JPH0845256A - Packaging device for head disk assembly - Google Patents

Abstract

PURPOSE:To prevent infiltration of corrosive gases and harmful gases into a case by providing a package with an opening in correspondence to the respiration port of a case and providing this package with a sealing means which forms a hermetic space by the package and the case between the circumference of the opening and the circumference of the respiration port of the case. CONSTITUTION:The head disk assembly 1 is housed in a hermetic state into a barrier metal sealing bag 12 exclusive of the respiration port 10 part at the time of transporting, storage in a warehouse, etc. A sound absorbing material 8 mounted at the outer side of the assembly 1 is composed of urethane sponge contg. additives for fire retardance. A solder resist is applied on a printed circuit board 9 mounted on the outer side of the assembly 1 and passive parts and active parts consisting of various org. materials are mounted thereon. These parts generate the corrosive gases and harmful org. gases by temp. elevation. These harmful gases are confined into the space closed by sealing bag 12 and the outer side of the assembly 1. The inside of the assembly 1 is maintained always clean by a breeze filter 11 disposed in the respiration port 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packing apparatus for a head disk assembly, and more particularly to a packing apparatus for a head disk assembly suitable for preventing gas from entering the inside of the head disk assembly.

[0002]

2. Description of the Related Art In a magnetic disk drive, a magnetic disk, a magnetic head and the like are operated in a state of being housed in a sealed and clean case in order to prevent intrusion of dust from the outside. That is, the magnetic disk mounted on the spindle hub via the spacer ring and the magnetic head mounted on the head carriage are housed inside the case hermetically sealed by the base and the cover, and the air filter, the hygroscopic agent, the gas An adsorbent etc. is installed.

The mechanisms described above and a case accommodating the mechanisms are referred to as a head disk assembly or a head disk assembly (HDA). Care is taken to reduce dust and gas inside the case as much as possible. . The magnetic disk device has a power supply, a circuit, a fan, and the like mounted inside a housing in addition to the above-described head disk assembly. Conventionally, the magnetic disk device or the head disk assembly is used as it is in a vinyl bag or a barrier metal in order to avoid the influence of being polluted from the external environment until the magnetic disk device is used, such as during transportation or storage in a warehouse. It was put in a bag, hermetically sealed, and packed.

Although the inside of the case of the head disk assembly is manufactured with care taken to reduce dust and gas as much as possible as described above, the head disk assembly has a breathing opening, a base, a cover, and the like. The head disk assembly is provided with an opening such as an engagement portion, a hole for inspection and STW (servo track writing), and is sealed except for a breathing port after the manufacture of the head disk assembly. On the outside of the case of the head disk assembly, there is a printed circuit board, a sponge of sound absorbing material, a coating of anti-vibration material and a double-sided adhesive tape for attaching
Attached members such as an adhesive are arranged, and various parts of the magnetic disk device, such as a power supply, a circuit board, and a cooling fan, are arranged between the outside of the case of the head disk assembly and the housing.

The outside of the head disk assembly case described above is not a hermetically sealed structure, and it is difficult to adequately take measures to prevent dust and degas from all members and parts outside the head disk assembly case. However, the breathing port provided in the case of the head disk assembly is equipped with an air filter and a breathing filter that is a combination of gas adsorbents, and the head is used under normal operating conditions in a computer room or office. It is designed to keep the inside of the disk assembly case clean.

[0006]

When the above-described head disk assembly (or magnetic disk device) is packed, the head disk assembly (or magnetic disk device) is directly packed with a vinyl bag or a plastic bag through which gas and moisture do not pass. Since the head disk assembly is hermetically sealed in a barrier metal bag, the head disk assembly is isolated from the external environment. As a result, during transportation on the road (especially highways) that is affected by exhaust gas and soot, or when mixed with general miscellaneous goods, or when stored in a warehouse where a large amount of dust may adhere because it is not a living space, etc. It is possible to avoid the influence of being polluted by the external environment under a bad environment than the normal use environment.

However, since the head disk assembly (or magnetic disk device) is sealed in a vinyl bag or a barrier metal bag, depending on the storage state from packing to unpacking after manufacture, the head disk may be hard disk. The inside of the case of the assembly may be contaminated. That is, when the head disk assembly remains sealed for a long time especially in a high temperature environment in the summer, the head disk assembly may be attached to the outside of the case or between the outside of the head disk assembly case and the housing. It is highly possible that the bag is filled with corrosive gas and harmful organic gas generated from various mounted parts of the magnetic disk device, and enters into the case of the head disk assembly through the breathing port. in this case,
Since corrosive gas and harmful organic gas are successively generated in the limited space, the gas pressure rises and the gas concentration also rises remarkably. As a result, the gas concentration exceeds the gas adsorbing capacity of the gas adsorbent of the breathe filter in a short period of time, and it becomes impossible to prevent corrosive gas or harmful organic gas from entering the case of the head disk assembly. There is a disadvantage that the inside of the case of the assembly cannot be kept clean.

[0008]

It is an object of the present invention to improve the disadvantages of the above conventional example, and particularly to prevent corrosive gas or harmful organic gas generated outside the case of the head disk assembly in a packed state from entering the case. It is an object of the present invention to provide a packing apparatus for a head disk assembly in which the inside of the case of the head disk assembly is always kept clean by preventing it.

[0009]

According to the present invention of claim 1, there is provided a packaging body made of a material which is impermeable to gas and water, and the packaging body accommodates a case provided with a breathing port and the case. In a head disk assembly packing device for packing a head disk assembly composed of a magnetic head and a magnetic disk, an opening is provided in the packing body in correspondence with a breathing port of a case, and the periphery of the opening part of the packing body is also provided. A sealing means to form a sealed space between the package and the case between the case and the periphery of the breathing port of the case,
The configuration is adopted. This aims to achieve the above-mentioned object.

According to a second aspect of the present invention, there is provided a packaging body made of a material that does not allow gas and moisture to permeate therethrough, and a case provided with a breathing port by the packaging body and a magnetic head and a magnetic disk housed in the casing. A head disk assembly packing device for packing a magnetic disk device having a head disk assembly and a housing housing the head disk assembly, wherein the housing has an opening corresponding to a breathing port of a case. In addition to the above, the breathing port of the case and the opening of the housing are connected via piping, and the package is provided with an opening corresponding to the opening of the housing and around the opening of the package. A sealing means is provided between the package and the housing around the opening of the housing so as to form a sealed space by the package and the housing. This aims to achieve the above-mentioned object.

According to a third aspect of the present invention, there is provided a packaging body made of a material that does not allow gas and moisture to permeate, and the packaging body is used to remove a case provided with a breathing port and a magnetic head and a magnetic disk housed in the case. A head disk assembly packing apparatus for packing a head disk assembly comprising: an opening corresponding to a breathing opening of a case; a periphery of the opening of the packing body; and a vicinity of a breathing opening of the case. Sealing means is provided between the package and the case so as to form a closed space by the package and the case, and the outside of the package is packed with another package made of a material that does not transmit gas and moisture. The space formed by the package is filled with clean air.
This aims to achieve the above-mentioned object.

According to a fourth aspect of the present invention, there is provided a package made of a material that does not allow gas and moisture to pass therethrough, and the package includes a case provided with a breathing port and a magnetic head and a magnetic disk housed in the case. A head disk assembly packing apparatus for packing a head disk assembly comprising: an opening corresponding to a breathing opening of a case; a periphery of the opening of the packing body; and a vicinity of a breathing opening of the case. A sealing means is provided between the package and the case so as to form a closed space by the package and the case, and a breathing port is connected to a clean air container filled with clean air. This aims to achieve the above-mentioned object.

According to the first aspect of the present invention, when the head disk assembly is transported or stored in a warehouse, the head disk assembly is stored in a sealed state inside the package except for the breathing port. . That is, the breathing opening is not sealed and is in contact with the external environment of the package. In this case, corrosive gas or harmful organic gas is generated from the accessory outside the case of the head disk assembly as the temperature rises, but the corrosive gas or harmful organic gas is the case of the package and the head disk assembly. It is confined in a space that is closed by the outside.

According to the second aspect of the present invention, when transporting a magnetic disk device on which a head disk assembly is mounted or storing it in a warehouse, the magnetic disk device is placed inside the package except for the breathing port. Store in a sealed state. That is, the breathing port is not sealed but contacts the outside environment of the package through the pipe. In this case, corrosive gas and harmful organic gas are generated from the accessory parts outside the case of the head disk assembly or various mounting parts of the magnetic disk drive with the rise in temperature. It is confined in a space enclosed by the housing of the magnetic disk drive and the outside of the case of the head disk assembly.

According to the third aspect of the present invention, when the head disk assembly is transported or stored in a warehouse, the head disk assembly is stored in a sealed state inside the package except for the breathing port. At the same time, the outside of the package is housed in another package in a sealed state. In this case, corrosive gas or harmful organic gas is generated from the accessory outside the case of the head disk assembly as the temperature rises, but the corrosive gas or harmful organic gas is the case of the package and the head disk assembly. It is confined in a space that is closed by the outside. Further, since the breathing port of the head disk assembly is in contact with the clean air inside the space enclosed by the inner packing body and the outer packing body, the inside of the head disk assembly case is kept clean. It

According to the fourth aspect of the present invention, when the head disk assembly is transported or stored in a warehouse, the head disk assembly is stored in a sealed state inside the package except for the breathing port. That is, the breathing opening is not sealed and is in contact with the external environment of the package. In this case, corrosive gas or harmful organic gas is generated from the accessory outside the case of the head disk assembly as the temperature rises, but the corrosive gas or harmful organic gas is the case of the package and the head disk assembly. It is confined in a space that is closed by the outside. Also,
Since the clean air container is connected to the breathing port of the head disk assembly, the inside of the case of the head disk assembly is kept clean.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First to fourth embodiments of the present invention will be described below with reference to the drawings.

(1) First Embodiment FIG. 1 shows a packed state of a head disk assembly 1 of a packed magnetic disk device in the first embodiment. The head disk assembly 1 of the 3.5-inch disk drive form factor is a thin film magnetic head 2,3.
And a head carriage 4 on which magnetic heads 2 and 3 are mounted.
And a magnetic disk 5 as a thin film medium having a diameter of 3.5 inches
And a spindle motor 6 for rotationally driving the magnetic disk 5
And the like are housed in a case 7 having a sealed structure including a base 7A and a cover 7B.

The above-mentioned mechanisms housed inside the head disk assembly 1 and the base and cover of the head disk assembly 1 made of, for example, an aluminum alloy are sufficiently cleaned and degassed. By assembling the head disk assembly 1 in a clean environment, attention is paid to reduce dust and gas inside the head disk assembly 1 as much as possible.

A sound absorbing material 8 for reducing noise of the head disk assembly 1 and a printed circuit board for driving and recording / reproducing control of the head disk assembly 1 are provided on the lower outside of the head disk assembly 1. (Package) 9 is attached. Cover 7B of head disk assembly 1
Is provided with a breathing port 10, and the breathing port 10
A breathe filter 11 in which an air filter and a gas adsorbent are combined is mounted. Further, the head disk assembly 1 is housed in a barrier metal seal bag 12 (a bag made by laminating an aluminum foil and an organic film) that is impermeable to gas and moisture and packed in a sealed state, and only the breathing port 10 is not sealed. The barrier metal seal bag 12 is in contact with the external environment through an opening 12a.

The sound absorbing material 8 attached to the outside of the head disk assembly 1 is composed of a urethane sponge containing an additive for flame retardancy. Further, a solder resist is applied to the surface of the printed circuit board 9 mounted outside the head disk assembly 1, and passive components and active components made of various organic materials are mounted thereon. Further, a sealing material 13 (adhesive material) is formed between the periphery of the breathing opening 10 of the case 7 and the periphery of the opening 12 a of the barrier metal seal bag 12 so as to form a closed space by the case 7 and the barrier metal seal bag 12. ) Is provided.

Next, the operation of the first embodiment configured as described above will be described.

At the time of transportation or storage, the head disk assembly 1 is stored in a sealed state inside the barrier metal seal bag 12 except for the breathing port 10 as described above. In this case, the sound absorbing material 8 attached to the outside of the head disk assembly 1 is made of a urethane sponge containing an additive for flame retardation, and is attached to the outside of the head disk assembly 1. On the printed circuit board 9, a solder resist is applied, and passive components and active components made of various organic materials are mounted.
Since it is difficult to completely degas these parts, corrosive gas and harmful organic gas are generated due to the temperature rise.

By the way, when the entire head disk assembly is directly covered with a vinyl bag or a barrier metal seal bag and sealed as in the conventional packing method, a corrosive gas or harmful organic matter is confined in a limited space. Since gas is generated successively, the gas pressure rises and the gas concentration also rises significantly. The gas concentration exceeds the adsorption capacity of the gas adsorbent of the breath filter for a short period of time, and it becomes impossible to prevent the corrosive gas and the harmful organic gas from entering the inside of the head disk assembly.

However, in the method of packing the head disk assembly 1 according to the first embodiment, the corrosive gas and the harmful organic gas are closed by the barrier metal seal bag 12 and the outside of the head disk assembly 1. To the case 7 of the head disk assembly 1 from the breathing opening 10.
Corrosive gas or harmful organic gas can be prevented from entering the inside of the device. Further, although the breathing port 10 of the head disk assembly 1 comes into contact with the external environment,
With the breath filter 11 provided at 0, the inside of the head disk assembly 1 can always be kept clean with respect to a gas having a normal environmental concentration. As a result, after unpacking, the magnetic disk device incorporating the head disk assembly 1 can be immediately put into a usable state.

The head disk assembly 1 of the magnetic disk device packed by the packing method of the first embodiment and the head disk assembly of the magnetic disk device packed by the conventional packing method are, for example, from May to October. Stored in a general warehouse without air conditioning for half a year,
The results of comparing the states after unpacking are as follows.

In the conventional packing method, a corrosive gas or a harmful organic gas intrudes into the head disk assembly and is condensed as a liquid deposit on a part of the surface of the magnetic disk, the magnetic head or the like as the temperature changes. As a result, the magnetic head did not normally fly over the magnetic disk, and a head crash occurred in an extremely short period of time.

On the other hand, in the packing method of the first embodiment, the corrosive gas and the harmful organic gas do not enter the inside of the head disk assembly 1 and the magnetic disk device can be driven normally. However, there was no practical problem.

(2) Second embodiment. FIG. 2 shows a packed state of the packed magnetic disk device in the second embodiment. The same reference numerals are given to the same components as those in the first embodiment, and the description will be omitted. In the second embodiment, the head disk assembly 1, the power source 20, the cooling fan 21 and the like having the same structure as those of the first embodiment are provided in the housing 2.
2 has a structure in which a magnetic disk device mounted inside the device 2 is packed in a barrier metal seal bag 23.

The second embodiment differs from the first embodiment in that the breathing port 10 of the head disk assembly 1 and the housing 22
Is that a pipe 25 is provided between the opening 25 and the upper surface of the pipe 25. That is, the magnetic disk device equipped with the head disk assembly 1 is housed and sealed in a barrier metal seal bag 23 that does not allow gas and moisture to permeate. Only the open end of the pipe 25 provided between the barrier metal seal bag 23 and the opening 24 is in contact with the external environment through an opening 23 a provided in the barrier metal seal bag 23.

A sound absorbing material 8 and a printed circuit board 9 are attached to the outside of the head disk assembly 1 in the same manner as in the first embodiment.
Various components such as a power supply 20, a cooling fan 21, and a circuit board (not shown) are arranged between the and. Further, the housing 22
A seal material 26 (adhesive material) is provided between the airbag 10 and the barrier metal seal bag 23 so as to form a passage from the breathing port 10 to the opening 23a.

Next, the operation of the second embodiment configured as described above will be described.

At the time of transportation or storage in a warehouse or the like, the magnetic disk device having the head disk assembly 1, power supply 20, cooling fan 21 and the like mounted inside the housing 22 as described above is mounted on the barrier metal seal bag 23. Store in a sealed state inside. In this case, the sound absorbing material 8 attached to the outside of the head disk assembly 1 is made of a urethane sponge containing an additive for flame retardation, and is attached to the outside of the head disk assembly 1. Printed circuit board 9
A passive resist and an active component made of various organic materials are mounted on the inner surface of the head disk assembly 1, and a power source 20 and a cooling fan 21 are provided between the outer side of the head disk assembly 1 and the housing 22. Since various components such as a circuit board (not shown) are arranged and it is difficult to completely degas these components, corrosive gas and harmful organic gas are generated due to temperature rise.

When the entire magnetic disk device is directly covered and sealed with a vinyl bag or a barrier metal seal bag as in the conventional packing method, corrosive gas or harmful organic gas is contained in a limited space. Occur sequentially, so
As the gas pressure increases, the gas concentration also increases significantly.
The gas concentration exceeds the adsorption capacity of the gas adsorbent of the breath filter for a short period of time, and it becomes impossible to prevent the corrosive gas and the harmful organic gas from entering the inside of the head disk assembly.

However, in the packing method of the magnetic disk drive according to the second embodiment, the breathing port 10 of the head disk assembly 1 and the corrosive gas / poisonous organic gas generating space are connected to the pipe 25.
Therefore, it is possible to prevent corrosive gas and harmful organic gas from entering the case 7 of the head disk assembly 1 from the breathing opening 10. Also,
The breathing port 10 of the head disk assembly 1 comes into contact with the external environment through the open end of the pipe 25,
, The inside of the head disk assembly 1 can always be kept clean with respect to a gas having a normal environmental concentration. As a result, after unpacking, the magnetic disk device incorporating the head disk assembly 1 can be immediately put into a usable state.

The magnetic disk device packed by the packing method of the second embodiment and the magnetic disk device packed by the conventional packing method are put in a general warehouse without an air conditioner for half a year from May to October, for example. After storage, the results of comparing the states after unpacking are as follows.

In the conventional packing method, a corrosive gas or a harmful organic gas intrudes into the head disk assembly and is condensed as a liquid deposit on a part of the surface of the magnetic disk, the magnetic head or the like due to temperature change. As a result, the magnetic head did not normally fly over the magnetic disk, and a head crash occurred in an extremely short period of time.

On the other hand, in the packing method of the second embodiment, the corrosive gas and the harmful organic gas do not enter the inside of the head disk assembly 1, and the magnetic disk device can be driven normally. However, there was no practical problem.

(3) Third Embodiment FIG. 3 shows a packed state of the head disk assembly 1 of the packed magnetic disk device according to the third embodiment. The same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. . In the third embodiment, the head disk assembly 1 having the same structure as that of the first embodiment is packed in an inner barrier metal seal bag 30 that does not allow gas and moisture to pass therethrough. The portion is packed in an outer barrier metal seal bag 31 that does not allow gas and moisture to pass through.

That is, the head disk assembly 1 is double-sealed by the inner barrier metal seal bag 30 and the outer barrier metal seal bag 31. Only the breathing port 10 is not sealed, and the inner barrier metal seal bag 30 is not sealed.
Through an opening 30a provided in the inner barrier metal seal bag 30 and the outer barrier metal seal bag 31 so as to come into contact with clean air.

Next, the operation of the third embodiment configured as described above will be described.

At the time of transportation or storage, the head disk assembly 1 is housed in a sealed state inside the inner barrier metal seal bag 30 as described above, and this is further sealed inside the outer barrier metal seal bag 31. Store in state. In this case, the sound absorbing material 8 attached to the outside of the head disk assembly 1 is made of urethane sponge containing an additive for flame retardation, and is attached to the outside of the head disk assembly 1. On the printed circuit board 9,
Passive components and active components made of various organic materials are mounted with solder resist applied, and it is difficult to completely degas these components. Organic gas is generated.

By the way, when the entire head disk assembly is directly covered with a vinyl bag or a barrier metal seal bag and sealed as in the conventional packing method, corrosive gas and harmful organic substances are contained in a limited space. Since gas is generated successively, the gas pressure rises and the gas concentration also rises significantly. The gas concentration exceeds the adsorption capacity of the gas adsorbent of the breath filter for a short period of time, and it becomes impossible to prevent the corrosive gas and the harmful organic gas from entering the inside of the head disk assembly.

However, in the method of packing the head disk assembly 1 according to the third embodiment, the breathing port 10 of the head disk assembly 1 is isolated from the corrosive gas / harmful organic gas generating space, so that the breathing port is formed. It is possible to prevent corrosive gas and harmful organic gas from entering the case 7 of the head disk assembly 1 from the case 10. Further, since the breathing port 10 of the head disk assembly 1 is brought into contact with the clean air in the space closed by the inner barrier metal seal bag 30 and the outer barrier metal seal bag 31, the inside of the head disk assembly 1 is It can be kept even cleaner over a long period of time. As a result, after unpacking, the magnetic disk device incorporating the head disk assembly 1 can be immediately put into a usable state.

The head disk assembly 1 of the magnetic disk drive packed by the packing method of the third embodiment and the head disk assembly of the magnetic disk drive packed by the conventional packing method are, for example, from May to October. Over a period of six months, it was stored in a warehouse with a high concentration of sulfurous acid gas and nitrogen oxides and no air conditioning because it was adjacent to the highway, and the results after unpacking were as follows: .

In the conventional packaging method, a corrosive gas or a harmful organic gas enters the head disk assembly and is condensed as a liquid deposit on a part of the surface of the magnetic disk or the magnetic head due to a temperature change. As a result, the magnetic head did not normally fly above the magnetic disk, and a head crash occurred in a very short time.

On the other hand, in the packing method of the third embodiment, the corrosive gas and the harmful organic gas do not enter the inside of the head disk assembly 1, and the magnetic disk device can be driven normally. However, there was no practical problem.

(4) Fourth embodiment. FIG. 4 shows the packed state of the head disk assembly 1 of the packed magnetic disk device in the fourth embodiment. The same reference numerals are given to the same components as those in the first embodiment, and description thereof will be omitted. . In the fourth embodiment, the head disk assembly 1 having the same structure as that of the first embodiment is
In the same manner as in the embodiment, packing is performed with the barrier metal seal bag 12, and only the breathing port 10 of the head disk assembly 1 is not sealed, and the communication pipe 41 of the clean air bag 40 is opened in the barrier metal seal bag 12. Breathing port 1 through section 12a
The structure is connected to 0.

Next, the operation of the fourth embodiment constructed as above will be described.

At the time of transportation or storage, the head disk assembly 1 is housed in the barrier metal seal bag 12 in a sealed state as described above, and the breathing port 10 of the head disk assembly 1 is Directly connected to In this case, the sound absorbing material 8 attached to the outside of the head disk assembly 1 is made of urethane sponge containing an additive for flame retardation, and is attached to the outside of the head disk assembly 1. The printed circuit board 9 is coated with a solder resist and is also equipped with passive components and active components made of various organic materials, and it is difficult to completely degas these components, so that the temperature rises. Generate corrosive gas and harmful organic gas.

By the way, when the entire head disk assembly is directly covered and sealed with a vinyl bag or a barrier metal seal bag as in the conventional packing method, corrosive gas or harmful organic substances are limited in a limited space. Since the gas is generated sequentially, the gas concentration increases significantly as the gas pressure increases. The gas concentration exceeds the adsorption capacity of the gas adsorbent of the breath filter for a short period of time, and it becomes impossible to prevent the corrosive gas and the harmful organic gas from entering the inside of the head disk assembly.

However, in the method of packing the head disk assembly 1 according to the fourth embodiment, the breathing opening 10 of the head disk assembly 1 and the corrosive gas / harmful organic gas generating space are separated from each other, so that the breathing opening is opened. It is possible to prevent the corrosive gas and the harmful organic gas from entering the inside of the case 7 of the head disk assembly 1 from 10. Further, since the breathing port 10 of the head disk assembly 1 is directly connected to the clean air bag 40, the inside of the head disk assembly 1 can be kept clean for a long time. As a result, after unpacking, the magnetic disk device incorporating the head disk assembly 1 can be immediately put into a usable state.

The head disk assembly 1 of the magnetic disk drive packed by the packing method of the fourth embodiment and the head disk assembly of the magnetic disk drive packed by the conventional packing method are, for example, from May to October. Over a period of six months, it was stored in a warehouse with a high concentration of sulfurous acid gas and nitrogen oxides and no air conditioning because it was adjacent to the highway, and the results after unpacking were as follows: .

In the conventional packing method, a corrosive gas or a harmful organic gas intrudes into the head disk assembly and is condensed as a liquid deposit on a part of the surface of the magnetic disk, the magnetic head or the like as the temperature changes. As a result, the magnetic head did not normally fly over the magnetic disk, and a head crash occurred in an extremely short period of time.

On the other hand, in the packing method of the fourth embodiment, the corrosive gas and the harmful organic gas do not enter the inside of the head disk assembly 1, and the magnetic disk device can be driven normally. However, there was no practical problem.

In each of the above embodiments, the head disk assembly 1 or the magnetic disk device on which the head disk assembly 1 is mounted is transported under a high temperature environment in summer between the time of packing and the time of unpacking. Although it is assumed that the temperature is 40 ° C. or less and the worst case is 60 ° C. or less, the above-mentioned packing bag, sealing material (adhesive material), piping, etc. At a temperature of 60 ° C. or lower, it may be formed from a material that does not generate corrosive gas or harmful organic gas. In each of the above embodiments, a barrier metal seal bag was used as a packing bag.
A bag made of an organic film such as polypropylene and coated with carbon or metal (by vapor deposition, sputtering, or the like) on the surface to prevent static electricity may be used. Further, in each of the above embodiments, the barrier metal seal bag is used as the packing means, but a container having a function equivalent to that of the barrier metal seal bag may be used.

[0057]

As described above, according to the first aspect of the present invention, an opening is provided in the package corresponding to the breathing port of the case, and the periphery of the opening of the package and the breathing port of the case are provided. Sealing means is provided between the package and the case to form a sealed space between the package and the case. Corrosive gas and harmful organic gas are generated from the accessory parts outside the case of the head disk assembly as the temperature rises. Even in this case, corrosive gas and harmful organic gas are confined in the enclosed space formed by the package and the outside of the case, so that corrosive gas and harmful organic gas are surely prevented from entering the case inside the head disk assembly. As a result, the inside of the case of the head disk assembly can be kept clean at all times, so that it can be used immediately after unpacking the head disk assembly. It can be brought into a state, an effect that.

According to the present invention, an opening is provided in the housing of the magnetic disk device corresponding to the breathing port of the case, and a pipe is provided between the breathing port of the case and the opening of the case. The package is provided with an opening corresponding to the opening of the housing, and a sealed space is formed between the periphery of the opening of the package and the periphery of the opening of the housing by the packing and the housing. Thus, even when corrosive gas or harmful organic gas is generated due to temperature rise from accessory parts outside the case of the head disk assembly or various mounting parts of the magnetic disk drive, the corrosive gas or The harmful organic gas is confined in the enclosed space formed by the housing and case, so that corrosive gas and harmful organic gas can be reliably prevented from entering the case of the head disk assembly. Accordingly, since the interior of the case head disk assembly can be always kept clean, after releasing the packaging head disk assembly can immediately and usable state, an effect that.

According to the third aspect of the present invention, an opening is provided in the package corresponding to the breathing port of the case, and the package is provided between the periphery of the opening of the package and the periphery of the breathing port of the case. A sealing means is provided so as to form a closed space by the case, and the outside of the package is packed with another package made of a material impermeable to gas and moisture, and formed by the package and another package. Since the space was filled with clean air, even if corrosive gas or harmful organic gas was generated due to temperature rise from accessories outside the case of the head disk assembly, the corrosive gas or harmful organic gas would not As a result of being confined in the formed closed space, it is possible to reliably prevent corrosive gas and harmful organic gas from entering the case of the head disk assembly, and this It is possible to keep the inside of the case of de-disk assembly always clean, after releasing the packaging head disk assembly can immediately and usable state. Furthermore, since the breathing opening of the head disk assembly is in contact with the clean air inside the space formed by the inner package and another outer package, the inside of the case of the head disk assembly is kept for a long time. The effect is that it can be maintained even more clean.

According to the present invention, an opening is provided in the package corresponding to the breathing port of the case, and the package is provided between the periphery of the opening of the package and the periphery of the breathing port of the case. In addition, a sealing means is provided so as to form an enclosed space by the case, and a clean air container filled with clean air is connected to the breathing port, so that the temperature rises from the accessory parts outside the case of the head disk assembly. Even when corrosive gas or harmful organic gas is generated, the corrosive gas or harmful organic gas is confined in the enclosed space formed by the package and the case. Gas can be reliably prevented from entering, and the inside of the case of the head disk assembly can always be kept clean. After releasing the packaging can be immediately and usable state. Further, since the clean air container is connected to the breathing port of the head disk assembly, there is an effect that the inside of the case of the head disk assembly can be kept more clean for a long time.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a packed state of a head disk assembly of a magnetic disk device according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating a packing state of a magnetic disk device according to a second embodiment.

FIG. 3 is an explanatory diagram showing a packed state of a head disk assembly of a magnetic disk device in a third embodiment.

FIG. 4 is an explanatory diagram showing a packed state of a head disk assembly of a magnetic disk device according to a fourth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Head disk assembly 2, 3 Magnetic head 5 Magnetic disk 7 Case 10 Breathing opening 11 Breeze filter 12, 23 Barrier metal seal bag as packing 12a, 30a Opening 13, 26 Sealing material as sealing means 22 Housing 24 Opening Part 25 Piping 30 Inner barrier metal seal bag as package 31 Outer barrier metal seal bag as package 40 Clean air bag as clean air container

Claims (4)

[Claims] 1. A head disk assembly comprising: a case provided with a breathing port; and a magnetic head and a magnetic disk housed in the case. In the packing apparatus for a head disk assembly, the opening is provided in the packing body corresponding to the breathing port of the case, and the periphery of the opening of the packing body and the vicinity of the breathing port of the case. A packing device for a head disk assembly, wherein a sealing means is provided between the packing member and the case so as to form a sealed space by the packing member and the case. 2. A head disk assembly comprising a case made of a material impermeable to gas and water, a case provided with a breathing port, a magnetic head and a magnetic disk housed in the case by the packing body. In a packing apparatus for a head disk assembly, which is configured to pack a magnetic disk device including a housing housing the head disk assembly, an opening is provided in the housing corresponding to a breathing port of the case. Together, the breathing port of the case and the opening of the casing are connected via a pipe, and the package is provided with an opening corresponding to the opening of the housing, and Sealing means is provided between the periphery of the opening and the periphery of the opening of the housing so as to form a sealed space by the packaging body and the housing. Packing apparatus. 3. A head disk assembly comprising a case made of a material impermeable to gas and moisture, a case provided with a breathing port, a magnetic head and a magnetic disk housed in the case, by the case. In the packing device for head disk assembly, the packing body is provided with an opening corresponding to the breathing opening of the case, and the periphery of the opening of the packing body and the circumference of the breathing opening of the case. A sealing means is provided between the packaging body and the case so as to form a sealed space, and the outside of the packaging body is packaged with another packaging body made of a material that does not permeate gas and moisture. A packing device for a head disk assembly, characterized in that the space formed by the other packing body is filled with clean air. 4. A head disk assembly comprising a case made of a material impermeable to gas and moisture, a case provided with a breathing port, a magnetic head and a magnetic disk housed in the case by the packing body. In the packing device for head disk assembly, the packing body is provided with an opening corresponding to the breathing opening of the case, and the periphery of the opening of the packing body and the circumference of the breathing opening of the case. A head disk assembly characterized in that a sealing means is provided between the packaging body and the case so as to form a closed space, and a clean air container filled with clean air is connected to the breathing port. Packing equipment.