JPS5845658A - Shutter for recording disc reproducer - Google Patents

Abstract

PURPOSE:To prevent double loading of a jacket and invasion of a foreign material, by providing two shutters to a jacket insertion inlet and opening or locking the shutters in response to the state of a disc by a lock member. CONSTITUTION:Two shutters 51, 52 choking a jacket insertion inlet are provided. In inserting a jacket, the shutters 51 and 52 are opened, a spine is held at a chucking device, a disc is loaded to a player and the shutter 51 is locked with a lock member 62. When the reproduction is finished, a lever 59 and a lock release member 66 are activated through the movement of a slider 24 and the locking of the shutter 51 is released. The jacket is inserted and pulled out after the spine and the disc are retrieved. When the disc is loaded, the shutter 52 inhibits the insertion of a new jacket. Then, the invasion of a foreign material and double loading of the disc can be prevented and also the re-insertion just after the jacket pullout can also be prevented, allowing to protect the disc from a damage.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording disc playback device such as a video disc player, and more particularly, to a recording disc playback device such as a video disc player, and more particularly, to a recording disc playback device such as a video disc player, etc. Therefore, if the player is equipped with a jacket insertion hole 10, a foreign object other than the jacket may be inserted through the insertion opening, or even if a disk is already loaded in the player. First, it relates to a shutter device that prevents the insertion of other disc-containing jackets.

If you want to play back the ``Chiriru Amakuri'' record that is currently in general use, you must grab the record from inside the jacket with your hand, place it on the player's turntable, and then start playing. There is. Playing the Record Again, he picks up the record from the turntable with his hands and stores it inside the empty jacket. By the way, POM records have been attracting attention recently, and some of them have already been commercialized.

Also, like this PC, M record, only 廿 (1111
A video disc recorded on a record with 1 image has also been announced. Both such POM records and video disc records are similar to discs [7], as will be explained below.
Unlike conventional records, signals are recorded on these discs by digital signal recording using fine bits. Therefore, the cartridges for converting this pattern Δ, 111 bit change into an air mixture signal must also be of high precision.

For example, a stylus that uses laser light or has electrodes formed on diamond or diamond is used. In this way, in order to detect heat waves on the order of a few microns and convert them into 1,000-ton air signals, when the disc is directly removed from the jacket and put back in by hand, the recording surface of It is easy for dirt, dust, etc. to adhere to the stylus, and if these foreign substances adhere to the stylus, they may appear inside the screen as dirt or may damage the stylus. Therefore, directly insert the jacket into the player with the disc in the stowed state (without touching the disc with your hands), put the inside of the player into the turntable, and perform the 44-movement operation.・W
4〉k 1. -riro. After the playback is finished, there is a white message inside the empty jacket jacket. In IIJJ, the disc is stored in the jacket inside the player, and when you pull out the jacket from the player, the disc is stored in the jacket and taken out with the tl-9 position.
, is.

The case of a video disc playback device using such a method will be briefly explained below. Figure 1 schematically shows such a jacket and Brayake decoy, and the Jackera l-11 is formed into a thin box shape. There is an opening ζt1 formed only on the side of L. This opening (1
2), the spine 13 is inserted through the main body 1815, and the lid part 14 that closes the A'iT opening 1' portion 12 is collapsed 4). This spine 13
The main body portion is covered in a substantially ring-shaped space, and a disk 15 is accommodated in this space. On the other hand, the player main body 16 is provided with an insertion L117 for inserting the jacket 11'fa-matchmaker ζ and an optional operation button 1B. Insert the player body 16 from the opening of the jacket 11]2; if! Then, insert the jacket 11 into the player body 16. r9
r ``Ijl's 1st night's roar, j application f11 Otsu jacket 11 is here (- in the player body) 6 'J1
A chucking device (not shown) holds the spine 13 fixedly within the player body 16. After that, when the player body 16 is pulled out from the player body 16, the spine 13 and disk 15 remain inside the player body 16, and only the empty jacket 11 is removed.
) σt. -t- and empty jacket 1 after playback ends
1 into the player body 16, the player body 16
When the chucking device inside the chucking device is fixed, the disc 15 is released and the playback is completed in the jack seat 11.
And spine 13 is 71. reactor. sled)
By pulling out the bag jacket 11 from the player main body 16, the disc 15 can be stored in the jacket 11 in a closed state. Therefore, the user can directly touch the disc 15 (perform playback operations).

The operation of inserting and removing the jacket and its relationship with the turntable will be explained with reference to FIGS. 2 and 3. In FIG. 2, a chassis 19 is provided within the player body, and a turntable 20 is disposed within the chassis 19.

As for its installation method, the rotating shaft 21 of the turntable 20
is fixed to the mounting 22FC on the chassis 19 and supported by the bearing 23, and the tip 211 of the rotating shaft 21 is supported by the slider 24 attached to the surface of the chassis 19 (therefore, it is not possible to .

The slider 24 is also σ) and Q) in order to raise and lower the turntable 20 in the vertical direction, and is slidably attached to the lower surface of the chassis 19.

As shown in the figure, this slider 24 has a bottom part (rotary shaft tip 21
1) changes in stages ↓ sea urchin, high i
(S 241, has a lower part 242 and 243 slope parts connecting the two, and this slider 24 (9)
) Attach 25 levers to one end of the slider 25, and by moving the lever 25, the slider 24 moves along the chassis]9 in the left/right direction where l>1.

When the slider 24 moves in the direction of the 21y1 arrow A, the tip 211 of the rotating shaft 21 moves towards the slider 24θ) lower part 2
Suspension 1 to support 42, turntable 20 is 1kft below
Located in Also, the slider 24 is indicated by arrow r-1j in Figure 3.
Rotating spider when moving in B direction (between arrow A direction and opposite direction)] Tip 2
11 moves to the -C cylinder part 24 along the diagonal opening i1j 243, and a support ζr1. As a result, the turntable 20 rises [and comes into position]. In this way, the turntable 20 moves up and down.

This kind of lifting and lowering stake of the turntable 20 is not shown in detail.

1, in Figure 2, turntable 20 or descending 6L
A support 26 is placed at a position higher than the soil surface when it is in the ground.
has been established. This support body 26 supports the jacket (10) and the jacket (10) and the spine 13 when the jacket (11) is inserted into the jacket (JK) and the pot, or when the jacket (11) is pulled out and swollen. It is for the purpose of The above-mentioned chucking device 27 is provided at the rear end of the player at a height 1 position that is approximately the same as the jacket insertion opening 1''/.

The operations in FIGS. 2 and 3 are as follows.

At first, the turntable 20 is in the lowered position 1\f, and the jacket insertion slot 17 is inserted into the disc] 5 and the spine 13.
: When inserted, the jacket 11 is pushed onto the support 26 in the direction of the chucking device 27, and the chucking device 11 is inserted!
That's 27. In the same way, a guide is provided at the casing to guide the jacket 11"% correctly to the chucking device 2'/(8), but the illustration is omitted. And the chucking device w
By 27, Spine 13) 4tl Jirinbu 14 is 1 tomoe 1. Next, when you pull out the jacket 11, the spine 13
and only disc 15 or player internal pressure remaining, AiT Bt
It can be mounted on the support plate 6. Thereafter, as shown in FIG. 3, the front lever (1) is moved, and the turntable 20 is turned upward, and only the disk 15 is placed on the upper surface of the turntable 20.

Next, by pressing 18 operation buttons, the playback operation can be completed.

At the end of the first stage of playback, the turntable 2° is lowered again and the disc 15 is fully supported by the support 26 as shown in Figure 2, and when the jacket 11 is inserted, this jacket 1]
A spine 13 and a disk 15 are housed inside. Then, the chucking device ft27 moves the spine 13 to 1 (to)
By releasing the jacket 11 and pulling out the jacket 11, the spine 13 and the disc 15 can be taken out from the player with the spine 13 and the disc 15 housed in the jacket 11.

In this way, it is possible to load and unload the disk 15 without touching it directly.

By the way, in this type of H-Engineering device blue, this insertion opening 17 is provided to prevent foreign objects other than the jacket (for example, coins) from getting stuck or dust etc. to enter through the jacket insertion slot 1'i'7. It is necessary to install a W&K shutter.

(12) This shutter opens when the jacket is inserted, and the jacket with the flo disc is inserted into the player. (This is called double insertion)
It is necessary to provide a lock which prevents the insertion of any jacket during playback.

As a part of such a shutter device, the applicant of this patent applied for a patent on October 3, 1980.
No. 43'7573 V shows something like this.

The shutter device shown above has a shutter (lid body) attached to the jacket insertion opening σ) inside the player, and this shutter can be locked and released in conjunction with the vertical movement of the turntable 2). It has a V-shape to lock the shutter and prevent it from opening when the turntable is raised (during full playback).

However, although there is no particular problem with this kind of shutter device during normal handling, it is difficult to prevent the above-mentioned Sanya insertion, and it can cause a lot of damage. There is a risk that it will open if you press it. Since the mechanism locks the shutter based on the rise of the turntable after loading the disk into the awn, this locking action takes some time until the turntable has finished lifting. Normally, after the disc is loaded and the jacket is removed, the turntable begins to rise.
However, when the jacket was pulled out during the short period of time during the rise, it was immediately inserted into the shutter, and the shutter was not locked, so it could be inserted.
A situation occurs where the jacket collides with the turntable.

An example of a dual shutter device designed to prevent the insertion of foreign matter into the housing is shown in Utility Model Application No. 11055/1983, filed by the applicant of this patent on January 30, 1981.

However, it is unlikely that this device will be able to prevent double insertion as described above.

The present invention is as described above. This is a companion product made to solve 11, and prevents the insertion of foreign objects, and 2 (14)
) It is possible to provide a highly safe and reliable shutter device that prevents double insertion and also prevents the jacket from being pulled out immediately after the disk is loaded as described above.

The shutter device of the present invention will be described below with reference to the drawings from FIG. 4 onwards. Note that the same parts as in FIGS. 1 to 3 are denoted by the same reference numerals.

FIG. 4 shows the overall internal structure of a disc playback device (player) equipped with a shutter device of the present invention.
The outer parts of the shutter device are shown disassembled.

In FIG. 4, a turntable 20 is mounted approximately at the center of the chassis 19, and the tip of its rotating shaft 21 is supported by a slider 24 provided on the lower surface of the chassis 19. This slider 24 is slidable along the lower surface of the chassis 19 as described in FIGS. 2 and 3, and has a lever 25 attached to one end.
The other end of 5 is connected to a driving means (not shown) for rotating the lever 25 in the direction of arrow A-B. Using a device t that converts the rotational motion of the driving means into a linear motion, the motor may be moved in the direction of arrow A or B by rotating the motor forward or backward. Also, player jacket insertion 1:
]1'7 (not shown in FIG. 4) is a pair of guide rails 301, 302'4 for guiding the shaker) 11 onto the turntable 20.
The Kiterail 301 and 302 Oshu 5
In addition, there is a chucking device #27 installed perpendicular to the insertion direction of the jacket 11. This chucking device 27 was developed by the patent applicant on May 9, 1156.
The one shown in Japanese Patent Application No. 1983-69829, filed in 1983, may be used. Even if it is another chucking device,
However, (even if this is the case, it has no bearing on the gist of the present invention, so a detailed explanation will be omitted.
A plurality of the above-mentioned supports 26 are arranged around the periphery.

A pickup arm 31 is separately provided on one side of the turntable 20 so as to be movable in the radial direction of the turntable 20, and a cartridge is housed in the arm 31. The cartridge contains the well-known μ
Eyes (with stylus attached). An arm feeding mechanism is provided to move this arm 31. This mechanism consists of a carriage 32 fixed to one end of an arm 31. Motor 33.
Deceleration means by tooth frame 34. Pulleys 35, 36, wire 37 hooked up to the bow. and carriage 321;
Y supporting guide ball consists of 3 days f'1. , the rotational force of the motor 33 is transmitted to the wire 37 via the deceleration means 34.
The wire 37 rotates to convey the carriage 32 along the guide rail 38. Therefore, the pickup arm 31 can move in the radial direction of the turntable 20. Similarly, the arm feeding mechanism described above is supported by a sub-chassis 39 mounted on the chassis 19, and an Ail Nt kite rail 302 is also mounted on the sub-chassis 39. The other guide rail 30] is attached to the sub-chassis 40. Further, a belt 4 is provided on the chassis 19 to rotate the turntable 20 at the same time.
1 and a pulley (17J 42) are provided, and the pulley 42 is rotated by a motor (not shown), so that the turntable 20 is rotated simultaneously via a belt 41.

Next, a shutter device, which is a feature of the present invention, will be explained.

The shutter device is located inside the player's jacket 1L4.
It has a first shutter 51 that closes one person [ ] 17 and a second shutter 52 that is located at one side of the shutter 51 .

The cross section of the first shutter 51 in the transverse direction is shown in FIG.
0), and a notch 511 is formed near the longitudinal end (at the lower end).The first shutter 51 is attached to the sub-chassis 39 at both ends in the longitudinal direction.
．． Arm 512,513 for rotatably supporting 40
It is formed by Y-bending and grinding. The distal end of one arm 512 is rotatably attached to the sub-chassis 39 with a bottle or the like, and the middle section of the other arm 513 is similarly rotatably attached to the sub-chassis 40, and the distal end is attached to the sub-chassis 39 by a spring 53. As the chassis is pulled in 19 directions, the force of the spring 53 (18) biases the first shutter 51 so that it rotates approximately 19 degrees. Insert both ends of the first shutter 51 r-11'i' 11111 then 1'lt
7'L (cam 5 with curved protruding surface 1)
, 4.51.5th order, Torii, 1st year.

゛The cross section of the second shutter 52 on the short side has a step structure as shown in Fig. 5 (0), and on both ends (on the long side)
This second shutter 52 is formed with bent arms 522 and 523 for rotatably supporting the sub chassis 39 and 40. These arms 522 and 523 are the first
The shutter 51 is rotatably mounted on the sub-chassis 39.40 together with the IN 512.513 of the shutter 51 using a bottle or the like. An attachment piece 524' is roughly bent and extended toward the end of the arm 522 toward the player side.

A cam 54], 542'i pawl is attached to the inner N4 portion of the second shutter 52 a little closer to the center than the cam 5, 4.515 provided on the first shutter 51.

These cams 54 and 542 are inserted as shown in the figure [17-1]
It has a diagonal direction upward to the right from 111. -f 7 first
A convex cover (1g) =55 facing the notch 5]-1 of the shutter 51 is fixed so as to close this notch 511. 2), and the lower end of the shutter 52 of 2) t-/hj is integrated with a bottle! :+6 is taken 4=l tl, and this 1 of the second shutter 52
A bottle 5'7 is also provided on the surface near the medium heat, and the cam 541 is slightly more centered than the IM. ”4 in two
(I'm trying to attach the spring 58%"i1M).This (Shibane 5B's own mountain is 1 width, and the jack is from the mouth 17.
The insertion point is curved so as to strike against the oil passage.

On the other hand, a hole 19] is formed in the chassis 19 near the 1) γ position of the front d1 slider 24 on the side of the insertion opening. A bent lever 59 is rotatably mounted on the chassis 9 by means of a pin 60.

One end 591 of this lever 59 is bent so as to be inserted into the front hole 91, and the other end 592 is bent in the opposite direction to the first end 591. An upright portion 593 is formed on the side surface of the one end 591 of the chassis 19, and the distance between the upright portion 593 and the cut-and-raised portion 192 formed on the chassis 19 is such that 61 springs can be used.

(20) Therefore this V] Spring 6] v) By force -9 part 59
1 is always pulled towards V = 24. Stopper on the 011 chassis 19 near the previous n1 crystal 1M1t592]-93 and aul raised? is forming.

This stopper] 93 is for regulating the range of rotation i1+b of the lever 59.

Other than the i+it s of the lever 59 of the box octopus! Akira 592-1
1) After a short distance, the locking member 62 is installed.

This plug member 62 has a long hole 62 approximately in the center between the longitudinal sides.
1 has been broken down, and one end is equipped with a switch section III (2), and the other end is equipped with an Arotsuka-623. This locker 621
5 is located slightly above the top surface of the chassis 19 by 20 degrees. Zoraniko's locker 623 and former I's costume 621
There is an arcuate hole 624'% in the lateral direction in the part between. A protrusion 625 is provided on the front side of the locking member 62 opposite to the bar 59, and a spring 63 is formed at the opening 1 between the protrusion 194 and the protrusion 625. 1 color so as to hook it.

This locking member 62 has a length of 14fl o[: the pin 64 is inserted into the elongated hole 62.1)11, and this pin 64 is inserted into the hole i/l1m formed in the chassis 19 (21). Using this bottle 64 as a fulcrum, the O 62 rotates and slides within the length of the elongated hole 62. In addition, the previous half was 1-0.
24- is 11iTiU', and the second shutter 52v is attached to the bin 56 or 11.A) is also σ).

On the upper surface of the Ushida chassis 19, the Ail of the locking member 62 is provided.
For switch system side 1 part 622 ↓(・',, then switch 615 is month 1! 62 slides to allow the user to use the device.

7E et al. Fit+Yoshiki L/Lock the other end 592 of the bar 59] Removal member 66 is 1644.1 Kerano 17-).

This part +li4'66 has a bent shape 8' bV, l- Its center is rotatably attached to the other end 592 of the lever 59 U
Moreover, a weight screw 67 is attached to one end, and the other end faces toward the long car 623 of the locking member 62. The bottle 5'7 provided on the second shutter 52 faces the upper surface of the other end of the lock release gun 66).

(22) When the shutter device shown in FIG. 4 is assembled, its main part will be as shown in FIG. 5. In FIG. 5, (a) is a plan view, and (b) is a vertical relationship between the lock release member 65 and the locker 623? (Q) is a side view clearly showing how the locking member 62 moves with respect to the movement of the first and second shutters 51 and 52.

Regarding the operation of the shutter length of one shift according to the present invention, Fig. 5~
Examine No. 7 No. 1 and clarify the acid.

Before the V-jacket 1 inside the housing sprayer 16 is removed, it is in a state similar to the solid line in FIG. 5, as shown by the solid line in FIG.

In this state, the turntable 20 has been lowered as explained in FIG.
Figure 5 (a) against the force of spring 61α).
) is rotating in the direction of arrow C. , -I and lever 59
The other end 66 of the lock release member 66 with several digits on the other end 592
2 is mounted on the bottom surface of the locker 623 of the lock system 62. The locking member 62 of C is located in the position where the second shutter 52 is lowered by its own weight, as shown in FIG. 5(C).
Pushed by the bottle 56, the locker 623 is located at a distance of about 1 m inward from the lower end of the first shutter 51. The left spring 58 attached to the second shutter 52 protrudes into the insertion passage of the jacket 11.

In this state, the jacket 11 passes through the insertion port 17,
When inserted, the cam 5 provided on the first shutter 51
14.515, and acts to lower the first shutter 51 downward. (Indicated by a two-dot chain line) [7] Therefore, the first shutter 51 opens.

At this time, the locker 623 does not pose any obstacle to the 8gl shutter 51.

Then, when Jacket 11 is inserted into ζ and others, the fifth
As the leaf spring 58 is lowered downward as shown by the two-dot chain in FIG. Along with this, kfl how many pieces 524
The pin 56 causes the locking member 62 to slide ζt' in the direction of the first shutter 51 (in the direction of the arrow in FIG. 5C (24)). As described above, the range of this slide is within the length of the elongated hole 62].

Then, the jacket 11 is inserted into ζ and the spine 13 is held by the chucking device 2'7. Then, when the jacket [1] is pulled out, the disc 15 and spine 13 are loaded into the player 16. At the same time as the jacket 11 is pulled out, the locker 623 of the locking member 62 protrudes at a position opposite to the lower end of the first shutter 51. When this friend shutter 51 tried to open, it hit the locker 623 and could not be opened, but by pulling out the jacket l-11, the first
Since the shutter 51 rotates upward, the locking member 6
2 no longer contacts the first shutter 51,
The force of the bottle 56 causes it to protrude further. Therefore, the first shutter 51 will be lowered from the moment the jacket 11 is removed.

This state is shown in the sixth column (c). FIG. 6 shows the state after the jacket 1-11Y has been taken out, and the intermediate layer of the leaf spring 5B is pressed by the spine 13.

That will happen. Similarly, it is preferable to provide a means to prevent the spine 13 from rising due to the repulsive force of the leaf spring 58.

The turntable 20 is then raised until the playback operation begins. That is, the slider 24 is in the direction of arrow B in FIG.
Therefore, as the slider 24 moves, one end 591 of the lever 59 is pulled to the pi, 61, and the slider 24 is moved in the direction of movement (FIG. 6(a)) with the bottle 60 as a fulcrum. (in the direction of arrow E), and the other end 592 rotates in the direction of arrow l:fJE'. However, when the other end 592 of the lever 59 comes into contact with a stopper 193 formed on the chassis 9, its movement is restricted. This rotation of the lever 590 also moves the lock release member 66, and as shown in FIGS. 6(a) and (kl), the locker 6
Stay away from 23. At this time, one end 6 of the lock release member 66
61 is lowered by the weight (23) of the screw 67 as shown in FIG. 6(1)). Therefore, the other end 662 is at a height opposite to the locker 623.

During the playback operation, the first shutter 51 is locked by the locker 623 and cannot be opened.

Now, when the playback operation is finished, the slider 24 is moved to the second position again.
In the direction of arrow A! III. As shown in FIG. 7(a), one end 5914 of the lever 59 is pushed again by the slider 24, and the bottle 60'l is rotated.

Then, the other end 662VC of the lock release member 66 attached to the other end 592 of the lever 59 moves the locker 623 toward the arrow F.
When the lock member 62 is pushed in the direction ζ, the lock member 62 rotates with the pin (, 64 as a branch).By this rotation of the lock member 620, the locker 623 moves to the position of the notch 511 of the first shutter 51. It turns out.

In this state, if an empty jacket 11 is inserted, the first shutter 51 can be opened. That is, since the locker 623 is located at a position corresponding to the notch 511, the first shutter 51 opens without colliding with the locker 623.

(27) The spine 13 and the disk 15 are accommodated therein, and the spine 13 is held or released by the chucking device 27.
11. According to a message from jacket 11, disc 15 and spine 13 are stored inside jacket 11.
can be taken out from the player 16. When the jacket 11 is taken out, the second shutter 52 will be lowered by itself, or at this time, the hinge 57 will press the top surface of the i/1fj 662 in addition to the lock release member 66. ! M
662 descends below the locker 623 and is disengaged from the lock member 62 -8-. 1 second shutter 5
2 moves down, the bottle 56 also moves, so the locking member 62 is pushed inward, returning to the state shown by the solid line in FIG. In this way, the action is reversed.

Further, the switch 65 is a switch-type switch according to the movement of the locking member 62, and can be used to indicate a state in which the jacket 11 can be inserted.

Further, in FIG. 4, a stylus cleaner 10 is provided on the chassis 19 near the kerato insertion terminal end. This cleaner '10 has a cleaning cloth '702 attached to one end of a bent metal fitting 701, and is rotatably attached to a predetermined point on the chassis 19-hi by means of a binding cloth '702 in the center of this metal fitting 701. A spring '104 is attached around this bottle 703, and this spring 704K causes the cleaning cloth 702 to
is always biased so as to oppose the insertion direction of the jacket. Then, the cleaning cloth 702 is pushed by inserting the jacket 11, and the stylus inside the pickup arm 31 is cleaned by this cloth 702.

Similarly, the state shown in FIG. 7 described above indicates that the jacket 11 is inserted again after the playback is finished, but at this time, since the disc 15 is loaded in the player, it is possible to insert an empty jacket 11. , other discs, spine storage jacket insertion (double insertion)
needs to be prevented. Ill prevent this double matchmaker! l
@y1' The second shutter 52 performs this. Tsugaya No. 8
As shown in the figure, the pressure and vibration (29) - When the disc 15 is already loaded in the jacket ζ11, the jacket 11 in which the other disc and spine are housed
When the spine is about to be inserted, the spine cover 14' collides with the front edge of the second shutter 52, preventing the insertion.

On the other hand, when an empty jacket 11 is inserted as shown in FIG. In order to push the button downward, the second shutter 52 rotates downward, making it possible to insert the bond jacket 11. This way, double insertion can be prevented.

The shutter device of the present invention operates as described above, and the first shutter 51 can prevent foreign matter such as dust from entering through the insertion port 17, and the second shutter 52 can prevent foreign matter from entering through the insertion port 17. Insertion can also be prevented. Roughly speaking, as described in Figure 6, after loading the disc, the moment the jacket 11'ff is taken out, the first
jacket 119 to lock the shutter 51 of
(30) Re-insert the jacket 11 to drain the blood that was removed (30).Even if someone tries to do so, it will prevent the jacket from colliding with the turntable. -t*+1+
During the afternoon, you can avoid @ by inserting a jacket as shown in Figure 6.

In this way, we can provide a shutter device with high safety and reliability.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the outer release of record 1 "J disc set 1 cow armor -", and Figures 2 and 3 schematically show the operation of record disc ladle restraint brass. Internal structure of the raccoon to be explained C] Sectional view, No. 4
The figure shows the shutter device in the recording disc internal recording device of the present invention?
(a) is a plan view of the main part; (a) is a plan view of the main part; (a) is a plan view of the main part; b+ is a front view showing the movement of the unlocking member, (C) is the main part 1141
A first view is shown, and FIGS. 8 and 9 are perspective views of the second shutter operation. DESCRIPTION OF SYMBOLS 11... Jacket, 151... Disc (warm) ]-6... Playback device, 17... Jacket insertion slot, 2011 turntable, 24... Slider for raising and lowering the turntable, 26...
・Support body, 51...W, 1 shutter, 52・
...Second shutter, 5B...Plate spring, 59.
...Lever, 62...Lock member, 66...Lock lit Exobe Ishi ('i'31'7) Patent attorney Nori Chika Keisuke (and 1 other person) (32)

Claims (4)

[Claims] (1) The recording disc can be stored in the jacket, and the recording disc can be inserted into the jacket's playback device through the insertion hole and taken out from there. A shutter device for a recording disc playback device, which includes a shutter in the playback device that allows the shutter to be closed or opened, the shutter being installed in the playback device to close or open the shutter. Turn tape/L that allows a disc to be placed on the top surface of the turntable. When the disc is not in play, the recording disc is moved away from the top surface of the turntable. means placed on the top surface of the turntable, and movable with respect to the shutter to a position that prevents and locks the shutter from opening, or to an unlocked position that allows the shutter to be opened, and a method for moving the shutter. The knock member is rotatable in a direction substantially perpendicular to the center, and the front 61 lock member is rotatable before inserting the front jacket when the recording disk is not loaded. Set the shutter in the non-locked state, and insert the jack to bias the locking member in the locking direction. After σ) Locking member # for moving the locking member to the locking position almost simultaneously with removing the jacket.
1) Lock the locking member against the shutter while the recording disc is placed on the top of the turntable. When the lock member is placed on the holder w, is moved away from the mounting surface from the open state, and transferred to the iγ position, the lock member is rotated in a direction substantially perpendicular to the direction of movement. tp# that the shutter is equipped with a lock plate that can be moved to an unlocked position with respect to the shutter.
This is a shutter device in the η1 recording disc glueing device. (2) The means for holding the Fir' at a position apart from the upper surface of the turntable or placing it on the upper surface of the turntable is a support for supporting the outer peripheral portion 4 of the recording disk. , is equipped with an elevating device nail that raises and lowers the front turntable at a position higher than the support surface of this support, or at a position higher than 1) L. When the turntable is in the raised position, the front i1 recording disk Placed on top of turntable @
Claim 11 is characterized in that the lock release member moves in response to the up-and-down movement of the turntable, and the rotation of the lock member (11) is controlled. Item 1 contains the shutter assembly included in the 01-1 H self-recorded disc. (3) The shutter is arranged such that the first shutter part I is inserted [111jll] with respect to the first shutter part I and the second shutter part 4', A'ff said insertion 1]. 'Overlapping arrangement It L, part of the shutter of the above] (
A is opened by the front B self-locking member) JyI7) Standard ful
When the recording disc is not loaded or unloaded, the first shutter can be opened together with the first shutter member;
Claim 61-61, characterized in that an empty jacket can be inserted when the recording disk is loaded and the first shutter member is in a state where it can be opened. No. 1 Mrj Recording Disc Ze'' Shutter device that can be used to stitch raw bamboo. (4) The 11ft rirj locking member moving means includes a leaf spring whose one end is attached to the second shutter member and whose other end is bent in a V shape so as to protrude into the matchmaker passage of the jacket. Baneke publication 1~
So drunkenness 4. The second shutter part is rotated, and this rotation part is used for the first locking part.
A shutter device in a rhyme disc playback device as set forth in claims 1, 2, and 3, characterized in that the shutter is arranged in a manner similar to that of the previous claim.