JP3688807B2 - Magnetic disk unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disk, a magnetic head that reads / writes data from / to the disk, a slider on which the magnetic head is mounted, a magnetic head support that supports the slider, and a magnetic head support. The present invention relates to a magnetic disk device including an actuator to be moved.
[0002]
[Prior art]
With the increase in speed, size, and reliability of magnetic disk devices, sliders equipped with magnetic heads have been reduced in size. By reducing the size of the slider, the inertia of the magnetic head assembly can be reduced. As a result, the magnetic head assembly can be seeked more quickly, and high-speed data access can be realized.
[0003]
In order to seek the magnetic head assembly at high speed, not only miniaturization of the slider but also a structure with a high resonance frequency in the seek direction as a magnetic head support (spring arm) that supports the slider on which the magnetic head is mounted Is required.
[0004]
In addition, this magnetic head support must keep the minute gap between the slider and the disk substantially constant when the disk rotates, and the variation in spring load (force that presses the slider toward the disk) is small. Required.
[0005]
A magnetic head support devised for the purpose of meeting the above requirements is shown in FIGS. In these drawings, a magnetic head support 1 includes a slider support portion 11 that supports a slider 2 on which a magnetic head is mounted, and a rib forming portion in which ribs 12a are formed to increase rigidity (the length L1 portion in FIG. 24). ) 12, a spring portion (length L2 portion in FIG. 24) 13 adjacent to the rib forming portion 12, and a fixing portion 14 adjacent to the spring portion 13 and fixed to the spacer 3. Since the spring portion 13 is subjected to bending for pressing the slider 2 against the disk, a curved portion 13a is formed.
[0006]
In a free state where the slider 2 is not pressed from the disk side (upper side in FIG. 24), the magnetic head support 1 maintains the posture in which the slider 2 is inclined toward the disk side, as shown in FIG. In the pressed load state, as shown in FIG. 25, the rib forming portion 12 is pushed back to a substantially horizontal position.
[0007]
Thereby, the spring part 13 is bent and the elastic force which presses the slider 2 to the disk side arises. Accordingly, the spring load is controlled by the degree of bending of the spring portion 13 (curved portion 13a).
[0008]
The slider support portion 11 of the magnetic head support 1 is provided at the tip of the magnetic head support 1. In the above configuration example, the slider support portion 11 is interposed via a low-rigid gimbal spring 11 a formed integrally with the magnetic head support 1. The magnetic head support 1 is connected to the main body side. Further, the fixing portion 14 of the magnetic head support 1 is fixed to the spacer 3 by spot welding, and this spacer 3 is fixed to the head arm of the actuator.
[0009]
[Problems to be solved by the invention]
When the curved portion 13a is formed by bending the spring portion 13, the curved portion 13a of the spring portion 13 protrudes downward as shown in FIG. This is because when the load state is changed from the free state, the curved portion 13a does not deform so much, and the deformation of the non-curved portion becomes dominant.
[0010]
If this overhang exists between the slider support portion 11 and the fixing portion 14, when the vibration is applied in the seek direction, the gain of the primary twist is increased, and the resonance frequency (in-plane mode) in the seek direction is further reduced. End up.
[0011]
Therefore, in the above configuration, in order to reduce the primary torsion gain and increase the resonance frequency of the in-plane mode, the amount of protrusion of the curved portion 13a in the load state is made as small as possible, and the spring portion 13 is made as flat as possible. There is a need to.
[0012]
Further, the bending process for forming the curved portion 13a in the spring part 13 is troublesome, and it is particularly difficult to perform a uniform bending process on the spring part 13 so that a stable and constant pressing force is generated.
[0013]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a magnetic disk device capable of reducing the primary torsional gain of the magnetic head support and increasing the resonance frequency of the in-plane mode. An object of the present invention is to realize a magnetic disk drive that can easily produce a magnetic head support and can generate a stable pressing force on the magnetic head support in a loaded state.
[0014]
[Means for Solving the Problems]
The present invention that solves the above-described problems includes a disk, a magnetic head that reads / writes data from / to the disk, a slider on which the magnetic head is mounted, a magnetic head support that supports the slider, In the magnetic disk drive including an actuator for moving the magnetic head support, the magnetic head support includes a slider support for supporting the slider, a rib forming portion on which ribs are formed to increase rigidity, and A spring part adjacent to the rib forming part and not subjected to bending for pressing the slider against the disk; and a fixing part adjacent to the spring part and fixed to the spacer; The fixed surface of the spacer to which the fixing part of the magnetic head support is fixed is a plane substantially parallel to the disk, and the rib forming part includes a protrusion protruding toward the spacer. And the magnetic head support is In the free state, The protrusion of the rib forming part is pushed by the spacer, The rib forming portion is maintained in a posture in which the slider is inclined toward the disk and in a loaded state. When the slider is pushed back in the direction in which there is no inclination The spring portion is curved to generate an elastic force that presses the slider toward the disk.
[0015]
Here, as described above, the free state means a state where the slider is not pressed from the disk side, and the load state means a state where the slider is pressed from the disk side.
[0016]
In the magnetic disk device having the above configuration, in the loaded state, the highly rigid rib forming portion and the spacer press against each other. For this reason, in the magnetic head support, the movement of the highly rigid rib forming portion is directly restrained by the spacer, and even if the in-plane rigidity is increased and vibration is applied in the seek direction, the rib forming portion or There is no significant change in behavior in the slider support. As a result, it is possible to follow a high-speed seek.
[0017]
In addition, since it is not necessary to form a curved portion in the spring portion of the magnetic head support, the manufacture of the magnetic head support is facilitated. Furthermore, since it is possible to avoid uneven pressing force in the loaded state of the magnetic head support due to variations in the degree of bending of the curved portion, it is possible to generate a stable pressing force on the magnetic head support in the loaded state. it can.
[0018]
In a free state, the magnetic head support body maintains the posture in which the slider is inclined toward the disk side. Therefore, in the present invention The fixing surface of the spacer to which the fixing part of the magnetic head support is fixed is a plane substantially parallel to the disk, and the protrusion is formed on the rib forming part of the magnetic head support. Provided integrally with the rib forming part The In this case, the contact surface (spaced adherence) surface) Even if the flatness is low, a stable restraining force can be obtained.
[0021]
Up Writing As an example of the origin, Rib forming part of magnetic head support A plurality of protrusions formed side by side in a direction perpendicular to the longitudinal direction of the magnetic head support Is . In this case, if the protrusions are integrally provided on the rib forming portion of the magnetic head support by press molding or the like, the protrusions can be easily formed.
[0023]
As another example of the protrusion, there is a bent portion that is bent toward the fixed surface of the spacer in the rib forming portion of the magnetic head support. . In this case, the bent portion can be easily formed in the rib forming portion by press molding or the like. Moreover, a big spring load can be obtained by lengthening a bending part. Furthermore, according to press molding, the position of the bent portion in the longitudinal direction of the magnetic head support can also be set accurately.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
There are a variety of embodiments of the present invention, and various modifications are possible depending on the combination of the type of the fixed surface of the spacer (with or without inclination) and the type of protrusion (including the presence or absence of the protrusion). Exists. Hereinafter, typical ones will be described with reference to the drawings.
[0026]
(First embodiment)
1 to 6 are views showing a first embodiment of the present invention, FIG. 1 is a side view showing a load state of a magnetic head support in the first embodiment, and FIG. FIG. 3 is a plan view showing the free state of the magnetic head support in the embodiment, FIG. 3 is a side view showing the free state of the magnetic head support in the first embodiment, and FIG. 4 is the first embodiment. FIG. 5 is a plan view of the magnetic disk device according to the first embodiment (with the cover removed), and FIG. 6 is a cross-sectional view taken along line AA in FIG.
[0027]
As shown in FIGS. 1 to 3, the magnetic head support 20 includes a slider support portion 21 that supports a slider 40 on which the magnetic head is mounted, and a rib forming portion in which ribs 22 a are formed on the side portions to increase rigidity. (Length L1 portion in FIG. 3) 22, a spring portion (length L2 portion in FIG. 3) 23 adjacent to the rib forming portion 22, and a fixing portion adjacent to the spring portion 23 and fixed to the spacer 30 24.
[0028]
The slider support portion 21 is provided at the tip of the magnetic head support 20. In this embodiment, the main body of the magnetic head support 20 is interposed via a low-rigid gimbal spring 21 a formed integrally with the magnetic head support 20. Connected to the side.
[0029]
Two protrusions (projections) 22 b and 22 c that are arranged in a direction perpendicular to the longitudinal direction of the magnetic head support 20 and protrude toward the spacer 30 are provided at positions near the spring portion 23 in the rib forming portion 22. ing. In order to increase the restraining force against torsion about the longitudinal axis of the magnetic head support 20, the distance between the protrusions 22b and 22c is selected as large as possible. In order to obtain a stable restraining force, it is preferable to use two protrusions as in this embodiment.
[0030]
In the present invention, the spring portion 23 is not subjected to bending for pressing the slider 40 against the disk.
The fixed surface 30a of the spacer 30 to which the fixing portion 24 of the magnetic head support 20 is fixed is a plane substantially parallel to the disk. And the front-end | tip part of the to-be-adhered surface 30a is extended to the rib formation part 22, and the front-end | tip parts of protrusion 22b, 22c contact | abut to this front-end | tip part.
[0031]
Further, in this embodiment, the fixing portion 24 of the magnetic head support 20 is welded to the fixed surface 30a of the spacer 30 by spot welding (the welding location is indicated by a black dot in FIG. 2). Fixed to the head arm.
[0032]
In a free state where the slider 40 is not pressed from the disk side (upper side in FIG. 3), the magnetic head support 20 maintains the posture in which the slider 40 is inclined toward the disk side as shown in FIG.
[0033]
On the other hand, in the loaded state in which the slider 40 is pressed from the disk side, as shown in FIG. 1, the rib forming portion 22 is pushed back to a substantially horizontal position. Thereby, the spring part 23 is bent and the elastic force which presses the slider 40 to a disk side arises. Accordingly, the spring load is controlled by the height of the protrusions 22b and 22c.
[0034]
As shown in FIG. 4, on the surface of the slider 40 facing the disk, levitation force generating rails 41 and 42 are provided along the direction of airflow generated by the rotation of the disk. Inclined surfaces 41 a and 42 a are formed on the air inflow side portions of the air bearing surfaces of the rails 41 and 42. A magnetic head 45 is provided on the rear end surface of the rail 42 in the slider 40.
[0035]
As shown in FIGS. 5 and 6, the disk (three in this embodiment) 50 is rotationally driven by a spindle motor 52 provided on a base plate 51. A plurality of head arms 54 extending in the disk surface direction are formed at one rotation end of an actuator 53 that is rotatably provided on the base plate 51. The spacer 30 described above is attached to the rotating end of the head arm 54. On the other hand, a coil 57 is provided at the other rotation end of the actuator 53.
[0036]
A magnetic circuit 58 composed of a magnet and a yoke is provided on the base plate 51, and the coil 57 is disposed in the magnetic gap of the magnetic circuit 58. The magnetic circuit 58 and the coil 57 constitute a moving coil type linear motor (VCM: voice coil motor). The upper part of the base plate 51 is covered with a cover 59.
[0037]
Next, the operation of the magnetic disk drive having the above configuration will be described. When the disk 50 is stopped, the slider 40 comes into contact with the retreat zone of the disk 50 and stops. In this state, when the disk 50 is rotationally driven by the spindle motor 52 at a high speed, the slider 40 floats from the disk surface with a minute interval by the air flow generated by the rotation of the disk 50.
[0038]
When a current is passed through the coil 57 in this floating state, a thrust is generated in the coil 57 and the actuator 53 swings. Therefore, the magnetic head (slider 40) is moved onto a desired track of the disk 50, and the data is recorded. Read / write can be performed.
[0039]
According to the magnetic disk device, in the loaded state, the protrusions 22b and 22c of the highly rigid rib forming portion 22 and the spacer 30 are pressed against each other. For this reason, the magnetic head support 20 directly restrains the movement of the rib forming portion 22 having high rigidity by the spacer 30, and even if the in-plane rigidity is increased and the vibration is applied in the seek direction, A large change in behavior does not appear in the formation part 22 or the slider support part 21. As a result, it is possible to follow a high-speed seek.
[0040]
Further, since it is not necessary to form a curved portion in the spring portion 23 of the magnetic head support 20, the manufacture of the magnetic head support 20 is facilitated. Further, since the spring portion 23 is not bent, unevenness of the pressing force in the loaded state of the magnetic head support 20 due to variations in the degree of bending of the curved portion can be avoided. For this reason, a stable pressing force can be generated on the magnetic head support 20 in the loaded state.
[0041]
Further, in this configuration, since the protrusions 22b and 22c are integrally provided on the rib forming portion 22 of the magnetic head support 20 by press molding or the like, the formation of the protrusions 22b and 22c is easy.
[0042]
(Second embodiment)
FIGS. 7 and 8 are views showing the main part of the second embodiment of the present invention, FIG. 7 is a side view showing the loading state of the magnetic head support in the second embodiment, and FIG. It is a top view which shows the loading state of the magnetic head support body in the 2nd Example.
[0043]
The difference between the present embodiment and the first embodiment is that a protrusion is provided on the spacer 30 side. That is, the tip of the fixed surface 30 a of the spacer 30 extends to the rib forming portion 22, which is aligned in the direction perpendicular to the longitudinal direction of the magnetic head support 20 and protrudes toward the rib forming portion 22. The two protrusions 30b and 30c are provided. And the front-end | tip part of these processus | protrusions 30b and 30c contacts the rib formation part 22. FIG.
[0044]
According to the magnetic disk device, in the loaded state, the highly rigid rib forming portion 22 and the protrusions 30b and 30c of the spacer 30 are pressed against each other. For this reason, the magnetic head support 20 is directly restrained by the spacer 30 with respect to the movement of the highly rigid rib forming portion 22, and even if the in-plane rigidity is increased and the vibration is applied in the seek direction, A large change in behavior does not appear in the formation part 22 or the slider support part 21. As a result, it is possible to follow a high-speed seek.
[0045]
Further, since it is not necessary to form a curved portion in the spring portion 23 of the magnetic head support 20, the manufacture of the magnetic head support 20 is facilitated. Further, since the spring portion 23 is not bent, unevenness of the pressing force in the loaded state of the magnetic head support 20 due to variations in the degree of bending of the curved portion can be avoided. For this reason, a stable pressing force can be generated on the magnetic head support 20 in the loaded state.
[0046]
(Third embodiment)
FIG. 9 and FIG. 10 are views showing the main part of the third embodiment of the present invention, FIG. 9 is a side view showing the loading state of the magnetic head support in the third embodiment, and FIG. It is a top view which shows the loading state of the magnetic head support body in the example of 3rd Embodiment.
[0047]
The difference between this embodiment and the first embodiment is that wire rods (cross section is circular) 60b and 60c are provided on the spacer 30 as protrusions. In other words, the tip of the fixed surface 30 a of the spacer 30 extends to the rib forming portion 22, and two tips arranged coaxially toward the tip perpendicular to the longitudinal direction of the magnetic head support 20. Wires 60b and 60c are fixed. The outer peripheral surfaces of the wires 60b and 60c are in contact with the rib forming portion 22.
[0048]
According to the magnetic disk device, in a loaded state, the highly rigid rib forming portion 22 and the spacer 30 are pressed against each other via the wire members 60b and 60c. For this reason, in the magnetic head support 20, the movement of the highly rigid rib forming portion 22 is restrained by the spacer 30, and even if the in-plane rigidity is increased and the vibration is applied in the seek direction, the rib forming portion 22 is increased. In addition, no significant behavioral change appears in the slider support portion 21. As a result, it is possible to follow a high-speed seek.
[0049]
Further, similarly to the first embodiment, since it is not necessary to form a curved portion in the spring portion 23 of the magnetic head support 20, the manufacture of the magnetic head support 20 is facilitated. Further, since the spring portion 23 is not bent, unevenness of the pressing force in the loaded state of the magnetic head support 20 due to variations in the degree of bending of the curved portion can be avoided. For this reason, a stable pressing force can be generated on the magnetic head support 20 in the loaded state.
[0050]
In addition, in the case of this configuration, if the flatness of the contact surface on the rib forming portion 22 side is high, restraint by line contact is obtained, so that a reliable restraining force can be obtained. Here, the number of the wire as the protrusion may be one, or may be three or more. Further, the fixing may be on the rib forming portion 22 side.
[0051]
(Fourth embodiment)
FIGS. 11 and 12 are views showing the main part of the fourth embodiment of the present invention, FIG. 11 is a side view showing the loading state of the magnetic head support in the fourth embodiment, and FIG. It is a top view which shows the loading state of the magnetic head support body in the example of 4th Embodiment.
[0052]
The difference between this embodiment and the first embodiment is that a bent portion 22d is provided in the rib forming portion 22 as a protrusion. That is, the bent portion 22d is provided toward the tip end portion extending to the rib forming portion 22 of the fixed surface 30a of the spacer 30 and so as to be in a positional relationship orthogonal to the longitudinal direction of the magnetic head support 20. Yes. The bent portion 22 d comes into contact with the spacer 30.
[0053]
According to the magnetic disk device, the bent portion 22d of the rib forming portion 22 having high rigidity and the spacer 30 are pressed against each other in the loaded state. For this reason, in the magnetic head support 20, the movement of the highly rigid rib forming portion 22 is restrained by the spacer 30, and even if the in-plane rigidity is increased and the vibration is applied in the seek direction, the rib forming portion 22 is increased. In addition, no significant behavioral change appears in the slider support portion 21. As a result, it is possible to follow a high-speed seek.
[0054]
Further, similarly to the first embodiment, since it is not necessary to form a curved portion in the spring portion 23 of the magnetic head support 20, the manufacture of the magnetic head support 20 is facilitated. Further, since the spring portion 23 is not bent, unevenness of the pressing force in the loaded state of the magnetic head support 20 due to variations in the degree of bending of the curved portion can be avoided. For this reason, a stable pressing force can be generated on the magnetic head support 20 in the loaded state.
[0055]
In addition, in this configuration, the bent portion 22d can be easily formed in the rib forming portion 22 by press molding or the like. Moreover, a large spring load can be obtained by lengthening the bent portion 22d. Furthermore, if press molding or the like is used, the position of the bent portion 22d in the longitudinal direction of the magnetic head support 20 can be accurately set. If the strength permits, a plurality of bent portions 22d can be provided.
[0056]
(Fifth embodiment)
FIGS. 13 to 15 are views showing a fifth embodiment of the present invention, FIG. 13 is a side view showing a load state of a magnetic head support in the fifth embodiment, and FIG. 14 is a fifth embodiment. FIG. 15 is a side view showing the free state of the magnetic head support in the fifth embodiment, and FIG. 15 is a plan view showing the free state of the magnetic head support in the embodiment.
[0057]
The difference between this embodiment and the first embodiment is that there is no protrusion, and the surface 30a to be fixed of the spacer 30 is inclined with respect to the disk, and the attitude of the magnetic head support 20 in the free state Is that the slider 40 is inclined to the disk side. In this configuration, the inclined fixed surface 30 a of the spacer 30 extends to the rib forming portion 22. Further, the shape of the outer edge of the leading edge EG of the fixed surface 30a of the spacer 30 is substantially a straight line (vertical line in FIG. 14).
[0058]
In this magnetic disk apparatus, in the free state of FIG. 15, the spring portion 23 and the fixing portion 24 overlap the fixed surface 30 a of the spacer 30, and the magnetic head support 20 is substantially the same as the fixed surface 30 a of the spacer 30. Have the same tilt angle.
[0059]
On the other hand, in the loaded state in which the slider 40 is pressed from the disk side, as shown in FIG. 13, the rib forming portion 22 is pushed back to a substantially horizontal position. Thereby, the spring part 23 is bent and the elastic force which presses the slider 40 to a disk side arises. Accordingly, the spring load is controlled by the inclination angle of the fixed surface 30a of the spacer 30 and the position of the leading edge EG.
[0060]
According to this configuration, when the load state is reached, the highly rigid rib forming portion 22 and the leading edge EG of the spacer 30 are pressed against each other. For this reason, in the magnetic head support 20, the movement of the highly rigid rib forming portion 22 is restrained by the spacer 30, and even if the in-plane rigidity is increased and the vibration is applied in the seek direction, the rib forming portion 22 is increased. In addition, no significant behavioral change appears in the slider support portion 21. As a result, it is possible to follow a high-speed seek.
[0061]
Further, similarly to the first embodiment, since it is not necessary to form a curved portion in the spring portion 23 of the magnetic head support 20, the manufacture of the magnetic head support 20 is facilitated. Further, since the spring portion 23 is not bent, unevenness of the pressing force in the loaded state of the magnetic head support 20 due to variations in the degree of bending of the curved portion can be avoided. For this reason, a stable pressing force can be generated on the magnetic head support 20 in the loaded state. In addition, in this configuration, there is no need to provide a protrusion, and the configuration is simplified.
[0062]
(Sixth embodiment)
FIGS. 16 to 17 are views showing a sixth embodiment of the present invention, FIG. 16 is a side view showing a loading state of a magnetic head support in the sixth embodiment, and FIG. It is a top view which shows the loading state of the magnetic head support body in the embodiment.
[0063]
The difference between this embodiment and the fifth embodiment is that the shape of the outer edge of the tip edge EG of the fixed surface 30a of the spacer 30 is substantially arcuate (there is a dent in the center in FIG. 17). It is a point.
[0064]
According to this configuration, in addition to the effects of the fifth embodiment, the corner portions 30d and 30e of the leading edge EG of the fixed surface 30a of the spacer 30 are in contact with the rib forming portion 22 of the magnetic head support 20 in the loaded state. Since they press each other, even if the flatness of the contact surface of the rib forming portion 22 is low, an effect that a stable restraining force can be obtained can be obtained. Note that the shape of the outer edge of the leading edge EG of the fixed surface 30a of the spacer 30 is not limited to an arc shape as long as a recess is present at the center in FIG. For example, the outer edge may be formed as a polygon.
[0065]
(Seventh embodiment)
18 to 19 are views showing a seventh embodiment of the present invention. FIG. 18 is a side view showing a loading state of a magnetic head support in the seventh embodiment. FIG. It is a top view which shows the loading state of the magnetic head support body in the embodiment.
[0066]
In this magnetic disk apparatus, the surface 30a to be fixed of the spacer 30 is inclined with respect to the disk, and the ribs 22 are provided with the protrusions 22b and 22c. Therefore, the difference between this embodiment and the first embodiment is that the surface 30a of the spacer 30 is inclined with respect to the disk, and the attitude of the magnetic head support 20 in the free state is determined by the slider 40 being the disk. This is a point that is further inclined to the side.
[0067]
In this configuration, since the amount of elastic deformation of the spring portion in the loaded state can be increased, the effect that a large spring load can be obtained in addition to the effect of the first embodiment can be obtained.
[0068]
(Other examples)
20, 21, and 22 are side views showing the loading state of the magnetic head support in the eighth, ninth, and tenth embodiments of the present invention, respectively.
[0069]
In these magnetic disk devices, the fixed surface 30a of the spacer 30 in the above-described second, third, and fourth embodiments is inclined with respect to the disk, and the attitude of the magnetic head support 20 in the free state. The slider 40 is further inclined to the disk side.
[0070]
In each configuration, as in the seventh embodiment, since the amount of elastic deformation of the spring portion in the loaded state can be increased, a large spring load can be obtained in addition to the effects of the second, third, and fourth embodiments. The effect that can be obtained.
[0071]
【The invention's effect】
As described above, according to the present invention, since the highly rigid rib forming portion and the spacer are pressed against each other in the loaded state, the magnetic head support directly moves the highly rigid rib forming portion with the spacer. Therefore, even if the in-plane rigidity is increased and the vibration is applied in the seek direction, a large behavior change does not appear in the rib forming portion or the slider support portion. As a result, it is possible to follow a high-speed seek.
[0072]
In addition, since it is not necessary to form a curved portion in the spring portion of the magnetic head support, the manufacture of the magnetic head support is facilitated. Furthermore, since it is possible to avoid non-uniform pressing force in the loaded state of the magnetic head support due to variations in the degree of bending of the curved portion, it is possible to generate a stable pressing force on the magnetic head support in the loaded state. Can do.
[0073]
Here, in the free state, in order to keep the magnetic head support in a posture in which the slider is inclined to the disk side, the fixed surface of the spacer to which the fixing portion of the magnetic head support is fixed is a plane substantially parallel to the disk. age, Rib forming part of magnetic head support Protrusion on the Because Since point contact is performed at a plurality of locations, a stable restraining force can be obtained even when the flatness of the contact surface is low.
[0076]
Protrusion is provided When As this protrusion, a protrusion is integrally provided by press molding or the like on the rib forming portion of the magnetic head support in case of The formation of protrusions is easy.
[0078]
In addition, when a bent part that is bent toward the fixed surface of the spacer is used for the rib forming part of the magnetic head support as the protrusion, the bent part can be easily formed by press molding or the like in the rib forming part. It is possible to obtain a large spring load by lengthening the bent portion. Furthermore, according to press molding or the like, the position of the bent portion in the longitudinal direction of the magnetic head support can also be set accurately.
[Brief description of the drawings]
FIG. 1 is a side view showing a load state of a magnetic head support in a first embodiment.
FIG. 2 is a plan view showing a free state of the magnetic head support in the first embodiment.
FIG. 3 is a side view showing a free state of the magnetic head support in the first embodiment.
FIG. 4 is a perspective view showing a slider in the first embodiment.
FIG. 5 is a plan view of the magnetic disk device according to the first embodiment (in a state where a cover is removed);
6 is a cross-sectional view taken along the line AA in FIG.
FIG. 7 is a side view showing a load state of a magnetic head support in a second embodiment.
FIG. 8 is a plan view showing a loaded state of a magnetic head support in a second embodiment.
FIG. 9 is a side view showing a loaded state of a magnetic head support in a third embodiment.
FIG. 10 is a plan view showing a loaded state of a magnetic head support in a third embodiment.
FIG. 11 is a side view showing a load state of a magnetic head support in a fourth embodiment.
FIG. 12 is a plan view showing a loaded state of a magnetic head support in a fourth embodiment.
FIG. 13 is a side view showing a loaded state of a magnetic head support in a fifth embodiment.
FIG. 14 is a plan view showing a free state of a magnetic head support in a fifth embodiment.
FIG. 15 is a side view showing a free state of a magnetic head support in a fifth embodiment.
FIG. 16 is a side view showing a load state of a magnetic head support in a sixth embodiment.
FIG. 17 is a plan view showing a load state of a magnetic head support in a sixth embodiment.
FIG. 18 is a side view showing a load state of a magnetic head support in a seventh embodiment.
FIG. 19 is a plan view showing a load state of a magnetic head support in a seventh embodiment.
FIG. 20 is a side view showing a loaded state of a magnetic head support in an eighth embodiment of the invention.
FIG. 21 is a side view showing a loaded state of a magnetic head support in a ninth embodiment of the invention.
FIG. 22 is a side view showing a loaded state of a magnetic head support in a tenth embodiment of the invention.
FIG. 23 is a plan view showing a free state of a magnetic head support in a conventional magnetic disk device.
FIG. 24 is a side view showing a free state of a magnetic head support in a conventional magnetic disk device.
FIG. 25 is a side view showing a loaded state of a magnetic head support in a conventional magnetic disk device.
[Explanation of symbols]
EG: Tip edge
20: Magnetic head support
21: Slider support
22: Rib forming part
22a: Rib
22b, 22c: protrusion
22d: bent portion
23: Spring part
24: Adhering part
30: Spacer
30a: surface to be bonded
30b, 30c: protrusion
30d: Corner part
40: Slider
45: Magnetic head
50: Disc
53: Actuator
54: Head arm
57: Coil
58: Magnetic circuit
60b: Wire rod

Claims (3)

A disk, a magnetic head that reads / writes data from / to the disk, a slider on which the magnetic head is mounted, a magnetic head support that supports the slider, and an actuator that moves the magnetic head support In a magnetic disk device comprising:
The magnetic head support includes a slider support portion for supporting the slider, a rib forming portion formed with ribs for increasing rigidity, and a bend for pressing the slider against the disk adjacent to the rib forming portion. A spring portion that has not been processed, and a fixing portion that is adjacent to the spring portion and is fixed to the spacer;
The fixed surface of the spacer to which the fixing part of the magnetic head support is fixed is a plane substantially parallel to the disk, and the rib forming part includes a protrusion protruding toward the spacer. And is integrated with
When the magnetic head support is in a free state, the protrusion of the rib forming portion is pushed by the spacer, and the slider maintains an inclined posture toward the disk. In the loaded state, the rib forming portion is inclined. 2. A magnetic disk device according to claim 1, wherein when the slider is pushed back in such a direction that it disappears , the spring portion is bent to generate an elastic force that presses the slider toward the disk. 2. The magnetic disk according to claim 1 , wherein a plurality of protrusions arranged in a direction perpendicular to the longitudinal direction of the magnetic head support are formed on the rib forming portion of the magnetic head support as the protrusions. apparatus. 2. The magnetic disk drive according to claim 1 , wherein a bent portion that is bent toward the surface to be fixed of the spacer is formed in the rib forming portion of the magnetic head support as the protrusion .

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