JPH0554580A - Magnetic head slider and magnetic disk device - Google Patents

Abstract

(57) [Summary] [Purpose] In a magnetic head slider, it suppresses a decrease in the flying height of the left and right slider rails with respect to the yaw angle. [Structure] The front slider rail 3 is tapered toward the outflow end. Further, the third slider rail 7 connecting the front and rear slider rails 3 and 4 is arranged obliquely with respect to the slider longitudinal direction. [Effect] With respect to the yaw angle, air does not flow into the slider rail 3 from the side surface, the magnitude of the pressure does not change, and the decrease in the flying height can be suppressed. Further, with respect to the yaw angle, the change in the moment around the central axis of the slider longitudinal direction caused by the movement of the pressure center on the slider rail 4 in the lateral direction of the slider is made asymmetric by making the slider rails asymmetrical. The magnitude of the pressure is changed to offset the change in the moment, and the left and right outflow end flying heights are kept constant.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head slider and a magnetic disk device, and more particularly to a magnetic head slider which floats up to a minute gap on a surface of a recording medium on which a magnetic disk device or the like is running. , A magnetic head slider and a magnetic disk device suitable for mass production.

[0002]

2. Description of the Related Art A conventional magnetic head slider for a magnetic disk device uses a so-called taper flat slider having a taper portion on the gas inflow side of the slider and a pair of slider rails following the taper portion. This taper flat slider generates a positive pressure against the air flow due to the rotation of the recording medium by the taper portion and the slider rail, and records by the balance between this positive pressure and the pressing load by the support spring from the slider back surface. It is designed to float on the medium.

In order to increase the recording density, the smaller the clearance between the magnetic head attached to the rear end of the slider and the recording medium, the better. Currently, a minute clearance of about 0.1 to 0.3 μm is realized. Further, in order to further reduce the flying height in the future, it is necessary to reduce the surface roughness of the slider rail surface and the recording medium, but in the current magnetic disk device, the slider and the recording medium contact each other when the device is stopped, A so-called contact start / stop system (hereinafter abbreviated as CS / S) in which the slider and the recording medium slide when the device starts to operate is used. Adhesion between the recording medium and the slider when the device is stopped and abrasion during sliding etc. There is a problem.

In order to avoid this problem, if the pressing load of the support spring is reduced, the rigidity of the air film between the recording medium and the slider is reduced and the flying stability is deteriorated. For this reason, recently, a partition called a cross rail connecting the rails on both sides of the slider is provided, and the air flow whose pressure has risen at the slider inflow end spreads immediately after this cross rail and becomes lower than the ambient pressure (hereinafter, A negative pressure type slider has been proposed in which a suction force by a negative pressure is used as a part of the pressing load. This negative pressure type slider reduces the pressure load of the support spring to reduce the risk of adhesion when the device is stopped and the wear caused by sliding at the start of start-up, and the suction force of negative pressure during steady rotation of the recording medium. Thereby, high air film rigidity can be obtained. Further, since the suction force due to the negative pressure increases with the rotation speed of the recording medium, the suction force due to the negative pressure is small at a low rotation speed at the start of the device, and the slider is quickly lifted, so that the slider slides on the recording medium. The distance can be shortened, and the suction force is increased in the high rotation range to suppress an increase in the flying height.

Further, zone bit recording (recording density varies depending on the disk radial position), which is a recording method capable of increasing the recording capacity of a magnetic disk device, and an MR head (magnetic resistance generated in the head at the time of recording / reading) are known. It is necessary to keep the flying height of the head constant over the entire disk, and the characteristic of the negative pressure slider that the change in the flying height in the medium high speed rotation range of the recording medium is small is suitable for the above recording method. It is getting attention.

On the other hand, in a rotary actuator type magnetic disk device, the angle formed by the longitudinal direction of the slider and the inflow direction of the air flow (hereinafter referred to as the yaw angle) differs depending on the slider position on the disk. Also in the linear actuator type magnetic disk device, when the slider moves in the direction perpendicular to the tangential direction of the disk, an airflow flows in from the side surface of the slider to generate an apparent yaw angle. Conventional taper flat sliders and negative pressure sliders have the drawback that as the yaw angle increases, the inflow of air from the side surface of the slider rail increases, the positive pressure generation force behind the slider rail decreases, and the flying height decreases. It was To solve this problem, for example, as disclosed in Japanese Patent Laid-Open No. 60-101781, the width of the central portion of the slider rail in the longitudinal direction is made narrower than the width of both ends of the rail so that the high air pressure portion is divided into front and rear to reduce mutual dependence. A method of reducing the decrease in the flying height due to the yaw angle has been proposed.

[0007]

FIG. 26 is a perspective view of a conventional example, FIG. 27 is a front view, and FIG. 28 is a side sectional view. The slider 1 has a taper portion 2, a front slider rail 3, and a rear slider rail. 4, a magnetic head 6, a negative pressure pocket 8, a cross rail 10 and the like are provided. As shown in the figure, when the conventional method is applied to a taper flat slider, as shown in FIG. 29, the right and left sides of the front slider rail 3 are divided into the front right portion 3a, the front left portion 3b, and the rear slider rail. If the left and right sides of 4 are a rear right portion 4a, a rear left portion 4b, and a bleed portion 5, when the airflow F flows in at a yaw angle of B degrees, as shown in FIG. 31, the peak pressure at the outlet end is the II side. And the moment around the central axis in the slider longitudinal direction due to the left and right pressure acts in the direction to lift the outflow end on the II side,
There is a problem that the slider tilts around the central axis in the longitudinal direction. Note that FIG. 30 is a side view of FIG. 29, and the slider 1 runs on the recording medium 9.

Further, when the conventional method is applied to the slider utilizing negative pressure, the airflow that has become negative pressure due to the negative pressure pocket 8 with respect to the airflow F flowing in at the yaw angle B degrees as shown in FIG. As it flows into the slider rail 4a (rear right part), as shown in FIG. 33, the leeward side (II
The pressure on the rear side of the slider rail on the side) is lower than the pressure on the rear side of the slider rail on the windward side (I side). At this time, the pressure peak at the outflow end moves to the II side, and the moment around the central axis in the slider longitudinal direction due to the left and right pressure acts in the direction to lift the outflow end on the II side. If it is large, there is a problem that the flying height decreases. Further, the negative pressure type slider has a problem in that dust is likely to be accumulated after the taper portion 2 at the inflow end or the cross rail 10 where the air flow spreads and becomes a flow.

On the other hand, in the current rotary type 5-inch magnetic disk device, the yaw angle is about 15 degrees at maximum.
The current slider size is about 3 mm in length and 2.5 mm in width (for example, in the drawing of FIG. 21, L and W in the drawing correspond). The length lt of the tapered portion 2 is 0.4 mm, and 1
In order to suppress the decrease in the flying height for a yaw angle of 5 degrees,
In Fig. 1, if the angle A of the side edge of the slider rail with respect to the longitudinal direction is 15 degrees, the slider rail width lr is 0.7 m.
It will be about m. The slider rail width of the current taper flat slider is about 0.4 mm, and the rail width cannot be inclined by 15 degrees. When the angle A is decreased, the effect of preventing the flying height from decreasing with respect to the yaw angle becomes small.

On the contrary, if the slider rail width lr is increased to reduce the width of the slider rail central portion, the slider rail area becomes large and the positive pressure against the spring load becomes excessive. Increasing the spring load causes problems such as adhesion between the recording medium and the slider and abrasion during CS / S as described above. The slider tends to be smaller and lighter in order to improve the followability to the recording medium. However, the air film rigidity around the central axis in the slider longitudinal direction (referred to as rolling rigidity) is measured from the widthwise center of the slider rail. Since it is proportional to the square of the distance (ls in the drawing of FIG. 21) to the center of the slider in the longitudinal direction, if the slider size is made smaller and the slider rail width (lr in the drawing of FIG. 21) is made larger, ls becomes smaller and the rolling rigidity becomes smaller. There is a problem that Further, since the negative pressure of the negative pressure slider is proportional to the area of the negative pressure pocket 8, there is a possibility that sufficient negative pressure cannot be obtained if the slider rail width lr is increased.

An object of the present invention is to suppress a decrease in the flying height with respect to changes in the yaw angle, and in particular, to make the difference in the flying height between the outflow ends of the left and right slider rails small, and to manufacture the magnetic head slider and the magnetic head slider. To provide a disk device. Another object of the present invention is to provide a magnetic head slider and a magnetic disk device in which a decrease in flying height is suppressed with respect to a change in yaw angle, a difference in flying height between left and right slider rail outflows is particularly reduced, and dust is less likely to accumulate. .. Another object of the present invention is to provide a magnetic head slider and a magnetic disk device capable of effectively suppressing a decrease in flying height with respect to a change in yaw angle without generating excessive positive pressure by the slider rail.

[0012]

In order to achieve the above object, a magnetic head slider of the present invention is arranged so as to face a rotating recording medium, and an air inflow end with respect to a gas flow accompanying the rotation of the recording medium. In a magnetic head slider having a pair of slider rails each having a taper portion, the slider rail is divided into a front portion and a rear portion, the front slider rail is tapered toward an outflow end, and the rear slider rail is outflow end. And a third slider rail connecting the front and rear slider rails is provided. The pair of third slider rails extends inward from the front slider rail side to the rear slider rail side. The feature is that they are arranged so as to approach each other.

Further, the slider rail is divided into a front portion and a rear portion, the front slider rail has a triangular flat surface that tapers toward the outflow end, and the rear slider rail has a triangular flat surface that widens toward the outflow end. Further, the rear portion of the inner side wall of the front slider rail and the front portion of the outer side wall of the rear slider rail are arranged so as to be substantially on the same plane.

The slider rail is divided into a front portion and a rear portion, the front slider rail is tapered toward the outflow end, and the rear slider rail is widened toward the outflow end. A rear portion of an inner side wall of the front slider rail and a front portion of an outer side wall of the rear slider rail, and a rear portion of an outer side wall of the front slider rail and a front portion of an inner side wall of the rear slider rail, respectively. It is characterized in that they are arranged so as to be substantially on the same plane.

Furthermore, the magnetic head slider of the present invention comprises:
A pair of slider rails that are arranged so as to face the rotating recording medium and have a taper portion at the air inflow end with respect to the gas flow accompanying the rotation of the recording medium, and a cross rail that connects the taper portion or the pair of slider rails. In a magnetic head slider having a negative pressure pocket surrounded by the pair of slider rails, the slider rail is divided into a front portion and a rear portion, and the front slider rail is tapered toward an outflow end, and a rear portion is formed. The slider rail has a shape that widens toward the outflow end, and a third slider rail that connects the front and rear slider rails is provided. The pair of third slider rails extends from the front slider rail side to the rear slider rail side. It is characterized in that they are arranged so as to be separated from each other toward the outside of the slider.

Further, the slider rail is divided into a front portion and a rear portion, the front slider rail has a triangular flat surface that tapers toward the outflow end, and the rear slider rail has a triangular flat surface that widens toward the outflow end. Further, the rear portion of the outer side wall of the front slider rail and the front portion of the inner side wall of the rear slider rail are arranged so as to be substantially on the same plane.

The slider rail is divided into a front portion and a rear portion, the front slider rail is tapered toward the outflow end, and the rear slider rail is widened toward the outflow end. A rear portion of an inner side wall of the front slider rail and a front portion of an outer side wall of the rear slider rail, and a rear portion of an outer side wall of the front slider rail and a front portion of an inner side wall of the rear slider rail, respectively. It is characterized in that they are arranged so as to be substantially on the same plane.

The slider rail is divided into a front portion and a rear portion, the front slider rail is tapered toward the outflow end, and the rear slider rail is widened toward the outflow end. A rear portion of an inner side wall of the front slider rail and a front portion of an outer side wall of the rear slider rail, and a rear portion of an outer side wall of the front slider rail and a front portion of an inner side wall of the rear slider rail, respectively. The cross rail has a wall surface that is continuous with the inner side wall of the front slider rail and that extends from the air inflow end to the negative pressure pocket. It is characterized by.

Further, the magnetic disk device of the present invention is
These magnetic head sliders are mounted. ..

[0020]

According to the above construction, the width of the pressure distribution on each slider rail due to the yaw angle moves in the width direction by narrowing the width of the central portion of the pair of slider rails and making them asymmetric with respect to the central axis. At the same time, the magnitude of the pressure on the left and right slider rails can be changed to balance the moment about the central axis in the slider longitudinal direction and keep the flying height constant. Furthermore, by narrowing the width of the center of the slider rail and providing a groove along the slider rail at the taper at the inflow end, the negative pressure pocket is passed through the groove on the leeward slider rail with respect to the yaw angle. It is possible to suppress a decrease in the floating amount at the outflow end through an air flow having a small amount of air and at the same time reduce the accumulation of dust. Further, when the shape of both edges of the slider rail is determined by arranging the inner or outer side surface of the front slider rail and the outer or inner side surface of the rear slider rail on the same plane, respectively, Since the area of the slider rail can be minimized, it is possible to effectively suppress the decrease in the flying height due to the yaw angle without generating an excessive positive pressure.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be specifically described below with reference to the drawings. It should be noted that the same structural parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted. (First Embodiment) FIG. 1 is a perspective view of a first embodiment of the present invention. In the figure, the taper portion 2 provided at the inflow end of the slider 1 has the effect of compressing the inflowing airflow. The angle A formed by the side surfaces of the front slider rail 3 and the rear slider rail 4 and the slider longitudinal direction is approximately the same as the yaw angle expected when the present slider is mounted in a magnetic disk device. Usually, it is about 5 to 15 degrees. Slider 1
A bleed section 5 and a magnetic head 6 for reading and writing records.
Is provided. The slider rail 7 is a third slider rail connecting the front and rear slider rails 3 and 4,
The front slider rail 3 and the rear slider rail 4 are flush with each other. The third slider rail 7 is arranged toward the inside of the slider 1 from the front slider rail 3 side to the rear slider rail 4 side.

The effects of the first embodiment will be described with reference to FIGS. For the air flow F flowing in at a yaw angle of B degrees,
Since the front slider rails 3a (front right portion) and 3b (front left portion) are tapered toward the outflow end, there is no inflow of air from the rail side surface, and the slider rails 3a,
The magnitude of the pressure generated on 3b does not change depending on the presence or absence of the yaw angle. The rear slider rail 4b (rear left portion) has a front slider rail 3b and a third slider rail 7b.
Since an air flow higher than the atmospheric pressure flows in through the (left side portion), the pressure on the rear slider rail 4b becomes higher than that on the rear slider rail 4a (rear right portion). Therefore,
As shown in FIG. 3, the influence of the movement of the pressure peak on the moment around the slider central axis and the influence of the pressure difference between the left and right slider rails on the moment are offset to make the flying height of the left and right outflow ends constant. can do.

(Second Embodiment) FIGS. 4 and 5 are a front view and a side view of a second embodiment of the present invention. The front slider rail 3 has a triangular shape tapering toward the outflow end, and the rear slider rail 4 has a divergent triangular shape. By arranging the inner rear surface of the front slider rail 3 and the outer front surface of the rear slider rail 4 in contact with each other, the same effect as that of the third slider rail 7 of the first embodiment can be obtained.

(Third Embodiment) FIG. 6 is a perspective view of a third embodiment of the present invention. The negative pressure pocket 8 is surrounded by the taper portion 2 and the slider rails 3, 4 and 7, and the air flow passing through the taper portion 2 becomes a negative pressure in the negative pressure pocket 8. When the airflow F flows at a yaw angle of B degrees as shown in FIG. 7, after the taper portion 2 is passed through the rear slider rail 4a,
An air flow having a negative pressure in the negative pressure pocket 8 flows in, but at the same time, an air flow having a pressure higher than the atmospheric pressure by passing through the front slider rail 3a and the third slider rail 7a (right side) is at the rear. Since the ratio of inflow to the slider rail 4a is higher than that of the other rear slider rail 4b, as shown in FIG. 8, the left and right rear slider rails 4a, 4b are provided.
The pressure above can be about the same. By appropriately adjusting the widths of the third slider rails 7a and 7b and the inclination with respect to the slider longitudinal direction, the influence of the pressure peak moving to the II side and the influence of the left and right pressure differences are canceled out, and the yaw angle is increased. The floating amount at the outflow end can be made almost constant. Further, by forming the negative pressure step and the outside of the slider rail on the same plane, molding can be performed by a single etching process, so that mass production can be performed with high processing accuracy.

(Fourth Embodiment) FIG. 9 is a front view of the fourth embodiment, and FIG. 10 is a side view. The front slider rail 3 has a triangular shape tapering toward the outflow end, and the rear slider rail 4 has a divergent triangular shape. Front slider rail 3
By arranging the rear outer surface of the rear slider rail 4 and the front inner surface of the rear slider rail 4 in contact with each other, the same effect as that of the third slider rail 7 of the third embodiment can be obtained.

(Fifth Embodiment) FIG. 11 is a front view of the fifth embodiment, and FIG. 12 is a side view thereof. The negative pressure pocket 8 is formed by the cross rail 10 without the tapered portion at the center of the slider inflow end.

(Sixth Embodiment) FIG. 13 is a front view of a sixth embodiment, and FIG. 14 is a side view thereof. A cross rail 10 is provided between the taper portion 2 and the negative pressure pocket 8.
According to this embodiment, it is possible to eliminate the influence of the etching processing error on the tapered portion 2.

(Seventh Embodiment) FIG. 15 is a front view of the seventh embodiment, and FIG. 16 is a side view thereof. In this example,
The front and rear slider rails 3 and 4 are formed by curves. Others are the same as those in the sixth embodiment.

(Eighth Embodiment) FIG. 17 is a perspective view of an eighth embodiment of the present invention. In this embodiment, a groove 11 communicating with the negative pressure pocket 8 from the slider inflow end is provided. One side wall of the groove 11 is provided on the front slider rail 3
Of the groove 11 and the bottom of the groove 11 is flush with the negative pressure pocket 8. According to this configuration, as shown in FIG. 18, the air flow F having a yaw angle of B degrees passes through the groove 11 and flows into the slider rail 4a on the leeward side and is less influenced by negative pressure. As shown in FIG. 19, the pressure difference on the left and right rails is reduced, and the same effect as in the third embodiment can be obtained. Further, it is possible to prevent dust from accumulating after the tapered portion 2c (central tapered portion) at the inflow end due to the flow through the groove 11. Negative pressure pocket 8, groove 1
By making the outer surfaces of 1 and the slider rails 3 and 4 flush with each other, molding can be performed by a single etching process, and mass productivity is excellent.

(Ninth Embodiment) FIG. 20 is a perspective view of a ninth embodiment of the present invention. The purpose of this embodiment is to suppress the decrease in the flying height with respect to the yaw angle without excessively increasing the positive pressure and reducing the rolling rigidity as much as possible. As shown in FIG. 21, in order to suppress the decrease in the flying height due to the yaw angle, when the width of the central portion of the slider rail is narrowed, the slider rail is divided into front and rear, and the front and rear slider rails 3 and 4 are arranged in contact with each other. This minimizes the slider rail area. At this time, if the slider sizes L and W are kept constant, the area of the negative pressure pocket 8 is maximized, and the suction force by the negative pressure can be effectively used. At the same time, the distance ls from the center of the slider rail width direction to the center of the slider longitudinal direction is maximized, and the rolling rigidity can be increased more than when the width is left at the center of the slider longitudinal direction.

(Tenth Embodiment) FIGS. 22 and 23 are a front view and a side view of a tenth embodiment of the present invention. By making the portion where the front slider rail 3 and the rear slider rail 4 contact each other have a minute width S, almost the same effect as that of the ninth embodiment can be obtained, and the workability is improved as compared with the case of contacting at one point. You can

(Application Example 1) FIG. 24 is a plan sectional view of a linear rotary disk storage device equipped with a head slider according to the present invention. A guide arm 13 is coupled to the carriage 12, a transducer support device 14 is connected to the guide arm 13, and the flying head slider 1 is mounted on the tip of the transducer support device 14. The slider 1 is driven by the voice coil motor 15,
It moves back and forth in the radial direction of the rotating disk storage medium 16. According to this example, since the change in the flying height of the slider is small and the flying height is stable with respect to the change in the yaw angle, the flying height of the slider can be reduced, and the high-density storage of the storage medium 16 can be realized.

(Application Example 2) FIG. 25 shows another application example of the present invention, and is a partially fragmented perspective view of an in-line type rotary disk storage device in which the floating head slider 1 of the present invention is mounted.
1 shows a floating head slider 1 of the present invention mounted on the tip of a transducer support device 14 connected to a carriage 12. Also in this example, the same effect as that of FIG. 24 was obtained.

[0034]

As described above, according to the present invention,
By narrowing the width near the center of the slider rails and making each slider rail asymmetric with respect to its center axis, it is possible to suppress a decrease in the flying height of the slider rail outflow ends with respect to the yaw angle. Can be provided. Further, by applying the present invention to the negative pressure slider, the flying height of the slider rail outflow ends on the left and right can be made substantially constant regardless of the velocity of the inflowing gas and the yaw angle.
Zone bit recording or the introduction of an MR head can be realized, and a high recording density of the recording medium can be achieved.

Further, by providing a groove reaching the negative pressure pocket at the slider inflow end, it is possible to prevent dust from accumulating in the negative pressure pocket in addition to the above effect. Further, it is possible to provide a magnetic head slider that can suppress a decrease in the flying height due to a yaw angle without increasing the positive pressure excessively. Further, the slider can be processed by one etching process, which has an excellent effect that the slider can be mass-produced with high processing accuracy.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of the first embodiment of the present invention.

FIG. 3 is a diagram showing a pressure distribution in the I-II cross section with respect to the air flow F in FIG.

FIG. 4 is a front view of the second embodiment of the present invention.

FIG. 5 is a side view of the second embodiment of the present invention.

FIG. 6 is a perspective view of a third embodiment of the present invention.

FIG. 7 is an explanatory diagram of a third embodiment of the present invention.

8 is a diagram showing a pressure distribution in the I-II cross section with respect to the air flow F in FIG. 7.

FIG. 9 is a front view of the fourth embodiment of the present invention.

FIG. 10 is a side view of the fourth embodiment of the present invention.

FIG. 11 is a front view of the fifth embodiment of the present invention.

FIG. 12 is a side view of the fifth embodiment of the present invention.

FIG. 13 is a front view of a sixth embodiment of the present invention.

FIG. 14 is a side view of the sixth embodiment of the present invention.

FIG. 15 is a front view of the seventh embodiment of the present invention.

FIG. 16 is a side view of the seventh embodiment of the present invention.

FIG. 17 is a perspective view of an eighth embodiment of the present invention.

FIG. 18 is an explanatory diagram of an eighth embodiment of the present invention.

FIG. 19 shows I-II for the air flow F in FIG.
The figure which shows the pressure distribution in a cross section.

FIG. 20 is a perspective view of a ninth embodiment of the present invention.

FIG. 21 is an explanatory diagram of the ninth embodiment of the present invention.

FIG. 22 is a front view of the tenth embodiment of the present invention.

FIG. 23 is a side view of the tenth embodiment of the present invention.

FIG. 24 is a diagram showing a first application example of the present invention.

FIG. 25 is a diagram showing a second application example of the present invention.

FIG. 26 is a perspective view of a conventional example.

FIG. 27 is a front view of a conventional example of a negative pressure slider.

FIG. 28 is a side view of a conventional example of a negative pressure slider.

FIG. 29 is a front view for explaining the effect of the conventional example.

FIG. 30 is a side view of FIG. 29.

FIG. 31 is a view of I-II with respect to the air flow F in FIG. 29.
The figure which shows the pressure distribution in a cross section.

FIG. 32 is an explanatory diagram of an effect of a conventional example in a negative pressure slider.

FIG. 33 shows I-II for the air flow F in FIG. 32.
The figure which shows the pressure distribution in a cross section.

[Explanation of symbols]

 1 Slider 2, 2a, 2b, 2c Tapered portion 3, 3a, 3b Front slider rail 4, 4a, 4b Rear slider rail 5 Bleed portion 6 Magnetic head 7, 7a, 7b Third slider rail 8 Negative pressure pocket 9 Memory Medium 10 Cross rail 11 Groove 12 Carriage 13 Guide arm 14 Transducer support device 15 Voice coil motor 16 Disc storage medium

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mikio Tokuyama 502 Jinritsucho, Tsuchiura City, Ibaraki Prefecture Hiritsu Seisakusho Co., Ltd.Mechanical Research Laboratory (72) Inventor Tsubo Saito 2880 Kokufutsu, Odawara, Kanagawa Pref.Hitachi Ltd. Odawara Plant (72) Inventor Masaaki Matsumoto 1-280 Higashi Koikekubo, Kokubunji, Tokyo Inside Hitachi Central Research Laboratory

Claims (8)

[Claims] 1. A recording medium arranged to face a rotating recording medium,
In a magnetic head slider having a pair of slider rails having a taper portion at an air inflow end with respect to a gas flow accompanying the rotation of the recording medium, the slider rail is divided into a front portion and a rear portion, and the front slider rail has an outflow end. The rear slider rail is tapered toward the outflow end, and a third slider rail connecting the front and rear slider rails is provided. A magnetic head slider, wherein the magnetic head sliders are arranged so as to approach each other toward the inside of the slider from the side of the lower slider rail to the side of the rear slider rail. 2. The recording medium is arranged to face a rotating recording medium,
In a magnetic head slider having a pair of slider rails having a taper portion at an air inflow end with respect to a gas flow accompanying the rotation of the recording medium, the slider rail is divided into a front portion and a rear portion, and the front slider rail has an outflow end. The rear slider rail has a triangular plane that tapers toward the outflow end, and the rear side of the inner side wall of the front slider rail and the front side of the outer side wall of the rear slider rail are tapered. The magnetic head slider is characterized in that and are arranged so as to be substantially on the same plane. 3. A recording medium arranged to face the rotating recording medium,
In a magnetic head slider having a pair of slider rails having a taper portion at an air inflow end with respect to a gas flow accompanying the rotation of the recording medium, the slider rail is divided into a front portion and a rear portion, and the front slider rail has an outflow end. The rear slider rail is tapered toward the outflow end, and the rear portion of the inner side wall of the front slider rail and the front portion of the outer side wall of the rear slider rail are A magnetic head slider, characterized in that the rear portion of the outer side wall of the front slider rail and the front portion of the inner side wall of the rear slider rail are arranged substantially on the same plane. 4. Arranged to face the rotating recording medium,
A pair of slider rails having a taper portion at an air inflow end with respect to a gas flow accompanying the rotation of the recording medium; and a cross rail connecting the taper portion or the pair of slider rails.
In a magnetic head slider having a negative pressure pocket surrounded by a pair of slider rails, the slider rail is divided into a front portion and a rear portion, and the front slider rail is tapered toward an outflow end, and the rear slider rail is formed. Has a shape that widens toward the outflow end, and is provided with a third slider rail that connects the front and rear slider rails. The pair of third slider rails extends outside the slider from the front slider rail side to the rear slider rail side. A magnetic head slider, wherein the magnetic head sliders are arranged so as to be separated from each other toward each other. 5. A recording medium arranged to face the rotating recording medium,
A pair of slider rails having a taper portion at an air inflow end with respect to a gas flow accompanying the rotation of the recording medium; and a cross rail connecting the taper portion or the pair of slider rails.
In a magnetic head slider having a negative pressure pocket surrounded by a pair of slider rails, the slider rail is divided into a front portion and a rear portion, and the front slider rail is formed into a triangular flat surface which tapers toward an outflow end, and a rear slider. The rail is a triangular flat surface that widens toward the outflow end, and the rear portion of the outer side wall of the front slider rail and the front portion of the inner side wall of the rear slider rail are arranged substantially on the same plane. A magnetic head slider characterized in that 6. The recording medium is arranged so as to face the rotating recording medium,
A pair of slider rails having a taper portion at an air inflow end with respect to a gas flow accompanying the rotation of the recording medium; and a cross rail connecting the taper portion or the pair of slider rails.
In a magnetic head slider having a negative pressure pocket surrounded by a pair of slider rails, the slider rail is divided into a front portion and a rear portion, and the front slider rail is tapered toward an outflow end, and the rear slider rail is formed. Has a shape that widens toward the outflow end, and a rear portion of an inner side wall of the front slider rail and a front portion of an outer side wall of the rear slider rail, and a rear portion of an outer side wall of the front slider rail. A magnetic head slider, wherein the rear slider rail and the front portion of the inner side wall are arranged so as to be substantially flush with each other. 7. The recording medium is arranged so as to face the rotating recording medium,
A pair of slider rails having a taper portion at an air inflow end with respect to a gas flow accompanying the rotation of the recording medium; and a cross rail connecting the taper portion or the pair of slider rails.
In a magnetic head slider having a negative pressure pocket surrounded by a pair of slider rails, the slider rail is divided into a front portion and a rear portion, and the front slider rail is tapered toward an outflow end, and the rear slider rail is formed. Has a shape that widens toward the outflow end, and a rear portion of an inner side wall of the front slider rail and a front portion of an outer side wall of the rear slider rail, and a rear portion of an outer side wall of the front slider rail. The rear portion of the inner surface of the rear slider rail and the front portion are arranged so as to be substantially on the same plane, and the cross rail has a wall surface continuous with the inner surface of the front slider rail.
A magnetic head slider having a groove extending from the air inflow end to the negative pressure pocket. 8. A magnetic disk device equipped with the magnetic head slider according to claim 1. Description: