JP2671413B2 - Spindle mechanism for disc player - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spindle for holding and rotating a disc in a disc reproducing apparatus of a system for optically recording and reproducing information by projecting a light spot on a disc-shaped recording medium. It is related to the mechanism.

2. Description of the Related Art In recent years, disc playback devices have become increasingly smaller, thinner, higher quality, and lower in price. Modules for each component have been used to stabilize quality, simplify assembly and service, and reduce size and thickness. And non-adjustment are desired.

Further, in the compact disc reproducing apparatus, the demand for portable and vehicle-mounted devices is greatly increasing, and it is also necessary to improve the vibration resistance.

An example of the above-mentioned conventional spindle mechanism for a disk reproducing apparatus will be described below with reference to the drawings.

FIG. 4 shows a spindle mechanism of a conventional disc reproducing apparatus. In FIG. 4, 1 is a spindle motor, 2 is a traverse base, 3 is a turntable, 4 is a centering ring, 5 is a clamper magnet, 6 is a magnet fixing plate, 7 is a turntable spring, 8 is a clamp plate,
Reference numeral 9 is a clamper pin, 10 is a motor mounting screw, 11 is a disk protection sheet, and 12 is a disk.

The operation of the disk reproducing apparatus spindle mechanism configured as described above will be described below.

First, the turntable 3 is accurately attached to the spindle motor 1 attached to the traverse base 2 at a prescribed height. The turntable magnet 5 is mounted inside the turntable 3, and the disk 12 is clamped by pulling the clamp plate 8 by the magnetic force of the turntable magnet 6, and the turntable 3 is rotated by the spindle motor 1 in a prescribed manner. Rotate by number.

However, in the above-described configuration, the height of the turntable 3 must be accurately adjusted during assembly,
It takes time to assemble and adjust, it is difficult to adjust the height of the turntable 3 accurately when the parts of the spindle block are replaced, and the traverse base 2 is enough to hold the spindle block. There is a problem that it is difficult to reduce the thickness because strength is required, and vibration resistance cannot be maintained because there is no mechanism for suppressing rattling of the spindle motor 1 in the thrust direction.

In view of the above problems, the present invention simplifies the work at the time of assembly / part replacement by using the spindle mechanism as a separate block from the traverse base 2 and suppressing rattling of the spindle motor 1 in the thrust direction. An object of the present invention is to provide a spindle mechanism for a disc reproducing apparatus which is ultra-thin, has no height adjustment, and has high vibration resistance.

Means for Solving the Problems In order to solve the above-mentioned problems, a spindle mechanism for a disc reproducing apparatus according to the present invention comprises (1) a spindle motor, a turntable attached to the spindle motor, and a spindle block attached to a traverse base. And a holding member.

(2) To attach the spindle motor, the turntable attached to the spindle motor, the turntable magnet incorporated in the turntable, and the traverse base to the spindle block, and to play the play in the thrust direction of the spindle motor of the turntable magnet. And a holding member made of a magnetic material for suppressing the magnetic force.

Action The present invention has the above-described structure. (1) Since the spindle block has a modular structure, the assembly / part replacement work is easy. Further, since the holding member of the spindle block can be made thin, it can be made thin. Furthermore, since it is not necessary to adjust the height of the turntable when assembling and replacing parts, the working time can be greatly reduced.

(2) Since the holding member of the spindle block made of a magnetic material and the turntable magnet attract each other by magnetic force, play in the thrust direction of the spindle motor can be suppressed, and vibration resistance can be greatly improved. is there.

Embodiment A spindle mechanism for a disk playing device according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic cross-sectional view showing the function of the disk playing spindle mechanism in the first embodiment of the present invention.

In FIG. 1, 1 is a spindle motor, 2 is a traverse base, 3 is a turntable, 4 is a centering ring,
5 is a clamper magnet for attracting the clamp plate by magnetic force and holding the disc, and a clamper magnet for attracting the spindle motor mounting plate by magnetic force to suppress rattling of the spindle motor 1 in the thrust direction, and 6 is for holding the clamper magnet 5. A magnet fixing plate, 7 is a turntable spring for moving the centering ring 4 up and down, 8 is a clamp plate for holding the disk, 9 is for mounting the spindle motor block on the motor base, and is for adjusting the thrust direction of the spindle motor 1. Spindle motor mounting plate for suppressing rattling, 10 is a motor mounting plate mounting screw for mounting the spindle motor 1 on the spindle motor mounting plate 9, 11 is a disk protection sheet, 12 is a motor mounting screw, 13 is a clamper pin, 14 Is a disk.

FIG. 2 shows a top view of the disk playing device, and FIG.
The figure is a rear view, in which 1 is a spindle motor, 2 is a traverse base, 3 is a turntable, 15 is an optical pickup, 9 is a spindle motor block for mounting the traverse base 2,
Spindle motor mounting plate for suppressing rattling in the thrust direction of the motor, 12 is a motor mounting screw for mounting the spindle motor 1 on the spindle motor mounting plate 9, 16 is a traverse motor serving as a drive source for sending the optical pickup 15, 17 Is a feed screw for feeding the optical pickup 15 by using the driving force of the traverse motor 16, 18a, 18b, 18c are spur gears for decelerating the driving force of the traverse motor 16 and transmitting it to the optical pickup 15, 19 is a feed screw 17 A holding plate for suppressing rattling and fixing the traverse motor 16, 20 is a mounting screw for mounting the holding plate 19 on the traverse base 2, 21 is a rotational movement of the feed screw 17, and a reciprocating movement of the optical pickup 15. A nut plate for changing, 22 is a nut plate spring for pressing the nut plate 21 against the feed screw 17, and 23 is a nut plate.
21 is a mounting screw for mounting the nut leaf spring 22 on the optical pickup 15, 24 is a guide shaft of the auxiliary shaft of the optical pickup 15, 25a and 25b are holding members for mounting the guide shaft 24 on the traverse base 2, and 26 is an optical member. A limit switch for detecting the innermost position of the pickup 15 and a mounting screw 27 for mounting the limit switch 26 on the traverse base 2.

The operation of the spindle mechanism for a disk playing device configured as described above will be described below with reference to FIG.

First, FIG. 1 shows a cross section of a spindle mechanism for a disk playing device. This spindle mechanism for a disk playing device comprises a spindle motor 1, a turntable 3 attached to the spindle motor at a prescribed height, and a turntable. A clamper magnet 5 incorporated in the table, a spindle motor mounting plate 9 for mounting the spindle motor 1 and the turntable 3 on the feed base 2 are provided.

At the time of assembly and replacement of parts, a spindle block having a turntable 3 mounted at a predetermined height in advance is mounted on the traverse base 2 for assembly.

During performance, the clamper magnet 5 and the spindle motor mounting plate 9 are attracted to each other by magnetic force.

As described above, according to this embodiment, since the spindle mechanism has the module structure, the assembling / parts replacing work is easy, and it is not necessary to adjust the height of the turntable 3 at the time of assembling / parts replacement. Will be significantly shortened.
Further, since the spindle block holding portion can be made thin, the spindle block can be made thin. Further, since the spindle motor mounting plate 9 and the turntable magnet 5 are attracted to each other by magnetic force, the play in the thrust direction of the spindle motor 1 can be greatly suppressed, and the vibration resistance performance can be greatly improved.

EFFECTS OF THE INVENTION As described above, according to the present invention, the spindle motor mounting plate 9 is used and the peripheral portion of the spindle has a module structure, which facilitates the assembly / part replacement work. In addition, since it is not necessary to adjust the height of the turntable when assembling and replacing parts, the working time can be greatly reduced.

Further, by pulling the spindle mounting plate 9 and the turntable magnet 5 together by magnetic force, it is possible to suppress rattling of the spindle motor 1 in the thrust direction, and to greatly improve vibration resistance.

[Brief description of the drawings]

FIG. 1 is a sectional view of a spindle mechanism for a disk playing device in an embodiment of the present invention, FIG. 2a is a top view, FIG. 2b is an exploded perspective view of part A of FIG. 2a, and FIG. Back view, third
FIG. B is an exploded perspective view of a portion B of FIG. 3a, and FIG. 4 is a sectional view of a conventional spindle mechanism for a disk playing device. 1 ... Spindle motor, 2 ... Traverse base, 3
...... Turntable, 4 ... Centering ring, 5 ... Clamper magnet, 6 ... Magnet fixing plate, 7 ... Turntable spring, 8 ... Clamp plate, 9 ... Spindle motor mounting plate, 10 ... Motor Mounting plate Mounting screw, 11
...... Disc protection sheet, 12 ...... Motor mounting screws, 13
...... Clamper pin, 14 ...... Disc, 15 ...... Optical pickup, 16 ...... Traverse motor, 17 ...... Feed screw, 18a,
18b, 18c …… Spur gears, 19 …… Holder plate, 20 …… Holder plate mounting screw, 21 …… Nut plate, 22 …… Nut leaf spring, 23 ……
Nut plate mounting screw, 24 …… guide shaft, 25a, 25b …… guide shaft holding member, 26 …… limit switch, 27 …… limit switch mounting screw.

Claims (2)

(57) [Claims] 1. A traverse base having a turntable on which a disc is mounted, a spindle motor for rotating the turntable at a prescribed number of revolutions, and a spindle block constituted by mounting the turntable on the spindle motor. A spindle mechanism composed of the turntable, the spindle motor, and the holding member so that the spindle block is held by the holding member. A spindle mechanism for a disk reproducing device characterized by. 2. A turntable on which a disc is placed, a spindle motor for rotating the turntable at a prescribed number of revolutions, a magnet incorporated in the turntable, and a magnetic material for attaching the spindle motor to a traverse base. By a magnetic force of a magnet incorporated in the spindle motor mounted on the spindle motor, by attracting the turntable to the holding member side which is a magnetic body,
A spindle mechanism for a disk reproducing device, characterized by suppressing play in a thrust direction of a spindle motor.