JPH04362563A - Recording/reproducing device - Google Patents

Abstract

PURPOSE:To prevent the free movement of a mechanical deck at the time of transporting, etc., despite the fact that a high vibration proof is exhibited during a recording and/or a reproducing. CONSTITUTION:Responding to the completion of the loading of an optical disk 12 a mechanical deck 1 is unlocked from a chassis 11, the mechanical deck 1 is switched to a floating condition where it is elastically supported on the chassis 11 via a rubber vibration insulator 2, etc., and also, responding to the unloading command signal of the optical disk 12 a locking device A is provided so as to lock the mechadeck 1 in an unmoving condition to the chassis 11.

Description

[Detailed description of the invention]

0001

FIELD OF THE INVENTION The present invention relates to a recording and reproducing device that is most suitable for application to, for example, a disk drive, and particularly relates to a floating system in which a mechanical deck for recording and/or reproducing a recording medium is elastically supported on a chassis. It is.

0002

2. Description of the Related Art Conventionally, as shown in FIG. 10, in a recording/reproducing device such as an optical disk device, a mechanical deck 1 is elastically supported within an outer casing 3 by three to four vibration-proof rubbers 2 serving as cushioning members. A floating method is adopted. Incidentally, a turntable 1d, an optical pickup and its feeding device, and a loading mechanism (none of which are shown) are attached to the upper part of the mechanical deck 1. Then, the optical disc 12 (or the cartridge 13 containing the optical disc 12), which is a recording medium, inserted into the disc insertion slot 3b provided on the front panel 3a of the outer casing 3 is taken into the outer casing 3 by the loading mechanism. and is loaded onto the turntable 1d. After the disc is loaded, the optical disc 12 is moved by the optical pickup that is sent in the radial direction of the optical disc 12 by the feeding device.
The recording and/or playback is performed. Further, after recording and/or reproduction, the optical disc 12 is unloaded by a loading mechanism so as to be taken out from the disc insertion slot 3b from the turntable 1d.

[0003] At this time, in order to prevent sound skipping due to external vibrations and shocks applied to the outer casing 3 during recording and/or playback, the vibrations and shocks are buffered by a vibration isolating rubber 2. to ensure vibration resistance.

0004

[Problem to be solved by the invention] However, mechanical deck 1
If the weight of the mechanical deck 1 is light, there is no problem with this method, but if the weight of the mechanical deck 1 becomes heavy, the resonance magnification of the mechanical deck 1 will increase even if the same anti-vibration rubber 2 is used. In order to keep this low, the compliance of the anti-vibration rubber 2 must be increased. That is, it is necessary to use vibration isolating rubber 2 that has a large displacement with respect to the load. When such a vibration isolating rubber 2 is used, there is a risk that the mechanical deck 1 will move significantly and be damaged by buffering against the outer casing 3 when a large disturbance is applied during transportation, etc. To prevent this, the outer casing 3 If the distance between the mechanical deck 1 and the mechanical deck 1 is increased, there is a problem in that the entire optical disc device becomes larger.

[0005] Furthermore, since the mechanical deck 1 is elastically supported within the outer casing 3 by the anti-vibration rubber 2, when the outer casing 3 is used with an incline, the mechanical deck 1 is supported against the disk insertion slot 3b of the outer casing 3. If the mechanical deck 1 becomes misaligned and the optical disc 12 is taken into the outer casing 3 from the disc insertion slot 3b during loading or when the optical disc 12 is taken out of the disc insertion slot 3b during unloading, the optical disc 12 may shift from the disc insertion slot 3b. There was a problem in that the optical disc 12 could not be loaded or ejected smoothly if it was caught on the surrounding area or collided with it.

The present invention was made to solve the above problem, and although it can exhibit high vibration resistance during recording and/or playback, it does not allow mechanical deck freedom during transportation. It is an object of the present invention to provide a recording/reproducing device that can prevent motion.

[0007]

[Means for Solving the Problems] To achieve the above object, the recording and reproducing apparatus of the present invention includes a mechanical deck for recording and/or reproducing a loaded recording medium, and a mechanical deck that is elastically connected to the mechanical deck through a buffer member. and the mechanical deck is locked in an immovable state relative to the chassis in response to an unloading command signal for the recording medium, and the mechanical deck is unlocked in response to a loading completion signal for the recording medium. It is equipped with a locking device.

[0008]

[Operation] In response to the completion of loading of a recording medium, the recording/reproducing apparatus of the present invention configured as described above releases the lock of the mechanical deck from the chassis by the locking device, and elastically attaches the mechanical deck to the chassis via the buffer member. Switch to a floating state with support. Further, in response to the recording medium unloading command signal, the mechanical deck is immovably locked relative to the chassis by the locking device.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an optical disc device will be described below with reference to FIGS. 1 to 9. In addition, Figure 10
The same reference numerals are given to the same structural parts as in the figure, and redundant explanation will be omitted.

First, an overview of the optical disc device will be explained with reference to FIG. A box-shaped chassis 11 with an open top is fixedly installed inside an outer casing 3, and a mechanical deck 1 is elastically supported inside the chassis 11 by a plurality of vibration-proof rubbers 2 and tension coil springs 6, which are cushioning members. There is. A locking device A locks the mechanical deck 1 immovably relative to the chassis 11 or releases the lock from the chassis 11.
It is located within 1.

[0011] Then, the optical disc 12 (or the cartridge 13 into which the optical disc 12 is inserted), which is a recording medium, is inserted into the disc insertion slot 3b of the outer casing 3 and inserted into the mechanical deck 1.
When loading, the mechanical deck 1 is immovably locked relative to the chassis 11 by the locking device A, and the locking device A is unlocked in response to a loading completion signal. Then, move Mecha Deck 1 to Chassis 1.
The optical disc 12 is recorded and/or reproduced in a floating state in which the optical disc 12 is elastically supported by a plurality of anti-vibration rubbers 2 and tension coil springs 6, and the outer casing 3 is By buffering external vibrations, impacts, etc. with the plurality of anti-vibration rubbers 2, etc., it is possible to prevent sound skipping, etc. due to the vibrations, impacts, etc. mentioned above.

Next, when unloading the optical disc 12 from the mechanical deck 1 to the disc insertion slot 3b, the lock device A is activated in response to the unloading command signal.
This locks the mechanical deck 1 immovably relative to the chassis 11. Then, the optical disc 12 is smoothly unloaded into the disc insertion slot 3b while the mechanical deck 1 is completely prevented from being displaced relative to the chassis 11 and the outer casing 3.

Even when the optical disk device is not in use, such as during transportation, the locking device A locks the mechanical deck 1 into the chassis 11.
It remains locked in an immovable state.

Next, referring to FIGS. 2 to 8, the lock device A
Explain the details.

First, the mechanical deck 1 (the area surrounded by diagonal lines) is attached to the chassis 11 by interposing four vibration isolating rubbers 2 as cushioning members. If this were done alone, the mechanical deck 1 would shift downward (downward in FIG. 3) due to its own weight, so the neutral state is maintained by suspending the mechanical deck 1 with four tension coil springs 6, which are buffer members.

Next, a locking motor 4 which is a driving source of the locking device A, a partially toothed gear 7 and a cam gear 8 which are stacked vertically and which are rotationally driven by the motor 4, and a locking plate 9 are provided.
etc. are mounted on the chassis 11.

[0017]The locking device A has a mechanical deck 1.
A slide plate 10 is used which is bent upward in a substantially U-shape from the bottom to both sides. This slide plate 10 has elongated holes 10f and 10c in four guide pins 11a installed horizontally inside the left and right side plates 11A of the chassis 11 and four guide pins 11b installed vertically on the bottom plate 11B of the chassis 11, respectively. mated by. Therefore, this slide plate 10 is configured to be horizontally movable relative to the chassis 11 in the directions of arrows C and D, which are parallel to the X direction shown in FIGS. 2 and 3.

Next, the lock device A has four horizontal guide pins 1a attached to both left and right sides of the mechanical deck 1.
By drawing the two vertical guide pins 1b into the narrow portions of guide holes 10a and 10b, which are four and two Daruma holes, respectively, provided in the slide plate 10, the mechanical deck 1 is moved relative to the chassis 11 in FIG. and Figure 3
It is locked in an immovable state in the Y direction and Z direction shown in . The locking device A also connects the guide pin 1c vertically attached to the lower part of the mechanical deck 1 to the notch 9b of the locking plate 9.
By drawing the mechanical deck 1 into the chassis 11, the mechanical deck 1 is locked in an immovable state in the X direction in FIGS. 2 and 3.

Next, the operation of the locking device A will be explained. First, when unloading the optical disc 12, the outer casing 3
When an eject switch (not shown) attached to the front panel 3a of the locking motor 4 is pressed and an unloading command signal is output, the locking motor 4
rotates and rotates the gear 5 fixed thereto, thereby causing the partially toothed gear 7 and the cam gear 8 superimposed on it to rotate.
simultaneously rotate in the direction of arrow E. And toothless gear 7
The slide plate 10 is moved in the direction of arrow C in FIG. 2 by the rotation. That is, a pin 7a is fixed to the partially toothed gear 7, which is fitted into an elongated hole 10d of the slide plate 10 to convert rotational force into linear force. When the slide plate 10 moves in the direction of arrow C in FIG. 2, the guide holes 10a and 10b provided in the slide plate 10 change from (A) to (B) in FIG. That is, the four guide pins 1a and the two guide pins 1b fixed to the mechanical deck 1 are connected to the narrow width portions of the four guide holes 10a and the two guide holes 10b provided in the slide plate 10, respectively. It is called in from the direction, and the Y and Z directions of the mechanical deck 1 are locked.

As shown in FIGS. 7 and 8, the partially toothed gear 7 has teeth of only about 180°, and the partially toothed gear 7 rotates about 180° in the direction of arrow E, as shown in FIG. When the state of A) changes to the state of (B), the partially toothed gear 7 is disengaged from the gear 5, and the partially toothed gear 7 no longer rotates. The cam gear 8 has teeth all around it and can rotate approximately 360 degrees. A cam groove 8b as shown in FIG.
is inserted. The lock plate 9 rotates in the directions of arrows G and H in FIG. 8 about the fulcrum shaft 11c. That is,
By rotating the cam gear 8 approximately 360° in the direction of arrow E, the lock plate 9 changes from the state shown in FIG. 8(A) to the state shown in FIG. 8(B).
The guide pin 1c fixed to the mechanical deck 1 is drawn into the notch 9b of the lock plate 9, and the mechanical deck 1 is locked in the X direction in FIGS. 2 and 3. Here, the slide plate 10 is moved in the direction of arrow C in FIG. 2 to lock the mechanical deck 1 in the Y and Z directions, and then the lock plate 9 is rotated to lock in the X direction. The cam groove 8b in the first approximately 1
The lock plate 9 is cut so as not to rotate between 80 degrees. That is, the lock plate 9 does not rotate while the partially toothed gear 7 is rotating from the state shown in FIG. The lock plate 9 is rotated.

Therefore, in response to the unloading command signal, the locking device A locks the mechanical deck 1 immovably relative to the chassis 11 in all directions of X, Y, and Z. After the lock plate 9 locks the guide pin 1c, the switch (or sensor) 14 is operated by the protrusion 9c of the lock plate 9, a lock completion signal of the mechanical deck 1 is output, and the motor 4 is stopped.

Then, in response to this lock completion signal, a loading mechanism (not shown) enters an unloading operation, and the optical disc 12 is unloaded from the mechanical deck 1 to the disc insertion slot 3b of the outer casing 3.

Next, when loading the optical disc 12, the optical disc 12 inserted into the disc insertion slot 3b of the outer casing 3 is loaded onto the mechanical deck 1 by the loading mechanism, and a loading completion signal is output from a switch (or sensor, not shown). Then, the locking motor 4 rotates in the opposite direction to that during unloading, first rotating the cam gear 8 in the direction of arrow F from (B) in FIG.
Rotate the lock plate 9 in the direction of arrow H to remove it from the guide pin 1c, and release the lock of the mechanical deck 1 in the X direction. This operation takes place during a rotation of approximately 180°, and this intermittent gear 7 does not rotate.

The pin 8a protruding from the cam gear 8 is inserted into a groove 7b cut on the lower surface of the partially toothed gear 7, and when the cam gear 8 rotates approximately 180° counterclockwise, the pin 8a shown in FIG.
), and from this moment the cam groove 8 and partially toothed gear 7 begin to rotate in the direction of arrow F. Therefore, the end surface 7 of the pin 8a and the groove 7b
The positional relationship with c must be set so that the gears 5, cam gear 8, and partially toothed gear 7 mesh well. The slide plate 10 is moved in the direction of arrow D in FIG. 2 during a period of 180° after the cam gear 8 and the toothless gear 7 begin to rotate together in the direction of arrow F, and the mechanical deck 1 is locked in the Y and Z directions. Release.

Therefore, in response to the loading completion signal, the mechanical deck 1 is unlocked in all X, Y, and Z directions by the locking device A, and the mechanical deck 1 is secured to the chassis 11 by the plurality of anti-vibration rubbers 2 and tension coil springs 6. is switched to a floating state where it is elastically supported against
The mechanical deck 1 becomes resistant to vibrations. and,
As shown in FIG. 2, the switch (or sensor) 15
is operated, a lock release completion signal for the mechanical deck 1 is output, and the motor 4 is stopped.

Note that the coil spring 16 shown in FIG. 7 is a coil spring suspended between the pin 7a of the partially toothed gear 7 and the spring locking portion 10h of the slide plate 10, and the cam gear 8 and partially toothed gear 7 are integrated. When rotating in the direction of arrow E, the groove 7b
The end surface 7c of is pressed against the pin 8a by the spring force of the coil spring 16 to prevent play between the cam gear 8 and the partially toothed gear 7,
This is to ensure that both gears 7 and 8 mesh well with gear 5.

Furthermore, the four pins 11a fixed to the chassis 11 in FIG. 2 (not shown, but there are also two pins facing each other) are connected to the four guides provided on the slide plate 10 as shown in FIG. The slide plate 10 is inserted into the hole 10f for
The two pins 11b fixed to the chassis 11 also control the movement of the slide plate 1 in the Z direction.
The slide plate 10 is inserted into two guide holes 10c provided in the slide plate 10 to restrict movement of the slide plate 10 in the Y direction.

FIG. 9 shows a modified example of a cam gear 17 in which the partially toothed gear 7 and the cam gear 8 are integrated.The operating mechanism of the lock plate 9 is the same as that described above, but the sliding plate 10 This movement is performed by the cam groove 17a similarly to the lock plate 9. 10 g of pins fixed to the slide plate 10
is inserted into a cam groove 17a cut on the upper surface of the cam gear 17, and the slide plate 10 is moved by rotation of the cam gear 17.

Although one embodiment of the present invention has been described above,
The present invention is not limited to the above embodiments, and various modifications can be made based on the technical idea of the present invention.

Furthermore, the present invention is not limited to the optical disc apparatus shown in the above embodiments, but is applicable to various recording and reproducing apparatuses for recording and/or reproducing various recording media.

[0031]

[Effects of the Invention] Since the recording/reproducing apparatus of the present invention is constructed as described above, it has the following effects.

[0032] In response to completion of loading of the recording medium,
Since the locking device releases the mechanical deck from the chassis and switches the mechanical deck to a floating state where it is elastically supported by the chassis via a buffer member, vibrations and shocks applied from the outside during recording and/or playback can be avoided. This makes it possible to prevent sound skipping and the like, and to exhibit high vibration resistance during recording and/or playback.

Since the mechanical deck is immovably locked with respect to the chassis by the locking device in response to the unloading command signal of the recording medium, there is no relative displacement of the mechanical deck with respect to the chassis and the outer casing. In this state, loading and unloading of recording media can always be performed smoothly. Also, during transportation, etc.
It is possible to prevent the mechanical deck from moving significantly relative to the chassis or outer casing and colliding with them, thereby causing damage.

[Brief explanation of drawings]

FIG. 1 is a perspective view illustrating an overview of an optical disc device to which the present invention is applied.

FIG. 2 is a plan view of the same as above.

FIG. 3 is a side view of the same as above.

FIG. 4 is a perspective view of the main parts showing the locking structure of the mechanical deck in the Y and Z directions.

FIG. 5(A) is a side view showing the same as the above in an unlocked state, and FIG. 5(B) is a side view showing the same as the above in the locked state.

FIG. 6 is a perspective view of essential parts showing the locking structure of the mechanical deck in the X direction.

FIG. 7(A) is a plan view of the partially toothed gear and the slide plate in a backward moving state, and FIG. 7(B) is a plan view of the partially toothed gear and the slide plate in the forward moving state.

FIG. 8(A) is a plan view of the cam gear and the lock plate in a backward movement state, and FIG. 8(B) is a plan view of the cam gear and the lock plate in the forward movement state.

FIG. 9 is a plan view showing a modification of the cam gear.

FIG. 10 is a perspective view showing a conventional optical disc device.

[Explanation of symbols]

A Lock device 1 Mechanical deck 2 Anti-vibration rubber (buffer member) 3 Outer casing 4 Lock motor 6 Tension coil spring (buffer member) 9
Lock plate 10 Slide plate 11 Chassis 12 Optical disk (recording medium) 14, 15 Switch

Claims (1)

[Claims] Claim 1: Recording and/or recording of the loaded recording medium.
or a mechanical deck to be reproduced, a chassis elastically supporting the mechanical deck via a buffer member, and locking the mechanical deck in an immovable state relative to the chassis in response to an unloading command signal of the recording medium; A recording and reproducing apparatus comprising: a locking device that unlocks the mechanical deck in response to a medium loading completion signal.