JPH06223474A - Disk cartridge loading mechanism - Google Patents

Abstract

PURPOSE:To perform good loading by securely preventing movement of a cartridge holder under the noninserting state of a disk cartridge. CONSTITUTION:A stopper arm 68 provided turnably on the cartridge holder 29 is hooked by a chassis wall part 85 on the initial state, thus preventing the cartridge holder 29 from moving. This stopper arm 68 is prevented from turning, in the direction of releasing the hooking with the chassis wall part 85 by a detecting arm 62 on the cartridge holder 29 to be turned by inserting of the disk cartridge 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc cartridge loading mechanism for conveying a disc cartridge to a mounting position in a disc recording and / or reproducing apparatus using a recording disc configured as a disc cartridge as a recording medium. .

[0002]

2. Description of the Related Art Conventionally, there has been proposed a disk recording and / or reproducing apparatus configured to record and / or reproduce an information signal by using a recording disk such as a so-called magneto-optical disk or optical disk as a recording medium. ..

Such a disc recording and / or reproducing apparatus is constituted by having an outer casing and a disc drive section arranged in the outer casing. The disk drive unit has a spindle motor, an optical pickup device, a magnetic head device, etc., and is configured such that when the recording disk is mounted, information signals can be written and / or read from the recording disk. Has been done.

In such a disc recording and / or reproducing apparatus, the recording disc is inserted into a disc insertion slit formed in the front panel portion of the outer casing, and the recording disc is inserted into the disc drive portion. It has been proposed to be configured to be worn.
This is a so-called front loading type disk recording and / or reproducing apparatus, which is configured to have a loading mechanism for carrying the recording disk between the vicinity of the disk insertion slit and the disk drive section. There is. Further, as the above-mentioned recording disk, there has been proposed one which is housed in a cartridge and configured as a disk cartridge. The cartridge is formed in a thin casing so that the recording disk can be rotatably accommodated therein.

A loading mechanism in a front-loading type disc recording and / or reproducing apparatus constructed to use the disc cartridge, that is, a disc cartridge loading mechanism, holds the disc cartridge by inserting the disc cartridge. It has a cartridge holder for. This cartridge holder is movably supported inside the outer casing, and by the movement operation means,
It is moved to the disk drive unit side while holding the disk cartridge. The cartridge holder conveys the disc cartridge onto the disc drive unit and mounts the disc cartridge on the disc drive unit.

Some front-loading type disk recording and / or reproducing apparatuses using the above-mentioned disk cartridge have an erroneous insertion preventing projection for preventing the erroneous insertion of the disk cartridge. The erroneous insertion means inserting the disk cartridge in an inverted state or inserting the disk cartridge in the wrong direction. The erroneous insertion preventing protrusion is provided on the inner side of the disc insertion slit so as to protrude inward. In order to prevent erroneous insertion with the erroneous insertion prevention protrusion, an erroneous insertion prevention groove is formed on the disc cartridge at a position corresponding to the erroneous insertion prevention protrusion along the insertion direction of the disc cartridge. Need to be kept. That is, when the disc cartridge is erroneously inserted, the erroneous insertion prevention protrusion does not enter the erroneous insertion prevention groove portion, but contacts the outer surface portion of the disc cartridge to prevent the insertion of the disc cartridge. To do.

As the loading mechanism, there is one having a cartridge tray on which the disk cartridge is placed and mounted, instead of the cartridge holder. The cartridge tray is moved and operated so as to extend outward from a position housed inside the disc recording and / or reproducing apparatus.
When the cartridge tray is moved to a position projecting to the outside of the disc recording and / or reproducing apparatus, the disc cartridge is placed, and the disc cartridge is positioned and supported. Then, the cartridge tray is carried into the disc recording and / or reproducing apparatus, and the disc cartridge is mounted in the disc drive section.

[0008]

By the way, in the disk cartridge loading mechanism having the erroneous insertion preventing protrusion as described above, the erroneous insertion preventing protrusion has the same loading operation as the cartridge holder. It is necessary to provide it on a member that moves together with the disk cartridge. When the erroneous insertion preventing protrusion is provided on the fixed portion such as the chassis or the outer casing, the disk cartridge passes over the erroneous insertion preventing protrusion when the loading operation is performed. Therefore, in this case, the erroneous insertion prevention groove portion extends from the front end portion to the rear end portion of the disc cartridge, that is,
It becomes necessary to provide it in an open state in both the front and the rear. Providing such a groove portion for preventing erroneous insertion makes it difficult to reduce the size of the disc cartridge.

However, if the erroneous insertion preventing protrusion is provided on a member that moves together with the disk cartridge in accordance with the loading operation, when the disk cartridge is erroneously inserted and is further pressed in the inserting direction by a strong external force. However, there is a possibility that a member such as a cartridge holder provided with the erroneous insertion preventing protrusion may be moved by the external force. If the member provided with the erroneous insertion preventing protrusion is moved by an external force when the disk cartridge is erroneously inserted, the erroneous insertion cannot be reliably prevented.

Further, in the disc cartridge loading apparatus having the disc insertion slit and the cartridge holder, when the disc cartridge is inserted and operated in a predetermined direction, the disc operating cartridge is moved by the moving operation means. It is necessary to start transportation. Therefore, in this disc cartridge loading mechanism, it is necessary to provide a detection switch for detecting that the disc cartridge has been inserted to a predetermined position. Therefore, the structure of this disk cartridge loading mechanism is complicated.

Therefore, the present invention has been proposed in view of the above situation, and a disc cartridge loading mechanism capable of reliably preventing erroneous insertion of a disc cartridge while simplifying the configuration. The purpose is to provide.

[0012]

In order to solve the above-mentioned problems and achieve the above-mentioned object, a disk cartridge loading mechanism according to the present invention has a disk cartridge movably supported with respect to a chassis and a disk cartridge inserted therein. A cartridge holder for holding the cartridge holder, moving operation means for moving the cartridge holder to a disk drive unit side for writing and / or reading an information signal to / from the recording disk of the disk cartridge, and movable to the cartridge holder. A cartridge insertion detection member that is disposed and is operated by being pressed by the disc cartridge when the disc cartridge is inserted into the cartridge holder, and a cartridge that is movably disposed with respect to the cartridge holder and hooked on the chassis. Be done And a stopper member having a engaging projection that engages the locking portion and the disc cartridge,
When the disc cartridge is not inserted in the cartridge holder and the latching portion is latched by the chassis, the stopper member locks the latching portion by the chassis by the cartridge insertion detecting member. When the movement in the releasing direction is blocked, the disc cartridge is inserted into the cartridge holder and the cartridge insertion detecting member is moved, the blocking by the cartridge detecting member is released, and the cartridge holder Along with the movement to the disk drive portion side by the movement operation means, the sliding operation is performed in a direction in which the chassis is slidably contacted and the chassis is released from the latching portion, and the latching protrusion is engaged with the disc cartridge. It is made to engage with the recess.

Further, in the disc cartridge loading mechanism according to the present invention, in the above-mentioned disc cartridge loading mechanism, the cartridge holder has an erroneous insertion preventing projection which is inserted into an erroneous insertion preventing groove of the disc cartridge. This misinsertion prevention protrusion
When the disc cartridge is inserted into the cartridge holder in a state in which the erroneous insertion preventing protrusion does not enter the erroneous insertion preventing groove, the disc cartridge is brought into contact with the disc cartridge to prevent the disc cartridge from being inserted. The operation of moving the cartridge insertion detecting member by the cartridge is prevented.

[0014]

In the disk cartridge loading mechanism according to the present invention, there are a hooking portion that is movably arranged with respect to the cartridge holder into which the disk cartridge is inserted and that is hooked to the chassis, and a hooking protrusion that is hooked to the disk cartridge. The stopper member having is disposed movably with respect to the cartridge holder when the disc cartridge is not inserted in the cartridge holder and the latching portion is latched by the chassis. When the disc cartridge is inserted, the cartridge insertion detection member that is pressed and moved by the disc cartridge,
Since the chassis is prevented from moving in the direction of releasing the latching with respect to the latching portion, the cartridge holder is prevented from moving even when an external force is applied to the cartridge holder.

When the disk cartridge is inserted into the cartridge holder and the cartridge insertion detecting member is moved, the stopper member releases the blocking of the movement by the cartridge detecting member, and the stopper member of the cartridge holder is released. Along with the movement, it slides in contact with the chassis and moves in a direction in which the engagement of the chassis with the engagement part is released, and the engagement projection engages with the engagement recess of the disc cartridge, so that the cartridge holder can be moved. At the same time, the positional relationship between the cartridge holder and the disc cartridge is maintained.

In the above-mentioned disc cartridge loading mechanism, when the cartridge holder is provided with an erroneous insertion preventing protrusion that is inserted into the erroneous insertion preventing groove of the disc cartridge, the erroneous insertion preventing protrusion is erroneous. When the disc cartridge is inserted into the cartridge holder in a state where the insertion preventing protrusion does not enter the erroneous insertion preventing groove, the disc cartridge is brought into contact with the disc cartridge to prevent the disc cartridge from being inserted. Since the movement operation of the cartridge insertion detecting member is prevented, erroneous insertion of the disk cartridge is prevented, and even when external force is applied to the cartridge holder due to this erroneous insertion, the stopper member causes the cartridge holder to move. Prevents movement and ensures correct insertion To stop.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. In this example, the present invention is applied to a disk recorder device that records and reproduces information signals using a magneto-optical disk housed in a cartridge as a recording medium.

[1] [Outline of Disk Recorder Device] As shown in FIG. 1, this disk recorder device is configured to have a floating chassis 12 which is a chassis housed in an outer housing 1. The outer casing 1 has a main body formed of a material such as a synthetic resin or a metal in the form of a housing having an open front side, and a front panel section 2 closing the open front side of the main body. It is configured. A disc cartridge insertion slit 3 is formed in the front panel portion 2. This disc cartridge insertion slit 3
Is closed from the inside by the lid 4. The disc cartridge insertion slit 3 is formed with the longitudinal direction being horizontal. The front panel 2 has a power button 7, an eject button 5, a record button 10, a play button 8, a stop button 9, and a volume control button 1.
1, a display window portion 6 and the like are provided. The buttons, 5, 7, 8, 9, 10 and the volume control camera 11 and the display window section 6 are housed in the outer casing 1 and connected to an electronic circuit section (not shown) constituting the disk recorder device. There is.

That is, in this disc recorder device, the main power source can be turned on by the power button 7, the disc cartridge can be inserted through the disc cartridge insertion slit 3 and mounted on the floating chassis 12. The recording mode can be selected and executed by pressing the recording button 10, and the reproduction mode can be selected and executed by pressing the reproduction button 8. The display window section 6 is configured to have a photoelectric tube for displaying characters, numbers, symbols, etc., a liquid crystal display device (LCD), etc., so that the recording continuation time, the program number, the program name, etc. can be displayed. Is configured. The display window 6 is
It is arranged on the lower side of the disc cartridge insertion slit 3.

In this disc recorder device, the power source circuit, the output circuit, and the like, which serve as heat sources in the outer casing 1, are disposed on the rear side of the floating chassis 12. Further, the outer casing 1 has a large number of slits (not shown) for heat dissipation, which are formed on the rear side portion corresponding to the positions where the heat sources are arranged. That is, in this disc recorder device, conduction of heat generated by the heat source to the disc cartridge on the floating chassis 12 and the optical pickup device described later is blocked by the outer wall portion of the floating chassis 12.

[2] [Structure of Disc Cartridge] As shown in FIGS. 32 and 33, the disc cartridge is configured such that a magneto-optical disc 203, which is a recording disc, is rotatably housed in the cartridge 202. The disc cartridge 201 is used for recording and reproducing information signals. The magneto-optical disk 203 is formed by depositing a magnetic material on a disk substrate, and is locally heated to a Curie temperature of the magnetic material or higher by irradiation with a laser beam or the like.
Information signals are written by applying an external magnetic field. Further, the magneto-optical disk 203 irradiates a linearly polarized light flux such as a laser light flux, and detects a change in the polarization direction due to the Kerr effect of the linearly polarized light flux.
The information signal can be read. This magneto-optical disk 203
A chucking hole 205 is formed in the center of the. The chucking hole 205 is closed by a chucking plate 206.

The cartridge 202 is formed in a thin casing having a rectangular main surface corresponding to the thickness and diameter of the magneto-optical disk 203. This cartridge 202
Has openings 207 and 208 at positions facing each other on the upper and lower main surface portions. These openings 20
Reference numerals 7 and 208 expose a part of the main surface portion of each side of the magneto-optical disk 203 over the inner and outer circumferences to the outer side. Also,
A chucking opening 216 for exposing the chucking hole 205 to the outside is formed in the center of the main surface on the lower surface side of the cartridge 202. The openings 207 and 208 are provided on the shutter member 21 slidably attached to the cartridge 202.
By 0, it can be opened and closed. The shutter member 210 is formed by bending a thin plate-like member into a U-shape, and the opening portions 20 are formed by the flat plate-like portions on both end sides.
The lids 7 and 208 can be closed. The shutter member 210 is supported by the central portion at one side edge of the cartridge 202 so as to be slidable in the front-rear direction as indicated by an arrow T in FIG. This cartridge 202
A groove portion 209 for supporting the shutter member 210 is provided at one side edge portion thereof. The shutter member 2
The cartridge 10 is supported by the cartridge 202 with a protruding piece portion 212 protruding from the central portion along the groove portion 209. Further, a hooking hole 211 is formed at the central portion of the shutter member 210 and at a position above one side edge of the cartridge 202.

An erroneous insertion preventing groove 220 is provided on the other side edge of the cartridge 202. The erroneous insertion preventing groove 220 is opened to the front side with respect to the front end surface of the cartridge 202, and is formed up to the middle of the other side edge portion of the cartridge 202.

Further, as the above-mentioned disc cartridge, as shown in FIGS. 34 and 35, it is possible to use the one constituted by rotatably housing the optical disc 223 which is a recording disc in the cartridge 222. The disc cartridge 221 is used only for reproducing information signals. The optical disc 223 is
A reflective layer made of aluminum or the like is adhered and formed on a disk substrate. The disc substrate of the hole disc 223 is formed with fine irregularities, that is, pits, according to the information signal by means such as injection molding. The optical disc 223 can read an information signal by irradiating coherent light such as a laser beam and detecting a variation in the amount of reflected light due to scattering or interference of the coherent light in the pits. A chucking hole 205 is formed at the center of the magneto-optical disk 223. The chucking hole 205 is closed by a chucking plate 206.

The cartridge 222 of the disc cartridge 221 is formed in a thin casing shape whose main surface portion is rectangular corresponding to the thickness and diameter of the optical disc 223. The cartridge 222 has an opening 208 on the lower main surface. The opening 208 faces a part of the inner surface and the outer surface of the main surface portion on the lower surface side, which is the signal reading surface of the optical disc 223, toward the outer side. A chucking opening 216 for exposing the chucking hole 205 to the outside is formed in the center of the main surface of the lower surface of the cartridge 222. The opening 208 can be opened and closed by a shutter member 230 slidably attached to the cartridge 222. The shutter member 230 is formed by bending a thin plate member into an L shape, and is configured such that the opening 208 can be closed by a flat plate portion on one end side. The shutter member 230 is slidably supported at the other end on one side edge of the cartridge 222. A groove 209 for supporting the shutter member 230 is provided at one side edge of the cartridge 222. The shutter member 230 is supported by the cartridge 222, with a protruding piece portion 212 protruding from the other end side thereof being aligned with the groove portion 209. Also,
An engaging hole 211 is formed at the other end portion of the shutter member 230 and at a position above one side edge of the cartridge 222.

The cartridge 222 is also provided with the erroneous insertion preventing groove 220 located at the other side edge portion. The erroneous insertion preventing groove 220 is open to the front side with respect to the front end surface of the cartridge 222, and is formed up to the middle of the other side edge portion of the cartridge 222.

Then, each of the above disk cartridges 20
A pair of positioning holes 213, 214 and a pair of engaging recesses 218, 219 are formed in the main surface portion on the lower surface side of the cartridges 202, 222 of 1, 221, respectively. The pair of positioning holes 213 and 214 are formed in front and back in the insertion direction of the disc cartridges 201 and 221. In addition, the pair of engaging recesses 218, 219
Are formed on both side edges of the front portion in the insertion direction of the disc cartridges 201 and 221.

Further, each of the above-mentioned cartridges 202 and 222
Is configured such that the distance from the bottom of the erroneous insertion prevention groove 220 to the bottom of the groove 209 is shorter than the length in the front-rear direction in the insertion direction.

[3] [Supporting Structure of Floating Chassis] The floating chassis 12 of the disk recorder device is
As shown in FIG. 1, the horizontal plate portion 107 and the horizontal plate portion 1
07 has one side plate portion 13 and the other side plate portion 14 which are vertically attached to the horizontal plate portion 107 at both side edge portions and are made of a metal plate material or the like. As shown in FIG. 6, a pair of front and rear support protrusions 17 and 18 are provided on the one side plate portion 13 so as to protrude outward. In addition, the other side plate portion 14 includes a pair of front and rear support projections 1
5 and 16 are provided so as to project outward. A damper fitting hole 20 is formed in each of the support protrusions 15, 16, 17, and 18. These damper fitting holes 20
As shown in FIG. 31, the dampers 19 are fitted and disposed in the respective parts. These four dampers 19 in total are for floating and supporting the floating chassis 12 with respect to a fixed chassis 26 fixedly arranged in the outer casing 1.

The damper 19 corresponds to the fixed chassis 26.
A support shaft portion 21 supported by screwing the base end side thereof, a rubber cylinder 23 externally fitted to the support shaft portion 21, and a rubber cylinder 23.
And a coil spring 24 wound on the outside. Further, a ring member 22 made of a low friction material such as synthetic resin is disposed between the support shaft portion 21 and the rubber cylinder 23. Each of the above-mentioned supporting protrusions 15, 16, 1
Nos. 7 and 18 have the damper fitting hole 20 fitted with the tip end side portion of the rubber cylinder 23. An inner edge portion of the damper fitting hole 20 engages with an engaging groove portion 25 formed at a tip side portion of the rubber cylinder 23 and is supported by the rubber cylinder 23.

The floating chassis 12 thus supported by the dampers 19 is moved in the horizontal direction parallel to the fixed chassis 26 indicated by the arrow S in FIG. 31 by the coil spring 24 and the rubber tube 23. The fixed chassis 2 is prevented from moving and is indicated by an arrow R in FIG.
It can be moved in the vertical direction perpendicular to 6, and is supported while being protected from vibrations and impacts propagating from the outside.

[4] [Configuration of Disc Cartridge Loading Mechanism (1)] A disc cartridge loading mechanism is constructed on the floating chassis 12. As shown in FIGS. 1 and 2, the disk cartridge loading mechanism is located at an inner side portion of each of the side plate portions 13 and 14 and above the flat plate portion 107.
It has a pair of left and right cam plates 27, 28 slidably supported with respect to 3, 14. As shown in FIG. 7, the one-side cam plate 27 has a pair of front and rear support pins 77, 78 associated with the first and second support slits 82, 84 formed in the one-side plate portion 13. And is supported by the one side plate portion 13. The first support slit 82 is linearly formed in the front-rear direction from the front end side of the one side plate portion 13 to a midway portion. The second support slit 84 is provided on the one side plate portion 1.
3 is formed in a straight line in the front-rear direction from the middle portion to the rear end side, and the vicinity of the rear end portion is bent at a right angle to the lower side, that is, the flat plate portion 107 side. Further, as shown in FIG. 8, the other side cam plate 28 has a pair of front and rear support pins 77, 78 inserted through the support slits 79, 81 formed in the other side plate portion 14 in a corresponding manner. , Is supported by the other side plate portion 14. The first support slit 7
9 is formed in a straight line in the front-rear direction from the front end side of the other side plate portion 14 to an intermediate portion. The second support slit 81 is linearly formed in the front-rear direction from the midway portion of the other side plate portion 14 to the rear end side, and the vicinity of the rear end portion is the lower side, that is, the flat plate portion. It is bent at a right angle to the 107 side.

Each of the cam plates 27 and 28 has a pair of front and rear cam grooves 73 and 74 and a rack gear portion 76, respectively. The front cam groove 73 has a front horizontal portion, a rear horizontal portion formed at a position higher than the front horizontal portion, that is, at a position separated from the flat plate portion 107, and the front horizontal portion. It is formed in the front side portion of each of the cam plates 27, 28 having a slant portion extending from the rear end portion of the horizontal portion to the front end portion of the rear side horizontal portion. The rear side cam groove 74 has the same shape as the front side cam groove 73 and is formed in the rear side portion of each of the cam plates 27 and 28. The rack gear portion 76 includes the cam plates 27, 2
It is formed in the lower edge portion of 8 from the front end portion to the rear end portion.

An engaging hole 75 is formed in the one side cam plate 27, located between the cam grooves 73 and 74. The engagement hole 75 is formed as a long hole whose longitudinal direction is the front-rear direction, and the rear edge portion has the cam grooves 73, 74.
The inclined portion substantially corresponds to the inclined portion of.

A head operating cam groove 109 is formed on the other side cam plate 28 from the midway portion to the rear end side portion. The head operation cam groove 109 is formed in a straight line in the front-rear direction, and the vicinity of the front end is on the upper side, that is,
The head operating portion 110 is bent at a right angle in the direction away from the flat plate portion 107.

Then, between the cam plates 27 and 28,
A loading plate 29, a cartridge holder 30, and a slider plate 31, which form a disc loading mechanism, are arranged.

The loading plate 29 is the flat plate portion 1
It is formed in a flat plate shape having substantially the same size as 07, and both side portions are bent downward. A pair of left and right support pins 32, 33 are provided on the side surface portion of the loading plate 29, that is, on the outer side portions of both side portions bent downward.
34 and 35 are projected. As shown in FIG. 7, the front support pin 32 on the one side is inserted into the front cam groove 73 of the one side cam plate 27, and the one side plate portion 1 is further inserted.
It is inserted into the third support slit 83. The third support slit 83 is linearly formed in the front-rear direction from the front side of the one side plate portion 13 to a midway portion, and the vicinity of the rear end portion is bent at a right angle downward. . The rear side support pin 33 on the one side is provided on the one side cam plate 27.
It is inserted into the rear cam groove 74, and is further inserted into the second support slit 84 of the one side plate portion 13.
Then, as shown in FIG. 8, the front support pin 34 on the other side is inserted into the front cam groove 73 of the other side cam plate 28, and further the third support of the other side plate portion 14 is performed. It is inserted through the slit 80. This third support slit 80
Is linearly formed in the front-rear direction from the front side of the other side plate portion 14 to a midway portion, and the vicinity of the rear end portion is bent at a right angle to the lower side. The rear support pin 35 on the other side is inserted into the rear cam groove 74 of the other side cam plate 28, and is further inserted into the second support slit 81 of the other side plate portion 14. .

That is, the loading plate 29 is slidably supported by the side plate portions 13 and 14 in the front-rear direction via the support pins 32, 33, 34 and 35, and the cam plates 27 and 28 are also supported. Is moved in the front-back direction, the third and second support slits 80, 81,
A movement operation is performed in the front-rear direction along 83 and 84. Further, the loading plate 29 includes the support pins 32,
When 33, 34, and 35 are positioned at the rear end portions of the third and second support slits 80, 81, 83, and 84, they descend downward, that is, in the direction in which they approach the flat plate portion 107. Can be moved.

The loading plate 29 has a first opening 36 in the other side portion which occupies approximately half the area of the loading plate 29. Further, the loading plate 29 has a second opening 43 at one side portion.

The cartridge holder 30 is formed in a substantially flat plate shape having a width corresponding to substantially the entire width of the loading plate 29, and the cartridge holding portion is formed by bending both side portions downward in a hook shape. By having 53 and 54, the disc cartridges 201 and 221 can be held. The cartridge holder 30 is arranged below the loading plate 29. When the disc cartridges 201 and 221 are inserted from the front side of the cartridge holder 30,
The cartridges 202 and 222 of the disk cartridges 201 and 221 are positioned and held between the main surface portion and the cartridge holding portions 53 and 54. The cartridge holder 30 has support holes 40, 4 formed at the left and right positions and the central portion of the front portion of the loading plate 29.
Support rods 37, 38, 39 inserted corresponding to 1, 42
It is suspended from and supported by the loading plate 29 via the. The lower end portions of the support rods 37, 38, 39 are fitting holes 58, 59, 6 formed at the left and right positions and the central portion of the front portion of the cartridge holder 30.
It is inserted and engaged corresponding to 0. The cartridge holder 30 is movable with respect to the loading plate 29 in the vertical direction over a distance of about the length of each of the support rods 37, 38, 39.

The cartridge holder 30 has an opening 5 corresponding to the first opening 36 of the loading plate 29.
Have one. In addition, this cartridge holder 30
Has a cartridge positioning wall portion 61 formed at the rear edge portion by bending the rear edge side portion of the cartridge holder 30 downward.

A shutter opening lid claw 173 and a shutter closing lid claw 56 are arranged in the holding portion 54 on the other side of the cartridge holder 30 toward the inner side of the cartridge holder 30. The shutter opening claw 173
Are integrally provided so as to project from the side wall portion that forms the holding portion 54, and enter the groove portion 209 of the cartridges 202 and 222. The shutter closing claw 56
Is a hook-shaped bent front end side portion of a lever member rotatably supported on the side wall portion of the holding portion 54, and a cartridge holder 30 is provided via a slit portion 55 formed on the side wall portion. Entering inside. This shutter closing claw 5
6 is a torsion coil spring 57 arranged between the cartridge holder 3 and the cartridge holder 30.
It is urged toward 0. The shutter closing claw 56 is used for the disc cartridges 201, 221.
The shutter members 210 and 230 are adapted to enter and engage with the engaging holes 211.

The holding portion 53 on one side of the cartridge holder 30 faces the inner side of the cartridge holder 30, that is, the shutter opening claw 173.
An erroneous insertion preventing protrusion 180 is provided so as to face the. The erroneous insertion preventing protrusion 180 is provided on the holding portion 5
3. The disk cartridges 201, 22 are integrally provided on the cartridge holder 30 so as to project from the side wall.
When the cartridge 1 is inserted from the front side, the cartridge 2
02 and 222 are adapted to enter the erroneous insertion preventing groove 220.

The slider plate 31 is formed in a flat plate shape having a size substantially corresponding to a half portion on one side of the cartridge holder 30, and the upper surface of the cartridge holder 30 causes the slider plate 31 to move in the front-back direction within a predetermined range. It is possible to slide and supported. That is, this slider plate 31
Are sandwiched between one side portion of the loading plate 29 and one side portion of the cartridge holder 30. The slider plate 31 has a tension coil spring 49 stretched between a spring retaining piece projecting from the rear side portion and a spring retaining piece 50 projecting from the rear edge of the cartridge holder 30. As shown by the arrow D in FIG.
The cartridge holder 30 is elastically biased in a direction of moving rearward. The tension coil spring 49 is disposed inside an opening 52 formed in one side portion of the cartridge holder 30.

On the other edge of the slider plate 31, a pressed piece 47 is provided with a part of the slider plate 31 bent downward. The pressed piece 47 enters the cartridge holder 30 through the opening 51 of the cartridge holder 30. This pressed piece 4
7, the slider plate 31 is the tension coil spring 4
In the initial state of being located on the front side of the cartridge holder 30 against the biasing force of the slider 9, the slider plate 3 is located on the front side of the cartridge positioning wall portion 61.
When 1 is moved to the rear side of the cartridge holder 30, it is moved to a position flush with the cartridge positioning wall portion 61.

An operating pin attachment piece 44 is provided at one edge of the slider plate 31 by bending a part of the slider plate 31 upward. The operation pin attachment piece 44 has an operation pin 45.
However, it is projected toward the outside. This operation pin 45
Through the second opening 43 of the loading plate 29 to the side of the one side cam plate 27, the support pins 32,
22 and the engaging hole 7 of the cam plate 27 on one side.
It has entered within 5.

On the slider plate 31, there are provided a cartridge insertion detecting arm 62 serving as a cartridge insertion detecting member and a stopper arm 68 serving as a stopper member.
It is rotatably attached. The cartridge insertion detection arm 62 has a mounting hole 63 on the base end side, and the mounting pin 66 inserted into the mounting hole 63 is inserted into and engaged with the mounting hole 174 of the slider plate 31. It is attached to the slider plate 31. The cartridge insertion detecting arm 62 has an abutting portion 65 on the front end side. As shown in FIG. 6, the abutting portion 65 is provided between the cartridge holder 30 and the one side cam plate 27. It is projected to the position where. Further, the cartridge insertion detection arm 62 has a cartridge contact pin 170 in the middle. This cartridge contact pin 170
Are protruded downward and enter the cartridge holder 30.

The cartridge detecting arm 62 is provided with a torsion coil spring 67 as shown by an arrow C in FIG.
The contact portion 65 is rotationally biased in a direction to move it to the front side. In the torsion coil spring 67, the coil portion is wound around the mounting pin 66, one arm portion is hooked by a spring hooking piece 46 projectingly provided on the slider plate 30, and the other arm portion is hooked. The cartridge detection arm 62
It is hooked on a spring hooking piece 64 protruding upward. The cartridge insertion detecting arm 62 is in an initial position in which the cartridge inserting detection arm 62 abuts on the engaging piece 48 by the engaging piece 48 which is provided on the slider plate 31 in front of the cartridge inserting detection arm 62. It is located in.

The stopper arm 68 has a mounting hole 71 on the base end side. Attached to the slider plate 31. The stopper arm 68 has
Abutting projection 69, cartridge engaging projection 7 serving as a hooking projection
0 and a stopper step 169 that serves as a hook,
As shown in FIG. 6, the tip side portion is located between the cartridge holder 30 and the one side cam plate 27 and is directed to the front side. The contact protrusion 69 is
It is a protrusion that protrudes upward on the upper surface side of the stopper arm 68. The cartridge engaging protrusion 70 is
The cartridge holder 30 of the stopper arm 68
It is a protrusion protruding from the side edge portion on the side toward the cartridge holder 30 side. This cartridge engaging projection 70
Through the notch formed in the side wall portion on one side of the cartridge holder 30.
It is designed to get into 0 and gain. The stopper step portion 169 is a step portion formed on a side edge portion of the stopper arm 68 on the side of the one side cam plate 27, and the vicinity of the tip end portion of the stopper arm 68 projects to the side. It is formed by The stopper arm 68 is rotationally biased by a torsion coil spring 72 in a direction in which the tip end side is moved to the one side cam plate 27 side as shown by an arrow B in FIG.

In the stopper arm 68, the loading plate 29 is located on the front side of the floating chassis 12,
Further, when the slider plate 31 is located on the front side of the cartridge holder 30, as shown in FIG. 6, the stopper step portion 169 is projected on the flat plate portion 107 as a part of the floating chassis 12. The stopper wall portion 85 is locked to the front end portion of the stopper wall portion 85 and prevents the slider plate 31 and the loading plate 29 from moving rearward. The stopper wall portion 85 is a ridge that is provided on one side portion of the flat plate portion 107 so as to extend upward in the front-rear direction.

[5] [Structure of Disk Drive Block] Then, as shown in FIGS. 22 to 27, a disk drive block 147, which is a disk drive section, is disposed on the flat plate section 107 of the floating chassis 12. Has been done. The disk drive block 147 is configured to include a base 130, a disk table 149 disposed on the base 130, an optical pickup device 148, a magnetic head 143, and the like.

The disk table 149 is mounted on the drive shaft 155 of the spindle motor fixedly mounted on the base 130. The disc table 149 is formed in a substantially disc shape, and has a flat disc mounting portion 150 and a taper portion 151 that is formed at the center of the disc mounting portion 150 so as to project upward. . A magnet is provided inside the tapered portion 151. The disc table 149 is formed by mounting the disc cartridges 201, 22 on the base 130.
When No. 1 is mounted, it enters the cartridges 202, 222 through the chucking opening 216. The magneto-optical disc 20 is placed on the disc table 149 which has entered the cartridges 202 and 222.
3 or the central part of the optical disk 223 is placed. When the magneto-optical disc 203 or the optical disc 223 is placed on the disc table 149, the magnet in the tapered portion 151 attracts the chucking plate 206, and the tapered portion 151 causes the chucking hole. The mounting surface portion 215, which is the peripheral portion of the chucking hole 205, is placed on the disc mounting portion 150.

The optical pickup device 148 has an optical block section, and a light source such as a semiconductor laser, optical devices such as a beam splitter prism and a collimator lens, and a photodetector are built in the optical block section. ing. Further, this optical pickup device 148 is
An objective lens 158 is provided, and the light flux emitted from the light source is condensed and emitted via the objective lens 158. Also, this optical pickup device 1
Reference numeral 48 is configured to detect the reflected light side of the light flux emitted from the objective lens 158 by the photodetector via the objective lens 158. The optical pickup device 148 is supported by a pair of mutually parallel guide shafts 152 and 153 provided on the base 130, and is provided on the other side of the disc table 149. This optical pickup device 148 is
As shown by the arrow L in FIG. 26, each of the guide shafts 1
Along the lines 52 and 153, the base portion 130 can be moved in the left-right direction so as to move toward and away from the disk table 149.

A pair of positioning pins 156 and 157 are planted on the base 130. These positioning pins 156 and 157 are substantially conical pins whose diameters are reduced on the tip side, and when the disk cartridges 201 and 221 are mounted and mounted on the base 130, the pair of positioning holes are formed. The disk cartridges 201 and 221 are fitted in corresponding positions to position the disk cartridges 201 and 221 with respect to the base portion 130. The disk cartridges 201 and 221 are provided with the positioning pins 156 and 1
When positioned by 57, the magneto-optical disk 2
03 or the optical disc 223 is mounted and mounted on the disc table 149.

The magnetic head 143 is shown in FIGS.
And as shown in FIGS. 22 to 25, the head arm 1
It is supported on the connecting arm 121 connected to the optical pickup device 148 via the 28 and the gimbal spring 142. The connecting arm 121 has its base end side attached to the lower surface of the optical pickup device 148.
The front end side is projected rearward from the rear edge of the base 130. A pair of support piece portions 122 and 131, which are formed by bending both side portions upward, are arranged on the tip end side of the connecting arm 121. A support shaft 123 is attached to the support piece portions 122 and 131 so as to extend between the support piece portions 122 and 131. A head support base 135 is disposed between the support pieces 122 and 131, and is supported by the support shaft 123 so as to be rotatable around the support shaft 123. The head support base 135 is formed by bending both sides of a flat plate member downward.
A pair of insertion holes 176 for inserting the support shaft 123 is formed in both side portions of the head support base 135 that are bent downward. The support shaft 123 is inserted through these insertion holes 176.

The base end of the head arm 128 is mounted on the head support base 135 by a fixing screw 134. On the tip side of this head arm 128,
The base end side of the support arm 140 is attached by the fixing screw 141. The support arm 140 is made of a material such as metal and has a thin rod-like end on the tip side. A base end side of a gimbal spring 142 is attached to the tip end side of the head arm 128 so as to be sandwiched between the head arm 128 and the base end side portion of the support arm 140. This gimbal spring 142
The support arm 1 is formed in a thin leaf spring shape, and the tip side thereof is
It is located below the tip side portion of 40. A suspension ring 146 is formed at the tip of the gimbal spring 142. The suspension ring 146 is used for the support arm 1 described above.
It is hooked by a hanging protrusion 145 formed on the tip side of 40. The magnetic head 143 is attached to the tip end side of the gimbal spring 142 via a sliding member 144. The sliding member 144 is made of a low friction material such as synthetic resin, engages with the gimbal spring 142, and covers the lower surface of the magnetic head 143. The magnetic head 143 is positioned and supported on the optical axis of the objective lens 158.
The magnetic head 143 is supplied with an electric current through a flexible substrate 139 having a base end side portion attached to the support arm 140 to generate a magnetic field. A cord 138 for supplying a current is connected to the flexible substrate.

The magnetic head 143 is moved in the vertical direction, that is, the disk table 149, by rotating the head support base 135 around the support shaft 123.
It is possible to move the magneto-optical disk 203 or the optical disk 223 mounted on the optical disk 223 in the direction of contact and separation. As shown by an arrow H in FIG. 5, the head support base 135 has a torsion coil spring 132 disposed between the head support base 135 and the support piece 131 so that the magnetic head 143 is moved downward, that is, the disk table. It is rotationally biased in a direction of moving the magneto-optical disk 203 or the optical disk 223 on the 149.

The head support base 135 is provided with
A rotary operation shaft 124 is attached to the front side of the support shaft 123. This rotation operation shaft 12
Reference numeral 4 is parallel to the support shaft 123 and is inserted through a pair of insertion holes 175 formed in both side portions of the head support base 135 that are bent downward to form a head support base. It is attached to 135. A rotating operation arm 125 is attached to the support shaft 123 and the rotating operation shaft 124 while the supporting shaft 123 and the rotating operation shaft 124 are inserted. That is, the rotation operation arm 125 is formed in a rod shape extending in the front-rear direction, and an insertion hole through which the rotation operation shaft 124 is inserted and an insertion hole through which the support shaft 123 is inserted in the middle part. And have. This rotation operation arm 125
Is movable in the left-right direction with respect to the head support base 135 along the support shaft 123 and the rotation operation shaft 124. The rotation operation arm 125 positions the front end side contact portion 127 above the rear edge side portion of the base 130, and the rear end side operated portion 12 is operated.
6 is projected to the rear side. This rotation operation arm 12
5 positions the contact portion 127 between a pair of wall portions 177 and 178 arranged near the rear edge portion of the base portion 130, and prevents movement in the left-right direction with respect to the base portion 130. Has been done. That is, in the rotary operation arm 125, the connecting arm 121 is the optical pickup device 148.
When it is moved in the left-right direction, which is the contacting / separating direction with respect to the disc table 149, together with the connecting arm 121, the support shaft 123 and the rotating operation shaft 12 are moved.
4 relative to the base 130 and stays in a fixed position with respect to the base 130.

Then, the rotation operation arm 125 brings the contact portion 127 into contact with the height reference portion 129 provided in the vicinity of the rear edge portion of the base portion 130, so that the head support base is moved. The magnetic head 143 is mounted on the table 135.
Is positioned at a predetermined rotation position where it is brought into sliding contact with the magneto-optical disk 203 or the optical disk 223. When the operated portion 126 is pressed and supported downward, the rotary operation arm 125 rotates the head support base 135 against the biasing force of the torsion coil spring 132. Then, the magnetic head 143 is held at a position separated from the magneto-optical disk 203 or the optical disk 223 on the disk table 149.

On the flat plate portion 107, as shown in FIGS.
As shown in FIGS. 15, 18, and 21 to 25, a head lifting operation arm 119 is provided. The head raising / lowering operation arm 119 is rotatably supported by a support shaft 118 supported on the flat plate portion 107 at an intermediate portion thereof, and has at one end side a copying protrusion 120 engaged with the head operating cam groove 109. The operation pin 154 located above the operated portion 126 is provided on the other end side. This head up / down operation arm 119 is operated when any mode other than the recording mode is selected, as shown in FIGS.
2 to 24, the copy pin 120 is supported by the head operation cam groove 109 to press and support the operated portion 126 by the operation pin 154,
When the magnetic head 143 is held at the upper position and the recording mode is selected and the cam plates 27 and 28 are moved rearward, as shown in FIGS. Is rotated by entering the head operating unit 110, releasing the pressing support of the operated unit 126 by the operating pin 154, and enabling the magnetic head 143 to move to the lower side.

The position of the head arm 128 can be adjusted with respect to the head support base 135 in the front-back direction indicated by the arrow G, that is, in the extending direction. That is, the proximal end portion of the head arm 128 is provided with the adjustment elongated hole 136 whose longitudinal direction is the front-back direction. The adjustment pin 137, which is planted on the head base 130, is inserted into the adjustment slot 136. To adjust the position of the head arm 128 in the front-rear direction, loosen the fixing screw 134 a little,
The adjusting jig 165 is inserted into the peripheral wall portion 179 that is provided so as to surround the peripheral portion of the adjusting long hole 136. The tip of the adjusting jig 165 is formed in a cylindrical shape, and an adjusting pin fitting hole 166 is provided in the tip surface portion at a position eccentric from the central axis of the cylinder. This adjusting pin fitting hole 166
The adjustment pin 137 is fitted to the
When 5 is rotated about the axis, the adjustment jig 165 is rotated about the adjustment pin 137. Then, the outer peripheral surface of the adjusting jig 165 presses the inner wall of the peripheral wall 179 to move the head arm 128 in the front-rear direction along the longitudinal direction of the adjusting slot 136. When the position of the head arm 128 in the front-rear direction becomes appropriate, the fixing screw 134 is tightened to complete the position adjustment of the head arm 128 in the front-rear direction.

Further, the head support base 135 is capable of adjusting the position of the connecting arm 121 in the left-right direction as indicated by arrow F. That is, the head support base 135 is pressed in the other side direction along the axial direction of the support shaft 123 by the torsion coil spring 132. Then, on the other side of the head support base 135, an adjusting screw ring 133 externally fitted to the support shaft 123 is disposed and abuts on the head support base 135.
The adjusting screw ring 133 is formed in a cylindrical shape, is externally fitted to the support shaft 123, has a screw formed on the outer peripheral surface thereof, and is screwed into the support piece 122. When the adjusting screw ring 133 is rotated to change the screwing amount into the supporting piece portion 122, the head supporting base 135.
Is pressed against the adjusting screw ring 133 by the torsion coil spring 133, and thus is moved in the axial direction of the support shaft 123, that is, in the left-right direction according to the adjusting screw ring 133. When the adjustment screw ring 133 is stopped when the position of the head support base 135 in the left-right direction becomes appropriate, the adjustment of the head support base 135 in the left-right direction is completed. [6] [Structure (2) of the disk cartridge loading mechanism] As shown in FIG. 7, the one side plate 13 has a moving operation means for moving the cam plates 27 and 28 in the front-rear direction. A loading motor 185 and a plurality of transmission gears are provided. That is, the drive pulley 86 is attached to the drive shaft of the loading motor 185. The drive pulley 86 includes the one side plate 1
An endless drive belt 87 is wound around the driven pulley 88 rotatably arranged on the shaft 3 via a support shaft 94. The driven pulley 88 is integrally formed with a first transmission gear 89 coaxially. This first transmission gear 8
The second gear 9 has a second gear having a larger number of teeth than the first transmission gear 89 and is rotatably arranged on the one side plate 13 via a support shaft 95.
Of the drive gear 90. This second transmission gear 9
At 0, a third transmission gear 91 having a smaller number of teeth than the second transmission gear 90 is integrally formed coaxially.
The third transmission gear 91 is rotatably disposed on the one side plate 13 via a support shaft 96, and the third transmission gear 91 is provided.
It meshes with the fourth drive gear 92 having a larger number of teeth.
The fourth transmission gear 92 includes the fourth transmission gear 92.
The fifth transmission gear 93 having a smaller number of teeth is integrally formed coaxially.

The fifth transmission gear 93 meshes with a tooth portion formed on the outer peripheral edge portion of a cam gear 97 rotatably arranged on the one side plate portion 13 via a support shaft 167.
The tooth portion of the cam gear 97 meshes with the rack gear portion 76 of the one side cam plate 27. That is, the driving force of the loading motor 185 causes the one-side cam plate 27 to be moved in the front-rear direction as indicated by arrows Z and Y in FIG.

The rack gear portion 76 of the one side cam plate 27 is attached to the one side plate portion 13 via the support shaft 112.
The first connecting gear 111 is rotatably supported by the first connecting gear 111. The first connecting gear 111 includes a connecting shaft 114.
It is meshed with the second connecting gear 113 rotatably supported by the one side plate portion 13 via. This connecting shaft 114
As shown in FIGS. 7 and 8, is rotatably arranged so as to extend from the one side plate portion 13 to the other side plate portion 14. A third connecting gear 115 is attached near the other side plate portion 14 of the connecting shaft 114. The third connecting gear 115 meshes with a fourth connecting gear 116 that is rotatably supported by the other side plate portion 14 via a support shaft 117. This fourth connecting gear 11
6 meshes with the rack gear portion 76 of the other side cam plate 28. That is, the cam plates 27 and 28 are moved by the loading motor 185 in the same direction and at the same speed in synchronization.

The cam gear 97 has a main surface portion,
A cam groove 98 is formed so as to surround the support shaft 167. Further, the cam gear 97 has first and second operation protrusions 99 and 100 formed near the outer peripheral edge of the main surface portion.

The cam groove 98 of the cam gear 97 surrounds the vicinity of the support shaft 167, and has a cam shape which is separated from the support shaft 167 only over a predetermined angle range. A copy pin 105 on the rear end side of the lid opening / closing arm 104 is engaged with the cam groove 98. The lid opening / closing arm 104 is rotatably supported by the one side plate portion 13 via a support shaft 103 at an intermediate portion thereof, and a tip end side thereof is located forward of a front end portion of the floating chassis 12. It is protruding. The tip side portion of the lid opening / closing arm 104 is a lid opening / closing portion 106.

As shown in FIGS. 28 to 30, in the cover opening / closing arm 104, when the cam gear 97 rotates, the copying pin 105 is located in a portion of the cam groove 98 which is separated from the support shaft 167. When engaged, as shown by an arrow N in FIG.
6 is rotated in the direction of moving the lower side.

The lid 4 is rotatably supported by the front panel 2 via a support shaft 160. Since the support shaft 160 is arranged along the upper edge portion of the lid body 4, the lid body 4 has a lower edge portion inside the outer casing 1 as shown by an arrow O in FIG. The disk cartridge insertion slit 3 can be rotated in the direction of moving toward the other side.
Open the lid. The lid 4 is rotationally biased by a torsion coil spring (not shown) in the direction of moving the lower edge portion forward, and in the initial state, the peripheral edge portion is near the peripheral edge portion of the disc cartridge insertion slit 3. And is kept in a closed state. An operating rod 159 is integrally attached to one side portion of the lid body 4.

A transmission arm 162 is rotatably attached to the inner wall of the front panel 2 via a support shaft 161. The transmission arm 162 is supported at an intermediate portion, and in the initial state, the transmission pin 164 projecting on the front end side is positioned on the front side of the operation bar 159,
The rear end portion 163 is located below the lid opening / closing portion 106 of the lid opening / closing arm 104. When the lid opening / closing arm 104 rotates in a direction in which the lid opening / closing portion 106 forms the lower side, the lid opening / closing portion 106 lowers the exchange side portion 163 of the transmission arm 162 as shown in FIG. The transmission arm 162 is rotated by pushing it to the side, and the transmission pin 164 is pushed to push the operation bar 159 from the front side to open the lid 4.

Further, the lid 4 has the front panel portion 2
From the front side of the disk cartridge 201, 22
When the disc 1 is inserted into the disc cartridge insertion slit 3, as shown in FIG. 28, the disc 1 is pressed by the disc cartridges 201 and 221 to open the lid 1 on the inner side of the outer casing 1.

The lid 4 is, as shown in FIGS. 36 to 38, as shown by arrows a and b in FIG.
The front panel portion 2 is rotatably supported on the outer side and the inner side, and is conveyed inward or outward as indicated by an arrow c in FIG. 37 or an arrow e in FIG. 38. Depending on the disk cartridge 201 or 221, the arrow d in FIG.
As shown in FIG. 3, the lid is rotated inward and the lid is opened.
Alternatively, the lid may be opened by rotating it outward as indicated by an arrow f in FIG. As shown in FIGS. 39 to 40, the lid 4 is rotatably supported only on the inner side of the front panel portion 2 as shown by an arrow g in FIG. Disk cartridge 20 that is transported inside
As shown in FIG. 40, the lid is opened by 1,221.
Alternatively, the disc cartridges 201 and 221 may be supported by the upper surfaces of the disc cartridges 201 and 221 and maintained in the open state. In this case, the cartridge insertion slit 3 is formed as shown in FIG.
1 and FIG. 42, a slide lid 1 is provided on the inner side of the front panel portion 2 so as to be vertically slidable.
While the lid 4 is being opened by the disc cartridges 201 and 221 by 65,
It may be blocked.

A detection switch 101 is attached to the one side plate 13 in the vicinity of the cam gear 97. The detection switch 101 includes a detection rod 102 that is rotatably supported on the base end side. The detection rod 102 is positioned at the central position in the initial state by the spring member built in the detection switch 101. This detection switch 101 is
The detection rod 102 is configured to output a detection signal whose directionality can be discriminated in a state in which it is rotated by a predetermined angle to one side and a state in which it is rotated by a predetermined angle in the other side. The detection switch 101 is the detection switch 1 described above.
The tip end side of 02 is made to enter the movement trajectory of the first and second operation protrusions 99 and 100 by the rotation of the cam gear 97. That is, when the cam gear 97 is rotated clockwise in FIG. 7 to reach the predetermined rotation angle position, the detection switch 101 is pressed by the first operation protrusion 99 and rotated in one direction. At the same time, when the cam gear 97 is rotated counterclockwise in FIG. 7 to a predetermined rotation angle position, the second operation protrusion 1
It is pressed by 00 and rotated in the other direction.

A guide eave 171 is provided at the lower edge of the disc cartridge insertion slit 3 so as to project rearward from one side of the disc cartridge insertion slit 3 to the other side thereof. It is arranged integrally with the front panel portion 2. Further, a pair of left and right guide ribs 172 are provided on the upper surface of the guide eaves 171 so as to project in the front-rear direction. The guide eaves 171 slidably support the bottom surfaces of the disk cartridges 201 and 221 that are inserted into and removed from the outer casing 1 through the guide ribs 172 and the disk cartridge insertion slits 3.

[7] [Loading Operation of Disc Cartridge] In the disc recorder device configured as described above, in order to mount the disc cartridges 201 and 221 in the disc drive block 147, first,
As shown in FIGS. 6 to 8, the cam gears 27, 28 are
Is set to the frontmost position, and the initial state is set.
At this time, the front support pins 32 and 34 are located at the rear ends of the front cam grooves 73 and the front ends of the third support slits 80 and 83. The rear side support pins 33 and 35 are located at the rear end portions of the rear side cam grooves 74 and in the middle of the second support slits 81 and 84. Further, the operation pin 45 is pressed and supported by the rear end portion of the engagement hole 75, so that the slider plate 31 is attached to the cartridge holder 2.
It is located in front of 9. Therefore, in the stopper arm 68, the stopper step portion 169 is locked to the front end portion of the stopper wall portion 85, and the slider plate 3 is stopped.
1 and the loading plate 29 is prevented from moving to the rear side. The stopper arm 68 is supported by the abutting portion 69 of the cartridge insertion detecting arm 62 with the abutting projection 69 abuttingly supported thereon, and is prevented from rotating inward. Further, in the head elevating operation arm 119, the copying pin 120 is supported by the head operating cam groove 109, and the operated portion 12 is operated by the operating pin 154.
6 is pressed and supported to hold the magnetic head 143 at the upper position.

Further, in this initial state, the detection switch 101, as shown in FIG.
It is rotated in the other direction by the second operation protrusion 100.

Then, the disc cartridge 20
1 and 221 are the slits 3 for inserting the disc cartridge
Inserted into the disk cartridge 201,221
As shown in FIG. 28, the lid 4 is pressed inward to open the lid, and the tip side is inserted into the cartridge holder 30 as shown in FIG. At this time, the disc cartridges 201 and 221 are not attached to the shutter member 21.
The side where 0 and 230 are attached is the other side of the cartridge holder 30.

The above-mentioned disc cartridges 201, 221
Means that the erroneous insertion prevention protrusion 180 is inserted into the erroneous insertion prevention groove
It is inserted into the cartridge holder 30 while entering the inside of the cartridge holder 20. And this disc cartridge 20
1, 221 press the cartridge abutment pin 170 by the front end portion thereof to move the cartridge insertion detection arm 62 against the biasing force of the torsion coil spring 67 as shown in FIG. Rotate to. At this time, the stopper arm 68 is released from the contact support with respect to the contact protrusion 69 by the contact portion 65, and is in a state capable of rotating inward. At this time, the front ends of the cartridges 202 and 222 come into contact with the front edge of the pressed piece 47 of the slider plate 31.

When the disc cartridges 201 and 221 are erroneously inserted into the cartridge holder 30, the erroneous insertion prevention protrusion 180 is
The disc cartridges 201 and 221 are brought into contact with the cartridges 202 and 222 to prevent the disc cartridges 201 and 221 from being inserted into the cartridge holder 30. Such erroneous insertion is, for example, the case where the disc cartridges 201 and 221 are inserted inside out or the case where the disc cartridges 201 and 221 are inserted with the front-rear direction wrong. When such an erroneous insertion is made, the erroneous insertion preventing protrusion 180 is not inserted into the erroneous insertion preventing groove 220.
When the cartridges 1 and 221 are about to be inserted into the cartridge holder 30, they come into contact with the side surfaces of the cartridges 202 and 222. In this way, the erroneous insertion prevention protrusion 180
Discourages the insertion operation of the disc cartridges 201 and 221, the disc cartridge 20
1, 221 do not reach the cartridge contact pin 170, and the cartridge insertion detection arm 62
There is no turning.

When the disc cartridges 201 and 221 are further inserted inside the outer casing 1, the cam plates 28 and 28 are engaged with the engagement holes 75 by the operation pins 45 of the slider plate 31. The rear end portion is pressed and moved slightly rearward. Then, the cam gear 97 is slightly rotated clockwise in FIG. 7, and the detection switch 101 releases the pressing of the detection rod 102 by the second operation protrusion 100.
The detection rod 102 is located at the central position. Above detection switch 1
When the detection rod 102 of 01 is in the central position, the loading motor 185 starts driving in a direction to move the cam plates 27, 28 to the rear side shown by Y in FIG. 7 via a control circuit not shown. It

At this time, the shutter opening claw 173 is
The cartridge 202, 222 enters the groove 209 from the front side of the cartridge 202, 222 and contacts the tip of the projecting piece 212. Further, the shutter closing claw 56 is fitted and engaged with the engaging hole 211.

When the loading motor 185 starts driving and the cam plates 27 and 28 are moved to the rear side, as shown in FIGS.
The slider plate 31 is moved to the rear side following 7 and 28 as indicated by an arrow U in FIG. At this time, since the loading plate 29 is biased to the front side with respect to the slider plate 31 by the biasing force of the tension coil spring 49, it does not move to the rear side. That is, the cam plates 27 and 28 and the slider plate 31 move rearward with the loading plate 29 stopped with respect to the floating chassis 12. Therefore, the front cam grooves 73 move rearward while the front support pins 32 and 34 remain positioned at the front ends of the third support slits 80 and 83. Further, the rear side cam grooves 74 move rearward while the rear side support pins 33, 35 remain positioned in the middle of the second support slits 81, 84.

The operation pin 45 is pressed against the rear end of the engagement hole 75 by the urging force of the tension coil spring 49. Then, the stopper arm 68 slides the stopper step 169 to the front end of the stopper wall 85 as the slider plate 31 moves to the rear side, and moves toward the inner side of the stopper wall 85. It is rotated. By rotating the stopper arm 68 inward, the stopper arm 68 fits the cartridge engaging projection 70 into the engaging recess 218 of the cartridge 202, 222. At this time, the shutter member 21
0 and 230 stay at the position where the tip end of the projecting piece 212 contacts the shutter opening claw 173, and open the opening 207 as the cartridges 202 and 222 move to the rear side. Cover it.

The head raising / lowering operation arm 119 described above is used.
, The copying pin 120 is still supported by the head operating cam groove 109, and the operated portion 126 is pressed and supported by the operating pin 154 to hold the magnetic head 143 at the upper position. ..

The slider plate 31 includes the cam plate 27,
28, the position where the front end surface portions of the cartridges 202 and 222 come into contact with the cartridge positioning wall portion 61 by the biasing force of the tension coil spring 49, that is, the pressed piece 47 is moved to the cartridge positioning wall portion 61. Move to a position flush with the other. At this time,
As shown in FIG. 11, each of the cam grooves 73 and 74 has a connection point between a horizontal portion on the rear side and an inclined portion, that is, a rear end portion of the inclined portion. It is the position where is inserted. During this time, the positional relationship between the disk cartridges 201 and 221 and the slider plate 31 is determined by the cartridge engaging projection 7 of the stopper arm 68.
0 is the engaging recess 218 of the cartridge 202, 222.
It is maintained by being engaged with.

When the cam plates 27 and 28 are moved rearward by the loading motor 185,
As shown in FIGS. 13 to 15, the loading plate 2
9 is moved to the rear side while maintaining the positional relationship with the slider plate 31. That is, each cam plate 2
7, 28 are the support pins 32, 33, 3 at the connecting points between the horizontal portions and the inclined portions on the rear side of the cam grooves 73, 74.
With the 4, 35 inserted, move to the rear side. At this time, the positional relationship between the loading plate 29 and the slider plate 31 is maintained by the biasing force of the tension coil spring 49. The support pins 32,
33, 34, and 35, together with the loading plate 29, the second and third support slits 80, 81, 8
Move to the rear end position of 3,84. At this time, the disc cartridges 201 and 221 are horizontally conveyed from the upper front position of the disc drive block 147 as shown in FIG. 22 to the position immediately above the disc drive block 147 as shown in FIG. To be done. At this time, the disc cartridges 201 and 221 enter the upper side of the optical pickup device 148 and the lower side of the magnetic head 143, that is, between the optical pickup device 148 and the magnetic head 143.

Also, such a disk cartridge 2
29, the lid opening / closing arm 104 passes through the section in which the copying pin 105 is separated from the support shaft 167 of the cam groove 98, as shown in FIG. Therefore, the transmission arm 162
The lid 4 is opened via the.

When the cam plates 27, 28 are further moved rearward by the loading motor 185, the loading plate 29 is positioned relative to the slider plate 31, as shown in FIGS. With the relationship maintained, the disk is moved downward, that is, in the direction of approaching the disk drive block 147. That is,
At this time, the loading plate 29 is further rearward because the support pins 32, 33, 34, 35 are located at the rear ends of the second and third support slits 80, 81, 83, 84. When the cam plates 27, 28 cannot move to the side and the cam plates 27, 28 move to the rear side, the support pins 32, 33, 34, 35 move the inclined portions of the cam grooves 73, 74 and the second and Third support slits 80, 81, 8
It is moved to the lower side by being positioned at the intersection of the rear end of 3, 84 and the downward bent portion. At this time, the operation pin 45 is located in the middle of the engagement hole 75. Then, the disc cartridges 201, 201
As shown in FIGS. 24 and 27, the reference numeral 21 is mounted and mounted on the base portion 130 of the disk drive block 147 after being positioned by the positioning pins 156 and 157. Therefore, at this time, the magneto-optical disk 203 or the optical disk 223 is placed and mounted on the disk table 149. The loading plate 29 presses and supports the disk cartridges 201 and 221 with respect to the base portion 130 via the cartridge holder 30.

The disc cartridges 201, 221
Is mounted on the base portion 130, the base portion 13
Completion of mounting of the disk cartridges 201 and 221 is detected by a detection switch provided on the disk 0. When the mounting completion of the disk cartridges 201 and 221 is detected, the loading motor 185 is stopped by the control circuit.

In this state, the magneto-optical disk 2
03, or the information signal can be read from the optical disc 223 by the optical pickup device 148, that is, the reproduction mode can be executed. In the reproduction mode, the magneto-optical disk 2 placed on the disk table 149 by the spindle motor by pressing the reproduction button 8 is pressed.
03, or the optical disc 223 is rotated,
This is performed by reading the information signal by the optical pickup device 148.

When the recording button 10 is pressed and the execution of the recording mode is instructed, the loading motor 185 drives the cam plates 27 and 28 in a direction to further move them to the rear side. That is, as shown in FIGS. 19 to 21, the cam plates 27, 28 have the support pins 32, 33, 34, 35 connected to the front ends of the front horizontal portions of the cam grooves 73, 74. It is moved to the position where it is inserted into the section. At this time, the detection switch 101, as shown in FIG.
By being pressed by the first operation protrusion 99, it is rotated in one direction. By the rotation of the detection rod 102, the loading motor 185 is stopped via the control circuit.

At this time, the head lifting operation arm 11
As shown in FIG. 21, the scanning pin 120 is rotated as shown by an arrow K in FIG. The pressure support of the portion 126 is released, and the magnetic head 143 can be moved downward. The head arm 128 is moved by the urging force of the torsion coil spring 132, as shown by an arrow J in FIG.
27 is rotated to a position where it abuts on the height reference portion 129, and the magnetic head 143 is moved to the disk table 1
It is brought into sliding contact with the magneto-optical disk 203 mounted on the disk 49. At this time, the magnetic head 143 is brought into sliding contact with the main surface portion of the magneto-optical disk 203 by a predetermined pressure contact force by the elastic force of the gimbal spring 143.

In this state, the magneto-optical disk 2
The information signal can be written to the optical pickup device 03 by the optical pickup device 148 and the magnetic head 143, that is, the recording mode can be executed. In the recording mode, the magneto-optical disc 2 mounted on the disc table 149 by the spindle motor is used.
03 is rotated to operate the optical pickup device 148.
And the information signal is written by the magnetic head 143.

Then, the eject button 5 is pressed during execution of the reproduction mode or the recording mode, or during the stop mode in which the stop button 9 is pressed to stop the spindle motor. When,
The disc cartridges 201 and 221 are carried out to the outside through the cartridge insertion slit 3.

That is, when the eject button 5 is pressed, the loading motor 185 moves the cam plates 27 and 28 to the front side shown by the arrow Z in FIG. 17 or FIG. Driven to. Here, the eject button 5 is pressed after the recording mode is executed.
When is pressed, the magnetic head 143 moves the copying pin 120 of the head elevating operation arm 119 back into the head operation cam groove 109 by moving the cam plates 27 and 28 to the front side. The operation pin 154 presses and supports the operated portion 126, so that the operation pin 154 is moved to an upper position separated from the magneto-optical disk 203. Then, each of the cam plates 27 and 28 is moved to the front side so that as shown in FIGS. 14 and 15,
The support pins 32, 33, 34, 35 are connected to the inclined portions of the cam grooves 73, 74 and the second and third support slits 8.
The loading plate 29 is moved to the upper side separated from the disk drive block 147 by being positioned at the intersection of the rear end of the 0, 81, 83, 84 and the downward bent portion. Therefore, the disc cartridges 201, 201
21 is floated on the disk drive block 147 as shown in FIG.

When the cam plates 27 and 28 are moved forward by the loading motor 185,
As shown in FIGS. 10 to 12, the loading plate 2
9 is moved to the front side while maintaining the positional relationship with the slider plate 31. That is, each cam plate 2
7, 28 are the support pins 32, 33, 3 at the connecting points between the horizontal portions and the inclined portions on the rear side of the cam grooves 73, 74.
With the 4, 35 inserted, move to the front side. At this time, the positional relationship between the loading plate 29 and the slider plate 31 is maintained by the biasing force of the tension coil spring 49. The support pins 32,
33, 34, and 35, together with the loading plate 29, the second and third support slits 80, 81, 8
Move to the front end position of 3,84. At this time, the disc cartridges 201 and 221 are horizontally conveyed from a position directly above the disc drive block 147 as shown in FIG. 23 to a front position on the upper side of the disc drive block 147 as shown in FIG. To be done.

Also, such a disk cartridge 2
29, the lid pin opening / closing arm 104 is configured such that the copying pin 105 has the copying pin 105 on the support shaft 1 of the cam groove 98 while being horizontally conveyed toward the front of the cams 01 and 221.
By passing the section separated from 67, the lid 4 is opened via the transmission arm 162. The lid 4 is opened until the rear side portion of the cartridge 202, 222 is projected to the front side of the front panel portion 2 via the cartridge insertion slit 3, and the cartridge 202, 222 is opened. It does not contact 222. It should be noted that the lid body 4 includes the cartridge 202,
After the rear side portion of the 222 is projected to the front side of the front panel portion 2, the cartridge 202, 222 maintains the open state.

As shown in FIGS. 10 to 12, the loading plate 29 is moved forward by the cam plates 27, 28 so that the support pins 32, 34 on the front side move to the third side. When reaching the front ends of the support slits 80 and 83, the support slits 80 and 83 cannot move further forward and stop.
Each of the cam plates 27, 28 is further moved forward, and as shown in FIGS. 7 to 9, the operation pin 45 is pushed forward by the rear end edge of the engagement hole 75. , The slider plate 31 is moved to the front side against the biasing force of the tension coil spring 49, as indicated by the arrow X in FIG. That is, the cam plates 27 and 28 and the slider plate 31 move to the front side while the loading plate 29 remains stopped with respect to the floating chassis 12. Therefore, the support pins 32, 3 on the front side
The respective front side cam grooves 73 move to the front side while the number 4 remains at the front end portions of the third support slits 80 and 83. Further, the rear side cam grooves 74 move to the front side while the rear side support pins 33 and 35 remain positioned in the middle of the second support slits 81 and 84.

By moving the slider plate 31 toward the front side, the disk cartridges 201 and 221 are moved.
Is pressed by the pressed piece 47, separated from the positioning wall portion 61, and moved forward with respect to the cartridge holder 30.

The stopper arm 68 is shown in FIG.
As the slider plate 31 is moved forward, the stopper step 169 is positioned further forward than the front end of the stopper wall 85 and is rotated outward. The stopper arm 68 rotates outward so that the stopper step 169 is engaged with the front end of the stopper wall 85. Further, at this time, the shutter members 210 and 230 remain at the position where the shutter closing claw 56 is fitted and engaged in the engaging hole 211, and the opening is performed as the cartridges 202 and 222 move to the front side. The part 207 is closed.

When the cam plates 27, 28 are moved to the front position which is the initial position, the support pins 32, 3 are moved.
As shown in FIGS. 7 and 8, the reference numerals 3, 34 and 35 are inserted into the rear end portions of the cam grooves 73 and 74, respectively. And
At this time, the detection switch 101 operates the detection rod 10
2 is pressed by the second operation protrusion 100 and rotated in the other direction. Detection rod 1 of the detection switch 101
When 02 is rotated in one direction, the loading motor 185 is stopped via the control circuit.

Then, as shown in FIG. 6, when the disk cartridges 201 and 221 are taken out to the front side, the cartridge insertion detecting arm 62 is rotated to the front side by the urging force of the torsion coil spring 67. After returning to the initial state, the abutment portion 65 abuts and supports the abutment projection 69 to prevent the stopper arm 68 from rotating inward. When the disk cartridges 201 and 221 are taken out to the front side, the shutter closing claw 56 closes the shutter members 210 and 230 and then is rotated outward to rotate the engaging holes 211. Get out more.

[0102]

As described above, in the disc cartridge loading mechanism according to the present invention, the engaging portion movably arranged with respect to the cartridge holder into which the disc cartridge is inserted and engaged with the chassis, and the disc. The stopper member having a hooking protrusion that engages with the cartridge is arranged so as to be movable with respect to the cartridge holder when the disc cartridge is not inserted in the cartridge holder and the latching portion is hooked by the chassis. A cartridge insertion detection member, which is provided and is operated by being pressed by the disc cartridge when the disc cartridge is inserted into the cartridge holder, moves in a direction in which the engagement of the chassis with the engagement portion is released. It has been blocked.

Therefore, the stopper member can be used even when an external force is applied to the cartridge holder when the disk cartridge is not inserted in the cartridge holder and the engaging portion is engaged by the chassis. This cartridge holder is prevented from moving.

When the disc cartridge is inserted into the cartridge holder and the cartridge insertion detecting member is moved, the stopper member releases the blocking of the movement by the cartridge detecting member, and the stopper member of the cartridge holder is released. Along with the movement, it slides in contact with the chassis and moves in a direction in which the engagement with the engagement portion by the chassis is released, and the engagement protrusion engages with the engagement recess of the disc cartridge.

Therefore, when the disc cartridge is inserted into the cartridge holder, the stopper member makes the cartridge holder movable and maintains the positional relationship between the cartridge holder and the disc cartridge.

In the above-mentioned disc cartridge loading mechanism, when the cartridge holder is provided with an erroneous insertion preventing protrusion that is inserted into the erroneous insertion preventing groove of the disc cartridge, the erroneous insertion preventing protrusion is erroneous. When the disc cartridge is inserted into the cartridge holder in a state where the insertion preventing protrusion does not enter the erroneous insertion preventing groove, the disc cartridge is brought into contact with the disc cartridge to prevent the disc cartridge from being inserted. The movement operation of the cartridge insertion detecting member is prevented.

Therefore, in this disc cartridge loading mechanism, the erroneous insertion preventing projection prevents erroneous insertion of the disc cartridge, and even when external force is applied to the cartridge holder due to this erroneous insertion, The stopper member prevents the cartridge holder from moving and reliably prevents erroneous insertion.

That is, the present invention can provide a disc cartridge loading mechanism which can reliably prevent the erroneous insertion of the disc cartridge while simplifying the structure.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a disk recorder device to which the present invention is applied.

FIG. 2 is an exploded perspective view showing a configuration of a main part of the disk recorder device.

FIG. 3 is a perspective view showing a configuration of a magnetic head support mechanism of the disk recorder device.

FIG. 4 is a plan view showing a configuration of the magnetic head support mechanism.

FIG. 5 is a side view showing a configuration of a main part of the magnetic head support mechanism.

FIG. 6 is a plan view showing a configuration of a disc cartridge loading mechanism according to the present invention in the disc recorder device.

FIG. 7 is a side view showing the configuration of one side portion of the disc cartridge loading mechanism.

FIG. 8 is a side view showing the configuration of the other side portion of the disc cartridge loading mechanism.

FIG. 9 is a plan view showing a state where a disc cartridge is inserted into the disc cartridge loading mechanism.

FIG. 10 is a plan view showing a state where loading is started in the disc cartridge loading mechanism.

FIG. 11 is a side view showing one side portion of the disc cartridge loading mechanism in a state where loading is started.

FIG. 12 is a side view showing the other side portion of the disc cartridge loading mechanism in a state where loading is started.

FIG. 13 is a plan view showing a state where the disc cartridge is transported to the rear side in the disc cartridge loading mechanism.

FIG. 14 is a side view showing one side portion of the disc cartridge loading mechanism in the state where the disc cartridge is conveyed to the rear side.

FIG. 15 is a side view showing the other side portion of the disc cartridge loading mechanism in the state where the disc cartridge is conveyed to the rear side.

FIG. 16 is a plan view showing a state in which the disk cartridge loading mechanism has completed loading and is in a reproduction mode.

FIG. 17 is a side view showing one side portion of the disc cartridge loading mechanism in a state where loading is completed and a playback mode is set.

FIG. 18 is a side view showing the other side portion of the disc cartridge loading mechanism in a state where loading is completed and a reproduction mode is set.

FIG. 19 is a plan view showing a state of the disc cartridge loading mechanism in a recording mode.

FIG. 20 is a side view showing one side portion of the disc cartridge loading mechanism in a recording mode.

FIG. 21 is a side view showing the other side portion of the disc cartridge loading mechanism in the recording mode.

FIG. 22 is a side view showing a configuration of a disc drive unit and a disc cartridge of the disc recorder device.

FIG. 23 is a side view showing a state where a disc cartridge is conveyed onto the disc drive unit.

FIG. 24 is a side view showing a state where a disc cartridge is mounted on the disc drive unit and a playback mode is set.

FIG. 25 is a side view showing a state where a disc cartridge is mounted on the disc drive unit and a recording mode is set.

FIG. 26 is a plan view showing the configuration of the disc drive unit.

FIG. 27 is a plan view showing a state where a disc cartridge is mounted on the disc drive unit.

FIG. 28 is a longitudinal sectional view of an essential part showing the configuration in the vicinity of a disc cartridge insertion slit of the disc recorder device.

FIG. 29 is a longitudinal sectional view of an essential part showing a state where the disc cartridge insertion slit is opened in the disc recorder device.

FIG. 30 is a longitudinal cross-sectional view of essential parts showing a state in which the disc cartridge insertion slit is closed after the disc cartridge is mounted in the disc recorder device.

FIG. 31 is a vertical cross-sectional view showing a configuration of a damper that supports a floating chassis in the disc recorder device.

FIG. 32 is a perspective view showing a configuration of a disc cartridge used for recording and reproducing information signals in the disc recorder device.

33 is a perspective view showing the configuration of the bottom surface side of the disc cartridge shown in FIG. 32. FIG.

FIG. 34 is a perspective view showing a configuration of a disc cartridge used only for reproduction of an information signal in the disc recorder device.

35 is a perspective view showing the configuration of the bottom surface side of the disc cartridge shown in FIG. 34.

FIG. 36 is a vertical sectional view showing a configuration for closing the disc cartridge insertion slit in the disc recorder device.

37 is a vertical cross-sectional view showing a state in which the disc cartridge is inserted into the disc recorder device shown in FIG. 36. FIG.

38 is a vertical cross-sectional view showing a state when the disc cartridge is ejected from the disc recorder device shown in FIG. 36. FIG.

FIG. 39 is a vertical cross-sectional view showing another example of the configuration for closing the disc cartridge insertion slit in the disc recorder device.

40 is a longitudinal sectional view showing a state where a disc cartridge is inserted into the disc recorder device shown in FIG. 39. FIG.

FIG. 41 is a vertical cross-sectional view showing still another example of the configuration for closing the disc cartridge insertion slit in the disc recorder device.

42 is a vertical cross-sectional view showing a state where a disc cartridge is inserted into the disc recorder device shown in FIG. 41.

[Explanation of symbols]

 12: Floating chassis 27, 28 Cam plate 30: Cartridge holder 62 ...・ ・ ・ ・ Cartridge insertion detection arm 68 ・ ・ ・ ・ ・ ・ ・ Stopper arm 70 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Cartridge engaging projection 85 ・ ・ ・ ・・ ・ ・ Stopper wall 97 ・ ・ ・ ・ ・ ・ ・ ・ ・ Cam gear 147 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Disk drive block 169 ・ ・ ・ ・ ・ ・Stepped portion 180 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Erroneous insertion prevention protrusion 185 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Loading motor 201,221 ・ ・ ・ ・ Disk cartridge 203 ・ ・ ・ ・ ・..... Magneto-optical disk 218 ..... engagement recess 220 .. ......... erroneous insertion preventing groove 223 ............ disc

Claims (2)

[Claims] 1. A movably supported with respect to a chassis,
A cartridge holder in which a disc cartridge is inserted and which holds the disc cartridge, and a moving operation means for moving the cartridge holder to a disc drive unit side for writing and / or reading an information signal to / from the recording disc of the disc cartridge. And movably arranged with respect to the cartridge holder,
A cartridge insertion detection member that is pressed and moved by the disc cartridge when the disc cartridge is inserted into the cartridge holder;
A stopper member having a hooking portion to be hooked to the chassis and a hooking protrusion to be hooked to the disc cartridge, wherein the stopper member does not insert the disc cartridge into the cartridge holder, When the hooking portion is hooked, the cartridge insertion detecting member prevents the chassis from moving in the direction of releasing the hooking to the hooking portion, and the disc cartridge is inserted into the cartridge holder to When the cartridge insertion detecting member is operated to move, the blocking of the movement by the cartridge detecting member is released, and the cartridge holder is slidably contacted with the chassis as the moving operation means moves the cartridge holder to the disk drive unit side. Release the latch from the chassis to the latch. A disk cartridge loading mechanism that moves in the direction to allow the engaging projection to engage with the engaging recess of the disk cartridge. 2. The cartridge holder has an erroneous insertion prevention protrusion that is inserted into an erroneous insertion prevention groove of the disc cartridge, and the erroneous insertion prevention protrusion has the erroneous insertion prevention protrusion for preventing the erroneous insertion prevention. When the disc cartridge is inserted into the cartridge holder without entering the groove,
2. The disc cartridge loading mechanism according to claim 1, wherein the disc cartridge loading mechanism is in contact with the disc cartridge to prevent the disc cartridge from being inserted into the disc cartridge, and to prevent movement of the cartridge insertion detecting member by the disc cartridge.