JPS62154318A - Carriage mechanism for floppy disk device - Google Patents

Abstract

PURPOSE:To make sure azimuth adjustment possible by making azimuth adjustment of a magnetic head by an adjusting screw that adjusts the angle of installation of a carriage shaft in the direction horizontal to the disk face of a floppy disk. CONSTITUTION:A carriage 23 to which a magnetic head 21 is mounted is attached slidably in the direction shown by the arrow mark P to a carriage shaft 24. Shaft fitting stands 25a, 25b area attached to the carriage shaft 24 by adjusting screws 26a, 26b. By fine adjusting adjusting screws 26a, 26b, the angle Q of installation of the carriage shaft 24 in the direction horizontal to the face 22 of a floppy disk is changed. When azimuth waveform read out from the floppy disk 22 is judged as improper, the angle Q of installation of the carriage shaft 24 is changed by a minute amount slowly by operating adjusting screws 26a, 26b until the azimuth waveform shows an optimum value. Thus, simple and highly accurate azimuth adjustment can be made.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a carriage mechanism for a floppy disk device that makes it possible to adjust the azimuth of a magnetic head with respect to a disk surface after the floppy disk device is assembled.

[Technical Background of the Invention] Generally, as shown in FIG.
The positional relationship shown in is called "azimuth". In other words, if this azimuth adjustment is not done accurately,
This adversely affects data recording and reading operations on the 70 disc 11. This figure shows the peripheral configuration of a carriage 13 on which a magnetic head 12 is mounted.The carriage 13 slides the magnetic head 12 orthogonally to the track line 11a of the floppy disk 11 as shown by arrow Y. Therefore, it is attached to the shaft 14 which is rotated by 125ff in the sliding direction Y. This shaft 14 has shaft pedestals 15a at both ends thereof.

15b.

Here, the azimuth adjustment of the magnetic head 12 is carried out by adjusting the mounting angle of the magnetic head 12 with respect to the carriage 13 according to the designed assembly position of the carriage 13 determined in advance. This adjustment was not made after assembly.

[Problems in the Background Art] However, before assembling the floppy disk device as described above, the magnetic head 1 is
Merely adjusting the azimuth in step 2 ignores subtle deviations due to assembly errors during device assembly or the effects of peripheral parts after assembly, and the higher the density of the floppy disk 11, the more There is a drawback that the azimuth deviation after the device is assembled becomes a major problem.

[Object of the invention] This invention was made in view of the above problems.
To provide a carriage mechanism for a floppy disk device that enables reliable azimuth adjustment without ignoring azimuth deviation after the device is assembled.

[Summary of the Invention] In other words, the carriage mechanism of the floppy disk device according to the present invention includes an angle adjustment means for adjusting the installation angle of the carriage shaft in a direction horizontal to the disk surface of the floppy disk, and the angle adjustment means allows the magnetic The structure is such that the azimuth of the head can be adjusted.

[Embodiments of the invention] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows its configuration. In the figure, 21 is a magnetic head that contacts a floppy disk 22 to read and write information on the disk surface. This magnetic head 21 is attached to a carriage 23. Ru. This carriage 23 is moved by arrow P with respect to the carriage shaft 24.
The carriage shaft 24 is mounted so that it can slide in the direction shown by .
5a and 25b. For this shaft attachment, adjusting screws 26a and 26b are provided on the bases 25a and 25b, respectively, in a direction perpendicular to the carriage shaft 24. As shown in FIG. 2, these adjustment screws 26a and 26b press against the carriage shaft 24, and the mounting of this shaft 24 allows for position adjustment on the stands 25a and 25b, and the adjustment range is The adjustment range is limited to an extremely small amount by the shaft holding plate 27. That is, by finely adjusting each of the adjustment screws 26a and 26b, the floppy disk 22 of the carriage shaft 24 can be adjusted.
The installation angle Q in the direction horizontal to the surface changes.

Here, in order to check the azimuth accuracy of the magnetic head 21 when the peripheral part of the carriage as described above is installed in a floppy disk device, it is necessary to check the azimuth accuracy of the magnetic head 21 by checking that the azimuth waveform recorded on the 70-tube disk 22 is It is judged by whether it is output accurately. At this time, if it is determined that the azimuth waveform read from the floppy disk 22 does not indicate an appropriate value, the shaft can be mounted on the carriage shaft 24 by operating the adjustment screws 26a and 26b provided on the stands 25a and 25b. The installation angle Q is gradually changed slightly until the azimuth waveform shows the optimum value. As a result, the set angle of the magnetic head 21 with respect to the floppy disk 22 as indicated by the arrow X direction can be adjusted to an optimum state, and azimuth adjustment can be performed easily and with high precision.

Therefore, the azimuth can be adjusted sufficiently even when the density of the floppy disk 22 is increased. Moreover, this makes it possible to simplify the azimuth adjustment when the magnetic head 21 is assembled into the carriage 23. That is, the quality, productivity, and yield of the floppy disk device are all improved.

[Effects of the Invention] As described above, according to the present invention, the angle adjusting means for adjusting the installation angle of the carriage shaft in a direction horizontal to the disk surface of the 70-tip disk is provided, and the azimuth adjustment of the magnetic head is performed by this angle adjusting means. Since the present invention is configured so that the azimuth adjustment can be performed, it is possible to provide a carriage mechanism for a floppy disk device that enables reliable azimuth adjustment without ignoring azimuth deviation after the device is assembled.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing the carriage mechanism of a floppy disk device according to an embodiment of the present invention, FIG. 2 is a diagram showing the position adjustment mechanism of the carriage shaft in the carriage opening groove of the floppy disk device, and FIG. The figure is a schematic configuration diagram showing a conventional carriage mechanism for a floppy disk. 21... Magnetic head, 22... Floppy disk,
23... Carriage, 24... Carriage shaft,
25a, 25b...The shaft is mounted on a stand, 26a. 26b...Adjustment screw, 27...Shaft holding plate. Applicant's agent Patent attorney Takehiko Suzue Figure 1

Claims (1)

[Claims] A carriage equipped with a magnetic head that contacts a floppy disk, a carriage shaft to which this carriage is slidably attached, and an angle adjustment means for adjusting the installation angle of this carriage shaft in a direction parallel to the disk surface of the floppy disk. A carriage mechanism for a floppy disk device, characterized in that the azimuth adjustment of the magnetic head is performed by the angle adjustment means.