JPH0227583A - Disk driving device - Google Patents

Abstract

PURPOSE:To eliminate the unfavorable influence of an external vibration at the time of a recording and reproduction by holding a loading chassis without contacting with a slide plate when the loading chassis is positioned at a place from which recording and reproduction are possible for a disk. CONSTITUTION:A pickup base 12 is installed with a main chassis 10 through a dumper means, a loading chassis 14 being located at an operation position is prevented from a contact with a slide plate 16 movable to the main chassis 10 and supported by a cartridge to be supported with a positioning pin 34 attached on the pickup base 12. Consequently, the external vibration to act on the slide plate 16 is not transmitted to the loading chassis 14 and the pickup base 12 and the external vibration being transmitted to the main chassis 10 is prevented by the dumper means. Thus, the pickup base 12, disk and a pickup mechanism are not unfavorably influenced from the external vibration and prescribed recording and reproduction can be attained.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a disk drive device that performs recording and reproduction on and from a disk contained in a hard cartridge.

<Prior Art> In general, a disk drive device for performing recording and reproducing processing on a disk cartridge made of hard plastic or the like containing a recording medium such as a magnetic disk or a 70-tsupee disk has a base that forms the main body of the device. and,
A slide plate slidably attached to this;
It consists of a loading chassis that stores the disk cartridge. A pickup mechanism, spindle, etc. for recording and reproducing processing are placed on the base, and the loading chassis is in an operating position where recording and reproducing can be performed on the disc in the disc cartridge, and in a retracted state separated from the base. It is guided so that it can be raised and lowered to and from the retracted position. In order to raise and lower the side of the loading chassis in conjunction with the sliding operation of the slide plate, the guide roller of the disk cartridge housing is guided along the slope of the upright surface extending vertically from the side end of the slide member. There is something that has been done. That is, by pushing the slide plate, the guide roller rides on the slope, and the loading chassis is moved upward and ejected to the retracted position. Further, the slide plate is locked at the position where the loading chassis is in the retracted position. On the other hand, when the disk cartridge is stored in the loading chassis at this retracted position, this lock is released, the slide plate is moved back by the spring, and the loading chassis is moved down to the operating position to prepare for recording and reproducing processing.

<Problems to be Solved by the Invention> Particularly in a disk drive device that handles a disk cartridge that accommodates an optical disk, it is necessary to prevent external vibrations from being transmitted to the disk or the pickup mechanism, particularly the actuator section. Therefore, in order to eliminate external vibrations, a main chassis may be further provided, and the main body (base) of the apparatus may be attached to this main chassis via a damper. In this case, the eject operation section at the tip end of the slide plate is made to protrude forward from the opening of the front panel attached to the main chassis with a sufficient gap. Since the base of such a disk drive device is attached to the main chassis via a damper, external vibrations are not transmitted to the disk or pickup mechanism.

However, during recording/reproducing processing, that is, when the cartridge accommodating body is in the downward operating position, the eject operation section at the tip of the slide plate protrudes forward from the front panel in preparation for a subsequent ejection operation. At this time, the guide rollers on the sides of the loading chassis are in contact with the lower position of the inclined portion of the slide plate. Therefore, if a hand or an object comes into contact with the eject operation section during the recording/reproducing process, the vibrations are propagated to the base and eventually to the disk or pickup mechanism, which may interfere with the required recording/reproducing process.

Means and Effects for Solving the Problems> The present invention provides a disk drive device that eliminates the adverse effects of external vibrations on the disk and pickup mechanism during recording and reproduction, and enables necessary recording and reproduction processing to be performed smoothly. The purpose is to provide a structure for

To achieve this objective, in the disk drive device of the present invention, a loading chassis that stores a disk cartridge that is moved in conjunction with the movement of a slide plate is held in a non-contact manner with the slide plate when it reaches the operating position. Therefore, external vibrations acting on the slide plate are not transmitted to the disk or the pickup mechanism. The loading chassis is raised and lowered as the slide plate slides by an elevating means consisting of an engaging part provided on the loading chassis and an engaged part provided on the slide plate. A spring is biased in a direction that separates the portion from the engaged portion. Note that the loading chassis is supported by a cartridge positioned on the pickup base in the operating position. Therefore, since the pickup base is attached to the main chassis via the damper means, it will not receive external vibrations from the main chassis, and the loading chassis in the operating position will not receive vibrations from the slide plate. Therefore, the pickup base is not subjected to any external vibration during recording/reproduction processing.Embodiment A disk drive device according to a preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

This disk drive device performs recording and reproduction on a magneto-optical disk housed in a known hard cartridge, and mainly includes a main chassis IO, a pickup base 12 attached to the main chassis, and a It is comprised of a loading chassis 14 that is supported and accommodates a disk cartridge, and a slide plate 16 that raises and lowers the loading chassis as the disk cartridge is loaded and unloaded.

First, the main chassis 10, as shown in FIG.
It is a substantially rectangular plate-like body having a relatively large opening 18 for accommodating the lower part of the pickup base 12. The main chassis 10 has four side chassis 20a, 2
0b, 20c, and 20d are fixed with screws and extend vertically from each side end of the main chassis to form the side surface of the device. Ma I:
Guide pins 22a and 22b are installed on the main chassis 10 to guide the sliding movement of the slide plate 16 in the cartridge loading/unloading direction in cooperation with guides vW70a and 70b of the slide plate 16, which will be described later.

Disk cartridge loading/unloading side of main chassis IO (
A pickup base rotor means 30 is attached to the left side of FIG. 3). This pickup base rotor means 30 comprises an arm 32, a positioning pin 34 passing through one end of the arm, and a locking pin 36 attached to the arm 32 below the positioning pin. The shaft portion 34a of the pin and the enlarged portion 36a of the lock pin having a pentagonal cross section (FIGS. 18 to 20) both protrude upward from the arm 32 in FIG. The other end of the arm 32 is attached to a pin 38 against the vertical surface 24a of the L-mount fitting 24 screwed on the loading/unloading port side of the main chassis 10.
The spring 39 is pivotally connected to the positioning pin 38 and is configured to be rotatable on a vertical plane about the pin 38, while the spring 39 connects both ends of the spring 39 to the shaft 34a of the positioning pin and the hole 24b formed in the vertical plane 24a. Since the arm 32 is hung and wound around the pin 38, the free end of the arm 32 is always urged downward.

As shown in FIG. 4, a mechanism is mounted on the pickup base 12 to enable recording and reproduction of the disc housed inside the disc cartridge when the disc cartridge is completely loaded. , this recording and reproducing mechanism includes a spindle 40. which is inserted into the center opening of the disk. A motor 42 that rotates the spindle. Magnet 44 for adsorbing the disc. Objective lens 46
The actuator 52 irradiates a spot of laser light onto the recording/reproducing section of the disk through the actuator 52 and is configured to be guided by a guide member 48 and moved in parallel by a pair of linear motors 50 . Further, a pickup block 54 is attached to the rear end side of the pickup base 12 on which an optical system for emitting laser light to the objective lens 46 and necessary circuits (not shown) are mounted.

The pickup base 12 has a thickness necessary for mounting the recording/reproducing mechanism, and its lower portion is accommodated in the opening 18 of the main chassis IO. To attach the pickup base 12 to the main chassis lO,
Damper members 5 fixed to the four corners of the pickup base 12
6a, 56b, 56c, 56d to the side chassis 20a
, 20b.

This is done by attaching them to 20c and 20d, respectively. The details of this installation state are shown in Figure 7 on the side chassis 2.
The relationship between the damper member 56c and the ring-shaped damper member 56 formed in the front surface of the side chassis 20c and made of an elastic material is shown in FIG.
c and is attached to the pickup base 12 via screws 58. Damper member 56c
A metal bushing 60 is embedded in the large screw 58 to prevent the damper member from being deformed by tightening the screw 58. By using this damper member, the pickup base 12 is mounted so as to be allowed to move slightly horizontally relative to the side chassis 20a to 20d, and therefore relative to the main chassis IO. Therefore, even when an external force is applied to the main chassis IO, vibrations are absorbed by the damper member, and the exact positional relationship required between the disk and the pickup mechanism during pickup is properly maintained. Although FIG. 7 shows a state in which the damper member 56c is attached to the side chassis 20c, it is similarly attached at the other three locations.

Further, a pair of guide pieces 62a and 62b having vertical surfaces for guiding the loading chassis 14 are screwed to the left and right sides of the pickup base 12, and a positioning pin 64 for properly positioning the disk cartridge.
a, 64 b, 64 c, and 64 d are planted.

Furthermore, at one end of the cartridge loading/unloading side of the pickup base 12, there is a pickup base rotor means 3 at the time of ejection.
A recess 65 for locking the lock pin 36 of 0 is formed.

The slide plate 16 is a plate-shaped body shaped as shown in FIG. 5, and has an operating portion 66 at one end, and vertical surfaces 67a at two positions on both left and right sides.

Projections 68 in which 67b, 67c, and 67d are formed and engage with horizontal grooves (not shown) carved in the side chassis 20a, 20b, 20c, and 20d, respectively.
a, 68b, 68c, and 684 are formed. The guide pins 22a, 22 installed in the main chassis IO
Guides 170a and 70b are formed to receive the guides 170a and 70b, respectively. Furthermore, the straight portion 74a avoids the positioning pins 64a and 64b implanted in the pickup base 12.

A recess 76 and a guide groove 78 are formed to avoid the positioning pins 74b1 and the positioning pins 64c and 64d. With these, the slide plate 16 is attached to the main chassis IO while being allowed to slide in the cartridge loading/unloading direction, but the frame is always maintained by the spring 72 passed between it and one end of the side chassis 20c. It is biased in the cartridge loading/unloading direction (to the left in the figure).

Furthermore, a pick-up base rod member 80 is fixed to the slide plate 16. This is for locking the pickup base 12 in cooperation with the pickup base locking means 30 attached to the main chassis IO, and its function will be described later. Also, one end 8
2a is pivoted to the inner extension 2I of the side chassis 20d using an abbreviated slide plate locking member 82,
A pin 82b hanging down from the other end is thrust into the guide groove 78. This locking member 82 is interposed between a guide pin 22b passing through the guide groove 7ob and is always biased counterclockwise by a spring 84.

Next, referring to FIG. 6, the loading chassis 14 is made up of an upper plate 14a and side plates 14b that are bent downward from both sides of the upper plate 14a, and the lower ends of the side plates are slightly bent inward to accommodate cartridges. Space is provided. This loading chassis 14 is moved up and down so that it assumes an upper position when a cartridge is not loaded and a lower position when a cartridge is loaded. As shown in Figure 6,
Spring 86a is provided between the left and right side plates 14b, 14b of the loading chassis 14 and the guide pieces 62a, 62b, respectively.
, 86b are suspended to constantly bias the loading chassis 14 in a direction toward the pickup base 12, that is, to take a downward position.

A bias magnet 90 consisting of a coil 89 wound around an E-shaped core 88 is attached to the rear of the loading chassis 14, and forms a magnetic field facing the recording/reproducing section of the disk when the cartridge is loaded. This bias magnet 90 is normally retracted to an upper position,
It is configured to descend during recording and reproduction to form a required magnetic field. That is, the slide piece 92 is connected to the guide pins 98a, 96b, 9 implanted on the loading chassis 14.
6c Guide slots 92a and 92b formed in the slide piece 92 to receive the guide pins, respectively.
, 92c, the loading chassis 14
The cartridge is attached to the top while being allowed to move slightly in the cartridge loading/unloading direction.

The rear end of the slide piece 92 is formed with upright cam surfaces 97a and 97b having opposing inclined parts and upright parts. Also,
A recess 98 is formed at the rear of the loading chassis 14 to apply a magnetic field from a bias magnet 90 to the disk recording/reproducing surface, and its rear end is connected to the opposing upright surface 10.
0a and 1oOb, and elongated slots 102a and 102b are formed in these upright surfaces, respectively. The bias magnet 90 has a connecting pin 104 that passes through the vicinity of the rear end and is inserted into the inclined slots 102a and 102b.
pins 106a, 10 connected to the loading chassis 14 by and protruding outward from both sides of the front end thereof;
6b is an upright cam surface 97a.

By being passed between the racks 97b, the rack is moved up and down following the sliding movement of the slide piece 94. The slide piece 94 is slidable and rotatable around the shaft pin 1osb connected to the loading chassis top plate 14a, and has a slot 108c at one end into which the locking pin 95 of the slide piece 92 is loosely fitted. Engagement end 108a that can be engaged with the upper end 671 of the vertical surface 67b of the slide plate 16
This is brought about by the sliding movement of the slide plate 16 via the arm 108 having a . These movements will be described later. Furthermore, springs 107a and 107b are wound around the pin 104 and have both ends hooked to the pins 106a and 106b and the holes in the loading chassis 14, so that the pin 104, pin 106a, and toab are always urged downward.

Note that the holes in the loading chassis 14 through which one ends of the springs 107a and 107b pass are the elongated slots 102a,
Since the pin 104 is provided at the center position of the radius of the guide portion of the guide portion 102b, the pin 104 is provided in the long hole slot 102a, 102.
Even if the springs 107a and 107b are moved, the ends of the springs 107a and 107b do not slide through the holes of the loading chassis 14.

In addition, on the rear side of the loading chassis upper plate 14a,
Rectangular guide groove 110 and approximately crescent-shaped guide *t
12 are formed, and pins 114b and l14a at both ends of the shutter opening/closing arm 114 are respectively fitted into these guide grooves. This is for opening and closing a shutter that is slidably provided on the cartridge in order to open and close the disc recording/reproducing section, and the details of its operation will be described later.

The arm 114 is constantly pulled toward the cartridge loading/unloading direction by a spring 116, and the pins at both ends are urged to take the positions shown in the guide grooves 110 and 112, respectively.

tt: Guide rollers 118a and l l 8b are provided at three locations on the loading chassis side plate 14b, respectively.

118c, 118d, 118e, and 118f are rotatably attached. Among these, the guide roller 118a
, tisb, 118c, and 118d roll on the inclined shoulders of the side upright surfaces 67a, 67b, 67c, and 67e, respectively, of the slide plate 16, and the guide rollers 118e, 118f are fixed to the sides of the pickup base 12, respectively. It is positioned so as to roll on the vertical portions of the guide pieces 62a and 62b, and is provided to move the loading chassis 14 up and down in accordance with the sliding movement of the slide plate 14.

Main chassis lO and pickup base 12 as described above. Loading chassis 14 and slide plate 16
FIG. 1 shows a top view of a disk drive device assembled with a front panel 17 fixed to the front end of a main chassis 10, with the loading chassis 14 removed. is shown in Figure 2.

Note that these FIGS. 1 and 2 show a state in which the cartridge is loaded and recording/reproduction is possible. In this state, the slide plate 16 is at the farthest position to the left, and the operating section 66 protrudes forward from an opening (not shown) in the front panel 17. Although not shown in the drawings, a cartridge loading/unloading port is formed in the front panel 17 as is known in the art. The cartridge loading and unloading openings do not correspond to the cartridge accommodating space provided by the loading chassis 14 (ie, in its lower position) in the cartridge loading state shown in FIGS. 1 and 2. When the loading chassis 14 is in the upper position, the cartridge loading/unloading port is aligned with the cartridge receiving space, allowing a cartridge to be loaded into the loading chassis 14.

In the disk drive device having the above-described configuration, various operations associated with cartridge loading and unloading will be described below.

(1) Shutter opening/closing operation The cartridge 120 used in this device is made of hard plastic and houses the magneto-optical disk 130, and the center of the front end allows the bias magnet 90 to access the recording/reproducing section of the disk. An access window 122 is opened. A shutter 124 that is slidable in the width direction is attached to the front end of the cartridge, and its shutter opening 126 is positioned to coincide with the access window 122 during recording and playback, and when not in use, it closes the access window and closes the disc. Protect your face. Shutter 124 is constantly spring biased to close access window 122.

Especially regarding the operation of opening and closing this shutter 124,
This will be explained with reference to FIGS. 11 to 11.

During loading, that is, when the cartridge 120 is loaded from the cartridge loading/unloading port of the front panel 17 and pushed into the cartridge housing space of the loading chassis 14, the front end of the cartridge 120 passes through the crescent-shaped guide groove 112 at a certain stage. Then, it comes into contact with a pin 114a at one end of the shutter opening/closing arm 114 protruding into the cartridge housing space below (FIG. 8). At this stage, arm 114 is being pulled by spring 116, so pin 114a is located at the outermost position of crescent-shaped guide 1112.

When the cartridge 120 is further inserted from the state shown in FIG. 8, the pin 114a resists the biasing force of the spring 116.
is moved inward while being guided by the straight portion 112a of the crescent-shaped guide groove 112, and along with this, the shutter 124
is slid to the right in the figure. As a result, the state shown in FIG. 9 is reached, and then the state shown in FIG. 1O is reached. In the state shown in FIG. 1O, the pin 114a is located at the innermost position of the crescent-shaped guide groove 112 and is fitted into and locked in the recess 128 formed at the front end of the cartridge, and the arm l14 and the shutter 124 are held in this position. The disk surface is exposed through the access window 122 and shutter opening 126. Necessary recording and reproducing processing is performed in the state shown in FIG. 1O.

When the slide plate 16 is operated after the required recording/reproducing process, the engagement between the pin 114a and the arm lock recess 28 is released by the operation of the slide plate locking member 82, which will be described later, and the spring 116 suspended on the pin L14a is released. The force causes the arm 114 to rotate about the pin 114b located at the cartridge loading/unloading port side end of the linear guide groove 11O. At this time, the pin 114a is moved along the arcuate portion 112b of the crescent-shaped guide groove 112, pushing the cartridge 120 toward the loading/unloading port and closing the shutter 124. FIG. 11 shows the intermediate state at the time of ejection. When the state shown in FIG. 8 is restored, the access window 122 is opened by the shutter 124.
The cartridge 120 is completely closed and partially ejected from the loading/unloading port.

(2) Slide plate locking operation The slide plate 16 is always urged by the spring 72 in the cartridge loading/unloading port direction, but when the cartridge 120 is not completely loaded, it is locked by the slide plate locking member 82. and is held in a pressed state within the device. When the cartridge 120 is completely loaded, this lock is released and the spring 72
The cartridge is slid in the direction of the cartridge loading/unloading port, and its operating portion 66 protrudes from the front panel 17 in preparation for a subsequent ejecting operation.

This slide plate locking operation will be explained below with reference to FIGS. 12 to 14. When the cartridge is not loaded, the slide plate locking member 82 is in the state shown in FIG. is in contact with the front end surface of. In this state, the pin 82b engages the step 78a of the guide hole 78 of the slide plate 16, locking the slide plate 16 in this position.

During loading, when the cartridge 120 is pushed into the device to the position shown in FIG. 12 where its front end coincides with the front end surface of the loading chassis 14, the front end of the cartridge 120 comes into contact with the locking pin 82c of the locking member 82. . When the cartridge is further inserted from this state, the locking member 82 is rotated clockwise about one end 82a against the spring 84, and the pin 82b climbs over the stepped portion 78a and forms a straight section as shown in FIG. 78b. As a result, the slide plate 16 is unlocked and is slid by the spring 72 in the direction of the cartridge loading/unloading port.

Although the cartridge 120 is completely loaded in the position shown in FIG. 13 and is not moved any further (toward the right in the figure), the guide hole 78 is further formed with an inclined portion 78c continuous with the straight portion 78b. Slide plate 16
is further slid from the position shown in FIG. 13 in the cartridge loading/unloading direction to reach the position shown in FIG. 14. This allows pin 82
b is guided to the inclined portion 78c, the locking member 82 is further rotated clockwise, and the locking pin 82c is separated from the front end of the cartridge. This helps to avoid physical contact with the cartridge 120 and prevent vibration to the pickup base when the slide plate 16 is unlocked, ie, during disc recording/reproduction processing. For example, the operating section 66 of a sliding plate protruding from the front panel 17
Even if a slight external force is applied to the cartridge 120, the locking pin 82c is not in contact with the cartridge 120, so that vibration will not have an adverse effect on the recording/reproducing process.

At the time of ejection, the slide plate 16 is pushed in the right direction in the drawing, so that, contrary to the above explanation at the time of loading, the state shown in FIG. 14 passes through the state shown in FIG. 13 and becomes the state shown in FIG. 12. The slide plate 16 is locked by the pin 82b being engaged with the R portion 78a. In addition, the first
When transitioning from the state shown in Fig. 3 to the state shown in Fig. 12, the pin 82
When the cartridge 120 moves over the stepped portion 78a, the locking member 82 is slightly rotated counterclockwise by the biasing force of the spring 84, and the locking pin 82c pushes the cartridge 120 toward the loading/unloading port. As a result, the engagement between the pin 114a of the shutter opening/closing arm 114 and the lock recess 128 at the front end of the cartridge (FIG. 10) is released, and the shutter 124 is allowed to slide (FIG. 11).

(3) Loading chassis lifting/lowering operation Loading chassis 1 housing the cartridge 120
4 is in the lower position when the cartridge 120 is fully loaded, as described above, to enable the necessary recording and reproducing processing, and when ejecting, the slide plate 16 is moved by pushing the operating section 66. This allows the cartridge 120, which is moved upwardly to the upper position as it slides and is pushed out by the operation of the slide plate locking member 82 described above, to be ejected from the loading/unloading port.

FIG. 15 shows the loading chassis 14 in the lower position, and the guide rollers 118a, 118b, 118C, and 118d protruding outward on both sides are each pulled toward the front by the spring 72 to a position. Vertical surfaces 67a, 67b, 67c of a certain slide plate 16,
67d, but their sloped shoulders 670a,
670b, 670c, 670d (670a, 670b
(Only shown in the figure) does not make contact with any part.

Therefore, the physical vibration of the slide plate 16 causes the loading chassis 14. via the guide pieces 62a, 62b or the loading chassis 14. The pickup base 12 and eventually the actuator 52. The information is prevented from being transmitted to the disk 130, and the necessary recording/reproduction processing is performed smoothly. In addition, the guide roller 118e,
118r is a vertical portion 620a of the guide pieces 62a, 62b extending vertically from both sides of the pickup base 12.

It is in contact with the lower end of 620b (only 620a is shown). In addition, in this state, the cartridge 12
0 is implanted in the pickup base 12; its lower surface is supported by positioning pins 64a, 64b, 64c, and 64d to ensure a predetermined clearance with the pickup base 12 and held in parallel, and the positioning pins 64b, The tip of the cartridge 64d enters a positioning recess 121 provided on the lower surface of the cartridge 120 to prevent wobbling on the parallel surface.

By positioning the cartridge 120 accurately in this manner, the loading chassis 14 is moved by the springs 86a and 86.
It is stably held in this downward position by the urging force b. The disk 130 in the cartridge 120 is placed on the motor 42 and fixed to the turntable by attraction with a magnet 44, so that it can rotate without contacting the inner surface of the cartridge 120. When the slide plate 16 is slid from this state to the left in the figure, the guide rollers 118a, 118b, 118c, and 118d rise while being guided by the inclined shoulders 670a, 670b, 670C, and 670d, and the loading chassis 14 is parallel to the will be moved upwards. Guide rollers 118e, ll8f and vertical portion 620a.

Since the loading chassis 14 is restricted from moving in the sliding direction of the slide plate 16 by contact with the slide plate 620b, only upward movement is performed against the urging force of the springs 86a and 86b. Thus, after passing through the 16th I30 state,
The eject state shown in FIG. 17 is obtained. At this time,
As described above, since the slide plate 16 is locked by the locking member 82, this ejected state is maintained unless the cartridge 120 is inserted and the slide plate 16 is unlocked. When the slide plate 16 is unlocked, the slide plate is moved to the right in the figure by the spring 72, and the guide roller 118a is moved.

118b, 118c, 118d are inclined shoulders 670a, 6
70b, 670c, and 670d, and by the biasing force of springs 86a and 86b, the loading chassis 14 is automatically moved downward to the lower position shown in FIG. 15, and is ready for the required recording/reproducing process.

(4) Locking operation of pickup base As mentioned above, in this device, the pickup base 12 is not directly fixed to the main chassis IO, but the damper member 56a,
56b, 56c.

side chassis 20a, 20b via 56d;

It is attached to 20c and 20d. Buffering is provided by these damper members, and the pickup base 12 is allowed to be slightly displaced in the horizontal direction with respect to the main chassis IO. In such a configuration, when the slide plate 16 is pushed to raise the loading chassis 14 during ejection, the guide rollers 118a, 11
8b, 118c, 118d are inclined shoulders 670a, 670
b.

670c, 670d from the state shown in FIG.
When transitioning to the state shown in Fig. 7, the guide rollers 118e, l
l8f and the vertical parts 620a, 6 of the guide pieces 62a, 62b
Due to the contact with 20b, the pickup base 12 moves slightly to the left in the drawing, resulting in an unfavorable operating feeling. Therefore, at the stage shown in FIG. 16, a pickup base locking means 30 is employed for locking the pickup base 12 to the main chassis IO. The locking operation by this pickup base locking means 30 will be explained below with reference to FIGS. 18 to 20. These FIGS. 18 to 20 show the same stages as shown in FIGS. 15 to 17, respectively.

The arm 32 of the pickup base locking means 30 is always urged counterclockwise in the drawing by a spring 39.
In the cartridge loading state shown in FIG. 18, the positioning pin 34 rides on the inclined cam surface 80a of the cam member 80 on the slide plate 16, which is being pulled toward the right in the figure, so that the positioning pin 34 is pushed against the spring 39 and In this state, the enlarged portion 36a of the lock pin 36 is separated from the engagement recess 65 of the pickup base 12.

Therefore, in this state, the pickup base locking means 3
0 is inactive, and the pickup base 12 is damped by the damper members 56a, 56b, 56c, and 56d, and the actuators 52. Protects disk 130 from external vibrations.

When the slide plate 16 is pushed from this state to the state shown in FIG. 19, the positioner 734 falls from the inclined cam surface 80a, and the arm 32 is rotated counterclockwise in the figure about the shaft 38 by the spring 39. The enlarged portion 36a of the lock pin 36 is fitted into the recess 65, and the pickup base 1
2 to the main chassis 10. At this point, as shown in FIG. 16, the loading chassis 14 still remains in the lower position. Slide plate 1
6 is further slid to the left in the figure from the position shown in FIG. 19 and assumes the position shown in FIG. 20, but the state of engagement between the opening pin 36 and the recess 65 is maintained.

In short, when the slide plate 16 is slightly pushed in, the pickup base 12 is first locked, and when the slide plate 16 is further pushed forward, the loading chassis 14 is moved upward while the lock is maintained. In this embodiment, by pushing the slide plate 16, its vertical surface inclined shoulders 670a, 670b, 670c,
Guide rollers 118a, 118b, 118c on 670d
, 118d contact the lock pin 36 and the recess 6 at the same time.
5 to lock the pickup base 12, the pickup base 12 may be locked immediately before the guide roller comes into contact with the inclined shoulder.

When the cartridge 120 is loaded into the loading chassis 14 from the ejected state shown in FIG. return to the state.

(5) Elevating and lowering operation of bias magnet The bias magnet 90 attached to the loading chassis 14 not only moves up and down as the rope (hanging chassis) rises and falls, but also moves upward and away when the loading chassis is in the ejected state at the upper position. In the loading state in which the loading chassis is in the lower position, the disc is moved up and down so as to be relatively close to the loading chassis and take an operating position to form a required magnetic field against the disk surface. When the bias magnet 90 is fixedly attached to the loading chassis 14 so as to provide the necessary clearance with the disk surface to form the required bias magnetic field, the bias magnet 90 is fixedly attached to the loading chassis 14 during the loading operation of the cartridge 120.
This is because the magnetic pole part of 0 becomes a hindrance. The raising and lowering operation of the bias magnet will be explained below with reference to FIGS. 21 to 23.

FIG. 21 shows the cartridge loaded state, at which time the engaging end 108a of the arm 108 installed between the loading chassis 14 and the slide piece 92 comes into contact with the upper end 671 of the vertical surface 67b of the loading chassis slide plate 16. Not in contact. Pins 106a and 106b are springs 107a
, 107b, so
In this state, the pins 107a and 107b do not ride on the upright cam surfaces 97a and 97b of the slide piece 92, but are located in front of them. and pin 10 on the other end
4 is also pressed downward by springs 107a and 107b to form an inclined slot 102a.

102b, the bias magnet 90 occupies an operative position in close proximity to the loading chassis 14.

In this cartridge loading state, the engaging end 108a of the arm 108 is not in contact with the upper end 671 of the slide plate 16, so even if a hand or an object comes into contact with the operating section 66 of the slide plate 16, the arm 108, loading Chassis 14. Cartridge 120, positioning pins 64a, 64
b. The vibration is not propagated to the pickup pace 12, furthermore to the disk 130 or the actuator 52, and the position of the bias magnet 90 also does not change. If the slide plate 16 is pushed forward from this cartridge loaded state, it will reach the state shown in FIG. No change in position is observed.

The loading chassis 14 also still remains in the lower position.

When the slide plate 16 is further pushed to the left in the figure, the arm engaging end 108a is pushed by the upper end 671 of the vertical surface 67b of the slide plate and rotates clockwise in the figure about the shaft 108b. As a result, the guide pins 96a, 96b, 96c on the loading chassis 14 are inserted into the guide slots 92a, 92b, 92c of the slide piece 92.
While being guided, the slide piece 92 is slid in the right direction in the figure, opposite to the slide plate 16. The pins 106a and 106b at the tip of the bias magnet 90 are connected to the spring 107a.
, 107b, the upright cam surface 97a of the slide piece 92
, 97b. As a result, the bias magnet 90 changes from the state shown in FIG. 22 to the connecting pin 104.
Rotate counterclockwise in the figure approximately around the center. This rotation continues until the pins 106a, 106b completely ride up the slope of the sloped shoulders 97a, 97b to the upright portion. Then, when the slide plate 16 is further pushed forward and the slide piece 92 is slid to the right in the figure, the pins 106a and 106b move to the right while maintaining their raised positions. The connecting pin lO4 connects the inclined slots 102a, 102 with
Rotate clockwise as shown in the figure while being guided by b.

As a result of such a series of operations, the bias magnet 90 is moved upward parallel to the loading chassis 14, and assumes the retracted position shown in FIG. 23. This second
As soon as the state shown in FIG. 3 is obtained, the slide plate 16 is locked by the locking member 82, so that the bias magnet 90 is held in the retracted position.

When the cartridge 120 is loaded, the slide plate 16 is pulled back by the spring 72 as described above, and the bias magnet 90 automatically returns to the operating position shown in FIG. 21 through the state shown in FIG. 22.

It should be noted that the present invention is not limited to the above embodiments, and for example, the guide rollers 118e, 118r and the guide piece 6
2a and 62b guide the loading chassis 14 in the mounting direction, but the guide rollers 118e and 11
8f as guide rollers 118a, 118c or guide roller 118b.

118e can also be used. Further, although the present invention is particularly suitable for use in a disk drive device that uses a disk cartridge that accommodates an optical disk, it may also be used in a disk drive device that uses a disk cartridge that accommodates a 70-tube disk or a magnetic disk. In this case, the pickup mechanism includes a magnetic head, a stepping motor, and the like.

<Effects of the Invention> In the disk drive device of the present invention having the configuration described above, the pickup base is attached to the main chassis via the damper means, and the loading chassis in the operating position has a slide plate movable to the main chassis. The cartridge is supported by a positioning pin implanted on the pickup base. Therefore, external vibrations acting on the slide plate are not transmitted to the loading chassis or pickup base, and external vibrations transmitted to the thermal main chassis are also avoided by the damper means, so the pickup base, and by extension the disk and pickup mechanism, are not affected by external vibrations. The required recording and reproducing is achieved without any adverse effects.

[Brief explanation of the drawing]

FIG. 1 is a top view of a disk drive device according to an embodiment of the present invention in a cartridge loaded state, FIG. 2 is a top view similar to FIG. 1 with the loading chassis removed, and FIG. FIG. 4 is a plan view showing the main chassis and related members that make up this device, FIG. 4 is a plan view showing a pickup base and related members that make up this device, and FIG. FIG. 6 is a plan view showing the loading chassis constituting this device and members related thereto; FIG. 7 is an enlarged cross-sectional view showing the mounting state of the pickup base; FIGS. FIG. 11 is a schematic plan view illustrating the shutter opening/closing operation over time as the disk cartridge is inserted, and FIGS. 12 to 14 are chronological diagrams illustrating the locking operation of the slide plate as the disk cartridge is pushed forward. A schematic plan view, and FIGS. 15 to 17 are schematic side views and FIGS.
The figure is a schematic side view illustrating the locking operation of the pickup base over time as the slide plate is pushed forward, and Figures 21 to 23 are schematic side views illustrating the upward and downward movements of the bias magnet over time as the slide plate is pushed forward. They are a schematic plan view and a side view. Explanation of symbols [0: Main chassis 12: Pickup base 1
4: Loading chassis 16: Slide plate 20a
, 20b, 20c, 20d: Side chassis 22a
, 22b nisride plate guide pin 30: Pickup base rotor means 32: Arm 34: Positioning pin 36: Lock pin 38: Axis pin 39: Spring 56
a, 56b. 56c, 56d: damper member 62a, 62b guide pieces 64a, 64b, 64c, 64d: positioning pin 65: recess for big up base rotor 66: eject operation section 67 a, 67 b. 67c, 67d: Vertical surface 70a, 70b Ni guide @
72: Spring 78 Ni guide groove 80: Cam member for big up base lock 82 Ni Ride plate lock member 84
: Spring 90: Bias magnet 92: Slide piece for bias magnet 108: Arm 114: Shutter opening/closing arm 118a, 118b, 11
8c, 118d. 118e, 118f Ni guide roller 120: Cartridge 126: Shutter 128 = Concave for arm rotor! 13O: Disc

Claims (4)

[Claims] (1) A loading chassis capable of accommodating a disk cartridge is configured so that it can take a first position where recording and reproduction of the disk is possible and a second position where it is in a retracted state according to the movement of the slide plate. A disk drive device characterized in that the loading chassis is held without contact with the slide plate when the loading chassis is in the first position. (2) A main chassis, a pickup base on which at least a pickup mechanism for recording and reproducing the disk is placed, and a damper means for preventing external vibrations acting on the main chassis from being transmitted to the pickup base. a mounting means for attaching the pickup base to the main chassis; a slide plate movably attached to the main chassis; and a first position for accommodating a disc cartridge and enabling recording and reproduction of the disc. and a second position separated from the pickup base and placed in a retracted state; an engaging part provided on the loading chassis and an engaged part provided on the slide plate. It consists of a guide part that guides the loading chassis in the mounting direction, an engaging part provided on the loading chassis, and an engaged part provided on the slide plate, and as the slide plate moves, the loading chassis an acting part that moves the connecting part between the first position and the second position, and the engaging part and the engaged part are in a non-contact state when the loading chassis is in the first position; A disk drive device comprising: support means provided on the pickup base so as to support the loading chassis at the first position. (3) A main chassis, a pickup base on which at least a pickup mechanism for recording and reproducing the disk is placed, and the pickup base and the above for preventing external vibrations acting on the main chassis from being transmitted to the pickup base. damper means disposed between the main chassis, a loading chassis capable of accommodating a disc cartridge, and a first position provided on the pickup base, where the loading chassis can record and play back from the disc, and the pickup base. a guide means for guiding the loading chassis so that the loading chassis can be moved between the first position and a second position where the loading chassis is in a retracted state; The loading chassis is provided with an inclined surface for moving the loading chassis between the first and second positions.
a slide plate whose inclined surface is in a non-contact state with the loading chassis when the loading chassis is in the first position; supporting means provided on the pickup base to support the loading chassis in the first position;
A disk drive device comprising: (4) The disk drive device according to claim 2 or 3, wherein the support means comprises a positioning pin provided on the pickup base so as to place the cartridge housed in the loading chassis in the first position. .