JPH0734550Y2 - Disk cartridge fixing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a device for fixing a disc cartridge for accommodating a disc as a recording medium such as an optical disc or a magnetic disc.

[Conventional technology]

Generally, a recording medium such as an optical disk or a magnetic disk is housed in a plastic disk cartridge. This disk cartridge is composed of an upper half piece and a lower half piece, and these upper and lower half pieces are superposed on each other and connected to each other so that the disk is housed therein. When the two halves are overlapped with each other, protrusions are projected from the respective halves, and bolts are inserted into the protrusions while aligning the protrusions so as to fix the both halves. Further, the bolt fastening points in the disk cartridge were one at each of the four corners.

[Problems to be solved by the device]

However, in such a cartridge fixing device, the fixing projections from both halves were simply aligned and the bolts were passed therethrough. There was a drawback that the bolt did not connect smoothly to both protrusions. In the conventional fixing device for the cartridge, the fastening is performed at each one of the four corners, so that there is a problem that the fastening strength is weak at the end portion of the recording / reproducing device insertion side.

[Means for Solving the Problems]

In the device for fixing a disk cartridge of the present invention, the upper half piece and the lower half piece are combined in the vertical direction to align the connecting protrusions formed at appropriate positions of the upper and lower half pieces, and the fixing screw is inserted into the connecting protrusion. In a device for fixing a disc cartridge in which the upper and lower halves of the disc cartridge are fixed, the coupling protrusion is a thin insertion protrusion formed on one of the upper and lower halves, and the other of the upper and lower halves is opposed to the insertion protrusion. And a screw head formed on the front side of the half piece on which the receiving projection is formed. A disk head is provided with a screw head housing hole and a partition wall for partitioning the insertion projection receiving hole and the screw head housing hole, and an insertion hole for inserting the screw shaft of the fixing screw is formed in the partition wall. A shutter urging spring for closing the opening of the cartridge is housed at one portion surrounded by a peripheral wall forming an end portion of a side edge of the ridge and a circular enclosure wall. In the vertical direction adjacent to the peripheral wall in the portion to be connected, two coupling protrusions are provided so as not to interfere with the operation of the spring when the shutter is opened and closed, and the peripheral wall forming the end of the side and the circular enclosure wall. In the other portion surrounded by and, the connecting protrusions are arranged at two lateral positions adjacent to the peripheral wall of the recording / reproducing device insertion side of the disk cartridge.

[Action]

A small-diameter insertion projection is formed on one of the upper half pieces, and a receiving projection for receiving the insertion projection is formed on the other of the upper half pieces,
The two halves are joined by inserting the tip of the insertion protrusion into the receiving protrusion, and a fixing screw is inserted from the front side of the receiving protrusion to the inserting protrusion side to join the two halves. When the connecting portion of the upper half piece is configured in this way, the insertion hole for the fixing screw formed on the receiving projection side and the screw hole for receiving the fixing screw formed on the insertion projection side are aligned and the fixing screw is perfect. And the upper and lower halves are securely joined before inserting the fixing screw.

In addition, the upper and lower halves of the disc cartridge are firmly fastened by the two coupling projections arranged vertically at the position where the spring is housed at one corner side of the recording / reproducing device insertion side, and the other half of the corner is secured. At the portion surrounded by the peripheral wall and the surrounding wall on the side of the section, the two coupling protrusions arranged laterally along the wall on the side of the recording / reproducing device insertion side firmly fasten.

The portion of the disk cartridge on the recording / reproducing device insertion side receives the urging force of a spring urging the shutter.
At the same time, the load accompanying the sliding operation of the shutter slidably mounted on the insertion side of the recording / reproducing apparatus is received.

Further, even when the disc cartridge is set in the recording / reproducing apparatus, various loads are applied from the shutter opening / closing device, the disc rotating device, the cartridge supporting device, and the like.

On the other hand, in the above-mentioned structure, the recording / reproducing apparatus insertion side portion is fastened from one corner to the central portion thereof by the two side-by-side coupling protrusions along the side portion. By improving the composition and strength of the portion that slides the shutter, the sliding movement of the shutter can be made smooth and reliable.

Further, since the upper and lower halves near the spring accommodating portion of the disc cartridge are firmly and integrally fastened by the two coupling projections as described above, the upper and lower halves are deformed to form a gap between them, which causes the shutter slide. It is possible to completely prevent that the dynamic operation is hindered or the operation of the spring is hindered.

In particular, when the disc cartridge is a large one for 5 inches, the upper and lower halves must be firmly fastened at the recording / reproducing device insertion side portion of the disc cartridge. A disk cartridge can be provided.

〔Example〕

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

1 to 3, a cartridge 1 according to the present invention has an upper half piece 2 and a lower half piece 3 associated therewith. A rotation hole 4 is formed at the center of these cartridges, and a head insertion hole 5 is provided adjacent to the rotation hole 4. The rotary hole 4 and the head insertion hole 5 can be opened and closed by a shutter 6, and the shutter 6 is biased by a spring 7. A lower portion of the shutter 6 is guided by a guide plate 8, and double writing prevention devices 9, 9 are provided below the guide plate 8.

As shown in FIG. 2, small-diameter insertion protrusions 14, 14, ... 14 are provided at appropriate positions on the upper half piece, and a screw hole 16 for receiving a fixing screw is formed in the central portion of these insertion protrusions. There is. On the other hand, as shown in FIG. 3, the insertion protrusion 14 of the lower half piece 3
15 are provided at positions corresponding to, and the receiving projections 15 are provided with receiving holes 21 for receiving the tips of the insertion projections 14. The halves are provided with peripheral walls 10, 11 around them. Further, these two half pieces 2 and 3 are provided with circular surrounding walls 12 and 13 at positions corresponding to each other.

Referring to FIG. 4 showing a cross section of the coupling protrusion J of the present invention, the insertion protrusion 14 exceeds the height of the peripheral wall 10 from the substrate 2a of the upper half piece 2 vertically to the substrate 3a of the lower half piece 3. It extends by the length and is inserted into the receiving hole 21 of the receiving projection protruding from the lower half piece 3 by the length exceeding the peripheral wall 10. The receiving projection 15 extends almost the height of the peripheral wall 11. A partition wall 20 is provided on the receiving projection 15, and an insertion hole 21a through which the shaft of the fixing screw 18 is inserted is formed in the center of the partition wall 20. On the opposite side of the receiving hole 21 of the partition wall 20, a screw head storage hole 17 for storing the screw head of the fixing screw 18 is formed, and the screw head 19 is completely hidden in the storage hole 17. Has become.

When assembling the upper half pieces 2 and 3, the insertion protrusion 1 of the upper half piece
The tip of 4 is engaged in the receiving hole 21 of the receiving projection 20 of the lower half piece 3. In this state, while rotating the fixing screw 20 from the storage hole 17 formed on the front side of the receiving projection, the screw shaft 18a is screwed into the screw hole 16 of the insertion projection through the insertion hole 21 of the partition wall. To

In this way, when the upper half piece is assembled, if it is inserted into the receiving hole of the receiving projection 20 at the tip of the inserting projection 14, the inserting hole 21 of the fixing screw of the receiving projection is simply inserted by this inserting operation. Aligned with the hole 16, this makes the insertion of the fixing screw 18 very easy. That is, as shown in FIGS. 2 and 3, the upper and lower halves of the disk cartridge are
1, 2 are firmly fastened to each other at the corner of the recording / reproducing device insertion side where the spring is housed by the two vertically arranged coupling projections 14, 14 and the other corner In the portion surrounded by the peripheral wall 10 and the surrounding wall 12 on the side, the recording medium is arranged horizontally along the wall portion on the recording / reproducing device insertion side.
Fasten firmly with two connecting protrusions.

The portion of the disk cartridge on the recording / reproducing device insertion side receives the urging force of a spring urging the shutter.
At the same time, the load accompanying the sliding operation of the shutter slidably mounted on the insertion side of the recording / reproducing apparatus is received.

Further, even when the disc cartridge is set in the recording / reproducing apparatus, various loads are applied from the shutter opening / closing device, the disc rotating device, the cartridge supporting device, and the like.

On the other hand, in the above-mentioned structure, the recording / reproducing apparatus insertion side portion is fastened from one corner to the central portion thereof by the two side-by-side coupling protrusions along the side portion. By improving the composition and strength of the portion that slides the shutter, the sliding movement of the shutter can be made smooth and reliable.

Further, since the upper and lower halves near the spring accommodating portion of the disc cartridge are firmly and integrally fastened by the two coupling projections as described above, the upper and lower halves are deformed to form a gap between them, which causes the shutter slide. It is possible to completely prevent that the dynamic operation is hindered or the operation of the spring is hindered.

In particular, when the disc cartridge is a large one for 5 inches, the upper and lower halves must be firmly fastened at the recording / reproducing device insertion side portion of the disc cartridge. A disk cartridge can be provided.

[Effect of device]

Since the present invention is configured as described above, there is an effect that it is extremely easy to assemble the upper and lower halves of the cartridge. Further, there is an effect that it is possible to provide a solid disc cartridge in which the upper and lower half pieces are firmly fastened at the recording / reproducing device insertion side portion of the disc cartridge.

[Brief description of drawings]

1 is a perspective view of a cartridge according to the present invention, FIG. 2 is a perspective view of an upper half piece, FIG. 3 is a perspective view of a lower half piece, and FIG. 4 is a vertical sectional view of a coupling protrusion of the present invention. 1 ... Cartridge, 2 ... Upper half piece, 3 ... Lower half piece, 14 ... Inserting protrusion, 15 ... Receiving protrusion, 16 ... Screw hole, 21 ... Receiving hole, 17 ... Screw head storing hole, 18 ... Fixing screw.

Claims (1)

[Scope of utility model registration request] 1. A disk cartridge in which an upper half piece and a lower half piece are combined in the vertical direction to align a coupling protrusion formed at an appropriate position of the upper and lower halves, and a fixing screw is inserted into the coupling protrusion. In a device for fixing a disc cartridge in which the upper and lower halves are fixed, the coupling protrusion is formed on one of the upper and lower halves and a thin insertion protrusion and on the other of the upper and lower halves so as to face the insertion protrusion. An insertion projection receiving hole for receiving the tip portion of the insertion projection, into which the tip portion of the insertion projection is inserted, and a screw head formed on the front side of the half piece on which the reception projection is formed are housed. The disk cart is provided with a screw head housing hole and a partition wall for partitioning the insertion projection receiving hole and the screw head housing hole, and an insertion hole through which the screw shaft of the fixing screw is inserted. A shutter urging spring for closing the opening of the cartridge is housed at one portion surrounded by a peripheral wall forming an end portion of a side edge of the ridge and a circular enclosure wall. The connecting projections are respectively provided at two vertical positions adjacent to the peripheral wall in the portion that does not interfere with the operation of the spring when the shutter is opened and closed. In the other part surrounded by the circular enclosure wall, the coupling protrusions are arranged at two lateral positions adjacent to the peripheral wall on the recording / reproducing device insertion side of the disc cartridge. A device for fixing a disk cartridge, which is characterized in that