JP3257141B2 - Disk drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive for recording and / or reproducing information on a recording disk such as an optical disk or a magneto-optical disk.

[0002]

2. Description of the Related Art Hitherto, a disk drive for recording and / or reproducing information on a recording disk such as an optical disk or a magneto-optical disk has been proposed. In such a disk drive device, mainly configured as a so-called portable disk drive device,
As shown in FIG.
3 has a lid 202 that is rotatably supported through the cover 3.

In this disk drive device, a substantially circular disk mounting recess 206 having a size corresponding to the diameter of a recording disk is formed in the upper surface of the main body 201. The disk drive block 11 is provided on the bottom surface of the disk mounting recess 206.

[0004] The disk drive block 11 has a disk table and an optical pickup device 13. The disk table includes a table portion 12 and a fitting protrusion 1 protruding from the table portion 12.
8 and the disk drive block 11
The rotary operation is performed by a spindle motor (not shown) provided in the printer. The fitting projection 18 includes three spheres 19, 19, 19 partially facing outward, and these spheres 1, 19, 19.
An elastic member that elastically urges 9, 19, 19 toward the outside is built in. The fitting projection 18 is configured to be fitted into a chucking hole 103 formed in the center of the recording disk 101. The optical pickup device 13 is configured to be able to write and / or read information signals to and from the recording disk 101.
The moving operation can be performed in the direction of approaching and separating from the disk table.

[0005] The lid 202 is opened and closed by opening and closing the disc mounting recess 206 by being rotated with respect to the main body 201. The lid 202 has a lock piece 204 on the lower surface, and
When the cover 6 is closed, the lock piece 204 is engaged with a lock member (not shown) provided on the main body 201 to be held in the closed state. When the lid opening button 205 provided on the main body 201 is pressed, the lid 202 is released from being engaged with the lock piece 204 by the lock member, and can rotate with respect to the main body 201. Becomes

To mount the recording disk 101 on the disk drive, the cover 202 is rotated in a direction away from the main body 201 as shown by an arrow S in FIG. Is opened to open the disc mounting recess 206. Then, when the recording disk 101 is inserted into the disk mounting recess 206 and the recording disk 101 is pressed against the disk table, the recording disk 101 is pressed.
The fitting projection 18 is fitted into the chucking hole 103, and the periphery of the chucking hole 103 is placed on the table section 12 and mounted on the disk table. At this time, after each of the spheres 19, 19, 19 is moved inward of the fitting projection 18 against the urging force of the elastic member, the inner edge of the chucking hole 103 is elastically moved. To prevent the recording disk 101 from dropping off the disk table.

In this state, the recording disk 10
1 is capable of rotating together with the disc table, and the optical pickup device 13
Thus, writing and / or reading of an information signal can be performed.

To remove the recording disk 101 mounted on the disk drive from the disk drive, a pair of notches 207, 207 formed on both sides of the disk mounting recess 206 are provided. , Two portions of the outer peripheral edge of the recording disk 101 are gripped, and the recording disk 101 is pulled upward.

[0009]

By the way, in the above-mentioned disk drive device, the recording disk 10
In mounting and removing the disk drive 1, the lid 202 needs to be opened with a sufficiently large rotation angle with respect to the main body 201. That is, the lid 202 is attached to the main body 201.
If the opening angle with respect to the disk table is not sufficiently large, the movement of the recording disk 101 which is moved in a direction substantially perpendicular to the disk table for loading and unloading to and from the disk table is hindered. .

The fact that the opening angle of the lid 202 must be increased when the recording disk 101 is loaded or unloaded makes it difficult to replace the recording disk 101 when carrying the disk drive. This impairs the portability of the disk drive.

When the recording disk 101 is attached to and detached from the disk cable, the recording disk 101 is gripped and handled by fingers or the like, and the spheres 19, 19,
19 against the urging force of the elastic member.
8 to receive the stress by moving it inward,
There is a great risk of damage and fouling.

Accordingly, the present invention has been proposed in view of the above-mentioned circumstances, and is a disk drive device having a lid, which is required to replace a recording disk. It is an object of the present invention to provide a disk drive device having good portability by reducing the size of the recording disk and capable of preventing the recording disk from being damaged or stained when the recording disk is replaced.

[0013]

In order to solve the above-mentioned problems and to achieve the above-mentioned object, a disk drive according to the present invention comprises a chassis and a chucking hole provided on the chassis and formed at the center of a recording disk. And a pressing support means provided on the table portion, which is fitted on the table portion, presses and supports the inner wall portion of the chucking hole to hold the recording disk. A disk table having a fitting projection and rotated by a spindle motor, and one end of the chassis is rotatably supported by one end near the one end and can be brought into contact with and separated from the upper surface of the chassis. A cover, a disc pressing member rotatably supported by the cover on the lower surface side of the cover, and disposed opposite to the disc table, and a cover of the cover. A cam mechanism for defining a rotation angle of the disc pressing member with respect to the lid in accordance with a rotation angle with respect to the chassis; A disc lift plate interposed between the member and the recording disk, and a turning angle of the disc lift plate with respect to the lid according to a turning angle of the lid with respect to the chassis. The cam mechanism and the link mechanism are arranged at a pivotal position where the disc pressing member projects downward from the lid when the lid is in an open state in which the lid is separated from the chassis. By holding the disc lift plate parallel to the chassis at a position further away from the chassis than the upper end of the fitting protrusion. The recording disk placed on the disk lift plate is separated from the disk table, and when the lid is rotated in a direction approaching the chassis, the disk pressing member is used to place the disk on the disk lift plate. While pressing the central portion of the placed recording disk downward, the disk pressing member is rotated toward the lid, and the disk lift plate approaches the chassis while maintaining a state parallel to the chassis. When the fitting protrusion of the disk table is fitted into the chucking hole of the recording disk, the recording disk is mounted on the disk table by the pressing support means, and when the lid is closed. Holding the disc pressing member at a position close to the lid, and bringing the disc lift plate close to the chassis. Thus, the disk pressing member and the disk lift plate are separated from the recording disk mounted on the disk table.

According to the present invention, in the above-mentioned disk drive device, a pair of positioning members movably disposed on a chassis, and the positions of the positioning members engaged with the pair of positioning members are set on the disk table. A connection lever which is positioned symmetrically with respect to one plane including the central axis, wherein each of the positioning members is provided when a recording disk having a smaller diameter than the diameter corresponding to the disk lift plate is placed on the disk lift plate. The small-diameter recording disk is moved in a direction approaching the disk table, and abuts two locations on the outer peripheral edge of the small-diameter recording disk so that the chucking hole of the recording disk and the disk table are concentric. is there.

Further, according to the present invention, in the above disk drive device, the link mechanism has one end rotatably supported by the chassis and the other end rotatably supported by the lid. By supporting the disc lift plate with the support provided between the other end, the disc lift plate can be moved substantially in parallel with the chassis with the rotation of the lid. Further, the cam mechanism is formed between the one end and the other end.

[0016]

In the disk drive device according to the present invention, the disk drive device is rotatably supported by the chassis and is rotatably supported by the lower surface of the lid which can be brought into contact with and separated from the upper surface of the chassis. The cam mechanism for defining a rotation angle of the disc pressing member disposed opposite to the disc table disposed on the cover with respect to the lid according to a rotation angle of the lid with respect to the chassis includes the lid body. When the cover is in the open state separated from the chassis, the disc pressing member is held at a turning position protruding downward from the cover, and when the cover is turned in a direction approaching the chassis. The disk pressing member is turned to the cover side while the central portion of the recording disk is pressed downward by using the disk pressing member, and the fitting protrusion of the disk table is fitted into the chucking hole of the recording disk. Combination Then, the recording disk is mounted on the disk table by the pressing support means, and when the lid is closed, the disk pressing member is held at a position close to the lid to hold the disk on the disk table. Since the disk pressing member is separated from the mounted recording disk, the recording disk is mounted on the disk table in conjunction with the closing operation of the lid, and the recording disk mounted on the disk table is moved. Make it rotatable.

The disc lift plate, which is rotatably supported by the lid and is interposed between the chassis and the disc pressing member, and on which the recording disc is mounted, rotates with respect to the lid. The link mechanism that defines the moving angle according to the rotation angle of the lid with respect to the chassis, when the lid is in an open state separated from the chassis,
By holding the disk lift plate parallel to the chassis at a position more distant from the chassis than the upper end of the fitting protrusion, the recording disk mounted on the disk lift plate can be moved from the disk table by the disk table. When the cover is rotated in a direction approaching the chassis, the disc lift plate is moved closer to the chassis while being kept in a state parallel to the chassis, so that the disc lift plate approaches the chassis, so that the disc lift plate approaches the chassis. When the fitting protrusions of the disk table are fitted, the recording disk can be mounted on the disk table. When the lid is closed, the disk lift plate is attached to the chassis. Since the disk lift plate is separated from the recording disk mounted on the disk table by approaching, the lid is closed. In conjunction with the operation, the recording disk is set in a state in which the recording disk can be mounted on the disk table, and the recording disk mounted on the disk table is not in a rotatable state. In conjunction therewith, the recording disk is removed from the disk table.

In the above-described disk drive device according to the present invention, a pair of positioning members movably disposed on the chassis, and the positions of the positioning members engaged with the pair of positioning members are set to the positions of the disk. A connection lever provided at a position symmetrical with respect to one plane including the center axis of the table, wherein each of the positioning members mounts a recording disk having a diameter smaller than a diameter corresponding to the disk lift plate on the disk lift plate; When the recording disk is moved, it is moved in the direction approaching the disk table and abuts two locations on the outer peripheral edge of the small-diameter recording disk so that the chucking hole of the recording disk and the disk table are concentric. In this case, accurate positioning of the small-diameter recording disk with respect to the disk table becomes possible. Attachment to the disk table in conjunction with the opening and closing operation of the lid of the recording disk of diameter is made possible.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 13 and 14, a recording disk used as a recording medium for information signals in the disk drive device according to the present invention is formed of a disk-shaped disk substrate made of a transparent synthetic resin material or the like, and made of aluminum or the like. A reflective film, a magnetic material, or the like is adhered and formed. In this recording disk, one main surface portion is a signal recording surface portion on which information signals are recorded. The large-diameter recording disk 101 shown in FIG. 13 has, for example, a diameter of about 12 cm. The small-diameter recording disk 102 shown in FIG. 14 has, for example, a diameter of about 8 cm. These recording disks 101 and 102
Has a chucking hole 103 at the center. The chucking hole 103 is a circular through hole having a diameter of, for example, about 15 mm. In these recording disks 101 and 102, the portion excluding the peripheral portion of the chucking hole 103 and the portion near the outer peripheral edge of the disk substrate is a signal recording area.

The disk drive according to the present invention has a chassis 1 as shown in FIGS. The chassis 1 is formed in a substantially flat plate shape using a material such as a metal. The chassis 1 has a pair of side walls 2 on both side edge portions. These side wall portions 2 and 2 are formed by bending a part of both side portions of the chassis 1 upward at substantially right angles. The chassis 1 is provided in an outer housing (not shown) having a size substantially corresponding to the chassis 1. The outer housing is formed so as to cover the lower surface of the chassis 1, and opens the upper surface of the chassis 1 upward.

A disk drive block 11 is mounted on the chassis 1. The disk drive block 11 includes a frame portion made of a material such as a synthetic resin, and a spindle motor 70 attached to the frame portion.
And an optical pickup device 13 and the like. A disk table is mounted on the drive shaft of the spindle motor 70. The optical pickup device 13 includes a light source such as a semiconductor laser, a light receiving element such as a photodiode, and various optical devices.
The information signals can be written to and / or read from the recording disks 101 and 102. The optical pickup device 13 has a frame portion of the disk drive block 11 as shown by an arrow T in FIG.
It is supported so as to be movable in the direction of contact and separation with the spindle motor 70.

The disk drive block 11 has three damper members 16, 1 on the lower surface of the chassis 1.
It is mounted via 6, 16 and is so-called floating supported. That is, the disk drive block 11 has three pairs of engaging claws 15, 15, 15
have. These engaging claws 15, 15, 15 have
The damper members 16, 16, 16 are mounted correspondingly. These damper members 16, 16, 16
Are attached to the lower surface of the chassis 1 by set screws 17, 17, 17, respectively. The damper member 16 is formed in a substantially annular shape using a material such as butyl rubber.

The disk drive block 11 is provided with the disk table via an opening 7 formed in the chassis 1, and the upper surface side of the optical pickup device 13 on the light beam emission side is It faces the upper side of the chassis 11. The disk table protrudes above the upper surface of the chassis 11.

As shown in FIG. 8, the disk table has a disk-shaped table portion 12 and a fitting projection 18 disposed at the center of the upper surface of the table portion 12. I have. The table section 12 is formed in such a size that a portion around the chucking hole 103 of the recording disks 101 and 102, that is, a portion that is a non-signal recording area can be placed.

The fitting projection 18 has a substantially truncated cone shape and is formed to have a hollow portion. In the fitting projection 18, three spheres 19, 1 serving as pressing support means are provided.
9 and 19 are built-in. These spheres 19, 19, 1
9 is a through hole 2 formed in the peripheral surface of the fitting projection 18.
A part is projected outward from the peripheral surface of the fitting projection 18 via 0, 20, 20. The through holes 20 and 2
Reference numerals 0 and 20 are formed at positions at equal angular intervals about the center of the fitting projection 18. Each sphere 19, 1
8 and 9, the elastic member 72 built in the fitting projection 18 causes the elastic member 72 to move outward, that is, the arrow P in FIG.
As shown by an arrow Q in FIG. 9, the fitting projection 18 is elastically biased in a direction away from the center of the fitting projection 18. Further, the fitting projection 18 is provided at a position between the respective through holes 20, 20, 20, at a position between the leaf holes 21, 21 serving as pressing support means.
1, 21. These leaf spring portions 21, 21, 2,
Reference numeral 1 denotes a portion between the three pairs of slits provided on the outer wall of the fitting projection 18, and the free end is formed on the distal end side.

In the disk table, when the chucking holes 103 of the recording disks 101 and 102 are externally fitted to the fitting projections 18, the recording disks 101 and 102 move to the inner edges of the chucking holes 103. The portion is pressed and supported by the spheres 19, 19, 19, and is placed, held, and mounted on the table portion 12 in a so-called centered state.

The recording disks 101 and 102 mounted on the disk table are rotated together with the disk table by the spindle motor 70. The optical pickup device 13 can write and / or read information signals to and from the recording disks 101 and 102 rotated by the spindle motor 70.

A lid 68 is rotatably attached to the chassis 1. The lid 68 is formed of a synthetic resin material or the like, and is formed in a substantially flat shape so as to close the open upper portion of the outer casing. The lid 68 is rotatably supported on both side portions on the rear edge side by support holes 3, 3 provided on the rear edge side of the side wall portions 2, 2 of the chassis 1 via support shafts 69, 69. Have been. That is, the lid 68 is rotatable with respect to the chassis 1 around the rear edge side.
The chassis 1
Can be opened and closed.

A pair of pivot plates 56, 56 are attached to the lower surface of the lid 68, that is, the side facing the chassis 1, on both sides. These pivot plates 56,
Reference numeral 56 denotes a substantially bar-shaped member having an L-shaped cross section formed by bending a strip-shaped metal plate or the like along the longitudinal direction.
One of the pivot plates 56, 56 has an L-shaped cross section attached to the lid 68, and the other side has an L-shaped cross section as a pair of pivot walls 57, 57. It is hung from the lid 68.

A pair of link arms 47, 47 constituting a cam mechanism and a link mechanism are disposed between the lid 68 and the chassis 1 so as to extend therethrough. That is, the base ends of the link arms 47, 47 are respectively supported by support shafts 48, 6 provided at substantially center positions of the side walls 2, 2 of the chassis 1.
Via 48 are mounted correspondingly. These link arms 47 are rotatable with respect to the chassis 1. And these link arms 47, 4
7 is engaged with the lid 68. Long holes 51, 51 having the longitudinal direction of the link arms 47, 47 as the long axis direction are provided at the distal ends of the link arms 47, 47.
Are formed. These elongated holes 51, 51 are provided with support pins 62,
62 are inserted correspondingly. These link arms 4
When the lid 68 is rotated with respect to the chassis 1, the pivots 7 and 47 are pivoted about the base shafts 48 and 48. At this time, the rotation angle of each of the link arms 47, 47 with respect to the chassis 1 is larger than the rotation angle of the lid 68 with respect to the chassis 1. At this time,
The support pins 62, 62 are connected to the link arms 47, 4 respectively.
7 moves in the longitudinal direction of the link arms 47 in the elongated holes 51.

Each of the link arms 47, 47
The angle at which the lid 68 can rotate with respect to the chassis 1 is regulated. As shown in FIG. 2, the lid 68 is provided at the end of each of the elongated holes 5 at the distal ends of the link arms 47 and 47.
In the rotation position where the support pins 62 are in contact with the edge portions of the chassis 1, 51, that is, in the open state, further rotation in the direction away from the chassis 1 is not possible. In this open state, the rotation angle of the lid 68 with respect to the chassis 1 is about 20 ° to 30 °. As shown in FIG. 4, the lid 68 is rotated at a position where the upper portion of the outer casing is closed, that is, in the closed state, the front side of the lid 68 is attached to the side walls 2 and 2. Is positioned in contact with the upper edge of the. That is, the lid 68 is rotatable from the closed state to the open state.

The link arms 47, 47 are provided with spring retaining holes 52, 52 in the vicinity of the support shafts 48, 48 and above the support shafts 48, 48. . These spring retaining holes 52, 52 and the chassis 1
The tension coil springs 53 are stretched between the side walls 2 and 2 and the spring retaining holes 5 provided on the rear side of the support holes 6. These tension coil springs 53 are connected to the respective link arms 4.
As shown by an arrow U in FIG. 2, the members 7 and 47 are elastically biased to rotate away from the chassis 1, that is, in a direction to open the lid 68.

In the closed state, the lid 68 is hooked on a hook member provided on the outer casing, thereby resisting the urging forces of the tension coil springs 53, 53. The lid is held in the closed state. When the locking by the locking member is released, the lid 68 is moved to the tension coil springs 53, 53.
The cover is opened by the urging force of (1), and is kept in the open state.

A disc lift plate 40 is provided between the chassis 1 and the lid 68. The disk lift plate 40 is formed in a substantially flat shape from a material such as a thin metal plate. This disc lift plate 40
Has a pair of support wall portions 43, 43 formed by bending both side portions upward. The disk lift plate 40 is provided on the table 1 of the disk table.
2 has a circular through hole 41 large enough to be inserted. The disk lift plate 40 has a cutout 46 in a portion corresponding to the disk drive block 11, that is, a portion corresponding to the movable range of the optical pickup device 13. An arc-shaped narrow beam portion is formed between the notch 46 and the through hole 41. An annular disk support ridge 42 is formed around the through hole 41, that is, at a portion including the narrow beam portion. When the disc lift plate 40 is placed on the chassis 1, the disc table is inserted through the through hole 41, and the disc drive unit 11 faces the upper side through the notch 46. I do.

The disc lift plate 40 includes a pair of support shafts 44, 44 projecting outward from the rear edge portions of the support walls 43, 43, respectively. 57
It is rotatably supported by the lid 68 by being fitted into support holes 58 formed in the rear end side portion. The disc lift plate protrudes from the pair of support shaft holes 45, 45 formed in the front edge portions of the support walls 43, 43 in the middle of the link arms 47, 47. The operation pins 49, 49 are fitted.
When the lid 68 is rotated with respect to the chassis 1, the disc lift plate 40 comes into contact with and separates from the chassis 1 while maintaining a state substantially parallel to the chassis 1. . That is, as shown in FIG. 2, when the lid 68 is in the open state, the disc lift plate 40 is floated on the chassis 1. At this time, the disc lift plate 40 is located above the upper end surface of the fitting projection 18 of the disc table. When the lid 68 is in the closed state, as shown in FIG.
The disk table is inserted into the through hole 41 so as to be in contact with the upper surface of the chassis 1 over the front surface.

The side walls 2, 2 of the chassis 1 are so arranged that the support shafts 44, 44 do not abut against the side walls 2, 2 when the lid 68 is closed. For this purpose, cutouts 4 and 4 having a substantially semicircular shape are formed at positions corresponding to these support shafts 44 and 44.

Each of the link arms 47 has an end cam portion 50 that constitutes a cam mechanism. These end face cams 50 are formed substantially halfway of the link arms 47 and 47 at positions closer to the distal ends of the link arms 47 and 47 than the operation pins 49 and 49. I have. These end face cam portions 5
0,50 is the lower side of each link arm 47,47,
That is, it is formed as a notch provided on the side edge portion on the side facing the chassis 1. These end face cam portions 5
Reference numerals 0 and 50 denote the link arms 47 and 47 on the distal end side of the link arms 47 and 47, that is, on the front side.
The cut amount from the side edge portion of the link arm 47 is small, and the cut amount from the side edge portion of the link arm 47 is increased on the base end side of the link arm 47, that is, on the rear side. Have been.

The disc lift plate 40 and the lid 68
And a disk pressing plate 6 which is a disk pressing member.
3 is disposed so as to be rotatable with respect to the lid 68. The disk pressing plate 63 is formed of a material such as a synthetic resin into a horizontally long substantially flat plate as shown in FIG. This disc pressing plate 63 has a central portion
It has a notch 67 opened to the rear side. The notch 67 has such a size that the fitting projection 18 of the disc table can be inserted. The disc pressing plate 63 has a pair of disc pressing projections 66, 66 near the rear edge of the lower surface and on both sides of the notch 67. These disk pressing protrusions 66, 66
1, 102 are formed in a range corresponding to the non-signal recording area on the center side. At both ends of the disc pressing plate 63, a pair of support shafts 65,
65 are protruded integrally. Further, a pair of copying pins 64, 64 are integrally provided at both ends of the disc pressing plate 63 so as to be located slightly rearward.

The disc pressing plate 63 fits the pair of support shafts 65 into support holes 61 formed in a slightly front end portion of the intermediate portions of the pivot support wall portions 57. Thereby, it is rotatably supported by the lid 68. That is, the disc pressing plate 63 is rotatable around the front edge side so that the rear edge side is brought into contact with and separated from the lid 68. The pivotable range of the disc pressing plate 63 with respect to the lid 68 is such that the trailing edge is separated from the pivoting position where the trailing edge abuts on the lower surface of the lid 68 so as to be separated from the lid 68 below. Each pivot wall 5
The rotation restricting protrusions 60 formed on the members 7 and 57 are up to the rotational position where the rotation is restricted.

The copying pins 64, 64 are located below the link arms 47, 47 and face the end face cams 50, 50. These copying pins 64, 6
Toggle springs 55, which are tension coil springs, are stretched between the spring arm 4 and the spring hooks 54, 54 formed on the distal ends of the link arms 47, 47, respectively. The toggle springs 55 urge the disk pressing plate 63 in different directions according to the relative rotation position of the lid 68 and the disk pressing plate 63. That is, when the lid 68 is in the open state and the disc pressing plate 63
In a state where the trailing edge of the disc pressing plate 63 is separated from the lid 68 by a predetermined angle or more, the toggle spring 55, 55, as shown by the arrow V in FIG. It is urged to rotate in the direction away from 68. The toggle springs 55 and 55 are indicated by arrows W in FIG. 4 when the lid 68 is in the closed state and the rear edge of the disc pressing plate 63 is substantially in contact with the lid 68. As shown in FIG.
Is urged to rotate in the direction in which it comes into pressure contact with.

When the copying pins 64, 64 are in contact with the end cam portions 50, 50, the disc pressing plate 63 moves the copying pins 64, 64 closer to the lid 68. Is restricted.

Each of the copying pins 64, 64 is attached to the lid 6
When the cover 8 is in the open state, as shown in FIG. 2, the link arms 47, 47 are in a state of being rotated below the cover 68, so that the end face cam portion 50,
50 is abutted on the front side portion. Therefore, at this time, the disc pressing plate 63 is connected to the end face cam portions 5.
Due to 0 and 50, it is held at a pivot position with respect to the lid 68, which is in a state of protruding below the lid 68.

When the lid 68 is in the closed state, the link pins 47 move along the sides of the lid 68, as shown in FIG. The end cams 50, 50
Opposes the rear side portion. Therefore, at this time, the disc pressing plate 63 can be rotated until the trailing edge side comes into contact with the lid 68. At this time, since the toggle springs 55 urge the disk pressing plate 63 to rotate in a direction in which the trailing edge of the disk pressing plate 63 is directed upward, the disk pressing plate 63 has a rear edge portion. It is positioned so as to be in contact with the lid 68.

The rear part on the chassis 1 is shown in FIG.
As shown in FIG. 6, a pair of positioning arms 30 and 34 serving as positioning members are distributed and arranged on both sides. These positioning arms 30 and 34 are respectively supported by support shafts 29 and
An intermediate portion is supported by a reference numeral 33 and is rotatable with respect to the chassis 1. These positioning arms 3
When the large-diameter recording disk 101 is mounted on the disk table, the support shafts 29 and 33 that support the large-diameter recording disk 101 are located rearward of the periphery of the large-diameter recording disk 101. It is arranged at a position where it does not come into contact with the large-diameter recording disk 101. Each of these positioning arms 3
Reference numerals 0 and 34 have the distal end side substantially directed forward and the base end side substantially directed rearward.

The positioning arms 30, 34
Is slidable in the axial direction with respect to each of the support shafts 29 and 33. And these positioning arms 30, 3
As shown by the arrow C in FIG. 2, the compression coil springs 38 and 39 are fitted on the support shafts 29 and 33 and are interposed between the positioning arms 30 and 34 and the chassis 1. It is elastically biased upward and is positioned in contact with the lower surface of the lid 68. Therefore, the positioning arms 30 and 34 are moved in the direction of contact and separation with the chassis 1 in conjunction with the opening and closing operation of the lid 68.

Disk contact portions 31 and 35 are formed at the distal ends of the positioning arms 30 and 34, respectively. The disk contact portions 31 and 35 are formed integrally with the positioning arms 30 and 35 to have a substantially cylindrical shape. The disk contact portions 31 and 35 are moved in the direction of contact and separation with respect to the chassis 1 in conjunction with opening and closing of the lid 68, so that the height above the chassis 1 is substantially equal to the height of the disk lift plate 40. They are all the same.

A connecting lever 22 is provided on the chassis 1 so as to extend between the positions where the positioning arms 30 and 34 are provided. The continuous lever 22 has a pair of long holes 23 and 24 arranged in the longitudinal direction, and a pair of 27 and 28 planted on the chassis is inserted into the long holes 23 and 24. By doing
It is slidably supported on the chassis 1 in the lateral direction. A pair of engagement holes 25 and 26 are provided at one end and the other end of the connection lever 22.
The engagement hole 25 at one end of the connection lever 22 is provided with an engagement pin 3 protruding from the distal end of one of the positioning arms 30.
2 is engaged. The engagement hole 26 at the other end of the connection lever 22 is engaged with an engagement pin 36 protruding from a base end portion of the other positioning arm 34.

Therefore, as shown by the arrow J in FIG. 5, when the connecting arm 22 is slid to one side,
As shown by an arrow L in FIG. 5, the one positioning arm 30 is rotated in a direction in which the tip side is outward.
The other positioning arm 34 is also rotated in a direction in which the tip side is outward as shown by an arrow K in FIG. Then, as shown by an arrow M in FIG.
Is slid to the other side, the one positioning arm 30 is rotated in a direction in which the tip side is inward as shown by an arrow N in FIG. 6, and the other positioning arm 34 is also As shown by the arrow O in FIG. That is, the connection arm 2
Reference numeral 2 designates the positioning arms 30 and 34 at rotational positions that are symmetric with respect to one plane including the rotation center axis of the disk table.

To mount the large-diameter recording disk 101 on the disk drive device according to the present invention having the above-described structure, first, as shown in FIG. 5, slide the connecting lever 22 to one side. The positioning levers 3
0 and 34 are rotated in such a direction as to separate the distal ends from each other. Next, the lid 68 is opened as shown in FIG. Then, the large-diameter recording disk 101 is
As shown by an arrow A in FIG. 2, the disc is inserted between the disc lift plate 40 and the disc pressing plate 63 from the front side,
It is placed on the disk lift plate 40. At this time, the positioning arms 30, 34 are, as shown in FIG.
The disk contact portions 31 and 35 are brought into contact with two locations on the outer peripheral edge of the large-diameter recording disk 101, so that the chucking hole 103 of the large-diameter recording disk 101 and the fitting projection 18 of the disk table. The large-diameter recording disk 101 is positioned such that the two are concentric. At this time, the large-diameter recording disk 101 abuts and supports the non-signal recording area on the center side by the disk supporting projection 42.

In order to mount the small-diameter recording disk 102 on the disk drive, first, as shown in FIG. 6, the connecting lever 22 is slid to the other side, and the positioning levers 30 and 34 are moved. Are rotated in a direction in which the leading ends of the two approaches each other. Next, the lid 68
Is in an open state as shown in FIG. Then, the small-diameter recording disk 102 is inserted between the disk lift plate 40 and the disk pressing plate 63 from the front side as shown by an arrow A in FIG.
Place on top. At this time, the positioning arms 3
6, the disc contact portions 31 and 35 contact the two outer peripheral edges of the small-diameter recording disk 102 as shown in FIG. The small-diameter recording disk 102 is positioned so that the disk table and the fitting projection 18 of the disk table are concentric. At this time, the non-signal recording area on the center side of the small-diameter recording disk 102 is abutted and supported by the disk supporting projection 42.

When the lid 68 is rotated in the closing direction, as shown by an arrow E in FIG. 3, the disc pressing plate 63 causes the end cam portions 50, 50 of the link arms 47, 47 to move. The rotation with respect to the lid 68 is restricted by the disk pressing projections 66 and 6.
6, the large-diameter or small-diameter recording disks 101, 1
The non-signal recording area on the center side of 02 is pressed from the top side.
At this time, the disc lift plate 40 is moved in a direction approaching the chassis 1. Each of the positioning arms 30 and 34 is pressed by the lid 68, and
As shown by the middle arrow F, the disk is moved so as to follow the disk lift plate 40 in the direction approaching the chassis 1.

The large-diameter or small-diameter recording disks 101 and 102 pressed by the disk pressing plate 63 have the fitting projections 18 fitted into the chucking holes 103. Each of the spheres 1 built in the fitting projection 18
Reference numerals 9, 19, and 19 press and support the inner wall of the chucking hole 103. These recording disks 101 and 102
Before the lid 68 is closed, the disc pressing plate 40 presses the disc pressing plate 40 to bring the peripheral portion of the chucking hole 103 into contact with the upper surface of the table portion 12. .

When the lid 68 is turned toward the chassis 1 and closed as shown by an arrow G in FIG. 4, the large-diameter or small-diameter recording disks 101 and 102 are closed.
Are already mounted on the disk table as shown in FIG. At this time, the disc lift plate 40
Is substantially in contact with the upper surface of the chassis 1 and is separated from the recording disks 101 and 102. The positioning arms 30, 34 are indicated by arrows I in FIG.
As shown by, the disk is moved to the chassis 1 side, but stops at a position slightly higher than the disk table, and the recording disks 101 and 102 mounted on the disk table.
The disk contact portions 31 and 35 are further separated from each other. The disc pressing plate 63 is connected to the end cam 50,
As shown by an arrow W in FIG. 4, by the toggle spring 50 and the respective toggle springs 55, 55, the trailing edge is turned in the direction of the lid 68 side, and separated from the recording disks 101, 102.

In this state, the spindle motor 70 is driven by the large-diameter or small-diameter recording disks 101 and 10.
2 can be rotated. The optical pickup device 13 is provided with the spindle motor 7.
Recording disks 101 and 102 rotated by 0
, Writing and / or reading of an information signal can be performed.

In order to take out the mounted large-diameter or small-diameter recording disks 101 and 102 from this disk drive, first, as shown by an arrow H in FIG. Rotate. By rotating the lid 68 in the opening direction, the disc lift plate 40
Moves upward, away from the chassis 1, and the recording disk 10 mounted on the disk table.
1, 102 is detached from the disk table and floated upward. The disc pressing plate 63 has a rear edge side formed by the lid body 6 by the end face cam portions 50 and 50.
, And each of the toggle springs 5
As shown by an arrow V in FIG. 3, the rotary blade 5 and 55 cause the rear edge side to be rotationally urged away from the lid 68.
The disc pressing plate 63 is used for the recording disc 101,
102 is pressed and supported against the disk lift plate 40.

When the cover 68 is further rotated in the cover opening direction as shown by an arrow D in FIG. 3 and is opened as shown in FIG. 2, the recording disks 101 and 102 are opened.
Is mounted on the disk lift plate 40, and the disk pressing plate 40 is mounted on the recording disks 101, 10
By separating the disk drive from the disk drive, the disk drive can be taken out as shown by an arrow B in FIG.

In the disk drive according to the present invention, the cam mechanism includes the end cams 50, 50, the copying pins 64,
The structure is not limited to the structure including the end springs 64 and the toggle springs 55, 55. As illustrated in FIG. It may be a thing. The torsion coil spring 73 is mounted by winding a coil around a support shaft 65 that supports the disk pressing plate 63, and makes each arm contact the lid 68 and the disk pressing plate 63. As shown by an arrow X in FIG. 11, the disk pressing plate 63 is rotationally biased in a direction in which the copying pins 64, 64 are pressed against the end cams 50, 50.

In such a cam mechanism, when the link arms 47 are rotated with respect to the lid 68, the disc pressing plate 63 always causes the copying pins 64, 64 to move. The rotation angle position at which the end surface cam portions 50 are brought into contact with each other. That is, the disk pressing plate 63 is rotated with respect to the lid 68 in conjunction with the opening and closing operation of the lid 68, similarly to the disk pressing plate 63 in the above-described embodiment. Then, this disk pressing plate 63
When the lid 68 is closed, the recording disks 101 and 102 are pressed to be mounted on the disk table, and when the lid 68 is closed,
The recording disks 101 and 102 are separated from each other.

Further, in the disk drive device according to the present invention, the cam mechanism is not limited to the one shown in each of the above-described embodiments, but may be attached to each of the link arms 47, 47 as shown in FIG. A pair of formed groove cams 74, 74
And each of the copying pins 64, 64 described above.

The pair of groove cams 74, 74 have the copying pins 64, 64 correspondingly inserted therethrough. According to the rotational angle positions of the link arms 47, 47 with respect to the lid 68, The disk pressing plate 63 has such a shape that the rotational angle position with respect to the lid 68 is uniquely determined. That is, like the disc pressing plate 63 in each of the above-described embodiments, the disc pressing plate 63 is rotated with respect to the lid 68 in conjunction with the opening and closing operation of the lid 68. I have. Then, this disk pressing plate 6
When the lid 68 is closed, the recording disks 101 and 102 are pressed to be mounted on the disk table, and when the lid 68 is closed, the recording disks 101 and 102 are closed. Separate more.

The disk drive device according to the present invention, as shown in each of the above-described embodiments, has the above-mentioned spherical body 19,1.
The present invention is not limited to the configuration including the disk table having the fitting protrusions 18 with the built-in parts 9 and 19, but can be rotatably mounted on the disk table with the magnet 84 and the lid 68 as shown in FIG. It may be configured to have the chucking plate 77 supported.

The disk table in this disk drive device includes a table section 80 attached to the drive shaft 71 of the spindle motor 70, a centering member 82 supported by the table section 80, and a table section 80.
And a magnet 84 built therein. The table portion 80 is formed as a substantially disk-shaped member, has a mounting hole 73 into which the drive shaft 71 is fitted on the lower surface side of the center portion, and has a flange-shaped disk mounting portion on the upper surface side. A part 81 is provided. The centering member 8
2 is formed in a substantially annular shape, and is supported by the table 80 so as to be movable in the axial direction of the drive shaft 71. The centering member 82 has an upper portion whose outer peripheral surface has a substantially conical shape projecting upward from the disc mounting portion 81. The centering member 82 is urged upward, that is, toward the distal end of the drive shaft 71 by a compression coil spring 83 interposed between the centering member 82 and the table portion 80. . The magnet 84 is formed in a substantially disk shape, and is built in the upper end side of the table section 80.
It faces the upper side.

The chucking plate 77 includes a shaft portion, a flange portion 78 provided above the shaft portion,
A chucking plate portion 79 having a substantially disk shape is provided below the shaft portion. The chucking plate 77 rotatably supports the flange portion 78 by a support member 75 attached to the lower surface of the lid 68, and suspends the chucking plate 79 on the lower surface of the lid 68. Let me. The chucking plate portion 79 is formed of a material that is attracted by a magnet, such as iron or stainless steel. The support member 75 is a substantially disk-shaped member, and its peripheral edge is attached to the lower surface of the lid 68, and the shaft of the chucking plate 77 is inserted through a through hole 76 at the center. .

In a disk drive having such a disk table and chucking plate 77, it is not necessary to provide the disk pressing plate 63. Therefore, the end cams 50 and the toggle springs 55 are not provided.

In this disk drive, the large-diameter or small-diameter recording disks 101, 102 placed on the disk lift plate 40 and positioned by the positioning arms 30, 34 have the lid 68 closed. When the state is established, the centering member 82 is inserted into the chucking hole 103 to be centered, and the magnet 84 shown by an arrow R in FIG.
It is held between the disc mounting portion 81 and the chucking plate portion 79. At this time, the shaft of the chucking plate 77 and the flange 78 are connected to the lid 6.
It is rotatable without contacting the support member 8 and the support member 75. The disk lift plate 40
After the recording disks 101 and 102 are mounted on the disk mounting portion 81, they move toward the chassis 1 and separate from the recording disks 101 and 102.

In this state, the spindle motor 70 is driven by the large-diameter or small-diameter recording disks 101 and 10.
2 can be rotated. The optical pickup device 13 is provided with the spindle motor 7.
Recording disks 101 and 102 rotated by 0
, Writing and / or reading of an information signal can be performed.

In this disk drive device, when the lid 68 is opened, the recording disks 101 and 102 mounted on the disk mounting portion 81 move the disk lift plate 40 upward. As a result, it is placed on the disk lift plate 40 and floats upward.

[0068]

As described above, in the disk drive device according to the present invention, the disk drive device is rotatably supported by the chassis and pivots on the lower surface side of the lid that can be moved toward and away from the upper surface of the chassis. The pivot angle of the disc pressing member, which is movably supported and disposed opposite to the disc table disposed on the chassis, with respect to the lid is defined according to the pivot angle of the lid with respect to the chassis. The cam mechanism holds the disc pressing member at a pivoting position protruding below the lid when the lid is in an open state in which the lid is separated from the chassis, and the lid approaches the chassis. When the recording disk is rotated in the direction, the disk pressing member is rotated to the lid side while the central portion of the recording disk is pressed downward, and the disk table is inserted into the chucking hole of the recording disk. The recording disk is mounted on the disk table by pressing support means, and when the lid is closed, the disk pressing member is placed at a position close to the lid. By holding, the disk pressing member is separated from the recording disk mounted on the disk table.

Therefore, in the disk drive device according to the present invention, the cam mechanism mounts the recording disk on the disk table in conjunction with the closing operation of the lid, and mounts the recording disk on the disk table. The recorded recording disk is made rotatable.

Also, in the disk drive device according to the present invention, the recording disk is mounted on the disk and is rotatably supported by the lid and interposed between the chassis and the disk pressing member. The link mechanism that defines the rotation angle of the disc lift plate with respect to the lid in accordance with the rotation angle of the lid with respect to the chassis is such that when the lid is in the open state in which the lid is separated from the chassis, By holding the lift plate parallel to the chassis at a position more distant from the chassis than the upper end of the fitting projection, the recording disk placed on the disk lift plate is separated from the disk table. When the lid is rotated in the direction approaching the chassis, the disc lift plate is held on the chassis while maintaining the state parallel to the chassis. By bringing the recording disk closer, the fitting projection of the disk table fits into the chucking hole of the recording disk, thereby enabling the recording disk to be mounted on the disk table. When this is done, the disk lift plate is moved closer to the chassis to separate the disk lift plate from the recording disk mounted on the disk table.

Therefore, in the disk drive device according to the present invention, the link mechanism enables the recording disk to be mounted on the disk table in conjunction with the closing operation of the lid, and Whether the recording disk mounted on the disk table is rotatable,
The recording disk is removed from the disk table in conjunction with the opening operation of the lid.

That is, in the disk drive device according to the present invention, if the cover is opened to such an angle that the recording disk can be inserted between the cover and the disk lift plate, the recording is performed. A disk can be attached to and detached from the disk table.

Then, in this disk drive,
When the recording disk is mounted on the disk table, the recording disk is not directly pressed by a finger or the like, so that there is no possibility that the recording disk is damaged or stained.

In each of the disk drive devices according to the present invention, a pair of positioning members movably disposed on the chassis, and the positions of the positioning members engaged with the pair of positioning members are changed to the disk table. A connection lever that is symmetrical with respect to one plane including the central axis of the recording head, wherein each of the positioning members has a recording disk having a diameter smaller than the diameter corresponding to the disk lift plate mounted on the disk lift plate. When the recording disk is moved in a direction approaching the disk table and abuts two locations on the outer peripheral edge of the small-diameter recording disk so that the chucking hole of the recording disk and the disk table are concentric. In addition, accurate positioning of the small-diameter recording disk with respect to the disk table becomes possible. Attachment to interlocked with the opening and closing operation of the lid of the recording disk said disk table is made possible.

That is, the present invention relates to a disk drive device having a lid, which has good portability by reducing the opening angle of the lid required for replacing a recording disk. It is another object of the present invention to provide a disk drive capable of preventing the recording disk from being damaged or stained when the recording disk is replaced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a configuration of a main part of a disk drive device according to the present invention.

FIG. 2 is a side view showing a configuration of a main part of the disk drive device in a cover opened state.

FIG. 3 is a side view showing a configuration of a main part of the disk drive device in a state during a cover opening operation or a cover closing operation.

FIG. 4 is a side view showing a configuration of a main part of the disk drive device in a lid closed state.

FIG. 5 is a main part plan view showing a state where a large-diameter recording disk is mounted in the disk drive device.

FIG. 6 is a main part plan view showing a state where a small-diameter recording disk is mounted in the disk drive device.

FIG. 7 is an enlarged perspective view showing the shape of a disk pressing plate constituting the disk drive.

FIG. 8 is an enlarged perspective view showing a shape of a disk table constituting the disk drive device.

FIG. 9 is a longitudinal sectional view showing a configuration of the disk table shown in FIG. 8;

FIG. 10 is a longitudinal sectional view showing another example of the shape of the disk table constituting the disk drive device.

FIG. 11 is a side view showing another example of the configuration of the link mechanism and the cam mechanism constituting the disk drive device.

FIG. 12 is a side view showing still another example of the configuration of the link mechanism and the cam mechanism constituting the disk drive device.

FIG. 13 is a perspective view showing the shape of a large-diameter recording disk that can be mounted on the disk drive.

FIG. 14 is a perspective view showing the shape of a small-diameter recording disk that can be mounted on the disk drive.

FIG. 15 is a perspective view showing a configuration of a conventional disk drive.

[Explanation of symbols]

1 chassis, 12 table part, 18 fitting protrusion,
22 connecting lever, 30, 34 pair of positioning arms, 40 disc lift plate, 47 link arm, 5
0 end face cam part, 63 disk pressing plate, 64 copying pins, 68 lid, 70 spindle motor, 79 chucking plate, 84 magnet, 101 large diameter recording disk, 102 small diameter recording disk, 103 chucking hole

Claims (3)

(57) [Claims] 1. A chassis, a table portion provided on the chassis, on which a peripheral portion of a chucking hole at a center portion of a recording disk is mounted, and a table provided on the table portion and fitted in the chucking hole. And the inner wall of the chucking hole
Holding the recording disk by pressing and supporting
Has a fitting protrusion which have a pressing support unit, a disc table rotationally operated by the spindle motor, the one end vicinity of the chassis are supported one end side rotatably, the upper surface of the chassis A lid that can be moved toward and away from the unit, a disk pressing member rotatably supported by the lid on the lower surface side of the lid and disposed opposite to the disk table; A cam mechanism for defining a rotation angle of the disc pressing member with respect to the lid in accordance with a rotation angle of the lid with respect to the chassis; and a cam which is rotatably supported at one end by the lid. A disk lift plate interposed between the chassis and the disk pressing member, and a disk lift plate on which the recording disk is placed; and a disk lift plate of the disk lift plate according to a rotation angle of the lid with respect to the chassis. A link mechanism for defining a rotation angle with respect to the lid, wherein the cam mechanism and the link mechanism move the disc pressing member below the lid when the lid is in an open state separated from the chassis. By holding the disc lift plate parallel to the chassis at a position further away from the chassis than the upper end of the fitting projection, the disc lift plate is held at a pivot position protruding to the side. the placed recording disk above is separated from the disc table, when said lid member is rotated in a direction coming close to the chassis, it is placed on the disc lift plate on to the disc pressing member While pressing the center portion of the recording disk downward, the disk pressing member is rotated toward the lid, and the disk lift plate is By approaching the chassis while maintaining the parallel state, the chucking hole of the recording disk by fitting the engagement projection of the disc table, by the pressing and supporting means,
The recording disc is mounted on the disc table, when said lid is made and closed state, holds the position near the disc pressing member to said top, to close the disc lift plate to the chassis it allows the disc drive device, characterized in that for separating the disc pressing member and the disc lifting plate from a recording disk mounted on the disk table. 2. A pair of positioning members movably disposed on a chassis; and a pair of positioning members engaged with the pair of positioning members, and the positions of these positioning members are symmetrical with respect to one plane including the center axis of the disk table. A connection lever that is located at a position where the recording member has a smaller diameter than the diameter corresponding to the disk lift plate, and when the recording disk is placed on the disk lift plate, the positioning member moves in a direction approaching the disk table. 2. The disk drive device according to claim 1, wherein the disk drive is moved and abuts two locations on the outer peripheral edge of the small-diameter recording disk so that the chucking hole of the recording disk and the disk table are concentric. 3. The link mechanism according to claim 1 , wherein one end of the link mechanism is the shear.
If the other end is rotatably supported by the lid,
In both cases, a support provided between the one end and the other end is provided.
The holding part supports the disc lift plate,
With the rotation of the cover, the disk lift plate is
It is possible to move in a state substantially parallel to the
The cam mechanism is formed between the one end and the other end.
2. The disk drive according to claim 1, wherein: