JPH03152775A - Magnetic head supporting mechanism - Google Patents

Abstract

PURPOSE:To prevent the reduction of the floating quantity of a slider due to acceleration by providing a joining stand having the same plane as the center plane of the slider set in parallel with the floating plane of the slider and also including the center of gravity of the slider at a loading arm, joining one end of a gimbal with the joining stand, and supporting the slider at the center plane of the slider with the other end of the gimbal. CONSTITUTION:The joining stand 44 having a joining plane on the same plane as the center plane passing the center 15 of gravity of the slider 1 and in parallel with the floating plane is provided on the loading arm 4. and the rear end of the gimbal 5 is joined with the joining plane, and the slider 1 is supported at the tip part of the gimbal 5 by setting the center plane and a parallel pane on the same plane with a supporting member 53 having the parallel plane same as the center plane of the slider 1. Therefore, when the acceleration in an access direction is applied to the slider 1, the working point of the acceleration applied to the slider 1 coincides with the center plane of the slider 1, and no angular moment is generated in the slider 1, and no inclination occurs in the slider 1. In such a manner, it is possible to suppress the reduction of the floating quantity generated when the slider provided with a magnetic head makes access, and to reduce the contact frequency of the slider with a magnetic disk.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floating magnetic head support mechanism for a magnetic disk drive, and particularly relates to a support mechanism that reduces fluctuations in the flying height of a magnetic head during access. ] In the conventional magnetic head support mechanism, the flexible member of the gimbal that supports the slider on which the magnetic head is mounted is
One of the support mechanisms having a structure extending perpendicularly to the slider access direction, which is approximately half the direction of the magnetic disk, is disclosed in US Pat. No. 4,620,251.
The flexible member is connected via a stepped portion to a joining member provided in a plane substantially parallel to the air bearing surface of the slider facing the magnetic disk; It was attached to the side surface. That is, the distance between the joint surface of the slider and the gimbal and the air bearing surface of the slider was longer than the distance between the center of gravity of the slider and the air bearing surface. For this reason, when the magnetic head accelerates or decelerates during an access operation, the slider receives a moment due to the inertial force that acts on the slider's center of gravity, causing it to rotate and tilt, thereby reducing the flying height of the slider (the distance between the slider and the magnetic disk). Was.

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.

In addition, in the conventional example disclosed in Japanese Patent Application Laid-open No. 1-107384, the gimbal spring mounting surface of the suspension (also called a load arm) and the embossed (also called a pivot) mounting surface are connected to the slider. It must be formed so as to be offset by a distance equal to the sum of the distance from the back surface opposite to the flying surface to the center of gravity of the slider and the height of the embossment.

In other words, manufacturing was difficult because one step had to be provided. The gimbal and the slider can be joined by providing a groove along the edge where the side surface of the slider intersects with an imaginary plane parallel to the air bearing surface and including the slider's center of gravity, and fixing the gimbal in the groove. was. Providing the groove in the slider becomes a major obstacle to downsizing the slider. In other words, it is extremely difficult to manufacture a small slider by providing a groove on its side surface that is parallel to the air bearing surface and extends in the longitudinal direction of the slider, including the center of gravity of the slider.

[Problem to be solved by the invention]

The conventional magnetic head support mechanism described above has a problem in that when the slider carrying the magnetic head accesses the magnetic disk surface, the slider tilts due to the acceleration of the access, that is, the flying height decreases. In addition, other conventional magnetic head support mechanisms are not easy to manufacture, as mounting the gimbal spring requires the surface and embossed mounting surface to be offset from each other, or providing a groove in the side surface of a small slider.

An object of the present invention is to provide a magnetic head support mechanism that can suppress the reduction in flying height that occurs when a slider equipped with a magnetic head is accessed, reduce the frequency of contact between the slider and the magnetic disk, and that is easy to manufacture and has high productivity. There is a particular thing.

[Means to solve the problem]

In order to achieve the above object, the magnetic head support mechanism of the present invention includes a slider having an air bearing surface facing a magnetic disk on which a magnetic head is mounted and on which writing/reading is performed by the magnetic head; A load arm consisting of a flexible gimbal that extends at right angles and supports the slider at its tip, a rigid load beam section to which the rear end of the gimbal is attached, and an elastic section that continues to the load beam section. In the magnetic head support mechanism, which is driven in the access direction by an access mechanism coupled through an end of the elastic part, the tip of the gimbal includes a center of gravity of the slider and is parallel to the air bearing surface. A support part having a parallel surface that is flush with the slider center plane is provided, the slider is joined to the support part with the parallel plane being the same plane as the slider center plane, and the load beam part is
The present invention is characterized in that a bonding table is provided that protrudes toward the air bearing surface and has a bonding surface that is substantially flush with the center plane of the slider, and the rear end portion of the gimbal is bonded to the bonding surface.

In order to achieve the above object, another magnetic head support mechanism of the present invention includes a slider having an air bearing surface facing a magnetic disk on which a magnetic head is mounted and on which writing/reading is performed by the magnetic head.

a flexible gimbal extending substantially perpendicular to an access direction of the slider and supporting the slider at the front;

The load arm is composed of a rigid load beam section to which the rear end of the gimbal is attached, and an elastic section following the load beam section, and an access mechanism connected through the end of the elastic section. In the magnetic head support mechanism driven in the access direction, a distal end of the gimbal includes:
providing a support part having a parallel surface that includes the center of gravity of the slider and is on the same plane as a slider center plane that is parallel to the air bearing surface, and joining the slider to the support part with the plane parallel to the slider center plane being the same plane; Further, a joining table is provided on the load beam portion, and has a joining surface that protrudes toward the air bearing surface and is parallel to the center plane of the slider and has a step, and a part that is inclined from the support surface of the gimbal is connected to the joining surface. The rear end that connects is joined.

It is characterized by

The joint stand may be molded integrally with the load arm, or may be joined together to form an integral unit.

In order to achieve the above object, still another magnetic head support mechanism of the present invention includes a slider having an air bearing surface facing a magnetic disk on which a magnetic head is mounted and on which writing/reading is performed by the magnetic head; a flexible gimbal extending substantially perpendicular to the access direction and supporting the slider at its tip; a rigid loading beam to which the rear end of the gimbal is attached; and an elastic section following the loading beam. and a load arm, which is driven in the access direction by an access mechanism coupled through an end of the elastic part, the center of gravity of the slider being located at the tip of the gimbal. and a support part having a parallel surface that is on the same plane as the center plane of the slider that is parallel to the air bearing surface, the slider is joined to the support part with the plane parallel to the center plane of the slider being the same plane, and the load beam part A rear end portion connected to the air bearing surface side via a portion inclined from the gimbal parallel surface is joined to the air bearing surface side of the gimbal.

By the way, it is preferable that the support part of the gimbal has a flange bent from a parallel plane in order to join the support part and the slider.

Furthermore, it is preferable that the load arm has a protrusion at the tip of the load beam section, which transmits the load generated by the elastic section in contact with the back surface of the slider on the opposite side from the flying surface.

[Effect]

As the magnetic disk rotates, airflow flows between the magnetic disk and the flying surface of the slider, causing the slider to move.

When the access mechanism is driven in a slightly floating state in balance with the load generated by the elastic part of the load arm, the slider receives acceleration in the access direction, which is approximately the radial direction of the magnetic disk, through the load arm and gimbal. is added.

In the magnetic head support mechanism of the present invention, a bonding table having a bonding surface that passes through the center of gravity of the slider and is in the same plane as the center plane parallel to the air bearing surface is provided on the load arm, and the rear end of the gimbal is bonded to the bonding surface. , at the tip of the gimbal, the slider is supported by a support part with a plane parallel to the center plane of the slider, making the center plane and the parallel plane the same plane, so as mentioned above, the slider is not accelerated in the access direction. is applied, the point of action of the acceleration applied to the slider coincides with the slider center plane, no rotational moment is generated on the slider,
Therefore, the slider does not tilt, the flying height of the slider does not decrease, and since the gimbal can be formed from a flat plate, it is easy to manufacture.

Furthermore, in other magnetic head support mechanisms of the present invention, that is, those in which there is a step between the bonding surface of the bonding table and the center plane of the slider, or the magnetic head support mechanism in which the gimbal is bonded to the air bearing surface side of the load beam, the gimbal can be used. At the tip of the slider, the slider is supported by a support part with a plane parallel to the center plane of the slider, making the center plane and the parallel plane the same plane.
When acceleration is applied to the slider in the access direction as described above, the point of action of the acceleration applied to the slider coincides with the slider center plane, no rotation moment is generated on the slider, the slider does not tilt, and the slider's flying height does not decrease.

〔Example〕

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

FIG. 1 is a block diagram of a magnetic disk device using the magnetic head support mechanism of the present invention, FIG. 2 is a front view of the first embodiment of the present invention, FIG. 3 is a top view thereof, and FIG. Side view, 5th
The figure is a 1-1 sectional view of FIG. 3, and FIG. 6 is a bottom view of FIG. 2.

As shown in FIG. 1, the magnetic disk rotation shaft 100 includes:
A magnetic disk 101 for magnetic storage is mounted, and on the surface of the magnetic disk 101, a slider 1 equipped with a magnetic head for reading/writing from/to the magnetic disk 101 is supported by a magnetic head support mechanism 3. When the magnetic disk 101 rotates, the slider 1
The airflow flowing between the lower surface of the magnetic disk 101 and the surface of the magnetic disk 101 causes the magnetic disk 101 to float slightly above the surface of the magnetic disk 101 . By the way, the lower surface of the slider facing the magnetic disk is generally called the air bearing surface.

The magnetic head support mechanism 3 is connected to a guide arm 102, and the base end of the guide arm 102 is rotatably attached to an access rotating shaft 103 installed close to the magnetic disk 101. The guide arm 102 connects the magnetic head 2 of the slider 1 to the magnetic disk 101 via the magnetic head support mechanism 3 connected to its tip.
to a predetermined radial position. Here, magnetic disk 1
01 is indicated by an arrow 110 (clockwise), and the movement of the slider 1 in the magnetic disk radial direction, that is, the access direction is indicated by an arrow 108.

A magnetic head 2 mounted on a slider 1 is connected to a magnetic disk 1.
Moving in the radial direction on the magnetic disk 101 in order to read data written on the surface of the magnetic disk 101 or to write data at a specific radial position is generally called access (access operation) or seek (seek operation).
, but here we will refer to it as access.

The access mechanism 106 includes a coil 105 and a magnet 104, and rotates the guide arm 102 around the access rotation shaft 103 to position (access) the magnetic head at a predetermined radial position. The whole is surrounded by a closed container 107.

A magnetic head support mechanism according to an embodiment of the present invention will be described with reference to FIG. The magnetic head support mechanism 3 includes a substantially trapezoidal plate-shaped load arm 4 whose width decreases toward the tip in the longitudinal direction.
and a joint stand 44 provided on the back of the front part of the load arm 4.
It consists of a plate-shaped gimbal 5 that is attached to and extends in the longitudinal direction, and a slider 1 is attached to the tip of the gimbal 5.

Also, the base end of the load arm 4 is connected to the guide arm 102 (first
(see figure) via a spacer 40 using, for example, a screw.

The load arm 4 includes a flat elastic section 41 adjacent to the guide arm 102 and extends from the elastic section 41 .

It consists of a load beam part 42 reinforced by a flange part 43 formed by bending both width edges, and a joint base 44 protruding from the back surface is provided at the front part of the load beam part 42. Note that this joining table 44 is molded by pressing or the like. The gimbal 5 is made of a flexible plate, and includes a wide joint 51 that joins with the lower surface of the joint base 44, and two outer flexible fingers 52 that extend forward from the joint 51 in parallel with each other. The support member 53 is bent at right angles to the opposing inner side of the outer flexible finger portion 52. This support member 53 is joined to the side surface of the slider 1, and thus the gimbal 5 supports the slider 1 on which the magnetic head is mounted. And the elastic part 4 of the load beam part 42
1 generates a load (also simply called a load) when pressed against the slider 1, and the load beam section 42 transmits the load to the slider 1.

The joint table 44 provided on the load beam part 42 so as to protrude from the back surface has a joint surface 440 that is parallel to the air bearing surface of the slider 1 and is in the same plane as the plane containing the center of gravity G15 of the slider 1 (hereinafter referred to as the slider center plane). This joint surface 440
A wide joint 51 of the gimbal 5 is attached by spot welding 55 or the like. Further, the outer flexible fingers 52 of the gimbal 5 are on the same plane as the center plane of the slider, and naturally have a parallel surface parallel to the air bearing surface.
The slider 1 is located between the supporting parts 53 which are bent at right angles to the parts 2 and 53.
In this embodiment, in which the support member 53 and the slider 1 are joined with adhesive or the like with the slider center plane and the parallel plane of the gimbal 5 on the same plane, the edge 530 of the support member 53 far from the air bearing surface is the side surface. Although it is on the same plane as the flexible finger, if the support member 53 is provided above the outer flexible finger 52, in other words, on the side farther from the air bearing surface, the edge of the support member 53 close to the air bearing surface 531 may be flush with outer flexible fingers 52.

Two magnetic heads 2 are provided on the outflow end surface 13 which is the tip of the slider 1, and a load protrusion 4 provided on the flange portion 42 of the load arm 4 is provided on the slider back surface 11.
5 are in contact. The load protrusion 45 is generated at the elastic portion 41 of the load arm 4.

It functions to transmit the applied load to the slider 1 via the back surface 11 of the slider 1.

Next, the amount of fluctuation in the flying height of the slider during the access operation in the magnetic head support mechanism of the present invention will be described.

First, a conventional magnetic head support mechanism (for example, U
nited 5tutes Patent Na4,6
20, 251, etc.), the amount of slider flying drop (hereinafter referred to as sinking amount) Δh due to the access acceleration during access operation is investigated using a conventional magnetic head support mechanism generally called in-line type. The front view and side view seen from the load arm side are shown in 7A.
, 7B. As shown in FIG. 7A, the magnetic head support mechanism is composed of a load arm 200 (also called a load spring) and a gimbal 210 (also called a gimbal spring). One end of the arm 200 is connected to a guide arm 230 connected to an access mechanism (not shown) with a spacer 231 in between, and the other end is connected to a gimbal 210.
is maintained. One end of the gimbal 210 is connected to the load arm 200 by spot welding or the like, and the other end is connected to the back surface 221 of the slider 220 (the magnetic disk 240
(the surface opposite to the air bearing surface 222) is bonded to the air bearing surface 222 with an adhesive or the like. The feature of the in-line type head support mechanism is that the slider 220 has a load arm 20 on its air bearing surface.
Two levitation rails extending in the longitudinal direction of 0 (not shown)
It is important to have the following.

Figure 8 shows a model of the access operation of this magnetic head support mechanism from a mechanical perspective.
The direction of action of acceleration α during data access is shown in Figure 7A.
Further, the dimensions of each part are shown in Fig. 7C.

Here, the following variables are used to calculate the amount of subsidence.

Distance g2 from the joint surface of the n1 spacer 231 and the load arm 200 to the center of the plate thickness of the load arm 200: From the center of the plate thickness of the load arm 200 to the slider 2
Distance y2 from center of gravity G250 of load arm 200 to slider 2
20 and the gimbal 210 (that is, the slider back surface 221) Distance from the slider back surface 221 to the center of gravity G250 of the slider The meanings of the symbols shown in FIGS. 8A and 8B are as follows.

k□: The spring strength of the base of the load arm is 2 Nishinpal, and: it is formed by the rotation of the disk. Air splash strength between the disk and slider 0°: Twisting angle of the guide arm when accessing θ1: Twisting angle of the load arm when accessing 0□: Twisting angle of the slider when accessing (this is the torsional angle of the slider when accessing In other words, the rolling angle of the slider, which matches the torsion angle of the gimbal that is attached to the slider. Balance (sinking) occurs.

That is, as shown in FIG. 8B, when the width of the slider is y, the sinking amount Δh is expressed as Δh=Lθ2.

θ,: Disk twist angle during access operation (θ., θ
1 becomes 0 even when accessed because the rigidity is high. ) m8: Load arm mass m2 Nislider mass The 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. 8A.

Cks >> 1c, which is sufficiently large compared to 2, k, and 2
z) 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. Furthermore, m and Qw are The following values were used.

k, = 1 7 0 0 g - am/radk
, = 5 0 g O+vs/radQv=0.
4mm, m, =44B, m, =57+
*The first term on the right side of g is mtQutou2×10″″″ ・・・・・・
...(6) From equations (1) and (2), equation (4) is further simplified and expressed as 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.

Δh:'J o, =<V>Q m x Q
% , , , , (9°2 2 k.

From equation (9), as a method to reduce Δh, (a)
Decrease y, m, , a, Qv. (b) Increasing ka, etc. There are two methods (a) and (b). Now, without changing the slider shape, slider load, and access acceleration,
It is clear from equation (9) that reducing nu is an effective means of reducing Δh in order to improve the support mechanism and reduce Δh.

However, in the conventional inline magnetic head support mechanism as shown in FIG. 7C, the gimbal 210 is attached to the rear surface of the slider.
21, it is structurally impossible to reduce Qw (distance ml from the slider center of gravity G to the back surface of the slider).

Due to the structure of the magnetic head support mechanism, it was impossible to make it smaller.

However, in the first embodiment of the present invention shown in FIGS. 2 to 6, the structure of the support mechanism makes it possible to reduce Q%I to zero, making it possible to significantly reduce Δh. The reason for this will be explained using FIG. 9.

FIG. 9 is generally an enlarged version of FIG. 4, and is a functional explanatory diagram showing the function of the book support mechanism at the time of access. In FIG. 9, the same symbols as in FIG. 4 indicate the same parts or the same functions. As mentioned in the description of the first embodiment, the outer flexible finger 52 has a support member 53 that is substantially perpendicular to the air bearing surface 10 of the slider, joins the side surface 12 of the slider 1, and extends in the longitudinal direction. It is connected. The green color of the outer flexible finger portion 52, which is the connecting portion between the outer flexible finger portion 52 and the support member 53, is in the same plane as the plane that is parallel to the air bearing surface 10 and includes the center of gravity G15 of the slider. Therefore, the acceleration α during access is applied to the air bearing surface 1 via the outer flexible fingers 52.
It acts on the center of gravity G15 in a direction parallel to 0. This has caused problems in conventional magnetic head support mechanisms. The sinking Δh expressed by equation (9) can be made zero. This is because Qw (distance between the point of application of acceleration α and the slider center of gravity G) in equation (9) can be made zero.

This eliminates the contact between the slider and the disk caused by the sinking amount Δh caused by the acceleration α during access (due to the minimum flying height), which not only destroys the data stored on the disk surface. However, it is possible to eliminate data read/write malfunctions.

A second embodiment of the present invention is shown in FIGS. 10 to 14,
FIG. 10 is a front view of the magnetic head mechanism of the second embodiment;
1 is a top view thereof, FIG. 12 is a side view thereof, and FIG. 13 is a sectional view taken along line I-1 in FIG. 11.

FIG. 14 is a bottom view of the magnetic head mechanism viewed from the side of the air bearing surface of the slider. In FIG. 10, the same numbers as in FIG. 2 indicate the same members or the same functions.6 The difference between this embodiment and the first embodiment is that the gimbal 5 has - rectangular pieces. It is a flexible flat plate, and the first embodiment had two outer flexible fingers 5, but this embodiment has one flexible finger 520, and the gimbal 5 and The support member 53, which is the joint part with the slider 1,
As shown in FIGS. 2 to 14, it is provided in a bleed part 14 between two floating rails having a floating surface 10. For this reason.

In this embodiment, the gimbal 5 may be a single flexible rectangular flat plate, and there is no need to provide the slider support member 53 at right angles to the outer flexible fingers as in the first embodiment. By providing the support member 53 on the bleed part 14, a sufficient bonding area can be obtained for bonding the two, and the slider can be supported reliably, which significantly improves the productivity of the gimbal. At the same time, the reliability of the magnetic head support mechanism can be improved. Furthermore, the lower surface 440 of the joint table 44 provided on the load arm 4 and the bleed part 14 are aligned parallel to the slider air bearing surface 10 and the center of gravity of the slider l
15, it is possible to make the point of action of the acceleration generated during access coincide with the center of gravity G15 of the slider, and the slider will not sink, so the same effect as the first embodiment is expected. can do. In other words, contact between the slider and the disk can be prevented.

It is possible to eliminate not only the destruction of data on the magnetic disk but also malfunctions in reading/writing data.

Note that the gimbal 5 and the bleed portion 14 of the slider 1 can be easily joined by using an adhesive or the like.

A third embodiment of the invention is shown in FIGS. 15 to 19.

FIG. 15 is a front view of this embodiment, FIG. 16 is a top view thereof,
FIG. 17 is a side view thereof, FIG. 18 is a sectional view taken along line 1-1 in FIG. 16, and FIG. 19 is a diagram showing the support mechanism as seen from the air bearing surface side of the slider. In FIG. 15, the same numbers as in FIG. 2 indicate the same members or the same functions.

The difference between this embodiment and the first embodiment is that, as shown in FIG. The stepped back surface 11 is cut in the longitudinal direction until it is parallel to the surface 10 and flush with the surface containing the center of gravity G15 of the slider.
1 is provided with a gimbal support member 53. Therefore, the gimbal is formed from a single flat plate, and the support member 53
Unlike the first embodiment, it is not necessary to provide the support member 53 at right angles to the outer flexible fingers 52 in order to join the slider to the side surface of the slider. It becomes possible to improve the productivity of the mechanism. Furthermore, since the lower surface 440 of the joint table 44 and the back surface of the stepped portion on which the slider support member 53 is provided are formed on almost the same surface, the same effects as in the first embodiment can be expected. can.

A fourth embodiment is shown in FIG. In Figure 20, the second
Items with the same numbers as those in the drawings indicate the same members or the same functions. This embodiment differs from the first embodiment in that the load protrusion 45, which was provided on the load arm 4 in the first embodiment, is provided on the back surface 11 of the slider 1 separately from the load arm 4. be. Load protrusion 4
5 may be integrally molded with the slider 1 or may be provided independently.0 As in this embodiment, by forming the load protrusion 45 independently from the load arm 4, the load The productivity of the arm can be improved. Furthermore, the same effects as in the first embodiment can be expected in this embodiment as well.

A fifth embodiment of the present invention is shown in FIG. FIG. 21 is along the longitudinal center line of the load arm.

FIG. 3 is a cross-sectional view taken along a plane perpendicular to the air bearing surface.

Components with the same numbers as in FIG. 2 indicate the same members or the same functions.1 The difference between this embodiment and the first embodiment is that the first embodiment is integrally molded with the load arm 1. The point is that the provided joint table 44 is formed of a spacer (flat plate) separate from the load arm 1. The joint table 44 is joined to the load arm 4 by spot welding or adhesive. Therefore, it is no longer necessary to mold the joint stand integrally with the load arm, and the productivity of the load arm can be improved. Further, in this embodiment as well, the same effects as in the first embodiment can be expected.

A sixth embodiment of the present invention is shown in FIG. The same numbers as in FIG. 2 indicate the same members or the same functions. The difference between this embodiment and the first embodiment is that the load protrusion (not shown) is removed from the load arm.

This is a slider (negative pressure) that generates pressure lower than atmospheric pressure (negative pressure) between the slider's flying surface and the magnetic disk surface.
It is generally called a negative pressure type slider, for example,
9-18780), no loading protrusion is required. Since no load protrusion is provided, the productivity of the load arm can be improved, and it is suitable for supporting the negative pressure type slider. Further, in this embodiment as well, the same effects as in the first embodiment can be expected.

A seventh embodiment of the present invention is shown in FIG. 23. Items with the same numbers as in FIG. 2 indicate the same members or the same functions. The difference is that a support member 53, which is a connecting portion of the gimbal 5 with the slider 1, is provided on the inflow end surface 16 of the slider (the side where the air flow between the magnetic disk and the slider flows). Note that the outer flexible fingers 52 of the gimbal 5 are installed parallel to the air bearing surface 10 of the slider and in the same plane as the center of gravity G15 of the slider, as in the first embodiment. In this embodiment, the gimbal can be made smaller by using the inflow end face 16 of the slider 1 as the connecting portion between the gimbal 5 and the slider 1. At the same time, since the structure is simplified, productivity can be improved. Furthermore, by providing the outer flexible fingers 52 in a plane parallel to the air bearing surface 10 and including the center of gravity G15, the same effect as in the first embodiment can be expected. In this embodiment, the support member 53 is Although the outer flexible fingers 52 are provided closer to the air bearing surface 10 of the slider l, if the outer flexible fingers 52 are provided in a plane that is parallel to the E plane 10 and includes the center of gravity G15, this The back side 11
It may be set in

An eighth embodiment of the present invention is shown in FIGS. 24 to 27,
Fig. 24 is a front view of this embodiment seen from the load arm side, Fig. 25 is a side view thereof, and Fig. 26 is I-1 in Fig. 24.
27 is a bottom view of FIG. 24. The difference between this embodiment and the first embodiment is that the support member 53 of the gimbal 5 is moved from the slider as shown in FIGS. Back 1
This point is attached to a groove 110 provided in the longitudinal direction at the center of 1. The groove 110 is provided in the longitudinal direction of the slider from the inflow end face 16 to the outflow end face 13 of the slider, parallel to the air bearing surface of the slider, and the seat of the groove 110 is parallel to the air bearing surface 10 of the slider 1, and the center of gravity It is set in the same plane as the plane containing G15.

Further, in this embodiment, a load protrusion 45 is provided on the support member 53 of the gimbal 1. This eliminates the need to provide the load protrusion 45 on the load arm, improving the productivity of the load arm. In addition, the support member 5 of the gimbal 1
By providing the load protrusion 45 in the magnetic head support mechanism 3, the positioning accuracy of the load protrusion 45 is improved, and the point of application of the load generated by the load arm to the slider can be accurately controlled. Improve assembly accuracy.

This makes it possible to stabilize the quality of the product.

In addition, by providing a gimbal support member 53 in the groove 110 provided on the back surface of the slider l in a plane parallel to the air bearing surface 10 and parallel to the center of gravity G15, the point of application of acceleration during access is aligned with the center of gravity of the slider. Therefore, the same effects as in the first embodiment can be expected. Furthermore, in this embodiment as well, the flexible fingers of the gimbal can be composed of a single flexible flat plate as in the second embodiment, and it is also possible to improve the productivity of the gimbal. Become.

A ninth embodiment of the present invention is shown in FIG. The difference between this embodiment and the first embodiment is that the joint surface 440 of the joint base 44 provided on the load arm 4 with the gimbal 5 is parallel to the air bearing surface 10 of the slider and is in the same plane as the plane containing the center of gravity G. This is not the case. However, in this embodiment as well, the joint 521 between the outer flexible fingers 52 of the gimbal 5 and the support member 53 is parallel to the air bearing surface of the slider and is attached in the same plane as the plane containing the center of gravity G. There is. Therefore, the point of application of acceleration during access can be made to coincide with one center of gravity G, as in the first embodiment. As a result, substantially the same effects as in the first embodiment can be expected in this embodiment as well. moreover,
For the reasons mentioned above, even when the joint surface 440 of the joint table 44 is not provided parallel to the air bearing surface 10 and in the same plane as the center of gravity G15, as in the first embodiment, due to problems in manufacturing the load arm, Subsidence during access can be reduced. Furthermore, even in the case where the joining surface 440 is not provided strictly in the same plane as the plane that is parallel to the flying surface of the slider and includes the center of gravity G, the joining point 521 between the outer flexible finger and the support member can be By providing it as in the example, it is possible to expect the same effects as in the first embodiment, and therefore it is possible to significantly improve the productivity of the magnetic head support mechanism.

A tenth embodiment of the present invention is shown in FIG. Components with the same numbers as in FIG. - Not on the door arm,
Also in this embodiment, the load beam part of the load arm plays the role of the joint base of the first embodiment.
As in the ninth embodiment, the outer flexible fingers 52 and the support member 5
The junction point 521 with 3 is provided in a plane that is parallel to the air bearing surface 10 of the slider and that includes the center of gravity G15 of the slider, which is substantially the same plane. This makes it possible to match the point of application of acceleration during access to the position of the center of gravity of the slider, similar to the first embodiment.

The slider no longer sinks when accessing.

[Effects of the Invention] According to the present invention, in the magnetic head support mechanism, the load arm is provided with a joint table that is parallel to the air bearing surface of the slider and has the same plane as the center plane of the slider including the center of gravity of the slider,
One end of the gimbal is connected to the joint base, and the other end of the gimbal supports the slider on the center plane of the slider, so the point of action of the acceleration generated during access can be aligned with the center of gravity of the slider, and the It is possible to prevent a reduction in the flying height of the slider, thereby preventing destruction of data stored on the magnetic disk due to contact between the slider and the magnetic disk, and also preventing malfunctions in reading/writing by the magnetic head.

Furthermore, the gimbal can basically be a flat plate that is parallel to the air bearing surface of the slider and has the flexibility to extend in the slider direction.
Since there is no need to provide a step compared to the case shown in the figure, productivity of the gimbal can be significantly improved.

Furthermore, in other magnetic head support mechanisms of the present invention, that is, those in which there is a step between the joining surface of the joining table and the center plane of the slider, or in which the gimbal is directly connected to the load arm, the gimbal supports the slider at the center surface of the slider. Because of the support structure, the point of action of the acceleration generated during access can be aligned with the center of gravity of the slider, preventing a reduction in the flying height of the slider due to acceleration, and preventing contact between the slider and the magnetic disk as described above. It is possible to eliminate the destruction of data stored on the magnetic disk due to this, as well as the malfunction of reading/writing by the magnetic head.

Furthermore, it is now possible to provide a protrusion that transmits the load generated by the elastic part of the load arm from the load arm to the slider on the load beam part of the load arm or on the back of the slider, increasing the degree of freedom in design regarding the location of the protrusion. At the same time, it is possible to easily form protrusions that would be difficult to mass produce if provided on a thin plate such as a gimbal.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a magnetic disk device using the magnetic head support mechanism of the present invention, FIG. 2 is a front view of the first embodiment of the present invention, FIG. 3 is a top view thereof, and FIG. Side view, 5th
The figure is an I-1 sectional view of Figure 3, Figure 6 is a bottom view of Figure 2,
Figures 7A to 7C are configuration diagrams of a conventional support mechanism, Figure 8 is a model diagram modeling it from the perspective of vibration, Figure 9 is a functional explanatory diagram of the first embodiment, and Figure 10 is Second aspect of the present invention
11 is a top view thereof, FIG. 12 is a side view thereof, FIG. 13 is a 1-1 sectional view of FIG.
4 is a bottom view of FIG. 10, FIG. 15 is a front view of the third embodiment of the present invention, FIG. 16 is a top view thereof, FIG. 17 is a side view thereof, and FIG. 18 is a view of the third embodiment of the present invention. ! -! 19 is a bottom view of FIG. 15, and FIG. 20 is a front view of the fourth embodiment of the present invention. FIG. 21 is a sectional view showing the fifth embodiment of the present invention; FIG.
23 is a front view showing the seventh embodiment of the invention, FIG. 24 is a top view of the eighth embodiment of the invention, and FIG. 25 is a front view showing the sixth embodiment of the invention. The figure is its side view, No. 26
The figures are a 1-1 sectional view of FIG. 24, FIG. 27 is a front view of the eighth embodiment seen from the air bearing surface of the slider, FIG. 28 is a front view of the ninth embodiment of the present invention, and FIG. The figure is a front view showing a tenth embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Slider, 2...Magnetic head, 3...Magnetic head support mechanism, 4...Load arm, 5...Gimbal, 10...Air bearing surface, 11...Back surface, 12...・・・
Side surface, 13...Outflow end surface, 14...Bleed part, 1
5...Slider center of gravity, 40...Spacer, 41...
- Elastic part, 42... Loading beam part, 43... Flange part. 44...Joint stand, 45...Loading protrusion. 51...Joint portion, 52...Outer flexible finger portion, 53.
...Support member, 520...Flexible finger portion, 100...
Rotating shaft, 1o1... Magnetic disk, 102... Guide arm, 104... Magnet, 105... Coil, 1
07...Airtight container, 521...Joint point.

Claims (1)

[Claims] 1. A magnetic head is mounted and the magnetic head writes/writes.
A slider having an air bearing surface facing a magnetic disk to be read, a flexible gimbal extending substantially perpendicular to the access direction of the slider and supporting the slider at its tip, and a rear end of the gimbal attached. A magnetic head comprising a load arm consisting of a rigid loading beam section and an elastic section following the loading beam section, and driven in the access direction by an access mechanism connected via an end of the elastic section. In the support mechanism, a support portion having a parallel surface that includes the center of gravity of the slider and is in the same plane as a slider center plane that is parallel to the air bearing surface is provided at the tip of the gimbal;
The slider is bonded to the support part with a plane parallel to the slider center plane being the same plane, and the load beam part has a bonding surface that protrudes toward the air bearing surface and is substantially flush with the center plane of the slider. A magnetic head support mechanism, characterized in that a joining table is provided, and a rear end portion of the gimbal is joined to the joining surface. 2. Equipped with a magnetic head and writes/writes with the magnetic head.
A slider having an air bearing surface facing a magnetic disk to be read, a flexible gimbal extending substantially perpendicular to the access direction of the slider and supporting the slider at its tip, and a rear end of the gimbal attached. A magnetic head comprising a load arm consisting of a rigid loading beam section and an elastic section following the loading beam section, and driven in the access direction by an access mechanism connected via an end of the elastic section. In the support mechanism, a support portion having a parallel surface that includes the center of gravity of the slider and is in the same plane as a slider center plane that is parallel to the air bearing surface is provided at the tip of the gimbal;
The slider is bonded to the support part with a plane parallel to the slider center plane being the same plane, and the load beam part has a bonding surface that protrudes toward the air bearing surface and is parallel to the center plane of the slider and has a step. 1. A magnetic head support mechanism characterized in that a rear end portion connected to the bonding surface via a portion inclined from a parallel surface of the gimbal is bonded to the bonding table. 3. The magnetic head support mechanism according to claim 1 or 2, wherein the joint table is integrally molded with the load arm. 4. The magnetic head support mechanism according to claim 1 or 2, wherein the joining table and the load arm are joined to form a single unit. 5. Equipped with a magnetic head and writes/writes with the magnetic head.
A slider having an air bearing surface facing a magnetic disk to be read, a flexible gimbal extending substantially perpendicular to the access direction of the slider and supporting the slider at its tip, and a rear end of the gimbal attached. A magnetic head comprising a load arm consisting of a rigid loading beam section and an elastic section following the loading beam section, and driven in the access direction by an access mechanism connected via an end of the elastic section. In the support mechanism, a support portion having a parallel surface that includes the center of gravity of the slider and is on the same plane as a slider center plane that is parallel to the air bearing surface is provided at the tip of the gimbal, and the support portion has a parallel surface that is parallel to the slider center plane that is parallel to the slider center plane. A magnetic head support characterized in that the slider is bonded so that their surfaces are the same, and a rear end portion is bonded to the air bearing surface side of the load beam portion through a portion inclined from the gimbal parallel surface. mechanism. 6. The magnetic head support mechanism according to claim 1, wherein the support portion of the gimbal has a flange bent from a parallel plane. 7. The load arm has a tip portion of the load beam portion,
7. The magnetic head support mechanism according to claim 1, further comprising a protrusion that contacts and transmits a load generated by the elastic portion to a rear surface of the slider opposite to an air bearing surface. 8. The slider has a protrusion on the back surface opposite to the air bearing surface of the slider, which contacts the load beam and transmits the load generated in the elastic section.
6. The magnetic head support mechanism according to claim 6.