JPS61204861A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To control the inclination of a magnetic head and the shake of the magnetic head in the vertical direction of a magnetic disc and suppress the resonance of the arm mechanism side by constituting a gimbals spring body so that it has a number of degrees of freedom of motion only in the peripheral direction of the magnetic disc. CONSTITUTION:The first gimbals spring body 4 is so constituted that it has a number of degrees of freedom of motion in the radial direction and the peripheral direction of a magnetic disc 3. A pivot supporting body 1a which is formed together with a carriage 1 as one body and has the front end surface formed to an arc or a plane is brought into contact with the center on the rear surface of the gimbals spring body 4. The first magnetic head 5 is attached to the center on the front surface of the first gimbals spring body 4. The second gimbals spring body 8 is attached to the lower surface in the front end of an arm mechanism 6. The gimbals spring body 8 has a number of degrees of freedom of motion in the peripheral direction of the magnetic disc 3. A pivot supporting body 6a which is formed together with the arm mechanism 6 as one body and has the front end surface formed to an arc or a plane is abutted on the center on the rear surface of the gimbals spring body 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a magnetic recording and reproducing apparatus suitable for recording and reproducing a flexible double-sided magnetic disk.

[Background of the invention]

This type of device, as described in Japanese Patent Publication No. 58-43826, includes a carriage, an arm mechanism rotatably supported by the carriage, and a pressurizing force that presses the arm mechanism toward the carriage. a pressure spring, a gimbal spring supported at the ends of the carriage and the arm machine so as to face each other, and a magnetic head mounted at the center of these gimbal springs so as to face each other;
There is a known device that includes a pin that supports the center of the back surface of both gimbal springs so as to suppress the backward movement of the magnetic head. In this device, the arm mechanism side uses a gimbal spring body that swings back and forth, a pressure spring, and a support spring that rotatably supports the arm mechanism on the carriage. When the magnetic head is brought into contact with the magnetic disk by rotating the arm mechanism, the parasitic vibration generated in the gimbal spring body causes the pressure spring, arm mechanism, and support spring to resonate, causing both magnetic heads to This has the drawback of making recording and reproducing unstable and damaging the magnetic disk. This drawback becomes more noticeable as the recording density of the magnetic disk increases and as the thickness of the magnetic disk decreases, making it possible to create a magnetic recording and reproducing device for magnetic disks that is more compact due to higher density. This is an extremely important matter that must be resolved.

[Object of the Invention] An object of the present invention is to prevent both magnetic heads from swinging in the direction perpendicular to the reference plane of the magnetic disk and to suppress resonance of the arm mechanism, thereby achieving flexibility and high density. An object of the present invention is to provide a magnetic recording/reproducing device which is extremely suitable for recording/reproducing information on a double-sided magnetic disk.

[Summary of the invention]

The gist of the present invention is to provide a carriage movable in the radial direction of the magnetic disk on one side of a rotating flexible double-sided magnetic disk, and a second gimbal spring body attached to the carriage via a first gimbal spring body. a magnetic head; an arm mechanism located on the other side of the magnetic disk and provided so as to be openable and closable with respect to the carriage; and a second magnetic head attached to the arm mechanism at a position facing the first magnetic head. The second one is attached via the gimbal spring body.
and a biasing spring engaged with the arm mechanism to press the second magnetic head against the second magnetic head via the magnetic disk with a predetermined pressure. The first gimbal spring body is
The second gimbal spring body is supported in a fixed positional relationship on the carriage at opposing positions, and has a degree of freedom of movement in the circumferential direction and radial direction of the magnetic disk. The head is supported in a fixed positional relationship with respect to the arm mechanism at opposing positions, and has a degree of freedom of movement only in the circumferential direction of the magnetic disk.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In the drawings, reference numeral 1 denotes a carriage made of synthetic resin or the like, which is slidably attached to a guide shaft 2 supported on a chassis (not shown). The sliding direction of the carriage matches the radial direction of the flexible double-sided magnetic disk (hereinafter referred to as magnetic disk) 3.

A first gimbal spring body 4 made of stainless steel is attached to the top surface of the front end of the carriage 1 by adhesive or the like. The first gimbal spring body 4 is configured to have a degree of freedom of movement in the radial direction and circumferential direction of the magnetic disk 3. A pivot support 1a, which is formed integrally with the carriage 1 and has an arcuate or planar end surface, is brought into contact with the center of the back surface of the first gimbal spring body 4.

A first magnetic head 5 is attached to the center of the surface of the first gimbal spring body 4 by adhesive or the like.

An arm mechanism 6 is provided on the carriage 1 so that it can be opened and closed by a support spring body 7 made of a leaf spring-like hinge.

The arm mechanism 6 is made of synthetic resin, steel plate, or the like.

A second gimbal spring body 8 made of stainless steel is attached to the lower surface of the tip of the arm mechanism 6 by adhesive or the like. The second gimbal spring body 8 is configured to have a degree of freedom of movement in the circumferential direction of the magnetic disk 3.

An arm mechanism 6 is located at the center of the back of the second gimbal spring body 8.
A pivot support 6a is brought into contact with the pivot support 6a, which is formed integrally with the pivot support 6a and has an arcuate or planar end surface. A second magnetic head 9 is attached to the center of the surface of the second gimbal spring body "6" by adhesive or the like.

A biasing spring 10 is attached to the carriage 1 and engaged with the arm mechanism 6 to press the second magnetic head 9 against the first magnetic head 5 via the magnetic disk 3 with a predetermined pressure. The biasing spring 10 is formed from a coil spring, a coil torsion spring, a spring, or the like.

In the above configuration, the second magnetic head 9 is biased by the spring]
0 through the magnetic disk 3 to the first magnetic head 5
When the two heads 5 and 9 are pressed against each other, the heads 5 and 9 have a fixed positional relationship with the carriage 1 at opposing positions. At this time, the position of the reference plane of the magnetic disk 3 is set by the first magnetic head 5, and the first magnetic head 5
The inclination of is regulated by the second magnetic head 9. Moreover, the gimbal spring bodies 4 and 8 allow the first magnetic head 5 and the second magnetic head 9 to follow both sides of the magnetic disk 3, and can provide extremely good contact pressure and provide stable output. . Furthermore, when the second magnetic head 9 is pressed against the first magnetic head 5 via the magnetic disk 3, the arm mechanism 6 side does not resonate, and the pivot supports 1a and 6a prevent the magnetic disk 3 from being pressed. There is no vertical movement.

〔Effect of the invention〕

As described above, according to the present invention, there is provided a carriage movable in the radial direction of the magnetic disk on one side of a flexible double-sided magnetic disk that rotates once, and a first gimbal spring body connected to the carriage. mounted second
a magnetic head; an arm mechanism located on the other side of the magnetic disk and provided so as to be openable and closable with respect to the carriage; and a second magnetic head attached to the arm mechanism at a position facing the first magnetic head. a second magnetic head attached via a gimbal spring body; and an urging force engaged with the arm mechanism to press the second magnetic head against the second magnetic head via the magnetic disk with a predetermined pressure. In the magnetic recording/reproducing device comprising a spring, the first gimbal spring body is supported in a fixed positional relationship with the carriage at a position where both the heads face each other, and is supported in a circumferential direction of the magnetic disk and The second gimbal spring body has a degree of freedom of movement in the radial direction, and is supported so as to have a fixed positional relationship with respect to the arm mechanism at a position where both the heads face each other,
In addition, since the configuration has a degree of freedom of movement only in the circumferential direction of the magnetic disk, the inclination of both magnetic heads and the vertical swing of the magnetic disk of both magnetic heads are restricted, and resonance on the arm mechanism side is prevented. This new magnetic recording and reproducing device is extremely suitable for recording and reproducing on double-sided magnetic disks that are compact, flexible, and have a high density.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a side view of a main part in section, FIG. 2 is a top view of the main part, and FIG. 3 is a bottom view of the main part. 1... Carriage, 3... Magnetic disk, 4...
First gimbal spring body, 5...first magnetic head, 6
... Arm mechanism, 7... Support spring, 8... Second gimbal spring body, 9... Second magnetic head, 10...
・Biasing spring.

Claims (1)

[Claims] 1. A carriage movable in the radial direction of the magnetic disk on one side of a rotating flexible double-sided magnetic disk, and a second magnetic head attached to the carriage via a first gimbal spring body. , an arm mechanism located on the other surface side of the magnetic disk and provided so as to be openable and closable with respect to the carriage; and a second gimbal spring body attached to the arm mechanism at a position facing the first magnetic head. a second magnetic head attached through the magnetic disk; and a biasing spring engaged with the arm mechanism to press the second magnetic head against the first magnetic head with a predetermined pressure through the magnetic disk. In the magnetic recording/reproducing device, the first gimbal spring body is supported in a fixed positional relationship with the carriage at a position where both the heads face each other, and is movable in the circumferential direction and the radial direction of the magnetic disk. In addition to having the degree of freedom of
The second gimbal spring body is supported so as to have a fixed positional relationship with the arm mechanism at a position where both the heads face each other, and has a degree of freedom of movement only in the circumferential direction of the magnetic disk. A magnetic recording and reproducing device characterized by having the following configuration.