JPH0935455A - DISK RECORDING / REPRODUCING DEVICE, DISC RECORDING / REPRODUCING DEVICE MANUFACTURING DEVICE, AND ITS MANUFACTURING METHOD - Google Patents

Abstract

(57) Abstract: Using a brushed motor that is inexpensive and optimal for miniaturization, it is possible to obtain the perpendicularity of the turntable disk support surface with respect to the rotation axis of the rotary drive body with high accuracy and to achieve high density. Provided is a disc recording / reproducing device capable of recording / reproducing information. SOLUTION: A plurality of through holes 16 provided in a turntable 12 and a head surface lb thereof protrude from the turntable surface, and a spindle motor 1 as a rotation driving body.
The degree of orthogonality with respect to the central axis la of 0 is accurately adjusted, and the gap between the plurality of disc receivers 13 loosely inserted into the respective through holes and the turntable caused by the loose insertion of the disc receivers is provided. Adhesive 1 that is filled and is a filling material that attaches and fixes the disc receiver to the turntable
8 and.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a disk recording / reproducing apparatus for recording / reproducing a disk as an information recording medium such as a magnetic disk or an optical disk and a turntable for manufacturing a disk supporting portion for directly supporting the disk. The present invention relates to a manufacturing apparatus and a manufacturing method for a disk recording / reproducing apparatus.

[0002]

2. Description of the Related Art For example, a CD player, a CD-ROM device, or a magneto-optical disk device (MO) is used as a device for recording / reproducing on / from a disk such as a magnetic disk or an optical disk.
Etc. are known.

Conventionally, the disk drive section of these recording / reproducing apparatuses is constructed as shown in FIGS. 10 and 11. The apparatus of FIG. 10 is used in a relatively low density disk drive. In the figure, Ma is a brushed DC motor generally used as a spindle motor. A turntable Ta is attached and fixed to the rotary shaft 1a of the motor Ma by means such as press fitting or adhesion.

A rubber sheet 2 is bonded along the peripheral edge of the upper surface of the turntable Ta. The disc D as an information recording medium is placed on the turntable Ta, but actually it is placed via this rubber sheet 2. That is, the torque of the motor Ma is changed to the disk D by utilizing the magnitude of the coefficient of static friction of the rubber sheet 2.
It is a mechanism to communicate to.

Further, for efficient torque transmission,
Turntable Ta on disk D with a clamper (not shown)
By applying pressure in the direction, the clamper, disc, and turntable rotate together.

The spindle motor Ma is screwed and fixed to the motor bracket 3, and the motor bracket 3 is attached and fixed to the mechanical chassis 4. Motor rotating shaft 1a
A sleeve 5 is loosely fitted in the. Then, one end of a spring 6 such as a torsion spring or a toggle spring provided on the motor bracket 3 elastically abuts on the sleeve 5. That is, the spring 6 applies an appropriate lateral pressure to the motor rotating shaft 1a via the sleeve 5, and absorbs the bearing play of the spindle motor Ma.

The configuration shown in FIG. 11 is intended for a higher density disc recording / reproducing apparatus. As the spindle motor Mb here, a brushless DC motor is used. The turntable Tb is fixed to the motor rotation shaft 1b by press fitting or adhesion.

The turntable Tb also serves as the yoke of the rotor magnet 7 of the motor Mb. Then, the rubber-based sheet 2 is adhered along the peripheral edge of the upper surface of the turntable Tb, and the mechanism of transmitting the torque of the motor Mb to the disk D is similar using the magnitude of the static friction coefficient of this sheet. .

In the configuration shown in the figure, the turntable Tb can be machined on the basis of the rotary shaft 1b while the turntable Tb is attached and fixed to the rotary shaft 1b. The deflection accuracy becomes good.

[0010]

By the way, in this disc recording / reproducing apparatus, particularly in the case of a drive unit for a high-density disc such as an optical disc, the relative positional relationship between the disc and a pickup head for reading a signal becomes very important. ing.

That is, since the light emitted from the pickup is reflected on the disc and returned to the pickup side again, if the disc is slightly inclined with respect to the pickup, the light does not return to the pickup correctly.

In the apparatus shown in FIG. 10, since the spindle motor Ma is a brush motor, it is inexpensive, but on the other hand, there are errors such as the perpendicularity between the turntable Ta and the rotary shaft 1a and the perpendicularity between the rotary shaft 1a and the motor bracket 3. Is likely to occur, and therefore, it is difficult to obtain the deflection accuracy of the disc D, and the assembling process for obtaining the accuracy is not easy.

The apparatus shown in FIG. 11 has an advantage that accuracy such as verticality can be easily obtained, but a separate driver circuit is required for the brushless motor. In addition, since the market volume of brushed motors is overwhelmingly large, it is not only economically disadvantageous, but it is inevitable that a brushless motor will become larger in order to produce the same torque as a brushed motor. There is a drawback of.

The present invention has been made in view of the above circumstances. A first object of the present invention is to provide a rotary shaft of a rotary drive body while using a brushed motor which is inexpensive and optimal for miniaturization. The present invention aims to provide a disc recording / reproducing device which can obtain the perpendicularity of the turntable disc supporting surface with high accuracy, can record and reproduce higher density information, and has a wide range of use.

A second object is to manufacture a disk recording / reproducing apparatus capable of directly supporting a disk on a turntable and obtaining the perpendicularity of the disk supporting surface with respect to the rotation axis of the rotary drive member with high accuracy. The manufacturing method is provided.

[0016]

In order to satisfy the first object, the disk recording / reproducing apparatus of the first invention is, in claim 1, a disk recording / reproducing apparatus for recording / reproducing a disk as an information recording medium, The rotary drive body, a turntable connected to a rotary shaft of the rotary drive body, and a plurality of disk support portions protruding from the turntable for supporting the disks, each of the disk support portions being It is characterized in that it has a disc supporting surface that abuts against the disc, and that this disc supporting surface is provided on the same reference plane that is orthogonal to the central axis of the rotary drive body.

A second aspect of the present invention is characterized in that the disk support portion according to the first aspect is provided equidistantly on the turntable. As a third aspect, the turntable according to the first aspect is provided with a plurality of through holes,
Further, the disc supporting portion includes a disc receiving member mounted in the through hole, and a head having a disc supporting surface is provided at an upper end portion of the disc receiving device.

According to a fourth aspect of the present invention, the disk receiver according to the third aspect is loosely inserted in a through hole, and a gap between the through hole and the disk receiver is filled with a fixing filler. And

A fifth aspect of the present invention is characterized in that the turntable according to the first aspect is made of a synthetic resin material, and the disc support portion is integrally formed on the turntable by projection.

A sixth aspect of the present invention is characterized in that the turntable according to the first aspect is provided with a position display section for indicating a position where the disk supporting section is provided. A seventh aspect of the present invention is characterized in that the position display portion according to the sixth aspect is a notch or a through hole provided at a peripheral end portion of the turntable.

According to an eighth aspect of the present invention, the position display portion according to the sixth aspect is a magnetized portion provided on the turntable with respect to the disk support portion. A ninth aspect of the present invention is characterized in that the position display portions according to the sixth aspect are provided in the same number and at the same intervals as the disc support portions.

According to a tenth aspect of the present invention, there is provided a disk recording / reproducing apparatus manufacturing apparatus in which a rotary drive member and a plurality of rotary shafts of the rotary drive member are connected to each other. A turntable provided with through holes, a plurality of disc support portions protruding from the turntable for supporting a disc as an information recording medium, and a position display portion showing a position where these disc support portions are provided. Each of the disc supporting portions includes a disc receiving member loosely inserted in the through hole, and a fixing filler filled in a gap between the through hole and the disc receiving device. A head having a disk supporting surface that abuts the disk is provided at the upper end of the tool, and each disk supporting surface is provided on the same reference plane orthogonal to the central axis of the rotary drive. In a manufacturing apparatus for a disk recording / reproducing apparatus, a position detecting means which is provided in the vicinity of the turntable and detects the position of the disk supporting section via the position display section, and a position detecting result by the position detecting section are used. Positioning means for driving the rotary driver to rotate the turntable to position the through hole,
Temporary fixing means for positioning the disc support surface of the disc receiving member, which is loosely inserted into the through hole positioned by the positioning means by the sandwiching bodies, at a reference plane position; A resin injecting means for injecting an ultraviolet curable resin as a filling material between the disk receiver positioned by the temporary fixing means and the through hole, and an ultraviolet ray in the ultraviolet curable resin injected by the resin injecting means. It is characterized by comprising an ultraviolet irradiation means for irradiating.

According to an eleventh aspect, the position indicating portion according to the tenth aspect is a notch or a through hole provided at a peripheral end portion of the turntable. Claim 12
According to a tenth aspect of the present invention, the position display section is provided in the vicinity of the turntable, and the position of the disk support section is detected by detecting the light transmitted through the position display section.

A thirteenth aspect of the present invention is characterized in that the position indicating portion according to the tenth aspect is a magnetizing portion provided corresponding to the disk supporting portion. A fourteenth aspect of the present invention is characterized in that the position detecting means according to the thirteenth aspect is provided in the vicinity of the turntable, and detects the position of the disk support portion by magnetically detecting the position display portion.

In order to satisfy the second object, the method for manufacturing a disc recording / reproducing apparatus of the third invention is, as claim 15, a rotary drive body and a plurality of rotary drive bodies connected to the rotary shaft of the rotary drive body. A turntable provided with a through hole, a plurality of disc support portions protruding from the turntable for supporting a disc as an information recording medium, and a position display portion showing the position where the disc support portion is provided. Be equipped with
Each of the disc supporting portions includes a disc receiving member loosely inserted in the through hole and a fixing filler filled in a gap between the through hole and the disc receiving member, and an upper end portion of the disc receiving device. Is provided with a head having a disc supporting surface that abuts the disc, and the disc supporting surface is provided on the same reference plane orthogonal to the central axis of the rotary drive. In the manufacturing method, the position detection step of detecting the position of the disk support portion via the position display portion, and the positioning for performing the positioning of the through hole by driving the rotary drive member based on the position detection result in this position detection step. A step, a disk receiver loose insertion step of loosely inserting the disk receiver into the through hole positioned in the positioning step, and a device loosely inserted in the disk receiver loose insertion step. A resin for injecting an ultraviolet curable resin as a filler into the gap between the disc holder and the through hole, which is temporarily fixed by positioning the disc supporting surface of the disc receiver at the reference plane position. An injection step and an ultraviolet irradiation step of irradiating the ultraviolet curing resin injected in the resin injection step with ultraviolet rays to solidify the resin and fixing the disk receiver positioned in the temporary fixing step to the turntable. It is characterized by doing.

According to the inventions of claims 1 to 5, by providing means for solving the above problems,
Regardless of the surface accuracy of the turntable, the orthogonality with respect to the central axis of the rotary drive body is accurately adjusted, and a high surface accuracy of the disk supporting portion can be obtained.

According to the inventions of claims 6 to 9,
The position of the disk support provided on the turntable is clarified. According to the inventions of claims 10 to 14, the structure of the disk recording / reproducing apparatus is simple, and the detection accuracy is high, regardless of the surface accuracy of the turntable.
High surface accuracy of the disk support can be obtained.

According to the fifteenth aspect of the present invention, the manufacturing process of the disk recording / reproducing apparatus is simple, the detection accuracy is high, and the high surface accuracy of the disk supporting portion can be obtained regardless of the surface accuracy of the turntable.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described.
This will be described with reference to the drawings. FIG. 1 and FIG. 2 show a disk recording / reproducing apparatus, particularly a disk drive section.
In the figure, reference numeral 10 denotes a spindle motor which is a rotary driving body, and a commonly used brush DC motor.
A turntable 12 is attached and fixed to a rotating shaft 11 of the motor 10 by means such as press fitting or adhesion.

A plurality of (here, three) disk supporting members 13, which are disk supporting portions to be described later, are bonded and fixed to the turntable 12 via an adhesive 18. The disk D to be driven is placed on the turntable 12, but is actually supported on the disk receiver 13.

Further, in order to transmit the torque, the turntable 12 is attached to the disk D by a clamper (not shown).
By applying pressure in the direction of, the clamper, the disk D, and the turntable 12 are integrally rotated.

The spindle motor 10 is screwed and fixed to the motor bracket 14. The motor bracket 14 is attached and fixed to a mechanical chassis (not shown).

A sleeve 15 is loosely fitted on the motor rotating shaft 11, and one end of a spring 16 provided on the bracket 14 elastically abuts on the sleeve 15. That is, the spring 16 is connected to the motor rotating shaft 11 via the sleeve 15.
The fact that the bearing play of the spindle motor 10 is eliminated by applying an appropriate lateral pressure to the bearing is the same as the conventional one.

The disc receiver 13 is constructed as shown in FIG. The disk receiver 13 has a T-shaped cross section, and a leg portion 13a inserted into a through hole 16 provided in the turntable 12 and a head portion 13b protruding above the turntable 12 are integrally formed. A member having a large friction coefficient, for example, a rubber sheet 17 made of a neoprene rubber material is attached to the upper surface of the head portion 13b.

The diameter of the through hole 16 provided in the turntable 12 is sufficiently larger than the diameter of the leg portion 13a of the disc receiver 13 and smaller than the diameter of the head portion 13b. An adhesive 18 is filled between the leg portions 13a and the through holes 16,
The disk receiver head 13b and the turntable upper surface 12
The adhesive 18 is also filled between a and a.

That is, the leg portion 13 of the disc receiver 13
The head a and the head 13b are bonded and fixed to the through hole 16 of the turntable 12 and the upper surface 12a with an adhesive 18. As the adhesive 18, for example, an ultraviolet curable adhesive (UV adhesive) is used.

Actually, when mounting the disc receiver 13 on the turntable 12, the turntable 12 is fixed and the disc receiver 13 is temporarily fixed by using a jig.

The above-mentioned jig is a head 1 for a disk receiving member with respect to a central axis la of a spindle motor 10 which is a rotary driving body.
The orthogonality of the rubber sheet 17, which is the upper surface of 2b, in the surface direction lb is accurately obtained, and the disk receiver 13 is temporarily fixed.

In this state, the disc receiver leg portion 13a, the turntable through hole 16 and the disc receiver head portion 13 are provided.
A narrow gap is formed between b and the turntable upper surface portion 12a.

Then, an ultraviolet curable adhesive (UV adhesive) 18 is filled in the gap and is irradiated with ultraviolet rays. The adhesive is solidified, and the disc receiver 13 is fixedly adhered.

The work of temporarily fixing and fixing the disk receiver 13 and injecting and filling the gap with the turntable 12 with the adhesive 18 is performed at one place. Therefore, after rotating the turntable 12 by a predetermined angle and stopping it, the disk receiver 13 is attached and fixed.
Repeatedly 3 times, the disk receiver 13 is attached and fixed.

Again, as shown in FIGS. 1 and 2, the disc D is supported by all the disc receivers 13 ... Each of the disk receivers 13 is attached and fixed to the turntable 12 via an adhesive 18, and the orthogonality with respect to the central axis 11 of the spindle motor 10 which is a rotary drive is accurately obtained.

Since all the disk receivers 13 ... Are attached and fixed to the turntable 12 at one place, the deflection accuracy of the disk receivers 13 is extremely high regardless of the surface accuracy of the turntable 12. . Therefore, recording / reproducing with respect to the disk D can be performed at a higher density.

In order to cope with the automation of mounting and fixing of the disc receiving member 13 as described above, a plurality of position indicating portions 20 as shown in FIGS. 3 and 4 are provided at the peripheral end portion of the turntable 12, and the position indicating portions are displayed. Detection means 21 for detecting the section 20
Is used.

The other structure is exactly the same as that described above, and the same reference numerals are given to omit the new description. Also,
Some parts are omitted. The position display portion 20 is a notch provided on the peripheral end portion of the turntable 12 at a position facing each of the disc receiving members 13 by 180 °. That is, these notches 20 are formed in the turntable 1
The same number and the same number as the disk receivers 13 attached to the 2 are provided. Alternatively, a through hole may be provided.

The position detecting means 21 is a so-called photocoupler, and is formed in a U-shape so that the peripheral end portion of the turntable 12 faces the upper and lower surfaces thereof. When the spindle motor 10 is energized and the turntable 12 is rotationally driven, the photocoupler 21 detects the notch 20.

The position of the disk member 13 can be automatically specified from the position where the disk receiver 13 is located at the position facing each other by 180 °. Next, such a position display unit 2
On the premise that 0 and the detecting means 21 are provided, a means for automatically attaching and fixing the disk receiver 13 to the turntable 12 will be described.

As shown in FIGS. 5 and 6, the apparatus main body 3
A step portion 31 is formed at 0, and a first air cylinder 32 with the operating rod 32a facing upward is arranged therein.
A frame 33 is arranged above the stepped portion 31 in parallel with the upper surface of the apparatus body 30, and a second air cylinder 34 with the operating rod 34a facing downward is provided on the back surface of the stepped portion 31 facing the stepped portion 31. Is installed.

Actuating rod 32a of the first air cylinder 32
Each of the air cylinders 3 is arranged so that the end face and the end face of the operating rod 34a of the second air cylinder 34 are correctly aligned and face each other.
2, 34 are arranged. And these air cylinders 3
2, 34 form a temporary fixing means.

The first air cylinder 32 is set so that even if the operating rod 32a is in the middle of ascending, as soon as a load greater than a predetermined amount is applied to the end face, the ascending of the operating rod 32a is stopped and the position is maintained. The second air cylinder 34 is set so as to stop when it descends to a position of a predetermined distance h from the mounting surface of the spindle motor 10 supported by the apparatus main body 30 and hold that position.

The spindle motor 10 comprises the device main body 3
Motor mounting hole 3 provided adjacent to the 0 recessed portion 31
5 is attached. A turntable 12 is fitted on a rotary shaft 11 of the motor 10, and the turntable 1
2 is provided with a through hole 16 for receiving the disc holder 13
Is loosely inserted.

As described above, the through holes 16 and 18 are formed.
A notch 20 for position detection is provided at a position facing 0 °. The photocoupler 2 is inserted into the device body 30 so that the peripheral end of the turntable 12 is inserted into the U-shaped opening.
1 is arranged.

As shown only in FIG. 6, the turntable 1
A resin injecting device 35 for injecting an ultraviolet curable resin so as to face the second disk receiver 13 and an ultraviolet irradiating device 3 for irradiating the resin injecting part with an ultraviolet ray to cure the resin.
6 are arranged.

The manufacturing apparatus of the disk recording / reproducing apparatus is constructed in this way, and the manufacturing method is as follows. First, the spindle motor 10 is energized to rotate the turntable 12. The turntable 12 rotates, and one of the notches 20 provided at the peripheral end portion is detected by the photocoupler 21. That is, the position detection process is performed.

Immediately after the spindle motor 10 is de-energized, the turntable 12 stops at a predetermined position. That is, the positioning process is performed. In this state, the disc receiver 13 is inserted into the through hole 16 of the turntable 12. That is, the disk receiving tool insertion step is performed.

The disk receiver 13 loosely inserted into the notch 20 at a position opposite 180 ° has its leg 13a end face opposed to a portion above the end face of the operating rod 32a of the first air cylinder 32, and the head 13b. The end surface correctly faces the lower portion of the end surface of the operating rod 34a of the second air cylinder 34.

First, the operating rod 34a of the second air cylinder 34 descends and stops at a predetermined distance h from the mounting surface of the spindle motor 10. At this time, the end surface of the operating rod 34a is still separated from the end surface of the disk receiver head 13b.

At an appropriate timing, the operating rod 32a of the first air cylinder 32 rises and its end face abuts the end face of the disc receiver leg portion 13a. Then, the operating rod 32a pushes up the disc receiver 13 as it is.

The end face of the head 13b of the disc holder 13 that has been pushed up is operated by the operating rod 34 of the second air cylinder 34.
In the state where it is in contact with the end face a,
Actuating rods 32a, 34 of the second air cylinders 32, 34
By a, it is completely clamped and fixed in the vertical direction.

At the same time, the first
The load applied to the operating rod 32a of the air cylinder 32 becomes a predetermined value or more, and the ascending operation of the operating rod is stopped and locked at that position. That is, it becomes a temporary fixing step.

After all, the disc receiver 13 has the first and second discs.
The air cylinders 32 and 34 temporarily fix and fix the spindle motor 10 at a predetermined height position h from the mounting position. The leg portion 13a is loosely inserted into the through hole 16 of the turntable 12 from the disc receiving member 13
There is no relation between the temporary positioning accuracy with respect to and the surface accuracy of the turntable 12.

The axis line lc of the disk receiver 13 obtained here is correctly parallel to the axis line la of the spindle motor rotating shaft 11. As a result, as described above with reference to FIG.
The disk support surface, which is the surface of the disk receiver head 13b, has a high degree of verticality with respect to the motor rotation shaft 11.

While maintaining this state, the resin injection device 35 injects the ultraviolet curable resin between the disc receiver 13 and the turntable 12. Specifically, it is injected into the gap between the disc receiver leg portion 13a and the peripheral surface of the turntable through hole 16 and into the gap between the disc receiver head portion 13b and the turntable upper surface portion 12a. That is, the resin injection step is performed.

When a predetermined amount of resin has been injected, the injection is stopped, and instead the ultraviolet irradiation device 36 irradiates the resin injection site with ultraviolet rays. That is, it is an ultraviolet irradiation step. The resin solidifies immediately, and the disc holder 13
Is fixed.

Next, the first and second air cylinders 3
2 and 34 are actuated to actuate operating rods 32a and 34a, respectively.
Is separated from the disc receiver 13 and returned to its original position.
At a timing, the energization of the spindle motor 10 is restarted and the turntable 12 is driven to rotate.

When the photocoupler 21 detects the next notch 20, the rotation of the turntable 12 is stopped, the notch 20 located 180 ° opposite to the notch 20 is detected, and the turntable is positioned with high accuracy. To do. Then, the disk receiver 13 is loosely inserted into the through hole 16, clamped by the first and second cylinders 32 and 34, and temporarily fixed. Then, the above operation is repeated by injecting resin and irradiating with ultraviolet rays to position and fix the disk receiver 13.

As described above, all the disk receivers 13 attached to the turntable 12 are positioned and fixed by the same device arranged at one place. Turntable 12
The disk receiving member 13 is mounted irrespective of the surface accuracy, and the orthogonality of the disk supporting surface to the central axis la of the spindle motor 10 is accurately adjusted.

Actually, the disk D is supported by these disk receivers 13 ... However, since the orthogonality with respect to the central axis la of the spindle motor 10 is accurately obtained, the deflection accuracy is good and the high density recording / reproducing is performed. Is perfect for

FIG. 8 shows another embodiment of the present invention, which is an example in which a turntable 12A is integrally formed with a disk receiving projection 13A as a disk support. Here, the turntable 12A is formed of a resin material and can be easily deformed by the heated disc surface forming jigs 40 and 41. One jig 40 is on the cavity side,
The other jig 41 is on the core side.

These jigs 40 and 41 are arranged at only one place with respect to the turntable 12A which is rotationally driven, and the mutual end faces of the jigs 40 and 41 are accurately adjusted in the orthogonality with respect to the central axis la of the spindle motor 10 of the disk supporting surface. Has been done.

Then, in manufacturing the disk receiving projection 13A, the turntable 12A is repeatedly rotated and stopped only three times, and the above-described processing is performed when the turntable 12A is stopped. The turntable 12A is provided with position display parts such as notches and holes, while the manufacturing apparatus side is provided with a photocoupler which is a position detection part for detecting the position.

The surface accuracy of the obtained disk receiving projection 13A has nothing to do with the surface accuracy of the turntable 12A, and the orthogonality with respect to the central axis la of the spindle motor 10 is accurately adjusted. Is good and is most suitable for high density recording / reproducing.

Furthermore, as another embodiment of the present invention,
As shown in FIG. 9, a plurality of arc-shaped clamping magnets 45 ... Are combined in an annular shape as a position display section with a gap between the end surfaces.

.. are hooked on the turntable 12, and three magnetized portions 46 are provided so as to correspond to the positions of these disk receivers. By detecting the positions of the magnetized portions 46 by the magnetic detector 47 as the position detecting means, the positions of the disk receivers 13 can be sequentially specified.

In the above embodiment, the same number of magnetizing portions 46 as the disk receivers 13 are provided, but the number is not limited to this and the number of the disk receivers 13 is an integral multiple or half. Magnetic detector 4 with a magnetizing unit
The position of the disc receiver may be specified by signal processing on the 7th side.

[0076]

As described above, according to the first to fifteenth aspects of the present invention, the disc supporting portion is sequentially formed while the turntable is stopped to be rotated, which contributes to the surface accuracy of the turntable. In addition, it is possible to form a disc support portion having a good deflection accuracy with respect to the rotation axis of the rotation driving body, and it is possible to record / reproduce information with a higher density on the disc, thereby expanding the range of use. And other effects.

[Brief description of drawings]

FIG. 1 is a perspective view of a disk drive unit in a disk recording / reproducing apparatus showing an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a disk drive unit in the disk recording / reproducing apparatus of the same embodiment.

FIG. 3 is a perspective view of a disc drive unit and a unit for detecting the position display unit in the disc recording / reproducing apparatus having the position display unit according to the embodiment.

FIG. 4 is a vertical cross-sectional view of a disc drive unit and a unit for detecting the position display unit in the disc recording / reproducing apparatus having the position display unit according to the same embodiment;

FIG. 5 is a perspective view of an apparatus for manufacturing a disk recording / reproducing apparatus according to the same embodiment.

FIG. 6 is a vertical cross-sectional view of the disc recording / reproducing apparatus manufacturing apparatus of the embodiment.

FIG. 7 is a vertical sectional view of a turntable and a disk receiver according to the same embodiment.

FIG. 8 is a vertical cross-sectional view of another embodiment of a disk receiving protrusion manufacturing apparatus.

FIG. 9A is a configuration diagram of a position display unit according to another embodiment and means for detecting the position display unit. FIG. 6B is a configuration diagram of a magnet that constitutes the position display unit.

FIG. 10 is a vertical cross-sectional view of a disk drive unit in a disk recording / reproducing apparatus according to a conventional embodiment.

FIG. 11 is a vertical cross-sectional view of a disk drive unit in a disk recording / reproducing apparatus according to a further different conventional embodiment.

[Explanation of symbols]

10 ... Rotational driving body (spindle motor), 12 ... Turntable, 16 ... Through hole, 13 ... Disk receiver, 13a
... Legs (of disk receiver), 13b ... Head of disk receiver, 18 ... Filler (adhesive), 13A ... Disk receiving projections, 20 ... Position indicator (notch), 21 ... Position detecting means (photocoupler), 32 ... First air cylinder, 32a ... (First air cylinder) operating rod, 3
4 ... 2nd air cylinder, 34a ... (2nd air cylinder) operating rod, 35 ... Adhesive injection device, 36 ... Ultraviolet irradiation device.

Claims (15)

[Claims] 1. A disk recording / reproducing apparatus for recording / reproducing a disk as an information recording medium, comprising: a rotary driving body; a turntable connected to a rotary shaft of the rotary driving body; and a projection provided on the turntable. A plurality of disc supporting portions for supporting the discs, each of the disc supporting portions having a disc supporting surface that abuts the disc, and the disc supporting surface is orthogonal to the central axis of the rotary driving body. A disk recording / reproducing apparatus, wherein the disk recording / reproducing apparatus is provided on the same reference plane. 2. The disk supporting portion is provided equidistantly on the turntable.
Disc recording / reproducing apparatus according to the above. 3. The turntable is provided with a plurality of through holes, and the disc support portion is provided with a disc receiver mounted in the through holes, and an upper end portion of the disc receiver is provided with: The disk recording / reproducing apparatus according to claim 1, further comprising a head having a disk supporting surface. 4. The disk receiver is loosely inserted in a through hole,
4. The disc recording / reproducing apparatus according to claim 3, wherein the gap between the through hole and the disc receiving member is filled with a fixing material for fixing. 5. The disc recording / reproducing apparatus according to claim 1, wherein the turntable is made of a synthetic resin material, and the disc support portion is formed integrally with the turntable so as to project therefrom. 6. The disc recording / reproducing apparatus according to claim 1, wherein the turntable is provided with a position display portion for indicating a position where the disc support portion is provided. 7. The disc recording / reproducing apparatus according to claim 6, wherein the position display portion is a notch or a through hole provided at a peripheral end portion of the turntable. 8. The disc recording / reproducing apparatus according to claim 6, wherein the position display portion is a magnetizing portion provided on the turntable with respect to the disc supporting portion. 9. The position display section is provided in the same number and at the same intervals as the disk support section.
Disc recording / reproducing apparatus according to the above. 10. A rotary drive member, a turntable connected to the rotary shaft of the rotary drive member and provided with a plurality of through holes, and a disk protruding from the turntable and serving as an information recording medium. A plurality of disc support portions and a position display portion indicating a position where these disc support portions are provided, wherein each of the disc support portions includes a disc receiving member loosely inserted into the through hole, and the through hole. A head member having a disc supporting surface for contacting the disc is provided at the upper end of the disc supporting member. The surface is provided in the vicinity of the turntable in the manufacturing apparatus of the disk recording / reproducing apparatus provided on the same reference plane orthogonal to the central axis of the rotary drive, Position detecting means for detecting the position of the disk supporting portion via the display portion, and positioning means for driving the turntable to rotate the turntable based on the position detection result of the position detecting means to position the through hole. And a temporary fixing means for positioning the disc supporting surface of the disc receiving member, which has a pair of upper and lower vertically movable clamps and is loosely inserted in the through hole positioned by the positioning means by the clamps, at the reference surface position. A resin injecting means for injecting an ultraviolet curable resin serving as a filling material between the disc holder and the through hole positioned by the temporary fixing means, and an ultraviolet curable resin injected by the resin injecting means. An apparatus for manufacturing a disc recording / reproducing apparatus, comprising: an ultraviolet ray irradiating unit for irradiating an ultraviolet ray. 11. The apparatus for manufacturing a disc recording / reproducing apparatus according to claim 10, wherein the position display portion is a notch or a through hole provided at a peripheral end portion of the turntable. 12. The disk recording according to claim 10, wherein the position display section is provided in the vicinity of the turntable, and the position of the disk support section is detected by detecting the light transmitted through the position display section. Reproduction equipment manufacturing equipment. 13. The apparatus for manufacturing a disc recording / reproducing apparatus according to claim 10, wherein the position display portion is a magnetizing portion provided corresponding to the disc supporting portion. 14. The disk according to claim 13, wherein the position detecting means is provided in the vicinity of the turntable and detects the position of the disk supporting portion by magnetically detecting the position display portion. Recording / playback device manufacturing equipment. 15. A rotary drive member, a turntable connected to the rotary shaft of the rotary drive member and having a plurality of through holes, and a disk protruding from the turntable and serving as an information recording medium. A plurality of disc supporting portions and a position display portion indicating a position where the disc supporting portions are provided are provided, and each of the disc supporting portions includes a disc receiving member loosely inserted in the through hole, a through hole and a disc. A head having a disc supporting surface that abuts against the disc is provided at the upper end of the disc supporting member, and the disc supporting surface is In the method for manufacturing a disc recording / reproducing apparatus provided on the same reference plane orthogonal to the central axis of the rotary drive body, the position of the disc support portion is detected via the position display portion. The position detecting step, the positioning step of driving the rotation driving member to position the through hole based on the position detection result in this position detecting step, and the disc receiving member being inserted into the through hole positioned in the positioning step. The disk receiving member loose insertion step of inserting, the temporary fixing step of positioning the disk supporting surface of the disk receiving member loosely inserted in this disk receiving member loosening step at the reference plane position, and the temporary fixing step The resin injection step of injecting an ultraviolet curable resin as a filler into the gap between the disc receiving member and the through hole, and the ultraviolet curable resin injected in this resin injecting step is irradiated with ultraviolet rays to be solidified. And a step of irradiating an ultraviolet ray for fixing the disk receiver positioned by the fixing step to the turntable. Raw device manufacturing method.