JPH01184605A - Magnetic head - Google Patents

Abstract

PURPOSE:To eliminate the direct connection of a lead wire and to facilitate a connecting operation by disposing a metal terminal of a magnetic converter and winding the lead wire of a coil to the on the terminal to solder and connect. CONSTITUTION:A signal is written in a flexible recording medium, the metal terminal 6 is disposed in the bobbin 1 of the magnetic converter 3 and the lead wire 2a of an exciting coil 2 wound on the bobbin 1 is wound on this terminal 6, soldered and connected. This metal terminal 6 is connected to the land part 4 of a flexible print circuit 5. Therefore, it is not necessary to directly connect the lead wire 2a having an extremely small diameter, the connecting operation is facilitated and the head of high yield and high reliability can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head for writing or reading information signals to or from a medium in an external storage device of an electronic computer, particularly in a floppy disk device using a flexible medium.

[Prior Art] Conventionally, as shown in FIG. 3, this type of magnetic head includes an excitation coil 2 wound around a bobbin 1, and a magnetic transducer for reading out or reading information signals from a flexible recording medium. 3
and a flexible printed circuit (hereinafter referred to as FPC) 5 having land portions 4, 4, etc., and a lead wire 2 of an excitation coil 2 wound around a bobbin 1.
a was directly soldered to the land portion 4 of the FPC 5.

[Problems to be Solved by the Invention] As described above, the lead wire 2a of the coil 2 is directly joined to the land portion 4 by soldering, but the core diameter of the coil 2 is generally φ0.03 to 0.04, which is very small. Because the wire is thin, disconnection, insulation, and short circuit failures occur during work. High reliability is also required for the joints. Therefore, workers are required to have a high degree of maturity, and there are also the problems of defects and reliability mentioned above.
It is difficult to automate, and as a result, it is necessary to rely on human labor tactics by selected workers, which has the disadvantage of not being able to rapidly increase production or reduce costs.

An object of the present invention is to provide a magnetic head that solves the above-mentioned problems.

[Means for Solving the Problems] The present invention includes a magnetic transducer that includes an excitation coil wound around a bobbin, writes information signals to or reads information from a flexible recording medium, and a flexible printed medium that has a land portion.
In the magnetic head equipped with a circuit, the bobbin has a metal terminal, the lead wire of the excitation coil wound around the bobbin is tied around and soldered to the metal terminal, and the metal terminal is connected to the flexible circuit. This magnetic head is characterized by being bonded to the land portion of a printed circuit.

[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

1 and 2, the present invention includes an excitation coil 2 wound around a bobbin 1, a magnetic transducer 3 for writing or reading information signals on a flexible recording medium, and land portions 4, 4, 4, and 4. ..., and the bobbin 1
A metal terminal 6 is integrally molded on the bobbin 1, and the lead wire 2a of the coil 2 wound around the bobbin 1 is tied around the metal terminal 6 and soldered to it, and the metal terminal 6 is joined to the land portion 4 of the FPC 5. be. Note that the metal terminals 6 are bonded to the land portions 4 of the FPC 5 using soldering or other bonding methods.

According to the present invention, the lead wire 2a of the coil 2 is connected to the metal terminal 6.
Since the lead wire 2a is tied around and bonded to the land portion 4 of the FPC 5, there is no need to directly bond the lead wire 2a to the land portion 4 of the FPC 5.

[Effect of the Invention 1] As explained above, according to the present invention, the lead wires are tied and bonded to the metal terminals in advance in the coil assembly (ASSY), so that the lead wires can be directly connected during subsequent assembly of the magnetic head. Since there is no need for bonding and the bonding is between the metal terminal and the land, bonding can be easily performed without requiring operator training, resulting in high yields and high reliability, and it is possible to introduce automatic machines. This has the advantage that it is possible to provide a magnetic head that is easy to manufacture and can significantly reduce costs.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing one embodiment of the present invention.
FIG. 3 is a perspective view showing the coil assembly of the magnetic transducer in the figure. FIG. 3 is a perspective view showing a conventional magnetic head. 1...Bobbin 2...Coil 2a...
Coil lead wire 3...Magnetic transducer 4...Land portion 5...Flexible printed circuit (FPC)
) 6...Metal terminal

Claims (1)

[Claims] 1. A magnetic head that includes an excitation coil wound around a bobbin, and is equipped with a magnetic transducer for writing or reading an information signal on a flexible recording medium, and a flexible printed circuit having a land portion. It has a metal terminal, and the lead wire of the excitation coil wound around a bobbin is tied around the metal terminal and soldered to it, and the metal terminal is connected to the land part of the flexible printed circuit. magnetic head.