US20080037408A1 - Optical disk device - Google Patents
Optical disk device Download PDFInfo
- Publication number
- US20080037408A1 US20080037408A1 US11/844,985 US84498507A US2008037408A1 US 20080037408 A1 US20080037408 A1 US 20080037408A1 US 84498507 A US84498507 A US 84498507A US 2008037408 A1 US2008037408 A1 US 2008037408A1
- Authority
- US
- United States
- Prior art keywords
- frame
- optical disk
- disk device
- fixing parts
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/04—Feeding or guiding single record carrier to or from transducer unit
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
- G11B33/121—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules the apparatus comprising a single recording/reproducing device
Definitions
- the present invention relates to an optical disk device preferably mounted on an electronic device such as a stationary computer. More particularly, the present invention relates to an optical disk device preferably mounted on a mobile electronic device such as a mobile computer (notebook personal computer or the like), a digital camera, an electronic notebook, etc.
- a mobile electronic device such as a mobile computer (notebook personal computer or the like), a digital camera, an electronic notebook, etc.
- a usual optical disk device contained in a computer main body ordinarily has a structure that the whole of the device is accommodated in a casing and the casing is attached to a space of the computer main body so that the optical disk device is attached to the computer main body.
- An attaching part is provided in the casing and attached to the computer main body.
- FIG. 8 is a perspective view showing the structure of the usual optical disk device contained in the portable electronic device.
- Reference numeral 1 designates an optical pick-up.
- 2 designates a main shaft.
- 3 designates a sub-shaft.
- 4 designates a spindle motor.
- 5 designates a base.
- 6 designates a pick-up module (PUM).
- 7 designates a tray.
- 8 designates a carriage.
- 9 designates a rail.
- 11 designates an optical disk device.
- 12 designates attaching tapped holes of an optical disk device side.
- 13 designates a circuit board forming a control circuit or the like.
- 14 designates a frame (seen from the back side of a disk attaching part)
- FIG. 9 is a diagram for showing a method for attaching the usual optical disk device 11 contained in the portable electronic device to the portable electronic device.
- Reference numeral 15 designates the portable electronic device.
- 16 designates an attachment provided for attaching the optical disk device to the portable electronic device.
- 17 designates attaching holes of an attachment side.
- the optical pick-up 1 moves in the diametrical direction of the spindle motor 4 through the main shaft 2 and the sub-shaft 3 as guides to read or write data on a disk attached to the spindle motor part.
- the main shaft 2 and the sub-shaft 3 are attached to the base 5 to form the pick-up module 6 as a whole.
- the pick-up module 6 is fixed to the tray 7 .
- the tray 7 slides relative to the casing 10 by the rail 9 .
- the tray 7 is pulled out from the casing 10 upon attaching and detaching the optical disk and is accommodated in the casing 10 upon reading and writing data.
- the circuit board 13 forming the control circuit or the like is attached to at least one of the tray or the casing.
- the above-described structure constitutes the optical disk device 11 contained in the portable electronic device as a whole.
- the attaching tapped holes 12 are provided for attaching the device to the computer main body.
- the attachment 16 is interposed for attaching the device to the portable electronic device.
- the attaching holes 17 of the attachment side are fixed to the attaching tapped holes 12 of the optical disk device side by screws to mount the attachment 16 on the portable electronic device 15 so that the optical disk device is mounted on and fixed to the portable electronic device.
- the casing 10 has functions, as described above, for positioning the tray 7 on which the pick-up module 6 or the spindle motor 4 or the like is mounted through the rail 9 and for fixing the optical disk to the portable electronic device 15 .
- An optical disk device whose thickness is reduced basically meets the above-described structure.
- JP-A-8-171786 and JP-A-7-201044 as described below are exemplified.
- the optical disk device itself has needed to be thinned or light in the usual structure.
- the optical disk device has extremely needed to be light.
- the weight of the optical disk device has been extremely hardly reduced.
- the present invention solves the above-described usual problem and it is an object of the present invention to provide an optical disk device that can realize a thin and especially light device.
- the present invention provides an optical disk device comprising a frame, an optical pick-up module fixed to the frame, and a circuit board forming a control circuit fixed to the frame, characterized in that the frame has fixing parts to other members.
- FIG. 1 is a perspective view showing an optical disk device according to one embodiment of the present invention from its front surface.
- FIG. 2 is a perspective view showing the optical disk device according to one embodiment of the present invention from its back surface with a cover and connecting means removed.
- FIG. 3 is a diagram showing the structure of the optical system of the optical disk device according to one embodiment of the present invention.
- FIG. 4 is a perspective view showing the optical disk device according to one embodiment of the present invention from its back surface.
- FIG. 5 is a front view of the optical disk device according to one embodiment of the present invention.
- FIG. 6 is a view showing another method for attaching the optical disk device according to one embodiment of the present invention.
- FIG. 7 is a view showing an example of the arrangement of a drive eject switch of the optical disk device according to one embodiment of the present invention.
- FIG. 8 is a perspective view showing the structure of a usual optical disk device contained in a portable electronic device.
- FIG. 9 is a view showing a method for attaching the usual optical disk device contained in the portable electronic device to the portable electronic device.
- FIG. 1 is a perspective view showing an optical disk device according to one embodiment of the present invention from its front surface.
- FIG. 2 is a perspective view showing the optical disk device according to one embodiment of the present invention from its back surface with a cover and connecting means removed (In FIG. 2 , a cover and a flat cable are omitted).
- FIG. 3 is a diagram showing the structure of the optical system of the optical disk device according to one embodiment of the present invention.
- FIG. 4 is a perspective view showing the optical disk device according to one embodiment of the present invention from its back surface.
- FIG. 5 is a front view of the optical disk device according to one embodiment of the present invention.
- FIG. 6 is a view showing another method for attaching the optical disk device according to one embodiment of the present invention.
- FIG. 7 is a view showing an example of the arrangement of a drive eject switch of the optical disk device according to one embodiment of the present invention.
- reference numeral 18 designates a frame for holding respective parts.
- a material with which the frame 18 is formed is composed of at least one of resin materials such as denatured polyphenylene oxide, an ABS resin, polycarbonate, a mixture of the ABS resin and polycarbonate, polybutylene terephthalate, polyoximethylene, liquid crystal polymer, polyphenylene sulfide, polystyrene, polyacetal, polyamide, etc. or a resin material by adding an inorganic material such as glass or alumina to the resin material or an electric conductive resin material.
- resin materials such as denatured polyphenylene oxide, an ABS resin, polycarbonate, a mixture of the ABS resin and polycarbonate, polybutylene terephthalate, polyoximethylene, liquid crystal polymer, polyphenylene sulfide, polystyrene, polyacetal, polyamide, etc.
- a resin material by adding an inorganic material such as glass or alumina to the resin material or an electric conductive resin material
- the denatured polyphenylene oxide or the mixture of the denatured polyphenylene oxide and inorganic fibers or powder is preferable. These materials are used so that rigidity can be improved and a curve prevention can be realized and a weight can be more reduced.
- the frame 18 is entirely Integrally formed with one kind of resin material, however, other materials may be partly used, or a plurality of members made of different materials may be arranged on a plane and these members may be mechanically connected together or bonded by an adhesive agent to form the frame 18 . Further, the members made of the same material may be connected together in the same manner as described above to form the frame 18 .
- a plurality of members may be laminated in the direction of thickness and laminated by a method of adhesion to from the frame 18 .
- a metal plate or a ceramic plate high in its rigidity may be sandwiched in between a pair of plate type resin plates to form the frame 18 .
- members such as plate pieces or wire shaped metal or ceramic materials capable of improving the rigidity may be dispersed in the resin to reduce the weight of the frame 18 itself and increase the rigidity.
- the frame 18 has the above structure or the combination of the above-described structures to realize the rigidity or the low weight.
- the frame 18 has a through hole 18 a into which a pick-up module 19 is inserted.
- an uplift part 18 c rising from a front surface 18 b is provided from a back surface 18 d to the front surface 18 b .
- the pick-up module 19 is inserted into the through hole 18 a from the back surface 18 d .
- the uplift part 18 c covers the end part of the pick-up module 19 and is provided outside the maximum diameter of the diameter of a mounted disk.
- a part of the outer periphery of the through hole 18 a of the frame 18 has a thickness to reinforce the through hole without interfering with the disk upon mounting the disk. Specifically, as shown in FIG.
- the thickness L 1 of the side part 18 e of the uplift part 18 c is made larger than the thickness L 2 of a side part 18 f near the uplift part 18 c so that a mechanical strength can be increased.
- the side part 18 e of the uplift part 18 c is provided integrally with a top part 18 g . That is, the uplift part 18 c is composed of at least the side part 18 e and the top part 18 g . Further, the thickness L 1 of the side part 18 e is larger than the thickness L 3 of the top part 18 g .
- a part not smaller than 1 ⁇ 2 times as much as the side part 18 e forming the uplift part 18 c is desirably larger than the thickness L 2 of the side part 18 f near the side part 18 e to increase the mechanical strength.
- the inner end part 18 h of the top part 18 g has a circular arc form to form a part of the through hole 18 a .
- On the top part 18 g one or a plurality of through holes 18 i are provided to reduce the weight.
- a disk taking out recess 18 j is provided for easily inserting fingers between the disk and the frame 18 upon detaching the attached disk.
- the range of the disk taking out recess 18 j is set to 22 mm to 55 mm in the diametrical direction D from the center of the axis of a spindle motor 19 e , to 12 mm to 26 mm in the circumference direction and to 1 mm to 2.5 mm in depth.
- the small diameter type disk can be easily taken out.
- the weight can be suppressed to 15 g or lower (preferably, 13 g or lower) to reduce the weight of the optical disk device.
- a frame 19 a and a cover 19 b attached to an upper surface are provided in the pick-up module 19 .
- a through hole 19 c is provided in the cover 19 b .
- the spindle motor 19 e is attached to the frame 19 a by screws or the like through a bottom plate 19 d . A part of the spindle motor 19 e on which the disk is mounted protrudes from the through hole 19 c of the cover 19 b to the front surface 18 b side of the frame 19 a.
- a carriage 20 is movably held by two substantially parallel shafts 19 f and 19 g fixed to the frame 19 a.
- a motor 21 is fixed to the frame 19 a to rotate a rotating shaft 21 b attached to the frame 19 a so as to freely rotate through a group of gears 21 a .
- the rotating shaft 21 b is provided in the vicinity of the shaft 19 f and attached substantially in parallel with the shaft 19 f .
- the rotating shaft 21 b is provided in an opposite side to the shaft 19 g with respect to the shaft 19 f .
- a spiral groove is provided in the rotating shaft 21 b .
- a guide 20 a provided in the carriage 20 is fitted thereto. When the rotating shaft 21 b rotates, the guide 20 a and the carriage 20 move in two directions (arrows A shown in FIG. 1 ) along the shafts 19 f and 19 g .
- the motor 21 , the rotating shaft 21 b and the group of gears 21 a as means for moving the carriage 20 are collectively accommodated in an opposite side to the shaft 19 g with respect to the shaft 19 f.
- a range substantially opposed to a range in which the carriage 20 moves rises toward a direction separating from the carriage 20 relative to a range that is not substantially opposed to the range in which the carriage 20 moves to form an uplift part 19 h .
- the height of the uplift part 19 h is set not to interfere with the carriage 20 in the moving range of the carriage 20 .
- a step is formed between the uplift part 19 h of the cover 19 b and a part except it to reinforce the cover 19 b . Accordingly, even when the thickness of the cover 19 b is reduced, the deterioration of strength can be suppressed to a minimum.
- the carriage 20 is provided with a frame 20 b formed by die-casting a metal material. On the frame 20 b , an optical system for reading or writing the disk is mounted. In FIG. 3 , an example of the structure of the optical system mounted on the frame 20 b will be described below.
- Laser beam for a DVD emitted from a semiconductor laser 200 for a DVD that emits the laser beam having wavelength of 677 nm or shorter is reflected by a reflecting mirror 20 c to change its optical path, and then enters a collimator lens 20 d to become parallel lights.
- the laser beam that becomes the parallel lights passes through a prism 20 e , changes their optical paths in a rise prism 20 f , passes a 1 ⁇ 4 ⁇ plate 20 g , and then converges on an objective lens 20 h and is applied to a disk 20 i .
- a reflected beam from the disk 20 i passes through the objective lens 20 h , the 1 ⁇ 4 ⁇ plate 20 g , changes its direction in the rise prism 20 f and the prism 20 e , converges on the collimator lens 20 j , is incident on a laminated prism 20 k to change its direction and is incident on a sensor 201 .
- a laser beam for a CD emitted from a semiconductor laser 20 m for a CD for emitting a laser beam having wavelength of 765 nm to 795 nm passes through the laminated prism 20 k , enters the collimator lens 20 j to be parallel lights and the parallel lights are incident on the prism 20 e .
- the parallel lights change their directions in the prism 20 e and the rise prism 20 f , pass the 1 ⁇ 4 ⁇ plate 20 g , converge on the objective lens 20 h and are applied to the disk 20 i .
- a reflected light from the disk 20 i passes through the objective lens 20 h , the 1 ⁇ 4 ⁇ plate 20 g , changes its direction in the rise prism 20 f and the prism 20 e , converges on the collimator lens 20 j , is incident on the laminated prism 20 k to change its direction and is incident on the sensor 201 . Further, on a front light monitor 300 , outgoing lights are partly incident and used to control the adjustment of a quantity of light of a light source.
- the rise prism 20 f , the 1 ⁇ 4 ⁇ plate 20 g and the objective lens 20 h are formed on an actuator 22 .
- the actuator 22 is attached to the carriage 20 through a damper 22 a .
- an actuator coil 22 b is formed on the actuator 22 .
- the actuator coil 22 b dynamically corrects the movement of the laser beam on the disk to move the actuator 22 , the objective lens 20 h and correct the position of the laser beam.
- the objective lens 20 h faces the front surface 18 b side of the frame and all movable range is located within the range of the through hole 19 c.
- the frame 19 a of the pick-up module 19 is provided with an attaching part 19 i that is fixed to the frame 18 through a vibration isolating damper 19 j .
- the vibration isolating damper 19 j is made of an elastic material, and, specifically, butyl rubber or silicon rubber is used.
- the attaching parts 19 i are provided at least three or more positions and at substantially equal intervals. Especially, at least one of the attaching parts 19 i is provided near the spindle motor 19 e to effectively prevent the vibration of the spindle motor 19 e.
- a circuit board is divided into a first circuit board 23 and a second circuit board 24 .
- the first circuit board 23 is formed in a polygonal shape.
- the second circuit board 24 is formed in a polygonal shape having an arcuate cut out part 24 a .
- the first circuit board 23 forms a circuit for controlling a signal of the laser beam for mainly reading and writing the disk.
- the second circuit board 24 forms a circuit for controlling the motor 21 or the actuator 22 for mainly moving the spindle motor 19 e or the carriage 20 .
- first circuit board 23 and the second circuit board 24 are respectively fixed to the back surface 18 d opposite to side of the frame 18 on which the disk is mounted.
- the first circuit board 23 and the second circuit board 24 are respectively provided in the right and left sides with respect to a straight line connecting the spindle motor 19 e and the objective lens 20 h as a boundary.
- the circuit board for controlling the optical disk device is divided into two and fixed to the frame 18 .
- the form of the optical disk device that is, the form of the frame 18 can be configured to an arbitrary form adapted to an electronic device on which the optical disk device is mounted. Further, the mounting characteristics of the optical disk device on the electronic device can be improved.
- the circuit board is divided into two, however, the circuit board may be divided into three.
- the first circuit board 23 is adjacent to the pick-up module 19 in the back surface 18 d side of the frame 18 and attached to the shaft 19 f side with respect to the spindle motor 19 e .
- a plurality of cut-out type engaging parts 23 d are provided and engaged with a plurality of hook shaped engaging parts 18 k provided in the end side of the frame 18 .
- screw fastening parts are screwed and fixed to the frame 18 .
- the engaging parts 18 k are formed integrally with the frame 18 .
- the engaging parts 18 k or parts including the engaging parts 18 k may be composed of separate members made of the same material or different materials.
- the engaging parts 18 k or the parts including the engaging parts 18 k may be mechanically connected to the prescribed positions of the frame 18 by screwing, welding or fitting in forms or stuck and fixed thereto by an adhesive agent or the like.
- two connectors 23 a and 23 b are attached to the first circuit board 23 .
- the long sides of the connectors 23 a and 23 b are respectively arranged substantially in parallel with the sides of the first circuit board 23 .
- the cable insert parts of the connectors 23 a and 23 b are respectively directed outward of the board.
- the long side of the connector 23 b is attached substantially in parallel with one side 23 c of the first circuit board 23 facing the pick-up module 19 .
- the second circuit board 24 is adjacent to the pick-up module 19 in the back surface 18 d side of the frame 18 and attached to the shaft 19 g side with respect to the spindle motor 19 e .
- the second circuit board 24 is fixed to the frame 18 by engaging with a plurality of hook shaped engaging parts 18 l located in the end side of the frame 18 and further screwing screw fastening parts.
- the engaging parts 18 l are formed integrally with the frame 18 .
- the engaging parts 18 l or parts including the engaging parts 18 l may be composed of separate members made of the same material or different materials.
- the engaging parts 18 l or the parts including the engaging parts 18 l may be mechanically connected to the prescribed positions of the frame 18 by screwing, welding or fitting in forms or stuck and fixed thereto by an adhesive agent or the like.
- the long sides of the connectors 24 b and 24 c are respectively arranged substantially in parallel with the sides of the second circuit board 24 .
- the long side of the connector 24 b is attached in substantially parallel with one side 24 f of the second circuit board 24 facing the pick-up module 19 .
- the cable insert part of the connector 24 b is directed inward of the board.
- the cable insert part of the connector 24 c is directed outward of the board.
- the connector 24 b is connected to the carriage 20 through connecting means (not shown) such as a flat cable or a flexible board.
- the connector 24 c is connected to the first circuit board 23 through connecting means (not shown) such as a flat cable or a flexible board.
- the connector 24 d is connected to the motor 21 for moving the carriage 20 through connecting means (not shown) such as a flat cable or a flexible board.
- the connecting part 24 e is arranged in the back surface (a surface opposite to a surface on which the connectors 24 b , 24 c and 24 d are arranged) of the second circuit board 24 and connected to the spindle motor 19 e through connecting means (not shown) such as a flat cable or a flexible board.
- the circuit of the first circuit board 23 and the circuit of the second circuit board 24 may be formed on one board to form one circuit board. In this case, since the connecting means for connecting the boards is not necessary, a more inexpensive structure may be obtained.
- the circuit board is formed with one or a plurality of boards and they may be accommodated in the diameter of the disk or in the vicinity of the diameter.
- the area of the optical disk device on which the disk is mounted that is viewed from a front surface may be made minimum.
- a solenoid 25 is related to an eject operation of the disk, sandwiched in between the first circuit board 23 and the pick-up module 19 and fixed to the back surface 18 d side of the frame 18 .
- a cover 26 with which the pick-up module 19 and the second circuit board 24 are covered is attached.
- the cover 26 does not need to shield the second circuit board 24 .
- a part of a cover fixing part 26 a for fixing the cover 26 to the frame 18 directly comes into contact with the earth parts of the first circuit board 23 and the second circuit board 24 or comes into contact therewith through a spring to fix and ground the cover 26 by screwing and further fix the circuit board 23 and the second circuit board 24 .
- a plurality of through holes 26 b are provided to avoid the interference with a part of parts forming the pick-up module 19 or reduce the weight. Especially when the weight does not need to be further reduced, the through holes for reducing the weight can be omitted.
- a protruding part 26 c pushed out toward a direction separating from the second circuit board 24 is provided within a range substantially opposed to the second circuit board 24 .
- the connector 24 b on the second circuit board 24 is covered with the protruding part 26 c.
- the first circuit board 23 is connected to the second circuit board 24 by connecting means 27 connected to the connector 23 b on the first circuit board 23 and the connector 24 c on the second circuit board 24 .
- the connecting means 27 is arranged so as to cover at least a part of the cover 26 therewith.
- a flat belt type such as the flat cable or the flat board is desired to thin the optical disk device.
- the connecting means 27 connected to the connector 24 c on the second circuit board 24 is folded back so as to bypass the end part of the cover 26 in the vicinity of the connector 24 b and pulled out to a position for covering the cover 26 .
- linear connecting means When linear connecting means cannot be used due to the positional relation between the connector 23 b on the first circuit board 23 and the connector 24 c on the second circuit board 24 , curved connecting means may be used to meet the positional relation of the connectors.
- the circuit boards can be connected together without preventing the thickness of the optical disk device from decreasing.
- the linear and flat belt type connecting means 27 is provided with a bent part 27 a so that the inexpensive linear connecting means can meet the positional relation between the connector 23 b on the first circuit board 23 and the connector 24 c on the second circuit board 24 .
- the bent part 27 a is provided at least on a vertical bisector B of the long side of the connector 23 b or a vertical bisector C of the long side of the connector 24 c to reduce the torsion or swell on the surface of the flat belt type connecting means.
- the bent part 27 a is bent even number of times so that contact parts at both the ends of the flat belt type connecting means 27 with the connectors come to the same side of the flat surface of the flat belt.
- FIG. 4 shows an example of bending the flat belt type connecting means twice.
- the flat belt type connecting means 27 coming from the connector 23 b on the first circuit board 23 is bent at the bent part 27 a , pulled out once to an opposite side to the connector 24 c relative to the vertical bisector B of the long side of the connector 23 b and folded again on the bent part 27 a and pulled out to the connector 24 side.
- Fixing means 27 b is used for fixing the flat belt type connecting means 27 to the cover 26 .
- the connecting means 27 b a method for fixing the connecting means 27 to the cover 26 by using an adhesive tape or a method in which a flexible member as the fixing means 27 b is connected to the cover with a space provided to pass the connecting means 27 between the connected parts and detachably fix the connecting means to the cover is preferable.
- a double side tape may be sandwiched in between the connecting means 27 and the cover 26 to fix the connecting means to the cover.
- a through hole 18 m is provided in the vicinity of a part opposed to the first circuit board 23 of the frame 18 .
- a press button switch 23 f disposed in the first circuit board 23 passes through the through hole 18 m and protrudes from the front surface 18 b of the frame 18 .
- the movable direction of a press button 23 g of the press button switch 23 f is substantially perpendicular to the surface of the first circuit board 23 .
- the dimension of the through hole 18 m is determined in view of the required degree of decrease of weight as well as the decrease of weight of the frame 18 .
- the press button switch 23 f serves to detect the opening and closing state of an opening and closing cover attached to a portable electronic device side and can supply a detected control signal to the portable electronic device side.
- the press button switch 23 f may be provided on the front surface 18 b of the frame 18 .
- the brake 28 comprises a case 28 a , a movable part 28 b , a part 28 c and a spring 28 d .
- the case 28 a is formed integrally with the frame 18 .
- the case 28 a may be composed of another member made of the same material as that of the frame 18 or a different material from that of the frame and may be attached to a prescribed position of the frame 18 .
- the case 28 a has side walls formed integrally with the frame, protruding on the front surface side of the frame and surrounding at least three sides and a top plate provided integrally with the side walls to cover an upper part with an optical pick-up module side opened.
- a moving axis of the movable part 28 b passes the center of rotation of the spindle motor 19 e to regulate a movable range by the case 28 a .
- the spring 28 d is set so as to push out the movable part 28 b toward the diametrical center of the spindle motor 19 e .
- the part 28 c is provided on a surface of the movable part 28 c facing the diametrical center of the spindle motor 19 e and made of a material high in its friction coefficient relative to a material of the disk such as silicon rubber, felt, etc.
- the surface of the part 28 c that comes into contact with the disk has an inclination of an angle of ⁇ on a surface parallel to the disk relative to the vertical surface of the moving axis 28 e .
- an expected uneven width of the outer form of the disk is 0.3 mm to 0.6 mm.
- An amount of inclination ⁇ of the surface of the part 28 c coming into contact with the disk and width G shown in FIG. 5 are set so as to meet the expected uneven width of the diameter of the disk.
- the movable range of the movable part 28 b and the part 28 c is set to a distance F from the center of the spindle motor 19 e to the center of the surface of the part 28 c , that is, 58.5 mm to 61.5 mm.
- G is set to 4 mm to 10 mm.
- the spring 28 d is set so that a pressing force of a prescribed load (for instance, the weight of about 10 g) is exerted on the disk from the part 28 c when the disk having the diameter of 120 mm is mounted and the part 28 c collides with the disk for braking.
- a pressing force of a prescribed load for instance, the weight of about 10 g
- the dimension H of the surface of the part 28 c in contact with the disk in the direction of thickness of the disk is set to 4 mm to 10 mm.
- the movable part 28 b is provided with an inclined surface 28 f .
- An external pressing rod presses the inclined surface 28 f to obtain the movement of the movable part 28 b in the diametrical direction of the spindle motor 19 e .
- the pressing rod is provided on the disk taking out movable disk cover of the portable electronic device. The movable disk cover is closed so that the pressing rod presses the inclined surface 28 f . Then, the movable part 28 b separates from the disk 28 g to release a brake.
- the outer form of the frame 18 is set to a form that can hold the pick-up module 19 , the first circuit board 23 and the second circuit board 24 , for instance, a form that can surround the outer periphery of the pick-up module 19 , with which the first circuit board 23 and the second circuit board 24 can be covered and to which a holding part can be attached.
- an optical disk device fixing part 29 protrudes from the side part 18 e or the side part 18 f of the frame 18 , or enters the inside of the frame 18 from the side part of the frame 18 or is provided in the surface of the frame 18 .
- the optical disk device fixing part 29 is provided integrally with the frame 18 .
- the optical disk device fixing part 29 or a part including the optical disk device fixing part 29 may be composed of another member made of the same material or a different material.
- the optical disk device fixing part 29 or the part including the optical disk device fixing part 29 may be mechanically connected to the prescribed position of the frame 18 by screwing, welding or fitting in form or may be stuck and attached thereto by an adhesive agent or the like.
- optical disk device fixing parts 29 are preferably provided, and about 4 to 8 fixing parts are especially preferably provided.
- One optical disk device fixing part 29 hardly realizes an attachment with a sufficient strength. More than 10 optical disk device fixing parts need much time to attach them so that a productivity may be possibly deteriorated.
- the form of the optical disk device fixing part 29 comprises, as shown in a part D of FIG. 2 , a land 29 a protruding substantially in parallel with the front surface 18 b of the frame 18 from the side part 18 e or the side part 18 f of the frame 18 and a hole 29 b substantially perpendicular to the surface of the frame 18 for passing a screw. Further, as shown in a part E of FIG.
- the optical disk device fixing part 29 comprises a land 29 c entering the front surface 18 b of the frame 18 substantially in parallel therewith from the side part 18 e or the side part 18 f of the frame 18 and a hole 29 d substantially perpendicular to the surface of the frame 18 for passing a screw.
- the optical disk device fixing part 29 may be formed with a flat plate having a form shown in the part D of FIG. 2 that protrudes substantially vertically to the front surface 18 b of the frame 18 .
- a tapped hole may be provided substantially vertically to the protruding flat plate and the screw may be directed to be parallel to the front surface 18 b of the frame 18 so that the screw is attached to the opposed fixing part of the portable electronic device.
- the form of the optical disk device fixing part 29 may have a connecting part capable of being thermally welded or ultrasonic welded so that the optical disk device can be fixed to the portable electronic device by a thermally welding method or a ultrasonic welding method.
- both the optical disk and the portable electronic device have forms (preferably, fixing parts having flat parts) capable of being fixed by an adhesive agent to partly fix the optical disk device to the portable electronic device by the adhesive agent or fix the optical disk device thereto by using an adhesive material and other connecting means.
- the use of the adhesive agent makes it possible to fix the optical disk device even in a position where a screwing is difficult and the degree of freedom in design is increased.
- FIG. 6 is a diagram showing other method for attaching the optical disk device according to the embodiment of the present invention.
- the optical disk device fixing parts 29 are provided so that the optical disk device is fixed by screwing or welding or fixed by the adhesive agent.
- one or a plurality of engaging hooks 30 are provided.
- engaging parts 31 for the engaging hooks 30 are provided in the inner surface of the portable electronic device 15 .
- FIG. 7 is a diagram showing an example of an arrangement of a drive eject switch in this embodiment.
- the drive eject switch 32 provided in the portable electronic device 15 is operated.
- a movable disk cover 33 provided in a computer main body is opened and control operations such as finishing a performed application, stopping the spindle motor or the like are carried out.
- the drive eject switch is provided in the optical disk device side.
- the drive eject switch is not attached to the optical disk device, but the drive eject switch is attached to a portable electronic device main body as described above. Accordingly, a mechanism for holding the drive eject switch can be omitted from the optical disk device side to make the device compact.
- the whole of the computer can be miniaturized.
- the casing 10 is not necessary. Accordingly, a thinner and lighter portable electronic device than the portable electronic device to which the usual optical disk device is attached can be provided.
- the optical disk device according to this embodiment may be attached not only to the portable electronic device but also to a fixed electronic device.
- the optical disk device as shown in the above-described one example can realize the weight of 135 g or lower (preferably, 120 g or lower, and more preferably, 100 g or lower).
- Such an optical disk device is mounted on an electronic device, so that the electronic device itself can be miniaturized.
- the optical disk device is especially useful for a structure in which a disk with a diameter whose maximum diameter of a disk capable of being mounted ranges from 110 mm to 130 mm can be mounted.
- a lead-free material is used for the members forming the pick-up module or the connecting materials of the members, electronic parts forming the circuit board or the connecting materials of the electronic parts and other members mounted on the frame or the connecting materials of the members.
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Head (AREA)
- Moving Of Heads (AREA)
Abstract
The present invention includes a frame, an optical pick-up module fixed to the frame and a circuit board forming a control circuit fixed to the frame. The frame has fixing parts to other members.
Description
- This is a divisional application of application Ser. No. 10/827,522 filed Apr. 20, 2004, the entire contents of which are incorporated by reference herein.
- 1. Field of the Invention
- The present invention relates to an optical disk device preferably mounted on an electronic device such as a stationary computer. More particularly, the present invention relates to an optical disk device preferably mounted on a mobile electronic device such as a mobile computer (notebook personal computer or the like), a digital camera, an electronic notebook, etc.
- 2. Description of the Related Art
- A usual optical disk device contained in a computer main body ordinarily has a structure that the whole of the device is accommodated in a casing and the casing is attached to a space of the computer main body so that the optical disk device is attached to the computer main body. An attaching part is provided in the casing and attached to the computer main body.
- Now, a method for attaching the usual optical disk device to a portable electronic device will be described below by referring to the drawings.
-
FIG. 8 is a perspective view showing the structure of the usual optical disk device contained in the portable electronic device.Reference numeral 1 designates an optical pick-up. 2 designates a main shaft. 3 designates a sub-shaft. 4 designates a spindle motor. 5 designates a base. 6 designates a pick-up module (PUM). 7 designates a tray. 8 designates a carriage. 9 designates a rail. 10 designates a casing. 11 designates an optical disk device. 12 designates attaching tapped holes of an optical disk device side. 13 designates a circuit board forming a control circuit or the like. 14 designates a frame (seen from the back side of a disk attaching part) -
FIG. 9 is a diagram for showing a method for attaching the usualoptical disk device 11 contained in the portable electronic device to the portable electronic device.Reference numeral 15 designates the portable electronic device. 16 designates an attachment provided for attaching the optical disk device to the portable electronic device. 17 designates attaching holes of an attachment side. - In
FIG. 8 , the optical pick-up 1 moves in the diametrical direction of the spindle motor 4 through themain shaft 2 and thesub-shaft 3 as guides to read or write data on a disk attached to the spindle motor part. Themain shaft 2 and thesub-shaft 3 are attached to the base 5 to form the pick-up module 6 as a whole. The pick-up module 6 is fixed to the tray 7. The tray 7 slides relative to thecasing 10 by the rail 9. The tray 7 is pulled out from thecasing 10 upon attaching and detaching the optical disk and is accommodated in thecasing 10 upon reading and writing data. Thecircuit board 13 forming the control circuit or the like is attached to at least one of the tray or the casing. The above-described structure constitutes theoptical disk device 11 contained in the portable electronic device as a whole. - In
FIG. 9 , on thecasing 10 of theoptical disk device 11, the attaching tappedholes 12 are provided for attaching the device to the computer main body. In the portableelectronic device 15, theattachment 16 is interposed for attaching the device to the portable electronic device. The attachingholes 17 of the attachment side are fixed to the attaching tappedholes 12 of the optical disk device side by screws to mount theattachment 16 on the portableelectronic device 15 so that the optical disk device is mounted on and fixed to the portable electronic device. - In the usual disk device, the
casing 10 has functions, as described above, for positioning the tray 7 on which the pick-up module 6 or the spindle motor 4 or the like is mounted through the rail 9 and for fixing the optical disk to the portableelectronic device 15. An optical disk device whose thickness is reduced basically meets the above-described structure. - As examples of the related art, JP-A-8-171786 and JP-A-7-201044 as described below are exemplified.
- However, since the portable electronic device has needed to be increasingly thinned or light, the optical disk device itself has needed to be thinned or light in the usual structure. Particularly, the optical disk device has extremely needed to be light. However, in the above-described structure, the weight of the optical disk device has been extremely hardly reduced.
- The present invention solves the above-described usual problem and it is an object of the present invention to provide an optical disk device that can realize a thin and especially light device.
- The present invention provides an optical disk device comprising a frame, an optical pick-up module fixed to the frame, and a circuit board forming a control circuit fixed to the frame, characterized in that the frame has fixing parts to other members.
-
FIG. 1 is a perspective view showing an optical disk device according to one embodiment of the present invention from its front surface. -
FIG. 2 is a perspective view showing the optical disk device according to one embodiment of the present invention from its back surface with a cover and connecting means removed. -
FIG. 3 is a diagram showing the structure of the optical system of the optical disk device according to one embodiment of the present invention. -
FIG. 4 is a perspective view showing the optical disk device according to one embodiment of the present invention from its back surface. -
FIG. 5 is a front view of the optical disk device according to one embodiment of the present invention. -
FIG. 6 is a view showing another method for attaching the optical disk device according to one embodiment of the present invention. -
FIG. 7 is a view showing an example of the arrangement of a drive eject switch of the optical disk device according to one embodiment of the present invention. -
FIG. 8 is a perspective view showing the structure of a usual optical disk device contained in a portable electronic device. -
FIG. 9 is a view showing a method for attaching the usual optical disk device contained in the portable electronic device to the portable electronic device. -
FIG. 1 is a perspective view showing an optical disk device according to one embodiment of the present invention from its front surface.FIG. 2 is a perspective view showing the optical disk device according to one embodiment of the present invention from its back surface with a cover and connecting means removed (InFIG. 2 , a cover and a flat cable are omitted). Further,FIG. 3 is a diagram showing the structure of the optical system of the optical disk device according to one embodiment of the present invention.FIG. 4 is a perspective view showing the optical disk device according to one embodiment of the present invention from its back surface.FIG. 5 is a front view of the optical disk device according to one embodiment of the present invention.FIG. 6 is a view showing another method for attaching the optical disk device according to one embodiment of the present invention.FIG. 7 is a view showing an example of the arrangement of a drive eject switch of the optical disk device according to one embodiment of the present invention. - In
FIGS. 1 and 2 ,reference numeral 18 designates a frame for holding respective parts. A material with which theframe 18 is formed is composed of at least one of resin materials such as denatured polyphenylene oxide, an ABS resin, polycarbonate, a mixture of the ABS resin and polycarbonate, polybutylene terephthalate, polyoximethylene, liquid crystal polymer, polyphenylene sulfide, polystyrene, polyacetal, polyamide, etc. or a resin material by adding an inorganic material such as glass or alumina to the resin material or an electric conductive resin material. Particularly, as the material of theframe 18, the denatured polyphenylene oxide or the mixture of the denatured polyphenylene oxide and inorganic fibers or powder is preferable. These materials are used so that rigidity can be improved and a curve prevention can be realized and a weight can be more reduced. - In this embodiment, the
frame 18 is entirely Integrally formed with one kind of resin material, however, other materials may be partly used, or a plurality of members made of different materials may be arranged on a plane and these members may be mechanically connected together or bonded by an adhesive agent to form theframe 18. Further, the members made of the same material may be connected together in the same manner as described above to form theframe 18. - Further, a plurality of members (made of the same material of different materials) may be laminated in the direction of thickness and laminated by a method of adhesion to from the
frame 18. For instance, a metal plate or a ceramic plate high in its rigidity may be sandwiched in between a pair of plate type resin plates to form theframe 18. - When the
frame 18 is formed mainly by a resin, members such as plate pieces or wire shaped metal or ceramic materials capable of improving the rigidity may be dispersed in the resin to reduce the weight of theframe 18 itself and increase the rigidity. - The
frame 18 has the above structure or the combination of the above-described structures to realize the rigidity or the low weight. - The
frame 18 has a throughhole 18 a into which a pick-upmodule 19 is inserted. In theframe 18, anuplift part 18 c rising from afront surface 18 b is provided from aback surface 18 d to thefront surface 18 b. The pick-upmodule 19 is inserted into the throughhole 18 a from theback surface 18 d. Theuplift part 18 c covers the end part of the pick-upmodule 19 and is provided outside the maximum diameter of the diameter of a mounted disk. Thus, a part of the outer periphery of the throughhole 18 a of theframe 18 has a thickness to reinforce the through hole without interfering with the disk upon mounting the disk. Specifically, as shown inFIG. 2 , the thickness L1 of theside part 18 e of theuplift part 18 c is made larger than the thickness L2 of aside part 18 f near theuplift part 18 c so that a mechanical strength can be increased. Theside part 18 e of theuplift part 18 c is provided integrally with atop part 18 g. That is, theuplift part 18 c is composed of at least theside part 18 e and thetop part 18 g. Further, the thickness L1 of theside part 18 e is larger than the thickness L3 of thetop part 18 g. Further, a part not smaller than ½ times as much as theside part 18 e forming theuplift part 18 c is desirably larger than the thickness L2 of theside part 18 f near theside part 18 e to increase the mechanical strength. Theinner end part 18 h of thetop part 18 g has a circular arc form to form a part of the throughhole 18 a. On thetop part 18 g, one or a plurality of throughholes 18 i are provided to reduce the weight. When theframe 18 is formed, if the throughholes 18 i are not provided by considering productivity, a structure becomes simple to manufacture theframe 18 easily. Accordingly, when the productivity is to be improved, the throughholes 18 i are not preferably provided. - Further, on the
front surface 18 b of theframe 18, a disk taking outrecess 18 j is provided for easily inserting fingers between the disk and theframe 18 upon detaching the attached disk. The range of the disk taking outrecess 18 j is set to 22 mm to 55 mm in the diametrical direction D from the center of the axis of aspindle motor 19 e, to 12 mm to 26 mm in the circumference direction and to 1 mm to 2.5 mm in depth. Thus, the small diameter type disk can be easily taken out. - In the
frame 18 formed as described above, while a strength is ensured, the weight can be suppressed to 15 g or lower (preferably, 13 g or lower) to reduce the weight of the optical disk device. - In the pick-up
module 19, aframe 19 a and acover 19 b attached to an upper surface are provided. In thecover 19 b, a throughhole 19 c is provided. Thespindle motor 19 e is attached to theframe 19 a by screws or the like through abottom plate 19 d. A part of thespindle motor 19 e on which the disk is mounted protrudes from the throughhole 19 c of thecover 19 b to thefront surface 18 b side of theframe 19 a. - A
carriage 20 is movably held by two substantiallyparallel shafts frame 19 a. - A
motor 21 is fixed to theframe 19 a to rotate arotating shaft 21 b attached to theframe 19 a so as to freely rotate through a group ofgears 21 a. The rotatingshaft 21 b is provided in the vicinity of theshaft 19 f and attached substantially in parallel with theshaft 19 f. The rotatingshaft 21 b is provided in an opposite side to theshaft 19 g with respect to theshaft 19 f. In therotating shaft 21 b, a spiral groove is provided. Aguide 20 a provided in thecarriage 20 is fitted thereto. When therotating shaft 21 b rotates, theguide 20 a and thecarriage 20 move in two directions (arrows A shown inFIG. 1 ) along theshafts motor 21, the rotatingshaft 21 b and the group ofgears 21 a as means for moving thecarriage 20 are collectively accommodated in an opposite side to theshaft 19 g with respect to theshaft 19 f. - In the
cover 19 b on the pick-upmodule 19, a range substantially opposed to a range in which thecarriage 20 moves rises toward a direction separating from thecarriage 20 relative to a range that is not substantially opposed to the range in which thecarriage 20 moves to form anuplift part 19 h. The height of theuplift part 19 h is set not to interfere with thecarriage 20 in the moving range of thecarriage 20. Thus, a step is formed between theuplift part 19 h of thecover 19 b and a part except it to reinforce thecover 19 b. Accordingly, even when the thickness of thecover 19 b is reduced, the deterioration of strength can be suppressed to a minimum. - The
carriage 20 is provided with aframe 20 b formed by die-casting a metal material. On theframe 20 b, an optical system for reading or writing the disk is mounted. InFIG. 3 , an example of the structure of the optical system mounted on theframe 20 b will be described below. - Laser beam for a DVD emitted from a
semiconductor laser 200 for a DVD that emits the laser beam having wavelength of 677 nm or shorter is reflected by a reflectingmirror 20 c to change its optical path, and then enters acollimator lens 20 d to become parallel lights. The laser beam that becomes the parallel lights passes through aprism 20 e, changes their optical paths in arise prism 20 f, passes a ¼λ plate 20 g, and then converges on anobjective lens 20 h and is applied to a disk 20 i. A reflected beam from the disk 20 i passes through theobjective lens 20 h, the ¼λ plate 20 g, changes its direction in therise prism 20 f and theprism 20 e, converges on thecollimator lens 20 j, is incident on alaminated prism 20 k to change its direction and is incident on asensor 201. - On the other hand, a laser beam for a CD emitted from a
semiconductor laser 20 m for a CD for emitting a laser beam having wavelength of 765 nm to 795 nm passes through thelaminated prism 20 k, enters thecollimator lens 20 j to be parallel lights and the parallel lights are incident on theprism 20 e. The parallel lights change their directions in theprism 20 e and therise prism 20 f, pass the ¼λ plate 20 g, converge on theobjective lens 20 h and are applied to the disk 20 i. A reflected light from the disk 20 i passes through theobjective lens 20 h, the ¼λ plate 20 g, changes its direction in therise prism 20 f and theprism 20 e, converges on thecollimator lens 20 j, is incident on thelaminated prism 20 k to change its direction and is incident on thesensor 201. Further, on a frontlight monitor 300, outgoing lights are partly incident and used to control the adjustment of a quantity of light of a light source. - The
rise prism 20 f, the ¼λ plate 20 g and theobjective lens 20 h are formed on anactuator 22. Theactuator 22 is attached to thecarriage 20 through adamper 22 a. On theactuator 22, anactuator coil 22 b is formed. Theactuator coil 22 b dynamically corrects the movement of the laser beam on the disk to move theactuator 22, theobjective lens 20 h and correct the position of the laser beam. - The
objective lens 20 h faces thefront surface 18 b side of the frame and all movable range is located within the range of the throughhole 19 c. - The
frame 19 a of the pick-upmodule 19 is provided with an attaching part 19 i that is fixed to theframe 18 through avibration isolating damper 19 j. Thevibration isolating damper 19 j is made of an elastic material, and, specifically, butyl rubber or silicon rubber is used. The attaching parts 19 i are provided at least three or more positions and at substantially equal intervals. Especially, at least one of the attaching parts 19 i is provided near thespindle motor 19 e to effectively prevent the vibration of thespindle motor 19 e. - A circuit board is divided into a
first circuit board 23 and asecond circuit board 24. Thefirst circuit board 23 is formed in a polygonal shape. Thesecond circuit board 24 is formed in a polygonal shape having an arcuate cut outpart 24 a. Thefirst circuit board 23 forms a circuit for controlling a signal of the laser beam for mainly reading and writing the disk. Thesecond circuit board 24 forms a circuit for controlling themotor 21 or theactuator 22 for mainly moving thespindle motor 19 e or thecarriage 20. - Further, the
first circuit board 23 and thesecond circuit board 24 are respectively fixed to theback surface 18 d opposite to side of theframe 18 on which the disk is mounted. Thefirst circuit board 23 and thesecond circuit board 24 are respectively provided in the right and left sides with respect to a straight line connecting thespindle motor 19 e and theobjective lens 20 h as a boundary. In such a way, the circuit board for controlling the optical disk device is divided into two and fixed to theframe 18. Thus, the form of the optical disk device, that is, the form of theframe 18 can be configured to an arbitrary form adapted to an electronic device on which the optical disk device is mounted. Further, the mounting characteristics of the optical disk device on the electronic device can be improved. - In this embodiment, the circuit board is divided into two, however, the circuit board may be divided into three.
- The
first circuit board 23 is adjacent to the pick-upmodule 19 in theback surface 18 d side of theframe 18 and attached to theshaft 19 f side with respect to thespindle motor 19 e. In the end side of thefirst circuit board 23, a plurality of cut-outtype engaging parts 23 d are provided and engaged with a plurality of hook shaped engagingparts 18 k provided in the end side of theframe 18. Further, screw fastening parts are screwed and fixed to theframe 18. The engagingparts 18 k are formed integrally with theframe 18. However, the engagingparts 18 k or parts including the engagingparts 18 k may be composed of separate members made of the same material or different materials. Then, the engagingparts 18 k or the parts including the engagingparts 18 k may be mechanically connected to the prescribed positions of theframe 18 by screwing, welding or fitting in forms or stuck and fixed thereto by an adhesive agent or the like. To thefirst circuit board 23, twoconnectors connectors first circuit board 23. The cable insert parts of theconnectors connector 23 b is attached substantially in parallel with oneside 23 c of thefirst circuit board 23 facing the pick-upmodule 19. - The
second circuit board 24 is adjacent to the pick-upmodule 19 in theback surface 18 d side of theframe 18 and attached to theshaft 19 g side with respect to thespindle motor 19 e. Thesecond circuit board 24 is fixed to theframe 18 by engaging with a plurality of hook shaped engaging parts 18 l located in the end side of theframe 18 and further screwing screw fastening parts. The engaging parts 18 l are formed integrally with theframe 18. However, the engaging parts 18 l or parts including the engaging parts 18 l may be composed of separate members made of the same material or different materials. Then, the engaging parts 18 l or the parts including the engaging parts 18 l may be mechanically connected to the prescribed positions of theframe 18 by screwing, welding or fitting in forms or stuck and fixed thereto by an adhesive agent or the like. - To the
second circuit board 24, threeconnectors part 24 e is provided. The long sides of theconnectors second circuit board 24. The long side of theconnector 24 b is attached in substantially parallel with oneside 24 f of thesecond circuit board 24 facing the pick-upmodule 19. The cable insert part of theconnector 24 b is directed inward of the board. The cable insert part of theconnector 24 c is directed outward of the board. Theconnector 24 b is connected to thecarriage 20 through connecting means (not shown) such as a flat cable or a flexible board. Theconnector 24 c is connected to thefirst circuit board 23 through connecting means (not shown) such as a flat cable or a flexible board. Theconnector 24 d is connected to themotor 21 for moving thecarriage 20 through connecting means (not shown) such as a flat cable or a flexible board. The connectingpart 24 e is arranged in the back surface (a surface opposite to a surface on which theconnectors second circuit board 24 and connected to thespindle motor 19 e through connecting means (not shown) such as a flat cable or a flexible board. - The circuit of the
first circuit board 23 and the circuit of thesecond circuit board 24 may be formed on one board to form one circuit board. In this case, since the connecting means for connecting the boards is not necessary, a more inexpensive structure may be obtained. - Further, the circuit board is formed with one or a plurality of boards and they may be accommodated in the diameter of the disk or in the vicinity of the diameter. In this case, the area of the optical disk device on which the disk is mounted that is viewed from a front surface may be made minimum.
- A
solenoid 25 is related to an eject operation of the disk, sandwiched in between thefirst circuit board 23 and the pick-upmodule 19 and fixed to theback surface 18 d side of theframe 18. - To the
back surface 18 d side of theframe 18, acover 26 with which the pick-upmodule 19 and thesecond circuit board 24 are covered is attached. When there is another method for shielding thesecond circuit board 24, thecover 26 does not need to shield thesecond circuit board 24. A part of acover fixing part 26 a for fixing thecover 26 to theframe 18 directly comes into contact with the earth parts of thefirst circuit board 23 and thesecond circuit board 24 or comes into contact therewith through a spring to fix and ground thecover 26 by screwing and further fix thecircuit board 23 and thesecond circuit board 24. - In the
cover 26, a plurality of throughholes 26 b are provided to avoid the interference with a part of parts forming the pick-upmodule 19 or reduce the weight. Especially when the weight does not need to be further reduced, the through holes for reducing the weight can be omitted. In thecover 26, a protrudingpart 26 c pushed out toward a direction separating from thesecond circuit board 24 is provided within a range substantially opposed to thesecond circuit board 24. Theconnector 24 b on thesecond circuit board 24 is covered with the protrudingpart 26 c. - The
first circuit board 23 is connected to thesecond circuit board 24 by connectingmeans 27 connected to theconnector 23 b on thefirst circuit board 23 and theconnector 24 c on thesecond circuit board 24. The connecting means 27 is arranged so as to cover at least a part of thecover 26 therewith. As the connectingmeans 27, a flat belt type such as the flat cable or the flat board is desired to thin the optical disk device. The connecting means 27 connected to theconnector 24 c on thesecond circuit board 24 is folded back so as to bypass the end part of thecover 26 in the vicinity of theconnector 24 b and pulled out to a position for covering thecover 26. When linear connecting means cannot be used due to the positional relation between theconnector 23 b on thefirst circuit board 23 and theconnector 24 c on thesecond circuit board 24, curved connecting means may be used to meet the positional relation of the connectors. Thus, the circuit boards can be connected together without preventing the thickness of the optical disk device from decreasing. Further, the linear and flat belttype connecting means 27 is provided with abent part 27 a so that the inexpensive linear connecting means can meet the positional relation between theconnector 23 b on thefirst circuit board 23 and theconnector 24 c on thesecond circuit board 24. Thebent part 27 a is provided at least on a vertical bisector B of the long side of theconnector 23 b or a vertical bisector C of the long side of theconnector 24 c to reduce the torsion or swell on the surface of the flat belt type connecting means. Thebent part 27 a is bent even number of times so that contact parts at both the ends of the flat belttype connecting means 27 with the connectors come to the same side of the flat surface of the flat belt. Thus, most of connectors for a flat cable whose contact parts with the cable are on its single surfaces can meet the flat belt type connecting means. For instance,FIG. 4 shows an example of bending the flat belt type connecting means twice. The flat belttype connecting means 27 coming from theconnector 23 b on thefirst circuit board 23 is bent at thebent part 27 a, pulled out once to an opposite side to theconnector 24 c relative to the vertical bisector B of the long side of theconnector 23 b and folded again on thebent part 27 a and pulled out to theconnector 24 side. - Fixing means 27 b is used for fixing the flat belt
type connecting means 27 to thecover 26. As the connecting means 27 b, a method for fixing the connecting means 27 to thecover 26 by using an adhesive tape or a method in which a flexible member as the fixing means 27 b is connected to the cover with a space provided to pass the connecting means 27 between the connected parts and detachably fix the connecting means to the cover is preferable. A double side tape may be sandwiched in between the connectingmeans 27 and thecover 26 to fix the connecting means to the cover. - A through
hole 18 m is provided in the vicinity of a part opposed to thefirst circuit board 23 of theframe 18. Apress button switch 23 f disposed in thefirst circuit board 23 passes through the throughhole 18 m and protrudes from thefront surface 18 b of theframe 18. The movable direction of apress button 23 g of thepress button switch 23 f is substantially perpendicular to the surface of thefirst circuit board 23. The dimension of the throughhole 18 m is determined in view of the required degree of decrease of weight as well as the decrease of weight of theframe 18. - The
press button switch 23 f serves to detect the opening and closing state of an opening and closing cover attached to a portable electronic device side and can supply a detected control signal to the portable electronic device side. Thepress button switch 23 f may be provided on thefront surface 18 b of theframe 18. - Further, on the
frame 18, another throughhole 18 n is provided and a part of thesolenoid 25 is exposed when viewed from thefront surface 18 b side of theframe 18. - Further, on the
front surface 18 b of theframe 18, abrake 28 for stopping the rotation of the disk is provided as required. Thebrake 28 comprises acase 28 a, amovable part 28 b, apart 28 c and aspring 28 d. Thecase 28 a is formed integrally with theframe 18. However, thecase 28 a may be composed of another member made of the same material as that of theframe 18 or a different material from that of the frame and may be attached to a prescribed position of theframe 18. Further, thecase 28 a has side walls formed integrally with the frame, protruding on the front surface side of the frame and surrounding at least three sides and a top plate provided integrally with the side walls to cover an upper part with an optical pick-up module side opened. InFIG. 5 , a moving axis of themovable part 28 b passes the center of rotation of thespindle motor 19 e to regulate a movable range by thecase 28 a. Thespring 28 d is set so as to push out themovable part 28 b toward the diametrical center of thespindle motor 19 e. Thepart 28 c is provided on a surface of themovable part 28 c facing the diametrical center of thespindle motor 19 e and made of a material high in its friction coefficient relative to a material of the disk such as silicon rubber, felt, etc. The surface of thepart 28 c that comes into contact with the disk has an inclination of an angle of θ on a surface parallel to the disk relative to the vertical surface of the movingaxis 28 e. Thus, even when there is unevenness in the outer form of the disk, the amount of contraction of thespring 28 d when thepart 28 c comes into contact with the disk is constant, so that the pressing force of thepart 28 c to the disk is constant. Specifically, an expected uneven width of the outer form of the disk is 0.3 mm to 0.6 mm. An amount of inclination θ of the surface of thepart 28 c coming into contact with the disk and width G shown inFIG. 5 are set so as to meet the expected uneven width of the diameter of the disk. The movable range of themovable part 28 b and thepart 28 c is set to a distance F from the center of thespindle motor 19 e to the center of the surface of thepart 28 c, that is, 58.5 mm to 61.5 mm. G is set to 4 mm to 10 mm. Further, thespring 28 d is set so that a pressing force of a prescribed load (for instance, the weight of about 10 g) is exerted on the disk from thepart 28 c when the disk having the diameter of 120 mm is mounted and thepart 28 c collides with the disk for braking. In such a setting, the rotation of the disk having the diameter of 120 mm can be adequately stopped. Further, the dimension H of the surface of thepart 28 c in contact with the disk in the direction of thickness of the disk is set to 4 mm to 10 mm. Thus, upon stopping the disk, the side surface of the disk can assuredly abut on thepart 28 c including a backlash of the disk in the direction of thickness of the disk or a curve of the disk within a prescribed range upon mounting the disk. Themovable part 28 b is provided with aninclined surface 28 f. An external pressing rod presses theinclined surface 28 f to obtain the movement of themovable part 28 b in the diametrical direction of thespindle motor 19 e. Specifically, the pressing rod is provided on the disk taking out movable disk cover of the portable electronic device. The movable disk cover is closed so that the pressing rod presses theinclined surface 28 f. Then, themovable part 28 b separates from thedisk 28 g to release a brake. - The outer form of the
frame 18 is set to a form that can hold the pick-upmodule 19, thefirst circuit board 23 and thesecond circuit board 24, for instance, a form that can surround the outer periphery of the pick-upmodule 19, with which thefirst circuit board 23 and thesecond circuit board 24 can be covered and to which a holding part can be attached. - Further, an optical disk
device fixing part 29 protrudes from theside part 18 e or theside part 18 f of theframe 18, or enters the inside of theframe 18 from the side part of theframe 18 or is provided in the surface of theframe 18. - The optical disk
device fixing part 29 is provided integrally with theframe 18. However, the optical diskdevice fixing part 29 or a part including the optical diskdevice fixing part 29 may be composed of another member made of the same material or a different material. The optical diskdevice fixing part 29 or the part including the optical diskdevice fixing part 29 may be mechanically connected to the prescribed position of theframe 18 by screwing, welding or fitting in form or may be stuck and attached thereto by an adhesive agent or the like. - 2 to 10 optical disk
device fixing parts 29 are preferably provided, and about 4 to 8 fixing parts are especially preferably provided. One optical diskdevice fixing part 29 hardly realizes an attachment with a sufficient strength. More than 10 optical disk device fixing parts need much time to attach them so that a productivity may be possibly deteriorated. - For instance, when screws are stood substantially vertically on the
front surface 18 b of theframe 18 in the outer periphery of theframe 18 to be screwed, the form of the optical diskdevice fixing part 29 comprises, as shown in a part D ofFIG. 2 , aland 29 a protruding substantially in parallel with thefront surface 18 b of theframe 18 from theside part 18 e or theside part 18 f of theframe 18 and ahole 29 b substantially perpendicular to the surface of theframe 18 for passing a screw. Further, as shown in a part E ofFIG. 2 , the optical diskdevice fixing part 29 comprises aland 29 c entering thefront surface 18 b of theframe 18 substantially in parallel therewith from theside part 18 e or theside part 18 f of theframe 18 and ahole 29 d substantially perpendicular to the surface of theframe 18 for passing a screw. Further, the optical diskdevice fixing part 29 may be formed with a flat plate having a form shown in the part D ofFIG. 2 that protrudes substantially vertically to thefront surface 18 b of theframe 18. A tapped hole may be provided substantially vertically to the protruding flat plate and the screw may be directed to be parallel to thefront surface 18 b of theframe 18 so that the screw is attached to the opposed fixing part of the portable electronic device. - Further, the form of the optical disk
device fixing part 29 may have a connecting part capable of being thermally welded or ultrasonic welded so that the optical disk device can be fixed to the portable electronic device by a thermally welding method or a ultrasonic welding method. - Further, as other method for fixing the optical disk device to the portable electronic device, a method may be employed that both the optical disk and the portable electronic device have forms (preferably, fixing parts having flat parts) capable of being fixed by an adhesive agent to partly fix the optical disk device to the portable electronic device by the adhesive agent or fix the optical disk device thereto by using an adhesive material and other connecting means. In this case, the use of the adhesive agent makes it possible to fix the optical disk device even in a position where a screwing is difficult and the degree of freedom in design is increased.
- Further, as other method for fixing the optical disk device to the portable electronic device,
FIG. 6 is a diagram showing other method for attaching the optical disk device according to the embodiment of the present invention. On theframe 18 of the optical disk device, the optical diskdevice fixing parts 29 are provided so that the optical disk device is fixed by screwing or welding or fixed by the adhesive agent. Further, one or a plurality of engaginghooks 30 are provided. In the inner surface of the portableelectronic device 15, engagingparts 31 for the engaginghooks 30 are provided. Thus, after the engaginghooks 30 of theframe 18 of theoptical disk device 11 are engaged with the engagingparts 31 in the inner surface of the portableelectronic device 15, the optical disk device is fixed by the optical diskdevice fixing parts 29. Thus, theoptical disk device 11 is fixed to the inner bottom surface of theportable information terminal 15. In this attaching method, fitting hooks are partly used so that screwed positions can be reduced and an assembly possibility can be improved. - Further,
FIG. 7 is a diagram showing an example of an arrangement of a drive eject switch in this embodiment. In order to take out the disk, the drive eject switch 32 provided in the portableelectronic device 15 is operated. Thus, a movable disk cover 33 provided in a computer main body is opened and control operations such as finishing a performed application, stopping the spindle motor or the like are carried out. In the related art, the drive eject switch is provided in the optical disk device side. However, the drive eject switch is not attached to the optical disk device, but the drive eject switch is attached to a portable electronic device main body as described above. Accordingly, a mechanism for holding the drive eject switch can be omitted from the optical disk device side to make the device compact. The whole of the computer can be miniaturized. - In the optical disk device constructed as described above, since the respective members are attached to the
frame 18 and theframe 18 is directly attached to the portable electronic device by screwing or the like, which is different from the usual structure that the members are respectively attached to thecasing 10 which is attached to the portable electronic device, thecasing 10 is not necessary. Accordingly, a thinner and lighter portable electronic device than the portable electronic device to which the usual optical disk device is attached can be provided. - The optical disk device according to this embodiment may be attached not only to the portable electronic device but also to a fixed electronic device.
- The optical disk device as shown in the above-described one example can realize the weight of 135 g or lower (preferably, 120 g or lower, and more preferably, 100 g or lower). Such an optical disk device is mounted on an electronic device, so that the electronic device itself can be miniaturized.
- The optical disk device according to one embodiment of the present invention is especially useful for a structure in which a disk with a diameter whose maximum diameter of a disk capable of being mounted ranges from 110 mm to 130 mm can be mounted.
- Further, a lead-free material is used for the members forming the pick-up module or the connecting materials of the members, electronic parts forming the circuit board or the connecting materials of the electronic parts and other members mounted on the frame or the connecting materials of the members. Thus, the device gentle for an environment can be provided.
- This application is based upon and claims the benefit of priority of Japanese Patent Application No 2003-115569 filed on Mar. 4, 1921 and Japanese Patent Application No 2003-115570 filed on Mar. 4, 1921 and Japanese Patent Application No 2003-115571 filed on Mar. 4, 1921 and Japanese Patent Application No 2003-115572 filed on Mar. 4, 1921 and Japanese Patent Application No 2003-115573 filed on Mar. 4, 1921 and Japanese Patent Application No 2003-115574 filed on Mar. 4, 1921, the contents of which are incorporated herein by reference in its entirety.
Claims (46)
1. An optical disk device disposed in an electronic device, said optical disk device comprising:
a frame;
fixing parts for directly fixing the frame to the electronic device;
an optical pick-up module fixed to the frame, for reading an optical disk to be mounted on the frame; and
a circuit board including a control circuit, said circuit board being fixed to the frame,
wherein a braking unit is provided on at least one of the frame and the control board, and the braking unit is positioned to be adjacent to the periphery of the optical disk when mounted on the frame.
2. The optical disk device according to claim 1 , wherein the braking unit includes a contact member mounted to be capable of moving, and a surface of the contact member is positioned to be adjacent to the periphery of the optical disk when mounted on the frame.
3. The optical disk device according to claim 2 , wherein the contact member is mounted to move along an axis of movement, and said surface of the contact member is inclined relative to a plane that is perpendicular to said axis.
4. The optical disk device according to claim 3 , wherein said surface of the contact member is further inclined relative to the surface of the optical disk when mounted on the frame.
5. The optical disk device according to claim 3 , wherein said surface of the contact member is oriented so as to be non-parallel with a tangent of the edge of the optical disk at a contact region between the contact member and the optical disk when the optical disk is mounted on the frame.
6. The optical disk device according to claim 4 , wherein said surface of the contact member is oriented so as to be non-parallel with a tangent of the edge of the optical disk at a contact region between the contact member and the optical disk when the optical disk is mounted on the frame.
7. The optical disk device according to claim 2 , wherein the braking unit further includes a resilient member for pushing out the contact member so as to press against the optical disc when mounted on the frame.
8. The optical disk device according to claim 7 , wherein a pressing force of the resilient member against the contact member has a weight of about 10 g.
9. The optical disk device according to claim 3 , wherein the movable range of the contact member is from 58.5 mm to 61.5 mm.
10. The optical disk device according to claim 3 , wherein said surface of the contact member has a length of from 4 mm to 10 mm in a direction parallel with the surface of the optical disk mounted on the frame.
11. The optical disk device according to claim 3 , wherein the surface of the contact member has a length of from 4 mm to 10 mm in a direction perpendicular to the surface of the optical disk mounted on the frame.
12. The optical disk device according to claim 2 , wherein the braking unit further includes a motor that is fixed to the frame and rotates the optical disk mounted on the frame, and the contact member faces a rotational center of the motor.
13. The optical disk device according to claim 2 , wherein the braking unit further includes a casing member housing the braking unit.
14. The optical disk device according to claim 13 , wherein the casing member is formed integrally with the frame.
15. The optical disk device according to claim 13 , wherein the casing member has an opening part opening to the optical pick-up module, and the contact member is mounted so as to move through the opening part.
16. The optical disk device according to claim 1 , wherein the braking unit is caused to move by an external unit.
17. The optical disk device according to claim 16 , wherein the external unit is provided with the electronic device, and the braking unit moves according to a motion of the eternal unit when detaching the optical disk from the electronic device.
18. The optical disk device according to claim 1 further comprising a switch provided on at least one of the circuit board and the frame, said switch for detecting whether or not the disk cover covers said optical disk device.
19. The optical disk device according to claim 1 , wherein the frame is formed so as to have a gap between the frame and the optical disk when mounted on the frame.
20. The optical disk device according to claim 1 further comprising an ejection unit provided on at least one of the circuit board and the frame, said ejection unit for ejecting the optical disk mounted on the frame.
21. The optical disk device according to claim 20 , wherein at least a part of the fixing parts to other members provided in the frame has a form capable of being screwed.
22. The optical disk device according to claim 20 , wherein at least a part of the fixing parts to other members provided in the frame has a form capable of being ultrasonic welded or thermally welded.
23. The optical disk device according to claim 20, wherein at least a part of the fixing parts to other members provided in the frame has a form capable of being fixed by an adhesive agent and at least a part of the fixing parts can be fixed by the adhesive agent or can be fixed by using an adhesive material and other connecting means to the other members.
24. The optical disk device according to claim 20 , wherein at least a part of the fixing parts to other members provided in the frame has a form capable of being engaged between the fixing part and the corresponding fixing part of other members.
25. The optical disk device according to claim 20 , wherein at least a part of the fixing parts to other members provided in the frame is provided integrally with the frame.
26. The optical disk device according to claim 20 , wherein at least a part of the fixing parts to other members provided in the frame comprises another member made of the same material as that of the frame or a different material from that of the frame and attached to a prescribed position of the frame.
27. The optical disk device according to claim 20 , wherein at least a part of the fixing parts to other members provided in the frame has a substantially planar part and the substantially planar part of the fixing part is substantially parallel to the surface of the frame.
28. The optical disk device according to claim 20 , wherein at least a part of the fixing parts to other members provided in the frame has a substantially planar part and the substantially planar part of the fixing part is substantially perpendicular to the surface of the frame.
29. The optical disk device according to claim 20 , wherein at least a part of the fixing parts to other members provided in the frame is provided in the outer peripheral part of the frame.
30. The optical disk device according to claim 20 , wherein the fixing parts to other members provided in the frame, are disposed at two to ten positions.
31. An optical disk device disposed in an electronic device, said optical disk device comprising:
a frame;
fixing parts for directly fixing the frame to the electronic device;
an optical pick-up module fixed to the frame, for reading an optical disk to be mounted on the frame; and
a circuit board including a control circuit, said circuit board being fixed to the frame,
wherein the frame is formed so as to have a gap between the frame and the optical disk when mounted on the frame.
32. An optical disk device disposed in an electronic device, said optical disk device comprising:
a frame;
fixing parts for directly fixing the frame to the electronic device;
an optical pick-up module fixed to the frame, for reading an optical disk to be mounted on the frame; and
a circuit board including a control circuit, said circuit board being fixed to the frame,
wherein the frame has first and second regions, the first region has a surface which is at a first distance from the surface of the optical disk mounted on the frame and the second region has a second distance from the surface of the optical disk mounted on the frame, and said first distance is greater than said second distance.
33. The optical disk device according to claim 31 , wherein said frame includes a recessed area on the surface of the frame on which the optical disk is to be mounted.
34. The optical disk device according to claim 33 , the recessed area has an uneven surface.
35. The optical disk device according to claim 31 further comprising a switch provided on at least one of the circuit board and the frame, said switch for detecting whether or not the disk cover covers said optical disk device.
36. The optical disk device according to claim 31 further comprising an ejection unit provided on at least one of the circuit board and the frame, said ejection unit for ejecting the optical disk mounted on the frame.
37. The optical disk device according to claim 31 , wherein at least a part of the fixing parts to other members provided in the frame has a form capable of being screwed.
38. The optical disk device according to claim 31 , wherein at least a part of the fixing parts to other members provided in the frame has a form capable of being ultrasonic welded or thermally welded.
39. The optical disk device according to claim 31 , wherein at least a part of the fixing parts to other members provided in the frame has a form capable of being fixed by an adhesive agent and at least a part of the fixing parts can be fixed by the adhesive agent or can be fixed by using an adhesive material and other connecting means to the other members.
40. The optical disk device according to claim 31 , wherein at least a part of the fixing parts to other members provided in the frame has a form capable of being engaged between the fixing part and the corresponding fixing part of other members.
41. The optical disk device according to claim 31 , wherein at least a part of the fixing parts to other members provided in the frame is provided integrally with the frame.
42. The optical disk device according to claim 31 , wherein at least a part of the fixing parts to other members provided in the frame is composed of another member made of the same material as that of the frame or a different material from that of the frame and attached to a prescribed position of the frame.
43. The optical disk device according to claim 31 , wherein at least a part of the fixing parts to other members provided in the frame has a substantially planar part and the substantially planar part of the fixing part is substantially parallel to the surface of the frame.
44. The optical disk device according to claim 31 , wherein at least a part of the fixing parts to other members provided in the frame has a substantially planar part and the substantially planar part of the fixing part is substantially perpendicular to the surface of the frame.
45. The optical disk device according to claim 31 , wherein at least a part of the fixing parts to other members provided in the frame is provided in the outer peripheral part of the frame.
46. The optical disk device according to claim 31 , wherein the fixing parts to other members provided in the frame, are disposed at two to ten positions.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/844,985 US20080037408A1 (en) | 2003-04-21 | 2007-08-24 | Optical disk device |
Applications Claiming Priority (14)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-115573 | 2003-04-21 | ||
JP2003115571A JP2004326834A (en) | 2003-04-21 | 2003-04-21 | Optical disk unit |
JP2003115574A JP4228764B2 (en) | 2003-04-21 | 2003-04-21 | Electronic device provided with optical disk device |
JP2003-115569 | 2003-04-21 | ||
JP2003-115574 | 2003-04-21 | ||
JP2003-115571 | 2003-04-21 | ||
JP2003115569A JP4114530B2 (en) | 2003-04-21 | 2003-04-21 | Optical disk device |
JP2003-115572 | 2003-04-21 | ||
JP2003115570A JP4114531B2 (en) | 2003-04-21 | 2003-04-21 | Optical disk device |
JP2003115573A JP2004326836A (en) | 2003-04-21 | 2003-04-21 | Optical disk unit |
JP2003-115570 | 2003-04-21 | ||
JP2003115572A JP2004326835A (en) | 2003-04-21 | 2003-04-21 | Optical disk device |
US10/827,522 US7334238B2 (en) | 2003-04-21 | 2004-04-20 | Optical disc device having fixing parts for directly fixing a frame of the optical disk device to an electronic device |
US11/844,985 US20080037408A1 (en) | 2003-04-21 | 2007-08-24 | Optical disk device |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/827,522 Division US7334238B2 (en) | 2003-04-21 | 2004-04-20 | Optical disc device having fixing parts for directly fixing a frame of the optical disk device to an electronic device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080037408A1 true US20080037408A1 (en) | 2008-02-14 |
Family
ID=33425785
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/827,522 Expired - Fee Related US7334238B2 (en) | 2003-04-21 | 2004-04-20 | Optical disc device having fixing parts for directly fixing a frame of the optical disk device to an electronic device |
US11/844,985 Abandoned US20080037408A1 (en) | 2003-04-21 | 2007-08-24 | Optical disk device |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/827,522 Expired - Fee Related US7334238B2 (en) | 2003-04-21 | 2004-04-20 | Optical disc device having fixing parts for directly fixing a frame of the optical disk device to an electronic device |
Country Status (4)
Country | Link |
---|---|
US (2) | US7334238B2 (en) |
KR (1) | KR20040091571A (en) |
CN (1) | CN1551155A (en) |
TW (1) | TW200506917A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW200425066A (en) * | 2003-05-07 | 2004-11-16 | Liteon It Corp | Disk braking mechanism |
JP2006302378A (en) * | 2005-04-19 | 2006-11-02 | Funai Electric Co Ltd | Electronic apparatus and pickup device |
JP4322941B2 (en) * | 2007-10-26 | 2009-09-02 | 株式会社東芝 | Electronics |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5497366A (en) * | 1993-12-29 | 1996-03-05 | Sony Corporation | Optical-pick up device using multi-lens holder |
US5555623A (en) * | 1991-04-21 | 1996-09-17 | Sony Corporation | Method formaking and producing object lens holder |
US5684775A (en) * | 1994-12-19 | 1997-11-04 | Teac Corporation | Disk apparatus in which protection against discharging of static electricity is taken |
US5862116A (en) * | 1994-02-23 | 1999-01-19 | Teac Corporation | Disc device |
US5936927A (en) * | 1994-04-25 | 1999-08-10 | Sony Corporation | Disk drive apparatus with insulators to minimize external vibrations |
US6141309A (en) * | 1995-07-10 | 2000-10-31 | Fujitsu Limited | Optical memory apparatus having a supporting base with an integral, fixed optical part mounting portion |
US6151284A (en) * | 1995-07-26 | 2000-11-21 | Teac Corporation | Disk device having a flexible printed circuit cable providing a small-height structure |
US20020122371A1 (en) * | 2001-03-05 | 2002-09-05 | Pioneer Corporation | Recording medium reproducing unit and recording medium reproducing unit element |
US6731580B1 (en) * | 1999-10-29 | 2004-05-04 | Teac Corporation | Disk unit with dual release mechanism for releasing cover retaining member |
US6738334B1 (en) * | 1995-07-10 | 2004-05-18 | Fujitsu Limited | Optical memory apparatus having a base with a unitary and integral optical component mounting portion and a precision mounting surface for mounting an optical component |
US20040205785A1 (en) * | 2001-04-10 | 2004-10-14 | Shoji Takahashi | Disc drive |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06231574A (en) | 1993-02-01 | 1994-08-19 | Matsushita Electric Ind Co Ltd | Mo disk device |
JP3003481B2 (en) | 1993-11-05 | 2000-01-31 | ティアック株式会社 | Electronic device and disk device incorporated therein |
DE4403951C2 (en) * | 1994-02-08 | 1999-03-25 | Niles Simmons Industrieanlagen | Measuring method and measuring device for wheel sets of rail vehicles |
JPH08171786A (en) | 1994-12-16 | 1996-07-02 | Toshiba Corp | Information processor |
JPH08287665A (en) | 1995-04-10 | 1996-11-01 | Matsushita Electric Ind Co Ltd | Vibration-proof device for optical memory device |
-
2004
- 2004-04-20 US US10/827,522 patent/US7334238B2/en not_active Expired - Fee Related
- 2004-04-20 KR KR1020040027171A patent/KR20040091571A/en not_active Application Discontinuation
- 2004-04-21 TW TW093111092A patent/TW200506917A/en unknown
- 2004-04-21 CN CNA200410036840XA patent/CN1551155A/en active Pending
-
2007
- 2007-08-24 US US11/844,985 patent/US20080037408A1/en not_active Abandoned
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5555623A (en) * | 1991-04-21 | 1996-09-17 | Sony Corporation | Method formaking and producing object lens holder |
US5497366A (en) * | 1993-12-29 | 1996-03-05 | Sony Corporation | Optical-pick up device using multi-lens holder |
US6014357A (en) * | 1994-02-23 | 2000-01-11 | Teac Corporation | Disc device having a turntable being able to extend into an opening in a top plate beneath a lid connected to the plate |
US5862116A (en) * | 1994-02-23 | 1999-01-19 | Teac Corporation | Disc device |
US5878012A (en) * | 1994-02-23 | 1999-03-02 | Teac Corporation | Disc device having a movable tray sized to permit the disc to over hang the tray |
US6111837A (en) * | 1994-02-23 | 2000-08-29 | Teac Corporation | Disc device with a turntable being able to extend into an opening in a top plate connected to a lid |
US6151285A (en) * | 1994-02-23 | 2000-11-21 | Teac Corporation | Disc device having a chassis and movable tray part including a turntable and pickup means with a disc overhanging the tray perpendicular to the disc insertion direction |
US5936927A (en) * | 1994-04-25 | 1999-08-10 | Sony Corporation | Disk drive apparatus with insulators to minimize external vibrations |
US5684775A (en) * | 1994-12-19 | 1997-11-04 | Teac Corporation | Disk apparatus in which protection against discharging of static electricity is taken |
US6141309A (en) * | 1995-07-10 | 2000-10-31 | Fujitsu Limited | Optical memory apparatus having a supporting base with an integral, fixed optical part mounting portion |
US6738334B1 (en) * | 1995-07-10 | 2004-05-18 | Fujitsu Limited | Optical memory apparatus having a base with a unitary and integral optical component mounting portion and a precision mounting surface for mounting an optical component |
US6151284A (en) * | 1995-07-26 | 2000-11-21 | Teac Corporation | Disk device having a flexible printed circuit cable providing a small-height structure |
US6731580B1 (en) * | 1999-10-29 | 2004-05-04 | Teac Corporation | Disk unit with dual release mechanism for releasing cover retaining member |
US20020122371A1 (en) * | 2001-03-05 | 2002-09-05 | Pioneer Corporation | Recording medium reproducing unit and recording medium reproducing unit element |
US20040205785A1 (en) * | 2001-04-10 | 2004-10-14 | Shoji Takahashi | Disc drive |
Also Published As
Publication number | Publication date |
---|---|
CN1551155A (en) | 2004-12-01 |
KR20040091571A (en) | 2004-10-28 |
US7334238B2 (en) | 2008-02-19 |
TW200506917A (en) | 2005-02-16 |
US20040223447A1 (en) | 2004-11-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100260767B1 (en) | Optical memory apparatus | |
US6577577B2 (en) | Downsized disk unit with reduced noise | |
US20080037408A1 (en) | Optical disk device | |
US7958520B2 (en) | Disk drive device | |
US7185346B2 (en) | Low-profile disk unit | |
JP2007323692A (en) | Optical disk driver | |
US7627876B2 (en) | Optical disk apparatus having a plurality of elastic bodies | |
JP4100252B2 (en) | Optical disk device | |
JP4285076B2 (en) | Optical disk device | |
JP4228764B2 (en) | Electronic device provided with optical disk device | |
JP4114531B2 (en) | Optical disk device | |
JP4114530B2 (en) | Optical disk device | |
JP4467538B2 (en) | Optical pickup device | |
JP3714103B2 (en) | Disk unit | |
KR101520500B1 (en) | computer memory storage | |
JP3664165B2 (en) | Optical storage | |
JP3664164B2 (en) | Optical storage | |
JP2004326835A (en) | Optical disk device | |
KR100269905B1 (en) | Optical memory apparatus | |
JP2004326836A (en) | Optical disk unit | |
JP4103687B2 (en) | Optical pickup device | |
US20090262625A1 (en) | Optical disk device | |
JP2004326834A (en) | Optical disk unit | |
JP4185844B2 (en) | Optical disk device | |
JP4058277B2 (en) | Optical disk device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |