WO2004068486A1 - 磁気ヘッド装置 - Google Patents
磁気ヘッド装置 Download PDFInfo
- Publication number
- WO2004068486A1 WO2004068486A1 PCT/JP2003/013145 JP0313145W WO2004068486A1 WO 2004068486 A1 WO2004068486 A1 WO 2004068486A1 JP 0313145 W JP0313145 W JP 0313145W WO 2004068486 A1 WO2004068486 A1 WO 2004068486A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic head
- recording medium
- information recording
- cartridge
- cartridge holder
- Prior art date
Links
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- 238000013459 approach Methods 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 230000003028 elevating effect Effects 0.000 description 15
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- 229920005989 resin Polymers 0.000 description 12
- 229910001220 stainless steel Inorganic materials 0.000 description 10
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- 229920000106 Liquid crystal polymer Polymers 0.000 description 2
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
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- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
- G11B11/10567—Mechanically moving the transducers
- G11B11/10571—Sled type positioners
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
- G11B11/10558—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position in view of the loading or unloading of the carrier
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/1058—Flying heads
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/4806—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
- G11B5/4826—Mounting, aligning or attachment of the transducer head relative to the arm assembly, e.g. slider holding members, gimbals, adhesive
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/4806—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
- G11B5/4833—Structure of the arm assembly, e.g. load beams, flexures, parts of the arm adapted for controlling vertical force on the head
Definitions
- the present invention relates to a magnetic head device, and more particularly, to a magnetic head device capable of reducing the thickness of an information recording / reproducing device.
- a magneto-optical recording / reproducing apparatus is an optical head that emits a light beam irradiated on a magneto-optical recording layer of an information recording medium on one surface side of a magneto-optical disk, which is an information recording medium that is rotated by a disk rotation drive mechanism.
- a magnetic head for applying an external magnetic field to the magneto-optical recording layer is provided on the other surface side of the magneto-optical disk in opposition to the optical head.
- the magneto-optical recording / reproducing apparatus applies a magnetic field whose direction is modulated in accordance with an information signal to be recorded from a magnetic head to a magneto-optical recording layer of a rotating magneto-optical disk, and an optical head.
- the light beam emitted from the device is collected and irradiated.
- This light beam irradiation causes the portion of the magneto-optical recording layer, which has been heated above the Curie temperature to lose its coercive force, to be magnetized in accordance with the direction of the magnetic field applied from the magnetic head, and then the magneto-optical disk rotates. Due to the relative movement of the light beam, the temperature falls below the temperature of the crystal, and the information signal is recorded by fixing the direction of the magnetization.
- the head body is attached to the free end of a cantilevered support member that can swing in the direction of the surface deflection of the magneto-optical disk.
- This head body The magnetic head is composed of a slider mounted with a magnetic field applying part and floating in contact with the magneto-optical disk or floating at a small distance from the magneto-optical disk. The first position, which is close to and in a recording state by contact sliding or floating, etc., and the free end of the support material and the head body are separated from the magneto-optical disk by the magnetic head lifting / lowering device of the magnetic head device.
- the second position which is separated and is in a reproducing state
- the third position in which the magnetic head and the magneto-optical disk are inclined while maintaining a state substantially parallel to each other, to enable the mounting and dismounting of the magneto-optical disk.
- a conventional magnetic head device is described in, for example, Japanese Patent Application Laid-Open No. 2000-8501116.
- FIG. 14 is a plan view of an example of a conventional magnetic head device.
- an XYZ three-dimensional rectangular coordinate system is set in which the X axis is the radial direction of the magneto-optical disk 1, the Y axis is the tangential direction, and the Z axis is the normal direction.
- FIG. 15 is a side cross-sectional view of the magnetic head device shown in FIG. 14 at the first position (recording position) as viewed from the direction of the X-X line arrow.
- FIG. 16 is a side cross-sectional view of the magnetic head device shown in FIG.
- FIG. 17 is a cross-sectional side view of the magnetic head device shown in Fig. 14 at the third position (position where the magneto-optical disk can be attached / detached), as viewed from the direction of the arrow X-X. is there.
- FIG. 18 is a side sectional view of the head body of the magnetic head shown in FIG.
- FIG. 19 is a perspective view of an example of a general cartridge.
- the conventional magnetic head device comprises a head main body 5, a thin support member 6 for pressing a sliding portion 17 of the head body against the surface of the magneto-optical disk 1, and a fixing member 7 to which one end of the support member 6 is attached. .
- Other end of cantilevered support material 6 (free end ) The head main body 5 is attached by a method such as adhesion or fusion.
- the head body 5 is a magnetic head element formed by attaching a wound coil 14 to the center magnetic pole of an E-shaped magnetic core 13 made of a soft magnetic material such as ferrite.
- a sliding member (slider) made of resin with good slidability, for example, polyphenylene sulfide, liquid crystal polymer, etc. 6 is provided.
- the magnetic head element 15 is integrally attached to the sliding body 16 by adhesive fixing or resin integral molding.
- the supporting member 6 is formed of a thin plate such as SUS304, BeCu, or the like. One end of the supporting member 6 is fixed to the fixing member 7, and the supporting member 6 follows the surface deflection of the magneto-optical disk 1, and At a first position where recording is performed on the magnetic disk 1, a first spring system 10 which is a first elastic portion for applying a load to the head body 5 in the direction of the magneto-optical disk 1. A throttle rib which is inclined from the first spring system 10 at a predetermined angle so as not to interfere with the cartridge 2, extends from the first panel system 10, and is formed by a throttle on both sides in the width direction. 11 a relay unit 9 which is a rigid body by having 1 and a second panel system 8 which is extended from the relay unit 9 and is a second elastic unit for following the surface shape of the magneto-optical disk 1 It consists of.
- One end of the flexible printed board 3 is adhered to the head body 5, and the other end is adhered to the support member 6 near the fixing member 7.
- One end of the flexible print substrate 3 is soldered to both ends of the lead wire of the coil 14, and the other end is connected to a drive circuit of a magnetic head (not shown).
- the fixing member 7 is made of a metal plate such as iron or stainless steel.
- the fixing member 7 to which one end of the supporting member 6 is fixed is not shown as a magnetic head 4 It is rotatably attached to a fastening member 19 for fastening the optical head via a shaft 18, and is urged toward the magneto-optical disk 1 by a spring 12. Then, the fixing member 7 comes into contact with the receiving portion 20 of the fastening member 19, whereby the fixing member 7 and the magnetic head 4 fixed to the fixing member 7 are positioned in the Z-axis direction.
- a hair portion 23 on the head body 5 side extends along the Y-axis direction.
- the arm 23 has a first magnetic head holder 22 at the tip thereof, and a second magnetic head holder 21 at a position on the fixing member 7 side.
- the first magnetic head holder 22 is formed along the X-axis direction so as to be located above the head body 5 (more specifically, the second panel system 8).
- the second magnetic head holder 21 is formed along the X-axis direction so as to be located above the first spring system 10.
- the magneto-optical disk 1 is housed in a force cartridge 2 shown in FIG.
- the force cartridge 2 is made of a resin body 24 made of a resin such as ABS or polycarbonate, and a metal such as iron or stainless steel.
- An opening (not shown) provided in the cartridge body 24 is provided.
- a shutter 25 attached to the power cartridge body 24 so that the shutter can be opened and closed.
- the lift mechanism 26 is disposed between the cartridge holder 23 for holding the force cartridge 2 for storing the magneto-optical disk 1 and the magnetic head 4, and is provided with a vertically rotating shaft 2 provided on the cartridge holder 23. It is rotatably mounted around 7.
- a slide member 28 is attached to the cartridge holder 23.
- the slide member 28 is attached to the cartridge holder 23 by a lifting drive unit 29 composed of motors, gears, etc., as shown in FIG. Slide in the direction of arrow a or arrow b (Y-axis direction in Figs. 14 to 19) It is possible.
- a part of the slide member 28 is formed with an inclined surface 28a along the Y-axis direction whose height in the Z-axis direction has changed.
- a biasing force is applied to the lift mechanism 26 by an elastic member such as a panel (not shown) so that the lower surface thereof presses the inclined surface 28 a of the slide member 28.
- a cam mechanism is formed at a portion where the inclined surface 28a of the slide member 28 and the lift mechanism 26 abut.
- the lift mechanism 26 and the slide member 28 are made of, for example, a thin metal plate such as stainless steel or iron or a resin.
- a lift section 30 having a curved shape is provided at a position of the lift mechanism 26 that comes into contact with the magnetic head 4 when the magnetic head 4 is moved to the second position.
- the first position (recording position) of the magnetic head 4 that is, when the sliding portion 17 is in contact with the magneto-optical disk 1 as shown in FIG.
- the first panel system 10 that applies a load in the direction of contact, and the second panel system 8 that is displaced in accordance with the surface runout and changes in the surface shape of the magneto-optical disk 1 make the sliding part 17 magneto-optical.
- the runout of the disc 1 and changes in the surface shape and always slides in contact.
- the elevating part 30 of the lift mechanism 26 is retracted to the magneto-optical disk 1 side so as not to contact the magnetic head 4.
- the movement of the magnetic head 4 from the first position (recording position) to the second position (reproducing position, see FIG. 16) is performed as follows.
- the slide member 28 slides in the direction of arrow a shown in FIG. 14 by the lifting drive unit 29.
- the inclined surface 28 a constituting the cam mechanism comes into contact with the lower surface of the lift mechanism 26, lifts the lift mechanism 26, rotates the lift mechanism 26 about the elevating rotation shaft 27, and moves the elevating section 3. 0 moves in the direction away from the magneto-optical disk 1.
- the elevating unit 30 comes into contact with the lower surface of the relay unit 9 of the magnetic head 4 (the surface on the magneto-optical disk 1 side), and moves the support member 6 in a direction away from the magneto-optical disk 1.
- the first panel system 10 moves to the second magnetism. Abut on the pad holder 2 1. With this contact as a boundary, the center of rotation when the head body 5 separates from the magneto-optical disk 1 is moved from the end (P 1) of the fixing member 7 side of the first panel system 10 to the second position.
- the panel system 1 moves to the contact portion (P 2) of the second magnetic head retainer 21 of the panel system 10.
- the elevating section 30 moves in a direction away from the magneto-optical disk 1, the head body 5 further moves away from the magneto-optical disk 1, and the head body 5 (or the second spring system 8) Head contact 22 contacts.
- the head main body 5 moves up to the position having the gap H2 with respect to the cartridge 2, that is, the second position. At this time, since the head body 5 does not protrude above the arm portion 23, the thickness of the magnetic head device has been reduced.
- the movement of the magnetic head 4 from the second position (reproducing position) to the third position is performed as follows.
- the cartridge holder 31 is tilted about the rotation center C1 while the magnetic head 4 is lifted to the second position by the lift mechanism 26, the cartridge is attached to the force cartridge holder 31.
- the lifting part 30 of the lift mechanism 26 comes into contact with the lower surface of the arm part 23 (the surface on the magneto-optical disk 1 side).
- the elevating part 30 overcomes the urging force of the spring 12 and the magnetic head 4, the arm part 23, and the fixing member 7 in which these are integrated with the shaft 18.
- the fastening member 19 with the center as the center.
- the elevating unit 30 moves the magnetic head 4, the arm unit 23, and the fixing member 7 having these integrated with the magneto-optical disk 1. Hold substantially parallel.
- the cartridge 2 can be attached to and detached from the cartridge holder 31 without the head body 5 colliding with the cartridge 2.
- the receiving portion 20 is prevented from interfering with the cartridge 2 and / or the cartridge holder 31 by the shaft 18 to prevent the receiving portion 20 from interfering with the cartridge.
- the distance to 20 needs to be shortened.
- the fixing member 7 is pressed against the receiving portion 20 by receiving the urging force of the panel 12, the position of the free end of the cantilevered arm portion 23 in the Z-axis direction is reduced. The error increases.
- the head main body 5 When the magnetic head 4 is at the second position, the head main body 5 must be separated from the cartridge 2 by a gap H2 in a state where the head body 5 is in contact with the first magnetic head retainer 22 of the arm portion 23. No. If there is a large error in the position of the free end of the arm 23 in the Z-axis direction, the receiving part 20 and the shaft 18 are attached to the cartridge holder 3 so that the gap H2 can be secured even if this error is added. It needs to be separated from 1. As a result, the height HI increases, and there is a problem that the thickness of the magnetic head device and the magneto-optical recording / reproducing device cannot be reduced.
- the arm 23 is not affected even if the error is added.
- the free end of 23 is placed between the free end and the outer housing. It is necessary to secure a gap. As a result, there is a problem that the thickness of the magneto-optical recording / reproducing apparatus cannot be reduced.
- a shaft 18 and a panel 12 are required to rotatably support the fixing member 7 and urge the fixing member 7 toward the magneto-optical disk 1, which increases the number of parts and the number of assembling steps.
- a shaft 18 and a panel 12 are required to rotatably support the fixing member 7 and urge the fixing member 7 toward the magneto-optical disk 1, which increases the number of parts and the number of assembling steps.
- the price of the magneto-optical recording / reproducing apparatus cannot be reduced. Disclosure of the invention
- An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a magnetic head device capable of reducing the thickness and cost of a magneto-optical recording / reproducing device.
- the magnetic head device of the present invention comprises: (a) a cartridge holder for holding a cartridge containing an information recording medium; and (b) a cantilevered support having one end as a fixed end and the other end as a free end.
- a support member having an end attached to a fastening member that moves in a direction substantially parallel to the surface of the information recording medium, and a support member having a supportive material between the fixed end and the free end;
- a magnetic head holding member that is cantilevered by the fastening member so as to extend toward the information recording medium and faces the information recording medium with the support member interposed therebetween, and has a resilient panel portion that is elastically deformable near the fastening member.
- the magnetic head holding member includes a posture holding portion protruding toward the information recording medium, closer to the fastening member than the head body in the longitudinal direction of the magnetic head.
- the posture holding portion when the magnetic head is at the first position, the posture holding portion contacts the cartridge holder. Further, in the second magnetic head device of the present invention, a hole is formed in a region of the cartridge holder in which the posture holding unit moves by movement of the fastening member. Then, when the cartridge is held in the cartridge holder and the magnetic head is at the first position, the posture holding portion passes through the hole and comes into contact with the cartridge.
- FIG. 1 is a plan view of a magnetic head device according to Embodiment 1 of the present invention.
- FIG. 2 is a side cross-sectional view of the magnetic head device according to Embodiment 1 of the present invention, when the magnetic head is at the first position, as viewed from the direction of the arrows along line XX in FIG. .
- FIG. 3 is a side cross-sectional view of the magnetic head device according to Embodiment 1 of the present invention, when the magnetic head is at the second position, as viewed from the direction indicated by the arrow XX in FIG. .
- FIG. 4 is a side cross-sectional view of the magnetic head device according to Embodiment 1 of the present invention, when the magnetic head is at the third position, as viewed from the direction indicated by the arrow XX in FIG. .
- FIG. 5 is a plan view of a main part of a magnetic head device according to Embodiment 2 of the present invention.
- FIG. 6 is a side cross-sectional view of a main part of the magnetic head device according to the second embodiment of the present invention, when the magnetic head is at the first position, as viewed from the direction of arrows along line XX in FIG. It is.
- FIG. 7 is a plan view of a main part of a magnetic head device according to Embodiment 3 of the present invention.
- FIG. 8 shows a magnetic head device according to Embodiment 3 of the present invention.
- FIG. 8 is a side cross-sectional view of a main part when the air head is at a first position, as viewed from the direction of arrows along line X—X in FIG.
- FIG. 9 is a plan view of relevant parts of a magnetic head device according to Embodiment 4 of the present invention.
- FIG. 10 is a side cross-sectional view of a main part of the magnetic head device according to the fourth embodiment of the present invention, when the magnetic head is at the first position, as viewed from the direction indicated by the arrow X—X in FIG. It is.
- FIG. 11 is a plan view of a main part of a magnetic head device according to Embodiment 5 of the present invention.
- FIG. 12 is a side view of a main part of the magnetic head device according to the fifth embodiment of the present invention, when the magnetic head is at the first position, viewed from the direction of the arrow X—X in FIG. 11. It is sectional drawing.
- FIG. 13 is a perspective view of a cartridge preferably used in the magnetic head device according to the fifth embodiment of the present invention.
- FIG. 14 is a plan view of an example of a conventional magnetic head device.
- FIG. 15 is a side cross-sectional view of the conventional magnetic head device when the magnetic head is at the first position (recording position), as viewed from the direction of the arrow X—X of FIG. 14.
- FIG. 16 is a cross-sectional side view of the conventional magnetic head device when the magnetic head is at the second position (reproducing position), as viewed from the direction indicated by the arrow XX in FIG. 14.
- Fig. 17 shows the conventional magnetic head device, when the magnetic head is in the third position (a position where the magneto-optical disk can be attached / detached) as viewed from the direction of the arrow X-X in Fig. 14 It is a side sectional view.
- FIG. 18 is a side sectional view of a head body of a magnetic head of a conventional magnetic head device.
- FIG. 19 is a perspective view of an example of a general force cartridge. BEST MODE FOR CARRYING OUT THE INVENTION
- the gap between the magnetic head and the fastening member to which the magnetic head holding member is attached and the force cartridge are reduced. Therefore, the thickness of the magneto-optical recording / reproducing apparatus can be reduced. Also, since the magnetic head holding member cantilevered by the fastening member has a flexible panel portion, the number of parts and the number of assembly steps can be reduced, and the magneto-optical recording / reproducing apparatus can be made more inexpensive.
- the posture holding unit is formed integrally with the magnetic head holding member. Therefore, the strength between the attitude holding unit and the magnetic head holding member can be increased, and the number of components can be reduced.
- the support material elastic portion bends, and in a direction orthogonal to the surface of the information recording medium. It is preferable that a concave portion or a hole is formed in a region of the force cartridge holder, which is opposed to a portion of the bent elastic member of the support member that comes closest to the information recording medium.
- the permissible range of component errors such as variation in the amount of bending of the support material is increased, and the yield in production is further improved. Therefore, the price of the magnetic head device can be reduced.
- the posture holding section is separated from the cartridge holder at the second position. As a result, wear of the posture holding portion or the cartridge holder is reduced, and the reliability of the device is improved.
- the magnetic head is provided.
- the support member elastic portion bends, and in the direction orthogonal to the surface of the information recording medium, comes closest to the information recording medium among the bent support member elastic portions.
- the hole extends in a region of the cartridge holder facing the portion.
- the cartridge has a receiving portion on one surface, the cartridge is held by the cartridge holder, and the magnetic head is in the first position.
- the posture holding portion passes through the hole and abuts on the receiving portion.
- the posture holding section is separated from the cartridge at the second position. As a result, wear of the posture holding section or the cartridge is reduced, and the reliability of the device is improved.
- FIG. 1 is a plan view of a magnetic head device according to Embodiment 1 of the present invention.
- the radial direction of the magneto-optical disk 1 is the X axis
- the tangential direction is the Y axis.
- the axis direction is defined as the height direction
- the side farther from the magneto-optical disk 1 is defined as the upper side
- the side closer to the magneto-optical disk 1 is defined as the lower side.
- the terms “height”, “up”, and “down” here have nothing to do with the orientation of the magnetic head device in actual use.
- FIG. 1 is a plan view of a magnetic head device according to Embodiment 1 of the present invention.
- the radial direction of the magneto-optical disk 1 is the X axis
- the tangential direction is the Y axis.
- FIG. 2 is a side cross-sectional view of the magnetic head device of FIG. 1 at a first position (recording position) as viewed from the direction of the arrow X—X-ray
- FIG. 3 is a sectional view of the magnetic head device of FIG.
- FIG. 4 is a side cross-sectional view of the magnetic head device of FIG. 1 at the third position (removable of the magneto-optical disk) when viewed from the direction of the arrow X—X-ray at the position 2 (reproduction position).
- FIG. 4 is a side cross-sectional view taken along a line X-X in FIG.
- reference numeral 6 denotes a support member, which is made of a thin spring material such as SUS304 or BeCu.
- the support member 6 exemplified in the present embodiment has one end fixed to the fastening member 40, follows the surface runout of the magneto-optical disk 1, and attaches the magneto-optical disk to the head body 5 at the first position.
- the first spring system 10 which is the first elastic deformation portion (supporting material elastic portion) for applying a load in the direction 1 does not interfere with the cartridge 2 with the first spring system 10.
- the relay section 9 is inclined from the first spring system 10 at a predetermined angle, and has a rigid body formed by bending both edges in the width direction at substantially right angles. It has a second spring system 8 which is a second elastically deformable portion that extends from the relay portion 9 at an angle and follows the surface deflection and surface shape of the magneto-optical disk 1.
- the fastening member 40 is made of a metal plate such as iron or stainless steel.
- the fastening member 40 fastens the magnetic head 4 and the optical head (not shown) which are arranged to face each other with the magneto-optical disk 1 interposed therebetween.
- Fastening member 40 Magnetic head 4 At the end on the side, a magnetic head fixing portion 50 extending toward the head main body 5 substantially parallel to the magneto-optical disk 1 is provided.
- One end of each of the support member 6 and the magnetic head holding member 41 is fixed to the magnetic head fixing portion 50 with a fixing screw 42 and is cantilevered.
- the fastening member 40 is moved in the X-axis direction by a driving device (not shown) to move the head main body 5 and the optical head (not shown) in a direction orthogonal to the tangent to the information track of the magneto-optical disc 1.
- the head body 5 is formed by attaching a wound coil 14 to a center magnetic pole of an E-shaped magnetic core 13 made of a soft magnetic material such as ferrite.
- the sliding element made of a resin with good slidability, such as polyphenylene sulfide or liquid crystal polymer, is used.
- the sliding element made of a resin with good slidability, such as polyphenylene sulfide or liquid crystal polymer, is used.
- It is formed by being integrally attached to 16.
- Reference numeral 17 denotes a sliding portion, which is integrally formed on the surface of the sliding member 16 facing the magneto-optical disk 1.
- the sliding portion 17 has an arc-shaped cross section in a direction perpendicular to the magneto-optical disk 1, so that the sliding portion 17 always makes point contact with the magneto-optical disk 1 and smoothly slides.
- Reference numeral 3 denotes a flexible printed circuit board provided with wiring for transmitting a modulation signal to the head body 5, and is attached to the support member 6 with, for example, a double-sided tape (not shown).
- One end of the flexible printed circuit board 3 is soldered to both ends of the lead wire of the coil 14, and the other end is connected to a drive circuit of a magnetic head (not shown).
- the head body 5 is fixed to the swinging end (free end) side of the support member 6 of the cantilever support structure by fusion or adhesion, or is integrally formed by resin integral molding.
- the end (fixed end) of the support member 6 on the fastening member 40 side is fixed to the magnetic head holding member 41 by laser spot welding or electric spot welding, and then is fixed to the fastening member 40 by a fixing screw.
- the magnetic head holding member 41 is made of stainless steel, phosphor bronze or the like having a thickness of about 0.05 mm to 0.2 mm.
- the magnetic head holding member 41 includes a fixed portion 43, an elastic panel portion 44, and a rigid portion 45 in this order.
- the periphery of the fixed portion 43 is formed by being bent at a substantially right angle, and the magnetic head holding member 41 is fixed to the fastening member 40 by the fixed portion 43.
- the rigidity of the rigid body 45 arranged on the free end side of the magnetic head holding member 41 is increased by drawing.
- the rigid portion 45 has a substantially “A” shape, and a second magnetic head retainer 46 bridged in the X-axis direction is provided near the elastic spring portion 44 of the rigid portion 45. Have been.
- the second magnetic head retainer 46 is disposed above the first spring system 10 of the support 6.
- a first magnetic head retainer 47 cross-linked in the X-axis direction is provided near the tip (free end) of the rigid body portion 45.
- the first magnetic head retainer 47 is located above the second spring system 8 of the support 5, and when the magnetic head 4 assumes the second position, the second spring Abuts the system 8 to regulate the position of the head body 5 in the Z-axis direction.
- Numeral 48 denotes a posture holding part protruding toward the magneto-optical disk 1 in a direction substantially perpendicular to the surface of the magneto-optical disk 1, and is formed of a metal such as iron or stainless steel. It is fixed by welding or electric spot welding. Alternatively, the posture holding section 48 may be formed on the magnetic head holding member 41 by fusion bonding or resin integral molding using resin. The rigid part 45 is urged in the direction of the magneto-optical disk 1 by the elastic force of the elastic spring part 44.
- the posture holding portion 488 was formed by sheet metal processing of stainless steel, iron, or the like having a thickness of about 0.3 mm to 1.0 mm. It contacts the cartridge holder 49 and supports the elastic force of the elastic panel portion 44. At this time, the magnetic head The holding member 41 is positioned in the Z direction while having a space in the Z axis direction with the magnetic head 4.
- Reference numeral 26 denotes a lift mechanism, which is made of, for example, stainless steel, iron, resin, or the like, and is rotatable in the YZ plane around a vertical rotation shaft 27 provided in a cartridge holder 49 for holding the cartridge 2. Installed.
- the lifting force 26 is closer to the head body 5 than the elevating rotary shaft 27 in the Y-axis direction, and between the magnetic head 4 and the cartridge 2 in the Z-axis direction. It has an elevating part 30 extending along.
- Reference numeral 28 denotes a slide member, which is made of, for example, stainless steel, iron, resin, or the like, and is attached to the cartridge holder 49 so as to be slidable in the Y-axis direction. 9 slides.
- a part of the slide member 28 is formed with an inclined surface 28a along the Y-axis direction whose height in the Z-axis direction has changed.
- a biasing force is applied to the lift mechanism 26 by an elastic member (not shown) such as a panel so that the lower surface thereof presses the inclined surface 28 a of the slide member 28.
- a cam mechanism is formed at a portion where the inclined surface 28a of the slide member 28 abuts on the lift mechanism 26.
- the elevating part 30 of the lift mechanism 26 does not contact the support member 6, and a gap is formed between the magnetic head 4 and the lifting mechanism 30.
- the head body 5 is inserted into the opening 49 a provided in the cartridge holder 49 and the opening 2 a of the cartridge 2 and is in contact with the magneto-optical disk 1.
- the movement of the magnetic head 4 from the first position (recording position) to the second position (reproducing position, see FIG. 3) is performed as follows.
- the slide member 28 moves in the direction of the arrow a in FIG. 1, and the inclined surface 28 a raises the lifting force 26. .
- the lift mechanism 26 rotates in a direction in which the elevating unit 30 is separated from the magneto-optical disk 1.
- the elevating unit 30 approaches and comes into contact with the support member 6, lifts the support member 6, and presses the first spring system 10 against the second magnetic head retainer 46.
- the second magnetic head retainer 46 is urged toward the magneto-optical disk 1 by the elastic force of the elastic panel portion 44, and the elastic force of the elastic panel portion 44 is the elastic force of the first spring system 10.
- the first panel system 10 Since the force is larger than the force, the first panel system 10 is elastically deformed (in the present embodiment, the first spring system 10 is bent).
- the center of rotation when the head body 5 separates from the magneto-optical disk 1 from the contact between the first panel system 10 and the second magnetic head retainer 46 is the first From the fastening member 40 side end (P 1) of the panel system 10, it moves to the contact portion (P 2) of the first spring system 10 with the second magnetic head retainer 46.
- the lift mechanism 26 rotates, and the elevating unit 30 moves in a direction away from the magneto-optical disk 1, and the head body 5 (or near the tip of the second spring system 8) moves to the first magnetic head. It comes into contact with presser 4 7. Further, the elevating part 30 rises and abuts on the rigid part 45. Separate from 9. Thus, it reaches the second position (reproduction position) shown in FIG.
- the movement of the magnetic head 4 from the second position (reproduction position) to the third position is performed as follows.
- the cartridge holder 31 With the magnetic head 4 being lifted to the second position by the lift mechanism 26, the cartridge holder 31 is tilted about the rotation center C1.
- the lift force 26 attached to the cartridge holder 31 also rotates together with the cartridge holder 31, and the elevating part 30 of the lift mechanism 26 attaches the support member 6 and the magnetic head holding member 41. Push up.
- the first spring system 10 of the support member 6 and the elastic panel portion 44 of the magnetic head holding member 41 are elastically deformed, and the magnetic head 4 and the magnetic head holding member are deformed.
- the magnetic head fixing screw 42 When the magnetic head 4 is in the first position (see FIG. 2), the portion that protrudes (or is farthest) from the upper surface of the cartridge 2 is the fixing screw 42, and the thickness of the magnetic head 4 is It is defined by the height H1 from the upper surface of the cartridge 2 to the upper surface of the fixing screw 42. Since the position of the magnetic head holding member 41 in the Z-axis direction and its positional accuracy are determined by the length of the posture holding portion 48 in the Z-axis direction and its dimensional accuracy, the magnetic head fixing portion 50 of the fastening member 40 is provided. Can be made shorter in the Y-axis direction than before.
- the magnetic head fixing portion 50 even if the magnetic head fixing portion 50 is brought close to the cartridge 2 (that is, the height H1 is reduced), the fixing portion 50 interferes with the cartridge 2 at the third position (see FIG. 4). Disappears. Therefore, by reducing the height HI and shortening the length of the attitude holding section 48 in the Z-axis direction, the magneto-optical recording and reproducing apparatus can be made thinner.
- the magnetic head holding member 41 having the elastic panel portion 44 provided on the body is directly fixed to the fastening member 40, so that the magnetic head holding member 41 shown in FIGS.
- the shaft 18 and the panel 12 for supporting the fixing member 7 rotatably with respect to the fastening member 19 and for urging the fixing member 7 toward the magneto-optical disk 1 are provided in this embodiment. This is unnecessary, and the number of parts and assembly man-hours can be reduced.
- the posture holding portion 48 is separated from the cartridge holder 49, so that the magnetic head 4 is repeatedly moved in the X-axis direction.
- the wear amount of the cartridge holder 49 is reduced, and the reliability of the device is improved.
- FIG. 5 is a plan view of a main part of the magnetic head device according to the second embodiment of the present invention
- FIG. 6 is a side view of the main part of the magnetic head device of FIG. It is sectional drawing.
- the attitude holding portion 51 is formed integrally with the magnetic head holding member 52 by sheet metal working.
- the posture holding section 51 cuts, for example, a part of a portion of the magnetic head holding member 52 located above the cartridge holder 49 into a substantially “U” shape using a technique such as sheet metal processing. It is bent and formed so as to protrude toward the cartridge holder 49 side. Further, when the magnetic head 4 is at the first position, the magnetic head 4 is bent so that the cross-sectional shape of the portion in contact with the cartridge holder 49 becomes a curved surface.
- the attitude holding portion 51 is formed integrally with the magnetic head holding member 52, the attitude holding portion 48 and the magnetic head Head holding member 41 is separately manufactured, and thereafter, the strength between the posture holding portion 51 and the magnetic head holding member 52 is improved as compared with Embodiment 1 in which the two are integrated. The number of parts can be reduced.
- FIG. 7 is a plan view of a main part of the magnetic head device according to the third embodiment of the present invention
- FIG. 8 is a side view of the main part of the magnetic head device of FIG. It is sectional drawing.
- the portion of the bent first panel system 10 closest to the magneto-optical disk 1 A concave portion 54 is formed by depressing the region of the cartridge holder 53 opposed to the concave portion 54.
- the recess 54 can be formed, for example, by forging.
- a concave portion 54 is formed in a region of the cartridge holder 53 that is opposed in the Z-axis direction to a portion closest to the cartridge holder 53 due to bending. Since the magnetic head 4 moves in the radial direction (X-axis direction) of the magneto-optical disk 1, the formation range of the concave portion 54 in the X-axis direction is closest to the cartridge holder 53 of the first panel system 10. This corresponds to the range of movement of the part and the posture holding unit 51 in the X-axis direction.
- a recess 54 extends to a position where the posture holding portion 51 abuts on the force cartridge holder 53, and when the magnetic head 4 is at the first position, the posture is maintained.
- the holding portion 51 is in contact with the cartridge holder 53 in the concave portion 54.
- the magnetic head device of the third embodiment when the magnetic head 4 is at the first position, the magneto-optical disk 1 of the first panel system 10 Since the concave portion 54 is formed in the region of the cartridge holder 53 opposed to the portion closest to the cartridge, the clearance between the support member 6 (particularly, the first panel system 10) and the cartridge holder 53 is increased. Therefore, when the magnetic head 4 is at the first position, the amount of deflection of the first panel system 10 is determined from the viewpoint of avoiding collision between the first panel system 10 and the force cartridge holder 53. It is possible to expand the allowable error range for the variation. Therefore, the yield in the production of the support material 6 is improved.
- the posture holding portion 51 abuts on the cartridge holder 53 within the concave portion 54, so that the magneto-optical recording and reproducing apparatus can be made thinner.
- the position of the portion of the first panel system 10 which is closest to the magneto-optical disk 1 and the position of the posture holding unit 51 are aligned in the Y-axis direction. Even in the case of coincidence or close proximity, the clearance between the first spring system 10 and the cartridge holder 53 can be secured. Accordingly, when the magnetic head 4 is at the first position, the allowable range of the bending deformation shape of the first spring system 10 is expanded, and the degree of freedom in designing the support member 6 is increased.
- posture holding portion 51 may be in contact with the cartridge holder 53 outside the region of the concave portion 54.
- FIGS. 9 is a plan view of a main part of a magnetic head device according to a fourth embodiment of the present invention.
- FIG. 10 is a main part of the magnetic head device of FIG. It is a side sectional view.
- the magnetic head 1 when the magnetic head 4 is at the first position, the magnetic head 1 is most in contact with the magneto-optical disk 1 of the first panel system 10 that is bent.
- a hole (through hole) 56 is formed in the area of the cartridge holder 55 facing the close part.
- the first panel system 10 of the support member 6 bends so that the cartridge holder 55 side becomes convex and approaches the cartridge holder 55.
- a hole 56 is formed in the region of the force cartridge holder 55 facing the portion closest to the force cartridge holder 55 in the Z-axis direction due to the bending.
- the formation range in the X-axis direction of the hole 56 corresponds to the movement range in the X-axis direction of the portion of the first spring system 10 which is closest to the force holder 55.
- the magnetic head device of the fourth embodiment when the magnetic head 4 is at the first position, the magnetic head 4 is closest to the magneto-optical disk 1 of the first spring system 10. Since the hole 56 is formed in the region of the cartridge holder 55 facing the portion, the clearance between the support member 6 (particularly, the first spring system 10) and the cartridge holder 55 is increased. Therefore, when the magnetic head 4 is at the first position, the amount of deflection of the first panel system 10 is determined from the viewpoint of avoiding collision between the first spring system 10 and the force cartridge holder 55. It is possible to expand the allowable error range for the variation. Therefore, the yield in the production of the support members 6 is improved.
- FIG. 11 shows a magnetic field according to the fifth embodiment of the present invention.
- FIG. 12 is a plan view of the main part of the head device
- FIG. 12 is a side sectional view of the main part of the magnetic head device of FIG. 11 as viewed from the direction of the arrow X-X
- FIG. FIG. 18 is a perspective view of a cartridge that can be preferably used for the magnetic head device according to the fifth embodiment of the present invention.
- the formation range of the hole 58 in the X-axis direction corresponds to the portion of the first panel system 10 that is closest to the cartridge holder 57 and the movement range of the posture holding unit 51 in the X-axis direction.
- the posture holding portion 51 passes through the hole 58 and comes into contact with the receiving portion 59 provided on the force cartridge 60.
- the receiving portion 59 is formed so as to be exposed below the hole 58 when the cartridge 60 is mounted on the cartridge holder 57.
- the receiving portion 59 is made of a material having excellent wear resistance and slidability, such as iron or stainless steel, and can be formed integrally with the force cartridge body 61 made of resin.
- the clearance between the support member 6 (particularly, the first panel system 10) and the cartridge holder 57 is provided. Expands. Therefore, when the magnetic head 4 is in the first position, the deflection of the first panel system 10 is determined from the viewpoint of avoiding collision between the first spring system 10 and the force storage holder 57. The allowable error range for the variation in the amount can be expanded. Therefore, in the production of support material 6, Yield is improved.
- the position of the portion of the first panel system 10 that comes closest to the magneto-optical disk 1 and the position of the attitude holding unit 51 coincide in the Y-axis direction.
- the same effect as in the above-described fourth embodiment can be secured by forming the hole 58. Therefore, when the magnetic head 4 is at the first position, the allowable range of the bending deformation shape of the first panel system 10 is expanded, and the degree of freedom in designing the support member 6 is increased.
- the posture holding section 51 abuts on the receiving section 59 of the force cartridge 60 instead of the force cartridge holder 57, so that the magneto-optical recording / reproducing apparatus can be operated. It can be made thinner.
- the cartridge 60 provided with the receiving portion 59 is used.
- the posture holding portion 5 is formed by using the force cartridge 2 shown in FIG. 1 may directly contact the cartridge 2.
- the hole 58 formed in the force cartridge holder 57 may be provided independently of the opening into which the head body 5 is inserted, or may be provided as one continuous opening of both. You may be.
- the field of use of the magnetic head device of the present invention is not particularly limited, and can be widely used for information recording / reproducing devices equipped with a magnetic head. Above all, thin, small and light It is preferable to use it as a portable device that needs to be a quantity. Further, the present invention is not limited to the magneto-optical recording method, and can be used for an information recording / reproducing apparatus of a magnetic recording method.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03751489A EP1589533A4 (en) | 2003-01-30 | 2003-10-14 | MAGNETIC HEAD DEVICE |
JP2004567565A JPWO2004068486A1 (ja) | 2003-01-30 | 2003-10-14 | 磁気ヘッド装置 |
US10/508,073 US20050174894A1 (en) | 2003-01-30 | 2003-10-14 | Magnetic head device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003/21840 | 2003-01-30 | ||
JP2003021840 | 2003-01-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004068486A1 true WO2004068486A1 (ja) | 2004-08-12 |
Family
ID=32820668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/013145 WO2004068486A1 (ja) | 2003-01-30 | 2003-10-14 | 磁気ヘッド装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050174894A1 (ja) |
EP (1) | EP1589533A4 (ja) |
JP (1) | JPWO2004068486A1 (ja) |
CN (1) | CN1692420A (ja) |
WO (1) | WO2004068486A1 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0696490A (ja) * | 1992-09-10 | 1994-04-08 | Sony Corp | 情報信号記録再生装置 |
JPH0745025A (ja) * | 1993-07-30 | 1995-02-14 | Sony Corp | 光ディスクドライブ装置 |
JPH0732713U (ja) * | 1993-11-01 | 1995-06-16 | アイワ株式会社 | ディスクドライブ装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2804193B2 (ja) * | 1992-01-24 | 1998-09-24 | シャープ株式会社 | ディスク記録再生装置 |
JP2508955B2 (ja) * | 1992-04-20 | 1996-06-19 | ソニー株式会社 | 光磁気記録用摺動型磁気ヘッド |
JPH0765496A (ja) * | 1993-08-26 | 1995-03-10 | Sony Corp | 記録媒体装着装置、及び、記録及び/又は再生装置 |
JPH0793835A (ja) * | 1993-09-21 | 1995-04-07 | Sony Corp | ヘッド支持装置 |
US6411596B1 (en) * | 1999-03-16 | 2002-06-25 | Canon Kabushiki Kaisha | Magneto-optical disk cartridge and magneto-optical disk apparatus |
-
2003
- 2003-10-14 WO PCT/JP2003/013145 patent/WO2004068486A1/ja not_active Application Discontinuation
- 2003-10-14 CN CN200380100572.7A patent/CN1692420A/zh active Pending
- 2003-10-14 US US10/508,073 patent/US20050174894A1/en not_active Abandoned
- 2003-10-14 EP EP03751489A patent/EP1589533A4/en not_active Withdrawn
- 2003-10-14 JP JP2004567565A patent/JPWO2004068486A1/ja not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0696490A (ja) * | 1992-09-10 | 1994-04-08 | Sony Corp | 情報信号記録再生装置 |
JPH0745025A (ja) * | 1993-07-30 | 1995-02-14 | Sony Corp | 光ディスクドライブ装置 |
JPH0732713U (ja) * | 1993-11-01 | 1995-06-16 | アイワ株式会社 | ディスクドライブ装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1589533A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1589533A4 (en) | 2008-04-30 |
US20050174894A1 (en) | 2005-08-11 |
JPWO2004068486A1 (ja) | 2006-05-25 |
CN1692420A (zh) | 2005-11-02 |
EP1589533A1 (en) | 2005-10-26 |
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