JPH01227215A - Magnetic head - Google Patents

Abstract

PURPOSE:To eliminate the abrasion of a disk and information reading/writing errors due to the adhesion of dust by forming a dust removing groove on the sliding contact face in about the direction of the circumference of the disk which is brought into contact with this head and discharging the dust to the outside. CONSTITUTION:A groove 8 is formed on a sliding contact face 2 and is formed at a prescribed angle (alpha) to the direction in which an air venting groove 5 is formed, that is, a moving direction A in the direction of the radius of the disk among the moving directions of the disk which is brought into contact with a magnetic head 1. This groove 8 is formed in about the direction of the circumference of the disk and the forming position of the groove 8 is formed at about the same angle to the moving direction A of the disk. Thus, the dust accumulated by the relative operation of the head 1 and the disk is discharged to the outside through the grooves 8 and 9. By taking the forming position of the groove 8 upperstream than the arrangement face of a recording and reproducing core 3, the disk from which the dust is removed can be brought into contact with the core 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head, and more particularly to a magnetic head having an improved sliding surface in contact with a disk.

[Conventional technology]

FIG. 2 shows a conventional magnetic head used in a double-sided floppy disk drive.

The floppy disk contact sliding surface of the magnetic head 1 is formed by a groove 5 formed approximately in the center of the head, and a sliding surface (slider) 2, which is a first leg, and a sliding surface 4, which is a second leg. It is. Of these, the sliding surface 2 has a built-in core 3 for recording and reproduction. The entire second sliding surface 4 contacts the disk, thereby stabilizing the posture of the disk relative to the magnetic head body. Further, the groove 5 is formed for air escape, and thereby prevents the disk and head from adhering to each other and causing malfunction.

[Problem to be solved by the invention]

FIG. 3 shows the structure of a double-sided magnetic head in which two heads 1 and 7 are arranged one above the other to sandwich a disk. In this configuration, the head itself slides over the disk while the disk is held between the two heads. In this case, dust adheres to the core 3 of the magnetic head and other sliding surfaces between the disk and the head due to movement of the disk. This attached dust causes problems such as wear of the disk and errors when writing or reading information.

[Means to solve the problem]

The present invention has been constructed in view of the above-mentioned problems, and is a magnetic head in which a dust exhaust groove is formed on the sliding surface of the magnetic head at a predetermined angle with respect to the air relief groove of the magnetic head. be.

[Effect]

Dust that accumulates on the contact sliding surface due to the sliding contact between the magnetic head and the disk is released to the outside of the magnetic head through a groove formed on the sliding contact surface of the magnetic head at a predetermined angle to the air release groove of the magnetic head. It is discharged.

〔Example〕

An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, the illustrated magnetic head has a floppy disk contact sliding surface of the magnetic head 1, similar to the conventional configuration.
A groove 5 formed approximately in the center of the head separates the head into a sliding surface (slider) 2, which is a first leg portion, and a sliding surface 4, which is a second leg portion. Of these, the sliding surface 2 has a built-in core 3 for recording and reproduction, and the second sliding surface 4 has its entire sliding surface in contact with the disk to stabilize the posture of the disk relative to the head body. It has become.

Reference numeral 8 denotes a groove formed on the sliding contact surface 2, which is formed in the direction in which the air relief groove 5 is formed, that is, in the movement direction A in the radial direction of the movement direction of the disk in contact with this magnetic head. It is formed at a predetermined angle α.

In the illustrated case, the forming angle is α<90'. That is, this groove 8 is formed approximately in the circumferential direction of the disk. Furthermore, it is preferable that the groove 8 be formed at a position upstream of the position where the recording/reproducing core 3 is arranged in the moving direction A of the disk.

Reference numeral 9 denotes a groove formed on another sliding contact surface 4, and like the groove 8, it is formed at almost the same angle with respect to the moving direction A of the disk.

With the above configuration, the dust that accumulates on the contact surface between the magnetic head and the magnetic disk due to the relative movement of the two is eventually discharged to the outside through the grooves 8 and 9 due to the relative movement. Become.

Furthermore, by positioning the grooves 8 formed on the sliding contact surface 2 on the upstream side of the recording/reproducing core placement surface, the disk from which dust has been removed comes into contact with the core, making it more effective. It is.

〔effect〕

As the configuration of the present invention has been specifically explained above, a groove for removing dust is formed on the sliding surface of the magnetic head in the approximately circumferential direction of the disk that comes into contact with the head. The relative movement between the magnetic head and the disk allows dust to be discharged to the outside through these grooves, preventing disk wear due to dust adhesion and errors in writing and reading information. It can be eliminated.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a magnetic head showing an embodiment of the present invention, Fig. 2 is a perspective view showing the configuration of a conventional magnetic head, and Fig. 3 shows a state of contact between the conventional magnetic head and a magnetic disk. FIG. 3 is a side view of the magnetic head. 1...Magnetic head 2.4...Sliding surface 3...Recording/reproducing core 8.9...Dust discharge groove Fig. 1 Fig. 2 Fig. 3

Claims (2)

[Claims] (1) In devices that write and read information by sliding in relative contact with a magnetic disk, grooves for discharging dust are formed on the sliding surface of the magnetic disk along approximately the circumferential direction of the magnetic disk. A magnetic head characterized by the following: (2) In claim (1), in the radial movement direction of the relative movement direction of the magnetic disk with respect to the magnetic head, the dust discharge groove is located upstream of the recording/reproducing core arrangement section. A magnetic head characterized by being formed.