A lens protection cover mechanism for space optical cameras

Abstract

This invention discloses a protective light-shielding cover mechanism for a space optical camera lens, belonging to the field of space optics technology. The protective light-shielding cover mechanism includes: an opening and closing mechanism base; a protective light-shielding cover connected to the base via an opening and closing drive mechanism; a conductive slip ring fixed to the bottom of the base; a geared arc-shaped guide rail mechanism and multiple V-shaped bearing mechanisms evenly arranged at the bottom of the geared arc-shaped guide rail mechanism fixed to the bottom of the guide rail mechanism; the V-shaped bearing mechanisms fixed to the top of the light-shielding cover; and a rotation drive mechanism fixedly connected to the top side of the light-shielding cover. The rotation drive mechanism is drively connected to the geared arc-shaped guide rail mechanism and drives the guide rail mechanism to rotate within the V-shaped bearing mechanisms. The protective light-shielding cover for a space optical camera lens provided by this application has independently operable opening, closing, and rotation mechanisms, which can more efficiently adjust the attitude of the protective light-shielding cover and reduce the need for overall attitude adjustment and control.

Description

Technical Field

[0001] This invention relates to the field of space optics technology, and in particular to a lens protection and light-shielding cover mechanism for a space optical camera. Background Technology

[0002] The protective light shield of a space optical camera lens blocks sunlight and reduces stray light from the Earth and atmosphere during on-orbit observation and imaging, thus improving the image quality of the optical camera. When not performing observation and imaging, it provides thermal and physical protection for the light entrance. Generally, the protective light shield of a space optical camera only has an opening and closing mechanism to drive the shield to a certain angle to block sunlight. Adjusting the observation area requires overall attitude control to adjust the position of the protective light shield relative to the sun to achieve the purpose of blocking sunlight. Therefore, the ability of the protective light shield to rotate around the optical axis would greatly reduce the requirements for overall attitude control. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned technical problems by providing a space optical camera lens protective light shielding cover mechanism that can rotate around the optical axis.

[0004] To achieve the above objectives, the present invention provides a protective light-shielding cover mechanism for a space optical camera lens, the specific technical solution of which is as follows:

[0005] A protective light-shielding cover mechanism for a space optical camera lens, the protective light-shielding cover mechanism comprising:

[0006] A base for an opening and closing mechanism, wherein a circular hole is formed in the middle of the base;

[0007] A protective light-shielding cover, wherein the protective light-shielding cover is connected to the top rear side of the base of the opening and closing mechanism via an opening and closing drive mechanism;

[0008] A conductive slip ring, the top of which is fixedly connected to the bottom of the opening and closing mechanism base, a toothed arc-shaped guide rail mechanism is fixedly connected to the bottom of the conductive slip ring, and multiple evenly arranged V-shaped bearing mechanisms are slidably connected to the bottom of the toothed arc-shaped guide rail mechanism, all of which are fixed to the top of the light shield.

[0009] A rotation drive mechanism is fixedly connected to the top side of the sunshade. The rotation drive mechanism is connected to the gear ring arc guide rail mechanism and is used to drive the gear ring arc guide rail mechanism to rotate inside the V-shaped bearing mechanism.

[0010] Furthermore, the opening and closing drive mechanism includes: a first motor, a reducer fixedly connected to the output end of the first motor, a first rotating shaft fixedly connected to the output end of the reducer, the bottom of the first motor and the first rotating shaft being mounted on the base of the opening and closing mechanism via a support seat, and the first rotating shaft being fixedly connected to the bottom of the protective light-shielding cover via a connecting block.

[0011] Furthermore, the gear ring arc guide mechanism includes: an annular gear ring, a rack fixedly connected to the outer side of the annular gear ring along its circumference, and a pair of protruding structures fixedly connected to both sides of the bottom of the annular gear ring.

[0012] Furthermore, each of the V-shaped bearing mechanisms includes: a base, the bottom of which is fixedly connected to the top of the light shield, a support plate fixedly connected to the top of the base, two pairs of V-shaped rollers rotatably connected to the support plate, each V-shaped roller having a groove in the middle, the bottom of the annular toothed ring being arranged between the two pairs of V-shaped rollers, and the protrusion structure cooperating with the groove.

[0013] Furthermore, the rotation drive mechanism includes: a second motor, which is fixed to the top side of the sunshade via a mounting bracket; a second reducer is fixedly connected to the output end of the second motor; a second rotating shaft is fixedly connected to the output end of the second reducer; and a gear is fixedly connected to the end of the second rotating shaft away from the second reducer, wherein the gear meshes with the rack.

[0014] Furthermore, the protective light-shielding cover mechanism also includes: an opening and closing drive mechanism locking and unlocking device and a rotation drive mechanism locking and unlocking device. The two ends of the opening and closing drive mechanism locking and unlocking device are respectively fixed to the protective light-shielding cover and the side of the conductive slip ring by mounting plates; the two ends of the rotation drive mechanism locking and unlocking device are respectively fixed to the conductive slip ring and the side of the light-shielding cover by mounting plates.

[0015] Beneficial effects of the present invention

[0016] Compared with the prior art, the space optical camera lens protective light shield provided in this application has an opening, closing and rotating mechanism that can operate independently, which can adjust the attitude of the protective light shield more efficiently and reduce the need for attitude adjustment and control of the whole machine. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the protective light-shielding cover provided by the present invention;

[0018] Figure 2 This is a side view of the main structure of the protective light-shielding cover provided by the present invention;

[0019] Figure 3 This is a schematic diagram of the overall structure of the protective light-shielding cover provided by the present invention;

[0020] Figure 4 A schematic diagram of the rotation drive mechanism provided by the present invention;

[0021] Figure 5 This is a partial structural schematic diagram provided by the present invention;

[0022] Figure 6This is a schematic diagram of the opening and closing drive mechanism provided by the present invention;

[0023] Figure 7 This is a schematic diagram of the V-shaped bearing mechanism provided by the present invention;

[0024] Figure 8 This is a schematic diagram of the overall structure of the V-shaped bearing mechanism provided by the present invention.

[0025] In the picture,

[0026] 1. Opening / closing mechanism base; 2. Protective light-shielding cover; 3. Opening / closing drive mechanism; 4. Conductive slip ring; 5. Gear ring arc guide rail mechanism; 6. V-bearing mechanism; 7. Rotation drive mechanism; 8. Light-shielding cover; 9. Locking / unlocking device for opening / closing drive mechanism; 10. Locking / unlocking device for rotation drive mechanism.

[0027] 31. First motor; 32. First reducer; 33. Second shaft; 34. Support base; 35. Connecting block;

[0028] 51. Ring gear; 52. Rack; 53. Raised structure;

[0029] 61. Base; 62. Support plate; 63. V-shaped rollers; 64. Groove;

[0030] 71. Second motor; 72. Mounting bracket; 73. Second reducer; 74. Second shaft; 75. Gear. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] It should be noted that the terms "upper", "side", "front", "rear", etc. used herein indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of illustrative purposes and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0033] See Figure 1-8 ;

[0034] A protective light-shielding cover mechanism for a space optical camera lens, the protective light-shielding cover mechanism comprising:

[0035] An opening and closing mechanism base 1, wherein a circular hole 11 is formed in the middle of the opening and closing mechanism base 1;

[0036] A protective light-shielding cover 2 is connected to the top rear side of the opening and closing mechanism base 1 via an opening and closing drive mechanism 3. Further, the opening and closing drive mechanism 3 includes: a first motor 31, a reducer 32 fixedly connected to the output end of the first motor 31, a first rotating shaft 33 fixedly connected to the output end of the reducer 32, the bottom of the first motor 31 and the first rotating shaft 33 being mounted on the opening and closing mechanism base 1 via a support seat 34, and the first rotating shaft 33 being fixedly connected to the bottom of the protective light-shielding cover 2 via a connecting block 35.

[0037] A conductive slip ring 4 is fixedly connected at its top to the bottom of the opening / closing mechanism base 1. A toothed arc-shaped guide rail mechanism 5 is fixedly connected at the bottom of the conductive slip ring 4. Multiple evenly arranged V-shaped bearing mechanisms 6 are slidably connected to the bottom of the toothed arc-shaped guide rail mechanism 5, and all V-shaped bearing mechanisms 6 are fixed to the top of the light shield 8. Further, the toothed arc-shaped guide rail mechanism 5 includes an annular toothed ring 51, a rack 52 fixedly connected along the outer circumference of the annular toothed ring 51, and a pair of protruding structures 53 fixedly connected to both sides of the bottom of the annular toothed ring 51. The conductive slip ring 4 is used for power and signal transmission.

[0038] Furthermore, each of the V-shaped bearing mechanisms 6 includes: a base 61, the bottom of which is fixedly connected to the top of the light shield 8, a support plate 62 fixedly connected to the top of the base 61, two pairs of V-shaped rollers 63 rotatably connected to the support plate 62, each V-shaped roller 63 being able to rotate around its own axis, and each V-shaped roller 63 having a groove 64 in the middle, the bottom of the annular toothed ring 51 being arranged between the two pairs of V-shaped rollers 63, and the protruding structure 53 cooperating with the groove 64.

[0039] A rotation drive mechanism 7 is fixedly connected to the top side of the sunshade 8. The rotation drive mechanism 7 is connected to the gear ring arc guide rail mechanism 5 for driving the gear ring arc guide rail mechanism 5 to rotate inside the V-shaped bearing mechanism 6. Further, the rotation drive mechanism 7 includes: a second motor 71, which is fixed to the top side of the sunshade 8 by a mounting bracket 72. A second reducer 73 is fixedly connected upward at the output end of the second motor 71. A second rotating shaft 74 is fixedly connected to the output end of the second reducer 73. A gear 75 is fixedly connected to the end of the second rotating shaft 74 away from the second reducer 73. The gear 75 meshes with the rack 52.

[0040] Furthermore, the protective light-shielding cover mechanism also includes: an opening and closing drive mechanism locking and unlocking device 9 and a rotation drive mechanism locking and unlocking device 10. The two ends of the opening and closing drive mechanism locking and unlocking device 9 are respectively fixed to the sides of the protective light-shielding cover 2 and the conductive slip ring 4 by mounting plates; the two ends of the rotation drive mechanism locking and unlocking device 10 are respectively fixed to the sides of the conductive slip ring 4 and the light-shielding cover 8 by mounting plates.

[0041] Usage: The first motor 31 is driven to rotate in both directions, which enables the opening and closing of the protective light-shielding cover 2; the V-shaped bearing mechanism 6 and the guide rail part of the gear ring arc guide rail assembly 5 form a rolling guide rail pair; the rotation drive assembly 7 and the rack part of the gear ring arc guide rail assembly 5 form a gear pair, which drives the second motor 71 to rotate, which can directly drive the gear 75 to rotate, and indirectly drive the rack 52 meshing with it to rotate, thereby realizing the synchronous rotation of the conductive slip ring 4, the opening and closing mechanism base 1, the opening and closing drive mechanism 3 and the protective light-shielding cover 2 fixed above the gear ring arc guide rail assembly.

[0042] The opening and closing drive mechanism 3 can replace the direct drive of the rotary motor reducer with gear transmission, worm gear transmission, belt pulley transmission and chain transmission; the rotation drive mechanism 7 can replace gear transmission with worm gear transmission, belt pulley transmission and chain transmission; the conductive slip ring structure uses general structural components to connect the rotation mechanism and the opening and closing mechanism base 4 for replacement, and uses a wire-spinning method to realize the signal and power transmission of the rotating part.

[0043] The light shield 8 can adopt a general lens front structure, that is, it does not have a structure to eliminate stray light.

Claims

1. A space optical camera lens protection cover plate mechanism, characterized in that, The protective light-shielding cover mechanism includes: An opening and closing mechanism base (1) has a circular hole (11) in the middle. A protective light-shielding cover (2) is connected to the top rear side of the opening and closing mechanism base (1) via an opening and closing drive mechanism (3); A conductive slip ring (4) is fixedly connected to the bottom of the opening and closing mechanism base (1) at its top. A toothed arc guide rail mechanism (5) is fixedly connected to the bottom of the conductive slip ring (4). A plurality of evenly arranged V-shaped bearing mechanisms (6) are slidably connected to the bottom of the toothed arc guide rail mechanism (5). All V-shaped bearing mechanisms (6) are fixed to the top of the light shield (8). The top side of the light shield (8) is fixedly connected to a rotation drive mechanism (7), which is connected to the gear ring arc guide rail mechanism (5) for driving the gear ring arc guide rail mechanism (5) to rotate inside the V-shaped bearing mechanism (6).

2. The space optical camera lens protective light-shielding cover mechanism according to claim 1, characterized in that, The opening and closing drive mechanism (3) includes: a first motor (31), a reducer (32) is fixedly connected to the output end of the first motor (31), a first rotating shaft (33) is fixedly connected to the output end of the reducer (32), the bottom of the first motor (31) and the first rotating shaft (33) are mounted on the base (1) of the opening and closing mechanism through a support seat (34), and the first rotating shaft (33) is fixedly connected to the bottom of the protective light shield (2) through a connecting block (35).

3. The space optical camera lens protective light-shielding cover mechanism according to claim 1, characterized in that, The toothed ring arc guide mechanism (5) includes: an annular toothed ring (51), a toothed rack (52) is fixedly connected to the outer side of the annular toothed ring (51) along its circumference, and a pair of protruding structures (53) are fixedly connected to the bottom sides of the annular toothed ring (51).

4. The space optical camera lens protective light-shielding cover mechanism according to claim 3, characterized in that, Each of the V-shaped bearing mechanisms (6) includes: a base (61), the bottom of which is fixedly connected to the top of the light shield (8), a support plate (62) fixedly connected to the top of the base (61), two pairs of V-shaped rollers (63) rotatably connected to the support plate (62), each V-shaped roller (63) having a groove (64) in the middle, the bottom of the annular toothed ring (51) being arranged between the two pairs of V-shaped rollers (63), and the protrusion structure (53) cooperating with the groove (64).

5. The space optical camera lens protective light-shielding cover mechanism according to claim 3, characterized in that, The rotation drive mechanism (7) includes: a second motor (71), which is fixed to the top side of the sunshade (8) by a mounting bracket (72). The output end of the second motor (71) is fixedly connected to a second reducer (73) upward. The output end of the second reducer (73) is fixedly connected to a second rotating shaft (74). A gear (75) is fixedly connected to the end of the second rotating shaft (74) away from the second reducer (73). The gear (75) meshes with the rack (52).

6. A lens protective light-shielding cover mechanism for a space optical camera according to any one of claims 1-5, characterized in that, The protective light-shielding cover mechanism also includes: an opening and closing drive mechanism locking and unlocking device (9) and a rotation drive mechanism locking and unlocking device (10). The two ends of the opening and closing drive mechanism locking and unlocking device (9) are respectively fixed to the sides of the protective light-shielding cover (2) and the conductive slip ring (4) by mounting plates. The two ends of the rotation drive mechanism locking and unlocking device (10) are respectively fixed to the sides of the conductive slip ring (4) and the light shield (8) by mounting plates.

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