JP2549794Y2 - Suspension for flying magnetic head device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension for a floating type magnetic head device used for a magnetic disk device or the like.

[0002]

2. Description of the Related Art Conventionally, a method for holding a floating magnetic head has been proposed in which a gimbal fixed to a cantilevered load arm is provided so that the longitudinal axis of the slider and the longitudinal axis of the load arm are substantially perpendicular to each other. There are two types: a standard type in which the back surface of the slider is bonded to the gimbal, and an in-line type in which the back surface of the slider is bonded to the gimbal so that the longitudinal axis of the slider is substantially parallel to the longitudinal axis of the load arm. Many small-sized magnetic disk devices employ an in-line method which is advantageous in terms of space. However, in the in-line system as shown in the rear view of the gimbal portion in FIG. 9, since the adhesive layer 5 shown in FIG. 10 which is a side view thereof is formed over the entire area in the longitudinal direction of the slider, the adhesive force at both ends of the slider is obtained. As a result, the deformation as shown in the side view of FIG. 11 occurs, causing deterioration of the electromagnetic conversion characteristics and instability of the flying characteristics. Heretofore, in order to solve the above-mentioned problem, the bonding range has been limited by a case of providing a groove on the back surface of the slider (Japanese Patent Laid-Open No. 140579/1985) or a method of providing a step or a groove on the gimbal bonding surface. Also, as shown in the rear view of the gimbal portion in FIG. 12, the suspension has a structure in which the longitudinal axis of the gimbal and the longitudinal axis of the load arm are orthogonal to each other. A case has also been reported in which the above-mentioned problem is solved by bonding such that the axis is perpendicular to the axis. (USP
4868694)

[0003]

[Problems to be solved by the invention] However, in the method of providing a groove on the slider or the gimbal bonding surface,
In recent years, it has been difficult to provide sufficient grooves or steps due to the reduced strength of the slider and gimbal bonding surfaces, which are tending to be smaller, lighter, and thinner, and are difficult to manufacture. FIG.
4 and 15 show actual states of the slider. For example, the total thickness is 0.6 mm, and the thin portion is 0.2 mm. It is understood that it is difficult to provide a groove in this portion in terms of processing. Also, the thickness of the gimbal bonding surface is usually 0.0
8 mm or less, and has the same difficulty. FIG.
In a suspension in which the longitudinal axis of the load arm and the longitudinal axis of the gimbal are substantially perpendicular to each other, the electromagnetic conversion characteristics can be prevented from deteriorating due to the slider deformation, but as shown in FIG. There has been a problem that the floating posture in the slider short direction in the floating state becomes unstable due to the angle θ between the load surface and the bonding surface formed by the cantilever and the protrusions and the bonding surface. In order to solve the above problems, an object of the present invention is to prevent deformation of a slider due to adhesion to a gimbal, and to easily realize stabilization of electromagnetic conversion characteristics and flying characteristics.

[0004]

In order to achieve the above object, a suspension for a floating type magnetic head device according to the present invention has a gimbal having a bonding surface having a width greater than a width of a slider in a lateral direction and a depth greater than a width of the slider. 1/4 of the length in the longitudinal direction of the slider
The size of the gimbal bonding portion with respect to the back surface of the slider has a U-shaped opening as described above, and the length of the slider in the longitudinal direction is 以下 or less of the longitudinal length of the slider, and the length of the slider in the transverse direction is shorter. Is approximately equal to the length of the slider in the lateral direction. Further, the gimbal having the above structure is removed by removing two outriggers, a flat portion for fixing the gimbal to the load arm is disposed at the tip of the gimbal and connected to a U-shaped opening, and an adhesive having a U-shaped opening is provided. A protrusion extending in the longitudinal direction of the slider may be provided near the center of the surface.

[0005]

According to the above means, when the slider and the gimbal are bonded, the U-shaped opening provided on the bonding surface prevents the adhesive resin from flowing around the slider tip and the electromagnetic transducer, thereby preventing the slider from moving in the longitudinal direction. Deformation can be prevented, stabilizing the flying characteristics, and preventing deterioration due to the adhesive force of the electromagnetic transducer. Further, by providing the convex portions, the bonding area can be increased and the bonding strength can be increased.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a rear view showing a bonded state of a gimbal portion and a slider of a suspension showing one embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a view seen from a front end side. In FIG. 1, the adhesive surface 2 has a U-shaped opening so as to prevent the tip of the slider 1 and the adhesive resin from flowing into the electromagnetic transducer 7, and the width W of the opening is shorter than the slider. The width H in the hand direction and the depth H are １ ／ or more of the length B in the longitudinal direction of the slider.
The length L of the slider in the longitudinal direction is less than half the length A of the slider in the longitudinal direction, and the length B of the slider in the lateral direction is substantially equal to the length A of the slider in the lateral direction. It is characterized by having done.

FIGS. 4, 5 and 6 show another embodiment of the present invention. FIGS. 4, 5 and 6 show the same as FIGS. 1, 2 and 3, respectively. They are a rear view, a side view, and a view seen from the tip side, respectively. In FIG.
The two outriggers of the gimbal are removed, and the flat portion 4 for fixing the gimbal to the load arm is arranged at the tip of the gimbal, and is connected to the U-shaped opening. 7 and 8 also show another embodiment of the present invention, both of which are shown in FIGS.
FIG. 5 is a rear view similar to FIG. 4. FIGS. 7 and 8 are provided with a protrusion 8 extending in the longitudinal direction of the slider near the center of the bonding surface of the embodiment shown in FIGS.

[0008]

[Effects of the Invention] As described above, according to the present invention,
In the suspension for the floating magnetic head device, deformation of the slider due to adhesion to the gimbal can be prevented, and the electromagnetic conversion characteristics and the floating characteristics can be easily stabilized.

[Brief description of the drawings]

FIG. 1 is a rear view of a gimbal portion of a suspension and a slider in a bonded state according to an embodiment of the present invention.

FIG. 2 is a side view of the suspension according to the embodiment of the present invention, in which a gimbal portion and a slider are bonded.

FIG. 3 is a view showing the bonding state of the gimbal portion of the suspension and the slider, as viewed from the gimbal tip, showing one embodiment of the present invention;

FIG. 4 is a rear view showing a bonded state of a gimbal portion and a slider of a suspension according to another embodiment of the present invention.

FIG. 5 is a side view of a suspension according to another embodiment of the present invention, in which a gimbal portion and a slider are bonded.

FIG. 6 is a view showing a bonding state of a gimbal portion and a slider of a suspension according to another embodiment of the present invention, as viewed from a gimbal tip.

FIG. 7 is a rear view showing a gimbal portion of a suspension and a slider in a bonded state according to another embodiment of the present invention.

FIG. 8 is a rear view showing a bonded state of a gimbal portion and a slider of a suspension according to another embodiment of the present invention.

FIG. 9 is a rear view of a gimbal portion and a slider of a conventional in-line type suspension in a bonded state.

FIG. 10 is a side view of a gimbal portion of a conventional in-line type suspension and a bonded state of a slider.

FIG. 11 is a side view of a conventional in-line type suspension in which a gimbal portion and a slider are bonded to each other, showing deformation of the slider.

FIG. 12 is a rear view of a gimbal portion and a slider of another conventional in-line type suspension in a bonded state.

FIG. 13 is a view of a bonding state of a gimbal portion and a slider of another conventional in-line type suspension viewed from a gimbal tip.

FIG. 14 is a rear view of the actual slider.

FIG. 15 is a side view of an actual slider.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Slider 2 ... Adhesion surface 2 '... Adhesion part 3 ... Outrigger 4 ... Flat part 5 ... Adhesion layer 6 ... Projection 7 ... Electromagnetic conversion element 8 ...・ Protrusion

Claims (3)

(57) [Scope of request for utility model registration] 1. A load on one end of a load arm having a free end and a load surface on one end of a load arm having a cantilevered structure and one end of the load arm for bonding a slider having an electromagnetic transducer. Two outriggers that are in contact with projections serving as fulcrums for transmitting force and extend substantially in parallel with the longitudinal axis of the load arm for supporting the adhesive surface, and are connected to the two outriggers and fixed to the load arm. It has a gimbal consisting of a flat part,
In a suspension for a floating type magnetic head device having a spacer at a base of the load arm for fixing to a head arm, the bonding surface is larger than a width in a short direction of the slider, and a depth is set in a longitudinal direction of the slider. The slider has a U-shaped opening having a length of 1/4 or more, and the size of the bonding portion of the gimbal to the back surface of the slider is less than or equal to 1/2 of the longitudinal length of the slider. A suspension for a floating magnetic head device, wherein the suspension has a length substantially equal to the length in the hand direction. 2. The suspension according to claim 1, wherein the two outriggers are removed, and the flat portion is disposed at the tip of the gimbal and connected to the U-shaped opening. . 3. The floating type according to claim 1, wherein a convex portion extending in the longitudinal direction of the slider is provided near the center of the bonding surface having the U-shaped opening. Suspension for magnetic head device.