JPH079739B2 - Transducer support device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating type transducer support device for a rotary storage device, and more particularly, the floating amount of the transducer is small.
The present invention also relates to a transducer support device suitable for a high-density storage device with a small transducer load.

[Conventional technology]

The rotary storage device is disclosed in, for example, Japanese Patent Application Laid-Open No. 558692/1985, which includes a rotating storage medium, a transducer for reading / writing information, a transducer supporting device for supporting the transducer, and An access device is provided for accessing and holding the transducer at any desired radial location on the rotating storage medium.
The conventional transducer support device is disclosed in, for example, JP-A-55
As disclosed in Japanese Unexamined Patent Publication (Kokai) No. 22296/1990, a rectangular cutout portion forming two outer flexible fingers connected by a low-flexibility lateral frame and a rectangular cutout portion extending from the lateral frame toward the cutout portion. A flexible body having a flexible body central tongue portion, a rigid structure that also serves as an elastic portion supporting the flexible body, and a load beam portion; and between the rigid structure body and the central tongue portion And an air bearing slider equipped with a transducer mounted on the central tongue. In the above configuration, the load protrusion provided on the flexible body is in contact with the rigid structure to form a joint,
The rigid structure applies a load that presses the slider against the disk surface by this joint. The flexible body and the rigid structure described as the prior art correspond to the flexible structure support and the rigid structure support, respectively, in the description of the present invention. The elastic portion of the rigid structure is provided on the base side of the transducer support device, that is, on the access mechanism side, and the assembly tolerance of the access mechanism with respect to the disc surface during assembly and the disc surface due to the deformation or vibration of the disc surface. With respect to the movement in the vertical direction, in order to minimize the change in the pressing load by which the load beam portion presses the air bearing slider against the disc surface, the movement in the direction perpendicular to the disc surface is It is softly structured. On the other hand, the spring constant with respect to the change in the flying height of the air bearing slider is very rigid and is a large spring constant of about 100 times or more the spring constant of the elastic portion. Further, the load protrusion and the load beam portion facing the load protrusion also have a very large spring constant with respect to the load in the direction perpendicular to the disc surface.

In the operating state of the rotary storage device, the air flow is generated by the rotation of the disk. The load beam portion placed in the flow receives a lift force toward the disc surface in a direction perpendicular to the disc surface from the state of air flowing on the disc side and the side opposite to the disc side. This lift is supported by the increase in the pressing force against the air bearing slider and the increase in the supporting force by the access mechanism to which the elastic portion of the rigid structure is attached.

[Problems to be solved by the invention]

The above-mentioned prior art does not take into consideration that most of the lift force is supported by the increase in the pressing force of the air bearing slider, and a large change in the flying height occurs due to the lift force. I had a problem.

It is an object of the present invention to obtain a transformer device supporting apparatus in which the flying height changes little due to the lift acting on the load beam being borne by the air bearing slider and the access mechanism. .

[Means for solving problems]

The above-mentioned object is achieved by providing a second elastic portion at a position of the rigid structure support facing the load projection.

[Action]

Due to the lift force acting on the load beam portion, the elastic portion of the rigid structure support and the second elastic portion are both deformed. At this time, the sum of the supporting forces distributed to both elastic portions is equal to the lift force, and the amount thereof is inversely proportional to the deformation amount of both elastic portions. The supporting force distributed to the second elastic portion serves as a force that causes a change in the flying height. Therefore, by providing the second elastic portion, the force that causes the change in the flying height is significantly reduced,
The change in levitation can be reduced.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a plan view of the present invention, and FIG. 2 is a side view. The rotating device (storage medium) 1 is provided with a transducer supporting device 3 for accessing the transducer 2 at a desired radial position and an access device arm 4 (not shown) which is the tip of the access device. Shows. The transducer support device 3 includes a rectangular cutout 7 forming two flexible fingers 6 connected by a low-flexible lateral frame 5, and a flexible central tongue 8 extending toward the cutout. A flexible body 9 having: an elastic portion 10 for supporting the flexible body 9; a load beam portion 11;
A relatively rigid rigid structure support 13 composed of the elastic portion 12 of the center tongue portion and a loading projection portion 14 disposed between the central tongue portion and the second elastic portion 12. An air bearing slider 15 having the transformer 2 mounted thereon is attached to the portion 8.

FIG. 3 is a plan view showing details of the vicinity of the second elastic portion 12,
The second elastic portion 12 is provided by piercing the slit 16 of the book at a portion of the rigid structure support 13 facing the loading projection 14 of the loading beam 11.

According to this embodiment, the elastic portion 10 and the second elastic portion 12 when the lift F as shown in FIG.
And deform together. Therefore, F is the air bearing
The slider 15 and the access mechanism arm 4 can share and bear the load, and most of the conventional F are air bearings.
As compared with the case where the slider 15 is loaded, the change in the load applied to the air bearing slider 15 due to F is reduced, and the change in the flying height can be reduced.

FIG. 4 shows details of the second elastic portion 12 portion of the second embodiment. In this embodiment, a beam rectangular notch 17 is formed at the tip of the load beam portion 11 to form a cantilever type second elastic portion 12. According to this embodiment, since the second elastic portion 12 can be formed more softly, the air bearing
The load on the slider can be further reduced.

FIG. 5 is a plan view showing details of the vicinity of the second elastic portion 12 in the third embodiment. In this embodiment, the beam rectangular notch
In contrast to the second embodiment shown in FIG. 4, 17 is formed such that the tip end side of the load beam portion is the free end of the cantilever type second elastic portion 12. According to this embodiment, the second elastic portion
There is an advantage that 12 spring constants can be freely selected.

FIG. 6 is a plan view showing details of the vicinity of the second elastic portion in the fourth embodiment. In the present embodiment, the load beam portion 11
The second elastic portion 12 is formed except for the flange 18 at the tip of the. According to this embodiment, since the second elastic portion 12 is separated from the pressing portion in the pressing operation for forming the flange 18, there is an advantage that the pressing operation is facilitated.

〔The invention's effect〕

According to the present invention, it is possible to reduce the change in the pressing force of the air bearing slider due to the fluid force acting on the load beam portion, so that it is possible to reduce the change in the flying height of the transformer.
There is an effect that the reading and writing of signals can be performed stably and the possibility of contact between the slider and the disk is reduced. The rate at which the change in the flying height can be reduced is almost proportional to the ratio of the spring constants of the elastic portion 10 and the second elastic portion 12, and at least 2/3 that of the conventional one.
It can be reduced to the following.

[Brief description of drawings]

FIG. 1 is a front view of the first embodiment of the present invention, and FIG.
FIG. 3 is a side view, FIG. 3 is a plan view showing details of the second elastic portion in the embodiment shown in FIGS. 1 and 2, and FIGS. 4, 5, and 6 are other views of the present invention. It is a plan view showing the details of the 2nd elastic part in an example. 1 ... Rotating disk, 2 ... Transducer, 3 ... Transducer support device, 4 ... Access device arm, 5
...... Low flexible lateral frame, 6 ...... Flexible fingers, 7 ...... Rectangular notch, 8 ...... Flexible central tongue, 9 ...... Flexible body, 10 ...... Elastic section, 11 ...... ... Beam part for load, 12 ... Second elastic part, 13 ...
… Rigid structure support, 14 …… Loading protrusion, 15 …… Air bearing slider, 16 …… Slit, 17 …… Beam rectangular notch, 18 …… Flange.

Claims (3)

[Claims] 1. A flexible structure support having an air bearing slider having a transducer, a tongue for mounting the slider, flexible fingers connected to the tongue and a joint formed on the tongue. And a rigid structure support including an elastic part and a load beam part for applying a load to the flexible structure support, wherein a joint part of the flexible structure support in the rigid structure support is provided. A transducer support device, characterized in that a second elastic portion is formed in a portion opposed to. 2. The transducer supporting device according to claim 1, wherein the second elastic portion is formed by providing a cutout portion in the rigid structure support. 3. The transducer support device according to claim 1, wherein the second elastic portion is formed by notching a flange of a load beam portion in the rigid structure support.