JPS62162288A - Magnetic head supporting device - Google Patents

Abstract

PURPOSE:To obtain a magnetic head supporting device improving contact efficiency between a magnetic disk surface and a magnetic head by arranging an oscillation attenuating material between a fixed holding material opposed to a gimbal surface and symmetrical about a gimbal moving part and the gibmal moving surface. CONSTITUTION:The magnetic head is fixed on the gimbal 3 having a rocking shaft in one direction. An arm part 4 extended slightly up to the inside from an oscillation shaft 2 and making its center axis almost coincide with the oscillation shaft 2 is formed and the oscillation attenuating material 6 is fitted to a holding plate 5 having a shape almost equal to the gimbal shape on the outside of the oscillation shaft 2 at the surface opposed to the gimbal surface. The arm part 4 of the holding plate 5 is positioned so that the center axis of the arm part 4 almost coincides with the oscillation shaft 2 of the gimbal 3 and the arm part 4 is positioned almost symmetrically about the center of the oscillation shaft 2 to fit the holding plate 5 to the gimbal 3. These members are set up on a prescribed position of the carriage 7, temporarily fixed by an instantaneous bonding agent or the like and then the gimbal 3 is fixed on a carriage 7 and the holding plate 5 fixed on the gimbal 3 or the carriage 7 by a bonding agent 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head support device for a floppy disk drive or the like, and particularly to an improvement for improving the contact between a magnetic disk surface and a magnetic head.

[Conventional technology]

A conventional gimbal incorporating a vibration damping mechanism is disclosed in Japanese Patent Application Laid-Open No. 59-151362.

[Problem that the invention seeks to solve]

However, in JP-A-59-151362, no consideration is given to the method of attaching the vibration damping material, nor to changes in the posture of the head due to contraction and expansion of the vibration damping material due to changes in temperature and humidity.

It is an object of the present invention to provide a method for attaching a vibration damping material and a magnetic head support device that has less displacement of the head posture due to environmental changes and has good contact between the magnetic disk surface and the magnetic head. There is a particular thing.

[Means for solving problems]

The above object is achieved by providing a vibration damping material between the movable surface of the gimbal and a fixed holding member that faces the gimbal surface and is symmetrical with respect to the gimbal movable part.

[Effect]

The vibration damping material is located between the fixed holding material and the movable surface of the gimbal, so the displacement of the gimbal is reliably transmitted to the imaging damping material, and the shape of the holding material is symmetrical with respect to the movable part of the gimbal, making it easy to install. There is little change in head posture or positional deviation due to environmental changes.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

The magnetic head 1 is fixed to a gimbal 3 having a swing axis 2 in one direction. It also has an arm portion 4 that extends somewhat inward from the swing shaft 2 and whose center axis almost coincides with the swing shaft 2, and a retaining plate 5 that is approximately in the shape of a gimbal on the outside of the swing shaft 2.
is equipped with vibration damping material (e.g.
Pressure-sensitive double-sided adhesive tape, foam rubber, foam plastic, etc.) 6.

It is attached in the same shape as the retaining plate 5. The central axis of the arm portion 4 is
The arm part 4 of the holding plate 5 is positioned so as to substantially coincide with the swing axis 2 of the gimbal 3 and to be substantially symmetrical about the center between the swing axes 2, and is attached to the gimbal 3. Carriage 7
After temporary fixing with an instant adhesive or the like, the gimbal 3 is fixed to the carriage 7 and the holding plate 5 is fixed to the gimbal 3 or the carriage 7 with an adhesive (e.g. epoxy). Further, when a pressure-sensitive double-sided adhesive tape is used as the vibration damping material 6, it goes without saying that it is not necessary to fix it to the gimbal 3 using the adhesive 8.

Depending on the work method, the holding plate 5 and the vibration damping material 6 may be attached to the gimbal 3 after the gimbal 3 is temporarily fixed to the carriage 7, or the vibration damping material 6 may be attached to the gimbal 3 first. It is also conceivable to sandwich the vibration damping material 6 between the gimbal 3 and the holding plate 5.

FIG. 4 shows another embodiment in which the holding plate 5 of the previous embodiment (FIGS. 1 to 3) is replaced with only the arm portion 6.

An example in which a pressure-sensitive double-sided adhesive tape is used as the vibration damping material 6 is shown.

In this case, a vibration damping material is attached to the holding plate 5, and the central axis of the holding plate 5 and the swing axis 2 of the gimbal 3 are approximately aligned.
A holding plate 5 is attached to the gimbal 3 across the swing axis 2 and symmetrically about the center between the two swing axes.

With the above configuration, even if the gimbal 3 becomes vibrating due to the interaction between the magnetic disk and the magnetic helad, the gimbal 3
The arm part 4 of the holding plate 5 and the gimbal 3 whose displacement is fixed
The vibration is reliably transmitted to the vibration damping material 6 between the two, thereby attenuating the vibration, and maintaining good contact between the magnetic disk surface and the magnetic head.

Furthermore, since the holding plate 5 and the vibration damping material 6 are positioned almost symmetrically with respect to the movable part of the gimbal 3, that is, approximately symmetrically with respect to the swing shaft 2 and the center between the swing shafts 2, ,
The holding plate 5 and the vibration damping material 6 are attached to the gimbal 3 at the following times:
Furthermore, the mounting can reduce changes in head posture and positional displacement due to expansion and contraction of the holding plate 5 and vibration damping material 6 due to subsequent changes in temperature and humidity.

〔Effect of the invention〕

According to the present invention, it is possible to obtain a magnetic head support device in which the contact between the magnetic disk surface and the magnetic head is good, and the attitude of the head does not change much due to changes in the vibration damping material or changes in the environment.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention, and Fig. 2 is a perspective view showing an embodiment of the present invention.
3 is an exploded perspective view showing the structure of one embodiment of the present invention, FIG. 4 is a perspective view showing another embodiment, and FIG. 5 shows the structure of FIG. 4. It is an exploded photographic view.

Claims (1)

[Claims] 1. In a magnetic head support device having a gimbal with degrees of freedom, a vibration damping material is provided between a holding material facing the gimbal surface and a movable surface of the gimbal, and the holding material is attached to a stationary part of the gimbal. A magnetic head support device, characterized in that it is fixed to. 2. The magnetic head support device according to claim 1, wherein a holding member is provided approximately symmetrically around the swing axis of the gimbal and the center between the axes.