JPH01179287A - Head supporting device for hard disk - Google Patents

Abstract

PURPOSE:To improve the traceability of a slider for a disk by providing a gimbal having a narrow part on each of four branches, and fixing tip parts of a pair of branches not being neighbored and remaining pair of branches on the slider and a flexure. CONSTITUTION:The gimbal 7 is adhered on the flexure 12 at the tip part of the branch in which the narrow parts 8 and 14 are provided, and adhered on the slider 15 at the tip part of the branch in which the draw-down parts 9 and 11 are provided via spacers 13 and 10. Since the gimbal 7 receives a force in a direction to be expanded when a load is applied in a direction perpendicular to the recording plane of a disk 17, the gimbal 7 is prevented from being deformed remarkably. When pitching is generated in the slider 15, the gimbal 7 is twisted at the narrow parts 8 and 14. Also, when rolling is generated in the slider 15, the gimbal 7 is twisted at the narrow parts 9 and 11. Thus, the movement of the slider 15 in the direction perpendicular to the recording plane of the disk can be suppressed, and it can follow up the waviness of the disk 17 sufficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a head support device used in a hard disk drive device.

A conventional hard disk drive device generally uses a magnetic head having a floating slider.

In order to position the magnetic head on a desired track on the disk, a slider having a magnetic head is attached to the tip of a movable 7-lexia. The conventional hard disk head support device as described above will be explained with reference to FIGS. 4 and 265. FIG. 4 is a side view of the tip portion of the flexure and the slider. 1
is a flexure, and 2 is a spring attached to the lower surface of the slider 1. 3 is a slider glued to the mounting spring. FIG. 5 is a perspective view of the attachment spring 2. The mounting spring 2 is made of a thin metal plate, and is attached to the frame portion 4 by forming a U-shaped slit.
It has a shape having a tongue-like portion 5. Reference numeral 6 denotes a hemispherical protrusion, which is formed near the tip of the tongue-like portion 5. This protrusion 6 is in contact with the lower surface of the flexure 1.

A conventional hard disk head support device has the structure described above, and its operation will be explained below. A hard disk drive is generally equipped with multiple magnetic disks, and the magnetic disks are mounted on a rotating shaft with the highest precision possible (although they are installed, there may be some inclination to the rotating shaft, and in such cases, the rotation may be delayed). When the slider 3 is placed opposite such a magnetic disk, the slider performs rolling and pitching motion around the protrusion 6 to follow the displacement of the magnetic recording surface of the magnetic disk.

Problems to be Solved by the Invention In the hard disk head support device as described above, when the slider performs rolling motion or pitching motion, the protrusion 6 rolls while contacting the lower surface of the flexure 1. Therefore, the contact point between the protrusion 6 and the flexure 1 moves along with the above-mentioned rolling motion and pitching motion. Then, as the contact point between the projection 6 and the flexure 1 moves, the attachment spring 2 is distorted. In this state, the attachment spring 2 generates a force that tries to return to the state of t), and when the frictional force between the protrusion 6 and the flexure 1 decreases due to some reason such as vibration, it suddenly returns to its original shape. Return to In this way, in the conventional device, the attachment spring 2 causes mechanical vibration, which may cause errors in recording or reproduction. Furthermore, the center of the rotational movement of the slider during rolling and pitching is ideally located at the center of buoyancy of the slider so as to minimize the rotational moment. Since the contact point of flexure 1 moves, the center of rotation of the slider is 0.2 from the center of buoyancy.
There is a problem in that the deviation may be as much as about mm, which increases the rotational moment and deteriorates the ability of the slider 3 to follow the disk.

The present invention has been made in view of the above problems.
It is an object of the present invention to provide a hard disk drive device in which a slider can easily follow the disk.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has a cymbal having four radially formed branches and a gimbal. In this technique, the tips of a pair of branches that are not adjacent to each other were fixed to the slider, and the tips of the remaining pair of branches of the gimbal were fixed to 7 Lexia.

Function: Due to the structure described above, the gimbal twists at the waist during rolling and pitching movements of the slider, and follows the undulations of the disk well, and the gimbal does not deform much even when force is applied in a direction perpendicular to the recording surface of the disk. Never.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings. In Fig. 1, 7 is a gimbel, which is made by cutting out 2 a thin metal plate. Moreover, the gin kurua has a shape in which four branches extend radially from the center, and each of the four branches is provided with constrictions 8 to 11. Furthermore, the gimbal 7 is bonded to the flexure 12 at the tip of the branch provided with the constriction 8.10, and to the slider 15 via a spacer 13.14 at the tip of the branch provided with the constriction 9.11. has been done. Furthermore, the flexure 12 is fixed to the arm 16.

The present invention has the above (1) configuration, and its operation will be explained below. When the magnetic disk 17 rotates, the slider 1
5, keep a small gap from the surface of the magnetic disk 17! 7. When the recording surface of the magnetic disk 17 undulates, it follows this undulation and moves in a direction perpendicular to the recording surface of the magnetic disk 17. When the slider 15 moves in a direction perpendicular to the disk surface, the portion of the flexure 12 attached to the arm 16 bends, and when the slider 15 pitches or rolls, the waists 8 to 11 of the gimbal 7 twist.

Next, the function of the gimbal will be explained in more detail using FIG. When a load is applied in a direction perpendicular to the recording surface of the disk 17, the cymbal 7 receives a force in the direction of extension, so the cymbal 7 does not deform significantly. When the slider 15 pitches, the cymbal 7 is twisted at the constrictions 8 and 10. Further, when the slider 15 rolls, the gimbal 7 twists at the waist portions 9 and 11. In this way, the slider 15 can sufficiently follow the undulations of the disk 17 without moving much in the direction perpendicular to the recording edge surface of the disk.

Furthermore, since the cymbal section can be configured to be extremely small, the gimbal will not resonate due to the airflow generated by the rotation of the disk.

Next, a second embodiment will be described using FIG. 3. In this embodiment, a groove 18 is formed on the top surface of the slider 15,
The gimbal 7 is attached directly to the upper surface of the slider 15 without using the spacer described above.

Effects of the Invention As described above, the hard disk head support device of the present invention is provided with a cymbal having four radially formed branches and each branch having a constriction, and the cymbal has four branches formed in a radial manner. The tips of the pair of branches that are not adjacent to the gimbal are fixed to the slider, and the tips of the remaining pair of branches of the gimbal are fixed to the flexure, so the slider does not move much in the direction perpendicular to the recording surface of the disk and can easily adjust to the undulations of the disk. The cymbal section can be configured to be extremely small, so the cymbal will not resonate due to the airflow generated by the rotation of the disk.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment 1 of a hard disk head support device of the present invention, and FIG. 2 is a main part of the same. J.J.
3 is a perspective view of a main part of a second embodiment of the hard disk head support device of the present invention, FIG. 4 is a side view of a conventional hard disk head support device, and FIG. 5 is a perspective view of the same main part. be. 7... Cymbals 8-11... (Fins) 2... Flexures 13.14... Spacers 15... Sliders 16...
Arm agent's name: Patent attorney Toshio Nakao

Claims (1)

[Claims] A slider having a magnetic head, a gimbal having four radially formed branches and each branch having a constriction, and a flexure for holding the slider via the gimbal; A head support device for a hard disk, characterized in that the tips of a pair of techniques that are not adjacent to each other are fixed to the slider, and the tips of the remaining pair of branches of the gimbal are fixed to the flexure.