JPH02270111A - Structure of composite floating magnetic head - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floating magnetic head used in a fixed magnetic disk device, and particularly to a composite type floating magnetic head.

[Summary of the invention]

In a composite type floating magnetic head used in a fixed magnetic disk device, the present invention has a slider divided into two pieces AB, and slider B has a V groove for viewing the gap part of the magnetic core chip from the side and a winding on the lower side. The gap-formed magnetic core chip is sandwiched between slider B, which is divided into two parts, and the glass is fused to secure slider A and slider B, thereby creating an ultra-thin composite with stable quality. The present invention provides a type floating magnetic head.

[Conventional technology]

As shown in FIG. 5, a conventional composite floating magnetic head has a slider 1 made of a non-magnetic material, a slit groove 5 for inserting a magnetic core chip 2, and a winding groove 6 for winding the magnetic core chip. A magnetic core chip 2 is provided with a gap formed in advance in the slit groove 5 as shown in FIG.
It was a magnetic head that was glass-fused, polished, and shaped.

[Problem to be solved by the invention]

However, in the conventional composite type floating magnetic head, when the slider 1 and the magnetic core chip 2 are fused together by the glass 3, the magnetic core chip is misaligned. Further, since the gap portion d of the magnetic core chip 2 inserted into the slit groove 5 of the slider 1 cannot be seen from the side, it is very difficult to remove the gap dibs by polishing the running surface 7, which is time consuming and has a poor yield. Furthermore, there is a limit to reducing the thickness of the slider 1 for vertically winding the magnetic core chip 2. There was a problem with this.

Therefore, the present invention is intended to solve these conventional problems.The purpose of the present invention is to enable processing while easily checking gap dibs, ensuring stable high quality and improving yield. Moreover, the present invention provides an ultra-thin type composite floating magnetic head.

[Means for Solving the Problems] A composite floating magnetic head of the present invention is a composite floating magnetic head used in a fixed magnetic disk device, in which a slit groove is provided in a part of a slider made of a non-magnetic material. In a composite type floating magnetic head in which a gap-formed magnetic core chip made of magnetic material is inserted into a slit groove and glass-fused, the slider is divided into two parts A and B, and the gap part of the magnetic core chip is inserted into the slider B from the side. Features include a groove for better viewing and a groove for winding on the lower side, and the magnetic core chip is sandwiched between slider B, which is divided into two parts, and the glass is fused to secure slider A and slider B. shall be.

〔Example〕

FIG. 1 is a perspective view of a composite floating magnetic head according to the present invention. An embodiment of the present invention will be described below with reference to FIGS. 2 to 4.

FIG. 4 shows the machining details of the slider BIB, which is made of the same non-magnetic material as the slider AIA, and the cutout part 10 of the slider AIA shown in FIG. 3(a) is shown in FIG. As shown in a), a V-groove 11 for viewing the gap portion 9 of the magnetic core chip 2 from the side and a winding groove 12 for winding are provided, and the gear portion confirmation V-groove 11 is filled with glass for reinforcement. The glass 3A used at this time is a glass that melts at a higher temperature than the glass 3B used to form the gap of the magnetic core chip 2 shown in FIG. 2 and the glass 3° filled in the running surface side of the magnetic core chip 2. Next, as shown in FIGS. 4(b) and 4(c), the magnetic core chip 2 is sandwiched between two sliders B18, and the slider B I B and the magnetic core chip are separated by glass 3c filled in advance on the running surface side of the magnetic core chip 2. Fuse 2.

The fused glass 3c at this time is a low melting point glass that melts at a lower temperature than the glass 3B used for forming the gap of the magnetic core chip 2 and the glass 3A used for the slider BIB. As a result, the gap portion 9 of the magnetic core chip 2 can be seen from the side surface of the slider, and the winding can be applied to the lower surface side.

FIG. 3 is a diagram showing the processing details of the slider, and the notch of the slider A I A shown in FIG.
Then, the slider B18 shown in FIG. 4(c) is fixed with an adhesive having excellent heat resistance, temperature resistance, and strength, and the slider B18 shown in FIG.
), it is completed by processing the slider shape, polishing, and winding, but since the winding around the magnetic core chip 2 is done on the bottom side, it is possible to shorten the total length of the magnetic core chip 2, making it extremely short. A thin composite floating magnetic head can be created.

〔Effect of the invention〕

As described above, according to the present invention, the sliders A, B
Slider B has a V-groove where the gap of the magnetic core chip can be seen and a winding groove on the lower side.
By sandwiching the gap-formed magnetic core chip between the separate slider B and glass-fusion bonding, and then fixing slider A and slider B, an ultra-thin composite floating magnetic head can be created, making it possible to create a thin fixed magnetic disk drive. It is possible to In addition, since the gear part is visible from the side of the slider, gap dibs machining can be easily confirmed while machining, resulting in a composite type floating magnetic head with high yield and high reliability. It has this effect.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a composite floating magnetic head of the present invention. FIG. 2 is a perspective view of the magnetic core chip of FIG. 1. Figure 3 is an exploded view of Figure 1. FIG. 4 is an exploded view of the magnetic core chip fixing part shown in FIG. FIG. 5 is a perspective view of a conventional composite type floating magnetic head. FIG. 6 is a perspective view of the magnetic core chip of FIG. 5. 1. Urn-Slider IA...Slider A 1Bφ◆Slider B 2...Magnetic core chip 3^...Slider B reinforced glass 3B...Gear part reinforced glass 3c...Slider fused glass 4 fists...coil 5...Slit groove 6...Winding groove 7...Slider running surface 8... Lamp part 9...Gap part 10...Slider A notch 1111...Slider running surface 12...Slider 8 winding groove that's all Applicant: Seiko Epson Corporation Agent: Patent attorney: Kisanbe Suzuki (and 1 other person): Figure 1 Kaya 3 mouths (stomach Tan 4F; 21 1 S meal 1 item

Claims (1)

[Claims] A composite floating magnetic head used in a fixed magnetic disk device, in which a slit groove is provided in a part of a slider made of a non-magnetic material, a gap-formed magnetic core chip made of a magnetic material is inserted into the slit groove, and a glass In the fused composite type floating magnetic head, the slider is divided into two parts: a main body (hereinafter referred to as slider A) and a fixed part of the magnetic core chip (hereinafter referred to as slider B), and the gap between the magnetic core chip and the slider B is divided into two parts. A V-groove for viewing the part from the side and a groove for winding the wire on the lower side were provided, and the magnetic core chip was sandwiched between slider B, which was divided into two parts, and the glass was fused to connect slider A and slider B. The structure of a composite floating magnetic head that is characterized by being fixed.