JP2000149380A - Changer type disk reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely draw out a disk by providing a high friction member at a part which is to be engaged with the periphery of the disk being on a disk holder from the intersection of a stright line connecting a point at which a driving member is abutted on the disk and the center of the disk and the disk holder toward the direction of a reproduction position and allowing the friction member to be constituted of a friction material having a coefficient of friction higher than that of an other part. SOLUTION: When a driving roller 44 and a guide wall 53 is made to be strictly symmetric with respect to a disk holder 11, in a state in which a disk 101 is held by the driving roller 44 and the guide wall 53, a holding force is not applied in the direction of the arrows D to E, However, a holding force by the driving pulley 44 is transmitted to an intersection C2 with the disk 101 by allowing the disk holder 11 to be offset in the direction of the arrow D a little in the order of 0.5 mm. An elastomer being a high friction member is provided in a range including the intersection C2. As a result, the disk 101 is revolved without slippage by being pressed against the elastomer by the driving pulley 44.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a changer type disk reproducing apparatus, and more particularly to a structure of a disk holder for holding a disk.

[0002]

2. Description of the Related Art A disk is pulled out from a plurality of disk holders that hold the peripheral edge of the disk over a required angle range, and the disk is held in a direction parallel to a recording surface of the disk as a transfer means for transferring the disk to a disk playback position. Japanese Patent Laid-Open No. 8-24 discloses a changer-type disc reproducing apparatus, one of which is a drive belt and the other is a guide wall.
No. 1552.

When a disk is pulled out, the disk housed in a disk holder is sandwiched between a drive belt and a guide wall, and the drive belt is rotated to transfer the disk toward a reproduction position.

[0004]

In order to stably hold the disk by the disk holder, it is necessary to support the peripheral edge of the disk in an angle range of 180 degrees or more. On the other hand, the transport means can reliably pull out the disk if it holds the disk stored in the disk holder at an angle of 180 degrees, but it can hold the disk at an angle of 180 degrees due to the presence of the disk holder. Can not. Therefore, since the disk is held at a shallow angle of less than 180 degrees, it is difficult to reliably pull out the disk from the disk holder.

[0005]

According to the present invention, a plurality of disk holders for holding a peripheral edge of a disk over a required angle range, and a disk held in a direction parallel to a recording surface of the disk. At least one of the plurality of disks for transferring a selected one of the plurality of disks between the disk holder and the reproduction position has at least one of a pair of transfer means including a driving member for applying a driving force to the disk, and When the stored disk is clamped, the drive member moves from the intersection C2 of a line L1 connecting the point C1 abutting on the disk to the disk center and the center O of the disk and the disk holder toward the playback position in the direction of the playback position. The high friction member is provided at the engaging portion and has a higher friction coefficient than the other portions.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of an essential part showing an initial state in which no disks are stored in a changer type disk reproducing apparatus 1 capable of storing six disks. On the back side of the apparatus, arc-shaped disk holders 11 to 16 that sandwich the disk over an angle range of about 180 degrees are arranged in a stack on the periphery of the 12-cm disk. Disk holder 1
Since the range where the disc is sandwiched by the discs 1 to 16 is only the peripheral portion of the disc, even if the disc is damaged by the disc holders 11 to 16, the influence on the information recorded on the disc is minimized. Have been. In addition, in FIG.
16, only the uppermost first disk holder 11 is shown.

The disk holder 11 has four flanges 1
9 are provided at four places, and a round hole 17 is formed in each of the flanges 19. An engagement pin 18, which will be described later, protrudes from the round hole 17.
Reference numeral 8 denotes a cam groove 33 formed in a cam member 30 for moving the disk holder 11 in a direction perpendicular to the plane of FIG. The other disk holders 12 to 16 have the same configuration as the disk holder 11, and the flange 19, the round hole 17, and the engagement pin 18 are formed similarly.

FIG. 10 is a side view of the cam member 30. One cam groove 33 is formed on the surface of the substantially cylindrical cam member 30 having the length L30. A in FIG.
Referring to FIG. 11, which is a cross-sectional view taken along line A of FIG.
A hexagonal center hole 31 is formed at the center of the center hole, and a hexagonal rotation shaft 32 rotatably supported by a base chassis 3 described later is inserted into the center hole 31. Therefore, when the rotation shaft 32 rotates, the cam member 30 also rotates in the same manner, and the cam member 30 can be translated in the axial direction of the rotation shaft 32.

The position P30 of the cam groove 33, which intersects with the section cut along the line AA, is where the disk holder corresponding to the disk is located when the disk is reproduced. The cam groove 33 does not fit with the engaging pins 18 of all the disc holders 11 to 16, but the disc holder to be reproduced is fitted into the cam groove 33 and the reproduction position P
The other disk holders are located above or below the cam member 30.

[0011] Of the disk holders located above the cam member 30, the engaging pins 18 of the disk holders adjacent to the cam member 30 are in contact with the upper surface of the cam member 30 to maintain their positions. The located disk holder is stacked on the disk holder that is in contact with the upper surface of the cam member 30. Of the disk holders located below the cam member 30, the disk holders adjacent to the base chassis 3 have four mounting portions 36 provided on the base chassis 3 so as to abut against the respective flanges 19 thereof. The disk holder mounted on the disk holder and located between the disk holder and the cam member 30 is stacked on the disk holder mounted on the mounting portion 36.

The rotating shaft 32 is provided with a spur gear 34, and the rotating direction and the rotating position of the cam member 30 are controlled by a required cam member driving mechanism 82 including a motor, a reduction gear mechanism, and the like. The four cam members 30 are connected to each other by connecting the respective spur gears 34 to each other.
0 are driven to rotate in the same direction at the same rotation angle.

FIG. 20 shows the disk holder 11 shown in FIG.
FIG. 3 is a sectional view taken along line HH of FIG. The disk holder 11 includes a base 21 and upper and lower guide plates 22 and 23 provided on the base to hold the disk. On the other hand, in a range J at the right end portion of the disk holder 11 (see FIG. 1), an elastomer 24 is provided as a high friction member at a portion of the base portion 21 that comes into contact with the peripheral edge of the disk, and a sectional view of this portion is shown in FIG. Show.

In FIG. 1, a front panel 2 of an apparatus 1 is shown.
A disk drive mechanism comprising a plurality of drive rollers and the like on the left side in FIG. 1 as disk transfer means for transferring a disk inserted from an opening (not shown) formed in the disk drive to a reproduction position or disk holders 11 to 16 Guide means 50 for holding the disk between the disk drive mechanism 40 and the disk drive mechanism 40 are disposed on the right side and the right side, respectively. The disk drive mechanism 40 has a V-shaped groove formed on its peripheral surface so as to sandwich the peripheral edge of the disk, and connects the four drive pulleys 41 to 44 arranged in the disk transport direction and connects the respective drive pulleys 41 to 44. Pulley drive mechanism 84, which is connected to gears 45 to 47 and gear 45, and includes a motor and the like for rotationally driving each of drive pulleys 41 to 44.
Consists of

On the other hand, the guide means 50 includes a pair of upper and lower guide plates 51 formed so as to sandwich the peripheral portion of the disk.
52, and a guide wall 53 disposed between the guide plates 51 and 52 and abutting the disk edge. The disk drive mechanism 40 and the guide means 50 can be moved in parallel in the directions indicated by arrows DE in FIG. 1 by a required connecting mechanism (not shown). At this time, the disk drive mechanism 40 is connected to move by the same distance in the direction of arrow D opposite thereto. Also, in order to move the disk drive mechanism 40 and the guide means 50 in the direction of the arrow DE,
A required pulley / guide drive mechanism 85 including a motor and the like is provided.

Accordingly, in a state where the disk is clamped between the drive pulley 41 and the guide wall 53 arranged closest to the front panel 2, the drive pulley 41 is driven to rotate counterclockwise by the pulley drive mechanism 84. The disk is transported while rotating clockwise in the direction of arrow F perpendicular to the direction of arrows DE, so that the disk is transported from the opening formed in the front panel 2 to the playback position or into the selected disk holder. You.

As shown in FIG. 1, the four drive pulleys 41 to 44 are arranged at a certain distance from each other in the disk transport direction. Therefore, during the transfer of the disk, when the center of the disk is located on the straight line connecting the rotation center of the drive pulleys 41 to 44 and the guide wall 53 at the shortest distance, the disk drive mechanism 40 and the guide means 50
And the driving pulleys 41-44
When the center of the disk is located on a straight line connecting the respective intermediate points and the guide wall 53 at the shortest distance, the distance between the disk drive mechanism 40 and the guide means 50 is minimized. Therefore, while the disk is being transported, the distance between the disk drive mechanism 40 and the guide means 50 constantly changes, but the displacement is such that the disk transport is not affected.

When the disk is brought to the reproducing position, projections 54 and 55 are formed at equal intervals from the position on the guide wall where the disk should be in contact with the disk. Further, at this reproduction position, the drive pulleys 43 and 44 are similarly arranged at equally spaced positions.
Therefore, the disc at the playback position has the protrusions 54, 5
5. Stably supported by the drive pulleys 43 and 44.

An actuator of a detection switch for detecting that the disk has been brought to the reproduction position is projected from the tip of the projection 54 (not shown).

The drive pulleys 41, 42 arranged on the front panel 2 side corresponding to the projections 54, 55
Are offset from the drive pulleys 43 and 44 arranged on the disk holders 11 to 16 so as to be slightly closer to the guide means 50 side.

As shown in FIG. 7, which is a front view corresponding to FIG. 1, a turntable 61 on which a disk is mounted is driven to rotate by a spindle motor 62, and is disposed on a mechanical chassis 63. This turntable 6
A clamper 71 is rotatably supported by a clamp arm 72 so as to clamp the disk between the clamper 71 and the disc 1. The clamp arm 72 is moved by a shaft 73 to a mechanical chassis 63.
, So that the clamper 71 can approach or separate from the turntable 61.

Since a bent portion 74 is formed on the clamp arm 72 as shown in FIG.
When 0 moves to a position separated from the disk, a sufficient separation distance from the clamper arm 72 is obtained.

On the mechanical chassis 63, there is arranged an optical pickup 66 which is movable between the inner circumference and the outer circumference of the disk with the rotation of a feed screw 65 which is driven to rotate by a required motor (not shown). Have been. The information recorded on the disc can be reproduced by turning the disc on the turntable 61.
This is achieved by irradiating the disk with laser light emitted from the optical pickup 66 while rotating, and reading the reflected light. At least the turntable 61 and the optical pickup 66 constitute a reproducing unit.

The optical pickup 6 is mounted on the mechanical chassis 63.
A guide rail 67 is provided so that 6 moves in parallel.
The movement of the optical pickup 66 is guided. The mechanical chassis 63 includes a mechanical chassis driving mechanism 86 including a motor and the like.
Thereby, it can be moved in parallel in the direction of arrows FG in FIG. 1 and can be moved in the direction perpendicular to the recording surface of the disk for the clamping operation. When the mechanical chassis 63 moves in the direction approaching the recording surface of the disk during the clamping operation, the clamper arm 72 is also rotated about the shaft 73 by the connecting mechanism (not shown) so that the clamper arm 72 also approaches the turntable 61.

Here, the mechanical chassis 63 is supported by the movable chassis 10 by a damper 91 as shown in FIG.
0 and the guide means 50 are movably supported in the direction D-E shown in FIG. The movable chassis 10 moves up and down as a whole with respect to the base chassis 3 in accordance with the selection of a disk. Further, as described above, the rotation shaft 32 of the cam member 30 that supports the disk holders 11 to 16 so as to be vertically movable is supported by the base chassis 3.

In the above configuration, the transfer of the disk by the disk transfer means will be described first. As shown in FIGS. 1 and 7, in the initial state in which the disc can be inserted, the first drive pulley 41 disposed closest to the front panel 2 side.
The distance between the guide means 50 and the guide wall 53 is 8 mm in diameter.
cm is set to be slightly smaller than the diameter of the disc. In this initial state, the engaging pin 18 formed on the first disk holder 11 is located at a position P30 in the cam groove 33 formed on the cam member 30 as shown in FIG. 6 disk holder 18
Are stacked on a holder mounting portion 36 provided on the movable chassis 10.

The operation when the disk 101 having a diameter of 12 cm is inserted into the apparatus 1 will be described below. When the disk 101 is inserted through an opening (not shown) formed in the front panel 2, the disk drive mechanism 40 is moved in the direction of arrow D by this insertion force, and the guide means 50 is moved in the direction of arrow E by the insertion force.
The same distance is moved in the direction, and the state shown in FIG. 2 is obtained. Thereafter, the drive pulleys 41 to 44 are respectively driven to rotate counterclockwise by the pulley drive mechanism 84, so that the disc 10 held between the drive pulley 41 and the guide wall 53 is rotated.
1 is transported in the direction of arrow F while rotating clockwise, and is loaded into the apparatus 1.

When the disk 101 is inserted, the disk drive mechanism 40 and the guide means 50 are movably supported by the movable chassis 10. Therefore, the operator can obtain a rigid insertion feeling without being affected by the damper 91.

FIG. 3 and the front view of FIG. 8 show a state in which the disk 101 has been moved to the reproduction position by the rotation of the drive pulleys 41 to 44. At this reproduction position, the disc 101 is not in contact with the disc holders 11 aligned at the same height.

Subsequently, the mechanical chassis driving mechanism 86 moves the mechanical chassis 63 in the direction perpendicular to the recording surface of the disk 101 so as to approach the disk 101, and the clamper 71 moves so as to approach the disk 101, thereby turning the turntable 61. After the disk 101 is clamped on the disk drive mechanism 40 and the guide means 50 by the pulley / guide drive mechanism 85 in the direction of arrow D,
By moving them in the respective directions, they are separated from the disk 101. Thereafter, the disk 101 is driven to rotate at a required number of rotations. This reproducing state is shown in FIG. 4 and FIG. 9 which is a front view thereof. The reproduction position is set at the same height as the transfer plane of the disk 101.

The clamp arm 72 is supported by a base chassis 63 supported on a damper 91. On the other hand, the guide means 50 is supported on the base chassis 3. Therefore, in the reproducing state shown in FIG. 9, the clamp arm 72 moves due to the vibration.
The guide means 5 is formed by the bent portion 74 formed in
The distance from 0 is sufficiently provided. Therefore, since the clamp arm 72 can approach the disk 101, it can contribute to downsizing of the apparatus in the height direction.

After the reproduction of the disc 101 is completed,
The operation of storing the disc 01 in the disc holder 11 and storing a different disc in the second disc holder 12 will be described below. After the reproduction of the disc 101 is completed, the disc 101 is moved to the drive pulleys 43 and 44 and the guide wall 53 by moving the disc drive mechanism 40 and the guide means 50 in the directions of arrows E and D by the pulley / guide drive mechanism 85, respectively. After being clamped, the mechanical drive 63 drives the mechanical chassis 63 and the clamper 71 to the disk 10.
The disk 101 is moved in a direction away from the disk 1 to release the clamped state of the disk 101.

Subsequently, the drive pulleys 41 to 44 are rotated counterclockwise by the pulley
01 in the direction of arrow F,
The range of about 180 degrees of the periphery of 01 is held by the disk holder 11. This state is shown in FIG.

Next, the mechanical chassis 63 is moved in the direction of arrow G by the mechanical chassis driving mechanism 86, and the mechanical chassis 63 is brought to a retracted position where the mechanical chassis 63 does not overlap the disk 101 held by the disk holder 11. Then, the drive pulley 44 and the guide wall 53 are separated from the periphery of the disk 101 by moving the * disk drive mechanism 40 and the guide means 50 in the directions of arrows D and E, respectively, by the pulley / guide drive mechanism 85. This state is shown in FIG.

Subsequently, the cam member 30 is rotated by the cam member driving mechanism 82 in order to select the disk holder 12.
FIG. 20 is a side view of the cam member 30 for controlling the movement of the disk holder 6 in the vertical direction of the disk holders 11 to 16, and shows a positional relationship with the disk holders 11 to 16.
Will be explained.

FIG. 12 shows a state where the first disk holder 11 is selected. In this state, the first disk holder 11 is located at the reproduction position P30 (see FIG. 10) in the cam groove 33 formed in the cam member 30. Although the second to sixth disk holders 12 to 16 are stacked on the holder mounting portion 36, only the engagement pin 18 of the second disk holder 12 is fitted at the lowermost side of the cam groove 33. I have. In this state, the cam member 30 is supported by the disk holder 12 by the cam groove 33 contacting the engagement pin 18 of the disk holder 12.

The distance L33 between the disk holders 11 and 12 is such that the mechanical chassis 63 on which the turntable 61, the optical pickup 66 and the like are mounted can be inserted when the disk 71 is reproduced as shown in FIG. The interval. The interval L32 is an interval at which the clamper 71 and the clamper arm 72 can be inserted. Also,
L31 is a disk holder 11 to 11 according to the selection of the disk.
Reference numeral 16 indicates a range in which the image moves vertically.

That is, the length L30 of the cam member 30 is substantially equal to the length required to provide the necessary distances L32 and L33 above and below the disk when reproducing the disk, and the distance L31 is equal to the length of the cam. The length is approximately equal to the sum of the length L30 of the member and the thickness of the stacked six disk holders.

The operation when the cam member 30 is rotated clockwise in order to store the second disk in the disk holder 12 will be described below. From the position shown in FIG.
When slightly rotates clockwise, the cam member 30 moves downward along with the cam groove 33 at the same time as the rotation, and assumes the position shown in FIG. When the cam member 30 further rotates clockwise from this state, the lower side of the cam member 30 contacts the engagement pin 18 of the third disk holder 13, so that the cam member 30 cannot move downward any further. It rotates while maintaining the height shown in FIG. As a result, the disk holder 12 is moved upward in the figure along the cam groove 33. On the other hand, the disk holder 11 is similarly moved upward along the cam groove 33. This moving state is shown in FIG.

FIG. 15 shows a state in which the cam member 30 is further rotated clockwise while being held by the engaging pins 18 of the disk holder 13. The cam member 30 is further moved from this position.
Is rotated clockwise, the engaging pin 18 of the disc holder 13 is inserted into the cam groove 33, so that the cam member 3
0 moves downward while rotating along the cam groove 33. On the other hand, the engaging pin 18 of the first disk holder 11 comes off the cam groove 33 and is supported by the upper surface of the cam member 30. Further, the second disk holder 12 is located at the reproduction position P30 in the cam groove 33, so that loading or reproduction of the second disk can be performed. FIG. 16 shows this state.

Accordingly, in the state of reproduction of the disk stored in the first disk holder 11 shown in FIG. 12 and the state of reproduction of the disk stored in the second disk holder 12 shown in FIG. Since the disc is moved along the rotation axis 32, the height of the disc to be reproduced is different. Along with this, the mechanical chassis 63 also moves up and down similarly, but the detailed description thereof is omitted.

When the third disk is to be stored in the third disk holder 13, the cam member 30 further rotates clockwise from the state of reproduction of the second disk shown in FIG. Of the cam groove 3
3, the cam member 30 is inserted into the cam groove 3
It moves slightly downward while rotating along 3. As a result, the lower end of the cam member 30 comes into contact with the engaging pin 18 of the fourth disk holder 14 and cannot move further downward.
The cam member 30 rotates while maintaining the height shown in FIG. As a result, the disk holder 13 is moved upward in the figure along the cam groove 33. On the other hand, the disk holder 12
Also moves upward along the cam groove 33, and the third disc holder 13 is brought to the reproduction position as shown in FIG.

Similarly, when the cam member 30 is rotated three times clockwise from the state shown in FIG. 18, as shown in FIG.
When the disc holder 16 is at the reproduction position P on the cam member 30
Moved to 30.

The operation of pulling out the disk 101 housed in the disk holder 11 is the reverse of the above-described operation of transferring the disk from the reproduction position to the disk holder 11.
That is, first, the drive pulley 4 is moved to the disk 101 stored in the disk holder 11 to transfer the disk.
4 and the guide wall 53, the disk 101 is held by the disk holder 11 over a range of about 180 degrees.
The angle range in which the drive pulley 44 and the guide wall 53 come into contact with each other is less than 180 degrees. Therefore, its holding force is 1
It is smaller than at 80 degrees.

FIG. 5 shows the disk 101 in the disk holder 1.
The operation of pulling out the disk 101 from the disk holder 1 will be described with reference to FIG. In FIG. 5, the point at which the drive pulley 44 contacts the disk 101 is denoted by C1, the center of the disk 101 is denoted by O, and the intersection of the straight line passing through the center O from C1 and the disk holder 11 is denoted by C2.

The drive roller 4 with respect to the disk holder 11
4 and the guide wall 53 are strictly symmetry, when the disk 101 is held by the drive roller 44 and the guide wall 53, this holding force is applied to the disk holder 11 in the direction of arrow DE. It does not participate at all. However, when the disk holder 11 is slightly offset by about 0.5 mm in the direction of arrow D, the holding force of the driving pulley 44 is transmitted to the intersection C2 via the disk 101.

Here, as shown in FIG. 1, an elastomer 24 which is a high friction portion is provided in a range J including the intersection C2, and the disk 101 is driven by the drive pulley 44.
Is pressed against the elastomer 24, the disk 101 can be rotated by the drive pulley 44 without slipping, and can be pulled out from the disk holder 11.

In the above-described embodiment, the position of the disk holder for holding the disk with respect to the cam groove 33 is the same when the disk is played or when the disk is loaded. Since the cam member 30 moves up and down, the height of the playback disk with respect to the movable chassis 10 differs. Therefore, the opening formed in the front panel 2 is required to have a height that at least spans the height positions of the disk holders 11 and 16 shown in FIGS. 12 and 19. With the provision, entry of dust or the like can be prevented.

The present invention is not limited to the above-described embodiment, but can take various forms. For example, in the above embodiment, the disk is transported by a plurality of drive pulleys, but the present invention is not limited to this, and other disk transport devices may be applied.

The drive pulley 44 drives the disk 1
In order to sufficiently press the rubber sheet 01 against the elastomer 24, the end of the guide wall 53 is cut out, and the drive pulley 44 and the elastomer 2 are cut off.
4 may hold the disk 101.

[0051]

As described above, according to the apparatus of the present invention, a high friction member is provided at a position opposite to a drive member which comes into contact with the peripheral edge of the disk for transferring the disk. Since the disk and the disk holder do not slip, the disk can be reliably pulled out from the disk holder.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of a disc reproducing apparatus 1 in a state where a disc can be loaded.

FIG. 2 is a plan view of a main part of the disc reproducing apparatus 1 while a disc is being loaded.

FIG. 3 is an essential part plan view of the disc reproducing apparatus 1 in a state where the disc is brought to a reproducing position.

FIG. 4 shows a disc reproducing apparatus 1 in a disc reproducing state.
FIG.

FIG. 5 is a plan view of a main part of the disc reproducing apparatus 1 in a state where the disc is brought to a storage position.

FIG. 6 shows a disc reproducing apparatus 1 in a disc selected state.
FIG.

FIG. 7 is a front view corresponding to FIG. 1;

FIG. 8 is a front view corresponding to FIG. 3;

FIG. 9 is a front view corresponding to FIG. 4;

FIG. 10 is a side view of the cam member 30.

FIG. 11 is a sectional view taken along line AA in FIG. 7;

FIG. 12 is a side view of the cam member 30 for showing a positional relationship between the disk holders 11 to 16 and the cam member.

FIG. 13 is a side view of the cam member 30 for showing a positional relationship between the disk holders 11 to 16 and the cam member.

FIG. 14 is a side view of the cam member 30 for showing a positional relationship between the disk holders 11 to 16 and the cam member.

FIG. 15 is a side view of the cam member 30 for illustrating a positional relationship between the disk holders 11 to 16 and the cam member.

FIG. 16 is a side view of the cam member 30 for showing a positional relationship between the disc holders 11 to 16 and the cam member.

FIG. 17 is a side view of the cam member 30 for showing a positional relationship between the disc holders 11 to 16 and the cam member.

FIG. 18 is a side view of the cam member 30 for showing a positional relationship between the disc holders 11 to 16 and the cam member.

FIG. 19 is a side view of the cam member 30 for showing a positional relationship between the disc holders 11 to 16 and the cam member.

FIG. 20 is a sectional view of the disk holder 11;

FIG. 21 is a sectional view of the disk holder 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc reproduction apparatus 10 Chassis 11-16 Disc holder 30 Cam member 33 Cam groove 40 Disk drive mechanism 41-44 Driving pulley 50 Guide means 60 Turntable 63 Mechanical chassis 66 Optical pickup 71 Clamper 72 Clamp arm 74 Bending part 82 Cam member drive mechanism 84 pulley drive mechanism 85 pulley / guide drive mechanism 86 mechanical chassis drive mechanism 90 damper 101 disk

Claims (1)

[Claims] A plurality of disc holders for holding a peripheral edge of the disc over a required angle range; and a plurality of disc holders for holding the disc in a direction parallel to a recording surface of the disc, wherein the plurality of disc holders are held between the disc holder and a reproduction position. A pair of transfer means, at least one of which transfers a selected one of the disks, comprising a driving member for applying a driving force to the disk; and the transfer means holds the disk housed in the disk holder. In this case, a straight line L1 connecting a point C1 of the drive member contacting the disk and the center O of the disk
And a high friction member having a higher coefficient of friction than the other portions provided at a portion of the disc holder that engages with the periphery of the disc from the intersection C2 of the disc holder and the reproduction position direction. Changer-type disc player.