JPS61269269A - Magnetic recording device - Google Patents

Abstract

PURPOSE:To increase the moving extent of a head by which a motor can execute a one rotation, by winding a belt around one piece of cylindrical shaft and fixing it to a groove of a rotary cylinder. CONSTITUTION:A rotary cylinder 5 is fixed to a motor 9, a sheet-shaped belt 8 is wound around the rotary cylinder 5, one end is fixed to a rotary arm 3 with a screw 10, and the other end is fixed to a plate string 4 which has been fixed to the rotary arm 3. When the motor 9 rotates, the belt 8 which has been wound around the rotary cylinder 5 moves, and the rotary arm 3 which has been attached so as to be rotatable centering around a pivot 11 rotates. A magnetic head 2 is fixed to the rotary arm 3 so as to move along a magnetic disk 1 and moves on the magnetic disk 1. in the rotary cylinder 5, a groove is cut in the axial direction, and the belt 8 is wound around a cylindrical shaft 12 and fixed to a groove of the belt 8. When the rotary cylinder 5 rotates by following up a rotation of the motor 9, it can execute one round rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head moving structure of a magnetic recording device.

[Summary of the invention]

In the magnetic head moving structure of a magnetic recording device, the present invention involves winding and fixing a thin plate-shaped belt around a thin cylindrical shaft in a groove cut in the axial direction of a rotating cylinder fixed to the motor shaft. Wrap around the rotating cylinder via a belt,
It has a structure that moves the magnetic head, making it possible for the motor to rotate once.

[Conventional technology]

In the magnetic head moving structure of a conventional magnetic recording device, as shown in FIG. Ta.

[Problems and objects to be solved by the invention] However, in the above-mentioned conventional technology, when the rotating cylinder 5 attempts to rotate nearly one revolution, the belt 8 interferes with the fixed plate 6, so that the belt 8 cannot rotate until it completes one revolution. The problem is that it cannot be done. Therefore, the present invention is intended to solve such problems, and its purpose is to allow the motor to rotate for one revolution.
The purpose is to increase the amount of head movement.

[Means for solving problems]

The magnetic recording device of the present invention is a magnetic recording device in which a thin belt is wound around a rotating cylinder fixed to the shaft of a motor, and a magnetic head is moved over a magnetic disk surface via the belt. It is characterized by being wrapped around a shaft and fixed in a groove cut in the axial direction of a rotating cylinder.

[Effect]

According to the above configuration of the present invention, there is no interference between the belt and the fixed plate, and the rotation angle becomes large.

〔Example〕

An embodiment of the invention is shown in FIG. The rotating cylinder 5 is fixed to the motor 9. The thin belt 8 is connected to the rotating cylinder 5
and one end is attached to the rotary arm 3 with a screw 10.
The other end is fixed to a leaf spring 4 fixed to the rotary arm 3. As the motor 9 rotates, the belt 8 wrapped around the rotating cylinder 5 moves, and the rotary arm 5 rotatably attached around the pivot 11 rotates. The magnetic head 2 is fixed to a rotary arm 3 and moves over the magnetic disk 1 so as to move along the magnetic disk 1. Figure 3 shows
A developed view of the belt 8 is shown. FIG. 4 shows a method of fixing the belt 8 to the rotating cylinder 4. A groove is cut in the rotating cylinder 4 in the axial direction, and a belt 8 is wound around the cylindrical shaft 12 and fixed in the groove of the belt 8. When the rotating cylinder 5 rotates in accordance with the rotation of the motor 9, it can rotate once from the position shown in FIG. 5 to the position shown in FIG. 6.

Although a rotary arm type head moving mechanism has been described here, a linear type head moving mechanism can also be used.

〔Effect of the invention〕

As explained above, the present invention uses a simple method of wrapping the belt around one cylindrical shaft and fixing it in the groove of the rotating cylinder.
Even if the motor can rotate once, the effect is that the head movement becomes larger.

[Brief explanation of the drawing]

FIG. 1 shows a perspective view of a head moving structure according to the present invention. FIG. 2 shows a perspective view of a conventional head moving structure. Fifth
4 is a plan view of the belt according to the present invention, FIG. 4 is a perspective view of a method of fixing the belt, and FIGS. 5 and 6 are perspective views of the belt in a rotating state. 1...Magnetic disk 2...Magnetic head 5...φ rotary arm 4...
...Flat spring 5 ...Rotating cylinder 6 ...Fixing plate 7 ...Screw 8 ......・Belt 9... Motor 10... Screw 11... Pivot 12... Cylindrical shaft or higher

Claims (1)

[Claims] (1) In a magnetic recording device in which a thin plate-like belt is wound around a rotating cylinder fixed to the shaft of a motor, and a magnetic head is moved over a magnetic disk surface via the belt, the belt is wound around a thin cylindrical shaft. and is fixed in a groove cut in the axial direction of the rotating cylinder.