JPH038167A - Disk reproducing device - Google Patents

Abstract

PURPOSE:To finely adjust the height position of a disk guide to a disk by disposing a position adjusting mechanism for making the disk guide contact with the disk or separate the disk guide from the disk on the supporting part of the disk guide. CONSTITUTION:An adjusting nut 300 is rotated against a screw part S formed on the upper end part of a guide pin 75a in the position adjusting mechanism A in order to adjust clearance. When the nut 300 is rotated so as to fall down the lower side, the disk guide 42 moves above, so that the clearance becomes larger. On the contrary, when the nut 300 is moved above with respect to the guide pin 75a, the clearance becomes smaller. And when the disk d is slightly pressed on a tray by the disk guide 42, the pressing force also is adjusted by rotating the nut 300 and adjusting the elastic force of a spring 79 engaged with the guide pin 78.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a disc playback system in which a plurality of discs are stored in a magazine, and information on the discs is played back by feeding a desired disc out of the magazine. Regarding equipment.

[Conventional technology]

Recently, a disk playback device has appeared in which a plurality of compact disks are stacked in a magazine, and a tray holding the compact disks is sent out from inside the magazine to play back the information on the compact disks.

As shown in FIG. 8.9, this disc playback device 170 has a magazine storage section 171 into which a magazine M for storing a plurality of compact discs in a stacked state is inserted. and an information reproducing section 17 for reproducing information on the compact disc d held in the tray t fed out from the magazine section.
2 is provided. The magazine N is located on the left side of the figure adjacent to the magazine storage section 171 and the information reproducing section 172.
A tray rotating member 173 is provided for rotating the tray t in the tray 1 to send the compact disc d into the information reproducing section and storing the tray t in the magazine section from there. has two arms extending perpendicularly to each other, and these arms are arranged opposite to each other on two sides that are perpendicular to each other at the corner of the magazine M. This tray rotating member 173 is rotatable by a known tray rotating groove 174 provided on the left side of the information reproducing section 172 in the figure.

The tray rotating member 173 is rotated through a range of 90 degrees, and one arm 173a of the tray rotating member 173 protrudes from an opening formed in the side surface of the magazine M, as shown in FIG. It faces the tray side t. The arm 17 is moved by moving the magazine M up and down by a mechanism not shown.
Tray t in which the desired compact disc is stored in 3a
By rotating the tray rotating member 173 counterclockwise in the figure with the side surfaces t of the magazine M
The information is rotated 90 degrees around a bin 80 provided at a corner of the information reproducing unit] 72 and delivered to a predetermined position (clamp position). When storing the tray t in the magazine section, the tray rotating member 173 is rotated clockwise,
As a result, the tray 1 is stored in the magazine section.

The tray t has a disk accommodating recess 181 in the center thereof for accommodating a disk.

After the tray t is delivered to the clamping position of the information reproducing section 172, as shown in FIG. The compact disc is held by a clamper] 92 and rotated by rotating a spindle motor 190, and the information on the disc is reproduced by pink-up (not shown). Note that an opening O is formed in the tray t, and a clamper 192 rises from below the opening 0 to clamp the tray and the upper disk in cooperation with the support wheel 191.

When the clamper 192 rises to clamp the disc between the clamper 192 and the support wheel 191, a horseshoe-shaped disc guide 150 presses the top surface of the disc and guides it to ensure clamping. ing. Pins 151, 1.51 are provided at appropriate positions on this disc guide 150,
The disk guide 150 is moved up and down via this pin 151 by a disk guide lifting mechanism (not shown).

When the tray t is delivered to its clamping position, a horseshoe-shaped disc guide 1 is inserted as shown in FIG.
50 is installed at an upper position with a clearance C from the top surface of the tray t so as not to interfere with the rotational movement of the tray. When clamping the disk d held inside the tray, the clamper 192 first moves up to bring the disk d into contact with the id 150, and in this state, the clamper 192 further rises to clamp the support wheel 191 and the disk d. A disk d is held between clampers 192. Then, after playing the information, the disc d
When returning the tray inside, the clamper]92 is lowered to release the disk d from the clamper]92. At this time, the disc guide 150 also descends, but
At this time, the disk guide 150 descends only to the position shown in FIG. Therefore, if the disc d does not fall into the four disc storage parts 181 of the tray t but comes off, there is no function to return the removed disc to the four disc storage parts 181, and the disc d does not fall into the four disc storage parts 181 of the tray t. There was an inconvenience that the tray t returned to its original position without being accommodated in the recess 18. especially,
When the disc reproducing apparatus is placed in the M position, the disc is more often not returned to the four disc storage parts 181 of the tray t when the disc is released from the clamper 192, compared to when the disc is placed horizontally. In such cases, disk d
There is a problem in that the disc d tends to be stored in the magazine section without being stored in the proper position of the tray t, and the disc d sometimes jams with the magazine.

Therefore, it is conceivable that the disc guide 150 lightly presses the disc d above the tray when clamping the discs 1 to d and unclamping them after information reproduction. In such a case, it is desirable that the disk guide 150 is urged downward via an elastic member, and in order to adjust the elastic force of the elastic member and adjust the clearance C, the disk d of the disk guide 150 is pressed downward. It is necessary to delicately adjust the height relative to the surface.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a disc playback device that can finely adjust the height position of a disc guide relative to the disc.

[Means to solve the problem]

Therefore, in the present invention, a magazine storing a plurality of discs in a stacked state is inserted into a magazine storage part, and a tray holding a desired disc is sent from inside the magazine into an information reproducing part equipped with a pickup etc. using a tray rotation mechanism. In a disc playback device that rotates the disc by clamping the disc with a support wheel of a spindle and a clamper while guiding the top surface of the disc with a disc guide, and playing back information on the disc, the support part of the disc guide is provided. A position adjustment mechanism was installed to move the disc guide toward and away from the disc.

[Effect]

A position adjustment mechanism for moving the disk guide toward and away from the disk is installed at the support portion of the disk guide for guiding the disk when the disk is clamped or unclamped. By adjusting this position adjustment mechanism, the position of the disc guide relative to the disc inserted into the information reproducing section can be finely adjusted. This adjustment allows you to finely adjust the pressing force of the disc onto the tray and the clearance between the disc and the disc guide on the tray when feeding the tray into the information playback unit and when storing the tray in the magazine after unclamping the disc. Adjustable.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, the disk reproducing apparatus of the present invention].

has a magazine storage g52 for storing magazines ~1, and an information reproducing section 3 is provided adjacent to this magazine storage section 2. A plurality of trays t are stored in the magazine M in a stacked state, and a compact disc d is stored in the center of the tray t. The information reproducing unit 3 has a spindle motor 4 in its center, and a pickup 5 is provided adjacent to the spindle motor 4. The pickup 5 is slid in the radial direction of the compact disc by a drive motor 6, and reads information. The information on the compact disc d inserted into the playback section 2 is read.

A tray rotating mechanism 10 is provided along two orthogonal sides of the information reproducing section 3, and this tray rotating mechanism 10 is provided with a large diameter cam gear 11 provided at a corner of the information reproducing section 3.
have. A gear is formed around this large-diameter cam gear 11, and a reversible drive motor 17 is connected to this gear via a gear mechanism G. The gear mechanism G has a first gear 12 that meshes with a gear formed on the outer periphery of the cam gear 11, and further meshes with a second gear 13. The second gear 13 rotates integrally with the third gear 14, and the third gear 14 meshes with a worm gear 15, which is attached to the rotating shaft of the drive motor 17. Further, the drive motor 17 is a reversible motor, and this drive motor 17 rotates the cam gear 11 clockwise and counterclockwise. A cam groove 18 is formed on the back side of the cam gear 11, and one end of an arm 19 forming one end of a link mechanism is engaged with this cam/P118 via a pin P1. This arm 19 is attached to the shaft 2 attached to the frame.
It can be rotated around 0, and there is a bottle P at the other end.
2 is provided.

One of the arms is connected to a lever 21 forming a part of a linkage mechanism via the pin P2, and the pin P2 is connected to a long groove 21 formed in the front end of the lever 21 and extending in the transverse direction.
It is engaged with a.

A pin 25 extending vertically is provided at the rear end of the lever 21, and the upper part of the pin 25 is connected to a frame 26.
The lower part of the pin 25 engages with and is guided by a long 26H provided in the tray rotation member 2 provided along the front left corner of the magazine M stored in the magazine storage section 2.
7 is engaged with the elongated hole 33. This tray rotating member 27
Arm 2 is sickle-shaped and extends along the side of magazine ~1.
7a and an arm 27b extending along the front surface of the magazine M.

The arm 27g of the tray rotating member faces a portion of the tray protruding from an opening formed at the front end of the side surface of the magazine M, and the arm 27b faces the front surface of the trays arranged in a stacked manner within the magazine M. is facing. This arm 27
A pin 31 projects downward from a, and the arm 27
A pin 32 protrudes from b, the pin 31 is engaged with an arcuate hole 29 formed in the frame 28, and the pin 32 is engaged with an arcuate hole 30. The tray rotation member 27 is rotatable over a range of 90 degrees,
This rotation range is regulated by the arcuate hole 2930, and when the tray rotation member 27 rotates counterclockwise in the figure, the tray facing the arm 27a rotates around the pivot shaft attached to the corner of the magazine M. When the tray is sent out to the clamp position of the information reproducing section 3, the tray t
is stopped, and when the tray rotating member 27 rotates clockwise in the figure, the tray sent out into the information reproducing section 3 is rotated back into the magazine M.

A specially shaped cam groove 48 is formed on the upper surface of the cam gear 11, and the lever 2 of the link mechanism is inserted into this cam groove 48.
The front end support ear 147 of the actuating arm 147 extends substantially parallel to 1.
The pin P4 attached to a is engaged (Fig. 2).

Elongated holes 49 and 50 are provided at intervals in the operating arm 147, and the upper end of the support column 51 is engaged with the elongate hole 49, and the upper end of the support column 52 is engaged with the elongated hole 50, so that the Actuation arm 1
Guides the reciprocating movement of 47. A vertical piece 53 hangs down from the rear end of the operating arm 147, and a guide pin 59 projects laterally from the vertical piece 53 (FIG. 3).

On the other hand, a guide plate 54 is provided adjacent to the vertical ear 53, and this guide plate 54 is provided with a horizontal hole 55.

A swing arm 56 is disposed adjacent to the guide plate 54, and the swing arm 56 is pivotally connected to the rear end of the guide plate 62 by a pivot pin 57. The guide plate 62 is also provided with a horizontal hole 63 parallel to the horizontal hole 55 and extending over the same length. Further, the swinging arm 56 is provided with an inclined hole 60, which passes through the horizontal hole 55°63 formed in both guide plates 54 and 60 and the inclined hole 60 of the swinging arm sandwiched between these guide plates. The five guide bins are extended. Therefore, when the actuating arm 147 moves from the state shown in FIG. 3 to the right in the figure, the five guide bins also move to the right, and the guide bins 59 move into the horizontal holes 55° 63 of both guide plates 54 and 62. guided by,
As the guide bin 59 moves, the swing arm 56 having the inclined hole 60 rotates clockwise about the pivot bin 61. That is, the left side of the swing arm 56 in the figure is lifted upward. A link 58 is attached to the front end of the swing arm 56.
are connected via a pivot pin 57, and the lower end of the link 58 is pivotally connected to a connecting plate 46b formed at the end of the clamper support plate 46.

The clamper support plate 46 has support ears 47a of the fixed plate 47,
It is swingably supported by 47a and biased upward by torsion spring 301. Support ears 46a, 46a are formed at the tip of the clamper support plate 46,
A horizontal pin 45 is rotatably held in this support ear 46a. This horizontal pin 45 communicates with support portions hanging down from both sides of the member 44. A support pin 43 is erected from the member 44, and the clamper 41 is supported at the upper end of this support pin 43.

A horseshoe-shaped disc guide 42 is provided outside the support wheel 40 rotated by the spindle motor 4, and the horseshoe-shaped disc guide 42 is moved up and down by a disc guide vertical movement mechanism U.

This disc guide vertical movement groove U has a swinging arm 171, one end of which is swingably supported via a pivot pin 73 supported by support ears 72, 72, and the other end of the swinging arm 171. As shown in FIG. 4, there is a connecting portion 171a, through which the upper end of the guide pin 75a, which is erected from the disk guide 42, extends upward. A threaded portion S forming a part of a position adjustment mechanism A that adjusts the height position of the disc guide is formed at the upper end of the guide bin 75a, and a one-week nut 300 is engaged with this threaded portion S. There is. The guide bin 75a extends vertically through an opening in a fixing member 173 that forms a support for the disc guide 42, and in addition to the guide bin 75a, the disc guide 42 includes a guide bin 75b for preventing rotation of the disc guide 42, and a guide bin 75b for preventing rotation of the disc guide 42. It is supported by a guide pin 78 for supporting a compression spring. A guide bin 78 provided between the guide bins 75a and 75b is inserted into a blind hole 77 formed in the fixing member 173.

Seven compression springs are provided between the lower surface of the fixing member 173 and both sides of the disc guide 42. The guide bin 78 is loosely fitted into the compression springs 79, and the compression springs 79 always move the disc guide 42 downward. is energized. A cam follower 74 is formed protruding from the side surface of the central portion of the swing arm 171, and this cam follower 74 comes into contact with a cam 70 formed on the upper surface periphery of the disc guide. Slanted portions 70a are mutually formed. This inclined portion 70
When the cam follower 74 engages with the raised position of a, the guide bin 75 is fixed to the fixed member 173.
The disk guide 42 is pulled upward against the disk guide 42.

Further, as shown in FIG. 7, a recessed portion 70b is provided adjacent to the inclined portion 70a, and a substantially horizontal horizontal portion 70c is formed adjacent to this recessed portion 70b.

The link mechanism operates to move the tray rotating member 27 to the first position.
When rotating 90 degrees counterclockwise from the state shown in the figure to feed one tray t in the magazine M to the clamping position of the information reproducing section, the cam follower 74 of the swinging arm 171 first runs on the horizontal portion 70c of the cam 70. However, at this time, the disk guide 42 is positioned at a position lifted above the tray t as shown at 6th am. When the tray t reaches the clamp position, the cam follower 74 falls into the recess 70b of the cam 170, and the disk guide 42 descends to a position where it lightly presses the surface of the disk d downward, as shown in FIG. 6b. Thereafter, the operating arm 147 moves from the state shown in FIG. 2 to the left side in the figure, rotates the clamper support plate 46, and raises the clamper 41 held at its tip. In conjunction with this, the cam follower 74 of the swinging arm 71 is attached to the inclined portion 70a formed on the periphery of the cam gear.
The disk guide 42 rides on the disk and moves upward while holding down the upper surface of the disk and guiding it as the clamper 41 rises. That is, the shape of the cam groove 18.48 and the cam 70 is similar to that of the tray rotating member 27 and the clamper 41.
The disk guide 42 and the disk guide 42 are formed in a relative positional relationship so as to operate at the timing described above. Note that when storing the disk in the magazine M, the cam gear 11 is reversed, the clamper 41 is first lowered, and the disk guide 42 is accordingly lowered by the expansion of the compression spring 79. At this time, the cam follower 74 of the swinging arm 171 falls into the fourth part 70b of the cam 70, so the disc guide lightly presses the disc d downward (the sixth
b), the disk d is in the disk storage recess 18 of the tray t.
The disk is guided into it even if it deviates from 1. In this way, by pressing the tray upwards on the released disc with the disc guide when releasing the disc after information reproduction, even if the disc comes off from the four disc storage parts, it can be reliably stored therein. Therefore, even when the disc is vibrating or placed vertically, the disc can be reliably stored, and even an 8cITl disc, which is stored with an adapter provided on the tray, can be reliably held on the tray. Next, the tray rotating member 27 is reversely rotated and the tray is stored in the magazine M.

As described above, the disk guide 42 moves the tray t when feeding the tray t to the clamp position as shown in FIG. 6a.
Either the disk guide 42 is positioned above the surface of the tray t by a clearance C so as not to obstruct the passage of the disk t, or this clearance C is sufficient to allow the tray t and the disk d to pass. To adjust the clearance C, the adjustment nand 300 is rotated with respect to the threaded portion S formed at the upper end portion of the guide bin 75a of the position adjustment mechanism A. That is, if the adjustment nut 300 is rotated downward in FIG. 4, the disk guide 42 will move upward, and the clearance C will become larger. On the other hand, when the adjustment nut 300 is moved upward with respect to the guide bin 75a, the clearance C becomes smaller. Further, as shown in FIG. 6b, when the disc guide 42 lightly presses the disc d upward on the tray, the pressing force can be adjusted by rotating the adjusting nut 300 on the guide bin 7.
This can be adjusted by adjusting the elastic force of the spring 79 that is engaged with the spring 8. In this way, by adjusting the position adjustment mechanism A, it is possible to adjust the pressing force of the disk guide 42 to press the disk d onto the tray and to finely adjust the height position of the disk 42 from the tray t, that is, the clearance C. . This allows the disc d to be reliably stored in the disc storage recess 81 of the tray t, especially when the disc playback device is placed vertically. The XIK adjustment is effective in placing the disk d in place.

It is preferable that the horseshoe-shaped disc guide 42 is covered with felt, which is a soft material, and its mounting position is outside the support wheel 40 and in the lead-in part of the central part where the information of the compact disc d is not recorded. It is desirable to be within area a (Fig. 5). The disc guide 42 has a horseshoe shape because the pickup is inserted through the opening thereof.

Note that the horseshoe-shaped disc guide 42 does not necessarily need to be provided within the lead-in area a, and may be located near the outer periphery thereof.

〔Effect of the invention〕

Since the present invention is configured as described above, it is possible to finely adjust the height position of the disc guide provided in the information reproducing section with respect to the tray and the surface of the disc, and it is possible to finely adjust the height position of the disc guide provided in the information reproducing section with respect to the surface of the disc. Not only can it be reliably clamped, but it can also be reliably installed in the disc storage recess of the tray.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a schematic configuration of a disc playback device of the present invention, Fig. 2 is a perspective view showing a clamper operating mechanism and a disc guide vertical movement mechanism, and Fig. 3 is a perspective view showing an operating arm and a swinging arm. Fig. 4 is a perspective view of the disc guide vertical movement mechanism and position adjustment mechanism, Fig. 5 is a plan view showing the arrangement of the disc guide with respect to the disc, Fig. 6 (a)
. (b) is an explanatory diagram of the operation of the disc guide, Fig. 7 is an explanatory diagram of the relationship between the cam surface heights of the cams formed on the cam gear, Fig. 8 is a plan view of a conventional disc playback device, and Fig. 9 is a diagram of the conventional disc FIG. 10 is a diagram illustrating the positional relationship between a conventional disk guide and a tray. 11...Cam gear, 40...Support wheel, 4
1... Clamper 42... Disc guide, 56...
... Swinging arm, 70... Cam, 71... Followed arm, 74.
...Cam follower 79...Compression spring, 17
1... Swing arm, 300... Adjustment nut, A river position adjustment mechanism.

Claims (1)

[Claims] A magazine containing a plurality of stacked discs is inserted into the magazine storage section, and a tray holding the desired disc is sent from inside the magazine into an information reproducing section equipped with a pickup etc. using a tray rotation mechanism, and a disc guide reads the disc. In a disc playback device that rotates the disc by clamping the disc with a support wheel of a spindle and a clamper while guiding the upper surface of the disc, and playing back information on the disc, a support part of the disc guide is provided with a support part for the disc. A disc playback device characterized in that a position adjustment mechanism for moving a disc guide toward and away from the disc guide is installed.