JPH02239481A - Head support mechanism - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head support mechanism, and particularly to a magnetic head support mechanism used in a magnetic disk drive. [Prior Art] A magnetic head slider (hereinafter referred to as slider), which is incorporated into a magnetic disk drive and reads and writes information, uses a hydrodynamic air bearing system that levitates using air flow generated on the surface of a rotating magnetic disk. has been adopted. Magnetic disk drives are increasing in capacity and density year by year, and as a result, the flying height of the slider is also becoming smaller. In order for the slider to always follow the magnetic disk surface at a constant distance under such a small flying height, the slider and its support mechanism must prevent movement in the pitch direction, roll direction, and parallel direction. It is necessary that there be no. As a means for this purpose, a transducer support device described in Japanese Patent Publication No. 58-22827 is widely known. [Problems to be Solved by the Invention] A magnetic disk device usually has one or two magnetic heads floating per magnetic disk surface, and seeks to an arbitrary track to read and write information. This seek operation requires a large acceleration of several tens of G (for example, 60 G) in order to shorten the seek time.

This may cause abnormal vibrations in the head support mechanism, increasing fluctuations in the flying height of the slider, causing contact between the slider and the disk, resulting in a head crash or difficulty in positioning the head to a desired track. In order to prevent these, it is necessary to increase the rigidity and damping sufficiently to prevent abnormal vibrations from occurring in the head support machine ellipse. Tokuko Sho 58-2282
The head support mechanism known from Publication No. 7 has a "U-shaped" structure in which a load spring is provided with a leaf spring flange of a certain thickness to increase rigidity, but it is difficult to attenuate vibrations transmitted to the slider. teeth. No particular consideration was given. Therefore, if the load spring vibrates due to disturbance vibration from the heel positioner during seek operation, abnormal contact will occur between the gimbal protrusion and the load spring structure that contacts the protrusion, causing the gimbal that holds the slider to vibrate. The disadvantage is that the slider vibrates, resulting in abnormal vibration of the slider and disturbance of flying stability. An object of the present invention is to stably fly a head during a seek operation.

[Means to solve the problem]

In order to achieve the above object, the present invention reduces the vibration of the gimbal by attaching a low-friction material to at least one side of the surface of the protrusion of the gimbal that holds the slider and the surface of the load spring structure that contacts the protrusion. This is what I did.

[Effect]

Since a low-friction material is attached to at least one of the surface of the gimbal protrusion or the contact portion of the load spring structure with the gimbal protrusion, the coefficient of friction is smaller than that due to metal-to-metal contact. Therefore, when the load spring vibrates due to external vibration, the low-friction material generates appropriate sliding friction and damps the vibration transmitted to the gimbal at the contact part of the tip of the spring with the gimbal protrusion. Abnormal vibration of the slider is prevented, and the amount of vibration is reduced for stable floating. [Embodiment] Fig. 1 is an enlarged sectional view of a head support mechanism to which the present invention is applied, and Fig. 2 is an overall plan view of the head support mechanism.
In Fig. 1, the gimbal protrusion (pivot) 2α has a hemispherical shape provided on the gimbal 2, and makes point contact with the load spring 1 to apply the load from the load spring 1 to the slider 3 glued to the gimbal 2. Furthermore, it does not impede the movement of the slider 3 in the pitch and roll parallel directions. The low-friction material 4 is attached to the gimbal protrusion 2α of the gimbal 2 and the portion of the load spring 1 opposite thereto, including the contact portion of the gimbal protrusion 2α. In a magnetic disk drive, during a seek operation to move to a target track, disturbance vibrations are generated by the positioner and transmitted to the head support mechanism through various structures.
The load spring 1 vibrates, and the vibration is transmitted to the gimbal due to metal-to-metal contact with the gimbal protrusion 2α.
In the case of FIG. 1 according to the present invention, even if the load spring 1 vibrates, the friction coefficient between the load spring 1 and the gimbal protrusion 2CL is extremely small due to the low friction material compared to the conventional friction coefficient between metals. , a bulge occurs between the load spring l and the gimbal protrusion 2CL, damping vibrations and making it difficult for external vibrations of the positioner to be transmitted to the gimbal 2. Therefore, the flying stability of the slider 3 is not disturbed and head crashes are prevented.

Note that the same effect can be obtained even if the low-friction material 4 is attached only to either the load spring 1 or the gimbal protrusion 2 (L). Fluorine-based lubricants are also excellent as this low-friction material. However, the lubricant may be an inorganic substance such as SL02.The lubricant may be in either liquid or solid form.

[Brief explanation of drawings]

Fig. 1 is an enlarged sectional view of a head support mechanism according to an embodiment of the present invention, and Fig. 2 is a plan view of a heel support mechanism according to an embodiment. 1...Load spring, 2...Gimbal. 2α・
...Gimbal protrusion, 3...Slider, 4...Low friction material.

Claims (1)

[Claims] 1. A load spring structure that applies a load to a floating head slider that carries a magnetic transducer;
The head support mechanism includes a gimbal having one end connected to the load spring structure, holding the head slider, and having a protrusion for applying a load applied by the load spring structure to the head slider. A head support mechanism characterized in that a low-friction material is attached to at least one side of a surface of a gimbal protrusion or a surface of a load spring structure that contacts the protrusion.