JP2005196861A - Optical disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk drive the weight of which can be reduced without reducing strength. <P>SOLUTION: In this optical disk, a casing is formed into a bag shape by combining casing parts 2a and 2b. In the region of the casing part 2b in which a control board 12 is arranged, a hole 13 having an area slightly smaller than that of the control board 12 is disposed in the main planar part of the casing part 2b in accordance with the shape of the control board 12. That is, the control board 12 is arranged on the main planar part of the casing part 2b to cover the hole 13 disposed in the main planar part of the casing 2b. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an optical disc apparatus for recording / reproducing information on an optical disc by an optical pickup.

  As optical disk devices, CD-ROM, CD-R / RW, DVD, and the like have already been put into practical use, and application to various areas and development for high performance are being actively carried out. Particularly recently, with the rapid market expansion of personal computers, the penetration rate of built-in optical disk devices in personal computers has increased.

  A perspective view of a conventional optical disc apparatus is shown in FIG.

  In FIG. 10, reference numeral 1 denotes an optical disk device, and the optical disk device 1 has a housing 2 and a tray 3 held in the housing 2 so as to be freely retractable. The housing 2 is formed in a bag shape by combining metal housing portions 2 a and 2 b, and the tray 3 is projected and retracted from the opening of the housing 2. An optical pickup module 4 is attached to the tray 3 from the back side. Rails 3 a are provided on both sides of the tray 3 so as to be movable. The rails 3 a are held by rail holding portions 3 b provided integrally with the tray 3. In FIG. 10, the rail 3a is provided only on one side, but a similar rail may be provided on the other side.

  The housing part 2a and the housing part 2b are firmly fixed to each other using a locking means and a spiral not shown.

  The optical pickup module 4 has at least a spindle motor 5 for rotating the optical disk, a metal cover 6 provided with an opening 6a from the spindle motor 5 to the outer periphery, and a carriage 7 partially exposed from the opening 6a. Yes. The carriage 7 is movably held by a plurality of guide shafts provided in the optical pickup module 4, and can be moved toward and away from the spindle motor 5 by a feed motor (not shown). Reference numeral 8 denotes a bezel provided on the front surface of the tray 3, and the bezel 8 is configured to have a size enough to block the opening of the housing 2.

  The carriage 7 includes a light source such as a high-power laser diode, various optical members, and an objective lens that forms a light spot on the optical disk.

  FIG. 11 shows an external plan view of a conventional optical disc apparatus. FIG. 11A is a diagram viewed from the housing 2a side, and FIG. 11B is a diagram viewed from the housing 2b side. FIG. 12 is a diagram showing a state in which a control board for driving an optical disk is provided in a housing of a conventional optical disk apparatus. FIG. 12A is a view as seen from the housing 2a side, and FIG. 12B is a view as seen from the housing 2b side. Reference numeral 11 denotes a connector for attaching the optical disc apparatus 1 to an electronic device such as a personal computer. FIG. 13 is a plan view of the conventional optical disc apparatus with the tray pulled out from the housing.

  The optical disk apparatus is required to be small and lightweight with the recent miniaturization of personal computers. In particular, there is a high demand for weight reduction in a notebook personal computer so that it is convenient to carry. The weight reduction can be achieved to some extent by considering the material to be used, but the materials that can be used are relatively limited, and there is a natural limit to the weight reduction by selecting the material.

On the other hand, Japanese Patent Application Laid-Open No. H10-228707 describes a cover for an optical disk device provided with a hole for ventilation.
Utility Model Registration No. 2513567

  However, this optical disk apparatus is provided with a ventilation hole in the cover near the power circuit board housing part to keep the outside of the apparatus ventilated and to improve the heat dissipation effect, and does not directly lead to the weight reduction of the optical disk apparatus. .

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an optical disc apparatus that can be reduced in weight without causing a decrease in strength.

  The present invention has been made in order to solve the above-described problems, and includes a rotation driving means for rotating an optical disk, a carriage provided with at least a light source and various optical members, and a cover provided with a first opening. An optical pickup module having a second opening, a tray on which the optical pickup module is mounted so that at least a part of the optical pickup module is exposed from the second opening, and the tray can be moved in and out. An optical disk device comprising a housing held on the optical disk device, wherein a hole is provided in one or both of the main flat surface portions of the two housing portions constituting the housing.

  By providing a hole in one or both of the main flat surface portions of the two casing portions constituting the casing, the weight of the casing generally formed using a metal material can be reduced. The weight of the device can be reduced.

  According to the present invention, by providing a hole in one or both of the main flat surface portions of the two housing parts constituting the housing, the weight of the housing generally formed using a metal material is reduced. Therefore, it is possible to reduce the weight of the optical disc apparatus.

  According to a first aspect of the present invention, there is provided an optical pick-up module comprising a rotation driving means for rotating an optical disk, a carriage provided with at least a light source and various optical members, and a cover provided with a first opening. A tray having the second opening, to which the optical pickup module is attached so that a part of the optical pickup module is exposed from the second opening, and a housing for holding the tray in a retractable manner. In the optical disc apparatus, a hole is provided in either one or both of the main plane portions of the two casing portions constituting the casing.

  By providing a hole in one or both of the main flat surface portions of the two casing portions constituting the casing, the weight of the casing generally formed using a metal material can be reduced. The weight of the device can be reduced.

  According to a second aspect of the present invention, in the optical disc apparatus according to the first aspect of the present invention, in the main plane portion of one of the casing portions constituting the casing, the control board is disposed in a region where the control board is disposed. It is characterized by providing holes facing each other.

In the area where the control board is arranged, the control board secures the mechanical strength, so that it is possible to realize an optical disc apparatus that can be reduced in weight without causing a reduction in strength.

  According to a third aspect of the present invention, in the optical disc apparatus according to the first aspect, the shape of the control board is formed in a region where the control board is arranged in a main plane portion of one of the casing parts constituting the casing. It is characterized in that a hole is provided in accordance with.

  In the area where the control board is arranged, the control board secures the mechanical strength, so that it is possible to realize an optical disc apparatus that can be reduced in weight without causing a reduction in strength.

  According to a fourth aspect of the present invention, in the optical disc apparatus according to the first aspect, the shape of the control board is formed in a region where the control board is arranged in the main plane part of one of the casing parts constituting the casing. According to the present invention, a hole is provided, and a connecting portion is provided to divide the hole.

  By providing the connecting portion, it is possible to prevent a decrease in strength due to the provision of a hole in the main flat surface portion of the housing portion.

  According to a fifth aspect of the present invention, in the optical disc apparatus according to the first aspect of the present invention, a plurality of small diameters are arranged in a region where the control board is arranged in the main plane portion of one of the casing portions constituting the casing. It is characterized by providing a hole.

  By providing a plurality of small-diameter holes, it is possible to reduce the weight of the optical disc apparatus while maintaining a balance between securing the strength and reducing the weight.

  According to a sixth aspect of the present invention, in the optical disc apparatus according to the first aspect of the present invention, a plurality of main plane portions of one casing portion constituting the casing are provided in a region where the flexible printed circuit board is disposed. A small-diameter hole is provided, a large-diameter hole is provided in a region where the flexible printed circuit board is not disposed, and a large-diameter hole is provided in the main flat surface portion of the other casing portion.

  By providing a plurality of small-diameter holes in the area where the flexible printed circuit board is disposed, it is possible to reduce the weight of the optical disk device while ensuring a contact area between the flexible printed circuit board and the main flat surface portion of the housing. .

  According to a seventh aspect of the present invention, in the optical disc apparatus according to the first aspect of the present invention, a plurality of small-diameter holes are provided in the main flat surface portion of any of the casing portions constituting the casing. .

  With this configuration, it is possible to reduce the weight of the optical disc apparatus while ensuring a contact area between the flexible printed circuit board and the main plane portion of the casing.

  According to an eighth aspect of the present invention, in the optical disc apparatus according to any one of the first to sixth aspects, a sheet is pasted in the area where the hole is provided.

  By sticking the sheet to the area where the hole is provided, it is possible to prevent dust from entering the housing, and it is possible to prevent performance degradation of the optical disc apparatus due to the intrusion of dust. In addition, by attaching the sheet, it is possible to prevent the laser light emitted from the optical pickup module from being scattered by the holes and generating stray light.

  According to a ninth aspect of the present invention, in the optical disc apparatus according to the seventh aspect, the sheet is a conductive sheet.

By using a conductive sheet, the inside of the housing can be electrically shielded, and the performance of the optical disk device can be prevented from deteriorating due to electromagnetic waves entering the housing and peripheral devices due to the emission of electromagnetic waves from the inside of the housing Can be prevented from malfunctioning.

(Embodiment 1)
Embodiment 1 of the optical disk apparatus according to the present invention will be described below.

  FIG. 1 is a diagram showing a state in which a control board 12 for driving an optical disk is provided in the housing 2 of the optical disk apparatus according to Embodiment 1 of the present invention. FIG. 1A is a view seen from the housing 2a side, and FIG. 1B is a view seen from the housing 2b side. Reference numeral 11 denotes a connector for attaching the optical disc apparatus 1 to an electronic device such as a personal computer. In this embodiment, in the region where the control board 12 is disposed, a hole having an area slightly smaller than the area of the control board 12 is provided in the main plane part of the housing 2b in accordance with the shape of the control board 12. Yes. In other words, the control board 12 is disposed on the main plane portion of the casing portion 2b so as to cover the hole 13 provided in the main plane portion of the casing portion 2b. FIG. 2 is a plan view of the optical disc apparatus according to Embodiment 1 of the present invention with the tray pulled out from the housing.

  In the region where the control board 12 is disposed, the mechanical strength of the optical disk apparatus can be secured by the control board 12 even if the hole 13 is provided in the housing portion 2b. Can be realized.

  As the constituent material of the housing 2, a conductive material such as a metal material such as iron, iron alloy, aluminum, aluminum alloy, and magnesium alloy is preferably used. In addition, a structure in which each casing is made of a resin material and a highly conductive metal film is formed thereon using a technique such as electrodeposition may be used. Furthermore, each of the housing part 2a and the housing part 2b may be made of the same kind of material, or may be made of different materials. In addition, the average thickness of the main plane portion of each of the housing portion 2a and the housing portion 2b is between 0.3 mm and 1.6 mm, and when the average thickness is relatively thin, the housing portion 2a and the housing portion. The body part 2b is made of a metal material, and is formed, for example, by pressing a metal plate. Further, when the average thickness is relatively large, the casing 2a and the casing 2b are made of die casting (aluminum, magnesium alloy, etc.).

  FIG. 3 shows an external plan view of the optical disc apparatus according to Embodiment 1 of the present invention. FIG. 3A shows a situation in which the hole 13 is provided in the main plane part of the housing 2b, and FIG. 3B shows a state in which the sheet 14 is pasted so as to cover the hole 13. FIG. This sheet 14 prevents dust from entering the housing 2 by providing the holes 13 in the main plane portion of the housing 2b, and prevents electromagnetic waves from entering the housing 2. This is provided to prevent the emission of electromagnetic waves from the inside of the housing 2. In order to effectively prevent intrusion and emission of electromagnetic waves, the sheet 14 is preferably a conductive sheet.

(Embodiment 2)
The second embodiment of the optical disk apparatus according to the present invention will be described below.

  FIG. 4 shows an external plan view of the optical disk apparatus according to Embodiment 2 of the present invention. As shown in FIG. 4A, also in the present embodiment, in accordance with the shape of the control board 12, a hole having an area slightly smaller than the area of the control board 12 is provided in the main plane part of the housing part 2b. However, the hole 13 is divided into a plurality of sections by the connecting portion 15. By providing such a connecting portion 15, it is possible to reduce the weight of the optical disc apparatus by providing the hole 13 while increasing the mechanical strength of the optical disc apparatus 1 in the region where the hole 13 is provided.

  The constituent material of the housing 2 is the same as that of the first embodiment.

  FIG. 4B shows a state in which the sheet 14 is pasted on the main plane portion of the housing portion 2b so as to cover the hole 13. This sheet 14 prevents the intrusion of dust into the housing 2 by providing the holes 13 in the main flat surface portion of the housing portion 2b. It is provided to prevent discharge from the inside of the housing 2. In order to effectively prevent intrusion and emission of electromagnetic waves, the sheet 14 is preferably a conductive sheet.

(Embodiment 3)
Embodiment 3 of the optical disk apparatus according to the present invention will be described below.

  FIG. 5 shows an external plan view of an optical disc apparatus according to Embodiment 3 of the present invention. As shown in FIG. 5A, in the present embodiment, in the region where the control board 12 is arranged, a plurality of small-diameter circular holes 16 are formed in the housing portion 2b in accordance with the shape of the control board 12. It is provided in the main plane part. That is, the control board 12 is disposed on the main plane portion of the casing portion 2b so as to cover an area formed by a plurality of small-diameter circular holes 16 provided in the main plane portion of the casing portion 2b. By providing such a plurality of small-diameter circular holes 16, the mechanical strength of the optical disk apparatus 1 in the region where the circular holes 16 are provided is increased, and the optical disk apparatus 1 is reduced in weight by providing the circular holes 16. Is possible. The diameter and the number of the circular holes 16 can be determined as appropriate while maintaining a balance between securing the strength and reducing the weight. The shape of the hole is not limited to a circle, and may be another shape.

  FIG. 5B shows a state in which the sheet 14 is pasted so as to cover the region where the circular hole 16 is provided in the main plane portion of the housing 2b. This sheet 14 prevents the intrusion of dust into the housing 2 by providing the holes 13 in the main flat surface portion of the housing portion 2b. It is provided to prevent discharge from the inside of the housing 2. In order to effectively prevent intrusion and emission of electromagnetic waves, the sheet 14 is preferably a conductive sheet.

  The constituent material of the housing 2 is the same as that of the first embodiment.

(Embodiment 4)
Embodiment 4 of the optical disk apparatus according to the present invention will be described below.

  FIG. 6 shows an external plan view of the optical disc apparatus according to Embodiment 4 of the present invention. FIG. 6A shows an external plan view of the optical disk device according to the present embodiment as viewed from the housing portion 2a side, and FIG. 6B shows the optical disk device according to the present embodiment as the housing portion 2b. The external appearance top view seen from the side is shown.

  As shown in FIG. 6, in the present embodiment, holes 13 divided into several sections are provided in the main plane portion of the housing portion 2 a. In addition, a plurality of small-diameter circular holes 16 are provided in a region where the flexible printed circuit board 17 is disposed in the main plane portion of the housing portion 2b, and there are several sections in the region where the flexible printed circuit board 17 is not disposed. The hole 13 divided | segmented into is provided. A plurality of small-diameter circular holes 16 are provided in the area where the flexible printed circuit board 17 is arranged in the main plane part of the housing part 2b. The flexible printed circuit board 17 is placed on the main plane part of the housing part 2b. This is to secure a contact area between the flexible printed circuit board 17 and the main flat surface portion of the housing portion 2b, which is necessary for the arrangement. The diameter and the number of the circular holes 16 can be determined as appropriate while maintaining a balance between securing the strength and reducing the weight. The shape of the hole is not limited to a circle, and may be another shape.

FIG. 7 shows an external plan view of the optical disc apparatus according to Embodiment 4 of the present invention. In FIG. 7A, in the present embodiment, the hole 13 divided into several sections in the main plane portion of the housing portion 2a.
The mode that the sheet | seat 14 was affixed so that the area | region in which was provided may be covered is shown. Further, in FIG. 7B, in the present embodiment, a region in which the hole 13 divided into several sections is provided in the main plane portion of the housing portion 2b, and a plurality of small-diameter circular holes 16 are provided. A mode that the sheet | seat 14 was affixed so that the area | region provided might be covered is shown.

  The sheet 14 is provided with holes 13 in the main plane portion of the housing portion 2a, and holes 13 and circular holes 16 are provided in the main plane portion of the housing portion 2b so that dust can enter the housing 2. It is provided to prevent electromagnetic waves from entering the housing 2 and prevent electromagnetic waves from being released from the housing 2 while preventing the electromagnetic waves from entering the housing 2. In order to effectively prevent intrusion and emission of electromagnetic waves, the sheet 14 is preferably a conductive sheet.

  In the present embodiment, since the hole 13 is provided not only in the main flat surface portion of the housing portion 2b but also in the main flat surface portion of the housing portion 2a, the optical disk device 1 can be further reduced in weight. it can. Moreover, since it is covered with the sheet 14, it is possible to prevent the laser light emitted from the optical pickup module 4 from being scattered by the holes and generating stray light.

  The constituent material of the housing 2 is the same as that of the first embodiment.

(Embodiment 5)
The optical disk device according to the fifth embodiment of the present invention will be described below.

  FIG. 8 shows a plan view of the appearance of an optical disc apparatus according to Embodiment 5 of the present invention. FIG. 8A shows an external plan view of the optical disk device according to the present embodiment as viewed from the housing 2a side, and FIG. 8B shows the optical disk device according to the present embodiment with the housing 2b. The external appearance top view seen from the side is shown.

  As shown in FIG. 8, in the present embodiment, a plurality of small-diameter circular holes 16 are provided in the main plane portion of the casing portion 2a and the main plane portion of the casing portion 2b. Since a plurality of small-diameter circular holes 16 are provided in the area where the flexible printed circuit board 17 is arranged in the main plane part of the casing part 2b, the flexible printed circuit board 17 is arranged on the main plane part of the casing part 2b. It is possible to secure a contact area between the flexible printed circuit board 17 and the main flat surface portion of the housing portion 2b, which is necessary for the operation. The diameter and the number of the circular holes 16 can be determined as appropriate while maintaining a balance between securing the strength and reducing the weight. The shape of the hole is not limited to a circle, and may be another shape.

  FIG. 9 shows an external plan view of the optical disc apparatus according to Embodiment 5 of the present invention. FIG. 9A shows a state in which the sheet 14 is pasted so as to cover a region in which a plurality of small-diameter circular holes 16 are provided in the main plane portion of the housing portion 2a in the present embodiment. FIG. 9B shows a state in which the sheet 14 is pasted so as to cover a region where a plurality of small-diameter circular holes 16 are provided in the main plane portion of the housing 2b in the present embodiment.

  The sheet 14 is provided with the circular holes 16 in the main plane portion of the casing portion 2a and the main plane portion of the casing portion 2b, thereby preventing dust from entering the casing 2 and preventing electromagnetic waves from being generated in the casing. 2 is provided to prevent intrusion into the inside. In order to effectively prevent intrusion and emission of electromagnetic waves, the sheet 14 is preferably a conductive sheet.

  In the present embodiment, since the circular hole 16 is provided not only on the main flat surface portion of the housing portion 2b but also on the main flat surface portion of the housing portion 2a, the optical disk device 1 can be further reduced in weight. Can do. Moreover, since it is covered with the sheet 14, it is possible to prevent the laser light emitted from the optical pickup module 4 from being scattered by the holes and generating stray light.

  The constituent material of the housing 2 is the same as that of the first embodiment.

  The present invention is used as an optical disc apparatus for recording / reproducing information on an optical disc by an optical pickup, and the optical disc apparatus can be reduced in weight.

The figure which shows a mode that the control board for driving an optical disk is provided in the housing | casing of the optical disk apparatus based on Embodiment 1 of this invention. FIG. 2 is a plan view of the optical disc apparatus according to Embodiment 1 of the present invention with the tray pulled out from the housing. 1 is an external plan view of the optical disc apparatus according to Embodiment 1 of the present invention. External appearance plan view of the optical disc apparatus according to Embodiment 2 of the present invention External appearance plan view of an optical disc apparatus according to Embodiment 3 of the present invention External appearance plan view of an optical disc apparatus according to Embodiment 4 of the present invention External appearance plan view of an optical disc apparatus according to Embodiment 4 of the present invention External plan view of an optical disc apparatus according to Embodiment 5 of the present invention External plan view of an optical disc apparatus according to Embodiment 5 of the present invention A perspective view of a conventional optical disc apparatus External plan view of a conventional optical disc apparatus The figure which shows a mode that the control board for driving an optical disk is provided in the housing | casing of the conventional optical disk apparatus. A plan view of a conventional optical disc apparatus with the tray pulled out from the housing

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical disk apparatus 2 Case 2a, 2b Case part 3 Tray 3a Rail 3b Rail holding part 3c Opening 4 Optical pick-up module 5 Spindle motor 6 Cover 6a Opening 7 Carriage 8 Bezel 9 Optical disk 11 Connector 12 Control board 13 Hole 14 Sheet 15 Connection Part 16 Circular hole 17 Flexible printed circuit board

Claims (9)

Rotation driving means for rotating the optical disk, carriage provided with at least a light source and various optical members and movably provided, an optical pickup module having a cover provided with a first opening, and a second opening having the second opening In an optical disc apparatus comprising: a tray on which the optical pickup module is mounted so that at least a part of the optical pickup module is exposed from the opening of 2; An optical disc apparatus characterized in that a hole is provided in either one or both of the main flat surface portions of the two casing portions constituting. 2. The optical disc apparatus according to claim 1, wherein a hole is provided in a region where the control board is disposed in a main plane part of one casing part constituting the casing so as to face the control board. 2. The optical disc apparatus according to claim 1, wherein a hole is provided in a region where the control board is arranged in a main plane part of one casing part constituting the casing in accordance with a shape of the control board. . A hole is provided in a region where the control board is arranged in a main plane part of one casing part constituting the casing in accordance with the shape of the control board, and a connecting part is provided to divide the hole. The optical disc apparatus according to claim 1. 2. The optical disc apparatus according to claim 1, wherein a plurality of small-diameter holes are provided in a region where the control board is arranged in a main plane portion of one of the casing portions constituting the casing. A plurality of small-diameter holes are provided in a region where the flexible printed circuit board is disposed, and a large-diameter hole is formed in a region where the flexible printed circuit board is not disposed, of the main plane portion of one of the housing parts constituting the housing. 2. The optical disk apparatus according to claim 1, wherein a large-diameter hole is provided in the main flat surface portion of the other casing portion. 2. The optical disc apparatus according to claim 1, wherein a plurality of small-diameter holes are provided in a main flat surface portion of any of the casing portions constituting the casing. The optical disk apparatus according to claim 1, wherein a sheet is attached to a region where the hole is provided. 8. The optical disc apparatus according to claim 7, wherein the sheet is a conductive sheet.

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