JP2001167497A - Forcible feeding mechanism for recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the operation convenience of a forcible feeding mechanism for recording medium by enabling the recording medium to be loaded or ejected when power supply is cut off. SOLUTION: Relating to a recording medium driving device 1 for loading or ejecting, toward an inserting/ejection port 2a, a recording medium 100 (200) inserted from the inserting/ejecting port 2a formed in a casing 2 by a motor- driven mechanism, the recording medium can be loaded or ejected by a manual operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the technical field of a recording medium forcibly feeding mechanism. More specifically, the present invention relates to a technical field of a recording medium forcible feeding mechanism used in a recording medium driving device that loads or ejects a recording medium by a mechanism that is operated by electric power.

[0002]

2. Description of the Related Art There is a recording medium drive, for example, a disk drive for reproducing and recording information signals on a disk-shaped recording medium.

In such a disk drive,
There is a type in which loading and ejecting of a disk-shaped recording medium is performed by a mechanism which is electrically operated.

[0004]

However, in the above-described apparatus for loading and ejecting by a mechanism operated by electric power, when the power is cut off due to some cause, for example, a power failure or running out of battery, a manual operation is performed. It is impossible to forcibly load or eject the disk-shaped recording medium by the operation.

Therefore, the disk-shaped recording medium loaded with the disk-shaped recording medium is taken out, or
In order to eject or load the disk-shaped recording medium when the operation stops during loading, it is necessary to restore the electrical connection state,
In a portable disk drive, there is a problem that the battery must be replaced, which is very troublesome and inconvenient.

[0006] Therefore, the recording medium forced feeding mechanism of the present invention overcomes the above-mentioned problems, and enables loading or ejecting of the recording medium when the power is turned off, thereby improving the usability of the recording medium forced feeding mechanism. As an issue.

[0007]

In order to solve the above-mentioned problems, the recording medium forcibly feeding mechanism of the present invention is used in a recording medium driving device for loading or ejecting a recording medium by a mechanism operated by electric power. The recording medium can be loaded or ejected by manual operation.

Therefore, in the recording medium forcible feeding mechanism of the present invention, loading or ejecting of the recording medium can be performed by manual operation when the power is turned off.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the embodiments described below, the present invention is applied to a disk reproducing apparatus for reproducing information signals recorded on an optical disk (compact disk) as a disk-shaped recording medium.

The disc reproducing apparatus 1 is provided as a recording medium driving device, and includes a required mechanism and members in an outer casing 2. The outer casing 2 has an upper half 3 and a lower half 4 vertically. (See FIGS. 1 and 2).

The upper half 3 is formed by integrally forming a top plate 5 and a peripheral wall portion 6 suspended from a peripheral edge of the top plate portion 5, and a right and left side portion of the peripheral wall portion 6 extends in the front-rear direction. 6a, 6
The other portions are formed as arc portions 6c and 6d, which are located apart from each other in the front-back direction and have an arc shape (see FIGS. 1 to 3).

The lower half 4 is formed by integrally forming a bottom surface portion 7 and a peripheral wall portion 8 erected from the periphery of the bottom surface portion 7, and a right and left side portion of the peripheral wall portion 8 extends in the front-rear direction, 8
b, and the other portions are formed as arc portions 8c and 8d which are located apart from each other in front and rear and form an arc shape (see FIGS. 1 to 3).

The peripheral wall portion 6 of the upper half 3 and the peripheral wall portion 8 of the lower half 4 are abutted and connected to each other, thereby forming an arrangement space 9 for disposing each mechanism and each member inside the outer casing 2. (See FIG. 3).

An opening 2a for inserting or ejecting a compact disc (CD) 100 or CD 200 is formed in the front surface of the outer casing 2 (see FIGS. 1 and 2).
The CD 100 is a large-diameter disc having a diameter of about 12 cm, and the CD 200 is a small-diameter disc having a diameter of about 8 cm. Then, the outer casing 2 is attached to the front end of the top plate 5 of the outer casing 2.
A window 2b that allows the inside to be visually recognized is formed (see FIGS. 1 and 2).

A slider 10 functioning as a position control means is supported on the top plate 5 of the upper half 3 so as to be slidable in the front-rear direction. The slider 10 has bases 11 and 11, a bridging part 12, an arc part 13, The side portions 14, 14 are integrally formed of a magnetic metal material (FIGS. 3 to 5).
reference).

The bases 11, 11 are spaced apart from each other in the left and right directions and have a vertically elongated substantially rectangular shape, and are supported holes 11a, 11a, 11a, 1
1a is formed. An operating protrusion 11b is formed at the rear end of the left base 11 so as to protrude rightward.

The bridging portion 12 is provided so as to connect the substantially central portions of the base portions 11 in the front-rear direction, and the central portion in the left-right direction is formed as a narrow pulley control portion 12a.

The arc portion 13 is provided so as to connect between the front ends of the base portions 11 and 11 and protrudes forward. At the center in the left-right direction of the arc portion 13, a spring hook portion 13a formed by partially bending downward is formed.

Guide cam grooves 15, 15 are formed in the side surface portion 14 so as to be separated from each other in the front and rear direction. Inclined portions 15b, 15b extending downward and lower horizontal portions 15c, 15 connected to the inclined portions 15b, 15b
c. The left side surface portion 14 is provided with an actuated protrusion 14a projecting downward at a front end portion, and a locked hole 14b at a rear end portion.

The slider 10 has supported holes 11a, 11a.
are slidably supported in the front-rear direction by support pins 5a, 5a,... provided on the top plate portion 5 of the upper half 3. Then, in a state where the slider 10 is supported by the top plate 5, the extension coil spring 16 is stretched between the spring hook 13 a and the spring hook pin 5 b provided at the front end of the top 5. An urging force is applied to the slider 10 in a direction to move forward.

The holder 17 is provided as a disk holding means, and is formed by integrally forming a holding portion 18, roller support portions 19 and 20, and supported portions 21 and 21.

The holding portion 18 has a flat plate shape whose main surface faces up and down, and plays a role of holding the CD 100 or CD 200 mounted thereon. The left and right sides of the holding portion 18 are formed to have a large width in the front-rear direction, and the roller supporting portion 1 is bent downward at the front end of the holding portion 18 at the left and right ends.
9 and 20 are formed. And the roller support 1
A feed roller 22 is rotatably supported at the front ends of the rollers 9 and 20.

A motor bracket 23 is mounted on the lower surface of the left end of the holding portion 18, and a drive motor 24 is mounted on the motor bracket 23. The motor shaft of the drive motor 24 is connected to a cam follower gear 25 via a gear group (not shown) supported by the motor bracket 23. The cam follower gear 25 is located on the outer surface side of the left roller support portion 19. ing.

The cam follower gear 25 has a portion on the drive motor 24 side formed as a gear portion 25a, and an outer surface of the cam follower gear 25 is provided with a cam follower 25b protruding outward at an outer peripheral edge thereof. (See FIGS. 22 and 23). The transmission gear group 2 is provided on the roller support 19.
6 are rotatably supported in a state in which they are meshed with each other, and the transmission gear group 26 is meshed with the gear portion 25 a of the cam follower gear 25. And the drive motor 24
Is transmitted to rotate the cam follower gear 25, the feed roller 22 is rotated via the transmission gear group 26 in a direction corresponding to the rotation direction of the drive motor 24.

The supported portions 21, 21 are held by the holding portions 18, 18
The supported pins 21a, 21 which are formed by being bent upward from both left and right side edges, and which are separated from each other and protruded outward.
are formed.

In the holder 17, the supported pins 21a, 21a,... Of the supported portions 21, 21 are slidably engaged with the guide cam grooves 15, 15,. Then, the supported pins 21a, 21a,.
Is protruded outwardly from the side surface portions 14 of the slider 10, and the front end portion is supported by the linear portions 6 a and 6 b of the upper half 3 so as to be slidable in the vertical direction. Therefore, holder 1
7 is moved in the vertical direction by moving the slider 10 in the front-rear direction. Further, the feed roller 22 supported by the holder 17 is also moved in the vertical direction with the movement of the holder 17.

The positioning member 27 is CD100 or CD2
00, which is provided as positioning means for positioning 00, is substantially L-shaped, and extends in the left-right direction.
9 and an extending portion 30 extending rearward from the left end of the rack forming portion 29 are integrally formed.

A guided hole 29a extending in the left-right direction is formed in the rack forming portion 29, and a rack portion 29b is formed at the front edge. At the left end of the rack forming portion 29, a protrusion 29c protruding forward is provided. At a position near the rear end of the extension portion 30, a guided pin 30a protruding upward is formed. Further, a spring hook hole 30b is formed at the front end of the extension portion 30.

The positioning member 27 is provided with positioning shafts 27a, 27a protruding downward and spaced apart from each other at positions near the rear end of the protruding portion 29c and the extension portion 30, respectively.

The positioning member 28 is provided as positioning means for positioning the CD 100 or CD 200 together with the positioning member 27. The positioning member 28 has a substantially inverted L-shape and extends in the left-right direction, and a right end of the rack forming portion 31. An extension portion 32 extending rearward from the portion is integrally formed.

A guided hole 31a extending in the left-right direction is formed in the rack forming portion 31, and a rack portion 31b is formed at the rear edge.

The positioning member 28 is provided with positioning shafts 28a, 28a protruding downward and spaced apart from each other at the front and rear ends of the extending portion 32, respectively.

The positioning member 27 has a guided hole 29a supported by support shafts 5c, 5c provided on the top plate 5 of the upper half 3 so as to be movable in the left-right direction.
The guide hole 31a is supported by support shafts 5d, 5d provided on the top plate 5 of the upper half 3 so as to be movable in the left-right direction.

When the positioning members 27 and 28 are thus supported, the rack portion 29b of the positioning member 27 and the rack portion 31b of the positioning member 28 face each other, and the rack portions 29b and 31b are Both are meshed with a synchronous gear 5e rotatably supported by the top plate 5. Therefore, the positioning members 27 and 28 are synchronously moved in the left-right direction, that is, the direction along the main surface of the CD 100 or the CD 200 inserted from the insertion opening 2a. That is, when the positioning member 27 moves to the left, the positioning member 28 moves to the right, and when the positioning member 27 moves to the right, the positioning member 28 moves to the left in synchronization. Further, an urging spring 33 is stretched as a tension coil spring between the spring hook hole 30b of the positioning member 27 and a spring hook shaft 5f provided in the top plate portion 5, whereby the positioning members 27 and 28 are extended.
Is urged in a direction in which the extension portions 30 and 32 approach each other.

At the rear end of the extending portion 30 of the positioning member 27, one end of an operating lever 34 functioning as a trigger is rotatably supported (see FIGS. 3 and 7).
A pressing shaft 34a protruding downward is provided at a tip end of the operation lever 34, and an operation shaft 34b protruding upward is provided at a position near the rotation fulcrum.

The control cam plate 35 is provided as control cam means, and is formed in a slightly horizontal shape (see FIGS. 3 and 8).

A guide groove 36 opened to the left is formed substantially at the center of the control cam plate 35 in the front-rear direction, and the front opening edge of the guide groove 36 is separated left and right and inclined diagonally left and forward. A left inclined edge 36a and a right inclined edge 36b are formed. The guide groove 36 is formed with a restriction notch 36c that opens leftward and a restriction groove 36d that extends forward, continuing to the left end of the left inclined edge 36a and the left end of the right inclined edge 36b, respectively.

A support hole 37 is formed in the control cam plate 35 above the guide groove 36 and extends substantially in the left-right direction.
A spring receiving portion 38 is formed to protrude rearward from a substantially central portion of the rear edge of the control cam plate 35 in the left-right direction.
An actuated projection 39 is formed to project forward from a position near the left end of the front edge.

At the left end of the control cam plate 35, a pressing shaft 40 functioning as a mode setting portion projects downward. At predetermined positions of the control cam plate 35, guided holes 35a, 35a, 35a extending in the front-rear direction are formed.

The control cam plate 35 is provided with guided holes 35a, 35a.
a, 35a are slidably supported by support pins 5g, 5g, 5g formed on the top plate portion 5 of the upper half 3, respectively.
It is possible to move in the front-back direction.

When the control cam plate 35 is supported in this manner, the guided pins 30a of the positioning member 27
Is supported by the guide groove 36, and the operating shaft 3 of the operating lever 34
4b is slidably supported by the support hole 37. An operation member 41 having a pair of protrusions 41a and 41b is rotatably supported on the top plate 5, and one of the protrusions 41a abuts on the operation protrusion 11b of the slider 10 from the front,
The other projection 41b is brought into contact with the affected projection 39 of the control cam plate 35 from the front. A torsion coil spring 42 is supported at the rear end of the top plate 5.
Of the upper half 3 is elastically contacted with the arc portion 6d of the upper half 3, and the other arm is elastically contacted with the spring receiving portion 38 of the control cam plate 35 from behind, whereby the control cam plate 35 is attached forward. Be inspired.

At the rear end of the straight portion 6a of the upper half 3, a mounting recess 6e opened forward is formed.
The lock spring 43 is attached to the (see FIGS. 3, 9 and 10). The lock spring 43 includes a main portion 44 extending substantially in the front-rear direction and a pressed portion 45 protruding rightward from a substantially central portion of the main portion 44 in the front-rear direction. The front end of the main portion 44 slightly projects rightward. The main portion 44 is formed as an attached portion 44b attached to the attachment recess 6a.

The lock spring 43 has a lock portion 44a locked in the locked hole 14b of the slider 10 and the slider 1
When the pressed portion 45 is pressed by the pressing shaft 40 of the control cam plate 35, the locking portion 44a is bent to lock the slider 10 against the slider 10 (see FIG. 9). The lock is released and the movable mode is set (see FIG. 10).

The chucking pulley 46 is supported at a substantially central portion of the top plate 5 of the upper half 3 so as to be vertically movable (see FIGS. 3, 11 and 12).

The chucking pulley 46 has a magnet 4 inside a disc holding portion 47 made of a resin material.
8 and a back yoke 49 are arranged. A supported hole 47a is formed in the center of the disc holding portion 47, and the chucking pulley 46 is attached to the top plate 5 in the supported hole 47a and supported by inserting a support shaft portion 5h having a flange at a lower end portion. Have been. The outer peripheral portion of the disc pressing portion 47 is formed as a guide inclined portion 47b that is displaced toward the center as it goes downward.

The magnet 48 has a circular outer shape.
It is poled. The back yoke 49 has an annular shape whose outer diameter is smaller than that of the magnet 48, and is arranged in contact with the magnet 48.

When the slider 10 is located on the rear side of the chucking pulley 46, the pulley control unit 12a and the magnet 48 are attracted by the leakage magnetic flux α generated in the portion where the back yoke 49 does not exist (FIG. 11). reference). Therefore, the chucking pulley 46 is at the retracted position moved upward (see FIG. 11).

On the other hand, when the slider 10 is moved forward and reaches a predetermined position, the pulley control unit 12a is separated from the magnet 48.
The attracted state between a and the magnet 48 is released (see FIG. 12). Accordingly, the chucking pulley 46 is moved downward to be in a state where the CD 100 or CD 200 can be chucked (see FIG. 12).

A support member 50 is disposed on the bottom portion 7 of the lower half 4, and an optical pickup 51 is supported on the support member 50 so as to be movable in the front-rear direction.
1 has an objective lens 51a (see FIG. 3). The support member 50 supports a disk table 52 that is rotated by a spindle motor (not shown).
A center core 52a in which a magnetic material (not shown) is embedded protrudes from the center of the disk table 52 (see FIG. 14).

Then, the above-described chucking pulley 4
6 and the disc table 52 are CD100 or CD2
00 serves as a disc mounting means for mounting the disc at a predetermined position while sandwiching it from above and below.

A roller support member 53 is attached to the top plate portion 5 of the upper half 3 at a position directly above the feed roller 22, and an auxiliary roller 54 is rotatably supported by the roller support member 53 (FIG. 2). 14). A first switch 55 is provided on the top plate 5 at a position immediately behind the auxiliary roller 54 (see FIG. 19).
The second switch 56 is located at a position behind the control cam plate 35 of FIG.
Is provided (see FIG. 13).

Hereinafter, the loading operation of the CD 100 will be described.

First, the state of the disc reproducing apparatus 1 before the CD 100 is inserted into the slot 2a, that is, the initial state will be described (see FIGS. 13 and 14).

The slider 10 is located at the rear moving end (see FIG. 13), and the immobility mode is set by the lock portion 44a of the lock spring 43 being locked in the locked hole 14b of the side surface portion 14. Forward movement is restricted (see FIG. 9). The pulley control unit 12a of the slider 10 is at a position where the magnet 48 of the chucking pulley 46 can be attracted, and the chucking pulley 46 is at the retracted position (see FIG. 11).

The holder 17 is configured such that the supported pins 21 a, 21 a,... Of the supported portions 21, 21 are upper horizontal portions 15 a, 15 a of the guide cam grooves 15, 15,.
, and are located at the upper moving end (see FIG. 14).

The positioning members 27 and 28 include an urging spring 33.
As a result, the extension portions 30 and 32 are at the closest positions,
Positioning shafts 27a, 27a and positioning shafts 28a, 28a
Is minimized (see FIG. 13). And
The guided pin 30a of the positioning member 27 is located at the right end of the guide groove 36 of the control cam plate 35 (see FIG. 13).

The control cam plate 35 is positioned at the front moving end by the torsion coil spring 42 (see FIG. 13). The operating shaft 34b of the operating lever 34 is positioned at the right end of the support hole 37 of the control cam plate 35, and the pressed shaft 34
“a” is located at the front moving end and is separated from the pressed portion 45 of the lock spring 43 (see FIGS. 9 and 13).

When the CD 100 is inserted from the insertion / ejection opening 2a, the CD 100 is
4 and the outer peripheral edge is positioned by the positioning member 27.
And a positioning shaft 28a on the front side of the positioning member 28 and the front side of the positioning member 28 (see FIGS. 13 and 14).

When the CD 100 is inserted between the feed roller 22 and the auxiliary roller 54, the first switch 55, which has been in the OFF state, is turned ON (see FIGS. 19 and 20). The drive motor 24 is rotated and the feed roller 22 is rotated in a direction to pull in the CD 100, and the CD 100 is drawn into the holder 17.

When the CD 100 is pulled in by the feed roller 22 to which the driving force of the drive motor 24 is transmitted, the positioning shaft 27a and the positioning shaft 28a
The positioning member 27 is moved to the left and the positioning member 28 is moved to the right in synchronization with the outer periphery of the zero.

At this time, the chucking pulley 46 is connected to the pulley controller 12a of the slider 10 by the magnet 48.
CD1 that is pulled in because it is attracted to
No interference with 00.

Accordingly, it is possible to ensure a reliable operation state of the disc reproducing apparatus 1 and to prevent the CD 100 or the chucking pulley 46 from being damaged.

In the disk reproducing apparatus 1, the pulley control unit 12a made of a magnetic metal material and the magnet 48 are used as means for holding the chucking pulley 46 at the retracted position. It is very simple, the manufacturing cost can be reduced, and the reliability of operation can be ensured.

Even if the chucking pulley 64 is not at the retracted position because the magnet 48 is not attracted to the pulley control unit 12a due to some cause, for example, large vibration, the CD 100 that is being pulled in is guided by the chucking pulley 46. Abuts on the inclined portion 47b, and
Is moved rearward, the chucking pulley 46 moves to the upper side of the CD 100, and the CD 100 is pulled down below the chucking pulley 46, so that there is no hindrance to the pull-in operation of the CD 100.

When the CD 100 is pulled in,
Although the cam follower gear 25 is rotated by the driving force of the drive motor 24, the cam follower 25b is rotated within a range that does not interfere with the operated projection 14a of the slider 10 (see FIG. 22). Does not affect the operation of.

The CD 100 is located at a predetermined position, that is, the CD 10
At a position where the center of 0 is slightly forward of the center of the chucking pulley 46, the pressed shaft 34a of the operating lever 34 is pressed backward by the outer peripheral edge of the CD 100.

When the pressed shaft 34a is being pressed, the operating shaft 34b is moved leftward in the support hole 37 of the control cam plate 35, and the operating shaft 34b is moved rearward through the rear opening edge of the support hole 37. Press Accordingly, the control cam plate 35 is moved rearward against the urging force of the torsion coil spring 42 (see FIG. 15). The control cam plate 35 moved rearward by the operation shaft 34b does not reach the rear moving end.

When the control cam plate 35 is moved backward, the pressing shaft 40 moves the pressed portion 45 of the lock spring 43 to the locking portion 4.
4a is pressed to bend leftward, the locked state of the slider 10 by the lock portion 44a is released, and the movable mode is set (see FIGS. 10 and 15). Then, the unlocked slider 10 is moved forward by the urging force of the extension coil spring 16 (see FIGS. 15 and 16). In addition, this position of the slider 10 is a position behind the moving end on the front side in the moving range, and the slider 10 can move further forward.

When the slider 10 is moved forward by the urging force of the extension coil spring 16, the supported pins 21a, 21a,... Of the holder 17 are respectively moved to the guide cam grooves 15, 15,. Inclined portion 15b,
The holder 17 is located at the upper end of 15b,... And the holder 17 is moved slightly downward (see FIG. 16). Therefore, CD100
Is moved slightly downward with the movement of the holder 17.

When the slider 10 is moved forward, the tip of the actuated projection 14a is positioned close to the center of rotation of the cam follower gear 25 (see FIG. 16).

On the other hand, the inserted CD 100 is moved by the positioning shafts 27 of the positioning members 27 and 28 which are moved synchronously.
a, 27a, 28a, and 28a hold the outer peripheral edge, and reach a position where the center coincides with the center of the chucking pulley 46, that is, a mountable position where the CD 100 can be mounted on the disk table 52 (see FIGS. 16).

Therefore, by using the positioning members 27 and 28 which are synchronously moved in the left-right direction, the CD 100
Centering can be performed reliably.

When the CD 100 reaches the mountable position, the guided pin 30a of the positioning member 27 is in a position close to or in contact with the left inclined edge 36a of the control cam plate 35.

Positioning member 27 by inserting CD 100
Is moved in the left and right direction, the guided pin 30a is moved in the guide groove 36 of the control cam plate 35 in the left and right direction.
Then, the groove width of the guide groove 36 is adjusted by the guided pin 30a.
By ensuring that the positioning members 27 and 28 are formed in the same size as the outer diameter of the disc reproducing device 1, the loading operation of the disc reproducing apparatus 1 can be optimized. The guided pin 3 in the guide groove 36
In order not to disturb the operation of the disc reproducing device 1 and to smoothly move the positioning members 27 and 28 and to ensure the smooth operation of the positioning members 27 and 28, as shown in FIG. It is possible to form the groove width of the groove 36 larger than the guided pin 30a.

When the slider 10 is moved forward, as described above, the tip of the actuated projection 14a is positioned close to the rotation center of the cam follower gear 25 (see FIG. 16), and is thus rotated. The cam follower 25b moves below the affected protrusion 14a, and the affected protrusion 14a is pressed from behind by the cam follower 25b (FIG. 1).
8 and FIG. 23). Therefore, the slider 10 is moved forward again, and as the slider 10 moves forward, the supported pins 21a, 21a,... Of the holder 17 become inclined portions 15b of the guide cam grooves 15, 15,. , 15
are moved from b,... to the lower horizontal portions 15c, 15c,.

Are supported from the inclined portions 15b, 15b,... To the lower horizontal portions 15c, 15c.
The holder 1 is moved toward c,.
7 is lowered and the CD 1 held in the holder 17 is
00 is lowered.

At the same time, as the slider 10 moves forward, the pulley control unit 12a is separated forward from the magnet 48 of the chucking pulley 46 (see FIGS. 17 and 25). The suction state with respect to 48 is released, and the chucking pulley 46 is lowered.

At this time, the forward movement of the slider 10 causes the operation projection 11b to move to the projection 4 of the operation member 41.
1a is pressed forward. Accordingly, the action member 41 is rotated in the counterclockwise direction when viewed in a plane, and the actuated protrusion 39 of the control cam plate 35 is pressed rearward by the protrusion 41b.

The control cam plate 35 is moved rearward by the pressing of the acting projection 39 by the projection 41b of the operating member 41, and is guided by the positioning member 27 positioned close to or in contact with the left inclined edge 36a. The pin 30a is pressed by the left inclined edge 36a in a direction to move to the left. Therefore, the positioning member 27 is moved to the left and the positioning member 28 operated in synchronization with the positioning member 27 is moved to the right, and the positioning shafts 27a, 27a, 28a,
28a is separated from the outer peripheral edge of the CD 100 (see FIG. 17). At this time, the movement of the control cam plate 35 rearward causes the pressed shaft 34a of the operation lever 34 to move the CD100.
To the rear.

The guided pin 30a is positioned in the regulation notch 36c by the rearward movement of the control cam plate 35,
As a result, the positioning members 27 and 28
a, 27a, 28a, 28a are held at positions separated from the CD 100 (see FIG. 17).

The lowered CD 100 is placed on the disk table 52 located below, and the center core 52a is fitted in the center hole 100a. At this time, the lowered chucking pulley 46 has the magnet 48 attracted to the magnetic material embedded in the center core 52a, whereby the CD 100 is chucked at the mounting position by the disc table 52 and the chucking pulley 46 (FIG. 18).

The holder 17 is further lowered by the forward movement of the slider 10, and the supported pins 21a, 21a
When a,... has reached the lower horizontal portions 15c, 15c,... of the guide cam grooves 15, 15,. When the supported pins 21a, 21a, ... reach the lower horizontal portions 15c, 15c, ..., the holder 17 is separated downward from the chucked CD 100, and as described above. , Positioning shaft 27
Since a, 27a, 28a, and 28a are separated from the outer peripheral edge of the CD 100, the CD 100 can be rotated.

When the control cam plate 35 is moved rearward by the turning operation of the action member 41, the control cam plate 3
The second switch 56 is operated by the trailing edge of the switch 5 to turn on the switch, and after a predetermined time has elapsed, the rotation of the drive motor 24 is stopped.
The relationship between the switch 56 and the operation of the drive motor 24 will be described later in detail.

As described above, when the CD 100 is chucked and a play button (not shown) is operated, the CD 100 is rotated along with the rotation of the disk table 52 due to the rotation of the spindle motor. The laser light is C through the lens 51a.
The D100 is irradiated to reproduce the information signal recorded on the CD100.

When the reproducing operation for the CD 100 is completed and an eject button (not shown) is operated, the eject operation for the CD 100 is started. Note that the eject operation is the reverse operation of the above-described loading operation, and therefore will be briefly described below.

When the eject button is operated, the driving motor 24 is rotated in the direction opposite to the direction of the loading operation, and the state in which the cam 10 is pressed by the cam follower gear 25 onto the operated projection 14a is released. Is moved forward by the urging force of the torsion coil spring 42.

When the control cam plate 35 is moved forward, the protruding portion 41a is pressed by the protruding
1 is rotated clockwise as viewed in a plane, and the protrusion 41a presses the action protrusion 11b of the slider 10 backward. Therefore, the slider 10 is moved backward, and the holder 17 is moved.
Is raised.

When the holder 17 is raised and the slider 10 is moved backward, the chucking state for the CD 100 is released and the slider 1 is moved.
Chucking pulley 46 to the pulley control unit 12a
Chuck 48 is attracted to the chucking pulley 46.
Reaches the evacuation position.

When the CD 100 is moved upward with the movement of the holder 17, the CD 100 is nipped by the feed roller 22 and the auxiliary roller 54, and is ejected from the insertion opening 2a by the rotation of the feed roller 22. The CD 100 is ejected until a part thereof projects from the insertion / ejection opening 2a, and the CD 100 can be taken out by grasping and pulling out the CD 100.

When the ejecting operation of the CD 100 has been completed, the respective members have returned to the initial state, and the slider 10 is positioned at the rear moving end, and is restricted from moving forward by the lock spring 43. The king pulley 46 is at the retracted position, the holder 17 is located at the upper moving end, the positioning members 27 and 28 are at the positions where the extending portions 30 and 32 are closest, and the guided pins 30a of the positioning members 27 are The control cam plate 35 is located at the right end of the guide groove 36, the control cam plate 35 is located at the front moving end, and the operating shaft 34 b of the operating lever 34 is located at the right end of the support hole 37 of the control cam plate 35. (See FIGS. 13 and 14).

As described above, the disc reproducing apparatus 1
, The drive motor 24 is rotated to drive the CD 100
Are automatically drawn in or discharged, so that the usability of the disc reproducing apparatus 1 can be improved. In particular, since the loading operation and the ejecting operation are automatically performed by one driving motor 24, the mechanism can be simplified, and the disk reproducing apparatus having the automatic loading mechanism and the ejecting mechanism without increasing the size. Can be realized.

Further, in the disc reproducing apparatus 1, since the pressing shaft 40 for moving the slider 10 for controlling the vertical position of the holder 17 is provided on the control cam plate 35, the number of parts can be reduced. As a result, the manufacturing cost can be reduced.

Further, in the disk reproducing device 1,
Since the operation lever 34 is provided to move the control cam plate 35 when the CD 100 inserted through the insertion opening 2a comes into contact with the operation lever 34, the operation is started only when the CD 100 is inserted, so that erroneous operation can be avoided.

Next, the relationship between the operation of the first switch 55 and the second switch 56 and the drive motor 24 will be described (see FIGS. 26 and 27).

First, the relationship during the loading operation will be described (see FIG. 26).

When the CD 100 is inserted through the slot 2a (see FIG. 19), as described above, the first switch 55
Is turned on by the operation of the CD 100 (see FIG. 20), and the rotation of the drive motor 24 is started (P1).

When the holder 17 is lowered by moving the slider 10 forward (see FIG. 21), the first switch 55 is turned off (P2). Even if the first switch 55 is turned off,
The rotation of the drive motor 24 is not stopped (P2).

The slider 10 is further moved forward,
The second switch 56 is operated by the control cam plate 35 to be turned on (P3). When the second switch 56 is turned on, the rotation of the drive motor 24 is stopped after a lapse of a predetermined time, for example, 0.5 seconds (P4). At this time, the chucking of the CD 100 is completed and the CD 100 is in a rotatable state.

Next, the relationship during the ejection operation will be described (see FIG. 27).

When the eject button is operated, the rotation of the drive motor 24 starts (Q1). When the eject button is operated, the second switch 56 is operated by the control cam plate 35 and remains in the ON state (Q1).

When the control cam plate 35 is moved forward, the operation of the control cam plate 35 on the second switch 56 is released, and the second switch 56 is turned on by the switch O.
The state becomes FF (Q2). Even if the second switch 55 is turned off, the rotation of the drive motor 24 is not stopped (Q2).

As the holder 17 is raised, the CD 100 is moved upward, and the first switch 55 is operated by the CD 100 to turn on the switch (Q3) (see FIG. 20).

When the CD 100 is ejected from the slot 2a and the operation on the first switch 55 is released (see FIG. 19), the rotation of the drive motor 24 is stopped (Q4).

As described above, in the disk reproducing apparatus 1, since the operation of the drive motor 24 is controlled using only the two switches 55 and 56, the number of parts is reduced and the mechanism is simplified. be able to.

The disc reproducing apparatus 1 can also reproduce information signals recorded on the CD 200, which is a small-diameter disc, in addition to the CD 100 described above. still,
The operation of the CD 200 is different from that of the CD 100 in that the moving range of the positioning members 27 and 28 is smaller than that of the CD 2.
The only difference is the small point corresponding to the outer diameter of 00, and only the different operations will be described.

[0107] CD inserted and pulled in from the slot 2a
200 is a positioning member 27, 28 which is moved synchronously.
The outer peripheral edge is supported by the positioning shafts 27a, 27a, 28a, 28a, and reaches a mountable position whose center coincides with the center of the chucking pulley 46.

When the CD 200 reaches the mountable position, the guided pin 30a of the positioning member 27 is in a position close to or in contact with the right inclined edge 36b of the control cam plate 35.

When the slider 10 moves forward, the operating member 41 is rotated in the counterclockwise direction when viewed in a plane, and the projection 41b pushes the acting projection 39 rearward, whereby the control cam plate 35 is moved rearward. Moved to the right inclined edge 36b
The guided pin 30a of the positioning member 27 that is positioned close to or in contact with is pressed by the right inclined edge 36b in a direction to move to the left. Therefore, the positioning member 27
Is moved to the left, and the positioning member 28 operated in synchronization with the positioning member 27 is moved to the right, and the positioning shafts 27a, 27a, 28a, 28a are separated from the outer peripheral edge of the CD 200 ( See FIG. 28). Further, at this time, the pressed shaft 34a of the operating lever 34 is separated rearward from the CD 200 by the rearward movement of the control cam plate 35.

The chucking operation for the CD 200 is performed in the same manner as the operation for the CD 100. When the CD 200 is chucked and a playback button (not shown) is operated, a playback operation on the CD 200 is performed.

As described above, the disc reproducing apparatus 1
In this case, positioning members 27 and 28 for supporting the CD 100 or CD 200 inserted through the insertion / ejection opening 2a and positioning the CD 100 or CD 200 at the mountable position, and a control cam plate 35 for releasing the support of the positioning members 27 and 28 for the CD 100 or CD 200. Is provided, it is not necessary to use a disk adapter for inserting the CD 200 unlike the conventional disk reproducing apparatus, and the usability of the disk reproducing apparatus 1 can be improved.

Only when the inserted disk-shaped recording medium is CD100 or CD200 having a predetermined outer diameter, the control cam plate 35 is moved rearward and the positioning member 2 is moved.
7 and 28 are released, the disc reproducing apparatus 1
Can be optimized, and the reliability of the operation can be ensured.

Next, the forcible feed mechanism will be described (see FIGS. 29 and 30). This forced feed mechanism is a CD10
This is a mechanism for forcibly loading or ejecting the CDs 100 and 200 by manual operation when the operation is interrupted due to, for example, running out of a battery or the like at the time of a loading operation or an ejecting operation for the CD 0 or the CD 200. This mechanism is shown in FIGS.
It is shown only in FIG. 29 and FIG. 30, and illustration in other figures is omitted.

The forcible feed mechanism 57 is provided in the vicinity of the linear portion 8a of the lower half 4, and the forcible feed mechanism 57 is composed of an operation handle 58 provided as an operation lever and a gear body 59 (FIG. 29 and FIG. 29). See FIG. 30).

The operation handle 58 is a handle operation section 60.
Mechanism 6 so that can rotate with respect to the rotating portion 61
2 are connected.

The handle operating portion 60 is formed integrally with a longitudinal portion 60a extending in one direction and a grip portion 60b protruding at a right angle from one end of the longitudinal portion 60a. The locking groove 60c is formed to extend.

The rotating section 61 includes a shaft 61a and the shaft 61a.
And a flange portion 61b integrally provided at one end of the shaft portion 61c. A gear portion 61c is formed as a clutch gear on a surface of the flange portion 61b on the shaft portion 61a side.

The gear body 59 includes an annular portion 63 and the annular portion 63.
A clutch gear 63 a is formed on the inner surface of the annular portion 63, and an outer gear 64 a is formed on the outer periphery of the distal end of the cylindrical portion 64. And the center hole of the annular portion 63 is the insertion hole 63.
b.

In the straight portion 8a of the lower half 4, a shallow storage recess 65 opened to the left is formed, and the front and rear ends of the storage recess 65 are provided with insertion holes 6 communicating with the arrangement space 9, respectively.
6 and an arrangement hole 67 are formed.

A rear end of a plate-like stopper spring 68 is attached to the inner surface of the rear end of the linear portion 8a. The front end of the stopper spring 68 is formed as a stopper 68a bent into a predetermined shape. Have been. At a position near the front end of the stopper spring 68, an operation portion 68b protruding leftward is provided, and the tip of the operation portion 68b protrudes from the outer surface of the linear portion 8a.

In the forced feed mechanism 57, the outer gear 64a of the gear body 59 is meshed with the gear portion 25a of the cam follower gear 25. Then, in this state, the operation handle 58
The shaft portion 61a is inserted through the insertion hole 66 formed in the linear portion 8a and the insertion hole 63b of the gear body 59, and the flange portion 61 is formed.
b is disposed inside the gear body 59, and the gear portion 61c of the operation handle 58 and the clutch gear 63a of the gear body 59 are in a state of facing each other.

When the forcible feed mechanism 57 is not used,
The grip portion 60b of the operation handle 58 is arranged in the arrangement hole 67 formed in the linear portion 8a, and the longitudinal portion 60a
To be stored. At this time, the locking groove 60 of the operation handle 58
Since the stopper portion 68a of the stopper spring 68 is locked to c, the operation handle 58 is in a locked state (see FIGS. 1 and 29).

Thus, when not in use, the operating handle 5
8 can be stored, so that the operation handle 58 only needs to be pulled out of the storage recess 65 when necessary, so that the usability of the forced feed mechanism 57 is improved and the forced feed mechanism 5
7 does not interfere with the normal use of the disc reproducing apparatus 1.

Further, since the operation handle 58 does not protrude from the outer casing 2 when not in use, the forcible feed mechanism 57 is not accidentally damaged.

When the forcible feed mechanism 57 is used, the operation portion 68b of the stopper spring 68 is pressed. By pressing the operation portion 68b, the stopper spring 6
8 is bent to the right, and the operating handle 58 is bent.
Is released from the locking groove 60c. Then, by pulling out the operation handle 58 from the storage recess 65 and further pulling the operation handle 58 leftward, the gear portion 61c and the clutch gear 63a are meshed (FIG. 3).
0).

When the operating handle 58 is rotated in this state, the rotating force is transmitted from the gear body 59 to the cam follower gear 25, and the above-described loading operation or ejecting operation is performed manually according to the rotating direction of the operating handle 58. It is performed by an operation (see FIG. 2).

As described above, the disc reproducing apparatus 1
In this case, a forced feed mechanism 57 is provided so that the CD 100 or CD 200 can be loaded or ejected by manual operation.

Therefore, even when the power is turned off, the loading operation or the ejecting operation can be easily performed, and the usability of the disc reproducing apparatus 1 can be greatly improved.

Further, since the manual operation using the forced feed mechanism 57 is performed by rotating the operation handle 58, the space for disposing the forced feed mechanism 57 is small, which contributes to the downsizing of the disc reproducing apparatus 1. At the same time, the amount of force required for the forced feeding operation can be reduced.

Further, in the disk reproducing device 1,
Because the outer gear 64a of the forced feed mechanism 57 is directly engaged with the gear portion 25a of the cam follower gear 25 to enable the forced feed operation, the arrangement space for the forced feed mechanism 57 can be further reduced, and the number of parts can be reduced. The manufacturing cost can be reduced to a small extent.

Although the above description has been given of the case where the present invention is applied to a disk reproducing apparatus for reproducing an information signal recorded on a disk-shaped recording medium, the present invention is directed to recording or recording or reproducing an information signal. The present invention can also be applied to a disk recording device or a disk recording / reproducing device that performs both.

The specific shapes and structures of the respective parts shown in the above-described embodiments are merely examples of the specific embodiments for carrying out the present invention. The scope should not be construed as limiting.

[0133]

As is apparent from the above description, the recording medium forcible feeding mechanism of the present invention uses an electrically operated mechanism to load a recording medium inserted from a slot formed in the housing. In a recording medium driving device that ejects toward a slot or a slot, the recording medium can be loaded or ejected by manual operation.

Therefore, even when the power is turned off, the loading operation or the ejecting operation can be easily performed, and the usability of the apparatus using the recording medium forcibly feeding mechanism can be greatly improved.

According to the second aspect of the present invention, since the operation lever for performing the manual operation is provided and the housing for housing the operation lever is provided in the housing, the operation from the housing is performed only when necessary. By pulling out the lever, the usability of the forced-feed mechanism is improved, and the apparatus using the forced-feed mechanism is not obstructed during normal use.

Further, since the operation lever does not protrude from the housing when not in use, the forcible feed mechanism is not accidentally damaged.

According to the third aspect of the present invention, the rotation operation lever is provided, and the recording medium is loaded or ejected by rotating the rotation operation lever. This contributes to downsizing of a device using the forcible feed mechanism, and requires less force for the forcible feed operation.

According to the fourth aspect of the present invention, a rotary operation lever for loading or ejecting a recording medium by rotating the operation lever is provided, so that a space for disposing the forcible feed mechanism is small and the forcible feed mechanism is provided. This contributes to downsizing of the device using the mechanism, and requires a small amount of force for the forced feeding operation.

According to the fifth and sixth aspects of the present invention, as a part of the mechanism which is driven by electric power, the driving gear for transmitting the driving force of the driving motor to rotate and load or eject the recording medium. Is provided, and the drive gear is rotated by the rotation operation of the rotation operation lever. Therefore, the space for disposing the forced feed mechanism can be further reduced, and the number of parts is reduced, so that the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 shows an embodiment in which the present invention is applied to a disk reproducing apparatus together with FIG. 2 to FIG. 30, and FIG. 1 is a schematic perspective view of the disk reproducing apparatus.

FIG. 2 is a schematic perspective view of the disc reproducing apparatus showing a state where an operation handle is pulled out.

FIG. 3 is a plan view showing an internal mechanism.

FIG. 4 is a plan view of a slider.

FIG. 5 is a side view of the slider.

FIG. 6 is a plan view showing a holder provided with required members.

FIG. 7 is a plan view showing a positioning member and an action lever supported by the positioning member.

FIG. 8 is a plan view of a control cam plate.

FIG. 9 is an enlarged plan view showing a state in which the slider is locked by a lock spring, with a part thereof being in section.

FIG. 10 is an enlarged plan view showing a state in which a lock of a slider by a lock spring is released, with a part thereof being a cross section.

FIG. 11 is an enlarged sectional view showing a state where the chucking pulley is at a retracted position.

FIG. 12 is an enlarged sectional view showing a state where the chucking pulley is lowered.

FIG. 13 shows the operation of each mechanism together with FIGS. 14 to 18, and FIG. 13 is a plan view showing an initial state.

FIG. 14 is an enlarged side view showing an initial state.

FIG. 15 is a plan view showing a state where a CD is at a mountable position.

FIG. 16 is an enlarged side view showing a state where a CD is at a mountable position.

FIG. 17 is a plan view showing a state where the CD is chucked.

FIG. 18 is an enlarged side view showing a state where the CD is chucked.

19 shows the relationship between the CD and the first switch together with FIGS. 20 and 21, and is a schematic side view showing a state before the first switch is operated. FIG.

FIG. 20 is a schematic side view showing a state where the first switch is operated.

FIG. 21 is a schematic side view showing a state in which the operation on the first switch is released.

FIG. 22 shows the relationship between the cam follower and the operated protrusion of the slider together with FIG. 23. FIG. 22 is an enlarged side view showing a state where the cam follower is not involved in the operated protrusion.

FIG. 23 is an enlarged side view showing a state in which an actuated projection is pressed by a cam follower.

24 shows the relationship between the pulley control unit of the slider and the chucking pulley together with FIG. 25. FIG. 24 is an enlarged plan view showing a state where the magnet is attracted to the pulley control unit.

FIG. 25 is an enlarged plan view showing a state where the attraction of the pulley control unit to the magnet is released.

26 shows the relationship between the switch and the drive motor together with FIG. 27, and this figure is a time chart at the time of the loading operation.

FIG. 27 is a time chart at the time of an ejection operation.

FIG. 28 is a plan view showing a state where a small-diameter CD is chucked.

29 is a diagram showing the forced feed mechanism together with FIG. 30, and this figure is an enlarged plan view showing a part of the state when the forced feed mechanism is not used in section.

FIG. 30 is an enlarged plan view partially showing a cross section of a state when the forcible feed mechanism is used.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Disc reproducing apparatus (recording medium drive), 2 ... Outer case (housing), 2a ... Slot, 24 ... Drive motor, 25 ...
Cam follower gear (drive gear), 57: forced feed mechanism, 58: operation handle (operation lever)

Claims (6)

[Claims] 1. A recording medium driving device for loading or ejecting a recording medium inserted from an insertion opening formed in a housing by an electrically operated mechanism, wherein the recording medium is manually operated. A forcible feeding mechanism for a recording medium, wherein loading or ejecting is possible. 2. The recording medium forcibly feeding mechanism according to claim 1, wherein an operation lever for performing a manual operation is provided, and a housing portion for housing the operation lever is provided in a housing. 3. A recording medium is loaded or ejected by providing a rotation operation lever and rotating the rotation operation lever.
2. A recording medium forcible feeding mechanism according to claim 1. 4. The recording medium forcibly feeding mechanism according to claim 2, wherein a rotation operation lever for loading or ejecting the recording medium by rotating the operation lever is provided as the operation lever. 5. A driving gear, which is driven by a driving force of a driving motor to rotate and loads or ejects a recording medium, is provided as a part of the mechanism operated by electric power, and the driving gear is rotated by a rotation operation of a rotation operation lever. 4. The mechanism for forcibly feeding a recording medium according to claim 3, wherein the mechanism is adapted to cause the recording medium to be forcibly fed. 6. A drive gear for transmitting a driving force of a drive motor to rotate and loading or ejecting a recording medium is provided as a part of an electrically operated mechanism, and the drive gear is rotated by a rotation operation of a rotation operation lever. 5. The recording medium forcibly feeding mechanism according to claim 4, wherein the recording medium is forcibly fed.