JPH07153010A - Magnetic head and magnetic head apparatus - Google Patents

Abstract

PURPOSE:To facilitate a positioning of a winding bobbin, to enhance stability and to effectively eliminate occurrence of a malfunction component in an external appearance size of a magnetic head by integrating a bobbin with a core support as a single component. CONSTITUTION:A core support 3a with a winding bobbin core-supports a collar of a winding bobbin 8 to integrate the bobbin 8 with the support and to provide a groove 9. Thus, relative positioning of the bobbin 8 and the support is decided by the component, thereby eliminating necessity of relatively positioning step at the time of assembling. Thus, number of the components is reduced, and its cost is hence decreased. Further, occurrence of malfunction component in external appearance size of a magnetic head can be effectively prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head and a magnetic head device for recording / reproducing information via a magnetic recording medium, such as a magnetic card or a magnetic tape.

[0002]

2. Description of the Related Art An example of the structure of a conventional magnetic head device of this type is a structure type called a clevite type. Figure 9
In addition, as shown in the internal structure diagram of the example, the magnetic core is
It is divided into a front core 1 and a back core 2. In the magnetic head device having such a structure, the core support 3 and the wound bobbin 8 are separate components, and the relative positional relationship between the core support 3 and the bobbin 8 is such that the back core 2 or jigs and tools are The relative positioning was done by.

In FIG. 9, 4 is a case, 5 is a terminal conductor, 6 is a connecting screw for grounding and front / back core 1/2, and 7 is a magnetic gap.

[0004]

However, in the conventional example structure as described above, the core support 3 and the bobbin 8 are provided.
Since and are each formed as a single component, when the core support 3 and the bobbin 8 are mutually positioned, it is necessary to perform positioning by the back core 2 and the magnetic head device built-in jig. In addition, the cost of jigs and tools was required.

Further, according to the above contents, when the force for contacting the winding bobbin 8 and the terminal conductors 5 acts in the magnetic head assembling process, the fixed winding bobbin 8 moves, especially in the case 4. If the winding bobbin 8 moves during resin embedding, the winding bobbin 8 is fixed in a state where the resin is cured, and the winding bobbin 8 is fixed in the moving state. There was a difficulty that In addition, since the core support 3 and the bobbin 8 are each a single component, there is a drawback in that each component has a high cost, and the cost tends to be relatively high.

The present invention has been made in view of the problems of the conventional example of this kind as described above, and facilitates positioning of the winding bobbin 8 and enhances the stability, and is a defective product in the external dimension of the magnetic head. It is possible to surely eliminate the occurrence of.

[0007]

Therefore, in the present invention, the above object can be achieved by forming the bobbin and the core support of this type of magnetic head device into an integral component as a core support with a bobbin. It is what

[0008]

With the above-described structure, for example, one side of the collar portion of the conventional bobbin is shaped as a core support, and the bobbin and the core support are formed as an integral part, so that the positioning process and positioning as in the conventional example can be performed. A jig or the like is unnecessary, which can contribute to cost reduction by simplifying the assembly process of the magnetic head device and further cost reduction of the component cost due to the integrated parts of the core support and the bobbin.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments: (Structure) FIG. 1 is an internal structural diagram (equivalent to FIG. 9) which best shows the characteristics of one embodiment of the magnetic head device according to the present invention. Indicates. In the figure, 1 is a front core, 2 is a back core, 3a is a wound bobbin core support configured as an integral part with the collar portion of the winding bobbin 8 as a core support, and the groove portion 9 I have it. 4 is a case,
5 is a terminal conductor, 6 is a screw for joining the ground and the front core 1 and the back core 2, 7 is a magnetic gap, and d is the depth of the gap. Further, FIG. 2 shows a side view (a) of the core support 3a component with a bobbin and a sectional view (b) taken along the line AA ′.

(Manufacturing Process) Next, an outline of the manufacturing process of the magnetic head device of FIG. 1 will be described with reference to FIGS. FIG. 3 is an explanatory diagram showing the winding method and winding timing of the coil, and FIGS. 4 to 7 are explanatory diagrams showing the order of the method of inserting the back core.

(1) Winding method of coil First, in FIG. 3, the terminal conductor 5 is wound on the bobbin portion 8 before being inserted, and then the terminal conductor 5 is inserted.

(2) Insertion method of back core 1) As shown in FIG. 4, a back core 2 which is opened in an inverted eight shape in advance is provided with a core support 3a having a winding bobbin and a groove 9 in the direction of arrow a in the figure. To insert.

2) Next, as shown in FIG. 5, the back core 2 is deeply inserted in the direction of the arrow b in the drawing.

3) Next, as shown in FIG. 6, the back core 2 is rotated in the direction of arrow c in the figure by utilizing the curved R surface of the back core 2 and the groove portion 9 of the core support 3a.

4) Then, as shown in FIG.
Back core 2, core support 3a and winding bobbin 8 inside
After inserting the front core 1 and pressing it in the direction of arrow d in the figure with the joining screw 6,
The shape opened to the above-mentioned eight shape becomes a U-shape, and the completed state of FIG. 1 is obtained.

As described above, when the back core 2 is inserted into the wound bobbin-equipped core support 3a, the relative position of the bobbin 8 changes because the bobbin 8 and the core support are an integral part. Moreover, since the bobbin 8 is fixed, the relative positioning between the back core 2 and the core support 3a can be performed, so that the positioning step can be eliminated in the magnetic head device assembly process.
Cost reduction is possible. Further, since the bobbin 8 and the core support are integrated parts, the number of parts is reduced, which can also contribute to cost reduction.

(Other Embodiment) FIG. 8 shows another embodiment of FIG.
A corresponding figure is shown. Also in the magnetic head device configured to butt the left and right cores 1a and 1b by forming the magnetic gap 7 by using the wound core support 3b with the bobbin 8 having the through hole into which the core 1a is inserted. The same effect as the first embodiment can be obtained.

[0018]

As described above, according to the present invention,
For example, by using the collar part of the winding bobbin as the core support, the bobbin and the core support are made into an integral part, and the relative positioning of the bobbin and the core support is determined by this part, so The positioning process can be eliminated, and since the bobbin and core support are a single component, the number of components can be reduced, which contributes to cost reduction. It is possible to reliably prevent the occurrence.

[Brief description of drawings]

FIG. 1 is an internal structure diagram of an embodiment.

FIG. 2 is a component diagram of the core support with bobbin of FIG.

FIG. 3 is an explanatory view of the manufacturing process of FIG. 1 (how to wind a coil).

FIG. 4 is an explanatory view of the manufacturing process of FIG. 1 (back core insertion method (1))

5 is an explanatory view of the manufacturing process of FIG. 1 (back core insertion method (2))

6 is an explanatory view of the manufacturing process of FIG. 1 (back core insertion method (3))

7 is an explanatory view of the manufacturing process of FIG. 1 (back core insertion method (4))

FIG. 8 is an internal structure diagram of another embodiment.

FIG. 9 is an internal structure diagram of an example of a conventional clevite type magnetic head device.

[Explanation of symbols]

 1 front core 1a, 1b magnetic core 2 back core 3 core support 3a, 3b core support with winding bobbin 4 case 5 terminal conductor 6 ground and front core / back core joining screw 7 magnetic gap 8 bobbin with winding 9 groove d Gap depth

Claims (1)

[Claims] 1. A magnetic head for recording / reproducing information via a magnetic recording medium, wherein a bobbin and a core support are formed as an integral component as a core support with a bobbin. Head device.