JP2003091914A - Disk cartridge loading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly switch operations among those of a cartridge drawing mechanism, a holder elevating mechanism and a magnetic head elevating mechanism, which are provided for a disk cartridge loading device. SOLUTION: The disk cartridge loading device is equipped with a cam member 9 which is rotatably driven by a driving motor 82. The cam member 9 is formed with a first, second and third cam faces which are each to be engaged with the driven part of the cartridge drawing mechanism, of the holder elevating mechanism, and of the magnetic head elevating mechanism respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge containing a disk-shaped recording medium such as a magneto-optical disk, and is intended for a disk recording / reproducing apparatus for recording and / or reproducing a signal. The present invention relates to a disc cartridge loading device that conveys the produced disc cartridge to a signal recording / reproducing position.

[0002]

2. Description of the Related Art Conventionally, in a disk cartridge loading apparatus of this type, a disk cartridge inserted in a cartridge holder is first conveyed in a substantially horizontal direction in the cartridge holder, and then the cartridge holder is lowered in a substantially vertical direction. Therefore, the disk cartridge is installed at the signal recording / reproducing position.

The disc cartridge loading device has a cartridge retracting mechanism for retracting the disc cartridge inserted into the cartridge holder from the cartridge insertion port to a moving end in the cartridge inserting direction, and a direction in which the cartridge holder is substantially orthogonal to the cartridge inserting direction. A holder elevating mechanism for moving the disk cartridge to the signal recording / reproducing position and a magnetic head elevating mechanism for moving the magnetic head toward the disk surface of the disk cartridge at the signal recording / reproducing position. It has.

Further, a first slide member for driving the cartridge retracting mechanism, a second slide member for driving the holder elevating mechanism, a cam member which engages with both slide members, and a rotational driving of the cam member. And a drive motor to operate. In loading the disc cartridge, the first slide member is driven first by the rotation of the cam member, so that the second slide member is driven after the first slide member reaches the moving end.

[0005]

However, in the conventional disk cartridge loading device, the structure of the power transmission mechanism for sequentially driving the two slide members by the rotation of the cam member is complicated, and the structure for the first slide member is different. Due to the play of the mechanism for switching from the transmission of power to the transmission of power to the second slide member, there has been a problem that the switching timing varies and vibration occurs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a disk cartridge loading device having a simple structure capable of smoothly switching the disk cartridge retracting operation, the cartridge holder elevating operation, and the magnetic head elevating operation.

[0007]

DISCLOSURE OF THE INVENTION A disk cartridge loading device according to the present invention comprises a cartridge insertion opening (60).
And a cartridge retracting mechanism for retracting the disc cartridge (4) inserted into the cartridge holder (6) to the moving end in the cartridge inserting direction, and the cartridge holder (6) is moved in a direction substantially orthogonal to the cartridge inserting direction. A holder lifting mechanism for setting the disc cartridge (4) at the signal recording / playback position,
It is provided with a magnetic head lifting mechanism for moving the magnetic head (110) toward the disk surface of the disk cartridge (4) at the signal recording / reproducing position. In addition, the disk cartridge loading device according to the present invention includes a drive motor.
The cam member (9) is driven to rotate by (82), and the cam member (9) has a first cam surface to be engaged with a driven part of the cartridge retracting mechanism and a holder lifting mechanism. A second cam surface to be engaged with the driving portion and a third cam surface to be engaged with the driven portion of the magnetic head lifting mechanism are formed.

In the disk cartridge loading device of the present invention, the cam member (9) is rotationally driven in one direction by inserting the disk cartridge (4) into the cartridge holder (6). As a result, first, the first cam surface slides on the driven portion of the cartridge retracting mechanism, and the cam action of the cam surface causes the cartridge retracting mechanism to perform the cartridge retracting operation. Subsequently, the second cam surface slides on the driven part of the holder elevating mechanism, and the cam action of the cam surface causes the holder elevating mechanism to set the disk cartridge (4) at the signal recording / reproducing position. Carry out. afterwards,
The third cam surface slides on the driven portion of the magnetic head lifting mechanism, and the cam action of the cam surface moves the magnetic head (110) to the magnetic head lifting mechanism toward the disk surface of the disk cartridge (4). Perform the action for making it.

In a specific construction, the cartridge retracting mechanism includes a cartridge retracting slide (2) slidable in the cartridge inserting direction and a disc cartridge in the cartridge holder (6) pivotally supported by the cartridge retracting slide (2). It has a cartridge handling lever (5) which can be engaged and disengaged with respect to (4), and a spring (3) which biases the cartridge retracting slide (2) in the cartridge ejecting direction.
A driven portion with which the first cam surface of the cam member (9) is engaged is formed at the end of (2). Further, the first cam surface of the cam member (9) has a drive cam surface (92) for driving the end portion of the cartridge retracting slide (2) with the rotation of the cam member (9) and the cam member (9). Outer peripheral surface consisting of a cylindrical surface centering on the rotation axis
(94) and.

In the above concrete structure, the cam member (9)
Is driven to rotate in one direction, so that the driving cam surface (92) forming the first cam surface of the cam member (9) first comes into sliding contact with the driven piece (24) of the cartridge pull-in slide (2),
The driven piece (24) is driven in the cartridge insertion direction. As a result, the cartridge pull-in slide (2) and the cartridge handling lever (5) move in the cartridge inserting direction against the spring (3), which causes the disc cartridge (4) in the cartridge holder (6) to move. Be drawn up to. Thereafter, the outer peripheral surface (94) forming the first cam surface of the cam member (9) is brought into sliding contact with the driven piece (24) of the cartridge pull-in slide (2), and the cartridge pull-in slide (2) and the cartridge handling lever.
(5) is held at the moving end.

In another concrete structure, the holder elevating mechanism includes a cartridge holder (6), a pivot portion for pivotally supporting an end portion in the cartridge insertion direction, and a cartridge holder.
A spring (7) that biases (6) toward the signal recording / playback position.
A cam follower (63) formed on the cartridge holder (6) is engaged with the second cam surface of the cam member (9). Also, the second cam surface of the cam member (9) has a cam member (9)
Higher cam surface (91a), inclined cam surface (91b), and lower cam surface (91c) that are continuously formed on an arc centered on the rotation axis of
It is composed by.

In this specific structure, the second rotation of the cam member (9) causes the second member of the cam member (9) to rotate.
Higher cam surface (91a) of the cam surface is the cartridge holder (6)
The slanted cam surface from the state of sliding contact with the cam follower (63)
(91b) is in sliding contact with the cam follower (63),
Finally, the lower cam surface (91c) faces the cam follower (63). In the process, cartridge holder
(6) is biased by the spring (7) and moves toward the signal recording / reproducing position. Along with this, the disc cartridge (4) in the cartridge holder (6) is set at the signal recording / reproducing position.

In still another specific configuration, the magnetic head lifting mechanism engages with the lever portion (111) of the magnetic head (110) to attach the core portion (112) of the magnetic head (110) to the disk cartridge (4). Magnetic head lifting lever (10) for moving the disk closer to or away from the
Cam follower formed at the end of the magnetic head lifting lever (10), including a spring (13) for urging (0) in the separating direction.
(103) engages with the third cam surface of the cam member (9).
The third cam surface of the cam member (9) is an inclined cam surface formed continuously on an arc centered on the rotation axis of the cam member (9).
(93a) and the high cam surface (93b).

In the concrete structure, a cam member is further provided.
As the (9) is rotationally driven, the inclined cam surface (93a) of the third cam surface of the cam member (9) causes the magnetic head lifting lever (1) to move.
The magnetic head elevating lever (10) is driven in the approaching direction against the spring (13) by slidingly contacting the cam follower (103) of (0).
As a result, the core portion (112) of the magnetic head (110) approaches the disk surface of the disk cartridge (4), and signal recording becomes possible. At this time, the high-order cam surface (93b) of the third cam surface of the cam member (9) is brought into sliding contact with the cam follower (103), and the attitude of the magnetic head lifting lever (10) is maintained.

[0015]

In the disk cartridge loading device according to the present invention, the common cam member has three cam surfaces for operating the cartridge retracting mechanism, the holder elevating mechanism and the magnetic head elevating mechanism. By rotating the cam member in one direction, the retracting operation of the disk cartridge, the raising / lowering operation of the cartridge holder, and the raising / lowering operation of the magnetic head can be smoothly switched at a desired timing, and vibration is accompanied by the switching of the operation. It never happens.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment in which the present invention is applied to a magneto-optical disk recording / reproducing apparatus will be specifically described with reference to the drawings. As shown in FIG. 1, the magneto-optical disk recording / reproducing apparatus according to the present invention records and reproduces signals on a disk cartridge (4) in which a magneto-optical disk D is freely rotatably accommodated. In the following description, the back side along the insertion direction of the disc cartridge (4) will be referred to as the back side or the rear side of the apparatus, and the opposite direction will be referred to as the front side.

A main chassis (1) is installed above the base chassis (8), and a cartridge holder (6) is arranged between the chassis (8) and (1). The rear end of the cartridge holder (6) is pivotally supported on the main chassis (1) and can swing in the vertical direction. On the base chassis (8), a turntable (81) for rotating the magneto-optical disk in the disk cartridge (4) installed at the signal recording / reproducing position is provided. Further, on the base chassis (8), an optical pickup for recording and / or reproducing signals on the magneto-optical disk of the disk cartridge (4).
(83) and a magnetic head (110) are arranged so as to be reciprocally driven in the radial direction of the disk.

In the above magneto-optical disk recording / reproducing apparatus, the cartridge insertion port (6
By inserting the disk cartridge (4) into the cartridge holder (6) from (0) and pushing it in slightly, the drive motor (82) is started, and the power of the drive motor (82) first causes the cartridge holder (4) to move. The disc cartridge (4) in 6) is conveyed to the inside of the apparatus, and then the cartridge holder (6) is driven downward so that the disc cartridge (4) in the cartridge holder (6) is at the signal recording / reproducing position. Is installed.

As shown in FIG. 2, the main chassis (1) is provided with an opening (1a) in the movable range of the magnetic head (110), and two linear guide grooves (11) (extending in the cartridge inserting direction). 11) and one bending guide groove (12) are opened. The bending guide groove (12) includes a first groove portion (12a) extending in a direction orthogonal to the cartridge insertion direction, and a first groove portion (12).
a) A second part extending from one end in the cartridge insertion direction
It has a groove (12b).

A cartridge pull-in slide (2) is provided on the back surface of the main chassis (1), and two cut-and-raised pieces (2) formed on the cartridge pull-in slide (2) are provided.
The 1) and 21) are engaged with the linear guide grooves 11 and 11 of the main chassis 1 to guide the reciprocating movement of the cartridge retracting slide 2. A spring (3) is stretched between the main chassis (1) and the cartridge pull-in slide (2) to urge the cartridge pull-in slide (2) in the cartridge ejecting direction.

Further, the cartridge pull-in slide (2) has an L-shaped bending piece (23) protruding in an L-shape from the front end edge thereof.
A projecting piece (25) projecting downward from a side portion thereof and a strip-shaped driven piece (24) projecting downward from a rear edge of the projecting piece (25) are formed. Also, the cartridge pull-in slide (2)
A through hole (22) is formed at a position corresponding to the bending guide groove (12) of the main chassis (1).

A cartridge handling lever (5) is provided on the back surface of the cartridge pull-in slide (2). The cartridge handling lever (5) is a synthetic resin integrally molded product, and penetrates the through hole (22) of the cartridge pull-in slide (2) at the end on the back side of the base (50). The pivot shaft (51) is projected, and the opening (2) of the cartridge pull-in slide (2) is provided at the center thereof.
A pin (53) which penetrates a) and engages with the bending guide groove (12) of the main chassis (1) is provided in a protruding manner. Further, an elastic bent portion (52) that bends in a U shape is provided in a projecting manner at the front end of the base (50). In addition, the cartridge handling lever
At the center of the base (50) of (5), a lever (54) to be pressed by the tip (41) of the disc cartridge (4) shown in FIG. The base (5
A claw piece (55) engageable with a recess (42) formed in the side surface of the disc cartridge (4) is provided at the front end of the (0).

As shown in FIG. 3, the cartridge holder (6) has a cut-and-raised piece (61) to which the tip portion (52a) of the elastic bent portion (52) of the cartridge handling lever (5) should be slidably contacted.
And the L-shaped bending piece (2) of the cartridge pull-in slide (2)
The L-shaped bending piece (62) to be engaged with 3) is projected and
A first cam follower (63) protruding toward a cam member (9) described later is formed. Also, cartridge holder
A pair of support shafts (64) and (64) are projected outward at the rear ends of both side walls of (6), and the support shafts (64) and (64) are shown in FIG. The cartridge holder (6) is rotatably supported so that the cartridge holder (6) can be moved up and down.

A cam member (9) shown in FIG. 3 is provided on the base chassis (8). The cam member (9) is
The lower half has a gear part (9a) to which the power of the motor is to be transmitted, and the upper half has a cylindrical first cam part (91),
On the upper surface, a trapezoidal second cam portion (93) is projected.
The first cam portion (91) has a high-order cam surface (91a) on its upper end surface.
And a tilted cam surface (91b) and a lower cam surface (91c). The first cam portion (91) has a cartridge holder (6).
The first cam follower (63) of is in sliding contact. by this,
A cam mechanism for raising and lowering the cartridge holder (6) is configured. Also, the high cam surface (91a) of the first cam portion (91)
The stepped portion between the lower cam surface (91c) and the lower cam surface (91c) forms an arc-shaped drive cam surface (92) facing the driven piece (24) of the cartridge pull-in slide (2).
(92) and the outer peripheral surface (94) of the cam member (9) are in sliding contact with the driven piece (24) of the cartridge pull-in slide (2). This constitutes a cam mechanism for driving the cartridge pull-in slide (2). The second cam portion (93) has an inclined cam surface (93a) and a high-order cam surface (93b) on the upper surface thereof, and the second cam portion (93) has a magnetic head lifting lever (1) described later.
The end of (0) is in sliding contact. This constitutes a cam mechanism for raising and lowering the magnetic head raising / lowering lever (10).

Opening (1a) of the main chassis (1) shown in FIG.
A magnetic head elevating lever (10) is provided in the. The magnetic head elevating lever (10) is constituted by a pair of arm portions (104) (104) projecting from both sides of the strip plate portion (102).
04) (104) on both sides, a pair of support shafts (101) to be fitted to a pair of support bearings (15) (15) formed in the main chassis (1)
(101) is projected. In addition, the magnetic head lifting lever (1
A second cam follower (103) is provided on the base end portion of one arm portion (104) of (0) so as to project toward the second cam portion (93) of the cam member (9). Both arms (104) (104) of the magnetic head lifting lever (10) project further forward than the position of the support shaft (101), and as shown in FIG. 5, their tip portions (106) (106) are main. A pair of retaining pieces (14) (14) protruding from the chassis (1)
Is located outside of.

A torsion spring (13) is interposed between the main chassis (1) and one arm portion (104) of the magnetic head lifting lever (10) to rotate the arm portion (104) clockwise. The magnetic head lifting lever (1
The strip plate portion (102) of (0) is urged downward.
A coil spring (7) shown in FIG. 2 is interposed between the facing surfaces of the main chassis (1) and the cartridge holder (6) to urge the cartridge holder (6) downward.

As shown in FIG. 1, the magnetic head (110) includes a core portion (112) at the tip of a lever portion (111), and a lever portion (11).
The elasticity of 1) itself enables the core portion (112) to be pressed against the signal surface of the disc of the disc cartridge (4). In a state other than signal recording, the base end portion of the lever portion (111) of the magnetic head (110) is pushed down by the strip plate portion (102) of the magnetic head lifting lever (10), and the core portion (112).
Is separated from the disc signal surface upward, but at the time of signal recording, the band plate portion (102) of the magnetic head lifting lever (10) rises and the core portion (112) becomes The disk is lowered to the upper side, and is pressed against the disk signal surface by the elastic biasing force of the lever portion (111).

In the assembling process of the magneto-optical disc recording / reproducing apparatus, as shown in FIG.
When attaching the magnetic head lifting lever (10) to the main chassis (1), as shown in FIG. Figure 101 after fitting 101) into the support bearing (15) of the main chassis (1)
As shown in (b), rotate the magnetic head lift lever (10) to a substantially horizontal position, and attach the tip of the arm (104) to the main chassis.
Engage with the retaining piece (14) of (1). After that, the same figure
Attach the cartridge holder (6) to the main chassis (1) as shown in (c). Therefore, as shown in FIG. 6C, not only the ejecting state in which the magnetic head raising / lowering lever 10 is rotated clockwise or the cartridge retracted state, but also the magnetic head raising / lowering lever 10 as shown in FIG. 6D is counterclockwise. Even in the signal reproducing state or the signal recording state rotated in the direction, the arm portion (104) of the magnetic head lifting lever (10) engages with the retaining piece (14) of the main chassis (1), and the support shaft ( 101) will be prevented from coming off.

7 to 12 are respectively the initial state (FIG. 7) of the disc cartridge loading device of the magneto-optical disc recording / reproducing apparatus, the cartridge insertion state (FIG. 8), and FIG.
The operation states of the cartridge retracting start state (FIG. 9), the cartridge retracting completion state (FIG. 10), the signal reproducing state (FIG. 11), and the signal recording state (FIG. 12) are shown.
In these figures, in order to show the operating states of all the members, the outline of each member is drawn by a solid line regardless of the presence or absence of overlap between the members.

In the initial state shown in FIG. 7, the cartridge retracting slide (2) is pulled by the spring (3) and installed at the moving end in the disc ejecting direction. or,
Elastic bending part (52) of the cartridge handling lever (5)
Has its tip (52a) slidably contacting the cut-and-raised piece (61) on the cartridge holder (6) to apply a clockwise rotational biasing force to the base (50). As a result, the base (50) rotates clockwise, and the pin (53) is engaged with the first groove portion (12a) of the bending guide groove (12) of the main chassis (1) accordingly. Therefore, even if a shock is applied from the outside of the apparatus and acts on the cartridge retracting slide (2) in the cartridge retracting direction, the pin (53) of the cartridge handling lever (5) attached to the cartridge retracting slide (2) is ) Is the side wall (12) of the first groove portion (12a) of the bending guide groove (12) formed in the main chassis (1).
c) and slide the cartridge retracting slide
(2) and the cartridge handling lever (5) are prevented from moving. As a result, abnormal operation of the device can be prevented, and damage to the mechanism can be prevented.

The first cam follower (63) of the cartridge holder (6) is in sliding contact with the high cam surface (91a) of the first cam portion (91) of the cam member (9), whereby the cartridge holder (6). ) Is held at the rising end against the coil spring (7). The second cam follower (103) of the magnetic head lifting lever (10) is separated from the second cam portion (93) of the cam member (9), and the magnetic head lifting lever (10) is a torsion spring. The strip plate portion (102) is installed at the descending end by the urging force of (13). Therefore, the base end portion of the lever portion (111) of the magnetic head (110) is pushed down by the strip plate portion (102) of the magnetic head lifting lever (10), and the core portion (112) moves upward from the disc signal surface. It is separated.

In this state, the cartridge holder (6) is inserted through the cartridge insertion opening (60) into the cartridge holder (6).
Insert the disk cartridge (4) into it and push it in slightly. As a result, the cartridge is inserted as shown in FIG. When the cartridge is inserted, the tip (41) of the disc cartridge (4) slides in the cartridge.
The base (50) of the cartridge handling lever (5) is elastically bent (52) by abutting against the protruding piece (25) of (2) and pushing the lever (54) of the cartridge handling lever (5).
It is rotated counterclockwise against the bias of. As the base (50) of the cartridge handling lever (5) rotates counterclockwise, the claw pieces (55) move to the disk cartridge (4).
The pin (53) moves from the first groove portion (12a) of the bending guide groove (12) of the main chassis (1) to the second groove portion (12b) while being fitted into the concave portion (42) of the main chassis (1). As a result, the cartridge handling lever (5) and the cartridge pull-in slide
The movement of (2) in the cartridge insertion direction is allowed.

By pushing the disc cartridge (4) further into the cartridge holder (6), the protrusion (25) of the cartridge pull-in slide (2) is moved by the tip portion (41) of the disc cartridge (4) as shown in FIG. ) Is pressed, the cartridge pull-in slide (2) moves in the cartridge inserting direction. Along with this, the pin (53) of the cartridge handling lever (5) is attached to the main chassis.
(1) will advance through the second groove portion (12b) of the bending guide groove (12), and the pin (53) will be restrained by the second groove portion (12b),
The disc cartridge (4) is held so as not to escape from the recess (42). Then slide the cartridge retract (2)
When is moved to a predetermined position, a switch (not shown) is turned on and the drive motor (82) is activated. As a result, the cam member (9) is rotationally driven in the clockwise direction. Along with the rotation of the cam member (9), the drive cam surface (92) drives the driven piece (24) of the cartridge pull-in slide (2) to move the cartridge pull-in slide (2) further in the back of the apparatus. As a result, the cartridge handling lever (5) moves integrally with the cartridge pull-in slide (2),
As a result, the disc cartridge (4) in the cartridge holder (6) is pulled into the interior of the device.

Thereafter, as shown in FIG. 10, the cam member (9)
The outer peripheral surface (94) of the cartridge slide-contacts the driven piece (24) of the cartridge pull-in slide (2), whereby the drive of the cartridge pull-in slide (2) is completed and the pull-in operation of the disc cartridge (4) is completed. Complete.

Thereafter, as shown in FIG. 11, the cam member (9)
When the cartridge further rotates in the clockwise direction, the first cam follower (63) of the cartridge holder (6) becomes
The high cam surface (91a) of the first cam portion (91) of (9) comes into sliding contact with the inclined cam surface (91b), and accordingly, the cartridge holder (6) is urged by the coil spring (7). To descend. As a result, the disk cartridge (4) in the cartridge holder (6) is mounted on the turntable (81) on the base chassis (8). After that, the first cam follower of the cartridge holder (6) is rotated along with the rotation of the cam member (9).
(63) is an inclined cam surface (9) of the first cam portion (91) of the cam member (9).
It is separated from 1b), whereby the cartridge holder (6) is pressed and held at the lower end by the urging force of the coil spring (7). As a result, a signal reproduction state in which a signal can be reproduced from the disc of the disc cartridge (4) by the optical pickup (83) is set.

Thereafter, as shown in FIG. 12, the cam member (9)
When the cartridge further rotates in the clockwise direction, the first cam follower (63) of the cartridge holder (6) causes the cam member to move.
The second cam follower (103), which is opposed to the lower cam surface (91c) of the first cam portion (91) of (9) in a separated state and is projected from the magnetic head lifting lever (10), has a cam member. Second of (9)
It comes into sliding contact with the inclined cam surface (93a) of the cam part (93),
By driving the inclined cam surface (93a), the magnetic head elevating lever (10) rotates counterclockwise, and the strip plate portion (102) rises. As a result, the strip portion (10
2) is separated from the base end of the lever portion (111) of the magnetic head (110), and along with this, the lever portion (111) of the magnetic head (110) rotates counterclockwise and the core portion (112 ) Drops onto the disc signal surface of the disc cartridge (4). When the cam member (9) further rotates in the clockwise direction, the second cam follower (103) of the magnetic head lifting lever (10) causes the high cam surface of the second cam portion (93) of the cam member (9). It comes into sliding contact with (93b), and the rotation of the magnetic head lifting lever (10) stops. As a result, a signal recording state in which signals can be recorded on the disc of the disc cartridge (4) is set by the magnetic head (110) and the optical pickup (83).

When the disc cartridge (4) is to be ejected after the recording or reproduction of the signal is completed, the drive motor (82) is rotated in the reverse direction so that the cam member (9) is rotationally driven in the counterclockwise direction. As a result, the disc cartridge loading device changes from the signal recording state of FIG. 12 or the signal reproducing state of FIG. 11 to the cartridge pull-in complete state of FIG.
After the cartridge pull-in start state and the cartridge insertion state of FIG. 8, the initial state of FIG. 7, that is, the eject state is returned.

Disk cartridge (4) from the cartridge retracted state shown in FIG. 10 to the ejected state shown in FIG.
To eject the cartridge, slide the cartridge pull-in slide (2)
This is done by receiving the urging force of (3). In the ejected state of FIG. 7, the tip end (52a) of the elastic bent portion (52) of the cartridge handling lever (5) comes into sliding contact with the cut-and-raised piece (61) of the cartridge holder (6), and the elastic bent portion The base (5
0) rotates in the clockwise direction, and with this, the claw piece (55) separates from the recess (42) of the disk cartridge (4). As a result, the disc cartridge (4) can be taken out.

In the disc cartridge loading device of the present invention, the pin (53) is provided on the cartridge handling lever (5) conventionally provided to directly drive the disc cartridge (4), and the main body is provided with the pin (53). Due to the structure in which the bending guide groove (12) is formed in the chassis (1), the movement of the cartridge retracting slide (2) is prevented when the device receives an impact force, so that the number of parts can be increased without increasing the number of parts. Abnormal operation and damage to the mechanism are prevented.

The cam member (9) driven by the drive motor (82) moves the cartridge retracting slide (2) back and forth to move the cam surface (92) and the cartridge holder (6) up and down. A first cam portion (91) and a second cam portion (93) for raising and lowering the magnetic head raising and lowering lever (10) are provided to realize three cam operations by rotating a single cam member (9). As a result, the number of parts can be reduced, and the disk cartridge retracting operation, the cartridge holder elevating operation, and the magnetic head elevating operation can be smoothly switched.

Furthermore, the tip portions (106) and (106) of both arm portions (104) and (104) of the magnetic head lifting lever (10) are slightly extended, and a retaining piece (14) is attached to the main chassis (1). ) (14) is provided so that the spindle of the magnetic head lift lever (10) is supported.
Since the retainer of (101) is provided, it is not necessary to separately provide a component for retaining, so that the number of components can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a disc cartridge loading device according to the present invention.

FIG. 2 is an exploded perspective view showing the configuration of the disc cartridge loading device.

FIG. 3 is another exploded perspective view showing the configuration of the disc cartridge loading device.

FIG. 4 is still another exploded perspective view showing the configuration of the disc cartridge loading device.

FIG. 5 is a plan view showing a state in which a magnetic head lifting lever is attached to the main chassis.

FIG. 6 is a series of side views showing the process of attaching the magnetic head lifting lever to the main chassis and the movement of the magnetic head lifting lever.

FIG. 7 is a plan view showing an initial state of the disc cartridge loading device according to the present invention.

FIG. 8 is a plan view showing a cartridge insertion state of the apparatus.

FIG. 9 is a plan view showing a cartridge retracting start state of the apparatus.

FIG. 10 is a plan view showing a cartridge drawing-in completed state of the apparatus.

FIG. 11 is a plan view showing a signal reproduction state of the apparatus.

FIG. 12 is a plan view showing a signal recording state of the apparatus.

[Explanation of symbols]

(1) Main chassis (12) Bending guide groove (12a) First groove (12b) Second groove (13) Torsion spring (14) Locking piece (2) Cartridge pull-in slide (24) Driven piece (25) Projection piece (4) Disk cartridge (42) Recess (5) Cartridge handling lever (50) Base (51) Axis (52) Elastic bend (53) pin (54) Lever (55) Claw piece (6) Cartridge holder (63) 1st cam follower (64) Spindle (8) Base chassis (81) Turntable (82) Drive motor (83) Optical pickup (9) Cam member (91) 1st cam part (92) Drive cam surface (93) Second cam part (10) Magnetic head lifting lever (104) Arm part (101) Spindle (103) Second cam follower (110) Magnetic head (111) Lever part (112) Core part

Claims (7)

[Claims] 1. A disk cartridge inserted into a cartridge holder (6) through a cartridge insertion opening (60).
Cartridge retracting mechanism for retracting (4) to the moving end in the cartridge inserting direction, and cartridge holder
A holder lifting mechanism for moving (6) in a direction substantially orthogonal to the cartridge insertion direction to set the disc cartridge (4) at a signal recording / reproducing position, and a disc cartridge (4) at the signal recording / reproducing position. Disk cartridge loading device including a magnetic head lifting mechanism for moving the magnetic head (110) toward the disk surface of the disk, the cam member (9) rotationally driven by a drive motor (82), The member (9) has a first cam surface with which the driven portion of the cartridge retracting mechanism should engage, and a second cam surface with which the driven portion of the holder elevating mechanism should engage.
And a third cam surface to be engaged with the driven part of the magnetic head lifting mechanism. 2. The cartridge retracting mechanism comprises a cartridge retracting slide (2) slidable along the cartridge inserting direction and a cartridge retracting slide.
A cartridge handling lever (5) pivotally supported by (2) and capable of being engaged and disengaged with the disc cartridge (4) in the cartridge holder (6), and a spring for urging the cartridge retracting slide (2) in the cartridge ejecting direction. 2. The disk cartridge loading device according to claim 1, further comprising: (3), wherein a driven portion with which the first cam surface of the cam member (9) is engaged is formed at an end portion of the cartridge pull-in slide (2). . 3. The first cam surface of the cam member (9) is a cam member.
Cartridge retracting slide (2) with rotation of (9)
3. The disk cartridge loading according to claim 2, wherein the drive cam surface (92) drives the end portion of the disk and the outer peripheral surface (94) is a cylindrical surface centering on the rotation axis of the cam member (9). apparatus. 4. The holder raising / lowering mechanism includes a pivot portion for pivotally supporting an end portion of the cartridge holder (6) in the cartridge insertion direction and a spring (7) for biasing the cartridge holder (6) toward a signal recording / reproducing position. ) And a cam follower (63) formed on the cartridge holder (6) is a cam member.
Claim 1 thru | or 3 engaging with the 2nd cam surface of (9).
The disk cartridge loading device according to any one of 1. 5. The second cam surface of the cam member (9) is a cam member.
(9) A high-order cam surface (91a), an inclined cam surface (91b), and a low-order cam surface (9) which are continuously formed on an arc centered on the rotation axis.
The disk cartridge loading device according to claim 4, which is constituted by 1c). 6. The magnetic head lifting mechanism comprises a magnetic head (11
The core part of the magnetic head (110) is engaged with the lever part (111) of (0)
Magnetic head up-and-down lever (10) for moving the (112) toward and away from the disk surface of the disk cartridge (4)
And a spring (13) for urging the magnetic head lifting lever (10) in the separating direction, the cam follower (103) formed at the end of the magnetic head lifting lever (10) includes a cam member (9). 6. The disk cartridge loading device according to claim 1, which is engaged with the third cam surface of the disk cartridge. 7. The third cam surface of the cam member (9) is a cam member.
7. The disc cartridge loading device according to claim 6, wherein the inclined cam surface (93a) and the high-order cam surface (93b) are formed continuously on an arc centered on the rotation axis of (9).