JPH1064152A - Shutter opening and closing mechanism - Google Patents

Abstract

(57) Abstract: To smoothly open and close a shutter (104) attached to a front surface of a cartridge (100) so as to be rotatable in a vertical direction. SOLUTION: A slide plate 12 which is moved along a guide groove 13 by an insertion / ejection operation of a cartridge 100.
And the shutter 104 is erected on the slide plate 12, engages with the shutter 104, and moves along with the movement of the slide plate 12.
Shutter opening / closing pin 15 which is opened and closed by rotating
And a return spring 16 for returning the slide plate 12 to the initial position, to constitute the shutter opening / closing mechanism 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for opening and closing a shutter mounted on a front surface of a cartridge.

[0002]

2. Description of the Related Art Conventionally, a cartridge accommodating a recording disk has an opening on the lower surface side into which a head or the like enters. It is generally mounted so as to slide.

A shutter opening / closing mechanism provided on a disk drive device side for opening / closing a shutter of such a cartridge has a shutter opening / closing projection provided at a fixed position in a cartridge insertion portion. Part of the shutter is engaged with the projection and held,
In this state, the shutter is opened and closed by moving the cartridge with respect to the shutter.

[0004]

Recently, as a hard disk drive, a so-called removable hard disk drive has been proposed in which a hard disk is housed in a cartridge and is detachable.

The cartridge used in the removable hard disk drive has an opening at the front side for receiving a head or the like, and a shutter for covering the opening at the front is mounted so as to rotate vertically. There is.

In this case, a conventional shutter opening / closing mechanism as described above cannot be used, and a shutter opening / closing mechanism having a new structure is required.

[0007] The present invention has been made in view of such a point,
It is an object of the present invention to provide a shutter opening / closing mechanism having a novel structure for opening and closing a shutter mounted on a front surface of a cartridge to be vertically rotatable.

[0008]

According to the present invention, there is provided a mechanism for opening and closing a shutter rotatably mounted in a vertical direction on a front surface of a cartridge. A slide plate which is moved along the guide groove by the slide plate, a shutter opening / closing pin which is erected on the slide plate, engages with the shutter, and pivots the shutter up and down with the movement of the slide plate to open and close; A return spring for returning the plate to the initial position.

According to the shutter opening / closing mechanism of the present invention, the shutter can be smoothly opened / closed in accordance with the insertion / ejection operation of the cartridge, and since the shutter opening / closing mechanism is structurally simple, it can be implemented at low cost and low cost. It is possible.

[0010]

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

First, the configuration of a cartridge containing a hard disk will be described with reference to FIG.

In the drawing, reference numeral 100 denotes a cartridge;
A hard disk (magnetic recording disk) 101 is rotatably housed inside the cartridge 100. A metal hub 102 is attached to the center of the hard disk 101, and the metal hub 102 is exposed to the outside from a center hole (not shown) formed on the lower surface of the cartridge 100.

A front opening 103 is provided on the front side of the cartridge 100 as shown in FIG. 1B, and the hard disk 101 is inserted through the front opening 103 as described later.
A magnetic head or the like for writing / reading a signal to / from the recording surface is inserted into the cartridge 100.

On the front surface of the cartridge 100, a shutter (lid) 104 for covering the front opening 103 is attached. The shutter 104 is attached to the shaft 105 of the cartridge 100 so as to be vertically rotatable on both left and right side plate portions. When the cartridge is not used, that is, when the cartridge is stored, as shown in FIG.
Is closed and the front opening is completely covered,
When the cartridge 100 is inserted into the hard disk drive, the shutter 104 is rotated upward and opened by the shutter opening / closing mechanism on the apparatus as shown in FIG. 1B, and the front opening 103 is exposed.

An engagement recess 10 is provided at one end of the shutter 104.
6 are provided, and as will be described later,
When the pin of the shutter opening / closing mechanism is engaged with the shutter 6, the shutter 104 is opened / closed.

In this cartridge 100,
A shutter lock mechanism for holding the shutter 104 in a closed state is provided. That is, the shutter lock member 107 is provided at the front of the cartridge 100.
When the shutter 104 is closed, the shutter lock member 107 engages with the engagement concave hole 106 of the shutter 104 to lock the shutter 104 so as not to be easily opened. . To release this lock, the shutter lock member 107 may be pushed in and removed from the engagement recess 106.

Next, the structure of the removable hard disk drive into which the cartridge 100 as described above is inserted will be described with reference to FIG.

In FIG. 1, reference numeral 1 denotes a hard disk drive as a whole, and reference numeral 2 denotes its chassis. A front panel 3 is attached to a front portion of the chassis 2, and a cartridge 100 is inserted into the hard disk drive 1 from an insertion port 4 formed in the front panel 3 and mounted on the cartridge mounting section 5.

In the cartridge mounting portion 5, an upper surface plate 6 is fixed to the chassis 2 so as to cover a part of the upper surface, and leaf spring members 7 provided on the left and right of the upper surface plate 6 are provided.
As a result, the cartridge 100 mounted on the cartridge mounting portion 5 is pressed so as not to rattle.

At the center of the cartridge mounting section 5, a turntable 8 for rotating the hard disk 101 is provided. The turntable 8 is attached to a spindle shaft of a drive motor (not shown). When the cartridge 100 is not inserted, the turntable 8 is pulled downward so as not to hinder the insertion of the cartridge 100. When the cartridge 100 is inserted and mounted in the cartridge mounting section 5, the turntable 8 rises integrally with the drive motor, enters the center hole on the lower surface side of the cartridge 100, and chucks the hard disk 101.

The turntable 8 is provided with a chucking magnet, and the metal hub 102 at the center of the hard disk 101 is magnetically attracted to the chucking magnet so that the hard disk 101 is chucked. Is brought into a state of being rotated integrally with the turntable 8 by the drive of the drive motor.

When the cartridge 100 is inserted, the positioning pins 9 on the left and right together with the turntable 8 are raised to position the positioning holes 10 on the lower surface of the cartridge 100.
8, whereby the cartridge 100 is securely positioned and fixed in the cartridge mounting portion 5.

The cartridge 1 is mounted on one side of the cartridge mounting section 5 on which the cartridge 100 is mounted.
A shutter opening / closing mechanism 10 for opening / closing the shutter 104 is provided.

The shutter opening / closing mechanism 10 includes an engagement recess 106 provided in the shutter 104 of the cartridge 100.
(In this example, on the right side), and the configuration is as follows.

That is, on the right side of the cartridge mounting portion 5, a side plate 11 which is continuous with the upper surface plate 6 is provided upright, and a slide plate 12 is provided on an outer surface of the side plate 11 with a direction of insertion / ejection of the cartridge 100. It is mounted so as to be movable in the front-back direction corresponding to.

The slide plate 12 is supported by the support shaft 1 so as to be moved along a guide slot 13 formed in the side plate 11.
4. And this slide plate 1
2, a shutter opening / closing pin 15 that penetrates through the guide slot 13 and protrudes into the side plate 11 is provided upright. When the cartridge 100 is inserted as described later in detail, the shutter opening / closing pin 15 is turned on. The shutter 104 has a structure in which the shutter 104 is opened and closed by being engaged with the engagement concave hole 106 of the shutter 104.

A protruding piece 12 protruding from the slide plate 12
A return spring 16 formed by a tension coil spring is stretched between the first spring member a and the projecting piece 11a projecting from the front portion of the side plate 11, and the slide plate 12 is always moved by the return force of the return spring 16. It is biased to return to the initial position, that is, the foremost position.

Guide slot 13 for guiding slide plate 12
As is apparent from FIG. 7, a front lower end portion 13a formed horizontally at a height position corresponding to the position of the engagement concave hole 106 when the shutter 104 is closed, and the lower end portion 13a
This guide has an inclined portion 13b formed so as to be inclined high toward the rear continuously to the rear, and a second half high step portion 13c formed horizontally and continuously to the inclined portion 13b. When the shutter opening / closing pin 15 moves along the slot 13, the opening / closing operation of the shutter 104 is performed.

The details of the opening / closing operation of the shutter 104 will be described with reference to FIGS. 7 to 9. First, in the initial state, the slide plate 12 is at the foremost position by the return force of the return spring 16 as shown in FIG. In this state, the shutter opening / closing pin 15 is located at the forefront end of the low step portion 13a of the guide slot 13.

When the cartridge 100 is inserted in this state, the shutter opening / closing pin 15 is inserted into the engagement recess 106 of the shutter 104 of the cartridge 100 as shown in the figure. At this time, the shutter lock member 107 shown in FIG. 1 is pushed by the shutter opening / closing pin 15 inserted into the engagement recess 106, and the lock of the shutter 104 is released.

When the cartridge 100 is further inserted from this state, the slide plate 12 moves rearward along the guide slot 13 integrally with the cartridge 100 against the force of the return spring 16 as shown in FIG. At this time, the shutter opening / closing pin 15 is guided by the inclined portion 13b of the guide slot 13 and moved high, whereby the shutter 104 engaged with the shutter opening / closing pin 15 is rotated upward, that is, in the opening direction. Will be.

When the cartridge 100 is completely inserted, the shutter opening / closing pin 15 is moved to the high step portion 13c of the guide slot 13 as shown in FIG. Become.

When the cartridge 100 is ejected from this state, the slide plate 12 returns to the front integrally with the cartridge 100 by the return force of the return spring 16, that is, the shutter 104 is moved by the operation reverse to the above operation. Is rotated downward and closed.

When the cartridge 100 is ejected, the return force of the return spring 16 acts as a force for pushing out the cartridge 100.
Will be discharged smoothly.

Next, the overall configuration of the hard disk drive will be described with reference to FIGS.
Behind the cartridge mounting portion 5 on the chassis 2, there is provided a rotating arm 18 to which a magnetic head for writing / reading signals to / from a recording surface of the hard disk 101 is mounted.

A pair of upper and lower suspensions 20 made of a leaf spring material are fixed to the tip of a rotating arm body 19 which is rotatably supported on the chassis 2 about a support shaft 17. As is apparent from FIG. 5, a magnetic head 21 is attached to the inside of the distal ends of the upper and lower suspensions 20 so as to face each other. Here, the upper magnetic head 21 (a) is used for writing / reading a signal to / from the recording surface on the upper surface side of the hard disk 101, and the lower magnetic head 21 (b) is used for writing / reading a signal to the recording surface on the lower surface side of the hard disk 101. / Used for reading. The upper magnetic head 21 (a) and the lower magnetic head 21 (b) are biased toward each other by the spring force of the suspension 20.

Further, in the rotary arm 18, an auxiliary plate 22 is fixed to the outer surfaces of the upper and lower suspensions 20, and a projection 23 protruding from the tip of the auxiliary plate 22 is provided on a ramp 27 to be described later. It comes into contact and is supported.

An actuator 24 for rotating the rotating arm 18 includes a driving coil 25 attached to the other end of the rotating arm body 19 and a magnet 26 fixed to the chassis 2 corresponding to the driving coil 25. Is composed of
When the drive current is supplied to the drive coil 25, the rotation arm 18 rotates around the support shaft 17, and the magnetic head 21 is moved in the radial direction of the hard disk.

Further, a lamp 27 for smoothly moving the magnetic head 21 of the rotating arm 18 toward and away from the recording surface of the hard disk 101 is provided behind the cartridge mounting portion 5 on the chassis 2.

As shown in FIG. 5, the lamp arm 27a of the lamp 27 has
The upper magnetic head 21 (a) and the lower magnetic head 21 (b) are kept separated from each other by a predetermined distance.

As shown in FIG. 6, the distal end of the lamp arm 27a is formed in a fork shape which is bifurcated up and down, and the upper and lower surfaces of the distal end of the fork are tapered. I have.

The ramp 27 is moved by an operating mechanism (not shown) in conjunction with the insertion / ejection operation of the cartridge 100.

The characteristic feature of this lamp 27 is that
Are aligned with the center of rotation of the rotating arm 18. That is, in the apparatus of this embodiment, as shown in FIG. 3, a turning plate 28 is rotatably supported on a support shaft 17 which is the center of rotation of the turning arm 18 as a fulcrum. Are connected and fixed. And this rotating plate 28
Is rotated by the operation mechanism in conjunction with the insertion / ejection operation of the cartridge 100, so that the lamp 27 is moved so as to rotate about the support shaft 17. The turning plate 28 is provided on the back side of the chassis 2. The turning plate 28 and the lamp 27 are connected to the connecting shaft 3 that passes through long holes 29 and 30 formed in the chassis 2.
1 and 32 are connected and fixed.

As described above, the lamp arm 27a corresponds to the structure in which the rotation fulcrum of the lamp 27 coincides with the rotation center of the rotation arm 18 and the support shaft which is the rotation center of the rotation arm 18. 17 is formed in an arc shape.

The operation of the lamp 27 will be described. When the cartridge 100 is not inserted,
As shown in FIG. 3, the lamp 27 is at a position where it has been moved backward. In this state, the projection 23 at the tip of the rotating arm 18 is supported by the ramp arm 27a,
For this reason, as shown in FIG. 5, the upper and lower magnetic heads 21 are separated at a predetermined interval.

Then, as shown in FIG.
Is inserted, the front opening 10 of the cartridge 100 is opened.
3, the magnetic head 21 and the lamp arm 27a enter the cartridge 100. In this state, the ramp 27 is moved forward, that is, in the direction in contact with the hard disk 101, and as shown in FIG.
Is crossed with the hard disk 101 such that the fork-shaped tip of the hard disk 101 sandwiches the hard disk 101.

In this state, when the turning arm 18 is turned toward the front, that is, toward the center of the hard disk 101, the projection 23 at the tip moves along the ramp arm 27a, and the projection 23 is eventually moved to the ramp arm 27a. When the magnetic head 21 comes down from the ramp arm 27 a by sliding on the inclined surface of the tip portion, the magnetic head 21 comes into contact with the recording surface of the hard disk 101 by the spring force of the suspension 20.

When the hard disk 101 is rotationally driven by the drive motor, the magnetic head 21 flies by several tens of nm from the recording surface of the hard disk 101 due to an aerodynamic effect, and signal writing / reading is performed in that state. .

When the signal writing / reading operation is stopped from this state, the rotating arm 18 is rotated backward, that is, in a direction away from the center of the hard disk 101, and the projection 23 at the distal end rides on the ramp arm 27a. As a result, the magnetic head 21
01 so that it can be lifted from the recording surface. When the cartridge 100 is ejected, the lamp 27 is simultaneously moved to return to the rear position shown in FIG.

In the above operation, the apparatus of this embodiment has a structure in which the fulcrum of movement of the lamp 27 coincides with the center of rotation of the rotating arm 18 as described above.
Does not deviate from the movement locus of the projection 23 at the tip of the rotating arm 18. Therefore, there is no possibility that the projection 23 at the tip of the rotating arm 18 will fall off the lamp arm 23a of the lamp 23, and a stable operation will be performed.

Although the embodiment of the present invention has been described above, it is needless to say that the present invention is not limited to this embodiment and can adopt various other embodiments.

[0052]

According to the shutter opening / closing mechanism of the present invention as described in the above embodiments, the shutter can be smoothly opened and closed by vertically turning the shutter in accordance with the insertion / ejection operation of the cartridge. Can be. Since the shutter opening / closing mechanism is structurally simple and includes a small number of components, it can be implemented at low cost and low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cartridge containing a hard disk, in which (A) shows a state in which a shutter is closed, and (B) shows a state in which the shutter is open.

FIG. 2 is a perspective view of a removable hard disk drive.

FIG. 3 is a plan view of the same.

FIG. 4 is a plan view of the same, with a cartridge inserted.

FIG. 5 is a side view of a main part of the rotating arm.

FIG. 6 is an explanatory diagram of a shape of a tip portion of a lamp arm.

FIG. 7 is a side view of a shutter opening / closing mechanism.

FIG. 8 shows a state in which the shutter is being opened.

FIG. 9 shows a state in which the shutter is completely opened.

[Explanation of symbols]

10 ‥‥ shutter opening / closing mechanism, 11 ‥‥ side plate, 12 ‥‥ slide plate, 13 ‥‥ guide slot, 15 ‥‥ shutter opening and closing pin, 16 ‥‥ return spring, 100 ‥‥ cartridge, 104 ‥‥ shutter, 106 Concave hole

Claims (2)

[Claims] 1. A mechanism for opening and closing a shutter mounted on a front surface of a cartridge so as to be vertically rotatable, the slide plate being moved along a guide groove by the cartridge insertion / ejection operation; A shutter opening / closing pin which is erected on the slide plate, engages with the shutter, rotates the shutter up and down with the movement of the slide plate to open and close, and a return spring for returning the slide plate to an initial position. And a shutter opening / closing mechanism comprising: 2. The shutter opening / closing mechanism according to claim 1, wherein when the cartridge is ejected, the force of the return spring acts as a force for pushing the cartridge.