JP2558816Y2 - Magnetic head - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head used for magnetic card recording.

[0002]

2. Description of the Related Art Generally, a magnetic head of this type has a configuration in which a pair of substantially U-shaped core pieces are combined with a gap therebetween, and a part of one of the core pieces is wound. Specifically, as shown in FIG. 2, each core piece has a body part extending in a predetermined direction and a pair of flanges extending from both ends of the body part in a direction perpendicular to the predetermined direction. 1 ',
A magnetic core is constituted by combining a pair of the core pieces 1 and 1 '. More specifically, the magnetic core is provided with a winding 2 on the body of the core pieces 1 and 1 ', and a magnetic gap material is formed on a magnetic gap forming portion between the butting surfaces 8 of the pair of core pieces 1 and 1'. 7 are sandwiched therebetween. It is housed and held in a magnetic core holder having such a configuration. The illustrated holder is constituted by a pair of holder members 6 and 6 ′ having a cavity, and the magnetic core is housed in the cavity in the holder members 6 and 6 ′ and the pair of holder members 6 and 6 ′. 6 ′ is tightened with the tightening screw 9. Thereby, it is fixed in the holder. The winding applied to the illustrated core piece 1 'is 0.1
It has a diameter of ０．１0.18 mm.

[0003]

When encoding is performed on a magnetic card using the magnetic head having the above-described structure, a current of about 0.8 to 1.2 A flows. When this current was passed through the above-described winding having a diameter of about 0.1 to 0.18 mm, it was found that the winding generated heat and the magnetic core was heated. Since the magnetic head in the encoding device is used continuously, the heating of the magnetic core progresses, and the temperature sometimes rises above the heat resistant temperature of the inter-line insulating film of the winding. For this reason, there is a problem that a failure such as a short occurs in the magnetic head. An object of the present invention is to provide a magnetic head for solving such a problem.

[0004]

A magnetic head according to the present invention has a magnetic core forming a magnetic path sandwiching a gap forming portion, and a gap material sandwiched between the gap forming portions.
In a magnetic head in which a winding is applied to a part of the magnetic core, a heat radiating means is provided adjacent to the portion where the winding is applied.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG.
A magnetic head according to an embodiment of the present invention is configured by combining a pair of substantially U-shaped core pieces as in the case of FIG.

In the illustrated example, a copper plate 3 having a higher thermal conductivity than the core pieces 1 and 1 'is mounted on the outer surface of the body of the core piece 1', and the winding 2 is placed on the core piece 1 'and the copper plate 3. Is applied. Thus, the copper plate 3 is disposed adjacent to the winding 2. Therefore, the copper plate 3 serves to guide the heat generated in the windings to the heat radiating plate with as little leakage as possible. The pair of core pieces 1 and 1 ′ configured as described above are stored and held in a pair of core holders 6 and 6 ′ having the holder-butting surface 5 in a predetermined direction, that is, a longitudinal direction. A pair of core pieces 1,
The magnetic gap material 7 is sandwiched between the magnetic gap forming portions between the abutting surfaces 8 of the holder members 1 '. Is fixed with a fastening screw 9.

[0007] The illustrated holder member 6 has a portion that is opened at a lower portion in the figure, and
The heat radiating plate 4 is fixed to the screw hole provided in the screw hole 11 with the screw 11. Mold resin is filled in the hollow portions of the pair of holder members 6 and 6 ′, and the pair of holder members 6 and 6 ′ have a pair of holder members 6 and 6 ′ with respect to the reference surface 10.
The longitudinal end face 6 'and the magnetic gap material are polished in an arc shape.

[0008]

The magnetic head according to the present invention has a magnetic core provided with heat radiating means constituted by a body plate and a heat radiating plate. For this reason, the heat generated from the windings can be released, the progress of the heating applied to the magnetic core can be stopped, and troubles such as a short-circuit between lines generated in the magnetic head can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a magnetic head of the present invention.

FIG. 2 is a perspective view showing a conventional magnetic head.

[Explanation of symbols]

 1, 1 'Core piece 2 Winding 3 Copper plate 4 Heat sink 5 Holder-butting surface 6, 6' Holder member 7 Magnetic gap material 8 Core butting surface 9, 11 Fastening screw

Claims (1)

(57) [Scope of request for utility model registration] 1. A magnetic core comprising: a magnetic core forming a magnetic path sandwiching a gap forming portion; and a gap material sandwiched by the gap forming portion, wherein a winding is applied to a part of the magnetic core. In the head, a heat dissipating means is provided adjacent to the portion where the winding is applied, and when applying the winding to the magnetic core,
And a material with high thermal conductivity.
A magnetic head having improved heat radiation efficiency .