JPS61162811A - Magnetic head - Google Patents

Abstract

PURPOSE:To easily connect a coil wire by providing a coil wire coupling part and an electric coupling part for external connection to a coil bobbin which is used for each core so as to generate magnetomotive force. CONSTITUTION:When a magnetic head is assembled, a terminal plate 14 is fitted in bobbins 12 and 13, the coil wires 12a and 13a are wound, and coil tips are soldered and then sandwiched between coupling parts 14a. Then, cores 3 and 4 are inserted into the bobbins 13 and 14 for cores 3 and 4 and sliders 5a and 5b adhered to a gimbals and a previously positioned printed board 11, and an electric joint part 14b on the reverse surface of the terminal plate 14 is pressed against a land of the printed board 11. Then solder is adhered onto the terminal plate 14 and printed board 11 so as to secure the safety of connection between coil wires 12a and 13a and the safety of connection with the printed board 11. Consequently, the coil wires are easily connected and short- circuiting in soldering operation is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Use The present invention relates to a magnetic head, and particularly to a so-called tunnel erase type floppy magnetic head.

Prior Art This type of magnetic head is classified into (a) laminate type, (b) bulk type, and (C) straddle type, as shown in Figure 4, depending on the configuration of the recording/reproducing core and the erasing core. Ru. □ FIG. 5 shows a perspective view of the laminated magnetic head. This magnetic head has a recording/reproducing gap of 1
A recording/reproducing core 3 having a recording/reproducing core 3, and two erasing cores 4 arranged adjacent to each other on both sides thereof and having an erasing gap 2.
and sliders 5a and 5b provided so as to sandwich both sides of the cores 2 and 4 are adhered with glass, resin, etc., and then the tape running surface is finished by wrapping or the like to make a spherical or flat surface without etching. be. Next, this is positioned and bonded to the gimbal (6), and the recording/reproducing coil 7 is fitted to the core 3. Similarly, in order to form a magnetic circuit in the core 4, the recording/reproducing back core 9 is attached. The erasing back core 10 is bonded and the bonded coils 7.8 are connected to a flexible printed board 11 or the like for electrical connection to the outside.

Since the coil 7.8 is fitted to the core 3.4 made of Mn-Zn ferrite, it is made of nylon or the like to ensure voltage resistance and insulation between the core 3 and the coil 7 and between the core 4 and the coil 8. A bobbin is formed from the material, and a coil wire is wound on this bobbin. The coils 7.8 employ either bi-five winding to eliminate coil winding imbalance during recording or series winding to reduce capacitance. Further, since the magnetic head follows the magnetic medium by the spring force of the gimbal 6, the printed circuit board 11 and the coils 7.8 are connected on the gimbal 6 to make the structure lighter.

Problems to be Solved by the Invention However, in such conventional products, the printed board 11
There is an opening angle where the inter-line space at is limited to about 0.1 nv. In addition, the coil wire diameter is set to 4 to increase the number of turns in a limited space to improve recording/playback characteristics.
It is becoming thinner, from 0 to 30 μm. Soldering each coil wire onto the run shelf of the printed board 1 under the above conditions may cause the coil wire to be burnt during soldering.
Short circuits could occur between run conductors, requiring considerable skill and work time.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to enable easy connection of coil wires.

Means for Solving the Problems In order to achieve the above object, the present invention is a magnetic head having a recording/reproducing core and an erasing core adjacent thereto, which is used to generate a magnetomotive force in each core. The coil bobbin has a coil wire connection part and an electrical connection with the outside.
It has a section.

With this type of function, there is no need to pull out the coil wire from the coil bobbin for a long time, and the pitch dimension of the joint part can be adjusted in advance according to the standard 1. 1J, it is possible to easily connect the wires and prevent short circuits during soldering work.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. As shown in the figure, a terminal plate coupling @16 is specially formed by molding on one piece of the coil bobbin 15 on which the recording/reproducing bobbin 12 and the erasing bobbin 13 are formed. In the present bobbin 15, the terminal plate 14 shown in FIG. 3 is inserted into the groove 16. This terminal board 14 is formed in a U-shape, and has a tongue-shaped coil wire coupling part 14a on its negative side, and an electrical coupling part 14b that contacts the printed board 11 on the other side. . 14c is a tongue portion that presses the groove 16. As the material of the terminal board 14, beryllium copper or linsei copper having spring properties is used in order to obtain electrical conductivity and electrical connectivity by crimping with the printed board 11.

At the time of assembly, after fitting the terminal plate 14 into the bobbin 12.13, the coils 1112a and 13a are wound, and the tips of the coils are soldered and then inserted into the joint portion 14a. Next, the core 3.4 and sliders 5a and 5b glued to the gimbal 6
The core 3.4 is inserted into the bobbin 12.13, and the electrical joint 14b on the lower surface of the terminal board 14 is placed on the run shelf of the printed board 11. to force.

Thereafter, in order to ensure the safety of the connection between the coil wires 12a and 13a and the connection of the printed board 11, solder is applied to the terminal board 14. and adhered onto the printed board 11.

As explained above, according to the present invention, the troublesomeness of connecting coil wires individually is solved, and since the pitch dimension is regulated in advance by the terminal plate 14 formed on the bobbin, the pitch dimension is regulated in advance during soldering work. Short circuits are also prevented.

In addition, in the above, the terminal plate 14 is formed into a bobbin 15.
Although the explanation has been given that they are fitted later, the same effect can be obtained even if the terminal plate 14 is molded simultaneously when the bobbin 15 is formed.

Effects of the Invention As described above, according to the present invention, since the coil bobbin is provided with the coil wire coupling part and the electrical coupling part, the coil wire can be easily connected and short circuits can be prevented during soldering work.

[Brief explanation of drawings]

Fig. 1 is an overall perspective view of an embodiment of the present invention, Fig. 2 is a perspective view of a bobbin, Fig. 3 is a perspective view of a terminal board, Fig. 4 is a diagram showing a conventional example, and Fig. 5 is a perspective view of a conventional example. FIG. 2 is a perspective view of a laminated magnetic head. 3... Core for recording/playback, 4... Core for erasing, 12
... Recording/playback bobbin, 13... Erase bobbin,
14... Terminal board, 14a... Coil wire joint part, 14
b... Electrical coupling part, 15... Coil bobbin, 16
...Groove agent for connecting terminal board Yoshi Morimoto
Hiroshi Figure 2 j μ Figure 3 Horse Figure 4 (Qλ (Q) Figure 5, -λ de

Claims (1)

[Claims] 1. In a magnetic head having a recording/reproducing core and an adjacent erasing core, a coil bobbin used to generate a magnetomotive force in each core includes a coil wire coupling portion; A magnetic head characterized in that it is provided with an electrical connection portion to the outside. 2. The magnetic head according to claim 1, characterized in that the coil wire coupling portion and the electrical coupling portion with the outside have a dual-purpose structure. 3. The structure according to claim 1 or 2, characterized in that each connecting portion is formed of a spring material, and the electrical connection is made by crimping using spring force during external connection. magnetic head.