JP2004152360A - Hard disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify the shape of a position regulating ramp which guides the read-write head in a hard disk drive of a dynamic loading/unloading system. <P>SOLUTION: The head actuator 6 is formed in a shape that its suspension 4 is articulated with the arm body 5 in the direction approaching the disk 2. The suspension 4 has a read-write head 3 at its end and a lift tab 12 disposed closer to its root than the the head 3. The position regulating ramp 7 has a slope 7a extending along the trajectory of the lift tab 12 which moves as the head actuator 6 turns. By inflecting the head actuators 6, the slope 7a for a surface of the disk 2 and the slope 7a for the other surface of the disk 2 can be formed in one body and disposed outside the disk 2. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a dynamic load / unload type hard disk device in which a read / write head is retracted outside a disk-shaped recording medium when information is not read / written. More specifically, the position regulating lamp has a simple shape by making the head actuator bent so that the entire position regulating lamp can be arranged outside the disk-shaped recording medium.
[0002]
[Prior art]
In recent years, in hard disk drives, when reading / writing information is not performed for the purpose of improving impact resistance and preventing sticking of the read / write head to the disk when not in use, the read / write head is placed on the surface of the disk. There is an increasing number of systems that employ a so-called dynamic load / unload system in which the read / write head is retracted from the top to the outside and the read / write head is moved over the surface of the disk only during use.
[0003]
FIG. 7 is a perspective view showing an example of the overall configuration of a conventional hard disk device employing a dynamic load / unload method. In the conventional hard disk drive 51, a head actuator 56 including a read / write head 53 for recording and reproducing information on a disk 52, a suspension 54 for supporting the read / write head 53 on the distal end side, and an arm body 55 for fixing the suspension 54 is provided. Built-in.
[0004]
The head actuator 56 is attached so that the arm main body 55 is rotatable with respect to the housing 58 around the pivot 57. The head actuator 56 is driven to rotate by a voice coil motor (VCM) 59 provided on the opposite side of the suspension 57 with respect to the pivot 57. Further, the supply of electric power to the head actuator 56 and the exchange of signals with the read / write head 53 are performed via a flexible printed circuit (FPC) 60 fixed to the arm body 55.
[0005]
Here, in the conventional hard disk drive 51, the head actuator 56 has a symmetrical shape in the extending direction. In addition, such a shape is also called an in-line type.
[0006]
A lift tab 61 is provided at the tip of the suspension 54, and the lift tab 61 is guided by a position regulating lamp 62 attached to the housing 58, so that the read / write head 53 is retracted from above the surface of the disk 52 to the outside. Loading and loading are performed to cause the read / write head 53 to land on the surface of the disk 52 from the outside.
[0007]
FIG. 8 is a perspective view of a main part showing an operation example of a conventional hard disk device. FIG. 8A shows a state in which the read / write head 53 is retracted, and FIG. 8B shows a state during loading or unloading.
[0008]
The lift tab 61 is a projection provided at the tip of the suspension 54 and is located on the tip side of the read / write head 53. The position regulating ramp 62 has a slope 62a with which the lift tab 61 contacts, and while the lift tab 61 is in contact with the slope 62a of the position regulation ramp 62, the interval between the two suspensions 54 is regulated, and the read / write heads 53 are separated from each other. And the contact between the read / write head 53 and the disk 52 is prevented.
[0009]
Now, the read / write head 53 flies above the surface of the disk 52 by the air flow generated by the rotation of the disk 52. Therefore, when loading the read / write head 53 onto the surface of the disk 52, it is necessary to support the lift tab 61 with the position regulating lamp 62 until the read / write head 53 reaches the surface of the disk 52. When the read / write head 53 is unloaded to the outside of the disk 52, it is necessary to support the lift tab 61 with the position regulating lamp 62 before the read / write head 53 goes out of the disk 52.
[0010]
That is, as shown in FIG. 8B, it is necessary to support the lift tab 61 with the position regulating lamp 62 in a state where the read / write head 53 is located on a surface near the outer periphery of the disk 52. Here, when the read / write head 53 is located on the surface of the disk 52, the lift tab 61 is also located on the surface of the disk 52. Therefore, if the contact point between the lift tab 61 and the position regulating lamp 62 is not on the surface of the disk 52, Therefore, it is necessary to arrange the tip of the position regulating lamp 62 at a position covering the surface of the disk 52. Usually, two read / write heads 53 for both sides are required for one disk 52. Therefore, as shown in FIG. 8A, the sectional shape of the tip of the position regulating lamp 62 is a U-shaped fork. In a state.
[0011]
In recent years, in a small hard disk drive, the read / write head has become smaller and the disk has become thinner. Therefore, in a structure like the conventional hard disk drive 51, the tip of the position regulating lamp 62 also needs to be thinner. In the thickness of the read / write head 53 (flying head slider) that is frequently used, the tip of the position regulating lamp 62 must be thinner than the thickness of the disk 52. Normally, plastic moldings are often used because the position control lamp 62 is required to be slidable and wearable. However, the molding is difficult because the thickness is very thin, and the accuracy is difficult to obtain. There was a problem that it was bad and resulted in expensive parts.
[0012]
FIG. 9 is a plan view showing a configuration example of a main part of another conventional hard disk device. This hard disk device is an example in which a bent bar member 63 is offset and arranged on a suspension 54. In this example, since the bar member 63 is located outside the disk 52 while the read / write head 53 is located on the surface near the outer periphery of the disk 52, the tip of the position regulating lamp 64 needs to have a U-shape. It is possible to increase the wall thickness without. However, when the bar member 63 slides with respect to the position regulating lamp 64 due to the rotation of the head actuator 56, a torsional force is applied to the suspension 54 and the read / write head 53, so that it is difficult to load and unload in a stable posture. Problem.
[0013]
On the other hand, a hard disk drive having a head actuator bent in an L-shape has been proposed (for example, see Patent Document 1).
[0014]
[Patent Document 1]
JP-A-10-125014
[0015]
[Problems to be solved by the invention]
However, in the conventional hard disk drive, since the head actuator is bent in an L-shape, when the read / write head is retracted to the outside of the disk, the entire position regulating lamp enters between the suspensions. Therefore, there is a problem that the shape and thickness of the position regulating lamp are restricted in order to prevent interference between the position regulating lamp and the suspension.
[0016]
The present invention has been made to solve such a problem, and an object of the present invention is to provide an inexpensive and highly reliable hard disk drive with a simple position regulating lamp.
[0017]
[Means for Solving the Problems]
In order to solve the above-described problem, in the hard disk drive according to the present invention, two plate-like elastic members are attached at an interval on the distal end side of an arm body having a rotation drive unit, and the distal end of each elastic member is In a hard disk drive including a head actuator in which a read / write head is supported and read / write heads are arranged on both sides of a single disk-shaped recording medium that is driven to rotate, the head actuator applies each elastic member to an arm body. Each elastic member is provided with a support protrusion on the base side from a portion supporting the read / write head, and extends along the trajectory of the support protrusion due to the rotation of the head actuator. A slope on one surface side of the flat recording medium where a support protrusion provided on one of the two elastic members comes into contact; A position regulating ramp integrally provided on the other surface side of the disk-shaped recording medium, on the other side of the recording medium, with which the support projection provided on the other elastic member comes in contact. The bending angle of the head actuator is set so that the extending direction intersects with the extending direction of the slope of the position regulating lamp.
[0018]
According to the hard disk drive of the present invention, when information is not read / written, the head actuator is rotated to move the read / write head to the outside of the disk-shaped recording medium. When the head actuator is rotated in the direction in which the read / write head moves to the outside of the disk-shaped recording medium, the shape of the head actuator is such that the elastic member is bent toward the disk-shaped recording medium with respect to the arm main body. While the read / write head supported on the distal end of the elastic member is on the surface of the disk-shaped recording medium, the support protrusion on the base side of the elastic member protrudes outside the disk-shaped recording medium. Then, the position regulating lamp is inserted between the two elastic members, and the support protrusion rides on the slope of the position regulating lamp.
[0019]
Thereby, when the read / write head moves from the surface of the disk-shaped recording medium to the outside, the read / write head does not descend and come into contact with the disk-shaped recording medium.
[0020]
Further, when the head actuator is rotated to retract the read / write head to the outside of the disk-shaped recording medium, the support protrusions of the respective elastic members are supported by the slopes of the position regulating ramps, respectively, to prevent the read / write heads from contacting each other. Here, since the direction in which the elastic member extends and the direction in which the slope of the position regulating lamp extends intersect, the entire position regulating lamp does not enter between the two elastic members.
[0021]
When reading and writing information, the head actuator is rotated while rotating the disk-shaped recording medium, and the read / write head is moved from the outside of the disk-shaped recording medium onto the surface of the disk-shaped recording medium.
[0022]
When the head actuator is rotated in a direction in which the read / write head moves on the surface of the disk-shaped recording medium, even if the read / write head reaches a surface near the outer periphery of the disk-shaped recording medium, the support protrusions are located outside the disk-shaped recording medium. And remains in contact with the slope of the position control lamp. Thus, when the read / write head moves from the outside of the disk-shaped recording medium to the surface, the read / write head does not collide with the disk-shaped recording medium.
[0023]
When the head actuator is further rotated, the support protrusions also enter the surface of the disk-shaped recording medium, so that the support protrusions are separated from the position regulating ramp located outside the disk-shaped recording medium. At this time, the read / write head has floated from the disk-shaped recording medium by a predetermined amount due to the airflow generated by the rotation of the disk-shaped recording medium. No contact with media. In addition, since the direction in which the elastic member extends and the direction in which the slope of the position regulating lamp extends intersect, if the support protrusion is separated from the position regulating lamp, the position regulating lamp disappears from between the two elastic members. The position regulating lamp does not interfere with the elastic member.
[0024]
As described above, by setting the shape of the head actuator to a shape in which the elastic member is bent in the direction of the disk-shaped recording medium with respect to the arm main body, when the read / write head is positioned on the surface near the outer periphery of the disk-shaped recording medium. Since the support protrusion provided on the elastic member protrudes outside the disk-shaped recording medium, the distance between the elastic members can be regulated by a position regulating lamp provided outside the disk-shaped recording medium.
[0025]
Thus, there is no need to divide the tip of the position regulating lamp into a fork shape to cover the disk-shaped recording medium. Further, since the direction in which the elastic member extends and the direction in which the slope of the position regulating lamp extends intersect, the position regulating lamp does not interfere with the elastic member, and the shape of the position regulating lamp is less restricted. . Therefore, the position regulating lamp can be formed as a single body, and the strength can be ensured while reducing the overall thickness. Further, since the shape of the position regulating lamp is simple and there is no extremely thin portion, there is no restriction on materials and the like, so that an inexpensive and highly reliable hard disk drive can be provided.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a hard disk device of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing an example of a configuration of a main part of the hard disk device of the present embodiment, and FIG. 2 is a perspective view showing an example of the entire configuration of the hard disk device of the present embodiment. Here, in FIG. 2, a cover (not shown) is removed to explain the internal structure of the hard disk device.
[0027]
The hard disk drive 1 according to the present embodiment includes a read / write head 3 for recording / reproducing information on a disk 2 as a recording medium, a suspension 4 as an elastic member for supporting the read / write head 3 on a distal end side, and the suspension 4 A head actuator 6 including an arm body 5 to be fixed is provided.
[0028]
Also, at the time of unloading when the read / write head 3 retreats from the surface of the disk 2 to the outside of the disk 2, and at the time of loading when the read / write head 3 lands from the outside of the disk 2 onto the surface of the disk 2, A position regulating lamp 7 for regulating the position is provided. The head actuator 6 is bent so that the tip of the position regulating lamp 7 has a simple shape.
[0029]
The head actuator 6 is attached such that the arm main body 5 is rotatable with respect to the housing 9 around the pivot 8. The head actuator 6 is rotatably driven by a voice coil motor 10 as a rotation drive unit provided on the opposite side of the pivot 8 from the suspension 4. Further, the supply of electric power to the head actuator 6 and the exchange of signals with the read / write head 3 are performed via a flexible printed circuit board 11 fixed to the arm body 5.
[0030]
The head actuator 6 is attached at a predetermined angle so that the suspension 4 faces the disk 2 with respect to the direction in which the arm body 5 extends, so that the head actuator 6 is bent in a “<” shape when viewed from above. is there.
[0031]
Further, a lift tab 12 which is a support projection is provided on the suspension 4 at a position closer to the root side than the mounting position of the read / write head 3. The lift tab 12 is a hemispherical projection, and is formed by press working because the suspension 4 is made of stainless steel. The lift tab 12 is provided on the center line in the direction in which the suspension 4 extends.
[0032]
The position regulating ramp 7 has a slope along the movement path of the lift tab 12 due to the rotation of the head actuator 6. The position control lamp 7 is a molded plastic product and is attached to the housing 9. When the read / write head 3 moves between the surface of the disk 2 and the outside of the disk 2 by the rotation of the head actuator 6 due to the loading or unloading of the read / write head 3, the lift tab 12 is moved to the position regulating ramp. 7, the position of the read / write head 3 is regulated.
[0033]
Here, by forming the head actuator 6 in a shape bent in a “<” shape, the suspension when the head actuator 6 rotates until the read / write head 3 is located near the outer periphery of the disk 2 as shown in FIG. The leading end supporting the read / write head 3 is located on the disk 2, but the lift tab 12 located at the base is located outside the disk 2.
[0034]
Thus, during unloading in which the read / write head 3 is retracted from the surface of the disk 2 to the outside of the disk 2 and load in which the read / write head 3 is landed from the outside of the disk 2 onto the disk 2, The read / write head 3 can be guided by bringing the lift tab 12 into contact with the disposed position regulating lamp 7.
[0035]
3A and 3B are explanatory views showing an example of a configuration of a main part of the position regulating lamp 7. FIG. 3A is a sectional view taken along line YY of FIG. 1, and FIG. 3B is a sectional view taken along line XX of FIG. In order to support the read / write heads 3 on both sides of the disk 2, two suspensions 4 are attached to the head actuator 6 at predetermined intervals.
[0036]
The mounting structure of the suspension 4 to the arm body 5 will be briefly described with reference to FIG. 3A. A base plate 4a is integrally mounted on the rear end side of the suspension 4 by spot welding or the like. The base plate 4a is provided with a boss 4b for fixing. The boss 4b is a cylindrical protrusion, and protrudes to the side where the read / write head 3 is provided.
[0037]
A hole 5a for attaching a boss 4b of a base plate 4a integrated with the suspension 4 is provided on the distal end side of the arm body 5. The hole 5a penetrates from the upper surface to the lower surface of the arm body 5, and has a diameter substantially equal to the outer diameter of the boss 4b.
[0038]
Then, one suspension 4 inserts the boss 4b from the upper end of the hole 5a, and the other suspension 4 inserts the boss 4b from the lower end of the hole 5a and crimps the tip of each boss 4b. The two suspensions 4 are fixed so as to sandwich the arm body 5 from above and below.
[0039]
The lift tabs 12 are provided on the respective suspensions 4 and are opposed to each other by protruding inward. As shown in FIG. 1, the head actuator 6 is bent in a “<” shape, and the lift tab 12 is provided on the root side of the suspension 4, so that the head actuator 6 is rotated to place the read / write head 3 on the surface of the disk 2. The lift tab 12 of each suspension 4 can be located outside the disk 2 when it is located near the outer periphery of the disk 2. Thereby, even if the position regulating ramp 7 is disposed outside the disk 2, the lift tab 12 of each suspension 4 is brought into contact with the slope 7 a of the position regulating ramp 7 before the read / write head 3 moves outside the disk 2. Can be.
[0040]
Therefore, as shown in FIG. 3B, the shape of the tip of the position regulating lamp 7 is changed between the slope 7a located on one surface of the disk 2 and the slope 7a located on the other surface of the disk 2. The disk 2 can be formed into an integral wedge shape, and it is not necessary to form a fork that covers both surfaces of the disk 2 as in the related art. Although not shown in FIG. 3, a mechanism for attaching to the housing 9 shown in FIG.
[0041]
When the read / write head 3 is loaded or unloaded, the head actuator 6 rotates to slide the lift tab 12 and the position regulating lamp 7, so that the surface of the lift tab 12 is mirror-finished. Here, in order to make the lift tab 12 mirror-finished, a mold (not shown) used for press working is mirror-finished, and the lift tab 12 to be formed is mirror-finished.
[0042]
By the way, if the bending angle of the head actuator 6 shown in FIG. 1 is around 90 ° as shown in Patent Document 1, the trajectory of the suspension 4 when the head actuator 6 rotates follows the extending direction of the suspension 4 itself. It will be. For this reason, it is necessary that the shape of the position regulating lamp 7 also extends in a direction parallel to the direction in which the suspension 4 extends. However, if the position regulating ramp 7 has a shape extending in a direction parallel to the extending direction of the suspension 4, the lift tab 12 is moved while the read / write head 3 is moved from the outside of the disc 2 to the surface of the disc 2. Even after leaving the position regulating lamp 7, the position regulating lamp 7 is still inserted between the two suspensions 4, so that the position regulating lamp 7 may interfere with the suspension 4. For this reason, the shape and thickness of the position regulating lamp 7 are restricted.
[0043]
On the other hand, in the hard disk drive 1 of the present embodiment, the bending angle of the head actuator 6 is set to an obtuse angle of 90 ° or more (about 105 ° in this example). Thereby, as shown in FIG. 1, the extending direction of the slope 7 a of the position regulating lamp 7 can intersect the extending direction of the suspension 4 at a certain angle. Therefore, as shown in FIG. 3, the entire position regulating lamp 7 does not enter between the two suspensions 4, and the position regulating lamp 7 does not interfere with the suspension 4.
[0044]
Therefore, as shown in FIG. 3B, even if the thickness of the position regulating lamp 7 is increased, only the lift tab 12 contacts the position regulating lamp 7 with the suspension 4, and the suspension of the position regulating lamp 7 4 Interference with the main body can be prevented.
[0045]
Although the thickness of the position regulating lamp 7 is also restricted by the thickness of the housing 9 shown in FIG. 2, the position is adjusted by adjusting the bending angle of the head actuator 6, the position of the position regulating lamp 7 and the lift tab 12, and the like. It is possible to make the thickness of the tip of the regulating lamp 7 thicker than the thickness of the disk 2.
[0046]
Next, the operation of the above-described hard disk device 1 will be described. 4 and 5 are plan views showing an operation example of the hard disk device 1 according to the present embodiment. FIG. 4A shows a state in which the read / write head 3 is retracted from the surface of the disk 2, and FIG. () Shows a state where the read / write head 3 is on the surface of the disk 2 and the lift tab 12 is in contact with the position regulating lamp 7. FIG. 5A shows a state in which the read / write head 3 is on the surface of the disk 2 and the lift tab 12 is separated from the position regulating lamp 7, and FIG. This shows a state where the robot is moved to the circumference.
[0047]
In the dynamic load / unload type hard disk drive 1, when information is not read or written, the read / write head 3 is retracted to the outside of the disk 2 as shown in FIG. At this time, the lift tabs 12 provided on the suspension 4 of the head actuator 6 ride on the slopes 7a of the position regulating ramps 7, respectively, to prevent the suspension 4 from being displaced due to vibration or the like, thereby preventing the read / write heads 3 from coming into contact with each other. I have.
[0048]
When reading or writing information, the head actuator 6 is rotated in the direction of arrow b by the voice coil motor 10 while the disk 2 is rotated in the direction of arrow a by a spindle motor (not shown). As the head actuator 6 rotates in the direction of the arrow b, the lift tab 12 moves down the slope 7 a of the position regulating lamp 7. As shown in FIG. 4 (b), even if the head actuator 6 is rotated until the read / write head 3 is positioned on the surface near the outermost periphery of the disk 2, the lift tab 12 is still outside the disk 2 and the position is restricted. The contact with the ramp 7a of the ramp 7 prevents the read / write head 3 from contacting the disk 2, and the ramp 7a has a gentle slope, so that the head can smoothly land on the surface of the disk 2. .
[0049]
Then, when the read / write head 3 is positioned on the surface of the disk 2, the read / write head 3 flies to a predetermined height from the surface of the disk 2 due to the airflow generated by the rotation of the disk 2. For this reason, when the head actuator 6 is further rotated in the direction of arrow b from the state shown in FIG. 4B, the lift tab 12 is separated from the position regulating lamp 7 as shown in FIG. The read / write head 3 floats above the surface of the disk 2 due to the airflow generated by the air flow, and the read / write head 3 does not contact the disk 2.
[0050]
Then, while rotating the disk 2 in the direction of arrow a, the head actuator 6 is rotated between the position shown in FIG. 5A and the position shown in FIG. To write or read information.
[0051]
When the reading or writing of the information is completed, the head actuator 6 is rotated in the direction of arrow c while the rotation of the disk 2 in the direction of arrow a is continued. When the head actuator 6 rotates in the direction of arrow c, as shown in FIG. 4B, when the read / write head 3 reaches a surface near the outer periphery of the disk 2, the lift tab 12 moves on the surface of the disk 2. From the disk 2 to the outside of the disk 2. Then, the lift tab 12 comes into contact with the slope 7 a of the position regulating lamp 7.
[0052]
Here, since the inclination of the slope 7a of the position regulating lamp 7 is gentle as shown in FIG. 3B, the rotation of the head actuator 6 in the direction of the arrow c can be performed without applying a load to the rotation of the head actuator 6. 12 rides on the slope 7a. Thus, when the read / write head 3 moves from the surface of the disk 2 to the outside of the disk 2, the read / write head 3 does not descend and come into contact with the disk 2.
[0053]
Then, when the head actuator 6 rotates in the direction of arrow c and the read / write head 3 moves from the surface of the disk 2 to the outside of the disk 2 as shown in FIG. When the lift tab 12 rides on, the interval between the two suspensions 4 is regulated, and the contact between the read / write heads 3 is prevented.
[0054]
Now, since the lift tab 12 is provided on the center line in the direction in which the suspension 4 extends, a force for twisting the suspension 4 is generated when the lift tab 12 rides on the position regulating ramp 7 and when the lift tab 12 separates from the position regulating ramp 7. Without this, it is possible to load and unload the read / write head 3 in a stable posture.
[0055]
As described above, in the hard disk drive 1 of the present embodiment, since the head actuator 6 is bent in the shape of a "<", the position regulating lamp 7 for loading / unloading the read / write head 3 is moved to the disk 2. Outside. For this reason, the shape of the tip of the position control lamp 7 can be made into a simple wedge shape, and the manufacture of the position control lamp 7 is facilitated, the yield is improved, and the strength of the position control lamp 7 is improved. As a result, a highly reliable and inexpensive hard disk drive 1 can be provided.
[0056]
Here, the hard disk device 1 shown in FIG. 2 is a so-called fixed type hard disk device in which the disk 2 is not detachable, but the present invention can also be applied to a removable type hard disk device. FIG. 6 is a plan view showing a configuration example of a hard disk device according to another embodiment. An outline of a removable hard disk device will be described below.
[0057]
The hard disk device 21 stores the disk 2 in a disk cartridge 22 and is detachable from the device main body. The disk cartridge 22 has a thin box shape and has an opening 23 on one side. The opening 23 is provided with an openable and closable shutter 24. When the disk cartridge 22 is detached from the hard disk drive 21, the shutter 24 closes the opening 23 to protect the disk 2 in the disk cartridge 22. I do.
[0058]
The hard disk drive 21 includes a mechanism (not shown) for detachably mounting the disk cartridge 22, a spindle motor for rotating the disk 2 in the disk cartridge 22, and the like.
[0059]
The configurations of the head actuator 6 and the position regulating lamp 7 are the same as those described with reference to FIGS. 1 to 3, and the head actuator 6 is attached so that the arm main body 5 can rotate around the pivot 8. The head actuator 6 is driven to rotate by a voice coil motor 10 provided on the opposite side to the suspension 4 with the pivot 8 interposed therebetween.
[0060]
The head actuator 6 is attached at a predetermined angle so that the suspension 4 faces the disk 2 with respect to the direction in which the arm body 5 extends, so that the head actuator 6 is bent in a “<” shape when viewed from above. is there. The portion of the suspension 4 of the head actuator 6 enters through the opening 23 of the disk cartridge 22.
[0061]
The read / write head 3 is supported on the tip side of the suspension 4, and a lift tab 12 is provided on the base side from the mounting position of the read / write head 3. Then, a position regulating lamp 7 having a slope 7a extending along the locus of the lift tab 12 due to the rotation of the head actuator 6 is provided on the apparatus main body side.
[0062]
The operation of the above-mentioned removable hard disk device 21 is also the same as that described with reference to FIGS. 4 and 5, and when not reading or writing information, the head actuator 6 is rotated to move the read / write head 3 to the outside of the disk 2. Evacuate. At this time, since the head actuator 6 has a bent shape, the lift tab 12 protrudes outside the disk 2 with the read / write head 3 positioned on a surface near the outer periphery of the disk 2, and the disk cartridge 22 The read / write head 3 can be guided at the time of unloading by the position regulating lamp 7 arranged outside. During loading, with the read / write head 3 reaching the surface near the outer periphery of the disk 2, the lift tab 12 is located outside the disk 2, and the position of the read / write head 3 is controlled by the position regulating lamp 7 disposed outside the disk cartridge 22. Guidance can be provided.
[0063]
In the removable hard disk drive 21, when the head actuator 6 has a bent shape, the width of the opening 23 of the disk cartridge 22 can be reduced, so that dust resistance can be improved.
[0064]
【The invention's effect】
As described above, according to the present invention, two plate-like elastic members are attached at an interval to the distal end side of an arm body having a rotation drive unit, and a read / write head is supported at the distal end of each elastic member. In a hard disk drive having a head actuator in which read / write heads are arranged on both sides of a single disk-shaped recording medium that is driven to rotate, the head actuator moves each elastic member with respect to the arm body in the direction of the disk-shaped recording medium. The shape is bent. In addition, each elastic member has a support protrusion closer to the base side than the portion supporting the read / write head. The support protrusion extending along the locus of the support protrusion due to the rotation of the head actuator is provided on one surface side of the disk-shaped recording medium and provided on one of the two elastic members. A position regulating ramp provided integrally on the outside of the disk-shaped recording medium, with a slope formed on the other surface side of the disk-shaped recording medium and a slope contacted by a support projection provided on the other elastic member. The bending angle of the head actuator is set so that the direction in which the elastic member extends and the direction in which the slope of the position regulating lamp extends intersect.
[0065]
With this, when the read / write head is positioned on the surface near the outer periphery of the disk-shaped recording medium, the support protrusion provided on the elastic member protrudes outside the disk-shaped recording medium. The distance between the elastic members can be regulated by the position regulating lamp.
[0066]
Therefore, it is not necessary to divide the tip of the position regulating lamp into a fork shape so as to cover the disk recording medium. Further, since the direction in which the elastic member extends and the direction in which the slope of the position regulating lamp extends intersect, the position regulating lamp does not interfere with the elastic member, and the shape of the position regulating lamp is less restricted. . Therefore, the position regulating lamp can be formed as a single body, and the strength can be ensured while reducing the overall thickness. Further, since the shape of the position regulating lamp is simple and there is no extremely thin portion, there is no restriction on materials and the like, so that an inexpensive and highly reliable hard disk drive can be provided.
[Brief description of the drawings]
FIG. 1 is a plan view illustrating a configuration example of a main part of a hard disk device according to an embodiment.
FIG. 2 is a perspective view showing an overall configuration example of a hard disk device according to the embodiment.
FIG. 3 is an explanatory diagram showing a configuration example of a main part of a position regulating lamp.
FIG. 4 is a plan view showing an operation example of the hard disk device of the embodiment.
FIG. 5 is a plan view showing an operation example of the hard disk device of the embodiment.
FIG. 6 is a plan view illustrating a configuration example of a hard disk device according to another embodiment.
FIG. 7 is a perspective view showing an overall configuration example of a conventional hard disk device.
FIG. 8 is a perspective view of an essential part showing an operation example of a conventional hard disk device.
FIG. 9 is a plan view showing a configuration example of a main part of another conventional hard disk device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Hard disk drive, 2 ... Disk, 3 ... Read / write head, 4 ... Suspension, 5 ... Arm main body, 6 ... Head actuator, 7 ... Position regulation lamp, 8 ... ..Pivot, 9 housing, 10 voice coil motor, 11 flexible printed circuit board, 12 lift tab, 21 hard disk drive, 22 disk cartridge, 23 .Opening, 24 ... Shutter

Claims (6)

Two disc-shaped elastic members are attached at an interval to the tip side of an arm body having a rotation drive unit, and a read / write head is supported at the tip end of each of the elastic members, and one disk is driven to rotate. A hard disk drive comprising a head actuator in which the read / write heads are arranged on both sides of a linear recording medium,
The head actuator has a shape in which each of the elastic members is bent toward the disk-shaped recording medium with respect to the arm body,
Each of the elastic members has a support protrusion closer to the base side than a portion supporting the read / write head,
A support protrusion that extends along a locus of the support protrusion due to the rotation of the head actuator and is provided on one of the two elastic members on one surface of the disk-shaped recording medium; A position regulation in which a slope contacting with the other surface of the disc-shaped recording medium and a slope contacting with a support protrusion provided on the other elastic member are integrally provided outside the disc-shaped recording medium. Equipped with a lamp,
The bending angle of the head actuator is set so that the direction in which the elastic member extends and the direction in which the slope of the position regulating lamp extends intersect. The hard disk drive according to claim 1, wherein the support protrusion is provided on a center line in a direction in which the elastic member extends. 2. The hard disk drive according to claim 1, wherein the thickness of the tip of the position regulating ramp is equal to or greater than the thickness of the disc-shaped recording medium. 2. The hard disk drive according to claim 1, wherein the surface roughness of the support protrusion has a mirror-like smoothness. 2. The hard disk drive according to claim 1, wherein the disk-shaped recording medium is irremovably attached to the apparatus main body. 2. The hard disk drive according to claim 1, wherein the disk-shaped recording medium is housed in a cartridge and is detachable from the apparatus main body.

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