JPH0142871Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to an improvement in the mounting mechanism of the magnetic head in a floppy disk recording/reproducing device, and is capable of centering the magnetic head with respect to the floppy disk and adjusting the azimuth. The present invention provides a mounting mechanism for magnetic heads that can be adjusted independently.

(Prior Art) Conventionally, in order to attach a magnetic head to a magnetic head mounting arm in a floppy disk recording/reproducing device, it has been common to use a jig and fix the magnetic head to the magnetic head mounting arm with an adhesive or the like.

Therefore, as shown in FIG. 1, when the mounting position of the magnetic head 2 on the magnetic head mounting arm deviates from the center line a of the floppy disk 1 to position b, the tracks on the floppy disk 1 The angle θ between track A and track B is different.
This is because the mounting position and azimuth of the magnetic head deviate from predetermined positions due to the accumulation of dimensional errors and assembly errors of each component, making it impossible to obtain sufficient performance. Conventionally, the above-mentioned problems have been solved by using component parts with a high level of dimensional accuracy, but this has the disadvantage of significantly increasing costs.

(Purpose of the invention) This invention is to move the magnetic head in a direction perpendicular to the axial direction of the magnetic head mounting arm by adjusting the first adjustment screw after the magnetic head is mounted on the magnetic head mounting arm. By making it possible to align the mounting position of the magnetic head with the center line of the floppy disk, the magnetic head can be horizontally rotated by adjustment using the second adjustment screw. By making it possible to
The purpose is to enable azimuth adjustment.

(Structure of the invention) This invention has a magnetic head mounting arm that attaches a magnetic head so as to be in contact with the recording/reproducing surface of a floppy disk rotated by a rotary drive device and move relatively in the radial direction. A base is provided so that it can be moved in a direction substantially perpendicular to the axial direction of the magnetic head mounting arm by adjustment using the first adjustment screw, and a magnetic head is attached to this base so that it can be horizontally rotated by adjustment using the second adjustment screw. The present invention provides a mounting mechanism for a magnetic head in a floppy disk recording/reproducing apparatus, which includes a holder and a magnetic head mounted on the magnetic head holder.

(Example) Fig. 2 is a plan view showing an embodiment of the magnetic head mounting mechanism in the floppy disk recording/reproducing device of this invention, Fig. 3 is a side view, and Fig. 4 is a detailed view of the magnetic head mounting mechanism. 5 is a plan view taken in the - line direction in FIG. 5, and FIG. 5 is a side view taken in the - line direction in FIG.
is a magnetic head mounting arm (hereinafter simply referred to as arm), which is mounted by a sliding mechanism (not shown) on the recording/reproducing surface of the floppy disk 1 which is rotated by a rotary drive device (not shown). A magnetic head attached as described below comes into contact with it and is slidable in the direction of arrow A so as to move in the radial direction.

Reference numeral 4 denotes a magnetic head attachment mechanism provided at the tip of the arm 3, and is constructed as follows. That is, 5 is a base provided at the tip of the arm 3 so as to be movable in a direction substantially perpendicular to the axial direction thereof. The inner wall of the fitting portion 3a is pressed with an appropriate force. In order to slide the base 5 in a direction perpendicular to the axial direction of the arm 3, that is, in the direction of arrow B, a first adjustment screw 6 is rotatably fitted to one side of the arm 3. A screw thread 6a of the adjustment screw 6 is screwed into a screw hole 5b of the base 5, and by rotating this first adjustment screw 6 with a screwdriver or the like, the base 5 is set at right angles to the axial direction of the arm 3. It is now possible to move it in any direction.

A circular recess 7 having a chord part 7a in a part is formed on the upper surface of the base 5, and a disk-shaped magnetic head holder 8 has a chord part 8a in a part in the circular recess 7.
are fitted so as to be horizontally rotatable. An appropriate clearance c is provided between the string portion 8a of the magnetic head holder 8 and the string portion 7a of the circular recess 7, allowing the magnetic head holder 8 to horizontally rotate within a predetermined range, that is, rotate in the direction of arrow C. It is designed so that In order to horizontally rotate the magnetic head holder 8, a worm gear-shaped thread 8b is formed on a part of its circumferential surface, and a worm-shaped second adjusting screw 9 is provided to mesh with this thread. This second adjustment screw 9 is
The magnetic head holder 8 can be horizontally rotated by rotating it with a screwdriver or the like inserted into a cylindrical hole 10 formed through the base 5 from the side of the arm 3.

Magnetic head holder 8 provided as above
A magnetic head 2 is attached to the top surface of the head.

Reference numeral 11 designates a pad arm that is rotatably provided on the arm 3, and a pad 12 is fixed to the tip of the arm 11 with an adhesive or the like at a position facing the magnetic head 2.

(Effect of the invention) Since this invention is constructed as described above, ideally the floppy disk should be placed on the centerline a of the floppy disk from the beginning, along with the axial centerline of the arm 3 and the center of the magnetic head 2 attached to it. It is desirable that line b be located at the same position, but if it is misaligned as shown in Figure 1, use an adjustment floppy disk to make sure that the outputs of track A and track B are at the same level. First, by rotating the first adjusting screw 6 with a screwdriver or the like, the base 5 can be slid in a direction perpendicular to the axial direction of the arm 3, that is, in the direction of arrow B shown in FIG. , the center position of the magnetic head 2 can be adjusted to match the center line a of the floppy disk 1.

Next, by inserting a screwdriver or the like into the cylindrical hole 10 formed in the base 5 and rotating the second adjustment screw 9, the magnetic head holder 8, which is provided on the base 5 so as to be horizontally rotatable, can be rotated horizontally. Since the magnetic head holder 8 can be moved, the azimuth of the magnetic head 2 attached to the magnetic head holder 8 can be adjusted to the best condition. During this azimuth adjustment, the magnetic head holder 8 rotates around the magnetic head 2, so that its center line with the floppy disk 1 does not deviate.

Furthermore, since each of the adjustments described above can be made after the magnetic head mounting mechanism is assembled, it is possible to absorb dimensional errors or assembly errors of each component.In other words, the dimensional accuracy of each component can be improved. There is no need to use highly finished products,
The present invention has the advantage of providing a magnetic head mounting mechanism in a floppy disk recording/reproducing device that is inexpensive and of high quality.

It is clear that this invention can also be applied to a mounting mechanism for a gimbal type or double-sided type magnetic head.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the relationship between a floppy disk and a magnetic head, Fig. 2 is a plan view showing an embodiment of the mounting mechanism for the magnetic head in the floppy disk recording/reproducing device of this invention, and Fig. 3 is a side view. , 4th
Figure 5 shows the mounting mechanism of the magnetic head in detail.
A plan view taken in the - line direction in the figure, No. 5
The figure is a side view taken along the - line direction in FIG. 4. DESCRIPTION OF SYMBOLS 1...Floppy disk, 2...Magnetic head, 3...Magnetic head mounting arm, 3a...Base fitting part, 4...Magnetic head mounting mechanism, 5...
...Base, 5a...Thin wall part, 5b...Screw hole, 6
...First adjustment screw, 6a...Screw thread, 7
...Circular recess, 7a...String section, 8...Magnetic head holder, 8a...String section, 8b...Thread thread, 9...
...Second adjustment screw, 10...Cylindrical hole, 11
...Putt arm, 12...Puttud.

Claims (1)

[Scope of utility model registration request] A magnetic head mounting arm, on which the magnetic head is mounted so as to be in contact with the recording/reproducing surface of a floppy disk rotated by a rotary drive device and move relatively in the radial direction, is adjusted by a first adjusting screw. A base is provided so as to be movable in a direction substantially perpendicular to the axial direction of the magnetic head mounting arm, and a magnetic head holder is provided on this base so as to be horizontally rotatable by adjustment using a second adjustment screw. A magnetic head mounting mechanism in a floppy disk recording and reproducing device equipped with a magnetic head.