JP2716297B2 - Magnetic head assembly - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head assembly, and more particularly to a magnetic head assembly in a flexible disk drive or the like.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 5 and 6, a magnetic head assembly of this type includes a magnetic head 3 for recording / reproducing a recording medium and a movable leaf spring 4 for making the magnetic head 3 behave flexibly. And a flexible printed circuit 11 for transmitting an electric signal and a support 6. In order to suppress resonance of the movable leaf spring 4 and the support 6, a silicon material or the like is provided around the support fulcrum 6 a. The damping material 7 was applied.

[0003]

In the above-mentioned conventional magnetic head assembly, a contact between the magnetic head and the recording / reproducing medium causes a contact friction, whereby a movable leaf spring material which makes the magnetic head behave flexibly, and In some cases, the support may resonate in a certain frequency range. Further, in order to suppress this vibration, a vibration damping material such as a silicon material is applied around the support fulcrum. For this reason, a large number of man-hours and costs were required to suppress the above-mentioned phenomenon.

[0004]

SUMMARY OF THE INVENTION The present invention has a magnetic head for recording and reproducing data on and from a recording medium, a movable leaf spring member for making the magnetic head behave flexibly, and a flexible print circuit for transmitting electric signals. The magnetic head assembly comprises at least one control unit protruding from an end of the flexible print circuit and controlling operation and vibration of the movable leaf spring material.

[0005]

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

FIG. 1 is a plan view of a flexible print circuit according to a first embodiment of the present invention, FIG. 2 is a plan view of a flexible print circuit according to a second embodiment of the present invention, and FIG. 3 is a magnetic head according to the present embodiment. 4A shows a top view, FIG. 4B shows a side view, FIG. 4C shows a bottom view, and FIG. 4 shows a state of the magnetic head according to the present embodiment. ) Is a front view showing a pitch angle, and FIG. 2B is a side view showing a roll angle.

In this embodiment, the flexible print circuit 1 has two or more control sections 2 protruding at an end.
It is provided as follows . The size of the protrusion of the control unit 2 can be adjusted by the length L. The control unit 2 of the first embodiment shown in FIG.
Is to particularly suppress the movement and vibration in the pitch direction of the magnetic head and the movable leaf spring material. The control unit 2 can also control the operation and vibration of the magnetic head and the movable leaf spring material in the roll direction. In this case, the second unit shown in FIG.
This is the structure of the embodiment. Further, in any of the embodiments, it is all the more crucial that the control unit 2 is provided only on one side in the roll direction, that the control unit 2 is provided only in the pitch direction, or that the control unit 2 is constituted by a combination of the roll direction and the pitch direction. Further, it goes without saying that the control unit 2 may extend a resin such as a polyimide resin or polyester used as a base material of the flexible print circuit 1 or use another member such as a double-sided tape.

FIG. 3 shows a magnetic head assembly of this embodiment in which an assembly of a magnetic head 3, a movable leaf spring 4, and a flexible print circuit 1 is mounted on a support 6.

FIG. 1 shows a flexible printed circuit 1 used as the first embodiment of the present invention shown in FIG.
Is used. Flexible print server
The control unit 2 provided so as to protrude from the end of the kit 1 bridges the movable leaf spring groove 5 of the movable leaf spring 4, and can suppress the operation and vibration of the magnetic head 3 and the movable leaf spring 4. FIG. 4 shows the state of the magnetic head 3 and the movable leaf spring 4 attached to the support 6. By using a flexible printed circuit 1 having a protruding control unit 2 as shown in FIGS. 1 and 2,
The flatness of the magnetic head 3, that is, the deviation of the sliding surface of the magnetic head in the pitch angle direction and the roll angle direction (direction in which Θ ₁ and 大 き く₂ increase) can be suppressed, and a stable contact can be achieved when the medium slides. Obtainable. The pitch angle Θ ₁
And it is desirable that the roll angle theta ₂ is within 50 minutes ± To obtain a stable contact with the above.

[0010]

As described above, the present invention relates to a magnetic head for recording and reproducing data on and from a recording medium, a movable leaf spring material for causing the magnetic head to behave flexibly, and an assembly of a flexible print circuit. A control section is provided at the end of the movable leaf spring material. The control section controls the operation and vibration behavior of the movable leaf spring material, so that the resonance of the movable leaf spring material or the support caused by the contact between the magnetic head and the recording medium occurs. This has the effect of suppressing the phenomenon.

Further, by controlling the size of the control unit, the rigidity of the movable leaf spring material in the pitch angle and the roll angle direction can be freely varied. Further, since the resonance phenomenon of the movable leaf spring material or the support is suppressed, there is no need to apply a vibration damping material such as a silicon material around the support fulcrum, thereby reducing the number of steps.

[Brief description of the drawings]

FIG. 1 is a plan view of a flexible print circuit according to a first embodiment of the present invention.

FIG. 2 is a plan view of a flexible printed circuit according to a second embodiment of the present invention.

3A and 3B show a magnetic head assembly according to the present embodiment, wherein FIG. 3A is a plan view, FIG. 3B is a side view, and FIG. 3C is a bottom view.

4A and 4B show a state of the magnetic head according to the present embodiment, wherein FIG. 4A is a front view showing a pitch angle, and FIG. 4B is a side view showing a roll angle.

FIG. 5 is a plan view of a flexible print circuit used in a conventional magnetic head assembly.

6A and 6B show a conventional magnetic head assembly, wherein FIG. 6A is a plan view, FIG. 6B is a side view, and FIG. 6C is a bottom view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 11 Flexible print circuit 2 Control part 3 Magnetic head 4 Movable leaf spring 5 Movable leaf spring groove part 6 Support body 7 Damping material

Claims (1)

(57) [Claims] A magnetic head for recording and reproducing data on and from a recording medium;
In a magnetic head assembly including a movable leaf spring material for causing the magnetic head to behave flexibly and a flexible print circuit for transmitting an electric signal, the magnetic head assembly is protruded from an end of the flexible print circuit.
Vignetting magnetic head assembly, characterized in that it comprises at least one control unit for controlling the operation and vibration of the movable plate spring member.