JPH0227584A - Disk driving device - Google Patents

Abstract

PURPOSE:To improve the operation feeling of a slide plate at the time of an ejection by installing a pickup base to support a recording and reproduction mechanism with a fixed main chassis through a dumper means and installing a locking means to fix the pickup base with the main chassis at the time of the ejection. CONSTITUTION:A pickup base 12 is installed with a main chassis 10 through the dumper means. A loading chassis 14, when it is located at an operation position, is prevented from being brought into contact with a plate movable to the main chassis 10 and supported b y a cartridge to be supported with a positioning pin 34 attached on the pickup base 12. When a slide plate 16 is push-operated in order to eject the loading chassis 14, before the loading chassis 14 starts moving, firstly a locking means fixes the pickup base 12 with the main chassis. Thus, the pickup base 12 is prevented from moving due to the pressure of the slide plate 16 and the operation feeling at the time of the ejection is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> 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> Generally, a disk drive device for performing recording and reproducing processing on a disk cartridge, which is made of a hard plastic cartridge containing a recording medium such as a magnetic disk or a floppy disk, generally has a base that constitutes the device body. ,
A slide plate slidably attached to this;
It consists of a disk car and a loading chassis that stores the cartridge. A pickup mechanism, a spindle, etc. for performing 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 between the retracted position and 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 a position where the loading chassis is in the retracted position. On the other hand, when the disk cartridge is stored in the cartridge accommodating body at this retracted position, this lock is released, the slide plate is moved back by the spring, and the loading chassis is moved downward 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 propagating to the disk or the pickup mechanism, particularly the actuator section. Therefore, in order to eliminate external vibrations, a main chassis can be further provided, and the main body (base) of the device can 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. The base of such a disk drive device is attached to the main chassis via a damper, so
- No external vibrations are transmitted to the viewing disc or pickup mechanism.

However, during recording/reproducing processing, that is, when the loading chassis is in the lower operating position, the eject operating section at the tip of the slide plate protrudes forward of the front panel in preparation for a subsequent eject 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 this recording reprocessing, the vibrations are propagated to the base plate and eventually to the disk and pickup mechanism, which may impede the necessary recording and reproducing processing.

In addition, when the slide plate is pushed forward to eject the loading chassis in the operating position to the retracted position, the pickup base is provided with a guide portion that guides the loading chassis in the mounting direction, so that force is applied in the pushing direction of the slide plate. is added.

For this reason, if the pickup base is attached to the main chassis via a damper, the pickup base will move due to this pressing force, resulting in an unfavorable operating feel during ejection.

Means and Effects for Solving the Problems> Therefore, the present invention attaches a pickup base that supports a recording/reproducing mechanism to a fixed main chassis via a damper means to prevent external vibrations from being transmitted to the disk or the pickup mechanism during recording/reproducing. To avoid this problem, and to provide a structure of a disk drive device in which a locking means for fixing a pickup base to a main chassis at the time of ejection improves the operational feeling of a slide plate at the time of ejecting.

The disk drive device of the present invention, which has been carefully devised to achieve this purpose, includes a main chassis, a pickup base on which at least a pickup mechanism for recording and reproducing the disk is mounted, and an external vibration acting on the main chassis that is picked up. Attachment means for attaching the pickup base to the main chassis via a damper means for preventing the transmission of power to the base; a slide plate movably attached to the main chassis; and a disc cartridge. A loading chassis that is movable between a first position where recording and reproduction of the disc is possible and a second position that is separated from the pickup base and is in a retracted state, and an engaging portion provided on the loading chassis. and an engaged part provided on the pickup base; 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 moves the loading chassis between the first position and the second position as the slide plate moves,
An action part in which the engaging part and the engaged part are in a non-contact state when the loading chassis is in the first position, and a lock that restricts the movement of the pickup base with respect to the main chassis while the loading chassis is moving. It is characterized by having a means.

When the loading chassis is in the first position, the locking means does not restrict movement of the pickup base with respect to the main chassis, so that the pickup base is prevented from transmitting external vibrations by the damper means. Further, when the slide plate is pushed forward in order to eject the loading chassis to the second position, the locking means first restricts the movement of the pickup base. When the slide plate is further pushed forward, the loading chassis moves to the second position while this regulation is maintained.

<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 IO 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. Furthermore, 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 guide grooves 70a and 70b of the slide plate 16, which will be described later.

Disk cartridge loading/unloading side of main chassis IO (
A pickup base locking means 30 is attached to the left side of FIG. 3). This pickup base locking means 3
0 includes an arm 32, a positioning pin 34 passing through one end of the arm, and an arm 3 below the positioning pin.
The shaft portion 34a of the positioning pin and the enlarged portion 36a of the lock pin, which has a pentagonal cross section (FIGS. 18 to 20), are both attached to the upper side of the arm 32 in FIG. It stands out. The other end of the arm 32 is pivoted by a pin 38 to the vertical surface 24a of the L-shaped fitting 24 screwed on the loading/unloading port side of the main chassis 10, and thus rotates on the vertical surface around the pin 38. Although the spring 39 is configured to be rotatable, both ends of the spring 39 are hooked onto the shaft portion 34a of the positioning pin and the hole 24b formed in the vertical surface 24a, and the spring 39 is wound around the pin 38, so that the arm 32 is always rotated. The free end is 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/reproducing mechanism includes a spindle 40. which is inserted into the center opening of the disk. A motor 42 that rotates the lk spindle.
Magnet 44 to attract the disc. It irradiates a spot of laser light onto the recording/reproducing section of the disk through an objective lens 46, and includes an actuator 52 and the like 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, necessary circuits, etc. (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 10. The pickup base 12 is attached to the main chassis IO using damper members 56 fixed to the four corners of the pickup base 12.
a, 56b, 56c, 56d as 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 damper member 56c is as shown in FIG.
This is attached to the pickup base 12 via screws 58. A metal bushing 60 is embedded in the screw hole of the damper member 56c 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 if an external force acts on the main chassis 10, vibrations are absorbed by the damper portion H, 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 20ci::J''L, it can also be attached to the same 4111 at three other locations.

Furthermore, a pair of guide pieces 62a and a2b 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 64a for properly positioning the disk cartridge. , f3Jb, 64c, and 64d are implanted. Furthermore, a recess 65 is formed at one end of the pickup base 12 on the cartridge loading/unloading port side to lock the lock pin 36 of the pickup base locking means 30 during ejection.

The slide plate 16 is a plate-shaped body having a shape as shown in FIG. 5, and has an operating portion 66 at one end, and a melon elevation surface 67 at two locations on each of the left and right sides.

67b, 67e, 67a are formed, and side chassis 20a, 2 Ob, 20 c, 2 Od are formed.
J:", horizontal grooves 414 (not shown) and protrusions 68a, B8b, 68c, 6 that engage with the horizontal grooves 41, respectively.
8d is formed. Furthermore, guide grooves 70a and 70b are formed to receive guide pins 22a and 22b, respectively, which are set up on the main chassis lo. Furthermore, positioning pins 64a and 64b implanted in the pickup base 12
A straight line portion 74a that avoids this.

A recess 76 and a guide groove 78 are formed to avoid the positioning pins 74b1 and the positioning pins 64c and a4d. , - the slide plate 16 is allowed to move toward the main chassis 10 (in the cartridge loading/unloading direction), but the side chassis 20
The frame is always biased in the direction of cartridge mounting and dislocation (to the left in the figure) by a spring 72 that is passed between the frame and one end of the frame c.

Further, a pickup base locking cam member 80 is fixed to the slide plate 16. This locks the pickup base 12 in cooperation with the pickup base locking means 30 attached to the main chassis 10, and its operation will be described later. Further, an abbreviated slide plate locking member 82 whose one end 82a is pivotally supported by the inner extension part 21 of the side chassis 20d is used, and a pin 821) hanging from the other end is connected to the guide groove 7.
Rushed into 8. This lock part Hayashi 82 is the guide 11
The frame is always biased counterclockwise by a spring 84 that is passed between the frame and the guide pin 22b that passes through the frame 70b.

Next, referring to FIG. 6, the loading chassis 14 consists of an upper plate 14a and an I-side plate 14b that is bent downward from both sides of the upper plate 14a, and the lower end of the side plate is bent slightly inward to create a space for accommodating a cartridge. is provided. This loading chassis 14 is moved up and down so that it takes a lower position when a cartridge is not loaded, and takes a lower position when a cartridge is loaded. Left and right side plates 114b, 1 of the J-U10-ding chassis 14, not shown in FIG.
4b and the guide pieces 62a, a21), springs 86a, 86b are respectively applied to bias the loading chassis 14 in a direction that constantly draws the loading chassis 14 toward the pickup base 12, that is, to take a downward position. ing.

At the rear of the loading chassis 14, there is an E type-1 a88.
A bias magnet 90 having a coil 89 mounted thereon is attached to form 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, and is configured to descend during recording and reproduction to form a required magnetic field. In other words, fly 1! The pieces 92 are guide pins 96a and 96 implanted on the loading chassis 14.
b, Q6e and a guide pin 92 formed on the slide piece 92 so as to receive these guide pins 1j, respectively.
Collaboration with a, Q2b, and 92c! '::->te, +1-
The cartridge is installed on the loading chassis 14'' while allowing some relative movement 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 for applying a magnetic field from a bias magnet 90 to the disk recording/reproducing surface, and the rear end is formed by an opposing upright surface 1ot.
a and 100b, and elongated slots 102a and 102b are formed in these upright surfaces, respectively. The bias magnet 90 is connected to the loading chassis 14 by a connecting pin 104 that passes through the vicinity of the rear end and is inserted into the inclined slots 102a, 102b.
Pins 106a, 106 protrude outward from both sides of its front end.
b is the 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 a shaft pin 108b 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. Further, the pin 104 and the pins 106a, 106b are always urged downward by springs 107a, 107b which are wound around the pin 104 and have both ends hooked to the pins 106a, 106b and the holes of the loading chassis 14.

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 and 1.
Since the pin 104 is provided at the center position of the radius of the guide portion of 02b, the pin 104 is located in the long hole slot 102a,
Even if the springs 107a and 107b are moved, one end of the springs 107a and 107b will not slide through the holes in the loading chassis 14. Further, on the rear side of the loading chassis upper plate 14a, a rectangular guide groove 110 and a substantially crescent-shaped guide groove l12 are provided.
are formed, and pins 114b and 114a 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 aligned with the guide grooves 1, respectively.
10.112 to assume the position shown.

In addition, each loading chassis side plate 14b has three
Guide rollers 118a and 118b are provided at the locations.

118c, 118d, 118e, and 118f are rotatably attached. Among these, the guide roller 118a
, 118b, 118c, and 118d roll on the inclined layers 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 move over 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 10 as described above. Pickup base 12. 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 1O, and a top view of the disk drive device 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/unloading port does not coincide with the cartridge accommodating space provided by the loading chassis 14 in the cartridge loading state shown in FIGS. 1 and 2 (that is, when it is in its lower position). When the loading chassis 14 is in the upper position, the cartridge loading/unloading port is aligned with the cartridge receiving space, allowing the cartridge to be loaded into the loading chassis 14.

In the disk drive device having the configuration as described above, various operations for loading and unloading a cartridge will be described below.

(1) Shutter opening/closing operation The car 1 cartridge 120 used in this device is made of hard plastic and houses the magneto-optical disk 130, and the bias magnet 90 can access the recording/reproducing section of the disk at the center of the front end. An access window 122 is opened for access. At the front end of the cartridge, there is a shutter 12 that is slidable in the radial direction.
4 is installed, and its shutter opens [r] 126,
When recording and playing back, the access window 122 matches J: No "
It is opened (-) and the access window is closed when not in use.1
Protect the disc surface with ~. The shutter 124 is always spring-biased to close the window 122.

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

When loading, immediately set the car cartridge 120 to 7o 7
1- When the cartridge 120 is loaded from the Carr/Ridge loading/unloading port of the panel 17 and pushed into the cartridge housing space of the loading chassis 14, at a certain stage, the cartridge 120
The front end of the shutter abuts against the pin 114a at one end of the shutter opening/closing arm 114, which passes through the August-shaped guide groove 112 and projects into the cartridge accommodating slide below (FIG. 8). At this stage, the arm 114 is attracted to the spring 116 by j, so the pin 11
4a is -y, E' is located at the outermost position of the January-shaped guide groove 112 (7° C).

From the state shown in FIG. 8, the yl:force cartridge 120 is charged 1. As it goes, the force of spring 11B becomes 45. anti-L-c
T.

The pin 114a is the straight part 1 of the crescent-shaped guy l'1ll12.
12 a L, -, is moved inward while being guided, and the shutter 124 is accordingly slid in the right direction in the drawing. This process leads to the state shown in Figure 9, which leads to the state shown in Figure 1O. In this state shown in FIG. 1, the pin 14a is located at the innermost position of the crescent-shaped guide 112, and is fitted into the recess 128 formed at the front end of the cartridge. , the arm 114 and the shutter 124 are locked in this position, and the required recording and reproducing operations are performed in the state shown in FIG.

When the pitching slide plate 16 for the required recording/reproducing process is operated, the engagement between the pin 114a and the four arm lock parts 128 is released by the operation of the pitching slide plate locking member 82, and the spring attached to the pin 14a is released. The force 116 causes the arm 114 to rotate about the pin 114b'r located at the cartridge loading/unloading port side end of the linear guide i*iio. At this time, the pin 114a is moved along the arcuate portion 112b of the crescent-shaped guide groove 112, pushes the cartridge 120 in the loading/unloading direction, and closes the shutter 124. This figure shows an intermediate state during ejection.When the state returns to the state shown in FIG. 8, the access window 122 is completely closed by the shutter 12.4, and the cartridge
0 is partially discharged from the loading/unloading port.

(2) Slide plate locking operation The slide plate 16 is always held by the spring 72 in the cartridge loading/unloading direction (+j force 1.1, but when the cartridge 120 is fully loaded, When the cartridge 120 is in the empty state (), it is locked by the slide plate locking member 82 and is held in a state pushed into the device.When the cartridge 120 is fully loaded,
When this lock is released, the cartridge 7 is moved in the loading/unloading direction by the spring 72, and the operating section 66 is moved by 70 degrees.
Projecting from panel 17 11. to prepare for the subsequent eject operation.

Regarding this slide plate locking operation, see FIGS. 12 to 14 below.1. To begin with, the slide plate lock part 82 is in the first position when the cartridge is not loaded.
In the state not shown in FIG. 2, the locking pin 82C is in contact with the front end surface of the loading chassis 14. In this state, the pin 821] engages the stepped portion 78a of the guide hole 78 of the slide plate 16, thereby 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. 82c. 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 unloaded, that is, during disc recording and reproducing 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 stepped 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. 1θ) 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 to enable the necessary recording and reproducing processing, and when ejecting the cartridge 120, the slide plate 16 is slid by the push operation of the operating section 66. This allows the cartridge 120 pushed out by the operation of the slide plate locking member 82 to be ejected from the loading/unloading port.

Figure 115 shows the loading chassis 14 in the downward position, and the guide rollers 118a, 118b, 118c, and 1tact protruding outward on both sides are each pulled toward the front by the spring 72 to a position. Vertical surfaces 67a, 67b, 67 of a certain slide plate 16
c, 67d, but their inclined shoulder 670
a, 670b, 670c, 670d (670a, 67
0b (only shown in the figure), there is no 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,
118f 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 supported on its lower surface by positioning pins 64a, 64b, 64c, and 64d implanted in the pickup base 12, and is held parallel to the pickup base 12 with a predetermined clearance.
The tips of 4b and 64d enter the positioning recess 121 provided on the lower surface of the ridge 120 to prevent rattling on the parallel plane.

Is the cartridge 120 correct like this? By being lowered into position i1i, the loading chassis 14 releases the spring 8aa.
, 86b, it is stably held in this downward position. The disk 130 in the cartridge 1.20 is attracted and fixed to a turntable mounted on a motor 42 with a magnet 44, and the disk 130 in the cartridge 12
It is possible to rotate without contacting the inner surface of 0. When the slide plate 16 slides from this state to the left in the figure, the guide rollers 118a, 118h, 118c, and 118d move toward the inclined shoulders 67Oa, 67Ob, 67Oc, and fi, respectively.
The loading chassis 14 is raised while being guided by 70d, and the loading chassis 14 is moved upward in parallel. guide roller 118e,
118f 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 86h. Thus, after going through the state shown in Figure 16, the first
The situation shown in FIG. 7 is obtained. At this time,
Since the slide plate 16 is locked by the lock member 82 as described in t-1, this ejected state is maintained unless the cartridge 120 is loaded and the slide plate 16 is unlocked. When the slide plate 16 is unlocked, the spring 721 causes the slide plate to move to the right in the figure, causing the guide roller 118a to move.

118b, 118c, 118d are inclined shoulders (370a,
Spring 8Ba is guided by 670b, 670c, and 670d, respectively. The loading chassis 14 is automatically moved downward to the lower position shown in FIG. 15 by the pushing force of the loading chassis 86b, and is ready for the required recording/reproducing process.

(4) Locking operation of the pickup base As mentioned above, the pickup base 12 of this device 14:m is not directly fixed to the main chassis lO, and the damper part 1
Zide chassis 20a, 20b via 4-56a+513b, 56c+56d.

It is attached to 2Oc and 20a. A buffer 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 10. In such a configuration, when the slide plate 16 is pushed to raise the loading chassis 14 during ejection, the guide rollers 118a, 11
8h, 118e, 118d are inclined shoulders 670a, 670
b.

From the state shown in Fig. 16 in which it contacts a70e and 670d, the first
When shifting to the state shown in Fig. 7, the guide rollers 118e, 1
18f and the vertical portions 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[m 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.
When the cartridge is loaded (not shown in FIG. 18, 6J), the positioning pin 34 rests 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 spring 39 In this state, the enlarged portion 36a of the l-hook pin 36 is separated 41 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 big cube base 12 has damper parts H56a, 56h, 5ac, 5
6d, the actuator 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 positioning pin 34 falls from the inclined cam surface 8Oa, and the arm 32 is rotated counterclockwise in the figure about the shaft 38 by the spring 39. Then, 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 lO. 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 with this lock 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 loading chassis moves up and down, but also moves upward and away when the loading chassis is in the eject state. In a loading state in which the loading chassis is in a 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. This is because 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 vibrations are not propagated to the pickup base 12, and by extension the disk 130 and 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 leftward in the figure, the arm retaining 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, 961 of the rv-ding?v-shi 14J-,
), while Q6C is being guided, the slide piece 92 slides in the right direction t in the figure, opposite to the slide plate 1G.
), pin 106 at the tip of bias magnet 90 in part 1-
a, 1061] resists the springs 107a, 1071+ and -[
The sloped portion J2 of the upright cam surface 117a, 971) of the slide piece 92 is attached. , :,H, the bias magnet 90 is moved from the state shown in FIG. 22 to approximately the center of the connecting pin 104 and 1. This rotation continues until the pins 106a and 106b completely ride up the sloped portions of the sloped shoulders 97a and 971 and reach the upright portion.
be controlled. After this, the slide plate 1G is further pushed forward 4
1. When the slide bar 92 is slid 6J in the right direction in the figure,
Pins 106a and l oab are moved to the right while maintaining the raised position @1. Therefore, this time pins 106a and 106
Center b and 1. Then, the connecting pin 104 is tilted to the inclined spot 1.
02a and 102b, it rotates clockwise in the figure. A series of operations like this are performed 41. As a result, the bias magnet 90 is moved upward by 1' parallel to the loading chassis 141 and takes the position shown in FIGS. 2 and 3. If the request shown in Figure 23 is obtained, the same 1 temple 1. A ride plate lO is v-dock member 1
12 Snoring J:) I'm going to get snored, so I'm going to use a bias magnet.
-9O is the retreat position field.

Retained41. Ru.

When the cartridge 120 is loaded, 1. As shown in FIG. 21, the slide plate 16 is pulled back to the position 72 by J, and the bias magnet 90 automatically goes through the states 22 to 1 and returns to the operating position 6 in FIG. 21.゛, return °φ゛.

It should be noted that the present invention has an additional feature in addition to the above-mentioned practical example. For example, the guide rows 5118e and 118f and the guide pieces 62a and 62hl are used to guide the ding chassis 14 in the mounting direction by 6 degrees, and the guide rollers 118e and 118f are guided by the guide rollers 5118e and 118f. ,,,−
=: 2118a, 118c and μ guide' -51
1811゜118e can also be used as a'', Taki-nii II: 11. f1, especially a disk drive system using an optical disk or a disk cartridge to accommodate it.
Although it is suitable for use in disk drive systems using a disk cartridge containing a free J7 disk, a 63J disk containing a magnetic noise disk, this In this case, the pickup mechanism is a magnetic head,
It consists of stepping motors, etc.

<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 gunpa means. Contact with the movable plate on the main chassis is avoided when in the working position, oblique '1,
Big up base, J'1. j-
It is supported by the cartridge supported by positioning pins. Therefore, external vibrations acting on the slide plate will not be transmitted to the Tuff-ding chassis and pickup base, and external vibrations transmitted to the main chassis will also be avoided. However, the pink-up base, and by extension the disk and pickup mechanism, are adversely affected by external vibrations (unable to achieve the desired recording and playback performance).

6:2, Before the ding chassis starts moving, the slide plate is pushed forward in order to eject the tat τ]-ding 〉 yardage.
f'+fJ51 is the main pickup base〉・Share・Shiro：vs. τ、゛Since it is fixed, the pressing force of the slide plate is 4:′：yotsu c- Since the pickup base does not move, the operation feeling when ejecting is becomes good.

[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 loading state;
The figure is a top view similar to Figure 1 with the loading chassis removed, and Figure 3 is a plane view without showing the main chassis that constitutes this device and related parts. Figure 4 shows this device in 411i! Figure 5 is a plan view showing the big amplifier base and related parts; Figure 7 shows the mounting state of the pickup base. 8 to 11 are schematic plan views illustrating the shutter opening/closing operation over time as the disk cartridge is pushed forward, and FIGS. 12 to 14 are schematic plan views illustrating the locking operation of the slide plate over time as the disk cartridge is pushed forward. Schematic plan views explained in Figures 15 to 17
The figure is a schematic side view illustrating the lifting and lowering movement of the loading chassis over time as the slide plate is pushed forward, and Figures 18 to 20 are schematic side views illustrating the locking operation of the pickup base over time as the slide plate is pushed forward. A schematic side view and FIGS. 21 to 23 are a schematic plan view and a side view illustrating the upward and downward movement of the bias magnet over time as the slide plate is pushed forward. Explanation of symbols 1O: Main chassis 12: Pickup base 1
4: Loading chassis 16: Slide plate 20a
, 20b, 20c, 20d: side chassis 22a,
22b Nislide plate guide pin 30: Pickup base locking means 32: Arm 34: Positioning pin
36: Lock pin 38: Axis pin 39: Spring 56a
, 56b. 56c, 56d: Damper member 62a, 62b: Loading guide piece 64a, 64b, 64c. 64d: Positioning pin 65: Pick-up base rotor recess 66: Eject operation section 67a, 67b,
67c, 67d: Upright surface 70a. 70b = Guide groove 72: Spring 78 Guide groove 80:
Cam member for big up base lock 82 Ni slide plate lock member 84: Spring 90: Bias magnet 94: Slide piece for bias magnet 108: Arm 114: Shutter opening/closing arm 118a, l
18b, l 18c.

Claims (4)

[Claims] (1) A main chassis, a pickup base on which at least a pickup mechanism for recording and reproducing a 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; a first position for accommodating a disc cartridge and enabling recording and reproduction of the disc; a loading chassis that is movable between a second position separated from the pickup base and placed in a retracted state; an engaging portion provided on the loading chassis; and an engaged portion provided on the pickup base; 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 loading chassis 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: locking means for restricting movement of the pickup base with respect to the main chassis during a period in which the pickup base moves. (2) 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 pickup base to prevent 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 disk cartridge; and a first position and a pickup provided on the pickup base, where the loading chassis is capable of recording and reproducing a disk. a guide means for guiding the loading chassis so as to be movable between a second position separated from the base and in a retracted state; and a guide means movable to the main chassis to move the loading chassis between the first position and the 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; a support means provided on the pickup base so as to support the loading chassis in the first position; and the loading chassis is moved. A disk drive device comprising: locking means for restricting movement of the pickup base with respect to the main chassis during a period in which the pickup base is moved relative to the main chassis. (3) an arm in which the locking means is rotatably attached to the main chassis and has first and second engaging portions;
A first engaged portion provided on the slide plate so as to engage with the first engaging portion and rotate the arm when the loading chassis is in a first position; a second engaged portion provided on the pickup base so as to engage with the second engaging portion and lock the pickup base during a period of movement; 3. The disk drive device according to claim 1, further comprising a spring that biases the arm in a direction in which the engaged portion engages. (4) The disk drive device according to claim 2, 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.