JPH0630911U - Magnetic head structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the height of the head part in which the magnetic head is mounted on the flexible printed circuit board that constitutes the magnetic head part, and to make the floppy disk drive thinner and the entire device smaller. The purpose is to obtain the desired magnetic head structure. [Structure] In a magnetic head portion 13 provided in a floppy disk drive, a magnetic head 12 is provided near a tip portion of a base film 31 holding a conductor 32 of a flexible printed circuit board 30 constituting the magnetic head portion 13. Forming a notch 34 having a predetermined interval so that the elastically held gimbal plate 19 is bridged,
The paste-like solder 37 is applied around the conductor pins 35 of the magnetic head 12 penetrating the gimbal plate 19.
A magnetic head structure characterized in that the conductor pins 35 are assembled to the cover film 33 of the flexible printed circuit board 30, and each conductor pin 35 is welded to the conductor 32 through the gap of the notch 34 of the base film 31. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a magnetic head structure provided in a floppy disk drive in an electronic device such as a personal computer and a word processor.

[0002]

[Prior art]

 Generally, a device body 1 such as a personal computer or a word processor is provided with a floppy disk drive 2 as shown in FIG. 3, and the floppy disk 3 can be attached to and detached from the floppy disk drive 2. ing.

That is, on the front surface of the floppy disk drive 2 provided in the device body 1, an access lamp 5 for detecting a state in which the insertion opening 2a of the floppy disk 3, the eject button 4, and the floppy disk 3 are inserted. Etc. are provided. Further, a wind cover 6 having a predetermined window 6a opened is slidably mounted on the front upper and lower surfaces of the floppy disk 3 in a lateral direction, and when the floppy disk 3 is mounted, a window opening / closing lever 8 to be described later is installed. As a result, the wind cover 6 slides in the lateral direction, and the head window 7a of the disk case 7 is opened in conformity with the window 6a of the wind cover 6.

As shown in the plan view of FIG. 4, the floppy disk drive 2 has a window opening / closing lever 8 for laterally sliding a wind cover 6 of the floppy disk 3 inserted into the holder 9 through the insertion opening 2a. , A rotary drum 10 for rotating and driving a disc housed in the disc case 7, a drive motor 11 for rotating the rotary drum 10 at a predetermined speed via a belt 14, and recording a predetermined signal on the upper and lower surfaces of the disc. A magnetic head unit 13 having a magnetic head 12 for reading out a recorded signal is also provided.

The magnetic head unit 13 has a structure in which a flexible printed circuit board 15 to which the magnetic head 12 is fixed is attached to a carriage 14, and the flexible printed circuit board 15 has a structure as shown in FIGS. 5 and 6. , A conductive foil attached to the upper surface of the insulating base film 16 is etched into a predetermined pattern shape to form a conductor 17, and a cover film 18 made of an insulating material is attached to the upper surface to form a predetermined shape. On the lower surface of the front end of the base film 16 of the flexible printed circuit board 15, a gimbal plate 19 elastically holding the magnetic head 12 is soldered 20 from a hole formed in the upper surface of the cover film 18. It is stuck. Here, the vicinity of the leading end of the cover film 18 is laterally cut by a predetermined distance b, and the flexible printed circuit board 15 to which the magnetic head 12 is fixed holds the movability.

The rear end of the carriage 14 to which the flexible printed circuit board 15 is attached is connected by a leaf spring 21, and the upper surface of the carriage 14 is pressed by a hook 22 a of one of the torsion springs 22 to cause a magnetic force. The head portion 13 is constantly pressed against the disk surface. In the magnetic head unit 13, with the floppy disk 3 mounted, a traveling member 25 engaged with a screw shaft 24 rotated by a motor 23 and a traveling guide member 27 slidably inserted into a guide shaft 26. With this, it is possible to move in the direction of arrow A along the head window 7a of the disk case 7.

[0007]

[Problems to be solved by the device]

 However, in the conventional magnetic head structure described above, the thickness h0 of the head portion in which the magnetic head is attached to the tip of the flexible printed circuit board is increased by the amount of soldering, and the entire floppy disk drive is thickened. It was an obstacle to miniaturization.

The present invention has been made to solve the above-mentioned problems of the conventional structure, and the height of the head portion in which the magnetic head is attached to the flexible printed circuit board constituting the magnetic head portion is made thin to make the floppy disk drive. The purpose is to obtain a magnetic head structure for the purpose of making the device thinner and making the entire device smaller.

[0009]

[Means for Solving the Problems]

 In order to achieve such an object, the magnetic head structure according to the present invention is a base in which a conductor of a flexible printed circuit board that constitutes the magnetic head is sandwiched in a magnetic head provided in a floppy disk drive. Form a notch near the leading edge of the film with a certain interval so that the gimbal plate that elastically holds the magnetic head is bridged, and surround each conductor pin of the magnetic head that penetrates the gimbal plate. It is characterized in that paste-like solder is applied, the conductor pins are assembled to the cover film of the flexible printed circuit board, and the conductor pins are welded to the conductors through the gaps in the notches of the base film.

[0010]

[Action]

 Based on such a configuration, in the magnetic head structure of the present invention, a cutout having a predetermined interval is left in the width direction in the vicinity of the tip of the base film that holds the conductors of the flexible print substrate. A notch is formed.Assemble the base film so that the gimbal plate that elastically holds the magnetic head is bridged between the notches, and insert a soldering iron etc. from the gap in the notch of the base film. Since each conductor pin of the magnetic head is configured to be welded to the conductor, the magnetic head structure can be made thin.

[0011]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a sectional view showing a main part of a magnetic head structure according to an embodiment of the present invention, and FIG. 2 is an enlarged side view of the main part of the magnetic head structure before assembly shown in FIG. The same parts corresponding to each other will be described with the same reference numerals.

First, as shown in FIG. 2, the flexible printed circuit board 30 constituting the magnetic head unit according to the present invention is formed by etching a conductive foil attached to the upper surface of a base film 31 made of an insulating material into a predetermined pattern. The conductor 32 is formed by the above, and the cover film 33 made of an insulator is attached to the upper surface of the conductor 32 and punched into a predetermined shape. Here, in the vicinity of the front end of the base film 31 holding the conductor 32 of the flexible printed circuit board 30, a notch 34 having a gap d is formed in the width direction, leaving a part of the jetty 31a. A gimbal plate 19 elastically holding the magnetic head 12 is bridged between the notches 34. Also, the cover film 33 attached to the upper surface of the flexible printed circuit board 30 is cut off at a distance b in the vicinity of the leading end thereof, so that the flexible printed circuit board 30 having the magnetic head 12 mounted thereon can be kept movably. ing.

On the other hand, from the magnetic head 12 attached to the gimbal plate 19, a plurality of signal conductor pins 35 are provided so as to penetrate through the gimbal plate 19, and a cover to which the conductor pins 35 are fixed. The film 33 is provided with a bottomed pin hole 36 penetrating the conductor 32 corresponding to each conductor pin 35.

Next, a case will be described in which the magnetic head 12 elastically held by the gimbal plate 19 is attached to the tip of the flexible printed circuit board 30 configured as described above. First, paste-like solder 37 is applied around the conductor pins 35 of the magnetic head 12 protruding through the gimbal plate 19, and then the conductor pins 35 are fitted into the pin holes 36 of the cover film 33. At the same time, the base film 31 is assembled so that the gimbal plate 19 elastically holding the magnetic head 12 is bridged between the cutout portions 34 of the base film 31, and the base film 31 is provided with a soldering iron or the like through the gap between the cutout portions 34. Then, each conductor pin 35 of the magnetic head 12 is welded to the conductor 32.

Therefore, in the embodiment according to the present invention, when the magnetic head 12 is attached to the tip of the flexible printed circuit board 30, it is not necessary to solder from the upper surface of the cover film 33 as in the conventional structure, and only that much. Since the thickness h1 of the head portion is reduced, the floppy disk drive can be made thinner and the entire device can be made smaller.

[0017]

[Effect of device]

 As described in detail above, the magnetic head structure according to the present invention covers the conductor pins after applying the paste solder around the conductor pins of the magnetic head protruding through the gimbal plate. Assemble so that the gimbal plate that elastically holds the magnetic head is bridged between the notches of the base film while fitting it into the pin holes of the film, and solder solder etc. from the gap of the notches of the base film. Since each conductor pin of the magnetic head is welded to the conductor via the magnetic head, when the magnetic head is attached to the tip of the flexible printed circuit board, it is not necessary to solder from the top surface of the cover film as in the conventional structure. As a result, the thickness of the head part becomes thinner, and the floppy disk drive can be made thinner and the entire device can be made smaller.

[Brief description of drawings]

FIG. 1 is a sectional view showing a main part of a magnetic head structure according to an embodiment of the present invention. , Fig. 2

FIG. 2 is an enlarged side view of a main part of the magnetic head unit of FIG. 1 before assembly.

FIG. 3 is a perspective view of essential parts showing a device body of a general personal computer, word processor or the like.

FIG. 4 is a plan view of a floppy disk drive.

5 is a sectional view taken along line 5-5 of FIG.

FIG. 6 is a perspective view of FIG.

[Explanation of symbols]

 2 Floppy disk drive 12 Magnetic head 13 Magnetic head portion 19 Gimbal plate 30 Flexible printed circuit board 31 Base film 32 Conductor 33 Cover film 34 Notch portion 35 Conductor pin 37 Solder

Claims (1)

[Scope of utility model registration request] 1. A gimbal in which a magnetic head is elastically held in the magnetic head portion provided in a floppy disk drive, in the vicinity of the front end portion of a base film holding a conductor of a flexible printed circuit board constituting the magnetic head portion. A notch having a predetermined interval is formed so as to bridge the plates, and paste-like solder is applied around the conductor pins of the magnetic head penetrating the gimbal plate, and the conductor pins are covered with a flexible printed circuit board. A magnetic head structure, characterized in that it is assembled to a film, and each conductor pin is welded to a conductor through a gap in a cutout portion of the base film.