KR19980018976A - Disk Apparatus, Access and Shunting Methods to the Disk Type Recording Medium of the Head of Said Apparatus - Google Patents

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to provide a disk storage device capable of completely retracting a rotary motion actuator to the outside of a disk cartridge, ensuring reliable and stable operation, and enabling thinning of the entire device. In order to solve this problem, the magnetic head 8 of the present invention is completely retracted to the outside of the disc cartridge 16 except for read / write and the magnetic head 8 is inserted into the disc cartridge 16 only during read / write. Insert is moved.

Description

Disk apparatus, access method and evacuation method of disk-type recording medium of its head

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large capacity storage device used for an information processing device, and more particularly, to a disk storage device using a hard disk as a disk-type information recording medium capable of reading / writing both surfaces.

As a high speed mass capacity disk device represented by a removable hard disk device according to the present invention, a disk storage device 101 having the configuration shown in Figs. 32 and 34 is proposed, and a hard disk as a recording medium used therein is proposed. As the disc cartridge which accommodated the disc, the disc cartridge 120 of the structure shown in FIG. 34 is proposed.

As shown in FIG. 32, this disk storage device 101 rotates a disk provided in a disk cartridge loading section 103 having an insertion opening 103a on the front surface of the front half of the main chassis 102 as a main mechanical element. It consists of a drive mechanism 104 and a read / write head mechanism 105 arranged on the rear half side of the main chassis 102.

The disk rotation drive mechanism 104 is configured such that the spindle motor 108 including the chucking magnets 107 emerges from the opening 106 formed in the central portion of the bottom surface of the disk cartridge loading portion 103 in a range of a predetermined height. And a sub chassis (not shown) arranged under the main chassis 102 so as to be lifted and lowered.

In addition, the read / write head mechanism 105 is positioned near the disc cartridge loading portion 103 on the rear half side of the main chassis 102 for the purpose of miniaturization of the apparatus, and is pivoted by the shaft 109 to operate the actuator ( The read / write head H (hereinafter referred to as R / W head) is provided at the distal end of the actuator arm 111 that is rotationally driven by 110 via a suspension 112 made of a leaf spring.

The actuator 110 of the read / write head mechanism 105 is fixed to the main chassis 102 side in correspondence with the movable coil 110a provided at the rear end of the actuator arm 111 and the movable coil 110a. It is comprised by the flat magnet 110b. In addition, since the upper and lower pairs of the R / W heads H are provided, therefore, the upper and lower pairs of suspensions 112a and 112b are used as the suspension 112 provided at the tip end of the actuator arm 111. Suspensions 112a and 112b are extended and attached to the actuator arm 111 at a predetermined interval up and down on the centerline extension line, and the R / W head H is the inner surface of the front end portions of both suspensions 112a and 112b. On the side, it adheres to the slider provided in the direction orthogonal to a center line, and is facing up and down. Moreover, the rod bar 113 protrudes in the front-end | tip extension direction and is being fixed to the front-end | tip part outer surface side of both suspension 112a, 112b.

The read / write head mechanism 105 constituted in this way is positioned with the distal end of the actuator arm 111 including the suspensions 112a and 112b facing into the disc cartridge loading section 103, and the loaded disc cartridge ( 120, the tip end of the actuator arm 111 is formed in two upper and lower branches, i.e., fork, so as not to interfere with the hard disk. Suspensions 112a and 112b are provided in the upper and lower members.

In the latter half of the main chassis 102, the lamp 114 of the sliding block shaped as a guide of the R / W head H is positioned near the actuator arm 111 near the disc cartridge loading section 103. It is fixed toward the loading section 103, and this lamp 114 is also inserted into the loaded disk cartridge 120, so that it is bifurcated, that is, a recessed shape, so as not to interfere with the hard disk, thereby forming a fork shape. The rod bars 113 of the tip ends of the suspensions 112a and 112b of the actuator arm 111 are in sliding contact with the upper and lower surfaces of the lamp 114, so that the interval between the suspensions 112a and 112b, i.e., both R / W heads. The interval of (H) is maintained.

In the second half of the main chassis 102, a circuit board 115 including a control circuit of the actuator 110, a read / write amplifier of the R / W head H, and the like is disposed, and the actuator arm 111 side is disposed. It is connected by the flexible wiring board 116.

On the other hand, the disc cartridge 120 is rotated by the top and bottom halves 121 and 122 of the quadrilateral quadrangle shape and the disc accommodating part 123 between the two halves 121 and 122, as shown in Figs. It consists of a double-sided read / recordable magnetic disk, that is, a hard disk 124, possibly accommodated. A hub 125 formed of a ferromagnetic material is provided in the center of the hard disk 124 and corresponds to the center hole 126 formed in the lower half 122.

In addition, an opening portion into which the front end of the actuator arm 111 is inserted together with the suspensions 112a and 112b in which the R / W head H is provided is provided on the front surface side of the disc cartridge 120. 127 is formed, and the opening 127 is provided with a shutter 128 for opening and closing it. The shutter 128 is rotatably supported around the shaft 129 of the upper half 121 and closes the opening 127 when the cartridge is not in use, and prevents intrusion of dust, fingers, and the like. This configuration is configured to open automatically by the loading operation to the storage device 101.

In this way, in order to load the disk cartridge 120 into the disk storage device 101 as shown in FIG. 32, the front insertion slot 103a is inserted into the disk cartridge loading part 103 on the front half side of the main chassis 102. As shown in FIG. From this, when the opening portion 127 is inserted horizontally, the shutter 128 is automatically opened by the shutter opening / closing mechanism (not shown), and the opening portion 127 is opened. Then, when the disc cartridge 120 is inserted to a predetermined position, as shown in Fig. 33, the portion extending from the distal end of the actuator arm 111 to the suspensions 112a and 112b and the sliding portion of the lamp 114 are opened. While being located in the cartridge from 127, a portion of the outer circumference of the hard disk 124 is located in the recess of the lamp 114. In this state, both suspensions 112a and 112b have the rod bar 113 in contact with the high position of the lamp 114 so that the gap is enlarged and the gap between the R / W heads H is maintained by the hard disk 124. Is greater than the thickness.

In this state, the spindle motor 108 of the disk rotation drive mechanism 104 moves upward, protrudes to a predetermined height from the opening 106 in the center of the bottom surface of the disk cartridge loading section 103, and the suction of the chucking magnet 107 is carried out. The hub 125 of the hard disk 124 is attracted by the magnetic force through the center hole 126 of the lower half 122, and the spindle motor 108 and the hard disk 124 are integrated, that is, the hard disk 124 is Chucked to spindle motor 108.

Thereafter, the spindle motor 108 rotates, and the actuator arm 111 is rotated in the cartridge inward direction, that is, the hard disk 124 direction by the actuator 110, and the two suspensions 112a and 112b are rotated. The rod bar 113 of S is slid down from the high position of the lamp 114 to the low position direction, so that the R / W head H is gently landed on the hard disk 124 plane. This landing is an aerodynamic effect that occurs between the rotation of the hard disk 124 and the slider supporting the R / W head (H). It becomes a nm floating state, and the R / W head H and the hard disk 124 do not contact.

In this state, the R / W head H is positioned at a predetermined track in accordance with the rotational operation of the actuator arm 111 to read / write information about the hard disk 124.

In the disc storage device configured as described above, when the disc cartridge 120 is inserted into the disc cartridge loading portion, the tip of the actuator 110 of the read / write head mechanism 105 is moved from the opening 106 to the disc cartridge 120. It was made to go inside. Therefore, when the actuator 110 is to be retracted to the outside of the disc cartridge 120, the range of possible rotational movement of the voice coil motor is exceeded depending on the positional relationship between the disc cartridge 120 and the actuator 110 after mounting. There has been a problem that the actuator 110 cannot be retracted to the outside of the disc cartridge 120.

In addition, in the above-described disk storage device, the spindle motor needs to be moved up and down when the disk cartridge 120 is inserted, thereby realizing a mechanism that satisfies the safety, certainty, and durability required for the support mechanism of the spindle motor. In addition, it is not only difficult to make the lifting stroke of the spindle motor secure, but also it is difficult to reduce the thickness and size of the entire apparatus, and also to reduce the thickness of the disc cartridge 120.

Disclosure of Invention The present invention has been made in view of such a conventional problem, and the disk storage capable of fully retracting the rotary motion actuator to the outside of the disc cartridge, while reliably performing the operation, and making the overall device thinner and smaller in size It is an object to provide a device.

Fig. 1 is a pop-up type disc recording / reproducing apparatus showing an embodiment of the disk storage apparatus of the present invention, which shows a disk drive mechanism, an information recording / reproducing mechanism, and a disk loading mechanism housed in a mechanical chassis. Perspective view.

Fig. 2 is a perspective view of the cartridge holder pop-up by incorporating the mechanical chassis and the cartridge holder of the disc recording / reproducing apparatus of the embodiment of the present invention.

FIG. 3 is an exploded perspective view showing an enlarged main part of the cartridge holder of the disc recording / reproducing apparatus shown in FIG.

Fig. 4 is a sectional view of the cartridge holder of the disc recording / reproducing apparatus of the embodiment of the present invention popped up.

Fig. 5 is a sectional view showing a state where the cartridge holder of the disc recording / reproducing apparatus of the embodiment of the present invention is accommodated in the mechanical chassis.

Fig. 6 is an exploded perspective view showing an enlarged main part of the internal structure of the mechanical chassis of the disc recording / reproducing apparatus shown in Fig. 1;

FIG. 7 is an explanatory view showing the main part of the disk loading mechanism of the disc recording / reproducing apparatus shown in FIG. 1, showing the relationship between the cam gear and the rotary motion arm. FIG.

FIG. 8 is an explanatory view showing the main part of the disk loading mechanism of the disc recording / reproducing apparatus shown in FIG. 1, showing the relationship between the cam gear and the cam pin. FIG.

Fig. 9 is a sectional view showing the main part of the information recording and reproducing mechanism of the disc recording and reproducing apparatus shown in Fig. 1, showing the relationship between the rotary motion actuator and the lamp.

Fig. 10 is an X-X ray cross-sectional view of a lamp unit called the rotary motion actuator shown in Fig. 9;

FIG. 11 is a sectional view of the rotary motion actuator of the disk recording / reproducing apparatus shown in FIG.

12 is a perspective view showing a second embodiment of the slider of the information recording and reproducing mechanism of the disc recording and reproducing apparatus shown in FIG.

Fig. 13 is a perspective view showing a third embodiment of the slider of the information recording and reproducing mechanism of the disc recording and reproducing apparatus shown in Fig. 1;

Fig. 14 is a perspective view showing a portion of a disc cartridge according to the disc recording and reproducing apparatus of the present invention cut away.

Fig. 15 is a plan view showing an initial state of insertion of a disc cartridge of the disc recording / reproducing apparatus shown in Fig. 1;

Fig. 16 is a plan view showing a state before the shutter is released of the disc cartridge of the disc recording / reproducing apparatus shown in Fig. 1;

Fig. 17 is a plan view showing a state after the shutter release of the disc cartridge of the disc recording / reproducing apparatus shown in Fig. 1;

FIG. 18 is a plan view showing a state before loading of a recording / reproducing head of the disc recording / reproducing apparatus shown in FIG.

Fig. 19 is an explanatory view of a principal part, cutaway of the state during loading of the recording / reproducing head of the disc recording / reproducing apparatus shown in Fig. 1;

FIG. 20 is a plan view showing a loading completion state of the recording / playback head of the disk recording / reproducing apparatus shown in FIG.

FIG. 21 is an explanatory view showing a cut part of the loading completion state of the recording / reproducing head of the disc recording / reproducing apparatus shown in FIG. 1; FIG.

FIG. 22 is a plan view showing an unloading initial state of the recording / playback head of the disk recording / reproducing apparatus shown in FIG.

FIG. 23 is an explanatory view of a principal part, taken in a cut away state during unloading of a recording / playback head of the disc recording / reproducing apparatus shown in FIG.

FIG. 24 is a plan view showing a discharge state of the disc cartridge of the disc recording / reproducing apparatus shown in FIG.

Fig. 25 is an external perspective view showing a slot-in disc recording and reproducing apparatus showing still another embodiment of the disc storage apparatus of the present invention.

Figure 26 shows a disc recording / reproducing apparatus according to still another embodiment of the present invention, and is a plan view of a state before the disk cartridge is loaded.

Figure 27 shows a disc recording / reproducing apparatus according to still another embodiment of the present invention, and is a side view of a state before mounting of the disc cartridge.

Figure 28 shows a disc recording / reproducing apparatus according to still another embodiment of the present invention, and is a plan view of a state after the disk cartridge is loaded.

Fig. 29 shows a disc recording / reproducing apparatus according to still another embodiment of the present invention, and is a side view in a state in which a part after the disc cartridge is mounted is cut away.

Fig. 30 is a sectional view showing the disc recording and reproducing apparatus according to still another embodiment of the present invention, showing a state before completion of mounting of the disc cartridge.

Fig. 31 is a sectional view showing the loading completion state in which the disc cartridge has been loaded, showing the disc recording and reproducing apparatus according to still another embodiment of the present invention.

32 is a perspective view showing an example of a disc recording / reproducing apparatus according to the present invention;

Fig. 33 is a plan view showing a state where a disc cartridge is inserted into the apparatus main body of the disc recording and reproducing apparatus according to the present invention.

Fig. 34 is an exploded perspective view showing a disc cartridge according to the present invention.

* Explanation of symbols on important parts of the drawing

1: disc cartridge

4: shutter member

4a: shutter plate

4b: core hole opening and closing plate

4f: Manipulator Hook

5: shutter spring

6: offset arc part

7: head insertion hole

8: magnetic head

10: Guide Home

12: spindle motor

16: cartridge holder

17: mechanical chassis

18: cartridge insertion hole

30: disc drive mechanism

40: shutter opening mechanism

41: shutter release lever

50: information recording and reproducing mechanism

51: rotary motion actuator

52a, 52b: slider

55: rotary motion arm

57a, 57b: mounting plate

58a, 58b: suspension

70: disc loading mechanism

74: cam gear

76: eject lever

77: holder lock member

84: cam pin

86: eject arm

91: lamp

92: lamp arm

HD: Hard disk (disc-type recording medium)

According to the present invention for achieving the above object and the above object, there is provided a chassis, a loading means for removably loading a disc cartridge provided in the chassis, in which a disc-shaped recording medium is rotatably housed; A head supported by rotation drive means for rotationally driving a disk-shaped recording medium in a disk cartridge, a head means for accessing a disk-driven recording medium, and a rotation support member provided in the chassis, and having a head means mounted near the end. And a driving means for rotating the head moving means by the rotation support member and moving the head means to a desired position of the disc-shaped recording medium in the disc cartridge. Insert the head means into the disc cartridge only when approaching, and from the cartridge when not accessible It provides a disk apparatus, characterized in that to evacuate the head means.

Further, according to the present invention, a disk cartridge provided in a chassis and rotatably housed in a disk apparatus as an access method for inserting a disk cartridge into a disk apparatus and accessing the disk-shaped recording medium in the disk cartridge with a head. A loading step for removably loading, a rotation driving step for rotationally driving the disc-shaped recording medium in the loaded disc cartridge, a head moving step supported by a rotation support member provided in the chassis and loaded with a head means near the end; A driving process of rotating the head moving means by the rotation support member only when the head means approaches the disc-shaped recording medium, moving the head means into the disc cartridge, and an approach of approaching the head means to the rotationally-driven disc-shaped recording medium. An approach characterized by having a process is provided.

An example of an embodiment of a disc recording / reproducing apparatus showing the first embodiment as the disc storage apparatus of the present invention will be described below with reference to the drawings. The disc recording / reproducing apparatus according to this embodiment records new data signals on a hard disk (magnetic disk) showing one specific example of a disc shaped recording medium, or reproduces a data signal previously recorded on the hard disk. Applied to a disc recording and reproducing apparatus for recording and reproduction, the following procedure will be described.

[1] Structure of Disk Cartridge (Fig. 14)

[2] Appearance Configuration of Disc Recording & Reproducing Apparatus (FIG. 2)

[3] Internal structure of the disc recording and reproducing apparatus

(3-1) Disk Drive Mechanism (Fig. 1)

(3-2) Shutter opening mechanism (Fig. 2, Fig. 3)

(3-3) Information recording and reproducing mechanism (FIGS. 1, 6, 12-13)

(3-4) Disk Loading Mechanism (Figs. 1, 2, 4-11)

[4] operation of the disc recording and reproducing apparatus

(4-1) Initial state of insertion of the disc cartridge (Fig. 15)

(4-2) State before Shutter Open of Disk Cartridge (Fig. 16)

(4-3) State after Shutter Release of Disk Cartridge (Fig. 17)

(4-4) Initial state of loading the hard disk drive (Fig. 18)

(4-5) Status during hard disk drive loading (Figure 19)

(4-6) Loading completion state of the hard disk drive (FIGS. 20 and 21)

(4-7) Unloading State of Hard Disk Drive (FIGS. 22-24)

[1] Structure of Disc Cartridge (FIG. 14)

As shown in Fig. 14, the disc cartridge 1 includes a disk casing 2 composed of a pair of upper and lower parts 2a and 2b overlapping up and down, and a disk housing chamber formed in the disk casing 2. Similarly to the hard disk (magnetic disk) HD which shows one specific example of the disk-shaped recording medium which is rotatably accommodated in (3), the shutter member 4 similarly rotatably accommodated in the disk housing chamber 3 is provided. ) And a shutter spring 5 for biasing the shutter member 4 in the direction of closing the head insert 7 of the disc casing 2 while pressing the shutter member 4 in the plane direction of the disc housing chamber 3. . Then, the upper and lower halves 2a and 2b overlap each other with the opening surface side, and the contact surfaces are fused by, for example, ultrasonic processing or the like, or bonded with an adhesive, or the upper and lower halves 2a and 2b are fixed. By using various fixing means such as fastening with screws, the disc cartridge 1 is integrally formed.

The disc casing 2 of the disc cartridge 1 is made of a thin container having a planar shape of a substantially rectangular shape, and on both sides of the rear part thereof, the disc cartridge 1 The holding | gripping groove part 2k hold | maintained by this and the holding | gripping notch part 2c for exchanger holding | gripping are provided. The gripping notch 2c of the disc casing 2 serves to reliably perform an ejection operation when the disk cartridge 1 is automatically taken out from the disk storage device or an insertion operation when the disc cartridge 1 is automatically ejected from the disk storage device. Do it. In addition, when the cartridge changer device has a media rack for storing the disc cartridge 1, the cartridge changer device also serves to reliably enter and exit the media rack.

In the front part of the disc casing 2, that is, the front part of the disc cartridge 1 that forms the insertion side of the disc recording and reproducing apparatus into the cartridge insertion port, the center of the radius of curvature is set from the center line L in the insertion direction. An offset arc portion 6 is formed by offsetting toward the side (Fig. 14, left side as seen from the front side of the cartridge). As a result, the length of one side 2d of the disc casing 2 is set to be shorter than the length of the other side 2e, and the mutual contact portion is provided to the offset arc portion 6 on the side of the short side 2d. The head insertion opening 7 which is elongated in the transverse direction is opened by appropriately cutting a proper amount of.

The head insertion port 7 records a new data signal in the information recording unit when recording the hard disk HD accommodated in the disc casing 2, and reads out the data signal previously recorded in the information recording unit during reproduction. The magnetic head 8 enters and exits. 15 to 17, the head insertion opening 7 can be opened and closed by an arc-shaped shutter plate 4a provided at the distal end of the shutter member 4 accommodated in the disk housing chamber 3, as shown in Figs. have. In addition to the shutter plate 4a, the shutter member 4 has a core hole opening and closing plate 4b for opening and closing the central core hole 9 provided in a substantially central portion of the lower half 2b, and the core hole opening and closing plate ( The shutter plate 4a is integrally provided at one end of 4b) so as to intersect at right angles.

The proximal end of the shutter member 4, that is, the other end of the core hole opening / closing plate 4b, is pivotally rotatable to the support point shaft 2f provided to be biased toward the side 2e longer than the rear center of the lower half 2b. Supported. By rotating the shutter member 4 around the support point axis 2f, the shutter plate 4a moves along the inner surface of the offset arc portion 6, and the core hole opening / closing plate 4b moves in the disk storage chamber. (3) Move along the inner surface. When the shutter member 4 is on the short side 2d side, the shutter plate 4a closes the head insertion opening 7, and the core hole opening and closing plate 4b opens the center core hole 9. It is closing. On the other hand, when the shutter member 4 moves to the long side 2e side, the shutter plate 4a opens the head insertion opening 7 and the core hole opening and closing plate 4b opens the center core hole 9. It is. Therefore, in the core hole opening and closing plate 4b of the shutter member 4, the shutter notch 4c which can open the center core hole 9 completely at the time of shutter opening is provided.

This shutter member 4 is always biased in the direction of closing the head insertion port 7 by the shutter spring 5 which consists of a torsion coil spring. This shutter spring 5 is loosely fitted to the support shaft 2g which the coil part shifted to the side surface 2e side longer than the support point shaft 2f of the lower half part 2b. The spring piece 5a which protrudes from the one end of the coil part of this shutter spring 5 contacts the inner surface of the lower half part 2b, and the spring piece 5b which protrudes from the other end of the coil part has the core hole opening and closing plate 4b. It hangs on 4 d of spring support pieces which were provided near the base end part of (). In addition, the shutter member 4, in particular the shutter plate 4a, which is biased by the shutter spring 5 while ensuring a gap between the upper half 2a and the lower half 2b of the head insertion portion and the suspensions 58a and 58b described later. In the present embodiment, the thickness of the portion in contact with the shutter plate 4a of the lower half 2b and the peripheral portion thereof are thinned from the reasons of the attachment structure and the like.

The core hole opening and closing plate 4b of the shutter member 4 is provided with an operation arm 4e which protrudes in an arc shape on the opposite side to the shutter cutout 4c. An operating hook 4f is integrally provided at the tip end of the operation arm 4e. The stepped portion is set in the operation hook 4f in consideration of the thickness of the hard disk HD, and the stepped portion exposes the operation hook 4f to the outside from the joint surface of the upper and lower halves 2a and 2b. I'm going to let you. Thereby, the operation arm 4e of the shutter member 4 penetrates the cutout part 2i provided in the arc-shaped side wall 2h formed in the rear part of the lower half part 2b, and this operation arm 4e is carried out. The front end of the operation hook 4f continuous to the front end of the disk is extended from the cutouts 2j provided on the joining surfaces of the upper and lower halves 2a and 2b to the long side surface 2e of the disc casing 2 in the front-rear direction. Exposed into the guide groove 10.

The guide groove 10 has a wide width 10a in the thickness direction (overlapping direction) set on the front side of the disc casing 2 and a width in the vertical direction set on the rear side of the disc casing 2. The narrow narrow portion 10b, the inlet portion 10c formed at the distal end portion of the wide portion 10a and similarly enlarged and inclined inward, and the rear portion of the wide portion 10a and the front of the narrow portion 10b. The opening-closing operation part 10d set between the parts is provided. In the opening / closing operation part 10d of this guide groove 10, the inclined surface 10e is formed in each of the upper half part 2a and the lower half part 2b in the part which continues from the wide part 10a to the narrow part 10b. The inclined surface 10e guides the working piece 41c of the shutter release lever 41 to be described later so that the working piece 41c can smoothly move from the wide part 10a to the narrow part 10b. It is.

The depth Tb of the narrow portion 10b of the guide groove 10 is formed sufficiently deeper than the depth Ta of the wide portion 10a (TbTa), and thus the operation hook in the state where the shutter member 4 is completely opened. 4f does not protrude largely from the guide groove 10 to the outside. The side surface of the opening / closing operation part 10d having such a step is formed by a part of the arc-shaped sidewall 2h described above, and its outer surface is smoothly continuous in an arc shape. The operation hook 4f of the shutter member 4 described above is located in the narrow width portion 10b of the guide groove 10, and only the tip of the operation hook 4f protrudes into the guide groove 10 at all times.

The hard disk HD is composed of a disk-shaped disk-shaped recording member whose upper and lower surfaces are formed of a signal recording surface by a magnetic recording method, and a central core 11 adsorbed by a magnet of the spindle motor 12 to a central portion thereof. Is fixed integrally. The center core 11 of this hard disk HD corresponds to the center core hole 9 provided in the lower half 2b, and the center core hole 9 is formed by the rotational movement of the core hole opening and closing plate 4b. By opening, it comes into contact with the turntable integrated spindle motor 12 inserted from the present center core hole 9. The above-mentioned magnet of a ring shape is fitted and integrally provided in the rotation part of this spindle motor 12, The hard disk HD is chucked by the spindle motor 12 by the attraction force of this magnet, and is integrally rotated and driven. .

As shown in Fig. 15 and the like, an error erasing prevention tab 13 for switching the presence or absence of a write prohibit hole is provided on one side of the rear portion of the disc cartridge 1. In addition, in the vicinity of the error erasing prevention tab 13 and in the vicinity of the shutter spring 5 located on the opposite side thereof, a positioning hole for installing the disc cartridge 1 at a predetermined position of the disc recording / reproducing apparatus. 14a and 14b are provided.

Although not shown, the core hole opening / closing plate 4b of the shutter member 4 is provided with one or more guide grooves extending in an arc shape around the support point shaft 12f, and the guide grooves have a lower half portion 2b. Guide pins provided in the are coupled. In addition, the head insertion port 7 and the head insertion port 7 and the center core 11 of the hard disk HD are guide pins coupled to the guide grooves to reduce the sliding frictional force between the core hole opening and closing plate 4b and the center core 11. The opening operation of the center core hole 9 is performed smoothly.

As the material of the upper and lower halves 2a and 2b having such a configuration, for example, a synthetic resin material such as polycarbonate (PC) is suitable, but other synthetic resins may be used. In this embodiment, as the material of the shutter member 4, a polycarbonate (PC) is used for the shutter plate 4a, while a stainless steel plate is used for the core hole opening and closing plate 4b. The shutter member 4 is integrally molded by externally insert-molding the shutter plate 4a of polycarbonate (PC). However, it goes without saying that the entirety of the shutter member 4 may be formed of a synthetic resin material such as polycarbonate (PC), and the entirety of the shutter member 4 may be formed of a metal material such as a stainless steel sheet. In addition, even when the shutter member 4 is externally inserted and molded, a separate synthetic resin material such as polyacetal (POM) having excellent sliding motion can be used in addition to the polycarbonate (PC).

[2] Appearance Configuration of Disc Recording & Reproducing Apparatus (FIG. 2)

The disc recording and reproducing apparatus of this example is a pop-up type disc storage apparatus in which the cartridge holder 16 on which the disc cartridge 1 is mounted is tilted, and the appearance of the apparatus is shown in FIG. The disc recording and reproducing apparatus has a size at which the disc drive mechanism 30, the shutter opening mechanism 40, the information recording and reproducing mechanism 50, and the disc drive loading mechanism 70, which will be described later, can be incorporated. The mechanical chassis 17 and the cartridge holder 16 etc. which were attached to the mechanical chassis 17 so that tilting was possible and the cartridge insertion opening 18 of the front surface was opened and opened were made possible.

The mechanical chassis 17 is composed of a shallow rectangular casing which is opened to the upper surface, and both ends of the rear portion of the cartridge holder 16 are provided at both inner sides of the mechanical chassis 17. Support brackets 19 for tiltable support are attached in a left and right pair. A bearing hole is provided in the rear part of these support brackets 19, and the rotary motion support point shaft 19a which protruded in the both ends of the rear part of the cartridge holder 16 is fitted in each bearing hole so that rotational motion is possible, respectively. .

The cartridge holder 16 includes a rectangular upper face plate 16a that is slightly smaller than the mechanical chassis 17 in plan view, and side plates 16b and 16c that are continuous on both left and right sides of the upper face plate 16a. And holding plates 16d and 16e which are bent inwardly and appropriately inwardly on the lower portions of both side plates 16b and 16c, and cartridge insertion holes 18 are set in the front part of the space portion surrounded by these. . Therefore, the inside of the cartridge holder 16 is a space portion of a suitable size for the disc cartridge 1, the disc cartridge 1 enters and exits from the cartridge insertion opening 18, and the disc cartridge 1 is provided in the disc cartridge loading section. Is loaded.

Moreover, the shaft support pieces 16f and 16g are provided in the lower part of the both side plates 16b and 16c of the cartridge holder 16 by bending a part of each holding plate 16d and 16e downward. Between these shaft support pieces 16f and 16g, the holder reinforcement shaft 20 as a reinforcement member between cartridge holding | maintenance parts is hypothesized, and the both ends of this holder reinforcement shaft 20 are axles by the fixing screw 21. It is fixed to the support pieces 16f and 16g, respectively. Further, stopper pieces 22a and 22b are formed in the front and rear middle portions of the cartridge holder 16 to prevent the insertion of the disc cartridge 1 by a predetermined amount or more by bending a part of the side plates 16b and 16c inward. (See FIG. 15 etc.).

In the front part of one side plate 16b of this cartridge holder 16, opening parts 23a and 23b which extend a predetermined distance in the front-back direction and respectively extend in the front-back direction are provided. And at the rear part of the axial support piece 16g of the other side plate 16c of the cartridge holder 16, the support piece 16h is provided by bending a part of the holding plate 16e downward, The engagement piece 24 which protrudes inward is provided in the support piece 16h. This engagement pin 24 forms a part of the locking mechanism of the cartridge holder 16 mentioned later.

Further, the pressing plate springs 25 are attached to both front sides of the upper face plate 16a of the cartridge holder 16 so as to correspond to the upper sides of the holding plates 16d and 16e. The pressing plate spring 25 biases the inserted disc cartridge 1 toward the holding plates 16d and 16e to achieve positioning in the height direction of the disc cartridge 1 relative to the cartridge holder 16. As a material of this cartridge holder 16, metal sheet metal materials, such as an electrogalvanized steel plate and a stainless steel plate, are suitable, for example. As the material of the mechanical chassis 17, for example, a metal material such as aluminum die cast or an aluminum plate is suitable, but engineering plastics such as polycarbonate and the like having high mechanical strength may be used.

[3] Internal structure of the disc recording and reproducing apparatus

(3-1) Disk Drive Mechanism (Fig. 1)

This disc recording and reproducing apparatus is provided with a disc drive mechanism 30 as shown in FIG. The disk drive mechanism 30 includes a turntable integrated spindle motor 12 in which the hard disk HD of the disk cartridge 1 described above is chucked. The spindle motor 12 is loaded upward from the front center portion of the mechanical chassis 17, and the threaded portion penetrating the flange portion 12a is screwed into the screw hole of the mechanical chassis 17. It is fastened and fixed on the mechanical chassis 17 by the plurality of attachment screws 31 (three in this example).

In the flange portion 12a of the spindle motor 12, a plurality of cartridge support pins 32 (two in this example) supporting the vicinity of the center core hole 9 of the disc cartridge 1 are provided. As described above, a magnet is attached to the rotating part of the spindle motor 12, and the magnet is attracted to the center core 11 and the hard disk HD is chucked to the rotating part, thereby allowing the inside of the disk storage chamber 2 to be rotated. The hard disk HD is rotationally driven by the spindle motor 12.

(3-2) Shutter opening mechanism (Fig. 2, Fig. 3)

As shown in Fig. 2 and the like, the shutter opening mechanism 40 is for opening the head insertion port 7 of the disc cartridge 1 mounted on the cartridge holder 16 by triggering the cartridge main body side. It is arrange | positioned at one side plate 16b of the cartridge holder 16. As shown in FIG. This shutter opening mechanism 40 is provided with the shutter release lever 41 which is a balance arm member, and the coil spring 42 which showed one specific example of the biasing member which biases this shutter release lever 41, have. The shutter release lever 41 is a lever main body 41a having a U-shaped cross section, an input piece 41b serving as a mimic end projecting to be spaced apart from each other in the lateral direction from both sides of the lever main body 41a, and an acting end. The contact part 41d which has the acting piece 41c and protrudes on the movement trace of the disc cartridge 1 is provided in the front-end | tip part of the input piece 41b.

In order to attach this shutter release lever 41 to the cartridge holder 16, the side plate 16b of the cartridge holder 16 has a pair of pins by bending a part between the front and rear openings 23a and 23b up and down. Support pieces 43a and 43b are provided. A lever body 41a of the shutter release lever 41 is interposed between these pin support pieces 43a and 43b, and a pin hole provided in each pin support piece 43a and 43b and a pin hole provided in the lever body 41a. The shutter release lever 41 swings horizontally on one side of the cartridge holder 16 by penetrating the shaft pin 44 having the head at one end and fixing the other end of the shaft pin 44. Possibly supported.

In this state, the input piece 41b of the shutter release lever 41 opposes the opening part 23b of the back of the cartridge holder 16, and the action piece 41c opposes the front opening part 23a. The coil part of the coil spring 42 is loosely fitted to the shaft pin 44 which axially supports this shutter release lever 41 to the cartridge holder 16, and the spring piece 42a which continues to one end of this coil part is carried out. ) Is in contact with the side plate 16b, and the spring piece 42b continuous to the other end of the coil portion is in contact with the lever body 41a. By the spring force of this coil spring 42, the input piece 41b of the shutter release lever 41 is biased in the direction which enters into the opening part 23b, and as a reaction, the acting piece 41c moves from the opening part 23a. It is shifted in the drawing direction.

In order to limit the amount of rotational movement of the shutter release lever 41, on the inner surface of the lever main body 41a, an input side stopper portion 41e for preventing the input piece 41b from entering the opening 23b of a predetermined amount, An operating side stopper portion 41f which prevents the operating piece 41c from entering the opening 23a in a predetermined amount is set. The input piece 41b of the shutter release lever 41 enters into the wide part 10a via the introduction part 10c of the guide groove 10 of the disc cartridge 1, and the acting piece 41c enters the guide groove ( It enters into narrow part 10b via the operation part 10d of 10).

As a function of the input piece 41b of the shutter release lever 41, in addition to the function as an input portion of the operating force, it also serves as a positioning function in the horizontal direction of the disc cartridge 1, and is suitable while maintaining some rigidity. Since it is required to have elasticity, in this example, the width is enlarged in the width direction of the guide groove 10, and the contact portion 41d is formed by bending the tip portion in the depth direction of the guide groove 10. . Therefore, the rigidity of the width direction (groove width direction) of the guide groove 10 of the input piece 41b becomes higher than the rigidity of the depth direction (groove depth direction) of the guide groove 10 orthogonal to this, and accordingly The input piece 41b is made difficult to generate deformation in the groove width direction.

On the other hand, since the function of the acting piece 41c of the shutter release lever 41 is mainly to press the operation hook 4f, in this example, the depth direction of the guide groove 10 from the vicinity of the lever main body 41a. It is formed so as to increase the rigidity in the horizontal direction by bending. Therefore, the rigidity of the groove width direction of the acting piece 41c becomes lower than the rigidity of the groove depth direction, whereby the actuating piece 41c makes it easier to generate elastic deformation in the groove width direction, and thus the cartridge holder 16 The disc cartridge 1 can be kept in the up and down swing of the disc cartridge 1 held by the "

Moreover, with the side plate 16b by the shutter opening mechanism 40 side of the cartridge holder 16, the back side of the pin support pieces 43a and 43b prevents misinsertion of the disc cartridge 1 to prevent misinsertion. The convex part 26 is provided. The misinsertion prevention convex part 26 is formed by raising a part of the side plate 16b in a hemispherical shape inside, and this misinsertion prevention convex part 26 is formed in the guide groove 10 of the disc cartridge 1. In this case, the disc cartridge 1 can be completely inserted only when the guide groove 10 is inserted into this misinsertion prevention projection 26, and when the disc cartridge 1 does not match, the disc cartridge 1 Insertion is prevented, whereby it is possible to determine whether the disk cartridge 1 is in the inserted state.

Thereby, the operation hook 4f of the shutter member 4 is located in the narrow width part 10b of the guide groove 10 of the disc cartridge 1, and this operation hook 4f is moved to the shutter release lever 41. By pressing with the acting piece 41c, the shutter member 4 is rotated against the spring force of the shutter spring 5, so that both the head insertion opening 7 and the center core hole 9 are opened.

(3-3) Information recording / reproducing mechanism (Figs. 1, 6, 12-13)

This information recording and reproducing mechanism 50 is arranged in the rear portion of the mechanical chassis 17 as shown in Fig. 1 and the like, and has a dogleg-type rotary motion actuator 51 as a rotary support piece and this rotation. A pair of upper and lower sliders 52a and 52b mounted on the distal end of the exercise actuator 51 so as to be able to float thereon is provided.

The rotary motion actuator 51 includes a rotary motion arm 55 that is rotatably supported by the mechanical chassis 17, a drive coil 56 fixed to the rotary motion arm 55, and a pair of mounts. The boards 57a and 57b and a pair of suspensions 58a and 58b fixed to the mounting plates 57a and 57b are provided. The rotary motion arm 55 of the rotary motion actuator 51 is supported by the mechanical chassis 17 so as to be rotatable by the bearing 59 fitted to the horizontal midway portion, and on one side thereof. The fan-shaped drive coils 56 around which copper wires are wound around each other are held in the formed two branched portions 55a.

As shown in Fig. 9, the stepped portions are provided on both the upper and lower sides of the distal end portion of the rotary motion arm 55, and the proximal ends of the mounting plates 57a and 57b are fitted to the displaced portions, and the proximal end portions are spot welded, caulked or By affixing by fixing means, such as an adhesive agent, a pair of mounting plate 57a, 57b is provided facing a predetermined clearance gap in the up-down direction. The pair of mounting plates 57a and 57b are formed in an inverted L shape, and the proximal ends of the suspensions 58a and 58b are fixed to the inner surfaces of the front end portions of the mounting plates 57a and 57b by spot welding, caulking or adhesive. The gaps, which are fixed to each other and formed between the tip portions of the suspensions 58a and 58b and between the bent portions of the mounting plates 57a and 57b, communicate with each other in an open manner over the entire circumference. In this way, the rotary motion actuator 51 is formed in an L-shape, that is, a dogleg shape in plan view as a whole by the rotary motion arm 55, the mounting plates 57a and 57b, and the suspensions 58a and 58b. .

The pair of suspensions 58a and 58b are formed of a leaf spring type member having elasticity, and the rigidity of the proximal end is set low by providing an opening 60 in the center of the proximal end side to lower the rigidity. Thus, by lowering the rigidity of the proximal end portions of the respective suspensions 58a and 58b and giving the flexibility to the distal end side, the sliders 52a and 52b attached to the distal end can be tilted so that they can be easily undulated in the vertical direction. It is. Further, both side edges of each of the suspensions 58a and 58b are bent to the inner surface side to form ribs 58a ₁ and 58a ₂ and ribs 58b ₁ and 58b ₂ , and the inner ribs 58a ₁ and 58b ₁ are distal ends. The side is being cut (cut back). In this way, by cutting back the ribs 58a ₁ and 58b ₁ on the inner surface side of the suspensions 58a and 58b, the ribs 58a ₁ and 58b ₁ are eliminated from interfering with the lamp arm 92, and the ribs ( 58a ₁ , 58b ₁ ) can be eliminated.

Moreover, the convex parts 61a and 61b which protrude in a hemispherical shape inside are provided in the intermediate part of each suspension 58a, 58b, respectively. Between the convex portions 61a and 61b of the suspensions 58a and 58b, a lamp to be described later is inserted at the time of loading and unloading so that the front end portions of both suspensions 58a and 58b are spaced apart in the vertical direction. The upper and lower sliders 52a and 52b do not come into contact with both the upper and lower sides of the hard disk HD. The convex portions 61a and 61b may be subjected to throttling to the suspensions 58a and 58b to be raised in a hemispherical shape or protrude in a hemispherical shape by external insertion molding, or may be formed by various other means.

As the shape of the pair of sliders 52a and 52b, for example, one having a structure as shown in Figs. 12 to 13 can be used.

Fig. 12 shows the catamaran slider 52B. The catamaran slider 52B forms a basic form of the TPC slider 52A and has a structure in which the left and right flow groove end portions 63b and 63c are removed from the protrusion 63 in the above embodiment.

13 illustrates a negative pressure slider 520. The negative pressure slider 52C generates negative pressure on the back surface of the slider by the negative pressure generating groove 62a, and the differential pressure between the negative pressure and the positive pressure generated by the air bearing surface (the absolute negative negative pressure of the positive pressure). The absolute value of) causes the slider to rise from the disk surface. The negative pressure slider 52C has a shape similar to that in which the front side portion of the air flow groove 62 is closed, and a negative pressure generating groove 62a opened from the center of the rear surface of the slider body to the rear is formed. have. According to this negative pressure slider 52C, a constant flying height indicating how the parallelism between the disk opposing surface and the disk surface of the slider rising from the surface of the hard disk HD varies in and around the disk radial direction. The performance (hereinafter referred to as "CFH performance") can be made good and the speed dependency is small, so that substantially uniform performance can be obtained in any of the inner and outer sides of the disk radial direction, and the slider can be stably lifted from the surface of the disk. You can.

At the leading ends of the sliders 52A and 52B having such a configuration, the magnetic heads 8 for recording and reproduction are respectively provided so as to face up and down. In each of the sliders 52A and 52B, the centerline X of the air flow groove 62 or the negative pressure generating groove 62a and the centerline Y of the suspensions 58a and 58b have a predetermined intersection angle. It is set to intersect with θ.

Generally, the slider is set in such a manner that the extending direction of the air flow groove is parallel to the extending direction of the suspension, but in this embodiment, the crossing angle θ is set to about 70 degrees. In this way, the bent angles of the sliders 52a and 52b can be reduced by attaching the sliders 52a and 52b with a predetermined crossing angle θ with respect to the extending directions of the suspensions 58a and 58b. In addition, the said crossing angle (theta) is not limited to 70 degrees like this example, It can set an appropriate angle as needed.

In addition, as shown in FIG. 11, the intermediate part of the rotary motion arm 55 is provided with recessed parts 64a and 64b by reducing the thickness of the inside of upper and lower surfaces, and it rotates by these recessed parts 64a and 64b. The weight of the exercise arm 55 is reduced. On the other hand, the flexible printed wiring board 65 is arrange | positioned at the upper surface of the rotary motion arm 55 so that the opening of the recessed part 64a may be closed. The arm contact portion of the flexible printed wiring board 65 is bonded to the rotary motion arm 55 with an adhesive, and is fixed to the boss portion 55c of the rotary motion arm 55 with the attachment screw 66.

This is to reinforce the rigidity of the rotary motion arm 55 to the flexible printed wiring board 65 padded with reinforcement boards, such as aluminum, and to raise the rigidity. This flexible printed wiring board 65 has the structure which the base board 65a which is a reinforcement board of aluminum, etc. adhere | attached on one side, The flexible printed wiring board 65 with this reinforcement board is added, and the rotary motion arm is attached. By making the cross-sectional shape of the 55 into a box shape, the intensity | strength of the rotary motion arm 55 is made high in this example. Thereby, while reducing the weight of the rotary motion arm 55, the strength of the rotary motion arm 55 can be increased at the same time.

This flexible printed wiring board 65 is connected to the connector 68 via the flexible cable part 67. The connector 68 is mounted on the wiring board 35 arranged on the spindle motor 12 side, and the wiring board 35 is fixed on the mechanical chassis 17. An electronic circuit is printed-molded by the conductor to this wiring board 35, and electronic components other than the amplifier 36 are electrically connected to this electronic circuit, and the control apparatus is comprised.

As a result, the rotary motion actuator 51 is bent at approximately 90 degrees at the portions of the mounting plates 57a and 57b, as shown in Figs. 6 and 18, and as the so-called dogleg type is reversed L It is shaped. From such a shape, the rotary motion actuator 51 of this example is called a dog leg type.

A flat magnet 37 curved in an arc shape is mounted on the actuator support 53 for supporting such a rotary motion actuator 51 in a rotatable manner so as to face the drive coil 56 from below. The magnet 37 has the NS both poles magnetically attached in the plane direction (for example, the S pole near the spindle motor 12 and the N pole far away). By adjusting the direction and magnitude of the current flowing to the drive coil 56 in the magnetic field by the magnet 37, the rotational movement position of the rotational motion actuator 51 is automatically controlled within a predetermined area. The voice coil motor of the rotary motion actuator 51 does not generate torque outside the automatic control region, and at the same time the rotary motion arm 55 is rotated by the cam gear of the disk loading mechanism 70 described below, The lock is to be locked at a predetermined rotational movement position.

In this embodiment, a magnesium alloy is used as the material of the rotary motion arm 55 and a stainless steel plate is used as the material of the mounting plates 57a and 57b and the suspensions 58a and 58b. It can shape | mold with engineering plastics with big strength, etc. In addition, the rotary motion arm 55 and the mounting plates 57a and 57b may be integrally formed of the same material.

(3-4) Disk Drive Loading Mechanism (FIGS. 1, 2, 4-11)

In this disc recording / reproducing apparatus, the hard drive chucked to the spindle motor 12 of the disk driving mechanism 30 corresponds to the above-described disk driving mechanism 30, shutter opening mechanism 40, and information recording / reproducing mechanism 50. A disc loading mechanism 70 is provided for loading and unloading the recording / playback head onto the disc HD. This disk loading mechanism 70 is disposed on the mechanical chassis 17 similarly to the disk drive mechanism 30.

The disk loading mechanism 70 includes a drive motor 71, a worm 72, a worm wheel 73, a cam gear 74, a lamp member 75, an eject lever 76, and a holder lock member 77. And a popup spring 78, a popup suppression plate 79, a positioning pin 80, a cartridge support pin 81a, a holder stopper 81b, and the like. The drive motor 71 of the disc loading mechanism 70 is disposed behind the actuator support 53, and the worm 72 is fixed to the rotation shaft thereof. The worm 72 is engaged with the worm 72 in a rotatable manner by the support shaft 73b standing up on the mechanical chassis 17.

The input gear 73a is integrally provided in this worm wheel 73, and the intermediate gear 82a is meshed with this input gear 73a. The output gear 82b is integrally provided in this intermediate gear 82a, and they are supported rotatably by the support shaft 82c standing up on the mechanical chassis 17. As shown in FIG. The gear portion 74a of the cam gear 74 rotatably supported by the cam shaft 83 standing up on the mechanical chassis 17 is similarly engaged with the output gear 82b.

The cam gear 74, which is a rotating cam mechanism as the operation mode switching means, has a cam circumferential surface 74b formed of a circular outer circumferential surface formed on one surface side of the gear portion 74a, and a cam formed on the other surface side of the gear portion 74a. The groove 74c is provided. Then, the cam relief portion 74d is provided by cutting a portion of the cam circumferential surface 74b and recessed inward, and at the end of the cam circumferential surface 74b by providing the cam relief portion 74d. A cam action end 74e is formed which protrudes in an arc in the circumferential direction. The cam circumference 74b and the cam action end 74e are in sliding contact or contact with the cam projection 55b provided to protrude downward from the lower portion of the rotational motion arm 55 of the rotational motion actuator 51.

By this cam gear 74, the rotary motion operation of the rotary motion actuator 51, the movement of the lamp 91 which guides the magnetic head 8 on the surface of a disc-shaped recording medium, and a disc cartridge are mentioned later. The operation of the eject lever 76 for discharging (1) is switched.

As a result, the state where the cam protrusion 55b of the rotary motion actuator 51 is in sliding contact with the cam circumferential surface 74b of the cam gear 74 is such that the magnetic head 8 is placed outside the disc cartridge 1. 18 and the arm lock state in which the rotary motion actuator 51 completely protrudes out of the disc cartridge 1 (see FIGS. 23 and 24). In addition, the state in which the cam protrusion 55b is in the cam relief part 74d of the cam gear 74 is a loading completion state (refer FIG. 20, FIG. 21). Only in this loading state, the rotary motion actuator 51 can automatically control the rotary motion position by the voice coil motor made of the drive coil 56 and the magnet 37 described above. The cam working end 74e of the cam gear 74 is in contact with the inner surface of the cam protrusion 55b in a loading state in which the magnetic head 8 is inserted into the disc cartridge 1 (see Fig. 19). And the unloading state in which the magnetic head 8 is discharged from the disc cartridge 1 (see Fig. 22).

The cam groove 74c of this cam gear 74 is formed corresponding to the cam circumferential surface 74b and the cam relief part 74d. That is, this cam groove 74c is used only for ejecting the disc cartridge to the outside of the apparatus. Specifically, through the operation of the eject lever 76, the cam holder 16 is moved to the mechanical chassis 17. The releasing operation of the holder locking mechanism locked to the side) and the ejecting operation of pushing the disc cartridge 1 out of the cartridge holder 16 are executed.

Therefore, the cam groove 74c extends in the circumferential direction from the outer circumferential side close to the cam circumferential surface 74b on the opposite side of the cam relief portion 74d, and enters the radially inward from the position which is rotated approximately 90 degrees. It is formed so as to be closest to the cam gear 83 in the position which rotated about 180 degree rotation. The cam pin 84 of the eject lever 76 as an ejecting arm member is coupled to this cam groove 74c so as to be slidable.

This eject lever 76 is axially supported by the support point shaft 85 standing upright in the mechanical chassis 17 at the intermediate part of the longitudinal direction so that rotational movement is possible. The cam pin 84 described above is attached upwardly to one end portion of the eject lever 76 in the longitudinal direction, and as shown in FIGS. 7 and 8, the cam groove 74c of the cam gear 74. ) Is coupled from the lower side. Moreover, the press part 76a for rotating the holder lock member 77 of a holder lock mechanism is provided in the other end part of the eject lever 76 in the longitudinal direction.

In addition, the proximal end of the eject arm 86 is provided integrally near the support point shaft 85 of the eject lever 76, and the cartridge pressing pin 87 is integrally provided at the distal end of the eject arm 86. have. The eject lever 76 having such a configuration extends the cam pin 84 side of the eject lever 76 to the rear side as shown in Fig. 18 and the like and extends the press portion 76a side to the front inclinedly. At the same time, the ejection arm 86 is arranged to extend laterally.

The holder lock mechanism provided to face the pressing portion 76a of the eject lever 76 includes a coil spring 88 for rotating the holder lock member 77 described above. As a material of the holder lock member 77, although a stainless steel plate is used in this example, it can also be shape | molded by engineering plastics etc. with large mechanical strength, such as polycarbonate.

As shown in Fig. 1 and the like, the holder lock member 77 is supported by a support point shaft 89 standing up on the mechanical chassis 17 so as to be rotatable. The holder lock member 77 includes a hook claw 77a provided with the hook end facing backward, a pressure receiving portion 77b in contact with the pressing portion 76a of the eject lever 76, and a coil spring 88. The spring support piece 77c which catches the one end of () is provided. In addition, the holder lock member 77 is provided with a plurality of circular arc grooves 77d extending in an arc shape in the circumferential direction about the support point shaft 89, and each of the arcuate grooves 77d has a mechanical chassis. Several regulating pins 89a standing up at 17 are coupled to each other so as to be slidable.

One end of the coil spring 88 is hung on one of the regulating pins 89a, and the holder lock member 77 presses the pressure receiving portion 77b by the spring force of the coil spring 88. It is biased in the direction approaching 76a). Then, the rotational movement amount of the holder lock member 77 is regulated to a predetermined position by the restricting pin 89a coupled to the arcuate groove 77d. The locking hook 77a of the holder lock member 77 is coupled to the engagement pin 24 with the cartridge holder 16 inserted into the mechanical chassis 17, whereby the cartridge holder 16 is engaged. Is locked.

Below this cartridge holder 16, the pop-up spring 78 which consists of a coil spring which showed one specific example of a biasing member is arrange | positioned. This pop-up spring 78 is compressed in a state where the cartridge holder 16 is attached to the mechanical chassis 17, and is popped up and tilted by releasing the holder lock mechanism, as shown in Figs. 2 and 5. The front side of the cartridge holder 16 is lifted by the biasing force. Incidentally, the lift amount of the cartridge holder 16 is limited by the popup suppression plate 79 as the gaseous-phase control member. As the pop-up spring 78, in addition to this example, a spring material such as a leaf spring can be used, and a rubber-like elastic body such as synthetic rubber can be applied.

The popup suppression plate 79 has a J-shaped longitudinal section shape, and a bearing member 79a is provided on the upper side thereof so as to be parallel to the cross-sectional direction. A shaft pin 79b is fixed to the bearing member 79a of the popup suppression plate 79, and the shaft pin 79b is supported by the support bracket 90 so as to be rotatable. The support bracket 90 is fixed to the mechanical chassis 17 by fixing means such as mounting screws, so that the popup suppressor plate 79 is supported by the mechanical chassis 17 through the support bracket 90. It is attached so that it can be tilted up and down.

As shown in Figs. 1 to 5, the pop-up suppressing plate 79 is slidably coupled to the small diameter portion 20a of the holder reinforcement shaft 20 described above with the hook portion 79c on the tip end side. As a result, the pop-up suppressing plate 79 restricts the tilting of the cartridge holder 16 to the upper part. As the tilting means of the cartridge holder 16, a means other than the cam mechanism can be applied in addition to the present embodiment. For example, a cylindrical cam having a helically extending cam groove is rotatably installed in the mechanical chassis 17, while a cam pin that is slidably coupled to the cam groove is installed in the cartridge holder. It is the same as tilting the cartridge holder by elevating the cam pin by the rotational motion of the cylindrical cam.

Further, in the vicinity of the distal end of the rotary motion actuator 51 described above in the depth side of the mechanical chassis 17, a lamp 91 for temporarily expanding the interval between the pair of sliders 52a and 52b is disposed. It is. The lamp 91 presses the lamp arm 92 inserted between the pair of sliders 52a and 52b and the rear side of the rotary motion arm 55 to move the sliders 52a and 52b to the cartridge side. The pressing part 93 is provided. As the material of the lamp 91, for example, a synthetic resin material such as polyacetal (POM) is suitable, but other synthetic resin materials may be used.

The lamp 91 is provided with a pair of insertion through holes 91b and 91c arranged in parallel with each other, and the linear guide shafts 94a and 94b can slide in these insertion holes 91b and 91c, respectively. It is inserted through. Both front and rear ends of the pair of linear guide shafts 94a and 94b are clamped from the top and the bottom by the pair of bearing blocks 96 and the shaft pressing piece 96a, and thus the mechanical chassis 17 It is fixed at) and is supported at both ends. The lamp arm 92 is arrange | positioned above middle part of these linear guide shafts 94a and 94b.

The ramp arm 92 is set on the movement trajectory of the convex portions 61a and 61b provided on the upper and lower suspensions 58a and 58b of the rotary motion actuator 51, and the upper and lower pairs of sliders 52a and 52b are provided. Is configured to move outside of the lamp arm 92. 9, the inclined surface 92a is provided in the upper and lower surfaces of the front-end | tip part of the lamp arm 92 so that the convex parts 61a and 61b may be easily raised.

The coil spring 95 which biases this lamp 91 to the spindle motor 12 side is hung by the spring engaging piece 91a which the one end provided in the lamp 91, and the other end is a mechanical chassis 17 ) Is caught by a spring support pin (97). Then, the forward movement of the coil spring 95 by the spring force is applied to the stopper pin 98 disposed between the pair of linear guide shafts 94a and 94b and fixed to the mechanical chassis 17. It is limited by. In addition, the amount of movement toward which the rotary motion actuator 51 is spaced apart from the spindle motor 12 is limited by the stopper shaft 69 disposed on the rear side and fixed to the mechanical chassis 17. .

In addition, a pair of positioning pins 80, 80 and holder stoppers 81b, 81b are provided on both front sides of the mechanical chassis 17, and similarly, a pair of cartridges are supported on both sides of the intermediate part. Pins 81a and 81a are provided. The positioning pin 80 and the cartridge support pin 81a position the disk cartridge 1 at a predetermined position to support the two, and the two support pins 81a are provided with the head insertion openings (the disk casings 2). While supporting both sides of the 7) side from below, the positioning holes 14a and 14b of the disc cartridge 1 are respectively inserted into the two positioning pins 80, thereby Positioning in the planar direction and in the vertical direction can be made. In addition, the two holder stoppers 81b have a predetermined amount higher than that of the mechanical chassis 17 by the cartridge holder 16 in a state where the disc cartridge 1 is not inserted into the cartridge holder 16. It is an over-insertion prevention member for the cartridge holder 16 for preventing from entering.

The disk drive mechanism 30, the shutter opening mechanism 40, the information recording / reproducing mechanism 50, and the disk loading mechanism 70 constituted as described above are incorporated. That is, as shown in Fig. 2, the left and right support brackets 19 insert the cartridge holder 16 into the mechanical chassis 17 and support the rear end of the cartridge holder 16 so as to be rotatable. To the desired position. Accordingly, the cartridge holder 16 is supported to be tiltable in the vertical direction with respect to the mechanical chassis 17, and the cartridge holder 16 is disposed above the spindle motor 12 fixed to the mechanical chassis 17. The cartridge holding portion of the corresponds.

As described above, the disc recording / reproducing apparatus of the present embodiment is configured.

[4] operation of the disc recording and reproducing apparatus

Next, the operation of the disc recording / reproducing apparatus configured as described above will be described.

(4-1) Initial state of disc cartridge insertion

As shown in Figs. 2 and 4, in the state where the front part of the cartridge holder 16 is lifted up and popped up, the cartridge insertion opening 18 is opened to allow the disc cartridge 1 to be inserted.

From this state, as shown in Fig. 15, the disc cartridge 1 is pressed into the cartridge insertion port 18 from the offset arc portion 6 side. At this time, as for the shutter release lever 41 of the shutter opening mechanism 40 provided in the side part of the cartridge holder 16, the front-end | tip part of the input piece 41b enters into the opening part 23b by the spring force of the coil spring 42. It enters large and the acting piece 41c enters the opening part 23a small as a reaction. And the contact part 41d provided in the front-end | tip of the input piece 41b of the shutter release lever 41 is located in front of the movement trace of the guide groove 10 provided in the side part part of the cartridge holder 16. As shown in FIG.

At this time, if the operator accidentally inserts the disc cartridge 1 upside down, the shutter release lever 41 is provided on the side plate 16b on which the shutter release mechanism 40 of the cartridge holder 16 is provided. ) Is installed in the vicinity of the pin supporting pieces 43a and 43b so as to be able to swing, so that the erroneous insertion prevention convex portion 26 raised inside is provided with a cartridge casing 2 Is contacted with the corner portion of the offset arc 6 on the side 2d without the guide groove 10. As a result, since the insertion of the disk cartridge 1 or more is prevented, the misinsertion of the disk cartridge 1 can be known in the middle of the insertion operation.

In this misinsertion state, the disc cartridge 1 is taken out, reversed up and down, and inserted again. Then, when the disc cartridge 1 is inserted up and down, the misinsertion prevention convex portion 26 is moved to the cartridge casing even after the offset arc 6 reaches the position of the misinsertion prevention convex portion 26. Since it enters into the guide groove 10 of 2), the insertion operation | movement of the disc cartridge 1 becomes possible further.

(4-2) The disc cartridge before shutter release

Next, as shown in FIG. 16, when the disc cartridge 1 is pushed deeply and inserted, the contact portion 41d of the shutter release lever 41, which is largely inserted into the cartridge holder 16, is an introduction portion of the guide groove 10. As shown in FIG. In contact with 10c, it is pressed against the inclined surface of this introduction part 10c, and the shutter release lever 41 is rotated clockwise in the same figure against the biasing force of the coil spring 42. As shown in FIG. As a result, the contact portion 41d of the shutter release lever 41 enters into the wide portion 10a of the guide groove 10, and at the same time, the acting piece 41c of the shutter release lever 41 moves to the guide groove 10. It enters into the operation part 10d. Then, the operation piece 41c is guided to the inclined surface 10e of the upper or lower portion and guided to the narrow width portion 10b, and the operation of the shutter member 4 which enters the inside and is located at the front side of the narrow width portion 10b. It contacts the hook 4f.

(4-3) Status after opening the disc cartridge shutter

In addition, as shown in Fig. 17, when the disc cartridge 1 is further pressed and inserted to a predetermined position, the movement of the disc cartridge 1 is limited by the stopper pieces 22a and 22b on the left and right sides of the cartridge holder 16. The hard disk HD accommodated in the disk housing chamber 3 corresponds to the upper side of the spindle motor 12 of the disk drive mechanism 30.

At this time, the operation hook 4f of the shutter member 4 is pressed by the acting piece 41c of the shutter release lever 41 of the shutter opening mechanism 40 to the rear of the narrow portion 10b of the guide groove 10. When it moves to the edge part, the shutter member 4 rotates clockwise in FIG. 17 centering on the support point axis | shaft 2f. As a result, since the shutter plate 4a and the core opening and closing plate 4b of the shutter member 4 move in the same direction, the head insertion opening 7 and the core opening and closing which are closed by the shutter plate 4a until then. The center core hole 9 closed by the plate 4b is opened. Thus, the insertion operation of the disc cartridge 1 to the cartridge holder 16 is completed.

(4-4) Initial state of hard disk loading

Next, in the state as shown in Figs. 2 and 4, the front part of the cartridge holder 16, from which the front part protrudes, is pressed against the biasing force of the pop-up spring 78 from the mechanical chassis 17. As shown in Figs. . As a result, the cartridge holder 16 is inserted into the mechanical chassis 17, and two positions of the mechanical chassis 17 are inserted into the left and right pair of positioning holes 14a and 14b of the disc cartridge 1, respectively. The crystal pins 80 are guided to their cones 80a and engaged, respectively, and the disc casing 2 is loaded on the two cartridge support pins 81a.

As a result, the disc cartridge 1 supports the front side portion by the two cartridge support pins 81a, and at the same time supports the rear side portion by the two positioning pins 80, and thus four corners. By supporting from the bottom, positioning in the height direction and positioning in the horizontal direction of the disc cartridge 1 can be simultaneously performed.

At this time, the center core 11 of the hard disk HD accommodated in the disc cartridge 1 is attracted by the magnet of the spindle motor 12. Accordingly, the hard disk HD is attracted to the spindle motor 12 and integrally formed in the rotational direction. By driving the spindle motor 12, the hard disk HD is integrally rotated and driven.

In addition, as shown in Fig. 18, the cartridge holder 16 is press-fitted into the mechanical chassis 17, thereby operating manually or by operation of an operation switch provided to cooperate with this press-in operation. The drive motor 71 is rotationally driven by the start switch operation. By the start of this drive motor 71, the rotational force of the worm 72 fixed to the rotary shaft is input from the worm wheel 73 meshed with the input gear 73a, the intermediate gear 82a, and the output gear 82b. Is transmitted from the gear portion 74a to the cam gear 74.

At this time, the rotational motion actuator 51 of the information recording and reproducing mechanism 50 is extruded outward from the disc cartridge 1 by the action of the cam gear 74, and the mounting plates 57a and 57b are provided. The upper and lower sliders 52a and 52b attached to the distal end of the rotary motion actuator 51 curved like a dog leg type correspond to the outside of the head insertion opening 7 opened by the retraction operation of the shutter plate 4a. It is becoming.

That is, the outer end of the cam protrusion 55b provided on the rotary motion arm 55 of the rotary motion actuator 51 is in contact with the cam circumferential surface 74b of the cam gear 74 and the rotary motion arm 55 Since the stopper shaft 69 is located outside, the rotary motion actuator 51 is locked by being pinched by these stoppers. In addition, since the lamp 91 is tensioned toward the spindle motor 12 by the spring force of the coil spring 95, and the lamp arm 92 enters between the upper and lower suspensions 58a and 58b, as shown in FIG. The convex portions 61a and 61b of the suspensions 58a and 58b extend in the direction in which the sliders 52a and 52b are spaced apart from each other. And since the lamp 91 is in contact with the stopper pin 98, movement to the front surface side is prevented by this.

Moreover, the cam pin 84 couple | bonded with the cam groove 74c of the cam gear 74 is located in the outermost peripheral part of the cam groove 74c. Therefore, the eject lever 76 having the cam pin 84 at the tip of one arm is in a posture as shown in Fig. 18, and the pressing portion 76a provided at the other tip is a holder lock mechanism. Is spaced apart from the pressure receiving portion 77b of the holder lock member 77. And the cartridge press pin 87 provided in the front-end | tip part of the eject arm 86 integrated with the eject lever 76 is located in the outer back of the disk cartridge 1. As shown in FIG.

(4-5) Status during hard disk drive loading

As shown in Fig. 19, when the cam gear 74 is slightly rotated clockwise by the drive of the drive motor 71, the spring force of the coil spring 95 is applied to the rotary motion actuator 51 by the ramp 91 Since it is always input from the pressurizing part 93 of (), the counterclockwise biasing force acts on the rotary motion actuator 51 by the spring force of this coil spring 95. As a result, the cam protrusion 55b of the rotary motion arm 55 winds around the cam action end 74e provided in one end of the cam circumferential surface 74b of the cam gear 74 and enters the cam relief portion 74d. , The rotary motion actuator 51 is rotated counterclockwise.

As a result, the upper and lower suspensions 58a and 58b provided at the distal end portion of the dog leg-type rotary motion actuator 51 enter the head insertion opening 7 of the disc cartridge 1, and the upper and lower sliders 52a attached to the distal end portion thereof. 52b approaches the outer periphery of the hard disk HD. At this time, since the cam pin 84 of the eject lever 76 is located at the outermost periphery similarly to the cam groove 74c of the cam gear 74, the cam pin 84 of the eject lever 76 and the eject arm 86 are at the same position. No change occurs.

In this case, the length (hereinafter referred to as "slide rotation radius") from the rotational movement center O of the rotational movement arm 55 to the center of the sliders 52a and 52b is referred to as SR and rotational movement of the rotational movement arm 55. When the length from the center O to the center of the convex portions 61a and 61b of the suspensions 58a and 58b (hereinafter referred to as the "convex rotational motion radius") is set to PR, the sliders 52a and 52b are the ramp arms ( The slider rotational motion radius SR is set larger than the convex rotational motion radius PR so as not to come into contact with 92) (SRPR). Therefore, since the sliders 52a and 52b do not interfere with the ramp arm 92 within the rotational movement range of the rotary motion actuator 51, the sliders 52a and 52b due to contact with the lamp 91 are provided. This can eliminate the risk of damage. In addition, since the upper and lower suspensions 58a and 58b are formed by cutting a part of the inner ribs 58a ₁ and 58b ₁ to provide a cutback, the portions of the ribs 58a ₁ , 58a ₂ , 58b ₁ and 58b ₂ . Without further concern, the strength of each suspension 58a, 58b can be reinforced with ribs and set to an appropriate one.

(4-6) Loading status of hard disk drive

By the rotational motion of the cam gear 74, as shown in Figs. 20 and 21, the cam protrusion 55b of the rotary motion arm 55 is completely inside the cam relief portion 74d of the cam gear 74. Upon entering, the rotary motion control of the rotary motion actuator 51 by this cam gear 74 is released, while automatic control by the voice coil motor composed of the drive coil 56 and the magnet 37 is started. Accordingly, the loading of the head to the hard disk HD is completed, the upper slider 52a is opposed to the upper surface of the hard disk HD, and the lower slider 52b is opposed to the lower surface.

As a result, the upper and lower sliders 52a and 52b are slightly lifted from the surface of the hard disk HD in accordance with the aerodynamic effect of the rotation of the hard disk HD, and the hard disk HD is in the injured state. The sliders 52a and 52b can be moved in the radial direction. Thereby, the magnetic head 8 provided in each slider 52a, 52b moves on the information recording surface of the hard disk HD, and the data signal previously recorded on the information recording surface by this magnetic head 8 is carried out. Is read and information is reproduced, or information is newly recorded to record a data signal on the information recording surface.

In this case, the rotary motion actuator 51 of this embodiment has a dogleg shape, and the suspensions 58a, 58b and the mounting plates 57a, 57b on the tip end side thereof are substantially perpendicular to the head insertion opening 7. Since it enters and exits, the width | variety of the head insertion opening 7 can be made small. Therefore, the head insertion port 7 which is most likely to invade the dust which may invade into the disc cartridge 1 is made as small as possible, so that the intrusion of dust can be reliably prevented or the invasion can be effectively suppressed. Since the disc cartridge 1 has a structure in which the offset arc portion 6 is provided at the tip end side thereof, the space in the mechanical chassis 17 can be effectively used as compared with the conventional rectangular disc cartridge. Can be.

(4-7) Unloading status of the hard disk drive (when the cartridge is ejected)

After the recording or reproducing of information, or at the time of recording or reproducing, if the command of ejecting the cartridge is instructed by the operation of the eject operation button (not shown), the speed of the voice coil motor of the rotary motion actuator 51 By the control, the tip end side of the rotary motion arm 55 moves to the outer circumferential side of the hard disk HD, and as shown in Figs. 21 and 9, the suspensions 58a and 58b are mounted on the ramp arm 92 and frozen. Load. Thereafter, the drive monitor 71 is driven to rotate in the reverse direction, so that the cam gear 74 starts to rotate in reverse with the disc loading.

As a result, as shown in Fig. 23, as the cam gear 74 is rotated in the counterclockwise direction, the cam action end 74e of the cam gear 74 is the cam protrusion 55b of the rotary motion arm 55. ) Is rotated counterclockwise, and the rotary motion actuator 51 is rotated clockwise about the rotary motion axis 54. As a result, since the cam protrusion 55b rides on the cam circumferential surface 74b of the cam gear 74, the rotary motion actuator 51 changes to the original posture shown in Fig. 23 (see Fig. 18). At the same time, since the pressing part 93 of the lamp 91 is pressed to the back side by the counterclockwise rotation of the rotary motion actuator 51, the lamp 91 is opposed to the biasing force of the coil spring 95. It moves backward to the back side and locks in an unloading state.

In this case, the length (hereinafter referred to as "arm length") from the rotational movement center O of the rotary motion arm 55 to the tip ends of the sliders 52a and 52b is SL and the rotational movement center of the rotary motion arm 55. When the length from O to the contact portion between the cam working end 74e and the cam protrusion 55b (hereinafter referred to as the “pressing length”) is PL, the rotary motion arm 55 is retracted to operate the sliders 52a and 52b. ) At the head retracted position, the pressing length PL from the acting position of the cam working end 74e to press the cam projection 55b to the rotational movement center O becomes longer than 1/3 of the arm length SL. Therefore, since the rotary motion arm 55 can be rotated by pressing a position farther than 1/3 of the arm length SL, the enlargement ratio of the displacement amount of the arm by the cam is made small, and the rotary motion control is precisely controlled. I can do it. That is, in this type of disk storage device of the related art, the pressing length is 1/5 to 1/10 of the arm length, and the arm side is greatly displaced by the minute displacement on the cam side, thereby providing precision for rotational motion control. It was difficult.

Moreover, in the voice coil motor which performs the rotational motion control of the rotary motion arm 55 in this way, the part which overlaps with the magnet 37 of the drive coil 56, ie, the side edge part 56a of right and left of the drive coil 56, Torque is generated at 56b). As shown in Fig. 20, the side edge portions 56a and 56b of the drive coil 56 generate a large torque when they are located inside the N pole and the S pole of the magnet 37, but either side When the edge portions 56a and 56b hang on the center line MC of the magnet 37 (the boundary line between the N pole and the S pole magnetic force), the torque is drastically lowered, which adversely affects the performance of the rotational motion control.

On the other hand, according to this embodiment, as shown in Fig. 22, when the sliders 52a and 52b are on the outer circumferential portion of the hard disk HD, either side edges 56a and 56b of the drive coils 56 Since neither is caught by the center line MC of the magnet 37, it is possible to reliably transmit the torque without causing a torque drop and to rotate the rotary motion arm 55 by only a predetermined amount. Then, both side edge portions 56a and 56b of the drive coil 56 move without crossing the centerline MC of the magnet 37, and as shown in Fig. 21, the sliders 52a and 52b move to the hard disk. Even when moving to the innermost circumference of the HD, neither of the side edge portions 56a and 56b is caught by the center line MC, so that no torque decrease occurs. Therefore, according to this rotary motion actuator 51, in the area | region where automatic control by a voice coil motor is needed, the rotary motion arm 55 can be rotated precisely and precisely, without generating a torque fall in the whole range. .

At this time, when returning to the state of FIG. 18 via FIG. 19 or going to the state of FIG. 23 via the state of FIG. 22, in any case, one side edge portion 56a of the drive coil 56 is the center line MC. 24, the one side edge portion 56a moves over the center line MC and moves to the same side of the other side edge portion 56b as the other side, and as shown in Fig. 24, the rotary motion arm 55 and the ramp ( When 91 is completely retracted, the voice coil motor generates no torque at all. However, since the movement to the excitation is performed by the cam of the cam gear 74, the torque drop may be a problem. none.

At the time of retraction of the rotary motion arm 55, the lamp 91 is retracted by the retraction operation of the rotary motion arm 55, and the lamp arm 92 is discharged from the head insertion port 7. In this case, since two linear guide shafts 94a and 94b supported in parallel with the mechanical chassis 17 are inserted through the insertion holes 91b and 91c of the lamp 91 so as to be slidable. Both are guided by the linear guide shafts 94a and 94b so that the ramp 91 retreats linearly. In addition, the retraction operation | movement of the lamp 91 can be set as the structure which moves two guide axes in circular arc shape as a curved axis.

Next, since the cam pin 84 of the eject lever 76 moves from the outermost circumference of the cam groove 74c of the cam gear 74 to the innermost circumference, the eject lever 76 is centered on the support point shaft 85. The clockwise rotation is performed. Accordingly, on the one hand, the pressing portion 76a of the eject lever 76 contacts the pressure receiving portion 77b of the holder lock member 77 of the holder lock mechanism, and against the spring force of the coil spring 88, the holder The lock member 77 is rotated in the counterclockwise direction.

As a result, the locking hook 77a of the holder lock member 77 is separated from the engaging pin 24 of the cartridge holder 16, and the cartridge holder 16 is held horizontally with respect to the mechanical chassis 17. The locked state is released. As a result, the front side of the cartridge holder 16 is lifted by the spring force of the pop-up spring 78, while the small diameter portion 20a of the holder reinforcement shaft 20 whose rising amount is hypothesized on the cartridge holder 16. As shown in FIG. Is restricted by the pop-up suppressing plate 79 to which the hook portion 79c is coupled, and as shown in Figs. 2 and 4, a popup of a predetermined amount or more is prevented and returned to the original state. By appropriately changing the length of the hook portion 79c of the pop-up suppressing plate 79, the tilting amount of the cartridge holder 16 can be set arbitrarily.

At the same time, the ejection arm 86 is interlocked with the eject lever 76 to rotate in the same direction, so that the cartridge pressing pin 87 provided at the distal end thereof is moved from the rear side to the offset arc portion 6 of the disc cartridge 1. Contact. Then, the disc cartridge 1, which is biased toward the holding plates 16d and 16e of the cartridge holder 16 by a pair of left and right pressing plate springs 25, is pushed forward by the biasing force of the eject arm 86. do. As a result, as shown in Fig. 24, the holding groove portion 2h side of the disc cartridge 1 protrudes from the cartridge insertion port 18 by a predetermined amount. Therefore, the disk cartridge 1 can be easily taken out from the cartridge holder 16 by holding and holding this holding | gripping groove part 2h.

At this time, if, for example, a failure of the apparatus or a user presses the disc cartridge 1 by hand to prevent the ejection operation, a large resistance force is applied to the eject arm 86 which tries to extrude the disc cartridge 1. Although the eject arm 86 is formed of a plate-like spring material, the resistance force is absorbed by the elastic deformation. Therefore, failure of the apparatus due to excessive ejection operation of the disc cartridge 1 can be prevented, and smooth ejection operation can be ensured. In addition, since the pop-up operation of the cartridge holder 16 and the ejection operation of the disc cartridge 1 are performed by one ejection member in which the eject lever 76 and the eject arm 86 are integrated, this kind of operation is performed. The operation can be performed simply and reliably, and the reliability of the operation can be improved.

Next, an embodiment example of a disc recording / reproducing apparatus showing the second embodiment as the disc storage apparatus of the present invention will be described with reference to FIGS. This second embodiment is applied to a loaded elevator type disc recording / reproducing apparatus in which the disc cartridge is inserted into the slot-in manner so that the cartridge holder holding the inserted disc cartridge is lifted and the disc cartridge is mounted. will be.

The disc recording and reproducing apparatus 200 has a disc driving mechanism, a shutter opening mechanism, an information recording and reproducing mechanism, and a disc cartridge mounting mechanism similarly to the first embodiment, but has a disc driving mechanism 30 and a shutter opening mechanism 40. ) And the information recording and reproducing mechanism 50 are the same as in the first embodiment, and the same reference numerals are given to the main components of these mechanisms 30, 40 and 50, and the description thereof is omitted, and the disc loading mechanism 201 is omitted. ) Will be described in detail.

The disc cartridge mounting mechanism 201 of the disc recording / reproducing apparatus 200 is, as shown in Figs. 26 to 31, a cartridge holder 203 supported by the mechanical chassis 202 so that it can be lifted up and down. ), A slide member 204 which is supported so as to be movable relative to the cartridge holder 203 in the front-rear direction and the vertical direction, and a holder lock member 205 which locks the cartridge holder 203 at the time of loading. Equipped with. The slide member 204 is configured to be capable of linearly moving forward and backward in the front-rear direction with respect to the mechanical chassis 202.

The mechanical chassis 202 is composed of a flat casing having a U-shaped cross section opening on both top and front surfaces, and a front panel 207 having a cartridge inserting hole 206 is attached to the front surface thereof. On the front face of this front panel 207, as shown in Fig. 25, a power button 208 for switching the power on and off and an eject button 209 for discharging the disc cartridge 1 are provided. . In the mechanical chassis 202 having such a configuration, the disk drive mechanism 30 and the information recording and reproducing mechanism 50 are disposed almost in the same manner as in the first embodiment described above.

As shown in Figs. 26 to 31, the cartridge holder 203 has an upper face plate 203a having substantially the same size as the plane of the disc cartridge 1, and side surfaces continuous to both the left and right sides of the upper face plate 203a. The disc cartridge 1 is hold | maintained in the space part enclosed with the board | plate 203b and the holding | maintenance plate 203c which was bent inward continuously in each lower part of both side plates 203b, The insertion section 203d is set. One side plate 203b of this cartridge holder 203 is provided with a shutter opening mechanism 40 as in the first embodiment described above.

For this reason, the opening part 23a, 23b is provided in the one side board 203b by space | separating a predetermined distance in the front-back direction, and a pair of pin support is carried out by bending a part between both opening parts 23a, 23b up and down. Pieces 43a and 43b are provided. Then, the shutter release lever 41 is interposed between the pin support pieces 43a and 43b, and the shaft pin 44 is penetrated therethrough, so that the shutter release lever 41 can swing to the cartridge holder 203. Supported.

In addition, both side plates 203b and 203c of the cartridge holder 203 have a pair of left and right vertical guide pins 210 disposed in the middle portion in the front-rear direction, and two pairs of the left-right side disposed at both ends in the front-rear direction The cam pins 211 are provided so as to protrude outward, respectively. The pair of vertical guide pins 210 are slidably coupled to the vertical guide grooves 212 extending in the vertical direction provided in the mechanical chassis 202, respectively. And stopper pieces 22a and 22b for preventing the insertion of the disc cartridge 1 more than the predetermined amount are provided in the rear end part of both side plates 203b and 203c of the cartridge holder 203. As shown in FIG.

The slide member 204 is attached to the cartridge holder 203 from the upper side so as to be relatively movable. The slide member 204 has an upper frame portion 204a opposite the upper surface of the cartridge holder 203 and a side portion continuous to both sides of the upper frame portion 204a and opposite to the side of the cartridge holder 203. 204b and 204c, an eject button attaching portion 204d to which an eject button 209 is attached is provided at the front of the upper frame portion 204a, and one side portion 204b has a horizontal guide projecting outward. The pin 213 is provided. The horizontal guide pin 213 is slidably coupled to the horizontal guide groove 214 extending in the front-rear direction provided in the mechanical chassis 202, thereby sliding to the mechanical chassis 202. Straightness to the front-back direction of the member 204 is ensured.

The cartridge holder 203 and the slide member 204 are relatively movable in the direction orthogonal to each other via the holder elevating mechanism 220. The holder elevating mechanism 220 controls the horizontal movement of the cartridge holder 203 in the horizontal direction to move up and down only in the vertical direction, and the horizontal movement of the slide member 204 in the vertical direction. It consists of the horizontal operation means which moves only in the direction, and the direction conversion means which converts the horizontal operation of the slide member 204 into the lifting operation of the cartridge holder 203. As shown in FIG.

The elevating operation means of the holder elevating mechanism 220 is constituted by the combination of the vertical guide pin 210 and the vertical guide groove 212 described above, and the horizontal operation means is the horizontal guide pin 213 and the horizontal guide groove ( 214). And the direction change means of the holder elevating mechanism 220 is comprised by the combination of the cam pin 211 provided in the cartridge holder 203, and the cam part 221 to which this cam pin 211 is slidably coupled. It is. The cam part 221 is provided in the both side part 204b, 204c of the slide member 204 corresponding to the cam pin 211, and is inclined guide groove 221a formed by inclining substantially 45 degree | times, and this inclination guide. The groove 221a has a horizontal support groove 221b which is formed continuously at one end.

The horizontal support groove 221b of the cam portion 221 is formed to extend in the front-rear direction on the upper frame portion 204a side of each side portion 204b, 204c of the slide member 204, and the horizontal support groove ( The inclined guide groove 221a extends inclined downward and continues to the rear end of 221b, and is opened at the lower ends of the side portions 204b and 204c. This direction changing means is provided in four positions of the front and back two positions of both side plates 203b and 203c of the cartridge holder 203.

In addition, long holes 222 extending in the front-rear direction are provided on both sides of the upper frame part 204a of the slide member 204, and a coil spring 223 is disposed in the long holes 222. . The front end of the coil spring 223 is caught by the spring support piece 224 standing up on the cartridge holder 203, and the rear end thereof is caught by the spring support hole provided in the slide member 204. By the spring force of this coil spring 223, the slide member 204 is always biased toward the front side, that is, the cartridge insertion port 206 side. And the movement to the front side of this slide member 204 is restrict | limited by the holder lock member 205 attached to the rear part of the cartridge holder 203 so that rotation movement is possible.

As shown in Figs. 26 and 28, the holder lock member 205 is almost fan-shaped, and the major part of the fan is the upper surface plate of the cartridge holder 203 by the rotational shaft 225. As shown in Figs. It is axially supported by 203a, and is attached so that rotational movement is possible in the state which the end of the fan turned to the depth side. The fan-shaped portion of the holder lock member 205 has a state in which the pressure receiving portion 205a provided on one side for detecting the insertion state of the disc cartridge 1 and the slide member 204 retreat backward by a predetermined amount. The locking part 205b provided in the other side to hold | maintain, The lock part 205c which hold | maintains the lock state of the slide member 204 provided between this press part 205b and the pressure accommodating part 205a, and this holder lock The spring support part 205d which one spring piece of the torsion spring 226 which biases the member 205 inwards is included. The coil portion of the torsion spring 226 is coupled to the spring support piece 227a, which is erected on the upper face plate 203a of the cartridge holder 203, and the other spring piece is similarly mounted on the upper face plate 203a. It is caught by piece 227b.

The pressure receiving portion 205a of the holder lock member 205 is configured to be positioned on the movement trajectory of the disc cartridge 1 of the disc cartridge mounting portion, and thus the upper face plate 203a of the cartridge holder 203 An arcuate cutout 228 is provided to allow the intrusion of the pressure receiving portion 205a. That is, in the state where the holder lock member 205 has entered inward by the spring force of the torsion spring 226, the pressure receiving portion 205a enters largely into the cutout 228 and immediately before the insertion of the disc cartridge 1 is completed. It is comprised so that it may contact the offset circular-circle part 6 in the back.

In addition, the leading edge of the locking portion 205b of the holder lock member 205 is formed in an arc shape, and the locking portion 205c is formed by lowering the inner side of the locking portion 205b to provide a step. . And the stopper piece 229 is provided in the slide member 204 corresponding to these locking parts 205b and the lock part 205c. By positioning the slide member 204, the stopper piece 229 is positioned so that the slide member 204 is retracted inward when the stopper piece 229 is lifted up on the engaging portion 205b as shown in FIG. As shown in Fig. 28, when the stopper piece 229 climbs on the locking portion 205b and enters the lock portion 205c, the slide member 204 is advanced to the front side.

The operation of the disc recording / reproducing apparatus 200 having such a configuration is, for example, as follows. First, as shown in Figs. 25 to 27, the cartridge insertion port 206 of the disc recording / reproducing apparatus 200 is directed toward the offset arc portion 6 side of the disc cartridge 1, and the disc cartridge 1 is pressed. ) Is inserted into the cartridge insertion hole (206). At this time, when the disc cartridge 1 is inserted to a predetermined position, the offset arc portion 6 of the disc cartridge 1 contacts the pressure receiving portion 205a of the holder lock member 205, but displaces it inwards. When further inserted against the spring force of the torsion spring 226, the holder lock member 205 rotates clockwise in FIG. 26 about the rotational motion axis 225 by the pressing force of the disc cartridge 1. Then, by completely inserting the disc cartridge 1 into the disc recording / reproducing apparatus 200, the holder lock member 205 changes to the state shown in FIG.

In this case, the outer circumferential edge of the locking portion 205b is in sliding contact with the inner circumferential surface of the stopper piece 229 of the slide member 204 due to the rotational movement of the holder lock member 205, but because the radius of curvature is constant, the coil The slide member 204 does not move forward also by the spring force of the spring 223, and the original position is maintained. Thereafter, when the disc cartridge 1 is completely inserted to a predetermined position, the inner circumferential edge of the locking portion 205b reaches the outer circumference of the stopper piece 229, and the locked state of the slide member 204 is released.

At this time, the one cartridge holder 203 connected by the coil spring 223 is supported by the mechanical chassis 202 so as to be movable only in the up and down direction, while the other slide member 204 is made by Mikney. Since the curl chassis 202 is supported so as to be movable only in the front-back direction, only the slide member 204 is moved forward by the spring force of this coil spring 223, and is held by the cartridge holder 203. The disc cartridge 1 is held in the position at the time of mounting. This mounting position is directly above the spindle motor 12 of the disk drive mechanism 30 disposed on the mechanical chassis 202.

In this case, when the slide member 204 is moved horizontally forward, the cam pin 211 which was located in the horizontal support groove 221b of the cam part 221 up to that time enters in the inclined guide groove 221a, and this slope is inclined. It is guided to the guide groove 221a and pushed down to the lower side. At this time, the cartridge holder 203 with respect to the slide member 204 is connected by the direction change mechanism (composed of the cam pin 211 and the cam part 221) provided in the four positions so that relative movement is possible horizontally. While the four directions change direction mechanisms operate in the same manner at the same time, the cartridge holder 203 is supported by the vertical guide groove 212 of the main chassis 202 so as to be movable only in the vertical direction. Since the vertical guide pin 210 is guided to the vertical guide groove 212 and moved to the lower side, the cartridge holder 203 is pushed down immediately.

As a result, the cartridge holder 203 moves from the upper position at the time of insertion of the disc cartridge 1 shown in FIG. 30 to the lower position in the loading state shown in FIG. As a result, the turntable portion of the spindle motor 12 is inserted into the center core hole 9 of the disc cartridge 1 opened by the rotational movement of the shutter release lever 41 of the shutter opening mechanism 40. The center core 11 is attracted by the magnet embedded in the table part, and the hard disk HD is mounted to the spindle motor 12, and the disk cartridge mounting operation is completed.

Thereafter, the spindle motor 12 of the disk drive mechanism 30 is driven to rotate the hard disk HD, and at the same time, the rotary motion actuator 51 of the information recording and reproducing mechanism 50 is driven to the voice coil motor. By automatic control and reading or recording the data signal with the magnetic head 8 of the upper and lower sliders 52a and 52b opposite to the upper and lower information recording surfaces of the hard disk HD, thereby providing information as in the first embodiment described above. Recording or playback is performed.

When the disc cartridge 1 is ejected after the recording or reproducing operation of this information is finished, the eject button 209 is pressed. In this case, when the eject button 209 is press-fitted against the biasing force of the coil spring 223 by a predetermined amount, the eject button 209 is mounted on the eject button attaching portion 204d and integrally with the slide member 204. Since it is comprised, the slide member 204 retreats inwardly. At this time, the stopper piece 229 of the slide member 204 coupled to the lock portion 205c of the holder lock member 205 is guided to the inner edge of the locking portion 205b and moved backward.

At this time, a reverse operation is performed between the cartridge holder 203 and the slide member 204 as described above during the loading, and the slide member 204 moves horizontally backwards, while being connected via the holder lifting mechanism 220. The cartridge holder 203 is guided to the vertical guide groove 212 of the mechanical chassis 202 and ascends to an upper position, and changes from the state shown in FIG. 31 to the state shown in FIG. Then, when the stopper piece 229 of the slide member 204 reaches the distal end of the locking portion 205b, the lock of the holder lock member 205 is released.

Accordingly, the holder lock member 205 is rotated in the counterclockwise direction in Fig. 28 by the spring force of the torsion spring 226, and the pressure receiving portion 205a of the holder lock member 205 is cartridged. It enters into the notch 228 of the holder 203 and contacts the offset arc 6 of the disc cartridge 1. As a result, the spring force of the torsion spring 226 is applied to the disk cartridge 1 from the pressure receiving portion 205a, and the disk cartridge 1 is thus extruded to the front side, and the disk cartridge (from the cartridge insertion opening 206) The edge part of the holding side of 1) protrudes. By taking out the protruding end of the disc cartridge 1, the disc cartridge 1 can be taken out from the disc recording / reproducing apparatus 200.

The same effect as in the above-described first embodiment can also be obtained by the disc recording / reproducing apparatus 200 of the second embodiment having such a configuration.

As described above, the present invention is not limited to the above embodiment, and for example, in the above embodiment, an apparatus for recording and / or reproducing information by the upper and lower magnetic heads on both the upper and lower sides of the hard disk will be described. However, the present invention can be applied to an apparatus for recording and / or reproducing information on only one surface of the top or bottom of the hard disk. In addition, in the above embodiment, an example has been described in which the disc recording and reproducing apparatus capable of reproducing information previously recorded on the hard disk HD and recording new information can be used. However, only one of recording or reproducing information can be performed. It can also be applied to a disk storage device. Thus, this invention is not limited to the above-mentioned embodiment, It can change in various ways in the range which does not deviate from the meaning.

As described above, according to the disk storage device of the present invention, since the shutter opening means for operating the cartridge body side as a trigger when the disk cartridge is inserted to open the shutter is provided in the cartridge holder, the disc cartridge is inserted / ejected. At the same time, the rotary motion actuator can be completely retracted to the outside of the disc cartridge, the number of parts can be reduced, the cost can be reduced, the shutter opening and closing operation can be performed reliably, and the disc cartridge has high reliability. The effect of reducing the size and thickness of the disk drive mechanism and the apparatus as a whole, which read / write information using the disk-shaped recording medium accommodated in a rotatable manner can be obtained.

Claims (29)

The disk apparatus includes a chassis, loading means for removably loading a disk cartridge installed in the chassis and rotatably housed in a disk-type recording medium, and rotating the disk-type recording medium in the loaded disk cartridge. A head moving means supported by a rotation drive means, a head means for accessing the disk-shaped recording medium which is rotationally driven, a rotation support member provided in the chassis, and the head means loaded at an end portion thereof, and the rotation support member. By means of rotating the head moving means and moving the head means to a desired position of the disc-shaped recording medium in the disc cartridge. Insert the head means into the disc cartridge only when approaching it, And the head means is evacuated from the cartridge when not in use. The said loading means is a cartridge holder which has an opening part and accommodates the said disc cartridge inserted in the said opening part, and is provided in the said chassis, and rotationally supports the edge part of the said cartridge holder facing the opening part. And rotation means for supporting the cartridge holder at positions where the opening of the cartridge holder is adjacent to the chassis, and locking release means for releasing the locking means. Disk unit. The said head moving means has a refractive part, the 1st linear part which protrudes in a 1st direction from the said refracting part, and the 2nd linear part protruding in a 2nd direction from the said refracting part, A disc device, wherein the first straight portion is supported by the rotation supporting member, and the head means is provided near an end portion of the second straight portion. 3. A biasing means according to claim 2, wherein said biasing means shifts said opening side of said cartridge holder in a separation direction spaced apart from said chassis about the rotational support point of said rotation support means, and a direction in which said cartridge holder is spaced apart from said chassis. And a rotational motion regulating means for regulating the rotational motion not to exceed a predetermined angle. The lock according to claim 2, further comprising: an ejection arm rotatably supported in said chassis, said ejecting arm ejecting said disc cartridge from said cartridge holder, said locking release means interlocking with said ejecting arm to release lock of said locking means. A disk device, characterized in that. 3. The disk apparatus according to claim 2, wherein the disk apparatus has shutter opening means which is operated in contact with the disk cartridge inserted into the cartridge holder on the side of the cartridge holder. The said head moving means is an end part provided in the upper side and the lower side of the other end part of the said 1st linear part, respectively, and the base end part is respectively fixed to the said end, The two mounting plates which comprise the said refracting part, And two suspensions each having a proximal end fixed inside the other end of the two mounting plates and constituting the second straight portion. The disk apparatus according to claim 3, wherein each of the two suspensions has convex portions projecting inwardly. 5. The cartridge holder according to claim 4, wherein the cartridge holder comprises a substantially rectangular upper face plate, first and second side plates continuous to the first and second side surfaces of the upper face plate, and a lower portion of the first and second side plates. And a first and second retaining plate formed to be bent inwardly and continuously to the side, and connecting reinforcing means for mutually reinforcing said first and second side plates. 6. The disk apparatus according to claim 5, further comprising a cam means and a cam drive means for driving the cam means, wherein the eject arm is coupled to the cam means and is rotated. 6. The disk apparatus of claim 5, wherein the eject arm is formed of an elastic body. 7. The shutter opening means according to claim 6, wherein the shutter opening means comprises: a shutter arm having a refracting portion, a first straight portion protruding in the first direction from the refracting portion, and a second straight portion protruding in the second direction from the refracting portion; Rotation support means for supporting the refraction portion of the shutter opening means on the side of the cartridge holder so that one end of the first and second straight portions is always inserted into the cartridge holder, and the first straight line; A biasing means for biasing the shutter arm in a rotational direction into which the end of the portion is inserted into the cartridge holder, and the disc cartridge inserted from the opening contacting the end of the first straight portion and rotating the shutter opening means by rotating the shutter opening means. 2 Insert an end portion of the straight portion into the cartridge holder, and insert the end portion of the second straight portion into the disc cart. By contacting the shutter part magazine, a disk device, characterized in that for opening the shutter of the disk cartridge. 8. The disk apparatus according to claim 7, wherein the disk apparatus has an opening at substantially the center of the proximal end of the two suspensions. The disk apparatus according to claim 8, further comprising lamp means movable in a linear direction on the chassis, wherein the lamp means temporarily enlarges the interval between the two suspensions by contacting the convex portion. The disk apparatus according to claim 8, wherein the distance from the center of the rotation support member on which the head moving means is supported to the convex portion is shorter than the distance from the center of the rotation support member to the head means. 10. The disk apparatus according to claim 9, wherein the first side is provided with a convex portion for preventing misinsertion. 10. The rotational motion restricting means according to claim 9, wherein the rotational motion restricting means includes a main body, rotational support means for rotatably installing one end of the main body and the chassis, and a coupling means for coupling the other end of the main body and the connection reinforcing means. And the rotational motion restricting means engages the connection reinforcing means with the engaging means to regulate the cartridge holder. The disk apparatus according to claim 12, wherein the first straight portion has elasticity in the rotational direction of the rotation support means and performs positioning in the horizontal direction of the disk cartridge with respect to the cartridge holder. 13. The disk apparatus according to claim 12, wherein the second straight portion is elastic in the direction of the rotation axis of the rotation support means and follows the swing of the disk cartridge relative to the cartridge holder. 15. The apparatus according to claim 14, further comprising: biasing means for biasing said ramp means in the direction of said disc-shaped recording medium, said ramp means having a ramp arm that temporarily enlarges the interval of said two suspensions, And a pressing portion for pressing the head moving means in the direction of the disc-shaped recording medium. 21. The disk apparatus according to claim 20, wherein the lamp arm has an inclined portion so that the convex portion can be easily entered. An approach for inserting a disk cartridge into a disk device and accessing a disk-shaped recording medium in the disk cartridge with a head includes a method of detachably loading a disk cartridge installed in the chassis and in which a disk-type recording medium is rotatably housed. A loading step, a rotation driving step of rotationally driving the disc-shaped recording medium in the loaded disc cartridge, a head moving step supported by a rotation support member provided in the chassis and loaded with the head means near an end portion; A drive step of rotating the head moving means by the rotation support member only when the head means approaches the disc-shaped recording medium, and moving the head means into the disc cartridge; Having an access process for approaching the head means Approach to gong. 23. The method of claim 22, wherein the loading step includes an insertion step of inserting a disc cartridge from the opening portion into a cartridge holder having one end rotatably installed in the chassis and having an opening at the other end, and the disc cartridge being inserted. An approach method comprising a rotating step of rotating the cartridge holder in a direction adjacent to the chassis against a biasing force of the biasing means, and a locking step of locking the cartridge holder at a position adjacent to the chassis. 24. The disk apparatus of claim 23, wherein the disk apparatus comprises: a shutter opening means having a refracting portion, a first straight portion protruding in the first direction from the refracting portion, and a second straight portion protruding in the second direction from the refracting portion; Rotation support means for supporting the refraction portion of the shutter opening means on the side of the cartridge holder so that one end of the first and second straight portions is always inserted into the cartridge holder, and the first straight line; A biasing means for biasing the shutter opening means in a rotational direction in which an end portion of the portion is inserted into the cartridge holder, and the insertion step includes bringing the disc cartridge inserted from the opening into contact with the end portion of the first straight portion to open the shutter opening means. An end insertion step of inserting an end portion of the second straight portion into the cartridge holder by rotating the rod; And a shutter opening step of opening the shutter of the disk cartridge by bringing the end of the second straight portion into contact with the shutter opening of the disk cartridge. The said disc cartridge has the guide groove of the longitudinal direction in the side surface, and the said shutter opening part in the inside of the said guide groove, The said edge part insertion process makes the edge part of a said 1st linear part into the said guide groove | channel And the shutter opening step causes the end portion of the second straight portion to contact the shutter opening portion. A head evacuation method for evacuating a head from a disk-shaped recording medium in a disk cartridge inserted into a disk apparatus is supported by a rotating member provided in the chassis, and rotates the head moving means loaded with a head near an end thereof, A head moving step of moving from the inside of the disc cartridge to the outside of the disc cartridge; a unlocking step of releasing a lock of the cartridge holder whose one end is rotatably installed in the chassis and the other end is locked near the chassis; A rotational movement step of rotating the cartridge holder in a direction in which the other end of the cartridge holder is spaced apart from the chassis, and rotation for regulating rotation so that the cartridge holder does not rotate more than a predetermined angle in a rotational direction spaced from the chassis. Characterized by having a regulatory process Head evacuation method. 27. The head evacuation method according to claim 26, wherein the head moving step moves the head means from the inside of the disc cartridge to the outside of the disc cartridge by rotationally driving the cam means coupled with the head moving means. 28. The head evacuation method as set forth in claim 27, wherein said lock release step unlocks said cartridge holder with said eject arm by rotationally driving said cam means engaged with an eject arm. The head evacuation method according to claim 23, further comprising a pressing step of pressing the disc cartridge in the discharge direction by the eject arm by rotationally driving the cam means engaged with the eject arm.