JPS6265Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the mounting of a complete magnetic head in a recording medium exchange type magnetic disk device, a magnetic disk cartridge device, and the like.

Recording medium exchange type magnetic disk devices, magnetic disk cartridge devices, etc. are usually set so that information can be written/read from all of the respective recording media. Therefore, it is essential to have compatibility with each other from the viewpoint of flexibility, expandability, and reliability of information recording and reproduction.

For this purpose, as shown in Fig.
It is necessary to track each of the plurality of completed magnetic heads 2 attached to the recording medium 3 in the radial direction of the recording medium 3, and generally the recording medium 3 has tracking information recorded on each surface on the same radius. Using a standard medium, while observing the information read out by the core gap of the magnetic head 4 mounted on each completed magnetic head 2, use a tracking tool etc. to track the magnetic head until the information becomes the tracking information. Tracking of completed body 2 is underway. That is, the core gap position of the magnetic head 4 of each completed magnetic head assembly 2 is tracked to be on a straight line A with respect to the radial direction of the medium 3, thereby ensuring compatibility between devices.

Note that during tracking, the carriage 1 needs to be fixed at a certain position with respect to the center B of the recording medium 3. Usually, a method is used in which the head is mechanically fixed at a certain set position, or servo information recorded on one side of a standard medium is used, while a complete magnetic head 2 for reading that information is fixed on the carriage 1. , while constantly electrically observing the track servo information set from the beginning.
This is a method of electrically controlling so that it is fixed at a fixed position. Note that 5 is a roller that moves on a rail (not shown).

When the magnetic heads 2 are mounted on the carriage 1, it is absolutely necessary to track each of the magnetic heads 2. In this case, the following damage will occur.

(1) Special equipment such as standard media, tracking tools, and other measuring instruments are required.

(2) Only one completed magnetic head 2 can be tracked.

(3) The completed magnetic head 2 is attached to the carriage 1 using screws (not shown), which are slightly loosened during tracking and tightened firmly when tracking is completed. At this time, the completed magnetic head 2 moves slightly and requires re-tracking.

(4) After rotation of the standard medium, if you do not wait until the temperature of the standard medium becomes constant before tracking it, the position will shift and you will need to track it again.

(5) Since tracking time is required, when replacing a magnetic disk device, it takes too much time to recover the device.

The purpose of the present invention is to enable magnetic head groups to be replaced in a short time with one touch without using the above-mentioned special equipment.

The feature of the present invention is that the complete magnetic head is positioned with respect to the studs of the head mounting plate, and the head mounting plate is positioned with respect to the carriage that has a bush for positioning the head mounting plate holding the pin. This is a mechanism for positioning and mounting.

The present invention will be explained below using drawings.
2 and 3 show a plan view and a side view of an embodiment of the magnetic head group mounting mechanism according to the present invention.

In the figure, 2 is a completed magnetic head, 5 is a roller, 6 is a head mounting plate, 7 is a stud, 8 is a core gap of the magnetic head, 9 is a screw, 10 is a pin,
11 is a push spring, 12 is a bush, 13 is a tapered portion, 14 is a hole, and 15 is a carriage.

The head mounting plate 6 is provided with a screw hole for mounting the completed magnetic head 2, and a height-adjustable head 3 is provided on a surface bent at right angles to the magnetic head mounting surface.
It is further bent into a C-shape so that a carriage 15 can slide on the side opposite to the magnetic head mounting surface. As shown in FIG. 2B, three push springs 11 are attached to the inclined surface of the bent portion to which pins 10 having spherical tips are fixed.

On the other hand, the carriage 15 is provided with three bushes 12 corresponding to the three studs 7 provided on the head mounting plate 6, and the tapered portion 13 on the back is provided with pins 10 provided on the head mounting plate 6. A corresponding spherical hole 14 is provided.

The head mounting plate 6 is attached to a reference cart having the same structure as the carriage 15, and the magnetic head completed body 2 is installed.
Temporarily fix it to the head mounting plate 6 with screws 9, and while reading the information written on the reference medium,
Finally, tighten screw 9. In this state, the position of the core gap 8 is exposed, and a large number of them are made in advance.

In addition, the heights of the three studs 7 provided on the head mounting plate 6 were adjusted so that the flat surface formed by the tips thereof was exposed, and the head mounting plate 6 was thereby mounted on the carriage 15. At this time, the core gap of the magnetic head should be exposed at the 8th position.

Next, when mounting the head mounting plate 6 with the completed magnetic head 2 attached to the carriage 15, the head mounting plate 6 is inserted from above the carriage 15, but the studs 7 provided on the head mounting plate 6
At the same time as it contacts the bush 12 of the carriage 15, the sunken pin 10 on the head mounting plate 6
is inserted into a protruding hole 14 provided in the carriage 15.

Also, the planes formed on the three studs 7 are adjusted to be parallel to the core gap 8 of the magnetic head, and the plane formed at the tip of the bush 12 of the carriage 15 is also parallel to the plane formed at the tip of the studs 7. It is in. Therefore, when the head mounting plate 6 is mounted, the two groups of completed magnetic heads are mounted on the head mounting plate 6 and the position of the core gap 8 is kept constant.
The position in the X, Y, and Z directions is set by fitting the pin 10 with the push spring 11 of the head mounting plate 6 into the two tapered surfaces of the carriage 15 and into the plurality of holes 14 provided in the tapered surface. be done.
Therefore, no adjustment is required after installation.

When inserting the head mounting plate 6, the pin 10 is depressed and pushed in, and the head mounting plate 6 is fitted into the hole 14 of the carriage 15 and fixed to the carriage 15. If the fixation is to be made stronger, the carriage 15 and the head mounting plate 6 may be fixed with screws.

The present invention has been explained above with reference to the embodiments. According to the present invention, the complete magnetic head is positioned in advance with respect to the stud of the head mounting plate, and a carriage having a bush for positioning the head mounting plate is used. Since the position is determined by inserting the head mounting plate into the magnetic head, there is no need for special equipment such as standard media or tracking tools for tracking the magnetic head, thus shortening and simplifying the work time. Is possible.

[Brief explanation of the drawing]

Fig. 1 is a diagram for explaining a conventional magnetic head group mounting mechanism, Fig. 2 is a diagram showing an embodiment of the magnetic head group mounting mechanism according to the present invention, A... Plan view, B... Enlarged protrusion. Figure 3 is a side view taken along line A-A' in Figure 2. In the figure, 1 and 15 are carriages, 2 is a completed magnetic head, 3 is a recording medium, 4 is a magnetic head, 5 is a roller, 6 is a head mounting plate, 7 is a stud, 8 is a core gap, 9 is a screw, and 10 is a pin. , 11 is a presser spring, 12 is a bush, 13 is a tapered portion, and 14 is a hole.

Claims (1)

[Claims for Utility Model Registration] A plurality of completed magnetic heads 2 are mounted on a carriage 1.
A magnetic head group mounting mechanism for mounting on a magnetic head 15 is provided with a mounting surface to which a completed magnetic head 2 is mounted, and is formed by the mounting surface and a guide surface shaped to hold a carriage 15. a stud 7 provided on the mounting plate 6, penetrating through the mounting surface, protruding in the direction of the carriage 15, and pressing against the carriage 15; and attach the mounting plate 6 to the carriage 1.
5. A magnetic head group mounting mechanism characterized in that a means 10 for positioning and fixing the magnetic head group at the magnetic head group 5 is provided.