JPH073487Y2 - Magnetic disk cartridge loading / unloading mechanism - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic disk cartridge loading / unloading mechanism, and more particularly to a magnetic disk cartridge loading / unloading mechanism for a magnetic disk device having a shutter.

[0002]

2. Description of the Related Art Generally, a magnetic disk cartridge is
It is horizontally inserted into the holder through the cartridge insertion opening on the front panel, and lowered together with the holder to be mounted on the magnetic disk device. At the time of detachment, the holder rises together with the cartridge and the cartridge is ejected to the insertion port.

The magnetic disk device is provided with a shutter opening / closing mechanism, and the shutter of the cartridge is opened by the shutter opening mechanism in the process of inserting the cartridge into the holder. The shutter opening mechanism also has a function of ejecting (pushing) the cartridge out of the holder. However, in the conventional mechanism, the cartridge is inserted to the final position in the holder and the shutter is opened, the cartridge is mounted, and even when the holder is lifted at the initial stage of disengagement. It is configured to exert a force in the direction of pushing it out.

[0004]

For this reason, in the process of mounting, it is necessary to hold the rear end of the cartridge with a fingertip so that the cartridge is not pushed out of the holder. There is a problem that it may be pushed out and may not be normally attached.

Further, pushing the cartridge in the ejecting direction in the mounted state is not preferable from the viewpoint of mounting position accuracy and the like.

Further, the cartridge has its rear end locked to the back surface of the front panel of the magnetic disk device, and its movement in the ejection direction is restricted.

As described above, even in the process of raising the holder in the initial stage of disengagement, a force is exerted on the cartridge in the direction of pushing it out of the holder, and when the cartridge rises to the position of the cartridge insertion opening on the front panel, ejection starts. To be done. Therefore, the height position when the magnetic disk cartridge is ejected is determined by the position of the insertion opening of the front panel. The mounting position of the front panel varies slightly from device to device.If the front panel is mounted low, the magnetic disk cartridge is ejected before the magnetic head completely slips out of the cartridge opening. Therefore, there is a problem that the closing shutter may collide with the magnetic head or rub the head surface of the magnetic head, resulting in an accident that damages the magnetic head.

An object of the present invention is to provide a magnetic disk cartridge loading / unloading mechanism that solves the above problems.

[0009]

A magnetic disk cartridge having a notch in a front edge and a shutter for closing a magnetic head insertion opening window of the cartridge main body is inserted into a cartridge main body containing a magnetic disk, Holder (8) for holding the inserted magnetic disk cartridge
By the pressing operation of the eject button at the time of disengagement, the magnetic disk cartridge is moved in the same direction as the insertion of the magnetic disk cartridge in the plane parallel to the surface of the magnetic disk cartridge in the holder, and the magnetic disk cartridge is moved from the magnetic head. A slider (10) for moving the holder together with the magnetic disk cartridge in a direction orthogonal to the surface of the magnetic disk cartridge so as to be separated is rotatably provided. When the slider is moved, the holder is moved by the magnetic head. A lever (20) for locking the slider that has been rotated and moved so as not to return when the slider is moved out of the opening window until a gap is formed between the magnetic head and the shutter; It is rotatably mounted on the holder and biases the magnetic disk cartridge in the direction to push it out of the holder. And levers, tare provided on the lever
Ri, becomes more and pin movable trajectory is a circular arc, the magnetic disk cartridge is the lever is pivoted in the course of being inserted into the holder the pin opens it by pressing the shutter, said pin, the cartridge Of the side surfaces that engage with the notch at the front edge of the main body and form the notch, the pin
Is located on the rotation fulcrum side of the lever and the magnetic disk.
Side that extends in the same direction as the cartridge insertion direction
Abut the surface to limit the rotation of the biased lever.
And a shutter opening mechanism (11) for opening the shutter in a state in which the ejecting force is not applied to the magnetic disk cartridge.
And an initial stage of pushing back the magnetic disk cartridge to a state where the engagement between the notch and the pin is released by the rotation of the locking lever when locking the slider. Push back mechanism (10
b, 20b).

[0010]

The structure in which a part of the locking lever that locks the slider constitutes the initial push-back mechanism functions to simplify the structure.

In the construction in which the locking lever is rotated when the magnetic head is pulled out from the opening window and a gap is formed between the magnetic head and the shutter, the shutter moves to the magnetic head when the shutter is closed. It acts so as not to collide.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an enlarged view showing a mounted state of a main part of an embodiment of a magnetic disk cartridge loading / unloading mechanism according to the present invention. FIG. 2 shows the force applied to the magnetic disk cartridge of the shutter opening mechanism in the state shown in FIG. 3 and 4 show the initial state of disengagement, FIG. 3 shows the state when the push-back mechanism operates, and FIG. 4 shows the state where the shutter opening mechanism returns to the original state.

As shown in FIGS. 5 and 6, the magnetic disk cartridge 1 includes a magnetic disk 2, a flat cartridge body 3 accommodating the magnetic disk 2, and a front surface in the insertion direction, which slides in the directions of arrows X ₁ and X _2. The shutter 4 is movably provided. Opening windows 5 and 6 are formed on the upper and lower surfaces of the cartridge body 3. Normally, the shutter 4 is at the position moved by the spring 7 in the arrow X ₂ direction, and the opening windows 5 and 6 are closed. When the shutter 4 moves in the direction of arrow X ₁ ,
The opening windows 5 and 6 are opened, and the shutter is opened.

Next, the mounting / dismounting operation of the cartridge 1 to / from the magnetic disk device will be briefly described.

Before mounting the cartridge, the magnetic disk device is in the state shown in FIGS. 7 and 8. Holder 8
Is in the raised position H ₁ , the slider 10 constituting the holder moving mechanism is moving in the direction of the arrow Y ₁ on the chassis 9, and the shutter lever 11 constituting the shutter opening mechanism is rotating counterclockwise. . The shutter lever 11 is supported by a pin 12 on the holder 8 and is biased counterclockwise by a spring 13 (see FIG. 1).

The cartridge 1 has an arrow Y ₁ through the insertion opening 14a of the front panel 14 with the shutter 4 facing forward.
Direction, then inserted into the holder 8 and held there.

In the process of inserting the cartridge 1 beyond the position shown in FIG. 4, the lever 11 is pushed by the cartridge 1 to rotate clockwise. When the lever 11 rotates, the pin 15 at the tip pushes the shutter 4, the shutter 4 moves in the direction of the arrow X ₁ , the opening windows 5 and 6 open, and the shutter is opened.

[0018] In this state, the position H ₂ holder 8 is lowered in the arrow Z ₂ direction together with the cartridge 1 as shown in FIG. 9
The cartridge 1 is mounted as shown in FIGS. 9 to 12. The magnetic disk 2 is mounted on the turntable 16, the lower magnetic head 17 contacts the lower surface of the magnetic disk 2, the head arm 18 rotates, and the upper magnetic head 19 contacts the upper surface of the magnetic disk 2. The magnetic disk 2 rotates, and the magnetic heads 17 and 19 move to the arrows Y ₁ and Y.
Recording and reproduction are performed by moving in _two directions.

A head carriage 40 is composed of a carriage body 41 and a head arm 18 rotatably supported by the carriage body 41. The lower magnetic head 17 is attached to the carriage body 41, and the upper magnetic head 19 is attached to the head arm 18. Further, the head arm 18 is provided with abutting portions 18a that project to both sides.

The arm portion 8a extending from the holder 8 has an abutting portion 1a.
It is located below 8a.

Further, in FIG. 4, the lever 20 constituting the initial push-back mechanism is supported by the pin 21 on the chassis 9. At the final stage of inserting the cartridge 1 into the holder 8, the tip of the cartridge 1 pushes the first upright bent piece 20a of the lever 20, and the lever 20 rotates clockwise against the spring 22, The second upright bent piece 20b has the opening recess 10
When the slider 10 comes out of the position a and the spring 23 causes the arrow Y
Slide in ₂ directions.

When removing the cartridge 1, the eject button 24 is pressed. By this operation, the slider 10 slides in the arrow Y ₁ direction, the holder 8 rises in the arrow Z ₁ direction, and the cartridge 1 moves to the lever 20 and the shutter lever 1
It is pushed by 1 and discharged to the outside of the holder 8. Next, a main part of the present invention will be described with reference to FIGS. 1 to 6 and 13. First, the pin 15 will be described. Pin 15
The locus of movement of is around the pin 12 on the holder 8.
It is an arc of a circle. Pin 15 is X ₁
Side and the position on the Y ₂ side. Cartridge 1
When is inserted into the inner part of the holder 8, the pin 15 engages with the notch 30 at the front edge of the cartridge body 3, as shown in FIGS. The pin 15 is in contact with the side surface 30 a of the cutout 30 and is separated from the inner surface 30 b of the cutout 20. Here, the side surface 30a is more
Located on the pin 12 side, which is the center of rotation of the lever 11.
And in the same direction as the insertion direction of the cartridge 1
Has been extended to. In addition, the arrow X ₂ direction of the cartridge 1
Is restricted by the holder 8. Therefore,
The contact between the side 15a and the side surface 30a causes
The chatter lever 11 can be further rotated counterclockwise.
There is no state. That is, acting on the pin 15 by the spring 13
The acting force F is received by the side surface 30a. car
The force in the arrow X ₂ direction is applied to the ridge 1 as indicated by the force F _1.
Acts (this force is received by the holder 8)
However, even if the pin 15 is at the back of the notch 30,
Slope facing the side surface 30a of the surface 30b or the notch 30
Even if the pin 15 comes into contact with the inner surface 30b,
Or, it is only in contact with the slope 30c, and the inner surface
30b or slope 30c is not pushed, the cart
The force in the discharge direction indicated by the arrow Y ₂ acts on the ridge 1 at all.
I don't.

As a result, the cartridge 1 is held in the inner part of the holder 8 without being subjected to the ejection force, and the lever 1
In No. 1, the pin 15 is engaged with the notch 30 and presses the side surface 30a, and the pin 15 is provisionally locked at the above-described rotation position. The shutter 9 is in the open state. The shutter 9 pushes the pin 15 in the direction of the arrow X ₂ , and this pushing force also acts to hold the lever 11 in the above-described rotational position.

As described above, the cartridge 1 has the holder 8
When the shutter is inserted into the inner part of the cartridge 1 and the shutter is opened, the cartridge 1 is not pushed out of the holder 8 even if the fingertip is separated from the rear end of the cartridge 1, because the force for pushing the cartridge 1 out of the holder 8 does not act on the cartridge 1. The cartridge 1 is lowered together with the holder 8 and mounted in a predetermined position.
Therefore, it is not necessary to keep the fingertip on the rear end of the cartridge 1 until the holder 8 is lowered, and the mounting operation is easy.

Even in the mounted state, no force is exerted on the cartridge 1 in the ejection direction, and the cartridge 1 is mounted with high positional accuracy.

Further, even in the process of raising the holder 8 in the initial stage of the detaching operation, no force is exerted on the cartridge 1 in the ejection direction, and the cartridge 1 is not ejected immediately when it faces the insertion opening 14a. Next, the initial push-back mechanism that pushes back the cartridge 1 at the time of detachment will be described. In the cartridge mounted state shown in FIG. 12, the lever 20 has the second bent piece 20b locked to the opening side edge 10b of the slider 10 to restrict the counterclockwise rotation by the spring 22.

When the slider 10 slides in the direction of the arrow Y ₁ , the inclined groove 25 guides the pin 26 on the side of the holder 8 to raise the holder 8 in the direction of the arrow Z ₁ . In the process of raising the holder 8, the arm portion 8a contacts the contact portion 18a to rotate the head arm 18 upward, and the magnetic heads 17 and 19 separate from the magnetic disk 2 and slip out from the opening windows 5 and 6.
When the holder 8 has reached the position H ₁ , as shown in FIG.
Between the shutter 9 and the shutter 9 are formed gaps 27 and 29 having sufficient dimensions g ₁ and g ₂ , respectively.

When the slider 10 is moved enough to raise the holder 8 to the position H ₁ , the opening side edge 10b is retracted from the position facing the second bent piece 20b, and the lever 20 moves the spring 22.
This rotates counterclockwise, and the initial push-back mechanism operates.

As shown in FIG. 3, when the lever 20 is rotated, the first bent portion 20a pushes the cartridge 1 in the arrow Y ₂ direction, and the engagement between the notch 30 and the pin 15 of the cartridge 1 is released. Is pushed back to the state of

The pin 15 comes out of the notch 30 and the side surface 30
When reaching the end of “a”, the pin 15 is notched by the shutter 4
It is pushed out further and abuts on the front edge 31 of the cartridge body 3. When the pin 15 comes out of the notch 30, the temporary lock is released and the lever 11 rotates counterclockwise as shown in FIG. At this time, the pin 15 is in contact with the front edge 31, and a force in the arrow Y ₂ direction is applied to the cartridge 1 by the above rotation of the lever 11. This allows
The cartridge 1 is ejected from the holder 8 and the shutter 4 moves in the direction of arrow X ₂ to close the opening windows 5 and 6.
The movement of the shutter 4 in the closing direction assists the above rotation of the lever 11.

Further, by the above rotation of the lever 20, the third
The upright bent piece 20c moves to a position where the edge of the opening 11a of the lever 11 cannot be locked, and the lever 20 rotates to the position shown in FIG.

Here, the holder 8 and the slider 10 are engaged with each other, and the height position of the holder 8 and the sliding position of the slider 10 correspond accurately, and the height of the holder 8 when the shutter 4 is closed is high. The variation in the position H ₁ between the magnetic disk drive devices can be reduced.

For this reason, in each magnetic disk drive, the shutter 4 is closed in a state where a sufficient gap is secured between the shutter 4 and the magnetic heads 17 and 19, and the magnetic heads 17 and 19 associated with the shutter closing operation. Damage can be reliably prevented.

The pin 15 is not limited to the cylindrical shape,
The shape that can be fitted into the notch 30 may be, for example, a triangular prism shape, a trapezoidal prism shape, or a roller, and the “pin” described in the section of the utility model registration claim includes all of these.

[0035]

As described above, the magnetic disk cartridge loading / unloading mechanism according to the present invention has the following features.

1. Since the locking lever that locks the slider also serves as the initial push-back mechanism, a dedicated part for the initial push-back mechanism may be unnecessary and the structure may be simplified. 2. Since the shutter opening mechanism can put the magnetic disk cartridge in the opened state without applying the ejecting force to the magnetic disk cartridge, when the magnetic disk cartridge is inserted deep into the holder, the magnetic disk cartridge is held there. Become. Therefore, at the time of mounting, it is not necessary to press the rear end of the magnetic disk cartridge with the fingertip, and the mounting can be performed smoothly.

3. Even in the mounted state, the magnetic disk cartridge has no ejecting force, so that the magnetic disk cartridge can be mounted with high positional accuracy.

4. At the time of disengagement, the holder moves upward, for example, to form a gap between the shutter and the magnetic head, and then the initial push-back mechanism operates to push the magnetic disk cartridge back to the position where the temporary lock of the shutter opening mechanism is released. With this configuration, the shutter closes without hitting the magnetic head or rubbing the magnetic head, and it is possible to reliably prevent an accident that damages the magnetic head due to the shutter closing operation.

[Brief description of drawings]

FIG. 1 is an enlarged plan view showing a main part of a magnetic disk cartridge loading / unloading mechanism according to an embodiment of the present invention in a cartridge loaded state.

FIG. 2 is a diagram showing a direction of a force that a pin in FIG. 1 exerts on a cartridge.

FIG. 3 is a diagram showing a state in an initial stage of a disengagement operation in which a push-back mechanism operates.

FIG. 4 is a view showing a state where the shutter opening mechanism has returned to the original state.

FIG. 5 is a plan view of a magnetic disk cartridge applicable to the mechanism of the present invention.

FIG. 6 is a bottom view of a magnetic disk cartridge applicable to the mechanism of the present invention.

FIG. 7 is a plan view before mounting the magnetic disk cartridge.

FIG. 8 is a side view before mounting the magnetic disk cartridge.

FIG. 9 is a side view of a magnetic disk cartridge mounted state.

FIG. 10 is a partially cutaway side view of a magnetic disk cartridge mounted state.

FIG. 11 is a plan view of a magnetic disk cartridge mounted state.

FIG. 12 is a plan view showing the magnetic disk cartridge with the holder removed.

FIG. 13 is a diagram showing a state in which a gap is formed between the shutter and the magnetic head.

[Explanation of symbols]

 1 magnetic disk cartridge 2 magnetic disk 3 cartridge body 4 shutter 5,6 opening window 7 spring 8 holder 9 chassis 10 slider 10a notch 10b opening side edge 11 shutter lever 12, 21 pin 13 spring 17, 19 magnetic head 20 lever 20a 1st Vertical bent piece 20b Second vertical bent piece 30 Notch 30a Side surface 30b Inner surface 31 Front edge

Claims (1)

[Scope of utility model registration request] 1. A magnetic disk cartridge having a notch at a front edge thereof and a shutter for closing an opening window for inserting a magnetic head of the cartridge main body, the magnetic disk cartridge being inserted and inserted into the cartridge main body. By the pressing operation of the holder for holding the magnetic disk cartridge and the eject button at the time of disengagement, the holder is moved in the same direction as the insertion of the magnetic disk cartridge in a plane parallel to the surface of the magnetic disk cartridge in the holder, A slider for moving the holder together with the magnetic disk cartridge in a direction orthogonal to the plane of the magnetic disk cartridge so that the magnetic disk cartridge is separated from the magnetic head is rotatably provided. When the magnetic head comes out of the opening window, the magnetic head A lever that locks a slider that is rotated and moved so as not to return when moved until a gap is formed between the shutter and the holder, is rotatably provided on the holder, and the magnetic disk The lever is urged in a direction to push the cartridge out of the holder, and a pin provided on the lever and having a movable locus is an arc. The lever is provided in the process of inserting the magnetic disk cartridge into the holder. pivot and the pin is open it by pressing the shutter, the side to which the pin engages in a cutout of the front edge of the cartridge body, to form a notch
The pin is located closer to the rotation fulcrum of the lever than the pin, and
In the same direction as the insertion direction of the above magnetic disk cartridge
Abutting the extending side surface of the biased lever
A shutter opening mechanism that opens the shutter in a state in which the rotation is restricted and an ejection force is not applied to the magnetic disk cartridge, and a part of the locking lever, and locks the slider of the locking lever. A magnetic disk cartridge loading / unloading mechanism having a structure which comprises an initial push-back mechanism that pushes back the magnetic disk cartridge to a state in which the engagement between the notch and the pin is released by the rotation at this time.