JPH03134876A - Magnetic head supporting mechanism and magnetic head device - Google Patents

Abstract

PURPOSE:To decrease the reduction of a floating amount at the time of seeking, to decrease the floating amount of a slider and to increase recording density by providing the joining member of a jimbal, which supports a slider, with the slider in a surface vertical to the floating surface of the slider. CONSTITUTION:The joining member of a jimbal 5 with a slider 1 is provided in the surface vertical to the floating surface. By forming a joining surface between the slider 1 and the jimbal 5 to be the front or side surface of the slider 1, a joining position between the front r side surface of the slider 1, a joining position between the slider 1 and the jimbal 5 is closed to the floating surface rather than a surface (slider back surface) on a side opposite to the floating surface of the slider 1. Thus, at the time of access, a moment to be received in the slider 1 can be decreased, the decrease for the floating amount of access operation can be reduced and the floating amount at normal time can be reduced. Further, by matching a border edge with a joining member 56 of a step member 55, which links a flexible member 52 and the joining member 56 of the jimbal 5, with a position for the center of gravity in the slider, the decreasing amount of the floating amount can be made zero. Thus, since the reducing amount for the float of the slider 1 at the time of access is made zero, the high density of recording is achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a support mechanism for a floating magnetic head in a magnetic disk device.

[Conventional technology]

Conventionally, as a support mechanism in which a flexible member of a gimbal of a magnetic head support mechanism extends in a direction perpendicular to the access direction of the slider, a flexible member as disclosed in U.S.P. 4,620,251 has been used. is connected via a stepped portion to a joining member provided in a plane substantially parallel to the air bearing surface of the slider, and this joining member is joined to the surface of the slider on the opposite side from the air bearing surface.

[Problem to be solved by the invention]

In such a conventional configuration, the distance between the joint surface of the slider and the gimbal and the air bearing surface was longer than the distance between the center of gravity of the slider and the air bearing surface.

For this reason, the slider receives a moment and rotates due to the inertial force acting on the slider center of gravity during acceleration and deceleration during access operations, thereby reducing the flying height of the slider (the distance between the slider and the magnetic disk).

For this reason, the flying height of the slider during steady state cannot be made very small, which has been an obstacle to increasing memory density.

FIGS. 34 to 37 illustrate the amount of drop in the flying height Δh of the slider (hereinafter referred to as the amount of depression of the slider Δ) during the access operation in the magnetic head support mechanism described above.

FIGS. 34 and 35 show a plan view and a side view of a magnetic head support mechanism called an in-line type in the above-mentioned conventional report. As shown in FIGS. 34 and 35,
The magnetic head support mechanism is a load arm 200 (row 1~
As shown in FIG. 35, one end of the load arm 200 is connected to a guide arm 230 connected to an access mechanism (not shown).
The other end holds a gimbal 210. One end of the gimbal 210 is connected to the load arm 200 by spot welding or the like, and the other end is joined to the back surface 221 of the slider 220 (the surface opposite to the top surface 222 of 71 facing the magnetic disk 240) with adhesive or the like. ing. The in-line head support mechanism is characterized in that the slider 220 is provided with a floating rail (not shown) that extends in the longitudinal direction of the load arm 200. FIG. 36 shows a model in which the access operation of the magnetic head support mechanism is modeled from a mechanical viewpoint. In addition, the acceleration α26 during data access
The direction of action of 0 is shown in Fig. 34, and the dimensions of each part are shown in Fig. 35.

Ql Distance from the joint surface of the Ni spacer 231 and the funnel arm 200 to the center of the plate thickness of the load arm 200 Q2 : Distance y2 from the center of the plate thickness of the load arm 200 to the center of gravity G of the slider 220 : The distance of the rotary arm 200 Distance Q5 from the center of the plate thickness to the joint surface of the slider 220 and gimbal 220 (that is, the slider back surface 221) From the varnished slider back surface 221 to the slider center of gravity G25
Distance to 0 The meaning of each symbol shown in Figure 36 is as follows.

kl: The spring strength of the root arm of the rotary arm is 2. The spring strength of Nishin Pal is 8: The air spring strength between the disc and the slider formed by the rotation of the disc Oθ: The torsion angle of the guide arm during access O1:
Twisting angle of the rotor arm during access 02: The torsional angle of the slider during access (this matches the torsional angle of the gimbal joined to the slider), that is, the rolling angle of the slider. An unbalance (access subsidence) occurs in the amount of floating between the rails on the inner and outer circumferential sides of the disk.

In other words, as shown in Figure 37, the slide If the width of da is y, Δh is Δh It is expressed as θ2.

03: Disk twist angle m1 during access operation:
Load arm mass: 2m2 Nislider mass: Deformation of each part during the access operation is expressed by the following equation by considering the balance of forces in the model shown in FIG.

kl・θ1=m1・Ql・α−2 good (θ1−fe2)
-mz・y2・a −(1)kr(θ2−L)=−mz
・cQ2yz)・3・02 for a− (2) From equations (1) and (2), ks is sufficiently larger than 2 (ks)k2)
Therefore, equation (3) can be abbreviated as equation (4).

Here, the generally used spring strength, mass, and length of each part are substituted into the right side of equation (4), and the magnitude of each term is compared and examined. Note that the following values were used for 9mHQw.

kz=1700 g-mm/rad, k2=50g-
mm/radQw=0.4mm1 ms=4-4mg
, rr+z=57mg The first term on the right side is 2 mz Q , valve 2 X 10-2 (5) (6) g , and equation (4) is further simplified and expressed by the following equation.

Here, the width of the slider is y, and the amount of depression of the slider is Δ
h (flying reduction amount due to access acceleration), Δh
is expressed by the following equation.

From equation (9), as a method to reduce Δ1), (a)'
J 1 mz, α, reduce nw, (b) k
There are two ways to increase s. Now, in order to improve the magnetic head support mechanism and reduce Δh without changing the slider shape, slider load, and access acceleration, reducing Ilw is an effective means of reducing Δh. is clear from equation (9).

However, in the conventional inline magnetic head support mechanism as shown in FIG.
21, the structure cannot be made smaller than 2Ω7. It has been impossible to reduce nw (the distance from the slider center of gravity G to the back surface of the slider) due to structural defects of the magnetic head support mechanism.

SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic head support mechanism that reduces the drop in flying height during seek, lowers the slider flying height, and achieves higher recording density.

Another object of the present invention is to provide a magnetic disk device that attempts to achieve higher recording density.

[Means to solve the problem]

The above object is achieved by providing a joint member of a gimbal that supports the slider with the slider in a plane perpendicular to the air bearing surface of the slider.

[Effect]

In the present invention, the joining member of the gimbal to the slider is provided in a plane perpendicular to the air bearing surface. By setting the joint surface of the slider and gimbal on the front or side surface of the slider, the joint position of the gimbal and slider can be brought closer to the air bearing surface than on the surface opposite to the slider air bearing surface (the back surface of the slider). The moment that the slider receives during access is reduced, the reduction in floating amount during access operation can be reduced, and the flying height during steady state can be reduced.

Furthermore, by aligning the boundary edge between the joint member of the step member that connects the flexible member of the gimbal and the joint member to the position of the slider center of gravity, it was possible to reduce the amount of decrease in the upper region of l\ to zero.

Furthermore, by providing the edge of the joining member on the opposite side to the floating surface at a position away from the boundary with the step member, it is possible to prevent variations in the amount of drop in float due to manufacturing errors during joining. Ta.

In addition, by shifting the boundary edge of the step member connecting the flexible member of the gimbal and the joining member to the air bearing surface side from the slider center of gravity, the deformation of the flexible member and the step member can be prevented. It is also possible to reduce the amount of drop in flying height at the time of access to zero, making it possible to completely eliminate the amount of drop in flying height.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

1. FIG. 1 is a diagram showing an example of the configuration of a magnetic disk device using a first embodiment of the magnetic head support mechanism of the present invention, FIG. 2 is a configuration diagram of the magnetic head support mechanism in FIG. 1, and FIG. 6 to 6 are enlarged views of the magnetic head support portion (slider and gimbal portion) of the magnetic head support mechanism. A magnetic disk 101 is mounted on a magnetic disk rotating shaft 100, and a slider 1 with a magnetic head 2 mounted thereon is supported by a magnetic head support mechanism 3 and connected to a guide arm 102 on the surface of the magnetic disk. . In this embodiment, the magnetic disk 101 rotates in the direction of the arrow 1-10. The guide arm 102 is rotated around an access rotation shaft 103 to move and set the magnetic head 2 (not shown in FIG. 1) to an arbitrary radial position on the magnetic disk 101.

The rotational direction of the access rotating shaft 103 is indicated by an arrow 109, and the movement of the magnetic head 2 in the radial direction of the magnetic disk (access direction) is indicated by an arrow 108.

In order for the magnetic head 2 to read data written on the surface of the magnetic disk 101 or to write data to a position after a specific half 12, the magnetic disk 1, 0
Moving radially over 1 is generally an access operation (
This operation is sometimes called simply an access) or a seek operation, but here we will refer to it as an access. Access mechanism 1
．． 06 consists of a coil 105 and a magnet 104, and rotates the guide arm 102 around the access rotation axis 103 to position the magnetic head at a predetermined radial position (access).
let

All of these are surrounded by a closed container 107.

The configuration of the magnetic head support mechanism 3 in FIG. 1 will be explained using FIG. 2. The support mechanism 3 for the magnetic spatula is composed of a load arm 4 and a gimbal 5. One end of the load arm 4 is fixed to the distal end side of the guide arm 102 with a screw 40 or the like, and the other end holds the gimbal 5 that supports the slider 1 at a joint 51 by spot welding or the like. The row 1-arm 4 includes an elastic part 41 that presses against the slider 1 and generates a load (also simply called a load), and a load beam part 42 and a flange part 43 that transmit the load to the slider. It is formed from. The aforementioned gimbals 5 are two parallel gimbals extending in a direction substantially parallel to the air bearing surface of the slider (the surface facing the magnetic disk 101) and substantially perpendicular to the access direction 108 (theta direction) of the slider 1. One end of the flexible finger 52 is spot-welded (as described above) to the funnel arm 4, which is a member more rigid than the gimbal 5, at the joint 51. (not shown), and the other end is connected to a step member 55 that is substantially perpendicular to the air bearing surface of the slider, that is, the magnetic disk surface, and extends in the direction of the air bearing surface. The other end of 55 is connected to a joining member 56 connected to the slider 1. Further, a stepped portion 5 is provided at approximately the center of the gimbal 5 in the longitudinal direction.
There is a central tongue 53 connected to the central tongue 5.
3 is provided with a load protrusion 54.

3 to 6 show detailed views of the slider 1 supported by the gimbal 5. 3 is a view of the gimbal 5 seen from the rotary arm side, FIG. 4 is a sectional view of I■ in FIG. 3, FIG. 5 is a side view, and FIG. 2 side). As shown in FIGS. 3 and 5, the gimbal 5 has two flexible fingers 52 extending from the joint 51 substantially perpendicular to the access direction 108 and substantially parallel to the air bearing surface. It is composed of a central tongue portion 53 having a load protrusion 54, a step member 55, and a joining member 56. As shown in FIG.
It is connected by.

The central tongue portion 53 is bonded to the slider back surface 11 with an adhesive or the like. As shown in FIGS. 5 and 6, the end of the flexible finger 52 is connected to a step member 55 that is substantially perpendicular to the slider air bearing surface 10 and extends in the direction of the air bearing surface. The other end of the stepped member 55 is connected to a joining member 56 that is joined to the slider 1. This joining member 56 extends substantially parallel to the direction in which the flexible fingers 52 extend. The end of the step member 55, which is the connecting portion between the joining member 56 and the step member 55 described above, is approximately parallel to the air bearing surface 10 of the slider 1, and the distance from the air bearing surface 10 is 5 cm, and the center of gravity G of the slider The distances to the surface 10 are set equal. In other words, the end of the step member 55 is parallel to the air bearing surface 10 and lies within a plane that includes the slider gravity center G.

Further, in this embodiment, the slider air bearing surface 1 of the bonding member 56 is
Since the edge 560 far from 0 coincides with the end of the step member 55, the edge 560 is parallel to the air bearing surface 10 and within a plane that includes the slider center of gravity G.

Next, the slider flying height reduction amount Δh (slider flying height sinking amount Δh) during the access operation in the magnetic head support mechanism 3 described above will be explained.

In the magnetic head support mechanism shown in FIGS. 1 to 6, the support mechanism that supports the side surface of the slider 1 makes it possible to reduce h to zero, making it possible to significantly reduce the sinking amount Δh. The reason for this will be explained using FIG. 7.

FIG. 7 is an enlarged version of FIG. 6, and is an explanatory diagram showing its functions. In FIG. 7, the same symbols as in FIG. 6 indicate the same parts or the same functions. As described above, the flexible finger portion 52 is connected to a step member 55 that is substantially perpendicular to the air bearing surface 10 of the slider 1 and extends in the direction of the air bearing surface 10, and the other end of the step member 55 is connected to the It is connected to a joining member 56 connected to the slider 1 shown in FIG. Here, the joining member 56
and the slider 1 are coupled, for example, with an adhesive or the like. An end of the step member 55, which is a connecting portion between the step member 55 and the joining member 56, is parallel to the air bearing surface 10 of the slider 1 and is in the same plane as the plane containing the center of gravity G. In this embodiment, the end of the stepped member 55 is an edge 5 far from the air bearing surface of the joining member 56.
60, that is, in the same plane. Therefore, the acceleration α acting on the slider 1 during the access operation occurs in a plane parallel to the slider air bearing surface 10 that includes the center of gravity G of the slider 1. Therefore, Q in equation (9) becomes zero,
The amount of depression Δh of the slider 1 due to the acceleration α is significantly reduced. This causes the sinking amount Δh caused by the acceleration α during access (due to a decrease in floating height)
, the contact between the slider 1 and the disk 101 is eliminated, which not only prevents the data stored on the disk surface from being destroyed, but also makes it possible to eliminate data read/write errors.

Next, another example of the magnetic head support mechanism of the present invention will be explained with reference to FIGS. 8 and 9.

In FIGS. 8 and 9, the same numbers as in FIGS. 3 to 7 indicate the same members or the same functions. The difference between this embodiment and the first embodiment described above is that the step member 55 is connected to the joining member 56.
5 is located closer to the air bearing surface 10 than the center of gravity G of the slider 1. In other words, in this embodiment, the end of the step member 55 is provided at a location shifted from the center of gravity G by Q in the direction of the air bearing surface 10. Note that the joining member 56 extends substantially parallel to the extending direction of the flexible fingers 52 and is joined to the slider 1 with an adhesive or the like, as in the first embodiment. Further, in this embodiment as well, the edge 560 of the joining member 56 far from the air bearing surface coincides with the end of the step member 55, as in the first embodiment.

As an effect of the present embodiment, the end of the step member 55 connected to the joining member 56 is moved closer to the slider air bearing surface 1o than the center of gravity G.
FIG. 9A, which is the joining point between the flexible finger portion 52 and the step member 52, is
The inclination angle O^ of slider 1 due to the moment generated at
It becomes possible to offset the In other words, by installing the joining member 56 shifted from the center of gravity G by Q in the direction of the slider air bearing surface 1o, it is possible to offset the moment generated in the flexible finger portion, and the gimbal 5 It is also possible to eliminate the reduction in flying height caused by the deformation of. That is, in the first embodiment, the step member 5
By setting the end of slider 5 on a plane that is parallel to surface 10 and includes the center of gravity G, the amount of sinking Δh when accessing
However, no consideration was given to reducing the sinking amount Δh' due to the deformation of the gimbal during access. In this example.

The end of the step member 55 is slightly aligned with the air bearing surface"-〇 side=1
9, it becomes possible to reduce the amount of depression Δh' of the slider 1 to zero due to the deformation of the gimbal.

This makes it possible to reduce the sinking amount Δh to almost completely zero during access.

The effect of providing the above-mentioned joining member below the center of gravity will be explained below with reference to FIGS. 10 to 13.

FIG. 10 is a mechanical diagram showing the factors of the slider inclination θ during the access operation when the structure is parallel to the slider air bearing surface and includes the center of gravity G, as in the first embodiment of the present invention. The factors for the inclination θ are the moment θ generated at point A in the figure due to the distance C between the center of gravity G and the flexible finger, and the inertia of the slider 1 (where m is the slider mass and α is the access acceleration). There is an inclination OΔ that occurs when the step member 55 is lifted by θ, and an inclination IS that occurs due to the shearing force of mα. In other words, the slope of the slider is 0, which is expressed by the following equation.

20- 0 =Qt+ OA+ is -(1
0) Here, when comparing the orders of each term, it is easy to see that Ot is dominant.

0≠0. (I)) Therefore, if the joining point between the slider 1 and the joining member 56 is now shifted to the side of the air bearing surface 10 from the center of gravity G of the slider as shown in FIG. It acts in the direction of canceling the moment M generated at point A. Therefore, the zero inclination of the slider 1 caused by gimbal deformation due to access acceleration can be reduced to almost completely zero. For a more detailed explanation, set the slider support point by Q above the center of gravity G (
That is, the inclination O of the slider 1 due to the access acceleration when the slider 1 is mounted while being shifted to the rear side 11) is roughly estimated, and the following is performed using FIGS. 12 and 13. As shown in FIGS. 12 and 13, the twist caused by the moment of the left flexible finger member 52 during access is adjusted by θ, the lowering of the end based on O□ is adjusted by Δt, and the right flexible finger member 52 is The twist due to the moment of 52 is θ1. If the lowering of the end due to θ is Δ, then Δ1. Slider 1 by Δ1
The slope of the slider due to the bending displacement of the left and right flexible finger members 52 is 01. Then, the inclination θ of the slider 1 due to the access acceleration α at the time of access is expressed by the following equation.

0=is+Ot+fJ　Δ+Ob Here, from material mechanics considerations, ...(12) ...(17) It is expressed as

Here, δ is a parameter indicating the fixing condition between the joining member 56 and the slider 1, and when δ=0, it is considered to be pin supported;
This represents a state in which the movement of the slider is not restricted by the joining member.

In addition, E is Young's modulus, k is a constant indicating the stiffness of the air film spring during rolling of the slider, and 2: second moment of area. Also, C=Q + 9.2.

Here, when comparing the order of each variable, θ is the following formula % formula % (15) (16) (18) If the above formula is rearranged by Q with 0 = 0, each term in the above formula is If we perform an order comparison, Q will now be negative because C>O. Here, as shown in Fig. 12, since Q is positive in the direction above the slider center of gravity G, the physical meaning of this result is to set the slider support point by shifting it below the slider center of gravity G by Q. For example, this means that the tilt due to the deformation of the gimbal caused by the access acceleration of the slider 1 can be made almost completely zero. For this reason, in the second embodiment shown in FIGS. 8 and 9, the end of the one-step member 55 connected to the joining member 56 is moved by α in the direction of the air bearing surface 10 from the center of gravity G of the slider. ing.

4- Next, a third embodiment of the present invention will be described with reference to FIGS. 14 and 15. In these FIGS. 14 and 15, the same numbers as those in FIGS. 3 to 7 described above indicate the same members or the same functions. The difference between this embodiment and the first embodiment described above is that the step member 55 is connected to the outer edge 521 of the flexible finger member 52. This makes it possible to reduce the width of the gimbal 5 itself, which also has the advantage of reducing the size of the entire support system. Furthermore, as the gimbal is made smaller, the mass of the entire support system can be reduced, so the access mechanism for moving the magnetic head 2 in the radial direction can be made smaller.

In this embodiment, a hemispherical protrusion 561 is provided on the joining member 56, which is parallel to the air bearing surface 10 of the slider and is provided on a surface 2 that includes the center of gravity G of the slider. This results in
It becomes possible to accurately control the joining point between the slider 1 and the joining member 56 and join them at a predetermined location. In this embodiment, the position of the center of gravity of the slider 1 is made to coincide with the position of the center of gravity. As a result, in this embodiment, it is possible to expect the same effects as in the first embodiment.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. 16 and 17. 16 and 17, the same numbers as in FIGS. 3 to 7 indicate the same members or the same functions.

The difference between this embodiment and the third embodiment is that the flexible finger portion 52 extends in the longitudinal direction of the slider 1 to the vicinity of the center of gravity G of the slider, and from the end thereof, the step member 55 is joined to the other end of the stepped member 55, on a plane that includes the center of gravity G of the slider 1 and is parallel to the air bearing surface 10 of the slider 1.
A joining member 56 extending in the longitudinal direction of the slider 1 is connected to the slider 1.

The joining member 56 has a protrusion 561 similar to the second and third embodiments described above. Similar to the second and third embodiments, this means that the connection point between the slider 1 and the joining member 56 is parallel to the air bearing surface 1o of the slider 1, and the center of gravity of the slider 1 is
This is for accurate positioning on the surface containing the surface. In this embodiment, by providing the step member 55 at approximately the center of gravity in the longitudinal direction of the slider 1, the slider is moved toward the air bearing surface 10 of the slider 1 due to the access acceleration during the access operation.
It becomes possible to prevent rotation about an axis perpendicular to the plane within the plane. This reduces the vibration of the slider 1 during access, making it possible to access target data in a short time. Further, in this embodiment as well, it is possible to expect the same effects as in the above-described first embodiment.

Next, a fifth embodiment of the present invention will be described with reference to FIGS. 18 and 19. In these figures 18 and 19,
The same numbers as in FIGS. 3 to 7 indicate the same members or the same functions. The difference between this embodiment and the third embodiment shown in FIGS. 14 and 15 is that a load protrusion 54 is provided on the load beam 42 of the funnel arm 4. This is because the tongue portion 53 is omitted. By providing the load projection 54 on the load beam 42, the gimbal 5 can be manufactured easily and productivity can be improved.

7 In other words, it is difficult to provide the load protrusion 54 on a thin plate like the gimbal 5 in production, but as in this example,
Since it is relatively easy to provide the load projection 54 on the load beam 42, productivity can be improved. Furthermore, the same effects as in the first embodiment can be expected.

Note that the shape and bonding state of the bonding member 56 in this embodiment are similar to those in the first embodiment. In other words, the end of the step member 55 that is the connecting portion with the joining member 56 is parallel to the air bearing surface and is on the same plane as the plane containing the center of gravity G.

Next, a sixth embodiment of the present invention will be described with reference to FIGS. 20 and 21. In these figures 20 and 21,
The same numbers as in FIGS. 3 to 7 indicate the same members or the same functions. The difference between this embodiment and the third embodiment is that in this embodiment, the joining member 56 is attached to the flexible finger portion 52.
It does not extend in the direction in which the step member 55 extends, but extends in a direction substantially perpendicular to the slider air bearing surface 10 with the same width as the step member 55. Further, an edge 561 on the first side (the side far from the slider air bearing surface 1o) of the step member 56 is connected to the center of gravity G of the slider as in the second embodiment.
It is set to be shifted toward the air bearing surface 10 side of the slider by Q calculated by Equation 20. Therefore, with a simple gimbal structure, it is possible to completely reduce the amount of slider depression Δh due to access acceleration to almost zero, which further improves the productivity of the magnetic head support mechanism and the reliability of the magnetic disk drive. can be easily done.

A seventh embodiment of the present invention will be described with reference to FIGS. 22 and 23. In these figures 22 and 23, the third
The same numbers as in FIGS. 7 to 7 indicate the same members or the same functions. This embodiment and the above-mentioned FIG. 14,
The difference from the third embodiment shown in FIG. 15 is that the joining member 5
The center point in the width direction (perpendicular to the air bearing surface 10) of the slider 6 is set on a plane that is parallel to the slider air bearing surface 10 and includes the center of gravity G, and the joining member 56 has a protrusion as shown in FIG. 56
1 is not provided. In this embodiment, the bonding member 56 and the slider 1 are bonded together using an adhesive with weak bonding strength, so that sufficient bonding strength cannot be obtained, that is, when the point of action of the access acceleration cannot be limited. Also, the point of action of the access acceleration can be set on a plane parallel to the air bearing surface of 1° and including the center of gravity G. As a result, the same effect as in the first embodiment described above can be obtained from the joining member 56.
This can be expected even in cases where sufficient bonding force between the slider 1 and the slider 1 cannot be obtained.

Next, an eighth embodiment of the present invention will be described with reference to FIGS. 24 to 27. In these FIGS. 24 to 27, the same numbers as in FIGS. 3 to 7 indicate the same members or the same functions.

Figure 24 is a plan view of the gimbal seen from the load arm side.
Figure 25 is a sectional view taken along line nn in Figure 24, and Figure 26 is a cross-sectional view of the
4 is a side view, and FIG. 27 is a front view of the gimbal viewed from the outflow end side of the slider.

The difference between the first embodiment and this embodiment is that, as shown in FIG. It extends to the side surface 12 and is connected to a step member 55 (see FIG. 25).

In this embodiment, the gimbal 5 can be made smaller by forming the ends of the flexible fingers 52 into a shape as shown in FIG. 24, which extends in the width direction of the slider. Further, in this embodiment as well as in the first embodiment, the end of the step member 55 that is the connecting portion with the joining member 56 is connected to the air bearing surface 10 of the slider 1.
By providing it in the same plane as the plane parallel to and containing the center of gravity G, the same effects as in the first embodiment can be expected.

Next, a ninth embodiment of the present invention will be described with reference to FIG. 28.

In FIG. 28, the same numbers as in FIGS. 3 to 7 indicate the same members or the same functions. This embodiment and the above-mentioned FIG. 14.

The difference in the third embodiment shown in FIG.
6 (length in the direction perpendicular to the air bearing surface 10) differs in the longitudinal direction of the slider 1.

That is, the green 560a on the side closer to the step member 55 of the edge 560 far from the air bearing surface of the joining member 56 coincides with the end of the step member 55 on the joining member 56 side, is parallel to the slider air bearing surface 10, and includes the center of gravity G. The edge 56 on the far side of the step member 55 is set to 2.
0b extends close to the slider back surface 11 and slider 1
It extends in the longitudinal direction. Therefore, in this example,
Since the area of the joining member 56 can be increased, the bonding force between the slider 1 and the joining member 56 can be made strong and reliable. Furthermore, the edge 560a of the joining member 56 is parallel to the upper surface 71 of the slider 1, and the center of gravity G
To match the surface including the center of gravity G, the end of the step member 55 on the joining member 56 side is to match the surface parallel to the air bearing surface 11 of the slider 1 and including the center of gravity G.
Effects similar to those of the embodiment can also be expected.

Next, a tenth embodiment of the present invention will be described with reference to FIGS. 29 to 31. Figure 29 is a plan view of the load arm side, Figure 30 is a side view of Figure 29, and Figure 31 is the side view of Figure 29.
FIG. 3 is a front view of the figure viewed from the slider outflow end. These second
In FIGS. 9 to 31, the same numbers as in FIGS. 3 to 7 indicate the same members or the same functions. The difference between this embodiment and the first embodiment described above is that a step member 55 is provided at the longitudinal end of the flexible finger portion 52, and a joining member 56 connected to the step member 55 is installed by the magnetic head 2. This point is provided on the outflow end face 13 of the slider. In this embodiment, by providing the step member 52 at the longitudinal end of the flexible finger portion 52, the gimbal 1 can be made smaller and productivity can be improved. Furthermore, the step member 5
The end of the step member 55, which is the connecting part between the slider 5 and the joining member 56, is parallel to the slider air bearing surface 10 and in the same plane as the plane containing the center of gravity G of the slider 1-, as in the first embodiment. Furthermore, the same effects as in the second embodiment can also be expected.

An eleventh embodiment of the present invention will be described with reference to FIGS. 32 and 33. In these figures 32 and 33, the third
The same numbers as in FIGS. 7 to 7 indicate the same members or the same functions.

The difference between this embodiment and the third embodiment shown in FIGS. 14 and 15 is that the step 57 is provided from the joint 51 provided in the third embodiment. Central tongue 5
3 is that the stepped portion 57 is cut and made independent, as shown in FIG. As a result, the restraining force on the slider movement due to the torsional force generated in the step portion 57 is eliminated, and it becomes possible to completely support the slider 1 only by the flexible finger portions 52. Therefore, by setting the edge of the step member 55 that becomes the connecting part with the joint member 56 in the same plane as the plane that is almost parallel to the slider air bearing surface 1o and passes through the center of gravity G, the point of application of acceleration during access can be reduced. Since the center of gravity can be almost completely aligned with the center of gravity G, the amount of sinking during access can be made even smaller than in the third embodiment.

〔Effect of the invention〕

According to the present invention, since it is possible to set the gimbal's slider support point on a plane that is almost parallel to the slider's flying surface and includes the slider's center of gravity, the reduction in the slider's flying height due to access acceleration ( This makes it possible to significantly reduce the amount of subsidence. Furthermore, by setting the slider support point closer to the slider's flying surface than the center of gravity, it is possible to eliminate the drop in the slider's flying height due to gimbal deformation during access. It is possible to reduce the flying height to almost completely zero.

[Brief explanation of the drawing]

FIG. 1 is a partial cross-sectional view showing the configuration of a magnetic disk drive equipped with a magnetic head support mechanism according to a first embodiment of the present invention, and FIG. 2 illustrates the configuration of the magnetic head support mechanism in FIG. 1. Figure 3 is a plan view of the slider and gimbal part in Figure 2, Figure 4 is a sectional view taken along
3 is a side view of FIG. 3, FIG. 6 is a front view of FIG. 3, FIG. 7 is a functional explanatory diagram of the first embodiment of the present invention shown in FIGS. 1 to 6, and FIG. A side view of the second embodiment of the present invention, FIG. 9 is a front view of FIG. 8, and FIGS. 10 to 13 are a side view of the second embodiment of the present invention.
FIG. 14 is a side view showing the third embodiment of the present invention, FIG. 15 is a front view of FIG. 14, and FIG. 16 is a fourth embodiment of the present invention. A side view showing an example;
FIG. 17 is a front view of FIG. 16, and FIG. 18 is a fifth embodiment of the present invention.
19 is a front view of FIG. 18,
FIG. 20 is a side view showing the sixth embodiment of the present invention;
20 is a front view of FIG. 20, FIG. 22 is a side view showing the seventh embodiment of the present invention, FIG. 23 is a front view of FIG. 22, and FIG. 24 is a front view of FIG.
25 is a plan view of the eighth embodiment of the present invention as seen from the load arm side, FIG. 25 is a sectional view taken along line nn in FIG. 24, FIG. 26 is a side view of FIG. 24, and FIG. FIG. 24 is a front view of the slider as seen from the outflow end side, FIG. 28 is a side view of the ninth embodiment of the present invention, and FIG. 29 is a tenth embodiment of the present invention as seen from the funnel arm side. 30 is a side view of FIG. 29, FIG. 31 is a front view of FIG. 29 seen from the magnetic head side, and FIG. 32 is a side view showing the eleventh embodiment of the present invention. 33 is a front view of FIG. 32, FIG. 34 is a plan view illustrating an example of a conventional in-line magnetic head support mechanism, FIG. 35 is a side view of FIG. 34, and FIGS. 36 and 37.
The figure shows a mechanical mechanical model of a conventional support mechanism. Toslider, 2...Magnetic spatula 1, 3.Magnetic head support mechanism, 4.Low I arm, 5.Gimbal, 51.
・Joint part, 52...Flexible finger part, 53...Central tongue part,
54...Loading protrusion, 55...Step member, 56...
・Joining member, 101... Magnetic disk, 108... Access direction, 102 Guide arm, 106... Access mechanism, 10... Slider air bearing surface, 11 Slider back surface, 2
60・Access acceleration.

Claims (1)

[Claims] 1. A slider having a magnetic head mounted thereon and having an air bearing surface facing the magnetic disk surface, and a gimbal supporting the slider, the gimbal being arranged with respect to the access direction of the slider. a flexible member extending in a direction substantially perpendicular to the flexible member; a connecting member for connecting one end of the flexible member to a member that is more rigid than the flexible member and that is connected to the access mechanism; A magnetic head support mechanism having a joining member connecting the other end of the member to the slider, characterized in that a connecting surface of the slider to the joining member is a side surface perpendicular to a front air bearing surface of the slider. Magnetic head support mechanism. 2. A slider equipped with a magnetic head and having an air bearing surface facing the magnetic disk surface, and a gimbal supporting the slider, the gimbal being substantially parallel to the air bearing surface of the slider and oriented in the access direction of the slider. a flexible member extending in a direction substantially perpendicular to the flexible member; a connecting member for connecting one end of the flexible member to a member that is more rigid than the flexible member and that is connected to the access mechanism; A magnetic head support mechanism having a joining member that connects the other end of the member to the slider, wherein the connecting surface of the slider to the joining member is a surface other than the back surface of the surface facing the front air bearing surface of the slider. A magnetic head support mechanism characterized by: 3. The distance between the end of the joint between the joint member and the flexible member on the joint member side and the air bearing surface is less than or equal to the distance between the center of gravity of the slider and the air bearing surface. 1
2. A magnetic head support mechanism according to paragraphs 1 and 2. 4. The other end is connected to one end of the step member extending in the direction of the air bearing surface, the other end of the step member is connected to the joining member, and the other end of the step member is approximately connected to the air bearing surface. 3. The magnetic head support mechanism according to claim 1 or 2, wherein the magnetic head supporting mechanism is parallel to the air bearing surface, and the distance from the air bearing surface is less than or equal to the distance between the center of gravity of the slider and the air bearing surface. 5. The joint part of the joint member with the slider is formed into a hemispherical or triangular shape, and the joint point between the joint member and the slider is
3. The magnetic head support mechanism according to claim 1 or 2, wherein the magnetic head support mechanism is substantially parallel to the air bearing surface of the slider, and the distance from the air bearing surface is less than or equal to the distance between the center of gravity of the slider and the air bearing surface. 6. One or more magnetic disks stacked on a rotating shaft, a slider equipped with a magnetic head for recording information on the surface of the magnetic disk or reading information recorded thereon, and supporting this slider. a magnetic head supporting mechanism for supporting the slider; and an access mechanism for moving the magnetic head to a specific position on the magnetic disk for recording or reading information. The support mechanism includes a gimbal that supports the slider on a side surface perpendicular to the flying surface of the slider;
A magnetic disk drive characterized in that the gimbal is connected to a rigid structure support body connected to a distal end side and supported by a guide arm at one end side.