JPS5936313A - Magnetic head - Google Patents

Abstract

PURPOSE:To facilitate easy lead-out of a coil lead, by forming a coil lead leading groove from the back side of the rear end of a coil through the rear end of a magnetic core as well as a cut-through groove crossing at the back side of the coil rear end. CONSTITUTION:Two core bars 1B'' and 1B' having basically the same size are adhered and laminated to each other to form a magnetic core 1B. In such a constitution of the core 1B, a coil lead 11' is never damaged at a corner of a side wall, etc. although the end of a head coil 2 has an inclination as the lead 11' since a side 23 of a cut-through groove 22 is set on the same level as the front end wall surface 19 of a groove 18. The tip of a coil lead 11 is led to the outside of a head holder 7 simultaneously when a magnetic head element 3 is fitted into an element holding groove 12. In such a way, a coil lead can be led out easily to prevent the generation of a disconnection, etc.

Description

[Detailed description of the invention] This relates to the first magnetic core.

Multi-channel f-sieving heads used in magnetic recording and reproducing devices for measurement data acquisition are generally those with 7 to 2I channels, T'-2 pairs of channels, 3 to I
It is divided into a recording magnetic head assembly and a reproducing magnetic head assembly.
3) is a front view and a cross-sectional view of the right half taken along line A in FIG. 1 (Δ), respectively, showing a first example of a conventional magnetic head assembly. Figure 1 (8) l
As shown in (rl), a head coil 2 is wound around one or both of a pair of magnetic cores 1 to form a pair of magnetic head elements 3. Take the pieces and butt them together to form one channel of magnetic spatulas 1-5.Multiple magnetic spatulas arranged with regular bits 1iJJ 1-5. Gap between adjacent magnetic spatulas 1-5. Shielding plate 6T installed to block the damage (II3. Qihetsu 1-5. Shielding failure 6
＼1-Holter-7゜Hold the magnetic spatulas 1 to 1-holter 7, along with the terminal plate 8, etc., for connecting the spatulas 1 to coil 2 and the external head jK moving circuit (not shown) via a relay connection. It is composed of q. The spatula 1 - the internal space of the head halter 7 provided for containing the coil 2 ] 0 includes the spatula 1
- Fill the coil 2 with moisture-proof resin or the like in order to keep the upper air characteristics stable.

The coil lead 11 of the head coil 2 is guided to the -'':M daughter plate 8 through holes, grooves, etc. formed in the spatula 1-holder 7, etc.

Incidentally, such multi-channel magnetic heads are generally manufactured. During the Kamoai process, the work of leading out the coil lead to the terminal board 8 is performed when the thickness of the coil lead is 0.02 mm.
It is extremely thin with a diameter of ~0.05 rnrn, making it difficult to handle, and is easy to break, making it troublesome and requiring skill.

In addition, in the case of a model with a large number of channels such as a 21-channel type head, if the magnetic head is constructed by winding coils around both sides of the magnetic head element and butting them together, the total number of leads of the coils of the recording and reproducing spatula 1- Approximately 170 books
1.It is extremely difficult to completely eliminate accidents such as insulation failure and wire breakage.

Conventionally, when manufacturing such a magnetic spatula 1 to an assembly 9, the following configuration was used during the process, especially for leading out the coil winding end 1-j11 (coil winding end) to the terminal plate 8. There was.

As a first example, as shown in FIG. 1 (13), a diameter of about 0.5 mm is placed near the element holding groove 12 of the spatula 1 and the halter 7.
Provide a glue hole 1 to a lead-out hole 13 of about mm, and connect the coil 2 to the spatula 1.
Each coil Lee 1- (winding end of the coil) I taken out from the rear end
There is a structure in which the lead I is guided to the end slope 8 through the lead outlet hole 13.

However, in the case of such a structure, in manufacturing the head holder 7, the machine cutting work that involves drilling a large number of small-diameter lead-out holes 13 as described above must be done with great care, which impairs work efficiency. Furthermore, there is a risk that the coating of the coil lead 11 may be stripped at the corner of the lead outlet hole 13, causing an insulation failure. In order to prevent this, it is necessary to perform some work such as chamfering and bevelling the corners of the lead outlet hole I3, and since the shape is minute, the work must be done using a stereomicroscope, which greatly reduces work efficiency. bad. When passing the coil lead 11 through the lead outlet hole 13, in order to make the work easier, it is necessary to insert the magnetic head element 3 into the element holding groove 1 so as not to interfere with the operation of the Vincera 1- which handles the coil lead I. It is necessary to temporarily hold the coil relay 1-'I+ on the top of the spatula 1-holder 7 while working without inserting it into the coil reel 1-'I+. cause not to do so.

This work is done on the coil lead 11, lead outlet hole 13 or 4f.
4. Because it is always small, you can use a stereomicroscope to do this, or as described above, fit the bottle 1 on the tip of the swinging coil reet 11 and pinch it with a pincer, and then lead lead-out hole 1:
It was a very inefficient operation because the insertion work had to be done by re-aligning pin 1- with pin 3.

Next, as a second example, after winding the head coil 2 around the magnetic core 1 as shown in FIG. From the end to the magnetic core] Back end of the core +jii (magnetic head - the side opposite to the butt surface of the elements) align and glue on medium heat, and place the spatulas 1 to holter 7 Place the element holding groove 12 at the location exactly corresponding to the coil lie 1='ll.
When the magnetic spatula 1 and the element 3 are inserted into the element holding groove 12, the part of the coil reel l"II (the part bonded after the 1G magnetic core 1) is simultaneously connected to the lead lead-out groove 14. 1, and the coil relay 1-11 can be drawn out.

However, with this configuration, machining is required to provide the lead lead-out grooves 111 on the spatula 1 and the porter 7. Since the milling cutter υ II I has a slow machining speed of 1, it takes a long time for machining. , not only does the cost of the parts become high, but also the magnetic core 1
The work of gluing it on the rear part was difficult, and it was difficult to decide the position, and there was also the disadvantage that it damaged the covering of the -C, J1'11 leads at the corners of the side wall of the lead lead-out groove 14, causing poor insulation. .

As a third step, as shown in FIGS. 3(A) to (1)), along the center of the back surface of the magnetic core IA, . J
From the rear end of the coil 2 to the rear end of the mosquito air IA - (2 1 - providing a lead-out groove 1G, \tsu 1 - the carp taken out from the rear end of the coil 2) L Lee I'll to this groove. 1 through 16
There is one that is configured so that the essential core IA is pulled out to the rear.

When configured in this way, a machine for forming the lead lead-out grooves 1 and 1 in the holder 7 to the spatula as in the second example is used.
It is relatively easy to fix the coil 1-11 to the rear of the magnetic core 1A without any machining, and there is no need to worry about shifting the fixing position. , 0)) Two types of core pieces I A' and J as shown in FIG. By stacking, a large number of grooved cores IA can be obtained at the same time, which is extremely efficient.

However, in order to pull the coil lead 11 from the rear end of the spatula 1 to the coil 2 into the remaining one downward groove 1 to the lead-out groove 16, the coil lead 1 is pulled near the rear end of the head coil 2.
1 or protrudes from the lead lead-out groove 1G, and the magnetic head element 3
When it is inserted into the element holding groove 12 of the head holder 7, it may get caught in the corner 15 of the head portarf and be damaged, causing wire breakage or poor insulation.

Of the three conventional examples described above, the present invention is superior in terms of the cost of machining parts (1), workability in the assembly process, and less risk of accidents such as wire breakage and poor insulation. Focusing on the superiority of the structure of the third conventional example compared to other conventional examples, it was made to eliminate all the drawbacks of the conventional example. It is an object of the present invention to provide a magnetic head in which the work of drawing out the coil reel l- in the assembly q process is easy, and the possibility of occurrence of poor insulation, disconnection, etc. can be completely eliminated.

That is, the features of the present invention are that a groove 71) for leading out the coil 2 is provided in the center of the side part of the magnetic core, and the groove 71 is inserted into the rear end of the magnetic core from the rear of the rear end of the coil. A cut-through groove is provided at a rear position of the rear end of the coil in a direction intersecting with the groove (this is because the coil has an IB magnetic core).

The present invention will be explained below based on the illustrated embodiments.

Figures 4+A), (13) and (0) are a right side view, a top view and a rear view, respectively, showing the configuration of an embodiment according to the present invention.

In the same figure, the spatula 1 and the coil 2 are aligned along the back surface 17, which is the positioning surface of the magnetic core 113 relative to the spatula core (the surface opposite to where the magnetic head elements 3 butt each other).
A groove for leading out the coil saw 1 (hereinafter referred to as lead leading groove) 18 is provided from the rear end of the magnetic core 113 to the rear end of the magnetic core 113, and a front end wall surface 19 of this lead leading groove 18 is provided.
is an inclined surface having a predetermined angle of inclination from the back surface 17 to the bottom surface 20. Both side walls 2 of this lead lead R18
1 is the magnetic core 'I [1 spatula on the back side
A cut-through groove 22 that opens upward in a substantially V-shape in a direction intersecting with the branch groove 18 is provided at the rear position of the rear end. One side 2 on the front side of this cut-through groove 22 is the same as the front end wall surface (slanted surface) 19 of the groove 18.

In such a configuration, the working method for leading out the coil lead 1-11 is to first wind the head coil 2 around the magnetic core 113 via the insulating band 2.
Extend the lead straight to the rear of the magnetic core IB, and then push down the pull-out part 25 into the cut-through groove 22 with the pin 2, and insert the part beyond the pull-out part 25 into the lead-out groove 18. Then, fix the coil reel l-'11 in the groove 18 with instant adhesive or the like.Fourth
Figure (T)) shows a schematic cross-sectional view of the magnetic head element 3 assembled in this manner when it is assembled into the head +' boulder 7.

By making the structure as shown in Figure 2, the winding end of the coil 2 can be connected to the spatula 1 or the winding end of the coil 2 can be connected to the coil 11 as shown in Fig. 4 (A).
Even if it is slanted like ', the front side 23 of the September through groove 22 and the niT end wall surface 15) of the groove 18 are on the same plane, so the coil Lee 1-711
There is no risk of harming '. Further, the tip of the coil reel 1-11 is guided out of the head holder 7 at the same time when the magnetic head element 3 is inserted into the element holding groove 12, and the coil reel 1-11 is completely inserted into the reed lead-out groove 18. Therefore, there is no risk of damage from the corners 15 of the spatula 1-polturf.

FIG. 4(E), +1'') is a plan view showing the configuration of core pieces that are partially different in shape and can be applied to the present invention.

In the figure, two core pieces 111' and +11'' have the same basic method, but one core I', 1+r
i is the front end wall surface 19' corresponding to the front end wall surface 19 of the magnetic core 113, and the magnetic core l I
Bottom surface 2 corresponding to groove bottom surface 20 of J glue 1 to lead-out groove 18
(+' is provided, and the external force core 1711+" is provided with a cut-through groove 22' corresponding to the cut-through groove 22 of the v':'f-tata of the magnetic core 113. Core J'', Iu' and 113'', 111''-Kawaguchi'-
By adhering and laminating in the order of 1' and 13'', a magnetic core 113 as shown in FIG. 4 (A1-(0)) is formed.

Note that the present invention is not limited to the one shown in the above-mentioned embodiment, and can be implemented with various modifications.

For example, in the second embodiment, tool 1 - outlet groove 18
An example is shown in which the cut-through groove 22 is provided on the back side of the magnetic core IH, but when the magnetic core 13 is sintered and molded as one piece, the cut-through groove 22 is provided on the side surface of the magnetic core IB. It may be provided.

Further, the shape of the cut-through groove 22 is not limited to a V-shape, but may be a U-shape or a combination of these shapes, but this may cause damage to the coil Lee 1-11. It is better to use a \1 character shape to avoid sharp corners.

Sarani,') l”-'r OUTi'i?718, 1
-JJ l) The method for each part of the 3FQ groove 22 may be determined as appropriate depending on the thickness of the coil 1-1-'I+, but if this thickness is, for example, 003 to 004, Fifth
In Figure +A), to), the width l of the tool 1-leading groove 18 is 015 words, the depth 11 is (1,3+nm, the cutout is 7Nt22 (,') width a, the ground width") .0 mm, , (approximately 1.2 mm is desirable from the viewpoint of workability.

As described in detail above, according to the present invention, it is easy to machine the parts, it is easy to lead out the coil lead to the outside in the assembly process to the direct air socket 1, and there is no need to worry about poor insulation or disconnection. It is possible to provide a magnetic spatula which can completely eliminate the possibility of such occurrence.

[Brief explanation of the drawing]

FIGS. 1(A) and (T3) are a front view of a conventional magnetic head assembly, and a cross-sectional view taken along the arrow line from FIG. 1(A) to FIG. 13) and (
0) is a right half-closed sectional view, a rear view of the lead lead-out groove, and a perspective view of the element to the magnetic spatula 1 in another conventional example, respectively.
Figure 1 (A+, o3i, (c) and (1)
) are a right half sectional view of a magnetic head assembly, a back view of one magnetic core piece, a top view of one magnetic core piece, and a three-dimensional view of the other magnetic core j1 in other conventional examples, respectively.
(zl'?lT diagram, example in Figure 4). (of , H, (11+ , (1・]) and (1
・゛) are all diagrams showing embodiments of the present invention, and are respectively a right side view showing the rear part of the element to the magnetic spatula 1, a top view thereof, a front view thereof, and a half body of the magnetic spatula 1-integrated body. 5 (A+ and U (11) are a plan view and a side view, respectively, for explaining the scale of the magnetic core piece 4. It is a figure. 1...magnetic core, 2...Hetsu l~coil 1
, (...Magnetic head element, 5...Magnetic spatula 1~.7 Hetholter 19...[Shinki 8tsu 1~
Aggregate, 11... Coil Lee-1-112...
・Element-J' holding groove, ]5...Corner of head holder,
17. Back side, 18...Lead lead-out groove, 19
... Front ψ; L1 wall surface, 20 ... Groove bottom surface, 2
1...Side wall, 22.1. Il l) 1I
fl groove, 23... one side on the front side, 2ti
l1ll b +・(l'l-, n. Figure 1 (A) Figure 2 (△) Figure 3 (△) (C) (D) Figure 4 (B) (E) C
F) = 65- Figure 5 (A)

Claims (4)

[Claims] (1) A magnetic spatula 1- which is constructed by winding one or both sides of a pair of magnetic cores (C coils to form a magnetic head element, and abutting the pair of magnetic head elements against each other via a magnetic cap). In the above (1 μm), there is a coil reel that extends from the rear end of the coil to the rear end of the magnetic core.
1 to 7J' at the rear of the rear end of the coil.
A magnetic spatula l-0 characterized in that it has a magnetic core having a cut-through hole in a direction intersecting the groove at a position. (2) The magnetic spatula l according to claim 1, wherein a groove for leading out to the roll reel 1 is provided on the back surface of the straight air core, which is positioned 17i1 with respect to the bed holster.
” 0 (3) The front end wall surface of the groove for leading to the coil Lee),
The magnetic head according to claim 2, wherein the magnetic head is formed on a ♀1 surface having a predetermined inclination angle. (4) The cut-through groove is substantially V-shaped, and one front side thereof is flush with the front end wall surface of the coil lead lead-out groove.
The magnetic head described in Section 1.