JP2721055B2 - Disk cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION The present invention relates to a
The disc is rotatably stored in the cartridge,
HAt least one ofOpening in U-shaped sectionofSha
To open and close in the disc player.
To open the shutter by insertingthe aboveOpen opening
LetOpening aboveInsert a head into the
Related to disk cartridges for playing and / or reproducing
It is. [0002] 2. Description of the Related Art Conventionally, a disk cartridge of this kind has been used.
Is a stainless steel shutter with a U-shaped cross section.
Etc., and cut and raised inside the metal plate
Engaging the guide pieces provided in the upper and lower halves,
The guiding action by the guide piece and the guide groove
So that it slides along one end of the upper and lower halves.
There were many things that did. [0003] [Problems to be solved by the invention]
In such a conventional structure, the guide is guided each time the shutter reciprocates.
The guide grooves of the upper and lower halves are cut off by the piece.
Said that the shutter would not slide smoothly
The life was short. Also, the guide piece comes out of the guide groove
It comes off and the shutter accidentally falls off the cartridge
It is necessary to have a fall prevention structure to prevent
Then, assembling the shutter to the cartridge and
There were defects that could not be easily disassembled. According to the present invention, the shutter slides very smoothly.
Not only can it be
Very easy to assemble and disassemble shutters
In addition to being able to do it, appearanceIs a good disk cartridge
The main purpose is to provide. The present invention relates to a cartridge comprising upper and lower halves.
The disc is rotatably stored in the
At least oneToAn opening for inserting the head is provided.Thin plate
ConditionWith shutter platethesePair ofThin plateShutter plateMutual
InconnectThin plateThe cross section consisting of the side plate is almost U-shaped
Above shutterFor head insertionOpen and close the opening
In the disk cartridge configured in
Ridge'sOne endalongThis cartridgeGuide part
Provided,Provide a sliding member that slides along this guide
Along withThe above thin side plateScrewInsertion holeWiththe above
Pair ofThin plateInsert the cartridge between the shutter plates
As ifToOf this cartridgeOne endFrom above
Jatterthe aboveMates with cartridgeLet methe above
Thin plateOf side platethe aboveThis fitting into the screw insertion holedirectionPenetrated into
The screw aboveSliding memberToFrom that sideScrew it on
So that the shutter is fixed to the sliding memberMake up,
The thickness of the sliding member in the fitting direction is
In this state, the tip of the screw protrudes from the sliding member.
Large wall thicknessDisc cartridge
Pertaining toIt is. [0006] According to the present invention, the cross section is substantially U-shaped.ofShutterThin
Plate shapeSide plateLarge wall thickness in the axial direction of the screwSliding
Screw on the side of the member from the direction parallel to the upper and lower surfaces of the upper and lower halves.
Since it stops, the thickness of the cartridge in the vertical direction
Use the depth in the direction perpendicular to the
Screw for attachingThickness of this screw in the axial direction is large
It can be screwed into the sliding member, and its screw length is
It does not affect the thickness of the cartridge. Also,
JatterLarge wall thickness in the axial direction of the screwSliding part
The material can slide very smoothly along the guide portion.
When considering good sealing performance with this type of cartridge
If the upper and lower halves adopt a method such as bonding
It is easy to solve, but the seal
Good should put in mind the frequent replacement of shutters
is there. And the main source that screwed the shutter
The above configuration of Ming makes the frequent replacement of the shutter extremely
It can be done easily and reliably. [0007] BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An example will be described with reference to the drawings. In this embodiment, the draw
Optical type and light called disk (DRAW / DISC)
Writing (recording) and reading (reproduction)
Both use disks that can be used. First, as shown in FIG. 1, FIG. 2 and FIG.
The disc cartridge 1 is made up and down of a synthetic resin or the like.
The disk 5 is placed in the cartridge 4 including the halves 2 and 3.
It is housed horizontally so that it can rotate freely, and
2 and 3 are fitted from above and below and fixed with screws etc.
I have. Note that this disk cartridge 1
So-called A and B both sides with recording surfaces formed on the upper and lower sides
The disk cartridge is configured. Next, the upper and lower halves 2 and 3
A pair of upper and lower circular center openings 7a, 7 corresponding to the center hole 6.
b and a pair of upper and lower portions connected to both central openings 7a and 7b.
And rectangular front openings 8a and 8b (see FIG. 12) are provided.
Have been. The front openings 8a and 8b are for inserting the head.
Opening on the front end 4a side of the cartridge 4
Is provided at the center position of. The disk 5 is, for example,
By a number of ribs 9 provided integrally on the inner surface of the lower half 3
Therefore, the outer peripheral position is regulated. In addition, cartridge 4
At the left and right end portions 4b, a disc player (not shown)
Cross section used when mounting on
A pair of guide grooves 10a and 10b are provided, and the front end 4
a pair of left and right positions in the disc player
Left for inserting into positioning pins (not shown) for positioning
A pair of right positioning pin insertion holes 11a and 11b are provided.
ing. Left and right ends of the rear end 4c of the cartridge 4
Is automatically loaded and automatically ejected to the disc player
Used for (Auto Loading Eject)
Left and right notches 12a and 12b are provided.
You. Next, FIG. 1, FIG. 2, FIG. 11 and FIG.
Shutter that opens and closes a pair of upper and lower front openings 8a and 8b
A description will be given of the mounting structure of the bracket. First, the shutter 14 is made of, for example, stainless steel.
Molded with a metal plate such as a plate or a hard synthetic resin
The cross section is almost U-shaped, and a pair of upper and lower
The shutter boards 15a and 15b and these are integrally connected on the side.
And a side plate 16. And car
The middle part 1 of the upper and lower halves 2 and 3 at the front end 4a of the cartridge 4
A guide shaft 18 serving as a guide portion is horizontally installed in the inside 7.
The guide shaft 18 is made of a synthetic resin or the like.
A member 19 is slidably mounted. Sliding member
The side surface 19a of 19 is exposed outside the upper and lower halves 2, 3.
You. Also, the upper and lower halves at the front end 4a side of the cartridge 4
A pair of upper and lower recesses 20 are formed on the upper and lower outer surfaces 2a and 3a.
a and 20b are provided. Next, when attaching the shutter 14,
Moves the shutter 14 from the direction of the arrow a shown in FIG.
Inserted outside the front end 4a of the cartridge 4 as shown in FIG.
LikeLaminarUp and down shutter plates 15a, 15b
The upper and lower recesses 20a and 20b are covered from above and below. And this
After, of shutter 14LaminarProvided on the side plate 16
Insert a pair of left and right screws 22 into the pair of left and right screw insertion holes 21
The side plate 16 is inserted into the sliding member 1 by the two screws 22.
9 on the side surface 19a. In this case,Both screws
As for 22, a self-tapping method may be used,Sliding
A pair of metal nuts are inserted when molding the member 19 with synthetic resin.
Can be moldedIt is. Therefore, FIG.
According to the screw fixing structure shown in FIG.
The side surface 19 of the sliding member 19 in the left-right direction in FIG.
The thickness at the portion a is larger than the length of the shaft portion of the screw 22.
Because the shaft of the screw 22 slides on the thin side plate 16
The inside of the member 19 and the thick side wall 19a are completely
The tip of the screw 22 is completely buried.
No protrusion from 19. Also, the side of the sliding member 19
Since the thickness at the surface 19a is large, the sliding portion
The material 19 is attached to the guide shaft 18 at the side 19a.
Along the long term and very stable
One can surely slide. And, as described above, it is attached to the sliding member 19.
The shutter 14 is guided by a guide shaft 18.
To the closed position shown in FIG. 1 (both shutter plates 15a, 15a).
b closes both front openings 8a, 8b from above and below)
The opening position shown in FIG. 2 (both shutter plates 15a and 15b
(Position moved to one side of both front openings 8a, 8b)
It is opened and closed by sliding in the directions of arrows b and c,
You. It should be noted that the shutter constructed as described above
According to the mounting structure, after assembling the upper and lower halves 2, 3,
The shutter 14 is moved from the front side in the direction of arrow a in FIG.
It is only necessary to insert and fasten the screw.
If it is withdrawn at 11 on the rear side in the direction of arrow d, the upper and lower half
Since it can be disassembled up and down,
Very easy to assemble and disassemble the jaws 4 and shutter 14
It is.This is because of the frequent replacement of the shutter 14
This is especially important if you need That is, shutter 1
Since the screw 22 is used for attaching the sliding member 4, the sliding member 19 is used.
There is almost no risk of damaging the side. Also shutter
-14 is inadvertently detached from cartridge 4
Hardly occurs. In the present invention,cart
Using the horizontal depth of the ridge 4, place both screws 22 sideways
Structure to be screwed in from the horizontal directionBecauseBoth screws 2
2 does not affect the thickness of the cartridge 4
It is easy to make the cartridge 4 thin. The shutter 14 is
Attached to a sliding member 19 guided by the
The shutter 14 is poled in the directions of the arrows b and c.
Can slide smoothly. In addition, the guide shaft 18 is
The upper and lower halves 2 and 3
It is concealed from above and below, so the appearance is very good. Next, referring to FIGS.
The support device for the disk 5 in the inside will be described. First, as shown in FIG. 1 and FIG.
Four corners of the disk 5 are supported at four corners in the half 3.
Four supporting members 24a to 24d are attached.
You. These support members 24a to 24d are made of synthetic resin or the like.
Molded left and right pairs 24a and 24b,
24c and 24d are symmetrical to each other. And
These support members 24a to 24d are as shown in FIGS.
A fan gear 26 is attached to the support 25 having a substantially rectangular cross section.
Provided at the center of the sector gear 26
For example, one of the four corners in the lower half 3 is
It is inserted into four fulcrum shafts 28 provided on the body. So
These support members 24a to 24d are shown in FIGS.
As shown, each of the outer circumferences 5a of the disks 5 is indicated by a solid line.
About 90 between the support position and the non-support position indicated by the dashed line.
It is configured to be rotatable in the directions of arrows e and f at a rotation angle θ of °.
ing. In addition, as shown in FIG. 5 and FIG.
In FIG. 7, the lower pair of support pieces 25a and 25b
A pair of upper and lower tapered surfaces 29 is provided at the end,
Also, as shown in FIG.
Is provided. And FIGS.
As shown in FIG.
b, a pair of upper and lower fan-shaped recesses (counterbore) provided in 3b
31 and 32, and rotated in the directions of arrows e and f.
It is configured to: Next, the disk 5 constructed as described above
According to the support device, for example, when storing the disk cartridge 1
When not in use, as shown in FIG.
24a to 24d are all rotated in the direction of arrow e to support positions.
And these support portions 25 are shown in FIGS.
Inserted above and below the outer periphery 5a of the disk 5 as shown by the line
Between the pair of upper and lower support pieces 25a, 25b.
Four portions of the outer periphery 5a are sandwiched and supported from above and below. This
As a result, as shown in FIG.
Clearances 33, 34 up and down with respect to the inner surfaces 2b, 3b of 2, 3
Floating in the upper and lower middle positions of the upper and lower halves 2 and 3
It is supported in the state where it was done. Therefore, the disk cartridge 1 is not used.
At times, it is suspended between the upper and lower halves 2, 3
Disc 5 is vertically and horizontally within the upper and lower halves 2 and 3.
Cannot move (flutter) in any direction
Therefore, the movement causes the upper and lower recording surfaces of the disk 5 to move.
It collides with the inner surfaces 2b, 3b, etc. of the upper and lower halves 2, 3, and is damaged.
And no unpleasant collision sounds are generated. It should be noted that the disc cartridge 1 is
When mounted on the layer, the four support members as shown in FIG.
24a to 24d are all rotated in the direction of arrow f and are in the unsupported position.
6 and FIG.
It is detached from the outer periphery 5a of the disk 5 as shown by the dashed line.
Thus, the support of the disk 5 is released. And FIG. 3 (B)
As shown in the figure, the disc cartridge 1 is
A predetermined cartridge in the disc player is
The center opening of the upper and lower halves 2, 3
Turntable 40 inserted from above and below into 7a, 7b
Around the center hole 6 of the disk 5
The sides are clamped from above and below. And this disk car
Even when the cartridge 1 is in use, the disc 5 remains in the state shown in FIG.
As shown, the upper surfaces 2b, 3
The upper and lower halves 2, 3 are provided with gaps 33, 34 below.
Turn table 40
Is driven to rotate. By the way, the support device for the disk 5
Then, each of the four support members 24a to 24d is
Rotation system that rotates in the directions of arrows e and f around the center
Therefore, these support members 24a to 24d
5 can be inserted diagonally to the outer circumference by circular motion
Since it is possible, the supporting member 2 for the outer periphery 5a of the disk 5
4a to 24d can be inserted very smoothly. Also 4
The support members 24a to 24d are simply referred to as links 4 described later.
7a, 47b, etc.
The holding members 24a to 24d are interlocked very easily to
It can be turned smoothly and the mechanism is very simple
Become. In particular, as shown by a solid line in FIG.
When 24a to 24d are pivoted to the support position, these
The support portion 25 has a tangent P to the outer periphery 5a of the disk 5.₁Against
A substantially perpendicular reference line P_TwoConfigured to be located above
However, with this configuration, the support members 24a to 24d
Even if the rotation angle θ varies, the outer circumference 5a of the disk 5
Insertion amount l of the support portion 25 with respect to₁Changes greatly
There is no. Therefore, the rotation angle θ of the support members 24a to 24d is
Due to the variation, the support portion 25 is placed on the outer periphery 5a of the disk 5.
Inserted more than necessary, damaging the recording surface of disk 5
There is no such thing at all. Further, as shown in FIG. 6 and FIG.
4a to 24d support portions 25 are attached to upper and lower halves 2, 3 inner surfaces 2
b, 3b.
In addition to the above, a pair of upper and lower support pieces 25a, 25
b is provided with a tapered surface 29, and the outer periphery 5a of the disk 5 is further provided.
By providing the tapered surface 30 as well,
When the disc 5 is inserted into the outer periphery 5a of the disc 5 in the direction of arrow e
In addition, the tape 5 by these tapered surfaces 29, 30
The outer circumference 5a is extremely small between a pair of upper and lower support pieces 25a and 25b.
The outer circumference 5a of the disk 5
Damage or inability to support the disc 5
The disk 5 is supported by the support members 24a to 24d.
Can be supported and floated extremely smoothly and reliably
You. Next, FIG. 1 to FIG. 4 and FIG.
Of the shutter 14 and the four support members 24a to 24d
The driving mechanism will be described. First, as shown in FIG. 1, FIG. 2 and FIG.
In front of a pair of left and right guide grooves 10a and 10b of the cartridge 4
A pair of left and right sliding members molded with synthetic resin or the like on the end side
43a, 43b slide in the direction of arrow g, h, which is the front and rear direction
Mounted freely. These two sliding members 43
a, 43b are bilaterally symmetric and have both guide grooves 10
a, a pair of left and right slides provided along the groove bottom of 10b
Both guide grooves 10a, 10b are provided along the grooves 44a, 44b.
Arrows g and h within a range of approximately 1/2 length on the front end side of
Is slid. And these two sliding members 43a, 43b
A pair of parallel racks 45a and 45b are integrated inside the
Is provided. The shutter 14 is attached
The rack 46 is also provided integrally inside the sliding member 19
Have been. The four support members 24a to 24d
The left and right pairs 24a and 24b, 24c and 24d are combined
A pair of left and right links 47a, 47b formed of resin or the like.
Are connected to each other. In this case both links
47a and 47b are also symmetrical,
The ends are fan-shaped support members 24a and 24b, 24c and 24d.
Pivotally connected to the gear 26 via a pair of pins 48a, 48b
Have been. The rack 4 of the one sliding member 43a
5a and sliding member 19 to which shutter 14 is attached
And four racks 46 as shown in FIGS. 1, 2 and 8.
By the gear train 50 including the gears 49a to 49d
Are linked. The rack 4 of one of the sliding members 43a
5a and a sector gear of the support member 24a on one side and the front side
26 are linked via gears 49a and 49e.
In this case, the gears 49a, 49b and 49e are integrated gears.
Gears 49a, 49b and 49
And 49e and the other two gears 49c, 49d
Three support shafts 5 provided integrally on the inner surface 3b of the half 3
1a, 51b, and 51c, which are rotatably mounted.
You. The rack 45 of the other sliding member 43b
b and the sector gear 2 of the support member 24c on the other side and on the front side
6, two gears 53 as shown in FIGS.
a, 53b and gear train 54
ing. The gears 53a and 53b are arranged between them.
And the gear 53c placed therewith is configured as an integral gear,
Another gear 55 is meshed with the gear 53c. So
The integrated gears 53a, 53b and 53c are
And 55 are provided integrally on the inner surface 3b of the lower half 3, for example.
Rotatably attached to the two support shafts 56a, 56b.
Have been. The integral gears 49a, 49b and 49e
And 53a, 53b and 53c are the same parts.
You. And, it is arranged in the middle of the gear train 50.
Gear 49 and gear trien 54
Gear 55 is the same part formed of synthetic resin or the like.
And a pair of torsion springs 57
a and 57b are attached. That is, as shown in FIG. 9 and FIG.
9c and 55 are inserted around the outer periphery of the support shafts 51b and 56b.
The boss 58 and an annular rib 5 provided on the outer periphery of the upper surface
9 are provided integrally, and the boss 58 and the rib 59
An annular concave portion 60 is formed between them. While both
The torsion springs 57a and 57b are, for example, torsion coil springs or spirals.
These torsion springs 57
The torsion acting portion 61 in the form of a coil of FIGS.
Is wound around the inside of the recess 60. And these
One end 62a of the torsion springs 57a, 57b is
5 is locked by a spring locking portion 63 provided at the other end 62b.
Is, for example, a pin integrally provided on the inner surface 3b of the lower half 3.
And the like. Then, the torsion of both torsion springs 57a and 57b
The two gears 49c, 5c
5 is urged to rotate in the direction of arrow i in FIG. And both
The rotational power of the gears 49c and 55 is transmitted through the gear trains 50 and 54.
Rack 45 of sliding members 43a, 43b and 19 through
a, 45b and 46 and a fan of both support members 24a and 24c
The pair of left and right sliding members 43 are transmitted to the
a and 43b are urged to slide in the direction of arrow h in FIG.
The shutter 14 slides in the direction of arrow b in FIG.
A pair of left and right support members 24a, 24 on the front side
c is rotationally urged in the direction of arrow e in FIG. Note that the rear side
A pair of left and right support members 24b and 24d
a, 47b, a pair of left and right support members 24 on the front side.
a, 24c, these left and right sides
The pair of support members 24b and 24d also move in the direction of arrow e in FIG.
It is biased to rotate. Note that, as shown in FIG.
The upper end member 58a of the fifth square boss 58 is the inner surface 2 of the upper half 2.
b is inserted into a circular recess (counterbore) 65 provided in
ing. Next, the driving mechanism configured as described above is used.
If it is not used, such as when storing the disk cartridge 1,
In this case, as shown in FIG. 1, both sliding members 43a and 43b are
The cartridge 4 is slid in the direction of arrow h to the front end 4a side of the cartridge 4.
Has been reactivated. And in conjunction with this, shutter 1
4 is slid in the direction of arrow b and returned to the closed position,
As shown in FIG. 12, both shutter plates 15a and 15b
Both front openings 8a, 8b are closed. Same as this
As shown in FIG. 1, the four support members 24a to 24d
And the disk 5 is moved up and down as shown in FIG.
It is supported in a state where it is suspended in the upper and lower middle positions of the halves 2 and 3.
Have been. Next, the disk cartridge 1
It is used by being attached to the player, at this time, as shown in FIG.
As shown, the disc cartridge 1 is placed in the disc player.
When inserted horizontally in the direction of arrow j, it will be inserted into the disc player.
A pair of left and right release projections 67a, 67b are provided.
A pair of left and right guide grooves 10a, 10b and
And are relatively inserted into the sliding grooves 44a and 44b. Do
And these two releasing projections 67a, 67b are a pair of left and right sliding
The members 43a and 43b are connected to two torsion springs 57a and 57b.
Push in the direction of arrow g against the force, and both racks 45a, 45b
Drive both gear trains 50,54. That is, one rack 45a is a gear train.
The 50 gear 49a is rotated in the direction of arrow k. Then, Gi
Gears 49c and 49d move in the directions of arrows m and n, respectively,
And the rack 46 is driven by the gear 49c.
And the shutter 14 is moved in the direction of arrow c through the sliding member 19.
The cartridge 4 is slid in the
Both front openings 8a and 8b are opened. Also at the same time
At the front side via the sector gear 26 by the gear 49e.
Is rotated in the direction of arrow f, and
The link 47a is slid in the direction of arrow o, and the other support on the rear side is
The holding member 24b is also rotated in the direction of arrow f. The other la
The hook 47b moves the gear 53a of the gear train 54 in the direction of the arrow q.
, And forward through the sector gear 26 by the gear 53b.
The other support member 24c on the part side is rotated in the direction of arrow f,
The other link 47b is moved in the direction of arrow r to
The other support member 24d is also rotated in the direction of arrow f. This
Thus, the four support members 24a to 24d are simultaneously moved by the arrow f.
The support of the disk 5 is released. What
At this time, the gear 55 is moved in the direction of the arrow s by the gear 53c.
Rotated. And the arrows m and s of both gears 49c and 55
By rotating in the direction shown in FIG. 9 and FIG.
The torsion action portion 61 of the torsion springs 57a and 57b is
8 is twisted up at the outer periphery and changes to a small diameter state.
Shutter 14 on both torsion springs 57a and 57b, both sliding parts
Materials 43a, 43b, all of the four support members 24a to 24d
All the power is charged. Then, in FIG.
After the cartridge 1 is completely inserted,
The zigzag 1 is connected to the cartridge mounting member 39 as shown in FIG.
Is attached to the predetermined cartridge mounting position,
Disks released from support by the support members 24a to 24d
Is mounted on the turntable 40 and recorded.
And / or a reproducing head (not shown) is, for example, a lower head.
Inserted into the front opening 8b on the side of the
It is brought close to the recording surface. And after this, turntable 4
0 drives the disk 5 in the upper and lower halves 2, 3.
And the head moves the lower recording surface of the disk 5
Scan in the radial direction to record the desired recording or
Reproduction will be performed. It should be noted that the disk cartridge 1 has A,
Disc with B side (upper and lower halves 2 and 3) upside down
When inserted into the player, one of the release projections 67
a is the other slide member 43b and the other release projection 67b
Only pushes one of the sliding members 43a in the direction of arrow h.
The shutter 14 and the four supports described above.
The releasing operation of the members 24a to 24d is performed in exactly the same manner.
Then, when the surfaces A and B of the disc cartridge 1 are reversed,
At this time, recording or reproduction on the upper recording surface of the disk 5
Is performed. After recording or reproduction of the disk 5,
As shown in FIG.
When it is ejected out of the layer in the direction of arrow t, both release projections 6 are released.
7a and 67b are both guide grooves 10a and 10b and both sliding grooves.
It is relatively extracted in the direction of arrow h outside 44a and 44b.
You. Then, both torsion springs 57a and 57b are charged.
Due to the applied spring force, both sliding members 43a and 43b
The shutter 14 is moved back in the h direction.
Slide in the direction of mark b to return to the closed position and open both fronts.
At the same time when the mouths 8a and 8b are closed again, four support portions
The members 24a to 24d are simultaneously rotated in the direction of arrow e,
Disk 5 floats again in the middle position between upper and lower halves 2 and 3
It is supported in the state where it was done. By the way, according to this drive mechanism, the gear
By using the rain 50 and the link 47a,
The sliding of the sliding member 43a in the direction of arrow g
-14 in the direction of arrow c, and a pair of support members 2
4a, 24b in the direction of arrow f.
Simultaneously perform two operations with different moving directions and moving amounts.
It can be done very smoothly. Also gear train
By using the link 54 and the link 47b, the other sliding
When the member 43b slides in the direction of arrow g, a pair of support members
The release operation of 24c and 24d in the direction of arrow f is extremely smooth.
Done in A pair of torsion springs 57a, 57b
Shutter 14, a pair of sliding members 43a, 43b and four
Springs for all the components of the support members 24a to 24d
Make up. Therefore, this drive mechanism has a very simple structure.
It is simple and the operation is very smooth. And especially
Gear train with one of the sliding members 43a and the shutter 14.
50, the movement of the sliding member 43a is performed.
The amount of movement is independent of the amount of movement of the shutter 14 (shutter
14, the amount of movement of the sliding member 43a is restricted.
Not be. ) Can be selected, the design and manufacturing is
Very easy. Also a shutter 14 and a pair of supports
A sliding member 43a for driving the members 24a and 24b;
Sliding member 43 for driving only the supporting members 24a and 24b
b is arranged symmetrically, so that the shutter 1
4 is open in one direction only in the direction of arrow c.
Linaga, a pair of left and right release projections 6 on the disc player side.
7a, 67b, the disk cartridge
When inserting 1 into the disc player,
Even if it is turned over, the shutter 14 is
To open the cover in the same direction (direction of arrow c) at all times.
Can be. That is, the shutter 14 is opened in one direction.
The structure to reverse the A and B sides of the disc cartridge 1
Then, the opening direction of the shutter 14 is opposite to the left and right direction.
Then, the shutter 14 is driven to open the lid in either direction.
A pair of left and right shutters inside the disc player
-A drive mechanism for opening the lid must be provided.
According to the mechanism, this is not necessary, making the mechanism very simple.
You. Further, according to this driving mechanism, as shown in FIG.
As described above, the torsion acting portion 61 in the form of a coil of the torsion spring 57a is
State sandwiched from above and below between the gear 49c and the upper half 2
Since the outer periphery of the boss 58 of the gear 49c is locked,
The shutter 14 is reciprocated between the closed position and the opened position.
However, the torsional action portion 61 is large in the cartridge 1.
There is no movement at all. Also, the torsional action part 61
Inadvertently scratching other parts in cartridge 1
There is no such thing. At this time, the gear 49c
The rib 59 provided on the outer periphery has a
It is even more difficult to accidentally get caught on other parts in the ridge 1.
Making it difficult. That is, the torsional action portion 61 is
c on the gear 49c by effectively utilizing the diameter of c
The mounting structure of the torsion spring 57a is very compact.
And the space for mounting the torsion spring 57a is extremely small.
I can do it. Furthermore, the upper end of the boss 58 of the gear 49c
58a is inserted into the concave portion 65 provided on the inner surface 2b of the upper half 2.
Since the gear 49c is engaged, the gear 49c moves in the directions of arrows m and s in FIG.
When the torsion action portion 61 of the torsion spring 57a is rotated,
It is twisted up as shown by the dashed line in FIG.
When being changed, the torsional action portion 61 is moved to the upper end of the boss 58.
Into the gap between the portion 58a and the inner surface 2b of the upper half 2.
The torsion springs 57a, 57b
It is completely impossible for the spring action (especially return operation) to become impossible.
I don't. Therefore, the operation of the torsion spring 57a can always be performed reliably.
Therefore, is the opening and closing operation of the shutter 14 always extremely reliable?
Can be performed smoothly. Further, according to this drive mechanism, in particular,
Torsion spring 57a constitutes intermediate gear of gear train 50
Mounted on a relatively large diameter gear 49c.
You. That is, as shown in FIG.
The gear 49d arranged on the shutter 14 side is a shutter.
A pinion for driving the rack 46 of the
Gear 49d is close to both front openings 8a, 8b.
Not only there is no room for space, but also the movement of the rack 46
In consideration of the amount, the diameter of the gear 49d is inevitably small.
Become. Also, the gear 4 similarly arranged on the sliding member 43a side
9a is a pinion for driving the rack 45a of the sliding member 43a.
It is inevitable in consideration of the amount of movement of the rack 45a.
The diameter of the gear 49a must be reduced. to this
On the other hand, the gear 49c disposed in the middle is controlled as described above.
Make the diameter of the gear 49c relatively large
Can be done. And increase the diameter of the gear 49c
If the torsion spring 57a is mounted on the gear 49c,
Since the diameter of the acting portion 61 can be increased,
The movement of the support 14 and the pair of support members 24a, 24b.
In the diameter of the torsion acting portion 61 of the torsion spring 57a
Can be reduced, the shutter 14 and a pair of
The return operation of the support members 24a and 24b is always extremely smooth.
Can be performed At this time, the link 47a
A shutter 14 and a pair of support members 2
4a and 24b may be energized in the reverse direction.
In the case of such a configuration, the link 47a is likely to bend.
The link 47a is made of an inexpensive synthetic resin molded product.
And it is not preferable. According to this drive mechanism, four support members are provided.
Of the members 24a to 24d, a pair of left and right 24a and 24
b, 24c and 24d are linked by links 47a and 47b, respectively.
The support member 24 is constructed in a connected double structure,
a, 24b and 24c, 24d, a pair of left and right sliding members 4
It is configured to be driven by 3a or 43b. On this occasion,
All four support members 24a to 24d were connected by links
The sliding members 43a and 43b are configured in a quadruple structure.
It is conceivable to drive with
In this case, the four support members 24a to 24d
The integration rate of the process difference increases, and these support members 2
Large backlash or malfunctioning condition easily occurs in 4a to 24d
It becomes. However, due to the adoption of the above-mentioned double structure,
Process differences between the four support members 24a to 24d due to engineering errors and the like
Of the supporting members 24a to 24a
The 24d rattle is small and they move very accurately.
Make. As described above, the embodiment of the present invention has been described.
The present invention is not limited to the embodiments, but includes the technical concept of the present invention.
Various effective changes are possible based on the idea. According to the present invention, a draw disk is accommodated.
Various recordings, not limited to disc cartridges
And / or disc cart containing discs for playback
Applicable to ridges. [0043] The present invention is configured as described above.
The following effects are obtained. [0044](1)  Shutter with a nearly U-shaped cross section
-Thin plateSide plateThickness of screw in axial direction
IIs the direction parallel to the upper and lower surfaces of the upper and lower halves on the side surface of the sliding member?
By screwing, the cartridge can be
Using the depth in the direction perpendicular to the direction of a certain thickness,
Screws for mounting the shutterIn the axial direction of this screw
Large wall thicknessSo that it can be screwed into the sliding member
And the length of the screw affects the thickness of the cartridge
The cartridge is easily configured
The thickness can be reduced. [0045](2)  Shutter with a nearly U-shaped cross section
Since the entire shutter is a single part, the shutter
Ter'sOne side, a thin side plateToScrew axis direction
Large wall thicknessSliding memberOne side, the sideTo
Just by screwing, the whole shutterScrew axis direction
Large wall thicknessIt can be screwed to the sliding member.
The number of necessary screws and the number of screw fixing processes can be minimized.
Makes it extremely easy to assemble and disassemble the entire shutter.
It can be done simply and the number of screws can be minimized.
Cost can be reduced. (3) Disassemble the upper and lower halves of the cartridge
Of the shutter, the cross section of which is almost U-shapedOne side
Thin side plateAnd remove the screw
Move the cartridge in a direction parallel to the upper and
Easy to pull up and down half of the cartridge just by pulling it out
And can be quickly disassembled, so the entire disc cartridge
Disassembly, repair and reassembly can be performed very easily. What
This point is important when you need to change the shutter frequently.
It works particularly advantageously.That is,For mounting the shutter
To use screwsThe thickness of the screw in the axial direction
largeThere is almost no risk of damaging the sliding member side.
No.Also,Shutter comes off cartridge unexpectedly
Such inconveniences hardly occur. [0047](4)  Shutter with a nearly U-shaped cross section
-Thin plateSide plateThickness of screw in axial direction
ISince the screw is attached to the side of the sliding member, the shutter
No protrusions by screws can be formed on the upper and lower surfaces. Therefore,
When loading a disc cartridge into a disc player
There is no catch on the disc player,
Can be attached to [0048](5)  The shutter isIn the axial direction of the screw
Large wall thicknessSlide along the guide by the sliding member
The shutter can be opened lightly because it can slide smoothly
As well as long life and high reliability.(6) Check the thickness of the sliding member in the axial direction of the screw.
Screw on the sliding member from the side and slide the shutter.
When the tip of the screw is fixed to the moving member,
It is made so thick that it does not protrude from
The side that is one of the relatively small areas
Screw the face plate to one side of the sliding member
Despite the fact that the number of screws is small,
The shutter can be firmly fixed to the sliding member.
In addition, the sliding of the sliding member along the guide
Can be performed smoothly and reliably in a stable state.
There is no risk that the tip of the screw will damage the disc.
No.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a non-use state of a disk cartridge according to the present invention with an upper half of the cartridge removed. FIG. 2 is a plan view showing the use of the disk cartridge according to the present invention with the upper half of the cartridge removed; FIG. 3A is a sectional view taken along line AA of FIG. 1; (B) It is sectional drawing by the BB line arrow of FIG. FIG. 4 is an enlarged sectional view taken along line CC of FIG. 1; FIG. 5 is an exploded perspective view of a main part showing a mounting structure of a support member on a lower half. FIG. 6 is a plan view of a main part shown in FIG. 5; FIG. 7 is a sectional view taken along line DD in FIG. 6; FIG. 8 is an enlarged sectional view taken along line EE of FIG. 1; FIG. 9 is an enlarged sectional view of a main part of FIG. FIG. 10 is an enlarged view of FIG. 9 as viewed from arrows FF. FIG. 11 is an exploded perspective view showing a structure for attaching a shutter to a cartridge. FIG. 12 is an enlarged sectional view taken along line GG of FIG. 1; [Description of Signs] 1 Disk cartridge 2 Upper half 3 Lower half 4 Cartridge 4a Front end 5 Disk 8a Front opening 8b Front opening 14 Shutter 15a Shutter plate 15b Shutter plate 16 Side plate 17 Intermediate portion 18 Guide shaft (guide portion) 19 Sliding member 19a Side surface 21 Screw insertion hole 22 Screw

Continuation of front page    (56) References JP-A-59-94277 (JP, A)                 JP-A-61-16081 (JP, A)                 JP-A-59-75467 (JP, A)                 JP-A-59-72687 (JP, A)                 JP-A-58-212665 (JP, A)                 JP-A-60-43279 (JP, A)                 58-122276 (JP, U)

Claims (1)

(57) [Claims] Rotatably accommodating a disk in a cartridge consisting of upper and lower halves, the opening for the head insertion provided on one at least of the upper and lower halves, a pair of thin plate shutter plate and the pair of thin plate shutter <br/> ter plate And a thin plate-like side plate for connecting the two to each other. A shutter having a substantially U-shaped cross section opens and closes the head insertion opening, and guides the cartridge along one end of the cartridge . the section provided, provided with a sliding member that slides along the guide portion, provided with a screw insertion hole in the thin plate-shaped side face plate, so as to interleave said cartridge to said pair of thin plate shutter plates , the shutter from the one end of the cartridge causes fitted in the cartridge, this in the screw insertion hole of the thin plate-shaped side face plate Configure was inserted in the fitting direction bis by screwed from the side surfaces in the sliding member so as to fix the said shutter to said slide member
Then, the thickness of the sliding member in the fitting direction is
In this state, the tip of the screw protrudes from the sliding member.
A disk cartridge with a large wall thickness .