JPH0437291Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a movable disk player that reproduces information signals by moving an optical disk relative to an optical pickup.

[Conventional technology]

Conventionally, an optical disc player has been used in which a recording track formed on an optical disc is irradiated with a laser beam, and the reflected beam is detected by a light detection means to read and reproduce information signals recorded on the optical disc. It is being

This type of optical disk player reads and reproduces information signals recorded on the optical disk by moving an optical disk and an optical pickup relative to each other in the radial direction of the optical disk, and tracking a recording track with a laser beam. However, among this type of players, a movable disk type player has been proposed in which an optical pickup is fixedly arranged and the side on which the optical disk is placed can be moved.

[The problem that the idea aims to solve]

By the way, in optical disc players including movable disc players, the optical disc is rotated at high speed. is chucked onto the turntable via the disc holder.

In order to reliably chuck the optical disk, it is necessary that the relative positions of the turntable and the disk holder be accurately positioned when the optical disk is mounted on the turntable. Especially in movable disc players,
When loading an optical disk, the turntable to be moved must be positioned at a predetermined initial position, that is, the lead-in position.

In addition, in optical disc players, including movable disc players, the laser beam is transmitted through the optical disc mounting section, so in consideration of laser beam safety measures, a lid body that closes off the optical disc mounting section is required. It is provided. Therefore, when the lid is opened, the laser beam can be transmitted to the outside of the player body. Therefore, for safety reasons, it is necessary to ensure that the laser beam does not leak outside the player body even when the lid is opened.

Therefore, the present invention makes it possible to reliably track an optical disk to a turntable in a movable disk player, and to
This was proposed for the purpose of providing a laser beam that can be reliably blocked in conjunction with the opening operation of the lid.

[Means to accomplish the task]

In order to achieve the above-mentioned objects, the present invention includes a lid body for opening and closing the disk storage section, an optical pickup fixedly arranged in the disk storage section, and a turntable on which an optical disk is placed and for rotating the optical disk. A table is attached to the turntable mounting plate, which is operated to move in the radial direction of the optical disk placed on the turntable, and a turntable mounting plate, which is rotated in conjunction with opening and closing of the lid, is attached to the turntable mounting plate. a rotary lever provided with a lock pin that engages with the formed locked portion; a shutter operation lever attached to the rotary lever so as to be rotatably biased; and a shutter operation lever that is moved and operated by the shutter operation lever to Equipped with a shutter that blocks the optical path of the optical pick-up,
When the rotary lever is rotated in conjunction with the rotation of the lid, the lock pin is engaged with a locked portion formed on the turntable mounting plate at the lead-in position, and the turntable is mounted on the turntable at the lead-in position. The arrangement is such that the placing plate is locked and the shutter is moved and operated by the shutter operating lever which rotates together with the rotating lever to interrupt the optical path of the optical pickup.

[Effect]

In the movable disc player according to the present invention, when the lid is rotated, the rotary lever is rotated to engage the lock pin with the locked portion formed on the turntable mounting plate at the lead-in position. Then, lock the turntable mounting plate. In conjunction with this locking of the turntable mounting plate, the shutter operating lever is rotated, and the shutter is moved by the shutter operating lever to interrupt the optical path of the optical pickup.

〔Example〕

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

The disc movable player according to the present invention has a first
As shown in the figure, on the top side of the player body 1, there are
A disk storage section 2 into which an optical disk is mounted is formed. The disc storage section 2 is opened and closed by a lid 3 rotatably supported by the player main body 1.

Furthermore, a pickup 4 including a laser light source is fixedly arranged within the disk storage section 2.
This optical pickup 4 has an objective lens 4A that focuses a laser beam on the optical disk surface, which is arranged in the disk storage section 2 so as to face the optical disk surface placed on the turntable 5. It is.

On one side of the optical pickup 4, there is disposed a turntable mounting plate 6 on which an optical disc is mounted and a turntable 5 for rotating the optical disc is rotatably attached. This turntable mounting plate 6 is guided by a guide rail (not shown) by a feed mechanism 70 driven by a drive motor (not shown) in which a connecting gear 71 is meshed with a rack gear 6A provided on one side. The optical disc placed on the turntable 5 is moved in the radial direction, which is the direction of arrows A and B in FIG. That is, the turntable mounting plate 5
is moved by the feed mechanism 70 in the direction of arrow A in FIG. The recording track formed on the optical disc is tracked by the laser beam emitted from the optical pickup 4 over the inner and outer peripheries, and the information signals recorded on the optical disc are read and reproduced.

Further, the turntable mounting plate 5 is interlocked with, for example, a stop button, and when this stop button is operated, it is moved in the direction of arrow B in FIG. 1 even if it is moved to an intermediate position. , it is possible to mount the optical disc at the initial position, and the optical disc is returned to the lead-in position, which is the initial position for reading information signals from the optical disc. and,
When the eject button is operated and the lid 3 is opened, the player is brought to a halt, so the turntable mounting plate 5 is returned to the lead-in position as described above.

As shown in FIG. 2, a shutter lever 7 is disposed within the player body 1 and has a shutter plate 7A at one end that blocks the optical path L of the laser beam emitted from the optical pickup 4. The shutter lever 7 is pivoted at its midpoint on a support shaft 8 installed on the top side of the optical pickup 4, and is mounted so as to be rotatable about the support shaft 8. The shutter lever 7 is moved clockwise in the direction of arrow C in FIG. is biased to rotate. The torsion coil spring 9 has one arm portion 9A locked to an upright piece 7D provided on one side of the other end of the shutter lever 7.
By locking the other arm portion 9B to a locking pin 10 set on the optical pickup 4 and being supported by the support shaft 8, the shutter lever 7 is urged to rotate in the direction of arrow C in FIG. ing. The rotationally biased position of the shutter lever 7 by the torsion coil spring 9 is regulated by a shutter operation lever 11 which rotates the shutter lever 7 against the biasing force of the torsion coil spring 9.

The shutter operation lever 11 is pivotally supported at its midpoint by the pivot lever 16 via a pivot shaft 12 . At one end of the shutter operating lever 11, an engaging piece 13 is bent and erected to abut and engage with a related coupling portion 7C provided at the other end of the shutter lever 7. Also. The shutter operation lever 11 has one end locked in a spring locking hole 11B drilled at the other end, and the other end is turned into a rotating lever 1.
6 is rotated about the pivot 12 in the direction of arrow D in FIG. The protruding engagement protrusion 11C is brought into contact with a locking protrusion 15 planted on the rotary lever 16, so that the rotational biasing position is regulated. By providing the shutter operation lever 11 in this manner, the rotational biasing position of the shutter lever 7, in which the associated coupling portion 7C is brought into abutting engagement with the engagement piece 13, is restricted.

Further, the rotary lever 16 on which the shutter operating lever 11 is pivotally supported has a midway portion pivotally supported on a pivot shaft 15A that is integrally formed with the locking protrusion 15 and is set on a chassis (not shown). It is rotatably supported around a support shaft 15A. and,
The tip of the first protruding piece 16A, which is one rotating end of the rotating lever 16, engages with the locked portion 61 of the turntable mounting plate 6 in the lead-in position, thereby allowing the turntable to be mounted. A lock pin 17 for locking the plate 6 is installed. This lock pin 1
7 protrudes into a long hole 18 formed in a chassis (not shown), and when the turntable mounting plate 6 is in the lead-in position shown in FIG.
is engaged with one end 18A side. Furthermore, a second projecting piece 1 which is the other rotating end of the rotating lever 16
A locking piece 19 bent and raised into an L-shape is provided at the tip of 6B. Furthermore, the rotary lever 16 is rotated around the pivot shaft 15A by a tension spring 20 stretched between a spring locking hole 16C formed in the middle of the first projecting piece 16A side and the chassis. It is urged to rotate clockwise in the direction of arrow E in Figure 2. The rotationally biased position by the tension spring 20 is regulated by the lock pin 17 being locked to one end 18A of the one direction 18.

The pivot lever 16 is pivoted against the biasing force of the tension spring 20 by a slide plate 22 that is moved and operated in conjunction with the opening and closing operations of the lid body 3. , the above slide plate 2
2 is a plurality of guide slots 23 drilled in the longitudinal direction.
A plurality of guide pins 24 installed on the chassis are inserted and engaged with each other, so that the guide pins 24 are supported so as to be movable only in the longitudinal direction of the guide elongated hole 23. The slide plate 22 has an L on one end side.
A locking piece 25 is formed by bending into a letter shape, and the locking piece 25 is connected to the rotating lever 16 by engaging with the locking piece 19 of the rotating lever 16. Further, on the other end side of the slide plate 22, a rotating piece 3B protruding from the base end side of the lid body 3 is provided.
A contact piece 26 that abuts and engages with a pressure roller 27 attached to one end of the contact member 26 is bent.

Here, to explain the arrangement positional relationship between the pressing roller 27 and the contact piece 26, in the initial state when the lid 3 is completely opened and the disk storage section 2 is opened, the lid is closed. , the pressure roller 2
7 and the abutting piece 26 are not brought into contact with each other yet, but the pressing roller 27 and the abutting piece 26 are brought into contact with each other by rotating the lid 3 further in the closing direction.

Then, when the lid 3 is further rotated in the lid closing direction around the support shaft 3A from the state in which the pressing roller 27 and the contact piece 26 are in contact with each other, the rotation of the lid 3 is accompanied by the rotation of the lid 3. The slide plate 22 is then pushed and moved in the direction of arrow F in FIG.

In addition, the slide plate 2 is normally urged to move in the direction of arrow G in FIG.
is attracted to the position where it engages with the

On the other hand, the turntable mounting plate 6 has, as described above, the lead-in position which is the initial position.
A lock pin 17 provided on the rotating lever 16
A locked portion 61 that engages with the turntable mounting plate 6 and restricts movement of the turntable mounting plate 6 in the direction of arrow A in FIG.
is formed. The outer surface 61A on the distal end side of the locked portion 61 is an inclined surface, and when the turntable mounting plate 6 is moved from the end position in the direction of arrow A in FIG. 1 in the direction of arrow B in FIG. In some cases, the lock pin 17 is connected to the locked portion 61.
When the lock pin 17 is forward in the direction of movement, the lock pin 17 is moved along the outer surface 61A on the distal end side. That is, the rotating lever 16 is rotated counterclockwise in the direction of the second arrow E against the tension spring 20, so that the lock pin 17 is surely engaged with the locked portion 61. There is.

In the movable disc player configured as described above, when the lid 3 is in the state shown in FIG. 2. It is placed in a state where it is pulled back to the end in the direction of arrow G in Figure 2. At this time, the rotation lever 16 receives the urging force of the tension spring 29 so that the lock pin 17 is pushed into the elongated hole 1.
8 to a position where it is locked to one end 18A. At this time, the lock pin 17 engages with the locked portion 61 of the turntable mounting plate 6, and fixes and holds the turntable mounting plate 6 at the initial position, that is, the lead-in position.

The shutter lever 7 is also supported by a torsion coil spring 9.
The shutter plate 7B is positioned above the objective lens 4A of the optical pickup 4 and the laser beam is The optical path L is blocked.

When the lid body 3 is in the open state in this way,
Since the turntable mounting plate 6 is accurately held at the lead-in position, the turntable 5 can be positioned, and the lid 3 for tracking the optical disc placed on the turntable 5 can be positioned. It becomes easy to accurately align the disk retainer 31 attached to the inner surface with respect to the turntable 5. Therefore, the chucking operation of the optical disk on the turntable 5 becomes reliable.
Accurate rotational operation of the optical disc can be guaranteed.

Further, since the shutter plate 7B is in a state where the optical path of the laser beam is blocked, it is possible to completely replace the optical disk.

After placing the optical disk on the turntable 5, when the lid 3 is rotated to close the disk storage section 2, the roller 27 comes into contact with the rotation of the lid 3. The slide plate 22 is moved in the direction of contacting the piece 26, and the slide plate 22 is moved in the direction of the arrow F in FIG. 1 against the biasing force of the pullback spring 28. As the slide plate 22 moves in the direction of arrow F in FIG.
2, the pivot lever 16 is rotated counterclockwise in the direction of arrow E in FIG. 2 about the pivot shaft 15A against the biasing force of the tension spring 20. As the rotary lever 16 rotates in the opposite direction of arrow E in FIG. 61, the turntable mounting plate 6 is unlocked, and the turntable mounting plate 6 becomes movable in the direction of arrow A in FIG.

Also, the opposite arrow E in FIG. 2 of the rotating lever 16
By pivoting in the direction, the shutter operating lever 11 pivoted to the pivot lever 16 also rotates in the pivot lever 1.
6 and rotated in the same direction. The shutter lever 7, in which the related coupling portion 7C is abutted and engaged with the engagement piece 13 of the shutter operation lever 11, is connected to the support shaft 8.
The shutter plate 7B is moved laterally from above the objective lens 4A of the optical pickup 4 in the opposite direction of the arrow C in FIG. The emitted laser beam is brought into a state where it can be irradiated onto the optical disk placed on the turntable 5.

In this way, the lid body 3 is closed, the turntable mounting plate 6 is unlocked, and the optical path L of the laser beam is
When the drive system (not shown) is operated with the optical pickup 4 opened, the turntable 5 starts rotating and the turntable mounting plate 6 starts moving in the direction of arrow A in FIG. Information signals recorded on the optical disk are read and reproduced by a laser beam emitted from the optical disk.

[Effect of idea]

As mentioned above, in the present invention, the turntable mounting plate is locked in conjunction with the opening operation of the lid body that opens and closes the disk storage section, and when the lid body is closed again, the turntable mounting plate is locked. The disc holder held by the body can be reliably dropped onto the turntable at an appropriate position, and the optical disc can be reliably chucked.

In addition, since the shutter plate is operated in conjunction with the opening operation of the lid body to block the optical path of the laser beam, it is possible to safely mount the optical disk onto the turntable.

Moreover, since the locking control of the turntable mounting plate and the moving operation of the shutter plate can be performed through one rotary lever, the configuration is simple, the operation is reliable, and the assembly process etc. is simplified. be done.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway external perspective view of a movable disk player according to the present invention, and FIG. 2 is a perspective view of the main parts thereof. 1...Player body, 2...Disc storage section,
3... Lid body, 5... Turntable, 6... Turntable mounting plate, 7... Shutter lever, 7B
... Shutter plate, 11 ... Shutter operation lever,
12... Rotating lever, 16... Rotating lever, 17
... Lock pin, 22 ... Slide plate, 61 ...
Locked part.

Claims (1)

[Scope of Claim for Utility Model Registration] A lid body for opening and closing the disk storage section, an optical pickup fixedly arranged in the disk storage section, and a turntable on which an optical disk is placed and for rotating the optical disk is attached, A turntable mounting plate that is operated to move in the radial direction of the optical disk mounted on the turntable, and a locking plate formed on the turntable mounting plate that is rotated in conjunction with opening and closing of the lid. a rotary lever provided with a lock pin that engages with the shutter; a shutter operating lever mounted on the rotary lever in a rotationally biased manner; and a shutter operating lever that is moved and operated by the shutter operating lever to control the optical path of the optical pickup. and a shutter for blocking the turntable, and when the rotary lever is rotated in conjunction with the rotation of the lid, a locking pin is inserted into a locked portion formed on the turntable mounting plate at the lead-in position. A movable disk player, wherein the shutter is engaged to lock the turntable mounting plate and the shutter is moved and operated by the shutter operating lever which rotates together with the rotating lever to interrupt the optical path of the optical pickup.