JPS60243850A - Loading device of disk cassette - Google Patents

Abstract

PURPOSE:To prevent deviation in position of an engaging hole from a cassette positioning pin when a disk cassette is inserted, by providing a cassette inclination controlling means to a cassette holder. CONSTITUTION:When a disk cassette 1 is horizontally inserted into a cassette holder 2 in the direction shown by the arrow (a), the right side face 1c' of the front end section 1a of the cassette 1 contacts with a cassette inclination controlling means 32 at the right side. Moreover, the left side face 1c'' of the rear end section 1b contacts with another cassette inclination controlling means 33 at the left side and the cassette 1 is prevented from inclining in the direction shwon by the arrow (f) to an inserting center line X by the pushing force F1 in the direction shown by the arrow (e) produced by the return spring 8 of a shutter opening/closing lever 5 and the return spring 21 of a cassette insertion detecting plate 20. Therefore, an engaging hole 25 smoothly slips down the slope of the conical pin section 23a of a cassette positioning pin 23 and the lower half 14 of the cassette 1 is properly loaded on a horizontal stepped section 23b in horizontal position.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a shutter for opening and closing a head insertion port of a micro floppy disk cassette, etc., which can freely reciprocate between a cassette insertion position and a cassette mounting position. a cassette holder, a shutter opening/closing lever rotatably supported by the cassette holder and biased in the cassette ejection direction by a return spring, and a plurality of cassette positioning pins provided at the cassette mounting position of the cassette holder. has.

By inserting the disc cassette into the cassette holder that has been moved back to the cassette insertion position, the engager provided at the tip of the shutter opening/closing lever is engaged with one end of the shutter of the disc cassette, and this shutter opening/closing lever is activated. The shutter is opened by moving it forward in the cassette insertion direction against the return spring, and when the insertion of the disk cassette into the cassette holder is completed, the cassette holder is moved forward to the cassette mounting position and the disk cassette is placed on the bottom of the cassette holder. The present invention relates to a disk cassette mounting device configured to engage and position a plurality of cassette positioning pins through a plurality of engagement holes provided therein.

[Backweight technology and its problems]

First, from Figures 1A to 4B, the conventional micro-
A mounting device for a floppy disk cassette (hereinafter simply referred to as a disk cassette) J will be explained.

When installing the disk cassette, the disk cassette is inserted horizontally from the direction of arrow a in the figure into the cassette holder 2, which has been moved back to the cassette insertion position shown in Figure i2A. At this time, the disk/l) set 1 is moved to the position Pi of the front end opening 3 of the cassette holder 2 shown in
When the disk cassette If) is inserted in the direction of the arrow a at position P2-j from 6 is engaged. As the disc cassette ) is subsequently inserted into the cassette holder 2 in the direction of the arrow a, the engagement element 6 is pushed in the direction of the arrow a by the front edge of the disc cassette.

The shutter opening/closing lever 5 is connected to the top plate 2 of the cassette holder 2.
]BI from the position in Fig. 1A centering on the fulcrum pin 7 on a
It returns to the position of iJ in the direction of arrow FJ]b and is rotated against the spring 8. At this time, as shown in FIG. 1B, the engaging element 6 pushes one end 4a of the shutter 4 in the direction of arrow C, and the shutter 4 is returned in the same direction and slid against the spring 9 to open the lid. When the front end *Ja of the disk cassette 1 is inserted in the direction of the arrow a at the insertion completion position P3 where the front end *Ja of the disk cassette 1 comes into contact with the stopper 11 of the cassette holder 2 and is stopped.

A pair of upper and lower window holes J2 provided in the shutter 4 are placed above the pair of upper and lower head and pad insertion openings 15 provided at the bottom of the disk cassette 1 at /'-7]3°14 (see Figure 2A). Stacked head and pad insertion slot]
5 is fully opened.

At the moment when the head and pad insertion opening 15 are completely opened, the engaging member 6 of the shutter opening/closing lever 5 falls into the recess j6 of the front edge 1a of the disc caser and is locked therein.

On the other hand, just before the insertion of the disk cassette 1 is completed,
The cassette insertion detection plate 2o, which is attached to one side of the cassette insertion detection plate 2o, which is vertically carved on the shutter 18, is marked by an arrow by one corner 1b of the front +1 edge 1a911J. By being pushed in the direction a, the cassette detection plate 2o is returned in the direction of the arrow a and slid against the spring 2 from the position P4 in FIG. 1A to the insertion completion position P3 shown in FIG. Completion of insertion of the disk cassette 1 is mechanically detected.

Then, at the next moment, the cassette holder elevating drive mechanism (not shown) is driven downward, and the pair of left and right holder support levers 22, which are attached to the single holder support plate J9 and support the cassette holder 2, are driven downward. , cassette holder 2
is vertically lowered in the direction of arrow d from the cassette insertion position shown in FIG. 2A to the cassette installation position shown in FIG. Cassette positioning pin 23゜24
The four corners of the bottom surface of the disk cassette 1 are mounted horizontally on top. At this time, a pair of left and right engagement holes 2 provided on the front end side of the lower half J4, which is the bottom surface of the disk cassette 1,
5 is engaged with the conical pin $23a, IIC at the upper end of the cassette positioning pin 23 of a pair of five stones, and the horizontal W part of the play area is placed 23hl-r÷base f-, and the rear end side of the lower half J4 is The cassette positioning bin 24 is placed horizontally on the horizontal toe ends 24a of a pair of left and right cassette positioning bins 24. At this time, the disk cassette is pressed and fixed onto the four cassette positioning pins 23 and 24 by the spring force of the leaf spring 26 fixed on the top plate 2a of the cassette holder 2.

Furthermore, upon completion of the loading operation of one or more disc cassettes 1, the discs (micro-70 discs) stored in the upper and lower halves 13 and 14 of the disc cassette 1 are placed on the turntable (none of which is shown). along with being mounted horizontally.

A head and a pad (both not shown) are inserted into the head and pad insertion opening 15 and brought into contact with the disk. Thereafter, the disk is rotationally driven by the turntable, and the head runs around the disk in the radial direction to perform desired recording or reproduction.

Note that the ejection operation of the disk cassette 1 after recording or reproduction is performed by the reverse operation of the above-mentioned loading operation.

However, in the conventional disk cassette mounting apparatus constructed and operated as described above, the following problems occur.

First, considering the molding tolerance of the outer dimensions of the upper and lower halves 13 and 14 of the disk cassette 1 molded from synthetic resin, in order to smoothly insert and remove the disk cassette into and out of the cassette holder 2, As shown in Figure 3, it is necessary to set the inward dimensions of both the left and right side plates 2b of the cassette holder 2 to a size large enough to accommodate the left width B of the disc cassette.
A gap 28 is always created between the left and right side ICs of the disk cassette inserted therein and the left and right side plates 2b of the cassette holder 2.

On the other hand, as shown in FIG. 3 (in a state in which the disk cassette 1 has been completely inserted into the cassette holder 2I73).

The engagement element 6 of the shutter opening/closing lever 5, which is simultaneously biased in the direction of the arrow in FIG. 1B by the return spring 8 and the return spring 2, is biased to slide in the direction of the arrow a' in FIG. cassette insertion detection plate 20)
A pressing force F1 in the direction of arrow e, which is the cassette ejection direction, is applied to one corner of the front end Ja side of ] bs.

As a result, the gap 1' in the cassette holder 2! Due to the presence of j28, the disk cassette inserted into the cassette holder 2 is inclined in the direction of the arrow f with respect to the cassette insertion center line X of the cassette holder 20, as shown in FIG. Note that Y indicates the center line of the disk cassette 1 inclined with respect to the cassette insertion center IVilX.

When inserting the disk cassette into the Naori set holder 2, press the rear edge of the disk cassette in the direction of the arrow a with the finger 29, as shown in Figure 83. When pushing e in the direction of the arrow a, as shown by the chain line (one corner of the rear edge of the disk cassette 1 d), the inclination of the disk cassette 1 in the direction of the arrow f is small, but as shown by the solid line in FIG. Trailing edge of [Yakudaku Disfucasella]] d
[Other corner] fY arrow When the arrows are in the same direction.

The inclination of the disc cassette in the direction of the arrow f is remarkable.

As mentioned above, at the moment when the insertion of the disk cassette into the cassette holder 2 is completed, the disk cassette falls vertically in the direction of arrow d from the cassette insertion position shown in FIG. 2A to the cassette installation position shown in FIG. 2B. Then, the disk cassette 1 is mounted horizontally on the four cassette positioning bins 23 and 24, but as shown in FIG. Insert the cassette into the cassette installation position while it is tilted (
When the disc cassette 1 is lowered (lowered), the engagement of both image matching holes 25 with the single cassette positioning bin 23 becomes incomplete, and the disk cassette 1 is no longer mounted horizontally on the four cassette positioning bins 23 and 24.

That is, as shown in Fig. M3, the cassette holder 2 is tilted in the direction of the arrow f (and the center of the two-side image alignment hole 25 is displaced from the center of the two-force set positioning bin 23, When the disk cassette is mounted in the cassette mounting position while being tilted, the engagement hole 25 is engaged with the middle of the slope of the conical bin portion 23a of the cassette positioning bin 230, as shown by the solid line in FIG. 4A. At this time, the pressing force F by the return springs 8, 21, etc. indicated by dotted lines in FIG. 4A]
If not, the slope of the conical pin 1li23a will generate a horizontal component force F3 against the downward pressing force F2 of the disk cassette 1, and the disk cassette 1 will move in the direction of the arrow f' as shown by the dotted line in FIG. While rotating, the engagement hole 25 smoothly slides down the slope of the conical bottle portion 23a. As a result, the inclination of the disc cassette ] in the cassette holder 2 in the direction of the arrow f is corrected, and the center line Y of the disc cassette shown in FIG.
0 cassette is correctly stacked on the insertion center line X,
As shown by the one-dot chain line in FIG.
It will be correctly installed horizontally on top b.

However, at this time, as shown in Fig. 4B, if a pressing force F1 is applied by the return spring 8.21, etc., the pressing force Fl is a force that cancels out the horizontal component force F3 with respect to the downward pressing force F2. As a result, the disk cassette 1 cannot rotate in the direction of the arrow f in FIG.
30 stops in the middle of the 8 sides of the conical bottle part 23a, and the lower half 4 floats above the horizontal stepped part 23b.

In addition, disk cassette 1'! ¥: The downward pressing force F2 is generated by the plate spring 26, etc., and is not a very large force. Based on the pressing force F2, the horizontal direction generated by the slope of the conical pin portion 23a is generated. Since the component force F3 is very small compared to the pressing force F1 caused by the return spring 8.21, etc., as long as the pressing force Fl acts on the disk cassette 1, the force F3 is as shown by the solid line in FIG. 4B (the engaging hole 25 stops in the middle of the slope of the conical pin part 23a.
5. As shown in FIG. 4B (if the lower half 14 floats above the horizontal step 23b of the cassette positioning bin 23, the disk cassette 1 will not be installed horizontally and accurately at the predetermined height position of the cassette installation position). That is, the rear end edge 1dlljl of the disk cassette 1 is brought into contact with the upper end 24a of the double-force set positioning bin 24, and the front end edge 1a side of the disk cassette 1 is placed above the horizontal step 23b of the double-force set positioning bin 23. The disk cassette 1 is tilted IPr in a floating state.As a result, the head may not be aligned with the disk in the disk cassette 1, causing recording or playback to be interrupted (or the rotation drive within the disk cassette 1 may be interrupted). The disk being used may be damaged.
A fatal flaw will occur.

[Purpose of the invention]

The present invention has been invented to correct the above-mentioned defects, and the disk cassette inserted into the cassette holder is moved against the cassette insertion center line of the cassette holder by the spring force of the return spring of the shutter opening/closing lever. By tilting to one side, it is possible to prevent misalignment of the plurality of engagement holes on the bottom surface of the disk cassette relative to the plurality of cassette positioning bins.

[Summary of the invention]

The present invention provides a cassette tilt regulating means for regulating the disc cassette inserted into the cassette holder from tilting to one side with respect to the cassette insertion center line of the cassette holder due to the spring force of the return spring of the shutter opening/closing lever. When the disk cassette is completely inserted into the cassette holder, the upper 1C inclination of the disk cassette is restricted to prevent positional deviation of the plurality of retaining holes with respect to the plurality of cassette positioning bins.
This is a disk cassette mounting device configured to prevent this.

〔Example〕

An embodiment in which the present invention is applied to a mounting device for a micro floppy disk cassette (hereinafter simply referred to as a disk cassette) will be explained below with reference to FIGS. 5 to 8.
Ru. Note that the same structural parts as those of the conventional example shown in FIGS. 1A to 4B are given the same reference numerals, and the explanation thereof will be omitted.

First, FIGS. 5 and 6 show the J-th embodiment, in which a pair of cassette tilt regulating means 32.3
3 is constituted by a pair of bottles fixed on the chassis 18.

That is, when the disk cassette 1 is horizontally inserted into the cassette holder 2 from the direction of arrow a as shown in FIG.
[Right side surface on the front edge 1a side of the disk cassette 1 ]C is brought into contact with the right cassette tilt regulating means 32, and the left side IC of the rear end IR1bIII1 of the disk cassette 1 is brought into contact with the left cassette tilt regulating means 33. be done. As a result, as mentioned above, the return spring 8 of the shutter opening/closing lever 5
and arrow e due to the return spring 2 of the cassette insertion detection plate 20.
Due to the pressing force Fl in the direction, the disk cassette 1 moves toward the arrow f with respect to the cassette insertion center line X of the cassette holder.
tilting in the direction is prevented. Therefore, the positional deviation of both image matching holes 25 with respect to the single cassette positioning bin 23 is prevented, and as shown by the dashed line in FIG. 4A, the engagement holes 25
The cassette positioning bin 230 smoothly slides down the slope of the conical bin 923a, and the lower half J4 is correctly mounted horizontally on the horizontal stepped portion 23b.

According to the present invention, as shown in FIG. Even if the size is set to a large size with plenty of room, the arrow Eflf of the disc cassette in the cassette holder 2
Since the disk cassette 1 can be prevented from being tilted in the direction, the disk cassette 1 can be inserted into and removed from the cassette holder 2 smoothly.

Next, FIG. 7 shows a second embodiment, in which a pair of cassette inclination regulating means 34 and 35 are provided inside the front and rear ends of the left and right side plates 2b, 2b of the cassette holder 2. It is composed of a pair of protrusions'),! ]
The same effects as in the embodiment are achieved.

Next, FIG. 8 shows a third embodiment, in which a pair of cassette inclination regulating means 36 and 37 are constituted by the front and rear ends of the left and right side plates 2b, 2b of the cassette holder 2. Yes.

The two side plates 2b' and 2b are inclined parallel to each other at an arbitrary angle of 0 with respect to the center X of the cassette holder 20 for insertion. In this case as well, the same effects as in the embodiment 1 are achieved.

Although the embodiments of the present invention have been described above, various modifications can be made based on the technical idea of the present invention.

For example, the cassette inclination regulating means 32 to 37 may be of any type other than the bottles or protrusions shown in the embodiments.

Further, the arrangement of the cassette tilt regulating means 32 to 37 is not necessarily limited to the positions shown in the embodiments, and the pressing force F1 due to the return spring 8 of the shutter opening/closing lever 5 mentioned above is applied to the disk cassette 1. The arrangement of the cassette tilt regulating means 32 to 37 is also changed depending on the position where they act.

[Application example]

The present invention is not limited to a micro floppy disk cassette mounting device (magnetic type).

Dedicated? 'K1. VV 〜ρnmu ＾I = hi base a
) force n sai kyu wo ichi σ) growth - trowel 1θ γ) /'I2
The present invention can be applied to a mounting device for a disc cassette for various uses, which stores various discs for playback.

〔Effect of the invention〕

As described above, the present invention provides that the disk cassette inserted into the cassette holder is tilted to one side with respect to the cassette insertion center line of the cassette holder by the spring force of the return spring of the shutter opening/closing lever, and a plurality of cassette positioning bins are formed. Since it is possible to prevent misalignment of the plurality of engagement holes on the bottom surface of the disk cassette against the disk cassette, the plurality of engagement holes can be smoothly and accurately engaged with the plurality of cassette positioning pins when the disk cassette is installed. The disc cassette can be accurately mounted to the cassette mounting position. Therefore, there will be no occurrence of poor contact between the head and the disk in the disk cassette, and recording or playback can be performed with high precision.

The disks rotated within the disk cassette are not damaged and are extremely reliable.

In addition, inside the left and right side plates of the cassette holder (filler 6)
The dimensions in Figure A) are the left A width of the disk cassette (Figure 6B).
Even if the disc cassette is set to a size large enough to accommodate the dimensions of the disc cassette, it is possible to prevent the disc cassette from tilting within the cassette holder, so that the disc cassette can be smoothly inserted and removed from the cassette holder.

Furthermore, the cassette tilt regulating means has a very simple structure and is very easy to manufacture.

[Brief explanation of drawings]

1A to 4B show a conventional example of a micro floppy disk cassette loading device, and FIGS. 1A and 1B are plan views illustrating the disk cassette loading operation, and FIG. 2A 2B is a cross-sectional view taken along the line ■-■ in FIG. 1B to explain the same operation as above, FIG. 3 is a plan view taken along the 1t-ni line in FIG. 2B, and FIGS. 4A and 4B are cassette positioning bins. FIG. 3 is an enlarged sectional view taken along the line IV-IV in FIG. 3, illustrating the engagement operation of the engagement hole of the disk cassette with respect to the disc cassette. 5 to 8 show an embodiment of a micro-floppy m-disk cassette loading device to which the present invention is applied. FIG. 5 is a perspective view of the first embodiment, and FIG. 6 is a perspective view of the first embodiment. ]
FIG. 7 is a plan view similar to FIG. 3 of the embodiment, FIG. 7 is a plan view similar to FIG. 3 of the second embodiment, and FIG. 8 is a plan view similar to FIG. 83 of the third embodiment. Also in the symbols used in the drawings. J ・・・・・・・・・2 disc cassettes...
...Cassette holder 4...Shutter 5...Shutter opening/closing v-bar 6...
...... Engagement child? ......Fully point bin 8...Return spring 23...Cassette positioning bin 25...
...Engagement hole 3133.34.35.36.37 ...Cassette tilt regulating means
...This is the cassette insertion center line. Agent Souvenir Katsu 1

Claims (1)

[Scope of Claims] A disk cassette mounting device having a shutter for opening and closing a head insertion port, comprising: a cassette holder that can freely reciprocate between a cassette insertion position and a cassette mounting position; It has a shutter opening/closing lever that is rotatably supported and biased back in the cassette ejecting direction by a return spring, and a plurality of cassette positioning bins provided at the cassette mounting position of the cassette holder. By inserting the disc cassette into the cassette holder that is being moved backwards, the engager provided at the tip of the shutter opening/closing lever is engaged with one end of the shutter of the disc cassette, and the shutter opening/closing lever is returned against the spring. Then move it forward in the cassette insertion direction to open the shutter. Insertion of disk cassette into cassette holder completed J-
A disk cassette configured to be moved to a north V cassette holder cassette positioning position and to engage and position the disk cassette on a plurality of cassette positioning bins through a plurality of engagement holes provided on the bottom surface of the disk cassette. In the mounting device, a cassette inclination that restricts the disc cassette inserted into the cassette holder from tilting to one side with respect to the cassette insertion center line of the cassette holder due to the spring force of the return spring of the shutter opening/closing lever. A regulating means is provided to regulate the inclination of the disc cassette when the disc cassette is completely inserted into the cassette holder, thereby preventing misalignment of the plurality of engagement holes with respect to the plurality of cassette positioning bins. A disc cassette mounting device characterized by: