JPH06195668A - Head moving device - Google Patents

Abstract

PURPOSE:To decrease the number of parts and the man-hours for assembly and to reduce the size and weight of the head moving device by forming wiring patterns on the head moving member itself and directly soldering the winding terminal of a magnetic head to the wiring patterns. CONSTITUTION:The winding terminals 5a of the magnetic head 5 placed on a resist layer 26 at the front end of a head carriage 1 are directly soldered onto the land of the wiring patterns 25. Input and output terminals which are circuit elements for signal amplification placed on the layer 26 are directly soldered similarly on the land in the middle part of the patterns 25. The input and output terminals of a connector 29 placed on the layer 26 on an arm mounting base 1a side of the carriage 1 which is the opposite side of the head 5 are similarly soldered directly onto the land on the signal input and output side of the patterns 25. The other end of a flexible printed circuit board 30 is freely attachably and detachably inserted into a connector 29. As a result, the signal amplification of the head 5 is executed in the position nearest the head 5 and the noise resistance performance is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head moving device most suitable for application to, for example, a floppy disk device,
In particular, it relates to a magnetic head that is moved along a disk-shaped recording medium such as a floppy disk by a moving member.

[0002]

2. Description of the Related Art Conventionally, a head moving device of a floppy disk device uses a head carriage 1 and a head arm 2 as a head moving member, as shown in FIGS. The head arm 2 is screwed onto a head mount 1a formed on the head carriage 1 by a plurality of set screws 4 via a leaf spring 3. A pair of upper and lower magnetic heads 5 and 6 mounted on the upper and lower opposite surfaces of the head carriage 1 and the head arm 2 are in contact with the upper and lower surfaces of a floppy disk 7, which is a disk-shaped recording medium.

A guide shaft 9 mounted on a chassis (not shown) slidably supports a thrust bearing 10 formed on one side surface of the head carriage 1, and
A needle 12 mounted on the other side surface of the head carriage 1 is engaged and mounted on a lead screw 11 mounted on the chassis in parallel with the guide shaft 9. Then, while the floppy disk 7 is rotationally driven by a spindle motor (not shown), the lead screw 11 is intermittently rotated forward and backward by the stepping motor 13, so that the head carriage 1 and the head arm 2 are integrated into a floppy disk. Arrows a and b which are the radial direction of the disk 7
Floppy disk 7
Is configured to record and reproduce.

By the way, conventionally, as shown in FIG. 10, the head carriage 1 is formed of a metal plate 15 such as an iron plate or an aluminum plate (for example, Japanese Patent Laid-Open No. 62-6473).
Issue gazette).

However, conventionally, when the head carriage 1 is formed by the sheet metal 15 which is a conductive member, the magnetic head 5 is used.
It is necessary to attach the head base 16 (normally made of sheet metal) 16 on the head carriage 1 via an insulating member 17 made of synthetic resin or the like. As a result, the magnetic head 5 floats above the head carriage 1, and a long flexible printed circuit board 18 must be used for wiring from the signal processing board (not shown) to the plurality of winding terminals 5a of the magnetic head 5. I have to. The flexible printed circuit board 18 is attached to the head carriage 1 by adhesion or the like, and a plurality of lands 18 at the tip of the wiring pattern are attached.
A plurality of winding terminals 5a of the magnetic head 5 are soldered to.

Conventionally, as shown in FIG. 11, when the head arm 2 and the like are made of synthetic resin 20 which is an insulating member, the magnetic head 6 is attached to the head arm 2 via a gimbal 21. Also, the flexible printed circuit board 22 is used for the wiring from the signal processing board to the winding terminal of the magnetic head 6.

[0007]

However, in the conventional example shown in FIG. 10, the number of parts and the number of assembling steps are large, the cost is extremely high, and it is difficult to reduce the size and weight. Further, as in the conventional example shown in FIGS. 10 and 11, in the method of using the long flexible printed boards 18 and 22 for wiring from the signal processing board to the winding terminals of the magnetic heads 5 and 6, the magnetic heads 5 and 6 are However, there is a problem that the external signal easily deteriorates due to the large deterioration of the signal.

The present invention has been made in order to solve the above problems, and it is possible to significantly reduce the number of parts and the number of assembling steps and to improve the noise resistance performance. The purpose is to provide a device.

[0009]

A head moving device of the present invention for achieving the above object is a head moving device in which a magnetic head is attached to a head moving member to move along a disk-shaped recording medium. A wiring pattern is formed on the moving member itself, and the winding terminals of the magnetic head are directly soldered to the wiring pattern. At this time, the signal amplification circuit element is directly soldered to the wiring pattern formed on the head moving member itself,
Soldering the connector directly to the signal input / output end of the wiring pattern formed on the head moving member itself,
It is preferable to form the wiring pattern on the head moving member itself formed of a conductive member via an insulating layer, or to directly form the wiring pattern on the head moving member itself formed of an insulating member.

[0010]

In the head moving device of the present invention configured as described above, the winding terminals of the magnetic head are directly soldered on the wiring pattern formed on the head moving member, so that the number of parts and the number of assembling steps are wide. Can be reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a head moving device of a floppy disk device to which the present invention is applied will be described below with reference to FIGS. It should be noted that the same structural parts as those in FIGS. 8 to 11 are designated by the same reference numerals to omit redundant description.

First, FIG. 7 shows the entire head moving device. Both the head carriage 1 and the head arm 2 are formed by a metal plate 15 such as an iron plate or an aluminum plate which is a conductive member.

Next, the head carriage 1 will be described with reference to FIGS. First, a plurality of wiring patterns 25 made of copper foil or the like are formed on the upper surface of the metal plate 15 forming the head carriage 1 with an insulating layer 24 interposed therebetween. A resist layer 26, which is a layer, is formed.

The plurality of winding terminals 5a of the magnetic head 5 placed on the resist layer 26 at the tip of the head carriage 1 are directly soldered 27 onto the lands 25a of the plurality of wiring patterns 25.

A plurality of input / output terminals 28a of the IC 28, which is a circuit element for signal amplification, mounted on the resist layer 26 in the middle portion of the head carriage 1 in the lengthwise direction of the head carriage 1 are arranged in the middle portion of the plurality of wiring patterns 25. Similarly, it is directly soldered on the land 25b.

The resist layer 2 is formed on the side of the arm mount 1a of the head carriage 1 opposite to the magnetic head 5.
6, a plurality of input / output terminals 2 of the connector 29 placed on 6
Similarly, 9a is directly soldered on the lands 25c on the signal input / output end side of the plurality of wiring patterns 25.

The flexible printed board 30 having one end connected to a signal processing board (not shown) is detachably inserted into the connector 29 for connection.

Next, the head arm 2 will be described with reference to FIGS. A plurality of wiring patterns 32 are provided on the upper surface of the metal plate 15 forming the head arm 2 in the head carriage 1.
Similarly, a resist layer is formed on these wiring patterns 32 through an insulating layer.

Under the opening 33 formed at the tip of the head arm, the magnetic head 6 is attached to the lower surface of the head arm 2 via the gimbal 21.

The plurality of input / output terminals 3 of the connector 34 placed on the resist layer at the tip of the head arm 2
4a are directly soldered onto the lands 32a of the plurality of wiring patterns 32, and the plurality of winding terminals 6 of the magnetic head 6 are
The other end of the flexible printed circuit board 35 having a short length, one end of which is soldered to a, is detachably inserted and connected to the connector 34.

The plurality of input / output terminals 36a of the IC 36, which is a signal amplifying circuit element placed on the resist layer in the middle of the head arm 2 in the lengthwise direction, has a plurality of land portions in the middle of the plurality of wiring patterns 32. Soldered directly on 32b.

The plurality of input / output terminals 37a of the connector 37 placed on the resist layer on the side of the leaf spring 3 of the head arm 2 opposite to the magnetic head 6 are connected to the signal input / output of the plurality of wiring patterns 32. It is directly soldered onto the land 32c on the end side.

The other end of the flexible printed board 38, one end of which is connected to a signal processing board (not shown), is detachably inserted into the connector 37 for connection.

When the head carriage 1 and the head arm 2 are made of an insulating material such as synthetic resin, an insulating layer is not required, so that a plurality of wiring patterns 25, 32 are provided.
Can be directly formed on the head carriage 1 and the head arm 2.

The above is a description of one embodiment of the present invention.
The present invention is not limited to the above embodiments, and various modifications can be made based on the technical idea of the present invention. Also,
The present invention is not limited to a floppy disk device, but can be applied to a disk device for recording and / or reproducing various disk-shaped recording media.

[0026]

The head moving device of the present invention constructed as described above has the following effects.

According to the present invention, the winding terminals of the magnetic head are directly soldered to the wiring pattern formed on the head moving member itself, so that the number of parts and the number of assembling steps can be greatly reduced. Therefore, it is possible to greatly reduce the cost accompanying the simplification of the manufacturing process, and it is possible to promote the reduction in size and weight of the head moving device.

According to the present invention, since the signal amplifying circuit element is directly soldered to the wiring pattern formed on the head moving member itself, the signal amplification of the magnetic head can be performed at the position closest to the magnetic head. The noise resistance performance can be greatly improved.

According to the present invention, since the connector is directly soldered to the signal input / output end of the wiring pattern formed on the head moving member itself, the flexible board or the like connected to the signal processing board is connected to the connector. Alone
Wiring work between the signal processing board and the magnetic head can be completed with one touch.

According to claims 4 and 5, the wiring pattern is formed on the head moving member itself formed of a conductive member via an insulating layer, or the wiring pattern is formed on the head moving member itself formed of an insulating member. Since the magnetic head is directly formed, it is not necessary to insulate the magnetic head, and the winding terminal of the magnetic head can be easily soldered onto the wiring pattern.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating a head carriage of a head moving device that is an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged plan view of a main part of FIG.

4 is a sectional side view of FIG.

FIG. 5 is a perspective view illustrating a head arm of the head moving device of the present invention.

FIG. 6 is a plan view of FIG.

FIG. 7 is a side view of the entire head moving device of the present invention.

FIG. 8 is a side view of the entire conventional head moving device.

9 is a plan view of FIG. 8. FIG.

FIG. 10 is an exploded perspective view of a head carriage of a conventional head moving device.

FIG. 11 is a perspective view of a head arm of a conventional head moving device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 head carriage (head moving member) 2 head arm (head moving member) 5, 6 magnetic head 5a, 6a winding terminal of magnetic head 15 sheet metal (conductive member) 24 insulating layer 25, 32 wiring pattern 26 resist layer 28 IC (Signal amplification circuit element) 29, 37 Connector

Claims (5)

[Claims] 1. A head moving device for mounting a magnetic head on a head moving member and moving the head along a disk-shaped recording medium, wherein a wiring pattern is formed on the head moving member itself, and the magnetic head is wound around the wiring pattern. A head moving device characterized in that the wire terminals are directly soldered. 2. The head moving device according to claim 1, wherein a signal amplification circuit element is directly soldered to the wiring pattern formed on the head moving member itself. 3. The head moving device according to claim 1, wherein a connector is directly soldered to a signal input / output end of the wiring pattern formed on the head moving member itself. 4. The head moving apparatus according to claim 1, wherein the wiring pattern is formed on the head moving member itself formed of a conductive member through an insulating layer. 5. The head moving device according to claim 1, wherein the wiring pattern is directly formed on the head moving member formed of an insulating member.