JPH0836830A - Rotor-case integrated disk table and disk device - Google Patents

Abstract

PURPOSE:To provide a rotor-case integrated disk table simple in structure. CONSTITUTION:When the disk table 42 is molded out of synthetic resin, the rotor case 43 formed of magnetic material of the spindle motor 22 is subjected to integral insert-molding so as to have the same shaft in common. In addition, the chucking yoke 43d integrally formed on an upper central part of the rotor case 43 is disposed in an upper layer part of the chucking hub 42a integrally molded in the upper central part of the disk table 42.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotor case-integrated disk table in which a recording and / or reproducing disk such as an optical disk or a magneto-optical disk is mounted, and a disk device such as a CD-ROM drive using the disk table. It is about.

[0002]

2. Description of the Related Art The applicant of the present invention first applied for a CD-ROM drive as shown in FIGS. 4 to 6, which is an example of a disk device.

First, as shown in FIGS. 4 and 5, this C
In the D-ROM drive, a front panel 2 is attached to the front end of a disk device body 1 formed in a flat box shape, and a tray insertion port 3 is horizontally formed in the front panel 2. Further, there is provided a disc tray 4 which can be horizontally inserted and removed from the tray insertion opening 3 in the disc device main body 1 in the directions of arrows a and b. A disc 6 for recording and / or reproducing, which is a CD-ROM, is horizontally mounted on a substantially circular recess 5 formed on the upper surface of the disc tray 4.

A pair of left and right guide rails 7 formed on both left and right side surfaces of the disc tray 4 are horizontally inserted into a pair of left and right guide grooves 8 formed in the disc device main body 1, so that the disc tray 4 is Guided by these guide grooves 8, arrows a, b are applied to the disk device main body 1.
It is configured to be loaded and ejected horizontally in the direction.

A decorative plate 9 which also functions as a finger pressing plate at the time of manual loading is formed at the front end of the disc tray 4, and a locked pin 10 is provided on the lower surface of the disc tray 4 near the decorative plate 9. It is formed vertically.

When the disc tray 4 is completely loaded in the disc device main body 1 in the direction of arrow a,
A lock mechanism 11 for locking the locked pin 10 with a lock lever is provided in the disk device body 1.

Further, the front panel 2 has an eject button 12, a pin insertion hole 13 for an emergency eject mechanism, an earphone jack 14 and a volume 1.
5 and the like are provided.

A moving block 24 having a disk table 21, a spindle motor 22 and an optical pickup 23 mounted therein and a pulley holder 26 holding a chucking pulley 25 are built in the disk device body 1. A pair of left and right connecting portions 26a formed at the rear end of the pulley holder 26 are connected to a pair of left and right connecting pins 24a formed at the rear end of the moving block 24. The pulley holder 26 is configured to be horizontally slidable in the directions of arrows a and b along the lower surface of the top plate 1a of the disk device main body 1, and the moving block 24 is guided by a guide mechanism (not shown) to guide the arrow a. , B, and is rotatable about the connecting pin 24a in the upward and downward directions of arrows c and d.

A pair of left and right connecting pins 24a and a pair of left and right spring locking portions 27 fixed to the front side (direction of arrow b) in the disk device body 1 are formed by tension coil springs. A pair of ejecting springs 2
8 is hung.

At the rear end of the disc tray 4 (the end on the arrow a direction side), a pair of left and right connecting portions 26a are provided with an arrow a.
A pair of left and right abutting portions 29 which are notches abutting from each other
Are formed.

The disc tray 4 is formed of synthetic resin or the like, and the disc tray 4 has a rear end portion (from the substantially central portion of the bottom portion 5a of the substantially circular recess 5 formed on the upper surface). A wide slotted notch 4b parallel to the directions of the arrows a and b is formed along the disc tray center toward the central portion of the end portion 4a on the arrow a direction side) 4a.

Further, the disk table 21 is fixed to the upper end of the spindle of the spindle motor 22 attached to the moving block 24, and the optical pickup 23 moves the carriage 23b having the objective lens 23a along the moving block 24 by the arrow a, The carriage 23b is movably mounted in the direction b, and is moved in the directions a and b by a carriage driving mechanism (not shown) such as a voice coil motor.

Then, as shown in FIG. 5A, when the disc tray 4 is completely ejected from the disc body 1 in the direction of the arrow b, the moving block 24 and the pulley holder 26 form a pair of left and right. It is slid together in the direction of arrow b by the ejecting spring 28, and only the moving block 24 is moved by its own weight to the pair of left and right connecting pins 2
4a is rotated in the direction of the arrow c, which is the lower side, to be in a tilted state.

Next, at the time of loading, FIG.
As shown in FIG. 5, after the disk 6 is horizontally placed in the recess 5 on the disk tray 4, as shown in FIG.
The ornamental plate 9 of the disc tray 4 is pushed by a finger, and the disc tray 4 is manually operated by the disc device body 1
Quickly push it horizontally in the direction of arrow a.

At this time, as shown in FIG. 5B, the pair of left and right abutting portions 29 of the disc tray 4 pushes the pair of left and right connecting portions 26a in the direction of arrow a, so that the moving block 24 and the pulley holder 26 are connected. Are slid together in the arrow a direction against the pair of left and right ejecting springs 27, and only the moving block 24 is guided by a guide mechanism (not shown). 24
It becomes a horizontal state by being rotated in the direction of the arrow d which is the upper part around a.

Then, as shown in FIG. 5B, the disc table 21 is fitted into the center hole 6 of the disc 6 from below, the disc 6 is floated above the disc tray 4 and the chucking pulley 25 is provided. Thus, the disk 6 is magnetically chucked on the disk table 21. At the same time, the optical pickup 23
The objective lens 23a is brought close to the lower surface of the disk 6.
Then, at the loading completion position, the locked pin 10 of the disc tray 4 is automatically locked by the lock mechanism 11.

Next, at the time of ejecting, the lock pin 11 locked by the lock mechanism 11 is automatically released by a command from the host computer, or the eject button 12 is pushed with a finger to lock the locked pin 11 by the lock mechanism 11. Unlock 10

Then, as shown in FIG. 5C, the moving block 2 is moved by the pair of left and right ejecting springs 28.
4 and the pulley holder 26 are pushed back together in the direction of arrow b to the eject position shown in FIG.

Then, the pair of left and right connecting portions 26a pushes the pair of left and right abutting portions 29 in the direction of arrow a, so that the disc tray 4 is directed toward the outside of the disc device main body 1 by arrow b.
Soft-ejected by pop-up action in the direction. So, put your hands on the decorative plate 9
Can be quickly pulled out in the direction of arrow b by manual operation.

Next, as shown in FIG. 6, this CD-RO
In the M drive, the disk table 21 is horizontally press-fitted into the outer periphery of the upper end of the vertical motor shaft 22a of the spindle motor 22 by the center hole 30. Then, a circular recess 31 is formed in the upper end surface of the frustoconical chucking hub 21 formed in the same axial center shape in the upper center of the disk table 21, and a chucking yoke 32 is press-fitted or bonded into the recess 31. Etc. were installed horizontally.

In the lower central part of the chucking pulley 25, a chucking magnet 33 attracted by a chucking yoke 32 on the disk table 21 and a chucking yoke 34 stacked on it are horizontally embedded. ing.

Also in the spindle motor 22, a disc-shaped caulking component 35 formed of brass or the like is horizontally provided at the center of the upper end of the rotor case 22b which is pressed into a cylindrical shape with a magnetic material such as an iron plate. The caulking is performed, and the caulking component 35 is mounted on the outer circumference of the motor shaft 22a so that the disc table
The rotor case 22b is horizontally inserted into the lower position of the motor through the center hole 36, and the rotor case 22b is fixed to the motor shaft 22.
It was attached to the outer periphery of a with the same axis.

In the spindle motor 22, the lower end of the motor shaft 22a is vertically paired in a cylindrical boss 22d which is vertically swaged on the motor base plate 22c.
Rotatably supported by the motor shaft 22a on the thrust receiver 22f fixed inside the lower end of the boss 22d.
The lower end of is placed. Then, a plurality of stator coils 22h are wound around an iron core 22g attached to the outer periphery of the boss 22d by press fitting, bonding or the like to form a stator.
The cylindrical rotor magnet 22i arranged on the outer circumference of the iron core 22g is bonded to the inner circumference of the rotor case 22b to form the rotor. The motor base plate 22c
The spindle motor 22 is attached to the moving block 24 shown in FIG.

When the loading of the disc 6 by the disc tray 4 is completed, the chucking hub 21a of the disc table 21 is inserted into the center hole 6a of the disc 6 from below as shown in FIG. The bottom 5a of the recess 5 of the disc tray 4 shown in FIG.
From above, the chucking pulley 25 is lifted up and floated, and the chucking pulley 25 is pressed onto the disk 6 by the attraction force of the chucking magnet 33 to the chucking yoke 32. Then, centering of the central hole 6a of the disk 6 is performed by the taper surface 21b on the outer circumference of the chucking hub 21a, and the disk 6 is pressed horizontally by the disk crimping surface 25a on the lower surface of the chucking pulley 25 on the outer surface of the disk table 21. Magnetic chucking (pressing and fixing) is performed on the disc mounting surface 21c.

[0025]

However, in the prior application example,
Four components such as the disk table 21, the chucking yoke 32, the rotor case 22a, and the caulking component 35 had to be separately processed.

Moreover, these four parts are connected to the motor shaft 22.
Also when mounting to a, the step of press-fitting the disk table 21 into the motor shaft 22a, the step of mounting the chucking yoke 32 in the recess 31 by press-fitting or bonding, the step of crimping the caulking component 35 to the rotor case 22b. The four assembling steps such as the step of crimping the caulking component 35 to the motor shaft 22a were required.

Therefore, in the prior application example, the disk table 2
1. Regarding the chucking yoke 32 and the rotor case 22a, the number of parts and the number of assembling steps were very large, and the cost was extremely high.

In the method of mounting the chucking yoke 32 in the recess 31 formed in the upper end surface of the chucking hub 21a of the disk table 21 by press fitting or bonding, the chucking yoke 32 is mounted in the recess 31. Since the height is likely to vary, the chucking yoke 3
In some cases, the height of the height dimension A ₁ between the disc mounting surface 21c of the disc table 21 and the upper surface of the chucking yoke 32 may vary due to the fact that 2 may jump upward from the recess 31. .

If the height A ₁ becomes smaller than the design value, the gap between the chucking yoke 32 and the chucking magnet 33 becomes too wide, and the chucking magnet 33 to the chucking yoke 32 is opened.
Will weaken the suction force. Therefore, the pressing force of the chucking pulley 25 onto the disk mounting surface 21c of the disk 6 becomes weak, and the disk 6 cannot be firmly fixed on the disk table 21.

When the height A ₁ becomes too large than the design value, the chucking magnet 32 abuts on the lower surface of the chucking pulley 25, and the chucking pulley 25 causes the disk 6 to be placed on the disk mounting surface 21c. Cannot be crimped to.

Further, in the structure in which the rotor case 22b of the spindle motor 22 is caulked to the lower position of the disk table 21 on the outer periphery of the motor shaft 22a by using the caulking component 35, from the motor base plate 22c to the chucking yoke 32. The height B _{1 of the} entire disk table 21 and the spindle motor 22 becomes large, which hinders the overall thinning of the disk device. Then, there is a problem that the weight becomes heavy by using the caulking component 35 such as brass.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a rotor case integrated disk table having a simple structure and a disk device using the same.

[0033]

DISCLOSURE OF THE INVENTION In order to achieve the above-mentioned object, a disk table integrated with a rotor case of the present invention comprises:
When molding a disk table on which a recording and / or reproducing disk is mounted with synthetic resin, a rotor case formed of a magnetic material of a spindle motor is integrally insert-molded into the disk table in the same axial center shape. A chucking yoke formed integrally with the center upper part of the rotor case is arranged in an upper layer portion of a chucking hub integrally molded with the center upper part of the disk table.

Further, in the disk device of the present invention, when the disk table on which the recording and / or reproducing disk is mounted is molded by the synthetic resin, the rotor case formed of the magnetic material of the spindle motor is used as the above-mentioned disk. A rotor case in which a chucking yoke integrally insert-molded into the table in the same axial center is integrally formed in the upper center part of the rotor case and is arranged in an upper layer of a chucking hub integrally molded in the upper center part of the disc table. An integrated disc table and a chucking pulley for magnetically chucking the disc onto the disc table by a chucking magnet attracted to the chucking yoke are provided.

[0035]

In the rotor case integrated disc table of the present invention constructed as described above, when the disc table is molded of synthetic resin, the rotor case formed of the magnetic material of the spindle motor has the same axial center shape. Since the insert molding is performed integrally with the disk table, the rotor case can be assembled to the disk table at the same time when the disk table is molded. Moreover, since the chucking yoke integrally formed in the center upper part of the rotor case is arranged in the upper layer part of the chucking hub integrally molded in the center upper part of the disc table, a part of the rotor case also serves as the chucking yoke. Therefore, it is not necessary to separately process and assemble the disk table and the chucking yoke.

Further, in the disk device of the present invention configured as described above, chucking is performed by the attraction force of the chucking magnet to the chucking yoke that is also used as a part of the rotor case of the rotor case integrated disk table. The pulley can magnetically chuck the disc onto the disc table.

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a CD-ROM drive will be described below with reference to FIGS. It should be noted that the same reference numerals are given to the same structural parts as those in FIGS.

First, as shown in FIGS. 1 and 2, the rotor case integrated type disk table 41 includes a disk-shaped disk table 42 formed of a synthetic resin having abrasion resistance such as a polycarbonate resin, and an iron plate. And a cylindrical rotor case 43 pressed by a magnetic material such as.

As shown in FIG. 2, the rotor case 43 has a cylindrical portion 43a, a disc portion 43b horizontally connected to the upper end of the cylindrical portion 43a, and a central upper portion of the disc portion 43b. It is pressed into a shape having a plurality of raised taper portions 43c for centering, for example, and an annular chucking yoke 43d horizontally connected to the upper ends of the three taper portions 43c. .

When the disc table 42 is molded with polycarbonate resin or the like, the disc portion 43b, the taper portion 43c and the chucking yoke 43d of the rotor case 43 are integrally insert-molded into the disc table 42 in the same axis. Then, the chucking yoke 43d is horizontally arranged in the upper layer portion of the frustoconical chucking hub 42a integrally formed on the upper center of the disc table 42.

At the time of insert molding, the disk portion 43b, the taper portion 43c and the chucking yoke 43d of the rotor case 43 are inserted and positioned in the cavity of the mold for injection molding the disc table 42, and the disc table 42 is positioned in the cavity. The disc table 42 is molded by injecting a molten resin such as a polycarbonate resin. Then, at that time, the disc portion 43b, the taper portion 43c, and the chucking yoke 43d are integrally embedded in the disc table 42.

In the rotor case integrated disc table 41, as shown in FIG. 1, a horizontal upper end surface 42 of the chucking hub 42a of the disc table 42 is provided.
a ′ and the chucking yoke 43d of the rotor case 43
The horizontal upper end surface 43d 'is formed into a flush shape.

At this time, the upper end surface 4 of the chucking yoke 43d is formed on the inner wall surface of the cavity of the mold forming the upper end surface 42a 'of the chucking hub 42a during the insert molding.
By insert-molding with 3d 'abutting, these upper end surfaces 42a' and 43d 'can be molded in the same plane with high precision.

Therefore, the height dimension A ₂ between these upper end surfaces 42a 'and 43a' and the disk mounting surface 42d on the outer peripheral upper surface of the disk table 42 can be increased as designed depending on the molding accuracy during insert molding. Can be issued with accuracy.

Further, in this rotor case integrated disc table 41, as shown in FIG. 1, the three tapered portions 43c of the rotor case 43 are formed on the tapered surface 43b on the outer periphery of the frustoconical chucking hub 43a of the disc table 42. Is exposed in the same plane.

By the way, according to the rotor case-integrated disc table 41, as in the prior application, as shown in FIG. 1, the cylindrical rotor magnet 22i is bonded to the inner circumference of the cylindrical portion 43a of the rotor case 43. After that, the disc table 42 is press-fitted to the outer periphery of the upper end of the motor shaft 22a of the spindle motor 22 by a center hole 44 formed in the center thereof (the disc table 42 may be inserted into the motor shaft 22a and bonded or screwed. Then, the spindle motor 22 is assembled.

At this time, since the rotor case 43 is integrally insert-molded to the disc table 42, the disc table 42 is attached to the outer periphery of the upper end of the motor shaft 22a by press fitting or the like, only by one assembly step. The rotor case 43 and the chucking yoke 43d together with the disc table 42 can be attached to the motor shaft 22a at one time.

Therefore, as in the prior application example shown in FIG. 6, the chucking yoke 32 is provided in the recess 3 of the disk table 21.
It is possible to omit the step of attaching the inside of 1 by press fitting or adhesion, the step of crimping the caulking component 35 to the rotor case 22b, the step of caulking the caulking component 35 to the motor shaft 22a, and the like.

In the rotor case-integrated disc table 41, the caulking component 35 itself can be omitted, and the chucking yoke 43d is provided in the rotor case 43.
Since the disk table 21, the rotor case 22a, the chucking yoke 32, and the caulking component 35 in the prior application example shown in FIG. Two
It can be composed of parts.

As shown in FIG. 1, since the caulking component 35 can be omitted, the height dimension B of the entire spindle motor 22 and the disk table 42 from the motor base plate 22c of the spindle motor 22 to the chucking yoke 43d. ₂ can be made smaller than the entire height B _{1 of} the prior application example shown in FIG. 6 by an amount corresponding to the thickness of the caulking component 35.

Further, in the rotor case integrated disc table 41, by omitting the caulking component 35, the overall weight including the disc table 42 and the spindle motor 22 is reduced.

In addition, the rotor case integrated disc table 41 has a disk portion 43b, a taper portion 43c and a chucking yoke of a rotor case 43 which is press-formed with a metal plate or the like in a disc table 42 formed of polyacetal resin or the like. Since 43d is integrally insert-molded, the disk portion 43b, the taper portion 43c, and the chucking yoke 43d formed of these metal plates and the like also serve as a reinforcing material for the disc table 42.

Therefore, the strength of the disc table 42 is remarkably improved, deformation of the disc table 42 due to aging, etc. is unlikely to occur, and a lightweight and durable disc table 42 can be obtained.

In the rotor case-integrated disc table 41, as shown in FIG. 1, a part of the rotor case 43 is also used when the disc 6 is magnet-chucked onto the disc table 42 by the chucking pulley 25. The chucking pulley 25 is pressed onto the disk 6 by the attraction force of the chucking magnet 33 to the chucking yoke 43d.

At this time, the center hole 6a of the disk 6 is press-fitted onto the outer periphery of the taper portion 43c formed by a part of the rotor case 43, and is centered with high precision.
Since the rotor case 43 and the taper portion 43c are formed of a material having high wear resistance such as an iron plate, there is almost no wear of the taper portion 43c due to friction between the taper portion 43c and the center hole 6, and durability and The reliability of the centering of the disk 6 is very high.

Then, the disc 6 is crimped and fixed on the horizontal disc mounting surface 43c on the outer peripheral upper surface of the disc table 42 by the disc crimping surface 25a on the outer peripheral lower surface of the chucking pulley 25.

At this time, as described above, since the height dimension A ₂ can be obtained with high precision, the gap between the chucking yoke 43d and the chucking magnet 33 is set with high precision as designed. Thus, the chucking magnet 33 can generate an attractive force as designed.

Therefore, the disk 6 is replaced by the disk table 4
It is possible to perform magnetic chucking on the top 2 with stability, strength, and high accuracy.

Next, in the modification shown in FIG. 3, the tapered portion 43c of the rotor case 43 is deformed into a vertical portion 43e,
The tapered surface 42b of the outer circumference of the frustoconical chucking hub 42a of the disk table 42 formed of a synthetic resin having wear resistance such as polyacetal resin is used to
The vertical portion 43e and the like are embedded inside the tapered surface 42b so that the centering of the center hole 6a can be performed.

According to this modification, it is not necessary to form the tapered portion 43c for the center ring, which requires high processing accuracy, in the rotor case 43, and the rotor case 43 can be easily pressed.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and various modifications can be made based on the technical idea of the present invention.

[0062]

The rotor case-integrated disc table and the disc device of the present invention constructed as described above have the following effects.

The rotor case-integrated disc table of the present invention is such that, when the disc table is molded of synthetic resin, the rotor case formed of the magnetic material of the spindle motor is integrally insert-molded to have the same axis. At the same time when the disc table is molded, the rotor case can be assembled to the disc table at the same time, and the chucking yoke integrally formed on the upper center part of the rotor case is integrally formed on the upper center part of the disc table. Since it is arranged in the upper layer of the king hub so that the chucking yoke can be used as a part of the rotor case, it is not necessary to separately assemble and assemble the disc table and the chucking yoke. Disc table, chucking yoke, rotor case and caulking in the prior application example Four parts of the use component can be configured only 2 parts by disk table and the rotor casing. Further, the rotor case and the chucking yoke can be attached together with the disc table by only one assembling step of attaching the disc table to the motor shaft by press fitting or the like.

Therefore, compared with the assembly structure of the disk table, chucking yoke and rotor case shown in the prior application example, the number of parts and the number of assembling steps can be significantly reduced, and a significant cost reduction can be achieved. it can.

In the rotor case integrated disc table of the present invention, when the rotor case is integrally insert-molded on the disc table, the chucking yoke of the rotor case is arranged in the upper layer portion of the chucking hub of the disc table. Therefore, the height dimension between the disk mounting surface of the disk table and the upper end surface of the chucking hub can be accurately obtained by the molding accuracy of the disk table made of the synthetic resin.

Therefore, the magnetic chucking of the disc on the disc table can be performed with high accuracy.

The rotor case-integrated disc table of the present invention can omit the caulking component for caulking the rotor case shown in the prior application to the motor shaft, so that the entire spindle motor including the disc table is small and lightweight. Can be realized.

In the rotor case-integrated disc table of the present invention, since the disc table can be reinforced by the rotor case integrally insert-molded into the disc table, the strength of the disc table can be remarkably improved. It is possible to obtain a durable and durable disc table that is unlikely to be deformed due to the like.

In the rotor case-integrated disc table of the present invention, a taper portion for centering the center hole of the disc is integrally formed in the lower portion of the chucking yoke of the rotor case, and the taper portion is formed in the disc table. Since it can be exposed to the outer circumference of the chucking hub, the center hole of the disk can be press-fitted into the tapered part of the rotor case formed of sheet metal or the like for high-accuracy centering and wear of the tapered part It almost disappears, and the durability and the reliability of the Zenter ring are very high.

In the rotor case integrated disc table of the present invention, the disc table is formed of a synthetic resin having abrasion resistance, and the tapered surface for the centering of the center hole of the disc is integrally formed on the upper center of the disc table. Since it can be formed on the outer periphery of the molded chucking hub, it is not necessary to form a tapered portion on the rotor case, which requires high processing accuracy, and the rotor case can be easily processed.

In the disk device of the present invention, the disk is magnetized on the disk table by the chucking pulley by the attraction force of the chucking magnet to the chucking yoke which is also used as a part of the rotor case of the rotor case integrated disk table. Since the disk device can be chucked, the cost, thickness and weight of the disk device can be reduced, and the magnetic disk chucking on the disk table is highly reliable. .

[Brief description of drawings]

FIG. 1 is a central cross-sectional side view for explaining a main part in an embodiment of a rotor case integrated type disc table and a disc device of the present invention.

FIG. 2 is a plan view and a perspective view of a rotor case.

FIG. 3 is a side view of a center cross section showing a modified example of the rotor case-integrated disc table of the present invention.

FIG. 4 is an exploded perspective view illustrating a CD-ROM drive.

FIG. 5 is a schematic diagram illustrating the loading and ejecting operations of the CD-ROM drive.

FIG. 6 is a central cross-sectional side view showing a disk table, a spindle motor and a chucking pulley of a prior application example.

[Explanation of symbols]

 1 disk device body 4 disk tray 6 disk 6a disk center hole 22 spindle motor 22a spindle motor motor shaft 25 chucking pulley 33 chucking pulley chucking magnet 41 rotor case integrated disk table 42 disk table 42a disk table chuck King hub 42b Disk table taper surface 42c Disk table disk mounting surface 43 Rotor case 43a Rotor case cylindrical portion 43b Rotor case disk portion 43c Rotor case taper portion 43d Rotor case chucking yoke

Claims (4)

[Claims] 1. When molding a disk table on which a recording and / or reproducing disk is mounted with a synthetic resin, a rotor case made of a magnetic material of a spindle motor is made to have the same axis center on the disk table. A rotor case integrated type characterized in that a chucking yoke integrally insert-molded and integrally formed on a central upper portion of the rotor case is arranged in an upper layer portion of a chucking hub integrally molded on a central upper portion of the disk table. Disk table. 2. A taper portion for centering a center hole of the disk is integrally formed in a lower portion of the chucking yoke of the rotor case, and the taper portion is exposed to an outer periphery of a chucking hub of the disk table. The rotor case integrated disk table according to claim 1, wherein the disk table is integrated with the rotor case. 3. The outer periphery of the chucking hub, wherein the disk table is molded from a synthetic resin having abrasion resistance, and a tapered surface for centering the center hole of the disk is integrally molded on the upper center of the disk table. The rotor case integrated disc table according to claim 1, wherein 4. The rotor case-integrated disc table according to claim 1, 2 or 3, and a chucking magnet absorbed by the chucking yoke magnetically chucks the disc on the disc table. A disk device comprising a chucking pulley.