JPH0887802A - Changer - Google Patents

Abstract

PURPOSE: To always stop a carrier accurately at an assigned position regardless of variations in a sensor. CONSTITUTION: A carrier is started to move from a reference position P103 and a reflecting plate 207 at a fixed distance L3 is detected with a light reflection type sensor 187 of the carrier. As a result, a difference between an actual moving distance L2 of the carrier measured with an encoder and the above fixed distance L3 stored previously is stored into a memory circuit as variations ΔL of the sensor and when the carrier is stopped at an assigned position, the stop position of the carrier is corrected by the above difference ΔL.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is, for example, a CD-ROM.
Optimal recording medium to be applied to a disc changer adapted to automatically exchange discs with a disc drive using a bare disc for recording and / or reproducing, such as optical discs such as MO and magneto-optical discs such as MO It's about a changer.

[0002]

2. Description of the Related Art Conventionally, most disc changers use a disc cartridge in which a disc is housed to automatically exchange the disc cartridge for a disc drive.

Conventionally, in this type of disc changer, a light-reflective sensor or the like attached to a carrier sequentially detects detected parts such as reflectors attached to disc drives having a plurality of upper and lower stages, and the like. The positions of the disc drives in the stages are sequentially detected, and the carrier is controlled to stop at the designated position.

At this time, in order to accurately stop the carrier at a designated position, both the mounting position of the sensor on the carrier and the mounting position of the detected portion such as a reflector on the disk drive must be set with high accuracy. I have to.

[0005]

However, conventionally, variations in the optical axis of the sensor itself have been almost ignored.
Therefore, no matter how accurately the sensor is attached to the reference position of the carrier, if the optical axis of the sensor itself varies, the stop position of the carrier also varies.

The present invention has been made in order to solve the above problems, and even if there are variations in the sensor,
It is an object of the present invention to provide a changer capable of always stopping a carrier at a designated position accurately.

[0007]

SUMMARY OF THE INVENTION To achieve the above object, a changer of the present invention comprises a plurality of shelves for holding recording media and one or a plurality of upper and lower shelves for recording and / or reproducing the recording media. Drive and a carrier that is moved along the shelf and the drive to automatically exchange the recording medium between the shelf and the drive. Sequentially detecting a plurality of detected parts arranged along,
A changer configured to stop the carrier at a designated position, a stopper for setting the carrier at a reference position, and a reference detection part set at a constant distance from the reference position along a movement path of the carrier. And, after the carrier is started to move from the reference position, the encoder that measures the actual movement distance of the carrier until the sensor detects the reference detection unit, and the carrier measured by the encoder. The difference between the actual movement distance and the previously stored constant distance between the reference position and the reference detected portion is stored as the variation of the sensor, and the stop position of the carrier is only the difference. And a memory circuit for correction.

[0008]

In the changer of the present invention configured as described above, recording media are held on a plurality of shelves, and carriers are moved along the shelves and the drives so that the recording media can be stored between the shelves and the drives. Between the two carriers, the sensor attached to the carrier detects multiple parts to be detected along the movement path of the carrier and stops the carrier at the specified position. In the changer, the stopper is used to set the carrier once to the reference position, then the carrier is started to move from the reference position, and the reference detection is set at a fixed distance from the reference position along the carrier movement path. Part is detected by the sensor attached to the carrier, and after the carrier starts moving from the reference position, the sensor detects the reference The actual movement distance of the carriers to the detection of the measuring encoder. Then, the difference between the actual movement distance of the carrier measured by the encoder and the predetermined distance between the reference position and the reference detection unit stored in advance is stored in the memory circuit as the sensor variation, and the carrier stop position is stored. Is corrected by the above difference.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a disc changer to which the present invention is applied will be described below with reference to the drawings. In this embodiment, an optical disk such as a CD-ROM or a magneto-optical disk such as an MO for recording and / or reproducing is used as a recording medium in a bare state. Therefore, the drive for recording and / or reproducing this disc is a disc drive.

[Outline of Disc Changer] First, an outline of the disc changer will be described with reference to FIGS.

First, the changer body 1 is formed in a vertical rectangular parallelepiped casing shape having a front surface 1a on the operator side, a back surface 1b on the opposite side, and left and right side surfaces 1c. The inside of the changer body 1 is divided into left and right by a partition wall 2 which is vertically arranged along the substantially central portion.

In order to record and / or reproduce the discs 3, the upper and lower disc shelves 4, which are shelves for horizontally mounting the bare discs 3 vertically in the changer body 1, are provided. A plurality of upper and lower stages of disk drives 6 in which the recording and / or reproducing unit 5 of
A disk in / out port 7 arranged in the same phase as the disk drives 6 and a carrier 9 having a hand 8 for disk transfer are housed.

At this time, a plurality of upper and lower horizontal disc shelves 4
And a plurality of upper and lower horizontal disk drives 6 and disk in / out ports 7 are arranged so as to oppose each other in the horizontal X direction, which is the horizontal direction. Are arranged.

A plurality of upper and lower disc shelves 4 and a moving path 10 of the carrier 9 are arranged on one side of the partition wall 2 inside the changer body 1, and a plurality of upper and lower disc drives 6 and one disc. The in / out port 7 is arranged inside the changer body 1 on the other side of the partition wall 2.

In this disc changer,
A 100-level disk shelf 4 is used so that 100 disks 3 can be stored. The 100-level disk shelf 4 is divided into blocks of 25 levels each, and is divided into four vertical rack bases 11. It is horizontally attached at regular intervals by a supporting structure. Further, eight disk drives 6 and one disk in / out port 7 arranged in the same phase at a predetermined height position between them are horizontally mounted on a total of nine stages of the drive mounting table 12. It is placed.

A carrier moving mechanism 13, which is a linear motion mechanism that supports the carrier 9 by a cantilever support structure and linearly moves in the Y direction, which is the vertical direction, is vertically arranged in the moving path 10. There is. A hand moving mechanism 14 that is a linear movement mechanism that linearly moves the hand 8 in the horizontal X direction, which is the horizontal direction, is attached to the carrier 9.

Then, a disk inlet / outlet 15 which is a horizontally long opening opened in the side surface of the eight disk drives 6 and one disk in / out port 7 on the carrier 9 side is formed in the partition wall 2 in a horizontally long opening. Are respectively connected to the upper and lower communication ports 16 in 9 stages. The tray inlet / outlet 17 of the disc in / out port 7 is opened in the front surface 1 a of the changer body 1.

On the front surface 1a of the changer main body 1 and on the front surface side of the 100-step disk shelf 4, an amplifier block 19 which is partitioned by a vertical partition 18 having a substantially U-shaped horizontal cross section is vertically installed. An interface block 20 of the disk drive 6 is arranged in the changer body 1 below the storage portion of the disk drive 6. Then, in the amplifier block 19,
The carrier moving mechanism 13 and the hand moving mechanism 14 are controlled based on signals from the respective sensors and encoders, and
A CPU that is a microcomputer for controlling the recording and / or reproducing unit 5 of each disk drive 6, a power supply circuit, and other necessary amplifier circuits are arranged.

[Explanation of Operation of Disc Changer] As shown in FIGS. 13 to 16, in this disc changer, when a disc is inserted, an operator inserts a bare disc into the disc in / out port 7 from the outside of the changer body 1. Add 3 pieces one by one. And
The loaded disc 3 is sequentially taken out from the disc in / out port 7 by the carrier 9 and the hand 8, is transported in the Y direction and the X direction, and is automatically automatically sequentially moved to the designated positions on the disc shelves 100 of 100 stages. To be mounted (mounted) on these disc shelves 4 horizontally.

When the disk 3 is automatically replaced, C
The carrier 9 and the hand 8 are set to Y based on the instruction from the PU.
The disk 3 is automatically taken out horizontally from the disk rack 4 designated by the hand 8 into the carrier 9 in the X direction by controlling the movement in the X direction and the X direction. Then, the ejected disc 3 is automatically conveyed in the Y direction to the disc drive 6 designated by the carrier 9. And
The disk 3 in the carrier 9 is directly and automatically loaded from the direction of the arrow X to the recording and / or reproducing unit 5 in the disk drive 6 designated by the hand 8 through the communication hole 16 and the disk inlet / outlet 15.

After loading the disc,
The hand 8 is automatically pulled back from the disc drive 6 into the carrier 9, and the recording and / or reproducing unit 5 in the disc drive 6 automatically performs the recording and / or reproducing operation of the disc 3.

Then, while recording and / or reproducing the disc 3 by a certain disc drive 6, the disc 3 from the other designated disc shelf 4 is operated by the same operation as described above.
The operation of taking out the card, carrying it, and automatically loading it into another designated disk drive 6 is repeated. The operation of taking out the disk 3 for which the recording and / or reproducing operation has been completed from the disk drive 6 and returning it to the designated original disk shelf 4 is the reverse operation of the above-mentioned operation.

[Description of Disc Mounting Method on Disc Shelf] Next, a mounting method of the disc 3 on each disc shelf 4 will be described with reference to FIGS.

First, each disc shelf 4 is formed of a substantially rectangular metal plate, and Z ₁ and X ₂ which are directions orthogonal to the X ₁ and X ₂ directions in which the hand 8 moves.
A pair of notches 22 on both sides of each disk shelf 4 in the direction
Are formed. The width A in the left-right direction of each disc shelf 4 is configured to be sufficiently smaller than the diameter B of the disc 3 by the pair of notches 22.

Then, a total of four disc mounting portions 23 formed of synthetic resin are provided on each disc shelf 4 as X ₁ , X ₂
It is attached to the left and right sides of both ends in the direction. The four disk mounting portions 23 in total are radially arranged so as to be substantially point-symmetric with respect to the center of each disk shelf 4.

At the outer periphery 3b of the disk 3, X ₁ ,
Both sides in the X ₂ direction are horizontally mounted on the pair of disk mounting portions 23 by their lower surfaces, and the disk 3
Are arranged so as to have some play at the center position O ₁ of each disk shelf 4. A circular hole 24 into which the center core 3a of the disc 3 is inserted with play is formed at the center position O ₁ of each disc shelf 4.

[Description of Disk Holding Method by Hand]
Next, a method of holding the disc 3 by the hand 8 will be described with reference to FIGS.

First, the hands 8 are arranged so as to face each other in the Z ₁ and Z ₂ directions and are horizontally moved in the X ₁ and X ₂ directions in synchronization with each other by a hand moving mechanism 14 described later. And a pair of hand main parts 26 that are formed symmetrically with each other, and a hand sub-part that is formed of synthetic resin and is attached inside the pair of hand main parts 26 at intervals in the X ₁ and X ₂ directions. Each pair is composed of four disk holding portions 27. In addition,
These four disk holding portions 27 in total are arranged so as to be substantially point-symmetric with respect to the center O ₂ between the pair of hand main portions 26.

At the outer periphery 3b of the disk 3, Z ₁ ,
Both sides in the Z ₂ direction are horizontally held from below by a pair of disc holding portions 27, and the disc 3 is held in the center O ₂ between the pair of slide plates 26 without play. .

[Explanation of Disk Transfer Operation by Hand] Next, referring to FIG. 1 to FIG. 12, the disk 8 between the disk shelf 4 and the carrier 9 and the carrier 9 and the disk drive 6 by the hand 8 on the carrier 9 will be described. The transfer operation of the disk 3 will be described.

First, as shown in FIGS. 1 and 8, on each disk shelf 4, both sides of the outer circumference 3b of the disk 3 in the X ₁ and X ₂ directions are horizontally mounted on a total of four disk mounting portions 23. It is placed.

Next, as shown in FIGS. 1 and 8, with the hand 8 accommodated at the origin P ₁ in the carrier 9, the carrier 9 is moved by the carrier moving mechanism 13 in the vertical direction Y ₁ , Y _2. The disk is moved in the direction and stopped in front of the designated disk shelf 4.

Next, as shown in FIGS. 2 and 9, the hand moving mechanism 14 horizontally moves the hand 8 in the X ₁ direction to the pull-out position P ₂ on the disk shelf 4 side, and the total number of hands 8 is 4. The outer circumference 3 of the disc 3 in which one disc holding portion 27 is horizontally placed on the designated disc shelf 4
It is horizontally inserted from the X ₁ direction into the lower positions on both sides of b in the Z ₁ Z ₂ direction (the lower positions of the pair of notches 22 of the disc shelf 4).

Next, as shown in FIG. 3, the carrier 9 is vertically lifted in the Y ₁ direction by a certain distance by the carrier moving mechanism 13 so that the hand 8 passes through the pair of notches 22 integrally with the carrier 9. The disc shelf 4 is vertically lifted in the Y ₁ direction from the lower position to the upper position. Then hand 8
By the total of four disk holding portions 27, the both sides in the Z ₁ and Z ₂ directions are held from below by the outer circumference 3b of the disk 3, and the disks 3 are moved from the total four disk mounting portions 23 of the disk shelf 4 in the Y ₁ direction. Can be lifted vertically.

Next, as shown in FIGS. 4 and 10, the hand 8 is moved by the hand moving mechanism 14 in the X ₂ direction to the origin P ₁ in the carrier 9, so that the disk 3 is moved from the disk shelf 4 to the carrier 9. It is horizontally withdrawn to the direction of arrow X ₁ to the inner.

Next, the carrier 9 is moved by the carrier moving mechanism 13.
Is moved vertically in the Y ₁ and Y ₂ directions by the disk drive 6 and the disk 3 is designated by the carrier 9.
Is conveyed vertically to the Y ₁ and Y ₂ directions to the front of
Is stopped in front of its designated disk drive 6.

Next, as shown in FIGS. 5 and 11, the hand 8 moves the disk drive 6 by the hand moving mechanism 14.
To the recording and / or reproducing position P ₃ in the inside of the disk drive 6 which is horizontally moved in the X ₂ direction and the disk 8 is designated by the hand 8 in the recording and / or reproducing unit 5 in the disk drive 6 and the disk table 30. It is pulled out horizontally to a pull-out position P ₃ on the side of the disk drive 6 which is a position directly above.

Next, as shown in FIG. 6, the carrier 9 is vertically lowered in the Y ₂ direction by a certain distance by the carrier moving mechanism 13 so that the hand 8 and the disk 3 are integrated with the carrier 9 in the Y ₂ direction. Is lowered to. Then, the disk 3 is vertically loaded onto the spindle 29 and the disk table 30 from above by the center core 3a, and the disk 3 is chucked horizontally on the spindle 29 and the disk table 30. Then, a total of four disc holding portions 27 of the hand 8 are separated downward from the disc 3.

Next, as shown in FIG. 27 and FIG. 12, the hand 8 is horizontally pulled back in the X ₁ direction to the origin P ₁ in the carrier 9 by the hand moving mechanism 14, and is moved from the disk shelf 4 to the disk drive 6. The series of disk transfer operations of is completed.

After loading the disc,
As shown in FIG. 7 and FIG. 12, in the recording and / or reproducing unit 5 in the disc drive 5, the disc 3 is rotationally driven integrally with the spindle 29 and the disc table 30 by the spindle motor 31, and the optical pickup and, if necessary, the disc 3 are driven. External magnetic field head used (none shown)
Thus, the recording and / or reproducing operation of the disc 3 is performed.

The operation of returning the disk 3 for which the recording and / or reproducing operation has ended to the original disk shelf 4 designated from the disk drive 6 is the reverse operation of the above operation.
Also, disk in / out port 7 and disk shelf 4
The transfer operation of the disk 3 between the disk and the disk is similarly performed.

As described above, the four disk holding portions 27 of the hand 8 hold both sides of the outer circumference of the disk 3 from below, and the space between the disk shelf 4 and the carrier 9 and between the carrier 9 and the disk drive 6 According to the disc changer that transfers the disc 3 to and from the disc in / out port 7, the recording surface of the disc 3 is hardly soiled or damaged.

Further, the disk mounting portion 23 of the disk shelf 4
And the four disc holders 27 of the hand 8
The outer periphery 3b of the disc 3 is alternately held on both sides in the X ₁ and X ₂ directions and on both sides in the Z ₁ and Z ₂ directions which are perpendicular to each other, and the disc 3 is held between the disc shelf 4 and the hand 8. Since the disc 3 is delivered, the disc 3 can be smoothly delivered and received.

Further, the hand 8 has a direction (Z ₁ , Z ₂ ) orthogonal to the moving direction (X ₁ , X ₂ direction) of the hand 8.
Hold the outer circumference 3b of the disk 3 from both sides ( ₂ directions),
Since the disks 3 in the X ₁ and X ₂ directions are transferred between the carrier 9 and the disk shelves 4 and the disk drives 6, etc.
Even if the disc 3 is not pulled out deeply in the X ₁ direction and the X ₂ direction, the disc 3 is transferred between the origin P ₁ on the carrier 9 and the pull-out positions P ₂ , P _{3 in the} disc shelf 4 and the disc drive 6, etc. Can be done easily. Therefore, the withdrawal amounts S ₁ and S ₂ of the hand 8 from the carrier 9 to the disk shelf 4 side and the disk drive 6 side are sufficiently small so that the carrier 9 and the disk shelf 4 and the disk drive 6 etc. The transfer operation of the disk 3 can be performed stably and quickly.

Further, the hand 8 moves in the direction (Z ₁ , Z ₂ ) orthogonal to the moving direction (X ₁ , X ₂ direction) of the hand 8.
Hold the outer circumference 3b of the disk 3 from both sides ( ₂ directions),
Since the disks 3 in the X ₁ and X ₂ directions are transferred between the carrier 9 and the disk shelves 4, the disk drives 6 and the like, the disks 3 taken out from the disk shelves 4 in the X ₂ direction on one side of the carrier 9 When handing over the disk from the opposite side of the carrier 9 to the disk drive 6 or the like in the X ₂ direction, it is not necessary to hold the disk 3 on the carrier 9 one by one, and the disk 3 taken out from the disk shelf 4 in the X ₂ direction.
X ₂ from carrier 9 to disk drive 6 etc.
Can be handed over quickly in the direction. Therefore, the transfer operation time of the disk 3 which relays the carrier 9 between the disk shelf 4 and the disk drive 6 can be greatly reduced.

[Explanation of Sealed Area in Changer Body]
Next, referring to FIGS. 17 and 18, the changer body 1
The sealed region and the non-sealed region formed inside will be described.

In this disc changer, since the bare disc 3 is used, dust and the like are easily attached to the disc 3. Therefore, sufficient dustproof measures for the disk 3 are desired.

Therefore, in this disc changer,
Inside the changer body 1, the shaded area in FIGS. 17 and 18 is formed into a completely sealed area 33, and inside the changer body 1, the area other than the shaded area is the non-sealed area 34. Is formed.

That is, the inside of the changer body 1 is separated by the partition wall 2.
And 18 divide into a closed area 33 and a non-closed area 34. Then, 100 stages of disk shelves 4, carriers 9 and carrier moving mechanism 13 are arranged in the sealed area 33, and 8 stages of disk drives 6 and one disk in / out port 7 are arranged in the non-sealed area 34. Are arranged. Further, in the non-sealed area 34, the amplifier block 19
The main heat generating sources such as the interface block 20 are arranged.

However, as will be described later, the inside of the recording and / or reproducing unit 5 and the inside of the disc in / out port 7 which are respectively disposed inside the eight-stage disc drive 6 are all constructed in a hermetically sealed structure. The disk inlet / outlet port 15 is airtightly connected to each communication port 16 of the partition wall 2 through a dustproof member. Further, the tray inlet / outlet 15 of the disc in / out port 7 is also configured to be airtightly closed by a similar dustproof member, so that intrusion of dust from the outside into the sealed area 33 is surely prevented.

Therefore, in this disc changer,
All the disks 3 inserted into the changer body 1 from the disk in / out port 7 are sealed areas 33.
The disk 3 will be housed inside, and the automatic exchange operation and the recording and / or reproducing operation of the disk 3 described above will be performed in the sealed area 33.

For this reason, dust is not attached to the recording surface of the disc 3, and it is possible to prevent inconveniences such as output reduction due to spacing loss.
It is possible to configure a high-quality disc changer capable of obtaining high recording and / or reproducing characteristics.

At this time, if main heat sources such as the amplifier block 19 and the interface block 20 are arranged in the sealed area 33 inside the changer body 1, heat will be trapped in the sealed area 33. .

Therefore, this main heat generation source is arranged in the unsealed region 34 inside the changer body 1 to prevent heat from being trapped in the sealed region 33, and in the unsealed region 34. Even if the main heat generation source is cooled by air using a fan, dust diffusion in the sealed area 33 does not occur at all, so both dust prevention of the disk 3 and air cooling of the main heat generation source are effective. You can do it.

[Description of First Modification of Arrangement Method of Disk Shelf and Disk Drive] Next, according to this disk changer, as shown in FIGS. 19 and 20, a part of the disk drive 6 is deleted. Then, the upper and lower (or lower) upper and lower disc shelves 4 are arranged such that the upper and lower disc shelves 4 face each other and the number of discs 3 mounted is 100. It is possible to make it possible to increase even more.

[Description of Second Modification of Arrangement Method of Disk Shelf and Disk Drive]

Next, according to this disc changer, as shown in FIGS. 21 and 22, a plurality of upper and lower stages of disc shelves 4, a plurality of upper and lower stages of disc drives 6, and one disc in / out port. 7 and 7 can be arranged vertically on one side of the movement path 10 of the carrier 9 to further reduce the size of the disc changer.

[Explanation of Carrier Transfer Mechanism] Next, FIG.
24 and FIG. 24, the carrier 9 is moved vertically to the moving path 10
The carrier moving mechanism 13 that moves in the Y direction along the direction will be described.

In the carrier moving mechanism 13, a pair of vertical and parallel guide rails 36 and 37 are integrally connected between upper and lower ends by a pair of upper and lower brackets 38 and 39, and these are vertically installed in the changer body 1. are doing. Then, one timing belt 44 is wound between a pair of upper and lower timing pulleys 42 and 43 rotatably attached to the pair of upper and lower brackets 38 and 39 via pulley shafts 40 and 41, respectively, and a pair of guide rails 36, A pair of sliders 45 and 46 slidably attached in the Y ₁ and Y ₂ directions along 37 are connected to two positions on both sides of one timing belt 44.

The carrier 9 is fixed to one slider 45 by a cantilever support structure, and the counter 47 is fixed to the other slider 46. Then, with the motor 49 attached to the side surface of the upper bracket 38, the upper timing pulley 40 is decelerated clockwise and counterclockwise in FIG. By doing so, one timing belt 44 is rotationally driven in the Y ₁ and Y ₂ directions. The pair of sliders 45 and 46 are reversibly slid in the Y ₁ direction and the Y ₂ direction along the pair of guide rails 36 and 37 by one timing belt 44, and the carrier 9 is counterweighted. It is configured such that it is moved along the _one guide rail 36 at a high speed in a linear motion in the Y ₁ and Y ₂ directions while being balanced.

[Explanation of Hand Movement Mechanism] Next, referring to FIG.
The hand moving mechanism 14 for moving the hand 8 in the X direction above the carrier 9 will be described with reference to FIG.

The hand moving mechanism 14 has a pair of slide units 52 which are linear motion mechanisms for sliding the pair of hand main parts 26 in the X ₁ and X ₂ directions in synchronization with each other. Are mounted on the carrier 9 at both ends in the Z ₁ and Z ₂ directions at a distance C larger than the diameter B of the disk 3 in parallel with the X ₁ and X ₂ directions and horizontally.

Then, the pair of slide units 5
2 has a symmetrical shape, and the pair of slide units 52 includes a slide base 53 fixed horizontally on the carrier 9 and X ₁ on the slide base 53.
Slide rail 54 that slides horizontally in the X ₂ direction
And a slide guide 55 that slides horizontally in the X ₁ and X ₂ directions on the slide rail 54.
Then, the hand main part 2 is placed on these slide guides 55.
6 is symmetrical and fixed horizontally.

Further, the pair of slide units 52
Is a horizontal slide plate 56 that is integrated with the slide rail 54.
And a pair of vertical timing pulleys 57 and 58 rotatably attached to the upper portions of both ends of the slide plate 56 in the X ₁ and X ₂ directions, and the pair of timing pulleys 5
Timing belt 5 wrapped horizontally between 7 and 58
9 and 9. Then, a part of the two locations, the outer side and the inner side, of the timing belt 59 are a pair of stoppers 60,
It is fixed to the carrier 9 and the hand main portion 26 by 61, respectively.

Further, the pair of slide units 52
Is vertically attached to the bottom of the slide plate 56, and
_It has a rack 62 formed in parallel with the ₁ and X ₂ directions.

The hand moving mechanism 14 is mounted on the carrier 9, and the pair of racks 62 of the pair of slide units 52 are synchronized with each other to generate X ₁ , X _2.
It has a drive unit 63 that drives in the direction. The drive unit 63 includes a single drive shaft 66 that is at a right angle to a pair of racks 62 that are decelerated by a motor 64 via a belt drive mechanism 65 that uses a timing belt and are driven to rotate forward and backward. It has a pair of pinions 66 that are fixed to both ends of the drive shaft 66 and that drive the pair of racks 62 in the X ₁ and X ₂ directions.

According to the hand moving mechanism 14, when the drive shaft 66 is decelerated in the counterclockwise direction and the clockwise direction in FIG. The pinion 67 is driven to rotate forward and backward integrally with the drive shaft 66, and drives the pair of racks 62 of the pair of slide units 52 in synchronization with each other in the X ₁ direction and the X ₂ direction.

Then, the pair of slide rails 54 and the pair of slide rails 54 are integrated with each other on the pair of slide bases 53.
A pair of timing belts 59, which are slid in the ₁ direction and the X ₂ direction in synchronization with each other, and are partially fixed on the carrier 9 by the stoppers 60, together with the pair of slide rails 54, in the X ₁ direction and the X direction. _The pair of timing belts 59 are slid in _two directions in synchronization with each other.
Are rotationally driven in opposite directions between the pair of timing pulleys 57 and 58, respectively.

Then, the pair of timing belts 5
The pair of hand main parts 26 fixed by the stoppers 61 inside 9 are slid by the pair of slide guides 55 on the pair of slide rails 54 in the X ₁ direction and the Y ₁ direction in synchronization with each other.

At this time, the pair of hand main parts 26
Is moved in the same direction as the pair of slide rails 54 and at a speed twice the moving speed of the pair of slide rails 54, and when the moving amount of the pair of slide rails 54 is S, The amount of movement of the hand main part 26 is 2S
Becomes

Therefore, according to the hand moving mechanism 14, the hand 8 having the pair of hand main portions 26 can be moved horizontally relative to the carrier 9 at a high speed in the X ₁ direction and the X ₂ direction by a linear motion. it can. Since the pair of hand main parts 26 can be slid with the double movement amount of the pair of slide rails 54, the X of the hand 8 is
It is possible to freely set a large movement stroke in _one direction and the X ₂ direction.

Therefore, the hand 8 enables high-speed transfer of the disk 3 in the X ₁ and X ₂ directions between the carrier 9 and the disk shelf 4, the disk drive 6 and the disk in / out port 7. The present invention is also applicable to devices having different distances in the X ₁ and X ₂ directions with respect to the movement path 10 of the carrier 9.

Moreover, the hand moving mechanism 14 is used for the hand 8
Despite its large movement stroke, it has a simple structure and can be made compact and lightweight. Therefore, the weight of the entire carrier 9 can be significantly reduced, and the carrier moving mechanism 13 can move the carrier 9 at high speed in the Y ₁ and Y ₂ directions.

[Detailed Description of Disk Placement Section on Disk Shelf] Next, referring to FIG. 25 and FIGS.
A detailed structure of a total of four disk mounting portions 23 mounted on the disk shelf 4 will be described.

First, a total of 4 molded from synthetic resin.
The one disk mounting portion 23 is a disk mounting taper surface 70 on which the outer peripheral edge 3c of the lower surface 3b of the disk 3 is mounted horizontally from above, and is vertically raised upward from the outer circumference of the taper surface 70. Vertical wall 71 and, if necessary,
The vertical wall 71 is integrally formed with a taper surface 72 for attracting a disk formed on the outer periphery of the upper end of the vertical wall 71.

Then, a convex portion 73, a locking claw 74, a positioning pin (not shown) and the like are integrally formed on the lower surface of these four disk mounting portions 23, and a total of these four disk mounting portions are provided. 23 are attached from above to the four locations on the disc shelf 4 which have already been described with reference to FIGS.

At this time, the convex portion 73 of each disk mounting portion 23
Is fitted in the fitting hole 76 of the disk shelf 4, the locking claw 74 is locked in the locking hole 77 of the disk shelf 4, and the positioning pin is fitted in the positioning hole of the disk shelf 4 (neither is shown). As a result, the respective disk mounting portions 23 can be fitted onto the disk rack 4 by one-touch fitting from above.

The disk mounting taper surfaces 70 of the four disk mounting portions 23 in total are formed so as to be gradually inclined downward toward the center position P ₁₀ . Incidentally, the outer peripheral taper surface 72 for inviting the disk, which is formed as necessary, is formed as a taper surface which is gradually inclined downward toward the center position P ₁₀ at a steep angle.

The minimum inner diameter D inside the vertical walls 71 of these four disk mounting portions 23 is configured to be sufficiently larger than the diameter B of the disk 3, and between these minimum inner diameters D and B. Has a 2E play.

The disk 3 placed horizontally on the disk shelf 4 from above by the hand 8 in the Y ₂ direction is
The discs are inserted into the vertical walls 71 of the four disc mounting portions 23 in total and horizontally mounted on the taper surface 70 for disc mounting. A slight gap 79 is formed between the lower surface 3b of the disk 3 and the upper surface 4a of the disk shelf 4.

At this time, since the outer peripheral edge 3c of the lower surface 3b of the disk 3 is placed on the four tapered surfaces 70,
The recording surface 3d formed on the lower surface 3b of the disk 3 is never damaged.

The four tapered surfaces 70 automatically center the disks 3 at the center positions O ₁ of the four disk mounting portions 23 due to the weight of the disks 3.

Moreover, at this time, the minimum inner diameter D of the vertical walls 71 and the diameter B of the disks 3 of the four disk mounting portions 23 in total.
Since there is a play of 2E between and, when the disc 3 is horizontally inserted from the Y ₂ direction into the vertical walls 71 of the four disc mounting portions 23 by the hand 8, there is a margin for the play of 2E. Since it can be held and inserted, a total of four disc mounting portions 2 of the disc 3 can be provided without accidentally colliding a part of the outer periphery of the disc 3 with the vertical wall 71.
It can be placed on the surface 3 smoothly and safely.

Incidentally, the taper surfaces 72 for attracting the disks on the outer circumferences of the four mounting portions 23 in total are not particularly necessary.
By removing the tapered surface 72, the vertical distance between the disk shelves 4 can be reduced.

[Detailed Description of Disk Holding Unit of Hand] Next, referring to FIGS. 25 and 28 to 30 (B), a total of 4 units mounted inside the hand main unit 26 of the hand 8 will be described.
The detailed structure of one disc holding portion 27 will be described.

First, a total of 4 molded from synthetic resin.
The one disk holding portion 27 has a taper surface 81 for holding the outer peripheral edge 3c of the lower surface 3b of the disk 3 horizontally from below, and a vertical wall 82 that rises upward from the outer circumference of the taper surface 81. The vertical wall 82 is integrally formed with a taper surface 83 for attracting a disk formed on the outer periphery of the upper end of the vertical wall 82.

The four disk holding portions 27 in total are fixed to the inside of the hand main portion 26, which is formed of a horizontal metal plate, by the flange 84 integrally formed on the outer circumference of the disk holding portions 27 by a set screw 85. It is firmly fixed.

The disk holding taper surfaces 81 of the four disk holding portions 23 in total have a central position O ₂
Is formed to be a taper surface (a taper surface having substantially the same angle as the disk mounting taper surface 70) that is gradually inclined downwardly toward. Further, the taper surface 83 for attracting the disk is formed as a taper surface which is gradually inclined downward at a steep angle toward the center position O ₂ .

The minimum inner diameter F inside the vertical walls 82 of these four disk holding portions 27 is substantially equal to the diameter B of the disk 3, and there is a play between these minimum inner diameters F and B. Are almost not formed. In addition, the width 2G in the radial direction of the four taper faces 83 for attracting the discs on the outer circumference of the four disc holding portions 27 in total is:
It is configured to have a play amount of 2E with respect to the diameter B of the disc 3 of the four disc mounting portions 23 in total.

When the hand 8 holds the disc 3 on the disc shelf 4 horizontally in the Y ₁ direction from below, the disc 3 has four disc holding portions 2 in total.
7 is called by the disk-inclining tapered surface 83, is inserted horizontally inside the vertical wall 82, and is placed on the disk-holding tapered surface 81.

At this time, since the outer peripheral edge 3c of the lower surface 3b of the disk 3 is placed on the four tapered surfaces 81,
The recording surface 3d formed on the lower surface 3b of the disk 3 is never damaged.

The four vertical walls 82 allow the disks 3 to be positioned at the center positions O of the four disk holding portions 26 in total.
Centered at ₂ automatically.

Therefore, the total of four disc holding portions 27 of the hand 8 center the disc 3 at the central position O ₂ and stably hold the disc 3 so that the disc 3 is not displaced in a horizontal plane and convey it. can do.

By the way, in the four disc mounting portions 23 on the disc shelf 4, the disc 3 can be mounted horizontally with a margin so as to have a play of 2E with respect to the diameter B thereof. A total of four disk holding portions 27 of the hand 8 hold the disk 3 with respect to its diameter B so that the disk 3 is hardly displaced in the horizontal plane.

Therefore, the mounting positions of the discs 3 on the four disc mounting portions 23 of the disc shelf 4 are determined by the hand 8
Therefore, the discs 3 are regulated by a total of four disc holders 26, and the discs 3 are placed on the four disc holders 23 of the disc shelf 4 in a horizontal plane with respect to the four disc holders 26 of the hand 8. Always on the center (as shown in FIGS. 2 and 9, the total center position O ₂ of the four disk holding portions 26 of the hand 8 when the hand 8 comes to the drawing position P ₂ of the disk shelf 4). It can be placed stably.

As a result, as described in FIGS. 1 to 12,
When the disk 8 is transferred to and from the disk shelf 4 by the hand 8, the disk mounting portion 2 on the disk shelf 4
3 and the disc holding portion 26 on the hand 8 is prevented from being displaced in the horizontal plane, and it is possible to prevent the disc 3, the disc mounting portion 23, and the disc holding portion 26 from being unevenly worn at a certain position. it can.

That is, as shown in FIG. 30A, on the disc shelf 4, the disc 3 is moved within the play range of 2E.
May shift in the horizontal direction with respect to the central positions O _{1 of the} four disk mounting portions 23 in total. However, as shown in FIG. 30B, since the taper surfaces 83 of the four disk holding portions 27 of the hand 8 have a width of 2G which is larger than 2E, the disks 3 are horizontal on the disk shelf 4. Even if they are displaced in the direction, when the hand 8 receives the disc 3 on the disc shelf 4 from the Y ₁ direction, the tapered surface 83 can surely attract the disc 3 inside the vertical wall 82. Therefore, the hand 8 can receive the disc 3 on the disc shelf 4.

Next, as shown in FIG. 30A, when the hand 8 returns the discs 3 to the disc mounting portions 23 on the disc shelves 4 from the Y ₂ direction, a total of four hands 8 are placed. Even if the center position O ₂ of the disc holding portion 27 is displaced horizontally with respect to the center position O ₁ of the disc mounting portion 23 within the range of the play of 2E, the disc 3 is moved to the vertical wall 71 of the disc mounting portion 23. It can be securely placed inside.

At this time, a total of 4 of the hands 8 with respect to the central position O ₁ of the four disk mounting portions 23 of the disk shelf 4 is obtained.
The general repeatability regarding the deviation of the center position O ₂ of the two disk holding portions 27 is much higher than the absolute position accuracy. Therefore, when the center position O ₂ deviates from the center position O ₁ during the first disc returning operation on the disc shelf 4, the hand 8 also deviates with the same precision after the second time. Therefore, when the hand 8 receives the disc 3 on the disc shelf 4 from the Y ₂ direction after the second time,
A total of four disk holding portions 27 of the hand 8 are tapered surfaces 8
The disk 8 can be reliably brought into the inside of the vertical wall 82 without using 3.

Further, since the total of four disc holding portions 26 of the hand 8 can hold the disc 3 with almost no displacement in the horizontal plane, as shown in FIGS. 5, 6 and 11. Then, the disk 8 is moved by the hand 8 with respect to the spindle 29 and the disk table 30 in the recording and / or reproducing unit 5 in the disk drive 6 by Y ₂
The mounting operation from the direction can always be performed accurately, misloading can be prevented, and reliability is high.

As shown in FIG. 25, of the four vertical walls 82 of the four disk holding portions 26 of the hand 8, the pair of vertical walls 82 arranged on the X ₁ direction side is in the X ₁ direction. The edge 82a on the side and the edge 82b on the X ₂ direction side of the pair of vertical walls 82 arranged on the X ₂ direction side regulate the minimum inner diameter F described above.

As a result, a substantially triangular gap 86 for attracting the disc can be formed between the opposite edges 82c and 82d of each pair of the vertical walls 82 and the outer periphery of the disc 3. The disk 3 can be smoothly drawn into the inside of the four vertical walls 82 by the synergistic action of the drawing tapered surface 81 and these gaps 86.

[Description of First Modified Example of Disc Mounting Section on Disc Shelf] Next, according to this disc changer, as shown in FIG. It may be divided into three along the outer circumference.

[Explanation of Second Modification of Disc Mounting Section on Disc Shelf] Next, according to this disc changer, as shown in FIG. It may be divided into two along the outer circumference.

[Detailed Description of Sealing Structure in Disc Drive] Next, the sealing structure of the recording and / or reproducing unit 5 provided in the disc drive 6 will be described with reference to FIGS. 33 to 35.

First, the disk drive 6 has a main body exterior 8
8 and a dustproof casing 89 having a closed structure disposed inside thereof, and the recording and / or reproducing unit 5 is housed in the dustproof casing 89.

At this time, the dustproof casing 89 is horizontally attached in an airtight manner to the upper portion of the mechanical chassis 90, and the vibration damping damper 91 is formed of four rubbers at the lower four corners of the mechanical chassis 90. It is elastically supported on the bottom chassis 92 of the main body exterior 88 via. And the dustproof casing 8
9, a spindle 29, a disk table 30, and a spindle motor 31, which constitute the recording and / or reproducing unit 5 on the mechanical chassis 90, an optical pickup, and an external magnetic field head used as necessary (neither is shown). Is provided.

The four dampers 91 are formed, for example, in a shape in which a substantially hemispherical damper main portion 91a and a lower flange 91b are integrally molded by an elastic member such as rubber. Then, the lower flange 91b is horizontally attached to the bottom chassis 92 by a pair of stoppers 93 such as snap pins, and the damper contact portions 90a formed at the four lower corners of the mechanical chassis 90 are attached to the damper main portion 91a.
It is placed on top. Then, the set screw 94 vertically inserted from above into the damper contact portion 90a is attached to the damper main portion 91a.
It is fixed by screwing it into a nut 95 which is integrally insert-molded at the top of the.

Therefore, even if the main body exterior 88 vibrates in the horizontal direction and the vertical direction due to external vibration applied to the main body exterior 88, the external vibration is absorbed by the four dampers 91, so that the entire dustproof casing 89. Anti-vibration function can be obtained. The damper 91 may have various shapes.

On the other hand, in order to maintain the airtightness inside the dustproof casing 89, the disc inlet / outlet 15 of each disc drive 6 is opened at the side face 89a of the dustproof casing 89 on the side of the partition 2 and this disc inlet / outlet 15 of the partition 2 is provided. The communication holes 16 facing each other are airtightly connected by a dustproof member 96.

That is, the disk inlet / outlet 15 formed on the side surface 89 of the dustproof casing 89 communicates with each communication hole 16 of the partition wall 2 through the opening 97 formed in the side surface of the main body exterior 88 on the partition wall 2 side.

Inside the opening 97, the outer periphery between the disk inlet / outlet port 15 and the communication port 16 is airtightly connected by a square and ring-shaped dustproof member 96. The dustproof member 96 is made of a member having flexibility and elasticity such as neoprene sponge, moltoprene sponge, rubber, and filter paper.

Therefore, according to the disk drive 6, the four dampers 9 are housed inside the dustproof casing 89.
Recording and / or reproducing section 5 elastically supported by 1.
While ensuring the vibration-proof property of the dust-proof housing 89, the dust-proof housing 89 is formed by the dust-proof member 96 having flexibility and elasticity in which the outer circumferences between the disk inlet / outlet 14 of the partition wall 2 and the communication hole 16 are airtightly connected. Recording and / or reproducing unit 5 which is inside
Can be airtightly connected to the sealed area 33 inside the changer body 1 shown in FIGS. 17 and 18, and the airtightness and dustproofness of the recording and / or reproducing unit 5 can be secured. .

[Explanation of Device for Mounting Disc Shelf on Shelf Base] Next, a device for mounting the disc shelf 4 on the shelf base 11 will be described with reference to FIGS. 36 to 42.

First, as described with reference to FIG. 14, the vertical shelf base 11 is constructed such that 25 stages of disk shelves 4 are horizontally attached at regular intervals by a cantilever support structure. The shelf base 11 has a central plate portion 11a.
And a pair of left and right side plate parts 11b that are perpendicular to the central plate part 11a and are parallel to each other, the horizontal cross section is formed in a substantially U shape, and is configured to have a constant length in the vertical direction.

Then, the base portion 4b of each disc shelf 4 opposite to the above-mentioned carrier 9 side is horizontally inserted between the pair of left and right side plate portions 11b of the substantially U-shaped shelf base 11 in the direction of arrow X _1. It is configured to be attached with one touch.

At this time, first, the central plate portion 1 of the shelf base 11
And the central portion of the 1a, along the end surface 11c of the X ₂ direction side is a carrier 9 side of the left and right side plate portions 11b, horizontal form three reference grooves 100, 101, 102 within the same horizontal plane, and the vertical It is formed in 25 steps at regular intervals. The pair of left and right reference grooves 101, 102 are open to the end surfaces 11c of the left and right side plate portions 11b.

Then, X ₁ of the base 4b of each disc shelf 4
And the central portion of the direction of the end face 4d, the left and right end faces 4e, three spigots 103 is a projection to be inserted horizontally from the direction X ₁ in the above three criteria grooves 100, 101,
104 and 105 are integrally formed in a bilaterally symmetrical shape. In addition, a pair of small protrusions 104a and 104b to be inserted from the X ₁ direction outside the left and right side plate portions 11b of the shelf base 11 are formed outside the pair of left and right insertion portions 104 and 105.

The left and right side plate portions 11 of the shelf base 11
Inside the b, a pair of left and right insertion guides 106 made of synthetic resin are formed at positions deviated to the side of the central plate portion 11a in the same horizontal plane as the three reference grooves 100, 101, 102, and in the vertical direction. It is attached in 25 steps.

As shown in FIGS. 41 and 40, the insertion guides 106 have a pair of locking claws 107 integrally formed on the outer sides of both end portions of the insertion guides 106.
By inserting into the pair of locking holes 108 formed in b from the Z ₁ and Z ₂ directions, it can be attached to the inside of the left and right side plate portions 11b with one touch. A pair of left and right horizontal insertion guide grooves 108 are formed on the inner facing surfaces of the pair of left and right insertion guides 106.

A pair of left and right leaf springs 110, which are locking members integrally formed with the pair of left and right insertion guides 106, and a pair of left and right engagements formed on the left and right end surfaces 4e of the base 4b of each disc shelf 4. A pair of left and right lock mechanisms 112 are configured by the combined cutout 111.
The pair of left and right leaf springs 110 are substantially L-shaped and symmetrically formed, and the free end portions 110a of the pair of left and right leaf springs 110 are formed through the pair of left and right groove holes 113 formed in the left and right side plate portions 11b. It projects in the Z ₁ and Z ₂ directions toward the outside of the portion 11b. A pair of left and right leaf springs 114, which are pressing members, are integrally formed at the ends of the pair of left and right insertion guides 106 in the X ₁ direction. These leaf springs 1
The reference numeral 13 is formed in a substantially small size and is in contact with the inside of the central plate portion 11a of the shelf base 11.

According to the device for mounting the disk shelves 4 on the shelf base 11 configured as described above, as shown in FIGS. 36 to 40, the base portions 4b of the respective disk shelves 4 are attached to the shelf base 11.
By inserting the left and right side plate portions 11b horizontally from the X ₁ direction and inserting the three insertion portions 103, 104 and 105 into the three reference grooves 100, 101 and 102 horizontally from the X ₁ direction, 4 can be attached to the shelf base 11 with one touch.

That is, at this time, as shown in FIGS. 41 and 42, the left and right end surfaces 4e of the base 4b of the disc shelf 4 are inserted into the insertion guide grooves 109 of the pair of left and right insertion guides 106 from the X ₁ direction. , The pair of left and right leaf springs 110 of the lock mechanism 112 are once released in the Z ₁ direction against the elasticity as shown by the alternate long and short dash line in FIG.

Then, the three insertion portions 103, 104,
105 is X ₁ in the three reference grooves 100, 101, 102.
41, the pair of left and right leaf springs 110 elastically return in the Z ₂ direction and are automatically inserted into the pair of left and right engaging notches 111 of the disc shelf 4, as shown by the solid line in FIG. , The disk shelf 4 is locked to the shelf base 11, and the disk shelf 4 is prevented from dropping from the shelf base 11 in the X ₂ direction. At this time, as shown in FIG. 38, a pair of left and right small protrusions 104a and 105a are simultaneously inserted into the outside of the left and right side plate portions 11b of the shelf base 11 from the X ₁ direction, so that the left and right side plate portions 11b are formed as shown in FIG. Lock it so that it will not be pushed outward in the Z ₁ and Z ₂ directions.

At this time, the end surface 4d of the base portion 4b of the disc shelf 4 presses the pair of left and right leaf springs 114 against the central plate portion 11a of the shelf base 11 in the X ₁ direction against elasticity.
Then, due to the pressing reaction force of the pair of left and right leaf springs 114, the disk shelf 4 is in the direction opposite to the inserting direction X.
_By pressing in _two directions, the play between the pair of left and right leaf springs 110 and the engaging notches 111 is removed.

Therefore, the disc shelf 4 has three reference grooves 10
By 0, 101, 102, it is accurately positioned in the mounting reference position in the Y ₁ , Y ₂ directions, Z ₁ , Z ₂ directions and X ₁ , X ₂ directions which are the top, bottom, left and right and front and back, and there is no rattling. It can be attached stably and firmly in a state.

When removing each disc shelf 4 from the shelf base 11, the free ends 110a of the pair of left and right leaf springs 110 are connected to the left and right side plate portions of the shelf base 11 as shown by the alternate long and short dash lines in FIG. Toward the outside of 11b, Z ₁ , Z _{2 in} FIG.
When the pair of left and right leaf springs 110 are pulled outward from the pair of left and right engaging notches 111 of the disc shelf 4, the pair of left and right leaf springs 114 press the disc shelf 4 in the X ₂ direction. , The disk shelf 4 is automatically pushed out from the shelf base 11 in the X ₂ direction. Therefore, the disk shelf 4 can be easily removed from the shelf base 11 with one touch.

Incidentally, FIG. 14, FIG. 13, FIG. 19, FIG.
As shown in FIGS. 21 and 22, the vertical shelf base 11 is a vertical shelf base mounting frame 1 in the changer body 1.
It is attached to 15 by screwing or the like.

[Description of Disc Lifting Prevention Structure on Carrier] Next, referring to FIG. 43 and FIG. 44, a description will be given of a lift-up preventing structure for the disc 3 held horizontally in the carrier 9 by the hand 8. To do.

On the carrier 9, for example, two horizontal and parallel ceiling frames 117 are provided above the hands 8 by Z ₁ , Z _2.
The ceiling frames 117 are arranged so as to horizontally traverse each other in the horizontal direction, and both ends in the length direction of these ceiling frames 117 straddle both sides of the pair of left and right slide units 52 of the hand moving mechanism 14 described above. It is fixed by a set screw 118.

A total of four disc retainers 119 are attached to the lower portion of these ceiling frames 117 by adhesion or a set screw 1.
It is attached horizontally by screwing with 20 or the like.
It is preferable that these disc retainers 119 are formed of an elastic member such as rubber and are arranged at a constant height H with respect to the upper surface 3f of the disc 3 which is horizontally held by the hand 8. The presser foot 119 may be made of an elastic brush or the like so as to be constantly in contact with the upper surface 3f of the disk 3.

Therefore, Y of the disk 3 by the carrier 9
At the time of an emergency stop during high-speed conveyance in _one direction, when the acceleration exceeds the gravity of the disc 3, or when abnormal vibration occurs during the conveyance of the disc 3 by the carrier 9 in the Y ₁ and Y ₂ directions, When the disks 3 try to float in the Y ₁ direction from a total of four disk holding portions 27 of the hand 8,
The disk 3 is relatively pressed by the four disk pressers 119 in the Y ₂ direction. This allows
The disk 3 is the hand 8 and a total of four disk holding portions 27.
Therefore, it is possible to prevent the surface from rising significantly in the Y ₁ direction and accidentally falling off.

[Description of Drive Mounting Mechanism on Drive Mounting Table] Next, a drive mounting mechanism for mounting the disk drive 6 on the drive mounting table 12 shown in FIG. 14 will be described with reference to FIGS. To do.

First, FIG. 45 shows an almost L-shaped mounting method of this drive mounting mechanism. That is, from the front surface 1a side of the changer body 1, the disk drive 6 is inserted on the drive mounting table 12 in the Z ₁ direction toward the rear in the front-rear direction and mounted horizontally, and then the disk drive 6 is driven. On the mounting table 12, the disk drive 6 is slid at a right angle in the X ₁ direction toward the partition wall 2 which is one side in the left-right direction, and the disk drive 6 is positioned by the positioning pin provided on the partition wall 2. .

Next, as shown in FIGS. 46 to 50, the disk drive 6 is provided on the drive mounting table 12, and the disk drive 6 is moved in the forward and backward directions Z ₁ , Z ₂ and in the left and right directions X ₁ , X.
_The drive slide mechanism 122 that slides in two biaxial directions will be described.

The drive slide mechanism 122 includes four ball casters 123 attached to almost four corners of the drive mounting table 12 and Z ₂ on the drive mounting table 12.
A pair of fixed guides 125 made of synthetic resin, which are attached to the end portion 12a on the direction side with a space, and the lower surface 6a of the disk drive 6 at the same intervals as the pair of fixed guides 125.
A pair of guide rails 125, which are bent sheet metals horizontally and parallelly attached to each other, having a substantially U-shaped vertical cross section, and guides arranged substantially in the center of the end 12b on the drive mounting table 12 on the X ₂ direction side. The roller 126 and the drive mounting table 12
A guide roller 127 arranged substantially in the center of the upper end 12c in the X ₁ direction and a pair of guide rollers 126, 127 attached to the bottom of the drive mounting table 12 centering on the fulcrum shafts 128, 129 are provided with holes 141. , 142 to move in the X ₁ and X ₂ directions through the pair of levers 130 and 131.
And a pair of tension coil springs 1 which are biasing means for biasing the pair of levers 130 and 131 together in the X ₂ direction.
32 and 133, and a guide wall 134 that is perpendicular to the partition wall 2 that is erected upward from the end 12d in the Z ₁ direction on the drive mounting table 12.

Then, a pair of fixed guides 124, a pair of guide rails 125 and a pair of guide rollers 126, 1
A guide mechanism 135 for guiding the disk drive 6 in the Z ₁ and Z ₂ directions is constituted by 27 and the guide wall 134.
A guide mechanism 136 for guiding the disk drive 6 in the X ₁ and X ₂ directions is constituted by the above.

Next, at the end portion of the partition wall 2 in the Z ₁ direction, on the side surface on the drive mounting table 12 side, a positioning pin horizontally projected in the X ₂ direction which is parallel to the front surface 1a of the changer body 1 is provided. 137 is attached. Then, on the side surface 6b of the disk drive 6 in the X ₁ direction, Z ₁ , Z ₂
A pair of positioning plates 138 are attached to both ends in the direction, and positioning holes 139 to be inserted into the positioning pins 137 are formed in the positioning plate 138 on the Z ₁ direction side. In addition, the end 12a of the drive mounting table 12 in the Z ₂ direction
A latching type locking mechanism 140 for hooking and locking the tip 131a of the lever 131 is attached to the outside of the.

Next, the mounting operation of the disk drive 6 on the drive mounting table 12 will be described.

First, as shown in FIGS. 47 and 50B, the disk drive 6 is mounted on the end 12a side of the drive mounting table 12 from the Z ₁ direction, and the pair of guide rails 125 are paired. The ball guides 12 are inserted into the fixed guide 124 from above and the pair of ball casters 12 on the end 12a side thereof.
A pair of guide rails 125 is placed on the table 3.

Next, as shown in FIG. 48, the pair of guide rails 125 are slid on the pair of ball casters 123 by the rolling action of these ball casters 123, and the disk drive 6 is driven. It is inserted horizontally on the mounting table 12 in the Z ₁ direction.

At this time, the pair of guide rails 125 are guided by the pair of fixed guides 124, and the pair of guide rollers 126, 127 are urged to move in the X ₂ direction by the pair of extension coil springs 132, 133.
By, supposed to be the side surface 125b of the X ₂ direction side surface 125a and the X ₁ side of the guide rail 125 in the X ₁ direction in the X ₂ direction side of the guide rail 125 is guided drive disk drives 6 Z ₁ on the table 12
It can be inserted parallel to the direction.

[0143] Then, as shown in FIG. 48, when the disk drive 6 is completely inserted from Z ₁ direction on the drive table 12, Z ₁ of the pair of guide rails 125,
Both ends in the Z ₂ direction are completely placed on the four ball casters 123, and the Z of the pair of guide rails 125 is set.
_The pair of fixed guides 124 are relatively pulled out in the Z ₂ direction from the ends in the ₂ directions, and the Z _{1 of the} disk drive 6 is
The side surface 6c in the direction contacts the guide wall 134 in parallel.

The state shown in FIG. 48 is the mounting position. In this mounting position, the pair of guide rails 1
25 are mounted on four ball casters 123, and the disk drive 6 is mounted on the drive mounting table 12 by the rolling action of these ball casters 123.
Above, it becomes possible to slide lightly in the biaxial directions of the Z ₂ direction and the X ₁ and X ₂ directions.

Then, next, in FIG. 49 and FIG.
As shown in, hold the tip 131a of the lever 131,
This lever 131 is rotated around the fulcrum shaft 129 in the X ₁ direction against the tension coil spring 133.

Then, the guide roller 127 causes the Z of the side surface 125b on the X ₂ direction side of the guide rail 125 on the X ₁ direction side.
_1, the substantially central portion of the Z ₂ direction to press the X ₁ direction, the disc drive 6 is lightly slide parallel to direction X ₁ and the guide wall 134, a pair of positioning plates 138 from the direction X ₁ to the partition 2 While being abutted, one positioning plate 13
8 positioning holes 139 are inserted into the positioning pins 137 from the X ₁ direction to accurately position the disk drive 6 at the reference position on the drive mounting table 12. At this time, the guide roller 126 escapes in the X ₁ direction against the tension coil spring 132.

Therefore, if the tip 131a of the lever 131 is locked (locked) by the lock mechanism 140, the disk drive 6 can be completely fixed on the drive mounting table 12, and the disk drive on the drive mounting table 12 can be fixed. The mounting operation of 6 is completed.

The state shown in FIGS. 49 and 50C is the positioning position, and when the disk drive 6 is removed from the drive mounting table 12, the lock mechanism 1
The lock of the lever 131 by 40 is released, and the pressing roller 127 is returned in the X ₂ direction by the tension coil spring 133. Then, the disk drive 6 is slid on the four ball casters 123 along the guide wall 134 in the X ₂ direction to the mounting position shown in FIG. At this time, the guide roller 127 serves as a stopper to set the mounting position of the disk drive 6, and the pair of guide rails 125 are in phase with the pair of fixed guides 124. Therefore, the disk drive 6 is replaced by the drive mounting table 1
2 Can be freely extracted in the Z ₂ direction from above.

According to the drive mounting mechanism constructed as described above, the heavy disk drive 6 is simply mounted on the drive slide mechanism 122 on the drive mounting table 12, and thereafter the drive slide mechanism 122 is used. Set the disk drive 6 to Z ₁ , Z ₂ direction and X ₁ , X ₂
It can be very easily slid in two axial directions.

Therefore, the mounting work of the disk drive 6 on the drive mounting table 12 and the positioning work of the disk drive 6 by the positioning pin 137 can be carried out very easily. Moreover, at this time, the disk drive 6 is mounted on the drive mounting table 12 from the front surface 1a side of the changer body 1 in the Z direction.
After insertion in _one direction, by a right angle slid X ₁ direction is towards one side, transversely of the positioning pin 137 so as to insert the X ₁ direction, substantially the disc drive 6 L
Since the plurality of changer main bodies 1 are arranged side by side in the lateral direction so that the left and right side surfaces 1c thereof are adjacent to each other, the disk drives 6 are slid on the front side of the changer main body 1. 1
It can be easily mounted and dismounted from the a side. Therefore, maintenance of the disk drive 6 can be easily performed.

In this embodiment, the positioning hole 139 of the disk drive 6 is inserted into the positioning pin 137 mounted on the partition wall 2 from the X ₁ direction for positioning, but conversely, it is mounted on the disk drive 6. Alternatively, the positioning pin 137 may be inserted into the positioning hole 139 formed in the partition wall 2 from the X ₁ direction for positioning.
Further, this drive mounting mechanism can be applied to a mounting device for mounting the disk in / out port 7 on the drive mounting table 12.

[Explanation of disk in / out port]
Next, the disk in / out port 7 will be described with reference to FIGS.

First, as shown in FIGS. 51 to 53, the disk in / out port 7 is housed in a dustproof casing 144 having a hermetically sealed structure. The front surface 144a of the dustproof casing 144 faces the front surface of the changer body 1, and the tray entrance 17 is opened in the front surface 144a. Then, the disk entrance / exit 15 provided on the side surface 144b of the dustproof casing 144 on the partition wall 2 side.
33 by means of the dustproof member 96 in the communication hole 16 of the partition wall 2.
And the disk drive 6 described in FIG. 34 is connected in an airtight manner.

A slide type disc tray 145 is horizontally inserted into and removed from the disc in / out port 7 by a tray slide mechanism 155, which will be described later, in the Z ₁ and Z ₂ directions which are the front and rear directions. Is used. Then, as shown in FIG. 51 and FIG.
5 is pulled out from the inside of the disc in / out port 7 in the Z ₂ direction through the tray inlet / outlet 17, and the disc 3 is horizontally mounted on the disc mounting table 146 on the disc tray 145. As shown in (B), the operator inserts the disk tray 145 into the disk.
The disc 3 is inserted into the in / out port 7 in the Z ₁ direction, and the disc 3 is set horizontally in the disc in / out port 7.

At this time, the disk mounting table 146 on the disk tray 145 is moved to the disk-in / out position by the pair of positioning pins 147 via the limiter mechanism 161 described later.
The disk 3 is positioned at a predetermined position in the out port 7, the disk 3 is centered on the center P ₁₂ of the hand 8 on the carrier 9, and the disk tray 145 is locked by an electromagnetic locking mechanism 148 using a plunger solenoid. To be done.

Then, after this, the hand 8 on the carrier 9
Is horizontally inserted from the X ₁ direction into the disc in / out port 7 through the communication hole 16 and the disc inlet / outlet port 15, and the disc 3 from the disc shelf 4 described above with reference to FIGS. By the same operation as the take-out operation, the disk mounting table 14 of the disk tray 145 is
The disk 3 on 6 is put into the carrier 9 by the hand 8
_It is designed to be ejected in _two directions.

Then, as shown in FIGS. 52 and 53A, when the disc tray 145 is inserted into the dustproof casing 144 in the Z ₁ direction and locked by the electromagnetic lock mechanism 148, the dustproof casing 144 is On the front surface 144a, a square and ring-shaped dustproof member 149 (made of the same material as the dustproof member 96 shown in FIGS. 33 and 34) is attached along the outer periphery of the tray entrance / outlet 17. ,
The front panel 145a of the disc tray 145 is Z ₁
The tray inlet / outlet 17 is configured to be airtightly sealed by pressure bonding from the direction.

Therefore, at the time when the disc 3 is set in the disc in / out port 7 by the disc tray 145, the inside of the disc in / out port 7 is completely sealed, which will be described with reference to FIGS. 17 and 18. Also, the changer body 1 is configured so as to be connected in an airtight manner to the sealed area 33 inside.

When ejecting the disc 3 on the disc shelf 4 in the changer body 1 to the outside of the changer body 1, the disc 3 taken out from the disc shelf 4 by the carrier 9 and the hand 8 is used as the disc in / out port 7. The disk 3 is discharged onto the inner disk tray 145 from the X ₁ direction, and the disk 3 is discharged to the outside of the disk in / out port 7 by the disk tray 145 in the Z ₂ direction.

Therefore, according to the disc in / out port 7, the changer body 1 is supplied from the outside of the changer body 1 even during the operation of the disc changer.
It is possible to safely and freely insert and eject the disc 3 onto and from the disc shelf 4 inside.

The electromagnetic lock mechanism 148 includes a lock lever 151 that is automatically engaged with a locked pin 150 attached to the end of the disc tray 145 in the Z ₁ direction by a spring mechanism, and the lock lever 151. Has a plunger solenoid 152 that locks the lock pin 150 in the engaged state.

The electromagnetic lock mechanism 148 causes the disk tray 145 to move to the disk
Inadvertently jumping out of the in / out port 7 in the ZX ₂ direction, or the hand 8 passing the disk 3 between the disk in / out port 7 and the carrier 9 in the X ₁ and X ₂ directions. Inside, the disk tray 145 is Z
It prevents accidental sliding in the ₁ and Z ₂ directions.

The tray inlet / outlet 17 is constructed to be slightly larger than the outer diameter of the disc 3 so that a person can forcibly insert a hand or the like into the disc in / out port 7 from the tray inlet / outlet 17. It is configured so that it cannot. This is to prevent human hands from touching the servo system such as the carrier 9 and the hand 8.

Details of the disc tray 145 will be described below with reference to FIGS.

First, as shown in FIGS. 54 to 56, the disk mounting table 146 is formed of a substantially rectangular horizontal plate having a width I which is substantially the same as the width A of the disk shelf 4 described in FIG. There is. Disc-shaped disc support portions 153 are attached to the four corners of the disc mounting table 146,
A centering guide 154 having a cone-shaped upper end is attached to the center of these disk support portions 153. The outer periphery 3b of the disc 3 is inserted into the centering guides of the four centering guides 154, centered, and horizontally mounted on the four disc supporting portions 153.

Although not shown, the disk supporting portion 153 is formed in a taper surface which is gradually inclined downward toward the center of the disk 3, and the centering effect of the disk 3 and the disk 3 are provided. Recording surface 3 of lower surface 3c
It is configured so that the effect of preventing the damage of e can be obtained.

Next, as shown in FIG. 55, the disc tray 145 is moved to the inside and outside of the disc in / out port 7 by Z.
_The slide mechanism 155, which slides in the ₁ and Z ₂ directions with a large stroke, is a pair of left and right parallel to the Z ₁ and Z ₂ directions and fixed on the bottom 144c in the dustproof casing 144 at intervals in the X ₁ and X ₂ directions. Of the vertical guide rails 156 and the pair of left and right guide rails 156 on the outside of Z ₁ , Z ₂
Upper and lower horizontal guide rollers 157 mounted at regular intervals in the horizontal direction, and horizontally folded back inward from the lower ends of both side surfaces 145b of the disc tray 145 in the X ₁ and X ₂ directions to form horizontal two upper and lower horizontal guide rollers. The horizontal guide rail 158 horizontally guided between the 157 and the disk tray 14
5 of X _1, X ₂ direction Z which is fixed to the lower surface of the substantially central portion
₁ , a vertical guide 160 parallel to the Z ₂ direction, and a bottom 144
The vertical guide rails 16 are mounted on the left and right sides of the vertical guide rail 160 at regular intervals in the Z ₁ and Z ₂ directions with the c.
Two vertical guide rollers 159a for guiding 0,
The pair of left and right vertical guide rails 156 are mounted inside the pair of left and right vertical guide rails 156 and on the lower surface of the disc tray 145 at regular intervals in the Z ₁ and Z ₂ directions.
Left and right vertical guide rollers 159 guided inside
and b.

According to this tray slide mechanism 155,
The disc tray 154 does not rattle due to vibrations at all, and moreover, the disc tray 145 can be stably slid in the Z ₁ and Z ₂ directions with a large stroke.

Next, as shown in FIGS. 54 to 56, in the limiter mechanism 161, the disk mounting base 146 is horizontally fixed on the slide base 163 having a substantially U-shaped vertical cross section. Vertical left and right side plates 162a
A total of four guide rollers 163, which are spaced in the Z ₁ and Z ₂ directions, are attached to the inside of the disk, and a total of four guide grooves 164 are formed in the left and right side surfaces 145b of the disc tray 145 at intervals in the Z ₁ and Z ₂ directions. And form a total of four guide rollers 163 in the total of four guide grooves 164, respectively.
It is inserted so that it can move freely in the ₁ and Z ₂ directions. The disk mounting table 146 is horizontally supported at a predetermined height by the slide table 162 with respect to the disk tray 145, and the disk mounting table 162 is integrated with the slide table 162 with respect to the disk tray 145 within a certain range (guide groove). It is assembled so that it can slide in the Z ₁ and Z ₂ directions within the length range of 164). Then, a limiter spring 167 composed of a tension coil spring is attached between a pair of spring locking portions 165 and 166 integrally formed on the upper portion of the disc tray 145 and the lower portion of the slide base 162, and the disc tray 145 is attached to the disc tray 145. The mounting table 146 is urged to slide in the Z ₁ direction so that the total of four guide rollers 163 are positioned by the end portions 164a of the total of four guide grooves 164 in the Z ₁ direction.

Then, the pair of positioning pins 147 are provided on both sides of the disc tray 145 in the X ₁ and X ₂ directions in the dustproof casing 14.
4 is vertically planted on the bottom portion 144c, and a tapered groove 168 is formed at the upper end of the pair of positioning pins 147. Then, at both ends in the X ₁ and X ₂ directions of the disk mounting table 146, the V-shaped groove 169 and the step portion 1 which are engaged and abutted in the pair of tapered grooves 168 on the end faces on the Z ₁ direction side from the Z ₁ direction.
70 is formed.

According to this limiter mechanism 161, FIG.
2 and FIG. 53, the disc tray 145
Z in the disk in / out port 7₁ Insert from direction
When the locked pin 150 is inserted, the electromagnetic lock mechanism 14
Immediately before being locked by
As described above, the V-shaped groove 169 and the stepped portion of the disk mounting table 146
170 is a pair of locating pins 147 with tapered grooves 168
Z in₁ Against the limiter spring 167 from the direction
Are combined. Then, the disk mounting table 146 becomes X. ₁ , X₂ 
Direction, Y₁ , Y₂ Direction and Z₁ , Z₂ In the three axial directions
It is positioned with high precision and the disk 3 is in the hand 8
Center P₁₂Be positioned on the top with extremely high precision
become.

Immediately after this, the disk mounting table 14
6 the disc tray 145 is the limiter spring 16
It is slightly slid in the Z ₁ direction against 7 and the locked pin 150 is locked by the electromagnetic locking mechanism 148. Then, the pressure-bonded state of the disk mounting table 146 with respect to the pair of positioning pins 148 from the Z ₁ direction is maintained as it is.

Therefore, according to the disk in / out port 7, the large slide stroke of the disk tray 145 by the tray slide mechanism 155 causes
The disk 3 can be easily inserted and ejected, and the disk 3 can be positioned on the center P _{12 of the} hand 8 with extremely high accuracy by the pair of positioning pins 147 and the limiter mechanism 168.
Hand 8 between in / out port 7 and carrier 9
The disk 3 can be smoothly transferred in the X ₁ and X ₂ directions.

[Explanation of Sealing Structure of Cable Insertion Portion of Partition Wall in Changer Body] Next, the sealing structure of the cable insertion portion of the partition wall 2 in the changer body 1 will be described with reference to FIGS. 70 and 71.

As shown in FIGS. 17 and 18, the inside of the changer body 1 of this disc changer is divided into a sealed region 33 and a sealed region 34 by partition walls 2 and 18. Therefore, when an attempt is made to electrically connect the sealed region 33 and the sealed region 34 by the cable 178 that inserts the partition walls 2 and 18, a problem arises in the dustproof property of the connector insertion portion in the sealed region 33.

Therefore, as shown in FIGS. 70 and 71,
An opening 173 is formed in the cable insertion portion 172 of the partition walls 2 and 18, and the connector board 174 and the dustproof member 175 are closed by a plurality of set screws 176 so that the opening 173 is sealed by the connector board 174 and the dustproof member 175. It is attached to the partition walls 2 and 18 so as to be fastened together. Then, by connecting a plurality of cables 178 to the plurality of connectors 177 of the connector board 174 from both sides of the connector board 174 on the sealed area 33 side and the non-sealed area 34 side, the dust-proof property of the connector insertion portion 172 in the sealed area 33 is obtained. Can be easily secured. The connector board 174 is attached, for example, at a position shown in FIG.

[Explanation of Disc Changer Carrier and Bi-Hand Control Circuit] Next, the control circuit of the disc changer carrier 9 and the hand 8 will be described with reference to FIG.

First, the drive circuit 192 of the motor 48 for driving the carrier 9 in the Y direction and the motor 64 for driving the hand 8 in the X direction are controlled by the CPU 195 which is a centralized control circuit. The output pulses of the encoder 180 that measures the amount of movement of the carrier 9 in the Y direction and the encoder 181 that measures the amount of movement of the hand 8 in the X direction are respectively counted by counters 191 and 193 and input to the CPU 195. Then, in the carrier 9, a hand origin sensor 1 for detecting the origin of the hand 8.
82, a hand protrusion sensor 1 for detecting protrusion from the carrier 9 of the hand 8 to the disc shelf 4 side, the disc drive 6 side, and the disc in / out port 7 side.
83, a carrier origin sensor 184 for detecting the origin of the carrier 9, a pair of upper and lower initial sensors 185, 186 for detecting the Y direction position of the disk shelf 4, the Y direction positions of the disk drive 6 and the disk in / out port 7 are detected. Initial sensor 187, disk shelf 4
A disk presence sensor 188 for detecting the presence or absence of the upper disk 3, a disk shelf detection sensor 189 for detecting the position of the disk shelf 4 in the X direction, and the like are provided. And
The outputs of these sensors 182 to 189 are input to the CPU 195 via the interface 194.

Then, the CPU 195 makes the encoder 18
0 and 181, the movement amount of the carrier 9 in the Y direction and the movement amount of the hand 8 in the X direction are stored in the memory circuit 196.
To memorize. Further, the CPU 195 uses the sensors 182.
To 189, the drive circuit 192 is controlled based on the detection information, and the detection information from the sensors 182 to 189 is arbitrarily stored in the memory circuit 196.

The encoder 180 for measuring the amount of movement of the carrier 9 in the Y direction is composed of an encoder integrated with the motor 48 as shown in FIG.

Next, as shown in FIG. 25, the encoder 181 for measuring the amount of movement of the hand 8 in the X direction,
4 and an integral encoder.

Next, the hand origin sensor 182 for detecting the origin of the hand 8 is, as shown in FIG. 25 and FIG.
The shutter 9 is attached to the carrier 9 and is composed of a light transmissive sensor in which light is blocked and transmitted by a shutter plate 198 that is integral with the slide plate 56 of the slide unit 52 that is the detected part.

Next, the hand protrusion sensor 183
As shown in FIGS. 25 and 27, the hand origin sensor 182 is attached to both ends in the X ₁ and X ₂ directions of the shutter plate 198 which is attached to the carrier 9 and is the detected portion.
It is composed of a light-transmissive sensor that cooperates with the detection.

Next, as shown in FIGS. 14 and 25, a carrier origin sensor 184 for detecting the origin of the carrier 9 in the Y direction is attached to the carrier 9 and is attached to the partition wall which is the detected portion. The shutter plate 199 is composed of a light-transmissive sensor that blocks and transmits light.

Next, as shown in FIGS. 25 and 57, a pair of upper and lower initial sensors 185 and 186 for detecting the position of the disk shelves 4 in the Y direction are attached to the carrier 9 and the tips of all the disk shelves 4 are attached. It is configured by a light-transmissive sensor in which light is blocked and transmitted by a shutter plate 200 that is a detected portion attached to the side surface of the portion 4c in a line in the Y direction.

Next, the disk drive 6 and the disk
As shown in FIG. 25, the initial sensor 187 for detecting the position of the in / out port 7 in the Y direction is used for the carrier 9
And is configured by a light reflection type sensor that receives the light reflected by the reflection plate 201 with the hole 201a that is the detected portion.

Next, as shown in FIG. 25, a disk presence / absence sensor 188 for detecting the presence / absence of the disk 3 on the disk shelf 4 is attached to the carrier 9 and is composed of a light emitting element 188a and a light receiving element 188b. It is composed of a transmissive sensor.

Next, the disk rack position detection sensor 189 for detecting the position of the disk rack 4 in the X direction is shown in FIGS.
8 to 60, the shutter plate 203 is attached to the shelf base 11 and is attached to one end of the hand main portion 26 of the hand 8 and is configured by a light transmission type sensor that blocks and transmits light. Has been done.

[Description of Disc Presence / Absence Detection Device on Disc Shelf] Next, referring to FIGS. 25, 28, 29 and 75, the presence or absence of the presence or absence of the disc 3 horizontally mounted on the disc shelf 4 will be detected. The detection device will be described.

First, the light transmission hole 2 formed of an elongated hole parallel to the Z ₁ and Z ₂ directions is formed in the center of the disk shelf 4 on the side of the tip 4c.
02 is formed. And this light transmission hole 202
28, the disc 3 is placed on the disc shelf 4 as shown in FIG.
When there is no disc, it is opened and is closed by the disc 3 horizontally mounted on the disc shelf 4, as shown in FIG.

Then, the disc presence / absence sensor 188 constituted by the light emitting element 188a and the light receiving element 188b attached to the carrier 9 transmits the light f ₁ into the light transmitting hole 202 between the upper and lower disc shelves 4 from the upper and lower diagonal directions. as through the light emitting element 188a and the light receiving element 188b on both sides of Z _1, Z ₂ direction of the disc rack board 4, parallel to the Z _1, Z ₂ direction and an angle to Y _1, Y ₂ direction It is arranged so as to be inclined to face each other.

According to this disc presence / absence detecting device, as shown in the control circuit of FIG. 72 and the flow chart of FIG. 75, the carrier 48 is moved in the Y ₁ direction or the Y ₂ direction by the motor 48 so that the motor 48 moves. Encoder 18
The movement amount of the carrier 9 is measured by 0, the encoder pulse is counted by the counter 191, and the CPU 19
5, the position of each disk shelf 4 is sequentially detected.

The presence / absence of the disc 3 is sequentially detected by the disc presence / absence sensor 188 for each disc shelf 4. The information of “with disk” or “without disk” on each disk shelf 4 is stored in the CPU.
It is sequentially stored in the memory circuit 196 by 195. And the disc 3 for all 100 shelves 4
When the presence / absence detection is performed, the operation ends.

At this time, as shown in FIG. 28, if there is no disk 3 on the disk shelf 4, the light f ₁ emitted from the light emitting element 188a passes through the light transmitting hole 202 and the light receiving element 18 is emitted.
Since the light is received by 8b, the disk presence sensor 188 is turned on and "no disk" is detected.

Further, as shown in FIG. 29, the disc shelf 4
If the disk 3 is horizontally placed on the light emitting element 1,
The light f ₁ emitted from 88a is blocked by the disc 3 and is not received by the light receiving element 188b, the disc presence sensor 188 is turned off, and "disc present" is detected.

By the way, according to this disc presence / absence detecting device, even if the bare disc 3 on the disc shelf 4 is slightly displaced, the presence / absence of the bare disc 3 can always be detected with high accuracy.

[Explanation of Y-direction Position Detection Device for Disk Shelf] Next, referring to FIGS. 25, 28, 29, 57, 72 and 73, a device for detecting the Y-direction position of the disk shelf 4 will be described. explain.

First, the shutter plates 200, which are detected portions, are arranged in a line in the Y direction along one side surface of the tip end portion 4c which is a free end of each disk shelf 4 attached to the shelf base 11 by the cantilever support structure. Is attached to.
Note that these shutter plates 200 are used for each disc shelf 4
Disk mount 2 made of synthetic resin mounted on top
The shutter plate 200 is formed integrally with one side portion of the disc 3, and the width of these shutter plates 200 in the Y direction is formed to be slightly larger than the plate thickness of each disk shelf 4.

When the position of the disk shelf 4 in the Y direction is detected, as shown in the control circuit of FIG. 72 and the flowchart of FIG. 73, first, the carrier 9 is moved in the Y ₁ direction or the Y ₂ direction by the motor 48 to set the carrier origin. Sensor 184
The origin of the carrier 9 in the Y direction is detected by.

Next, the motor 48 moves the carrier 9 in the Y ₁ direction or Y ₂ direction from its origin, the encoder 18 of the motor 48 measures the amount of movement of the carrier 9, and the encoder pulse is counted by the counter 191. I will count.

Then, the initial sensors 185, 18
The position in the Y direction of each shutter plate 200 of each disk shelf 4 is sequentially detected by either one or both of the six.
The initial sensors 185, 186 are the shutter plates 2
The Y-direction position of each disk shelf 4 is measured by the value of the encoder pulse when the Y-direction position of 00 is sequentially detected,
The value of the encoder pulse at that time is sequentially stored in the memory circuit 196 by the CPU 195.

When the Y-direction positions of all 100 shelves of discs are detected and the encoder pulse reaches a predetermined value, the carrier 9 is moved to the origin and the operation is completed.

Then, actually, during operation (when the disk 3 is automatically replaced), 1 stored in the memory circuit 196 is stored.
Based on the Y-direction position information of all the 00 shelves 4, the hand 8 is controlled to be positioned with respect to each disc shelf 4.

Therefore, according to the Y-direction position detecting device of the disk shelves 4, the Y-direction position of the shutter plate 200 attached to the tip end portion 4c of each disk shelf 4 is detected by the initial sensors 185 and 186, It is possible to directly and accurately detect the absolute position of the tip end portion 4c of each disc shelf 4 in the Y direction.

Therefore, the Y of the tip portion 4c of each disk shelf 4
The directional position can be accurately detected without error, and the transfer operation of the disk 3 in the X ₁ and X ₂ directions by the hand 8 between each disk shelf 4 and the carrier 9 is safe based on the detected information. And, it can be done accurately.

Particularly, all 100 shelves of disc shelves 4 are cantilevered on the shelves base 11 by these bases 4b,
Since the free end portions 4c of the disk shelves 4 are structured to easily change in the Y direction, the Y portions of the free end portions 4c of the disk shelves 4 are Y.
It is important to be able to accurately detect the directional position without error.

Then, the initial sensors 185, 18
Since 6 is attached to the carrier 9 and the shutter plate 200 is attached to all 100 shelves of the disk shelves 4, the number of the initial sensors 185 and 186 can be reduced and the cost can be reduced. In addition, since each shutter plate 200 is integrally formed on the disk mounting portion 23 with synthetic resin, there is an effect that the number of parts and the number of assembling steps can be reduced, and the cost can be reduced.

The initial sensor may be a light reflection type sensor, and the detected portion provided on the disk shelf 4 may be a light reflection plate.

[Explanation of X-direction position detecting device for carrier and disk shelf] Next, FIGS. 25, 27, 58 to 60,
72 and 74, the carrier 9 and the disc shelf 4
The position detecting device in the X direction will be described.

First, the origin P ₁ of the hand 8 in the carrier 9
Is detected by the hand origin sensor 182 and the shutter plate 198 that is the detected portion. And up and down 4
A light transmissive disc shelf position detection sensor 189 is attached to one side surface of a central portion of the shelf base 11 in the Y direction, and a shutter plate 203, which is a detected portion thereof, is a main part of one hand of the hand 8. It is attached to the end portion of the 26 on the X ₁ direction side.

When detecting the position of the carrier 9 and the disc shelf 4 in the X direction, as shown in the control circuit of FIG. 27 and the flowchart of FIG. 74, the carrier 9 is moved in the Y ₁ direction or Y direction.
_After moving in _two directions, the carrier 9 is moved to the first position of the four upper and lower disc shelf position detecting sensors 189 and stopped.

Then, as shown in FIG. 58, the hand 8 is moved to the origin P ₁ on the carrier 9 and detected by the hand origin sensor 182. At this time, the shutter plate 20
3 moves to the origin P ₁₀₀ .

Next, the hand 8 is moved to X ₁ by the motor 64.
Direction, the amount of movement of the hand 8 from the origin P ₁ to the direction X ₁ is measured by the encoder 181, the encoder pulse is counted by the counter 193, and the CPU 1
Enter in 95.

Then, as shown in FIG. 59, the shutter plate 203 detects the actual movement amount L ₁ of the hand 8 from the origin P ₁₀₀ to the disc shelf detection position P ₁₀₁ detected by the disc position detection sensor 189 as an encoder pulse. The value is measured according to the value of and is stored in the memory circuit 196 by the CPU 195.

Then, the actual movement amount L ₁ of this hand 8
Thus, the distance L ₂ between the origin P ₁ in the carrier 9 of the hand 8 and the center position P ₂ of the disc shelf 4 is measured.

Then, the position detection operation of the carrier 9 and the disc rack 4 is sequentially performed by the disc rack position detection sensors 189 in the upper and lower four stages, and the operation is completed.

Then, during the actual operation (when the disk 3 is automatically replaced), based on the information stored in the memory circuit 196, the carrier 9 and the disk shelves are divided into blocks for the upper and lower four shelves base 11 respectively. The movement amount L ₁ of the hand 8 in the X ₁ and X ₂ directions with respect to the disk 4 is set, and the disc 3 is transferred between the disk shelf 4 and the carrier 9 in the X ₁ and X ₂ directions.

Therefore, X of the carrier 9 and the disc shelf 4
According to the direction position detecting device, the hand origin sensor 182
The distance L ₂ between the carrier 9 and the disk rack 4 is measured and stored by measuring the actual movement amount L ₁ of the hand 8 between the disk rack position detection sensor 189 and the disk rack position detection sensor 189, and based on the stored information. Since the movement amount L ₁ between the carrier 9 of the hand 8 and the disc shelf 4 is set and used, even if there is a variation in the distance between the carrier 9 and the disc shelf 4, the variation can be dealt with according to the variation. The movement amount L ₁ of the hand 8 can be accurately set and used.

As a result, the delivery of the disc 3 by the hand 8 between the carrier 9 and the disc shelf 4 is always safe and without being affected by the variation in the space between the carrier 9 and the disc shelf 4. , Can be done accurately.

Further, it is not necessary to set the space between the carrier 9 and the disk shelf 4 with high precision, the manufacturing and assembling precision of the parts can be relaxed, and the highly precise space adjusting work at the time of assembling can be reduced. Therefore, the cost can be significantly reduced.

Therefore, the disk shelf position detecting sensor 18
It is no longer necessary to provide 9 on all 100 shelves of disk shelves 4, and one can be provided on each of the upper and lower four shelved blocks, and the number of disk shelf position detection sensors 189 can be greatly reduced.

The hand origin sensor 182 and the disc shelf position detecting sensor 189 may be replaced with a light reflection type sensor.

[Explanation of Hand Protrusion Detection] FIG. 25,
As shown in FIGS. 27 and 72, the carrier 9 of the hand 8
The protruding state from the inside to the disk shelf 4 side, the disk drive 6 and the disk in / out port 7 side is the shutter plate 198 which is a detected part moved in the X ₁ and X ₂ directions in synchronization with the hand 8. The hand protrusion sensor 18 which is turned on and off by the shutter plate 198.
3 and the hand origin sensor 182 are detected together with the protruding direction of the hand 8, and are stored in the memory circuit 196 by the CPU 195.

[Explanation of Y-direction Position Detection Device for Disk Drive] Next, referring to FIGS. 25, 66, 67, 72 and 76, Y of the disk drive 6 and the disk in / out port 7 by the carrier 9 will be described. The directional position detecting device will be described.

The reflective plate 201 which is the detected portion detected by the initial sensor 187 which is a light reflection type sensor attached to the carrier 9 has a total of eight stages of the disk drive 6 and one disk in / out port 7. Is attached to.

[0226] Then, when detecting the Y-direction position of the disk drive 6 and the disc-in-out port 7, as shown in the flow chart of the control circuit and Figure 76 of FIG. 72, Y ₁ direction or Y carriers 9 from the origin _It is moved in _two directions and the amount of movement is measured by the encoder 1 of the motor 48.
Measured by 80, the encoder pulse is counted by the counter 191 and input to the CPU 195.

Then, each disk drive 6 and disk in / out port 7 are connected by the initial sensor 187.
The respective reflection plates 201 are sequentially detected, and the value of the encoder pulse at that time is sequentially stored in the memory circuit 196 by the CPU 195. Then, after the detection of the reflecting plates 201 of 9 stages in total is completed, when the encoder pulse reaches a predetermined value, the carrier 9 is moved to the origin, and the operation is completed.

At this time, regarding the disk drive 6,
As shown in FIGS. 33 and 34, the recording and / or reproducing unit 5 is housed in the dustproof casing 89, and the dustproof casing 89 is elastically supported by the four dampers 91 on the bottom chassis 92 of the main body exterior 88, That is, it is floating.

Therefore, as shown in FIGS. 66 and 67,
The reflection plate 201 is directly attached to the mechanical chassis 90 or the like, which is the reference position in the dustproof casing 89, by the bracket 204, the reflection plate 201 is arranged in a part of the disk entrance / exit 15, and the reflection plate 201 is detected by the initial sensor 187. I was trying to detect.

As a result, even if the position of the recording and / or reproducing section 5 in the Y direction inside the main body exterior 88 of each disk drive 6 fluctuates due to the secular change of the damper 91 or the like, the recording and / or reproducing section 5 does not change. The position in the Y direction can be detected directly and accurately. Therefore, record and /
Alternatively, the carrier 9 can be positioned with high accuracy with respect to the reproducing unit 5, and the recording and / or reproducing unit 5 and the carrier 9 can be positioned.
It is possible to always stably perform the transfer operation of the disk 3 by the hand 8 between and. Since the mechanical chassis 90 of the dustproof casing 89 has high accuracy, if the reflecting plate 201 is directly attached to the mechanical chassis 90, even if the reflecting plate 90 is formed of inexpensive parts, the reference of the reflecting plate 90 will be used. The positional relationship with respect to the position can be obtained with high accuracy.

[Explanation of control device at power-on] Next, FIGS. 23, 24, 25, 26, 27 and 61.
65, 72, and 77, a control device for the carrier 9 and the hand 8 when the disk changer is powered on will be described.

This control device is provided with a carrier moving mechanism 13,
Hand movement mechanism 14, hand origin sensor 1 which is the first sensor for detecting the position of the hand 8 with respect to the carrier 9.
8 and a hand protrusion sensor 183, a pair of upper and lower initial sensors 185 and 186 that are the second sensors that detect the position of the hand 8 with respect to the disc shelf 4, and an initial that is a third sensor that detects the position of the hand 8 with respect to the disc drive 6. Sensor 187 and CPU 19
It has a control circuit and the like using 5.

When the power of the disc changer is turned on, as shown in the control circuit of FIG. 72 and the flow chart of FIG. 77, the hand 8 moves from the disc shelf 4 side to the disc drive 6 side at the moment when the power is turned on. It is detected by the hand origin sensor 182 and the hand protrusion sensor 184 whether or not it is protruding to the side.

When the hand 8 is protruding to the side of the disk shelf 4, the open / closed state of the shutter plate 200 of the pair of upper and lower initial sensors 185, 186 is detected, as shown in FIGS. 61 and 62.

At this time, as shown in FIG. 61A, when both the initial sensors 185 and 186 are open,
Alternatively, as shown in FIG. 61B, the upper initial sensor 185 is closed and the lower initial sensor 18 is closed.
When 6 is open, hand 8 against disk shelf 4
Has moved upwards too much, and in order to avoid interference with the disc shelf 4 on the upper side of the hand 8, the hand 8 is once moved downward and then pulled into the X-direction origin in the carrier 9.

As shown in FIG. 62A, when the upper and lower initial sensors 185 and 186 are both closed, the hand 8 is in the intermediate safety position between the upper and lower disc shelves 4, so that the hand 8 is used as it is as a carrier. Pull in to the X direction origin in 9.

Further, as shown in FIG. 26B, when the upper initial sensor 185 is open and the lower initial sensor 186 is closed, the hand 8 is lowered too downward, and the disc on the lower side of the hand 8 is lowered. In order to avoid interference with the shelf 4, the hand 8 is once moved upward, and then retracted to the origin in the X direction inside the carrier 9.

Further, when the hand 8 is protruding to the side of the disk drive 6 or the disk in / out port 7, as shown in FIGS. 63 and 64, it is irradiated by the initial sensor 187 and reflected by the reflection plate 201. The presence / absence of the light f _{2 that} is emitted is detected.

At this time, (A) in FIG. 63 and (B) in FIG.
As shown in, the reflected light f _{2 from the} initial sensor 187
When there is no light, the hand 8 is lowered once and the reflected light f ₂ of the initial sensor 187 is reflected by the upper edge 20 of the reflection plate 201 as shown in FIG. 63 (B) and FIG. 64 (A).
After the reflected light f ₂ is obtained at 1b or the lower edge 201c of the hole 201a, the hand 8 is pulled into the X-direction origin in the carrier 9.

Further, as shown in FIGS. 64A and 65B, when the reflected light f _{2 from the} initial sensor 187 is present, the hand 8 is once raised and then the hand of FIG. 65B and FIG. 65A, after the reflected light f ₂ is cut at the upper edge 201b of the reflection plate 201 and the lower edge 201c of the hole 201a, the hand 8 is moved to the origin in the X direction in the carrier 9. Pull in.

Thus, the upper edge 2 of the reflection plate 201 is
The hand 8 can be safely pulled back into the carrier 9 within a safe constant height h between 01b and the lower edge 201c of the hole 201a. Then, after the hand 8 is safely returned into the carrier 9 in this way, the carrier 9 is moved to the origin in the Y direction.

Therefore, when the carrier 9 is suddenly moved to the origin in the Y direction while the hand 8 is protruding toward the disc shelf 4 side, the disc drive 6 or the disc in / out port 7 side, the disc 3 or the device is damaged. It is prevented before it happens. As a result, even if the power supply is stopped during the replacement of the disk 3 due to a power failure or the like, at the next power-on, the hand 8 is always returned to the origin in the carrier 9, and then the carrier 9 is set to the origin in the Y direction. Can be initialized for a safe return.

When the hand 8 is not protruding to either the disk shelf 4 side or the disk drive 6 side when the power is turned on, the carrier 9 is of course immediately moved to the origin in the Y direction.

[Explanation of Device for Correcting Sensor Error]
68, 69, 72 and 78, an apparatus for correcting an error due to variations in the optical axis of the sensor will be described.

First, as shown in (A), (B) and (C) of FIG. 69, the reflection plate 201 which is a detected portion is detected by the initial sensor 187 which is a light reflection type sensor attached to the carrier 9. when positioning the carrier 9 to the disk drive 6 and the like, if there are variations in the optical axis f ₂ itself initial sensor 187 relative to the reference position P _104, the stop position of the carrier 9 with respect to the reference position P ₁₀₄ is variation in ΔL generated Resulting in.

Therefore, as shown in FIG. 68, the carrier 9
To the reference position P ₁₀₃ on the moving path 10 of the stopper 206
Is provided at a position of a constant distance L ₃ along the moving path 10 from the reference position P ₁₀₃ , and the reference reflection plate 2 serving as the reference detection unit.
07 is installed and the constant distance L ₃ is stored in the memory circuit 196.

At the start of the operation, as shown in the control circuit of FIG. 72 and the flowchart of FIG. 78, in FIG. 68, the carrier 9 is moved in the Y ₂ direction and brought into contact with the stopper 206, so that the carrier 9 is moved to the reference position P. Position at ₁₀₃ .

Next, the carrier 9 is inverted in the Y ₁ direction to start moving, and at the same time, the moving distance of the carrier 9 is measured by the encoder 180, and the encoder pulse is counted by the counter 191 and input to the CPU 195.

Then, the value of the encoder pulse when the initial sensor 187 detects the reference reflection plate 207 is detected, and the actual movement distance L ₂ of the carrier 9 from the reference position P ₁₀₃ to the reference reflection plate 207 is measured. .

Then, the actual moving distance L ₂ and the constant distance L ₃ previously stored in the memory are calculated by the CPU 195.
And the difference ΔL between the constant distance L ₃ and the actual movement distance L ₂ is detected. Then, the difference ΔL becomes a variation (error) of the optical axis f ₂ of the initial sensor 187.

Therefore, the difference ΔL is used as the variation of the optical axis f ₂ of the initial sensor 187 in the memory circuit 196.
When the initial sensor 187 detects the reflection plate 201 which is the detected portion of the disk drive 6 or the disk in / out port 7 and stops the carrier 9, the carrier 9 is stopped by the difference ΔL. Operate so that the position is always corrected.

As a result, even if the optical axis f ₂ of the initial sensor 187 itself varies, the carrier 9 can always be stopped accurately at the designated position, and the automatic exchange operation of the disk 3 can be performed accurately. .

Thus, the mounting position of the initial sensor 187 on the carrier 9 and the initial sensor 1
The adjustment of the mounting position of 87 can be eased, and the manufacture and assembly of the initial sensor 187 are facilitated.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made based on the technical idea of the present invention.

For example, in the above embodiment, a disc changer using a bare disc is shown as an example of the recording medium, but the present invention is not limited to this, and various types of disc cartridges, tape cassettes and the like can be used. It can be applied to various changers using a recording medium.

[0256]

The changer of the present invention constructed as described above has the following effects.

According to a first aspect of the present invention, recording media are held on a plurality of shelves, and the recording media are automatically exchanged between the shelves and the drives by a carrier moved along these shelves and the drives. At that time, a carrier attached to the carrier detects a plurality of detected parts arranged along the movement path of the carrier and stops the carrier at a designated position. After setting the once to the reference position by the stopper, start moving the carrier from the reference position,
A sensor attached to the carrier detects the reference detection unit that is set at a fixed distance from the reference position along the carrier movement path, and after the carrier starts moving from the reference position, the sensor detects the reference detection unit. The encoder measures the actual movement distance of the carrier until it is detected. Then, the difference between the actual movement distance of the carrier measured by the encoder and the predetermined distance between the reference position and the reference detection unit stored in advance is stored in the memory circuit as the sensor variation, and the carrier stop position is stored. Since only the above difference is corrected, the carrier can always be accurately stopped at the designated position even if the optical axis of the sensor varies. Therefore, the automatic replacement operation of the recording medium can be accurately performed without malfunction, and a high-quality changer can be provided.

According to the first aspect of the present invention, since the variation of the sensor is detected and stored and the stop position of the carrier is corrected, the mounting position of the sensor on the carrier and the adjustment of the mounting position of the sensor can be eased. , The assembly of the sensor becomes easy and the productivity is improved.

According to a second aspect of the present invention, the sensor is constituted by a light reflection type sensor and is constituted by the detected portion and the reference detected portion light reflecting plate, so that the variation of the optical axis of the sensor can be corrected.

According to the third aspect of the present invention, since the plurality of detected parts arranged along the carrier movement path detect the positions of the plurality of stages of drives, the carrier stop positions for the plurality of stages of drives are determined. Can be set accurately.

According to a fourth aspect of the present invention, a bare disk for recording and / or reproducing, which is a recording medium, is placed on the shelf, and the drive records and / or reproduces the bare disk. Since the carrier has a part and the hand has a hand for horizontally transferring the bare disk between the shelf and the drive, compared to a disk cartridge containing a disk, It is possible to increase the number of mounted changers and reduce the size of the changer.

[Brief description of drawings]

FIG. 1 is a schematic perspective view illustrating the start of a disc ejecting operation from a disc shelf by a hand of a carrier in an embodiment of a disc changer to which the present invention is applied.

FIG. 2 is a schematic perspective view for explaining the disc taking-out operation from the disc shelf by the hand of the carrier following FIG.

FIG. 3 is a schematic perspective view for explaining the disc taking-out operation from the disc shelf by the hand of the carrier following FIG.

FIG. 4 is a schematic perspective view for explaining the end of the operation of taking out a disc from the disc shelf onto the carrier by the hand of the carrier subsequent to FIG. 3;

5 is a schematic perspective view for explaining the disk mounting operation in the disk drive by the hand of the carrier following FIG. 4. FIG.

FIG. 6 is a schematic perspective view for explaining the disk mounting operation in the disk drive by the hand of the carrier following FIG.

FIG. 7 is a schematic perspective view illustrating the end of the disc mounting operation in the disc drive by the hand of the carrier following FIG. 6;

FIG. 8 is a plan view of FIG.

9 is a plan view of FIGS. 2 and 3. FIG.

FIG. 10 is a plan view of FIG.

11 is a plan view of FIGS. 5 and 6. FIG.

12 is a plan view of FIG. 7. FIG.

FIG. 13 is a partially cutaway plan view of the entire disc changer.

14 is a partially cutaway rear view of the entire disc changer taken along the line A1-A1 of FIG.

15 is a front view of the entire disc changer taken along the line A2-A2 of FIG.

16 is a partially cutaway side view taken along the line A3-A3 of FIG. 14 for explaining the partition wall in the disc changer.

FIG. 17 is a partially cutaway rear view similar to FIG. 13 illustrating a sealed area and a non-sealed area in the disc changer.

FIG. 18 is a plan view for explaining a sealed area and a non-sealed area in the disc changer, as viewed in the direction of arrows A4-A4 in FIG.

FIG. 19 is a partially cutaway rear view showing a first modified example of the method of arranging the disk shelves and the disk drives of the disk changer.

20 is a partially cutaway plan view of FIG. 19. FIG.

FIG. 21 is a partially cutaway rear view showing a second modified example of the method of arranging the disk shelves and the disk drives of the disk changer.

22 is a partially cutaway plan view of FIG. 21. FIG.

FIG. 23 is a rear view illustrating the carrier moving mechanism.

FIG. 24 is a side view taken along the line A5-A5 of FIG.

FIG. 25 is a plan view illustrating a hand moving mechanism on a carrier.

26 is a partially cutaway side view taken along the line B1-B1 of FIG.

27 is a sectional view taken along the line B2-B2 of FIG.

28A is a plan view of the disk presence / absence detection mechanism on the disk shelf at the time of detection of the absence of a disk, and FIG. 28B is a C1-C1 arrow view of FIG. 28A. FIG.

29A is a plan view of the disc presence detection mechanism on the disc shelf when a disc presence is detected, and FIG. 29B is a C2-C2 arrow view of FIG. 29A. FIG.

30 (A) is a cross-sectional view taken along the arrow C3-C3 of FIG. 29 for explaining the disc mounting portion of the disc shelf, and FIG. 30 (B) illustrates the disc holding portion of the hand. FIG. 26 is a sectional view taken along the line B3-B3 of FIG. 25.

FIG. 31 is a plan view illustrating a first modified example of the disk mounting portion of the disk shelf.

FIG. 32 is a plan view illustrating a second modified example of the disk mounting portion of the disk shelf.

FIG. 33 is a partially cutaway plan view illustrating a closed structure of a recording and / or reproducing unit of a disc drive.

34 (A) is a partially cutaway side view taken along the line D1-D1 of FIG. 33, and FIG. 34 (B) is a partial cutaway taken along the line D2-D2 of FIG. FIG.

35 (A) is an enlarged cross-sectional view taken along the line D3-D3 of FIG. 33 for explaining the damper of the disk drive, and FIG. 35 (B) is D4- of FIG. 35 (A). It is a partially cutaway plan view taken along the arrow D4.

FIG. 36 is a perspective view illustrating a mechanism for attaching a disk shelf to a shelf base.

37 is a perspective view of the shelf base of FIG. 36. FIG.

38 is a plan view of FIG. 36. FIG.

39 is a front view taken along the line E1-E1 of FIG.

40 is a partially cutaway side view taken along arrow E2-E2 of FIG. 38. FIG.

41 is an enlarged partial cutaway plan view illustrating the insertion guide of the disc shelf in FIG. 38. FIG.

42 is a side view taken along the arrow E3-E3 of FIG. 41.

FIG. 43 is a plan view for explaining the disk floating prevention structure on the upper part of the carrier.

44 is a partially cutaway side view taken along arrow F1-F1 of FIG. 43.

FIG. 45 is a partially cutaway plan view of the entire disc changer for explaining the method of mounting the disc drive on the drive mounting table.

FIG. 46 is a partially cutaway plan view for explaining the mounting mechanism of the disk drive on the drive mounting table.

FIG. 47 is a partially cutaway plan view for explaining the start of the mounting operation of the disk drive on the drive mounting table.

FIG. 48 is a partially cutaway plan view illustrating the middle of the mounting operation of the disk drive on the drive mounting table, following FIG. 47;

49 is a partially cutaway plan view for explaining the end of the mounting operation of the disk drive on the drive mounting table, which is subsequent to FIG. 48; FIG.

50 (A) is a front view taken along arrow F2-F2 of FIG. 46, and FIG. 50 (B) is F3-F3 of FIG.
FIG. 50 (C) is a front view in FIG.
FIG. 4 is a front view taken along arrow 4.

FIG. 51 is a partially cutaway plan view for explaining a disc tray withdrawn state of the disc in / out port. ,

52 (A) is a partially cutaway plan view for explaining the disc tray insertion state of the disc in / out port, and FIG. 52 (B) is a G1-of FIG. 52 (A).
It is a side view taken along the arrow G1.

53 (A) is a side view taken along the line G2-G2 of FIG. 51, and FIG. 53 (B) is a line G3-G3 of FIG. 52.
It is a side view in the direction of an arrow.

FIG. 54 is a plan view illustrating a limiter mechanism of the disc tray of the disc in / out port.

55 is a partially cutaway side view taken along arrow G4-G4 of FIG. 54.

56 is a partially cutaway side view taken along arrow G5-G5 of FIG. 54.

FIG. 57 is a perspective view illustrating a Y-direction position detecting device of a disc shelf by a carrier.

FIG. 58 is a plan view illustrating an X-direction position detection device for a carrier and a disc shelf.

FIG. 59 is a plan view for explaining the operation of the X-direction position detecting device in FIG. 58.

60 is a side view showing a shelf-based disc shelf position detection sensor of the X-direction position detection device of FIG. 58. FIG.

FIG. 61 is a schematic side view explaining the operation of pulling out the hand from the disk shelf when the power is turned on.

FIG. 62 is a schematic side view for explaining the hand extracting operation subsequent to FIG. 62.

FIG. 63 is a schematic side view explaining an operation of extracting a hand from the disk drive when the power is turned on.

64 is a schematic side view illustrating the operation of extracting the hand from the disk drive, which is subsequent to FIG. 63.

FIG. 65 is a schematic side view illustrating the operation of extracting the hand from the disk drive, which is subsequent to FIG. 64;

FIG. 66 is a partially cutaway plan view illustrating a reflection plate attached to a recording and / or reproducing unit in a disc drive and a light reflection type sensor attached to a carrier.

67 is a partially cutaway side view taken along the arrow H1-H1 of FIG. 66.

FIG. 68 is a schematic side view explaining the device for correcting the error of the sensor of the carrier.

FIG. 69 is a schematic side view for explaining a situation where the carrier is displaced due to an error in the carrier sensor.

FIG. 70 is a partially cutaway plan view illustrating a sealing structure of a cable insertion portion of a partition of the disc changer.

71 is a side view taken along the line I1-I1 of FIG. 70. FIG.

FIG. 72 is a block diagram illustrating a carrier and hand control circuit of the disc changer.

FIG. 73 is a flowchart diagram for explaining the Y-direction position detection operation of the disc shelf by the carrier.

FIG. 74 is a flowchart showing the operation of detecting the position of the disc shelf in the X direction with respect to the carrier.

FIG. 75 is a flowchart showing the operation of detecting the presence / absence of a disc on the disc shelf.

FIG. 76 is a flow chart diagram illustrating a Y direction position detection operation of the disk drive by the carrier.

77 is a flow chart diagram for explaining the operation of detecting the protrusion of the hand to the disk shelf side and the disk drive side and pulling the hand toward the carrier side when the power is turned on. FIG.

FIG. 78 is a flow chart diagram illustrating an operation of detecting an error of a carrier sensor.

[Explanation of symbols]

3 disk (recording medium) 4 disk shelf (shelf) 5 recording and / or reproducing section 6 disk drive (drive) 8 hand 9 carrier 10 moving path 13 carrier moving mechanism 14 hand moving mechanism 48 motor of carrier moving mechanism 180 encoder 187 initial Sensor (light reflection type sensor) 191 Counter 195 CPU (control circuit) 196 Memory circuit 201 Reflector (detected part) 206 Stopper 207 Reference reflector (reference detected part) P ₁₀₃ , P ₁₀₄ Reference position L ₂ Actual carrier Movement distance L ₃ fixed distance

Claims (4)

[Claims] 1. A plurality of shelves for holding a recording medium, one or a plurality of upper and lower drives for recording and / or reproducing the recording medium, and moving along the shelves and drives,
A carrier for automatically exchanging the recording medium between the shelf and the drive is provided, and a plurality of detected parts arranged along the movement path of the carrier are sequentially detected by a sensor attached to the carrier. A changer configured to stop the carrier at a designated position, a stopper for setting the carrier at a reference position, and a reference target detection set at a constant distance from the reference position along a movement path of the carrier. Section, an encoder that measures the actual movement distance of the carrier until the sensor detects the reference detection section after the carrier starts moving from the reference position, and the carrier measured by the encoder Of the actual moving distance of the reference position and the reference position stored in advance and the reference detected portion. Changer the difference away Prefecture, stored as variations in the sensor, the stop position of the carrier is characterized in that a memory circuit for correcting only the difference. 2. The changer according to claim 1, wherein the sensor is a reflection type optical sensor, and the detected portion and the reference detected portion are reflection plates. 3. The changer according to claim 1, wherein a plurality of detected parts arranged along the movement path of the carrier detect the positions of the plurality of stages of drives. 4. The changer according to claim 1, 2 or 3, wherein a bare disk for recording and / or reproducing, which is a recording medium, is horizontally placed on the shelf, and the drive is the above-mentioned. It has a recording and / or reproducing unit for recording and / or reproducing a bare disc, and the carrier is provided with a hand for horizontally delivering the bare disc between the shelf and the drive. Changer.