JP3042059B2 - Revolver for disk cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc cartridge revolver for holding a shutter of a disc cartridge open during inspection or cleaning of a disc as a recording medium.

[0002]

2. Description of the Related Art An optical disk has an opening in each of a lower half and an upper half of a disk cartridge. The optical disk is covered with a shutter to protect the opening. The shutter applies a biasing force to constantly move and bias the shutter by a torsion coil spring or the like in a direction to close the opening of the optical disc. When cleaning or inspecting the surface of a 5.25-inch magneto-optical disk, for example, an accessory is used to hold the shutter open and rotate the optical disk. This accessory is divided into two members, a member that holds the shutter with respect to the magneto-optical disk and a member that rotates. The two accessories are used to open and hold the shutter of the cartridge when inspecting and cleaning the disk.

[0003]

However, there is no accessory for opening and holding the shutter of the disk cartridge described above for a 3.5-inch magneto-optical disk. Therefore, in order to protect the opening of the optical disk, the user rotates the disk with the other hand while holding the shutter of the cartridge for closing the opening so as to be opened and fixed with, for example, one hand. Then, inspection and cleaning of the surface of the magneto-optical disk in the cartridge were performed. Inspection and cleaning of the 3.5-inch magneto-optical disk as described above are performed by very complicated and inefficient operations.

Accordingly, the present invention has been made in view of the above-mentioned circumstances, and
It is an object of the present invention to provide a disc cartridge revolver that can hold a shutter open and rotate the disc with one member for a 5-inch disc.

[0005]

A disk cartridge revolver according to the present invention is a manual revolver for rotating a disk during disk cleaning in a disk cartridge in which a center core of the disk is exposed when a shutter is opened. A rotary operation knob, a magnet that is adhered and fixed to the knob and magnetically attracts the center core of the disk, and that holds the shutter while preventing movement of the shutter in the closing direction. The above-mentioned problem is solved by providing a guide ring rotatably coupled to the knob.

[0006]

In the disc cartridge revolver according to the present invention, the shutter of the disc cartridge is held so as to be opened and fixed by a guide ring, and the knob rotatable freely with respect to the guide ring is provided between the center core portion of the disc and the disc core. The disk is freely rotated by magnetic attraction of the magnet.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a disc cartridge revolver according to the present invention will be described with reference to the drawings.

Prior to describing the specific structure of the disk cartridge revolver according to the present invention, a disk cartridge as a recording medium will be described. 3 and 4
Shows a diagram of a lower main surface and an upper main surface of a 3.5-inch cleaning cartridge, for example. The disk cartridge 20 includes a disk-shaped optical disk 21 and a cartridge 22 that rotatably stores the optical disk.

The optical disk 21 has a recording layer on at least one surface, and an information signal is written or read on the recording layer by optical or magneto-optical means, or both writing and reading are performed. It was done as such. At the center of the optical disc 21, a center core 21a for chucking the optical disc 21 by a recording and / or reproducing apparatus for recording and / or reproducing the information signal is provided.

The disk cartridge 20 comprises a pair of upper and lower upper halves 23 and lower halves 24 each having a rectangular shape sized to accommodate a disk therein. It is configured to be butt-connected. The optical disk 21 is rotatably housed in the disk cartridge 20. The lower half 24 of the disk cartridge 20 includes the optical disk 21
And a first core 21a provided at the center of the optical disk 21 and a first part for allowing a part of the signal recording surface of the optical disk 21 housed in the cartridge 20 to face outward over the inner and outer circumferences.
Opening 25 is opened. Further, a second opening 26 shown in FIG. 4 is opened in the upper half 23 at a position opposed to the first opening 25 provided in the lower half 24. Both the first opening and the second opening are provided on one side 27 of the disk cartridge 20 and on the other side 2.
It is located at the center in the left-right direction on the eight side. The first opening 25 is provided on the front surface 29 of the disc cartridge 20.
It is formed as a long hole extending from the side to the center. The first opening 29 has a disk table of a disk rotation driving device for rotating the optical disk 21 when the disk cartridge 20 is mounted on a recording and / or reproducing apparatus, and a signal recording surface of the optical disk 21. An optical pickup device for irradiating a laser beam faces. The second opening 26 is formed in a rectangular shape at a position closer to the front surface 29 of the disk cartridge 20. The magnetic head opposing the signal recording surface of the optical disc faces the second opening 26.

A shutter member 30 for closing the first opening 25 and the second opening 26 is slidably mounted on the disk cartridge 20. The shutter member 30 includes a first shutter portion 31 that closes the first opening 25 of the lower half 24, a second shutter portion 32 that closes the second opening 26 of the upper half 23, And a connecting piece 33 for connecting the first and second shutter portions 31 and 32.

As shown in FIG. 3, the first shutter portion 31 is formed to have a narrow and long rectangular shape enough to close the first opening portion 25 of the lower half 24. I have. The second shutter portion 32 is formed as a wide rectangular shape large enough to close at least the second opening portion 26. The second shutter portion 32 opens the second opening 26 when the shutter member 30 is operated to move in the direction of opening the first and second openings 25 and 26. Square notch 3
4 are provided.

The first and second shutter sections 31, 3
The connecting piece 33 for connecting the two is formed to have a width substantially equal to the thickness of the front surface 29 of the disk cartridge 20. By sliding the connecting piece 33 along the front surface 29 of the disk cartridge 20, the shutter member 30 can perform a stable sliding operation.
With this sliding operation, the disk cartridge 20
Notch recesses are provided in portions corresponding to the first and second openings 25 and 26 provided in the optical disc 21 so that the magnetic head and the optical pickup device can approach and enter the signal recording surface of the optical disk 21 in close proximity. 25a and 26a are provided respectively. Thereby, the disk cartridge 2
The thickness of the front surface 29 side of the opening 0 is made thinner at the portions facing the openings 25 and 26.

Further, the connecting piece 33 is disposed in the disk cartridge 20 and is always moved in the direction of closing the first and second openings 25 and 26, which is mounted on the disk cartridge 20. A spring locking piece 35 is provided for locking one end of a torsion coil spring or the like (not shown) to be urged. This spring retaining piece 35
Is bent inward so as to be substantially parallel to the first and second shutter portions 31 and 32, and a torsion coil spring is engaged with the distal end portion. The other end of the torsion coil spring is locked to a corner portion on the front surface 29 of the disk cartridge 20. Therefore,
The shutter member 30 having the above-described structure extends over a position where the first and second openings 25 and 26 are closed and a position where the openings 25 and 26 are opened, as indicated by an arrow C in FIG.
Moved in the direction.

The front end of the first shutter portion 31 shown in FIG. 3 is pressed and supported by a shutter pressing plate 41 attached to the outer surface of the lower half 24, and
A hinge portion pressing portion (not shown) for preventing the shutter portion 31 from rising from the disk cartridge 22 is bent.

The shutter member 30 is attached to the front surface 29 of the disk cartridge 20 against the urging force of the torsion coil spring.
A shutter opening member entry recess 36 is formed in which a shutter opening / closing pin of a shutter opening lever disposed on the recording and / or reproducing apparatus side, which is operated to move the opening sections 25 and 26 provided in the apparatus, is inserted. Have been. When the shutter member 30 closes the openings 25, 26, the shutter opening member entry recess 36 is formed in a corner on one side of the disc cartridge 20 and one side of the connecting piece 33. It is provided correspondingly.

Further, on the front surface 29 of the disk cartridge 20, the shutter member 30 is moved by a shutter opening / closing pin of the shutter opening lever, and a shutter for holding the state where the openings 25 and 26 are opened. An opening member fitting portion 37 is formed. The shutter opening member fitting portion 37 is provided with a connecting piece 33 of the shutter member 30 in a state where the openings 25 and 26 are opened.
Is formed as a notched groove in a portion where one side edge is located.

The lower half 24 of the disk cartridge 20 includes the disk cartridge 2
A pair of positioning pin engaging holes 38 and 39 are provided for engaging positioning pins for positioning the horizontal mounting position of the disk cartridge 20 when 0 is mounted on the recording and / or reproducing apparatus. Further, an erroneous recording preventing member 40 for selecting whether or not an upper signal can be written on the optical disk 21 is attached to the lower half 24 at a position close to the one positioning pin 39. Front surface 29 on one side surface 27 of the disk cartridge 20
The disk cartridge 20 is used for recording and / or
Alternatively, a cartridge pull-in pin fitting hole 42 into which a disc cartridge pull-in pin provided in the loading mechanism of the reproducing apparatus fits is formed. The disk cartridge is configured as described above.

The revolver for a disk cartridge according to the present invention will be described with reference to, for example, an external perspective view when the disk cartridge is mounted on a disk cartridge for storing a 3.5-inch optical disk shown in FIG. A disc cartridge revolver 10 for rotating the disc 21 at the time of disc cleaning in the disc cartridge 20 in which the center core portion 21a (see FIG. 2) of the disc is exposed when the shutter is opened, includes a knob 11 for manual rotation operation; A magnet 12 (see FIG. 2) which is adhered and fixed to the knob portion 11 to magnetically attract the center core portion 21a of the disk; and a shutter for preventing the shutter member 30 from moving in the closing direction (arrow B). A guide ring 13 that holds the member 30 and is rotatably coupled to the knob 11 is provided. The center core portion 21a of the disk is magnetically attracted by the magnet 12.

The guide ring 13 is provided with the knob 1
1, and has a structure having a projection 13b protruding toward the center on the inner peripheral surface of the cylindrical portion 13a, for example. The tip of the protrusion 13b of the guide ring 13 prevents the guide ring 13 from falling off and prevents the guide ring 13 from falling off by a guide groove formed by the upper surface 12a of the magnet 12 and the step 11a of the knob 11. ing.

When the shutter member 30 is opened on the disk having the above-described center core portion 21a, the center core portion 21a is opened.
2, the disc cartridge revolver 10 is disposed on the disc cartridge 20 as shown in FIG. 2, and is provided with the shutter member 30 that is pressed in the closing direction by a biasing force of a built-in torsion coil spring or the like. , The guide ring 13 with the wall of the opening 25,
By being pinched, the guide ring 13 is fixedly supported, and the shutter member 30 is held open by the guide ring 13.

The knob 11 integrally joins a part of the upper surface 12a of the magnet 12 and the inner peripheral surface 12b of the magnet 12 with an adhesive or the like. By this joining, as described above, the upper surface 12a of the magnet 12 is formed.
Then, a guide groove formed by the step 11a of the knob 11 is formed. Since the guide ring 13 is made so as not to be crushed even when the shutter member 30 is pinched in the opening 25 when the shutter member 30 is opened, the guide groove is pressed by the knob 11 being pressed by the shutter. Without rotating, the guide ring 13 can be freely rotated with respect to the fixedly supported guide ring 13.

When the disc cartridge revolver 10 is sandwiched between the openings 25, the guide ring 13 causes the disc 2 as a recording medium to be moved by the urging force.
A minute gap is formed in the vertical direction between the first surfaces. Disk 21 magnetically attracted to knob 11
Due to the small gap, the surface of the disc can be inspected and cleaned from the opening 25 by relatively freely rotating. By mounting the disk cartridge revolver configured as described above on an optical disk, it is possible to easily hold the shutter open and rotate the disk during inspection and cleaning of the surface of the optical disk.

[0024]

As is apparent from the above description, according to the disk cartridge revolver of the present invention, the knob for manual rotation operation, and the center core of the disk, which is adhesively fixed to the knob, are provided. This disk is provided with a magnet for magnetically attracting and a guide ring that holds the shutter while preventing movement of the shutter in the closing direction and is rotatably coupled to the knob. The cartridge revolver can easily hold the shutter of the disk cartridge open, and the built-in disk can be rotated with fingers to perform cleaning. By using the disc cartridge revolver, serviceability can be improved.

[Brief description of the drawings]

FIG. 1 is an external perspective view when a disc cartridge revolver according to the present invention is mounted on a disc cartridge.

FIG. 2 is a partial cross-sectional view of the disc cartridge revolver and the disc cartridge shown in FIG.

FIG. 3 is an external perspective view of the disk cartridge viewed from a lower half surface side.

FIG. 4 is an external perspective view of the disk cartridge viewed from the upper half surface side.

[Explanation of symbols]

10 Revolver for disk cartridge 11 Knob 12 Magnet 13・ ・ ・ ・ ・ ・ ・ ・ ・ Guide ring

Claims (1)

(57) [Claims] 1. A disc cartridge revolver for rotating a disc during disc cleaning in a disc cartridge in which a center core portion of the disc is exposed when a shutter is opened, a knob for manual rotation operation, and an adhesive on the knob. A magnet that is fixed and magnetically attracts the center core of the disk; and a guide ring that prevents the shutter from moving in the closing direction, holds the shutter, and is rotatably coupled to the knob. A revolver for a disk cartridge, comprising: