JPH03134886A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To easily fit a dehumidifier into a housing only by bending it and to reduce fitting manhours by constituting the dehumidifier out of a bag body consisting of a flexible material with permeability and a moisture absorbent filled up in the bag. CONSTITUTION:The dehumidifier 32 is fitted into the housing 1 by pressing it into a notch 31 from an opening part 31A of the notch 31. As a result, the dehumidifier 32 is bent by flange parts 31B and 31C and the worker's pressing force, and is pressed under its bending state into the notch 31. The pressed dehumidifier 32 is securely held in the notch 31 because of expansion with its own elasticity. Then, the bag body 33 of the dehumidifier 32 is respired on the whole surface to make air in the housing 1 go in and out of the bag body 33. As a result, humidity inside the housing 1 is absorbed through respiration of the bag body 33 by the moisture absorbent 34. In this case, the dehumidifier 32 is formed with the flexible bag body 33, and this can be fitted only by pressing it into the notch 31. By this method, the fitting manhours is reduced, and the operability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic disk device used as an external storage means.

[Conventional technology]

Generally, a magnetic disk device has a structure as shown in FIGS. 6 and 7.

In the figure, 1 indicates a housing, and the housing 1 is composed of a bottomed base 2 and a cover 3 that covers the base 2. The cover 3 is provided with a press filter 4 that allows air to enter and exit the housing 1. Reference numeral 5 denotes a spindle motor located within the housing 1 and provided on the base 2, and a magnetic disk 6 is attached to the spindle motor 5.

A head arm mechanism 7 is provided on the base 2 and extends on the surface of the magnetic disk 6. The head arm mechanism 7 mainly includes a pivot shaft 8 implanted in the base 2,
an arm portion 9 swingably supported by the pivot shaft 8;
A magnetic head 10 is attached to the tip of the arm portion 9 and is capable of directly recording and reproducing information on the surface of the magnetic disk 6.
and a voice coil motor 11 provided on the base end side of the arm portion 9.

12 is an internal filter installed inside the housing 1;
The internal filter 12 is designed to capture foreign matter floating within the housing 1.

13 is a dehumidifying device located within the housing 1 to remove moisture within the housing 1;
It is attached to a notch 14 provided in the side corner vertical wall 2A. This dehumidifier 13 has a triangular case body 1 with a bottom.
5 and a lid 16 that covers the case body 15; a moisture absorbent 18 such as silica gel housed in the case 17; and a moisture absorbent 18 located in the case 17.
a breathable cushioning material 19 provided to cover the case 17 from above;
It consists of a vent 20 that allows air to enter and exit, and a filter 21 provided inside the case 17 of the vent 20.

When the air inside the housing 1 breathes in and out of the dehumidifier 13 through the vent 20 of the dehumidifier 13, the moisture in the air is absorbed into the moisture absorbent 1 inside the dehumidifier 13.
8, the moisture inside the housing 1 is removed.

[Problem to be solved by the invention]

However, in the above-mentioned conventional technology, the dehumidifier 13 is composed of a case 17, a moisture absorbent 18, a cushioning material 19, etc., and its structure is complicated, and manufacturing requires multiple steps. Furthermore, when installing the dehumidifying device 13 into the notch 14 of the housing 1, multiple steps such as applying an adhesive and then installing the dehumidifying device 13 must be performed, which increases the cost. .

The present invention has been made in view of the problems of the prior art described above, and it is an object of the present invention to provide a magnetic disk drive in which the dehumidifier has a simple structure and can be easily installed.

[Means to solve the problem]

The configuration adopted by the present invention in order to solve the above-mentioned problems includes a housing including a base and a cover provided to cover the base, a magnetic disk provided in the housing, and a magnetic disk provided in the housing. In the magnetic disk device, the dehumidifier includes: a head arm mechanism for recording and reproducing information on the magnetic disk; and a dehumidifier for removing moisture within the housing;
It consists of a flexible bag that is entirely breathable, and a moisture absorbent filled in the flexible bag.

[Effect]

With the above configuration, the number of component parts of the dehumidifier is reduced;
Furthermore, since it has flexibility, it can be easily installed in the housing, and the overall cost can be reduced.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 5. The overall configuration of the magnetic disk device of this embodiment is almost the same as the magnetic disk device of the prior art described above, and the same members are given the same reference numerals and their explanations will be omitted.

In the figure, reference numeral 31 denotes a notch in this embodiment, and the notch 31 is formed at the corner of the vertical wall 2A at the corner of the base 2 of the housing 1, almost the same as in the prior art.

This notch 31 has flanges 31B on both sides thereof.

31C, and when a bag 33 of a dehumidifier 32 (described later) is pushed through an opening 31A of the notch 31, the bag 3
In order to alleviate damage, resistance, etc. of 3, the flange parts 31B, 31
The tip of C is formed into a curved shape.

Reference numeral 32 designates the dehumidifying device of this embodiment, which is made of fibers, cellophane, etc. that do not cause the risk of generating dust, and has a flexible bag body 33 having a generally square bag shape and having air permeability as a whole;
The flexible bag 33 is filled with a moisture absorbent 34 such as silica gel. And this dehumidifier 32
has a certain degree of elasticity due to the flexibility of the flexible bag body 33.

The dehumidifying device 32 having the above structure is assembled into the housing 1 by being pushed into the notch 31 through the opening 31A of the notch 31, as shown in FIG. As a result, the dehumidifier 32 has a flange portion 31B.

31C and the pushing force of the worker, and is pushed into the notch 31 in the bent state. Pushed-in dehumidifier 32
is reliably held within the notch 31 as it tries to expand due to its own elasticity.

The bag body 33 of the dehumidifier 32 breathes on its entire surface, and the air inside the housing 1 is moved in and out of the bag body 33. As a result, the moisture present in the housing l is absorbed by the moisture absorbent 34 as the bag 33 breathes.

As described above, since the dehumidifier 32 is formed from a flexible bag 33 and can be assembled by simply pushing it into the notch 31, the number of assembly steps is reduced and work efficiency is improved. .

Further, since workability is improved and the number of component parts of the dehumidifier 32 is reduced, costs can be reduced.

Furthermore, since the bag body 33 can breathe through its entire surface, the moisture absorbing performance of the moisture absorbent 34 can be improved.

In the above embodiment, the dehumidifying device 32 is attached to the notch 31, but as shown in FIG.
The dehumidifying device 32 may be held between the flanges 35 and 36 by forming the flat plate portions of the vertical walls 2A at the side corners of the base 2.

Further, the breathability may be adjusted by selecting the material used for the bag body 33 of the dehumidifier 32. That is, by arbitrarily selecting the size of the mesh of the bag 33 or arbitrarily selecting the number of pores per unit area, the amount of air that enters and exits inside and outside the bag 33 due to breathing of the bag 33 can be changed. Therefore, the life of the dehumidifier 32 can be adjusted. In particular, by reducing the amount of air to breathe, the life of the dehumidifier 32 can be extended.

[Effects of the Invention] As detailed above, according to the present invention, the dehumidification device is constructed from a bag made of a flexible breathable material and a moisture absorbent filled in the bag. The dehumidifier can be easily assembled into the housing simply by bending it, reducing the number of assembly steps and improving work efficiency. Further, since workability is improved and the number of component parts of the dehumidifier is reduced, costs can be reduced. Furthermore, since the bag can breathe over its entire surface, the moisture absorption performance of the moisture absorbent can be improved.

[Brief explanation of the drawing]

1 to 5 relate to an embodiment of the present invention, in which FIG. 1 is a partial plan view showing the main parts of a magnetic disk device, FIG. 2 is a perspective view showing a dehumidifying device, and FIG. III-,I
4 is a partial plan view showing the working state of attaching the dehumidifier to the notch; FIG. 5 is a partial plan view similar to FIG. 4 showing a modified example; 6 and 7 relate to the prior art; FIG. 6 is a partially cutaway plan view showing the overall configuration of a magnetic disk drive, and FIG. 7 is a longitudinal sectional view showing a dehumidifying device. DESCRIPTION OF SYMBOLS 1...Housing, 2...Base, 3...Cover 6...Magnetic disk, 7...Head arm mechanism, 3
2... Dehumidifier, 33... Bag body, 34... Moisture absorbent.

Claims (1)

[Claims] A housing consisting of a base and a cover provided to cover the base, a magnetic disk provided within the housing, and a head provided within the housing for recording and reproducing information on the magnetic disk. In a magnetic disk drive having an arm mechanism and a dehumidifying device that removes moisture within the housing, the dehumidifying device includes a flexible bag body having overall air permeability, and a bag filled in the flexible bag body. A magnetic disk device comprising a moisture absorbent.