WO2021235810A1 - Deployment-type mirror assembly - Google Patents

Deployment-type mirror assembly Download PDF

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Publication number
WO2021235810A1
WO2021235810A1 PCT/KR2021/006179 KR2021006179W WO2021235810A1 WO 2021235810 A1 WO2021235810 A1 WO 2021235810A1 KR 2021006179 W KR2021006179 W KR 2021006179W WO 2021235810 A1 WO2021235810 A1 WO 2021235810A1
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WO
WIPO (PCT)
Prior art keywords
hub
main
segments
link
mirror assembly
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PCT/KR2021/006179
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French (fr)
Korean (ko)
Inventor
김석환
최영도
성세현
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텔레픽스 주식회사
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Publication of WO2021235810A1 publication Critical patent/WO2021235810A1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors

Definitions

  • the present invention can be applied to a small satellite or nano-satellite, and relates to a deployable mirror assembly in which a primary mirror is launched into orbit in a folded state and then a primary mirror is deployed in orbit.
  • the telescope optical system that condenses the transmitter or receiver is used for space telescopes that fly in space orbits and detect targets, or for free space communication used on the ground and in the air.
  • the larger the diameter of the optical system the greater the light-collecting power and the imaging power.
  • the larger the size the higher the manufacturing cost, the lower the bonding performance, and the like.
  • optical systems used for space telescopes, satellite cameras, etc. arranged on orbits in outer space are folded and mounted in a small volume when launched, transported to orbits, and when they reach orbits, the folded optical systems are deployed.
  • This deployment type of optical system is being developed so that a deployable optical system or a deployable satellite structure can be used in a next-generation large satellite.
  • a small satellite or nanosatellite with a size of 1U to 10U has a very small allowable volume. That is, it is difficult for small satellites or nano-satellites to use the optical system as it is in the foldable or deployable method used in large space telescopes.
  • a small artificial satellite is coupled to a hub and has a rectangular shape, and a deployment type satellite optical system is used in which four primary mirror segments spaced apart by 90 degrees in the azimuth direction are deployed in a direction away from the optical axis.
  • a small artificial satellite has a disadvantage in that light collecting power and image forming power are lowered because there is an empty space between the main mirror segments constituting the primary mirror.
  • the conventional small-sized artificial satellite has a deployment control device for deploying the main mirror on the opposite side of the reflecting surface of the reflector, occupies a lot of space, so it is difficult to downsize.
  • an object of the present invention is to increase the light collecting power and imaging power by making a reflective mirror surface as a whole between the main mirror segments when the primary mirror segment is unfolded. It is to provide a deployable mirror assembly.
  • the present invention is to provide a deployable mirror assembly that can reduce the overall size by simply configuring the deployment control device for deploying the main mirror.
  • the present invention provides a hub, a plurality of main diameter segments disposed on the outside of the hub, a connection part connecting a plurality of the main diameter segments to each other, and disposed between the hub and the connection part, It provides a deployable mirror assembly including a deployment part for expanding a plurality of the main mirror segments.
  • the connecting portion is formed of a hinge member connecting adjacent portions of the plurality of main diameter segments.
  • connection part connects adjacent main diameter segments among the plurality of main diameter segments, and includes a movable hinge part that moves outwardly of the main diameter segment and to which the development part is coupled.
  • the movable hinge portion is disposed on a side portion of the main diameter segment.
  • connection part may include a fixed hinge part connecting adjacent main diameter segments among the plurality of main diameter segments.
  • the deployment part includes a moving member moving along the longitudinal direction of the hub, a first link having one end hinged to the moving member, and a second link having one end hinged to the hub and the other end hinged to the connection unit, It is preferable that the other end of the first link is hinged to the middle portion of the second link.
  • the deployment part includes an elastic member to which an elastic force acts to move the second link in a direction in which the main diameter segment is unfolded,
  • the elastic member is preferably disposed between the first link and the second link or the hub.
  • the deployment unit may include an operation unit installed on the hub and controlled by a control unit to operate the deployment unit so that the main diameter segment is deployed.
  • the moving member is formed in a circular band shape, and has a guide protrusion extending in the center direction,
  • the hub is formed along the longitudinal direction on the outer peripheral side and includes a guide groove for guiding the guide protrusion.
  • a reflective mirror surface is formed as a whole without an empty space between the main mirror segments, so that the light collecting power and the imaging power can be increased.
  • a small satellite or nano-satellite can be manufactured compactly by installing a device for developing a primary mirror in the hub to reduce the space on the rear side of the primary mirror.
  • a small satellite or a nano-satellite can be manufactured compactly by designing a deployment unit for expanding the main mirror with a simple structure to reduce the installation space.
  • FIG. 1 is a perspective view showing a deployable mirror assembly for explaining a first embodiment of the present invention.
  • FIG. 2 is a front view of FIG. 1 ;
  • FIG 3 is a view for explaining a process in which the deployable mirror assembly according to the first embodiment of the present invention is deployed.
  • FIG 4 is a view showing a deployed state in which the deployable mirror assembly according to the first embodiment of the present invention is deployed.
  • FIG. 5 is a front view of FIG. 4 ;
  • FIG. 6 is a view showing the main part of the deployable mirror assembly according to the first embodiment of the present invention by cutting it in a direction parallel to the axis.
  • FIG. 7 is a view for explaining a process of deploying the deployable mirror assembly according to the first embodiment of the present invention.
  • FIG. 8 is a view illustrating in detail part A of FIG. 4 .
  • FIG. 9 is a detailed view showing part B of FIG. 4 .
  • FIG. 10 is a view showing in detail part C of FIG. 4 .
  • FIG. 11 is a view showing a deployable mirror assembly according to a second embodiment of the present invention.
  • FIG. 12 is a diagram illustrating a process in which the deployable mirror assembly according to the second embodiment of the present invention is deployed.
  • FIG. 13 is a view illustrating a deployed state in which the deployable mirror assembly according to the second embodiment of the present invention is deployed.
  • FIG. 1 is a view for explaining a first embodiment of the present invention
  • FIG. 2 is a front view of FIG. 1 showing the unfolded mirror assembly in a folded state
  • 3 is a view showing a partially deployed shape of the deployable mirror assembly according to the first embodiment of the present invention
  • FIG. 4 is a diagram showing a deployed state of the deployable mirror assembly according to the first embodiment of the present invention.
  • the deployable mirror assembly of the first embodiment of the present invention includes a hub 100 , a primary mirror 130 , a connection part 150 , and a deployment part 170 .
  • the hub 100 is a portion forming a cylindrical structure disposed parallel to the optical axis of the main reflector.
  • the hub 100 has a cylindrical shape and a guide groove 101 is formed on an outer circumferential surface along the longitudinal direction.
  • a plurality of guide grooves 101 may be formed at regular intervals.
  • the guide groove 101 is described as protruding to the outside of the hub 100 , but it may be formed to be recessed in the hub 100 along the longitudinal direction.
  • the main mirror 130 is configured by connecting a plurality of primary mirror segments 131 and 133 to each other. That is, several main mirror segments 131 and 133 are connected to each other to form the main mirror 130 .
  • the main diameter segments 131 and 133 will be described by showing the case of six as an example.
  • the main mirror segments 131 and 133 may be composed of six or more, for example, may be composed of nine or more to form the main mirror 130 .
  • the overall diameter (size) of the main mirror 130 in a folded state may be made smaller.
  • the main diameter segments 131 and 133 may be disposed on the outer peripheral surface of the hub 100 .
  • the main diameter segments 131 and 133 may be disposed to be spaced apart from the outer peripheral surface of the hub 100 .
  • the main diameter segments 131 and 133 have grooves 131a and 133a formed on sides adjacent to each other.
  • the grooves 131a and 133a of the main diameter segments 131 and 133 are formed on the side surfaces of the main diameter segments 131 and 133 in a radial direction from the center of the axis based on the expanded state of the main diameter 130 . That is, the main diameter segments 131 and 133 are formed in a sectoral shape, and groove portions 131a and 133a are respectively formed on sides facing each other adjacent to each other.
  • the grooves 131a and 133a of the main diameter segments 131 and 133 may be formed in a predetermined section in the middle of the main diameter segments 131 and 133 .
  • the connecting portion 150 is a portion connecting adjacent portions of the plurality of main diameter segments 131 and 133 .
  • a hinge member may be used for the connection part 150 .
  • the connection part 150 includes a movable hinge part 151 and a fixed hinge part 161 .
  • the movable hinge part 151 As shown in the movable hinge part 151, the main diameter segments 131 and 133 adjacent to each other among the plurality of main diameter segments 131 and 133 are connected to each other.
  • the movable hinge part 151 includes a movable hinge shaft 153 , a first movable part 155 , a second movable part 157 , and a link connection part 159 .
  • the movable hinge shaft 153 has a cylindrical shape.
  • the first moving part 155 is rotatably coupled to the moving hinge shaft 153 and may be partially formed in a plate or protruding shape.
  • the first moving part 155 may move along the groove part 131a formed on the side surface of the main diameter segment 131 while being rotatably coupled to the moving hinge shaft 153 . That is, the first moving part 155 may be inserted into the groove part 131a formed on the side surface of the main diameter segment 131 to move a predetermined section along the groove part 131a.
  • the second moving part 157 is rotatably coupled to the moving hinge shaft 153 and may be partially formed in a plate or protruding shape.
  • the second moving part 157 is rotatably coupled to the moving hinge shaft 153 along the side of the other main diameter segment 133 disposed adjacent to the main diameter segment 131 into which the first moving part 155 is fitted. It may be formed in a protruding shape to be movable.
  • the second moving part 157 may be fitted in another groove part 133a formed in another main diameter segment 133 adjacent to the main diameter segment 131 into which the first moving part 155 is fitted to move a partial section.
  • the movable hinge part 151 may move in an outward direction of the main diameter segments 131 and 133 .
  • the link connection part 159 is rotatably coupled to the movable hinge shaft 153 and includes a protrusion 159a that is partially extended and protruded.
  • the movable hinge shaft 153 may have a first movable part 155 and a second movable part 157 coupled to a side thereof, and a link connection part 159 may be coupled to a central portion of the movable hinge shaft 153 . .
  • These movable hinge shafts 153 are respectively installed at adjacent positions of the main diameter segments 131 and 133 .
  • the fixed hinge part 161 may be installed between the main diameter segments 131 and 133 . That is, the fixed hinge part 161 is installed in an adjacent part of the other main diameter segments 131 and 133 where the movable hinge part 151 is not installed. In other words, the main diameter segments 131 and 133 are provided with a movable hinge part 151 on one side adjacent to each other, and a fixed hinge part 161 on the other side adjacent to each other.
  • the fixed hinge part 161 includes a fixed hinge shaft 163 , a first fixing part 165 , and a second fixing part 167 .
  • the fixed hinge shaft 163 may have a cylindrical shape.
  • the first fixing part 165 is hinged to the fixing hinge shaft 163 and is formed in the shape of a plate or a protrusion.
  • the first fixing part 165 is coupled to the side of the main diameter segment 133 on which the movable hinge part 151 is not installed.
  • the second fixing part 167 is hinged to the fixing hinge shaft 163 and has a plate or protrusion shape.
  • the second fixing part 167 is coupled to the side of the main diameter segment 131 on which the movable hinge part 151 is not installed.
  • the above-described movable hinge unit 151 may fold the main mirror segments 131 and 133 in a direction in which the reflective surfaces 131b and 133b of the main mirror segments 131 and 133 face each other.
  • the above-described fixed hinge part 161 may fold another main diameter segment 131 and 133 in a direction opposite to the direction in which the main diameter segments 131 and 133 are folded by the above-described movable hinge part 151 . That is, the fixing hinge part 161 may fold the main mirror segments 131 and 133 so that the rear surfaces of the reflective surfaces 131b and 133b of the main mirror segments 131 and 133 face each other.
  • the main mirror segments 131 and 133 that are folded by the movable hinge unit 151 may be folded opposite the reflective surfaces 131b and 133b.
  • the main mirror segments 131 and 133 that are folded by the fixed hinge part 161 may be folded so that the reflective surfaces 131b and 133b face each other.
  • the movable hinge part 151 and the fixed hinge part 161 fold the adjacent main diameter segments 131 and 133 in opposite directions so that when the main diameter segments 131 and 133 are completely folded toward the hub 100, the overall diameter can be minimized.
  • the deployment unit 170 may be coupled to the hub 100 and the movable hinge unit 151 to expand the main diameter segments 131 and 133 .
  • the deployment unit 170 includes a moving member 171 , a first link 173 , and a second link 175 .
  • the movable member 171 has a ring shape, is disposed on the outer periphery of the hub 100 , and can move along the longitudinal direction of the hub 100 .
  • the moving member 171 includes a plurality of guide protrusions 171a in a central direction.
  • the guide protrusion 171a of the moving member 171 is inserted into the guide groove 101 of the hub 100 and moves along the longitudinal direction of the hub 100 .
  • the moving member 171 of the deployment part 170 of the first embodiment of the present invention is preferably disposed on the hub 100 on the rear side of the reflective surfaces 131b and 133b of the main mirror 130 .
  • first link 173 is hinged to the moving member 171 .
  • the other side of the first link 173 is hinged to the middle portion of the second link 175 . Accordingly, when the moving member 171 moves in a direction parallel to the axis of the hub 100 , the first link 173 hinged to the moving member 171 may move together.
  • the second link 175 is hinged to the middle portion of the hub 100 .
  • the second link 175 may be directly hinged to the hub 100 or a separate member may be fixed to the hub 100 and hinged to the hub 100 . That is, the second link 175 is fixed to the hub 100 or a portion hinged to the hub 100 side.
  • the second link 175 is hinge-coupled to the link connection part 159 of the movable hinge part 151 on the other side (refer to FIG. 8).
  • the deployment part 170 includes an elastic member 177 to which an elastic force acts so that the first link 173 and the second link 175 are moved in the direction in which the main diameter segments 131 and 133 are unfolded.
  • the elastic member 177 may be installed between the first link 173 and the second link 175 or the first link 173 and the hub 100 (see FIG. 6 ).
  • a tension coil spring may be installed.
  • the elastic member 177 is described as an example, and the first link 173 and the second link 175 in the direction in which the main diameter segments 131 and 133 are deployed have an elastic force. If it is, it is not limited to the installation position or the elastic direction.
  • the deployment part 170 of the first embodiment of the present invention includes an operation part 179 serving as a trigger so that the main diameter segment 131 is deployed.
  • the operation unit 179 is installed in the hub 100 to limit the movement of the above-described moving member 171 .
  • the operation unit 179 may be formed of a solenoid actuator controlled by a control unit. This operation unit 179 can only maintain the moving member 171 in a fixed state initially, and any device having a function to release the fixed state of the moving member 171 when necessary or controlled. either can be applied.
  • the operation unit 179 In a state in which the main diameter segments 131 and 133 are folded to the hub 100 (see FIGS. 1, 2 and 6 ), the operation unit 179 is driven by the control unit. Then, the operation unit 179 operates to release the state in which the position of the moving member 171 is fixed. At this time, the elastic member 177 moves the movable member 171 in the axial direction by the elastic force. Then, the guide protrusion 171a of the moving member 171 moves along the guide groove 101 of the hub 100 .
  • the first link 173 presses the middle portion of the second link 175 .
  • the second link 175 moves in the direction in which the main diameter segments 131 and 133 are unfolded.
  • the second link 175 moves the link connection part 159 of the movable hinge part 151 .
  • the first moving part 155 and the second moving part 157 of the movable hinge part 151 are guided and moved in the radial direction (outward direction) along the grooves 131a and 133a of the main diameter segments 131 and 133 . do. Accordingly, as shown in FIG. 4 , a plurality of main diameter segments 131 and 133 are developed.
  • This first embodiment of the present invention has a relatively small diameter (h1, see FIG. 2) in a state in which the plurality of main diameter segments 131 and 133 are folded.
  • the plurality of main diameter segments 131 and 133 have a large diameter (h2, see FIG. 5 ) in the deployed state.
  • the diameter h1 in a state in which the main diameter segments 131 and 133 are folded can be made smaller.
  • the reflective surfaces may form the main mirror 130 connected as a whole. Accordingly, it is possible to prevent an empty space from being formed between the main mirror segments 131 and 133 constituting the main mirror 130 , thereby improving light collecting power and imaging power.
  • the first embodiment of the present invention is to reduce the space on the opposite side of the reflective surface of the main mirror 130 by installing the deployment part 170 for deploying the main mirror 130 on the outer peripheral side of the hub 100 to reduce the size of the satellite and Nanosatellites can be realized.
  • FIG. 11 is a view showing a state in which the deployable mirror assembly is folded in order to explain a second embodiment of the present invention
  • FIG. 12 is a view showing a process in which the deployable mirror assembly according to the second embodiment of the present invention is deployed.
  • FIG. 13 is a view showing a deployed state in which the deployable mirror assembly according to the second embodiment of the present invention is deployed.
  • the first embodiment of the present invention has described a structure in which the moving member 171 is installed at the rear end of the hub 100 and moves along the longitudinal direction of the hub 100 .
  • the moving member 171 is installed in the middle portion of the hub 100 to move toward the rear end in the longitudinal direction of the hub 100 .
  • This second embodiment of the present invention can increase the degree of freedom in design when the moving member 171 is interfered with by other parts, and is designed in a direction to further reduce the diameter h1 in the state where the main diameter 130 is folded. can do.
  • the second embodiment of the present invention can implement the present invention in various ways and can increase the degree of freedom in design so as to be optimized for miniaturization.
  • the operation unit 179 supports the moving member 171 and the elastic member 177 is installed as in the first embodiment.
  • the moving member 171 moves along the longitudinal direction of the hub 100 by the elastic force of the elastic member 177 .
  • the moving member 171 moves from the center of the hub 100 to the rear end of the hub 100 (in the direction opposite to the reflective surface of the main mirror).
  • the first link 173 presses the middle portion of the second link 175 .
  • the second link 175 moves in the direction in which the main diameter segments 131 and 133 are unfolded.
  • the second link 175 moves the link connection part 159 of the movable hinge part 151 .
  • the first moving part 155 and the second moving part 157 of the movable hinge part 151 are guided and moved in the radial direction (outward direction) along the grooves 131a and 133a of the main diameter segments 131 and 133 . do. Accordingly, as shown in FIG. 13 , a plurality of main diameter segments 131 and 133 are developed.
  • the main mirror 130 in the deployed state is disposed on the rear end side of the hub 100 (the opposite side of the reflection surface of the main mirror). That is, in the first embodiment of the present invention, the main mirror 103 in the deployed state is disposed in the middle portion of the hub 100 , but in the second embodiment, it is disposed on the outer periphery of the end portion of the rear end of the hub 100 . That is, in the second embodiment of the present invention, design freedom can be increased by preventing interference with other components or maximizing reflection efficiency.

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

Disclosed is a deployment-type mirror assembly which can be applied to a small-sized satellite or a nanosatellite and deploys a primary mirror on the orbit after being launched to the orbit with the primary mirror folded. The deployment-type mirror assembly of the present invention comprises: a plurality of primary mirror segments arranged on the outside of a hub; connection units for connecting the plurality of primary mirror segments to one another; and a deployment unit which is provided between the hub and the connection units and unfolds the plurality of primary mirror segments.

Description

전개형 미러 어셈블리Flattened Mirror Assembly
본 발명은 소형 위성 또는 나노 위성에 적용될 수 있으며, 주경(Primary mirror)이 폴딩된 상태로 궤도로 발사한 후 궤도상에서 주경(Primary mirror)을 전개시키는 전개형 미러 어셈블리에 관한 것이다.The present invention can be applied to a small satellite or nano-satellite, and relates to a deployable mirror assembly in which a primary mirror is launched into orbit in a folded state and then a primary mirror is deployed in orbit.
송신부 또는 수신부에 집광하는 망원경 광학계는 우주 괘도를 비행하며 목표물을 감지하는 우주 망원경 또는 지상 및 공중에서 사용되는 자유공간 광통신(Free space communication)에 사용한다. 광학계는 그 직경이 크면 클수록 집광력과 결상력이 증대되지만, 크기가 커지면 제조 단가의 증대, 결합 성능의 저하 등이 발생한다. The telescope optical system that condenses the transmitter or receiver is used for space telescopes that fly in space orbits and detect targets, or for free space communication used on the ground and in the air. The larger the diameter of the optical system, the greater the light-collecting power and the imaging power. However, the larger the size, the higher the manufacturing cost, the lower the bonding performance, and the like.
특히, 우주 공간의 괘도상에 배치되는 우주 망원경, 위성 카메라 등에 사용되는 광학계는 발사시 접어서 작은 부피로 장착되어 괘도에 운반되고, 궤도에 도달되면 접힌 광학계를 전개시킨다. In particular, optical systems used for space telescopes, satellite cameras, etc. arranged on orbits in outer space are folded and mounted in a small volume when launched, transported to orbits, and when they reach orbits, the folded optical systems are deployed.
이러한 전개방식의 광학계는 차세대 대형 인공위성에서 전개형 광학계 또는 전개형 위성 구조물이 사용될 수 있도록 개발되고 있다. 그러나 크기가 1U~10U 정도의 소형위성 또는 나노 위성은 그의 허용 부피가 매우 작다. 즉, 소형위성 또는 나노 위성은 대형 우주 망원경에서 사용되는 접이식 또는 전개식 방식으로 광학계를 그대로 사용하는데 어려움이 있다.This deployment type of optical system is being developed so that a deployable optical system or a deployable satellite structure can be used in a next-generation large satellite. However, a small satellite or nanosatellite with a size of 1U to 10U has a very small allowable volume. That is, it is difficult for small satellites or nano-satellites to use the optical system as it is in the foldable or deployable method used in large space telescopes.
소형의 인공위성은 허브에 결합되고 사각형상으로 이루어지며, 방위각 방향 으로 90도 간격이 떨어진 4개의 주경 세그먼트(Primary mirror segment)를 광축에서 멀어지는 방향으로 전개하는 방식의 전개형 위성 광학계가 사용되고 있다. 그러나 소형의 인공위성은 주경(Primary mirror)을 구성하는 주경 세그먼트 사이에 빈 공간이 생겨 집광력 및 결상력이 떨어지는 단점이 있다.A small artificial satellite is coupled to a hub and has a rectangular shape, and a deployment type satellite optical system is used in which four primary mirror segments spaced apart by 90 degrees in the azimuth direction are deployed in a direction away from the optical axis. However, a small artificial satellite has a disadvantage in that light collecting power and image forming power are lowered because there is an empty space between the main mirror segments constituting the primary mirror.
또한, 종래의 소형의 인공위성은 반사경의 반사면 반대 방향 측에 주경을 전개하기 위한 전개조절장치가 배치되어 많은 공간을 차지하여 소형화에 어려움이 있다.In addition, the conventional small-sized artificial satellite has a deployment control device for deploying the main mirror on the opposite side of the reflecting surface of the reflector, occupies a lot of space, so it is difficult to downsize.
따라서, 본 발명은 상기한 문제점을 해결하기 위하여 제안된 것으로써, 본 발명의 목적은 주경 세그먼트(Primary mirror segment)를 펼쳤을 때 주경 세그먼트 사이에 전체적으로 반사경면이 이루어지도록 하여 집광력과 결상력을 증대시키는 전개형 미러 어셈블리를 제공하는데 있다.Therefore, the present invention has been proposed to solve the above problems, and an object of the present invention is to increase the light collecting power and imaging power by making a reflective mirror surface as a whole between the main mirror segments when the primary mirror segment is unfolded. It is to provide a deployable mirror assembly.
또한, 본 발명은 컴팩트한 전개형 미러 어셈블리를 제공하는데 있다. It is also an object of the present invention to provide a compact deployable mirror assembly.
또한, 본 발명은 주경을 전개하는 전개 조절장치를 간단하게 구성하여 전체 크기를 줄일 수 있는 전개형 미러 어셈블리를 제공하는데 있다.In addition, the present invention is to provide a deployable mirror assembly that can reduce the overall size by simply configuring the deployment control device for deploying the main mirror.
상기와 같은 본 발명의 목적을 달성하기 위하여, 본 발명은 허브, 상기 허브의 외측에 배치되는 복수의 주경 세그먼트, 복수의 상기 주경 세그먼트를 서로 연결하는 연결부, 그리고 상기 허브와 상기 연결부 사이에 배치되어 복수의 상기 주경 세그먼트를 펼치는 전개부를 포함하는 전개형 미러 어셈블리를 제공한다.In order to achieve the object of the present invention as described above, the present invention provides a hub, a plurality of main diameter segments disposed on the outside of the hub, a connection part connecting a plurality of the main diameter segments to each other, and disposed between the hub and the connection part, It provides a deployable mirror assembly including a deployment part for expanding a plurality of the main mirror segments.
상기 연결부는 복수의 상기 주경 세그먼트의 인접한 부분을 연결하는 힌지부재로 이루어지는 것이 바람직하다.Preferably, the connecting portion is formed of a hinge member connecting adjacent portions of the plurality of main diameter segments.
상기 연결부는 복수의 상기 주경 세그먼트 중 서로 인접하는 주경 세그먼트를 연결하며, 상기 주경 세그먼트의 외측 방향으로 이동하고 상기 전개부가 결합되는 이동 힌지부를 포함하는 것이 바람직하다.Preferably, the connection part connects adjacent main diameter segments among the plurality of main diameter segments, and includes a movable hinge part that moves outwardly of the main diameter segment and to which the development part is coupled.
상기 이동 힌지부는 상기 주경 세그먼트의 측면부에 배치되는 것이 바람직하다.Preferably, the movable hinge portion is disposed on a side portion of the main diameter segment.
상기 연결부는 복수의 상기 주경 세그먼트 중 서로 인접하는 주경 세그먼트를 연결하는 고정 힌지부를 포함할 수 있다.The connection part may include a fixed hinge part connecting adjacent main diameter segments among the plurality of main diameter segments.
상기 전개부는 상기 허브의 길이 방향을 따라 이동하는 이동부재, 상기 이동부재에 일단이 힌지 결합되는 제1 링크, 상기 허브에 일단 힌지 결합되고 타단이 상기 연결부에 힌지 결합되는 제2 링크를 포함하고, 상기 제1 링크의 타단이 상기 제2 링크의 중간부에 힌지 결합되는 것이 바람직하다. The deployment part includes a moving member moving along the longitudinal direction of the hub, a first link having one end hinged to the moving member, and a second link having one end hinged to the hub and the other end hinged to the connection unit, It is preferable that the other end of the first link is hinged to the middle portion of the second link.
상기 전개부는 상기 제2 링크를 상기 주경 세그먼트가 펼쳐지는 방향으로 이동시키도록 탄성력이 작용하는 탄성부재를 포함하고,The deployment part includes an elastic member to which an elastic force acts to move the second link in a direction in which the main diameter segment is unfolded,
상기 탄성부재는 상기 제1 링크와 상기 제2 링크 또는 상기 허브의 사이에 배치되는 것이 바람직하다.The elastic member is preferably disposed between the first link and the second link or the hub.
상기 전개부는 상기 허브에 설치되며 제어부에 의해 제어되어 상기 주경 세그먼트가 전개되도록 상기 전개부를 작동시키는 작동부를 포함할 수 있다.The deployment unit may include an operation unit installed on the hub and controlled by a control unit to operate the deployment unit so that the main diameter segment is deployed.
상기 이동부재는 원형의 띠 형상으로 이루어지고, 중심 방향으로 연장되는 가이드 돌출부를 구비하고,The moving member is formed in a circular band shape, and has a guide protrusion extending in the center direction,
상기 허브는 외주측에 길이 방향을 따라 형성되며 상기 가이드 돌출부를 안내하는 가이드 홈부를 구비하는 것이 바람직하다.Preferably, the hub is formed along the longitudinal direction on the outer peripheral side and includes a guide groove for guiding the guide protrusion.
이와 같은 본 발명은 주경 세그먼트(Primary mirror segment)를 서로 연결부로 연결하여 주경을 펼쳤을 때 주경 세그먼트 사이에 빈 공간이 없이 전체적으로 반사경면이 형성되도록 하여 집광력과 결상력을 증대시킬 수 있다.As described above, in the present invention, when the primary mirror segments are connected to each other by connecting portions, when the main mirrors are opened, a reflective mirror surface is formed as a whole without an empty space between the main mirror segments, so that the light collecting power and the imaging power can be increased.
또한, 본 발명은 주경(Primary mirror)을 전개하기 위한 장치를 허브에 설치하여 주경의 후면 쪽의 공간을 줄여 소형 위성 또는 나노 위성을 컴팩트하게 제작할 수 있다. In addition, according to the present invention, a small satellite or nano-satellite can be manufactured compactly by installing a device for developing a primary mirror in the hub to reduce the space on the rear side of the primary mirror.
또한, 본 발명은 주경을 전개하는 전개부를 간단한 구조로 설계하여 설치 공간을 줄여 소형 위성 또는 나노 위성을 컴팩트하게 제작할 수 있다.In addition, according to the present invention, a small satellite or a nano-satellite can be manufactured compactly by designing a deployment unit for expanding the main mirror with a simple structure to reduce the installation space.
도 1은 본 발명의 제1 실시예를 설명하기 위한 전개형 미러 어셈블리를 도시한 사시도이다.1 is a perspective view showing a deployable mirror assembly for explaining a first embodiment of the present invention.
도 2는 도 1의 정면도이다.FIG. 2 is a front view of FIG. 1 ;
도 3은 본 발명의 제1 실시예의 전개형 미러 어셈블리가 전개되는 과정을 설명하기 위한 도면이다.3 is a view for explaining a process in which the deployable mirror assembly according to the first embodiment of the present invention is deployed.
도 4는 본 발명의 제1 실시예의 전개형 미러 어셈블리가 전개된 상태를 도시한 도면이다.4 is a view showing a deployed state in which the deployable mirror assembly according to the first embodiment of the present invention is deployed.
도 5는 도 4의 정면도이다.FIG. 5 is a front view of FIG. 4 ;
도 6은 본 발명의 제1 실시예의 전개형 미러 어셈블리를 축과 나란한 방향으로 잘라서 주요부를 도시한 도면이다. 6 is a view showing the main part of the deployable mirror assembly according to the first embodiment of the present invention by cutting it in a direction parallel to the axis.
도 7은 본 발명의 제1 실시예의 전개형 미러 어셈블리를 전개하는 과정을 설명하기 위한 도면이다.7 is a view for explaining a process of deploying the deployable mirror assembly according to the first embodiment of the present invention.
도 8은 도 4의 A부를 상세하게 도시한 도면이다.FIG. 8 is a view illustrating in detail part A of FIG. 4 .
도 9는 도 4의 B부를 상세하게 도시한 도면이다.FIG. 9 is a detailed view showing part B of FIG. 4 .
도 10은 도 4의 C부를 상세하게 도시한 도면이다.FIG. 10 is a view showing in detail part C of FIG. 4 .
도 11은 본 발명의 제2 실시예의 전개형 미러 어셈블리를 도시한 도면이다.11 is a view showing a deployable mirror assembly according to a second embodiment of the present invention.
도 12는 본 발명의 제2 실시예의 전개형 미러 어셈블리가 전개되는 과정을 도시한 도면이다.12 is a diagram illustrating a process in which the deployable mirror assembly according to the second embodiment of the present invention is deployed.
도 13은 본 발명의 제2 실시예의 전개형 미러 어셈블리가 전개된 상태를 도시한 도면이다.13 is a view illustrating a deployed state in which the deployable mirror assembly according to the second embodiment of the present invention is deployed.
이하, 첨부한 도면을 참조하여 본 발명의 실시예에 대해 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 상세하게 설명한다. 그러나 본 발명은 여러 가지 다른 형태로 구현될 수 있으며 여기에서 설명하는 실시예에 한정되지 않는다. 도면에서 본 발명을 명확하게 설명하기 위해서 설명과 관계없는 부분은 생략하였으며, 명세서 전체를 통하여 동일 또는 유사한 구성요소에 대해서는 동일한 참조부호를 부여하기로 한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, the present invention may be embodied in various other forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.
도 1은 본 발명의 제1 실시예를 설명하기 위한 도면이고, 도 2는 도 1의 정면도로, 접힌 상태의 전개형 미러 어셈블리를 도시하고 있다. 그리고 도 3은 본 발명의 제1 실시예의 전개형 미러 어셈블리가 일부 전개된 형상을 도시한 도면이며, 도 4는 본 발명의 제1 실시예의 전개형 미러 어셈블리가 전개된 상태를 도시한 도면이다.FIG. 1 is a view for explaining a first embodiment of the present invention, and FIG. 2 is a front view of FIG. 1 showing the unfolded mirror assembly in a folded state. 3 is a view showing a partially deployed shape of the deployable mirror assembly according to the first embodiment of the present invention, and FIG. 4 is a diagram showing a deployed state of the deployable mirror assembly according to the first embodiment of the present invention.
본 발명의 제1 실시예의 전개형 미러 어셈블리는 허브(100), 주경(primary mirror, 130), 연결부(150), 그리고 전개부(170)를 포함한다.The deployable mirror assembly of the first embodiment of the present invention includes a hub 100 , a primary mirror 130 , a connection part 150 , and a deployment part 170 .
허브(100)는 주반사경의 광축과 나란하게 배치되는 실린더 형상의 구조물을 이루는 부분이다. 허브(100)는 원통 형상으로 이루어지며 외주면에 길이 방향으로 따라 가이드홈부(101)가 형성된다. 가이드홈부(101)는 일정한 간격으로 다수가 형성될 수 있다. 본 발명의 제1 실시예에서의 가이드홈부(101)는 허브(100)의 외측으로 돌출된 형태를 도시하여 설명하고 있으나, 허브(100)에 길이 방향을 따라 함몰되는 형태로 이루어질 수도 있다.The hub 100 is a portion forming a cylindrical structure disposed parallel to the optical axis of the main reflector. The hub 100 has a cylindrical shape and a guide groove 101 is formed on an outer circumferential surface along the longitudinal direction. A plurality of guide grooves 101 may be formed at regular intervals. In the first embodiment of the present invention, the guide groove 101 is described as protruding to the outside of the hub 100 , but it may be formed to be recessed in the hub 100 along the longitudinal direction.
주경(130)은 복수의 주경 세그먼트(primary mirror segment, 131, 133)가 서로 연결되어 구성된다. 즉, 주경 세그먼트(131, 133)는 여러 개가 서로 연결되어 주경(130)을 이룬다. 본 발명의 제1 실시예에서 주경 세그먼트(131, 133)는 예시로 6개로 이루어지는 경우를 도시하여 설명한다. 그러나 주경 세그먼트(131, 133)는 6개 이상으로 구성될 수 있고, 예를 들면 9개 또는 그 이상으로 구성되어 주경(130)을 이룰 수 있다. 이러한 주경 세그먼트(131, 133)는 그의 개수가 증가하면 주경(130)이 폴딩된 상태의 전체 직경(크기)를 더욱 작게 할 수 있다. 주경 세그먼트(131, 133)는 허브(100)의 외주면에 배치될 수 있다. 주경 세그먼트(131, 133)는 허브(100)의 외주면과 간격을 이루어 배치될 수 있다.The main mirror 130 is configured by connecting a plurality of primary mirror segments 131 and 133 to each other. That is, several main mirror segments 131 and 133 are connected to each other to form the main mirror 130 . In the first embodiment of the present invention, the main diameter segments 131 and 133 will be described by showing the case of six as an example. However, the main mirror segments 131 and 133 may be composed of six or more, for example, may be composed of nine or more to form the main mirror 130 . When the number of these main mirror segments 131 and 133 increases, the overall diameter (size) of the main mirror 130 in a folded state may be made smaller. The main diameter segments 131 and 133 may be disposed on the outer peripheral surface of the hub 100 . The main diameter segments 131 and 133 may be disposed to be spaced apart from the outer peripheral surface of the hub 100 .
주경 세그먼트(131, 133)는 서로 인접하는 측면에 홈부(131a, 133a)가 형성된다. 주경 세그먼트(131, 133)의 홈부(131a, 133a)는 주경(130)이 전개된 상태를 기준으로 할 때, 주경 세그먼트(131, 133)의 측면에 축 중심에서 방사상 방향으로 홈이 형성된다. 즉, 주경 세그먼트(131, 133)는 부채꼴 형상으로 이루어지며 서로 인접하여 마주하는 측면에 홈부(131a, 133a)가 각각 형성된다. 주경 세그먼트(131, 133)의 홈부(131a, 133a)는 주경 세그먼트(131, 133)의 가운데 부분에서 일정한 구간에 형성될 수 있다.The main diameter segments 131 and 133 have grooves 131a and 133a formed on sides adjacent to each other. The grooves 131a and 133a of the main diameter segments 131 and 133 are formed on the side surfaces of the main diameter segments 131 and 133 in a radial direction from the center of the axis based on the expanded state of the main diameter 130 . That is, the main diameter segments 131 and 133 are formed in a sectoral shape, and groove portions 131a and 133a are respectively formed on sides facing each other adjacent to each other. The grooves 131a and 133a of the main diameter segments 131 and 133 may be formed in a predetermined section in the middle of the main diameter segments 131 and 133 .
연결부(150)는 복수의 주경 세그먼트(131, 133)의 인접한 부분을 연결하는 부분이다. 이러한 연결부(150)는 힌지부재가 사용될 수 있다. The connecting portion 150 is a portion connecting adjacent portions of the plurality of main diameter segments 131 and 133 . A hinge member may be used for the connection part 150 .
연결부(150)는 이동 힌지부(151)와 고정 힌지부(161)를 포함한다.The connection part 150 includes a movable hinge part 151 and a fixed hinge part 161 .
이동 힌지부(151), 도 8에 도시한 바와 같이, 복수의 주경 세그먼트(131, 133) 중 서로 인접하는 주경 세그먼트(131, 133)를 서로 연결한다. 이동 힌지부(151)는 이동 힌지축(153), 제1 이동부(155), 제2 이동부(157) 그리고 링크 연결부(159)를 포함한다.As shown in the movable hinge part 151, the main diameter segments 131 and 133 adjacent to each other among the plurality of main diameter segments 131 and 133 are connected to each other. The movable hinge part 151 includes a movable hinge shaft 153 , a first movable part 155 , a second movable part 157 , and a link connection part 159 .
이동 힌지축(153)은 원기둥 모양으로 이루어진다. 제1 이동부(155)는 이동 힌지축(153)에 회전 가능하게 결합되며 일부가 플레이트 또는 돌출된 형상으로 이루어질 수 있다. 제1 이동부(155)는 이동 힌지축(153)에 회전 가능하게 결합되면서 주경 세그먼트(131)의 측면에 형성된 홈부(131a)를 따라 이동할 수 있다. 즉, 제1 이동부(155)는 주경 세그먼트(131)의 측면에 형성된 홈부(131a)에 삽입되어 홈부(131a)를 따라 일정한 구간을 이동할 수 있다.The movable hinge shaft 153 has a cylindrical shape. The first moving part 155 is rotatably coupled to the moving hinge shaft 153 and may be partially formed in a plate or protruding shape. The first moving part 155 may move along the groove part 131a formed on the side surface of the main diameter segment 131 while being rotatably coupled to the moving hinge shaft 153 . That is, the first moving part 155 may be inserted into the groove part 131a formed on the side surface of the main diameter segment 131 to move a predetermined section along the groove part 131a.
제2 이동부(157)는 이동 힌지축(153)에 회전 가능하게 결합되며 일부가 플레이트 또는 돌출된 형상으로 이루어질 수 있다. 제2 이동부(157)는 이동 힌지축(153)에 회전 가능하게 결합되면서 제1 이동부(155)가 끼워지는 주경 세그먼트(131)에 인접하여 배치되는 다른 주경 세그먼트(133)의 측면을 따라 이동할 수 있도록 돌출된 모양으로 이루어질 수 있다. 제2 이동부(157)는 제1 이동부(155)가 끼워진 주경 세그먼트(131)에 인접한 또 다른 주경 세그먼트(133)에 형성된 또 다른 홈부(133a)에 끼워져 일부 구간을 이동할 수 있다. 이동 힌지부(151)는 주경 세그먼트(131, 133)의 외측방향으로 이동할 수 있다.The second moving part 157 is rotatably coupled to the moving hinge shaft 153 and may be partially formed in a plate or protruding shape. The second moving part 157 is rotatably coupled to the moving hinge shaft 153 along the side of the other main diameter segment 133 disposed adjacent to the main diameter segment 131 into which the first moving part 155 is fitted. It may be formed in a protruding shape to be movable. The second moving part 157 may be fitted in another groove part 133a formed in another main diameter segment 133 adjacent to the main diameter segment 131 into which the first moving part 155 is fitted to move a partial section. The movable hinge part 151 may move in an outward direction of the main diameter segments 131 and 133 .
링크 연결부(159)는 이동 힌지축(153)에 회전 가능하게 결합되며 일부가 연장되어 돌출된 돌출부(159a)로 이루어진다. The link connection part 159 is rotatably coupled to the movable hinge shaft 153 and includes a protrusion 159a that is partially extended and protruded.
이동 힌지축(153)은 그의 사이드 측에 제1 이동부(155)와 제2 이동부(157)가 결합되고, 이동 힌지축(153)의 가운데 부분에 링크 연결부(159)가 결합될 수 있다. The movable hinge shaft 153 may have a first movable part 155 and a second movable part 157 coupled to a side thereof, and a link connection part 159 may be coupled to a central portion of the movable hinge shaft 153 . .
이러한 이동 힌지축(153)은 주경 세그먼트(131, 133)의 각각의 인접하는 위치에 각각 설치된다.These movable hinge shafts 153 are respectively installed at adjacent positions of the main diameter segments 131 and 133 .
고정 힌지부(161)는 주경 세그먼트(131, 133)들 사이에 설치될 수 있다. 즉, 고정 힌지부(161)는 이동 힌지부(151)가 설치되지 않은 다른 주경 세그먼트(131, 133)의 인접하는 부분에 설치된다. 다시 말하면, 주경 세그먼트(131, 133)는 서로 인접하는 일측에 이동 힌지부(151)가 설치되고, 서로 인접하는 타측에 고정 힌지부(161)가 설치된다.The fixed hinge part 161 may be installed between the main diameter segments 131 and 133 . That is, the fixed hinge part 161 is installed in an adjacent part of the other main diameter segments 131 and 133 where the movable hinge part 151 is not installed. In other words, the main diameter segments 131 and 133 are provided with a movable hinge part 151 on one side adjacent to each other, and a fixed hinge part 161 on the other side adjacent to each other.
고정 힌지부(161)는, 도 9에 도시한 바와 같이, 고정 힌지축(163), 제1 고정부(165), 그리고 제2 고정부(167)를 포함한다.As shown in FIG. 9 , the fixed hinge part 161 includes a fixed hinge shaft 163 , a first fixing part 165 , and a second fixing part 167 .
고정 힌지축(163)은 원기둥 모양으로 이루어질 수 있다. 제1 고정부(165)는 고정 힌지축(163)에 힌지 결합되어 플레이트 또는 돌출부 모양으로 이루어진다. 이러한 제1 고정부(165)는 이동 힌지부(151)가 설치되지 않은 주경 세그먼트(133)의 측면에 결합된다.The fixed hinge shaft 163 may have a cylindrical shape. The first fixing part 165 is hinged to the fixing hinge shaft 163 and is formed in the shape of a plate or a protrusion. The first fixing part 165 is coupled to the side of the main diameter segment 133 on which the movable hinge part 151 is not installed.
제2 고정부(167)는 고정 힌지축(163)에 힌지 결합되어 플레이트 또는 돌출부 모양으로 이루어진다. 이러한 제2 고정부(167)는 이동 힌지부(151)가 설치되지 않은 주경 세그먼트(131)의 측면에 결합된다. The second fixing part 167 is hinged to the fixing hinge shaft 163 and has a plate or protrusion shape. The second fixing part 167 is coupled to the side of the main diameter segment 131 on which the movable hinge part 151 is not installed.
상술한 이동 힌지부(151)는 주경 세그먼트(131, 133)의 반사면(131b, 133b)이 서로 마주하는 방향으로 주경 세그먼트(131, 133)를 폴딩시킬 수 있다. 그리고 상술한 고정 힌지부(161)는 주경 세그먼트(131, 133)가 상술한 이동 힌지부(151)에 의해 폴딩된 방향과 반대 방향으로 또 다른 주경 세그먼트(131, 133)를 폴딩시킬 수 있다. 즉, 고정 힌지부(161)는 주경 세그먼트(131, 133)의 반사면(131b, 133b)의 배면이 서로 마주하도록 주경 세그먼트(131, 133)를 폴딩시킬 수 있다.The above-described movable hinge unit 151 may fold the main mirror segments 131 and 133 in a direction in which the reflective surfaces 131b and 133b of the main mirror segments 131 and 133 face each other. In addition, the above-described fixed hinge part 161 may fold another main diameter segment 131 and 133 in a direction opposite to the direction in which the main diameter segments 131 and 133 are folded by the above-described movable hinge part 151 . That is, the fixing hinge part 161 may fold the main mirror segments 131 and 133 so that the rear surfaces of the reflective surfaces 131b and 133b of the main mirror segments 131 and 133 face each other.
본 발명의 제1 실시예의 다른 예시로 이동 힌지부(151)에 의해 폴딩되는 주경 세그먼트(131, 133)는 반사면(131b, 133b)의 반대로 폴딩될 수 있다. 이 경우에는 고정 힌지부(161)에 의해 폴딩되는 주경 세그먼트(131, 133)는 반사면(131b, 133b)이 서로 마주하도록 폴딩될 수 있다.As another example of the first embodiment of the present invention, the main mirror segments 131 and 133 that are folded by the movable hinge unit 151 may be folded opposite the reflective surfaces 131b and 133b. In this case, the main mirror segments 131 and 133 that are folded by the fixed hinge part 161 may be folded so that the reflective surfaces 131b and 133b face each other.
이와 같이 이동 힌지부(151)와 고정 힌지부(161)는 인접하는 주경 세그먼트(131, 133)들을 서로 반대 방향으로 폴딩하여 주경 세그먼트(131, 133)들이 완전하게 허브(100) 측으로 접힐 때 전체적인 직경을 최소화시킬 수 있다.In this way, the movable hinge part 151 and the fixed hinge part 161 fold the adjacent main diameter segments 131 and 133 in opposite directions so that when the main diameter segments 131 and 133 are completely folded toward the hub 100, the overall diameter can be minimized.
전개부(170)는 허브(100)와 이동 힌지부(151)에 결합되어 주경 세그먼트(131, 133)를 전개할 수 있다. 이러한 전개부(170)는 이동부재(171), 제1 링크(173), 그리고 제2 링크(175)를 포함한다. The deployment unit 170 may be coupled to the hub 100 and the movable hinge unit 151 to expand the main diameter segments 131 and 133 . The deployment unit 170 includes a moving member 171 , a first link 173 , and a second link 175 .
이동부재(171)는, 도 10에 도시한 바와 같이, 링(Ring) 형상으로 이루어져 허브(100)의 외주측에 배치되며 허브(100)의 길이 방향을 따라 이동할 수 있다. 이동부재(171)는 중심 방향으로 복수의 가이드 돌출부(171a)를 구비한다. 이동부재(171)의 가이드 돌출부(171a)는 허브(100)의 가이드홈부(101)에 삽입되어 허브(100)의 길이 방향을 따라 이동한다. 본 발명의 제1 실시예의 전개부(170)의 이동부재(171)는 주경(130)의 반사면(131b, 133b)의 배면측인 허브(100)에 배치되는 것이 바람직하다.As shown in FIG. 10 , the movable member 171 has a ring shape, is disposed on the outer periphery of the hub 100 , and can move along the longitudinal direction of the hub 100 . The moving member 171 includes a plurality of guide protrusions 171a in a central direction. The guide protrusion 171a of the moving member 171 is inserted into the guide groove 101 of the hub 100 and moves along the longitudinal direction of the hub 100 . The moving member 171 of the deployment part 170 of the first embodiment of the present invention is preferably disposed on the hub 100 on the rear side of the reflective surfaces 131b and 133b of the main mirror 130 .
제1 링크(173)는 이동부재(171)에 일측이 힌지결합된다. 그리고 제1 링크(173)는 타측이 제2 링크(175)의 중간부에 힌지 결합된다. 따라서 이동부재(171)가 허브(100)의 축과 나란한 방향을 따라 이동할 때 이동부재(171) 에 힌지 결합된 제1 링크(173)가 함께 이동할 수 있다.One side of the first link 173 is hinged to the moving member 171 . And the other side of the first link 173 is hinged to the middle portion of the second link 175 . Accordingly, when the moving member 171 moves in a direction parallel to the axis of the hub 100 , the first link 173 hinged to the moving member 171 may move together.
제2 링크(175)는 허브(100)의 중간부에 힌지결합된다. 이때 제2 링크(175)는 허브(100)에 직접 힌지 결합되거나 또는 별도의 부재를 허브(100)에 고정하고 이 부재에 힌지결합되는 것도 가능하다. 즉, 제2 링크(175)는 허브(100) 또는 허브(100) 측에 힌지 결합된 부분이 고정된다. 제2 링크(175)는 타측이 상술한 이동 힌지부(151)의 링크 연결부(159)에 힌지 결합된다(도 8 참조). The second link 175 is hinged to the middle portion of the hub 100 . In this case, the second link 175 may be directly hinged to the hub 100 or a separate member may be fixed to the hub 100 and hinged to the hub 100 . That is, the second link 175 is fixed to the hub 100 or a portion hinged to the hub 100 side. The second link 175 is hinge-coupled to the link connection part 159 of the movable hinge part 151 on the other side (refer to FIG. 8).
한편, 전개부(170)는 주경 세그먼트(131, 133)가 펼쳐지는 방향으로 제1 링크(173)와 제2 링크(175)가 이동되도록 탄성력이 작용하는 탄성부재(177)를 포함한다. 탄성부재(177)는 제1 링크(173)와 제2 링크(175) 또는 제1 링크(173)와 허브(100) 사이에 설치될 수 있다(도 6 참조). 이러한 경우 인장코일 스프링이 설치될 수 있다. 본 발명의 제1 실시예에서 탄성부재(177)는 예시로 설명하는 것이며, 주경 세그먼트(131, 133)가 전개되는 방향으로 제1 링크(173)와 제2 링크(175)가 움직이는 탄성력을 가지는 것이면 설치위치나 탄성 방향에 제한되지 않는다. On the other hand, the deployment part 170 includes an elastic member 177 to which an elastic force acts so that the first link 173 and the second link 175 are moved in the direction in which the main diameter segments 131 and 133 are unfolded. The elastic member 177 may be installed between the first link 173 and the second link 175 or the first link 173 and the hub 100 (see FIG. 6 ). In this case, a tension coil spring may be installed. In the first embodiment of the present invention, the elastic member 177 is described as an example, and the first link 173 and the second link 175 in the direction in which the main diameter segments 131 and 133 are deployed have an elastic force. If it is, it is not limited to the installation position or the elastic direction.
본 발명의 제1 실시예의 전개부(170)는 주경 세그먼트(131)가 전개되도록 트리거 역할을 하는 작동부(179)를 포함한다.The deployment part 170 of the first embodiment of the present invention includes an operation part 179 serving as a trigger so that the main diameter segment 131 is deployed.
작동부(179)는 허브(100)에 설치되어 상술한 이동부재(171)의 이동을 제한하는 상태로 설치된다. 이러한 작동부(179)는 제어부에 의해 제어되는 솔레노이드 작동기 등으로 이루어질 수 있다. 이러한 작동부(179)는 단지 이동부재(171)를 초기에 고정된 상태로 유지할 수 있으며, 필요시 또는 제어시에 이동부재(171)의 고정된 상태를 해제할 수 있는 기능을 가지는 장치이면 어느 것이나 적용될 수 있다.The operation unit 179 is installed in the hub 100 to limit the movement of the above-described moving member 171 . The operation unit 179 may be formed of a solenoid actuator controlled by a control unit. This operation unit 179 can only maintain the moving member 171 in a fixed state initially, and any device having a function to release the fixed state of the moving member 171 when necessary or controlled. either can be applied.
이와 같이 이루어지는 본 발명의 제1 실시예의 작동 과정을 설명하면 다음과 같다.The operation process of the first embodiment of the present invention made in this way will be described as follows.
주경 세그먼트(131, 133)들이 허브(100)에 접힌 상태(도 1, 도 2 및 도 6 참조)에서 제어부에 의해 작동부(179)가 구동된다. 그러면 작동부(179)가 작동하여 이동부재(171)의 위치를 고정하고 있는 상태를 해제시킨다. 이때 탄성부재(177)는 탄성력에 의해 이동부재(171)를 축 방향으로 이동시킨다. 그러면 이동부재(171)의 가이드 돌출부(171a)가 허브(100)의 가이드홈부(101)를 따라 이동한다. In a state in which the main diameter segments 131 and 133 are folded to the hub 100 (see FIGS. 1, 2 and 6 ), the operation unit 179 is driven by the control unit. Then, the operation unit 179 operates to release the state in which the position of the moving member 171 is fixed. At this time, the elastic member 177 moves the movable member 171 in the axial direction by the elastic force. Then, the guide protrusion 171a of the moving member 171 moves along the guide groove 101 of the hub 100 .
이동부재(171)가 이동함에 따라 제1 링크(173)는 제2 링크(175)의 중간부를 가압한다. 그러면 제2 링크(175)는 주경 세그먼트(131, 133)들이 펼쳐지는 방향으로 이동한다. 이때 제2 링크(175)는 이동 힌지부(151)의 링크 연결부(159)를 이동시킨다. 그러면 이동 힌지부(151)의 제1 이동부(155)와 제2 이동부(157)가 주경 세그먼트(131, 133)의 홈부(131a, 133a)를 따라 방사상 방향(외측 방향)으로 안내되어 이동한다. 따라서 도 4에 도시한 바와 같이, 복수의 주경 세그먼트(131, 133)가 전개된다. As the moving member 171 moves, the first link 173 presses the middle portion of the second link 175 . Then, the second link 175 moves in the direction in which the main diameter segments 131 and 133 are unfolded. At this time, the second link 175 moves the link connection part 159 of the movable hinge part 151 . Then, the first moving part 155 and the second moving part 157 of the movable hinge part 151 are guided and moved in the radial direction (outward direction) along the grooves 131a and 133a of the main diameter segments 131 and 133 . do. Accordingly, as shown in FIG. 4 , a plurality of main diameter segments 131 and 133 are developed.
이러한 본 발명의 제1 실시예는 복수의 주경 세그먼트(131, 133)가 폴딩된 상태에서 비교적 작은 직경(h1, 도 2 참조)을 가진다. 그리고 복수의 주경 세그먼트(131, 133)가 전개된 상태에서 큰 직경의 크기(h2, 도 5 참조)를 가진다. 본 발명의 제1 실시예에서 주경 세그먼트(131, 133)의 개수를 늘리면 주경 세그먼트(131, 133)들이 폴딩된 상태의 직경(h1)을 더욱 작게 할 수 있다.This first embodiment of the present invention has a relatively small diameter (h1, see FIG. 2) in a state in which the plurality of main diameter segments 131 and 133 are folded. In addition, the plurality of main diameter segments 131 and 133 have a large diameter (h2, see FIG. 5 ) in the deployed state. In the first embodiment of the present invention, if the number of the main diameter segments 131 and 133 is increased, the diameter h1 in a state in which the main diameter segments 131 and 133 are folded can be made smaller.
본 발명의 제1 실시예는 주경 세그먼트(131, 133)가 전개된 상태에서 반사면이 전체적으로 연결된 주경(130)를 이룰 수 있다. 따라서 주경(130)을 구성하는 주경 세그먼트(131, 133) 사이에 빈 공간이 생기는 것을 방지하여 집광력 및 결상력을 향상시킬 수 있다.In the first embodiment of the present invention, in the state in which the main mirror segments 131 and 133 are deployed, the reflective surfaces may form the main mirror 130 connected as a whole. Accordingly, it is possible to prevent an empty space from being formed between the main mirror segments 131 and 133 constituting the main mirror 130 , thereby improving light collecting power and imaging power.
본 발명의 제1 실시예는 주경(130)을 전개하기 위한 전개부(170)를 허브(100)의 외주측에 설치하여 주경(130)의 반사면 반대 방향 측에 공간을 줄여 인성위성의 소형화 및 나노위성을 실현할 수 있다.The first embodiment of the present invention is to reduce the space on the opposite side of the reflective surface of the main mirror 130 by installing the deployment part 170 for deploying the main mirror 130 on the outer peripheral side of the hub 100 to reduce the size of the satellite and Nanosatellites can be realized.
도 11은 본 발명의 제2 실시예를 설명하기 위해 전개형 미러 어셈블리가 접힌 상태를 도시한 도면이고, 도 12는 본 발명의 제2 실시예의 전개형 미러 어셈블리가 전개되는 과정을 도시한 도면이며, 도 13은 본 발명의 제2 실시예의 전개형 미러 어셈블리가 전개된 상태를 도시한 도면이다.11 is a view showing a state in which the deployable mirror assembly is folded in order to explain a second embodiment of the present invention, and FIG. 12 is a view showing a process in which the deployable mirror assembly according to the second embodiment of the present invention is deployed. , FIG. 13 is a view showing a deployed state in which the deployable mirror assembly according to the second embodiment of the present invention is deployed.
본 발명의 제2 실시예는 상술한 제1 실시예와 비교하여 다른 점 만을 설명하고 동일한 부분은 동일한 부호를 부여하여 상술한 제1 실시예의 설명으로 대치하기로 한다.In the second embodiment of the present invention, compared with the above-described first embodiment, only differences will be described, and the same parts are given the same reference numerals and replaced with the description of the above-described first embodiment.
본 발명의 제1 실시예는 이동부재(171)가 허브(100)의 후단부에서 설치되어 허브(100)의 길이 방향을 따라 이동하는 구조를 설명하였다. 그러나 본 발명의 제2 실시예는 이동부재(171)가 허브(100)의 중간부에 설치되어 허브(100)의 길이 방향을 따라 후단부 측으로 이동할 수 있는 구조이다. 이러한 본 발명의 제2 실시예는 이동부재(171)가 다른 부품에 간섭을 받을 경우 설계 자유도를 높일 수 있으며, 또한, 주경(130)이 폴딩된 상태에서 직경(h1)을 더욱 줄이는 방향으로 설계할 수 있다. 이러한 본 발명의 제2 실시예는 본 발명을 다양하게 실시할 수 있으며 소형화를 위해 최적화할 수 있도록 설계의 자유도를 높일 수 있다.The first embodiment of the present invention has described a structure in which the moving member 171 is installed at the rear end of the hub 100 and moves along the longitudinal direction of the hub 100 . However, according to the second embodiment of the present invention, the moving member 171 is installed in the middle portion of the hub 100 to move toward the rear end in the longitudinal direction of the hub 100 . This second embodiment of the present invention can increase the degree of freedom in design when the moving member 171 is interfered with by other parts, and is designed in a direction to further reduce the diameter h1 in the state where the main diameter 130 is folded. can do. The second embodiment of the present invention can implement the present invention in various ways and can increase the degree of freedom in design so as to be optimized for miniaturization.
본 발명의 제2 실시예는 제1 실시예와 같은 작동부(179)가 이동부재(171)를 지지하고 탄성부재(177)가 설치되는 것으로 가정한다. 주경 세그먼트(131, 133)들이 허브(100)에 접힌 상태(도 11 참조)에서 이동부재(171)가 탄성부재(177)의 탄성력에 의해 허브(100)의 길이 방향을 따라 이동한다. 이때 이동부재(171)는 허브(100)의 가운데 부분에서 허브(100)의 후단부측(주경의 반사면 반대 방향)으로 이동한다. 그러면 제1 링크(173)는 제2 링크(175)의 중간부를 가압한다. 그리고 제2 링크(175)는 주경 세그먼트(131, 133)들이 펼쳐지는 방향으로 이동한다. 이때 제2 링크(175)는 이동 힌지부(151)의 링크 연결부(159)를 이동시킨다. 그러면 이동 힌지부(151)의 제1 이동부(155)와 제2 이동부(157)가 주경 세그먼트(131, 133)의 홈부(131a, 133a)를 따라 방사상 방향(외측 방향)으로 안내되어 이동한다. 따라서 도 13에 도시한 바와 같이, 복수의 주경 세그먼트(131, 133)가 전개된다. In the second embodiment of the present invention, it is assumed that the operation unit 179 supports the moving member 171 and the elastic member 177 is installed as in the first embodiment. In a state in which the main diameter segments 131 and 133 are folded in the hub 100 (refer to FIG. 11 ), the moving member 171 moves along the longitudinal direction of the hub 100 by the elastic force of the elastic member 177 . At this time, the moving member 171 moves from the center of the hub 100 to the rear end of the hub 100 (in the direction opposite to the reflective surface of the main mirror). Then, the first link 173 presses the middle portion of the second link 175 . And the second link 175 moves in the direction in which the main diameter segments 131 and 133 are unfolded. At this time, the second link 175 moves the link connection part 159 of the movable hinge part 151 . Then, the first moving part 155 and the second moving part 157 of the movable hinge part 151 are guided and moved in the radial direction (outward direction) along the grooves 131a and 133a of the main diameter segments 131 and 133 . do. Accordingly, as shown in FIG. 13 , a plurality of main diameter segments 131 and 133 are developed.
이러한 본 발명의 제2 실시예는 전개된 상태의 주경(130)이 허브(100)의 후단부측(주경의 반사면 반대측)에 배치된다. 즉, 본 발명의 제1 실시예는 전개된 상태의 주경(103)이 허브(100)의 중간부에 배치되지만, 제2 실시예는 허브(100)의 후단부의 끝 부분의 외주에 배치된다. 즉, 본 발명의 제2 실시예는 다른 부품과 간섭을 방지하거나 또는 반사 효율을 극대화시키는 방향으로 설계를 고려할 수 있어 설계 자유도를 높일 수 있다.In this second embodiment of the present invention, the main mirror 130 in the deployed state is disposed on the rear end side of the hub 100 (the opposite side of the reflection surface of the main mirror). That is, in the first embodiment of the present invention, the main mirror 103 in the deployed state is disposed in the middle portion of the hub 100 , but in the second embodiment, it is disposed on the outer periphery of the end portion of the rear end of the hub 100 . That is, in the second embodiment of the present invention, design freedom can be increased by preventing interference with other components or maximizing reflection efficiency.
이상을 통해 본 발명의 바람직한 실시예에 대하여 설명하였지만, 본 발명은 이에 한정되는 것이 아니고 청구범위와 발명의 상세한 설명 및 첨부한 도면의 범위 안에서 여러 가지로 변형하여 실시하는 것이 가능하고 이 또한 본 발명의 범위에 속하는 것은 당연하다.Although preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and variations are possible within the scope of the claims, the detailed description of the invention, and the accompanying drawings. It is natural to fall within the scope of

Claims (9)

  1. 허브,Herb,
    상기 허브의 외측에 배치되는 복수의 주경 세그먼트,a plurality of major diameter segments disposed outside the hub;
    복수의 상기 주경 세그먼트를 서로 연결하는 연결부, 그리고a connecting portion connecting a plurality of the main diameter segments to each other; and
    상기 허브와 상기 연결부 사이에 배치되어 복수의 상기 주경 세그먼트를 펼치는 전개부a deployment part disposed between the hub and the connecting part to expand a plurality of the main diameter segments
    를 포함하는 전개형 미러 어셈블리.A deployable mirror assembly comprising a.
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 연결부는the connection part
    복수의 상기 주경 세그먼트의 인접한 부분을 연결하는 힌지부재로 이루어지는 전개형 미러 어셈블리.A deployable mirror assembly comprising a hinge member connecting adjacent portions of the plurality of main mirror segments.
  3. 청구항 1에 있어서,The method according to claim 1,
    상기 연결부는the connection part
    복수의 상기 주경 세그먼트 중 서로 인접하는 주경 세그먼트를 연결하며, 상기 주경 세그먼트의 외측 방향으로 이동하고 상기 전개부가 결합되는 이동 힌지부A movable hinge unit that connects adjacent main segment segments among the plurality of main segment segments, moves outward of the main segment segment, and is coupled to the development unit
    를 포함하는 전개형 미러 어셈블리.A deployable mirror assembly comprising a.
  4. 청구항 3에 있어서,4. The method according to claim 3,
    상기 이동 힌지부는The movable hinge part
    상기 주경 세그먼트의 측면부에 배치되는 전개형 미러 어셈블리.A deployable mirror assembly disposed on a side portion of the main mirror segment.
  5. 청구항 1에 있어서,The method according to claim 1,
    상기 연결부는 the connection part
    복수의 상기 주경 세그먼트 중 서로 인접하는 주경 세그먼트를 연결하는 고정 힌지부A fixed hinge part connecting adjacent main diameter segments among the plurality of main diameter segments
    를 포함하는 전개형 미러 어셈블리.A deployable mirror assembly comprising a.
  6. 청구항 1에 있어서,The method according to claim 1,
    상기 전개부는The development part
    상기 허브의 길이 방향을 따라 이동하는 이동부재,a moving member moving along the longitudinal direction of the hub;
    상기 이동부재에 일단이 힌지 결합되는 제1 링크,a first link having one end hinge-coupled to the movable member;
    상기 허브에 일단 힌지 결합되고 타단이 상기 연결부에 힌지 결합되는 제2 링크를 포함하고,and a second link having one end hinged to the hub and the other end hinged to the connection part,
    상기 제1 링크의 타단이 상기 제2 링크의 중간부에 힌지 결합되는 전개형 미러 어셈블리.A deployable mirror assembly in which the other end of the first link is hinged to a middle part of the second link.
  7. 청구항 6에 있어서,7. The method of claim 6,
    상기 전개부는The development part
    상기 주경 세그먼트가 펼쳐지는 방향으로 상기 제2 링크를 이동시키는 탄성부재를 포함하고,and an elastic member for moving the second link in a direction in which the main diameter segment is unfolded,
    상기 탄성부재는The elastic member
    상기 제1 링크와 상기 제2 링크 또는 상기 허브의 사이에 배치되는 전개형 미러 어셈블리.A deployable mirror assembly disposed between the first link and the second link or the hub.
  8. 청구항 1에 있어서,The method according to claim 1,
    상기 전개부는The development part
    상기 허브에 설치되며 제어부에 의해 제어되어 상기 주경 세그먼트가 전개되도록 상기 전개부를 작동시키는 작동부An operation part installed on the hub and controlled by a control unit to operate the deployment part so that the main diameter segment is deployed
    를 포함하는 전개형 미러 어셈블리.A deployable mirror assembly comprising a.
  9. 청구항 6에 있어서,7. The method of claim 6,
    상기 이동부재는The moving member
    원형의 띠 형상으로 이루어지고,It is made in the shape of a circular band,
    중심 방향으로 연장되는 가이드 돌출부를 구비하고,and a guide protrusion extending in the central direction,
    상기 허브는the hub is
    외주측에 길이 방향을 따라 형성되며 상기 가이드 돌출부를 안내하는 가이드 홈부를 구비한 전개형 미러 어셈블리.A deployable mirror assembly formed along the longitudinal direction on the outer periphery and having a guide groove for guiding the guide protrusion.
PCT/KR2021/006179 2020-05-20 2021-05-18 Deployment-type mirror assembly WO2021235810A1 (en)

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