JPH0739102Y2 - 3.5 inch optical disk cartridge - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention provides a 3.5-inch optical disk for storing a 3.5-inch optical disk.
Optical disc cartridge for inch.

[Conventional technology]

Recently, many cartridges for storing an optical disk as a recording medium have been manufactured, but since the 3.5-inch optical disk cartridge has the same shape as the conventional 3.5-inch magnetic disk cartridge, the optical disk cartridge is mistakenly magnetically recorded / reproduced / recorded. There is a problem that the magnetic disk cartridge is inserted into the optical recording / reproducing apparatus or the contrary, the magnetic disk cartridge is inserted into the optical recording / reproducing apparatus.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a 3.5-inch optical disk cartridge which is not confused with the 3.5-inch magnetic disk cartridge.

[Means for Solving the Problems]

The present invention overlaps the upper half piece 2 and the lower half piece 3 and
In the optical disc cartridge 1 that accommodates the 3.5-inch optical disc d and slidably mounts the shutter 7 that opens and closes the head insertion hole 6, the recording / reproducing apparatus insertion side tip side of the cartridge 1 and the side side of the cartridge 1 The intersecting corners are cut off obliquely to form the inclined surface 19 on the side opposite to the conventional 3.5-inch magnetic floppy disk, and when the optical disk cartridge 1 is inserted into the recording / reproducing apparatus, the position of the inclined surface 19 is changed. Is detected to make it possible to determine that the optical disk cartridge 1 is inserted instead of the magnetic disk cartridge, and the inclined surface 19 is slidably guided to the end portion of the insertion port of the recording / reproducing apparatus, so that the optical disk cartridge 1 Is inserted in an appropriate state, and the shutter 7 is provided on the tip side of the recording / reproducing apparatus on the side opposite to the inclined surface 19. Stretched to the corner portion 11, 該隅 11
Is a 3.5-inch optical disk cartridge in which a recess 10 into which an opening / closing pin 12 on the side of the recording / reproducing device is inserted is formed adjacent to.

[Action]

When the optical disk cartridge 1 is inserted into the recording / reproducing device with the front side facing upward, the left corner of the tip of the recording / reproducing device insertion side of the cartridge 1 is cut off. When a conventional 3.5-inch magnetic disk cartridge is inserted into the recording / reproducing device with the front side facing up, the right-side corner of the tip of the recording / reproducing device insertion side is cut off. Therefore, since the cut-off corners are formed on the opposite sides of the optical disk and the magnetic disk, it is possible to avoid confusion when inserting them.

Moreover, since the inclined surface 19 is slidably guided to the end of the insertion opening of the recording / reproducing apparatus, the optical disk cartridge 1 can be inserted in an appropriate state.

Further, the shutter 7 is an inclined surface on the tip side of the recording / reproducing device insertion side.
Since it extends to the corner 11 on the side opposite to 19, the contact length of the shutter 7 with the leading end side of the recording / reproducing device insertion side is correspondingly increased, and the opening / closing operation of the shutter 7 by the opening / closing pin 12 becomes smooth and sure. The shutter 7 can be opened and closed.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

Referring to FIG. 1, a 3.5-inch optical disk cartridge 1 according to the present invention has an upper half piece 2 and a lower half piece 3 superposed on the upper half piece 2. A 3.5-inch optical disk d is rotatably housed in the upper and lower halves 2 and 3. A hub 5 is provided at the center of the 3.5-inch optical disc d.
The rotary member provided on the recording / reproducing apparatus side is engaged with the hub 5, and the hub 5 is exposed to the outside through a rotary hole 4 formed in the center of the lower half piece 3. A shutter 7 is slidably engaged in the recording / reproducing apparatus insertion side of the cartridge 1 to the left and right, and this shutter 7 has a window 8 which is provided on the upper half piece 2 of the recording / reproducing apparatus side. When the read / write head is aligned with the head insertion hole 6 into which the read / write head is inserted, the surface of the optical disk d faces the head. The shutter 7 is returned by an urging spring 9. A left corner of the cartridge 1 on the insertion side of the recording / reproducing apparatus in the drawing is cut off obliquely, and an inclined surface 19 is formed on the cut-off portion. Further, on the opposite side of the inclined surface 19 from the cartridge, there is formed a square corner portion 11 having no cutout portion. A concave portion 10 is formed adjacent to the corner 11 of the prism, and the tip of an opening / closing pin 12 provided on the recording / reproducing apparatus side enters the concave portion 10 and the opening / closing pin 12 moves to the left side in the drawing. The shutter 7 slides to the left side in the figure, and the head insertion hole 6 is opened.

FIG. 1 is a perspective view of the 3.5-inch optical disk cartridge as viewed from the front side. When the cartridge is inserted into the recording / reproducing apparatus, the cartridge is inserted into the recording / reproducing apparatus in such a correct front / back positional relationship. However, the conventional 3.5-inch magnetic disk cartridge has a casing 20 as shown in FIG. 2 (a plan view of the front side), and a shutter 21 is provided on the side of this casing where the recording / reproducing device is inserted. The window 22 is formed, and the cartridge is inserted into the recording / reproducing apparatus at the front / back relation position. Further, a cut-off corner portion 23 is formed on the right side of the casing 20 in the figure, and the position of the corner portion 23 is opposite to the inclined surface 19 formed at the cut-off corner portion of the optical disk cartridge of the present invention. . Therefore, the positions of the cut-off corners of the 3.5-inch optical disk cartridge and the magnetic disk cartridge are opposite to each other, and it is effective that the operator mistakenly inserts the magnetic disk into the optical disk recording / reproducing apparatus and vice versa. Not only is it prevented, but the storage location for both cartridges is also correct.

[Effect of device]

Since the present invention is configured as described above, it is possible to effectively avoid the confusion operation between the optical disk cartridge and the magnetic disk cartridge.

Further, the inclined surface is slidably brought into contact with the end of the insertion opening of the recording / reproducing apparatus, and the optical disk cartridge is inserted in an appropriate state.

Further, since the shutter is extended to the corner on the side opposite to the inclined surface on the tip side of the recording / reproducing apparatus insertion side, the contact length of the shutter with the tip side of the recording / reproducing apparatus insertion side is increased accordingly, and the shutter by the opening / closing pin is increased. The opening / closing operation of is smooth and the shutter can be opened / closed reliably.

[Brief description of drawings]

FIG. 1 is a perspective view of an optical disk cartridge of the present invention, and FIG. 2 is a plan view of a front surface of a conventional magnetic disk cartridge. 1 ... Cartridge, 2 ... Upper half piece, 3 ... Lower half piece, 7
...... Shutter, 19 …… Sloping surface, 11 …… Square corner.

Claims (1)

[Scope of utility model registration request] 1. An upper half piece and a lower half piece are overlapped with each other
In an optical disk cartridge that accommodates a 3.5-inch optical disk and has a shutter that opens and closes the head insertion hole slidably mounted, the corners where the leading edge of the recording / playback device insertion side and the side of the cartridge intersect are slanted. In the same manner as above, and the inclined surface is formed on the side opposite to the conventional 3.5-inch magnetic floppy disk, and when the optical disk cartridge is inserted into the recording / reproducing apparatus, the position of the inclined surface is detected and the magnetic disk cartridge Without
The shutter is configured such that it is possible to determine that the optical disk cartridge has been inserted, and the slanted surface is slidably guided to the end of the insertion opening of the recording / reproducing apparatus so that the optical disk cartridge is inserted in an appropriate state. Is extended to a corner opposite to the inclined surface on the tip side of the recording / reproducing apparatus insertion side, and a recess is formed adjacent to the corner to receive an opening / closing pin on the recording / reproducing apparatus side. Optical disk cartridge for.