JP3458726B2 - Disk unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] The present invention relates to a disk drive.
In particular, a pair of heads are arranged so as to sandwich the recording medium.
Disk device. [0002] 2. Description of the Related Art For example, a flexible recording medium (magnetic disk) is used.
The disk cartridge containing the disk
The magnetic disk devices that perform magnetic recording and reproduction are
A pair of magnetic heads (upper head and lower head)
The disk is in sliding contact with the disk, and magnetic recording is performed on both sides of the magnetic disk.
The recording and reproducing process is performed. [0003] A conventional magnetic disk drive is a disk car.
The holder into which the cartridge is inserted and the eject operation
Slide the holder to the disc cart by sliding in the eject direction.
Insert / non-record disc cartridge from ridge mounting position
Slider to move to playback position and disc in holder
When the cartridge is inserted, it rotates and slides.
A latch lever for releasing locking of the material. And
The holder has pins protruding on both sides fitted into the inclined groove of the slider
Has been supported. The upper head and the lower head are
Provided on the ridge. The head carriage is
And a carriage arm.
The carriage arm is moved by the force of the torsion spring.
It is biased toward the ridge base. The upper head is a carry
The lower head is mounted on the carriage base.
Are located in In addition, on the side of the carriage arm
Has a contact portion that contacts the holder. [0005] Therefore, when the holder slides and slides,
When moving to the mounting position or the insertion / non-recording / playback position,
As a result, the head arm is displaced and the disc cartridge is displaced.
Slide each magnetic head against the magnetic disk stored in the cartridge.
Or move the magnetic head away from the magnetic disk
You. [0006] However, as described above,
The recording medium is slid on the upper surface and the lower head is
Disk drives that perform magnetic recording and reproduction by sliding contact
Disk device is in non-recording / reproducing state (floppy disk device
In the state where the recording medium is not mounted), transport etc.
The upper and lower heads to support the non-recording / reproducing position.
The supporting member is bent or moved,
Comrades collide and break, or support the head
The gimbal spring may be deformed. However, recent disk drives (particularly, disk drives)
Floppy disk drive) is a portable personal computer
Data, and portable personal computers.
Computers can be used outdoors outside the office
More and more. For this reason, the conventionally assumed impact
An impact force greater than the force (impact force received during transportation, etc.) is applied.
(For example, dropped)
The conventional mechanism for preventing head collision prevents
A new problem that it cannot be stopped
Was. [0008] The present invention has been made in view of the above points.
Yes, large impact force not expected in the past
Disk device that can reliably prevent collision between
The purpose is to provide a device. [0009] [MEANS FOR SOLVING THE PROBLEMS]
In the present invention, a recording medium is inserted and held.
Non-recording / playback where the recording medium is inserted
A moving mechanism for moving between a position and a predetermined recording / reproducing position;
At the predetermined recording / playback position,
An upper head disposed to face an upper surface of the recording medium
Below the recording medium at the predetermined recording / reproducing position.
The lower head, which is arranged to face the surface, and the holder
The upper head and lower head are rotatably mounted.
It can move back and forth between
Located between the upper head and the lower head during recording and reproduction.
Absorbs shocks retracting from between the upper and lower heads
A disk device comprising:The shock
The absorbing member is interposed between the upper head and the lower head
A shock absorbing portion formed so as to extend and a bearing mounted on the holder.
Shaft part, and the shock absorbing part in the opposite direction to the shaft part.
An extending balance weight portion,The shock
Centering on the bearing position of the absorbing member to the holderThe opposition
Both the shock absorbing part and the balance weight partMoment is short
It is characterized in that they are configured to be the same. [0010] The disk device is configured as described above.
As a result, the shock absorbing member advances between the upper head and the lower head.
The upper head and the lower head are arranged
Between the upper and lower heads during recording and playback.
And withdrawal from the space between them. For this reason,
Strong impact force is applied to the disk drive during recording and playback.
Shock absorber between the upper and lower heads.
Shock absorberHeads come into direct contact with each other
No shock absorberShock absorberAbut.
Therefore, the applied shock is applied to the head by the shock absorbing member.Opposition
Shock absorberIs absorbed by the shock absorbing member
To prevent damage to each head
Can be. In recording and reproducing, the shock absorbing portion
LumberShock absorberRetracts from between the upper and lower heads
Because of the shock absorbing memberShock absorberIs the recording
It does not interfere with raw processing. Also, shock absorption
Centering on the bearing position of the member to the holderShock absorber and bar
Lance weight partMake sure that the moments are almost the same.
As a result, the shock absorbing member rotates when a shock is applied.
Can be prevented, and each head can be reliably protected.
Can be. That is, the vertical direction (the direction in which each head
When a shock is applied in the direction
No rotational power is generated, but impact is applied in directions other than up and down.
When applied, the impact force rotates the impact absorbing member.
Force is generated. Now, suppose that the center of rotation of the shock absorbing member is
Both the shock absorbing part and the balance weight partMoment is uneven
(Ie, the center of rotation is the center of gravity of the shock absorbing member)
Position), the applied impact force
The shock absorbing member is easily rotated. in this way,
Is the shock absorbing member between the upper and lower heads when the impact force is applied?
If they are shifted, each head will come in direct contact.
This makes it impossible to prevent damage to each head. However, the bearing of the shock absorbing member to the holder is provided.
Center on positionBoth the shock absorbing part and the balance weight part
By configuring the moments to be approximately the same,
The shock absorbing member is moment balanced around the bearing position
Are balanced so that even if external force is applied, the shock absorbing member
Does not easily rotate. Therefore, shock absorption
The member maintains the state interposed between the heads, and
Head can be reliably protected. [0014] Next, an embodiment of the present invention will be described.
This will be described with reference to the drawings. 1 to 4 show one embodiment of the present invention.
Show an example disk device 1 (magnetic disk device)
I have. FIG. 1 shows that the disc cartridge 4 is not mounted.
Disk device (hereinafter referred to as non-recording / reproducing state)
FIG. 2 is a perspective view showing a disk cartridge 4;
Disk with the attached (hereinafter referred to as attached state)
FIG. 2 is a perspective view showing the device 1. FIG. 3A shows a non-recorded state.
FIG. 3 is a plan view showing the disk device 1 in a reproducing state, and FIG.
(B) is a plan view showing the disk device 1 in the mounted state.
You. FIG. 4A shows a disk device in a non-recording / reproducing state.
FIG. 4B is a cross-sectional view showing the disk 1 in a mounted state.
FIG. As shown in each figure, the disk device 1
In brief, the frame 2, holder 5, latch lever 6, f
Carriage 8, slider 15, shock absorbing member 20,
Shock absorbing member moving lever 30 (hereinafter simply referred to as moving lever)
Etc.). Of these, holder 5,
The rider 15 and the latch lever 6 are used as a recording medium.
Loading the disc cartridge 4 into a predetermined recording / reproducing position
Configure the mechanism. In particular, the slider 15 and the latch lever
Reference numeral 6 denotes the disk cartridge 4 stored in the holder 5
It functions as a recording medium moving mechanism for moving. Below
Details of each of the constituent elements described above will be described. The holder 5 is used to mount the disc cartridge 4.
It is provided to go up and down in response to wear and eject operation
And the head carriage 8 relatively enters the top plate 5a.
Opening 5b is provided. Also a holder
5 has a latch lever 6 and a shock absorbing member 2 on the top plate 5a.
0 is rotatably supported. The latch lever 6 is
Insert the shutter 4a of the disk cartridge 4 into the cartridge
It rotates to open in connection with the
Disk cartridge 4 is not mounted (non-recording / reproduction
Machine that regulates the movement of the slider 15
Noh plays. Also, the shock absorbing member 20 is
As described in more detail in
The lower head 10 and the upper head 12 provided on the ridge 8
It has a function to prevent collision when a strike is applied
Things. The latch lever 6 has a disc cover at its end.
Engage with the shutter 4a while sliding the front end of the cartridge 4
And an engaging portion 6a for sliding the shutter 4a in the opening direction.
Is provided. This latch lever 6 is
The shaft 5f is supported by a plate 5a.
It has an arc-shaped cam portion 6b centered at f. Also, shaft 5
A position separated from the shaft hole 6d where f fits toward the cam portion 6b.
Is provided with a spring retaining hole 6c. This cam portion 6b
In the non-recording / reproducing state, the slider 15 is locked,
When the disc cartridge 4 is inserted into the holder 5,
The slider 15 is further rotated to release the engagement of the slider 15. The coil spring 7 urges the latch lever 6 to rotate.
One end of which has a spring retaining hole 6 of the latch lever 6.
c and the other end is hooked on the slider 15.
Therefore, the latch lever 6 is moved by the tensile force of the coil spring 7.
3 is urged in the counterclockwise direction in FIG. head
The carriage 8 is placed on the frame 2 in the disk radial direction (A
(B direction).
9, a lower magnetic head 10 (hereinafter, referred to as a lower head),
The carriage arm 11 and the upper magnetic head 12 (hereinafter
Lower and upper heads). The lower head 10 is fixed to the carriage base 9
And the upper head 12 is mounted on the carriage arm 11.
Is fixed via a gimbal spring 11a. disk
With the cartridge 4 mounted, the lower head 1
0 is a magnetic disk stored in the disk cartridge 4
(Not shown in the figure) so that it faces the lower surface, and the upper head 1
2 is disposed so as to face the upper surface of the magnetic disk.
You. The head carriage 8 has a stepping mechanism.
A lead screw 14 driven by a motor 13
And the frame according to the rotation of the lead screw
2 moves in the directions of arrows A and B in FIG.
0 and 12 are tracking methods for magnetic disk (not shown)
In the direction (radial direction). Also, the carriage arm
Numeral 11 denotes a vertical direction on the carriage base 9 via a leaf spring.
(The direction in which the heads 10 and 12 face each other).
And provided at the base end of the carriage base 9
The pressing force of the torsion spring 9a
It is urged toward case 9. Further, the side of the carriage arm 11
The contact portion 11a is formed to protrude, and the contact portion 11a
It is formed on the top plate 5a (holder 5) so as to extend in the direction of arrow A in the figure.
It is configured to contact the upper surface of the rail 5j.
Therefore, the carriage arm 11 is in the non-recording / reproducing state.
Is pushed upward by the raising of the holder 5, and the upper head 12
Is separated from the lower head 10. However, a portable device on which the disk device 1 is mounted
The personal computer for obi has been dropped,
When a large impact force is applied to the disk device 1,
The upper head 12 and the lower head 10 may collide with each other.
Is as described above. The slider 15
It is arranged on a top plate 5 a of the holder 5. This slider
15 is a top plate 15a facing the top plate 5a of the holder 5,
Side portion 15 bent downward from both side edges of top plate 15a
b, 15c, and the top plate 15a for weight reduction.
A hole 15d is formed. The side portions 15b, 15c of the slider 15
Is provided with a protruding pin 5d protruding from both sides of the holder 5 (FIG. 5).
And the inclined groove 15e to which the slider 15 is fitted.
And a guide hole 15f for guiding the sliding operation in
Have been. Thereby, the slider 15 moves in the direction of arrow AB in the drawing.
Only the sliding in the direction is allowed. Also,
Contact portions 15o to 15r are formed at both ends of the top plate 15a.
The contact portions 15o to 15r are
So as to slidably contact the upper ends of both side surfaces 2a and 2b of the
Has been established. Therefore, the slider 15 is moved to the contact portion 15o.
15r contact the upper ends of both side surfaces 2a and 2b of the frame 2.
While the downward movement is regulated by the
It slides in the AB direction. In addition, it projects at the center of both sides of the holder 5.
The engaging portion 5e (see FIG. 5)
a, 2b fitted into a groove (not shown) provided inside
I have. The holder 5 having the above structure is used for the slider 1.
When 5 slides in the direction of arrow B in the figure, the engaging portion 5e moves upward and downward.
Movement in the direction of arrow AB is prevented by the groove extending in
Therefore, the projecting pin 5d relatively moves along the inclined groove 15e.
Move. As a result, the holder 5 moves down, and the mounted
The disc cartridge 4 is moved to a predetermined recording / reproducing position. On the other hand, an eject button is provided on the front end of the top plate 15a.
15 g of mounting portions project. Therefore, in the mounted state
And press the mounting part 15g (eject button) in the direction of arrow A.
Then, the slider 15 slides in the direction of arrow A in FIG.
The pin 5d is relatively moved along the inclined groove 15e of the slider 15.
Move up to As a result, the holder 5 moves upward and is mounted.
Move the disk cartridge 4 to the non-recording / reproducing position
You. Also, between the holder 5 and the slider 15
Is provided with a compression spring 16. This compression spring 16
Is a spring that presses the slider 15 in the direction of arrow B in the figure.
One end is hooked on the slider 15 and the other end is
It is hung on the top plate 5a. Therefore, the slider 15
The arrow is always generated by the pressing force of the compression spring 16 and the spring 7 described above.
It is urged in the B direction. In the non-recording / reproducing state, however, the slider
Reference numeral 15 denotes a position where the latch lever 6 has moved in the direction of arrow A.
Is restricted by the elastic force of the compression spring 16.
Does not move in the direction of arrow B (see FIGS. 1 and 3).
(A), the state shown in FIG. 4 (A)). Also a disk car
When the cartridge 4 is inserted, the latch lever 6 rotates.
The slider 15 by the latch lever 6
When the movement restriction is released, the slider 15 moves to the compression spring 16.
Is moved in the direction of arrow B by the elastic force of
The disc cartridge 4 moves to a predetermined recording / reproducing position (see FIG.
2, the state shown in FIG. 3 (B) and FIG. 4 (B)). As a result, the disk cartridge 4
The supplied magnetic disk is placed on a turntable.
The upper and lower heads 10 and 12 are in contact with the magnetic disk.
Touch And turntable by disk motor
By rotating the magnetic disk above, each head 1
0.12, the recording / reproducing process is performed (note that the
The table and disk motor do not appear in the figure). Subsequently, in addition to FIGS. 1 to 4, FIGS.
7, the shock absorbing member 20 and the moving lever 30 are attached.
Will be explained. FIG. 5 shows the shock absorbing member 20 and the moving lever.
It is a figure which shows the mounting structure of 30. In addition, FIG.
FIG. 6C is a plan view of the absorbing member 20, and FIG.
6B is a bottom view, and FIG. 6B is a line X1-X1 in FIG.
FIG. Further, FIG.
0C, FIG. 7C is a bottom view of the moving lever 30, and FIG.
7 (B) is a cross section along line X2-X2 in FIG. 7 (C).
FIG. 7D is an arrow indicated by arrows X3-X3 in FIG.
FIG. First, the shock absorbing member 20 will be described.
You. The shock absorbing member 20 is formed of a plate material having elasticity.
The specific materials are moldability, low cost,
Resin (plastic) is selected for its lightness
You. The shock absorbing member 20 is shown in FIGS.
So as to be rotatable inside the top plate 5a of the holder 5.
Is done. The shock absorbing member 20 is generally
Absorbing part 21, balance weight part 22, first tongue piece part 2
3, the second tongue piece 25, the shaft 26, the spring retaining portion 27,
And a connection hole 38 and the like are integrally formed.
The shock absorbing portion 21 extends from the shaft portion 26 which is the center of rotation.
It has a protruding strip shape. This shock absorbing part 21
Is a predetermined position as shown in FIGS. 4 (A) and 6 (B).
(Indicated by reference numerals 41 and 42 in the figure).
In the holder when attached to the holder 5
It is comprised so that it may project toward. Further, a position close to the shaft portion 26 of the shock absorbing portion 21.
The first tongue piece 23 is formed on the holder. This first
The tongue piece 23 is shown in FIGS. 4, 5 and 6B.
As shown in FIG.
Have been. The shock absorbing portion 21 having the above configuration will be described later in detail.
As described above, when the disk device 1 is in the non-recording / reproducing state,
Is located between the lower head 10 and the upper head 12
It is configured as follows. By the way, the lower and upper heads 10,
The position 12 moves as the head carriage 8 moves.
However, the shock absorbing portion 21 has
The length is set so that the heads 10 and 12 are in the middle position
Have been. The balance weight portion 22 is opposed to the shaft portion 26.
And extends in a direction opposite to the direction in which the shock absorbing portion 21 extends.
The configuration is as follows. This balance weight part 22
The shape and weight depend on the rotational center position of the shock absorbing member 20 (substantially
The position of the center of gravity is set so as to coincide with the shaft portion 26.
That is, the shock absorbing member 20 is moved right and left around the shaft 26.
Are configured to balance
Have been. The center outer periphery of the balance weight portion 22
A second tongue piece 25 is formed at the position. This second
As shown in FIG. 6 (B), the tongue piece 25 of
It is configured to have a slight step with respect to the weight portion 22
I have. FIG. 6A of the balance weight portion 22 is shown in FIG.
A spring retaining portion 27 is formed at the outer left end of the
You. As will be described later, a coil is
One end of the spring 29 is hooked. Furthermore, the balance way
In the vicinity of the right end of the outer periphery in FIG.
A connection hole 28 is formed. The connection hole 28 will be described later.
The connecting pin 33 provided on the moving lever 30 is engaged with
Thereby, the shock absorbing member 20 and the moving lever 30 are connected.
Configuration. The shock absorbing member 20 having the above-described configuration is
When the portion 26 is supported by the shaft hole 5k of the holder 5,
Supported by Luda5. At this time, it is formed on the shock absorbing member 20.
The inserted first tongue piece 23 is inserted into the holder 5.
The second tongue piece 25 is inserted into the through hole 5h,
Is configured to be inserted into an arc-shaped hole 5g formed in
Have been. As a result, the first tongue piece 23 is attached to the top plate 5a.
The second tongue piece 25 is engaged with the outer peripheral portion of the insertion hole of the top plate.
5a is engaged with the outer peripheral edge of the arc-shaped hole. Therefore, shock absorption
The receiving member 20 should not be detached from the top plate 5a of the holder 5.
And around the shaft 26 in the directions indicated by arrows D1 and D2.
It becomes a movable configuration. One end of the coil spring 29 is
As described above, it is hooked on the spring hooking portion 27 of the shock absorbing member 20
The other end is formed on the holder 5 and the spring retaining portion 5 is formed.
p. Therefore, the shock absorbing member 20
It is turned in the direction of arrow D2 in the figure by the elastic biasing force of the il spring 29.
It is being urged. However, the end of the arc-shaped hole 5g has a spring hook.
A stopper 5r configured to contact the stop portion 27 is formed.
Therefore, the direction of the arrow D2 in the drawing of the shock absorbing member 20
In the rotation in the direction, the spring retaining portion 27 comes into contact with the stopper 5r.
Is regulated by: Also, the spring retaining portion 27
In the state of contact with the stopper 5r,
The collecting part 21 is located between the lower head 10 and the upper head 12.
It is configured to be. Next, the moving lever 30 will be described.
You. The moving lever 30 is attached to the holder 5 as shown in FIG.
(Specifically, holder 5 and slider 1)
5), which is roughly
Part 31, arm part 32, connecting pin 33, engagement convex part 35,
It is constituted by a shaft hole 36, an engagement portion 37, and the like. Base
The portion 31 has a substantially sector shape, and the shaft hole 3
6 and an engaging projection 35 is formed at the center.
The formed opening 34 is formed. In addition, the base 31
An arm 32 extending outward is formed at a predetermined position on the outer periphery.
At the position near the tip of the arm portion 32.
A connecting pin 33 is provided upright. Further, the outer periphery of the base 31 in FIG.
An engagement portion 37 is formed at the right end. This engagement part
37 is in the same direction as the upright direction of the connecting pin 33 described above.
It is formed to stand upright. The movement level with the above configuration
The bar 30 has a shaft hole 36 formed in the holder 5 and a shaft portion 38 erected on the holder 5.
Is supported by the holder 5. This
The moving lever 30 is moved on the top plate 5a of the holder 5 by an arrow in the drawing.
It becomes a structure rotatable in the directions of the marks E1 and E2. The moving lever 30 is attached to the holder 5.
When connecting, the connecting pin 33 formed on the arm 32 is
In the connection hole 28 formed in the shock absorbing member 20 described above,
It is inserted. Thereby, the moving lever 30 and the shock absorbing portion
The material 20 is connected via the connection pin 33 and the connection hole 28.
Configuration. Also, move the moving lever 30 to the holder 5.
At the time of attachment, it is formed in the opening 34 of the moving lever 30.
The engaging convex portion 37 is a hook-shaped engaging member formed upright on the holder 5.
The engaging portion 37 is attached to the holder 5 so as to engage with the dowel 5q.
It is configured to be located within the formed notch 5m.
I have. Thus, the moving lever 30 is moved to the holder 5
Without disengaging from the top plate 5a
Thus, it is possible to rotate in the directions of arrows E1 and E2 in the drawing.
In addition, in the state where the moving lever 30 is attached to the holder 5,
A step formed on the holder 5 is provided above the arm 32.
5i is located at the position, so that the arm 3
2 is prevented from floating. Further, the engaging portion 37 is moved as described above.
When the bar 30 is attached to the holder 5, the notch 5
m, and protrudes into the holder 5 through the
Disk cartridge 4 is properly inserted into holder 5
At this time, the erroneous insertion identification portion formed on the disc cartridge 4
4-1 (Beveling is performed only at one corner and
(The part where the pa part is formed)
ing. Then, the erroneous insertion discriminating section 4 which is formed into a tapered section.
Only when -1 is engaged with the engagement portion 37, the engagement portion 37
Displaced in the direction of the middle arrow E1;
Collides with the disk cartridge 4 and the disk cartridge 4
Is configured to prevent insertion of the cartridge 4 into the holder 5.
You. Therefore, with the above configuration, the moving lever 3
0 is also used as a mechanism for preventing erroneous insertion of the disc cartridge 4.
Can work. This allows for separate discs
An erroneous insertion prevention mechanism for preventing erroneous insertion of the cartridge 4 is provided.
The disk drive 1 becomes smaller and thinner.
And cost reduction can be achieved. In each of the above constructions, the coil spring
29 and the moving lever 30 move the shock absorbing member 20.
To move the shock absorbing member. continue,
The shock absorbing member 20 and the moving lever 30 having the above configuration
Will be described. First, the disk cartridge
4 shows a non-recording / reproducing state in which the device 4 is not mounted.
This will be described with reference to FIGS. In the non-recording / reproducing state, the disc cartridge
Since the holder 4 is not mounted on the holder 5, the moving lever 3
0 is in a free state. On the other hand, as mentioned above
The shock absorbing member 20 is moved by an arrow D in the drawing by a coil spring 29.
The rotation is urged in two directions, and the spring retaining portion 27
The rotation is restricted by contact with the topper 5r.
It has a configuration. In this state, the shock absorbing member 2
The shock absorbing portion 21 of the lower head 10 and the upper head 12
It is comprised so that it may be located between positions. Therefore, for example, if the disk drive 1 is a portable
-This portable personal computer installed in a personal computer
Large impact force caused by dropping the computer
The lower head 10 and the upper head
12 has an impact absorbing portion 21 interposed therebetween.
The comrades 10 and 12 do not directly contact each other. That is, opposition
When a shock is applied, each of the heads 10 and 12
Abut. As described above, the shock absorbing portion 21 has elasticity.
And is formed of a resin having
Because it has a cantilever-like configuration, it has a springy structure.
It has become. Therefore, the applied shock is
The shock absorbing members 10 and 12 come into contact with the shock absorbing members,
It is absorbed by the collecting part 21. Thereby, the disk device 1
Even when a large impact force is applied, the impact absorbing member 20
Ensures that each head 10, 12 is damaged
To improve the reliability of the disk device 1.
Can be done. In addition, depending on the magnitude of the assumed impact force,
Is to form the shock absorbing member 20 with resin as described above.
In such a configuration, the impact may not be reliably absorbed.
In this case, as in the case of the shock absorbing member 20A shown in FIG.
The shock absorbing part 21 and the balance weight part 22 are
And the heads 10, 12
Configuration in which the cushion material 39 is arranged only in the area where it comes into contact with
It may be. Thus, the material of the shock absorbing member 20
It is assumed by change and arrangement of cushion material 39, etc.
Shock absorber with shock absorption capacity corresponding to various impact forces
The material 20 can be realized. By the way, the above-mentioned shock absorbing effect is particularly
The direction in which the impact force is indicated by the arrow Z in the figure (each head 10, 12
This is effective when applied in opposite vertical directions. I
If you drop your portable personal computer,
The impact force generated at the same time is applied only in the direction indicated by the arrow Z.
Not necessarily, the direction perpendicular to the arrow Z direction (ie,
When applied in the plane direction that is horizontal to the frame 2)
There is also. Thus, in the direction orthogonal to the direction of arrow Z,
The acting impact force (hereinafter referred to as side impact force)
It acts as a force for urging the receiving member 20 to rotate. Therefore,
In a configuration in which the shock absorbing member 20 easily rotates,
If a side impact force stronger than the elastic force of the il spring 29 is applied,
In this case, the shock absorbing member 20 rotates to move between the heads 10 and 12.
It is conceivable that the position is shifted. In this case,
The heads 10 and 12 cannot be protected.
I will. However, as described above, the shock absorbing member 2
0 means that the moments on both sides about the shaft 26 are substantially the same
It is configured so that That is, the rotation of the shock absorbing member 20
The center of rotation (substantially equivalent to the position of the center of gravity) coincides with the shaft portion 26
It is configured as follows. With this configuration,
The impact absorbing member 20 may rotate when an impact force is applied.
Can be prevented, and the heads 10 and 12 can be reliably protected.
Can be. Hereinafter, the reason for this will be described with reference to FIG.
I will tell. FIG. 9A shows a shock absorbing portion in this embodiment.
FIG. 4 is a diagram illustrating a moment acting on a material 20. Shown in the figure
As described above, the shock absorbing member 20 according to the present embodiment
The rotation center position G of the absorbing member 20 coincides with the shaft portion 26.
It is configured. On the other hand, FIG.
Moments on both sides around the center are not the same,
The rotation center position G of the shock absorbing member 20B matches the shaft portion 26.
It is not configured. The shock absorbing members 20 and 20B having the above-described configurations.
Is assumed to be applied to the side impact force F. This side impact
The impact force F is applied to the entire shock absorbing members 20 and 20B.
However, here, for convenience of explanation, the shock absorbers 21 and 21A are used.
To the end of the balance weight portion 22 and 22A.
The description will be made on the assumption that the one-side impact force F is applied. Destination
9B, the rotation of the shock absorbing member 20B
In a configuration in which the turning center position G does not coincide with the shaft portion 26,
Originally, the moment indicated by the arrow M in the figure is acting.
Therefore, the side impact force F stronger than the elastic force of the coil spring 29 is
When the voltage is applied, the shock absorbing member 20B easily rotates.
I will. On the other hand, in the present embodiment shown in FIG.
In the configuration, the moment balance about the shaft 26 is
Balanced, stronger than the elastic force of the coil spring 29
Even if the side impact force F is applied, the shock absorbing member 20 can be easily formed.
It does not rotate. Therefore, the side impact force F is marked
Even if it is applied, the shock absorbing member 20 does not rotate, and the shock absorbing portion 2
1 maintains the state interposed between the heads 10 and 12
To ensure that each head 10, 12 is protected.
it can. Subsequently, the disk cartridge 4 is placed in the holder.
Shock absorbing member 20 and moving lever 3 when inserted in
0, FIG. 2, FIG. 3 (B) and FIG.
Will be described. In the following description, the disc cartridge
The case where the cartridge 4 is properly inserted into the holder 4 will be described.
It shall be. Disk cartridge 4 in holder 4
When properly inserted, the disk cartridge 4
The incorrect insertion identification section 4-1 (see FIG. 2)
And engages with the engaging portion 37 provided in the first position to urge the movement. this
As a result, the moving lever 30 moves around the shaft 38 in the figure.
It turns in the direction of arrow E1. This rotation of the moving lever 30
Accordingly, the arm 32 also rotates in the direction of the arrow E1.
The moving lever 30 receives an impact through the connecting pin 33 and the connecting hole 23.
The absorbing member 20 is urged to rotate in the direction of arrow D1 in the figure. As described above, when the moving lever 30 is urged,
The rotation of the shock absorbing member 20 in the direction of the arrow D1 in FIG.
Thus, the shock absorbing portion 21 is provided between the lower head 10 and the upper head 12.
Evacuate position between And disk cartridge
4 is inserted into the holder 4 to a predetermined position,
The absorbing section 21 is used for recording / reproducing processing by the heads 10 and 12.
Move out of the way. Therefore, the shock absorber
Even if the material 20 is provided, this obstructs the recording / reproducing process.
There is no such thing. Further, in this embodiment, the moving lever 30 is
In conjunction with the insertion operation of the disc cartridge 4 into the holder 4
Since the shock absorbing member 20 is retracted,
The shock absorbing member 20 moves using the operation of the existing components.
Can be done. Therefore, the shock absorbing member 20 is moved.
It is not necessary to provide a new drive source for
Reduce the size, thickness, and cost of the disk drive 1
be able to. Next, the impact absorption viewed from the side using FIG.
The operation of the member 20 will be described. FIG.
State before the disk cartridge 4 is inserted into the
Is shown. As described above, the shock absorbing member 20 is
It is arranged in da5. Thus, the shock absorbing member 20
Is arranged on the holder 5 so that the shock absorbing member 20 is
It can be provided at a position close to each of the heads 10 and 12.
The shock absorbing member 20 is arranged in another component.
In comparison, the disk device 1 can be made smaller and thinner.
Wear. The shock absorbing member 20 constituting the shock absorbing member 20
The receiving part 21 is bent at predetermined positions 41 and 42.
So that it projects into the holder 5 in the mounted state.
(See FIG. 4A). In addition, shock absorber
The member 20 is formed of an elastic material such as a resin. Yo
Therefore, as shown in FIG.
When the cartridge 4 is inserted, the impact absorbing member 20 (impact
The absorbing portion 21) faces the top plate portion 5a of the holder 5 with insertion.
Elastically deform. As a result, the shock absorbing member 20 is
Located in the gap between the disk cartridge 4 and the disk cartridge 4
It will be. In this state, the shock absorbing member 20
It does not interfere with the raw processing, and the shock absorbing member 2
Even if 0 is disposed in the holder 5, no problem occurs. This
As shown in FIG.
It can be stored in a narrow space between the part 5a and the disk cartridge 4.
To reduce the size and thickness of the disk drive 1.
Can be. Further, as described above, the impact absorbing member 20
The shock absorber 21 is configured to protrude into the holder 5.
As a result, the disk cartridge 4 is inserted into the holder 5.
When the disc cartridge 4 is inserted, the disc cartridge 4
As a result, it is pressed toward the bottom surface 5n of the holder 5. This structure
The disk cartridge 4 and the holder
Even if there is a gap between
When inserting the ridge 4 into the holder 5,
It is possible to prevent the head 4 from coming into contact with the head 4.
Wear. The reason will be described with reference to FIG. As shown in FIG.
Between the holder 4 and the holder 5,
A certain gap from the viewpoint of improving the mountability of the cartridge 4
(Indicated by an arrow ΔH in the drawing). This gap
If ΔH does not exist at all, the disk cartridge 4
The mountability of the disk device 1 is significantly reduced,
Usability deteriorates. On the other hand, on the other hand, the disk cartridge
When a gap ΔH exists between the cartridge 4 and the holder 5,
When the cartridge 4 is inserted into the holder 5 facing upward,
(Ie, as indicated by the dashed line in the figure)
The ridge 4 is inserted into the top plate 5a so as to slide.
Case), the disk cartridge indicated by the arrow ΔH1 in the figure.
The separation distance between the head 4 and the upper head 12 is reduced, and the worst
In this case, the disc cartridge 4 and the upper head 12
Contact and damage may occur. However, as in this embodiment, the shock absorbing portion
The material 20 (shock absorbing part 21) is inserted into the holder 5.
The cartridge 4 is pressed toward the bottom 5n of the holder 5.
With this configuration, the disk cartridge 4
Is always inserted at the lowest position in the gap (ie, holder
5 is inserted along the bottom 5n). Therefore, at the time of insertion
The disk cartridge 4 and the upper head 12 come into contact with each other
The disk cartridge 4 and the upper head
12 can be prevented from being damaged. In the above embodiment, the magnetic disk drive is
Although described in the example, the present invention is not limited to this, and other examples
Suitable for optical disk devices or magneto-optical disk devices.
Of course, it can be used. Also, the present invention relates to an auto-loading method.
Can be applied to disk devices with
Things. [0066] As described above, according to the present invention, non-recording / reproducing
Even if a strong impact force is applied to the disk device at times,
This impact is caused by the shock absorbing memberShock absorberAbut
By absorbing shockShock absorberAbsorbed by
This prevents damage to each head.
Wear. Also, when recording and reproducing, the shock absorbing memberOpposition
Shock absorberRetracts from between the upper and lower heads.
The shock absorbing member hinders the recording / reproducing process of each head.
There is no such thing. The bearing position of the shock absorbing member on the holder
AroundBoth the shock absorbing part and the balance weight partMo
The impact mark
It can prevent the shock absorbing member from rotating at the time of addition,
Each head can be reliably protected.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an ejected state of a disk device according to an embodiment of the present invention. FIG. 2 is a perspective view showing a mounted state of a disk device according to an embodiment of the present invention. FIGS. 3A and 3B are plan views of a disk device according to an embodiment of the present invention, in which FIG. 3A shows an ejected state, and FIG. 3B shows a mounted state. FIGS. 4A and 4B are cross-sectional views of a disk device according to an embodiment of the present invention, in which FIG. 4A shows an ejected state, and FIG. FIG. 5 is a perspective view for explaining a mounting structure of a shock absorbing member and a moving lever to a holder. FIG. 6 is a view for explaining a shock absorbing member. FIG. 7 is a view for explaining a moving lever. FIG. 8 is a view showing a modification of the shock absorbing member. FIG. 9 is a diagram for explaining a moment when an impact force is applied to the impact absorbing member. FIG. 10 is a diagram for explaining a height relationship between a magnetic disk and each head when a disk cartridge is mounted. [Description of Signs] 1 Disk device 2 Frame 3 Magnetic disk 4 Disk cartridge 5 Holder 5a Top plate 5h Insertion hole 5j Rail 5m Notch 5q Engagement claw 6 Latch lever 8 Head carriage 9 Carriage base 10 Lower head 11 Carriage arm 12 Upper head 15 Slider 15a Top plate section 16 Compression spring 20, 20A Shock absorbing member 21 Shock absorbing section 22 Balance weight section 23 First tongue piece 25 Second tongue piece 28 Connection hole 29 Coil spring 30 Moving lever 31 Base 32 Arm part 33 Connecting pin 35 Engagement convex part 36 Shaft hole 37 Engagement part 39 Cushion material

Continuation of the front page (56) References JP-A-2-143939 (JP, A) JP-A-5-234234 (JP, A) JP-A-5-114267 (JP, A) JP-A-10-112172 (JP) JP-A-60-7668 (JP, A) JP-A-62-267717 (JP, A) JP-A-2000-137964 (JP, A) JP-A-2000-137962 (JP, A) JP-A-2000-137965 (JP, A) JP-A-2000-13793 (JP, A) Japanese Utility Model Application Laid-Open No. 62-190974 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 21/02-21/06 G11B 21/12-21/26 G11B 25/04 G11B 33/12

Claims (1)

(57) [Claims] A holder for inserting a recording medium and holding the recording medium.
And a non-recording / reproduction position where the recording medium is inserted into the holder.
And a moving mechanism for moving between a predetermined recording / reproducing position.
Loading mechanism, At the predetermined recording / reproducing position, the upper surface of the recording medium
An upper head arranged to face, At the predetermined recording / reproducing position, the lower surface of the recording medium
A lower head arranged to face, By being rotatably supported by the holder,
Between the head and the lower head.
Position between the upper head and lower head during non-recording / reproduction
During recording and reproduction,
Disk device comprising a shock absorbing member
WhatThe shock absorbing member is located between the upper head and the lower head.
A shock absorbing portion extending and formed so as to be interposed;
And a shock absorbing portion for the shaft portion.
A balance weight portion formed to extend in the opposite direction, Centering on the bearing position of the shock absorbing member to the holder
ToBoth the shock absorbing part and the balance weight partMaumee
The characteristic is that the fonts are designed to be almost identical.
Disk device.