JP4207597B2 - Disk unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disk device for driving an optical disk (for example, CD-R / RW, DVD-R / -RW / RAM / + R / + RW, etc.) as a recording medium for recording a large amount of information in various computer systems.
[0002]
[Prior art]
In general, since a personal computer (hereinafter referred to as a personal computer) records information on an optical disk or reproduces information from the optical disk, a disk device that drives the optical disk is indispensable. As a cable.
[0003]
FIG. 11 shows the appearance of a notebook personal computer with a built-in disk device. Usually, the disk device 101 is built in the side portion of the personal computer main body 100, and the bezel 103 of the disk tray 102 is moved by a switch operation or a command from the personal computer main body. Then, the user of the personal computer pulls out the disc tray 102 and loads the optical disc D (for example, Patent Document 1).
[0004]
In general, a desktop computer has a large volume, so it is possible to use a large-sized disk device. However, a disk device built into such a notebook computer is extremely thin. A head unit having an optical pickup configured to record information on or reproduce information from an optical disk is incorporated in the disk tray, and electric components such as a semiconductor integrated circuit element that controls drive control and signal processing of the head unit are installed. The mounted wiring board and mechanism elements are incorporated. In particular, it is preferable from the viewpoint of improving reliability that a semiconductor integrated circuit element that handles a weak signal is incorporated in a disk tray to minimize the wiring distance.
[0005]
Because of this tendency, electrical parts and mechanism elements are densely arranged on the back side of recent disk devices so that information can be recorded on or reproduced from various optical disks. This is largely related to the performance improvement of the disk device.
[0006]
[Patent Document 1]
Japanese Patent Application No. 2002-171604
[0007]
[Problems to be solved by the invention]
By the way, the optical disk that can be handled by the disk device of such a notebook personal computer is usually up to CD-ROM / R / RW (read / write / append) and DVD-R / RW / RAM (write / append). It is extremely difficult to mount a function that can cope with the above), and the biggest factor is due to the thermal problem of the optical pickup element used for DVD-RW. That is, a high output red laser element of 650 nm is adopted as a standard for the optical pickup for DVD-RW, but the upper limit of the high temperature at which this high output red laser element can normally emit light is usually about 60 ° C. Yes, when the temperature rises (66 to 70 ° C.), the failure to stop the light emission occurs.
[0008]
Therefore, in order to avoid such a thermal problem, for example, in a component type DVD recorder with a large casing, an exhaust fan is provided on the back surface to forcibly cool the inside of the casing, Measures are taken to prevent the occurrence. However, in the disk device configured to be thin as described above, when the disk tray is accommodated in the chassis case at the time of loading, the disk tray is almost sealed by the chassis case, and air circulation surrounding the disk tray is performed. It was extremely difficult to cool the inside because there was no state.
[0009]
In a thin disk device, as described above, many electrical components are mounted on a disk tray or chassis case. In particular, microcomputer-based semiconductor integrated circuit elements generate heat of about 100 ° C., and data A semiconductor integrated circuit element (front-end processor) that reads and writes data generates high heat of 100 ° C. or higher. In a disk device having such a component that generates heat, the ambient temperature of the disk rises naturally, and a high-power red laser element cannot be used for the optical pickup. DVD-R / RW / RAM Cannot be realized.
[0010]
In addition, high temperatures such as those described above not only make it impossible to adopt parts with low heat resistance, but also cause thermal deformation of the mechanical elements, deterioration of lubricants, fluctuations in the operating standards of electrical components, and poor insulation. This reduces the reliability of the device.
[0011]
The present invention has been made in view of such a conventional problem, and forcibly removes the air inside the disk device, which is at a high temperature, to the outside, and cools electrical components and mechanism elements mounted on the disk tray or chassis case. As a result, it is possible to provide a disk device that can be operated stably even with a component that requires consideration for high heat, such as a high-power red laser element, and that does not show thermal effects over time. To do.
[0012]
[Means for Solving the Problems]
Therefore, the present invention solves the above problems by means described below. That is, according to the first aspect of the present invention, in a disk apparatus in which a disk tray loaded with a recording medium is moved forward / backward in a chassis case to load / unload , the corner of the inner corner of the disk tray is A motor fan unit is disposed in the space, and a side surface of the disk tray is formed with a window hole and a concave groove that communicates with the window hole and opens at the front end of the disk tray in the longitudinal direction. By facing the opening of the casing of the motor fan unit, the concave groove becomes an air exhaust path or air intake path attracted by the motor fan unit, and exhaust or air intake from the clearance gap formed between the bezel and the air This forcibly cools electrical components and mechanism elements mounted on the disk tray.
[0013]
According to a second aspect of the present invention, there is provided a disc apparatus in which a disc tray loaded with a recording medium is advanced / retracted in a chassis case for loading / unloading. In the state in which the motor fan unit is disposed on the disk tray and the disk tray is loaded at a fixed position, a window hole is formed at the same position facing each of the side surfaces of the guide rail, the support rail, and the base chassis. The motor fan unit casing opening communicates with the motor fan unit so that it becomes an air exhaust path or air intake path that is attracted by the motor fan unit, and forcibly cools electrical components and mechanism elements mounted on the disk tray. .
[0014]
According to a third aspect of the present invention, in the first aspect of the present invention, a through hole communicating with a concave groove formed in the longitudinal direction of the side surface of the disc tray is formed in the bezel.
[0015]
According to a fourth aspect of the present invention, in the first aspect of the present invention, a concave groove is formed along a guide rail mechanism that supports the disk so that it can be loaded / unloaded, and the concave groove is attracted by the motor fan unit. Make it an air exhaust passage or intake passage.
[0016]
According to a fifth aspect of the present invention, in the first or second aspect of the present invention, an electric system component having a high heat generation rate is disposed in the vicinity of the motor fan unit.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0018]
FIG. 1 is a perspective view showing an external appearance of a disk apparatus 1 embodying the present invention. A disk tray 2 is formed in a shallow dish shape to accommodate an optical disk, and a spindle motor 3 arranged immediately below in the center thereof. A turntable 4 fixed to the drive shaft is disposed, and a center hole of the optical disk is clamped by a clamp head 5 of the turntable 4 so as to transmit a rotational force. Reference numeral 6 denotes a head unit, which is reciprocally moved in the diameter direction of the disk tray 2 by a driving mechanism formed on the back surface of the disk tray 2, and a laser beam is irradiated onto the optical disk from the beam lens 6a. Further, a bezel 7 for trimming the exterior is attached to the front end of the disc tray 2, and a push button 8 and an indicator window 7a for releasing the loaded state of the disc tray 2 face the surface, and the disc tray 2 is locked. A through hole 7b is formed for forcibly releasing.
[0019]
As shown in FIG. 2, the disk tray 2 whose exterior is configured in this way is supported by guide rails 9 on both sides thereof in a loosely fitted state. The guide rails 9 are integrally formed by a base chassis 11 and a cover chassis 12. The chassis case 10 is slidably supported on a support rail 13 fixed to the side wall of the base chassis 11. Therefore, a guide rail mechanism is constituted by the guide rail 9 and the support rail 13, and when the disk tray 2 is loaded, both sides of the disk tray 2 are covered with the guide rail mechanism.
[0020]
FIG. 3 shows an arrangement state of electrical system components and mechanism elements formed on the back surface of the disk tray 2. A spindle motor 3 for rotating the optical disk, a head unit 6 and this are arranged at the center of the disk tray 2. A drive mechanism A mainly composed of a sled motor 14 and a gear unit 15 serving as a power source for reciprocating the head unit 6 in the radial direction of the optical disk is disposed. A wiring board P on which electronic components such as the semiconductor integrated circuit elements S1, S2, and S3 are mounted is disposed and fixed on the rear side of the driving mechanism A, and ejected at a corner of the front end corner of the disk tray 2. / A lock mechanism B is provided.
[0021]
The head unit 6 is usually provided with a beam lens 6a, a drive system mechanism thereof, and an optical unit for guiding a laser beam emitted from the light emitting element 6b to a carriage formed by die casting or the like. The light emitting element 6b corresponds to the type of the optical disk to be driven. As described above, when DVD-RW is also a target of driving, a high output red laser element of 650 nm is adopted. . In the case of the present embodiment, the microcomputer integrated semiconductor element S1 that generates particularly large heat, the semiconductor integrated circuit element S2 that controls transmission and reception of signals between the personal computer body and the disk device, and the semiconductor integrated circuit element S3 that reads and writes data are the same. Arranged and mounted as shown in the figure.
[0022]
As shown in FIG. 4, the electrical components and mechanism elements incorporated in the back surface of the disc tray 2 in this way are protected when the disc tray 2 is unloaded, because the structure is exposed to the outside. The bottom cover 16 is fixed with screws. Further, by grounding the bottom cover 16, electrostatic and magnetic influences can be avoided.
[0023]
Next, in the disc tray 2 configured as described above, the motor fan unit F that is the main component of the constituent elements of the present invention is disposed in the space formed in the corner corner on the back side. . This portion is a so-called dead space in which no mechanical elements are disposed, and is adjacent to the outer peripheral wall of the disc tray 2, and therefore has an advantage that an exhaust passage or an intake passage can be easily formed.
[0024]
FIG. 5 shows an attachment state of the motor fan unit F, and FIG. 6 shows an assembly state. In the figure, a motor fan unit F has a bracket 17a extending from a casing 17, and the bracket 17a is screwed to the back surface of the disc tray 2 to fix the main body. At this time, the bottom of the casing 17 coincides with the recessed portion 2a of the disc tray 2, and accurate positioning is possible. And the top part of the casing 17 is open | released and the opening 17b for forming an air path in one place of a surrounding wall is formed. Reference numeral 18 denotes a shielding plate for preventing a so-called shortcut on the suction side and the discharge side of the air flow generated by the motor fan unit F so that efficiency is not lowered.
[0025]
The configuration of the motor fan unit F arranged on the disc tray 2 in this way is apparent from FIG. That is, in the figure, reference numeral 19 denotes a yoke member fixed to the inner peripheral bottom surface of the casing 17, and the induction coil 20 is fixed to the yoke member 19. On the other hand, a spindle 22 is rotatably attached to a spindle bearing 21 fixed to the center of the inner peripheral bottom surface of the casing 17, and a fan member 23 is fixed to the tip of the spindle 22. The fan member 23 includes a plurality of exhaust fans 23 a on the outer periphery, a yoke member 24 is fixed to the inner peripheral bottom surface, and a permanent magnet 25 is fixed to the yoke member 24. Therefore, the fan member 23 rotates by passing the induced current through the induction coil 20, and an air flow is generated by the exhaust fan 23a.
[0026]
Thus, by providing the motor fan unit F, it becomes possible to generate an air flow in the inner space on the back surface of the disk tray 2, but unless the high temperature air is effectively discharged to the outside. Don't be. Therefore, in the present invention, the configuration described below is adopted.
[0027]
That is, in the configuration of FIG. 7, a window hole 2b is formed on the side surface of the disc tray 2 so that the opening 17b of the casing 17 is exposed, and the concave groove 2c communicating with the window hole 2b is formed in the longitudinal direction of the side surface of the disc tray 2. The end of the groove 2c is opened at the tip of the disc tray. Thereby, the concave groove 2c becomes an air exhaust path attracted by the motor fan unit F, and the air flow indicated by the arrow in FIG. 7 flows down the concave groove 2c as shown in FIG. To the outside through a clearance gap formed between the bezel 7 and the bezel 7. Further, as a configuration for actively urging exhaust, a through hole 7c communicating with the concave groove 2c of the disc tray 2 may be formed in the bezel 7 as shown in FIG.
[0028]
FIG. 10 shows another configuration example for forming the exhaust passage. As shown in FIG. 10, window holes 9a, 13a, and 11a are formed on the side surfaces of the guide rail 9, the support rail 13, and the base chassis 11, respectively. When the disk tray 2 is loaded at a fixed position, the exhaust holes are formed so that the window holes 9a, 13a, and 11a communicate with the window hole 2b of the disk tray 2 and the opening 15b of the motor fan unit F. Thus, the air attracted by the motor fan unit F is exhausted directly from each window hole as shown by the arrow in FIG. In this case, the high-temperature air in the disk device 1 is exhausted into the personal computer main body, but the electrical components and mechanism elements can be sufficiently cooled by the airflow generated in the disk device 1. Furthermore, a more effective cooling effect can be obtained by providing an exhaust mechanism in the personal computer body.
[0029]
7 and 10, the semiconductor integrated circuit element (front end processor) S3 that generates high heat is disposed in the vicinity of the motor fan unit F, so that the air at the highest temperature can be effectively removed. The cooling efficiency can be improved. In the description of each of the above embodiments, the description has been made on the premise that the high-temperature air is discharged to the outside of the disk device 1, but conversely, the motor fan unit F is provided with an intake fan, and FIGS. An air flow in the direction opposite to the arrow shown in FIG. 10 may be generated to attract outside air into the disk device 1. In this case, the exhaust path described above becomes an intake path, and the taken-in air is discharged out of the disk device 1 through a slight gap at each corner.
[0030]
【The invention's effect】
As described above in detail, according to the invention described in claim 1 of the present invention, since the disk device is provided with the motor fan unit, the electric system parts and mechanism elements mounted on the disk tray by the exhaust action or the intake action thereof are provided. Because it is possible to forcibly cool down and prevent failures due to high temperatures, it is possible to stably operate even parts that require consideration for high heat, such as high-power red laser elements. Thus, a highly reliable disk device that does not show thermal influence over time can be obtained.
[0031]
According to the second aspect of the invention, the effect of the first aspect of the invention can be obtained, and the exhaust path or the intake path can be configured with a simple configuration, and a general-purpose configuration can be achieved.
[0032]
According to the invention described in claim 3 , in addition to the effect of the invention described in claim 1, exhaust efficiency or intake efficiency can be promoted by the through hole formed in the bezel.
[0033]
According to the fourth aspect of the invention, in addition to the effect of the first aspect of the invention, the groove formed along the existing guide rail mechanism in the conventional disk device is formed as an exhaust path or an intake path. The airflow resistance does not occur, and the efficiency of exhaust or intake air is not reduced.
[0034]
According to the invention described in claim 5 , in addition to the effect of the invention described in claim 1 or 2, the electric system component having a high heat generation rate is arranged in the vicinity of the motor fan unit. can do.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an external appearance of a disk device embodying the present invention.
2 is a perspective view for explaining the structure of FIG. 1; FIG.
3 is a diagram showing a configuration of a bottom surface of the disk tray of FIG. 1. FIG.
4 is an assembled perspective view showing the configuration of the bottom surface of the disk tray of FIG. 1. FIG.
5 is an assembled perspective view for explaining the configuration of the main part of FIG. 1; FIG.
FIG. 6 is an assembled perspective view showing a mounted state of the motor fan unit.
FIG. 7 is a cross-sectional view of an essential part for explaining an operation mode of the present invention.
FIG. 8 is a view for explaining the flow of exhaust airflow according to the present invention.
FIG. 9 is a view for explaining another example of the flow of the exhaust airflow according to the present invention.
FIG. 10 is a cross-sectional view of an essential part for explaining another configuration example of the present invention.
FIG. 11 is a perspective view showing an external appearance of a notebook computer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 .... Disk device 2 .... Disk tray 2a ... Recessed part 2b ... Window hole 3 .... Spindle motor 4 .... Turntable 5 .... Clamp head 6 .... Head unit 6a ... Beam lens 6b ... Light emitting element 7 .... Bezel 8 ...・ Push button 9 ・ ・ ・ ・ ・ ・ Guide rail 9a ・ ・ ・ Window hole 10 ・ ・ ・ ・ ・ Chassis case 11 ・ ・ ・ ・ ・ Base chassis 11a ・ ・ ・ ・ Window hole 12 ・ ・ ・ Cover chassis 13 ... Support rail 13a ... Window hole 14 ... Thread motor 15 ... Gear unit 16 ... Bottom cover 17 ... Casing 17a ... · Bracket 17b ··· Opening 18 ··· Shield plate 1 ... Yoke member 20 ... Induction coil 21 ... Spindle bearing 22 ... Spindle 23 ... Fan member 23a ... Exhaust fan 24 ...・ Yoke member 25 ... Permanent magnet A ... Drive mechanism B ... Eject / lock mechanism F ... Motor fan unit P ... Wiring board

Claims (5)

In a disk device in which a disk tray loaded with a recording medium is moved forward / backward in a chassis case to be loaded / unloaded,
A motor fan unit is disposed in a space at the corner on the back side of the disc tray, and a window hole is formed on the side surface of the disc tray and the end in the longitudinal direction is opened at the tip of the disc tray. A concave groove is formed, and the opening of the casing of the motor fan unit faces the window hole so that the concave groove becomes an air exhaust path or an air intake path attracted by the motor fan unit. A disk device characterized by forcibly cooling electrical system components and mechanism elements mounted on a disk tray by exhausting or sucking air from a clearance gap generated between the two . In a disk device in which a disk tray loaded with a recording medium is moved forward / backward in a chassis case to be loaded / unloaded,
  A motor fan unit is disposed in a space at the corner corner on the back side of the disc tray, and faces the respective sides of the guide rail, the support rail, and the base chassis when the disc tray is loaded at a fixed position. A window hole is formed at the same position so that the window hole and the opening of the casing of the motor fan unit communicate with each other so as to become an air exhaust path or an air intake path attracted by the motor fan unit. A disk device characterized by forcibly cooling mounted electrical components and mechanism elements. 2. The disk device according to claim 1, wherein a through hole communicating with a concave groove formed in a longitudinal direction of a side surface of the disk tray is formed in the bezel. A concave groove is formed along a guide rail mechanism that supports the disk tray so that it can be loaded / unloaded, and the concave groove is an air exhaust path or an air intake path attracted by a motor fan unit. The disk device according to claim 1. 3. The disk device according to claim 1, wherein an electric system component having a high heat generation rate is disposed in the vicinity of the motor fan unit.

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