JPH0762939B2 - Disk drive device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention is a disk drive suitable for a disk recording / reproducing apparatus for audio equipment for optically recording / reproducing a signal on a disk, OA equipment, etc. Regarding the device.

(Prior Art) In recent years, development of an erasable optical disc recording / reproducing apparatus for optically recording / reproducing information signals on / from discs for audio equipment and OA equipment has been promoted.

As a disc drive device in such an optical disc recording / reproducing apparatus, the following one has been developed.

FIG. 5 shows an example of such a disk drive device. In FIG. 5, reference numeral 1 denotes the disk drive device main body.
The opening 1a is formed. Further, inside the disc drive device main body 1, there is provided a cartridge support frame 3 for supporting a cartridge case 2 which is inserted from the opening 1a and rotatably accommodates the disc 2a. Sliding protrusions 4 are formed on both side surfaces of the cartridge support frame 3. On both sides of the cartridge support frame 3, the sliding projections 4 are guided so that the cartridge support frame 3 is brought into a disc drive state in which the disc 2a of the cartridge 2 is mounted on the turntable 5 from the disc non-drive state. Guide groove 6a
A pair of loading cam plates 6 and 6 formed with are formed and one end of each of the loading cam plates 6 and 6 is connected to a connecting rod 7. This connecting rod 7
One end of each of rotatable arms 8 and 8 is connected to, and the other end of each of the arms 8 and 8 is fixed to a loading operation transmission shaft 9 that is rotatably provided. The loading operation transmission shaft 9 is provided with a transmission lever 10 that transmits rotation so as to operate the arms 8 and 8. An operating lever 12 fixed to one end side of the loading operation shaft 11 comes into contact with the transmission lever 10, and a loading knob 13 is fixed to the other end side of the loading operation shaft 11. The loading knob 13 is projected toward the opening 1a side of the disk drive device body 1. In the figure, 14 is a disc
2a is a head device for recording / reproducing.

The operation of the disk drive device thus configured will be described with reference to FIGS. 5 and 6.

First, the cartridge case 2 is inserted through the opening 1a of the disk drive device body 1 and supported by the cartridge support frame 3. Next, move the loading knob 13 to the arrow A
Rotate in the direction. As a result, the loading operation shaft 11
Rotates, and the operating lever 12 pushes up the transmission lever 10.
Further, the arms 8, 8 press the connecting rod 7, and the loading cam plates 6, 6 move in the direction of arrow B. Then, the sliding protrusion 4 of the cartridge support frame 3 slides along the guide groove 6a of the loading cam plates 6 and 6, the cartridge support frame 3 descends in the direction of arrow C, and is shown by the one-dot chain line in FIG. As described above, the disc 2a of the cartridge case 2 is mounted on the turntable 5. After that, the turntable 5 is driven,
Recording and reproduction of the disk 2a is performed by the head device 14.

When ejecting the cartridge case 2, the loading knob 13 is rotated in the direction of arrow D to push down the transmission lever 10 of the loading operation transmission shaft 9 by the operation lever 12, whereby the loading cam plates 6 and 6 are released.
Moves in the direction of arrow E, the sliding protrusion 4 of the cartridge support frame 3 moves along the guide groove 6a, and the cartridge support frame 3 rises in the direction of arrow F and returns to the original position.

(Problems to be Solved by the Invention) By the way, in this disc drive device, if the loading knob 13 is mistakenly rotated in the direction of arrow D while the head device is recording and reproducing the disc, the cartridge There is a risk that the support frame 3 will rise and the disc 2a will be ejected away from the turntable 5 and the recording / reproducing of the disc will be interrupted. Especially, when recording on the disc, the recording signal is There was a risk of not being saved in.

The present invention is intended to solve the above-mentioned problems and has a simple structure and can effectively prevent the disc from being ejected when the disc is being recorded / reproduced. It is an object of the present invention to provide a disk drive device that can significantly improve reliability.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention places a disk housed in a cartridge case into a drive state by mounting the disk on a turntable. The loading mechanism that moves between the first position and the second position that is in the non-driving state, and the rotation operation is possible from the outside of the apparatus, and the rotation operation is used as power for operating the loading mechanism. To the loading operation shaft, a locking lever supported by the loading operation shaft and rotating coaxially with the loading operation shaft, and a reciprocating rotary motion freely supported in cooperation with the locking lever within a predetermined angle range. When the lock arm and the disc are in the first position, the lock arm is magnetically attached to the first rotation position within the predetermined angular range. And locking means for locking, when the disk is in said second position, the second of said locking arm which is localized by the contact with the locking lever
Urging means for rotating and urging the lock arm in a direction leading from the rotational position to the first rotational position.

(Operation) With the above-mentioned means, the present invention can effectively prevent the disc from being ejected with a simple configuration and when the disc is being recorded / reproduced.
The reliability of the disk drive device can be greatly improved.

(Example) Hereinafter, one example of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a disk drive device according to an embodiment of the present invention, and FIG. 2 is an enlarged perspective view of a main part of FIG. In these figures, the parts common to those in FIGS. 5 and 6 are designated by the same reference numerals and the description thereof will be omitted.

In these drawings, in this embodiment, a lock lever 21 is fixed near the operation lever 12 of the loading operation shaft 11. A lock arm 22 is rotatably arranged near the lock lever 21, and a stopper plate 23 of the lock arm 22 is brought into sliding contact with the lock lever 21. The lock arm 22 is biased toward the lock lever 21 by a biasing member 24. Lock arm
A ferromagnetic body 25 is rotatably provided on the body 22.

Further, in the vicinity of the lock arm 22, at a predetermined distance from the ferromagnetic body 25, the loading knob 13 is rotated, the lock lever 21 is rotated, and the lock arm 22 is moved to the lock lever 21 side by the urging member 24. An electromagnet 26, which is energized when the turntable 5 is rotating, is provided at a position where it abuts on the ferromagnetic body 25.

The operation of the disk drive device configured as described above will be described with reference to FIGS.

First, the cartridge case 2 is mounted in the cartridge support frame 3 through the opening 1a of the disk drive device body 1. Next, the loading knob 13 is rotated in the direction of arrow A. As a result, the operating lever 12 rotates and pushes up the transmission lever 10 of the loading operation transmission shaft 9. The connecting rod 7 is pressed by the arms 8 and 8, and the loading cam plate 6 is pressed.
Moves in the direction of arrow B. As a result, the sliding protrusion 4 of the cartridge support frame 3 is guided by the guide groove 6a of the loading cam plate 6.
The cartridge supporting frame 3 descends in the direction of arrow C, and the disc 2a of the cartridge case 2 is mounted on the turntable 5.

At this time, at the same time as the above operation, the loading operation shaft 11 is rotated in the direction of the arrow A from the state of FIGS. 2 and 3, so that the lock lever 21 is rotated to slide on the surface of the stopper plate 23. To do. When the lock lever 2 passes the surface of the stopper plate 23, the lock arm 22 is pulled toward the loading operation shaft 11 side by the biasing member 24 and the ferromagnetic body 25 and the electromagnet 26 come into contact with each other, as shown in FIG. .

After that, the turntable 5 is driven, and the head device 14 records and reproduces the disk 2a. When the turntable 5 is driven, the electromagnet 26 is energized and the ferromagnetic body 25 and the electromagnet 26 are magnetically attached.

Therefore, while the turntable 5 is driven,
As shown in FIG. 4, even if the loading knob 13 is carelessly rotated in the direction of the arrow D, the lock lever 21 comes into contact with the stopper plate 23 and is locked.

In this embodiment, with the configuration described above, it is possible to effectively prevent the disc from being ejected when the disc is being recorded / reproduced, and it is possible to greatly improve the reliability of the disc drive device. it can.

In the above embodiment, the lock arm 22 has a ferromagnetic material 25.
The example in which the electromagnet 26 is provided at a position spaced apart from the ferromagnetic body 25 by a predetermined distance has been described.
It is needless to say that an electromagnet may be provided at 22 and a ferromagnetic material may be provided at a position spaced from the electromagnet by a predetermined distance.

[Effects of the Invention] As described above, the disk drive device of the present invention is
With a simple structure, it is possible to effectively prevent the disc from being ejected while the disc is being recorded or reproduced. Therefore, the reliability and safety of the disk drive device can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of a disk drive device according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view showing an essential part of FIG. 1, and FIGS. FIG. 5 is a diagram for explaining the operation of the figure, FIG. 5 is a perspective view showing a part of an example of the disk drive device, and FIG. 6 is a diagram for explaining the loading state of FIG. 2 …… Cartridge case 2a …… Disk 3 …… Cartridge support frame 11 …… Loading operating shaft 12 …… Operating lever 13 …… Loading knob 21 …… Lock lever 22 …… Lock arm 23 …… Stopper plate 24 …… Member 25 ... Ferromagnet 26 ... Electromagnet

Claims (3)

[Claims] 1. A loading mechanism for moving a disk accommodated in a cartridge case between a first position in which the disk is mounted on a turntable and is in a driven state and a second position in which the disk is not driven. And a loading operation shaft that can be rotated from the outside of the apparatus and that transmits the rotation operation to the loading mechanism as a power for operating the loading mechanism, and is supported by the loading operation shaft and coaxial with the loading operation shaft. A rotating lock lever, a lock arm which is interlocked with the lock lever and is supported for reciprocating rotational movement within a predetermined angle range, and when the disc is in the first position, the lock arm and the magnetic Locking means for wearing and locking in a first rotational position within the predetermined angular range; and when the disc is in the second position, A biasing means for rotationally biasing the lock arm in a direction leading from the second rotation position of the lock arm to the first rotation position, which is located by contact with the lock lever. Disk drive device. 2. The lock means according to claim 1, wherein the lock means comprises a magnetic body provided on the lock arm and an electromagnet that is energized when the turntable is driven. Disk drive device. 3. A loading mechanism for loading and unloading a disk on and from a turntable, and a rotation operation that can be performed from the outside of the device, and the rotation operation is transmitted to the loading mechanism as power for operating the loading mechanism. The operating means, a magnetic body provided in the loading operating means, and an electromagnet that energizes when the turntable is driven and magnetically adheres to the magnetic body to lock the rotation of the loading operating means. A disk drive device characterized in that