JPH02199663A - Head supporting device for double-sided flexible disk device - Google Patents

Abstract

PURPOSE:To hold an arm to a substantial position in a direction perpendicularly to the face of a flexible disk even when deformation or distortion exists in the leaf spring of the arm by providing in addition the arm restricting the distortion of the leaf spring and a series of rotary supporting part on the side opposite to a stopper. CONSTITUTION:The rotational motion of an arm 3 in a direction toward a 1st head slider 2 is limited by the engagement with a stopper 14a formed to the free end of a sub frame 14 and the butting of its rotary support part 3b provided on the tip of an arm part 3a and the position of the arm 3 at recording and reproduction is determined. Thus, the position of the arm 3 at the recording and reproduction perpendicular to the face of the flexible disk 16 depends on the two positions, that is, the stopper 14a and the arm rotary supporting part 3b. Thus, even when deformation or distortion exists in the leaf spring 13 of the arm 3, the arm 3 is surely supported to the substantial object position perpendicular to the face of the flexible disk 16.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a head support device for a single-sided flexible disk device, and particularly to a means for stably supporting an arm.

[Prior Art] Fig. 3 is a side cross-sectional view showing a head support device of a conventional double-sided flexible disk device disclosed in Japanese Patent Application Laid-open No. 62-6458. ) radially movable carriage,
(2) is a first head slider fixed to one end of this carriage (11), and arm 1 (12) is attached to the other end of the carriage (11) so as to be rotatable about a leaf spring (13). , (5) is a second head slider fixed to the arm (12) via a gimbal spring (6). The arm (12) attaches the fixed end of the leaf spring (13) integrally molded to the subframe (14) to the carriage (11) via the retaining plate (10) with the screw (9). The leaf spring (13) is used as a fulcrum to rotate, and the sub-frame (14)
) is biased toward the first head slider (2) by a torsion spring (15) installed at one end of the head slider (2). Also, the rotational movement of the arm (work 2) in the direction toward the first head slider (2) is as follows.

The position of the arm (12) during recording and reproduction is determined by engaging with a stopper (14a) attached to the free end of the subframe (14). Further, FIG. 4 shows the insertion and ejection of the flexible disk (16), in which case the second head slider (5) is inserted into the first head slider.
(2), allowing the flexible disk (16) to be inserted and ejected.

Next, the operation will be explained. That is, as shown in FIG. 4, when the flexible disk (16) is not attached, the arm (12) is lifted by a head load operating member (not shown).

At the time of recording and reproduction, the flexible disk (16) is mounted as shown in FIG. ) side. As a result, the second head slider (5) is pressed against the first head slider (2) via the flexible disk (16) with a pressing force corresponding to the deflection of the gimbal spring (6).
).

The spring force of the torsion spring (15) is such that the second head slider (5)
The stop bar (14a) is set to be sufficiently larger than the force pushed back from the head slider (2), and is therefore attached to the free end of the subframe (14).
This positions the arm (12) at a predetermined position in the direction perpendicular to the surface of the flexible disk (16) during recording and reproduction, and this position determines the amount of deflection of the gimbal spring (6). The pressing force of the slider (5) against the flexible disk (16) is determined.

[Problem to be solved by the invention] The conventional one is configured as above.

Leaf spring (13) integrally molded on arm (I2)
If the subframe (14) is deformed or distorted, the stopper (14) attached to the free end of the subframe (14) is
14a) and the torsion spring (15), the position of the arm (12) in the direction perpendicular to the surface of the flexible disk (16) is different from the original intended position, and the arm (12) is held in a cantilevered state by the gimbal spring (15). 6) The amount of deflection becomes too large or too small. If the amount of deflection of the gimbal spring (6) is excessive, the pressing force of the second head slider (5) against the flexible disk (16) becomes large, impairing the life of the sliding surface of the flexible disk (16). Furthermore, if the amount of deflection of the gimbal spring (6) is too small, the pressing force of the second head slider (5) against the flexible disk (16) will become small, causing the first head slider (2) and the second head slider to (5) and the flexible disk (16) cannot be obtained, resulting in failures in writing and reading signals.

This invention was made to solve the above-mentioned problems, and even if the leaf spring integrally molded on the arm is deformed or distorted, the arm can be moved for its original purpose in the direction perpendicular to the surface of the flexible disk. The purpose is to hold it in the desired position.

[Means for Solving the Problems] In the case of the present invention, in addition to a stopper provided at the free end of the subframe, for example, a stopper provided at the free end of the subframe is used as a means for holding the arm at a predetermined position during recording and reproduction. The arm for regulating the distortion of the leaf spring and a series of its rotation support parts are attached to the side.

[Function] In the present invention, the position of the arm in the direction perpendicular to the flexible disk surface during recording and reproduction is determined by a stopper provided at the free end of the subframe, for example.

Since it is determined by the arm and its series of rotational supports, the arm can be reliably held in its intended position in the direction perpendicular to the flexible disk surface even if the leaf spring is deformed or strained. Can be done.

[Example] An example of the present invention will be described below. In other words, the same parts in Fig. 1 as in Fig. 3 will be given the same reference numerals and repeated explanation will be omitted, but (3) in the figure
, (3a) is an arm of the present invention which is rotatable about the leaf spring (13), and the attachment formed at the other end of the carriage (1) is attached to the surface (lla); The other end of the carriage (1) is attached to the tip of the arm (3a) and is attached to the arm (3) in series so as to be located on both sides of the carriage (13). The present invention is characterized by the provision of a rotating support portion (3b) that fits together. That is, the rotational movement of the arm (3) in the direction toward the first head slider (2) is controlled by the stopper (14) formed at the free end of the subframe (14).
The movement of the arm (3) during recording and reproduction is limited by two points: engagement with the arm (3a) and abutment of the rotation support part (3b) provided at the tip of the arm (3a). The feature is that the position can be determined.

By the way, FIG. 2 shows the arm open state, and the flexible disk is inserted and removed in this state in the same way as in the conventional case shown in FIG. 4, but in the case of the present invention, the arm (3 ) is supported at a predetermined position at two locations: the stopper (14a) and its rotation support portion (3b).

In the above embodiment, the attachment formed on the other end of the carriage (11) is attached to the surface (lla) and the arm portion (3a) of the arm (3).
The rotating support part (3b) provided at the tip of the
This rotation support part (3b) may be provided on the surface (lla) for mounting the carriage (11), or the rotation support part (3b) may be provided on the surface (lla) for mounting the carriage (11).
The surface that abuts 3b) may be, for example, the top surface of the subframe (14). Furthermore, although the stopper (14a) is formed at the free end of the subframe (14), the flexible disc (16) can be moved even without the subframe (14).
For example, it may be integrally formed with the carriage (11) at a position where it does not interfere with the carriage (11).

[Effects of the Invention] Since the head support device of the present invention is constructed as described above, the position of the arm (3) perpendicular to the surface of the flexible disk (16) during recording and reproduction is at the position of the stop bar (14a).
and the rotation support part (3b) of the arm, so even if the leaf spring (13) of the arm (3) is deformed or strained, the arm (3) can be moved to the flexible disk (16) surface. This has the effect that it can be reliably supported at the intended position in the direction perpendicular to the direction.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing an embodiment of the head support device of a double-sided flexible disk drive of the present invention in a recording/reproducing state, FIG. 2 is a side sectional view showing the arm opening state, and FIG. FIG. 4 is a side sectional view showing the arm in the open state, and FIG. 5 is a side sectional view showing the recording/reproducing state when the leaf spring of the arm is deformed in the conventional example. In the figure, (2) is the first head slider 1 (3) is the arm, (3b) is the rotation support part, (5) is the second head slider, (11) is the carriage, and (13) is the leaf spring. , (1
4a) is a stopper, and (16) is a flexible disk. In other figures, the same reference numerals indicate the same parts.

Claims (1)

[Claims] A carriage that has a first head slider and is movable relative to the flexible disk, a second head slider that is attached to the carriage via a leaf spring, and has a flexible disk between both head sliders so that it can be freely attached and detached. An arm whose end rotates, and a stopper provided on the carriage to restrict the rotation of this arm and lock it in a predetermined position in the recording/reproducing state, and on the opposite side of the stopper, there is a stopper provided on the carriage. A head support device for a double-sided flexible disk device, characterized in that the above-mentioned arm for regulating the rotation of the arm and a series of rotation support parts thereof are attached.