JPS62103819A - Magnetic head - Google Patents

Abstract

PURPOSE:To facilitate connecting processing of a coil terminal and to improve the performance by supporting the gimbals plate by a pivot, having a land for connecting the coil terminal by a flexible wiring substrate, forming a conductor pattern and pulling out in the carriage base edge direction. CONSTITUTION:A head core 10 is a laminated structure to arrange a chip for elimination at both sides of the chip for recording and reproducing, at both sides of a sliding surface side, non-magnetic sliders 20 and 22 are fitted and bonded to a gimbals plate 24 with sliders 20 and 22 so that the media sliding surface can be protruded a little. The gimbals plate 24 is fitted to the carriage at the circumference and pivotly supported by a pin at a supporting point P. At the opposite side of the slider fitting surface of the gimbals plate 24, a flexible wiring substrate 26 is bonded, a flexible wiring substrate 26 has a land 28a for connecting the coil terminal, a conductor pattern 28b is formed so as to detour a central aperture part 30 and the substrate is constructed to be pulled out to the carriage base edge side. Thus, the connecting work is made very simple and the performance of the pivot support is improved.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a magnetic head using a gimbal plate, and more specifically, the present invention relates to a magnetic head using a gimbal plate, and more specifically, the terminal connection process of a coil attached to the head core is performed using a gimbal plate fulcrum with respect to the head core. This invention relates to a magnetic head configured to operate on opposite sides.

[Prior Art] In a flexible magnetic disk drive, a disc-shaped magnetic recording medium (hereinafter simply referred to as "medium") is rotated and information is recorded and reproduced by contacting the magnetic node with the disc-shaped magnetic recording medium (hereinafter simply referred to as "medium"). In order to guarantee the performance, a tunnel erase type or straddle erase type digital magnetic head is usually used.

These magnetic heads have a structure in which non-magnetic sliders are arranged on both sides of a head core, and the sliders are adhered to a gimbal plate so that the medium sliding surface slightly protrudes, and the periphery of the gimbal plate is supported by a carriage. The fulcrum of the gimbal plate is pivotably supported by a pin protruding from the carriage, so that good contact with the medium can be maintained.

An example of the prior art is shown in FIG. 3. A head core 10 is equipped with a coil 12 for recording and reproducing information. That is, the head core lO is held by a slider (not shown) on its sliding surface side, and is glued to the gimbal plate 13 so that the legs of the head core pass through the gimbal plate 13, and on the side opposite to the medium sliding surface. The coil 12 is wound around the leg portion. A flexible wiring board 16 is attached to the gimbal plate 13, on which a conductor pattern 14b is formed and has lands 14a for connecting coil terminals.

In the prior art, this flexible wiring board +7i16 has a simple T-shaped structure, and the fulcrum of the gimbal plate 13 (i.e., the position where the tip of the bottle protruding from the carriage comes into contact) P
It was attached to the proximal end of the carriage. Therefore, the terminal of each coil 12 is routed around the fulcrum P and connected to the corresponding land 14a by soldering. The wire that makes up the coil 12 is an extremely thin magnet wire, so if it is routed for a long distance, there is a risk that it will sag or move due to the movement of the carrier or jig, and come into contact with a support bottle, etc., and be damaged or disconnected. 1
A molding resin 18 is applied and fixed onto the gimbal plate 13 and the flexible wiring board 16 from the terminal draw-out portion of 2 to the land 14a to protect the coil wire.

[Problems to be Solved by the Invention] However, since such a magnetic head has an extremely small structure, the thin wire is routed around the fulcrum of the gimbal plate, and the terminal is left slack for a predetermined length. The work of soldering is very time-consuming and requires skill, and in addition, the work of applying mold resin 18 to cover the coil wire at a predetermined position on the flat gimbal plate is also extremely cumbersome. It has the disadvantage of poor workability.

An object of the present invention is to eliminate the drawbacks of the prior art as described above, to allow the terminal of a coil attached to a head core to be connected to a flexible wiring board extremely easily, and to improve performance by eliminating interference with support pins. The object of the present invention is to provide a magnetic head that can be improved.

[Means for Solving the Problems] The present invention, which can achieve the above-mentioned objects, has a land for connecting the coil end on the front end side of the carriage than the head coil, and supports a pin protruding from the carriage. This is a gimbal type magnetic head that uses a flexible wiring board on which a conductor pattern is formed so as to detour around the position and is pulled out to the base end side of the carriage.

The gimbal plate support pin of the carriage contacts the gimbal plate at a position closer to the proximal end of the carriage than the head core, and pivotably supports the gimbal plate.

[Operation] Since the core terminal is connected on the opposite side of the gimbal plate fulcrum with respect to the head core penetration position, the terminal connection process is extremely easy as all you have to do is pull out the wire end straight from the coil and solder it. It is. Furthermore, the work of applying molding resin to protect the coil terminals can be easily performed since there is no risk of interfering with the support pins.

Further, since the conductor pattern formed on the flexible wiring board only passes around the fulcrum of the gimbal plate in a detour, there is no obstacle to the support bin, and the performance of pivot support can be improved.

[Embodiment] FIG. 1 is an exploded perspective view showing an embodiment of a magnetic head according to the present invention, and FIG. 2 is a perspective view of the assembled magnetic head. The configurations of the head core, gimbal plate, etc. may be the same as conventional ones. This embodiment is an example in which the present invention is applied to a tunnel erase type laminate magnetic head. The head core IO has a laminate structure in which an erasing chip is placed on both sides of a recording/reproducing chip, and non-magnetic sliders 20. '22 is installed. Such head core 10 is bonded to gimbal plate 24 with sliders 20 and 22 so that its medium sliding surface slightly protrudes. Although not shown in the drawings, this gimbal plate 24 is attached to the carriage at its periphery, and is pivotally supported by a pin at a substantially central position (fulcrum P).

When attaching the slider to the gimbal plate 24, a flexible wiring board 26 is bonded to the surface opposite to the surface. This flexible wiring board 26 has a land 28a for connecting a coil terminal on the side closer to the front end of the carriage than the head core 10, and a conductive pattern 28a that bypasses the central opening 30.
8b is formed and then pulled out toward the base end of the carriage. The opening 30 is attached at a position just surrounding the fulcrum P of the gimbal plate 24.

A recording/reproducing coil 32 and an erasing coil 34 for adjusting the trunk width are attached to the legs of the head core 10 that pass through the gimbal plate 24, and the recording/reproducing chip side has a closed magnetic circuit structure with a backper 36. The coil terminals of the coils 32 and 34 are pulled out to the side opposite to the fulcrum P of the gimbal plate 24 with respect to the head core 10,
The soldering is directly connected to the land 28a located in the vicinity of the land 28a. A molding resin 38 is applied near the soldered part to protect the coil terminal. and,
A support pin of the carriage abuts against the fulcrum P of the gimbal plate 24, thereby pivotally supporting the magnetic head so as to maintain good contact with the medium.

Although a preferred embodiment of the present invention has been described in detail above, it goes without saying that the present invention is not limited to the configuration of the above embodiment, and the shape of the flexible distribution board may vary depending on the shape of the gimbal plate and the head core. It goes without saying that modifications can be made as appropriate.Although the above embodiment is a case of a laminated magnetic head, the present invention is applicable to all magnetic heads using gimbals, including bulk type magnetic heads.

[Effects of the Invention] As described above, the present invention connects the coil terminal to the head core on the side opposite to the fulcrum of the gimbal plate, and the conductor pattern of the flexible wiring board is connected to the fulcrum of the gimbal plate. Since the shape bypasses the coil, all you have to do is pull out each end of the coil straight to the corresponding land and connect it, which simplifies the connection work and makes it easier to apply molding resin to protect the coil ends. This has the effect of making it easier to put on and extremely improving workability.

Further, in the present invention, since there is no obstacle to the bottle on the support bottle side of the gimbal plate, the performance of the pivot support is improved and it is possible to maintain an even better contact state with the medium.

[Brief Description of the Drawings] Fig. 1 is an exploded perspective view showing an embodiment of the present invention, Fig. 2 is a perspective view showing its assembled state, and Fig. 3 is a perspective view showing an example of the prior art. be. 10...Head core, 12...Coil, 16°26
. . . Flexible wiring board, 14a, 28a . . . Land for connecting coil terminals, 14b, 28b . Coil for use. Patent Applicant: Fuji Electrochemical Co., Ltd. Agent: Minoru Shigemi Figure 2 Figure 3 Figure I8

Claims (1)

[Claims] 1. A magnetic device comprising a head core, a gimbal plate that holds the head core and is supported by pins protruding from the carriage, and a flexible wiring board whose one end is fixed to the gimbal plate and to which the coil terminal of the head core is connected. In the head, the gimbal plate is pivotally supported by a pin on the side of the base end of the carriage rather than the head core, and the flexible wiring board has a land for connecting the coil terminal on the side of the front end of the carriage than the head core, bypassing the vicinity of the support position of the pin. A magnetic head characterized in that a conductive pattern is formed on the magnetic head and is drawn out toward the base end of the carriage.