JPH04368660A - Disk cartridge loading device - Google Patents

Abstract

PURPOSE:To excute the fine adjustment of the initial position of an injecting arm with a initial position adjusting cam and to surely execute a good injecting operation. CONSTITUTION:The initial position adjusting cam 72 is intereposed between the injecting arm rotatably supported by a cartridge holder 35 and rotatably pressed by a pulling coil spring 70, and a positioning projection 128a positioning the injecting arm 57.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge loading device for loading a disk cartridge containing a recording disk into a predetermined position of a recording and/or reproducing device.

0002

2. Description of the Related Art Conventionally, recording disks such as optical disks and magneto-optical disks have been proposed, which are constructed so that information signals can be written and read, and are used as recording media for information signals.

The magneto-optical disk has a signal recording layer made of a magnetic thin film capable of perpendicular magnetization. This signal recording layer is heated to a temperature higher than the Curie temperature by laser beam irradiation, and an external magnetic field is applied to reverse the direction of magnetization, thereby writing information signals. In addition, the information signal written in this signal recording layer is generated by irradiating the surface of the signal recording layer with a linearly polarized light beam such as a laser beam, and the polarization direction is determined by the so-called Kerr effect that occurs when the light beam is reflected at the surface. By detecting the change in the magnetization direction, the difference in the magnetization direction is determined and read out.

[0004] Furthermore, the optical disc has a signal recording layer made of a thin film of metal such as aluminum. In this optical disc, information signals are written by providing unevenness on the signal recording layer using techniques such as injection molding. Information signals written on this optical disk are produced by irradiating the surface of the signal recording layer with a coherent light beam such as a laser beam, and changing the intensity of the reflected light beam due to interference that occurs when the light beam is reflected at the surface. By detecting this, the presence of the above-mentioned unevenness is determined and read out.

[0005] In order to prevent such recording disks from being damaged or soiled due to adhesion of dust or contact with fingers or the like when not in use, a disk cartridge has been proposed in which the recording disk is housed in a cartridge. ing. This cartridge has a thin housing shape so that it can accommodate the recording disk. That is, the main surface portion of this cartridge has a substantially rectangular shape with sides slightly longer than the diameter of the recording disk. Further, the thickness of this cartridge is slightly thicker than the thickness of the recording disk.

[0006] The cartridge has a recording/reproducing opening that exposes the main surface of the recording disk serving as a signal recording surface to the outside across the inner and outer peripheries, and a recording/reproducing opening that exposes the center of the recording disk to the outside. A chucking opening is provided. Further, a shutter member is attached to the cartridge to close each opening when the recording disk is not in use and to open the opening when the recording disk is in use.

[0007] A recording and/or reproducing device is used to write and/or read information signals using a disc cartridge constructed by storing a recording disc in the cartridge as described above. This recording and/or reproducing device includes an optical pickup device that irradiates a light beam, a magnetic head device that applies an external magnetic field, and opens each opening of the cartridge to mount the disk cartridge in a predetermined mounting position. The disc cartridge is equipped with a disc cartridge loading device.

[0008] The optical pickup device is configured to condense and irradiate a laser beam onto one main surface of the recording disk, and to detect the reflected light of the laser beam from the recording disk. There is. The magnetic head device is configured to apply a magnetic field to the signal recording layer of the recording disk.

The disc cartridge loading device loads the disc cartridge at a mounting position of the recording and/or reproducing device, that is, the recording disc of the disc cartridge is held by the rotation operating device of the recording and/or reproducing device. It is installed in the position where it will be rotated and operated. In this mounting position, the optical pickup device and the magnetic head device are moved in the radial direction of the recording disk over the inner and outer peripheries of the recording disk, so that information signals are transmitted over almost the entire surface of the recording disk. It is possible to write and/or read data.

The disc cartridge loading device has a cartridge holder into which the optical disc cartridge is inserted from the front side. A shutter opening arm that engages with the shutter member and moves the shutter member relative to the cartridge is rotatably attached to the cartridge holder. Further, a cartridge inject arm is attached to this cartridge holder, which has a cartridge inject pin, engages the cartridge inject pin with the inserted cartridge, and pulls the cartridge to the above-mentioned mounting position. .

The shutter opening arm is rotatably supported by the cartridge holder at its proximal end and has a shutter opening pin at its distal end. This shutter release pin faces into the cartridge holder. When the disk cartridge is inserted into the cartridge holder, the shutter release arm brings the shutter release pin into contact with one side of the shutter member of the cartridge. The shutter opening arm is rotated by pressing the shutter opening pin when the cartridge is inserted into the cartridge holder, that is, to the rear side. By such rotation, the shutter opening arm moves the shutter member relative to the cartridge and opens the opening.

That is, in this disc cartridge loading device, the disc cartridge inserted into the cartridge holder is moved by the shutter opening arm to open the opening, and the disc cartridge is inserted into the cartridge holder. The injection arm transports it to the above mounting position,
It is mounted at the mounting position.

[0013]

By the way, in the disk cartridge loading device, the cartridge inject arm is rotatably supported by the cartridge holder, and is injected in one direction by an elastic biasing member such as a tension coil spring. is biased to rotate. In an initial state before the disk cartridge insertion operation is performed, the cartridge inject arm is brought into contact with the inject arm positioning member and positioned at the initial position.

The disk cartridge loading device is provided with a cartridge inject pin that is moved in response to rotation of the cartridge inject arm. The cartridge inject pin is configured to engage with an engaged portion provided on the cartridge of the disc cartridge when the disc cartridge is inserted into the cartridge holder.

[0015] The above-mentioned inject arm positioning member is
When the disk cartridge is inserted into the cartridge holder, the positioning with respect to the cartridge injection arm is released in accordance with the movement of the disk cartridge. The cartridge inject arm, which has been released from positioning by the inject arm positioning member, is rotated in one direction by the biasing force of the elastic biasing member. By this rotation of the cartridge inject arm, the cartridge inject pin is moved to perform a movement operation to the mounting position of the cartridge, that is, an injection operation.

[0016] Here, if the initial position of the above-mentioned inject arm is not accurately positioned, the above-mentioned cartridge inject pin will not be able to engage with the engaged portion of the above-mentioned cartridge, and a good injection operation will not be performed. There is a risk.

Particularly, when the distance from the pivot shaft of the cartridge inject arm to the part that abuts the inject arm positioning member is shorter than the distance from the pivot shaft to the cartridge inject pin. In this case, even if the position of the inject arm positioning member shifts slightly, the position of the cartridge inject pin in the initial state will shift significantly. Therefore, in this case, it is necessary to maintain the position of the inject arm positioning member with high precision. Maintaining the position of the inject arm positioning member with high precision makes manufacturing of this disk cartridge loading device difficult and complicated.

Therefore, the present invention has been proposed in view of the above-mentioned conventional situation, and it is possible to accurately position the initial position of the cartridge inject arm without making manufacturing difficult or complicated. An object of the present invention is to provide a disk cartridge loading device that can ensure a good injection operation.

[0019]

[Means for Solving the Problems] In order to solve the above-mentioned problems and achieve the above-mentioned objects, a disk cartridge loading device according to the present invention is provided with a disk cartridge in which a recording disk is housed in the cartridge. a cartridge holder; a cartridge inject arm rotatably supported by the cartridge holder and biased to rotate in one direction by an elastic biasing member; The rotation of the cartridge inject arm is restricted against the biasing force of the member to position the cartridge inject arm at the initial position, and when the disc cartridge is inserted into the cartridge holder, the disc cartridge is inserted into the cartridge holder. an inject arm positioning member that is moved in response to the movement of the cartridge inject arm to release rotation restriction on the cartridge inject arm; and an inject arm positioning member that is moved in response to the rotation of the cartridge inject arm to insert the disk cartridge into the cartridge holder. a cartridge inject pin which, when operated, engages with the cartridge of the disk cartridge and pulls the cartridge to a predetermined position inside the cartridge holder by the biasing force of the elastic biasing member; the cartridge inject arm; and the cartridge inject pin; The cartridge inject arm is interposed between the cartridge inject arm positioning member so as to be movable relative to the inject arm positioning member, and the initial position of the cartridge inject arm is varied by being movably operated relative to the inject arm positioning member. and an initial position adjustment member.

[0020]

[Operation] In the disc cartridge loading device according to the present invention, the disc cartridge is rotatably supported by the cartridge holder into which the disc cartridge is inserted and is rotatably biased in one direction by the elastic biasing member, and the inject arm is positioned. The cartridge inject arm that has been brought into contact with the member and positioned at the initial position is interposed between the cartridge inject arm and the inject arm positioning member so as to be movable relative to the inject arm positioning member. The initial position adjusting member is moved relative to the inject arm positioning member to change the initial position, so the initial position can be finely adjusted by moving the initial position adjusting member.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings.

[1] Configuration of disk cartridge (Fig. 2
6 and FIGS. 27) A disk cartridge 201 used as a recording medium in a recording and/or reproducing device to which the disk cartridge loading device according to the present invention is applied is a disk-shaped recording disk 202, as shown in FIGS. 26 and 27. and a cartridge 203 that rotatably accommodates the recording disk 202.

The recording disk 202 is an optical disk, a magneto-optical disk, or the like, and has a signal recording layer on its main surface, and information signals are written and recorded on the signal recording layer by optical or magneto-optical means. /or it can be read. This recording disk 20
In No. 2, one main surface is a signal recording surface. A chucking hub 202a for being chucked by the recording and/or reproducing device is attached to the center of one main surface of the recording disk 202. Note that the recording disk 202 in this example is
This is a magneto-optical disk using a magnetic thin film as a signal recording layer, and has a diameter of 3.5 inches.

[0024] The cartridge 203 is constructed in the shape of a thin casing that is large enough to accommodate the recording disk 202 therein. That is, this cartridge 203 has a main surface having a substantially rectangular shape of 90 mm x 94 mm and a thickness of 6 mm. This cartridge 203 has a pair of upper half 205 and lower half 20.
4, these upper half 205 and lower half 204
are butt-coupled. The recording disk 202 is rotatably housed in the cartridge 203.

The lower half 204 of the cartridge 203 includes a chucking hub 202a attached to the center of the recording disk 202, and a part of the signal recording surface of the recording disk 202 housed in the cartridge 203. A first opening 206 is provided to allow the inner and outer circumferences to face outward. This first opening 20
Reference numeral 6 is formed as a long hole extending from approximately the center of the lower main surface 207 of the cartridge 203 on the side of the front surface 209 of the cartridge 203 to the center of the lower main surface 207 .

The first opening 206 opens into the chucking hub 202a when the disc cartridge 201 is loaded into a predetermined mounting position of the recording and/or reproducing apparatus by the disc cartridge loading device according to the present invention. The signal recording surface of the recording disk 202 faces the optical pickup device of the recording and/or reproducing apparatus.

On the other hand, the upper half 205 has a first opening 206 provided in the lower half 204,
A second opening (not shown) is provided. This second opening is provided at a position closer to the front surface 209 side of the cartridge 203, and allows a part of the other main surface of the recording disk 202 to face outward across the inner and outer peripheries in the radial direction. It is formed as a rectangular hole of sufficient size. When the disc cartridge 201 is installed in the mounting position of the recording and/or reproducing device, the second opening allows the other main surface of the recording disc 202 to be opened for the recording and/or reproducing device. It is arranged to face the magnetic head device of the device.

Note that the front section 2 of the cartridge 203
In 09, the optical pickup device and the magnetic head device are easily inserted into the cartridge 203 while closely facing each main surface portion of the recording disk 202 corresponding to the first opening 206 and the second opening. Notch recesses 206a and 210a are provided to allow entry into the interior. That is, the thickness of the central portion of the cartridge 203 near the front surface 209 is approximately the same as the thickness of the recording disk 202 at the portion corresponding to the first opening 206 and the second opening. It has been made very thin.

A shutter member 211 for opening and closing the first opening 206 and the second opening is slidably attached to the cartridge 203. This shutter member 211 includes a first shutter plate portion 212 that closes the first opening 206 of the lower half 204, and a first shutter plate portion 212 that is disposed parallel to and opposite to the first shutter plate portion 212 of the upper half 205. A second shutter plate part 213 that closes the second opening, and these first and second shutter plate parts 21
2 and 213, and a connecting piece portion 214 that connects the proximal ends of the two.

The first shutter plate portion 212 is formed to have a rectangular portion that is narrow and long enough to close the first opening 206 of the lower half 204. The proximal end of the first shutter plate 212, which is connected to the connecting piece 214, has an engagement groove 216 formed on the outer surface of the lower half 204. A claw 217 is bent toward the second shutter plate portion 213 side. The shutter member 211 can be attached to the front surface 209 of the cartridge 203 by engaging the engagement claw 217 with the slide guide groove 216.
The sliding direction along the cartridge 203 is regulated and the cartridge 203 is prevented from coming off. On the other hand, the second shutter plate portion 213 is formed into a wide rectangular shape that is large enough to close at least the second opening.

[0031]Then, each of the shutter plate parts 212, 21
The connecting piece 214 that connects the cartridge 20
It is formed to have a width approximately equal to the thickness of No. 3. This connecting piece portion 214 connects to the front portion 20 of the cartridge 203.
By slidingly contacting the shutter member 21 along the
1 so that it can be slid stably. and,
The connecting plate portion 214 is provided such that one end side protrudes further in the one side direction than the portions of the shutter plate portions 212 and 213 that close the respective openings 206. One end side portion of this connecting piece portion 214 is connected to the first opening 20 when the shutter member 211 is slid.
6 and the second opening are located at positions corresponding to these openings when the lids are opened. The upper half 205 and the lower half 204 are connected to one end of the connecting piece 214.
A notch is formed in each of the openings 206 so that the notch recesses 206a and 210a, which are formed corresponding to the respective openings 206, are exposed to the front side. That is, the connecting piece portion 2
14 is formed with a narrow width so that it is easy for the magnetic head device and the optical pickup device to enter the cartridge 203 in close proximity to the recording disk 202. I'm used to it.

Furthermore, the connecting piece portion 214 is provided with a spring locking piece to which one end of a torsion coil spring (not shown) disposed inside the cartridge 203 is locked. This torsion coil spring is connected to the shutter member 211.
is constantly biased to move in the direction of closing the first opening 206 and the second opening. This spring locking piece is attached to the first and second shutter plate portions 212, 21.
3, and is bent toward the inside of the cartridge 203 so as to be substantially parallel to the torsion coil spring 3, and one arm portion of the torsion coil spring is secured to the tip end thereof. The other arm of the torsion coil spring is
It is latched to a corner of the front side inside the cartridge 203.

As shown in FIG. 27, the shutter member 211 is located at a position where the first opening 206 and the second opening are closed, and at a position where these openings are opened, as shown in FIG. The cartridge 203 is slidable in the direction along the front surface 209 of the cartridge 203 as indicated by the arrow C in FIG.

When the shutter member 211 is moved by the shutter release pin of the disc cartridge loading device according to the present invention, the shutter release pin is fitted into the front face portion 209 of the cartridge 203 and the shutter release pin is inserted into the front face portion 209 of the cartridge 203. A shutter release pin fitting portion 219 is formed in a cutout for holding the first opening 206 and the second opening in an open state. This shutter opening pin insertion part 219 is located at a position where one end of the connecting piece part 214 of the shutter member 211 faces when the first opening 206 and the second opening are opened. It is formed as a cutout groove extending from the main surface of the half 205 to the lower main surface 207 .

Further, a positioning pin is engaged with the lower half 204 for positioning the mounting position of the disc cartridge 201 in the horizontal direction when the disc cartridge 201 is installed in the recording and/or reproducing apparatus. A pair of positioning pin engagement holes 225 and 226 are provided. Furthermore, an erroneous erasure prevention member 227 is attached to the lower half 204 near one of the positioning pin engagement holes 226 for indicating whether or not an information signal can be written to the recording disk 202. Furthermore, cartridge inject pin fitting recesses 228 into which the cartridge inject pins of the disk cartridge loading device according to the present invention fit are formed near the front of both side surfaces of the cartridge 203.

[2] Configuration of recording and/or reproducing device (FIGS. 1 to 6) Next, the disc cartridge loading device according to the present invention is applied to a recording and/or reproducing device using the above-mentioned disc cartridge 201 as a recording medium. The configuration of the playback device will be explained.

In this recording and/or reproducing apparatus, the disk cartridge 201 is installed at a predetermined installation position,
Recording disk 202 of this disk cartridge 201
The device is configured to include various mechanisms and means sufficient to write and/or read information signals to and from the device.

That is, in this recording and/or reproducing apparatus, the disc cartridge 201 is mounted on the mounting position on the chassis 6, and the recording disc 20 is mounted on the chassis 6.
2 on the disk table 11 of the disk rotation operation device 2, the disk cartridge loading device according to the present invention is configured to load the recording disk 202 onto the disk table 11 of the disk rotation operation device 2, and to load the recording disk 202 onto the disk table 11 and rotate the recording disk 202. An optical pickup device 4 that is moved in the radial direction of the recording disk 202 to write and/or read information signals to the recording disk 202, and applies an external magnetic field when writing information signals to the recording disk 202. A mechanism such as a magnetic head device 5 is provided.

[2-a] Configuration of cartridge mounting section, disk rotation operating device, and optical pickup device (FIGS. 1 to 3) On the chassis 6, as shown in FIGS. 1 to 3, there is a disk rotation operating device. 2. Mechanisms such as an optical pickup device 4 and a movement operation mechanism for the optical pickup device 4 are arranged to constitute the cartridge mounting section 1. The cartridge mounting section 1 is configured as a mechanism in which the disk cartridge 201 is mounted on the upper surface side of the chassis 6. This cartridge mounting portion 1 is configured to engage with positioning pin engagement holes 225 and 226 provided in the disk cartridge 201.
The disk cartridge positioning pins 7 and 8 are installed on the chassis 6. When the disk cartridge 201 is installed in the cartridge mounting section 1, the disk cartridge positioning pins 7 and 8 engage with the positioning pin engagement holes 225 and 226, so that the disk cartridge 201 is positioned at a predetermined mounting position with respect to the chassis 6. is positioned and installed. The cartridge mounting section 1 also has height reference pins 7a and 8a planted on the chassis 6 for holding the disk cartridge 201 at a predetermined height with respect to the chassis board 6. There is.

A disk rotation operating device 2 for rotating the recording disk 202 of the disk cartridge 201 mounted in the cartridge mounting section 1 is disposed approximately at the center of the chassis 6 constituting the cartridge mounting section 1. ing. This disk rotation operating device 2 includes a spindle motor 9. As shown in FIG. The spindle motor 9 is attached to the lower surface of the chassis 6, and has a drive shaft that becomes a spindle shaft 10 protruding from the upper surface of the chassis 6. A disk table 11 on which the recording disk 202 is mounted is attached to the tip side of the spindle shaft 10. This disk table 11
, the chucking hub 20 of the recording disk 202 is
A magnet 12 for attracting the disk is provided so that the disk 2a can be held by magnetic attraction force.

[0041] Further, on the chassis 6, an optical pickup device 4 is disposed. This optical pickup device 4 has an objective lens 13 facing the signal recording surface of the recording disk 202 mounted on the disk table 11 in order to focus and irradiate the signal recording surface of the recording disk 202 with a laser beam. It is arranged so that The optical pickup device 4 is slidably supported by a pair of feed guide shafts 15 and 16 that are spanned within an optical pickup device mounting hole 14 formed in the approximate center of the chassis 6. The optical pickup device 4 supported in this way is attached to the optical pickup device mounting hole 14.
It is composed of a pair of optical pickup device drive magnets 17 and 18 and a drive coil 19 disposed inside.
A so-called linear motor device is operable to move the recording disk 202 in the radial direction along the feed guide shafts 15 and 16 over the inner and outer circumferences of the recording disk 202 mounted on the disk table 11. ing.

[2-b] Configuration of magnetic head device and magnetic head device elevating mechanism (FIGS. 1 to 3, and FIGS. 7 to 8)
) A magnetic head device 5 is connected to the optical pickup device 4 and is moved radially across the inner and outer peripheries of the recording disk 202 in synchronization with the optical pickup device 4. As shown in FIG. 7, this magnetic head device 5 has a magnetic head 20 equipped with a magnetic field generating coil that applies a magnetic field of a predetermined intensity to the signal recording layer of the recording disk 202. The magnetic head 20 is attached to and supported by a magnetic head support member 21 that is slidably supported by a magnetic head elevating frame member of a magnetic head device elevating mechanism, which will be described later.

The magnetic head support member 21 is provided with a distance sensor (not shown) for keeping the distance between the magnetic head 20 and the recording disk 202 constant. Further, as shown in FIG. 3, this magnetic head support member 21 is provided with a pair of connecting members 21a and 21b that hang down toward the optical pickup device 4 side, and the lower end sides of these connecting members 21a and 21b are connected to the optical pickup device 4. It is adapted to be connected to device 4. Therefore, the magnetic head support member 21 is slid in the radial direction over the inner and outer peripheries of the recording disk 202 in synchronization with the optical pickup device 4, and the magnetic head supporting member 21 is always
0 to face the objective lens 13 of the optical pickup device 4 via the recording disk 202.

The magnetic head device 5 thus constructed is moved toward and away from the main surface of the recording disk 202 by the magnetic head device elevating mechanism 22 in a substantially perpendicular direction. The magnetic head device elevating mechanism 22 includes a magnetic head elevating frame member 23 that supports a magnetic head supporting member 21 to which the magnetic head 20 is attached.
and a magnetic head elevating lever 24 for moving the magnetic head elevating frame member 23 in a direction substantially perpendicular to the main surface of the recording disk 202.

The magnetic head elevating frame member 23 is located on the chassis 6 and is attached to the disk cartridge 201.
A pair of elevating shafts 25 installed in a position that does not contact the
, 26 so as to be movable in the vertical direction, that is, in the direction toward and away from the chassis 6 as indicated by arrow D in FIG. The side of the magnetic head elevating frame member 23 facing the optical pickup device 4 has an axial direction parallel to the main surface of the recording disk 202, and an axial direction parallel to the radial direction of the recording disk 202. A pair of support shafts 27 and 28 are attached toward the. The magnetic head support member 21 is attached to each of the support shafts 27 and 28 as indicated by arrow E in FIG.
, 28, that is, along the radial direction of the recording disk 202. Further, at a position near the one of the elevating shafts 26 of the magnetic head elevating frame member 23, an elevating engagement that slidingly engages with a magnetic head elevating lever 24 for elevating the magnetic head elevating frame member 23 is provided. A dowel pin 29 is provided. The elevating engagement pin 29 is attached to the tip side of an elevating engaging pin attachment member 30 that is provided to hang down toward the chassis 6 from one side of the magnetic head elevating frame member 23.

The magnetic head elevating lever 24 slidingly engages with the elevating engaging pin 29 to operate the magnetic head elevating frame member 23 up and down.
It is arranged on the chassis 6 at a position corresponding to . This magnetic head elevating lever 24 is connected to a support shaft 31.
It is rotatably supported by the chassis 6 via the support shaft 31 as shown by arrow F in FIG. The magnetic head elevating lever 24 has a fan-shaped part 32 which is formed in a fan shape, and a main part of the fan shape is supported by the chassis 6 via the support shaft 31, and a fan-shaped part 32 that rises from the free end side part of the fan part 32. It consists of a lifting cam section 33. The fan-shaped portion 32 has a
A minute protrusion 32a is provided so as to make point contact with the chassis 6 to facilitate rotation of the fan-shaped portion 32 while sliding on the chassis 6. The fan-shaped portion 32 has a lever operating pin 3 fitted into an elevating lever operating member provided on an eject plate of a disk cartridge loading device, which will be described later.
4 have been planted.

The elevating cam portion 33 is a so-called end cam, and the upper end of the rising wall is slidably engaged with the elevating engagement pin 29. This elevating cam portion 33 has a parallel portion 33 parallel to the chassis 6.
a, and an inclined portion 33b that slopes from the parallel portion 33a toward the fan-shaped portion 32 side.

[0048] The lifting engagement pin 2 is attached to the parallel portion 33a.
In the state in which the magnetic head 9 is abutted and engaged, that is, in the eject state, as shown in FIG.
At least when the disk cartridge 201 is inserted, the magnetic head 20 is held in a position where it does not come into contact with the disk cartridge 201.

On the other hand, in a state in which the elevating engagement pin 29 abuts and engages with the lower end side of the inclined portion 33b, that is, in a loading state, as shown in FIG. 8, the magnetic head elevating frame member 23 is located close to the recording disk 202, and is held at a position that allows the magnetic head 20 to apply a magnetic field to the signal recording layer of the recording disk 202.

Therefore, the magnetic head support member 21
is slidably supported by the magnetic head elevating frame member 23, so that it can be moved in the radial direction of the recording disk 202 over the inner and outer peripheries of the recording disk 202, and the magnetic head elevating frame 23 is slidably supported by the magnetic head elevating frame member 23. Since the elevating engagement pin 29 provided on the member 23 is slidably engaged with the elevating cam portion 33, when the magnetic head elevating lever 24 is rotated, the magnetic head elevating lever 24 is moved against the signal recording surface of the recording disk 202. The contact and separation operations are performed in a substantially vertical direction.

Further, the magnetic head elevating frame member 23 has a position near the other elevating shaft 25.
A method for holding the magnetic head lifting frame member 23 at the height position when the magnetic head supporting member 21 is moved to a position close to the recording disk 202 will be described later. An engagement surface 23a is provided for engagement with a magnetic head device holding mechanism. The engaging surface 23a is formed as an inclined surface that is inclined toward the chassis 6 and toward the side opposite to the side where the magnetic head support member 21 is provided.

[2-c] Configuration of disk cartridge loading device (FIGS. 1 to 6, and FIGS. 9 to 25)
) The disc cartridge loading device according to the present invention is a device that mounts the disc cartridge 201 at a predetermined mounting position of the cartridge mounting section 1, that is, performs a so-called loading operation. As shown in FIGS. 1 to 6, this disk cartridge loading device has a cartridge holder 35 that holds a disk cartridge 201 into which a disk cartridge 201, which is loaded by this disk cartridge loading device, is inserted. . Further, this disk cartridge loading device includes a cartridge holder support frame 36 that is mounted on the chassis 6 and supports the cartridge holder 35 movably in the direction toward and away from the chassis 6; The ejector plate 37 includes an eject plate 37 that is slidably supported in a direction parallel to the chassis 6 and operates to move the cartridge holder 35 toward and away from the chassis 6.

As shown in FIGS. 5, 9, and 10, the cartridge holder 35 is constructed by bending a plate-like material, and has a space in which the disk cartridge 201 can be inserted, and has a front side and a lower side. It is constructed in the form of an open, thin casing. This cartridge holder 3 serves as an entrance when inserting the disk cartridge 201 into the cartridge holder 35.
The cartridge insertion slit portion formed on the front side of 5 has a width of 6.5 mm and a length of 90.5 mm. Both side wall portions of the cartridge holder 35 that face each other form cartridge holding portions 39 and 40 that hold the disk cartridge 201 and have a substantially U-shaped cross section. A pair of left and right guide pins 41, 42 and 43, 44 are provided protruding from the outer side surfaces of these cartridge holding parts 39, 40 on the front side and the rear side, respectively. Note that these guide pins 41, 42, 43, and 44 are inserted into and engaged with guide grooves provided in a cartridge holder support frame 36 and cam grooves provided in an eject plate 37, which will be described later.

A shutter release arm 47 is attached to the upper plate portion 45 of the cartridge holder 35, with its base end rotatably supported. The cartridge holder 35 is located on the tip side of the shutter release arm 47.
A shutter release pin 46 is implanted to move the shutter member 211 by sliding in contact with the front surface 209 of the disk cartridge 201 inserted into the disc cartridge 201 .

The shutter opening arm 47 is formed into a flat plate shape, and its base end is rotatably supported by a first support shaft 48 approximately at the center of the upper plate portion 45 . The shutter opening pin 46, which is implanted on the tip side of the shutter opening arm 47, is attached to the upper plate portion 45 along an arcuate locus of movement about the first support shaft 48 of the shutter opening pin 46. Shutter release pin guide groove 49
The cartridge holder 35 is suspended within the cartridge holder 35 through the cartridge holder 35. The shutter opening pin guide groove 49 is formed to have a groove width slightly larger than the outer diameter dimension of the shutter opening pin 46 in order to facilitate movement of the shutter opening pin 46. Further, on the proximal end side of the shutter release pin 46, a lower side of the upper plate portion 45 is provided.
A ring-shaped shutter release pin escape prevention member 50 is externally fitted. The shutter release pin escape prevention member 50 is a so-called washer large enough to straddle the shutter release pin guide groove 49, and is externally fitted onto the shutter release pin 46 and attached to the lower surface of the upper plate portion 45. It is attached so as to be substantially in contact with the portion 45b. This shutter release pin escape prevention member 50 allows the shutter release pin 4 to
6 is configured to be able to smoothly move within the shutter release pin guide groove 49 without being pushed out above the cartridge holder 35. Therefore, the shutter release pin 46 is connected to the front surface 20 of the cartridge 203.
9, and the shutter member 211 can be moved without riding on the upper side of the shutter member 211.

The shutter opening arm 47, which is rotatably mounted in this manner, moves the shutter opening pin 46, indicated by arrow G in FIG. 5, to the front side of the cartridge holder 35 by the first tension coil spring 51. It is rotationally biased in the direction of movement. As shown in FIGS. 5 and 9, the first tension coil spring 51 has one end locked to a first spring locking piece 51a formed by cutting and raising the shutter opening arm 47, and the other end By being locked by a second spring locking piece 51b cut and raised on a cartridge inject arm 57, which will be described later, the shutter opening pin 46 is moved to the front end position of the shutter opening pin guide groove 49. That is, it is located at the initial position. The second spring locking piece 51b is provided near a third support shaft 68 that rotatably supports the cartridge inject arm 57 on the cartridge holder 35.

Further, when the disk cartridge 201 is inserted into the cartridge holder 35, the cartridge 203 of the disk cartridge 201 is placed on the upper plate portion 45 of the cartridge holder 35 on the inner side of the cartridge holder 35. A cartridge injection mechanism 53 is provided for forcibly drawing the cartridge into the cartridge. This disk cartridge injection mechanism 53 is
A cartridge inject member 55 having a cartridge inject pin 54 that fits into a cartridge inject pin insertion hole 228 provided in the disk cartridge 201, and the cartridge holder 35.
The cartridge injection lever 56 is comprised of a cartridge inject lever 56 that is slidably supported on the cartridge inject member 55 and rotatably supports the cartridge inject member 55, and a cartridge inject arm 57 that is rotatably engaged with the cartridge inject lever 56.

[0058] The cartridge inject lever 56
is engaged with a pair of guide shafts 61 and 62 installed on the upper surface part 45a of the upper plate part 45 of the cartridge holder 35, as shown by the arrow I in FIG.
The disk cartridge 201 is slidable in a direction along the insertion and ejection direction with respect to the cartridge holder 35. This cartridge inject lever 56 is provided with elongated slide guide grooves 63 and 64 at positions corresponding to the guide shafts 61 and 62, respectively. are inserted into the cartridge holder 35 in a corresponding manner and are slidably supported by the cartridge holder 35.

[0059] The cartridge inject lever 56
A third spring locking piece 65 to which the other arm portion of a first torsion coil spring 59 to be described later is locked is cut and raised near the rear end side of the cartridge holder 35. At the same time, an attachment hole 66 for attaching the second support shaft 58 is bored. An engaging pin 69 of the cartridge inject arm 57 for slidingly operating the cartridge inject lever 56 is rotatably engaged on the front end side of the cartridge inject lever 56, which is the front side of the cartridge holder 35. A matching notch 67 is provided.

The cartridge inject member 55 is bent into a substantially U-shape, and has one upper end facing the second end toward the rear end of the cartridge inject lever 56.
It is rotatably supported via a support shaft 58 . The other end of the cartridge inject member 55, which is the lower side, extends toward the front side of the cartridge holder 35 to form a substantially L-shaped extension portion 55a. A first torsion coil spring 59 is attached to the second support shaft 58.
The coil part is wound. The first torsion coil spring 59 rotates the cartridge inject member 55 in a direction in which the cartridge inject pin 54 moves outward of the cartridge holder 35 as indicated by arrow H in FIG. It is strong. That is, one arm of the first torsion coil spring 59 is locked to the third spring locking piece 60 of the cartridge inject member 55, and the other arm is locked to the third spring locking piece 60 of the cartridge inject lever 56. It is locked by a fourth spring locking piece 65. The distal end side of the extending portion 55a projects further outward than the cartridge holding portion 40 of the cartridge holder 35. The cartridge inject pin 54 is installed on the distal end side of the extending portion 55a. This cartridge injection pin 54 is
The cartridge holder 35 is urged to move outwardly by the first torsion coil spring 59 via the cartridge injection member 56 .

[0061] The cartridge inject arm 57
is formed as a flat plate-like arm, and is rotatably supported approximately at the center by the upper plate portion 45 of the cartridge holder 35 via a third support shaft 68 . The cartridge inject arm 57 is located close to and substantially parallel to the shutter opening arm 47, and is disposed on the front side of the cartridge holder 35 with respect to the shutter opening arm 47.

This cartridge inject arm 57
At one end side, the cartridge inject lever 5 is installed.
An engagement pin 69 that engages with the engagement notch 67 of No. 6 is planted, and a fifth spring locking piece 71 that locks one end of the second tension coil spring 70 is cut and raised. There is. On the other hand, the other end of the cartridge inject arm 57 is engaged with an eject plate 37, which will be described later, so that the cartridge inject arm 57 is positioned at its initial position and rotated by the eject plate 37. An initial position adjustment cam 72, which serves as an initial position adjustment member, is attached.

As shown in FIGS. 28 and 29, the initial position adjustment cam 72 is formed into a substantially cylindrical shape, and a support hole 72b is bored parallel to the central axis at an eccentric position from the central axis. has been done. This initial position adjustment cam 71 is inserted into the support hole 72b of the cartridge inject arm 5.
A support pin 57b erected on the other end side of the support pin 7 is inserted through the support pin 57b, and the support pin 57b is rotatable about the support pin as shown by an arrow γ in FIG. Further, this initial position adjustment cam 72 is provided with an arcuate rotation regulating slit 72a centered on the support hole 72b. This rotation regulating slit 7
A rotation regulating pin 57a, which is erected on the other end side of the cartridge inject arm 57, is inserted through 2a. That is, the initial position adjustment cam 72 connects one end of the rotation restriction slit 72a to the rotation restriction pin 57a.
It is rotatable about the support pin 57b from a position where the other end of the rotation restriction slit 72a abuts the rotation restriction pin 57a.

The cartridge inject arm 57 is moved by the second tension coil spring 70 in the direction of moving the cartridge inject lever 56 toward the rear of the cartridge holder 35, as shown by arrow J in FIG. It is rotationally biased. That is,
The second tension coil spring 70 has one end locked to the fifth spring locking piece 71 of the cartridge inject arm 57, and the other end to the cartridge holder 35.
It is locked to a sixth spring locking piece 73 that is cut and raised on the upper surface portion 45a side of the upper plate portion 45.

Further, the cartridge holder 35 includes:
An incorrect insertion prevention lever 75 is rotatably mounted to prevent the disc cartridge 201 from being inserted into the cartridge holder 35 in the wrong direction. The incorrect insertion prevention lever 75 has its proximal end placed near one side edge of the upper surface portion 45 of the cartridge holder 35, that is, near the one cartridge holding portion 40, via the fourth support shaft 76. Rotatably supported. An erroneous insertion prevention pin 77 is installed on the tip side of the erroneous insertion prevention lever 75. This erroneous insertion prevention pin 77 is suspended into the cartridge holder 35 through a notch 78 that is open on one side of the cartridge holder 35 .

This erroneous insertion prevention lever 75 is biased by a third tension coil spring 79 in a direction to move the distal end side inward of the cartridge holder 35, as shown by arrow K in FIG. There is. That is, as shown in FIG. 9, the third tension coil spring 79 is locked at one end by a seventh spring locking piece 80 formed by cutting and raising the incorrect insertion prevention lever 75, and at the other end. It is locked to an eighth spring locking piece 81 formed by cutting and raising the upper plate portion 45 of the cartridge holder 35 . Note that when the incorrect insertion prevention lever 75 is biased by the third tension coil spring 79, it comes into contact with a positioning protrusion 82 that protrudes from the opening periphery of the notch 78 of the cartridge holder 35. The erroneous insertion prevention pin 77 is placed in the initial position.

Further, the upper plate portion 45 of the cartridge holder 35 has a first notch portion 83 from which an eject plate locking lever 103 (described later) for holding the eject plate 37 at the eject position faces, and a first notch portion 83 for holding the eject plate 37 at the eject position. A second notch 84 is formed that faces the device 5. Further, the cartridge holder 35 is attached to the cartridge holder support frame 36 on the upper plate portion 45 of the cartridge holder 35.
When supported by the cartridge holder support frame 36, various structural members such as the shutter release lever 47, the cartridge inject arm 57, and the incorrect insertion prevention lever 75 provided on the upper plate portion 45 come into contact with the cartridge holder support frame 36. A bulge 88 is formed to prevent them from coming into contact with each other. The bulging portion 88 is formed in a rectangular shape having a height at least equal to or greater than the thickness of the various constituent members, located at the front side of the upper plate portion 45 of the cartridge holder 35, that is, near the insertion opening for the disk cartridge 201. The protrusion is formed with its longitudinal direction perpendicular to the direction in which the disc cartridge 201 is inserted.

Furthermore, as shown in FIG. 10, the disk cartridge 201 inserted into the cartridge holder 35 is pushed down toward the chassis 6 on the lower surface 45b of the upper plate 45 of the cartridge holder 35. A cartridge push-down member 89 is formed protruding from the front surface of the cartridge 203 to prevent the shutter release pin escape prevention member 50 from coming into contact with it. The cartridge push-down member 89 has a protrusion amount at least equal to or greater than the thickness of the shutter release pin escape prevention member 50 at a position near the shutter release pin 46 in the initial position, so that the upper plate portion 45 is on the lower side. It is formed as a bulge.

[0069] The upper plate portion 45 of the cartridge holder 35 has a position restriction so that the disc cartridge 201 to be inserted into the cartridge holder 35 is not inserted further rearward than the position where the loading operation is possible. Cartridge position regulating piece 90 for
91 is provided. This cartridge position regulating piece 9
0,91 indicates the second position along the rear edge of the upper plate portion 45.
The cartridge holder 35 is provided in the vicinity of the open end edge of the notch 84 in a bent manner so as to hang downward from the cartridge holder 35 .

Further, the side wall portion of the one cartridge holding portion 40 of the cartridge holder 35 holds the cartridge inject pin 54 in the initial state when in the eject state, and also holds the cartridge inject member 55. A cartridge inject pin position regulating piece 92 for guiding the cartridge inject pin 54 toward the inside of the cartridge holder 35 when moving rearward is bent so as to be slightly inclined outward. There is. This cartridge inject pin position regulating piece 92 is connected to the disk cartridge 20.
1 is inserted into this cartridge holder 35, the cartridge inject pin 54 is moved outward from the movement locus of the disc cartridge 201 so that the cartridge inject pin 54 does not come into contact with the disc cartridge 201. It is designed to be supported in a position where it escapes.

As shown in FIG. 4, the cartridge holder support frame 36 that supports the cartridge holder 35 has an open front side and a lower side with a space large enough to hold the cartridge holder 35. It is formed into a housing shape. This cartridge holder support frame 3
Reference numeral 6 designates cartridge holder support walls 93 and 94, in which opposite side wall portions support the cartridge holder 35 so as to be movable toward and away from the chassis 6.

[0072] Each of the above cartridge holder support walls 93, 9
4 is provided with a pair of guide grooves 95, 97, 96, 98 at the front side position and the rear side position. The front guide pins 41 and 43 provided on the cartridge holder 35 are inserted into and engaged with the front guide grooves 95 and 97 . The rear guide grooves 96 and 98 are connected to the rear guide pins 42 and 4 provided in the cartridge holder 35.
4 are slidably engaged. These guide grooves 95, 96, 97
, 98, the guide grooves 95, 97 provided at the front side of the cartridge holder 35 have a width sufficient to allow the guide pins 41, 43 to pass therethrough, and are connected to the spindle shaft 10 of the disk rotation drive device 2. It is cut out and formed as a slit groove in a parallel direction. On the other hand, the guide grooves 96 and 98 at the rear side are formed as wide grooves, and are cut out with end edges parallel to the spindle shaft 10 of the disk rotation drive device 2. The rear guide pins 42 and 44 are inserted into the wide rear guide grooves 96 and 98.
, 98 so as to slide into and engage with the rear edge portions 96a, 98a. That is, the guide pins 41 and 43 on the front side are inserted into and engaged with the corresponding guide grooves 95 and 97, and the guide pins 42 and 44 on the rear side are inserted into one side edge 96a of the guide grooves 96 and 98 on the rear side. , 98a.

[0073]The above guide grooves 95, 96, 97
, 98 are provided on the cartridge holder support walls 93, 9.
Attachment portions 99 for fixing the cartridge holder support frame 36 to the chassis 6 are provided on both edges of the lower end side of 4.
, 100 and 101, 102 are provided so as to extend inwardly facing each other. This cartridge holder support frame 36 has the above-mentioned mounting portions 99, 100, 1.
01 and 102 are fixedly supported on the chassis 6 by being screwed to the chassis 6.

Furthermore, this cartridge holder support frame 36
An eject plate locking lever 103 for holding the eject plate 37 at the eject position against the biasing force of a tension coil spring 139, which will be described later, is rotatably attached to the eject plate locking lever 103. The eject plate locking lever 103 is rotatably supported at its base end by the cartridge holder support frame 36 via a fifth support shaft 104. and,
A locking pawl 103a is provided on the distal end side of the eject plate locking lever 103 for locking the locked member 124 attached to the eject plate 37 and holding the eject plate 37 at the eject position. The locking claw 1 is located on the tip side of the eject plate locking lever 103.
A pivot pin 105 for rotating the eject plate locking lever 103 is installed near the base end of the lever 03a. The pivoted pin 105 is suspended into the cartridge holder 35 through a first notch 83 that is open on one side of the rear side of the cartridge holder 35 . Note that the tip of this rotated pin 105 is
The disk cartridge 201 is suspended at least to a position where it comes into contact with the front surface of the cartridge 203 of the disk cartridge 201 inserted into the cartridge holder 35 .

[0075] Then, the eject plate locking lever 10
3, the second torsion coil spring 106 causes the rotated pin 105 to rotate in a direction that opposes the insertion operation of the disk cartridge 201, as shown by arrow L in FIG. It is rotationally biased in the direction of moving it forward. That is, the second torsion coil spring 106 connects one arm portion to the pivoted pin 105.
The other arm portion is locked to a ninth spring locking piece 107 formed by cutting and raising the cartridge holder support frame 36 . Then, the locking claw 1
03a is released from the eject plate locking member 124, the eject plate locking lever 103
A lever rotation prevention piece 103b formed by cutting and raising the eject plate locking lever 103 is locked to the cartridge holder support frame 36, so that rotation is restricted at a predetermined position.

Note that the cartridge holder support frame 36
includes a third notch 108 facing the cartridge inject lever 56, an opening 109 facing the magnetic head device 5, and an eject plate support for slidably supporting an eject plate 37, which will be described later, in the front-rear direction. Pins 113, 114, 115, and 116 are provided.

The eject plate 37 is slidably attached to the cartridge holder support frame 36 constructed as described above. The above eject plate 37
As shown in FIG. 6, a flat slide portion 117 slides in sliding contact with the cartridge holder support frame 36.
and a pair of side wall portions 118 and 119 that are provided so as to hang down toward the chassis 6 from opposite side edge portions of the slide portion 117. This slide portion 117 includes the cartridge holder support frame 36.
Eject plate support pins 113, 114, 1 provided in
15 and 116 are respectively inserted into and engaged with the slide grooves 120
, 121, 122, and 123 are provided. These slide grooves 120, 121, 122, 123 are located at positions corresponding to the eject plate support pins 113, 114, 115, 116, respectively, with the longitudinal direction being the insertion operation direction of the disk cartridge 201, that is, the front-rear direction. , is formed in a slit shape.

A fourth tension coil spring 139 is attached to each of the side walls 118 and 119 to constantly bias the eject plate 37 forward. Each of these tension coil springs 139 has one end secured to the side wall portions 118, 119, and the other end secured to the chassis 6.
By being locked by spring locking pins 140 and 141 set up in the front side, the eject plate 37 is always elastically biased toward the front side, that is, the entrance side where the disk cartridge 201 is inserted. .

The slide portion 117 also has an eject plate locking member 1 that is locked to an eject plate locking lever 103 provided on the cartridge holder support frame 36.
24 is installed. This eject plate locking member 1
24 is the locking claw 1 of the eject plate locking lever 103.
03a, and is rotatably attached to the lower surface of the slide portion 117 with a screw 125 through a hole provided in the center of the cylinder.

Furthermore, the sliding portion 117 has a fifth notch 126 facing the cartridge inject lever 56 and an opening 1 facing the magnetic head device 5.
27, and a positioning opening 128 in which the initial position adjustment cam 72 of the cartridge inject arm 57 provided on the cartridge holder 35 engages.

One edge 12 on the rear side of the opening 127 provided approximately in the center of the slide portion 117
A magnetic head device holding mechanism 110 is provided at 7a so as to protrude inward from this opening 127. This magnetic head device holding mechanism includes the above-mentioned magnetic head device 5.
is located at a recording position close to the recording disk 202, the magnetic head device 5 is moved to the recording disk 202.
It is held at a predetermined height with respect to the signal recording surface. That is, this magnetic head device holding mechanism 110 is constructed by an elastically displaceable plate spring 111 whose distal end is bent into a substantially U-shape, and whose proximal end is attached to the cartridge holder support frame 37 with a screw 112. has been done. This magnetic head device holding mechanism 110 slides and engages the substantially U-shaped tip end side of the plate spring 111 with an engaging surface 23a provided on the magnetic head lifting frame member 23, and the magnetic head The magnetic head device 5 is held at a recording position close to the recording disk 202 by pressing and holding the lifting frame member 23.

An inject arm positioning protrusion 128a, which serves as an inject arm positioning member, is cut and raised on the edge of the positioning opening 128 on the front side of the cartridge holder 35. This inject arm positioning protrusion 128a comes into contact with the outer circumferential surface of the initial position adjustment cam 72 inserted into and engaged with the positioning opening 128 when the eject plate 37 is at the rear ejection position. When engaged, the cartridge inject arm 57 is positioned at the initial position against the biasing force of the second tension coil spring 70. This inject arm positioning protrusion 128a is attached to the cartridge holder 3.
5, when the disk cartridge 201 is inserted and the eject plate 37 slides forward,
The initial position adjustment cam 72 is released from its abutting engagement with the outer peripheral surface, and the cartridge inject arm 57 is rotated by the biasing force of the second tension coil spring 70.

In this disk cartridge loading device, by rotating the initial position adjusting cam 72 around the support pin 57b, the initial position of the cartridge inject arm 57 defined by the inject arm positioning protrusion 128a is adjusted. position,
The cartridge injection arm 57 can be adjusted by rotating as shown by arrow A in FIGS. 11 and 29. By adjusting the initial position of the cartridge inject arm 57, the initial position of the cartridge inject pin 54 is also adjusted.

At the rear side of the slide portion 117, there is an operated portion 129 into which the eject plate slide pin 130 of the eject plate slide drive mechanism 38 for sliding the eject plate 37 to the eject position is inserted and engaged. It is provided. The operated portion 129 is formed as a substantially square flat plate-like body, and the slide portion 1
It is provided as a part of the rear side part of 17. This operated portion 129 includes the eject plate slide pin 13.
The pin sliding hole 129a into which the pin 0 is inserted and engaged is formed as a substantially circular through hole.

As shown in FIG. 2, the eject plate slide mechanism 38 having the eject plate slide pin 130 inserted into and engaged with the pin sliding hole 129a is connected to an eject motor (not shown) provided below the chassis 6. , an eject plate operating gear 13 provided with an eject plate slide pin 130 rotationally driven by this motor.
1. The eject motor and the eject plate operating gear 130 are connected by a plurality of connecting gear mechanisms 132 of different sizes. The eject plate slide pin 130 is installed at an eccentric position of the eject plate operating gear 131.

When an eject operation button (not shown) is operated, this eject plate slide mechanism 38 drives the eject motor to move the eject plate operation gear 131.
drives the rotation. Then, the eject plate 37 allows the eject plate slide pin 130 to fit into the pin sliding hole 1.
By slidingly engaging the inner peripheral edge of 29a, the fourth
It is slid rearward against the biasing force of the tension coil spring 139 to reach the eject position. The eject plate 37 in the eject position is held at the eject position by the eject plate locking member 124 being locked by the eject plate locking lever 103. Note that, after the eject plate 37 is brought to the eject position, the eject plate slide pin 130 is moved to a forward position where it does not come into sliding contact with the pin sliding hole 129a, and then stopped. .

Side wall portions 118 and 119 provided on opposing sides of the slide portion 117 have cam grooves 135 and 136 for moving the cartridge holder 35 in the direction toward and away from the chassis 6; 137
, 138 are provided, respectively. These cam grooves 13
5, 136, 137, 138 are horizontal portions 135a, 136a, 137a, 138a parallel to the chassis 6;
First sloped portions 135b, 136b are sloped gently toward the rear from the horizontal portions 135a, 136a, 137a, 138a so as to approach the chassis 6 side.
, 137b, 138b, and a second inclined portion 135c which is further steeply inclined towards the chassis 6 toward the rear side.
136c, 137c, and 138c.

The cartridge holder 35 is supported by inserting the guide pins 41, 42, 43, 44 into the cam grooves 135, 136, 137, 138 formed in this manner. This cartridge holder 3
5, when the eject plate 37 is moved in the front-rear direction parallel to the chassis 6, the cam grooves 135, 13
6, 137, 138 with guide pins 41, 42, 43, 4
4 is guided and operated to move toward and away from the chassis 6.

A magnetic head elevating lever operating member 142 is protruded from the rear side of one side wall portion 118 of the eject plate 37 and extends inward. The magnetic head elevating lever operating member 142 engages with the lever operating pin 34 of the magnetic head elevating lever 24, and rotates the magnetic head elevating lever 24 in accordance with the sliding of the eject plate 37 in the front and back direction. do. A lever operating pin guide groove 142a into which the lever operating pin 34 is fitted and engaged is formed in the vicinity of the tip of the magnetic head elevating lever operating member 142 as an elongated groove. When the eject plate 37 is slid and the magnetic head elevating lever 24 is rotated, the magnetic head elevating frame member 23 is moved in a direction substantially perpendicular to the signal recording surface of the recording disk 202. Move operation is performed.

[3] Description of disc cartridge mounting operation (FIGS. 11 to 25) As described above, the above-mentioned recording and/or reproducing apparatus to which the disc cartridge loading device of the present invention is applied is used. The operation for mounting the disk cartridge 201 will be explained.

[3-a] State before inserting the disk cartridge (FIGS. 11 to 14) First, the state before inserting the disk cartridge 201 will be described. To install the disk cartridge 201, operate the eject button (not shown) and press the button shown in FIGS. 11 to 14.
As shown in FIG. 3, the eject plate 37 is moved to the rear eject position, and the cartridge holder 35 and the magnetic head elevating frame member 2 that supports the magnetic head 20 are removed.
3 is moved to a raised position away from the disk table 11 of the disk rotation drive device 2.

That is, by operating the eject button, the eject plate slide mechanism 38 is driven, and the fourth
The eject plate 37 is slid rearward against the biasing force of the tension coil spring 139 and the second tension coil spring 70 tensioned on the cartridge inject arm 57. The eject plate locking lever 103 of the cartridge holder support frame 36 is connected to the eject plate locking member 12 provided on the eject plate 37.
4 is locked, and the eject plate 37 is held at the eject position.

Also, at this time, the initial position adjustment cam 72 of the cartridge inject arm 57, which is inserted into and engaged with the positioning opening 128 of the eject plate 37,
The inject arm positioning protrusion 128a on the front side of the positioning opening 128 comes into contact with the inject arm positioning protrusion 128a and is held at the initial position on the rear side. That is, the cartridge inject arm 57 is held at the initial position where the outer peripheral surface of the initial position adjustment cam 72 is brought into contact with the inject arm positioning protrusion 128a.

[0094] The cartridge inject lever 56 engaged with the cartridge inject arm 57 is placed in the initial position on the front side. At this time, the cartridge inject lever 56 causes the cartridge inject member 55 to abut and engage the cartridge inject pin 54 with the cartridge inject pin position regulating piece 92 of the cartridge holder 35 . That is, the cartridge inject pin 54 is held at a position away from the cartridge 203 of the disk cartridge 201 inserted into the cartridge holder 35 and away from the cartridge 203 .

Further, the shutter release pin 46 is brought to the above-described initial position by the first tension coil spring 51 stretched between the shutter release lever 47 and the cartridge inject arm 57. There is. On the other hand, the erroneous insertion prevention pin 77 is also connected to the erroneous insertion prevention lever 75 and the cartridge holder 35.
the third tension coil spring 7 stretched across the
9, the cartridge is at an initial position suspended within the cartridge holder 35.

The magnetic head elevating frame member 23 is pressed and supported toward the chassis 6 by the leaf spring 111 attached to the eject plate 37 in the loading state, but if the eject plate 37 slides rearward. At times, it is released by the pressure support by the plate spring 111. Therefore, the lifting operation for moving the magnetic head lifting/lowering frame member 23 in a direction away from the chassis 6 is performed against only the own weight of the magnetic head lifting/lowering frame member 23. Therefore, this magnetic head elevating frame member 23
The load applied to the motor of the eject plate slide mechanism 38 due to the rise of the eject plate slide mechanism 38 is small, and a motor with relatively low output can be used as the motor.

The magnetic head elevating frame member 23, which is in the eject position spaced apart from the chassis 6 in this way, has the elevating engagement pin 29 attached to the parallel portion 33b of the elevating cam portion 33 of the magnetic head elevating lever 24. are abuttingly engaged. At this time, the magnetic head lifting frame member 23 moves the magnetic head 20 to the cartridge holder 35.
The disc cartridge 201 is held in a position where it does not come into contact with the disc cartridge 201 that is inserted into the disc cartridge 201.

[3-b] Description of the mid-insertion state of the disk cartridge (FIGS. 15 to 20) In the ejected state as described above, the disk cartridge 201 is moved forward in the direction in which the shutter member 211 is attached. The cartridge holder 35 is inserted into the cartridge holder 35 from the front side.

When the disc cartridge 201 is inserted into the cartridge holder 35, the front corner of the cartridge 203 first comes into contact with the erroneous insertion prevention pin 77. At this time, disk cartridge 2
01 is inserted in the correct direction, the incorrect insertion prevention pin 77 is moved outward by the cartridge 203 by rotating the incorrect insertion prevention lever 75 as shown by arrow M in FIG. Then, the cartridge 203 can be inserted. On the other hand, if the disk cartridge 201 is inserted in the wrong direction, the erroneous insertion prevention lever 75 is not rotated, and the erroneous insertion prevention pin 7
7 prevents the insertion operation of the cartridge 203 into the cartridge holder 35.

When the disk cartridge 201 is further inserted into the rear side of the cartridge holder 35, as shown in FIG.
The shutter release pin 46 comes into contact with the front part 209 of 03. From this state, the disk cartridge 201
When inserted into the rear side of the cartridge holder 35, the shutter release pin 46 comes into contact with one end of the shutter member 211, as shown in FIG. Against the biasing force of the torsion coil spring, arrow N in Fig. 20
An opening 206 of the disk cartridge 201 shown in
, 210 in the direction of opening the lid. At this time, while extending the first tension coil spring 51, the shutter release arm 47 resists the biasing force of the first tension coil spring 51 and moves the shutter release pin 4
6 is the rear side.

When the disk cartridge 201 is further inserted into the rear side of the cartridge holder 35, the pivoted pin 105 of the eject plate locking lever 103, which is rotatably supported by the cartridge holder support frame 36, and the The front part 209 of the cartridge 203 comes into contact with it. The eject plate locking lever 103 is rotated by the cartridge 203 in a direction in which the rotated pin 105 is on the rear side as indicated by arrow O in FIG. 20, and the eject plate is locked by the locking pawl 103a. Member 124
Release the lock on. As a result, the eject plate 37 is slid forward by the fourth tension coil spring 139 stretched between the eject plate 37 and the chassis 6.

[0102] The eject plate 37 slid forward in this way is attached to the inject arm positioning protrusion 1.
The contact engagement with the initial position adjustment cam 72 by 28a is released. Therefore, the cartridge inject arm 57 is rotated by the biasing force of the second tension coil spring 70, and the cartridge inject lever 55 and the cartridge inject member 56 are rotated.
is moved to the rear. Then, the above cartridge 2
The cartridge inject pin 54, which had been held at a position on the outside of the movement locus of 03, moves inward of the cartridge holder 35 guided by the cartridge inject pin position regulating piece 92, and the cartridge 2
03 into the cartridge inject pin insertion hole 228. In this disk cartridge loading device, the cartridge inject pin 5
The initial position of 4 is the cartridge inject arm 5.
Since the cartridge inject pin 54 can be adjusted along with the initial position of the cartridge inject pin 7, the cartridge inject pin 54 can be accurately fitted into the cartridge inject pin insertion hole 228.

Then, the cartridge inject member 55 is further moved rearward by the biasing force of the second tension coil spring 70, and moves the cartridge 203 rearward as shown by arrow P in FIG. , performs a so-called injection operation. The disk cartridge 201 is located at an injection position on the rear side of the cartridge holder 35, and each opening 206, 210 of the cartridge 203 is opened.

[3-c] Explanation of the state in which the disk cartridge has been completely installed (FIGS. 21 to 25) Then, as the eject plate 37 slides forward, the cartridge holder 35 moves to the position shown in FIGS. 21 to 25. As shown in
Cam grooves 135, 136, 137 of this eject plate 37
, 138, the guide pins 41, 42, 43, 44 are moved in a direction approaching the chassis 6. That is, the cartridge holder 3
5, the guide pins 41, 42, 43, 44 are connected to the cam grooves 135, 136, 137, 138 and the guide grooves 95, 96, 97 of the cartridge holder support frame 36.
, 98, and is supported by the eject plate 37 and the cartridge holder support frame 36.

When the cartridge holder 35 is moved in the direction approaching the chassis 6, the disk cartridge 201 is mounted at the mounting position on the cartridge mounting section 1. That is, the disk cartridge 201 is held with the cartridge 203 being regulated in position by the height positioning pins 7a, 8a provided on the chassis 6 and the disk cartridge positioning pins 7,8. In addition, the recording disk 20
2 is mounted on the disk table 11.

Then, as the eject plate 37 slides forward, the magnetic head lift lever 24 is rotated by the magnetic head lift lever operating member 142 provided on the eject plate 37, and the magnetic head lift lever 24 is rotated. The elevating frame member 23 is moved toward the chassis 6, as shown in FIGS. 23 and 24. As the magnetic head elevating frame member 23 moves in this manner and the eject plate 37 slides forward, the leaf spring 111 attached to the eject plate 37 is activated to eject the magnetic head, as shown in FIG. Engagement surface 2 of head elevating frame member 23
3a, and presses and supports this magnetic head elevating frame member 23. Therefore, the magnetic head 20 supported by the magnetic head elevating frame member 23 faces into the opening 210 of the cartridge 203, and the magnetic head 20 is placed inside the recording disk 20.
It is held at a predetermined height position with respect to the second signal recording layer. Further, at this time, the optical pickup device 4 faces the signal recording surface of the recording disk 202, and information signals can be written and/or read from the recording disk 202.

[0107]

As described above, in the disc cartridge loading device according to the present invention, the disc cartridge is rotatably supported by the cartridge holder into which the disc cartridge is inserted, and is rotatably biased in one direction by the elastic biasing member. At the same time, the cartridge inject arm that has been brought into contact with the inject arm positioning member and positioned at the initial position is positioned between the cartridge inject arm and the inject arm positioning member with respect to the inject arm positioning member. The initial position is varied by moving the initial position adjusting member, which is interposed so as to be movable, with respect to the inject arm positioning member.

Therefore, in this disk cartridge loading device, the initial position of the cartridge inject arm can be finely adjusted by moving the initial position adjusting member.

That is, the present invention provides a disk cartridge in which the initial position of the cartridge inject arm is accurately positioned and a good injecting operation can be performed without making manufacturing difficult or complicated. A loading device can be provided.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the configuration of a main part of a recording and/or reproducing device to which a disc cartridge loading device according to the present invention is applied.

FIG. 2 is a reduced exploded perspective view of main parts of the recording and/or reproducing apparatus.

FIG. 3 is a perspective view showing the configuration of a cartridge mounting section that constitutes the recording and/or reproducing apparatus.

FIG. 4 is a perspective view showing the structure of a cartridge holder support frame constituting the disc cartridge loading device.

FIG. 5 is a perspective view showing the structure of a cartridge holder that constitutes the disk cartridge loading device.

FIG. 6 is a perspective view showing the structure of an eject plate constituting the disk cartridge loading device.

FIG. 7 is a perspective view showing the state of the magnetic head device elevating mechanism constituting the recording and/or reproducing device at the time of ejection.

FIG. 8 is a perspective view showing the state of the magnetic head device elevating mechanism constituting the recording and/or reproducing device during loading.

9 is an exploded perspective view of the cartridge holder shown in FIG. 5. FIG.

FIG. 10 is a perspective view of the cartridge holder viewed from the back side.

FIG. 11 is a plan view of essential parts of the recording and/or reproducing apparatus in an ejected state.

FIG. 12 is a right side view of the main parts of the recording and/or reproducing apparatus in an ejected state.

FIG. 13 is a left side view of the main parts of the recording and/or reproducing apparatus in an ejected state.

FIG. 14 is a front view of essential parts of the recording and/or reproducing apparatus in an ejected state.

FIG. 15 is a bottom view showing a state in which the disk cartridge is being inserted into the cartridge holder.

FIG. 16 is a bottom view showing a state in which the disk cartridge is inserted into the cartridge holder and in which the cartridge and the shutter release pin are engaged.

FIG. 17 is a longitudinal cross-sectional view viewed from the front side showing a state in which the shutter release pin is engaged with the disk cartridge.

FIG. 18 is a longitudinal cross-sectional view, viewed from the side, showing the state of engagement of the shutter release pin with the disk cartridge.

FIG. 19 is a longitudinal sectional view viewed from the front side showing a state in which the shutter member of the disk cartridge is in the middle of being opened by the shutter release pin.

FIG. 20 is a bottom view showing a state in which the shutter member of the disk cartridge is opened by the shutter release pin.

FIG. 21 is a bottom view showing a retracted state of the disc cartridge.

FIG. 22 is a plan view showing a state in which loading of the recording and/or reproducing device is completed.

FIG. 23 is a right side view of the recording and/or reproducing device in a loading completed state.

FIG. 24 is a left side view of the recording and/or reproducing device in a loading completed state.

FIG. 25 is a front view of the recording and/or reproducing device in a loading completed state.

FIG. 26 is a bottom perspective view showing the structure of the disc cartridge loaded into the recording and/or reproducing apparatus by the disc cartridge loading device according to the present invention, with the shutter member opened;

FIG. 27 is a perspective view of the bottom side of the disk cartridge showing a state in which the shutter member is closed.

FIG. 28 is a plan view showing the configuration of a cartridge inject arm that constitutes the disk cartridge loading mechanism.

FIG. 29 is an enlarged plan view of the main parts of the cartridge inject arm.

[Explanation of symbols]

35・・・・・・・・・・・・・・・・・・Cartridge holder 57・・・・・・・・・・・・・・・
...... Cartridge inject arm 68 ...... Third pivot shaft 70 ......・・・・・・・・・
...Second tension coil spring 72...
・・・・・・・・・・・・・・・Initial position adjustment cam 1
28a・・・・・・・・・・・・・・・ Inject arm positioning protrusion

Claims (1)

[Claims] 1. A cartridge holder into which a disk cartridge configured by storing a recording disk is inserted; and a cartridge holder rotatably supported by the cartridge holder and biased to rotate in one direction by an elastic biasing member. The cartridge inject arm is brought into contact with and engaged with the cartridge inject arm to restrict rotation of the cartridge inject arm against the biasing force of the elastic biasing member. an injector that is positioned at an initial position and, when the disc cartridge is inserted into the cartridge holder, is moved in accordance with the movement of the disc cartridge to release restriction on rotation with respect to the cartridge inject arm; The arm positioning member is moved according to the rotation of the cartridge inject arm, and when the disc cartridge is inserted into the cartridge holder, the arm positioning member is engaged with the cartridge of the disc cartridge, and the elastic biasing member is moved. A cartridge inject pin that draws the cartridge to a predetermined position inside the cartridge holder by a biasing force, and a cartridge inject pin that moves relative to the inject arm positioning member between the cartridge inject arm and the inject arm positioning member. 1. A disk cartridge loading device comprising: an initial position adjusting member which is operably interposed and is moved relative to the inject arm positioning member to change the initial position of the cartridge inject arm.