JPH0785329B2 - Multi-type CD player - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a multi-type CD player capable of continuously playing a plurality of compact discs (CDs) housed in a magazine.

(Prior Art) In general, CD players have been densified with high density due to the multi-functionality and the increase in the number of sources. In addition, the mechanism is being simplified while satisfying high functions and multiple functions.

A CD player satisfying the high function and the multi function is, for example, a home multi-CD player capable of continuously playing a plurality of CDs housed in a magazine.

On the other hand, in recent years, in-vehicle multi-type CD players, which can continuously play a plurality of CDs, are becoming popular, and the basic structure is almost the same as the home multi-CD player. There is.

However, in the case of an in-vehicle multi-type CD player, due to the special condition of being used in an automobile, it is necessary to particularly consider the installation space, humidity, vibration, dust and operability. Furthermore, due to the space of the installation space, it becomes necessary to change the installation form to horizontal installation or vertical installation depending on the situation.

The basic mechanism of a car-mounted multi-type CD player is to move the holder holding the magazine up and down,
Mechanism for selecting a CD in the magazine, mechanism for moving the tray holding the selected CD from the magazine to the playback position side, and clamping the CD on the turntable, reading information in the CD clamped on the turntable There are a reproducing mechanism such as a pickup and a driving unit that gives a driving force to each mechanism.

In the multi-type CD player with such a configuration, when the magazine is mounted on the player body, the tray holding the selected CD is pulled out to a predetermined position on the playback unit side, and the CD is clamped on the turntable at that position. Then, the performance starts.

FIG. 7 shows the operation for returning the CD to a predetermined position on the tray when the clamp is released.

As shown in the figure, at the time of clamping, the clamp arm 1
Rotates in the direction of arrow A, and the clamper 2 attached to the end thereof passes through the clamper insertion hole 4 of the tray 3 and comes into contact with the central portion of the CD 5. At this time, the horseshoe-shaped disc retainer 8 retracted to the position of the turntable 7 attached to the rotary shaft of the motor 6 descends to a position close to the center of the CD 5. Next, when the clamper 2 moves to the turntable 7 while being in contact with the center of the CD 5, the center of the CD 5 is
It is clamped between the clamper 2 and the turntable 7. During this time, the disc retainer 8 maintains a distance from the CD 5 and returns to the position of the turntable 7 in synchronization with the operation of the clamper 2. When the motor 6 is driven in this state, the performance is started.

On the other hand, when the clamp is released, the driving of the motor 6 is stopped and the clamp arm 1 starts to rotate in the arrow B direction.

Due to the rotation, the clamper 2 descends while supporting the central portion of the CD 5, and returns the CD 5 to the predetermined position of the tray 3. During this, the disc retainer 8 keeps a distance from the CD 5 and synchronizes with the operation of the clamper 2. Then, after descending to the vicinity of the tray 3, it is retreated to the position of the turntable 7.

After that, the tray 3 holding the CD 5 is rotated in the direction of the arrow and returned to the magazine (not shown).

(Problems to be Solved by the Invention) However, in the above-mentioned conventional multi-type CD player, as shown in FIG. 7, when the CD 5 is returned to the predetermined position of the tray 3 when the clamp is released, the vibration of the vehicle vibrates. The edge of the CD 5 may get on the tray 3 due to external force such as.

In such a state, when the tray 3 is rotated in the direction of the arrow and returned to the inside of the magazine (not shown), the edge of the CD 5 may be caught by other mechanical parts or the like and protrude from the tray 3. In this way, when the CD 5 is pushed out of the tray 3, there arises a problem that the tray storing operation in the magazine (not shown) is stopped or the recording surface of the CD 5 is damaged.

The present invention has been made in response to such a situation,
An object of the present invention is to provide a multi-type CD player that can surely perform a tray storing operation in a magazine when the clamp is released.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the multi-type CD player of the present invention is configured such that a clamper provided at a position facing a turntable is brought into contact with and separated from the turntable, and the tray is attached to the tray. A CD that moves between the turntable and the tray in close proximity to the CD during clamping or unclamping, in synchronization with the contacting / separating operation of the clamper that clamps or unclamps the held CD and the clamper. In a multi-type CD player equipped with play prevention means,
Tray standby control means for shifting the center position of the tray during clamping from the center position of the clamped CD and the operation of the CD play preventing means are synchronized with the movement of the clamper to the tray side when the clamp is released. After moving it to the vicinity of the tray, it is temporarily stopped at this position, and immediately after the tray starts rotating to the magazine side, it is moved slightly to the tray side from the temporary stop position to move the CD of the tray. Control to push it into place
CD play prevention control means is provided.

(Operation) In the multi-type CD player of the present invention, when the clamp is released, the end of the CD is returned to the tray with the end of the CD mounted on the edge of the tray, and then the CD rattling prevention means moves the tray to the magazine side. Immediately after the start of rotation, the CD moved to the tray side slightly from the stopped position and the CD returned to the tray is pushed into the predetermined position, so that the CD should be securely returned to the tray. You can

(Example) Hereinafter, an example of the present invention will be specifically described with reference to the drawings.

1 and 2 show an embodiment in which the multi-type CD player of the present invention is applied to a vehicle-mounted multi-type CD player (hereinafter, simply referred to as a CD player). The CD player shown in these figures is housed, for example, in the trunk at the rear of the vehicle, and is operated by the control device provided in the driver's cab.

As shown in these figures, the CD player has a magazine 10
A magazine loading mechanism 200 in which 0 is loaded, a pushing mechanism 300 that selects a predetermined CD tray from the magazine 100 and pushes it to the turntable side, a clamp mechanism 400 that clamps a CD from the pushed CD tray to the turntable, and a clamping mechanism. A reproduction mechanism 500 for reading the information recorded on the recorded CD and a power transmission system 600 for interlocking the movement between these mechanisms are provided. Further, each mechanism is attached to a predetermined position of the support frame 700, and the support frame 700 is floatingly supported by an outer casing (not shown) via a damper 701 and a vibration-proof spring (not shown).

The magazine 100 stores trays 101 in multiple stages.
Push-out windows 102 are formed on the side surface of the magazine 100 according to the number of trays 101 accommodated therein. Then, by pushing the push-out lever 301 of the push-out mechanism 300 into any of the push-out windows 102, the selected tray 101 is swung in the direction of the arrow around the rotation center 103. A concave portion 104 is formed in the vicinity of the push-out window 102, and the engaging portion 201 of the magazine loading mechanism 200 is engaged with the concave portion 104 to load the magazine 100 at a predetermined position of the magazine loading mechanism 200. Also, on the bottom surface of the magazine 100, the magazine loading mechanism 2
A guide groove 105 is formed so that the magazine 100 can be held in the correct loading posture when the magazine 100 is loaded. The reference numeral 106 is
The drawing shows the drawer protrusions provided on the tray 101.
Can be withdrawn.

Spring hooks 704 that support one end of the vibration-proof spring 702 are provided on the side plate 703 of the support frame 700 in a state of being inclined by approximately 45 ° with respect to the horizontal direction.

The side plate 703 of the support frame 700 is formed with a vertically long groove 705 and a hook 707, and a spring 706 prevents vibration of a magazine holder 216 described later in the directions of arrows a and b. Also, slide plates 220 and 221 are attached to the inside of the side plate 703 of the support frame 700 so as to be movable in the directions of arrows a and b.
When the 00 is attached or detached, the seesaw lever S acts so as to move in directions opposite to each other.

Each slide plate 220, 221 has a guide groove 211 engaged with a pin 714 projecting inside the side surface of the support frame 700 and serving as a guide for the slide plate 220, 221 and a magazine holder 2 described later.
A stairway groove 212 for raising and lowering 16 is formed.

Each staircase groove 212 is provided with a stepped portion 213 corresponding to the number of trays holding the CDs stored in the magazine 100.
In this example, a magazine M containing 6 CD storage trays
The six stepped portions are provided in correspondence with. Each stairway 21
2 is provided in a state in which one slides up and the other slides down because the slide plates 220 and 221 move in opposite directions. Reference numeral 234 indicates a protruding piece that presses the lever 717 of the detection switch 716 that detects the uppermost position of the magazine holder 216 in the direction of arrow b.

On one slide plate 220, a position detection plate 230 having a slit 231 corresponding to the take-out position of the tray holding the selected CD is provided in a protruding manner. Then, the position detection plate 230
The position of the tray is detected by the change in the photo output due to the passing of the photo sensor 232 through the recess 233.

Here, the detection of the take-out position by the photo sensor 232 is
20msec after the photo output changes, it is performed every 8.2msec. As a result, it is possible to avoid the disturbance of the waveform of the photo output caused by the vibration of the spring or the vibration of the mechanical parts related to the movement of the magazine holder 216, so that the detection can be reliably performed.

A gear portion 606 is formed on the slide plate 220, and the gear portion 606 meshes with a gear 607a described later. Also,
The other slide plate 221 has a protruding piece having a tapered portion 227.
226 is provided. Inside each of the slide plates 220 and 221, a magazine holder 216 having a magazine insertion opening 205 provided with a taper is arranged so as to be able to move up and down.

A resin guide 204 made of resin is attached to the inner surface of the bottom plate 235 of the magazine holder 216.

Engaging pins 215 that engage with the step grooves 212 via the protruding pieces 214 are provided on both side surfaces of the magazine holder 216. On the upper surface of the magazine holder 216, a rotating member 240 having a magazine engaging portion 256, a switch engaging portion 254, and a gear portion 246 is provided with a shaft 241.
It is attached so as to be rotatable in the directions of arrows c and d via. The rotating member 240 keeps the arrow d by the spring 242.
The rotation of the rotation member 240 in the direction of arrow d is prevented by engaging the recessed portion 244 with the projecting piece 243 projectingly provided on the upper surface of the magazine holder 216. Also,
A pressing member 245 is arranged near the rotating member 240,
This prevents upward movement.

In the vicinity of the gear portion 246 of the rotating member 240, a damper 247 for keeping the rotating speed of the rotating member 240 rotated in the direction of the arrow d by the urging force of the spring 242 constant is arranged. Damper 247
Is provided with a gear 248 that meshes with a gear (not shown) incorporated in the damper body and a small gear (not shown) attached below the gear 248. The small gear is the gear portion 2 of the rotating member 240.
It is in mesh with 46.

In the vicinity of the magazine engaging portion 256 of the rotating member 240, a rotating plate 250 urged in the direction of arrow a by a spring 252 via a shaft 251 is arranged so as to be rotatable in the directions of arrow e and f. Has been done. The rotating plate 250 is provided with a magazine attachment / detachment detection switch 253 having a lever 257 that is turned on / off by a switch engaging portion 254. Also, the rotating plate 2
A long groove 255 is formed in 50.

Below the rotating plate 250, the engaging portion 201 and the engaging shaft 261 are provided.
The magazine stopper 203 having the arrow g, h
The engaging shaft 26 is arranged so as to be rotatable in the direction.
1 is engaged with the long groove 255. The engagement shaft 261 is pushed in the direction of arrow e by the taper portion 227 of the protruding piece 226, whereby the engagement portion 201 of the magazine stopper 203 rotates in the direction of arrow g and the engagement with the magazine 100 is released. .

A pushing guide 218 for pushing the protruding tray 101 into the magazine 100 when the magazine 100 is taken out from the magazine holder 216 is provided near the magazine insertion port 205.

In the vicinity of the gear portion 606 of the slide plate 220, a small gear 607a and a gear 607b that mesh with the gear portion 606 are rotatably arranged. gear
In the vicinity of 607b, a small gear 607c and a gear 607d that mesh with the 607b.
Are arranged. A small gear 607e and a gear 607f that mesh with the gear 607d are arranged in the vicinity of the gear 607d. In the vicinity of the gear 607f, a small gear 607g and a gear 607h that mesh with the gear 607f are arranged. A drive motor 608 having a gear 609 that meshes with the gear 607h is arranged near the gear 607h.

In the vicinity of the drive motor 608, the tray 101 take-out operation and
A drive motor 601 having a worm gear 602 that gives power to a CD clamping operation or the like is arranged. Worm gear 602
A stop screw 603 for restricting this movement is arranged near the tip of the stop screw 603. By adjusting the stop screw 603, the tip of the stop screw 603 and the worm gear 602 can be adjusted.
The distance from the tip of the can be set arbitrarily.

A gear 604 meshing with the worm gear 602 and a small gear 605 that rotates in the same direction as the gear 604 are arranged near the worm gear 602. A gear 6061 that meshes with the small gear 605 is arranged near the small gear 605.
Further, in the vicinity of the gear 6061, a rotary cam 610 having a gear portion 611 meshing with the gear 6061 is rotatably arranged via a shaft 612.

The rotary cam 610 is provided with cam grooves 613, 614, 615 and a cam portion 616. A support shaft 617 is provided in these cam grooves 613, 614.
Engagement protrusions (not shown) of pivot levers 618 and 619 mounted so as to be pivotable in the directions of arrows i and j via. The cam groove 615 is engaged with an engagement protrusion (not shown) of a slide lever 620 that has an engagement pin 416 and is movably arranged in the directions of arrows a and b.

A substrate 630 attached to the shaft 612 via a screw 631 is arranged above the rotary cam 610. The board 630 has a tray for moving the selected CD storage tray to a predetermined position.
Lever 633 that informs when 101 starts and ends
A tray position detection switch 632 having a is attached. A CD position detection switch 634 having a lever 635 for notifying the position of the CD is attached near the tray position detection switch 632.

In the state before the tray 101 is taken out, the lever 633 of the tray position detection switch 632 is pressed toward the arrow k side by the tip of the rotation lever 618. On the other hand, the lever 635 of the CD position detection switch 634 is not in contact with the tip of the turning lever 619.

When the rotation cam 610 rotates clockwise from this state, first, immediately after the rotation cam 610 starts rotating, the tip of the rotation lever 618 separates from the lever 633 of the tray position detection switch 632, and immediately before the rotation cam 610 finishes rotating. Then, the tip portion again pushes the lever 633 to the arrow k side.

On the other hand, at the tip of the rotary lever 619, the rotary cam 610 is about 1/3.
When it is rotated about a degree, the lever 635 of the CD position detection switch 634 is pressed to the arrow k side, and immediately after that, it is separated from the lever 635.
Furthermore, when the rotating cam 610 rotates about 2/3, the lever 635
Is pressed again toward the arrow k, and immediately thereafter, it is separated from the lever 635.

This series of operations is performed while the rotating cam 610 makes one rotation in the clockwise direction, and the same operation is performed when it rotates counterclockwise.

Further, the slide lever 620 moves in the direction of arrow a while the rotating cam 610 makes one rotation clockwise, and returns to the direction of arrow b when the rotating cam 610 makes one rotation counterclockwise.

A rotating member 401 rotatably attached to a shaft 402 is arranged below the tip of the slide lever 620. One end of a CD pressing lever 403, which is urged toward the arrow m by a spring (not shown) and prevents the CD from rattling when the tray is loaded or unloaded, is close to the rotating member 401. CD
An L-shaped CD pressing portion 404 is provided at the other end of the pressing lever 403, and a felt 405 is attached to the pressing surface side thereof. A detection sensor P for detecting the presence or absence of the CD and the tray 101 when the tray 101 holding the CD on the turntable 501 side is delivered near the other end of the CD pressing lever 403.
Is provided. Then, the arrow n of the CD pressing lever 403
The rotating operation in the direction is performed in synchronization with the clamp operation described later.

Furthermore, in the vicinity of the slide lever 620, the slide lever 6
A clamp release lever 410 having a guide groove 414 formed such that 20 descends along the arrow a direction is attached so as to be rotatable in the arrow o and p directions via a shaft 402a. A release plate 413 having an engagement groove 412 is rotatably attached to the end of the clamp release lever 410. A guide plate 4 having a guide groove 411 formed in the vicinity of the clamp release lever 410 parallel to the moving direction of the slide lever 620.
15 are arranged.

The slide lever 620 moves in the direction of arrow a, and the engaging pin 416
When is moved by being guided by the guide groove 411 of the guide plate 415, the clamp release lever 410 rotates around the shaft 402a.

Below the rotating cam 610, a link lever 660 having an engaging projection 662 that engages with a cam groove (not shown) formed on the lower surface of the rotating cam 610 is rotatable in the directions of arrows q and r via a shaft 661. It is arranged to be. At the end of the link lever 660,
An intermediate link lever 663 is rotatably attached via a support shaft 666. An intermediate portion of a C-shaped tray pushing lever 301 is attached to an end portion of the intermediate link lever 663 via a support shaft 664.

Below the tray pushing lever 301, there is a C-shaped guide groove 3
A chassis 305 in which 03 and 304 are formed is arranged. The support shaft 664 is engaged with the guide groove 303. An engagement pin 302 attached to the end of the tray push-out lever 301 is engaged with a C-shaped guide groove 304.

When the rotating cam 610 rotates clockwise, the link lever 660
Rotates in the direction of arrow q and moves the intermediate link lever 663 to the arrow a.
Move in the direction. With this, the intermediate link lever
When the end portion of 663 is guided by the support shaft 664 that moves along the C-shaped guide groove 304, a force in the direction of arrow a is applied to the intermediate portion of the tray pushing lever 301. As a result, the engaging pin 302 at the end of the tray push-out lever 301 becomes a C-shaped guide groove.
Guided by 304, one end thereof rotates in the direction of arrow s. By rotating one end of the tray push-out lever 301 in the direction of the arrow s, the tray 101 located at the same height as the one end
Is extruded.

On the lower surface of the chassis 305, as shown in FIGS. 3A and 3B, a clamp arm 690 having a clamper 691 at one end via a holding member 692 is rotated in the contacting / separating direction with respect to the lower surface. It is mounted so that it can be freely used. One end of the clamp arm 690 holds the holding member 692 between the point contacts. Both ends of the holding member 692 are provided with slits 6 of the support member 692a.
It is inserted in 92b.

In the vicinity of the rotating cam 610, a rotating piece 420 having an engaging groove (not shown) and rotating in the vertical direction via a support shaft 421 is arranged. One end of the movable shaft 422, which is biased downward by a spring (not shown), is engaged with the engaging groove.
At the other end of the movable shaft 422, a horseshoe-shaped holding ring 423 is attached to the center of the movable shaft 422 in order to prevent looseness of the CD during clamping or unclamping. Felt is attached to the contact surface of the pressing ring 423 that contacts the CD.

Here, the operations of the pressing ring 423 and the tray pushing lever 301 are controlled by the control unit 800 shown in FIG. That is, the control unit 800 controls the clamp position and the magazine 100.
A memory that stores procedures for moving trays between and
Information is extracted from 801 and a control signal is output to the motor control circuit 601a.

A motor 502 having a turntable 501 is arranged above the pressing ring 423. A stepping motor 504 having a small pulley 503 is arranged near the motor 502. A large pulley 505 is arranged near the small pulley 503. The large pulley 505 is fixed to an end portion of a rotating shaft 507 having a screw portion 508 rotatably attached to the support plate 509. A belt 506 is provided between the small pulley 503 and the large pulley 505.
Have been passed over.

At the position sandwiching the motor 502, attach the pickup 510 to the arrow u,
A guide rail 511 for guiding in the v direction is arranged. The pickup 510 is provided with a meshing portion 512 that meshes with the screw portion 508 of the rotating shaft 507.

When the rotary shaft 507 rotates clockwise, the pickup 510 moves in the direction of arrow u, and when it rotates counterclockwise, the pickup 510 moves in the direction of arrow v.

Next, the operation of the above CD player will be described.

First of all, when mounting the magazine 100, the magazine holder 2
16 is the highest position, that is, the engagement pin 215 is engaged with the highest step 213 of the step groove 212. At this time, the protruding piece 234 of the slide plate 220 causes the lever 717 of the switch 716 to move in the direction of arrow b.
Since it is pressed in the direction, the position of the magazine holder 216 is detected.

From this state, insert magazine 100 into magazine holder 216
Insert into 205. When the magazine 100 is pushed in almost half,
The edge portion contacts the magazine engaging portion 256 of the rotating member 240. Furthermore, when the magazine 100 is pushed in, the rotating member 240
It rotates in the direction of arrow c against the biasing force of 242. At this time, the side surface of the magazine stopper 203 and the side surface of the magazine 100 come into contact with each other, and the magazine stopper 203 slightly rotates in the direction of arrow g. Along with this rotation, the rotation plate 250 slightly rotates in the direction of arrow e against the biasing force of the spring 252.

Then, immediately before the magazine 100 is completely pushed into the magazine holder 216, the engaging portion 2 of the magazine stopper 203 is pressed.
01 is the engaging recess 104 of the magazine 100 due to the urging force of the spring 252.
To complete the mounting of the magazine 100.
When the mounting is completed, the switch engaging portion 2 of the rotating member 240 is
Since the lever 54 rotates the lever 257 of the magazine mounting detection switch 253, its completion is detected.

Then, when the controller (not shown) installed in the driver's cab instructs CD selection, the drive motor
The 608 drives. This driving force is transmitted to the small gear 607a via the gears 609 to 607b, and the gear portion 606 that meshes with the small gear 607a.
The slide plate 220 moves in the direction of arrow a via. Further, this moving force is transmitted to the other slide plate 221 via the seesaw lever S, and the slide plate 221 moves in the direction of arrow b. At this time, the protruding piece 234 of the slide plate 220 is the switch.
Since it is separated from the lever 717 of 716, it is detected that the magazine holder 216 has moved from the uppermost position. The magazine holder 216 is moved by the movement of the slide plates 220 and 221.
Is lowered until the selected containing tray 101 matches the predetermined take-out position. At this time, slide plate 22
The position of the tray 101 holding the selected CD can be detected by the change of the photo output by the slit 231 of the position detection plate 230 of 0.

In the present embodiment, when the magazine holder 216 is at the top, the lowest tray 101 in the magazine 100 is at the take-out position, and conversely, when the magazine holder 216 is at the bottom, the highest tray 101 in the magazine 100. Is in the eject position. Then, assuming that the selected CD is held on the uppermost tray 101 in the magazine 100, the magazine holder 216 is lowered to the lowest position.

After this state is taken, the drive motor 601 is driven, and when this drive force is transmitted to the rotary cam 610 via the gears 602 to 611, the rotary cam 610 rotates clockwise. Rotating cam 6
Immediately after the start of the rotation of 10, the tip of the rotating lever 618 separates from the lever 633 of the tray position detection switch 632.
Immediately before the end of rotation of the rotating cam 610, the rotation lever 6
The tip of 18 presses the lever 633 to the arrow k side. As a result, it is detected that the tray 101 pushed out from the magazine 100 has reached the clamp position.

On the other hand, at the tip of the rotary lever 619, the rotary cam 610 is about 1/3.
When it is rotated about a degree, the lever 635 of the CD position detection switch 634 is pressed to the arrow k side, and immediately thereafter, it is separated from the lever 635. Further, when the rotary cam 610 rotates about 2/3, the lever 635 of the CD position detection switch 634 is pressed again toward the arrow k side,
Immediately after that, it releases from the lever 635. As a result, it is detected that the tray 101 pushed out from the magazine 100 has reached the clamp position.

At this time, the link lever 660 rotates to move the intermediate link lever 663 in the arrow a direction. Along with this, when the end portion of the intermediate link lever 663 is guided by the support shaft 664 that moves along the C-shaped guide groove 303, a force in the direction of arrow a is applied to the intermediate portion of the tray pushing lever 301. As a result, the engaging pin 302 at the end of the tray push-out lever 301 is guided by the C-shaped guide groove 304, and one end thereof rotates in the direction of the arrow s to enter the push-out window 102 of the magazine 100.
Further, when one end of the tray 101 rotates in the direction of the arrow s, the tray 101 located at the same position as that of the one end is pushed out, and the pushed tray 101 rotates in the direction of the arrow with a point 103 as a fulcrum.

When the tray 101 rotated in the arrow direction reaches the clamp position, the slide lever 620 moves in the arrow a direction. When the slide lever 620 further moves in the direction of arrow a, it abuts against the rear portion of the rotating member 401 and presses the rear portion. Rotating member 4
The tip of 01 pushes down one end of the CD pressing lever 403 by the force.

Then, the CD pressing lever 403 rotates in the direction of arrow n against the biasing force of the spring.

Also, in synchronization with this operation, the slide lever 620 moves in the direction of arrow a.
When the engaging pin 416 moves in the direction and is guided by the guide groove 414 of the guide plate 415 to move, the end of the clamp release lever 410 rotates via the guide groove 414.
As a result, the clamp arm 690 is rotated by the urging force of the spring, and the clamper 691 approaches the turntable 501 side.

At this time, the clamper 691 is in contact with the central portion of the CD, and when the clamper 691 is lifted to the turntable 501 side in this state, the central portion of the CD is clamped by the clamper 691 and the turntable 501. At this time, the tray position detection switch 632
Sends a signal indicating that the tray 101 has reached the clamp position to the control unit 800. Immediately after receiving the signal, the control unit 800 drives the drive motor 601 via the motor control circuit 601a to slightly rotate the tray 101 in the arrow direction from the CD clamp position. As a result, the center position of the CD and the center position of the tray 101 at the time of clamping are displaced.

Further, at this time, the rotating piece 4 is synchronized with the operation of the clamper 691.
The tip portion of 20 gradually rotates upward, and the engagement groove thereof raises one end portion of the movable shaft 422 against the biasing force of the spring. As a result, the horseshoe-shaped holding ring 423 rises while maintaining a certain small distance from the CD.

When the clamping operation is completed, the motor 502 is driven, and the turntable 501 is rotated by this driving force to rotate the CD.

At this time, when the stepping motor 504 is driven, this driving force is applied to the small pulley 503, the belt 506, and the large pulley 505.
Is transmitted to the rotating shaft 507 via. When the rotary shaft 507 rotates, the pickup 510 moves in the arrow u direction while being guided by the guide rail 511 via the meshing portion 512 that meshes with the screw portion 508.

And C by the pickup head of pickup 510
After the information about the song in the D TOC area is read, the player moves to a predetermined song area to read the information about the song. As a result, the performance of the song is started.

Then, when the performance of the selected CD is completed, the above-mentioned motors sequentially perform reverse driving, and the CD is returned to the magazine 100 by each mechanism. Next, the next selected CD is clamped on the turntable 501 in the same manner as above, and then the performance is started. After that, when the eject button of the control device (not shown) is operated, the clamp is released.

In unclamping, first, the drive of the motor 502 is stopped, and then the drive motor 601 is driven to rotate the rotary cam 610 counterclockwise.

While the rotating cam 610 rotates counterclockwise, as shown in FIG. 5, the clamp arm 690 starts rotating in the arrow direction. By the rotation, the clamper 691 descends while supporting the central portion of the CD 107, and returns the CD 107 to the tray 101.

At this time, since the center position of the CD 107 and the center position of the tray 101 are displaced by the above-described operation, the CD 107
The end portion of the tray is in a state of riding on the edge portion of the tray 101.

During this time, the disc retainer 423 keeps a distance from the CD 107, descends to the vicinity of the tray 101 in synchronization with the operation of the clamper 691, and then temporarily stops at this position.

Next, each mechanical member operates in the reverse order to rotate the tray 101 in the arrow direction. At this time, the disc retainer 423, which is temporarily stopped at this position after descending to the vicinity of the tray 101, is temporarily stopped immediately after the tray 101 starts rotating in the arrow direction, as shown in FIG. The position of the center of the CD 107 is pushed into the predetermined position of the tray 101 by moving in the direction of the arrow slightly from the position shown in FIG. After this is completed, the disc holder 42
3 is retracted to the position of turntable 501. As a result, the CD 107 mounted on the tray 101 is reliably pushed into the predetermined position of the tray 101.

Then, the removed CD 107 is returned to the magazine 100 while being held by the tray 101. Subsequently, the drive motor 608 is driven, and the drive shaft of the drive motor 608 rotates in the opposite direction to the above.

When the reverse rotational force is transmitted to the small gear 607a via the gears 609 to 607b, the slide plate 220 moves in the arrow b direction via the gear portion 606 that meshes with the small gear 607a. This moving force is transmitted to the other slide plate 221 via the seesaw lever S, and the slide plate 221 moves in the direction of arrow a. At this time, the engagement pin 215 of the magazine holder 216 is pushed up by the step portion 213 of the step groove 212 of each slide plate 220, 221, and the engagement pin 215
When 215 reaches point E on the highest step, magazine holder 2
Position 16 is the highest.

When the slide plate 220 further moves in the direction of the arrow b from the position where the engaging pin 215 is located at the point E, the engaging pin 215 reaches the point F. At this time, the long groove 2 of the rotary plate 250
The engagement shaft 261 engaged with 55 is rotated in the direction of arrow e by the taper portion 227 of the protruding piece 226 of the other slide plate 221, so that the engagement portion 201 of the magazine stopper 203 is moved in the direction of arrow g.
Since it rotates in the direction, the engagement with the magazine 100 is released.

As a result, the rotating member 240 is rotated in the arrow b direction by the urging force of the spring 242. At this time, a constant low speed rotation is performed by the load action of the damper 247 that meshes with the screw portion 246 of the rotation member 240. Further, the magazine 100 is pushed out in the arrow a direction by the magazine engaging portion 256 of the rotating member 240.

Thus, in this embodiment, when the clamp is released,
First, the clamper descends while supporting the center of the CD,
Put the end of the to the edge of the tray and return it to the tray.
During this time, the disc retainer keeps a distance from the CD, descends to the vicinity of the tray in synchronization with the operation of the clamper, and then temporarily stops at this position. Immediately after the tray starts to rotate to the magazine side, it moves to the tray side slightly below the position where the disc retainer descending to the vicinity of the tray is temporarily stopped and the center part of the CD is moved to the predetermined position of the tray. Push it into position.

Therefore, since the CD is reliably returned to the tray, when the tray is returned to the magazine, the edge of the CD does not get caught by other mechanical parts or stick out from the tray, and the tray storage operation is performed. Is surely done.

Furthermore, since the tray storing operation is performed reliably, it is possible to prevent the recording surface of the CD from being damaged when the tray is returned to the magazine.

In the present embodiment, the case where the multi-type CD player is used in the horizontal state has been described, but the present invention is not limited to this example, and the multi-type CD player can be used in the inverted state. In other words, as described above, for the disc retainer, as described above, immediately after the tray starts rotating toward the magazine side, it moves slightly to the tray side from the position where it is stopped, and the central portion of the CD moves to the predetermined position of the tray. The operation of pushing into the position is added.

As a result, the CD is reliably returned to the tray.When the tray moves into the magazine, the CD is prevented from coming off from the tray by other play preventing members such as the pressing portion of the CD pressing lever. The tray is stored in the magazine as it is.

(Effects of the Invention) As described above, according to the multi-type CD player of the present invention, since the CD is reliably returned to the tray, the tray storing operation in the magazine at the time of unclamping is surely performed. Can be done.

[Brief description of drawings]

1 and 2 (A) and (B) are perspective views showing an embodiment of the multi-type CD player of the present invention, and FIG. 3 (a) and FIG.
(B) is a diagram showing the configuration of the clamp mechanism in FIG. 1, and FIG. 4 is a block diagram showing a control unit for controlling the movement of the CD to the tray when the clamp is released in FIG. 1, FIG. FIG. 6 is a diagram for explaining the operation of the clamp mechanism of FIG. 3, and FIG. 7 is a diagram for explaining the operation of the conventional clamp mechanism. 100 …… magazine, 101 …… tray, 107 …… CD, 200 ……
Magazine loading mechanism, 300 …… Sending mechanism, 301 …… Extrusion lever, 400 …… Clamping mechanism, 423 …… Disk holder, 50
1 …… Turntable, 502 …… Drive motor, 691 …… Clamper, 700 …… Support frame, 800 …… Control section.

Front page continuation (72) Inventor Kaoru Takemasa 25-1 Nishimachi, Yamada, Kawagoe, Saitama Prefecture Pioneer Co., Ltd. Kawagoe factory (72) Kiyoto Kajiwara 25-1 Nishimachi, Kawagoe, Saitama Prefecture Pioneer Kawagoe Factory Co., Ltd. (72) Inventor Osamu Kitazawa 25 Nishi Nishimachi, Yamada, Kawagoe City, Saitama Prefecture Pioneer Co., Ltd. Kawagoe Factory (56) Reference JP-A-2-201766 (JP, A) JP-A-64 -7364 (JP, A) JP-A-63-167470 (JP, A)

Claims (1)

[Claims] 1. A clamp means for contacting and separating a clamper provided at a position facing a turntable with respect to the turntable to clamp or release a CD held on a tray, and a contacting and separating operation of the clamper. In a multi-type CD player equipped with CD play preventing means that moves between the turntable and the tray in the state of being close to the CD when clamped or released, the center position of the tray when clamped The operation of the tray stand-by control means for making the stand-by shift from the center position of the clamped CD and the operation of the CD play preventing means are moved to the vicinity of the tray in synchronization with the movement of the clamper to the tray side when the clamp is released. After that, stop at this position, and immediately after the tray starts rotating to the magazine side, Control so that the CD is pushed into the specified position of the tray by moving it slightly to the tray side of the tray.
A multi-type CD player comprising a CD play prevention control means.