JPH0741707U - Magnetic head in floppy disk drive - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify the manufacturing of the magnetic head of a floppy disk drive to reduce the labor and improve the yield. [Structure] Floppy disk drive 10 composed of slider 17 and core 18 Core 1 of magnetic head 14
8 is constructed separately from the slider and incorporated into the slider 17.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a magnetic head in a floppy disk drive, and more particularly to a magnetic head in a floppy disk drive whose manufacturing is simplified.

[0002]

[Prior art]

 A conventional magnetic head of this type of floppy disk drive will be described with reference to FIGS. In the figure, 1 is a magnetic head of a floppy disk drive, and the magnetic head 1 is formed by incorporating a core 3 into a slider 2. A coil 4 is wound around the core 3 so that data can be read from and written to a floppy disk (not shown) by utilizing magnetic characteristics.

The core 3 is made of a ferromagnetic material such as ferrite, and first, as shown in FIGS. 13 to 15, a read / write gap 5 and a data erasing gap 6 are provided on the upper portion. In addition, it is formed in a rectangular shape in which three leg portions 7, 7, 7 are provided in a protruding manner. Then, after incorporating the core 3 into the slider 2, as shown in FIGS. 11 and 12, the core 3 is ground and chamfered together with the slider 2, and the coil 4 and the like are attached to form the head 1. It

By energizing the coil 4, the magnetic flux of the floppy disk can be erased by the magnetic flux leaking from the gap 6, and the magnetic flux of the magnetic flux can be written in the floppy disk by the magnetic flux leaking from the gap 5. be able to. Further, the magnetic flux of the recorded magnetic data can enter the core through the gap 5 to cause the coil 4 to reproduce the voltage and read the data.

[0005]

In the conventional magnetic head described above, after the core is incorporated into the slider, the magnetic head is polished to obtain a magnetic path cross-sectional area necessary to obtain the desired characteristics, and then the disk is damaged. It was chamfered so that it would not be given. However, even before the core was assembled into the slider, it was ground to a predetermined size, and it had to be further polished even after it was assembled into the slider, which required a lot of time and labor. Therefore, there is a technical problem to be solved in order to simplify the manufacturing of the magnetic head by enabling easy polishing and chamfering, and an object of the present invention is to solve the problem.

[0006]

[Means for Solving the Problems]

 This invention was proposed to achieve the above object, and a magnetic head composed of a slider and a core was made to slide on the surface of a floppy disk to read and write data on the floppy disk. In a floppy disk drive, the magnetic head in a floppy disk drive is provided, in which the core of the magnetic head is ground separately from the slider and incorporated into the slider.

[0007]

[Action]

 In this invention, the core of the magnetic head is polished and chamfered separately from the slider, and the polished and chamfered core is incorporated into the slider to manufacture a magnetic head. Therefore, the steps of simultaneously polishing and chamfering the slider and your are simplified, and the magnetic head can be easily manufactured.

[0008]

【Example】

 An embodiment of the present invention will be described below in detail with reference to FIGS. In the figure, 10 is a floppy disk drive, and as shown in FIG. 1, a carriage 11 is mounted in the rear portion of the floppy disk drive 10.

Magnetic heads 14 and 14 are fixed to the inner surfaces of the base 12 and the carriage arm 13 of the carriage 11, and the floppy disk 16 inserted from the insertion opening of the floppy disk drive 10 is viewed from both front and back sides. It is constructed so that it can be sandwiched and slid on the floppy disk 16. The magnetic heads 14 and 14 can read / write data from / to the floppy disk 16.

As shown in FIGS. 2 to 4, the magnetic head 14 is formed by incorporating a core 18 into a slider 17. The core 18 is made of a ferromagnetic material such as ferrite, and has a gap 19 for reading and writing data and a gap 20 for erasing data formed on the top thereof. In addition, I is an interference fringe of light. Further, leg portions 21, 21, 21 are projectingly provided on the core 18, and coils 22, 22 are wound around the left and right leg portions 21, 21. On the other hand, a protruding portion 23 having a flat upper surface is formed at the front portion (left side portion in the figure) of the slider 17, and the core 18 is incorporated in the rear portion of the protruding portion 23.

First, as shown in FIGS. 5 to 7, the core 18 is formed in a rectangular shape in which the gaps 19 and 20 are formed in the upper portion and the leg portions 21, 21 and 21 are provided in a protruding manner. Be done. Then, the corner portion of the core 18 is polished and chamfered as shown in FIGS. At this time, since the core 18 is polished, it is possible to easily perform the polishing work for the extremely small core 18. Further, a flat surface is formed on the upper surface of the core 18, and the gaps 19 and 20 are located in the flat surface.

The magnetic head 14 can be easily manufactured by mounting the coils 22 and 22 on the legs 21 and 21 of the core 18 and incorporating the coils 18 into the chamfered slider 17 in advance. . A recess 24 is formed between the protruding portion 23 and the upper portion of the magnetic head 14. The recess 24 serves to attract the magnetic head 14 to the floppy disk 16 when the magnetic head 14 slides on the surface of the floppy disk 16.

Thus, the floppy disk 16 inserted in the floppy disk drive 10 is rotated to slide the magnetic heads 14, 14 onto the surface of the floppy disk 16 and to the coils 18, 18, 18, 18. By energizing the magnetic flux, the magnetic flux acts on the floppy disk 16 from the gaps 19 and 20 to erase and write data.

The magnetic data written on the floppy disk 16 enters the core 18 through the gap 19 and causes the coils 22 and 22 to reproduce the voltage. Therefore, the data on the floppy disk 16 can be read. Since the slider 17 and the core 18 of the magnetic head 14 are chamfered when reading or writing the data, the floppy disk 16 is not damaged.

The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified version.

[0016]

[Effect of device]

 As described in detail in the above-mentioned one embodiment, this invention is constructed so that only the core of the magnetic head is polished and can be incorporated into the slider, so that the polishing work requiring fine adjustment is simplified. Further, the magnetic head can be created only by incorporating the core into the slider.

Therefore, this is a device having a truly practical value in that the labor for manufacturing the magnetic head can be reduced, the cost can be reduced, and the quality and the yield can be improved.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a floppy disk drive.

FIG. 2 is a plan view of a magnetic head.

FIG. 3 is a partially cutaway side view of a magnetic head.

FIG. 4 is a cross-sectional view of a magnetic head.

FIG. 5 is a plan view of the core before polishing.

FIG. 6 is a front view of the core before polishing.

FIG. 7 is a side view of the core before polishing.

FIG. 8 is a plan view of a polished core.

FIG. 9 is a front view of a polished core.

FIG. 10 is a side view of a polished core.

FIG. 11 is a front view of a conventional core.

FIG. 12 is a partially cutaway side view of a conventional magnetic head.

FIG. 13 is a plan view of a conventional core before polishing.

FIG. 14 is a front view of a conventional core before polishing.

FIG. 15 is a side view of a conventional core prior to polishing.

[Explanation of symbols]

 10 floppy disk drive 14 magnetic head 16 floppy disk drive 17 slider 18 core

Claims (1)

[Scope of utility model registration request] 1. In a floppy disk drive in which a magnetic head composed of a slider and a core slides on the surface of a floppy disk to read and write data on the floppy disk, the core of the magnetic head is referred to as a slider. A magnetic head in a floppy disk drive characterized by being separately ground and incorporated into a slider.