WO2006115127A1 - ヘッド移送機構の動力伝達部材および同ヘッド移送機構を備えたディスク装置 - Google Patents
ヘッド移送機構の動力伝達部材および同ヘッド移送機構を備えたディスク装置 Download PDFInfo
- Publication number
- WO2006115127A1 WO2006115127A1 PCT/JP2006/308145 JP2006308145W WO2006115127A1 WO 2006115127 A1 WO2006115127 A1 WO 2006115127A1 JP 2006308145 W JP2006308145 W JP 2006308145W WO 2006115127 A1 WO2006115127 A1 WO 2006115127A1
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- Prior art keywords
- head
- power transmission
- force
- transfer
- transmission member
- Prior art date
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/0857—Arrangements for mechanically moving the whole head
- G11B7/08582—Sled-type positioners
Definitions
- the present invention relates to a power transmission member of a head transfer mechanism in a disk device. Another embodiment of the present invention relates to a disk device including the head transfer mechanism.
- Optical disk devices such as CD (compact 'discs'), DVDs (digital versatile discs), or BDs (Blu-ray discs) that record or play back disc-shaped recording media, MO (Magneto-optical disk) or magneto-optical disk devices such as MD (mini'disk), and recording / reproducing magnetic disk devices such as FD (floppy (registered trademark) 'disk), and the disk media used for these.
- the level is the highest in a head that directly acts on recording or reproduction on a disk.
- the optical head is made up of many optical components that require high precision. Although it is configured, excessive external force such as impact force In order to maintain the accuracy even after being applied, increasing the component strength or improving the bonding strength of each component is one method that often leads to an increase in the cost of component parts or the number of bonding steps. Therefore, a method for avoiding such an impact force being applied to the optical head is effective.
- an optical head in an optical disk apparatus is guided and transported in the radial direction of the disk.
- the optical head is forced to the radially inner or outer peripheral side.
- the optical head is subjected to a large impact force by colliding with the base member or a part integrally held by the base member at the stop position at the operating range limit. This may cause damage to the components inside the optical head! Or cause damage that directly affects performance degradation, such as poor positioning accuracy between components.
- 33 indicates a spindle motor that rotates the disk 31.
- the spindle motor 33 includes a turntable on which the disk 31 is placed and fixed.
- 34 is an optical head that emits a light beam
- 35A and 35B are guide shafts that guide the optical head 34 in the radial direction of the disk placed on the turntable
- 37A, 37B, 37C, and 37D are guide shafts 35A and 35B.
- a lead screw that rotates by force, 41 is a transmission member unit that engages with the lead screw 38 and transmits a propulsive force that moves the optical head 34 in the radial direction of the disk, and 32 is a chassis that integrally supports each of the above members.
- Point to each. 32AZ32B is an inner peripheral stopper Z outer periphery stopper that restricts movement of the optical head 34 at the innermost disk position Z outermost position, and the optical head 34 is at the innermost position Z outermost position.
- Contact stopper 32B is an inner peripheral stopper Z outer periphery stopper that restricts movement of the optical head 34 at the innermost disk position Z outermost position, and the optical head 34 is at the innermost position Z outermost position.
- FIG. 17 shows the lead shown in FIG. 18 in which the transmission member unit 41 of FIG. 16 is fixed to the optical head 34.
- FIG. 5 is a diagram showing details of a portion that engages with a screw 38;
- 43 is a tooth portion that engages with a spiral groove provided on the shaft peripheral surface of the lead screw 38, and is held by the elastic holding member 42.
- 44 indicates a compression panel for urging the tooth portion 43 to the lead screw 38
- 46 indicates a tooth portion thrust restricting member for restricting the position of the tooth portion 43 with respect to the axial direction of the lead screw 38.
- the tooth thrust restricting member 46 is arranged with a certain gap from the tooth 43 !.
- the optical head 34 is moved in the radial direction of the disk 31 by driving the transfer motor 39, and recording is performed at a specific radial position of the disk 31! / ⁇ performs playback.
- FIG. 18 is a diagram showing a detailed configuration of the engaging portion between the tooth portion 43 and the lead screw 38 as viewed from the direction of the arrow PJ2 in FIG.
- the tooth portion 43 receives a force in the direction of arrow D11 and a moment in the direction of D13.
- the optical head 34 receives the force of the tooth portion 43 via the elastic holding member 42 and the mounting base portion 45 and receives the force in the direction D12. In this way, the optical head 34 obtains a driving force in the radial direction of the disk.
- the tooth surface of the tooth part 43 receives a force in a direction away from the lead screw 38, and the urging force by the compression panel 44 suppresses this.
- an excessive driving force is generated in the lead screw 38 due to, for example, the transfer motor 39 becoming uncontrollable and an excessive driving force is generated in the direction of the arrow D11, the moment in the direction of the arrow D13 The engagement between the tooth 43 and the lead screw 38 becomes irregular.
- the optical head 34 When the optical head 34 receives an excessive external force such as an impact force in the transfer direction, the tooth 43 is controlled in the transfer direction by the tooth thrust restricting member 46, but the lead screw 38 The groove force also deviates and the engagement cannot be maintained. Therefore, the optical head 34 moves in an unregulated state to the limit of the movable range in this direction, and the optical head 34 moves to the innermost circumferential position Z. Collides with the inner stopper 32AZ outer stopper 32B at the outer peripheral position. At this time, there is a problem if the joint portion of the optical head 34 is damaged.
- 12 indicates a turntable on which a disk (not shown) is placed and fixed.
- the turntable 12 is driven to rotate by a spindle motor 11.
- the illustration of the chucking member for fixing the disk is omitted.
- 16 is an optical head that emits a light beam to perform recording or reproduction on the disk
- 13 and 14 are guide shafts that guide the optical head 16 in the radial direction of the disk placed on the turntable 12
- 22A, 22B, 22C and 22D are bearings for supporting the guide shafts 13 and 14
- 17 is a transfer motor serving as a drive source for transferring the optical head 16 in the radial direction of the disk mounted on the turntable 12, and 15 is on the shaft peripheral surface.
- Reference numeral 10 denotes a chassis that integrally supports the above members.
- the head 16 is moved in the radial direction of the disk by driving the transfer motor 17, and recording or reproduction is performed at a specific radial position of the disk.
- FIG. 20 is a view showing a state where the power transmission member 18 and the lead screw 15 are engaged.
- the force transmission member 18 includes an engagement portion 20 provided with a tooth portion 20A that fits into the spiral groove 15A of the lead screw 15, and a restriction portion 21 that prevents the tooth portion 20A from deviating from the spiral groove 15A. It is configured.
- Patent Document 1 Japanese Patent Laid-Open No. 10-74370
- Patent Document 2 JP 2000-339882 A
- the optical head 16 cannot be stopped by being transferred in the direction of the impact force Fl 1, but it is also moved to the limit of the movable range, and finally is configured integrally with the base member 10 itself or the base member 10. It is inevitable to collide with any part.
- the collision force generated at the time of collision directly propagates to the optical head 16, the performance of the optical head 16 may deteriorate due to damage to the components inside the optical head 16 or poor position accuracy between the components. There was the problem that damage that would have a direct impact would occur.
- the present invention solves the conventional problems as described above, and the collision occurs when the optical head receives an impact force in the transfer direction and collides with a part of the base member or a part of the member fixed to the base member.
- An object of the present invention is to provide a power transmission member of a head transfer mechanism and a disk device having the head transfer mechanism that can reduce damage to components by attenuating the force without propagating directly to the optical head. .
- a power transmission member of the present invention is a power transmission member of a mechanism for transferring a head for recording or reproducing data on a disk relative to a base member in a disk device, and comprising a fixed portion And a power transmission part, a connection part, and a contact part.
- the fixed part is attached to the head.
- the power transmission unit receives driving from a motor serving as a driving source.
- the connecting portion connects the fixed portion and the power transmission portion.
- the abutting portion is fixed to the power transmission portion, and abuts against a contacted portion which is a part of the base member or a part of the member fixed to the base member at at least one end of the transfer range of the head.
- the contact portion is further inertially connected to the fixed portion, and the relative position of the head in the transfer direction with respect to the fixed portion is variable.
- the disk device of the present invention includes a disk rotation mechanism that rotates a disk that can perform recording or reproduction, a head that performs recording or reproduction on the disk, and a head that is a disk.
- the head transfer mechanism includes a power transmission mechanism that includes a power transmission member and transmits power to the head, and a motor that is a drive source of the power transmission mechanism.
- the power transmission member is fixed to the head, a fixed part for mounting to the head, a power transmission part for receiving drive from the power transmission mechanism, a connecting part for connecting the fixed part and the power transmission part, and the power transmission part. And a contact portion that contacts a part of the base member or a part of the member fixed to the base member at at least one end of the transfer range.
- the abutting portion is elastically connected to the fixed portion via the connecting portion, and the relative position of the head in the transfer direction with respect to the fixed portion is variable.
- the power transmission member and the disk device of the present invention have the following advantageous effects.
- the head receives an impact force in the radial direction of the disk and is forcibly transferred, and collides with a part of the base member at at least one end of the transfer range of the head.
- the kinetic energy due to the transfer is attenuated by the elastic deformation of the connecting portion between the fixed portion and the abutting portion, thereby preventing the collision force from propagating directly to the head itself.
- damage to the components constituting the head and the joints between the components is avoided.
- the abutment portion is variable in at least the relative position in the head transfer direction with respect to the fixed portion, the abutment portion is a base member or the like in the head transfer range. Even if a repulsive force is applied to a part of the vehicle, the repulsive force is attenuated and transmitted to the power transmission unit. As a result, the repulsive force received by the power transmission unit is reduced, and it is possible to prevent the transmission configuration in the power transmission unit from being hindered.
- the power transmission mechanism has a lead screw provided with a spiral continuous groove on the outer periphery of the cylindrical shaft.
- the power transmission portion has a nut portion at least partially provided with a helical rib that can be engaged with the continuous groove.
- the nut portion is formed integrally with the abutting portion, and at least the relative position of the head in the transfer direction is variable with respect to the head. This simplifies the power transmission mechanism and improves transmission efficiency.
- FIG. 1 is a structural perspective view showing the overall structure of a head transfer mechanism in a disk device according to an embodiment of the present invention.
- FIG. 2 is a perspective view showing details of a portion for driving a power transmission member by a lead screw in the disk device according to the embodiment of the present invention.
- FIG. 3 is a cross-sectional view showing a state of engagement between the lead screw and the nut portion in the disk device according to the embodiment of the present invention.
- FIG. 4 is a state diagram showing the relationship of engagement between the lead screw and the nut portion in the disk device according to the embodiment of the present invention.
- FIG. 5 is a diagram showing a detailed configuration of a power transmission member in the disk device according to the embodiment of the present invention.
- FIG. 6 is a diagram showing a detailed configuration of a power transmission member in the disk device according to the embodiment of the present invention.
- FIG. 7 is a diagram showing a detailed configuration of a power transmission member in the disk device according to the embodiment of the present invention.
- FIG. 8 is a diagram showing a detailed configuration of a power transmission member in the disk device according to the embodiment of the present invention.
- FIG. 9 A diagram schematically showing the operation of the power transmission member of the present invention when the head collides.
- ⁇ 10 A diagram schematically showing the operation of the power transmission member of the present invention when the head collides.
- ⁇ 11 A diagram schematically showing the operation of the power transmission member of the present invention when the head collides.
- FIG. 12 is a diagram schematically showing the operation of a conventional power transmission member when a head collides.
- FIG. 13 is a diagram schematically showing the operation of a conventional power transmission member when a head collides.
- FIG. 14 is a diagram schematically showing the operation of a conventional power transmission member when a head collides.
- FIG. 15 is a diagram schematically showing the operation of another conventional power transmission member when the head collides.
- FIG. 16 is a structural perspective view showing the overall structure of a head transfer mechanism in a conventional disk device.
- FIG. 17 is a detailed view showing a configuration of a power transmission member unit in the conventional disk device of FIG.
- FIG. 18 is a detailed view showing a state in which the tooth portion and the lead screw are engaged in the transmission unit in the conventional disk device of FIG.
- FIG. 19 is a structural perspective view showing the overall structure of a head transfer mechanism in another conventional disk device.
- FIG. 20 is a detailed view showing a state of engagement between the lead screw and the power transmission member in the conventional disk device of FIG.
- the disk device according to the present embodiment is an optical disk device that records or reproduces an optical disk rotated by a rotating mechanism by irradiating a light beam with an optical head.
- the optical head guides in the radial direction of the disk. This is a general configuration to be transferred.
- FIG. 1 is a schematic configuration diagram of a disk device according to the present embodiment.
- reference numeral 1 denotes a turntable on which a disk (not shown) is placed and fixed, and is rotated by a spindle motor 2.
- the spindle motor 2 is fixedly supported on the chassis 3.
- the disc and the chucking member for fixing the disc are omitted.
- 5 indicates an optical head that emits a light beam.
- Reference numerals 6 and 7 denote a main guide shaft and a sub guide shaft for guiding the optical head 5 in the radial direction of the disk mounted on the turntable 1, respectively.
- the main guide shaft 6 and the sub guide shaft are each a bearing provided on the base surface 3E of the chassis 3.
- Reference numeral 8 denotes a transfer motor serving as a drive source for transferring the optical head 5 in the radial direction of the disk mounted on the turntable 1
- 9 denotes a spiral continuous groove formed on the axial peripheral surface of the transfer motor 8.
- a lead screw that rotates with a driving force on the same axis.
- Reference numeral 10 denotes a power transmission member that engages with the lead screw 9 and transmits a thrust force that moves the optical head 5 in the radial direction of the disk.
- FIG. 2 is a detailed view showing a state in which the power transmission member 10 is engaged with the lead screw 9.
- 8A is a motor bracket attached to the transfer motor 8 and for fixing and supporting the transfer motor 8 to the base 3.
- 9A indicates a spiral continuous groove provided in the lead screw 9.
- Reference numeral 10A denotes a nut portion that is attached to the power transmission member 10 and is a part of a spiral rib that is fitted and engaged with the continuous groove 9A.
- the spiral direction of the continuous groove 9A is a right-hand thread.
- FIG. 3 is a cross-sectional view regarding the plane P1 in FIG.
- the plane P1 is a virtual plane that includes the axes of the transfer motor 8 and the lead screw 9 and is parallel to the disk mounting surface of the turntable 1 in FIG.
- the continuous groove 9A and the nut portion 10A have a trapezoidal cross section with a hypotenuse forming an inclination angle A1, and the hypotenuses of the trapezoid are in contact with each other.
- the nut portion 10A is pressed against the continuous groove 9A with the pressing force F1.
- a thrust force F2 is generated in the continuous groove 9A.
- the propulsive force F2 is decomposed into a horizontal force F3 and a vertical force F4 acting on the nut portion 10A.
- the frictional force R11 in the direction parallel to the horizontal force F3 is expressed by (Equation 1).
- F4 can be expressed as (Equation 2) below.
- Equation 1 can be expressed as (Equation 3) below.
- Rl l Ml 'F2cos (Al)
- F3 can be expressed as (Equation 4) below.
- Equation 5 Since Ml is less than 1 and Al is less than 90 degrees, the right side of (Equation 5) is always a positive number.
- FIG. 4 is a schematic perspective view of the restricted state of the nut portion 10A and the continuous groove 9A as seen from the direction of the arrow PJ in FIG.
- Nut 10A and continuous groove 9A both have an advance angle of A2.
- the friction coefficient at the interface between them is M2.
- F7 can be expressed as (Equation 8) below.
- R2 can be expressed as (Equation 9) below.
- F8 can be expressed as (Equation 10) below.
- Equation 12 From (Equation 9) to (Equation 11), it can be expressed as the following (Equation 12).
- the success or failure of this condition is determined by the value of the friction coefficient M2 and the lead angle A2, that is, the result differs depending on the combination of the material of the lead screw 9 and the nut portion 10A and the design value of the lead angle A2. For example, when the friction coefficient M2 is 0.2 and the lead angle A2 is 15 degrees, the right side of (Equation 13) is 0.27, which is true.
- head 5 With the amount of movement that occurs at the maximum speed reached by the acceleration obtained during this forced transfer, head 5 is either held by base 3 itself or base 3 at the limit of the movable range. Collide with other members. Due to this collision, much of the amount of movement of the head 5 acts as an impact force on the head 5, the base 3 or other members, and mainly causes deformation of the members or breakage of the fastening portion.
- the momentum is reduced, it becomes possible to avoid deformation of the member or damage to the fastening portion.
- FIG. 5 is a diagram showing a detailed structure of the power transmission member 10.
- 10C indicates a nut holding portion that integrally holds the nut portion 10A and the regulating portion 10B.
- the nut holding portion 10C is supported by a support column 10DZ support column 10E, and can swing in the direction of arrow D5 or arrow D6 when the support column 10DZ support column 10E is pinched.
- the nut holding portion 10C includes a nut holding portion abutting column 10F and a nut holding portion abutting column 10G.
- a fixed portion abutting column 10J and a fixed portion abutting column 10K are configured in a body-like manner on the fixed side 10H of the power transmission member 10 to the head 5.
- Nut holding part contact column 10FZ Nut holding part Contact column 10G has a nut side contact surface 10FAZ nut side contact surface 10GA
- Contact Column 10JZ Fixed Part Contact Column 10K has a fixed side contact surface 10JAZ fixed side contact surface 10KA.
- Nut side contact surface 10FAZ Nut side contact surface 10GA and fixed side contact surface 10J AZ fixed side contact surface 10KA are opposed to each other with a gap P therebetween.
- the head 5 is further subjected to an inertial force that moves in the direction of the transfer.
- This inertial force causes the nut holder 10C to swing with respect to the fixed side 10H in the direction opposite to the transfer.
- the kinetic energy is attenuated by being converted into the elastic energy necessary to distort the support column 10D / support column 10E.
- the nut-side contact surface 10FAZ nut-side contact surface 10GA contacts the fixed-side contact surface 10JAZ fixed-side contact surface 10KA, respectively.
- the head 5 stops moving.
- the amount of kinetic energy converted at this time depends on the panel constant of the support column 10DZ support column 10E.
- the condition for converting all of the kinetic energy due to the transfer of the head 5 to the elastic energy for constricting the support column 10DZ support column 10E is that the mass of the head 5 is Mh, and the nut side contact surface 10FAZ nut side contact surface 10GA is fixed side contact surface 10JA
- the speed of the head 5 just before contacting the Z fixed side contact surface 10KA is Vh and the total panel constant of the support column 10DZ support column 10E is Ks, it can be expressed as (Equation 14).
- the lead screw 9 is also forcibly rotated if the condition of (Equation 13) is satisfied as described above, but it is opposite to the initial transfer.
- it is forcibly transferred to the opposite side, it is similarly rotated to the opposite side.
- rotational inertia is given to the lead screw 9, and the nut portion 10A receives a force in a direction deviating from the continuous groove 9A.
- the restriction force of the restriction part 10B is less than the force F5 acting in the direction in which the continuous groove 9A force also deviates. If the breaking strength of the restriction part 10B cannot withstand F5 and breaks and no restriction force is generated, This is a case where the elastic force of the restricting portion 10B is smaller than F5. In the former case, since the regulating force is lost after breakage, the nut portion 10A cannot be prevented from deviating from the continuous groove 9A. Also in the latter case, the elastic force of the restricting portion 10B must be such that the elastic force of the nut portion 10A is greater than F5 in the region of displacement required to deviate from the continuous groove 9A force. For example, the deviation of the continuous groove 9A force of the nut part 10A cannot be regulated.
- the nut portion 10A may deviate from the continuous groove 9A force due to deformation or breakage of the nut portion 10A or the lead screw 9. However, if the nut portion 10A deviates from the continuous groove 9A force, a transfer propulsion force cannot be applied to the power transmission member 10 from the lead screw 9. That is, it becomes impossible to transfer the head 5, and the optical disk apparatus does not function.
- the head 5 receives an impact and the nut side contact surface 10FAZ nut side contact surface 10GA is fixed side contact surface 10JAZ fixed side contact surface
- the nut side contact surface 10FAZ nut side contact surface 10GA is fixed side contact surface 10JAZ fixed side contact surface
- the stagnation of the support column 10DZ support column 10E is released, no force is transmitted to the nut holding portion 10C and it is stationary.
- there is a time delay until the head 5 receives an impact and the force of the nut holder 10C receives the transfer force in the direction opposite to the initial transfer.
- the transfer force to the side opposite to the initial transfer that propagates to the nut holding portion 10C can be attenuated.
- FIGS. 12 to 15 show a conventional configuration for comparison with the present embodiment.
- FIG. 9 shows a state in which the head 5 is forcibly transferred in the direction of arrow D1, and the nut-side contact surface 10GB is in contact with the contact surface 8AG. At this stage, the displacement of the nut portion 1OA, which is a part of the power transmission member 10, with respect to the contact surface 8AG stops.
- the nut portion 10A and the fixed side 10H are configured to be inertially displaceable by the support column 10DZ10E, so the head 5 itself is also inertial relative to the nut portion 10A. Displaceable. Therefore, even if the nut-side contact surface 10GB contacts the contact surface 8AG, the head 5 maintains the transfer force itself due to the inertia of the force remaining in the arrow D1 direction. At this time, the force of F10 is acting on the head 5 and the power transmission member 10.
- FIG. 10 shows a state immediately after the state shown in FIG. 9, in which the head 5 inertially deforms the support column 10DZ10E due to inertia.
- the force of F10 is distributed and distributed by the weight ratio of head 5 and nut part 10A due to inertial deformation of support column 10DZ10E, Fl 1 in head 5 and smaller than F11 in nut part 10A F12
- the power of work is also sustained.
- FIG. 11 shows a state immediately after the state shown in FIG. 10, in which the head 5 is returned in the direction of the arrow D2 by a reaction due to the elastic force of the support column 10DZ10E. At this time, the nut-side contact surface 10GB maintains contact with the contact surface 8AG. At this stage, the head 5 and the nut portion 10A act as a reaction of F11 and F12, and the forces of F13 and F14, which are such that F11 and F12 are slightly damped in the direction of the arrow D2.
- the basic configuration of the head 5, the power transmission member 10, the lead screw 10 and the contact surface 8A is the same as that in FIGS. 9 to 11 showing the present embodiment. Although it is substantially the same, the structure of the power transmission member 10 is different.
- the difference of the power transmission member 10 between the configuration of the present embodiment shown in FIGS. 9 to 11 and the configuration shown in FIGS. 12 to 14 is that the impact of the collision when the head 5 is forcibly transferred is mitigated. It is a structure that fulfills the function of In the configuration of the present embodiment, the impact is absorbed by the elasticity of the support column 10DZ10E. In the configurations shown in FIGS. 12 to 14, the impact is absorbed by the elasticity of the buffer panel portion 110E. This operation will be described below.
- the power transmission member 10 is configured in a state where the nut portion 10A and the fixed side 10H are rigid. Further, a buffer panel portion 110E is provided on the surface of the power transmission member 10 that faces the contact surface 88AG on the arrow D1 side.
- FIG. 12 shows a state in which the head 5 is forcibly transferred in the direction of the arrow D1 and the buffer panel portion 110E is in contact with the contact surface 8AG.
- the displacement of the power transmission member 10 with respect to the contact surface 8AG stops.
- the lead screw 9 rotates in the direction of the arrow R2
- a transfer force of the head 5 in the direction of the arrow D11 is generated. Therefore, when the head 5 is forcibly transferred in the direction of the arrow D1 by other external force,
- the lead screw 5 is forcibly rotated in the direction of the arrow R2 and the rotational inertia remains even at the stage shown in FIG.
- the power transmission member 10 is configured to be capable of inertial displacement by the buffer panel portion 110E, the head 5 itself can be inertially displaced with respect to the contact surface 88AG. For this reason, even if the buffer panel portion 110E comes into contact with the contact surface 88AG, the head 5 maintains the transfer force itself due to the inertia of the force remaining in the arrow D1 direction. At this time, the force of F10 is acting on the head 5 and the power transmission member 10. This force is the same as F10 in Fig. 9.
- FIG. 13 shows a state immediately after the state shown in FIG. OE is inertially deformed.
- the force of F10 is F15 on the head 5 and F16 on the nut 1 OA, but the nut 10A is rigidly configured with respect to the fixed side 10H.
- the working force F15 is equivalent to the force F16 acting on the nut 10A. Further, the rotational force in the direction of arrow R2 acting on the lead screw 9 is maintained.
- FIG. 14 shows a state immediately after the state shown in FIG. 13, in which the head 5 is returned in the direction of the arrow D2 by a reaction due to the elastic force of the buffer panel portion 110E. At this time, the buffer panel portion 110E maintains contact with the contact surface 88AG. At this stage, the head 5 and the nut portion 10A act as a reaction force of F15 and F16. Since the working force F15 and the force F1 6 acting on the nut portion 10A are equivalent, the force F17 acting on the head 5 caused by the reaction and the force F18 acting on the nut portion 10A are also equivalent.
- the power transmission member 10 is configured such that the nut portion 10A and the fixed side 10H can be relatively displaced relative to each other, so that the head 5 is forcibly transferred and collided. It is possible to prevent the nut portion 10A from deviating from the continuous groove 9A during the subsequent reaction. This makes it possible to prevent the head 5 from being transferred by the lead screw 9 after the collision occurs. Furthermore, according to the power transmission member 10 according to the present embodiment, as an accompanying effect, the head 5 can be easily positioned, and noise and vibration generated by the transfer of the head 5 are also small. Specifically, when the nut-side contact surface 10GB contacts the contact surface 8AG, the head 5 can be positioned with respect to the chassis 3.
- the support column 10DZ support column 10E is supported so that the amount of stagnation of the support column 10DZ support column 10E is sufficiently smaller than the amount required for the transfer accuracy of the head 5. Only when 10E stiffness is set. Further, noise and vibration generated by the transfer of the head 5 are absorbed by the fine movement of the support column 10DZ support column 10E.
- the power transmission member 10 in the above embodiment has a structure in which the support column 10DZ and the support column 10E are held in order to have a function of displacing the nut holding portion 10C with respect to the fixed side 10H. Another structure that performs the above function may be used. In the above-described embodiment, it is possible to obtain elasticity by buckling of a column made of an elastic material, for example, a force obtained by bending the support column 1 ODZ support column 10E in the longitudinal direction.
- the nut holding portion abutting column 10F, the nut holding portion abutting column 10G and the fixing portion abutting column 10J Z fixing portion It is also effective to improve the energy that can be absorbed by connecting the part with the gap G5 and G6 remaining between the contact column 10K and extending the elastic deformation part to the whole to increase the rigidity. Means.
- the gap between the nut-side contact surface 10FAZ nut-side contact surface 10GA and the fixed-side contact surface 10JAZ fixed-side contact surface 10KA of the power transmission member 10 It is effective to fill the surface with a damping member such as an elastomer.
- a damping member such as an elastomer. Examples of materials suitable for such applications include butyl rubber and silicon rubber.
- damping members are attached to any one of the nut side contact surface 10FAZ nut side contact surface 10GA or the fixed side contact surface 10JAZ fixed side contact surface 10KA without filling the gap. Even if attached, the damping effect can be enhanced.
- the material itself of the power transmission member 10 is made of a material having a high damping property such as an elastomer, so that the damping property when the support column 10DZ support column 10E is pinched or Gap side contact surface 10FAZ Nut side contact surface 10GA and fixed side contact surface 10JAZ fixed side contact surface 1 It is possible to enhance the attenuation when contacting the OKA.
- the force holding member 10C and the fixed side 10H are integrated with the nut holding part 10C, the support column 10D, and the fixed side 10H.
- they may be connected by separate elastic members 10M and 10N such as plate panels.
- they may be connected by a separate elastic member such as a coil panel. In this case, a similar effect can be obtained by setting an appropriate panel constant.
- Fig. 5 is effective in reducing the number of parts, but it may be difficult to operate the panel constant in consideration of the relationship with other functions.
- a separate structure as shown in Fig. 7 or Fig. 8 is effective because the number of parts can be increased, but the degree of freedom of the panel constant can be expanded.
- the head 5 is transferred by using a so-called screw feed mechanism by the lead screw 9, but instead, by using a so-called rack and pinion mechanism. .
- the power transmission member and the disk device of the present invention are, as means for recording or reproducing data, specifically, a recorder for recording video or audio content, a player for reproduction, a storage for personal computers, etc. It is effective as
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800129482A CN101164113B (zh) | 2005-04-19 | 2006-04-18 | 头移送机构的动力传递部件以及具备该头移送机构的盘装置 |
JP2007514612A JP4499784B2 (ja) | 2005-04-19 | 2006-04-18 | ヘッド移送機構の動力伝達部材および同ヘッド移送機構を備えたディスク装置 |
US11/918,782 US7844983B2 (en) | 2005-04-19 | 2006-04-18 | Power transmission member for head movement mechanism, and disk device equipped with the head movement mechanism |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005120567 | 2005-04-19 | ||
JP2005-120567 | 2005-04-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006115127A1 true WO2006115127A1 (ja) | 2006-11-02 |
Family
ID=37214748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/308145 WO2006115127A1 (ja) | 2005-04-19 | 2006-04-18 | ヘッド移送機構の動力伝達部材および同ヘッド移送機構を備えたディスク装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7844983B2 (ja) |
JP (1) | JP4499784B2 (ja) |
CN (1) | CN101164113B (ja) |
WO (1) | WO2006115127A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012164397A (ja) * | 2011-02-07 | 2012-08-30 | Funai Electric Co Ltd | 光ディスク装置のドライブ装置 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008241730A (ja) * | 2007-03-23 | 2008-10-09 | Fujitsu Ten Ltd | 表示制御装置、表示装置及び表示制御方法 |
JP2011165251A (ja) * | 2010-02-08 | 2011-08-25 | Hitachi Consumer Electronics Co Ltd | 光ディスク駆動装置 |
KR101330818B1 (ko) * | 2011-07-29 | 2013-11-15 | 도시바삼성스토리지테크놀러지코리아 주식회사 | 픽업 댐퍼 및 이를 구비하는 디스크 드라이브 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH05234281A (ja) * | 1991-12-28 | 1993-09-10 | Sony Corp | ピックアップ装置送り機構 |
JPH1074370A (ja) * | 1996-05-21 | 1998-03-17 | Matsushita Electric Ind Co Ltd | ヘッド移送装置 |
JP2000260133A (ja) * | 1999-03-11 | 2000-09-22 | Funai Electric Co Ltd | ディスク装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5696494A (en) * | 1996-11-04 | 1997-12-09 | Chen; Chih-Tsung | Rotary unit and illumination unit for a 3-side variable advertisement display board |
JP2000339882A (ja) | 1999-05-31 | 2000-12-08 | Pioneer Electronic Corp | 情報記録再生装置 |
JP3633588B2 (ja) * | 2002-06-20 | 2005-03-30 | 日本電気株式会社 | ディスク装置のヘッド駆動装置 |
US7402926B2 (en) * | 2002-11-08 | 2008-07-22 | Asmo Co., Ltd | Actuator device |
CN1220188C (zh) * | 2003-01-30 | 2005-09-21 | 明基电通股份有限公司 | 具有一连接装置的光学读取头的承载装置 |
TW200823872A (en) * | 2006-11-24 | 2008-06-01 | Datatronics Technology Inc | Auto feed, copy and print apparatus for compact disks and method of the same |
US8418662B2 (en) * | 2008-07-18 | 2013-04-16 | Korea Plant Service & Engineering Co., Ltd. | Apparatus for visually inspecting and removing foreign substance from gap of heat tube bundle in upper part of tube sheet of second side of steam generator |
-
2006
- 2006-04-18 WO PCT/JP2006/308145 patent/WO2006115127A1/ja active Application Filing
- 2006-04-18 CN CN2006800129482A patent/CN101164113B/zh not_active Expired - Fee Related
- 2006-04-18 JP JP2007514612A patent/JP4499784B2/ja not_active Expired - Fee Related
- 2006-04-18 US US11/918,782 patent/US7844983B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05234281A (ja) * | 1991-12-28 | 1993-09-10 | Sony Corp | ピックアップ装置送り機構 |
JPH1074370A (ja) * | 1996-05-21 | 1998-03-17 | Matsushita Electric Ind Co Ltd | ヘッド移送装置 |
JP2000260133A (ja) * | 1999-03-11 | 2000-09-22 | Funai Electric Co Ltd | ディスク装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012164397A (ja) * | 2011-02-07 | 2012-08-30 | Funai Electric Co Ltd | 光ディスク装置のドライブ装置 |
Also Published As
Publication number | Publication date |
---|---|
US20090064215A1 (en) | 2009-03-05 |
JP4499784B2 (ja) | 2010-07-07 |
US7844983B2 (en) | 2010-11-30 |
CN101164113B (zh) | 2012-03-28 |
JPWO2006115127A1 (ja) | 2008-12-18 |
CN101164113A (zh) | 2008-04-16 |
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