JP6456881B2 - Variable shape solid structure using telescopic arm - Google Patents

Description

  The present invention relates to a shape-variable three-dimensional structure whose shape can be changed according to the expansion / contraction operation of an expansion / contraction arm.

  The same applicant as the present application previously disclosed in Japanese Patent Application Laid-Open No. 2014-159070 that a plurality of cross units obtained by crossing two rigid members in an X shape are connected in a linear shape to perform a stretching operation in a curved shape. A telescopic arm to perform was proposed.

JP 2014-159070 A

  The inventor of the present application has further studied whether or not the telescopic arm can be used more effectively. In the process, it was found that the area of the planar shape and the three-dimensional shape can be changed by using the telescopic arm.

  An object of the present invention is to provide a shape-variable three-dimensional structure whose shape can be changed according to the expansion / contraction operation of the expansion / contraction arm.

  A shape-variable three-dimensional structure according to the present invention includes an upper frame, a lower frame, and a longitudinal connecting member. The vertical direction connecting member connects the upper frame and the lower frame with being spaced apart in parallel.

  The upper frame rotates between a plurality of cross units in which two rigid members crossed in an X-shape are rotatably connected via a central connecting shaft, and ends of the rigid members of adjacent cross units. And an end connecting portion that is movably connected. The end part connecting portion of the upper frame includes an inner end connecting shaft positioned inside the upper frame and an outer end connecting shaft positioned outside the upper frame.

  The lower frame rotates between a plurality of cross units in which two rigid members crossed in an X-shape are rotatably connected via a central connecting shaft, and ends of the rigid members of adjacent cross units. And an end connecting portion that is movably connected. The end portion connecting portion of the lower frame includes an inner end connecting shaft located inside the lower frame and an outer end connecting shaft located outside the lower frame.

  The vertical connecting member is a vertical telescopic arm provided with a cross unit in which two rigid members crossed in an X shape are connected via a central connecting shaft so as to be rotatable.

  The upper end of the vertical telescopic arm is connected to either the two inner end connecting shafts, the two outer end connecting shafts, or the two central connecting shafts of the upper frame located above.

  The lower end of the vertical telescopic arm is connected to either the two inner end connecting shafts, the two outer end connecting shafts, or the two central connecting shafts of the lower frame located below.

  An example of the use of the present invention is an assembled toy. This assembled toy includes a plurality of the shape variable three-dimensional structures.

  According to the present invention having the above configuration, when the area of the upper frame and the lower frame is enlarged, the height of the vertical telescopic arm connecting the upper and lower frames is reduced, and the area of the upper frame and the lower frame is reduced. When the size is reduced, the height of the vertical telescopic arm that connects the upper and lower frames increases, and as a result, the shape of the three-dimensional structure can be changed.

It is a top view of a square frame, and has shown the state of the minimum area. It is a top view of a square frame, and has shown the state of an intermediate area. It is a top view of a square frame, and has shown the state of the maximum area. It is a perspective view of a volume variable solid structure. It is a perspective view of a volume variable solid structure, and has shown the state of intermediate volume. It is a perspective view of a volume variable solid structure, and has shown the state of the maximum volume. It is a perspective view of a shape variable solid structure concerning one embodiment of the present invention. FIG. 8 is a perspective view of the variable shape three-dimensional structure shown in FIG. 7, showing a state in which the area of the frame is maximized and the height of the longitudinal connecting member is minimized. It is a figure showing other examples of a longitudinal direction connection member diagrammatically. It is a perspective view of a volume variable solid structure. It is a top view of an equilateral triangle frame, and has shown the state of the minimum area. It is a top view of an equilateral triangular frame, and has shown the state of the middle area. It is a top view of an equilateral triangle frame, and has shown the state of the maximum area. It is a top view of a volume variable solid structure, and has shown the state of intermediate volume. It is a perspective view of a volume variable solid structure, and has shown the state of intermediate volume. It is a perspective view of a volume variable solid structure, and has shown the state of the maximum volume. It is a top view of a regular hexagon frame, and has shown the state of the minimum area. It is a top view of a regular hexagon frame, and has shown the state of the middle area. It is a top view of a regular hexagon frame, and has shown the state of the maximum area. It is a top view of a star-shaped frame, and has shown the state of an intermediate area. It is a top view of a star-shaped frame, and has shown the state of the maximum area. It is a top view of a square frame, and has shown the state of the minimum area. It is a top view of a square frame, and has shown the state of an intermediate area. It is a top view of a square frame, and has shown the state of the maximum area. It is a top view of an area variable frame, and has shown the state of the minimum area. FIG. 26 is a plan view showing a state in which the variable area frame shown in FIG. 25 has an intermediate area. FIG. 26 is a plan view showing a state in which the area variable frame shown in FIG. 25 has a maximum area. It is a perspective view which shows the other example of a volume variable solid structure, and has shown the state used as the minimum volume. FIG. 29 is a perspective view showing a state in which the volume variable three-dimensional structure shown in FIG. 28 has an intermediate volume. FIG. 29 is a perspective view showing a state in which the volume variable three-dimensional structure shown in FIG. 28 has a maximum volume. It is a figure which shows the minimum length state of the expansion-contraction arm of another form, (a) is a perspective view, (b) is a top view. It is a figure which shows the intermediate | middle length state of the expansion-contraction arm of FIG. 31, (a) is a perspective view, (b) is a top view. It is a figure which shows the maximum length state of the expansion-contraction arm of FIG. 31, (a) is a perspective view, (b) is a top view. It is a perspective view which shows the expansion-contraction arm of another form. It is a top view of the volume variable solid structure of another form. It is a top view which shows the state after changing the shape of embodiment shown in FIG. It is a perspective view which shows the state after changing the shape of embodiment shown in FIG.

  1-3 has shown 1st Embodiment of the area variable frame. The variable area frame has a quadrangle as an example of a polygon. 1 shows a state where the area surrounded by the outline of the frame body is the smallest, FIG. 2 shows a state where the area is an intermediate size, and FIG. 3 shows a state where the area is the largest. Show.

  1 to 3 exemplarily illustrate a square area variable frame, the basic configuration and operation are the same for other polygons such as a triangle, pentagon, and hexagon.

  The configuration of the rectangular frame 10 will be described mainly with reference to FIG.

  As shown in the figure, the four sides of the quadrangular frame are constituted by four extendable arms A, B, C, and D, and the lengths of the sides change according to the extend / contract operation of the extendable arms. A coupling mechanism that couples two adjacent telescopic arms so as to be interlocked so as to interlock the expansion and contraction operations of two adjacent sides is provided. This coupling mechanism will be described later.

  Each telescopic arm A, B, C, D is adjacent to a plurality of cross units 11 in which two rigid members 11a, 11b crossed in an X shape are rotatably connected via a central connecting shaft 12. And an end connecting portion that rotatably connects the end portions of the cross unit.

  In the illustrated embodiment, the end connecting portion includes an inner end connecting shaft 13 positioned inside the quadrangular frame and an outer end connecting shaft 14 positioned outside the quadrangular frame. When attention is paid to the shape of one rigid member that is a constituent element of the cross unit 11, an imaginary line connecting the inner end connecting shaft 13, the center connecting shaft 12, and the outer end connecting shaft 14 in a plan view seen from above is , Extend linearly. The shape of the rigid member may be any shape as long as the imaginary line connecting the three coupling axes in a plan view extends linearly, and a shape curved in an S shape or a shape curved in a Z shape in a plan view, or a thickness direction In this case, the shape may be curved in an arc shape.

  A coupling mechanism that couples two adjacent telescopic arms so as to be interlocked includes a first bent member 15, a second bent member 16, and a corner connecting shaft 17 at a corner portion of a quadrangular frame. Both the first and second bent members 15 and 16 have a shape bent in a V shape. The corner connecting shaft 17 connects the first bent member 15 and the second bent member 16 so as to be rotatable at their intersection (position of the bending point).

  The first bent member 15 rotatably connects the inner end connecting shaft 13 of the extendable arm on one side and the outer end connecting shaft 14 of the extendable arm on the other side. The second bent member 16 connects the outer end connecting shaft 14 of the extending arm on one side adjacent to the inner end connecting shaft 13 of the extending arm on the other side.

  In order to expand or reduce the area in a similar relationship without breaking the polygonal shape, it is necessary to set the bending angles of the first bent member 15 and the second bent member 16 to a predetermined value. . Specifically, when the sum of the inner angles of the n-gon is A degrees, the bending angle of the first and second bending members 15 and 16 needs to be A / n. For example, in the case of a rectangular frame, the bending angle of each bending member is set to 90 degrees. In the case of a regular triangular frame, the bending angle of each bending member is set to 60 degrees. In the case of a regular pentagonal frame, the bending angle of each bending member is set to 108 degrees. In the case of a regular hexagonal frame, the bending angle of each bending member is 120 degrees.

  The relationship between the lengths of the rigid members 11a and 11b, which are constituent elements of the cross units 11, and the bent members 15 and 16 is as follows. In each of the rigid members 11a and 11b, the distance between the central connecting shaft 12 and the inner end connecting shaft 13 and the distance between the central connecting shaft 12 and the outer end connecting shaft 14 are L1 (see FIG. 3). In each bent member 15, 16, the interval between the corner portion connecting shaft 17 and the inner end connecting shaft 13 and the interval between the corner portion connecting shaft 17 and the outer end connecting shaft 14 are L2. The value of L2 / L1 is about 1 to 2.16 for a regular triangular frame, about 1 to 1.5 for a square frame, and 1 to 1.32 for a regular pentagon. In the case of a regular hexagon, it is about 1 to 1.23. The greater the value of L2 / L1 within the above range, the greater the change in the frame area.

  In addition, although the expansion-contraction arm which comprises each edge | side of a polygonal frame is what connected the some cross unit 11 along the expansion / contraction direction in the shape of a line, when comprising a regular polygon frame, The number of cross units 11 constituting each side is the same integer value. Moreover, the length of each rigid member which comprises each cross unit 11 is the same.

  In the state of the minimum area shown in FIG. 1, each cross unit 11 is in a folded state, and the lengths of the telescopic arms A, B, C, and D are the shortest.

  In the state of the intermediate area shown in FIG. 2, each cross unit 11 is open until the two rigid members 11a and 11b are in a substantially perpendicular positional relationship, and the lengths of the telescopic arms A, B, C, and D are intermediate. It is length.

  In the state of the maximum area shown in FIG. 3, each cross unit 11 is in a fully open state, and the inner end connecting shaft 13 and the outer end connecting shaft 14 of the two rigid members 11a and 11b are located close to each other. In this state, the lengths of the extendable arms A, B, C, and D constituting each side of the quadrangular frame 10 are the maximum length.

  The operation of changing the area of the frame, that is, the expansion / contraction operation of the expansion / contraction arm may be performed manually, or may be performed using a driving means such as a motor.

  FIG. 4 shows an example of a volume variable three-dimensional structure. The illustrated volume variable three-dimensional structure 20 includes a longitudinal connecting member that connects and separates two of the rectangular frame bodies 10 illustrated in FIGS. 1 to 3 in a parallel relationship. In the illustrated example, the longitudinal length of the longitudinal connecting member is constant. Specifically, the vertical direction connecting member is constituted by four bars 21 having a constant length. Each bar 21 is positioned at a corner portion of a quadrangular frame and connects the upper and lower corner portion connecting shafts 17.

  According to the volume variable three-dimensional structure according to the embodiment shown in FIG. 4, the volume expands and contracts according to the expansion and contraction of the area of the rectangular frame 10. At that time, the height of the volume variable three-dimensional structure is constant.

  The longitudinal length of the longitudinal connecting member may be variable. 5 to 9 show an embodiment in which the length of the longitudinal connecting member is variable. The embodiment of FIGS. 5 and 6 shows a variable volume three-dimensional structure that increases in height when the area of the variable area frame is expanded and decreases in height when the area of the variable area frame is reduced. . The embodiment shown in FIGS. 7 and 8 shows a volume variable three-dimensional structure in which the height decreases as the area of the area variable frame increases, and increases as the area of the area variable frame decreases. . The embodiment of FIG. 9 shows a longitudinal connecting member that can change the height regardless of the expansion / reduction of the area of the variable area frame.

  The embodiment shown in FIGS. 5 and 6 will be described. The three-dimensional structure 30 according to the illustrated embodiment has a height that changes in conjunction with a change in the area of the area variable frame body 10 positioned above and below. 5 and FIG. 6 are compared, the area of the rectangular frame 10 positioned above and below is larger in the form of FIG. 6 and the height of the longitudinal connecting member 31 is larger than the form of FIG. I can understand that. The longitudinal connecting member 31 is a longitudinal extending / contracting arm in which a cross unit composed of two rigid members intersecting in an X shape is connected in a longitudinal direction. The upper end of the vertical telescopic arm 31 is coupled to the end coupling portion of the telescopic arm of one of the square frames 10 located above. Further, the lower end of the vertical telescopic arm 31 is coupled to the end coupling portion of the telescopic arm of the other quadrangular frame body 10 located below. Specifically, the upper end of the vertical telescopic arm 31 is connected to the inner end connecting shaft 13 and the outer end connecting shaft 14 of the upper quadrilateral frame 10, and the lower end of the vertical telescopic arm 31 is the lower quadrilateral. The frame 10 is connected to the inner end connecting shaft 13 and the outer end connecting shaft 14.

  When the rectangular frame 10 performs the operation of expanding the area, the interval between the inner end connecting shaft 13 and the outer end connecting shaft 14 is reduced. Therefore, the widthwise dimension of the vertical telescopic arm 31 whose upper and lower ends are connected to the inner end connecting shaft 13 and the outer end connecting shaft 14 is reduced, and the length in the vertical direction is increased. On the contrary, when the rectangular frame 10 performs the operation of reducing the area, the interval between the inner end connecting shaft 13 and the outer end connecting shaft 14 is increased. Therefore, the dimension in the width direction of the longitudinal telescopic arm 31 whose upper and lower ends are coupled to the inner end coupling shaft 13 and the outer end coupling shaft 14 is increased, and the longitudinal length is decreased.

  Next, the embodiment shown in FIGS. 7 and 8 will be described. The three-dimensional structure 40 according to the illustrated embodiment has a height that changes in conjunction with a change in the area of the area variable frame 10 positioned above and below. 7 and 8 are compared, the shape of FIG. 8 has a larger area of the rectangular frame body 10 positioned above and below and the height of the longitudinal connecting member 41 is smaller than the shape of FIG. I can understand that. The vertical connecting member 41 is a vertical telescopic arm in which a cross unit composed of two rigid members intersecting in an X shape is connected in a vertical direction. The upper end of the vertical telescopic arm 41 is connected to two of the central connecting shafts 12 of the upper quadrangular frame 10, and the lower end of the vertical telescopic arm 41 is the center connecting shaft 12 of the lower quadrangular frame 10. Two are connected.

  When the rectangular frame 10 performs the operation of expanding the area, the distance between the two central connecting shafts 12 increases. Therefore, the widthwise dimension of the longitudinal telescopic arm 41 whose upper and lower ends are coupled to the two central coupling shafts 12 is increased, and the longitudinal length is decreased. On the contrary, when the rectangular frame 10 performs the operation of reducing the area, the interval between the two central connecting shafts 12 is reduced. Therefore, the widthwise dimension of the vertical telescopic arm 41 whose upper and lower ends are connected to the two central connecting shafts 12 is reduced, and the length in the vertical direction is increased.

  As a modification of the embodiment shown in FIG. 7 and FIG. 8, instead of connecting the upper and lower ends of the longitudinal connecting member 41 to the two central connecting shafts 12, it is connected to the two outer end connecting shafts 14. Or may be connected to the two inner end connecting shafts 13. Even in such a modification, substantially the same operation as that of the embodiment shown in FIGS. 7 and 8 is performed.

  FIG. 9 shows another example of a vertical connecting member that connects the upper and lower variable area frames 10 in a parallel relationship. The illustrated longitudinal connecting member 45 is a bar having a variable length. Specifically, the vertical connecting member 45 includes a pipe 46 extending in the vertical direction and an insertion body 47 extending in the vertical direction and slidably fitted in the pipe 46. If the height of the state (a) in which the insert 47 is inserted deeply into the tube 46 is H1, and the height of the state (b) in which the insert 47 is largely pulled out from the tube 46 is H2, then H2> H1. Become. If the insertion body 47 is fixed at an arbitrary height position using a lock pin or the like, the interval between the upper and lower frame bodies 10 can be set to an arbitrary size.

  FIG. 10 shows another embodiment of the variable volume solid structure. The three-dimensional structure 50 shown in the figure includes a quadrilateral frame body 10 positioned above and below, and four vertical telescopic arms 51 as vertical direction connecting members that connect the upper and lower quadrangular frame bodies 10. The rectangular frame 10 shown in FIG. 10 is different from the rectangular frame 10 shown in FIGS. 1 to 3 in that the rectangular frame 10 in FIG. 10 does not include the first and second bent members. Only. Since other configurations are the same, the same elements are denoted by the same reference numerals and the description thereof is omitted.

  In the quadrangular frame 10 of the embodiment shown in FIG. 10, two adjacent telescopic arms are connected by a common inner end connecting shaft 13 at a corner portion. Furthermore, the outer end connecting shaft 14 of one telescopic arm and the outer end connecting shaft 14 of the other telescopic arm are connected by a vertical telescopic arm 51 in which cross units are connected in the vertical direction.

  It is the vertical telescopic arm 51 that connects the outer end connecting shafts of the two telescopic arms to connect the two adjacent telescopic arms in the rectangular frame 10 so as to be interlocked. Further, the vertical extending / contracting arm 51 performs an expansion / contraction operation according to the expansion / contraction operation of the expansion / contraction arm of the rectangular frame 10. Therefore, in the embodiment shown in FIG. 10, if the upper and lower quadrangular frames 10 perform the area expanding operation, the heights of the four vertically extending arms 51 are increased, and the volume of the three-dimensional structure 50 is also increased. On the contrary, if the upper and lower quadrangular frames 10 perform the area reduction operation, the heights of the four vertically extending arms 51 are reduced, and the volume of the three-dimensional structure 50 is also reduced.

  11 to 13 show an equilateral triangular frame 60 which is another example of a polygonal frame. Each side of the equilateral triangular frame is constituted by an extendable arm in which a plurality of cross units are connected, as in the embodiment shown in FIGS. The same or corresponding elements as those of the previous embodiment are denoted by the same reference numerals and the description thereof is omitted.

  11 shows a state where the area of the equilateral triangle frame 60 is the smallest, FIG. 12 shows a state where the area of the equilateral triangle frame 60 is an intermediate size, and FIG. 13 shows the area of the equilateral triangle frame 60 being the largest. Indicates the state.

  In the embodiment shown in FIGS. 11 to 13, at the corner portion of the equilateral triangular frame 60, the first bending member 15 includes the inner end connecting shaft 13 of the adjacent extension arm and the extension arm of the other side. The outer end connecting shaft 14 is rotatably connected. Moreover, the 2nd bending member 16 has connected the outer side end connection shaft 14 of the expansion arm of the adjacent one side, and the inner side end connection shaft 13 of the expansion arm of the other side. The first and second bent members 15 and 16 are both bent into a V shape. The corner connecting shaft 17 connects the first bent member 15 and the second bent member 16 so as to be rotatable at their intersection (position of the bending point). The bending angle of the first and second bending members 15 and 16 is 60 degrees.

  In the state of the minimum area shown in FIG. 11, the length of the telescopic arm constituting each side is the smallest. In the state of the intermediate area shown in FIG. 12, the length of the telescopic arm constituting each side is a medium length. In the state of the maximum area shown in FIG. 13, the length of the telescopic arm constituting each side is the largest.

  14-16 has shown other embodiment of the volume variable solid structure. 14 and 15 show a three-dimensional structure having an intermediate volume, and FIG. 16 shows a three-dimensional structure having a maximum volume. The illustrated volume variable three-dimensional structure has a triangular prism shape. Specifically, the frame includes a regular triangular frame 60 positioned above and below, and three vertical extending and retracting arms 71 as vertical connecting members that connect the upper and lower regular triangular frames 60. The vertical telescopic arm 71 is formed by connecting cross units in the vertical direction as in the previous embodiment.

  Each side of each equilateral triangular frame 60 is composed of a telescopic arm in which cross units are connected. In the equilateral triangular frame 60, the adjacent telescopic arms are connected by the common inner end connecting shaft 13 at the corner. Further, the outer end connecting shaft 14 of one of the extendable arms and the outer end connecting shaft 14 of the other extendable arm are connected by a vertical extendable arm 71.

  It is a vertical telescopic arm 71 that connects the two extensible arms that are adjacent to each other in the equilateral triangular frame 60 so as to be interlocked with each other. Further, the vertical extending / contracting arm 71 performs an expansion / contraction operation in accordance with the expansion / contraction operation of the expansion / contraction arm of the equilateral triangular frame 60. Therefore, if the upper and lower equilateral triangular frames 10 perform the area expansion operation, the heights of the three vertically extending arms 71 are increased, and the volume of the three-dimensional structure 70 is also increased. On the contrary, if the upper and lower equilateral triangular frames 60 perform the area reduction operation, the height of the three vertical telescopic arms 71 is reduced, and the volume of the three-dimensional structure 70 is also reduced.

  17 to 19 show a regular hexagonal frame 80 as another example of a polygonal frame. 17 shows the state of the minimum area, FIG. 18 shows the state of the intermediate area, and FIG. 19 shows the state of the maximum area.

  The regular hexagonal frame 80 includes six extensible arms 81 constituting each side, and first and second bent members 82 and 83 that couple two adjacent extensible arms 81 adjacent to each other at a corner portion.

  The first bent member 82 rotatably connects the inner end connecting shaft 13 of the extendable arm 81 on one side and the outer end connecting shaft 14 of the extendable arm 81 on the other side. The second bent member 83 connects the outer end connecting shaft 14 of the extendable arm 81 on one side adjacent to the inner end connecting shaft 13 of the extendable arm 81 on the other side. The corner connecting shaft 17 connects the first bent member 82 and the second bent member 83 so as to be rotatable at their intersection (position of the bending point). The bending angle of the first and second bending members 82 and 83 is 120 degrees.

  Although not shown in figure, if the regular hexagonal frame 80 shown to FIGS. 17-19 is arrange | positioned up and down at a parallel space | interval and it will be connected with a longitudinal direction connection member, the three-dimensional structure of a hexagonal prism will be made. be able to.

  20 and 21 show a star frame which is another example of a polygon frame. FIG. 20 shows an intermediate size state, and FIG. 21 shows a maximum size state.

  The star-shaped frame 90 has a shape having six projecting portions, and two types of bent members 92 and 92 ′ that connect twelve extendable arms 91 that constitute each side and adjacent extendable arms to be interlocked. With. One bending member 92 is provided at a corner portion protruding outward, and the bending angle of the bending member 92 is 36 degrees. The other bending member 92 'is provided at a corner portion protruding inward, and the bending angle of the bending member 92' is 108 degrees.

  22-24 has shown the other example of the square frame. 22 shows the state of the minimum area, FIG. 23 shows the state of the intermediate area, and FIG. 24 shows the state of the maximum area.

  The quadrangular frame 100 shown in the figure includes four extensible arms 101 constituting each side of the quadrilateral, and a corner portion connecting means for connecting two adjacent extensible arms 101 at each corner portion of the quadrilateral. Of the four corner portions, in the two opposite corner portions, the corner portion connecting means includes a first bent member 102 and a second bent member 103. About the 1st bending member 102 and the 2nd bending member 103, since it is the same as that of the embodiment described previously, description is abbreviate | omitted.

  In the remaining opposing corners, the inner end of the extension arm 101 on one adjacent side and the inner end of the extension arm 101 on the other side are rotatably connected by an inner end connecting shaft 13 as an inner end connecting member. Has been.

  FIG. 25 to FIG. 27 illustrate an area variable frame body in which three rectangular frames are connected. FIG. 25 shows the minimum area state, FIG. 26 shows the intermediate area state, and FIG. 27 shows the maximum area state.

  The illustrated variable area frame 110 is formed by connecting one rectangular frame 110A and two square frames 110B and 110C. The rectangular frame 110A and one adjacent square frame 110B share one side. Two adjacent square frames 110B and 110C share one side.

  Each of the quadrangular frames 110A, 110B, and 110C includes a first bent member 111 and a second bent member 112 at corners of two adjacent sides that are not shared with other frames. Since the connection mode and operation of these bent members 111 and 112 are the same as those of the above-described embodiment, repeated description will be omitted here.

  A first T-shaped bent member 113 and a second T-shape are formed at a T-shaped corner portion where a side shared by the rectangular frame 110A and the square frame 110B and a side of the rectangular frame 110A and the square frame 110B merge. A shape bending member 114 is provided. The horizontal bar portion of the first T-shaped bent member 113 connects the inner end connecting shaft of the rectangular frame 110A and the outer end connecting shaft of the square frame 110B. The horizontal bar portion of the second T-shaped bent member 114 connects the outer end connecting shaft of the rectangular frame 110A and the inner end connecting shaft of the square frame 110B.

  The vertical bar portion of the first T-shaped bent member 113 is connected to one end connecting shaft of the common side, and the vertical bar portion of the second T-shaped bent member 114 is connected to the other end connecting shaft of the common side. Has been. Specifically, when viewed from the rectangular frame 110A, the vertical bar portion of the first T-shaped bent member 113 is connected to the outer end connecting shaft, and the vertical bar portion of the second T-shaped bent member 114 is connected to the inner end connecting shaft. It is connected to. When viewed from the square frame 110B, the vertical bar portion of the first T-shaped bent member 113 is connected to the inner end connecting shaft, and the vertical bar portion of the second T-shaped bent member 114 is connected to the outer end connecting shaft. .

  Similarly, a first T-shaped bent member 113 and a first T-shaped bent member 114 are also provided at a T-shaped corner where the sides of the adjacent square frames 110B and 110C intersect in a T-shape.

  A first cross-shaped bent member 115 and a second cross-shaped bent member 116 are provided at a cross-shaped corner portion where four sides intersect. Each cross-shaped bent member 115, 116 connects end connecting shafts of two adjacent sides. Specifically, each cross-shaped bent member connects the outer end connecting shaft on one side and the inner end connecting shaft on the other side.

  According to the area variable frame shown in FIGS. 25 to 27, the areas of the three connected rectangular frames can be made variable.

  28 to 30 show a cubic volume variable three-dimensional structure. 28 shows the state of the minimum volume, FIG. 29 shows the state of the intermediate volume, and FIG. 30 shows the state of the maximum volume.

  The illustrated variable volume three-dimensional structure 120 has a cubic shape defined by six surfaces, and includes a quadrangular first surface frame 121, a quadrangular second surface frame 122, and a quadrangular third surface frame. A body 123, a quadrangular fourth face frame 124, a quadrangular fifth face frame 125, and a quadrangular sixth face frame 126. Each side of each face frame body is an extendable arm connected with a plurality of cross units. Two adjacent face frames perform an area-variable operation in conjunction with each other by connecting the outer end connecting shafts of two telescopic arms extending adjacent to each other along each side of the cube. Has been.

  31 to 33 show other forms of telescopic arms. 31 shows the state of the minimum length of the telescopic arm, FIG. 32 shows the state of the intermediate length of the telescopic arm, and FIG. 33 shows the state of the maximum length of the telescopic arm.

  As shown in the figure, the telescopic arm 130 has a configuration in which a plurality of cross units are connected. It should be noted here that a pair of rigid members constituting each cross unit are arc-shaped curved in opposite directions. It has a shape. Therefore, the cross-sectional shape orthogonal to the expansion / contraction direction of the expansion / contraction arm is substantially circular. In the illustrated embodiment, the pair of rigid members are rotatably connected by a central connection shaft 131 that extends linearly.

  FIG. 34 is a modification of the embodiment of FIGS. In the illustrated telescopic arm 140, the central connecting shaft 141 has a shape that is largely curved to the side. In this embodiment, the usable internal space of the extendable arm 140 can be increased, and thus, for example, a fire hose or the like can be disposed in the extendable arm.

  35 to 37 show another embodiment of the volume variable three-dimensional structure. 35 is a plan view in the initial state, FIG. 36 is a plan view in the middle of the operation, and FIG. 37 is a perspective view in the middle of the operation.

  The illustrated volume variable three-dimensional structure 150 is formed by connecting two rectangular frames 150A and 150B separated in the vertical direction by vertical bars 158 that are vertical connection members. As shown in FIG. 35, when attention is paid to the shape in the initial state, the rectangular frame 150A has a rectangular shape formed by the two extended arms 151, 152 in the extended state and the two extended arms 153, 154 in the reduced state. Is formed. The first connecting member 155 and the second connecting member 156 that intersect in an X shape and are rotatably connected via a central connecting shaft 157 operate two adjacent telescopic arms at a rectangular corner portion. It is connected as possible.

  Specifically, one end of the first coupling member 155 is coupled to the common inner end coupling shaft 13 of the second telescopic arm 152 and the third telescopic arm 153, and the other end of the first coupling member 155 is the fourth telescopic arm. The arm 154 and the first telescopic arm 151 are connected to a common inner end connecting shaft 13. One end of the second connection member 156 is connected to the common inner end connection shaft 13 of the first extension arm 151 and the third extension arm 153, and the other end of the second connection member 156 is the second extension arm 152 and the fourth extension arm 156. The telescopic arm 154 is connected to the common inner end connecting shaft 13.

  In the state shown in FIG.36 and FIG.37, each expansion-contraction arm 151,152,153,154 has the substantially same length. As shown in FIG. 37, the vertical bar 158 that connects the upper and lower quadrangular frames 150A and 150B connects the common inner end connecting shaft 13 that is positioned vertically.

  Although several embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and changes can be made to the illustrated embodiment within the same range as the present invention or within an equivalent range.

  Volume variable three-dimensional structures with variable area frames above and below are building structures, containers, exhibits, pavilions, play equipment, assembled toys, ornaments, objects, furniture, car platforms, lighting fixtures, pet houses, etc. , Springboard, robot body, water tank, pool, toilet box, changing box, shower room, ground structure, underground structure, underwater structure, aerial structure, simple apartment (for example, for disaster area), warehouse, It can be advantageously used in many applications such as showers, kitchens, fire hose holding devices, vegetable factories, tents, animal and botanical gardens.

  More specifically, it is as follows.

(1) Building A building provided with a wall, a floor, and a ceiling by combining a polygonal variable area frame or volume variable solid structure and a plate or sheet. As the plate-like material, a wooden board, a metal board, an acrylic board, a glass board, a composite board and the like can be considered. As the sheet-like material, leather, sheets, films and the like can be considered.

  Examples of buildings include simple houses, children's rooms, study rooms, storerooms, warehouses, changing rooms, shower rooms, toilet boxes, pet houses, greenhouses, event venues, stages, gathering venues, workshops, workshops, powder rooms, exhibition halls , Animal and botanical gardens, flower shops, observatory etc.

(2) Arm or pole for holding a shower hose, fire hose or rope, etc. For example, a variable length hose holding frame using a telescopic arm with a circular cross-sectional shape, a national flag, a climbing pole, a pole for climbing a carp, etc. It is done.

(3) Air, underwater, underground structure For example, using a telescopic arm, an area variable frame body, a volume variable solid structure, a large antenna located in the air, a large solar power generation panel, a solar current collector panel, Large structures such as residential facilities installed in space or in seawater can be considered.

(4) Horticultural applications For example, a holding frame that can be adjusted to an optimum size according to the growth of climbing roses, morning glory, vines, and the like is conceivable.

(5) Vegetable factory For example, a medium-sized vegetable factory, a flower factory, a vegetable factory for exchange of elderly people and health maintenance, etc. operated by a group (community) such as a person living in the vicinity can be considered.

(6) Assembled toys For example, it can be used as a cross-link toy necessary for brain growth and activation. The growth of the brains of children and the elderly is possible with an assembling toy that can assemble multiple types of telescopic arms, variable area frames, and variable volume three-dimensional structures with your fingertips as needed, depending on the position of the top, bottom, left, right, front, back, inside and outside. It can also be used for activation.

(7) Large, medium, and small objects For example, objects of various shapes can be made by combining a plurality of types of variable area frames and variable volume three-dimensional structures. Such objects may be installed indoors such as in parks, streets, and event venues, or may be installed indoors such as in homes, hotels, hospitals, child facilities, and elderly facilities. Moreover, it can be made a visually interesting decoration by combining it with color and light.

(8) Indoor vegetable house It can be used as a decorative vegetable house with a green interior in combination with a light emitting diode (LED), a flower stand, or a planter.

(9) Tent It can be used as a tent of various shapes and sizes in combination with a leather sheet or a cloth sheet.

(10) Temporary housing / store, disaster housing complex For example, by combining a rectangular frame and a board, it is possible to combine a plurality of cubes or rectangular parallelepipeds to make a simple house or the like.

(11) Wooden / metal furniture For example, the furniture can be used for beds, sofas, tables, storage shelves / containers, hangers, shelves, pedestals, etc. whose area, volume, shape, color, etc. can be easily changed.

  10 square frame, A, B, C, D telescopic arm, 11 cross unit, 12 center connecting shaft, 13 inner end connecting shaft, 14 outer end connecting shaft, 15 first bent member, 16 second bent member, 17 corner Part connecting shaft, 20 Volume variable solid structure, 21 Bar, 30 Volume variable solid structure, 31 Vertical stretchable arm, 40 Volume variable solid structure, 41 Vertical stretchable arm, 45 Vertical link member, 46 Tube, 47 Interpolated body, 50 Volume variable three-dimensional structure, 51 Longitudinal telescopic arm, 60 Regular triangle frame, 70 Volume variable solid structure, 71 Vertical telescopic arm, 80 Regular hexagonal frame, 81 Telescopic arm, 82 1st Bent member, 83 2nd bent member, 90 star frame, 91 telescopic arm, 92, 92 'bent member, 100 square frame, 101 Telescopic arm, 102 first bent member, 103 second bent member, 110 variable area frame, 111 first bent member, 112 second bent member, 113 first T-shaped bent member, 114 second T-shaped bent member, 115 First cross-shaped bent member, 116 Second cross-shaped bent member, 120 Volume variable three-dimensional structure, 121 First surface frame, 122 Second surface frame, 123 Third surface frame, 124 Fourth surface frame, 125 5th surface frame body, 126 6th surface frame body, 130 telescopic arm, 131 central coupling shaft, 140 telescopic arm, 141 central coupling shaft, 150 volume variable three-dimensional structure, 150A, 150B rectangular frame body, 151 first telescopic frame Arm, 152 second telescopic arm, 153 third telescopic arm, 154 fourth telescopic arm, 155 first Connecting member, 156 the second coupling member 157 central connecting shaft, 158 vertical bar.

Claims (2)

An upper frame,
A lower frame,
A vertical connection member that connects the upper frame and the lower frame in a parallel relationship with each other;
The upper frame is
A plurality of cross units in which two rigid members crossed in an X shape are rotatably connected via a central connecting shaft;
An end connecting portion that rotatably connects the ends of the rigid members of the adjacent cross units;
The end connecting portion of the upper frame includes an inner end connecting shaft located inside the upper frame, and an outer end connecting shaft located outside the upper frame,
The lower frame is
A plurality of cross units in which two rigid members crossed in an X shape are rotatably connected via a central connecting shaft;
An end connecting portion that rotatably connects the ends of the rigid members of the adjacent cross units;
The end link portion of the lower frame includes an inner end link shaft positioned inside the lower frame and an outer end link shaft positioned outside the lower frame,
The longitudinal connecting member is a longitudinal extending / contracting arm provided with a cross unit in which two rigid members crossed in an X shape are rotatably connected via a central connecting shaft,
The upper end of the vertical telescopic arm is connected to either the two inner end connecting shafts, the two outer end connecting shafts, or the two central connecting shafts of the upper frame located above. ,
The lower end of the vertical telescopic arm is connected to either the two inner end connecting shafts, the two outer end connecting shafts, or the two central connecting shafts of the lower frame located below. The shape variable three-dimensional structure. An assembled toy comprising a plurality of the shape-variable three-dimensional structures according to claim 1.

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