JP4114531B2 - Optical disk device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is suitably mounted on an electronic device such as a stationary computer, and particularly preferably an optical disk device suitably mounted on a mobile electronic device such as a mobile computer (such as a notebook personal computer), a digital camera, or an electronic notebook. About.
[0002]
[Prior art]
A conventional optical disc apparatus with a built-in computer main body has a structure in which the entire apparatus is housed in a housing, and is generally mounted by incorporating it into the space of the computer main body. The mounting part was in the case and was attached to the computer body here.
[0003]
Hereinafter, a method for attaching a conventional optical disk apparatus to a portable electronic device will be described with reference to the drawings.
[0004]
FIG. 8 is a perspective view showing a configuration of a conventional optical disc apparatus with a built-in portable electronic device. 1 is an optical pickup, 2 is a main shaft, 3 is a sub shaft, 4 is a spindle motor, 5 is a base, 6 is a pickup module (PUM), 7 is a tray, 8 is a carriage, 9 is a rail, 10 is a housing, 11 Is an optical disk device, 12 is a mounting screw hole on the optical disk device side, 13 is a circuit board constituting a control circuit, etc., and 14 is a frame (viewed from the back side of the disk mounting portion).
[0005]
FIG. 9 is a diagram showing a method of attaching a conventional portable electronic device built-in type optical disc apparatus 11 to a portable electronic device. 15 is a portable electronic device, 16 is an attachment interposed for attachment, and 17 is an attachment side attachment hole.
[0006]
In FIG. 8, the optical pickup 1 reads and writes data of a disk attached to the spindle motor section while moving in the radial direction of the spindle motor 4 with the main shaft 2 and the sub shaft 3 as guides. The main shaft 2 and the sub shaft 3 are attached to the base 5 and form a pickup module 6 as a whole. The pickup module 6 is fixed to the tray 7. The tray 7 is slid with respect to the housing 10 by the rail 9. The tray 7 is pulled out from the housing 10 when the optical disk is attached / detached, and is stored in the housing 10 when reading / writing data. Further, the circuit board 13 constituting the control circuit or the like is attached to at least one of the tray and the casing. With the above configuration, the portable electronic device built-in type optical disc apparatus 11 is formed as a whole.
[0007]
In FIG. 9, the housing 10 of the optical disc apparatus main body 11 is provided with a mounting screw hole 12 to be attached to the computer main body. The portable electronic device 15 has an attachment 16 interposed for attachment. The optical disk is mounted by screwing between the attachment-side attachment hole 17 and the attachment screw hole 12 on the optical disc apparatus side and attaching the attachment 16 to the portable electronic device 15. Mount and fix the device.
[0008]
In the conventional disk device, as described above, the housing 10 functions to position the tray 7 mounted with the pickup module 6, the spindle motor 4 and the like via the rail 9, and the optical disk is moved to the portable electronic device 15. It had the function to fix to. The thinning of the optical disk device was basically handled by this structure.
[0009]
As a prior example, there are (Patent Document 1) (Patent Document 2) and the like.
[0010]
[Patent Document 1]
JP-A-8-171786 [Patent Document 2]
Japanese Patent Laid-Open No. 7-201044
[Problems to be solved by the invention]
However, in the conventional configuration, while the portable electronic device is increasingly required to be thin and light, the optical disk device itself is required to be thin and light. In particular, there is a high demand for weight reduction in the optical disc apparatus, and it is very difficult to reduce the weight in the above configuration.
[0012]
The present invention solves the above-described conventional problems, eliminates the need for a housing conventionally required for mounting inside another electronic device main body, and more particularly provides a stronger and lighter frame by providing a raised portion. Accordingly, an object of the present invention is to provide an optical disc apparatus that can be directly fixed while maintaining strength, and that can reduce the thickness and weight of the electronic device body to be mounted .
[0013]
[Means for Solving the Problems]
The present invention includes a frame, an optical pickup module fixed to the frame, and a circuit board that forms a control circuit fixed to the frame, and a carriage attached to the optical pickup module is provided on the surface of the frame on the disk mounting side. Ridges are provided on the outer side of the maximum diameter of the disk, and the ridges are provided on the sides thicker than the other sides of the frame in the vicinity and on the top of the sides. And having a top.
[0014]
As a result, the components of the optical disk device can be fixed to the electronic device main body without using a housing, and the optical disk device can be fixed to the electronic device main body while maintaining a strong and light frame by the raised portion. Therefore, the optical disk device can be significantly reduced in thickness and weight, and the electronic device main body can be reduced in thickness and weight.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 includes a frame, an optical pickup module fixed to the frame, and a circuit board forming a control circuit fixed to the frame. A ridge is provided on the outside of the maximum diameter of the disk in the direction of movement of the mounted carriage, and the ridge is thicker in the thickness direction than the other side of the frame in the vicinity and the upper part of the side. An optical disk device characterized by having a top portion provided on the frame, and a frame that is conventionally required when mounted on another electronic device body does not have to be provided. Since the strength can be maintained, the device can be reduced in thickness and weight.
Further, it is possible to reinforce and strengthen a part of the outer periphery of the through hole of the frame without interfering with the disk when the disk is mounted.
[0016]
The invention according to claim 2 can be further reduced in weight by the optical disk device according to claim 1, wherein the ridge is provided with one or a plurality of through holes in the top .
[0026]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0027]
FIG. 1 is a perspective view of an optical disk device according to an embodiment of the present invention as viewed from the front surface, and FIG. 2 is a perspective view of the optical disk device according to an embodiment of the present invention as viewed from the back surface with the cover and connecting means removed. (The cover and the flat cable are omitted in FIG. 2). 3 is a diagram showing the configuration of the optical system of the optical disk apparatus according to one embodiment of the present invention, FIG. 4 is a perspective view of the optical disk apparatus according to one embodiment of the present invention as viewed from the back, and FIG. 5 is the present invention. FIG. 6 is a front view of the optical disk apparatus according to the embodiment of the present invention, FIG. 6 is a diagram illustrating another method for mounting the optical disk apparatus according to the embodiment of the present invention, and FIG. 7 is a drive eject of the optical disk apparatus according to the embodiment of the present invention. It is a figure showing an example of arrangement of a switch.
[0028]
In FIGS. 1 and 2, reference numeral 18 denotes a frame for holding each part. The frame 18 is made of modified polyphenylene oxide, ABS resin, polycarbonate, ABS resin and a polycarbonate mixture, polybutylene terephthalate, polyoxymethylene, liquid crystal polymer, polyphenylene. A resin material such as sulfide, polystyrene, polyacetal, polyamide, or the like, or a resin material obtained by adding an inorganic substance such as glass or alumina to the resin material or a conductive resin material is used. In particular, modified polyphenylene oxide or a mixture of modified polyphenylene oxide and inorganic fiber or powder is preferable as the material of the frame 18, and by using these materials, rigidity can be increased, warpage can be prevented, and weight reduction can be further promoted. it can.
[0029]
In the present embodiment, the frame 18 is integrally formed of a single type of resin material, but other members are partially used, or a plurality of members made of different materials are arranged in a plane, The frame 18 may be configured by mechanically connecting these members or bonding them with an adhesive or the like. Furthermore, as described above, the frame 18 may be formed by bonding members made of the same material to each other. May be configured.
[0030]
Further, the frame 18 may be laminated by using a technique such as bonding a plurality of members (the same material or different materials) in the thickness direction. For example, the frame 18 may be configured by sandwiching a metal plate or ceramic plate having high rigidity between a pair of plate-shaped resin plates.
[0031]
Further, when the frame 18 is mainly composed of resin, a member capable of increasing rigidity such as a plate-shaped piece, a linear metal, or a ceramic material is dispersed in the resin, so that the frame 18 itself is lightweight. It is also possible to increase the rigidity while reducing the size.
[0032]
As described above, the frame 18 has the above-described configuration or is combined with the above-described configuration to achieve rigidity and weight reduction.
[0033]
The frame 18 has a through hole 18a, and a pickup module 19 is inserted therein. The frame 18 is provided with a raised portion 18c raised from the front surface 18b toward the front surface 18b from the back surface 18d. The pickup module 19 is inserted into the through hole 18a from the back surface 18d, but the raised portion 18c covers the end of the pickup module 19 and is provided outside the maximum diameter of the disk to be loaded with the disk. Thereby, a thickness can be given to a part of the outer periphery of the through-hole 18a of the frame 18 without interfering with the disk when the disk is mounted, and it can be strengthened. Specifically, as shown in FIG. 2 , the mechanical strength can be increased by making the thickness L1 of the side portion 18e of the raised portion 18c thicker than the thickness L2 of the side portion 18f in the vicinity of the raised portion 18c. The side portion 18e of the raised portion 18c is provided integrally with the top portion 18g. That is, the raised portion 18c is composed of at least a side portion 18e and a top portion 18g. Moreover, the thickness L1 of the side part 18e is thicker than the thickness L3 of the top part 18g. In order to enhance the mechanical strength, it is desirable to make more than half of the side portion 18e constituting the raised portion 18c thicker than the thickness L2 of the adjacent side portion 18f. Further, the inner end portion 18h of the top portion 18g has an arc shape and constitutes a part of the through hole 18a. The top 18g is provided with one or a plurality of through holes 18i for weight reduction. Further, when the frame 18 is configured, the through hole 18i is considered in consideration of productivity.
Since the structure becomes simple and the frame 18 can be easily manufactured, it is preferable that the through hole 18i is not provided in order to improve productivity.
[0034]
Further, the surface 18b of the frame 18 is provided with a disk take-out recess 18j that makes it easy to put a finger between the disk and the frame 18 when the attached disk is removed. The range of the disk take-out recess 18j is set to 22 mm to 55 mm in the radial direction D from the axis center of the spindle motor 19e, and the depth of 12 mm to 26 mm in the circumferential direction is set to 1 mm to 2.5 mm. This facilitates the operation of taking out the small-diameter type disk.
[0035]
In the frame 18 configured as described above, the weight can be suppressed to 15 g or less while maintaining the strength, and the optical disc apparatus can be reduced in weight.
[0036]
The pickup module 19 is provided with a frame-shaped frame 19a and a cover 19b attached to the upper surface. The cover 19b is provided with a through hole 19c. The spindle motor 19e is attached to the frame 19a with screws or the like through the bottom plate 19d. The part of the spindle motor 19e where the disk is mounted protrudes from the through hole 19c of the cover 19b toward the surface 18b of the frame 19a.
[0037]
The carriage 20 is movably held by two substantially parallel shafts 19f and 19g fixed to the frame 19a.
[0038]
The motor 21 is fixed to the frame 19a, and rotates a rotating shaft 21b that is rotatably attached to the frame 19a via a gear group 21a. The rotating shaft 21 b is provided in the vicinity of the shaft 19 and is attached to the shaft 19 substantially in parallel. Moreover, the rotary shaft 21b is provided on the opposite side of the shaft 19g with respect to the shaft 19f. The rotating shaft 21b is provided with a spiral groove and is fitted with a guide 20a provided on the carriage 20. As the rotary shaft 21b rotates, the guide 20a and the carriage 20 move in both directions (arrow A shown in FIG. 1) along the shafts 19f and 19g. As described above, the motor 21, the rotating shaft 21b, and the gear group 21a as means for moving the carriage 20 are accommodated together on the opposite side of the shaft 19f from 19g.
[0039]
In the cover 19b of the pickup module 19, the range that substantially faces the range in which the carriage 20 moves is raised in a direction away from the carriage 20 with respect to the range that does not substantially face the range in which the carriage 20 moves, and the raised portion 19h. Is formed. The height of the raised portion 19 h is set so as not to interfere with the carriage 20 in the movement range of the carriage 20. As a result, a step is generated between the raised portion 19h of the cover 19b and the other portion, so that the cover 19b is strengthened. Therefore, even if the cover 19b is thinned, a decrease in strength can be minimized.
[0040]
The carriage 20 is provided with a frame 20b made of die-cast metal material or the like, and an optical system for reading and writing a disk is mounted on the frame 20b. FIG. 3 illustrates the configuration of the optical system mounted on the frame 20b.
[0041]
The DVD laser light emitted from the DVD semiconductor laser 20b that emits laser light having a wavelength of 677 nm or less is reflected by the reflecting mirror 20c to change the optical path, and then enters the collimating lens 20d to become parallel light. The parallel laser light passes through the prism 20e, changes the optical path by the rising prism 20f, passes through the quarter-λ plate 20g, converges by the objective lens 20h, and irradiates the disk 20i. The reflected light from the disk 20i passes through the objective lens 20h and the 1 / 4λ plate 20g, changes its direction with the rising prism 20f and the prism 20e, converges with the collimating lens 20j, enters the laminated prism 20k, and changes its direction. It enters the sensor 20l.
[0042]
On the other hand, the CD laser light emitted from the CD semiconductor laser 20m emitting laser light having a wavelength of 765 nm to 795 nm passes through the laminated prism 20k, enters the collimating lens 20j, becomes parallel light, and enters the prism 20e. The direction is changed by the prism 20e and the rising prism 20f, the light passes through the ¼λ plate 20g, converges by the objective lens 20h, and irradiates the disk 20i. The reflected light from the disk 20i passes through the objective lens 20h and the 1 / 4λ plate 20g, changes its direction by the rising prism 20f and the prism 20e, converges by the lens 20i, enters the laminated prism 20k, and changes its direction. 20l.
[0043]
The rising prism 20f, the 1 / 4λ plate 20g, and the objective lens 20h are configured on the actuator 22. The actuator 22 is attached to the carriage 20 via a damper 22a. The actuator 22 includes an actuator coil 22b. The actuator coil 22b dynamically corrects the movement of the laser beam on the disk to move the actuator 22, and the objective lens 20h is moved to correct the position of the laser beam.
[0044]
The objective lens 20h faces the surface 18b side of the frame, and the entire movable range exists within the range of the through hole 19c.
[0045]
The frame-shaped frame 19a of the pickup module 19 is provided with a mounting portion 19i, which is fixed to the frame 18 via a vibration damping damper 19j. The vibration damping damper 19j is made of an elastic material, and specifically, butyl rubber or silicon rubber is used. At least three or more attachment portions 19i are provided at substantially equal intervals. In particular, providing at least one portion of the attachment portion 19i in the vicinity of the spindle motor 19e is effective in preventing vibration of the spindle motor 19e.
[0046]
The circuit board is divided into a first circuit board 23 and a second circuit board 24. The first circuit board 23 has a polygonal shape, and the second circuit board 24 has an arc-shaped cutout 24a. It has a polygonal shape. The first circuit board 23 constitutes a circuit that performs signal control of laser light mainly for reading from and writing to the disk. The second circuit board 24 constitutes a circuit that mainly controls the spindle motor 19e, the motor 21 that moves the carriage 20, and the actuator 22.
[0047]
Further, the first circuit board 23 and the second circuit board 24 are respectively fixed to the back surface 18d opposite to the side on which the disk of the frame 18 is mounted, and the spindle motor 19e and the objective lens 20h are connected. They are provided on the left and right with a straight line as the boundary. In this way, the circuit board for controlling the optical disk apparatus is divided into two and fixed to the frame 18, so that the shape of the optical disk apparatus, that is, the shape of the frame 18 can be changed to an arbitrary shape suitable for an electronic device on which the optical disk apparatus is mounted. It is possible to improve the mounting property to the electronic device.
[0048]
In this embodiment, the circuit board is divided into two parts, but it may be divided into three parts or more.
[0049]
The first circuit board 23 is adjacent to the pickup module 19 on the back surface 18d side of the frame 18, and is attached to the shaft 19f side with respect to the spindle motor 19e. The first circuit board 23 has a plurality of notch-shaped locking portions 23d on the end side, and is locked with a plurality of hook-shaped locking portions 18k provided on the end side of the frame 18, and further includes screws. The fixing portion is fixed to the frame 18 by screwing. The locking portion 18k is integrally formed with the frame 18. However, the locking portion 18k or a part including the locking portion 18k is formed of another member of the same material or different material, and is screwed to a predetermined position of the frame 18. Alternatively, it may be attached mechanically by welding or shape fitting, or may be attached by bonding with an adhesive or the like. Two connectors 23 a and 23 b are attached to the first circuit board 23, and the long sides of the connectors are arranged substantially parallel to the respective sides of the first circuit board 23. Both cable insertion portions of the connectors 23a and 23b face the outside of the board. The long side of the connector 23b is attached substantially parallel to the one side 23c facing the pickup module 19 of the first circuit board 23.
[0050]
The second circuit board 24 is adjacent to the pickup module 19 on the back surface 18d side of the frame 18, and is attached to the shaft 19g side with respect to the spindle motor 19e. Further, the second circuit board 24 is fixed to the frame 18 by locking with a plurality of hook-shaped locking portions 181 on the end side of the frame 18 and further screwing the screwing portions. The locking portion 18l is integrally formed with the frame 18, but the locking portion 18l or a part including the locking portion 18l is made of another member of the same material or different material, and is screwed to a predetermined position of the frame 18. Alternatively, it may be attached mechanically by welding or shape fitting, or may be attached by bonding with an adhesive or the like.
[0051]
Four connectors 24b, 24c, 24d, and 24e are attached to the second circuit board 24, and the long sides of the connectors 24b and 24c are arranged substantially in parallel with the respective sides of the second circuit board 24. Yes. The long side of the connector 24b is attached substantially in parallel to the one side 24f facing the pickup module 19 of the second circuit board 24. The cable insertion portion of the connector 24b faces the inside of the board, and the cable insertion portion of the connector 24c faces the outside of the board. The connector 24b is connected to the carriage 20 via a connecting means (not shown) such as a flat cable or a flexible substrate. The connector 24d is connected to a motor 21 that moves the carriage 20 via connection means (not shown) such as a flat cable or a flexible substrate. The connector 24e is disposed on the back surface of the second circuit board 24 (the surface opposite to the surface on which the connectors 24b, 24c, and 24d are disposed), and is connected to a flat cable, a flexible substrate, or the like (not shown). To the spindle motor 19e.
[0052]
It is also possible to configure the circuit of the first circuit board 23 and the circuit of the second circuit board 24 on one board so that one circuit board is provided. In this case, since no connection means for connecting the substrates is required, a more inexpensive configuration can be achieved.
[0053]
Further, it is possible to use one or a plurality of circuit boards as the circuit boards, and to fit these in or near the diameter of the disk. In this case, the area viewed from the front of the optical disk apparatus on which the disk is mounted can be minimized.
[0054]
The solenoid 25 is involved in the disk ejecting operation, and is fixed to the back surface 18 d side of the frame 18 between the first circuit board 23 and the pickup module 19.
[0055]
A cover 26 is attached to the back surface 18 d side of the frame 18 so as to cover the pickup module 19 and the second circuit board 24. If there is a separate method for shielding the second circuit board 24, the cover 26 need not shield the second circuit board 24. A part of the cover fixing portion 26a that fixes the cover 26 to the frame 18 is in direct contact with the ground portions of the first circuit board 23 and the second circuit board 24 or via a spring, and is screwed. Thus, the cover 26 is fixed and grounded, and the circuit board 23 and the second circuit board 24 are fixed.
[0056]
The cover 26 is provided with a plurality of through holes 26b for avoiding interference with a part of the components constituting the pickup module 19 or for weight reduction. The through-hole for making it possible can be omitted. In addition, the cover 26 is provided with a protruding portion 26 c that is pushed away from the second circuit board 24 in a range substantially facing the second circuit board 24. The protruding portion 26 c covers the connector 24 b on the second circuit board 24.
[0057]
The first circuit board 23 and the second circuit board 24 are connected by the connecting means 27 connected to the connector 23 b on the first circuit board 23 and the connector 24 b on the second circuit board 24. The connecting means 27 is disposed so as to cover at least part of the cover 26. The connecting means 27 is preferably a flat belt such as a flat cable or a flexible substrate in order to reduce the thickness of the optical disk apparatus. The connection means 27 connected to the connector 24b on the second circuit board 24 is folded back so as to bypass the end of the cover 26 in the vicinity of the connector 24b and pulled out to a position covering the cover 26. When the linear connection means cannot be used due to the positional relationship between the connector 23b on the first circuit board 23 and the connector 24b on the second circuit board 24, the connection means curved according to the connector positional relationship can be used. Wire connection can be made without hindering thinning of the optical disk device. Further, by providing the straight and flat strip connecting means 27 with a bent portion 27a, the connector 23b on the first circuit board 23 and the connector 24b on the second circuit board 24 can be obtained by an inexpensive linear connecting means. It becomes possible to correspond to the positional relationship of. The bent portion 27a is provided in the vicinity of at least one of the vertical bisector B of the long side of the connector 23b and the vertical bisector C of the long side of the connector 24b, so that the surface of the flat strip connecting means can be twisted. Lifting can be reduced. Further, the bent portion 27a is bent evenly, so that the contact portions with the connectors at both ends of the flat strip connecting means 27 are on the same side of the flat strip flat surface. It can be used for flat cable connectors. For example, FIG. 4 shows an example of two-fold bending. The flat strip-like connecting means 27 coming out of the connector 23b on the first circuit board 23 is bent at the bent portion 27a and once divided into the vertical bisect of the long side of the connector 23b. With respect to the line B, it is pulled out on the side opposite to the connector 24b, bent again at the bent portion 27a, and pulled out toward the connector 24b.
[0058]
A fixing means 27 b is used to fix the flat belt-like connecting means 27 to the cover 26. As the fixing means 27b, a method of fixing the connection means 27 to the cover 26 using an adhesive tape, or a flexible member as the fixing means 27b is joined to the cover with an interval, and between the joints. A method of detachably fixing through the connecting means 27 is preferable. It is also possible to bond the double-sided tape between the connecting means 27 and the cover 26.
[0059]
A through hole 18m is provided in the vicinity of the portion of the frame 18 that faces the first circuit board 23, and a push button switch 23f disposed on the first circuit board 23 passes through the through hole 18m and passes through the frame. 18 protrudes from the surface 18b. The movable direction of the push button 23g of the push button switch 23f is substantially perpendicular to the surface of the circuit board 23. Since the through hole 18m also has the purpose of reducing the weight of the frame 18, the dimension of the through hole 18m is determined including the required weight reduction.
[0060]
The push button switch 23f detects the open / close state of an openable / closable cover attached to the portable electronic device. However, the detected signal can be sent to the portable electronic device. The push button switch 23f can also be provided on the surface 18b of the frame 18.
[0061]
Further, the frame 18 has another through-hole 18n, and a part of the solenoid 25 is exposed when viewed from the surface 18b side of the frame 18.
[0062]
A brake 28 for stopping the rotation of the disk is provided on the surface 18b of the frame 18 as necessary. The brake 28 includes a case 28a, a movable portion 28b, a pad 28c, and a spring 28d. The case 28 a is molded integrally with the frame 18, but it may be formed of another member made of the same material as or different from the frame 18 and attached to a predetermined position of the frame 18. In FIG. 5, the moving shaft 28e of the movable portion 28b passes through the rotation center of the spindle motor 19e, and the movable range is restricted by the case 28a. The spring 28d is set so as to push out the movable portion 28b toward the radial center of the spindle motor 19e. The pad 28c is provided on the surface of the movable part 28b that faces the center of the spindle motor 19e in the radial direction, and is made of a material having a high friction coefficient with the disk material such as silicon rubber or felt. The surface of the pad 28c in contact with the disk has an inclination of an angle θ on a surface parallel to the disk with respect to the vertical surface of the moving shaft 28e. As a result, even if the outer shape of the disk varies, the amount of contraction of the spring 28d when the pad 28c is in contact with the disk is constant, and the pressing force of the pad 28c on the disk is constant. Specifically, the assumed variation width of the outer shape of the disk is 0.3 mm to 0.6 mm. The inclination amount θ and the width G of the surface of the pad 28c in contact with the disk are set so as to correspond to the assumed width of the disk diameter variation. The movable range of the movable portion 28b and the pad 28c is set to 58.5 mm to 61.5 mm at a distance F from the center of the spindle motor 19e to the center of the surface of the pad 28c, and G is set to 4 mm to 10 mm. The spring 28d is set so that a disk with a diameter of 120 mm is mounted and when the pad 28c hits for braking, a predetermined load (for example, about 10 g weight) is applied to the disk from the pad 28c. With such a setting, the rotation of the disk having a diameter of 120 mm can be sufficiently stopped. Further, the dimension H in the disk thickness direction of the surface of the pad 28c that contacts the disk is set to 4 mm to 10 mm. As a result, the side surface of the disk can be reliably brought into contact with the pad 28c when the disk is stopped, including the play in the thickness direction of the disk when the disk is loaded and the warp within the disk specifications. The movable portion 28b is provided with an inclined surface 28f, and the movement of the movable portion 28b in the radial direction of the spindle motor 19e can be obtained by pushing the inclined surface 28f with a push bar from the outside. Specifically, a push bar is provided on the movable disk cover for removing the disk of the portable electronic device, and when the movable disk cover is closed, the push bar pushes the inclined surface 28f, and the movable part 28b moves away from the disk 28g to release the brake. To do.
[0063]
The outer shape of the frame 18 is a shape that can hold the pickup module 19, the first circuit board 23, and the second circuit board 24, for example, surrounds the outer periphery of the pickup module 19, and the first circuit board 23 and the second circuit board 24 are The shape is set so that the cover holding part can be attached.
[0064]
The optical disk device fixing portion 29 protrudes from the side portion 18 e or the side portion 18 f of the frame 18, enters the inside of the frame 18 from the side portion of the frame 18, or is provided in the plane of the frame 18.
[0065]
The optical disk device fixing portion 29 is provided integrally with the frame 18, but the optical disk device fixing portion 29 or a portion including the optical disk device fixing portion 29 is formed by another member of the same material or different material, and a predetermined position of the frame 18 is formed. It may be attached mechanically by screwing, welding or shape fitting, or may be attached with an adhesive or the like.
[0066]
Further, it is preferable to provide about 2 to 10 optical disk device fixing portions 29, and it is particularly preferable to provide about 4 to 8. If the number of the optical disk device fixing portion 29 is one, it is difficult to attach with sufficient strength, and if it is more than ten, it takes time to attach and the productivity may be lowered.
[0067]
For example, in the case where the screw is set on the outer periphery of the frame 18 so as to be substantially perpendicular to the surface 18b of the frame 18 and fixed with the screw, the shape of the optical disk device fixing portion 29 is the side portion 18e of the frame 18 as shown in part D of FIG. Alternatively, a land 29a that protrudes substantially parallel to the surface 18b of the frame 18 from the side portion 18f and a hole 29b that is substantially perpendicular to the surface of the frame 18 through which screws are passed. Alternatively, as shown in part E of FIG. 2, the land 29c that enters the surface 18b of the frame 18 from the side 18e or the side 18f of the frame 18 and substantially perpendicular to the surface of the frame 18 for passing the screw. It consists of a hole 29d. The shape of the optical disk device fixing portion 29 is a flat plate protruding substantially perpendicular to the surface 18b of the frame 18 as shown in the D portion of FIG. 2, and screw holes are provided substantially perpendicular to the protruding flat plate, and the direction of the screw It is also possible to attach to the fixed portion of the portable electronic device facing the surface 18b of the frame 18 in parallel.
[0068]
Further, the shape of the optical disk device fixing portion 29 has a joint capable of thermal welding or ultrasonic welding, and the optical disk device can be fixed to a portable electronic device by thermal welding or ultrasonic welding.
[0069]
In addition, as another method of fixing the optical disc device and the portable electronic device, a shape (preferably a fixing portion having a flat portion) that can be fixed by an adhesive is installed in both the optical disc device and the portable electronic device, and at least It is also possible to use a method in which a part is fixed by an adhesive or a combination of an adhesive and another bonding means. In this case, by using an adhesive, the optical disk apparatus can be fixed even in a difficult place such as screwing, and the degree of freedom in design increases.
[0070]
FIG. 6 is a diagram showing another method for attaching the optical disk device according to the embodiment of the present invention as another method for fixing the optical disk device and the portable electronic device. The frame 18 of the optical disk apparatus is provided with an optical disk apparatus fixing portion 29, which is fixed by screwing or welding, or fixed by an adhesive, and one or more locking claws 30. Is provided. Further, a locking portion 31 with a locking claw 30 is provided on the inner surface of the portable electronic device 15. As a result, the locking claw 30 for locking the frame 18 of the optical disk device 11 and the locking portion 31 on the inner surface of the portable electronic device 15 are locked and then fixed by the optical disk device fixing portion 29, whereby the optical disk device 11 is portable. It is fixed to the inner bottom surface of the information terminal 15. With this mounting method, it is possible to reduce the number of screwing points by using partly engaging claws and improve the assemblability.
[0071]
FIG. 7 is a diagram showing an example of the arrangement of drive eject switches in the present embodiment. In order to take out the disc, a drive eject switch 32 provided in the portable electronic device 15 is operated. As a result, the movable disk cover 33 provided in the computer main body is opened, and a control operation such as termination of the application being executed or stop of the spindle motor is performed. In the conventional technology, the drive eject switch is provided on the optical disc apparatus side. However, a mechanism for holding the drive eject switch by attaching the drive eject switch not to the optical disc apparatus but to the portable electronic device main body in this way. Since it can be omitted from the optical disk device side, the size can be reduced, and the entire computer can also be reduced in size.
[0072]
In the optical disk device configured as described above, each member is attached to the portable electronic device by using the casing 10 as in the conventional case, and each member is attached to the frame 18 and the frame 18 is directly attached to the portable electronic device. Therefore, the casing 10 is not necessary, and a portable electronic device that is thinner and lighter than a portable electronic device to which a conventional optical disk device is attached can be provided.
[0073]
Note that the optical disk device of the present embodiment can be attached not only to portable electronic devices but also to fixed electronic devices.
[0074]
The optical disc apparatus as shown in the above example can realize 135 g or less (preferably 120 g or less, more preferably 100 g or less). By mounting such an optical disc apparatus on an electronic device, the electronic device itself can be downsized. I can do it.
[0075]
The optical disc apparatus according to an embodiment of the present invention is particularly useful in a configuration in which a disc having a diameter of 110 mm to 130 mm can be mounted.
[0076]
【The invention's effect】
As described above, the present invention includes a frame, an optical pickup module fixed to the frame, and a circuit board that forms a control circuit fixed to the frame. A ridge is provided on the outside of the maximum diameter of the disk in the direction of movement of the mounted carriage, and the ridge is thicker in the thickness direction than the other side of the frame in the vicinity and the upper part of the side. By having the top part provided on the main body, it is not necessary to use a case that was conventionally required when mounting on other electronic equipment bodies, and the raised part can become a strong and lightweight frame and maintain strength, The device can be made thinner and lighter.
Further, it is possible to reinforce and strengthen a part of the outer periphery of the through hole of the frame without interfering with the disk when the disk is mounted.
[Brief description of the drawings]
FIG. 1 is a perspective view of an optical disk device according to an embodiment of the present invention as viewed from the front surface. FIG. 2 is a perspective view of the optical disk device according to an embodiment of the present invention as viewed from the back surface with the cover and connecting means removed. FIG. 3 is a diagram showing a configuration of an optical system of an optical disc apparatus according to an embodiment of the present invention. FIG. 4 is a perspective view of the optical disc apparatus according to the embodiment of the present invention as viewed from the back side. FIG. 6 is a front view of the optical disc apparatus in the embodiment. FIG. 6 is a diagram showing another method for attaching the optical disc apparatus in the embodiment of the invention. FIG. 7 is a diagram showing the drive eject switch of the optical disc apparatus in the embodiment of the invention. FIG. 8 is a perspective view showing a configuration of a conventional portable electronic device built-in type optical disc apparatus. FIG. 9 is a diagram showing a conventional portable electronic device built-in type optical disc apparatus. Figure [EXPLANATION OF SYMBOLS] showing a kick installation in a portable electronic device
DESCRIPTION OF SYMBOLS 1 Optical pick-up 2 Main shaft 3 Sub shaft 4 Spindle motor 5 Base 6 Pick-up module 7 Tray 8 Carriage 9 Rail 10 Case 11 Optical disk apparatus 12 Mounting screw hole 13 on the optical disk apparatus side Circuit board 14 which comprises a control circuit etc. Frame 15 Carrying Electronic device 16 Attachment 17 Attachment side attachment hole 18 Frame 18a for holding each part Through hole 18b Front surface 18c Raised portion 18d Back surface 18e Side portion 18f Side portion 18g near raised portion Top portion 18h Inner end portion 18i Through hole 18j For removing a disk Recess 18k Locking portion 18l Locking portion 18m Through hole 18n Through hole 19 Pickup module 19a Frame 19b Cover 19c Through hole 19d Bottom plate 19e Spindle motor 19f, 19g Shaft 19h Raised portion 19 i Mounting portion 19j Anti-vibration damper 20 Carriage 20a Guide 20b Frame 20c Reflective mirror 20d Collimating lens 20e Prism 20f Rising prism 20g Objective lens 20i Disk 20j Collimating lens 20k Multilayer prism 20l Sensor 20m Semiconductor laser 21 for CD Motor 21a Gear group 21b Rotating shaft 22 Actuator 22a Damper 22b Actuator coil 23 First circuit board 23a, 23b Connector 23c One side 24 facing the pickup module of the first circuit board Second circuit board 24a Arc-shaped cutout 24b 24c, 24d, 24e Connector 24f One side 25 facing the pickup module of the second circuit board Solenoid 26 Cover 26a Cover fixing portion 26 b Through-hole 26c Protruding portion 27 Connecting means 27a Bending portion 27b Fixing means 28 Brake 28a Case 28b Movable portion 28c Pad 28d Spring 28e Moving shaft 28f Inclined surface 28g Disc 29 Optical disk device fixing portion 29a Land 29b Hole 29c Land 29d Hole 30 Locking Claw 31 Locking portion 32 Drive eject switch 33 Movable disc cover A Carriage moving direction B Long vertical bisector C of connector 23b Long vertical bisector D of connector 24b Projecting from frame side The vicinity of the land E The vicinity of the land that has entered the side of the frame F The distance from the center of the spindle motor 19e to the surface of the pad 28c G The dimension of the disk 28c in the circumferential direction H The dimension of the pad 28c in the disk thickness direction

Claims (2)

A frame, an optical pickup module fixed to the frame, and a circuit board forming a control circuit fixed to the frame; a carriage mounted on the optical pickup module on a surface of the frame on the disk mounting side And a ridge is provided outside the maximum diameter of the disk, the ridge being thicker in the thickness direction than the other side of the frame in the vicinity and the upper part of the side. An optical disk apparatus comprising: a top provided on the optical disk apparatus. 2. The optical disc apparatus according to claim 1 , wherein the raised portion is provided with one or a plurality of through holes in the top portion .

Images