JPH04149813A - Magnetic head - Google Patents

Abstract

PURPOSE:To reproduce high reliable recording information by making nearly identical the leading shapes of all tubes held by holders located from the nearest holder to the farthest holder from sliders. CONSTITUTION:This magnetic head consists of slider 1 having an electromagnetic conversion part 1a, suspension 2, conductive wire 3, tube 4, and arm 5. Each suspension 2 holds one slider 1, and the leading shapes of the tubes 4 held between the nearest holder and the farthest holder from the slider 1 are all made nearly identical. Also, the leading direction of the tube 4 is unified, and when an atmospheric temperature rises, the slider 1 is moved in the direction of an arrow. The magnetic head is repositioned on a magnetic disk medium so as to cancel this movement. Then, two sliders 1 are returned to a track where the information is recorded, and the recording information is reproduced with the high reliability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head mounted on a magnetic disk device, and particularly to a magnetic head provided with a plurality of sliders.

[Prior Art] Conventionally, as shown in FIG. 3, this type of magnetic head has a plurality of sliders 1 that grow an electromagnetic transducer section 1a for recording and reproducing information, and a slider 1 held at one end. a suspension 2; an arm 5 that holds the suspension 2;
Control unit for recording and reproducing information from slider 1 (not shown)
A cylindrical tube 5 is provided which covers a part of the conductive wire 3 and is held in the suspension stand 2.

As shown in FIG. 4, the suspension 2 has a first holding part 2a, a second holding part 2b, and a third holding part 2c, and holds the tube 5. The direction in which the tube 5 is drawn is the third
As shown in the figure, there are cases where the left and right sides are symmetrical. The tube 5 is generally made of polyethylene or Teflon polymer resin.

As shown in FIG. 5, the magnetic head 7, which swings around the arm rotation center θ, is positioned at a predetermined position with respect to the magnetic disk medium 8, and records information.

Perform playback.

When the ambient temperature of the magnetic head 7 rises during reproduction of recorded information, the tube 5 expands and stretches, and the slider 1 moves in the direction of the arrow in the figure, causing a positional deviation from the track 9.

[Problems to be Solved by the Invention] In the above-described conventional magnetic head, the tube material is resin, so when the ambient temperature of the magnetic head increases during reproduction of recorded information, the tube stretches and the slider moves.

As shown in Figure 5, when the two tubes are drawn in different directions, one slider moves toward the inner circumference of the disk and the other slider toward the outer circumference. Even if the magnetic head is repositioned so that it is on track, the other slider will further deviate from the track, resulting in a weak reproduction signal and the disadvantage that it cannot be reproduced correctly.

[Means for Solving the Problems] The present invention provides a plurality of sliders having electromagnetic transducer sections for recording and reproducing information, a suspension that holds one of the sliders at one end, and a suspension that holds the suspension suspension. a conductive wire that connects the slider to a controller for recording and reproducing information; and a cylindrical tube that covers a part of the conductive wire and is held by a plurality of holding sections of the suspensillon. In the magnetic head, the tube held between the holding portion closest to the slider and the holding portion farthest from the slider is routed in a direction in the direction of the air bearing surface of the magnetic slider. This is characterized in that all the tubes have approximately the same shape when viewed from above.

[Example code] Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a plan view of one embodiment of the present invention. The magnetic head shown in FIG. 1 includes a slider 1 having an electromagnetic transducer section 1a.
It consists of a suspension wire 2, a conductive wire 3, a tube 4, and an arm 5, and its configuration and arrangement are the same as the conventional example except for the direction in which the tube 4 is routed. The two tubes 4 are routed in one direction, as shown in the figure.
When the ambient temperature of the magnetic head increases, the two sliders 1 move in the direction of the arrow in the figure. Since the two sliders 1 move in the same direction, by repositioning the magnetic bed on the magnetic disk medium so as to cancel this movement, the two sliders 1 are moved onto the track where information is recorded. return.

FIG. 2 shows an embodiment in which the suspension 2 is attached to both the upper and lower sides of the arm, but the phenomenon is the same.

[Effects of the Invention] As explained above, in the present invention, when the ambient temperature changes, each slider moves in one direction, so it is easy to reposition the slider on the original track and reproduce recorded information. This has the effect of providing a magnetic head that is highly reliable against temperature changes.

[Brief explanation of drawings]

Fig. 1 is a plan view of one embodiment of the present invention, Fig. 2 is a perspective view showing another embodiment of the invention, Fig. 3 is a plan view of a conventional example, and Fig. 4 is part A of Fig. 3. FIG. 5 is a perspective view showing the details of the disc, and FIG. 5 is a plan view showing the relationship with a conventional disk. 1...Slider, 1a...Electromagnetic converter section, 1b...
・Flying surface of slider, 2...Suspension, 2a・
...First holding part, 2b...Second holding part, 2C...
- Third holding part, 3... conductive wire, 4... tube,
5...Arm.

Claims (1)

[Claims] 1. A plurality of sliders each having an electromagnetic transducer unit for recording and reproducing information, a suspension that holds one of the sliders at one end, an arm that holds the suspension, and a plurality of sliders that are connected to the slider. A magnetic head comprising a conductive wire connected to a control section for recording and reproducing information, and a cylindrical tube that covers a part of the conductive wire and is held by a plurality of holding sections of the suspension, wherein the holding section The shape of the tubes held between the holding part closest to the slider and the holding part farthest from the slider is approximately the same for all tubes when viewed from the direction of the air bearing surface of the magnetic slider. A magnetic head characterized by a shape. 2. The magnetic head according to claim 1, wherein the material of the tube is resin.