JPH08171786A - Information processor - Google Patents

Abstract

PURPOSE: To provide an information processor capable of minimizing the rotational swing of an optical disk even when a casing housing the optical disk is made thin in structure. CONSTITUTION: This processor is provided with a plate like mechanical chassis 32 attached to a bottom plate 30 of a tray 22 through dampers 34a, 34c on the inner bottom surface of the casing like tray 22 and a spindle motor 50 attached to the dampers 34a, 34c side of the mechanical chassis 32 and having a rotary shaft whose one end part is protruded from the mechanical chassis 32 and rotation driving a turntable holding attachably/detachably a CD-ROM disk D. The spindle motor 50 is provided with a first supporting part 53 fixed to the mechanical chassis 32 and rotatably pivoting one end part of the rotary shaft and a second supporting part 54 protruded to be freely inclined from the bottom plate 30 of the tray 22 to the outside and rotatably supporting another end part of the rotary shaft.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CD-ROM device for writing to or reading from an optical disk and a C-ROM device such as this.
The present invention relates to an information processing device such as a personal computer having a D-ROM device or the like built therein, and particularly to a thinned information processing device.

[0002]

2. Description of the Related Art Conventionally, there is a portable personal computer device having a built-in CD-ROM device as one of information processing devices for writing or reading data on an optical disk. The CD-ROM device is a device for reproducing a CD-ROM disc which is one of optical discs.

FIGS. 9A and 9B are views showing such a personal computer device. In the figure, reference numeral 10 denotes an apparatus main body as a housing provided with a keyboard, a display and the like. On the other hand, reference numeral 20 in the drawing denotes a CD-ROM device arranged in a recess 11 provided on the side of the device body 10. Reference numeral 21 in the drawing denotes an outer box portion fixed in the recess 11, and a slide mechanism (not shown) is housed inside the outer box portion 21. On the other hand, reference numeral 22 denotes a tray (housing) for accommodating the CD-ROM disc D, which is provided by the slide mechanism of the outer box portion 21 so as to be freely inserted and removed in the direction of arrow A in the figure. Reference numeral 23 denotes a guide groove for pulling out the tray 22 along the slide mechanism, and 24 denotes an eject switch for pulling out the tray 22. Although not shown, the tray 22 is provided with a lock mechanism for fixing the tray 22 inside the outer box portion 21.

FIG. 10 is a plan view showing the tray 22.
Further, FIG. 11 shows a sectional view taken along line XX in FIG. 10 and viewed in the direction of the arrow. The tray 22 includes a bottom plate 30, an outer frame portion 31 fixed to the bottom plate 30, an opening portion 32 provided in the outer frame portion 31, and the opening portion 3.
2 and three dampers 34a to 3a for supporting the mechanical chassis 33 from the bottom plate 30.
4c.

The spindle motor 4 is attached to the mechanical chassis 33.
0, and a pickup feed mechanism (not shown) that slides the pickup 41 for reading from the CD-ROM disc D in the direction of arrow B in the drawing is supported.

As shown in FIG. 12, the spindle motor 40 has a cylindrical housing 41 attached to the mechanical chassis 33, a cylindrical case 42 arranged in the housing 41, and both ends of the case 42. Bearing 43,
A rotary shaft 45 supported via 44 is provided. A turntable (not shown) is press-fitted and fixed to the upper end of the rotary shaft 45 in the figure, and the turntable can be fixed by chucking the CD-ROM disc D. Further, a bottom portion 46a of a bottomed cylindrical support body 46 is coupled to the lower end of the rotary shaft 45 in the figure.

A stator 47 made of a coil is provided around the case 42, and a rotor 48 made of a permanent magnet is provided on the inner surface of the support 46. Damper 34
The a to 34c support the mechanical chassis 33 and have the following functions. That is, the CD-ROM device picks up the narrow track of the CD-ROM 41.
It is read by the reflection of the laser light of and the signal is demodulated.
Therefore, if the device body 10 is vibrated or shocked, the laser light of the pickup 41 may go off the track and the demodulation signal may be interrupted. Therefore, in order to prevent the influence of disturbance vibration and the like as much as possible, the mechanical chassis 33 is mounted on the damper 34a.
~ 34c, the bottom plate 30 is elastically supported.

[0008]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
The portable personal computer device incorporating the D-ROM device has the following problems. That is, when incorporating in a personal computer device,
It is necessary to reduce the thickness of the CD-ROM device 20 in order to improve portability. For this reason, there has been a method of making the tray 22 accommodating the CD-ROM disc D thinner, for example. At this time, a thin spindle motor is usually adopted according to the thickness of the tray 22. However, when the spindle motor 40 having the structure as shown in FIG.
The bearing spans of the two bearings 43 and 44 for supporting the bearing have been shortened, and there has been a problem that rotational runout increases.

On the other hand, the CD-ROM device 20 needs an outer box portion 21 for accommodating the slide mechanism, and when incorporated in a personal computer device, the recess 11 of the device body 10 is formed as shown in FIG. 9B. Top member 11 to be formed
a and the lower surface member 11b and the outer box portion 21 are laminated to form a multilayer structure. Further, since the upper surface member 11a and the lower surface member 11b of the concave portion 11 are necessary for maintaining the strength of the apparatus body 10, they cannot be omitted, and there is a limit to the thinning of the personal computer apparatus.

Therefore, the present invention provides an information processing apparatus for writing or reading information on an optical disk, which can minimize the rotational shake of the optical disk even if the housing for housing the optical disk is made thin. It is intended to be provided.

Further, according to the present invention, in an information processing apparatus for writing to or reading from an optical disk, the housing for housing the optical disk can be put in and out, and the information processing can be made thin without lowering the strength. The purpose is to provide a device.

[0012]

In order to solve the above problems and achieve the object, an information processing apparatus as set forth in claim 1,
A case-shaped tray, a damper provided on the inner bottom surface of the tray, a plate-shaped chassis attached to the inner bottom surface of the tray via the damper, and one end attached to the damper side of the chassis. A drive motor having a rotary shaft projecting from the chassis; a turntable mounted on the rotary shaft projecting from the chassis to detachably hold an optical disk; and a turntable mounted to the chassis and held on the turntable. A pickup for irradiating an optical disc with a laser beam, the drive motor is fixed to the chassis, a first support portion rotatably supporting one end of the rotation shaft, and a bottom plate of the tray. And a second support portion that is provided so as to be tiltable to the outside and that rotatably supports the other end portion of the rotation shaft.

The information processing apparatus according to claim 2 is the second
A damper is inserted between the support portion of the above and the bottom plate of the housing, and the second support portion is supported by the housing via an elastic member. .

An information processing apparatus according to a third aspect of the present invention is characterized in that the drive motor is a brushless motor. An information processing apparatus according to claim 4, wherein a main body portion having a concave portion provided at a corner portion, a tray which is fitted in the concave portion and accommodates an optical disc to perform writing or reading, and the tray is provided in the main body portion. And a hinge that is pivotally supported so as to freely move in and out.

An information processing apparatus according to a fifth aspect is characterized in that a fixing mechanism is provided for fixing the tray in a state of being fitted in the main body. The information processing apparatus according to claim 6 is characterized in that a recognition means for recognizing that the tray is fitted in the main body is provided.

[0016]

As a result of taking the above-mentioned means, the following effects occur. An information processing apparatus according to the present invention is a drive having a plate-shaped chassis attached to an inner bottom surface of a tray having a housing shape, and a rotary shaft attached to the damper side of the chassis and having one end protruding from the chassis. The drive motor is provided with a first support portion fixed to the chassis and rotatably supporting one end of the rotation shaft, and the drive motor is provided so as to be tiltable from the bottom plate of the tray to the outside and to rotate. A second support portion that rotatably supports the other end portion of the shaft.
Therefore, it is not necessary to reduce the distance between the first support portion and the second support portion of the drive motor, that is, the bearing span, even if the tray is thinned. Therefore, it is possible to minimize the rotational shake of the drive motor.

On the other hand, according to the present invention, a main body portion having a concave portion at a corner portion, a tray which is fitted in the concave portion and accommodates an optical disk for writing or reading, and the tray is provided in the main body portion. And a hinge that pivotally supports it in and out. For this reason, a slide mechanism for taking the optical disk in and out of the main body, an outer box portion for accommodating the slide mechanism, and the like are unnecessary, and the housing can be made thin and lightweight. Further, since the tray forms a part of the bottom of the housing, the number of members forming the recess of the housing can be reduced, and further reduction in thickness and weight can be achieved.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a tray of a CD-ROM device incorporated in a personal computer device as an information processing device according to a first embodiment of the present invention along the line X--X in FIG. It is sectional drawing cut | disconnected and seen in the arrow direction. FIG. 2 is a sectional view of a spindle motor as a drive motor incorporated in this tray and its vicinity. In these figures, the same functional parts as those in FIGS. 10 to 12 are designated by the same reference numerals.

As shown in FIG. 1, the tray 22 as a housing
Is a bottom plate 30 and an outer frame portion 31 fixed to the bottom plate 30.
An opening 32 provided in the outer frame portion 31, a mechanical chassis 33 as a chassis arranged in the opening 32, and three dampers 34a to 34c for supporting the mechanical chassis 33 from the bottom plate 30. (34c is not shown).

The mechanical chassis 33 has a spindle motor 50 as a drive motor and a CD-R as an optical disk.
A pickup feed mechanism (not shown) that slides the pickup 41 for reading from the OM disc D in the direction of arrow B in the drawing is supported.

The spindle motor 50 has a cylindrical case 51 as shown in FIG. The first support portion 52 on the one end side of the case 51 has a small diameter and is attached to the mechanical chassis 33. A bearing 53 that supports a rotary shaft 60, which will be described later, is arranged on the first support portion 52.
The second support portion 54 on the other end side of the case is formed to have a small diameter and is formed so as to project from the bottom plate 30. The bearing 5 supporting the rotating shaft 60 is mounted on the second support portion 54.
5 are arranged. A stator 56 made of a permanent magnet is provided on the inner wall 51 a of the case 51.

Reference numeral 60 in the figure denotes a rotary shaft supported by bearings 53 and 55. The upper end of the rotary shaft 60 in the drawing is C
The D-ROM disc D is press-fitted into a turntable 60a which is fixed by chucking. Also,
A rotor 61 including a coil is provided between the bearings 53 and 55 of the rotating shaft 60. In the figure, 62 is the case 51.
A brush for supplying electric current to the rotor 61,
63 is provided on the rotary shaft 60 and is connected from the brush 62 to the rotor 61.
The commutator which transmits an electric current to is shown.

With such a configuration, the tray 22
Since the second support portion 54 is formed so as to project from the bottom plate 30 even if the thickness is reduced, the bearing span between the bearings 53 and 55 can be made large, and the rotational runout of the rotating shaft 60 can be minimized. You can

FIG. 3 is a sectional view of a CD-ROM device tray incorporated in a personal computer device as an information processing device according to the second embodiment of the present invention, taken along line XX in FIG. 3 is a cross-sectional view as seen in the direction of the arrow. FIG. 4 is a cross-sectional view of the spindle motor incorporated in this tray and its vicinity. In these drawings, the same functional parts as those in FIGS. 1 and 2 are designated by the same reference numerals. Therefore, detailed description of the overlapping portions will be omitted.

The difference between this embodiment and the first embodiment is that the second support portion 54 of the case 51 is connected to the bottom plate 30 via a damper 54a as an elastic member. With such a configuration, the same effects as those of the above-described first embodiment can be obtained, and the mechanical chassis 33 can be elastically supported by the damper 54a of the spindle motor 50, so that the three dampers 34a to 34c. Even if the damper 34a closest to the spindle motor 50 is omitted, the function of preventing vibration and impact can be exhibited. Therefore, the manufacturing cost can be reduced.

FIG. 5 shows the tray of the CD-ROM device incorporated in the personal computer device as the information processing device according to the third embodiment of the present invention along the line XX in FIG. 3 is a cross-sectional view as seen in the direction of the arrow. FIG. 6 is a sectional view of the spindle motor incorporated in this tray and its vicinity. In these drawings, the same functional parts as those in FIGS. 1 and 2 are designated by the same reference numerals. Therefore, detailed description of the overlapping portions will be omitted.

The difference between this embodiment and the first and second embodiments is that a spindle motor 70 of thrust gap brushless motor type as shown in FIG. 6 is used. As shown in FIG. 6, the spindle motor 70 has a cylindrical case 71 whose upper end is arranged at substantially the same height as the mechanical chassis 33 and whose lower end projects from the bottom plate 30. There is. A metal substrate 72 coaxially attached to the case 71 on the outer surface of the case 71.
Is provided. Further, the outer end portion of the metal substrate 72 is supported by the mechanical chassis 33 via the coupling member 72a. Further, flange portions 71a and 71b are formed around a second support portion 75 of a case 71, which will be described later, and are connected to the bottom plate 30 via a damper 75a.

The first support portion 7 is provided at the upper end of the case 71 in the figure.
3 is provided, and a bearing 74 that supports one end of a rotating shaft 80 described later is arranged. On the other hand, a second support portion 75 is provided at the lower end of the case 71 in the figure, and a bearing 76 that supports the other end of the rotating shaft 80 is arranged. A rotary shaft 80 is supported by the bearings 74 and 76, and a turntable 81 is press-fitted into the upper end of the rotary shaft 80.

A stator 78 composed of a coil is attached to the upper surface of the metal substrate 72 in the figure, and power is supplied from a printed pattern (not shown) on the metal substrate 72. On the other hand, a rotor 82 made of a permanent magnet is attached to the lower surface of the turntable 81 in the figure.

The mechanical chassis 33 is elastically supported on the bottom plate 30 via dampers 34b and 34c and a damper 75a of the spindle motor 70. With such a configuration, even when the spindle motor 70 of the thrust gap brushless motor type is used, the same effect as that of the first and second embodiments can be obtained.

FIGS. 7A and 7B are diagrams showing a fourth embodiment in which the present invention is applied to a personal computer device. In this figure, the same functional parts as those in FIG. 9 are designated by the same reference numerals.

In FIG. 7A, 90 is a device main body as a housing provided with a keyboard and the like, and 91 is a bottom surface, front face and side surface of the device main body 90 at a right front corner of the device main body 90 in the drawing. A concave portion formed by being opened to the inside, and 92 is a tray which is arranged in the concave portion 91 and accommodates the optical disc.
As shown in FIG. 7B, the tray 92 is rotatably supported by the device main body 90 by a connecting pin 93 as a hinge, and the device main body 90 and the tray 92 smoothly rotate in 93b. Shows a washer for. The tray 92 is provided with a lock mechanism 94 so that the tray 91 has a recess 91 in the main body 90.
It is fixed inside. In this state, the tray 92 forms a part of the bottom of the main body 90.

In FIG. 7A, 95 is a lock mechanism 9.
Eject switch for releasing No. 4, (b) of FIG. 7
Reference numeral 96 denotes a position detector that detects whether or not the tray 92 is accommodated in the recess 91 of the apparatus body 10. The position detector 96 is connected to a CD-ROM controller (not shown) so that the CD-ROM disc D can be rotated only when the tray 92 is accommodated in the recess 91. Further, the rotation of the CD-ROM disc D may be stopped when the lock mechanism 94 is released by operating the eject switch 95.

With this structure, the lock mechanism 94 is released by operating the eject switch 95, the tray 92 is pulled out as shown in FIG. 8, and the CD-
The ROM disk D can be loaded and unloaded.

As described above, the tray 92 is used in this embodiment.
The tray 92 can be pulled out without a slide mechanism provided by rotatably mounting in a recess 91 formed in the bottom of the apparatus main body 90. For this reason, the outer box portion for accommodating the slide mechanism becomes unnecessary, and the multi-layer structure required in the prior art is not taken. Therefore, it is possible to reduce the thickness and weight of the personal computer device having the built-in CD-ROM device and reduce the manufacturing cost. Further, since the tray 92 constitutes the bottom portion of the device body 90 when it is accommodated in the recess 91 of the device body 90, the recess 91
It is possible to reduce the number of members forming the.

The present invention is not limited to the above embodiments. That is, in the above embodiment, the CD-R
Although the case where the OM device is incorporated in the personal computer device has been described, the OM device may be applied to a single CD-ROM device or another information processing device. Also, the optical disc is a CD-
It is not limited to ROM, but may be a magneto-optical disk. Furthermore, the trays of the CD-ROM devices of the first to third embodiments may be applied to the CD-ROM device of the fourth embodiment. Of course, various modifications can be made without departing from the scope of the present invention.

[0037]

According to the present invention, it is not necessary to reduce the distance between the first support portion and the second support portion of the drive motor, that is, the bearing span, even if the tray is thinned. Therefore, it is possible to minimize the rotational shake of the drive motor.

On the other hand, according to the present invention, the slide mechanism for taking the optical disk in and out of the main body, the outer box portion for accommodating the slide mechanism, etc. are not required, and the housing can be made thin and lightweight. Further, since the tray forms a part of the bottom of the housing, the number of members forming the recess of the housing can be reduced, and further reduction in thickness and weight can be achieved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a tray of a CD-ROM device according to a first embodiment in which the present invention is applied to a personal computer device.

FIG. 2 is a cross-sectional view showing the vicinity of a spindle motor incorporated in the tray.

FIG. 3 is a vertical cross-sectional view of a tray of a CD-ROM device according to a second embodiment in which the present invention is applied to a personal computer device.

FIG. 4 is a cross-sectional view showing the vicinity of a spindle motor incorporated in the tray.

FIG. 5 is a vertical cross-sectional view of a tray of a CD-ROM device according to a third embodiment in which the present invention is applied to a personal computer device.

FIG. 6 is a cross-sectional view showing the vicinity of a spindle motor incorporated in the same device.

7A and 7B are diagrams showing a personal computer apparatus according to a fourth embodiment in which the present invention is applied to a personal computer apparatus, in which FIG. 7A is an overall perspective view and FIG.
-A sectional view taken along the line Y and viewed in the direction of the arrow.

FIG. 8 is an overall perspective view showing a state in which a tray of a CD-ROM device incorporated in the same device is pulled out.

9A and 9B are views showing a conventional portable personal computer device, in which FIG. 9A is an overall perspective view and FIG.

FIG. 10 is a plan view showing a tray incorporated in a general CD-ROM device.

11 is a cross-sectional view of the tray taken along the line XX in FIG. 10 and seen in the direction of the arrow.

FIG. 12 is a cross-sectional view showing the vicinity of a spindle motor provided in the tray.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Device main body 11 ... Recessed part 20 ... CD-ROM device 21 ... Outer box part 22 ... Tray 23 ... Guide groove 24 ... Eject switch 30 ... Bottom plate 31 ... Outer frame part 32 ... Opening part 33 ... Mechanical chassis 34a-34c ...
Damper 41 ... Pickup 50, 70 ... Spindle motor 51, 71 ... Case 52, 73 ... First
Support portion 53, 55, 74, 76 ... Bearing 54, 75 ... Second
Support parts 54a, 75a ... dampers 56, 78 ... stators 60, 80 ... rotary shafts 60a, 81 ... turntables 61, 82 ... rotor 62 ... brushes 63 ... commutator 72 ... metal substrate 72a ... coupling member 90 ... device body 91 ... Recessed portion 92 ... Tray 93 ... Connecting pin 93b ... Washer 94 ... Lock mechanism 95 ... Eject switch 96 ... Position detector

Claims (6)

[Claims] 1. A tray having a housing shape, a damper provided on an inner bottom surface of the tray, a plate-shaped chassis attached to the inner bottom surface of the tray via the damper, and the damper of the chassis. Drive motor having a rotary shaft mounted on the side thereof and having one end projecting from the chassis, a turntable mounted on the rotary shaft projecting from the chassis for detachably holding an optical disk, and the turn table mounted on the chassis. A pickup for irradiating the optical disc held on the table with a laser beam, the drive motor being fixed to the chassis, and a first support portion rotatably supporting one end of the rotation shaft; A second support portion that is provided so as to be tiltable outward from the bottom plate of the tray and that rotatably supports the other end portion of the rotation shaft. An information processing device characterized by: 2. The information processing apparatus according to claim 1, wherein a damper is inserted between the second support portion and the bottom plate of the housing. 3. The information processing apparatus according to claim 1, wherein the drive motor is a brushless motor. 4. A main body portion having a concave portion at a corner portion, a tray which is fitted in the concave portion and accommodates an optical disk for writing or reading, and a tray for pivoting the tray so that the tray can freely move in and out of the main body portion. An information processing apparatus comprising: a supporting hinge. 5. The information processing apparatus according to claim 4, further comprising a fixing mechanism for fixing the tray in a state fitted in the main body. 6. The information processing apparatus according to claim 4, further comprising a recognition unit that recognizes that the tray is fitted in the main body.