JPS58108003A - Door mechanism of magnetic disk storage device - Google Patents

Abstract

PURPOSE:To prevent an entry of dust and to facilitate the insertion of a cassette by providing an upper and lower couple of doors that open on hingers in the cassette insertion port in a front surface panel. CONSTITUTION:The front insertion doors 14 and 16 for a cassette 1 are closed and sliding pins 7 and 8 on both sides of a cassette storage body 4 are pressed by a spring 11 against reversely L-shaped horizontal parts of guide rails 9 and 10. As the insertion of the cassette is started, the upper and lower doors 14 and 16 come into contact with guide pawls 5 and 6 by being pressed by the cassette 1 and then the lower door 14 is pressed against the reverse surface of the cassette by a torsion spring. When the cassette 1 is further pressed in, the sliding pins 7 and 8 move along the guide rails 9 and 10 and are pressed against to reversely L-shaped vertical parts by a spring 11 to load the cassette 1. The torsion spring presses the lower door 11 against the reverse surface of the cassette 1 and the lower end of the upper door 14 against the stop surface of the cassette 1 to block an entrance 3. Therefore, an entry of dust is prevented and the insertion of the cassette 1 is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic disk storage device 1, and particularly to a door mechanism suitable for inserting a cassette and preventing dust.

While a cassette containing a flexible magnetic disk is being loaded into a magnetic disk storage device, it is necessary to be able to confirm from the outside that the cassette is loaded. Various methods have been proposed to solve this problem, but the simplest method is to allow the rear end of the cassette to slightly protrude from the device when it is loaded, and to check the rear end of the cassette from the outside.

The first WA indicates a cassette loading section of a magnetic disk storage device using the above method. That is, 1 is a cassette, 2
is the front panel, 5 is the cassette insertion hole in the front panel 0
．． 4 is a cassette storage body, 5.6 is a guide claw extending diagonally upward and diagonally downward provided at the front end of the cassette storage body, 7 and 8 are slide bins provided at both ends of the cassette 4, 9.10
11 is a guide rail that guides the slide bin 7.8, and 11 is a stop bin 12 provided with an aSS main body of a cassette storage body.
The other end of the spring is connected to a retaining pin 20 provided on the device base 19, and constantly pulls the cassette storage body 20 forward and downward. Figure 1 (a) shows the downward movement before inserting the cassette 1, and the slide bin 7.8 is connected to the guide rails 9 and 10.
It is located on the horizontal part of the inverted-shaped rail. Figure 1 (A) shows the state in which the cassette 1 is being loaded, and the slide bin 7.8 is located at the lower end of the vertical portion of the inverted rails of the guide rails 9 and 10, and the rear end of the cassette 1 is located on the front panel 2.
The cassette 1) is also slightly protruding, and you can see from the outside that cassette 1 is being loaded. The cassette has a built-in magnetic disk and has a certain thickness. The cassette 1 is used to bring the magnetic disk into contact with a magnetic head (not shown) attached to the device base 19.
has to move slightly up and down, and therefore the cassette insertion opening 5 needs to be made wider by adding the amount of movement of the cassette 1 in the up and down direction. In such a state, ■Dust enters from the cassette insertion slot 5, making it difficult to maintain mechanical accuracy.■Cassette insertion slot 5 is large, making insertion of the cassette 1 difficult.■Both before and during insertion of the cassette, There is a drawback that the inside of the device can be seen through the j-set insertion opening 5, which causes problems in terms of appearance.

SUMMARY OF THE INVENTION An object of the present invention is to provide a door mechanism for a magnetic disk storage device that eliminates the above-mentioned drawbacks of the prior art and takes into account problems in dustproofing, ease of inserting a cassette, and appearance.

In order to achieve the above purpose, a pair of upper and lower doors that open backwards are provided on the back of the front panel, and the doors come into contact with a guide claw placed at the front end of the cassette storage unit, allowing the cassette storage unit to be opened in the opposite direction. A letter-shaped inlet was formed to allow smooth insertion of the cassette, and at the same time, a pair of upper and lower doors were used to prevent dust and hide the interior before and during insertion of the cassette.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 shows an exploded perspective view of an embodiment of the door mechanism of a magnetic disk storage device of the present invention, and FIG. 5 is an explanatory diagram of its operation. 2 is the front panel, 4 is 3 cassette storage, ? +1. ? j, 10α
, 10b is a guide rail.

11g and 11h are springs, 14 is the upper door, 16 is the lower door, 17
α.

17h, lea, and 184 are door bins, and 20.21 is a twist panel. The upper door 14 is rotatably attached to the back of the front panel 2 by a door pin 174.17b, and the lower door 16 is attached to a door pin 184.18 by a screw panel 20.2.
1 Pressed against the back of m-plane panel 2 by K. Upper door 1
4 is a bent part 15 that extends diagonally downward, excluding both ends that contact the guide claw sg and 5. have Figure 5 (
α) shows the state before insertion of cassette 1, door 14.16
is closed. The slide bins 7.8, which are provided on both sides IIK of the cassette storage body 4, are pressed against the inverted horizontal portions of the guide rails by springs IIK. Figure 5 (A)
shows the cassette 1 being inserted in the middle, the upper door 14 is pushed by the cassette 1 and comes into contact with the guide pawl 5, and the lower door 16 comes into contact with the guide pawl 6, and then is pressed by the torsion spring 21 to the lower EIK of the cassette 1. Fig. 5 (C) shows that the cassette 1 is pushed further and the slide bin 7.8 is on the guide rail? , 10, and is pressed against the vertical part of the inverted letter shape by the spring 114C, showing the state in which the cassette 1 is loaded. The lower door 16 is pressed against the lower surface of the cassette 1 by the return force of the torsion spring 21, and the upper door 14 is bent
The torsion spring 2 is connected to the groove where the lower end of 5 touches the top surface of the cassette 1.
0, and close the cassette and insertion slot S. moreover,
The cassette ejecting mechanism (not shown) &C pushes up the cassette storage body 4, and slides the slide bin 7.8 onto the guide rail. , 10Kfa and rises, the lower end of the upper door 14, which had been pressed against the top of the cassette 1, slides on the top surface of the cassette 1 and moves diagonally, and then the cassette storage body moves horizontally. As a result, the state shown in Fig. S<h> is reached.

By pulling out the cassette 1, the upper door 14 and the lower door 16 are closed, resulting in the state shown in FIG. 5 (-), thereby preventing dust from entering the cassette insertion slot S.

Further, since the inside of the cassette insertion slot 5 cannot be seen, the problem of appearance is solved.

In the above embodiment, the case where the upper door 14 has a bent portion 15 is shown. It is understood that these are the same.

In this case, the position of the guide claw 50 in contact with the upper door is further at the center position 111, and when the upper door 14 and the lower door 16 are closed,
There is a problem that the top end of the lower door is visible from the outside, but there is no problem in terms of dustproofing.

Although the present invention has been described with respect to a magnetic disk storage device, it also applies to a cassette tape device and a video disk device using a disk housed in a cassette.

Needless to say, the invention can also be used for digital audio equipment and the like.

As described in detail above, according to the present invention, a door is provided in the cassette insertion slot of a magnetic disk storage device, which prevents dust from entering when not in use and gives a good external impression. By installing the doors on the top and bottom, the doors serve as an introduction port,
This has the effect of making it easier to insert a cassette into middle school.

[Brief explanation of the drawing]

Striped electrogram (g), (The phrase is a partial cross-sectional view showing the basic configuration of the loading section of the magnetic disk storage aII. Figure 2 is an implementation of the door mechanism of the magnetic disk storage device of the present invention. The exploded perspective view of the example, Figure S (6) e (') - (C) is a partial sectional view of the IS mechanism of the magnetic disk persistent storage device of the present invention. 1: Cassette, 2: Front panel 4: Cassette storage body, 5, 6: Guide claws. 14: Upper door, 15: 9 bent parts. 16: Lower door. 20. 217 Torsion spring. Continued from page 1 0 Inventor Yoshio Ouchi 1-1-1 Higashi-Taga-cho, Hitachi City, Hitachi, Ltd. Taga Factory 0 Inventor Katsuhiro Shiobara Hitachi City, Higashi-Taga-cho-Chome 1-1 Hitachi, Ltd. Taga Factory Procedures Amendment (formality) Display Patent Application No. 205546 of 1981 Name of the invention Name of the person who corrects the door mechanism of the magnetic disk storage device 11. '5101 Co., Ltd.
Production cost ■ 3 RO 1 Shigeyo Katsu
Contents of the administrator's amendment: Copying of the application and specification (no change in content).

Claims (1)

[Claims] (1) A front panel having a cassette insertion port, and a mosquito cassette insertion port arranged on the back of the front panel,
Furthermore, it consists of an upper door and an F door that are located at the rear of the front panel, and a cassette storage body that is arranged behind the upper door and the lower door and has guide claws at its front end that extend diagonally upward and downward. Door mechanism of magnetic disk storage W device. (2) The pair of upper and lower doors connect the upper S
2. A door mechanism for a magnetic disk storage device according to claim 1, wherein the door mechanism is provided on a rotary support portion of a lower door. (5) When inserting a cassette, the upper door contacts the guide claw extending diagonally upward of the sumo wrestler kit storage body, the lower door contacts the guide claw extending diagonally downward of the front and rear cassette storage body, and the upper door 3. A door mechanism for a magnetic disk storage device according to claim 1, wherein the lower door forms an inverted V-shaped inlet. (4) Claim 1, wherein the upper door has a portion that overlaps with the lower door. Section 2 also Fi#I5. ! Jlam of the magnetic disk storage device described in J. (5) A portion of the upper door that overlaps with the lower door is bent obliquely backward from a portion that contacts the upper end of the lower door. A door mechanism for a magnetic disk storage device described in Section S.