JPH0734548Y2 - Disc cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a hard disk, in particular, a disk cartridge in which a disk-shaped medium such as an optical disk, a magneto-optical disk, a magnetic disk or a floppy disk is rotatably housed in a case. is there.

[Conventional technology]

Generally, a floppy disk, a compact disk, or a video disk used in a storage device of a digital rotor, a video device, or the like is handled by a tray method or a cartridge method using a case so as not to be dusted or scratched. , Cover the pickup insertion hole and / or the drive shaft insertion hole provided in the case when not in use,
In addition, a shutter for opening and closing a slide is provided to expose and expose it during use.

[Problems to be Solved by the Invention] As a shutter opening / closing mechanism on the recording / reproducing apparatus side used in this conventional disc cartridge, a pair of pins provided via a lever stretched by a spring is used. The open / close pin is interlocked when both surfaces B and B are used, and one of them comes into contact with the slider end and the other comes off. However, when the shutter moves, the other end of the slider on the release side (slider open side) is Often, the opening / closing pin is caught and interferes with the opening / closing of the shutter, so that in order to avoid this interference phenomenon, a complicated mechanism must be adopted for moving the opening / closing pin.

The present invention is intended to properly eliminate these conventional drawbacks, and when opening and closing the shutter, there is no part that interferes with the opening and closing pin for operating the shutter, so that the opening and closing operation of the shutter can be smoothly performed. And improve reliability,
An object of the present invention is to provide a disk cartridge which can simplify the shutter opening / closing mechanism on the disk cartridge recording / reproducing apparatus side at a low cost.

[Means for solving problems]

According to the present invention, an upper plate 4 ₁ and a lower plate 4 ₂ of a shutter plate for opening and closing a pickup insertion hole 3 formed in a case 2 for rotatably accommodating a disk 1 are connected to a resin slider 4 ₃ respectively to have a substantially cross section. comprising a shutter 4 that is configured in a U-shape, in the disc cartridge, only the case before the stroke width of the shutter 4 sidewalls shutter opening and closing pin 24 is operated in contact with the respective end portions of the slider 4 ₃ of the shutter 4 vertically notch 2 _2, 2 ₂ is formed, and includes a resin slider 4 ₃ forming the notch portion 18 _2, 18 ₂ on the side wall of the slider 4 ₃ correspondingly, the resin slider 4 ₃ shutter it is provided with a chamfered portion 4 ₆ on the outer surface angle corner portion of the slider side walls 4 ₄ shutter open side that does not engage the opening and closing pin 24.

[Action]

When the cartridge case 2 having the shutter 4 is incorporated in the apparatus side, when the shutter 4 is opened, the shutter opening / closing pins 24, 24 on the recording / reproducing apparatus side are interlocked with each other so that one end abuts the slider end and the other end the slider open side. Section and shutter opening / closing pin 24
Induces the chamfered portion 4 ₆ avoid interference with the can ride on the slider 4 _3, safe operation without causing a trouble in opening and closing of the shutter 4 can be performed.

〔Example〕

An embodiment in which the present invention is applied to an optical disk cartridge will be described with reference to FIGS.
And a case 2 consisting of an upper case and a lower case for rotatably accommodating the disk 1, and a recording / reproducing pickup insertion hole 3 and a drive shaft insertion hole formed in the case 2 for opening and closing the case. Upper plate 4 _{1 of} metal (SUS) shutter plate that opens and closes the pickup insertion hole 3 with the lower surface clamped
And a shutter 4 which cross section is constructed substantially U-shape by connecting each the lower plate 4 ₂ to lubricating material having good resin slider 4 ₃ such as polyacetal resin, the opening direction leading end side of the slider 4 _3, i.e. , are the chamfer 4 ₆ provided in the corner portion of the outer surface of the slider side walls 4 ₄ shutter open side that does not engage the shutter opening and closing pin 24.

Further, a pickup insertion side walls 2 ₁ of the case 2, the slider 4 ₃ both the upper and lower surfaces notch 2 _2, 2 _2, 18 _2, 18 _2,
The provided with only the stroke width of the shutter 4, the thickness b of the pickup insertion side walls 2 ₁ Case 2 disk 1
Of equal to the thickness c, less is formed with a thickness, and the slider 4 ₃ notches or the thickness a of the forming portion equal to the thickness b of the pickup insertion side walls 2 _1, following which It is formed with a thickness. (Second, third, and fourth views and 8,9 view) In this example, is only the slider side wall 4 ₄ of the slider 4 ₃ to move the pickup area upon opening of the shutter, interference with the shutter 4 and the case 2 Since there is no portion to be inserted, the pickup insertion space of the case 2 can be increased. That is, the shutter 4
When the pickup insertion hole 3 and the drive shaft opening 12 are opened, a part of the pickup insertion side wall of the case 2 does not exist, and the pickup area is along the surface of the disc 1 so that the pickup can be used as a cartridge. When inserting
Recording and reproduction can be easily performed up to the outermost circumference of the disc 1 simply by moving the pickup horizontally.

In this case, the case 2 has notches above and below the front side wall of the case by the stroke width of the shutter 4 as shown in FIG.
2 _2, 2 ₂ also to preferably formed of slider 4 to ₃ the side wall of the notch 18 _2, 18 _2, also the chamfered portion 4 ₆ is formed by oblique or curved surface, the shutter opening and closing pin 24 Can be mounted on the front end surface of the slider, and may be provided at the open end of the slider.

Then, the shutter 4, there is provided with a rib-shaped guide pieces 18 ₁ projecting horizontally on the inner surface of the slider 4 _3, the thickness of the guide piece 18 ₁ substantially to the thickness of the disk 1 The pickup insertion side wall is equal to or smaller than the above, and the upper plate 4 ₁ and the lower plate 4 _{2 of the} slider 4 ₃ are also used.
Except for the mounting position, the slider 4 ₃ on the top and bottom surfaces notch 1
It is preferable to provide 8 ₂ and 18 ₂ and leave the side wall of the thickness dimension of the disk 1 (FIG. 4). Examples of the shutter 4, together with the slider 4 ₃ to the slider side walls 4 ₄ the opening side of the shutter 4 as the 4-6 diagram provided insertion hole 19 fit for engaging the shaft 15 to be guided, the slider side wall 4 ₄ the are deployed engaging projection 18 to be fitted to the guide portion such as a guide groove 17 formed in the case 2 interior surface on the other side via the guide piece 18 ₁ of the slider _{4. 3,} the guide the ridge if the engaging projection 18 such grooves 17 are rail may be provided so as to correspond to the engaging recesses, arrangement may be designed to slider 4 ₃ at a position chosen on the lower case or the upper case.

The slider side walls 4 _4, notched slot, for example, be those provided with a tip 4 ₅ with the insertion hole 19 of the U-shaped holes or round holes, wherein on the center line of the fitting insertion hole 19 the engaging projection 18 in which are deployed on the opposite side of the slider side wall 4 _4, are taken into consideration so as not to protrude closer to the upper or lower surface of the slider 4 _3. More configuration of the shutter 4 is provided with the engaging hole 5 and the engaging projections 6 on the slider 4 _3, engaging hole 5
Engaging piece 7 to be inserted in and engaging hole 8 to be fitted into engaging projection 6
Preparative each correspond deployed stepped portion 9 is bent at one end of the shutter plate, the engaging piece 7 abuts the horizontal surface and vertical surface of the step-like portion 9 on the inner surface and a side surface of the slider 4 ₃ Is inserted into the engaging hole 5 of the slider, and the engaging hole 8 of the shutter plate is inserted.
Is fitted into the engaging projection 6 of the slider and fixedly integrated.

In this case, the stepped portion 9 of the shutter plate is a bent end portion which has a horizontal plane and a vertical plane and which is bent in a step-like shape lower than the upper surface of the shutter plate, and is folded up vertically with respect to the horizontal plane. A pair of bending engagement pieces 7, 7 may be provided separately.

Moreover, the slider 4 ₃ engaging portion 10 of the casing 2 is provided, being adapted to slidably fitted into the guide groove 17, further case 2, its center as FIGS. 7 and 8 The hub 11 of the disk 1 is placed in the circular opening 12 formed in
And the rectangular pickup insertion hole 3 and
It has a pin insertion hole 13 and a concave portion 14 on which the shutter 4 is slidably arranged. When not in use, the shutter 4 covers the pickup insertion hole 3, and when the disc cartridge is inserted, it is slid to insert the pickup. Hole 3
It is slid to the open state and is biased so that it can be restored by the spring 16 wound around the shaft 15 of the guide shaft.

In the figure, 20 is a shaft insertion groove, and 23 is a slider guide portion provided on the inner surface of the case. Reference numeral 24 is a pin for opening and closing the shutter.

In the specific example of FIG. 10, the slider 4 _{3 of the} shutter 4 does not have a notch in the front end wall and covers the entire side wall surface of the case.
Those having a slanted chamfer 4 ₆ at one end angle corners.

Then, when the cartridge case 2 with the shutter 4 is assembled in the apparatus side, when the shutter 4 is opened, the shutter opening / closing pins 24, 24 on the recording / reproducing apparatus side are interlocked with each other so that one end abuts the slider end and the other slider slider induces the chamfered portion 4 ₆ avoid interference between the open end portion and a shutter opening and closing pin 24
4 can ride over the _3, in which can be enhanced sufficiently safely reliability and accuracy enables operation without causing trouble in the opening and closing of the shutter 4.

[Effect of device]

According to the present invention, in a disk cartridge in which shutter opening / closing pins are brought into contact with both ends of a slider of a shutter, notches are formed in the upper and lower sides of a front side wall of the case by the stroke width of the shutter, and the corresponding And a chamfered portion is provided on the outer side corner of the slider side wall on the shutter opening side that does not engage with the shutter opening / closing pin of the slider. There is also a slider as a large shutter that opens and closes even the drive shaft hole and there is no inclination when opening and closing, sliding is smooth, the shell guide part is not scraped or caught, and when the shutter is opened,
The head window can be made lower than the entire surface of the shell, and when the shutter is opened and closed, there is no part that interferes with the shutter or the case, so the pickup insertion space of the case can be enlarged, and the pickup area along the surface of the disc. When inserting the pickup into the cartridge, the mechanism can be simplified by simply moving the pickup horizontally.
When both the surface and the surface B are used, the shutter opening / closing pin can always smoothly guide the shutter opening / closing pin on the slider on the detaching side of the opening / closing pin, thus avoiding interference between the slider end and the shutter opening / closing pin. In addition, the shutter opening / closing mechanism has a simple structure to enable smooth and safe shutter operation, simplify the mechanism without making it complicated, and greatly improve reliability and accuracy. It can be easily used, and it is used safely without the risk of adverse effects on the disk or deterioration of the appearance of the case.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a front view, FIG. 3 is a perspective view with a shutter removed, FIG. 4 is a perspective view showing the shutter separated and enlarged, and FIG. FIG. 6 is a plan view of the slider portion, FIG. 6 is an enlarged vertical cross-sectional view taken along line I-I of FIG. 5, and FIG.
FIG. 8 is a perspective view when the shutter is opened, and FIG. 9 is FIG.
FIG. 10 is an enlarged vertical sectional view taken along line II-II, and FIG. 10 is a perspective view of another embodiment of the shutter in a separated state. 1 ... Disc, 2 ... Case, 2 ₁ ... Plane, 2 ₂ ... Notch, 3
... Pickup insertion hole, 4 ... Shutter, 4 ₁ ... Upper plate, 4 ₂ ...
Lower plate, 4 ₃ ... Slider, 4 ₄ ... Slider side wall, 4 ₅ ... Tip part,
4 ₆ ... Chamfered portion, 5 ... Engagement hole, 6 ... Engagement protrusion, 7 ... Engagement piece,
8 ... Engagement hole, 17 ... Guide groove, 18 ... Engagement convex part, 18 ₁ ... Guide piece, 18 ₂ ... Notch part, 19 ... Fitting insertion hole, 20 ... Shaft insertion groove, 24 ...
Shutter open / close pin.

Claims (1)

[Scope of utility model registration request] 1. A case 2 for rotatably storing a disk 1.
The upper plate 4 ₁ and the lower plate 4 ₂ of the shutter plate that opens and closes the pickup insertion hole 3 and the drive shaft insertion hole formed in the resin slider 4 ₃
In a disk cartridge which is operated by contacting the shutter opening / closing pins 24 with both ends of the slider of the shutter 4, the shutter is provided with shutters 4 each having a substantially U-shaped cross section. stroke width just above and below the casing front wall notch 2 _2, 2 ₂ is formed, and includes a resin slider 4 ₃ notch 18 _2, 18 ₂ is formed on the side wall of the slider 4 ₃ correspondingly, the disk cartridge characterized in that a chamfered portion 4 ₆ on the outer surface angle corner portion of the slider side walls 4 ₄ resin slider 4 ₃ shutter opening and closing pin 24 and does not engage the shutter opening side.