JPH03209614A - Magnetic head - Google Patents

Abstract

PURPOSE:To make it possible to extract effective characteristics without sharply reducing the output of a magnetic head even on the inner-most position of a disk by forming a flexor like a V shape. CONSTITUTION:A core slider 2 obtained by fuzing cores consisting of an oxide magnetic substance or the like with joining glass through a fine gap to be a recording/reproducing gap 1 is stuck to the flexor 4 with epoxy resin or the like. A supporting spring 3 for applying load to the flexor 4 and the core slider 2 to balance dynamic lift generated by the rotation of a magnetic disk and a fixing amount part 6 are welded by a laser. The flexor 4 is molded like a V shape to form a tonge 7 for sticking the slider 2 and an outrigger 8 for applying the degree of freedom to the slider 2, and when the slider 2 is stuck to the tonge 7 with resin or the like in parallel, the center line 10 of the slider 2 is inclined from the center line 9 of the spring 3 by an angle theta. When the angle theta is set up so that the gap 1 and the tangent of the innermost track 12 of the disk 11 make a right angle when a magnetic head is on the track 12, the drop of an output can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic head for a magnetic disk device used for recording and reproducing data in computers and the like.

2. Description of the Related Art Floating magnetic heads used in fixed disks for recording data in computers, which have recently made rapid progress, are made by joining two cores made of oxide magnetic material or the like with a minute gap that serves as a magnetic gap. A core slider is used in which a flying surface is formed by machining or the like to obtain the lift force generated by the air flow generated by the rotation of the magnetic disk after being fused with glass.

A conventional magnetic head will be explained below.

FIG. 4 is a plan view of a conventional magnetic head, and FIG. 6 is a plan view of a conventional magnetic disk device.

As shown in these figures, a support spring 3 is adhesively fixed to a core slider 2 having a recording/reproducing gap 1 using epoxy resin or the like. The support spring 3 has a support part (flexure) 13 which has a part (tongue) to which the core slider 2 is attached and a part (outrigger) which gives the core slider 2 a degree of freedom. A column (load beam) that provides a load that balances the lift force exerted on the air bearing surface by the airflow generated by the rotation of the magnetic disk 11.
6 and a mounting section 6 for mounting on an arm (carriage arm) that moves to a predetermined recording track position. In this case, as shown in FIG.
The center line of coincides with the center line 9 of the support spring 3.

The conventional magnetic disk drive shown in Fig. 6 has two methods for moving to a predetermined recording track position: a linear seek method that moves linearly in the radial direction; There are two types: the Nuwinkuarmunta method, which involves drawing and moving. Both methods have their own advantages and disadvantages, but recently the swing-am-theta method has been increasingly used in order to shorten access time.

Problems to be Solved by the Invention However, with the above conventional configuration,
As can be seen from the figure, when the recording/reproducing gap 1 is located at the second position of the recording track 12 on the innermost circumference of the magnetic disk 11, the relative speed with respect to the magnetic disk 11 becomes the slowest and the output of the magnetic head decreases. However, since the recording/reproducing gap 1 is not perpendicular to the tangent to the recording track 12, there is a problem in that the output is further reduced.

The present invention solves the above-mentioned conventional problems, and the magnetic head is connected to the innermost recording track 12 of the magnetic disk 11.
The object of the present invention is to provide a magnetic head whose output does not decrease significantly even when the head is positioned above the magnetic head.

Means for Solving the Problem In order to achieve this object, the magnetic head of the present invention has the flexure of the support spring in a dogleg shape, and when the core slider is bonded parallel to the bonded portion (tonk) of the flexure, The angle between the center line of the flexure and the center line of the support spring is set so that the recording/reproducing gear knob is perpendicular to the tangent to the recording track on the innermost recording track of the magnetic disk.

Effect: With this configuration, when the magnetic head is located on the recording trunk at the innermost circumference of the disk, the recording/reproducing gap becomes perpendicular to the tangent to the recording track. The output of the magnetic head does not decrease too much even when the magnetic head is in use, and good characteristics can be obtained.

EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of a magnetic head according to an embodiment of the present invention, FIG. 2 is a detailed view of the flexure, and FIG. 3 is a plan view of a magnetic disk drive using the magnetic head. In FIG. 1, a core slider 2 is formed by fusing a core made of an oxide magnetic material or the like with bonding glass with a minute gap serving as a recording/reproducing gap 1, and a flexure 4 is made of epoxy resin or the like.
It is glued to. The flexure 4, a support spring 3 including a load beam 6 that applies a load to the core slider 2 to balance the lift generated by the rotation of the magnetic disk, and a fixing mount 6 are laser welded. FIG. 2 shows a detailed diagram of the flexure 4. The flexure 4 has a dogleg shape, and is provided with a tongue 7 to which the core slider 2 is bonded, and an outrigger 8 which gives the core slider 2 a degree of freedom. Core slider 2 parallel to tonk 7
When bonded with resin etc., the support spring 3 is formed as shown in Fig. 1.
An angle θ between the center line 9 of the core slider 2 and the center line 10 of the core slider 2
It will be tilted with . As shown in FIG. 3, when the magnetic head is positioned above the innermost recording track 12 of the magnetic disk 11, the recording/reproducing gap 1 provided in the core slider 2 is tangential to the innermost recording trunk 12. By setting the angle θ to be perpendicular to the angle θ, a decrease in output can be prevented. Note that this angle takes a value between approximately 1° and 600 degrees, taking into consideration the size of the magnetic disk device and the amount by which the core slider 2 is lifted from the magnetic disk 11.

Effects of the Invention As described above, in the magnetic head of the present invention, even when the magnetic head is positioned on the recording trunk at the innermost circumference of the magnetic disk, the recording/reproducing gap provided in the core slider is not connected to the tangent line of the recording track. Since the flexure is dogleg-shaped so that it is at a right angle, the output of the magnetic head does not decrease too much even when it is located at the innermost circumference where the relative speed with the magnetic disk is the slowest, and good characteristics are maintained. It can be pulled out.

[Brief explanation of drawings]

Fig. 1 is a plan view of a magnetic head according to an embodiment of the present invention, Fig. 2 is a detailed view of the flexure, Fig. 3 is a plan view of a magnetic disk device using the magnetic head, and Fig. 4 is a plan view of a conventional magnetic head. A plan view of the magnetic head, and FIG. 5 is a plan view of a conventional magnetic disk device. 1...Record/reproduction gap, 2...Core swriter, 3...Support spring, 4...Flexure.

Claims (2)

[Claims] (1) It has a floating core slider, and has a support spring consisting of at least a flexure that gives the core slider a degree of freedom and a load beam that gives a head load to the core slider,
The magnetic head in which the flexure has a dogleg shape. (2) The angle formed by the part of the flexure where the core slider is glued and the load beam is such that the recording/reproducing gap provided in the core slider at the innermost circumference of the magnetic disk is relative to the tangential direction of the recording track at the innermost circumference of the magnetic disk. 2. The magnetic head according to claim 1, wherein the magnetic head is at a right angle.