JPH026127B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a magnetic head device that can be used, for example, as a magnetic head for a floppy disk device.

(Prior art) For example, magnetic head devices used in floppy disk devices include those in which a bobbin is pre-wound and then fitted onto a core, and those in which the core is directly wound. . FIGS. 6 and 7 show an example of the latter, in which one end 2a of a flexible printed board 2 is glued to a gimbal spring 1 serving as a magnetic head holder, and the gimbal spring 1 is attached to the core 3 of the magnetic head. The magnetic head is fixed to the gimbal spring 1 by penetrating the gimbal spring 1, and the winding 4 is applied to the core 3 passing through the gimbal spring 1, and the end of each winding 4 is attached to the printed pattern on one end of the printed board 2. It is made by soldering. The printed pattern on the printed board 2 is made of a metal thin film, and adhesive is applied to the soldered portion 5 of each winding 4 to the printed board 2.

(Problems to be Solved by the Invention) According to such conventional technology, it is necessary to solder the end of the winding to the printed board, and furthermore,
Since the object to be soldered is a fine wire and covered, the workability of soldering is poor. Furthermore, since the soldering work is a manual work and the price of the flexible printed board is high, this is one of the factors contributing to the high cost of the magnetic head device.

SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic head device that eliminates the need for soldering, does not require the use of a flexible printed board, and allows the winding and its ends to be drawn out almost automatically.

(Means for Solving the Problems) The present invention provides a magnetic head device in which a magnetic head is fixed to a magnetic head holder with its core protruding, and a winding is applied to the protruding core portion. is pulled out by a predetermined length, the pulled-out portion is held by a film, the end of the pulled-out portion is used as a connecting portion with the outside, and one end of the film is fixed to the holder.

(Function) A winding is applied to the core portion protruding from the magnetic head holder, and the ends of each winding are pulled out by a predetermined length. The drawn-out portion of each winding is held at one end by a film fixed to the holder. The end of the lead-out portion of each winding is used as a connecting portion with the outside, and erasing signals, recording signals, reproduction signals, etc. are input/output between each winding and an external circuit through this connecting portion.

(Embodiment) In FIGS. 1 to 3, a magnetic head 16 is fixed to a gimbal spring 11 as a magnetic head holder by passing the gimbal spring 11 through a core 13 thereof. A core 13 protruding from one side of the gimbal spring 11 is provided with a winding 14 . The winding 14 consists of an erasing winding wound around one core 13 in one stage, and a reproduction winding and a recording winding wound around another core 13 in two stages. Back bars 16, 17 are fixed to each core. The end of each winding is pulled out by a predetermined length.
Further, a ground wire 18 whose one end is soldered to the gimbal spring 11 is also drawn out parallel to the end of each winding. Reference numeral 19 indicates the starting end of the winding applied to the erasing core, 20 indicates the ending end thereof, and 21
22 is the winding start end of the lower end wire, 23 is the winding start end of the upper winding, and 24 is the winding end end of the lower winding. Among these, the central three ends 20, 21,
22 serves as a common terminal for each coil 14 and is electrically connected together. The end of each winding is connected to a predetermined erasing circuit, reproducing circuit, recording circuit, etc.
It is used for inputting and outputting a predetermined signal to and from 4. The arrangement order of the ends of each winding differs depending on whether it is an upper head or a lower head in the case of a floppy disk device, for example, and also depends on various other conditions.

The end portions of each of the windings 14 pulled out in this manner are collectively held by the flexible film 12, except for the connection terminals to the outside. The film 12 is coated with an adhesive on one side, and is held together by pressing this adhesive side against the lead-out portions of the windings arranged in parallel. One end 12a of the film 12 is adhered to the gimbal spring 11 in such a way that the drawn-out portion of each winding is pressed against the gimbal spring 11. A protective material 26 such as paper is adhered to a portion of the adhesive surface of the film 12 that straddles the elastic portion around the gimbal spring 11 in order to prevent the film 12 from being adhered to the elastic portion.

To manufacture the magnetic head device according to the embodiment of the present invention, the following automatic method can be used. For example, a winding machine is attached to a device that can position and move, such as a Cartesian coordinate robot, and as shown in FIG.
Winding is performed using a jig having guide pins 30, 31 positioned according to the length and width of the film 12 to be used later, and five wire hooking pins 32.
More specifically, first, one end 33 of the wire for grounding the gimbal spring is soldered to the gimbal spring, and then the winding machine is moved and the pins 30 and 31 are used as guides to pull out a predetermined length, and the two pins 3
After winding the wire over 2 and 32 times, the winding machine is returned to the position of the magnetic head and an erasing winding is applied to one core. When this winding is completed, the end of the winding is pulled out for a predetermined length, hung on the central pin of the five pins 32, and then returned to the position of the magnetic head again to apply the recording winding to the other cores. When this winding is completed, the end of the winding is pulled out for a predetermined length, hung on the center of the five pins 32 and the pin next to it, and then returned to the magnetic head position and reproduced on the same core as the recording winding. Apply winding for use. When this winding is completed, the end of the winding is pulled out by a predetermined length and hung on the outermost pin of the five pins 32 to finish the winding. After winding, pin 32
The adhesive-coated surface of the film 12 for protecting the wire is pressed against the wire except for the wire part hung on the wire, and the drawn-out part of the wire is adhered to the film 12 to protect the drawn-out part of the wire. It is also possible to use two films 12 to adhere the lead-out portion of the wire rod in a sandwich-like pattern. However, if the lead-out portion of the wire rod is to be adhered from only one side using one film, the protective material 26 may be attached as described above. This prevents adhesion to the elastic portion of the gimbal spring 11. The starting portion of each winding and the leading end of the film are hardened by applying adhesive to the gimbal spring 11, as indicated by reference numeral 34 in FIG. 4, to prevent wire breakage. Next, the wire rod portions straddled over two of the five pins 32 are cut. After that, remove it from the jig and the winding work will be completed. The end of each drawer is connected to each predetermined circuit.

FIG. 5 shows another embodiment of the invention. This embodiment differs from the previous embodiment in that the drawn-out portions of each winding are twisted together and held in the twisted state by a film 12. For example, in the winding method described with reference to FIG. 4, after the winding work of each winding and the work of pulling out the ends of the windings are completed, and before holding the windings with the film 12, This is done by rotating the jig portion having the pin 32 several times.

If each drawer part is twisted and then held with a film as in the embodiment shown in FIG. 5, each drawer part is integrally processed and the strength is increased.

In addition, in FIG. 5, the reference numeral 35 indicates a terminal block, and the terminal block 35 has five terminals 3.
6, 37, 38, 39, 40, and among the ends of the drawn-out part after winding is completed, the terminal 18 is connected to the terminal 36, the terminal 19 is connected to the terminal 37, the end 20,
21 and 22 are connected to the terminal 38, and the end portion 23 is connected to the terminal 39.
In addition, the ends 24 are connected to terminals 40, respectively. These terminals 36, 37, 38, 39, 40
Each winding 14 is connected to a predetermined circuit portion through.

The magnetic head device of the present invention can be used not only in floppy disk devices but also in various magnetic recording and reproducing devices. The magnetic head holder is not limited to gimbal springs.

(Effects of the Invention) According to the present invention, since the lead-out portion at the end of each winding is used as a connection portion with the outside, and a portion of the film is fixed to the magnetic head holder, soldering is not required at minute portions. No attachment work is required, workability is improved, manufacturing automation is easy, and low-cost magnetic head devices can be provided through mass production.
Furthermore, since there is no need to use an expensive flexible printed board, it is possible to rationalize the number of parts used.

[Brief explanation of drawings]

Figure 1 is a front view showing one embodiment of the present invention, Figure 2 is a front view showing one embodiment of the present invention;
FIG. 3 is a side view of the same as above, FIG. 3 is a perspective view of same as above, FIG. 4 is a front view for explaining an example of the manufacturing method of the magnetic head according to the above embodiment, and FIG. 5 is a view of another embodiment of the present invention. 6 is a perspective view showing an example of a conventional magnetic head device, and FIG. 7 is a side view of the same. 11...Magnetic head, 12...Film, 13
... Core, 14 ... Winding, 18, 19, 20, 2
1, 22, 23, 24... connection part with the outside.

Claims (1)

[Claims] 1. In a magnetic head device in which a magnetic head is fixed to a magnetic head holder with its core protruding, and a wire is wound around the protruding core, the end of each winding is pulled out by a predetermined length, A magnetic head device comprising: a film holding the pull-out portion; an end of the pull-out portion serving as a connection portion with the outside; and one end of the film being fixed to the holder. 2. The magnetic head device according to claim 1, wherein the film has an adhesive on one side that holds the drawn-out portion of the winding.