JPH0123869B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic head support mechanism for a double-sided flexible disk device.

FIG. 1 is a cross-sectional configuration diagram showing the configuration of a conventional double-sided flexible disk device. In FIG. 1, reference numeral 1 indicates a flexible disk. This flexible disk 1 is adapted to be rotated by a rotation mechanism (not shown). Magnetic head assemblies 2a and 2b are positioned on the front and back surfaces of the flexible disk 1, sandwiching the flexible disk 1 therebetween. These magnetic head assemblies 2a and 2b are shown in FIG.
It is constructed as shown in the side view of FIG. 2B and the plan view of FIG. 2B. That is, a gimbal plate 22 having a gimbal structure is formed at the tip of the flexior arms 21a and 21b that are formed in parallel on both sides. A magnetic head 23 is fixed to the center of the gimbal plate 22. This magnetic head 23 has flexible arms 21a and 21b.
On the other hand, the head pressing leaf spring 24 formed in the center allows the load arm 25 attached to this pressing leaf spring 24 and the pivot 2 provided at the tip of this load arm 25 to
6, it is pressed against the front and back surfaces of the flexible disk 1. Furthermore, a spacer 28 is provided at the root portion 27 where the flexior arms 21a, 21b and the pressing plate spring 24 are formed.

The magnetic head assembly 2a configured in this way,
The base portions of the swing arms 2b are respectively attached to the swing arms 4a and 4b by screws 3a and 3b. One ends of the swing arms 4a, 4b are attached to the carriage 7 via leaf spring hinges 5a, 5b, respectively. Further, the upper swing arm 4a is configured to be pressurized downward by a head load spring 6a. Similarly, the lower swing arm 4b is
It is adapted to be pressurized upward by a head load spring 6b. Note that FIG. 1 shows a state in which the flexible disk 1 can be read and written.

However, in the magnetic head support mechanism of the double-sided flexible disk device configured as described above, when the rotating flexible disk 1 waves or its position changes, the head assembly 4
The magnetic head 23 is supported by the gimbal plate 22 of each gimbal structure, the flexure arms 21a and 21b, and the head pressing leaf spring 24.
The magnetic head 2 follows the flexible disk 1 and is brought into close contact with the front and back surfaces of the flexible disk 1.
3's output signal sometimes became unstable.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a magnetic head support mechanism for a double-sided flexible disk device that can stably obtain an output signal from the magnetic head.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a sectional view showing a magnetic head support mechanism of a double-sided flexible disk device according to an embodiment of the present invention. In Figure 3, the symbol 3
1 indicates a flexible disk. This flexible disk 31 is adapted to be rotated by a rotation mechanism (not shown). Opposing the front and back surfaces of this flexible disk 31,
The magnetic head 3 is placed on the surface of the flexible disk 31.
2, magnetic heads 33 are located on the back surface of the flexible disk 31, respectively. The magnetic head 32 is fixedly attached directly to an arm 34 made of plastic, for example. One end of this arm 34 is attached to a side 36a of a carriage 36 via a leaf spring-like hinge 35. Furthermore, this arm 34,
A carriage 3 formed on the upper part of this arm 34
A coil spring 37 is interposed between the upper part 36b of 6 and the upper part 36b of 6.

On the other hand, the magnetic head 33 is attached to the center of the surface of a gimbal plate 38 having a gimbal structure.
This gimbal plate 38 is connected to the lower part 3 of the carriage 36.
It is provided so as to cover the upper surface of the through hole 39 provided in 6c. And this gimbal board 3
The center portion of the back surface of the holder 8 is pressed upward by a support leaf spring 41 via a pivot 40. One end of this support plate spring 41 is connected to the through hole 3.
It is fixed to the side edge of 9.

Next, the operation of the above embodiment will be explained. The arm 34 to which the magnetic head 32 is attached is moved upward around the hinge 35 when the flexible disk 31 is inserted or removed. The flexible disk 31 is set and rotated.
When the state shown in the figure is reached, the device becomes readable and writable. At this time, magnetic head 3
2 is pressed onto the surface of the flexible disk 31 via the arm 34 by the coil spring 37. Further, the magnetic head 33 is pressed against the back surface of the flexible disk 31 by the leaf spring 41 via the pivot 40 and the gimbal plate 38. Therefore, the surface of the magnetic head 33 that is in contact with the back surface of the flexible disk 31 is
The magnetic heads 32 and 33 are in close contact with the front and back surfaces of the flexible disk 31, respectively.

In such a magnetic head support mechanism for a double-sided flexible disk, the magnetic head 32 is fixedly attached directly to the arm 34 without using a gimbal plate, and the magnetic head 33 is supported by a gimbal plate 38 and a leaf spring 41. , can follow the flexible disk 31, so when the magnetic heads 32 and 33 are in the read or write state, the flexible disk 31
Even if the magnetic head waves or changes its position, the position of the magnetic head hardly changes. Therefore, stable output signals can be obtained from the magnetic heads 32 and 33. In addition, the magnetic head 32 is directly fixedly attached to the arm 34 without using a gimbal plate as in the past, and has a stable posture. This has the effect that the surface of the flexible disk 31 is less likely to be scratched when the flexible disk 31 is moved.

Note that in the above embodiment, the magnetic head 33
is attached to a gimbal plate 38 provided at the lower part 36c of the carriage 36, but the lower part 36c and the side part 36a of the carriage 36 are separated and engaged with a leaf spring-like hinge to make it flexible. The magnetic head 33 may be moved downward when the disk 31 is inserted or removed. Further, the support plate spring 41 may be a rigid body. By appropriately selecting the rigidity of the gimbal plate 38, it is not necessary to use the pivot 40 and the support plate spring 41.

As described above, according to the present invention, it is possible to provide a magnetic head support mechanism for a double-sided flexible disk device that can stably obtain an output signal from the magnetic head.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional configuration diagram showing a magnetic head support mechanism of a conventional double-sided flexible disk device, FIGS.
The figure is a sectional view showing a magnetic head support mechanism of a double-sided flexible disk device according to an embodiment of the present invention. 31...Flexible disk, 32, 33...
... Magnetic head, 34 ... Arm, 35 ... Hinge, 36 ... Carriage, 37 ... Coil spring,
38...Gimbal plate, 39...Through hole, 40...
Pivot, 41... Support plate spring.

Claims (1)

[Claims] 1. A first magnetic head for reading and writing data on the front surface of a flexible disk, and a magnetic head provided opposite to the first magnetic head for reading and writing data on the back surface of the flexible disk. a second magnetic head for the second magnetic head, a carriage to which the second magnetic head is attached via a gimbal plate, one end of which is attached to the carriage, and the first magnetic head is directly fixedly attached. A magnetic head support mechanism comprising an arm and pressing means for pressing the arm against the surface of the flexible disk.