JPH0561804U - Magnetic head - Google Patents

Abstract

(57) [Abstract] [Purpose] The structure of the winding frame for the magnetic head, which is assembled by assembling the wound magnetic core in a metal holder, has been improved to ensure sufficient insulation between the holder and the magnetic core. To supply a magnetic head with high reliability and good assembly workability. A magnetic head in which a pair of metallic holders to which a magnetic core 1 having a winding wire 2 is fitted are butted, and a magnetic gap material is sandwiched in one of the butted parts to form a magnetic gap part. In, a part of one brim 6 of the bobbin 5 formed of an insulating material and having a brim 6 at both ends is opened,
U which guides the terminal lead wire 3 of the winding to the portion
The magnetic head uses a winding frame 5 having a letter-shaped terminal guide 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a magnetic head used in a magnetic recording / reproducing apparatus such as a magnetic tape recorder and a magnetic card reader.

[0002]

[Prior Art]

 Conventionally, a magnetic head assembled by a metal holder used in a magnetic recording / reproducing apparatus has a bobbin attached to a magnetic core in advance, a winding is formed on the bobbin, and the magnetic core above the winding is made of a metal. It was assembled by assembling it in the holder of the above, butting them together, sandwiching the magnetic gap material for forming the magnetic gap on one joint surface, and tightening and fixing the holder part. As shown in FIG. 4, in order to ensure insulation between the terminal lead-out wire 3 of the winding 2 wound around the outer circumference of the magnetic core 1 and the magnetic core 1 and the metal holder housed therein, the outside of the collar 6 of the winding frame is secured. Then, the insulating tube 10 was attached to the terminal lead wire 3 between the holder and the magnetic core 1. However, the magnetic head itself becomes small, and it is necessary to use the tube 10 having a small diameter, so that there is a problem that mounting work is difficult and workability is poor.

[0003]

[Problems to be solved by the device]

 The present invention solves the above problems and improves the structure of the winding frame for the magnetic head that is assembled by incorporating the wound-up magnetic core in a metal holder to improve the insulation between the holder and the magnetic core. It is intended to supply a magnetic head which is sufficiently secured and has high reliability and which is easy to assemble.

[0004]

[Means for Solving the Problems]

 The present invention is a magnetic head in which a pair of metallic holders to which a wound core is fitted are butted, and a magnetic gap member is sandwiched in one of the butted parts to form the magnetic gap part. The magnetic head uses a winding frame which is formed of an insulating material and has a flange formed on both ends thereof with a part of one of the flanges opened and a U-shaped end guide formed on that portion.

That is, according to the present invention, a winding frame made of an insulating material is attached to the central portion of a U-shaped magnetic core, and a winding-up magnetic core is formed by winding the winding frame on the winding frame. The magnetic gap material is housed in a metal holder, the end faces of the two magnetic cores housed in the holder face each other, and a magnetic gap material is sandwiched between one abutting surface of the magnetic core material. A magnetic head that is formed by polishing the surface of the magnetic core on the side where a magnetic gap is formed with a gap between them to form the sliding surface of the recording medium. A magnetic head characterized by comprising a winding frame in which a part of one of the collars is opened and a protruding U-shaped end guide for guiding and protecting the end of the winding is formed in that part. ..

[0006]

[Action]

 Insulating tube that has been insulated through the terminal lead wire of the winding is used. A winding frame is used in which a part of the winding frame is cut out and a protrusion with a U-shaped guide groove is formed on the outside. As a result, when the terminal lead wire is insulated by fitting the wire into the groove and assembling it into the holder, it is covered with an insulating sheet inside the holder, so it is securely insulated and easily assembled.

[0007]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view showing a wound-up magnetic core wound using a winding frame having a U-shaped end guide used in the magnetic head of the embodiment of the present invention, and FIG. 2 is a magnetic head of the embodiment of the present invention. FIG. 3 is an external perspective view of a winding frame having a U-shaped terminal guide to be used, and FIG. 3 is an exploded external perspective view illustrating an assembled state of a holder accommodating a wound-up magnetic core according to an embodiment of the present invention.

As shown in FIG. 1, the magnetic head shown in this embodiment has a winding frame 5 (see FIG. 2) formed of an elastic insulating material on the body of a magnetic core 1 processed into a U-shape. , The winding 2 is provided between the collars 6 at both ends, and a U-shaped end guide 7 is formed in an open portion 8 of a portion of the collar 6, which is the end of the winding 2. Through the wire 3, the magnetic core 1 above the winding is completed. As shown in FIG. 2, the bobbin used at this time has a collar 6 formed at both ends of the bobbin 5, and an open portion 8 is provided at a part of one of the collars 6. A U-shaped terminal guide 7 is formed on the open portion 8 so as to project outward. Next, as shown in FIG. 3, the wound magnetic core 1 is housed in a metallic holder 4, and a groove for accommodating a U-shaped terminal guide 7 is formed in the holder 4 and an insulating sheet is formed on the bottom surface. Are arranged. The terminal lead wire 3 of the winding 2 is arranged on the substrate 9. The two holder / magnetic core assemblies thus arranged are butted against the magnetic gap surface side via the magnetic gap material 11, the holder portion is tightened, and if necessary, molded to complete the magnetic head element.

The magnetic head having the above structure is easy to assemble and can be assembled in a short time. Moreover, the winding edge is sufficiently secured, and a highly reliable product is obtained.

[0010]

[Effect of the device]

 As described above, using the reel according to the present invention, workability is improved as compared with the conventional rubber tube that has excellent electrical insulation between the winding terminal lead wire and the metal holder or magnetic core. A good magnetic head can be supplied.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a magnetic core wound using a winding frame having a U-shaped end guide used in a magnetic head according to an embodiment of the present invention.

FIG. 2 is an external perspective view of a winding frame having a U-shaped terminal guide used in the magnetic head according to the embodiment of the present invention.

FIG. 3 is an exploded perspective view showing an assembled state of a holder in which a magnetic core is housed in a winding winding according to an embodiment of the present invention.

FIG. 4 is a winding-up magnetic core obtained by insulating and processing a terminal lead wire of a winding using a conventional insulating tube.

[Explanation of symbols]

 1 magnetic core 2 winding 3 terminal lead wire 4 holder 5 winding frame 6 brim 7 U-shaped terminal guide 8 open part 9 substrate 10 tube 11 magnetic gap material

Claims (1)

[Scope of utility model registration request] 1. A U-shaped magnetic core having a winding frame made of an insulating material attached to the center thereof, and a winding-up magnetic core having the winding wound on the winding frame made of a metal holder. The two magnetic cores housed in the holder are faced to each other so that the end faces of the two magnetic cores face each other, and a magnetic gap material is sandwiched between one abutting surfaces to integrally assemble the magnetic gap material to form a magnetic gap. In the magnetic head that is formed by polishing the surface of the magnetic core on the closed side to form the sliding surface of the recording medium, open a part of one of the collars of the winding frame that is molded with insulating resin and has the collars at both ends. A magnetic head comprising a winding frame in which a protruding U-shaped end guide for guiding and protecting the end of the winding is formed in that portion.