JPH07182759A - Disk loading device - Google Patents

Abstract

PURPOSE:To miniaturize the constitution of a device by providing a cartridge holder holding a disk cartirdge so that it is movable back and forth and a cartridge moving plate engaged with the disk cartridge. CONSTITUTION:A torsion coil spring 107 becoming a compression spring member by being engaged with the cartridge moving plate 5 and the cartridge holder 4 is provided in this device. The spring 107 has the elasiticity in a direction along which respective spring hooking pieces 93 and 144 are separated. Then, when the cartridge moving plate 5 is positioned at a position fronter than the nearly center position of the cartridge holder 4 where the plate 5 becomes nearest to spring hooking pieces 93, 144, the spring 107 energizes the moving plate 5 to move in a forward direction shown by an arrow A. Further, when the moving plate 5 is positioned at a position rearer than the nearly center position of the holder 4, the spring 107 energizes the cartridge moving plate 5 to move in backward direction in the direction opposite to the arrow A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc loading device for loading a recording disc serving as a recording medium to a recording and / or reproducing device such as a disc player device.

[0002]

2. Description of the Related Art Conventionally, there have been proposed recording disks such as so-called optical disks and magneto-optical disks which serve as recording media for information signals. A recording and / or reproducing device such as a disc player device for recording and / or reproducing an information signal on such a recording disc has been proposed. It has a disk loading device for loading and mounting.

This disc loading device has a disc holder for holding the recording disc inserted and operated from the front side. When the recording disk is housed in a cartridge to form a disk cartridge, this disk holder is configured as a cartridge holder for holding the cartridge. That is, the cartridge holder is configured into a housing having a size substantially corresponding to the cartridge, and at least the lower surface portion and the front surface portion are open. In this cartridge holder, a front surface portion is a side on which the disc cartridge is inserted and operated, and a lower surface portion exposes the disc cartridge to a recording and / or reproducing portion including an optical pickup device of the recording and / or reproducing apparatus. It is made with the side.

The disc loading device is configured to move the cartridge holder horizontally and vertically within the recording and / or reproducing device. That is, in this disc loading device, the cartridge holder is inserted and taken out of the disc cartridge at a position where the cartridge holder is raised and located on the front side. When the disc cartridge is inserted and operated, the cartridge holder is moved rearward while maintaining the height position, and reaches the position above the recording and / or reproducing unit. Next, the cartridge holder is operated to be lowered to mount the held disk cartridge on the recording and / or reproducing unit.

That is, in this disc loading apparatus, the cartridge holder is supported by the guide grooves provided on the side wall portions on both sides and moved along the guide grooves. The guide groove is formed in an L-shape having a horizontal portion and a vertical portion bent downward from the rear end portion of the horizontal portion.

[0006]

By the way, in the disk loading apparatus having the cartridge holder as described above, the size which can hold the disk cartridge in the recording and / or reproducing apparatus. Since it is necessary to secure a space for moving and operating the cartridge holder configured as described above, it is impossible to downsize the recording and / or reproducing apparatus.

Further, in this disc loading device, when performing an eject operation for ejecting the disc cartridge from the recording and / or reproducing device,
It is difficult to construct this disc cartridge so that it can be pushed sufficiently outward from the recording and / or reproducing apparatus.

That is, in this disc loading device, the cartridge holder is used for recording and / or recording.
Alternatively, since the disc cartridge is moved within the reproducing apparatus, the disc cartridge must be sufficiently ejected from the cartridge holder in order to be sufficiently ejected to the outside of the recording and / or reproducing apparatus. There is. However, if the disc cartridge is to be ejected from the cartridge holder, the disc cartridge may not be held, and may drop off from the recording and / or reproducing apparatus and fall. In order to allow the disc cartridge, which is still held by the cartridge holder, to be sufficiently ejected to the outside of the recording and / or reproducing apparatus, it is necessary to shorten the front-rear length of the cartridge holder. However, shortening the front-rear length of the cartridge holder makes the holding of the disc cartridge in the recording and / or reproducing apparatus unstable, and may prevent the recording and / or reproducing unit from being mounted properly. is there.

Further, the disc loading device is provided with a member or a mechanism for preventing so-called erroneous insertion of the disc cartridge. The erroneous insertion of the disc cartridge means that the lower main surface portion provided with an opening for rotating the recording disc is inserted as the upper side, or the side surface portion or rear portion of the cartridge is inserted. That is, the face part is inserted without being the front side.

The member for preventing the erroneous insertion utilizes the asymmetry of the shape of the cartridge, but there is a dimensional variation due to the processing error of the cartridge and the assembly processing error of the disk loading device. Incorrect insertion is not reliably prevented. Further, in this disc loading device, if the disc cartridge is forcibly inserted at the time of erroneous insertion, the disc cartridge and the disc loading device may be damaged.

Therefore, the present invention has been proposed in view of the above-mentioned circumstances, and the recording and / or reproducing apparatus can be reliably mounted on the recording disk, and at the time of the ejecting operation, the recording disk is stable. It is an object of the present invention to provide a disc loading device which can be sufficiently ejected from the recording and / or reproducing device and can surely prevent erroneous insertion.

[0012]

In order to solve the above-mentioned problems and achieve the above-mentioned object, a disk loading apparatus according to the present invention first holds a disk cartridge that has been inserted and operated so as to be movable in the insertion operation direction. Cartridge holder, a second cartridge holder movably supported with respect to the first cartridge holder in the insertion operation direction, and engaging with a disk cartridge inserted into the first cartridge holder, and one end side A compression spring member in which the second cartridge holder is engaged with the first cartridge holder and the other end side is engaged with the second cartridge holder, the compression spring member is configured such that the second cartridge holder is the first cartridge holder. When the second cartridge holder is located substantially forward of the center position with respect to, the second cartridge holder is urged to move forward. When the second of the cartridge holder is positioned on the rear side of the substantially central position relative to the first cartridge holder is made of a second of the cartridge holder to move urged rearward.

Further, according to the present invention, in the above-mentioned disc loading device, an engaging member provided in the second cartridge holder, which is movable in a direction substantially orthogonal to the inserting operation direction of the disc cartridge, and The engaging member is moved and urged inward of the first cartridge holder so as not to be in the initial position, and when the disc cartridge is inserted into the first cartridge holder, the engaging member is moved to the initial position of the disc cartridge. An urging member that engages with an engaged concave portion provided on one main surface side to reach the initial position, and the engaging member is displaced to the outside of the first cartridge holder from the initial position. When the second cartridge holder is moved relative to the first cartridge holder, the second cartridge holder comes into contact with the engagement member and the second cartridge holder Is obtained by the fact that a stopper member for preventing the movement with respect to 1 of the cartridge holder.

[0014]

In the disc loading apparatus according to the present invention, the first cartridge for movably holding the disc cartridge is provided.
The compression spring member having one end engaged with the cartridge holder, and the other end engaged with the second cartridge holder that is movably supported by the first cartridge holder and engages with the disc cartridge is When the cartridge holder of the second cartridge holder is positioned in front of the center position with respect to the first cartridge holder, the second cartridge holder is urged to move to the front side, and the second cartridge holder is moved to the first cartridge holder. When the cartridge holder is located rearward of the center position, the second
The second cartridge holder is surely positioned at either the front side position or the rear side position because the cartridge holder is urged to move rearward.

Further, in the above-mentioned disc loading device, an engaging member provided on the second cartridge holder so as to be movable in a direction substantially orthogonal to the inserting operation direction of the disc cartridge, and this engaging member. When the disc cartridge is inserted into the first cartridge holder, the engaging member is attached to the one main surface side of the disc cartridge when the disc cartridge is inserted into the first cartridge holder. An urging member that engages with the engaged recess provided in the first cartridge holder to reach the initial position, and when the engaging member is displaced to the outside of the first cartridge holder from the initial position, When the second cartridge holder is moved and operated with respect to the first cartridge holder, the second cartridge holder comes into contact with the engagement member and the first cartridge of the second cartridge holder. When provided with a stopper member for preventing movement against Rijjihoruda is by the stopper member, the said second cartridge holder when erroneous insertion of the disc cartridge is moved can be prevented.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. This example is an example in which the present invention is applied to a disc loading device which constitutes a disc player device which is a recording and / or reproducing device for reproducing information signals from a so-called magneto-optical disc or a so-called optical disc.

The following description will be given in the following order. [1] Configuration of disc cartridge [2] Configuration of disc loading device (2-1) Configuration of main frame and mechanical chassis (2-2) Configuration of cartridge holder (2-3) Configuration of movement operation mechanism [3] Disc Operation of Loading Device (3-1) Initial State (3-2) Disk Cartridge Insertion Operation (3-3) Disk Cartridge Loading Operation (3-4) Disk Cartridge Chucking Operation (3-5) Disk Cartridge Operation Chucking Release Operation (3-6) Disk Cartridge Ejecting Operation [4] Other Embodiments

[1] Configuration of Disc Cartridge The magneto-optical disc used as a recording medium for information signals in this disc player device has a diameter of, for example, 64.
A signal recording layer made of a magnetic material is adhered and formed on a disk substrate made of a transparent synthetic resin material such as polycarbonate having a thickness of about mm. This signal recording layer is locally heated to a temperature higher than the so-called Curie temperature by means such as irradiation of a focused laser beam, and an external magnetic field is applied to this heated portion to write an information signal. It The information signal written in this way is
The signal recording layer can be read by irradiating a linearly polarized light beam such as a laser beam and detecting the rotation of the polarization direction of the reflected light beam of the light beam in the signal recording layer due to the so-called Kerr effect.

The optical disc is constructed by depositing a reflective layer made of a metal material such as aluminum on a disc substrate similar to the disc substrate of the magneto-optical disc. On the disc substrate of this optical disc, fine pit rows corresponding to the information signals are formed by means such as injection molding. The information signal written on the optical disc is obtained by irradiating the pit train with a coherent light beam such as a laser beam, and detecting a change in the light amount of the reflected beam of this beam due to diffusion or interference in the signal recording layer. Can be read.

The magneto-optical disk and the optical disk are the cartridge 2 as shown in FIGS.
05 and 216 are rotatably housed to form a disk cartridge. The cartridge 205 that houses the magneto-optical disk and constitutes a recording / reproducing disk cartridge 220 comprises a thin casing having a rectangular main surface portion whose one side substantially corresponds to the diameter of the magneto-optical disk. It is configured in a shape. This cartridge 205
As shown in FIG. 22, the main surface portion on the upper surface side has a magnetic head opening 223 for exposing a part of the signal recording surface of the magneto-optical disk to the outside. Further, as shown in FIG. 24, the cartridge 205 has an optical pickup opening 222 at a position facing the magnetic head opening 223 on the main surface on the lower surface side. Each has a chucking opening 213 in the central portion. This recording / reproducing disc cartridge 220 is similar to the disc player device shown in FIG.
And, as indicated by an arrow C in FIG. 24, it is inserted and attached in the forward direction.

In the cartridge 205 of the recording / reproducing disk cartridge 220, the magnetic head opening 223 and the optical pickup opening 22 are provided.
The shutter 2 can be opened and closed by the shutter member 206. The shutter member 206 has openings 22
3 and 222, which have shutter plate portions facing each other in parallel with each other and connecting portions which connect one end sides of these shutter plate portions to each other, and are integrally formed of a synthetic resin material or a metal material. Has been done. This shutter member 206
Is slidably supported by the support groove 207 formed on one side of the cartridge 205, as indicated by an arrow Z in FIGS. 22 and 24. That is, the shutter member 206 functions as the cartridge 20.
5 is slid backward along one side to open the openings 223 and 222, and when slid forward from the rear side to return to the initial position, the shutter plate portions are closed. The openings 223 and 222 are closed.

The cartridge 216, which constitutes the read-only disc cartridge 221, in which the optical disc is housed, is in the form of a thin casing having a rectangular main surface portion whose one side substantially corresponds to the diameter of the optical disc. It is configured. As shown in FIG. 23, this cartridge 216 does not have an opening in the main surface portion on the upper surface side. As shown in FIG. 25, this cartridge 216 has an opening 222 for an optical pickup on the main surface portion on the lower surface side, and a chucking opening 213 at a substantially central portion of the main surface portion on the lower surface side. There is. This reproduction-only disc cartridge 221 is different from the disc player device shown in FIG.
As shown by 3 and arrow C in FIG. 25, it is inserted and attached in the forward direction.

The reproduction-only disc cartridge 221.
In the cartridge 216, the optical pickup opening 222 can be opened and closed by a shutter member 217. The shutter member 217 has a shutter plate portion corresponding to the optical pickup opening 222 and a support portion provided on one end side of the shutter plate portion, and is integrally made of a synthetic resin material or a metal material. Is configured. The shutter member 217 is slidably supported by the support portion in a support groove portion 207 formed on one side of the cartridge 216, as indicated by an arrow Z in FIGS. 23 and 25. That is, the shutter member 217 slides backward along one side of the cartridge 216 to open the optical pickup opening 222, and slides forward from the rear side to return to the initial position. Then, the shutter plate section closes the optical pickup opening section 222.

The shutter members 206 and 217 have
A shutter closing hole 208 is provided at a substantially central position of the connecting portion or the supporting portion, facing the side. The shutter closing hole 208 is for engagement with a member for closing the shutter members 206 and 217 in the disc player device.

A circular chucking hole 204 is formed at the center of the magneto-optical disc and the optical disc. The chucking hole 204 is closed by a chucking plate 202 from the upper surface side. This chucking plate 202 is made of iron or stainless steel,
The chucking hole 20 is made of a magnetic metal material.
4 is formed in a disk shape having a diameter substantially corresponding to 4. These chucking holes 204 and chucking plate 20
2 faces the outside of each of the cartridges 205 and 216 through the chucking opening 213.

Then, the cartridges 205, 21 described above
A pair of front side and rear side positioning holes 209 and 210 are formed in the lower main surface portion of 6. The front side positioning hole 209 has the optical pickup opening 222.
Is located in the vicinity of the edge of the main surface portion on the front side, and is formed in an oval shape with the major axis direction being the front-rear direction. Also,
The rear-side positioning hole 210 is located in the vicinity of the edge of the rear-side main surface portion of the optical pickup opening 222, and is formed in a circular shape.

Further, the cartridges 205 and 216 described above
A plurality of identification holes 224 are formed in the vicinity of the edge on the other side of the lower main surface portion on the rear side. These identification holes 224
Is for identifying the type and state of the disks housed in these cartridges 205 and 216, for example, whether or not information signals can be recorded. In the cartridge 205 of the recording / reproducing disc cartridge 220, a save notch 214 is provided on the rear side surface portion corresponding to the identification hole 224. This save notch 21
4 is moved and operated to identify the identification hole 224.
One of the two is moved back and forth, the depth of the identification hole 224 is changed, and the identification state of whether or not the information signal can be recorded is switched.

Further, each of these cartridges 205, 2
A pair of engaged recesses 212, 212 are formed at the edges on both sides of the front side of the lower main surface portion of 16. An insertion guide groove 225 is formed on the other side of the cartridge 205, 216 so as to face the support groove 207.

In the cartridge 205 of the recording / reproducing disc cartridge 220, a magneto-optical disc identifying concave portion 211 is formed at the front side edge portion of the lower main surface portion. In addition, the reproduction-only disc cartridge 2
In the No. 21 cartridge 216, an optical disk disc identification concave portion 218 is formed at the front side edge portion of the lower main surface portion. The magneto-optical disc identifying concave portion 211 and the optical disc identifying concave portion 218 are different from each other in depth from the lower main surface portion. Due to the difference in depth, whether the accommodated disc is the magneto-optical disc or the optical disc. It is designed to be able to identify.

[2] Configuration of Disc Loading Device (2-1) Configuration of Main Frame and Mechanical Chassis The disc loading device according to the present invention is configured to have a main frame 2 as shown in FIGS. 1 and 2. To be done. The main frame 2 is integrally formed of a material such as a metal plate, and has a bottom plate portion and a pair of left and right side wall portions 37 and 38 that are bent from both sides of the bottom plate portion and vertically installed. ing. A top plate 3 is attached to the main frame 2 so as to extend between the upper edge portions of the side wall portions 37 and 38. The top plate 3 is formed in a substantially flat plate shape and has screw holes 123, 123, 123, 123 at each corner. The top plate 3 has the screw holes 123, 12
Set screw 12 inserted corresponding to 3,123,123
2, 122, 122, 122 are the side wall portions 37, 38 described above.
Screwing pieces 39, 40, 41 provided on the upper edge of the
It is attached to the main frame 2 by being screwed into the screw hole of 42. Each of the above-mentioned screw fastening pieces 39, 4
0, 41, 42 are formed by bending the protrusions provided on the upper edge portions of the side wall portions 37, 38 so as to be substantially horizontal on the inner sides facing each other.

The mechanical chassis 1 is arranged between the side wall portions 37 and 38 of the main frame 2.
The mechanical chassis 1 is formed in a substantially flat plate shape, and has a pair of front and rear support shafts 15 and 16 protruding laterally at the left side edge portion.
And a support shaft 17 projecting laterally is provided substantially at the center of the right side edge. Dampers 18, 19 and 20 which are vibration absorbing members are externally fitted to the support shafts 15, 16 and 17, respectively. These damper members 18, 19, 20
Is made of a flexible material such as butyl rubber and has a substantially cylindrical shape. These damper members 18, 1
The reference numerals 9 and 20 are fitted to the cutout portions 34, 35 and 36 formed in the side wall portions 37 and 38, respectively. These cutouts 34, 35, 36 are open to the upper side, and the tongue piece 12 hangs down from both side edges of the top plate 3.
The upper side is closed by 5, 125 and 125, respectively. That is, the damper members 18, 19, 20 described above
Is the inner edge of each of the cutouts 34, 35, 36 and the lower end of each of the tongues 125, 125, 125,
The outer peripheral surface is held. The mechanical chassis 1 is so-called floating-supported with respect to the main frame 2 via the damper members 18, 19, 20. The mechanical chassis 1 is so-called floating-supported so that vibrations and shocks transmitted from the outside to the main frame 2 are not transmitted.

On the mechanical chassis 1, there is provided a reproducing section for reading information signals from the magneto-optical disc or the optical disc. This reproducing section is configured to have a disc table 12 and an optical pickup device 13.

The disk table 12 is mounted on a drive shaft of the spindle motor mounted on the lower surface of the mechanical chassis 1 and protruding toward the upper surface of the mechanical chassis 1. The disc table 12 is formed in a substantially disc shape, and the chucking opening 213 is formed.
The cartridge 205, 216 can be inserted into the cartridge 205, 216 through the disk to be fitted into the chucking hole 204 of the disk. This disk table 12 is
When fitted into the chucking hole 204, the disc is positioned and held.

The optical pickup device 13 includes a light source such as a semiconductor laser, an optical device for guiding a light beam emitted from the light source and condensing the light beam on the disk, and a light beam for detecting a light beam reflected from the disk. An information signal is read from the disk held on the disk table 12 by including a detector and the like.
The optical pickup device 13 is the mechanical chassis 1 described above.
The upper part can be moved and operated in the contact and separation directions with respect to the disk table 12.

On the mechanical chassis 1, a pair of positioning pins 8 and 9 and a pair of height determining protrusions 10 and 11 are provided.
Is projected. Each of the positioning pins 8 and 9 is a pin whose upper end side has a tapered diameter, and is fitted into the cartridge 205 or 216 in correspondence with the front and rear positioning holes 209 and 210, respectively. Two
The positioning of 05 and 216 with respect to the mechanical chassis 1 is performed. The height determining protrusions 10 and 11 contact the lower end portions of the cartridges 205 and 216 at their tip ends to determine the height positions of the cartridges 205 and 216 with respect to the mechanical chassis 1.

In the recording / reproducing section, the cartridges 205 and 216 are positioned by the positioning pins 8 and 9 and the height determining projections 10 and 11, and the magneto-optical disk or the optical disk is placed on the disk table 12. The disks are retained and the disks are rotated within the cartridge 205,216. Then, the optical pickup device 13 reads out an information signal from the disk which is rotationally operated in the cartridges 205 and 216.

(2-2) Structure of Cartridge Holder On the upper side of the mechanical chassis 1, a cartridge holder 4 serving as a first cartridge holder is arranged.
The cartridge holder 4 includes the cartridge 20.
5, 216 are formed in a substantially flat plate shape corresponding to the sizes of the main surface portions, and are supported by the mechanical chassis 1 via a rotating frame 7. This rotating frame 7
With a material such as a metal plate, a pair of parallel arm portions 58,
It has a substantially U-shaped configuration including a rear plate portion 60 for connecting the rear end portions of the arm portions 58, 59 to each other, and is integrally bent. The arm portions 58 and 59 are
A pair of rotary support shafts 24, each of which has a substantially midway portion, are provided on both rear sides of the mechanical chassis 1 so as to project laterally,
Correspondingly rotatably supported by 25. The support recesses 54, 55 are provided on the front end sides of the arm parts 58, 59.
Are formed. Support protrusions 98 and 99, which are provided at the centers of both side portions of the cartridge holder 4 so as to project laterally, are fitted into the support recesses 54 and 55, respectively. That is, the rotating frame 7 is rotated around the support shafts 24 and 25 to move and move the cartridge holder 4 in the vertical direction in which the cartridge holder 4 comes in contact with and separates from the mechanical chassis 1.

The rotating frame 7 includes the arm portions 5
Corresponding tensions are provided between the spring hooking portions 50, 51 formed on the front end side of 8, 59 and the spring hooking pieces 23, 23 provided at the substantial center of the side portion of the mechanical chassis 1. As shown by an arrow F in FIG. 1, the pair of tension coil springs 52, 53 mounted on the cartridge holder 4 urges the cartridge holder 4 to move downward so as to approach the mechanical chassis 1.

On both sides of the mechanical chassis 1,
A pair of lock arms 44, 44 are rotatably attached to the front sides of the front ends of the arm portions 58, 59 of the rotating frame 7. That is, the lock arms 44, 44 have support holes 45, 45 at substantially the center thereof, and a pair of support holes 45, 45 projecting laterally from both sides of the mechanical chassis 1 are provided in the support holes 45, 45. Support shafts 21, 22
Is inserted. These lock arms 44, 44 are
The rear end side has engaging grooves 46, 46, and the engaging groove 4
6, 46 are support projections 98 of the cartridge holder 4,
99 is engaged. And these lock arms 4
The front end sides of 4, 44 are contact parts for contacting the main frame 2.

In this disc loading device, as shown by an arrow P in FIG. 6, the rotating frame 7 causes the cartridge holder 4 to move to the mechanical chassis 1.
When the cartridge holder 4 is moved in the direction of further separating, as shown in FIG. 6, the cartridge holder 4 contacts the top plate 3,
The abutting portions of the lock arms 44, 44 abut the bottom surface of the main frame 2, and the rotating frame 7
The contact portion 151 at the lower edge portion of the rear plate portion 60 is brought into contact with the contact support portion 43 provided on the rear edge side of the bottom surface portion of the main frame 2. At this time, the mechanical chassis 1 is prevented from moving with respect to the main frame 2 due to deformation of the damper members 18, 19, 20.

In this disc loading device, as shown by the arrow S in FIG. 7, when the rotating frame 7 moves the cartridge holder 4 in the direction of approaching the mechanical chassis 1, the result shown in FIG. As shown, the cartridge holder 4 is separated from the top plate 3, the abutting portions of the lock arms 44 and 44 are separated from the bottom surface portion of the main frame 2, and the abutment portion of the rotating frame 7 is further separated. The contact part 151 is separated from the contact support part 43. At this time, the mechanical chassis 1 can move with respect to the main frame 2 due to the deformation of the damper members 18, 19, 20.

Both side portions of the cartridge holder 4 are bent downward in a hook shape to form cartridge holding portions 89 and 90. As shown by the arrow C in FIG. 1, when the disc cartridges 220 and 221 are inserted into the cartridge holding portions 89 and 90 from the front side, the cartridge holding portions 89 and 90 are inserted into the cartridge holding portions 89 and 90. Hold both sides of the. At this time, the disc cartridge 220,
The cartridge 221 is held so as to be movable in the front-rear direction with respect to the cartridge holder 4.

The cartridge holder 4 includes a top plate portion of the cartridge holder 4 and the disc cartridge 2
When the disc cartridges 220 and 221 are inserted to a position where the main surface portions of the discs 20 and 221 overlap with each other and moved to the mechanical chassis 1 side by the rotating frame 7, the disc cartridges 220 and 221 are moved to the mechanical chassis 1. Attach it to the playback unit above 1. The cartridge holder 4 has pressing protrusions 94, 95, 96, 97 protruding downward at the four corners of the top plate. The cartridge holder 4 includes the pressing protrusions 94, 95,
96, 97 are brought into contact with the four corners of the cartridges 205, 216, and the pair of tension coil springs 52, 5
By the urging force of 3, the disk cartridge 220,
221 is pressed and supported on the mechanical chassis 1 side.

Further, the cartridge holder 4 is provided with a mechanism for opening and closing the shutter members 206 and 217 of the disk cartridges 220 and 221. That is, in the cartridge holding portion 90, the shutter opening claw 105 is provided so as to protrude inward. When the disc cartridges 220 and 221 are inserted into the cartridge holder 4, the shutter opening claw 105 enters the support groove portion 207 from the front end side of the cartridges 205 and 216, and the shutter member 206. , 217 to abut on the front end portions of the disk cartridge 2 to stop the movement of the shutter members 206, 217 with respect to the cartridge holder 4.
The shutter members 206, 2
Open 17

On the outer side surface of the cartridge holder 4, a shutter closing spring 100 is provided with a locking screw 10.
It is attached by 4, 104. This shutter closing spring 100 has the cartridge holder 4 on one end side.
The engaging portion 102 is curved inward. The engagement portion 102 enters the inside of the cartridge holder 4 through the opening 103 provided on the side portion of the cartridge holder 4. The engagement portion 102 is provided on the cartridge holder 4 with the disc cartridge 22.
When 0, 221 is inserted and operated, the shutter member 20
The shutter closing holes 208 of Nos. 6 and 217 are fitted and engaged. This engaging portion 102 is the disc cartridge 2
When 20 and 221 are ejected to the front side of the cartridge holder 4, the movement of the shutter members 206 and 217 with respect to the cartridge holder 4 is stopped, so that the shutter members are ejected as the disc cartridges 220 and 221 are ejected. 206 and 217 are closed.

A cartridge moving plate 5 constituting a second cartridge holder is attached to the lower surface of the cartridge holder 4 so as to be movable in the front-rear direction. That is, the cartridge moving plate 5 is formed in a horizontally long, substantially flat plate shape having a width substantially the same as the width of the cartridge holder 4, and the engaging pins 108, 10 are provided on the upper surface thereof.
It has 9,110. This cartridge moving plate 5
Is a pair of engaging slits 9 formed on the cartridge holder 4 and engaging pins 108, 109, 110.
The cartridge holder 4 is inserted and engaged with the cartridge holders 1 and 92, and is supported so as to be movable in the front-rear direction with respect to the cartridge holder 4. The pair of engagement slits 91, 92 are formed in parallel with each other and are formed in the front-rear direction. One engagement pin 91 is inserted through one engagement slit 91 and the other engagement slit 92 is formed. Two engaging pins 109,
110 is inserted and engaged. This cartridge moving plate 5
When the disc cartridges 220 and 221 are inserted into the cartridge holder 4, the top plate portion of the cartridge holder 4 and the disc cartridge 22 are inserted.
It will be located between 0 and 221.

The rear edge side portion of the cartridge moving plate 5 is bent downward to form a rear wall portion 139, and further bent rearward in a hook shape to be engaged groove portion 111.
Is formed. The rear wall portion 139 is formed on the cartridge holder 4 by the disc cartridges 220 and 221.
When the disc is inserted, the disc cartridge 22
The front ends of the disk cartridges 220 and 221 are brought into contact with each other to position the disk cartridges 220 and 221. The engaged groove portion 111 has a loading arm 8 to be described later.
The engaging portion 87 of No. 3 is a portion which is inserted and engaged so that it can be brought into contact with and separated from the engaging portion 87.

A torsion spring 107, which is a compression spring member, is provided in engagement with the cartridge moving plate 5 and the cartridge holder 4. That is,
The torsion spring 107 has one arm portion which is provided on the upper surface portion of the cartridge holder 4 so as to project near the substantially central portion of the engaging slit 92.
The other arm portion is hooked on a spring hooking piece 144 protruding from the upper surface of the cartridge moving plate 5 and protruding upward through the engaging slit 92. The torsion coil spring 107 has an elastic force in the direction of separating the spring retaining pieces 93, 144 from each other. Therefore, the torsion coil spring 107
Means that the cartridge moving plate 5 is connected to the spring retaining pieces 9
When the cartridge holder 4 is located on the front side of the center of the cartridge holder 4 which is the closest to the cartridge holder 4, as shown by an arrow A in FIG. 1 and FIG. It urges it to move forward. When the cartridge moving plate 5 is located rearward of substantially the center of the cartridge holder 4, as shown by an arrow B in FIG. 1 and FIG. The cartridge moving plate 5 is urged to move rearward.

On the lower surface side of the cartridge moving plate 5,
As shown in FIGS. 1 and 18, the hold plate 6 is rotatable with respect to the cartridge moving plate 5 and constitutes the second cartridge holder and serves as an engaging member.
Is attached. The hold plate 6 is formed in a substantially flat plate shape having substantially the same size as that of the cartridge moving plate 5, and its rear edge side portion is connected to the rear edge side portion of the cartridge moving plate via 118 and 121. And is rotatably supported. In the initial state, the holding plate 6 is separated from the cartridge moving plate 5 by a distance corresponding to the thickness of the disk cartridges 220 and 221, and as shown in FIGS. Disk cartridge 220, 2
When 21 is inserted, the disk cartridges 220 and 221 are positioned below the disk cartridges 220 and 221. The hold plate 6 is rotatable in a downward direction so as to be separated from the cartridge moving plate 5, and the torsion coil spring 115 serving as an urging member allows the hold plate 6 to be indicated by an arrow D in FIG.
As shown in FIG. 5, the cartridge moving plate 5 is rotationally biased in a direction approaching the cartridge moving plate 5 to be positioned at the initial position.

The hold plate 6 has a pair of holding protrusions 117, 117 formed on the upper surface of both end portions.
When the disc cartridges 220 and 221 are inserted into the holding plate 6 and the holding projections 117 and 117, as shown in FIG.
05, 216 are fitted into and engaged with a pair of engaged recesses 212, 212 formed in the lower main surface portion. Hold plate 6
As described above, when the holding protrusions 117, 117 are fitted into the engaged recesses 212, 212, they are returned to the initial position, and hold the disc cartridges 220, 221. There is.

The cartridge moving plate 5 and the holding plate 6 are located on the front side of the cartridge holder 4, and the disc cartridges 220 and 22 are provided.
By holding 1 and moving to the rear side of the cartridge holder 4, the held disk cartridges 220 and 221 are carried into the cartridge holder 4, that is, at a position on the mechanical chassis 1. Further, the cartridge moving plate 5 and the hold plate 6
Is moved to the front side of the cartridge holder 4 while holding the disc cartridges 220 and 221 on the rear side of the cartridge holder 4, so that the disc cartridges 220 and 221 are moved from the cartridge holder 4 by Discharge.

The hold plate 6 is provided with an erroneous insertion preventing claw 119 located rearward of the support shaft 118. The rear insertion blocking claw 119 is a contact portion 140 having an acute-angled corner on the upper edge side of the rear end portion. The contact portion 140 is formed in the top plate portion of the cartridge holder 4 when the cartridge moving plate 5 is located on the front side of the cartridge holder 4.
The position corresponding to 06 is set. When the hold plate 6 is in the initial position, the erroneous insertion preventing claw 119 does not contact the top plate portion of the cartridge holder 4 as shown by an arrow W in FIG. It can pass below 106.

The erroneous insertion preventing claw 119 is shown in FIG.
As shown in FIG. 1, when the hold plate 6 is rotated downward as shown by an arrow U in FIG. 21 due to so-called erroneous insertion of the disk cartridges 220 and 221, the contact portion 140 is moved. The contact hole 106 is made to enter. In this way, when the abutting portion 140 enters the abutting through hole 106, even if the cartridge moving plate 5 is moved rearward, the abutting portion 140 serves as a stopper member. The cartridge moving plate 5 is not moved to the rear side because it abuts on the rear edge of the contact hole 106.

The disc cartridge 220,
As shown in FIG. 21, the erroneous insertion of the 221 means that the lower main surface portion provided with the engaged recesses 212, 212 is inserted as the upper side, or the cartridge 205, 221 is inserted. That is, the side surface portion and the rear surface portion of 216 are inserted without being the front side.

(2-3) Structure of moving operation mechanism Then, at the rear side portion of the mechanical chassis 1, the disk cartridges 220, 221 are carried into the mechanical chassis 1 and the disk cartridges 220, 2 are carried.
There is provided a movement operation mechanism for discharging 21 of the mechanical chassis 1, that is, for moving the cartridge moving plate 5.

This moving operation mechanism is shown in FIGS. 1, 2 and 8
As shown in FIG. 3, the mechanical chassis 1 has a motor 64 arranged at the rear portion thereof. This motor 64
A worm gear 65 is attached to the drive shaft of. The worm gear 65 meshes with a worm wheel 69 that is rotatably supported by the support shaft 30 that is planted in the mechanical chassis 1. This worm wheel 6
A first transmission gear 70, which is a spur gear, is coaxially and integrally formed on the shaft 9. The first transmission gear 70 meshes with a second transmission gear 71, which is a flat gear rotatably supported by a support shaft 29 embedded in the mechanical chassis 1.

As shown in FIG. 17, a base end side portion of a rotating arm 136 is rotatably attached to the support shaft 29 which supports the second transmission gear 71. That is, in the rotating arm 136, the support shaft 29 is inserted into the support hole 138 provided on the base end side. A friction member 137 is disposed between the rotating arm 136 and the second transmission gear 71. That is, the rotation arm 136 is rotated in a direction that follows the rotation direction of the second transmission gear 71. The second transmission gear 7
1 rotates in one direction shown by an arrow X ₁ in FIGS. 8 and 17, the rotating arm 136 moves the arrow X in FIGS.
It is rotated in one direction shown by ₂ . When the second transmission gear 71 rotates in the other direction indicated by the arrow Y ₁ in FIGS. 8 and 17, the rotating arm 136 rotates in the other direction indicated by the arrow Y ₂ in FIGS. 8 and 17. Be moved.

A third transmission gear 72 is rotatably attached to the tip end side of the rotating arm 136 via a support shaft 73. The third transmission gear 72 meshes with the second transmission gear 71.

A cam gear 61, which serves as a loading motion transmission member, is rotatably mounted on the mechanical chassis 1 via a support shaft 27 that is planted in the mechanical chassis 1. As shown in FIG. 14, the cam gear 61 is integrally formed with a gear portion 127 and a flange portion 131 which are coaxial with a support hole 129 into which the support shaft 27 is fitted. The gear portion 127 has a first toothless portion 130 extending over a predetermined angle range.
Further, the flange portion 131 has a defective portion extending over a predetermined angle range. A first engagement groove portion 128 serving as a first engagement portion is formed on a lower surface portion of the flange portion 131 facing the gear portion 127. This first engaging groove portion 1
28 is formed in an arc shape around the support hole 129, one side portion of the defective portion is opened toward the defective portion, and the other side portion of the defective portion is a closed end.

The gear portion 127 of the cam gear 61 is provided with a fourth shaft through a support shaft 28 which is planted in the cam chassis 1.
The transmission gear 63 of is meshed. This fourth transmission gear 6
The third transmission gear 72 meshes with the third transmission gear 136 when the rotation arm 136 is rotated in the other direction indicated by the arrow Y ₂ in FIGS. 8 to 13. When the third transmission gear 72 is in mesh with the fourth transmission gear 63, the third transmission gear 72 is inserted into the first engagement groove portion 128 as shown in FIGS. 8 to 10. The tip side of the support shaft 73 supporting the gear 72 is engaged.

The cam gear 61 has the support shaft 73 engaged with the first engagement groove portion 128 by a torsion coil spring (not shown) as shown by an arrow G in FIGS. 1, 2 and 8. The first engaging groove portion 128 is rotationally biased in a direction in which the first engaging groove portion 128 comes out from the open end portion to the above-mentioned defective portion.

The cam gear 61 has a main surface portion on the upper surface side,
An operation pin 62 is provided. This operation pin 62 is
A cam slit 81 provided on a fan-shaped plate 79, which is a first arm member rotatably supported on the mechanical chassis 1, is inserted and engaged. The fan-shaped plate 79 has a support hole 80 at a position corresponding to the corner of the fan.
Further, the support shaft portion 26 on the tip end side of the support column 20 that is planted on the mechanical chassis 1 is inserted therethrough and is rotatably supported. The cam slit 81 is formed substantially linearly from the vicinity of the support hole 80 to the vicinity of the peripheral edge of the fan. Further, the fan-shaped plate 79 has a guide slit 82. The guide slit 82 is formed in an arc shape around the support hole 80. The fan-shaped plate 79 is rotated by the rotation of the cam gear 61 via the operation pin 62.

A base end of a loading arm 83, which is a second arm member, is rotatably attached to the support shaft portion 26. A support hole 8 into which the support shaft portion 26 is inserted and engaged is provided on the base end side of the loading arm 83.
4 are formed. The guide slit 82 of the fan-shaped plate 79 is provided in the middle of the loading arm 83.
A guide pin 86 that is inserted into and engaged with is provided. The loading arm 83 is rotatable with respect to the fan-shaped plate 79 within the angular range of the guide slit 82 around the support hole 80. At the tip end side of the loading arm 83, an engaging portion 87 that is insertably engaged with the engaged groove portion 111 so as to be able to come into contact with and disengage from is provided. The loading arm 83 is provided with a limiter spring 88, which is a torsion coil spring in which each arm portion is hooked on the loading arm 83 and the fan-shaped plate 79, as shown by an arrow F in FIGS. 1 and 2. The engagement portion 87 is urged to rotate toward the front side with respect to the fan-shaped plate 79.

On the base end side of the loading arm 83, a switch operation projection 85 for operating the first detection switch 77 arranged on the mechanical chassis 1 is provided. The switch operation protrusion 85 is provided when the loading arm 83 is rotated in a direction forming the engaging portion 87 with the rear side as shown by an arrow J in FIG. 3 and an arrow L in FIG. The first detection switch 77 is operated.

A slider 74, which serves as a chucking motion transmitting member, is arranged on the mechanical chassis 1. As shown in FIGS. 15 and 16, the slider 74 is formed as a substantially rod-shaped member and has a pair of support slits 75 and 76. This slider 74
Can be moved laterally by inserting and engaging the pair of support shafts 31 and 32 planted on the mechanical chassis 1 into the support slits 75 and 76, respectively. In this slider 74, the rotary arm 136 is shown in FIGS.
3 has a rack gear portion 134 with which the third transmission gear 72 meshes when rotated in one direction shown by the middle arrow X ₂ . Further, the slider 74 has a second toothless portion 135 on the extension of the rack gear portion 134.
Further, the slider 74 has the rack gear portion 134.
A second engaging groove portion 1 serving as a second engaging portion is provided on a lower surface portion of the eave portion which faces the rack gear portion 134.
33 is formed. The second engagement groove portion 133 is
It is formed in a straight line parallel to the rack gear portion 134, one side facing the cam gear 61 is open, and the other side is a closed end.

When the third transmission gear 72 is in mesh with the rack gear portion 134, the second transmission groove 72 is provided in the second engagement groove portion 133 as shown in FIGS. 11 to 13. The tip side of the support shaft 73 supporting the gear 72 is engaged.

The slider 74 is constructed by a tension coil spring 126 stretched between a spring retaining portion 132 provided on the slider 74 and a spring retaining portion 33 projecting on the mechanical chassis 1. 1, as shown by the arrow H in FIGS. 2 and 8, the support shaft 73 engaged with the second engaging groove portion 133 is pulled out from the open end of the second engaging groove portion 133. In other words, the rack gear portion 134 is urged to move toward the second toothless portion 135 side.

The rear surface portion of the slider 74 is opposed to the front surface portion of the rear plate portion 60 of the rotating frame 7. A pair of horizontal cam projections 1 are formed on the rear surface of the slider 74.
45 and 146 are provided. These cam projections 14
In the initial state in which the slider 74 is moved by the urging force of the tension coil spring 126, the reference numerals 5 and 146 are arranged above the pair of copying pins 56 and 57 that are planted in the front surface of the rear plate portion 60. These copying pins 56, 57
Is pushed down. That is, the slider 7
In the initial position, as indicated by an arrow O in FIG. 6, 4 rotates the rotating frame 7 in a direction in which the rear plate portion 60 moves to the mechanical chassis 1 side.

As shown by the arrow N in FIG. 5, the cam projections 145, 146 move in the respective directions when the slider 74 is moved to one side against the biasing force of the tension coil spring 126. While slidingly contacting the pins 56 and 57, the pins 56 and 57 are retracted from the positions above the copying pins 56 and 57. Then, the rotating frame 7 causes the rear plate portion 60 to be separated from the mechanical chassis 1 by the urging force of the pair of tension coil springs 52 and 53, as indicated by an arrow R in FIG. Is rotated in the direction of moving the mechanical chassis 1 side.

When the slider 74 is moved to one side against the urging force of the tension coil spring 126, the second detection provided on the mechanical chassis 1 is performed as shown in FIG. The switch 78 is operated by the slider 74.

When the slider 74 is moved to one side against the urging force of the tension coil spring 126, the cam projections 145, 146 cause the second toothless portion with respect to the rack gear portion 134. The end on the other side, which is the side corresponding to the side of the portion 135, is connected to
6, 57 are opposed to each other. The cam protrusions 145 and 146 have tapered ends 147 and 148 on the other side, which face downward. Therefore, when the slider 74 is moved to the other side and returned to the initial position, the cam protrusions 145, 146 are
The taper portions 147, 1 are attached to the copying pins 56, 57.
While slidingly contacting 48, they enter above the copying pins 56, 57 and move these copying pins 56, 57 downward.

[3] Operation of Disc Loading Device (3-1) Initial State In the disc loading device according to the present invention constructed as described above, in the initial state, FIG. 2, FIG. 6, FIG. 8 and FIG. As shown in 18, the cartridge holder 4 is located on the upper side and is in contact with the top plate 3. In the rotating frame 7, the contact portion 151 is in contact with the contact support portion 43. The contact portions of the lock arms 44, 44 are in contact with the contact portions 150 of the bottom surface of the main frame 2. The cartridge moving plate 5 is located on the front side of the cartridge holder 4, and is biased to the front side by the torsion coil spring 107 as shown by an arrow A in FIG. The hold plate 6 is urged upward as shown by arrow D in FIG. 18, and the distance between the hold plate 6 and the cartridge moving plate 5 is set to a distance corresponding to the thickness of the disk cartridges 220 and 221. The loading arm 83 allows the engaging portion 87 to enter the engaged groove portion 111. The fan-shaped plate 79 is rotated forward by the cam gear 61. The first and second detection switches 77 and 78 are not operated.

The cam gear 61 is rotationally biased by the torsion coil spring as shown by an arrow G in FIG.
The end of the gear portion 127 facing the first toothless portion 130 is brought into pressure contact with the fourth transmission gear 63. The support shaft 73
Engages with the first engagement groove portion 128 and meshes the third transmission gear 72 with the fourth transmission gear 63. The slider 74 is moved in the urging direction of the tension coil spring 126 shown by the arrow H in FIG.

(3-2) Operation of Inserting Disk Cartridge When the disk cartridges 220 and 221 are inserted between the cartridge moving plate 5 and the hold plate 6, as shown in FIG. Hold plate 6
20 is rotated downward, and as shown in FIG. 20, the disk cartridges 220 and 221 have their front end portions at the rear wall portion 13
When it is inserted until it comes into contact with 9, the engaged recesses 2
The holding projections 117, 117 are fitted into the 12, 212, and the hold plate 6 returns to the initial position.

Then, the disk cartridge 22
When 0, 221 are pushed rearward, the cartridge moving plate 5 is moved rearward while displacing the torsion coil spring 107, and displacing the limiter spring 88, as shown in FIG. The arm 83 is rotated. By the rotation of the loading arm 83, the first detection switch 77 is operated via the switch operation protrusion 85.

(3-3) Loading Operation of Disk Cartridge By operating the first detection switch 77,
The rotational driving of the motor 64 is started, and as shown in FIG. 9, the cam gear 61 is rotationally operated in the direction biased by the torsion coil spring as shown by an arrow X ₃ in FIG. At this time, the rotating arm 136 is rotationally biased in the direction of separating the third transmission gear 72 from the fourth transmission gear 63, as shown by an arrow X ₂ in FIG. The support shaft 73 has the first engaging groove portion 12
By engaging with 8, rotation is prevented.

The loading arm 83 is rotated rearward by the cam gear 61 via the fan-shaped plate 79 to move the cartridge moving plate 5 rearward.

In this way, the cartridge moving plate 5 is moved to the rear side, and the disc cartridge 22 is moved.
0, 221 is moved to the rear side, the shutter members 206, 217 are provided at the front end portions of the shutter opening claws 10.
5 is abutted, and the engaging portion 102 of the shutter closing spring 100 is fitted and engaged in the shutter closing hole 208. In this state, the disc cartridges 220, 22
1 is transferred to the rear side, the shutter members 206 and 217 are moved to the front end portions of the shutter opening claws 105.
Since it is stopped at the position where the abutment is made, the lid is opened.

When the cartridge moving plate 5 is moved to the rear side position of the cartridge holder 4 as shown in FIG. 4, it is moved to the rear side by the torsion coil spring 107 as shown by an arrow B in FIG. The disk cartridges 220 and 221 are moved and urged, and are positioned on the mechanical chassis 1. in this way,
The cartridge moving plate 5 is the cartridge holder 4
When the cam gear 61 is moved to the rear position of the first engagement groove portion 128, the cam gear 61 positions the open end portion of the first engagement groove portion 128 to the defective portion in the vicinity of the support shaft 73, as shown in FIG. .

When the cam gear 61 is further rotated, as shown in FIG. 11, in the rotating arm 136, the support shaft 73 reaches the defective portion of the cam gear 61 and the first engaging groove portion 128. Since it is further opened, it is rotated following the second transmission gear 71 as shown by the arrow X ₂ in FIG.
4 is engaged with the rack gear portion 134.

(3-4) Chucking Operation of Disk Cartridge The motor 64 is further rotated and driven after the cartridge moving plate 5 is moved to the rear side, and the motor 64 shown in FIGS.
As shown in FIG.
As indicated by the middle arrow X ₄ , the tension coil spring 12
Move against 6 urging force. At this time, the support shaft 7
3 is engaged with the second engagement groove portion 133 and prevents the third transmission gear 72 from being separated from the rack gear portion 134.

By the movement of the slider 74 against the biasing force of the tension coil spring 126, the cartridge holder 4 is rotated by the rotation frame 7 shown by an arrow R in FIG. As shown by the arrow S, it is separated from the top plate 3. The rotating frame 7 separates the contact portion 151 from the contact support portion 43. The lock arms 44, 44 separate the contact portion from the contact portion 150 of the main frame 2. At this time, the mechanical chassis 1 is in a float-supported state. At this time, the engaging portion 8 of the loading arm 83
7 is pulled out from the engaged groove portion 111, and the engagement between the loading arm 83 and the cartridge moving plate 5 is released.

As shown in FIGS. 13 and 5, the slider 74 has the second toothless portion 135 and the third toothless portion 135.
When it reaches a position facing the transmission gear 72, the second detection switch 78 is operated. The motor 64 is stopped by operating the second detection switch 78. The slider 74 causes the end portion of the rack gear portion 134, which faces the second toothless portion 135, by the urging force of the tension coil spring 126 to cause the third transmission gear 7 to move.
It is pressed against 2. At this time, the disc cartridges 220 and 221 held by the cartridge holder 4
Are positioned and mounted on the mechanical chassis 1, and the information signal can be read by the reproducing unit having the disc table 12 and the optical pickup device 13.

(3-5) Chucking Release Operation of Disc Cartridge As described above, the disc cartridges 220 and 22 are
When an operation for instructing an ejecting operation is performed in the state where 1 is mounted, the motor 64 is rotationally driven in the opposite direction to the above-described disk loading operation. The slider 74 includes the tension coil spring 12
Since the end portion of the rack gear portion 134 facing the second toothless portion 135 is pressed against the third transmission gear 72 by the urging force of 6, the third transmission gear 72 is rotated. This causes the rack gear portion 134 to mesh with the third transmission gear 72, and the arrow Y in FIGS.
It is moved and operated in the direction of the urging force of the tension coil spring 126 shown by ₄ . When the slider 74 is moved, the slider 74 releases the operation of the second detection switch 78. At this time, the support shaft 73 is engaged with the second engagement groove portion 133, and the third transmission gear 7 is engaged.
2 is prevented from separating from the rack gear portion 134.

When the slider 74 is moved, the cartridge holder 4 is rotated by the rotating frame 7 shown by the arrow O in FIG. 6 to move the cartridge holder 4 as shown by the arrow P in FIG. It is brought into contact with the top plate 3. The rotating frame 7 brings the contact portion 151 into contact with the contact support portion 43. The contact portions of the lock arms 44, 44 contact the contact portion 150 of the main frame 2. At this time, the mechanical chassis 1 is in a state in which it is prevented from moving due to float support. At this time, the engaging portion 87 of the loading arm 83 is fitted into the engaged groove portion 111, and the loading arm 83 and the cartridge moving plate 5 are engaged with each other.

As described above, when the cartridge holder 4 is brought into contact with the top plate 3, the spindle 73 is moved to the position shown in FIG.
As shown in FIG. 7, the slider 74 is moved to be positioned at the open end of the second engagement groove 133. Then, the rotation arm 136 follows the second transmission gear 71 as shown in FIG.
As indicated by the middle arrow Y ₂ , the third transmission gear 72 is rotated to a position where it meshes with the fourth transmission gear 63.

(3-6) Disc Cartridge Ejecting Operation The motor 64 is driven to rotate in a state where the third transmission gear 72 meshes with the fourth transmission gear 63, so that the cam gear 61 moves to the position shown in FIG. And, as shown by an arrow Y ₃ in FIG. 9, the support shaft 73 is attached to the first engaging groove portion 128.
It is operated to rotate in the direction of entering. The pivot arm 136 is prevented from pivoting by the support shaft 73 engaging with the first engaging groove 128.

By the rotation of the cam gear 61, the loading arm 83 is rotated in a direction in which the engaging portion 87 is located on the front side by the rotation of the fan-shaped plate 79 as shown in FIG. The cartridge moving plate 5
Move to the front side.

In this way, the cartridge moving plate 5 is operated to move to the front side, and the disc cartridge 22 is moved.
When 0, 221 is transported to the front side, the shutter members 206, 217 are engaged with the shutter closing hole 208 by engaging and engaging the engaging portion 102 of the shutter closing spring 100. Since it is stopped at the position where the engaging portion 102 is fitted and engaged in the lid closing hole 208, the lid closing operation is performed. The engaging portion 102 of the shutter closing spring 100
After the shutter members 206 and 217 are closed,
Furthermore, the shutter closing spring 10 is moved by transferring the disk cartridges 220 and 221 to the front side.
With the elastic displacement of 0, the shutter is removed from the shutter lid hole 208.

The loading arm 83 moves the cartridge moving plate 5 to the front side with respect to the cartridge holder 4. At this time, the torsion coil spring 107 moves the cartridge moving plate 5 to the front side, as indicated by an arrow A in FIG. In addition,
When the fan-shaped plate 79 is rotated, the ejection of the disc cartridges 220 and 221 to the front side is blocked by an external force and the rotation of the loading arm 83 is blocked, as shown in FIG. Thus, the displacement of the limiter spring 88 prevents the rotation of the fan-shaped plate 79 from being hindered. Then, when the loading arm 83 is rotated to the initial position, the first detection switch 77 by the switch operation protrusion 85 is generated.
The operation for is canceled.

In the cam gear 61, as shown in FIG. 8, the end portion of the gear portion 127 facing the first toothless portion 130 is pressed against the fourth transmission gear 63 by the urging force of the torsion coil spring. It will be stopped in the state where it was made. At this time, the support shaft 73 is engaged with the first engagement groove portion 128, and the third transmission gear 72 is meshed with the fourth transmission gear 63. The slider 74 is moved in the urging direction of the tension coil spring 126 shown by the arrow H in FIG.

The disk cartridges 220 and 221
As shown in FIG. 20, between the cartridge moving plate 5 and the hold plate 6, the front end portion is provided with the rear wall portion 139.
Is inserted until it abuts on each of the engaged recesses 2
The holding protrusions 117, 117 are fitted in the 12, 212. The disc cartridge 220,
When the 221 is pulled out to the rear side, as shown in FIG. 19, the disc cartridges 220 and 221 are arranged between the cartridge moving plate 5 and the hold plate 6 while the hold plate 6 is rotated downward. Pulled out.

In this way, the disc loading device which has completed the ejecting operation returns to the initial state.

[4] Other Embodiments In the disk loading device according to the present invention, the cam gear 61 may be replaced by a linear slider which has a rack gear portion and a toothless portion and is slidably supported. . Further, the slider 74 may be replaced with a rotatable cam gear having an arcuate gear portion and a toothless portion.

Further, in the disc loading apparatus according to the present invention, as shown in FIGS. 26 and 27, the hold plate 6 may have a lock protrusion 141 on the lower surface portion. The lock projection 141 is inserted when the hold plate 6 is in the initial position, that is, the disc cartridges 220 and 221 are properly inserted as shown in FIG. 26, or the disc cartridges 220 and 221 are inserted. Otherwise, when the cartridge moving plate 5 is moved to the rear side, it is moved to the rear side with a predetermined distance shown by an arrow d in FIG. 26 with respect to the bottom plate portion 152 of the cartridge holder 4. .

Then, the above-mentioned disc cartridge 22
0 and 221 are erroneously inserted, the hold plate 6 is
When the cartridge moving plate 5 is about to be moved to the rear side as shown by an arrow W in FIG. 27, when the lock projection 141 is rotated downward, as shown by an arrow U in FIG. The cartridge moving plate 5 is prevented from moving by coming into contact with the front edge portion of the bottom plate portion 152.

In the disc loading device according to the present invention, as shown in FIGS. 28 and 29, each of the lock arms 44, 44 may have an engaging groove portion 143. The engaging groove portion 143 is rotated in a direction in which the rotating frame 7 contacts the top plate 3 with the cartridge holder 4 as indicated by an arrow O in FIG. As indicated by the middle arrow Q 29, when it is rotated following the rotation frame 7, it engages with the engagement pin 142 implanted in the main frame 2. At this time, movement of the mechanical chassis 1 with respect to the main frame 2 is blocked.

The engaging groove 143 is rotated in a direction in which the rotating frame 7 separates the cartridge holder 4 from the top plate 3, as indicated by an arrow R in FIG. When 44 is rotated following the rotating frame 7 as shown by the arrow T in FIG. 28,
The engagement with the engagement pin 142 is released.

[0099]

As described above, in the disc loading apparatus according to the present invention, one end side is engaged with the first cartridge holder that movably holds the disc cartridge so that the first cartridge holder can be moved. The compression spring member having the other end engaged with the second cartridge holder supported and engaged with the disc cartridge,
When the second cartridge holder is positioned substantially forward of the center position with respect to the first cartridge holder, the second cartridge holder is urged to move forward so that the second cartridge holder is When the second cartridge holder is located rearward of the center position with respect to the first cartridge holder, the second cartridge holder is urged to move rearward.

Therefore, in this disc loading device, the second cartridge holder is reliably positioned at either the front side position or the rear side position.

In this disc loading device, during the ejecting operation, the disc cartridge is sufficiently ejected to the outside from the first cartridge holder while being retained by the second cartridge holder. Can be done.

Further, in the above-mentioned disc loading device, an engaging member provided on the second cartridge holder, which is movable in a direction substantially orthogonal to the inserting operation direction of the disc cartridge, and this engaging member. When the disc cartridge is inserted into the first cartridge holder, the engaging member is attached to the one main surface side of the disc cartridge when the disc cartridge is inserted into the first cartridge holder. An urging member that engages with the engaged recess provided in the first cartridge holder to reach the initial position, and when the engaging member is displaced to the outside of the first cartridge holder from the initial position, When the second cartridge holder is moved and operated with respect to the first cartridge holder, the second cartridge holder comes into contact with the engagement member and the first cartridge of the second cartridge holder. When provided with a stopper member for preventing movement relative Rijjihoruda it is by the stopper member, the second cartridge holder when erroneous insertion of the disc cartridge can be reliably prevented from being moved.

That is, according to the present invention, the recording disk can be reliably mounted on the recording and / or reproducing apparatus, and at the time of the ejecting operation, the recording disk can be ejected from the recording and / or reproducing apparatus in a stable state. Therefore, it is possible to provide a disc loading device that is capable of reliably preventing erroneous insertion.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration of a disc loading device according to the present invention, which is configured as a main part of a disc player device.

FIG. 2 is a plan view showing a configuration of the disc loading device.

FIG. 3 is a plan view showing a state where a disc cartridge insertion operation is performed in the disc loading device.

FIG. 4 is a plan view showing a state in which the loading operation of the disc cartridge is completed in the disc loading device, or a state before the ejection operation of the disc cartridge is started.

FIG. 5 is a plan view showing a state where a chucking operation of the disc cartridge is completed in the disc loading device.

FIG. 6 is a side view showing a state when a chucking release operation is completed in the disc loading device.

FIG. 7 is a side view showing a state when a chucking operation is completed in the disc loading device.

FIG. 8 is an enlarged plan view showing the configurations of a loading motion transmission member and a chucking motion transmission member of the disc loading device.

FIG. 9 is an enlarged plan view showing a state in which the loading operation transmitting member and the chucking operation transmitting member have started a disk loading operation, or a state in the middle of a disk discharging operation.

FIG. 10 is an enlarged plan view showing a state where the disk loading operation of the loading operation transmission member and the chucking operation transmission member is almost completed, or a state where the disk ejection operation is started.

FIG. 11 is an enlarged plan view showing a state in which a disk chucking operation is started after the disk loading operation of the loading operation transmission member and the chucking operation transmission member is completed, or a state in which the disk chucking release operation is completed. .

FIG. 12 is an enlarged plan view showing a state in which a disk chucking operation of the loading operation transmitting member and the chucking operation transmitting member has started, or a state in the middle of a disk chucking releasing operation.

FIG. 13 is an enlarged plan view showing a state in which a disk chucking operation of the loading operation transmission member and the chucking operation transmission member is completed.

FIG. 14 is a perspective view showing the configuration of the loading motion transmission member as seen from the lower surface side.

FIG. 15 is a perspective view showing a configuration of the chucking motion transmission member.

FIG. 16 is a perspective view showing the structure of the chucking motion transmission member as seen from the lower surface side.

FIG. 17 is a perspective view from the lower surface side showing a configuration of a rotation arm and a transmission gear for selectively moving and operating the loading motion transmission member and the chucking motion transmission member.

FIG. 18 is a vertical sectional view showing a configuration of a cartridge holder of the disc player device.

FIG. 19 is a vertical cross-sectional view showing a state in which the disc cartridge is being inserted into the cartridge holder.

FIG. 20 is a vertical cross-sectional view showing a state where the operation of inserting the disc cartridge into the cartridge holder is completed.

FIG. 21 is a vertical cross-sectional view showing a state where the disc cartridge is inserted into the cartridge holder in the wrong direction.

FIG. 22 is a perspective view showing the configuration of a recording / reproducing disc cartridge loaded by the disc loading device.

FIG. 23 is a perspective view showing a configuration of a reproduction-only disc cartridge loaded by the disc loading device.

FIG. 24 is a perspective view showing the configuration of the disk cartridge for both recording and reproduction, which is viewed from the bottom side.

FIG. 25 is a perspective view showing the configuration of the reproduction-only disc cartridge as viewed from the bottom side.

FIG. 26 is a vertical cross-sectional view showing another example of the configuration of the cartridge holder, showing a state where the insertion operation of the disc cartridge is completed.

FIG. 27 is a vertical cross-sectional view showing a state in which the disc cartridge is inserted in the wrong direction in the cartridge holder shown in FIG. 26.

FIG. 28 is a side view of essential parts showing another example of the configuration of the rocker arm of the disc player device.

29 is a side view of essential parts showing a state in which the rocker arm shown in FIG. 8 blocks the movement of the mechanical chassis.

[Explanation of symbols]

4 ・ ・ ・ ・ ・ ・ ・ ・ ・ Cartridge holder 5 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Cartridge moving plate 6 ・ ・ ・ ・ ・ ・ ・ ・ ・ Hold plate 106 ・ ・ ・········· Abutting through hole 107 ······ Torsion coil spring 115 ····· Torsion coil spring 117 ··· ........ Holding protrusion 119 .................. Incorrect insertion prevention claw 212 ..... Engagement recess 220 .. .... Recording and playback disc cartridge 221 .................. Playback-only disc cartridge

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 5, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0061

[Correction method] Change

[Correction content]

The cam gear 61 is engaged with the first engagement groove portion 128 by the torsion coil spring 153 serving as a first biasing member, as indicated by an arrow G in FIGS. 1, 2 and 8. The supporting shaft 73 is urged to rotate in a direction in which the supporting shaft 73 comes out of the open end portion of the first engaging groove portion 128 to the defective portion. As shown in FIG. 14, the torsion coil spring 153 is arranged in an annular groove 154 formed in the lower surface of the cam gear 61.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0073

[Correction method] Change

[Correction content]

The cam gear 61 is rotationally urged by the torsion coil spring 153 as shown by an arrow G in FIG. 8, and the end portion of the gear portion 127 facing the first toothless portion 130 is moved to the first portion. It is pressed against the transmission gear 63 of No. 4. The support shaft 73 is engaged with the first engagement groove portion 128,
The third transmission gear 72 is meshed with the fourth transmission gear 63. The slider 74 is moved in the urging direction of the tension coil spring 126 shown by the arrow H in FIG.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0076

[Correction method] Change

[Correction content]

(3-3) Loading Operation of Disk Cartridge By operating the first detection switch 77,
The rotational driving of the motor 64 is started, and as shown in FIG. 9, the cam gear 61 is rotationally operated in the direction biased by the torsion coil spring 153 as shown by an arrow X ₃ in FIG. At this time, the rotating arm 136
Is urged to rotate so that the third transmission gear 72 is separated from the fourth transmission gear 63, as indicated by an arrow X ₂ in FIG. By engaging with the engaging groove portion 128, the rotation is blocked.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0091

[Correction method] Change

[Correction content]

In the cam gear 61, as shown in FIG. 8, the end portion of the gear portion 127 which faces the first toothless portion 130 by the biasing force of the torsion coil spring 153 is connected to the fourth transmission gear 63. It is stopped in the pressed state. At this time, the support shaft 73 is engaged with the first engagement groove portion 128, and the third transmission gear 72 is meshed with the fourth transmission gear 63. The slider 74 is moved in the urging direction of the tension coil spring 126 shown by the arrow H in FIG.

[Procedure Amendment 5]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure correction 6]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Change

[Correction content]

[Figure 8]

[Procedure Amendment 7]

[Document name to be corrected] Drawing

[Correction target item name] Figure 9

[Correction method] Change

[Correction content]

[Figure 9]

[Procedure Amendment 8]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 10

[Correction method] Change

[Correction content]

[Figure 10]

[Procedure Amendment 9]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 11

[Correction method] Change

[Correction content]

FIG. 11

[Procedure Amendment 10]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 12

[Correction method] Change

[Correction content]

[Fig. 12]

[Procedure Amendment 11]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 13

[Correction method] Change

[Correction content]

[Fig. 13]

[Procedure Amendment 12]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 14

[Correction method] Change

[Correction content]

FIG. 14

Claims (2)

[Claims] 1. A first cartridge holder that holds an inserted disc cartridge so as to be movable in the inserting operation direction, and a first cartridge holder that is supported so as to be movable in the inserting operation direction with respect to the first cartridge holder. Second engaging with the disc cartridge inserted into the first cartridge holder
And a compression spring member having one end engaged with the first cartridge holder and the other end engaged with the second cartridge holder, wherein the compression spring member is the second cartridge holder. Is located forward of the center of the first cartridge holder, the second cartridge holder is urged to move forward so that the second cartridge holder moves relative to the first cartridge holder. A disk loading device in which the second cartridge holder is urged to move rearward when the second cartridge holder is positioned substantially rearward of the center position. 2. An engaging member provided on a second cartridge holder, which is movable in a direction substantially orthogonal to a disc cartridge inserting operation direction, and the engaging member in the first cartridge holder. When the disc cartridge is inserted into the first cartridge holder and urged to move in the direction toward one side to the initial position, the engaging member is provided on the one main surface side of the disc cartridge. A biasing member that engages with the fitting recess to form the initial position, and the second cartridge holder when the engagement member is displaced to the outside of the first cartridge holder from the initial position. When the second cartridge holder is moved with respect to the first cartridge holder, the second cartridge holder moves relative to the first cartridge holder by contacting the engaging member. Blocking disc loading device according to claim 1, wherein comprising a stopper member for.