JPH01217754A - Magnetic head for floppy disk device - Google Patents

Abstract

PURPOSE:To shorten the time of the oscillation of a first converter due to the collision of a second converter by interposing a visco-elastic material between a first carrier and a first gimbals spring. CONSTITUTION:The visco-elastic material 30 is interposed between the first carrier 24 and the first gimbals spring 23. This visco-elastic material 30 is made of sponge or other material having an equal operation made of rubber, urethane foam or the like. This visco-elastic material 30 absorbs the oscillation of the first converter 22 generated due to the collision of the second converter 25 to the first converter 22 through a medium 21 when the second carrier 27 is lowered after the medium is mounted. Thereby, the time incapable of writing and reading an information signal can be substantially eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head for a floppy disk device using a flexible medium, among magnetic disk devices that are a type of external storage device for a computer.

[Conventional technology]

Conventionally, this type of magnetic head for floppy disk devices was
Visibility medium (floppy disk) as shown in Figure 2
A first transducer 22 for writing or reading information signals sliding on one side of the transducer 21 is held on a first gimbal spring 23, which in turn is held on a first carrier 24. This first carrier 24 does not have pressure fingers for determining the vertical position of the transducer, where the gimbal spring 23 is generally shaped as shown in plan view in FIG. It is made of thin stainless steel plate. Therefore, the first transducer 22 can perform rocking motion by torsionally deforming the positions 41a, 41b, 41c, and 41d shown in FIG. Movement is also possible in the direction (perpendicular to the gimbal spring plane).

The second transducer 25 sliding on the other surface of the medium 21 is
It is held by a second gimbal spring 26 having the shape shown in FIG. 3, and these are further held by a second carrier 27. A plate spring 28 is attached to the second carrier 27, and the second carrier 27 is connected to the first carrier 2 via this plate spring 28.
4. The load spring 29 is attached to the first carrier 24 and presses the second carrier 27 toward the first carrier 24 with a predetermined force.

Therefore, the second converter 25 and the first converter 22 clamp the medium 21 and cause it to slide.

With the above configuration, the transducers 22 and 25 follow the inclination and vertical movement of the medium 21 as the medium 21 rotates, and stable contact can be obtained.

[Problem to be solved by the invention]

However, according to the above-described conventional magnetic head for a floppy disk device, when the medium 21 is loaded or unloaded, the second carrier 27 is pulled up; .25, it is necessary to pull down the second carrier 27 at a predetermined speed.

Therefore, this operation causes the second transducer 25 to
1 to the first transducer 22 with considerable force. As a result, the first transducer oscillates and vibrates vertically at its natural frequency, and the contact between the medium and the transducer becomes unstable for several tens of milliseconds until the vibration subsides, during which time the information signal is The disadvantage is that it is not possible to write or read data.

SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic head for a floppy disk device that eliminates the above-mentioned drawbacks.

[Means to solve the problem]

In order to achieve the above object, the magnetic head for a floppy disk device of the present invention includes a first transducer that slides on one side of a visible medium to write and read information signals, and a first transducer that swings the first transducer. a first carrier provided with a first gimbal spring that allows dynamic movement and vertical movement; a viscoelastic material interposed between the first carrier and the first gimbal spring; A second transducer, which is disposed facing the first transducer and slides on the other surface with the medium sandwiched therebetween.
a transducer, and a second gimbal spring that holds the second transducer, and the second transducer is attached to the first carrier via a leaf spring that moves the second transducer up and down when the medium is attached or detached. a second carrier attached thereto; and a pressure spring attached to the first carrier and compressing the second carrier to sandwich the medium between the second transducer and the first transducer. It has the following.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a side view showing an embodiment of the present invention.

In the figure, the first converter 22 is attached to the first carrier 24 on the fixed side via the first gimbal spring 23, and the first converter 22 is attached to the second carrier 21 on the movable side via the second gimbal spring 26. A second transducer 2 facing the first transducer 22
5 is attached as in the conventional case. Further, both assemblies 24 and 27 are connected by a leaf spring 28, and the first carrier 2
The second carrier 27 is pressed down at the open end of a load spring 29 whose base is attached to 4. A flexible medium 21, ie a floppy disk, is placed between the retransducers 22,25.

The present invention includes the first carrier 24 and the first gimbal spring 23.
A viscoelastic material 30 is interposed between the two.

This viscoelastic material 30 is made of a sponge made of rubber, urethane foam, etc., or something that has an equivalent effect.

A viscoelastic material 30 interposed between the first carrier 24 and the first gimbal spring 23 allows the second transducer 25 to transfer the medium when the second carrier 27 is lowered after the medium 21 is attached. The first transducer 22 absorbs vibrations of the first transducer 22 resulting from a collision with the first transducer 22 through the first transducer 22 . Therefore, vibrations that conventionally lasted several tens of milliseconds after a collision can be almost eliminated.

〔Effect of the invention〕

Therefore, according to the present invention, the vibration of the first converter caused by a collision after the medium is loaded can be absorbed in a short time, thereby substantially eliminating the time during which information signals cannot be written or read. have

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the present invention, FIG. 2 is a side view showing a conventional technique, and FIG. 3 is a plan view of a general gimbal spring. 21... Medium 22... First transducer 23... First gimbal spring 24... First carrier 25... Second converter 26... Second gimbal spring 27...・Second carrier patent applicant NEC Corporation Figure 1

Claims (1)

[Claims] 1. A first transducer that slides on one side of a flexible medium to write and read information signals, and a first gimbal spring that holds the first transducer so that it can swing and move up and down. a viscoelastic material interposed between the first carrier and the first gimbal spring;
arranged facing the transducer, with the medium sandwiched therebetween;
a second transducer that slides on another surface; and a second gimbal spring that holds the second transducer; a leaf spring that moves the second transducer up and down when attaching or removing the medium, etc. a second carrier attached to the first carrier via;
A floppy disk characterized in that it has a pressure spring attached to the first carrier and presses down the second carrier to sandwich the medium between the second converter and the first converter. Magnetic head for disk devices.