between the plate 15 and the mechanical chassis. The spring 18 constantly biases the plate 15 toward the holder 7.

A detection switch 19 detects the loading or unloading of the cartridge 92 and supplies a detection signal to a servo circuit 23 (see FIG. 5) described later. The detection switch 19 includes a movable terminal 19b having an operating portion 19a and a fixed terminal 19c, and is configured so that the detection switch 19 is turned on when the movable terminal 19b and the fixed terminal 19c contact each other.

The detection switch 19 is arranged so that the operation portion 19 a thereof is always in contact with the base end portion 15 b of the plate 15. Further, in the detection switch 19, the movable terminal 19b becomes the fixed terminal 19c only when the plate 15 is pushed up by the end 11a of the supporting portion 11 of the cleaning member 10 and the end 11a and the contact surface 16c contact each other. It is configured to touch (see Figure 2). Therefore, except in this case, the detection switch 19 is off.

An example of reproduction signal processing of the disk device will be described. FIG. 5 is a block diagram relating to reproduction signal processing of the disk device.

In the figure, 2 is a motor for the disk 90. The Tmax of the EFM-modulated digital reproduction signal, that is, the time length of the maximum inversion interval is constantly measured, and the rotation of the motor 2 is controlled so that the disk 90 is always rotated at a constant linear velocity.

The output from the non-contact type optical pickup 21 is amplified by the RF amplifier 22 and then supplied to the servo circuit 23 to form servo signals such as a focus error signal and a tracking error signal. Then, each servo signal is supplied to the optical pickup 21, the feed motor 24 for the optical pickup 21, and the motor 2.

The main signal output from the RF amplifier 22 is supplied to the signal processing system 25 as it is and subjected to various conventionally known processes, and then the digital audio signal is supplied to the D / A converter 26. Then, this digital audio signal is converted into an analog audio signal by the D / A converter and supplied to the output terminal 27.

Reference numeral 28 denotes a system controller, which operates the input key 29 to cause the disk device to perform a predetermined operation. That is, the system controller 28 controls the operations of the signal processing system 25 and the servo circuit 23 based on the operation signal of the input key 29.

Further, the system controller 28 causes the display unit 30 to display the accumulated reproduction time read from the subcode, the program number, and the like.

In this example, when the cartridge 92 is inserted into the hold portion 8 with the cartridge 92 facing the insertion portion 9 of the holder 7 (the state shown by the chain double-dashed line in FIG. 1), the cleaning member 10 2, slides toward the locking portion 7f against the biasing force of the spring 14.

Then, the plate 15 is regulated by the end portion 11 a of the support portion 11, so that the plate 15 is pushed up against the biasing force of the spring 18. As a result, the detection switch 19 is turned on, and the turntable 4 is rotationally driven before cleaning, that is, immediately before the brush 12 comes into contact with the mounting surface 5.

The turntable 4 rotates while the end portion 11 a and the contact surface 16 c of the plate 15 are in contact with each other, that is, while the brush portion 12 is cleaning the mounting surface 5. That is, by moving the brush portion 12, for example, dust T of the metal powder or the like (see FIG. 7B) attached to the upper surface of the protrusion 6 on which the magnet M is arranged is removed.

Further, when the cleaning member 10 slides, the end 11a moves to the tapered surface 16b via the contact surface 16c, so that the plate 15 is pushed down by the urging force of the spring 18. As a result, the detection switch 19 is turned off and the rotation of the turntable 4 is stopped.

Then, in the state where the cartridge 92 is housed in the hold portion 8, as shown in FIG. 3, the tip of the cartridge 92 is brought into contact with the locking portion 7f and positioned. Further, in this state, the cartridge 92 is locked by a locking member (not shown). The cleaning member 10 is locked with the cartridge 92 locked, as shown in FIG.

In the state shown in FIG. 3, the holder 7 is lowered by an elevating means (not shown) and moved from the position indicated by the two-dot chain line in FIG. 4 to the position indicated by the solid line. This movement causes the turntable 4 and the disk 90 housed in the cartridge 92 to be chucked (see FIG. 7A).

Then, for example, when a play button (not shown) is operated to enter the play state, the operation of the servo circuit 23 is controlled based on the operation signal of the input key 29, so that the mounting surface 5 of the turntable 4 (see FIG. 7A). ) Contacts the contact surface 90b of the disk 90 to control the rotation of the motor 2. At the same time, the feed motor 24 operates to slide the optical pickup 21.

Then, as shown in FIG. 5, the output from the optical pickup 21 is converted into an analog audio signal through an RF amplifier 22, a signal processing system 25 and a D / A converter 26, and is supplied to an output terminal 27. It On the other hand, the display unit 30 displays the accumulated reproduction time, the program number, and the like.

By operating a skip button (not shown), the song order can be forward skipped or back skipped. In addition, reproduction is stopped by operating a stop button (not shown).

When an eject button (not shown) is operated, the holder 7 moves up from the position shown by the solid line in FIG. 4 to the position shown by the chain double-dashed line. Simultaneously with this rise, for example, a locking member (not shown) that locks the cartridge 92 to the holding portion 8 is released, and the cleaning member 10 is automatically inserted by the urging force of the spring 14. Slide to side 9. Also at this time, as shown in FIG. 2, the brush portion 12 cleans the upper surface of the mounting surface 5 of the turntable 4. In this case, an operation button for releasing the locking between the locking member and the cartridge 92 may be provided.

When the cleaning member 10 slides, the cleaning member 10 is pushed by the sliding member 10 and the cartridge 92 is automatically ejected from the holding unit 8 (see FIG. 2).

When the cleaning member 10 is returned to the position shown in FIG. 1, the cartridge 92 is held in a horizontal state at a loading port of a cabinet (not shown).

According to this example, the cleaning member 10 is configured to interlock with loading or insertion of the cartridge 92. Therefore, the cleaning, that is, the magnet M of the turntable 4 is arranged at an appropriate time immediately before chucking. The dust 12 of metal powder adhering to the upper surface of the protrusion 6 can be removed by the brush 12. Therefore, according to this example, dust or the like T does not adhere to the placement surface 5 of the turntable 4, particularly the upper surface of the protrusion 6 on which the magnet M is arranged, and the disc 90 is tilted by the dust or the like T during chucking. As a result, the chucking accuracy can be improved, and the situation in which the information cannot be read from the disk 90 does not occur, and the disk device can be used satisfactorily.

Further, according to this example, since the cartridge 92 moves together with the slide of the cleaning member 10, the cleaning member 10 can also be used as a discharging device of the cartridge 92.

Further, according to this example, since the turntable 4 rotates during cleaning, the number of times of cleaning can be substantially increased. Therefore, according to this example, since the dust and the like adhering to the mounting surface 5 can be more completely removed, the chucking accuracy can be further improved.

In the above embodiment, the cleaning member 10 constituting the cleaning mechanism is configured to interlock with the insertion and ejection of the cartridge 92 accommodating the disk 90 as a recording medium. The mechanism is not limited to this. For example, a mechanism provided with a cleaning operation button and operated by operating this operation button can be similarly applied.

Further, in the above-mentioned embodiment, the reproduction-only disk device is shown, but the same can be applied to a recording device or a recording / reproducing device.

Further, in the above-described embodiment, the disc device that stores the cartridge 92 in the holder 7 is shown, but the disc device is not limited to this, and for example, a disc device in which only the disc can be mounted is also the same. Applicable.

The present invention can be applied not only to the disk device but also to any reproducing device or recording device having a table on which a recording medium is placed.

[0060]

[Effect of device]

 According to this invention, since the cleaning mechanism for cleaning the table is provided, even when dust or the like is attached to the table, the cleaning mechanism can remove the dust or the like on the table. Therefore, according to the present invention, dust or the like does not adhere to the table at the time of loading, and the disc is not tilted by the dust or the like, so that the chucking accuracy can be improved, so that the information can be read or written from the recording medium. It is possible to use the playback device and the recording device satisfactorily without the situation of being unable to perform.

Further, according to this invention, since the table is configured to rotate in association with the cleaning mechanism by the detecting means, the table rotates during cleaning, so that the number of times of cleaning can be substantially increased. Therefore, according to this invention, the dust and the like on the table can be removed more completely, so that the chucking accuracy can be further improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a main part of an embodiment.

FIG. 2 is a diagram showing a usage state of the embodiment.

FIG. 3 is a diagram showing a usage state of the embodiment.

FIG. 4 is a diagram showing a usage state of the embodiment.

FIG. 5 is a block diagram relating to reproduction signal processing according to the embodiment.

FIG. 6 is a diagram showing a disc.

7 is a diagram showing a chucking state of the disc of FIG.

[Explanation of symbols]

 4 Turntable 5 Mounting surface 7 Holder 10 Cleaning member 11a End 12 Brush 15 Plate 16a, 16b Tapered surface 16c Contact surface 18 Spring 19 Detection switch 90 Disc 90b Contact surface 92 Cartridge M Magnet T Dust, etc.

Claims (2)

[Scope of utility model registration request] 1. A holder for accommodating a recording medium, a table for accommodating the recording medium accommodated in the holder, a detection means for detecting a loading time for accommodating the recording medium in the holder, and the table. A cleaning mechanism for cleaning, wherein the detection means detects the loading of the recording medium to rotate the table, and the cleaning mechanism is configured to interlock with the loading of the recording medium. Recording medium reproducing device. 2. A holder for accommodating a recording medium, a table for accommodating the recording medium accommodated in the holder, a detecting means for detecting a loading time for accommodating the recording medium in the holder, and the table. A cleaning mechanism for cleaning, wherein the detection means detects the loading of the recording medium to rotate the table, and the cleaning mechanism is configured to interlock with the loading of the recording medium. Recording medium recording device.