JP2004055013A - Data storage apparatus and casing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data storage apparatus capable of increasing its shock resistance and environmental resistance, and a casing used therefor. <P>SOLUTION: The data storage apparatus 10 is provided with a storage device 14 incorporating a storage medium to store data, and a casing for surrounding the storage device 14 to seal it. Thus, the apparatus is not adversely affected by the adverse external environment of the casing. For example, even when the external air pressure, temperature or humidity of the casing is changed, or a corrosive gas is generated outside the casing, no adverse influence is given to the storage device 14 in the sealed casing. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a data storage device for storing digital data, for example.
[0002]
[Prior art]
2. Description of the Related Art In recent years, demand for personal computers and their peripheral devices has rapidly increased, and for example, demand for hard disk drives (Hard Disk Drives) (hereinafter referred to as HDDs) as external storage devices used for these devices. Is increasing. This is probably because the HDD has a larger storage capacity and higher affinity with the network (higher access time) and a lower unit cost per bit than other storage devices, for example. In the future, this feature will become more apparent, and it is expected that the use of HDDs as storage devices will increase.
[0003]
Also, as digitalization of music and video data progresses, opportunities for storing data in HDDs are increasing. For this reason, it is considered that the number of applications that take the HDD outside like the conventional boombox with headphones will increase more and more in the future.
[0004]
As described above, HDDs are more useful than other storage devices, but they are weak in shock resistance and environmental resistance, so they are not storage devices that can be carried anywhere at any time, unlike conventional radio-cassettes with headphones. . For example, in terms of impact resistance, in a general HDD, when a gravitational acceleration of about 800 G is applied during non-operation, a spindle motor, which is a precision component, is scratched, and cannot be continuously rotated without uneven rotation speed. . 800G corresponds to, for example, an impact when dropped from 10 cm on a vinyl tile. In operation, it has a shock resistance of only about 200 G, which corresponds to a shock dropped from a height of 5 cm on a vinyl tile. In this case, if you accidentally drop it while carrying outdoors, it will definitely break. Such a non-shock-resistant product must be said to be unsuitable for an application to be taken outdoors.
[0005]
In order to solve such a problem, many products have been put on the market, in which a shock absorbing material is arranged around the HDD so as to be resistant to a drop impact. However, they do not have environmental resistance as described below.
[0006]
[Problems to be solved by the invention]
In a HDD, a flying slider on which a recording / reproducing sensor is mounted floats above a disk-shaped recording medium at an extremely low height of about 20 nm by air pressure. In addition, although a protective film having a thickness of 10 nm or less is applied to these media and sensors so as not to deteriorate the characteristics, in order to improve the recording / reproducing characteristics, the flying height and the thickness of the protective film are limited. To make it smaller. As a result, such an ultra-thin protective film may have pinholes, or may be damaged when the flying slider comes into contact with the medium. If a corrosive gas is adsorbed on such pinholes or scratches, rust is generated from that location, leading to loss of data.
[0007]
In addition, even when there is no pinhole or scratch, the corrosive gas and the moisture may react with each other to generate a compound on the surface of the storage medium. In such a case, since the flying height of the flying slider flying over the medium for recording and reproducing data is extremely low, the product and the flying slider collide with each other, and the flying slider falls and is damaged on the medium. In a worst case or in a tragic case, the recording / reproducing sensor mounted on the flying slider may be broken, and recording and reproduction cannot be performed again.
[0008]
Further, considering the influence of the change in air pressure on the HDD, for example, as the air pressure decreases, the HDD has a characteristic that the flying height of the flying slider decreases, and as the air pressure increases, the flying height increases. If the flying height is too small, the flying itself becomes unstable and it will crash. Therefore, unless the minimum pressure is specified, the function of the HDD cannot be guaranteed. A general HDD guarantees its use even at a high altitude of 3,048 m. This corresponds to 0.7 atm. Therefore, it cannot be used under 0.7 atm. However, it is not uncommon in Japan to live in highlands of more than 3,048 m, even in Japan. In addition, the European Alps, a world-famous tourist destination, is at a high altitude of 4,000 m to 5,000 m. It is strange to not bring a video camcorder or headphone stereo using HDD to this tourist spot. Therefore, it is necessary to take measures that can be used in such a highland (at least 5,000 m).
[0009]
In view of the circumstances described above, an object of the present invention is to provide a data storage device capable of improving the shock resistance and environmental resistance of a data storage device, particularly a storage device such as a hard disk drive, and the data storage device. An object of the present invention is to provide a housing used for an apparatus.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a data storage device of the present invention includes a storage device having a storage medium for storing data therein, a housing enclosing and enclosing the storage device, and at least one of a periphery of the storage device. And a filter that absorbs at least one of corrosive gas, corrosive ions, and moisture generated in the housing.
[0011]
According to the present invention, since the storage device is hermetically sealed by the housing, the storage device is not adversely affected by a bad environment outside the housing. For example, even when the pressure, temperature, and humidity change outside the housing, or when a corrosive gas is generated outside the housing, the storage device inside the sealed housing does not have any adverse effect. Here, the storage medium for storing data is, for example, particularly a disk-type storage medium, and it is preferable that a sensor for performing recording and reproduction on the disk is arranged at a predetermined space or distance. . In the present invention, for example, dust, dust, or corrosive gas molecules, etc. are prevented from adhering and mixing in such a predetermined space or distance, thereby preventing damage to the device and data loss. is there. In addition, the provision of the cushioning member disposed at least at a part of the periphery of the storage device increases the shock resistance. For example, even if the data storage device of the present invention is taken out of the field and dropped by mistake, the data storage device is broken. Never. Furthermore, by providing a filter that absorbs at least one of organic gas, corrosive gas, corrosive ions, and moisture generated in the housing, it is affected by organic gas, corrosive gas, and the like generated outside the housing. Not only that, the gas and moisture generated in the sealed housing can be absorbed by the filter. Thus, it is possible to prevent the corrosive gas, moisture, and the like from flowing into the storage device, and to avoid an adverse effect on the storage medium. Further, for example, by arranging such a filter near a ventilation or pressure adjustment hole provided on the surface of the storage device, corrosive gas or the like can be efficiently removed. This is because there is a lot of convection such as corrosive gas which tends to flow into the storage device in the vicinity of such a ventilation hole.
[0012]
Further, by disposing the filter around the ventilation hole, the corrosive gas and the like in the housing can be more efficiently absorbed. The shape of such a filter may be a donut shape. Alternatively, if the filter is arranged in a C-shape around the ventilation hole, the storage device is sealed in the housing, and the C-shaped filter contacts the inner wall of the housing. , The C-shaped notch can be used as an air passage. Thus, the filter can efficiently absorb the gas and does not hinder the pressure adjustment of the storage device.
[0013]
In one embodiment of the present invention, the housing surrounds a part of the surface of the storage device, a first surrounding member, and surrounds a surface other than a part of the surface of the storage device; And a second surrounding member having a material different from that of the second surrounding member. For example, if the material of the first surrounding member is metal and the material of the second surrounding member is resin, the strength of the housing can be increased by the first surrounding member made of metal. On the other hand, the reason why the second surrounding member is made of resin is to ensure insulation of a connector for making an electrical connection between the storage device and the outside of the housing, for example. Further, by including the carbon fiber material in the second surrounding member made of resin, the strength of the housing can be increased while maintaining the insulating property, and the impact resistance can be improved.
[0014]
A housing of the present invention includes a surrounding area surrounding a storage device incorporating a storage medium for storing data, and a connection unit for making an electrical connection between the storage device surrounded by the surrounding area and the outside. And
[0015]
According to the present invention, the storage device that needs electrical connection with the outside is surrounded and sealed in the surrounding region of the housing. Thereby, it can be prevented from being adversely affected by a bad environment outside the housing. For example, even if the pressure or humidity changes outside the housing or a corrosive gas is generated outside the housing, the storage device inside the sealed housing does not have any adverse effect. Also, for example, by using a configuration in which the electrical connection pin of the connection portion is integrally molded with the second surrounding member, the hermeticity of the housing is improved as compared with the case where the connection pin is pressed into the housing. And contributes to improving the environmental resistance of the device.
[0016]
Further features and advantages of the present invention will become more apparent by referring to the accompanying drawings and the description of the embodiments of the present invention.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a perspective view of a data storage device according to the present invention, and FIG. 2 is an exploded perspective view thereof. The data storage device 10 has, for example, an upper shell 11 and a lower shell 12 as a housing for surrounding and sealing an HDD (hard disk drive) 14 as a storage device. Around the HDD 14, a buffer member 15 made of, for example, porous rubber or resin is arranged. Specifically, as shown in FIG. 2, the cushioning member 15 has a fitting hole 15a formed about the size of the HDD 14, and a flexible wiring of the HDD 14 in a state where the HDD 14 is fitted in the fitting hole 15a. 18 is provided. As a result, an external impact on the HDD 14 is absorbed.
[0018]
The lower shell 12 is provided with a concave portion 12b formed to be about the size of the buffer member 15 and for accommodating the buffer member 15. A connector 19 for electrically connecting the flexible wiring 18 to the outside in a state where the buffer member 15 in which the HDD 14 is fitted is accommodated in the recess 12b is provided on a part of the wall surface of the recess 12b. I have.
[0019]
Here, since a general connector press-fits a terminal into a resin base material, a gap is generated between the terminal and the base material. Therefore, the connector itself has no confidentiality. Therefore, in the present embodiment, in order to improve confidentiality, the terminal is manufactured by insert molding which is put in a mold for molding the terminal in advance. That is, the lower shell 12 and the connector 19 are integrally formed. Thus, a connector having a pressure resistance of up to 0.5 atm (equivalent to 5,000 m) can be provided.
[0020]
FIG. 3 is an enlarged cross-sectional view of a joint portion between the upper shell 11 and the lower shell 12. For example, ten screw holes 11a are formed in the upper shell 11, and ten screw holes 12a are also formed in the upper surface 12d of the lower shell 12 at positions corresponding to the screw holes 11a. A screw 35 is screwed into these screw holes 11a and 12a from the upper surface of the upper shell 11, and the upper shell 11 and the lower shell 12 are joined. A groove 12c formed along the rectangular shape of the upper surface portion 12d is provided in the upper surface portion 12d of the lower shell 12, and a packing 13 is fitted into the groove 12c. The packing 13 is made of, for example, rubber or the like, and has a cross-section, for example. After the protrusion 13a of the packing 13 is fitted into the groove 12c, the upper shell 11 and the lower shell 12 are joined to hermetically seal the HDD 14.
[0021]
Here, in order to prevent the housing 30 composed of the upper shell 11 and the lower shell 12 from expanding when the outside air pressure is low, a material as hard as a metal is selected for the upper shell 11 and the lower shell 12. Is preferred. However, considering the product cost, if a hard resin such as a resin containing 5% to 12% carbon fiber is selected, both high strength and low cost can be satisfied. Alternatively, since the connector 19 is integrally formed with the lower shell 12 as described above, only the lower shell 12 may be made of a resin containing carbon fiber in order to ensure insulation of the lower shell 12. With such a configuration, the strength of the housing 30 can be increased while maintaining the insulation properties, and the shock resistance and the pressure resistance can be improved.
[0022]
FIG. 4 is an exploded perspective view showing an example of the HDD 14 shown in FIG. 1 and FIG. The HDD 14 is a typical built-in HDD, and the internal device of the main body 25 is hermetically sealed by attaching the cover 21 to the main body 25 with screws (not shown). A plurality of disk-shaped magnetic disks 22 serving as storage media are incorporated in the main body 25 so as to be rotatable by a spindle motor 23. A plurality of flying sliders 27 each having a recording / reproducing sensor (not shown) are provided on each magnetic disk 22 so as to be movable in a horizontal direction by an access arm 24. In addition, a hole 21a for ventilation or air pressure adjustment is formed in the upper surface of the cover 21, and a pouch filter 17 is mounted near the hole 21a.
[0023]
Here, the operation and effect of the pouch filter 17 in the present embodiment will be described in detail.
[0024]
The pouch filter is a filter in which activated carbon particles are wrapped in a non-woven fabric. In particular, the pouch filter is a filter that adsorbs moisture, sulfide gas, and nitriding gas, and the main component is activated carbon. The pouch filter has a function of adsorbing moisture, organic substances, ion gas, and corrosive gas and removing them from air when air passes through the filter by convection or the like. In the present embodiment, since the HDD 14 is sealed by the housing 30, invasion of air from the outside of the housing 30 can be avoided. On the other hand, the present inventor generates those gases and the like in the housing 30. I found the possibility.
[0025]
Since the cushioning member 15 is rubber, it is formed of an organic substance. When foamable rubber is used as the cushioning member, the foamable rubber has a large surface area and a large amount of organic gas is generated. When these gases are generated, they stay in the enclosure 30 in the closed space forever, and depending on the amount of generation, they are attached to the breather filter (generally, for example, below the hole 21a (the inner back side of the upper shell 11)). The filter for adjusting the internal pressure and the filter for cleaning the air) is saturated and enters the housing 30. In the HDD, even a small amount of gas causes contact between the flying slider and the disk.
[0026]
Therefore, in the present embodiment, the pouch filter 17 is enclosed in the housing 30 together with the HDD 14, and the corrosive gas and the like generated in the housing 30 are removed.
[0027]
The pouch filter hardly emits trapped gas even at a temperature of 100 ° C. Since the storage temperature of the HDD is about 65 ° C., if the gas is not released up to 100 ° C., the specification is sufficient. Activated carbon can adsorb a gas of about 10% of its own weight, so if activated carbon is bundled in advance with the amount of gas released from a buffer member, a flexible printed circuit board, or a case material, it can be generated. All the corrosive gases can be adsorbed. In the present embodiment, by using a combination of the sealed casing 30 and the pouch filter 17 of the present invention, an effect obtained is obtained as compared with the case where a pouch filter is used in a conventional unsealed space. It is very different. In the present embodiment, the amount of corrosive gas generated is a closed space, and the materials used in the space, that is, the materials of the buffer member 15 and the flexible printed circuit board 18 are apparent in advance. Then, the amount of activated carbon of the pouch filter 17 is calculated, whereby the corrosive gas, organic gas and the like generated completely can be removed. On the other hand, when the space is not a closed space, the amount of corrosive gas generated differs depending on the use environment.In some cases, an unnecessary amount of the pouch filter is installed. Since the amount is smaller than the amount generated, the corrosive gas cannot be removed, and data may be destroyed. This cannot guarantee environmental reliability very much. As in the configuration of the data storage device 10 of the present embodiment, the environmental reliability of the data storage device equipped with the HDD can be guaranteed only by combining the closed space and the pouch filter 17. In particular, in the present embodiment, the pouch filter 17 is disposed, for example, in the vicinity of the hole 21a where air convection is relatively large, so that corrosive gas and the like can be efficiently removed.
[0028]
5 and 6 show another embodiment of such a pouch filter.
[0029]
In FIG. 5, the pouch filter 31 is arranged in a donut shape around the hole 21 a on the HDD 14. This makes it possible to more efficiently absorb corrosive gas and the like generated in the housing.
[0030]
In FIG. 6, a pouch filter 32 having a planar C-shape is arranged around the hole 21a. The notch 32a of the C-shaped pouch filter 32 is used, for example, when the HDD 14 is sealed with the housing 30 and the C-shaped pouch filter 32 contacts the wall surface inside the upper shell 11. The notch 32a can be used as an air passage. As a result, gas can be efficiently absorbed, and the pressure adjustment inside the HDD 14 is not hindered.
[0031]
The data storage device in which the HDD is sealed in the housing 30 in this manner can be used by connecting to various electronic devices, such as a computer, a video recorder, an audio recorder, and a still camera.
[0032]
Next, more specific examples and experimental results of the present invention will be described with reference to the drawings and figures, and the operational effects of the data storage device according to the present invention will be described.
[0033]
(Example 1)
In this embodiment, a 2.5-inch HDD is used, and an elastomer is used as a cushioning member. Rubber packing was used as the packing.
[0034]
First, in order to check whether or not the inside is sealed by the housing, the assembled data storage device 10 is put into, for example, a decompression chamber, and the pressure from atmospheric pressure to 0.3 atm (corresponding to an altitude of 8,000 m). Tested. At this time, if the hermeticity is not maintained, the housing does not expand under a reduced pressure environment. Therefore, by measuring the amount of expansion of the housing under a reduced pressure environment, it is possible to check the hermeticity of the housing. FIG. 7 shows the expansion amount of the housing under such a reduced pressure environment. As can be seen from the figure, the amount of expansion increases as the pressure is reduced. This indicates that the housing used in this embodiment is a housing that maintains airtightness.
[0035]
Next, an impact test is performed. In the impact test, the housing is freely dropped on a vinyl tile, and the gravitational acceleration applied to the housing and the gravitational acceleration applied to the HDD protected by the housing and the cushioning material are measured using an acceleration pickup. Perform the measurement. FIG. 8 shows the results of the impact test. The horizontal axis represents the gravitational acceleration applied to the housing, and the vertical axis represents the gravitational acceleration applied to the HDD. As can be seen from this figure, the gravitational acceleration applied to the housing can be suppressed to about 1/10. From this, it can be seen that the shock resistance of the data storage device according to the present embodiment is secured.
[0036]
Further, a corrosion gas test is performed by using the casing having the tightness and impact resistance. The corrosion gas test is performed in the following procedure.
[0037]
As the corrosive gas, four types of SO2, H2S, NO2, and Cl are used, and their concentrations are 1.4 ppm, 1.4 ppm, 0.07 ppm, and 0.07 ppm, respectively. The corrosive gas of each of these concentrations flows into the chamber so that the concentration can always be maintained. In this corrosive gas environment, a temperature and humidity environment of 35 ° C. and 90% is added. After 96 hours of storage in these environments, the magnetic disk is removed from the data storage device, and the presence or absence of corrosive gas in the device is determined by analyzing the corrosive gas components attached to the disk surface. . At this time, as a comparative example, a corrosion gas test is performed without a built-in 2.5 ″ HDD placed in the housing. The results are shown in FIG.
[0038]
As can be seen from FIG. 9, the corrosive gas component adhering to the disk taken out of the data storage device according to the present invention contained in the sealed housing is compared with the corrosive gas component adhering to the disk of the built-in HDD alone. Is less. This is because an external corrosive gas component does not come into contact with the HDD because the housing is kept closed. In this experiment, a remarkable effect was particularly exhibited for SO2.
[0039]
Conventionally, a filter was attached to the HDD. This is based on the assumption that the HDD is used in an office environment. It was not assumed that HDDs would be used at intersections where traffic was heavy and traffic was heavy. In contrast, as can be seen from the results of this experiment, for example, even when the HDD is used for four consecutive days in a hot spring resort where SO2 gas is frequently generated, there is no effect on the data storage device according to the present invention. Conventional HDDs cannot be guaranteed to be used outdoors such as in hot springs.
[0040]
(Example 2)
A gas test is performed on the data storage device including the pouch filter in the housing of the data storage device used in the first embodiment. The pouch filter used this time has a rectangular parallelepiped shape of 15 mm × 10 mm × 2 mm. This pouch filter is attached near the air pressure adjusting hole of the HDD. In Example 1, a component conscious of the outside air was selected as the corrosive gas. As a result, no gas was mixed into the housing from the outside. Therefore, this time, a gas test was performed on the gas generated from the inside. The same temperature and humidity environment and storage time as in Example 1 were employed, but no gas components were added, and only those generated from the inside were used.
[0041]
Before performing the gas test, the gas generated by the components constituting the data storage device according to the present invention is analyzed. When analyzing the generated gas, the storage time was used under the same temperature and humidity environment as in Example 1. FIG. 10 lists the gases generated from the parts, and FIG. 11 shows the results of the gas test. For comparison, the results of a gas test of the data storage device according to the present invention without the pouch filter used in Example 1 are also shown.
[0042]
As can be seen from FIG. 11, the data storage device with the pouch filter has less gas components adhering to the disk. On the other hand, as for the gas component adhering to the disk of the data storage device without the pouch filter, a small amount of gas which is considered to be generated from the housing, the buffer material, and the flexible wiring is detected. From this, it can be seen that, by putting the pouch filter in the housing, the gas generated from the component parts can be adsorbed, and the amount of adhesion to the disk can be suppressed.
[0043]
Also, the humidity in the housing was measured at the same time during the storage time, and the results are shown in FIG. As can be seen from this figure, the inside of the housing with the pouch filter has a humidity of less than 10% after 96 hours. On the other hand, the humidity in the case without the pouch filter is almost constant and does not change. Corrosion is said to proceed with the presence of corrosive gases and moisture. By placing a pouch filter in the housing, both gas and moisture can be removed from the housing. Therefore, the sealed casing prevents the ingress of corrosive gas and moisture from the outside, and the pouch filter is bundled with the casing to remove the generated gas and moisture from the inside, further improving environmental resistance It can be seen that can be secured.
[0044]
The present invention is not limited to the embodiments described above, and various modifications are possible.
[0045]
For example, in the above-described embodiments and examples, a casing that is divided into an upper shell and a lower shell at the time of assembly is used, but there is no correlation between this structure and the present invention. It may be divided. The front and rear parts may be, for example, a drawer type in which one shell is slidably housed in one shell. The functions of the housing include shutting off the external air from the inside, protecting the HDD from impact, and suppressing the expansion amount as much as possible when the external air pressure drops.
[0046]
Further, in the present embodiment and the embodiment, rubber, resin, and the like are used for the cushioning member and the packing. However, the material is not limited thereto, and any material may be used as long as the material satisfies the function. As the pouch filter, a single rectangular parallelepiped, donut or C-shaped filter is used, but the shape and the number of the pouch filters can be appropriately changed according to the volume and shape of the closed space in the housing.
[0047]
The storage device is not limited to the HDD, and the present invention can be applied to a device having a built-in optical disk.
[0048]
【The invention's effect】
As described above, according to the present invention, it is possible to improve the shock resistance and environmental resistance of a data storage device, particularly a storage device such as a hard disk drive.
[Brief description of the drawings]
FIG. 1 is a perspective view of a data storage device according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the data storage device shown in FIG.
FIG. 3 is an enlarged sectional view of a connection portion of a housing.
FIG. 4 is an exploded perspective view of a built-in hard disk drive according to one embodiment.
FIG. 5 is a perspective view of a built-in hard disk drive to which a pouch filter according to another embodiment is attached.
FIG. 6 is a perspective view of a built-in hard disk drive to which a pouch filter according to still another embodiment is mounted.
FIG. 7 is a graph showing a measurement result of an expansion amount of a housing under a reduced pressure environment.
FIG. 8 is a graph showing an experimental result of an impact test.
FIG. 9 is a table showing the amount of corrosive gas attached to a disk.
FIG. 10 is a table showing an amount of gas generated from each component of the data storage device according to the present invention.
FIG. 11 is a table comparing gas amounts with and without a pouch filter.
FIG. 12 is a table comparing the humidity in the housing with respect to the storage time with and without the pouch filter.
[Explanation of symbols]
10. Data storage device
11 ... Upper shell
12 ... Lower shell
14 ... Hard disk drive
15 ... cushioning member
17, 31, 32 ... Pouch filter
18. Flexible printed circuit board
19… Connector
21 ... Cover
21a ... hole
22 ... Magnetic disk
30 ... housing

Claims (11)

A storage device incorporating a storage medium for storing data,
A housing that surrounds and seals the storage device;
A buffer member disposed at least partially around the storage device;
A data storage device, comprising: a filter for absorbing at least one of corrosive gas, corrosive ions, and moisture generated in the housing. The data storage device according to claim 1, wherein
The data storage device, wherein the filter is arranged near a ventilation hole provided on a surface of the storage device. 3. The data storage device according to claim 2, wherein
The data storage device, wherein the filter is disposed around the ventilation hole. The data storage device according to claim 3, wherein
The data storage device, wherein the filter is disposed in a C shape around the ventilation hole. The data storage device according to claim 1, wherein
The housing is
A first surrounding member surrounding a part of the storage device surface;
A data storage device, comprising: a second surrounding member surrounding a surface other than a part of the storage device surface and having a material different from a material of the first surrounding member. The data storage device according to claim 5, wherein
A data storage device, wherein the material of the first surrounding member is metal, and the material of the second surrounding member is resin. The data storage device according to claim 1, wherein
A data storage device, wherein the storage medium is a disk-type storage medium. An surrounding area surrounding a storage device incorporating a storage medium for storing data;
A housing, comprising: a connection portion for making an electrical connection between the storage device surrounded by the surrounding region and the outside. The housing according to claim 8, wherein
A first surrounding member surrounding a part of the storage device surface;
A housing, comprising: a second surrounding member surrounding a surface other than a part of the storage device surface and having a material different from a material of the first surrounding member. The housing according to claim 9,
A case wherein the material of the first surrounding member is metal, and the material of the second surrounding member is resin. The housing according to claim 8, wherein
The housing, wherein the connection portion includes a connection pin integrally formed with the second surrounding member.

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