JPH0677013U - Magnetic head for floppy disk drive - Google Patents

Abstract

(57) [Abstract] [Purpose] The head core that constitutes the magnetic head is fitted into the fitting part of the resin molded product body, and the resin is molded.
This is to obtain a magnetic head for a floppy disk drive in which a slider is adhesively fixed to the upper surface of a resin molded product body. [Structure] A head core 2, a slider 3 forming a tape sliding surface, a resin molded product body 4 having a fitting portion 4a and a recess 4b for assembling the head core 2 and the slider 3, and a resin molded product body 4 described above. It is composed of a main part with a shield ring 5 that holds the periphery of the
The slider 3 is adhesively fixed to the concave portion 4b formed on the upper surface of the resin molded product main body 4, and the head core 2 is inserted and fixed to the fitting portion 4a of the resin molded product main body 4 by the resin.
It is characterized in that the periphery of is held by the shield ring 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a magnetic head for a floppy disk drive used in electronic devices such as personal computers and word processors.

[0002]

[Prior art]

 In general, magnetic heads for floppy disk drives used in this kind of electronic equipment have been proposed with various structures and shapes according to their purposes and functions. It is fixed to the tip of the carriage provided in the floppy disk drive unit, and signals can be recorded or reproduced on the floppy disk surface inserted in the drive unit.

An example of a conventional magnetic head for a floppy disk drive will be described below with reference to the perspective view shown in FIG. In the figure, the main part of the magnetic head 21 is composed of a head core 22, sliders 23 and 24, a shield ring 25, and the like. First, the head core 22 is composed of a center core 22a and a pair of front cores 22b formed of a ferrite material having a high magnetic permeability, and the front cores 22b are bonded to both side surfaces of the center core 22a with a glass adhesive. And a gap is formed.

Further, the sliders 23 and 24 are formed of a ceramic material and have an escape portion for a coil bobbin (not shown) assembled to the head core 22. Then, the upper portions of the sliders 23 and 24 are adhered so as to sandwich both sides of the head core 22, and the head core 22 and the sliders 23 and 24 are adhered and integrated by an adhesive agent. Assembled to be retained.

[0005]

However, in the magnetic head for a floppy disk drive having the above-described conventional structure, the slider is formed of a ceramic material, so the material cost is high, and even if the slider includes an adhesive surface, There were problems such as high cost, which required high processing accuracy. In addition, after the slider is bonded to the head core, it takes time to clamp and place it with a jig until the adhesive solidifies, and at the production process, the shock may cause peeling at the bonded part. There was a problem such as.

An object of the present invention is to solve the above-mentioned problems of the conventional structure. The head core constituting the magnetic head is fitted into the fitting portion of the resin molded product body to mold the resin and the slider. In order to obtain a magnetic head for a floppy disk drive, which is adhered and fixed to the upper surface of the resin molded product body.

[0007]

[Means for Solving the Problems]

 In order to achieve such an object, a magnetic head for a floppy disk drive according to the present invention comprises a head core, a slider forming a disk sliding surface, and a fitting portion and a recess for assembling the head core and the slider. The main body consists of the resin molded product body with the above-mentioned structure and the shield ring that holds the periphery of the resin molded product body.The slider is bonded and fixed to the recess formed in the upper surface of the resin molded product body, and It is characterized in that the head core is inserted into the joint portion and fixed by a resin, and the circumference of the resin molded product body is held by a shield ring.

[0008]

[Action]

 Based on such a configuration, in the magnetic head for a floppy disk drive according to the present invention, the slider is bonded and fixed to the upper surface of the resin molded product body, and the head core is inserted and fitted in the fitting part of the resin molded product body. By fixing with resin and holding the periphery of the resin molded product main body with a shield ring, the volume of the expensive slider is small and the slider is easy to process, so material cost and processing cost are reduced. Cost reduction is possible.

[0009]

【Example】

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

FIG. 1 is an exploded perspective view showing a magnetic head for a floppy disk drive of the present invention, and FIG. 2 is a perspective view showing its assembly and order. First, a magnetic head 1 for a floppy disk drive according to the present invention comprises a head core 2 formed of a magnetic material such as ferrite, a slider 3 forming a disk sliding surface, and a resin for assembling the head core 2 and the slider 3. A main part is constituted by the molded product body 4, a shield ring 5 for holding the periphery of the resin molded product body 4 in which the head core 2 and the slider 3 are assembled, and the like.

The head core 2 is composed of a center core 2a and a pair of front cores 2b, and the front cores 2b are bonded to each other on both sides of the center core 2a via a glass adhesive to form a gap. The slider 3 is formed of ferrite, has a predetermined width d, and has a predetermined thickness such that the surface is polished.

On the other hand, a recess 4b is formed on the upper surface of the resin molded product body 4 for assembling the head core 2 and the slider 3 so that the fitting portion 4a and the slider 3 can be bonded and fixed while the head core 2 is fitted. ing. A hollow portion (not shown) is formed inside the resin molded product body 4 so that the coil bobbin to be assembled with the head core 2 can be housed therein.

Hereinafter, the assembling order of the magnetic head 1 configured as described above will be described. First, the slider 3 is fixed to the recess 4b formed on the upper surface of the resin molded product body 4 with an adhesive. Next, the head core 2 is inserted into the fitting portion 4a of the resin molded product body 4, and the periphery of the head core 2 is fixed with resin. Then, the periphery of the resin molded product body 4 is fitted into a shield ring 5 formed of permalloy or the like, and the surfaces of the head core 2 and the slider 3 are polished to form a disk sliding surface, thereby forming a magnetic head. 1 is configured.

Therefore, in the magnetic head according to the embodiment of the present invention, the volume of the slider 3 is small and the slider 3 can be easily processed, so that the cost such as the material cost and the processing cost can be reduced. Further, since the head core 2 is inserted into the fitting portion 4a of the resin molded product body 4 and fixed by the resin, the step of adhering to the slider 3 becomes unnecessary.

FIG. 3 is an exploded perspective view of a magnetic head for a floppy disk drive showing another embodiment of the present invention. The resin molding main body 4 is fitted with a fitting portion 4a to which the head core 2 is fitted, and a slider 3. And a recessed fitting portion 4c into which the head core 2 and the slider 3 are fitted respectively in the fitting portion 4a and the recessed fitting portion 4c of the resin molded product body 4, and It is made by fixing the surrounding area with resin. Here, the slider 3 is made of a magnetic material such as ferrite or permalloy, or ceramic, and the shield ring 5 is made of an alloy of permalloy and copper, or ferrite.

FIG. 4 is a perspective view of a magnetic head for a floppy disk drive showing still another embodiment. When molding the base body 6 with ferrite, permalloy or the like, a slider portion is formed on the upper surface of the base body 6. 7 and a fitting portion 6a into which the head core 2 is fitted are integrally formed, and the head core 2 is inserted into the base body 6 and fixed by resin. Here, the shield ring 8 is molded in the inside of the base body 6 in advance.

In addition to the above embodiment, when the resin molded product body 4 is molded, the shield ring or the slider 3 may be previously inserted at a predetermined position and integrally molded. It is also possible to use a material in which magnetic powder is mixed in the resin molded product body 4.

[0018]

As described in detail above, the magnetic head for a floppy disk drive of the present invention comprises a head core, a slider forming a disk sliding surface, and a fitting for assembling the head core and the slider. The main body of the resin molded product main body having the parts and recesses and the shield ring that holds the periphery of the resin molded product main body, and the slider is bonded and fixed to the recessed part formed on the upper surface of the resin molded product main body. Since the head core is inserted into the fitting part of the resin molded product body and fixed with resin, and the periphery of the resin molded product body is held by the shield ring, the volume of the slider, which requires high material costs, is small, and Since the slider can be easily processed, it is possible to significantly reduce the cost. Further, since the head core is fixed to the fitting portion formed on the resin molded product body by the resin and then fixed, the step of adhering to the slider is unnecessary, and the productivity can be improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a magnetic head for a floppy disk drive according to the present invention.

FIG. 2 is a perspective view showing a process of assembling a magnetic head according to the present invention.

FIG. 3 is an exploded perspective view of a magnetic head for a floppy disk drive showing another embodiment of the present invention.

FIG. 4 is a floppy disk showing still another embodiment.
It is a perspective view of a magnetic head for a drive.

FIG. 5 is an exploded perspective view showing a conventional magnetic head for a floppy disk drive.

[Explanation of symbols]

 1 Magnetic head for floppy disk drive 2 Head core 3 Slider 4 Resin molded product body 4a Fitting part 4b Recess 5 Shield ring

Claims (1)

[Scope of utility model registration request] 1. A resin molded product body having a head core, a slider forming a disk sliding surface, a fitting portion for assembling the head core and the slider, and a recess, and a periphery of the resin molded product body. It consists of the main part with the shield ring, and the slider is adhesively fixed to the recess formed on the upper surface of the resin molded product body, and the head core is inserted into the fitting part and fixed with resin, and the periphery of the resin molded product body A magnetic head for a floppy disk drive, which is configured to be held by a shield ring.