JPH0744980A - Magnetic head supporting mechanism - Google Patents

Abstract

PURPOSE:To provide a magnetic head supporting mechanism which does not depend on variations, etc., of a magnetic disk and is free from contact defects with a magnetic recording and reproducing device. CONSTITUTION:This magnetic head supporting mechanism is so constituted that the magnetic head 1 and a negative pressure stabilizing plate 2 are pressed to the disk 17 with an adequate prepressure by a carriage consisting of the constitution separated to a carriage contact part 3 and a carriage transporting part 4 and a spring 5 in common use as compression torsion. Then, the higher density and higher capacity of the medium are attained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus used in an electronic still camera or the like, and more particularly, to a negative pressure stabilizing plate adapted to attract a flexible sheet-like magnetic disk to a magnetic head by negative pressure. Magnetic head support mechanism.

[0002]

2. Description of the Related Art Conventional magnetic heads have their positions and orientations adjusted with reference to the disk mounting surface of a spindle motor that rotationally drives a disk that is a magnetic recording medium, and are integrated with a carriage that carries and transports the magnetic head. It was fixedly placed.

A conventional example will be described below with reference to the drawings. 3 and 4 are schematic views of a conventional example of a magnetic head support mechanism. The carriage 12 is an integrated type with no distinction between the transport portion and the contact portion, and the negative pressure stabilizer 2 and the magnetic head 1 are carried by the carriage. 12 is fixedly supported by a method such as adhesion. Here, in order to cope with variations in the magnetic surface height of the magnetic disk, the negative pressure stabilizing plate 2 and the magnetic head 1 are fixed to the carriage 12 with precise dimensional accuracy.

The carriage 12 has a structure in which one guide guide 6a is sandwiched by the guide retainer 7, but is held by the lead spring 16 against the other guide guide 6b as shown in FIG. Here, the lead spring 16 is fixed to the carriage 12, and the convex portion of the tip end thereof is fitted to the lead screw 14. Here, as the lead screw 14, which is the output shaft of the stepping motor 13, rotates, the carriage 12 moves horizontally via the reed spring 16, and tracking is performed.

[0005]

However, in the prior art, since the height of the reference surface mounted on the spindle motor of the disk and the height of the magnetic surface with which the magnetic head comes into contact vary, a negative pressure stabilizer is used. There was a problem that the magnetic head that had been used could not stably contact the disk.

If the negative pressure stabilizing plate is made smaller in diameter or the disc is rotated at a slower speed, the negative pressure is lowered and the contact becomes unstable. Was also an obstacle.

[0007]

In order to solve these problems, the present invention provides a flexible magnetic recording medium and a magnetic head for recording or reproducing by contacting the rotating surface of the magnetic recording medium and moving it in the radial direction. In a magnetic recording / reproducing apparatus having a magnetic head, a carriage for mounting and carrying the magnetic head moves along a guide, and a magnetic head is arranged so that the magnetic head comes into contact with the magnetic recording medium with an appropriate contact pressure. It is divided into a contact portion rotatably joined to the transport portion.

Here, a magnetic head support mechanism of a magnetic recording / reproducing apparatus is provided in which a negative pressure stabilizing plate and a magnetic head are supported by an elastic torsion spring or the like for stable contact.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a schematic diagram of the configuration of an embodiment of the present invention.
1A is a plan view and FIG. 1B is a side view. In the figure, the carriage transfer unit 4 is composed of a guide retainer 7 and a guide guide 6a as in the conventional case, and the support of the other guide guide 6b also transmits the driving force of the stepping motor via the lead spring as in the conventional case. Then, do tracking. The carriage contact portion 3 is rotatably attached to a shaft 11 provided on the carriage transport portion 4 by a bearing portion 8. Here, 9 is a washer.

2A and 2B are schematic diagrams of the carriage contact portion 3, FIG. 2A being a plan view and FIG. 2B being a side view. In the figure, the carriage contact portion 3 is preloaded in the preload direction shown in FIG. That is, the magnetic head 1 and the negative pressure stabilizer 2
Is always preloaded in the direction of contact with the disk 17, and its initial position can be adjusted by the height adjusting screw 10.

Further, in order to maintain the tracking accuracy, a compression load is applied to the bearing portion 8 of the carriage abutting portion 3 by the compression-torsion-combined spring 5 to prevent a tracking error in the moving direction of the carriage 12. Disk 17
Is inserted, the magnetic head 1 and the negative pressure stabilizing plate 2 come into contact with the magnetic surface of the disk 17 with an appropriate preload. The initial contact preload can be adjusted with the height adjusting screw 10 as described above. However, even if the magnetic surface height of the disk 17 varies, the compression torsion spring 5 to the magnetic head 1 and the negative pressure stabilizing plate 2 can be used. From the fulcrum, that is, the distance from the fulcrum to the action point is long, the change in the preload is small and the influence of the disc 17 variation is small.

Next, when the disk 17 starts rotating, the apparent rigidity of the disk 17 is increased by the centrifugal force, and the magnetic head 1 and the negative pressure stabilizing plate 2 are pushed down to an appropriate contact height, and a stable contact is achieved. The contact state can be obtained.

[0013]

As described above, according to the structure of the present invention, the carriage is divided into the carrying portion and the abutting portion, so that the variation in the magnetic surface height of the disk and the negative pressure of the negative pressure stabilizing plate can be suppressed. Instead, a stable contact state can always be maintained, and the density and capacity of the medium can be increased.

Further, since precise bonding precision is not required for the carriage, the magnetic head and the negative pressure stabilizing plate, the manufacturing process such as adjustment can be simplified.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a configuration in an embodiment of the present invention.

FIG. 2 is a schematic view of a carriage contact portion in the embodiment of the present invention.

FIG. 3 is a schematic diagram of a configuration in a conventional example.

FIG. 4 is a schematic diagram showing a configuration connected to a tracking drive system in a conventional example.

[Explanation of symbols]

 1 Magnetic Head 2 Negative Pressure Stabilizer 3 Carriage Abutment Part 4 Carriage Transfer Part 5 Compression Torsion Combined Spring 6a, 6b Guide Guide 8 Bearing Part 10 Height Adjusting Screw 11 Shaft 17 Disk

Claims (1)

[Claims] 1. A magnetic recording / reproducing apparatus equipped with a flexible magnetic recording medium and a magnetic head for recording or reproducing by moving in a radial direction in contact with a rotating surface of the magnetic recording medium. The carrying carriage is divided into a carrying part in which the carriage moves along a guide and an abutting part rotatably joined to the carrying part so that the magnetic head comes into contact with the magnetic recording medium with an appropriate contact pressure. A magnetic head support mechanism characterized by being configured as follows.