KR101868768B1 - Antenna folding device, antenna expanding device and system including the same - Google Patents

Abstract

An antenna folding apparatus according to an embodiment includes a pedestal supported on a ground; A first connector fixed to the upper side of the pedestal and having a plurality of first connection holes recessed from the side along a hollow and radially spaced intervals depressed from above; A removable vertical rod inserted into the hollow of the first connector perpendicularly to the ground; A second connector having a plurality of second connection holes which are vertically movable in a state of being penetrated by the vertical bar and which are recessed from the side surface at radially constant intervals; And a plurality of connection rods which are connected between the plurality of first connection holes and the second connection holes and which are formed by bending or expanding two-section links as the distance between the first connector and the second connector is adjusted can do.

Description

TECHNICAL FIELD [0001] The present invention relates to an antenna folding device, an antenna expanding device, and a system including the antenna folding device and the antenna expanding device.

The following description relates to an antenna folding device, an antenna deployment device and a system including them.

The shape memory polymer is a smart material that behaves like a shape that changes from a permanent shape to a temporary shape and is restored to its original shape when it receives an external stimulus (temperature change, light irradiation, etc.).

The shape memory polymer is a material that reacts to temperature changes. After changing from transitional temperature to temporary shape, the shape is fixed temporarily by cooling below the transition temperature, and if the temperature is heated above the transition temperature again, The shape memory effect is restored to the permanent shape.

These shape memory smart materials are being studied for applicability in recent aerospace field due to various advantages. One of the greatest advantages of shape memory smart materials is that there is no need for a separate power system for transforming into a required shape in space and the weight saving effect compared to existing materials.

In general, the space structures including the antenna are small in size and light in weight, so that they can maximize efficiency in launching. Therefore, they must be made of a minimum number of parts capable of functioning as a space structure, Should be small. In conclusion, aerospace antennas are deployed in a collapsed state and perform the task of unfolding in space.

Conventional aerospace type antennas have a reflector made of metal, a part for fixing the folded antenna, and a power for releasing the fixing device and expanding the antenna, so a separate power supply system is added, There is a disadvantage in that efficiency is inferior in cost.

In order to solve this problem, the shape memory polymer antenna reflector has been studied. However, the antenna folding device of the reflector to assist the minimum space utilization inside the space launcher and the support member for ensuring the efficient reflection performance at the development It is in the process of blocking application.
In this connection, Korean Patent Registration No. 10-1713306 (Feb. 19, 2013) describes a variable antenna for a space structure.

The background art described above is possessed or acquired by the inventor in the derivation process of the present invention, and can not be said to be a known art disclosed in general public before application of the present invention.

It is an object of one embodiment to provide an antenna folding device, an antenna deployment device and a system including them.

An antenna folding apparatus according to an embodiment includes a pedestal supported on a ground; A first connector fixed to the upper side of the pedestal and having a plurality of first connection holes recessed from the side along a hollow and radially spaced intervals depressed from above; A removable vertical rod inserted into the hollow of the first connector perpendicularly to the ground; A second connector having a plurality of second connection holes which are vertically movable in a state of being penetrated by the vertical bar and which are recessed from the side surface at radially constant intervals; And a plurality of connection rods which are connected between the plurality of first connection holes and the second connection holes and which are formed by bending or expanding two-section links as the distance between the first connector and the second connector is adjusted can do.

The antenna folding device according to an embodiment may further include a fixing plate penetrating by the vertical bar and capable of fixing the shape memory polymer antenna.

The connecting rod includes: an upper rod rotatably connected to the second connector; And the upper end portion may be rotatably connected to the lower end portion of the upper rod, and the lower end portion may include a lower rod rotatably connected to the first connector.

The connection rod may be detachably connected to the first connection hole and the second connection hole, respectively.

According to an embodiment of the present invention, there is provided an antenna expansion device comprising: a pedestal supported on a ground; A plurality of rotatable supports mounted radially on the pedestal; And a rotary arm which is installed to be rotatable in the up-and-down direction with respect to the rotary support and supports the shape memory polymer antenna.

The rotary arm can be rotated only in the downward direction when the shape memory polymer antenna is deployed.

The rotary support may include a ratchet formed at an end portion connected to the rotary arm, the rotary arm having a pawl rotatably installed at an end portion connected to the rotary support, and engaging with the ratchet; And a spring that is supported from one side of the rotation support portion and connected to one side of the pawl to apply a rotation moment to the pawl in one direction, and the rotation of the rotary arm in the upward direction Can be prevented.

The rotary arm may further include a pin protruding from one side of the pole in a direction in which the spring is connected, and by pulling the pin, engagement of the ratchet and the pole may be released.

An antenna folding and deployment system according to an exemplary embodiment includes an antenna deployment device; And a folding module assembled with the antenna expanding device to perform folding of the shape memory polymer antenna, and the folding module can be removably attached to the antenna expanding device.

The pedestal may include an insertion hole formed on an upper surface thereof so as to be recessed in a direction perpendicular to the paper surface, the folding module including: a vertical rod inserted in the insertion hole perpendicularly to the paper surface; A connector having a plurality of connection holes which are vertically movable in a state of being pierced by the vertical bar and which are recessed from a side surface at regular intervals in a radial direction; And a connecting rod having one end rotatably attached to the protruding end of the rotary arm and the other end rotatably connected to the connecting hole.

An antenna folding and deployment test system according to one embodiment includes a chamber having an interior space; An antenna folding device disposed in the chamber; An antenna deployment device disposed within the chamber; And a heating / cooling device disposed in the chamber for cooling the shape memory polymer antenna folded by the antenna folding device or for heating the folded shape memory polymer antenna disposed in the antenna expansion device.

According to the antenna folding apparatus according to one embodiment, the shape memory polymer antenna can be folded in a radially symmetrical shape.

According to the antenna expansion device according to the embodiment, the shape memory polymer antenna can be guided along the direction in which the shape memory polymer antenna is developed without any separate power device, and it is possible to prevent the shape memory polymer antenna from going in the opposite direction.

According to the test chamber according to the embodiment, the folding and developing process of the shape memory polymer antenna can be tested through the antenna folding device and the antenna expanding device.

According to the folding and antenna expanding apparatus of one embodiment, folding and expansion of the shape memory polymer antenna can be performed in one configuration.

1 is a perspective view of an antenna folding apparatus according to an embodiment.
2 is an exploded perspective view of an antenna folding apparatus according to an embodiment.
3 is an exploded perspective view of an antenna folding apparatus according to an embodiment.
4 is a view illustrating a process of folding a shape memory polymer antenna through an antenna folding apparatus according to an embodiment.
5 is a view illustrating a process of folding a shape memory polymer antenna through an antenna folding apparatus according to an embodiment.
6 is a perspective view of an antenna expansion device according to an embodiment.
7 is an enlarged view of an antenna expansion device according to an embodiment
8 is an enlarged view of an antenna expansion device according to an embodiment
9 is a view showing a shape memory polymer antenna developed through an antenna expansion device according to an embodiment.
10 is a view showing a shape memory polymer antenna developed through an antenna expansion device according to an embodiment.
11 is a perspective view illustrating an antenna folding and deployment system in accordance with one embodiment.
12 is an exploded perspective view of an antenna folding and deployment system according to one embodiment.
FIG. 13 is a view illustrating a process of folding a shape memory polymer antenna in an antenna folding and deployment test system according to an embodiment and fixing a shape by cooling the heating / cooling device.
FIG. 14 is a diagram illustrating a process of self-expanding a shape memory polymer antenna through heat generation of a heating / cooling device in an antenna folding and deployment test system according to an embodiment.

Hereinafter, embodiments will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments, detailed description of known functions and configurations incorporated herein will be omitted when it may make the best of an understanding clear.

In describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

The components included in any one embodiment and the components including common functions will be described using the same names in other embodiments. Unless otherwise stated, the description of any one embodiment may be applied to other embodiments, and a detailed description thereof will be omitted in the overlapping scope.

FIG. 1 is a perspective view of an antenna folding apparatus according to an embodiment, FIG. 2 is an exploded perspective view of an antenna folding apparatus according to an embodiment, and FIG. 3 is an exploded perspective view of an antenna folding apparatus according to an embodiment.

Referring to FIGS. 1 to 3, the antenna folding device 11 according to an embodiment may receive the shape memory polymer antenna 4 and fold it so as to have a predetermined shape in a radial direction.

The shape memory polymer antenna 4 is an antenna that can change shape from a permanent shape to a temporary shape to maintain its shape and recover to its original permanent shape upon receiving an external stimulus (temperature change, light irradiation, etc.). For example, the shape memory polymer antenna 4 may have a thin disk-like shape, and a hole may be formed in a central portion thereof.

The antenna folding apparatus 11 may include a pedestal 111, a first connector 112, a vertical rod 113, a fixing plate 116, a second connector 114, and a connecting rod 115.

The pedestal 111 may be a member protruding in the vertical direction from the ground and supported on the ground. For example, the top surface of the pedestal may be formed horizontally with the ground.

For example, the pedestal 111 may include an insertion hole 1111. The insertion hole 1111 may be a hole recessed in a direction perpendicular to the upper side of the insertion hole. For example, the insertion hole 1111 may be formed at the center of the pedestal 111, and a vertical rod 113 to be described later may be inserted into the insertion hole 1111.

The first connector 112 may be a hollow member that can be fixed to the upper side of the pedestal 111. For example, the first connector 112 can be fixed to the central portion of the upper surface of the pedestal 111, so that the hollow of the first connector 112 can communicate with the insertion hole 1111.

For example, the first connector 112 may include a plurality of first connection holes 1121. For example, a lower end portion of a connection rod 115 to be described later may be detachably connected to the plurality of first connection holes 1121.

The plurality of first connection holes 1121 may be a hole formed by being recessed from the side surface at a radially constant interval. For example, the first connection hole 1121 may be formed in accordance with the number of connection rods 115 installed. For example, the first connection holes 1121 may be formed as four as shown in FIGS. 1 to 3, depending on the number of connection rods 115.

The vertical bar 113 may be a long elongated cylindrical member. For example, the vertical bar 113 can be inserted into the hollow of the first connector 112 and the insertion hole 1111 perpendicularly to the ground.

For example, the shape memory polymer antenna 4 may be arranged so that the hollow of the first connector 112 overlaps with the hole of the shape memory polymer antenna 4 on the first connector 112, 113 can be inserted into the first connector 112 and the pedestal 111 so that the shape memory polymer antenna 4 can be fixed in the horizontal direction with respect to the vertical bar 113.

The fixed plate 116 is disposed in a section of the vertical rod 113 and contacts the shape memory polymer antenna 4 disposed on the upper side of the first connector 112 to connect the shape memory polymer antenna 4 to the vertical Direction. For example, the fastening plate 116 may be hollow and move along the vertical bar 113.

The second connector 114 may be a hollow member that passes through the vertical bar 113 and can move in the vertical direction. For example, the second connector 114 may have the same configuration as the first connector 112.

For example, the second connector 114 may include a plurality of second connection holes 1141.

For example, the plurality of second connection holes 1141 may be radially spaced apart from the side by a predetermined distance. For example, the second connection holes 1141 may be four as shown in Figs.

For example, the intervals in which the plurality of first connection holes 1121 and the second connection holes 1141 are arranged and the positions in the horizontal direction may be the same.

The first connector 112 and the second connector 114 can be rotatably and detachably connected between the connection rod 115, the plurality of first connection holes 1121 and the second connection holes 1141, Can be formed as a two-link link which is bent or spread as the distance of the link is adjusted.

For example, the first connection hole 1121, the second connection hole 1141, and the connection rod 115 may be formed as four as shown in FIGS. 1 to 3, but the shape memory polymer antenna 4 may be formed radially But any number may be used as long as it is configured to reduce the volume by folding in a symmetrical shape.

For example, the connection rod 115 may include an upper rod 1152 and a lower rod 1151.

The upper rod 1152 is rotatably connected to the second connection hole 1141 of the second connector 114 and the lower end of the rod 1152 is rotatably connected to the lower rod 1151, Lt; / RTI >

For example, the upper rod 1152 may include an upper joint portion 1154 that can be detachably inserted into the second connection hole 1141.

The upper joint part 1154 may be a hinge coupling part provided at the upper end of the upper rod 1152. [ For example, the rotational direction of the upper joint part 1154 may be a direction in which the vertical rod 113 is bent or unfolded.

For example, at one end of the upper joint part 1154, a protrusion such as a pin or wedge that can be inserted and fitted into the second connection hole 1141 is formed, or a screw for screw connection between the second connection hole 1141 Shaped protrusion can be formed.

The lower rod 1151 has an upper end rotatably connected to the upper rod 1152 and a lower end rotatably connected to the first connection hole 1121 of the first connector 112, Can

For example, the connection between the upper rod 1152 and the lower rod 1151 may be composed of a central joint 1155 formed by a hinge coupling. For example, the direction of rotation of the central joint 1155 may be a direction of bending or stretching in a state of facing the vertical bar.

For example, the lower rod 1151 may include a lower joint portion 1153 that can be detachably inserted into the first connection hole 1121.

The lower joint part 1153 may be a hinge coupling part provided at the lower end of the lower rod 1151. For example, the rotational direction of the lower joint part 1153 may be a direction of bending or stretching in a state of facing the vertical bar.

For example, one end of the lower joint part 1153 may be formed with a pin, a wedge or a screw-shaped protrusion which can be inserted and fastened to the second connection hole 1141. [

According to the first connector 112, the second connector 114 and the connecting rod 115, as the second connector 114 moves in the vertical direction along the vertical bar 113, a plurality of connecting rods 115 May be bent or flattened in a direction facing the vertical bar 113.

For example, the vertical bar 113, the second connector 114, and the connecting rod 115 may be separated from the first connector 112, as shown in FIG. For example, the connection rod 115 may be separated from the first connector 112 and the second connector 114, respectively.

3, the shape memory polymer antenna 4 may be mounted while the vertical rod 113, the second connector 114, and the connection rod 115 are separated from each other. On the other hand, the shape memory polymer antenna 4 may be mounted in a state in which at least one connection rod 115 of the plurality of connection rods 115 is removed.

Referring to FIGS. 4 and 5, the process of folding the shape memory polymer antenna 4 through the antenna expansion device 12 of the embodiment can be confirmed.

4, the second connector 114 can be moved downward along the vertical bar 113 to form a space for accommodating the disk-shaped shape memory polymer antenna 4, and accordingly, A plurality of connection rods 115 may be rotated so as to bend inward. In other words, each of the lower rods 1551 can be rotated so as to be in a horizontal direction with respect to the ground.

Thereafter, the disk-shaped shape memory polymer antenna 4 is disposed on the upper side of the first connector 112 and penetrated by the vertical bar 113, and can be fixed by the fixing plate 116, The edge of the antenna 4 can be supported by the lower rod 1151 of the connecting rod 115.

5, when the second connector 114 is moved upward along the vertical bar 113, the plurality of connecting rods 115 can be rotated in a direction in which the connecting rods 115 are bent in the upward direction have.

Particularly, a portion of the shape memory polymer antenna 4, which rotates so that the lower rod 1151 supporting the disk-shaped shape memory polymer antenna 4 is oriented in the direction perpendicular to the paper surface, and is supported by the lower rod 1151, So that the shape memory polymer antenna 4 can form an upwardly folded shape of a radially uniformly spaced edge portion.

FIG. 6 is a perspective view of an antenna expansion apparatus according to an embodiment, FIG. 7 is an enlarged view of an antenna expansion apparatus according to an embodiment, and FIG. 8 is an enlarged view of an antenna expansion apparatus according to an embodiment.

6 to 8, the antenna expansion device 12 according to the embodiment guides the behavior of the shape memory polymer antenna 4 folded in the antenna folding device to restore the original disk shape by the external heat source .

For example, the antenna deployment device 12 may include a pedestal 121, a rotary support 122, and a rotary arm 123.

The pedestal 121 may be a member that protrudes in a direction perpendicular to the paper surface and is supported on the paper. The pedestal 121 can support the shape memory polymer antenna 4 on the upper side.

 For example, the top surface of the pedestal 121 may be formed horizontally with the ground.

The rotary support portion 122 can protrude from the side rotor spaced apart at radially constant intervals of the pedestal 121. [ A rotary arm 123, which will be described later, is rotatably mounted on the rotary support portion 122 and can rotate in the vertical direction.

For example, the number of the rotation support portions 122 may be four as shown in FIG. 6, but may be set to any number in accordance with the radial shape of the shape memory polymer antenna 4, .

For example, the protruding end of the rotatable support portion 122 may include a ratchet 1221 having a toothed gear shape.

The ratchet 1221 may be formed to face the outward direction of the pedestal 121. For example, the shape of the tooth of each ratchet 1221 may be configured to deflect in one direction, for example, as shown in FIG. 8, when the ratchet 1221 is viewed from the front, And may be deflected.

The rotary arm 123 can be rotatably connected to the respective rotary support portions 122 so as to be rotatable to support the shape memory polymer antenna 4, can do. For example, the rotary arm 123 may be hingedly connected at the projected distal end of the rotary support 122.

For example, the rotary arm 123 may include a pawl 1223, a step 1231, a spring 1232, and a pin 1234. [

The pawl 1223 may be a member that is rotatably installed at an end portion connected to the rotation support portion 122 and engages with the ratchet 1221. [ For example, one end of the pawl 1223 may be formed in a wedge shape that is rotatably installed near the end of the rotary arm 123 to engage with the ratchet 1221, and the other end of the pawl 1223 may be formed as a single end And may have a bar shape elongated from the base.

For example, the wedge shape of the pawl 1223 may be formed in a direction opposite to the direction in which the teeth of the ratchet 1221 are deflected, so that the pawl 1223 is mated with the biased shape of the ratchet 1221 It can be bitten.

The stepped portion 1231 may protrude from the side near the end of the rotary arm 123. [ For example, the stepped portion 1231 may have a hole formed in the same direction as the longitudinal direction of the rotary arm 123. For example, the step portion 1231 may be formed to face the protruding end portion of the pawl 1223.

The spring 1232 is fixed between the stepped portion 1231 and the pawl 1223 and is capable of applying an elastic force to the pawl 1223. For example, the spring 1232 may have a rod-shaped end portion extending in the direction of the step portion 1231 from the wedge-shaped end of the pawl 1223, that is, the rotation center of the pawl 1223, as shown in Figs. 7 and 8, As shown in Fig.

For example, the spring 1232 may apply a rotational moment to allow the pawl 1223 to engage the ratchet 1221. Accordingly, when the pawl 1223 is engaged with the ratchet 1221, the rotary arm 123 can maintain its position even if it is positioned at an arbitrary angle with respect to the rotary support portion 122. [

The rotary arm 123 can also prevent rotation of the rotary arm 123 in the direction in which the ratchet 1221 and the pawl 1223 engage with each other, that is, the direction in which the rotary arm 123 rotates upward with respect to the rotary support portion 122 And can rotate in the downward direction only when a suitable force for rotating the rotary arm 123 in the downward direction is applied.

The pin 1234 may protrude from the protruding end of the pawl 1223 in the longitudinal direction of the spring 1232 or the rotary arm 123 and may pass through the hole of the stepped portion 1231. [ For example, the pin 1234 may be formed to pass through the spring 1232.

When the pin 1234 connected to the pawl 1223 is pulled, a pivoting moment can be applied to the pawl 1223 in the direction opposite to the direction of the rotational moment applied by the spring 1232, so that the pawl 1223 and the ratchet 1221 may be released.

For example, the stepped portion 1231 and the pin 1234 may be formed with stepped portions, grooves, or projections, respectively, which are fitted together or engaged with each other so as to restrain the pin 1234 from being pulled.

According to the above structure, the rotary arm 123 can move freely while the pin 1234 is pulled, but the rotary arm 123 is prevented from rotating in the upward direction in the state where the pulling of the pin 1234 is released , And can be rotated only in the downward direction.

 9 and 10 are views showing a shape memory polymer antenna developed through an antenna expansion device according to an embodiment.

Referring to Figs. 9 and 10, it can be seen that the shape of the folded shape memory polymer antenna 4 is guided through the antenna expansion device 12 of the embodiment.

The antenna expansion device 12 rotates each of the rotary arms 123 upward so as to support the folded shape memory polymer antenna 4 in a state in which the pins 1234 of the rotary arms 123 are pulled, And after that, the pulling of the pin 1234 can be released.

9, the folded shape memory polymer antenna 4 may be disposed above the pedestal 121 and the rotary arm 123. [ For example, the points where the shape memory polymer antenna 4 is folded upward may be disposed so as to be in contact with the rotary arm 123.

For example, the edge portion of the shape memory polymer antenna 4 may be fixed to the rotary arm 123 through a separate fixing device. For example, the center portion of the shape memory polymer antenna 4 may be fixed to the center portion of the pedestal 121.

When the shape memory polymer antenna 4 is heated by the external heat source to return to the original disk shape, as shown in Fig. 10, the portion of the shape memory polymer antenna 4 which is in contact with the rotary arm 123 is expanded At the same time, the rotary arm 123 can be pushed downward and the rotary arm 123 can be rotated downward.

On the other hand, due to the structure of the pawl 1223 and the ratchet 1221, the rotary arm 123 can not be pivoted upward, so that the shape memory polymer antenna 4 can be prevented from moving in the direction opposite to the direction in which the shape memory polymer antenna 4 is deployed And it is possible to guide the development of the shape memory polymer antenna 4 only in the expanding direction, that is, the downward direction.

FIG. 11 is a perspective view illustrating an antenna folding and deploying system according to an embodiment, and FIG. 12 is an exploded perspective view of an antenna folding and deploying system according to an embodiment.

Referring to FIGS. 11 and 12, the antenna folding and expanding system 5 according to one embodiment can perform both the folding and expanding process of the shape memory polymer antenna 4. FIG.

For example, the antenna folding and deployment system 5 may include an antenna deployment device 12 and a folding module 3.

The antenna expansion device 12 can guide the expansion of the folded shape memory polymer antenna 4. [ For example, the antenna expansion device 12 may include the configuration of the antenna expansion device 12 shown in Figs. 6 to 8.

For example, the antenna deployment device 12 may include a pedestal 121, a rotatable support 122, a rotary arm 123, and an engagement end 124.

The pedestal 121 can be supported on the ground to support the shape memory polymer antenna 4. For example, an insertion hole 1211 formed in a direction perpendicular to the paper surface may be formed on the upper side of the pedestal 121. For example, the vertical bar 33 of the folding module 3 may be inserted into the insertion hole 1211.

The rotation support portion 122 and the rotation arm 123 may be the same as those of the rotation support portion 122 and the rotation arm 123 described above in the antenna expansion device 12 shown in Figs. A description thereof will be omitted.

The engagement end 124 may be provided at the projecting end of the rotary arm 123. [ For example, the coupling end 124 may be provided with a hole through which the connecting rod 35 of the folding module 3 can be inserted. For example, the hole may have a threaded female thread shape. For example, the engagement end 124 can rotate relative to the rotary arm 123 with respect to an axis along the longitudinal direction of the rotary arm 123.

The folding module 3 can perform folding of the shape memory polymer antenna 4 in combination with the antenna expansion device 12.

For example, the folding module 3 may include a vertical bar 33, a fixing plate 36, a connector 32, and a connecting rod 35.

The vertical bar 33 may be a long columnar member. For example, the vertical bar 33 may be inserted into the insertion hole 1211 perpendicular to the paper surface.

For example, the shape memory polymer antenna 4 may be arranged so that the insertion hole 1211 and the hole of the shape memory polymer antenna 4 overlap with each other on the pedestal 121, and then the vertical rod 33 is inserted into the pedestal 121, so that the shape memory polymer antenna 4 can be fixed in the horizontal direction with respect to the vertical bar 33.

The fixed plate 36 is disposed in a section of the vertical bar 33 and contacts the shape memory polymer antenna 4 placed on the upper side of the pedestal 121 to move the shape memory polymer antenna 4 in the vertical direction Can be fixed. For example, the fixing plate 36 can be moved along the vertical bar 33 by forming a hollow through the vertical bar 33.

The connector 32 may be a hollow member that passes through the vertical bar 33 and can move in the vertical direction.

The connector 32 may include a plurality of connection holes. For example, the plurality of connection holes may be a hole which is recessed from the side surface of the connector 32 in a radially spaced interval. For example, the connection holes may be formed according to the number of connection rods 35 installed. For example, the connection holes may be four as shown in Figs. 11 and 12. Fig.

And may be rotatably installed and detachably connected between the connection rod 35, the plurality of connection holes, and the coupling end 124 of the antenna expansion device 12. [ The rotary arm 123 and the connection rod 35 can be bent or spread as the distance between the connector 32 and the pedestal 121 is adjusted.

For example, the rotary arm 123 and the connection rod 35 may be formed as four as shown in FIGS. 11 and 12, but they may be formed in any number.

For example, the connecting rod 35 may include an upper joint portion 351 and a lower joint portion 352.

The upper joint part 351 may be a hinge coupling part formed at the upper end of the connection rod 35 and detachably inserted into the connection hole of the connector 32. [ For example, the rotational direction of the upper joint 351 may be a direction in which the vertical bar is bent or unfolded.

The lower joint 352 may be a hinge coupling formed at the lower end of the coupling rod 35 and detachably inserted into the hole of the coupling end 124. For example, the direction of rotation of the lower joint 352 may be a direction of bending or spreading in a state of facing the vertical bar 33.

For example, one end of the lower joint 352 may be formed with a pin, wedge, or threaded protrusion that can be inserted and fastened into the hole of the coupling end 124.

According to the antenna folding and deployment system 5, the folding of the shape memory polymer antenna 4 is performed by moving the connector 32 upward after coupling the antenna expansion device 12 and the antenna folding device 11 .

After the folding of the shape memory polymer antenna 4 is completed, the folding module 3 is detached from the antenna expansion device 12 to serve as an antenna expansion device 12 for guiding the development of the shape memory polymer antenna 4 Can be performed.

FIG. 13 is a view illustrating a process of folding a shape memory polymer antenna in an antenna folding and deployment test system according to an embodiment and fixing a shape by cooling the heating / cooling device.

13, an antenna folding and deployment test system 1 according to one embodiment may include a chamber 13, an antenna folding device 11, and a heating / cooling device 14.

The chamber 13 may provide an internal space for performing the folding of the shape memory polymer antenna 4.

The antenna folding device 11 can be disposed in the inner space of the chamber 13 to fold the shape memory polymer antenna 4. For example, the antenna folding device 11 may have the same configuration as the antenna folding device 11 shown in FIGS. 1 to 5, and thus a detailed description thereof will be omitted.

The heating / cooling device 14 may be installed in the inner space of the chamber 13 to cool the shape memory polymer antenna 4 folded by the antenna folding device 11 to temporarily fix the shape.

The antenna folding and deployment test system 1 is configured to fold the shape memory polymer antenna 4 over the transition temperature in the chamber 13 through the antenna folding device 11 and then to heat the cooling / It is possible to temporarily fix the folded shape of the shape memory polymer antenna 4 by cooling the shape memory polymer antenna 4 to a transition temperature or lower.

According to the antenna folding and deployment test system 1, the folding process of the shape memory polymer antenna 4 through the antenna folding device 11 and the process of fixing the shape memory polymer antenna 4 to the temporary shape of the folded shape are performed You can test.

FIG. 14 is a diagram illustrating a process of self-expanding a shape memory polymer antenna through heat generation of a heating / cooling device in an antenna folding and deployment test system according to an embodiment.

14, an antenna folding and deployment test system 1 according to one embodiment may include a chamber 13, an antenna deployment device 12, and a heating / cooling device 15.

The chamber 13 may provide an interior space for performing the deployment of the shape memory polymer antenna 4. [

The antenna expansion device 12 can be disposed in the inner space of the chamber 13 to guide the expansion process of the folded shape memory polymer antenna 4. [ For example, the antenna expansion device 12 may have the same configuration as that of the antenna expansion device 12 shown in Figs. 6 to 10, and thus a detailed description thereof will be omitted.

The heating / cooling device 14 is installed in the internal space of the chamber 13 to heat the folded shape memory polymer antenna 4 disposed in the antenna expansion device 12 to a temperature not lower than the transition temperature, Can be restored to the permanent shape (disc shape).

According to the above structure, when the shape memory polymer antenna 4 is folded at a transition temperature or more and then cooled to a transition temperature or lower and fixed to a temporary shape, the shape memory polymer antenna 4 is heated to a temperature not lower than the transition temperature through the heating / , Shape memory behavior that recovers from the temporary shape to the permanent shape may be caused. At this time, the antenna expansion device 12 can guide the development of the shape memory polymer antenna 4 in a state of accommodating the shape memory polymer antenna 4.

In the antenna folding and deployment test system 1, in the process of recovering the shape memory polymer antenna 4 from the folded temporary shape to the disk-shaped permanent shape, the antenna expansion device 12 moves the shape memory polymer antenna 4 You can test whether you can guide it effectively.

For example, in the process of developing the shape memory polymer antenna 4 shown in FIG. 14, the shape memory polymer antenna 4 is folded in the antenna folding device 11 immediately after the folding process of the shape memory polymer antenna 4 shown in FIG. And then mounting it on the antenna expansion device 12.

For example, the antenna folding device 11 and the antenna deployment device 12 may be replaced by the antenna folding and deployment system 5 shown in Figs. 11 and 12, in which case the shape memory polymer antenna 4, The folding and expansion process of the shape memory polymer antenna 4 can be performed without transferring the shape memory polymer antenna 4 between the antenna folding device 11 and the antenna expansion device 12. [

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. For example, it is contemplated that the techniques described may be performed in a different order than the described methods, and / or that components of the described structures, devices, and the like may be combined or combined in other ways than the described methods, Appropriate results can be achieved even if they are replaced or replaced.

Therefore, other implementations, other embodiments and equivalents to the claims are within the scope of the following claims.

Claims (11)

delete delete delete delete A pedestal supported on the ground;
A plurality of rotatable supports mounted radially on the pedestal; And
And a rotary arm provided so as to be rotatable in the vertical direction with respect to the rotary support portion and supporting the shape memory polymer antenna,
Wherein the rotary arm is rotated only in the downward direction when the shape memory polymer antenna is deployed,
The rotation support portion
And a ratchet formed in an end portion connected to the rotary arm,
The rotary arm
A pawl that is rotatably installed at an end portion connected to the rotation support portion and engages with the ratchet; And
And a spring which is supported from one side of the rotation support portion and connected to one side of the pole to apply a rotation moment to the pole in one direction,
Wherein rotation of the rotary arm in the upward direction is prevented by engagement of the ratchet and the pawl.
delete delete 6. The method of claim 5,
The rotary arm
Further comprising a pin protruding from one side of the pole in a direction in which the spring is connected,
And the engagement of the ratchet and the pawl is released by pulling the pin.
An antenna expansion device according to claim 5 or 8; And a folding module assembled to the antenna expansion device and capable of folding the shape memory polymer antenna,
Wherein the folding module is attachable to and detachable from the antenna deployment device.
10. The method of claim 9,
The pedestal includes an insertion hole formed on an upper surface thereof, the insertion hole being recessed in a direction perpendicular to the paper surface,
The folding module includes:
A removable vertical rod inserted into the insertion hole perpendicularly to the ground;
A connector having a plurality of connection holes which are vertically movable in a state of being pierced by the vertical bar and which are recessed from a side surface at regular intervals in a radial direction; And
And a connection rod rotatably detachably attached to a protruding end portion of the rotary arm and the other end rotatably connected to the connection hole.
A chamber having an interior space;
An antenna folding device disposed in the chamber;
An antenna deployment device according to claim 5 disposed within the chamber; And
An antenna folding arrangement including a heating / cooling cooling device disposed in the chamber and cooling the shape memory polymer antenna folded by the antenna folding device or heating a folded shape memory polymer antenna disposed in the antenna expansion device; Deployment test system.

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