JP2587613B2 - Magnetic head - Google Patents

Description

The present invention relates to a structure of a coil terminal in a magnetic head.

[Summary of the Invention]

According to the present invention, in a magnetic head, a main part of a coil frame around which a winding is wound is disposed in a concave portion of a slider body, and a conductive member is placed on a plane substantially parallel to a head core fixing member. A connecting member arranged on a plane substantially parallel to the head core fixing member and abutting on the conductive member is fixed, and the terminal of the winding is connected to the connecting member to prevent disconnection of the terminal of the winding. In addition, it is easy to connect the coil windings to the lead board or the connection terminal to the circuit, and it is possible to make the magnetic head, and eventually the floppy disk drive as a whole thin.

[Prior Art] In a conventional magnetic head, a winding is applied to an air-core coil or a coil frame, and a coil terminal is routed to a lead board or a connection terminal to a circuit, and soldered. In addition, the coil terminal is molded with an adhesive or the like to protect the coil terminal.

[Problems to be solved by the invention]

However, in the conventional magnetic head, since the coil terminal is directly soldered to the connection terminal to the lead board or the circuit, the wire may be broken by drawing the coil terminal. In addition, there is a problem that the soldering work of the coil terminal requires manual skill and automation is extremely difficult.

[Means for solving the problem]

In order to solve the above problems, the present invention provides a slider body integrally holding a head core, a conductive member with a circuit, a coil frame fitted and mounted on the head core, a winding wound around the coil frame, and the head core. In the magnetic head including the slider body and a head core fixing member that holds the coil frame, a main part of the coil frame around which the winding is wound is disposed in a concave portion of the slider body, and is substantially similar to the head core fixing member. The conductive member is placed on a parallel plane, and a connection member disposed on a plane substantially parallel to the head core fixing member and abutting on the conductive member is fixed to the coil frame, and The terminal is connected and connected to the connection member, whereby the winding is connected to the connection member.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1A and 1B show a magnetic head in a floppy disk drive.

In this embodiment, the head core fixing member is the gimbal 1. A slider body 10 holding a head core 2 integrally therewith and a lead substrate 7 are adhesively fixed to the gimbal 1.
A coil frame 3 is inserted into the head core 2. A coil terminal 4 is inserted and fixed to the coil frame 3, a winding 6 is provided, and a terminal 5 of the winding is wound around the coil terminal 4 and soldered. The coil terminal 4 is disposed on a plane substantially parallel to the gimbal 1 so as to be in contact with a circuit pattern 8 formed on a plane substantially parallel to the gimbal 1, and the coil terminal 4 is soldered to the circuit pattern 8. Connect by attaching. By providing such a coil terminal 4, the coil terminal 4
In addition, positioning with the circuit pattern 8 becomes easy, and automation and cost reduction can be achieved. Further, by providing the coil terminal 4, the winding 6 and the terminal 5 of the winding on the coil frame 3 can be easily wound around the coil terminal 4 by soldering, and the cost can be reduced. The connection method between the coil terminal 4 and the circuit pattern 8 is thermocompression bonding,
Resistance welding, laser welding or the like may be used.

Also, the head core 2 on the lead board mounting side of the gimbal 1
When the thickness of the magnetic head is reduced by reducing the amount of protrusion, the terminal portion of the winding rises and becomes higher in molding with a conventional adhesive or the like, making it difficult to reduce the thickness. In this embodiment, both the coil terminal 4 and the circuit pattern 8 are arranged on a plane substantially parallel to the gimbal 1,
Since they are configured to be electrically connected by being brought into contact with each other, they are more advantageous in reducing the thickness of the magnetic head than in the related art. Further, by arranging the coil frame 3 in the concave portion of the slider body 10 that integrally holds the head core 2, it is possible to suppress the height of the upper surface of the gimbal 1, which also makes it possible to reduce the thickness of the gimbal 1 as compared with the related art. You can get a head.

FIG. 3 shows another embodiment of attaching the coil terminal 4 to the coil frame 3 and an embodiment in which the coil terminal 4 is connected to a connection terminal 27 with a circuit. The head core fixing plate 21 includes the head core 2 and the circuit. The connection terminal 27 is bonded and fixed, and the coil frame 3 is inserted into the head core 2. In this embodiment, the head core fixing member is the head core fixing plate 21. The head core fixing plate 21 is the same as the gimbal 1 in that it supports the magnetic head, but the gimbal 1 has a movable magnetic head, whereas the head core fixing plate 21 has a fixed magnetic head. Type. A coil terminal 4 is driven into the coil frame 3, a winding 6 is provided, and a terminal 5 of the winding is wound around the coil terminal 4 and soldered. The coil terminal 4 is disposed on a plane substantially parallel to the head core fixing plate 21 so as to abut a connecting portion 28 formed on a plane substantially parallel to the head core fixing plate 21. 28 is connected by laser welding. By providing such a coil terminal 4, the coil terminal 4 and the connecting portion 28 can be connected at a high speed, and the cost can be reduced.

〔The invention's effect〕

As described above, the present invention provides a slider body integrally holding a head core, a conductive member with a circuit, a coil frame fitted and mounted on the head core, a winding wound around the coil frame, the head core, In a magnetic head including a slider body and a head core fixing member that holds the coil frame, a main part of the coil frame around which the winding is wound is disposed in a recess of the slider body, and is substantially parallel to the head core fixing member. The conductive member is placed on a plane, and a connection member disposed on a plane substantially parallel to the head core fixing member and abutting on the conductive member is fixed to the coil frame, and a terminal of the winding is fixed. The configuration in which the winding is electrically connected to the conductive member by connecting and electrically connecting the connection member can prevent disconnection of the coil terminal, thereby reducing the manufacturing yield. This eliminates the need for the step of molding the connection part with an adhesive, and also enables automation and speeding up of the process of establishing electrical connection between the windings and the circuit, thereby reducing costs and improving the thickness of the magnetic head. Is achieved.

[Brief description of the drawings]

FIG. 1 is a plan view (a) and a main cross-sectional view (b) showing a magnetic head terminal structure of the present invention. FIG. 2 is a plan view (a) and a main cross-sectional view (b) showing a conventional magnetic head terminal structure. FIG. 3 is a plan view (a) and a main cross-sectional view (b) showing a magnetic head terminal structure according to another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Gimbal 2 ... Head core 3 ... Coil frame 4 ... Coil terminal 5 ... Terminal of winding 6 ... Winding 7 ... Lead board 8 ... Circuit pattern 9 ... Mold with adhesive 10 ... … Slider body 21… Head core fixing plate 27… Connection terminal with circuit 28… Connection part

Claims (1)

(57) [Claims] 1. A slider body integrally holding a head core, a conductive member with a circuit, a coil frame fitted and mounted on the head core, a winding wound around the coil frame, the head core, the slider body, and the coil In a magnetic head comprising a head core fixing member for holding a frame, a main part of the coil frame around which the winding is wound is disposed in a concave portion of the slider body, and the conduction is formed on a plane substantially parallel to the head core fixing member. A member is mounted, and a connection member disposed on a plane substantially parallel to the head core fixing member and abutting on the conductive member is fixed to the coil frame, and a terminal of the winding is connected to the connection member. A magnetic head, characterized in that the winding is conducted to the conducting member by conducting.