JP2000215569A - Medium loading means and disk drive device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medium-loading method, medium-loading means and disk drive device, which are suitable for thinning and capable of loading, fixing are releasing a disk. SOLUTION: A releasing/fixing means 40 is constituted, in such a manner that a clamping member 41 is formed to the nearly crescent shape by arranging the fixed part 43 and a releasing part 45 at the opposite sides each other across a turning center hole 42, and the plural clamping members 41 are arranged radially on a turntable means 10, to be pivotally fixed thereon and freely turnable. The disk is loaded and fixed to the turntable means 10 with centering by causing the clamp member 41 to turn, and further the disk is releasing and allowed to be lifted up on the turntable means 10. Consequently, the disk is loaded, fixed and operated for releasing by only transferring it to a prescribed position, and a thin and easily operable disk drive device is obtained.

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 reproducing a signal by rotating a disk recording medium.
The present invention relates to a medium mounting method, a medium mounting means, and a disk drive capable of detachably mounting a disk.

More specifically, the present invention relates to a mechanism for holding a disk recording medium on a turntable attached to a rotating means (specifically, a spindle motor) when the disk recording medium is driven to rotate. Here, the disc recording medium refers to a concentric disc-shaped medium having a center hole, and examples thereof include an old EP record disc,
MO, PD, CD, CD-ROM, CD-R, CD-R
Recording media such as W, DVD-ROM, and DVD-RAM are included. These are generically referred to simply as a disc.

[0003]

2. Description of the Related Art A conventional disk mounting method will be described. Mounting a disk requires at least two stages, a mounting process of aligning the center hole of the disk with the center of the mounting device, and a fixing process of fixing the disk to rotating means thereafter. As the method of mounting and fixing, there are the following three types as conventionally employed. First, the operator wears and fixes it himself. For example, as disclosed in Japanese Patent Application Laid-Open No. 9-147479, there is a disk self-holding (clamp method) in which a user himself owns a disk and directly mounts the disk on a turntable which is a component of an optical pickup.

[0004] Second, it is mounted by a transport mechanism and fixed by a vertically sandwiching mechanism. For example, as disclosed in JP-A-6-84255, a loading mechanism transports a disk to a turntable and places it on a center hub. This mechanism fixes the disk to the turntable by magnetic force. There are cases where a holder for accommodating a cartridge is used for transport and cases where a tray for mounting a disk is used.

[0005] Third, the mounting mechanism is moved up and down while being transferred by the transfer mechanism to fix the mounting. For example, JP-A-9
As disclosed in US Pat. No. 2,454,411, the transport mechanism itself moves in the direction perpendicular to the transport and is mounted on the playback device.

Each of the above mounting methods requires a vertical moving mechanism for moving the clamper and the transport mechanism in the direction perpendicular to the disk transport direction, and requires a complicated moving mechanism and its moving space. Further, in order for the operator to attach the rotating means to the rotating means, it is necessary to move the rotating means to a position where it can be easily operated, which also requires a moving mechanism and a moving space.

[0007]

However, computer devices are becoming smaller and lighter, and disk devices used as external storage devices of computer devices are also required to be smaller, lighter and thinner. For this reason, the drawer moving mechanism and the up-and-down moving mechanism are obstacles to thinning, and there is a limit to thinning. Also, in order to provide more comfortable computer operability, a disk drive that does not require a mounting operation by an operator has been required.

The present invention relates to a disk drive device having a structure suitable for reduction in size and weight and thickness, which eliminates the need for a drawer moving mechanism and a vertical moving mechanism, makes the entire apparatus thinner, and automatically mounts and automatically mounts disks. It is an object of the present invention to provide a medium mounting method, a medium mounting means, and a disk drive capable of fixing and automatic opening.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a rotating table means having a projecting portion which fits into a center hole provided in a disk-shaped medium; A fixed opening means having a center hole and a fixed part and an opening part provided on the opposite side to each other with the rotation center hole therebetween, and formed in a substantially crescent shape, and radially around the protruding part of the turntable means. The rotating means for rotatably supporting the fixed opening means is rotatably supported, and the rotating means for rotating the fixed opening means is housed in the turntable means, and the fixed opening means is rotated in a predetermined direction to move the disk-shaped medium to the turntable means. A medium mounting means characterized in that the disk-shaped medium is released from the turntable means by mounting, fixing, and rotating in another predetermined direction, and the medium mounting means and the disk-shaped medium are moved in the direction of the disk surface. A disk drive device having a transport unit for transporting.

[0010] By rotating the fixing / opening means constructed as described above, the mounting process and the fixing process are completed simultaneously at the same time. Further, the disk-shaped medium is released from the turntable means by being rotated in another direction. Therefore, the disk conveyed to the vicinity of the turntable is mounted on the turntable while being centered, and is continuously fixed.
Further, the fixed disk can be released and returned to the transport position. As a result, the drawer moving mechanism and the vertical moving mechanism are not required, and the device can be made thinner and smaller. Also,
The operator does not need to wear, fix, and open the disk drive, and a disk drive device having more comfortable operability can be obtained.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to the first to fourth aspects of the present invention is directed to a rotating table means having a projecting portion which fits into a center hole provided in a disc-shaped medium; Fixed-opening means having a fixed part and an open part opposite to each other with respect to the rotation center hole and formed in a substantially crescent shape, and fixedly opened and released radially around the protruding part of the turntable means. The rotatable means for rotatably supporting the fixed opening means is housed in the turntable means, the fixed open means is turned in a predetermined direction, and the disc-shaped medium is mounted on the turntable means, A medium mounting method and a medium mounting means characterized in that the disk medium is released from the turntable means and returned to the transport position by being fixed and rotated in another predetermined direction.

By rotating the fixing and releasing means, mounting and fixing of the disk can be completed simultaneously at a time. By rotating the disk in another direction, the disk is released and returned to the transport position.

[0013] The invention according to claim 5 of the present invention is characterized in that when the disk-shaped medium is released from the turntable means by rotating the fixed release means, the fixed part is housed in the turntable means. The medium mounting means has a function of preventing the disk from being disturbed after being opened.

According to a sixth aspect of the present invention, there is provided a transporting means for transporting a disk-shaped medium in the direction of the disk surface, and a medium mounting means according to the second aspect. In particular, the medium mounting means has a cross-sectional thickness of a surface including an axis of the rotation center of the turntable means of 11.5 mm or less. .

According to another aspect of the present invention, there is provided a semiconductor device having a function as described in any one of the first to fifth aspects and a thin structure having a thickness of 11.5 mm or less.

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a disk device according to a first embodiment of the present invention, and shows a plan view of a turntable. FIG. 2 is a sectional view taken along line XX of FIG. 1 and 2, the turntable means 10 has a turntable 11 on which the disk 1 is mounted and a center hub 12 which fits into a center hole of the disk. The turntable 11 is machined from free-cutting steel (surface plating) with an accuracy of roundness of about 10 microns using an NC lathe or the like, and is rotated by a spindle motor (rotating means) 20.
A center hub 12 protrudes from the center of the turntable 11, and the protruding surface is formed as a tapered slope. The center hub 12 fits into a center hole 2 formed in the center of the disk 1, and can align the disk 1 with the central axis of the shaft 21. The amount of protrusion of the center hub 12 is limited to a value equal to or less than the thickness of the disk 1 when the disk 1 is mounted on the turntable 11. A clamper hole 13 in which a clamp member 41 described later protrudes and is accommodated is radially opened in the center hub 12. Numeral 14 denotes a slip sheet, which is provided to increase sliding friction so that the disk 1 follows acceleration and deceleration of the turntable 11. The turntable means 10 is fitted on a shaft 21 of a spindle motor 20. The line XX in the figure is a virtual rotational cross-section line provided for detailing the internal structure.

Reference numeral 20 denotes a spindle motor as a rotating means. Reference numeral 21 denotes a shaft, which is made of a material (for example, stainless steel (SUS420J2) or the like) having high hardness and high surface accuracy for high-speed rotation. A bearing 22 is arranged on the outer periphery of the shaft 21. Shaft 21
Is rotatably supported by a bearing 22 with a clearance of several microns. Generally, sintered metal or the like is used for the bearing 22 in consideration of cost, and when performance is particularly required, a ball (bearing) may be used. The thrust bearing 23 receives the thrust load of the shaft 21. The thrust bearing 23 is made of a high-strength metal or resin having good slidability, such as high-strength resin PPS.

A bearing housing 2 is provided on the outer periphery of the bearing 22.
4 are arranged. The bearing 22 is provided in the bearing housing 2.
4 and the thrust bearing 23 is a bearing housing 24
Attached to. The bearing housing 24 generally has a B
Although sBM (Shinchu) is used, a ferromagnetic metal in general, for example, free-cutting steel may be used. Further, the bearing housing 24 is fixed to the base 15. Base 15
Uses a magnetic material such as SECE.

The spindle motor 20 has a structure of a surface-facing DC brushless motor. A rotor magnet 26 is attached to the outer periphery of the turntable 11. The rotor magnet 26 is divided into a plurality (for example, 8 or 12) of N / S poles with a thickness of about 0.5 to 2 mm. The substrate 27 is arranged at a predetermined distance from the rotor magnet 26. A plurality of printed coils laminated by etching are formed on the substrate 27, and function as armature coils (stator coils). This substrate 27 is about 1 mm in order to realize a thin motor.
It has the following thickness. Further, a lower rotor 28 is arranged at a predetermined distance from the substrate 27. The lower rotor 28 is made of a ferromagnetic material, forms a rotor yoke, and generates an electromagnetic driving force for the spindle motor 20 with the rotor magnet 26 sandwiching the armature coil of the substrate 27. As described above, the turntable 11 is integrated with the rotor magnet 26 constituting a magnetic circuit as a motor, so that the device is made thinner and the number of parts is reduced.

Further, the reciprocating means 30, which is a driving mechanism for rotating a clamp member 41 described later, will be described. In the first embodiment, a voice coil motor (VCM) used for a linear motor or the like is used as the reciprocating means. In FIG. 2, a slider 31 slides on the outer peripheral surface of the bearing housing 24 in the axial direction of the shaft 21. The material is made of an insulating material such as aluminum which is lightweight and rigid and can accommodate the coil bobbin. 32 is a slider spring. The slider spring 32 is bridged between the bearing housing 24 and the slider 31, and urges the slider 31 in the axial direction of the shaft 21. The slider spring 32 is a compression coil spring wound in a conical shape. When the slider spring 32 is compressed most (refer to FIG. 2), the bottom position of the slider 31 is not hindered by the accumulated length of the coil wire diameter. Further, a flange 37 is arranged on the end surface of the slider 31 on the turntable 11 side. If there is no problem in processing and assembly, the slider 31 may be integrally formed. The outer peripheral portion of the flange 37 comes into contact with the clamp member 41 and gives a torque for rotating the clamp member 41.

Reference numeral 33 denotes a stopper, which regulates the rising position of the slider 31 and, when the disk 1 is fixed, the flange 37 is used to clamp the clamp member 41 or the center hub 12.
Prevents contact with Numeral 34 denotes a linear magnet, which is formed of a ferromagnetic material in a cylindrical shape, and the outer circumferences of the coil 35 and the slider 31 are arranged coaxially with the shaft 21. The magnetic poles of the linear magnet 34 are magnetized on a plane perpendicular to the axis center line of the shaft 21 (that is, in the radial direction of the spindle motor 20). Reference numeral 36 denotes a back yoke, which has a function of efficiently generating a magnetic flux between the bearing housing 24 and the linear magnet 34. With the above-described configuration, when the coil 19 is energized, the coil current crosses the magnetic flux, so that the slider 31 moves up and down on the outer peripheral surface of the bearing housing 24, and the flange 37 applies a rotating torque to the clamp member 41. The first embodiment of the present invention described above constitutes a moving coil type since the slider 31 moves with the coil 35.

Next, the fixing and releasing means 40 including the clamp member 41 will be described. FIG. 3 is an enlarged view of a main part of FIG. 2 and 3, a rotation shaft 15 is provided inside the back surface of each clamper hole 13 of the turntable 11, and a rotation center hole 42 of the clamp member 41 is rotatably supported. The clamp member 41 has a function of locking the disk 1 by locking to the edge of the center hole 2 of the disk 1, and has a fixing portion 43 locking to the edge of the center hole 2. Further, in combination with the center hub 12, a projection 44 is provided to align the center of the disk 1. Further, the disk 1 has a function of opening the disk 1 from the center hub 12 and lifting the disk surface to a position where the disk surface goes over the upper surface of the center hub 12 (a disk moving position described later), and an opening 45 is formed. Since the clamp member 41 rotates to perform the fixing / opening operation of the disk 1, the fixing portion 43 and the opening portion 45 are formed on opposite sides of the rotation center hole 42. Therefore, the clamp member 41
Are formed almost in a crescent shape.

Further, the clamp member 41 is connected to the flange 37.
, And the rotating operation is started by the flange 37. A contact surface 46 is formed in the contact portion, and the turning operation is started efficiently. Further, a cam surface portion 47 is formed so that the rotation operation is continued regardless of the thrust of the slider 31 after the rotation operation is started, and the cam surface portion 47 is pressed by the pressing plate 48 in the axial direction of the shaft 21. Be inspired.
Further, the pressing plate 48 is formed as an annular flat plate, and is reciprocally mounted around the inner peripheral portion of the back surface of the turntable 11. The pressing plate 48 comes into contact with the cam surface portion 47, and the pressing plate 4 generates a rotating torque according to the contact angle with the cam surface by the pressing urging force.
The contact surface of the cam 8 with the cam surface 47 is a flat surface 48a and a slope 4
8b. The pressing plate 48 is pressed and urged in the direction of arrow A by a clamp spring 49 which is a compression coil spring. The clamp spring 29 is the pressing plate 4
8 and the back surface of the turntable 11.
As illustrated in FIG. 1 described above, three clamp members 41 are arranged on the turntable 11 concentrically with the shaft 21 at equal intervals. This is because the center of the center hole 2 can be determined by three pieces. Of course, the number is not limited to three, but is appropriately designed depending on the diameter of the center hole 2 and the pressing and fixing force, such as four or six.

Next, the activation and continuation of the above-described rotation operation will be described in detail. 4A and 4B are views showing a process from the start to the continuation of the rotation operation in the fixed direction. FIG. 4A shows the moment when the start is started and the vehicle passes through the rotation dead center 47a, and FIG. Each state represents a state in which the moving operation continues and moves toward the fixed position. 5A and 5B are diagrams showing a process from the start to the continuation of the turning operation in the opening direction. FIG. 5A shows the moment when the starting operation starts and passes the turning dead center 47a, and FIG. The state in which the moving operation continues and goes to the open position is shown.

First, FIG. 4 (a) shows a state of activation in the fixed direction.
It will be described based on. The flange 37 starts moving in the direction of arrow A. The contact surface 46 is pushed by the flange 37, and the clamp member 41 starts rotating in the direction of arrow B. The flange 37 continues to move in the direction of the arrow B, and finally reaches the pivot dead center 47a.
Passes through the plane portion 48a while rotating. Here, the cam surface portion 47 of the clamp member 41 depends on its rotation angle and the pressing plate 48.
(The action line extending from the contact point between the cam surface portion 47 and the pressing plate 48 in the biasing direction of the pressing plate 48 means the contact point passing through the turning center hole 42). When the clamp member 41 is pressed by the pressing plate 48 beyond the rotation dead center 47a, it rotates in the direction of arrow B. Figure 4 at the next moment
The state shifts to the state shown in FIG. 7B, where the cam surface portion 47 is further pushed in the direction A by the slope portion 48b. At this time, the contact point with the pressing plate 48 generates a torque for rotating the clamp member 41 in the B direction through the rotation dead center 47a. As a result, the clamping member 41 can no longer use the thrust of the flange 37 and
8 continues to rotate in the direction of arrow B due to the urging force of
3 guides the center hole 2 of the disk 1 in the direction C (toward the fixed position).

Next, the state of activation in the opening direction will be described with reference to FIG. The flange 37 starts moving in the direction of arrow D. The contact surface 46 is pushed by the flange 37, and the clamp member 41 starts rotating in the direction of arrow E. Flange 3
7 continues to move in the direction of arrow D, and finally the rotating dead center 47a passes while rotating on the plane portion 48a. At this time, the rotation dead center 47a performs the same operation except that the rotation direction is different from the above-described fixed direction. At the next moment, the state moves to the state shown in FIG. 5B, and the cam surface portion 47 is further pushed in the opposite direction (A direction) of the arrow D by the flat surface portion 48a. At this time, the pressing plate 4
8 passes through the rotation dead center 47a and passes through the clamp member 4
A torque is generated to rotate 1 in the E direction. As a result, the clamp member 41 continues to rotate in the direction of arrow E by the urging force of the pressing plate 48 without using the thrust of the flange 37 anymore.
The opening 45 lifts the disk 1 in the F direction (opening direction). Further rotation in the direction E causes the fixing portion 43 to rotate away from the center hole 2 and to be stored in the center hub 12, and the opening portion 45 protrudes to the surface of the center hub 12, so that the disk surface is centered. The hub 12 can be lifted to a position where it can get over the upper surface.

In the fixing operation described above, since the contact point between the cam surface portion 47 and the inclined surface portion 48b is on the inner peripheral side with respect to the rotation center hole 42, it is always fixed by the urging means including the pressing plate 48 and the clamp spring 49. It is urged to rotate in the direction (B direction). In the opening operation, since the contact point between the cam surface portion 47 and the flat surface portion 48a is located on the outer peripheral side of the rotation center hole 42, the urging means including the pressing plate 48 and the clamp spring 49 always causes the opening direction (E direction). ). That is, the urging means including the pressing plate 48 and the clamp spring 49 assists the function of the flange 37 rotating the clamp member 41 and assists the function of the clamp member 41 of maintaining the fixed position and the open position.

Therefore, the clamp member 41 can maintain the fixed position and the open position even when some disturbance such as vibration occurs. In addition, the following notable effects are produced. That is, the slider 31 only needs to apply a push-up force or a push-down force to the clamp member 41 for a period during which the slider 31 passes through the rotation dead center 47 a provided on the cam surface portion 47 of the clamp member 41. I just need. Therefore, the slider 3 is used only for the period necessary for the trigger.
1 only needs to be energized, and significant energy savings can be achieved.

The first embodiment has been described using an example in which a voice coil motor is used as the reciprocating means and the voice coil motor is incorporated in the spindle motor. However, rotating the fixed opening means is not limited to the reciprocating means illustrated. For example, a cylindrical solenoid may be incorporated in the spindle motor instead of the voice coil motor, or a micro solenoid may be incorporated in the center hub.
Further, a magnet and a coil may be incorporated in the fixing / opening means and the clamper hole to directly rotate the fixing / opening means. The present invention exemplifies a reciprocating means as an embodiment for rotating the fixing and releasing means, and the reciprocating means and the above-mentioned alternative means may be collectively referred to as a rotating means. is there. Since these alternative means are not the subject of the present invention, the description of the alternative means is omitted.

(Embodiment 2) Next, the operation of the disk drive device using the fixing and releasing means 40 configured as described above will be described. FIG. 6 is a diagram showing a standby state of the disk drive device using the fixing and releasing means 40 of FIG. The disk 1 is transported to the turntable 10 by a transporting unit (not shown). At this time, the fixing and releasing means 40 is in a standby state, and the clamp member 41 is housed inside the center hub 12. As shown in the partial view of the clamp member 41 in FIG. 6, in order to eliminate as much resistance and obstruction as possible with respect to the entry of the disk 1, the outer peripheral portion of the open portion 45 is formed as a gentle inclined surface. 45a.

The transporting means (not shown) transports the disk 1 from the handling position of the operator to the turntable means 10, for example, a belt, a roller, a transporting means on a guide, or the like. In order to take advantage of the features of the present invention, it is not necessary to convey in the direction perpendicular to the disk surface as exemplified in the prior art, and if it is conveyed in the same direction as the disk surface, the function is fully satisfied I do.

When the transport operation is completed, the disk 1 is transported to the position shown in FIG. FIG. 7 is a diagram illustrating a state in which the fixing operation is started. In FIG. 7, the center hole 2 substantially coincides with the center hub 12. Thereafter, the fixing operation is completed through the states shown in FIGS. 4A and 4B, and reaches the fixing position.

FIG. 8 is a diagram showing a fixing operation when the center of the disk 1 is out of alignment. In FIG. 8, the solid-line disk 1 is placed on the turntable 11 with a center shifted from the disk whose center represented by the dotted line coincides with the center. However, in the process of moving from FIG. 7 to FIG. 8, the fixing and releasing means 40 according to the second embodiment of the present invention draws a dotted line G of an arc centering on the turning center hole 42 as the turning trajectory of the fixing portion 43. Therefore, as long as one of the left and right center holes 2 in the drawing exists in the inner peripheral portion of the rotation locus G,
Since the fixing portion 43 rotates by capturing the center hole 2, the disc 1 is centered and mounted on the center hub 12,
And it is fixed continuously.

FIG. 9 shows a disc 1 using a clamp member 41.
FIG. 6 is a diagram illustrating a state in which fixing is completed. As described with reference to FIG. 4B, the urging means including the pressing plate 48 and the clamp spring 49 assists the function of the clamp member 41 to maintain the fixed position. Therefore, the clamp member 41 can maintain the fixed position even when some disturbance such as vibration occurs. In addition, as shown in the partial enlarged view of the clamp member 41, a protrusion 44 may be formed on a flat portion following the fixing portion 43 of the clamp member 41. In this case, the rotating torque of the fixed portion 43 is divided into a force for pressing the disk 1 against the turntable 11 and a force for pushing the disk 1 to the outer peripheral side to center the disk 1, whereas the protrusion 44 is directly connected to the center hole. 2
Is generated, and the disc 1 can be more effectively centered.

Next, the opening operation will be described. Opening operation is shown in FIG.
5 (a) and 5 (b) described above.
Through the states shown in (1) and (2), the opening operation is completed and the operation reaches the opening position. FIG. 10 is a diagram illustrating a state in which the opening operation has been completed.
The position of the clamp member 41 is not different from that of FIG. The disc 1 is simply released from the center hub 12, lifted up on the surface of the center hub 12 by the opening 45, and stands by at the transport position. That is, it waits for it to be carried away by the aforementioned transporting means. FIG.
As described in (b), the fixing portion 43 is the center hub 1.
Since the disc 1 is accommodated in the center 2, the disc 1 lifted on the surface of the center hub 12 is not obstructed. Furthermore, the urging means including the pressing plate 48 and the clamp spring 49 assists the function of the clamp member 41 to maintain the open position. Therefore, the clamp member 41 can maintain the open position even when disturbance such as slight vibration occurs, and the clamp member 41 remains housed in the center hub 12, so that the conveyance of the disk 1 is not hindered. .

Referring again to FIG. 9, reference numeral 4 denotes a jacket. In the above description, all the disks 1 have been described as single disks. However, there is an example in which the medium is stored in the jacket 4 for the purpose of protecting the medium, as represented by the MD and the PD. In these media, an opening is provided by hollowing out the jacket 4 at the center hole of the medium, and the jacket 4 is formed so that the disk 1 inside can be fixed. On the other hand, since the clamp member 41 of the present invention is arranged in substantially the same outer shape as the outer shape of the center hub 12, the disk can be easily mounted, fixed, and released from the opening of the jacket 4.

Further, according to the present invention, since a vertical moving mechanism of the disk and a front / back sandwiching mechanism are not required, the apparatus can be made thin. In FIG. 9, the turntable means 10,
The spindle motor 20, the reciprocating means 30, and the fixing and releasing means 40 are integrated concentrically and have a thickness t of 11.5 m.
m (see FIG. 9, the thickness from the outer shape of the base 25 to the tip of the clamp member 41 at the time of clamping), so that the entire thickness of the disk device including the transfer space of the disk 1 is 12.7 mm or less. Can be configured.
As a result, the disk device can be mounted on a notebook-type computer which is required to be small and thin, and a disk device highly convenient for the operator can be provided.

As described in detail above, according to the present invention, the opening and fixing means is formed in a substantially crescent shape by providing the fixing portion and the opening portion on opposite sides with respect to the center of rotation. The open fixing means is provided radially on the turntable means and is rotatably mounted on the shaft. By rotating the opening and fixing means, the disc can be centered on the turntable means, mounted and fixed, and the disc can be released and lifted above the turntable means.

Therefore, if the opening and fixing means of the present invention is utilized in the disk drive device, mounting, fixing and opening operations can be performed only by transporting the disk to a predetermined position. Therefore, there is no need to move the disk in the direction perpendicular to the disk surface or sandwich the disk from both front and rear surfaces, and it is possible to provide a disk device that is thin, has a small number of components, and is easy to handle for the operator.

[0040]

As described above, according to the present invention, the entire apparatus is made thinner without the need for a drawer moving mechanism or a vertical moving mechanism, and a medium mounting that enables automatic mounting, automatic fixing, and automatic opening of a disk. A method and a medium mounting means and a disk drive can be provided.

[Brief description of the drawings]

FIG. 1 is a plan view of a disk device according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is an enlarged view of a main part of FIG. 2;

FIG. 4 is a diagram showing a process from a start to a continuation of a rotation operation in a fixed direction.

FIG. 5 is a diagram showing a process from starting to continuation of a turning operation in an opening direction.

FIG. 6 is a diagram illustrating a standby state of the disk drive device using the fixing and releasing unit of FIG. 2;

FIG. 7 is a diagram illustrating a state in which a fixing operation is started.

FIG. 8 is a diagram illustrating a fixing operation when the center of the disk is out of alignment.

FIG. 9 is a diagram illustrating a state in which the fixing of the disk by the clamp member is completed.

FIG. 10 is a diagram illustrating a state in which an opening operation is completed.

[Explanation of symbols]

 Reference Signs List 1 disc 2 center hole 3 cartridge 4 jacket 10 turntable means 11 turntable 12 center hub 13 clamper hole 14 slip sheet 15 rotation shaft 20 spindle motor (rotation means) 21 shaft 22 bearing 23 thrust bearing 24 bearing housing 25 base 26 rotor Magnet 27 Substrate 28 Lower rotor 30 Reciprocating means 31 Slider 32 Slider spring 33 Stopper 34 Linear magnet 35 Coil 36 Back yoke 37 Flange 40 Fixing and releasing means 41 Clamp member 42 Rotation center hole 43 Fixed part 44 Projection part 45 Opening part 45a Opening Slope 46 Contact surface 47 Cam surface 47a Rotation dead center 48 Press plate 48a Flat 48b Slope 49 Clamp spring

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Fumikawa Furukawa 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 5D038 BA05 CA22 EA23

Claims (7)

[Claims] 1. A turntable means having a projection fitted into a center hole provided in a disc-shaped medium, and a rotation center hole radially disposed around the protrusion of the turntable means. A method of mounting a disc-shaped medium, comprising: a fixed opening and an opening formed opposite to each other with respect to the rotation center hole and fixed and opened in a substantially crescent shape, wherein the fixed opening is predetermined. A fixed rotating step in which the disc-shaped medium is mounted on and fixed to the turntable means by rotating in a given direction, and the disc-shaped medium is rotated by rotating the fixed opening means in another predetermined direction. Opening rotation step of releasing from the turntable means, and mounting the disc-shaped medium on the turntable means by the rotation operation of the fixed rotation means, fixing,
And mounting the medium. 2. A rotating table means having a projecting portion which fits into a center hole provided in a disk-shaped medium, and a rotating portion having a rotating center hole, and a fixed portion and an opening on opposite sides of the rotating center hole. And a fixing and releasing means formed in a substantially crescent shape by providing a rotatable support for the fixing and releasing means radially around a protruding portion of the turntable means, and rotating the fixing and releasing means. A medium mounting means, wherein a rotating means for driving is accommodated in the turntable means. 3. The medium mounting means according to claim 2, wherein said fixing and opening means is rotated in a predetermined direction to mount and fix a disk-shaped medium on said turntable means. 4. The medium mounting means according to claim 2, wherein said fixing and releasing means is rotated in another predetermined direction to release said disk-shaped medium from said rotating table means and return to the transport position. 5. When the disk-shaped medium is released from the rotary table means by rotating the fixed release means, the fixed portion is housed in the rotary table means.
Medium mounting means as described in the above. 6. A disk drive device comprising a transport means for transporting a disk-shaped medium in the direction of the disk surface, and the medium mounting means according to claim 2. 7. A disk drive according to claim 6, wherein said medium mounting means has a cross-sectional thickness of a surface including an axis of a rotation center of said rotary table means of 11.5 mm or less.