JPH087218A - Magnetic recording / reproducing device - Google Patents

Abstract

(57) [Summary] In a magnetic recording / reproducing apparatus equipped with a magnetic recording / reproducing element having a side-winding bobbin, the processing of the coil winding terminal is easy, the number of constituent parts is small, and the number of assembly steps / cost can be reduced. A magnetic recording / reproducing element is provided. [Structure] Therefore, a part of the flange portion of the rear portion of the side winding bobbin 2 is extended, the terminal fitting 3 is fixed to this portion, and a part of the extension portion is cut out so that the core rear portion is provided with the core holders 5a and 5b. Configured to directly contact the.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a magnetic recording / reproducing apparatus,
In particular, the present invention relates to a magnetic recording / reproducing element used in this type of magnetic recording / reproducing apparatus for recording / reproducing information on / from a magnetic medium.

[0002]

2. Description of the Related Art FIGS. 4 (a) to 4 (f) are views for explaining an assembly structure of an example of a magnetic recording / reproducing element used in a conventional magnetic recording / reproducing apparatus of this type. FIG. 4 shows an example in which only one side of the core 1a is wound, and a side winding bobbin 2 for winding the magnetic cores 1a and 1b is arranged (FIG. 4 (b)). The coil wire 4 is wound a predetermined number of times on the bobbin 2 (Fig. (C)), and this winding terminal is provided with external connection terminal blocks 7a and 7b in advance in a free state.
It is positioned and fixed to the pair of fixed core holders 5a and 5b (Fig. (D)), and thereafter, the ends of the free windings are wired to these terminal blocks 7a and 7b, and the magnetic gap facing surface has a predetermined accuracy. It was manufactured by polishing with a magnetic gap spacer 6 (Fig. (E)) and fixing it by adhesion, and finishing the medium running surface into a predetermined shape (Fig. (F)).

[0003]

However, in the above conventional example, since the winding coil terminals are in a free state, there are the following problems.

1) When the winding core is assembled in the core holders 5a, 5b, a wire may be hooked to break the wire. 2) The winding terminal is free, so that the predetermined polarity of the magnetic circuit is determined. , Display for recognizing each terminal at the beginning and end of winding, or length change, etc. are required. 3) Terminal blocks 7a, 7b for fixing the winding terminals before butting are required. , 4) Soldering with a soldering iron is required to connect the winding ends.

The present invention has been made in view of the above-mentioned problems of the prior art. It is easy to process the coil winding terminal, the number of constituent parts is small, and the number of assembly steps / cost is reduced. It is an object of the present invention to provide a magnetic recording / reproducing apparatus including a magnetic recording / reproducing element that can be reduced.

[0006]

Therefore, according to the present invention, (1) in a magnetic recording / reproducing element having a side winding forming bobbin used in a magnetic recording / reproducing apparatus, the bobbin rear flange is replaced by a magnetic core rear part. Along with avoiding the extension, disposing the terminal fittings on the extension, providing a notch in a part of the extension, and providing a magnetic recording / reproducing element configured to directly contact the core with the core holder. ,
(2) In the bobbin terminal used for the magnetic recording / reproducing element, a plurality of cores are held in the track width direction so that one track can be formed to achieve the above object.

[0007]

With the above-described structure of the present invention, (1) by integrating the bobbin and the terminal, the winding end can be fixed immediately after winding, and the core holder is exposed from the notch. It is possible to directly contact with, the core position accuracy is the same as the conventional one, and the ground can be taken.

(2) As a second effect, since the lead core and the dummy core can be integrally fixed by the bobbin, the bonding is unnecessary and other holding members are unnecessary.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to a plurality of embodiments; FIGS. 1 (a) to 1 (f) are views for explaining the assembly structure of the first embodiment which best shows the features of the present invention. Fig. (Corresponding to Fig. 4 above, an example in which only one core 1a is wound)
4 and the same (corresponding) constituent elements in FIG. 4 are represented by the same reference numerals. 1a and 1b are a pair of magnetic cores, 2 is a side winding bobbin, 3 is a terminal fitting for soldering and fixing a winding terminal to the bobbin 2, 4 is a coil wire, 5a and 5b
Is a pair of core holders for positioning and fixing one or more cores 1a, 1b, and 6 is a magnetic gap spacer for obtaining a magnetic gap.

First, the core 1a is inserted into the bobbin terminal assembly (Fig. (B)), then the coil wire 4 is wound, the winding end is entangled with the terminal fitting 3, and the wire is connected by dip soldering or the like (( c) Figure). After that, the wound cores 1a and 1b are positioned and fixed to the core holders 5a and 5b by caulking, bonding or the like (Fig. (D)), and the magnetic gap forming facing surface is processed to a predetermined accuracy, and then the magnetic gap spacer 6 is sandwiched. ((E)
Figure), butted and fixed by gluing or welding. afterwards,
A magnetic head is formed by finishing the medium running surface to a predetermined shape accuracy (Fig. (F)).

Here, in order to maintain the core position accuracy,
The bobbin terminal is notched so that the cores 1a and 1b can be exposed from a part of the rear portion of the bobbin terminal.

(Second Embodiment) In FIG. 1 of the first embodiment, only one side of the core 1a is wound, but FIG. 5 shows another conventional magnetic recording / reproducing element. The present invention can be applied to a magnetic recording / reproducing element having an integrated read / write function as shown in the front view of FIG. In FIG. 5, 18 is a read coil, and 19 is a write coil. Reference numerals 20 and 21 denote a pair of core holders and reference numerals 22 and 23 denote terminal blocks. In this case as well, there is a problem related to the coil winding terminal treatment similar to that of the first embodiment.

The second embodiment is an example of an embodiment in which the present invention is applied to this type of magnetic recording / reproducing element, and FIG. 2 shows an overall three-view drawing, and FIG. 3 shows a partial configuration three-view drawing. 2 and 3, 11 is a read core, 12 is a write core, and 13
Is a dummy core for recording wider than the read track width at the time of writing, and 14/15 are a pair of read / write bobbins of the second embodiment according to the present invention, and
6/17 is a read / write terminal fitting for fixing each coil wire end, 18/19 is a read / write coil wire, and 20/21 is a core 11
It is each core holder for positioning and fixing / 12.

In this case, bobbin terminals having the terminal fittings 16 and 17 assembled therein are attached to the cores 11 and 12, respectively, and a predetermined number of turns are wound to fix each coil wire end to the terminal fittings 16 and 17. .

After that, the dummy core 1 is attached to the bobbin terminal 14.
3 is inserted in the direction of the arrow in FIG. 2 and fixed by adhesion or the like. At this time, the reading core 11 and the dummy core 1
Since the back gap side with respect to 3 is integrally fixed in the member of the bobbin terminal 14, there is no need to bond it, and another holding tool as in the conventional example is unnecessary.

That is, as shown in FIG. 3, the width W of the portion into which the rear portion of the core is inserted is made equal to the sum of the lead core width Wr and the dummy core width Wd, so that three parts are assembled in this bobbin. It can be carried out, and other holders are unnecessary, and the number of assembly steps and the cost can be reduced.

[0017]

As described above, according to the present invention,
By extending a part of the rear part of the side-winding type bobbin of the magnetic recording / reproducing element and arranging a terminal metal fitting for processing by winding the winding end in the extended part, the number of component parts, process defects, assembly The number of steps and the like can be reduced, and the cost can be significantly reduced.

As a second effect, as shown in FIG. 3, since three parts can be assembled in this bobbin,
No other holder is required, and the number of assembly steps and cost can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an assembly structure of a first embodiment.

FIG. 2 is an overall three-view drawing of a second embodiment.

FIG. 3 is a partial three-view drawing of a second embodiment.

FIG. 4 is an explanatory diagram of an assembly configuration of an example of a conventional magnetic recording / reproducing element.

FIG. 5 is an overall front view of another example of a conventional magnetic recording / reproducing element.

[Explanation of symbols]

 1a, 1b Magnetic core 2, 14 Side winding bobbin 3 Terminal fitting 4 Coil wire 5a, 5b; 20,21 Core holder 6 Magnetic gap spacer 7a, 7b; 22,23 Terminal block 11 Read core 12 Write core 12 Dummy core 14 Reed bobbin 15 Write Bobbin 16 Lead terminal fitting 17 Write terminal fitting 18 Lead coil 19 Write coil

Claims (2)

[Claims] 1. A magnetic recording / reproducing element having a side winding bobbin used in a magnetic recording / reproducing apparatus, wherein the bobbin rear flange portion is extended to avoid the magnetic core rear portion, and a terminal fitting is disposed in the extended portion. At the same time, a magnetic recording / reproducing apparatus comprising a magnetic recording / reproducing element having a notch provided in a part of the extension portion, the core being in direct contact with the core holder. 2. A bobbin terminal used for a magnetic recording / reproducing element, comprising a magnetic recording / reproducing element configured to hold a plurality of cores in the track width direction so as to form one track. apparatus.