JPH0697531B2 - Disc player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention is provided with a centering mechanism for positioning a disc at the center of the disc insertion port when the disc is inserted into the disc insertion port of a disc reproducing apparatus. Disk playback device.

[Conventional technology]

In recent years, a disc-shaped compact disc (hereinafter simply referred to as a disc) in which an analog sound is converted into a digital signal and pits corresponding to the digital signal are formed in a recording layer has been developed. This disc optically reproduces an analog sound by laser light emitted from a reading head of a CD player. In addition, this disc has achieved dramatically superior sound quality and operability compared to conventional LP records, so it has become rapidly popular with CD players. For this reason, in-vehicle CD players have also been developed.
As a player, there is a player as shown in FIG. 9, for example. In the figure, reference numeral 101 is a disc-shaped disc having a diameter of 12 cm, on which music is recorded. This disc 10
When 1 is inserted into the disc insertion slot 102, the loading mechanism
It is conveyed to a predetermined position (approximately the center position of the CD player) by 103, and is fixed on the turntable 105 by the clamper arm 104 at this predetermined position. Turntable 105
The upper disc 101 is rotated by a spindle motor (not shown), and the music recorded on the disc 101 is reproduced by a read head (not shown).

By the way, it is equivalent to a conventional single record and has a diameter of 12 cm.
A disc 106 having a diameter of 8 cm, which is much smaller than the disc 101 of the present invention, has been developed.

[Problems to be Solved by the Invention]

However, in such a conventional CD player, the disc insertion opening 102 is formed so as to fit the disc 101 having a diameter of 12 cm. Therefore, when trying to insert the small diameter disc 106 into the disc insertion opening 102, Since the disc insertion opening 102 has a wide opening, it is difficult to insert the disc into the center. Especially for in-vehicle CD players,
It is more difficult to insert the small-diameter disc 106 into the center of the disc insertion opening 102 because it vibrates while the vehicle is traveling.

Therefore, it is conceivable to dispose a centering mechanism in the vicinity of the disc insertion opening 102 so as to position the disc 106 in the center of the disc insertion opening 102 even if the disc 106 is biasedly inserted.

On the other hand, in the vicinity of the disc insertion opening 102, a double insertion prevention member 108 for rotatably arranging for preventing the insertion of a new disc when one disc is in the player,
The double insertion preventing member 108 is driven by an opening / closing mechanism 107 provided on the opposite side of the loading mechanism 103. Therefore, when the CD player is in use, the double insertion prevention member 108 is driven by the opening / closing mechanism 107 to close the disc insertion opening 102, and another disc may be mistakenly inserted into the disc insertion opening 102 by double insertion. Is being prevented.

Therefore, if the double insertion prevention member 108 and its opening / closing mechanism 107 are separately provided in the CD player together with the centering mechanism, the mechanism becomes complicated as a whole of the CD player, the cost becomes high, and the operation reliability is improved. There was a problem that it would be difficult to secure it.

In view of such a point, the present invention allows the discs 101 and 106 to be easily inserted into the center of the disc insertion opening 102 by the centering mechanism even if the vehicle-mounted disc reproducing device vibrates while the vehicle is traveling. It is an object of the present invention to provide a disc reproducing apparatus that uses a disc for preventing double insertion of a disc.

[Means for Solving the Problems]

Therefore, the present invention inserts a disc into the disc insertion opening, and when the disc reaches a predetermined position of the player, the clamper arm actuation for holding the clamper arm at the upper position via the link mechanism. In a disc reproducing device for operating a mechanism, lowering a clamper arm to fix a disc on a turntable and rotating the turntable to reproduce recording, the disc reproducing device is provided at the disc insertion opening, It has a centering mechanism for guiding the inserted disc to the center of the disc insertion opening, and this centering mechanism is swingably provided at a space at the disc insertion opening, and is provided at a space at the disc insertion opening. Two centering arms each having an abutting portion that faces the disk and abuts against the peripheral edge of the disk; The peripheral edges of the disks respectively connected to and inserted into these two centering arms simultaneously abut on the abutting portions of the two centering arms, and when they are attempted to be swung in the opening direction, their swinging movements are performed. And a centering lever that operates so as to lock the swing of the centering arm when the peripheral edge of the inserted disc abuts only on the abutting portion of one of the centering arms. A lock portion for locking the movement of at least one member of the centering arm and the centering lever is formed, and the lock portion causes the centering according to the operation of the link mechanism when the disc is inserted into a predetermined position of the player. The mechanism was configured to lock.

[Action]

For example, since the on-vehicle disc reproducing device is provided on the front panel of the vehicle, the on-vehicle disc reproducing device also vibrates while the vehicle is traveling. Therefore, in order to insert a disc into the disc insertion slot, it must be positioned and inserted in the center of this disc insertion slot, and special care must be taken when inserting a disc with a small diameter into the center of the disc insertion slot. There is. However, since the centering mechanism is provided near the disc insertion opening, the disc can be easily positioned in the center of the disc insertion opening without being biased.

On the other hand, when the disc reaches a predetermined position of the player, the peripheral edge of the disc operates the clamper arm actuating mechanism via the link mechanism. At this time, the lock portion of the link mechanism locks the movement of the centering arm or the centering lever. Therefore, when the disc is fixed to the turntable, even if another disc is mistakenly inserted into the disc insertion opening, the swing of the centering arm is locked, and the abutment portion at the tip of the centering arm causes another disc to come into contact with the other disc. Insertion is blocked.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. 1 to 8 are views showing an embodiment of a CD player according to the present invention.

First, the configuration will be described.

In FIG. 1, reference numeral 1 is a casing of a vehicle-mounted CD player to which the present invention is applied, and a disc insertion opening 2 for inserting a disc is provided on the front surface of the casing 1. The frame 3 is housed in the casing 1,
The frame 3 has a substantially flat top plate 3a and side plates 3b, 3b whose side portions are bent downward. Further, inside the frame 3, a support frame 4 as shown in FIG.
A reproducing device (not shown) for reproducing the music recorded on the disc is mounted on the support frame 4 at substantially the center thereof. The support frame 4 is a damper 5,5,5,5
It is supported by the frame 3 in a floating manner via the. Further, on the front side of the frame 3 and on the side,
A loading mechanism 6 for transporting the disc 106 inserted into the disc insertion port 2 to a predetermined position (a substantially central position of the support frame 4) and a loading arm swinging mechanism 7 for swinging the loading arm 8 up and down are provided. Has been. The loading mechanism 6 has a drive roller 9a attached to the support frame 4. The loading mechanism 6, the loading arm swinging mechanism 7, and the lock mechanism 45 described later are described in Japanese Patent Application No. 62-13
It is described in detail in No. 6632. Further, a loading motor 10 is provided on the front side of the frame 3, and when the driving roller 9a is rotated by the driving of the loading motor 10, it cooperates with a driven roller 9b arranged to face the driving roller 9a, and the The disc 106 inserted into the insertion slot 2
Is conveyed to the predetermined position.

Further, as shown in FIG. 2, a centering mechanism 12 for locating a disc 106 having a particularly small diameter at the center of the disc insertion port 2 is provided on the inner side of the frame 3 and near the disc insertion port 2. ing. The centering mechanism 12 is the third
As shown in the figure, it is composed of a pair of centering arms 13 and 14 provided in the vicinity of the disc insertion slot 2 with a space left and right, and a centering lever 15 located between the centering arms 13 and 14.

The pair of centering arms 13 and 14 are substantially L-shaped as a whole, and the compact disc 10 to be inserted into each of them.
6, the end portions 13a, 14a and the side end portions 13b, which are contact portions with the
14b, and is pivotally supported by the frame 3 via support pins 16 and 17 provided in central portions 13c and 14c between the tip portions 13a and 14a and the side end portions 13b and 14b. The tip portions 13a and 14a extend to the disc insertion opening 2, and centering pins 18 and 19 are attached to the tip portions 13a and 14a. The centering pins 18 and 19 divide the disc insertion opening 2 into approximately three equal parts. It is arranged in the central position P, P that divides. Further, the centering pins 18 and 19 may be integrally formed with the tip portions 13a and 14a,
Therefore, the centering pins 18 and 19 can also be regarded as the tip portions 13a and 14a as the contact portions. The side end portions 13b and 14b face each other and are provided with connecting pins 20 and 21, respectively. Also, one of the centering arms
An engaging piece 131 is formed on the center portion 13c of 13 and at the tip end side in the disc insertion direction.

The centering lever 15 has a substantially inverted W shape as a whole, and connecting grooves 22 and 23 are formed at both ends thereof. By connecting the connecting pins 20 and 21 to the connecting grooves 22 and 23, a pair of The centering arms 13 and 14 are connected to the left and right ends of the centering lever 15. Center part of the centering lever 15
An elongated hole 25 is formed in 15c along the disc insertion direction,
As shown in FIG. 4, the elongated hole 25 has a circular head 25a on the disk insertion port 2 side (the rear end side in the disk insertion direction). A guide pin 26 implanted in the frame 3 is loosely inserted in the long hole 25, and the guide pin 26 is relatively movable in the long hole 25. In addition, the center portion 15c of the centering lever 15
Is extended toward the tip side in the disc insertion direction,
A guide groove 125 is provided at the tip, and a guide pin 126 fixed to the frame top plate 3a is engaged with the guide groove 125. In addition, the central portion 15c is located between the pair of guide projecting surface portions 3c and 3d provided on the frame 3. Therefore, the centering lever 15 can reciprocate in the disc insertion direction.

A pair of centering arms 13 and 14 and a protrusion 3b on the frame 3;
Tension springs 27 and 28 are stretched between 3b,
The pair of centering pins 18 and 19 are brought close to each other by the biasing force of the tension springs 27 and 28. The distance between the pair of centering pins 18 and 19 when they are brought close to each other is 8 cm or less, and when a small-diameter disc 106 is inserted from the disc insertion opening 2, the discs come into contact with the centering pins 18 and 19.

Here, if a small-diameter disk is not inserted in the center of the disk insertion opening 2 but is inserted eccentrically, the disk comes into contact with either of the pair of centering pins 18 and 19.
The disc 106 has a centering pin 18 as shown in FIG.
If it comes into contact with, the centering arm 13 slightly rotates counterclockwise about the support pin 16 against the urging force of the tension spring 27. By this rotation of the centering arm 13, the centering lever 15 as a whole rotates slightly clockwise. In this way the centering lever 15
When is rotated clockwise, the guide pin 26 slightly shifts from the center of the circular head 25a of the elongated hole 25 and abuts the lower left wall of the circular head 25a as shown in FIG. Then, the guide pin 26 cannot relatively move within the elongated hole 25, that is, the centering lever 15 cannot move toward the disc insertion opening 2 side. Therefore, the centering arm 13 rotates slightly by the disk 106, but does not rotate any further. Therefore, the disc 106 that is biasedly inserted is regulated by the centering pin 18 and guided to the center of the disc insertion opening 2.

Thus, when the disc 106 is guided to the center of the disc insertion slot 2, the disc 106 simultaneously contacts the pair of centering pins 18 and 19. Then, the pair of centering arms 13 and 14 tries to rotate around the support pins 16 and 17, and at this time, the guide pin 26 causes the circular head 25a of the elongated hole 25 to move.
It does not deviate from the widthwise center of. For this reason, the guide pin 26 becomes relatively movable within the elongated hole 25, and the centering lever 15 moves toward the disc insertion opening 2 side. When the centering lever 15 moves, the centering arms 13,1
4 can be rotated further, and the disk 106 is this in-vehicle CD
It can be inserted into the player.

On the other hand, as shown in FIG. 2, a turntable 29 on which the disc 106 is placed is provided at substantially the center of the support frame 4, and this turntable 29 is driven by a spindle motor 30 provided on the lower surface side of the support frame 4. Is rotated. A small disk-shaped clamper 31 is located above the turntable 29, and the clamper 31 is provided on a triangular protruding end of a clamper arm 32 that is swingably attached to the rear portion of the support frame 4. A tension spring 33 is stretched between the clamper arm 32 and the support frame 4, and urges the clamper arm 32 toward the turntable 29.

As shown in FIGS. 5 and 6, when the disc 106 having a small diameter of 8 cm is conveyed onto the turntable, the loading arm mechanism 7 is operated to move the disc 106 to the clamper arm 32. An auxiliary operation plate 34 for operating the detection pin 41 fixed by is pivotably attached by pivot points 130a and 130b on both sides of the front end of the clamper arm 32, and is urged downward by a plate spring 140. On the lower surface side of the auxiliary operation plate 34 and in the center thereof, a disk-shaped recess 35 for a disk having a diameter of 8 cm is formed. Therefore, when the small-diameter disk 106 is conveyed toward a predetermined position, the disk 106 enters the disk recess 35. A hole 36 is formed at the rear end of the disc recess 35, and the center portion of a pressing assist mechanism 37 provided on the upper surface side of the operation assisting plate 34 faces the hole 36, and the disc recess 35 is exposed. The leading end of the inserted disk 106 comes into contact with the pressing assist mechanism 37 through the hole 36 and acts on it.

Here, when the disc 101 having a diameter of 12 cm is conveyed onto the turntable 29, the disc 101 has a large diameter, so that the disc 101 does not enter the disc recess 35 of the operation assisting plate 34, and the disc 101 is conveyed over as it is. The pressing assist mechanism 37 is placed on the turntable 29 after directly contacting the detection pin 41 with its peripheral edge without acting.

The pressing assist mechanism 37 has a pair of swing arms 38 and 39, and the base ends of the pair of swing arms 38 and 39 are pivotally mounted on the operation assisting plate 34. A tension spring 4 is provided between the pair of swing arms 38, 39.
No. 0 is stretched, and the tips 38a and 39a are matched with each other as shown in FIG. Therefore, when the tip ends 38a, 39a are pushed by the tip of the small-diameter disk 106 through the hole 36, the pair of swing arms 38, 39 swing. A projecting piece 38b is integrally formed on the swing arm 38, and a detection pin 41 is disposed at a position facing the projecting piece 38b, and the projecting piece 38b presses the detection pin 41 by swinging of the swing arm 38. To do.

As shown in FIG. 8, the detection pin 41 is attached to one end of a first link 42 pivotally provided on the rear end side of the frame 3 via a pin 142, and the other end of the first link 42 is in the disc insertion direction. The rear end side of the second link 43 slidably disposed on the pin and the pin
The two links 42 and 43 form a link mechanism. The second link 43 has long holes 52, 53, and guide pins 54, 55 fixed to the frame 3 engage with the long holes 52, 53 to guide the second link 43 along the top plate 3a. At the same time, the second link 43 is urged to the rear side of the frame 3 by the tension spring 56. Also, on the side of the disc insertion opening 2 side of the second link 43,
A lock arm 57 extends in the direction of the center of the frame 3, and the tip of this lock arm 57 has a centering arm 13
A lock claw 58 as a lock portion that extends toward and is engaged with the engagement piece 131 is formed.

When the detection pin 41 is a small-diameter disk 106, the second link 43 is slid by being pressed by each disk via the swing arm 38, and in the case of a large-diameter disk 101, the second arm 43 is slid to load the arm mechanism 7. Release the locked state (Figs. 1 and 2) so that it can descend. At this time, the lock claw 58 also swings the second link 43 and the centering arm.
It moves toward the engagement piece 131 of 13 and when the engagement piece 131 is engaged, the rotation of the centering arm 13 is locked. That is, the first link 42 and the second link 43 release the locked state of the loading arm swinging mechanism 7 as described above, and the rotation of the centering arm 13 and the centering lever 15 via the locking claw 58 and the like. The rotation of the centering arm 14 is locked via. Therefore, the first
Link 42, second link 43, lock arm 57, lock claw 5
8. The engagement piece 131 constitutes the arm lock mechanism 59 as a whole.

On the other hand, as shown in FIG. 1 and FIG.
A lock pin 44 is planted at the side end of the frame 3 and projects to the side of the frame 3. A lock mechanism 45 is provided on the frame 3 from which the lock pin 44 projects, and the lock pin 45 is locked by the lock mechanism 45 until the inserted disc is transported to a predetermined position, and the support frame 4 is fixed to the frame 3. ing. When the loading arm 8 is moved downward by the operation of the loading arm swing mechanism 7, the lock mechanism 45 releases the lock state of the lock pin 44, and the support frame 4 is supported by the frame 3 via the damper 5 as a buffer. To be done.

Next, the operation will be described.

The centering mechanism 12 of the present invention is effective when both large-diameter and small-diameter disks 101 and 106 are used. First, the small-diameter disk 106 will be described as an example.

When the small-diameter disc 106 is inserted into the disc insertion opening 2, the sensor 47 provided on the front portion of the top plate 3a is activated by the disc 106.
The insertion motor is detected and the loading motor 10 is driven (FIG. 1). Here, when the small-diameter disc 106 is inserted, if it is inserted not in the center of the disc insertion opening 2 but in the center, the pair of centering pins 1 of the centering mechanism 12 are inserted.
Abut on either 8 or 19. When the disc 106 contacts one of the pair of centering pins 18 and 19, the centering mechanism 12 guides the disc 106 to the center of the disc insertion opening 2 as described above.

Then, the driving roller 9a is rotated by the driving of the loading motor 10, and the inserted disk 106 is conveyed toward the turntable 29 in cooperation with the driven roller 9b. At this time, the centering arms 13 and 14 are in the initial positions of the centering pins 18 and 19 due to the urging force of the tension springs 27 and 28, and are in the central position that divides the opening of the disc insertion opening 2 into three equal parts. When the disc 106 is transported to the vicinity of the center of the turntable 29, the disc 106 has a diameter of 8 cm.
Therefore, it enters the disk recess 35 of the operation assisting plate 34. When the disk 106 enters the disk recess 35, the tip of the disk 106 presses the detection pin 41 via the pressing assist mechanism 37 facing the hole 36, as shown in FIG. That is, as described above, the disc 106 is the swing arm 38.
Is swung, and the protruding piece 38b presses the detection pin 41.

When the detection pin 41 is pressed, the first link 42 of the link mechanism swings around the pin 142 as shown in FIG.
The second link 43 is slid to operate the loading arm swinging mechanism 7. As shown in FIG. 2, the clamper arm 32
The side protruding piece 32a is held at the upper position by the pin 150 fixed to the loading arm 8, the pin 150 is released by the sliding of the second link 43, and the loading arm swinging mechanism 7 moves together with the loading arm 8. To descend. At this time, the clamper arm 32 is a tension spring.
The disc 106 placed on the turntable 29, which is lowered by the urging force of the disc 33, is pressed and fixed by the clamper 31.
That is, the loading arm swinging mechanism 7 also serves as a clamper arm operating mechanism for holding the clamper arm 32 at the upper position. In this way, the disk 106 is fixed by the clamper 31, and the loading arm mechanism 7
The lock mechanism 45 releases the lock state of the lock pin 44 in synchronism with the operation of, and the support frame 4 is bufferedly supported by the frame 3 via the damper 5 and becomes a floating state. In this way, the preparation for the reproducing operation is completed, and the spindle motor 30 is driven to rotate the disk 106 via the turntable 29. When the disc 106 is rotated, laser light is emitted from a read head (not shown), and the read head moves in the radial direction of the disc 106 to reproduce the music recorded on the disc 106.

In general, the disk 106 is fixed to the turntable 29 and rotated by the spindle motor 30, so that the disk 10 is rotated.
Another disc is not inserted into the disc insertion slot 2 while the music recorded in 6 is being reproduced. However, if you stop playing the music temporarily and leave the disc 106 fixed to the turntable 29, you forget that the disc 106 of the turntable 29 is placed and fixed. There are often times. Therefore, if another disc is doubly inserted into the disc insertion slot 2 while the disc 106 is fixed to the turntable 29, both the disc and the CD player will be damaged.

Therefore, as shown in FIG. 8, the centering mechanism 12 prevents double insertion of the disc. That is, the disc 106 inserted into the disc insertion opening 2 is conveyed to the turntable 29 after being positioned at the center by the centering mechanism 12, but the centering arms 13 and 14 of the centering mechanism 12 have tension springs 27 and 27. After passing the disc, it is rotated by the urging force of 28 and returns to the initial position.

Further, when the disc 106 is transported and placed and fixed on the turntable 29, the disc 106 presses the detection pin 41 as described above, and the second link 43 slides toward the disc insertion opening 2 direction. To do. When the second link 43 is slid, the lock claw 58 approaches the engagement piece 131 of the centering arm 13 via the lock arm 57 and engages with the engagement piece 131. When the locking claw 58 engages with the engaging piece 131, the rotation of the centering arm 13 is locked, and the rotation of the centering arm 14 is also locked via the centering lever 15.

Therefore, when the disc 106 is fixed to the turntable 29, even if another disc is mistakenly inserted into the disc insertion slot 2, the centering pins 18 and 19 serve as a double insertion preventing member in the related art. The centering pins 18 and 19 prevent the insertion of another disc. In this way, if another disc is prevented from being accidentally double inserted, it is possible to prevent both the disc and the CD player from being damaged.

Further, since the centering mechanism 59 and the conventionally existing first link 42 and second link 43 are used to serve as the conventional double insertion preventing member and the drive mechanism, the conventional double insertion is prevented. The prevention member and its drive mechanism are unnecessary. As described above, since the double insertion preventing member and its driving mechanism are unnecessary, the cost of the CD player as a whole can be reduced. In addition, a centering mechanism that replaces these 12
Since the first link 42 and the second link 43 have the above-mentioned function in addition to the original function, the mechanism of this CD player becomes simple and simple, and the operation reliability can be secured.

When the disc 106 fixed to the turntable 29 is ejected from the disc insertion opening 2, the disc 106 releases the detection pin 41, so that the second link 43 moves in the disc insertion direction by the urging force of the tension spring 56. Rock. When the second link 43 swings in the disc insertion direction, the lock claw 58 is disengaged from the engagement piece 131, and the centering arms 13 and 14 are rotatable. Therefore, the disc 106
Is conveyed to the disc insertion slot 2 by the drive roller 9a and the driven roller 9b, and the centering pins 18 and 19 are pushed out and ejected. In addition, these series of operations are performed on the large-diameter disc 10
The same applies to the case of 1. Further, even if the movement of the centering lever 15 is locked by the lock claw 58, the function of the lock mechanism can be achieved.

〔The invention's effect〕

As described above, according to the present invention, since the centering mechanism for locating the disc in the center of the disc insertion port is arranged, even if the disc is inserted in the disc insertion port in a biased manner, the disc is regulated by the centering pin. Guided in the center of the insertion slot. Therefore, the disc is securely placed and fixed on the turntable, and the music can be reproduced by the read head.

The pair of centering arms are rotatably supported by the disc insertion opening and have a contact portion that abuts the inserted disc, and the centering arms are connected to each other so that the pair of centering arms rotate substantially simultaneously. A centering mechanism including a centering lever that reciprocates when moved is provided, and a lock function that locks the rotation of at least one member of the pair of centering arms and the centering lever operates by detecting the insertion of the disc into a predetermined position. Since it was arranged in connection with the link mechanism,
If another disk is mistakenly double inserted into the disk insertion slot, the centering pin prevents the insertion of another disk. In this way, if another disc is prevented from being accidentally double inserted, it is possible to prevent both the disc and the disc reproducing device from being damaged.

Therefore, the conventional double insertion prevention member and its drive mechanism are not required, so that the cost of the disc reproducing apparatus as a whole can be reduced. In addition, the centering mechanism and the link mechanism that replace them have the function of preventing double insertion in addition to the original function, so that the mechanism of this disc player is simple and simple, and the reliability of operation is ensured. You can

[Brief description of drawings]

1 is a perspective view of a CD player according to the present invention, FIG. 2 is a perspective view of a support frame provided with a centering mechanism, FIG. 3 is a plan view of the centering mechanism, and FIG. 4 is A in FIG. FIG. 5 is an enlarged view of a portion, FIG. 5 is a perspective view of the operation assisting plate and the pressing assist mechanism, FIG. 6 is a cross-sectional view of the operation assisting plate and the pressing assist mechanism, and FIG. 7 is an enlarged view of part B in FIG. FIG. 8 is a plan view showing the centering mechanism and the lock mechanism, and FIG. 9 is a perspective view of a conventional vehicle-mounted CD player. 2 …… Disk insertion slot, 12 …… Centering mechanism, 13,1
4 …… Centering arm, 15 …… Centering lever, 18,19 …… Centering pin, 25 …… Long hole, 26 ……
Guide pin, 29 …… turntable, 32 …… clamper arm, 59 …… lock mechanism, 106 …… disc (compact disc).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshinori Yamada, No. 25 Nishimachi, Yamada, Kawagoe, Saitama Prefecture, Saitama Prefecture 1 Kawaguchi plant, Pioneer Co., Ltd. (72) Masanori Sugihara, No. 25, Nishimachi, Yamada, Kawagoe, Saitama Prefecture Pioneer Corporation Kawagoe Factory

Claims (1)

[Claims] 1. A clamper arm actuating mechanism for holding a clamper arm at an upper position through a link mechanism when the disc is inserted into a disc insertion slot and the disc reaches a predetermined position of a player. , A clamper arm is lowered to fix the compact disc on the turntable, and the turntable is rotated to reproduce the recording.
The disc reproducing device has a centering mechanism which is provided at the disc insertion opening and guides the inserted disc to the center of the disc insertion opening. The centering mechanism is swingable at intervals in the disc insertion opening. Two centering arms each provided with an abutting portion facing the disc insertion opening and abutting against the peripheral edge of the disc, and the peripheral edges of the discs respectively inserted and inserted into the two centering arms are provided. Abut on the abutting portions of the two centering arms at the same time,
When they try to rock in the direction of opening each other, they are allowed to rock, and when the peripheral edge of the inserted disk contacts only the contact part of one centering arm, the rocking of that centering arm And a centering lever that operates so as to lock the disk, and the link mechanism forms a lock part for locking the movement of at least one of the centering arm and the centering lever. A disk reproducing device characterized in that the centering mechanism is locked according to the operation of the link mechanism when it is inserted into a predetermined position.