Space-use openable dustproof case

Abstract

To prevent regolith from adhering to a deployment structure before the deployment structure is deployed in outer space in which gravity and regolith exist.SOLUTION: An openable dust-proof case 20 for use in outer space is opened or closed in the outer space and includes a storage part 1, a cover part 2, and a hinge 3. A deployment structure 4, a structure which is opened or closed in the outer space, is stored in the storage part 1. The cover part 2 covers an opening provided at the storage part 1 to form a sealed space at the interior of the openable dust-proof case 20 for use in the outer space. The hinge 3 couples the storage part 1 with the cover part 2 so that the cover part 2 can be opened or closed.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to an opening and closing dust-proof case for space use.

Background Art

[0002] In recent years, development plans for space where gravity and regolith (sand and gravel) exist, such as the lunar surface or asteroids, have been on the verge of materialization. In such development plans, large space deployment structures that perform deployment and storage operations multiple times in space, such as mobile solar panels, are essential. As a specific example, in order to mount a large deployment structure such as a solar panel on a spacecraft such as a lunar rover and deploy and store it multiple times, a holding and release function for withstanding the environment (such as rocket launch and lunar landing) until landing on the lunar surface, a holding and release function during transportation to the destination on the lunar surface, and measures against regolith during deployment after arriving at the destination are important. In particular, the mechanism for measures against regolith becomes a very complicated mechanism when there are multiple movable parts like in a deployment structure. Also, in solar cells etc., there is a possibility that main performances such as power generation efficiency may decrease due to the adhesion of regolith.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Patent Document 1 discloses a deployment structure. According to the deployment structure disclosed in Patent Document 1, there is a problem that it is impossible to prevent regolith from adhering to the deployment structure before deploying the deployment structure in space where gravity and regolith exist. [[ID=##]]An object of the present disclosure is to prevent regolith from adhering to a deployment structure before deploying the deployment structure in space where gravity and regolith exist. [Means for solving the problem]

[0005] The space-use openable dustproof case relating to this disclosure is A space-use openable dustproof case that opens and closes in outer space, A storage compartment in which a deployable structure, which is a structure that opens and closes in outer space, is housed, A cover portion that seals the inside of the space-use openable dustproof case by covering the opening of the storage portion, The storage section and the cover section are connected by a hinge that allows the cover section to be opened and closed. It is equipped with. [Effects of the Invention]

[0006] According to this disclosure, the storage compartment and cover of the space-use retractable dustproof case make the inside of the space-use retractable dustproof case a sealed space. Therefore, according to this disclosure, in the space environment where gravity and regolith exist, it is possible to prevent regolith from adhering to the deployable structure before the deployable structure is deployed. [Brief explanation of the drawing]

[0007] [Figure 1] This figure shows an example configuration of the openable / closed dustproof case 20 for space use according to Embodiment 1, where (a) shows the closed state and (b) shows the open state. [Figure 2] This diagram shows the unfolding of the deployable structure 4 according to Embodiment 1, where (a) shows the unfolding process and (b) shows the unfolded state. [Figure 3] A diagram showing an example configuration of a space-use openable dustproof case 20 according to Embodiment 1. [Figure 4] A diagram showing an example configuration of a space-use openable dustproof case 20 according to Embodiment 1. [Figure 5] A diagram showing an example configuration of a space-use openable dustproof case 20 according to Embodiment 1. [Figure 6]This figure shows an example of the configuration of a space-use openable dustproof case 20 according to Embodiment 1, where (a) is a cross-sectional view in a half-open state and (b) is a cross-sectional view in a closed state. [Figure 7] This figure illustrates an embodiment of the space-use openable dustproof case 20 according to Embodiment 1, where (a) shows the dustproof case in the stored state, (b) shows the dustproof case in the deployed state, (c) shows the open state, and (d) shows the deployed state of the deployable structure. [Figure 8] A diagram illustrating an example of a space-use openable dustproof case 20 according to Embodiment 1. [Modes for carrying out the invention]

[0008] In the description and drawings of the embodiments, the same elements and corresponding elements are denoted by the same reference numeral. The descriptions of elements denoted by the same reference numeral are omitted or simplified as appropriate.

[0009] Embodiment 1. This embodiment will now be described in detail with reference to the drawings.

[0010] ***Explanation of the structure*** Figure 1 shows an example configuration of the space-use retractable dustproof case 20. Figure 1(a) shows the closed state of the space-use retractable dustproof case 20, and Figure 1(b) shows the open state of the space-use retractable dustproof case 20. In the closed state, the inside of the space-use retractable dustproof case 20 is sealed by the cover part 2. In the open state, the space-use retractable dustproof case 20 is not in the closed state. As shown in Figure 1, the space-use retractable dustproof case 20 comprises a storage part 1, a cover part 2, and a hinge 3. The space-use retractable dustproof case 20 is opened and closed in outer space. The method of dustproofing the deployable structure 4 using the space-use retractable dustproof case 20 constitutes a dustproofing method. The deployable structure 4 is stored in storage compartment 1. Deployable structure 4 is a structure that opens and closes in outer space. Hereafter, outer space will be assumed to be the lunar surface. The cover section 2 is a lid corresponding to the storage section 1, and by covering the opening of the storage section 1, it creates a sealed space inside the space-use openable dustproof case 20. When closed, the storage section 1 and the cover section 2 seal the inside of the space-use openable dustproof case 20. The hinge 3 is attached to the storage section 1 and the cover section 2, and connects the storage section 1 and the cover section 2 so that the cover section 2 can be opened and closed. By closing the cover section 2 and sealing the interior of the space-use retractable dustproof case 20, the deployable structure 4 is protected from regolith adhesion from the launch of the rocket carrying the space-use retractable dustproof case 20 until the spacecraft 11 carrying the space-use retractable dustproof case 20 lands on the lunar surface, and from the time the spacecraft 11 carrying the space-use retractable dustproof case 20 lands on the lunar surface until the spacecraft 11 transports the space-use retractable dustproof case 20 to its destination. The spacecraft 11 is, in specific examples, a lunar rover.

[0011] Figure 2 shows the deployment of the deployable structure 4. Figure 2(a) shows the deployment of the deployable structure 4, and Figure 2(b) shows the deployed state of the deployable structure 4. After the spacecraft 11 arrives at its destination, and once the regolith scattered around the spacecraft 11 has sufficiently fallen, the space-use retractable dustproof case 20 is opened and the deployable structure 4 is deployed, thereby preventing regolith from adhering to the deployable structure 4. In other words, by housing the deployable structure 4 in the space-use retractable dustproof case 20, the deployable structure 4 is not directly exposed to the regolith environment. Therefore, there is no need to take measures to prevent regolith adhesion or intrusion to the movable parts and solar cells of the deployable structure 4. Accordingly, by housing the deployable structure 4 in the space-use retractable dustproof case 20, the structure of the deployable structure 4 can be simplified. The deployable structure 4 may be a solar cell deployment mechanism having solar cells, or a solar cell paddle. Furthermore, the deployable structure 4 is fixed to the storage section 1 by the holding and releasing mechanism 5 provided by the deployable structure 4 from the time of rocket launch until the spacecraft 11, which is equipped with the space-use openable dustproof case 20, lands on the lunar surface. After the spacecraft 11 equipped with the space open / closed dust-proof case 20 reaches the desired location, the deployment structure 4 is released by the holding release mechanism 5.

[0012] After the deployment structure 4 is released, the deployment structure 4 may be deployed and stored, for example, electrically or manually. As a specific example, as shown in FIG. 3, by mounting a motor 6 on the hinge 3, the space open / closed dust-proof case 20 can be opened and closed electrically. The motor 6 is an electric motor. That is, the hinge 3 can open and close the cover part 2 by utilizing the driving force of the electric motor.

[0013] As shown in FIG. 4, by mounting a holding release mechanism 7 on the space open / closed dust-proof case 20, the space open / closed dust-proof case 20 may be able to maintain the closed state even when vibrations and impacts occur in the launch environment and the transportation environment. The launch environment is the environment at the time of launch of the rocket carrying the space open / closed dust-proof case 20. The transportation environment is the environment when transporting the space open / closed dust-proof case 20 in space. Also, when necessary, by the operation of the holding release mechanism 7, the space open / closed dust-proof case 20 is opened. The holding release mechanism 7 is also called the first holding release mechanism. The first holding release mechanism is a holding release mechanism having a first holding mechanism and a first release mechanism. The first holding mechanism holds the storage part 1 and the cover part 2 so that no gap occurs between the storage part 1 and the cover part 2 when the space open / closed dust-proof case 20 is in the closed state. The first release mechanism releases the first holding mechanism in order to change the space open / closed dust-proof case 20 from the closed state to the open state. Also, the first release mechanism may release the first holding mechanism after the space open / closed dust-proof case 20 is changed from the open state to the closed state. That is, the first release mechanism releases the first holding mechanism once or a plurality of times. As a specific example of the configuration of the holding release mechanism 7, there is a configuration in which the storage part 1 and the cover part 2 are fastened using bolts and the bolts are cut by gunpowder or the like as necessary.

[0014] As shown in Figure 5, the space-use openable dustproof case 20 may be equipped with two types of holding and releasing mechanisms: a holding and releasing mechanism 8 and a holding and releasing mechanism 9. The holding and releasing mechanism 8 is a holding and releasing mechanism that is used only once or multiple times. The holding and releasing mechanism 9 is a holding and releasing mechanism that can be used multiple times. The holding and releasing mechanism 8 is also called the first holding and releasing mechanism. The holding and releasing mechanism 9 is also called the second holding and releasing mechanism. The second holding mechanism holds the storage section 1 and the cover section 2 so that no gap is created between the storage section 1 and the cover section 2 when the space-use openable dustproof case 20 is in the closed state. The second releasing mechanism releases the second holding mechanism to open the space-use openable dustproof case 20 from the closed state. The second releasing mechanism can release the second holding mechanism multiple times. The second holding mechanism can re-hold the storage section 1 and the cover section 2 after the second holding mechanism has been released by the second release mechanism, so as not to create a gap between them. In this case, the holding force of the second holding mechanism may be less than the holding force of the first holding mechanism. The holding and releasing mechanism 8 is used to ensure that the space-use openable dustproof case 20 can withstand the launch environment and the lunar landing environment. The lunar landing environment is the environment when the rocket carrying the space-use openable dustproof case 20 lands on the lunar surface. The configuration of the holding and releasing mechanism 8 is the same as that of the holding and releasing mechanism 7, as an example. With this configuration, the holding and releasing mechanism 8 is lightweight and can achieve a large holding force. The holding and releasing mechanism 9 is inherently complex because it requires components such as links, cams, and electric motors. On the other hand, the transport environment on the lunar surface is milder than the launch and lunar landing environments, so the holding force of the holding and releasing mechanism 9 does not need to be large. Therefore, by having two types of holding and releasing mechanisms in the space-use openable dustproof case 20, the entire mechanism of the holding and releasing mechanism 9 can be miniaturized.

[0015] As shown in Figure 6, the cover portion 2 may have fixing fittings 10 on the inside of the space-use openable dustproof case 20. The fixing fittings 10 secure the deployable structure 4 so as not to vibrate when the storage portion 1 and the cover portion 2 are held by the holding and releasing mechanism. Figure 6 shows a cross-sectional view corresponding to section AA of Figure 5. Figure 6(a) shows a cross-sectional view in the half-open state, and Figure 6(b) shows a cross-sectional view in the closed state. The half-open state is when the cover portion 2 is half-open. The cover portion 2 is equipped with a fixing bracket 10, which allows the deployed structure 4 in its stored state to be relatively securely fixed inside the space-use openable dustproof case 20, as shown in Figure 6(b). Furthermore, the deployed structure 4 can be protected from vibrations during transport of the space-use openable dustproof case 20. A vibration environment is one that may occur when the spacecraft 11 travels over the uneven surface 13 of the lunar surface. The fixing bracket 10 can be used multiple times. Therefore, by equipping the space-use openable dustproof case 20 with a holding and releasing mechanism 9 and a fixing bracket 10, the number of parts in the mechanism for re-holding the deployed structure 4 after the space-use openable dustproof case 20 has been closed can be reduced. Furthermore, the fixing bracket 10 may have spring properties or the like so that a preload is applied to the deployable structure 4 when the space-use openable dustproof case 20 is locked using the holding and releasing mechanism 9.

[0016] Figure 7 illustrates an embodiment of the space-use retractable dustproof case 20. Figure 7(a) shows the dustproof case in its stored state, Figure 7(b) shows the dustproof case in its deployed state, Figure 7(c) shows the open state, and Figure 7(d) shows the deployable structure in its deployed state. The stored state of the dustproof case is when the space-use retractable dustproof case 20 is stored in the spacecraft 11. The deployed state of the dustproof case is when the space-use retractable dustproof case 20 is deployed in the spacecraft 11. The deployed structure state is when the deployable structure 4 is deployed. The space-use retractable dustproof case 20 may be attached to the spacecraft 11 by a movable hinge 12. As shown in Figure 7, a movable hinge 12 is provided at the connection point between the spacecraft 11 that transports the space-use openable dustproof case 20 and the space-use openable dustproof case 20. This allows the relative posture between the spacecraft 11 and the space-use openable dustproof case 20 to be changed during transport and during deployment after the transport of the space-use openable dustproof case 20 is complete. The movable hinge 12 is, in specific examples, an electric motor. Deployment occurs when the deployment structure 4 is deployed.

[0017] As shown in Figure 8, even if the spacecraft 11 stops on uneven ground 13 after completing the transport of the space-use retractable dustproof case 20, the attitude of the deployable structure 4 can be arbitrarily changed by changing the attitude of the space-use retractable dustproof case 20, for example, by changing the angle of the movable hinge 12 to make the axial direction of the deployable structure 4 perpendicular to the direction of gravity. The movable hinge 12 may also be a multi-axis hinge.

[0018] ***Explanation of the effects of Embodiment 1*** Conventionally, dustproof measures have been necessary for deployable structures operating in environments with gravity and regolith, such as the lunar surface. However, by housing the deployable structure 4 inside the space-use openable dustproof case 20 according to this embodiment, the space in which the deployable structure 4 is housed is sealed. Furthermore, the deployable structure 4 is deployed by opening the cover 2 after the regolith stirred up by the movement of the spacecraft 11 carrying the deployable structure 4 has sufficiently settled. Therefore, according to this embodiment, since the deployable structure 4 is dustproofed by the space-use openable dustproof case 20, dustproof measures for the movable parts of the deployable structure 4 are unnecessary.

[0019] ***Other Embodiments*** Although Embodiment 1 has been described, multiple parts of this embodiment may be combined and implemented. Alternatively, this embodiment may be implemented partially. Furthermore, this embodiment may be modified in various ways as needed, and may be implemented as a whole or in parts in any combination. The embodiments described above are essentially preferred examples and are not intended to limit the disclosure, its applications, or the scope of use. The procedures described may be modified as appropriate.

[0020] The various aspects of this disclosure are summarized below as an appendix.

[0021] (Note 1) A space-use openable dustproof case that opens and closes in outer space, A storage compartment in which a deployable structure, which is a structure deployed in outer space, is housed, A cover portion that seals the inside of the space-use openable dustproof case by covering the opening of the storage portion, The storage section and the cover section are connected by a hinge that allows the cover section to be opened and closed. A space-use, openable, dustproof case equipped with a dust-proof design.

[0022] (Note 2) The aforementioned hinge is a space-use openable dustproof case as described in Appendix 1, which opens and closes the cover using the driving force of an electric motor.

[0023] (Note 3) The closed state is defined as the state in which the inside of the space-use openable dustproof case is sealed by the cover portion. The open state is defined as the state in which the space-use open / close dustproof case is not in the closed state. The aforementioned space-use, retractable dustproof case further, A first holding and releasing mechanism comprising: a first holding mechanism that holds the storage section and the cover section so that no gap is created between the storage section and the cover section when the space-use openable dustproof case is in the closed state; and a first releasing mechanism that releases the first holding mechanism only once to open the space-use openable dustproof case from the closed state. A space-use, openable, dustproof case as described in Appendix 1 or 2, comprising the features described herein.

[0024] (Note 4) The aforementioned space-use, retractable dustproof case further, A second holding and releasing mechanism comprising: a second holding mechanism that holds the storage section and the cover section so that no gap is created between the storage section and the cover section when the space-use openable dustproof case is in the closed state; and a second releasing mechanism that releases the second holding mechanism to open the space-use openable dustproof case from the closed state. Equipped with, The second release mechanism can release the second holding mechanism multiple times. The second holding mechanism is capable of holding the storage section and the cover section again after the second holding mechanism has been released by the second release mechanism, so as to prevent any gap from forming between the storage section and the cover section. This is the openable and closable dustproof case for space use as described in Appendix 3.

[0025] (Note 5) The closed state is defined as the state in which the inside of the space-use openable dustproof case is sealed by the cover portion. The open state is defined as the state in which the space-use open / close dustproof case is not in the closed state. The aforementioned space-use, retractable dustproof case further, A first holding release mechanism comprising: a first holding mechanism that holds the storage section and the cover section so that no gap is created between the storage section and the cover section when the space-use openable dustproof case is in the closed state; and a first release mechanism that releases the first holding mechanism to open the space-use openable dustproof case from the closed state, A second holding release mechanism comprising: a second holding mechanism that holds the storage section and the cover section so that no gap is created between the storage section and the cover section when the space-use openable dustproof case is in the closed state; and a second release mechanism that releases the second holding mechanism to open the space-use openable dustproof case from the closed state. Equipped with, The space-use openable dustproof case according to Appendix 1 or 2, wherein the second retaining mechanism, after the second retaining mechanism has been released by the second release mechanism, can re-retain the storage section and the cover section with a retaining force smaller than that of the first retaining mechanism, so as to prevent any gap from forming between the storage section and the cover section.

[0026] (Note 6) The cover portion has a fixing bracket on the inside of the space-use openable dustproof case of the cover portion. The aforementioned fixing bracket secures the deployable structure so as not to vibrate when the storage section and the cover section are held by the holding and release mechanism, as described in any one of the appendices 3 to 5 for a space-use openable dustproof case.

[0027] (Note 7) The aforementioned space-use openable dustproof case is attached to the spacecraft by a movable hinge. The movable hinge allows the orientation of the deployable structure to be changed after the deployable structure has been deployed, as described in any one of Appendix 1 to 6 for a space-use openable dustproof case.

[0028] (Note 8) A dustproofing method for protecting a deployable structure, which is a structure that opens and closes in outer space, from dust using a space-use openable dustproof case that opens and closes in outer space, The aforementioned space-use, openable dustproof case is A storage section in which the aforementioned deployable structure is housed, A cover portion that seals the inside of the space-use openable dustproof case by covering the opening of the storage portion, The storage section and the cover section are connected by a hinge that allows the cover section to be opened and closed. A dustproofing method comprising the following: after the cover portion is opened, a deployable structure having a solar cell stored in the storage portion deploys. [Explanation of Symbols]

[0029] 1 Storage compartment, 2 Cover, 3 Hinge, 4 Deployment structure, 5 Holding / releasing mechanism, 6 Motor, 7, 8, 9 Holding / releasing mechanisms, 10 Fixing bracket, 11 Spacecraft, 12 Movable hinge, 13 Rough terrain, 20 Space-use openable dustproof case.

Claims

1. A space-use openable dustproof case that opens and closes in outer space, A storage compartment in which a deployable structure, which is a structure that opens and closes in outer space, is housed, A cover portion that seals the inside of the space-use openable dustproof case by covering the opening of the storage portion, The storage section and the cover section are connected by a hinge that allows the cover section to be opened and closed. A space-use openable dustproof case equipped with, The closed state is defined as the state in which the inside of the space-use openable dustproof case is sealed by the cover portion. The open state is defined as the state in which the space-use open / close dustproof case is not in the closed state. The aforementioned space-use, retractable dustproof case further, A first holding release mechanism comprising: a first holding mechanism that holds the storage section and the cover section so that no gap is created between the storage section and the cover section when the space-use openable dustproof case is in the closed state; and a first release mechanism that releases the first holding mechanism only once to open the space-use openable dustproof case from the closed state, A second holding release mechanism comprising: a second holding mechanism that holds the storage section and the cover section so that no gap is created between the storage section and the cover section when the space-use openable dustproof case is in the closed state; and a second release mechanism that releases the second holding mechanism to open the space-use openable dustproof case from the closed state. Equipped with, The second release mechanism can release the second holding mechanism multiple times. The second holding mechanism is a space-use openable dustproof case that can re-hold the storage section and the cover section so that no gap is created between them after the second holding mechanism has been released by the second release mechanism.

2. A space-use openable dustproof case that opens and closes in outer space, A storage compartment in which a deployable structure, which is a structure that opens and closes in outer space, is housed, A cover portion that seals the inside of the space-use openable dustproof case by covering the opening of the storage portion, The storage section and the cover section are connected by a hinge that allows the cover section to be opened and closed. A space-use openable dustproof case equipped with, The closed state is defined as the state in which the inside of the space-use openable dustproof case is sealed by the cover portion. The open state is defined as the state in which the space-use open / close dustproof case is not in the closed state. The aforementioned space-use, retractable dustproof case further, A first holding release mechanism comprising: a first holding mechanism that holds the storage section and the cover section so that no gap is created between the storage section and the cover section when the space-use openable dustproof case is in the closed state; and a first release mechanism that releases the first holding mechanism to open the space-use openable dustproof case from the closed state, A second holding release mechanism comprising: a second holding mechanism that holds the storage section and the cover section so that no gap is created between the storage section and the cover section when the space-use openable dustproof case is in the closed state; and a second release mechanism that releases the second holding mechanism to open the space-use openable dustproof case from the closed state. Equipped with, The second retaining mechanism is a space-use openable dustproof case that, after the second retaining mechanism has been released by the second release mechanism, can re-retain the storage section and the cover section with a retaining force smaller than that of the first retaining mechanism, so as to prevent any gap from forming between the storage section and the cover section.

3. A space-use openable dustproof case that opens and closes in outer space, A storage compartment in which a deployable structure, which is a structure that opens and closes in outer space, is housed, A cover portion that seals the inside of the space-use openable dustproof case by covering the opening of the storage portion, The storage section and the cover section are connected by a hinge that allows the cover section to be opened and closed. A space-use openable dustproof case equipped with, The closed state is defined as the state in which the inside of the space-use openable dustproof case is sealed by the cover portion. The open state is defined as the state in which the space-use open / close dustproof case is not in the closed state. The aforementioned space-use, retractable dustproof case further, A first holding and releasing mechanism comprising: a first holding mechanism that holds the storage section and the cover section so that no gap is created between the storage section and the cover section when the space-use openable dustproof case is in the closed state; and a first releasing mechanism that releases the first holding mechanism only once to open the space-use openable dustproof case from the closed state. Equipped with, The cover portion has a fixing bracket on the inside of the space-use openable dustproof case of the cover portion. The aforementioned fixing bracket is a space-use openable dustproof case that secures the deployable structure so as not to vibrate when the storage section and the cover section are held in place by the holding and release mechanism.

4. A space-use openable dustproof case that opens and closes in outer space, A storage compartment in which a deployable structure, which is a structure that opens and closes in outer space, is housed, A cover portion that seals the inside of the space-use openable dustproof case by covering the opening of the storage portion, The storage section and the cover section are connected by a hinge that allows the cover section to be opened and closed. A space-use openable dustproof case equipped with, The aforementioned space-use openable dustproof case is attached to the spacecraft by a movable hinge. The movable hinge is a space-use, openable, dustproof case that can change the orientation of the deployable structure after it has been deployed.

5. The closed state is defined as the state in which the inside of the space-use openable dustproof case is sealed by the cover portion. The open state is defined as the state in which the space-use open / close dustproof case is not in the closed state. The aforementioned space-use, retractable dustproof case further, A first holding and releasing mechanism comprising: a first holding mechanism that holds the storage section and the cover section so that no gap is created between the storage section and the cover section when the space-use openable dustproof case is in the closed state; and a first releasing mechanism that releases the first holding mechanism only once to open the space-use openable dustproof case from the closed state. A space-use openable dustproof case according to claim 4, comprising:

6. The cover portion has a fixing bracket on the inside of the space-use openable dustproof case of the cover portion. The aforementioned fixing bracket secures the deployable structure so as not to vibrate when the storage section and the cover section are held by the holding and releasing mechanism, as described in claim 1 or 2.

7. The aforementioned space-use openable dustproof case is attached to the spacecraft by a movable hinge. The movable hinge is capable of changing the orientation of the deployable structure after the deployable structure has been deployed. Space-use openable dustproof case according to any one of claims 1 to 3.

8. The hinge opens and closes the cover portion using the driving force of an electric motor, as described in any one of claims 1 to 5.

9. The hinge opens and closes the cover portion using the driving force of an electric motor, as described in claim 6.

10. The hinge is a space-use openable dustproof case according to claim 7, which opens and closes the cover using the driving force of an electric motor.

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