JP5665019B2 - Expanded structure - Google Patents

Description

  The present invention relates to a deployment structure having a deployment mechanism.

Conventionally, many unfolding structures having unfolding mechanisms have been proposed.
For example, Patent Literature 1 and Patent Literature 2 disclose a deployment structure for space that is mounted on an artificial satellite and deployed in space.

  The conventional deployment structure according to Patent Document 1 is used for antennas and solar cell units deployed in outer space, and is installed on a regular hexagonal first panel and six sides of the first panel. It consists of six triangular second panels and a plurality of third panels installed so as to fill the space between the second panels. In addition, the first panel, the second panel, and the third panel are configured to be a regular hexagon as a whole when unfolded, and a hinge is provided at a connecting portion between the panels so that the panels can be folded when stored. ing.

  With this configuration, the conventional unfolding structure according to Patent Document 1 can have a substantially hexagonal column shape when housed, and each panel can be unfolded radially and unfolded into regular hexagons when unfolding. Thereby, while being able to make the volume at the time of accommodation as small as possible, the intensity | strength at the time of expansion | deployment can be raised.

  Further, the deployable structure according to Patent Document 2 is used for a parabolic antenna mounted on an artificial satellite, and a deployable truss in which four-side links in which link members are linked in a rectangular shape are combined in a radially foldable manner. And a wire member stretched so as to cross diagonally between the link members outside the four-side links of the adjacent deployment trusses. Both ends of the wire member are linked to the module coupling hinge of the link member via a rotating member. The wire member is provided with a rod member for restricting the position of the wire member. The rod member is provided such that one end thereof is provided on the module coupling hinge of the link member and the other end extends from the intersection of the wire members. ing.

  With this configuration, the conventional unfolded structure according to Patent Document 2 is protected by being restricted by the rod member at one end of the link member outside the four-side link when the four-side link is folded. Is done. In addition, in a state where the four-side links are unfolded, the wire member is stretched around the four-side links, so that it is possible to make the link members robust.

JP 2001-108193 A JP 2001-233299 A

  However, in the conventional unfolding structure disclosed in Patent Document 1 and Patent Document 2 described above, in order to unfold the unfolding structure, it is necessary to actuate each member constituting the unfolding structure. .

  For this reason, when deploying the deployment structure, it is necessary to use a plurality of actuators as a power source, or to use a complicated device using wires, etc. There is a problem that multiple power sources or complex power sources are required.

  The present invention solves such a problem, and an object thereof is to provide a deployment structure that can easily deploy the entire deployment structure without using a plurality of power sources or complex power sources. To do.

  One form of the unfolding structure according to the present invention is a unfolding structure configured by combining a plurality of X-position nodal structures having X rod-like members joined by nodes, and the X-position nodal structure. Has a first unit of m-th node in which one end of m rod-shaped members is rigidly connected, and a second unit of n-th node in which one end of n rod-shaped members is rigidly connected, The first unit and the second unit are slid, and in the adjacent X-position node structure, the other end of the rod-shaped member of one X-position node structure and the other X-position node structure The other end of the rod-shaped member is slid. Here, n and m are natural numbers of 3 or more, and X is a natural number of n + m or more.

  With this configuration, the rotational action is propagated from the X-position node structure to which the rotational action is given to all the X-position structure structures only by locally giving the rotational action to any X-position structure. Thus, the entire deployment structure can be actuated.

  Furthermore, in one form of the unfolded structure according to the present invention, the smooth portion where the other end portions of the rod-shaped members of the adjacent X-position node structures are smoothed is the one in the X-position node structure. A portion where the other end portion of the rod-shaped member of the first unit, the other end portion of the rod-shaped member of the second unit in the other X-position node structure, and one X-position node structure It is preferable that the other end portion of the rod-shaped member of the second unit in and the other end portion of the rod-shaped member of the first unit in the other X-position node structure are slid.

  With this configuration, the deployment structure can be easily deployed without a complicated configuration.

  Furthermore, in one form of the expanded structure according to the present invention, m = n = 4 and X = 8, and in the adjacent 8-position structure, the first unit in one of the 8-position structures is provided. The other end of the rod-shaped member and the other end of the rod-shaped member of the second unit in the other eight-position node structure are slid and the second unit in the one eighth-position node structure It is preferable that the other end portion of the rod-shaped member and the other end portion of the rod-shaped member of the first unit in the other 8-position node structure are smoothed.

  With this configuration, the deployment structure can be easily deployed by the 8-position node structure having 8 rod-shaped members.

  Furthermore, in one form of the unfolded structure according to the present invention, the nodal portion where the first unit and the second unit are smoothed is formed by a bar-shaped member interference avoiding member so that the bar-shaped members do not interfere with each other. It is preferable to be configured.

  With this configuration, interference between the rod-shaped members can be avoided, so that the development structure can be folded as small as possible.

  Furthermore, in one form of the expanded structure according to the present invention, the bar-shaped member interference avoiding member further includes X rotating parts stacked in an X layer, and the X bar-shaped members are respectively provided. It is preferable that the rotating parts are fixed to X pieces.

  With this configuration, since the rod-shaped members can be arranged in different layers, interference between the rod-shaped members can be avoided, and the development structure can be folded as small as possible.

  Furthermore, in one form of the unfolding structure according to the present invention, it is preferable that all the rod-like members of the first unit and the second unit have the same length.

  Furthermore, in one form of the expanded structure according to the present invention, it is preferable that the X-position nodal structures are arranged in a matrix of p rows and q columns. Here, p and q are natural numbers of 2 or more.

  Furthermore, in one form of the unfolded structure according to the present invention, a position in the height direction of the one end portion of the rod-shaped member is different from a position in the height direction of the other end portion of the rod-shaped member. preferable.

  Thereby, the deployment structure can be deployed not only in the X-axis direction and the Y-axis direction but also in the Z-axis direction.

  Moreover, one form of the solar cell unit which concerns on this invention is provided with the expansion | deployment structure based on said this invention, and the solar cell panel installed in the said expansion | deployment structure.

  Moreover, one form of the folding tent structure according to the present invention includes the unfolded structure according to the present invention described above, and a tent column that slides on the unfolded structure and supports the unfolded structure. It is.

  According to the expanded structure according to the present invention, all the X position structures can be obtained from the X position structure to which the rotation action is applied only by locally applying a rotation action to any X position structure. The entire unfolding structure can be actuated by propagating a rotational action on the body. Thereby, the whole expansion | deployment structure body can be expand | deployed or folded easily, without using a several power source or a complicated power source.

FIG. 1 is a plan view of an X-position node structure that is modeled and expressed as an X-position node structure in the expanded structure according to the present invention. FIG. 2 is a plan view of the unfolded structure modeled on the unfolded structure according to the present invention. FIG. 3 is a partially enlarged plan view of the expanded structure of the present invention showing the broken line portion A shown in FIG. 2 in an enlarged manner. FIG. 4 is a plan view of the unfolding structure showing the unfolding of the unfolding structure according to the present invention. FIG. 5 is a partially enlarged plan view of the development structure showing the development of the development structure according to the present invention, with the broken line portion B shown in each drawing of FIG. 4 enlarged. FIG. 6 is a plan view of the development structure according to the embodiment of the present invention. FIG. 7 is a schematic perspective view of rod-like members constituting the first unit and the second unit of the X-position node structure according to the embodiment of the present invention. FIG. 8 is an enlarged side view of a sliding portion, which is a portion where the other end portions of the bar-shaped members of adjacent 8-position node structures are smoothed in the developed structure according to the embodiment of the present invention. FIG. 9 is an exploded perspective view of the bar-shaped member interference avoiding member constituting the node portion of the development structure according to the embodiment of the present invention. FIG. 10 is a plan view and a cross-sectional view of a rotating component located at level 1 in the developed structure according to the embodiment of the present invention. FIG. 11 is a plan view and a cross-sectional view of a rotating component located at level 2 in the developed structure according to the embodiment of the present invention. FIG. 12 is a plan view and a cross-sectional view of a rotating component located at level 4 in the developed structure according to the embodiment of the present invention. FIG. 13 is a plan view and a cross-sectional view of a rotating component located at level 6 in the developed structure according to the embodiment of the present invention. FIG. 14 is a plan view of a development structure that represents the development structure according to the present invention as a model, and a diagram showing a layer level of a rod-shaped member in the development structure. FIG. 15 is a schematic diagram showing the layer level of the rod-like members of the first unit and the second unit of the 8-position node structure when the unfolded structure is folded and unfolded. FIG. 16 is a plan view of the rotating component at each level of the 8-position node structure when the unfolded structure corresponding to FIG. 15 is folded and fully unfolded. FIG. 17 is a partially enlarged view of the unfolded structure when the unfolded structure according to the embodiment of the present invention is most folded. FIG. 18 is a plan view showing a part of a development structure according to Modification 2 of the present invention. FIG. 19 is a plan view and a cross-sectional view of a developed structure according to Modification 6 of the present invention. FIG. 20 is a plan view of the rotating member in the bar-shaped member interference avoiding member of the developed structure according to Modification 7 of the present invention. FIG. 21 is a plan view of a development structure used in the solar cell unit according to Application Example 1. FIG. FIG. 22 is a diagram illustrating a state in which each cell of the deployment structure used in the solar cell unit according to Application Example 1 is deployed. FIG. 23 is a plan view and a side view of a tent structure according to Application Example 2. FIG. 24 is a diagram illustrating a state in which the tent structure according to Application Example 2 is developed. FIG. 25 is a side view of a tent according to Application Example 2. FIG. FIG. 26 is a diagram illustrating a folded state of the folding tent structure according to Application Example 2. FIG. 27 is an external perspective view of an antenna structure according to Application Example 3. FIG. FIG. 28 is a view showing a developed structure having a spherical framework structure.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a development structure according to the invention will be described with reference to the drawings. However, needless to say, the development structure according to the present invention is not limited to the following embodiments.

  First, the principle of operation of the unfolding structure according to the present invention will be described by modeling the unfolding structure according to the present invention.

  FIG. 1 is a plan view of an X-position node structure that is modeled and expressed as an X-position node structure in the expanded structure according to the present invention. FIG. 1A is a plan view showing one X-position nodal structure constituting the expanded structure, and FIG. 1B shows a first unit constituting the X-position nodal structure. FIG. 1C is a plan view showing a second unit constituting the X-position node structure. Note that arrows R and L in FIG. 1A indicate the rotation directions in which the first unit and the second unit of the X-position node structure rotate, arrow R indicates the clockwise direction, and arrow L indicates the counterclockwise direction. The direction of rotation is shown.

  As shown in FIG. 1A, the X-position node structure 10 that is a constituent unit of the development structure 1 according to the present invention includes a first unit 110 and a second unit 120. When the X-position node structure 10 is disassembled into the first unit 110 and the second unit 120, it can be disassembled as shown in FIG. 1 (b) and FIG. 1 (c).

  As shown in FIGS. 1B and 1C, the first unit 110 and the second unit 120 are configured by rigidly joining one end portions of a plurality of rod-shaped members. Here, a unit composed of m rod-shaped members is referred to as an m-th node, and an m-th node unit is referred to as a first unit. Similarly, a unit composed of n rod-shaped members is referred to as an n-th node, and an n-th node unit is referred to as a second unit. Note that m and n are natural numbers of 3 or more, respectively. Further, the rod-shaped members constituting the X-position joint structure 10, that is, the rod-shaped members constituting the first unit 110 and the second unit 120 are constituted by, for example, beam members, and have a length in the major axis direction. A member larger than the length in the width direction is meant. Moreover, although the cross-sectional shape of a rod-shaped member is made into a rectangular shape in this embodiment, the cross-sectional shape of a rod-shaped member is not limited to this. For example, the cross-sectional shape of the rod-shaped member may be circular or elliptical.

  In the present embodiment, each of the first unit 110 and the second unit 120 is a four-position node (m = n = 4) composed of four rod-shaped members. Accordingly, as shown in FIG. 1B, the first unit 110 is composed of four rod-shaped members 111, 112, 113, and 114, and one ends thereof are connected at a node 115. The node 115 of the first unit 110 is a rigid node, and the four rod-shaped members 111, 112, 113, 114 are arranged so as to be always in a cross shape when seen in a plan view. Alternatively, it is fixed by a connecting member such as a rotating part. Similarly, as shown in FIG. 1C, the second unit 120 is also composed of four rod-shaped members 121, 122, 123, and 124, and one end portions thereof are connected at a node 125. The node 125 of the second unit 120 is also a rigid node, and when viewed in plan, the four rod-shaped members 121, 122, 123, and 124 are either end-to-end directly or It is fixed by connecting members such as rotating parts. A specific configuration in which the first unit 110 and the second unit 120 are connected by connecting parts will be described later in the embodiment.

  The first unit 110 shown in FIG. 1 (b) and the second unit 120 shown in FIG. 1 (c) are arranged so that the nodes 115 and 125, which are the rigid joint portions of each other, are aligned with each other. The first unit 110 and the second unit 120 are combined with each other so as to have a common central axis. As a result, an X-position node structure 10 as shown in FIG. In the X-position node structure 10, the first unit 110 and the second unit 120 are combined in a smooth state. Here, the smooth joint is a portion where two members are joined to each other at a common node so as to be freely rotatable. That is, in the smooth joint, the rotational rigidity (rotational resistance) is ideally zero.

  Specifically, the first unit 110 and the second unit 120 are connected to each other at a state where they are joined at the common nodes 115 and 125 and can rotate with respect to each other. As a result, the first unit 110 and the second unit 120 can operate (rotate) in the X-position node structure 10 without being restricted from each other. A specific configuration in which the first unit 110 and the second unit 120 are connected by connecting parts will be described later in the embodiment.

  Here, the X-position nodal structure 10 means that X rod-shaped members are joined by nodes, and “X” means “m” and n of the first unit 110 in the m-th node. It is defined by X = m + n by “n” of the second unit 120 of the rank. Since m and n are natural numbers of 3 or more, X is a natural number of 6 or more.

  In the present embodiment, as shown in FIGS. 1A to 1C, each of the first unit 110 and the second unit 120 is a four-position node (m = n = 4), the X-position node structure 10 according to this embodiment is an 8-position structure.

  Next, the expansion | deployment structure 1 which concerns on this invention is demonstrated using FIG. FIG. 2 is a plan view of the unfolded structure 1 representing the unfolded structure 1 according to the present invention as a model. FIG. 2 shows the state of the unfolded structure 1 during unfolding.

  As shown in FIG. 2, the expanded structure 1 according to the present invention is configured by combining a plurality of X-position node structures 10 shown in FIG. For example, when the expanded structure 1 is viewed in plan, the expanded structure 1 is configured by periodically arranging a plurality of X-position nodal structures 10 in a matrix of p rows and q columns (p × q). be able to. Here, p and q are natural numbers of 2 or more, respectively.

  In the present embodiment, as shown in FIG. 2, an 8-position structure is used as the X-position structure 10, and the 8-position structure is arranged in a 5 × 5 matrix to develop the expanded structure 1. Is configured. However, the 8-position nodal structure located on the outermost periphery shown in FIG. 2 is not an 8-position nodal structure correctly, and a rod-like member that cannot be connected to a bar-like member of another 8-position nodal structure is described. Is omitted. That is, the unfolded structure 1 shown in FIG. 2 has a 4 × 4 cell structure when a region surrounded by a rectangular shape between adjacent rod-shaped members at the time of maximum unfolding is defined as one cell.

  As shown in FIG. 2, the unfolded structure 1 according to the present embodiment is configured such that the rod-shaped members of the X-position node structures 10 adjacent to each other are connected in a sliding manner. That is, the adjacent X-position node structures 10 are configured such that the rod-shaped member of one X-position node structure 10 and the rod-shaped member of the other X-position node structure are connected in a sliding manner.

  The connection part of the adjacent X position node structure 10 is demonstrated in detail using FIG. FIG. 3 is a partially enlarged plan view of the expanded structure of the present invention showing the broken line portion A shown in FIG. 2 in an enlarged manner. Note that the arrows R and L shown in FIG. 3 indicate the rotation direction of the X-position node structure 10, the arrow R indicates the clockwise direction, and the arrow L indicates the counterclockwise direction.

  As shown in FIG. 3, two adjacent X-position structures are both 8-position structures, one is called a first 8-position structure 10A, and the other is a second 8-position structure. It is called body 10B.

  The first 8-position node structure 10A shown on the left side of FIG. 3 has four rod-like members 111A, 112A, 113A, 114A having the same length as the X-position node structure 10 described in FIG. The first unit 110A, which is a four-position node in which one end of each is rigidly connected, and the fourth-position node in which the ends of four rod-shaped members 121A, 122A, 123A, 124A having the same length are similarly rigidly connected. And the second unit 120A. Each of the first unit 110A and the second unit 120A is also arranged and fixed so that the four rod-shaped members always have a cross shape when viewed in plan. Further, the first unit 110A and the second unit 120A are connected to each other at a node 115A of the first unit 110A and a node 125A of the second unit 120A.

  Also, the second 8-position node structure 10B shown on the right side of FIG. 3 has the same configuration as the first 8-position structure 10A, and the second 8-position structure 10B has the same length. The four rod-like members 111B, 112B, 113B, and 114B having the same length as the first unit 110B, which is a four-position node in which the ends of the four rod-like members 111B, 112B, 113B, and 114B are rigidly joined to each other. , 124B is composed of a second unit 120B, which is a four-position node in which one end portions are rigidly joined. Each of the first unit 110B and the second unit 120B is arranged and fixed so that the four rod-shaped members always have a cross shape when viewed in plan. In addition, the first unit 110B and the second unit 120B are coupled to each other at a node 115B of the first unit 110B and a node 125B of the second unit 120B.

  Further, the adjacent first 8-position node structure 10A and second 8-position structure 10B, which are configured in this way, are the other end of the rod-shaped member of one 8-position structure and the other 8-position structure. The other end portion of the rod-like member of the joint structure is connected to the joint. Specifically, as shown in FIG. 3, the other end 116A (the end opposite to the node 115A) of the rod-like member 114A of the first unit 110A in the first 8-position node structure 10A is the second Are connected to the other end 126B (the end opposite to the node 125B) of the rod-like member 123B of the second unit 120B in the eighth node structure 10B. Further, the other end 126A (the end opposite to the node 125A) of the rod-shaped member 121A of the second unit 120A in the first 8-position node structure 10A is the first in the second 8-position node structure 10B. The rod-like member 112B of the unit 110B is connected to the other end 116B (end opposite to the node 115B) with a smooth joint.

  As described above, the adjacent first and second 8-position node structures 10A and 10B are obtained by connecting the rod-shaped members in different units to each other. With such a connection configuration, the relative displacement between the first 8-position node structure 10A and the second 8-position structure 10B is constrained to each other, but is free to rotate with respect to the bending moment. It is in a state. As described above, the smooth joint is a portion in which two members are joined to each other at a common node so as to be freely rotatable. In this embodiment, the end of one rod-shaped member and the end of the other rod-shaped member are pin-coupled by a connecting member, thereby forming a smooth joint.

  Although not shown in FIG. 3, not only the X-position structure adjacent in the left-right direction but also the X-position structure adjacent in the vertical direction is a rod-shaped member of the X-position structure adjacent to each other. The other end portions of these are connected to each other in the same manner as shown in FIG.

  Next, the behavior of the development structure 1 according to the present invention configured as described above will be described with reference to FIGS. 4 and 5. 4 and FIG. 5 is configured so that the rod-like members of the units of the adjacent 8-position structure do not interfere with each other. A specific structure in which the rod-shaped members do not interfere with each other will be described later in Examples. The unfolding structure 1 according to the present invention has a structure that unfolds along a plane (rotation plane) on which the 8-position node structure rotates, and is basically unfolded in a direction perpendicular to the rotation plane. It has a structure that does not. That is, the unfolding structure according to the present invention has a structure that is two-dimensionally expanded or contracted.

  FIG. 4 is a plan view schematically showing how the unfolding structure 1 according to the present invention unfolds. FIG. 4A shows a state in which the unfolding structure 1 according to the present invention is folded, and FIGS. 4B and 4C show a state in the middle of the unfolding of the unfolding structure 1. FIG. 4D shows a state in which the development structure 1 is most developed. As the expanded structure 1, a 4 × 4 cell structure in which 8-position node structures are arranged in a 5 × 5 matrix is used, as shown in FIG. 2.

  First, in the state shown in FIG. 4A, when a rotational action is locally applied to any one of the plurality of X-position nodal structures constituting the expanded structure 1, the expanded structure 1 is expanded. Start. In the present embodiment, as shown in FIG. 4A, a rotational action is added only to the 8-position node structure 10A. That is, the rotational moment is applied as an external force only to the 8-position node structure 10A.

  When a rotational action is added to the 8-position structure 10A, the expanded structure 1 is expanded two-dimensionally, and gradually changes from the state of FIG. 4 (a) to the state of FIG. 4 (b). The structure 1 is further enlarged and gradually changes from the state of FIG. 4B to the state of FIG. Further, the expanded structure 1 gradually changes from the state of FIG. 4C to the state of FIG. As shown in FIG. 4D, when the rod-shaped members of the adjacent X-position node structures 10 are positioned on a straight line, the expanded structure 1 is in the most expanded state (maximum expanded).

  Next, the behavior of the unfolding structure 1 unfolding will be described in more detail with reference to FIG. FIG. 5 is a part of the unfolding structure showing the unfolding of the unfolding structure according to the present invention, in which the broken line portion B shown in each of FIGS. 4 (a) to 4 (d) is enlarged. It is an enlarged plan view. 5 (a) corresponds to FIG. 4 (a), FIG. 5 (c) corresponds to the broken line portion B in FIG. 4 (b), and FIG. 5 (f) corresponds to the broken line portion B in FIG. 4 (c). Correspond. 5 (a) to FIG. 5 (g) only depict four adjacent 8-position node structures 10A, 10B, 10C, and 10D and their rod-like members in each drawing of FIG. If there is a rod-shaped member in an 8-position node structure other than the four adjacent 8-position structures, it is necessary to draw a rod-shaped member of an 8-position node structure other than the four 8-position structures. Not drawn about. Moreover, in each figure of FIG. 5, the overlapping state of each component, such as a rod-shaped member, is not drawn correctly. The unfolding operation in consideration of the overlapping state of bar-shaped members (interference of bar-shaped members) will be described later in the embodiment. Therefore, in each drawing of FIG. 5, the unfolding operation of the unfolding structure will be described on the assumption that the constituent elements such as the rod-shaped members do not overlap. Note that arrows R and L in FIG. 5A indicate the rotation direction of the X-position nodal structure, arrow R indicates the clockwise direction, and arrow L indicates the counterclockwise direction.

  FIG. 5A to FIG. 5G are schematic views showing a state in which the expansion structure 1 is displaced when the 8-position node structure constituting the expansion structure 1 rotates. In the present embodiment, the description will be made by paying attention to the 8-position node structures 10A, 10B, 10C, and 10D shown in FIG. 4 among the four adjacent 8-position structures constituting the expanded structure 1.

  The state of FIG. 5A is a state in which the unfolded structure 1 is folded, and this state will be described as a reference.

  First, a rotational action is locally applied to any one of the 8-position structure constituting the expanded structure. In the present embodiment, a rotational action is added only to the 8-position node structure 10A shown in FIG. That is, the rotational moment is applied as an external force only to the 8-position node structure 10A.

  When a rotational action is added to the 8-position node structure 10A, the rotation action may be added to at least one of the first unit and the second unit constituting the 8-position node structure 10A. For example, the rotational action may be added to only one of the first unit or the second unit, or the rotational action may be added to the first unit and the second unit at the same time. In any case, the rotational action is propagated to the first unit and the second unit of all the 8-position structure constituting the expanded structure.

  In the present embodiment, as shown in FIG. 5A, a counterclockwise rotation action as indicated by an arrow L is added to the first unit (black bar-like member) of the eighth joint structure 10A. In addition, a clockwise rotating action as indicated by an arrow R was added to the second unit (open bar-shaped member). In this manner, by adding a rotating action to the first unit and the second unit, rotating actions in opposite directions are added to the first unit and the second unit. That is, the opposite rotational moment acts as an external force on the first unit and the second unit.

  Thus, as shown by the arrows R and L in FIG. 5A, the rotational action of the arrow L (counterclockwise) is added to the first unit of the 8-position node structure 10A, and the second unit is When a rotational action indicated by an arrow R (clockwise) is added, the rotational action of the 8-position node structure 10A is exerted on the 8-position node structures 10B and 10C that are connected to the 8-position node structure 10A via a rod-like member. Propagate.

  More specifically, the counterclockwise rotation (in the direction of arrow L) of the first unit of the 8-position node structure 10A is connected to the rod-like member of the first unit of the 8-position structure 10A. It propagates to the rod-shaped member of the second unit of the 8-position node structure 10B. As a result, the second unit of the eighth joint structure 10B rotates clockwise.

  At the same time, the clockwise rotation (in the direction of arrow R) of the second unit of the eighth node structure 10A is the eighth node connected to the rod-like member of the second unit of the eighth node structure 10A. It propagates to the rod-shaped member of the first unit of the structure 10B. As a result, the first unit of the eighth joint structure 10B rotates counterclockwise.

  The same can be said for the 8-position structure 10C. That is, simultaneously with the propagation of the rotating action to the 8-position node structure 10B, the rotation action of the first unit of the 8-position node structure 10A in the counterclockwise direction (arrow L direction) is the second unit of the 8-position node structure 10C. As a result, the second unit of the 8-position node structure 10C rotates clockwise. Further, the clockwise action (in the direction of arrow R) of the second unit of the 8-position node structure 10A propagates to the first unit of the 8-position node structure 10C. The unit will rotate counterclockwise.

  Similarly, the rotational action of the 8-position node structure 10B and the 8-position node structure 10C propagates to the 8-position node structure 10D, whereby the first unit and the second unit of the 8-position node structure 10D. Will rotate.

  Thus, when the rotation of the first unit and the second unit of the 8-position node structure 10A proceeds, the first position of the 8-position node structure 10A as shown in FIGS. 5B to 5G. According to the rotation of the unit and the second unit, the first unit and the second unit of the eighth joint structures 10B, 10C, and 10D are also rotated sequentially.

  Here, in the state of FIG. 5B, the first unit of the 8-position node structure 10A is 10 degrees counterclockwise (in the direction of the arrow L) and the second unit is clockwise from the state of FIG. This shows a state in which each is rotated 10 degrees in the direction of arrow R.

  5C, the first unit of the 8-position node structure 10A is 20 degrees counterclockwise (in the direction of the arrow L) and the second unit is clockwise (from the state of FIG. 5A). This shows the state rotated 20 degrees in the direction of arrow R).

  Similarly, the states of FIG. 5D, FIG. 5E, FIG. 5F, and FIG. 5G are the first of the 8-position node structure 10A from the state of FIG. The unit is rotated 30 degrees, 40 degrees, 55 degrees, 75 degrees counterclockwise (arrow L direction), and the second unit is rotated 30 degrees, 40 degrees, 55 degrees, 75 degrees clockwise (arrow R direction). Is shown.

  Thus, in the present embodiment, the first unit and the second unit in the same 8-position node structure are in opposite directions and rotate by the same angle.

  Then, as shown in FIGS. 5A to 5G, each of the eighth node structures 10A, 10B, 10C, and 10D is rotated as the eight node structures 10A, 10B, 10C, and 10D are rotated. The positions of the 8-position node structures 10A, 10B, 10C, and 10D are gradually displaced so that the distance between the centers is increased. That is, if the center of the 8-position node structure 10A is temporarily fixed, as shown in FIGS. 5A to 5G, the 8-position structure 10B, 10C, and 10D are respectively 8-position structure. It is gradually displaced in the direction away from 10A.

  Although not shown in FIG. 5 after the state of FIG. 5G, the angle formed by the rod-shaped members of the first unit (or second unit) of the adjacent 8-position structure is approximately 180 degrees. In this state, the center-to-center distances of the 8-position node structures 10A, 10B, 10C, and 10D are maximized. That is, this case is a state where the expanded structure 1 is expanded to the maximum. This state is the state shown in FIG.

  The unfolding operation of the unfolding structure 1 described above is a case where the unfolding structure 1 is unfolded, that is, the unfolding structure 1 is expanded and deformed. The same applies to the case where the unfolded structure is folded from the maximum unfolded state, that is, the case where the unfolded structure 1 is reduced and deformed. When the unfolded structure 1 is deformed in a reduced size, the unfolded structure 1 is folded so as to return from FIG. 5 (g) to FIG. 5 (a) by adding a rotational action to an arbitrary X-position structure 10. It will be folded.

  As described above, the expanded structure 1 according to the present invention adds all the X positions by locally adding a rotational action to any one of the X-position nodal structures 10 constituting the expanded structure 1. A rotational action can be propagated to the knot structure 10. That is, all the X-position node structures 10 can be uniformly expanded or contracted by simply adding a rotational action locally to any X-position node structure 10. Therefore, the entire deployment structure can be easily expanded or folded without using a plurality of power sources or complicated power sources.

Next, the Example which showed the specific structure of the expansion | deployment structure based on this invention is described.
In the above embodiment, the unfolded structure according to the present invention has been modeled. However, since each component of the unfolded structure actually has a predetermined shape, dimensions, etc., the unfolded structure is unfolded or folded. When folding, it must be considered that these components interfere. That is, when the X-position nodal structure rotates, the components may collide with each other. Hereinafter, the interference of each component will be described in detail while explaining the specific structure of each component.

  FIG. 6 is a plan view of the unfolded structure 1 according to the embodiment of the present invention. FIG. 6A is a diagram of the unfolded structure showing the state when the unfolded structure 1 is most folded (minimum). FIG. 6B is a plan view of the expanded structure showing a state when the expanded structure 1 is expanded to the maximum (maximum time). Also in this embodiment, an 8-position structure is used as the X-position structure 10, and an 8-position structure having the same configuration is periodically arranged in a 5 × 5 matrix. The expanded structure 1 is configured. As in the above-described embodiment, the 8-position node structure located on the outermost periphery is not an 8-position node structure, and is a rod-like member that cannot be connected to the other 8-position structure rod-like members. Has a structure in which the description is omitted.

  Moreover, the expansion | deployment structure body 1 which concerns on the Example of this invention respond | corresponds to the expansion | deployment structure body 1 which concerns on embodiment of this invention mentioned above, and a basic composition is the structure of the expansion | deployment structure body 1 which concerns on embodiment of this invention. It is the same composition. That is, the X-position node structure 10 in the unfolded structure 1 according to the embodiment of the present invention is the same as the first unit that is a 4-position node in which one end of four rod-like members having the same length is rigidly connected. And an 8-position node structure comprising a second unit which is a 4-position node in which one end of four rod-shaped members having the same length is rigidly connected. Each of the first unit and the second unit is arranged and fixed in a cross shape when the four rod-like members are viewed in plan, and the units are connected to each other at the center of each other. . Further, the other end portions of the bar-like members of the units of the adjacent 8-position structure are connected to each other.

  Here, as shown in FIGS. 6 (a) and 6 (b), in one 8-position node structure, one end of the rod-shaped member 400 is a rigidly-joined portion, and includes a first unit and a second unit. The part where the slid is connected is referred to as the node part 200 (the connecting part of the first unit and the second unit), and the part where the other ends of the bar members 400 of the adjacent 8-position structure are connected together is slid. This is referred to as a node part 300.

  In this embodiment, in the joint portion 200 and the joint portion 300, which are smooth joints, the rotational rigidity of the smooth joints is not zero, and is a finite size that is relatively small relative to the bending rigidity (or Young's modulus) of the rod-shaped member. Assume that

  At this time, the unfolded structure 1 according to the present embodiment can be configured by connecting the rod-shaped members 400 in the sliding portion 300 with a rotation spring (not shown) such as a mainspring. In this case, as shown in FIG. 6 (b), when the state where the expanded structure 1 is expanded to the maximum is in an equilibrium state, a rotational action is added as an external force, as shown in FIG. 6 (a). In a state where the unfolded structure 1 is folded, the unfolded structure 1 is biased by the rotation spring, and thus a lock mechanism is required to maintain the folded state. Then, by unlocking the lock mechanism, the deployment structure 1 starts to be automatically deployed (without applying external force) by the restoring force of the rotary spring, and returns to the equilibrium state.

  Such a biasing means such as a rotary spring may be provided in all the sliding portions 300 of the deployment structure 1, but may be provided in any one of the sliding portions 300. Such an urging means can be applied not only to the node portion 300 but also to the node portion 200 where the first unit and the second unit are noded.

  Next, the shape and the like of each component constituting the 8-position node structure shown in each drawing of FIG. 6 will be described with reference to FIGS.

  FIG. 7 is a schematic perspective view of a rod-shaped member 400 constituting the first unit and the second unit of the 8-position node structure according to the embodiment of the present invention.

  As shown in FIG. 7, each rod-like member 400 constituting the first unit and the second unit of the eight-node structure according to the embodiment of the present invention is constituted by a rod-like beam 401 having a rectangular cross section. One end 402 of the beam 401 is a portion for fixing the four beams 401 to each other. In the present embodiment, one end portion 402 of the four beams 401 is fixed by a connecting component described later. The other other end 403 of the beam 401 is a portion to which the other end of the bar-shaped member of another unit is connected. The other end 403 is provided with a through hole 404 for making a smooth connection with the other end of a bar-shaped member of another unit.

  The dimensions of the beam 401 are, for example, a length L of 100 mm, a width W of 10 mm, and a thickness t of 5 mm. The material of the beam 401 is aluminum, for example.

  FIG. 8 is an enlarged side view of the sliding portion 300 which is a portion where the other end portions of the bar-shaped members of the adjacent 8-position node structures are smoothed in the developed structure according to the embodiment of the present invention.

  As shown in FIG. 8, the smooth portion 300 in the adjacent 8-position structure is composed of the other end portion 403A of the rod-shaped member 400A of the first unit in one 8-position structure and the other 8-position structure. The other end portion 403B of the rod-shaped member 400B of the second unit in FIG. Specifically, the through hole 404A of the other end portion 403A of the rod-shaped member 400A related to one 8-position node structure and the through-hole 404B of the other end portion 403B of the rod-shaped member 400B of the other 8-position node structure are formed. The common pins 405 are penetrated and connected to each other. The common pin 405 includes a pin shaft 405a penetrating through the through holes 404A and 404B, and two bolts 405b provided at both ends of the pin shaft 405a so as to sandwich the rod-shaped members 400A and 400B. With this configuration, the two rod-shaped members 400A and 400B are rotatable about the common pin 405. Note that a rivet or the like may be used as the connection configuration.

  In addition, the structure which comprises the smooth part 300 is not restricted to what is shown in FIG. 8, What kind of thing may be used as long as the function of the smooth part 300 can be achieved. However, as shown in FIG. 8, the connecting member that connects the rod-shaped member 400A and the rod-shaped member 400B has a structure that is not visible from the rod-shaped members 400A and 400B when the rod-shaped members 400A and 400B are viewed from the side. It is preferable to do. This is to avoid interference between the connecting members when the rod-shaped member rotates.

  Next, interference of each component of the development structure 1 according to the present embodiment will be described with reference to FIG.

  6A and 6B, the size of the smooth portion 300 is the same as or smaller than the width of the rod-shaped member 400, and the size of the smooth portion 300 is larger than the size of the nodal portion 200. Furthermore, when the length of the rod-shaped member 400 is sufficiently longer than the size of the node portion 200 and the smooth portion 300, the interference that must be taken into consideration is the interference between the rod-shaped members 400 in the adjacent 8-position node structures. Interference (or interference between the smooth portions 300 constituting the other end of the rod-shaped member, or interference between the rod-shaped member 400 and the smooth portion 300), and the eighth position adjacent to the rod-shaped member 400 (or the smooth portion 300) This is interference with the node part 200 of the node structure. That is, when the node part 200, the smooth part 300, and the rod-shaped member 400 exist on the same plane in the plane parallel to the XY plane constituting the rotation surface of the first unit and the second unit, each of these components Interference (collision) occurs in the element.

  First, interference between the rod-shaped members 400 (or interference between the sliding member portions 300 or interference between the rod-shaped member 400 and the sliding member portion 300) in adjacent 8-position node structures will be described.

  In the operation | movement of the expansion | deployment structure shown in the above-mentioned FIG.4 and FIG.5, interference of rod-shaped members 400 etc. was not considered. However, in reality, each component of the unfolding structure has a predetermined shape. Therefore, when the unfolding structure performs unfolding operations as shown in FIGS. 4 and 5, the rod-shaped members 400 or the smooth portion 300 are arranged. The rod-shaped member 400 and the smooth part 300 interfere with each other. If the width W of the rod-shaped member is equal to or greater than the maximum length of the sliding portion 300, the interference can be avoided if the interference between the rod-shaped members 400 can be avoided. The interference between the members 400 will be described.

  The case where the bar-shaped members 400 interfere with each other is a case where the bar-shaped members 400 of adjacent 8-position node structures are in the same plane. In this case, the rod-shaped members 400 collide with each other while the unfolded structure is unfolded or folded, and the rod-shaped members 400 cannot cross each other. When the rod-shaped members 400 collide with each other in this way, the rotation of the eighth joint structure is restrained at that time, and the unfolding operation or folding operation of the unfolding structure 1 stops.

  Therefore, in order to maximize the expansion rate of the expanded structure 1, it is necessary to avoid interference between the bar-shaped members 400 of the adjacent 8-position structure. In order to avoid such interference, the structure of the node portion 200 of the 8-position node structure is important. Here, the unfolding rate can be expressed by a ratio of a state where the unfolded structure is smallest (when folded) to a state where it is largest (when unfolded). The expansion rate increases as the interference between the bar-shaped members 400 is avoided, but conversely decreases as the bar-shaped members interfere with each other. That is, the maximum deployment rate can be obtained if all the interference between the rod-shaped members 400 can be avoided.

  FIG. 9 is an exploded perspective view of the bar-shaped member interference avoiding member 500 constituting the node portion of the developed structure according to the embodiment of the present invention. The bar-shaped member interference avoiding member 500 used in the unfolded structure according to the embodiment of the present invention is a specific configuration of the node portion 200 configured to be able to avoid all the interference between the bar-shaped members.

  As shown in FIG. 9, in the developed structure according to the embodiment of the present invention, the node portion of the 8-position node structure is composed of a rod-shaped member interference avoiding member 500. A bar-shaped member interference avoiding member 500 shown in FIG. 9 is configured so that all the bar-shaped members in the first unit and the second unit that constitute the 8-position node structure do not interfere with each other. Further, the bar-shaped member interference avoiding member 500 has one 8-position node structure in which the four bar-shaped members of the first unit are rigidly connected, and the four bar-shaped members of the second unit are also rigidly connected. A configuration in which the first unit and the second unit are slid is also realized.

  As shown in FIG. 9, the bar-shaped member interference avoiding member 500 aligns the centers of the eight rotating parts 510a to 510h for rotating the bar-shaped member and the rotating parts 510a to 510h, thereby rotating the rotating parts 510a to 510h. A pin 520 that forms a rotating shaft, two stud bolts 530 and 531 for allowing the eight rotating parts 510a to 510h to be rigid or smooth as desired, four hex nuts 540, and other rotating parts 510a to 510h. And seven washers inserted between the hexagon nut 540 and the rotating parts 510a and 510h. These components constituting the rod-shaped member interference avoiding member 500 can be made of a metal material such as aluminum. Note that one rod-like member is fixed to each of the rotating components 510a to 510h shown in FIG. That is, the rotating parts 510a to 510h function as connecting parts for fixing the respective bar-shaped members of the 8-position node structure. In this embodiment, the rotating parts 510a to 510h and the respective bar-shaped members are integrally formed. It has become.

  Each of the rotating parts 510a to 510h has a thin disk shape, and a pin through-hole for allowing the pin 520 to pass therethrough is provided at the center thereof. The rotating parts 510a to 510h are each provided with two bolt through holes for allowing the stud bolts 530 and 531 to pass therethrough.

  As shown in FIG. 9, the bar-shaped member interference avoiding member 500 includes eight rotating parts 510a to 510h stacked, penetrating the pin 520 through the pin through hole of each rotating part 510a to 510h, and each rotating part 510a to 510h. The stud bolts 530 and 531 are passed through the bolt through holes, and the stud bolts 530 and 531 are fixed by the hexagon nuts 540. As a result, the four rod-shaped members constituting the first unit are rigidly connected, the four rod-shaped members constituting the second unit are rigidly connected, and the first unit and the second unit are It can be a smoothed configuration. A washer is inserted between the members.

  As described above, the bar-shaped member interference avoiding member 500 is configured by stacking eight rotating parts 510a to 510h, and in order from the bottom, the rotating part 510a, the rotating part 510b, the rotating part 510c, the rotating part 510d, and the rotating part. The component 510e, the rotating component 510f, the rotating component 510g, and the rotating component 510h are stacked. When the position of each of the stacked rotating components 510a to 510h is expressed using eight hierarchical levels of level 1 to level 8, the rotating component 510a is positioned at level 1. Similarly, the rotating component 510b to the rotating component 510h are located at level 2 to level 8, respectively.

  Here, considering the case where a rod-like member is fixed to each of the rotating parts 510a to 510h, the eight rotating parts 510a to 510h are in four types. That is, when considering the rod-shaped member, the rotating component 510a located at level 1 and the rotating component 510h located at level 8 have the same configuration. Similarly, the rotating component 510b located at level 2 and the rotating component 510c located at level 3 have the same configuration. Similarly, the rotating component 510d positioned at level 4 and the rotating component 510e positioned at level 5 have the same configuration, and the rotating component 510f positioned at level 6 and the rotating component 510g positioned at level 7 have the same configuration.

  Hereinafter, a specific configuration of each rotating component to which the rod-like member is fixed will be described with reference to FIGS. Note that the dimensions of the rod-shaped members shown in FIGS. 10 to 13 do not exactly match the dimensions of the rod-shaped members shown in the drawings other than FIGS. 10 to 13.

FIG. 10 is a plan view and a cross-sectional view of the rotating component 510a located at level 1. FIG.
As shown in FIG. 10, the rotating component 510a located at level 1 is provided with a pin through hole 511a for allowing the pin 520 to pass through the center of the circular portion. Further, the rotating component 510a has a bolt through hole 512a for passing through one of the two stud bolts 530 and a bolt through hole 513a for passing the other stud bolt 531 through. Is provided.

  The hole shape of the bolt through hole 512a is the same as the cross-sectional shape of the stud bolt 530 and is circular, and the diameter of the hole is substantially the same as the diameter of the stud bolt 530. Accordingly, since the stud bolt 530 is regulated by the bolt through hole 512a, the rotation angle when the rotating component 510a rotates is interlocked with the rotation angle when the stud bolt 530 rotates around the center of the rotating component 510a. To do.

  Moreover, the hole shape of the bolt through hole 513a is a circle Ca centered on the center of the pin through hole 511a and having a radius from the center to the center of the stud bolt 531 penetrating the bolt through hole 513a. The stud bolt 531 that passes therethrough has a substantially C shape that can move by a semicircular arc of the circle Ca. The C-shaped opening width is substantially equal to the diameter of the circle of the cross section of the stud bolt 531. With this structure, the stud bolt 531 can move freely in the bolt through hole 513a along the circular arc of the circle Ca, and the rotation of the rotating component 510a and the rotation of the stud bolt 531 are not interlocked. Even if the position of 531 does not fluctuate, the rotating component 510a can rotate up to 180 degrees.

  The bolt through hole 512a is provided such that the center of the bolt through hole is located on the circumference of the circle Ca. Further, the bolt through hole 512a and the bolt through hole 513a are bolts when the center of the stud bolt 531 when the stud bolt 531 is located at both ends of the bolt through hole 513a is Oa and O'a, respectively. The positional relationship is such that the distances from the center of the through-hole 512a for use to the centers Oa and O′a are equal.

  In the rotating component 510a located at level 1, one end of the rod-like member is on a straight line passing through the center of the pin through hole 511a and the center of the bolt through hole 512a as shown in FIG. It is fixed to the side of the rotating component 510a on the bolt through hole 512a side with respect to the hole 511a.

  A through hole is provided in the vicinity of the other end (open end) of the rod-shaped member fixed to the rotating component 510a to make a smooth joint with the other end of the rod-shaped member of another unit.

  Next, the rotating component 510b located at level 2 will be described. FIG. 11 is a plan view and a cross-sectional view of the rotating component 510b located at level 2. FIG.

  As shown in FIG. 11, the rotating component 510b located at the level 2 is similar to the rotating component 510a located at the level 1 in that the pin through-hole 511b provided for penetrating the pin 520 in the center thereof, and the stud Bolt through holes 512b and 513b are provided to allow the bolts 530 and 531 to pass therethrough.

  The bolt through hole 512b has a substantially C shape similar to that of the bolt through hole 513a shown in FIG. 10, and the rotating component 510b rotates 180 degrees at the maximum even if the position of the stud bolt 530 does not change. be able to. The bolt through-hole 513b has the same shape as the bolt through-hole 512a shown in FIG. 10, and the rotation angle when the rotating component 510b rotates is centered on the stud bolt 531 about the rotating component 510b. As the rotation angle when rotating as.

  As for the positional relationship between the bolt through hole 512b and the bolt through hole 513b, both through holes are located at the center of the stud bolt 530 when the stud bolt 530 is positioned at both ends of the bolt through hole 512b. When Ob and O′b are used, the distance from the center of the bolt through hole 513b to the center Ob and O′b is equal.

  Further, in the rotating component 510b located at the level 2, as shown in FIG. 11, one end of the rod-like member is on a straight line passing through the center Ob and the center O′b and is centered with respect to the pin through hole 511b. It is fixed to the side of the rotating part 510b on the O′b side.

  A through hole is provided in the vicinity of the other end portion (open end) of the rod-shaped member fixed to the rotating component 510b so as to make a smooth joint with the other end portion of the rod-shaped member of another unit.

Next, the rotating component 510c located at level 3 will be described.
The rotating component 510c located at level 3 has the same structure as the rotating component 510b located at level 2 shown in FIG.

  However, the bolt through-holes through which the stud bolts 530 and 531 pass are different from the rotating component 510b positioned at the level 2, and the rotating component 510c positioned at the level 3 has a stud bolt inserted into the substantially C-shaped bolt through-hole. 531 penetrates and the stud bolt 530 penetrates the other small circular bolt through hole. The method for penetrating the two stud bolts into the respective through holes is the same as the method for penetrating the stud bolts 530 and 531 in the rotating component 510 a located at level 1.

  Next, the rotating component 510d located at level 4 will be described. FIG. 12 is a plan view and a cross-sectional view of the rotating component 510 d located at level 4.

  As shown in FIG. 12, the rotating component 510d located at the level 4 has a pin through hole provided to penetrate the pin 520 at the center thereof, similarly to the rotating components 510a to 510c located at the level 1-3. 511d and bolt through holes 512d and 513d provided to allow the stud bolts 530 and 531 to pass therethrough, respectively.

  The bolt through hole 512d has a substantially C-shape like the bolt through hole 513a shown in FIG. 10, and the rotating component 510d rotates 180 degrees at the maximum even if the position of the stud bolt 530 does not change. be able to. Further, the bolt through hole 513d has the same shape as the small circular bolt through hole 512a shown in FIG. 10, and the rotation angle when the rotating component 510d rotates is that of the stud bolt 531 of the rotating component 510b. Linked with the rotation angle when rotating around the center.

  As for the positional relationship between the bolt through hole 512d and the bolt through hole 513d, both through holes are located at the center of the stud bolt 530 when the stud bolt 530 is positioned at both ends of the bolt through hole 512d. When Od and O′d are used, the distance from the center of the bolt through hole 513d to the center Od and O′d is equal.

  Further, in the rotating component 510d located at the level 4, as shown in FIG. 12, one end of the rod-like member is on a straight line passing through the center of the pin through hole 511d and the center of the bolt through hole 513d, It is fixed to the side portion of the rotating component 510d on the side of the substantially C-shaped bolt through hole 512d with respect to the through hole 511d.

  A through hole is provided in the vicinity of the other end (open end) of the rod-shaped member fixed to the rotating component 510d to make a smooth joint with the other end of the rod-shaped member of another unit.

Next, the rotating component 510e located at level 5 will be described.
The rotating part 510e located at level 5 has the same structure as the rotating part 510d located at level 4 shown in FIG.

  However, the bolt through-holes through which the stud bolts 530 and 531 pass are different from the rotating component 510d positioned at the level 4, and the rotating component 510e positioned at the level 5 has a stud bolt inserted into the substantially C-shaped bolt through-hole. 531 penetrates and the stud bolt 530 penetrates the other small circular bolt through hole. The method of penetrating the two stud bolts into the respective through holes is the same as the method of penetrating the stud bolts 530 and 531 in the rotating parts 510a and 510c located at the levels 1 and 3.

  Next, the rotating component 510f located at level 6 will be described. FIG. 13 is a plan view and a cross-sectional view of the rotating component 510 f located at level 6.

  As shown in FIG. 13, the rotating component 510 f located at the level 6 has a pin through hole 511 f provided for penetrating the pin 520 at the center, similarly to the rotating component 510 a located at the level 1, Bolt through holes 512f and 513f are provided for penetrating the stud bolts 530 and 531, respectively.

  The bolt through hole 512f is substantially C-shaped like the bolt through hole 513a shown in FIG. 10, and the rotating component 510b rotates 180 degrees at the maximum even if the position of the stud bolt 530 does not change. be able to. Further, the bolt through hole 513f has the same shape as the small circular bolt through hole 512a shown in FIG. 10, and the rotation angle when the rotating component 510f rotates is that of the stud bolt 531 of the rotating component 510b. Linked with the rotation angle when rotating around the center.

  As for the positional relationship between the bolt through hole 512f and the bolt through hole 513f, both through holes are located at the center of the stud bolt 530 when the stud bolt 530 is positioned at both ends of the bolt through hole 512f. When the positions are Of and O′f, the distances from the center of the bolt through hole 513f to the center Of and O′f are equal to each other.

  Further, in the rotating component 510f located at the level 6, as shown in FIG. 13, one end of the rod-like member is on a straight line passing through the center Of and the center O′f and is centered with respect to the pin through hole 511f. It is fixed to the side of the rotating part 510f on the Of side.

  In the vicinity of the other end (open end) of the rod-shaped member fixed to the rotating component 510f, a through hole is provided for slidingly coupling with the other end of the rod-shaped member of another unit.

Next, the rotating component 510g located at level 7 will be described.
The rotating part 510g located at level 7 has the same structure as the rotating part 510f located at level 6 shown in FIG.

  However, the bolt through-holes through which the stud bolts 530 and 531 pass are different from the rotating component 510f positioned at the level 6, and the rotating component 510g positioned at the level 7 has a stud bolt inserted into the substantially C-shaped bolt through-hole. 531 penetrates and the stud bolt 530 penetrates the other small circular bolt through hole. The method for penetrating the two stud bolts into the respective through holes is the same as the method for penetrating the stud bolts 530 and 531 in the rotating parts 510a, 510c and 510e located at levels 1, 3, and 5.

Finally, the rotating component 510h located at level 8 will be described.
The rotating component 510h positioned at level 8 has the same structure as the rotating component 510a positioned at level 1 shown in FIG.

  However, the bolt through-holes through which the stud bolts 530 and 531 pass are different from the rotating component 510a positioned at the level 1, and the rotating component 510h positioned at the level 8 has a stud bolt inserted into the substantially C-shaped bolt through-hole. 530 penetrates and the stud bolt 531 penetrates the other small circular bolt through hole. The method of penetrating the two stud bolts into the respective through holes is the same as the method of penetrating the stud bolts 530 and 531 in the rotating parts 510b, 510d and 510f located at levels 2, 4, and 6.

  Returning to FIG. 9 again, the overall configuration of the rod-shaped member interference avoiding member 500 will be described. As shown in FIG. 9, these rotating parts 510a to 510h to which rod-shaped members are fixed are stacked, and the stud bolts 530 and 531 are passed through the two bolt through holes of the rotating parts 510a to 510h by the above-described penetration method. The rod-shaped member interference avoiding member 500 can be manufactured by fixing the stud bolts 530 and 531 with the hexagon nut 540 and disposing a washer between the components.

  As a result, the rotating component 510 a positioned at level 1, the rotating component 510 c positioned at level 3, the rotating component 510 e positioned at level 5, and the rotating component 510 g positioned at level 7 are rigidly connected by the stud bolt 530. It will be connected, and it will be connected to the joint by the stud bolt 531. A unit constituted by the rotating parts 510a, 510c, 510e, and 510g to which the rod-like member is fixed is the first unit of the 8-position node structure.

  Further, the rotating component 510b positioned at the level 2, the rotating component 510d positioned at the level 4, the rotating component 510f positioned at the level 6, and the rotating component 510h positioned at the level 8 are rigidly connected by the stud bolt 531. Therefore, it is connected to the joint by the stud bolt 530. A unit constituted by the rotating parts 510b, 510d, and 510f to which the rod-like member is fixed is the second unit of the 8-position structure.

  And the 1st unit comprised by the rotation components 510a, 510c, 510e, 510g located in the level 1,3,5,7 to which the rod-shaped member was fixed, and the levels 2, 4, 6, to which the rod-shaped member was fixed. By combining with the second unit composed of the rotating parts 510b, 510d, 510f, and 510h located at 8, it is possible to configure the 8-position node structure.

  In the 8-position structure having the above structure, the first unit including the rotating parts located at the levels 1, 3, 5, and 7 and the second unit including the rotating parts located at the levels 2, 4, 6, and 8 are provided. Each unit is configured by rigidly connecting four bar-shaped members, so the relative positional relationship of the four bar-shaped members in each unit does not change even when the rotating component rotates. In addition, since the first unit and the second unit are configured to slide together, the rotating parts of each unit can rotate without being restricted from each other. Thus, since the 8-position node structure according to the present embodiment is provided with the rod-shaped member interference avoidance member 500 described above, the 8 rod-shaped members of the 8-position node structure are different from each other in 8 layers. It is provided so that it may be located in a layer. Thereby, even if the 1st unit and / or the 2nd unit rotate, all rod-shaped members do not interfere with each other. That is, interference between rod-shaped members can be avoided.

  The case where such a rod-shaped member interference avoidance member 500 is applied to the entire development structure 1 will be described with reference to FIG. FIG. 14 (a) is a plan view of a developed structure representing the developed structure 1 according to the present invention as a model, and FIG. 14 (b) is a layer of rod-shaped members in the developed structure 1 according to the present invention. It is the figure which showed the level. The numbers in FIGS. 14A and 14B represent the layer level of the rod-shaped member. That is, “+1” is level 1 (first layer), “+2” is level 2 (second layer), “+3” is level 3 (third layer), “+4” is level 4 (fourth layer), “+5” represents level 5 (5th layer), “+6” represents level 6 (6th layer), “+7” represents level 7 (7th layer), and “+8” represents level 8 (8th layer). ing.

  As shown in FIG. 14 (a), in all the smooth portion 300, the adjacent rod-like members 400 to be smoothed have a structure different in one layer. Thus, since the layers are different in all of the adjacent bar-shaped members 400 in the adjacent 8-position structure, the bar-shaped members 400 interfere with each other when the expanded structure 1 is expanded or folded. There is nothing.

  FIG. 15 is a schematic diagram showing the layer levels of the rod-like members of the first unit and the second unit of the 8-position node structure when the unfolded structure 1 is folded and unfolded. FIG. 15A shows the position of the rod-shaped member of the 8-position node structure when the unfolded structure is folded, and FIG. 15B shows the rod-shape of the 8-position node structure when the unfolded structure is expanded. The position of the member is shown.

  FIG. 16 is a plan view of the rotating component at each level of the 8-position node structure when the unfolded structure corresponding to FIG. 15 is folded and unfolded. FIG. 16A shows the positions of the rotating parts at each level when the unfolded structure is most folded (when folded), and FIG. 16B shows the position when the unfolded structure is unfolded most ( The position of the rotating component at each level during development is shown.

  As described above, as shown in FIGS. 9 to 16, by using the rod-shaped member interference avoiding member 500 for the node portion 200, the 8-position node structure can be made into an eight-layer structure for each rod-shaped member 400. Thereby, when expanding or contracting the expansion structure 1, it is possible to avoid interference between the eight rod-shaped members in all the eight-position node structures constituting the expansion structure 1. Therefore, the unfolding structure 1 can be folded as small as possible and can be unfolded as large as possible.

  Moreover, the structure which comprises the node part 200 is not restricted to what is shown in FIG. 9, What kind of thing may be used as long as the function of the node part 200 can be achieved. That is, the rod-shaped members 400 in each unit of the first unit and the second unit may be rigidly connected, and the first unit and the second unit may be smoothed. Moreover, in order to avoid interference between rod-shaped members, it is realizable by using the rod-shaped member interference avoidance member 500 shown in FIG. 9, but as a member which avoids interference between rod-shaped members, rod-shaped as shown in FIG. The member interference avoiding member 500 is not limited.

  Next, returning to FIG. 6 again, the interference between the rod-like member 400 (or the smooth portion 300) and the adjacent node portion 200 of the eighth-position node structure will be described.

  In consideration of interference between the rod-like member 400 (or the smooth joint portion 300) and the nodal portion 200, the state shown in FIG. 6A becomes the state when the unfolded structure is folded to the smallest size, and FIG. ) Is the state when the unfolded structure is most unfolded. This is because the interference between the rod-shaped member 400 (or the smooth joint portion 300) and the node portion 200 cannot be avoided.

  Therefore, the unfolding structure 1 according to the embodiment of the present invention gradually unfolds from the smallest folded state shown in FIG. 6 (a) to the largest unfolded state shown in FIG. 6 (b). 6 (a) to FIG. 6 (b), the behavior when the unfolded structure 1 is unfolded is the same as the unfolded structure 1 described with reference to FIGS. The description of the rotating operation of the body 1 and the state of unfolding is omitted.

  As described above, also in the expanded structure 1 according to the embodiment of the present invention, all of the X-position nodal structures constituting the expanded structure 1 can be locally rotated to add all of them. Rotational action can be propagated to the X-position node structure. That is, all the X-position nodal structures can be uniformly expanded or contracted by simply adding a rotational action locally to any X-position nodal structure 10. Therefore, the entire deployment structure can be easily expanded or folded without using a plurality of power sources or complicated power sources.

  In the present embodiment, all the constituent elements of all the 8-position node structures constituting the expanded structure 1 are assumed to have the same shape and dimensions. Specifically, all the rod-shaped members 400 have the same shape and dimensions such as length, width, and thickness, and the parts constituting all the node portions 200 and the sliding portion 300 also have the shape and All dimensions are the same.

  Next, the expansion rate of the expanded structure 1 according to the embodiment of the present invention will be described with reference to FIG. FIG. 17 is a partially enlarged view of the unfolded structure 1 when the unfolded structure 1 according to the embodiment of the present invention is most folded.

  In the state where the unfolded structure 1 is most folded, as described above, even if the bar-shaped member interference avoidance member 500 is used, interference between the bar-shaped member 400 and the node portion 200 cannot be avoided. Therefore, as shown in FIG. 17, when the unfolded structure 1 is most folded, the rod-shaped member 400 and the node portion 200 are in contact with each other.

Here, in the expanded structure 1 in which a plurality of 8-position node structures are arranged in a p × p matrix as shown in FIG. 6, the length of the rod-shaped member 400 is L, as shown in FIG. When the diameter of 200 is D, the diameter of the smooth portion 300 and the width of the rod-shaped member 400 are W, the center distance Hmax between the adjacent 8-position node structures when the unfolded structure 1 is maximized is Hmax = It is represented by 2 × (p−1) × L. Further, the center distance Hmin between adjacent 8-position structure when the unfolded structure 1 is most folded (minimum) is Hmin = (p−1) × ((D + W) × L) ^1/2 . Become.

Therefore, in this case, the expansion ratio D of the 8-position structure is expressed by D = Hmax / Hmin, and thus D = 2 (L / (D + W)) ^1/2 .

  For example, when an 8-position node structure is configured with L = 100 mm, D = 26 mm, and W = 10 mm, and this is arranged in a 5 × 5 matrix, the expanded structure 1 is manufactured. Hmax = 800 mm, Hmin = 240 mm, the expansion rate D is D = about 3.33. That is, the unfolded structure 1 in this case is unfolded to a size approximately 3.33 times when unfolded from the folded state to the maximum.

  Since the unfolding structure according to the present invention has a relatively simple unfolding mechanism, a modular unfolding structure can be easily manufactured and applied to various unfolding apparatuses that require the unfolding mechanism. Can do.

  Although the unfolding structure according to the present invention has been specifically described above, the unfolding structure according to the present invention is not limited to the above embodiments and examples. For example, the present invention includes the following cases.

(Modification 1)
In the above embodiment, the first unit 110 and the second unit 120 configured by four rod-shaped members are used and the X-position node structure 10 is configured by eight rod-shaped members, but the present invention is not limited thereto.

  For example, each of the first unit 110 and the second unit 120 may be configured by three rod-shaped members to form a six-position node structure. Alternatively, each of the first unit 110 and the second unit 120 may be composed of a plurality of six or more bar-shaped members, and the X-position node structure may be a 12-position or more node structure. For example, the rod-shaped members of the first unit 110 and the second unit 120 may each be composed of six rod-shaped members to form a 12-position node structure.

(Modification 2)
Further, in the above-described embodiment, the four-position node unit in which the rod-like members are configured in a cross shape is combined to form an eight-position node structure, and this is arranged in a matrix to constitute the expanded structure. Not limited to.

  For example, as shown in FIG. 18, at the time of maximum deployment, a so-called grid structure deployment structure in which a configuration in which two triangles and two hexagons are in contact with one vertex is periodically arranged It can also be 1 ′.

  In addition, various two-dimensional arrangement structures of (X + Y) position structure or (X + Y + Z +...) Position structure can be used. However, in order to obtain a high expansion rate, a periodic structure is desirable.

(Modification 3)
In the above embodiment, the X unit node structure 10 is composed of two units, the first unit 110 and the second unit 120, but the X unit node structure 10 is composed of two or more units. It doesn't matter.

  For example, it can be composed of three units, a first unit, a second unit, and a third unit. In this case as well, the first modification or the second modification described above can be applied.

(Modification 4)
In the above embodiment, when the unfolding structure 1 is unfolded, a rotational action is locally added to one X-position node structure 10, but the present invention is not limited to this.

  For example, in the rectangular unfolded structure 1 shown in FIG. 2, a rotational action may be simultaneously applied to the two X-position node structures 10 positioned at one diagonal end. Further, in this unfolded structure 1, a rotating action can be simultaneously applied to the four X-position nodal structures 10 located at the two diagonal ends.

  In this way, since a large rotational moment can be applied to the unfolded structure by simultaneously applying the rotating action at a plurality of locations, the mass of the unfolded structure or the rod-shaped member of the unfolded structure is large. Even if it is a case, the said expansion | deployment structure can be expand | deployed easily.

(Modification 5)
In the above-described embodiment, when the deployment structure 1 is deployed, the first unit and the second unit are imparted with a reverse rotation action by positively applying an external force. It does not matter if it is added.

  For example, in FIG. 3, by inserting a linear actuator between the connecting members between the rod-shaped member 121A and the rod-shaped member 112B and between the rod-shaped member 114A and the rod-shaped member 123B, and driving the linear actuator up and down, The unfolding structure 1 can also be unfolded or folded.

  Note that in the above-described embodiments and modifications, all allowable external forces are converted into rotational deformation of the internal member.

(Modification 6)
In the above embodiment, the unfolded structure 1 is configured by arranging a plurality of X-position nodal structures 10 on a two-dimensional plane, but the present invention is not limited to this.

  For example, as shown in FIG. 19, the unfolded structure can be configured by arranging the X-position node structure in a substantially curved surface that is a part of a substantially spherical body having a relatively large radius. FIG. 19A is a plan view of an unfolded structure 1 ″ according to Modification 6 of the present invention, and FIG. 19B is a cross-sectional view of the unfolded structure 1 ″ according to Modification 6 of the present invention. is there.

  As shown in FIGS. 19 (a) and 19 (b), the expanded structure 1 ″ according to the modified example 6 of the present invention has the 8-position structure at the maximum expansion arranged three-dimensionally. That is, with reference to the position in the Z-axis direction of the 8-position structure positioned at the center of the expanded structure 1 ″, as shown in FIG. The position in the Z-axis direction gradually increases from the position structure to the eighth position structure located in the periphery.

  Further, when the unfolded structure 1 ″ according to this modification is unfolded at the time of maximum unfolding shown in 19 (a) from the time of folding, each 8-position node structure gradually increases in position in the Z-axis direction as it unfolds. Become.

  As shown in FIG. 19B, the unfolded structure 1 ″ configured as described above is such that all the bar-shaped members at the respective layer levels in one 8-position node structure are horizontal. In the knot structure, the connecting portion between the nodal portion (rotating part) and the rod-shaped member has a slight angle change, that is, the height direction (Z-axis direction) of one end and the other end of the rod-shaped member. The unfolded structure 1 ″ according to the present modification has a three-dimensional unfolding mechanism.

(Modification 7)
About the rotation member of the rod-shaped member interference avoidance member 500 in the expansion | deployment structure which concerns on said Example, it is not restricted to what is shown in FIGS. FIG. 20 is a plan view of a rotating component in the rod-shaped member interference avoiding member of the developed structure according to Modification Example 7 of the present invention.

  As shown in FIG. 20, the rotating component 510i in the rod-shaped member interference avoiding member of the unfolded structure according to Modification 7 of the present invention has the same basic configuration as the rotating component 510a shown in FIG. 20 is different from the rotating component 510a shown in FIG. 10 in that the rotating component 510i shown in FIG. In FIG. 20, the rotating portion 514 is hatched for easy understanding.

  The rotating unit 514 can arbitrarily rotate about the central axis. Further, the rotating component 510i has a lock mechanism (not shown) so that the rotating unit 514 can be fixed at an arbitrary position.

  The rotating component 510 i configured as described above can obtain a rotating component having the same structure as the rotating component shown in FIGS. 10 to 13 by rotating the rotating unit 514. Therefore, it is not necessary to manufacture a rotating component for each layer of the rod-like member interference avoiding member as in the above embodiment.

  20 can be applied to an X-position node structure other than the 8-position structure. For example, in the rotating component 510i shown in FIG. 20, three types of rotating components obtained by rotating the hatched rotating portion 514 by 120 degrees are prepared, and these are combined to obtain bar-shaped member interference in the case of a six-position node structure. An avoidance member can be obtained. As described above, the rotating component 510i shown in FIG. 20 can be applied to an arbitrary X-position node structure having the same member length.

  As mentioned above, although embodiment, an Example, and the modification have been demonstrated regarding the expansion | deployment structure which concerns on this invention, these expansion | deployment structures can be applied to various expansion | deployment apparatuses. Hereinafter, application examples of the development structure according to the present invention will be described.

(Application example 1)
First, Application Example 1 in which the development structure according to the present invention is applied to a solar cell unit will be described with reference to FIGS. 21 and 22. FIG. 21 is a plan view of a development structure used in the solar cell unit according to Application Example 1. FIG. FIG. 22 is a diagram illustrating a state where each cell of the expanded structure according to Application Example 1 is expanded.

  As shown in FIG. 21, in the application example 1, the unfolded structure 1 composed of the 8-position structure according to the above embodiment is used. The expanded structure 1 used in this application example has a 4 × 4 cell structure in which five 8-position node structures are arranged vertically and five horizontally. Further, the expansion rate of the expanded structure 1 was set to 3 times.

  The solar cell unit 600 according to this application example uses a slide type solar cell panel. As shown in FIG. 21, the upper surface of each cell of the unfolded structure 1 when the unfolded structure 1 is folded. In addition, nine slide type solar cell panels (not shown) having the same shape are stacked. That is, in this application example, 144 (16 × 9) solar battery panels are used, and the size of one solar battery panel is substantially the same as each cell of the development structure 1. In addition, about nine solar cell panels in each cell, about each solar cell panel located in the upper left region among nine regions into which each cell is divided into nine when the deployment structure 1 is expanded to the maximum, It arrange | positions in the uppermost stage, and arrange | positions in the lowest stage about the solar cell panel located in the center area | region of 9 area | regions.

  When the external force F in the diagonally outward direction as shown in FIG. 21 is applied to the thus configured solar cell unit 600, the solar cell panels of nine cells are shown in FIGS. 22 (a) to 22 (b). ). As shown in FIGS. 22 (a) to 22 (b), the solar cell panels 601 to 609 of nine cells are slid along the guides 601a to 609a provided in each solar cell panel, and finally As shown in FIG. 22C, when the unfolded structure is fully developed, all the solar cell panels 601 to 609 of nine cells are exposed, and the solar cell unit 600 as a whole is 144. All the solar cell panels are exposed. In addition, the arrow line shown in FIG.22 (c) has shown the order which the solar cell panels 601-609 slide.

  The solar cell unit 600 configured as described above can be used as, for example, a space expansion structure that needs to be unfolded and folded. That is, a solar power generation device can be realized in outer space by mounting this solar cell unit in a state of being folded on an artificial satellite and deploying it in outer space.

  In this application example, the expansion rate of the expanded structure is three times, but the present invention is not limited to this. However, the expansion rate is preferably an integer.

  In this application example, the slide type solar cell panel is used, but the present invention is not limited to this. For example, it may be a foldable solar cell panel that can be unfolded by being pulled in all directions.

(Application example 2)
Next, a folding tent structure 700 to which the unfolding structure according to the present invention is applied will be described with reference to FIG. FIG. 23A is a plan view of a folding tent structure according to Application Example 2, and shows a state during folding. FIG. 23B is a side view of the folding tent structure shown in FIG.

  As shown in FIGS. 23 (a) and 23 (b), a folding tent structure 700 to which the unfolding structure according to the present invention is applied is an unfolding structure composed of the 8-position node structure of the above embodiment. 1 is used. Note that the expanded structure 1 used in this application example has a 4 × 6 cell structure in which five 8-position node structures are arranged vertically and seven horizontally. Further, the expansion rate of the expanded structure 1 was set to 3 times.

  As shown in FIGS. 23 (a) and 23 (b), a folding tent structure 700 according to this application example is composed of the unfolded structure 1 and four diagonal bars 701 as tent posts. The Each of the four diagonal bars 701 has a configuration extending toward the outer side on the diagonal lines of the four corners of the unfolded structure 1 in a state before the folding tent structure 700 is unfolded. The length of each diagonal bar 701 is the same as the length of the diagonal line of the development structure 1. One end of each diagonal bar 701 is connected to the lower part of each 8-position node structure at the four corners of the unfolded structure 1. A base 702 is provided at the other end of each diagonal bar 701, and the other end of the diagonal bar 701 is fixed to the ground via the base 702. The other end of each diagonal bar 701 and the base 702 are connected in a smooth manner.

  Further, a tent cloth support bar 703 slidable in the horizontal direction is provided on the upper part of the unfolding structure 1. The tent cloth support bar 703 is connected to the two 8-position structure by two connecting bars.

  Next, the unfolding operation of the folding tent structure 700 according to this application example will be described with reference to FIG. FIG. 24 is a diagram illustrating a state in which the tent structure according to Application Example 2 is unfolded, and FIG. 24A is a diagram illustrating a state when the tent structure for folding according to Application Example 2 is folded. FIG. 24B is a diagram illustrating a state when the folding tent structure according to Application Example 2 is unfolded.

  As shown in FIG. 24A, in the folded tent structure 700 in the folded state, external forces F1 and F2 as shown in FIG. 24A are applied to the unfolded structure 1 and the diagonal bar 701, respectively. When added, the unfolding structure 1 is horizontally unfolded and four diagonal bars 701 are raised. Both the external force F1 and the external force F2 may be added, or one of them may be added.

  In the folding tent structure 700 according to this application example, the unfolding rate of the unfolded structure 1 is three times, and the length of the diagonal bar 701 is the same as the length of the diagonal line of the unfolded structure 1. As shown in FIG. 24B, the diagonal bar 701 is perpendicular to the ground when the unfolded structure 1 is fully unfolded.

  The details of the unfolding method will be described. At first, after the 8-position node structure in the outer portion of the unfolding structure 1 is pulled from the outside, and the unfolding structure 1 becomes large to some extent, it will sink into the vicinity of the center. The expanded structure 1 can be expanded by rotating a certain 8-position structure.

  The above is the case where the tent structure according to the application example is expanded, but the case where the tent structure is folded can be performed by the reverse procedure.

  It should be noted that in the middle of the unfolding operation of the unfolding structure 1 or when the unfolding operation of the unfolding structure 1 is interrupted, the unfolding structure 1 is prevented from reversely rotating due to the weight of the folding tent structure 700. 1 is preferably provided with a valve for preventing reverse rotation, or a valve for preventing reverse rotation with respect to the slide mechanism of the diagonal bar 701. Regarding the reverse rotation prevention valve, it is preferable to provide at least one diagonal bar 701 at a joint connecting portion with the base 702 in consideration of ease of removal when the folding tent structure 700 is folded.

  In addition, regarding the material of each member of the folding tent structure 700, considering the rigidity of the folding tent structure 700, at least the 8-position structure at the periphery of the unfolded structure 1 is a highly rigid material. Is preferably used. This is because the 8-position node structure around the unfolded structure 1 is partially removed as described in the above embodiment, and the rigidity at this portion is weakened. is there. As a specific material, aluminum is used for the 8-position structure inside the unfolded structure 1, and stainless steel is used for the 8-position structure around the unfolded structure 1. Moreover, since the diagonal bar 701 is also required to have high rigidity, it is preferable to use stainless steel. Note that the rigidity of each member can be increased by increasing the thickness of each member.

  In order to finally form a tent, it is necessary to install a tent cloth on the folding tent structure 700 described above. FIG. 25 is a side view of a tent according to Application Example 2. FIG. As shown in FIG. 25, a tent cloth 704 that can cover the unfolded folding tent structure 700 from the outside is appropriately installed on the folding tent structure 700 via a tent cloth support bar 703, whereby a tent 750 is obtained. It can be.

  When the folding tent structure 700 is housed, as shown in FIG. 26, each diagonal bar 701 is folded in two steps inward, and the tent cloth support bar is folded, thereby folding the tent structure body. 700 can be folded compactly.

(Application example 3)
Next, an antenna structure to which the development structure according to the present invention is applied will be described. The antenna structure 800 according to the present invention can be used as a grid-type parabolic antenna. FIG. 27 is an external perspective view of an antenna structure according to Application Example 3. FIG.

  Normally, since the parabolic antenna is configured in a curved surface shape, in this application example, the antenna structure 800 can be configured by using the expansion structure 1 ″ according to Modification 6 of the three-dimensional expansion mechanism. it can.

  That is, as shown in FIG. 27, the antenna structure 800 according to this application example is configured by using the development structure 1 ″ according to the above-described modification example 6, and the overall shape is circular when viewed in plan. In the antenna structure 800 according to this application example, the member of the development structure 1 ″ on the reflecting surface side is made of gold plating or molybdenum.

  Although the expanded structure 1 ″ in this application example is configured using the 8-position node structure, the 6-position node structure is configured by combining two 3-position nodes units. The expanded structure may be used.

  Further, the unfolding structure 1 ″ according to the above-described modification 6 of the three-dimensional unfolding mechanism can also be applied to various frame structures, particularly a periodic frame structure. In this case, the X position constituting the unfolding structure An unfolded structure that smoothly deforms out of the plane can be realized by giving a slight angle change to the joint node of the knot structure, for example, an unfolded structure having a spherical frame structure as shown in FIG. It can also be set as the body 1 S. In this case, it can be expanded or folded in a spherical state.

(Other application examples)
Moreover, the expansion | deployment structure 1 which concerns on this invention can also be applied to a folding umbrella. For example, when the unfolded structure 1 according to the present invention is in the fully unfolded state, it can be realized by stretching an umbrella cloth made of cloth or the like on the unfolded structure 1.

  Moreover, all the expansion | deployment structures which concern on this invention can also be utilized as an assembly-type toy. For example, by using a rotating member 510i as shown in FIG. 20 so that parts constituting the development structure are molded of a resin such as plastic and a rod-shaped member interference avoidance member can be mass-produced, the development according to the present invention is achieved. The structure can be used as a toy for an infant or the like.

  Thus, in the deployment device to which the deployment structures 1, 1 ′, 1 ″, 1S according to the present invention are applied, any application example can be easily deployed without using a plurality of power sources or complex power sources. Operation can be realized.

  Further, the unfolded structures 1, 1 ′, 1 ″, 1S according to the present invention are not limited to the above-described application examples, and can be applied to various parts or devices that need to be unfolded or folded. .

  The unfolding structure according to the present invention has an unfolding mechanism composed of an X-position node structure composed of a plurality of rod-shaped members, and is useful for various unfolding devices that perform unfolding operations such as solar cell units, tents, and folding umbrellas. It is.

1,1 ′, 1 ″, 1S Expanded structure 10 X-position structure 10A, 10B, 10C, 10D 8-position structure 110, 110A, 110B First unit 111, 112, 113, 114 Rod-like members 111A, 112A , 113A, 114A Bar-shaped members 111B, 112B, 113B, 114B Bar-shaped members 115, 115A Nodes 116A, 116B, 126A, 126B Other end portions 120, 120A, 120B Second units 121, 122, 123, 124 Bar-shaped members 121A, 122A, 123A, 124A Bar-shaped member 121B, 122B, 123B, 124B Bar-shaped member 125, 125A, 125B Node 200 Node portion 300 Smooth portion 400, 400A, 400B Bar-shaped member 401 Beam 402 One end 403, 403A, 403B The other end 404, 4 4A, 404B Through-hole 405 Common pin 405a Pin shaft 405b Bolt 500 Bar-shaped member interference avoiding member 510a, 510b, 510c, 510d, 510e, 510f, 510g, 510h, 510i Rotating part 511a, 511b, 511d, 511f Pin through-hole 512a , 512b, 512d, 512f, 513a, 513b, 513d, 513f Bolt through hole 520 Pin 530, 531 Stud bolt 540 Hex nut 600 Solar cell unit 601, 602, 603, 604, 605, 606, 607, 608, 609 Sun Battery panel 601a, 602a, 603a, 604a, 605a, 606a, 607a, 608a, 609a Guide 700 Folding tent structure 701 Diagonal bar 702 Base 703 Tent Support rod 704 tent cloth 750 tent 800 antenna structure

Claims (9)

A deployment structure configured by combining a plurality of X-position node structures having X rod-shaped members joined by nodes;
The X position structure is
a first unit of m-th node having a node in which one end portions of the m rod-shaped members are rigidly connected;
an n-th node second unit having a node in which one end portions of the n rod-shaped members are rigidly connected,
The first unit and the second unit are slid at the nodes so that the nodes are aligned with each other.
In the adjacent X-position node structure, the other end portion of the rod-shaped member of one X-position node structure and the other end portion of the rod-shaped member of the other X-position node structure are smoothed,
The nodal portion where the first unit and the second unit are slid
Interference between the rod-like members, interference between the slide portions which are portions where the other ends of the rod-like members of the adjacent X-position node structures are connected to each other, and the rod-like member and the slide portion In order to avoid interference, it is constituted by an interference avoiding member ,
In the smooth portion of each of the plurality of X-position joint structures, the adjacent rod-like members connected to the smooth joint have a structure different from one layer,
A plurality of the X-position node structures are developed structures in which the rod-shaped members in the one-layer different structure are arranged in a periodic structure so that the arrangement is the same for each X-position node structure .
(Here, n and m are natural numbers of 3 or more, and X is a natural number of n + m or more.) The smooth portion where the other end portions of the rod-shaped members of the adjacent X-position joint structures are smoothed,
A portion where the other end of the rod-shaped member of the first unit in one X-position node structure and the other end of the rod-shaped member of the second unit in the other X-position node structure are smoothed; ,
A portion where the other end of the rod-shaped member of the second unit in one X-position node structure and the other end of the rod-shaped member of the first unit in the other X-position node structure are smoothed; The expanded structure according to claim 1 . m = n = 4, X = 8,
In adjacent 8-position structure,
The other end portion of the rod-shaped member of the first unit in one of the eight-position node structures and the other end portion of the rod-shaped member of the second unit in the other eight-position node structure are smoothed. ,
The other end of the rod-shaped member of the second unit in the one 8-position node structure and the other end of the rod-shaped member of the first unit in the other 8-position node structure are smoothed. The expansion | deployment structure of Claim 1 or Claim 2 . A deployment structure configured by combining a plurality of X-position node structures having X rod-shaped members joined by nodes;
The X position structure is
a first unit of m-th node having a node in which one end portions of the m rod-shaped members are rigidly connected;
an n-th node second unit having a node in which one end portions of the n rod-shaped members are rigidly connected,
The first unit and the second unit are slid at the nodes so that the nodes are aligned with each other.
In the adjacent X-position node structure, the other end portion of the rod-shaped member of one X-position node structure and the other end portion of the rod-shaped member of the other X-position node structure are smoothed,
The nodal portion where the first unit and the second unit are slid
Interference between the rod-shaped members, interference between the slide portions, which are portions where the other ends of the rod-shaped members of the adjacent X-position node structures are connected to each other, and the rod-shaped member and the slide portion In order to avoid interference, it is constituted by an interference avoiding member,
The interference avoidance member further includes X rotating parts stacked on the X layer,
X pieces of the rod-like members are respectively fixed to the X pieces of rotating parts.
Exhibition open structure.
(Here, n and m are natural numbers of 3 or more, and X is a natural number of n + m or more.) The unfolded structure according to any one of claims 1 to 4 , wherein all the rod-like members of the first unit and the second unit have the same length. The expanded structure according to claim 4 or 5 , wherein the X-position nodal structures are arranged in a matrix of p rows and q columns.
(Here, p and q are natural numbers of 2 or more.) The deployment structure according to any one of claims 1 to 6 , wherein a position in the height direction of the one end portion of the rod-shaped member is different from a position in the height direction of the other end portion of the rod-shaped member. body. The expanded structure according to any one of claims 1 to 7 ,
A solar cell unit comprising: a solar cell panel installed on the unfolded structure. The expanded structure according to any one of claims 1 to 7 ,
A folding tent structure comprising: a tent post that slides on the unfolded structure and supports the unfolded structure.

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