JPH06176370A - Optical disk player - Google Patents

Abstract

PURPOSE:To effectively utilize the displacement area of the folded part of a flexible substrate by integrally providing a pressing part pressing an optical pickup so that a bended part is placed without the actuating area of a slide member at an ejecting time on the slide member. CONSTITUTION:When the optical disk in the state of stopping recording and reproducing is ejected, an engaging pin 54a is abutted on the opening edge 44a of the window part 44 of the side plate 42 of the slide member 41, and pressing force in the direction of the arrow (b) is imparted when a drive mechanism 50 is driven and a gear 54 is rotated counterclockwise. Thus, the engaging pins 38, 39 of a holder 31 are thrust up gradually from the lowermost step of the guide grooves 43a, 43b of the side plate 42, and the engaging pin 35d of a rotating member 35 is sneaked around the tip part of an engaging piece 42a when the pins 38, 39 are thrust up the uppermost step, and is displaced to the linear side of the engaging piece 42a, and the pin 35d is engaged at the linear side of the engaging piece 42a, and a rotation lever 62 is rotated counterclockwise. Thus, a slide lever 65 is slided in the direction of the arrow (b), and a body 25 is pressed by the pressing part 68 through a buffer member 69 in the direction of the arrow (b).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc player in which an optical pickup is movable in a radial direction of a disc by a linear motor type.

[0002]

2. Description of the Related Art In recent years, in addition to audio compact discs, video discs, etc. in which information is stored in advance,
Write-once optical discs, rewritable magneto-optical discs, and the like have been commercialized, but demands for miniaturization of these optical disc players are increasing more and more as the market expands.

FIG. 1 and FIG. 2 show an example of a conventional optical disc player which has been downsized in order to meet such requirements, and the configuration thereof will be described below. Base plate 10
A reproduction mechanism 20, a hold mechanism 30, a loading mechanism 40, and a drive mechanism 50 are provided on the top.

The turntable 21 of the reproducing mechanism 20 is rotatably arranged near the disc insertion opening (indicated by an arrow in the figure) on the base plate 10. In the vicinity of the turntable 21, two guide rails 22, 22 are arranged in parallel at a position sandwiching the turntable 21. Permanent magnets 23 are arranged near the guide rails 22 along the guide rails 22.

An optical pickup 24 is attached to each of the guide rails 22 through a supporting member 26 around which coils are provided on both sides of a pickup body 25, and the arrows a and b are provided therebetween.
It is mounted so that it can slide in any direction. At the front side of the pickup body 25, one end of a flexible substrate 27 for inputting / outputting drive signals and read signals is attached.

The other end of the flexible substrate 27 is folded back near the turntable 21 (hereinafter, this folded portion is referred to as a curved portion 27a) and is drawn out to the back side of the drive mechanism 50.

As a result, when the optical pickup 24 moves along the guide rails 22 in the directions of arrows a and b, the flexibility of the flexible substrate 27 causes the curved portion 27a to move in the same direction. It does not hinder the movement of the pickup 24.

The holding mechanism 30 is provided with a holder 31 which holds an optical disc package (not shown) inserted from the insertion port and then descends to the turntable 21 side. A substantially L-shaped rotating lever 3 having an opening / closing pin 32 for opening / closing a shutter that covers the window of the optical disc package is formed in the substantially center of the upper surface of the holder 31.
3 is rotatably arranged with the shaft 33a as a fulcrum.
One end of the spring 33b is locked to one end of the rotating lever 33. As a result, the rotating lever 33 is always biased in the direction of arrow c.

An exciting coil 34 for generating a magnetic field at the time of recording information and initializing information is arranged near the rotating lever 33. A rotating member 35 is attached to a corner of the upper surface of the holder 31 so as to be rotatable around a shaft 35a as a fulcrum. One end of a spring 35c is locked in a locking hole 35b provided at a position apart from the fulcrum. A locking pin 35d, which is locked to a locking piece 42a described later, is provided at a position apart from the fulcrum. Further, on the lower surface side of the rotating member 35, a contact pin (not shown) that abuts on the edge portion of the inserted optical disc package is projected. When the edge of the optical disk package comes into contact with the contact pin, the rotating member 35 rotates clockwise.

A guide piece 36 for facilitating the insertion of the optical disc package and a guide portion 37 extending from the guide piece 36 are provided on the lower surface side of the holder 31. Further, the base plate 10 is provided on both sides of the holder 31.
An engaging pin 38 engaged with the vertical groove 12 of the support member 11 attached to the guide groove 43a and a guide groove 43a described later, and an engaging pin 39 engaged with a guide groove 43b described later are provided in a protruding manner.

The loading mechanism 40 is provided with a slide member 41 having a U-shaped cross section so as to be movable in the directions of arrows a and b. On the side plate 42 of the slide member 41, guide grooves 43a and 43b having a shape inclined obliquely downward are formed.

A window portion 44 is formed on the side plate 42 of the slide member 41. An engagement pin 54a provided at a position displaced from the center of a gear 54, which will be described later, is engaged with the opening edge 44a of the window 44. A locking piece 42a folded back in the horizontal direction is provided on the upper edge of the side plate 42 of the slide member 41.

The bottom plate portion 45 of the slide member 41 is provided with long plate portions 46 and 47 extending in parallel along the guide rail 22. The guide groove 4 is provided on each of the long plate portions 46 and 47.
6a, 46b, 47a, 47b are formed, and engagement pins 48 projectingly provided on the base plate 10 are formed in these grooves.
Is stuck in.

The drive base plate 51 of the drive mechanism 50 is fixed to the base plate 10 and is provided with a drive gear 52a attached to the drive shaft of a drive motor (not shown). A gear 54 is meshed with the drive gear 52a via intermediate gears 52b and 53. An engagement pin 54a is provided at a position deviated from the center of the gear 54 so as to project from the gear 5
By the rotation of 4, the engagement pin 54a abuts against the opening edge 44a of the window 44 and presses the opening edge 44a, thereby moving the slide member 41 in the direction of the arrow b via the side plate 42.

In the optical disc player having such a structure, when the optical disc package is inserted from the insertion port, the edge of the optical disc package abuts on the abutment pin projecting on the lower surface side of the rotating member 35, and the rotating member is rotated. 35 is rotated clockwise. As a result, the locking pin 35d of the rotating member 35 is disengaged from the locking piece 42a of the side plate 42 of the slide member 41, so that the engaging pins 38, 39 move the guide grooves 43a, 43b of the side plate 42 by the weight of the holder 31. The slide member 41 is pressed and moved in the direction of arrow a. At this time, the engagement pin 38 is engaged with the vertical groove 12 of the support member 11.
, The holder 31 descends in the vertical direction. As a result, the optical disc in the optical disc package is placed on the turntable 21. This completes the loading operation of the optical disc.

At the time of recording on or reproducing from the optical disk, an exciting current is supplied to the coil wound around the supporting member 26, and the optical pickup 24 is guided along the guide rail 22 by the reaction of the magnetic flux from the permanent magnet 23. It is once moved to the inner circumferential position of the optical disc in the direction of arrow a. At this time, as can be seen from FIG. 1, the flexibility of the flexible substrate 27 causes the curved portion 27a to move in the same direction, so that the presence of the flexible substrate 27 does not hinder the movement of the optical pickup 24.

[0017]

By the way, in the above-mentioned optical disc player, the position of the optical pickup 24 is arbitrary after the recording / reproducing operation is completed.
If it is now on the inner circumference side of the optical disc (near the turntable 21), the curved portion 27a of the flexible substrate 27
As shown in Fig. 2, since it comes closer to the disc insertion slot side,
It is close to the center of the slide member 41 for loading the optical disc package.

Therefore, a to a in the central portion of the slide member 41
The operating range in the b direction must be set outside the operating range (shown by A in FIG. 2) of the curved portion 27a of the flexible substrate,
This is an obstacle to the downsizing of the player, that is, the shortening of the depth dimension viewed from the insertion opening.

To solve this, for example, the optical pickup 2 must be used after the recording / reproducing operation of the optical disk player is completed.
4 may be moved to the vicinity of the outer circumference of the optical disk. However, when the drive means of the optical pickup 24 is a linear motor system as in the conventional example, it is always movable, and therefore a special lock near the outer circumference of the optical disk. Means must be provided, and the structure such as the control means for moving the optical pickup and the locking means may be complicated and costly.

The present invention has been made in view of such circumstances, and when the recording / reproducing operation is completed, the optical pickup is positioned at a predetermined position with a simple structure to effectively use the transition area of the folded portion of the flexible substrate. An object of the present invention is to provide an optical disk player that can be designed.

[0021]

In order to achieve the above object, an optical disc player of the present invention comprises an optical pickup which is moved by a linear motor in the radial direction of the disc.
A slide member that is movable in the same direction as the movement direction of the optical pickup and that moves the optical disc between the recording / reproducing position and the eject position, and one end is attached to the optical pickup and the other end that is bent back is attached to the fixing member. An optical disc player comprising a flexible substrate for connecting an optical pickup and a control circuit, wherein the bent portion of the flexible substrate is displaced in the same direction as the moving direction of the optical pickup when the optical pickup moves. The displacement area of the curved portion of the flexible substrate and the operation area of the slide member are arranged so as to overlap each other, and at the time of ejection, the pressing portion that presses the optical pickup so that the curved portion is outside the operation area of the slide member is slid. It is characterized in that it is provided integrally with the member.

[0022]

In the optical disk player of the present invention, when the slide member ejects the disk, the pressing portion provided integrally moves and fixes the optical pickup to a predetermined position. At this time, naturally, the curved portion of the flexible substrate also shifts in the moving direction of the optical pickup and moves out of the operating range of the slide member. Therefore, it is possible to effectively utilize the transition region of the folded portion of the flexible substrate.

[0023]

Embodiments of the present invention will be described below in detail with reference to the drawings. In the drawings described below, the same parts as those in FIGS. 1 and 2 are designated by the same reference numerals, and overlapping description will be omitted. 3 to 6 show an embodiment of the optical disc player of the present invention, in which a lock mechanism 60 is added as a configuration different from the conventional one.

That is, as shown in FIGS. 3 and 5, a lock mechanism 60 for locking the optical pickup 24 in the direction of the arrow b when the disc package is ejected is disposed between the guide rails 22. There is. The lock base 61 of the lock mechanism 60 is fitted in the fitting recess 13 formed in the base plate 10. Base plate 10
The lock base 61 is fixed to the lock base 61 by screws.

As can be seen from FIG. 5, a rotation lever 62 is rotatably attached to the lock base 61 about a shaft 63 as a fulcrum. The rotation lever 62 includes a slide member 4
An engaging pin 64 that engages with an engaging hole 45a formed in the bottom plate portion 45 of No. 1 is provided. The engagement pin 62a provided at the end of the rotation lever 62 is provided on the slide lever 6
5 is loosely fitted in the engagement hole 65a.

The long grooves 66 and 67 formed in the slide lever 65 are fitted into the protruding pins 61a protruding from the lock base 61. At the end of the slide lever 65, the pickup body 25 of the optical pickup 24 is attached.
A pressing portion 68 for pressing in the direction of arrow b is provided. A cushioning member 69 is attached to the pressing portion 68 for cushioning the impact on the pickup body 25.
The movement of the slide lever 65 in the directions of the arrows a and b is performed by the displacement of the engagement pin 64 that is displaced along with the movement of the slide member 41.

As shown in FIG. 4, in the fitting recess 13 of the base plate 10, there is formed an arc-shaped fitting groove 14 into which the engaging pin 64 protruding from the rotating lever 62 is fitted. ing. The curve of the fitting groove 14 is formed along with the movement locus of the engagement pin 64.

Next, the operation of the optical disc player having such a configuration will be described. First, in the case of ejecting the optical disk in the recording / reproduction stopped state, the drive mechanism 5
The 0 drive motor is driven. The driving force of this drive motor is transmitted to the gear 54 via the drive gear 52a and the intermediate gears 52b and 53. As a result, when the gear 54 rotates counterclockwise, the engagement pin 5 protruding from the gear 54
4a contacts the opening edge 44a of the window 44 of the side plate 42 of the slide member 41, and applies a pressing force in the arrow b direction.

Due to the pressing force of the engaging pin 54a, the engaging pins 38 and 39 of the holder 31 are guided to the guide groove 43 of the side plate 42.
It is pushed up gradually from the bottom of a and 43b. At this time,
Rotating member 35 provided at a corner of the upper surface of holder 31
Locking pin 35d contacts the curved side of the locking piece 42a provided on the upper end edge of the side plate 42 of the slide member 41, and the locking pin 35d moves to the locking piece 42a as the holder 31 rises. Gradually move to the tip side.

When the engaging pins 38 and 39 of the holder 31 are further pushed up from the lowermost stage of the guide grooves 43a and 43b of the side plate 42 to reach the uppermost stage position, the locking pin 3 of the rotating member 35 is formed.
5d wraps around the tip of the locking piece 42a of the side plate 42 and shifts to the straight side of the locking piece 42a. As a result, the locking pin 35d is locked on the straight side of the locking piece 42a, so that the holder 31 is restricted from moving in the vertical direction.

At this time, the slide member 41 is held by the holder 3
1, the engaging hole 45a of the bottom plate portion 45 of the slide member 41 is moved along with the operation of gradually moving in the direction of the arrow a with the ascending operation of 1.
When the engagement pin 64 engaged with is gradually rotated counterclockwise, the rotation lever 62 is rotated counterclockwise about the shaft 63 as a fulcrum.

As the rotating lever 62 rotates, the engaging hole 65
The slide lever 65 slides in the direction of arrow b due to the displacement force of the engagement pin 62a loosely fitted in a. As a result, the pressing portion 68 of the slide lever 65 causes the buffer member 69 to move.
The pickup body 25 is pressed in the direction of arrow b via.

At this time, the flexible substrate 27 connected to the pickup body 25 of the optical pickup 24.
Since the curved portion 27a of the slide member changes in the same direction due to its flexibility, the curved portion 27a does not contact the central portion of the slide member 41, and the slide member 41 can sufficiently operate.

On the other hand, when the optical disc package is inserted from the insertion port, as described above, the locking pin 35d of the rotating member 35 is disengaged from the locking piece 42a of the side plate 42 of the slide member 41, so that the slide member 41 is arrowed. Move in the a direction. At this time, since the engagement pin 38 is engaged with the vertical groove 12 of the support member 11, the holder 31 is vertically lowered and the optical disc is mounted on the turntable 21 to be in a recordable / reproducible state.

At this time, the arrow a of the slide member 41
As the engaging pin 64 engaged with the engaging hole 45a gradually rotates in the counterclockwise direction with the movement in the direction, the rotating lever 62 rotates counterclockwise about the shaft 63 as a fulcrum. Move.

With the rotation of the rotation lever 62, the engagement hole 65
When the slide lever 65 slides in the direction of the arrow a due to the displacement force of the engagement pin 62a loosely fitted in a, the pressing portion 68 of the slide lever 65 is moved to the pickup body 25.
The pickup body 25 is free from movement in the directions of arrows a and b.

In this embodiment, the pressing portion 68 that locks the optical pickup 24 is provided on the slide lever 65 that is provided separately from the slide member 41 and that is driven via the rotary lever 62 that interlocks with the slide member 41. However, if the movement timing and the movement stroke of the optical pickup 24 can be accurately performed, the optical pickup 24 can be fixed to the slide member 41.

[0038]

As described above, according to the optical disc player of the present invention, when the disc is ejected by interlocking with the sliding movement of the slide member, the optical pickup is pressed by the pressing portion in the direction away from the turntable and locked. Since it is set to the state, the optical pickup can be locked at a good timing without requiring any special locking mechanism or control. At this time, since the curved portion of the flexible substrate retracts in the same direction as the moving direction of the slide member, the transition area of the folded portion of the flexible substrate can be effectively used, and the optical disc player can be downsized.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a conventional optical disc player.

2 is a plan view showing the optical disc player of FIG. 1. FIG.

FIG. 3 is a perspective view showing an embodiment of an optical disc player of the present invention.

4 is a bottom view showing the optical disc player of FIG. 3. FIG.

5 is a perspective view showing the lock mechanism of FIG. 3. FIG.

6 is a perspective view showing the lock mechanism of FIG. 3. FIG.

[Explanation of symbols]

 10 Base Plate 20 Playback Mechanism 21 Turntable 22 Guide Rail 24 Optical Pickup 25 Pickup Body 27 Flexible Board 30 Hold Mechanism 31 Holder 40 Loading Mechanism 41 Slide Member 41 42 Side Plate 50 Drive Mechanism 60 Locking Mechanism 62 Rotating Lever 64 Engaging Pin 65 Slide lever 68 Pressing portion 69 Buffer member

Claims (1)

[Claims] 1. An optical pickup that moves in a radial direction of a disc by a linear motor, and a slide member that is movable in the same direction as the movement direction of the optical pickup and that moves the optical disc between a recording / reproducing position and an eject position. A flexible substrate for connecting the optical pickup and a control circuit by attaching one end to an optical pickup and bending and folding the other end to a fixing member, and when the optical pickup moves, the folded curved portion of the flexible substrate is An optical disk player adapted to be displaced in the same direction as the moving direction of a pickup, wherein a displacement region of the curved portion of a flexible substrate and an operation region of the slide member are arranged in an overlapping manner, and at the time of ejecting, the curved portion is Press to push the optical pickup so that it is outside the operating range of the slide member Optical disc player being characterized in that provided integrally with the slide member.