JPS63193372A - Head attaching structure - Google Patents

Abstract

PURPOSE:To prevent a head resonance phenomenon (bed squeaking and the plastic deformation of a gimbal due to an impact force by laminating the film of an elastic body over the almost whole area of the surface of the gimbal. CONSTITUTION:A magnetic head 2 is fitted to the center part on one side face of a gimbal 1 to adhere an elastic film 5 over the almost whole area on the other side face. In the case of pinching a disk 4 by magnetic heads 2, 2 the resonance of the gimbal 1 caused by the deflection of the disk 4, etc., is blocked by the elastic film 5. In the case of receiving an impact by the drop of a device, etc., the gimbal 1 causes a deformation along slits 1A, 1A, 1B, 1B but the plastic deformation of the gimbal 1 is checked by the tension caused on the elastic film 5.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a mounting structure for a head used for recording and reproduction in a disk device that records and reproduces information signals on a recording medium such as a floppy disk (hereinafter referred to as a disk). Regarding.

[Summary of the Invention] The present invention provides a gimbal in which a predetermined slit is formed in a metal plate on the side of a carrier that moves along the radial direction of a disk, and a circumferential edge of the gimbal so that the middle part of the gimbal can swing. In a head mounting structure in which a head capable of contacting the disk is fixed to the intermediate portion of the gimbal, an elastic film is laminated over substantially the entire surface of the gimbal, so that the head is fixed to the gimbal. This prevents plastic deformation of the gimbal due to resonance phenomena (head noise) and impact forces.

[Prior Art] Conventionally, as shown in FIG. 4, in this type of head mounting structure, opposing U-shaped slits IA are opened near the periphery of a rectangular metal plate. Moreover, slits IB and 1B are opposite to each other in a direction shifted by 90 degrees from the slits IA and IA inside these slits IA and IA.
A magnetic head 2 is fixedly installed in the center of a gimbal 1 having a periphery of the gimbal 1. (FIG. 5 shows an example in which it is fixed to the support arm 3.) A recess 3A is formed in the part of the support arm 3 where the gimbal 1 is attached, and the middle part of the gimbal I can swing up and down. In addition to permitting movement, it also has a buffering function.

[Problems to be Solved by the Invention] However, in such a conventional example, there is a problem in that the gimbal l causes a head resonance phenomenon (so-called head noise) due to vibrations of the magnetic head 2 and the like.

Further, when an impact force is applied to the non-pulse 1 due to, for example, a falling accident, the gimbal 1 undergoes plastic deformation, causing the magnetic head 2 to tilt, as shown in FIG.

The present invention was devised in view of these conventional problems, and aims to provide a head mounting structure that can prevent gimbal head noise and plastic deformation.

[Means for Solving the Problems] Therefore, the present invention provides a gimbal in which a predetermined slit is formed in a metal plate on the side of a carrier that moves along the radial direction of a disk. In the head mounting structure, the head is fixed at the periphery so as to be movable, and a head capable of contacting the disk is fixed to the middle part of the gimbal, wherein the head is made of an elastic material over substantially the entire surface of the gimbal. Its structure consists of laminated elastic membranes.

[Operation] The elastic membrane is comprehensively laminated over substantially the entire surface of the gimbal, suppresses local vibrations of the gimbal, and uses its restoring force to prevent plastic deformation of the gimbal.

[Example] Hereinafter, details of the head mounting structure according to the present invention will be described based on an example shown in the drawings. Note that the same parts as in the conventional example are given the same reference numerals, and the explanation thereof will be omitted.

FIG. 1 is an exploded perspective view showing this embodiment, and FIG. 2 is a partial sectional view showing the mounting structure.

In this embodiment, the magnetic head 2 is attached to the center of one side of the gimbal l, and an elastic film 5 made of silicone rubber and having a thickness of about 20 μm is adhered to the other side over substantially the entire area.

That is, the slits IA, IA,
IB, IB are closed by an elastic membrane 5 on the other side, and the elastic membrane 5 is stretched over the openings of the slits IA, IA, IB, 1B.

FIG. 2 shows the mounting structure, which includes a carrier body 6 that moves along the radial direction of the disk 4, and a support that is pivotally supported by the carrier body 6 and is biased in a direction that presses the disk 4. A magnetic head 2 or the like is provided at a position facing the arm 3 near the tip. In addition, in the figure, 2A indicates the main magnetic pole part.

Here, recesses 6A and 3A are formed at the positions where the carrier body 6 and the support arm 3 face each other, respectively. Note that the opening edges of the recesses 6A and 3Δ are connected to the gimbal l.
When attached, the slit IA is located inside the outline of the gimbal I.

The size is set so that it appears outside the IA.

The opening edges of the recesses 6A and 3A are provided with stepped portions 6a, respectively.
, 3a are formed.

Note that the gimbal 1 on which the elastic membrane 5 is laminated as described above is
The elastic membrane 5 is thermally welded to the stepped portions 6a, 3a so as to be on the inside. In addition, various types of fixing means such as adhesion and screw fixing are possible.

Next, the operation of the head mounting structure according to this embodiment will be explained.

For example, as shown in FIG. 2, when a disk 4 is held between magnetic heads 2.degree. 2, the elastic film 5 prevents the gimbal 1 from resonating due to bending of the disk 4.

In addition, as shown in Figure 3, if the gimbal l receives a shock due to a fall, etc., the gimbal l will
Although deformation occurs along IB and IB, the tension generated in the elastic membrane 5 prevents the gimbal l from undergoing plastic deformation.

Although the first embodiment has been explained above, various other design changes are possible. For example, in the above embodiment, the elastic membrane 5 is made of silicone rubber, but other elastic membranes 5 are made of silicone rubber. Of course, other materials may be used.

Further, although the elastic film 5 is provided on the opposite side of the gimbal 1 from the magnetic bed 2, it may be provided on the same side as the magnetic head 2, or may be provided on both sides.

Note that the thickness of the elastic membrane 5 depends on the type of elastic member and the gimbal 1.
It can be changed as appropriate depending on the structure etc.

[Effects of the Invention] As is clear from the above description, in the head mounting structure according to the present invention, since the elastic film made of an elastic material is laminated over almost the entire surface of the gimbal, the elastic film Head resonance phenomenon (head squeal) can be prevented and reliable recording can be achieved at the head.

It has the effect of allowing regeneration.

In addition, since the elastic membrane prevents plastic deformation of the gimbal, the proper state of the head can be maintained over a long period of time.
This has the effect of improving the durability of the disk device.

Furthermore, it has the effect of increasing the cushioning properties of the bed.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an embodiment of the head mounting structure according to the present invention, FIG. 2 is a partial sectional view of the same, and FIG. 3 is a side view of the same.
FIG. 4 is a plan view showing the gimbal, FIG. 5 is a sectional view showing the conventional example, and FIG. 6 is a side view showing the conventional example. l...Gimbal 1% IA, IB...Slit, 2
... Magnetic head, 3... Support arm, 4... Disk, 5... Elastic membrane, 6... Carrier body. Figure 6: Conventional example

Claims (1)

[Claims] On the carrier side that moves along the radial direction of the disk,
A gimbal made of a metal plate with predetermined slits,
A head mounting structure in which a middle part of the gimbal is fixed at the periphery so as to be swingable, and a head capable of contacting the disk is fixed to the middle part of the gimbal, wherein substantially the entire surface of the gimbal is fixed. A head mounting structure characterized in that an elastic membrane made of an elastic material is laminated over the entire length of the head.