JPH0383281A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To almost absorb bending and twisting of a frame into a viscous body even when these accidents take place and to reduce influence of external vibration and impact by coupling a case and the frame with the viscous body and holding the case accordingly. CONSTITUTION:This magnetic disk device is provided with a magnetic head and its case 1, and the frame 2 for supporting the case 1. The case 1 in this case is formed in a rectangular shape. The frame 2 is provided with a frame part 2a surrounding a side periphery of the case 1 and a fitting flange 2b formed by bending the lower end of the frame part 2a and then formed with fitting holes for packaging. Then, the side periphery of the case 1 and the frame part 2a of the frame 2 are coupled together by the viscous body 3. The viscous body 3 is provided with the whole circumference of the side periphery of the case 1 to fill a gap between the side periphery and the frame part 2a. By this method, even when the bending and twisting should happen to the frame, these are absorbed by the viscous body to prevent their transmission to the case 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic disk device in which a frame supports a container containing a magnetic head and a magnetic disk.

[Prior Art] In general, sealed-layer magnetic disk devices that record and reproduce information by accommodating a magnetic head and a magnetic disk in a sealed container are particularly used for small-sized devices (the outer diameter of the magnetic disk is 5 inches or less). Usually, the sealed container (so-called disk enclosure, abbreviated as DE) has a structure in which it is supported by a frame via vibration-proof rubber. As shown in FIGS. 2(a) and 2(b), the container 1 of the magnetic disk drive is
However, the frame 2 is
It is fixed with a screw 5.

When the above-described magnetic disk device is mounted in a system, it is mounted using predetermined screw mounting holes (not shown) provided in the frame 2 in a -fi manner. Small magnetic disk drives that use 5-inch or 3.5-inch magnetic disks have screw mounting holes in the same mounting positions as floppy disk drives of the same size, which is almost standard in the industry. has been done. Furthermore, the vibration isolating rubber 4 is usually placed at a corner of a small magnetic disk at due to dimensional constraints.

[Problem M to be Solved by the Invention] However, in the above-mentioned conventional magnetic disk device, X.

When subjected to vibration or shock in each of the Y and Z directions (see Figures 2 (a) and (b)), the force is first applied to the mounting holes of the frame 2, and then transferred to the vibration isolating rubber 4 via the frame 2. and then transmitted to the container. At this time, deflection occurs between the frame mounting hole and the vibration isolating rubber, and this is not sufficiently absorbed by the vibration isolating rubber 4 and is transmitted to the container 1 via the screw 5, so that the behavior of the container 1 is The drawback was that it became unstable.

[Means for Solving the Problems] Technical means of the present invention for solving such problems is a magnetic disk device that includes a container that accommodates a magnetic head and a magnetic disk, and a frame that supports the container. , the container and the frame are joined with a viscous material.

[Embodiment] A magnetic disk device according to an embodiment of the present invention will be described below based on the accompanying drawings.

As shown in FIGS. 1(a) and 1(b), the magnetic disk device according to the embodiment includes a container 1 that accommodates a magnetic head and a magnetic disk, and a frame 2 that supports the container 1. The container 1 is formed into a rectangular parallelepiped shape. The frame 2 includes a frame portion 2a surrounding the side circumference of the container 1, and a mounting flange 2b bent at the lower end of the frame portion 2a to form a mounting hole (not shown) for mounting. There is. In this case, a small magnetic disk device using a 5-inch or 3.5-inch magnetic disk is provided with mounting holes at the same mounting position as a floppy disk device of the same size.

Further, the side circumference of the container 1 and the frame portion 2a of the frame 2 are joined by a viscous material 3. The viscous body 3 is provided over the entire side circumference of the container l, and closes the gap between the side circumference and the frame portion 2a.

Therefore, when the magnetic disk drive is mounted in a system, it is mounted by inserting screws or the like into the mounting holes of the mounting flange 2b of the frame 2.

In this system implementation state, as shown in FIGS. 1(a) and 1(b), the magnetic disk device is X.

When subjected to vibration or impact in each of the Y and Z directions, the force is first applied to the mounting hole of the frame 2, transmitted to the viscous body 3 via the frame 2, and then transmitted to the container 1. In this case, even if frame 2 is bent or twisted,
Since the container 1 is supported by the frame 2 only by the viscous material 3, most of the water is absorbed by the viscous material, and the container 1
transmission to is suppressed. Therefore, the behavior of the container 1 is prevented from becoming unstable. In particular, in frame 2, vibrations and shocks received from the outside when the system is mounted are
When applied to the frame 2, it is transmitted to the container 1 via the viscous body 3, so resonance of the frame 2 can be eliminated.

[Effects of the Invention] As explained above, according to the magnetic disk device of the present invention, since the container is held by joining the container and the frame with a viscous material, even if the frame is bent or twisted, almost no viscous material is used. It is possible to prevent the behavior of the container from becoming unstable, and it is also possible to eliminate the resonance of the frame caused by vibrations and shocks applied to the frame. This has the effect of reducing the impact.

[Brief explanation of drawings]

FIG. 1(a) is a plan view showing a magnetic disk device according to an embodiment of the present invention, and FIG. 1(b) is a plan view showing A-Af in FIG. 1(a).
i sectional view, FIG. 2(a) is a plan view showing an example of a conventional magnetic disk device, and FIG. 2(b) is a cross-sectional view of B=B in FIG. 2(a).
FIG. 1: Container 2: Frame: Viscous body 4: Anti-vibration rubber: Screw 6; Color

Claims (1)

[Claims] What is claimed is: 1. A magnetic disk device comprising a container for accommodating a magnetic head and a magnetic disk, and a frame for supporting the container, wherein the container and the frame are joined by a viscous material.