JPH02154363A - Spindle mechanism for disc playback devices - Google Patents

Abstract

PURPOSE:To make the assembling and parts exchanging works of a spindle mechanism for disk reproducing device easier and shorter in time and, at the same time, to reduce the thickness of the spindle by providing a holding means which fits a spindle motor and turntable to a traverse base and constituting the spindle mechanism in a module. CONSTITUTION:A spindle motor 1, turntable 3 fitted to the motor 1, and holding member for fitting a spindle block to a traverse base 2 are provided. Then the spindle block is fitted to the traverse base 2 in a state where the spindle block is held by the member 9 and a spindle mechanism constituted of the turntable 3, motor 1, and member 9 is constituted in a module. Since the spindle block is constituted in the module in such a manner, the assembling and parts exchanging works of the mechanism can be performed easily and the member 9 can be reduced in thickness. Moreover, since height adjustment is not required for the turntable at the time of assemblage and parts exchange, the working time can be shortened remarkably.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a spindle that holds and rotates a disk in a disk playback device that optically records and plays back information by projecting a source spot onto a disk-shaped recording medium. 0 Conventional technology related to mechanisms In recent years, disc playback devices have become increasingly smaller, thinner, higher quality, and more compact.
The price has been reduced, and in order to stabilize quality, simplify assembly and servicing, and reduce size and thickness, it is desired that each component be modularized and no adjustment required.

In addition, the demand for compact disc playback devices for portable use and in-vehicle use is increasing significantly, and it is also necessary to improve vibration resistance.

An example of the above-described conventional spindle mechanism for a disc playback device will be described below with reference to the drawings.

Figure 4 shows a spindle machine (4) of a conventional disc playback device. In Figure 4, 1 is a spindle motor, 2 is a traverse base, 3 is a turntable, 4 is a centering ring, and 6 is a club/ Bag net, 6 is a magnet fixing plate, 7 is a turntable spring, 8 is a clamp plate,
9 is a clamper bin, 10 is a motor mounting screw, 11 is a disk protection sheet, and 12 is a disk.

The operation of the spindle mechanism for a disc playback device configured as described above will be described below.

First, a turntable 3 is accurately attached to a spindle motor 1 attached to a traverse base 2 at a specified height. Inside the turntable 3,
A turntable magnet 6 is attached, and the disk 12 is clamped by attracting the clamp plate 8 by the magnetic force of the turntable magnet 6, and the turntable 3 is rotated by the spindle motor 1 at a specified rotation speed.

Problems to be Solved by the Invention However, with the above configuration, the height of the turntable 3 must be adjusted accurately during assembly, which requires time to assemble and adjust, and requires replacement of parts of the spindle block. When doing this, it is difficult to accurately adjust the height of the turntable 3, the traverse base 2 needs to have sufficient strength to hold the spindle block, so it is difficult to make it thinner, and the spindle motor Since there is no mechanism for suppressing the backlash in the thrust direction of No. 1, there was a problem in that the vibration resistance performance could not be maintained.

In view of the above problems, the present invention simplifies the work during assembly and parts replacement by making the spindle mechanism a separate block from the traverse base 2 and at the same time suppressing the backlash of the spindle motor 1 in the thrust direction. The object of the present invention is to provide a spindle mechanism for a disc playback device that is ultra-thin, does not require height adjustment, and has high vibration resistance.

Means for Solving the Problems In order to solve the above problems, the spindle mechanism for a disc playback device of the present invention has the following features: (1) For mounting a spindle motor, a turntable attached to the spindle motor, and a spindle block to a traverse base. It is equipped with a holding member.

(2) The spindle motor, the turntable attached to the spindle motor, the turntable magnet built into the turntable, the attachment of the spindle block to the traverse base, and the magnetic force of the turntable magnet to reduce the backlash in the thrust direction of the spindle motor. and a holding member made of a magnetic material for suppressing the damage.

Effects of the present invention: (1) Since the spindle block has a modular structure, assembly and parts replacement operations are easy. Further, since the holding member of the spindle block can be made thinner, it is possible to make the spindle block thinner. Furthermore, there is no need to adjust the height of the turntable when assembling or replacing parts, making it possible to significantly reduce work time.

(2) Since the spindle block holding member made of a magnetic material and the turntable magnet attract each other by magnetic force, it is possible to suppress backlash in the thrust direction of the spindle motor, and greatly improve vibration resistance. Embodiment 0 Below, a spindle mechanism for a disc playing device according to an embodiment of the present invention will be described with reference to the drawings.

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

In Figure 1, 1 is a spindle motor, 2 is a traverse base, 3 is a turntable, 4 is a centering ring,
6 is a clamper magnet that uses magnetic force to pull the clamp plate to hold the disk, and when installing the spindle motor, uses magnetic force to pull the plate and suppress the rattling of the spindle motor 1 in the thrust direction; e is used to hold the clamper magnet 6; , 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 attaching the spindle motor block to the motor pace and the thrust direction of the spindle motor 1 The spindle motor is mounted on a plate to suppress backlash, 1o is a motor mounting plate for mounting the spindle motor 1 on the spindle motor plate 9, and 11 is a disk protection sheet, 12 is a motor mounting screw, 13 is Kura/Bapin, and 14 is a disk.

FIG. 2 shows a top view of the disc playing device, and FIG. 3 shows a back view, in which 1 is a spindle motor;
2 is a traverse base, 3 is a turntable, 16 is a former pickup, 9 is a plate for attaching the spindle motor block to the traverse base 2, and a plate for suppressing the backlash of the spindle motor 1 in the thrust direction, 12 The motor bubble seal for attaching the spindle motor 1 to the plate 9 is a screw, 16
17 is a traverse motor serving as a driving source for sending the optical pickup 16; 17 is a feed screw for sending the optical pickup 16 using the driving force of the traverse motor 16; 18a, 1;
8b, 18% section, spur gear for decelerating the driving force of the traverse motor 16 and transmitting it to the optical pickup 15, 1
9 is a holding plate for suppressing the rattling of the feed screw 17 and for fixing the traverse motor 16; 20 is a screw for attaching the holding plate 19 to the traverse base 2; and 21 is a light for controlling the rotational movement of the feed screw 17. A nut plate for changing the reciprocating motion of the pickup 16, 22 a nut plate spring for pressing the nut plate 21 against the feed screw 17, and 23 a screw for attaching the nut plate 21 and the nut plate spring 22 to the optical pickup 16. , 24 is a guide shaft of the sub-shaft of the original pickup 15, 25a.

25b is a holding member for attaching the guide shaft 24 to the traverse base 2, 26 is a limit switch for detecting the innermost position of the optical pickup 15, and 27 is a screw for attaching the limit switch 26 to the traverse base 2. It is.

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

First, FIG. 1 shows a cross section of a spindle mechanism for a disc performance device. This spindle mechanism for a disc performance device consists of a spindle motor 1, a turntable 3 attached to the spindle motor at a specified height, and a turntable 3 mounted on the spindle motor at a specified height. A clamper magnet 6 built into the table and a spindle motor mounting plate 9 for mounting the spindle motor 1 and turntable 3 to the feed pace 2 are provided.

When assembling or replacing parts, a spindle block having a turntable 3 mounted at a predetermined height is mounted on the traverse base 2.

During performance, the clamper magnet 6 and spindle motor mounting plate 9 are attracted to each other by magnetic force.As described above, according to this embodiment, the spindle mechanism has a modular configuration, which facilitates assembly and parts replacement. Furthermore, there is no need to adjust the height of the turntable 3 during assembly or parts replacement, resulting in a significant reduction in working time. Furthermore, since the spindle block holding portion can be made thinner, the spindle block can be made thinner. Furthermore, when the spindle motor is mounted, since the plate 9 and the turntable magnet 6 are attracted to each other by magnetic force, the backlash of the spindle motor 1 in the thrust direction can be greatly suppressed, and the vibration resistance performance can be greatly improved.

Effects of the Invention As described above, in the present invention, the spindle motor is mounted using the plate 9, and the spindle periphery is constructed into a module, thereby facilitating assembly and parts replacement work. Additionally, there is no need to adjust the height of the turntable when assembling or replacing parts, which greatly reduces work time.

Furthermore, the spindle can be mounted by drawing the plate 9 and the turntable magnet 5 together by magnetic force.
Shake in the thrust direction of the spindle motor 1 can be suppressed, and vibration resistance performance can be greatly improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a spindle mechanism for a disc playing device according to an embodiment of the present invention, Fig. 2a is a top view, Fig. 2 is an exploded perspective view of the entrance of Fig. 21B, and Fig. 3a is a back view of the same. , 3rd
The figure is an exploded perspective view of part B of FIG. 3a, and FIG. 4 is a sectional view of a conventional spindle mechanism for a disc playing device. 1...Spindle motor, 2...Traverse base, 3...Turntable, 4...
... Centering/g, 5... Clamper magnet, 6... Magnet fixing plate, 7...
・Turntable spring, 8...Clamp plate, 9
...The spin tonneau motor is installed on the plate, 10...
・・Motor installation: Screws for plate installation, 11: Disk protection sheet, 12: Screws: Motor installation.
13...Kranhahin, 14...Disc, 15...Optical pickup, 16...
...Traverse motor, 17...Feed screw, 1
8&, 18b, 180... Spur gear, 19...
...Pressure plate, 20...For the presser plate installation, use screws, 2
1... Nut plate, 22... Nut plate spring, 23... Nut plate mounting screw, 24...
... Guide shaft, 25a, 25b ... Guide shaft holding member, 26 ... Limit switch, 27.
...The limit switch is installed using screws. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
Is there a 9-inch motor with a 3-meter turntable? ---Sushi! 〉 Dormo-q37S chair 1 frame [
No. 1? ---Sugonni Rumorg Kotoranogunu-su J-M-Li-ntese, 4-1 and the song 12-Mo7. Torimura faji.

Claims (1)

[Claims] (1) A turntable on which a disk is placed, a spindle motor that rotates the turntable at a specified rotation speed, and a spindle block configured by mounting the turntable on the spindle motor, for attaching the spindle block to the traverse base. a holding member, and a spindle mechanism comprising the turntable, the spindle motor, and the mounting member is modularized and mounted on a traverse base so that the spindle block is held by the holding member. A spindle mechanism for a disc playback device. (2) Consisting of a turntable on which a disk is placed, a spindle motor that rotates the turntable at a specified rotation speed, a magnet built into the turntable, and a magnetic material for attaching the spindle motor to a traverse base. By attracting the turntable to the holding member, which is a magnetic material, by the magnetic force of the magnet incorporated in the turntable attached to the spindle motor, the thrust direction of the spindle motor is A spindle mechanism for a disc playback device characterized by suppressing play.