JPH04141816A - Magnetic head assembly - Google Patents

Abstract

PURPOSE:To prevent friction between a jimbal spring and a pivot and the occurrence of abnormal sound owing to the stick slip of a magnetic head by laying a flexible print circuit between the jimbal spring and the pivot. CONSTITUTION:The flexible print circuit 1 having a line transmitting the signal of the magnetic head 5 recording or reproducing information as against a recording medium extends to the lower part of the pivot 3. The pivot 3 giving processing force to the jimbal spring 4 touches the jimbal spring 4 through the flexible print circuit 1. Thus, the jimbal spring does not directly touch the pivot, and friction between them and the occurrence of abnormal sound owing to the stick slip of the magnetic head can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head assembly, and particularly to a magnetic head assembly used in a floppy disk drive.

[Conventional technology]

A conventional magnetic head assembly used in a floppy disk device, as shown in FIG. Either there is nothing between the gimbal spring 24 and the pivot 23 that presses the gimbal spring 24 and the pivot 23 is in direct contact with the gimbal spring 24, or as shown in FIG.
4 and the pot 33 with an elastic material 3 such as Teflon tape.
6 is interposed therebetween.

[Problem to be solved by the invention]

As mentioned above. Among conventional magnetic head assemblies, in the former case where the gimbal spring and pivot are in direct contact, when the magnetic head is in contact with the recording medium,
Friction between them and stick-slip of the magnetic head may generate abnormal noise, which leads to errors in writing or reading information, resulting in poor quality. On the other hand, in the latter case, where an elastic material such as Teflon tape is interposed between the gimbal spring and the pivot, the size of the elastic material is small (0,7
5m+m×O, about 75mm), therefore, it has the disadvantage that a large number of man-hours are required for cutting and pasting the elastic material.

[Means to solve the problem]

The magnetic head assembly of the present invention includes: a magnetic head for recording or reproducing information on a recording medium; a gimbal spring for supporting the magnetic head; a pivot for pressing the gimbal spring; The flexible printed circuit has a transmission line, and the flexible printed circuit is provided between the gimbal spring and the pivot.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

1(a) and 1(b) are a plan view and a front view showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line X--X of the embodiment of FIG. 1.

In FIGS. 1 and 27, reference numeral 2 denotes a flexible printed circuit having a line for transmitting signals from the magnetic head 5 that records or reproduces information on a recording medium. 4 is a gimbal spring that supports the magnetic helad 5. 3 is a pivot that applies a pressing force to the gimbal spring 4. 2 is a holder that holds the pivot 3. The flexible printed circuit 1 extends below the pivot 3, and the pivot 3 contacts the gimbal spring 4 via the flexible printed circuit 1. Therefore, the gimbal spring and the pivot do not come into direct contact with each other, and abnormal noises due to friction between them and stick-slip of the magnetic head are prevented. In addition, there is no need for man-hours for attaching an elastic material such as Teflon tape, and by appropriately selecting the material of the flexible printed circuit 1 and the material of the adhesive layer with the gimbal spring 4, it is possible to achieve the desired elastic material. It is possible to obtain the properties of

FIG. 3 is a sectional view showing another embodiment of the present invention.

In this embodiment, the magnetic head 15 is given a tension equal to the thickness of the flexible printed circuit 11. The structure and operation of the pivot 13 and gimbal spring 14 are the same as in the embodiment shown in FIG. In this case, by changing the thickness of the flexible printed circuit 11, it is possible to control the magnitude of glide tension applied to the magnetic head 15.

C Effects of the Invention] As explained above, the magnetic head assembly of the present invention has a flexible printed circuit interposed between the gimbal spring and the pivot, thereby reducing friction between the gimbal spring and the binding pot and the magnetic head. This has the effect of being able to prevent abnormal noise from occurring due to stick-slip. Furthermore, since there is no need for man-hours for pasting an elastic material such as Teflon tape, there is also the effect that the number of work-hours can be reduced.

[Brief explanation of the drawing]

1(a) and (b) are a plan view and a front view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line X-X of the embodiment of FIG. 1, and FIG. 3 is a cross-sectional view of the embodiment of the present invention. 4 and 5 are cross-sectional views showing two examples of conventional magnetic head assemblies. l・11...Flexible printed circuit, 21. ...1, holder, 3, 13, 23, 33...
...Pivot, 4.14-24.34...
Gimbal spring, 5, 15, 25...magnetic head, 36...-elastic material.

Claims (1)

[Scope of Claims] 1. A magnetic head that records or reproduces information on a recording medium, a gimbal spring that supports the magnetic head, and a pivot that presses the gimbal spring;
A magnetic head assembly comprising: a flexible printed circuit having a line for transmitting signals of the magnetic head, the flexible printed circuit being provided between the gimbal spring and the pivot. 2. The magnetic head assembly according to claim 1, wherein pretension is applied to the magnetic head by a flexible printed circuit.