JPH0883412A - Head fixing device - Google Patents

Abstract

PURPOSE: To provide a simple head holding device capable of enhancing accuracy of the positioning of a magnetic head with respect to a magnetic tape. CONSTITUTION: This device is provided with a head case 2 having a fitting surface 2a in parallel with the width direction of the magnetic tape on the back surface of the magnetic head and a head holding member 3 having a head receiving surface 3a parallel with the fitting surface and facing the back surface of the head case 2 and engaging pawl 4 to be engaged with the head receiving surface 3a and the head case 2. This head holding member 3 is integrally formed with an elastic body and the fitting surface 2a and the head receiving surface 3a are engaged with each other with the engaging pawl 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head fixing device in equipment such as a small headphone player having a magnetic head.

[0002]

2. Description of the Related Art In recent years, with the miniaturization of products such as small headphone tape players that use magnetic heads, various methods of attaching the magnetic head have been proposed. Use the hole
It is typical to fix the head fixing member with a small screw.

An example of the above-mentioned conventional head fixing device will be described below with reference to the drawings.

FIG. 6 is a plan view of a head fixing device in a conventional small headphone tape player. Also in FIG.
Is a side view of the same, and FIG. 7 is a front view of the same.

In FIG. 6, reference numeral 1 is a magnetic tape, and 8 is a magnetic head having a head gap for recording / reproducing signals on / from the magnetic tape 1. 12 is a head fixing member.

Further, 9 and 10 are small screws for fixing the magnetic head, and the magnetic head 8 is a small screw parallel to the width direction of the recording surface of the magnetic tape 1 and perpendicular to the head fixing member 12. It has a screwing post which is screwed with 9, 10.

With the above structure, the magnetic head 8
In this case, the mounting surface 11 perpendicular to the contact surface between the magnetic tape 1 and the magnetic head 8 is brought into contact with the head fixing member 12, and the machine screws 9 and 10 are screwed and fixed to the screwing posts.

[0008]

However, in the above-described conventional head fixing device, the magnetic head 8 is fixed by bringing the mounting surface 11 into contact with the head fixing member 12, but the mounting surface 11 is the cassette tape player main body. In order to reduce the size and weight, it is necessary to make it as narrow as possible, and L in FIG. 5 is extremely short.

Therefore, the contact surface 2d of the magnetic head with the tape 1 is likely to be inclined with respect to the width direction of the tape 1, and the surface having the gap of the magnetic head and the recording surface of the magnetic tape 1 are attached in parallel to each other with high precision. It was difficult to attach the magnetic head.

Such a tilt of the magnetic head deteriorates running stability of the tape and impairs electromagnetic conversion characteristics.

To fix the magnetic head 8, machine screws 9 and 1 are used.
Since 0 is used, the number of parts, the material cost, and the number of assembling steps are disadvantageous.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a simple head fixing device capable of increasing the accuracy of the position of the magnetic head with respect to the magnetic tape.

[0013]

In order to solve the above problems, a head fixing device of the present invention comprises a magnetic head having a mounting surface parallel to the width direction of a magnetic tape on the back surface of a surface having a head gap, and the mounting surface. And a head fixing member integrally formed with an engaging claw engaging with the magnetic head by an elastic body, the head receiving surface of the head fixing member and the mounting surface of the magnetic head. And are locked by the engaging claws.

[0014]

The head fixing device of the present invention has the above structure.
When fixing the magnetic head to the head fixing member in the assembly stage of the magnetic tape reproducing apparatus, the magnetic head is attached to the head fixing member so that the mounting surface of the magnetic head and the head receiving surface of the head fixing member face each other, The magnetic head can be fixed only by locking it with the engaging claws.

At this time, in the magnetic head, the back surface of the surface having the head gap is locked in contact with the relatively wide head receiving surface, and the contact surface of the magnetic head with the magnetic tape is inclined with respect to the width direction of the magnetic tape. It is difficult, and the surface having the gap of the magnetic head and the recording surface of the magnetic tape are always attached in parallel.

[0016]

Embodiments of the head fixing device of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a left side view of a head fixing device according to the first embodiment of the present invention, and FIG. 2 is a plan view of the same device.

In FIGS. 1 and 2, reference numeral 1 denotes a magnetic tape, which runs in contact with the magnetic head 2, which is parallel to the width direction of the recording surface of the magnetic tape 1.
It also has a relatively wide mounting surface 2a.

Next, four engaging claws 4 are formed on the head fixing member 3 having a receiving surface 3a that abuts against the mounting surface 2a.

The head fixing member 3 is made of an elastic material such as synthetic resin, and the elastic force of the engaging claw 4 causes an inclined surface 4a provided in the vicinity of the tip of the engaging claw 4 to be the mounting surface 2a. By making contact with the back surface 2b, the mounting surface 2a of the magnetic head 2 is pressed and fixed to the receiving surface 3a of the head fixing member 3.

Next, FIG. 3 showing a front view of the head fixing device in the embodiment and FIG. 4 showing a front view of a single head fixing member will be described.

The head fixing member 3 has a positioning piece 5,
6 and 7 are integrally formed, and the mounting portion 2c having the mounting surface 2a of the magnetic head 2 is engaged and mounted so as to be surrounded by them.

As described above, according to this embodiment, the mounting surface 2a provided on the back surface of the magnetic head 2 and the head receiving surface 3a of the head fixing member 3 are locked by the engaging claws 4.
Even when it is necessary to downsize the head fixing device in order to reduce the size and weight of the tape player body, the contact surface of the magnetic head with the tape 1 does not tilt with respect to the width direction of the tape 1, and the gap of the magnetic head With magnetic tape 1
It is possible to attach a high-precision magnetic head in which the recording surfaces of the above are attached in parallel.

Further, according to the present embodiment, since a relatively wide mounting surface can be obtained when mounting the magnetic head, the position of the magnetic head can be determined with high accuracy, and the tape running stability and electromagnetic conversion characteristics are improved. Can be made.

Further, according to this embodiment, when fixing the magnetic head to the head fixing member, the magnetic head 2 is mounted while bending the engaging claw 4 against the elastic force of the engaging claw 4. It can be assembled by simple one-touch work without using small screws.

Further, according to this embodiment, the positioning pieces 5, 6, 7 provided on the head fixing device are engaged with the mounting portion 2c provided on the back surface of the magnetic head to prevent the magnetic head from moving and to prevent the magnetic head from moving. The position can be determined with higher accuracy, which contributes to the running stability and electromagnetic conversion characteristics of the tape.

[0027]

As described above, according to the present invention, the mounting surface provided on the back surface of the magnetic head and parallel to the width direction of the magnetic tape is opposed to the head receiving surface of the head fixing member and locked. With this, it is possible to prevent the magnetic head from tilting with respect to the recording surface of the magnetic tape, and the surface having the gap of the magnetic head and the recording surface of the magnetic tape are always abutted in parallel to each other, and it is possible to record and reproduce a high-quality magnetic tape. Become.

When mounting the magnetic head and the head fixing member, a relatively large mounting area can be secured,
The movement / tilt of the magnetic head can be prevented and the mounting position of the magnetic head can be determined with high accuracy, and the running stability and electromagnetic conversion characteristics of the tape can be improved.

The magnetic head is mounted on the head fixing member so that the mounting surface of the magnetic head and the head receiving surface of the head fixing member face each other, and the magnetic head is locked by the engaging claws.
The magnetic head can be fixed to the head fixing member, and a head fixing device that can be attached with one touch can be realized.

Further, since the engaging claw for locking the magnetic head is integrally formed with the head fixing member having the head receiving surface, the number of parts of the head fixing device is reduced, which is easy to manufacture and advantageous in terms of cost. A head fixing device can be realized.

[Brief description of drawings]

FIG. 1 is a left side view of a head fixing device according to a first embodiment of the present invention.

FIG. 2 is a plan view of the device.

FIG. 3 is a front view of the device.

FIG. 4 is a front view of a single head fixing member in the apparatus.

FIG. 5 is a left side view of a conventional head fixing device.

FIG. 6 is a plan view of a conventional head fixing device.

FIG. 7 is a front view of a conventional head fixing device.

[Explanation of symbols]

 2 magnetic head 2a mounting surface 3a head receiving surface 3 head fixing member 4 engaging claw

Claims (1)

[Claims] 1. A magnetic head having a mounting surface parallel to the width direction of a magnetic tape on the back side of a surface having a head gap, a head receiving surface parallel to the mounting surface, and an engaging claw engaging with the magnetic head. A head fixing member integrally formed by an elastic body, and a head receiving surface of the head fixing member and a mounting surface of the magnetic head are locked by the engaging claw. .