JPH03237669A - Magnetic head supporting body, magnetic head assembly using the body and magnetic disk device - Google Patents

Abstract

PURPOSE:To stabilize the track positioning precision of a magnetic head assembly by using a magnetic head supporting body being a flat elastic body where the variation of mechanical resonance is less and an arm having a stepped part. CONSTITUTION:The magnetic head assembly 10 consists of the magnetic head supporting body 1, the arm 5, a supporting board 7, a gimbal spring 8 and an electromagnetic conversion element 9. Then, the electromagnetic conversion element 9 is held at one end of the magnetic head supporting body 1 through the gimbal spring 8 and the other end is sandwiched and fixed by the arm 5 with the supporting board 7. The protruding stepped part 6 is provided for the arm 5 and an elastic deformed part 4 is deformed by the engagement of the stepped part 6 and the magnetic head supporting part 1, whereby a flat part 3 is displaced. Thus, desired positioning precision is obtained at the time of mouting the assembly on the magnetic disk device and a track positioning error is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head assembly used in a magnetic disk drive or the like, and more particularly to a magnetic head support that supports an electromagnetic transducer.

[Conventional technology]

Conventionally, this type of magnetic head support has held an electromagnetic transducer at one end, is fixed to a rigid arm at the other end, and has a bent portion in the middle. This is to apply a load to the electromagnetic transducer by largely displacing the end portion holding the electromagnetic transducer.

[Problem to be solved by the invention]

A magnetic head assembly using the above-mentioned magnetic head support is
It is necessary to perform track positioning of a magnetic disk medium installed in a magnetic disk device with an accuracy of ±0.5 μm or less, and therefore irregular mechanical resonance is not allowed in the magnetic head support.

Therefore, bending of the magnetic head support must be done dimensionally uniformly, but in conventional bending, there are variations in the dimensions of the jigs, deformation due to wear, and dust during the bending process. Due to insufficient management, satisfactory characteristics could not be obtained.

These causes change the resonance frequency, resonance mode, or sharpness of resonance of the magnetic head support, making it impossible to obtain the desired positioning accuracy when installed in a magnetic disk drive, resulting in track positioning errors. There is a very serious problem.

[Means to solve the problem]

The magnetic head support of the present invention includes a tip portion for fixing a gimbal spring, a rigid flat portion with flanges on both sides, and a flat portion that is coplanar with and continuous with the flat portion, and , an elastic plane part that deforms with the displacement of the flat part, and a support surface part that is formed on the same plane as the elastic plane part and is fixed to the rigid arm.

A magnetic head assembly using this includes the magnetic head support, an electromagnetic transducer for recording and reproducing information, and a gimbal spring that holds the electromagnetic transducer and is fixed to the tip. , a magnetic head arm having a mounting surface for fixing the elastic plane part, and a magnetic head arm having a protruding step part that protrudes from the plane including the mounting surface and engages and deforms the elastic plane part. . Furthermore, this magnetic head assembly is mounted on a magnetic disk device.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention. In FIG. 1, a magnetic head support 1 is made of stainless steel with a thickness of 50 μm, and flanges 2a and 2b are formed on both sides by bending, and the portions in contact with these flanges have a high bending rigidity. The flat portion 3 is high and difficult to deform. Further, a trapezoidal unprocessed portion following this flat portion 3 is an elastically deformable portion 4, and this portion deforms during use.

FIG. 2 is a perspective view of a magnetic head assembly using the magnetic head support of the present invention. In FIG. 2, a magnetic head assembly 10 includes a magnetic head support 1. Arm 5, support plate 7. Consisting of a gimbal spring 8 and an electromagnetic transducer 9, the electromagnetic transducer 9 is held at one end of the magnetic head support 1 via the gimbal spring 8, and the other end is held between the arm 5 together with the support plate 7 and fixed. has been done. Further, the arm 5 is provided with a protruding step portion 6, and when the step portion 6 and the magnetic head support 1 engage with each other, the elastic deformation portion 4 is deformed and the flat portion 3 is displaced. . Note that by changing the height of the stepped portion 6, the amount of displacement of the flat portion 3 changes.

FIG. 3 is a partial side view showing the magnetic head assembly of the present invention mounted on a magnetic disk device.

In FIG. 3, a magnetic head assembly 10 is held adjacent to a magnetic disk medium 11 by an arm 5 attached to a trunk positioning drive (not shown).

A viscous pressure generated by facing the magnetic disk medium 11 is applied to the electromagnetic transducer 9, and the magnetic head support 1
The tip of is displaced. At this time, the flat portion 3 having high bending rigidity is hardly deformed, and most of the deformation accompanying this displacement occurs in the trapezoidal elastic deformation portion 4.

〔Effect of the invention〕

As explained above, according to the present invention, manufacturing is easy;
Furthermore, by using the magnetic head support, which is a flat elastic body with little "variation" in mechanical resonance, and the arm having a stepped portion, the track positioning accuracy of the magnetic head assembly becomes extremely stable.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a perspective view of a magnetic head assembly using the magnetic head support of the present invention, and FIG. 3 is a perspective view of a magnetic head assembly using the magnetic head assembly of the present invention. FIG. DESCRIPTION OF SYMBOLS 1... Magnetic head support, 2a, 2b... Flange, 3... Flat part, 4... Elastic deformation part, 5... Arm, 6... Step part, 7... Support Plate, 8... Gimbal spring, 9... Electromagnetic conversion element, 10... Magnetic head assembly, 11... Magnetic disk medium.

Claims (1)

[Scope of Claims] 1. A tip portion for fixing a gimbal spring, a rigid flat portion with flanges on both sides, and a flat portion that is coplanar with and continuous with the flat portion; A magnetic head support comprising: an elastic plane portion that deforms as the flat portion is displaced; and a support surface portion that is flush with the elastic plane portion and is fixed to a rigid arm. 2. The magnetic head support according to claim 1, and information recording/recording.
an electromagnetic transducer that performs reproduction; a gimbal spring that holds the electromagnetic transducer and is fixed to the tip; a mounting surface that fixes the elastic plane part; . A magnetic head assembly comprising: a magnetic head arm having a protruding step portion that engages with and deforms the elastic flat portion. 3. A magnetic disk device equipped with the magnetic head assembly according to claim 2.