JPS61211888A - Disk cartridge - Google Patents

Abstract

PURPOSE:To make thin only the section of the entry passage of a head in thickness by shifting from a side surface position of a case to an internal side when a shutter is fully opened to maintain an open condition and setting the open position of the head at the inserting port side of a disk. CONSTITUTION:The step section 68 of a slider 64 is engaged with the step section 69 of the groove 66 of a lower case 51 through an end section 71 of a lever 70 by the exerting force of a spring 79. Accordingly, shutter 60 mounted on the slider 64 closes the inserting port 56 of the head of an upper case 50 and the head inserting port 57 of the lower case 51. Under such a condition, when a disk cartridge is inserted from the cartridge inserting port of a disk driving device, an operating section 77 abuts against the end section 83a of a shutter opening and closing operating member 83. Thereafter, according to a pressing force applied to the disk cartridge, the lever 70 slides in a direction as shown by an arrow B against the force of a spring 79, thereby the slider sliding in a direction shown by an arrow C and integrally therewith the shutter sliding in a direction shown by an arrow D.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disk cartridge that rotatably accommodates a disk-shaped recording medium such as a magnetic disk or an optical disk.

[Conventional technology]

FIG. 7 is an explanatory diagram schematically showing an example of a conventional disk cartridge. This disk cartridge is equipped with a spring 34 in a cartridge case 35 that engages with a protrusion 33 of a shutter 32 for opening and closing a magnetic head insertion 1131, and a disk (not shown) is provided on the front surface of the case 35. A notch 38 into which a pin 37 erected is provided at the end of a rotating member 36 provided in the drive device.

When this disk cartridge is inserted into a disk drive device (not shown) as indicated by an arrow 39, the pin 37 of the rotating member 36 engages with the notch 38, and responds to the pushing force applied to the disk cartridge. rotating member 3
6 rotates in the direction of arrow 40, and along with this, a pressing force is applied to the shutter 32 by the pin 37, and this shutter 32
moves in the direction of arrow 41, opening 37 of shutter 32
a is in a state where it fits into the magnetic head insertion port 31, that is, an open state. Thereafter, a magnetic head (not shown) enters the cartridge case 35 through the magnetic head insertion port 31, faces a magnetic disk (not shown), and performs a desired recording/reproducing operation.

However, in the conventional disk cartridge shown in FIG. 7, since the rotating member 36 is provided near the magnetic head device that holds and moves the magnetic head, there are restrictions on the arrangement of parts of the disk drive device (not shown). As a result, the structure of the disk drive device becomes complicated.

In order to solve this problem, it has been proposed to connect the flexible slider 14 and the shutter 13 as shown in the exploded perspective view of FIG. 8, and operate the operating part 14a on the side of the case. A structure is known in which the shutter 13 is moved by moving the slide back and forth, thereby opening and closing the magnetic head insertion port 15.

[Problems to be Solved by the Invention] Incidentally, in both the conventional examples shown in FIGS. 7 and 8, the shutters 32 and 13 are configured to be opened when the disk drive device is inserted, and closed when the disk drive device is removed. Although,
In either case, the shutter opening operation ends when the cartridge has been inserted. Therefore, if the head is located at the inner periphery of the disk, the shutter 32. ] 3 was not completely opened, and if the cartridge holder accidentally fell and entered the set state, there was a risk that the shutter would collide with the spatula 1' and the head would be destroyed. Furthermore, even if an attempt is made to reduce the downward stroke of the head by notching or thinning the insertion part of the spatula 1' on the AiI surface of the cartridge, the spatula 1 will still be located on the inner track of the disk as described above. In this case, even after the front end of the cartridge passes through the head, the shutter 32.13 is not fully open, resulting in a problem that the stroke of the shutter cannot be reduced.

The object of the present invention is to use the slider shown in FIG.
To provide a disk car ridge in which the front end of the cartridge is fully opened before reaching the innermost circumferential position of the head in a disk cartridge configured to perform opening and closing operations on the side of the cartridge, thereby solving the above problem. There is a particular thing.

[Means for solving problems]

In order to achieve the second object, the present invention provides a shutter that moves in a direction perpendicular to the longitudinal direction of the head insertion hole provided in a cartridge case to open and close the head insertion hole;
an operating means that is attached to the cartridge case and interlocks with the shutter; and a guide section that guides a shutter opening/closing operating member provided on the disk drive side in a direction perpendicular to the front surface of the cartridge case to open and close the shutter. In the disk cartridge equipped with the above, when the disk cartridge is inserted into the disk drive device, the operating member engages with one end of the operating means, and as the disk cartridge is inserted, the one end is moved along the guide portion. The cartridge case is moved in a direction substantially perpendicular to the front surface of the cartridge case, and in response to this movement, the shutter attached to the other end of the operating means is opened. When the shutter is fully opened, one end of the operating means is attached to the side wall of the guide section. The disk cartridge is moved inside the cartridge case from the position and disengaged from the tip of the actuating member, and with the shutter fully open, the disk cartridge can be further inserted and set in the drive section of the disk drive device. It is characterized by the fact that when a disk cartridge is set, it can always pass between the heads with the shutter fully open.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Disk force/torage according to embodiments of the present invention will be explained below based on the drawings.

1 to 6 are explanatory diagrams showing one embodiment of the present invention, in which FIG. 1 is a plan view showing the main parts of the lower case side, FIG. 2 is a partially sectional front view, and FIG. is a partially sectional side view,
Figure 4 is a plan view of the main parts showing the state when the shutter is open, Figure 5
Expanded diagram of the cartridge case
) Suzusugi? l View) H with E.

In these figures, 50 is an upper case, and 51 is a lower case, which are overlapped to form a storage space in which a disk (not shown), such as a magnetic disk, is stored inside.

As shown in FIG. 5, these upper case 50 and lower case 51 have a hole 52, 53 in the center into which a drive shaft of a disk drive device (not shown) is inserted, and four parts 54, 55 for storing disks. and substantially rectangular head insertion openings 56 and 57 that allow the entrance of a magnetic head (not shown), and the head insertion openings 56 and 57 on the outer surface located on the rear side in FIG. Recesses 5B and 59 are formed.

60 is a shutter for opening and closing the head insertion port 56.57 mentioned above, and as shown in FIG. The flat plate portions 61 and 62 are slidably fitted into the recesses 58 and 59 of the upper case 50 and lower case 51.

In addition, this Shaftaro 0 is particularly provided with tongue pieces 63 on the upper, lower, left and right portions located on the front surfaces 50a, 51a of the case 50, 51, as illustrated in FIG.

Reference numeral 64 denotes a strip-shaped slider that can slide in the direction along the front surfaces 50a and 51a of the case 50.51.
The basic shape of the cross-section of the part to which the shutter 60 is attached and which is housed in the groove 65, 66 formed in the front face 50a, 5] of part a has a protrusion 67 which protrudes in the vertical direction.
The basic shape of the cross section of the other part is a rectangular shape, and has a stepped portion 68 on the right side of FIG. 1', as shown in FIG. Lower case 51
It is possible to engage with a stepped portion 69 formed in the groove 66 of.

Note that the shutter 60 has the slider 64 connected to the case 50.51.
Although it is installed while stored inside the i'#65.66,
In this case, the protrusion 67 of the slider 64 is
flat plate part 6], 62 of the case 5
When the tongue piece 63 is pushed in the direction of the recess 58 or 59 at 0°51 and passes over the protrusion 67, installation is completed. It is regulated not to move.

Further, 70 is a lever that interlocks with the shutter 60, and is arranged, for example, on the lower case 51 side, and one end 71 is attached to a pin 72.
is connected to an end 73 of the slider 64 near the step 68 so as to be relatively rotatable, and the other end 74 is connected to the lower case 5.
The cartridge case is provided with an operating portion 77 that further protrudes from the side surface 75 of the cartridge case to the side of the cartridge case, and a projection 78 is provided in the center portion. 79 has its body held by a spring on the protrusion of the lever 70, and the other end is engaged with a protrusion 80 provided on the lower case 51, so that the lever 70 moves freely with a certain distance between the protrusion 80 and the protrusion 78 of the lever 70, Further, the slider 64 connected to the end portion 71 is always biased in the closing direction (H direction) of the shutter 60, and the slider 64 is connected to the protruding portion 67 and the front portions 50a, 51a of the case 50.51. The movement direction of the slider 64 is regulated by contacting the slider 64. This lever 70. The slider 64 and the spring 79 constitute operating means for opening and closing the shutter 60, and the operating portion 77 formed at the other end 74 of the lever 70 serves as one end of the operating means on the side surface 75 of the lower case 51. The protrusion protrudes outward from the protrusion, comes into contact with the tip of a shutter opening/closing actuating member 83 on the disk drive side (not shown), and is set to move in the B direction along a curved trajectory with the protrusion 80 as a fulcrum. At this time, a notch 75a is formed in the side surface 75 of the case 51 forming the guide portion of the actuating member 83, in which the movement range of the other end 74 of the lever 70 is cut out. The operating portion 77 can be moved further inside the cartridge case than the side surface 75 position.

Also, the slider 64 mentioned above. Pin 72 and groove 65 in upper case 50. The groove 66 of the lower case 51 connects one end 71 of the lever 70 to the front surface 5Qa, 51 of the case 50.51.
It constitutes a guide means for guiding in the v foil direction, and converts the displacement of the operating section 77 into a displacement in the opening/closing direction of the shutter 60, thereby making it possible to open/close the shutter 60.

Note that the standing portion 81 forming the groove 66 of the lower case 51
A portion 82 having a reduced height is formed in a portion located on the end 73 side of the slider 64, and the end 7I of the lever 70 crosses this portion 82 to the end of the slider 64 to the drive device. This is an operating member arranged to guide the side surface of the disk cartridge and to open and close the shutter.

In this embodiment, the slider 64, lever 70, spring 79, etc. are assembled into the lower case 51, the disk is stored in the recess 55 of the lower case 51, and the upper case 50 is inserted into the lower case 51.
In the completed state, in which the upper case 50 and the lower case 51 are integrated by overlapping the upper case 50 and the lower case 51 with screws (not shown), the shutter 60 is attached, and the biasing force of the spring 79 is applied as shown in FIG. The step 68 of the slider 64 is in a position to engage with the step 69 of the groove 66 of the lower case 51 via the end 71 of the lever 70, and therefore the shutter 60 mounted on the slider 64 is inserted into the head of the upper case 50. The mouth 56 and the head insertion port 57 of the lower case 51 are closed.

In this state, as shown by the arrow in FIG. 1, when the disk cartridge is inserted from the cartridge insertion port of the disk drive device (not shown), the tip 83a of the shutter opening/closing actuating member 83 is activated by the operation. From this point on, the lever 70 moves in the direction shown by arrow B against the force of the spring 79 in response to the pushing force applied to the disk cartridge, and as a result, the slider 6
4 slides in the direction of arrow C, and integrally with this, the shutter 60
slides in the direction of the arrow. When the shutter 60 is completely opened (Fig. 4), the lever 70 moves to the two-dot chain line position, and the bit 2 position remains as it is, so when the disk cartridge is pushed in further, the bin 72 becomes the fulcrum as shown by the solid line in Fig. 4. The operating portion 77 rotates and enters the inside of the case 51 from the side surface 75 position, and comes into contact with the side surface portion 83b of the actuating member 83. Then, by inserting the disc cartridge as it is, the disc cartridge is set in the disc drive device.

- Contrary to note F, when moving the disk cartridge in the direction of arrow E in FIG. When the cartridge 1 - ridge rises and rises by a predetermined stroke, only the disk cartridge begins to move in the E direction due to the biasing force of a spring, etc.
3b, the operating section 77 moves toward the front surface 51a of the case 51 in accordance with the relative position change between the tip 83a and the disk car 1-ridge, and the lever 70 moves toward the front surface 51a of the case 51.
9, the slider 64 slides in the direction of the arrow F, and the shutter 60 slides in the direction of the arrow H, and the head is inserted n5 as illustrated in FIG.
6゜] 1 57 is closed.

When the disk cartridge is configured as described above, immediately after the disk cartridge is inserted into the disk drive device, the operating portion 77 and the tip of the shutter opening/closing actuating member 83 start to open the shutter 60, and the disk cartridge Since the shutter 60 can be fully opened before the front surfaces 50a, 51a of the head reach the innermost track position of the head, it is possible to make the distance between the heads narrower than before.

Note that the relationship between the insertion amount of the disk cartridge and the opening degree of the shutter depends on the position of the operating section 77 and the lever 7 at the time of insertion.
Various settings can be made depending on the stroke of 0, the position of the tip 83a of the actuating member 83, the size of the shutter 60, etc.
Depending on the size of the disk cartridge and various conditions,
It is important to determine the above factors and determine the fully open position of the shutter 60.

〔Effect of the invention〕

As described above, according to the present invention, one end of the operating means for opening and closing the shutter is formed to be able to protrude and enter from the side surface of the case, and one end of the operating means is moved in a direction substantially perpendicular to the front surface of the case to open and close the shutter. In addition to opening and closing the shutter, when the shutter is fully open, it can be moved inward from the side of the case to maintain the open state.
The fully open position of the head can now be set closer to the disc insertion slot than before, so when the front end of the disc cartridge is illuminating the head position, the shutter can be left fully open, and the disc cartridge can be opened completely. If the head M
Since l@ can be narrowed, the accuracy of chucking the head can be increased, and the impact force on the disk is reduced, damage to the disk and the head can be prevented.

[Brief explanation of the drawing]

Figures 1 to 6 are for explaining the present invention in detail; Figure 1 is a plan view showing the main parts of the lower case side, Figure 2 is a partially sectional front view, and Figure 3 is a partially sectional front view. 4 is a partially sectional side view, and FIG. 4 is a plan view of the main part showing the state when the shutter is open.
Fig. 5 is a developed view of the cartridge case, Fig. 6 is a perspective view showing the entire disc cartridge, Fig. 7 is a plan view showing an example of a conventional disc cartridge and an opening/closing mechanism, and Fig. 8
The figure is an exploded perspective view showing another conventional example. 50... Upper case, 51... Lower case, 50a, 5
1a...Front, 56.57...Head insertion port, 60
...Shutter, 64...Slider, 65.66...
・Groove, 70... Lever, 71.74... End, 75
... side surface, 75a ... notch section, 77 ... operation section,
78°80...Protrusion, 79...Spring, 81...Rising portion.

Claims (1)

[Claims] A shutter that moves in a direction perpendicular to the longitudinal direction of the head insertion opening provided in the cartridge case to open and close the head insertion opening, an operating means that is attached to the cartridge case and interlocks with the shutter, and an operating means that opens and closes the shutter. In the disk cartridge, the disk cartridge is provided with a guide portion that guides a shutter opening/closing operating member provided on the disk drive side in a direction perpendicular to the front surface of the cartridge case, and the operating means engages with the shutter opening/closing operating member. A disk cartridge characterized in that one end is configured to be able to shift toward the inside of the case from the guide portion when the shutter is opened.