JPS5850676A - Magnetic sheet cassette - Google Patents

Abstract

PURPOSE:To prevent the intrusion of dust into a magnetic sheet cassette, by providing a dustproof cover which always receives a force in the closing direction and is opened when it is loaded to a magnetic disk device to the side face of a cassette. CONSTITUTION:A dustproof cover 6 which always receives the closing force is provided at the side face of a magnetic sheet cassette 1. The cover 6 is opened by interlocking a pin 7 provided at the side of a magnetic disk device and in accordance with an action by which the cassette 1 is loaded to the magnetic disk device. For instance, a dustproof cover 6 made of a synthetic resin plate with a form shown in the diagram is attached slidably on the upper and lower faces of a cassette case 1a respectively. Then a spring 11 is hooked to a pin 10 which protrudes to the upper face of the cover 6. When the cassette is loaded into the magnetic disk device, the pin 7 touches an oblique side 6c of the cover 6. Then the cover 6 is opened with pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic sheet force set H2, and more particularly to a magnetic sheet cassette equipped with a dustproof device.

A magnetic sheet cassette is a flat cassette case made of cardboard, synthetic resin, etc., in which two magnetic sheets are housed, and its general conventional structure is as shown in FIG.

That is, the magnetic sheet cassette 1 has, for example, a substantially quadrilateral shape (-
It has a cassette case 1a formed with a center hole 3 on its upper and lower surfaces. A head window 4 and index windows 5, 5 are formed, and the inside C2 is a circular hole 2a.
A magnetic sheet 2 having a magnetic sheet 2 is housed therein.

When handling the magnetic sheet force 7 1 having such a structure, the user may inadvertently touch the magnetic sheet 2 through an opening such as the center hole 3 or the head window 4, or the magnetic sheet 2 may be left unattended. l. Dust, oil, etc. may adhere to these openings, causing reading or writing errors in the magnetic disk drive C2, or significantly shortening the life of the magnetic sheet. Ta.

The present invention was made in order to eliminate the above-mentioned drawbacks of the conventional magnetic sheet cassette, and an object of the present invention is to provide a magnetic sheet cassette configured to prevent dust from entering the magnetic sheet cassette.

Figure 2 and subsequent figures are for explaining some embodiments of the present invention, and in each figure, the same part as in Figure 1 is 5 minutes (2 is given the same reference numeral,
The explanation will be omitted.

In the embodiment shown in FIGS. 2 and 3 (-), dustproof covers 6.6 are slidably attached to the upper and lower surfaces of the cassette case 1a (-) in a symmetrical state.

The dustproof cover 6.6 is made of, for example, a synthetic resin plate, and its opposing position ζ- is smaller than the radius of the center hole 3.
Further, semicircular notches 5a and 6a having a radius smaller than the radius of the circular hole 2a of the magnetic sheet 1 are formed, and protrusions 6b and 6b for closing the head window 4 are further formed. , from the base to the tip (-
Oblique sides 6c, 6c are formed which have an inclination of approximately 45 degrees toward each other. In addition, the lower surface C2 of each dustproof cover 6 can freely slide (=
Fitted protrusions 9 are formed, and a spring 11 is stretched between pins 10, 10 that protrude from the upper surface C of each dustproof cover 6.

Note that the reference numeral 7 in FIGS. 2 and 3 (-) is a guide pin provided protruding from the magnetic disk vertical placement side C.

Next (-Operation of this embodiment configured as C2 as above (2-
Next theory BI11.

Before installing the magnetic sheet cassette 1 into the magnetic disk drive side (in the second case, as shown in Fig. 5C)
Due to the tensile force (two directions), each dustproof cover 6.6 is pulled toward each other (two directions (-), the edges contact each other, and the two circular arc-shaped notches 6a are located inside the circular hole 2a of the magnetic sheet 2. However, the head window 4 and index window 5 are closed.Therefore, no matter how the user grips the magnetic sheet cassette 1, it will not come into contact with the magnetic sheet 2, and there will be no dust inside. .

When installed in a magnetic disk drive in this state, pin 7.
1 comes into contact with the oblique sides 6c, 6c of the dustproof cover 6.6, so the dustproof covers 6.6 are pushed apart from each other (2) in the direction C-- as shown in FIG. .The index window 5 is opened.

In this way, the device enters the usage state and writes and reads data to and from the magnetic rate 1.

FIGS. 4 and 5C - Embodiment C shown - A molded dust cover 12 is provided. This dustproof cover 12
consists of five slide sides 12a to 12e that are stacked on top of each other, and among these, the fourth slide sides 12a to 12d from the right end in Figure 4C2 are elongated near both ends in the longitudinal direction. An opening 19 is formed. The slide side 12a is fixed to the cassette case 1a by a pin 18, and the slide side 12b is located at the lower side (two positions) of the slide side 12a, and at both ends in the longitudinal direction and at the end (- positional sound
The protruding pin 17a is connected to the opening 19 of the slide side 12a.
Two slidable ζ are fitted inside. Also, slide side 12
A notch 12f for avoiding the pin 18 is formed at the end of b on the sliding side 12a side (=).

The slide side 12c is located on the lower side C2 of the slide side 12b, and the pins 17b formed are located near the edge of the slide side 12b side (-) and at both longitudinal ends (-) of the slide side 12b. C in opening 19: Slidably C-fitted.

The slide side 12d is located at the lower side C2 of the slide side 12c, and the pin 17c protruding from the end on the slide side 17c side and at both ends in the longitudinal direction is located at the opening 19 of the slide side 12c.
The middle C2 is slidably fitted. , also, slide side 1
Edges 2c and 12d on the pin 18 side (- indicates that a notch 12f for allowing the pin 18 to escape is formed, respectively.

The remaining slide side 12e is formed in a substantially semicircular shape,
The pins 17d protruding from the top surface are fitted into the openings 19 of the slide sides 12d, respectively.
Located below 2d (-).

In addition, a spring 16 is stretched between both ends C' in the longitudinal direction of the slide side 12e, between the protruding pin 15.15 and the protruding pin 14 on the cassette case 1a. Each of the slide sides 12a to 12e extends to apply a force in a direction C to close the center hole or head window.

At the center ζ of the arcuate portion of the sliding side 12e, a recess 13a is formed on the magnetic disk drive side (-) which engages with the protruding pin 13.

Next, the operation of this embodiment configured as described above will be explained.

Before installing the magnetic sheet cassette, set C2 to spring 1.
3 tensile force (2) Each slide side 12b to 12e has a pin 1'7a to 17d from the bottom of the slide side 12a, respectively.
is pulled out to a position regulated by the opening 191, and the center hole 3, head window 4, and index window 5 are closed.

In this state, insert the magnetic sheet cassette 1 into the magnetic disk device (
2. When installed, the pin 13 on the device side engages with the recess 13a (Y) on the slide side 12e and presses it.
~12e are pushed sequentially from the pin 13 side, and
As shown in FIG. Center hole 3° head wind 4. The index window 5 is opened and is in use.

In this way, C1 is equipped with a dustproof cover that does not come in contact with the user's fingertips and does not allow dust to enter when it is not in use, and which opens automatically when it is in use and when it is attached.

A magnetic sheet cassette can be obtained.

FIGS. 8 to 11 illustrate another embodiment of the present invention, and in this embodiment, a bellows-shaped dustproof device (4-2゛0) is provided. As shown in FIGS. 8 and 9, this dustproof cover 20 has one end 20a at the end opposite to the side where the cassette case 1a is inserted (the upper surface of the case
2 is fixed, and the bellows-like C 2 is formed to be expandable and contractible. A circular arc portion 20b is formed on the tip side of the dustproof cover 20, and a recess 26 is formed at the center of the outer periphery of the arcuate portion 20b.
There are two positions C that engage with the device side (two fixed pins 24).
1 and the tip of the case (- formed pin 23 ≦-
A spring 22 is tensioned to provide a direction in which the bellows-shaped dustproof cover 20 extends.

Next, the operation of this embodiment configured as described above will be explained.

Equipment Manual - Before installation (- as shown in Figures 8 and 9); Due to the tensile force C2 of the spring 22, the bellows-shaped dustproof cover 20 expands, with the center hole 3, head window 4,
The index window 5 is in a closed state, and the user's fingertips do not come into contact with the magnetic sheet C-, and dust does not enter. In this state, when the magnetic sheet cassette is attached to the magnetic disk device (-), the pin 24 is fitted into the recess 26 (2), so the dust-proof cover 20 is folded against the tensile force of the spring 22, as shown in Figures 10 and 11 (-). end 1 fixed as
The index hole and other openings are opened when it is pressed against the side 2a, and it is ready for use. In this way, it is possible to obtain a magnetic sheet cassette equipped with a dustproof cover that opens and closes automatically with the mounting operation of the magnetic sheet cassette.

According to the above explanation, it is clear that,
Since it is equipped with a dustproof cover that opens and closes in conjunction with the operation of attaching the magnetic sheet cassette to the device, it does not have a complicated structure and has an extremely simple structure, so that it does not come in contact with the user's fingertips and does not allow dust to enter. No magnetic sheet cassette can be provided.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a conventional structure, FIGS. 2 and 3 are plan views showing an embodiment of the present invention, showing a dustproof cover in a closed state and an open state, and FIGS. 4 to 7 are A plan view and a side view of the dustproof cover in a closed state and a plan view and a side view of the dustproof cover in an open state and FIGS. 8 to 11 show other embodiments of the present invention. FIG. 7 is a plan view and a side view of the dustproof cover in a closed state, and a plan view and a side view of the dustproof cover in an open state. 1...Magnetic sheet cassette 2...Magnetic sheet 3.
・ Center hole 4 ・ Head wind 5 ・
... Index window 6.12.20 ... Dust cover 7.13.24 ... Pin 11, 16.
22...Spring. 1111Figure 2Figure 3Figure 6Figure 7Figure 4Figure 5Figure 8232221 Figure 9Figure 10

Claims (1)

[Claims] A dustproof cover is provided on the side of the magnetic sheet cassette, which is always forced in the closing direction (=direction), and as the dustproof cover is attached to the magnetic disk drive, the magnetic disk drive side C: interlocks with the provided pin. A magnetic sheet cassette characterized in that the magnetic sheet cassette is configured such that it can be opened with a cassette.