JP2006323958A - Optical disk device and manufacturing method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk device capable of both securing mechanical strength and reducing weight, and to provide a manufacturing method therefor. <P>SOLUTION: The optical disk device comprises: a rotation driving part for rotating an optical disk; an optical pickup for at least either recording or reproducing information in/from the optical disk; a tray to which the optical pickup is attached, and a case for holding the tray to be freely retractable, and a corner part 22 of the case is characterized by being constituted of at least three continuous faces (31, 32, 33) in which all the border lines with the adjacent faces are almost parallel to each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an optical disc apparatus that performs at least one of recording and reproduction of information with respect to an optical disc, and a method for manufacturing the optical disc apparatus.

  As optical disc apparatuses, CD-ROM / R / RW, DVD-ROM / RAM / R / RW, etc. have already been put into practical use, and application to various areas and development for high performance are being actively carried out. Particularly recently, along with the rapid market expansion of personal computers, the penetration rate of built-in optical disk devices in personal computers has increased. As a method for mounting an optical disk mounted on an electronic device, a method of pulling out a tray from a housing, attaching a disk to the tray, and mounting it again in the housing (hereinafter referred to as a tray method) is common. Hereinafter, the configuration of a conventional tray type optical disc apparatus will be described with reference to FIGS.

  FIG. 5 is an external view of a conventional optical disc apparatus. In FIG. 5, 1 is an optical disk device, 2 is a housing, 2a is an upper housing portion, 2b is a lower housing portion, 3 is a tray, 4 is an optical pickup module, 5 is a rail, 6a is a housing-side rail holding portion, 6b is a tray side rail holding portion, 7 is a spindle motor, 7a is a disk mounting portion, 8 is a metal cover, 8a is an opening, 9 is a carriage, 10 is a bezel, 11 is an eject button, and 12 is an optical pickup.

  6 is an external plan view of a housing in a conventional optical disc apparatus, FIG. 7 is an enlarged view showing a YY section shown in FIG. 6, and FIG. 8 is an enlarged view showing an XX section shown in FIG. It is. 6-8, 2 is a housing | casing, 2a is an upper housing | casing part, 2b is a lower housing | casing part, 21 is a bending process part, 22 is a corner part.

  The optical disk device 1 includes a housing 2 and a tray 3 that is held in the housing 2 so as to be able to appear and retract. As shown in FIG. 6, the housing 2 has a bag shape in which a metal upper housing portion 2 a and a lower housing portion 2 b are combined.

  As shown in FIGS. 7 and 8, the upper housing portion 2 a and the lower housing portion 2 b have a large concave shape in each of the YY cross section and the XX cross section. The corner part 22 of 2a and the lower housing | casing part 2b is comprised by two surfaces, and the bending process is performed by making the angle formed inside the two surfaces into about 90 degrees.

  An optical pickup module 4 is attached to the tray 3 from the back side. Rails 5 are movably provided on both sides of the tray 3, and the rails 5 are held by a tray-side rail holding portion 6 b provided integrally with the tray 3. In addition, in FIG. 5, although the rail 5 is provided only in one side part, the same rail may be provided in the other side part. The upper housing portion 2a and the lower housing portion 2b are firmly fixed to each other using a locking means and a spiral which are not shown.

  The optical pickup module 4 includes at least a spindle motor 7 that rotates the optical disk, a metal cover 8 that has an opening 8a from the spindle motor 7 to the outer periphery, and a carriage 9 that is partially exposed from the opening 8a. The carriage 9 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 7 by a feed motor (not shown).

  Reference numeral 10 denotes a bezel provided on the front surface of the tray 3, and the bezel 10 is configured to have a size enough to close the opening of the housing 2. The carriage 9 is equipped with 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. There is a fixed circuit board at the back of the housing 2, and a signal processing IC, a power supply circuit, and the like are mounted on the circuit board. A flexible printed circuit board that is electrically connected to circuit boards (not shown) provided on the tray 3 is formed in a substantially U shape, and an external connector is connected to a power / signal line provided in an electronic device such as a computer. Connected. Then, power is supplied into the optical disc apparatus through the external connector, an external signal is guided into the optical disc apparatus, or an electric signal generated by the optical disc apparatus is sent to an electronic device or the like. The bezel 10 provided on the front end surface of the tray 3 is provided with an eject button 11, and when the eject button 11 is pressed, the engagement portion provided on the housing 2 and the engagement provided on the tray 3 are engaged. The tray 3 can be pulled out from the housing 2 so that the optical disk can be attached and detached.

  With the recent miniaturization of personal computers, optical disk devices are required to be thin and light. In particular, a built-in optical disk device mounted on a notebook personal computer or an external optical disk device is highly demanded to be excellent in mechanical strength and light in weight for convenient carrying. The relationship between mechanical strength and weight reduction is contradictory, and it is generally the case that pursuing mechanical strength hinders weight reduction, and the pursuit of weight reduction hinders mechanical strength.

As a prior example, there is (Patent Document 1) and the like.
JP-A-8-138366

  In order to reduce the thickness or weight of the optical disk device, it is indispensable to reduce the thickness and weight of the components 2 constituting the optical disk device, particularly the housing 2 having a large weight occupying ratio in the optical disk device 1. For thinning and weight reduction of the housing 2, generally, a method such as using a high-strength material to reduce the thickness of the material or changing to a material having a low specific gravity such as magnesium or a magnesium alloy is used. It is done.

  However, in these cases, inconvenience may occur in the bent portion 21 in which the press working is performed at approximately 90 ° or exceeding approximately 90 °.

  9 is an external plan view of a housing in a conventional optical disc apparatus, FIG. 10 is an enlarged view showing a YY section shown in FIG. 9, and FIG. 11 is an enlarged view showing an XX section shown in FIG. It is. 9 to 11, 2 is a housing, 2a is an upper housing portion, 2b is a lower housing portion, 21 is a bent portion, and 22 is a corner portion. 9 to 11 show a state after changing the material of the housing in the conventional optical disc apparatus.

  For example, conventionally, aluminum or an aluminum alloy was used as the material of the housing 2 and the thickness was changed to 0.5 mm. However, a lighter material such as magnesium or magnesium alloy can be changed. When the thickness is reduced to 0.4 mm or the like by changing to a high-strength one, cracks and cracks as shown in FIGS. 10 and 11 may occur in the bent portion 21 where the press working has been performed. is there.

  In such a state, the original strength is not obtained, and an internal load on the center of the main plane portion of the housing 2 or a suction during rotation of the disc causes deflection inside the optical disc apparatus.

  The present invention solves the above-described problem, and even when the casing material is a light material or the casing thickness is reduced, the bent portion of the casing is cracked or cracked. It is an object of the present invention to provide an optical disc apparatus and a method for manufacturing the optical disc apparatus that can achieve both of ensuring the mechanical strength and reducing the weight.

  The present invention includes a rotation drive unit that rotates an optical disc, an optical pickup that records and / or reproduces information with respect to the optical disc, a tray with the optical pickup attached thereto, and a housing that holds the tray in a retractable manner. The optical disk apparatus is characterized in that the corner portion of the housing is configured by at least three continuous surfaces in which all boundary lines with adjacent surfaces are substantially parallel.

  Also, a method for bending a housing, wherein the corner portion of the housing is constituted by at least three continuous surfaces whose boundary lines with adjacent surfaces are all substantially parallel to each other. Is the method.

  According to the above configuration, the angle formed inside the adjacent surfaces forming the corner portion of the casing can be increased by the above configuration, so that one bend is formed when the corner portion is formed from the metal flat plate to the casing. The bending angle with respect to the processed portion can be reduced, and the load and stress applied to the bent portion can be reduced.

  As a result, even if the case material is made of a lightweight material or the case thickness is reduced, the bending part of the case will not be cracked or cracked, ensuring mechanical strength. And an optical disc device capable of achieving both weight reduction and a method for manufacturing the optical disc device can be realized.

  According to a first aspect of the present invention, there is provided a rotary drive unit for rotating an optical disc, an optical pickup for recording or reproducing information with respect to the optical disc, a tray equipped with the optical pickup, and a tray that can be moved in and out. An optical disk device comprising: a housing, wherein a corner portion of the housing is composed of at least three continuous surfaces whose boundary lines with adjacent surfaces are all substantially parallel. The corners of the housing are formed on the inner side of the adjacent surfaces that form the corners of the housing by being composed of at least three continuous surfaces where the boundary lines with the adjacent surfaces are all substantially parallel. This makes it possible to reduce the bending angle for a single bent portion when forming a corner portion from a metal flat plate to the casing, and to reduce the load and stress applied to the bent portion. Can be reduced. As a result, even if the case material is made of a lightweight material or the case thickness is reduced, the bending part of the case will not be cracked or cracked, ensuring mechanical strength. It is possible to realize an optical disc apparatus capable of achieving both weight reduction and weight reduction.

  The invention according to claim 2 is an angle formed between at least three surfaces constituting the corner portion of the casing, and an arbitrary surface and a surface adjacent to the arbitrary surface and constituting the same corner portion. The optical disk apparatus according to claim 1, wherein all of the angles are approximately 135 ° or more. Conventionally, an angle of approximately 90 ° is formed by the fact that the angle formed between the arbitrary surface constituting the corner portion and the inner surface of the same corner portion adjacent to the arbitrary surface is approximately 135 ° or more. It is possible to reduce the load or stress to less than half of the load or stress applied to the bent portion when performing.

  When the invention according to claim 3 is defined as the first surface, the second surface, and the third surface in the sequential order, there are three at least three surfaces constituting the corner portion of the housing. The angle formed inside the first surface and the second surface is approximately 135 °, and the angle formed inside the second surface and the third surface is approximately 135 °. An optical disc apparatus according to claim 1. The angle formed inside the first surface and the second surface is approximately 135 °, and the angle formed inside the second surface and the third surface is approximately 135 °. The angle formed inside the first surface and the second surface constituting the corner portion and the angle formed inside the second surface and the third surface can both be increased. It becomes possible to reduce the bending angle at the time of press processing with respect to two bending portions, and to reduce the load and stress applied to the bending portion.

  The invention according to claim 4 is characterized in that at least three surfaces constituting the corner portion of the casing are three, and the second surface sandwiched between the first surface and the third surface is a quadrangle. An optical disc apparatus according to any one of claims 1 to 3. When the second surface is a quadrangle, the press working for forming the bent portion of the housing from the metal flat plate is facilitated, and the configuration of the present invention can be easily formed.

  According to the fifth aspect of the present invention, there are three at least three surfaces constituting the corner portion of the housing, and at least three surfaces constituting the corner portion of the housing, and each of the three surfaces is in a sequential order. When the first surface, the second surface, and the third surface are defined, the quadrangle forming the second surface is the boundary line length between the first surface and the second surface, or the second surface and the second surface. 5. The optical disk device according to claim 1, wherein one side is constituted by the boundary line length of the three surfaces, and the remaining one side has a length of 1.5 mm or more. The quadrangle forming the second surface has one side constituted by the boundary line length between the first surface and the second surface, or the boundary line length between the second surface and the third surface, and the other side is When the length is 1.5 mm or more, the press working for forming the bent portion of the housing from the metal flat plate is facilitated, and the configuration of the present invention can be easily formed.

  A sixth aspect of the present invention is the optical disc apparatus according to any one of the first to fifth aspects, wherein the casing is formed of at least one of magnesium or a magnesium alloy. By implementing the present invention when using at least one of magnesium or magnesium alloy as a material for forming the housing, it is possible to perform under a high temperature environment that is conventionally required when performing press work exceeding approximately 90 ° or approximately 90 °. No processing is required. Therefore, distortion and warpage due to thermal expansion of the material do not occur without processing in a high temperature environment.

  The invention according to claim 7 is a method for bending a housing, wherein the corner portion of the housing is constituted by at least three continuous surfaces whose boundary lines with adjacent surfaces are all substantially parallel. A method of manufacturing an optical disc device according to any one of claims 1 to 6. By forming the corner portion of the casing with at least three continuous surfaces whose boundary lines with adjacent surfaces are all substantially parallel, they are formed inside the adjacent surfaces forming the corner portion of the casing. Since the angle can be increased, it is possible to reduce the bending angle with respect to one bent portion when forming a corner portion from a metal flat plate to the casing, thereby reducing the load and stress applied to the bent portion. be able to. As a result, even if the case material is made of a lightweight material or the case thickness is reduced, the bending part of the case will not be cracked or cracked, ensuring mechanical strength. It is possible to realize a method of manufacturing an optical disc device that can achieve both weight reduction and weight reduction.

(Embodiment 1)
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is an external view of an optical disc apparatus according to an embodiment of the present invention, and is a view in which a tray 3 is pulled out from a housing 2. In FIG. 1, 1 is an optical disk device, 2 is a housing, 2a is an upper housing portion, 2b is a lower housing portion, 3 is a tray, 4 is an optical pickup module, 5 is a rail, 6a is a housing-side rail holding portion, 6b is a tray side rail holding portion, 7 is a spindle motor, 7a is a disk mounting portion, 8 is a metal cover, 8a is an opening, 9 is a carriage, 10 is a bezel, 11 is an eject button, and 12 is an optical pickup.

  An optical disc apparatus according to an embodiment of the present invention configured as described above will be described.

  In FIG. 1, the housing 2 is configured in a bag shape by combining an upper housing portion 2a and a lower housing portion 2b. The upper housing portion 2a and the lower housing portion 2b are firmly fixed to each other, preferably using a spiral. The constituent material of the housing 2 is made of a metal material such as iron, iron alloy, aluminum, aluminum alloy, magnesium, magnesium alloy, or a resin material. Moreover, the upper housing part 2a and the lower housing part 2b may be made of the same material or different materials. Moreover, the average thickness of each main plane part of the upper casing part 2a and the lower casing part 2b is between 0.2 mm and 1.6 mm, and when this average thickness is relatively thin, the upper casing part 2a and the lower housing | casing part 2b are comprised with a metal material, and form a metal plate by press work.

  In the present embodiment, in order to reduce the weight of the optical disc apparatus 1, the housing 2 is pressed with a metal sheet metal using at least one of magnesium or a magnesium alloy having an average thickness of about 0.2 mm to 0.7 mm. Although formed by processing, the average wall thickness is about 0.2 mm to 0.7 mm, and the metal sheet metal to be pressed is not limited to at least one of magnesium or a magnesium alloy.

  Reference numeral 3 denotes a tray that is provided in the housing 2 so as to be freely movable. The tray 3 is composed of a resin frame, and an optical pickup module 4 is provided. The optical pickup module (PUM) 4 includes an optical pickup 12 constituting an optical system, a spindle motor 7 for rotating the optical disk, and a control circuit (not shown). The optical pickup 12 performs at least one of recording and reproduction of information on the optical disc by irradiating the optical disc with light.

  The spindle motor 7 has a disk mounting portion 7a for mounting and rotating the optical disk. There are tray-side rail holding portions 6b on both sides of the tray 3, and both sides are fitted to the rail 5 so as to be slidable in the optical disk pull-out direction. The rail 5 is also fitted to rail guides provided on the inner surfaces of both sides of the housing 2 so as to be slidable in the direction of pulling out the optical disk, and the tray 3 can be pulled out of the housing 2 so that the optical disk can be attached and detached.

  There is a fixed control board at the back of the housing 2, and a signal processing system IC, a power supply circuit, and the like are mounted on the control board. A flexible printed circuit board that electrically connects control boards (not shown) provided on the tray 3 is formed in a substantially U shape, and an external connector is connected to a power / signal line provided in an electronic device such as a computer. Connected. Then, power is supplied into the optical disc apparatus via the external connector, an electric signal from the outside is guided into the optical disc apparatus, or an electric signal generated by the optical disc apparatus is sent to an electronic device or the like. The bezel 10 provided on the front end surface of the tray 3 is provided with an eject button 11. By pressing the eject button 11, an engaging portion (not shown) provided in the housing 2 and the tray 3 are provided. The engagement with the engaging portion (not shown) provided in the is released.

  Next, with respect to an example of the configuration of the present invention, there are three consecutive at least three surfaces that form the corner portion of the housing 2 and all the boundary lines with adjacent surfaces are substantially parallel, and each is in the sequential order. Are defined as the first surface, the second surface, and the third surface, the angle formed inside the first surface and the second surface, and the inside of the second surface and the third surface. A case where the formed angles are approximately 135 ° will be described.

  2 is an external plan view of a housing according to an embodiment of the present invention, FIG. 3 is an enlarged view showing a YY section shown in FIG. 2, and FIG. 4 is an XX section shown in FIG. It is an enlarged view shown. 2 to 4, 2 is a housing, 2a is an upper housing portion, 2b is a lower housing portion, 21 is a bent portion, 22 is a corner portion, 31 is a first surface, and 32 is a second surface. , 33 is a third surface, 41 is a virtual surface, and 43 is a virtual surface.

  The housing 2 is formed into a bag shape by combining the upper housing portion 2a and the lower housing portion 2b, and the upper housing portion 2a and the lower housing portion 2b are, as shown in FIG. Each cross section of the XX cross section has a large concave shape.

  The corner portions 22 of the upper housing portion 2a and the lower housing portion 2b are configured by at least three continuous surfaces whose boundary lines with adjacent surfaces are all substantially parallel. Thereby, since the angle formed inside the adjacent surfaces forming the corner portion 22 of the housing 2 can be increased, when the corner portion 22 is formed on the housing 2 from the metal flat plate, The bending angle with respect to the bent portion 21 can be reduced, and the load and stress applied to the bent portion 21 can be reduced. Therefore, no cracks or cracks are generated in the bending portion 21 of the housing 2.

  Here, substantially 90 degrees means the bending accuracy of the bending portion 21 formed by the first surface 31 and the second surface 32 and the bending formed by the second surface 32 and the third surface 33. Considering the bending accuracy of the processed portion 21, the angle is set to about 85 ° to 95 °.

  In the present embodiment, at least three surfaces constituting the corner portion 22 of the housing 2 are defined as three, and are defined as a first surface 31, a second surface 32, and a third surface 33, respectively, in sequential order. In this case, the angle formed inside the first surface 31 and the second surface 32 and the angle formed inside the second surface 32 and the third surface 33 were each approximately 135 °. By doing so, the angle formed on the inside of the first surface 31 and the second surface 32 constituting the corner portion 22 of the housing 2 and the inside of the second surface 32 and the third surface 33 are formed. Since both of the angles can be increased, it is possible to minimize the bending angle at the time of pressing with respect to one bending portion 21, and to reduce the load and stress applied to the bending portion 21. Can do.

  Here, about 135 ° is the same as the above-mentioned about 90 °, the bending accuracy of the bending portion 21 formed by the first surface 31 and the second surface 32, and the second surface 32 and the third surface. In consideration of the bending accuracy of the bending portion 21 formed by the surface 33, the angle is set to about 130 ° to 145 °.

  Further, at least three surfaces constituting the corner portion 22 of the housing 2 are three, and the second surface 32 sandwiched between the first surface 31 and the third surface 33 is a quadrangle, and the quadrangle is One side is constituted by the boundary line length between the first surface 31 and the second surface 32, or the boundary line length between the second surface 32 and the third surface 33, and the remaining one side has a length of 1.5 mm or more. It is preferable that By doing so, the press work which forms the bending process part of a housing | casing from a metal flat plate becomes easy, and the structure of this invention can be formed easily.

  The present invention is particularly effective when the casing 2 is formed of at least one of magnesium or a magnesium alloy. When the corner portion 22 is formed on the casing 2 from a metal flat plate, one bent portion is provided. It is possible to reduce the bending angle with respect to 21 and not only reduce the load and stress applied to the bending portion 21, but also a high temperature that has been necessary in the past when performing press work exceeding approximately 90 ° or approximately 90 °. No processing in the environment is required. Therefore, distortion and warpage due to thermal expansion of the material do not occur without processing in a high temperature environment.

  In the present embodiment, the corner portions 22 formed of three surfaces are provided in all the corner portions 22 of the upper housing portion 2a and the lower housing portion 2b. Any number may be provided. Preferably, as shown in FIG. 2, all the corner portions 22 of the upper housing portion 2a and the lower housing portion 2b are formed by three surfaces.

  In the present embodiment, the angle formed inside the first surface 31 and the second surface 32 and the angle formed inside the second surface 32 and the third surface 33 are approximately 135, respectively. However, the angle formed inside the first surface 31 and the second surface 32 and the angle formed inside the second surface 32 and the third surface 33 are limited to about 135 °, respectively. The angle may be different from each other. In this case, for example, when the angle formed inside the first surface 31 and the second surface 32 is 100 °, the angle formed inside the second surface 32 and the third surface 33 Is 170 °.

  Furthermore, in the present embodiment, as an example that the corner portion 22 of the housing 2 is configured by at least three continuous surfaces in which the boundary lines with adjacent surfaces are all substantially parallel, at least three There are three surfaces, and the angle formed inside the first surface and the second surface at that time and the angle formed inside the second surface and the third surface are approximately 135 °, respectively. Although the case has been described, at least three surfaces are not limited to three, and may be four or five.

  In the case where there are four at least three surfaces, the angle formed inside the first surface and the second surface, the angle formed inside the second surface and the third surface, Most preferably, the angles formed inside the surface and the fourth surface are approximately 150 °, respectively, but are not limited thereto.

  Further, when there are five at least three surfaces, the angle formed inside the first surface and the second surface, the angle formed inside the second surface and the third surface, The angle formed inside the third surface and the fourth surface and the angle formed inside the fourth surface and the fifth surface are most preferably approximately 157.5 °, It is not limited to that.

  As the angle formed between an arbitrary surface constituting the corner portion 22 of the housing 2 and an inner surface adjacent to the arbitrary surface and constituting the same corner portion becomes closer to 180 °, one bending process is performed. Although the bending angle at the time of pressing the portion 21 can be reduced and the load and stress applied to the bending portion 21 can be greatly reduced, it is preferably at least approximately 135 ° or more. By doing so, it is possible to reduce the load or stress to half or less of the load or stress that has been applied to the bent portion 21 when forming an angle of about 90 ° in the past.

  Thus, the corner part 22 of the housing | casing 2 is formed by the corner part 22 of the housing | casing 2 being comprised by the continuous at least 3 surface where all the boundary lines with an adjacent surface are substantially parallel. Since the angle formed inside the adjacent surfaces can be increased, when forming the corner portion 22 from the metal flat plate to the housing 2, the bending angle with respect to one bending portion 21 can be reduced. It becomes possible, and the load and stress given to the bending process part 21 can be reduced.

  Further, by using the bending method of the casing 2 in which the corner portion 22 of the casing 2 is configured by at least three continuous surfaces whose boundary lines with adjacent surfaces are all substantially parallel, the same as described above. In addition, since the angle formed inside the adjacent surfaces forming the corner portion 22 of the housing 2 can be increased, a single bend is formed when forming the corner portion 22 from the metal flat plate to the housing 2. The bending angle with respect to the processed portion 21 can be reduced, and the load and stress applied to the bent portion 21 can be reduced.

  Therefore, conventionally, in order to reduce the thickness or weight of the housing 2, use a high-strength material to reduce the thickness of the material, or change to a lighter specific material such as magnesium or a magnesium alloy. The mechanical strength, which has been a hindrance when using the method, can be secured, and even when the housing is made of a lightweight material or the housing is thin, the housing is bent. It is possible to realize an optical disc apparatus and a method of manufacturing the optical disc apparatus that can achieve both ensuring of mechanical strength and weight reduction without causing cracks or cracks in the portion.

  The present invention relates to an optical disc apparatus capable of achieving both of ensuring of mechanical strength and weight reduction and performing at least one of recording and reproduction of information with respect to an optical disc, and a method of manufacturing the optical disc apparatus.

1 is an external view of an optical disc apparatus according to an embodiment of the present invention. FIG. 1 is an external plan view of a housing according to an embodiment of the present invention. The enlarged view which shows the YY cross section shown in FIG. The enlarged view which shows the XX cross section shown in FIG. External view of conventional optical disk device External plan view of a housing in a conventional optical disc apparatus The enlarged view which shows the YY cross section shown in FIG. The enlarged view which shows the XX cross section shown in FIG. External plan view of a housing in a conventional optical disc apparatus The enlarged view which shows the YY cross section shown in FIG. The enlarged view which shows XX cross section shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical disk apparatus 2 Housing | casing 2a Upper housing | casing part 2b Lower housing | casing part 3 Tray 4 Optical pick-up module 5 Rail 6a Chassis side rail holding part 6b Tray side rail holding part 7 Spindle motor 7a Disk mounting part 8 Metal cover 8a Opening 9 Carriage 10 Bezel 11 Eject button 12 Optical pickup 21 Bending portion 22 Corner portion 31 First surface 32 Second surface 33 Third surface 41 Virtual surface 43 Virtual surface

Claims (7)

A rotation driving unit that rotates the optical disc; an optical pickup that records or reproduces information with respect to the optical disc; a tray to which the optical pickup is attached; and a housing that holds the tray in a retractable manner. ,
The optical disk apparatus according to claim 1, wherein the corner portion of the casing is constituted by at least three continuous surfaces in which all boundary lines with adjacent surfaces are substantially parallel. All of the at least three surfaces constituting the corner portion of the casing, which are formed on the inside of the arbitrary surface and the surface constituting the same corner portion adjacent to the arbitrary surface, are approximately 135. 2. The optical disk apparatus according to claim 1, wherein the optical disk apparatus has a temperature equal to or greater than. When the at least three surfaces constituting the corner portion of the housing are three and are defined as the first surface, the second surface, and the third surface in the sequential order, respectively, the first surface and the second surface The angle formed inside the second surface is approximately 135 °, and the angle formed inside the second surface and the third surface is approximately 135 °. 2. An optical disk device according to item 1. The said at least three surface which comprises the corner part of the said housing | casing is three, and the 2nd surface pinched | interposed into the 1st surface and the 3rd surface is a quadrangle | tetragon. 4. The optical disc device according to any one of items 3. The at least three surfaces constituting the corner portion of the housing are three, the at least three surfaces constituting the corner portion of the housing are three, and the first surface in a sequential order, When defined as the second and third surfaces,
The quadrangle forming the second surface has one side constituted by the boundary line length between the first surface and the second surface, or the boundary line length between the second surface and the third surface. 5. The optical disc apparatus according to claim 1, wherein the remaining side has a length of 1.5 mm or more. The optical disc apparatus according to claim 1, wherein the casing is formed of at least one of magnesium and a magnesium alloy. A method of bending a housing,
The optical disk apparatus according to claim 1, wherein the corner portion of the housing is configured by at least three continuous surfaces in which all boundary lines with adjacent surfaces are substantially parallel. Production method.

Images