JPH01303681A - Magnetic head supporting mechanism - Google Patents

Abstract

PURPOSE:To raise rigidity to a cross direction and to attain a high speed seeking action by providing a rising part extending to a head slider part at the both sides of a pressure spring part and forming the outer side face of the respective rising parts in a concave shape generally along the center line of the pressure spring part. CONSTITUTION:A flexible body 52, to which a head slider 51 is mounted, and a long and slender plate shaped pressure spring 1, which supports the flexible body 52 with one edge part and apply a fixed load to the head slider 52, are provided, and load beams 2 and 3 which are rising parts extending to the head slider 51 part are provided at the both sides of the pressure spring part 1. Then, the outer side face of the load beams 2 and 3 which are the respective rising parts are formed in a concave shape generally along the center line of the pressure spring part 1. Thus, the rigidity of a parallel direction to the face of a disk can be raised and high speed seeking is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a head support mechanism, and particularly to a head support mechanism for a magnetic disk.

[Conventional technology]

The head slider is disposed on a rotating rigid or flexible disk medium and is configured to read and write predetermined information. This head slider needs to be positioned quickly and accurately on a predetermined track on the disk medium while following irregularities on the surface of the disk medium. Therefore, the support mechanism of such a hent slider includes:
The head slider is required to press the disk medium with an appropriate load, have flexibility that can follow the movement of the disk medium surface, and have high rigidity in a direction parallel to the disk medium surface.

By the way, as a method for positioning the head slider on a predetermined track, there is a rotary seek method in which the head slider is moved in an arc. In particular, an in-line rotary seek method in which the longitudinal direction of the magnetic head support mechanism is arranged to match the longitudinal direction of the head slider is effective in reducing the size of the device and has been widely used.

A conventional example is shown in FIGS. 4 and 5. The conventional example shown in FIGS. 4 and 5 includes a flexible body 52 on which a head slider 51 is mounted, and an elongated plate that supports the flexible body 52 at one end and applies a predetermined load to the head slider 51. A pressure spring 52 is provided. On both sides of the pressure spring 53 are rising portions 54 that reach the head slider 51 portion.
55 are provided. A mount 56 is provided at the other end of the plate-shaped pressure spring 53, and is attached to a head arm (not shown) via this mount 56.

Load beams 54 and 55, which are rising parts, are provided on both sides of the plate-shaped pressure spring 53, thereby reducing the overall weight and providing rigidity in the direction perpendicular to the disk medium surface (undulation direction). It looks like this.

[Problem to be solved by the invention]

However, in such a conventional example, since the load beams 54 and 55, which are the rising parts, are formed in a straight line, there is a disadvantage that the rigidity in the direction parallel to the disk is weaker than the rigidity in the undulating direction mentioned above. was occurring.

For this reason, when used in the above-mentioned inline type rotary seek method, there was a problem in that a high-speed seek operation could not be realized due to insufficient lateral rigidity.

[Purpose of the invention]

An object of the present invention is to improve the disadvantages of the conventional example, and in particular, it is an object of the present invention to improve the rigidity in the lateral direction while maintaining the overall weight reduction of the device, thereby making it possible to perform a high-speed seek operation with a magnetic head support mechanism. Our goal is to provide the following.

[Means to solve the problem]

The present invention includes a flexible body on which a head slider is mounted, and an elongated plate-shaped pressure spring portion that supports the flexible body at one end and applies a predetermined load to the head slider. On both sides of the pressure spring portion, rising portions are provided that reach the head slider portion. The outer surface of each rising portion is formed into a concave shape as a whole along the center line of the pressure spring portion. This aims to achieve the above-mentioned purpose.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 3. Here, the same reference numerals are used for the same constituent members as in the conventional example described above.

The embodiment shown in FIGS. 1 and 2 includes a flexible body 52 on which a head slider 51 is mounted, and an elongated plate-like member that supports the flexible body 52 at one end and applies a predetermined load to the head slider 51. Load beams 2.3 are provided on both sides of the pressure spring portion 1, which are rising portions that reach the head slider 51 portion.

The outer surface of each rising portion of the load beam 2.3 is formed into a concave shape along the center line of the pressure spring portion 1 as a whole.

The flexible body 52 includes two outer fingers 51A and 51B parallel to the longitudinal direction of the load beam 2.3, and a center finger located between these fingers and having one end free as the center finger to which the head slider 51 described above is attached. 51C.

Further, the load beam 2.3 is fixed to both sides of the plate-shaped pressure spring portion 1 by, for example, welding.

The other configurations are the same as the conventional example described above.

FIG. 3 shows an example of use of the above embodiment. The usage example shown in FIG. 3 shows a case where the magnetic head mechanism of the above embodiment is implemented in a magnetic disk device having an in-line type rotary seek mechanism.

In this in-line type rotary seek mechanism, the head arm 61, the magnetic head support mechanism 63, and the hent slider 51 are arranged substantially linearly from the center of the rotation axis 62 of the actuator. When the hent slider 51 seeks a trunk on the disk medium 50, the head slider 51 moves in an arc centered on the rotation axis 62 of the actuator. Therefore, a force is applied to the magnetic head support mechanism 63 in the theta direction (that is, in the lateral direction). This lateral force can generally induce mechanical vibrations in the magnetic head support system. On the other hand, in the above embodiment, the magnetic head support mechanism does not support the load beam 2 as described above.
．． The side portion of No. 3 is bent so as to form a concave surface as a whole. The load beam 2.3 thus retains the above-mentioned lateral forces in an arcuate manner on its sides. Therefore, the rigidity in the lateral direction is greatly increased compared to a conventional load beam having a straight edge. Further, in the magnetic head support mechanism of the present invention, as described above, the concave bending of the load beam 2.3 results in work hardening of the entire structure, which helps improve the rigidity. in this way,
The magnetic head support mechanism of the above embodiment is suitable as a mechanism that can realize high-speed seek in an in-line type rotary seek system.

〔Effect of the invention〕

As described above, according to the present invention, load beams are provided as rising portions reaching the head slider portion on both sides of the plate-shaped pressure spring portion that supports the head slider and applies a constant load. Since the outer surface of this load beam is formed into a concave shape along the center line of the pressure spring section, the rigidity in the direction parallel to the disk surface can be significantly increased, thereby realizing high-speed seek. It is possible to provide an unprecedented and excellent head support mechanism that can perform the following functions.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing one embodiment of the present invention, and Fig. 2 is a plan view showing an embodiment of the present invention.
Figure 3 is a front view, Figure 3 is an explanatory diagram showing the usage state of Figure 1,
FIG. 4 is a plan view showing a conventional example, and FIG. 5 is a front view of FIG. 4. DESCRIPTION OF SYMBOLS 1...Plate-shaped pressure spring part, 2.3...Load beam as a vertical double part, 51...Head slider, 52...
...Flexible body. Patent applicant Nippon Electric Co., Ltd. Agent Patent attorney Isamu Takahashi Figure 1 52 (lko 4 to) 2 (C
I-Fj”-A) f(jmLll-G, also p)
(Head slider)'\ 3 (Load beam)\ 5 MeB (Hatakai! 1 finger Fig. 2/f Fig. 3

Claims (1)

[Claims] (1), comprising a flexible body on which a head slider is mounted, and an elongated plate-shaped pressure spring portion that supports the flexible body at one end and applies a predetermined load to the head slider;
In a magnetic head support mechanism comprising rising portions extending to the head slider portion on both sides of the pressure spring portion, the outer surface of each of the rising portions is formed along the center line of the pressure spring portion as a whole. A magnetic head support mechanism characterized by being formed in a concave shape.