JPH01133255A - Auto-loading device for recording and reproducing device - Google Patents

Abstract

PURPOSE:To solve the defect of the impossibility of removing a recording medium when a power failure occurs while the recording medium is still fitted to the title device by interrupting the engagement of a first transmitting body and a second sliding body with a releasing part at the time of the power failure. CONSTITUTION:An auto-loading device is formed so that the engagement of the first transmitting body 46 and the second sliding body 36 can be disconnected with a releasing part 50 at the time of the power failure. Thereafter, since a second long hole along the operating direction of a cassette guide 8 is engaged with a second engaging protruded part 54 at the linked part of a second transmitting body 51 and the cassette guide 8, the cassette guide 8 can be slid manually a cassette holder can be separated from the bottom part of a frame with the relative moving actions of a shaft part 27 and an inclined groove 29 at this time. Thus, while the recording medium is disengaged from a driving shaft 10, a first sliding body 34 is released from a locking part, and the first sliding body 34 is restored with an energizing force, and, in this process, a cassette ejecting lever is restored with the energizing force, and a disk cassette is ejected from a cassette holder 9 with the restoring force.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to an autoloading device for a recording/reproducing device.

2. Description of the Related Art Conventionally, some recording and reproducing apparatuses, such as floppy disk drives, are designed to manually insert and eject a recording medium.

Problems to be Solved by the Invention However, if handled by an inexperienced person, there is a risk of forcefully pushing the recording medium and damaging the internal mechanism.

For this reason, devices have been devised in which the recording medium is loaded or ejected using power, but this has the disadvantage that if the power goes out while the recording medium is loaded, the recording medium cannot be removed.

Means for Solving the Problem A disk cassette is provided in which a disk-shaped recording medium is housed in a flat hard case, and a rotatable drive shaft directly connected to the recording medium and a rotatable drive shaft for recording and reproduction are installed at the bottom of the frame. a movable carrier holding a head; a guide portion movably holding a cassette holder that holds the disk cassette in and out of the drive shaft; a guide portion for slidably guiding a cassette guide biased in the direction is formed on the frame, and a plurality of guide portions protruding laterally on one of opposing surfaces on both sides of the cassette holder and the cassette guide; Shaft portions are provided, and a plurality of inclined grooves are formed on the other surface to engage with these shaft portions, and a first sliding body is provided on the cassette holder so as to be biased and slidable in a direction in which the disc cassette is ejected. , a second sliding member is provided on the first sliding member so as to be able to slide freely by urging the second sliding member in the ejection direction of the disk cassette, and a lock portion that engages with the first sliding member is provided on the bottom of the frame. , a hook portion located inside a window formed on a side surface of the cassette holder and engaged with a locking recess formed on a front side surface of the disk cassette; and a hook portion of the cassette holder from the base of the hook portion. A cassette hook having a receiving portion protruding inward to receive the front edge of the disk cassette is rotatably provided on the side of the first sliding body, and abutting contact that comes into contact with the front edge of the disk cassette. A cassette ejection lever having a distal end portion biased in the disc cassette ejecting direction is rotatably provided on the first sliding body, and is brought into contact with the receiving portion to move the hook portion to the cassette holder. A cam having an outer circumferential surface to be engaged with the window and a recess formed in a part of the outer circumferential surface is fixedly provided at the rotational center of the cassette ejection lever, and the disk cassette is inserted into the cassette holder. A loading drive section that operates by changing the direction of operation according to a detection signal from a detector that detects the operation and an ejection command signal is provided, and the first transmission body driven by the loading drive section and the second sliding body are connected to each other. A first engaging protrusion is provided on one of the facing surfaces, and a first elongated hole that engages with the first engaging protrusion is formed toward the bottom of the base on the other surface, and the loading drive A second engaging protrusion is provided on one of the facing surfaces of the second transmitting body driven by the cassette guide and the second transmitting body is provided with a second engaging protrusion on the other face that engages with the second engaging protrusion. A long hole is formed along the operating direction of the cassette guide, and a release portion for releasing the engagement between the first transmission body and the sliding body is provided.

Therefore, the inward rotation of the cassette hook is prevented by the contact between the outer circumferential surface of the cam and the receiving part, and the hook part is engaged with the window of the cassette holder. The first slide is fixed until the disk cassette is fully inserted. The cassette ejection lever rotates when the abutting part at the tip is pressed by the disk cassette inserted into the cassette holder, and the recessed part of the cam faces the receiving part of the cassette hook. As a result, when the receiving part is pressed against the front edge of the disc cassette, the cassette hook is allowed to rotate inward, and the hook part escapes from the window of the cassette hook and is formed on the side of the disc cassette. Engages with the locking recess. Next, the loading drive section is driven in one direction by the operation of the detector that detects the insertion of the disk cassette, and the second sliding body is retracted by the first transmission body together with the first sliding body and the disk cassette,
On the other hand, as the second transmission body operates, the cassette guide slides in one direction, and the cassette holder approaches the bottom of the frame due to the relative movement between the shaft and the inclined groove on the opposing surfaces of the cassette holder and cassette guide. Then, the recording medium is connected to the drive shaft, the first sliding body moved to the bottom of the frame is fixed by the locking part, and with this disk cassette attached, the recording medium is driven by the drive shaft, and in the process of moving the carrier. Data is recorded or reproduced by the head.

When ejecting the disk cassette, the connection between the first transmission body and the second sliding body is released by the release unit, the second sliding body is released from the loading drive unit, and when the loading drive unit is driven in the other direction. , the cassette guide slides in the opposite direction to its biasing direction by the second transmission body, and the cassette holder separates from the bottom of the frame due to the relative movement between the shaft portion and the inclined groove at this time. When the medium is removed from the drive shaft, the first sliding body is released from the lock part, and the first sliding body returns due to force. During this process, the cassette ejection lever returns due to force, and the disk cassette is removed by the returning force. is ejected from the cassette holder.

At the time of power outage, the release portion disconnects the first transmitting body and the second sliding body. In the connecting portion between the second transmission body and the cassette guide, the second engagement protrusion engages with the 20th long hole along the operating direction of the cassette guide, so the cassette guide is manually slid. At this time, the relative movement between the shaft part and the inclined groove causes the cassette holder to separate from the bottom of the frame, and as a result, the recording medium is removed from the drive shaft and the first sliding body is released from the lock part. Then, the first sliding body returns due to the force, and in this process, the cassette ejection lever returns due to the force, and the disk cassette is ejected from the cassette holder by the returning force.

Further, a second sliding body having a slider that slides in the left-right direction is slidably provided on the first sliding body, and one surface of the facing surface of the first transmission body and the slider of the second sliding body is provided. A first engagement protrusion is provided on the other side of the base, and a first elongated hole that engages with the first engagement protrusion is formed toward the bottom of the base. By providing a release portion for retracting the slider from the transmission body, the release portion is manually operated to retract the slider from the second transmission body, thereby allowing the cassette guide to be manually slid at any time to release the disc. The cassette can now be taken out.

Furthermore, by forming a notch-shaped release part continuously in the first elongated hole to release the engagement with the first engagement protrusion when the first sliding body and the lock part are engaged, the cassette holder When the first sliding body approaches the bottom of the frame and the recording medium is connected to the drive shaft, the first sliding body approaches the bottom of the frame together with the second sliding body, but during this operation, the first engaging protrusion is cut out. Since the recording medium is located in the release part of the shape and comes off from the No. 10 slot, when the recording medium is connected to the drive shaft, the second sliding body is returned by the biasing force and the loading drive unit and the second sliding body are connected to each other. It is possible to automatically break the connection. therefore,
By manually sliding the cassette guide in the other direction, it is possible to move the cassette holder away from the bottom of the frame, release the first sliding body from the locking part, and perform the ejection operation of the disk cassette.

Embodiment An embodiment of the present invention will be described based on drawings of an optical disk drive. 1 shown in FIGS. 8 and 9 is a disk cassette. This disk cassette l has a disk-shaped recording medium 3 with a hub 2 fixed at the center housed in a flat hard case 4, and a shutter 5 urged by the hard case 4 in the closing direction slides left and right. The shutter 5 is movably mounted, and a recess 6 is formed at the front edge of the shutter 5 .

1 is a plan view showing the cassette holder 9 attached to the cassette guide 8 held by the frame 7, FIG. 3 is a plan view showing how the cassette guide 8 is attached to the frame 7 after removing the cassette holder 9, 5 is a side view, each of which shows the state before the disk cassette 1 is installed. Similarly, FIG. 2 is a plan view of the cassette holder 9 attached to the cassette guide 8 held by the frame 7, and FIG. 4 is a plan view of the cassette guide 8 attached to the frame 7 with the cassette holder 9 removed. Figure 6 is a side view.
In both cases, the state in which the disk cassette 1 is loaded is shown. As shown in Figures 3, 4, 5, and 6,
A spindle motor 11 for driving a drive shaft 10 protruding from the bottom 7a is fixed to the frame 7, and a recording and reproducing head 12 protrudes from the bottom 7a.
A carrier 13 on which is mounted is connected to a carrier motor (not shown) so as to be movable back and forth. Further, as shown in FIGS. 3 and 4, studs 14.15 serving as guide portions are erected on the bottom 7a of the frame 7, and the guide grooves 1 are slidably held by these studs 14.15.
6.17 is formed on the cassette guide 8. The cassette guide 8 has an operation button 18 on the front and is biased by a spring 19 in the direction in which the hard case 4 is ejected. Furthermore, an arm 21 that is biased clockwise about a fulcrum 20 is rotatably attached to the bottom 7a of the frame 7, and this arm 21 has a bin 22 that projects downward and a bin 23 that projects upward. has been erected.

An opening 26 having a stepped portion 24 and an inclined edge 25 that abuts the bin 22 is formed in the cassette guide 8.

Further, on both sides of the cassette holder 9, as shown in FIG. 5 and FIG. Grooves 28 are formed on both sides of the frame 7, and grooves 28 are formed on both sides of the frame 7 to guide the cassette guide 8 in a slidable manner. An inclined groove 29 is formed to engage with each of the two.

The cassette holder 9 has a flat shape with an opening at the center of one surface facing the bottom 7a of the frame 7, and an arcuate groove 30 is formed on the opposite surface that covers the opening, and a plurality of studs 31 are formed. It is erected. and,
A guide groove 3 is slidably fitted into these studs 31.
2 is formed, and a first sliding body 34 is provided which is biased by a spring 33 in the same direction as the ejecting direction of the disk cassette 1. Furthermore, the first sliding body 34
A second sliding member 36 is slidably provided on the disc cassette 1. The second sliding member 36 is biased by a spring 35 in the same direction as the ejecting direction of the disk cassette 1. That is, the second sliding body 36 is provided with a guide groove 38 that fits into a plurality of studs 37 erected on the first sliding body 34 . The second sliding body 36 has a slider 40 along its front edge that is biased leftward by a spring 39 and slides in the left-right direction.A bin 41 is erected at the right end of the slider 40, and A first engagement protrusion 42 that protrudes laterally is provided upright.

Further, a motor 44 which is a loading drive unit and which is rotatable in forward and reverse directions is fixed to the frame 7 to which a disc 43 is directly connected. As shown in FIGS. 5 to 7, a first transmitting body 46 that rotates around a fulcrum 45 is provided on one side of the frame 7, and this first transmitting body 46 includes a disk 4.
3, an oval hole 48 fitted into the vertically installed bottle 47, a first elongated hole 49 toward the bottom 7a of the frame 7, and a notched release portion continuous to the lower end of the first elongated hole 49. 50 are formed. In addition, a second transmitting body 51 is attached to the disc 43.
One end of the second transmitting body 51 is rotatably held by a pin 52, and a second elongated hole 53 along the sliding direction of the cassette guide 8 is formed at the other end of the second transmitting body 51. A second engagement protrusion 54 fitted into the second engagement protrusion 53 is erected on the left side of the cassette guide 8.

Next, as shown in FIGS. 1 to 4, the frame 7
A plurality of studs 56 are attached to the bent piece 55 bent to the right side.
A release plate 58, which is a release portion, is provided which has guide grooves 57 fitted into these studs 56. A rail 59 is bent on the release plate 58 and comes into contact with the left side of the bin 41 erected at the right end of the slider 40 . This release plate 58, as shown in FIGS. 3 and 4,
It is connected to an eject lever 60 that is held by the frame 7 so as to be slidable in the front-rear direction, and the tip of the eject lever 60 is located near the operation button 18 . Note that the guide groove 57 of the release plate 58 is gradually inclined toward the right as it goes rearward.

Therefore, when the eject lever 60 is pushed rearward, the release plate 58 slides rearward and moves to the right side, and the rail 5
9 presses the bottle 41 to the right and retracts the slider 40 from the first transmission body 46.

Next, the internal structure of the cassette holder 9 will be explained based on FIGS. 8 and 9. On both sides of the first sliding body 34 held by the cassette holder 9, locking recesses 4a formed on both sides of the hard case 4 are located inside windows 62a formed on both sides of the cassette holder 9. A cassette hook 63 and 64 having a hook portion 62 to be engaged and a receiving portion 61 that protrudes inward from the base of the hook portion 62 and receives rotational torque by being pressed against the front edge of the hard case 4 is attached to the fulcrum 65.
It is held rotatably around the center. A light shielding piece 66 that blocks the optical axis of a detector 67 attached to the first sliding body 34 is integrally formed on the left cassette hook 63 . Furthermore, cassette ejection levers 69 are provided on both sides of the first sliding body 34 and are biased in one direction by a spring 70 and rotated about a fulcrum 68 . A contact portion 71 is provided on the free rotation end side of these cassette ejection levers 69, and a contact portion 71 that comes into contact with the front edge of the hard case 4 to receive rotation torque is provided at the center of rotation. A cam 72 is provided that has an outer circumferential surface 72a that abuts the portion 61 and a recess 72b formed in a part of the outer circumferential surface 72a. Further, an engaging body 74 is fixed to the first sliding body 34, and engages with a fixed shaft 73, which is a locking portion provided upright on the bottom 7a of the frame 7.

In such a configuration, FIG. 8 shows a state in which the disk cassette 1 is not mounted on the cassette holder 9, and the cassette ejection lever 69 is biased by the spring 70 and opens to both sides, and the outer circumferential surface 72a of the cam 72 pushes the cassette ejection lever 69 toward the receiving part. The tips of the cassette hooks 63 and 61 are pressed to prevent rotational movement of the cassette hooks 63 and 64. Therefore, since the hook portions 62 protrude from the windows 62a formed on both sides of the cassette holder 9, the first sliding body 3
Even if 4 is pushed backwards, the sliding movement is prohibited. As shown in FIG. 9, when the disk cassette 1 is inserted into the cassette holder 9, the abutment part 71 is attached to the hard case 4 or the shutter 5.
The cassette ejection lever 69 is rotated by contacting the front edge of the cassette ejection lever 69 and receiving rotational torque, thereby deflecting the spring 70. At this time, the contact portion 71 of the left cassette ejection lever 69 is connected to the shutter 5.
The shutter 5 is rotated while opening to the right in order to engage with the recess 6 of the shutter 5. During the rotation of the cassette ejection lever 69, the outer circumferential surface 72a of the cam 72 retreats from the tip of the receiving portion 61, the recess 72b faces the receiving portion 61, and the leading edge of the disk cassette 1 presses the receiving portion 61. Therefore, the cassette hooks 63 and 64 rotate, and the hook portions 62 are retracted inside the window 62a and engaged with the locking recesses 4a formed on both sides of the hard case 4. Furthermore, since the optical axis of the detector 67 is blocked by the light shielding piece 66 formed integrally with the cassette hook 63, the detector 67 detects when the disk cassette 1 is inserted to a certain depth and outputs a detection signal. Output. This detection signal causes the motor 44 to rotate in one direction, and the disc 43 to rotate clockwise from the state shown in FIG. 5 to the clockwise direction as shown in FIG. Therefore, on the one hand, the first transmission body 46 rotates counterclockwise around the fulcrum 45, and the second sliding body 36 to the back of frame 7. The first sliding body 34 holding the second sliding body 36 has a cassette hook 63
．． The disk cassette 1 is held by the hook portion 62 of 64 and pulled into the back of the frame 1, and the hub 2 of the recording medium 3 is located at the center of the drive shaft 1o. On the other hand, the second transmission body 51 moves from the back of the frame 7 to the front side, and
The front edge of the first sliding body 34 presses the bottle 23 of the arm 21 and rotates the arm 21 around the fulcrum 20.
is removed from the stepped portion 24 of the cassette guide 8, so the cassette guide 8 slides toward the front side of the frame 7 by the force of the spring 19 while moving the second engagement protrusion 54 along the first elongated hole 53. move. At this time, the inclined groove 29 of the cassette guide 8 presses the shaft 27 toward the bottom 7a of the frame 7, the cassette holder 9 approaches the bottom 7a of the frame 7, and the hub 2 of the recording medium 3 is connected to the drive shaft 10. be done. In addition, in this state, as shown in FIG.
As shown in FIG. 7, the second sliding body 3
6 returns from the back of the frame 7 by the force of the spring 35.

In this way, the first and second sliding bodies 34 and 36 are connected to the motor 4.
However, the first sliding body 34 is prevented from returning from the back of the frame 7 because its locking body 74 engages with the fixed shaft 73. That is, when the recording medium 3 is connected to the drive shaft 10, the first and second sliding bodies 34.3
6 and the motor 44 can be automatically disconnected.

In this state, the recording medium 3 is rotated by the spindle motor 11, the carrier 13 is moved, and data is recorded or reproduced by the head 12.

When ejecting the disk cassette 1, the motor 44 is driven in the other direction by the ejection command signal. As a result, the seventh
The disk 43 rotates counterclockwise from the state shown in the figure, and the second transmission body 51 slides toward the back of the frame 7, so the cassette guide 8 is pulled in and tilted with the shaft portion 27 at this time. Due to the movement relative to the groove 29, the cassette holder 9 separates from the bottom 7a of the frame 7, and as a result, the recording medium 3 comes off the drive shaft 10, and the first sliding body 3
4 is released from the fixed shaft 73, the first sliding body 34 returns due to the biasing force of the spring 33, and in this process, the cassette ejection lever 69 returns due to the biasing force of the spring 7Q, and the returning force releases the disk cassette 1. The cassette is ejected from the cassette holder 9 and returns to the state shown in FIG. At the same time, the first transmission body 46 rotates clockwise. Then, by slanting the tip end surface of the first engagement protrusion 42 inward toward the back of the frame 7, the first engagement protrusion 42 reconnects to the first elongated hole 49. will be engaged. Also, when the cassette guide 8 is pulled into the back of the frame 7, the arm 21
returns clockwise from the state shown in FIG. 4 while sliding the bottle 22 along the inclined edge 25 of the cassette guide 8, and as shown in FIG. 8 is prevented from returning.

Furthermore, if a power outage occurs while the disk cassette 1 is installed in the state shown in FIG. In addition, since the second transmitting body 51 has a second long hole 53 formed along the sliding direction of the cassette guide 8, the cassette guide 8 is moved into the frame 7 against the force of the spring 19. By sliding the cassette holder 9 to the back of the frame 7, the cassette holder 9 is separated from the bottom 7a of the frame 7, the first sliding body 34 is released from the fixed shaft 73, and the disk cassette 1 can be taken out according to the operations described above. be.

In addition, if a power outage occurs while installing the disk cassette 1, press the eject lever 60 and release the release plate 5.
8 to the back of frame 7.

As a result, the slider 40 is moved to the right against the force of the spring 39 and removed from the first transmission body 46.

Therefore, from time to time, the second sliding body 36 and the left third transmitting body 4
6 and slide the cassette guide 8 toward the back of the frame 7 to eject the disk cassette l.

Particularly, as described above, at the initial stage of inserting the disk cassette 1 into the cassette holder 9, the pressure of the non-day cassette 1 acting on the cassette ejection lever 69 acts as pressure to press the first sliding body 34 backward. However, since the hook portion 62 of the cassette hook 63 engages with the window 62a of the cassette holder 9, the first sliding body 34 can be fixed. For this reason, there is no need to increase the pressure of the spring 33 against the pressure of the disk cassette 1.

Therefore, the disk cassette l is completely inserted deep into the cassette holder 9, and the hook portion 62 of the cassette hook 63
When the first sliding member 34 is retracted from the window 62a of the cassette holder 9 and engaged with the locking recess 4a of the disk cassette 1, the first sliding member 34 can be pulled rearward with a force slightly stronger than the force of the spring 33. Thereby, the capacity of the motor 44 can be reduced.

Effects of the Invention Since the present invention is constructed as described above, the disk cassette inserted into the cassette holder is held by the cassette hook provided on the first sliding body, the loading drive unit is driven in one direction, and the first The second sliding body is drawn together with the first sliding body and the disk cassette by the transmission body, and the second transmission body is operated to slide the cassette guide in one direction to bring the cassette holder closer to the bottom of the frame. When the disc cassette is ejected, the first transmission body and the second sliding body are disconnected from each other by the release unit, and the second sliding body is released from the loading drive unit. Release.

The loading drive unit is driven in the other direction, and the second transmission body slides the cassette guide in the opposite direction to the biasing direction to move the cassette holder away from the bottom of the frame, thereby moving the recording medium away from the drive shaft. At the same time, the first sliding body is released from the lock part, the first sliding body is returned to its original position by the biasing force, and in this process, the disk cassette can be ejected from the cassette holder by the cassette ejection lever,
In the event of a power outage, the release section disconnects the first transmission body and the second sliding body, and the cassette guide is manually slid to separate the cassette holder from the bottom of the frame, thereby moving the recording medium to the drive shaft. The disc cassette can be ejected from the cassette holder by releasing the first sliding body from the lock part and returning the first sliding body by the biasing force. A second sliding body is slidably provided on the first sliding body, and a first engaging protrusion is provided on one surface of the opposing surface of the first transmitting body and the slider of the second sliding body. a release part that has a first elongated hole facing the bottom of the base that engages with the first engagement protrusion on the other surface, and retracts the slider from the first transmission body by a unidirectional operation; By providing the disc cassette, the slider can be retracted from the second transmission body by manually operating the release part, and the disc cassette can be taken out by manually sliding the cassette guide at any time.
Furthermore, by forming a notch-shaped release part continuously in the first elongated hole to release the engagement with the first engagement protrusion when the first sliding body and the lock part are engaged, the cassette holder When the recording medium approaches the bottom of the frame and the recording medium is connected to the drive shaft, the first engagement protrusion is located at the notch-shaped release part and comes off from the first elongated hole, so the recording medium is connected to the drive shaft. In the state in which the cassette guide is connected to In particular, at the beginning of inserting the disk cassette 1 into the cassette holder, the pressure of the disk cassette acting on the cassette ejection lever is the pressure that presses the first sliding body backward. However, since the hook part of the cassette hook engages with the window of the cassette holder, the first sliding body can be fixed. There is no need to increase the return force of the sliding body, so when the disc cassette is completely inserted into the cassette holder and the cassette hook is retracted from the window of the cassette holder and engaged with the locking recess of the disc cassette, the first It has the effect of being able to pull the sliding body into the body with a small force.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view showing a state before a disk cassette is installed, FIG. 2 is a plan view showing a state with a disk cassette installed, and FIG.
The figure is a plan view showing the position of the cassette guide before the disk cassette is installed, FIG. 4 is a plan view showing the position of the cassette guide when the disk cassette is installed, and FIG.
The figure is a side view showing the state before the disk cassette is installed, FIG. 6 is a side view showing the process of installing the disk cassette, FIG. 7 is a side view showing the state with the disk cassette installed, and FIG. 8 is the disk FIG. 9 is a horizontal sectional view showing the cassette holder in a state before a cassette is inserted, and FIG. 9 is a horizontal sectional view showing the cassette holder in a state in which a disk cassette is attached. 1... Disc cassette, 3... Recording medium, 4...
・Hard case, 4a...Latching recess, 7...Frame, 8...Cassette guide, 9...Cassette holder, 10...Drive shaft, 12...Head, 13...Carrier , 14° 15... Stud (guide part), 27.
... Shaft part, 28... Groove (guide part), 29... Slanted groove, 34... First sliding body, 36... Second sliding body,
40...Slider, 42...First engagement protrusion, 44
...Motor (loading drive part), 46...First transmission body, 49...First elongated hole, 50...Release part,
51... Second transmission body, 53... Second elongated hole, 54
... second engagement protrusion, 58 ... release plate (release part),
61... Receiving part, 62... Hook part, 62a... Window, 63.64... Cassette hook, 67... Detector, 69... Cassette ejection lever, 71... Contact Department,
72...Cam, 72a...Outer circumferential surface, 72b...Recess, 73...Fixed shaft (lock part) 3.3 Figure, lO Mutsu J3 q Figure

Claims (1)

[Claims] 1. A disk cassette is provided in which a disk-shaped recording medium is housed in a flat hard case, and a rotatable drive shaft directly connected to the recording medium and a rotatable drive shaft for recording and reproduction are provided at the bottom of the frame. a movable carrier holding a head; a guide portion movably holding a cassette holder that holds the disk cassette in and out of the drive shaft; a guide portion for slidably guiding a cassette guide biased in the direction is formed on the frame, and a plurality of guide portions protruding laterally on one of opposing surfaces on both sides of the cassette holder and the cassette guide; Shaft portions are provided, and a plurality of inclined grooves are formed on the other surface to engage with these shaft portions, and a first sliding body is provided on the cassette holder so as to be biased and slidable in a direction in which the disc cassette is ejected. , a second sliding member is provided on the first sliding member so as to be able to slide freely by urging the second sliding member in the ejection direction of the disk cassette, and a lock portion that engages with the first sliding member is provided on the bottom of the frame. , a hook portion located inside a window formed on a side surface of the cassette holder and engaged with a locking recess formed on a front side surface of the disk cassette; and a hook portion of the cassette holder from the base of the hook portion. A cassette hook having a receiving portion protruding inward to receive the front edge of the disk cassette is rotatably provided on the side of the first sliding body, and abutting contact that comes into contact with the front edge of the disk cassette. A cassette ejection lever having a distal end portion biased in the disc cassette ejecting direction is rotatably provided on the first sliding body, and is brought into contact with the receiving portion to move the hook portion to the cassette holder. A cam having an outer circumferential surface to be engaged with the window and a recess formed in a part of the outer circumferential surface is fixedly provided at the rotational center of the cassette ejection lever, and the disk cassette is inserted into the cassette holder. A loading drive section that operates by changing the direction of operation according to a detection signal from a detector that detects the operation and an ejection command signal is provided, and the first transmission body driven by the loading drive section and the second sliding body are connected to each other. A first engaging protrusion is provided on one of the facing surfaces, and a first elongated hole that engages with the first engaging protrusion is formed toward the bottom of the base on the other surface, and the loading drive A second engaging protrusion is provided on one of the facing surfaces of the second transmitting body driven by the cassette guide and the second transmitting body is provided with a second engaging protrusion on the other face that engages with the second engaging protrusion. A recording and reproducing device characterized in that a long hole is formed along the operating direction of the cassette guide, and a release portion is provided for releasing the engagement between the first transmission body and the second sliding body. autoloading device. 2. A disk cassette in which a disk-shaped recording medium is housed in a flat disk cassette is provided, and a rotatable drive shaft directly connected to the recording medium and a recording and reproducing head are held at the bottom of the frame. a guide portion that holds a cassette holder movably in the axial direction of the drive shaft, which is biased in one direction along the direction in which the disk cassette is taken in and out; A guide portion for slidably guiding the cassette guide is formed on the frame, and a plurality of shaft portions protruding laterally are provided on one of opposing surfaces of the cassette holder and the cassette guide on the other side. A plurality of inclined grooves that engage with these shaft portions are formed on the surface, and a first sliding member is provided on the cassette holder so as to be slidable by biasing the first sliding member in the ejection direction of the hard case, so that the first sliding member is slidable in the left-right direction. a second sliding body having a slider that is biased in the ejection direction of the hard case and slidably provided on the first sliding body, and a lock that engages with the first sliding body at the bottom of the frame; Established a department,
A hook portion located inside a window formed on the side surface of the cassette holder and engaged with a locking recess formed on the front side surface of the disk cassette; a cassette hook having a receiving part that protrudes toward the direction and receives the front edge of the disc cassette is rotatably provided on the side of the first sliding body, and a contact part that comes into contact with the front edge of the disc cassette; is rotatably provided on the first sliding body so as to bias a cassette ejection lever formed at the tip in the direction of ejecting the disk cassette, and the lever is rotatably provided on the first sliding body, and the lever is brought into contact with the receiving portion and the hook portion of the cassette holder is moved. A cam having an outer peripheral surface to be engaged with the window and a recess formed in a part of the outer peripheral surface is fixedly provided at the rotational center of the cassette ejection lever, and the disk cassette is inserted into the cassette holder. A loading drive unit is provided which operates by changing the operating direction in response to a detection signal from a detector and an ejection command signal, and the first transmission body and the slider of the second sliding body are driven by the loading drive unit. A first engaging protrusion is provided on one surface facing the base, and a first elongated hole that engages with the first engaging protrusion is formed on the other surface toward the bottom of the base; A second engaging protrusion is provided on one of the facing surfaces of the second transmission body driven by the loading drive unit and the cassette guide, and a second engaging protrusion is provided on the other face that engages with the second engaging protrusion. An autoloading recording and reproducing apparatus characterized in that a long hole is formed along the operating direction of the cassette guide, and a release part is provided for retracting the slider from the first transmission body by operating in one direction. Device. 3. A disk cassette in which a disk-shaped recording medium is housed in a flat disk cassette is provided, and a rotatable drive shaft directly connected to the recording medium and a recording and reproducing head are held at the bottom of the frame. a guide portion that holds a cassette holder movably in the axial direction of the drive shaft, which is biased in one direction along the direction in which the disk cassette is taken in and out; A guide portion for slidably guiding the cassette guide is formed on the frame, and a plurality of shaft portions protruding laterally are provided on one of opposing surfaces of the cassette holder and the cassette guide on the other side. A plurality of inclined grooves are formed on the surface to engage with these shaft portions, a first sliding member is provided on the cassette holder so as to be able to slide freely by biasing the first sliding member in the ejection direction of the disc cassette, and a first sliding member is provided on the bottom of the frame so as to be able to slide freely. A lock portion that engages with the first sliding body is provided, and the lock portion is located inside a window formed on a side surface of the cassette holder and engages with a locking recess formed on a front side surface of the disc cassette. a cassette hook having a hook portion and a receiving portion protruding from the base of the hook portion toward the inside of the cassette holder to receive the front edge of the disk cassette; the cassette hook is rotatable to the side of the first sliding body; a cassette ejection lever, the distal end of which is formed with a contact portion that abuts the front edge of the disk cassette, is rotatably provided on the first sliding body by biasing the lever in the ejection direction of the disk cassette; A cam having an outer circumferential surface that abuts the receiving portion and engages the hook portion with the window of the cassette holder, and a recess formed in a part of the outer circumferential surface is provided at the rotational center of the cassette ejection lever. A loading drive unit that is fixedly provided and operates by changing the operating direction in response to a detection signal from a detector that detects an insertion operation of the disk cassette into the cassette holder and an ejection command signal is provided, and is driven by the loading drive unit. A first engaging protrusion is provided on one of the facing surfaces of the first transmitting body and the second sliding body, and a first elongated hole that engages with the first engaging protrusion is provided on the other surface. is formed toward the bottom of the base,
A second engaging protrusion is provided on one of the facing surfaces of the second transmission body driven by the loading drive unit and the cassette guide, and the other face is engaged with the second engaging protrusion. a second elongated hole formed along the operating direction of the cassette guide, and a notch for disengaging the first engaging protrusion when the first sliding body and the locking portion are engaged; An autoloading device for a recording/reproducing device, characterized in that a release portion having a shape is formed continuously in the first elongated hole.