JP3496236B2 - Disc loading device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc loading device suitable for use in a disc device for recording / reproducing a 3.5-inch floppy disc.

[0002]

2. Description of the Related Art Disk devices such as floppy disk devices are widely used in office computers, word processors, etc., including personal computers, and their spread is remarkable.

Conventionally, this type of disc device is provided with a disc holder that holds a disc cartridge so that the disc cartridge can be inserted and removed, and a disc loading device that has a slide plate for giving an elevating operation to the cartridge holder.

In the disk loading device thus constructed, when the disk cartridge is inserted into the cartridge holder, the disk cartridge is lowered from the unloading position to the loading position by the lowering operation of the cartridge holder due to the movement of the slide plate in the cartridge withdrawing direction. When the eject button is pushed in the cartridge inserting direction, the disc cartridge is moved from the loading position to the unloading position by the upward movement of the cartridge holder caused by the movement of the slide plate in the cartridge inserting direction.

By the way, in this type of disk loading device, when the slide plate is arranged above the cartridge holder, it communicates with the pin moving groove extending in the direction of inserting / removing the disk cartridge into / from the chassis. A guide groove consisting of a pin attachment / detachment groove is provided, and the slide plate is attached / detached to / from the chassis from the pin attachment / detachment groove of the guide groove.Therefore, there is a stopper mechanism that restricts movement of the slide plate in the disc cartridge insertion direction. You will need it.

That is, without such a stopper mechanism, when the slide plate is pressed in the inserting direction during normal use, the pin may come out of the pin attaching / detaching groove and the slide plate may come off from the chassis. Because.

Therefore, in the conventional disk loading device, as a stopper mechanism, (1) a stopper is provided on the cover, (2) a stopper component is attached to the chassis, or (3) the stopper is formed by bending the side plate of the chassis. What is formed is considered.

[0008]

However, in the prior art (1), when the slide plate is separated from the chassis by pressing the eject button before the cover is assembled, the slide plate needs to be reattached to the chassis. However, there is a problem that the assembly work is complicated.

On the other hand, in the cases (2) and (3), there is a problem that the cost becomes high due to the increased number of parts or the complicated side plate shape.

The present invention has been made in view of such circumstances, and simplifies the assembling work, and
It is intended to provide a disc loading device capable of reducing the cost.

[0011]

DISCLOSURE OF THE INVENTION In a disk loading apparatus according to the present invention, a stopper for restricting movement of a slide plate in a disk cartridge insertion direction is integrally provided on a cartridge holder, and a pin is moved along the horizontal groove on the stopper. The eject button having a contactor capable of abutting within the stroke is detachably attached to the slide plate.

[0012]

In the present invention, when the eject button is pressed in the inserting direction of the disk cartridge, the contact of the edge eject button contacts the stopper before the pin of the slide plate faces the vertical groove.

[0013]

Embodiments of the present invention will be described in detail below with reference to embodiments shown in the drawings.

FIG. 1 is an exploded perspective view showing a disc loading device according to the present invention, and FIGS. 2A to 2C are plan views showing a state in which an eject button is removed from a slide plate of the disc loading device according to the present invention. 3A to 3C are a side view and a front view, and FIGS. 3A to 3C are a plan view, a side view and a front view showing a state in which an eject button is attached to a slide plate of the disc loading device of the present invention, FIGS. FIG. 3B is a side view showing a disc loading state and a disc unloading state of the disc loading device according to the present invention.

In FIG. 1, reference numeral 1 denotes a chassis having a spindle motor shaft 2 as a disk rotation center and a disk table 3 which is rotated by the drive of the spindle motor shaft 2, and two side plates which face each other. 4, 5 and a bottom plate 6 that connects these side plates 4, 5 and is housed in a device housing (not shown) such as a personal computer.

The both side plates 4 and 5 of the chassis 1 are entirely formed of sheet metal, and a first guide groove 7 opening upward and extending vertically is provided at a substantially central portion in the front-rear direction. . Further, on both side plates 4 and 5 of the chassis 1, there are provided a second groove 8a which extends in the inserting / removing direction of the disk cartridge D, and which has a horizontal groove 8a for pin movement and a vertical groove 8b for connecting / disconnecting the pin which communicates with the horizontal groove 8a. A guide groove 8 is provided.

On the other hand, the bottom plate 6 of the chassis 1 is formed of a die-cast molded body entirely made of aluminum, and a holding body 9 having a through hole 9a opening in the front-rear direction is provided on the right side portion of the rear edge. There is.

Reference numeral 10 denotes a stepping motor for feeding the head carriage, which is fixed to a rear position of the holding body 9. The output shaft 11 of the stepping motor 10 is formed by a lead screw shaft that extends in the front-rear direction and has a spiral V-shaped groove 11a, and a tip portion of the output shaft 11 is a bearing (see FIG. (Not shown).

Reference numeral 12 denotes a guide shaft which is parallel to the output shaft 11 and is held on the left side of the rear end edge of the chassis 1 so as to guide a head carriage described later in the front-back direction.

Reference numeral 13 denotes a head carriage having a first head 14 for recording / reproducing on the upper surface of its tip, which is held above the bottom plate 6 so as to be movable back and forth, and is moved forward and backward by driving the stepping motor 10. Is configured to be able to. A rising block 15 protruding upward is attached to a rear end edge of the head carriage 13.

A needle pin 16 projecting obliquely rearward and a leaf spring 17 for pressing the needle pin 16 to the groove wall in the V-shaped groove 11a of the output shaft 11 are attached to the right side portion of the rising block 15. A bearing 18 having a holding hole (not shown) through which the guide shaft 12 is inserted via a bush (not shown) is attached to the left side portion.

Reference numeral 19 denotes a second head corresponding to the first head 14.
A head arm having the head 20 on the lower surface of its tip,
The rising block 15 is swingably attached via an elastic piece 21. On the left side edge of the head arm 19, an arm swinging restrictor 22 protruding to one side is provided.
Are provided integrally.

Reference numeral 23 is a slide plate having a U-shaped cross-section that opens downward, and includes a front piece 24 extending in the left-right direction and two side pieces 26 extending in the front-rear direction which are connected to each other by reinforcing pieces 25. It comprises a ceiling plate 27 and two side plates 28 formed by bending the side plates 26 of the ceiling plate 27 and extending in the front-rear direction, and is provided on the chassis 1 so as to be movable back and forth.

Of these, a tongue-shaped slanting protrusion 29 is formed on the right side of the front edge of the front plate 24 of the ceiling plate 27 so as to descend from the front to the rear by cutting and forming a part thereof on the lower surface thereof. An attachment piece 30 having a rectangular shape in plan view is integrally provided. An elongated hole 31 extending in the front-rear direction (insertion / removal direction of the disk cartridge D) is provided in the vicinity of the eject button attachment position of the front piece 24 so as to extend over a part of the attachment piece 30. Two longitudinal projections 32 for reinforcement, which also extend in the front-rear direction, are integrally provided in the longitudinal direction of the front-side opening.

Further, each side piece 26 of the ceiling plate 27 is provided with an elongated hole 33 extending in the front-rear direction so as to extend over a part of the front piece 24. A spring locking hole 34 that opens in the vertical direction is provided in the. A slider pressing piece 35 and an arm lock piece 36 are integrally formed at the rear end edge of each of the side pieces 26 by bending downward.

On the other hand, on each side plate 28 of the slide plate 23,
Two cam grooves 37, 38 are formed, which are horizontal grooves 37a, 38a extending in the front-rear direction and inclined grooves 37b, 38b communicating with the respective horizontal grooves 37a, 38a and having a slope descending from the front to the rear. There is. Each of these side plates 28
A slide pin 39 facing the inside of the second guide groove 8 (horizontal groove 8a) is provided on the.

Reference numeral 40 denotes an eject button for ejecting a cartridge, which is integrally formed on both sides of a rear end edge of the operation piece 41, which has a width dimension expanding from the front side to the rear side and has a substantially trapezoidal shape in plan view. Two guides 42 having a front end 42a that abuts on the front end face of the ceiling plate 27 when the eject button is mounted, and a pair of guides 42 and the operation piece 41 that are integrally formed with the lower surface of the mounting piece 30. A first holding piece 43 which is in contact with the first holding piece 43; and a second holding piece 44 which is provided above the first holding piece 43 and is integrally formed with the rear end edge of the operation piece 41 and which contacts the upper surface of the mounting piece 30. It is detachably attached to the ceiling plate 27 of the slide plate 23.

Both holding pieces 43, 4 of the eject button 40
Of the four, the first holding piece 43 is formed by an elastically deformable holding piece having a through window 45 having a rectangular shape in plan view in which the inclined protrusion 29 faces the inside and a notch recess 46 for positioning, and A contactor 47 is provided at the center of the end edge so that a stopper, which will be described later, can come into contact with the stopper within the stroke in which the slide pin 39 moves along the horizontal groove 8a.

Reference numeral 48 denotes a cartridge holder which holds both side edges of the disk cartridge D so that the disk cartridge D can be inserted and removed freely. And a holder main body 49 having a substantially U-shaped cross-section and having a guide hole 49b that is arcuate in a plan view, and a slanted portion for bending the cartridge insertion guide formed by bending the lower end edges of both sides of the holder main body 49. The slide plate 2 is composed of a cartridge mounting piece 50 having a tip portion 50a.
It is provided between 3 and the chassis 1 so as to be able to move up and down.

Of these, on both side ends of the holder main body 49, there are provided a first holder pin 51 and a second holder pin 52 facing the first guide groove 7 and the cam grooves 37, 38, respectively. Two left and right spring locking pieces 53 corresponding to the spring locking holes 34 are provided on both side edges.
Is cut and raised.

On the right side of the front end edge of the holder main body 49, a substantially trapezoidal shape in side view is inserted into the elongated hole 31 in the disc unloading state to regulate the movement of the slide plate 23 in the disc cartridge D insertion direction. Stopper 54 is integrally provided.

Further, in the holder main body 49, there are spring locking pieces 55 for returning the slider, which are respectively located near the left spring locking pieces of the two spring locking pieces 53 and on the left edge of the opening window 49a. A guide piece 56 for guiding the cam plate is formed by cutting and raising, and the opening window 49a and the guide hole 4 are provided on the right side of the guide piece 56.
A spring mounting piece 57 and a spring locking piece 58, which are located between 9b and 9b, are formed by cutting and raising.

Further, two arm holding pieces 59, which are opposed to each other at a predetermined interval, are formed on the holder main body 49 by bending, and the arm holding pieces 5 are formed.
An escape hole 60 that opens in the vertical direction is provided on the left side of 9.

In addition, two slider guides 61, which are located at the rear of the spring locking piece 55 and are opposed to each other at a predetermined interval in the front-rear direction, are formed in the holder body 49 by bending.

Reference numeral 62 is a tension coil spring that biases the slide plate 23 forward, and both ends thereof are locked to the spring locking hole 34 and the spring locking piece 53.

Reference numeral 63 is a load slider having a slider operation piece 64 with which the slider pressing piece 35 abuts, on the left side edge of the rear end thereof, and the cartridge holder 48.
The holder main body 49 is held so as to be movable back and forth, and long holes 65 extending in the front-rear direction and through which the slider guides 61 are inserted are provided at both ends in the longitudinal direction.

A spring locking piece 66 corresponding to the spring locking piece 55 is bent and formed at the front end edge of the road slider 63, and has a tooth portion 67a extending in the front-rear direction at the rear end edge. A rack plate 67 is attached.

On the right side edge of the road slider 63, a cam plate 68 having an inclined surface 68a having a slope rising from the front to the rear and a horizontal surface 68b extending in the front-rear direction is attached.

Reference numeral 69 is a tension coil spring for urging the load slider 63 forward, and both ends thereof are locked to the spring locking piece 66 and the spring locking piece 55.

Reference numeral 70 is a load arm for holding the head arm with which the arm swinging restrictor 22 abuts. The load arm 70 is rotatably supported by the arm holding pieces 59 via support pins 71, and a leaf spring 72 is provided. The arm tip is urged to rotate so as to face the inside of the opening window 49a.

On the edge of the load arm 70 on the side opposite to the leaf spring urging side, there is integrally provided a cam receiving portion piece 73 on which the inclined surface 68a of the cam plate 68 and the horizontal surface 68b come into contact with each other depending on the advance / retreat position of the slide plate 23. Has been.

Reference numeral 74 denotes a trigger arm which also serves as a shutter opening / closing arm, and includes a first arm 75 having a first engaging surface 75a and a second engaging surface 75b corresponding to the arm lock piece 36 and having a substantially fan-shaped plan view. From the second arm 76, which is integrally formed with the first arm 75 and has a shutter pressing piece 76a facing the inside of the guide hole 49b and a spring locking piece 76b corresponding to the spring locking piece 58, and which has a substantially rectangular shape in plan view. In other words, it is rotatably held by the holder body 49 via a support shaft 77.

Reference numeral 78 is a torsion spring that urges the trigger arm 74 to rotate in the direction of closing the shutter d of the disk cartridge D. The winding portion is attached to the spring attachment piece 57, and both ends thereof are the springs. It is locked to the locking pieces 58 and 76b.

Reference numeral 79 denotes a rotary damper device having a pinion 80 which meshes with the tooth portion 67a of the rack plate 67.
It is attached to the rear end of the left side plate 4 of the side plates 4 and 5 of the chassis 1.

Reference numerals 81 to 83 respectively denote a first switch for detecting whether or not a disc (not shown) is writable, a second switch for detecting the presence / absence of a disc cartridge D, and a third switch for disc type (2DD, 2HD, 2FD). The switch is connected to the circuit board 83 on the chassis 1 via a flexible board (not shown).

The symbols a ₁ and a ₂ in the figure respectively indicate the inserting direction and the extracting direction of the disc cartridge D. Reference numerals b ₁ , b ₂ and c ₁ , c ₂ respectively indicate the rotating direction of the trigger arm 74 and the ascending / descending direction of the cartridge holder 48.

[0047] a ₁ disc loading in the thus constructed disk loading apparatus, the disc cartridge D in the cartridge holder 48 in Figure 1
Insert it in the direction shown by.

At this time, the trigger arm 74 rotates in the direction in which the shutter d (disc cartridge D) is opened against the elastic force of the torsion spring 78, that is, in the direction indicated by b ₁ in the figure, and the arm is locked. The piece 36 releases the engagement state with the first engagement surface 75a to release the second engagement surface 75a.
Since it engages with b, the slide plate 23 advances in the direction indicated by a ₂ in the figure by the elastic force of the tension coil spring 62. Further, the first holder pin 51 and the second holder pin 52 are arranged in the first guide groove 7 and the cam grooves 37, 38 as shown in FIG.
And, the cartridge holder 48 moves in the same direction because it moves downward as indicated by c ₂ in FIG. 4 (A).

On the other hand, the disc unloading is performed by pressing the eject button 40 in the inserting direction of the disc cartridge D, that is, in the direction indicated by a ₁ in FIG.

At this time, the slide plate 23 is retracted in the direction indicated by a ₁ in the figure against the elastic force of the tension coil spring 62, and the arm lock piece 36 is moved by the second engaging surface 75.
In order to release the engagement state with b and engage with the first engagement surface 75a, the trigger arm 74 has the torsion spring 78.
By the elastic repulsive force of (3), the shutter d (disc cartridge D) is rotated in the direction indicated by b ₂ in the figure, and the disc cartridge D is moved in the direction indicated by a ₂ in the figure. Also, the first holder pin 5
Since the first and second holder pins 52 move upward in the first guide groove 7 and the cam grooves 37, 38 as indicated by c ₁ in FIGS. 1 and 4 (B), the cartridge holder 48 moves in the same direction.

When the eject button 40 is further pressed in the inserting direction of the disk cartridge D, the contact 47 contacts the stopper 54 before the slide pin 36 faces the vertical groove 8b of the second guide groove 8.

Therefore, in the present embodiment, when the eject button 40 is attached to the eject button attaching position of the slide plate 23, the slide pin 36 becomes the second guide groove 8 as shown by the chain double-dashed line in FIG. 4B. Since it does not face the vertical groove 8b, it is possible to prevent the slide plate 23 from coming off the chassis 1.

In the present embodiment, the slide plate 23
By integrally forming the stopper 54 on the cartridge holder 48 as the stopper mechanism, the number of parts can be reduced.

Next, attachment / detachment of the slide plate 23 to / from the chassis 1 in this embodiment will be described with reference to FIGS.

That is, to mount the slide plate 23 on the chassis 1, the slide pin 39 is inserted into the vertical groove 8b of the second guide groove 8 from above the chassis and the horizontal groove 8 is inserted.
After moving to the inside of a, both holding pieces 4 of the eject button 40
This is done by allowing the mounting piece 30 to face between 3 and 44. At this time, the inclined protrusions 29 are attached to the first holding piece 43 and the second holding piece 4.
4, a pressing force for elastically deforming in the direction of separating from 4 is applied to face the through window 45 and the notch recess 46.

On the other hand, in order to detach the slide plate 23 from the chassis 1, after removing the eject button 40 from the mounting piece 30, the slide plate 23 is pressed in the inserting direction a ₁ of the disc cartridge D to move the slide pin 39 to the first position. 2 The guide groove 8 is moved from the horizontal groove 8a to the vertical groove 8b and then pulled out above the chassis.

In this way, the slide plate 23 can be attached to and detached from the chassis 1.

In this embodiment, the example applied to the floppy disk device is shown, but the present invention is not limited to this, and various disks can be recorded and recorded.
The present invention can be applied to other disk devices for reproduction as in the embodiment.

The shape of the stopper in the present invention is
Of course, the present invention is not limited to the above-mentioned embodiment, and can be appropriately changed to other shapes.

[0060]

As described above, according to the present invention, the cartridge holder is integrally provided with the stopper for restricting the movement of the slide plate in the insertion direction of the disk cartridge, and the stopper has a stroke in which the pin moves along the horizontal groove. The eject button, which has a contact that can be abutted inside, is removably attached to the slide plate.When the eject button is pressed in the insertion direction of the disc cartridge, the contact hits the stopper before the pin comes into the vertical groove. Contact.

Therefore, when the eject button is mounted at the eject button mounting position of the slide plate, the pin does not face the vertical groove of the guide groove, so that it is possible to prevent the slide plate from coming off the chassis, and The work can be simplified.

Further, since the stopper is integrally formed with the cartridge holder as the stopper mechanism of the slide plate, the number of parts can be reduced, and hence the cost can be reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a disc loading device according to the present invention.

2A to 2C are a plan view, a side view, and a front view showing a state in which an eject button is removed from a slide plate of the disc loading device according to the present invention.

3A to 3C are a plan view, a side view, and a front view showing a state in which an eject button is attached to a slide plate of a disc loading device according to the present invention.

4A and 4B are side views showing a disc loading state and a disc unloading state of the disc loading device according to the present invention.

[Explanation of symbols]

1 ... Chassis 8 ... Second guide groove 8a ... Horizontal groove 8b ... Vertical groove 23 ... Slide plate 28 ... Side plate 39 ... Slide pin 40 ... Eject button 47 ... Contact 48 ... Cartridge holder 54 ... Stopper D ... Disk cartridge

Claims (2)

(57) [Claims] 1. A chassis having a guide groove formed by a horizontal groove for moving a pin extending in the inserting / removing direction of a disk cartridge and a vertical groove for attaching / detaching the pin communicating with the horizontal groove, and a chassis provided on the chassis so as to be movable back and forth. A slide plate having a pin that faces the guide groove, and a cartridge holder that is vertically movable between the slide plate and the chassis and into which a disc cartridge can be inserted / removed.
The cartridge holder is integrally provided with a stopper for restricting movement of the slide plate in the disc cartridge insertion direction, and an eject button having a contactor capable of abutting on the stopper within a stroke in which the pin moves along the horizontal groove. A disc loading device, wherein the disc is detachably attached to the slide plate. 2. The slot according to claim 1, wherein an elongated hole extending in the direction of inserting and removing the disc cartridge is provided in the vicinity of the eject button mounting position of the slide plate, and the stopper is exposed in the elongated hole in the disc unloading state. A disk loading device characterized in that