JP2002117602A - Disk transport mechanism of disk player - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk transport mechanism of a thin type. SOLUTION: A roller arm 60 and an interlocking arm 61 turn in directions opposite to each other and approximately move in parallel a top surface guide plate 31 supported by the outer ends of both. When a cam surface 18b of a sliding plate 18 engages a cam follower 45a, a roller 30 which is rotated by meshing a gear 30a coupled directly to the roller with an intermediate gear 35a and a disk 11 grasped by the top surface guide plate 31 are guided up to a turntable, in parallel with table surface at a height at which the disk is clamped. The disk 11 starts the sliding rack at the front edge on the outer periphery and activates the sliding plate 18 rightward in Figure. A cam surface 18b engages a cam follower 45b, and the roller arm 60 turns the roller 30 downward and turns the interlocking arm 61 in the opposite direction to move the top surface guide plate 31, supported by pins 60a and 61a at the outer ends, upward from the guide surface. It is better if a space, where the top surface guide plate 31 does not interfere, exists above the disk 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CD, LD, DVD
More particularly, the present invention relates to a mechanism for automatically transporting an inserted disk to a turntable, aligning the center of the disk, and chucking the disk in a reproducible state.

[0002]

2. Description of the Related Art When a single disc to be played is inserted into an insertion slot, the operation from transport to a turntable to clamping is automatically performed, and after playback is completed, the disc is automatically discharged to a disc player. Basically, in the process of inserting / ejecting a disk, the clamper is located above the disk from the upper surface via a gap so as not to interfere with the disk surface, and the turntable has a central projection that engages with the disk. The disk must be located below the lower surface of the disk so as not to hinder the lower surface.

A guide for guiding the insertion and ejection of a disk and a roller for supplying power for transportation must be in close contact with the disk surface while the disk is moving, and a gap must be provided between the disk and the disk during reproduction. Further, in consideration of keeping the apparatus in a floating state in order to block external vibrations, it is necessary to secure a certain gap in the vertical direction of the disk surface.

Therefore, means for providing a gap above and below the disk have been proposed. For example, JP-A-58-456
No.59 has a fixed disk D on the turntable 21
Are disclosed. Also, Japanese Patent Application Laid-Open
JP-A-199095 discloses an embodiment in which the insertion height of the disk 12 is fixed, and when the disk 12 is inserted, the turntable 71 and the disk clamp arm 73 are turned up and down around a hinge 74 to open in a hinged manner. In addition, there are a type in which the position of the disk transport roller is fixed, and a type in which the upper surface guide plate is fixed. In any case, it is difficult to reduce the size in the thickness direction as it is.

[0005] Basically, the disk is sandwiched between a roller rotating for conveyance at the time of insertion and a flat guide surface, and is placed on the turntable at a position where the center of the disk is aligned with the rotation axis of the turntable. In a state where it is chucked and it is possible to rotate integrally with the turntable,
The roller and the disk guide surface must be separated so that a gap is formed between the disk surface and the disk so that a stable rotational operation can be obtained on the disk. For this purpose, it is absolutely necessary to secure a space in the thickness direction for the disk.

[0006]

However, for a disk player for use in a vehicle or incorporated in a computer, the disk player requires a small space and is lightweight and compact. Providing is always an issue demanded by the market. The plane dimension parallel to the disk surface cannot be reduced to the outer diameter of the disk or less, and there is a limit to the reduction in the size of the constituent material itself in order to maintain the strength of the parts and ensure the durability of the product. Eventually, the requirements in the thickness direction perpendicular to the disk surface are reduced by the configuration of the disk transport mechanism.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a disk transport mechanism which has a simple structure and has a reduced size in the thickness direction as much as possible, and which can be reliably applied to a low-cost disk player.

[0008]

In order to achieve the above object, a disk transport mechanism of a disk player according to the present invention basically includes a reference surface for setting a mounting surface of a turntable disk on a lower surface of a drive base. The distance between the turntable, the disk clamp, the transport roller, the standby position and the reproduction position of the disk guide, which is separated from and brought into contact with the disk surface conveyed at a constant height from the reference surface, and In a disk player for insertion / reproduction / discharge, the chucking operation by the turntable and the disk clamp and the operation of separating the transport roller and the disk guide from the disk surface were mechanically synchronized. The distance from the disk surface at which the disk clamp waits is configured to be within the distance from the disk surface during reproduction of the disk guide.

Here, the disk is automatically inserted into the turntable position from the insertion opening by the motor driven drive roller, and the turntable, the disk clamp, the transfer roller and the disk guide are moved in the height direction by the disk. It is performed in conjunction with the movement of the robot mechanically. Further, a cam is provided on a sliding plate which is triggered by the disk driven by the transport roller and engages with a pinion driven by a drive motor of the transport mechanism to engage and disengage with the turntable and the disk clamp. The operation and the operation of separating and moving the transport roller and the disk guide from the disk surface are mechanically controlled.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to the drawings showing an embodiment of a disk transport mechanism of a disk player according to the present invention. FIG. 1 is a schematic plan view for explaining the operation of the disk player according to the present invention, and FIG. 2 is a schematic side view showing an enlarged disk transport mechanism. FIG. 3 is a schematic diagram for explaining an operation related to a cam provided on a sliding plate. In order to avoid complicating the drawings, cross-sectional illustrations and partial omissions have been made. The position of movement of the member is indicated by a two-dot chain line as needed.

FIG. 1 shows a disk player 10 in a stand-by state by a solid line, and a disk 11 shown by a solid line is set at a position shown by a two-dot chain line. When the disk 11 is chucked at a predetermined position, a clamp arm 14 for loosely fitting the clamp ring 12 is pressed against the upper surface of the disk 11 by spring elasticity.

The clamp arm 14 urges the clamp ring 12 downward (toward the drive base 15) by a tension coil spring 16 stretched between the clamp arm 14 and the drive base 15. A portion of the clamp arm 14 is bent downward in the vicinity of the extension coil spring 16 to form a cam follower 17, and a biasing force of the extension coil spring 16 is supported by a first cam surface 18a protruding from a slide plate 18 described later. Then, the clamp ring 12 is held at the upper standby position.

The shift bar 19 is slidable vertically (in the direction of the arrow FR) in the figure using a long groove 20 provided in the clamp arm 14 as a guide, and two guide pins provided at spaced positions along the long groove 20. It moves in parallel due to the insertion of 19a.
Upright pieces 19b bent downward at right angles are formed at both ends of the shift bar 19, and come into contact with the outer peripheral front edge C of the disk 11 that has entered.

The starting arm 21 is rotatable about an implanted swivel shaft 22. The swivel shaft 22 is also provided on the clamp arm 14 in a direction perpendicular to the direction of movement of the disk 11 (in the direction of arrow B). It fits in the groove 23 and can be guided and moved in the lateral direction. A shift bar 1 is inserted into an elongated hole 21b formed in one first protruding end 21a of the starting arm 21.
The connection pin 19c erected at 9 is slidably fitted.

The starting arm 21 and the clamp arm 14
A tension coil spring 24 is stretched between them to urge the starting arm 21 clockwise in the drawing. Further, a cam follower pin 25 is implanted in the starting arm 21 substantially at an intermediate portion between the end of the elongated hole 21 b and the turning shaft 22, and comes into contact with a front edge 26 a of an inscribed cam 26 formed in the clamp arm 14. The rotation of the starting arm 21 is restricted. Further, the sliding rack 27 for interlocking the sliding plate 18 is pushed against the second protruding end 21c provided on the opposite side of the first protruding end 21a of the starting arm 21 to chuck the disc 11. A linkage 28 for initiating a king operation is formed.

The roller 30 incorporated in the transport mechanism 29
In conjunction with the upper surface guide plate 31 which guides the disk 11 in parallel with the turntable surface 36a, the disk 11 comes into contact with and separates from both surfaces of the disk 11. The roller 30 and the upper surface guide plate 31 sandwich the disk 11 at a close position, and forcibly move the disk 11 in the vertical direction (the direction of arrow FR) in the figure. Also, the upper surface guide plate 3
A circuit board 3 on which a circuit including a photo sensor 32 for detecting insertion and ejection of the disk 11 is printed
3 is provided, and when the insertion of the disk 11 is detected,
The drive motor 34 is activated, and the gear train 35 connected to the rotation shaft 31a of the roller 30 is interlocked to rotate the roller 30 in a direction in which the disk 11 is fed into the turntable 36.

Referring to FIG. 2, the upper guide plate 31 interlocked with the roller 30 will be described in detail. A roller arm 60 rotatably supporting the roller 30 at both ends supports one end located on the near side of the upper surface guide plate 31 with a pin 60a planted at the end opposite to the roller 30. The roller arm 60 is rotatable about a support shaft 60b.
One end of an interlocking arm 61 that swings about a support shaft 61a is pivotally supported by an interlocking shaft 60d implanted between c and the support shaft 60b. A pin 61 b implanted at the other end of the interlocking arm 61 supports the other end located on the back side of the upper surface guide plate 31.

The roller rotating shaft 31a is always urged by a leaf spring (not shown) so as to flexibly cope with an unexpected external force.
The roller bearing 60c is formed in a long hole. The second cam surface 18 is attached to the cross beam 31b that integrally connects the roller arm 60.
The first and second cam followers 45a and 45b respectively engaging with the two-way cams b are formed. Cam Follower 4
Either 5a, 45b is pushed up by the second cam surface 18b, and the movement of the second cam surface 18b causes the cam followers 45a, 45b to be pushed up alternately, so that the roller arm 60 is moved clockwise or counterclockwise in the figure. Rotate in the direction. The link arm 61 rotates in a direction opposite to the roller arm 60.

In the state where the cam follower 45a in FIG. 2A is pushed up by the second cam surface 18b, the roller 30 rotates upward, and the upper guide plate 31 is pulled down in cooperation with the interlocking arm 61 so that the disc is discarded. 11, the roller gear 30a meshes with the intermediate gear 35a. FIG.
In (b), the cam follower 45b is pushed up by the second cam surface 18b, and the roller 30 descends, and the upper guide plate 3
Since 1 moves upward and is separated from the surface of the disk 11, the disk 11 can rotate freely without any interference. The roller gear 30a releases the mesh with the intermediate gear 35a.

When the roller arm 60 is rotated upward, the pins 60a and 61b at the ends of the roller arm 60 and the interlocking arm 61 are moved.
The upper surface guide plate 31 is moved substantially parallel downward. When the roller arm 60 is rotated downward, the roller arm 60 and the pins 60a and 61b at the ends of the interlocking arm 61 move the upper surface guide plate 31 upward in parallel. With this operation, the disk 11 is nipped or separated by the upper surface guide plate 31 and the roller 30.

The roller gear 30a fixed to one end of the roller rotating shaft 31a meshes with the intermediate gear 35a during the upward rotation to clamp the disk 11, drives the roller 30 to rotate, and moves the disk 11. At the time of downward rotation to separate, the engagement with the intermediate gear 35a is released to stop. An output gear 35b for transmitting the power of the drive motor 34 is always in mesh with the intermediate gear 35a.

The fitting grooves 37a, 37b provided in the sliding plate 18
The sliding plate 18 is guided by
Is urged in a direction away from the drive pinion 39 by a tension coil spring 38 stretched between the slide rack 27 and the slide plate 18. The sliding plate 18 is slidable along the lower surface of the drive base 15 in the front-back direction parallel to the disk moving direction with the cut-and-raised pieces 15a, 15b, 15c, 15d of the drive base 15, (In the direction perpendicular to the plane).

A linking portion 28 provided at an end of the starting arm 21 is opposed to an end 27a behind the sliding rack 27, and the linking portion 28 is brought into contact with the end 27a of the sliding rack 27 by the turning operation of the starting arm 21. Then, the sliding rack 27 is relatively moved on the sliding plate 18 toward the near side (in the direction of the arrow R) so as to push the tooth portion 27 b to a position where it meshes with the drive pinion 39.

As shown in FIG. 4A, the sliding plate 18
The cam follower 41 projecting from the distal end of a leaf spring 42 extending laterally abuts on a bent portion 40b of a crank-shaped cam groove 40 formed in the drive base 15 to prevent movement. Therefore, the sliding rack 27 pushed by the linkage 28
Is a tension coil spring 38 stretched between the sliding plate 18
While moving relative to the sliding plate 18 against the urging force (see FIG. 4B).

In the sliding rack 27, the cam follower 41 is fitted into the concave portion 44 of the sliding plate 18 by the integrally formed operation piece 43 while the tooth portion 27b is brought close to the drive pinion 39, and at the same time, the bending portion 40b is prevented. Remove crank cam groove 4
It is caused to enter the zero guide groove 40a. While the teeth 27b of the sliding rack 27 are driven by the engagement with the drive pinion 39, the cam follower 41 maintains the engagement with the recess 44 by the restriction of the guide groove 40a. As a result, the slide rack 27 is integrally moved by the fixed stopper 27c being locked by the cam follower 41 and the relative position with respect to the slide plate 18 is fixed while the extension coil spring 38 is held in the extended state.
The sliding plate 18 operates a limit switch (not shown) at the maximum stroke position to stop the rotation of the drive pinion 39.

When the driving pinion 39 is rotated in reverse, the cam follower 41 reaches the bent portion 40b of the crank cam groove 40 in synchronism with the position where the teeth 27b of the sliding rack 27 disengage with the driving pinion 39, and is restrained. Is solved. Here, the stopper 27c of the sliding rack is a cam follower 41.
Is pushed out from the concave portion 44 to release the engagement.

The sliding rack 27 is forcibly moved in the direction away from the drive pinion 39 by the contraction force of the extension coil spring 38, that is, in the upward direction (the direction of arrow F) in the figure, and is completely separated from the drive pinion 39 in the initial state. Return to. A plurality of cams are formed on the sliding plate 18, and cam followers engaging with the respective cams are interlocked by the reciprocating operation of the sliding plate 18, and the clamp arm 14, the upper surface guide plate 31, the roller 30, the turntable The movement of 36 is controlled.

FIG. 3 schematically shows a state in which the first and second protruding cam surfaces 18a and 18b and the cam groove 18c function by the movement of the sliding plate 18, and the movement is exaggerated. The movement of the sliding plate 18 causes the clamp arm 14 to
The cam follower 17 extending downward maintains sliding contact with the first cam surface 18a protruding from the sliding plate 18, and the sliding plate 18 is moved upward (in the direction of arrow R) from the upper stage 18a1 to the lower stage 18a.
Move to a2.

At the same time, the cam follower 50e provided integrally with the lift arm 50 of the turntable 36 moves the cam groove 18c from the lower stage 18c1 to the middle stage 18c2, so that the turntable 36 rises and supports the lower surface of the disk 11. An elastic pressure is applied by a spring to the upper cam groove 18c3, and the disk 11 is chucked by the clamp ring 12 to the disk mounting surface 36a of the turntable 36 by pressing. At this time, the center hole of the disk 11 is slightly retracted by the aligning action of the tapered boss 36b of the turntable 36. On the other hand, since the shift bar 19 is restrained by the pocket 26d at the locking position 26c of the inscribed cam 26, the disk 11 has the upright piece 19b with which the outer peripheral front edge C is engaged.
And can rotate smoothly without resistance.

The sliding plate 18 is moved leftward in the figure (in the direction of arrow F).
Then, the cam follower 17 of the clamp arm 14 moves from the lower stage 18a2 to the upper stage 18a against the urging force of the extension coil spring 16.
The clamp ring 12 is pushed up to a1 and is lifted to a height that does not interfere with the disk 11, and waits. The turn table 36 has a cam follower 50e with a cam groove 18c.
The process shifts to the lower stage 18c1 to wait until the convex surface of the tapered boss 36a does not interfere with the lower surface of the disk 11 and waits.

If the disc 11 is not fed into the clamp arm 14 and the turntable 36 in the standby state, there is no transition to the reproduction state. In this standby state, the upper surface guide plate 3
1 holds the disk 11 in cooperation with the roller 30,
The first cam follower 45a is pushed up by the second cam surface 18b, the upper surface guide plate 31 is at the lowered position, and the roller 30 is rotating upward.

When the slide plate 18 is moved rightward in the drawing (in the direction of arrow R) at the start of the transition to the reproduction state by insertion of the disk 11, the second cam follower 45b provided on the cross beam 31b is moved.
Since the roller arm 60 is pushed downward by the second cam surface 18b protruding from the sliding plate 18, the upper arm guide plate 31 is moved in parallel with the interlocking arm 61 to move the upper surface guide plate 31 upward to move the disk. 11, the disk 11 can rotate freely.

The sliding plate 18 is driven by the reverse rotation of the drive motor 34.
Moves leftward in the figure (in the direction of arrow F), the first cam follower 45a is again pushed up on the second cam surface 18b, and the roller gear 30b meshes with the intermediate gear 35a by the upward rotation of the roller arm 60. While rotating in the reverse direction, the disk 11 is nipped and transported to the discharge side (the direction of arrow F).

In the disk transport mechanism of the disk player according to the present invention, the clamp ring 12, the turntable 36, and the roller 30 move toward both surfaces of the disk 11 inserted at a fixed height regulated by the upper surface guide plate 31. The height at which the clamp arm 14 in the standby state keeps the clamp ring 12 from interfering with the upper surface of the disk 11 by moving the upper surface guide plate 31 apart from and away from the disk 11 is moved upward while maintaining a gap with the upper surface of the disk 11 during reproduction. The height of the upper surface guide plate 31 is not exceeded.

The space required above the disk 11 is only the separation distance of the thin upper surface guide plate 31. When the upper surface guide plate 31 is at the lowered position, the space above the clamp ring 12 is above the upper surface guide plate 31. Fits in space. By sharing the height space necessary for movement in this way,
The dimension in the thickness direction can be reduced.

Next, the operation of the disk transport mechanism of the disk player 10 will be described. When the disk 11 is inserted from the disk insertion opening 52 of the disk player 10 in the standby state, the drive motor 34 is started by being detected by the disk detection photosensor 32, and the roller 30 starts rotating. The lower surface of the disk 11 is horizontally guided while being in sliding contact with the lower surface of the guide plate 31 by the frictional driving force with the lower surface contacting the outer peripheral surface of the roller 30, and is sent toward the turntable 36.

When the outer peripheral front edge C comes into contact with the upright piece 19 b having both ends of the shift bar 19 bent, the disk 11 fed by the roller 30 causes the shift bar 19 to move along the long groove 20 by the driving force transmitted from the roller 30. To move upward (in the direction of arrow F). With this operation, the starting arm 21 stands upright on the shift bar 19,
The rotation of the starting arm 21 around the pivot shaft 22 while sliding the inner pin of the elongated hole 21b by the connecting pin 19c fitted in the cam follower pin 25 implanted in the starting arm 21 The contact rack 26 is rotated while moving along the arcuate cam portion 26b of the contact cam 26, and the linking portion 28 is
The sliding rack 27 is relatively moved toward the near side (in the direction of arrow R) on the sliding plate 18 by contacting the rear end portion 27 a of the drive 7, and is pushed to the position where it meshes with the drive pinion 39.

When the cam follower pin 25 reaches the locking position 26c, the shift bar 19 prevents the disk 11 from moving. At this position, the urging force of the extension coil spring 24 acts on the starting arm 21 to lock the cam follower pin 25 at the retracted position of the pocket 26d, and the position of the shift bar 19 with respect to the disk 11 is determined. Clamp arm 1
By the chucking operation of No. 4, the disk 11, which has been subjected to the slope action of the tapered boss 36 b at the center of the turntable 36, moves to the alignment position, and the outer peripheral front edge C of the disk 11 is moved.
Is separated from the upright piece 19b, and is released from the contact state in the pushing operation up to that time, so that the disk 11 can rotate stably.

A driving force is transmitted to the sliding rack 27 by meshing with a driving pinion 39 by moving downward (in the direction of arrow R) in the figure, and the sliding plate 18 is operated in the same direction. The first cam surface 18a on which the cam follower 17 of the clamp arm 14 has been placed is disengaged by the movement of the sliding plate 18, and the clamp arm 14
Is lowered by the urging force of the tension coil spring 16 to press the clamp ring 12 against the upper surface of the disk. Also, the second cam surface 18
b, the first cam follower 45a of the cross beam that slides on the second cam follower 45b is separated and the second cam follower 45b is pushed up by the second cam surface 18b, and the roller arm 60 is rotated counterclockwise in the drawing to link the link arm. By rotating 61 in the reverse direction, the upper guide plate 31 supported by the outer ends of both arms is moved upward to release the disc 11 that has been clamped. further,
A cam follower 50e protruding in the horizontal direction from the lifting arm 50 supporting the turntable is pushed up by the upper step 18c3 of the crank-shaped cam groove 18c, and the turntable 36 is turned on.
Is pressed against the lower surface of the disk 11.

Next, the operation of ejecting the disk 11 whose reproduction has been completed will be described. At the end of the reproduction, the drive pinion 39 is reversed by a switch operation of an electric circuit (not shown) to move the sliding rack 27 upward (in the direction of arrow F) in the figure. Cams 18a, 18b, 18c provided on sliding plate 18
Moves in the opposite direction together with the sliding rack 27, so that the cam follower 17 of the clamp arm 14 is pushed up by the upper step 18a1 of the first cam surface 18a to return to the standby state. Also,
Second cam follower 45b on second cam surface 18b
And the first cam follower is replaced with the second cam surface 1 again.
8b.

The disk 11 is sandwiched by the roller 30 rotating in the opposite direction to the upper surface guide plate 31 which comes into contact with the upper and lower surfaces by the link function constituted by the roller arm 60 and the interlocking arm 61. The clamp arm 14 releases the chucking of the disk 11. Further, the cam follower 50e moves to the lower stage of the crank-shaped cam groove 18c by the backward movement of the sliding plate 18, so that the lifting arm 50 descends, and the turntable 3 is turned off.
6 is retracted from the lower surface of the disk 11 to the separated position to be in an initial standby state.

When the sliding rack 27 moves upward in the drawing (in the direction of arrow F), the tapered portion 27d at the rear end of the sliding rack comes into contact with the first link portion 44a of the starting arm 21, and the sliding rack 27 moves upward in the drawing. When it moves, the starting arm 21 is pushed in the center direction (the direction of arrow B) by the action of the slope of the tapered portion 27d, and the cam follower pin 25 that restrains the starting arm 21 at the locking position 26c is pushed out of the pocket 26d. The starting arm 21 rotates clockwise by the urging force of a tension coil spring 24 stretched between the starting arm 21 and the clamp arm 14,
Return to the initial standby state.

At this time, the tooth portion 27b of the sliding rack is located at the position where the engagement with the drive pinion 39 is released, and the cam follower 41 is released from engagement with the guide groove 40a of the crank-shaped cam groove 40. The stopper 27c of the rack pushes the cam follower 41 out of the concave portion 44 to release the engagement.
Therefore, the integration of the sliding plate 18 and the sliding rack 27 is eliminated, and the urging force of the extension coil spring 38 effectively acts,
The tooth portion 27b of the sliding rack 27 is returned to the initial position separated from the drive pinion 39, and enters a standby state. The completion of ejection of the disk 11 can be confirmed by the photo sensor 32.

Although the embodiment of the disk transport mechanism of the disk player according to the present invention has been described above, the present invention is not limited to the illustrated embodiment. It is anticipated that various changes in details and modifications such as reconfiguration of parts can be made without departing from essential components of the present invention.

[0045]

As is apparent from the above description, according to the disk transport mechanism of the disk player according to the present invention,
By sharing the height movement space between the disc clamp and the disc guide, the effect of reducing the thickness direction can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic plan view for explaining the operation of a disk transport mechanism of a disk player according to the present invention.

2A and 2B are schematic side views of a disk transport mechanism of a disk player according to the present invention, wherein FIG. 2A shows a disk free state during reproduction, and FIG. 2B shows a state in which a disk is nipped and transported.

FIG. 3 is a schematic diagram for explaining the operation of a cam in the disk transport mechanism of the disk player according to the present invention.

FIG. 4 is an enlarged schematic plan view for explaining the relationship between a sliding rack and a sliding plate in the disk transport mechanism of the disk player according to the present invention, wherein FIG. ) Indicates a state of moving integrally.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Disc 12 Clamp ring 14 Clamp arm 17 Cam follower 18 Sliding plate 18a First cam surface 18b Second cam surface 18c Cam groove 19 Shift bar 21 Starting arm 27 Sliding rack 29 Transport mechanism 30 Roller 31 Top guide plate 36 Turntable 39 Drive Pinion 45a First cam follower 45b Second cam follower 60 Roller arm 61 Interlocking arm

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Akira Takahashi 1-76, Kawanayama-cho, Showa-ku, Nagoya, Aichi Prefecture Inside Zero Engineering Co., Ltd. (72) Inventor Yoshikazu Omura 1-76, Kawanayama-cho, Showa-ku, Nagoya, Aichi Prefecture Address F-term in Zero Engineering Co., Ltd. (Reference) 5D038 AA03 BA04 CA21 EA01 5D046 CB03 CD03 EA14 EB01 HA06

Claims (4)

[Claims] 1. A turntable, a disc clamp, and a turntable, which are separated from and brought into contact with the disc surface conveyed at a predetermined height from the reference surface, wherein a reference surface for setting a disc installation surface of the turntable is a lower surface of the drive base. In a disc player for inserting / reproducing / discharging the disc by limiting a separation distance between a standby position and a reproduction position of the conveyance roller and the disc guide, the chucking operation by the turntable and the disc clamp, the conveyance roller and the disc guide are performed. A disc transport mechanism for a disc player, wherein a separating operation from a disc surface is mechanically synchronized. 2. The disk player according to claim 1, wherein a distance from said disk surface at which said disk clamp waits is set within a distance from said disk surface during reproduction of said disk guide. Disk transport mechanism. 3. The disk is automatically inserted into a turntable position from an insertion slot by the motor driven drive roller, and the turntable, the disk clamp, the transfer roller, and the disk guide are moved in the height direction of the disk. 2. The disc transport mechanism of a disc player according to claim 1, wherein the disc transport mechanism is mechanically linked with the movement. 4. A cam is provided on a sliding plate which is triggered by the disk driven by the transport roller and is interlocked with a pinion driven by a drive motor of the transport mechanism. 2. A disk transport mechanism for a disk player according to claim 1, wherein the engagement / disengagement operation by the control unit and the operation of separating and moving the transport roller and the disk guide from the disk surface are mechanically controlled.