JPS6093665A - Loading device of cassette - Google Patents

Abstract

PURPOSE:To prevent a disc from the adhesion of dust or the like invading from the outside by rotating an opening/closing lid while interlocking the lid with the movement of a loading plate and closing an insertion port usually. CONSTITUTION:A pin 65 of the opening/closing lid 63 and an inclined part 68 of an opening/closing arm 67 are arranged with contact or slightly separately so that the lid 63 is positioned under the condition that the insertion port 80 is completely closed by the energized force of an elastic member 66. Consequently, said inserting port 80 is always closed by said lid 63 and prevented from invasion of dusts or the like from the outside. When a cassette case 2 is inserted from the insertion port 80 into the device by turning its end part 2c to the front, the lid 63 starts to rotate in the arrow J direction, a shutter 8 is moved by interlocking with the insertion of the cassette case 2, window part 6 is completely released from the shutter 8, and then an opening part 5 is completely released from the shutter 8.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a disc recording/reproducing device for recording or reproducing information, and particularly to a cassette loading device in which a disc stored in a cassette is automatically loaded into the device body. This relates to preventing dust from entering the main body of the device.

Conventional configuration and problems Conventionally, this type of disc has a problem that its playback ability decreases when it is touched by hand, or it is stored in a cassette for convenient handling and storage. Insert the cassette containing the disc from the cassette insert [1] provided in the main body of the device, and then manually insert the cassette into the specified position. For example, compact floppy disk 5.
There is an ift type device, but this type of device does not require manual operation to insert and attach the cassette to a predetermined position each time, and usually the cassette insertion slot is
Although it is shielded by the fluid made of the elastic IJ of the leaf spring and prevents dust from entering from the outside, in the case of a cassette device, it is difficult to press the lid. When the cassette is inserted through the cassette insertion side 1, the cassette is inserted so that the cassette 9 on the side opposite to the cassette insertion side protrudes slightly from the cassette insertion side 1. It is difficult to completely shield the cassette insertion slot, so
"Dust, etc. may enter the inside of the device from the gap between the cassette and the disk I-Ks installed inside the device.
, J-Record It was inevitable that dust would adhere. Fork,
When the cassette is loaded, the cassette insertion slot itself engages with the cassette and moves the cassette in a direction perpendicular to the insertion direction of the cassette (1). It was essential to have a means to prevent dust from entering the space due to the movement of the air.

Invention 1-) The uIJ from Mataki was proposed in view of these conventional drawbacks, and the main point of the IEJ is that by simply inserting a cassette containing a disc into the cassette insertion slot of the main body of the device, The cassette is not loaded into a fixed position in the device 1j11, and the outside of the disk loaded inside the device is always prevented from getting in with dust from the cassette insertion slot. It can prevent the adhesion of dust etc. from
The objective is to provide a highly reliable cassette loading device that has a simple configuration and is easy to operate.

Structure of the Invention The cassette loading device of the present invention includes an insertion opening into which a cassette is inserted, and a spacer located 11'' behind the insertion opening.
) j [j entry entrance l/) J lj freely I no former λj Ruyoshi, the opening/closing arm that closes the opening and opening, and the insertion of the cassette from the IJfli insertion slot i"fE
and a second position in which a disc stored in the cassette can be played, and a movable cassette holder in the first position and the second position. Consisting of a loading plate and a cam integrally provided with the loading plate, +
If the rope ink plate moves, Nf]f
The cam installed on the rotary nog grate allows IJ
The IJIII arm begins to operate, and the opening/closing arm opens and closes +j', i becomes I's old λ], and the insertion slot for tjtJ is automatically opened. □Complete,
in the first position, and in the second (I device, +
ii) Insert recording sound entrance into J entry.Always keep it quiet to prevent dust and other contamination from entering the insertion slot.

Example theory [! II Hereinafter, I will explain the drawing (and therefore the theory 1) regarding the real bit +, 13'll of Ki-ni 1νj.

Figure 1, 21x+? A-. Disc case note j, t 61. IXI-C'
A') Figure 1 shows the device 1ll (inserted into itself +
II
The figure shows the open law f of the 7-yano tar when eζkon is inserted into the device.
41. ) In Figures 1 and 2,
The disk 1 is rotatably housed inside a cassette housing 2 consisting of a cassette 1, internal parts 2a and 2b, and an end portion 2C22d. 3a and 3b are positioning grooves that engage with cassettes 9i and 9i of a cassette holder, which will be described later, to position the cassette housing 2 within the cassette holder. A part of the cassette housing 2 has a window 6.
is IJ old 21, and a part of N IJfl a+L take 1 is exposed to the outside as shown in Fig. 2. An optical head (not shown) is inserted into the window 6 to record or reproduce desired information on the disk 1''.

Further, the rotation center 1114 of the disk 1 is provided with an opening 5 (not shown) into which a cutting means for rotating the disk 1 is inserted. 8 is ”-window 6 L
1jti It is a notebook-like notebook that closes the IJ capital 5, and is U-shaped so as to cover the window 6 and the opening 1'-1 part 5, and the concave 1ll of the cassette case 2.
7l is arranged so as to be slidable in the direction of arrow A. The filter soter 8 prevents dust and the like from entering the cassette housing 2 from the window 6 and the 1jFJ opening 6. Reference numeral 9 denotes a notebook-shaped slide plate that is integrally housed in the RfJ shutter 8 and moves along slide grooves 12a and 12b formed inside the cassette case. ing. Furthermore, t3! A protrusion ifζ10 is formed protrudingly at one end of the slide &9, and a long hole 4d is formed along the side 2a of the cassette housing 2.
4b is an elongated hole formed opposite to the elongated hole 4a marked on the side of the disk. It is arranged so that the moon can be read.I will explain it later.
Q iJl, there is something that engages with a protrusion provided on the cassette holder on which the cassette case 2 is placed, +ii
When the cassette cassette case 2 is inserted into the holder, it is moved in the direction of arrow B. 1. i′
- When the cassette housing 2 is inserted into the cassette boulder, the window portion 6.1Jlj1.
I was holding 1llX5/4% in the direction of arrow C according to the movement of Kinotar 8 or slide plate 9! Since IυJ, 1ii + written window i1≦6, and 5 to open + + ril
i, J: The optical head and disk rotating means can be inserted.

On the other hand, one end of a stretchable elastic guard 11 is locked to the other end of the slide plate 9. In addition, the elastic part 4:)
; The other end of 11 is connected to a pin (
Not shown. ), the slide plate 9 is pulled and rooted in the direction of the arrow by the elastic force of the elastic member 11, as shown in FIG. Opening 5 is always 11 by 7 yanotar 8
It is configured so that one leak can occur. Therefore, when the temporary cassette 2 is removed from the cassette holder, the protrusions of the cassette holder disengage from the protrusions 10 of the slide plate 9, and the shutter 8id is automatically moved in the direction of the arrow. The window portion 6 and the opening portion 5 are completely closed and opened to prevent dust from entering.

Next, an embodiment of Kibori J's cassette loading device iM will be explained based on FIGS. 3 and 4.

FIG. 3 is a second perspective view showing the configuration of this device;
The figure is an exploded perspective view showing the configuration of the loading section of the present device.

In FIG. 3, 71 is a disc rotation mechanism;
79 (shown with a dashed line) is a front panel integrally formed with the base 71. In addition, the main panel 79 in section 11a is provided with an insertion port 80 through which the cassette case 2 is inserted into the device 17. Reference numeral 63 denotes an opening/closing island that opens and closes the insertion port 8o, and the loading guide 51a, 51, which will be described later, can be rotated freely using pivot pins 54a, 64b provided at both ends as fulcrums.
It is supported by b. Normally, the insertion port 8o is
The insertion opening 8 is designed to close when opened.
Prevents the ingress of dust, etc. from 0 to 1. 65 is 1j
fJ is a pin provided integrally with the opening/closing lid 63, and 6
It is in harmony with the opening/closing arm song of No. 7, Kyuto 68. The opening/closing arm 67 (the rotation axis of rj 70 and the slide axis of 69 are connected to each other, and the rotation axis of +jff is engaged with the hole 57 of the ding guide 51b, so that it can be rotated freely. The loading guide 51bKg is attached as shown in FIG.

Reference numeral 13 denotes a cassette holder on which the cassette case 2 is placed, and has a pair of receiving portions 20a and 2ob at both ends for receiving both sides 2a and 2b of the cassette case 2, and is formed in a substantially U-shape. There is. Inside the 6Q recording portions 20a and 2ob, there are protrusions 16a that mate with the protrusions 1o provided on the cassette housing 2 described above.

16b, and the positioning groove 3a of the cassette housing 2.

3b and attach the cassette housing 2 to the cassette holder 13.
Each cassette temporary fixing member 15a, 1 to be temporarily positioned inside
5b are arranged. nf7 Cassette bale stopper J part paulownia 15a, 15b is formed of an elastic member such as a leaf spring, and is configured to allow the cassette housing 2 to be manually inserted into and removed from the cassette holder 13. Also,
21a and 21b are projecting pieces formed by bending one end of each of the receiving parts 20a and 20b, and when the cassette housing 2 is positioned in the cassette holder 13 by the cassette temporary fixing members 1esa and 15b, if It is arranged with a slight gap so as not to come into contact with the end portion 2C of the cassette housing 2. Cassette holder 13
The front part 14 of the cassette housing 2 is slightly sloped downward to facilitate insertion of the cassette housing 2. 17 is an opening provided corresponding to the window 6 of the cassette housing 2 and the opening 5, and is formed so that it will not come into contact with the rotating means, sor, and head rest described later, even if they are inserted. has been done. 18a, 19
a, 18b and 19b are holes provided in the name receiving portions 20a and 20b, respectively, and pins 42a and 43a.

, 42b and 43b are formed so as to be housed integrally with each other. The cut pins 42a, 43a, 42b fit into the cassette holder 13.

43b engages with each guide fr'/l provided on a cassette cover, loading play 1, loading guide, etc., which will be described later, to enable the cassette holder 13 to move freely in the directions of arrows E and F. .

22L/i, a substantially U-shaped cassette cover having end portions 34a and 34b formed to cover the cassette holder 13, and pins 42a and 43a of the cassette holder 13 on which the cassette case 2 is placed.

And letters Jj'/+'/i30a, 31a and Usob provided at the ends of 42b, 43b, 34a, 34b.

31b respectively engage with the cassette holder 1.
3 can be moved freely in the direction of arrow E. Note that the ends 34a and 34bK each have 1)
Regulating pins 32a and 32b for regulating the cassette cover 22 in the direction of arrow G are integrally housed. 33a and 33b are the cassette holder 1
When the cassette housing 2 is inserted into the cassette case 3, the cassette temporary fixing part paulownia' 15a.

Reference numeral 16b denotes a notch portion formed so as to be freely displaceable toward the outside of the cassette holder 13. 26
．． Reference numerals 27, 28, and 29 denote a cassette holding member made of an elastic member such as a leaf spring that is integrally provided with the cassette cover 22, and presses and supports the cassette housing 2 temporarily positioned on the cassette holder 13. It is. 24 is an opening for inserting a clamper, which will be described later, and 25 is an opening for rotating the clamp arm of the clamper. Further, the front end portion 23 of the cassette cover 220 is bent upward as shown in FIG. 4, and the cassette housing 2 is loaded into a disc rotating means J2 (to be described later) to be in a playable state. When the insertion port 8
0, and even if another cassette housing 2 is inserted, it will come into contact with the +MJ end 23 of the cassette cover 22 and will not be inserted into the apparatus.

Reference numeral 36 indicates interlocking grooves 40a and 4 for moving the cassette holder 13 in the directions of arrows E and ), and moving the upper cassette cover 22 in the direction of arrows G.
Side parts 36a, 3 with 1a and 4ob, 41b
6b, and pins 3 on both sides 3ea and 3eb for moving the 6ft loading plate 35 in the direction of arrow H.
8a, 39a and 38b.

39b is arranged. Incidentally, the above-mentioned continuous QJ groove 40a.

41a, 4ob, and 41b are the cassette holder 1;
Pins 42a, 43a and 42b, 43 provided in 3
b are formed to be slidable, respectively, and as shown in FIG. 40a'' and 40b', 4ob''
It has each inclined surface. 37 is
This is an opening for inserting a rotating means, an optical head, etc., which will be described later, and is formed so that even if the loading plate 35 moves in the direction of arrow H, it will not come into contact with the rotating means, optical head, etc.

A base 71 is provided on the bottom of the loading plate 35 in the housing.
Loading motor 62, worm gear 61a1, worm wheel 61b1, gears 61c, 6, which are housed in
Loading mechanism 60 consisting of 1d, 61e, 61f
A rack plate 50 that engages with the slide shaft 69 of the opening/closing arm 67 to move the loading plate 36 in the direction of the arrow H, and a rack plate 50 that engages with the slide shaft 69 of the opening/closing arm 67 to rotate the opening/closing arm 67. A guide groove 49 consisting of a cam 44 having an inclined capital 45, 47 and a straight part 46, and a horizontal part 49a1, a tilting part 49b1, and a horizontal part 49C that engages with a clamp arm to be described later to move the off-clamp arm. A cam 48 having
Each is housed in one piece.

51a, Eilb is the above t:I-T7GufL'-
1-36, and is a loading guide for moving the cassette holder 13, cassette cover 22, loading plays 1 and 36, etc.

Since the loading guides 51a and 51b are symmetrical, the loading guide of the lid 1151b will be explained here. 68b is an opening/closing lid 63
52b and 53b are holes that engage with a pivot pin 64b to rotatably support the opening/closing lid 63, and 52b and 53b each have a
2b and 43b are engaged with the pins and the cassette holder 13
This is a dogleg-shaped first guide groove that guides in the directions of arrows E and F. 54b is the regulation bin 3 of the cassette cover 22.
2b and guides the force centering force bar 22 in the direction of arrow G. cssb, se
b is the pins 38b and 39b of the loading plate 36
67 is a third guide groove that engages with the rotating shaft 70 of the opening/closing arm 67 and guides the coding plate 36 in the direction of the arrow H, and 67 engages with the rotation shaft 70 of the opening/closing arm 67 to guide the opening/closing arm 1). This is a hole that supports 67 so as to be movable together.

72, there is a crank edge for holding the disc 1 housed in the cassette housing 2 under pressure against a rotating means to be described later; II
It is rotatably housed in a clamp arm 76 via an i[l] 73 and an elastic member 74.

Reference numeral 83 denotes a hole that engages with the shaft 73, and is shaped like 1 so that the R'J clasp 72 presses and holds the disc 1 against the rotating means and does not come into contact with the shaft 3 even when the disc 1 is rotated. has been done. gt
Although not shown in the figure, the Clamp arm 75 of J is attached to the pin 7.
It is rotatably arranged on a base 71 with 7 & , 7-rb as a spindle, and is rotated in conjunction with the aforementioned cam 48 to actuate the clamp 72 and hold the disc 1 under pressure. is configured to do so. A pin 78 (see FIG. 5) that engages with the guide groove 49 of the +JfI cam 48 is provided on the side portion 7eb of the 6iJ clamp arm 75.

Next, the loading operation of the present invention will be explained with reference to FIGS. 6 to 9.

Figures 6 and 7 are cross-sectional views of the device, with Figure 6 being a cross-sectional view before the cassette housing is inserted, Figure 6 being a cross-sectional view with the cassette housing inserted, and Figure 6 being a cross-sectional view of the device before the cassette housing is inserted. FIG. 7 shows a cross-sectional view of the disk when it is pressed and held by the rotating means. Also, Figure 8.

Figure 9 shows the loading state of the cassette case...
8 is a 1-plane 11jr curved view of the device at the first position, and FIG. 9 is a cross-sectional view of the device at the second position where the disk is held by the rotating means and is played. It is a top sectional view.

In FIG. 5, the cassette holder 13 is waiting in the first position where it can be inserted into the cassette housing 2,
Similarly, the loading plate 35 also has a tli inlet 801.
It is located at 1114. Here, open/close arm 6
7, the slide shaft 69 is connected to the loading rate 3;
Around 1 of the cam 44, which is integrally arranged at
446e (= J force, the pin 66 of the opening/closing kes is positioned so that the insertion port 8o is completely closed,
1) The inclined portion 68 of the opening/closing arm 67 shown in FIG.

Therefore, the 130 insertion 1'' 80 is always protected by the opening/closing lid 63, and dust and the like from the outside are prevented from entering. In addition, the opening/closing lid 63 is
The cassette housing 2 can be inserted through the insertion opening 80 against the biasing force of the elastic member 66. On the other hand, the clamp arm 76 engages with a cam 48 that is integrally housed in the loading plate 35, and even if it is inserted into the cassette housing 2 or the cassette holder 13, the clamp arm 76 does not fit into the cassette housing 2 or A guide groove 49 provided in the U-marked cam 48 so as not to come into contact with the club/tube 72.
and a pin 78 provided on the side portion 76b of the clamp arm 76 are arranged so that they are inserted and held together.

The guide/449 of the cam 48 has a horizontal portion of 49a;
An inclined part 49b inclined downward by about 1° from the horizontal part 49a, and a horizontal part 49C continuous to the end of the inclined part 49b.
The pin 78 provided on the clamp arm 75 is normally locked in the horizontal portion 49a of the guide groove 49 as shown in FIG. In addition, the pin 7
8, when the loading plate 1 35 is moved in the direction of the arrow, +jff mark 48 is also moved in the direction of the arrow, so the guide i: tj 49's water 'F ff
Slide I44 g a, then slope i3 (<49 b
Start printing UQJL. At the same time, the clamp arm 75 is tilted downward from the pin 77a and the 'y'yb axis because the 17-rf (549a) It begins to rotate in the direction of the arrow, and the pin 78 shown in 1) slides off the 49b and rotates with a reed. When the disk 1 is slid by the water '1'ff1i 49 c, it turns around the clamp arm 75 and is held by the clamp 72 held by the white and white three, so that the disk 1 is pressed against the rotating means 82 as shown in FIG. held, Dlf + own lamp arm 75 NO JUJ Ir:J, 'end j
'-J-le. Furthermore, the bottle 78 marked with 1ffl is fJl.
1471 (4)
Since 4 threads IJ- are attached to 9c, the clamp shape is maintained.

Conversely, when the cam 48 is moved in the direction of the arrow ' from the ramp state described in , the pin 78 of the clamp arm 76
slides the horizontal part 49c of the guide groove 49 of the cam 48,
In order to slide the horizontal part of 49a through the inclined part 49b,
The pH + clamp arm 75 is reversed in the force direction of arrow L', so the clamp 72 is spaced apart from the disk 1,
As shown in FIG. 6, the cassette housing 2 is rotated so that it can be removed without contacting the crank 72.

As mentioned above, the enclosure M63 and the clamp 72 of this device are configured to be rotatable.

Therefore, in the device for maintaining the cassette housing 2, as shown in FIG.
When inserted into the device through the insertion port 80 with its face facing up, the opening/closing lid 6
3, it begins to rotate in the direction of the arrow ■, and then the opening/closing lid 6
When the cassette housing 2 is inserted in the direction of the arrow X against the biasing force of the elastic member 66 of No. 3, the end portion 2C of the cassette w body 2
Or θv of cassette holder 13? 31≦ and starts sliding inside the cassette holder 13. And 1 hour.”
At this time, the cassette temporary fixing members 15a and 15b provided on the receiving parts 20a and 20b of the cassette holder 13 begin to come into contact with the side parts 2a and 2b of the cassette case 2, and then the cassette holding member of the cassette cover 22 26. It starts to come into contact with 27. I'm going to insert cassette case 2 into history, +j
Long hole 4a of rf cassette housing 22a, 2b,
4b, the receiving parts 20a, 20b of the cassette holder 22
(7) After the projections 16a and 1eb are inserted, fj
The protrusion 16a marked fJ is arranged within the elongated hole 4 marked iQ,
The protrusion 1o of the slide plate 9 makes contact.

When the slide plate 9 comes into contact with the +jff protrusion 16a, the slide plate 9 will not move even if the cassette case 2 is further inserted.
Since the insertion is stopped by the protrusion 16aK, the slide plate 9 moves in the direction of arrow B as shown in FIG. 1 along the slides 12a and 12bK formed inside the cassette housing 2. start.

As a result, the shutter 8, which has been integrally accommodated in the slide plate 9 (=J), also begins to move in the direction of arrow C, so that 1) one end of the old section 6 is exposed, and then the window section 6 One end is dew -9! Let's start. Furthermore, as the insertion of the cassette case 2 continues, the shutter 8 moves in conjunction with the insertion of the cassette case 2, and the leading window part 6 is completely opened by the shutter 8, and the next inclined opening is opened. 6 is completely released from Nyatter 8. At the same time, the cassette temporary fixing member 15a,
16b and the positioning grooves 3a and sb provided on the sides 2a and 2biC of the cassette housing 2 respectively engage, and +f
fJ cassette case 2 The cassette case 2 is temporarily positioned in the set holder 13, and the end 2d of the cassette case 2 is slightly exposed from the front panel 79 as shown in FIG. ends. This position is the first position described above, and is not only the position at which the cassette case 2 is inserted, but also the position when the cassette case 2 is manually removed from the apparatus.

At this time, the cassette housing 2 is moved by the arrow X by the elastic member assembly 11.
Although the old force in the force direction is always acting, the biasing forces of the cassette temporary fixing members 15a, 1sb and the cassette holding members 26, 27, 28, 29 mentioned in [)IJ are larger, In the cassette holder 13, the force center temporary fixing piece 11esa is installed.

15b and cassette holding members 26, 27, and 28.

29, it is pressed and held and placed. In this state, when the cassette housing 2 is further manually pushed slightly in the direction of arrow X, a loading start detector (not shown) consisting of a photodetector or the like detects the insertion of the cassette housing 2. Activate loading m41'46o. When the 600 rotary motor 62 of the loading machine 6I starts rotating, the rotation of the loading motor 62 is controlled via the worm gear 61a which is integrally absorbed in the IJII +'N rope ink river motor motor 62. , 61b, and is further transmitted to gear 61d by gear 61C, and then to el via gear 61e.
It is transmitted to the f gear. Further, the gear 61f is connected to a rack plate 60 disposed on the bottom surface of the loading plate 36.
1j0 rope ink motor 62 is activated!
1jIJ force is transmitted to the rotating plate 36.

Therefore, when the motor 62 starts to rotate in a predetermined direction, the loading plate 36 starts to move in the direction of the arrow, so that the cassette case 2 is loaded in conjunction with the movement of the loading plate 36.ii'7. The L cassette holder 13 also begins to move in the direction of the arrow. Furthermore, due to the movement of the loading plate 36, the slide shaft 69 of the opening/closing arm 67 begins to slide on the oblique portion 47 of the cam 44, so the opening arm 67 begins to move in the direction of arrow 0 (B). , the pin 78 of the clamp arm 76 also begins to slide in the kite groove 49 of the cam 48. The slide shaft 69 of the opening/closing arm 67 is connected to the inclined portion 4 of the cam 44.
7 and slides onto the straight section 46, the opening/closing arm 67
The inclined portion 68 of the opening/closing M63 comes into contact with the pin 65 of the opening/closing M63.
0 mark l\JM63 is prevented from rotating in the direction of arrow 1' due to the biasing force of the elastic member 66. mf opening 1■
While the arm 6 is sliding on the sliding shaft 69 or the straight portion 46 of the cam 44, the opening/closing M63 is as shown in FIG.
Supported by the inclined part 68 of the opening/closing arm 67, the insertion opening 8o
is open to the public. On the other hand, in the clamp arm 75, the pin 78 of the clamp arm 75 is connected to the guide groove 4 of the cam 48.
While sliding on the horizontal portion 49a of the cassette cover 9, the clamp 72 is supported with a portion of the clamp 72 inserted into the opening 24 of the cassette cover 22, as shown in FIGS.

When the loading plate 35 is moved in the direction of the arrow, the movement of the receiving part 20b of the cassette holder 13 (here, the movement of the receiving part 20a on the opposite side is in the same direction as the pronged part 20b, and will not be described here). pin 42b provided in
, 43b are the first guide grooves 52b of the loading guide 61b.

Due to ssb, 4% mJ direction is transferred from the direction of the arrow to the direction of the arrow P. When the cassette holder 13 begins to move in the direction of the arrow P, the cassette cover 22 also moves in the direction of the arrow P because the pins 42b and 43b have passed through the guide grooves sob and 31b of the cassette cover 22, respectively. Start moving in the direction.

At this time, the opening/closing arm 67 closes the inclined portion 45 of the cam 44! l1lJ has started, and the arrow O' force direction turns! ldJ will be done. When the opening/closing arm 67 turns, the opening/closing lid 6
3 also begins to rotate in the direction of arrow 1' due to the force J of the elastic part paulownia 66. On the other hand, the clamp arm 76
However, the horizontal portions 49a to 49b of the guide groove 49 of the cam 48
It begins to rotate in the direction of the arrow as it begins to slide on the inclined part. Note that the opening 6 and the window 6 of the cassette housing 2 are in a completely open state, and the optical head, the rotating means, the clamp 72, etc. are in a state where it is possible to insert Bf.

Cassette holder 13 on which the cassette housing 2 is mounted
As it is further moved in the direction of arrow P, the rotating means 82 for rotating the disk 1 is inserted into the opening 17 of the cassette holder 13, and then the opening part rsK of the cassette housing 2 is inserted into the opening 17 of the cassette holder 13.
, the rotation means 82 is inserted, and the disc 1 is
It is placed on the rotation means 82. At the same time, clamp 72
M75 was also around G4 of Cam48's kite l/r449.
It is slid from fsi≦49b to the horizontal part of 490 and moved in the direction of the arrow, and as shown in FIG. Hold it freely. Although not shown, the cassette housing 2 is positioned by providing a positioning hole in the cassette housing 2 and protruding on the base 71 a positioning post that engages with the positioning hole. The housing 2 can be positioned at a predetermined position. Incidentally, when the cassette case 2 is placed at a predetermined position 16, if a loading end detector such as a microswitch (not shown) is activated to stop the loading motor 62 from rotating, the loading operation can be completed. 7, the disc 1 is freely held by the clamp 72 at the turn 82''-, and becomes ready for playing. At this time, the insertion port 8Q is already closed by the gate 63, as shown in FIG. 7, to prevent dust and the like from entering from the outside. Further, even if another cassette housing 2' is inserted from the insertion slot 8o while the disc 1 is being played, the cassette cover 2'
2-11 "It is configured so that it collides with the first end jls 23 and is not inserted into the device.

When the performance of the disc 1 is finished and the disc 1 is to be removed from the apparatus, the loading operation described above can be performed in the opposite manner, so that the explanation thereof will be omitted here.

If the cassette housing 2 is temporarily positioned within the cassette holder 13 during the loading operation, as shown in FIG. A cassette temporary fixing member 15a provided on the holder 13.

One end of the cassette kite 22 is the end 34a of the cassette kite 22.

34b and the front spacer temporary fixing member 1
5a, 15b from escaping outward, the positioning grooves 3a, 3b of the mJ cassette housing 2 and the cassette temporary fixing members 15a, 15b are not disengaged from each other.

Therefore, the cassette housing 2 does not shift from the predetermined position of the cassette holder 13 during the pre-loading operation.

Effects of the Invention From the above explanation, it is clear from the above explanation that according to the device of the present invention J, in conjunction with the movement of the loading plate,
Since the opening/closing lid is rotated so that the insertion port is always closed in the first position and the second position, normally,
Unless the cassette is inserted through the insertion slot, the opening/closing lid closes the insertion slot without opening, so is it outside? In addition, even if the cassette is inserted into the device and loaded in a playable state, the insertion port is closed, preventing dust from entering from the outside. Since there is no 4J"1-J- on the disk, a highly reliable device is provided.In addition, the opening/closing lid is automatically rotated in conjunction with the movement of the loading plate. It can be easily configured,
And a loading device during operation f7u can be provided.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the cassette casing used for unexploded 'IIF with the shutter closed, Figure 2 is a perspective view of the cassette case with the shutter open, and Figure 3 is a perspective view of the cassette case used for unexploded 'IIF. Example of cassette loading device! FIG. 4 is an exploded perspective view showing the configuration of the loading section of the device, FIG. 5 is a cross-sectional view of the device before inserting the cassette case, and FIG. 6 is the cassette. The cross-sectional view when the casing is inserted, Figure 7 is the disk or times! FIG. 8 is a top sectional view of the device in the first position, and FIG. 9 is a top sectional view of the device in the second position. 1...Disc, 2...Cassette housing, 13...Cassette holder, 35...
- Loading plate, 44...Cam, opening/closing lid, 67...Opening/closing arm, 80...Insertion slot. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure 3 Figure 5 Figure 7 Figure 8 Figure 9

Claims (2)

[Claims] (1) An insertion port for inserting a cassette into the main body of the device, and an opening/closing port located at the step j of the +iif insertion 11, which opens and closes the insertion port. An opening/closing arm for opening and closing the lid, a first position for inserting a cassette from the insertion opening, and a second position for playing a disc stored in the cassette described in 11a. Move the cassette boulder to the first and second positions of nO! It consists of a loading play 1 for opening and closing the lid, and a cam that is integrally provided on the loading plate and operates the opening/closing arm +Jff, and when the loading plate +Kj moves, the opening/closing arm is actuated to close the opening/closing lid. A cassette loading device 1°″°1°0 characterized in that it has 1°4 configurations to open and close (1°”°1°0 (2) The opening/closing cover is configured to be opened from the insertion opening by the opening/closing arm only when the cassette boulder containing one cassette is moving from the first position to the second position. A cassette loading device according to claim 1.