JPH0429141B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a continuous drive device for disc-shaped recording media that continuously records and reproduces data on and from a plurality of disc-shaped recording media.

[Prior Art] Conventionally, as a disc-shaped recording medium, there is, for example, an audio compact disc. However, with conventional audio compact discs, it has been impossible to continuously record on or reproduce data from a plurality of disc-shaped recording media.

[Problems to be Solved by the Invention] The present invention has been made to solve these problems, and provides a disc-shaped recording medium that can continuously record and reproduce information on a plurality of arbitrary disc-shaped recording media. This paper proposes a continuous drive device.

[Means for Solving the Problems] The present invention provides an apparatus for recording or reproducing information on a rotating disc-shaped recording medium, which includes a plurality of rocking plates in which mounting recesses for the disc-shaped recording medium are formed. The first shaft is attached to one end of the oscillating plate as a structure for selecting one of the plurality of oscillating plates and controlling the oscillation between the non-operating position and the operating position. A gear part is provided with the gear part at the center, and is supported by a second shaft that meshes with the gear part, and is engaged with the gear part provided at one end of the rocking plate by moving in the longitudinal direction of the second shaft. A rocking plate selection mechanism provided with matching gears, and a structure in which the rocking plate moves up and down between a rising end for rotationally driving the disk-shaped recording medium of the rocking plate located at the operating position and a falling end when not driven. A lifter equipped with a clamp that holds a shaped recording medium, and two gears of the same diameter each having an arm that holds a pin that rotatably engages with the lifter are always kept in mesh, and the two gears are The invention is characterized in that each shaft holding the lifter is provided with an elevating mechanism having a gear holding a pin on the two arms having a common axis at the other end of the shaft with the lifter in between.

[Operation] According to the present invention, information can be selectively and continuously recorded on and reproduced from a plurality of disc-shaped recording media.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a reproducing apparatus (compact disc player) using an audio compact disc (hereinafter simply referred to as a disc) as a disc-shaped recording medium. In the figure, reference numeral 1 denotes a disk mounting part where a plurality of swing plates 2a to 2f are assembled, and the first swing plate 2a to the sixth swing plate 2f are mounted on a common support shaft 3, and each of the above swing plates is mounted on a common support shaft 3. Moving plate 2a-2
Each of f is adapted to be swung one by one in the direction of arrow A by a swiveling mechanism which will be described later. Also,
In the front part of each of the swing plates 2a to 2f are circular shallow recesses 4a to 4 in which the disks 30 shown in FIG. 3 are mounted.
4f are respectively formed, and each recess 4a to 4 is further formed.
A U-shaped notch 6 having a notch width W ₁ is bored from the center to the side of each f. An elevating mechanism is provided for elevating a lifter 7 formed to have a width W ₂ with respect to this notch 6, and is configured to move the disk 30 up and down. Reference numeral 8 denotes a clamp having a recess on its upper surface, which is attached to the lifter 7, and this clamp 8 is elastically loaded by a spring 9. 10
is a plate provided on the main body of the apparatus in correspondence with the clamp 8, with each of the rocking plates 2a to 2f spaced apart from each other at an intermediate position after rocking; A turntable 12 is provided, which is positioned on a line (dotted chain line G in FIG. 1), and a portion that fits into the recess of the clamp 8 is formed on the lower surface of the turntable 12. The optical pickup 11 irradiates the disk 30 with a laser beam and photoelectrically converts the reflected light to reproduce the recorded data.A rack 13 is fixed to one side of the optical pickup 11. The pinion 14 is in mesh.
This pinion 14 is rotated by a feed motor 15 installed above it, and furthermore, the rack 1
3, the optical pickup 11 is caused to reciprocate in the direction of arrow C along a pair of parallel guide rods 10a and 10b. Note that the guide rods 10a, 10b are connected to two pairs of guide holders 10c, 10d and 10e, 10 fixed to the back surface of the plate 9.
It is supported by f. On the other hand, a disk motor 16 is attached to the turntable 12, and the disk 30 is moved by the action of the raised clamp 8.
It is configured so that it can be rotated while being held between the two. FIG. 2 illustrates the vertical positional relationship of these parts.

Next, the operation will be described. First, the disks 30 are mounted in the recesses 4a to 4f of each of the swing plates 2a to 2f, with the signal side facing up, as shown in FIGS. 3 and 4. When playing the disc 30, when the lifter 7 is raised, the lifter 7 lifts the disc 30 as shown in FIG. is compressed, and the disc 30 is held between the clamp 8 and the turntable 12 by its elastic force. In this state, disk motor 1
6 rotates, the disk 30 rotates accordingly, and the optical pickup 11 is moved in the direction of arrow C by the feed motor 15 to reproduce recorded information on the disk 30. After regeneration, the lifter 7 descends together with the disk 30 and returns to the state shown in FIGS. 3 and 4. Next, the other rocking plate,
For example, to regenerate the disk 30 on the rocking plate 2c, after returning the rocking plate 2a, swing the rocking plate 2c to stop it at a predetermined position as shown in FIG. Then, the disc 30 is played back.

Furthermore, the mechanism for driving the disk mounting section 1 will be described in detail with reference to FIG. As is clear from the figure, 17a to 17f are gears formed on the outer periphery of the pivot side of the swing plates 2a to 2f, and these gears 17a to 17f are
A gear 19a inserted through the shaft 18 so as to be able to move up and down is selectively engaged with one of the gears 17f. A gear 20 fixed to the lower end of the shaft 18 meshes with a worm gear 21, and the rotation of a motor 22 swings the worm gear 21 and the swinging plate 2a meshed with the gear 19a. . The gear 19a is integrally formed with a flange 19b spaced at a predetermined distance below the gear 19a, and an engaging portion 23a having a U-shaped tip is formed at this space.
The elevating member 23 is engaged via. Reference numeral 24 denotes a threaded shaft to which the elevating member 23 is screwed, and a gear 25 attached to the lower end of this shaft rotates via a worm gear 27 rotated by a motor 26, so that the elevating member 23 is raised and lowered, and the gear 19a is rotated. is moved up and down to select and swing one of the swing plates 2a to 2f.

Therefore, when one of the rocking plates 2a to 2f is rocked, the worm gear 2 is rotated by the rotation of the motor 26.
7. Rotate the screw shaft 24 via the gear 25,
The lifting member 23 is moved up and down in the direction of arrow D or E. Due to this operation, the rocking plates 2a~
Gear 19a that selects and drives one of 2f.
The gear 17a moves up and down according to the amount of rotation of the motor 26.
It will mesh with any one of ~17f. Gear 19a is one selected gear, for example gear 17
When meshing with a, the motor 26 stops, and
The worm gear 21 is driven by the rotation of the motor 22.
The gear 20, the shaft 18, and the gear 19a are rotated, and the rotation of the gear 19a causes the swinging plate 2a to swing in the I direction about the shaft 3 via the selected gear 17a. Motor 22 at this time
The swing plate 2a is rotated to a predetermined position by a predetermined amount of rotation.

Next, disk 3 mounted on disk mounting section 1
The elevating mechanism for elevating and lowering 0 will be explained based on FIGS. 9A and 9B. 7a is the main body of the lifter 7, this main body 7a is bent on both sides, and this main body 7a is bent.
are similarly arranged so as to move up and down within the bent bases 7b on both sides. 28a and 29 are gears of the same diameter that mesh with each other, and shafts 31 and 3 are attached to the side of the base 7b.
It is attached by 2. This shaft 31, 32
Gears 29 and 29 having the same diameter as the gears 28a and 29 are attached to the other end in a mutually meshed state. Reference numeral 33 denotes a lever extending from each of the gears 28a, 29, the tip of which is attached to the side edge of the main body 7a by a pin 34. 2 more
Reference numeral 8b denotes a gear that is formed integrally with the gear 28a and shares a common axis, and this gear 28b is configured to be rotated by a worm gear 36 of a motor 35 provided on one side of the base 7b.

When the motor 35 rotates by a predetermined amount, the other gears 29, 29, 29 simultaneously rotate via the worm gear 36 and gears 28b and 28a.
As a result of this rotation, each lever 33 extending from the gear 28a and each gear 29 is moved to the shaft 31, 32.
When the lever rotates around , the main body 7a attached to the tip of the lever moves up and down along with this rotation, thereby raising and lowering the lifter 7.

Further, FIG. 10 shows a drive control mechanism for the disk mounting section 1 and the elevating mechanism. In the same figure, 37 is the rocking plate 2a in the non-operating position.
-2f, and 38 is a swinging plate that has swung to the playback position, for example, as shown in the same figure, a second switch that detects that the swinging plate 2a is at the swinging end. is also connected to the microprocessor 39. The motors 22 and 26 in the drive mechanism for rotationally driving the swing plates 2a to 2f are connected to the microprocessor 39, and the motors 22 and 26 are connected to the microprocessor 39, and the motors 22 and 26 are controlled based on the detection signals of the first and second switches 37 and 38. is adapted to rotate or stop. Furthermore, 40 and 41 are third and fourth switches for detecting the lowering end and the ascending end of the lifting mechanism, respectively.
1 is connected to a microprocessor 39 like the first and second switches 37 and 38, and the motor 35 in the lifting mechanism is rotated or stopped based on the detection signal thereof. Furthermore, 42 is a switch panel equipped with buttons for selecting each operation of recording and reproduction, and each of the above-mentioned mechanisms is operated in accordance with the selection operation of the switch panel 42.

Next, the operation of each of the above-mentioned mechanisms as well as the operation of the control mechanism will be explained. When either playback or recording is selected using the button on the switch panel 42, the microprocessor 39 operates in response to this selection operation. In other words, either recording or reproduction is selected after making a judgment using each of the swing plates 2a to 2f. When this selection operation is completed, the oscillating plate to be selected, for example, oscillating plate 2a, is selected in accordance with a command from the microprocessor 39, and the motor 26 rotates a predetermined amount to move the gear 19a from the initial position to the oscillating plate. 2
a and meshes with gear 17a. Subsequently, the gear 19a is rotated by a predetermined amount of rotation of the motor 22, thereby swinging the swing plate 2a to the state shown by the imaginary line in FIG. When the swing plate 2a comes to a predetermined operating position, the second switch 38 contacts and detects it, and sends a detection signal to stop the motor 22. When the swing plate 2a stops, a command to start the motor 35 is sent, and when the lifter 7 is raised to the upper end, the fourth switch 4
1 detects the rising end and stops the motor 35. At this time, the lifter 7 clamps the turntable 12 and the disk 30 located above it as shown in FIG. After recording and reproducing operations are performed in this clamped state, the microprocessor 39 commands the motor 35 to rotate in the reverse direction to lower the lifter 7, and when the lifter 7 reaches the lowering end, it is lowered. The third switch 40 detects this and transmits this detection signal to stop the motor 35. Furthermore, when the microprocessor 39 sends a rotation command to the motor 22, the swing plate 2a returns to the non-operating position from the state shown by the imaginary line. Then, the first switch 37 contacts this and sends a stop signal to stop the motor 22. moreover,
The microprocessor 39 then rotates the motor 26 to the position of the selected rocking plate, for example rocking plate 2b, and moves the gear 19a to the gear 17b of the rocking plate 2b.
The above-mentioned series of operations are repeated to record on or reproduce from the disk 30. The selection order of the disks 30 at this time can be determined by the switch panel 42. The above series of operations is shown in the flowchart in the 11th
Figures A and B.

Note that when the disk 30 is not mounted on a predetermined rocking plate, the microprocessor 39 is configured so that a detector attached to the recess detects this and prohibits the next series of operations. be able to.

Further, FIG. 13 is a diagram showing another embodiment in which the clamp 8 and the turntable 12 are arranged upside down, and even with such a configuration, the same functions and effects as described above can be obtained.

As described above, the playback device according to the present invention can play the disks 30 by swinging an arbitrary rocking plate, and since the rocking plate can be selected arbitrarily, a plurality of disks can be played in any order. can be played. Further, it is not necessary to mount a disk in the recess of each rocking plate, and when there is only one disk, the player operates in the same manner as a normal compact disk player. Furthermore, each of the recesses 4a to 4f may be provided with disk detection means (such as a photoelectric switch) to detect the presence or absence of a disk and used for controlling the swinging mechanism of the swinging plate, warning the user, etc.

FIG. 12 shows the appearance of an embodiment of the compact disc player according to the present invention.
That is, the table unit 44 can be pulled out from the entire surface of the player 43 and a disk can be mounted thereon. This table unit 44 may be removed from the main body of the apparatus to load and remove the disk, or the table unit 44 containing the disk may be removed from the main body of the apparatus.
may be stored.

In the embodiment, there are six rocking plates, but the number can be any number of two or more. In addition to the mechanism in which the disk is lifted by the clamp 8, as shown in FIG. 13, the clamp 8 may be positioned above and the disk motor 16 and optical pickup 11 may rise to lift the disk; in this case, The signal side of the disk faces downward. Furthermore, in the embodiments of the present invention, the disk is an audio compact disk.
In addition, the same effect as described above can be obtained even when the disk-shaped recording medium is a magneto-optical disk, an optical video disk, or the like.

[Effects of the Invention] As explained above, according to the present invention, there is provided a mounting portion that pivotally supports a plurality of rocking plates in which mounting recesses for disc-shaped recording media are formed on the same axis, and a plurality of rocking plates that are As a structure for selecting one of the two gears and controlling the rocking between the non-operating position and the working position, a gear part centered on the first shaft is provided at one end of the rocking plate, and a second gear part meshing with the gear part is provided at one end of the rocking plate. a rocking plate selection mechanism having a gear supported on a shaft of the second shaft and engaging a gear portion provided at one end of the rocking plate by moving in the longitudinal direction of the second shaft; The structure includes a lifter equipped with a clamp that holds the disc-shaped recording medium, and a lifter equipped with a clamp that holds the disc-shaped recording medium; Two gears of the same diameter each having an arm holding a pin that freely engages are always held in a meshed state, and each shaft holding the two gears is provided with the lifter in between and the other shaft is Since it is equipped with an elevating mechanism that has gears holding pins on the two arms that share a common axis at the ends, it is possible to continuously record and reproduce multiple arbitrary disc-shaped recording media. There is a remarkable effect that it can be done.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the main parts of a continuous device for disk-shaped recording media of the present invention, FIG. 2 is a sectional view of FIG. 1,
Fig. 3 is a view equivalent to Fig. 1 showing the state in which the disk is mounted, Fig. 4 is a sectional view of Fig. 3, Figs. 5 to 7 are sectional views and perspective views explaining the operation, and Fig. 8 is a a perspective view of a rocking mechanism that rocks a selected rocking plate;
9A and 9B are perspective views and front views of the elevating mechanism; FIG. 10 is a wiring diagram showing the electric circuit that controls the selection mechanism, the swinging mechanism, and the elevating mechanism of the continuous drive device;
1A and 1B are flowcharts showing the operation of the microprocessor, FIG. 12 is a perspective view of a compact disk player, and FIG. 13 is a sectional view of main parts showing another embodiment. In the figure, 1 is a disk mounting part, 2a to 2f
4a to 4f are rocking plates, 4a to 4f are recesses, 7 is a lifter, 8 is a clamp, 12 is a turntable, 16 is a disk motor, 30 is a disk, 37, 38, 40,
41 is the first to fourth switches (detectors), 39 is a microprocessor, and 42 is a switch panel. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] 1. In an apparatus for recording or reproducing information on a rotating disc-shaped recording medium, a plurality of rocking plates in which mounting recesses for the disc-shaped recording medium are formed are pivotally supported on the same axis. A gear part centered on the first axis is provided at one end of the oscillating plate as a structure for selecting the mounting portion and one of the plurality of oscillating plates and controlling the oscillation between the non-operating position and the operating position. A rocker is provided with a gear that is rotatably supported by a second shaft that meshes with the gear portion, and that engages with a gear portion provided at one end of the rocker plate by moving in the longitudinal direction of the second shaft. a moving plate selection mechanism; and a clamp for holding the disc-shaped recording medium, the structure of which moves up and down between a rising end for rotationally driving the disc-shaped recording medium of the oscillating plate located at the operating position and a descending end when not driven. A lifter equipped with a lifter and two gears of the same diameter equipped with an arm holding a pin rotatably engaged with the lifter are always held in mesh, and each shaft holding the two gears is A continuous drive device for a disc-shaped recording medium, characterized in that it is equipped with an elevating mechanism having a gear holding a pin on the two arms having a common axis at the other end of the shaft with the lifter in between. . 2. First and second detectors are disposed at the non-operating position and the operating position of the oscillating plate, respectively, and the driving of the oscillating control mechanism is stopped based on the detection signal of each detector. A continuous drive device for a disc-shaped recording medium according to claim 1. 3. A patent claim characterized in that third and fourth detectors are disposed at the ascending end and descending end of the elevation control mechanism, respectively, and the drive of the elevation control mechanism is stopped based on the detection signal of each detector. A continuous drive device for a disc-shaped recording medium according to item 1 or 2. 4 Connecting the swing control mechanism, the elevation control mechanism, and the first to fourth detectors to a microprocessor,
A continuous drive device for a disc-shaped recording medium according to any one of claims 1 to 3, characterized in that the drive of the mounting section is controlled.