JPS63106973A - Adjusting device for track reference sensor of flexible disk device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to an improvement of a track reference sensor adjustment device for a flexible disk device that records information on or reproduces information from a disk-shaped magnetic medium.

[Conventional technology]

FIG. 2 is an exploded perspective view showing a conventional track reference sensor adjustment device. In FIG. A carriage for moving the magnetic head to the track, (2) a shielding plate for shielding the optical reference sensor (described later) provided at one end of the carriage;
3] is the above-mentioned reference sensor for identifying the reference track; (4)
is the adjustment arm with this reference sensor integrally attached, (5
) is the main body frame, (6) is an adjustment screw that is screwed into this main body frame and whose tip abuts against the adjustment end (4a) of the adjustment arm (4); however,) is the adjustment screw of the adjustment arm (4). This is the rotational support shaft.

Next, the operation of the conventional device will be explained with reference to FIG. That is, the carriage (1) is driven by a step motor (not shown) and positioned at a desired track on the two disc-shaped magnetic media, but at this time, since the step motor does not have a particular reference position, Reference sensor (3) as described above for track positioning relative to the magnetic medium.
The reference position is set with . By the way, the total 4 adjustment ranges of this reference sensor (3) differ depending on the type of flexible disk device, but since they must be adjusted within a range of several tens of microns, 14 adjustment arms (4) are used to facilitate adjustment. is attached to this reference sensor (31 in a bottle) and the adjustment screw (6) provided on the main body frame (5).
), rotate the adjustment arm (4) clockwise as shown by the arrow in the figure, and move the reference sensor (3) from the inner circumference of the magnetic medium toward the outer circumference. Okay, the reference position has now been adjusted.

[Problem that the invention seeks to solve]

Since the conventional reference sensor adjustment device is configured as described above, the reference sensor (3) must be adjusted from the inner circumference of the magnetic medium toward the outer circumference thereof. However, the adjustment range of this reference sensor (3) is
As shown in the figure, when the reference sensor (3) is between the reference track O and the 2a) rack and directly above the 2a track, it is necessary to prevent the reference sensor (3) from working. The purpose of the present invention is to provide a base sensor adjustment device which requires movement of the position and requires time and effort for this rough adjustment, and which has a narrow adjustment range and a wide adjustment range.

[Means for solving problems]

In the case of this invention, the position of the adjustment part (7a) of the adjustment arm (7) provided integrally with the reference sensor (3) is changed so that the movement direction in which the reference sensor (3) is adjusted is adjusted to the outer periphery of the magnetic medium. The adjustment is made from the center toward the inner circumference.

[Effect]

In the case of this invention, the adjustment direction of the reference sensor (3) is set from the outer circumference to the inner circumference of the magnetic medium.

This means that the initial rough adjustment in part (5) in the conventional example is of course unnecessary), and the adjustment range can be widened.

〔Example〕

FIG. 1 showing an embodiment of the present invention will be described below. That is, in Fig. 1, the same parts as in the conventional one are given the same reference numerals, and the redundant explanation thereof will be omitted, but (6) in Fig. 9 is screwed into the main body frame (5), and its tip is the same as above. It is an adjustment screw that abuts against the adjustment end (7a) of the adjustment arm (7), and is characterized in that this adjustment end (7a) is located on the opposite side from the conventional case, etc. In this respect, the structure is similar to the conventional one.

In other words, since the present invention is constructed as described above, the adjusting arm (7) can be adjusted by turning the adjusting screw (6).
rotates counterclockwise as shown by the arrow.

As a result, the reference sensor (3) is moved and adjusted from the outer circumference of the disc-shaped magnetic medium toward the inner circumference.
This arrangement is characterized in that there is no need for coarse adjustment in the conventional rotating section shown in FIG. 4, and that the adjustment range can be widened.

In addition, although the reference sensor and the adjustment arm were configured separately in the above embodiment, it goes without saying that the reference sensor may have an integral configuration including the adjustment arm.

〔Effect of the invention〕

In the track reference sensor adjustment device for a flexible disk drive according to the present invention, the reference sensor is adjusted from the outer circumference to the inner circumference of the magnetic medium, so initial rough adjustment is not necessary and the adjustment range is wide. Since it is wide, it has the effect of allowing easy adjustment.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of the track reference sensor adjusting device for a flexible disk device of the present invention, and FIG.
The figure is an exploded perspective view showing a conventional example, FIG. 3 is a plan view of the assembled state, and FIG. 4 is an explanatory diagram showing the adjustment range of the reference sensor. In addition, (3) in the figure is the reference sensor 15) V1 main body frame. (6) is an adjustment screw, (7) is an adjustment arm, and (7a) is an adjustment end. In other figures, the same reference numerals indicate the same parts.

Claims (1)

[Claims] A reference sensor for positioning a carriage holding a magnetic head with respect to a specific track on a magnetic medium, wherein the reference sensor for identifying the reference track on the magnetic medium is arranged in a direction from the outer circumference to the inner circumference of the magnetic medium. This is attached to an adjusting arm rotatably supported on the main body frame so that it can be rotated toward the main body frame, and the adjusting end of this adjusting arm is brought into contact with the tip of an adjusting screw provided on the main body frame. A track reference sensor adjustment device for flexible disk equipment featuring: