JPH077564B2 - Recording medium disk drive - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive device for recording or reproducing data using a flexible magnetic disk called a floppy disk.

[0002]

2. Description of the Related Art In a floppy disk drive of a type in which a magnetic disk is held and rotated by a clamper called a collet and a disk drive support called a rim or a hub, in synchronization with the operation of the clamper. The upper magnetic head has already been brought into contact with the disk. However, when the clamper was operated with the disk cartridge not inserted, one head mounted on the lower carriage abuts the other head mounted on the upper carriage, and each head is mirror-finished. A strong suction state occurs on the gap surface, it becomes difficult to separate the other head from the one head, and the gimbal support supporting the head may be damaged.

[0003]

In order to solve this kind of problem, the movement mechanism of the clamper is prohibited when the disc cartridge is not inserted, and the clamper is moved only when the disc cartridge is inserted. It is conceivable to enable the operation of the mechanism. If you do this,
The contact between the pair of heads is prevented when the disc cartridge is not inserted. However, if you accidentally operate the movement mechanism of the clamper with the disc cartridge not inserted,
An excessive force is applied to the contact prevention mechanism, which may damage this part. Therefore, it is necessary to make the contact blocking mechanism robust, which inevitably increases the cost. Also,
When the clamper is moved with the disc cartridge not inserted and adjustment and repair are performed, the blocking by the contact blocking mechanism must be released by some means,
Workability was poor. Further, when the disk cartridge is inserted, the disk may collide with the lower head and the head may be damaged.

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording medium disk drive device capable of protecting the head when the disk cartridge is inserted with a simple structure.

[0005]

Means for Solving the Problems The present invention for achieving the above object, referring to the sign of the drawings showing an embodiment, a recording medium disk in the disk cartridge (20)
Disk (18) formed to support and rotate
A disk rotation mechanism including a drive support (16);
The disk (1) to the disk drive support (16)
8) From the disc non-holding position where the disc can be attached and detached,
Move to the holding position and press the disk (18) to
The disk (18) is attached to the disk drive support (16).
To operate the clamper (26) to be fixed and the operation part
Therefore, the clamper (26) is moved to the disc holding position and
And the clamper moving mechanism (2
5) and directly in the axial direction of the disk drive support (16).
From the intersecting direction to the front on the disk drive support (16)
An opening for inserting the disc cartridge (20)
A disk mounting / dismounting operation surface portion (36) having (37);
Arranged to contact one side of the disc (18)
One of the signal converters, and the other of the disc (18)
Touch one surface and face one of the signal converters.
The other signal converter arranged in such a way that
One carriage (56) to which a converter is attached,
The other signal converter is used for disc contact position and disc separation position.
It is configured to be displaceable so that
If the displacement is not limited, the signal change of the one
The other signal converter so that the other signal converter abuts on the other
Carriage (63) supporting another signal converter of
And the other signal converter is connected to the one signal converter.
The other carriage (63) is always biased in the approaching direction.
The carriage biasing device and the signal changes of the one and the other.
Determine the radial position of the disk (18) of the converter
In order for the one and the other carriages ( 56) (6
Carriage moving machine that moves 3) in the disk radial direction
The disk cartridge (20).
The disk (18) when inserting it on the rotating mechanism.
The disk car when fixed by the clamper (26)
The disc cart above the position of the tridge (20)
A limiting position for limiting the insertion position of the ridge (20), and
The disk (18) was fixed with the clamper (26).
Unrestricted below the position of the cartridge (20) at the time
Is rotatably supported so as to selectively take a position and
An engaging portion (8) that engages with the clamper moving mechanism (25)
6) and the clamper moving mechanism (25) is
Keeping the clamper (26) in the disc non-holding position
The limit position is obtained when the clamper moving mechanism
(25) holds the clamper (26) in the disc holding position.
So that the unrestricted position is obtained when it is kept in place
The cartridge limiting lever in which the engaging portion (86) is arranged.
So that the bar (68) and the disc separation position can be obtained
A carriage for holding the other carriage (63) on the
In order to obtain the holding position and the disk contact position,
Carriage for releasing holding of the other carriage (63)
The other carrier is used to selectively take the holding release position.
The front of the clamper (26), which engages with the wedge (63).
Moving from the disc holding position to the disc non-holding position
Corresponding to the movement of the carriage from the carriage holding release position.
The clamper moving mechanism (2
5) Carriage control lever (67) engaged with
And rotatably support the carriage control lever (67).
Hold and face this carriage control lever (67)
The arranged cartridge position limiting lever (68)
A lever support (69) rotatably supported, and
Set the carriage control lever (67) to the carriage holding solution.
The cart is always biased in the direction in which the removal position is obtained and
Attach the ridge position limiting lever (68) to the disc cartridge.
Lever (20) is biased in a direction that limits the insertion position.
-The bias spring (70) and the disc cartridge (2)
0) on the disk drive support (16)
Pressed by the disc cartridge (20)
Has a pressed portion (72e), and the pressed portion (72e)
When is pressed by the disc cartridge (20)
The carriage control lever (67) is rotated and the carriage control lever (67) is rotated.
Allow the ridge holding release position to
Cartridges (20) the disk drive moving the support (16)
When not inserted above, the carriage control lever
(67) against the lever bias spring (70)
A rotating body (7
The present invention relates to a recording medium disk drive comprising 2) .

[0006]

In the present invention, the cartridge position limiting lever 68 and the carriage control lever 67 are arranged to face each other,
Since it is biased by the common spring 70, simplification of the structure is achieved. That is, it is possible to easily prevent the collision of the disk cartridge 20 with respect to the signal converter and the mutual collision of the pair of signal converters when the disk cartridge 20 is not inserted.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. First, to describe the overall configuration of the disk drive device, the container 10 shown in FIGS. 1 to 6 is composed of a support base 11 formed by aluminum die casting and a cover 12 that covers the front and bottom surfaces and is formed in a box shape. There is.

As is apparent from FIGS. 3 and 4, a motor 13 for rotating a disk is mounted on a base 11 by a bearing 14, and a rotating shaft of the motor 13 has a recess 15 and is also called a rim or a hub for driving a disk. The body 16 is fixed. This disk drive support 16 has a recess 15
Has a ring-shaped support surface 17 on which the lower surface at the center of the disk is placed. As shown in FIG. 15, this disk drive device is configured to mount a disk cartridge 20 of a quadrangular plane shape, which is composed of a flexible magnetic disk 18 and a box-shaped jacket 19 or an enclosure surrounding the flexible magnetic disk 18 as it is. 19 has a central opening 22 for exposing the disk central portion 18a surrounding the central through hole 21 of the disk 18 and a magnetic head insertion opening 23 extending in the radial direction. Therefore, only the disk 18 is rotated in the jacket 19. Then, recording or reproduction can be performed. The lower surface of the disk cartridge 20 is also formed similarly to the upper surface. Further, the jacket 19 is provided with a cutout 24 for preventing another recording from being accidentally performed on the recorded disc.

A clamper 26 shown in FIGS. 1 to 4 is also called a collet. The clamper 26 is moved and operated by the clamper moving mechanism 25 including the operation knob 38 shown in FIGS. 1 and 2 to the arm 27 supporting the clamper 26, and the disc holding position shown in FIG. 3 and the disc non-holding shown in FIG. Move between positions. The clamper operation arm 27 receives a biasing force in the disc non-holding direction indicated by an arrow 29 in FIGS. 3 and 4 by a leaf spring 28 as a biasing device provided between the one end 27a and the base 11. The clamper 26 is rotatably mounted on the shaft 30 of the other end 27b of the arm 27 and
A biasing force in the direction of the disk drive support 16 is applied by a coil spring (not shown) provided in the disk drive support 16.
The clamper 26 has a tapered portion 26a inserted into the through hole 21 of the disk 18 and the central portion 1 of the disk 18.
8a and a flange portion 26b for pressing.

The rotating arm 27 has a metal plate at its tip portion 27b, and is provided with a disc non-holding position determining engaging portion 31 shown in FIG. 3 and engaging portions 32 and 33 shown in FIG. ing. As shown in FIG. 3, the engaging portion 31 abuts on the stopper portion 35 formed of the upper surface portion of the frame 34 fixed to the base 11, so that the rotation of the arm 27 by the spring 28 is prevented at this position. As shown in FIGS. 5 and 6, an elongated disc cartridge insertion opening 37 is provided in the disc loading / unloading operation surface portion 36 of the container 10. This opening 37
Is composed of a slot formed to have a size into which the disc cartridge 20 of FIG. 15 can be inserted, and is arranged so that the support surface 17 of the drive support member 16 substantially coincides with the extended horizontal plane of the opening 37.

The operation surface portion 36 is provided with a disc clamp operation knob 38, that is, a clamp operation lever, as a manual operation portion. The operation knob 38 is fixed to one end of the rotary shaft 39, and the clamp moving mechanism 2 shown in FIGS.
5, the opening 37 shown in FIG.
6 is formed so as to take a non-shielding position in which a portion of the opening 37 shown in FIG. 6 is shielded corresponding to the disc holding position of the clamp moving mechanism 25 shown in FIGS. 2 and 4. There is. Further, this operation knob 38 has a disc insertion operation portion 40 as is apparent from FIG. The disc insertion operation portion 40 is a portion that protrudes in the disc insertion direction, and has an inclined surface 41 that the amount of protrusion decreases as the distance from the shaft 39 increases. When the disc cartridge 20 is securely inserted up to the stopper 42 shown in FIG. 1, the disc insertion operation section 40 does not participate in the insertion of the disc cartridge 20, but when the insertion of the disc cartridge 20 is incomplete, , Operation knob 3
When 8 is rotated clockwise in FIG. 5, the inclined surface 41 contacts the edge of the cartridge 20, the position of the inclined surface 41 with respect to the cartridge 20 changes following the rotation of the operation knob 38, and the cartridge 20 is pushed in smoothly. Be done.

The clamper moving mechanism 25 for transmitting the operation of the operation knob 38 to the clamper 26 is rotatably supported by bearings 43, 43 'mounted on the frame 34 and one end thereof, as is most apparent in FIG. A rotary shaft 39 having an operation knob 38 fixed thereto, an arm 44 fixed to the other end of the shaft 39 in a crank shape, a pin 45 planted in the arm 44 in a crank shape, and a pin 45 attached to the pin 45. A rotating plate 47 that is engaged and one end of which is rotatably supported by the fixed shaft 46.
And an engaging portion 48 made of a pin fixed to the other end of the rotating plate 47.

To explain this mechanism in more detail, the rotary shaft 39 is fixed to the fulcrum of the operating knob 38, that is, the operating lever, extends in the disc inserting direction indicated by the arrow 49, and is arranged parallel to the inserting plane of the disc cartridge 20. Has been done. The arm 44 is a shaft 3 protruding upward from the frame 34.
It is fixed to the tip of 9 so as to form a crank arm and extends parallel to the operation knob 38. Pin 45 is shaft 39
It is arranged at a position that serves as a crank pin. That is, the pin 45 projects at a right angle from the surface of the arm 27 opposite to the surface on which the rotary shaft 39 is fixed, is arranged so that its center does not coincide with the center of the shaft 39, and extends in the disc insertion direction indicated by the arrow 49.

A rotating plate 47, which is rotatably supported by a fixed shaft 46 fixed to the frame 34, has an engaging surface for a pin 45, which is an inner peripheral surface of a slot 50 extending along the longitudinal direction thereof. The rotation of the arm 44, that is, the crank pin 45
It is arranged so as to rotate in a plane perpendicular to the disc insertion direction following the change in the angular position of the disc. In the engagement surface of the slot 50, that is, the pin 45, a straight line connecting the center of the shaft 39 and the center of the pin 45 is a disk holding device 2.
Pin 45 until it is almost parallel to the plane including the movement trajectory of 5
Is formed to allow the movement of. The engaging portion 48 provided at the tip of the rotating plate 47 is composed of a pin protruding in the disc insertion direction shown by an arrow 49, and is held by the protruding engaging portions 32 and 33 provided on the rotating arm 27. Engaged. 52 and 53 shown in FIG. 1 are color respectively.

Since this floppy disk drive is a double-sided recording / reproducing type, it has one magnetic head 54 as a signal converter that contacts the lower surface of the disk 18 and the other magnetic head 55 that contacts the upper surface. One head 54
Is attached to one carriage 54 and the other head 5
5 is attached to the other carriage 63. The lower carriage 56 has two guide rails 5 extending in the radial direction of the disc 18, that is, in the insertion direction of the disc 18.
It is guided by 7 and moves in the radial direction of the disk 18.
The carriage 56 has a rack 58 as shown in FIG.
The pinion 59 and the pinion 59 are coupled to the stepping motor 60 via a mechanism for converting a rotary motion into a linear motion, and move in response to the driving of the motor 60. The rotation-linear conversion mechanism is not limited to the rack 58 and the pinion 59, and may be a known α-wound steel belt, a lead screw, or the like. The lower head 54 is a gimbal spring 61.
The head 55 on the upper side is attached to the carriage 56 by the gimbal spring 64 on the upper carriage 63 which is biased downward by the plate spring 62. Upper carriage 63
Is provided with a projecting portion 65 for performing control for keeping it at the disc separating position.

Reference numeral 66 in FIGS. 1 and 2 denotes a cartridge position and carriage control mechanism, which is constructed as shown in FIGS. This mechanism 66 is shown in FIGS.
As is most apparent from the above, a carriage control lever 67 made of synthetic resin, a cartridge position limiting lever 68 made of synthetic resin, a metal lever support 69 fixed to the base body 11 of the container 10, a compression coil spring 70, The torsion spring 71 shown in FIG. 9, a rotating body 72 having a cam structure, and a shaft 73 fixed to the lever support 69 to rotatably support the rotating body 72.

As is apparent from FIG. 8, the lever support 69 has a pair of support parts 74 and 75, which are opposed to each other by 4
Two holes 76, 77, 78, 79 are formed. The support body 69 has a guide arm 69a for limiting the upward position of the cartridge 20, and further has a rotating body support portion 69b. A shaft 73 shown in FIG. 8 is planted in the rotating body supporting portion 69b, and the rotating body 72 is rotatably attached thereto. The guide arm 69a is the cartridge 2
It is placed opposite to the lever 68 that restricts the lower position of 0,
A cartridge 20 is inserted between them as shown in FIG.
Be entered. As a result, the cartridge 20 is placed above and below the magnetic field.
It does not collide with either of the heads 54 and 55.

The synthetic resin carriage control lever 67 is
It includes a carriage engaging portion 80, a rotating body engaging portion 81, and a U-shaped supported portion 82. Cylindrical shafts 83 and 84 are provided on the outer sides of the facing portions 82a and 82b of the U-shaped supported portion 82, and the shafts 83 and 84 are rotatably inserted into the holes 76 and 77 of the lever supporting portions 74 and 75. Has been done. This insert
The portion 82a is elastically deformed so that the facing portions 82a and 82b of the U-shaped supported portion 82 approach each other, and the shaft 83,
This is accomplished by undoing the above deformation with 84 aligned with holes 76, 77. Therefore, the lever 67
Is very easily achieved.

Cartridge position limiting lever 6 made of synthetic resin
Reference numeral 8 includes a cartridge position limiting portion 85 for keeping the cartridge 20 at a position separated from the lower head 54, a clamp arm engaging portion 86, and a U-shaped supported portion 87. A pair of columnar shafts 88 and 89 are provided on the outer sides of the facing portions 87a and 87b of the U-shaped supported portion 87, and the shafts 88 and 89 rotate in the holes 78 and 79 of the lever supporting portions 74 and 75. It is freely inserted. This insertion elastically deforms the portion 87a such that the facing portions 87a and 87b of the U-shaped supported portion 87 approach each other, and the shafts 88 and 89 are inserted into the holes 7.
This is achieved by undoing the above deformation in the state of being aligned with 8, 79. Therefore, the support of the lever 68 is very easily achieved.

As shown in FIG. 8, the carriage control lever 67
A spring engaging hole 89 is provided in the cartridge position limiting lever 68, and a spring engaging hole 90 is provided in the cartridge position limiting lever 68, and a spring 70 is arranged between them as shown in FIG. Therefore,
A biasing force in the counterclockwise direction in FIG. 7 and in the clockwise direction in FIG. 11 is applied to the carriage control lever 67 by the spring 70. On the other hand, the cartridge position limiting lever 68 is biased by the spring 70 in the clockwise direction in FIG. 7 and in the counterclockwise direction in FIG. Therefore, one spring 70
The biasing force of the two levers 67 and 68 is given by, and the structure is simplified. The rotation of the cartridge position limiting lever 68 in the clockwise direction in FIG. 7 is limited by the engagement surface 68 a hitting the lever support 69.

The rotating body 72, which acts like a cam, has a spring 70.
Against this, the carriage control lever 67 is kept at the disc-separating carriage holding position shown in FIGS. 7 to 11 to allow the carriage control lever 67 to move to the carriage holding release position in response to the insertion of the disc cartridge 20. As shown in FIG. 8, it is formed to have a non- circular outer peripheral surface, and has a first engaging surface 72a and second engaging surfaces 72b and 72c perpendicular to the first engaging surface 72a. ,
72c is formed so as to contact the engagement surface 67a of the carriage control lever 67. The shaft 73 to the first engagement surface 7
The height up to 2a is from the shaft 73 to the second engaging surfaces 72b, 7
Since the height is larger than the height up to 2c, the carriage control lever 67 is set to the carriage holding position shown in FIGS.
2 to 14 can be selectively obtained. The rotating body 72 receives a biasing force in the clockwise direction in FIG. 8 by the torsion spring 71 around which the shaft 73 is wound. However, the projecting portion 72d is the stopper 69 of the support portion 69.
It is restricted to rotate further by hitting c. The rotating body 72 has a pressed portion 72e that is pressed by the disk cartridge 20 as is apparent from FIG. This cover
The pressing portion 72e is provided in the insertion passage of the disc cartridge 20.
It is arranged to project. The pressed part 72e is
When it is pressed by the skew ridge 20, the rotating body 72 rotates.
The pressed portion 72e moves to insert the disc cartridge 20.
Move to a position that does not block entry.

1, FIG. 2, FIG. 9, and FIG. 12, reference numeral 91 is a return operation portion, which is integrated with the clamper support arm 27 and engages with the engagement portion 67b at the tip of the carriage control lever 67. Is.

Next, the operation of this device will be described. When the disc cartridge 20 is not inserted and the clamping operation is not performed, each part is shown in FIG. 1, FIG. 3, FIG. 5, FIG.
The state shown in FIG. 11 is maintained. On the other hand, when the disc cartridge 20 is inserted and the clamping operation is performed, the respective parts are in the states shown in FIGS. 2, 4, 6, and 12 to 14. First, when the knob 38 is at the position shown in FIGS. 1 and 5 and the clamp operation is not performed, the clamper operation arm 2
As shown in FIG. 3, 7 is returned to the position where the clamper 26 is separated from the disk drive support 16 by the bias of the spring 28. Further, the upper head carriage 63 is biased counterclockwise in FIG. 3 by the spring 62,
Since the protrusion 65 engages with the engaging portion 80 of the carriage control lever 67 by passing over the clamper operation arm 27 and the protrusion 65 is lifted by the carriage control lever 67, the upper head 55 is moved to the lower side. It is located away from the head 54.

Next, when the disk cartridge 20 is inserted from the direction shown by the arrow 49 in FIG. 1, that is, the direction orthogonal to the axial direction of the drive support 16, the clamper 26 and the drive support 1 are inserted.
As shown in FIG. 10, it is inserted between the cartridge position limiting lever 68 and the guide arm 69a of the supporting body 69 so that the tip of the cartridge 20 covers the lower part of the rotating body 72 as shown in FIG. The pressing portion 72e is pressed. this
As a result, the rotating body 72 resists the bias of the spring 71 and moves the shaft 73 inside.
Rotate to the center and slide the cartridge 20 onto the pressed portion 72e.
Inserted further while touching, as shown in Figure 12 and Figure 14.
The pressed portion 72e is attached to the cartridge due to the bias of the spring 71.
It comes into contact with 20. However, when the clamper 26 is not pushed down toward the drive support 167, the carriage control lever 67 is restricted from moving by the return operation portion 91 of the arm 27 shown in FIG. 9 to 11 are maintained.
In the state shown in FIGS. 9 to 10, the cartridge position limiting lever 68 is held at a high position, so that the cartridge 20 is inserted without colliding with the lower head 54.

Thereafter, when the operation knob 38 is rotated from the position shown in FIG. 5 by about 90 degrees as shown in FIG. 6, the crank arm 44 also rotates about 90 degrees following the rotation of the operation knob 38, and is rotated again. The moving plate 47 is pressed by the crank pin 45 and rotated by a predetermined angle, and the engaging portion 48 formed of a pin at the tip presses the engaging portion 33 of the rotating arm 27 and resists the biasing force of the leaf spring 28. Then, the clamper operation arm 27 is rotated counterclockwise in FIG. 3 so that the taper portion 26a of the clamper 26 moves the disk 1
8 through holes 21 and the recess 1 of the disk rotation support 16
5 into the disk center portion 18a and the disk center portion 18a and the flange-shaped portion 26b of the clamper 26 and the disk rotation support 16
It is sandwiched between the supporting surface 17 and the supporting surface 17. If the clamper operation arm 27 rotates as shown in FIGS. 2 and 4, the arm 27
7, the restriction of the carriage control lever 67 by the return operation portion 91 is released, the lever 67 is rotated counterclockwise in FIG. 7 by the action of the spring 70 shown in FIG. It becomes lower in FIG. It should be noted that the rotation of the carriage control lever 67 has already been rotated as shown in FIG. 14 in response to the insertion of the cartridge 20 by the rotation body 72 having a cam structure having a circular outer peripheral surface.
It is not limited by 2. When the carriage control lever 67 is in the position shown in FIGS. 12-14, the upper carriage 63 is no longer restricted by this, so the spring 62
Then, as shown in FIG. 4, the head 55 contacts the disk 18 in the cartridge 20.

When the clamper operating arm 27 rotates as shown in FIG. 4, the clamper operating arm 27 pushes the engaging portion 86 of the cartridge position limiting lever 68, and the lever 68 changes from the state of FIG. 11 to the state of FIG. As shown, the cartridge is rotated clockwise, the cartridge limiting portion 85 descends, the cartridge 20 also descends following this, and the cartridge 20 is arranged at a predetermined height at which recording and reproduction are possible. Since the spring 70 is stronger than the spring 71, the rotating body 72 is held in the state of FIG. 14 and does not press the cartridge 20. Therefore, there is no disadvantage that the rotation of the disk 18 is hindered by providing the rotating body 72.

To remove the disc cartridge 20, first, the knob 38 is returned from the position of FIG. 6 to the position of FIG. 5, and the pressing of the clamper operating arm 27 by the engaging portion 48 made of a pin is released, and the arm 27 is removed. The force of the spring 28 returns to the state of FIG. As a result, the pressing of the engaging portion 86 of the cartridge position limiting lever 68 by the arm 27 is released, and the lever 68 returns from the position of FIGS. 12 to 13 to the position of FIGS. Is also lifted slightly by lever 68. On the other hand, with the rotation of the clamper operating arm 27 to FIG. 3, the tip end engaging portion 67b of the carriage control lever 67 is lifted by the return operating portion 91 provided on the arm 27, and the lever 67 is moved.
Rotates counterclockwise in FIG. 14 and returns to the state of FIGS. As a result, the upper head carriage 63 also returns to the position shown in FIG. Then, when the cartridge 20 is pulled out, the engagement between the cartridge 20 and the rotating body 72 is lost, and the rotating body 72 returns to the position shown in FIGS. 9 to 10 by the force of the spring 71.

In this apparatus, the clamper 26 can be lowered by turning the knob 38 without inserting the cartridge 20. That is, since a mechanism for inhibiting the operation of the clamper moving mechanism 25 is not provided, the clamper 26 can move up and down freely. However, even if the clamper 26 is moved, unless the cartridge 20 is inserted, the upper head 55
The carriage 63 does not move because it is restricted by the carriage control lever 67. Therefore, the upper head 55
And the lower head 54 is not attracted. As a result, the springs 61 and 64 that support the heads 54 and 55 are not damaged.

In this embodiment, the levers 67 and 68 further have U-shaped supported portions 82 and 87, and the shaft 8 is elastically deformed.
Since 3, 84, 88, 89 are configured to be inserted into the holes 76 to 79, they can be assembled very easily with a small number of parts.

Since the lever 67 and the lever 68 are biased by the common spring 70, the number of parts is reduced and the configuration is simplified.

The embodiments of the present invention have been described above.
The present invention is not limited to this and can be further modified. For example, a coil spring for biasing the upper carriage 63 in the disc direction may be additionally arranged on the carriage 63. In addition, the carriage control lever 67
11 is returned to the state of FIG. 11 by operating the lever 67 or the rotating body 72 by an independently provided operating device without using the operating portion 91 integrated with the arm 27. Good.

[0032]

According to the present invention, even if the clamper moving mechanism is operated, the pair of signal converters do not come into contact with each other. Therefore, it becomes possible to operate the clamper in a state where the disc cartridge is not inserted, which facilitates adjustment and repair. Further, since the mechanism for preventing the contact between the pair of signal converters is configured to respond to the disc cartridge, there is little possibility that a large force will be applied. Further, it is possible to easily prevent the disc cartridge from colliding with the signal converter when the disc cartridge is inserted.

[Brief description of drawings]

FIG. 1 is a plan view showing a disk drive device according to an embodiment of the present invention with a part thereof cut away.

FIG. 2 is a plan view showing a state where a clamper of the apparatus shown in FIG. 1 is operated.

3 is a cross-sectional view of a portion indicated by 3 of the timepiece character in FIG.

FIG. 4 is a cross-sectional view of a portion indicated by a clock character 4 in FIG.

5 is a front view of the device of FIG. 1. FIG.

FIG. 6 is a front view of the device of FIG.

7 is a perspective view showing a cartridge position and a carriage control mechanism of the apparatus shown in FIG.

FIG. 8 is an exploded perspective view of the mechanism of FIG.

9 is a plan view of the mechanism of FIG. 7. FIG.

10 is a right side view of the mechanism of FIG.

FIG. 11 is a front view of the mechanism of FIG.

12 is a plan view showing a state where the mechanism of FIG. 9 is operated by a cartridge.

13 is a right side view of the mechanism of FIG.

FIG. 14 is a front view of the mechanism of FIG.

FIG. 15 is a plan view of the cartridge.

[Explanation of symbols]

 16 disk drive support 20 disk cartridge 25 clamper moving mechanism

Claims (1)

[Claims] 1. A disk rotation mechanism including a disk drive support (16) formed to support and rotate a recording medium disk (18) of a disk cartridge (20), and the disk drive support (16). A clamper for moving the disc (18) from the disc non-holding position to the disc holding position and pressing the disc (18) to fix the disc (18) to the disc drive support (16). (26), a clamper moving mechanism (25) for setting the clamper (26) to the disc holding position and the disc non-holding position by operating an operating portion, and an axial direction of the disc drive support (16). The disk drive support (1
6) A disc mounting / dismounting operation surface portion (36) having an opening (37) for inserting the disc cartridge (20) thereon, and one of which is arranged so as to contact one face of the disc (18). The signal converter, the other signal converter arranged so as to contact the other surface of the disk (18) and face the one signal converter, and the one signal converter are attached. The one carriage (56) and the other signal converter are configured to be displaceable so as to obtain the disk contact position and the disk separation position, and the one signal converter when the displacement is not limited. The other carriage (63) supporting the other signal converter so that the other signal converter comes into contact with the other signal converter, and the other signal converter approaches the one signal converter. A carriage biasing device for constantly biasing the other carriage (63) toward one side, and one and the other carriage (56) for determining the radial position of the disc (18) of the one and the other signal transducers. ) (63) a carriage moving mechanism for moving the disk radial direction, and the disk cartridge (20)
When the disc is inserted into the disc rotating mechanism, the insertion position of the disc cartridge (20) is set above the position of the disc cartridge (20) when the disc (18) is fixed by the clamper (26). System to limit
At the limit position and the disk (18) to the clamper (2
From the position of the cartridge (20) when fixed in 6)
Freely rotatable to selectively take the lower limit position
Supported and engaged with the clamper moving mechanism (25)
And a clamper moving mechanism having an engaging portion (86)
(25) holds the clamper (26) without holding the disc
While in position, the restricted position is obtained and the
The damper moving mechanism (25) moves the clamper (26)
If the non-restricted position is obtained while holding the disc in the holding position,
And a carriage holding position for holding the other carriage (63) so that the disc separating position can be obtained. And the other carriage (63) for selectively holding the carriage holding release position for releasing the holding of the other carriage (63) so as to obtain the disk contact position, and the clamper (63). A carriage control lever engaged with the clamper moving mechanism (25) so as to return from the carriage holding release position to the carriage holding position in response to the movement of 26) from the disc holding position to the disc non-holding position. (67) and the carriage control lever (67) are rotatably supported and the carriage control lever (6)
7) a lever support body (6) that rotatably supports the cartridge position limiting lever (68) arranged to face the cartridge position limiting lever (6).
9), the carriage control lever (67) is always biased in the direction in which the carriage holding release position is obtained, and the cartridge position limiting lever (68) is biased in the direction in which the insertion position of the disc cartridge (20) is limited. The lever bias spring (70) and the disk car
Mount the trench (20) on the disk drive support (16).
When the disc cartridge (20) is inserted into the
Has a pressed portion (72e) that is pressed by
The part (72e) is pushed by the disc cartridge (20).
When the carriage control lever (6
7) allows the carriage holding release position,
When the disc cartridge (20) is not inserted on the disc drive support (16), the carriage control lever (67) is moved to the lever bias spring (7).
Against 0) arranged to keep the carriage holding position
It has been rotating body (72) from the composed recording medium disk drive.