JP3362410B2 - Disk cartridge mounting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge mounting apparatus applied to a magneto-optical disk apparatus for recording / reproducing information signals on / from a magneto-optical disk.

[0002]

2. Description of the Related Art For example, as a magneto-optical disk device for writing and / or reading an information signal to / from a magneto-optical disk rotatably housed in a cartridge, a disk cartridge is conveyed to a predetermined mounting position. It is composed of a loading mechanism, a rotary drive mechanism for rotating the magneto-optical disk at the mounting position, an optical pickup device for writing and reading information signals to and from the magneto-optical disk, and an external magnetic field generator.

The loading mechanism has a cartridge holder configured to hold the disc cartridge, and is configured to move and operate the cartridge holder using a cam or the like. In such a loading mechanism,
When the disc cartridge held in the cartridge holder is moved in a direction parallel to the chassis and conveyed right above the rotation drive mechanism, the disc cartridge is lowered in a direction close to the chassis. ing. The magneto-optical disk in the disk cartridge lowered in the direction close to the chassis is held by the rotation drive mechanism arranged on the chassis.

The rotary drive mechanism is composed of a spindle motor and a disk table fixed to the spindle shaft of the spindle motor, and is configured to hold the magneto-optical disk on the disk table for rotational operation. ing.

On the other hand, the optical pickup device and the external magnetic field generating device are respectively provided at positions facing each other with the magneto-optical disc mounted on the disc table sandwiched therebetween. The external magnetic field generator moves up and down with respect to the disc cartridge by an actuator or the like so as not to come into contact with the disc cartridge until the disc cartridge is transported to a predetermined mounting position and placed on the disc table. It is designed to do.

[0006]

By the way, in the above-mentioned magneto-optical disk device, since it is necessary to move the disk cartridge up and down with respect to the rotary drive mechanism, not only the vertical mechanism is complicated but also it is moved up and down. You need enough space. Similarly, the external magnetic field generator also has to be moved in and out of the signal recording surface of the magneto-optical disk as the disk cartridge is loaded. Need space.

For this reason, in the prior art, a mechanism has been proposed in which the spindle motor is raised relative to the disc cartridge when the disc cartridge is simply inserted into the cartridge holder and conveyed to a predetermined mounting position. Has been done. As the vertical movement mechanism,
For example, there is one in which a spindle motor can be moved up and down through a bearing on a guide shaft set up in a chassis, and the spindle motor is driven up and down by a motor or the like arranged on the chassis side.

However, if a bearing is used to move the spindle motor up and down along the guide shaft, the size of the device itself is inevitable because the bearing is large. Therefore, it becomes impossible to meet the recent demands for remarkable miniaturization and thinning. In addition, the cost of the bearing is very high, and thus the cost of the device is increased by itself.

Therefore, the present invention has been proposed in order to solve such a conventional technical problem, and provides a disk cartridge mounting apparatus which can be made compact and thin and which is inexpensive and highly reliable. The purpose is to

The disk mounting apparatus of the present invention positions the disk cartridge by sliding it in synchronization with the spindle motor which is moved up and down with the loading operation of the disk cartridge and the loading operation of the disk cartridge. It has a cartridge positioning means, an elevating mechanism for moving the spindle motor up and down, and a positioning means for positioning the spindle motor at a position where the spindle motor is raised, and the positioning means positions with a support member for supporting the spindle motor. Positioning pin and an engaging hole that engages with the positioning pin. When engaging the engaging pin and the engaging hole, a spacer is interposed between the engaging pin to position the spindle motor. In addition to trying It is obtained by adjusting the inclination of Ndorumota.

The elevating mechanism is driven by one motor when the disc cartridge is ejected,
The cartridge positioning means and the spindle motor may be driven.

Further, the recording / reproducing apparatus of the present invention comprises a head for recording / reproducing with respect to the disk housed in the cartridge, a head moving means for moving the head between the inner circumference and the outer circumference of the disk, A spindle motor that transmits a rotational driving force to a driven portion of a disk and a cartridge that is inserted by moving the cartridge in a one-dimensional direction and positions the inserted cartridge at a predetermined position without moving in another dimension. An elevating mechanism that elevates and lowers the cartridge positioning means and the spindle motor by sliding the cartridge positioning means and the disk cartridge in synchronization with the loading operation of the disc cartridge;
Positioning means for positioning the spindle motor at a raised position of the spindle motor, the positioning means positioning pin for positioning with a support member supporting the spindle motor, and an engagement hole for engaging the positioning pin. When the engagement pin and the engagement hole are engaged with each other, a spacer is interposed between the engagement pin to position the spindle motor and adjust the inclination of the spindle motor to adjust the cartridge. The spindle motor applies a rotational driving force to the driven portion of the disk in the cartridge positioned by the positioning means.

[0013]

In the present invention, when the spindle motor is raised by the elevating and lowering drive means, the position of the spindle motor is regulated by the positioning means at the raised position. As a result, the magneto-optical disk rotated by the spindle motor is stably rotated, and stable recording / reproducing of the information recording signal with respect to the magneto-optical disk can be performed.

Further, in the present invention, since the tilt adjusting means for adjusting the tilt of the spindle motor is provided, the tilt of the spindle motor at the raised position can be adjusted appropriately. As a result, so-called skew adjustment can be performed in which the optical axis of the objective lens is adjusted perpendicularly to the signal recording surface of the recording disk.

Further, according to the present invention, since the positioning member for positioning the spindle motor comprises the pin and the engaging hole with which the pin engages, the structure is extremely simple.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments to which the present invention is applied will be described in detail below with reference to the drawings. It should be noted that the present embodiment is an example in which the present invention is applied to a magneto-optical disk device for recording and / or reproducing on a magneto-optical disk.

First, a disk cartridge in which a magneto-optical disk mounted in this magneto-optical disk device is rotatably accommodated will be described.

[1] Construction of Disc Cartridge As shown in FIGS. 17 and 18, the disc cartridge 201 includes a magneto-optical disc 202 having a disc shape,
And a cartridge 203 that rotatably accommodates the magneto-optical disk 202.

The magneto-optical disk 202 has a magnetic recording layer in the data recording area, and can write and / or read information signals to / from the magnetic recording layer by magneto-optical means. Is. In this magneto-optical disk 202, one main surface portion is a signal recording surface. A disc-shaped chucking hub 202a made of a metal material to be chucked by the magneto-optical disc apparatus of this embodiment is provided at one central portion of the magneto-optical disc 202.

The cartridge 203 has a pair of upper and lower half halves 204 and 2 which are rectangular and have a size large enough to accommodate the magneto-optical disk 202 therein.
The upper half 204 and the lower half 20
5 and 5 are butted and joined together. And
The magneto-optical disk 20 is placed in the cartridge 203.
2 is stored rotatably.

The lower half 205 of the cartridge 203 has a chucking hub 202a provided at the center of the magneto-optical disk 202 and a signal recording surface of the magneto-optical disk 202 housed in the cartridge 203. A first opening 206 is provided to expose the part to the outside along the inner and outer circumferences. The first opening 20
The reference numeral 6 designates the cartridge 20 on one side surface 207 and the other side surface 208 of the cartridge 203 in the substantially central portion in the left-right direction.
3 is formed as a long hole from the front surface portion 209 side to the center portion thereof.

The first opening 206 is a disk of a rotary drive device for rotating the chucking hub 202a of the magneto-optical disk 202 when the disk cartridge 201 is mounted in the magneto-optical disk apparatus. While facing the table, the magneto-optical disk 2
The signal recording surface 02 is exposed to the optical pickup device that irradiates the signal recording surface with a laser beam.

On the other hand, a second opening 216 is formed in the upper half 204 at a position opposed to the first opening 206 provided in the lower half 205. This second
The opening 216 of the cartridge 203 is the front surface 2 of the cartridge 203.
The magneto-optical disk 2 is provided at a position close to the 09 side.
A part of the other main surface portion of 02 is formed in a rectangular shape with a size large enough to face outward along the inner and outer circumferences in the radial direction. The second opening 216 applies an external magnetic field to the other main surface portion of the magneto-optical disc 202 when the disc cartridge 201 is mounted in the magneto-optical disc device. It is designed to be exposed to a magnetic head.

The front surface 2 of the cartridge 203 is
09 so that the magnetic head and the optical pickup can easily approach the main surface portions of the magneto-optical disk 202 in close proximity to each other in the portions corresponding to the first opening portion 206 and the second opening portion 216. Notch recess 206a for forming
216a is provided respectively. That is, the thickness of the central portion in the vicinity of the front surface portion 209 of the cartridge 203 is such that the first opening portion 206 and the second opening portion 216 are the same.
It is made thin in each part corresponding to. As a result, when the disc cartridge 201 is loaded, the contact of the cartridge 203 with the magnetic head and the optical pickup is avoided, and these are arranged close to the signal recording surface of the magneto-optical disc 202.

A shutter member 211 for opening and closing the first opening 206 and the second opening 216 is slidably attached to the cartridge 203. The shutter member 211 is the first member of the lower half 205.
First shutter plate portion 212 for closing the opening 206 of the
And a second shutter plate portion 213 which is arranged in parallel and opposed to the first shutter plate portion 212 to close the second opening portion 216 of the upper half 204, and the first and second shutters. It is composed of a connecting piece portion 214 that connects the base end sides of the plate portions 212 and 213.

The first shutter plate portion 212 is formed as an elongated rectangular body having a narrow width sufficient to close the first opening portion 206 of the lower half 205. The front end side of the first shutter plate portion 212 is pressed and supported by a shutter pressing plate 215 attached to the outer surface of the lower half 205, and is prevented from rising from the cartridge 203. On the other hand, the second shutter plate portion 213 is
It is formed as a wide rectangular body large enough to close at least the second opening 216.

Then, the respective shutter plate portions 212, 21
The connecting piece portion 214 for connecting the three is the shutter member 21.
When the optical disc 1 is slid so that the magneto-optical disc 202 is exposed to the outside, the magneto-optical disc 202 is opened.
On the other hand, it is formed to have a thickness substantially equal to the thickness of the cartridge 203 in the central portion, which is thin in order to bring the magnetic head and the optical pickup into close proximity. Further, the other end of the torsion coil spring whose one end is locked in the cartridge 203 is locked to the connecting piece 214. That is, the torsion coil spring is used as the shutter member 21.
1 to the first opening 206 and the second opening 216.
Is always urged to move in the direction of closing the lid. It should be noted that the connecting piece portion 214 corresponds to the cartridge 2
The sliding contact of the shutter member 211 is made along the front surface portion 209 of the shutter member 03.

The shutter member 2 thus constructed
Reference numeral 11 denotes a position where the first opening 206 and the second opening 216 are closed, and the openings 206 and 216.
17 can be moved and operated in the direction of arrow X in FIG. And the cartridge 2
When the shutter member 211 is moved by a shutter opening pin provided on a cartridge holder described later, the shutter opening pin is fitted into the front surface portion 209 of No. 03, so that the first opening portion 206 and the first opening portion 206. A shutter opening member fitting portion 224 for opening the second opening 216 is formed. The shutter opening member fitting portion 224 is in a state where the first opening portion 206 and the second opening portion 216 are opened and the shutter member 21 is inserted.
It is formed as a substantially U-shaped cutout groove at a position facing the tip portion 219 of the first connecting piece portion 214.

Further, the lower half 205 has a cartridge positioning pin which is a cartridge positioning member for positioning the horizontal mounting position of the disc cartridge 201 when the disc cartridge 201 is mounted in the magneto-optical disc device. A pair of cartridge positioning pin engaging holes 225 and 226 are provided to mate with each other. Further, the lower half 205 is provided with an erroneous erasure prevention member 227 for selecting whether to write an information signal to the magneto-optical disk 202 in the vicinity of the one cartridge positioning pin engagement hole 226. There is. Further, a cartridge pull-in pin fitting hole 228 into which the cartridge hold pin provided in the loading mechanism of the magneto-optical disk device is fitted is formed in the front side of one side surface portion 207 of the cartridge 203. There is.

Next, a magneto-optical disk device for recording and / or reproducing on the magneto-optical disk 202 housed in the disk cartridge 201 having the above-mentioned structure will be described.

[2] Schematic Structure of Magneto-Optical Disk Device In this magneto-optical disk device, a disk cartridge 2 is provided.
01 for pulling 01 to a predetermined mounting position, a disc rotation driving mechanism for rotating the magneto-optical disc 202, and a cartridge positioning for positioning the disc cartridge 201 with respect to the disc cartridge 201 held at the predetermined mounting position. Means and disk rotation drive mechanism for the disk cartridge 201
An elevating mechanism that is moved up and down with respect to the magneto-optical disk 20.
2. An optical system for carrying out recording operation and / or reproducing of an information signal to / from the magneto-optical disk 202 by carrying out a radial transfer operation over the inner and outer circumferences of 2, and an external device when recording an information signal on the magneto-optical disk 202. A mechanism such as a magnetic head device that applies a magnetic field is provided.

[2-a] Disk Rotation Drive Mechanism As shown in FIG. 1, the disk rotation drive mechanism includes a spindle motor 1 which is vertically moved up and down with respect to the disk cartridge 201 by an up-and-down drive means described later. To have. As shown in FIG. 3, the spindle motor 1 is configured by incorporating a rotary drive motor (not shown) in a cylindrical spindle support member 2 whose side facing a chassis (not shown) is open. ing. In this spindle support member 2, the annular flat surface 2a opposite to the surface facing the chassis is a disk mounting surface on which the magneto-optical disk 202 housed in the disk cartridge 201 is mounted. ing. Then, in the spindle support member 2, the chucking hub 202a of the magneto-optical disk 202 can be held by a magnetic attraction force in the recess 3 formed as a circular recess at a position lower than the disk mounting surface 2a. A magnet 4 for adsorbing a disk is disposed to achieve the above.
The magnet 4 is formed as a disk having a size large enough to be housed in the recess 3 and has a spindle shaft insertion hole through which the spindle shaft 5 is inserted, at the center thereof. The spindle shaft 5 of the spindle motor 1
Is provided in the center of the recess 3 so as to project from the disc mounting surface 2a.

Further, as shown in FIG. 25, the spindle motor 1 together with the spindle support member 2 is moved in the contact / separation direction with respect to the disc cartridge 201 at opposite positions on the outer peripheral surface of the spindle support member 2. Second constituting a second raising / lowering drive unit described later for raising / lowering drive
A pair of arms 8 and 9 to which the pins 6 and 7 are attached are provided. These arms 8 and 9 are both provided on the outer peripheral surface of the spindle support member 2 at positions facing each other as rectangular plate-shaped members. Then, the second pins 6 and 7 constituting a second elevating and lowering drive unit are rotatably attached to the tip ends of the arms 8 and 9 by a second cam described later. These second pins 6 and 7 are
It engages with the second cam and is rotated along the inclined surface of the cam by the operation of moving the second cam.

Positioning pins 10 and 11 as positioning means for positioning the spindle motor 1 at a raised position on the arms 8 and 9 are provided.
Are provided with positioning pin engagement holes 12 and 13. The positioning pin engagement holes 12 and 13 are provided in order to accurately regulate the height position of the spindle motor 1.
It is formed as a circular through hole processed with high precision. Further, the positioning pins 1 are attached to the arms 8 and 9.
Recesses 16 and 17 with which positioning pin attachment members 14 and 15, which are fixed members to which 0 and 11 are attached, are formed. Bottom surfaces 16a, 17a of these recesses 16, 17
Is a reference surface that regulates the height position of the spindle motor 1 with high accuracy, and is an extremely smooth and flat surface. Further, tension coil springs 22 and 23 are provided on the arms 8 and 9 for ensuring a contact state between the second cam and the second pins 6 and 7 when the spindle motor 1 is raised. The tension coil springs 22 and 23 have one end hooked on the chassis and the other end hooked on one end of the arms 8 and 9. Therefore, the spindle motor 1 is always biased toward the chassis by the elastic force of the tension coil springs 22 and 23.

The concave portion 1 functioning as the above-mentioned reference surface
By providing spacers 20 and 21 which are disk-shaped tilt adjusting means having circular holes 18 and 19 larger than the positioning pin engaging holes 12 and 13 on the bottom surfaces 16a and 17a of 6 and 17, respectively, at the raised position. The inclination of the spindle motor 1 can be adjusted. As a result, so-called skew adjustment can be performed in which the optical axis of the objective lens is adjusted perpendicularly to the signal recording surface of the magneto-optical disk 202. Normally, for adjusting the optical axis of the objective lens, a drive mechanism (actuator) is provided by providing an adjustment mechanism in the optical pickup device.
The whole thing needs to be tilted and adjusted. However, in this example, since the inclination of the spindle motor 1 is adjusted by interposing the spacers 20 and 21, it is possible to eliminate the need for an optical axis adjusting mechanism of a large objective lens having a complicated structure.
Further, in this example, the skew adjustment can be easily performed only by interposing the spacers 20 and 21 as compared with the difficult work of the conventional method of adjusting the skew on the actuator including the objective lens.

On the other hand, positioning pin attaching members 14 and 15 provided with positioning pins 10 and 11 for regulating the height position of the spindle motor 1 are fixed on the chassis. The positioning pin attachment members 14 and 15 are
As shown in FIG. 26, the side surface is formed as a block having a substantially L shape, the base end portions 14 a and 15 a thereof are fixed to the chassis, and the tip end portions 14 b and 15 b are provided on the arms 8 and 9. The concave portions 16 and 17 are provided so as to face the concave portions. Positioning pins 10 and 11 that engage with the positioning pin engaging holes 12 and 13 are embedded in the tip ends 14b and 15b of the positioning pin attaching members 14 and 15, respectively. The positioning pins 10 and 11 have conical tips 10a and 11a so that they can be smoothly engaged with the positioning pin engagement holes 12 and 13, and the base ends 10b and 11b are the positioning pins. It has a cylindrical shape so that it can be securely fixed to the mounting members 14 and 15. In addition, the positioning pin 10, 11 is provided with the positioning pin engaging hole 1 between the tip end portion 10a, 11a and the base end portion 10b, 11b.
Disc-shaped flange portions 10c and 11c are provided that are in contact with the reference surfaces 16a and 17a at the peripheral edges of the openings 2 and 13, respectively. The flange portions 10c and 11c function as stoppers that positionally regulate the rising position of the spindle motor 1. Needless to say, similar effects can be obtained even if the positioning pins 10 and 11 are provided in the arms 8 and 9 and the positioning pin engaging holes 12 and 13 are provided in the positioning pin mounting members 14 and 15.

[2-b] Construction of Lifting Mechanism The lifting mechanism is a disk cartridge 20 held at a predetermined mounting position by a disk loading mechanism described later.
The cartridge positioning means for positioning the disk cartridge 201 with respect to the disk 1 and the disk rotation drive mechanism are moved up and down in the contact and separation direction with respect to the disk cartridge 201. As shown in FIG. 3, such an elevating mechanism has a slide member 28 that moves on the chassis while being guided by guide shafts 24, 25, 26, 27 fixed to predetermined positions on the chassis. The slide member 28 includes a pair of slide pieces 29 that are provided parallel to each other on both sides of the spindle motor 1 so as to sandwich the spindle motor 1.
30 and a connecting piece 31 for connecting the leading end portions of these slide pieces 29, 30.

The slide pieces 29, 30 are provided with guide shaft slide grooves 32, 33, 34, 35 in the shape of elongated holes at positions corresponding to the guide shafts 24, 25, 26, 27 fixed to the chassis. Has been formed. Further, as shown in FIG. 8, the slide pieces 29, 30 are engaged with the second pins 6, 7 to drive the spindle motor 1 up and down in the contact and separation directions with respect to the disk cartridge 201. Cams 36 and 37 are provided. These second cams 36, 37 are fan-shaped lifting operation pieces 38, 39 engaging with the second pins 6, 7, and locking pieces 40, which are locked by the slide pieces 29, 30. 41, and is rotatably attached about the support shafts 42 and 43 fixed to the chassis.

As shown in FIGS. 9 and 10, cam grooves 44 and 45 which engage with the second pins 6 and 7 are formed in the elevating operation pieces 38 and 39. The cam groove 44,
Reference numeral 45 denotes inclined portions 44a, 45a inclined at a predetermined inclination angle with respect to the chassis, and a parallel portion 44 parallel to the chassis.
b and 45b. The inclined portions 44a and 45a are
The parallel portions 44b and 45b correspond to the portions that serve to raise the spindle motor 1, and the parallel portions 44b and 45b that serve to make the spindle motor 1 at the maximum height position. On the other hand, the locking pieces 40, 41 function as a connecting member for rotating the second cams 36, 37 in synchronization with the movement of the slide member 28, and are formed on the slide pieces 29, 30. It has engaging pins 48 and 49 facing the engaging holes 46 and 47 which are long holes.

Further, as shown in FIG. 9, a slide plate return spring 52 for sliding the slide member 28 from the unloading position to the loading position is applied to the rear end edge of the one slide piece 30. A hook portion 53 is provided. Further, the loading motor 54 is provided at the rear edge of the one slide piece 30.
Is provided with a plate retracting piece 55 for forcibly retracting the slide member 28 from the loading position to the unloading position against the biasing force of the slide plate returning spring 52. The plate pullback piece 55 is adapted to engage with a cylindrical engagement pin 57 provided on a transmission gear 56 that transmits the rotation of the loading motor 54. That is, when the loading motor 54 rotates, the transmission gear 56 rotates, and the engagement pin 57 that is erected on the transmission gear 56 engages with the plate pullback piece 55 to load the slide member 28. It is designed to pull back from the position to the unloading position.

When the slide member 28 is set to the unloading position by the loading motor 54, as shown in FIG. 8, the trigger arm mounted rotatably about the support shaft 58 planted in the chassis. The locking claw 59a of 59 is adapted to engage with a slide member locking pin 60 provided at the rear end edge of the other slide piece 29 to hold the unloading state of the slide member 28. The above trigger arm 5
9 is a torsion coil spring 62 hung over the support shaft 58 and a trigger arm pin 61 that is erected on the trigger arm 59, so that the locking claw 59a is always in contact with the slide member locking pin 60. It is elastically urged in the engaging direction.

On the other hand, the connecting piece 31 is provided with first cams 50 and 51 which constitute a first elevating and lowering drive unit for elevating and lowering a cartridge positioning means for positioning a disk cartridge 201 which will be described later. As shown in FIGS. 9 and 10, the first cams 50 and 51 include inclined portions 50a and 5 that are inclined with respect to the chassis at a predetermined inclination angle.
1a and parallel portions 50b and 51b parallel to the chassis. The inclined portions 50a and 51a correspond to portions that serve to raise the spindle motor 1, and the parallel portions 50b and 51b correspond to portions that serve to make the spindle motor 1 the maximum height position. The inclination angle of the inclined portions 50a, 51a of the first cams 50, 51 is particularly the inclination angle of the second cams 36, 37 in order to raise the cartridge positioning means ahead of the spindle motor 1. It is made larger than the inclination angle of the portions 44a and 45a.

The cartridge positioning means, which is driven up and down by the first cams 50 and 51, engages with the cartridge positioning pin engagement holes 225 and 226 provided in the disk cartridge 201 to mount the disk cartridge 201 in the horizontal direction. It has cartridge positioning pins 63 and 64 for positioning. The cartridge positioning pins 63 and 64 are the cartridge positioning pin lifting block 6 provided on the chassis.
5, the cartridge positioning pin engaging holes 225, 22
It is provided so as to be embedded in a position facing 6 respectively. These cartridge positioning pins 63, 64
As shown in FIGS. 9 and 10, in order to smoothly engage with the cartridge positioning pin engagement holes 225 and 226, the tip end portions 63a and 64a thereof have a conical shape, and the base end portions 63b and 64b. Has a cylindrical shape so that it can be securely fixed to the cartridge positioning pin elevating block 65. Further, the cartridge positioning pins 63, 64 function as stoppers by contacting with the peripheral edge portions of the cartridge positioning pin engagement holes 225, 226 between the front end portions 63a, 64a and the base end portions 63b, 64b. Disk-shaped flanges 63c, 6
4c is provided.

Then, the cartridge positioning pin 6
The cartridge positioning pin elevating block 65 provided with 3, 64 has rotatably provided first pins 66, 67 which come into contact with the first cams 50, 51 provided on the previous slide member 28. . These first pins 66, 6
7 is engaged with the first cams 50 and 51, and the moving operation of the first cams 50 and 51 causes the cams 50 and 51 to be moved.
It is adapted to rotate along the inclined portions 50a and 51a. Further, the cartridge positioning pin elevating block 65 is provided with a temperature sensor 68 and a write protect switch 69 for detecting the position of the erroneous erasure prevention member 227 provided in the disk cartridge 201. The temperature sensor 68 is provided at a position close to one cartridge positioning pin 63, and the write protect switch 69 is provided at a position close to the other cartridge positioning pin 64.

Then, the cartridge positioning pin 6
3, 64, a temperature sensor 68, and a write protect switch 69 are provided on the cartridge positioning pin elevating block 65. It is designed to be driven up and down. In other words, the first pin 66, 67 is engaged with the first cam 50, 51 by the movement operation of the slide member 28, whereby the cartridge positioning pin elevating block 65.
Is driven up and down with respect to the disc cartridge 201 in the contact and separation directions.

[2-c] Configuration of Optical System and Magnetic Head Device The optical system is an objective lens 72 for converging and emitting a laser beam on the signal recording surface of the magneto-optical disk 202 rotated by the spindle motor 1. And an optical pickup device 73 having The optical pickup device 73, as shown in FIG.
The carriage 74 is provided on the carriage 74 so as to be radially movable over the inner and outer peripheries of the optical disc 02, and the objective lens 72 is arranged to face the signal recording surface of the magneto-optical disk 202 and is fed in the radial direction.

On the other hand, the magnetic head device has, as shown in FIG. 3, a magnetic head 75 having a coil for generating a magnetic field for applying an external magnetic field of a predetermined intensity to the signal recording surface of the magneto-optical disk 202. Become. The magnetic head 75 is attached to the front end of a head support arm 76 having a base end fixed to the carriage 15 so as to be provided at a position facing the objective lens 72 with the magneto-optical disk 202 interposed therebetween. . Therefore, the optical pickup device 73
Is sent in the radial direction of the magneto-optical disk 202, the magneto-optical disk 202 is kept in synchronization with this while the magnetic head 75 maintains the attitude facing the objective lens 72.
The transfer operation is performed in the radial direction over the inner and outer peripheries.

[2-d] Structure of Disc Loading Mechanism As shown in FIG. 2, the disc loading mechanism includes a cartridge holder 77 having an auto-injection mechanism for automatically pulling the disc cartridge 201 to a predetermined mounting position. To have. The cartridge holder 77
Is a cartridge insertion / removal opening 7 that functions as an insertion opening for the disk cartridge 201 that is provided penetrating in the front-back direction
8 is formed as a flat housing having a rectangular cross section. In addition, in the peripheral portion of the cartridge insertion / removal opening 78,
In order to facilitate the insertion of the disc cartridge 201 into the cartridge holder 77, a plurality of insertion guide pieces 79, 80 are provided in the vicinity of each corner.

The auto-injection mechanism provided in the cartridge holder 77 is the disk cartridge 20.
A first inject plate 81 slidable in the insertion / removal direction of the first injecting plate 8 and the first inject plate 8
The second injector plate 82, which is inserted into the cartridge retracting pin insertion hole 228 of the disc cartridge 201 by the movement of 1 to retract the disc cartridge 201, and the first injector plate 81 are forcedly moved to the depth of the cartridge holder 77. And a third injector plate 83 that slides in the direction.

The first injector plate 81 is
The lower plate portion 84 of the cartridge holder 77 is provided at a position facing the other slide piece 29 provided with the slide member locking pin 60. The first injector plate 81 is used for the cartridge holder 7
A pair of guide shafts 85, 86 to be planted on the lower plate portion 84 of
2 and the disc cartridge 201 is inserted into the cartridge holder 77 so that the disc cartridge 201 can be moved forward and backward as indicated by an arrow A in FIG. That is, at the positions corresponding to the guide shafts 85 and 86 of the first inject plate 81, the forward and backward operation guide grooves 87 and 88, which are elongated holes formed along the insertion direction of the disc cartridge 201, are provided. The guide shafts 85 and 86 are inserted into and engaged with the advancing / retreating operation guide grooves 87 and 88 so that the first injector plate 81 can be operated to advance / retreat.

The first inject plate 81 is provided with a notch 90 which engages with an inject plate operating pin 89 provided on a third inject plate 83 which will be described later. The notch 90
Is provided on the front end side extending to the cartridge insertion / removal opening 78, and is formed as a substantially U-shaped groove having one opening that is large enough to face the above-mentioned injector plate operating pin 89. Further, in the depth direction of the first injector plate 81, the cartridge holder 77
There is provided a cartridge contact portion 91 for abutting the shutter member 211 of the disc cartridge 201 to be inserted therein. The cartridge contact portion 91 is formed by a plate-like member that is bent so as to face the inside of the cartridge holder 77 from a notch (not shown) cut in the lower plate 84 of the cartridge holder 77. Further, a trigger arm rotating operation piece 92 that comes into contact with the trigger arm pin 61 provided on the trigger arm pin 61 is provided at the rear end edge portion of the first injector plate 81 in the depth direction.

On the other hand, the second injector plate 82
Is attached so as to be rotatable in the direction shown by arrow B in FIG. 3 with respect to the rotating shaft 93 that is planted on the rear end side of the first injector plate 81. Then, the cartridge insertion / removal opening 7 is attached to the second injection plate 82.
The cartridge hold pin 94 that engages with the cartridge pull-in pin fitting hole 228 of the disc cartridge 201 that is inserted into the cartridge holder 77 from No. 8
Has been planted. Such cartridge hold pin 9
4 is located outside the cartridge holder 77 in a state before the disc cartridge 201 is inserted into the cartridge holder 77. Then, when the disc cartridge 201 is inserted into the cartridge holder 77 and the cartridge pull-in pin fitting hole 228 and the cartridge hold pin 94 are located at positions opposite to each other, the second injector plate 82 is rotated and this insert plate 82 is rotated. The cartridge hold pin 94 set up on the eject plate 82 is adapted to be inserted into the cartridge pull-in pin fitting hole 228.

That is, in the unloading state, the cartridge hold pin 94 is located outside the cartridge holder 77 on the second injector plate 82, and the disc cartridge 201 is inserted into the cartridge holder 77. When the cartridge pull-in pin fitting hole 228 provided in 201 and the cartridge hold pin 94 face each other, the second injector plate 82 rotates to pull the cartridge hold pin 94 into the cartridge pull-in. A cam groove 95 is formed so as to be inserted into the pin fitting hole 228. Then, in the cam groove 95, the first injector plate 8 is provided.
The guide shaft 86 that is set up on the cartridge holder 77, which faces the advancing / retreating operation guide groove 88 provided on the rear side of 1, is inserted into and engaged with the cartridge holder 77.

The third injector plate 83 is
The first injector plate 81 is forcibly slid in the depth direction of the cartridge holder 77, and the lower plate portion 84 of the cartridge holder 77 is arranged in a direction substantially orthogonal to the insertion direction of the disc cartridge 201.
Further, it is rotatable about the support shaft 96. Then, at one end edge portion of the third injector plate 83, an injector plate operation pin 89 that engages with the cutout portion 90 provided in the first injector plate 81 is planted. Further, the other end edge portion of the third injector plate 83 comes into contact with the injector plate holding piece 97 which is formed by bending toward the holder 77 side at the tip end side of the one slide piece 30 of the slide member 28. The eject plate holding pin 98 is planted. Then, the third injector plate 83 is
A spring hooking portion 99 formed by cutting and raising the cartridge holder 77 and a spring hooking portion 100 formed on the third injector plate 83 are always pulled by a tension coil spring 101, and the direction is indicated by an arrow C in FIG. It is biased to rotate.

Further, the cartridge holder 77 has
A shutter opening device for automatically opening the shutter member 211 of the disc cartridge 201 inserted into the cartridge holder 77 through the cartridge insertion / removal opening 78 is provided. Such a shutter opening device is a shutter serving as a support member provided with a cam groove portion 103 formed mainly on the upper plate portion 102 of the cartridge holder 77 and a shutter opening pin 104 that is a shutter opening member that moves to face the cam groove portion 103. It is composed of an open pin support member 105.

The cam groove 103 is inserted into the cartridge holder 77, and the disc cartridge 201 is inserted.
The shutter member 211 of the disc cartridge 2
It is formed so as to draw a locus that opens in conjunction with the insertion operation of 01. That is, the cam groove portion 103
As shown in FIG. 4, a slanted portion 103a formed on the start end side slantingly slanted with respect to the insertion direction of the disc cartridge 201 (the direction indicated by the arrow D in the figure) and the slanted portion 103a are continuous And an arcuate portion 103b that forms an arc, and a linear portion 103c that is provided continuously to the arcuate portion 103b and that is provided on the rear end side that is substantially parallel to the insertion direction of the disc cartridge 201.

The inclined portion 103a of the cam groove portion 103 is
It plays the role of generating a component force for opening the shutter member 211 of the disc cartridge 201 inserted into the cartridge holder 77 through the cartridge insertion / removal port 78. The inclination angle θ of the inclined portion 103a is determined by inserting the disc cartridge 201 into the shutter opening pin 1.
In order to generate a component force to rotate 04, at least 2 in the insertion direction of the disc cartridge 201.
It is necessary to have an angle of 5 degrees or more.

The arcuate portion 103b provided continuously with the linear portion 103a serves to make the movement locus of the shutter opening pin support member 105 as small as possible. If such a portion is a straight line, the movement locus of the shutter opening pin support member 105 becomes large, and the rear end portion 105a of the shutter opening pin support member 105 bulges outward more than the cartridge holder 77 and rotates. However, there is a risk of contact with other members provided outside the cartridge holder 77. However, by forming the cam groove 103 in an arc shape as in this example, the movement locus of the shutter opening pin support member 105 becomes small, and the cartridge holder of the rear end edge portion 105 a of the shutter opening pin support member 105. The protrusion from 77 is suppressed as much as possible. As a result, other members provided on the outside of the cartridge holder 77 can be provided at a position close to the cartridge holder 77, and the magneto-optical disk device can be downsized.

On the other hand, the straight line portion 103c provided continuously with the arcuate portion 103b serves to move the disc cartridge 201 to the rear end portion of the cartridge holder 77 with the shutter member 211 being fully opened. By moving the disk cartridge 201 to the rear end of the cartridge holder 77 with the shutter member 211 opened, it is possible to avoid the contact between the magnetic head 75 and the optical pickup device 73 and the disk cartridge 201. A mechanism for moving the magnetic head 75 up and down can be omitted.

The shutter opening pin support member 105 is
Each of the front end portion 105b and the rear end portion 105a is formed as a plate-like body having a substantially rectangular shape in an arc shape, and the front end portion 105b has a shutter opening pin 104 facing the cam groove portion 103. The shutter opening pin 104 is formed as a columnar pin and hangs in the cartridge holder 77 via the cam groove 103. Also, this shutter opening pin support member 1
On 05, a slide groove 106 having an elongated hole shape is formed from the rear end portion 105a to substantially the central portion. A moving guide pin 108, which is an engaged portion that is movable along a guide portion 107 formed on the cartridge holder 77, engages with the slide groove 106. The guide portion 107 is provided in the cam groove portion 10 described above.
It is formed as a groove having a long hole shape provided in parallel with the straight line portion 103c of No. 3, and the moving guide pin 108 is movably faced. On the other hand, the movement guide pin 10
A disk-shaped flange 8 is provided at the upper and lower ends of a cylindrical pin having a size large enough to move toward the guide portion 107.

Then, the shutter opening pin support member 105 having the above-described structure is provided with the tension coil spring 109.
The shutter opening pin 10 indicated by the arrow E in FIG.
4 is always urged in the direction to position the cam 4 on the starting end side of the cam groove 103. That is, the tension coil spring 1
09, one end of the shutter opening pin support member 105
The shutter opening pin 104 is locked by the spring locking piece 110 provided in the above, and the other end is locked by the spring locking piece 111 formed by cutting and raising the upper plate portion 102 of the cartridge holder 77. The cam groove portion 103 is positioned at the starting position, that is, the initial position of the inclined portion 103a.

The position of the cartridge holder 77 is regulated so that the disc cartridge 201 to be inserted into the cartridge holder 77 is not inserted further inward than the loading position, which is a predetermined mounting position. A cartridge insertion position regulating member 112 for forming the cartridge is formed. The cartridge insertion position restricting member 112 is provided so as to project further rearward from the rear end edge of the upper plate portion 102, and the tip end portion thereof is bent and formed so as to hang inward of the cartridge holder 77. Further, the cartridge holder 77 is provided with a cutout portion 113 that faces the magnetic head 75 and the optical pickup device 73.

[3] Description of Disk Cartridge Mounting Operation The operation of mounting the above-mentioned disk cartridge in the magneto-optical disk apparatus configured as described above will be described. First, the disc cartridge 201 is inserted into the inside of the cartridge holder 77 through the cartridge insertion / removal opening 78 in the proper orientation. Then, as shown in FIG. 4, the shutter opening pin 104 held at the initial position contacts the front surface portion 209 of the disc cartridge 201.

When the disc cartridge 201 is further inserted in the cartridge holder 77 from this state, a component force is generated on the shutter opening pin 104 by being pushed by the disc cartridge 201, and the shutter opening pin 104 is pushed by the shutter opening pin 104. Inclined portion 10 of cam groove 103
It is moved along 3a. That is, when the disc cartridge 201 is pushed inwardly of the cartridge holder 77, the shutter opening pin support member 105 resists the urging force of the tension coil spring 109 hung across the cartridge holder 77 and the cartridge. The movable guide pin 108 at the initial position, which is one end side of the guide portion 107 provided on the holder 77, is rotated, and the shutter opening pin 104 provided on the tip portion 105b thereof is moved along the linear portion 103a of the cam groove portion 103. Move it.

As a result, the shutter member 211 opens the openings 206 and 216 of the disc cartridge 201 indicated by the arrow F in FIG. 5 against the biasing force of the torsion coil spring built in the cartridge 203. Is moved in the direction.

When the disc cartridge 201 is further inserted inward of the cartridge holder 77, the shutter opening pin 104 moves along the arcuate portion 103b of the cam groove portion 103 to further move the shutter member 211. When the shutter opening pin 104 moves along the arcuate portion 103b, the shutter opening pin support member 105 is at the initial position as when the shutter opening pin 104 moves along the inclined portion 103a. It will rotate around the movement guide pin 108. That is, from the inclined portion 103a to the arcuate portion 103b.
In the range where the shutter opening pin 104 moves over
Since the slide groove 106 is formed in the shutter opening pin support member 105, the movement guide pin 108 is in the initial position. Therefore, in the range from the inclined portion 103a to the arcuate portion 103b, the movement locus of the shutter opening pin support member 105 is extremely small, and the rear end portion 105a is at the disc cartridge 201.
It is designed so that it hardly jumps out.

When the shutter opening pin 104 reaches the rear end edge of the arcuate portion 103b, the shutter opening pin 104 is moved to the cartridge 203 as shown in FIG.
The shutter opening member fitting portion 224 provided in the. As a result, the opening 2 of the disc cartridge 201
06 and 216 are fully opened, and the magneto-optical disk 202 housed in the cartridge 203 is exposed.

Further, the disc cartridge 201
When is inserted inward of the cartridge holder 77, the movement guide pin 108 abuts on the front surface portion 209 of the cartridge 203 this time. When the disc cartridge 201 further moves inward of the cartridge holder 77, the shutter opening pin support member 105 together with the disc cartridge 201 is moved along the guide portion 107 while maintaining the state of FIG. .

Then, in the middle thereof, the disc cartridge 201 contacts the cartridge contact portion 91 of the first injector plate 81 slidably provided on the cartridge holder 77, as shown in FIGS. 8 to 10. Contact. When the disc cartridge 201 is further inserted inward from this state, the first injection plate 81 together with the disc cartridge 201 is moved along the guide shafts 85 and 86 fixed to the cartridge holder 77 in FIG. It slides in the insertion direction of the disc cartridge 201 indicated by the arrow G.

At this time, the second injector plate 82 is moved in the insertion direction of the disc cartridge 201 together with the first injector plate 81 as the first injector plate 81 slides. The second injector plate 82
The second injector plate 82 rotates in the direction of arrow H in FIG. 8 along the cam groove 95 provided on the.

As a result, the cartridge hold pin 94 provided on the second injector plate 82 is
As shown in FIGS. 11 to 13, a cartridge pull-in pin fitting hole 228 of the disc cartridge 201 is provided.
Get in.

Further, when the disc cartridge 201 is inserted into the cartridge holder 77, the trigger arm turning operation piece 92 provided on the rear end edge of the first injector plate 81 is It contacts the trigger arm pin 61 of the trigger arm 59 rotatably mounted on the chassis. Then, as the first injector plate 81 further moves to the rear end side, the trigger arm 59 rotates about the support shaft 58 in the arrow J direction in FIG. The engagement with the slide member locking pin 60 fixed to is released.

As a result, the slide member 28 is guided by the guide plate 24, 25, 26, 27 fixed to the chassis by the slide plate return spring 52 stretched over the cartridge holder 77 as shown in FIG.
Start sliding on the chassis toward the cartridge insertion / removal port 78 side indicated by the middle arrow K.

Then, the injector plate holding piece 97 provided on the slide member 28 and the injector plate holding pin 9 of the third injector plate 83.
8, the tension coil spring 101 which has been disengaged and is stretched between the cartridge holder 77 and the cartridge holder 77.
Thus, the third injector plate 83 is forcibly rotated about the support shaft 96 in the direction of arrow L in FIG. Then, when the third injector plate 83 is rotated, the injector plate operation pin 89 planted on the tip side of the third injector plate 83 is moved to the first injector plate 81.
Is indicated by an arrow M in FIG.
Slide it in the inserting direction.

As a result, at this point, the cartridge hold pin 9 of the second injector plate 82 has already been
Since 4 is inserted in the cartridge pull-in pin fitting hole 228 of the disc cartridge 201, the disc cartridge 201 is automatically pulled in the depth direction of the cartridge holder 77. Then, finally, the disc cartridge 20 is inserted into the cartridge insertion position regulating member 112 provided in the cartridge holder 77.
The first shutter member 211 contacts and the mounting position of the disc cartridge 201 is determined.

Further, by sliding the slide member 28 toward the cartridge insertion / ejection port 78 side, the engagement pins 48, which face the engagement holes 46, 47 provided in the slide pieces 29, 30 of the slide member 28, The second cams 36 and 37 having 49 at one end are rotated about the support shafts 42 and 43 in the directions of arrows N and O in FIG. 14, respectively. At the same time, the first cams 50, 51 provided on the slide pieces 29, 30 are moved to the cartridge insertion / ejection port 78 side.

Further, when the slide member 28 is slid toward the cartridge insertion / ejection port 78 side,
The second cams 36 and 37 contact the second pins 6 and 7 provided on the spindle support member 2 that supports the spindle motor 1, and the first pins 66 provided on the cartridge positioning pin elevating block 65, The first cams 50, 51 contact 67. Then, the slide member 2
The second pins 6 and 7 ascend while rotating on the inclined portions 44a and 45a of the second cams 36 and 37 with the movement of the second cam 36 and the inclined portions 50 of the first cams 50 and 51.
The first pins 66 and 67 ascend while rotating on a and 51a.

At this time, the inclination angles of the inclined portions 50a and 51a of the first cams 50 and 51 are set so that the second cam 3 has the same inclination angle.
Since the inclination angles of the inclined portions 44a and 45a of the cams 6, 37 are large, the first pins 66 and 67 are faster than the second pins 6 and 7, and the first cam 50 is , 5
The first parallel portion 50b, 51b is reached. As a result, the cartridge positioning pin raising / lowering block 65 is raised before the spindle motor 1, and the cartridge positioning pins 63, 64 provided in the cartridge positioning pin raising / lowering block 65 cause the cartridge positioning of the disc cartridge 201 to be performed. Pin engagement hole 2
25, 226, and the disk cartridge 20
Position 1.

After that, the second pins 6 and 7 reach the parallel portions 44b and 45b of the second cams 36 and 37, the spindle motor 1 is raised, and the light stored in the disc cartridge 201 is received. The spindle shaft 5 enters the chucking hub 202a of the magnetic disk 202.
Therefore, the magneto-optical disk 202 can be chucked accurately.

The ejector drives the loading motor 54 to drive the loading motor 5
The engaging pin 57, which is erected on the transmission gear 56 that transmits the rotation of 4, engages with the plate pulling back piece 55 provided on the slide member 28 to move the slide member 28 from the loading position to the unloading position. And pulls back against the biasing force of the slide plate return spring 52.

As a result, an operation completely opposite to the previous loading operation is performed, the spindle motor 1 is moved down toward the chassis prior to the cartridge positioning pin elevating block 65, and the slide member 28 is also moved.
In accordance with the sliding motion of the third inject plate 8
3 is rotated, the first inject plate 81 connected thereto is forcibly slid to the unloading state, and finally the disc cartridge 2
01 is forcibly ejected from the cartridge holder 77.

[4] Other Embodiments [4-a] Modification 1 of Second Cam As the second cam for moving the spindle motor 1 up and down,
In addition to the above, a cam having the same configuration as the first cams 50 and 51 for moving up and down the cartridge positioning pin elevating block 65 as shown in FIGS. 19 to 24 can be adopted.
One of the second cams 114 and 115 is shown in FIG.
As shown in FIG.
It has a and a parallel portion 115b parallel to the chassis, and is integrally provided on the slide member 28 facing the second pins 6 and 7. In particular, the inclination angle of the inclined portion 115a of the second cam 115 is higher than the inclination angle of the inclined portion 51a of the first cam 51 because the cartridge positioning pin elevating block 65 is raised before the spindle motor 1. Is also made small.

As a result, when the slide member 28 is slid toward the cartridge insertion / removal port 78 side, as shown in FIG.
As shown in FIG. 4, the first pin 67 climbs up the inclined portion 115a faster than the second pin 7, and the cartridge positioning pin elevating block 65 rises before the spindle motor 1 rises. Therefore, as in the previous embodiment, the spindle shaft 5 of the spindle motor 1 easily enters the chucking hub 202a of the magneto-optical disk 202, and accurate chucking is performed.

Further, by providing the second cams 114 and 115 with slits 118 as shown in FIG. 23,
Elasticity is imparted to the parallel portion 115b, and the spindle support member 2 is moved to the positioning pin 1 by the elastic force.
It may be pressed against 0 and 11. With this configuration, the arms 8 and 9 provided on the spindle support member 2
Bottom surfaces 16a and 17a of the concave portions 16 and 17 (corresponding to the reference surface that regulates the height position of the spindle motor 1) are embedded in positioning pin mounting members 14 and 15 fixed to the chassis as shown in FIG. Positioning pin 1
The spindle motor 1 is fixed by being pressed against 0 and 11. As a result, the spindle motor 1 is securely fixed at the predetermined height position, and the magneto-optical disk 202 rotated by the spindle motor 1 is operated.
In contrast, stable information signal recording / reproducing is performed. Further, since the slits 118 are provided in the second pins 114 and 115, the spindle motor 1 can be mounted on the positioning pin 1.
The area for pressing 0, 11 is unnecessary. If the cam 115 is made of a spring material having a high elasticity, a larger elastic force can be obtained and the spindle motor 1 can be fixed more reliably.

[4-b] Second Modified Example 2 of Second Cam Further, as the second cam 116, as shown in FIG. 27, one has the same shape as the first cams 50 and 51. A cam may be used. When the second cam 116 has the same shape as the first cams 50 and 51, in order to raise the cartridge positioning pin elevating block 65 prior to the spindle motor 1, the first pin 67 and the second pin It is necessary to shift the timing at which each of the first cam 51 and the second cam 116 contacts the pin 7 of FIG. For example, when the first cam 51 comes into contact with the first pin 67 and the first pin 67 climbs up to the midway portion of the inclined portion 51 a of the first cam 51, the second pin 6 is first exposed to the second pin 6. 2 cams 1
16 to touch. By doing so, the spindle motor 1 is raised after the cartridge positioning pin raising / lowering block 65 is raised first, and an accurate chucking operation can be performed.

[4-c] Modification 3 of Second Cam Further, as shown in FIGS. 28 to 30, the second cam is formed on the spindle support member 118 for supporting the spindle motor 1. Good. That is, the spindle support member 118 that supports the spindle motor 1 is formed in a rectangular parallelepiped shape, and a cam groove 119 having an inclined portion 119a inclined to the chassis and a parallel portion 119b parallel to the chassis is formed on the side surface thereof. The inclined portion 11 at this time
9a is for raising the cartridge positioning pin elevating block 65 ahead of the spindle motor 1,
It is made smaller than the inclination angle of the inclined portions 50a, 51a of the first cams 50, 51. On the other hand, the second pins 120 and 121 that engage with the cam groove 119 are provided on the support pieces 122 and 123 formed upright on the slide member 28.

With this structure, the spindle motor 1 is engaged by the engagement of the pin and the cam, as in the above-described embodiment.
The cartridge positioning pin elevating block 65 can be raised prior to the rising of the magneto-optical disk 202.
It is possible to perform an accurate chucking operation of.

[0088]

As is apparent from the above description, the disk cartridge mounting apparatus according to the present invention is provided with the positioning means for restricting the height position of the spindle motor, so that the spindle motor can be reliably specified. Can be held in height position. Therefore, the rotation of the magneto-optical disk rotated by the spindle motor is stabilized, and the writing / reading of the information recording signal to / from the magneto-optical disk can be accurately performed.

Further, in the disk cartridge mounting apparatus according to the present invention, the positioning member for positioning the spindle motor comprises the pin and the engaging hole with which the pin engages, so that the structure is extremely simple. Further, since the pin is smaller than the bearing, it is suitable for space saving, and the spindle motor and its peripheral portion can be downsized. Therefore, reduction in size and thickness of the entire device can be expected.

Further, in the disc cartridge mounting apparatus according to the present invention, since the tilt adjusting means for adjusting the tilt of the spindle motor is provided, the tilt of the spindle motor at the raised position can be adjusted appropriately.
That is, the so-called skew adjustment, which adjusts the optical axis of the objective lens perpendicularly to the signal recording surface of the recording disk, can be easily performed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an entire magneto-optical disk device.

FIG. 2 is a perspective view of a cartridge holder.

FIG. 3 is a perspective view of a lifting mechanism that drives a cartridge positioning unit and a disk rotation driving mechanism up and down.

FIG. 4 is a plan view showing an engaged state of the shutter opening pin and the disc cartridge when the disc cartridge is mounted on the cartridge holder.

FIG. 5 is a plan view showing a state in which the shutter member starts to be opened by the shutter opening pin in the mounted state of the disc cartridge to the cartridge holder.

FIG. 6 is a plan view showing a state in which a shutter member is opened by a shutter opening pin when the disc cartridge is mounted on the cartridge holder.

FIG. 7 is a plan view showing a state where a shutter member is fully opened by a shutter opening pin in a mounted state of a disc cartridge with respect to a cartridge holder.

FIG. 8 is a plan view showing an operating state of the lifting mechanism in the unloading state.

FIG. 9 is a right side view of the lifting mechanism in the unloading state.

FIG. 10 is a left side view of the lifting mechanism in the unloading state.

FIG. 11 is a plan view of the elevating mechanism when the slide member starts to slide.

FIG. 12 is a right side view of the elevating mechanism when the slide member starts to slide.

FIG. 13 is a left side view of the elevating mechanism when the slide member starts to slide.

FIG. 14 is a plan view showing an operating state of the lifting mechanism in the loading state.

FIG. 15 is a right side view showing the operating state of the lifting mechanism in the loading state.

FIG. 16 is a left side view showing the operating state of the lifting mechanism in the loading state.

FIG. 17 is a perspective view of the disc cartridge as viewed from the upper half side.

FIG. 18 is a perspective view of the disc cartridge as viewed from the lower half side.

FIG. 19 is a perspective view of an elevating mechanism in which a second cam of Modification 1 is provided on a slide member.

FIG. 20 is a plan view of an elevating mechanism in which a second cam of Modification 1 is provided on a slide member.

FIG. 21 is a right side view of the elevating mechanism showing a state in which the second cam of Modification 1 is loaded by the elevating mechanism provided on the slide member.

FIG. 22 is a partially cutaway front view of the elevating mechanism showing a state in which the second cam of Modification 1 is loaded by the elevating mechanism provided on the slide member.

FIG. 23 is an enlarged side view showing a second cam of Modification 1.

FIG. 24 is a side view showing a state where the second cam of Modification 1 starts to be loaded by the elevating mechanism provided on the slide member.

FIG. 25 is an enlarged perspective view showing a spindle motor.

FIG. 26 is an enlarged cross-sectional view of a positioning pin attachment member to which a positioning pin is attached.

FIG. 27 is a side view when the second cam of Modification 2 starts to be loaded by the elevating mechanism provided on the slide member.

FIG. 28 is a perspective view of an elevating mechanism in which a second cam of Modification 3 is provided on a spindle support member.

FIG. 29 is a plan view of an elevating mechanism in which a second cam of Modification 3 is provided on a spindle support member.

FIG. 30 is a side view when the second cam of Modification 3 is loaded by the elevating mechanism provided on the spindle support member.

[Explanation of symbols]

1 ... Spindle motor 2,118 ... Spindle support member 6,7 ... Second pin 8, 9 ... Arm 10, 11 ... Locating pin 12, 13 ... Positioning pin engagement hole 14, 15 ... Positioning pin mounting member 20, 21 ... Spacer 28 ... Slide member 36, 37 ... second cam 50,51 ... First cam 63, 64 ... Cartridge positioning pin 65 ... Cartridge positioning pin lifting block 66, 67 ... the first pin 72 ... Objective lens 73 ... Optical pickup device 77 ... Cartridge holder 81 ... 1st inject plate 82 ... Second injector plate 83 ... Third injector plate 103 ... Cam groove 103a ... Inclined part 103b ... Arc-shaped portion 103c ... Straight section 104 ... Shutter release pin 105 ... Shutter release pin support member 118 ... slit 201 ... Disk cartridge 202 ... Magneto-optical disk 202a ... chucking hub 211 ... Shutter member 225, 226 ... Cartridge positioning pin engagement hole 228 ... Hole for inserting the cartridge pull-in pin

─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-3-286480 (JP, A) JP-A-59-73621 (JP, A) JP-A-3-228229 (JP, A) JP-A-4- 79065 (JP, A) Actual flat 1-154558 (JP, U) Actual flat 1-162163 (JP, U) Actual flat 2-39361 (JP, U) Actual flat 2-84120 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G11B 25/04 101 G11B 17/04 411 G11B 19/20

Claims (3)

(57) [Claims] 1. A spindle motor which is driven up and down in accordance with a loading operation of a disc cartridge, and a disc motor which is slid in synchronization with the loading operation of the disc cartridge.
A positioning means for positioning the spindle motor, and a positioning means for positioning the spindle motor at a raised position of the spindle motor. The positioning means supports the spindle motor. support
Positioning pin for positioning with the member and the above positioning
It consists of an engagement hole that engages with the pin, and engages with the above-mentioned engagement pin.
When engaging with the hole, interpose a spacer on the engaging pin
Positioning of the spindle motor by
A disk cartridge mounting device in which the inclination of the spindle motor is adjusted while being adjusted . 2. The lift mechanism comprises the disc cartridge.
It is driven by one motor when ejecting
The cartridge positioning means and the spindle motor.
The disk cartridge mounting device according to claim 1, wherein the data cartridge is retracted . 3. A head for recording / reproducing to / from a disk housed in a cartridge, a head moving means for moving the head between an inner circumference and an outer circumference of the disk, and a rotary drive for a driven portion of the disk. A spindle motor for transmitting a force and a cartridge position determining means for inserting the cartridge by moving it in a one-dimensional direction and positioning the inserted cartridge at a predetermined position without moving it in another dimension. and in synchronism with the loading operation of the disc cartridge by being slid, the Katori
Position adjusting means and an elevating mechanism for elevating and lowering the spindle motor, and the spindle motor at a position where the spindle motor is elevated.
Positioning means for positioning the motor, the positioning means comprising a positioning pin for positioning with a support member for supporting the spindle motor and an engagement hole for engaging with the positioning pin. When engaging with the dowel, a spacer is interposed between the engaging pins to position the spindle motor, adjust the inclination of the spindle motor, and adjust the inclination of the spindle motor so that the inside of the cartridge positioned by the cartridge positioning means is positioned. A recording / reproducing apparatus configured to apply a rotational driving force to a driven portion of a disk by the spindle motor.