JPS5925301B2 - Cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention records information in a spiral or concentric manner on the surface of a disk-shaped recording medium, such as a flexible magnetic sheet disk, housed in a cartridge, or reproduces it. Regarding a cartridge having an opening into which a head is inserted, in particular, a flexible member j is provided in order to move a shielding member for opening and closing the opening with respect to the opening. , one end of the flexible member in the longitudinal direction is connected to the shielding member, the other end is exposed to the outside of the cartridge, and the flexible member is connected to the shielding member by a guide provided on the cartridge. It is an object of the present invention to provide a cartridge having a shielding mechanism that closes and opens the opening by reciprocating the cartridge in the longitudinal direction.

The shielding mechanism in the present invention may be one in which each shielding member 9a slides linearly, as illustrated in FIGS. 1A and b, or as illustrated in FIGS. 2A and b. The shielding member 9b may rotate and slide as shown in FIG.

In FIGS. 1 and 2, 1 is a magnetic sheet which is a disk-shaped recording medium, 3 is a center hole into which a drive unit for rotationally driving the magnetic sheet 1 can be inserted, and 4 is a hole for recording or reproducing. The oblong opening 10 into which the head can be inserted indicates a flexible member for moving the shielding member 10. In general, the above-mentioned magnetic sheets and the like, which have a high information density, become very problematic when dust, fingerprints, etc. are attached to them, or when they are mechanically damaged.

For this reason, conventionally, a magnetic sheet is stored and carried in a flexible or rigid cartridge, and when necessary, it is removed from the cartridge, or information is recorded or reproduced through an opening provided in the cartridge. A sword method was used. However, the chances of the adhesion of dust, etc. should be minimized, and for this purpose, for example, when the cartridge is loaded into a drive device for rotating the magnetic sheet, the opening is opened; When the cartridge is outside the drive device, such as during storage, transportation, etc., it is desirable to provide a shielding mechanism for the opening so that the opening is opened.

In this case, considering that the magnetic sheet is used not only by experts but also by a wide range of people, the mechanism for opening and closing the opening is required to be simple and highly reliable.

In addition, the above-mentioned cartridges are often accompanied by a large number of drive devices, and in order to store or carry them, the cartridges must be small in size, lightweight, easy to stack, easy to handle, etc. Various requests are made.

The present invention has been made in consideration of the above points and to improve the shortcomings of conventional cartridges of this type, and provides a disk-shaped recording medium that has a high density of information and can be easily handled by general users. It provides a built-in cartridge.

Hereinafter, the present invention will be explained based on illustrated embodiments.

FIG. 3 is an exploded perspective view of the cartridge of this embodiment,
4 and 5 are a sectional view taken along the line A-A in FIG. 3 and an enlarged view of the main parts. In those drawings, the inner surfaces of the lower plate 2a and the upper plate 2b, which have cartridge insertion guide steps 14a and 14b on both side edges, respectively, are formed to be the same so as to face each other. The magnetic sheet 1 has a space 1 formed by a recess 12b (not shown) of the upper plate 2b and a recess 12a of the lower plate 2a.
2, it is rotatably built in. The hub 6 has a spindle hole 8 into which a drive shaft of a drive device (not shown in this figure) is inserted, is attached to the center of the magnetic sheet 1, and rotates integrally with the magnetic sheet 1.
Further, the hub 6 has a stepped portion on its outer periphery, which is sandwiched between the upper plate 2b and the lower plate 2a, and the movement of the drive shaft in the thrust direction and the radial direction is restricted within a required range. Therefore, the magnetic sheet 1 can be held without applying excessive force to the magnetic sheet 1. The upper plate 2b and the lower plate 2a have a magnetic head (not shown) for recording/reproducing information on the surface of the magnetic seaport.
An elongated opening 4 is provided for abutting the magnetic head and for moving the magnetic head in the radial direction of the sheet.

The band-shaped flexible member 10 is made of flexible resin such as vinyl chloride, and its both side edges are connected to the upper plate 2b.
and a lower plate guide groove 13a and an upper plate guide groove 1 provided opposite to each other on the inner surface of the lower plate 2a.
3b, and is guided so as to be slidable back and forth in the longitudinal direction. The flexible member 10 is provided with a protrusion 10a at one end in the longitudinal direction, and has notches 10b at both side edges of the other end.
The shielding member 9 is engaged with the inner surfaces of the upper plate 2b and the lower plate 2a while sandwiching one end of the shielding member 9. The other end of the shielding member 9 is rotatably fitted to the outer periphery of a boss 16 provided inside the upper plate 2b and the lower plate 2a concentrically with the hub hole 3. That is, by sliding and rotating the shielding member 9 to the position of the opening 4 and shielding this, at the same time, the detection hole 5 for detecting the index hole 7 provided on the magnetic sheet 1 is also shielded. , the space 12 is in a sealed state. The guide groove 13 is formed within the cartridge to have the curvature of the outer circumference of the space 12, continues to the outside of the cartridge, and is formed on a straight line in a portion continuously exposed outside the cartridge. It is almost parallel to the side part. A stepped portion 15 is provided in a part of the linear guide groove 13, and when the shielding member 9 is in a position to completely shield the opening 4, the flexible member 10 is exposed to the outside of the cartridge. The end on the lower side is engaged with the stepped portion 15 by the elastic force of the elastic member 11.

As a result, the flexible member 10 is prevented from sliding, and the shielding member 9 is maintained at the position covering the opening 4 unless the engagement is released. Next, the operation of this embodiment will be explained.

FIG. 6a shows a case where the present cartridge is not loaded into the drive device, the end of the flexible member 10 is engaged with the stepped portion 15, and the shielding member 9 is connected to the opening 4 and the detection hole 5. It is shielded.

FIG. 6b shows the cartridge loaded into the drive device.

In this state, the release mechanism inside the drive device (not shown)
pushes the end of the flexible member 10 in the direction opposite to the direction of the elastic force of the elastic member 11, thereby releasing the engagement between the end and the stepped portion 15, and then the flexible member 10 While holding the protrusion 10a provided at the end of the flexible member 10, the flexible member 10 is slid in a direction to be pulled out of the cartridge. However, inside the cartridge, the flexible member 10 opens the opening 4 and the detection hole 5 while rotating and sliding the shielding member 9 around the rotation center of the magnetic seam opening. The sliding of the flexible member 10 may be performed using relative movement during the process of loading the cartridge into the drive device, or the release after the cartridge is loaded into the drive device. It may also be done by movement of the mechanism alone.

Further, the protrusion 10a is a means for the release mechanism to hold the flexible member 10, and instead of a protrusion, for example, a notch provided at the end of the flexible member 10 may be used. good. FIG. 6c shows a state in which the opening 4 and the detection hole 5 are completely opened, and the flexible member 10 and the shielding member 9 are completely opened.
is maintained in this state.

The process of shielding the opening 4 and the detection hole 5 is performed by the reverse operation of the above description.

Note that when the shielding is completed again, the end portion of the flexible member 10 is automatically engaged with the step portion 15 by the elastic member 11. As described above, the cartridge according to the present invention has a simple structure that completely prevents dust and fingerprints from adhering to disk-shaped recording media such as magnetic sheets, and has a shape that is very easy to handle. It has the following advantages.

[Brief explanation of the drawing]

1A, b and 2 A, b are plan views showing an example of application of the shielding member in the present invention, FIG. 3 is an exploded perspective view of one embodiment of the present invention, and FIG. A sectional view taken along the line A-A, FIG. 5 is an enlarged view of the main parts of the same embodiment, and FIGS. 6A and b
, c are operation explanatory diagrams of the same embodiment. 1... Magnetic sheet, 2a... Lower plate, 2b... Above plate, 3...
Center hole, 4... Opening, 5... Detection hole, 6... Hub, 7... Index hole, 8... Spindle hole, 9, 9a, 9
b... Shielding member, 10... Flexible member, 10a... Protrusion, 10b... Notch, 11... Elasticity Member, 12...Space, 13...Guide groove, 13a...Lower plate guide groove, 13b...Upper plate guide groove, 15... ...Danbe.

Claims (1)

[Scope of Claims] 1. A disc-shaped recording medium is rotatably housed therein, and an opening into which a head for recording or reproducing information can be inserted into the disc-shaped recording medium; a shielding member for shielding the opening when necessary; and a flexible member for moving the shielding member with respect to the opening so as to be able to open and close the opening, and one end in the longitudinal direction of the flexible member. The flexible member is coupled to the bill blocking member, the other end thereof is exposed to the outside of the cartridge, and the flexible member is guided so as to be able to reciprocate in the longitudinal direction by a guide portion provided on the cartridge. A cartridge comprising: 2. In claim 1, the flexible member is band-shaped, the guide portion is provided as a pair of grooves facing each other on the inner surface of the cartridge, and the flexible member is provided on both side edges of the flexible member. The cartridge is configured to be slidably guided by the pair of grooves. 3. In claim 2, the flexible member has a notch in a portion where it is coupled to the shielding member, and the shielding member is provided between the notch and the inner surface of the cartridge in which the groove is formed. A cartridge characterized in that the cartridge is connected to the shielding member while sandwiching a part of the member. 4. In claim 2, the groove is formed continuously from the inside of the cartridge and exposed to the outside of the cartridge, and a part of the groove exposed to the outside is provided with a stepped portion, and the stepped portion and the flexible member are engaged with each other, and the flexible member is configured to be unable to slide unless the engagement is released. 5. Claim 4 is characterized in that an elastic member is provided near the stepped portion, and the elastic member has an elastic force in a direction to push the flexible member toward the stepped portion. Cartridge. 6. The cartridge according to claim 1, wherein the other end of the flexible member is provided with a notch or a protrusion for driving the flexible member from the outside. 7. The cartridge according to claim 1, wherein the shielding member is rotatably disposed about the center of rotation of the disk-shaped member.