JPS62120680A - Disk cartridge - Google Patents

Abstract

PURPOSE:To prevent a disk from the generation of damage or friction powder and to prolong the life of the disk and a head by forming a disk holding member abutted upon the disk or slightly separated from the disk to regulate the rotation and movement of the disk in a storing part. CONSTITUTION:The disk holding member 11 for regulating the rotation and movement of the disk 1 in the storing part 5 is constituted of abutting or slightly separating one end of the outer periphery 1b of the disk 1 upon/from the inner periphery 5b of the storing part 5 so as to store the disk 1 in the storing part 5. The disk holding member 11 is molded by injecting resin like a semicircular ring and provided with elasticity to hold the disk 1 in the storing part 5, press the disk 1 elastically to the in wall of the storing part 5 by slight force and absorb impact force upon the disk 1 so as to prevent the disk 1 from damage.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is used, for example, in a recording/reproducing apparatus for recording video information or document information on a disk-shaped magnetic sheet or optical disk, or for reproducing recorded information. The present invention relates to a cartridge in which a head and a rotary drive member are inserted, and in particular, to a cartridge with a shutter that allows opening and closing of an opening into which a head and a rotational drive body are inserted.

2. Description of the Related Art Conventionally, this type of cartridge has been manufactured, for example, by Utility Model Application No.
As described in No. 4879, it has a structure as shown in FIG.

That is, a head insertion hole 6b into which a head and a rotational drive body are inserted and a center hole 6a are formed on the outer surface of a cartridge housing 2 in which a disk 1 is rotatably stored in a storage portion 6.
A cartridge holder 2 is provided with a shutter 7 that can be opened and closed, and a cartridge casing 2 is provided in a recording/reproducing device.
0, the shutter 7 automatically moves due to the insertion force to close the head insertion hole 6b and the center hole 6a.
When the cartridge housing 2 is opened and the cartridge housing 2 is taken out from the cartridge holder 20, the shutter 7 is automatically moved by the urging force of the elastic member 13 and inserted into the head insertion hole 6.
b and the center hole 6a are closed again.

Problems to be Solved by the Invention However, with such a structure, the disk 1 is always rotatable or movable within the storage section 6, and the disk 1 is not stored when handling the cartridge, carrying the cartridge, or during transportation. The disk 1 may come into contact with the inner wall of the storage section 6, and the disk 1 may be damaged, or abrasion powder may be generated due to friction between the disk 1 and the inner wall of the storage section 6, and the abrasion powder may adhere to the disk 1. Alternatively, there are problems such as adhesion on the focusing lens of the head when it is attached to a recording/reproducing apparatus, which is a factor that shortens the life of the disk 1 and the head.

Therefore, the present invention restricts the rotation and movement of the disk except when the cartridge is installed in a recording/reproducing device, thereby preventing damage to the disk or generation of abrasion powder, and prolonging the life of the disk and head. The present invention aims to provide a cartridge that has a simple structure and is easy to handle.

Means for Solving the Problems The technical means of the present invention for solving the above problems is to provide a disc holding member that comes into contact with the disc or is slightly separated from the disc to restrict rotation and movement of the disc within the storage section. It is something to do.

For production The effect of this technical means is as follows.

That is, even if the cartridge is moved in any direction when handling the cartridge, carrying the cartridge, or during transportation, or even if the cartridge is held between the cartridges and intentionally swung around, the present invention provides a disk that restricts the movement of the disk. The holding member acts to restrict rotation and movement of the disk within the storage section.

As a result, the disc does not move within the storage compartment when handling the cartridge, carrying the cartridge, or during transportation, which is the case with conventional cartridges, which prevents abrasion particles from occurring within the disc storage compartment and damage to the disc. This makes it possible to always provide good disk conditions.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 4 of the accompanying drawings.

In FIG. 2, reference numeral 1 denotes a disk for recording information such as video information and document information, and a retaining hole 1a is formed in the center to engage with a drive section of a rotary drive body. Reference numeral 2 denotes a cartridge housing in which the disc 1 is rotatably housed, and is formed into a substantially rectangular parallelepiped shape by an upper half 3 and a lower half 4 made of, for example, injection molded ABS resin. Further, the upper half 3 and the lower half 4 are provided with openings 6 facing each other into which the drive section of the rotary drive body described above and a head for recording or reproducing desired information on the disk 1 can be inserted. There is.

Reference numeral 7 denotes a U-shaped shutter that allows the opening 6 to be opened and closed, and is configured to be slidable on the outer circumferential surface of the cartridge housing 2 . 9 is a longer slider that engages with the shutter 7 and drives the shutter 7 in the arrow A and arrow B directions.

Next: The internal structure of the cartridge housing 2 will be explained with reference to FIG.

Reference numeral 6 denotes a storage section that stores the disk 1 described above, and the storage section is arranged so that when the disk 1 is mounted on the rotary drive body, it can rotate freely without contacting the inner wall of the storage section 5. 5 has a large inner peripheral surface 6b. 11 is a disk holding member that restricts rotation and movement of the disk 1 within the storage section 5;
As shown in FIG. 3, one end of the disk outer periphery 1b is
The disk 1 is held in the storage portion 6 by being in contact with or slightly spaced from the inner circumferential surface 6b of the disk. The disk holding member 11 is made of resin such as polyacetal and is injection molded into a semicircular ring shape and has elasticity, and holds the disk 1 in the storage section 11 and also allows the disk 1 to be slightly attached to the inner wall of the storage section. It is configured to prevent damage to the disk 1 by elastically pressing it with force or by absorbing the impact force with the disk 1.

The disc holding member 11 is integrally formed with the slider 9, and when the slider 9 moves in the direction of the arrow, the disc holding member 11 also moves together, so the disc 1 is released from the disc holding member 11. It becomes rotatable or movable within the storage section 5. Reference numeral 5a denotes a notch that allows the disc holding member 11 to be inserted into the storage portion 6, and is formed so that it does not come into contact with the disc holding member 11 even if it moves. Reference numeral 14 denotes a guide groove for guiding the movement of the slider 9, which is continuously provided from the inside of the lower half 4 and is exposed to the outside through an opening 15a in the side surface of the lower half 4. 10
is a protrusion provided at one end of the slider 9, which is exposed to the outside through the aforementioned opening 15a and engages with a protrusion provided on a cartridge holder, which will be described later. An engagement hole 12 is provided in the center of the slider 9, into which the protrusion 8 of the shutter 7 is inserted and engaged, and the shutter 7 is configured to move in conjunction with the movement of the slider 9. Reference numeral 13 denotes an elastic member having one end hooked inside the lower half 4 and the other end hooked to the slider 9 to constantly bias the shutter 7 in the direction of closing the opening 6.

Next, the operation of the cartridge will be explained with reference to FIGS. 3 and 4.

2o is a cartridge holder into which the cartridge housing 2 can be inserted, and includes a pair of protrusions 21a facing inside;
21b is formed.

The cartridge housing 2 is attached to the cartridge holder 2.
0, the protrusion 21a.

21b begin to enter into the opening grooves 15a and 1sb, respectively, and the protrusion 10 of the slider 9 comes into contact with the protrusion 21a, thereby restricting the insertion of the protrusion 10 into the cartridge holder 20. The state is shown in FIG. At this time,
The disk 1 is held by the disk holding member 11 in contact with or slightly spaced from the inner circumferential surface 6b of the storage portion 6. When the cartridge housing 2 is further inserted, the shutter 7 begins to move in the direction indicated by the arrow because the protrusion 10 of the slider 9 is in contact with the protrusion 21a as described above. Also, at this time, the disk holding member 1
Since the disc 1 also begins to move in the direction indicated by the arrow, the restrictions on the rotation and movement of the disc 1 within the storage section 6 are relaxed. As the cartridge housing 2 is further inserted against the biasing force of the elastic member 13, the aperture 6 is exposed to the outside, and eventually the aperture 6 is exposed to the movement of the shutter 7 as shown in FIG. inserted until completely exposed. On the other hand, since the disk holding member 11 has already moved out from the storage section 6 at this time, the disk 1 can rotate and move freely within the storage section S. Therefore, although not shown, if the cartridge housing 2 is installed in a predetermined position of the recording/reproducing apparatus, the disk 1 can be rotated by the rotary drive body, and the head can also be inserted into the opening 6. Therefore, desired information can be recorded and reproduced.

When the cartridge housing 2 is taken out from the cartridge holder 20, the reverse operation is performed, and the shutter 7 is automatically returned by the biasing force of the elastic member 13 to close the opening 6 as shown in FIG. It gets blocked. In addition, the disk holding member 11 similarly returns to its original state, and the disk 1 is brought into contact with or slightly separated from the inner circumferential surface 5b of the storage portion 5 again, thereby regulating the rotation and movement of the disk 1.

Effects of the Invention As is clear from the invention described above, the present invention regulates the rotation and movement of the disk except when the cartridge housing is installed in the recording/reproducing device, and restricts the rotation and movement of the disk when the cartridge housing is installed in the recording/reproducing device. In conjunction with the mounting operation of the disc housing, the rotation and movement restrictions on the disc are released, and desired information can be recorded and reproduced, and the intended purpose can be fully achieved.

Although the disk holding member is configured to restrict the disk in the radial direction, it may be configured to restrict the disk in the thickness direction or in both the radial and thickness directions. Moreover, the disk holding member is not limited to the slider, and the same effect can be obtained even if it is formed integrally with the shutter.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a disk cartridge according to an embodiment of the present invention, FIG. 2 is an external perspective view of the cartridge, FIGS. 3 and 4 are sieve views showing the operating state of the cartridge, FIG. 6 is a sectional view showing a conventional example. 1...Disc, 2...Cartridge housing, 6...Storage section, 6...Opening hole, 7
...Shutter, 9...Slider,
11... Disk holding member. Name of agent: Patent attorney Toshio Nakao and 1 other person f-
--Desk f disk 5-qzlli'tp q-・Slider 1f---fiZ'BhF3#Wn Fig. 3 Fig. 5

Claims (3)

[Claims] (1) a cartridge housing having an opening into which a head and a rotary drive body are inserted, and a housing portion which rotatably stores a disk; a shutter slidably attached to the cartridge housing; a slider that engages with the shutter and drives the shutter to a position where the opening is opened or closed; A disc cartridge characterized by comprising a disc holding member that restricts rotation and movement. (2) The disk cartridge according to claim 1, wherein the disk holding member is integrally formed with the slider. (3) The disk cartridge according to claim 1 or 2, wherein the disk holding member is configured to be elastic.