JP3525452B2 - Disk drive device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when a disc cartridge is inserted into a cartridge holder, automatically opens the shutter of the disc cartridge by a shutter opening / closing arm and slides a slide plate unlocked by a slide plate lock member. Then, the present invention relates to a disk drive device in which the cartridge holder is lowered and the disk cartridge inserted in the holder is chucked on a turntable.

[0002]

2. Description of the Related Art FIG.
The one shown in FIG. 14 is known.

FIG. 13 is a perspective view of the disk drive device 101, and FIG. 14 is an exploded perspective view. The disk drive device 101 includes a cartridge holder 102 into which a disk cartridge 201 is inserted, and the cartridge holder 1
02, a slide plate 103 for moving up and down, a chassis 104 on which the cartridge holder 102 can be moved up and down and the slide plate 103 is slidable, a front panel 105, and a shield cover 1
06 and.

A shutter opening / closing arm 111 and an arm return spring 112 are provided on the upper surface of the cartridge holder 102.

The slide plate 103 is mounted on the chassis 104 so as to be slidable in the directions of arrows AB.

The slide plate 103 is applied with a sliding force in the direction of arrow A by coil springs 113 and 114 for applying a sliding force.

On the lower surface of the slide plate 103,
A lock member engaging pin 115 that engages with a slide plate lock member (trigger arm) 121 described below.
Is provided.

The slide plate lock member 121 is rotatably attached to the chassis 104 by a shaft 122, and a turning force in the clockwise direction (arrow C direction) of FIG. 14 is given by a coil spring 123 for giving a turning force. ing.

The slide plate lock member 121
Is engaged with a lock member engaging pin 115 provided on the slide plate 103 when the slide plate 103 is slid to a predetermined position against the spring force of the coil springs 113 and 114 for applying a slide force. In combination with the pin engaging surface 124 that prevents the slide plate 103 from sliding back, and the cartridge holder 10.
2 when the disk cartridge 201 is inserted,
It has a cartridge contact pin 125 with which the front end surface 201a of the disc cartridge 201 abuts.

Then, the pin 11 for engaging the lock member
When the disc cartridge 201 is inserted into the cartridge holder 102 under the condition that 5 is engaged with the pin engagement surface 122, the disc cartridge 201
The shutter 202 of the disc cartridge 201 is opened by the shutter opening / closing arm 111.
The leading end surface 201a of the slide plate lock member 121 contacts the cartridge contact pin 125, and the slide plate lock member 121 rotates counterclockwise against the spring force of the coil spring 123 for imparting the turning force.

When the disc cartridge 201 is completely inserted into the cartridge holder 102, the pin engaging surface 124 and the lock member engaging pin 115 are disengaged.

When the pin engaging surface 124 is disengaged from the lock member engaging pin 115, the slide plate 10 is released.
3 is a coil spring 113 for applying a sliding force, 1
The spring force of 14 slides in the direction of arrow A.

When the slide plate 103 slides in the direction of arrow A, inclined groove portions 126 ... 12 provided on the left and right side surfaces of the slide plate 103 for raising and lowering the holder.
At 6, the cartridge holder 102 is lowered.

When the cartridge holder 102 descends,
The disc 203 in the disc cartridge 201 housed in the cartridge holder 102 is chucked on the turntable 127 provided on the chassis 104, and the disc 203 rotates together with the turntable 127 to perform recording / reproduction.

After the end of recording and reproduction, the slide plate 10
When the eject button 128 provided in No. 3 is pressed, the slide plate 103 slides in the direction of arrow B against the spring force of the coil springs 113 and 114 for applying the slide force.

When the slide plate 103 enters the predetermined position, the slide plate lock member 12 is moved.
1 rotates in the direction of arrow C by the spring force of the coil spring 123 for imparting rotation, engages with the pin 115 for engaging the lock member, and prevents the slide plate 103 from returning.

On the other hand, when the slide plate 103 is slid in the direction of the arrow B, the cartridge holder 1 is moved by the inclined groove portions 126 ... 126 for raising and lowering the holder.
02 rises.

When the cartridge holder 102 rises, the disk cartridge 201 is pushed out of the cartridge holder 102 by the spring force of the shutter opening / closing arm 111 and the arm return spring 112.

Incidentally, 131 and 132 are upper and lower heads, and 1
33 is a head arm to which the upper head 131 is attached, 1
34 is a head carriage that supports the head arm 133 so as to be rotatable in the vertical direction, and 135 is a head carriage drive mechanism. The head carriage drive mechanism 135 includes a lead screw 136 and a stepping motor 137 that rotates the lead screw 136. It is configured.

[0020]

The conventional disk drive device described above has the following problems.

(1) Since the shutter opening / closing arm 111 and the slide plate lock member 121 are constructed as independent and separate parts, the number of parts is increased and the manufacturing cost is increased.

(2) Since the shutter opening / closing arm 111 and the slide plate lock member 121 are independent and separate parts, they must be assembled to the cartridge holder 102 and the chassis 104, which increases the assembly cost.

(3) A spring for applying a turning force to each of the shutter opening / closing arm 111 and the slide plate lock member 121, that is, the shutter opening / closing arm 111.
The arm return spring 112, and the slide plate lock member 121 a coil spring 123 for applying a turning force.
Must be provided, which further increases the number of parts.

(4) Arm return spring 1 at the time of ejection
The spring force of 12 may forcefully push the disc cartridge 201 out of the cartridge holder 102 via the shutter opening / closing arm 111, causing the disc cartridge 201 to drop out of the cartridge holder 102.

The present invention has been made for the purpose of solving the above conventional problems.

[0026]

According to the first aspect of the invention, when the disc cartridge is inserted into the cartridge holder, the shutter opening / closing arm rotates about the pivot shaft against the spring force of the arm return spring. When the shutter of the disc cartridge is opened, the slide plate lock member is also rotated, the engagement between the slide plate lock member and the slide plate is released, and the slide plate slides by the spring force of the spring for applying a slide force, in a disk drive device adapted to lowering the cartridge holder, the slide plate locking member, the shutter opening and closing arm integrally formed Then co
In addition, the arm return spring is formed in the shape of a torsion coil spring.
The coil part at the center of the arm return spring
Attach to the arm return spring attachment part provided on the ridge holder,
One end of the arm return spring is connected to the shutter opening / closing arm.
, And attach the other end of the arm return spring to the cartridge.
The cartridge holder by inserting the cartridge holder into one side.
In addition to the arm return spring that has entered one side of the rudder
A disc whose end has been inserted into the cartridge holder
Allowed contact on one side of the distal end surface of the cartridges.

According to a second aspect of the present invention, in the disk drive device according to the first aspect, the slide plate lock member is provided at one end of the shutter opening / closing arm with an arm portion extending at a predetermined opening angle with respect to the shutter opening / closing arm. It is formed by providing an arc-shaped slide plate engaging surface about the pivot shaft at the tip of the arm portion.

According to a third aspect of the present invention, in the disk drive device according to the second aspect, the arcuate slide plate engaging surface is formed by an outer side surface of a bent portion obtained by bending the tip of the arm portion in a vertical direction.

According to a fourth aspect of the present invention, in the disk drive device according to the third aspect, a step portion for absorbing coasting is provided between the end surface of the bent portion and the end surface of the non-folded portion of the arm portion. Provided.

[0030]

[0031]

[0032]

[0033]

[Function] The disc cartridge is inserted in the proper posture.
When it comes out, one side of the tip of the disk cartridge
The arm return spring is pushed by the inclined surface provided on the
The other side of the disk escapes and moves further
Insertion is allowed, and the disc cartridge is not in the proper posture.
Disc cartridge when inserted in
The other end of the arm return spring is projected onto the end face (non-tilted face) of
Prevents further insertion of disc cartridge
It Further, since the shutter opening / closing arm and the slide plate lock member are integrally formed, when the disc cartridge is inserted into the cartridge holder, the shutter opening / closing arm is pushed by the disc cartridge and pivots about the pivot shaft, As the shutter of the disk cartridge is opened, the slide plate lock member also rotates in the unlocking direction about the pivot shaft.

When the slide plate lock member is rotated to the lock release position, the slide plate lock member is disengaged from the slide plate, and the lock of the slide plate is released.

The slide plate unlocked by the slide plate lock member slides by the spring force of the plate drive spring to lower the cartridge holder.

In the disk drive device according to the second aspect of the present invention, the slide plate engaging surface is formed in an arc shape with the pivot shaft as the center. Therefore, the disk cartridge is inserted into the cartridge holder and the slide plate together with the shutter opening / closing arm. Even when the lock member rotates in the unlocking direction, the slide plate engaging surface always engages with the slide plate at a certain distance (point) from the pivot shaft, and the slide plate is engaged until unlocking. To prevent it from sliding in the front-back direction.

In the disk drive device according to the third aspect of the present invention, since the slide plate engaging surface is formed by bending the tip of the arm portion in the vertical direction, the slide plate engaging surface is not the end surface (broken surface) of the arm portion. , The front surface or the back surface of the arm portion.

According to the disk drive device of the fourth aspect, since the step portion is provided between the end surface of the bent portion and the end surface of the non-bent portion of the arm portion, the coasting is absorbed by the step portion.

[0039]

[0040]

[0041]

[0042]

[0043]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS.

First, a schematic structure of the disk drive device of the present invention will be described with reference to FIGS.

FIG. 1 is a perspective view of the disk drive device, FIG. 2 is an exploded perspective view, and FIG. 3 is an enlarged perspective view of a main part.

1 and 2, reference numeral 1 is a disk drive device.

In the disc drive device 1, when the disc cartridge 2 is inserted into the cartridge holder 5 from the cartridge insertion port 4 of the front panel 3, the shutter opening / closing arm 6 moves the arm return spring 8 about the pivot shaft 7. The shutter 9 of the disk cartridge 2 is opened while rotating clockwise against the spring force.

When the disc cartridge 2 is completely inserted into the cartridge holder 5, the slide plate lock member (trigger arm) 11 and the lock provided on the slide plate 12 shown in FIGS. The engagement with the member engaging portion 13 is released, and the slide plate 12 slides in the direction of arrow A by the spring force of the spring 14 for applying a slide force to lower the cartridge holder 5.

Next, the shutter opening / closing arm 6 and the slide plate lock member 11 will be described with reference to FIGS.

The shutter opening / closing arm 6 is formed of a sheet metal, and as shown in FIG. 4, one end side is rotatably attached to the upper surface of the cartridge holder 5 by a pivot shaft 7, and the other end side ( A shutter operating claw 16 is provided on the free end side).

Then, as described above, when the disc cartridge 2 is inserted into the cartridge holder 5, the shutter operation claw fitting concave portion 18 provided on one side of the shutter mounting portion 17 of the disc cartridge 2 is provided with the shutter. The operating claw 16 enters and pushes one side of the shutter 9 with the shutter operating claw 16 to open the shutter 9.

The slide plate lock member 11 is formed integrally with the shutter opening / closing arm 6.

The slide plate lock member 11 is
An arm portion 21 extending at a predetermined opening angle θ with respect to the shutter opening / closing arm 6 is provided on one end side of the shutter opening / closing arm 6, and the tip of the arm portion 21 has an arc shape with the pivot shaft 7 as the center. A slide plate engaging surface (lock surface) 22 is provided, and the slide plate engaging surface 2
It is formed by providing a lock release surface 22a in the sliding direction of the slide plate so as to be continuous with one end portion of 2.

The arm portion 21 is formed integrally with the shutter opening / closing arm 7 when the shutter opening / closing arm 7 is formed by punching with a metal plate.

The tip surface 21a of the arm portion 21 is shown in FIG.
As shown in FIG. 5, the arcuate surface centered on the pivot shaft 7 is punched out.

Then, the slide plate engaging surface 22 is formed by vertically bending the vicinity of the front end surface 21a of the arm portion 21 punched out in the arc shape.

As described above, when the tip of the arm portion 21 is bent in the vertical direction to form the slide plate engaging surface 22, the end portion of the slide plate engaging surface 22 is formed as shown in FIG. There is a risk that the coast 23 will be generated and the coast 23 will project toward the slide plate engagement surface 22 side, and the smooth rotation of the slide plate lock member 11 will be hindered.

When the tip of the arm portion 21 is bent to form the slide plate engaging surface 22, the end surface 21c of the bent portion 21b and the end surface 21e of the non-bent portion 21d are flush with each other. It is caused by doing.

Therefore, before bending the tip of the arm portion 21, as shown in FIG. 7, the side portion of the bent portion 21a is cut out, and a step portion 24 is provided between the bent portion 21a and the non-folded portion 21b. deep.

When the step portion 24 is provided and the bent portion 21 is bent as described above, the coast 23 is absorbed by the step portion 24, and as shown in FIG.
It can be prevented from protruding to the side.

As shown in FIG.
As shown in, the lock member engaging portion 13 of the slide plate 12 is engaged, and the slide plate 12 is in a locked state.

When the slide plate lock member 11 rotates about the pivot shaft 7 by a predetermined angle,
As shown in FIG. 11, the slide plate engaging surface 22
The lock member engaging portion 13 is disengaged from the slide plate 12, and the slide plate 12 is unlocked.

As shown in FIG. 12, the slide plate 12 unlocked by the slide plate lock member 11 slides by the spring force of the spring 14 for applying a slide force to lower the cartridge holder 5.

The lock member engaging portion 13 is formed by cutting and raising a part of the slide plate 12, as shown in FIG.

The lock member engaging portion 13 is formed to have a predetermined height width W so that the lock member engaging portion 13 engages with the slide plate engaging surface 22 at each of the raised position and the lowered position of the cartridge holder 5. Has become.

A slide plate lock member guide piece 25 located above the slide plate lock member 11 is provided in the vicinity of the lock member engagement portion 13 of the slide plate 12.

A guide pin 26 is provided on the lower surface of the slide plate lock member guide piece 25, and the guide pin 26 regulates the upward and downward movement of the slide plate lock member 11.

Next, the arm return spring 8 will be described.

As shown in FIG. 9, the arm return spring 8 is formed in the shape of a torsion coil spring, and the central coil portion 8a is attached to a spring attachment portion 31 provided on a cartridge holder described later. There is.

The straight portion 8 on one end side of the arm return spring 8
b is a spring locking portion 2 provided on the shutter opening / closing arm 6.
7, the shutter opening / closing arm 6 and the slide plate lock member 11 are given a counterclockwise turning force.

The linear portion 8c on the other end side of the arm return spring 8 is bent in a dogleg shape, and a cartridge engaging portion 8d is provided at the tip thereof.

The cartridge engaging portion 8d is formed by bending the tip of the linear portion 8c downward at a right angle.

The cartridge engaging portion 8d is introduced to one side of the cartridge holder 5 through the cutout portion 28 provided on the upper surface of the cartridge holder 5.

When the disc cartridge 2 is erroneously inserted, the cartridge engaging portion 8d comes into contact with the end face (non-inclined face) 2a of the disc cartridge 2 as shown by the chain double-dashed line in FIG. The disc cartridge 2 is prevented from being inserted into the cartridge holder 5 any more.

When the disc cartridge 2 is properly inserted, the inclined surface 2b provided on one side of the disc cartridge 2 comes into contact with the cartridge engaging portion 8d as shown by the broken line in FIG. .

Therefore, when the disc cartridge 2 is further inserted, the cartridge engaging portion 8d is formed on the inclined surface 2b.
Are released toward the side of the disc cartridge 2 and are continuous with the inclined surface 2b.
It is pressure-bonded to the side surface 2c.

Next, the arm return spring mounting portion 31 will be described.

The arm return spring mounting portion 31 is formed by cutting and raising the upper surface of the cartridge holder 5 as shown in FIG.

The arm return spring mounting portion 31 is formed in an arc shape having a curvature substantially the same as the inner diameter of the coil portion 8a of the arm return spring 8.

On the upper end of the arm return spring mounting portion 31, there is integrally formed a spring pressing piece 32 for suppressing the base portion of the straight portion 8b extending from the coil portion 8a of the arm return spring 8.

The arm return spring 8 is attached to the arm return spring attachment portion 31 with the coil portion 8a inserted in the outer peripheral portion of the arm return spring attachment portion 31.

Next, the structures of the cartridge holder 5, the slide plate 12, etc. will be briefly described with reference to FIG.

The cartridge holder 5 includes a top plate 41 having a concave shape in plan view, side plates 42, 42 provided on both left and right sides of the top plate 41, and a bottom plate provided at the lower ends of the side plates 42, 42. It is composed of 43 and 43.

When the disc cartridge 2 is inserted into the cartridge holder 5, the left and right side portions of the disc cartridge 2 are supported by the left and right bottom plates 43, 43.

A pair of front and rear rollers 44 and 45 are provided on the outer surfaces of the left and right side plates 42 and 42 of the cartridge holder 5, and these rollers 44 and 45 are used for the cartridge holder of the slide plate 12 described below. It is inserted into the cam grooves 48 and 49 for lifting operation.

The slide plate 12 is made of a metal plate and has a pair of left and right leg pieces 46 and 47 on both sides thereof.
Is bent.

The leg pieces 46 and 47 have a pair of front and rear inclined cam grooves 48 and 49 for vertically moving the cartridge holder.

The pair of front and rear rollers 44 and 45 are inserted into the pair of front and rear cam grooves 48 and 49.

The slide plate 12 has a pair of front and rear slide guide holes 51 and 52 on both left and right sides, and a pair of left and right slide force attaching springs are attached to the inside of the slide guide holes 51 and 52. It has notches 53 and 54 for.

Reference numeral 55 is an eject button.

Next, the chassis 61 will be described.

The chassis 61 has a pair of front and rear guide pins 62 and 63 (one guide pin 63 also serves as a positioning pin) on both left and right sides of the upper surface.
Then, by inserting the guide pins 62, 62 into the slide guide holes 51, 52, the slide plate 12 is moved on the chassis 61 in the front-back direction within the range of the guide pins 62, 63 and the slide guide holes 51, 52. It is mounted slidably in the direction of arrow AB.

Spring mounting recesses 64, 65 are provided on the upper surface of the chassis 61 at positions corresponding to the spring mounting notches 53, 54 provided in the slide plate 12.

Springs 14 for applying a sliding force are mounted in the recesses 64 and 65, respectively.

One end of the sliding force imparting spring 14 is engaged with a spring engaging portion 66 provided on the chassis 61,
The other end side is a spring locking portion 6 provided on the slide plate 12.
7 is applied to the slide plate 12 to apply a sliding force to the slide plate 12. Spring 1 for applying the sliding force
Slide plate 12 to which a sliding force is applied by 4
The guide pins 62, 63 have slide guide holes 51, 5
2 is slid maximally in the direction of arrow A until it abuts one end 51a, 52a.

With the slide plate 12 fully slid in the direction of arrow A, the rollers 44 and 45 are positioned at the lower ends of the inclined cam grooves 48 and 49, and the cartridge holder 5 is lowered. It has become.

When the eject button 55 is pressed while the cartridge holder 5 is descending, the slide plate 12 slides in the direction of arrow B against the spring force of the spring 14 for applying a sliding force.

When the slide plate 12 slides in the direction of arrow B, the roller 4 is moved by the inclined cam grooves 48 and 49.
4, 45 are pushed up, and the cartridge holder 5 rises. When the slide plate 12 slides in the direction of the arrow B, the lock member engagement portion 13 moves along the lock release surface 22a that is continuous with the slide plate engagement surface 22 of the slide plate lock member 11.

At the same time when the lock releasing surface 22a and the lock member engaging portion 13 are disengaged, the slide lock member 11 is rotated counterclockwise by the spring force of the arm return spring 8 to move the slide plate. The engagement surface 22 engages with the lock member engagement portion 13 to lock the slide plate 12.

Reference numeral 71 is a turntable provided on the chassis 61, 72 is a head, and 73 is the head 72.
Is attached to the head arm, 74 is a head carriage to which the head arm 73 is attached so as to be movable up and down, 7
Reference numeral 5 is a guide shaft for guiding the traveling of the head carriage 74, and 76 is a head carriage drive mechanism for traveling the head carriage 74.

The head carriage drive mechanism 76 includes a lead screw 78 with which a needle 77 provided on the head carriage 74 is engaged, and the lead screw 7
It is composed of a stepping motor 79 for rotating 8.

When the lead screw 78 is rotated by the stepping motor 79, the head carriage 7 is rotated.
4 moves in the radial direction of the disk on the turntable 72 along the guide shaft 75.

The head arm 73 is provided with a holder engaging portion 81 on one side, and the holder engaging portion 8 is provided.
1 is adapted to be engaged with a head arm engaging portion 82 provided on the cartridge holder 5.

Then, when the cartridge holder 5 is raised, the head arm 73 is raised.

Reference numeral 83 is a shield cover.

Next, the operation of the disk drive device of the embodiment will be described.

The disc cartridge 2 is inserted into the cartridge holder 5 in the raised position.

When the disc cartridge 2 is erroneously inserted (for example, when the disc cartridge 2 is turned upside down), the cartridge engaging portion 8d provided at one end of the arm return spring 8 as shown by the chain double-dashed line in FIG. , The end surface of the disc cartridge 2 is abutted to prevent the disc cartridge 2 from being inserted further.

When the disc cartridge 2 is properly inserted, as shown by the broken line, the disc cartridge 2 is inserted.
The inclined surface 2b provided on one side of the cartridge abuts on the cartridge engaging portion 8d.

Therefore, the cartridge engaging portion 8d is pressed by the inclined surface 2b and the cartridge engaging portion 8d
It escapes to the side and contacts the side surface of the disc cartridge 2. When the disc cartridge 2 is further inserted, as shown in FIG.
The shutter operating pawl 16 provided on the shutter opening / closing arm 6 enters the recess 18 for fitting the shutter operating pawl provided on the.

When the disc cartridge 2 is further inserted, the shutter opening / closing arm 6 is pressed by the disc cartridge 2 and rotates in the clockwise direction against the spring force of the arm return spring 8 to open the shutter 9.

When the shutter opening / closing arm 6 rotates clockwise, the slide plate lock member 11 integrated with the shutter opening / closing arm 6 also rotates clockwise.

When the disc cartridge 2 is inserted to a predetermined position and the shutter opening / closing arm 6 and the slide plate lock member 11 are rotated clockwise by a predetermined angle,
As shown in FIG. 11, the slide plate engagement surface 22 of the slide plate lock member 11 and the lock member engagement portion 13 of the slide plate 12 are disengaged, and the lock of the slide plate 12 is released.

Slide plate 12 unlocked
Is a spring 1 for applying a sliding force as shown in FIG.
The cartridge holder 5 is lowered by sliding in the direction of arrow A by the spring force of 4 and 14.

When the cartridge holder 5 descends, the disc of the disc cartridge 2 housed in the holder 5 is chucked on the turntable 71.

On the other hand, together with the cartridge holder 5,
The head arm 73 also descends, and the head 72 attached to the tip of the head arm 73 is brought into contact with the surface of the disk.

Then, the head carriage drive mechanism 7
The head carriage 74 is moved by 6 to perform recording / reproduction of the disc.

When recording / reproducing is finished, the eject button 55
When is pressed, the slide plate 12 slides in the direction of the arrow B to raise the cartridge holder 5 and the slide plate 12 is locked by the slide plate lock member 11 as described above.

When the cartridge holder 5 rises, the disc cartridge 2 housed in the cartridge holder 5 comes out from the positioning pin which is also used by the guide pin 63 provided on the chassis 61, and the cartridge holder 5
Then, the state becomes a state in which the cartridge can be ejected (ejectable), and the shutter opening / closing arm 6 and the arm return spring 8 eject the cartridge holder 5.

When the disc cartridge 2 is pushed out from the cartridge holder 5, the cartridge engaging portion 8d provided on one end side of the arm return spring 8 which is in contact with the side surface of the disc cartridge 2 has the cartridge engaging portion 8d. A proper braking force is applied to the disk cartridge 2 to prevent the disk cartridge 2 from being rapidly pushed out of the cartridge holder 5 and jumping out of the cartridge holder.

[0121]

The disk drive device of the present invention has the following effects.

(1) In the disk drive device of the first aspect, since the shutter opening / closing arm and the slide plate lock member are integrally formed, the number of parts can be reduced accordingly, and the manufacturing cost can be reduced.

Further, if one of them is assembled, the other is naturally assembled, so that the assembly cost can be reduced. In addition, a disc cartridge is attached to the arm return spring.
The disc cartridge
It is no longer necessary to provide a separate mechanism
The structure of the quad drive can be further simplified.
It

(2) In the disk drive device of the second aspect, since the slide plate engaging surface is formed in an arc shape around the pivot shaft of the shutter opening / closing arm, even if the shutter opening / closing arm rotates, The slide plate engaging surface is
The slide plate is always engaged with a fixed position to prevent the slide plate from moving even while the shutter opening / closing arm is rotating to open the shutter.

(3) In the disk drive device of the third aspect, since the arc-shaped slide plate engaging surface is formed by bending the tip of the arm portion in the vertical direction, the tip surface of the arm portion is directly attached to the slide plate. Compared with the case of using the engagement surface, the slide plate lock member can be smoothly rotated with respect to the slide plate.

Because the tip end surface of the arm portion is formed by punching a metal plate or the like, it has a so-called fractured surface (rough surface) and the edge contacts the slide plate, so that the slide plate It hinders the smooth rotation of the lock member.

On the other hand, when the tip of the arm portion is bent to form the slide plate engagement surface, the smooth front surface or the back surface of the arm portion becomes the slide plate engagement surface.

(4) In the disk drive device according to a fourth aspect of the present invention, the inertia generated when the slide plate engaging surface is bent is absorbed by the step portion for absorbing the inertia, and the inertia is slide plate locked. It prevents the rotation of the member from being adversely affected.

[0129]

[0130]

[0131]

[0132]

[0133]

[Brief description of drawings]

FIG. 1 is a perspective view.

FIG. 2 is an exploded perspective view.

FIG. 3 is an enlarged perspective view of a main part.

FIG. 4 is a plan view of a shutter opening / closing arm and a slide plate lock member.

FIG. 5 is a manufacturing process drawing.

FIG. 6 is a manufacturing process diagram.

FIG. 7 is a manufacturing process diagram for solving the problem of inertia.

FIG. 8 is a manufacturing process diagram for solving the problem of inertia.

FIG. 9 is a plan view of the disc cartridge in the wrong insertion prevention state.

FIG. 10 is a plan view showing a state in which the disc cartridge is inserted to the position of the shutter opening / closing arm.

FIG. 11 is a plan view at the moment of unlocking.

FIG. 12 is a plan view showing a state where the slide plate has slid.

FIG. 13 is a perspective view of a conventional example.

FIG. 14 is an exploded perspective view of a conventional example.

[Explanation of symbols]

1 ... Disk drive device 2 ... Disk cartridge 5 ... Cartridge holder 6 ... Shutter open / close arm 7 ... Axis 8 ... Arm return spring 8a ... coil part 8b, 8c ... Straight part 8d ... Cartridge engaging part 9 ... Shutter 11 ... Slide plate lock member (trigger arm) 12 ... Slide plate 13 ... Lock member engaging portion 14 ... Spring for applying sliding force 21 ... Arm part 21a ... Bent section 21b ... Unfolded portion 22 ... Slide plate engaging surface 23 ... Coastal meat 24 ... Step 31 ... Arm return spring mounting part

Claims (4)

(57) [Claims] 1. When a disc cartridge is inserted into a cartridge holder, the shutter opening / closing arm opens the shutter of the disc cartridge while rotating about a pivot shaft against a spring force of an arm return spring, and a slide plate. The lock member also rotates, the engagement between the slide plate lock member and the slide plate is disengaged, and the slide plate slides by the spring force of the spring for applying a slide force to lower the cartridge holder. in the disk drive apparatus, the slide plate lock member is formed integrally with the shutter opening and closing arm, the arm return spring is formed into a torsion coil spring-like
And the coil part at the center of the arm return spring is
Attached to the arm return spring attachment part provided on the trig holder
One end of the arm return spring opens and closes the shutter.
The other end of the arm return spring is locked to the arm.
If one side of the cartridge holder is
The arm return that has entered one side of the trig holder
Insert the other end of the spring into the cartridge holder.
Can come in contact with one side of the tip surface of the disk cartridge
A disk drive device characterized by: 2. The disk drive device according to claim 1, wherein the slide plate lock member is provided with an arm portion extending at a predetermined opening angle with respect to the shutter opening / closing arm at one end side of the shutter opening / closing arm. A disk drive device formed by providing an arc-shaped slide plate engaging surface around a pivot shaft at the tip of an arm portion. 3. The disk drive device according to claim 2, wherein the arcuate slide plate engaging surface is formed by an outer surface of a bent portion obtained by bending the tip of the arm portion in a vertical direction. 4. The disk drive device according to claim 3, wherein the arm portion absorbs coasting between the end surface of the bent portion and the end surface of the non-folded portion when the bent portion is bent. Disk drive device having a stepped portion for use.