KR920005443Y1 - Head machinery for cassette tape recording - Google Patents

Abstract

No content.

Description

Head Peripherals for Cassette Tape Recorders

1 is a perspective view of a peripheral mechanism for a cassette type tape recorder.

FIG. 2 is a plan view showing the head orientation adjustment mechanism of the head peripheral mechanism of FIG.

3 is a partially cutaway plan view of a magnetic head in contact with a tape in a tape cassette.

4 is a side view of the inner tape guide.

5 is a view showing a height relationship between a restricting surface of an inner tape guide and an outer tape guide.

6 is a second diagram and in-phase diagram showing a second embodiment of the present invention.

7 is a second diagram and in-phase diagram showing a third embodiment of the present invention.

8 is a perspective view of a head peripheral mechanism for a cassette type tape recorder showing a fourth embodiment of the present invention.

9 is a partially cutaway front view showing the head orientation adjustment mechanism of the head peripheral mechanism of FIG. 8 of the present invention;

* Explanation of symbols for main parts of the drawings

1: Head mounting plate 2, 2a, 2b, 2c: Head orientation adjustment mechanism

3, 3a: magnetic head 10: inner tape guide

10a, 10b: tape width movement control protrusion 10 ₁ : control surface

11: outer tape guide

11a, 11b: tape width direction movement restriction protrusion

11 ₁ : regulation surface 13: tape cassette

14a: rust ash head inlet 15: slope

16: tape 16a: tape lower edge

The present invention provides an inclined surface in contact with the tape edge in one direction of the tape width direction movement restricting protrusions on the upper and lower sides of the inner tape guide, and at the same time the height of the movement restricting protrusion of the other movement restricting protrusion and the outer tape guide coincides. A head peripheral mechanism for a type tape recorder.

The tape guide of the tape recorder is generally formed to regulate the tape width direction movement by positioning the tape between the top and bottom tape width direction regulating protrusions, but the gap between the top and bottom tape width direction movement regulating protrusions is the same as the tape width. It is not possible to do this (because the width varies by about 0.05mm depending on the tape, even the tape of the maximum width must be suitable).

Such a tape can be moved in the longitudinal direction of the longitudinal direction between the vertical tape width direction movement restricting protrusions.

Since this movement amount is 0.05 mm or less, it is acceptable in normal use.

However, if you want to obtain a sound effect of higher precision, this kind of movement can not be ignored.

As a countermeasure against this, the following tape guides have been recently developed.

In other words, by making an inclined surface downward on the tape widthwise movement restricting protrusion and contacting the lower edge of the tape with the inclined surface, the tape upper edge is always in contact with the restricting surface of the upward tape widthwise movement restricting protrusion and the tape widthwise movement is performed. To regulate it.

However, in the case of the cassette type tape recorder, guide posts for guiding the tape are made at both positions of the rust ash head inlet in the tape cassette, and the guide post is positioned between the magnetic head and the tape guide.

Even if the tape width direction movement was regulated with high precision by such a tape guide, there existed a problem that the high precision regulation effect was not fully exhibited in a magnetic head position.

As a solution to this problem again in that state, the tape guide made of a metal sheet, which has a slanted surface, is directly attached to both sides of the magnetic head, and the tape guide is rusted head of the tape cassette like the magnetic head. Introduction from the inlet is also carried out.

However, only by attaching the tape guide attached to the inclined surface to the side of the magnetic head, since the tape width position is regulated locally only at the position close to the magnetic head, the burden is placed on the tape at the tape guide position. There was a fear that the tape deformed and the positional accuracy of the magnetic head would not be high. In addition, the tape may be damaged quickly.

It is an object of the present invention to provide a cassette peripheral tape recorder head peripheral mechanism that can set the positional relationship between the magnetic head and the tape with a very high precision and does not burden the tape.

The present invention for achieving the above object, while mounting the magnetic head to the head mounting plate through the head azimuth adjustment mechanism, the inner tape guide close to most of the magnetic head and the outer tape away from the magnetic head at both positions of the magnetic head In the head peripheral mechanism for a cassette-type tape recorder each made of a guide, each of the pair of tape guides is fixed to the head mounting plate, and the pair of inner tape guides are connected to the magnetic head through the rust head inlet of the tape cassette. And a tapered surface which can be introduced into the tape cassette and has an inclined surface in contact with the tape edge in one direction of the tape widthwise movement restricting protrusion, and has a restriction surface of the tape widthwise movement restricting protrusion in the direction without the inclined surface, and the pair of outer sides. Tape width direction movement regulation protrusion which is tape guide And that the height of the matched features.

A pair of inner tape guides is introduced into the tape cassette along with the magnetic head through the rust head inlet of the tape cassette.

In addition, since one side edge of the tape contacts the inclined surface of the inner tape guide, the other side edge of the tape contacts the restricting surface of the inner tape guide and the outer surface of the outer tape guide where the heights coincide with each other. Are regulated.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 is a perspective view of a head peripheral mechanism for a cassette type tape recorder according to a first embodiment of the present invention, wherein (1) is a head mounting plate, and an upper surface of the cassette is provided through a head azimuth adjusting mechanism (2). A head (hereinafter referred to as a magnetic head) 3 is mounted.

As shown in FIG. 2, the azimuth adjustment mechanism 2 has a V-shaped plate spring 5 between the head base plate 4 on which the magnetic head 3 is mounted and the head mounting plate 1. A pair of screws 8 through the threaded holes 6 at both ends of the head base plate 4 and the threaded holes 7 at both ends of the plate spring 5. It is comprised by fixing to the screw hole 9 of this. The magnetic head 3 is urged upward by the plate spring 5 together with the head base plate 4.

Therefore, the screw 8 is rotated so that the azimuth adjustment and the height adjustment of the magnetic head 3 can be performed.

In the head mounting plate 1 located on both sides of the magnetic head 3, an inner tape guide 10 close to the magnetic head 3 and an outer tape guide 11 separated from the jar 3 are each made. .

Each pair of tape guides 10 and 11 is integrally formed on one side surface of the vertical wall 12 protruding from the upper surface of the head mounting plate 1.

As shown in FIG. 3, the pair of inner tape guides 10 can be introduced into the tape cassette 13 together with the magnetic head 3 through the rust ash head introduction portion 14a of the tape cassette 13. It is.

In addition, the pair of outer tape guides 11 are introduced into the tape cassette 13 through the guide introduction holes 14b of the tape cassette 13.

The pair of inner tape guides 10 have upper and lower tape width direction movement restricting protrusions 10a and 10b, and the pair of outer shaft tape guides 11 also move the upper and lower tape width direction movement restricting protrusions 11a and 11b. Have.

As for the pair of inner tape guides 10, the inclined surface 15 is made in the tape width direction movement control protrusion 10b of the lower side as shown in FIG.

The inclined surface 15 is in contact with the lower edge 16a of the tape 16 in the tape cassette 13. When the tape 16 is driven, the upper edge 16b of the tape 16 is inclined. Under the action of the tape width direction movement restricting protrusion 10a, the widthwise position of the tape 16 is regulated with high precision.

The pair of inner tape guides 10 are in a direction without the inclined surface 15, that is, the restricting surface 10 ₁ of the upper tape widthwise movement restricting protrusion 10a and the upper tape of the pair of outer tape guides 11. The heights of the regulating surface 11 ₁ on the widthwise movement regulating protrusion 11a coincide with each other as shown in FIG.

In addition, in the first to third drawings, there is a general metal sheet tape guide 17 having no inclined surface directly fixed to both sides of the magnetic head 3.

The first and third intermediate paths 18 and 19 are pinch rollers, and are folded with corresponding capstans 20 and 21 through the pinch roller inlet 14c of the tape cassette 13.

Inside the tape cassette 13, as shown in FIG. 3, the guide posts 22 and 23 and the rust ash head introduction port 14a for guiding the tape 16 from both sides of the rust ash head introduction portion 14a. The head pad 24 which abuts the magnetic head 3 inside is made.

6 is a front view of the azimuth adjusting mechanism according to the second embodiment of the present invention, and the azimuth adjusting mechanism 2a of this embodiment has a protrusion (not shown) protruding one end of the head base plate 4 onto the upper surface of the head mounting plate 1. By fixing the screw 8 to the upper surface of the 25, and rotating the screw 8 to the upper surface of the head mounting plate 1 via the coil spring 26, the other end of the head base plate 4, The azimuth adjustment of the head 3 can be performed.

7 is a front view of the orientation adjustment mechanism according to the third embodiment of the present invention, and the orientation adjustment mechanism 2b of this embodiment protrudes from the lower surface of the middle portion of the head base plate 4 to the top surface of the head mounting plate 1. The conical projection 27 is brought into contact with the apex, and both ends of the head mounting plate 1 are mounted on the upper surface of the head mounting plate 1 with screws 8, and the screws are mounted on the upper surface of the head mounting plate 1. The coil spring 26 is mounted between the head 8a of the screw 8 at the other end of the head mounting plate 1 and the upper surface of the head base plate 4 at (8).

And the azimuth adjustment of the magnetic head 3 can be performed by rotating the screw 8 of the other end.

In addition, in the said Example of FIG. 6 and FIG. 7, since the other structure is the same as that of 1st Example shown in FIG. 1 thru | or FIG. 5 mentioned above, the same part of drawing is given the same protection, Omit the description.

8 and 9 show a fourth embodiment of the present invention.

This embodiment is applied to an inverting magnetic head.

That is, the inverted magnetic head 3a is attached to the upper surface of the head mounting plate 1 via the head azimuth adjusting mechanism 2c in a reversed order by 180 degrees.

As for the magnetic head 3a, the cylindrical head support body 28 is supported by the tip end.

The front and rear ends of the head holder body 28 are supported by the front and rear vertical walls 12a and 12b of the head mounting plate 1 with a rotating material, and the tape receiving surface of the magnetic head 3a is the center of the front vertical wall 12a. It is exposed from the hole 29.

Located on both sides of the magnetic head 3a, the inner tape guide 10 is formed on the front surface of the front vertical wall 12a, and the outer tape guide 11 is integrally formed on both ends of the front vertical wall 12a, respectively. It is.

The head azimuth adjusting mechanism 2c has a substantially V-shaped leaf spring 31 in the screw holes 30a of the pair of square protrusions 30 protruding to the front of the rear vertical wall 12b of the head mounting plate 1. ) Is screwed into the screw hole 9 of the head mounting plate 1 by inserting the screw 32 inserted into the screw hole 31a at both ends.

And the rotation limit position is restrict | limited by the arm 33 which protruded radially on the substantially middle part outer side surface of the axial direction of the head support body 28 on the upper surface of both ends of the leaf spring 31 alternatively.

The azimuth adjustment of the magnetic head 3a can be performed by rotating the screw 32.

In addition, in this 4th Example, since the other structure is the same as that of 1st Example shown in FIG. 1 thru | or FIG. 5 mentioned above, the same code | symbol is attached | subjected to the same part of drawing, and the description is abbreviate | omitted.

In addition, in the first embodiment shown in FIGS. 1 to 5, the tape guides 17 made of metal foil are directly fixed to both sides of the magnetic head 3, and the magnetic head 3 is fitted to attach a pair of fixing tapes. Although the guide (inner tape guide) 10 is made, it is extremely common that the tape guide 17 directly attached to the magnetic head 3 has no inclined surface, so that it can be manufactured at a low price.

Moreover, since the tape guide 17 directly fixed to the magnetic head 3 is a standard in performing mutual alignment between the magnetic head 3 and the fixing tape guides 10 on both sides thereof, the head position adjusting operation is performed. This is facilitated.

However, the metal sheet tape guide 17 directly fixed to both sides of the magnetic head 3 is not necessarily required, and the object of the present invention can be achieved without making the tape guide 17.

Moreover, in each said Example, although the inclined surface 15 is made in the lower tape width direction movement control protrusion 10b of the inner tape guide 10, it is not limited to this, The upper tape width direction of the inner tape guide 10 is not limited to this. The inclined surface 15 may be made in the movement restricting protrusion 10a, and the lower edge 16a of the tape 16 may be pressed against the downward tape width movement restricting protrusion 10b by the action of the inclined surface 15. .

In this way, the present invention can attach the magnetic head to the head mounting plate via the head azimuth adjustment mechanism, and at the same time, the inner tape guide and the outer tape guide separated from the magnetic head are positioned at both positions of the magnetic head, respectively. In the head peripheral mechanism for a cassette type tape recorder made, each of the pair of tape guides is fixed to the head mounting plate, and the pair of inner tape guides together with the magnetic head through the rust head head opening of the tape cassette. The tape cassette can be introduced into the tape cassette, and has an inclined surface in contact with the tape edge in one direction of the upper and lower tape widthwise movement restricting protrusions, and the restriction surface of the tape widthwise movement restricting protrusions on the side without the inclined surface and the outer tape guide of the one set. Match the height of the tape width direction movement regulation protrusion of the tape It is characterized in that Kin.

Therefore, the positional relationship between the branch head and the tape can be set with a very high accuracy, and furthermore, since it is regulated over a wide range in the tape width direction position, there is no local strain on the tape and there is no fear of burdening the tape. .

Claims (1)

The inner tape guide 10 closes to the magnetic head 3 at both sides of the magnetic head 3 while mounting the magnetic head 3 on the head mounting plate 1 through the head azimuth adjusting mechanism 2. WHEREIN: In the head peripheral mechanism for the cassette-type tape recorder provided with the outer tape guides 11 separated from the magnetic head 3, each of the pair of tape guides 10 and 11 is the head mounting plate 1. And the pair of inner tape guides 10 can be introduced into the tape cassette 13 like the magnetic head 3 through the rust ash head inlet 14a of the tape cassette 13, and the upper and lower tape widths. A restricting surface 10 of the tape widthwise movement restricting protrusion 10a on the side without the inclined surface 15, having an inclined surface 15 in contact with the tape edge in the direction of one 10b of the direction movement restricting protrusions 10a and 10b. tape width direction of the ₁₎ and the pair of outside tape guides (11) Cassette tape recorder head close mechanism, characterized in that it is matched to the height of the regulating surface (11 ₁₎ of the regulating protrusion (11a).