JPH0935226A - Magnetic head device and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To wire a lead line extended form a coil by easily drawing out it onto the back of a gimbal, etc., in a magnetic head device supporting a slider and a core by a supporting member such as a gimbal. SOLUTION: Opening parts 22a and 22b having sufficient opening areas are formed on a gimbal 21. A slider 25 holding a core 26 is stuck to the lower surface in the middle part of the gimbal 21. Thereafter, bobbins 31, 33 on which coils 32, 34 are wound are inserted form the opening 22a and mounted on the core 26. At this time, the lead lines 32a, 34a are extended to the back side of the gimbal 21. Consequently, even without extending a flexible wiring board to the position of the gimbal 21, wiring to the coils is performed by the lead lines 32a, 34a. In the opening part 22b, a plate member 35 is stuck to the back surface of the slider 25. A pivot as the tilt fulcrum of the slider 25 is received by the plate member 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head device used in, for example, a floppy disk device, in which a core is held by a slider and the slider is supported by a supporting member such as a gimbal or a holder, and particularly, assembling and wiring. The present invention relates to a magnetic head device that facilitates work and a method for manufacturing the same.

[0002]

2. Description of the Related Art FIG. 8 shows the structure of a magnetic head device provided in a conventional floppy disk device. In a magnetic head device for a floppy disk device, those having the same shape face each other at symmetrical positions with a disk, which is a magnetic medium, interposed therebetween. The so-called side 1 side magnetic head device is supported by the gimbal, and the side 0 side magnetic head is supported by the plate. FIG. 8 is a sectional view showing a conventional magnetic head device on the side 1 side.

The slider 1 is made of a ceramic material or the like, and is a combination of slider halves 1a and 1b. The outer circumference of the slider 1 is surrounded by a shield case 2 made of a magnetic material. The slider 1 and the shield case 2 are fixed to a gimbal 3 which is a support member. A core 4 is held between the slider halves 1a and 1b. The core 4 forms a magnetic circuit for recording / reproducing and a magnetic circuit for erasing, and a bobbin 6 around which a coil 5 is wound is mounted on the core 4. Coil 5
There are two types of bobbins 6 for recording / reproducing and for erasing, and each is mounted on the core 4. A back core 7 is installed on the back of the core 4, and the core 4 and the back core 7 are fixed by a metal clip 8.

The wiring structure of this magnetic head device is as follows:
A plurality of metal terminals 9 are integrally fixed to the back of the bobbin 6, and the ends of the winding of the coil 5 are connected to the terminals 9. The terminal 9 projects from the hole formed in the gimbal 3 to the back side. The flexible wiring board 10 extends on the back side of the gimbal 3, the terminals 9 are inserted into the holes formed in the flexible wiring board 10, and the land portions formed on the flexible wiring board 10 and the terminals 9 are soldered. ing.

On the side 1 side, a pivot (not shown) is provided on the back side of the gimbal 3, and the elastic deformation of the gimbal 3 allows the slider 1 to incline in each direction with this pivot as a fulcrum. On the side 0 side, the slider 1 is arranged upside down in FIG. On the side 0 side, the slider 1 is fixed to a plate that does not require elastic deformation, and this plate is fixed to the holder.

[0006]

However, the conventional magnetic head device has the following problems. (1) In this magnetic head device, a combination of a slider 1, a core 4 and a bobbin 6 is a gimbal 3 (side 0).
On the side, the terminals 9 fixed to the plate) and integrally formed on the bobbin 6 are directly soldered to the flexible wiring board 10. Therefore, assembling the wiring path electrically connected to the coil 5 is relatively easy. However, the flexible wiring board 10 must be extended to the back of the gimbal 3 for wiring to the coil 5. As shown in FIG. 1, the slider 1
Etc. are installed at the tip of the holder. Therefore, if the flexible wiring board 10 is extended from the base end side of the holder to the position of the gimbal 3, the wiring path becomes long, the material cost of the flexible wiring board 10 increases, and the magnetic head. The cost of the device as a whole is high.

(2) If the lead wire extending from the coil 5 is directly extended to the back side of the gimbal 3 and then drawn as it is to the base end side of the holder shown in FIG.
It is not necessary to extend 0 to the position of the gimbal 3, and the material cost used for wiring can be reduced. However, in the conventional magnetic head device, the bobbin 6 is attached to the core 4 held by the slider 1 and the back core 7 is attached to the back of the core 4 and fixed to the gimbal 3. Therefore, immediately before fixing the slider 1 to the gimbal 3, it is necessary to insert the lead wire extending from the coil 5 into the small hole formed in the gimbal 3 and extend it to the back side. In the magnetic head device for the floppy disk device, the slider 1 and the gimbal 3 are small,
The diameters of the bobbin 6 and the coil 5 are also extremely small. Therefore, the work of passing the lead wire extending from the coil 5 through the small hole of the gimbal 3 is extremely complicated, and this complicated work is required, and the manufacturing cost is rather increased.

(3) As shown in FIG. 8, it is necessary to provide the gimbal 3 on the side 1 side and incline the slider 1 so as to follow the disk, but the gimbal is not required on the side 0 side. Therefore, conventionally, a plate that does not require elastic deformation is used instead of the gimbal 3, and after the slider 1 is fixed to this plate, the plate is fixed to the holder, and then the flexible wiring board 1
Wiring by 0 is performed. Therefore, not only does the material cost required for wiring also increase on the side 0 side, but since a plate that does not exhibit an elastic deformation function like the gimbal 3 is purposely provided as a component, the number of components increases, and the cost increases accordingly. Has become high.

The present invention is to solve the above-mentioned conventional problems, and it is possible to pull out the lead wire to the back side of the support member without performing the work of passing the lead wire extending from the coil through the small hole of the support member. And eliminates the need for a long flexible wiring board as in the past and facilitates wiring work.
Another object of the present invention is to provide a magnetic head device capable of easily stopping a lead wire drawn from a support member with respect to a holder, and a manufacturing method thereof.

Further, the present invention provides a magnetic head device and a method of manufacturing the same in which a lead wire extending from a coil can be pulled out to the back side of a supporting member, and a bobbin and a back core can be easily mounted. The purpose is to do.

A further object of the present invention is to provide a magnetic head device and a method of manufacturing the same in which it is not necessary to provide a plate on the side 0 side, the number of parts can be reduced, and the manufacturing cost can be reduced. .

[0012]

SUMMARY OF THE INVENTION According to the present invention, a core, a slider for holding the core, a bobbin mounted on the core and a coil wound on the bobbin, and the slider opposed to a portion facing a magnetic medium are provided. In a magnetic head device having a support member supported from the side, an opening portion into which the bobbin can be inserted is formed in the support member, and a lead wire that is electrically connected to the coil is provided on the back side of the support member from the opening portion. It is characterized by being drawn to. In the case where the back core is joined to the core on the side opposite to the portion facing the magnetic medium, the opening has an opening area into which both the bobbin and the back core can be inserted.

In the side 1 side magnetic head device for a floppy disk device, the support member is a gimbal that elastically supports the slider, and a plate member located in an opening formed in the gimbal is fixed to the slider. Then, the pivot that serves as the tilt fulcrum of the slider comes into contact with the plate member. In this case, in the configuration having the back core,
The board is fixed after the bobbin and the back core are inserted through the opening formed in the gimbal.

In the magnetic head device on the side 0 side of the floppy disk device, the support member is a holder that moves along the magnetic medium, and the slider is directly fixed to this holder. Therefore, an opening for inserting the bobbin and the back core from the back side is directly formed in the holder.

In the above, it is preferable that the lead wire extending to the back side of the support member is fixed to an adhesive portion provided on the wiring path, and more preferably, the flexible wiring substrate is formed by the adhesive portion. The lead wire that is fixed and fixed to the adhesive portion is soldered to the conductive pattern of the flexible wiring board.

Further, in the method of manufacturing the magnetic head device of the present invention, the slider holding the core is fixed to the supporting member, the bobbin wound with the coil is inserted through the opening formed in the supporting member, and the coil is attached to the coil. The bobbin is mounted on the core in a state in which a conducting lead wire is pulled out to the back side of the support member. In this case, in the case where the back core is connected to the core, the bobbin is inserted through the opening and then the back core is inserted and fixed to the core.

In the method of manufacturing the magnetic head device on the side 1 side of the floppy disk device, the support member is a gimbal that elastically supports the slider, and the bobbin is mounted on the core, and the bobbin is mounted in the opening formed in the gimbal. The plate member is fixed to the slider, and then the gimbal is fixed to the holder that moves along the magnetic medium, and at this time, the plate member is brought into contact with the pivot serving as the tilt fulcrum of the slider. In the magnetic head device on the side 0 side, the support member is the holder itself that moves along the magnetic medium.

[0018]

In the present invention, the slider holding the core is fixed to the support member. In the magnetic head device on the side 1 side of the floppy disk device, the supporting member is a gimbal, and in the magnetic head device on the side 0 side, the supporting member is the holder itself for moving the magnetic head along the magnetic medium (disk). . Alternatively, the support member may be a plate fixed to the holder. If the structure does not use a plate, the number of parts can be reduced.

An opening is formed in the gimbal, the holder or the plate which is a supporting member. In the assembling step, after the core is fixed to the support member, a bobbin is inserted into the opening from the back side of the support member and the bobbin is mounted on the core. At this time, the lead wire extending from the coil around which the bobbin is wound is extended to the back side of the support member. Therefore, the work of passing the lead wire through the small hole of the support member becomes unnecessary, and when the bobbin is attached to the core, the lead wire is pulled out to the back side of the support member.

In the magnetic head device for the floppy disk device, the back core is attached to the core on the side opposite to the portion facing the magnetic medium. The back core is fixed after the bobbin is attached to the core. Therefore, after inserting the bobbin through the opening of the support member and mounting it on the core, the back core is inserted through the opening and the back core is fixed to the back of the core. The back core passes through the opening from the back side of the support member and is fixed to the core,
Rather than using the clip 8 as in the conventional example shown in FIG.
The step of adhesively fixing the back core to the rear end surface of the core is easier. Further, in order to securely bond the back core to the rear end surface of the core, it is preferable to form a recess in the bobbin and bond the back core and the rear end of the core with an adhesive that collects in the recess.

In the magnetic head device on the side 1 side of the floppy disk device, the back surface of the gimbal or slider is conventionally received by the pivot. In the present invention, since the opening is formed in the gimbal and the slider for inserting the bobbin, it is preferable to fix the plate member to the slider in the opening of the gimbal and use the plate member as the pivot receiving portion.

Through the above steps, the lead wire extending from the coil is drawn out to the back side of the support member that supports the slider. The lead wire is adhered to the adhesive portion and stopped in the wiring path of the holder or the like. This adhesive part is, for example, a double-sided adhesive tape. It is also possible to adhesively fix both the flexible wiring board and the lead wire to the adhesive portion such as the double-sided adhesive tape, and solder the tip of the fixed lead wire to the land portion of the flexible wiring board as it is. .

In the present invention, since the lead wire extending from the coil is drawn out, the flexible wiring board can be shortened, and the lead wire is stopped by the adhesive portion, so that the lead wire can be easily treated. Moreover, since the lead wire is restrained by the adhesive portion, it does not hit other parts.

[0024]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing the overall structure of a head unit for a floppy disk device as an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing the structure of a magnetic head device on the side 1 side of the head unit shown in FIG. 3 is a plan view of the magnetic head device on the side 1 side, and FIG. 4 is IV-I of FIG.
5 is a sectional view taken along line VV in FIG. 3, FIG. 6 is a partial sectional view showing a wiring path of the magnetic head device on the side 1 side, and FIG. 7 is a magnetic head device on the side 0 side. It is a fragmentary sectional view showing the wiring route.

The head unit A shown in FIG. 1 is supported by a guide shaft 11 so as to be movable in the left and right directions in the drawing.
In addition, the head unit A is driven by a linear drive mechanism (not shown).
Is driven in the horizontal direction (X direction) in the figure. The floppy disk D, which is a magnetic medium, is rotated about the central axis O. The head unit A is moved in the radial direction of the disk D by the linear drive mechanism.

A lower holder 12 is provided in the head unit A, and a magnetic head device H0 on the side 0 side is provided at the tip of the lower holder 12. Lower holder 12
An upper holder 13 is provided on the top. The upper holder 13 is connected to the lower holder 12 via a leaf spring 14,
Due to the elastic deformation of the leaf spring 14, the upper holder 13 is
The lower holder 12 is rotatable up and down in the drawing. The side 1 side magnetic head device H1 is provided at the tip of the upper holder 13. The upper holder 13 is urged downward by a spring 15 in the drawing. Due to this biasing force, both sides of the disk D are held between the side 0 side magnetic head device H0 and the side 1 side magnetic head device H1. In addition, the upper holder 13 is provided by a retracting mechanism (not shown).
When is lifted, the holding of the disk D by the magnetic head devices H0 and H1 is released.

The magnetic head device H1 on the side 1 side is provided with a gimbal 21 as a support member. The gimbal 21 is made of a thin leaf spring material such as phosphor bronze plate or stainless steel. The central portion of the gimbal 21 is a support region 21a, and slits 21b, 21b separated in the Y direction are formed on the outer periphery of the support region 21a.
The support region 21a can be tilted around the X axis by 1b and 21b. Further, slits 21c, 21c separated in the X direction are formed on the outer periphery of the support region 21a so that the support region 21a can be tilted about the Y axis. Further, small holes 21d for mounting are formed at the four corners of the gimbal 21. In the support region 21a of the gimbal 21, a rectangular first opening portion 22a extending in the Y direction is formed with a constant width, and a narrow width extending in the X direction across the first opening portion 22a. The second opening 22b is formed.

A slider 25 is adhesively fixed to the support area 21a. The slider 25 is a slider half 25.
The slider halves 25a and 25b are made of a non-magnetic ceramic material or the like. A core 26 is held between the two slider halves 25a and 25b. As shown in FIG. 5, the core 26 includes a recording / reproducing core unit 26A and an erasing core unit 26B.
And both core portions 26A and 26B are S
They are joined by a non-magnetic material 27 such as iO ₂ . The recording / reproducing core unit 26A includes an L-type core 26a and an I-type core 2
6b and record at the joint of both cores 26a and 26b.
A reproduction gap G1 is formed. Erase core unit 26
B has a symmetrical shape to this, has an L-shaped core 26c and an I-shaped core 26d, and an erasing gap G2 is formed at the joint between the two cores 26c and 26d. Each core is made of a magnetic material such as ferrite.

A back core 28 is provided on the back of the core 26. As shown in FIG. 5, the back core 28 includes core halves 28a and 28a whose central portions are joined by a nonmagnetic material 29.
b. In this embodiment, the back core 28
Are bonded and fixed to the rear end surface of the core 26 by adhesion. The core half body 28a includes the L-shaped core 26a and the I-shaped core 2a.
6b is joined to the rear end surface of the recording / reproducing core portion 26A to form a closed magnetic circuit. Core half 28b
Are joined to the rear end surfaces of the L-shaped core 26c and the I-shaped core 26d, thereby forming a closed magnetic circuit of the erase core portion 26B. A shield case 23 is provided on the outer circumference of the slider 25. The shield case 23 is formed of a magnetic material such as ferrite in a frame shape. The slider 25 and the shield case 23 around it
Are bonded and fixed to the support region 21 a of the gimbal 21.

A bobbin 31 is mounted on the L-shaped core 26a. A recording / reproducing coil 32 is wound around the outer circumference of the bobbin 31. A bobbin 33 is attached to the L-shaped core 26c. An erasing coil 34 is wound around the bobbin 33. Each bobbin 31 and 33 in this embodiment is not provided with a terminal as indicated by reference numeral 9 in the prior art example of FIG. 8, and the lead wire 32a extending from the coil 32 is directly outside the bobbin 31. Similarly, the lead wire 34a extending from the coil 34 also extends to the outside of the bobbin 33 as it is. Each bobbin 31
Square holes 33a and 33a, through which the L-shaped cores 26a and 26c are respectively inserted, are formed in the holes 33 and 33, and the bobbin 31 and 33 are provided with a back side (upper side in the drawing).
On the end surface of the above, concave portions 31b and 33b are formed, which are pools of an adhesive agent for bonding the back core 28.

On the back side of the back core 28,
A plate material 35 is provided. The plate member 35 is adhesively fixed to the rear surface (upper surface in the drawing) of each of the slider halves 25a and 25b in the second opening 22b of the gimbal 21.
When the magnetic head H1 on the side 1 side is attached to the tip of the upper holder 13, as shown in FIG.
The pivot 16 formed in 3 contacts the upper surface of the plate member 35. As shown in FIG. 4, the plate member 35 is formed by stacking two thin metal plates so as to exhibit rigidity. Further, in FIG. 3, the pivot 16 that hits the plate member 35 is indicated by a circular broken line.

Next, a method of manufacturing the magnetic head device H1 will be described. The core 26 is formed by slicing a block body. When thinly sliced, L-shaped core 26
a, I-type core 26b, L-type core 26c, I-type core 26d
Are joined in the state shown in FIG. The core 26 is sandwiched between the slider halves 25a and 25b, positioned and joined to each other. Next, the slider 25 and the shield case 23 are positioned on the lower surface of the support region 21a of the gimbal 21, which is a support member, and are fixed by, for example, a UV curable adhesive and / or a thermosetting adhesive.

The first opening 22a formed in the support region 21a of the gimbal 21 has an opening area through which the bobbins 31 and 33 and the back core 28 can pass, and the second opening 22b. Has an opening area through which the plate member 35 can pass. After the slider 25 and the shield case 23 are bonded and fixed to the support area 21a of the gimbal 21, the bobbins 31 and 33 around which the coils 32 and 34 are wound are attached to the first opening 2 from the back side of the gimbal 21.
Insert into 2a. The bobbins 31 and 33 have openings 22a.
After passing through the inside, it is inserted into the space 25c inside the slider 25, and attached to each L-shaped core 26a and 26c. At this time, the lead wire 32a extending from the coil 32 and the lead wire 34a extending from the coil 34 are left pulled out to the back side of the gimbal 21 (upper side in FIG. 2).

Next, the back core 28 is inserted into the first opening 22a from the back side of the gimbal 21, and the core half body 28a is connected to the L-shaped core 26a and the I-shaped core 2 as shown in FIG.
6b is joined to the rear end surface of the core half body 28b to form the L-shaped core 2
6c is joined to the rear end surface of the I-shaped core 26d. The back core 28 is positioned and installed by a jig with respect to the rear end surface of the core 26. After mounting the back core 28 or before mounting the back core 28, the recess 31 formed in the back of the bobbins 31 and 33.
UV curable adhesive is filled in b and 33b, and when the back core 28 is positioned, ultraviolet rays are irradiated to bond and fix the back core 28.

Next, the plate member 35 is positioned and joined to the back surfaces of the slider halves 25a and 25b in the second opening 22b, and this is also adhered and fixed by a UV curable adhesive or the like. Then, the slider 25 and other components fixed to the gimbal 21 are fixed to the tip of the upper holder 13. In this fixing operation, the small holes 21d formed at the four corners of the gimbal 21 are fitted to the protrusions formed at the tip of the upper holder 13. The upper holder 13 is made of synthetic resin, and the protrusion is formed integrally with this. The small hole 2
The tip of the protrusion fitted to 1d is heated and melted, whereby the gimbal 21 is welded and caulked to the tip of the upper holder 13. In FIG. 1, this welding and caulking portion is indicated by reference numeral (a).

When the gimbal 21 is fixed to the tip of the upper holder 13, the tip of the pivot 16 formed integrally with the upper holder 13 (the apex of the spherical pivot portion).
Contacts the portion of the plate 35 indicated by the broken line circle in FIG. Therefore, the slider 25 is supported in an inclinable state with the tip of the pivot 16 as a fulcrum.
That is, in this embodiment, in order to insert the bobbins 31 and 33 through the gimbal 21, the opening 22a having a large opening area is formed in the gimbal 21, and the bobbins 31 and 33 are also inserted in the slider 25. Space to do 2
5c (see FIG. 2) is formed. Therefore, the pivot 16 faces the position where it is disengaged from the gimbal 21 and the core 26. However, the plate material 3 is placed in these openings.
Since the plate 5 is fixed, the plate member 35 can receive the pivot 16, and the slider 25 can move the pivot 1.
It is possible to incline with 6 as a fulcrum.

As described above, the lead wires 32a and 34a extending from the coils 32 and 34 wound around the bobbins 31 and 33, respectively.
Extends from the opening 22a to the back side of the gimbal 21. As shown in FIG. 6, the lead wires 32a, 34a
Is adhesively supported and stopped by an adhesive portion 37 provided on the back surface of the gimbal 21. The adhesive portion 37 is a double-sided adhesive tape or the like.

Furthermore, the lower surface 13 of the middle part of the upper holder 13
Similarly, an adhesive section (double-sided adhesive tape) 38 is attached to a, and the flexible wiring board 39 extending from the base end side of the upper holder 13 is adhered to the adhesive section 38 and stopped. Further, the tip portions of the lead wires 32a and 34a have an adhesive portion 38 for fixing the flexible wiring substrate 39.
To the lead wires 32a, 34a.
Is soldered to the land portion 39a at the tip of the flexible wiring board 39.

In this way, the windings of the magnetic head device H1 extend from the coils 32 and 34 as they are, and the lead wire 32 is formed.
a and 34a, and the lead wires 32a and 34a
But extends to the middle part of the upper holder 13. Therefore, the flexible wiring board 39 does not need to extend to the position of the gimbal 21 of the magnetic head device H1, so that the flexible wiring board 39 can be shortened and the cost of parts can be reduced. In addition, the lead wires 32 a and 34 a are attached to the adhesive parts 37.
And 38 so that the leads 32a, 34
a does not touch other places. Further lead wire 32
Since the tip portions of a and 34a are stopped by the same adhesive portion 38 that stops the flexible wiring board 39 and soldered to the land portion 39a, the lead wires 32a and 34a at the time of soldering
Positioning a is easy.

Next, the structure of the magnetic head device H0 on the side 0 side will be described with reference to FIG. The magnetic head device H0 on the side 0 side has the same structure as the magnetic head device H1 on the side 1 side shown in FIGS.
1 and H0 are installed in a vertically symmetrical direction. However, unlike the magnetic head device H1 on the side 1 side, the magnetic head device H0 on the side 0 side does not have the gimbal 21 and the plate member 35.

As shown in FIG. 7, in the magnetic head device H0 on the side 0 side, unlike the conventional case, a plate for supporting the slider 25 is not used, and the lower holder 12 supports the slider 25 for directly supporting it. It becomes a member. A substantially rectangular shallow recess 12a is formed on the upper surface of the lower holder 12 as the supporting member, and an opening 12b penetrating the rear side of the lower holder 12 is formed in the recess 12a. The opening 12b is formed by the gimbal 2 shown in FIG.
The first opening 22a has the same shape and the same opening area.

In the method of manufacturing the magnetic head device H0 on the side 0 side of this embodiment, the L-shaped core 26 constituting the core 26 is formed.
a, I-type core 26b, L-type core 26c, I-type core 26d
Is held by the slider halves 25a and 25b,
The lower holder 12 is positioned and bonded and fixed in the recess 12a on the upper surface of the front portion of the lower holder 12. After that, bobbins 31 and 33
The space 25 of the slider 25 passes through the inside of the opening 12b from the back side (lower side in FIG. 7) of the lower holder 12 which is a supporting member.
c and insert each bobbin 31 and 33 into the L-shaped core 26a.
And 26c. After that, the back core 28 is inserted through the opening 12b, and the L-shaped core 26a and the I-shaped core 26 are inserted.
b, the L-shaped core 26c, and the I-shaped core 26d are positioned and installed on the rear end surfaces of the cores, respectively, and the bobbin 31 and the recessed portion 31
The UV curable adhesive filled in b and 33b is cured to bond and fix the back core 28 to the back of the core 26.

When the bobbins 31 and 33 are inserted from the opening 12b, the lead wires 32a and 34a extending from the coils 32 and 34 are still pulled out to the back surface of the lower holder 12 (downward in FIG. 7). . The lead wires 32a and 34a drawn out from the opening 12b are stopped by an adhesive portion (double-sided adhesive tape) 41 fixed to the lower surface 12c of the lower holder 12. In addition, the lower surface 12 of the lower holder 12
A flexible wiring board 43 extending from the base end side is adhesively fixed to c by an adhesive portion (double-sided adhesive tape) 42. The ends of the lead wires 32a and 34a are attached to the adhesive portion 4
After being stopped at 2, it is soldered to the land portion 43a of the flexible wiring board 43.

In the magnetic head device H0 on the side 0 side as well, since the bobbins 31 and 33 and the back core 28 are inserted from the openings 12b formed in the lower holder 12 which is a supporting member, they extend from the coils 32 and 34. It is not necessary to pass the lead wires 32a and 34a through the holes of the lower holder 12, and the lead wires 32a and 34a extend to the back side of the lower holder 12 when the assembly is completed. These lead wires 32a, 34
Since a is extended in the middle part of the lower holder 12, it is not necessary to extend the flexible wiring board 43 to the back of the slider 25 for a long time.

Further, as shown in FIG. 7, since the core 26 is directly fixed to the lower holder 12 and the conventional plate is not provided, the number of parts can be reduced. In FIG. 7, a plate that supports the core 26 may be used and this plate may be fixed to the lower holder 12. In this case, an opening is formed in the plate, and the bobbin and the back core are mounted from the back side of the plate. Although the present invention has been described with respect to a magnetic head device for a floppy disk device, any magnetic head device having a structure in which a slider is fixed to a support member and a bobbin is attached to a core can be used for any purpose. However, it can be implemented.

[0046]

As described above, according to the present invention, it is not necessary to pass the lead wire through the small hole of the supporting member such as the gimbal that supports the core from the back side, and the lead wire can be extended to the back side of the supporting member. . Further, in the assembling work, the bobbin, the back core, and the like may be inserted from the opening formed in the support member, and the work is easy. Moreover, when the bobbin is inserted through the opening, the lead wire can be pulled out to the back side of the support member.

Since the lead wire from the coil wound around the bobbin can be easily pulled out to the back side of the supporting member,
Unlike the conventional case, it is not necessary to extend the flexible wiring board to the position of a supporting member such as a gimbal, and the material cost for forming the wiring path can be reduced. Further, when the lead wire is pulled out to the back side of the support member, the lead wire can be clamped easily and surely by stopping the lead wire with the adhesive member. Further, by fixing both the flexible wiring board and the lead wire to the same adhesive portion and soldering the tip of the lead wire to the flexible wiring board, the work of soldering the lead wire and the flexible wiring board can be facilitated.

When a gimbal is used, a plate member is fixed to the core within the opening of the gimbal, and a pivot member is received by the plate member so that a sufficiently wide opening for inserting the bobbin is formed in the gimbal and the core. Even if it does, the slider can be surely supported by the pivot.

Also, without using a gimbal, for example, side 0
In the magnetic head device on the side, if the plate is not used and the core is directly bonded to the holder, the material cost of the plate can be reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a head unit for a floppy disk device as one embodiment of the present invention,

2 is an exploded perspective view showing a side 1 side magnetic head device provided in the head unit shown in FIG. 1;

FIG. 3 is a plan view of a magnetic head device on the side 1 side;

4 is a sectional view taken along line IV-IV of FIG.

5 is a cross-sectional view taken along the line VV of FIG. 3 (however, the slider is omitted),

FIG. 6 is a partial cross-sectional view showing the wiring structure of the magnetic head device on the side 1 side;

FIG. 7 is a partial cross-sectional view showing a structure of a magnetic head device on the side 0 side and a wiring route thereof.

FIG. 8 is a sectional view showing the structure of a conventional magnetic head device on the side 1 side;

[Explanation of symbols]

 A Head unit G1, G2 Gap 12 Lower holder 12b Opening 13 Upper holder 16 Pivot 21 Gimbal 22a, 22b Opening 25 Slider 26 Core 28 Back core 31, 33 Bobbin 32, 34 Coil 32a, 34a Lead wire 37, 38, 41 , 42 Adhesive part 39, 43 Flexible wiring board

Claims (7)

[Claims] 1. A core, a slider for holding the core, a bobbin mounted on the core and a coil wound on the bobbin, and a support member for supporting the slider from a side opposite to a portion facing a magnetic medium. In the magnetic head device having the above, the support member is formed with an opening into which the bobbin can be inserted, and a lead wire that is electrically connected to the coil is drawn out from the opening to the back side of the support member. And magnetic head device. 2. The support member is a gimbal that elastically supports the slider, and a plate member located in an opening formed in the gimbal is fixed to the slider, and a pivot serving as an inclined fulcrum of the slider is attached to the plate member. The magnetic head device according to claim 1, which is in contact with the magnetic head device. 3. The magnetic head device according to claim 1, wherein the support member is a holder that moves along the magnetic medium, and the slider is directly fixed to the holder. 4. The magnetic head device according to claim 1, wherein the lead wire extending to the back surface side of the support member is fixed to an adhesive portion provided on a wiring path. 5. The magnetic head device according to claim 4, wherein the flexible wiring substrate is fixed by the adhesive portion, and the lead wire fixed to the adhesive portion is soldered to the conductive pattern of the flexible wiring substrate. 6. A slider holding a core is fixed to a support member, a bobbin wound with a coil is inserted through an opening formed in the support member, and a lead wire conducting to the coil is directed to the back side of the support member. A method of manufacturing a magnetic head device, wherein the bobbin is mounted on the core in a pulled-out state. 7. The support member is a gimbal that elastically supports the slider, the bobbin is attached to the core, the plate member is fixed to the slider within the opening formed in the gimbal, and then the gimbal is applied to the magnetic medium. 7. The method of manufacturing a magnetic head device according to claim 6, wherein the plate member is fixed to a holder that moves along the plate, and at this time, the plate member is brought into contact with a pivot serving as a tilt fulcrum of the slider.