JPH0333992Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention provides a spindle motor for a first disk, such as a compact disk, which has different driving rotation speeds, a spindle motor for a second disk, such as a video disk, and a spindle motor for a second disk such as a video disk. The present invention relates to an improvement of a disk compatible player in which an optical or capacitive pickup for reading information recorded on both disks is arranged on the same straight line.

``Prior Art'' In the disk compatible player as described above, when playing the second disk, it is necessary to move the spindle motor for the first disk to a position where it does not interfere with the pickup operation. Therefore,
Conventionally, there have been disk compatible players of this type as shown in FIGS. 3 and 4.

In the drawings, A is a fan-shaped gear, and this fan-shaped gear A is rotatably supported by a bearing C fixed to a player base B. Also, fan-shaped gear A
A first disk spindle motor E for driving a first disk, such as a compact disk, is fixed vertically to a mounting plate D which is horizontally bent and protrudes from the tip of the disk. , A first disk turntable F on which a first disk is placed is fixed to the rotating shaft of the spindle motor E. G is a drive gear that meshes with the sector-shaped gear A, and this drive gear G is rotatably connected to a standing plate H that stands upright from the player base B. I is a large pulley fixed coaxially with the drive gear G, J is a moving motor fixed to the above-mentioned vertical plate H, and the pulley K fixed to the rotating shaft of this motor J is connected to the large pulley I mentioned above. A belt L is hung between them.

M is a spindle motor for a second disk such as a video disk;
It is fixed to the player base B at a distance greater than the radius of the first disk from the disk spindle motor E. Further, a second disk turntable N on which the second disk is placed is fixed to the rotating shaft of the second disk spindle motor M.

O is an optical or capacitive pick-up for reading the recorded information on the first disk and the second disk, and this pick-up O is located on the side of the spindle motor E for the first disk and the spindle motor M for the second disk. It is slidably attached to a guide bar P that is horizontally suspended along the player base B. In addition, the above pick-up O is
The second disk is connected via the first disk spindle motor E.
It is located on the opposite side of the disk spindle motor M.

Here, the center of the rotation axis of the first disk spindle motor E, the center of the rotation axis of the second disk spindle motor M, and the center of the pickup O are arranged on the same straight line X. .

Next, the effect will be explained.

First, when playing the first disk, the third
As shown in the figure, the first disk spindle motor E is placed in a vertical position, the first disk is placed on the first disk turntable F, and the first disk spindle motor E rotates the first disk. On the other hand, the pickup O reproduces the information recorded on the first disk by tracing the back surface of the first disk along the guide bar P.

Next, the case of reproducing the second disk will be explained with reference to FIG. First, when the moving motor J is rotated, this rotational force is transmitted to the drive gear G via the belt L, and rotates the fan-shaped gear A toward the front in the drawing. As a result, the first disk spindle motor E is tilted so that its rotating shaft is horizontal, and is moved to a position where it does not interfere with the movement of the pickup O.

Therefore, the second disk is placed on the turntable N for the second disk, and rotated by the spindle motor M for the second disk. On the other hand, the pickup O reproduces the information recorded on the second disk by tracing the back surface of the second disk along the guide bar P.

``Problems to be Solved by the Invention'' Conventional disk compatible players are configured as described above, so when playing back the second disk, the first disk spindle is In order to move the motor E from the operating line of the disk pickup O, a dedicated moving motor J and an electric circuit for driving this motor J are required. Therefore, there are drawbacks such as a large number of parts, complicated wiring, and high cost.

The present invention has been made to solve the above-mentioned drawbacks, and is configured so that the spindle motor is moved to a predetermined position by the driving force of the first disk spindle motor, thereby reducing the number of parts. It is an object of the present invention to provide a disk compatible player that has fewer electrical circuits and is simplified.

"Means for Solving the Problems" The present invention consists of a spindle motor for a first disk and a spindle motor for a second disk that have different driving rotation speeds, and a pick-up for reading recorded information on the first disk and the second disk. In a disk compatible player in which the disks are arranged on the same straight line, the spindle motor for the first disk is moved by the driving force of the spindle motor to a position where it does not interfere with the operation of the pick-up.

"Configuration of Embodiments" The present invention will be described below based on embodiments shown in the drawings. FIG. 1 is a perspective view of a disc compatible player according to the present invention when playing a first disc, and FIG. 2 is a perspective view of a disc compatible player according to the present invention when playing a second disc.

In the above drawings, reference numeral 1 denotes a semicircular bevel gear, and this bevel gear 1 is fixed to a player base 2. Reference numeral 3 denotes a mounting body. A horizontal portion 4 is formed on the top of the mounting body 3, and a first disk spindle motor 5 for driving a first disk such as a compact disk is mounted on this horizontal portion 4. The spindle motor 5 is fixed in a vertical position, and a first disk turntable 6 on which the first disk is placed is fixed to the rotating shaft of the spindle motor 5. Furthermore, two arms 7 are provided at the bottom of the mounting body 3 protruding in the same direction as the horizontal part 4, and the tips of the arms 6 are connected to bearings 8 fixed to both ends of the bevel gear 1. It is rotatably pivoted.

9 is the spindle motor 5 for the first disk mentioned above.
a gearbox 1 mounted on the lower end of the first disk spindle motor 5 for decelerating the rotational force of the first disk spindle motor 5;
0 is a drive gear rotated by the output of this gear box 9, and this drive gear 10 meshes with the bevel gear 1 described above. Although not shown, the gear box 9 has a built-in clutch that connects and connects the first disk spindle motor 5 and the gear box 8.

Reference numeral 11 denotes a second disk spindle motor for driving a second disk such as a video disk, and its rotational speed is different from that of the first disk spindle motor 5 described above. The second disk spindle motor 11 is fixed to the player base 2 at a distance greater than the radius of the first disk from the first disk spindle motor 5. Further, a second disc spindle motor 11 has a second
A second disc turntable 12 on which a disc is placed is fixed.

Reference numeral 13 denotes an optical pickup for reading the recorded information on the first disk and the second disk. The player base 2 is slidably attached to a guide bar 14 horizontally suspended along the player base 2. The above-mentioned pick-up 13 is connected to the second disk spindle motor 11 via the first disk spindle motor 5.
It is located on the opposite side.

Here, the center of the rotation axis of the first disk spindle motor 5, the center of the rotation axis of the second disk spindle motor 11, and the pickup 1
The centers of objective lenses No. 3 and 3 are located on the same straight line X.

“Effects of Examples” Next, the operation of the above embodiment will be explained.

First, when playing the first disc,
As shown in the figure, the first disk spindle motor 5 is in a vertical position. Further, the first disk spindle motor 5 and gearbox 9 are disconnected by a clutch. Therefore, the rotational force of the first disk spindle motor 5 is not transmitted to the gearbox 9.

Therefore, the first disk is placed on the first disk turntable 6, and the first spindle motor 5 is
Rotate with. On the other hand, the pickup 13 reproduces the information recorded on the first disk by tracing the back surface of the first disk along the guide bar 14.

Next, the case of reproducing the second disc will be explained with reference to FIG. First, the clutch connects the spindle motor 5 and gearbox 9 for the disk.
When connected, the rotational force of the first disk spindle motor 5 is transmitted to the gear box 9. Therefore, the first disk spindle motor 5
When the motor rotates, this rotational force is decelerated by the gearbox 9 and transmitted to the drive gear 10. Therefore, the drive gear 10 rotates the bevel gear 1 and moves toward the front in the drawing. Further, since the mounting body 3 rotates toward the front using the bearing 8 as a fulcrum, the first disk spindle motor 5 is tilted so that its rotating shaft is in a horizontal state, and is positioned at a position where it does not interfere with the movement of the pick-up 13. Move to.

Therefore, the second disk is placed on the second disk turntable 12 and rotated by the second disk spindle motor 11. On the other hand, pick up 1
3 reproduces the information recorded on the second disk by tracing the back surface of the second disk along the guide bar 14.

"Other Embodiments" In the above embodiments, the spindle motor 5 for the first disk is of an upright type, but it can be installed horizontally and the shaft angle can be controlled using the drive gear or belt of the turntable. It may also be converted.

In addition, a centrifugal clutch is provided in the gearbox 9, and the spindle motor 5 and drive gear 9 are connected to each other depending on the rotation speed of the first disk spindle motor 5.
It may also be possible to automatically switch on/off the connection. Furthermore, in the embodiment, a clutch is provided in the gear box 9, but this clutch is eliminated, the bevel gear 1 is formed into a flat plate shape, and the drive gear 10 is
may be a roller that rotates in contact with the flat plate, and this roller may be formed to move toward and away from the flat plate to provide a clutch function.

Further, in the above embodiment, the pickup 13 is of an optical type, but it may be of a capacitive type or other type. Further, although a disk compatible player equipped with a first disk spindle motor 5 and a second disk spindle motor 11 has been described, it is also possible to accommodate another type of player, such as a capacitive player, in this disk compatible player. A similar effect can be achieved on the player as well.

"Effects of the Invention" As described above, the present invention provides a disk compatible player in which the first disk spindle motor 5, the second disk spindle motor 11, and the pick-up 13 are arranged on the same straight line X.
The spindle motor 5 for the first disk is configured to be moved by the driving force of the spindle motor 5 to a position where the operation of the pick-up 13 is not hindered.

That is, since there is no need for a dedicated motor for moving the first disk spindle motor 5, the number of parts is reduced, wiring etc. are simplified, and costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the disk compatible player according to the present invention when playing the first disk, FIG. 2 is a perspective view of the second disk of the same, and FIG. 3 is a perspective view of the conventional disk compatible player. A perspective view when playing the first disk.
FIG. 4 shows a perspective view when the second disk is reproduced. 1...Bevel gear, 2...Player base,
3...Mounting body, 5...Spindle motor for first disk, 10...Drive gear, 11...Spindle motor for second disk, 13...Pickup, X...Line line.

Claims (1)

[Scope of utility model registration request] In a disk player in which the spindle motor for the first disk, the spindle motor for the second disk, and the pick-up are arranged on the same straight line, the spindle motor for the first disk is moved to a position where the operation of the pick-up cannot be prevented by the driving force of the spindle motor. A disk compatible player characterized by being configured so that it can be moved up to