JPS5814355A - Magnetic head attaching device - Google Patents

Abstract

PURPOSE:To control the running position of a tape for a head with a high precision, by inserting and attaching the magnetic head to a notch part of a tape controlling member. CONSTITUTION:A magnetic head body 11 is inserted to a controlling member 8, where a tape controlling part 9 is projected, from the rear so that a head gap 12 is projected from a notch window 10. A tape 5 is run while keeping the lower end brought into contact with the upper face of the controlling part 9 and while being brought into contact with the upper face of the controlling part 9 and while being brought into contact with the head gap 12 projected from the notch window 10. The position of the head gap 12 is adjusted independently of the controlling part 9, and positions of the head gap 12 and the track on the tape are adjusted with a high precision.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic head mounting device, and an object of the present invention is to highly accurately regulate the running position of a magnetic tape relative to a magnetic head in, for example, a fixed head type magnetic recording/reproducing device.

In recent years, heads that are capable of high-density recording and reproduction with narrow track widths are being developed. In these heads, the track width, track pitch, etc. are on the order of several tens of microns, and in order to perform high-quality recording and playback, the running position of the magnetic tape on the surface of the fixed head must be adjusted in the tape width direction. It is necessary to limit the vibration to several tens of microns or less, including vibration (hereinafter referred to as waving).

FIG. 1 shows a conventional head block for a tape deck. In the figure, 1 is a head, 2I/i magnetic tape,
3 is a tape regulating post having a pair of regulating parts in the axial direction.

Conventionally, in a head block, the position of the tape 2 in the width direction with respect to the head 1 is regulated by several tape regulating posts 3 provided at the front and rear of the head with respect to the running of the tape. However, the interval between the regulating parts of the regulating post 3 is
It is slightly larger than the tape width, and the regulating part and tape 2
There will be a gap between them. Therefore, when the tape 2 runs, waving occurs within the gap, causing a shift in its position relative to the head 1. Also, reel or 37
・−7・ While the tape fed out passes through several regulation posts,
Transverse vibration occurs between the posts, with the posts serving as nodes, and greater waving occurs between the posts than on the posts. Also, due to the influence of head and post inclination, etc.
There is also a difference in the absolute height of the tape running on the post and on the head. Therefore, in order to regulate the position of the tape on the head with high precision, the height and spacing of the tape regulating section relative to the head (including the height and spacing) must be made highly accurate, and the tape regulating section must be located as close to the head gap as possible.

On the other hand, conventionally, as shown in FIG. 2, a tape regulating body 6. There is a device in which the tape 60 is moved on the surface of the head by regulating the running position of the tape 60 on the head surface. In this structure, since the tape 5 is regulated near the head 4, it is expected that waving due to lateral vibration of the tape will be regulated more precisely than the regulation shown in FIG. However, the mounting positions of the tape regulators 6 and 7 depend on mechanical assembly precision, and it is absolutely impossible to achieve a relative positional precision of about 10 μ between the head gap and the track on the tape.

Furthermore, in the configuration shown in FIG. 2, the tape regulating body 6t7 may be moved up and down with a screw to finely adjust the relative position between the head gap and the track on the tape. In this configuration, the relative position between the head gap and the track (tape) can be adjusted, so accuracy can be improved by looking at only these two. However, there are considerable variations in the dimensional accuracy of the head body 4, that is, there may be variations in the absolute height of the head gap from the board, and the absolute height of the tape regulators 6 and 7 from this board also varies. Since there are variations, the absolute height of the tape running at the tape regulating bodies 6 and 7 is different from that of other guide posts, etc., which has a disadvantage in that it adversely affects the running of the tape.

The present invention solves the above-mentioned conventional drawbacks, and includes a regulating member having a notch for protruding the head gap and a tape regulating section, and a magnetic head that is attached by being inserted into the notch of the regulating member. It is characterized by having the following. Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 3 is an exploded perspective view showing an embodiment of the magnetic head mounting device of the present invention, and FIG. 4 is a top view thereof.

Reference numeral 8 designates a regulating member, and a tape regulating portion 9 is provided protruding from the lower part of the front surface, and a cutout window 1o is formed on the front surface from which a helad gap of a magnetic head body, which will be described later, can protrude. 11
1 is a magnetic head body, which includes a magnetic head 13 having a head gap 12 at its tip, and a magnetic head 13 which is held suspended so as to be able to move up and down once and is fixed to a head block (not shown) below. It consists of a head support part 14.

The magnetic head body 11 is inserted from behind the regulating member 8 so that its head gap 12 protrudes from the cutout window 1o. The regulating member 8 and the magnetic head body 11 are each screwed to the lower head block. Here, the head support part 14 is fixed, but the position of the magnetic head 13 suspended thereon is adjustable, and the head gap 12 can be adjusted by moving up and down nine times while protruding from the notch window 1o. It has become.

6 /(-,・ According to the above configuration, the tape 5 runs while its lower end is in contact with the upper surface of the tape regulating portion 9 at the lower front of the regulating member 8, so that position regulation is performed very accurately. In other words, in this structure, the absolute height of the running position is regulated in the same way as the precision of other tape running and guiding members, independent of the magnetic head section, so running accuracy is not deteriorated.Further, the tape 6 The head gap 12 runs in contact with the head gap 12 protruding from the cutout window 10, and the position of the head gap 12 can be adjusted independently of the tape regulating part 9 as described above. The position with respect to the track can be adjusted with high precision.Furthermore, since the tape regulating section 9 is located near the head gap 12, especially directly below it, it is possible to extremely reduce tape waving at the head gap. became.

Note that since the magnetic head 13 is covered with the regulating member 8 on both its front surface, upper and lower sides, a conventional head case can be dispensed with, and lead wires can be easily disposed of.

Furthermore, when replacing the head, it is sufficient to replace only the magnetic head 7/, -- 13, and alignment of the new magnetic head can be easily performed.

Next, another embodiment of the present invention will be described. FIG. 6 is a top view, FIG. 6 is a front view, and FIG. 7 is a side view.

Reference numeral 16 denotes a regulating member, and a tape regulating portion 16 is protruded from the lower part of the front surface, and a cutout window 17 is formed on the front surface of the tape regulating portion 16 .

18 is a magnetic head body, which includes a head support section 19, an azimuth moving section 20. It is composed of a head support flexible section 21 and a magnetic head 22.

The azimuth moving part 2o is held in a suspended manner connected to the head support part 19 only near the center 1, and the top surface is pushed by the tip of an azimuth adjustment screw 23 provided through the head support part 19. ing.

Therefore, by changing the amount by which the azimuth adjustment screw 23 is screwed in, the shear shift portion 2o is tilted, and the azimuth angle of the head gap 24 can be changed.

Further, the head supporting flexible portion 21 is connected to the azimuth moving portion 2o only at both ends, so that the tip of a vertically moving screw 26 passing through the head supporting portion 19 and the azimuth moving portion 2o reaches thereto. Therefore, by changing the screwing amount of the vertically movable screw 25, the magnetic head 22, that is, the head gap 24
can be moved up and down (arrow B).

The azimuth adjustment and vertical position adjustment described above utilize the deformation of metal, so they have excellent characteristics in that they can be finely adjusted and can be adjusted independently.

Further, 26 is a swing center hole, the center of which is located directly above the helad gap 24. This hole 26
engages with a pin (not shown) of the head block to which the regulating member 16 and the magnetic head body 18 are respectively attached, and the head support portion 19 of the magnetic head body 18 is moved around this pin.
rotates, and the amount of swing C of the magnetic head can be adjusted.

Note that in this configuration, since the center of oscillation coincides with the head gap 24, the position of the head gap itself remains unchanged, and only the direction (oscillation) is changed91. − I can do it.

In this embodiment as well, the absolute height of the tape regulating section 16 can be set accurately in accordance with other posts, etc., and the tape runs in contact with the upper surface of this, thereby increasing the accuracy of the tape running position. be able to. Furthermore, since the tape regulating portion 16 is located below the spacing gap 24, the waving of the tape is also extremely small.

Furthermore, in this embodiment, as described above, azimuth adjustment and vertical position adjustment can be performed with high precision.

As is clear from the above embodiments, the present invention includes a regulating member having a tape regulating section regulating the position of the tape, and a magnetic head separately provided to be rotatable and vertically movable. By locating the head gap of the magnetic head near the tape regulating section, the tape running position can be precisely regulated together with other guide members, and the head gap and tape can be adjusted without using the conventional head case. The regulation part can be brought closer to the 1o when driving.
It is now possible to create slight waving.

Furthermore, since the magnetic head can be positioned independently, it is possible to adjust the relative position between the tape track and the head gap with high precision, making it especially suitable for devices that require highly precise tracking. It is possible to maintain sufficient reliability even in the case of

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of conventional tape position regulation, FIG. 2 is a perspective view of a conventional magnetic head mounting device, and FIG. 3 is an exploded perspective view showing an embodiment of the magnetic head mounting device of the present invention. 4 is a top view thereof, FIG. 6 is a top view of another embodiment of the present invention, FIG. 6 is a front view thereof, and FIG. 7 is a side view thereof. 8... Regulating member, 9... Tape regulating portion, 10... Notch window, 11... Magnetic head body, 12... Head Gap, 13...
...Magnetic head, 14...Head support section.

Claims (1)

[Claims] A magnetic head structure including a magnetic head provided with a magnetic gap portion on the front surface, a head support portion that suspends and holds the magnetic head so as to be vertically movable and rotatable, and a notch portion on the front surface into which the magnetic gap portion is inserted. , a regulating member having a tape position regulating portion provided near the notch, and the magnetic gap portion of the magnetic head is inserted into the notch of the regulating member to protrude, and the head supporting portion and the regulating member are disposed in the vicinity of the notch. A magnetic head mounting device characterized in that each member is independently fixed.