A protective device for spaceborne optical devices

Abstract

The present application discloses a protective device for satellite-borne optical devices, the device comprising: a main body and a protective film; wherein the main body comprises a first bracket and a second bracket, the first bracket is connected to a mounting base and the second bracket, and is used to support the second bracket; the second bracket is a U-shaped structure, and is parallel to the sunshade. The protective film is movably connected to the second bracket and covers the U-shaped structure, and never separates from the second bracket during movement, so that the sunshade can always protect the sunshade when driven by a rotating mechanism. The present application solves the technical problem in the prior art that satellite-borne optical devices cannot be protected during satellite launch.

Description

Technical Field

[0001] The present application relates to the technical field of satellite overall design, and in particular to a protective device for satellite-borne optical components. Background Art

[0002] At present, the protection of excess objects in optical devices with rotating mechanisms at home and abroad is usually achieved by means of protective covers, soft shielding cloths, etc. This method is only suitable for the protection of excess objects in the rotating mechanism of the optical device when it is in the standby lock state; when the mechanism rotates, the protective cover, soft shielding cloth and other excess object protection measures need to be removed, and the excess object protection cannot be installed during the rotation of the mechanism. After the mechanism returns to the standby lock position, the protective cover, soft shielding cloth and other excess object protection measures are installed again. The protective cover, soft shielding cloth and other excess object protection measures have been disassembled and installed many times; the protective cover, soft shielding cloth and other excess object protection need to be removed before the satellite is launched. The optical device with a rotating mechanism is in a state of no excess object protection during the satellite launch and in orbit. During the satellite launch process, due to vibration and other reasons, some excess objects will appear in the rocket fairing. If they enter the optical rotating mechanism, they will cause problems such as blurred imaging of the equipment and decreased optical isolation. Summary of the invention

[0003] The technical problem solved by the present application is that the existing technology cannot protect the onboard optical devices during the satellite launch process. The present application provides a protective device for onboard optical devices. In the solution provided in the embodiment of the present application, the protective device is provided with a protective film on a second bracket parallel to the sunshade, and the protective film is movable on the second bracket; the protective film does not separate from the second bracket during the movement of the second bracket, so that the sunshade can be protected during the entire launch process without affecting the rotation of the rotating mechanism, thereby preventing unnecessary objects from entering the onboard optical device during the launch process and affecting its performance.

[0004] In a first aspect, an embodiment of the present application provides a protective device for a satellite-borne optical device, wherein the satellite-borne optical device comprises a light shield, a rotating mechanism for driving the light shield to rotate, and a mounting base for carrying the rotating mechanism, and the device comprises: a body and a protective film; wherein:

[0005] The body comprises a first bracket and a second bracket, wherein the first bracket is connected to the mounting base and the second bracket and is used to support the second bracket; the second bracket is a U-shaped structure and is parallel to the light shield;

[0006] The protective film is movably connected to the second bracket and covers the U-shaped structure, and never separates from the second bracket during movement, so that the light shield can always protect the light shield when driven by the rotating mechanism.

[0007] Optionally, when the rotating mechanism is in standby locking state, the sum of the angle between the first bracket and the second bracket and the angle between the light shield and the mounting base is 180 degrees.

[0008] Optionally, the U-shaped structure in the second bracket is a double-layer structure, one end of the protective film is fixed to one side of the U-shaped structure, and the other end is clamped between the double-layer structures of the U-shaped structure to form a movable end.

[0009] Optionally, the edge of the movable end is designed to be arc-shaped.

[0010] Optionally, the first bracket and the second bracket are made of aluminum alloy material.

[0011] Optionally, the size of the second bracket is such that it can cover the maximum envelope of the movement of the sunshade, and the size of the protective film is not less than the size of the second bracket.

[0012] Optionally, the size of the edge of the protective film corresponding to the second bracket is larger than the size of the second bracket.

[0013] Optionally, the movable amplitude of the protective film is not less than the absolute value of the difference between the movement of the light shield from the minimum envelope position to the maximum envelope position.

[0014] Optionally, there is a gap between the protective film and the light shield, and the size of the gap is not less than the maximum amplitude of the movement of the light shield under the action of force during the launch process.

[0015] Optionally, the protective film is a polyimide film. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a satellite-borne optical device provided in an embodiment of the present application;

[0017] Figure 2 A schematic structural diagram of a protective device for a satellite-borne optical device provided in an embodiment of the present application;

[0018] Figure 3 A schematic structural diagram of another protective device for a space-borne optical device provided in an embodiment of the present application;

[0019] Figure 4A A schematic diagram of the structure of a protective film provided in an embodiment of the present application;

[0020] Figure 4B A schematic diagram showing the relationship between the protective film and the second bracket provided in the embodiment of the present application is shown;

[0021] Figure 5AA schematic diagram of a rotation mechanism provided in an embodiment of the present application driving a light shield to move;

[0022] Figure 5B A schematic diagram of another rotating mechanism provided in an embodiment of the present application driving the light shield to move;

[0023] Figure 6 A schematic structural diagram of another protective device for a satellite-borne optical device provided in an embodiment of the present application.

[0024] Description of the accompanying drawings: 1-main body; 2-protective film; 11-first bracket; 12-second bracket; 100-light shield; 101-rotating mechanism; 102-mounting base. DETAILED DESCRIPTION

[0025] In the solutions provided in the embodiments of this application, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] In order to better understand the above technical scheme, the technical scheme of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical scheme of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0027] See also Figure 1 A schematic diagram of the structure of a satellite-borne optical device provided in an embodiment of the present application. Figure 1 In the embodiment, the satellite-borne optical device includes a sunshade 100, a rotating mechanism 101 for driving the sunshade 100 to rotate, and a mounting base 102 for carrying the rotating mechanism 101; wherein the sunshade 100 can move under the drive of the rotating mechanism 101 and form a motion envelope; for example, when the rotating mechanism 101 is in standby lock, the sunshade 100 is at the lowest position of the envelope, and the sunshade 100 can move from the lowest position to the highest position under the drive of the rotating mechanism 101. The rotating mechanism 101 is mounted on the mounting base 102, and the mounting base 102 is used to support the rotating mechanism 101. In addition, there is a certain angle between the sunshade 100 and the mounting base 102, and the size of the angle can be set according to actual conditions and is not limited here.

[0028] During the satellite launch process, there may be some extra objects. Figure 1When the onboard optical device is inside the spacecraft, it will affect the performance of the onboard optical device. In order to protect the onboard optical device during the satellite launch process, the protective device will not affect the operation of the onboard optical device during the occurrence process; on the other hand, it can also provide protection for the onboard optical device. For this purpose, see Figure 2 A schematic diagram of a protective device for a spaceborne optical device provided in an embodiment of the present application, which is applied to Figure 1 The onboard optical device shown is Figure 1 The onboard optics shown provide protection.

[0029] As an example, in Figure 2 In the figure, the protective device includes a main body 1 and a protective film 2; wherein the main body 1 includes a first bracket 11 and a second bracket 12, the first bracket 11 is connected to the mounting base 102 and the second bracket 12, and is used to support the second bracket 12; the second bracket 12 is a U-shaped structure and is parallel to the sunshade 100; the protective film 2 is movably connected to the second bracket 12 and covers the U-shaped structure, and never separates from the second bracket 12 during movement, so that the sunshade 100 can always protect the sunshade 100 under the drive of the rotating mechanism 101.

[0030] Continue to see Figure 2 In order to enable the first bracket 11 to support the second bracket 12, the lower bottom surface of the first bracket 11 is connected to the mounting base 102, and the first bracket 11 is perpendicular to the mounting base 102, and the lower bottom surface of the second bracket 12 is connected to the upper bottom surface of the first bracket 11; for example, the first bracket 11 and the second bracket 12 are fixed by screws + nuts, and the specifications of the fixing parts are set according to the actual situation. The first bracket 11 and the mounting base 102 can also be fixed in this way, which is not described here. In addition, the second bracket 12 can be a U-shaped structure, that is, three sides are closed and one side is open, and the middle position is a hollow area; further, in order to achieve protection of the sunshade 100, it is necessary to set the second bracket 12 in front of the sunshade 100 (such as the side away from the rotating mechanism 101), and it is parallel to the sunshade 100.

[0031] Since there is a certain angle between the sunshade 100 and the mounting base 102, in order to make the second bracket 12 parallel to the sunshade 100, there is a certain angle between the second bracket 12 and the first bracket. For example, if the starting position of the sunshade 100 is the position when the rotating mechanism 101 is in standby lock, and the first bracket 11 is perpendicular to the mounting base 102, then the angle between the first bracket 11 and the second bracket 12 and the sum of the angles between the sunshade and the mounting base are 180 degrees. That is to say, in the solution provided in the embodiment of the present application, the first bracket 11 and the second bracket 12 are bent, and the first bracket 11 and the second bracket 12 can be integrated and bent by corresponding technology; or the first bracket 11 and the second bracket 12 are two separate structures, and a certain angle is set when they are connected.

[0032] Furthermore, in order to reduce the structure of the protective device, in the solution provided in the embodiment of the present application, the first bracket 11 and the second bracket 12 are made of aluminum alloy material.

[0033] Continue back Figure 2 In the solution provided in the embodiment of the present application, in order to achieve the protection of the satellite-borne optical device, it is also necessary to set a protective film 2 on the second bracket 12, and the protective film 2 is used to protect the sunshade 100. When the rotating mechanism 101 is locked in standby mode, the center of the protective film 2 corresponds to the center of the sunshade 100. For example, the center of the protective film 2 and the center of the sunshade 100 are on a connecting line or on a parallel connecting line. In addition, when the sunshade 100 moves driven by the rotating mechanism 101, the position of the sunshade 100 changes, so that the distance between the sunshade 100 and the protective film 2 also changes. In order to reduce the obstruction of the protective film 2 to the movement of the sunshade 100, in the solution provided in the embodiment of the present application, the protective film 2 is movably connected to the second bracket 12. For example, when the sunshade 100 contacts the protective film 2 during the movement, since the protective film 2 is movable, the protective film 2 can be pushed open to reduce the obstruction of the protective film 2 to the movement of the sunshade 100.

[0034] Figure 3 The schematic diagram of the structure of another protective device for a spaceborne optical device provided in an embodiment of the present application is shown. Figure 3 In the embodiment, the U-shaped structure in the second bracket 12 is a double-layer structure, one end of the protective film 2 is fixed to one side of the U-shaped structure, and the other end is clamped between the double-layer structures of the U-shaped structure to form a movable end. When the sunshade 100 contacts the protective film 2 during movement, the protective film 2 can be pushed open, and the movable end of the protective film 2 moves relatively to form a certain arc (the movable end is still clamped between the double-layer structures of the U-shaped structure) so that the sunshade 100 can move normally. For example, one end of the protective film 2 is fixed to one side of the U-shaped structure in the same manner as that between the first bracket 11 and the second bracket 12, which will not be described in detail here.

[0035] Figure 4A The schematic diagram of the structure of a protective film provided by an embodiment of the present application is shown. In FIG4 , in order to avoid additional resistance generated during the relative movement of the movable end of the protective film 2, the edge of the movable end is designed to be curved. The angle of the curved design can be set according to actual conditions and is not limited here. Figure 4B A schematic diagram showing the relationship between the protective film and the second bracket provided in an embodiment of the present application is shown.

[0036] As the sunshade 100 moves driven by the rotating mechanism 101, the position of the sunshade 100 changes, so that the distance between the sunshade 100 and the protective film 2 also changes. That is, an envelope is formed based on the movement trajectory of the sunshade 100 driven by the rotating mechanism 101. The envelope is an arc line, and during the rotation of the sunshade 100, the same point is sometimes closer to the position of the protective device (maximum movement position), and sometimes farther away from the position of the protective device (minimum movement position). The maximum movement position of the protective film 2 is consistent with the maximum movement position of the lowest point of the sunshade 100; when determining the maximum movement position of the lowest point of the sunshade 100, a circle is drawn with the rotation center of the rotating mechanism 101 as the center and the radius from the center to the lowest point of the sunshade 100. The intersection of the circle and the center line of the sunshade 100 is the maximum movement position of the protective film 2. Figure 5A The figure shows that when the rotating mechanism 101 is in standby locking, the lens hood 100 is at the lowest point, and shows the lowest point movement envelope and the maximum position of the lowest point movement. Figure 5B The figure shows that the sunshade 100 moves to a horizontal position driven by the rotating mechanism 101 , and the sunshade 100 is at the maximum position.

[0037] Furthermore, in order to protect the sunshade 100 during the movement of the sunshade 100, the size of the second bracket 12 is such that it can cover the maximum envelope of the movement of the sunshade 100. For example, the width and height of the second bracket 12 are not less than the maximum envelope of the sunshade 100, wherein the maximum envelope refers to the envelope corresponding to the movement to the maximum position. As another example, the movable amplitude of the protective film 2 is not less than the absolute value of the difference between the movement of the sunshade from the minimum envelope position to the maximum envelope position.

[0038] Figure 6 A schematic diagram of the structure of another protective device for spaceborne optical devices is shown. Figure 6In order to prevent the protective film 2 from falling out of the second bracket 12 during the rotation of the rotating mechanism 101, so that it vibrates and hits the light shield 100, the protective film 2 is generally designed to exceed the maximum envelope of the diameter of the light shield 100 to be protected, so that it can better achieve protection and cannot fall out of the second bracket 12 during the rotation of the rotating mechanism 101, that is, the size of the protective film 2 is not less than the size of the second bracket 12. As another example, the size of the side of the protective film 2 corresponding to the second bracket 12 is larger than the size of the second bracket 12, such as Figure 6 As shown in part A.

[0039] In order to avoid affecting the performance of satellite-borne optical devices, the protective device has no contact with the sunshade 100 during the launch process. In order to ensure that the protective device has no contact with the sunshade 100 during the launch process, there is a gap between the protective film 2 and the sunshade 100, and the size of the gap is not less than the maximum amplitude of the movement of the sunshade 100 under the action of force during the launch process.

[0040] As another example, the protective film 2 is a polyimide film.

[0041] As another example, in the solution provided in the embodiment of the present application, the protective device can also protect the sunshade through an integrated bracket to prevent excess objects from entering the satellite-borne optical device during the launch process and affecting its performance.

[0042] In the solution provided in the embodiment of the present application, the protective device is configured by providing a protective film 2 on a second bracket 12 parallel to the sun shading, and the protective film 2 is movable on the second bracket 12; the protective film 2 does not separate from the second bracket 12 during its movement, so that the sun shading can be protected throughout the entire launch process without affecting the rotation of the rotating mechanism, thereby preventing unnecessary objects from entering the satellite-borne optical devices during the launch process and affecting their performance.

[0043] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A protective device for a satellite-borne optical device, the satellite-borne optical device comprising a light shield, a rotating mechanism for driving the light shield to rotate, and a mounting base for carrying the rotating mechanism, characterized in that: include: A body (1) and a protective film (2); wherein, The body (1) comprises a first bracket (11) and a second bracket (12); the first bracket (11) is connected to the mounting base and the second bracket (12) and is used to support the second bracket (12); the second bracket (12) is a U-shaped structure and is parallel to the light shield; The protective film (2) is movably connected to the second bracket (12) and covers the U-shaped structure, and never separates from the second bracket (12) during movement, so that the light shield can always protect the light shield when driven by the rotating mechanism; When the rotating mechanism is in standby locking state, the sum of the angle between the first bracket (11) and the second bracket (12) and the angle between the light shield and the mounting base is 180 degrees; The U-shaped structure in the second bracket (12) is a double-layer structure, one end of the protective film (2) is fixed to one side of the U-shaped structure, and the other end is clamped between the double-layer structures of the U-shaped structure to form a movable end.

2. The device according to claim 1, characterized in that The edge of the movable end is designed to be arc-shaped.

3. The device according to any one of claims 1 to 2, characterized in that: The first bracket (11) and the second bracket (12) are made of aluminum alloy material.

4. The device according to any one of claims 1 to 2, characterized in that: The size of the second bracket (12) is such that it can cover the maximum envelope of the movement of the sunshade, and the size of the protective film (2) is not less than the size of the second bracket (12).

5. The device according to claim 4, characterized in that The size of the side of the protective film (2) corresponding to the second bracket (12) is greater than the size of the second bracket (12).

6. The device according to any one of claims 1 to 2, characterized in that: The movable amplitude of the protective film (2) is not less than the absolute value of the difference between the movement of the light shield from the minimum envelope position to the maximum envelope position.

7. The device according to any one of claims 1 to 2, characterized in that: There is a gap between the protective film (2) and the light shield, and the size of the gap is not less than the maximum amplitude of the movement of the light shield under the action of force during the launch process.

8. The device according to claim 6, characterized in that The protective film (2) is a polyimide film.

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