JPH0710828U - Rotary magnetic head with multiple tape guides - Google Patents

Abstract

(57) [Summary] [Purpose] Providing a plurality of tape guides, each of which is provided with a tape guide integrally formed with a head holder, on both sides of the magnetic head on the tape entrance / exit side and on one side position apart from the side of the magnetic head. To get a rotating magnetic head. A rotary magnetic head configured to integrally form a head holder 3 for holding a magnetic head 1 on a mounting holder 2 and to mount the mounting holder 2 on a rotary drive unit 5 via a rotary holder 4 A tape guide integrally formed with the head holder 3 is provided at both sides of the head 1 on the tape entrance / exit side and at one side position apart from the side surface of the magnetic head.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary magnetic head having a plurality of tape guides used in an audio tape recorder.

[0002]

[Prior art]

 Generally, a tape recorder of this type records a signal on a magnetic tape and / or a recording / rehead for reproducing the recorded signal, or a recording / rehead and an erasing head for erasing the recorded signal. Magnetic heads such as combination heads are used, and in particular, a reversible auto-reverse type audio tape recorder uses a rotating magnetic head capable of reversing the magnetic head by 180 degrees.

That is, in the conventional rotary magnetic head, for example, as shown in FIG. 3, the magnetic head 11 is attached to a rotary holder 12, and the rotary holder 12 includes a drive gear driven by a stepping motor or the like. It is designed to be attached to a drive unit (not shown). At this time, the ears 12a protruding from the left and right of the rotary holder 12 are assembled to the rotary drive through the azimuth adjusting screws 13, and the track width of the running magnetic tape and the head gap of the magnetic head 11 are separated. It is designed to fine-tune the azimuth error.

As shown in FIG. 4, the magnetic head 21 is incorporated in a head holder 23 integrally formed on the front surface of the mounting holder 22 in another conventional rotary magnetic head. A tape guide 23a is formed by extending both side surfaces of the head holder 23 on both sides of the magnetic tape on the entrance / exit side of the magnetic tape, and cutting the front end surface of the head holder 23 into the tape width. Then, the upper and lower parts of the mounting holder 22 are fixed to the rotary holder 24 with screws 25. Further, the ears 24a protruding from the left and right of the rotary holder 24 are assembled to a rotary drive unit (not shown) by an azimuth adjusting screw 26, and an azimuth error between the track width of the running magnetic tape and the head gap of the magnetic head 21 is detected. Is finely adjusted.

[0005]

[Problems to be solved by the device]

 However, the rotary magnetic head with the above-mentioned conventional structure has a very small adjustment amount by the azimuth adjusting screw. Especially, in the magnetic head not equipped with the tape guide, the azimuth adjustment may be performed depending on the mounting error between the magnetic head and the rotary holder. May exceed the range of adjustment allowance, and even after adjustment, shake may occur while the tape is running, making it impossible to adjust the azimuth between the head gap and the tape track width. there were. Even if tape guides are provided only on the tape inlet / outlet side on both sides of the magnetic head, the tape guide will twist the tape end surface and deform it into a wavy shape, causing tape damage due to runout and mounting errors during tape running. In addition, the contact with the sliding surface of the head becomes unstable and the recording / reproducing and erasing characteristics deteriorate, which causes noise.

An object of the present invention is to solve the above-mentioned problems of the conventional structure. A head holder is provided on each side of the magnetic head on both sides of the tape inlet / outlet and one side position apart from the side of the magnetic head. An object is to obtain a rotary magnetic head having a plurality of tape guides provided with integrally formed tape guides.

[0007]

[Means for Solving the Problems]

 In order to achieve such an object, a rotary magnetic head having a plurality of tape guides according to the present invention integrally forms a head holder for holding the magnetic head in a mounting holder, and the mounting holder is mounted on the rotary holder. In the rotary magnetic head configured to be attached to the rotary drive via the tape guides integrally molded with the head holder, are provided at the tape inlet / outlet side on the side of the magnetic head and at one side position apart from the side of the magnetic head. It is characterized by

[0008]

Therefore, in the rotary magnetic head having a plurality of tape guides according to the present invention, the tapes integrally formed with the head holder are respectively formed at the tape entrance and exit sides on both sides of the magnetic head and at one side position apart from the side surface of the magnetic head. Since the structure is provided with a guide, if the mounting holder with the magnetic head is mounted on the rotary holder and this rotary holder is mounted on the rotary drive of the device body, the track width at the entrance side of the running magnetic tape will be Since it is guided by multiple tape guides, the vibration during running of the magnetic tape and the twisting of the end surface are eliminated, the tape damage is reduced, and the azimuth error between the magnetic head head gap and the magnetic tape track width is reduced. It becomes less, and fine adjustment becomes easy with the azimuth adjustment screw that attaches the rotation holder to the rotation drive unit. .

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view showing the structure of a rotary magnetic head according to the present invention, and FIG. 2 is a top view showing the rotary magnetic head of FIG. In the figure, 1 is a magnetic head, 2 is a mounting holder, 3 is a head holder integrally molded with the mounting holder 2, 4 is a rotary holder, and 5 is selected according to equipment such as an audio tape recorder to be used. The head has a rotary drive unit, and 6 is an azimuth adjusting screw for finely adjusting the azimuth after the rotary holder 4 is assembled to the rotary drive unit 5.

The recording / reproducing magnetic head 1 is assembled to the head holder 3. The mounting holder 2 formed integrally with the head holder 3 is assembled to the rotary holder 4, and the rotary holder 4 is mounted on the drive unit 5 having the drive gear 5a driven by a stepping motor or the like. It is assembled with azimuth adjusting screw 6 so that it can be flipped 180 degrees.

Further, the tape inlet / outlet sides of both side surfaces of the magnetic head 1 are held by tape guides 7 and 8 integrally extending forward from the head holder 3, and front end surfaces of the tape guides 7 and 8 are held. The concave notches 7a and 8a for guiding the vertical width of the magnetic tape 20 are formed in the. The concave notches 7a and 8a of the tape guides 7 and 8 guide the running magnetic tape 20 so that the track width of the running magnetic tape 20 matches the head gap of the magnetic head 1.

A tape guide 9 is provided at a predetermined position on one side away from the side surface of the magnetic head 1 through an arm integrally extended from the head holder 3. The tape guide 9 is provided with a concave cutout 9a for guiding the vertical width of the magnetic tape running from the tape entrance side of the magnetic head 1. The concave cutout 9a of the magnetic head 1 is formed by the concave cutout 9a. It is designed to adjust the azimuth error between the head gap and the track width of the running tape.

In the embodiment of the present invention, the case where the magnetic head 1 is the recording / reproducing head has been described, but the present invention is not limited to this, and the combination head combined with the erasing head is used. Can also be applied to. Further, the tape guide 9 provided at one side position apart from the side surface of the magnetic head 1 is preferably provided on the tape entrance side of the magnetic head, and among the tape guides 7 and 8 provided on both side surfaces of the magnetic head 1. Improve the running balance of the magnetic tape by setting the central tape guide 7 facing the tape guide 9 side provided away from the side surface of the magnetic head 1 so as to be located in the central part of the magnetic head 1. be able to.

As described above, according to the embodiment of the present invention, the head holder 2 is integrally formed at the tape inlet / outlet side of both sides of the magnetic head 1 and at one side position apart from the side surface of the magnetic head 1. A tape guide is provided, the head holder 2 is attached to the rotary holder 4, and the rotary holder 4 is assembled to the rotary drive unit 5 via the azimuth adjusting screw 6 to form a rotary magnetic head. The track width of the magnetic tape 20 running from the side is guided by a plurality of tape guides to eliminate runout and twisting of the end face of the magnetic tape 20 during running, reduce tape damage, and reduce the head gap of the magnetic head 1. Then, fine adjustment of the azimuth error with the track width of the magnetic tape 20 becomes easy.

[0016]

[Effect of device]

 As described above in detail, the rotary magnetic head with a plurality of tape guides according to the present invention has a head holder on each side of the magnetic head on the tape entrance / exit side and on one side apart from the side of the magnetic head. Since the structure is provided with an integrally molded tape guide, when the rotary holder with the magnetic head attached is attached to the rotary drive of the device body, the track width of the running magnetic tape can be estimated by the multiple tape guides. As a result, runout of the magnetic tape and twisting of the end surface are eliminated, tape damage is reduced, and azimuth error between the head gap of the magnetic head and the track width of the magnetic tape is reduced. Therefore, even if the adjustment allowance by the azimuth adjustment screw that attaches the rotary holder to the rotary drive is extremely small, fine adjustment is easy, and the contact between the tape sliding surface of the magnetic head and the magnetic tape is stable. However, the recording / reproducing and erasing characteristics are improved. Further, according to the present invention, since the tape guides are provided only on both side surfaces of the magnetic head and one side position apart from the side surface of the magnetic head, the space required for the rotation of the magnetic head is reduced, and the device body is made smaller and thinner. Can be converted.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing the structure of a rotary magnetic head according to the present invention.

2 is a top view showing the rotary magnetic head of FIG. 1. FIG.

FIG. 3 is a perspective view showing a structure of a conventional rotary head.

FIG. 4 is a perspective view showing the structure of a conventional rotary head.

[Explanation of symbols]

 1 Magnetic head 2 Mounting holder 3 Head holder 4 Rotating holder 6 Azimuth adjustment screw 7, 8, 9 Tape guide

Claims (1)

[Scope of utility model registration request] 1. A rotary magnetic head in which a head holder for holding a magnetic head is integrally formed with a mounting holder, and the mounting holder is assembled to a rotary drive unit via a rotary holder. A magnetic head having a plurality of tape guides, each of which is provided with a tape guide integrally formed with a head holder at a tape entrance / exit side of the magnetic head and a side position separated from a side surface of the magnetic head.